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index 0f5acaf..628d29f 100644 (file)
@@ -13,6 +13,7 @@
 
 #include "../SComp/SComp.h"
 
+#include "SFmpqInternal.h"
 #include "MpqCrypt.h"
 #include "MpqHashTable.h"
 #include "MpqBlockTable.h"
@@ -53,6 +54,7 @@ SFMPQLIBMODULE::~SFMPQLIBMODULE()
 #endif
 
 LCID LocaleID = 0;
+WORD wCreationVersion = 0;
 BOOL SFMpqInit = FALSE;
 HINSTANCE hStorm = 0;
 #ifdef _USRDLL
@@ -110,7 +112,7 @@ void LoadStorm();
 void FreeStorm();
 
 BOOL WINAPI MpqOpenArchiveEx(LPCSTR lpFileName, DWORD dwPriority, DWORD dwFlags, MPQHANDLE *hMPQ, DWORD dwFlags2, DWORD dwMaximumFilesInArchive, DWORD dwBlockSize);
-DWORD WINAPI FindMpqHeaderAtLocation(HANDLE hFile, DWORD dwStart, DWORD dwLength);
+UInt64 WINAPI SFileFindMpqHeaderEx(HANDLE hFile, UInt64 qwStart = 0, UInt64 qwLength = 0);
 DWORD GetFullPath(LPCSTR lpFileName, char *lpBuffer, DWORD dwBufferLength);
 MPQHANDLE GetHashTableEntry(MPQHANDLE hMPQ, LPCSTR lpFileName, LCID FileLocale);
 MPQHANDLE GetHashTableEntryOfHash(MPQHANDLE hMPQ, DWORD dwTablePos, DWORD dwNameHashA, DWORD dwNameHashB, LCID FileLocale);
@@ -284,18 +286,155 @@ void SFMPQAPI WINAPI AboutSFMpq()
 #endif
 }
 
-BOOL WINAPI MpqOpenArchiveEx(LPCSTR lpFileName, DWORD dwPriority, DWORD dwFlags, MPQHANDLE *hMPQ, DWORD dwFlags2, DWORD dwMaximumFilesInArchive, DWORD dwBlockSize)
+BOOL MpqWriteHeaders(MPQARCHIVE *mpqOpenArc)
+{
+       DWORD nIOLen;
+       BOOL bReturnVal = FALSE;
+
+       SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart, FILE_BEGIN);
+       bReturnVal = WriteFile(mpqOpenArc->hFile, &mpqOpenArc->MpqHeader, sizeof(MPQHEADER), &nIOLen, 0);
+
+       if (bReturnVal && mpqOpenArc->MpqHeader.wVersion > 0) {
+               bReturnVal = WriteFile(mpqOpenArc->hFile, &mpqOpenArc->MpqHeader_Ex, sizeof(MPQHEADER_EX), &nIOLen, 0);
+       }
+
+       return bReturnVal;
+}
+
+BOOL MpqWriteNewArchive(MPQARCHIVE *mpqOpenArc)
 {
-       DWORD flen,tsz;
+       DWORD nIOLen;
+
+       memcpy(&mpqOpenArc->MpqHeader.dwMPQID,ID_MPQ,4);
+       mpqOpenArc->MpqHeader.wVersion = wCreationVersion;
+
+       if (mpqOpenArc->MpqHeader.wVersion == 0)
+               mpqOpenArc->MpqHeader.dwHeaderSize = sizeof(MPQHEADER);
+       else
+               mpqOpenArc->MpqHeader.dwHeaderSize = sizeof(MPQHEADER) + sizeof(MPQHEADER_EX);
+       mpqOpenArc->dwHeaderSize = mpqOpenArc->MpqHeader.dwHeaderSize;
+
+       if (mpqOpenArc->MpqHeader.wBlockSize & 0xFFFF0000)
+               mpqOpenArc->MpqHeader.wBlockSize = DEFAULT_BLOCK_SIZE;
+       DWORD i;
+       for (i=1;i<mpqOpenArc->MpqHeader.dwHashTableSize;i*=2) {}
+       mpqOpenArc->MpqHeader.dwHashTableSize = i;
+       mpqOpenArc->MpqHeader.dwBlockTableSize = 0;
+       mpqOpenArc->MpqHeader.dwHashTableOffset = mpqOpenArc->dwHeaderSize;
+       mpqOpenArc->MpqHeader.dwBlockTableOffset = mpqOpenArc->dwHeaderSize + mpqOpenArc->MpqHeader.dwHashTableSize * sizeof(HASHTABLEENTRY);
+       mpqOpenArc->MpqHeader_Ex.qwExtendedBlockOffsetTable = 0;
+       mpqOpenArc->MpqHeader_Ex.wHashTableOffsetHigh = 0;
+       mpqOpenArc->MpqHeader_Ex.wBlockTableOffsetHigh = 0;
+       mpqOpenArc->MpqHeader.dwMPQSize = mpqOpenArc->dwHeaderSize + mpqOpenArc->MpqHeader.dwHashTableSize * sizeof(HASHTABLEENTRY);
+
+       if (!MpqWriteHeaders(mpqOpenArc))
+               return FALSE;
+
+       mpqOpenArc->lpHashTable = (HASHTABLEENTRY *)SFAlloc(sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize);
+       if (!mpqOpenArc->lpHashTable) {
+               return FALSE;
+       }
+       memset(mpqOpenArc->lpHashTable, 0xFF, sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize);
+       EncryptData((LPBYTE)mpqOpenArc->lpHashTable, sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize, dwHashTableKey);
+       if (!WriteFile(mpqOpenArc->hFile, mpqOpenArc->lpHashTable, sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize, &nIOLen, 0)) {
+               return FALSE;
+       }
+
+       return TRUE;
+}
+
+BOOL MpqReadExistingArchive(MPQARCHIVE *mpqOpenArc)
+{
+       DWORD nIOLen;
+
+       SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart, FILE_BEGIN);
+       if (!ReadFile(mpqOpenArc->hFile, &mpqOpenArc->MpqHeader, sizeof(MPQHEADER), &nIOLen, 0))
+               return FALSE;
+
+       if (mpqOpenArc->MpqHeader.wVersion > 0) {
+               mpqOpenArc->dwHeaderSize = sizeof(MPQHEADER) + sizeof(MPQHEADER_EX);
+               if (!ReadFile(mpqOpenArc->hFile, &mpqOpenArc->MpqHeader_Ex, sizeof(MPQHEADER_EX), &nIOLen, 0))
+                       return FALSE;
+       }
+       else {
+               mpqOpenArc->dwHeaderSize = sizeof(MPQHEADER);
+               memset(&mpqOpenArc->MpqHeader_Ex, 0, sizeof(MPQHEADER_EX));
+       }
+
+       mpqOpenArc->lpHashTable = (HASHTABLEENTRY *)SFAlloc(sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize);
+       if (!mpqOpenArc->lpHashTable)
+               return FALSE;
+
+       if (mpqOpenArc->MpqHeader.dwBlockTableSize) {
+               mpqOpenArc->lpBlockTable = (BLOCKTABLEENTRY *)SFAlloc((sizeof(BLOCKTABLEENTRY) + sizeof(UInt16)) * mpqOpenArc->MpqHeader.dwBlockTableSize);
+               mpqOpenArc->lpFileOffsetsHigh = (UInt16 *)(mpqOpenArc->lpBlockTable + mpqOpenArc->MpqHeader.dwBlockTableSize);
+               if (!mpqOpenArc->lpBlockTable)
+                       return FALSE;
+       }
+
+       SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->MpqHeader.dwHashTableOffset, mpqOpenArc->MpqHeader_Ex.wHashTableOffsetHigh), FILE_BEGIN);
+       if (!ReadFile(mpqOpenArc->hFile, mpqOpenArc->lpHashTable, sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize, &nIOLen, 0))
+               return FALSE;
+
+       if (mpqOpenArc->MpqHeader.dwBlockTableSize) {
+               SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->MpqHeader.dwBlockTableOffset, mpqOpenArc->MpqHeader_Ex.wBlockTableOffsetHigh), FILE_BEGIN);
+               if (!ReadFile(mpqOpenArc->hFile, mpqOpenArc->lpBlockTable, sizeof(BLOCKTABLEENTRY) * mpqOpenArc->MpqHeader.dwBlockTableSize, &nIOLen, 0))
+                       return FALSE;
+
+               if (mpqOpenArc->MpqHeader_Ex.qwExtendedBlockOffsetTable) {
+                       SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + mpqOpenArc->MpqHeader_Ex.qwExtendedBlockOffsetTable, FILE_BEGIN);
+                       if (!ReadFile(mpqOpenArc->hFile, mpqOpenArc->lpFileOffsetsHigh, sizeof(WORD) * mpqOpenArc->MpqHeader.dwBlockTableSize, &nIOLen, 0))
+                               return FALSE;
+               }
+       }
+
+       return TRUE;
+}
 
