diff options
Diffstat (limited to '')
| -rw-r--r-- | src/core/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | src/core/file_sys/archive_ncch.cpp | 29 | ||||
| -rw-r--r-- | src/core/file_sys/ncch_container.cpp | 245 | ||||
| -rw-r--r-- | src/core/file_sys/ncch_container.h | 30 | ||||
| -rw-r--r-- | src/core/file_sys/title_metadata.cpp | 212 | ||||
| -rw-r--r-- | src/core/file_sys/title_metadata.h | 125 | ||||
| -rw-r--r-- | src/core/loader/ncch.cpp | 17 |
7 files changed, 581 insertions, 78 deletions
diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt index 3ed619991..2618da18c 100644 --- a/src/core/CMakeLists.txt +++ b/src/core/CMakeLists.txt @@ -29,6 +29,7 @@ set(SRCS file_sys/ncch_container.cpp file_sys/path_parser.cpp file_sys/savedata_archive.cpp + file_sys/title_metadata.cpp frontend/camera/blank_camera.cpp frontend/camera/factory.cpp frontend/camera/interface.cpp diff --git a/src/core/file_sys/archive_ncch.cpp b/src/core/file_sys/archive_ncch.cpp index 6d9007731..e8c5be983 100644 --- a/src/core/file_sys/archive_ncch.cpp +++ b/src/core/file_sys/archive_ncch.cpp @@ -13,7 +13,10 @@ #include "core/file_sys/archive_ncch.h" #include "core/file_sys/errors.h" #include "core/file_sys/ivfc_archive.h" +#include "core/file_sys/ncch_container.h" +#include "core/file_sys/title_metadata.h" #include "core/hle/service/fs/archive.h" +#include "core/loader/loader.h" //////////////////////////////////////////////////////////////////////////////////////////////////// // FileSys namespace @@ -25,8 +28,18 @@ static std::string GetNCCHContainerPath(const std::string& nand_directory) { } static std::string GetNCCHPath(const std::string& mount_point, u32 high, u32 low) { - return Common::StringFromFormat("%s%08x/%08x/content/00000000.app.romfs", mount_point.c_str(), - high, low); + u32 content_id = 0; + + // TODO(shinyquagsire23): Title database should be doing this path lookup + std::string content_path = + Common::StringFromFormat("%s%08x/%08x/content/", mount_point.c_str(), high, low); + std::string tmd_path = content_path + "00000000.tmd"; + TitleMetadata tmd(tmd_path); + if (tmd.Load() == Loader::ResultStatus::Success) { + content_id = tmd.GetBootContentID(); + } + + return Common::StringFromFormat("%s%08x.app", content_path.c_str(), content_id); } ArchiveFactory_NCCH::ArchiveFactory_NCCH(const std::string& nand_directory) @@ -38,9 +51,14 @@ ResultVal<std::unique_ptr<ArchiveBackend>> ArchiveFactory_NCCH::Open(const Path& u32 high = data[1]; u32 low = data[0]; std::string file_path = GetNCCHPath(mount_point, high, low); - auto file = std::make_shared<FileUtil::IOFile>(file_path, "rb"); - if (!file->IsOpen()) { + std::shared_ptr<FileUtil::IOFile> romfs_file; + u64 romfs_offset = 0; + u64 romfs_size = 0; + auto ncch_container = NCCHContainer(file_path); + + if (ncch_container.ReadRomFS(romfs_file, romfs_offset, romfs_size) != + Loader::ResultStatus::Success) { // High Title ID of the archive: The category (https://3dbrew.org/wiki/Title_list). constexpr u32 shared_data_archive = 0x0004009B; constexpr u32 system_data_archive = 0x000400DB; @@ -74,9 +92,8 @@ ResultVal<std::unique_ptr<ArchiveBackend>> ArchiveFactory_NCCH::Open(const Path& } return ERROR_NOT_FOUND; } - auto size = file->GetSize(); - auto archive = std::make_unique<IVFCArchive>(file, 0, size); + auto archive = std::make_unique<IVFCArchive>(romfs_file, romfs_offset, romfs_size); return MakeResult<std::unique_ptr<ArchiveBackend>>(std::move(archive)); } diff --git a/src/core/file_sys/ncch_container.cpp b/src/core/file_sys/ncch_container.cpp index 59c72f3e9..b9fb940c7 100644 --- a/src/core/file_sys/ncch_container.cpp +++ b/src/core/file_sys/ncch_container.cpp @@ -116,92 +116,143 @@ Loader::ResultStatus NCCHContainer::Load() { if (is_loaded) return Loader::ResultStatus::Success; - // Reset