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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <string>
#include "common/make_unique.h"
#include "core/file_sys/archive_romfs.h"
#include "core/loader/3dsx.h"
#include "core/loader/elf.h"
#include "core/loader/ncch.h"
#include "core/hle/service/fs/archive.h"
#include "core/mem_map.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
namespace Loader {
/**
* Identifies the type of a bootable file
* @param file open file
* @return FileType of file
*/
static FileType IdentifyFile(FileUtil::IOFile& file) {
FileType type;
#define CHECK_TYPE(loader) \
type = AppLoader_##loader::IdentifyType(file); \
if (FileType::Error != type) \
return type;
CHECK_TYPE(THREEDSX)
CHECK_TYPE(ELF)
CHECK_TYPE(NCCH)
#undef CHECK_TYPE
return FileType::Unknown;
}
/**
* Guess the type of a bootable file from its extension
* @param filename String filename of bootable file
* @return FileType of file
*/
static FileType GuessFromFilename(const std::string& filename) {
if (filename.size() == 0) {
LOG_ERROR(Loader, "invalid filename %s", filename.c_str());
return FileType::Error;
}
size_t extension_loc = filename.find_last_of('.');
if (extension_loc == std::string::npos)
return FileType::Unknown;
std::string extension = Common::ToLower(filename.substr(extension_loc));
if (extension == ".elf")
return FileType::ELF;
else if (extension == ".axf")
return FileType::ELF;
else if (extension == ".cxi")
return FileType::CXI;
else if (extension == ".cci")
return FileType::CCI;
else if (extension == ".bin")
return FileType::BIN;
else if (extension == ".3ds")
return FileType::CCI;
else if (extension == ".3dsx")
return FileType::THREEDSX;
return FileType::Unknown;
}
static const char* GetFileTypeString(FileType type) {
switch (type) {
case FileType::CCI:
return "NCSD";
case FileType::CXI:
return "NCCH";
case FileType::ELF:
return "ELF";
case FileType::THREEDSX:
return "3DSX";
case FileType::BIN:
return "raw";
case FileType::Error:
case FileType::Unknown:
return "unknown";
}
}
ResultStatus LoadFile(const std::string& filename) {
std::unique_ptr<FileUtil::IOFile> file(new FileUtil::IOFile(filename, "rb"));
if (!file->IsOpen()) {
LOG_ERROR(Loader, "Failed to load file %s", filename.c_str());
return ResultStatus::Error;
}
FileType type = IdentifyFile(*file);
FileType filename_type = GuessFromFilename(filename);
if (type != filename_type) {
LOG_WARNING(Loader, "File %s has a different type than its extension.", filename.c_str());
if (FileType::Unknown == type)
type = filename_type;
}
LOG_INFO(Loader, "Loading file %s as %s...", filename.c_str(), GetFileTypeString(type));
switch (type) {
//3DSX file format...
case FileType::THREEDSX:
return AppLoader_THREEDSX(std::move(file)).Load();
// Standard ELF file format...
case FileType::ELF:
return AppLoader_ELF(std::move(file)).Load();
// NCCH/NCSD container formats...
case FileType::CXI:
case FileType::CCI:
{
AppLoader_NCCH app_loader(std::move(file));
// Load application and RomFS
if (ResultStatus::Success == app_loader.Load()) {
Kernel::g_program_id = app_loader.GetProgramId();
Service::FS::CreateArchive(Common::make_unique<FileSys::Archive_RomFS>(app_loader), Service::FS::ArchiveIdCode::RomFS);
return ResultStatus::Success;
}
break;
}
// Raw BIN file format...
case FileType::BIN:
{
size_t size = (size_t)file->GetSize();
if (file->ReadBytes(Memory::GetPointer(Memory::EXEFS_CODE_VADDR), size) != size)
return ResultStatus::Error;
Kernel::LoadExec(Memory::EXEFS_CODE_VADDR);
return ResultStatus::Success;
}
// Error occurred durring IdentifyFile...
case FileType::Error:
// IdentifyFile could know identify file type...
case FileType::Unknown:
{
LOG_CRITICAL(Loader, "File %s is of unknown type.");
return ResultStatus::ErrorInvalidFormat;
}
}
return ResultStatus::Error;
}
} // namespace Loader
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