mirror of
https://github.com/alliedmodders/hl2sdk.git
synced 2024-12-22 09:38:56 +08:00
1838 lines
54 KiB
C++
1838 lines
54 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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//=============================================================================//
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// If we are going to include windows.h then we need to disable protected_things.h
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// or else we get many warnings.
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#undef PROTECTED_THINGS_ENABLE
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#include <tier0/platform.h>
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#ifdef IS_WINDOWS_PC
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#include <windows.h>
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#else
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#define INVALID_HANDLE_VALUE (void *)0
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#define FILE_BEGIN SEEK_SET
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#define FILE_END SEEK_END
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#endif
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#include "utlbuffer.h"
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#include "utllinkedlist.h"
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#include "zip_utils.h"
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#include "zip_uncompressed.h"
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#include "checksum_crc.h"
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#include "byteswap.h"
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#include "utlstring.h"
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#include "tier1/lzmaDecoder.h"
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// Not every user of zip utils wants to link LZMA encoder
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#ifdef ZIP_SUPPORT_LZMA_ENCODE
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#include "lzma/lzma.h"
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#endif
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// Data descriptions for byte swapping - only needed
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// for structures that are written to file for use by the game.
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BEGIN_BYTESWAP_DATADESC( ZIP_EndOfCentralDirRecord )
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DEFINE_FIELD( signature, FIELD_INTEGER ),
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DEFINE_FIELD( numberOfThisDisk, FIELD_SHORT ),
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DEFINE_FIELD( numberOfTheDiskWithStartOfCentralDirectory, FIELD_SHORT ),
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DEFINE_FIELD( nCentralDirectoryEntries_ThisDisk, FIELD_SHORT ),
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DEFINE_FIELD( nCentralDirectoryEntries_Total, FIELD_SHORT ),
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DEFINE_FIELD( centralDirectorySize, FIELD_INTEGER ),
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DEFINE_FIELD( startOfCentralDirOffset, FIELD_INTEGER ),
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DEFINE_FIELD( commentLength, FIELD_SHORT ),
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END_BYTESWAP_DATADESC()
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BEGIN_BYTESWAP_DATADESC( ZIP_FileHeader )
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DEFINE_FIELD( signature, FIELD_INTEGER ),
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DEFINE_FIELD( versionMadeBy, FIELD_SHORT ),
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DEFINE_FIELD( versionNeededToExtract, FIELD_SHORT ),
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DEFINE_FIELD( flags, FIELD_SHORT ),
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DEFINE_FIELD( compressionMethod, FIELD_SHORT ),
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DEFINE_FIELD( lastModifiedTime, FIELD_SHORT ),
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DEFINE_FIELD( lastModifiedDate, FIELD_SHORT ),
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DEFINE_FIELD( crc32, FIELD_INTEGER ),
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DEFINE_FIELD( compressedSize, FIELD_INTEGER ),
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DEFINE_FIELD( uncompressedSize, FIELD_INTEGER ),
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DEFINE_FIELD( fileNameLength, FIELD_SHORT ),
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DEFINE_FIELD( extraFieldLength, FIELD_SHORT ),
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DEFINE_FIELD( fileCommentLength, FIELD_SHORT ),
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DEFINE_FIELD( diskNumberStart, FIELD_SHORT ),
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DEFINE_FIELD( internalFileAttribs, FIELD_SHORT ),
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DEFINE_FIELD( externalFileAttribs, FIELD_INTEGER ),
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DEFINE_FIELD( relativeOffsetOfLocalHeader, FIELD_INTEGER ),
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END_BYTESWAP_DATADESC()
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BEGIN_BYTESWAP_DATADESC( ZIP_LocalFileHeader )
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DEFINE_FIELD( signature, FIELD_INTEGER ),
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DEFINE_FIELD( versionNeededToExtract, FIELD_SHORT ),
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DEFINE_FIELD( flags, FIELD_SHORT ),
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DEFINE_FIELD( compressionMethod, FIELD_SHORT ),
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DEFINE_FIELD( lastModifiedTime, FIELD_SHORT ),
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DEFINE_FIELD( lastModifiedDate, FIELD_SHORT ),
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DEFINE_FIELD( crc32, FIELD_INTEGER ),
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DEFINE_FIELD( compressedSize, FIELD_INTEGER ),
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DEFINE_FIELD( uncompressedSize, FIELD_INTEGER ),
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DEFINE_FIELD( fileNameLength, FIELD_SHORT ),
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DEFINE_FIELD( extraFieldLength, FIELD_SHORT ),
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END_BYTESWAP_DATADESC()
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BEGIN_BYTESWAP_DATADESC( ZIP_PreloadHeader )
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DEFINE_FIELD( Version, FIELD_INTEGER ),
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DEFINE_FIELD( DirectoryEntries, FIELD_INTEGER ),
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DEFINE_FIELD( PreloadDirectoryEntries, FIELD_INTEGER ),
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DEFINE_FIELD( Alignment, FIELD_INTEGER ),
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END_BYTESWAP_DATADESC()
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BEGIN_BYTESWAP_DATADESC( ZIP_PreloadDirectoryEntry )
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DEFINE_FIELD( Length, FIELD_INTEGER ),
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DEFINE_FIELD( DataOffset, FIELD_INTEGER ),
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END_BYTESWAP_DATADESC()
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#ifdef WIN32
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//-----------------------------------------------------------------------------
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// For >2 GB File Support
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//-----------------------------------------------------------------------------
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class CWin32File
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{
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public:
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static HANDLE CreateTempFile( CUtlString &WritePath, CUtlString &FileName )
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{
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char tempFileName[MAX_PATH];
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if ( WritePath.IsEmpty() )
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{
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// use a safe name in the cwd
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char *pBuffer = tmpnam( NULL );
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if ( !pBuffer )
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{
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return INVALID_HANDLE_VALUE;
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}
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if ( pBuffer[0] == '\\' )
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{
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pBuffer++;
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}
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if ( pBuffer[strlen( pBuffer )-1] == '.' )
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{
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pBuffer[strlen( pBuffer )-1] = '\0';
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}
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V_snprintf( tempFileName, sizeof( tempFileName ), "_%s.tmp", pBuffer );
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}
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else
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{
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// generate safe name at the desired prefix
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char uniqueFilename[MAX_PATH];
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SYSTEMTIME sysTime; \
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GetLocalTime( &sysTime );
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sprintf( uniqueFilename, "%d_%d_%d_%d_%d.tmp", sysTime.wDay, sysTime.wHour, sysTime.wMinute, sysTime.wSecond, sysTime.wMilliseconds ); \
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V_ComposeFileName( WritePath.String(), uniqueFilename, tempFileName, sizeof( tempFileName ) );
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}
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FileName = tempFileName;
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HANDLE hFile = CreateFile( tempFileName, GENERIC_READ|GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL );
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return hFile;
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}
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static unsigned int FileSeek( HANDLE hFile, unsigned int distance, DWORD MoveMethod )
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{
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LARGE_INTEGER li;
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li.QuadPart = distance;
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li.LowPart = SetFilePointer( hFile, li.LowPart, &li.HighPart, MoveMethod);
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if ( li.LowPart == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR )
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{
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li.QuadPart = -1;
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}
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return ( unsigned int )li.QuadPart;
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}
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static unsigned int FileTell( HANDLE hFile )
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{
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return FileSeek( hFile, 0, FILE_CURRENT );
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}
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static bool FileRead( HANDLE hFile, void *pBuffer, unsigned int size )
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{
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DWORD numBytesRead;
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BOOL bSuccess = ::ReadFile( hFile, pBuffer, size, &numBytesRead, NULL );
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return bSuccess && ( numBytesRead == size );
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}
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static bool FileWrite( HANDLE hFile, void *pBuffer, unsigned int size )
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{
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DWORD numBytesWritten;
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BOOL bSuccess = WriteFile( hFile, pBuffer, size, &numBytesWritten, NULL );
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return bSuccess && ( numBytesWritten == size );
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}
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};
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#else
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class CWin32File
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{
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public:
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static HANDLE CreateTempFile( CUtlString &WritePath, CUtlString &FileName )
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{
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char tempFileName[MAX_PATH];
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if ( WritePath.IsEmpty() )
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{
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// use a safe name in the cwd
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char *pBuffer = tmpnam( NULL );
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if ( !pBuffer )
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{
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return INVALID_HANDLE_VALUE;
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}
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if ( pBuffer[0] == '\\' )
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{
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pBuffer++;
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}
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if ( pBuffer[strlen( pBuffer )-1] == '.' )
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{
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pBuffer[strlen( pBuffer )-1] = '\0';
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}
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V_snprintf( tempFileName, sizeof( tempFileName ), "_%s.tmp", pBuffer );
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}
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else
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{
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char uniqueFilename[MAX_PATH];
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static int counter = 0;
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time_t now = time( NULL );
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struct tm *tm = localtime( &now );
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sprintf( uniqueFilename, "%d_%d_%d_%d_%d.tmp", tm->tm_wday, tm->tm_hour, tm->tm_min, tm->tm_sec, ++counter ); \
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V_ComposeFileName( WritePath.String(), uniqueFilename, tempFileName, sizeof( tempFileName ) );
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}
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FileName = tempFileName;
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FILE *hFile = fopen( tempFileName, "rw+" );
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return (HANDLE)hFile;
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}
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static unsigned int FileSeek( HANDLE hFile, unsigned int distance, DWORD MoveMethod )
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{
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if ( fseeko( (FILE *)hFile, distance, MoveMethod ) == 0 )
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{
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return FileTell( hFile );
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}
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return 0;
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}
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static unsigned int FileTell( HANDLE hFile )
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{
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return ftello( (FILE *)hFile );
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}
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static bool FileRead( HANDLE hFile, void *pBuffer, unsigned int size )
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{
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size_t bytesRead = fread( pBuffer, 1, size, (FILE *)hFile );
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return bytesRead == size;
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}
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static bool FileWrite( HANDLE hFile, void *pBuffer, unsigned int size )
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{
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size_t bytesWrtitten = fwrite( pBuffer, 1, size, (FILE *)hFile );
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return bytesWrtitten == size;
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}
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};
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#endif
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//-----------------------------------------------------------------------------
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// Purpose: Interface to allow abstraction of zip file output methods, and
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// avoid duplication of code. Files may be written to a CUtlBuffer or a filestream
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//-----------------------------------------------------------------------------
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abstract_class IWriteStream
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{
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public:
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virtual void Put( const void* pMem, int size ) = 0;
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virtual unsigned int Tell( void ) = 0;
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};
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//-----------------------------------------------------------------------------
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// Purpose: Wrapper for CUtlBuffer methods
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//-----------------------------------------------------------------------------