+BOOL MpqOpenArchiveInit(MPQARCHIVE *mpqOpenArc, LPCSTR lpFileName, DWORD dwPriority, DWORD dwFlags1, DWORD dwFlags2, DWORD dwExtraFlags)
+{
+       /*mpqOpenArc->lpFileName = (char *)SFAlloc(strlen(lpFileName)+1);
+       if(!mpqOpenArc->lpFileName)
+               return FALSE;*/
+       DecryptData((LPBYTE)mpqOpenArc->lpHashTable,sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize,dwHashTableKey);
+       if (mpqOpenArc->lpBlockTable) DecryptData((LPBYTE)mpqOpenArc->lpBlockTable,sizeof(BLOCKTABLEENTRY) * mpqOpenArc->MpqHeader.dwBlockTableSize,dwBlockTableKey);
+       mpqOpenArc->lpFileName = mpqOpenArc->szFileName;
+       strncpy(mpqOpenArc->lpFileName,lpFileName,259);
+       if (FirstLastMpq[1]) FirstLastMpq[1]->lpNextArc = mpqOpenArc;
+       mpqOpenArc->lpNextArc = (MPQARCHIVE *)FirstLastMpq;
+       mpqOpenArc->lpPrevArc = (MPQARCHIVE *)FirstLastMpq[1];
+       if (!FirstLastMpq[0]) {
+               mpqOpenArc->lpPrevArc = (MPQARCHIVE *)0xEAFC5E23;
+               FirstLastMpq[0] = mpqOpenArc;
+       }
+       FirstLastMpq[1] = mpqOpenArc;
+       mpqOpenArc->dwFlags1 = dwFlags1;
+       mpqOpenArc->dwPriority = dwPriority;
+       mpqOpenArc->lpLastReadFile = 0;
+       mpqOpenArc->dwUnk = 0;
+       mpqOpenArc->dwBlockSize = 512 << mpqOpenArc->MpqHeader.wBlockSize;
+       mpqOpenArc->lpLastReadBlock = 0;
+       mpqOpenArc->dwBufferSize = 0;
+       mpqOpenArc->qwMPQEnd = mpqOpenArc->qwMPQStart + mpqOpenArc->MpqHeader.dwMPQSize;
+       mpqOpenArc->lpMPQHeader = &mpqOpenArc->MpqHeader;
+       mpqOpenArc->qwReadOffset = mpqOpenArc->qwMPQEnd;
+       mpqOpenArc->dwRefCount = 1;
+       mpqOpenArc->dwFlags = dwFlags2;
+       mpqOpenArc->dwExtraFlags = dwExtraFlags;
+
+       return TRUE;
+}
+
+BOOL WINAPI MpqOpenArchiveEx(LPCSTR lpFileName, DWORD dwPriority, DWORD dwFlags, MPQHANDLE *hMPQ, DWORD dwFlags2, DWORD dwMaximumFilesInArchive, DWORD dwBlockSize)
+{
        if (!lpFileName || !hMPQ) {
                SetLastError(ERROR_INVALID_PARAMETER);
-               if (hMPQ) *hMPQ = 0;
+               if (hMPQ) *hMPQ = (MPQHANDLE)INVALID_HANDLE_VALUE;
                return FALSE;
        }
+       *hMPQ = (MPQHANDLE)INVALID_HANDLE_VALUE;
        if (!*lpFileName) {
                SetLastError(ERROR_INVALID_PARAMETER);
-               *hMPQ = 0;
                return FALSE;
        }
 
@@ -315,7 +454,7 @@ BOOL WINAPI MpqOpenArchiveEx(LPCSTR lpFileName, DWORD dwPriority, DWORD dwFlags,
        else if (dwFlags&2)
                dwFlags1 |= 1;
        if (dwFlags & SFILE_OPEN_CD_ROM_FILE)
-               if (!(dwFlags1&2)) {*hMPQ = 0;return FALSE;}
+               if (!(dwFlags1&2)) {return FALSE;}
 #endif
 
