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// Copyright (C) 2003 Dolphin Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#include "stdafx.h"
#include "VolumeWiiCrypted.h"
#include "StringUtil.h"
namespace DiscIO
{
CVolumeWiiCrypted::CVolumeWiiCrypted(IBlobReader* _pReader, u64 _VolumeOffset,
const unsigned char* _pVolumeKey)
: m_pReader(_pReader),
m_pBuffer(0),
m_VolumeOffset(_VolumeOffset),
m_LastDecryptedBlockOffset(-1)
{
AES_set_decrypt_key(_pVolumeKey, 128, &m_AES_KEY);
m_pBuffer = new u8[0x8000];
}
CVolumeWiiCrypted::~CVolumeWiiCrypted()
{
delete m_pReader; // is this really our responsibility?
m_pReader = NULL;
delete[] m_pBuffer;
m_pBuffer = NULL;
}
bool CVolumeWiiCrypted::RAWRead( u64 _Offset, u64 _Length, u8* _pBuffer ) const
{
// HyperIris: hack for DVDLowUnencryptedRead
// Medal Of Honor Heroes 2 read this DVD offset for PartitionsInfo
// and, PartitionsInfo is not encrypted, let's read it directly.
if (!m_pReader->Read(_Offset, _Length, _pBuffer))
{
return(false);
}
return true;
}
bool CVolumeWiiCrypted::Read(u64 _ReadOffset, u64 _Length, u8* _pBuffer) const
{
if (m_pReader == NULL)
{
return(false);
}
while (_Length > 0)
{
static unsigned char IV[16];
// math block offset
u64 Block = _ReadOffset / 0x7C00;
u64 Offset = _ReadOffset % 0x7C00;
// read current block
if (!m_pReader->Read(m_VolumeOffset + Block * 0x8000, 0x8000, m_pBuffer))
{
return(false);
}
if (m_LastDecryptedBlockOffset != Block)
{
memcpy(IV, m_pBuffer + 0x3d0, 16);
AES_cbc_encrypt(m_pBuffer + 0x400, m_LastDecryptedBlock, 0x7C00, &m_AES_KEY, IV, AES_DECRYPT);
m_LastDecryptedBlockOffset = Block;
}
// copy the encrypted data
u64 MaxSizeToCopy = 0x7C00 - Offset;
u64 CopySize = (_Length > MaxSizeToCopy) ? MaxSizeToCopy : _Length;
memcpy(_pBuffer, &m_LastDecryptedBlock[Offset], (size_t)CopySize);
// increase buffers
_Length -= CopySize;
_pBuffer += CopySize;
_ReadOffset += CopySize;
}
return(true);
}
bool CVolumeWiiCrypted::GetTitleID(u8* _pBuffer) const
{
return RAWRead((u64)0x0F8001DC, 8, _pBuffer);
}
std::string CVolumeWiiCrypted::GetUniqueID() const
{
if (m_pReader == NULL)
{
return(false);
}
char ID[7];
if (!Read(0, 6, (u8*)ID))
{
return(false);
}
ID[6] = 0;
return(ID);
}
IVolume::ECountry CVolumeWiiCrypted::GetCountry() const
{
if (!m_pReader)
return COUNTRY_UNKNOWN;
u8 CountryCode;
m_pReader->Read(3, 1, &CountryCode);
return CountrySwitch(CountryCode);
}
std::string CVolumeWiiCrypted::GetMakerID() const
{
if (m_pReader == NULL)
{
return(false);
}
char makerID[3];
if (!Read(0x4, 0x2, (u8*)&makerID))
{
return(false);
}
makerID[2] = 0;
return(makerID);
}
std::string CVolumeWiiCrypted::GetName() const
{
if (m_pReader == NULL)
{
return("");
}
char name[0xFF];
if (!Read(0x20, 0x60, (u8*)&name))
{
return("");
}
return(name);
}
u32 CVolumeWiiCrypted::GetFSTSize() const
{
if (m_pReader == NULL)
{
return(false);
}
u32 size;
if (!Read(0x428, 0x4, (u8*)&size))
{
return(false);
}
return(size);
}
std::string CVolumeWiiCrypted::GetApploaderDate() const
{
if (m_pReader == NULL)
{
return(false);
}
char date[16];
if (!Read(0x2440, 0x10, (u8*)&date))
{
return(false);
}
date[10] = 0;
return(date);
}
u64 CVolumeWiiCrypted::GetSize() const
{
if (m_pReader)
{
return(m_pReader->GetDataSize());
}
else
{
return(0);
}
}
} // namespace
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