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class CBufferStream : public IWriteStream
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{
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public:
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CBufferStream( CUtlBuffer& buff ) : IWriteStream(), m_buff( &buff ) {}
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// Implementing IWriteStream method
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virtual void Put( const void* pMem, int size ) {m_buff->Put( pMem, size );}
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// Implementing IWriteStream method
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virtual unsigned int Tell( void ) { return m_buff->TellPut(); }
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private:
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CUtlBuffer *m_buff;
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};
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//-----------------------------------------------------------------------------
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// Purpose: Wrapper for file I/O methods
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//-----------------------------------------------------------------------------
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class CFileStream : public IWriteStream
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{
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public:
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CFileStream( FILE *fout ) : IWriteStream(), m_file( fout ), m_hFile( INVALID_HANDLE_VALUE ) {}
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CFileStream( HANDLE hOutFile ) : IWriteStream(), m_file( NULL ), m_hFile( hOutFile ) {}
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// Implementing IWriteStream method
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virtual void Put( const void* pMem, int size )
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{
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if ( m_file )
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{
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fwrite( pMem, size, 1, m_file );
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}
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#ifdef WIN32
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else
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{
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DWORD numBytesWritten;
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WriteFile( m_hFile, pMem, size, &numBytesWritten, NULL );
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}
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#endif
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}
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// Implementing IWriteStream method
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virtual unsigned int Tell( void )
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{
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if ( m_file )
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{
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return ftell( m_file );
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}
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else
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{
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#ifdef WIN32
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return CWin32File::FileTell( m_hFile );
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#else
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return 0;
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#endif
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}
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}
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private:
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FILE *m_file;
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HANDLE m_hFile;
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};
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//-----------------------------------------------------------------------------
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// Purpose: Container for modifiable pak file which is embedded inside the .bsp file
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// itself. It's used to allow one-off files to be stored local to the map and it is
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// hooked into the file system as an override for searching for named files.
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//-----------------------------------------------------------------------------
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class CZipFile
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{
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public:
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// Construction
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CZipFile( const char *pDiskCacheWritePath, bool bSortByName );
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~CZipFile( void );
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// Public API
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// Clear all existing data
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void Reset( void );
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// Add file to zip under relative name
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void AddFileToZip( const char *relativename, const char *fullpath, IZip::eCompressionType compressionType );
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// Delete file from zip
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void RemoveFileFromZip( const char *relativename );
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// Add buffer to zip as a file with given name
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void AddBufferToZip( const char *relativename, void *data, int length, bool bTextMode, IZip::eCompressionType compressionType );
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// Check if a file already exists in the zip.
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bool FileExistsInZip( const char *relativename );
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// Reads a file from a zip file
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bool ReadFileFromZip( const char *relativename, bool bTextMode, CUtlBuffer &buf );
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bool ReadFileFromZip( HANDLE hZipFile, const char *relativename, bool bTextMode, CUtlBuffer &buf );
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// Initialize the zip file from a buffer
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void ParseFromBuffer( void *buffer, int bufferlength );
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HANDLE ParseFromDisk( const char *pFilename );
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// Estimate the size of the zip file (including header, padding, etc.)
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unsigned int EstimateSize();
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// Print out a directory of files in the zip.
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void PrintDirectory( void );
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// Use to iterate directory, pass 0 for first element
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// returns nonzero element id with filled buffer, or -1 at list conclusion
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int GetNextFilename( int id, char *pBuffer, int bufferSize, int &fileSize );
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// Write the zip to a buffer
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void SaveToBuffer( CUtlBuffer& buffer );
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// Write the zip to a filestream
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void SaveToDisk( FILE *fout );
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void SaveToDisk( HANDLE hOutFile );
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unsigned int CalculateSize( void );
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void ForceAlignment( bool aligned, bool bCompatibleFormat, unsigned int alignmentSize );
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unsigned int GetAlignment();
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void SetBigEndian( bool bigEndian );
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void ActivateByteSwapping( bool bActivate );
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private:
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enum
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{
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MAX_FILES_IN_ZIP = 32768,
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};
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typedef struct
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{
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CUtlSymbol m_Name;
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unsigned int filepos;
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int filelen;
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int uncompressedLen;
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CRC32_t crc32;
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IZip::eCompressionType compressionType;
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} TmpFileInfo_t;
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CByteswap m_Swap;
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unsigned int m_AlignmentSize;
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bool m_bForceAlignment;
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bool m_bCompatibleFormat;
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unsigned short CalculatePadding( unsigned int filenameLen, unsigned int pos );
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void SaveDirectory( IWriteStream& stream );
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int MakeXZipCommentString( char *pComment );
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void ParseXZipCommentString( const char *pComment );
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// Internal entry for faster searching, etc.
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class CZipEntry
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{
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public:
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CZipEntry( void );
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~CZipEntry( void );
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CZipEntry( const CZipEntry& src );
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// RB tree compare function
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static bool ZipFileLessFunc( CZipEntry const& src1, CZipEntry const& src2 );
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static bool ZipFileLessFunc_CaselessSort( CZipEntry const& src1, CZipEntry const& src2 );
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// Name of entry
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CUtlSymbol m_Name;
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// Lenth of data element
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int m_nCompressedSize;
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// Original, uncompressed size
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int m_nUncompressedSize;
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// Raw data, could be null and data may be in disk write cache
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void *m_pData;
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// Offset in Zip ( set and valid during final write )
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unsigned int m_ZipOffset;
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// CRC of blob
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CRC32_t m_ZipCRC;
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// Location of data in disk cache
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unsigned int m_DiskCacheOffset;
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unsigned int m_SourceDiskOffset;
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// The compression used on the data if any
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IZip::eCompressionType m_eCompressionType;
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};
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// For fast name lookup and sorting
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CUtlRBTree< CZipEntry, int > m_Files;
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// Used to buffer zip data, instead of ram
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bool m_bUseDiskCacheForWrites;
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HANDLE m_hDiskCacheWriteFile;
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CUtlString m_DiskCacheName;
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CUtlString m_DiskCacheWritePath;
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};
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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CZipFile::CZipEntry::CZipEntry( void )
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{
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m_Name = "";
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m_nCompressedSize = 0;
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m_nUncompressedSize = 0;
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m_pData = NULL;
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m_ZipOffset = 0;
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m_ZipCRC = 0;
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m_DiskCacheOffset = 0;
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m_SourceDiskOffset = 0;
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m_eCompressionType = IZip::eCompressionType_None;
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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// Input : src -
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//-----------------------------------------------------------------------------
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CZipFile::CZipEntry::CZipEntry( const CZipFile::CZipEntry& src )
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{
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m_Name = src.m_Name;
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m_nCompressedSize = src.m_nCompressedSize;
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m_nUncompressedSize = src.m_nUncompressedSize;
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m_eCompressionType = src.m_eCompressionType;
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if ( src.m_nCompressedSize > 0 && src.m_pData )
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{
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m_pData = malloc( src.m_nCompressedSize );
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memcpy( m_pData, src.m_pData, src.m_nCompressedSize );
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}
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else
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{
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m_pData = NULL;
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}
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m_ZipOffset = src.m_ZipOffset;
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m_ZipCRC = src.m_ZipCRC;
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m_DiskCacheOffset = src.m_DiskCacheOffset;
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m_SourceDiskOffset = src.m_SourceDiskOffset;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Clear any leftover data
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//-----------------------------------------------------------------------------
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CZipFile::CZipEntry::~CZipEntry( void )
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{
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if ( m_pData )
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{
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free( m_pData );
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose: Construction
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//-----------------------------------------------------------------------------
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CZipFile::CZipFile( const char *pDiskCacheWritePath, bool bSortByName )
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: m_Files( 0, 32 )
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{
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m_AlignmentSize = 0;
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m_bForceAlignment = false;
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m_bCompatibleFormat = true;
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m_bUseDiskCacheForWrites = ( pDiskCacheWritePath != NULL );
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m_DiskCacheWritePath = pDiskCacheWritePath;
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m_hDiskCacheWriteFile = INVALID_HANDLE_VALUE;
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if ( bSortByName )
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{
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m_Files.SetLessFunc( CZipEntry::ZipFileLessFunc_CaselessSort );
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}
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else
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{
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m_Files.SetLessFunc( CZipEntry::ZipFileLessFunc );
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose: Destroy zip data
|
|
//-----------------------------------------------------------------------------
|
|
CZipFile::~CZipFile( void )
|
|
{
|
|
m_bUseDiskCacheForWrites = false;
|
|
Reset();
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose: Delete all current data
|
|
//-----------------------------------------------------------------------------
|
|
void CZipFile::Reset( void )
|
|
{
|
|
m_Files.RemoveAll();
|
|
|
|
if ( m_hDiskCacheWriteFile != INVALID_HANDLE_VALUE )
|
|
{
|
|
#ifdef WIN32
|
|
CloseHandle( m_hDiskCacheWriteFile );
|
|
DeleteFile( m_DiskCacheName.String() );
|
|
#else
|
|
fclose( (FILE *)m_hDiskCacheWriteFile );
|
|
unlink( m_DiskCacheName.String() );
|
|
#endif
|
|
m_hDiskCacheWriteFile = INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
if ( m_bUseDiskCacheForWrites )
|
|
{
|
|
m_hDiskCacheWriteFile = CWin32File::CreateTempFile( m_DiskCacheWritePath, m_DiskCacheName );
|
|
}
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose: Comparison for sorting entries
|
|
// Input : src1 -
|
|
// src2 -
|
|
// Output : Returns true on success, false on failure.