        DWORD dwCreateFlags,dwAccessFlags,dwShareFlags;
@@ -326,7 +465,6 @@ BOOL WINAPI MpqOpenArchiveEx(LPCSTR lpFileName, DWORD dwPriority, DWORD dwFlags,
        if (dwFlags2 & MOAU_READ_ONLY) {
                if (!(dwFlags2 & MOAU_OPEN_EXISTING)) {
                        SetLastError(MPQ_ERROR_BAD_OPEN_MODE);
-                       *hMPQ = 0;
                        return FALSE;
                }
                dwAccessFlags = GENERIC_READ;
@@ -353,169 +491,71 @@ BOOL WINAPI MpqOpenArchiveEx(LPCSTR lpFileName, DWORD dwPriority, DWORD dwFlags,
        if (hFile!=INVALID_HANDLE_VALUE)
        {
                MPQARCHIVE **lpnOpenMpq = (MPQARCHIVE **)SFAlloc(sizeof(MPQARCHIVE *) * (dwOpenMpqCount+1));
-               if (lpnOpenMpq==0) {
+               if (!lpnOpenMpq) {
                        CloseHandle(hFile);
-                       *hMPQ = 0;
                        return FALSE;
                }
-               DWORD dwMpqStart;
                MPQARCHIVE *mpqOpenArc;
                if (SFGetFileSize(hFile)==0 && !(dwFlags2 & MOAU_READ_ONLY))
                {
-                       dwMpqStart = 0;
                        mpqOpenArc = (MPQARCHIVE *)SFAlloc(sizeof(MPQARCHIVE));
                        if (!mpqOpenArc) {
                                SFFree(lpnOpenMpq);
                                CloseHandle(hFile);
-                               *hMPQ = 0;
                                return FALSE;
                        }
-                       memcpy(&mpqOpenArc->MpqHeader.dwMPQID,ID_MPQ,4);
-                       mpqOpenArc->MpqHeader.dwHeaderSize = sizeof(MPQHEADER);
-                       mpqOpenArc->MpqHeader.wUnused0C = 0;
-                       if (dwBlockSize & 0xFFFF0000)
-                               mpqOpenArc->MpqHeader.wBlockSize = DEFAULT_BLOCK_SIZE;
-                       else
-                               mpqOpenArc->MpqHeader.wBlockSize = (WORD)dwBlockSize;
-                       DWORD i;
-                       for (i=1;i<dwMaximumFilesInArchive;i*=2) {}
-                       dwMaximumFilesInArchive = i;
+
+                       mpqOpenArc->hFile = hFile;
+                       mpqOpenArc->qwMPQStart = 0;
                        mpqOpenArc->MpqHeader.dwHashTableSize = dwMaximumFilesInArchive;
-                       mpqOpenArc->MpqHeader.dwBlockTableSize = 0;
-                       mpqOpenArc->MpqHeader.dwHashTableOffset = mpqOpenArc->MpqHeader.dwHeaderSize;
-                       mpqOpenArc->MpqHeader.dwBlockTableOffset = mpqOpenArc->MpqHeader.dwHeaderSize + mpqOpenArc->MpqHeader.dwHashTableSize * sizeof(HASHTABLEENTRY);
-                       mpqOpenArc->MpqHeader.dwMPQSize = mpqOpenArc->MpqHeader.dwHeaderSize + mpqOpenArc->MpqHeader.dwHashTableSize * sizeof(HASHTABLEENTRY);
-                       if(WriteFile(hFile,&mpqOpenArc->MpqHeader,mpqOpenArc->MpqHeader.dwHeaderSize,&tsz,0)==0) {
-                               SFFree(lpnOpenMpq);
-                               SFFree(mpqOpenArc);
-                               CloseHandle(hFile);
-                               *hMPQ = 0;
-                               return FALSE;
-                       }
-                       flen = mpqOpenArc->MpqHeader.dwMPQSize;
-                       mpqOpenArc->lpHashTable = (HASHTABLEENTRY *)SFAlloc(sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize);
-                       if(!mpqOpenArc->lpHashTable) {
-                               SFFree(lpnOpenMpq);
+                       mpqOpenArc->MpqHeader.wBlockSize = (WORD)dwBlockSize;
+
+                       if (!MpqWriteNewArchive(mpqOpenArc)) {
+                               if (mpqOpenArc->lpHashTable) SFFree(mpqOpenArc->lpHashTable);
                                SFFree(mpqOpenArc);
-                               CloseHandle(hFile);
-                               *hMPQ = 0;
-                               return FALSE;
-                       }
-                       memset(mpqOpenArc->lpHashTable,0xFF,sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize);
-                       EncryptData((LPBYTE)mpqOpenArc->lpHashTable,sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize,dwHashTableKey);
-                       if(WriteFile(hFile,mpqOpenArc->lpHashTable,sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize,&tsz,0)==0) {
-                               SFFree(mpqOpenArc->lpHashTable);
                                SFFree(lpnOpenMpq);
-                               SFFree(mpqOpenArc);
                                CloseHandle(hFile);
-                               *hMPQ = 0;
                                return FALSE;
                        }
                }
                else
                {
-                       dwMpqStart = SFileFindMpqHeader(hFile);
-                       if (dwMpqStart==0xFFFFFFFF) {
+                       UInt64 qwMpqStart = SFileFindMpqHeaderEx(hFile);
+                       if (qwMpqStart == (UInt64)-1) {
                                SFFree(lpnOpenMpq);
                                CloseHandle(hFile);
                                SetLastError(MPQ_ERROR_MPQ_INVALID);
-                               *hMPQ = 0;
                                return FALSE;
                        }
-                       flen = SFGetFileSize(hFile);
                        mpqOpenArc = (MPQARCHIVE *)SFAlloc(sizeof(MPQARCHIVE));
                        if (!mpqOpenArc) {
                                SFFree(lpnOpenMpq);
                                CloseHandle(hFile);
-                               *hMPQ = 0;
-                               return FALSE;
-                       }
-                       SFSetFilePointer(hFile,dwMpqStart,FILE_BEGIN);
-                       if(ReadFile(hFile,&mpqOpenArc->MpqHeader,sizeof(MPQHEADER),&tsz,0)==0) {
-                               SFFree(lpnOpenMpq);
-                               SFFree(mpqOpenArc);
-                               CloseHandle(hFile);
-                               *hMPQ = 0;
                                return FALSE;
                        }
-                       mpqOpenArc->lpHashTable = (HASHTABLEENTRY *)SFAlloc(sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize);
-                       if(!mpqOpenArc->lpHashTable) {
-                               SFFree(lpnOpenMpq);
+
+                       mpqOpenArc->hFile = hFile;
+                       mpqOpenArc->qwMPQStart = qwMpqStart;
+
+                       if (!MpqReadExistingArchive(mpqOpenArc)) {
+                               if (mpqOpenArc->lpBlockTable) SFFree(mpqOpenArc->lpBlockTable);
+                               if (mpqOpenArc->lpHashTable) SFFree(mpqOpenArc->lpHashTable);
                                SFFree(mpqOpenArc);
-                               CloseHandle(hFile);
-                               *hMPQ = 0;
-                               return FALSE;
-                       }
-                       if (mpqOpenArc->MpqHeader.dwBlockTableSize!=0) {
-                               mpqOpenArc->lpBlockTable = (BLOCKTABLEENTRY *)SFAlloc(sizeof(BLOCKTABLEENTRY) * mpqOpenArc->MpqHeader.dwBlockTableSize);
-                               if(!mpqOpenArc->lpBlockTable) {
-                                       SFFree(mpqOpenArc->lpHashTable);
-                                       SFFree(lpnOpenMpq);
-                                       SFFree(mpqOpenArc);
-                                       CloseHandle(hFile);
-                                       *hMPQ = 0;
-                                       return FALSE;
-                               }
-                       }
-                       SFSetFilePointer(hFile,dwMpqStart+mpqOpenArc->MpqHeader.dwHashTableOffset,FILE_BEGIN);
-                       if(ReadFile(hFile,mpqOpenArc->lpHashTable,sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize,&tsz,0)==0) {
-                               if(mpqOpenArc->lpBlockTable) SFFree(mpqOpenArc->lpBlockTable);
-                               SFFree(mpqOpenArc->lpHashTable);
                                SFFree(lpnOpenMpq);
-                               SFFree(mpqOpenArc);
                                CloseHandle(hFile);
-                               *hMPQ = 0;
                                return FALSE;
                        }
-                       if (mpqOpenArc->MpqHeader.dwBlockTableSize!=0) {
-                               SFSetFilePointer(hFile,dwMpqStart+mpqOpenArc->MpqHeader.dwBlockTableOffset,FILE_BEGIN);
-                               if(ReadFile(hFile,mpqOpenArc->lpBlockTable,sizeof(BLOCKTABLEENTRY) * mpqOpenArc->MpqHeader.dwBlockTableSize,&tsz,0)==0) {
-                                       SFFree(mpqOpenArc->lpBlockTable);
-                                       SFFree(mpqOpenArc->lpHashTable);
-                                       SFFree(lpnOpenMpq);
-                                       SFFree(mpqOpenArc);
-                                       CloseHandle(hFile);
-                                       *hMPQ = 0;
-                                       return FALSE;
-                               }
-                       }
                }
-               /*mpqOpenArc->lpFileName = (char *)SFAlloc(strlen(lpFileName)+1);
-               if(!mpqOpenArc->lpFileName) {
-                       if(mpqOpenArc->lpBlockTable) SFFree(mpqOpenArc->lpBlockTable);
+
+               if (!MpqOpenArchiveInit(mpqOpenArc, lpFileName, dwPriority, dwFlags1, dwFlags2, 0)) {
+                       if (mpqOpenArc->lpBlockTable) SFFree(mpqOpenArc->lpBlockTable);
                        SFFree(mpqOpenArc->lpHashTable);
-                       SFFree(lpnOpenMpq);
                        SFFree(mpqOpenArc);
+                       SFFree(lpnOpenMpq);
                        CloseHandle(hFile);
-                       *hMPQ = 0;
                        return FALSE;
-               }*/
-               DecryptData((LPBYTE)mpqOpenArc->lpHashTable,sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize,dwHashTableKey);
-               if (mpqOpenArc->lpBlockTable) DecryptData((LPBYTE)mpqOpenArc->lpBlockTable,sizeof(BLOCKTABLEENTRY) * mpqOpenArc->MpqHeader.dwBlockTableSize,dwBlockTableKey);
-               mpqOpenArc->lpFileName = mpqOpenArc->szFileName;
-               strncpy(mpqOpenArc->lpFileName,lpFileName,259);
-               if (FirstLastMpq[1]) FirstLastMpq[1]->lpNextArc = mpqOpenArc;
-               mpqOpenArc->lpNextArc = (MPQARCHIVE *)FirstLastMpq;
-               mpqOpenArc->lpPrevArc = (MPQARCHIVE *)FirstLastMpq[1];
-               if (!FirstLastMpq[0]) {
-                       mpqOpenArc->lpPrevArc = (MPQARCHIVE *)0xEAFC5E23;
-                       FirstLastMpq[0] = mpqOpenArc;
-               }
-               FirstLastMpq[1] = mpqOpenArc;
-               mpqOpenArc->hFile = hFile;
-               mpqOpenArc->dwFlags1 = dwFlags1;
-               mpqOpenArc->dwPriority = dwPriority;
-               mpqOpenArc->lpLastReadFile = 0;
-               mpqOpenArc->dwUnk = 0;
-               mpqOpenArc->dwBlockSize = 512 << mpqOpenArc->MpqHeader.wBlockSize;
-               mpqOpenArc->lpLastReadBlock = 0;
-               mpqOpenArc->dwBufferSize = 0;
-               mpqOpenArc->dwMPQStart = dwMpqStart;
-               mpqOpenArc->lpMPQHeader = &mpqOpenArc->MpqHeader;
-               mpqOpenArc->dwReadOffset = flen;
-               mpqOpenArc->dwRefCount = 1;
-               mpqOpenArc->dwFlags = dwFlags2;
-               mpqOpenArc->dwExtraFlags = 0;
+               }
+
                memcpy(lpnOpenMpq,lpOpenMpq,sizeof(MPQARCHIVE *) * dwOpenMpqCount);
                lpnOpenMpq[dwOpenMpqCount] = mpqOpenArc;
                if (lpOpenMpq) SFFree(lpOpenMpq);
@@ -523,6 +563,7 @@ BOOL WINAPI MpqOpenArchiveEx(LPCSTR lpFileName, DWORD dwPriority, DWORD dwFlags,
                dwOpenMpqCount++;
                if (dwOpenMpqCount>1) SortOpenArchivesByPriority();
                *hMPQ = (MPQHANDLE)mpqOpenArc;
+
                return TRUE;
        }
        else {
@@ -535,16 +576,14 @@ BOOL WINAPI MpqOpenArchiveEx(LPCSTR lpFileName, DWORD dwPriority, DWORD dwFlags,
 
 BOOL SFMPQAPI WINAPI SFileOpenFileAsArchive(MPQHANDLE hSourceMPQ, LPCSTR lpFileName, DWORD dwPriority, DWORD dwFlags, MPQHANDLE *hMPQ)
 {
-       DWORD flen,tsz;
-
        if (!lpFileName || !hMPQ) {
                SetLastError(ERROR_INVALID_PARAMETER);
-               if (hMPQ) *hMPQ = 0;
+               if (hMPQ) *hMPQ = (MPQHANDLE)INVALID_HANDLE_VALUE;
                return FALSE;
        }
+       *hMPQ = (MPQHANDLE)INVALID_HANDLE_VALUE;
        if (!*lpFileName) {
                SetLastError(ERROR_INVALID_PARAMETER);
-               *hMPQ = 0;
                return FALSE;
        }
 
