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Diffstat (limited to 'StormLib/src/SBaseSubTypes.cpp')
| -rw-r--r-- | StormLib/src/SBaseSubTypes.cpp | 618 |
1 files changed, 618 insertions, 0 deletions
diff --git a/StormLib/src/SBaseSubTypes.cpp b/StormLib/src/SBaseSubTypes.cpp new file mode 100644 index 000000000..6ab4a99c8 --- /dev/null +++ b/StormLib/src/SBaseSubTypes.cpp @@ -0,0 +1,618 @@ +/*****************************************************************************/ +/* SBaseSubTypes.cpp Copyright (c) Ladislav Zezula 2013 */ +/*---------------------------------------------------------------------------*/ +/* Conversion routines for archive formats that are similar to MPQ format */ +/*---------------------------------------------------------------------------*/ +/* Date Ver Who Comment */ +/* -------- ---- --- ------- */ +/* 02.11.11 1.00 Lad The first version of SBaseSubTypes.cpp */ +/*****************************************************************************/ + +#define __STORMLIB_SELF__ +#include "StormLib.h" +#include "StormCommon.h" + +/*****************************************************************************/ +/* */ +/* Support for SQP file format (War of the Immortals) */ +/* */ +/*****************************************************************************/ + +typedef struct _TSQPHeader +{ + // The ID_MPQ ('MPQ\x1A') signature + DWORD dwID; + + // Size of the archive header + DWORD dwHeaderSize; + + // 32-bit size of MPQ archive + DWORD dwArchiveSize; + + // Offset to the beginning of the hash table, relative to the beginning of the archive. + DWORD dwHashTablePos; + + // Offset to the beginning of the block table, relative to the beginning of the archive. + DWORD dwBlockTablePos; + + // Number of entries in the hash table. Must be a power of two, and must be less than 2^16 for + // the original MoPaQ format, or less than 2^20 for the Burning Crusade format. + DWORD dwHashTableSize; + + // Number of entries in the block table + DWORD dwBlockTableSize; + + // Must be zero for SQP files + USHORT wFormatVersion; + + // Power of two exponent specifying the number of 512-byte disk sectors in each file sector + // in the archive. The size of each file sector in the archive is 512 * 2 ^ wSectorSize. + USHORT wSectorSize; + +} TSQPHeader; + +typedef struct _TSQPHash +{ + // Most likely the lcLocale+wPlatform. + DWORD dwAlwaysZero; + + // If the hash table entry is valid, this is the index into the block table of the file. + // Otherwise, one of the following two values: + // - FFFFFFFFh: Hash table entry is empty, and has always been empty. + // Terminates searches for a given file. + // - FFFFFFFEh: Hash table entry is empty, but was valid at some point (a deleted file). + // Does not terminate searches for a given file. + DWORD dwBlockIndex; + + // The