dlls/version/resource.c

   1 /*
   2  * Implementation of VERSION.DLL - Resource Access routines
   3  *
   4  * Copyright 1996,1997 Marcus Meissner
   5  * Copyright 1997 David Cuthbert
   6  * Copyright 1999 Ulrich Weigand
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #include "config.h"
  24
  25 #include <stdarg.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <sys/types.h>
  30 #ifdef HAVE_UNISTD_H
  31 # include <unistd.h>
  32 #endif
  33
  34 #define NONAMELESSUNION
  35 #define NONAMELESSSTRUCT
  36 #include "windef.h"
  37 #include "winbase.h"
  38 #include "lzexpand.h"
  39 #include "winver.h"
  40
  41 #include "wine/unicode.h"
  42 #include "wine/winbase16.h"
  43
  44 #include "wine/debug.h"
  45
  46 WINE_DEFAULT_DEBUG_CHANNEL(ver);
  47
  48
  49 /**********************************************************************
  50  *  find_entry_by_id
  51  *
  52  * Find an entry by id in a resource directory
  53  * Copied from loader/pe_resource.c
  54  */
  55 static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_id( const IMAGE_RESOURCE_DIRECTORY *dir,
  56                                                          WORD id, const void *root )
  57 {
  58     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
  59     int min, max, pos;
  60
  61     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
  62     min = dir->NumberOfNamedEntries;
  63     max = min + dir->NumberOfIdEntries - 1;
  64     while (min <= max)
  65     {
  66         pos = (min + max) / 2;
  67         if (entry[pos].u1.s2.Id == id)
  68             return (const IMAGE_RESOURCE_DIRECTORY *)((const char *)root + entry[pos].u2.s3.OffsetToDirectory);
  69         if (entry[pos].u1.s2.Id > id) max = pos - 1;
  70         else min = pos + 1;
  71     }
  72     return NULL;
  73 }
  74
  75
  76 /**********************************************************************
  77  *  find_entry_default
  78  *
  79  * Find a default entry in a resource directory
  80  * Copied from loader/pe_resource.c
  81  */
  82 static const IMAGE_RESOURCE_DIRECTORY *find_entry_default( const IMAGE_RESOURCE_DIRECTORY *dir,
  83                                                            const void *root )
  84 {
  85     const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
  86
  87     entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
  88     return (const IMAGE_RESOURCE_DIRECTORY *)((const char *)root + entry->u2.s3.OffsetToDirectory);
  89 }
  90
  91
  92 /***********************************************************************
  93  *           read_xx_header         [internal]
  94  */
  95 static int read_xx_header( HFILE lzfd )
  96 {
  97     IMAGE_DOS_HEADER mzh;
  98     char magic[3];
  99
 100     LZSeek( lzfd, 0, SEEK_SET );
 101     if ( sizeof(mzh) != LZRead( lzfd, (LPSTR)&mzh, sizeof(mzh) ) )
 102         return 0;
 103     if ( mzh.e_magic != IMAGE_DOS_SIGNATURE )
 104         return 0;
 105
 106     LZSeek( lzfd, mzh.e_lfanew, SEEK_SET );
 107     if ( 2 != LZRead( lzfd, magic, 2 ) )
 108         return 0;
 109
 110     LZSeek( lzfd, mzh.e_lfanew, SEEK_SET );
 111
 112     if ( magic[0] == 'N' && magic[1] == 'E' )
 113         return IMAGE_OS2_SIGNATURE;
 114     if ( magic[0] == 'P' && magic[1] == 'E' )
 115         return IMAGE_NT_SIGNATURE;
 116
 117     magic[2] = '\0';
 118     WARN("Can't handle %s files.\n", magic );
 119     return 0;
 120 }
 121
 122 /***********************************************************************
 123  *           find_ne_resource         [internal]
 124  */
 125 static BOOL find_ne_resource( HFILE lzfd, DWORD *resLen, DWORD *resOff )