|
|
//-----------------------------------------------------------------------------
|
|
bool CZipFile::CZipEntry::ZipFileLessFunc( CZipEntry const& src1, CZipEntry const& src2 )
|
|
{
|
|
return ( src1.m_Name < src2.m_Name );
|
|
}
|
|
|
|
bool CZipFile::CZipEntry::ZipFileLessFunc_CaselessSort( CZipEntry const& src1, CZipEntry const& src2 )
|
|
{
|
|
return ( V_stricmp( src1.m_Name.String(), src2.m_Name.String() ) < 0 );
|
|
}
|
|
|
|
void CZipFile::ForceAlignment( bool bAligned, bool bCompatibleFormat, unsigned int alignment )
|
|
{
|
|
m_bForceAlignment = bAligned;
|
|
m_AlignmentSize = alignment;
|
|
m_bCompatibleFormat = bCompatibleFormat;
|
|
|
|
if ( !bAligned )
|
|
{
|
|
m_AlignmentSize = 0;
|
|
}
|
|
else if ( !IsPowerOfTwo( m_AlignmentSize ) )
|
|
{
|
|
m_AlignmentSize = 0;
|
|
}
|
|
}
|
|
|
|
unsigned int CZipFile::GetAlignment()
|
|
{
|
|
if ( !m_bForceAlignment || !m_AlignmentSize )
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
return m_AlignmentSize;
|
|
}
|
|
|
|
void CZipFile::SetBigEndian( bool bigEndian )
|
|
{
|
|
m_Swap.SetTargetBigEndian( bigEndian );
|
|
}
|
|
|
|
void CZipFile::ActivateByteSwapping( bool bActivate )
|
|
{
|
|
m_Swap.ActivateByteSwapping( bActivate );
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose: Load pak file from raw buffer
|
|
// Input : *buffer -
|
|
// bufferlength -
|
|
//-----------------------------------------------------------------------------
|
|
void CZipFile::ParseFromBuffer( void *buffer, int bufferlength )
|
|
{
|
|
// Throw away old data
|
|
Reset();
|
|
|
|
// Initialize a buffer
|
|
CUtlBuffer buf( 0, bufferlength +1 ); // +1 for null termination
|
|
|
|
// need to swap bytes, so set the buffer opposite the machine's endian
|
|
buf.ActivateByteSwapping( m_Swap.IsSwappingBytes() );
|
|
|
|
buf.Put( buffer, bufferlength );
|
|
|
|
buf.SeekGet( CUtlBuffer::SEEK_TAIL, 0 );
|
|
unsigned int fileLen = buf.TellGet();
|
|
|
|
// Start from beginning
|
|
buf.SeekGet( CUtlBuffer::SEEK_HEAD, 0 );
|
|
|
|
ZIP_EndOfCentralDirRecord rec = { 0 };
|
|
|
|
#ifdef DBGFLAG_ASSERT
|
|
bool bFoundEndOfCentralDirRecord = false;
|
|
#endif
|
|
unsigned int offset = fileLen - sizeof( ZIP_EndOfCentralDirRecord );
|
|
// If offset is ever greater than startOffset then it means that it has
|
|
// wrapped. This used to be a tautological >= 0 test.
|
|
ANALYZE_SUPPRESS( 6293 ); // warning C6293: Ill-defined for-loop: counts down from minimum
|
|
for ( unsigned int startOffset = offset; offset <= startOffset; offset-- )
|
|
{
|
|
buf.SeekGet( CUtlBuffer::SEEK_HEAD, offset );
|
|
buf.GetObjects( &rec );
|
|
if ( rec.signature == PKID( 5, 6 ) )
|
|
{
|
|
#ifdef DBGFLAG_ASSERT
|
|
bFoundEndOfCentralDirRecord = true;
|
|
#endif
|
|
|
|
// Set any xzip configuration
|
|
if ( rec.commentLength )
|
|
{
|
|
char commentString[128];
|
|
int commentLength = min( rec.commentLength, sizeof( commentString ) );
|
|
buf.Get( commentString, commentLength );
|
|
if ( commentLength == sizeof( commentString ) )
|
|
--commentLength;
|
|
commentString[commentLength] = '\0';
|
|
ParseXZipCommentString( commentString );
|
|
}
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
// wrong record
|
|
rec.nCentralDirectoryEntries_Total = 0;
|
|
}
|
|
}
|
|
Assert( bFoundEndOfCentralDirRecord );
|
|
|
|
// Make sure there are some files to parse
|
|
int numzipfiles = rec.nCentralDirectoryEntries_Total;
|
|
if ( numzipfiles <= 0 )
|
|
{
|
|
// No files
|
|
return;
|
|
}
|
|
|
|
buf.SeekGet( CUtlBuffer::SEEK_HEAD, rec.startOfCentralDirOffset );
|
|
|
|
// Allocate space for directory
|
|
TmpFileInfo_t *newfiles = new TmpFileInfo_t[numzipfiles];
|
|
Assert( newfiles );
|
|
|
|
// build directory
|
|
int i;
|
|
for ( i = 0; i < rec.nCentralDirectoryEntries_Total; i++ )
|
|
{
|
|
ZIP_FileHeader zipFileHeader;
|
|
buf.GetObjects( &zipFileHeader );
|
|
Assert( zipFileHeader.signature == PKID( 1, 2 ) );
|
|
if ( zipFileHeader.compressionMethod != IZip::eCompressionType_None &&
|
|
zipFileHeader.compressionMethod != IZip::eCompressionType_LZMA )
|
|
{
|
|
Assert( false );
|
|
Warning( "Opening ZIP file with unsupported compression type\n");
|
|
}
|
|
|
|
char tmpString[1024] = { 0 };
|
|
buf.Get( tmpString, Min( (unsigned int)zipFileHeader.fileNameLength, (unsigned int)sizeof( tmpString ) ) );
|
|
Q_strlower( tmpString );
|
|
|
|
// can determine actual filepos, assuming a well formed zip
|
|
newfiles[i].m_Name = tmpString;
|
|
newfiles[i].filelen = zipFileHeader.compressedSize;
|
|
newfiles[i].uncompressedLen = zipFileHeader.uncompressedSize;
|
|
newfiles[i].crc32 = zipFileHeader.crc32;
|
|
newfiles[i].filepos = zipFileHeader.relativeOffsetOfLocalHeader +
|
|
sizeof( ZIP_LocalFileHeader ) +
|
|
zipFileHeader.fileNameLength +
|
|
zipFileHeader.extraFieldLength;
|
|
newfiles[i].compressionType = (IZip::eCompressionType)zipFileHeader.compressionMethod;
|
|
|
|
int nextOffset;
|
|
if ( m_bCompatibleFormat )
|
|
{
|
|
nextOffset = zipFileHeader.extraFieldLength + zipFileHeader.fileCommentLength;
|
|
}
|
|
else
|
|
{
|
|
nextOffset = 0;
|
|
}
|
|
buf.SeekGet( CUtlBuffer::SEEK_CURRENT, nextOffset );
|
|
}
|
|
|
|
// Insert current data into rb tree
|
|
for ( i=0; i<numzipfiles; i++ )
|
|
{
|
|
CZipEntry e;
|
|
e.m_Name = newfiles[i].m_Name;
|
|
e.m_nCompressedSize = newfiles[i].filelen;
|
|
e.m_ZipCRC = newfiles[i].crc32;
|
|
e.m_nUncompressedSize = newfiles[i].uncompressedLen;
|
|
e.m_eCompressionType = newfiles[i].compressionType;
|
|
|
|
// Make sure length is reasonable
|
|
if ( e.m_nCompressedSize > 0 )
|
|
{
|
|
e.m_pData = malloc( e.m_nCompressedSize );
|
|
|
|
// Copy in data
|
|
buf.SeekGet( CUtlBuffer::SEEK_HEAD, newfiles[i].filepos );
|
|
buf.Get( e.m_pData, e.m_nCompressedSize );
|
|
}
|
|
else
|
|
{
|
|
e.m_pData = NULL;
|
|
}
|
|
|
|
// Add to tree
|
|
m_Files.Insert( e );
|
|
}
|
|
|
|
// Through away directory
|
|
delete[] newfiles;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose: Mount pak file from disk
|
|
//-----------------------------------------------------------------------------
|
|
HANDLE CZipFile::ParseFromDisk( const char *pFilename )
|
|
{
|
|
#ifdef WIN32
|
|
HANDLE hFile = CreateFile( pFilename, GENERIC_READ|GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );
|
|
if ( hFile == INVALID_HANDLE_VALUE )
|
|
{
|
|
// not found
|
|
return NULL;
|
|
}
|
|
#else
|
|
HANDLE hFile = fopen( pFilename, "rw+" );
|
|
if ( !hFile )
|
|
{
|
|
// not found
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
unsigned int fileLen = CWin32File::FileSeek( hFile, 0, FILE_END );
|
|
CWin32File::FileSeek( hFile, 0, FILE_BEGIN );
|
|
if ( fileLen < sizeof( ZIP_EndOfCentralDirRecord ) )
