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b01b94d843
* FileSys::Ticket::Load: Return error if signature type does not match * fixup! FileSys::Ticket::Load: Return error if signature type does not match
242 lines
8.1 KiB
C++
242 lines
8.1 KiB
C++
// Copyright 2017 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <cinttypes>
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#include <cryptopp/sha.h>
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#include "common/alignment.h"
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#include "common/file_util.h"
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#include "common/logging/log.h"
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#include "core/file_sys/cia_common.h"
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#include "core/file_sys/title_metadata.h"
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#include "core/loader/loader.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// FileSys namespace
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namespace FileSys {
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Loader::ResultStatus TitleMetadata::Load(const std::string& file_path) {
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FileUtil::IOFile file(file_path, "rb");
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if (!file.IsOpen())
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return Loader::ResultStatus::Error;
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std::vector<u8> file_data(file.GetSize());
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if (!file.ReadBytes(file_data.data(), file.GetSize()))
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return Loader::ResultStatus::Error;
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Loader::ResultStatus result = Load(file_data);
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if (result != Loader::ResultStatus::Success)
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LOG_ERROR(Service_FS, "Failed to load TMD from file {}!", file_path);
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return result;
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}
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Loader::ResultStatus TitleMetadata::Load(const std::vector<u8> file_data, std::size_t offset) {
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std::size_t total_size = static_cast<std::size_t>(file_data.size() - offset);
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if (total_size < sizeof(u32_be))
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return Loader::ResultStatus::Error;
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memcpy(&signature_type, &file_data[offset], sizeof(u32_be));
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// Signature lengths are variable, and the body follows the signature
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u32 signature_size = GetSignatureSize(signature_type);
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if (signature_size == 0) {
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return Loader::ResultStatus::Error;
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}
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// The TMD body start position is rounded to the nearest 0x40 after the signature
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std::size_t body_start = Common::AlignUp(signature_size + sizeof(u32), 0x40);
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std::size_t body_end = body_start + sizeof(Body);
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if (total_size < body_end)
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return Loader::ResultStatus::Error;
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// Read signature + TMD body, then load the amount of ContentChunks specified
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tmd_signature.resize(signature_size);
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memcpy(tmd_signature.data(), &file_data[offset + sizeof(u32_be)], signature_size);
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memcpy(&tmd_body, &file_data[offset + body_start], sizeof(TitleMetadata::Body));
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std::size_t expected_size =
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body_start + sizeof(Body) + static_cast<u16>(tmd_body.content_count) * sizeof(ContentChunk);
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if (total_size < expected_size) {
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LOG_ERROR(Service_FS, "Malformed TMD, expected size 0x{:x}, got 0x{:x}!", expected_size,
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total_size);
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return Loader::ResultStatus::ErrorInvalidFormat;
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}
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for (u16 i = 0; i < tmd_body.content_count; i++) {
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ContentChunk chunk;
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memcpy(&chunk, &file_data[offset + body_end + (i * sizeof(ContentChunk))],
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sizeof(ContentChunk));
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tmd_chunks.push_back(chunk);
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}
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return Loader::ResultStatus::Success;
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}
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Loader::ResultStatus TitleMetadata::Save(const std::string& file_path) {
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FileUtil::IOFile file(file_path, "wb");
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if (!file.IsOpen())
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return Loader::ResultStatus::Error;
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if (!file.WriteBytes(&signature_type, sizeof(u32_be)))
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return Loader::ResultStatus::Error;
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// Signature lengths are variable, and the body follows the signature
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u32 signature_size = GetSignatureSize(signature_type);
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if (signature_size == 0) {
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return Loader::ResultStatus::Error;
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}
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if (!file.WriteBytes(tmd_signature.data(), signature_size))
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return Loader::ResultStatus::Error;
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// The TMD body start position is rounded to the nearest 0x40 after the signature
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std::size_t body_start = Common::AlignUp(signature_size + sizeof(u32), 0x40);
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file.Seek(body_start, SEEK_SET);
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// Update our TMD body values and hashes
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tmd_body.content_count = static_cast<u16>(tmd_chunks.size());
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// TODO(shinyquagsire23): Do TMDs with more than one contentinfo exist?
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// For now we'll just adjust the first index to hold all content chunks
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// and ensure that no further content info data exists.
