Initial creation

1 files changed, 255 insertions, 0 deletions

diff --git a/src/SFileCreateArchive.cpp b/src/SFileCreateArchive.cpp
new file mode 100644
index 0000000..84109d3
--- /dev/null
+++ b/src/SFileCreateArchive.cpp
@@ -0,0 +1,255 @@
+/*****************************************************************************/
+/* SFileCreateArchive.cpp                 Copyright (c) Ladislav Zezula 2003 */
+/*---------------------------------------------------------------------------*/
+/* MPQ Editing functions                                                     */
+/*---------------------------------------------------------------------------*/
+/*   Date    Ver   Who  Comment                                              */
+/* --------  ----  ---  -------                                              */
+/* 24.03.03  1.00  Lad  Splitted from SFileOpenArchive.cpp                   */
+/* 08.06.10  1.00  Lad  Renamed to SFileCreateArchive.cpp                    */
+/*****************************************************************************/
+
+#define __STORMLIB_SELF__
+#include "StormLib.h"
+#include "StormCommon.h"
+
+//-----------------------------------------------------------------------------
+// Local variables
+
+static const DWORD MpqHeaderSizes[] =
+{
+    MPQ_HEADER_SIZE_V1,
+    MPQ_HEADER_SIZE_V2,
+    MPQ_HEADER_SIZE_V3,
+    MPQ_HEADER_SIZE_V4
+};
+
+//-----------------------------------------------------------------------------
+// Local functions
+
+static USHORT GetSectorSizeShift(DWORD dwSectorSize)
+{
+    USHORT wSectorSizeShift = 0;
+
+    while(dwSectorSize > 0x200)
+    {
+        dwSectorSize >>= 1;
+        wSectorSizeShift++;
+    }
+
+    return wSectorSizeShift;
+}
+
+static int WriteNakedMPQHeader(TMPQArchive * ha)
+{
+    TMPQHeader * pHeader = ha->pHeader;
+    TMPQHeader Header;
+    DWORD dwBytesToWrite = pHeader->dwHeaderSize;
+    int nError = ERROR_SUCCESS;
+
+    // Prepare the naked MPQ header
+    memset(&Header, 0, sizeof(TMPQHeader));
+    Header.dwID           = pHeader->dwID;
+    Header.dwHeaderSize   = pHeader->dwHeaderSize;
+    Header.dwArchiveSize  = pHeader->dwHeaderSize;
+    Header.wFormatVersion = pHeader->wFormatVersion;
+    Header.wSectorSize    = pHeader->wSectorSize;
+
+    // Write it to the file
+    BSWAP_TMPQHEADER(&Header);
+    if(!FileStream_Write(ha->pStream, &ha->MpqPos, &Header, dwBytesToWrite))
+        nError = GetLastError();
+
+    return nError;
+}
+
+//-----------------------------------------------------------------------------
+// Creates a new MPQ archive.
+
+bool WINAPI SFileCreateArchive(const TCHAR * szMpqName, DWORD dwFlags, DWORD dwMaxFileCount, HANDLE * phMpq)
+{
+    SFILE_CREATE_MPQ CreateInfo;
+
+    // Fill the create structure
+    memset(&CreateInfo, 0, sizeof(SFILE_CREATE_MPQ));
+    CreateInfo.cbSize         = sizeof(SFILE_CREATE_MPQ);
+    CreateInfo.dwMpqVersion   = (dwFlags & MPQ_CREATE_ARCHIVE_VMASK) >> FLAGS_TO_FORMAT_SHIFT;
+    CreateInfo.dwStreamFlags  = STREAM_PROVIDER_LINEAR | BASE_PROVIDER_FILE;
+    CreateInfo.dwAttrFlags    = (dwFlags & MPQ_CREATE_ATTRIBUTES) ? MPQ_ATTRIBUTE_ALL : 0;
+    CreateInfo.dwSectorSize   = (CreateInfo.dwMpqVersion >= MPQ_FORMAT_VERSION_3) ? 0x4000 : 0x1000;
+    CreateInfo.dwRawChunkSize = (CreateInfo.dwMpqVersion >= MPQ_FORMAT_VERSION_4) ? 0x4000 : 0;