|
|
{
|
|
// bad format
|
|
#ifdef WIN32
|
|
CloseHandle( hFile );
|
|
#else
|
|
fclose( (FILE *)hFile );
|
|
#endif
|
|
return NULL;
|
|
}
|
|
|
|
// need to get the central dir
|
|
ZIP_EndOfCentralDirRecord rec = { 0 };
|
|
unsigned int offset = fileLen - sizeof( ZIP_EndOfCentralDirRecord );
|
|
// If offset is ever greater than startOffset then it means that it has
|
|
// wrapped. This used to be a tautological >= 0 test.
|
|
ANALYZE_SUPPRESS( 6293 ); // warning C6293: Ill-defined for-loop: counts down from minimum
|
|
for ( unsigned int startOffset = offset; offset <= startOffset; offset-- )
|
|
{
|
|
CWin32File::FileSeek( hFile, offset, FILE_BEGIN );
|
|
|
|
CWin32File::FileRead( hFile, &rec, sizeof( rec ) );
|
|
m_Swap.SwapFieldsToTargetEndian( &rec );
|
|
|
|
if ( rec.signature == PKID( 5, 6 ) )
|
|
{
|
|
// Set any xzip configuration
|
|
if ( rec.commentLength )
|
|
{
|
|
char commentString[128];
|
|
int commentLength = min( rec.commentLength, sizeof( commentString ) );
|
|
CWin32File::FileRead( hFile, commentString, commentLength );
|
|
if ( commentLength == sizeof( commentString ) )
|
|
--commentLength;
|
|
commentString[commentLength] = '\0';
|
|
ParseXZipCommentString( commentString );
|
|
}
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
// wrong record
|
|
rec.nCentralDirectoryEntries_Total = 0;
|
|
}
|
|
}
|
|
|
|
// Make sure there are some files to parse
|
|
int numZipFiles = rec.nCentralDirectoryEntries_Total;
|
|
if ( numZipFiles <= 0 )
|
|
{
|
|
// No files
|
|
#ifdef WIN32
|
|
CloseHandle( hFile );
|
|
#else
|
|
fclose( (FILE *)hFile );
|
|
#endif
|
|
return NULL;
|
|
}
|
|
|
|
CWin32File::FileSeek( hFile, rec.startOfCentralDirOffset, FILE_BEGIN );
|
|
|
|
// read entire central dir into memory
|
|
CUtlBuffer zipDirBuff( 0, rec.centralDirectorySize, 0 );
|
|
zipDirBuff.ActivateByteSwapping( m_Swap.IsSwappingBytes() );
|
|
CWin32File::FileRead( hFile, zipDirBuff.Base(), rec.centralDirectorySize );
|
|
zipDirBuff.SeekPut( CUtlBuffer::SEEK_HEAD, rec.centralDirectorySize );
|
|
|
|
// build directory
|
|
for ( int i = 0; i < numZipFiles; i++ )
|
|
{
|
|
ZIP_FileHeader zipFileHeader;
|
|
zipDirBuff.GetObjects( &zipFileHeader );
|
|
|
|
if ( zipFileHeader.signature != PKID( 1, 2 )
|
|
|| ( zipFileHeader.compressionMethod != IZip::eCompressionType_None
|
|
&& zipFileHeader.compressionMethod != IZip::eCompressionType_LZMA ) )
|
|
{
|
|
// bad contents
|
|
#ifdef WIN32
|
|
CloseHandle( hFile );
|
|
#else
|
|
fclose( (FILE *)hFile );
|
|
#endif
|
|
return NULL;
|
|
}
|
|
|
|
char fileName[1024];
|
|
zipDirBuff.Get( fileName, zipFileHeader.fileNameLength );
|
|
fileName[zipFileHeader.fileNameLength] = '\0';
|
|
Q_strlower( fileName );
|
|
|
|
// can determine actual filepos, assuming a well formed zip
|
|
CZipEntry e;
|
|
e.m_Name = fileName;
|
|
e.m_nCompressedSize = zipFileHeader.compressedSize;
|
|
e.m_nUncompressedSize = zipFileHeader.uncompressedSize;
|
|
e.m_ZipCRC = zipFileHeader.crc32;
|
|
e.m_SourceDiskOffset = zipFileHeader.relativeOffsetOfLocalHeader +
|
|
sizeof( ZIP_LocalFileHeader ) +
|
|
zipFileHeader.fileNameLength +
|
|
zipFileHeader.extraFieldLength;
|
|
e.m_eCompressionType = (IZip::eCompressionType)zipFileHeader.compressionMethod;
|
|
|
|
// Add to tree
|
|
m_Files.Insert( e );
|
|
|
|
int nextOffset;
|
|
if ( m_bCompatibleFormat )
|
|
{
|
|
nextOffset = zipFileHeader.extraFieldLength + zipFileHeader.fileCommentLength;
|
|
}
|
|
else
|
|
{
|
|
nextOffset = 0;
|
|
}
|
|
|
|
zipDirBuff.SeekGet( CUtlBuffer::SEEK_CURRENT, nextOffset );
|
|
}
|
|
|
|
return hFile;
|
|
}
|
|
|
|
static int GetLengthOfBinStringAsText( const char *pSrc, int srcSize )
|
|
{
|
|
const char *pSrcScan = pSrc;
|
|
const char *pSrcEnd = pSrc + srcSize;
|
|
int numChars = 0;
|
|
for( ; pSrcScan < pSrcEnd; pSrcScan++ )
|
|
{
|
|
if( *pSrcScan == '\n' )
|
|
{
|
|
numChars += 2;
|
|
}
|
|
else
|
|
{
|
|
numChars++;
|
|
}
|
|
}
|
|
return numChars;
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Copies text data from a form appropriate for disk to a normal string
|
|
//-----------------------------------------------------------------------------
|
|
static void ReadTextData( const char *pSrc, int nSrcSize, CUtlBuffer &buf )
|
|
{
|
|
buf.EnsureCapacity( nSrcSize + 1 );
|
|
const char *pSrcEnd = pSrc + nSrcSize;
|
|
for ( const char *pSrcScan = pSrc; pSrcScan < pSrcEnd; ++pSrcScan )
|
|
{
|
|
if ( *pSrcScan == '\r' )
|
|
{
|
|
if ( pSrcScan[1] == '\n' )
|
|
{
|
|
buf.PutChar( '\n' );
|
|
++pSrcScan;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
buf.PutChar( *pSrcScan );
|
|
}
|
|
|
|
// Null terminate
|
|
buf.PutChar( '\0' );
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Copies text data into a form appropriate for disk
|
|
//-----------------------------------------------------------------------------
|
|
static void CopyTextData( char *pDst, const char *pSrc, int dstSize, int srcSize )
|
|
{
|
|
const char *pSrcScan = pSrc;
|
|
const char *pSrcEnd = pSrc + srcSize;
|
|
char *pDstScan = pDst;
|
|
|
|
#ifdef DBGFLAG_ASSERT
|
|
char *pDstEnd = pDst + dstSize;
|
|
#endif
|
|
|
|
for ( ; pSrcScan < pSrcEnd; pSrcScan++ )
|
|
{
|
|
if ( *pSrcScan == '\n' )
|
|
{
|
|
*pDstScan = '\r';
|
|
pDstScan++;
|
|
*pDstScan = '\n';
|
|
pDstScan++;
|
|
}
|
|
else
|
|
{
|
|
*pDstScan = *pSrcScan;
|
|
pDstScan++;
|
|
}
|
|
}
|
|
Assert( pSrcScan == pSrcEnd );
|
|
Assert( pDstScan == pDstEnd );
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose: Adds a new lump, or overwrites existing one
|
|
// Input : *relativename -
|
|
// *data -
|
|
// length -
|
|
//-----------------------------------------------------------------------------
|
|
void CZipFile::AddBufferToZip( const char *relativename, void *data, int length, bool bTextMode, IZip::eCompressionType compressionType )
|
|
{
|
|
// Lower case only
|
|
char name[512];
|
|
Q_strcpy( name, relativename );
|
|
Q_strlower( name );
|
|
|
|
int outLength = length;
|
|
int uncompressedLength = length;
|
|
void *outData = data;
|
|
CUtlBuffer textTransform;
|
|
CUtlBuffer compressionTransform;
|
|
|
|
if ( bTextMode )
|
|
{
|
|
int textLen = GetLengthOfBinStringAsText( ( const char * )outData, outLength );
|
|
textTransform.EnsureCapacity( textLen );
|
|
CopyTextData( (char *)textTransform.Base(), (char *)outData, textLen, outLength );
|
|
|
|
outData = (void *)textTransform.Base();
|
|
outLength = textLen;
|
|
uncompressedLength = textLen;
|
|
}
|
|
|
|
// uncompressed data final at this point (CRC is before compression)
|
|
CRC32_t zipCRC;
|
|
CRC32_Init( &zipCRC );
|
|
CRC32_ProcessBuffer( &zipCRC, outData, outLength );
|
|
CRC32_Final( &zipCRC );
