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// Copyright 2013 Dolphin Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include "NANDContentLoader.h"
#include <algorithm>
#include <cctype>
#include "MathUtil.h"
#include "FileUtil.h"
#include "Log.h"
#include "WiiWad.h"
namespace DiscIO
{
class CBlobBigEndianReader
{
public:
CBlobBigEndianReader(DiscIO::IBlobReader& _rReader) : m_rReader(_rReader) {}
u32 Read32(u64 _Offset)
{
u32 Temp;
m_rReader.Read(_Offset, 4, (u8*)&Temp);
return(Common::swap32(Temp));
}
private:
DiscIO::IBlobReader& m_rReader;
};
WiiWAD::WiiWAD(const std::string& _rName)
{
DiscIO::IBlobReader* pReader = DiscIO::CreateBlobReader(_rName.c_str());
if (pReader == NULL || File::IsDirectory(_rName))
{
m_Valid = false;
if(pReader) delete pReader;
return;
}
m_Valid = ParseWAD(*pReader);
delete pReader;
}
WiiWAD::~WiiWAD()
{
if (m_Valid)
{
delete m_pCertificateChain;
delete m_pTicket;
delete m_pTMD;
delete m_pDataApp;
delete m_pFooter;
}
}
u8* WiiWAD::CreateWADEntry(DiscIO::IBlobReader& _rReader, u32 _Size, u64 _Offset)
{
if (_Size > 0)
{
u8* pTmpBuffer = new u8[_Size];
_dbg_assert_msg_(BOOT, pTmpBuffer!=0, "WiiWAD: Cant allocate memory for WAD entry");
if (!_rReader.Read(_Offset, _Size, pTmpBuffer))
{
ERROR_LOG(DISCIO, "WiiWAD: Could not read from file");
PanicAlertT("WiiWAD: Could not read from file");
}
return pTmpBuffer;
}
return NULL;
}
bool WiiWAD::ParseWAD(DiscIO::IBlobReader& _rReader)
{
CBlobBigEndianReader ReaderBig(_rReader);
// get header size
u32 HeaderSize = ReaderBig.Read32(0);
if (HeaderSize != 0x20)
{
_dbg_assert_msg_(BOOT, (HeaderSize==0x20), "WiiWAD: Header size != 0x20");
return false;
}
// get header
u8 Header[0x20];
_rReader.Read(0, HeaderSize, Header);
u32 HeaderType = ReaderBig.Read32(0x4);
if ((0x49730000 != HeaderType) && (0x69620000 != HeaderType))
return false;
m_CertificateChainSize = ReaderBig.Read32(0x8);
u32 Reserved = ReaderBig.Read32(0xC);
m_TicketSize = ReaderBig.Read32(0x10);
m_TMDSize = ReaderBig.Read32(0x14);
m_DataAppSize = ReaderBig.Read32(0x18);
m_FooterSize = ReaderBig.Read32(0x1C);
#if MAX_LOGLEVEL >= DEBUG_LEVEL
_dbg_assert_msg_(BOOT, Reserved==0x00, "WiiWAD: Reserved must be 0x00");
#else
(void)Reserved;
#endif
u32 Offset = 0x40;
m_pCertificateChain = CreateWADEntry(_rReader, m_CertificateChainSize, Offset); Offset += ROUND_UP(m_CertificateChainSize, 0x40);
m_pTicket = CreateWADEntry(_rReader, m_TicketSize, Offset); Offset += ROUND_UP(m_TicketSize, 0x40);
m_pTMD = CreateWADEntry(_rReader, m_TMDSize, Offset); Offset += ROUND_UP(m_TMDSize, 0x40);
m_pDataApp = CreateWADEntry(_rReader, m_DataAppSize, Offset); Offset += ROUND_UP(m_DataAppSize, 0x40);
m_pFooter = CreateWADEntry(_rReader, m_FooterSize, Offset); Offset += ROUND_UP(m_FooterSize, 0x40);
return true;
}
bool WiiWAD::IsWiiWAD(const std::string& _rName)
{
DiscIO::IBlobReader* pReader = DiscIO::CreateBlobReader(_rName.c_str());
if (pReader == NULL)
return false;
CBlobBigEndianReader Reader(*pReader);
bool Result = false;
// check for wii wad
if (Reader.Read32(0x00) == 0x20)
{
u32 WADTYpe = Reader.Read32(0x04);
switch(WADTYpe)
{
case 0x49730000:
case 0x69620000:
Result = true;
}
}
delete pReader;
return Result;
}
} // namespace end
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