2 * Implementation of VERSION.DLL - Resource Access routines
4 * Copyright 1996,1997 Marcus Meissner
5 * Copyright 1997 David Cuthbert
6 * Copyright 1999 Ulrich Weigand
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.
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.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 #include <sys/types.h>
35 #include "wine/unicode.h"
36 #include "wine/winbase16.h"
37 #include "wine/winuser16.h"
40 #include "wine/debug.h"
42 WINE_DEFAULT_DEBUG_CHANNEL(ver);
45 /**********************************************************************
48 * Find an entry by id in a resource directory
49 * Copied from loader/pe_resource.c
51 static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_id( const IMAGE_RESOURCE_DIRECTORY *dir,
52 WORD id, const void *root )
54 const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
57 entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
58 min = dir->NumberOfNamedEntries;
59 max = min + dir->NumberOfIdEntries - 1;
62 pos = (min + max) / 2;
63 if (entry[pos].u1.s2.Id == id)
64 return (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry[pos].u2.s3.OffsetToDirectory);
65 if (entry[pos].u1.s2.Id > id) max = pos - 1;
72 /**********************************************************************
75 * Find a default entry in a resource directory
76 * Copied from loader/pe_resource.c
78 static const IMAGE_RESOURCE_DIRECTORY *find_entry_default( const IMAGE_RESOURCE_DIRECTORY *dir,
81 const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
83 entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
84 return (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry->u2.s3.OffsetToDirectory);
88 /**********************************************************************
91 * Find an entry by name in a resource directory
92 * Copied from loader/pe_resource.c
94 static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_name( const IMAGE_RESOURCE_DIRECTORY *dir,
95 LPCSTR name, const void *root )
97 const IMAGE_RESOURCE_DIRECTORY *ret = NULL;
101 if (!HIWORD(name)) return find_entry_by_id( dir, LOWORD(name), root );
104 return find_entry_by_id( dir, atoi(name+1), root );
107 namelen = MultiByteToWideChar( CP_ACP, 0, name, -1, NULL, 0 );
108 if ((nameW = HeapAlloc( GetProcessHeap(), 0, namelen * sizeof(WCHAR) )))
110 const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
111 const IMAGE_RESOURCE_DIR_STRING_U *str;
112 int min, max, res, pos;
114 MultiByteToWideChar( CP_ACP, 0, name, -1, nameW, namelen );
115 namelen--; /* remove terminating null */
116 entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
118 max = dir->NumberOfNamedEntries - 1;
121 pos = (min + max) / 2;
122 str = (IMAGE_RESOURCE_DIR_STRING_U *)((char *)root + entry[pos].u1.s1.NameOffset);
123 res = strncmpiW( nameW, str->NameString, str->Length );
124 if (!res && namelen == str->Length)
126 ret = (IMAGE_RESOURCE_DIRECTORY *)((char *)root + entry[pos].u2.s3.OffsetToDirectory);
129 if (res < 0) max = pos - 1;
132 HeapFree( GetProcessHeap(), 0, nameW );
138 /***********************************************************************
139 * read_xx_header [internal]
141 static int read_xx_header( HFILE lzfd )
143 IMAGE_DOS_HEADER mzh;
146 LZSeek( lzfd, 0, SEEK_SET );
147 if ( sizeof(mzh) != LZRead( lzfd, &mzh, sizeof(mzh) ) )
149 if ( mzh.e_magic != IMAGE_DOS_SIGNATURE )
152 LZSeek( lzfd, mzh.e_lfanew, SEEK_SET );
153 if ( 2 != LZRead( lzfd, magic, 2 ) )
156 LZSeek( lzfd, mzh.e_lfanew, SEEK_SET );
158 if ( magic[0] == 'N' && magic[1] == 'E' )
159 return IMAGE_OS2_SIGNATURE;
160 if ( magic[0] == 'P' && magic[1] == 'E' )
161 return IMAGE_NT_SIGNATURE;
164 WARN("Can't handle %s files.\n", magic );
168 /***********************************************************************
169 * load_ne_resource [internal]
171 static BOOL find_ne_resource( HFILE lzfd, LPCSTR typeid, LPCSTR resid,
172 DWORD *resLen, DWORD *resOff )
174 IMAGE_OS2_HEADER nehd;
175 NE_TYPEINFO *typeInfo;
176 NE_NAMEINFO *nameInfo;
182 /* Read in NE header */
183 nehdoffset = LZSeek( lzfd, 0, SEEK_CUR );
184 if ( sizeof(nehd) != LZRead( lzfd, &nehd, sizeof(nehd) ) ) return 0;
186 resTabSize = nehd.ne_restab - nehd.ne_rsrctab;
189 TRACE("No resources in NE dll\n" );
193 /* Read in resource table */
194 resTab = HeapAlloc( GetProcessHeap(), 0, resTabSize );
195 if ( !resTab ) return FALSE;