|
|
|
|
#ifdef ZIP_SUPPORT_LZMA_ENCODE
|
|
if ( compressionType == IZip::eCompressionType_LZMA )
|
|
{
|
|
unsigned int compressedSize = 0;
|
|
unsigned char *pCompressedOutput = LZMA_Compress( (unsigned char *)outData, outLength, &compressedSize );
|
|
if ( !pCompressedOutput || compressedSize < sizeof( lzma_header_t ) )
|
|
{
|
|
Warning( "ZipFile: LZMA compression failed\n" );
|
|
return;
|
|
}
|
|
|
|
// Fixup LZMA header for ZIP payload usage
|
|
// The output of LZMA_Compress uses lzma_header_t, defined alongside it.
|
|
//
|
|
// ZIP payload format, see ZIP spec 5.8.8:
|
|
// LZMA Version Information 2 bytes
|
|
// LZMA Properties Size 2 bytes
|
|
// LZMA Properties Data variable, defined by "LZMA Properties Size"
|
|
unsigned int nZIPHeader = 2 + 2 + sizeof( lzma_header_t().properties );
|
|
unsigned int finalCompressedSize = compressedSize - sizeof( lzma_header_t ) + nZIPHeader;
|
|
compressionTransform.EnsureCapacity( finalCompressedSize );
|
|
|
|
// LZMA version
|
|
compressionTransform.PutUnsignedChar( LZMA_SDK_VERSION_MAJOR );
|
|
compressionTransform.PutUnsignedChar( LZMA_SDK_VERSION_MINOR );
|
|
// properties size
|
|
uint16 nSwappedPropertiesSize = LittleWord( sizeof( lzma_header_t().properties ) );
|
|
compressionTransform.Put( &nSwappedPropertiesSize, sizeof( nSwappedPropertiesSize ) );
|
|
// properties
|
|
compressionTransform.Put( &(((lzma_header_t *)pCompressedOutput)->properties), sizeof( lzma_header_t().properties ) );
|
|
// payload
|
|
compressionTransform.Put( pCompressedOutput + sizeof( lzma_header_t ), compressedSize - sizeof( lzma_header_t ) );
|
|
|
|
// Free original
|
|
free( pCompressedOutput );
|
|
pCompressedOutput = NULL;
|
|
|
|
outData = (void *)compressionTransform.Base();
|
|
outLength = finalCompressedSize;
|
|
// (Not updating uncompressedLength)
|
|
}
|
|
else
|
|
#endif
|
|
/* else from ifdef */ if ( compressionType != IZip::eCompressionType_None )
|
|
{
|
|
Error( "Calling AddBufferToZip with unknown compression type\n" );
|
|
return;
|
|
}
|
|
|
|
// See if entry is in list already
|
|
CZipEntry e;
|
|
e.m_Name = name;
|
|
int index = m_Files.Find( e );
|
|
|
|
// If already existing, throw away old data and update data and length
|
|
if ( index != m_Files.InvalidIndex() )
|
|
{
|
|
CZipEntry *update = &m_Files[ index ];
|
|
if ( update->m_pData )
|
|
{
|
|
free( update->m_pData );
|
|
}
|
|
|
|
update->m_eCompressionType = compressionType;
|
|
update->m_pData = malloc( outLength );
|
|
memcpy( update->m_pData, outData, outLength );
|
|
update->m_nCompressedSize = outLength;
|
|
update->m_nUncompressedSize = uncompressedLength;
|
|
update->m_ZipCRC = zipCRC;
|
|
|
|
if ( m_hDiskCacheWriteFile != INVALID_HANDLE_VALUE )
|
|
{
|
|
update->m_DiskCacheOffset = CWin32File::FileTell( m_hDiskCacheWriteFile );
|
|
CWin32File::FileWrite( m_hDiskCacheWriteFile, update->m_pData, update->m_nCompressedSize );
|
|
free( update->m_pData );
|
|
update->m_pData = NULL;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Create a new entry
|
|
e.m_nCompressedSize = outLength;
|
|
e.m_nUncompressedSize = uncompressedLength;
|
|
e.m_eCompressionType = compressionType;
|
|
e.m_ZipCRC = zipCRC;
|
|
if ( outLength > 0 )
|
|
{
|
|
e.m_pData = malloc( outLength );
|
|
memcpy( e.m_pData, outData, outLength );
|
|
|
|
if ( m_hDiskCacheWriteFile != INVALID_HANDLE_VALUE )
|
|
{
|
|
e.m_DiskCacheOffset = CWin32File::FileTell( m_hDiskCacheWriteFile );
|
|
CWin32File::FileWrite( m_hDiskCacheWriteFile, e.m_pData, e.m_nCompressedSize );
|
|
free( e.m_pData );
|
|
e.m_pData = NULL;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
e.m_pData = NULL;
|
|
}
|
|
|
|
m_Files.Insert( e );
|
|
}
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Reads a file from the zip
|
|
//-----------------------------------------------------------------------------
|
|
bool CZipFile::ReadFileFromZip( const char *pRelativeName, bool bTextMode, CUtlBuffer &buf )
|
|
{
|
|
return ReadFileFromZip( 0, pRelativeName, bTextMode, buf );
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Reads a file from the zip. Requires the zip file handle if this zip was loaded via ParseFromDisk
|
|
//-----------------------------------------------------------------------------
|
|
bool CZipFile::ReadFileFromZip( HANDLE hZipFile, const char *pRelativeName, bool bTextMode, CUtlBuffer &buf )
|
|
{
|
|
// Lower case only
|
|
char pName[512];
|
|
Q_strncpy( pName, pRelativeName, 512 );
|
|
Q_strlower( pName );
|
|
|
|
// See if entry is in list already
|
|
CZipEntry e;
|
|
e.m_Name = pName;
|
|
int nIndex = m_Files.Find( e );
|
|
if ( nIndex == m_Files.InvalidIndex() )
|
|
{
|
|
// not found
|
|
return false;
|
|
}
|
|
|
|
CZipEntry *pEntry = &m_Files[nIndex];
|
|
|
|
void *pData = pEntry->m_pData;
|
|
CUtlBuffer readBuffer;
|
|
if ( !pData && hZipFile )
|
|
{
|
|
readBuffer.EnsureCapacity( pEntry->m_nCompressedSize );
|
|
CWin32File::FileSeek( hZipFile, pEntry->m_SourceDiskOffset, FILE_BEGIN );
|
|
if ( !CWin32File::FileRead( hZipFile, readBuffer.Base(), pEntry->m_nCompressedSize ) )
|
|
{
|
|
return false;
|
|
}
|
|
|
|
pData = readBuffer.Base();
|
|
}
|
|
|
|
CUtlBuffer decompressTransform;
|
|
if ( pEntry->m_eCompressionType != IZip::eCompressionType_None )
|
|
{
|
|
if ( pEntry->m_eCompressionType == IZip::eCompressionType_LZMA )
|
|
{
|
|
decompressTransform.EnsureCapacity( pEntry->m_nUncompressedSize );
|
|
|
|
CLZMAStream decompressStream;
|
|
decompressStream.InitZIPHeader( pEntry->m_nCompressedSize, pEntry->m_nUncompressedSize );
|
|
|
|
unsigned int nCompressedBytesRead = 0;
|
|
unsigned int nOutputBytesWritten = 0;
|
|
bool bSuccess = decompressStream.Read( (unsigned char *)pData, pEntry->m_nCompressedSize,
|
|
(unsigned char *)decompressTransform.Base(), decompressTransform.Size(),
|
|
nCompressedBytesRead, nOutputBytesWritten );
|
|
if ( !bSuccess ||
|
|
(int)nCompressedBytesRead != pEntry->m_nCompressedSize ||
|
|
(int)nOutputBytesWritten != pEntry->m_nUncompressedSize )
|
|
{
|
|
Error( "Zip: Failed decompressing LZMA data\n" );
|
|
return false;
|
|
}
|
|
|
|
pData = decompressTransform.Base();
|
|
}
|
|
else
|
|
{
|
|
Error( "Unsupported compression type in Zip file: %u\n", pEntry->m_eCompressionType );
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if ( bTextMode )
|
|
{
|
|
buf.SetBufferType( true, false );
|
|
ReadTextData( (const char *)pData, pEntry->m_nUncompressedSize, buf );
|
|
}
|
|
else
|
|
{
|
|
buf.SetBufferType( false, false );
|
|
buf.Put( pData, pEntry->m_nUncompressedSize );
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose: Check if a file already exists in the zip.
