aboutsummaryrefslogtreecommitdiff
path: root/src/SFileGetFileInfo.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/SFileGetFileInfo.cpp')
-rw-r--r--src/SFileGetFileInfo.cpp1341
1 files changed, 1341 insertions, 0 deletions
diff --git a/src/SFileGetFileInfo.cpp b/src/SFileGetFileInfo.cpp
new file mode 100644
index 0000000..6a85bd9
--- /dev/null
+++ b/src/SFileGetFileInfo.cpp
@@ -0,0 +1,1341 @@
+/*****************************************************************************/
+/* SFileReadFile.cpp Copyright (c) Ladislav Zezula 2003 */
+/*---------------------------------------------------------------------------*/
+/* Description : */
+/*---------------------------------------------------------------------------*/
+/* Date Ver Who Comment */
+/* -------- ---- --- ------- */
+/* xx.xx.99 1.00 Lad The first version of SFileReadFile.cpp */
+/* 24.03.99 1.00 Lad Added the SFileGetFileInfo function */
+/*****************************************************************************/
+
+#define __STORMLIB_SELF__
+#include "StormLib.h"
+#include "StormCommon.h"
+
+//-----------------------------------------------------------------------------
+// Local functions
+
+static DWORD GetMpqFileCount(TMPQArchive * ha)
+{
+ TFileEntry * pFileTableEnd;
+ TFileEntry * pFileEntry;
+ DWORD dwFileCount = 0;
+
+ // Go through all open MPQs, including patches
+ while(ha != NULL)
+ {
+ // Only count files that are not patch files
+ pFileTableEnd = ha->pFileTable + ha->dwFileTableSize;
+ for(pFileEntry = ha->pFileTable; pFileEntry < pFileTableEnd; pFileEntry++)
+ {
+ // If the file is patch file and this is not primary archive, skip it
+ // BUGBUG: This errorneously counts non-patch files that are in both
+ // base MPQ and in patches, and increases the number of files by cca 50%
+ if((pFileEntry->dwFlags & (MPQ_FILE_EXISTS | MPQ_FILE_PATCH_FILE)) == MPQ_FILE_EXISTS)
+ dwFileCount++;
+ }
+
+ // Move to the next patch archive
+ ha = ha->haPatch;
+ }
+
+ return dwFileCount;
+}
+
+static TCHAR * GetFilePatchChain(TMPQFile * hf, DWORD * pcbChainLength)
+{
+ TMPQFile * hfTemp;
+ TCHAR * szPatchChain = NULL;
+ TCHAR * szPatchItem = NULL;
+ TCHAR * szFileName;
+ size_t cchCharsNeeded = 1;
+ size_t nLength;
+
+ // Patch chain is only supported on MPQ files.
+ if(hf->pStream == NULL)
+ {
+ // Calculate the necessary length of the multi-string
+ for(hfTemp = hf; hfTemp != NULL; hfTemp->hfPatchFile)
+ cchCharsNeeded += _tcslen(FileStream_GetFileName(hfTemp->ha->pStream)) + 1;
+
+ // Allocate space for the multi-string
+ szPatchChain = szPatchItem = STORM_ALLOC(TCHAR, cchCharsNeeded);
+ if(szPatchChain != NULL)
+ {
+ // Fill-in all the names
+ for(hfTemp = hf; hfTemp != NULL; hfTemp = hfTemp->hfPatchFile)
+ {
+ szFileName = FileStream_GetFileName(hfTemp->ha->pStream);
+ nLength = _tcslen(szFileName) + 1;
+
+ memcpy(szPatchItem, szFileName, nLength * sizeof(TCHAR));
+ szPatchItem += nLength;
+ }
+
+ // Terminate the multi-string
+ *szPatchItem++ = 0;
+ }
+
+ // The length must match
+ assert((size_t)(szPatchItem - szPatchChain) == cchCharsNeeded);
+ }
+
+ // Give the length of the patch chain, in bytes
+ if(pcbChainLength != NULL)
+ pcbChainLength[0] = (DWORD)(cchCharsNeeded * sizeof(TCHAR));
+ return szPatchChain;
+}
+
+// hf - MPQ File handle.
+// pbBuffer - Pointer to target buffer to store sectors.
+// dwByteOffset - Position of sector in the file (relative to file begin)
+// dwBytesToRead - Number of bytes to read. Must be multiplier of sector size.
+// pdwBytesRead - Stored number of bytes loaded
+static int ReadMpqSectors(TMPQFile * hf, LPBYTE pbBuffer, DWORD dwByteOffset, DWORD dwBytesToRead, LPDWORD pdwBytesRead)
+{
+ ULONGLONG RawFilePos;
+ TMPQArchive * ha = hf->ha;
+ TFileEntry * pFileEntry = hf->pFileEntry;
+ LPBYTE pbRawSector = NULL;
+ LPBYTE pbOutSector = pbBuffer;
+ LPBYTE pbInSector = pbBuffer;
+ DWORD dwRawBytesToRead;
+ DWORD dwRawSectorOffset = dwByteOffset;
+ DWORD dwSectorsToRead = dwBytesToRead / ha->dwSectorSize;
+ DWORD dwSectorIndex = dwByteOffset / ha->dwSectorSize;
+ DWORD dwSectorsDone = 0;
+ DWORD dwBytesRead = 0;
+ int nError = ERROR_SUCCESS;
+
+ // Note that dwByteOffset must be aligned to size of one sector
+ // Note that dwBytesToRead must be a multiplier of one sector size
+ // This is local function, so we won't check if that's true.
+ // Note that files stored in single units are processed by a separate function
+
+ // If there is not enough bytes remaining, cut dwBytesToRead
+ if((dwByteOffset + dwBytesToRead) > hf->dwDataSize)
+ dwBytesToRead = hf->dwDataSize - dwByteOffset;
+ dwRawBytesToRead = dwBytesToRead;
+
+ // Perform all necessary work to do with compressed files
+ if(pFileEntry->dwFlags & MPQ_FILE_COMPRESS_MASK)
+ {
+ // If the sector positions are not loaded yet, do it
+ if(hf->SectorOffsets == NULL)
+ {
+ nError = AllocateSectorOffsets(hf, true);
+ if(nError != ERROR_SUCCESS)
+ return nError;
+ }
+
+ // If the sector checksums are not loaded yet, load them now.
+ if(hf->SectorChksums == NULL && (pFileEntry->dwFlags & MPQ_FILE_SECTOR_CRC) && hf->bLoadedSectorCRCs == false)
+ {
+ //
+ // Sector CRCs is plain crap feature. It is almost never present,
+ // often it's empty, or the end offset of sector CRCs is zero.
+ // We only try to load sector CRCs once, and regardless if it fails
+ // or not, we won't try that again for the given file.
