hlBool CDirectoryFile::Extract(const hlChar *lpPath) const
{
hlExtractItemStart(this);
hlChar *lpName = new hlChar[strlen(this->GetName()) + 1];
strcpy(lpName, this->GetName());
RemoveIllegalCharacters(lpName);
hlChar *lpFileName;
if(lpPath == 0 || *lpPath == '\0')
{
lpFileName = new hlChar[strlen(lpName) + 1];
strcpy(lpFileName, lpName);
}
else
{
lpFileName = new hlChar[strlen(lpPath) + 1 + strlen(lpName) + 1];
strcpy(lpFileName, lpPath);
strcat(lpFileName, PATH_SEPARATOR_STRING);
strcat(lpFileName, lpName);
}
FixupIllegalCharacters(lpFileName);
hlBool bResult;
if(!bOverwriteFiles && GetFileExists(lpFileName))
{
bResult = hlTrue;
}
else
{
bResult = hlFalse;
Streams::IStream *pInput = 0;
if(this->GetPackage()->CreateStream(this, pInput))
{
if(pInput->Open(HL_MODE_READ))
{
Streams::CFileStream Output = Streams::CFileStream(lpFileName);
if(Output.Open(HL_MODE_WRITE | HL_MODE_CREATE))
{
hlUInt uiTotalBytes = 0, uiFileBytes = this->GetSize();
hlByte lpBuffer[HL_DEFAULT_COPY_BUFFER_SIZE];
hlBool bCancel = hlFalse;
hlExtractFileProgress(this, uiTotalBytes, uiFileBytes, &bCancel);
while(hlTrue)
{
if(bCancel)
{
LastError.SetErrorMessage("Canceled by user.");
}
hlUInt uiBytes = pInput->Read(lpBuffer, sizeof(lpBuffer));
if(uiBytes == 0)
{
bResult = uiTotalBytes == pInput->GetStreamSize();
break;
}
if(Output.Write(lpBuffer, uiBytes) != uiBytes)
{
break;
}
uiTotalBytes += uiBytes;
hlExtractFileProgress(this, uiTotalBytes, uiFileBytes, &bCancel);
}
Output.Close();
}
pInput->Close();
}
this->GetPackage()->ReleaseStream(pInput);
}
}
delete []lpFileName;
delete []lpName;
hlExtractItemEnd(this, bResult);
return bResult;
}
hlBool CVPKFile::GetFileValidationInternal(const CDirectoryFile *pFile, HLValidation &eValidation) const
{
hlBool bExtractable = hlFalse;
if(GetFileExtractableInternal(pFile, bExtractable))
{
if(bExtractable)
{
Streams::IStream *pStream = 0;
if(this->CreateStreamInternal(pFile, pStream))
{
if(pStream->Open(HL_MODE_READ))
{
hlULong uiChecksum = 0;
eValidation = HL_VALIDATES_OK;
hlULongLong uiTotalBytes = 0, uiFileBytes = pStream->GetStreamSize();
hlUInt uiBufferSize;
hlByte lpBuffer[HL_VPK_CHECKSUM_LENGTH];
hlBool bCancel = hlFalse;
hlValidateFileProgress(const_cast<CDirectoryFile *>(pFile), uiTotalBytes, uiFileBytes, &bCancel);
while((uiBufferSize = pStream->Read(lpBuffer, HL_VPK_CHECKSUM_LENGTH)) != 0)
{
if(bCancel)
{
// User canceled.
