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Make DVDLowOpenPartition actually change partitions.

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This commit is contained in:
magumagu
2014-05-29 03:38:39 -07:00
committed by JosJuice
parent d4125231f3
commit b1df4e5986
6 changed files with 57 additions and 40 deletions
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61
Source/Core/DiscIO/VolumeCreator.cpp
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@ -69,7 +69,7 @@ static const unsigned char s_master_key_korean[16] = {
0x13,0xf2,0xfe,0xfb,0xba,0x4c,0x9b,0x7e
};
static IVolume* CreateVolumeFromCryptedWiiImage(IBlobReader& _rReader, u32 _PartitionGroup, u32 _VolumeType, u32 _VolumeNum, bool Korean);
static IVolume* CreateVolumeFromCryptedWiiImage(IBlobReader& _rReader, u32 _PartitionGroup, u32 _VolumeType, u32 _VolumeNum);
EDiscType GetDiscType(IBlobReader& _rReader);
IVolume* CreateVolumeFromFilename(const std::string& _rFilename, u32 _PartitionGroup, u32 _VolumeNum)
@ -89,10 +89,7 @@ IVolume* CreateVolumeFromFilename(const std::string& _rFilename, u32 _PartitionG
case DISC_TYPE_WII_CONTAINER:
{
u8 region;
pReader->Read(0x3,1,&region);
IVolume* pVolume = CreateVolumeFromCryptedWiiImage(*pReader, _PartitionGroup, 0, _VolumeNum, region == 'K');
IVolume* pVolume = CreateVolumeFromCryptedWiiImage(*pReader, _PartitionGroup, 0, _VolumeNum);
if (pVolume == nullptr)
{
@ -140,7 +137,32 @@ bool IsVolumeWadFile(const IVolume *_rVolume)
return (Common::swap32(MagicWord) == 0x00204973 || Common::swap32(MagicWord) == 0x00206962);
}
static IVolume* CreateVolumeFromCryptedWiiImage(IBlobReader& _rReader, u32 _PartitionGroup, u32 _VolumeType, u32 _VolumeNum, bool Korean)
void VolumeKeyForParition(IBlobReader& _rReader, u64 offset, u8* VolumeKey)
{
CBlobBigEndianReader Reader(_rReader);
u8 SubKey[16];
_rReader.Read(offset + 0x1bf, 16, SubKey);
u8 IV[16];
memset(IV, 0, 16);
_rReader.Read(offset + 0x44c, 8, IV);
bool usingKoreanKey = false;
// Issue: 6813
// Magic value is at partition's offset + 0x1f1 (1byte)
// If encrypted with the Korean key, the magic value would be 1
// Otherwise it is zero
if (Reader.Read8(0x3) == 'K' && Reader.Read8(offset + 0x1f1) == 1)
usingKoreanKey = true;
aes_context AES_ctx;
aes_setkey_dec(&AES_ctx, (usingKoreanKey ? s_master_key_korean : s_master_key), 128);
aes_crypt_cbc(&AES_ctx, AES_DECRYPT, 16, IV, SubKey, VolumeKey);
}
static IVolume* CreateVolumeFromCryptedWiiImage(IBlobReader& _rReader, u32 _PartitionGroup, u32 _VolumeType, u32 _VolumeNum)
{
CBlobBigEndianReader Reader(_rReader);
@ -184,32 +206,11 @@ static IVolume* CreateVolumeFromCryptedWiiImage(IBlobReader& _rReader, u32 _Part
{
const SPartition& rPartition = PartitionGroup[_PartitionGroup].PartitionsVec.at(i);
if (rPartition.Type == _VolumeType || i == _VolumeNum)
if ((rPartition.Type == _VolumeType && (int)_VolumeNum == -1) || i == _VolumeNum)
{
u8 SubKey[16];
_rReader.Read(rPartition.Offset + 0x1bf, 16, SubKey);
u8 IV[16];
memset(IV, 0, 16);
_rReader.Read(rPartition.Offset + 0x44c, 8, IV);
bool usingKoreanKey = false;
// Issue: 6813
// Magic value is at partition's offset + 0x1f1 (1byte)
// If encrypted with the Korean key, the magic value would be 1
// Otherwise it is zero
if (Korean && Reader.Read8(rPartition.Offset + 0x1f1) == 1)
usingKoreanKey = true;
aes_context AES_ctx;
aes_setkey_dec(&AES_ctx, (usingKoreanKey ? s_master_key_korean : s_master_key), 128);
u8 VolumeKey[16];
aes_crypt_cbc(&AES_ctx, AES_DECRYPT, 16, IV, SubKey, VolumeKey);
// -1 means the caller just wanted the partition with matching type
if ((int)_VolumeNum == -1 || i == _VolumeNum)
return new CVolumeWiiCrypted(&_rReader, rPartition.Offset, VolumeKey);
VolumeKeyForParition(_rReader, rPartition.Offset, VolumeKey);
return new CVolumeWiiCrypted(&_rReader, rPartition.Offset, VolumeKey);
}
}