+ //
+
+ AllocateSectorChecksums(hf, true);
+ hf->bLoadedSectorCRCs = true;
+ }
+
+ // TODO: If the raw data MD5s are not loaded yet, load them now
+ // Only do it if the MPQ is of format 4.0
+// if(ha->pHeader->wFormatVersion >= MPQ_FORMAT_VERSION_4 && ha->pHeader->dwRawChunkSize != 0)
+// {
+// nError = AllocateRawMD5s(hf, true);
+// if(nError != ERROR_SUCCESS)
+// return nError;
+// }
+
+ // If the file is compressed, also allocate secondary buffer
+ pbInSector = pbRawSector = STORM_ALLOC(BYTE, dwBytesToRead);
+ if(pbRawSector == NULL)
+ return ERROR_NOT_ENOUGH_MEMORY;
+
+ // Assign the temporary buffer as target for read operation
+ dwRawSectorOffset = hf->SectorOffsets[dwSectorIndex];
+ dwRawBytesToRead = hf->SectorOffsets[dwSectorIndex + dwSectorsToRead] - dwRawSectorOffset;
+ }
+
+ // Calculate raw file offset where the sector(s) are stored.
+ CalculateRawSectorOffset(RawFilePos, hf, dwRawSectorOffset);
+
+ // Set file pointer and read all required sectors
+ if(!FileStream_Read(ha->pStream, &RawFilePos, pbInSector, dwRawBytesToRead))
+ return GetLastError();
+ dwBytesRead = 0;
+
+ // Now we have to decrypt and decompress all file sectors that have been loaded
+ for(DWORD i = 0; i < dwSectorsToRead; i++)
+ {
+ DWORD dwRawBytesInThisSector = ha->dwSectorSize;
+ DWORD dwBytesInThisSector = ha->dwSectorSize;
+ DWORD dwIndex = dwSectorIndex + i;
+
+ // If there is not enough bytes in the last sector,
+ // cut the number of bytes in this sector
+ if(dwRawBytesInThisSector > dwBytesToRead)
+ dwRawBytesInThisSector = dwBytesToRead;
+ if(dwBytesInThisSector > dwBytesToRead)
+ dwBytesInThisSector = dwBytesToRead;
+
+ // If the file is compressed, we have to adjust the raw sector size
+ if(pFileEntry->dwFlags & MPQ_FILE_COMPRESS_MASK)
+ dwRawBytesInThisSector = hf->SectorOffsets[dwIndex + 1] - hf->SectorOffsets[dwIndex];
+
+ // If the file is encrypted, we have to decrypt the sector
+ if(pFileEntry->dwFlags & MPQ_FILE_ENCRYPTED)
+ {
+ BSWAP_ARRAY32_UNSIGNED(pbInSector, dwRawBytesInThisSector);
+
+ // If we don't know the key, try to detect it by file content
+ if(hf->dwFileKey == 0)
+ {
+ hf->dwFileKey = DetectFileKeyByContent(pbInSector, dwBytesInThisSector);
+ if(hf->dwFileKey == 0)
+ {
+ nError = ERROR_UNKNOWN_FILE_KEY;
+ break;
+ }
+ }
+
+ DecryptMpqBlock(pbInSector, dwRawBytesInThisSector, hf->dwFileKey + dwIndex);
+ BSWAP_ARRAY32_UNSIGNED(pbInSector, dwRawBytesInThisSector);
+ }
+
+ // If the file has sector CRC check turned on, perform it
+ if(hf->bCheckSectorCRCs && hf->SectorChksums != NULL)
+ {
+ DWORD dwAdlerExpected = hf->SectorChksums[dwIndex];
+ DWORD dwAdlerValue = 0;
+
+ // We can only check sector CRC when it's not zero
+ // Neither can we check it if it's 0xFFFFFFFF.
+ if(dwAdlerExpected != 0 && dwAdlerExpected != 0xFFFFFFFF)
+ {
+ dwAdlerValue = adler32(0, pbInSector, dwRawBytesInThisSector);
+ if(dwAdlerValue != dwAdlerExpected)
+ {
+ nError = ERROR_CHECKSUM_ERROR;
+ break;
+ }
+ }
+ }
+
+ // If the sector is really compressed, decompress it.
+ // WARNING : Some sectors may not be compressed, it can be determined only
+ // by comparing uncompressed and compressed size !!!
+ if(dwRawBytesInThisSector < dwBytesInThisSector)
+ {
+ int cbOutSector = dwBytesInThisSector;
+ int cbInSector = dwRawBytesInThisSector;
+ int nResult = 0;
+
+ // Is the file compressed by Blizzard's multiple compression ?
+ if(pFileEntry->dwFlags & MPQ_FILE_COMPRESS)
+ {
+ if(ha->pHeader->wFormatVersion >= MPQ_FORMAT_VERSION_2)
+ nResult = SCompDecompress2(pbOutSector, &cbOutSector, pbInSector, cbInSector);
+ else
+ nResult = SCompDecompress(pbOutSector, &cbOutSector, pbInSector, cbInSector);
+ }
+
+ // Is the file compressed by PKWARE Data Compression Library ?
+ else if(pFileEntry->dwFlags & MPQ_FILE_IMPLODE)
+ {
+ nResult = SCompExplode(pbOutSector, &cbOutSector, pbInSector, cbInSector);
+ }
+
+ // Did the decompression fail ?
+ if(nResult == 0)
+ {
+ nError = ERROR_FILE_CORRUPT;
+ break;
+ }
+ }
+ else
+ {
+ if(pbOutSector != pbInSector)
+ memcpy(pbOutSector, pbInSector, dwBytesInThisSector);
+ }
+
+ // Move pointers
+ dwBytesToRead -= dwBytesInThisSector;
+ dwByteOffset += dwBytesInThisSector;
+ dwBytesRead += dwBytesInThisSector;
+ pbOutSector += dwBytesInThisSector;
+ pbInSector += dwRawBytesInThisSector;
+ dwSectorsDone++;
+ }
+
+ // Free all used buffers
+ if(pbRawSector != NULL)
+ STORM_FREE(pbRawSector);
+
+ // Give the caller thenumber of bytes read
+ *pdwBytesRead = dwBytesRead;
+ return nError;
+}
+
+static int ReadMpqFileSingleUnit(TMPQFile * hf, void * pvBuffer, DWORD dwFilePos, DWORD dwToRead, LPDWORD pdwBytesRead)
+{
+ ULONGLONG RawFilePos = hf->RawFilePos;
+ TMPQArchive * ha = hf->ha;
+ TFileEntry * pFileEntry = hf->pFileEntry;
+ LPBYTE pbCompressed = NULL;
+ LPBYTE pbRawData = NULL;
+ int nError = ERROR_SUCCESS;
+
+ // If the file buffer is not allocated yet, do it.
+ if(hf->pbFileSector == NULL)
+ {
+ nError = AllocateSectorBuffer(hf);
+ if(nError != ERROR_SUCCESS)
+ return nError;
+ pbRawData = hf->pbFileSector;
+ }
+
+ // If the file is a patch file, adjust raw data offset
+ if(hf->pPatchInfo != NULL)
+ RawFilePos += hf->pPatchInfo->dwLength;
+
+ // If the file sector is not loaded yet, do it
+ if(hf->dwSectorOffs != 0)
+ {
+ // Is the file compressed?