eValidation = HL_VALIDATES_CANCELED;
break;
}
uiChecksum = CRC32(lpBuffer, uiBufferSize, uiChecksum);
uiTotalBytes += static_cast<hlULongLong>(uiBufferSize);
hlValidateFileProgress(const_cast<CDirectoryFile *>(pFile), uiTotalBytes, uiFileBytes, &bCancel);
}
if(!bCancel)
{
const VPKDirectoryItem *pDirectoryItem = static_cast<const VPKDirectoryItem *>(pFile->GetData());
if(pDirectoryItem->pDirectoryEntry->uiCRC != uiChecksum)
{
eValidation = HL_VALIDATES_CORRUPT;
}
}
pStream->Close();
}
else
{
eValidation = HL_VALIDATES_ERROR;
}
this->ReleaseStreamInternal(*pStream);
delete pStream;
}
else
{
eValidation = HL_VALIDATES_ERROR;
}
}
else
{
eValidation = HL_VALIDATES_INCOMPLETE;
}
}
else
{
eValidation = HL_VALIDATES_ERROR;
}
return hlTrue;
}
hlBool CGCFFile::GetFileValidationInternal(const CDirectoryFile *pFile, HLValidation &eValidation) const
{
// Do we have enough data to validate?
{
hlUInt uiSize = 0;
// Get the first data block.
hlUInt uiBlockEntryIndex = this->lpDirectoryMapEntries[pFile->GetID()].uiFirstBlockIndex;
// Loop through each data block.
while(uiBlockEntryIndex != this->pDataBlockHeader->uiBlockCount)
{
uiSize += this->lpBlockEntries[uiBlockEntryIndex].uiFileDataSize;
// Get the next data block.
uiBlockEntryIndex = this->lpBlockEntries[uiBlockEntryIndex].uiNextBlockEntryIndex;
}
if(uiSize != this->lpDirectoryEntries[pFile->GetID()].uiItemSize)
{
// File is incomplete.
eValidation = HL_VALIDATES_INCOMPLETE;
return hlTrue;
}
}
if((this->lpDirectoryEntries[pFile->GetID()].uiDirectoryFlags & HL_GCF_FLAG_ENCRYPTED) != 0)
{
// No way of checking, assume it's ok.
eValidation = HL_VALIDATES_ASSUMED_OK;
return hlTrue;
}
// File has no checksum.
if(this->lpDirectoryEntries[pFile->GetID()].uiChecksumIndex == 0xffffffff)
{
eValidation = HL_VALIDATES_ASSUMED_OK;
return hlTrue;
}
Streams::IStream *pStream = 0;
if(this->CreateStreamInternal(pFile, pStream))
{
if(pStream->Open(HL_MODE_READ))
{
eValidation = HL_VALIDATES_OK;
hlULongLong uiTotalBytes = 0, uiFileBytes = pStream->GetStreamSize();
hlUInt uiBufferSize;
hlByte lpBuffer[HL_GCF_CHECKSUM_LENGTH];
const GCFChecksumMapEntry *pChecksumMapEntry = this->lpChecksumMapEntries + this->lpDirectoryEntries[pFile->GetID()].uiChecksumIndex;
hlBool bCancel = hlFalse;
hlValidateFileProgress(const_cast<CDirectoryFile *>(pFile), uiTotalBytes, uiFileBytes, &bCancel);
hlUInt i = 0;
while((uiBufferSize = pStream->Read(lpBuffer, HL_GCF_CHECKSUM_LENGTH)) != 0)
{
if(bCancel)
{
// User canceled.
eValidation = HL_VALIDATES_CANCELED;
break;
}
if(i >= pChecksumMapEntry->uiChecksumCount)
{
// Something bad happened.
eValidation = HL_VALIDATES_ERROR;
break;
}
hlULong uiChecksum = Adler32(lpBuffer, uiBufferSize) ^ CRC32(lpBuffer, uiBufferSize);
if(uiChecksum != this->lpChecksumEntries[pChecksumMapEntry->uiFirstChecksumIndex + i].uiChecksum)
{
eValidation = HL_VALIDATES_CORRUPT;
break;
}
uiTotalBytes += static_cast<hlULongLong>(uiBufferSize);
hlValidateFileProgress(const_cast<CDirectoryFile *>(pFile), uiTotalBytes, uiFileBytes, &bCancel);
i++;
}
pStream->Close();
}
else
{
eValidation = HL_VALIDATES_ERROR;
}
this->ReleaseStreamInternal(*pStream);
delete pStream;
}
else
{
eValidation = HL_VALIDATES_ERROR;
}
return hlTrue;
}