297 lines
8.4 KiB
C++
297 lines
8.4 KiB
C++
// Copyright (C) 2003-2008 Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#include "stdafx.h"
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#include "NANDContentLoader.h"
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#include "AES/aes.h"
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#include "MathUtil.h"
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#include "FileUtil.h"
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#include "Log.h"
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namespace DiscIO
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{
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class CBlobBigEndianReader
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{
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public:
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CBlobBigEndianReader(DiscIO::IBlobReader& _rReader) : m_rReader(_rReader) {}
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u32 Read32(u64 _Offset)
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{
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u32 Temp;
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m_rReader.Read(_Offset, 4, (u8*)&Temp);
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return(Common::swap32(Temp));
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}
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private:
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DiscIO::IBlobReader& m_rReader;
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};
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CNANDContentLoader::CNANDContentLoader(const std::string& _rName)
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: m_TitleID(-1)
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, m_BootIndex(-1)
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, m_Valid(false)
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{
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if (File::IsDirectory(_rName.c_str()))
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{
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m_Valid = CreateFromDirectory(_rName);
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}
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else if (File::Exists(_rName.c_str()))
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{
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m_Valid = CreateFromWAD(_rName);
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}
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else
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{
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// _dbg_assert_msg_(BOOT, 0, "CNANDContentLoader loads neither folder nor file");
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}
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}
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CNANDContentLoader::~CNANDContentLoader()
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{
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for (size_t i=0; i<m_Content.size(); i++)
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{
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delete [] m_Content[i].m_pData;
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}
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m_Content.clear();
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}
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SNANDContent* CNANDContentLoader::GetContentByIndex(int _Index)
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{
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for (size_t i=0; i<m_Content.size(); i++)
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{
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if (m_Content[i].m_Index == _Index)
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return &m_Content[i];
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}
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return NULL;
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}
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bool CNANDContentLoader::CreateFromWAD(const std::string& _rName)
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{
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DiscIO::IBlobReader* pReader = DiscIO::CreateBlobReader(_rName.c_str());
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if (pReader == NULL)
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return false;
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bool Result = ParseWAD(*pReader);
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delete pReader;
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return Result;
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}
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bool CNANDContentLoader::CreateFromDirectory(const std::string& _rPath)
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{
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std::string TMDFileName(_rPath);
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TMDFileName += "/title.tmd";
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FILE* pTMDFile = fopen(TMDFileName.c_str(), "rb");
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if (pTMDFile == NULL) {
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ERROR_LOG(DISCIO, "CreateFromDirectory: error opening %s",
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TMDFileName.c_str());
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return false;
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}
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u64 Size = File::GetSize(TMDFileName.c_str());
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u8* pTMD = new u8[Size];
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fread(pTMD, Size, 1, pTMDFile);
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fclose(pTMDFile);
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//////
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u32 numEntries = Common::swap16(pTMD + 0x01de);
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m_BootIndex = Common::swap16(pTMD + 0x01e0);
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m_TitleID = Common::swap64(pTMD + 0x018C);
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m_Content.resize(numEntries);
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for (u32 i = 0; i < numEntries; i++)
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{
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SNANDContent& rContent = m_Content[i];
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rContent.m_ContentID = Common::swap32(pTMD + 0x01e4 + 0x24*i);
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rContent.m_Index = Common::swap16(pTMD + 0x01e8 + 0x24*i);
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rContent.m_Type = Common::swap16(pTMD + 0x01ea + 0x24*i);
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rContent.m_Size = (u32)Common::swap64(pTMD + 0x01ec + 0x24*i);
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rContent.m_pData = NULL;
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char szFilename[1024];
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sprintf(szFilename, "%s/%08x.app", _rPath.c_str(), rContent.m_ContentID);
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FILE* pFile = fopen(szFilename, "rb");
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// i have seen TMDs which index to app which doesn't exist...
