Libraries: Move to Userland/Libraries/

69 files changed, 0 insertions, 9063 deletions

diff --git a/Libraries/LibCore/Account.cpp b/Libraries/LibCore/Account.cpp
deleted file mode 100644
index 7e4d40669a..0000000000
--- a/Libraries/LibCore/Account.cpp
+++ /dev/null
@@ -1,316 +0,0 @@
-/*
- * Copyright (c) 2020, Peter Elliott <pelliott@ualberta.ca>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/Base64.h>
-#include <AK/Random.h>
-#include <LibCore/Account.h>
-#include <LibCore/File.h>
-#include <grp.h>
-#include <pwd.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-
-namespace Core {
-
-static String get_salt()
-{
-    char random_data[12];
-    AK::fill_with_random(random_data, sizeof(random_data));
-
-    StringBuilder builder;
-    builder.append("$5$");
-    builder.append(encode_base64(ReadonlyBytes(random_data, sizeof(random_data))));
-
-    return builder.build();
-}
-
-static Vector<gid_t> get_gids(const StringView& username)
-{
-    Vector<gid_t> extra_gids;
-    for (auto* group = getgrent(); group; group = getgrent()) {
-        for (size_t i = 0; group->gr_mem[i]; ++i) {
-            if (username == group->gr_mem[i]) {
-                extra_gids.append(group->gr_gid);
-                break;
-            }
-        }
-    }
-    endgrent();
-    return extra_gids;
-}
-
-Result<Account, String> Account::from_passwd(const passwd& pwd, Core::Account::OpenPasswdFile open_passwd_file, Core::Account::OpenShadowFile open_shadow_file)
-{
-    RefPtr<Core::File> passwd_file;
-    if (open_passwd_file != Core::Account::OpenPasswdFile::No) {
-        auto open_mode = open_passwd_file == Core::Account::OpenPasswdFile::ReadOnly
-            ? Core::File::OpenMode::ReadOnly
-            : Core::File::OpenMode::ReadWrite;
-        auto file_or_error = Core::File::open("/etc/passwd", open_mode);
-        if (file_or_error.is_error())
-            return file_or_error.error();
-        passwd_file = file_or_error.value();
-    }
-
-    RefPtr<Core::File> shadow_file;
-    if (open_shadow_file != Core::Account::OpenShadowFile::No) {
-        auto open_mode = open_shadow_file == Core::Account::OpenShadowFile::ReadOnly
-            ? Core::File::OpenMode::ReadOnly
-            : Core::File::OpenMode::ReadWrite;
-        auto file_or_error = Core::File::open("/etc/shadow", open_mode);
-        if (file_or_error.is_error())
-            return file_or_error.error();
-        shadow_file = file_or_error.value();
-    }
-
-    Account account(pwd, get_gids(pwd.pw_name), move(passwd_file), move(shadow_file));
-    endpwent();
-    return account;
-}
-
-Result<Account, String> Account::from_name(const char* username, Core::Account::OpenPasswdFile open_passwd_file, Core::Account::OpenShadowFile open_shadow_file)
-{
-    struct passwd* pwd = nullptr;
-    errno = 0;
-    pwd = getpwnam(username);
-    if (!pwd) {
-        if (errno == 0)
-            return String("No such user");
-
-        return String(strerror(errno));
-    }
-    return from_passwd(*pwd, open_passwd_file, open_shadow_file);
-}
-
-Result<Account, String> Account::from_uid(uid_t uid, Core::Account::OpenPasswdFile open_passwd_file, Core::Account::OpenShadowFile open_shadow_file)
-{
-    struct passwd* pwd = nullptr;
-    errno = 0;
-    pwd = getpwuid(uid);
-    if (!pwd) {
-        if (errno == 0)
-            return String("No such user");
-
-        return String(strerror(errno));
-    }
-    return from_passwd(*pwd, open_passwd_file, open_shadow_file);
-}
-
-bool Account::authenticate(const char* password) const
-{
-    // An empty passwd field indicates that no password is required to log in.
-    if (m_password_hash.is_empty())
-        return true;
-
-    // FIXME: Use crypt_r if it can be built in lagom.
-    char* hash = crypt(password, m_password_hash.characters());
-    return hash != nullptr && strcmp(hash, m_password_hash.characters()) == 0;
-}
-
-bool Account::login() const
-{
-    if (setgroups(m_extra_gids.size(), m_extra_gids.data()) < 0)
-        return false;
-
-    if (setgid(m_gid) < 0)
-        return false;
-
-    if (setuid(m_uid) < 0)
-        return false;
-
-    return true;
-}
-
-void Account::set_password(const char* password)
-{
-    m_password_hash = crypt(password, get_salt().characters());
-}
-
-void Account::set_password_enabled(bool enabled)
-{
-    if (enabled && m_password_hash != "" && m_password_hash[0] == '!') {
-        m_password_hash = m_password_hash.substring(1, m_password_hash.length() - 1);
-    } else if (!enabled && (m_password_hash == "" || m_password_hash[0] != '!')) {
-        StringBuilder builder;
-        builder.append('!');
-        builder.append(m_password_hash);
-        m_password_hash = builder.build();
-    }
-}
-
-void Account::delete_password()
-{
-    m_password_hash = "";
-}
-
-Account::Account(const passwd& pwd, Vector<gid_t> extra_gids, RefPtr<Core::File> passwd_file, RefPtr<Core::File> shadow_file)
-    : m_passwd_file(move(passwd_file))
-    , m_shadow_file(move(shadow_file))
-    , m_username(pwd.pw_name)
-    , m_uid(pwd.pw_uid)
-    , m_gid(pwd.pw_gid)
-    , m_gecos(pwd.pw_gecos)
-    , m_home_directory(pwd.pw_dir)
-    , m_shell(pwd.pw_shell)
-    , m_extra_gids(extra_gids)
-{
-    if (m_shadow_file) {
-        load_shadow_file();
-    }
-}
-
-String Account::generate_passwd_file() const
-{
-    StringBuilder builder;
-
-    setpwent();
-
-    struct passwd* p;
-    errno = 0;
-    while ((p = getpwent())) {
-        if (p->pw_uid == m_uid) {
-            builder.appendff("{}:!:{}:{}:{}:{}:{}\n",
-                m_username,
-                m_uid, m_gid,
-                m_gecos,
-                m_home_directory,
-                m_shell);
-
-        } else {
-            builder.appendff("{}:!:{}:{}:{}:{}:{}\n",
-                p->pw_name, p->pw_uid,
-                p->pw_gid, p->pw_gecos, p->pw_dir,
-                p->pw_shell);
-        }
-    }
-    endpwent();
-
-    if (errno) {
-        dbgln("errno was non-zero after generating new passwd file.");
-        return {};
-    }
-
-    return builder.to_string();
-}
-
-void Account::load_shadow_file()
-{
-    ASSERT(m_shadow_file);
-    ASSERT(m_shadow_file->is_open());
-
-    if (!m_shadow_file->seek(0)) {
-        ASSERT_NOT_REACHED();
-    }
-
-    Vector<ShadowEntry> entries;
-
-    for (;;) {
-        auto line = m_shadow_file->read_line();
-        if (line.is_null())
-            break;
-        auto parts = line.split(':');
-        if (parts.size() != 2) {
-            dbgln("Malformed shadow entry, ignoring.");
-            continue;
-        }
-        const auto& username = parts[0];
-        const auto& password_hash = parts[1];
-        entries.append({ username, password_hash });
-
-        if (username == m_username) {
-            m_password_hash = password_hash;
-        }
-    }
-
-    m_shadow_entries = move(entries);
-}
-
-String Account::generate_shadow_file() const
-{
-    StringBuilder builder;
-    bool updated_entry_in_place = false;
-    for (auto& entry : m_shadow_entries) {
-        if (entry.username == m_username) {
-            updated_entry_in_place = true;
-            builder.appendff("{}:{}\n", m_username, m_password_hash);
-        } else {
-            builder.appendff("{}:{}\n", entry.username, entry.password_hash);
-        }
-    }
-    if (!updated_entry_in_place)
-        builder.appendff("{}:{}\n", m_username, m_password_hash);
-    return builder.to_string();
-}
-
-bool Account::sync()
-{
-    ASSERT(m_passwd_file);
-    ASSERT(m_passwd_file->mode() == Core::File::OpenMode::ReadWrite);
-    ASSERT(m_shadow_file);
-    ASSERT(m_shadow_file->mode() == Core::File::OpenMode::ReadWrite);
-
-    // FIXME: Maybe reorganize this to create temporary files and finish it completely before renaming them to /etc/{passwd,shadow}
-    //        If truncation succeeds but write fails, we'll have an empty file :(
-
-    auto new_passwd_file = generate_passwd_file();
-    auto new_shadow_file = generate_shadow_file();
-
-    if (new_passwd_file.is_null() || new_shadow_file.is_null()) {
-        ASSERT_NOT_REACHED();
-    }
-
-    if (!m_passwd_file->seek(0) || !m_shadow_file->seek(0)) {
-        ASSERT_NOT_REACHED();
-    }
-
-    if (!m_passwd_file->truncate(0)) {
-        dbgln("Truncating passwd file failed.");
-        return false;
-    }
-
-    if (!m_passwd_file->write(new_passwd_file)) {
-        // FIXME: Improve Core::File::write() error reporting.
-        dbgln("Writing to passwd file failed.");
-        return false;
-    }
-
-    if (!m_shadow_file->truncate(0)) {
-        dbgln("Truncating shadow file failed.");
-        return false;
-    }
-
-    if (!m_shadow_file->write(new_shadow_file)) {
-        // FIXME: Improve Core::File::write() error reporting.
-        dbgln("Writing to shadow file failed.");
-        return false;
-    }
-
-    return true;
-    // FIXME: Sync extra groups.
-}
-
-}
diff --git a/Libraries/LibCore/Account.h b/Libraries/LibCore/Account.h
deleted file mode 100644
index fdd7d9bea9..0000000000
--- a/Libraries/LibCore/Account.h
+++ /dev/null
@@ -1,109 +0,0 @@
-/*
- * Copyright (c) 2020, Peter Elliott <pelliott@ualberta.ca>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Result.h>
-#include <AK/String.h>
-#include <AK/Types.h>
-#include <AK/Vector.h>
-#include <LibCore/File.h>
-#include <pwd.h>
-#include <sys/types.h>
-
-namespace Core {
-
-class Account {
-public:
-    enum class OpenPasswdFile {
-        No,
-        ReadOnly,
-        ReadWrite,
-    };
-
-    enum class OpenShadowFile {
-        No,
-        ReadOnly,
-        ReadWrite,
-    };
-
-    static Result<Account, String> from_name(const char* username, OpenPasswdFile = OpenPasswdFile::No, OpenShadowFile = OpenShadowFile::No);
-    static Result<Account, String> from_uid(uid_t uid, OpenPasswdFile = OpenPasswdFile::No, OpenShadowFile = OpenShadowFile::No);
-
-    bool authenticate(const char* password) const;
-    bool login() const;
-
-    String username() const { return m_username; }
-    String password_hash() const { return m_password_hash; }
-
-    // Setters only affect in-memory copy of password.
-    // You must call sync to apply changes.
-    void set_password(const char* password);
-    void set_password_enabled(bool enabled);
-    void delete_password();
-    bool has_password() const { return !m_password_hash.is_empty(); }
-
-    uid_t uid() const { return m_uid; }
-    gid_t gid() const { return m_gid; }
-    const String& gecos() const { return m_gecos; }
-    const String& home_directory() const { return m_home_directory; }
-    const String& shell() const { return m_shell; }
-    const Vector<gid_t>& extra_gids() const { return m_extra_gids; }
-
-    bool sync();
-
-private:
-    static Result<Account, String> from_passwd(const passwd&, OpenPasswdFile, OpenShadowFile);
-
-    Account(const passwd& pwd, Vector<gid_t> extra_gids, RefPtr<Core::File> passwd_file, RefPtr<Core::File> shadow_file);
-    void load_shadow_file();
-
-    String generate_passwd_file() const;
-    String generate_shadow_file() const;
-
-    RefPtr<Core::File> m_passwd_file;
-    RefPtr<Core::File> m_shadow_file;
-
-    String m_username;
-
-    // Contents of passwd field in passwd entry.
-    // Can be empty, "x", or contain a leading '!'
-    String m_password_hash;
-    uid_t m_uid { 0 };
-    gid_t m_gid { 0 };
-    String m_gecos;
-    String m_home_directory;
-    String m_shell;
-    Vector<gid_t> m_extra_gids;
-
-    struct ShadowEntry {
-        String username;
-        String password_hash;
-    };
-    Vector<ShadowEntry> m_shadow_entries;
-};
-
-}
diff --git a/Libraries/LibCore/ArgsParser.cpp b/Libraries/LibCore/ArgsParser.cpp
deleted file mode 100644
index 121272e38b..0000000000
--- a/Libraries/LibCore/ArgsParser.cpp
+++ /dev/null
@@ -1,392 +0,0 @@
-/*
- * Copyright (c) 2020, Sergey Bugaev <bugaevc@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/Format.h>
-#include <AK/StringBuilder.h>
-#include <LibCore/ArgsParser.h>
-#include <getopt.h>
-#include <limits.h>
-#include <stdio.h>
-#include <string.h>
-
-static constexpr bool isnan(double __x) { return __builtin_isnan(__x); }
-
-static Optional<double> convert_to_double(const char* s)
-{
-    char* p;
-    double v = strtod(s, &p);
-    if (isnan(v) || p == s)
-        return {};
-    return v;
-}
-
-namespace Core {
-
-ArgsParser::ArgsParser()
-{
-    add_option(m_show_help, "Display this message", "help", 0);
-}
-
-bool ArgsParser::parse(int argc, char** argv, bool exit_on_failure)
-{
-    auto print_usage_and_exit = [this, argv, exit_on_failure] {
-        print_usage(stderr, argv[0]);
-        if (exit_on_failure)
-            exit(1);
-    };
-
-    Vector<option> long_options;
-    StringBuilder short_options_builder;
-
-    int index_of_found_long_option = -1;
-
-    // Tell getopt() to reset its internal state, and start scanning from optind = 1.
-    // We could also set optreset = 1, but the host platform may not support that.
-    optind = 0;
-
-    for (size_t i = 0; i < m_options.size(); i++) {
-        auto& opt = m_options[i];
-        if (opt.long_name) {
-            option long_opt {
-                opt.long_name,
-                opt.requires_argument ? required_argument : no_argument,
-                &index_of_found_long_option,
-                static_cast<int>(i)
-            };
-            long_options.append(long_opt);
-        }
-        if (opt.short_name) {
-            short_options_builder.append(opt.short_name);
-            if (opt.requires_argument)
-                short_options_builder.append(':');
-        }
-    }
-    long_options.append({ 0, 0, 0, 0 });
-
-    String short_options = short_options_builder.build();
-
-    while (true) {
-        int c = getopt_long(argc, argv, short_options.characters(), long_options.data(), nullptr);
-        if (c == -1) {
-            // We have reached the end.
-            break;
-        } else if (c == '?') {
-            // There was an error, and getopt() has already
-            // printed its error message.
-            print_usage_and_exit();
-            return false;
-        }
-
-        // Let's see what option we just found.
-        Option* found_option = nullptr;
-        if (c == 0) {
-            // It was a long option.
-            ASSERT(index_of_found_long_option >= 0);
-            found_option = &m_options[index_of_found_long_option];
-            index_of_found_long_option = -1;
-        } else {
-            // It was a short option, look it up.
-            auto it = m_options.find_if([c](auto& opt) { return c == opt.short_name; });
-            ASSERT(!it.is_end());
-            found_option = &*it;
-        }
-        ASSERT(found_option);
-
-        const char* arg = found_option->requires_argument ? optarg : nullptr;
-        if (!found_option->accept_value(arg)) {
-            warnln("\033[31mInvalid value for option \033[1m{}\033[22m, dude\033[0m", found_option->name_for_display());
-            print_usage_and_exit();
-            return false;
-        }
-    }
-
-    // We're done processing options, now let's parse positional arguments.
-
-    int values_left = argc - optind;
-    int num_values_for_arg[m_positional_args.size()];
-    int total_values_required = 0;
-    for (size_t i = 0; i < m_positional_args.size(); i++) {
-        auto& arg = m_positional_args[i];
-        num_values_for_arg[i] = arg.min_values;
-        total_values_required += arg.min_values;
-    }
-
-    if (total_values_required > values_left) {
-        print_usage_and_exit();
-        return false;
-    }
-    int extra_values_to_distribute = values_left - total_values_required;
-
-    for (size_t i = 0; i < m_positional_args.size(); i++) {
-        auto& arg = m_positional_args[i];
-        int extra_values_to_this_arg = min(arg.max_values - arg.min_values, extra_values_to_distribute);
-        num_values_for_arg[i] += extra_values_to_this_arg;
-        extra_values_to_distribute -= extra_values_to_this_arg;
-        if (extra_values_to_distribute == 0)
-            break;
-    }
-
-    if (extra_values_to_distribute > 0) {
-        // We still have too many values :(
-        print_usage_and_exit();
-        return false;
-    }
-
-    for (size_t i = 0; i < m_positional_args.size(); i++) {
-        auto& arg = m_positional_args[i];
-        for (int j = 0; j < num_values_for_arg[i]; j++) {
-            const char* value = argv[optind++];
-            if (!arg.accept_value(value)) {
-                warnln("Invalid value for argument {}", arg.name);
-                print_usage_and_exit();
-                return false;
-            }
-        }
-    }
-
-    // We're done parsing! :)
-    // Now let's show help if requested.
-    if (m_show_help) {
-        print_usage(stdout, argv[0]);
-        if (exit_on_failure)
-            exit(0);
-        return false;
-    }
-
-    return true;
-}
-
-void ArgsParser::print_usage(FILE* file, const char* argv0)
-{
-    out(file, "Usage:\n\t\033[1m{}\033[0m", argv0);
-
-    for (auto& opt : m_options) {
-        if (opt.long_name && !strcmp(opt.long_name, "help"))
-            continue;
-        if (opt.requires_argument)
-            out(file, " [{} {}]", opt.name_for_display(), opt.value_name);
-        else
-            out(file, " [{}]", opt.name_for_display());
-    }
-    for (auto& arg : m_positional_args) {
-        bool required = arg.min_values > 0;
-        bool repeated = arg.max_values > 1;
-
-        if (required && repeated)
-            out(file, " <{}...>", arg.name);
-        else if (required && !repeated)
-            out(file, " <{}>", arg.name);
-        else if (!required && repeated)
-            out(file, " [{}...]", arg.name);
-        else if (!required && !repeated)
-            out(file, " [{}]", arg.name);
-    }
-    outln(file);
-
-    if (m_general_help != nullptr && m_general_help[0] != '\0') {
-        outln(file, "\nDescription:");
-        outln(file, m_general_help);
-    }
-
-    if (!m_options.is_empty())
-        outln(file, "\nOptions:");
-    for (auto& opt : m_options) {
-        auto print_argument = [&]() {
-            if (opt.value_name) {
-                if (opt.requires_argument)
-                    out(file, " {}", opt.value_name);
-                else
-                    out(file, " [{}]", opt.value_name);
-            }
-        };
-        out(file, "\t");
-        if (opt.short_name) {
-            out(file, "\033[1m-{}\033[0m", opt.short_name);
-            print_argument();
-        }
-        if (opt.short_name && opt.long_name)
-            out(file, ", ");
-        if (opt.long_name) {
-            out(file, "\033[1m--{}\033[0m", opt.long_name);
-            print_argument();
-        }
-
-        if (opt.help_string)
-            out(file, "\t{}", opt.help_string);
-        outln(file);
-    }
-
-    if (!m_positional_args.is_empty())
-        outln(file, "\nArguments:");
-
-    for (auto& arg : m_positional_args) {
-        out(file, "\t\033[1m{}\033[0m", arg.name);
-        if (arg.help_string)
-            out(file, "\t{}", arg.help_string);
-        outln(file);
-    }
-}
-
-void ArgsParser::add_option(Option&& option)
-{
-    m_options.append(move(option));
-}
-
-void ArgsParser::add_option(bool& value, const char* help_string, const char* long_name, char short_name)
-{
-    Option option {
-        false,
-        help_string,
-        long_name,
-        short_name,
-        nullptr,
-        [&value](const char* s) {
-            ASSERT(s == nullptr);
-            value = true;
-            return true;
-        }
-    };
-    add_option(move(option));
-}
-
-void ArgsParser::add_option(const char*& value, const char* help_string, const char* long_name, char short_name, const char* value_name)
-{
-    Option option {
-        true,
-        help_string,
-        long_name,
-        short_name,
-        value_name,
-        [&value](const char* s) {
-            value = s;
-            return true;
-        }
-    };
-    add_option(move(option));
-}
-
-void ArgsParser::add_option(int& value, const char* help_string, const char* long_name, char short_name, const char* value_name)
-{
-    Option option {
-        true,
-        help_string,
-        long_name,
-        short_name,
-        value_name,
-        [&value](const char* s) {
-            auto opt = StringView(s).to_int();
-            value = opt.value_or(0);
-            return opt.has_value();
-        }
-    };
-    add_option(move(option));
-}
-
-void ArgsParser::add_option(double& value, const char* help_string, const char* long_name, char short_name, const char* value_name)
-{
-    Option option {
-        true,
-        help_string,
-        long_name,
-        short_name,
-        value_name,
-        [&value](const char* s) {
-            auto opt = convert_to_double(s);
-            value = opt.value_or(0.0);
-            return opt.has_value();
-        }
-    };
-    add_option(move(option));
-}
-
-void ArgsParser::add_positional_argument(Arg&& arg)
-{
-    m_positional_args.append(move(arg));
-}
-
-void ArgsParser::add_positional_argument(const char*& value, const char* help_string, const char* name, Required required)
-{
-    Arg arg {
-        help_string,
-        name,
-        required == Required::Yes ? 1 : 0,
-        1,
-        [&value](const char* s) {
-            value = s;
-            return true;
-        }
-    };
-    add_positional_argument(move(arg));
-}
-
-void ArgsParser::add_positional_argument(int& value, const char* help_string, const char* name, Required required)
-{
-    Arg arg {
-        help_string,
-        name,
-        required == Required::Yes ? 1 : 0,
-        1,
-        [&value](const char* s) {
-            auto opt = StringView(s).to_int();
-            value = opt.value_or(0);
-            return opt.has_value();
-        }
-    };
-    add_positional_argument(move(arg));
-}
-
-void ArgsParser::add_positional_argument(double& value, const char* help_string, const char* name, Required required)
-{
-    Arg arg {
-        help_string,
-        name,
-        required == Required::Yes ? 1 : 0,
-        1,
-        [&value](const char* s) {
-            auto opt = convert_to_double(s);
-            value = opt.value_or(0.0);
-            return opt.has_value();
-        }
-    };
-    add_positional_argument(move(arg));
-}
-
-void ArgsParser::add_positional_argument(Vector<const char*>& values, const char* help_string, const char* name, Required required)
-{
-    Arg arg {
-        help_string,
-        name,
-        required == Required::Yes ? 1 : 0,
-        INT_MAX,
-        [&values](const char* s) {
-            values.append(s);
-            return true;
-        }
-    };
-    add_positional_argument(move(arg));
-}
-
-}
diff --git a/Libraries/LibCore/ArgsParser.h b/Libraries/LibCore/ArgsParser.h
deleted file mode 100644
index 2f7b923a9d..0000000000
--- a/Libraries/LibCore/ArgsParser.h
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * Copyright (c) 2020, Sergey Bugaev <bugaevc@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Function.h>
-#include <AK/String.h>
-#include <AK/Vector.h>
-#include <stdio.h>
-
-namespace Core {
-
-class ArgsParser {
-public:
-    ArgsParser();
-
-    enum class Required {
-        Yes,
-        No
-    };
-
-    struct Option {
-        bool requires_argument { true };
-        const char* help_string { nullptr };
-        const char* long_name { nullptr };
-        char short_name { 0 };
-        const char* value_name { nullptr };
-        Function<bool(const char*)> accept_value;
-
-        String name_for_display() const
-        {
-            if (long_name)
-                return String::format("--%s", long_name);
-            return String::format("-%c", short_name);
-        }
-    };
-
-    struct Arg {
-        const char* help_string { nullptr };
-        const char* name { nullptr };
-        int min_values { 0 };
-        int max_values { 1 };
-        Function<bool(const char*)> accept_value;
-    };
-
-    bool parse(int argc, char** argv, bool exit_on_failure = true);
-    // *Without* trailing newline!
-    void set_general_help(const char* help_string) { m_general_help = help_string; };
-    void print_usage(FILE*, const char* argv0);
-
-    void add_option(Option&&);
-    void add_option(bool& value, const char* help_string, const char* long_name, char short_name);
-    void add_option(const char*& value, const char* help_string, const char* long_name, char short_name, const char* value_name);
-    void add_option(int& value, const char* help_string, const char* long_name, char short_name, const char* value_name);
-    void add_option(double& value, const char* help_string, const char* long_name, char short_name, const char* value_name);
-
-    void add_positional_argument(Arg&&);
-    void add_positional_argument(const char*& value, const char* help_string, const char* name, Required required = Required::Yes);
-    void add_positional_argument(int& value, const char* help_string, const char* name, Required required = Required::Yes);
-    void add_positional_argument(double& value, const char* help_string, const char* name, Required required = Required::Yes);
-    void add_positional_argument(Vector<const char*>& value, const char* help_string, const char* name, Required required = Required::Yes);
-
-private:
-    Vector<Option> m_options;
-    Vector<Arg> m_positional_args;
-
-    bool m_show_help { false };
-    const char* m_general_help { nullptr };
-};
-
-}
diff --git a/Libraries/LibCore/CMakeLists.txt b/Libraries/LibCore/CMakeLists.txt
deleted file mode 100644
index de16c64990..0000000000
--- a/Libraries/LibCore/CMakeLists.txt
+++ /dev/null
@@ -1,37 +0,0 @@
-set(SOURCES
-    Account.cpp
-    ArgsParser.cpp
-    ConfigFile.cpp
-    Command.cpp
-    DateTime.cpp
-    DirectoryWatcher.cpp
-    DirIterator.cpp
-    ElapsedTimer.cpp
-    Event.cpp
-    EventLoop.cpp
-    File.cpp
-    GetPassword.cpp
-    Gzip.cpp
-    IODevice.cpp
-    LocalServer.cpp
-    LocalSocket.cpp
-    MimeData.cpp
-    NetworkJob.cpp
-    NetworkResponse.cpp
-    Notifier.cpp
-    Object.cpp
-    ProcessStatisticsReader.cpp
-    Property.cpp
-    puff.cpp
-    SocketAddress.cpp
-    Socket.cpp
-    StandardPaths.cpp
-    TCPServer.cpp
-    TCPSocket.cpp
-    Timer.cpp
-    UDPServer.cpp
-    UDPSocket.cpp
-)
-
-serenity_lib(LibCore core)
-target_link_libraries(LibCore LibC LibCrypt)
diff --git a/Libraries/LibCore/Command.cpp b/Libraries/LibCore/Command.cpp
deleted file mode 100644
index e4fb717473..0000000000
--- a/Libraries/LibCore/Command.cpp
+++ /dev/null
@@ -1,127 +0,0 @@
-/*
- * Copyright (c) 2020, Itamar S. <itamar8910@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "Command.h"
-#include <AK/ByteBuffer.h>
-#include <AK/LogStream.h>
-#include <AK/ScopeGuard.h>
-#include <LibCore/File.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/wait.h>
-#include <unistd.h>
-
-// #define DBG_FAILED_COMMANDS
-
-namespace Core {
-
-// Only supported in serenity mode because we use `posix_spawn_file_actions_addchdir`
-#ifdef __serenity__
-
-String command(const String& command_string, Optional<LexicalPath> chdir)
-{
-    auto parts = command_string.split(' ');
-    if (parts.is_empty())
-        return {};
-    auto program = parts[0];
-    parts.remove(0);
-    return command(program, parts, chdir);
-}
-
-String command(const String& program, const Vector<String>& arguments, Optional<LexicalPath> chdir)
-{
-    int stdout_pipe[2] = {};
-    int stderr_pipe[2] = {};
-    if (pipe2(stdout_pipe, O_CLOEXEC)) {
-        perror("pipe2");
-        ASSERT_NOT_REACHED();
-    }
-    if (pipe2(stderr_pipe, O_CLOEXEC)) {
-        perror("pipe2");
-        ASSERT_NOT_REACHED();
-    }
-
-    auto close_pipes = ScopeGuard([stderr_pipe, stdout_pipe] {
-        // The write-ends of these pipes are closed manually
-        close(stdout_pipe[0]);
-        close(stderr_pipe[0]);
-    });
-
-    Vector<const char*> parts = { program.characters() };
-    for (const auto& part : arguments) {
-        parts.append(part.characters());
-    }
-    parts.append(nullptr);
-
-    const char** argv = parts.data();
-
-    posix_spawn_file_actions_t action;
-    posix_spawn_file_actions_init(&action);
-    if (chdir.has_value()) {
-        posix_spawn_file_actions_addchdir(&action, chdir.value().string().characters());
-    }
-    posix_spawn_file_actions_adddup2(&action, stdout_pipe[1], STDOUT_FILENO);
-    posix_spawn_file_actions_adddup2(&action, stderr_pipe[1], STDERR_FILENO);
-
-    pid_t pid;
-    if ((errno = posix_spawnp(&pid, program.characters(), &action, nullptr, const_cast<char**>(argv), environ))) {
-        perror("posix_spawn");
-        ASSERT_NOT_REACHED();
-    }
-    int wstatus;
-    waitpid(pid, &wstatus, 0);
-    posix_spawn_file_actions_destroy(&action);
-
-    // close the write-ends so reading wouldn't block
-    close(stdout_pipe[1]);
-    close(stderr_pipe[1]);
-
-    auto read_all_from_pipe = [](int pipe[2]) {
-        auto result_file = Core::File::construct();
-        if (!result_file->open(pipe[0], Core::IODevice::ReadOnly, Core::File::ShouldCloseFileDescriptor::Yes)) {
-            perror("open");
-            ASSERT_NOT_REACHED();
-        }
-        return String::copy(result_file->read_all());
-    };
-
-    if (WEXITSTATUS(wstatus) != 0) {
-#    ifdef DBG_FAILED_COMMANDS
-        dbgln("command failed. stderr: {}", read_all_from_pipe(stderr_pipe));
-#    endif
-        return {};
-    }
-
-    auto result = read_all_from_pipe(stdout_pipe);
-    if (result.is_null())
-        return "";
-    return result;
-}
-
-#endif
-
-}
diff --git a/Libraries/LibCore/Command.h b/Libraries/LibCore/Command.h
deleted file mode 100644
index 725c6b55a2..0000000000
--- a/Libraries/LibCore/Command.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright (c) 2020, Itamar S. <itamar8910@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/LexicalPath.h>
-#include <AK/Optional.h>
-#include <AK/String.h>
-#include <spawn.h>
-
-namespace Core {
-
-// If the executed command fails, the returned String will be in the null state.
