bool FSeek(FILE* a_fpFile, n64 a_nOffset)
{
if (fflush(a_fpFile) != 0)
{
return false;
}
int nFd = FFileno(a_fpFile);
if (nFd == -1)
{
return false;
}
FFseek(a_fpFile, 0, SEEK_END);
n64 nFileSize = FFtell(a_fpFile);
if (nFileSize < a_nOffset)
{
n64 nOffset = FLseek(nFd, a_nOffset - 1, SEEK_SET);
if (nOffset == -1)
{
return false;
}
fputc(0, a_fpFile);
fflush(a_fpFile);
}
else
{
FFseek(a_fpFile, a_nOffset, SEEK_SET);
}
return true;
}
bool C3dsTool::compressFile()
{
FILE* fp = FFopen(m_pFileName, "rb");
bool bReuslt = fp != nullptr;
if (bReuslt)
{
FFseek(fp, 0, SEEK_END);
u32 uUncompressedSize = static_cast<u32>(FFtell(fp));
FFseek(fp, 0, SEEK_SET);
u8* pUncompressed = new u8[uUncompressedSize];
fread(pUncompressed, 1, uUncompressedSize, fp);
fclose(fp);
u32 uCompressedSize = 0;
switch (m_eCompressType)
{
case kCompressTypeBlz:
uCompressedSize = uUncompressedSize;
break;
case kCompressTypeLz:
case kCompressTypeLzEx:
uCompressedSize = CLz77::GetCompressBoundSize(uUncompressedSize, m_nCompressAlign);
break;
default:
break;
}
u8* pCompressed = new u8[uCompressedSize];
switch (m_eCompressType)
{
case kCompressTypeBlz:
bReuslt = CBackwardLz77::Compress(pUncompressed, uUncompressedSize, pCompressed, uCompressedSize);
break;
case kCompressTypeLz:
bReuslt = CLz77::CompressLz(pUncompressed, uUncompressedSize, pCompressed, uCompressedSize, m_nCompressAlign);
break;
case kCompressTypeLzEx:
bReuslt = CLz77::CompressLzEx(pUncompressed, uUncompressedSize, pCompressed, uCompressedSize, m_nCompressAlign);
break;
default:
break;
}
if (bReuslt)
{
fp = FFopen(m_pCompressOutFileName, "wb");
bReuslt = fp != nullptr;
if (bReuslt)
{
fwrite(pCompressed, 1, uCompressedSize, fp);
fclose(fp);
}
}
else
{
printf("ERROR: compress error\n\n");
}
delete[] pCompressed;
delete[] pUncompressed;
}
return bReuslt;
}
bool FEncryptAesCtrFile(const char* a_pDataFileName, u8 a_uKey[16], u8 a_uAesCtr[16], n64 a_nDataOffset, n64 a_nDataSize, bool a_bDataFileAll, bool a_bVerbose)
{
FILE* fpData = FFopen(a_pDataFileName, "rb+");
if (fpData == nullptr)
{
return false;
}
FFseek(fpData, 0, SEEK_END);
n64 nDataSize = FFtell(fpData);
if (nDataSize < a_nDataOffset)
{
fclose(fpData);
printf("ERROR: data file %s size less than data offset\n\n", a_pDataFileName);
return false;
}
if (a_bDataFileAll)
{
a_nDataSize = nDataSize - a_nDataOffset;
}
if (nDataSize < a_nDataOffset + a_nDataSize)
{
if (a_bVerbose)
{
fclose(fpData);
printf("ERROR: data file %s size less than data offset + data size\n\n", a_pDataFileName);
return false;
}
a_nDataSize = nDataSize - a_nDataOffset;
}
AES_KEY aesKey;
AES_set_encrypt_key(a_uKey, 128, &aesKey);
u8 uEcountBuf[16] = {};
u32 nNum = 0;
n64 nIndex = 0;
const n64 nBufferSize = 0x100000;
u8* pInBuffer = new u8[nBufferSize];
u8* pOutBuffer = new u8[nBufferSize];
while (a_nDataSize > 0)
{
n64 nSize = a_nDataSize > nBufferSize ? nBufferSize : a_nDataSize;
FFseek(fpData, a_nDataOffset + nIndex * nBufferSize, SEEK_SET);
fread(pInBuffer, 1, static_cast<size_t>(nSize), fpData);