|
|
// Input : *relativename -
|
|
//-----------------------------------------------------------------------------
|
|
bool CZipFile::FileExistsInZip( const char *pRelativeName )
|
|
{
|
|
// Lower case only
|
|
char pName[512];
|
|
Q_strncpy( pName, pRelativeName, 512 );
|
|
Q_strlower( pName );
|
|
|
|
// See if entry is in list already
|
|
CZipEntry e;
|
|
e.m_Name = pName;
|
|
int nIndex = m_Files.Find( e );
|
|
|
|
// If it is, then it exists in the pack!
|
|
return nIndex != m_Files.InvalidIndex();
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose: Adds a new file to the zip.
|
|
//-----------------------------------------------------------------------------
|
|
void CZipFile::AddFileToZip( const char *relativename, const char *fullpath, IZip::eCompressionType compressionType )
|
|
{
|
|
FILE *temp = fopen( fullpath, "rb" );
|
|
if ( !temp )
|
|
return;
|
|
|
|
// Determine length
|
|
fseek( temp, 0, SEEK_END );
|
|
int size = ftell( temp );
|
|
fseek( temp, 0, SEEK_SET );
|
|
byte *buf = (byte *)malloc( size + 1 );
|
|
|
|
// Read data
|
|
fread( buf, size, 1, temp );
|
|
fclose( temp );
|
|
|
|
// Now add as a buffer
|
|
AddBufferToZip( relativename, buf, size, false, compressionType );
|
|
|
|
free( buf );
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose: Removes a file from the zip.
|
|
//-----------------------------------------------------------------------------
|
|
void CZipFile::RemoveFileFromZip( const char *relativename )
|
|
{
|
|
CZipEntry e;
|
|
e.m_Name = relativename;
|
|
int index = m_Files.Find( e );
|
|
|
|
if ( index != m_Files.InvalidIndex() )
|
|
{
|
|
CZipEntry update = m_Files[index];
|
|
m_Files.Remove( update );
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------
|
|
// Purpose: Calculates how many bytes should be added to the extra field
|
|
// to push the start of the file data to the next aligned boundary
|
|
// Output: Required padding size
|
|
//---------------------------------------------------------------
|
|
unsigned short CZipFile::CalculatePadding( unsigned int filenameLen, unsigned int pos )
|
|
{
|
|
if ( m_AlignmentSize == 0 )
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
unsigned int headerSize = sizeof( ZIP_LocalFileHeader ) + filenameLen;
|
|
return (unsigned short)( m_AlignmentSize - ( ( pos + headerSize ) % m_AlignmentSize ) );
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose: Create the XZIP identifying comment string
|
|
// Output : Length
|
|
//-----------------------------------------------------------------------------
|
|
int CZipFile::MakeXZipCommentString( char *pCommentString )
|
|
{
|
|
char tempString[XZIP_COMMENT_LENGTH];
|
|
|
|
memset( tempString, 0, sizeof( tempString ) );
|
|
V_snprintf( tempString, sizeof( tempString ), "XZP%c %d", m_bCompatibleFormat ? '1' : '2', m_AlignmentSize );
|
|
if ( pCommentString )
|
|
{
|
|
memcpy( pCommentString, tempString, sizeof( tempString ) );
|
|
}
|
|
|
|
// expected fixed length
|
|
return XZIP_COMMENT_LENGTH;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose: An XZIP has its configuration in the ascii comment
|
|
//-----------------------------------------------------------------------------
|
|
void CZipFile::ParseXZipCommentString( const char *pCommentString )
|
|
{
|
|
if ( !V_strnicmp( pCommentString, "XZP", 3 ) )
|
|
{
|
|
m_bCompatibleFormat = true;
|
|
if ( pCommentString[3] == '2' )
|
|
{
|
|
m_bCompatibleFormat = false;
|
|
}
|
|
|
|
// parse out the alignement configuration
|
|
if ( !m_bForceAlignment )
|
|
{
|
|
m_AlignmentSize = 0;
|
|
sscanf( pCommentString + 4, "%d", &m_AlignmentSize );
|
|
if ( !IsPowerOfTwo( m_AlignmentSize ) )
|
|
{
|
|
m_AlignmentSize = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose: Calculate the exact size of zip file, with headers and padding
|
|
// Output : int
|
|
//-----------------------------------------------------------------------------
|
|
unsigned int CZipFile::CalculateSize( void )
|
|
{
|
|
unsigned int size = 0;
|
|
unsigned int dirHeaders = 0;
|
|
for ( int i = m_Files.FirstInorder(); i != m_Files.InvalidIndex(); i = m_Files.NextInorder( i ) )
|
|
{
|
|
CZipEntry *e = &m_Files[ i ];
|
|
|
|
if ( e->m_nCompressedSize == 0 )
|
|
continue;
|
|
|
|
// local file header
|
|
size += sizeof( ZIP_LocalFileHeader );
|
|
size += strlen( e->m_Name.String() );
|
|
|
|
// every file has a directory header that duplicates the filename
|
|
dirHeaders += sizeof( ZIP_FileHeader ) + strlen( e->m_Name.String() );
|
|
|
|
// calculate padding
|
|
if ( m_AlignmentSize != 0 )
|
|
{
|
|
// round up to next boundary
|
|
unsigned int nextBoundary = ( size + m_AlignmentSize ) & ~( m_AlignmentSize - 1 );
|
|
|
|
// the directory header also duplicates the padding
|
|
dirHeaders += nextBoundary - size;
|
|
|
|
size = nextBoundary;
|
|
}
|
|
|
|
// data size
|
|
size += e->m_nCompressedSize;
|
|
}
|
|
|
|
size += dirHeaders;
|
|
|
|
// All processed zip files will have a comment string
|
|
size += sizeof( ZIP_EndOfCentralDirRecord ) + MakeXZipCommentString( NULL );
|
|
|
|
return size;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose: Print a directory of files in the zip
|
|
//-----------------------------------------------------------------------------
|
|
void CZipFile::PrintDirectory( void )
|
|
{
|
|
for ( int i = m_Files.FirstInorder(); i != m_Files.InvalidIndex(); i = m_Files.NextInorder( i ) )
|
|
{
|
|
CZipEntry *e = &m_Files[ i ];
|
|
|
|
Msg( "%s\n", e->m_Name.String() );
|
|
}
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose: Iterate through directory
|
|
//-----------------------------------------------------------------------------
|
|
int CZipFile::GetNextFilename( int id, char *pBuffer, int bufferSize, int &fileSize )
|
|
{
|
|
if ( id == -1 )
|
|
{
|
|
id = m_Files.FirstInorder();
|
|
}
|
|
else
|
|
{
|
|
id = m_Files.NextInorder( id );
|
|
}
|
|
if ( id == m_Files.InvalidIndex() )
|
|
{
|
|
// list is empty
|
|
return -1;
|
|
}
|
|
|
|
CZipEntry *e = &m_Files[id];
|
|
|
|
Q_strncpy( pBuffer, e->m_Name.String(), bufferSize );
|
|
fileSize = e->m_nUncompressedSize;
|
|
|
|
return id;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose: Store data out to disk
|
|
//-----------------------------------------------------------------------------
|
|
void CZipFile::SaveToDisk( FILE *fout )
|
|
{
|
|
CFileStream stream( fout );
|
|
SaveDirectory( stream );
|
|
}
|
|
|
|
void CZipFile::SaveToDisk( HANDLE hOutFile )
|
|
{
|
|
CFileStream stream( hOutFile );
|
|
SaveDirectory( stream );
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose: Store data out to a CUtlBuffer
|
|
//-----------------------------------------------------------------------------
|
|
void CZipFile::SaveToBuffer( CUtlBuffer& buf )
|
|
{
|
|
CBufferStream stream( buf );
|
|
SaveDirectory( stream );
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Purpose: Store data back out to a stream (could be CUtlBuffer or filestream)
|
|
//-----------------------------------------------------------------------------
|
|
void CZipFile::SaveDirectory( IWriteStream& stream )
|
|
{
|
|
void *pPaddingBuffer = NULL;
|
|
if ( m_AlignmentSize )
|
|
{
|
|
// get a temp buffer for all padding work
|
|
pPaddingBuffer = malloc( m_AlignmentSize );
|
|
memset( pPaddingBuffer, 0x00, m_AlignmentSize );