-String command(const String& program, const Vector<String>& arguments, Optional<LexicalPath> chdir);
-String command(const String& command_string, Optional<LexicalPath> chdir);
-
-}
diff --git a/Libraries/LibCore/ConfigFile.cpp b/Libraries/LibCore/ConfigFile.cpp
deleted file mode 100644
index cb7e68576c..0000000000
--- a/Libraries/LibCore/ConfigFile.cpp
+++ /dev/null
@@ -1,242 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/ByteBuffer.h>
-#include <AK/StringBuilder.h>
-#include <LibCore/ConfigFile.h>
-#include <LibCore/File.h>
-#include <LibCore/StandardPaths.h>
-#include <pwd.h>
-#include <stdio.h>
-#include <unistd.h>
-
-namespace Core {
-
-NonnullRefPtr<ConfigFile> ConfigFile::get_for_lib(const String& lib_name)
-{
-    String directory = StandardPaths::config_directory();
-    auto path = String::formatted("{}/lib/{}.ini", directory, lib_name);
-
-    return adopt(*new ConfigFile(path));
-}
-
-NonnullRefPtr<ConfigFile> ConfigFile::get_for_app(const String& app_name)
-{
-    String directory = StandardPaths::config_directory();
-    auto path = String::formatted("{}/{}.ini", directory, app_name);
-    return adopt(*new ConfigFile(path));
-}
-
-NonnullRefPtr<ConfigFile> ConfigFile::get_for_system(const String& app_name)
-{
-    auto path = String::formatted("/etc/{}.ini", app_name);
-    return adopt(*new ConfigFile(path));
-}
-
-NonnullRefPtr<ConfigFile> ConfigFile::open(const String& path)
-{
-    return adopt(*new ConfigFile(path));
-}
-
-ConfigFile::ConfigFile(const String& file_name)
-    : m_file_name(file_name)
-{
-    reparse();
-}
-
-ConfigFile::~ConfigFile()
-{
-    sync();
-}
-
-void ConfigFile::reparse()
-{
-    m_groups.clear();
-
-    auto file = File::construct(m_file_name);
-    if (!file->open(IODevice::OpenMode::ReadOnly))
-        return;
-
-    HashMap<String, String>* current_group = nullptr;
-
-    while (file->can_read_line()) {
-        auto line = file->read_line();
-        auto* cp = line.characters();
-
-        while (*cp && (*cp == ' ' || *cp == '\t' || *cp == '\n'))
-            ++cp;
-
-        switch (*cp) {
-        case '\0': // EOL...
-        case '#':  // Comment, skip entire line.
-        case ';':  // -||-
-            continue;
-        case '[': { // Start of new group.
-            StringBuilder builder;
-            ++cp; // Skip the '['
-            while (*cp && (*cp != ']'))
-                builder.append(*(cp++));
-            current_group = &m_groups.ensure(builder.to_string());
-            break;
-        }
-        default: { // Start of key{
-            StringBuilder key_builder;
-            StringBuilder value_builder;
-            while (*cp && (*cp != '='))
-                key_builder.append(*(cp++));
-            ++cp; // Skip the '='
-            while (*cp && (*cp != '\n'))
-                value_builder.append(*(cp++));
-            if (!current_group) {
-                // We're not in a group yet, create one with the name ""...
-                current_group = &m_groups.ensure("");
-            }
-            current_group->set(key_builder.to_string(), value_builder.to_string());
-        }
-        }
-    }
-}
-
-String ConfigFile::read_entry(const String& group, const String& key, const String& default_value) const
-{
-    if (!has_key(group, key)) {
-        return default_value;
-    }
-    auto it = m_groups.find(group);
-    auto jt = it->value.find(key);
-    return jt->value;
-}
-
-int ConfigFile::read_num_entry(const String& group, const String& key, int default_value) const
-{
-    if (!has_key(group, key)) {
-        return default_value;
-    }
-
-    return read_entry(group, key).to_int().value_or(default_value);
-}
-
-bool ConfigFile::read_bool_entry(const String& group, const String& key, bool default_value) const
-{
-    auto value = read_entry(group, key, default_value ? "1" : "0");
-    if (value == "1" || value.to_lowercase() == "true")
-        return 1;
-    return 0;
-}
-
-void ConfigFile::write_entry(const String& group, const String& key, const String& value)
-{
-    m_groups.ensure(group).ensure(key) = value;
-    m_dirty = true;
-}
-
-void ConfigFile::write_num_entry(const String& group, const String& key, int value)
-{
-    write_entry(group, key, String::number(value));
-}
-void ConfigFile::write_bool_entry(const String& group, const String& key, bool value)
-{
-    write_entry(group, key, value ? "1" : "0");
-}
-void ConfigFile::write_color_entry(const String& group, const String& key, Color value)
-{
-    write_entry(group, key, String::formatted("{},{},{},{}", value.red(), value.green(), value.blue(), value.alpha()));
-}
-
-bool ConfigFile::sync()
-{
-    if (!m_dirty)
-        return true;
-
-    FILE* fp = fopen(m_file_name.characters(), "wb");
-    if (!fp)
-        return false;
-
-    for (auto& it : m_groups) {
-        outln(fp, "[{}]", it.key);
-        for (auto& jt : it.value)
-            outln(fp, "{}={}", jt.key, jt.value);
-        outln(fp);
-    }
-
-    fclose(fp);
-
-    m_dirty = false;
-    return true;
-}
-
-void ConfigFile::dump() const
-{
-    for (auto& it : m_groups) {
-        outln("[{}]", it.key);
-        for (auto& jt : it.value)
-            outln("{}={}", jt.key, jt.value);
-        outln();
-    }
-}
-
-Vector<String> ConfigFile::groups() const
-{
-    return m_groups.keys();
-}
-
-Vector<String> ConfigFile::keys(const String& group) const
-{
-    auto it = m_groups.find(group);
-    if (it == m_groups.end())
-        return {};
-    return it->value.keys();
-}
-
-bool ConfigFile::has_key(const String& group, const String& key) const
-{
-    auto it = m_groups.find(group);
-    if (it == m_groups.end())
-        return {};
-    return it->value.contains(key);
-}
-
-bool ConfigFile::has_group(const String& group) const
-{
-    return m_groups.contains(group);
-}
-
-void ConfigFile::remove_group(const String& group)
-{
-    m_groups.remove(group);
-    m_dirty = true;
-}
-
-void ConfigFile::remove_entry(const String& group, const String& key)
-{
-    auto it = m_groups.find(group);
-    if (it == m_groups.end())
-        return;
-    it->value.remove(key);
-    m_dirty = true;
-}
-
-}
diff --git a/Libraries/LibCore/ConfigFile.h b/Libraries/LibCore/ConfigFile.h
deleted file mode 100644
index 24865a0e48..0000000000
--- a/Libraries/LibCore/ConfigFile.h
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/HashMap.h>
-#include <AK/RefCounted.h>
-#include <AK/RefPtr.h>
-#include <AK/String.h>
-#include <AK/Vector.h>
-#include <LibGfx/Color.h>
-
-namespace Core {
-
-class ConfigFile : public RefCounted<ConfigFile> {
-public:
-    static NonnullRefPtr<ConfigFile> get_for_lib(const String& lib_name);
-    static NonnullRefPtr<ConfigFile> get_for_app(const String& app_name);
-    static NonnullRefPtr<ConfigFile> get_for_system(const String& app_name);
-    static NonnullRefPtr<ConfigFile> open(const String& path);
-    ~ConfigFile();
-
-    bool has_group(const String&) const;
-    bool has_key(const String& group, const String& key) const;
-
-    Vector<String> groups() const;
-    Vector<String> keys(const String& group) const;
-
-    String read_entry(const String& group, const String& key, const String& default_value = String()) const;
-    int read_num_entry(const String& group, const String& key, int default_value = 0) const;
-    bool read_bool_entry(const String& group, const String& key, bool default_value = false) const;
-
-    void write_entry(const String& group, const String& key, const String& value);
-    void write_num_entry(const String& group, const String& key, int value);
-    void write_bool_entry(const String& group, const String& key, bool value);
-    void write_color_entry(const String& group, const String& key, Color value);
-
-    void dump() const;
-
-    bool is_dirty() const { return m_dirty; }
-
-    bool sync();
-
-    void remove_group(const String& group);
-    void remove_entry(const String& group, const String& key);
-
-    String file_name() const { return m_file_name; }
-
-private:
-    explicit ConfigFile(const String& file_name);
-
-    void reparse();
-
-    String m_file_name;
-    HashMap<String, HashMap<String, String>> m_groups;
-    bool m_dirty { false };
-};
-
-}
diff --git a/Libraries/LibCore/DateTime.cpp b/Libraries/LibCore/DateTime.cpp
deleted file mode 100644
index 804abac3de..0000000000
--- a/Libraries/LibCore/DateTime.cpp
+++ /dev/null
@@ -1,263 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/StringBuilder.h>
-#include <AK/Time.h>
-#include <LibCore/DateTime.h>
-#include <sys/time.h>
-#include <time.h>
-
-namespace Core {
-
-DateTime DateTime::now()
-{
-    return from_timestamp(time(nullptr));
-}
-
-DateTime DateTime::create(unsigned year, unsigned month, unsigned day, unsigned hour, unsigned minute, unsigned second)
-{
-    DateTime dt;
-    dt.set_time(year, month, day, hour, minute, second);
-    return dt;
-}
-
-DateTime DateTime::from_timestamp(time_t timestamp)
-{
-    struct tm tm;
-    localtime_r(&timestamp, &tm);
-    DateTime dt;
-    dt.m_year = tm.tm_year + 1900;
-    dt.m_month = tm.tm_mon + 1;
-    dt.m_day = tm.tm_mday;
-    dt.m_hour = tm.tm_hour;
-    dt.m_minute = tm.tm_min;
-    dt.m_second = tm.tm_sec;
-    dt.m_timestamp = timestamp;
-    return dt;
-}
-
-unsigned DateTime::weekday() const
-{
-    return ::day_of_week(m_year, m_month, m_day);
-}
-
-unsigned DateTime::days_in_month() const
-{
-    return ::days_in_month(m_year, m_month);
-}
-
-unsigned DateTime::day_of_year() const
-{
-    return ::day_of_year(m_year, m_month, m_day);
-}
-
-bool DateTime::is_leap_year() const
-{
-    return ::is_leap_year(m_year);
-}
-
-void DateTime::set_time(unsigned year, unsigned month, unsigned day, unsigned hour, unsigned minute, unsigned second)
-{
-    struct tm tm = {};
-    tm.tm_sec = (int)second;
-    tm.tm_min = (int)minute;
-    tm.tm_hour = (int)hour;
-    tm.tm_mday = (int)day;
-    tm.tm_mon = (int)month - 1;
-    tm.tm_year = (int)year - 1900;
-    tm.tm_isdst = -1;
-    // mktime() doesn't read tm.tm_wday and tm.tm_yday, no need to fill them in.
-
-    m_timestamp = mktime(&tm);
-
-    // mktime() normalizes the components to the right ranges (Jan 32 -> Feb 1 etc), so read fields back out from tm.
-    m_year = tm.tm_year + 1900;
-    m_month = tm.tm_mon + 1;
-    m_day = tm.tm_mday;
-    m_hour = tm.tm_hour;
-    m_minute = tm.tm_min;
-    m_second = tm.tm_sec;
-}
-
-String DateTime::to_string(const String& format) const
-{
-
-    const char wday_short_names[7][4] = {
-        "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
-    };
-    const char wday_long_names[7][10] = {
-        "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
-    };
-    const char mon_short_names[12][4] = {
-        "Jan", "Feb", "Mar", "Apr", "May", "Jun",
-        "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
-    };
-    const char mon_long_names[12][10] = {
-        "January", "February", "March", "April", "May", "June",
-        "July", "August", "September", "October", "November", "December"
-    };
-
-    struct tm tm;
-    localtime_r(&m_timestamp, &tm);
-    StringBuilder builder;
-    const int format_len = format.length();
-
-    for (int i = 0; i < format_len; ++i) {
-        if (format[i] != '%') {
-            builder.append(format[i]);
-        } else {
-            if (++i == format_len)
-                return String();
-
-            switch (format[i]) {
-            case 'a':
-                builder.append(wday_short_names[tm.tm_wday]);
-                break;
-            case 'A':
-                builder.append(wday_long_names[tm.tm_wday]);
-                break;
-            case 'b':
-                builder.append(mon_short_names[tm.tm_mon]);
-                break;
-            case 'B':
-                builder.append(mon_long_names[tm.tm_mon]);
-                break;
-            case 'C':
-                builder.appendf("%02d", (tm.tm_year + 1900) / 100);
-                break;
-            case 'd':
-                builder.appendf("%02d", tm.tm_mday);
-                break;
-            case 'D':
-                builder.appendf("%02d/%02d/%02d", tm.tm_mon + 1, tm.tm_mday, (tm.tm_year + 1900) % 100);
-                break;
-            case 'e':
-                builder.appendf("%2d", tm.tm_mday);
-                break;
-            case 'h':
-                builder.append(mon_short_names[tm.tm_mon]);
-                break;
-            case 'H':
-                builder.appendf("%02d", tm.tm_hour);
-                break;
-            case 'I':
-                builder.appendf("%02d", tm.tm_hour % 12);
-                break;
-            case 'j':
-                builder.appendf("%03d", tm.tm_yday + 1);
-                break;
-            case 'm':
-                builder.appendf("%02d", tm.tm_mon + 1);
-                break;
-            case 'M':
-                builder.appendf("%02d", tm.tm_min);
-                break;
-            case 'n':
-                builder.append('\n');
-                break;
-            case 'p':
-                builder.append(tm.tm_hour < 12 ? "a.m." : "p.m.");
-                break;
-            case 'r':
-                builder.appendf("%02d:%02d:%02d %s", tm.tm_hour % 12, tm.tm_min, tm.tm_sec, tm.tm_hour < 12 ? "a.m." : "p.m.");
-                break;
-            case 'R':
-                builder.appendf("%02d:%02d", tm.tm_hour, tm.tm_min);
-                break;
-            case 'S':
-                builder.appendf("%02d", tm.tm_sec);
-                break;
-            case 't':
-                builder.append('\t');
-                break;
-            case 'T':
-                builder.appendf("%02d:%02d:%02d", tm.tm_hour, tm.tm_min, tm.tm_sec);
-                break;
-            case 'u':
-                builder.appendf("%d", tm.tm_wday ? tm.tm_wday : 7);
-                break;
-            case 'U': {
-                const int wday_of_year_beginning = (tm.tm_wday + 6 * tm.tm_yday) % 7;
-                const int week_number = (tm.tm_yday + wday_of_year_beginning) / 7;
-                builder.appendf("%02d", week_number);
-                break;
-            }
-            case 'V': {
-                const int wday_of_year_beginning = (tm.tm_wday + 6 + 6 * tm.tm_yday) % 7;
-                int week_number = (tm.tm_yday + wday_of_year_beginning) / 7 + 1;
-                if (wday_of_year_beginning > 3) {
-                    if (tm.tm_yday >= 7 - wday_of_year_beginning)
-                        --week_number;
-                    else {
-                        const int days_of_last_year = days_in_year(tm.tm_year + 1900 - 1);
-                        const int wday_of_last_year_beginning = (wday_of_year_beginning + 6 * days_of_last_year) % 7;
-                        week_number = (days_of_last_year + wday_of_last_year_beginning) / 7 + 1;
-                        if (wday_of_last_year_beginning > 3)
-                            --week_number;
-                    }
-                }
-                builder.appendf("%02d", week_number);
-                break;
-            }
-            case 'w':
-                builder.appendf("%d", tm.tm_wday);
-                break;
-            case 'W': {
-                const int wday_of_year_beginning = (tm.tm_wday + 6 + 6 * tm.tm_yday) % 7;
-                const int week_number = (tm.tm_yday + wday_of_year_beginning) / 7;
-                builder.appendf("%02d", week_number);
-                break;
-            }
-            case 'y':
-                builder.appendf("%02d", (tm.tm_year + 1900) % 100);
-                break;
-            case 'Y':
-                builder.appendf("%d", tm.tm_year + 1900);
-                break;
-            case '%':
-                builder.append('%');
-                break;
-            default:
-                return String();
-            }
-        }
-    }
-
-    return builder.build();
-}
-
-bool DateTime::is_before(const String& other) const
-{
-    auto now_string = String::formatted("{:04}{:02}{:02}{:02}{:02}{:02}Z", year(), month(), weekday(), hour(), minute(), second());
-    return __builtin_strcasecmp(now_string.characters(), other.characters()) < 0;
-}
-
-const LogStream& operator<<(const LogStream& stream, const DateTime& value)
-{
-    return stream << value.to_string();
-}
-
-}
diff --git a/Libraries/LibCore/DateTime.h b/Libraries/LibCore/DateTime.h
deleted file mode 100644
index 15515cc0fd..0000000000
--- a/Libraries/LibCore/DateTime.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/String.h>
-#include <time.h>
-
-namespace Core {
-
-// Represents a time in local time.
-class DateTime {
-public:
-    time_t timestamp() const { return m_timestamp; }
-
-    unsigned year() const { return m_year; }
-    unsigned month() const { return m_month; }
-    unsigned day() const { return m_day; }
-
-    unsigned hour() const { return m_hour; }
-    unsigned minute() const { return m_minute; }
-    unsigned second() const { return m_second; }
-    unsigned weekday() const;
-    unsigned days_in_month() const;
-    unsigned day_of_year() const;
-    bool is_leap_year() const;
-
-    void set_time(unsigned year, unsigned month = 1, unsigned day = 0, unsigned hour = 0, unsigned minute = 0, unsigned second = 0);
-    String to_string(const String& format = "%Y-%m-%d %H:%M:%S") const;
-
-    static DateTime create(unsigned year, unsigned month = 1, unsigned day = 0, unsigned hour = 0, unsigned minute = 0, unsigned second = 0);
-    static DateTime now();
-    static DateTime from_timestamp(time_t);
-
-    // FIXME: This should be replaced with a proper comparison
-    //        operator when we get the equivalent of strptime
-    bool is_before(const String&) const;
-
-private:
-    time_t m_timestamp { 0 };
-    unsigned m_year { 0 };
-    unsigned m_month { 0 };
-    unsigned m_day { 0 };
-    unsigned m_hour { 0 };
-    unsigned m_minute { 0 };
-    unsigned m_second { 0 };
-};
-
-const LogStream& operator<<(const LogStream&, const DateTime&);
-
-}
diff --git a/Libraries/LibCore/DirIterator.cpp b/Libraries/LibCore/DirIterator.cpp
deleted file mode 100644
index 3dbeecf24f..0000000000
--- a/Libraries/LibCore/DirIterator.cpp
+++ /dev/null
@@ -1,121 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/Vector.h>
-#include <LibCore/DirIterator.h>
-#include <errno.h>
-
-namespace Core {
-
-DirIterator::DirIterator(const StringView& path, Flags flags)
-    : m_path(path)
-    , m_flags(flags)
-{
-    m_dir = opendir(path.to_string().characters());
-    if (!m_dir) {
-        m_error = errno;
-    }
-}
-
-DirIterator::~DirIterator()
-{
-    if (m_dir) {
-        closedir(m_dir);
-        m_dir = nullptr;
-    }
-}
-
-bool DirIterator::advance_next()
-{
-    if (!m_dir)
-        return false;
-
-    while (true) {
-        errno = 0;
-        auto* de = readdir(m_dir);
-        if (!de) {
-            m_error = errno;
-            m_next = String();
-            return false;
-        }
-
-        m_next = de->d_name;
-        if (m_next.is_null())
-            return false;
-
-        if (m_flags & Flags::SkipDots && m_next.starts_with('.'))
-            continue;
-
-        if (m_flags & Flags::SkipParentAndBaseDir && (m_next == "." || m_next == ".."))
-            continue;
-
-        return !m_next.is_empty();
-    }
-}
-
-bool DirIterator::has_next()
-{
-    if (!m_next.is_null())
-        return true;
-
-    return advance_next();
-}
-
-String DirIterator::next_path()
-{
-    if (m_next.is_null())
-        advance_next();
-
-    auto tmp = m_next;
-    m_next = String();
-    return tmp;
-}
-
-String DirIterator::next_full_path()
-{
-    return String::formatted("{}/{}", m_path, next_path());
-}
-
-String find_executable_in_path(String filename)
-{
-    if (filename.starts_with('/')) {
-        if (access(filename.characters(), X_OK) == 0)
-            return filename;
-
-        return {};
-    }
-
-    for (auto directory : String { getenv("PATH") }.split(':')) {
-        auto fullpath = String::formatted("{}/{}", directory, filename);
-
-        if (access(fullpath.characters(), X_OK) == 0)
-            return fullpath;
-    }
-
-    return {};
-}
-
-}
diff --git a/Libraries/LibCore/DirIterator.h b/Libraries/LibCore/DirIterator.h
deleted file mode 100644
index 7f423b4f17..0000000000
--- a/Libraries/LibCore/DirIterator.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/String.h>
-#include <dirent.h>
-#include <string.h>
-
-namespace Core {
-
-class DirIterator {
-public:
-    enum Flags {
-        NoFlags = 0x0,
-        SkipDots = 0x1,
-        SkipParentAndBaseDir = 0x2,
-    };
-
-    DirIterator(const StringView& path, Flags = Flags::NoFlags);
-    ~DirIterator();
-
-    bool has_error() const { return m_error != 0; }
-    int error() const { return m_error; }
-    const char* error_string() const { return strerror(m_error); }
-    bool has_next();
-    String next_path();
-    String next_full_path();
-
-private:
-    DIR* m_dir = nullptr;
-    int m_error = 0;
-    String m_next;
-    String m_path;
-    int m_flags;
-
-    bool advance_next();
-};
-
-String find_executable_in_path(String filename);
-
-}
diff --git a/Libraries/LibCore/DirectoryWatcher.cpp b/Libraries/LibCore/DirectoryWatcher.cpp
deleted file mode 100644
index a363c2461d..0000000000
--- a/Libraries/LibCore/DirectoryWatcher.cpp
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * Copyright (c) 2020, Itamar S. <itamar8910@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "DirectoryWatcher.h"
-#include <AK/LexicalPath.h>
-#include <AK/Optional.h>
-#include <LibCore/DirIterator.h>
-#include <fcntl.h>
-#include <sys/stat.h>
-
-namespace Core {
-
-// Only supported in serenity mode because we use `watch_file`
-#ifdef __serenity__
-
-DirectoryWatcher::DirectoryWatcher(const String& path)
-    : m_path(path)
-{
-    m_watcher_fd = watch_file(path.characters(), path.length());
-    ASSERT(m_watcher_fd != -1);
-}
-
-DirectoryWatcher::~DirectoryWatcher()
-{
-    close(m_watcher_fd);
-}
-
-Optional<DirectoryWatcher::Event> DirectoryWatcher::wait_for_event()
-{
-    InodeWatcherEvent event {};
-    int rc = read(m_watcher_fd, &event, sizeof(event));
-    if (rc <= 0)
-        return {};
-
-    Event result;
-    if (event.type == InodeWatcherEvent::Type::ChildAdded)
-        result.type = Event::Type::ChildAdded;
-    else if (event.type == InodeWatcherEvent::Type::ChildRemoved)
-        result.type = Event::Type::ChildRemoved;
-    else
-        return {};
-
-    auto child_path = get_child_with_inode_index(event.inode_index);
-    if (!LexicalPath(child_path).is_valid())
-        return {};
-
-    result.child_path = child_path;
-    return result;
-}
-
-String DirectoryWatcher::get_child_with_inode_index(unsigned child_inode_index) const
-{
-    DirIterator iterator(m_path, Core::DirIterator::SkipDots);
-    if (iterator.has_error()) {
-        return {};
-    }
-
-    while (iterator.has_next()) {
-        auto child_full_path = String::formatted("{}/{}", m_path, iterator.next_path());
-        struct stat st;
-
-        if (lstat(child_full_path.characters(), &st)) {
-            return {};
-        }
-
-        if (st.st_ino == child_inode_index) {
-            return child_full_path;
-        }
-    }
-    return {};
-}
-
-#endif
-
-}
diff --git a/Libraries/LibCore/DirectoryWatcher.h b/Libraries/LibCore/DirectoryWatcher.h
deleted file mode 100644
index 63be2c1aa7..0000000000
--- a/Libraries/LibCore/DirectoryWatcher.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright (c) 2020, Itamar S. <itamar8910@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Function.h>
-#include <AK/Noncopyable.h>
-#include <AK/String.h>
-#include <Kernel/API/InodeWatcherEvent.h>
-
-namespace Core {
-
-class DirectoryWatcher {
-    AK_MAKE_NONCOPYABLE(DirectoryWatcher);
-
-public:
-    explicit DirectoryWatcher(const String& path);
-    ~DirectoryWatcher();
-
-    struct Event {
-        enum class Type {
-            ChildAdded,
-            ChildRemoved,
-        };
-        Type type;
-        String child_path;
-    };
-
-    Optional<Event> wait_for_event();
-
-private:
-    String get_child_with_inode_index(unsigned) const;
-
-    String m_path;
-    int m_watcher_fd { -1 };
-};
-
-}
diff --git a/Libraries/LibCore/ElapsedTimer.cpp b/Libraries/LibCore/ElapsedTimer.cpp
deleted file mode 100644
index 9d0fc95378..0000000000
--- a/Libraries/LibCore/ElapsedTimer.cpp
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/Assertions.h>
-#include <AK/Time.h>
-#include <LibCore/ElapsedTimer.h>
-#include <sys/time.h>
-#include <time.h>
-
-namespace Core {
-
-void ElapsedTimer::start()
-{
-    m_valid = true;
-    timespec now_spec;
-    clock_gettime(m_precise ? CLOCK_MONOTONIC : CLOCK_MONOTONIC_COARSE, &now_spec);
-    m_origin_time.tv_sec = now_spec.tv_sec;
-    m_origin_time.tv_usec = now_spec.tv_nsec / 1000;
-}
-
-int ElapsedTimer::elapsed() const
-{
-    ASSERT(is_valid());
-    struct timeval now;
-    timespec now_spec;
-    clock_gettime(m_precise ? CLOCK_MONOTONIC : CLOCK_MONOTONIC_COARSE, &now_spec);
-    now.tv_sec = now_spec.tv_sec;
-    now.tv_usec = now_spec.tv_nsec / 1000;
-    struct timeval diff;
-    timeval_sub(now, m_origin_time, diff);
-    return diff.tv_sec * 1000 + diff.tv_usec / 1000;
-}
-
-}
diff --git a/Libraries/LibCore/ElapsedTimer.h b/Libraries/LibCore/ElapsedTimer.h
deleted file mode 100644
index 224eb139e3..0000000000
--- a/Libraries/LibCore/ElapsedTimer.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <sys/time.h>
-
-namespace Core {
-
-class ElapsedTimer {
-public:
-    ElapsedTimer(bool precise = false)
-        : m_precise(precise)
-    {
-    }
-
-    bool is_valid() const { return m_valid; }
-    void start();
-    int elapsed() const;
-
-    const struct timeval& origin_time() const { return m_origin_time; }
-
-private:
-    bool m_precise { false };
-    bool m_valid { false };
-    struct timeval m_origin_time {
-        0, 0
-    };
-};
-
-}
diff --git a/Libraries/LibCore/Event.cpp b/Libraries/LibCore/Event.cpp
deleted file mode 100644
index fac44e5537..0000000000
--- a/Libraries/LibCore/Event.cpp
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/WeakPtr.h>
-#include <LibCore/Event.h>
-#include <LibCore/Object.h>
-
-namespace Core {
-
-ChildEvent::ChildEvent(Type type, Object& child, Object* insertion_before_child)
-    : Core::Event(type)
-    , m_child(child.make_weak_ptr())
-    , m_insertion_before_child(AK::try_make_weak_ptr(insertion_before_child))
-{
-}
-
-ChildEvent::~ChildEvent()
-{
-}
-
-Object* ChildEvent::child()
-{
-    if (auto ref = m_child.strong_ref())
-        return ref.ptr();
-    return nullptr;
-}
-
-const Object* ChildEvent::child() const
-{
-    if (auto ref = m_child.strong_ref())
-        return ref.ptr();
-    return nullptr;
-}
-
-Object* ChildEvent::insertion_before_child()
-{
-    if (auto ref = m_insertion_before_child.strong_ref())
-        return ref.ptr();
-    return nullptr;
-}
-
-const Object* ChildEvent::insertion_before_child() const
-{
-    if (auto ref = m_insertion_before_child.strong_ref())
-        return ref.ptr();
-    return nullptr;
-}
-
-}
diff --git a/Libraries/LibCore/Event.h b/Libraries/LibCore/Event.h
deleted file mode 100644
index 46dc3dc375..0000000000
--- a/Libraries/LibCore/Event.h
+++ /dev/null
@@ -1,159 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Function.h>
-#include <AK/String.h>
-#include <AK/Types.h>
-#include <AK/WeakPtr.h>
-#include <LibCore/Forward.h>
-
-namespace Core {
-
-class Event {
-public:
-    enum Type {
-        Invalid = 0,
-        Quit,
-        Timer,
-        NotifierRead,
-        NotifierWrite,
-        DeferredInvoke,
-        ChildAdded,
-        ChildRemoved,
-        Custom,
-    };
-
-    Event() { }
-    explicit Event(unsigned type)
-        : m_type(type)
-    {
-    }
-    virtual ~Event() { }
-
-    unsigned type() const { return m_type; }
-
-    bool is_accepted() const { return m_accepted; }
-    void accept() { m_accepted = true; }
-    void ignore() { m_accepted = false; }
-
-private:
-    unsigned m_type { Type::Invalid };
-    bool m_accepted { true };
-};
-
-class DeferredInvocationEvent : public Event {
-    friend class EventLoop;
-
-public:
-    DeferredInvocationEvent(Function<void(Object&)> invokee)
-        : Event(Event::Type::DeferredInvoke)
-        , m_invokee(move(invokee))
-    {
-    }
-
-private:
-    Function<void(Object&)> m_invokee;
-};
-
-class TimerEvent final : public Event {
-public:
-    explicit TimerEvent(int timer_id)
-        : Event(Event::Timer)
-        , m_timer_id(timer_id)
-    {
-    }
-    ~TimerEvent() { }
-
-    int timer_id() const { return m_timer_id; }
-
-private:
-    int m_timer_id;
-};
-
-class NotifierReadEvent final : public Event {
-public:
-    explicit NotifierReadEvent(int fd)
-        : Event(Event::NotifierRead)
-        , m_fd(fd)
-    {
-    }
-    ~NotifierReadEvent() { }
-
-    int fd() const { return m_fd; }
-
-private:
-    int m_fd;
-};
-
-class NotifierWriteEvent final : public Event {
-public:
-    explicit NotifierWriteEvent(int fd)
-        : Event(Event::NotifierWrite)
-        , m_fd(fd)
-    {
-    }
-    ~NotifierWriteEvent() { }
-
-    int fd() const { return m_fd; }
-
-private:
-    int m_fd;
-};
-
-class ChildEvent final : public Event {
-public:
-    ChildEvent(Type, Object& child, Object* insertion_before_child = nullptr);
-    ~ChildEvent();
-
-    Object* child();
-    const Object* child() const;
-
-    Object* insertion_before_child();
-    const Object* insertion_before_child() const;
-
-private:
-    WeakPtr<Object> m_child;
-    WeakPtr<Object> m_insertion_before_child;
-};
-
-class CustomEvent : public Event {
-public:
-    CustomEvent(int custom_type)
-        : Event(Event::Type::Custom)
-        , m_custom_type(custom_type)
-    {
-    }
-    ~CustomEvent() { }
-
-    int custom_type() const { return m_custom_type; }
-
-private:
-    int m_custom_type { 0 };
-};
-
-}
diff --git a/Libraries/LibCore/EventLoop.cpp b/Libraries/LibCore/EventLoop.cpp
deleted file mode 100644
index c13cc986ea..0000000000
--- a/Libraries/LibCore/EventLoop.cpp
+++ /dev/null
@@ -1,835 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/Badge.h>
-#include <AK/ByteBuffer.h>
-#include <AK/IDAllocator.h>
-#include <AK/JsonObject.h>
-#include <AK/JsonValue.h>
-#include <AK/NeverDestroyed.h>
-#include <AK/Singleton.h>
-#include <AK/TemporaryChange.h>
-#include <AK/Time.h>
-#include <LibCore/Event.h>
-#include <LibCore/EventLoop.h>
-#include <LibCore/LocalServer.h>
-#include <LibCore/LocalSocket.h>
-#include <LibCore/Notifier.h>
-#include <LibCore/Object.h>
-#include <LibCore/SyscallUtils.h>
-#include <LibThread/Lock.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/select.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <time.h>
-#include <unistd.h>
-
-//#define EVENTLOOP_DEBUG
-//#define DEFERRED_INVOKE_DEBUG
-
-namespace Core {
-
-class RPCClient;
-
-struct EventLoopTimer {
-    int timer_id { 0 };
-    int interval { 0 };
-    timeval fire_time { 0, 0 };
-    bool should_reload { false };
-    TimerShouldFireWhenNotVisible fire_when_not_visible { TimerShouldFireWhenNotVisible::No };
-    WeakPtr<Object> owner;
-
-    void reload(const timeval& now);
-    bool has_expired(const timeval& now) const;
-};
-
-struct EventLoop::Private {
-    LibThread::Lock lock;
-};
-
-static EventLoop* s_main_event_loop;
-static Vector<EventLoop*>* s_event_loop_stack;
-static NeverDestroyed<IDAllocator> s_id_allocator;
-static HashMap<int, NonnullOwnPtr<EventLoopTimer>>* s_timers;
-static HashTable<Notifier*>* s_notifiers;
-int EventLoop::s_wake_pipe_fds[2];
-static RefPtr<LocalServer> s_rpc_server;
-HashMap<int, RefPtr<RPCClient>> s_rpc_clients;
-
-class SignalHandlers : public RefCounted<SignalHandlers> {
-    AK_MAKE_NONCOPYABLE(SignalHandlers);
-    AK_MAKE_NONMOVABLE(SignalHandlers);
-
-public:
-    SignalHandlers(int signo, void (*handle_signal)(int));
-    ~SignalHandlers();
-
-    void dispatch();
-    int add(Function<void(int)>&& handler);
-    bool remove(int handler_id);
-
-    bool is_empty() const
-    {
-        if (m_calling_handlers) {
-            for (auto& handler : m_handlers_pending) {
-                if (handler.value)
-                    return false; // an add is pending
-            }
-        }
-        return m_handlers.is_empty();
-    }
-
-    bool have(int handler_id) const
-    {
-        if (m_calling_handlers) {
-            auto it = m_handlers_pending.find(handler_id);
-            if (it != m_handlers_pending.end()) {
-                if (!it->value)
-                    return false; // a deletion is pending
-            }
-        }
-        return m_handlers.contains(handler_id);
-    }
-
-    int m_signo;
-    void (*m_original_handler)(int); // TODO: can't use sighandler_t?