 126 {
 127     const WORD typeid = VS_FILE_INFO | 0x8000;
 128     const WORD resid = VS_VERSION_INFO | 0x8000;
 129     IMAGE_OS2_HEADER nehd;
 130     NE_TYPEINFO *typeInfo;
 131     NE_NAMEINFO *nameInfo;
 132     DWORD nehdoffset;
 133     LPBYTE resTab;
 134     DWORD resTabSize;
 135     int count;
 136
 137     /* Read in NE header */
 138     nehdoffset = LZSeek( lzfd, 0, SEEK_CUR );
 139     if ( sizeof(nehd) != LZRead( lzfd, (LPSTR)&nehd, sizeof(nehd) ) ) return 0;
 140
 141     resTabSize = nehd.ne_restab - nehd.ne_rsrctab;
 142     if ( !resTabSize )
 143     {
 144         TRACE("No resources in NE dll\n" );
 145         return FALSE;
 146     }
 147
 148     /* Read in resource table */
 149     resTab = HeapAlloc( GetProcessHeap(), 0, resTabSize );
 150     if ( !resTab ) return FALSE;
 151
 152     LZSeek( lzfd, nehd.ne_rsrctab + nehdoffset, SEEK_SET );
 153     if ( resTabSize != LZRead( lzfd, (char*)resTab, resTabSize ) )
 154     {
 155         HeapFree( GetProcessHeap(), 0, resTab );
 156         return FALSE;
 157     }
 158
 159     /* Find resource */
 160     typeInfo = (NE_TYPEINFO *)(resTab + 2);
 161     while (typeInfo->type_id)
 162     {
 163         if (typeInfo->type_id == typeid) goto found_type;
 164         typeInfo = (NE_TYPEINFO *)((char *)(typeInfo + 1) +
 165                                    typeInfo->count * sizeof(NE_NAMEINFO));
 166     }
 167     TRACE("No typeid entry found\n" );
 168     HeapFree( GetProcessHeap(), 0, resTab );
 169     return FALSE;
 170
 171  found_type:
 172     nameInfo = (NE_NAMEINFO *)(typeInfo + 1);
 173
 174     for (count = typeInfo->count; count > 0; count--, nameInfo++)
 175         if (nameInfo->id == resid) goto found_name;
 176
 177     TRACE("No resid entry found\n" );
 178     HeapFree( GetProcessHeap(), 0, resTab );
 179     return FALSE;
 180
 181  found_name:
 182     /* Return resource data */
 183     if ( resLen ) *resLen = nameInfo->length << *(WORD *)resTab;
 184     if ( resOff ) *resOff = nameInfo->offset << *(WORD *)resTab;
 185
 186     HeapFree( GetProcessHeap(), 0, resTab );
 187     return TRUE;
 188 }
 189
 190 /***********************************************************************
 191  *           find_pe_resource         [internal]
 192  */
 193 static BOOL find_pe_resource( HFILE lzfd, DWORD *resLen, DWORD *resOff )
 194 {
 195     IMAGE_NT_HEADERS pehd;
 196     DWORD pehdoffset;
 197     PIMAGE_DATA_DIRECTORY resDataDir;
 198     PIMAGE_SECTION_HEADER sections;
 199     LPBYTE resSection;
 200     DWORD resSectionSize;
 201     const void *resDir;
 202     const IMAGE_RESOURCE_DIRECTORY *resPtr;
 203     const IMAGE_RESOURCE_DATA_ENTRY *resData;
 204     int i, nSections;
 205     BOOL ret = FALSE;
 206
 207     /* Read in PE header */
 208     pehdoffset = LZSeek( lzfd, 0, SEEK_CUR );
 209     if ( sizeof(pehd) != LZRead( lzfd, (LPSTR)&pehd, sizeof(pehd) ) ) return 0;
 210
 211     resDataDir = pehd.OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_RESOURCE;
 212     if ( !resDataDir->Size )
 213     {
 214         TRACE("No resources in PE dll\n" );
 215         return FALSE;
 216     }
 217
 218     /* Read in section table */
 219     nSections = pehd.FileHeader.NumberOfSections;
 220     sections = HeapAlloc( GetProcessHeap(), 0,
 221                           nSections * sizeof(IMAGE_SECTION_HEADER) );
 222     if ( !sections ) return FALSE;
 223
 224     LZSeek( lzfd, pehdoffset +
 225                     sizeof(DWORD) + /* Signature */
 226                     sizeof(IMAGE_FILE_HEADER) +