+ if(pFileEntry->dwFlags & MPQ_FILE_COMPRESS_MASK)
+ {
+ // Allocate space for compressed data
+ pbCompressed = STORM_ALLOC(BYTE, pFileEntry->dwCmpSize);
+ if(pbCompressed == NULL)
+ return ERROR_NOT_ENOUGH_MEMORY;
+ pbRawData = pbCompressed;
+ }
+
+ // Load the raw (compressed, encrypted) data
+ if(!FileStream_Read(ha->pStream, &RawFilePos, pbRawData, pFileEntry->dwCmpSize))
+ {
+ STORM_FREE(pbCompressed);
+ return GetLastError();
+ }
+
+ // If the file is encrypted, we have to decrypt the data first
+ if(pFileEntry->dwFlags & MPQ_FILE_ENCRYPTED)
+ {
+ BSWAP_ARRAY32_UNSIGNED(pbRawData, pFileEntry->dwCmpSize);
+ DecryptMpqBlock(pbRawData, pFileEntry->dwCmpSize, hf->dwFileKey);
+ BSWAP_ARRAY32_UNSIGNED(pbRawData, pFileEntry->dwCmpSize);
+ }
+
+ // If the file is compressed, we have to decompress it now
+ if(pFileEntry->dwFlags & MPQ_FILE_COMPRESS_MASK)
+ {
+ int cbOutBuffer = (int)hf->dwDataSize;
+ int cbInBuffer = (int)pFileEntry->dwCmpSize;
+ int nResult = 0;
+
+ //
+ // If the file is an incremental patch, the size of compressed data
+ // is determined as pFileEntry->dwCmpSize - sizeof(TPatchInfo)
+ //
+ // In "wow-update-12694.MPQ" from Wow-Cataclysm BETA:
+ //
+ // File CmprSize DcmpSize DataSize Compressed?
+ // -------------------------------------- ---------- -------- -------- ---------------
+ // esES\DBFilesClient\LightSkyBox.dbc 0xBE->0xA2 0xBC 0xBC Yes
+ // deDE\DBFilesClient\MountCapability.dbc 0x93->0x77 0x77 0x77 No
+ //
+
+ if(pFileEntry->dwFlags & MPQ_FILE_PATCH_FILE)
+ cbInBuffer = cbInBuffer - sizeof(TPatchInfo);
+
+ // Is the file compressed by Blizzard's multiple compression ?
+ if(pFileEntry->dwFlags & MPQ_FILE_COMPRESS)
+ {
+ if(ha->pHeader->wFormatVersion >= MPQ_FORMAT_VERSION_2)
+ nResult = SCompDecompress2(hf->pbFileSector, &cbOutBuffer, pbRawData, cbInBuffer);
+ else
+ nResult = SCompDecompress(hf->pbFileSector, &cbOutBuffer, pbRawData, cbInBuffer);
+ }
+
+ // Is the file compressed by PKWARE Data Compression Library ?
+ // Note: Single unit files compressed with IMPLODE are not supported by Blizzard
+ else if(pFileEntry->dwFlags & MPQ_FILE_IMPLODE)
+ nResult = SCompExplode(hf->pbFileSector, &cbOutBuffer, pbRawData, cbInBuffer);
+
+ nError = (nResult != 0) ? ERROR_SUCCESS : ERROR_FILE_CORRUPT;
+ }
+ else
+ {
+ if(pbRawData != hf->pbFileSector)
+ memcpy(hf->pbFileSector, pbRawData, hf->dwDataSize);
+ }
+
+ // Free the decompression buffer.
+ if(pbCompressed != NULL)
+ STORM_FREE(pbCompressed);
+
+ // The file sector is now properly loaded
+ hf->dwSectorOffs = 0;
+ }
+
+ // At this moment, we have the file loaded into the file buffer.
+ // Copy as much as the caller wants
+ if(nError == ERROR_SUCCESS && hf->dwSectorOffs == 0)
+ {
+ // File position is greater or equal to file size ?
+ if(dwFilePos >= hf->dwDataSize)
+ {
+ *pdwBytesRead = 0;
+ return ERROR_SUCCESS;
+ }
+
+ // If not enough bytes remaining in the file, cut them
+ if((hf->dwDataSize - dwFilePos) < dwToRead)
+ dwToRead = (hf->dwDataSize - dwFilePos);
+
+ // Copy the bytes
+ memcpy(pvBuffer, hf->pbFileSector + dwFilePos, dwToRead);
+
+ // Give the number of bytes read
+ *pdwBytesRead = dwToRead;
+ return ERROR_SUCCESS;
+ }
+
+ // An error, sorry
+ return ERROR_CAN_NOT_COMPLETE;
+}
+
+static int ReadMpkFileSingleUnit(TMPQFile * hf, void * pvBuffer, DWORD dwFilePos, DWORD dwToRead, LPDWORD pdwBytesRead)
+{
+ ULONGLONG RawFilePos = hf->RawFilePos + 0x0C; // For some reason, MPK files start at position (hf->RawFilePos + 0x0C)
+ TMPQArchive * ha = hf->ha;
+ TFileEntry * pFileEntry = hf->pFileEntry;
+ LPBYTE pbCompressed = NULL;
+ LPBYTE pbRawData = hf->pbFileSector;
+ int nError = ERROR_SUCCESS;
+
+ // We do not support patch files in MPK archives
+ assert(hf->pPatchInfo == NULL);
+
+ // If the file buffer is not allocated yet, do it.
+ if(hf->pbFileSector == NULL)
+ {
+ nError = AllocateSectorBuffer(hf);
+ if(nError != ERROR_SUCCESS)
+ return nError;
+
+ // Is the file compressed?
+ if(pFileEntry->dwFlags & MPQ_FILE_COMPRESS_MASK)
+ {
+ // Allocate space for compressed data
+ pbCompressed = STORM_ALLOC(BYTE, pFileEntry->dwCmpSize);
+ if(pbCompressed == NULL)
+ return ERROR_NOT_ENOUGH_MEMORY;
+ pbRawData = pbCompressed;
+ }
+
+ // Load the raw (compressed, encrypted) data
+ if(!FileStream_Read(ha->pStream, &RawFilePos, pbRawData, pFileEntry->dwCmpSize))
+ {
+ STORM_FREE(pbCompressed);
+ return GetLastError();
+ }
+
+ // If the file is encrypted, we have to decrypt the data first
+ if(pFileEntry->dwFlags & MPQ_FILE_ENCRYPTED)
+ {
+ DecryptMpkTable(pbRawData, pFileEntry->dwCmpSize);
+ }
+
+ // If the file is compressed, we have to decompress it now
+ if(pFileEntry->dwFlags & MPQ_FILE_COMPRESS_MASK)
+ {
+ int cbOutBuffer = (int)hf->dwDataSize;
+
+ if(!SCompDecompressMpk(hf->pbFileSector, &cbOutBuffer, pbRawData, (int)pFileEntry->dwCmpSize))
+ nError = ERROR_FILE_CORRUPT;
+ }
+ else
+ {
+ if(pbRawData != hf->pbFileSector)
+ memcpy(hf->pbFileSector, pbRawData, hf->dwDataSize);
+ }
+
+ // Free the decompression buffer.