-    HashMap<int, Function<void(int)>> m_handlers;
-    HashMap<int, Function<void(int)>> m_handlers_pending;
-    bool m_calling_handlers { false };
-};
-
-struct SignalHandlersInfo {
-    HashMap<int, NonnullRefPtr<SignalHandlers>> signal_handlers;
-    int next_signal_id { 0 };
-};
-
-template<bool create_if_null = true>
-inline SignalHandlersInfo* signals_info()
-{
-    static SignalHandlersInfo* s_signals;
-    return AK::Singleton<SignalHandlersInfo>::get(s_signals);
-}
-
-pid_t EventLoop::s_pid;
-
-class RPCClient : public Object {
-    C_OBJECT(RPCClient)
-public:
-    explicit RPCClient(RefPtr<LocalSocket> socket)
-        : m_socket(move(socket))
-        , m_client_id(s_id_allocator->allocate())
-    {
-        s_rpc_clients.set(m_client_id, this);
-        add_child(*m_socket);
-        m_socket->on_ready_to_read = [this] {
-            u32 length;
-            int nread = m_socket->read((u8*)&length, sizeof(length));
-            if (nread == 0) {
-#ifdef EVENTLOOP_DEBUG
-                dbgln("RPC client disconnected");
-#endif
-                shutdown();
-                return;
-            }
-            ASSERT(nread == sizeof(length));
-            auto request = m_socket->read(length);
-
-            auto request_json = JsonValue::from_string(request);
-            if (!request_json.has_value() || !request_json.value().is_object()) {
-                dbgln("RPC client sent invalid request");
-                shutdown();
-                return;
-            }
-
-            handle_request(request_json.value().as_object());
-        };
-    }
-    virtual ~RPCClient() override
-    {
-        if (auto inspected_object = m_inspected_object.strong_ref())
-            inspected_object->decrement_inspector_count({});
-    }
-
-    void send_response(const JsonObject& response)
-    {
-        auto serialized = response.to_string();
-        u32 length = serialized.length();
-        m_socket->write((const u8*)&length, sizeof(length));
-        m_socket->write(serialized);
-    }
-
-    void handle_request(const JsonObject& request)
-    {
-        auto type = request.get("type").as_string_or({});
-
-        if (type.is_null()) {
-            dbgln("RPC client sent request without type field");
-            return;
-        }
-
-        if (type == "Identify") {
-            JsonObject response;
-            response.set("type", type);
-            response.set("pid", getpid());
-#ifdef __serenity__
-            char buffer[1024];
-            if (get_process_name(buffer, sizeof(buffer)) >= 0) {
-                response.set("process_name", buffer);
-            } else {
-                response.set("process_name", JsonValue());
-            }
-#endif
-            send_response(response);
-            return;
-        }
-
-        if (type == "GetAllObjects") {
-            JsonObject response;
-            response.set("type", type);
-            JsonArray objects;
-            for (auto& object : Object::all_objects()) {
-                JsonObject json_object;
-                object.save_to(json_object);
-                objects.append(move(json_object));
-            }
-            response.set("objects", move(objects));
-            send_response(response);
-            return;
-        }
-
-        if (type == "SetInspectedObject") {
-            auto address = request.get("address").to_number<FlatPtr>();
-            for (auto& object : Object::all_objects()) {
-                if ((FlatPtr)&object == address) {
-                    if (auto inspected_object = m_inspected_object.strong_ref())
-                        inspected_object->decrement_inspector_count({});
-                    m_inspected_object = object;
-                    object.increment_inspector_count({});
-                    break;
-                }
-            }
-            return;
-        }
-
-        if (type == "SetProperty") {
-            auto address = request.get("address").to_number<FlatPtr>();
-            for (auto& object : Object::all_objects()) {
-                if ((FlatPtr)&object == address) {
-                    bool success = object.set_property(request.get("name").to_string(), request.get("value"));
-                    JsonObject response;
-                    response.set("type", "SetProperty");
-                    response.set("success", success);
-                    send_response(response);
-                    break;
-                }
-            }
-            return;
-        }
-
-        if (type == "Disconnect") {
-            shutdown();
-            return;
-        }
-    }
-
-    void shutdown()
-    {
-        s_rpc_clients.remove(m_client_id);
-        s_id_allocator->deallocate(m_client_id);
-    }
-
-private:
-    RefPtr<LocalSocket> m_socket;
-    WeakPtr<Object> m_inspected_object;
-    int m_client_id { -1 };
-};
-
-EventLoop::EventLoop()
-    : m_private(make<Private>())
-{
-    if (!s_event_loop_stack) {
-        s_event_loop_stack = new Vector<EventLoop*>;
-        s_timers = new HashMap<int, NonnullOwnPtr<EventLoopTimer>>;
-        s_notifiers = new HashTable<Notifier*>;
-    }
-
-    if (!s_main_event_loop) {
-        s_main_event_loop = this;
-        s_pid = getpid();
-#if defined(SOCK_NONBLOCK)
-        int rc = pipe2(s_wake_pipe_fds, O_CLOEXEC);
-#else
-        int rc = pipe(s_wake_pipe_fds);
-        fcntl(s_wake_pipe_fds[0], F_SETFD, FD_CLOEXEC);
-        fcntl(s_wake_pipe_fds[1], F_SETFD, FD_CLOEXEC);
-
-#endif
-        ASSERT(rc == 0);
-        s_event_loop_stack->append(this);
-
-        if (!s_rpc_server) {
-            if (!start_rpc_server())
-                dbgln("Core::EventLoop: Failed to start an RPC server");
-        }
-    }
-
-#ifdef EVENTLOOP_DEBUG
-    dbgln("{} Core::EventLoop constructed :)", getpid());
-#endif
-}
-
-EventLoop::~EventLoop()
-{
-}
-
-bool EventLoop::start_rpc_server()
-{
-    s_rpc_server = LocalServer::construct();
-    s_rpc_server->set_name("Core::EventLoop_RPC_server");
-    s_rpc_server->on_ready_to_accept = [&] {
-        RPCClient::construct(s_rpc_server->accept());
-    };
-    return s_rpc_server->listen(String::formatted("/tmp/rpc/{}", getpid()));
-}
-
-EventLoop& EventLoop::main()
-{
-    ASSERT(s_main_event_loop);
-    return *s_main_event_loop;
-}
-
-EventLoop& EventLoop::current()
-{
-    EventLoop* event_loop = s_event_loop_stack->last();
-    ASSERT(event_loop != nullptr);
-    return *event_loop;
-}
-
-void EventLoop::quit(int code)
-{
-#ifdef EVENTLOOP_DEBUG
-    dbgln("Core::EventLoop::quit({})", code);
-#endif
-    m_exit_requested = true;
-    m_exit_code = code;
-}
-
-void EventLoop::unquit()
-{
-#ifdef EVENTLOOP_DEBUG
-    dbgln("Core::EventLoop::unquit()");
-#endif
-    m_exit_requested = false;
-    m_exit_code = 0;
-}
-
-struct EventLoopPusher {
-public:
-    EventLoopPusher(EventLoop& event_loop)
-        : m_event_loop(event_loop)
-    {
-        if (&m_event_loop != s_main_event_loop) {
-            m_event_loop.take_pending_events_from(EventLoop::current());
-            s_event_loop_stack->append(&event_loop);
-        }
-    }
-    ~EventLoopPusher()
-    {
-        if (&m_event_loop != s_main_event_loop) {
-            s_event_loop_stack->take_last();
-            EventLoop::current().take_pending_events_from(m_event_loop);
-        }
-    }
-
-private:
-    EventLoop& m_event_loop;
-};
-
-int EventLoop::exec()
-{
-    EventLoopPusher pusher(*this);
-    for (;;) {
-        if (m_exit_requested)
-            return m_exit_code;
-        pump();
-    }
-    ASSERT_NOT_REACHED();
-}
-
-void EventLoop::pump(WaitMode mode)
-{
-    wait_for_event(mode);
-
-    decltype(m_queued_events) events;
-    {
-        LOCKER(m_private->lock);
-        events = move(m_queued_events);
-    }
-
-    for (size_t i = 0; i < events.size(); ++i) {
-        auto& queued_event = events.at(i);
-        auto receiver = queued_event.receiver.strong_ref();
-        auto& event = *queued_event.event;
-#ifdef EVENTLOOP_DEBUG
-        if (receiver)
-            dbgln("Core::EventLoop: {} event {}", *receiver, event.type());
-#endif
-        if (!receiver) {
-            switch (event.type()) {
-            case Event::Quit:
-                ASSERT_NOT_REACHED();
-                return;
-            default:
-#ifdef EVENTLOOP_DEBUG
-                dbgln("Event type {} with no receiver :(", event.type());
-#endif
-                break;
-            }
-        } else if (event.type() == Event::Type::DeferredInvoke) {
-#ifdef DEFERRED_INVOKE_DEBUG
-            dbgln("DeferredInvoke: receiver = {}", *receiver);
-#endif
-            static_cast<DeferredInvocationEvent&>(event).m_invokee(*receiver);
-        } else {
-            NonnullRefPtr<Object> protector(*receiver);
-            receiver->dispatch_event(event);
-        }
-
-        if (m_exit_requested) {
-            LOCKER(m_private->lock);
-#ifdef EVENTLOOP_DEBUG
-            dbgln("Core::EventLoop: Exit requested. Rejigging {} events.", events.size() - i);
-#endif
-            decltype(m_queued_events) new_event_queue;
-            new_event_queue.ensure_capacity(m_queued_events.size() + events.size());
-            for (++i; i < events.size(); ++i)
-                new_event_queue.unchecked_append(move(events[i]));
-            new_event_queue.append(move(m_queued_events));
-            m_queued_events = move(new_event_queue);
-            return;
-        }
-    }
-}
-
-void EventLoop::post_event(Object& receiver, NonnullOwnPtr<Event>&& event)
-{
-    LOCKER(m_private->lock);
-#ifdef EVENTLOOP_DEBUG
-    dbgln("Core::EventLoop::post_event: ({}) << receivier={}, event={}", m_queued_events.size(), receiver, event);
-#endif
-    m_queued_events.empend(receiver, move(event));
-}
-
-SignalHandlers::SignalHandlers(int signo, void (*handle_signal)(int))
-    : m_signo(signo)
-    , m_original_handler(signal(signo, handle_signal))
-{
-#ifdef EVENTLOOP_DEBUG
-    dbgln("Core::EventLoop: Registered handler for signal {}", m_signo);
-#endif
-}
-
-SignalHandlers::~SignalHandlers()
-{
-#ifdef EVENTLOOP_DEBUG
-    dbgln("Core::EventLoop: Unregistering handler for signal {}", m_signo);
-#endif
-    signal(m_signo, m_original_handler);
-}
-
-void SignalHandlers::dispatch()
-{
-    TemporaryChange change(m_calling_handlers, true);
-    for (auto& handler : m_handlers)
-        handler.value(m_signo);
-    if (!m_handlers_pending.is_empty()) {
-        // Apply pending adds/removes
-        for (auto& handler : m_handlers_pending) {
-            if (handler.value) {
-                auto result = m_handlers.set(handler.key, move(handler.value));
-                ASSERT(result == AK::HashSetResult::InsertedNewEntry);
-            } else {
-                m_handlers.remove(handler.key);
-            }
-        }
-        m_handlers_pending.clear();
-    }
-}
-
-int SignalHandlers::add(Function<void(int)>&& handler)
-{
-    int id = ++signals_info()->next_signal_id; // TODO: worry about wrapping and duplicates?
-    if (m_calling_handlers)
-        m_handlers_pending.set(id, move(handler));
-    else
-        m_handlers.set(id, move(handler));
-    return id;
-}
-
-bool SignalHandlers::remove(int handler_id)
-{
-    ASSERT(handler_id != 0);
-    if (m_calling_handlers) {
-        auto it = m_handlers.find(handler_id);
-        if (it != m_handlers.end()) {
-            // Mark pending remove
-            m_handlers_pending.set(handler_id, {});
-            return true;
-        }
-        it = m_handlers_pending.find(handler_id);
-        if (it != m_handlers_pending.end()) {
-            if (!it->value)
-                return false; // already was marked as deleted
-            it->value = nullptr;
-            return true;
-        }
-        return false;
-    }
-    return m_handlers.remove(handler_id);
-}
-
-void EventLoop::dispatch_signal(int signo)
-{
-    auto& info = *signals_info();
-    auto handlers = info.signal_handlers.find(signo);
-    if (handlers != info.signal_handlers.end()) {
-        // Make sure we bump the ref count while dispatching the handlers!
-        // This allows a handler to unregister/register while the handlers
-        // are being called!
-        auto handler = handlers->value;
-#ifdef EVENTLOOP_DEBUG
-        dbgln("Core::EventLoop: dispatching signal {}", signo);
-#endif
-        handler->dispatch();
-    }
-}
-
-void EventLoop::handle_signal(int signo)
-{
-    ASSERT(signo != 0);
-    // We MUST check if the current pid still matches, because there
-    // is a window between fork() and exec() where a signal delivered
-    // to our fork could be inadvertedly routed to the parent process!
-    if (getpid() == s_pid) {
-        int nwritten = write(s_wake_pipe_fds[1], &signo, sizeof(signo));
-        if (nwritten < 0) {
-            perror("EventLoop::register_signal: write");
-            ASSERT_NOT_REACHED();
-        }
-    } else {
-        // We're a fork who received a signal, reset s_pid
-        s_pid = 0;
-    }
-}
-
-int EventLoop::register_signal(int signo, Function<void(int)> handler)
-{
-    ASSERT(signo != 0);
-    auto& info = *signals_info();
-    auto handlers = info.signal_handlers.find(signo);
-    if (handlers == info.signal_handlers.end()) {
-        auto signal_handlers = adopt(*new SignalHandlers(signo, EventLoop::handle_signal));
-        auto handler_id = signal_handlers->add(move(handler));
-        info.signal_handlers.set(signo, move(signal_handlers));
-        return handler_id;
-    } else {
-        return handlers->value->add(move(handler));
-    }
-}
-
-void EventLoop::unregister_signal(int handler_id)
-{
-    ASSERT(handler_id != 0);
-    int remove_signo = 0;
-    auto& info = *signals_info();
-    for (auto& h : info.signal_handlers) {
-        auto& handlers = *h.value;
-        if (handlers.remove(handler_id)) {
-            if (handlers.is_empty())
-                remove_signo = handlers.m_signo;
-            break;
-        }
-    }
-    if (remove_signo != 0)
-        info.signal_handlers.remove(remove_signo);
-}
-
-void EventLoop::notify_forked(ForkEvent event)
-{
-    switch (event) {
-    case ForkEvent::Child:
-        s_main_event_loop = nullptr;
-        s_event_loop_stack->clear();
-        s_timers->clear();
-        s_notifiers->clear();
-        if (auto* info = signals_info<false>()) {
-            info->signal_handlers.clear();
-            info->next_signal_id = 0;
-        }
-        s_pid = 0;
-        s_rpc_server = nullptr;
-        s_rpc_clients.clear();
-        return;
-    }
-
-    ASSERT_NOT_REACHED();
-}
-
-void EventLoop::wait_for_event(WaitMode mode)
-{
-    fd_set rfds;
-    fd_set wfds;
-retry:
-    FD_ZERO(&rfds);
-    FD_ZERO(&wfds);
-
-    int max_fd = 0;
-    auto add_fd_to_set = [&max_fd](int fd, fd_set& set) {
-        FD_SET(fd, &set);
-        if (fd > max_fd)
-            max_fd = fd;
-    };
-
-    int max_fd_added = -1;
-    add_fd_to_set(s_wake_pipe_fds[0], rfds);
-    max_fd = max(max_fd, max_fd_added);
-    for (auto& notifier : *s_notifiers) {
-        if (notifier->event_mask() & Notifier::Read)
-            add_fd_to_set(notifier->fd(), rfds);
-        if (notifier->event_mask() & Notifier::Write)
-            add_fd_to_set(notifier->fd(), wfds);
-        if (notifier->event_mask() & Notifier::Exceptional)
-            ASSERT_NOT_REACHED();
-    }
-
-    bool queued_events_is_empty;
-    {
-        LOCKER(m_private->lock);
-        queued_events_is_empty = m_queued_events.is_empty();
-    }
-
-    timeval now;
-    struct timeval timeout = { 0, 0 };
-    bool should_wait_forever = false;
-    if (mode == WaitMode::WaitForEvents && queued_events_is_empty) {
-        auto next_timer_expiration = get_next_timer_expiration();
-        if (next_timer_expiration.has_value()) {
-            timespec now_spec;
-            clock_gettime(CLOCK_MONOTONIC_COARSE, &now_spec);
-            now.tv_sec = now_spec.tv_sec;
-            now.tv_usec = now_spec.tv_nsec / 1000;
-            timeval_sub(next_timer_expiration.value(), now, timeout);
-            if (timeout.tv_sec < 0 || (timeout.tv_sec == 0 && timeout.tv_usec < 0)) {
-                timeout.tv_sec = 0;
-                timeout.tv_usec = 0;
-            }
-        } else {
-            should_wait_forever = true;
-        }
-    }
-
-try_select_again:
-    int marked_fd_count = select(max_fd + 1, &rfds, &wfds, nullptr, should_wait_forever ? nullptr : &timeout);
-    if (marked_fd_count < 0) {
-        int saved_errno = errno;
-        if (saved_errno == EINTR) {
-            if (m_exit_requested)
-                return;
-            goto try_select_again;
-        }
-#ifdef EVENTLOOP_DEBUG
-        dbgln("Core::EventLoop::wait_for_event: {} ({}: {})", marked_fd_count, saved_errno, strerror(saved_errno));
-#endif
-        // Blow up, similar to Core::safe_syscall.
-        ASSERT_NOT_REACHED();
-    }
-    if (FD_ISSET(s_wake_pipe_fds[0], &rfds)) {
-        int wake_events[8];
-        auto nread = read(s_wake_pipe_fds[0], wake_events, sizeof(wake_events));
-        if (nread < 0) {
-            perror("read from wake pipe");
-            ASSERT_NOT_REACHED();
-        }
-        ASSERT(nread > 0);
-        bool wake_requested = false;
-        int event_count = nread / sizeof(wake_events[0]);
-        for (int i = 0; i < event_count; i++) {
-            if (wake_events[i] != 0)
-                dispatch_signal(wake_events[i]);
-            else
-                wake_requested = true;
-        }
-
-        if (!wake_requested && nread == sizeof(wake_events))
-            goto retry;
-    }
-
-    if (!s_timers->is_empty()) {
-        timespec now_spec;
-        clock_gettime(CLOCK_MONOTONIC_COARSE, &now_spec);
-        now.tv_sec = now_spec.tv_sec;
-        now.tv_usec = now_spec.tv_nsec / 1000;
-    }
-
-    for (auto& it : *s_timers) {
-        auto& timer = *it.value;
-        if (!timer.has_expired(now))
-            continue;
-        auto owner = timer.owner.strong_ref();
-        if (timer.fire_when_not_visible == TimerShouldFireWhenNotVisible::No
-            && owner && !owner->is_visible_for_timer_purposes()) {
-            continue;
-        }
-#ifdef EVENTLOOP_DEBUG
-        dbgln("Core::EventLoop: Timer {} has expired, sending Core::TimerEvent to {}", timer.timer_id, *owner);
-#endif
-        if (owner)
-            post_event(*owner, make<TimerEvent>(timer.timer_id));
-        if (timer.should_reload) {
-            timer.reload(now);
-        } else {
-            // FIXME: Support removing expired timers that don't want to reload.
-            ASSERT_NOT_REACHED();
-        }
-    }
-
-    if (!marked_fd_count)
-        return;
-
-    for (auto& notifier : *s_notifiers) {
-        if (FD_ISSET(notifier->fd(), &rfds)) {
-            if (notifier->event_mask() & Notifier::Event::Read)
-                post_event(*notifier, make<NotifierReadEvent>(notifier->fd()));
-        }
-        if (FD_ISSET(notifier->fd(), &wfds)) {
-            if (notifier->event_mask() & Notifier::Event::Write)
-                post_event(*notifier, make<NotifierWriteEvent>(notifier->fd()));
-        }
-    }
-}
-
-bool EventLoopTimer::has_expired(const timeval& now) const
-{
-    return now.tv_sec > fire_time.tv_sec || (now.tv_sec == fire_time.tv_sec && now.tv_usec >= fire_time.tv_usec);
-}
-
-void EventLoopTimer::reload(const timeval& now)
-{
-    fire_time = now;
-    fire_time.tv_sec += interval / 1000;
-    fire_time.tv_usec += (interval % 1000) * 1000;
-}
-
-Optional<struct timeval> EventLoop::get_next_timer_expiration()
-{
-    Optional<struct timeval> soonest {};
-    for (auto& it : *s_timers) {
-        auto& fire_time = it.value->fire_time;
-        auto owner = it.value->owner.strong_ref();
-        if (it.value->fire_when_not_visible == TimerShouldFireWhenNotVisible::No
-            && owner && !owner->is_visible_for_timer_purposes()) {
-            continue;
-        }
-        if (!soonest.has_value() || fire_time.tv_sec < soonest.value().tv_sec || (fire_time.tv_sec == soonest.value().tv_sec && fire_time.tv_usec < soonest.value().tv_usec))
-            soonest = fire_time;
-    }
-    return soonest;
-}
-
-int EventLoop::register_timer(Object& object, int milliseconds, bool should_reload, TimerShouldFireWhenNotVisible fire_when_not_visible)
-{
-    ASSERT(milliseconds >= 0);
-    auto timer = make<EventLoopTimer>();
-    timer->owner = object;
-    timer->interval = milliseconds;
-    timeval now;
-    timespec now_spec;
-    clock_gettime(CLOCK_MONOTONIC_COARSE, &now_spec);
-    now.tv_sec = now_spec.tv_sec;
-    now.tv_usec = now_spec.tv_nsec / 1000;
-    timer->reload(now);
-    timer->should_reload = should_reload;
-    timer->fire_when_not_visible = fire_when_not_visible;
-    int timer_id = s_id_allocator->allocate();
-    timer->timer_id = timer_id;
-    s_timers->set(timer_id, move(timer));
-    return timer_id;
-}
-
-bool EventLoop::unregister_timer(int timer_id)
-{
-    s_id_allocator->deallocate(timer_id);
-    auto it = s_timers->find(timer_id);
-    if (it == s_timers->end())
-        return false;
-    s_timers->remove(it);
-    return true;
-}
-
-void EventLoop::register_notifier(Badge<Notifier>, Notifier& notifier)
-{
-    s_notifiers->set(&notifier);
-}
-
-void EventLoop::unregister_notifier(Badge<Notifier>, Notifier& notifier)
-{
-    s_notifiers->remove(&notifier);
-}
-
-void EventLoop::wake()
-{
-    int wake_event = 0;
-    int nwritten = write(s_wake_pipe_fds[1], &wake_event, sizeof(wake_event));
-    if (nwritten < 0) {
-        perror("EventLoop::wake: write");
-        ASSERT_NOT_REACHED();
-    }
-}
-
-EventLoop::QueuedEvent::QueuedEvent(Object& receiver, NonnullOwnPtr<Event> event)
-    : receiver(receiver)
-    , event(move(event))
-{
-}
-
-EventLoop::QueuedEvent::QueuedEvent(QueuedEvent&& other)
-    : receiver(other.receiver)
-    , event(move(other.event))
-{
-}
-
-EventLoop::QueuedEvent::~QueuedEvent()
-{
-}
-
-}
diff --git a/Libraries/LibCore/EventLoop.h b/Libraries/LibCore/EventLoop.h
deleted file mode 100644
index d299b93407..0000000000
--- a/Libraries/LibCore/EventLoop.h
+++ /dev/null
@@ -1,122 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Forward.h>
-#include <AK/Function.h>
-#include <AK/HashMap.h>
-#include <AK/Noncopyable.h>
-#include <AK/NonnullOwnPtr.h>
-#include <AK/Vector.h>
-#include <AK/WeakPtr.h>
-#include <LibCore/Forward.h>
-#include <sys/time.h>
-#include <sys/types.h>
-
-namespace Core {
-
-class EventLoop {
-public:
-    EventLoop();
-    ~EventLoop();
-
-    int exec();
-
-    enum class WaitMode {
-        WaitForEvents,
-        PollForEvents,
-    };
-
-    // processe events, generally called by exec() in a loop.