AES_ctr128_encrypt(pInBuffer, pOutBuffer, static_cast<size_t>(nSize), &aesKey, a_uAesCtr, uEcountBuf, &nNum);
FFseek(fpData, a_nDataOffset + nIndex * nBufferSize, SEEK_SET);
fwrite(pOutBuffer, 1, static_cast<size_t>(nSize), fpData);
a_nDataSize -= nSize;
nIndex++;
}
delete[] pOutBuffer;
delete[] pInBuffer;
fclose(fpData);
return true;
}
bool FEncryptXorData(void* a_pData, const char* a_pXorFileName, n64 a_nDataSize, n64 a_nXorOffset, bool a_bVerbose)
{
FILE* fpXor = FFopen(a_pXorFileName, "rb");
if (fpXor == nullptr)
{
return false;
}
FFseek(fpXor, 0, SEEK_END);
n64 nXorSize = FFtell(fpXor);
if (nXorSize - a_nXorOffset < a_nDataSize)
{
if (a_bVerbose)
{
fclose(fpXor);
printf("ERROR: xor file %s size less than data size\n\n", a_pXorFileName);
return false;
}
a_nDataSize = nXorSize - a_nXorOffset;
}
FFseek(fpXor, a_nXorOffset, SEEK_SET);
n64 nIndex = 0;
const n64 nBufferSize = 0x100000;
u8* pXorBuffer = new u8[nBufferSize];
while (a_nDataSize > 0)
{
n64 nSize = a_nDataSize > nBufferSize ? nBufferSize : a_nDataSize;
fread(pXorBuffer, 1, static_cast<size_t>(nSize), fpXor);
u64* pDataBuffer64 = reinterpret_cast<u64*>(static_cast<u8*>(a_pData) + nIndex * nBufferSize);
u64* pXorBuffer64 = reinterpret_cast<u64*>(pXorBuffer);
n64 nXorCount = nSize / 8;
for (n64 i = 0; i < nXorCount; i++)
{
*pDataBuffer64++ ^= *pXorBuffer64++;
}
int nRemain = nSize % 8;
if (nRemain != 0)
{
u8* pDataBuffer8 = reinterpret_cast<u8*>(pDataBuffer64);
u8* pXorBuffer8 = reinterpret_cast<u8*>(pXorBuffer64);
for (n64 i = 0; i < nRemain; i++)
{
*pDataBuffer8++ ^= *pXorBuffer8++;
}
}
a_nDataSize -= nSize;
nIndex++;
}
delete[] pXorBuffer;
fclose(fpXor);
return true;
}
bool FEncryptXorCopyFile(FILE* a_fpDest, FILE* a_fpSrc, const char* a_pXorFileName, n64 a_nOffset, n64 a_nSize, bool a_bVerbose)
{
FILE* fpXor = FFopen(a_pXorFileName, "rb");
if (fpXor == nullptr)
{
return false;
}
FFseek(fpXor, 0, SEEK_END);
n64 nXorSize = FFtell(fpXor);
if (nXorSize < a_nSize && a_bVerbose)
{
fclose(fpXor);
printf("ERROR: xor file %s size less than data size\n\n", a_pXorFileName);
return false;
}
FFseek(fpXor, 0, SEEK_SET);
const n64 nBufferSize = 0x100000;
u8* pDataBuffer = new u8[nBufferSize];
u8* pXorBuffer = new u8[nBufferSize];
FFseek(a_fpSrc, a_nOffset, SEEK_SET);
while (a_nSize > 0)
{
n64 nSize = a_nSize > nBufferSize ? nBufferSize : a_nSize;
fread(pDataBuffer, 1, static_cast<size_t>(nSize), a_fpSrc);
fread(pXorBuffer, 1, static_cast<size_t>(nSize), fpXor);
u64* pDataBuffer64 = reinterpret_cast<u64*>(pDataBuffer);
u64* pXorBuffer64 = reinterpret_cast<u64*>(pXorBuffer);
n64 nXorCount = FAlign(nSize, 8) / 8;
for (n64 i = 0; i < nXorCount; i++)
{
*pDataBuffer64++ ^= *pXorBuffer64++;
}
fwrite(pDataBuffer, 1, static_cast<size_t>(nSize), a_fpDest);
a_nSize -= nSize;
}
delete[] pXorBuffer;
delete[] pDataBuffer;
fclose(fpXor);
return true;
}
void FCopyFile(FILE* a_fpDest, FILE* a_fpSrc, n64 a_nSrcOffset, n64 a_nSize)
{
const n64 nBufferSize = 0x100000;
u8* pBuffer = new u8[nBufferSize];
FFseek(a_fpSrc, a_nSrcOffset, SEEK_SET);
while (a_nSize > 0)
{