read pointer in case this file has been read before. - file.Seek(0, SEEK_SET); + if (file.IsOpen()) { + // Reset read pointer in case this file has been read before. + file.Seek(0, SEEK_SET); - if (file.ReadBytes(&ncch_header, sizeof(NCCH_Header)) != sizeof(NCCH_Header)) - return Loader::ResultStatus::Error; + if (file.ReadBytes(&ncch_header, sizeof(NCCH_Header)) != sizeof(NCCH_Header)) + return Loader::ResultStatus::Error; - // Skip NCSD header and load first NCCH (NCSD is just a container of NCCH files)... - if (Loader::MakeMagic('N', 'C', 'S', 'D') == ncch_header.magic) { - LOG_DEBUG(Service_FS, "Only loading the first (bootable) NCCH within the NCSD file!"); - ncch_offset = 0x4000; - file.Seek(ncch_offset, SEEK_SET); - file.ReadBytes(&ncch_header, sizeof(NCCH_Header)); - } + // Skip NCSD header and load first NCCH (NCSD is just a container of NCCH files)... + if (Loader::MakeMagic('N', 'C', 'S', 'D') == ncch_header.magic) { + LOG_DEBUG(Service_FS, "Only loading the first (bootable) NCCH within the NCSD file!"); + ncch_offset = 0x4000; + file.Seek(ncch_offset, SEEK_SET); + file.ReadBytes(&ncch_header, sizeof(NCCH_Header)); + } - // Verify we are loading the correct file type... - if (Loader::MakeMagic('N', 'C', 'C', 'H') != ncch_header.magic) - return Loader::ResultStatus::ErrorInvalidFormat; + // Verify we are loading the correct file type... + if (Loader::MakeMagic('N', 'C', 'C', 'H') != ncch_header.magic) + return Loader::ResultStatus::ErrorInvalidFormat; + + has_header = true; + + // System archives and DLC don't have an extended header but have RomFS + if (ncch_header.extended_header_size) { + if (file.ReadBytes(&exheader_header, sizeof(ExHeader_Header)) != + sizeof(ExHeader_Header)) + return Loader::ResultStatus::Error; + + is_compressed = (exheader_header.codeset_info.flags.flag & 1) == 1; + u32 entry_point = exheader_header.codeset_info.text.address; + u32 code_size = exheader_header.codeset_info.text.code_size; + u32 stack_size = exheader_header.codeset_info.stack_size; + u32 bss_size = exheader_header.codeset_info.bss_size; + u32 core_version = exheader_header.arm11_system_local_caps.core_version; + u8 priority = exheader_header.arm11_system_local_caps.priority; + u8 resource_limit_category = + exheader_header.arm11_system_local_caps.resource_limit_category; + + LOG_DEBUG(Service_FS, "Name: %s", + exheader_header.codeset_info.name); + LOG_DEBUG(Service_FS, "Program ID: %016" PRIX64, + ncch_header.program_id); + LOG_DEBUG(Service_FS, "Code compressed: %s", is_compressed ? "yes" : "no"); + LOG_DEBUG(Service_FS, "Entry point: 0x%08X", entry_point); + LOG_DEBUG(Service_FS, "Code size: 0x%08X", code_size); + LOG_DEBUG(Service_FS, "Stack size: 0x%08X", stack_size); + LOG_DEBUG(Service_FS, "Bss size: 0x%08X", bss_size); + LOG_DEBUG(Service_FS, "Core version: %d", core_version); + LOG_DEBUG(Service_FS, "Thread priority: 0x%X", priority); + LOG_DEBUG(Service_FS, "Resource limit category: %d", resource_limit_category); + LOG_DEBUG(Service_FS, "System Mode: %d", + static_cast<int>(exheader_header.arm11_system_local_caps.system_mode)); + + if (exheader_header.system_info.jump_id != ncch_header.program_id) { + LOG_ERROR(Service_FS, + "ExHeader Program ID mismatch: the ROM is probably encrypted."); + return Loader::ResultStatus::ErrorEncrypted; + } - // System archives and DLC don't have an extended header but have RomFS - if (ncch_header.extended_header_size) { - if (file.ReadBytes(&exheader_header, sizeof(ExHeader_Header)) != sizeof(ExHeader_Header)) - return Loader::ResultStatus::Error; + has_exheader = true; + } - is_compressed = (exheader_header.codeset_info.flags.flag & 1) == 1; - u32 entry_point = exheader_header.codeset_info.text.address; - u32 code_size = exheader_header.codeset_info.text.code_size; - u32 stack_size = exheader_header.codeset_info.stack_size; - u32 bss_size = exheader_header.codeset_info.bss_size; - u32 core_version = exheader_header.arm11_system_local_caps.core_version; - u8 priority = exheader_header.arm11_system_local_caps.priority; - u8 resource_limit_category = - exheader_header.arm11_system_local_caps.resource_limit_category; - - LOG_DEBUG(Service_FS, "Name: %s", exheader_header.codeset_info.name); - LOG_DEBUG(Service_FS, "Program ID: %016" PRIX64, ncch_header.program_id); - LOG_DEBUG(Service_FS, "Code compressed: %s", is_compressed ? "yes" : "no"); - LOG_DEBUG(Service_FS, "Entry point: 0x%08X", entry_point); - LOG_DEBUG(Service_FS, "Code size: 0x%08X", code_size); - LOG_DEBUG(Service_FS, "Stack size: 0x%08X", stack_size); - LOG_DEBUG(Service_FS, "Bss size: 0x%08X", bss_size); - LOG_DEBUG(Service_FS, "Core version: %d", core_version); - LOG_DEBUG(Service_FS, "Thread priority: 0x%X", priority); - LOG_DEBUG(Service_FS, "Resource limit category: %d", resource_limit_category); - LOG_DEBUG(Service_FS, "System Mode: %d", - static_cast<int>(exheader_header.arm11_system_local_caps.system_mode)); - - if (exheader_header.system_info.jump_id != ncch_header.program_id) { - LOG_ERROR(Service_FS, "ExHeader Program ID mismatch: the ROM is probably encrypted."); - return Loader::ResultStatus::ErrorEncrypted; + // DLC can have an ExeFS and a RomFS but no extended header + if (ncch_header.exefs_size) { + exefs_offset = ncch_header.exefs_offset * kBlockSize; + u32 exefs_size = ncch_header.exefs_size * kBlockSize; + + LOG_DEBUG(Service_FS, "ExeFS offset: 0x%08X", exefs_offset); + LOG_DEBUG(Service_FS, "ExeFS size: 0x%08X", exefs_size); + + file.Seek(exefs_offset + ncch_offset, SEEK_SET); + if (file.ReadBytes(&exefs_header, sizeof(ExeFs_Header)) != sizeof(ExeFs_Header)) + return Loader::ResultStatus::Error; + + exefs_file = FileUtil::IOFile(filepath, "rb"); + has_exefs = true; } - has_exheader = true; + if (ncch_header.romfs_offset != 0 && ncch_header.romfs_size != 0) + has_romfs = true; } - // DLC can have an ExeFS and a RomFS but no extended header - if (ncch_header.exefs_size) { - exefs_offset = ncch_header.exefs_offset * kBlockSize; - u32 exefs_size = ncch_header.exefs_size * kBlockSize; + LoadOverrides(); - LOG_DEBUG(Service_FS, "ExeFS offset: 0x%08X", exefs_offset); - LOG_DEBUG(Service_FS, "ExeFS size: 0x%08X", exefs_size); + // We need at least one of these or overrides, practically + if (!(has_exefs || has_romfs || is_tainted)) + return Loader::ResultStatus::Error; - file.Seek(exefs_offset + ncch_offset, SEEK_SET); - if (file.ReadBytes(&exefs_header, sizeof(ExeFs_Header)) != sizeof(ExeFs_Header)) - return Loader::ResultStatus::Error; + is_loaded = true; + return Loader::ResultStatus::Success; +} - has_exefs = true; +Loader::ResultStatus NCCHContainer::LoadOverrides() { + // Check for split-off files, mark the archive as tainted if we will use them + std::string romfs_override = filepath + ".romfs"; + if (FileUtil::Exists(romfs_override)) { + is_tainted = true; } - if (ncch_header.romfs_offset != 0 && ncch_header.romfs_size != 0) - has_romfs = true; + // If we have a split-off exefs file/folder, it takes priority + std::string exefs_override = filepath + ".exefs"; + std::string exefsdir_override = filepath + ".exefsdir/"; + if (FileUtil::Exists(exefs_override)) { + exefs_file = FileUtil::IOFile(exefs_override, "rb"); + + if (exefs_file.ReadBytes(&exefs_header, sizeof(ExeFs_Header)) == sizeof(ExeFs_Header)) { + LOG_DEBUG(Service_FS, "Loading ExeFS section from %s", exefs_override.c_str()); + exefs_offset = 0; + is_tainted = true; + has_exefs = true; + } else { + exefs_file = FileUtil::IOFile(filepath, "rb"); + } + } else if (FileUtil::Exists(exefsdir_override) && FileUtil::IsDirectory(exefsdir_override)) { + is_tainted = true; + } + + if (is_tainted) + LOG_WARNING(Service_FS, + "Loaded NCCH %s is tainted, application behavior may not be as expected!", + filepath.c_str()); - is_loaded = true; return Loader::ResultStatus::Success; } Loader::ResultStatus NCCHContainer::LoadSectionExeFS(const char* name, std::vector<u8>& buffer) { - if (!file.IsOpen()) - return Loader::ResultStatus::Error; - Loader::ResultStatus result = Load(); if (result != Loader::ResultStatus::Success) return result; - if (!has_exefs) - return Loader::ResultStatus::ErrorNotUsed; + // Check if we have files that can drop-in and replace + result = LoadOverrideExeFSSection(name, buffer); + if (result == Loader::ResultStatus::Success || !has_exefs) + return result; + + // If we don't have any separate files, we'll need a full ExeFS + if (!exefs_file.IsOpen()) + return Loader::ResultStatus::Error; LOG_DEBUG(Service_FS, "%d sections:", kMaxSections); // Iterate through the ExeFs archive until we find a section with the specified name... @@ -215,7 +266,7 @@ Loader::ResultStatus NCCHContainer::LoadSectionExeFS(const char* name, std::vect s64 section_offset = (section.offset + exefs_offset + sizeof(ExeFs_Header) + ncch_offset); - file.Seek(section_offset, SEEK_SET); + exefs_file.Seek(section_offset, SEEK_SET); if (strcmp(section.name, ".code") == 0 && is_compressed) { // Section is compressed, read compressed .code section... @@ -226,7 +277,7 @@ Loader::ResultStatus NCCHContainer::LoadSectionExeFS(const char* name, std::vect return Loader::ResultStatus::ErrorMemoryAllocationFailed; } - if (file.ReadBytes(&temp_buffer[0], section.size) != section.size) + if (exefs_file.ReadBytes(&temp_buffer[0], section.size) != section.size) return Loader::ResultStatus::Error; // Decompress .code section... @@ -237,7 +288,7 @@ Loader::ResultStatus NCCHContainer::LoadSectionExeFS(const char* name, std::vect } else { // Section is uncompressed... buffer.resize(section.size); - if (file.ReadBytes(&buffer[0], section.size) != section.size) + if (exefs_file.ReadBytes(&buffer[0], section.size) != section.size) return Loader::ResultStatus::Error; } return Loader::ResultStatus::Success; @@ -246,20 +297,56 @@ Loader::ResultStatus NCCHContainer::LoadSectionExeFS(const char* name, std::vect return Loader::ResultStatus::ErrorNotUsed; } -Loader::ResultStatus NCCHContainer::ReadRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file, - u64& offset, u64& size) { - if (!file.IsOpen()) +Loader::ResultStatus NCCHContainer::LoadOverrideExeFSSection(const char* name, + std::vector<u8>& buffer) { + std::string override_name; + + // Map our section name to the extracted equivalent + if (!strcmp(name, ".code")) + override_name = "code.bin"; + else if (!strcmp(name, "icon")) + override_name = "code.bin"; + else if (!strcmp(name, "banner")) + override_name = "banner.bnr"; + else if (!strcmp(name, "logo")) + override_name = "logo.bcma.lz"; + else return Loader::ResultStatus::Error; + std::string section_override = filepath + ".exefsdir/" + override_name; + FileUtil::IOFile section_file(section_override, "rb"); + + if (section_file.IsOpen()) { + auto section_size = section_file.GetSize(); + buffer.resize(section_size); + + section_file.Seek(0, SEEK_SET); + if (section_file.ReadBytes(&buffer[0], section_size) == section_size) { + LOG_WARNING(Service_FS, "File %s overriding built-in ExeFS file", + section_override.c_str()); + return Loader::ResultStatus::Success; + } + } + return Loader::ResultStatus::ErrorNotUsed; +} + +Loader::ResultStatus NCCHContainer::ReadRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file, + u64& offset, u64& size) { Loader::ResultStatus result = Load(); if (result != Loader::ResultStatus::Success) return result; + if (ReadOverrideRomFS(romfs_file, offset, size) == Loader::ResultStatus::Success) + return