+ if(pbCompressed != NULL)
+ STORM_FREE(pbCompressed);
+
+ // The file sector is now properly loaded
+ hf->dwSectorOffs = 0;
+ }
+
+ // At this moment, we have the file loaded into the file buffer.
+ // Copy as much as the caller wants
+ if(nError == ERROR_SUCCESS && hf->dwSectorOffs == 0)
+ {
+ // File position is greater or equal to file size ?
+ if(dwFilePos >= hf->dwDataSize)
+ {
+ *pdwBytesRead = 0;
+ return ERROR_SUCCESS;
+ }
+
+ // If not enough bytes remaining in the file, cut them
+ if((hf->dwDataSize - dwFilePos) < dwToRead)
+ dwToRead = (hf->dwDataSize - dwFilePos);
+
+ // Copy the bytes
+ memcpy(pvBuffer, hf->pbFileSector + dwFilePos, dwToRead);
+
+ // Give the number of bytes read
+ *pdwBytesRead = dwToRead;
+ return ERROR_SUCCESS;
+ }
+
+ // An error, sorry
+ return ERROR_CAN_NOT_COMPLETE;
+}
+
+
+static int ReadMpqFileSectorFile(TMPQFile * hf, void * pvBuffer, DWORD dwFilePos, DWORD dwBytesToRead, LPDWORD pdwBytesRead)
+{
+ TMPQArchive * ha = hf->ha;
+ LPBYTE pbBuffer = (BYTE *)pvBuffer;
+ DWORD dwTotalBytesRead = 0; // Total bytes read in all three parts
+ DWORD dwSectorSizeMask = ha->dwSectorSize - 1; // Mask for block size, usually 0x0FFF
+ DWORD dwFileSectorPos; // File offset of the loaded sector
+ DWORD dwBytesRead; // Number of bytes read (temporary variable)
+ int nError;
+
+ // If the file position is at or beyond end of file, do nothing
+ if(dwFilePos >= hf->dwDataSize)
+ {
+ *pdwBytesRead = 0;
+ return ERROR_SUCCESS;
+ }
+
+ // If not enough bytes in the file remaining, cut them
+ if(dwBytesToRead > (hf->dwDataSize - dwFilePos))
+ dwBytesToRead = (hf->dwDataSize - dwFilePos);
+
+ // Compute sector position in the file
+ dwFileSectorPos = dwFilePos & ~dwSectorSizeMask; // Position in the block
+
+ // If the file sector buffer is not allocated yet, do it now
+ if(hf->pbFileSector == NULL)
+ {
+ nError = AllocateSectorBuffer(hf);
+ if(nError != ERROR_SUCCESS)
+ return nError;
+ }
+
+ // Load the first (incomplete) file sector
+ if(dwFilePos & dwSectorSizeMask)
+ {
+ DWORD dwBytesInSector = ha->dwSectorSize;
+ DWORD dwBufferOffs = dwFilePos & dwSectorSizeMask;
+ DWORD dwToCopy;
+
+ // Is the file sector already loaded ?
+ if(hf->dwSectorOffs != dwFileSectorPos)
+ {
+ // Load one MPQ sector into archive buffer
+ nError = ReadMpqSectors(hf, hf->pbFileSector, dwFileSectorPos, ha->dwSectorSize, &dwBytesInSector);
+ if(nError != ERROR_SUCCESS)
+ return nError;
+
+ // Remember that the data loaded to the sector have new file offset
+ hf->dwSectorOffs = dwFileSectorPos;
+ }
+ else
+ {
+ if((dwFileSectorPos + dwBytesInSector) > hf->dwDataSize)
+ dwBytesInSector = hf->dwDataSize - dwFileSectorPos;
+ }
+
+ // Copy the data from the offset in the loaded sector to the end of the sector
+ dwToCopy = dwBytesInSector - dwBufferOffs;
+ if(dwToCopy > dwBytesToRead)
+ dwToCopy = dwBytesToRead;
+
+ // Copy data from sector buffer into target buffer
+ memcpy(pbBuffer, hf->pbFileSector + dwBufferOffs, dwToCopy);
+
+ // Update pointers and byte counts
+ dwTotalBytesRead += dwToCopy;
+ dwFileSectorPos += dwBytesInSector;
+ pbBuffer += dwToCopy;
+ dwBytesToRead -= dwToCopy;
+ }
+
+ // Load the whole ("middle") sectors only if there is at least one full sector to be read
+ if(dwBytesToRead >= ha->dwSectorSize)
+ {
+ DWORD dwBlockBytes = dwBytesToRead & ~dwSectorSizeMask;
+
+ // Load all sectors to the output buffer
+ nError = ReadMpqSectors(hf, pbBuffer, dwFileSectorPos, dwBlockBytes, &dwBytesRead);
+ if(nError != ERROR_SUCCESS)
+ return nError;
+
+ // Update pointers
+ dwTotalBytesRead += dwBytesRead;
+ dwFileSectorPos += dwBytesRead;
+ pbBuffer += dwBytesRead;
+ dwBytesToRead -= dwBytesRead;
+ }
+
+ // Read the terminating sector
+ if(dwBytesToRead > 0)
+ {
+ DWORD dwToCopy = ha->dwSectorSize;
+
+ // Is the file sector already loaded ?