-    // this should really only be used for integrating with other event loops
-    void pump(WaitMode = WaitMode::WaitForEvents);
-
-    void post_event(Object& receiver, NonnullOwnPtr<Event>&&);
-
-    static EventLoop& main();
-    static EventLoop& current();
-
-    bool was_exit_requested() const { return m_exit_requested; }
-
-    static int register_timer(Object&, int milliseconds, bool should_reload, TimerShouldFireWhenNotVisible);
-    static bool unregister_timer(int timer_id);
-
-    static void register_notifier(Badge<Notifier>, Notifier&);
-    static void unregister_notifier(Badge<Notifier>, Notifier&);
-
-    void quit(int);
-    void unquit();
-
-    void take_pending_events_from(EventLoop& other)
-    {
-        m_queued_events.append(move(other.m_queued_events));
-    }
-
-    static void wake();
-
-    static int register_signal(int signo, Function<void(int)> handler);
-    static void unregister_signal(int handler_id);
-
-    // Note: Boost uses Parent/Child/Prepare, but we don't really have anything
-    //       interesting to do in the parent or before forking.
-    enum class ForkEvent {
-        Child,
-    };
-    static void notify_forked(ForkEvent);
-
-private:
-    bool start_rpc_server();
-    void wait_for_event(WaitMode);
-    Optional<struct timeval> get_next_timer_expiration();
-    static void dispatch_signal(int);
-    static void handle_signal(int);
-
-    struct QueuedEvent {
-        AK_MAKE_NONCOPYABLE(QueuedEvent);
-
-    public:
-        QueuedEvent(Object& receiver, NonnullOwnPtr<Event>);
-        QueuedEvent(QueuedEvent&&);
-        ~QueuedEvent();
-
-        WeakPtr<Object> receiver;
-        NonnullOwnPtr<Event> event;
-    };
-
-    Vector<QueuedEvent, 64> m_queued_events;
-    static pid_t s_pid;
-
-    bool m_exit_requested { false };
-    int m_exit_code { 0 };
-
-    static int s_wake_pipe_fds[2];
-
-    struct Private;
-    NonnullOwnPtr<Private> m_private;
-};
-
-}
diff --git a/Libraries/LibCore/File.cpp b/Libraries/LibCore/File.cpp
deleted file mode 100644
index 07192a9b18..0000000000
--- a/Libraries/LibCore/File.cpp
+++ /dev/null
@@ -1,270 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifdef __serenity__
-#    include <Kernel/API/Syscall.h>
-#endif
-#include <AK/ScopeGuard.h>
-#include <LibCore/File.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <libgen.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
-namespace Core {
-
-Result<NonnullRefPtr<File>, String> File::open(const String& filename, IODevice::OpenMode mode, mode_t permissions)
-{
-    auto file = File::construct(filename);
-    if (!file->open_impl(mode, permissions))
-        return String(file->error_string());
-    return file;
-}
-
-File::File(const StringView& filename, Object* parent)
-    : IODevice(parent)
-    , m_filename(filename)
-{
-}
-
-File::~File()
-{
-    if (m_should_close_file_descriptor == ShouldCloseFileDescriptor::Yes && mode() != NotOpen)
-        close();
-}
-
-bool File::open(int fd, IODevice::OpenMode mode, ShouldCloseFileDescriptor should_close)
-{
-    set_fd(fd);
-    set_mode(mode);
-    m_should_close_file_descriptor = should_close;
-    return true;
-}
-
-bool File::open(IODevice::OpenMode mode)
-{
-    return open_impl(mode, 0666);
-}
-
-bool File::open_impl(IODevice::OpenMode mode, mode_t permissions)
-{
-    ASSERT(!m_filename.is_null());
-    int flags = 0;
-    if ((mode & IODevice::ReadWrite) == IODevice::ReadWrite) {
-        flags |= O_RDWR | O_CREAT;
-    } else if (mode & IODevice::ReadOnly) {
-        flags |= O_RDONLY;
-    } else if (mode & IODevice::WriteOnly) {
-        flags |= O_WRONLY | O_CREAT;
-        bool should_truncate = !((mode & IODevice::Append) || (mode & IODevice::MustBeNew));
-        if (should_truncate)
-            flags |= O_TRUNC;
-    }
-    if (mode & IODevice::Append)
-        flags |= O_APPEND;
-    if (mode & IODevice::Truncate)
-        flags |= O_TRUNC;
-    if (mode & IODevice::MustBeNew)
-        flags |= O_EXCL;
-    int fd = ::open(m_filename.characters(), flags, permissions);
-    if (fd < 0) {
-        set_error(errno);
-        return false;
-    }
-
-    set_fd(fd);
-    set_mode(mode);
-    return true;
-}
-
-bool File::is_directory() const
-{
-    struct stat stat;
-    if (fstat(fd(), &stat) < 0)
-        return false;
-    return S_ISDIR(stat.st_mode);
-}
-
-bool File::is_directory(const String& filename)
-{
-    struct stat st;
-    if (stat(filename.characters(), &st) < 0)
-        return false;
-    return S_ISDIR(st.st_mode);
-}
-
-bool File::exists(const String& filename)
-{
-    struct stat st;
-    return stat(filename.characters(), &st) == 0;
-}
-
-String File::real_path_for(const String& filename)
-{
-    if (filename.is_null())
-        return {};
-    auto* path = realpath(filename.characters(), nullptr);
-    String real_path(path);
-    free(path);
-    return real_path;
-}
-
-bool File::ensure_parent_directories(const String& path)
-{
-    ASSERT(path.starts_with("/"));
-
-    int saved_errno = 0;
-    ScopeGuard restore_errno = [&saved_errno] { errno = saved_errno; };
-
-    char* parent_buffer = strdup(path.characters());
-    ScopeGuard free_buffer = [parent_buffer] { free(parent_buffer); };
-
-    const char* parent = dirname(parent_buffer);
-
-    int rc = mkdir(parent, 0755);
-    saved_errno = errno;
-
-    if (rc == 0 || errno == EEXIST)
-        return true;
-
-    if (errno != ENOENT)
-        return false;
-
-    bool ok = ensure_parent_directories(parent);
-    saved_errno = errno;
-    if (!ok)
-        return false;
-
-    rc = mkdir(parent, 0755);
-    saved_errno = errno;
-    return rc == 0;
-}
-
-#ifdef __serenity__
-
-String File::read_link(const StringView& link_path)
-{
-    // First, try using a 64-byte buffer, that ought to be enough for anybody.
-    char small_buffer[64];
-    Syscall::SC_readlink_params small_params {
-        { link_path.characters_without_null_termination(), link_path.length() },
-        { small_buffer, sizeof(small_buffer) }
-    };
-    int rc = syscall(SC_readlink, &small_params);
-    if (rc < 0) {
-        errno = -rc;
-        return {};
-    }
-    size_t size = rc;
-    // If the call was successful, the syscall (unlike the LibC wrapper)
-    // returns the full size of the link. Let's see if our small buffer
-    // was enough to read the whole link.
-    if (size <= sizeof(small_buffer))
-        return { small_buffer, size };
-    // Nope, but at least now we know the right size.
-    char* large_buffer_ptr;
-    auto large_buffer = StringImpl::create_uninitialized(size, large_buffer_ptr);
-    Syscall::SC_readlink_params large_params {
-        { link_path.characters_without_null_termination(), link_path.length() },
-        { large_buffer_ptr, (size_t)size }
-    };
-    rc = syscall(SC_readlink, &large_params);
-    if (rc < 0) {
-        errno = -rc;
-        return {};
-    }
-    size_t new_size = rc;
-    if (new_size == size)
-        return { *large_buffer };
-
-    // If we're here, the symlink has changed while we were looking at it.
-    // If it became shorter, our buffer is valid, we just have to trim it a bit.
-    if (new_size < size)
-        return { large_buffer_ptr, new_size };
-    // Otherwise, here's not much we can do, unless we want to loop endlessly
-    // in this case. Let's leave it up to the caller whether to loop.
-    errno = -EAGAIN;
-    return {};
-}
-
-#else
-
-// This is a sad version for other systems. It has to always make a copy of the
-// link path, and to always make two syscalls to get the right size first.
-String File::read_link(const StringView& link_path)
-{
-    String link_path_str = link_path;
-    struct stat statbuf;
-    int rc = lstat(link_path_str.characters(), &statbuf);
-    if (rc < 0)
-        return {};
-    char* buffer_ptr;
-    auto buffer = StringImpl::create_uninitialized(statbuf.st_size, buffer_ptr);
-    rc = readlink(link_path_str.characters(), buffer_ptr, statbuf.st_size);
-    if (rc < 0)
-        return {};
-    // (See above.)
-    if (rc == statbuf.st_size)
-        return { *buffer };
-    return { buffer_ptr, (size_t)rc };
-}
-
-#endif
-
-static RefPtr<File> stdin_file;
-static RefPtr<File> stdout_file;
-static RefPtr<File> stderr_file;
-
-NonnullRefPtr<File> File::standard_input()
-{
-    if (!stdin_file) {
-        stdin_file = File::construct();
-        stdin_file->open(STDIN_FILENO, IODevice::ReadOnly, ShouldCloseFileDescriptor::No);
-    }
-    return *stdin_file;
-}
-
-NonnullRefPtr<File> File::standard_output()
-{
-    if (!stdout_file) {
-        stdout_file = File::construct();
-        stdout_file->open(STDOUT_FILENO, IODevice::WriteOnly, ShouldCloseFileDescriptor::No);
-    }
-    return *stdout_file;
-}
-
-NonnullRefPtr<File> File::standard_error()
-{
-    if (!stderr_file) {
-        stderr_file = File::construct();
-        stderr_file->open(STDERR_FILENO, IODevice::WriteOnly, ShouldCloseFileDescriptor::No);
-    }
-    return *stderr_file;
-}
-}
diff --git a/Libraries/LibCore/File.h b/Libraries/LibCore/File.h
deleted file mode 100644
index 040a2813b7..0000000000
--- a/Libraries/LibCore/File.h
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Result.h>
-#include <AK/String.h>
-#include <LibCore/IODevice.h>
-
-namespace Core {
-
-class File final : public IODevice {
-    C_OBJECT(File)
-public:
-    virtual ~File() override;
-
-    static Result<NonnullRefPtr<File>, String> open(const String& filename, IODevice::OpenMode, mode_t = 0644);
-
-    String filename() const { return m_filename; }
-    void set_filename(const StringView& filename) { m_filename = filename; }
-
-    bool is_directory() const;
-    static bool is_directory(const String& filename);
-
-    static bool exists(const String& filename);
-    static String real_path_for(const String& filename);
-    static String read_link(const StringView& link_path);
-    static bool ensure_parent_directories(const String& path);
-
-    virtual bool open(IODevice::OpenMode) override;
-
-    enum class ShouldCloseFileDescriptor {
-        No = 0,
-        Yes
-    };
-    bool open(int fd, IODevice::OpenMode, ShouldCloseFileDescriptor);
-
-    static NonnullRefPtr<File> standard_input();
-    static NonnullRefPtr<File> standard_output();
-    static NonnullRefPtr<File> standard_error();
-
-private:
-    File(Object* parent = nullptr)
-        : IODevice(parent)
-    {
-    }
-    explicit File(const StringView&, Object* parent = nullptr);
-
-    bool open_impl(IODevice::OpenMode, mode_t);
-
-    String m_filename;
-    ShouldCloseFileDescriptor m_should_close_file_descriptor { ShouldCloseFileDescriptor::Yes };
-};
-
-}
diff --git a/Libraries/LibCore/FileStream.h b/Libraries/LibCore/FileStream.h
deleted file mode 100644
index 0c8774d28a..0000000000
--- a/Libraries/LibCore/FileStream.h
+++ /dev/null
@@ -1,171 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Buffered.h>
-#include <AK/ByteBuffer.h>
-#include <AK/Stream.h>
-#include <LibCore/File.h>
-
-namespace Core {
-
-class InputFileStream final : public InputStream {
-public:
-    explicit InputFileStream(NonnullRefPtr<File> file)
-        : m_file(file)
-    {
-    }
-
-    static Result<InputFileStream, String> open(StringView filename, IODevice::OpenMode mode = IODevice::OpenMode::ReadOnly, mode_t permissions = 0644)
-    {
-        ASSERT((mode & 0xf) == IODevice::OpenMode::ReadOnly || (mode & 0xf) == IODevice::OpenMode::ReadWrite);
-
-        auto file_result = File::open(filename, mode, permissions);
-
-        if (file_result.is_error())
-            return file_result.error();
-
-        return InputFileStream { file_result.value() };
-    }
-
-    static Result<Buffered<InputFileStream>, String> open_buffered(StringView filename, IODevice::OpenMode mode = IODevice::OpenMode::ReadOnly, mode_t permissions = 0644)
-    {
-        ASSERT((mode & 0xf) == IODevice::OpenMode::ReadOnly || (mode & 0xf) == IODevice::OpenMode::ReadWrite);
-
-        auto file_result = File::open(filename, mode, permissions);
-
-        if (file_result.is_error())
-            return file_result.error();
-
-        return Buffered<InputFileStream> { file_result.value() };
-    }
-
-    size_t read(Bytes bytes) override
-    {
-        if (has_any_error())
-            return 0;
-
-        const auto buffer = m_file->read(bytes.size());
-        return buffer.bytes().copy_to(bytes);
-    }
-
-    bool read_or_error(Bytes bytes) override
-    {
-        if (read(bytes) < bytes.size()) {
-            set_fatal_error();
-            return false;
-        }
-
-        return true;
-    }
-
-    bool discard_or_error(size_t count) override { return m_file->seek(count, IODevice::SeekMode::FromCurrentPosition); }
-
-    bool unreliable_eof() const override { return m_file->eof(); }
-
-    void close()
-    {
-        if (!m_file->close())
-            set_fatal_error();
-    }
-
-private:
-    NonnullRefPtr<File> m_file;
-};
-
-class OutputFileStream : public OutputStream {
-public:
-    explicit OutputFileStream(NonnullRefPtr<File> file)
-        : m_file(file)
-    {
-    }
-
-    static Result<OutputFileStream, String> open(StringView filename, IODevice::OpenMode mode = IODevice::OpenMode::WriteOnly, mode_t permissions = 0644)
-    {
-        ASSERT((mode & 0xf) == IODevice::OpenMode::WriteOnly || (mode & 0xf) == IODevice::OpenMode::ReadWrite);
-
-        auto file_result = File::open(filename, mode, permissions);
-
-        if (file_result.is_error())
-            return file_result.error();
-
-        return OutputFileStream { file_result.value() };
-    }
-
-    static Result<Buffered<OutputFileStream>, String> open_buffered(StringView filename, IODevice::OpenMode mode = IODevice::OpenMode::WriteOnly, mode_t permissions = 0644)
-    {
-        ASSERT((mode & 0xf) == IODevice::OpenMode::WriteOnly || (mode & 0xf) == IODevice::OpenMode::ReadWrite);
-
-        auto file_result = File::open(filename, mode, permissions);
-
-        if (file_result.is_error())
-            return file_result.error();
-
-        return Buffered<OutputFileStream> { file_result.value() };
-    }
-
-    static OutputFileStream standard_output()
-    {
-        return OutputFileStream { Core::File::standard_output() };
-    }
-
-    static Buffered<OutputFileStream> stdout_buffered()
-    {
-        return Buffered<OutputFileStream> { Core::File::standard_output() };
-    }
-
-    size_t write(ReadonlyBytes bytes) override
-    {
-        if (!m_file->write(bytes.data(), bytes.size())) {
-            set_fatal_error();
-            return 0;
-        }
-
-        return bytes.size();
-    }
-
-    bool write_or_error(ReadonlyBytes bytes) override
-    {
-        if (write(bytes) < bytes.size()) {
-            set_fatal_error();
-            return false;
-        }
-
-        return true;
-    }
-
-    void close()
-    {
-        if (!m_file->close())
-            set_fatal_error();
-    }
-
-private:
-    NonnullRefPtr<File> m_file;
-};
-
-}
diff --git a/Libraries/LibCore/Forward.h b/Libraries/LibCore/Forward.h
deleted file mode 100644
index 09497cb0bf..0000000000
--- a/Libraries/LibCore/Forward.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-namespace Core {
-
-class ArgsParser;
-class ChildEvent;
-class ConfigFile;
-class CustomEvent;
-class DateTime;
-class DirIterator;
-class ElapsedTimer;
-class Event;
-class EventLoop;
-class File;
-class IODevice;
-class LocalServer;
-class LocalSocket;
-class MimeData;
-class NetworkJob;
-class NetworkResponse;
-class Notifier;
-class Object;
-class ProcessStatisticsReader;
-class Socket;
-class SocketAddress;
-class TCPServer;
-class TCPSocket;
-class Timer;
-class TimerEvent;
-class UDPServer;
-class UDPSocket;
-
-enum class TimerShouldFireWhenNotVisible;
-
-}
diff --git a/Libraries/LibCore/GetPassword.cpp b/Libraries/LibCore/GetPassword.cpp
deleted file mode 100644
index dfcff21583..0000000000
--- a/Libraries/LibCore/GetPassword.cpp
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * Copyright (c) 2020, Peter Elliott <pelliott@ualberta.ca>
- * Copyright (c) 2021, Emanuele Torre <torreemanuele6@gmail.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <LibCore/GetPassword.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <termios.h>
-
-namespace Core {
-
-Result<String, OSError> get_password(const StringView& prompt)
-{
-    if (write(STDOUT_FILENO, prompt.characters_without_null_termination(), prompt.length()) < 0)
-        return OSError(errno);
-
-    termios original {};
-    if (tcgetattr(STDIN_FILENO, &original) < 0)
-        return OSError(errno);
-
-    termios no_echo = original;
-    no_echo.c_lflag &= ~ECHO;
-    if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &no_echo) < 0)
-        return OSError(errno);
-
-    char* password = nullptr;
-    size_t n = 0;
-
-    auto line_length = getline(&password, &n, stdin);
-    auto saved_errno = errno;
-
-    tcsetattr(STDIN_FILENO, TCSAFLUSH, &original);
-    putchar('\n');
-
-    if (line_length < 0)
-        return OSError(saved_errno);
-
-    ASSERT(line_length != 0);
-
-    // Remove trailing '\n' read by getline().
-    password[line_length - 1] = '\0';
-
-    String s(password);
-    free(password);
-    return s;
-}
-}
diff --git a/Libraries/LibCore/GetPassword.h b/Libraries/LibCore/GetPassword.h
deleted file mode 100644
index c62a071935..0000000000
--- a/Libraries/LibCore/GetPassword.h
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright (c) 2020, Peter Elliott <pelliott@ualberta.ca>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/OSError.h>
-#include <AK/Result.h>
-#include <AK/String.h>
-
-namespace Core {
-
-Result<String, OSError> get_password(const StringView& prompt = "Password: ");
-
-}
diff --git a/Libraries/LibCore/Gzip.cpp b/Libraries/LibCore/Gzip.cpp
deleted file mode 100644
index 49cf14c3a0..0000000000
--- a/Libraries/LibCore/Gzip.cpp
+++ /dev/null
@@ -1,165 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/ByteBuffer.h>
-#include <AK/Optional.h>
-#include <LibCore/Gzip.h>
-#include <LibCore/puff.h>
-#include <limits.h>
-#include <stddef.h>
-
-//#define DEBUG_GZIP
-
-namespace Core {
-
-bool Gzip::is_compressed(const ByteBuffer& data)
-{
-    return data.size() > 2 && data[0] == 0x1F && data[1] == 0x8b;
-}
-
-// skips the gzip header
-// see: https://tools.ietf.org/html/rfc1952#page-5
-static Optional<ByteBuffer> get_gzip_payload(const ByteBuffer& data)
-{
-    size_t current = 0;
-    auto read_byte = [&]() {
-        if (current >= data.size()) {
-            ASSERT_NOT_REACHED();
-            return (u8)0;
-        }
-        return data[current++];
-    };
-
-#ifdef DEBUG_GZIP
-    dbgln("get_gzip_payload: Skipping over gzip header.");
-#endif
-
-    // Magic Header
-    if (read_byte() != 0x1F || read_byte() != 0x8B) {
-        dbgln("get_gzip_payload: Wrong magic number.");
-        return Optional<ByteBuffer>();
-    }
-
-    // Compression method
-    auto method = read_byte();
-    if (method != 8) {
-        dbgln("get_gzip_payload: Wrong compression method={}", method);
-        return Optional<ByteBuffer>();
-    }
-
-    u8 flags = read_byte();
-
-    // Timestamp, Extra flags, OS
-    current += 6;
-
-    // FEXTRA
-    if (flags & 4) {
-        u16 length = read_byte() & read_byte() << 8;
-        dbgln("get_gzip_payload: Header has FEXTRA flag set. length={}", length);
-        current += length;
-    }
-
-    // FNAME
-    if (flags & 8) {
-        dbgln("get_gzip_payload: Header has FNAME flag set.");
-        while (read_byte() != '\0')
-            ;
-    }
-
-    // FCOMMENT
-    if (flags & 16) {
-        dbgln("get_gzip_payload: Header has FCOMMENT flag set.");
-        while (read_byte() != '\0')
-            ;
-    }
-
-    // FHCRC
-    if (flags & 2) {
-        dbgln("get_gzip_payload: Header has FHCRC flag set.");
-        current += 2;
-    }
-
-    auto new_size = data.size() - current;
-#ifdef DEBUG_GZIP
-    dbg() << "get_gzip_payload: Returning slice from " << current << " with size " << new_size;
-#endif
-    return data.slice(current, new_size);
-}
-
-Optional<ByteBuffer> Gzip::decompress(const ByteBuffer& data)
-{
-    ASSERT(is_compressed(data));
-
-#ifdef DEBUG_GZIP
-    dbg() << "Gzip::decompress: Decompressing gzip compressed data. Size = " << data.size();
-#endif
-    auto optional_payload = get_gzip_payload(data);
-    if (!optional_payload.has_value()) {
-        return Optional<ByteBuffer>();
-    }
-
-    auto source = optional_payload.value();
-    unsigned long source_len = source.size();
-    auto destination = ByteBuffer::create_uninitialized(1024);
-    while (true) {
-        unsigned long destination_len = destination.size();
-
-#ifdef DEBUG_GZIP
-        dbg() << "Gzip::decompress: Calling puff()\n"
-              << "  destination_data = " << destination.data() << "\n"
-              << "  destination_len = " << destination_len << "\n"
-              << "  source_data = " << source.data() << "\n"
-              << "  source_len = " << source_len;
-#endif
-
-        auto puff_ret = puff(
-            destination.data(), &destination_len,
-            source.data(), &source_len);
-
-        if (puff_ret == 0) {
-#ifdef DEBUG_GZIP
-            dbgln("Gzip::decompress: Decompression success.");
-#endif
-            destination.trim(destination_len);
-            break;
-        }
-
-        if (puff_ret == 1) {
-            // FIXME: Find a better way of decompressing without needing to try over and over again.
-#ifdef DEBUG_GZIP
-            dbgln("Gzip::decompress: Output buffer exhausted. Growing.");
-#endif
-            destination.grow(destination.size() * 2);
-        } else {
-            dbgln("Gzip::decompress: Error. puff() returned: {}", puff_ret);
-            ASSERT_NOT_REACHED();
-        }
-    }
-
-    return destination;
-}
-
-}
diff --git a/Libraries/LibCore/Gzip.h b/Libraries/LibCore/Gzip.h
deleted file mode 100644
index a96af59536..0000000000
--- a/Libraries/LibCore/Gzip.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/ByteBuffer.h>
-#include <AK/Optional.h>
-#include <AK/String.h>
-
-namespace Core {
-
-class Gzip {
-public:
-    static bool is_compressed(const ByteBuffer& data);
-    static Optional<ByteBuffer> decompress(const ByteBuffer& data);
-};
-
-}
diff --git a/Libraries/LibCore/IODevice.cpp b/Libraries/LibCore/IODevice.cpp
deleted file mode 100644
index 453526e408..0000000000
--- a/Libraries/LibCore/IODevice.cpp
+++ /dev/null
@@ -1,336 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/ByteBuffer.h>
-#include <AK/PrintfImplementation.h>
-#include <LibCore/IODevice.h>
-#include <LibCore/SyscallUtils.h>
-#include <errno.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/select.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <unistd.h>
-
-namespace Core {
-
-IODevice::IODevice(Object* parent)
-    : Object(parent)
-{
-}
-
-IODevice::~IODevice()
-{
-}
-
-const char* IODevice::error_string() const
-{
-    return strerror(m_error);
-}
-
-int IODevice::read(u8* buffer, int length)
-{
-    auto read_buffer = read(length);
-    if (read_buffer.is_null())
-        return 0;
-    memcpy(buffer, read_buffer.data(), length);
-    return read_buffer.size();
-}
-
-ByteBuffer IODevice::read(size_t max_size)
-{
-    if (m_fd < 0)
-        return {};
-    if (!max_size)
-        return {};
-    auto buffer = ByteBuffer::create_uninitialized(max_size);
-    auto* buffer_ptr = (char*)buffer.data();
-    size_t remaining_buffer_space = buffer.size();
-    size_t taken_from_buffered = 0;
-    if (!m_buffered_data.is_empty()) {
-        taken_from_buffered = min(remaining_buffer_space, m_buffered_data.size());
-        memcpy(buffer_ptr, m_buffered_data.data(), taken_from_buffered);
-        Vector<u8> new_buffered_data;
-        new_buffered_data.append(m_buffered_data.data() + taken_from_buffered, m_buffered_data.size() - taken_from_buffered);
-        m_buffered_data = move(new_buffered_data);
-        remaining_buffer_space -= taken_from_buffered;
-        buffer_ptr += taken_from_buffered;
-    }
-    if (!remaining_buffer_space)
-        return buffer;
-    int nread = ::read(m_fd, buffer_ptr, remaining_buffer_space);
-    if (nread < 0) {
-        if (taken_from_buffered) {
-            buffer.trim(taken_from_buffered);
-            return buffer;
-        }
-        set_error(errno);
-        return {};
-    }
-    if (nread == 0) {
-        set_eof(true);
-        if (taken_from_buffered) {
-            buffer.trim(taken_from_buffered);
-            return buffer;
-        }
-        return {};
-    }
-    buffer.trim(taken_from_buffered + nread);
-    return buffer;
-}
-
-bool IODevice::can_read_from_fd() const
-{
-    // FIXME: Can we somehow remove this once Core::Socket is implemented using non-blocking sockets?
-    fd_set rfds;
-    FD_ZERO(&rfds);
-    FD_SET(m_fd, &rfds);
-    struct timeval timeout {
-        0, 0
-    };
-    int rc = Core::safe_syscall(select, m_fd + 1, &rfds, nullptr, nullptr, &timeout);
-    if (rc < 0) {
-        // NOTE: We don't set m_error here.
-        perror("IODevice::can_read: select");
-        return false;
-    }
-    return FD_ISSET(m_fd, &rfds);
-}
-
-bool IODevice::can_read_line() const
-{
-    if (m_eof && !m_buffered_data.is_empty())
-        return true;
-    if (m_buffered_data.contains_slow('\n'))
-        return true;
-    if (!can_read_from_fd())
-        return false;
-    populate_read_buffer();
-    if (m_eof && !m_buffered_data.is_empty())
-        return true;
-    return m_buffered_data.contains_slow('\n');
-}
-
-bool IODevice::can_read() const
-{
-    return !m_buffered_data.is_empty() || can_read_from_fd();
-}
-
-ByteBuffer IODevice::read_all()
-{
-    off_t file_size = 0;
-    struct stat st;
-    int rc = fstat(fd(), &st);
-    if (rc == 0)
-        file_size = st.st_size;
-
-    Vector<u8> data;
-    data.ensure_capacity(file_size);
-
-    if (!m_buffered_data.is_empty()) {
-        data.append(m_buffered_data.data(), m_buffered_data.size());
-        m_buffered_data.clear();
-    }
-
-    while (true) {
-        char read_buffer[4096];
-        int nread = ::read(m_fd, read_buffer, sizeof(read_buffer));
-        if (nread < 0) {
-            set_error(errno);
-            break;
-        }
-        if (nread == 0) {
-            set_eof(true);
-            break;
-        }
-        data.append((const u8*)read_buffer, nread);
-    }
-    if (data.is_empty())
-        return {};
-    return ByteBuffer::copy(data.data(), data.size());
-}
-
-String IODevice::read_line(size_t max_size)
-{
-    if (m_fd < 0)
-        return {};
-    if (!max_size)
-        return {};
-    if (!can_read_line())
-        return {};
-    if (m_eof) {
-        if (m_buffered_data.size() > max_size) {
-            dbgprintf("IODevice::read_line: At EOF but there's more than max_size(%zu) buffered\n", max_size);
-            return {};
-        }
-        auto line = String((const char*)m_buffered_data.data(), m_buffered_data.size(), Chomp);
-        m_buffered_data.clear();
-        return line;
-    }
-    auto line = ByteBuffer::create_uninitialized(max_size + 1);
-    size_t line_index = 0;
-    while (line_index < max_size) {
-        u8 ch = m_buffered_data[line_index];
-        line[line_index++] = ch;
-        if (ch == '\n') {
-            Vector<u8> new_buffered_data;
-            new_buffered_data.append(m_buffered_data.data() + line_index, m_buffered_data.size() - line_index);
-            m_buffered_data = move(new_buffered_data);
-            line.trim(line_index);
-            return String::copy(line, Chomp);
-        }
-    }
-    return {};
-}
-
-bool IODevice::populate_read_buffer() const
-{
-    if (m_fd < 0)
-        return false;
-    u8 buffer[1024];
-    int nread = ::read(m_fd, buffer, sizeof(buffer));
-    if (nread < 0) {
-        set_error(errno);
-        return false;
-    }
-    if (nread == 0) {
-        set_eof(true);
-        return false;
-    }
-    m_buffered_data.append(buffer, nread);
-    return true;
-}
-
-bool IODevice::close()
-{
-    if (fd() < 0 || mode() == NotOpen)
-        return false;
-    int rc = ::close(fd());
-    if (rc < 0) {
-        set_error(errno);
-        return false;
-    }
-    set_fd(-1);
-    set_mode(IODevice::NotOpen);
-    return true;
-}
-
-bool IODevice::seek(i64 offset, SeekMode mode, off_t* pos)
-{
-    int m = SEEK_SET;
-    switch (mode) {
-    case SeekMode::SetPosition:
-        m = SEEK_SET;
-        break;
-    case SeekMode::FromCurrentPosition:
-        m = SEEK_CUR;
-        break;
-    case SeekMode::FromEndPosition:
-        m = SEEK_END;
-        break;
-    }
-    off_t rc = lseek(m_fd, offset, m);
-    if (rc < 0) {
-        set_error(errno);
-        if (pos)
-            *pos = -1;
-        return false;
-    }
-    m_buffered_data.clear();
-    m_eof = false;
-    if (pos)
-        *pos = rc;
-    return true;
-}
-
-bool IODevice::truncate(off_t size)
-{
-    int rc = ftruncate(m_fd, size);
-    if (rc < 0) {
-        set_error(errno);
-        return false;
-    }
-    return true;
-}
-
-bool IODevice::write(const u8* data, int size)
-{
-    int rc = ::write(m_fd, data, size);
-    if (rc < 0) {
-        perror("IODevice::write: write");
-        set_error(errno);
-        return false;
-    }
-    return rc == size;
-}
-
-int IODevice::printf(const char* format, ...)