Loader::ResultStatus::Success; + if (!has_romfs) { LOG_DEBUG(Service_FS, "RomFS requested from NCCH which has no RomFS"); return Loader::ResultStatus::ErrorNotUsed; } + if (!file.IsOpen()) + return Loader::ResultStatus::Error; + u32 romfs_offset = ncch_offset + (ncch_header.romfs_offset * kBlockSize) + 0x1000; u32 romfs_size = (ncch_header.romfs_size * kBlockSize) - 0x1000; @@ -280,11 +367,31 @@ Loader::ResultStatus NCCHContainer::ReadRomFS(std::shared_ptr<FileUtil::IOFile>& return Loader::ResultStatus::Success; } +Loader::ResultStatus NCCHContainer::ReadOverrideRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file, + u64& offset, u64& size) { + // Check for RomFS overrides + std::string split_filepath = filepath + ".romfs"; + if (FileUtil::Exists(split_filepath)) { + romfs_file = std::make_shared<FileUtil::IOFile>(split_filepath, "rb"); + if (romfs_file->IsOpen()) { + LOG_WARNING(Service_FS, "File %s overriding built-in RomFS", split_filepath.c_str()); + offset = 0; + size = romfs_file->GetSize(); + return Loader::ResultStatus::Success; + } + } + + return Loader::ResultStatus::ErrorNotUsed; +} + Loader::ResultStatus NCCHContainer::ReadProgramId(u64_le& program_id) { Loader::ResultStatus result = Load(); if (result != Loader::ResultStatus::Success) return result; + if (!has_header) + return Loader::ResultStatus::ErrorNotUsed; + program_id = ncch_header.program_id; return Loader::ResultStatus::Success; } diff --git a/src/core/file_sys/ncch_container.h b/src/core/file_sys/ncch_container.h index 8af9032b4..2cc9d13dc 100644 --- a/src/core/file_sys/ncch_container.h +++ b/src/core/file_sys/ncch_container.h @@ -180,6 +180,13 @@ public: Loader::ResultStatus Load(); /** + * Attempt to find overridden sections for the NCCH and mark the container as tainted + * if any are found. + * @return ResultStatus result of function + */ + Loader::ResultStatus LoadOverrides(); + + /** * Reads an application ExeFS section of an NCCH file (e.g. .code, .logo, etc.) * @param name Name of section to read out of NCCH file * @param buffer Vector to read data into @@ -188,6 +195,15 @@ public: Loader::ResultStatus LoadSectionExeFS(const char* name, std::vector<u8>& buffer); /** + * Reads an application ExeFS section from external files instead of an NCCH file, + * (e.g. code.bin, logo.bcma.lz, icon.icn, banner.bnr) + * @param name Name of section to read from external files + * @param buffer Vector to read data into + * @return ResultStatus result of function + */ + Loader::ResultStatus LoadOverrideExeFSSection(const char* name, std::vector<u8>& buffer); + + /** * Get the RomFS of the NCCH container * Since the RomFS can be huge, we return a file reference instead of copying to a buffer * @param romfs_file The file containing the RomFS @@ -199,6 +215,17 @@ public: u64& size); /** + * Get the override RomFS of the NCCH container + * Since the RomFS can be huge, we return a file reference instead of copying to a buffer + * @param romfs_file The file containing the RomFS + * @param offset The offset the romfs begins on + * @param size The size of the romfs + * @return ResultStatus result of function + */ + Loader::ResultStatus ReadOverrideRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file, + u64& offset, u64& size); + + /** * Get the Program ID of the NCCH container * @return ResultStatus result of function */ @@ -227,10 +254,12 @@ public: ExHeader_Header exheader_header; private: + bool has_header = false; bool has_exheader = false; bool has_exefs = false; bool has_romfs = false; + bool is_tainted = false; // Are there parts of this container being overridden? bool is_loaded = false; bool is_compressed = false; @@ -239,6 +268,7 @@ private: std::string filepath; FileUtil::IOFile file; + FileUtil::IOFile exefs_file; }; } // namespace FileSys diff --git