hash of the file path, using method A. + DWORD dwName1; + + // The hash of the file path, using method B. + DWORD dwName2; + +} TSQPHash; + +typedef struct _TSQPBlock +{ + // Offset of the beginning of the file, relative to the beginning of the archive. + DWORD dwFilePos; + + // Flags for the file. See MPQ_FILE_XXXX constants + DWORD dwFlags; + + // Compressed file size + DWORD dwCSize; + + // Uncompressed file size + DWORD dwFSize; + +} TSQPBlock; + +//----------------------------------------------------------------------------- +// Functions - SQP file format + +// This function converts SQP file header into MPQ file header +DWORD ConvertSqpHeaderToFormat4( + TMPQArchive * ha, + ULONGLONG FileSize, + DWORD dwFlags) +{ + TSQPHeader * pSqpHeader = (TSQPHeader *)ha->HeaderData; + TMPQHeader Header; + + // SQP files from War of the Immortal use MPQ file format with slightly + // modified structure. These fields have different position: + // + // Offset TMPQHeader TSQPHeader + // ------ ---------- ----------- + // 000C wFormatVersion dwHashTablePos (lo) + // 000E wSectorSize dwHashTablePos (hi) + // 001C dwBlockTableSize (lo) wBlockSize + // 001E dwHashTableSize (hi) wFormatVersion + + // Can't open the archive with certain flags + if(dwFlags & MPQ_OPEN_FORCE_MPQ_V1) + return ERROR_FILE_CORRUPT; + + // The file must not be greater than 4 GB + if((FileSize >> 0x20) != 0) + return ERROR_FILE_CORRUPT; + + // Translate the SQP header into a MPQ header + memset(&Header, 0, sizeof(TMPQHeader)); + Header.dwID = BSWAP_INT32_UNSIGNED(pSqpHeader->dwID); + Header.dwHeaderSize = BSWAP_INT32_UNSIGNED(pSqpHeader->dwHeaderSize); + Header.dwArchiveSize = BSWAP_INT32_UNSIGNED(pSqpHeader->dwArchiveSize); + Header.dwHashTablePos = BSWAP_INT32_UNSIGNED(pSqpHeader->dwHashTablePos); + Header.dwBlockTablePos = BSWAP_INT32_UNSIGNED(pSqpHeader->dwBlockTablePos); + Header.dwHashTableSize = BSWAP_INT32_UNSIGNED(pSqpHeader->dwHashTableSize); + Header.dwBlockTableSize = BSWAP_INT32_UNSIGNED(pSqpHeader->dwBlockTableSize); + Header.wFormatVersion = BSWAP_INT16_UNSIGNED(pSqpHeader->wFormatVersion); + Header.wSectorSize = BSWAP_INT16_UNSIGNED(pSqpHeader->wSectorSize); + + // Verify the SQP header + if(Header.dwID == g_dwMpqSignature && Header.dwHeaderSize == sizeof(TSQPHeader) && Header.dwArchiveSize == FileSize) + { + // Check for fixed values of version and sector size + if(Header.wFormatVersion == MPQ_FORMAT_VERSION_1 && Header.wSectorSize == 3) + { + // Initialize the fields of 3.0 header + Header.ArchiveSize64 = Header.dwArchiveSize; + Header.HashTableSize64 = Header.dwHashTableSize * sizeof(TMPQHash); + Header.BlockTableSize64 = Header.dwBlockTableSize * sizeof(TMPQBlock); + + // Copy the converted MPQ header back + memcpy(ha->HeaderData, &Header, sizeof(TMPQHeader)); + + // Mark this file as SQP file + ha->pfnHashString = HashStringSlash; + ha->dwFlags |= MPQ_FLAG_READ_ONLY; + ha->dwSubType = MPQ_SUBTYPE_SQP; + return ERROR_SUCCESS; + } + } + + return ERROR_FILE_CORRUPT; +} + +void * LoadSqpTable(TMPQArchive * ha, DWORD dwByteOffset, DWORD cbTableSize, DWORD dwKey) +{ + ULONGLONG ByteOffset; + LPBYTE pbSqpTable; + + // Allocate buffer for the table + pbSqpTable = STORM_ALLOC(BYTE, cbTableSize); + if(pbSqpTable != NULL) + { + // Load the table + ByteOffset = ha->MpqPos + dwByteOffset; + if(FileStream_Read(ha->pStream, &ByteOffset, pbSqpTable, cbTableSize)) + { + // Decrypt the SQP table + DecryptMpqBlock(pbSqpTable, cbTableSize, dwKey); + return pbSqpTable; + } + + // Free the table + STORM_FREE(pbSqpTable); + } + + return NULL; +} + +TMPQHash * LoadSqpHashTable(TMPQArchive * ha) +{ + TMPQHeader * pHeader = ha->pHeader; + TSQPHash * pSqpHashTable; + TSQPHash * pSqpHashEnd; + TSQPHash * pSqpHash; + TMPQHash * pMpqHash; + DWORD dwErrCode = ERROR_SUCCESS; + + // Load the hash table + pSqpHashTable = (TSQPHash *)LoadSqpTable(ha, pHeader->dwHashTablePos, pHeader->dwHashTableSize * sizeof(TSQPHash), MPQ_KEY_HASH_TABLE); + if(pSqpHashTable != NULL) + { + // Parse the entire hash table and convert it to MPQ hash table + pSqpHashEnd = pSqpHashTable + pHeader->dwHashTableSize; + pMpqHash = (TMPQHash *)pSqpHashTable; + for(pSqpHash = pSqpHashTable; pSqpHash < pSqpHashEnd; pSqpHash++, pMpqHash++) + { + // Ignore free entries + if(pSqpHash->dwBlockIndex != HASH_ENTRY_FREE) + { + // Check block index against the size of the block table + if(pHeader->dwBlockTableSize <= MPQ_BLOCK_INDEX(pSqpHash) && pSqpHash->dwBlockIndex < HASH_ENTRY_DELETED) + dwErrCode = ERROR_FILE_CORRUPT; + + // We do not support nonzero locale and platform ID + if(pSqpHash->dwAlwaysZero != 0 && pSqpHash->dwAlwaysZero != HASH_ENTRY_FREE) + dwErrCode = ERROR_FILE_CORRUPT; + + // Store the file name hash + pMpqHash->dwName1 = pSqpHash->dwName1; + pMpqHash->dwName2 = pSqpHash->dwName2; + + // Store the rest. Note that this must be done last, + // because block index corresponds to pMpqHash->dwName2 + pMpqHash->dwBlockIndex = MPQ_BLOCK_INDEX(pSqpHash); + pMpqHash->Platform = 0; + pMpqHash->lcLocale = 0; + } + } + + // If an error occured, we need to free the hash table + if(dwErrCode != ERROR_SUCCESS) + { + STORM_FREE(pSqpHashTable); + pSqpHashTable = NULL; + } + } + + // Return the converted hash table (or NULL on failure) + return (TMPQHash *)pSqpHashTable; +} + +// Loads the SQP Block table and converts it to a MPQ block table +TMPQBlock * LoadSqpBlockTable(TMPQArchive * ha) +{ + TMPQHeader * pHeader = ha->pHeader; + TSQPBlock * pSqpBlockTable; + TSQPBlock * pSqpBlockEnd; + TSQPBlock * pSqpBlock; + TMPQBlock * pMpqBlock; + DWORD dwFlags; + DWORD dwErrCode = ERROR_SUCCESS; + + // Load the hash table + pSqpBlockTable = (TSQPBlock *)LoadSqpTable(ha, pHeader->dwBlockTablePos, pHeader->dwBlockTableSize * sizeof(TSQPBlock), MPQ_KEY_BLOCK_TABLE); + if(pSqpBlockTable != NULL) + { + // Parse the entire hash table and convert it to MPQ hash table + pSqpBlockEnd = pSqpBlockTable + pHeader->dwBlockTableSize; + pMpqBlock = (TMPQBlock *)pSqpBlockTable; + for(pSqpBlock = pSqpBlockTable; pSqpBlock < pSqpBlockEnd; pSqpBlock++, pMpqBlock++) + { + // Check for valid flags + if(pSqpBlock->dwFlags & ~MPQ_FILE_VALID_FLAGS) + dwErrCode = ERROR_FILE_CORRUPT; + + // Convert SQP block table entry to MPQ block table entry + dwFlags = pSqpBlock->dwFlags; + pMpqBlock->dwCSize = pSqpBlock->dwCSize; + pMpqBlock->dwFSize = pSqpBlock->dwFSize; + pMpqBlock->dwFlags = dwFlags; + } + + // If an error occured, we need to free the hash table + if(dwErrCode != ERROR_SUCCESS) + { + STORM_FREE(pSqpBlockTable); + pSqpBlockTable = NULL; + } + } + + // Return the converted hash table (or NULL on failure) + return (TMPQBlock *)pSqpBlockTable; +} + +/*****************************************************************************/ +/* */ +/* Support for MPK file format (Longwu Online) */ +/* */ +/*****************************************************************************/ + +#define MPK_FILE_UNKNOWN_0001 0x00000001 // Seems to be always present +#define MPK_FILE_UNKNOWN_0010 0x00000010 // Seems to be always present +#define MPK_FILE_COMPRESSED 0x00000100 // Indicates a compressed file +#define MPK_FILE_UNKNOWN_2000 0x00002000 // Seems to be always present +#define MPK_FILE_EXISTS 0x01000000 // Seems to be always present + +typedef struct _TMPKHeader +{ + // The ID_MPK ('MPK\x1A') signature + DWORD dwID; + + // Contains '2000' + DWORD dwVersion; + + // 32-bit size of the archive + DWORD dwArchiveSize; + + // Size of the archive header + DWORD dwHeaderSize; + + DWORD dwHashTablePos; + DWORD dwHashTableSize; + DWORD dwBlockTablePos; + DWORD dwBlockTableSize; + DWORD dwUnknownPos; + DWORD dwUnknownSize; +} TMPKHeader; + + +typedef struct _TMPKHash +{ + // The hash of the file path, using method A. + DWORD dwName1; + + // The hash of the file path, using method B. + DWORD dwName2; + + // The hash of the file path, using method C. + DWORD dwName3; + + // If the hash table entry is valid, this is the index into the block table of the file. + // Otherwise, one of the following two values: + // - FFFFFFFFh: Hash table entry is empty, and has always been empty. + // Terminates searches for a given file. + // - FFFFFFFEh: Hash table entry is empty, but was valid at some point (a deleted file). + // Does not terminate searches for a given file. + DWORD dwBlockIndex; + +} TMPKHash; + +typedef struct _TMPKBlock +{ + DWORD dwFlags; // 0x1121 - Compressed , 0x1120 - Not compressed + DWORD dwFilePos; // Offset of the beginning of the