+    CreateInfo.dwMaxFileCount = dwMaxFileCount;
+    return SFileCreateArchive2(szMpqName, &CreateInfo, phMpq);
+}
+
+bool WINAPI SFileCreateArchive2(const TCHAR * szMpqName, PSFILE_CREATE_MPQ pCreateInfo, HANDLE * phMpq)
+{
+    TFileStream * pStream = NULL;           // File stream
+    TMPQArchive * ha = NULL;                // MPQ archive handle
+    ULONGLONG MpqPos = 0;                   // Position of MPQ header in the file
+    HANDLE hMpq = NULL;
+    DWORD dwBlockTableSize = 0;             // Initial block table size
+    DWORD dwHashTableSize = 0;
+    DWORD dwMaxFileCount;
+    int nError = ERROR_SUCCESS;
+
+    // Check the parameters, if they are valid
+    if(szMpqName == NULL || *szMpqName == 0 || pCreateInfo == NULL || phMpq == NULL)
+    {
+        SetLastError(ERROR_INVALID_PARAMETER);
+        return false;
+    }
+
+    // Verify if all variables in SFILE_CREATE_MPQ are correct
+    if((pCreateInfo->cbSize == 0 || pCreateInfo->cbSize > sizeof(SFILE_CREATE_MPQ)) ||
+       (pCreateInfo->dwMpqVersion > MPQ_FORMAT_VERSION_4)                        ||
+       (pCreateInfo->pvUserData != NULL || pCreateInfo->cbUserData != 0)            ||
+       (pCreateInfo->dwAttrFlags & ~MPQ_ATTRIBUTE_ALL)                              ||
+       (pCreateInfo->dwSectorSize & (pCreateInfo->dwSectorSize - 1))                ||
+       (pCreateInfo->dwRawChunkSize & (pCreateInfo->dwRawChunkSize - 1))            ||
+       (pCreateInfo->dwMaxFileCount < 4))
+    {
+        SetLastError(ERROR_INVALID_PARAMETER);
+        return false;
+    }
+
+    // One time initialization of MPQ cryptography
+    InitializeMpqCryptography();
+
+    // We verify if the file already exists and if it's a MPQ archive.
+    // If yes, we won't allow to overwrite it.
+    if(SFileOpenArchive(szMpqName, 0, STREAM_PROVIDER_LINEAR | BASE_PROVIDER_FILE | MPQ_OPEN_NO_ATTRIBUTES | MPQ_OPEN_NO_LISTFILE, &hMpq))
+    {
+        SFileCloseArchive(hMpq);
+        SetLastError(ERROR_ALREADY_EXISTS);
+        return false;
+    }
+
+    //
+    // At this point, we have to create the archive.
+    // - If the file exists, convert it to MPQ archive.
+    // - If the file doesn't exist, create new empty file
+    //
+
+    pStream = FileStream_OpenFile(szMpqName, pCreateInfo->dwStreamFlags);
+    if(pStream == NULL)
+    {
+        pStream = FileStream_CreateFile(szMpqName, pCreateInfo->dwStreamFlags);
+        if(pStream == NULL)
+            return false;
+    }
+
+    // Increment the maximum amount of files to have space
+    // for listfile and attributes file
+    dwMaxFileCount = pCreateInfo->dwMaxFileCount;
+    if(pCreateInfo->dwAttrFlags != 0)
+        dwMaxFileCount++;
+    dwMaxFileCount++;
+
+    // If file count is not zero, initialize the hash table size
+    dwHashTableSize = GetHashTableSizeForFileCount(dwMaxFileCount);
+
+    // Retrieve the file size and round it up to 0x200 bytes
+    FileStream_GetSize(pStream, &MpqPos);
+    MpqPos = (MpqPos + 0x1FF) & (ULONGLONG)0xFFFFFFFFFFFFFE00ULL;
+    if(!FileStream_SetSize(pStream, MpqPos))
+        nError = GetLastError();
+
+#ifdef _DEBUG    
+    // Debug code, used for testing StormLib
+//  dwBlockTableSize = dwHashTableSize * 2;
+#endif
+
+    // Create the archive handle
+    if(nError == ERROR_SUCCESS)
+    {