-{
-    va_list ap;
-    va_start(ap, format);
-    // FIXME: We're not propagating write() failures to client here!
-    int ret = printf_internal([this](char*&, char ch) {
-        write((const u8*)&ch, 1);
-    },
-        nullptr, format, ap);
-    va_end(ap);
-    return ret;
-}
-
-void IODevice::set_fd(int fd)
-{
-    if (m_fd == fd)
-        return;
-
-    m_fd = fd;
-    did_update_fd(fd);
-}
-
-bool IODevice::write(const StringView& v)
-{
-    return write((const u8*)v.characters_without_null_termination(), v.length());
-}
-
-LineIterator::LineIterator(IODevice& device, bool is_end)
-    : m_device(device)
-    , m_is_end(is_end)
-{
-    ++*this;
-}
-
-bool LineIterator::at_end() const
-{
-    return m_device->eof();
-}
-
-LineIterator& LineIterator::operator++()
-{
-    m_buffer = m_device->read_line();
-    return *this;
-}
-
-}
diff --git a/Libraries/LibCore/IODevice.h b/Libraries/LibCore/IODevice.h
deleted file mode 100644
index 70a75532a1..0000000000
--- a/Libraries/LibCore/IODevice.h
+++ /dev/null
@@ -1,133 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Forward.h>
-#include <LibCore/Object.h>
-
-namespace Core {
-
-// This is not necessarily a valid iterator in all contexts,
-// if we had concepts, this would be InputIterator, not Copyable, Movable.
-class LineIterator {
-    AK_MAKE_NONCOPYABLE(LineIterator);
-
-public:
-    explicit LineIterator(IODevice&, bool is_end = false);
-
-    bool operator==(const LineIterator& other) const { return &other == this || (at_end() && other.is_end()) || (other.at_end() && is_end()); }
-    bool is_end() const { return m_is_end; }
-    bool at_end() const;
-
-    LineIterator& operator++();
-
-    StringView operator*() const { return m_buffer; }
-
-private:
-    NonnullRefPtr<IODevice> m_device;
-    bool m_is_end { false };
-    String m_buffer;
-};
-
-class IODevice : public Object {
-    C_OBJECT_ABSTRACT(IODevice)
-public:
-    enum OpenMode {
-        NotOpen = 0,
-        ReadOnly = 1,
-        WriteOnly = 2,
-        ReadWrite = 3,
-        Append = 4,
-        Truncate = 8,
-        MustBeNew = 16,
-    };
-
-    virtual ~IODevice() override;
-
-    int fd() const { return m_fd; }
-    unsigned mode() const { return m_mode; }
-    bool is_open() const { return m_mode != NotOpen; }
-    bool eof() const { return m_eof; }
-
-    int error() const { return m_error; }
-    const char* error_string() const;
-
-    bool has_error() const { return m_error != 0; }
-
-    int read(u8* buffer, int length);
-
-    ByteBuffer read(size_t max_size);
-    ByteBuffer read_all();
-    String read_line(size_t max_size = 16384);
-
-    bool write(const u8*, int size);
-    bool write(const StringView&);
-
-    bool truncate(off_t);
-
-    bool can_read_line() const;
-
-    bool can_read() const;
-
-    enum class SeekMode {
-        SetPosition,
-        FromCurrentPosition,
-        FromEndPosition,
-    };
-
-    bool seek(i64, SeekMode = SeekMode::SetPosition, off_t* = nullptr);
-
-    virtual bool open(IODevice::OpenMode) = 0;
-    virtual bool close();
-
-    int printf(const char*, ...);
-
-    LineIterator line_begin() & { return LineIterator(*this); }
-    LineIterator line_end() { return LineIterator(*this, true); }
-
-protected:
-    explicit IODevice(Object* parent = nullptr);
-
-    void set_fd(int);
-    void set_mode(OpenMode mode) { m_mode = mode; }
-    void set_error(int error) const { m_error = error; }
-    void set_eof(bool eof) const { m_eof = eof; }
-
-    virtual void did_update_fd(int) { }
-
-private:
-    bool populate_read_buffer() const;
-    bool can_read_from_fd() const;
-
-    int m_fd { -1 };
-    OpenMode m_mode { NotOpen };
-    mutable int m_error { 0 };
-    mutable bool m_eof { false };
-    mutable Vector<u8> m_buffered_data;
-};
-
-}
diff --git a/Libraries/LibCore/IODeviceStreamReader.h b/Libraries/LibCore/IODeviceStreamReader.h
deleted file mode 100644
index 0339c30272..0000000000
--- a/Libraries/LibCore/IODeviceStreamReader.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/StdLibExtras.h>
-#include <LibCore/IODevice.h>
-
-namespace Core {
-
-class IODeviceStreamReader {
-public:
-    IODeviceStreamReader(IODevice& device)
-        : m_device(device)
-    {
-    }
-
-    bool handle_read_failure()
-    {
-        return exchange(m_had_failure, false);
-    }
-
-    template<typename T>
-    IODeviceStreamReader& operator>>(T& value)
-    {
-        int nread = m_device.read((u8*)&value, sizeof(T));
-        ASSERT(nread == sizeof(T));
-        if (nread != sizeof(T))
-            m_had_failure = true;
-        return *this;
-    }
-
-private:
-    IODevice& m_device;
-    bool m_had_failure { false };
-};
-
-}
diff --git a/Libraries/LibCore/LocalServer.cpp b/Libraries/LibCore/LocalServer.cpp
deleted file mode 100644
index 092cf82388..0000000000
--- a/Libraries/LibCore/LocalServer.cpp
+++ /dev/null
@@ -1,161 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <LibCore/LocalServer.h>
-#include <LibCore/LocalSocket.h>
-#include <LibCore/Notifier.h>
-#include <stdio.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
-#ifndef SOCK_NONBLOCK
-#    include <sys/ioctl.h>
-#endif
-
-namespace Core {
-
-LocalServer::LocalServer(Object* parent)
-    : Object(parent)
-{
-}
-
-LocalServer::~LocalServer()
-{
-    if (m_fd >= 0)
-        ::close(m_fd);
-}
-
-bool LocalServer::take_over_from_system_server()
-{
-    if (m_listening)
-        return false;
-
-    constexpr auto socket_takeover = "SOCKET_TAKEOVER";
-
-    if (getenv(socket_takeover)) {
-        // Sanity check: it has to be a socket.
-        struct stat stat;
-        int rc = fstat(3, &stat);
-        if (rc == 0 && S_ISSOCK(stat.st_mode)) {
-            // The SystemServer has passed us the socket as fd 3,
-            // so use that instead of creating our own.
-            m_fd = 3;
-            // It had to be !CLOEXEC for obvious reasons, but we
-            // don't need it to be !CLOEXEC anymore, so set the
-            // CLOEXEC flag now.
-            fcntl(m_fd, F_SETFD, FD_CLOEXEC);
-            // We wouldn't want our children to think we're passing
-            // them a socket either, so unset the env variable.
-            unsetenv(socket_takeover);
-
-            m_listening = true;
-            setup_notifier();
-            return true;
-        } else {
-            if (rc != 0)
-                perror("fstat");
-            dbgln("It's not a socket, what the heck??");
-        }
-    }
-
-    dbgln("Failed to take the socket over from SystemServer");
-
-    return false;
-}
-
-void LocalServer::setup_notifier()
-{
-    m_notifier = Notifier::construct(m_fd, Notifier::Event::Read, this);
-    m_notifier->on_ready_to_read = [this] {
-        if (on_ready_to_accept)
-            on_ready_to_accept();
-    };
-}
-
-bool LocalServer::listen(const String& address)
-{
-    if (m_listening)
-        return false;
-
-    int rc;
-
-#ifdef SOCK_NONBLOCK
-    m_fd = socket(AF_LOCAL, SOCK_STREAM | SOCK_NONBLOCK | SOCK_CLOEXEC, 0);
-#else
-    m_fd = socket(AF_LOCAL, SOCK_STREAM, 0);
-    int option = 1;
-    ioctl(m_fd, FIONBIO, &option);
-    fcntl(m_fd, F_SETFD, FD_CLOEXEC);
-#endif
-    ASSERT(m_fd >= 0);
-#ifndef __APPLE__
-    rc = fchmod(m_fd, 0600);
-    if (rc < 0) {
-        perror("fchmod");
-        ASSERT_NOT_REACHED();
-    }
-#endif
-
-    auto socket_address = SocketAddress::local(address);
-    auto un_optional = socket_address.to_sockaddr_un();
-    if (!un_optional.has_value()) {
-        perror("bind");
-        return false;
-    }
-    auto un = un_optional.value();
-    rc = ::bind(m_fd, (const sockaddr*)&un, sizeof(un));
-    if (rc < 0) {
-        perror("bind");
-        return false;
-    }
-
-    rc = ::listen(m_fd, 5);
-    if (rc < 0) {
-        perror("listen");
-        return false;
-    }
-
-    m_listening = true;
-    setup_notifier();
-    return true;
-}
-
-RefPtr<LocalSocket> LocalServer::accept()
-{
-    ASSERT(m_listening);
-    sockaddr_un un;
-    socklen_t un_size = sizeof(un);
-    int accepted_fd = ::accept(m_fd, (sockaddr*)&un, &un_size);
-    if (accepted_fd < 0) {
-        perror("accept");
-        return nullptr;
-    }
-
-    return LocalSocket::construct(accepted_fd);
-}
-
-}
diff --git a/Libraries/LibCore/LocalServer.h b/Libraries/LibCore/LocalServer.h
deleted file mode 100644
index bcb4fa6c00..0000000000
--- a/Libraries/LibCore/LocalServer.h
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibCore/Notifier.h>
-#include <LibCore/Object.h>
-
-namespace Core {
-
-class LocalServer : public Object {
-    C_OBJECT(LocalServer)
-public:
-    virtual ~LocalServer() override;
-
-    bool take_over_from_system_server();
-    bool is_listening() const { return m_listening; }
-    bool listen(const String& address);
-
-    RefPtr<LocalSocket> accept();
-
-    Function<void()> on_ready_to_accept;
-
-private:
-    explicit LocalServer(Object* parent = nullptr);
-
-    void setup_notifier();
-
-    int m_fd { -1 };
-    bool m_listening { false };
-    RefPtr<Notifier> m_notifier;
-};
-
-}
diff --git a/Libraries/LibCore/LocalSocket.cpp b/Libraries/LibCore/LocalSocket.cpp
deleted file mode 100644
index d49aa1d166..0000000000
--- a/Libraries/LibCore/LocalSocket.cpp
+++ /dev/null
@@ -1,107 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <LibCore/LocalSocket.h>
-#include <errno.h>
-#include <stdio.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-
-#ifndef SOCK_NONBLOCK
-#    include <sys/ioctl.h>
-#endif
-
-namespace Core {
-
-LocalSocket::LocalSocket(int fd, Object* parent)
-    : Socket(Socket::Type::Local, parent)
-{
-    // NOTE: This constructor is used by LocalServer::accept(), so the socket is already connected.
-    m_connected = true;
-    set_fd(fd);
-    set_mode(IODevice::ReadWrite);
-    set_error(0);
-}
-
-LocalSocket::LocalSocket(Object* parent)
-    : Socket(Socket::Type::Local, parent)
-{
-
-#ifdef SOCK_NONBLOCK
-    int fd = socket(AF_LOCAL, SOCK_STREAM | SOCK_NONBLOCK | SOCK_CLOEXEC, 0);
-#else
-    int fd = socket(AF_LOCAL, SOCK_STREAM, 0);
-    int option = 1;
-    ioctl(fd, FIONBIO, &option);
-    fcntl(fd, F_SETFD, FD_CLOEXEC);
-#endif
-
-    if (fd < 0) {
-        set_error(errno);
-    } else {
-        set_fd(fd);
-        set_mode(IODevice::ReadWrite);
-        set_error(0);
-    }
-}
-
-LocalSocket::~LocalSocket()
-{
-}
-
-RefPtr<LocalSocket> LocalSocket::take_over_accepted_socket_from_system_server()
-{
-    constexpr auto socket_takeover = "SOCKET_TAKEOVER";
-    if (!getenv(socket_takeover))
-        return nullptr;
-
-    // The SystemServer has passed us the socket as fd 3,
-    // so use that instead of creating our own.
-    constexpr int fd = 3;
-
-    // Sanity check: it has to be a socket.
-    struct stat stat;
-    int rc = fstat(fd, &stat);
-    if (rc < 0 || !S_ISSOCK(stat.st_mode)) {
-        if (rc != 0)
-            perror("fstat");
-        dbgln("ERROR: The fd we got from SystemServer is not a socket");
-        return nullptr;
-    }
-
-    auto socket = LocalSocket::construct(fd);
-
-    // It had to be !CLOEXEC for obvious reasons, but we
-    // don't need it to be !CLOEXEC anymore, so set the
-    // CLOEXEC flag now.
-    fcntl(fd, F_SETFD, FD_CLOEXEC);
-    // We wouldn't want our children to think we're passing
-    // them a socket either, so unset the env variable.
-    unsetenv(socket_takeover);
-    return socket;
-}
-
-}
diff --git a/Libraries/LibCore/LocalSocket.h b/Libraries/LibCore/LocalSocket.h
deleted file mode 100644
index 921e16aaa2..0000000000
--- a/Libraries/LibCore/LocalSocket.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibCore/Socket.h>
-
-namespace Core {
-
-class LocalSocket final : public Socket {
-    C_OBJECT(LocalSocket)
-public:
-    virtual ~LocalSocket() override;
-
-    static RefPtr<LocalSocket> take_over_accepted_socket_from_system_server();
-
-private:
-    explicit LocalSocket(Object* parent = nullptr);
-    LocalSocket(int fd, Object* parent = nullptr);
-};
-
-}
diff --git a/Libraries/LibCore/MimeData.cpp b/Libraries/LibCore/MimeData.cpp
deleted file mode 100644
index e48908661c..0000000000
--- a/Libraries/LibCore/MimeData.cpp
+++ /dev/null
@@ -1,102 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/StringBuilder.h>
-#include <LibCore/MimeData.h>
-
-namespace Core {
-
-Vector<String> MimeData::formats() const
-{
-    Vector<String> mime_types;
-    mime_types.ensure_capacity(m_data.size());
-    for (auto it : m_data)
-        mime_types.unchecked_append(it.key);
-    return mime_types;
-}
-
-Vector<URL> MimeData::urls() const
-{
-    auto it = m_data.find("text/uri-list");
-    if (it == m_data.end())
-        return {};
-    Vector<URL> urls;
-    for (auto& line : StringView(it->value).split_view('\n')) {
-        urls.append(URL(line));
-    }
-    return urls;
-}
-
-void MimeData::set_urls(const Vector<URL>& urls)
-{
-    StringBuilder builder;
-    for (auto& url : urls) {
-        builder.append(url.to_string());
-        builder.append('\n');
-    }
-    set_data("text/uri-list", builder.to_byte_buffer());
-}
-
-String MimeData::text() const
-{
-    return String::copy(m_data.get("text/plain").value_or({}));
-}
-
-void MimeData::set_text(const String& text)
-{
-    set_data("text/plain", text.to_byte_buffer());
-}
-
-String guess_mime_type_based_on_filename(const StringView& path)
-{
-    if (path.ends_with(".pbm", CaseSensitivity::CaseInsensitive))
-        return "image/x‑portable‑bitmap";
-    if (path.ends_with(".pgm", CaseSensitivity::CaseInsensitive))
-        return "image/x‑portable‑graymap";
-    if (path.ends_with(".png", CaseSensitivity::CaseInsensitive))
-        return "image/png";
-    if (path.ends_with(".ppm", CaseSensitivity::CaseInsensitive))
-        return "image/x‑portable‑pixmap";
-    if (path.ends_with(".gif", CaseSensitivity::CaseInsensitive))
-        return "image/gif";
-    if (path.ends_with(".bmp", CaseSensitivity::CaseInsensitive))
-        return "image/bmp";
-    if (path.ends_with(".jpg", CaseSensitivity::CaseInsensitive) || path.ends_with(".jpeg", CaseSensitivity::CaseInsensitive))
-        return "image/jpeg";
-    if (path.ends_with(".svg", CaseSensitivity::CaseInsensitive))
-        return "image/svg+xml";
-    if (path.ends_with(".md", CaseSensitivity::CaseInsensitive))
-        return "text/markdown";
-    if (path.ends_with(".html", CaseSensitivity::CaseInsensitive) || path.ends_with(".htm", CaseSensitivity::CaseInsensitive))
-        return "text/html";
-    if (path.ends_with("/", CaseSensitivity::CaseInsensitive))
-        return "text/html";
-    if (path.ends_with(".csv", CaseSensitivity::CaseInsensitive))
-        return "text/csv";
-    return "text/plain";
-}
-
-}
diff --git a/Libraries/LibCore/MimeData.h b/Libraries/LibCore/MimeData.h
deleted file mode 100644
index fe575ab675..0000000000
--- a/Libraries/LibCore/MimeData.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/ByteBuffer.h>
-#include <AK/HashMap.h>
-#include <AK/URL.h>
-#include <LibCore/Object.h>
-
-namespace Core {
-
-class MimeData : public Object {
-    C_OBJECT(MimeData);
-
-public:
-    virtual ~MimeData() { }
-
-    ByteBuffer data(const String& mime_type) const { return m_data.get(mime_type).value_or({}); }
-    void set_data(const String& mime_type, const ByteBuffer& data) { m_data.set(mime_type, data); }
-
-    bool has_format(const String& mime_type) const { return m_data.contains(mime_type); }
-    Vector<String> formats() const;
-
-    // Convenience helpers for "text/plain"
-    bool has_text() const { return has_format("text/plain"); }
-    String text() const;
-    void set_text(const String&);
-
-    // Convenience helpers for "text/uri-list"
-    bool has_urls() const { return has_format("text/uri-list"); }
-    Vector<URL> urls() const;
-    void set_urls(const Vector<URL>&);
-
-    const HashMap<String, ByteBuffer>& all_data() const { return m_data; }
-
-private:
-    MimeData() { }
-    explicit MimeData(const HashMap<String, ByteBuffer>& data)
-        : m_data(data)
-    {
-    }
-
-    HashMap<String, ByteBuffer> m_data;
-};
-
-String guess_mime_type_based_on_filename(const StringView&);
-
-}
diff --git a/Libraries/LibCore/NetworkJob.cpp b/Libraries/LibCore/NetworkJob.cpp
deleted file mode 100644
index 0b48a93a72..0000000000
--- a/Libraries/LibCore/NetworkJob.cpp
+++ /dev/null
@@ -1,108 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <LibCore/NetworkJob.h>
-#include <LibCore/NetworkResponse.h>
-#include <stdio.h>
-
-//#define CNETWORKJOB_DEBUG
-
-namespace Core {
-
-NetworkJob::NetworkJob(OutputStream& output_stream)
-    : m_output_stream(output_stream)
-{
-}
-
-NetworkJob::~NetworkJob()
-{
-}
-
-void NetworkJob::start()
-{
-}
-
-void NetworkJob::shutdown()
-{
-}
-
-void NetworkJob::did_finish(NonnullRefPtr<NetworkResponse>&& response)
-{
-    // NOTE: We protect ourselves here, since the on_finish callback may otherwise
-    //       trigger destruction of this job somehow.
-    NonnullRefPtr<NetworkJob> protector(*this);
-
-    m_response = move(response);
-#ifdef CNETWORKJOB_DEBUG
-    dbg() << *this << " job did_finish!";
-#endif
-    ASSERT(on_finish);
-    on_finish(true);
-    shutdown();
-}
-
-void NetworkJob::did_fail(Error error)
-{
-    // NOTE: We protect ourselves here, since the on_finish callback may otherwise
-    //       trigger destruction of this job somehow.
-    NonnullRefPtr<NetworkJob> protector(*this);
-
-    m_error = error;
-#ifdef CNETWORKJOB_DEBUG
-    dbgprintf("%s{%p} job did_fail! error: %u (%s)\n", class_name(), this, (unsigned)error, to_string(error));
-#endif
-    ASSERT(on_finish);
-    on_finish(false);
-    shutdown();
-}
-
-void NetworkJob::did_progress(Optional<u32> total_size, u32 downloaded)
-{
-    // NOTE: We protect ourselves here, since the callback may otherwise
-    //       trigger destruction of this job somehow.
-    NonnullRefPtr<NetworkJob> protector(*this);
-
-    if (on_progress)
-        on_progress(total_size, downloaded);
-}
-
-const char* to_string(NetworkJob::Error error)
-{
-    switch (error) {
-    case NetworkJob::Error::ProtocolFailed:
-        return "ProtocolFailed";
-    case NetworkJob::Error::ConnectionFailed:
-        return "ConnectionFailed";
-    case NetworkJob::Error::TransmissionFailed:
-        return "TransmissionFailed";
-    case NetworkJob::Error::Cancelled:
-        return "Cancelled";
-    default:
-        return "(Unknown error)";
-    }
-}
-
-}
diff --git a/Libraries/LibCore/NetworkJob.h b/Libraries/LibCore/NetworkJob.h
deleted file mode 100644
index 94ead44805..0000000000
--- a/Libraries/LibCore/NetworkJob.h
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Function.h>
-#include <AK/Stream.h>
-#include <LibCore/Object.h>
-
-namespace Core {
-
-class NetworkJob : public Object {
-    C_OBJECT_ABSTRACT(NetworkJob)
-public:
-    enum class Error {
-        None,
-        ConnectionFailed,
-        TransmissionFailed,
-        ProtocolFailed,
-        Cancelled,
-    };
-    virtual ~NetworkJob() override;
-
-    // Could fire twice, after Headers and after Trailers!
-    Function<void(const HashMap<String, String, CaseInsensitiveStringTraits>& response_headers, Optional<u32> response_code)> on_headers_received;
-    Function<void(bool success)> on_finish;
-    Function<void(Optional<u32>, u32)> on_progress;
-
-    bool is_cancelled() const { return m_error == Error::Cancelled; }
-    bool has_error() const { return m_error != Error::None; }
-    Error error() const { return m_error; }
-    NetworkResponse* response() { return m_response.ptr(); }
-    const NetworkResponse* response() const { return m_response.ptr(); }
-
-    virtual void start() = 0;
-    virtual void shutdown() = 0;
-
-    void cancel()
-    {
-        shutdown();
-        m_error = Error::Cancelled;
-    }
-
-protected:
-    NetworkJob(OutputStream&);
-    void did_finish(NonnullRefPtr<NetworkResponse>&&);
-    void did_fail(Error);
-    void did_progress(Optional<u32> total_size, u32 downloaded);
-
-    size_t do_write(ReadonlyBytes bytes) { return m_output_stream.write(bytes); }
-
-private:
-    RefPtr<NetworkResponse> m_response;
-    OutputStream& m_output_stream;
-    Error m_error { Error::None };
-};
-
-const char* to_string(NetworkJob::Error);
-
-}
diff --git a/Libraries/LibCore/NetworkResponse.cpp b/Libraries/LibCore/NetworkResponse.cpp
deleted file mode 100644
index ebaf7eff7d..0000000000
--- a/Libraries/LibCore/NetworkResponse.cpp
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <LibCore/NetworkResponse.h>
-
-namespace Core {
-
-NetworkResponse::NetworkResponse()
-{
-}
-
-NetworkResponse::~NetworkResponse()
-{
-}
-
-}
diff --git a/Libraries/LibCore/NetworkResponse.h b/Libraries/LibCore/NetworkResponse.h
deleted file mode 100644
index d2ff33a569..0000000000
--- a/Libraries/LibCore/NetworkResponse.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/ByteBuffer.h>
-#include <AK/RefCounted.h>
-
-namespace Core {
-
-class NetworkResponse : public RefCounted<NetworkResponse> {
-public:
-    virtual ~NetworkResponse();
-
-    bool is_error() const { return m_error; }
-
-protected:
-    explicit NetworkResponse();
-
-    bool m_error { false };
-};
-
-}
diff --git a/Libraries/LibCore/Notifier.cpp b/Libraries/LibCore/Notifier.cpp
deleted file mode 100644
index 655a73ed1b..0000000000
--- a/Libraries/LibCore/Notifier.cpp
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/Badge.h>
-#include <LibCore/Event.h>
-#include <LibCore/EventLoop.h>
-#include <LibCore/Notifier.h>
-
-namespace Core {
-
-Notifier::Notifier(int fd, unsigned event_mask, Object* parent)
-    : Object(parent)
-    , m_fd(fd)
-    , m_event_mask(event_mask)
-{
-    set_enabled(true);
-}
-
-Notifier::~Notifier()
-{
-    set_enabled(false);
-}
-
-void Notifier::set_enabled(bool enabled)
-{
-    if (m_fd < 0)
-        return;
-    if (enabled)
-        Core::EventLoop::register_notifier({}, *this);
-    else
-        Core::EventLoop::unregister_notifier({}, *this);
-}
-
-void Notifier::close()
-{
-    if (m_fd < 0)
-        return;
-    set_enabled(false);
-    m_fd = -1;
-}
-
-void Notifier::event(Core::Event& event)
-{
-    if (event.type() == Core::Event::NotifierRead && on_ready_to_read) {
-        on_ready_to_read();
-    } else if (event.type() == Core::Event::NotifierWrite && on_ready_to_write) {
-        on_ready_to_write();
-    } else {
-        Object::event(event);
-    }
-}
-
-}
diff --git a/Libraries/LibCore/Notifier.h b/Libraries/LibCore/Notifier.h
deleted file mode 100644
index b197b55204..0000000000
--- a/Libraries/LibCore/Notifier.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Function.h>
-#include <LibCore/Object.h>
-
-namespace Core {
-
-class Notifier : public Object {
-    C_OBJECT(Notifier)
-public:
-    enum Event {
-        None = 0,
-        Read = 1,
-        Write = 2,
-        Exceptional = 4,
-    };
-
-    virtual ~Notifier() override;
-
-    void set_enabled(bool);
-
-    Function<void()> on_ready_to_read;
-    Function<void()> on_ready_to_write;
-
-    void close();
-
-    int fd() const { return m_fd; }
-    unsigned event_mask() const { return m_event_mask; }
-    void set_event_mask(unsigned event_mask) { m_event_mask = event_mask; }
-
-    void event(Core::Event&) override;
-
-private:
-    Notifier(int fd, unsigned event_mask, Object* parent = nullptr);
-
-    int m_fd { -1 };
-    unsigned m_event_mask { 0 };
-};
-
-}
diff --git a/Libraries/LibCore/Object.cpp b/Libraries/LibCore/Object.cpp
deleted file mode 100644
index 55cd102409..0000000000
--- a/Libraries/LibCore/Object.cpp
+++ /dev/null
@@ -1,270 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/Assertions.h>
-#include <AK/Badge.h>
-#include <AK/JsonObject.h>
-#include <LibCore/Event.h>
-#include <LibCore/EventLoop.h>
-#include <LibCore/Object.h>
-#include <stdio.h>
-
-namespace Core {
-
-IntrusiveList<Object, &Object::m_all_objects_list_node>& Object::all_objects()
-{
-    static IntrusiveList<Object, &Object::m_all_objects_list_node> objects;
-    return objects;
-}
-
-Object::Object(Object* parent)
-    : m_parent(parent)
-{
-    all_objects().append(*this);
-    if (m_parent)
-        m_parent->add_child(*this);
-
-    REGISTER_READONLY_STRING_PROPERTY("class_name", class_name);
-    REGISTER_STRING_PROPERTY("name", name, set_name);
-
-    register_property(
-        "address", [this] { return FlatPtr(this); },
-        [](auto&) { return false; });
-
-    register_property(
-        "parent", [this] { return FlatPtr(this->parent()); },
-        [](auto&) { return false; });
-}
-
-Object::~Object()
-{
-    // NOTE: We move our children out to a stack vector to prevent other
-    //       code from trying to iterate over them.
-    auto children = move(m_children);
-    // NOTE: We also unparent the children, so that they won't try to unparent
-    //       themselves in their own destructors.
-    for (auto& child : children)
-        child.m_parent = nullptr;
-
-    all_objects().remove(*this);
-    stop_timer();
-    if (m_parent)
-        m_parent->remove_child(*this);
-}
-
-void Object::event(Core::Event& event)
-{
-    switch (event.type()) {
-    case Core::Event::Timer:
-        return timer_event(static_cast<TimerEvent&>(event));
-    case Core::Event::ChildAdded:
-    case Core::Event::ChildRemoved:
-        return child_event(static_cast<ChildEvent&>(event));
-    case Core::Event::Invalid:
-        ASSERT_NOT_REACHED();
-        break;
-    case Core::Event::Custom:
-        return custom_event(static_cast<CustomEvent&>(event));
-    default:
-        break;
-    }
-}
-
-void Object::add_child(Object& object)
-{
-    // FIXME: Should we support reparenting objects?