file, relative to the beginning of the archive. + DWORD dwFSize; // Uncompressed file size + DWORD dwCSize; // Compressed file size + DWORD dwUnknown; // 0x86364E6D +} TMPKBlock; + +//----------------------------------------------------------------------------- +// Local variables - MPK file format + +static const unsigned char MpkDecryptionKey[512] = +{ + 0x60, 0x20, 0x29, 0xE1, 0x01, 0xCE, 0xAA, 0xFE, 0xA3, 0xAB, 0x8E, 0x30, 0xAF, 0x02, 0xD1, 0x7D, + 0x41, 0x24, 0x06, 0xBD, 0xAE, 0xBE, 0x43, 0xC3, 0xBA, 0xB7, 0x08, 0x13, 0x51, 0xCF, 0xF8, 0xF7, + 0x25, 0x42, 0xA5, 0x4A, 0xDA, 0x0F, 0x52, 0x1C, 0x90, 0x3B, 0x63, 0x49, 0x36, 0xF6, 0xDD, 0x1B, + 0xEA, 0x58, 0xD4, 0x40, 0x70, 0x61, 0x55, 0x09, 0xCD, 0x0B, 0xA2, 0x4B, 0x68, 0x2C, 0x8A, 0xF1, + 0x3C, 0x3A, 0x65, 0xBB, 0xA1, 0xA8, 0x23, 0x97, 0xFD, 0x15, 0x00, 0x94, 0x88, 0x33, 0x59, 0xE9, + 0xFB, 0x69, 0x21, 0xEF, 0x85, 0x5B, 0x57, 0x6C, 0xFA, 0xB5, 0xEE, 0xB8, 0x71, 0xDC, 0xB1, 0x38, + 0x0C, 0x0A, 0x5C, 0x56, 0xC9, 0xB4, 0x84, 0x17, 0x1E, 0xE5, 0xD3, 0x5A, 0xCC, 0xFC, 0x11, 0x86, + 0x7F, 0x45, 0x4F, 0x54, 0xC8, 0x8D, 0x73, 0x89, 0x79, 0x5D, 0xB3, 0xBF, 0xB9, 0xE3, 0x93, 0xE4, + 0x6F, 0x35, 0x2D, 0x46, 0xF2, 0x76, 0xC5, 0x7E, 0xE2, 0xA4, 0xE6, 0xD9, 0x6E, 0x48, 0x34, 0x2B, + 0xC6, 0x5F, 0xBC, 0xA0, 0x6D, 0x0D, 0x47, 0x6B, 0x95, 0x96, 0x92, 0x91, 0xB2, 0x27, 0xEB, 0x9E, + 0xEC, 0x8F, 0xDF, 0x9C, 0x74, 0x99, 0x64, 0xF5, 0xFF, 0x28, 0xB6, 0x37, 0xF3, 0x7C, 0x81, 0x03, + 0x44, 0x62, 0x1F, 0xDB, 0x04, 0x7B, 0xB0, 0x9B, 0x31, 0xA7, 0xDE, 0x78, 0x9F, 0xAD, 0x0E, 0x3F, + 0x3E, 0x4D, 0xC7, 0xD7, 0x39, 0x19, 0x5E, 0xC2, 0xD0, 0xAC, 0xE8, 0x1A, 0x87, 0x8B, 0x07, 0x05, + 0x22, 0xED, 0x72, 0x2E, 0x1D, 0xC1, 0xA9, 0xD6, 0xE0, 0x83, 0xD5, 0xD8, 0xCB, 0x80, 0xF0, 0x66, + 0x7A, 0x9D, 0x50, 0xF9, 0x10, 0x4E, 0x16, 0x14, 0x77, 0x75, 0x6A, 0x67, 0xD2, 0xC0, 0xA6, 0xC4, + 0x53, 0x8C, 0x32, 0xCA, 0x82, 0x2A, 0x18, 0x9A, 0xF4, 0x4C, 0x3D, 0x26, 0x12, 0xE7, 0x98, 0x2F, + 0x4A, 0x04, 0x0D, 0xAF, 0xB4, 0xCF, 0x12, 0xCE, 0x1A, 0x37, 0x61, 0x39, 0x60, 0x95, 0xBE, 0x25, + 0xE4, 0x6E, 0xFC, 0x1B, 0xE7, 0x49, 0xE6, 0x67, 0xF6, 0xC5, 0xCB, 0x2F, 0x27, 0xD4, 0x68, 0xB2, + 0x01, 0x52, 0xD0, 0x46, 0x11, 0x20, 0xFB, 0x9D, 0xA9, 0x02, 0xF5, 0x8F, 0x3D, 0x82, 0xD3, 0xFF, + 0x0B, 0xB8, 0xF2, 0x4D, 0x8E, 0x81, 0x2C, 0xAB, 0x5F, 0xC4, 0x41, 0x29, 0x40, 0xFA, 0xC0, 0xBF, + 0x33, 0x10, 0x21, 0x16, 0xB0, 0x71, 0x83, 0x96, 0x8D, 0x2B, 0x23, 0x3B, 0xF9, 0xC1, 0xE5, 0x72, + 0xE2, 0x1C, 0x26, 0xF0, 0x73, 0x36, 0x63, 0x56, 0x31, 0x4E, 0x6B, 0x55, 0x62, 0x79, 0xC6, 0x91, + 0x00, 0x35, 0xB1, 0x2A, 0xA6, 0x42, 0xDF, 0xEB, 0x3C, 0x51, 0xEA, 0x97, 0x57, 0x94, 0x8C, 0x80, + 0x34, 0x5C, 0xD2, 0x76, 0xA4, 0xE9, 0x85, 0xE8, 0xBB, 0x78, 0xE0, 0xB5, 0xAD, 0x0F, 0x87, 0x70, + 0xDD, 0xAE, 0xF4, 0xD9, 0x66, 0x54, 0x6F, 0xCC, 0x4C, 0x77, 0x3E, 0xCD, 0xF1, 0x75, 0x0A, 0xA1, + 0x28, 0x9B, 0x9A, 