summaryrefslogtreecommitdiff
path: root/Userland/Libraries/LibWeb/Loader/ResourceLoader.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'Userland/Libraries/LibWeb/Loader/ResourceLoader.cpp')
-rw-r--r--Userland/Libraries/LibWeb/Loader/ResourceLoader.cpp235
1 files changed, 235 insertions, 0 deletions
diff --git a/Userland/Libraries/LibWeb/Loader/ResourceLoader.cpp b/Userland/Libraries/LibWeb/Loader/ResourceLoader.cpp
new file mode 100644
index 0000000000..74ec1194d4
--- /dev/null
+++ b/Userland/Libraries/LibWeb/Loader/ResourceLoader.cpp
@@ -0,0 +1,235 @@
+/*
+ * Copyright (c) 2018-2021, 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/Base64.h>
+#include <AK/JsonObject.h>
+#include <AK/SharedBuffer.h>
+#include <LibCore/EventLoop.h>
+#include <LibCore/File.h>
+#include <LibProtocol/Client.h>
+#include <LibProtocol/Download.h>
+#include <LibWeb/Loader/ContentFilter.h>
+#include <LibWeb/Loader/LoadRequest.h>
+#include <LibWeb/Loader/Resource.h>
+#include <LibWeb/Loader/ResourceLoader.h>
+
+//#define CACHE_DEBUG
+
+namespace Web {
+
+ResourceLoader& ResourceLoader::the()
+{
+ static ResourceLoader* s_the;
+ if (!s_the)
+ s_the = &ResourceLoader::construct().leak_ref();
+ return *s_the;
+}
+
+ResourceLoader::ResourceLoader()
+ : m_protocol_client(Protocol::Client::construct())
+ , m_user_agent("Mozilla/4.0 (SerenityOS; x86) LibWeb+LibJS (Not KHTML, nor Gecko) LibWeb")
+{
+}
+
+void ResourceLoader::load_sync(const URL& url, Function<void(ReadonlyBytes, const HashMap<String, String, CaseInsensitiveStringTraits>& response_headers)> success_callback, Function<void(const String&)> error_callback)
+{
+ Core::EventLoop loop;
+
+ load(
+ url,
+ [&](auto data, auto& response_headers) {
+ success_callback(data, response_headers);
+ loop.quit(0);
+ },
+ [&](auto& string) {
+ if (error_callback)
+ error_callback(string);
+ loop.quit(0);
+ });
+
+ loop.exec();
+}
+
+static HashMap<LoadRequest, NonnullRefPtr<Resource>> s_resource_cache;
+
+RefPtr<Resource> ResourceLoader::load_resource(Resource::Type type, const LoadRequest& request)
+{
+ if (!request.is_valid())
+ return nullptr;
+
+ auto it = s_resource_cache.find(request);
+ if (it != s_resource_cache.end()) {
+ if (it->value->type() != type) {
+ dbg() << "FIXME: Not using cached resource for " << request.url() << " since there's a type mismatch.";
+ } else {
+#ifdef CACHE_DEBUG
+ dbg() << "Reusing cached resource for: " << request.url();
+#endif
+ return it->value;
+ }
+ }
+
+ auto resource = Resource::create({}, type, request);
+
+ s_resource_cache.set(request, resource);
+
+ load(
+ request,
+ [=](auto data, auto& headers) {
+ const_cast<Resource&>(*resource).did_load({}, data, headers);
+ },
+ [=](auto& error) {
+ const_cast<Resource&>(*resource).did_fail({}, error);
+ });
+
+ return resource;
+}
+
+void ResourceLoader::load(const LoadRequest& request, Function<void(ReadonlyBytes, const HashMap<String, String, CaseInsensitiveStringTraits>& response_headers)> success_callback, Function<void(const String&)> error_callback)
+{
+ auto& url = request.url();
+
+ if (is_port_blocked(url.port())) {
+ dbg() << "ResourceLoader::load: Error: blocked port " << url.port() << " for URL: " << url;
+ return;
+ }
+
+ if (ContentFilter::the().is_filtered(url)) {
+ dbgln("\033[32;1mResourceLoader::load: URL was filtered! {}\033[0m", url);
+ error_callback("URL was filtered");
+ return;
+ }
+
+ if (url.protocol() == "about") {
+ dbg() << "Loading about: URL " << url;
+ deferred_invoke([success_callback = move(success_callback)](auto&) {
+ success_callback(String::empty().to_byte_buffer(), {});
+ });