@@ -559,105 +598,42 @@ BOOL SFMPQAPI WINAPI SFileOpenFileAsArchive(MPQHANDLE hSourceMPQ, LPCSTR lpFileN
                hFile = mpqArcFile.lpParentArc->hFile;
                MPQARCHIVE **lpnOpenMpq = (MPQARCHIVE **)SFAlloc(sizeof(MPQARCHIVE *) * (dwOpenMpqCount+1));
                if (!lpnOpenMpq) {
-                       *hMPQ = 0;
                        return FALSE;
                }
-               DWORD dwMpqStart;
                MPQARCHIVE *mpqOpenArc;
-               dwMpqStart = mpqArcFile.lpParentArc->dwMPQStart + mpqArcFile.lpBlockEntry->dwFileOffset;
-               flen = mpqArcFile.lpBlockEntry->dwFullSize;
-               dwMpqStart = FindMpqHeaderAtLocation(hFile,dwMpqStart,flen);
-               if (dwMpqStart==0xFFFFFFFF) {
+               UInt64 qwMpqStart = mpqArcFile.lpParentArc->qwMPQStart + MakeUInt64(mpqArcFile.lpBlockEntry->dwFileOffset, mpqArcFile.wFileOffsetHigh);
+               UInt64 flen = mpqArcFile.lpBlockEntry->dwFullSize;
+               qwMpqStart = SFileFindMpqHeaderEx(hFile, qwMpqStart, flen);
+               if (qwMpqStart == (UInt64)-1) {
                        SFFree(lpnOpenMpq);
                        SetLastError(MPQ_ERROR_MPQ_INVALID);
-                       *hMPQ = 0;
                        return FALSE;
                }
                mpqOpenArc = (MPQARCHIVE *)SFAlloc(sizeof(MPQARCHIVE));
                if (!mpqOpenArc) {
                        SFFree(lpnOpenMpq);
-                       *hMPQ = 0;
                        return FALSE;
                }
-               SFSetFilePointer(hFile,dwMpqStart,FILE_BEGIN);
-               if(ReadFile(hFile,&mpqOpenArc->MpqHeader,sizeof(MPQHEADER),&tsz,0)==0) {
-                       SFFree(lpnOpenMpq);
+
+               mpqOpenArc->hFile = hFile;
+               mpqOpenArc->qwMPQStart = qwMpqStart;
+
+               if (!MpqReadExistingArchive(mpqOpenArc)) {
+                       if (mpqOpenArc->lpBlockTable) SFFree(mpqOpenArc->lpBlockTable);
+                       if (mpqOpenArc->lpHashTable) SFFree(mpqOpenArc->lpHashTable);
                        SFFree(mpqOpenArc);
-                       *hMPQ = 0;
-                       return FALSE;
-               }
-               mpqOpenArc->lpHashTable = (HASHTABLEENTRY *)SFAlloc(sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize);
-               if(!mpqOpenArc->lpHashTable) {
                        SFFree(lpnOpenMpq);
-                       SFFree(mpqOpenArc);
-                       *hMPQ = 0;
                        return FALSE;
                }
-               if (mpqOpenArc->MpqHeader.dwBlockTableSize!=0) {
-                       mpqOpenArc->lpBlockTable = (BLOCKTABLEENTRY *)SFAlloc(sizeof(BLOCKTABLEENTRY) * mpqOpenArc->MpqHeader.dwBlockTableSize);
-                       if(!mpqOpenArc->lpBlockTable) {
-                               SFFree(mpqOpenArc->lpHashTable);
-                               SFFree(lpnOpenMpq);
-                               SFFree(mpqOpenArc);
-                               *hMPQ = 0;
-                               return FALSE;
-                       }
-               }
-               SFSetFilePointer(hFile,dwMpqStart+mpqOpenArc->MpqHeader.dwHashTableOffset,FILE_BEGIN);
-               if(ReadFile(hFile,mpqOpenArc->lpHashTable,sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize,&tsz,0)==0) {
-                       if(mpqOpenArc->lpBlockTable) SFFree(mpqOpenArc->lpBlockTable);
+
+               if (!MpqOpenArchiveInit(mpqOpenArc, lpFileName, dwPriority, 0, dwFlags, 1)) {
+                       if (mpqOpenArc->lpBlockTable) SFFree(mpqOpenArc->lpBlockTable);
                        SFFree(mpqOpenArc->lpHashTable);
-                       SFFree(lpnOpenMpq);
                        SFFree(mpqOpenArc);
-                       *hMPQ = 0;
-                       return FALSE;
-               }
-               if (mpqOpenArc->MpqHeader.dwBlockTableSize!=0) {
-                       SFSetFilePointer(hFile,dwMpqStart+mpqOpenArc->MpqHeader.dwBlockTableOffset,FILE_BEGIN);
-                       if(ReadFile(hFile,mpqOpenArc->lpBlockTable,sizeof(BLOCKTABLEENTRY) * mpqOpenArc->MpqHeader.dwBlockTableSize,&tsz,0)==0) {
-                               SFFree(mpqOpenArc->lpBlockTable);
-                               SFFree(mpqOpenArc->lpHashTable);
-                               SFFree(lpnOpenMpq);
-                               SFFree(mpqOpenArc);
-                               *hMPQ = 0;
-                               return FALSE;
-                       }
-               }
-               /*mpqOpenArc->lpFileName = (char *)SFAlloc(strlen(lpFileName)+1);
-               if(!mpqOpenArc->lpFileName) {
-                       if(mpqOpenArc->lpBlockTable) SFFree(mpqOpenArc->lpBlockTable);
-                       SFFree(mpqOpenArc->lpHashTable);
                        SFFree(lpnOpenMpq);
-                       SFFree(mpqOpenArc);
-                       *hMPQ = 0;
                        return FALSE;
-               }*/
-               DecryptData((LPBYTE)mpqOpenArc->lpHashTable,sizeof(HASHTABLEENTRY) * mpqOpenArc->MpqHeader.dwHashTableSize,dwHashTableKey);
-               if (mpqOpenArc->lpBlockTable) DecryptData((LPBYTE)mpqOpenArc->lpBlockTable,sizeof(BLOCKTABLEENTRY) * mpqOpenArc->MpqHeader.dwBlockTableSize,dwBlockTableKey);
-               mpqOpenArc->lpFileName = mpqOpenArc->szFileName;
-               strncpy(mpqOpenArc->lpFileName,lpFileName,259);
-               if (FirstLastMpq[1]) FirstLastMpq[1]->lpNextArc = mpqOpenArc;
-               mpqOpenArc->lpNextArc = (MPQARCHIVE *)FirstLastMpq;
-               mpqOpenArc->lpPrevArc = (MPQARCHIVE *)FirstLastMpq[1];
-               if (!FirstLastMpq[0]) {
-                       mpqOpenArc->lpPrevArc = (MPQARCHIVE *)0xEAFC5E23;
-                       FirstLastMpq[0] = mpqOpenArc;
-               }
-               FirstLastMpq[1] = mpqOpenArc;
-               mpqOpenArc->hFile = hFile;
-               mpqOpenArc->dwFlags1 = 0;
-               mpqOpenArc->dwPriority = dwPriority;
-               mpqOpenArc->lpLastReadFile = 0;
-               mpqOpenArc->dwUnk = 0;
-               mpqOpenArc->dwBlockSize = 512 << mpqOpenArc->MpqHeader.wBlockSize;
-               mpqOpenArc->lpLastReadBlock = 0;
-               mpqOpenArc->dwBufferSize = 0;
-               mpqOpenArc->dwMPQStart = dwMpqStart;
-               mpqOpenArc->lpMPQHeader = &mpqOpenArc->MpqHeader;
-               mpqOpenArc->dwReadOffset = flen;
-               mpqOpenArc->dwRefCount = 1;
-               mpqOpenArc->dwFlags = dwFlags;
-               mpqOpenArc->dwExtraFlags = 1;
+               }
+
                memcpy(lpnOpenMpq,lpOpenMpq,sizeof(MPQARCHIVE *) * dwOpenMpqCount);
                lpnOpenMpq[dwOpenMpqCount] = mpqOpenArc;
                if (lpOpenMpq) SFFree(lpOpenMpq);
@@ -665,6 +641,7 @@ BOOL SFMPQAPI WINAPI SFileOpenFileAsArchive(MPQHANDLE hSourceMPQ, LPCSTR lpFileN
                dwOpenMpqCount++;
                if (dwOpenMpqCount>1) SortOpenArchivesByPriority();
                *hMPQ = (MPQHANDLE)mpqOpenArc;
+
                return TRUE;
        }
        else {
@@ -908,6 +885,7 @@ BOOL SFMPQAPI WINAPI SFileOpenFileEx(MPQHANDLE hMPQ, LPCSTR lpFileName, DWORD dw
                mpqOpenFile->hFile = INVALID_HANDLE_VALUE;
                mpqOpenFile->lpHashEntry = (HASHTABLEENTRY *)hnFile;
                mpqOpenFile->lpBlockEntry = &((MPQARCHIVE *)hnMPQ)->lpBlockTable[mpqOpenFile->lpHashEntry->dwBlockTableIndex];
+               mpqOpenFile->wFileOffsetHigh = ((MPQARCHIVE *)hnMPQ)->lpFileOffsetsHigh[mpqOpenFile->lpHashEntry->dwBlockTableIndex];
                mpqOpenFile->lpParentArc->dwRefCount++;
                if (mpqOpenFile->lpBlockEntry->dwFlags&MAFA_ENCRYPT) {
                        LPSTR lpOldNameBuffer = mpqOpenFile->lpFileName;
@@ -1233,7 +1211,7 @@ BOOL SFMPQAPI WINAPI SFileReadFile(MPQHANDLE hFile,LPVOID lpBuffer,DWORD nNumber
        DWORD HeaderLength=0;
        if (memcmp(&mpqOpenArc->MpqHeader.dwMPQID,ID_BN3,4)==0)
        {
-               SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset,FILE_BEGIN);
+               SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[BlockIndex]), FILE_BEGIN);
                ReadFile(mpqOpenArc->hFile,&HeaderLength,4,&nBytesRead,0);
        }
        DWORD i;
@@ -1250,7 +1228,7 @@ BOOL SFMPQAPI WINAPI SFileReadFile(MPQHANDLE hFile,LPVOID lpBuffer,DWORD nNumber
                }
                if (((mpqOpenArc->lpBlockTable[BlockIndex].dwFlags & MAFA_COMPRESS) || (mpqOpenArc->lpBlockTable[BlockIndex].dwFlags & MAFA_COMPRESS2)) && !(mpqOpenArc->lpBlockTable[BlockIndex].dwFlags & MAFA_SINGLEBLOCK))
                {
-                       SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset+HeaderLength,FILE_BEGIN);
+                       SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[BlockIndex]) + HeaderLength, FILE_BEGIN);
                        ReadFile(mpqOpenArc->hFile,dwBlockPtrTable,(TotalBlocks+1)*4,&nBytesRead,0);
                        if (mpqOpenArc->lpBlockTable[BlockIndex].dwFlags & MAFA_ENCRYPT) {
                                DecryptData((LPBYTE)dwBlockPtrTable,(TotalBlocks+1)*4,dwCryptKey-1);
@@ -1279,7 +1257,7 @@ BOOL SFMPQAPI WINAPI SFileReadFile(MPQHANDLE hFile,LPVOID lpBuffer,DWORD nNumber
        DWORD blk=0,blki=0;
        for (i=blockNum;i<nBlocks;i++) {
                if (blk==0 && blkLargeBuffer) {
-                       SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset+HeaderLength+mpqOpenFile->lpdwBlockOffsets[i],FILE_BEGIN);
+                       SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[BlockIndex]) + HeaderLength + mpqOpenFile->lpdwBlockOffsets[i], FILE_BEGIN);
                        blki=i;
                        if (i+nBufferCount>nBlocks) {
                                if (ReadFile(mpqOpenArc->hFile,blkLargeBuffer,mpqOpenFile->lpdwBlockOffsets[nBlocks]-mpqOpenFile->lpdwBlockOffsets[i],&nBytesRead,0)==0) {
@@ -1307,7 +1285,7 @@ BOOL SFMPQAPI WINAPI SFileReadFile(MPQHANDLE hFile,LPVOID lpBuffer,DWORD nNumber
                        memcpy(blkBuffer,((char *)blkLargeBuffer)+(mpqOpenFile->lpdwBlockOffsets[blki+blk]-mpqOpenFile->lpdwBlockOffsets[blki]),mpqOpenFile->lpdwBlockOffsets[i+1]-mpqOpenFile->lpdwBlockOffsets[i]);
                }
                else {
-                       SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset+HeaderLength+mpqOpenFile->lpdwBlockOffsets[i],FILE_BEGIN);
+                       SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[BlockIndex]) + HeaderLength + mpqOpenFile->lpdwBlockOffsets[i], FILE_BEGIN);
                        blki=i;
                        if (ReadFile(mpqOpenArc->hFile,blkBuffer,mpqOpenFile->lpdwBlockOffsets[i+1]-mpqOpenFile->lpdwBlockOffsets[i],&nBytesRead,0)==0) {
                                if (compbuffer) SFFree(compbuffer);
@@ -1504,7 +1482,7 @@ BOOL SFMPQAPI WINAPI SFileListFiles(MPQHANDLE hMPQ, LPCSTR lpFileLists, FILELIST
                                        lpListBuffer[i].dwFileExists = 1;
                                else
                                        lpListBuffer[i].dwFileExists=0xFFFFFFFF;
-                               SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+mpqOpenArc->lpBlockTable[dwBlockIndex].dwFileOffset+0x40,FILE_BEGIN);
+                               SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[dwBlockIndex].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[dwBlockIndex]) + 0x40, FILE_BEGIN);
                                ReadFile(mpqOpenArc->hFile,lpListBuffer[i].szFileName,260,&tsz,0);
 