+ if(hf->dwSectorOffs != dwFileSectorPos)
+ {
+ // Load one MPQ sector into archive buffer
+ nError = ReadMpqSectors(hf, hf->pbFileSector, dwFileSectorPos, ha->dwSectorSize, &dwBytesRead);
+ if(nError != ERROR_SUCCESS)
+ return nError;
+
+ // Remember that the data loaded to the sector have new file offset
+ hf->dwSectorOffs = dwFileSectorPos;
+ }
+
+ // Check number of bytes read
+ if(dwToCopy > dwBytesToRead)
+ dwToCopy = dwBytesToRead;
+
+ // Copy the data from the cached last sector to the caller's buffer
+ memcpy(pbBuffer, hf->pbFileSector, dwToCopy);
+
+ // Update pointers
+ dwTotalBytesRead += dwToCopy;
+ }
+
+ // Store total number of bytes read to the caller
+ *pdwBytesRead = dwTotalBytesRead;
+ return ERROR_SUCCESS;
+}
+
+static int ReadMpqFilePatchFile(TMPQFile * hf, void * pvBuffer, DWORD dwFilePos, DWORD dwToRead, LPDWORD pdwBytesRead)
+{
+ DWORD dwBytesToRead = dwToRead;
+ DWORD dwBytesRead = 0;
+ int nError = ERROR_SUCCESS;
+
+ // Make sure that the patch file is loaded completely
+ if(hf->pbFileData == NULL)
+ {
+ // Load the original file and store its content to "pbOldData"
+ hf->pbFileData = STORM_ALLOC(BYTE, hf->pFileEntry->dwFileSize);
+ hf->cbFileData = hf->pFileEntry->dwFileSize;
+ if(hf->pbFileData == NULL)
+ return ERROR_NOT_ENOUGH_MEMORY;
+
+ // Read the file data
+ if(hf->pFileEntry->dwFlags & MPQ_FILE_SINGLE_UNIT)
+ nError = ReadMpqFileSingleUnit(hf, hf->pbFileData, 0, hf->cbFileData, &dwBytesRead);
+ else
+ nError = ReadMpqFileSectorFile(hf, hf->pbFileData, 0, hf->cbFileData, &dwBytesRead);
+
+ // Fix error code
+ if(nError == ERROR_SUCCESS && dwBytesRead != hf->cbFileData)
+ nError = ERROR_FILE_CORRUPT;
+
+ // Patch the file data
+ if(nError == ERROR_SUCCESS)
+ nError = PatchFileData(hf);
+
+ // Reset number of bytes read to zero
+ dwBytesRead = 0;
+ }
+
+ // If there is something to read, do it
+ if(nError == ERROR_SUCCESS)
+ {
+ if(dwFilePos < hf->cbFileData)
+ {
+ // Make sure we don't copy more than file size
+ if((dwFilePos + dwToRead) > hf->cbFileData)
+ dwToRead = hf->cbFileData - dwFilePos;
+
+ // Copy the appropriate amount of the file data to the caller's buffer
+ memcpy(pvBuffer, hf->pbFileData + dwFilePos, dwToRead);
+ dwBytesRead = dwToRead;
+ }
+
+ // Set the proper error code
+ nError = (dwBytesRead == dwBytesToRead) ? ERROR_SUCCESS : ERROR_HANDLE_EOF;
+ }
+
+ // Give the result to the caller
+ if(pdwBytesRead != NULL)
+ *pdwBytesRead = dwBytesRead;
+ return nError;
+}
+
+static int ReadMpqFileLocalFile(TMPQFile * hf, void * pvBuffer, DWORD dwFilePos, DWORD dwToRead, LPDWORD pdwBytesRead)
+{
+ ULONGLONG FilePosition1 = dwFilePos;
+ ULONGLONG FilePosition2;
+ DWORD dwBytesRead = 0;
+ int nError = ERROR_SUCCESS;
+
+ assert(hf->pStream != NULL);
+
+ // Because stream I/O functions are designed to read
+ // "all or nothing", we compare file position before and after,
+ // and if they differ, we assume that number of bytes read
+ // is the difference between them
+
+ if(!FileStream_Read(hf->pStream, &FilePosition1, pvBuffer, dwToRead))
+ {
+ // If not all bytes have been read, then return the number of bytes read
+ if((nError = GetLastError()) == ERROR_HANDLE_EOF)
+ {
+ FileStream_GetPos(hf->pStream, &FilePosition2);
+ dwBytesRead = (DWORD)(FilePosition2 - FilePosition1);
+ }
+ }
+ else
+ {
+ dwBytesRead = dwToRead;
+ }
+
+ *pdwBytesRead = dwBytesRead;
+ return nError;
+}
+
+//-----------------------------------------------------------------------------
+// SFileReadFile
+
+bool WINAPI SFileReadFile(HANDLE hFile, void * pvBuffer, DWORD dwToRead, LPDWORD pdwRead, LPOVERLAPPED lpOverlapped)
+{
+ TMPQFile * hf = (TMPQFile *)hFile;
+ DWORD dwBytesRead = 0; // Number of bytes read
+ int nError = ERROR_SUCCESS;
+
+ // Keep compilers happy
+ lpOverlapped = lpOverlapped;
+
+ // Check valid parameters
+ if(!IsValidFileHandle(hFile))
+ {
+ SetLastError(ERROR_INVALID_HANDLE);
+ return false;
+ }
+
+ if(pvBuffer == NULL)
+ {
+ SetLastError(ERROR_INVALID_PARAMETER);
+ return false;
+ }
+
+ // If the file is local file, read the data directly from the stream
+ if(hf->pStream != NULL)
+ {
+ nError = ReadMpqFileLocalFile(hf, pvBuffer, hf->dwFilePos, dwToRead, &dwBytesRead);
+ }
+
+ // If the file is a patch file, we have to read it special way
+ else if(hf->hfPatchFile != NULL && (hf->pFileEntry->dwFlags & MPQ_FILE_PATCH_FILE) == 0)
+ {
+ nError = ReadMpqFilePatchFile(hf, pvBuffer, hf->dwFilePos, dwToRead, &dwBytesRead);
+ }
+
+ // If the archive is a MPK archive, we need special way to read the file
+ else if(hf->ha->dwSubType == MPQ_SUBTYPE_MPK)
+ {
+ nError = ReadMpkFileSingleUnit(hf, pvBuffer, hf->dwFilePos, dwToRead, &dwBytesRead);
+ }
+
+ // If the file is single unit file, redirect it to read file
+ else if(hf->pFileEntry->dwFlags & MPQ_FILE_SINGLE_UNIT)
+ {
+ nError = ReadMpqFileSingleUnit(hf, pvBuffer, hf->dwFilePos, dwToRead, &dwBytesRead);
+ }
+
+ // Otherwise read it as sector based MPQ file
+ else
+ {
+ nError = ReadMpqFileSectorFile(hf, pvBuffer, hf->dwFilePos, dwToRead, &dwBytesRead);
+ }
+
+ // Increment the file position
+ hf->dwFilePos += dwBytesRead;
+
+ // Give the caller the number of bytes read
+ if(pdwRead != NULL)
+ *pdwRead = dwBytesRead;
+
+ // If the read operation succeeded, but not full number of bytes was read,
+ // set the last error to ERROR_HANDLE_EOF
+ if(nError == ERROR_SUCCESS && (dwBytesRead < dwToRead))
+ nError = ERROR_HANDLE_EOF;
+
+ // If something failed, set the last error value
+ if(nError != ERROR_SUCCESS)
+ SetLastError(nError);
+ return (nError == ERROR_SUCCESS);
+}
+
+//-----------------------------------------------------------------------------
+// SFileGetFileSize
+
+DWORD WINAPI SFileGetFileSize(HANDLE hFile, LPDWORD pdwFileSizeHigh)
+{
+ ULONGLONG FileSize;
+ TMPQFile * hf = (TMPQFile *)hFile;
+
+ // Validate the file handle before we go on
+ if(IsValidFileHandle(hFile))
+ {
+ // Make sure that the variable is initialized
+ FileSize = 0;
+
+ // If the file is patched file, we have to get the size of the last version
+ if(hf->hfPatchFile != NULL)
+ {
+ // Walk through the entire patch chain, take the last version
+ while(hf != NULL)
+ {
+ // Get the size of the currently pointed version
+ FileSize = hf->pFileEntry->dwFileSize;
+
+ // Move to the next patch file in the hierarchy
+ hf = hf->hfPatchFile;
+ }
+ }
+ else
+ {
+ // Is it a local file ?