-    ASSERT(!object.parent() || object.parent() == this);
-    object.m_parent = this;
-    m_children.append(object);
-    Core::ChildEvent child_event(Core::Event::ChildAdded, object);
-    event(child_event);
-}
-
-void Object::insert_child_before(Object& new_child, Object& before_child)
-{
-    // FIXME: Should we support reparenting objects?
-    ASSERT(!new_child.parent() || new_child.parent() == this);
-    new_child.m_parent = this;
-    m_children.insert_before_matching(new_child, [&](auto& existing_child) { return existing_child.ptr() == &before_child; });
-    Core::ChildEvent child_event(Core::Event::ChildAdded, new_child, &before_child);
-    event(child_event);
-}
-
-void Object::remove_child(Object& object)
-{
-    for (size_t i = 0; i < m_children.size(); ++i) {
-        if (m_children.ptr_at(i).ptr() == &object) {
-            // NOTE: We protect the child so it survives the handling of ChildRemoved.
-            NonnullRefPtr<Object> protector = object;
-            object.m_parent = nullptr;
-            m_children.remove(i);
-            Core::ChildEvent child_event(Core::Event::ChildRemoved, object);
-            event(child_event);
-            return;
-        }
-    }
-    ASSERT_NOT_REACHED();
-}
-
-void Object::remove_all_children()
-{
-    while (!m_children.is_empty())
-        m_children.first().remove_from_parent();
-}
-
-void Object::timer_event(Core::TimerEvent&)
-{
-}
-
-void Object::child_event(Core::ChildEvent&)
-{
-}
-
-void Object::custom_event(CustomEvent&)
-{
-}
-
-void Object::start_timer(int ms, TimerShouldFireWhenNotVisible fire_when_not_visible)
-{
-    if (m_timer_id) {
-        dbgln("{} {:p} already has a timer!", class_name(), this);
-        ASSERT_NOT_REACHED();
-    }
-
-    m_timer_id = Core::EventLoop::register_timer(*this, ms, true, fire_when_not_visible);
-}
-
-void Object::stop_timer()
-{
-    if (!m_timer_id)
-        return;
-    bool success = Core::EventLoop::unregister_timer(m_timer_id);
-    ASSERT(success);
-    m_timer_id = 0;
-}
-
-void Object::dump_tree(int indent)
-{
-    for (int i = 0; i < indent; ++i) {
-        printf(" ");
-    }
-    printf("%s{%p}", class_name(), this);
-    if (!name().is_null())
-        printf(" %s", name().characters());
-    printf("\n");
-
-    for_each_child([&](auto& child) {
-        child.dump_tree(indent + 2);
-        return IterationDecision::Continue;
-    });
-}
-
-void Object::deferred_invoke(Function<void(Object&)> invokee)
-{
-    Core::EventLoop::current().post_event(*this, make<Core::DeferredInvocationEvent>(move(invokee)));
-}
-
-void Object::save_to(JsonObject& json)
-{
-    for (auto& it : m_properties) {
-        auto& property = it.value;
-        json.set(property->name(), property->get());
-    }
-}
-
-JsonValue Object::property(const StringView& name) const
-{
-    auto it = m_properties.find(name);
-    if (it == m_properties.end())
-        return JsonValue();
-    return it->value->get();
-}
-
-bool Object::set_property(const StringView& name, const JsonValue& value)
-{
-    auto it = m_properties.find(name);
-    if (it == m_properties.end())
-        return false;
-    return it->value->set(value);
-}
-
-bool Object::is_ancestor_of(const Object& other) const
-{
-    if (&other == this)
-        return false;
-    for (auto* ancestor = other.parent(); ancestor; ancestor = ancestor->parent()) {
-        if (ancestor == this)
-            return true;
-    }
-    return false;
-}
-
-void Object::dispatch_event(Core::Event& e, Object* stay_within)
-{
-    ASSERT(!stay_within || stay_within == this || stay_within->is_ancestor_of(*this));
-    auto* target = this;
-    do {
-        target->event(e);
-        target = target->parent();
-        if (target == stay_within) {
-            // Prevent the event from bubbling any further.
-            return;
-        }
-    } while (target && !e.is_accepted());
-}
-
-bool Object::is_visible_for_timer_purposes() const
-{
-    if (parent())
-        return parent()->is_visible_for_timer_purposes();
-    return true;
-}
-
-void Object::increment_inspector_count(Badge<RPCClient>)
-{
-    ++m_inspector_count;
-    if (m_inspector_count == 1)
-        did_begin_inspection();
-}
-
-void Object::decrement_inspector_count(Badge<RPCClient>)
-{
-    --m_inspector_count;
-    if (!m_inspector_count)
-        did_end_inspection();
-}
-
-void Object::register_property(const String& name, Function<JsonValue()> getter, Function<bool(const JsonValue&)> setter)
-{
-    m_properties.set(name, make<Property>(name, move(getter), move(setter)));
-}
-
-const LogStream& operator<<(const LogStream& stream, const Object& object)
-{
-    return stream << object.class_name() << '{' << &object << '}';
-}
-
-}
diff --git a/Libraries/LibCore/Object.h b/Libraries/LibCore/Object.h
deleted file mode 100644
index 9270d347d0..0000000000
--- a/Libraries/LibCore/Object.h
+++ /dev/null
@@ -1,346 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Forward.h>
-#include <AK/HashMap.h>
-#include <AK/IntrusiveList.h>
-#include <AK/Noncopyable.h>
-#include <AK/NonnullRefPtrVector.h>
-#include <AK/String.h>
-#include <AK/TypeCasts.h>
-#include <AK/Weakable.h>
-#include <LibCore/Forward.h>
-#include <LibCore/Property.h>
-
-namespace Core {
-
-class RPCClient;
-
-enum class TimerShouldFireWhenNotVisible {
-    No = 0,
-    Yes
-};
-
-#define C_OBJECT(klass)                                                \
-public:                                                                \
-    virtual const char* class_name() const override { return #klass; } \
-    template<class... Args>                                            \
-    static inline NonnullRefPtr<klass> construct(Args&&... args)       \
-    {                                                                  \
-        return adopt(*new klass(forward<Args>(args)...));              \
-    }
-
-#define C_OBJECT_ABSTRACT(klass) \
-public:                          \
-    virtual const char* class_name() const override { return #klass; }
-
-class Object
-    : public RefCounted<Object>
-    , public Weakable<Object> {
-    // NOTE: No C_OBJECT macro for Core::Object itself.
-
-    AK_MAKE_NONCOPYABLE(Object);
-    AK_MAKE_NONMOVABLE(Object);
-
-    IntrusiveListNode m_all_objects_list_node;
-
-public:
-    virtual ~Object();
-
-    virtual const char* class_name() const = 0;
-    virtual void event(Core::Event&);
-
-    const String& name() const { return m_name; }
-    void set_name(const StringView& name) { m_name = name; }
-
-    NonnullRefPtrVector<Object>& children() { return m_children; }
-    const NonnullRefPtrVector<Object>& children() const { return m_children; }
-
-    template<typename Callback>
-    void for_each_child(Callback callback)
-    {
-        for (auto& child : m_children) {
-            if (callback(child) == IterationDecision::Break)
-                return;
-        }
-    }
-
-    template<typename T, typename Callback>
-    void for_each_child_of_type(Callback callback) requires IsBaseOf<Object, T>::value;
-
-    template<typename T>
-    T* find_child_of_type_named(const String&) requires IsBaseOf<Object, T>::value;
-
-    template<typename T>
-    T* find_descendant_of_type_named(const String&) requires IsBaseOf<Object, T>::value;
-
-    bool is_ancestor_of(const Object&) const;
-
-    Object* parent() { return m_parent; }
-    const Object* parent() const { return m_parent; }
-
-    void start_timer(int ms, TimerShouldFireWhenNotVisible = TimerShouldFireWhenNotVisible::No);
-    void stop_timer();
-    bool has_timer() const { return m_timer_id; }
-
-    void add_child(Object&);
-    void insert_child_before(Object& new_child, Object& before_child);
-    void remove_child(Object&);
-    void remove_all_children();
-
-    void dump_tree(int indent = 0);
-
-    void deferred_invoke(Function<void(Object&)>);
-
-    void save_to(AK::JsonObject&);
-
-    bool set_property(const StringView& name, const JsonValue& value);
-    JsonValue property(const StringView& name) const;
-    const HashMap<String, NonnullOwnPtr<Property>>& properties() const { return m_properties; }
-
-    static IntrusiveList<Object, &Object::m_all_objects_list_node>& all_objects();
-
-    void dispatch_event(Core::Event&, Object* stay_within = nullptr);
-
-    void remove_from_parent()
-    {
-        if (m_parent)
-            m_parent->remove_child(*this);
-    }
-
-    template<class T, class... Args>
-    inline T& add(Args&&... args)
-    {
-        auto child = T::construct(forward<Args>(args)...);
-        add_child(*child);
-        return child;
-    }
-
-    virtual bool is_visible_for_timer_purposes() const;
-
-    bool is_being_inspected() const { return m_inspector_count; }
-
-    void increment_inspector_count(Badge<RPCClient>);
-    void decrement_inspector_count(Badge<RPCClient>);
-
-protected:
-    explicit Object(Object* parent = nullptr);
-
-    void register_property(const String& name, Function<JsonValue()> getter, Function<bool(const JsonValue&)> setter = nullptr);
-
-    virtual void timer_event(TimerEvent&);
-    virtual void custom_event(CustomEvent&);
-
-    // NOTE: You may get child events for children that are not yet fully constructed!
-    virtual void child_event(ChildEvent&);
-
-    virtual void did_begin_inspection() { }
-    virtual void did_end_inspection() { }
-
-private:
-    Object* m_parent { nullptr };
-    String m_name;
-    int m_timer_id { 0 };
-    unsigned m_inspector_count { 0 };
-    HashMap<String, NonnullOwnPtr<Property>> m_properties;
-    NonnullRefPtrVector<Object> m_children;
-};
-
-}
-
-template<>
-struct AK::Formatter<Core::Object> : AK::Formatter<FormatString> {
-    void format(FormatBuilder& builder, const Core::Object& value)
-    {
-        return AK::Formatter<FormatString>::format(builder, "{}({})", value.class_name(), &value);
-    }
-};
-
-namespace Core {
-template<typename T, typename Callback>
-inline void Object::for_each_child_of_type(Callback callback) requires IsBaseOf<Object, T>::value
-{
-    for_each_child([&](auto& child) {
-        if (auto* child_as_t = dynamic_cast<T*>(&child); child_as_t)
-            return callback(*child_as_t);
-        return IterationDecision::Continue;
-    });
-}
-
-template<typename T>
-T* Object::find_child_of_type_named(const String& name) requires IsBaseOf<Object, T>::value
-{
-    T* found_child = nullptr;
-    for_each_child_of_type<T>([&](auto& child) {
-        if (child.name() == name) {
-            found_child = &child;
-            return IterationDecision::Break;
-        }
-        return IterationDecision::Continue;
-    });
-
-    return found_child;
-}
-
-template<typename T>
-T* Object::find_descendant_of_type_named(const String& name) requires IsBaseOf<Object, T>::value
-{
-    auto* this_as_t = dynamic_cast<T*>(this);
-    if (this_as_t && this->name() == name)
-        return this_as_t;
-    T* found_child = nullptr;
-    for_each_child([&](auto& child) {
-        found_child = child.template find_descendant_of_type_named<T>(name);
-        if (found_child)
-            return IterationDecision::Break;
-        return IterationDecision::Continue;
-    });
-    return found_child;
-}
-
-const LogStream& operator<<(const LogStream&, const Object&);
-
-#define REGISTER_INT_PROPERTY(property_name, getter, setter) \
-    register_property(                                       \
-        property_name,                                       \
-        [this] { return this->getter(); },                   \
-        [this](auto& value) {                                \
-            this->setter(value.template to_number<int>());   \
-            return true;                                     \
-        });
-
-#define REGISTER_BOOL_PROPERTY(property_name, getter, setter) \
-    register_property(                                        \
-        property_name,                                        \
-        [this] { return this->getter(); },                    \
-        [this](auto& value) {                                 \
-            this->setter(value.to_bool());                    \
-            return true;                                      \
-        });
-
-#define REGISTER_STRING_PROPERTY(property_name, getter, setter) \
-    register_property(                                          \
-        property_name,                                          \
-        [this] { return this->getter(); },                      \
-        [this](auto& value) {                                   \
-            this->setter(value.to_string());                    \
-            return true;                                        \
-        });
-
-#define REGISTER_READONLY_STRING_PROPERTY(property_name, getter) \
-    register_property(                                           \
-        property_name,                                           \
-        [this] { return this->getter(); },                       \
-        {});
-
-#define REGISTER_RECT_PROPERTY(property_name, getter, setter)          \
-    register_property(                                                 \
-        property_name,                                                 \
-        [this] {                                                       \
-            auto rect = this->getter();                                \
-            JsonObject rect_object;                                    \
-            rect_object.set("x", rect.x());                            \
-            rect_object.set("y", rect.y());                            \
-            rect_object.set("width", rect.width());                    \
-            rect_object.set("height", rect.height());                  \
-            return rect_object;                                        \
-        },                                                             \
-        [this](auto& value) {                                          \
-            if (!value.is_object())                                    \
-                return false;                                          \
-            Gfx::IntRect rect;                                         \
-            rect.set_x(value.as_object().get("x").to_i32());           \
-            rect.set_y(value.as_object().get("y").to_i32());           \
-            rect.set_width(value.as_object().get("width").to_i32());   \
-            rect.set_height(value.as_object().get("height").to_i32()); \
-            setter(rect);                                              \
-            return true;                                               \
-        });
-
-#define REGISTER_SIZE_PROPERTY(property_name, getter, setter)          \
-    register_property(                                                 \
-        property_name,                                                 \
-        [this] {                                                       \
-            auto size = this->getter();                                \
-            JsonObject size_object;                                    \
-            size_object.set("width", size.width());                    \
-            size_object.set("height", size.height());                  \
-            return size_object;                                        \
-        },                                                             \
-        [this](auto& value) {                                          \
-            if (!value.is_object())                                    \
-                return false;                                          \
-            Gfx::IntSize size;                                         \
-            size.set_width(value.as_object().get("width").to_i32());   \
-            size.set_height(value.as_object().get("height").to_i32()); \
-            setter(size);                                              \
-            return true;                                               \
-        });
-
-#define REGISTER_ENUM_PROPERTY(property_name, getter, setter, EnumType, ...) \
-    register_property(                                                       \
-        property_name,                                                       \
-        [this]() -> JsonValue {                                              \
-            struct {                                                         \
-                EnumType enum_value;                                         \
-                String string_value;                                         \
-            } options[] = { __VA_ARGS__ };                                   \
-            auto enum_value = getter();                                      \
-            for (size_t i = 0; i < array_size(options); ++i) {               \
-                auto& option = options[i];                                   \
-                if (enum_value == option.enum_value)                         \
-                    return option.string_value;                              \
-            }                                                                \
-            return JsonValue();                                              \
-        },                                                                   \
-        [this](auto& value) {                                                \
-            struct {                                                         \
-                EnumType enum_value;                                         \
-                String string_value;                                         \
-            } options[] = { __VA_ARGS__ };                                   \
-            auto string_value = value.as_string();                           \
-            for (size_t i = 0; i < array_size(options); ++i) {               \
-                auto& option = options[i];                                   \
-                if (string_value == option.string_value) {                   \
-                    setter(option.enum_value);                               \
-                    return true;                                             \
-                }                                                            \
-            }                                                                \
-            return false;                                                    \
-        })
-
-#define REGISTER_TEXT_ALIGNMENT_PROPERTY(property_name, getter, setter) \
-    REGISTER_ENUM_PROPERTY(                                             \
-        property_name, getter, setter, Gfx::TextAlignment,              \
-        { Gfx::TextAlignment::TopLeft, "TopLeft" },                     \
-        { Gfx::TextAlignment::CenterLeft, "CenterLeft" },               \
-        { Gfx::TextAlignment::Center, "Center" },                       \
-        { Gfx::TextAlignment::CenterRight, "CenterRight" },             \
-        { Gfx::TextAlignment::TopRight, "TopRight" },                   \
-        { Gfx::TextAlignment::BottomRight, "BottomRight" })
-}
diff --git a/Libraries/LibCore/ProcessStatisticsReader.cpp b/Libraries/LibCore/ProcessStatisticsReader.cpp
deleted file mode 100644
index 566053d3af..0000000000
--- a/Libraries/LibCore/ProcessStatisticsReader.cpp
+++ /dev/null
@@ -1,142 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/ByteBuffer.h>
-#include <AK/JsonArray.h>
-#include <AK/JsonObject.h>
-#include <AK/JsonValue.h>
-#include <LibCore/File.h>
-#include <LibCore/ProcessStatisticsReader.h>
-#include <pwd.h>
-#include <stdio.h>
-
-namespace Core {
-
-HashMap<uid_t, String> ProcessStatisticsReader::s_usernames;
-
-Optional<HashMap<pid_t, Core::ProcessStatistics>> ProcessStatisticsReader::get_all(RefPtr<Core::File>& proc_all_file)
-{
-    if (proc_all_file) {
-        if (!proc_all_file->seek(0, Core::File::SeekMode::SetPosition)) {
-            fprintf(stderr, "ProcessStatisticsReader: Failed to refresh /proc/all: %s\n", proc_all_file->error_string());
-            return {};
-        }
-    } else {
-        proc_all_file = Core::File::construct("/proc/all");
-        if (!proc_all_file->open(Core::IODevice::ReadOnly)) {
-            fprintf(stderr, "ProcessStatisticsReader: Failed to open /proc/all: %s\n", proc_all_file->error_string());
-            return {};
-        }
-    }
-
-    HashMap<pid_t, Core::ProcessStatistics> map;
-
-    auto file_contents = proc_all_file->read_all();
-    auto json = JsonValue::from_string(file_contents);
-    if (!json.has_value())
-        return {};
-    json.value().as_array().for_each([&](auto& value) {
-        const JsonObject& process_object = value.as_object();
-        Core::ProcessStatistics process;
-
-        // kernel data first
-        process.pid = process_object.get("pid").to_u32();
-        process.pgid = process_object.get("pgid").to_u32();
-        process.pgp = process_object.get("pgp").to_u32();
-        process.sid = process_object.get("sid").to_u32();
-        process.uid = process_object.get("uid").to_u32();
-        process.gid = process_object.get("gid").to_u32();
-        process.ppid = process_object.get("ppid").to_u32();
-        process.nfds = process_object.get("nfds").to_u32();
-        process.name = process_object.get("name").to_string();
-        process.executable = process_object.get("executable").to_string();
-        process.tty = process_object.get("tty").to_string();
-        process.pledge = process_object.get("pledge").to_string();
-        process.veil = process_object.get("veil").to_string();
-        process.amount_virtual = process_object.get("amount_virtual").to_u32();
-        process.amount_resident = process_object.get("amount_resident").to_u32();
-        process.amount_shared = process_object.get("amount_shared").to_u32();
-        process.amount_dirty_private = process_object.get("amount_dirty_private").to_u32();
-        process.amount_clean_inode = process_object.get("amount_clean_inode").to_u32();
-        process.amount_purgeable_volatile = process_object.get("amount_purgeable_volatile").to_u32();
-        process.amount_purgeable_nonvolatile = process_object.get("amount_purgeable_nonvolatile").to_u32();
-
-        auto& thread_array = process_object.get_ptr("threads")->as_array();
-        process.threads.ensure_capacity(thread_array.size());
-        thread_array.for_each([&](auto& value) {
-            auto& thread_object = value.as_object();
-            Core::ThreadStatistics thread;
-            thread.tid = thread_object.get("tid").to_u32();
-            thread.times_scheduled = thread_object.get("times_scheduled").to_u32();
-            thread.name = thread_object.get("name").to_string();
-            thread.state = thread_object.get("state").to_string();
-            thread.ticks_user = thread_object.get("ticks_user").to_u32();
-            thread.ticks_kernel = thread_object.get("ticks_kernel").to_u32();
-            thread.cpu = thread_object.get("cpu").to_u32();
-            thread.priority = thread_object.get("priority").to_u32();
-            thread.effective_priority = thread_object.get("effective_priority").to_u32();
-            thread.syscall_count = thread_object.get("syscall_count").to_u32();
-            thread.inode_faults = thread_object.get("inode_faults").to_u32();
-            thread.zero_faults = thread_object.get("zero_faults").to_u32();
-            thread.cow_faults = thread_object.get("cow_faults").to_u32();
-            thread.unix_socket_read_bytes = thread_object.get("unix_socket_read_bytes").to_u32();
-            thread.unix_socket_write_bytes = thread_object.get("unix_socket_write_bytes").to_u32();
-            thread.ipv4_socket_read_bytes = thread_object.get("ipv4_socket_read_bytes").to_u32();
-            thread.ipv4_socket_write_bytes = thread_object.get("ipv4_socket_write_bytes").to_u32();
-            thread.file_read_bytes = thread_object.get("file_read_bytes").to_u32();
-            thread.file_write_bytes = thread_object.get("file_write_bytes").to_u32();
-            process.threads.append(move(thread));
-        });
-
-        // and synthetic data last
-        process.username = username_from_uid(process.uid);
-        map.set(process.pid, process);
-    });
-
-    return map;
-}
-
-Optional<HashMap<pid_t, Core::ProcessStatistics>> ProcessStatisticsReader::get_all()
-{
-    RefPtr<Core::File> proc_all_file;
-    return get_all(proc_all_file);
-}
-
-String ProcessStatisticsReader::username_from_uid(uid_t uid)
-{
-    if (s_usernames.is_empty()) {
-        setpwent();
-        while (auto* passwd = getpwent())
-            s_usernames.set(passwd->pw_uid, passwd->pw_name);
-        endpwent();
-    }
-
-    auto it = s_usernames.find(uid);
-    if (it != s_usernames.end())
-        return (*it).value;
-    return String::number(uid);
-}
-}
diff --git a/Libraries/LibCore/ProcessStatisticsReader.h b/Libraries/LibCore/ProcessStatisticsReader.h
deleted file mode 100644
index b6e506cd9d..0000000000
--- a/Libraries/LibCore/ProcessStatisticsReader.h
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/HashMap.h>
-#include <AK/String.h>
-#include <LibCore/File.h>
-#include <unistd.h>
-
-namespace Core {
-
-struct ThreadStatistics {
-    pid_t tid;
-    unsigned times_scheduled;
-    unsigned ticks_user;
-    unsigned ticks_kernel;
-    unsigned syscall_count;
-    unsigned inode_faults;
-    unsigned zero_faults;
-    unsigned cow_faults;
-    unsigned unix_socket_read_bytes;
-    unsigned unix_socket_write_bytes;
-    unsigned ipv4_socket_read_bytes;
-    unsigned ipv4_socket_write_bytes;
-    unsigned file_read_bytes;
-    unsigned file_write_bytes;
-    String state;
-    u32 cpu;
-    u32 priority;
-    u32 effective_priority;
-    String name;
-};
-
-struct ProcessStatistics {
-    // Keep this in sync with /proc/all.
-    // From the kernel side:
-    pid_t pid;
-    pid_t pgid;
-    pid_t pgp;
-    pid_t sid;
-    uid_t uid;
-    gid_t gid;
-    pid_t ppid;
-    unsigned nfds;
-    String name;
-    String executable;
-    String tty;
-    String pledge;
-    String veil;
-    size_t amount_virtual;
-    size_t amount_resident;
-    size_t amount_shared;
-    size_t amount_dirty_private;
-    size_t amount_clean_inode;
-    size_t amount_purgeable_volatile;
-    size_t amount_purgeable_nonvolatile;
-
-    Vector<Core::ThreadStatistics> threads;
-
-    // synthetic
-    String username;
-};
-
-class ProcessStatisticsReader {
-public:
-    static Optional<HashMap<pid_t, Core::ProcessStatistics>> get_all(RefPtr<Core::File>&);
-    static Optional<HashMap<pid_t, Core::ProcessStatistics>> get_all();
-
-private:
-    static String username_from_uid(uid_t);
-    static HashMap<uid_t, String> s_usernames;
-};
-
-}
diff --git a/Libraries/LibCore/Property.cpp b/Libraries/LibCore/Property.cpp
deleted file mode 100644
index 8c6c2587c6..0000000000
--- a/Libraries/LibCore/Property.cpp
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <LibCore/Property.h>
-
-namespace Core {
-
-Property::Property(String name, Function<JsonValue()> getter, Function<bool(const JsonValue&)> setter)
-    : m_name(move(name))
-    , m_getter(move(getter))
-    , m_setter(move(setter))
-{
-}
-
-Property::~Property()
-{
-}
-
-}
diff --git a/Libraries/LibCore/Property.h b/Libraries/LibCore/Property.h
deleted file mode 100644
index aa04e833fb..0000000000
--- a/Libraries/LibCore/Property.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Function.h>
-#include <AK/JsonValue.h>
-
-namespace Core {
-
-class Property {
-    AK_MAKE_NONCOPYABLE(Property);
-
-public:
-    Property(String name, Function<JsonValue()> getter, Function<bool(const JsonValue&)> setter = nullptr);
-    ~Property();
-
-    bool set(const JsonValue& value)
-    {
-        if (!m_setter)
-            return false;
-        return m_setter(value);
-    }
-
-    JsonValue get() const { return m_getter(); }
-
-    const String& name() const { return m_name; }
-    bool is_readonly() const { return !m_setter; }
-
-private:
-    String m_name;
-    Function<JsonValue()> m_getter;
-    Function<bool(const JsonValue&)> m_setter;
-};
-
-}
diff --git a/Libraries/LibCore/Socket.cpp b/Libraries/LibCore/Socket.cpp
deleted file mode 100644
index 4ced6734b1..0000000000
--- a/Libraries/LibCore/Socket.cpp
+++ /dev/null
@@ -1,236 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/ByteBuffer.h>
-#include <LibCore/Notifier.h>
-#include <LibCore/Socket.h>
-#include <arpa/inet.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <netdb.h>
-#include <netinet/in.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/socket.h>
-#include <unistd.h>
-
-//#define CSOCKET_DEBUG
-
-namespace Core {
-
-Socket::Socket(Type type, Object* parent)
-    : IODevice(parent)
-    , m_type(type)
-{
-    register_property(
-        "source_address", [this] { return m_source_address.to_string(); },
-        [](auto&) { return false; });
-
-    register_property(
-        "destination_address", [this] { return m_destination_address.to_string(); },
-        [](auto&) { return false; });
-
-    register_property(
-        "source_port", [this] { return m_source_port; },
-        [](auto&) { return false; });
-
-    register_property(
-        "destination_port", [this] { return m_destination_port; },
-        [](auto&) { return false; });
-
-    register_property(
-        "connected", [this] { return m_connected; },
-        [](auto&) { return false; });
-}
-
-Socket::~Socket()
-{
-    close();
-}
-
-bool Socket::connect(const String& hostname, int port)
-{
-    auto* hostent = gethostbyname(hostname.characters());
-    if (!hostent) {
-        dbgln("Socket::connect: Unable to resolve '{}'", hostname);
-        return false;
-    }
-
-    IPv4Address host_address((const u8*)hostent->h_addr_list[0]);
-#ifdef CSOCKET_DEBUG
-    dbg() << "Socket::connect: Resolved '" << hostname << "' to " << host_address;
-#endif
-    return connect(host_address, port);
-}
-
-void Socket::set_blocking(bool blocking)
-{
-    int flags = fcntl(fd(), F_GETFL, 0);
-    ASSERT(flags >= 0);
-    if (blocking)
-        flags = fcntl(fd(), F_SETFL, flags & ~O_NONBLOCK);
-    else
-        flags = fcntl(fd(), F_SETFL, flags | O_NONBLOCK);
-    ASSERT(flags == 0);
-}
-
-bool Socket::connect(const SocketAddress& address, int port)
-{
-    ASSERT(!is_connected());
-    ASSERT(address.type() == SocketAddress::Type::IPv4);
-#ifdef CSOCKET_DEBUG
-    dbg() << *this << " connecting to " << address << "...";
-#endif
-
-    ASSERT(port > 0 && port <= 65535);
-
-    struct sockaddr_in addr;
-    memset(&addr, 0, sizeof(addr));
-    auto ipv4_address = address.ipv4_address();
-    memcpy(&addr.sin_addr.s_addr, &ipv4_address, sizeof(IPv4Address));
-    addr.sin_family = AF_INET;
-    addr.sin_port = htons(port);
-
-    m_destination_address = address;
-    m_destination_port = port;
-
-    return common_connect((struct sockaddr*)&addr, sizeof(addr));
-}
-
-bool Socket::connect(const SocketAddress& address)
-{
-    ASSERT(!is_connected());
-    ASSERT(address.type() == SocketAddress::Type::Local);
-#ifdef CSOCKET_DEBUG
-    dbg() << *this << " connecting to " << address << "...";
-#endif
-
-    sockaddr_un saddr;
-    saddr.sun_family = AF_LOCAL;
-    auto dest_address = address.to_string();
-    bool fits = dest_address.copy_characters_to_buffer(saddr.sun_path, sizeof(saddr.sun_path));
-    if (!fits) {
-        fprintf(stderr, "Core::Socket: Failed to connect() to %s: Path is too long!\n", dest_address.characters());
-        errno = EINVAL;
-        return false;
-    }
-    m_destination_address = address;
-
-    return common_connect((const sockaddr*)&saddr, sizeof(saddr));
-}
-
-bool Socket::common_connect(const struct sockaddr* addr, socklen_t addrlen)
-{
-    auto connected = [this] {
-#ifdef CSOCKET_DEBUG
-        dbg() << *this << " connected!";
-#endif
-        if (!m_connected) {
-            m_connected = true;
-            ensure_read_notifier();
-            if (m_notifier) {
-                m_notifier->remove_from_parent();
-                m_notifier = nullptr;
-            }
-            if (on_connected)
-                on_connected();
-        }
-    };
-    int rc = ::connect(fd(), addr, addrlen);
-    if (rc < 0) {
-        if (errno == EINPROGRESS) {
-#ifdef CSOCKET_DEBUG
-            dbg() << *this << " connection in progress (EINPROGRESS)";
-#endif
-            m_notifier = Notifier::construct(fd(), Notifier::Event::Write, this);
-            m_notifier->on_ready_to_write = move(connected);
-            return true;
-        }
-        int saved_errno = errno;
-        fprintf(stderr, "Core::Socket: Failed to connect() to %s: %s\n", destination_address().to_string().characters(), strerror(saved_errno));
-        errno = saved_errno;
-        return false;
-    }
-#ifdef CSOCKET_DEBUG
-    dbg() << *this << " connected ok!";
-#endif
-    connected();
-    return true;
-}
-
-ByteBuffer Socket::receive(int max_size)
-{
-    auto buffer = read(max_size);
-    if (eof())
-        m_connected = false;
-    return buffer;
-}
-
-bool Socket::send(ReadonlyBytes data)
-{
-    ssize_t nsent = ::send(fd(), data.data(), data.size(), 0);
-    if (nsent < 0) {
-        set_error(errno);
-        return false;
-    }
-    ASSERT(static_cast<size_t>(nsent) == data.size());
-    return true;
-}
-
-void Socket::did_update_fd(int fd)
-{
-    if (fd < 0) {
-        if (m_read_notifier) {
-            m_read_notifier->remove_from_parent();
-            m_read_notifier = nullptr;
-        }
-        if (m_notifier) {
-            m_notifier->remove_from_parent();
-            m_notifier = nullptr;
-        }
-        return;
-    }
-    if (m_connected) {
-        ensure_read_notifier();
-    } else {
-        // I don't think it would be right if we updated the fd while not connected *but* while having a notifier..
