resource.c

winNT技术操作系统,国外开放的原代码和LIUX一样

 found_type:
    nameInfo = (NE_NAMEINFO *)(typeInfo + 1);

    if (HIWORD(resid) != 0)  /* named resource */
    {
        BYTE len = strlen( resid );
        for (count = typeInfo->count; count > 0; count--, nameInfo++)
        {
            BYTE *p = resTab + nameInfo->id;
            if (nameInfo->id & 0x8000) continue;
            if ((*p == len) && !strncasecmp( (char*)p+1, resid, len )) goto found_name;
        }
    }
    else  /* numeric resource id */
    {
        WORD id = LOWORD(resid) | 0x8000;
        for (count = typeInfo->count; count > 0; count--, nameInfo++)
            if (nameInfo->id == id) goto found_name;
    }
    TRACE("No resid entry found for %p\n", typeid );
    HeapFree( GetProcessHeap(), 0, resTab );
    return FALSE;

 found_name:
    /* Return resource data */
    if ( resLen ) *resLen = nameInfo->length << *(WORD *)resTab;
    if ( resOff ) *resOff = nameInfo->offset << *(WORD *)resTab;

    HeapFree( GetProcessHeap(), 0, resTab );
    return TRUE;
}
#endif /* ! __REACTOS__ */

/***********************************************************************
 *           load_pe_resource         [internal]
 */
static BOOL find_pe_resource( HFILE lzfd, LPCSTR typeid, LPCSTR resid,
                                DWORD *resLen, DWORD *resOff )
{
    IMAGE_NT_HEADERS pehd;
    DWORD pehdoffset;
    PIMAGE_DATA_DIRECTORY resDataDir;
    PIMAGE_SECTION_HEADER sections;
    LPBYTE resSection;
    DWORD resSectionSize;
    const void *resDir;
    const IMAGE_RESOURCE_DIRECTORY *resPtr;
    const IMAGE_RESOURCE_DATA_ENTRY *resData;
    int i, nSections;
    BOOL ret = FALSE;

    /* Read in PE header */
    pehdoffset = LZSeek( lzfd, 0, SEEK_CUR );
    if ( sizeof(pehd) != LZRead( lzfd, (LPSTR)&pehd, sizeof(pehd) ) ) return 0;

    resDataDir = pehd.OptionalHeader.DataDirectory+IMAGE_FILE_RESOURCE_DIRECTORY;
    if ( !resDataDir->Size )
    {
        TRACE("No resources in PE dll\n" );
        return FALSE;
    }

    /* Read in section table */
    nSections = pehd.FileHeader.NumberOfSections;
    sections = HeapAlloc( GetProcessHeap(), 0,
                          nSections * sizeof(IMAGE_SECTION_HEADER) );
    if ( !sections ) return FALSE;

    LZSeek( lzfd, pehdoffset +
                    sizeof(DWORD) + /* Signature */
                    sizeof(IMAGE_FILE_HEADER) +
                    pehd.FileHeader.SizeOfOptionalHeader, SEEK_SET );

    if ( nSections * sizeof(IMAGE_SECTION_HEADER) !=
         LZRead( lzfd, (LPSTR)sections, nSections * sizeof(IMAGE_SECTION_HEADER) ) )
    {
        HeapFree( GetProcessHeap(), 0, sections );
        return FALSE;
    }

    /* Find resource section */
    for ( i = 0; i < nSections; i++ )
        if (    resDataDir->VirtualAddress >= sections[i].VirtualAddress
             && resDataDir->VirtualAddress <  sections[i].VirtualAddress +
                                              sections[i].SizeOfRawData )
            break;

    if ( i == nSections )
    {
        HeapFree( GetProcessHeap(), 0, sections );
        TRACE("Couldn't find resource section\n" );
        return FALSE;
    }

    /* Read in resource section */
    resSectionSize = sections[i].SizeOfRawData;
    resSection = HeapAlloc( GetProcessHeap(), 0, resSectionSize );
    if ( !resSection )
    {
        HeapFree( GetProcessHeap(), 0, sections );
        return FALSE;
    }

    LZSeek( lzfd, sections[i].PointerToRawData, SEEK_SET );
    if ( resSectionSize != LZRead( lzfd, (char*)resSection, resSectionSize ) ) goto done;

