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/*
* Copyright (c) 2021, Valtteri Koskivuori <vkoskiv@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Vector.h>
#include <LibAudio/Loader.h>
#include <LibCompress/Gzip.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/File.h>
#include <LibCore/MappedFile.h>
#include <LibCore/MimeData.h>
#include <LibCore/System.h>
#include <LibELF/Image.h>
#include <LibELF/Validation.h>
#include <LibGfx/ImageFormats/ImageDecoder.h>
#include <LibMain/Main.h>
#include <stdio.h>
#include <sys/stat.h>
#include <unistd.h>
static Optional<DeprecatedString> description_only(StringView description, StringView)
{
return description;
}
// FIXME: Ideally Gfx::ImageDecoder could tell us the image type directly.
static Optional<DeprecatedString> image_details(StringView description, StringView path)
{
auto file_or_error = Core::MappedFile::map(path);
if (file_or_error.is_error())
return {};
auto& mapped_file = *file_or_error.value();
auto mime_type = Core::guess_mime_type_based_on_filename(path);
auto image_decoder = Gfx::ImageDecoder::try_create_for_raw_bytes(mapped_file.bytes(), mime_type);
if (!image_decoder)
return {};
StringBuilder builder;
builder.appendff("{}, {} x {}", description, image_decoder->width(), image_decoder->height());
if (image_decoder->is_animated()) {
builder.appendff(", animated with {} frames that loop", image_decoder->frame_count());
int loop_count = image_decoder->loop_count();
if (loop_count == 0)
builder.appendff(" indefinitely");
else
builder.appendff(" {} {}", loop_count, loop_count == 1 ? "time" : "times");
}
return builder.to_deprecated_string();
}
static Optional<DeprecatedString> audio_details(StringView description, StringView path)
{
auto loader_or_error = Audio::Loader::create(path);
if (loader_or_error.is_error())
return {};
auto loader = loader_or_error.release_value();
StringBuilder builder;
builder.appendff("{}, {} Hz, {}-bit {}, {} samples ({} s)",
description,
loader->sample_rate(),
loader->bits_per_sample(),
loader->num_channels() == 1 ? "Mono" : "Stereo",
loader->total_samples(),
loader->total_samples() / loader->sample_rate());
auto metadata = loader->metadata();
Vector<String> metadata_parts;
if (metadata.title.has_value()) {
// FIXME: Use “pretty quotation” once our terminal fonts support these characters.
if (auto title_text = String::formatted("\"{}\"", metadata.title.value_or({})); !title_text.is_error()) {
// We intentionally discard the error, because not printing part of the metadata due to OOM is not a problem.
(void)metadata_parts.try_append(title_text.release_value());
}
}
if (metadata.album.has_value()) {
if (auto album_text = String::formatted("(Album: {})", metadata.album.value_or({})); !album_text.is_error())
(void)metadata_parts.try_append(album_text.release_value());
}
if (auto all_artists = metadata.all_artists(); !all_artists.is_error() && all_artists.value().has_value()) {
if (auto artist_text = String::formatted("by {}", all_artists.release_value().release_value()); !artist_text.is_error())
(void)metadata_parts.try_append(artist_text.release_value());
}
if (!metadata_parts.is_empty()) {
// New line for the metadata.
builder.append_code_point('\n');
builder.join(" "sv, metadata_parts);
}
return builder.to_deprecated_string();
}
static Optional<DeprecatedString> gzip_details(StringView description, StringView path)
{
auto file_or_error = Core::MappedFile::map(path);
if (file_or_error.is_error())
return {};
auto& mapped_file = *file_or_error.value();
if (!Compress::GzipDecompressor::is_likely_compressed(mapped_file.bytes()))
return {};
auto gzip_details = Compress::GzipDecompressor::describe_header(mapped_file.bytes());
if (!gzip_details.has_value())
return {};
return DeprecatedString::formatted("{}, {}", description, gzip_details.value());
}
static Optional<DeprecatedString> elf_details(StringView description, StringView path)
{
auto file_or_error = Core::MappedFile::map(path);
if (file_or_error.is_error())
return {};
auto& mapped_file = *file_or_error.value();
auto elf_data = mapped_file.bytes();
ELF::Image elf_image(elf_data);
if (!elf_image.is_valid())
return {};
StringBuilder interpreter_path_builder;
auto result_or_error = ELF::validate_program_headers(*(const ElfW(Ehdr)*)elf_data.data(), elf_data.size(), elf_data, &interpreter_path_builder);
if (result_or_error.is_error() || !result_or_error.value())
return {};
auto interpreter_path = interpreter_path_builder.string_view();
auto& header = *reinterpret_cast<const ElfW(Ehdr)*>(elf_data.data());
auto bitness = header.e_ident[EI_CLASS] == ELFCLASS64 ? "64" : "32";
auto byteorder = header.e_ident[EI_DATA] == ELFDATA2LSB ? "LSB" : "MSB";
bool is_dynamically_linked = !interpreter_path.is_empty();
DeprecatedString dynamic_section = DeprecatedString::formatted(", dynamically linked, interpreter {}", interpreter_path);
return DeprecatedString::formatted("{} {}-bit {} {}, {}, version {} ({}){}",
description,
bitness,
byteorder,
ELF::Image::object_file_type_to_string(header.e_type).value_or("(?)"sv),
ELF::Image::object_machine_type_to_string(header.e_machine).value_or("(?)"sv),
header.e_ident[EI_ABIVERSION],
ELF::Image::object_abi_type_to_string(header.e_ident[EI_OSABI]).value_or("(?)"sv),
is_dynamically_linked ? dynamic_section : "");
}
#define ENUMERATE_MIME_TYPE_DESCRIPTIONS \