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tmd_body.contentinfo = {};
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tmd_body.contentinfo[0].index = 0;
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tmd_body.contentinfo[0].command_count = static_cast<u16>(tmd_chunks.size());
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CryptoPP::SHA256 chunk_hash;
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for (u16 i = 0; i < tmd_body.content_count; i++) {
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chunk_hash.Update(reinterpret_cast<u8*>(&tmd_chunks[i]), sizeof(ContentChunk));
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}
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chunk_hash.Final(tmd_body.contentinfo[0].hash.data());
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CryptoPP::SHA256 contentinfo_hash;
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for (std::size_t i = 0; i < tmd_body.contentinfo.size(); i++) {
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chunk_hash.Update(reinterpret_cast<u8*>(&tmd_body.contentinfo[i]), sizeof(ContentInfo));
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}
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chunk_hash.Final(tmd_body.contentinfo_hash.data());
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// Write our TMD body, then write each of our ContentChunks
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if (file.WriteBytes(&tmd_body, sizeof(TitleMetadata::Body)) != sizeof(TitleMetadata::Body))
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return Loader::ResultStatus::Error;
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for (u16 i = 0; i < tmd_body.content_count; i++) {
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ContentChunk chunk = tmd_chunks[i];
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if (file.WriteBytes(&chunk, sizeof(ContentChunk)) != sizeof(ContentChunk))
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return Loader::ResultStatus::Error;
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}
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return Loader::ResultStatus::Success;
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}
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u64 TitleMetadata::GetTitleID() const {
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return tmd_body.title_id;
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}
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u32 TitleMetadata::GetTitleType() const {
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return tmd_body.title_type;
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}
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u16 TitleMetadata::GetTitleVersion() const {
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return tmd_body.title_version;
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}
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u64 TitleMetadata::GetSystemVersion() const {
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return tmd_body.system_version;
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}
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size_t TitleMetadata::GetContentCount() const {
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return tmd_chunks.size();
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}
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u32 TitleMetadata::GetBootContentID() const {
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return tmd_chunks[TMDContentIndex::Main].id;
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}
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u32 TitleMetadata::GetManualContentID() const {
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return tmd_chunks[TMDContentIndex::Manual].id;
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}
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u32 TitleMetadata::GetDLPContentID() const {
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return tmd_chunks[TMDContentIndex::DLP].id;
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}
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u32 TitleMetadata::GetContentIDByIndex(u16 index) const {
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return tmd_chunks[index].id;
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}
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u16 TitleMetadata::GetContentTypeByIndex(u16 index) const {
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return tmd_chunks[index].type;
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}
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u64 TitleMetadata::GetContentSizeByIndex(u16 index) const {
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return tmd_chunks[index].size;
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}
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std::array<u8, 16> TitleMetadata::GetContentCTRByIndex(u16 index) const {
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std::array<u8, 16> ctr{};
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std::memcpy(ctr.data(), &tmd_chunks[index].index, sizeof(u16));
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return ctr;
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}
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void TitleMetadata::SetTitleID(u64 title_id) {
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tmd_body.title_id = title_id;
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}
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void TitleMetadata::SetTitleType(u32 type) {
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tmd_body.title_type = type;
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}
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void TitleMetadata::SetTitleVersion(u16 version) {
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tmd_body.title_version = version;
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}
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void TitleMetadata::SetSystemVersion(u64 version) {
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tmd_body.system_version = version;
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}
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void TitleMetadata::AddContentChunk(const ContentChunk& chunk) {
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tmd_chunks.push_back(chunk);
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}
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void TitleMetadata::Print() const {
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LOG_DEBUG(Service_FS, "{} chunks", static_cast<u32>(tmd_body.content_count));
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// Content info describes ranges of content chunks
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LOG_DEBUG(Service_FS, "Content info:");
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for (std::size_t i = 0; i < tmd_body.contentinfo.size(); i++) {
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if (tmd_body.contentinfo[i].command_count == 0)
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break;
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LOG_DEBUG(Service_FS, " Index {:04X}, Command Count {:04X}",
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static_cast<u32>(tmd_body.contentinfo[i].index),
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static_cast<u32>(tmd_body.contentinfo[i].command_count));
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}
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// For each content info, print their content chunk range
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for (std::size_t i = 0; i < tmd_body.contentinfo.size(); i++) {
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u16 index = static_cast<u16>(tmd_body.contentinfo[i].index);
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u16 count = static_cast<u16>(tmd_body.contentinfo[i].command_count);
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if (count == 0)
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continue;
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LOG_DEBUG(Service_FS, "Content chunks for content info index {}:", i);
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for (u16 j = index; j < index + count; j++) {
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// Don't attempt to print content we don't have
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if (j > tmd_body.content_count)
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break;
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const ContentChunk& chunk = tmd_chunks[j];
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LOG_DEBUG(Service_FS, " ID {:08X}, Index {:04X}, Type {:04x}, Size {:016X}",
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static_cast<u32>(chunk.id), static_cast<u32>(chunk.index),
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static_cast<u32>(chunk.type), static_cast<u64>(chunk.size));
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}
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}
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}
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} // namespace FileSys
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