|
|
}
|
|
|
|
if ( m_hDiskCacheWriteFile != INVALID_HANDLE_VALUE )
|
|
{
|
|
#ifdef WIN32
|
|
FlushFileBuffers( m_hDiskCacheWriteFile );
|
|
#else
|
|
fflush( (FILE *)m_hDiskCacheWriteFile );
|
|
#endif
|
|
}
|
|
|
|
// Might be writing a zip into a larger stream
|
|
unsigned int zipOffsetInStream = stream.Tell();
|
|
|
|
int i;
|
|
for ( i = m_Files.FirstInorder(); i != m_Files.InvalidIndex(); i = m_Files.NextInorder( i ) )
|
|
{
|
|
CZipEntry *e = &m_Files[i];
|
|
Assert( e );
|
|
|
|
// Fix up the offset
|
|
e->m_ZipOffset = stream.Tell() - zipOffsetInStream;
|
|
|
|
if ( e->m_nCompressedSize > 0 && ( m_hDiskCacheWriteFile != INVALID_HANDLE_VALUE ) )
|
|
{
|
|
// get the data back from the write cache
|
|
e->m_pData = malloc( e->m_nCompressedSize );
|
|
if ( e->m_pData )
|
|
{
|
|
CWin32File::FileSeek( m_hDiskCacheWriteFile, e->m_DiskCacheOffset, FILE_BEGIN );
|
|
CWin32File::FileRead( m_hDiskCacheWriteFile, e->m_pData, e->m_nCompressedSize );
|
|
}
|
|
}
|
|
|
|
if ( e->m_nCompressedSize > 0 && e->m_pData != NULL )
|
|
{
|
|
ZIP_LocalFileHeader hdr = { 0 };
|
|
hdr.signature = PKID( 3, 4 );
|
|
hdr.versionNeededToExtract = 10; // No special features or even compression here, set to 1.0
|
|
#ifdef ZIP_SUPPORT_LZMA_ENCODE
|
|
if ( e->m_eCompressionType == IZip::eCompressionType_LZMA )
|
|
{
|
|
// Per ZIP spec 5.8.8
|
|
hdr.versionNeededToExtract = 63;
|
|
}
|
|
#endif
|
|
hdr.flags = 0;
|
|
hdr.compressionMethod = e->m_eCompressionType;
|
|
hdr.lastModifiedTime = 0;
|
|
hdr.lastModifiedDate = 0;
|
|
hdr.crc32 = e->m_ZipCRC;
|
|
|
|
const char *pFilename = e->m_Name.String();
|
|
hdr.compressedSize = e->m_nCompressedSize;
|
|
hdr.uncompressedSize = e->m_nUncompressedSize;
|
|
hdr.fileNameLength = strlen( pFilename );
|
|
hdr.extraFieldLength = CalculatePadding( hdr.fileNameLength, e->m_ZipOffset );
|
|
int extraFieldLength = hdr.extraFieldLength;
|
|
|
|
// Swap header in place
|
|
m_Swap.SwapFieldsToTargetEndian( &hdr );
|
|
stream.Put( &hdr, sizeof( hdr ) );
|
|
stream.Put( pFilename, strlen( pFilename ) );
|
|
stream.Put( pPaddingBuffer, extraFieldLength );
|
|
stream.Put( e->m_pData, e->m_nCompressedSize );
|
|
|
|
if ( m_hDiskCacheWriteFile != INVALID_HANDLE_VALUE )
|
|
{
|
|
free( e->m_pData );
|
|
|
|
// temp hackery for the logic below to succeed
|
|
e->m_pData = (void*)0xFFFFFFFF;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( m_hDiskCacheWriteFile != INVALID_HANDLE_VALUE )
|
|
{
|
|
CWin32File::FileSeek( m_hDiskCacheWriteFile, 0, FILE_END );
|
|
}
|
|
|
|
unsigned int centralDirStart = stream.Tell() - zipOffsetInStream;
|
|
if ( m_AlignmentSize )
|
|
{
|
|
// align the central directory starting position
|
|
unsigned int newDirStart = AlignValue( centralDirStart, m_AlignmentSize );
|
|
int padLength = newDirStart - centralDirStart;
|
|
if ( padLength )
|
|
{
|
|
stream.Put( pPaddingBuffer, padLength );
|
|
centralDirStart = newDirStart;
|
|
}
|
|
}
|
|
|
|
int realNumFiles = 0;
|
|
for ( i = m_Files.FirstInorder(); i != m_Files.InvalidIndex(); i = m_Files.NextInorder( i ) )
|
|
{
|
|
CZipEntry *e = &m_Files[i];
|
|
Assert( e );
|
|
|
|
if ( e->m_nCompressedSize > 0 && e->m_pData != NULL )
|
|
{
|
|
ZIP_FileHeader hdr = { 0 };
|
|
hdr.signature = PKID( 1, 2 );
|
|
hdr.versionMadeBy = 20; // This is the version that the winzip that I have writes.
|
|
hdr.versionNeededToExtract = 10; // No special features or even compression here, set to 1.0
|
|
#ifdef ZIP_SUPPORT_LZMA_ENCODE
|
|
if ( e->m_eCompressionType == IZip::eCompressionType_LZMA )
|
|
{
|
|
// Per ZIP spec 5.8.8
|
|
hdr.versionNeededToExtract = 63;
|
|
}
|
|
#endif
|
|
hdr.flags = 0;
|
|
hdr.compressionMethod = e->m_eCompressionType;
|
|
hdr.lastModifiedTime = 0;
|
|
hdr.lastModifiedDate = 0;
|
|
hdr.crc32 = e->m_ZipCRC;
|
|
|
|
hdr.compressedSize = e->m_nCompressedSize;
|
|
hdr.uncompressedSize = e->m_nUncompressedSize;
|
|
hdr.fileNameLength = strlen( e->m_Name.String() );
|
|
hdr.extraFieldLength = CalculatePadding( hdr.fileNameLength, e->m_ZipOffset );
|
|
hdr.fileCommentLength = 0;
|
|
hdr.diskNumberStart = 0;
|
|
hdr.internalFileAttribs = 0;
|
|
hdr.externalFileAttribs = 0; // This is usually something, but zero is OK as if the input came from stdin
|
|
hdr.relativeOffsetOfLocalHeader = e->m_ZipOffset;
|
|
int extraFieldLength = hdr.extraFieldLength;
|
|
|
|
// Swap the header in place
|
|
m_Swap.SwapFieldsToTargetEndian( &hdr );
|
|
stream.Put( &hdr, sizeof( hdr ) );
|
|
stream.Put( e->m_Name.String(), strlen( e->m_Name.String() ) );
|
|
if ( m_bCompatibleFormat )
|
|
{
|
|
stream.Put( pPaddingBuffer, extraFieldLength );
|
|
}
|
|
|
|
realNumFiles++;
|
|
|
|
if ( m_hDiskCacheWriteFile != INVALID_HANDLE_VALUE )
|
|
{
|
|
// clear out temp hackery
|
|
e->m_pData = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
unsigned int centralDirEnd = stream.Tell() - zipOffsetInStream;
|
|
if ( m_AlignmentSize )
|
|
{
|
|
// align the central directory starting position
|
|
unsigned int newDirEnd = AlignValue( centralDirEnd, m_AlignmentSize );
|
|
int padLength = newDirEnd - centralDirEnd;
|
|
if ( padLength )
|
|
{
|
|
stream.Put( pPaddingBuffer, padLength );
|
|
centralDirEnd = newDirEnd;
|
|
}
|
|
}
|
|
|
|
ZIP_EndOfCentralDirRecord rec = { 0 };
|
|
rec.signature = PKID( 5, 6 );
|
|
rec.numberOfThisDisk = 0;
|
|
rec.numberOfTheDiskWithStartOfCentralDirectory = 0;
|
|
rec.nCentralDirectoryEntries_ThisDisk = realNumFiles;
|
|
rec.nCentralDirectoryEntries_Total = realNumFiles;
|
|
rec.centralDirectorySize = centralDirEnd - centralDirStart;
|
|
rec.startOfCentralDirOffset = centralDirStart;
|
|
|
|
char commentString[128];
|
|
int commentLength = MakeXZipCommentString( commentString );
|
|
rec.commentLength = commentLength;
|
|
|
|
// Swap the header in place
|
|
m_Swap.SwapFieldsToTargetEndian( &rec );
|
|
stream.Put( &rec, sizeof( rec ) );
|
|
stream.Put( commentString, commentLength );
|
|
|
|
if ( pPaddingBuffer )
|
|
{
|
|
free( pPaddingBuffer );
|
|
}
|
|
}
|
|
|
|
class CZip : public IZip
|
|
{
|
|
public:
|
|
CZip( const char *pDiskCacheWritePath, bool bSortByName );
|
|
virtual ~CZip();
|
|
|
|
virtual void Reset() OVERRIDE;
|
|
|
|
// Add a single file to a zip - maintains the zip's previous alignment state
|
|
virtual void AddFileToZip( const char *relativename, const char *fullpath, eCompressionType compressionType ) OVERRIDE;
|
|
|
|
// Whether a file is contained in a zip - maintains alignment
|
|
virtual bool FileExistsInZip( const char *pRelativeName ) OVERRIDE;
|
|
|
|
// Reads a file from the zip - maintains alignement
|
|
virtual bool ReadFileFromZip( const char *pRelativeName, bool bTextMode, CUtlBuffer &buf ) OVERRIDE;
|
|
virtual bool ReadFileFromZip( HANDLE hZipFile, const char *relativename, bool bTextMode, CUtlBuffer &buf ) OVERRIDE;
|
|
|
|
// Removes a single file from the zip - maintains alignment
|
|
virtual void RemoveFileFromZip( const char *relativename ) OVERRIDE;
|
|
|
|
// Gets next filename in zip, for walking the directory - maintains alignment
|
|
virtual int GetNextFilename( int id, char *pBuffer, int bufferSize, int &fileSize ) OVERRIDE;
|
|
|
|
// Prints the zip's contents - maintains alignment
|
|
virtual void PrintDirectory( void ) OVERRIDE;
|
|
|
|
// Estimate the size of the Zip (including header, padding, etc.)