                                if (mpqOpenArc->lpHashTable[i].dwNameHashA==HashString(lpListBuffer[i].szFileName,HASH_NAME_A) && mpqOpenArc->lpHashTable[i].dwNameHashB==HashString(lpListBuffer[i].szFileName,HASH_NAME_B)) {
@@ -1941,15 +1919,19 @@ BOOL SFMPQAPI WINAPI MpqAddFileToArchiveEx(MPQHANDLE hMPQ, LPCSTR lpSourceFileNa
        if ((hashEntry->dwBlockTableIndex&0xFFFFFFFE)==0xFFFFFFFE)
        {
                BLOCKTABLEENTRY *lpnBlockTable;
-               lpnBlockTable = (BLOCKTABLEENTRY *)SFAlloc(sizeof(BLOCKTABLEENTRY) * (mpqOpenArc->MpqHeader.dwBlockTableSize + 1));
+               lpnBlockTable = (BLOCKTABLEENTRY *)SFAlloc((sizeof(BLOCKTABLEENTRY) + sizeof(UInt16)) * (mpqOpenArc->MpqHeader.dwBlockTableSize + 1));
                if(!lpnBlockTable) {
                        SFFree(buffer);
                        return FALSE;
                }
-               if (mpqOpenArc->lpBlockTable) memcpy(lpnBlockTable,mpqOpenArc->lpBlockTable,sizeof(BLOCKTABLEENTRY) * mpqOpenArc->MpqHeader.dwBlockTableSize);
+               if (mpqOpenArc->lpBlockTable) {
+                       memcpy(lpnBlockTable,mpqOpenArc->lpBlockTable,sizeof(BLOCKTABLEENTRY) * mpqOpenArc->MpqHeader.dwBlockTableSize);
+                       memcpy(lpnBlockTable + mpqOpenArc->MpqHeader.dwBlockTableSize + 1, mpqOpenArc->lpFileOffsetsHigh, sizeof(UInt16) * mpqOpenArc->MpqHeader.dwBlockTableSize);
+               }
                mpqOpenArc->MpqHeader.dwBlockTableSize++;
                if (mpqOpenArc->lpBlockTable) SFFree(mpqOpenArc->lpBlockTable);
                mpqOpenArc->lpBlockTable = lpnBlockTable;
+               mpqOpenArc->lpFileOffsetsHigh = (UInt16 *)(mpqOpenArc->lpBlockTable + mpqOpenArc->MpqHeader.dwBlockTableSize);
                IsNewBlockEntry = TRUE;
        }
        DWORD BlockIndex = mpqOpenArc->MpqHeader.dwBlockTableSize - 1;
@@ -2022,9 +2004,7 @@ BOOL SFMPQAPI WINAPI MpqAddFileToArchiveEx(MPQHANDLE hMPQ, LPCSTR lpSourceFileNa
        mpqOpenArc->lpBlockTable[BlockIndex].dwCompressedSize = fsz;
        mpqOpenArc->lpBlockTable[BlockIndex].dwFullSize = ucfsz;
        mpqOpenArc->lpBlockTable[BlockIndex].dwFlags = dwFlags|MAFA_EXISTS;
-       DWORD dwFileOffset = mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset;
-       SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart,FILE_BEGIN);
-       WriteFile(mpqOpenArc->hFile,&mpqOpenArc->MpqHeader,sizeof(MPQHEADER),&tsz,0);
+       MpqWriteHeaders(mpqOpenArc);
        if (dwFlags & MAFA_ENCRYPT) {
                DWORD dwCryptKey;
                if (dwFlags&MAFA_ENCRYPT) dwCryptKey = HashString(lpDestFileName,HASH_KEY);
@@ -2044,7 +2024,7 @@ BOOL SFMPQAPI WINAPI MpqAddFileToArchiveEx(MPQHANDLE hMPQ, LPCSTR lpSourceFileNa
                }
        }
        SFFree(dwBlkpt);
-       SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+dwFileOffset,FILE_BEGIN);
+       SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[BlockIndex]), FILE_BEGIN);
        WriteFile(mpqOpenArc->hFile,buffer,fsz,&tsz,0);
        SFFree(buffer);
        WriteHashTable(mpqOpenArc);
@@ -2261,15 +2241,19 @@ BOOL SFMPQAPI WINAPI MpqAddFileFromBufferEx(MPQHANDLE hMPQ, LPVOID lpBuffer, DWO
        if ((hashEntry->dwBlockTableIndex&0xFFFFFFFE)==0xFFFFFFFE)
        {
                BLOCKTABLEENTRY *lpnBlockTable;
-               lpnBlockTable = (BLOCKTABLEENTRY *)SFAlloc(sizeof(BLOCKTABLEENTRY) * (mpqOpenArc->MpqHeader.dwBlockTableSize + 1));
-               if(lpnBlockTable==0) {
+               lpnBlockTable = (BLOCKTABLEENTRY *)SFAlloc((sizeof(BLOCKTABLEENTRY) + sizeof(UInt16)) * (mpqOpenArc->MpqHeader.dwBlockTableSize + 1));
+               if(!lpnBlockTable) {
                        SFFree(buffer);
                        return FALSE;
                }
-               if (mpqOpenArc->lpBlockTable!=0) memcpy(lpnBlockTable,mpqOpenArc->lpBlockTable,sizeof(BLOCKTABLEENTRY) * mpqOpenArc->MpqHeader.dwBlockTableSize);
+               if (mpqOpenArc->lpBlockTable) {
+                       memcpy(lpnBlockTable,mpqOpenArc->lpBlockTable,sizeof(BLOCKTABLEENTRY) * mpqOpenArc->MpqHeader.dwBlockTableSize);
+                       memcpy(lpnBlockTable + mpqOpenArc->MpqHeader.dwBlockTableSize + 1, mpqOpenArc->lpFileOffsetsHigh, sizeof(UInt16) * mpqOpenArc->MpqHeader.dwBlockTableSize);
+               }
                mpqOpenArc->MpqHeader.dwBlockTableSize++;
-               if (mpqOpenArc->lpBlockTable!=0) SFFree(mpqOpenArc->lpBlockTable);
+               if (mpqOpenArc->lpBlockTable) SFFree(mpqOpenArc->lpBlockTable);
                mpqOpenArc->lpBlockTable = lpnBlockTable;
+               mpqOpenArc->lpFileOffsetsHigh = (UInt16 *)(mpqOpenArc->lpBlockTable + mpqOpenArc->MpqHeader.dwBlockTableSize);
                IsNewBlockEntry = TRUE;
        }
        DWORD BlockIndex = mpqOpenArc->MpqHeader.dwBlockTableSize - 1;
@@ -2341,9 +2325,7 @@ BOOL SFMPQAPI WINAPI MpqAddFileFromBufferEx(MPQHANDLE hMPQ, LPVOID lpBuffer, DWO
        mpqOpenArc->lpBlockTable[BlockIndex].dwCompressedSize = fsz;
        mpqOpenArc->lpBlockTable[BlockIndex].dwFullSize = ucfsz;
        mpqOpenArc->lpBlockTable[BlockIndex].dwFlags = dwFlags|MAFA_EXISTS;
-       DWORD dwFileOffset = mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset;
-       SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart,FILE_BEGIN);
-       WriteFile(mpqOpenArc->hFile,&mpqOpenArc->MpqHeader,sizeof(MPQHEADER),&tsz,0);
+       MpqWriteHeaders(mpqOpenArc);
        if (dwFlags & MAFA_ENCRYPT) {
                DWORD dwCryptKey;
                if (dwFlags&MAFA_ENCRYPT) dwCryptKey = HashString(lpFileName,HASH_KEY);
@@ -2364,7 +2346,7 @@ BOOL SFMPQAPI WINAPI MpqAddFileFromBufferEx(MPQHANDLE hMPQ, LPVOID lpBuffer, DWO
                }
        }
        SFFree(dwBlkpt);
-       SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+dwFileOffset,FILE_BEGIN);
+       SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[BlockIndex]), FILE_BEGIN);
        WriteFile(mpqOpenArc->hFile,buffer,fsz,&tsz,0);
        SFFree(buffer);
        WriteHashTable(mpqOpenArc);
@@ -2441,7 +2423,7 @@ BOOL SFMPQAPI WINAPI MpqRenameAndSetFileLocale(MPQHANDLE hMPQ, LPCSTR lpcOldFile
                        DWORD HeaderLength=0;
                        if (memcmp(&mpqOpenArc->MpqHeader.dwMPQID,ID_BN3,4)==0)
                        {
-                               SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset,FILE_BEGIN);
+                               SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[BlockIndex]), FILE_BEGIN);
                                ReadFile(mpqOpenArc->hFile,&HeaderLength,4,&tsz,0);
 