+ return;
+ }
+
+ if (url.protocol() == "data") {
+ dbg() << "ResourceLoader loading a data URL with mime-type: '" << url.data_mime_type() << "', base64=" << url.data_payload_is_base64() << ", payload='" << url.data_payload() << "'";
+
+ ByteBuffer data;
+ if (url.data_payload_is_base64())
+ data = decode_base64(url.data_payload());
+ else
+ data = url.data_payload().to_byte_buffer();
+
+ deferred_invoke([data = move(data), success_callback = move(success_callback)](auto&) {
+ success_callback(data, {});
+ });
+ return;
+ }
+
+ if (url.protocol() == "file") {
+ auto f = Core::File::construct();
+ f->set_filename(url.path());
+ if (!f->open(Core::IODevice::OpenMode::ReadOnly)) {
+ dbg() << "ResourceLoader::load: Error: " << f->error_string();
+ if (error_callback)
+ error_callback(f->error_string());
+ return;
+ }
+
+ auto data = f->read_all();
+ deferred_invoke([data = move(data), success_callback = move(success_callback)](auto&) {
+ success_callback(data, {});
+ });
+ return;
+ }
+
+ if (url.protocol() == "http" || url.protocol() == "https" || url.protocol() == "gemini") {
+ HashMap<String, String> headers;
+ headers.set("User-Agent", m_user_agent);
+ headers.set("Accept-Encoding", "gzip");
+
+ for (auto& it : request.headers()) {
+ headers.set(it.key, it.value);
+ }
+
+ auto download = protocol_client().start_download(request.method(), url.to_string(), headers, request.body());
+ if (!download) {
+ if (error_callback)
+ error_callback("Failed to initiate load");
+ return;
+ }
+ download->on_buffered_download_finish = [this, success_callback = move(success_callback), error_callback = move(error_callback), download](bool success, auto, auto& response_headers, auto status_code, ReadonlyBytes payload) {
+ if (status_code.has_value() && status_code.value() >= 400 && status_code.value() <= 499) {
+ if (error_callback)
+ error_callback(String::formatted("HTTP error ({})", status_code.value()));
+ return;
+ }
+ --m_pending_loads;
+ if (on_load_counter_change)
+ on_load_counter_change();
+ if (!success) {
+ if (error_callback)
+ error_callback("HTTP load failed");
+ return;
+ }
+ deferred_invoke([download](auto&) {
+ // Clear circular reference of `download` captured by copy
+ const_cast<Protocol::Download&>(*download).on_buffered_download_finish = nullptr;
+ });
+ success_callback(payload, response_headers);
+ };
+ download->set_should_buffer_all_input(true);
+ download->on_certificate_requested = []() -> Protocol::Download::CertificateAndKey {
+ return {};
+ };
+ ++m_pending_loads;
+ if (on_load_counter_change)
+ on_load_counter_change();
+ return;
+ }
+
+ if (error_callback)
+ error_callback(String::formatted("Protocol not implemented: {}", url.protocol()));
+}
+
+void ResourceLoader::load(const URL& url, Function<void(ReadonlyBytes, const HashMap<String, String, CaseInsensitiveStringTraits>& response_headers)> success_callback, Function<void(const String&)> error_callback)
+{
+ LoadRequest request;
+ request.set_url(url);
+ load(request, move(success_callback), move(error_callback));
+}
+
+bool ResourceLoader::is_port_blocked(int port)
+{
+ int ports[] { 1, 7, 9, 11, 13, 15, 17, 19, 20, 21, 22, 23, 25, 37, 42,
+ 43, 53, 77, 79, 87, 95, 101, 102, 103, 104, 109, 110, 111, 113,
+ 115, 117, 119, 123, 135, 139, 143, 179, 389, 465, 512, 513, 514,
+ 515, 526, 530, 531, 532, 540, 556, 563, 587, 601, 636, 993, 995,
+ 2049, 3659, 4045, 6000, 6379, 6665, 6666, 6667, 6668, 6669, 9000 };
+ for (auto blocked_port : ports)
+ if (port == blocked_port)
+ return true;
+ return false;
+}
+
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 05:10:42 +0000