-        ASSERT(!m_read_notifier);
-    }
-}
-
-void Socket::ensure_read_notifier()
-{
-    ASSERT(m_connected);
-    m_read_notifier = Notifier::construct(fd(), Notifier::Event::Read, this);
-    m_read_notifier->on_ready_to_read = [this] {
-        if (!can_read())
-            return;
-        if (on_ready_to_read)
-            on_ready_to_read();
-    };
-}
-
-}
diff --git a/Libraries/LibCore/Socket.h b/Libraries/LibCore/Socket.h
deleted file mode 100644
index fcbd2af31d..0000000000
--- a/Libraries/LibCore/Socket.h
+++ /dev/null
@@ -1,89 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Function.h>
-#include <AK/Span.h>
-#include <LibCore/IODevice.h>
-#include <LibCore/SocketAddress.h>
-
-namespace Core {
-
-class Socket : public IODevice {
-    C_OBJECT(Socket)
-public:
-    enum class Type {
-        Invalid,
-        TCP,
-        UDP,
-        Local,
-    };
-    virtual ~Socket() override;
-
-    Type type() const { return m_type; }
-
-    virtual bool connect(const String& hostname, int port);
-    bool connect(const SocketAddress&, int port);
-    bool connect(const SocketAddress&);
-
-    ByteBuffer receive(int max_size);
-    bool send(ReadonlyBytes);
-
-    bool is_connected() const { return m_connected; }
-    void set_blocking(bool blocking);
-
-    SocketAddress source_address() const { return m_source_address; }
-    int source_port() const { return m_source_port; }
-
-    SocketAddress destination_address() const { return m_destination_address; }
-    int destination_port() const { return m_destination_port; }
-
-    Function<void()> on_connected;
-    Function<void()> on_ready_to_read;
-
-protected:
-    Socket(Type, Object* parent);
-
-    SocketAddress m_source_address;
-    SocketAddress m_destination_address;
-    int m_source_port { -1 };
-    int m_destination_port { -1 };
-    bool m_connected { false };
-
-    virtual void did_update_fd(int) override;
-    virtual bool common_connect(const struct sockaddr*, socklen_t);
-
-private:
-    virtual bool open(IODevice::OpenMode) override { ASSERT_NOT_REACHED(); }
-    void ensure_read_notifier();
-
-    Type m_type { Type::Invalid };
-    RefPtr<Notifier> m_notifier;
-    RefPtr<Notifier> m_read_notifier;
-};
-
-}
diff --git a/Libraries/LibCore/SocketAddress.cpp b/Libraries/LibCore/SocketAddress.cpp
deleted file mode 100644
index d4d451a150..0000000000
--- a/Libraries/LibCore/SocketAddress.cpp
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <LibCore/SocketAddress.h>
-
-namespace Core {
-
-const LogStream& operator<<(const LogStream& stream, const SocketAddress& value)
-{
-    return stream << value.to_string();
-}
-
-}
diff --git a/Libraries/LibCore/SocketAddress.h b/Libraries/LibCore/SocketAddress.h
deleted file mode 100644
index 717f4e8fd3..0000000000
--- a/Libraries/LibCore/SocketAddress.h
+++ /dev/null
@@ -1,115 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/IPv4Address.h>
-#include <arpa/inet.h>
-#include <netinet/in.h>
-#include <string.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-
-namespace Core {
-
-class SocketAddress {
-public:
-    enum class Type {
-        Invalid,
-        IPv4,
-        Local
-    };
-
-    SocketAddress() { }
-    SocketAddress(const IPv4Address& address)
-        : m_type(Type::IPv4)
-        , m_ipv4_address(address)
-    {
-    }
-
-    SocketAddress(const IPv4Address& address, u16 port)
-        : m_type(Type::IPv4)
-        , m_ipv4_address(address)
-        , m_port(port)
-    {
-    }
-
-    static SocketAddress local(const String& address)
-    {
-        SocketAddress addr;
-        addr.m_type = Type::Local;
-        addr.m_local_address = address;
-        return addr;
-    }
-
-    Type type() const { return m_type; }
-    bool is_valid() const { return m_type != Type::Invalid; }
-    IPv4Address ipv4_address() const { return m_ipv4_address; }
-    u16 port() const { return m_port; }
-
-    String to_string() const
-    {
-        switch (m_type) {
-        case Type::IPv4:
-            return String::format("%s:%d", m_ipv4_address.to_string().characters(), m_port);
-        case Type::Local:
-            return m_local_address;
-        default:
-            return "[SocketAddress]";
-        }
-    }
-
-    Optional<sockaddr_un> to_sockaddr_un() const
-    {
-        ASSERT(type() == Type::Local);
-        sockaddr_un address;
-        address.sun_family = AF_LOCAL;
-        bool fits = m_local_address.copy_characters_to_buffer(address.sun_path, sizeof(address.sun_path));
-        if (!fits)
-            return {};
-        return address;
-    }
-
-    sockaddr_in to_sockaddr_in() const
-    {
-        ASSERT(type() == Type::IPv4);
-        sockaddr_in address {};
-        address.sin_family = AF_INET;
-        address.sin_addr.s_addr = m_ipv4_address.to_in_addr_t();
-        address.sin_port = htons(m_port);
-        return address;
-    }
-
-private:
-    Type m_type { Type::Invalid };
-    IPv4Address m_ipv4_address;
-    u16 m_port { 0 };
-    String m_local_address;
-};
-
-const LogStream& operator<<(const LogStream&, const SocketAddress&);
-
-}
diff --git a/Libraries/LibCore/StandardPaths.cpp b/Libraries/LibCore/StandardPaths.cpp
deleted file mode 100644
index 3ed9197835..0000000000
--- a/Libraries/LibCore/StandardPaths.cpp
+++ /dev/null
@@ -1,77 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/LexicalPath.h>
-#include <AK/String.h>
-#include <AK/StringBuilder.h>
-#include <LibCore/StandardPaths.h>
-#include <pwd.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-namespace Core {
-
-String StandardPaths::home_directory()
-{
-    if (auto* home_env = getenv("HOME"))
-        return LexicalPath::canonicalized_path(home_env);
-
-    auto* pwd = getpwuid(getuid());
-    String path = pwd ? pwd->pw_dir : "/";
-    endpwent();
-    return LexicalPath::canonicalized_path(path);
-}
-
-String StandardPaths::desktop_directory()
-{
-    StringBuilder builder;
-    builder.append(home_directory());
-    builder.append("/Desktop");
-    return LexicalPath::canonicalized_path(builder.to_string());
-}
-
-String StandardPaths::downloads_directory()
-{
-    StringBuilder builder;
-    builder.append(home_directory());
-    builder.append("/Downloads");
-    return LexicalPath::canonicalized_path(builder.to_string());
-}
-
-String StandardPaths::config_directory()
-{
-    StringBuilder builder;
-    builder.append(home_directory());
-    builder.append("/.config");
-    return LexicalPath::canonicalized_path(builder.to_string());
-}
-
-String StandardPaths::tempfile_directory()
-{
-    return "/tmp";
-}
-
-}
diff --git a/Libraries/LibCore/StandardPaths.h b/Libraries/LibCore/StandardPaths.h
deleted file mode 100644
index 51346250c2..0000000000
--- a/Libraries/LibCore/StandardPaths.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Forward.h>
-
-namespace Core {
-
-class StandardPaths {
-public:
-    static String home_directory();
-    static String desktop_directory();
-    static String downloads_directory();
-    static String tempfile_directory();
-    static String config_directory();
-};
-
-}
diff --git a/Libraries/LibCore/SyscallUtils.h b/Libraries/LibCore/SyscallUtils.h
deleted file mode 100644
index 1c24efd9c2..0000000000
--- a/Libraries/LibCore/SyscallUtils.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/LogStream.h>
-#include <AK/StdLibExtras.h>
-#include <errno.h>
-#include <string.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-namespace Core {
-
-template<typename Syscall, class... Args>
-inline int safe_syscall(Syscall syscall, Args&&... args)
-{
-    for (;;) {
-        int sysret = syscall(forward<Args>(args)...);
-        if (sysret == -1) {
-#ifdef SAFE_SYSCALL_DEBUG
-            int saved_errno = errno;
-            dbg() << "Core::safe_syscall: " << sysret << " (" << saved_errno << ": " << strerror(saved_errno) << ")";
-#endif
-            if (errno == EINTR)
-                continue;
-            ASSERT_NOT_REACHED();
-        }
-        return sysret;
-    }
-}
-
-}
diff --git a/Libraries/LibCore/TCPServer.cpp b/Libraries/LibCore/TCPServer.cpp
deleted file mode 100644
index 0ef241b717..0000000000
--- a/Libraries/LibCore/TCPServer.cpp
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/IPv4Address.h>
-#include <AK/Types.h>
-#include <LibCore/Notifier.h>
-#include <LibCore/TCPServer.h>
-#include <LibCore/TCPSocket.h>
-#include <stdio.h>
-#include <sys/socket.h>
-
-#ifndef SOCK_NONBLOCK
-#    include <sys/ioctl.h>
-#endif
-namespace Core {
-
-TCPServer::TCPServer(Object* parent)
-    : Object(parent)
-{
-#ifdef SOCK_NONBLOCK
-    m_fd = socket(AF_INET, SOCK_STREAM | SOCK_NONBLOCK | SOCK_CLOEXEC, 0);
-#else
-    m_fd = socket(AF_INET, SOCK_STREAM, 0);
-    int option = 1;
-    ioctl(m_fd, FIONBIO, &option);
-    fcntl(m_fd, F_SETFD, FD_CLOEXEC);
-#endif
-    ASSERT(m_fd >= 0);
-}
-
-TCPServer::~TCPServer()
-{
-    ::close(m_fd);
-}
-
-bool TCPServer::listen(const IPv4Address& address, u16 port)
-{
-    if (m_listening)
-        return false;
-
-    auto socket_address = SocketAddress(address, port);
-    auto in = socket_address.to_sockaddr_in();
-    if (::bind(m_fd, (const sockaddr*)&in, sizeof(in)) < 0) {
-        perror("TCPServer::listen: bind");
-        return false;
-    }
-
-    if (::listen(m_fd, 5) < 0) {
-        perror("TCPServer::listen: listen");
-        return false;
-    }
-    m_listening = true;
-
-    m_notifier = Notifier::construct(m_fd, Notifier::Event::Read, this);
-    m_notifier->on_ready_to_read = [this] {
-        if (on_ready_to_accept)
-            on_ready_to_accept();
-    };
-    return true;
-}
-
-RefPtr<TCPSocket> TCPServer::accept()
-{
-    ASSERT(m_listening);
-    sockaddr_in in;
-    socklen_t in_size = sizeof(in);
-    int accepted_fd = ::accept(m_fd, (sockaddr*)&in, &in_size);
-    if (accepted_fd < 0) {
-        perror("accept");
-        return nullptr;
-    }
-
-    return TCPSocket::construct(accepted_fd);
-}
-
-Optional<IPv4Address> TCPServer::local_address() const
-{
-    if (m_fd == -1)
-        return {};
-
-    sockaddr_in address;
-    socklen_t len = sizeof(address);
-    if (getsockname(m_fd, (sockaddr*)&address, &len) != 0)
-        return {};
-
-    return IPv4Address(address.sin_addr.s_addr);
-}
-
-Optional<u16> TCPServer::local_port() const
-{
-    if (m_fd == -1)
-        return {};
-
-    sockaddr_in address;
-    socklen_t len = sizeof(address);
-    if (getsockname(m_fd, (sockaddr*)&address, &len) != 0)
-        return {};
-
-    return ntohs(address.sin_port);
-}
-
-}
diff --git a/Libraries/LibCore/TCPServer.h b/Libraries/LibCore/TCPServer.h
deleted file mode 100644
index b516ec1500..0000000000
--- a/Libraries/LibCore/TCPServer.h
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/IPv4Address.h>
-#include <LibCore/Notifier.h>
-#include <LibCore/Object.h>
-
-namespace Core {
-
-class TCPServer : public Object {
-    C_OBJECT(TCPServer)
-public:
-    virtual ~TCPServer() override;
-
-    bool is_listening() const { return m_listening; }
-    bool listen(const IPv4Address& address, u16 port);
-
-    RefPtr<TCPSocket> accept();
-
-    Optional<IPv4Address> local_address() const;
-    Optional<u16> local_port() const;
-
-    Function<void()> on_ready_to_accept;
-
-private:
-    explicit TCPServer(Object* parent = nullptr);
-
-    int m_fd { -1 };
-    bool m_listening { false };
-    RefPtr<Notifier> m_notifier;
-};
-
-}
diff --git a/Libraries/LibCore/TCPSocket.cpp b/Libraries/LibCore/TCPSocket.cpp
deleted file mode 100644
index 6029a82432..0000000000
--- a/Libraries/LibCore/TCPSocket.cpp
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <LibCore/TCPSocket.h>
-#include <errno.h>
-#include <sys/socket.h>
-
-#ifndef SOCK_NONBLOCK
-#    include <sys/ioctl.h>
-#endif
-
-namespace Core {
-
-TCPSocket::TCPSocket(int fd, Object* parent)
-    : Socket(Socket::Type::TCP, parent)
-{
-    // NOTE: This constructor is used by TCPServer::accept(), so the socket is already connected.
-    m_connected = true;
-    set_fd(fd);
-    set_mode(IODevice::ReadWrite);
-    set_error(0);
-}
-
-TCPSocket::TCPSocket(Object* parent)
-    : Socket(Socket::Type::TCP, parent)
-{
-#ifdef SOCK_NONBLOCK
-    int fd = socket(AF_INET, SOCK_STREAM | SOCK_NONBLOCK, 0);
-#else
-    int fd = socket(AF_INET, SOCK_STREAM, 0);
-    int option = 1;
-    ioctl(fd, FIONBIO, &option);
-#endif
-    if (fd < 0) {
-        set_error(errno);
-    } else {
-        set_fd(fd);
-        set_mode(IODevice::ReadWrite);
-        set_error(0);
-    }
-}
-
-TCPSocket::~TCPSocket()
-{
-}
-
-}
diff --git a/Libraries/LibCore/TCPSocket.h b/Libraries/LibCore/TCPSocket.h
deleted file mode 100644
index 8bdd1ae70c..0000000000
--- a/Libraries/LibCore/TCPSocket.h
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Badge.h>
-#include <LibCore/Socket.h>
-
-namespace Core {
-
-class TCPSocket final : public Socket {
-    C_OBJECT(TCPSocket)
-public:
-    virtual ~TCPSocket() override;
-
-private:
-    TCPSocket(int fd, Object* parent = nullptr);
-    explicit TCPSocket(Object* parent = nullptr);
-};
-
-}
diff --git a/Libraries/LibCore/Timer.cpp b/Libraries/LibCore/Timer.cpp
deleted file mode 100644
index aa0a0cb17d..0000000000
--- a/Libraries/LibCore/Timer.cpp
+++ /dev/null
@@ -1,96 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <LibCore/Timer.h>
-
-namespace Core {
-
-Timer::Timer(Object* parent)
-    : Object(parent)
-{
-}
-
-Timer::Timer(int interval, Function<void()>&& timeout_handler, Object* parent)
-    : Object(parent)
-    , on_timeout(move(timeout_handler))
-{
-    start(interval);
-}
-
-Timer::~Timer()
-{
-}
-
-void Timer::start()
-{
-    start(m_interval);
-}
-
-void Timer::start(int interval)
-{
-    if (m_active)
-        return;
-    m_interval = interval;
-    start_timer(interval);
-    m_active = true;
-}
-
-void Timer::restart()
-{
-    restart(m_interval);
-}
-
-void Timer::restart(int interval)
-{
-    if (m_active)
-        stop();
-    start(interval);
-}
-
-void Timer::stop()
-{
-    if (!m_active)
-        return;
-    stop_timer();
-    m_active = false;
-}
-
-void Timer::timer_event(TimerEvent&)
-{
-    if (m_single_shot)
-        stop();
-    else {
-        if (m_interval_dirty) {
-            stop();
-            start(m_interval);
-        }
-    }
-
-    if (on_timeout)
-        on_timeout();
-}
-
-}
diff --git a/Libraries/LibCore/Timer.h b/Libraries/LibCore/Timer.h
deleted file mode 100644
index 04f41e39a0..0000000000
--- a/Libraries/LibCore/Timer.h
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Function.h>
-#include <LibCore/Object.h>
-
-namespace Core {
-
-class Timer final : public Object {
-    C_OBJECT(Timer);
-
-public:
-    static NonnullRefPtr<Timer> create_single_shot(int interval, Function<void()>&& timeout_handler, Object* parent = nullptr)
-    {
-        auto timer = adopt(*new Timer(interval, move(timeout_handler), parent));
-        timer->set_single_shot(true);
-        timer->stop();
-        return timer;
-    }
-
-    virtual ~Timer() override;
-
-    void start();
-    void start(int interval);
-    void restart();
-    void restart(int interval);
-    void stop();
-
-    bool is_active() const { return m_active; }
-    int interval() const { return m_interval; }
-    void set_interval(int interval)
-    {
-        if (m_interval == interval)
-            return;
-        m_interval = interval;
-        m_interval_dirty = true;
-    }
-
-    bool is_single_shot() const { return m_single_shot; }
-    void set_single_shot(bool single_shot) { m_single_shot = single_shot; }
-
-    Function<void()> on_timeout;
-
-private:
-    explicit Timer(Object* parent = nullptr);
-    Timer(int interval, Function<void()>&& timeout_handler, Object* parent = nullptr);
-
-    virtual void timer_event(TimerEvent&) override;
-
-    bool m_active { false };
-    bool m_single_shot { false };
-    bool m_interval_dirty { false };
-    int m_interval { 0 };
-};
-
-}
diff --git a/Libraries/LibCore/UDPServer.cpp b/Libraries/LibCore/UDPServer.cpp
deleted file mode 100644
index 6716865e6b..0000000000
--- a/Libraries/LibCore/UDPServer.cpp
+++ /dev/null
@@ -1,123 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/IPv4Address.h>
-#include <AK/Types.h>
-#include <LibCore/Notifier.h>
-#include <LibCore/UDPServer.h>
-#include <LibCore/UDPSocket.h>
-#include <stdio.h>
-#include <unistd.h>
-
-#ifndef SOCK_NONBLOCK
-#    include <sys/ioctl.h>
-#endif
-
-namespace Core {
-
-UDPServer::UDPServer(Object* parent)
-    : Object(parent)
-{
-#ifdef SOCK_NONBLOCK
-    m_fd = socket(AF_INET, SOCK_DGRAM | SOCK_NONBLOCK | SOCK_CLOEXEC, 0);
-#else
-    m_fd = socket(AF_INET, SOCK_DGRAM, 0);
-    int option = 1;
-    ioctl(m_fd, FIONBIO, &option);
-    fcntl(m_fd, F_SETFD, FD_CLOEXEC);
-#endif
-    ASSERT(m_fd >= 0);
-}
-
-UDPServer::~UDPServer()
-{
-    ::close(m_fd);
-}
-
-bool UDPServer::bind(const IPv4Address& address, u16 port)
-{
-    if (m_bound)
-        return false;
-
-    auto saddr = SocketAddress(address, port);
-    auto in = saddr.to_sockaddr_in();
-
-    if (::bind(m_fd, (const sockaddr*)&in, sizeof(in)) != 0) {
-        perror("UDPServer::bind");
-        return false;
-    }
-
-    m_bound = true;
-
-    m_notifier = Notifier::construct(m_fd, Notifier::Event::Read, this);
-    m_notifier->on_ready_to_read = [this] {
-        if (on_ready_to_receive)
-            on_ready_to_receive();
-    };
-    return true;
-}
-
-ByteBuffer UDPServer::receive(size_t size, sockaddr_in& in)
-{
-    auto buf = ByteBuffer::create_uninitialized(size);
-    socklen_t in_len = sizeof(in);
-    ssize_t rlen = ::recvfrom(m_fd, buf.data(), size, 0, (sockaddr*)&in, &in_len);
-    if (rlen < 0) {
-        dbgln("recvfrom: {}", strerror(errno));
-        return {};
-    }
-
-    buf.trim(rlen);
-    return buf;
-}
-
-Optional<IPv4Address> UDPServer::local_address() const
-{
-    if (m_fd == -1)
-        return {};
-
-    sockaddr_in address;
-    socklen_t len = sizeof(address);
-    if (getsockname(m_fd, (sockaddr*)&address, &len) != 0)
-        return {};
-
-    return IPv4Address(address.sin_addr.s_addr);
-}
-
-Optional<u16> UDPServer::local_port() const
-{
-    if (m_fd == -1)
-        return {};
-
-    sockaddr_in address;
-    socklen_t len = sizeof(address);
-    if (getsockname(m_fd, (sockaddr*)&address, &len) != 0)
-        return {};
-
-    return ntohs(address.sin_port);
-}
-
-}
diff --git a/Libraries/LibCore/UDPServer.h b/Libraries/LibCore/UDPServer.h
deleted file mode 100644
index 29dfd29d60..0000000000
--- a/Libraries/LibCore/UDPServer.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/ByteBuffer.h>
-#include <AK/Forward.h>
-#include <AK/Function.h>
-#include <LibCore/Forward.h>
-#include <LibCore/Object.h>
-#include <LibCore/SocketAddress.h>
-
-namespace Core {
-
-class UDPServer : public Object {
-    C_OBJECT(UDPServer)
-public:
-    virtual ~UDPServer() override;
-
-    bool is_bound() const { return m_bound; }
-
-    bool bind(const IPv4Address& address, u16 port);
-    ByteBuffer receive(size_t size, sockaddr_in& from);
-    ByteBuffer receive(size_t size)
-    {
-        struct sockaddr_in saddr;
-        return receive(size, saddr);
-    };
-
-    Optional<IPv4Address> local_address() const;
-    Optional<u16> local_port() const;
-
-    Function<void()> on_ready_to_receive;
-
-private:
-    explicit UDPServer(Object* parent = nullptr);
-
-    int m_fd { -1 };
-    bool m_bound { false };
-    RefPtr<Notifier> m_notifier;
-};
-
-}
diff --git a/Libraries/LibCore/UDPSocket.cpp b/Libraries/LibCore/UDPSocket.cpp
deleted file mode 100644
index c319ac3dc1..0000000000
--- a/Libraries/LibCore/UDPSocket.cpp
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <LibCore/UDPSocket.h>
-#include <errno.h>
-#include <sys/socket.h>
-
-#ifndef SOCK_NONBLOCK
-#    include <sys/ioctl.h>
-#endif
-
-namespace Core {
-
-UDPSocket::UDPSocket(Object* parent)
-    : Socket(Socket::Type::UDP, parent)
-{
-#ifdef SOCK_NONBLOCK
-    int fd = socket(AF_INET, SOCK_DGRAM | SOCK_NONBLOCK, 0);
-#else
-    int fd = socket(AF_INET, SOCK_DGRAM, 0);
-    int option = 1;
-    ioctl(fd, FIONBIO, &option);
-#endif
-
-    if (fd < 0) {
-        set_error(errno);
-    } else {
-        set_fd(fd);
-        set_mode(IODevice::ReadWrite);
-        set_error(0);
-    }
-}
-
-UDPSocket::~UDPSocket()
-{
-}
-
-}
diff --git a/Libraries/LibCore/UDPSocket.h b/Libraries/LibCore/UDPSocket.h
deleted file mode 100644
index 3bb65d9831..0000000000
--- a/Libraries/LibCore/UDPSocket.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <LibCore/Socket.h>
-
-namespace Core {
-
-class UDPSocket final : public Socket {
-    C_OBJECT(UDPSocket)
-public:
-    virtual ~UDPSocket() override;
-
-private:
-    explicit UDPSocket(Object* parent = nullptr);
-};
-
-}
diff --git a/Libraries/LibCore/puff.cpp b/Libraries/LibCore/puff.cpp
deleted file mode 100644
index c6c90d7142..0000000000
--- a/Libraries/LibCore/puff.cpp
+++ /dev/null
@@ -1,840 +0,0 @@
-/*
- * puff.c
- * Copyright (C) 2002-2013 Mark Adler
- * For conditions of distribution and use, see copyright notice in puff.h
- * version 2.3, 21 Jan 2013
- *
- * puff.c is a simple inflate written to be an unambiguous way to specify the
- * deflate format.  It is not written for speed but rather simplicity.  As a
- * side benefit, this code might actually be useful when small code is more
- * important than speed, such as bootstrap applications.  For typical deflate
- * data, zlib's inflate() is about four times as fast as puff().  zlib's
- * inflate compiles to around 20K on my machine, whereas puff.c compiles to
- * around 4K on my machine (a PowerPC using GNU cc).  If the faster decode()
- * function here is used, then puff() is only twice as slow as zlib's
- * inflate().
- *
- * All dynamically allocated memory comes from the stack.  The stack required
- * is less than 2K bytes.  This code is compatible with 16-bit int's and
- * assumes that long's are at least 32 bits.  puff.c uses the short data type,
- * assumed to be 16 bits, for arrays in order to conserve memory.  The code
- * works whether integers are stored big endian or little endian.
- *
- * In the comments below are "Format notes" that describe the inflate process
- * and document some of the less obvious aspects of the format.  This source
- * code is meant to supplement RFC 1951, which formally describes the deflate
- * format:
- *
- *    http://www.zlib.org/rfc-deflate.html
- */
-
-/*
- * Change history:
- *
- * 1.0  10 Feb 2002     - First version
- * 1.1  17 Feb 2002     - Clarifications of some comments and notes
- *                      - Update puff() dest and source pointers on negative
- *                        errors to facilitate debugging deflators
- *                      - Remove longest from struct huffman -- not needed
- *                      - Simplify offs[] index in construct()
- *                      - Add input size and checking, using longjmp() to
- *                        maintain easy readability
- *                      - Use short data type for large arrays
- *                      - Use pointers instead of long to specify source and
- *                        destination sizes to avoid arbitrary 4 GB limits
- * 1.2  17 Mar 2002     - Add faster version of decode(), doubles speed (!),
- *                        but leave simple version for readabilty
- *                      - Make sure invalid distances detected if pointers
- *                        are 16 bits
- *                      - Fix fixed codes table error
- *                      - Provide a scanning mode for determining size of
- *                        uncompressed data
- * 1.3  20 Mar 2002     - Go back to lengths for puff() parameters [Gailly]
- *                      - Add a puff.h file for the interface
- *                      - Add braces in puff() for else do [Gailly]
- *                      - Use indexes instead of pointers for readability
- * 1.4  31 Mar 2002     - Simplify construct() code set check
- *                      - Fix some comments
- *                      - Add FIXLCODES #define
- * 1.5   6 Apr 2002     - Minor comment fixes
- * 1.6   7 Aug 2002     - Minor format changes
- * 1.7   3 Mar 2003     - Added test code for distribution
- *                      - Added zlib-like license
- * 1.8   9 Jan 2004     - Added some comments on no distance codes case
- * 1.9  21 Feb 2008     - Fix bug on 16-bit integer architectures [Pohland]
- *                      - Catch missing end-of-block symbol error
- * 2.0  25 Jul 2008     - Add #define to permit distance too far back
- *                      - Add option in TEST code for puff to write the data
- *                      - Add option in TEST code to skip input bytes
- *                      - Allow TEST code to read from piped stdin
- * 2.1   4 Apr 2010     - Avoid variable initialization for happier compilers
- *                      - Avoid unsigned comparisons for even happier compilers
- * 2.2  25 Apr 2010     - Fix bug in variable initializations [Oberhumer]
- *                      - Add const where appropriate [Oberhumer]
- *                      - Split if's and ?'s for coverage testing
- *                      - Break out test code to separate file
- *                      - Move NIL to puff.h
- *                      - Allow incomplete code only if single code length is 1
- *                      - Add full code coverage test to Makefile
- * 2.3  21 Jan 2013     - Check for invalid code length codes in dynamic blocks
- */
-
-#include <setjmp.h>             /* for setjmp(), longjmp(), and jmp_buf */
-#include "puff.h"               /* prototype for puff() */
-
-#define local static            /* for local function definitions */
-
-/*
- * Maximums for allocations and loops.  It is not useful to change these --
- * they are fixed by the deflate format.
- */
-#define MAXBITS 15              /* maximum bits in a code */
-#define MAXLCODES 286           /* maximum number of literal/length codes */
-#define MAXDCODES 30            /* maximum number of distance codes */
-#define MAXCODES (MAXLCODES+MAXDCODES)  /* maximum codes lengths to read */
-#define FIXLCODES 288           /* number of fixed literal/length codes */
-
-/* input and output state */
-struct state {
-    /* output state */
-    unsigned char *out;         /* output buffer */
-    unsigned long outlen;       /* available space at out */
-    unsigned long outcnt;       /* bytes written to out so far */
-
-    /* input state */
-    const unsigned char *in;    /* input buffer */
-    unsigned long inlen;        /* available input at in */
-    unsigned long incnt;        /* bytes read so far */
-    int bitbuf;                 /* bit buffer */
-    int bitcnt;                 /* number of bits in bit buffer */
-
-    /* input limit error return state for bits() and decode() */
-    jmp_buf env;
-};
-
-/*
- * Return need bits from the input stream.  This always leaves less than
- * eight bits in the buffer.  bits() works properly for need == 0.
