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/*
* Copyright (c) 2020, Linus Groh <mail@linusgroh.de>
* 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/ArgsParser.h>
#include <LibCore/File.h>
#include <LibCrypto/Hash/HashManager.h>
#include <stdio.h>
#include <unistd.h>
int main(int argc, char** argv)
{
if (pledge("stdio rpath", nullptr) < 0) {
perror("pledge");
return 1;
}
auto program_name = StringView { argv[0] };
auto hash_kind { Crypto::Hash::HashKind::None };
if (program_name == "md5sum")
hash_kind = Crypto::Hash::HashKind::MD5;
else if (program_name == "sha1sum")
hash_kind = Crypto::Hash::HashKind::SHA1;
else if (program_name == "sha256sum")
hash_kind = Crypto::Hash::HashKind::SHA256;
else if (program_name == "sha512sum")
hash_kind = Crypto::Hash::HashKind::SHA512;
if (hash_kind == Crypto::Hash::HashKind::None) {
fprintf(stderr, "Error: program must be executed as 'md5sum', 'sha1sum', 'sha256sum' or 'sha512sum'; got '%s'\n", argv[0]);
exit(1);
}
auto hash_name = program_name.substring_view(0, program_name.length() - 3).to_string().to_uppercase();
auto paths_help_string = String::format("File(s) to print %s checksum of", hash_name.characters());
Vector<const char*> paths;
Core::ArgsParser args_parser;
args_parser.add_positional_argument(paths, paths_help_string.characters(), "path", Core::ArgsParser::Required::No);
args_parser.parse(argc, argv);
if (paths.is_empty())
paths.append("-");
Crypto::Hash::Manager hash;
hash.initialize(hash_kind);
bool success;
auto has_error = false;
auto file = Core::File::construct();
for (auto path : paths) {
if (StringView { path } == "-") {
success = file->open(STDIN_FILENO, Core::IODevice::OpenMode::ReadOnly, Core::File::ShouldCloseFileDescription::No);
} else {
file->set_filename(path);
success = file->open(Core::IODevice::OpenMode::ReadOnly);
}
if (!success) {
fprintf(stderr, "%s: %s: %s\n", argv[0], path, file->error_string());
has_error = true;
continue;
}
hash.update(file->read_all());
auto digest = hash.digest();
auto digest_data = digest.immutable_data();
StringBuilder builder;
for (size_t i = 0; i < hash.digest_size(); ++i)
builder.appendf("%02x", digest_data[i]);
auto hash_sum_hex = builder.build();
printf("%s %s\n", hash_sum_hex.characters(), path);
}
return has_error ? 1 : 0;
}
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