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101 lines
3.8 KiB
C++
101 lines
3.8 KiB
C++
/*
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* Copyright (c) 2020, Linus Groh <mail@linusgroh.de>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <LibCore/ArgsParser.h>
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#include <LibCore/File.h>
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#include <LibCrypto/Hash/HashManager.h>
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#include <stdio.h>
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#include <unistd.h>
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int main(int argc, char** argv)
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{
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if (pledge("stdio rpath", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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auto program_name = StringView { argv[0] };
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auto hash_kind { Crypto::Hash::HashKind::None };
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if (program_name == "md5sum")
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hash_kind = Crypto::Hash::HashKind::MD5;
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else if (program_name == "sha1sum")
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hash_kind = Crypto::Hash::HashKind::SHA1;
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else if (program_name == "sha256sum")
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hash_kind = Crypto::Hash::HashKind::SHA256;
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else if (program_name == "sha512sum")
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hash_kind = Crypto::Hash::HashKind::SHA512;
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if (hash_kind == Crypto::Hash::HashKind::None) {
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fprintf(stderr, "Error: program must be executed as 'md5sum', 'sha1sum', 'sha256sum' or 'sha512sum'; got '%s'\n", argv[0]);
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exit(1);
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}
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auto hash_name = program_name.substring_view(0, program_name.length() - 3).to_string().to_uppercase();
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auto paths_help_string = String::formatted("File(s) to print {} checksum of", hash_name);
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Vector<const char*> paths;
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Core::ArgsParser args_parser;
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args_parser.add_positional_argument(paths, paths_help_string.characters(), "path", Core::ArgsParser::Required::No);
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args_parser.parse(argc, argv);
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if (paths.is_empty())
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paths.append("-");
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Crypto::Hash::Manager hash;
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hash.initialize(hash_kind);
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bool success;
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auto has_error = false;
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auto file = Core::File::construct();
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for (auto path : paths) {
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if (StringView { path } == "-") {
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success = file->open(STDIN_FILENO, Core::IODevice::OpenMode::ReadOnly, Core::File::ShouldCloseFileDescriptor::No);
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} else {
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file->set_filename(path);
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success = file->open(Core::IODevice::OpenMode::ReadOnly);
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}
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if (!success) {
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fprintf(stderr, "%s: %s: %s\n", argv[0], path, file->error_string());
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has_error = true;
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continue;
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}
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while (!file->eof() && !file->has_error())
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hash.update(file->read(PAGE_SIZE));
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auto digest = hash.digest();
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auto digest_data = digest.immutable_data();
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StringBuilder builder;
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for (size_t i = 0; i < hash.digest_size(); ++i)
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builder.appendf("%02x", digest_data[i]);
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auto hash_sum_hex = builder.build();
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printf("%s %s\n", hash_sum_hex.characters(), path);
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}
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return has_error ? 1 : 0;
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}
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