- *
- * Format notes:
- *
- * - Bits are stored in bytes from the least significant bit to the most
- *   significant bit.  Therefore bits are dropped from the bottom of the bit
- *   buffer, using shift right, and new bytes are appended to the top of the
- *   bit buffer, using shift left.
- */
-local int bits(struct state *s, int need)
-{
-    long val;           /* bit accumulator (can use up to 20 bits) */
-
-    /* load at least need bits into val */
-    val = s->bitbuf;
-    while (s->bitcnt < need) {
-        if (s->incnt == s->inlen)
-            longjmp(s->env, 1);         /* out of input */
-        val |= (long)(s->in[s->incnt++]) << s->bitcnt;  /* load eight bits */
-        s->bitcnt += 8;
-    }
-
-    /* drop need bits and update buffer, always zero to seven bits left */
-    s->bitbuf = (int)(val >> need);
-    s->bitcnt -= need;
-
-    /* return need bits, zeroing the bits above that */
-    return (int)(val & ((1L << need) - 1));
-}
-
-/*
- * Process a stored block.
- *
- * Format notes:
- *
- * - After the two-bit stored block type (00), the stored block length and
- *   stored bytes are byte-aligned for fast copying.  Therefore any leftover
- *   bits in the byte that has the last bit of the type, as many as seven, are
- *   discarded.  The value of the discarded bits are not defined and should not
- *   be checked against any expectation.
- *
- * - The second inverted copy of the stored block length does not have to be
- *   checked, but it's probably a good idea to do so anyway.
- *
- * - A stored block can have zero length.  This is sometimes used to byte-align
- *   subsets of the compressed data for random access or partial recovery.
- */
-local int stored(struct state *s)
-{
-    unsigned len;       /* length of stored block */
-
-    /* discard leftover bits from current byte (assumes s->bitcnt < 8) */
-    s->bitbuf = 0;
-    s->bitcnt = 0;
-
-    /* get length and check against its one's complement */
-    if (s->incnt + 4 > s->inlen)
-        return 2;                               /* not enough input */
-    len = s->in[s->incnt++];
-    len |= s->in[s->incnt++] << 8;
-    if (s->in[s->incnt++] != (~len & 0xff) ||
-        s->in[s->incnt++] != ((~len >> 8) & 0xff))
-        return -2;                              /* didn't match complement! */
-
-    /* copy len bytes from in to out */
-    if (s->incnt + len > s->inlen)
-        return 2;                               /* not enough input */
-    if (s->out != NIL) {
-        if (s->outcnt + len > s->outlen)
-            return 1;                           /* not enough output space */
-        while (len--)
-            s->out[s->outcnt++] = s->in[s->incnt++];
-    }
-    else {                                      /* just scanning */
-        s->outcnt += len;
-        s->incnt += len;
-    }
-
-    /* done with a valid stored block */
-    return 0;
-}
-
-/*
- * Huffman code decoding tables.  count[1..MAXBITS] is the number of symbols of
- * each length, which for a canonical code are stepped through in order.
- * symbol[] are the symbol values in canonical order, where the number of
- * entries is the sum of the counts in count[].  The decoding process can be
- * seen in the function decode() below.
- */
-struct huffman {
-    short *count;       /* number of symbols of each length */
-    short *symbol;      /* canonically ordered symbols */
-};
-
-/*
- * Decode a code from the stream s using huffman table h.  Return the symbol or
- * a negative value if there is an error.  If all of the lengths are zero, i.e.
- * an empty code, or if the code is incomplete and an invalid code is received,
- * then -10 is returned after reading MAXBITS bits.
- *
- * Format notes:
- *
- * - The codes as stored in the compressed data are bit-reversed relative to
- *   a simple integer ordering of codes of the same lengths.  Hence below the
- *   bits are pulled from the compressed data one at a time and used to
- *   build the code value reversed from what is in the stream in order to
- *   permit simple integer comparisons for decoding.  A table-based decoding
- *   scheme (as used in zlib) does not need to do this reversal.
- *
- * - The first code for the shortest length is all zeros.  Subsequent codes of
- *   the same length are simply integer increments of the previous code.  When
- *   moving up a length, a zero bit is appended to the code.  For a complete
- *   code, the last code of the longest length will be all ones.
- *
- * - Incomplete codes are handled by this decoder, since they are permitted
- *   in the deflate format.  See the format notes for fixed() and dynamic().
- */
-#ifdef SLOW
-local int decode(struct state *s, const struct huffman *h)
-{
-    int len;            /* current number of bits in code */
-    int code;           /* len bits being decoded */
-    int first;          /* first code of length len */
-    int count;          /* number of codes of length len */
-    int index;          /* index of first code of length len in symbol table */
-
-    code = first = index = 0;
-    for (len = 1; len <= MAXBITS; len++) {
-        code |= bits(s, 1);             /* get next bit */
-        count = h->count[len];
-        if (code - count < first)       /* if length len, return symbol */
-            return h->symbol[index + (code - first)];
-        index += count;                 /* else update for next length */
-        first += count;
-        first <<= 1;
-        code <<= 1;
-    }
-    return -10;                         /* ran out of codes */
-}
-
-/*
- * A faster version of decode() for real applications of this code.   It's not
- * as readable, but it makes puff() twice as fast.  And it only makes the code
- * a few percent larger.
- */
-#else /* !SLOW */
-local int decode(struct state *s, const struct huffman *h)
-{
-    int len;            /* current number of bits in code */
-    int code;           /* len bits being decoded */
-    int first;          /* first code of length len */
-    int count;          /* number of codes of length len */
-    int index;          /* index of first code of length len in symbol table */
-    int bitbuf;         /* bits from stream */
-    int left;           /* bits left in next or left to process */
-    short *next;        /* next number of codes */
-
-    bitbuf = s->bitbuf;
-    left = s->bitcnt;
-    code = first = index = 0;
-    len = 1;
-    next = h->count + 1;
-    while (1) {
-        while (left--) {
-            code |= bitbuf & 1;
-            bitbuf >>= 1;
-            count = *next++;
-            if (code - count < first) { /* if length len, return symbol */
-                s->bitbuf = bitbuf;
-                s->bitcnt = (s->bitcnt - len) & 7;
-                return h->symbol[index + (code - first)];
-            }
-            index += count;             /* else update for next length */
-            first += count;
-            first <<= 1;
-            code <<= 1;
-            len++;
-        }
-        left = (MAXBITS+1) - len;
-        if (left == 0)
-            break;
-        if (s->incnt == s->inlen)
-            longjmp(s->env, 1);         /* out of input */
-        bitbuf = s->in[s->incnt++];
-        if (left > 8)
-            left = 8;
-    }
-    return -10;                         /* ran out of codes */
-}
-#endif /* SLOW */
-
-/*
- * Given the list of code lengths length[0..n-1] representing a canonical
- * Huffman code for n symbols, construct the tables required to decode those
- * codes.  Those tables are the number of codes of each length, and the symbols
- * sorted by length, retaining their original order within each length.  The
- * return value is zero for a complete code set, negative for an over-
- * subscribed code set, and positive for an incomplete code set.  The tables
- * can be used if the return value is zero or positive, but they cannot be used
- * if the return value is negative.  If the return value is zero, it is not
- * possible for decode() using that table to return an error--any stream of
- * enough bits will resolve to a symbol.  If the return value is positive, then
- * it is possible for decode() using that table to return an error for received
- * codes past the end of the incomplete lengths.
- *
- * Not used by decode(), but used for error checking, h->count[0] is the number
- * of the n symbols not in the code.  So n - h->count[0] is the number of
- * codes.  This is useful for checking for incomplete codes that have more than
- * one symbol, which is an error in a dynamic block.
- *
- * Assumption: for all i in 0..n-1, 0 <= length[i] <= MAXBITS
- * This is assured by the construction of the length arrays in dynamic() and
- * fixed() and is not verified by construct().
- *
- * Format notes:
- *
- * - Permitted and expected examples of incomplete codes are one of the fixed
- *   codes and any code with a single symbol which in deflate is coded as one
- *   bit instead of zero bits.  See the format notes for fixed() and dynamic().
- *
- * - Within a given code length, the symbols are kept in ascending order for
- *   the code bits definition.
- */
-local int construct(struct huffman *h, const short *length, int n)
-{
-    int symbol;         /* current symbol when stepping through length[] */
-    int len;            /* current length when stepping through h->count[] */
-    int left;           /* number of possible codes left of current length */
-    short offs[MAXBITS+1];      /* offsets in symbol table for each length */
-
-    /* count number of codes of each length */
-    for (len = 0; len <= MAXBITS; len++)
-        h->count[len] = 0;
-    for (symbol = 0; symbol < n; symbol++)
-        (h->count[length[symbol]])++;   /* assumes lengths are within bounds */
-    if (h->count[0] == n)               /* no codes! */
-        return 0;                       /* complete, but decode() will fail */
-
-    /* check for an over-subscribed or incomplete set of lengths */
-    left = 1;                           /* one possible code of zero length */
-    for (len = 1; len <= MAXBITS; len++) {
-        left <<= 1;                     /* one more bit, double codes left */
-        left -= h->count[len];          /* deduct count from possible codes */
-        if (left < 0)
-            return left;                /* over-subscribed--return negative */
-    }                                   /* left > 0 means incomplete */
-
-    /* generate offsets into symbol table for each length for sorting */
-    offs[1] = 0;
-    for (len = 1; len < MAXBITS; len++)
-        offs[len + 1] = offs[len] + h->count[len];
-
-    /*
-     * put symbols in table sorted by length, by symbol order within each
-     * length
-     */
-    for (symbol = 0; symbol < n; symbol++)
-        if (length[symbol] != 0)
-            h->symbol[offs[length[symbol]]++] = symbol;
-
-    /* return zero for complete set, positive for incomplete set */
-    return left;
-}
-
-/*
- * Decode literal/length and distance codes until an end-of-block code.
- *
- * Format notes:
- *
- * - Compressed data that is after the block type if fixed or after the code
- *   description if dynamic is a combination of literals and length/distance
- *   pairs terminated by and end-of-block code.  Literals are simply Huffman
- *   coded bytes.  A length/distance pair is a coded length followed by a
- *   coded distance to represent a string that occurs earlier in the
- *   uncompressed data that occurs again at the current location.
- *
- * - Literals, lengths, and the end-of-block code are combined into a single
- *   code of up to 286 symbols.  They are 256 literals (0..255), 29 length
- *   symbols (257..285), and the end-of-block symbol (256).
- *
- * - There are 256 possible lengths (3..258), and so 29 symbols are not enough
- *   to represent all of those.  Lengths 3..10 and 258 are in fact represented
- *   by just a length symbol.  Lengths 11..257 are represented as a symbol and
- *   some number of extra bits that are added as an integer to the base length
- *   of the length symbol.  The number of extra bits is determined by the base
- *   length symbol.  These are in the static arrays below, lens[] for the base
- *   lengths and lext[] for the corresponding number of extra bits.
- *
- * - The reason that 258 gets its own symbol is that the longest length is used
- *   often in highly redundant files.  Note that 258 can also be coded as the
- *   base value 227 plus the maximum extra value of 31.  While a good deflate
- *   should never do this, it is not an error, and should be decoded properly.
- *
- * - If a length is decoded, including its extra bits if any, then it is
- *   followed a distance code.  There are up to 30 distance symbols.  Again
- *   there are many more possible distances (1..32768), so extra bits are added
- *   to a base value represented by the symbol.  The distances 1..4 get their
- *   own symbol, but the rest require extra bits.  The base distances and
- *   corresponding number of extra bits are below in the static arrays dist[]
- *   and dext[].
- *
- * - Literal bytes are simply written to the output.  A length/distance pair is
- *   an instruction to copy previously uncompressed bytes to the output.  The
- *   copy is from distance bytes back in the output stream, copying for length
- *   bytes.
- *
- * - Distances pointing before the beginning of the output data are not
- *   permitted.
- *
- * - Overlapped copies, where the length is greater than the distance, are
- *   allowed and common.  For example, a distance of one and a length of 258
- *   simply copies the last byte 258 times.  A distance of four and a length of
- *   twelve copies the last four bytes three times.  A simple forward copy
- *   ignoring whether the length is greater than the distance or not implements
- *   this correctly.  You should not use memcpy() since its behavior is not
- *   defined for overlapped arrays.  You should not use memmove() or bcopy()
- *   since though their behavior -is- defined for overlapping arrays, it is
- *   defined to do the wrong thing in this case.
- */
-local int codes(struct state *s,
-                const struct huffman *lencode,
-                const struct huffman *distcode)
-{
-    int symbol;         /* decoded symbol */
-    int len;            /* length for copy */
-    unsigned dist;      /* distance for copy */
-    static const short lens[29] = { /* Size base for length codes 257..285 */
-        3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
-        35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258};
-    static const short lext[29] = { /* Extra bits for length codes 257..285 */
-        0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2,
-        3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0};
-    static const short dists[30] = { /* Offset base for distance codes 0..29 */
-        1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
-        257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
-        8193, 12289, 16385, 24577};
-    static const short dext[30] = { /* Extra bits for distance codes 0..29 */
-        0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6,
-        7, 7, 8, 8, 9, 9, 10, 10, 11, 11,
-        12, 12, 13, 13};
-
-    /* decode literals and length/distance pairs */
-    do {
-        symbol = decode(s, lencode);
-        if (symbol < 0)
-            return symbol;              /* invalid symbol */
-        if (symbol < 256) {             /* literal: symbol is the byte */
-            /* write out the literal */
-            if (s->out != NIL) {
-                if (s->outcnt == s->outlen)
-                    return 1;
-                s->out[s->outcnt] = symbol;
-            }
-            s->outcnt++;
-        }
-        else if (symbol > 256) {        /* length */
-            /* get and compute length */
-            symbol -= 257;
-            if (symbol >= 29)
-                return -10;             /* invalid fixed code */
-            len = lens[symbol] + bits(s, lext[symbol]);
-
-            /* get and check distance */
-            symbol = decode(s, distcode);
-            if (symbol < 0)
-                return symbol;          /* invalid symbol */
-            dist = dists[symbol] + bits(s, dext[symbol]);
-#ifndef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
-            if (dist > s->outcnt)
-                return -11;     /* distance too far back */
-#endif
-
-            /* copy length bytes from distance bytes back */
-            if (s->out != NIL) {
-                if (s->outcnt + len > s->outlen)
-                    return 1;
-                while (len--) {
-                    s->out[s->outcnt] =
-#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
-                        dist > s->outcnt ?
-                            0 :
-#endif
-                            s->out[s->outcnt - dist];
-                    s->outcnt++;
-                }
-            }
-            else
-                s->outcnt += len;
-        }
-    } while (symbol != 256);            /* end of block symbol */
-
-    /* done with a valid fixed or dynamic block */
-    return 0;
-}
-
-/*
- * Process a fixed codes block.
- *
- * Format notes:
- *
- * - This block type can be useful for compressing small amounts of data for
- *   which the size of the code descriptions in a dynamic block exceeds the
- *   benefit of custom codes for that block.  For fixed codes, no bits are
- *   spent on code descriptions.  Instead the code lengths for literal/length
- *   codes and distance codes are fixed.  The specific lengths for each symbol
- *   can be seen in the "for" loops below.
- *
- * - The literal/length code is complete, but has two symbols that are invalid
- *   and should result in an error if received.  This cannot be implemented
- *   simply as an incomplete code since those two symbols are in the "middle"
- *   of the code.  They are eight bits long and the longest literal/length\
- *   code is nine bits.  Therefore the code must be constructed with those
- *   symbols, and the invalid symbols must be detected after decoding.
- *
- * - The fixed distance codes also have two invalid symbols that should result
- *   in an error if received.  Since all of the distance codes are the same
- *   length, this can be implemented as an incomplete code.  Then the invalid
- *   codes are detected while decoding.
- */
-local int fixed(struct state *s)
-{
-    static int virgin = 1;
-    static short lencnt[MAXBITS+1], lensym[FIXLCODES];
-    static short distcnt[MAXBITS+1], distsym[MAXDCODES];
-    static struct huffman lencode, distcode;
-
-    /* build fixed huffman tables if first call (may not be thread safe) */
-    if (virgin) {
-        int symbol;
-        short lengths[FIXLCODES];
-
-        /* construct lencode and distcode */
-        lencode.count = lencnt;
-        lencode.symbol = lensym;
-        distcode.count = distcnt;
-        distcode.symbol = distsym;
-
-        /* literal/length table */
-        for (symbol = 0; symbol < 144; symbol++)
-            lengths[symbol] = 8;
-        for (; symbol < 256; symbol++)
-            lengths[symbol] = 9;
-        for (; symbol < 280; symbol++)
-            lengths[symbol] = 7;
-        for (; symbol < FIXLCODES; symbol++)
-            lengths[symbol] = 8;
-        construct(&lencode, lengths, FIXLCODES);
-
-        /* distance table */
-        for (symbol = 0; symbol < MAXDCODES; symbol++)
-            lengths[symbol] = 5;
-        construct(&distcode, lengths, MAXDCODES);
-
-        /* do this just once */
-        virgin = 0;
-    }
-
-    /* decode data until end-of-block code */
-    return codes(s, &lencode, &distcode);
-}
-
-/*
- * Process a dynamic codes block.
- *
- * Format notes:
- *
- * - A dynamic block starts with a description of the literal/length and
- *   distance codes for that block.  New dynamic blocks allow the compressor to
- *   rapidly adapt to changing data with new codes optimized for that data.
- *
- * - The codes used by the deflate format are "canonical", which means that
- *   the actual bits of the codes are generated in an unambiguous way simply
- *   from the number of bits in each code.  Therefore the code descriptions
- *   are simply a list of code lengths for each symbol.
- *
- * - The code lengths are stored in order for the symbols, so lengths are
- *   provided for each of the literal/length symbols, and for each of the
- *   distance symbols.
- *
- * - If a symbol is not used in the block, this is represented by a zero as
- *   as the code length.  This does not mean a zero-length code, but rather
- *   that no code should be created for this symbol.  There is no way in the
- *   deflate format to represent a zero-length code.
- *
- * - The maximum number of bits in a code is 15, so the possible lengths for
- *   any code are 1..15.
- *
- * - The fact that a length of zero is not permitted for a code has an
- *   interesting consequence.  Normally if only one symbol is used for a given
- *   code, then in fact that code could be represented with zero bits.  However
- *   in deflate, that code has to be at least one bit.  So for example, if
- *   only a single distance base symbol appears in a block, then it will be
- *   represented by a single code of length one, in particular one 0 bit.  This
- *   is an incomplete code, since if a 1 bit is received, it has no meaning,
- *   and should result in an error.  So incomplete distance codes of one symbol
- *   should be permitted, and the receipt of invalid codes should be handled.
- *
- * - It is also possible to have a single literal/length code, but that code
- *   must be the end-of-block code, since every dynamic block has one.  This
- *   is not the most efficient way to create an empty block (an empty fixed
- *   block is fewer bits), but it is allowed by the format.  So incomplete
- *   literal/length codes of one symbol should also be permitted.
- *
- * - If there are only literal codes and no lengths, then there are no distance
- *   codes.  This is represented by one distance code with zero bits.
- *
- * - The list of up to 286 length/literal lengths and up to 30 distance lengths
- *   are themselves compressed using Huffman codes and run-length encoding.  In
- *   the list of code lengths, a 0 symbol means no code, a 1..15 symbol means
- *   that length, and the symbols 16, 17, and 18 are run-length instructions.
- *   Each of 16, 17, and 18 are follwed by extra bits to define the length of
- *   the run.  16 copies the last length 3 to 6 times.  17 represents 3 to 10
- *   zero lengths, and 18 represents 11 to 138 zero lengths.  Unused symbols
- *   are common, hence the special coding for zero lengths.
- *
- * - The symbols for 0..18 are Huffman coded, and so that code must be
- *   described first.  This is simply a sequence of up to 19 three-bit values
- *   representing no code (0) or the code length for that symbol (1..7).
- *
- * - A dynamic block starts with three fixed-size counts from which is computed
- *   the number of literal/length code lengths, the number of distance code
- *   lengths, and the number of code length code lengths (ok, you come up with
- *   a better name!) in the code descriptions.  For the literal/length and
- *   distance codes, lengths after those provided are considered zero, i.e. no
- *   code.  The code length code lengths are received in a permuted order (see
- *   the order[] array below) to make a short code length code length list more
- *   likely.  As it turns out, very short and very long codes are less likely
- *   to be seen in a dynamic code description, hence what may appear initially
- *   to be a peculiar ordering.
- *
- * - Given the number of literal/length code lengths (nlen) and distance code
- *   lengths (ndist), then they are treated as one long list of nlen + ndist
- *   code lengths.  Therefore run-length coding can and often does cross the
- *   boundary between the two sets of lengths.
- *
- * - So to summarize, the code description at the start of a dynamic block is
- *   three counts for the number of code lengths for the literal/length codes,
- *   the distance codes, and the code length codes.  This is followed by the
- *   code length code lengths, three bits each.  This is used to construct the
- *   code length code which is used to read the remainder of the lengths.  Then
- *   the literal/length code lengths and distance lengths are read as a single
- *   set of lengths using the code length codes.  Codes are constructed from
- *   the resulting two sets of lengths, and then finally you can start
- *   decoding actual compressed data in the block.
- *
- * - For reference, a "typical" size for the code description in a dynamic
- *   block is around 80 bytes.
- */
-local int dynamic(struct state *s)
-{
-    int nlen, ndist, ncode;             /* number of lengths in descriptor */
-    int index;                          /* index of lengths[] */
-    int err;                            /* construct() return value */
-    short lengths[MAXCODES];            /* descriptor code lengths */
-    short lencnt[MAXBITS+1], lensym[MAXLCODES];         /* lencode memory */
-    short distcnt[MAXBITS+1], distsym[MAXDCODES];       /* distcode memory */
-    struct huffman lencode, distcode;   /* length and distance codes */
-    static const short order[19] =      /* permutation of code length codes */
-        {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
-
-    /* construct lencode and distcode */
-    lencode.count = lencnt;
-    lencode.symbol = lensym;
-    distcode.count = distcnt;
-    distcode.symbol = distsym;
-
-    /* get number of lengths in each table, check lengths */
-    nlen = bits(s, 5) + 257;
-    ndist = bits(s, 5) + 1;
-    ncode = bits(s, 4) + 4;
-    if (nlen > MAXLCODES || ndist > MAXDCODES)
-        return -3;                      /* bad counts */
-
-    /* read code length code lengths (really), missing lengths are zero */
-    for (index = 0; index < ncode; index++)
-        lengths[order[index]] = bits(s, 3);
-    for (; index < 19; index++)
-        lengths[order[index]] = 0;
-
-    /* build huffman table for code lengths codes (use lencode temporarily) */
-    err = construct(&lencode, lengths, 19);
-    if (err != 0)               /* require complete code set here */
-        return -4;
-
-    /* read length/literal and distance code length tables */
-    index = 0;
-    while (index < nlen + ndist) {
-        int symbol;             /* decoded value */
-        int len;                /* last length to repeat */
-
-        symbol = decode(s, &lencode);
-        if (symbol < 0)
-            return symbol;          /* invalid symbol */
-        if (symbol < 16)                /* length in 0..15 */
-            lengths[index++] = symbol;
-        else {                          /* repeat instruction */
-            len = 0;                    /* assume repeating zeros */
-            if (symbol == 16) {         /* repeat last length 3..6 times */
-                if (index == 0)
-                    return -5;          /* no last length! */
-                len = lengths[index - 1];       /* last length */
-                symbol = 3 + bits(s, 2);
-            }
-            else if (symbol == 17)      /* repeat zero 3..10 times */
-                symbol = 3 + bits(s, 3);
-            else                        /* == 18, repeat zero 11..138 times */
-                symbol = 11 + bits(s, 7);
-            if (index + symbol > nlen + ndist)
-                return -6;              /* too many lengths! */
-            while (symbol--)            /* repeat last or zero symbol times */
-                lengths[index++] = len;
-        }
-    }
-
-    /* check for end-of-block code -- there better be one! */
-    if (lengths[256] == 0)
-        return -9;
-
-    /* build huffman table for literal/length codes */
-    err = construct(&lencode, lengths, nlen);
-    if (err && (err < 0 || nlen != lencode.count[0] + lencode.count[1]))
-        return -7;      /* incomplete code ok only for single length 1 code */
-
-    /* build huffman table for distance codes */
-    err = construct(&distcode, lengths + nlen, ndist);
-    if (err && (err < 0 || ndist != distcode.count[0] + distcode.count[1]))
-        return -8;      /* incomplete code ok only for single length 1 code */
-
-    /* decode data until end-of-block code */
-    return codes(s, &lencode, &distcode);
-}
-
-/*
- * Inflate source to dest.  On return, destlen and sourcelen are updated to the
- * size of the uncompressed data and the size of the deflate data respectively.
- * On success, the return value of puff() is zero.  If there is an error in the
- * source data, i.e. it is not in the deflate format, then a negative value is
- * returned.  If there is not enough input available or there is not enough
- * output space, then a positive error is returned.  In that case, destlen and
- * sourcelen are not updated to facilitate retrying from the beginning with the
- * provision of more input data or more output space.  In the case of invalid
- * inflate data (a negative error), the dest and source pointers are updated to
- * facilitate the debugging of deflators.
- *
- * puff() also has a mode to determine the size of the uncompressed output with
- * no output written.  For this dest must be (unsigned char *)0.  In this case,
- * the input value of *destlen is ignored, and on return *destlen is set to the
- * size of the uncompressed output.
- *
- * The return codes are:
- *
- *   2:  available inflate data did not terminate
- *   1:  output space exhausted before completing inflate
- *   0:  successful inflate
- *  -1:  invalid block type (type == 3)
- *  -2:  stored block length did not match one's complement
- *  -3:  dynamic block code description: too many length or distance codes
- *  -4:  dynamic block code description: code lengths codes incomplete
- *  -5:  dynamic block code description: repeat lengths with no first length
- *  -6:  dynamic block code description: repeat more than specified lengths
- *  -7:  dynamic block code description: invalid literal/length code lengths
- *  -8:  dynamic block code description: invalid distance code lengths
- *  -9:  dynamic block code description: missing end-of-block code
- * -10:  invalid literal/length or distance code in fixed or dynamic block
- * -11:  distance is too far back in fixed or dynamic block
- *
- * Format notes:
- *
- * - Three bits are read for each block to determine the kind of block and
- *   whether or not it is the last block.  Then the block is decoded and the
- *   process repeated if it was not the last block.
- *
- * - The leftover bits in the last byte of the deflate data after the last
- *   block (if it was a fixed or dynamic block) are undefined and have no
- *   expected values to check.
- */
-int puff(unsigned char *dest,           /* pointer to destination pointer */
-         unsigned long *destlen,        /* amount of output space */
-         const unsigned char *source,   /* pointer to source data pointer */
-         unsigned long *sourcelen)      /* amount of input available */
-{
-    struct state s;             /* input/output state */
-    int last, type;             /* block information */
-    int err;                    /* return value */
-
-    /* initialize output state */
-    s.out = dest;
-    s.outlen = *destlen;                /* ignored if dest is NIL */
-    s.outcnt = 0;
-
-    /* initialize input state */
-    s.in = source;
-    s.inlen = *sourcelen;
-    s.incnt = 0;
-    s.bitbuf = 0;
-    s.bitcnt = 0;
-
-    /* return if bits() or decode() tries to read past available input */
-    if (setjmp(s.env) != 0)             /* if came back here via longjmp() */
-        err = 2;                        /* then skip do-loop, return error */
-    else {
-        /* process blocks until last block or error */
-        do {
-            last = bits(&s, 1);         /* one if last block */
-            type = bits(&s, 2);         /* block type 0..3 */
-            err = type == 0 ?
-                    stored(&s) :
-                    (type == 1 ?
-                        fixed(&s) :
-                        (type == 2 ?
-                            dynamic(&s) :
-                            -1));       /* type == 3, invalid */
-            if (err != 0)
-                break;                  /* return with error */
-        } while (!last);
-    }
-
-    /* update the lengths and return */
-    if (err <= 0) {
-        *destlen = s.outcnt;
-        *sourcelen = s.incnt;
-    }
-    return err;
-}
diff --git a/Libraries/LibCore/puff.h b/Libraries/LibCore/puff.h
deleted file mode 100644
index 5943910403..0000000000
--- a/Libraries/LibCore/puff.h
+++ /dev/null
@@ -1,44 +0,0 @@
-#pragma once
-
-/* puff.h
-  Copyright (C) 2002-2013 Mark Adler, all rights reserved
-  version 2.3, 21 Jan 2013
-
-  This software is provided 'as-is', without any express or implied
-  warranty.  In no event will the author be held liable for any damages
-  arising from the use of this software.
-
-  Permission is granted to anyone to use this software for any purpose,
-  including commercial applications, and to alter it and redistribute it
-  freely, subject to the following restrictions:
-
-  1. The origin of this software must not be misrepresented; you must not
-     claim that you wrote the original software. If you use this software
-     in a product, an acknowledgment in the product documentation would be
-     appreciated but is not required.
-  2. Altered source versions must be plainly marked as such, and must not be
-     misrepresented as being the original software.
-  3. This notice may not be removed or altered from any source distribution.
-
-  Mark Adler    madler@alumni.caltech.edu
- */
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*
- * See puff.c for purpose and usage.
- */
-#ifndef NIL
-#    define NIL ((unsigned char*)0) /* for no output option */
-#endif
-
-int puff(unsigned char* dest,    /* pointer to destination pointer */
-    unsigned long* destlen,      /* amount of output space */
-    const unsigned char* source, /* pointer to source data pointer */
-    unsigned long* sourcelen);   /* amount of input available */
-
-#ifdef __cplusplus
-}
-#endif