                        }
@@ -2456,7 +2438,7 @@ BOOL SFMPQAPI WINAPI MpqRenameAndSetFileLocale(MPQHANDLE hMPQ, LPCSTR lpcOldFile
                        DWORD i;
                        if ((mpqOpenArc->lpBlockTable[BlockIndex].dwFlags & MAFA_COMPRESS)==MAFA_COMPRESS || (mpqOpenArc->lpBlockTable[BlockIndex].dwFlags & MAFA_COMPRESS2)==MAFA_COMPRESS2)
                        {
-                               SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset+HeaderLength,FILE_BEGIN);
+                               SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[BlockIndex]) + HeaderLength, FILE_BEGIN);
                                ReadFile(mpqOpenArc->hFile,dwBlockPtrTable,(TotalBlocks+1)*4,&tsz,0);
                                DecryptData((LPBYTE)dwBlockPtrTable,(TotalBlocks+1)*4,dwOldCryptKey-1);
                                char *EncryptedTable = (char *)SFAlloc((TotalBlocks+1)*4);
@@ -2466,7 +2448,7 @@ BOOL SFMPQAPI WINAPI MpqRenameAndSetFileLocale(MPQHANDLE hMPQ, LPCSTR lpcOldFile
                                }
                                memcpy(EncryptedTable,dwBlockPtrTable,(TotalBlocks+1)*4);
                                EncryptData((LPBYTE)EncryptedTable,(TotalBlocks+1)*4,dwNewCryptKey-1);
-                               SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset+HeaderLength,FILE_BEGIN);
+                               SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[BlockIndex]) + HeaderLength, FILE_BEGIN);
                                WriteFile(mpqOpenArc->hFile,EncryptedTable,(TotalBlocks+1)*4,&tsz,0);
                                SFFree(EncryptedTable);
                        }
@@ -2480,16 +2462,16 @@ BOOL SFMPQAPI WINAPI MpqRenameAndSetFileLocale(MPQHANDLE hMPQ, LPCSTR lpcOldFile
                        char *blkBuffer = (char *)SFAlloc(blockSize);
                        if (blkBuffer==0) {
                                EncryptData((LPBYTE)dwBlockPtrTable,(TotalBlocks+1)*4,dwOldCryptKey-1);
-                               SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset+HeaderLength,FILE_BEGIN);
+                               SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[BlockIndex]) + HeaderLength, FILE_BEGIN);
                                WriteFile(mpqOpenArc->hFile,dwBlockPtrTable,(TotalBlocks+1)*4,&tsz,0);
                                SFFree(dwBlockPtrTable);
                                return FALSE;
                        }
                        for (i=0;i<TotalBlocks;i++) {
-                               SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset+HeaderLength+dwBlockPtrTable[i],FILE_BEGIN);
+                               SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[BlockIndex]) + HeaderLength + dwBlockPtrTable[i], FILE_BEGIN);
                                if (ReadFile(mpqOpenArc->hFile,blkBuffer,dwBlockPtrTable[i+1]-dwBlockPtrTable[i],&tsz,0)==0) {
                                        EncryptData((LPBYTE)dwBlockPtrTable,(TotalBlocks+1)*4,dwOldCryptKey-1);
-                                       SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset+HeaderLength,FILE_BEGIN);
+                                       SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[BlockIndex]) + HeaderLength, FILE_BEGIN);
                                        WriteFile(mpqOpenArc->hFile,dwBlockPtrTable,(TotalBlocks+1)*4,&tsz,0);
                                        SFFree(dwBlockPtrTable);
                                        SFFree(blkBuffer);
@@ -2497,7 +2479,7 @@ BOOL SFMPQAPI WINAPI MpqRenameAndSetFileLocale(MPQHANDLE hMPQ, LPCSTR lpcOldFile
                                }
                                DecryptData((LPBYTE)blkBuffer,dwBlockPtrTable[i+1]-dwBlockPtrTable[i],dwOldCryptKey+i);
                                EncryptData((LPBYTE)blkBuffer,dwBlockPtrTable[i+1]-dwBlockPtrTable[i],dwNewCryptKey+i);
-                               SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset+HeaderLength+dwBlockPtrTable[i],FILE_BEGIN);
+                               SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[BlockIndex].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[BlockIndex]) + HeaderLength + dwBlockPtrTable[i], FILE_BEGIN);
                                WriteFile(mpqOpenArc->hFile,blkBuffer,dwBlockPtrTable[i+1]-dwBlockPtrTable[i],&tsz,0);
                        }
                        SFFree(dwBlockPtrTable);
@@ -2573,7 +2555,7 @@ BOOL SFMPQAPI WINAPI MpqCompactArchive(MPQHANDLE hMPQ)
        char *lpFileName = (char *)NewAlloc.Alloc(strlen(mpqOpenArc->lpFileName)+13);
        sprintf(lpFileName,"%s.compact",mpqOpenArc->lpFileName);
        HANDLE hFile = CreateFile(lpFileName,GENERIC_READ|GENERIC_WRITE,0,0,CREATE_NEW,0,0);
-       DWORD i;
+       UInt64 i;
        if (hFile==INVALID_HANDLE_VALUE) {
                for (i=0;i<10000;i++) {
                        sprintf(lpFileName,"%s.compact.%04ld",mpqOpenArc->lpFileName,i);
@@ -2583,7 +2565,8 @@ BOOL SFMPQAPI WINAPI MpqCompactArchive(MPQHANDLE hMPQ)
                }
                if (i==10000) return FALSE;
        }
-       DWORD dwLastOffset = sizeof(MPQHEADER),tsz;
+       UInt64 qwLastOffset = mpqOpenArc->dwHeaderSize;
+       DWORD tsz;
        char *buffer = (char *)SFAlloc(65536);
        if (buffer==0) {
                CloseHandle(hFile);
@@ -2597,7 +2580,8 @@ BOOL SFMPQAPI WINAPI MpqCompactArchive(MPQHANDLE hMPQ)
                DeleteFile(lpFileName);
                return FALSE;
        }
-       BLOCKTABLEENTRY *lpBlockTable = (BLOCKTABLEENTRY *)SFAlloc(sizeof(BLOCKTABLEENTRY) * mpqOpenArc->MpqHeader.dwBlockTableSize);
+       BLOCKTABLEENTRY *lpBlockTable = (BLOCKTABLEENTRY *)SFAlloc((sizeof(BLOCKTABLEENTRY) + sizeof(UInt16)) * mpqOpenArc->MpqHeader.dwBlockTableSize);
+       UInt16 *lpdwFileOffsetsHigh = (UInt16 *)(lpBlockTable + mpqOpenArc->MpqHeader.dwBlockTableSize);
        if(mpqOpenArc->lpBlockTable!=0) {
                if (lpBlockTable==0) {
                        SFFree(lpHashTable);
@@ -2616,15 +2600,15 @@ BOOL SFMPQAPI WINAPI MpqCompactArchive(MPQHANDLE hMPQ)
                }
                if (j<mpqOpenArc->MpqHeader.dwHashTableSize) {
                        memcpy(&lpBlockTable[i-nBlkOffset],&mpqOpenArc->lpBlockTable[i],sizeof(BLOCKTABLEENTRY));
-                       lpBlockTable[i-nBlkOffset].dwFileOffset = dwLastOffset;
-                       dwLastOffset += mpqOpenArc->lpBlockTable[i].dwCompressedSize;
+                       SplitUInt64(lpBlockTable[i-nBlkOffset].dwFileOffset, lpdwFileOffsetsHigh[i-nBlkOffset], qwLastOffset);
+                       qwLastOffset += mpqOpenArc->lpBlockTable[i].dwCompressedSize;
                        DWORD dwWritten=FALSE;
                        if (mpqOpenArc->lpBlockTable[i].dwFlags&MAFA_ENCRYPT && mpqOpenArc->lpBlockTable[i].dwFlags&MAFA_MODCRYPTKEY && (mpqOpenArc->lpBlockTable[i].dwFlags&MAFA_COMPRESS || mpqOpenArc->lpBlockTable[i].dwFlags&MAFA_COMPRESS2))
                        {
                                DWORD HeaderLength=0;
                                if (memcmp(&mpqOpenArc->MpqHeader.dwMPQID,ID_BN3,4)==0)
                                {
-                                       SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+mpqOpenArc->lpBlockTable[i].dwFileOffset,FILE_BEGIN);
+                                       SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[i].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[i]), FILE_BEGIN);
                                        ReadFile(mpqOpenArc->hFile,&HeaderLength,4,&tsz,0);
                                }
                                DWORD blockSize = 512 << mpqOpenArc->MpqHeader.wBlockSize;
@@ -2640,7 +2624,7 @@ BOOL SFMPQAPI WINAPI MpqCompactArchive(MPQHANDLE hMPQ)
                                        DeleteFile(lpFileName);
                                        return FALSE;
                                }
-                               SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+mpqOpenArc->lpBlockTable[i].dwFileOffset+HeaderLength,FILE_BEGIN);
+                               SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[i].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[i]) + HeaderLength, FILE_BEGIN);
                                ReadFile(mpqOpenArc->hFile,dwBlockPtrTable,(TotalBlocks+1)*4,&tsz,0);
                                DWORD dwOldCryptKey = DetectFileSeed(dwBlockPtrTable,(TotalBlocks+1)*4,blockSize);
                                DWORD dwNewCryptKey = (dwOldCryptKey ^ mpqOpenArc->lpBlockTable[i].dwFullSize) - mpqOpenArc->lpBlockTable[i].dwFileOffset;
@@ -2726,7 +2710,7 @@ BOOL SFMPQAPI WINAPI MpqCompactArchive(MPQHANDLE hMPQ)
                                        }
                                        memcpy(EncryptedTable,dwBlockPtrTable,(TotalBlocks+1)*4);
                                        EncryptData((LPBYTE)EncryptedTable,(TotalBlocks+1)*4,dwNewCryptKey-1);
-                                       SFSetFilePointer(hFile,lpBlockTable[i-nBlkOffset].dwFileOffset+HeaderLength,FILE_BEGIN);
+                                       SFSetFilePointer(hFile, MakeUInt64(lpBlockTable[i-nBlkOffset].dwFileOffset, lpdwFileOffsetsHigh[i-nBlkOffset]) + HeaderLength, FILE_BEGIN);
                                        WriteFile(hFile,EncryptedTable,(TotalBlocks+1)*4,&tsz,0);
                                        SFFree(EncryptedTable);
                                        char *blkBuffer = (char *)SFAlloc(blockSize);
@@ -2740,7 +2724,7 @@ BOOL SFMPQAPI WINAPI MpqCompactArchive(MPQHANDLE hMPQ)
                                                return FALSE;
                                        }
                                        for (DWORD k=0;k<TotalBlocks;k++) {
-                                               SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+mpqOpenArc->lpBlockTable[i].dwFileOffset+HeaderLength+dwBlockPtrTable[k],FILE_BEGIN);
+                                               SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[i].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[i]) + HeaderLength + dwBlockPtrTable[k], FILE_BEGIN);
                                                if (ReadFile(mpqOpenArc->hFile,blkBuffer,dwBlockPtrTable[k+1]-dwBlockPtrTable[k],&tsz,0)==0) {
                                                        SFFree(dwBlockPtrTable);
                                                        SFFree(blkBuffer);
@@ -2753,7 +2737,7 @@ BOOL SFMPQAPI WINAPI MpqCompactArchive(MPQHANDLE hMPQ)
                                                }
                                                DecryptData((LPBYTE)blkBuffer,dwBlockPtrTable[k+1]-dwBlockPtrTable[k],dwOldCryptKey+k);
                                                EncryptData((LPBYTE)blkBuffer,dwBlockPtrTable[k+1]-dwBlockPtrTable[k],dwNewCryptKey+k);
-                                               SFSetFilePointer(hFile,lpBlockTable[i-nBlkOffset].dwFileOffset+HeaderLength+dwBlockPtrTable[k],FILE_BEGIN);
+                                               SFSetFilePointer(hFile, MakeUInt64(lpBlockTable[i-nBlkOffset].dwFileOffset, lpdwFileOffsetsHigh[i-nBlkOffset]) + HeaderLength + dwBlockPtrTable[k], FILE_BEGIN);
                                                WriteFile(hFile,blkBuffer,dwBlockPtrTable[k+1]-dwBlockPtrTable[k],&tsz,0);
                                        }
                                        SFFree(blkBuffer);
@@ -2767,7 +2751,7 @@ BOOL SFMPQAPI WINAPI MpqCompactArchive(MPQHANDLE hMPQ)
                                if (memcmp(&mpqOpenArc->MpqHeader.dwMPQID,ID_BN3,4)==0)
 