+ if(hf->pStream != NULL)
+ {
+ FileStream_GetSize(hf->pStream, &FileSize);
+ }
+ else
+ {
+ FileSize = hf->dwDataSize;
+ }
+ }
+
+ // If opened from archive, return file size
+ if(pdwFileSizeHigh != NULL)
+ *pdwFileSizeHigh = (DWORD)(FileSize >> 32);
+ return (DWORD)FileSize;
+ }
+
+ SetLastError(ERROR_INVALID_HANDLE);
+ return SFILE_INVALID_SIZE;
+}
+
+DWORD WINAPI SFileSetFilePointer(HANDLE hFile, LONG lFilePos, LONG * plFilePosHigh, DWORD dwMoveMethod)
+{
+ TMPQFile * hf = (TMPQFile *)hFile;
+ ULONGLONG FilePosition;
+ ULONGLONG MoveOffset;
+ DWORD dwFilePosHi;
+
+ // If the hFile is not a valid file handle, return an error.
+ if(!IsValidFileHandle(hFile))
+ {
+ SetLastError(ERROR_INVALID_HANDLE);
+ return SFILE_INVALID_POS;
+ }
+
+ // Get the relative point where to move from
+ switch(dwMoveMethod)
+ {
+ case FILE_BEGIN:
+ FilePosition = 0;
+ break;
+
+ case FILE_CURRENT:
+ if(hf->pStream != NULL)
+ {
+ FileStream_GetPos(hf->pStream, &FilePosition);
+ }
+ else
+ {
+ FilePosition = hf->dwFilePos;
+ }
+ break;
+
+ case FILE_END:
+ if(hf->pStream != NULL)
+ {
+ FileStream_GetSize(hf->pStream, &FilePosition);
+ }
+ else
+ {
+ FilePosition = SFileGetFileSize(hFile, NULL);
+ }
+ break;
+
+ default:
+ SetLastError(ERROR_INVALID_PARAMETER);
+ return SFILE_INVALID_POS;
+ }
+
+ // Now get the move offset. Note that both values form
+ // a signed 64-bit value (a file pointer can be moved backwards)
+ if(plFilePosHigh != NULL)
+ dwFilePosHi = *plFilePosHigh;
+ else
+ dwFilePosHi = (lFilePos & 0x80000000) ? 0xFFFFFFFF : 0;
+ MoveOffset = MAKE_OFFSET64(dwFilePosHi, lFilePos);
+
+ // Now calculate the new file pointer
+ // Do not allow the file pointer to go before the begin of the file
+ FilePosition += MoveOffset;
+ if(FilePosition < 0)
+ FilePosition = 0;
+
+ // Now apply the file pointer to the file
+ if(hf->pStream != NULL)
+ {
+ // Apply the new file position
+ if(!FileStream_Read(hf->pStream, &FilePosition, NULL, 0))
+ return SFILE_INVALID_POS;
+
+ // Return the new file position
+ if(plFilePosHigh != NULL)
+ *plFilePosHigh = (LONG)(FilePosition >> 32);
+ return (DWORD)FilePosition;
+ }
+ else
+ {
+ // Files in MPQ can't be bigger than 4 GB.
+ // We don't allow to go past 4 GB
+ if(FilePosition >> 32)
+ {
+ SetLastError(ERROR_INVALID_PARAMETER);
+ return SFILE_INVALID_POS;
+ }
+
+ // Change the file position
+ hf->dwFilePos = (DWORD)FilePosition;
+
+ // Return the new file position
+ if(plFilePosHigh != NULL)
+ *plFilePosHigh = 0;
+ return (DWORD)FilePosition;
+ }
+}
+
+//-----------------------------------------------------------------------------
+// Tries to retrieve the file name
+
+struct TFileHeader2Ext
+{
+ DWORD dwOffset00Data; // Required data at offset 00 (32-bits)
+ DWORD dwOffset00Mask; // Mask for data at offset 00 (32 bits). 0 = data are ignored
+ DWORD dwOffset04Data; // Required data at offset 04 (32-bits)
+ DWORD dwOffset04Mask; // Mask for data at offset 04 (32 bits). 0 = data are ignored
+ const char * szExt; // Supplied extension, if the condition is true
+};
+
+static TFileHeader2Ext data2ext[] =
+{
+ {0x00005A4D, 0x0000FFFF, 0x00000000, 0x00000000, "exe"}, // EXE files
+ {0x00000006, 0xFFFFFFFF, 0x00000001, 0xFFFFFFFF, "dc6"}, // EXE files
+ {0x1A51504D, 0xFFFFFFFF, 0x00000000, 0x00000000, "mpq"}, // MPQ archive header ID ('MPQ\x1A')
+ {0x46464952, 0xFFFFFFFF, 0x00000000, 0x00000000, "wav"}, // WAVE header 'RIFF'
+ {0x324B4D53, 0xFFFFFFFF, 0x00000000, 0x00000000, "smk"}, // Old "Smacker Video" files 'SMK2'
+ {0x694B4942, 0xFFFFFFFF, 0x00000000, 0x00000000, "bik"}, // Bink video files (new)
+ {0x0801050A, 0xFFFFFFFF, 0x00000000, 0x00000000, "pcx"}, // PCX images used in Diablo I
+ {0x544E4F46, 0xFFFFFFFF, 0x00000000, 0x00000000, "fnt"}, // Font files used in Diablo II
+ {0x6D74683C, 0xFFFFFFFF, 0x00000000, 0x00000000, "html"}, // HTML '<htm'
+ {0x4D54483C, 0xFFFFFFFF, 0x00000000, 0x00000000, "html"}, // HTML '<HTM
+ {0x216F6F57, 0xFFFFFFFF, 0x00000000, 0x00000000, "tbl"}, // Table files
+ {0x31504C42, 0xFFFFFFFF, 0x00000000, 0x00000000, "blp"}, // BLP textures
+ {0x32504C42, 0xFFFFFFFF, 0x00000000, 0x00000000, "blp"}, // BLP textures (v2)
+ {0x584C444D, 0xFFFFFFFF, 0x00000000, 0x00000000, "mdx"}, // MDX files
+ {0x45505954, 0xFFFFFFFF, 0x00000000, 0x00000000, "pud"}, // Warcraft II maps
+ {0x38464947, 0xFFFFFFFF, 0x00000000, 0x00000000, "gif"}, // GIF images 'GIF8'
+ {0x3032444D, 0xFFFFFFFF, 0x00000000, 0x00000000, "m2"}, // WoW ??? .m2
+ {0x43424457, 0xFFFFFFFF, 0x00000000, 0x00000000, "dbc"}, // ??? .dbc
+ {0x47585053, 0xFFFFFFFF, 0x00000000, 0x00000000, "bls"}, // WoW pixel shaders
+ {0xE0FFD8FF, 0xFFFFFFFF, 0x00000000, 0x00000000, "jpg"}, // JPEG image