0x7E, 0x4B, 0x98, 0x99, 0x47, 0xFE, 0xA5, 0xF7, 0xB7, 0xA3, 0xE1, 0x9F, 0xBC, + 0x93, 0x44, 0x3A, 0x08, 0x89, 0x22, 0xEE, 0xB9, 0x45, 0xD6, 0x06, 0x09, 0xC9, 0xBD, 0x14, 0x0C, + 0xB6, 0x5E, 0x9C, 0x7A, 0x65, 0x59, 0xAA, 0x19, 0x5B, 0x7C, 0x18, 0x43, 0x92, 0x13, 0x15, 0x7B, + 0xED, 0xD5, 0xC7, 0x17, 0xEF, 0x86, 0x90, 0xC2, 0x74, 0x64, 0xF3, 0xDC, 0x6C, 0x38, 0x05, 0x1D, + 0xC8, 0x0E, 0xEC, 0x6A, 0x32, 0xDA, 0xD7, 0xC3, 0xDB, 0x8B, 0x24, 0xB3, 0x5D, 0x2E, 0xBA, 0xA2, + 0xD8, 0x03, 0x88, 0x7D, 0x7F, 0x69, 0x8A, 0xFD, 0xCA, 0x4F, 0x30, 0x9E, 0xA0, 0xD1, 0x5A, 0x53, + 0xDE, 0x3F, 0x84, 0xAC, 0xF8, 0xA7, 0x2D, 0x1F, 0x1E, 0xE3, 0x58, 0x50, 0x6D, 0x48, 0x07, 0xA8 +}; + +//----------------------------------------------------------------------------- +// Functions - MPK file format + +// This function converts MPK file header into MPQ file header +DWORD ConvertMpkHeaderToFormat4( + TMPQArchive * ha, + ULONGLONG FileSize, + DWORD dwFlags) +{ + TMPKHeader * pMpkHeader = (TMPKHeader *)ha->HeaderData; + TMPQHeader Header; + + // Can't open the archive with certain flags + if(dwFlags & MPQ_OPEN_FORCE_MPQ_V1) + return ERROR_FILE_CORRUPT; + + // Translate the MPK header into a MPQ header + // Note: Hash table size and block table size are in bytes, not in entries + memset(&Header, 0, sizeof(TMPQHeader)); + Header.dwID = BSWAP_INT32_UNSIGNED(pMpkHeader->dwID); + Header.dwArchiveSize = BSWAP_INT32_UNSIGNED(pMpkHeader->dwArchiveSize); + Header.dwHeaderSize = BSWAP_INT32_UNSIGNED(pMpkHeader->dwHeaderSize); + Header.dwHashTablePos = BSWAP_INT32_UNSIGNED(pMpkHeader->dwHashTablePos); + Header.dwHashTableSize = BSWAP_INT32_UNSIGNED(pMpkHeader->dwHashTableSize) / sizeof(TMPKHash); + Header.dwBlockTablePos = BSWAP_INT32_UNSIGNED(pMpkHeader->dwBlockTablePos); + Header.dwBlockTableSize = BSWAP_INT32_UNSIGNED(pMpkHeader->dwBlockTableSize) / sizeof(TMPKBlock); +// Header.dwUnknownPos = BSWAP_INT32_UNSIGNED(pMpkHeader->dwUnknownPos); +// Header.dwUnknownSize = BSWAP_INT32_UNSIGNED(pMpkHeader->dwUnknownSize); + assert(Header.dwHeaderSize == sizeof(TMPKHeader)); + + // Verify the MPK header + if(Header.dwID == ID_MPK && Header.dwHeaderSize == sizeof(TMPKHeader) && Header.dwArchiveSize == (DWORD)FileSize) + { + // The header ID must be ID_MPQ + Header.dwID = g_dwMpqSignature; + Header.wFormatVersion = MPQ_FORMAT_VERSION_1; + Header.wSectorSize = 3; + + // Initialize the fields of 3.0 header + Header.ArchiveSize64 = Header.dwArchiveSize; + Header.HashTableSize64 = Header.dwHashTableSize * sizeof(TMPQHash); + Header.BlockTableSize64 = Header.dwBlockTableSize * sizeof(TMPQBlock); + + // Copy the converted MPQ header back + memcpy(ha->HeaderData, &Header, sizeof(TMPQHeader)); + + // Mark this file as MPK file + ha->pfnHashString = HashStringLower; + ha->dwFlags |= MPQ_FLAG_READ_ONLY; + ha->dwSubType = MPQ_SUBTYPE_MPK; + return ERROR_SUCCESS; + } + return ERROR_FILE_CORRUPT; +} + +// Attempts to search a free hash entry in the hash table being converted. +// The created hash table must always be of nonzero size, +// should have no duplicated items and no deleted entries +TMPQHash * FindFreeHashEntry(TMPQHash * pHashTable, DWORD dwHashTableSize, DWORD dwStartIndex) +{ + TMPQHash * pHash; + DWORD dwIndex; + + // Set the initial index + dwStartIndex = dwIndex = (dwStartIndex & (dwHashTableSize - 1)); + assert(dwHashTableSize != 0); + + // Search the hash table and return the found entries in the following priority: + for(;;) + { + // We are not expecting to find matching entry in the hash table being built + // We are not expecting to find deleted entry either + pHash = pHashTable + dwIndex; + + // If we found a free entry, we need to stop searching + if(pHash->dwBlockIndex == HASH_ENTRY_FREE) + return pHash; + + // Move to the next hash entry. + // If we reached the starting entry, it's failure. + dwIndex = (dwIndex + 1) & (dwHashTableSize - 1); + if(dwIndex == dwStartIndex) + break; + } + + // We haven't found anything + assert(false); + return NULL; +} + +void DecryptMpkTable(void * pvMpkTable, size_t cbSize) +{ + LPBYTE pbMpkTable = (LPBYTE)pvMpkTable; + + for(size_t i = 0; i < cbSize; i++) + pbMpkTable[i] = MpkDecryptionKey[pbMpkTable[i]]; +} + +void * LoadMpkTable(TMPQArchive * ha, DWORD dwByteOffset, DWORD cbTableSize) +{ + ULONGLONG ByteOffset; + LPBYTE pbMpkTable = NULL; + + // Allocate space for the table + pbMpkTable = STORM_ALLOC(BYTE, cbTableSize); + if(pbMpkTable != NULL) + { + // Load and the MPK hash table + ByteOffset = ha->MpqPos + dwByteOffset; + if(FileStream_Read(ha->pStream, &ByteOffset, pbMpkTable, cbTableSize)) + { + // Decrypt the table + DecryptMpkTable(pbMpkTable, cbTableSize); + return pbMpkTable; + } + + // Free the MPK table + STORM_FREE(pbMpkTable); + pbMpkTable = NULL; + } + + // Return the table + return pbMpkTable; +} + +TMPQHash * LoadMpkHashTable(TMPQArchive * ha) +{ + TMPQHeader * pHeader = ha->pHeader; + TMPQHash * pHashTable = NULL; + TMPKHash * pMpkHash; + TMPQHash * pHash = NULL; + DWORD dwHashTableSize = pHeader->dwHashTableSize; + + // MPKs use different hash table searching. + // Instead of using MPQ_HASH_TABLE_INDEX hash as index, + // they store the value directly in the hash table. + // Also for faster searching, the hash table is sorted ascending by the value + + // Load and decrypt the MPK hash table. + pMpkHash = (TMPKHash *)LoadMpkTable(ha, pHeader->dwHashTablePos, pHeader->dwHashTableSize * sizeof(TMPKHash)); + if(pMpkHash != NULL) + { + // Calculate the hash table size as if it was real MPQ hash table + pHeader->dwHashTableSize = GetNearestPowerOfTwo(pHeader->dwHashTableSize); + pHeader->HashTableSize64 = pHeader->dwHashTableSize * sizeof(TMPQHash); + + // Now allocate table that will serve like a true MPQ hash table, + // so we translate the MPK hash table to MPQ hash table + pHashTable = STORM_ALLOC(TMPQHash, pHeader->dwHashTableSize); + if(pHashTable != NULL) + { + // Set the entire hash table to free + memset(pHashTable, 0xFF, (size_t)pHeader->HashTableSize64); + + // Copy the MPK hash table into MPQ hash table + for(DWORD i = 0; i < dwHashTableSize; i++) + { + // Finds the free hash entry in the hash table + // We don't expect any errors here, because we are putting files to empty hash table + pHash = FindFreeHashEntry(pHashTable, pHeader->dwHashTableSize, pMpkHash[i].dwName1); + assert(pHash->dwBlockIndex == HASH_ENTRY_FREE); + + // Copy the MPK hash entry to the hash table + pHash->dwBlockIndex = pMpkHash[i].dwBlockIndex; + pHash->Platform = 0; + pHash->lcLocale = 0; + pHash->dwName1 = pMpkHash[i].dwName2; + pHash->dwName2 = pMpkHash[i].dwName3; + } + } + + // Free the temporary hash table + STORM_FREE(pMpkHash); + } + + return pHashTable; +} + +static DWORD ConvertMpkFlagsToMpqFlags(DWORD dwMpkFlags) +{ + DWORD dwMpqFlags = MPQ_FILE_EXISTS; + + // Check for flags that are always present + assert((dwMpkFlags & MPK_FILE_UNKNOWN_0001) != 0); + assert((dwMpkFlags & MPK_FILE_UNKNOWN_0010) != 0); + assert((dwMpkFlags & MPK_FILE_UNKNOWN_2000) != 0); + assert((dwMpkFlags & MPK_FILE_EXISTS) != 0); + + // Append the compressed flag + dwMpqFlags |= (dwMpkFlags & MPK_FILE_COMPRESSED) ? MPQ_FILE_COMPRESS : 0; + + // All files in the MPQ seem to be single unit files + dwMpqFlags |= MPQ_FILE_ENCRYPTED | MPQ_FILE_SINGLE_UNIT; + + return dwMpqFlags; +} + +TMPQBlock * LoadMpkBlockTable(TMPQArchive * ha) +{ + TMPQHeader * pHeader = ha->pHeader; + TMPKBlock * pMpkBlockTable; + TMPKBlock * pMpkBlockEnd; + TMPQBlock * pBlockTable = NULL; + TMPKBlock * pMpkBlock; + TMPQBlock * pMpqBlock; + + // Load and decrypt the MPK block table + pMpkBlockTable = pMpkBlock = (TMPKBlock *)LoadMpkTable(ha, pHeader->dwBlockTablePos, pHeader->dwBlockTableSize * sizeof(TMPKBlock)); + if(pMpkBlockTable != NULL) + { + // Allocate buffer for MPQ-like block table + pBlockTable = pMpqBlock = STORM_ALLOC(TMPQBlock, pHeader->dwBlockTableSize); + if(pBlockTable != NULL) + { + // Convert the MPK block table to MPQ block table + pMpkBlockEnd = pMpkBlockTable + pHeader->dwBlockTableSize; + while(pMpkBlock < pMpkBlockEnd) + { + // Translate the MPK block table entry to MPQ block table entry + pMpqBlock->dwFilePos = pMpkBlock->dwFilePos; + pMpqBlock->dwCSize = pMpkBlock->dwCSize; + pMpqBlock->dwFSize = pMpkBlock->dwFSize; + pMpqBlock->dwFlags = ConvertMpkFlagsToMpqFlags(pMpkBlock->dwFlags); + + // Move both + pMpkBlock++; + pMpqBlock++; + } + } + + // Free the MPK block table + STORM_FREE(pMpkBlockTable); + } + + return pBlockTable; +} |