                                {
-                                       SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+mpqOpenArc->lpBlockTable[i].dwFileOffset,FILE_BEGIN);
+                                       SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[i].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[i]), FILE_BEGIN);
                                        ReadFile(mpqOpenArc->hFile,&HeaderLength,4,&tsz,0);
                                }
                                DWORD blockSize = 512 << mpqOpenArc->MpqHeader.wBlockSize;
@@ -2852,7 +2836,7 @@ BOOL SFMPQAPI WINAPI MpqCompactArchive(MPQHANDLE hMPQ)
                                                return FALSE;
                                        }
                                        for (DWORD k=0;k<mpqOpenArc->lpBlockTable[i].dwFullSize;k+=blockSize) {
-                                               SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+mpqOpenArc->lpBlockTable[i].dwFileOffset+HeaderLength+k,FILE_BEGIN);
+                                               SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[i].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[i]) + HeaderLength + k, FILE_BEGIN);
                                                if (k+blockSize>mpqOpenArc->lpBlockTable[i].dwFullSize) blockSize = mpqOpenArc->lpBlockTable[i].dwFullSize % blockSize;
                                                if (ReadFile(mpqOpenArc->hFile,blkBuffer,blockSize,&tsz,0)==0) {
                                                        SFFree(blkBuffer);
@@ -2866,7 +2850,7 @@ BOOL SFMPQAPI WINAPI MpqCompactArchive(MPQHANDLE hMPQ)
                                                }
                                                DecryptData((LPBYTE)blkBuffer,blockSize,dwOldCryptKey+k);
                                                EncryptData((LPBYTE)blkBuffer,blockSize,dwNewCryptKey+k);
-                                               SFSetFilePointer(hFile,lpBlockTable[i-nBlkOffset].dwFileOffset+HeaderLength+k,FILE_BEGIN);
+                                               SFSetFilePointer(hFile, MakeUInt64(lpBlockTable[i-nBlkOffset].dwFileOffset, lpdwFileOffsetsHigh[i-nBlkOffset]) + HeaderLength + k, FILE_BEGIN);
                                                WriteFile(hFile,blkBuffer,blockSize,&tsz,0);
                                        }
                                        SFFree(blkBuffer);
@@ -2876,8 +2860,8 @@ BOOL SFMPQAPI WINAPI MpqCompactArchive(MPQHANDLE hMPQ)
                        if (dwWritten==FALSE) {
                                ReadSize = 65536;
                                for (j=0;j<mpqOpenArc->lpBlockTable[i].dwCompressedSize;j+=65536) {
-                                       SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+mpqOpenArc->lpBlockTable[i].dwFileOffset+j,FILE_BEGIN);
-                                       SFSetFilePointer(hFile,lpBlockTable[i-nBlkOffset].dwFileOffset+j,FILE_BEGIN);
+                                       SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[i].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[i]) + j, FILE_BEGIN);
+                                       SFSetFilePointer(hFile, MakeUInt64(lpBlockTable[i-nBlkOffset].dwFileOffset, lpdwFileOffsetsHigh[i-nBlkOffset]) + j, FILE_BEGIN);
                                        if (j+65536>mpqOpenArc->lpBlockTable[i].dwCompressedSize) ReadSize = mpqOpenArc->lpBlockTable[i].dwCompressedSize-j;
                                        if (ReadFile(mpqOpenArc->hFile,buffer,ReadSize,&tsz,0)==0) {
                                                SFFree(lpBlockTable);
@@ -2907,35 +2891,40 @@ BOOL SFMPQAPI WINAPI MpqCompactArchive(MPQHANDLE hMPQ)
                }
        }
        mpqOpenArc->MpqHeader.dwBlockTableSize -= nBlkOffset;
-       mpqOpenArc->MpqHeader.dwHashTableOffset = dwLastOffset;
-       dwLastOffset += mpqOpenArc->MpqHeader.dwHashTableSize * sizeof(HASHTABLEENTRY);
-       mpqOpenArc->MpqHeader.dwBlockTableOffset = dwLastOffset;
-       dwLastOffset += mpqOpenArc->MpqHeader.dwBlockTableSize * sizeof(BLOCKTABLEENTRY);
-       mpqOpenArc->MpqHeader.dwMPQSize = dwLastOffset;
+       SplitUInt64(mpqOpenArc->MpqHeader.dwHashTableOffset, mpqOpenArc->MpqHeader_Ex.wHashTableOffsetHigh, qwLastOffset);
+       qwLastOffset += mpqOpenArc->MpqHeader.dwHashTableSize * sizeof(HASHTABLEENTRY);
+       SplitUInt64(mpqOpenArc->MpqHeader.dwBlockTableOffset, mpqOpenArc->MpqHeader_Ex.wBlockTableOffsetHigh, qwLastOffset);
+       qwLastOffset += mpqOpenArc->MpqHeader.dwBlockTableSize * sizeof(BLOCKTABLEENTRY);
+       if (mpqOpenArc->MpqHeader_Ex.qwExtendedBlockOffsetTable) {
+               mpqOpenArc->MpqHeader_Ex.qwExtendedBlockOffsetTable = qwLastOffset;
+               qwLastOffset += mpqOpenArc->MpqHeader.dwBlockTableSize * sizeof(UInt16);
+       }
+       mpqOpenArc->MpqHeader.dwMPQSize = (UInt32)qwLastOffset;
        SFFree(mpqOpenArc->lpHashTable);
        mpqOpenArc->lpHashTable = lpHashTable;
        if(mpqOpenArc->lpBlockTable!=0) {
                SFFree(mpqOpenArc->lpBlockTable);
-               mpqOpenArc->lpBlockTable = (BLOCKTABLEENTRY *)SFAlloc(mpqOpenArc->MpqHeader.dwBlockTableSize * sizeof(BLOCKTABLEENTRY));
+               mpqOpenArc->lpBlockTable = (BLOCKTABLEENTRY *)SFAlloc(mpqOpenArc->MpqHeader.dwBlockTableSize * (sizeof(BLOCKTABLEENTRY) + sizeof(UInt16)));
+               mpqOpenArc->lpFileOffsetsHigh = (UInt16 *)(mpqOpenArc->lpBlockTable + mpqOpenArc->MpqHeader.dwBlockTableSize);
                if (mpqOpenArc->lpBlockTable==0) {
                        mpqOpenArc->lpBlockTable = lpBlockTable;
+                       mpqOpenArc->lpFileOffsetsHigh = lpdwFileOffsetsHigh;
                }
                else {
-                       memcpy(mpqOpenArc->lpBlockTable,lpBlockTable,mpqOpenArc->MpqHeader.dwBlockTableSize * sizeof(BLOCKTABLEENTRY));
+                       memcpy(mpqOpenArc->lpBlockTable, lpBlockTable, mpqOpenArc->MpqHeader.dwBlockTableSize * (sizeof(BLOCKTABLEENTRY) + sizeof(UInt16)));
                        SFFree(lpBlockTable);
                }
        }
-       SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+dwLastOffset,FILE_BEGIN);
+       SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + qwLastOffset, FILE_BEGIN);
        SetEndOfFile(mpqOpenArc->hFile);
-       SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart,FILE_BEGIN);
-       mpqOpenArc->MpqHeader.dwHeaderSize = sizeof(MPQHEADER);
-       WriteFile(mpqOpenArc->hFile,&mpqOpenArc->MpqHeader,sizeof(MPQHEADER),&tsz,0);
-       dwLastOffset = sizeof(MPQHEADER);
+       MpqWriteHeaders(mpqOpenArc);
+       mpqOpenArc->MpqHeader.dwHeaderSize = mpqOpenArc->dwHeaderSize;
+       qwLastOffset = mpqOpenArc->dwHeaderSize;
        ReadSize = 65536;
-       for (i=dwLastOffset;i<mpqOpenArc->MpqHeader.dwHashTableOffset;i+=65536) {
-               SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+i,FILE_BEGIN);
+       for (i=qwLastOffset;i<MakeUInt64(mpqOpenArc->MpqHeader.dwHashTableOffset, mpqOpenArc->MpqHeader_Ex.wHashTableOffsetHigh);i+=65536) {
+               SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->qwMPQStart+i,FILE_BEGIN);
                SFSetFilePointer(hFile,i,FILE_BEGIN);
-               if (i+65536>mpqOpenArc->MpqHeader.dwHashTableOffset) ReadSize = mpqOpenArc->MpqHeader.dwHashTableOffset-i;
+               if (i+65536>MakeUInt64(mpqOpenArc->MpqHeader.dwHashTableOffset, mpqOpenArc->MpqHeader_Ex.wHashTableOffsetHigh)) ReadSize = MakeUInt64(mpqOpenArc->MpqHeader.dwHashTableOffset, mpqOpenArc->MpqHeader_Ex.wHashTableOffsetHigh)-i;
                ReadFile(hFile,buffer,ReadSize,&tsz,0);
                WriteFile(mpqOpenArc->hFile,buffer,ReadSize,&tsz,0);
        }
@@ -2976,13 +2965,37 @@ BOOL SFMPQAPI WINAPI MpqSetFileLocale(MPQHANDLE hMPQ, LPCSTR lpFileName, LCID nO
        return TRUE;
 }
 