|
|
virtual unsigned int EstimateSize( void ) OVERRIDE;
|
|
|
|
// Add buffer to zip as a file with given name - uses current alignment size, default 0 (no alignment)
|
|
virtual void AddBufferToZip( const char *relativename, void *data, int length,
|
|
bool bTextMode, eCompressionType compressionType ) OVERRIDE;
|
|
|
|
// Writes out zip file to a buffer - uses current alignment size
|
|
// (set by file's previous alignment, or a call to ForceAlignment)
|
|
virtual void SaveToBuffer( CUtlBuffer& outbuf ) OVERRIDE;
|
|
|
|
// Writes out zip file to a filestream - uses current alignment size
|
|
// (set by file's previous alignment, or a call to ForceAlignment)
|
|
virtual void SaveToDisk( FILE *fout ) OVERRIDE;
|
|
virtual void SaveToDisk( HANDLE hOutFile ) OVERRIDE;
|
|
|
|
// Reads a zip file from a buffer into memory - sets current alignment size to
|
|
// the file's alignment size, unless overridden by a ForceAlignment call)
|
|
virtual void ParseFromBuffer( void *buffer, int bufferlength ) OVERRIDE;
|
|
virtual HANDLE ParseFromDisk( const char *pFilename ) OVERRIDE;
|
|
|
|
// Forces a specific alignment size for all subsequent file operations, overriding files' previous alignment size.
|
|
// Return to using files' individual alignment sizes by passing FALSE.
|
|
virtual void ForceAlignment( bool aligned, bool bCompatibleFormat, unsigned int alignmentSize ) OVERRIDE;
|
|
|
|
// Sets the endianess of the zip
|
|
virtual void SetBigEndian( bool bigEndian ) OVERRIDE;
|
|
virtual void ActivateByteSwapping( bool bActivate ) OVERRIDE;
|
|
|
|
virtual unsigned int GetAlignment() OVERRIDE;
|
|
|
|
private:
|
|
CZipFile m_ZipFile;
|
|
};
|
|
|
|
static CUtlLinkedList< CZip* > g_ZipUtils;
|
|
|
|
IZip *IZip::CreateZip( const char *pDiskCacheWritePath, bool bSortByName )
|
|
{
|
|
CZip *pZip = new CZip( pDiskCacheWritePath, bSortByName );
|
|
g_ZipUtils.AddToTail( pZip );
|
|
|
|
return pZip;
|
|
}
|
|
|
|
void IZip::ReleaseZip( IZip *pZip )
|
|
{
|
|
g_ZipUtils.FindAndRemove( (CZip *)pZip );
|
|
|
|
delete ((CZip *)pZip);
|
|
}
|
|
|
|
CZip::CZip( const char *pDiskCacheWritePath, bool bSortByName ) : m_ZipFile( pDiskCacheWritePath, bSortByName )
|
|
{
|
|
m_ZipFile.Reset();
|
|
}
|
|
|
|
CZip::~CZip()
|
|
{
|
|
}
|
|
|
|
void CZip::SetBigEndian( bool bigEndian )
|
|
{
|
|
m_ZipFile.SetBigEndian( bigEndian );
|
|
}
|
|
|
|
void CZip::ActivateByteSwapping( bool bActivate )
|
|
{
|
|
m_ZipFile.ActivateByteSwapping( bActivate );
|
|
}
|
|
|
|
void CZip::AddFileToZip( const char *relativename, const char *fullpath, eCompressionType compressionType )
|
|
{
|
|
m_ZipFile.AddFileToZip( relativename, fullpath, compressionType );
|
|
}
|
|
|
|
bool CZip::FileExistsInZip( const char *pRelativeName )
|
|
{
|
|
return m_ZipFile.FileExistsInZip( pRelativeName );
|
|
}
|
|
|
|
bool CZip::ReadFileFromZip( const char *pRelativeName, bool bTextMode, CUtlBuffer &buf )
|
|
{
|
|
return m_ZipFile.ReadFileFromZip( pRelativeName, bTextMode, buf );
|
|
}
|
|
|
|
bool CZip::ReadFileFromZip( HANDLE hZipFile, const char *pRelativeName, bool bTextMode, CUtlBuffer &buf )
|
|
{
|
|
return m_ZipFile.ReadFileFromZip( hZipFile, pRelativeName, bTextMode, buf );
|
|
}
|
|
|
|
void CZip::RemoveFileFromZip( const char *relativename )
|
|
{
|
|
m_ZipFile.RemoveFileFromZip( relativename );
|
|
}
|
|
|
|
int CZip::GetNextFilename( int id, char *pBuffer, int bufferSize, int &fileSize )
|
|
{
|
|
return m_ZipFile.GetNextFilename( id, pBuffer, bufferSize, fileSize );
|
|
}
|
|
|
|
void CZip::PrintDirectory( void )
|
|
{
|
|
m_ZipFile.PrintDirectory();
|
|
}
|
|
|
|
void CZip::Reset()
|
|
{
|
|
m_ZipFile.Reset();
|
|
}
|
|
|
|
unsigned int CZip::EstimateSize( void )
|
|
{
|
|
return m_ZipFile.CalculateSize();
|
|
}
|
|
|
|
// Add buffer to zip as a file with given name
|
|
void CZip::AddBufferToZip( const char *relativename, void *data, int length, bool bTextMode, eCompressionType compressionType )
|
|
{
|
|
m_ZipFile.AddBufferToZip( relativename, data, length, bTextMode, compressionType );
|
|
}
|
|
|
|
void CZip::SaveToBuffer( CUtlBuffer& outbuf )
|
|
{
|
|
m_ZipFile.SaveToBuffer( outbuf );
|
|
}
|
|
|
|
void CZip::SaveToDisk( FILE *fout )
|
|
{
|
|
m_ZipFile.SaveToDisk( fout );
|
|
}
|
|
|
|
void CZip::SaveToDisk( HANDLE hOutFile )
|
|
{
|
|
m_ZipFile.SaveToDisk( hOutFile );
|
|
}
|
|
|
|
void CZip::ParseFromBuffer( void *buffer, int bufferlength )
|
|
{
|
|
m_ZipFile.Reset();
|
|
m_ZipFile.ParseFromBuffer( buffer, bufferlength );
|
|
}
|
|
|
|
HANDLE CZip::ParseFromDisk( const char *pFilename )
|
|
{
|
|
m_ZipFile.Reset();
|
|
return m_ZipFile.ParseFromDisk( pFilename );
|
|
}
|
|
|
|
void CZip::ForceAlignment( bool aligned, bool bCompatibleFormat, unsigned int alignmentSize )
|
|
{
|
|
m_ZipFile.ForceAlignment( aligned, bCompatibleFormat, alignmentSize );
|
|
}
|
|
|
|
unsigned int CZip::GetAlignment()
|
|
{
|
|
return m_ZipFile.GetAlignment();
|
|
}
|
|
|