a/src/core/file_sys/title_metadata.cpp b/src/core/file_sys/title_metadata.cpp new file mode 100644 index 000000000..1ef8840a0 --- /dev/null +++ b/src/core/file_sys/title_metadata.cpp @@ -0,0 +1,212 @@ +// Copyright 2017 Citra Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include <cinttypes> +#include <cryptopp/sha.h> +#include "common/alignment.h" +#include "common/file_util.h" +#include "common/logging/log.h" +#include "core/file_sys/title_metadata.h" +#include "core/loader/loader.h" + +//////////////////////////////////////////////////////////////////////////////////////////////////// +// FileSys namespace + +namespace FileSys { + +static u32 GetSignatureSize(u32 signature_type) { + switch (signature_type) { + case Rsa4096Sha1: + case Rsa4096Sha256: + return 0x200; + + case Rsa2048Sha1: + case Rsa2048Sha256: + return 0x100; + + case EllipticSha1: + case EcdsaSha256: + return 0x3C; + } +} + +Loader::ResultStatus TitleMetadata::Load() { + FileUtil::IOFile file(filepath, "rb"); + if (!file.IsOpen()) + return Loader::ResultStatus::Error; + + if (!file.ReadBytes(&signature_type, sizeof(u32_be))) + return Loader::ResultStatus::Error; + + // Signature lengths are variable, and the body follows the signature + u32 signature_size = GetSignatureSize(signature_type); + + tmd_signature.resize(signature_size); + if (!file.ReadBytes(&tmd_signature[0], signature_size)) + return Loader::ResultStatus::Error; + + // The TMD body start position is rounded to the nearest 0x40 after the signature + size_t body_start = Common::AlignUp(signature_size + sizeof(u32), 0x40); + file.Seek(body_start, SEEK_SET); + + // Read our TMD body, then load the amount of ContentChunks specified + if (file.ReadBytes(&tmd_body, sizeof(TitleMetadata::Body)) != sizeof(TitleMetadata::Body)) + return Loader::ResultStatus::Error; + + for (u16 i = 0; i < tmd_body.content_count; i++) { + ContentChunk chunk; + if (file.ReadBytes(&chunk, sizeof(ContentChunk)) == sizeof(ContentChunk)) { + tmd_chunks.push_back(chunk); + } else { + LOG_ERROR(Service_FS, "Malformed TMD %s, failed to load content chunk index %u!", + filepath.c_str(), i); + return Loader::ResultStatus::ErrorInvalidFormat; + } + } + + return Loader::ResultStatus::Success; +} + +Loader::ResultStatus TitleMetadata::Save() { + FileUtil::IOFile file(filepath, "wb"); + if (!file.IsOpen()) + return Loader::ResultStatus::Error; + + if (!file.WriteBytes(&signature_type, sizeof(u32_be))) + return Loader::ResultStatus::Error; + + // Signature lengths are variable, and the body follows the signature + u32 signature_size = GetSignatureSize(signature_type); + + if (!file.WriteBytes(tmd_signature.data(), signature_size)) + return Loader::ResultStatus::Error; + + // The TMD body start position is rounded to the nearest 0x40 after the signature + size_t body_start = Common::AlignUp(signature_size + sizeof(u32), 0x40); + file.Seek(body_start, SEEK_SET); + + // Update our TMD body values and hashes + tmd_body.content_count = static_cast<u16>(tmd_chunks.size()); + + // TODO(shinyquagsire23): Do TMDs with more than one contentinfo exist? + // For now we'll just adjust the first index to hold all content chunks + // and ensure that no further content info data exists. + tmd_body.contentinfo = {}; + tmd_body.contentinfo[0].index = 0; + tmd_body.contentinfo[0].command_count = static_cast<u16>(tmd_chunks.size()); + + CryptoPP::SHA256 chunk_hash; + for (u16 i = 0; i < tmd_body.content_count; i++) { + chunk_hash.Update(reinterpret_cast<u8*>(&tmd_chunks[i]), sizeof(ContentChunk)); + } + chunk_hash.Final(tmd_body.contentinfo[0].hash.data()); + + CryptoPP::SHA256 contentinfo_hash; + for (size_t i = 0; i < tmd_body.contentinfo.size(); i++) { + chunk_hash.Update(reinterpret_cast<u8*>(&tmd_body.contentinfo[i]), sizeof(ContentInfo)); + } + chunk_hash.Final(tmd_body.contentinfo_hash.data()); + + // Write