+BOOL SFMPQAPI WINAPI MpqCreateArchiveVersion(WORD wVersion)
+{
+       if (wVersion > 1) return FALSE;
+
+       wCreationVersion = wVersion;
+       return TRUE;
+}
+
 DWORD SFMPQAPI WINAPI SFileFindMpqHeader(HANDLE hFile)
 {
        if (hFile == INVALID_HANDLE_VALUE) {
                SetLastError(ERROR_INVALID_PARAMETER);
                return 0xFFFFFFFF;
        }
-       DWORD FileLen = SFGetFileSize(hFile);
+
+       DWORD dwHandleType = GetHandleType((MPQHANDLE)hFile);
+       if (dwHandleType == SFILE_TYPE_FILE) {
+               MPQFILE *mpqOpenFile = (MPQFILE *)hFile;
+               if (mpqOpenFile->hFile == INVALID_HANDLE_VALUE) {
+                       return mpqOpenFile->lpParentArc->qwMPQStart;
+               }
+               else {
+                       hFile = mpqOpenFile->hFile;
+               }
+       }
+       else if (dwHandleType == SFILE_TYPE_MPQ) {
+               return ((MPQARCHIVE *)hFile)->qwMPQStart;
+       }
+
+       UInt64 FileLen = SFGetFileSize(hFile);
+       if (FileLen >= 0xFFFFFFFF) FileLen = 0xFFFFFFFE;
        char pbuf[sizeof(MPQHEADER)];
        DWORD tsz;
        for (DWORD i=0;i<FileLen;i+=512)
@@ -3004,20 +3017,23 @@ DWORD SFMPQAPI WINAPI SFileFindMpqHeader(HANDLE hFile)
        return 0xFFFFFFFF;
 }
 
-DWORD WINAPI FindMpqHeaderAtLocation(HANDLE hFile, DWORD dwStart, DWORD dwLength)
+UInt64 WINAPI SFileFindMpqHeaderEx(HANDLE hFile, UInt64 qwStart, UInt64 qwLength)
 {
        if (hFile == INVALID_HANDLE_VALUE) {
                SetLastError(ERROR_INVALID_PARAMETER);
-               return 0xFFFFFFFF;
+               return (UInt64)-1;
        }
+       UInt64 FileLen = SFGetFileSize(hFile);
+       if (FileLen == (UInt64)-1 || qwStart >= FileLen || qwStart + qwLength > FileLen) return (UInt64)-1;
+       if (qwLength == 0) qwLength = FileLen - qwStart;
        char pbuf[sizeof(MPQHEADER)];
        DWORD tsz;
-       for (DWORD i=dwStart;i<dwStart+dwLength;i+=512)
+       for (UInt64 i=qwStart;i<qwStart+qwLength && i<FileLen;i+=512)
        {
                SFSetFilePointer(hFile,i,FILE_BEGIN);
-               if (ReadFile(hFile,pbuf,sizeof(MPQHEADER),&tsz,0)==0) return 0xFFFFFFFF;
-               if (i+tsz>dwStart+dwLength) tsz = (dwStart+dwLength)-i;
-               if (tsz<sizeof(MPQHEADER)) return 0xFFFFFFFF;
+               if (ReadFile(hFile,pbuf,sizeof(MPQHEADER),&tsz,0)==0) return (UInt64)-1;
+               if (i+tsz>qwStart+qwLength) tsz = (qwStart+qwLength)-i;
+               if (tsz<sizeof(MPQHEADER)) return (UInt64)-1;
                if (memcmp(pbuf,ID_MPQ,4)==0 || memcmp(pbuf,ID_BN3,4)==0)
                {
                        // Storm no longer does this, so mpq api shouldn't either
@@ -3029,7 +3045,7 @@ DWORD WINAPI FindMpqHeaderAtLocation(HANDLE hFile, DWORD dwStart, DWORD dwLength
                        return i;
                }
        }
-       return 0xFFFFFFFF;
+       return (UInt64)-1;
 }
 
 DWORD GetFullPath(LPCSTR lpFileName, char *lpBuffer, DWORD dwBufferLength)
@@ -3463,7 +3479,7 @@ DWORD DetectFileSeedEx(MPQARCHIVE * mpqOpenArc, HASHTABLEENTRY * lpHashEntry, LP
                        DWORD HeaderLength=0,tsz;
                        if (memcmp(&mpqOpenArc->MpqHeader.dwMPQID,ID_BN3,4)==0)
                        {
-                               SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+mpqOpenArc->lpBlockTable[dwBlockIndex].dwFileOffset,FILE_BEGIN);
+                               SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[dwBlockIndex].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[dwBlockIndex]), FILE_BEGIN);
                                ReadFile(mpqOpenArc->hFile,&HeaderLength,4,&tsz,0);
                        }
                        DWORD blockSize = 512 << mpqOpenArc->MpqHeader.wBlockSize;
@@ -3473,7 +3489,7 @@ DWORD DetectFileSeedEx(MPQARCHIVE * mpqOpenArc, HASHTABLEENTRY * lpHashEntry, LP
                        DWORD *dwBlockPtrTable = (DWORD *)SFAlloc((TotalBlocks+1)*4);
                        if (dwBlockPtrTable==0)
                                return 0;
-                       SFSetFilePointer(mpqOpenArc->hFile,mpqOpenArc->dwMPQStart+mpqOpenArc->lpBlockTable[dwBlockIndex].dwFileOffset+HeaderLength,FILE_BEGIN);
+                       SFSetFilePointer(mpqOpenArc->hFile, mpqOpenArc->qwMPQStart + MakeUInt64(mpqOpenArc->lpBlockTable[dwBlockIndex].dwFileOffset, mpqOpenArc->lpFileOffsetsHigh[dwBlockIndex]) + HeaderLength, FILE_BEGIN);
                        ReadFile(mpqOpenArc->hFile,dwBlockPtrTable,(TotalBlocks+1)*4,&tsz,0);
                        dwCryptKey = DetectFileSeed(dwBlockPtrTable,(TotalBlocks+1)*4,blockSize);