__ENUMERATE_MIME_TYPE_DESCRIPTION("application/gzip"sv, "gzip compressed data"sv, gzip_details) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("application/javascript"sv, "JavaScript source"sv, description_only) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("application/json"sv, "JSON data"sv, description_only) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("application/pdf"sv, "PDF document"sv, description_only) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("application/rtf"sv, "Rich text file"sv, description_only) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("application/tar"sv, "tape archive"sv, description_only) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("application/wasm"sv, "WebAssembly bytecode"sv, description_only) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("application/x-7z-compressed"sv, "7-Zip archive"sv, description_only) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("audio/flac"sv, "FLAC audio"sv, audio_details) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("audio/midi"sv, "MIDI notes"sv, audio_details) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("audio/mpeg"sv, "MP3 audio"sv, audio_details) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("audio/qoa"sv, "Quite OK Audio"sv, audio_details) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("audio/wav"sv, "WAVE audio"sv, audio_details) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("extra/blender"sv, "Blender project file"sv, description_only) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("extra/elf"sv, "ELF"sv, elf_details) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("extra/ext"sv, "ext filesystem"sv, description_only) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("extra/iso-9660"sv, "ISO 9660 CD/DVD image"sv, description_only) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("extra/isz"sv, "Compressed ISO image"sv, description_only) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("extra/lua-bytecode"sv, "Lua bytecode"sv, description_only) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("extra/matroska"sv, "Matroska container"sv, description_only) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("extra/nes-rom"sv, "Nintendo Entertainment System ROM"sv, description_only) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("extra/qcow"sv, "qcow file"sv, description_only) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("extra/raw-zlib"sv, "raw zlib stream"sv, description_only) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("extra/sqlite"sv, "sqlite database"sv, description_only) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("extra/win-31x-compressed"sv, "Windows 3.1X compressed file"sv, description_only) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("extra/win-95-compressed"sv, "Windows 95 compressed file"sv, description_only) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("image/bmp"sv, "BMP image data"sv, image_details) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("image/gif"sv, "GIF image data"sv, image_details) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("image/jpeg"sv, "JPEG image data"sv, image_details) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("image/png"sv, "PNG image data"sv, image_details) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("image/webp"sv, "WebP image data"sv, image_details) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("image/x-portable-bitmap"sv, "PBM image data"sv, image_details) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("image/x-portable-graymap"sv, "PGM image data"sv, image_details) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("image/x-portable-pixmap"sv, "PPM image data"sv, image_details) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("image/x-qoi"sv, "QOI image data"sv, image_details) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("text/markdown"sv, "Markdown document"sv, description_only) \
__ENUMERATE_MIME_TYPE_DESCRIPTION("text/x-shellscript"sv, "POSIX shell script text executable"sv, description_only)
static Optional<DeprecatedString> get_description_from_mime_type(StringView mime, StringView path)
{
#define __ENUMERATE_MIME_TYPE_DESCRIPTION(mime_type, description, details) \
if (mime_type == mime) \
return details(description, path);
ENUMERATE_MIME_TYPE_DESCRIPTIONS;
#undef __ENUMERATE_MIME_TYPE_DESCRIPTION
return {};
}
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
TRY(Core::System::pledge("stdio rpath"));
Vector<StringView> paths;
bool flag_mime_only = false;
Core::ArgsParser args_parser;
args_parser.set_general_help("Determine type of files");
args_parser.add_option(flag_mime_only, "Only print mime type", "mime-type", 'I');
args_parser.add_positional_argument(paths, "Files to identify", "files", Core::ArgsParser::Required::Yes);
args_parser.parse(arguments);
bool all_ok = true;
// Read accounts for longest possible offset + signature we currently match against.
auto buffer = TRY(ByteBuffer::create_uninitialized(0x9006));
for (auto const& path : paths) {
auto file_or_error = Core::File::open(path, Core::File::OpenMode::Read);
if (file_or_error.is_error()) {
warnln("{}: {}", path, file_or_error.release_error());
all_ok = false;
continue;
}
auto file = file_or_error.release_value();
struct stat file_stat = TRY(Core::System::lstat(path));
auto file_size_in_bytes = file_stat.st_size;
if (S_ISDIR(file_stat.st_mode)) {
outln("{}: directory", path);
} else if (!file_size_in_bytes) {
outln("{}: empty", path);
} else {
auto bytes = TRY(file->read_some(buffer));
auto file_name_guess = Core::guess_mime_type_based_on_filename(path);
auto mime_type = Core::guess_mime_type_based_on_sniffed_bytes(bytes).value_or(file_name_guess);
auto human_readable_description = get_description_from_mime_type(mime_type, path).value_or(mime_type);
outln("{}: {}", path, flag_mime_only ? mime_type : human_readable_description);
}
}
return all_ok ? 0 : 1;
}
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