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Merge pull request #2975 from shinyquagsire23/archive-ncch-container-and-override 

file_sys/archive_ncch: use NCCHs/.apps instead of .romfs files, NCCH section override
This commit is contained in:
Sebastian Valle 2017-10-06 12:19:20 -05:00 committed by GitHub
parent 84c344b9b1 4887d18591
commit 74d4050924
7 changed files with 586 additions and 83 deletions
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1
src/core/CMakeLists.txt
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@ -29,6 +29,7 @@ set(SRCS
file_sys/ncch_container.cpp file_sys/ncch_container.cpp
file_sys/path_parser.cpp file_sys/path_parser.cpp
file_sys/savedata_archive.cpp file_sys/savedata_archive.cpp
file_sys/title_metadata.cpp
frontend/camera/blank_camera.cpp frontend/camera/blank_camera.cpp
frontend/camera/factory.cpp frontend/camera/factory.cpp
frontend/camera/interface.cpp frontend/camera/interface.cpp

29
src/core/file_sys/archive_ncch.cpp
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@ -13,7 +13,10 @@
#include "core/file_sys/archive_ncch.h" #include "core/file_sys/archive_ncch.h"
#include "core/file_sys/errors.h" #include "core/file_sys/errors.h"
#include "core/file_sys/ivfc_archive.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/hle/service/fs/archive.h"
#include "core/loader/loader.h"
//////////////////////////////////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////////////////////////////////
// FileSys namespace // 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) { 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(), u32 content_id = 0;
high, low);
// 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) 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 high = data[1];
u32 low = data[0]; u32 low = data[0];
std::string file_path = GetNCCHPath(mount_point, high, low); 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). // High Title ID of the archive: The category (https://3dbrew.org/wiki/Title_list).
constexpr u32 shared_data_archive = 0x0004009B; constexpr u32 shared_data_archive = 0x0004009B;
constexpr u32 system_data_archive = 0x000400DB; constexpr u32 system_data_archive = 0x000400DB;
@ -74,9 +92,8 @@ ResultVal<std::unique_ptr<ArchiveBackend>> ArchiveFactory_NCCH::Open(const Path&
} }
return ERROR_NOT_FOUND; 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)); return MakeResult<std::unique_ptr<ArchiveBackend>>(std::move(archive));
} }

255
src/core/file_sys/ncch_container.cpp
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@ -116,92 +116,143 @@ Loader::ResultStatus NCCHContainer::Load() {
if (is_loaded) if (is_loaded)
return Loader::ResultStatus::Success; return Loader::ResultStatus::Success;
// Reset read pointer in case this file has been read before. if (file.IsOpen()) {
file.Seek(0, SEEK_SET); // 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)) 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));
}
// Verify we are loading the correct file type...
if (Loader::MakeMagic('N', 'C', 'C', 'H') != ncch_header.magic)
return Loader::ResultStatus::ErrorInvalidFormat;
// 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; return Loader::ResultStatus::Error;
is_compressed = (exheader_header.codeset_info.flags.flag & 1) == 1; // Skip NCSD header and load first NCCH (NCSD is just a container of NCCH files)...
u32 entry_point = exheader_header.codeset_info.text.address; if (Loader::MakeMagic('N', 'C', 'S', 'D') == ncch_header.magic) {
u32 code_size = exheader_header.codeset_info.text.code_size; LOG_DEBUG(Service_FS, "Only loading the first (bootable) NCCH within the NCSD file!");
u32 stack_size = exheader_header.codeset_info.stack_size; ncch_offset = 0x4000;
u32 bss_size = exheader_header.codeset_info.bss_size; file.Seek(ncch_offset, SEEK_SET);
u32 core_version = exheader_header.arm11_system_local_caps.core_version; file.ReadBytes(&ncch_header, sizeof(NCCH_Header));
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;
} }
has_exheader = true; // 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;
}
has_exheader = 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;
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;
}
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 LoadOverrides();
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); // We need at least one of these or overrides, practically
LOG_DEBUG(Service_FS, "ExeFS size: 0x%08X", exefs_size); 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;
has_exefs = true;
}
if (ncch_header.romfs_offset != 0 && ncch_header.romfs_size != 0)
has_romfs = true;
is_loaded = true; is_loaded = true;
return Loader::ResultStatus::Success; return Loader::ResultStatus::Success;
} }
Loader::ResultStatus NCCHContainer::LoadSectionExeFS(const char* name, std::vector<u8>& buffer) { Loader::ResultStatus NCCHContainer::LoadOverrides() {
if (!file.IsOpen()) // Check for split-off files, mark the archive as tainted if we will use them
return Loader::ResultStatus::Error; std::string romfs_override = filepath + ".romfs";
if (FileUtil::Exists(romfs_override)) {
is_tainted = 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());
return Loader::ResultStatus::Success;
}
Loader::ResultStatus NCCHContainer::LoadSectionExeFS(const char* name, std::vector<u8>& buffer) {
Loader::ResultStatus result = Load(); Loader::ResultStatus result = Load();
if (result != Loader::ResultStatus::Success) if (result != Loader::ResultStatus::Success)
return result; return result;
if (!has_exefs) // Check if we have files that can drop-in and replace
return Loader::ResultStatus::ErrorNotUsed; 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); LOG_DEBUG(Service_FS, "%d sections:", kMaxSections);
// Iterate through the ExeFs archive until we find a section with the specified name... // 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 = s64 section_offset =
(section.offset + exefs_offset + sizeof(ExeFs_Header) + ncch_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) { if (strcmp(section.name, ".code") == 0 && is_compressed) {
// Section is compressed, read compressed .code section... // Section is compressed, read compressed .code section...
@ -226,7 +277,7 @@ Loader::ResultStatus NCCHContainer::LoadSectionExeFS(const char* name, std::vect
return Loader::ResultStatus::ErrorMemoryAllocationFailed; 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; return Loader::ResultStatus::Error;
// Decompress .code section... // Decompress .code section...
@ -237,7 +288,7 @@ Loader::ResultStatus NCCHContainer::LoadSectionExeFS(const char* name, std::vect
} else { } else {
// Section is uncompressed... // Section is uncompressed...
buffer.resize(section.size); 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::Error;
} }
return Loader::ResultStatus::Success; return Loader::ResultStatus::Success;
@ -246,20 +297,56 @@ Loader::ResultStatus NCCHContainer::LoadSectionExeFS(const char* name, std::vect
return Loader::ResultStatus::ErrorNotUsed; return Loader::ResultStatus::ErrorNotUsed;
} }
Loader::ResultStatus NCCHContainer::ReadRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file, Loader::ResultStatus NCCHContainer::LoadOverrideExeFSSection(const char* name,
u64& offset, u64& size) { std::vector<u8>& buffer) {
if (!file.IsOpen()) 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; 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(); Loader::ResultStatus result = Load();
if (result != Loader::ResultStatus::Success) if (result != Loader::ResultStatus::Success)
return result; return result;
if (ReadOverrideRomFS(romfs_file, offset, size) == Loader::ResultStatus::Success)
return Loader::ResultStatus::Success;
if (!has_romfs) { if (!has_romfs) {
LOG_DEBUG(Service_FS, "RomFS requested from NCCH which has no RomFS"); LOG_DEBUG(Service_FS, "RomFS requested from NCCH which has no RomFS");
return Loader::ResultStatus::ErrorNotUsed; return Loader::ResultStatus::ErrorNotUsed;
} }
if (!file.IsOpen())
return Loader::ResultStatus::Error;
u32 romfs_offset = ncch_offset + (ncch_header.romfs_offset * kBlockSize) + 0x1000; u32 romfs_offset = ncch_offset + (ncch_header.romfs_offset * kBlockSize) + 0x1000;
u32 romfs_size = (ncch_header.romfs_size * 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; 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 NCCHContainer::ReadProgramId(u64_le& program_id) {
Loader::ResultStatus result = Load(); Loader::ResultStatus result = Load();
if (result != Loader::ResultStatus::Success) if (result != Loader::ResultStatus::Success)
return result; return result;
if (!has_header)
return Loader::ResultStatus::ErrorNotUsed;
program_id = ncch_header.program_id; program_id = ncch_header.program_id;
return Loader::ResultStatus::Success; return Loader::ResultStatus::Success;
} }