    /* Find resource */
    resDir = resSection + (resDataDir->VirtualAddress - sections[i].VirtualAddress);

    resPtr = (const IMAGE_RESOURCE_DIRECTORY*)resDir;
    resPtr = find_entry_by_name( resPtr, typeid, resDir );
    if ( !resPtr )
    {
        TRACE("No typeid entry found for %p\n", typeid );
        goto done;
    }
    resPtr = find_entry_by_name( resPtr, resid, resDir );
    if ( !resPtr )
    {
        TRACE("No resid entry found for %p\n", resid );
        goto done;
    }
    resPtr = find_entry_default( resPtr, resDir );
    if ( !resPtr )
    {
        TRACE("No default language entry found for %p\n", resid );
        goto done;
    }

    /* Find resource data section */
    resData = (const IMAGE_RESOURCE_DATA_ENTRY*)resPtr;
    for ( i = 0; i < nSections; i++ )
        if (    resData->OffsetToData >= sections[i].VirtualAddress
             && resData->OffsetToData <  sections[i].VirtualAddress +
                                         sections[i].SizeOfRawData )
            break;

    if ( i == nSections )
    {
        TRACE("Couldn't find resource data section\n" );
        goto done;
    }

    /* Return resource data */
    if ( resLen ) *resLen = resData->Size;
    if ( resOff ) *resOff = resData->OffsetToData - sections[i].VirtualAddress
                            + sections[i].PointerToRawData;
    ret = TRUE;

 done:
    HeapFree( GetProcessHeap(), 0, resSection );
    HeapFree( GetProcessHeap(), 0, sections );
    return ret;
}


/*************************************************************************
 * GetFileResourceSize                     [VER.2]
 */
DWORD WINAPI GetFileResourceSize16( LPCSTR lpszFileName, LPCSTR lpszResType,
                                    LPCSTR lpszResId, LPDWORD lpdwFileOffset )
{
    BOOL retv = FALSE;
    HFILE lzfd;
    OFSTRUCT ofs;
    DWORD reslen;

    TRACE("(%s,type=0x%lx,id=0x%lx,off=%p)\n",
                debugstr_a(lpszFileName), (LONG)lpszResType, (LONG)lpszResId,
                lpszResId );

    lzfd = LZOpenFileA( (LPSTR)lpszFileName, &ofs, OF_READ );
    if ( lzfd < 0 ) return 0;

    switch ( read_xx_header( lzfd ) )
    {
    case IMAGE_OS2_SIGNATURE:
#ifdef __REACTOS__
        ERR("OS2 Images not supported under ReactOS at this time.");
#else
        retv = find_ne_resource( lzfd, lpszResType, lpszResId,
                                 &reslen, lpdwFileOffset );
#endif
        break;

    case IMAGE_NT_SIGNATURE:
        retv = find_pe_resource( lzfd, lpszResType, lpszResId,
                                 &reslen, lpdwFileOffset );
        break;
    }

    LZClose( lzfd );
    return retv? reslen : 0;
}


/*************************************************************************
 * GetFileResource                         [VER.3]
 */
DWORD WINAPI GetFileResource16( LPCSTR lpszFileName, LPCSTR lpszResType,
                                LPCSTR lpszResId, DWORD dwFileOffset,
                                DWORD dwResLen, LPVOID lpvData )
{
    BOOL retv = FALSE;
    HFILE lzfd;
    OFSTRUCT ofs;
    DWORD reslen = dwResLen;

    TRACE("(%s,type=%p,id=%p,off=%ld,len=%ld,data=%p)\n",
		debugstr_a(lpszFileName), lpszResType, lpszResId,
                dwFileOffset, dwResLen, lpvData );

    lzfd = LZOpenFileA( (LPSTR)lpszFileName, &ofs, OF_READ );
    if ( lzfd < 0 ) return 0;

    if ( !dwFileOffset )
    {
        switch ( read_xx_header( lzfd ) )
        {
        case IMAGE_OS2_SIGNATURE:
#ifdef __REACTOS__
            ERR("OS2 Images not supported under ReactOS at this time.");
#else
            retv = find_ne_resource( lzfd, lpszResType, lpszResId,
                                     &reslen, &dwFileOffset );
#endif
            break;

        case IMAGE_NT_SIGNATURE:
            retv = find_pe_resource( lzfd, lpszResType, lpszResId,
                                     &reslen, &dwFileOffset );
            break;
        }

        if ( !retv )
        {
            LZClose( lzfd );
            return 0;
        }
    }

    LZSeek( lzfd, dwFileOffset, SEEK_SET );
    reslen = LZRead( lzfd, lpvData, min( reslen, dwResLen ) );
    LZClose( lzfd );

    return reslen;
}