+ {0x00000000, 0x00000000, 0x00000000, 0x00000000, "xxx"}, // Default extension
+ {0, 0, 0, 0, NULL} // Terminator
+};
+
+static int CreatePseudoFileName(HANDLE hFile, TFileEntry * pFileEntry, char * szFileName)
+{
+ TMPQFile * hf = (TMPQFile *)hFile; // MPQ File handle
+ DWORD FirstBytes[2] = {0, 0}; // The first 4 bytes of the file
+ DWORD dwBytesRead = 0;
+ DWORD dwFilePos; // Saved file position
+
+ // Read the first 2 DWORDs bytes from the file
+ dwFilePos = SFileSetFilePointer(hFile, 0, NULL, FILE_CURRENT);
+ SFileReadFile(hFile, FirstBytes, sizeof(FirstBytes), &dwBytesRead, NULL);
+ SFileSetFilePointer(hFile, dwFilePos, NULL, FILE_BEGIN);
+
+ // If we read at least 8 bytes
+ if(dwBytesRead == sizeof(FirstBytes))
+ {
+ // Make sure that the array is properly BSWAP-ed
+ BSWAP_ARRAY32_UNSIGNED(FirstBytes, sizeof(FirstBytes));
+
+ // Try to guess file extension from those 2 DWORDs
+ for(size_t i = 0; data2ext[i].szExt != NULL; i++)
+ {
+ if((FirstBytes[0] & data2ext[i].dwOffset00Mask) == data2ext[i].dwOffset00Data &&
+ (FirstBytes[1] & data2ext[i].dwOffset04Mask) == data2ext[i].dwOffset04Data)
+ {
+ char szPseudoName[20] = "";
+
+ // Format the pseudo-name
+ sprintf(szPseudoName, "File%08u.%s", (unsigned int)(pFileEntry - hf->ha->pFileTable), data2ext[i].szExt);
+
+ // Save the pseudo-name in the file entry as well
+ AllocateFileName(hf->ha, pFileEntry, szPseudoName);
+
+ // If the caller wants to copy the file name, do it
+ if(szFileName != NULL)
+ strcpy(szFileName, szPseudoName);
+ return ERROR_SUCCESS;
+ }
+ }
+ }
+
+ return ERROR_NOT_SUPPORTED;
+}
+
+bool WINAPI SFileGetFileName(HANDLE hFile, char * szFileName)
+{
+ TMPQFile * hf = (TMPQFile *)hFile; // MPQ File handle
+ TCHAR * szFileNameT;
+ int nError = ERROR_INVALID_HANDLE;
+
+ // Pre-zero the output buffer
+ if(szFileName != NULL)
+ *szFileName = 0;
+
+ // Check valid parameters
+ if(IsValidFileHandle(hFile))
+ {
+ TFileEntry * pFileEntry = hf->pFileEntry;
+
+ // For MPQ files, retrieve the file name from the file entry
+ if(hf->pStream == NULL)
+ {
+ if(pFileEntry != NULL)
+ {
+ // If the file name is not there yet, create a pseudo name
+ if(pFileEntry->szFileName == NULL)
+ {
+ nError = CreatePseudoFileName(hFile, pFileEntry, szFileName);
+ }
+ else
+ {
+ if(szFileName != NULL)
+ strcpy(szFileName, pFileEntry->szFileName);
+ nError = ERROR_SUCCESS;
+ }
+ }
+ }
+
+ // For local files, copy the file name from the stream
+ else
+ {
+ if(szFileName != NULL)
+ {
+ szFileNameT = FileStream_GetFileName(hf->pStream);
+ CopyFileName(szFileName, szFileNameT, _tcslen(szFileNameT));
+ }
+ nError = ERROR_SUCCESS;
+ }
+ }
+
+ if(nError != ERROR_SUCCESS)
+ SetLastError(nError);
+ return (nError == ERROR_SUCCESS);
+}
+
+//-----------------------------------------------------------------------------
+// Retrieves an information about an archive or about a file within the archive
+//
+// hMpqOrFile - Handle to an MPQ archive or to a file
+// dwInfoType - Information to obtain
+
+bool WINAPI SFileGetFileInfo(
+ HANDLE hMpqOrFile,
+ DWORD dwInfoType,
+ void * pvFileInfo,
+ DWORD cbFileInfo,
+ LPDWORD pcbLengthNeeded)
+{
+ TMPQArchive * ha = NULL;
+ TMPQBlock * pBlockTable = NULL;
+ ULONGLONG Int64Value = 0;
+ TMPQFile * hf = NULL;
+ TCHAR * szPatchChain = NULL;
+ void * pvSrcFileInfo = NULL;
+ DWORD cbSrcFileInfo = 0;
+ DWORD dwInt32Value = 0;
+ int nError = ERROR_INVALID_PARAMETER;
+
+ switch(dwInfoType)
+ {
+ case SFILE_INFO_ARCHIVE_NAME:
+ ha = IsValidMpqHandle(hMpqOrFile);
+ if(ha != NULL)
+ {
+ pvSrcFileInfo = FileStream_GetFileName(ha->pStream);
+ cbSrcFileInfo = (DWORD)(_tcslen((TCHAR *)pvSrcFileInfo) + 1) * sizeof(TCHAR);
+ }
+ break;
+
+ case SFILE_INFO_ARCHIVE_SIZE: // Size of the archive
+ ha = IsValidMpqHandle(hMpqOrFile);
+ if(ha != NULL)
+ {
+ pvSrcFileInfo = &ha->pHeader->dwArchiveSize;
+ cbSrcFileInfo = sizeof(DWORD);
+ }
+ break;
+
+ case SFILE_INFO_MAX_FILE_COUNT: // Max. number of files in the MPQ
+ ha = IsValidMpqHandle(hMpqOrFile);
+ if(ha != NULL)
+ {
+ pvSrcFileInfo = &ha->dwMaxFileCount;
+ cbSrcFileInfo = sizeof(DWORD);
+ }
+ break;
+
+ case SFILE_INFO_HASH_TABLE_SIZE: // Size of the hash table
+ ha = IsValidMpqHandle(hMpqOrFile);
+ if(ha != NULL)
+ {
+ pvSrcFileInfo = &ha->pHeader->dwHashTableSize;
+ cbSrcFileInfo = sizeof(DWORD);
+ }
+ break;
+
+ case SFILE_INFO_BLOCK_TABLE_SIZE: // Size of the block table
+ ha = IsValidMpqHandle(hMpqOrFile);
+ if(ha != NULL)
+ {
+ pvSrcFileInfo = &ha->pHeader->dwBlockTableSize;
+ cbSrcFileInfo = sizeof(DWORD);
+ }
+ break;
+
+ case SFILE_INFO_SECTOR_SIZE:
+ ha = IsValidMpqHandle(hMpqOrFile);
+ if(ha != NULL)
+ {
+ pvSrcFileInfo = &ha->dwSectorSize;