our TMD body, then write each of our ContentChunks + if (file.WriteBytes(&tmd_body, sizeof(TitleMetadata::Body)) != sizeof(TitleMetadata::Body)) + return Loader::ResultStatus::Error; + + for (u16 i = 0; i < tmd_body.content_count; i++) { + ContentChunk chunk = tmd_chunks[i]; + if (file.WriteBytes(&chunk, sizeof(ContentChunk)) != sizeof(ContentChunk)) + return Loader::ResultStatus::Error; + } + + return Loader::ResultStatus::Success; +} + +u64 TitleMetadata::GetTitleID() const { + return tmd_body.title_id; +} + +u32 TitleMetadata::GetTitleType() const { + return tmd_body.title_type; +} + +u16 TitleMetadata::GetTitleVersion() const { + return tmd_body.title_version; +} + +u64 TitleMetadata::GetSystemVersion() const { + return tmd_body.system_version; +} + +size_t TitleMetadata::GetContentCount() const { + return tmd_chunks.size(); +} + +u32 TitleMetadata::GetBootContentID() const { + return tmd_chunks[TMDContentIndex::Main].id; +} + +u32 TitleMetadata::GetManualContentID() const { + return tmd_chunks[TMDContentIndex::Manual].id; +} + +u32 TitleMetadata::GetDLPContentID() const { + return tmd_chunks[TMDContentIndex::DLP].id; +} + +void TitleMetadata::SetTitleID(u64 title_id) { + tmd_body.title_id = title_id; +} + +void TitleMetadata::SetTitleType(u32 type) { + tmd_body.title_type = type; +} + +void TitleMetadata::SetTitleVersion(u16 version) { + tmd_body.title_version = version; +} + +void TitleMetadata::SetSystemVersion(u64 version) { + tmd_body.system_version = version; +} + +void TitleMetadata::AddContentChunk(const ContentChunk& chunk) { + tmd_chunks.push_back(chunk); +} + +void TitleMetadata::Print() const { + LOG_DEBUG(Service_FS, "%s - %u chunks", filepath.c_str(), + static_cast<u32>(tmd_body.content_count)); + + // Content info describes ranges of content chunks + LOG_DEBUG(Service_FS, "Content info:"); + for (size_t i = 0; i < tmd_body.contentinfo.size(); i++) { + if (tmd_body.contentinfo[i].command_count == 0) + break; + + LOG_DEBUG(Service_FS, " Index %04X, Command Count %04X", + static_cast<u32>(tmd_body.contentinfo[i].index), + static_cast<u32>(tmd_body.contentinfo[i].command_count)); + } + + // For each content info, print their content chunk range + for (size_t i = 0; i < tmd_body.contentinfo.size(); i++) { + u16 index = static_cast<u16>(tmd_body.contentinfo[i].index); + u16 count = static_cast<u16>(tmd_body.contentinfo[i].command_count); + + if (count == 0) + continue; + + LOG_DEBUG(Service_FS, "Content chunks for content info index %zu:", i); + for (u16 j = index; j < index + count; j++) { + // Don't attempt to print content we don't have + if (j > tmd_body.content_count) + break; + + const ContentChunk& chunk = tmd_chunks[j]; + LOG_DEBUG(Service_FS, " ID %08X, Index %04X, Type %04x, Size %016" PRIX64, + static_cast<u32>(chunk.id), static_cast<u32>(chunk.index), + static_cast<u32>(chunk.type), static_cast<u64>(chunk.size)); + } + } +} +} // namespace FileSys diff --git a/src/core/file_sys/title_metadata.h b/src/core/file_sys/title_metadata.h new file mode 100644 index 000000000..1fc157bf3 --- /dev/null +++ b/src/core/file_sys/title_metadata.h @@ -0,0 +1,125 @@ +// Copyright 2017 Citra Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include <string> +#include <vector> +#include "common/common_types.h" +#include "common/swap.h" + +namespace Loader { +enum class ResultStatus; +} + +//////////////////////////////////////////////////////////////////////////////////////////////////// +// FileSys namespace + +namespace FileSys { + +enum TMDSignatureType : u32 { + Rsa4096Sha1 = 0x10000, + Rsa2048Sha1 = 0x10001, + EllipticSha1 = 0x10002, + Rsa4096Sha256 = 0x10003, + Rsa2048Sha256 = 0x10004, + EcdsaSha256 = 0x10005 +}; + +enum TMDContentTypeFlag : u16 { + Encrypted = 1 << 