n64 nSize = a_nSize > nBufferSize ? nBufferSize : a_nSize;
fread(pBuffer, 1, static_cast<size_t>(nSize), a_fpSrc);
fwrite(pBuffer, 1, static_cast<size_t>(nSize), a_fpDest);
a_nSize -= nSize;
}
delete[] pBuffer;
}
void FEncryptAesCtrCopyFile(FILE* a_fpDest, FILE* a_fpSrc, u8 a_uKey[16], u8 a_uAesCtr[16], n64 a_nSrcOffset, n64 a_nSize, bool a_bVerbose)
{
AES_KEY aesKey;
AES_set_encrypt_key(a_uKey, 128, &aesKey);
u8 uEcountBuf[16] = {};
u32 nNum = 0;
const n64 nBufferSize = 0x100000;
u8* pInBuffer = new u8[nBufferSize];
u8* pOutBuffer = new u8[nBufferSize];
FFseek(a_fpSrc, a_nSrcOffset, SEEK_SET);
while (a_nSize > 0)
{
n64 nSize = a_nSize > nBufferSize ? nBufferSize : a_nSize;
fread(pInBuffer, 1, static_cast<size_t>(nSize), a_fpSrc);
AES_ctr128_encrypt(pInBuffer, pOutBuffer, static_cast<size_t>(nSize), &aesKey, a_uAesCtr, uEcountBuf, &nNum);
fwrite(pOutBuffer, 1, static_cast<size_t>(nSize), a_fpDest);
a_nSize -= nSize;
}
delete[] pOutBuffer;
delete[] pInBuffer;
}
bool FEncryptXorFile(const char* a_pDataFileName, const char* a_pXorFileName, n64 a_nDataOffset, n64 a_nDataSize, bool a_bDataFileAll, n64 a_nXorOffset, bool a_bVerbose)
{
FILE* fpData = FFopen(a_pDataFileName, "rb+");
if (fpData == nullptr)
{
return false;
}
FFseek(fpData, 0, SEEK_END);
n64 nDataSize = FFtell(fpData);
if (nDataSize < a_nDataOffset)
{
fclose(fpData);
printf("ERROR: data file %s size less than data offset\n\n", a_pDataFileName);
return false;
}
if (a_bDataFileAll)
{
a_nDataSize = nDataSize - a_nDataOffset;
}
if (nDataSize < a_nDataOffset + a_nDataSize)
{
if (a_bVerbose)
{
fclose(fpData);
printf("ERROR: data file %s size less than data offset + data size\n\n", a_pDataFileName);
return false;
}
a_nDataSize = nDataSize - a_nDataOffset;
}
FILE* fpXor = FFopen(a_pXorFileName, "rb");
if (fpXor == nullptr)
{
fclose(fpData);
return false;
}
FFseek(fpXor, 0, SEEK_END);
n64 nXorSize = FFtell(fpXor);
if (nXorSize - a_nXorOffset < a_nDataSize)
{
if (a_bVerbose)
{
fclose(fpXor);
fclose(fpData);
printf("ERROR: xor file %s size less than data size\n\n", a_pXorFileName);
return false;
}
a_nDataSize = nXorSize - a_nXorOffset;
}
FFseek(fpXor, a_nXorOffset, SEEK_SET);
n64 nIndex = 0;
const n64 nBufferSize = 0x100000;
u8* pDataBuffer = new u8[nBufferSize];
u8* pXorBuffer = new u8[nBufferSize];
while (a_nDataSize > 0)
{
n64 nSize = a_nDataSize > nBufferSize ? nBufferSize : a_nDataSize;
FFseek(fpData, a_nDataOffset + nIndex * nBufferSize, SEEK_SET);
fread(pDataBuffer, 1, static_cast<size_t>(nSize), fpData);
fread(pXorBuffer, 1, static_cast<size_t>(nSize), fpXor);
u64* pDataBuffer64 = reinterpret_cast<u64*>(pDataBuffer);
u64* pXorBuffer64 = reinterpret_cast<u64*>(pXorBuffer);
n64 nXorCount = FAlign(nSize, 8) / 8;
for (n64 i = 0; i < nXorCount; i++)
{
*pDataBuffer64++ ^= *pXorBuffer64++;
}
FFseek(fpData, a_nDataOffset + nIndex * nBufferSize, SEEK_SET);
fwrite(pDataBuffer, 1, static_cast<size_t>(nSize), fpData);
a_nDataSize -= nSize;
nIndex++;
}
delete[] pXorBuffer;
delete[] pDataBuffer;
fclose(fpXor);
fclose(fpData);
return true;
}