+ cbSrcFileInfo = sizeof(DWORD);
+ }
+ break;
+
+ case SFILE_INFO_HASH_TABLE:
+ ha = IsValidMpqHandle(hMpqOrFile);
+ if(ha != NULL)
+ {
+ pvSrcFileInfo = ha->pHashTable;
+ cbSrcFileInfo = ha->pHeader->dwHashTableSize * sizeof(TMPQHash);
+ }
+ break;
+
+ case SFILE_INFO_BLOCK_TABLE:
+ ha = IsValidMpqHandle(hMpqOrFile);
+ if(ha != NULL)
+ {
+ pvSrcFileInfo = pBlockTable = TranslateBlockTable(ha, &Int64Value, NULL);
+ cbSrcFileInfo = (DWORD)(Int64Value / sizeof(TMPQBlock));
+ }
+ break;
+
+ case SFILE_INFO_NUM_FILES:
+ ha = IsValidMpqHandle(hMpqOrFile);
+ if(ha != NULL)
+ {
+ pvSrcFileInfo = &dwInt32Value;
+ cbSrcFileInfo = sizeof(DWORD);
+ dwInt32Value = GetMpqFileCount(ha);
+ }
+ break;
+
+ case SFILE_INFO_STREAM_FLAGS:
+ ha = IsValidMpqHandle(hMpqOrFile);
+ if(ha != NULL)
+ {
+ FileStream_GetFlags(ha->pStream, &dwInt32Value);
+ pvSrcFileInfo = &dwInt32Value;
+ cbSrcFileInfo = sizeof(DWORD);
+ }
+ break;
+
+ case SFILE_INFO_IS_READ_ONLY:
+ ha = IsValidMpqHandle(hMpqOrFile);
+ if(ha != NULL)
+ {
+ pvSrcFileInfo = &dwInt32Value;
+ cbSrcFileInfo = sizeof(DWORD);
+ dwInt32Value = (FileStream_IsReadOnly(ha->pStream) || (ha->dwFlags & MPQ_FLAG_READ_ONLY));
+ }
+ break;
+
+ case SFILE_INFO_HASH_INDEX:
+ hf = IsValidFileHandle(hMpqOrFile);
+ if(hf != NULL)
+ {
+ pvSrcFileInfo = &hf->pFileEntry->dwHashIndex;
+ cbSrcFileInfo = sizeof(DWORD);
+ }
+ break;
+
+ case SFILE_INFO_CODENAME1:
+ hf = IsValidFileHandle(hMpqOrFile);
+ if(hf != NULL && hf->ha != NULL && hf->ha->pHashTable != NULL)
+ {
+ pvSrcFileInfo = &ha->pHashTable[hf->pFileEntry->dwHashIndex].dwName1;
+ cbSrcFileInfo = sizeof(DWORD);
+ }
+ break;
+
+ case SFILE_INFO_CODENAME2:
+ hf = IsValidFileHandle(hMpqOrFile);
+ if(hf != NULL && hf->ha != NULL && hf->ha->pHashTable != NULL)
+ {
+ pvSrcFileInfo = &ha->pHashTable[hf->pFileEntry->dwHashIndex].dwName2;
+ cbSrcFileInfo = sizeof(DWORD);
+ }
+ break;
+
+ case SFILE_INFO_LOCALEID:
+ hf = IsValidFileHandle(hMpqOrFile);
+ if(hf != NULL)
+ {
+ pvSrcFileInfo = &dwInt32Value;
+ cbSrcFileInfo = sizeof(DWORD);
+ dwInt32Value = hf->pFileEntry->lcLocale;
+ }
+ break;
+
+ case SFILE_INFO_BLOCKINDEX:
+ hf = IsValidFileHandle(hMpqOrFile);
+ if(hf != NULL && hf->ha != NULL)
+ {
+ pvSrcFileInfo = &dwInt32Value;
+ cbSrcFileInfo = sizeof(DWORD);
+ dwInt32Value = (DWORD)(hf->pFileEntry - hf->ha->pFileTable);
+ }
+ break;
+
+ case SFILE_INFO_FILE_SIZE:
+ hf = IsValidFileHandle(hMpqOrFile);
+ if(hf != NULL)
+ {
+ pvSrcFileInfo = &hf->pFileEntry->dwFileSize;
+ cbSrcFileInfo = sizeof(DWORD);
+ }
+ break;
+
+ case SFILE_INFO_COMPRESSED_SIZE:
+ hf = IsValidFileHandle(hMpqOrFile);
+ if(hf != NULL)
+ {
+ pvSrcFileInfo = &hf->pFileEntry->dwCmpSize;
+ cbSrcFileInfo = sizeof(DWORD);
+ }
+ break;
+
+ case SFILE_INFO_FLAGS:
+ hf = IsValidFileHandle(hMpqOrFile);
+ if(hf != NULL)
+ {
+ pvSrcFileInfo = &hf->pFileEntry->dwFlags;
+ cbSrcFileInfo = sizeof(DWORD);
+ }
+ break;
+
+ case SFILE_INFO_POSITION:
+ hf = IsValidFileHandle(hMpqOrFile);
+ if(hf != NULL)
+ {
+ pvSrcFileInfo = &hf->pFileEntry->ByteOffset;
+ cbSrcFileInfo = sizeof(ULONGLONG);
+ }
+ break;
+
+ case SFILE_INFO_KEY:
+ hf = IsValidFileHandle(hMpqOrFile);
+ if(hf != NULL)
+ {
+ pvSrcFileInfo = &hf->dwFileKey;
+ cbSrcFileInfo = sizeof(DWORD);
+ }
+ break;
+
+ case SFILE_INFO_KEY_UNFIXED:
+ hf = IsValidFileHandle(hMpqOrFile);
+ if(hf != NULL)
+ {
+ dwInt32Value = hf->dwFileKey;
+ if(hf->pFileEntry->dwFlags & MPQ_FILE_FIX_KEY)
+ dwInt32Value = (dwInt32Value ^ hf->pFileEntry->dwFileSize) - (DWORD)hf->MpqFilePos;
+ pvSrcFileInfo = &dwInt32Value;
+ cbSrcFileInfo = sizeof(DWORD);
+ }
+ break;
+
+ case SFILE_INFO_FILETIME:
+ hf = IsValidFileHandle(hMpqOrFile);
+ if(hf != NULL)
+ {
+ pvSrcFileInfo = &hf->pFileEntry->FileTime;
+ cbSrcFileInfo = sizeof(ULONGLONG);
+ }
+ break;
+
+ case SFILE_INFO_PATCH_CHAIN:
+ hf = IsValidFileHandle(hMpqOrFile);
+ if(hf != NULL)
+ pvSrcFileInfo = szPatchChain = GetFilePatchChain(hf, &cbSrcFileInfo);
+ break;
+ }
+
+ // Check if one of the cases case yielded a result
+ if(pvSrcFileInfo != NULL && pvFileInfo != NULL)
+ {
+ // Give the length needed
+ if(pcbLengthNeeded != NULL)
+ pcbLengthNeeded[0] = cbSrcFileInfo;
+
+ // Verify if we have enough space in the output buffer
+ if(cbSrcFileInfo <= cbFileInfo)
+ {
+ memcpy(pvFileInfo, pvSrcFileInfo, cbSrcFileInfo);
+ nError = ERROR_SUCCESS;
+ }
+ else
+ {
+ nError = ERROR_INSUFFICIENT_BUFFER;
+ }
+ }
+
+ // Free the allocated buffers, if any
+ if(szPatchChain != NULL)
+ STORM_FREE(szPatchChain);
+ if(pBlockTable != NULL)
+ STORM_FREE(pBlockTable);
+
+ // Set the last error value, if needed
+ if(nError != ERROR_SUCCESS)
+ SetLastError(nError);
+ return (nError == ERROR_SUCCESS);
+}