30
src/core/file_sys/ncch_container.h
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@ -179,6 +179,13 @@ public:
*/ */
Loader::ResultStatus Load(); 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.) * 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 name Name of section to read out of NCCH file
@ -187,6 +194,15 @@ public:
*/ */
Loader::ResultStatus LoadSectionExeFS(const char* name, std::vector<u8>& buffer); 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 * Get the RomFS of the NCCH container
* Since the RomFS can be huge, we return a file reference instead of copying to a buffer * Since the RomFS can be huge, we return a file reference instead of copying to a buffer
@ -198,6 +214,17 @@ public:
Loader::ResultStatus ReadRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file, u64& offset, Loader::ResultStatus ReadRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file, u64& offset,
u64& size); 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 * Get the Program ID of the NCCH container
* @return ResultStatus result of function * @return ResultStatus result of function
@ -227,10 +254,12 @@ public:
ExHeader_Header exheader_header; ExHeader_Header exheader_header;
private: private:
bool has_header = false;
bool has_exheader = false; bool has_exheader = false;
bool has_exefs = false; bool has_exefs = false;
bool has_romfs = false; bool has_romfs = false;
bool is_tainted = false; // Are there parts of this container being overridden?
bool is_loaded = false; bool is_loaded = false;
bool is_compressed = false; bool is_compressed = false;
@ -239,6 +268,7 @@ private:
std::string filepath; std::string filepath;
FileUtil::IOFile file; FileUtil::IOFile file;
FileUtil::IOFile exefs_file;
}; };
} // namespace FileSys } // namespace FileSys

212
src/core/file_sys/title_metadata.cpp Normal file
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@ -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

125
src/core/file_sys/title_metadata.h Normal file
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@ -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

17
src/core/loader/ncch.cpp
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@ -14,6 +14,7 @@
#include "core/core.h" #include "core/core.h"
#include "core/file_sys/archive_selfncch.h" #include "core/file_sys/archive_selfncch.h"
#include "core/file_sys/ncch_container.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/process.h"
#include "core/hle/kernel/resource_limit.h" #include "core/hle/kernel/resource_limit.h"
#include "core/hle/service/cfg/cfg.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 high = static_cast<u32>((program_id | UPDATE_MASK) >> 32);
u32 low = static_cast<u32>((program_id | UPDATE_MASK) & 0xFFFFFFFF); u32 low = static_cast<u32>((program_id | UPDATE_MASK) & 0xFFFFFFFF);
return Common::StringFromFormat("%sNintendo 3DS/%s/%s/title/%08x/%08x/content/00000000.app", // TODO(shinyquagsire23): Title database should be doing this path lookup
FileUtil::GetUserPath(D_SDMC_IDX).c_str(), SYSTEM_ID, SDCARD_ID, std::string content_path = Common::StringFromFormat(
high, low); "%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() { std::pair<boost::optional<u32>, ResultStatus> AppLoader_NCCH::LoadKernelSystemMode() {