+        if((ha = STORM_ALLOC(TMPQArchive, 1)) == NULL)
+            nError = ERROR_NOT_ENOUGH_MEMORY;
+    }
+
+    // Fill the MPQ archive handle structure
+    if(nError == ERROR_SUCCESS)
+    {
+        memset(ha, 0, sizeof(TMPQArchive));
+        ha->pStream         = pStream;
+        ha->dwSectorSize    = pCreateInfo->dwSectorSize;
+        ha->UserDataPos     = MpqPos;
+        ha->MpqPos          = MpqPos;
+        ha->pHeader         = (TMPQHeader *)ha->HeaderData;
+        ha->dwMaxFileCount  = dwMaxFileCount;
+        ha->dwFileTableSize = 0;
+        ha->dwFileFlags1    = pCreateInfo->dwFileFlags1;
+        ha->dwFileFlags2    = pCreateInfo->dwFileFlags2;
+        ha->dwFlags         = 0;
+
+        // Setup the attributes
+        ha->dwAttrFlags     = pCreateInfo->dwAttrFlags;
+        pStream = NULL;
+    }
+
+    // Fill the MPQ header
+    if(nError == ERROR_SUCCESS)
+    {
+        TMPQHeader * pHeader = ha->pHeader;
+
+        // Fill the MPQ header
+        memset(pHeader, 0, sizeof(ha->HeaderData));
+        pHeader->dwID             = ID_MPQ;
+        pHeader->dwHeaderSize     = MpqHeaderSizes[pCreateInfo->dwMpqVersion];
+        pHeader->dwArchiveSize    = pHeader->dwHeaderSize + dwHashTableSize * sizeof(TMPQHash);
+        pHeader->wFormatVersion   = (USHORT)pCreateInfo->dwMpqVersion;
+        pHeader->wSectorSize      = GetSectorSizeShift(ha->dwSectorSize);
+        pHeader->dwHashTablePos   = pHeader->dwHeaderSize;
+        pHeader->dwHashTableSize  = dwHashTableSize;
+        pHeader->dwBlockTablePos  = pHeader->dwHashTablePos + dwHashTableSize * sizeof(TMPQHash);
+        pHeader->dwBlockTableSize = dwBlockTableSize;
+
+        // For MPQs version 4 and higher, we set the size of raw data block
+        // for calculating MD5
+        if(pCreateInfo->dwMpqVersion >= MPQ_FORMAT_VERSION_4)
+            pHeader->dwRawChunkSize = pCreateInfo->dwRawChunkSize;
+
+        // Write the naked MPQ header
+        nError = WriteNakedMPQHeader(ha);
+
+        // Remember that the (listfile) and (attributes) need to be saved
+        ha->dwFlags |= MPQ_FLAG_CHANGED | MPQ_FLAG_INV_LISTFILE | MPQ_FLAG_INV_ATTRIBUTES;
+    }
+
+    // Create initial HET table, if the caller required an MPQ format 3.0 or newer
+    if(nError == ERROR_SUCCESS && pCreateInfo->dwMpqVersion >= MPQ_FORMAT_VERSION_3)
+    {
+        ha->pHetTable = CreateHetTable(ha->dwMaxFileCount, 0x40, true);
+        if(ha->pHetTable == NULL)
+            nError = ERROR_NOT_ENOUGH_MEMORY;
+    }
+
+    // Create initial hash table
+    if(nError == ERROR_SUCCESS)
+    {
+        nError = CreateHashTable(ha, dwHashTableSize);
+    }
+
+    // Create initial file table
+    if(nError == ERROR_SUCCESS)
+    {
+        ha->pFileTable = STORM_ALLOC(TFileEntry, ha->dwMaxFileCount);
+        if(ha->pFileTable != NULL)
+            memset(ha->pFileTable, 0x00, sizeof(TFileEntry) * ha->dwMaxFileCount);
+        else
+            nError = ERROR_NOT_ENOUGH_MEMORY;
+    }
+
+    // Cleanup : If an error, delete all buffers and return
+    if(nError != ERROR_SUCCESS)
+    {
+        FileStream_Close(pStream);
+        FreeMPQArchive(ha);
+        SetLastError(nError);
+        ha = NULL;
+    }
+    
+    // Return the values
+    *phMpq = (HANDLE)ha;
+    return (nError == ERROR_SUCCESS);
+}