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if (pFile != NULL)
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{
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u64 Size = File::GetSize(szFilename);
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rContent.m_pData = new u8[Size];
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_dbg_assert_msg_(BOOT, rContent.m_Size==Size, "TMDLoader: Filesize doesnt fit (%s %i)", szFilename, i);
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fread(rContent.m_pData, Size, 1, pFile);
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fclose(pFile);
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} else {
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ERROR_LOG(DISCIO, "CreateFromDirectory: error opening %s",
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szFilename);
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}
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}
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return true;
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}
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bool CNANDContentLoader::IsWiiWAD(const std::string& _rName)
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{
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DiscIO::IBlobReader* pReader = DiscIO::CreateBlobReader(_rName.c_str());
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if (pReader == NULL)
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return false;
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CBlobBigEndianReader Reader(*pReader);
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bool Result = false;
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// check for wii wad
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if (Reader.Read32(0x00) == 0x20)
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{
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u32 WADTYpe = Reader.Read32(0x04);
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switch(WADTYpe)
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{
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case 0x49730000:
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case 0x69620000:
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Result = true;
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}
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}
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delete pReader;
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return Result;
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}
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void CNANDContentLoader::AESDecode(u8* _pKey, u8* _IV, u8* _pSrc, u32 _Size, u8* _pDest)
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{
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AES_KEY AESKey;
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AES_set_decrypt_key(_pKey, 128, &AESKey);
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AES_cbc_encrypt(_pSrc, _pDest, _Size, &AESKey, _IV, AES_DECRYPT);
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}
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u8* CNANDContentLoader::CreateWADEntry(DiscIO::IBlobReader& _rReader, u32 _Size, u64 _Offset)
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{
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if (_Size > 0)
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{
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u8* pTmpBuffer = new u8[_Size];
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_dbg_assert_msg_(BOOT, pTmpBuffer!=0, "WiiWAD: Cant allocate memory for WAD entry");
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if (!_rReader.Read(_Offset, _Size, pTmpBuffer))
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{
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ERROR_LOG(DISCIO, "WiiWAD: Could not read from file");
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PanicAlert("WiiWAD: Could not read from file");
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}
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return pTmpBuffer;
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}
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return NULL;
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}
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void CNANDContentLoader::GetKeyFromTicket(u8* pTicket, u8* pTicketKey)
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{
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u8 CommonKey[16] = {0xeb,0xe4,0x2a,0x22,0x5e,0x85,0x93,0xe4,0x48,0xd9,0xc5,0x45,0x73,0x81,0xaa,0xf7};
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u8 IV[16];
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memset(IV, 0, sizeof IV);
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memcpy(IV, pTicket + 0x01dc, 8);
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AESDecode(CommonKey, IV, pTicket + 0x01bf, 16, pTicketKey);
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}
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bool CNANDContentLoader::ParseTMD(u8* pDataApp, u32 pDataAppSize, u8* pTicket, u8* pTMD)
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{
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u8 DecryptTitleKey[16];
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u8 IV[16];
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GetKeyFromTicket(pTicket, DecryptTitleKey);
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u32 numEntries = Common::swap16(pTMD + 0x01de);
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m_BootIndex = Common::swap16(pTMD + 0x01e0);
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m_TitleID = Common::swap64(pTMD + 0x018C);
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u8* p = pDataApp;
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m_Content.resize(numEntries);
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for (u32 i=0; i<numEntries; i++)
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{
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SNANDContent& rContent = m_Content[i];
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rContent.m_ContentID = Common::swap32(pTMD + 0x01e4 + 0x24*i);
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rContent.m_Index = Common::swap16(pTMD + 0x01e8 + 0x24*i);
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rContent.m_Type = Common::swap16(pTMD + 0x01ea + 0x24*i);
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rContent.m_Size= (u32)Common::swap64(pTMD + 0x01ec + 0x24*i);
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u32 RoundedSize = ROUND_UP(rContent.m_Size, 0x40);
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rContent.m_pData = new u8[RoundedSize];
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memset(IV, 0, sizeof IV);
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memcpy(IV, pTMD + 0x01e8 + 0x24*i, 2);
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AESDecode(DecryptTitleKey, IV, p, RoundedSize, rContent.m_pData);
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p += RoundedSize;
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}
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return true;
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}
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bool CNANDContentLoader::ParseWAD(DiscIO::IBlobReader& _rReader)
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{
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CBlobBigEndianReader ReaderBig(_rReader);
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// get header size
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u32 HeaderSize = ReaderBig.Read32(0);
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if (HeaderSize != 0x20)
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{
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_dbg_assert_msg_(BOOT, (HeaderSize==0x20), "WiiWAD: Header size != 0x20");
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return false;
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}
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// get header
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u8 Header[0x20];
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_rReader.Read(0, HeaderSize, Header);
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u32 HeaderType = ReaderBig.Read32(0x4);
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if ((0x49730000 != HeaderType) && (0x69620000 != HeaderType))
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return false;
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u32 CertificateChainSize = ReaderBig.Read32(0x8);
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u32 Reserved = ReaderBig.Read32(0xC);
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u32 TicketSize = ReaderBig.Read32(0x10);
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u32 TMDSize = ReaderBig.Read32(0x14);
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u32 DataAppSize = ReaderBig.Read32(0x18);
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u32 FooterSize = ReaderBig.Read32(0x1C);
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_dbg_assert_msg_(BOOT, Reserved==0x00, "WiiWAD: Reserved must be 0x00");
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u32 Offset = 0x40;
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u8* pCertificateChain = CreateWADEntry(_rReader, CertificateChainSize, Offset); Offset += ROUND_UP(CertificateChainSize, 0x40);
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u8* pTicket = CreateWADEntry(_rReader, TicketSize, Offset); Offset += ROUND_UP(TicketSize, 0x40);
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u8* pTMD = CreateWADEntry(_rReader, TMDSize, Offset); Offset += ROUND_UP(TMDSize, 0x40);
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u8* pDataApp = CreateWADEntry(_rReader, DataAppSize, Offset); Offset += ROUND_UP(DataAppSize, 0x40);
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u8* pFooter = CreateWADEntry(_rReader, FooterSize, Offset); Offset += ROUND_UP(FooterSize, 0x40);
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bool Result = ParseTMD(pDataApp, DataAppSize, pTicket, pTMD);
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return Result;
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}
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} // namespace end
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