 227                     pehd.FileHeader.SizeOfOptionalHeader, SEEK_SET );
 228
 229     if ( nSections * sizeof(IMAGE_SECTION_HEADER) !=
 230          LZRead( lzfd, (LPSTR)sections, nSections * sizeof(IMAGE_SECTION_HEADER) ) )
 231     {
 232         HeapFree( GetProcessHeap(), 0, sections );
 233         return FALSE;
 234     }
 235
 236     /* Find resource section */
 237     for ( i = 0; i < nSections; i++ )
 238         if (    resDataDir->VirtualAddress >= sections[i].VirtualAddress
 239              && resDataDir->VirtualAddress <  sections[i].VirtualAddress +
 240                                               sections[i].SizeOfRawData )
 241             break;
 242
 243     if ( i == nSections )
 244     {
 245         HeapFree( GetProcessHeap(), 0, sections );
 246         TRACE("Couldn't find resource section\n" );
 247         return FALSE;
 248     }
 249
 250     /* Read in resource section */
 251     resSectionSize = sections[i].SizeOfRawData;
 252     resSection = HeapAlloc( GetProcessHeap(), 0, resSectionSize );
 253     if ( !resSection )
 254     {
 255         HeapFree( GetProcessHeap(), 0, sections );
 256         return FALSE;
 257     }
 258
 259     LZSeek( lzfd, sections[i].PointerToRawData, SEEK_SET );
 260     if ( resSectionSize != LZRead( lzfd, (char*)resSection, resSectionSize ) ) goto done;
 261
 262     /* Find resource */
 263     resDir = resSection + (resDataDir->VirtualAddress - sections[i].VirtualAddress);
 264
 265     resPtr = resDir;
 266     resPtr = find_entry_by_id( resPtr, VS_FILE_INFO, resDir );
 267     if ( !resPtr )
 268     {
 269         TRACE("No typeid entry found\n" );
 270         goto done;
 271     }
 272     resPtr = find_entry_by_id( resPtr, VS_VERSION_INFO, resDir );
 273     if ( !resPtr )
 274     {
 275         TRACE("No resid entry found\n" );
 276         goto done;
 277     }
 278     resPtr = find_entry_default( resPtr, resDir );
 279     if ( !resPtr )
 280     {
 281         TRACE("No default language entry found\n" );
 282         goto done;
 283     }
 284
 285     /* Find resource data section */
 286     resData = (const IMAGE_RESOURCE_DATA_ENTRY*)resPtr;
 287     for ( i = 0; i < nSections; i++ )
 288         if (    resData->OffsetToData >= sections[i].VirtualAddress
 289              && resData->OffsetToData <  sections[i].VirtualAddress +
 290                                          sections[i].SizeOfRawData )
 291             break;
 292
 293     if ( i == nSections )
 294     {
 295         TRACE("Couldn't find resource data section\n" );
 296         goto done;
 297     }
 298
 299     /* Return resource data */
 300     if ( resLen ) *resLen = resData->Size;
 301     if ( resOff ) *resOff = resData->OffsetToData - sections[i].VirtualAddress
 302                             + sections[i].PointerToRawData;
 303     ret = TRUE;
 304
 305  done:
 306     HeapFree( GetProcessHeap(), 0, resSection );
 307     HeapFree( GetProcessHeap(), 0, sections );
 308     return ret;
 309 }
 310
 311
 312 /***********************************************************************
 313  *           find_version_resource         [internal]
 314  */
 315 DWORD find_version_resource( HFILE lzfd, DWORD *reslen, DWORD *offset )
 316 {
 317     DWORD magic = read_xx_header( lzfd );
 318
 319     switch (magic)
 320     {
 321     case IMAGE_OS2_SIGNATURE:
 322         if (!find_ne_resource( lzfd, reslen, offset )) magic = 0;
 323         break;
 324     case IMAGE_NT_SIGNATURE:
 325         if (!find_pe_resource( lzfd, reslen, offset )) magic = 0;
 326         break;
 327     }
 328     return magic;
 329 }