1, + Disc = 1 << 2, + CFM = 1 << 3, + Optional = 1 << 14, + Shared = 1 << 15 +}; + +/** + * Helper which implements an interface to read and write Title Metadata (TMD) files. + * If a file path is provided and the file exists, it can be parsed and used, otherwise + * it must be created. The TMD file can then be interpreted, modified and/or saved. + */ +class TitleMetadata { +public: + struct ContentChunk { + u32_be id; + u16_be index; + u16_be type; + u64_be size; + std::array<u8, 0x20> hash; + }; + + static_assert(sizeof(ContentChunk) == 0x30, "TMD ContentChunk structure size is wrong"); + + struct ContentInfo { + u16_be index; + u16_be command_count; + std::array<u8, 0x20> hash; + }; + + static_assert(sizeof(ContentInfo) == 0x24, "TMD ContentInfo structure size is wrong"); + +#pragma pack(push, 1) + + struct Body { + std::array<u8, 0x40> issuer; + u8 version; + u8 ca_crl_version; + u8 signer_crl_version; + u8 reserved; + u64_be system_version; + u64_be title_id; + u32_be title_type; + u16_be group_id; + u32_be savedata_size; + u32_be srl_private_savedata_size; + std::array<u8, 4> reserved_2; + u8 srl_flag; + std::array<u8, 0x31> reserved_3; + u32_be access_rights; + u16_be title_version; + u16_be content_count; + u16_be boot_content; + std::array<u8, 2> reserved_4; + std::array<u8, 0x20> contentinfo_hash; + std::array<ContentInfo, 64> contentinfo; + }; + + static_assert(sizeof(Body) == 0x9C4, "TMD body structure size is wrong"); + +#pragma pack(pop) + + explicit TitleMetadata(std::string& path) : filepath(std::move(path)) {} + Loader::ResultStatus Load(); + Loader::ResultStatus Save(); + + u64 GetTitleID() const; + u32 GetTitleType() const; + u16 GetTitleVersion() const; + u64 GetSystemVersion() const; + size_t GetContentCount() const; + u32 GetBootContentID() const; + u32 GetManualContentID() const; + u32 GetDLPContentID() const; + + void SetTitleID(u64 title_id); + void SetTitleType(u32 type); + void SetTitleVersion(u16 version); + void SetSystemVersion(u64 version); + void AddContentChunk(const ContentChunk& chunk); + + void Print() const; + +private: + enum TMDContentIndex { Main = 0, Manual = 1, DLP = 2 }; + + Body tmd_body; + u32_be signature_type; + std::vector<u8> tmd_signature; + std::vector<ContentChunk> tmd_chunks; + + std::string filepath; +}; + +} // namespace FileSys diff --git a/src/core/loader/ncch.cpp b/src/core/loader/ncch.cpp index 66bc5823d..52686e364 100644 --- a/src/core/loader/ncch.cpp +++ b/src/core/loader/ncch.cpp @@ -14,6 +14,7 @@ #include "core/core.h" #include "core/file_sys/archive_selfncch.h" #include "core/file_sys/ncch_container.h" +#include "core/file_sys/title_metadata.h" #include "core/hle/kernel/process.h" #include "core/hle/kernel/resource_limit.h" #include "core/hle/service/cfg/cfg.h" @@ -49,9 +50,19 @@ static std::string GetUpdateNCCHPath(u64_le program_id) { u32 high = static_cast<u32>((program_id | UPDATE_MASK) >> 32); u32 low = static_cast<u32>((program_id | UPDATE_MASK) & 0xFFFFFFFF); - return Common::StringFromFormat("%sNintendo 3DS/%s/%s/title/%08x/%08x/content/00000000.app", - FileUtil::GetUserPath(D_SDMC_IDX).c_str(), SYSTEM_ID, SDCARD_ID, - high, low); + // TODO(shinyquagsire23): Title database should be doing this path lookup + std::string content_path = Common::StringFromFormat( + "%sNintendo 3DS/%s/%s/title/%08x/%08x/content/", FileUtil::GetUserPath(D_SDMC_IDX).c_str(), + SYSTEM_ID, SDCARD_ID, high, low); + std::string tmd_path = content_path + "00000000.tmd"; + + u32 content_id = 0; + FileSys::TitleMetadata tmd(tmd_path); + if (tmd.Load() == ResultStatus::Success) { + content_id = tmd.GetBootContentID(); + } + + return Common::StringFromFormat("%s%08x.app", content_path.c_str(), content_id); } std::pair<boost::optional<u32>, ResultStatus> AppLoader_NCCH::LoadKernelSystemMode() { |