197 LZSeek( lzfd, nehd.ne_rsrctab + nehdoffset, SEEK_SET );
198 if ( resTabSize != LZRead( lzfd, resTab, resTabSize ) )
200 HeapFree( GetProcessHeap(), 0, resTab );
205 typeInfo = (NE_TYPEINFO *)(resTab + 2);
207 if (HIWORD(typeid) != 0) /* named type */
209 BYTE len = strlen( typeid );
210 while (typeInfo->type_id)
212 if (!(typeInfo->type_id & 0x8000))
214 BYTE *p = resTab + typeInfo->type_id;
215 if ((*p == len) && !strncasecmp( p+1, typeid, len )) goto found_type;
217 typeInfo = (NE_TYPEINFO *)((char *)(typeInfo + 1) +
218 typeInfo->count * sizeof(NE_NAMEINFO));
221 else /* numeric type id */
223 WORD id = LOWORD(typeid) | 0x8000;
224 while (typeInfo->type_id)
226 if (typeInfo->type_id == id) goto found_type;
227 typeInfo = (NE_TYPEINFO *)((char *)(typeInfo + 1) +
228 typeInfo->count * sizeof(NE_NAMEINFO));
231 TRACE("No typeid entry found for %p\n", typeid );
232 HeapFree( GetProcessHeap(), 0, resTab );
236 nameInfo = (NE_NAMEINFO *)(typeInfo + 1);
238 if (HIWORD(resid) != 0) /* named resource */
240 BYTE len = strlen( resid );
241 for (count = typeInfo->count; count > 0; count--, nameInfo++)
243 BYTE *p = resTab + nameInfo->id;
244 if (nameInfo->id & 0x8000) continue;
245 if ((*p == len) && !strncasecmp( p+1, resid, len )) goto found_name;
248 else /* numeric resource id */
250 WORD id = LOWORD(resid) | 0x8000;
251 for (count = typeInfo->count; count > 0; count--, nameInfo++)
252 if (nameInfo->id == id) goto found_name;
254 TRACE("No resid entry found for %p\n", typeid );
255 HeapFree( GetProcessHeap(), 0, resTab );
259 /* Return resource data */
260 if ( resLen ) *resLen = nameInfo->length << *(WORD *)resTab;
261 if ( resOff ) *resOff = nameInfo->offset << *(WORD *)resTab;
263 HeapFree( GetProcessHeap(), 0, resTab );
267 /***********************************************************************
268 * load_pe_resource [internal]
270 static BOOL find_pe_resource( HFILE lzfd, LPCSTR typeid, LPCSTR resid,
271 DWORD *resLen, DWORD *resOff )
273 IMAGE_NT_HEADERS pehd;
275 PIMAGE_DATA_DIRECTORY resDataDir;
276 PIMAGE_SECTION_HEADER sections;
278 DWORD resSectionSize;
280 const IMAGE_RESOURCE_DIRECTORY *resPtr;
281 const IMAGE_RESOURCE_DATA_ENTRY *resData;
285 /* Read in PE header */
286 pehdoffset = LZSeek( lzfd, 0, SEEK_CUR );
287 if ( sizeof(pehd) != LZRead( lzfd, &pehd, sizeof(pehd) ) ) return 0;
289 resDataDir = pehd.OptionalHeader.DataDirectory+IMAGE_FILE_RESOURCE_DIRECTORY;
290 if ( !resDataDir->Size )
292 TRACE("No resources in PE dll\n" );
296 /* Read in section table */
297 nSections = pehd.FileHeader.NumberOfSections;
298 sections = HeapAlloc( GetProcessHeap(), 0,
299 nSections * sizeof(IMAGE_SECTION_HEADER) );
300 if ( !sections ) return FALSE;
302 LZSeek( lzfd, pehdoffset +
303 sizeof(DWORD) + /* Signature */
304 sizeof(IMAGE_FILE_HEADER) +
305 pehd.FileHeader.SizeOfOptionalHeader, SEEK_SET );
307 if ( nSections * sizeof(IMAGE_SECTION_HEADER) !=
308 LZRead( lzfd, sections, nSections * sizeof(IMAGE_SECTION_HEADER) ) )
310 HeapFree( GetProcessHeap(), 0, sections );
314 /* Find resource section */
315 for ( i = 0; i < nSections; i++ )
316 if ( resDataDir->VirtualAddress >= sections[i].VirtualAddress
317 && resDataDir->VirtualAddress < sections[i].VirtualAddress +
318 sections[i].SizeOfRawData )
321 if ( i == nSections )
323 HeapFree( GetProcessHeap(), 0, sections );
324 TRACE("Couldn't find resource section\n" );
328 /* Read in resource section */
329 resSectionSize = sections[i].SizeOfRawData;
330 resSection = HeapAlloc( GetProcessHeap(), 0, resSectionSize );
333 HeapFree( GetProcessHeap(), 0, sections );
337 LZSeek( lzfd, sections[i].PointerToRawData, SEEK_SET );
338 if ( resSectionSize != LZRead( lzfd, resSection, resSectionSize ) ) goto done;
341 resDir = resSection + (resDataDir->VirtualAddress - sections[i].VirtualAddress);
343 resPtr = (PIMAGE_RESOURCE_DIRECTORY)resDir;
344 resPtr = find_entry_by_name( resPtr, typeid, resDir );
347 TRACE("No typeid entry found for %p\n", typeid );
350 resPtr = find_entry_by_name( resPtr, resid, resDir );
353 TRACE("No resid entry found for %p\n", resid );
356 resPtr = find_entry_default( resPtr, resDir );
359 TRACE("No default language entry found for %p\n", resid );
363 /* Find resource data section */
364 resData = (PIMAGE_RESOURCE_DATA_ENTRY)resPtr;
365 for ( i = 0; i < nSections; i++ )
366 if ( resData->OffsetToData >= sections[i].VirtualAddress
367 && resData->OffsetToData < sections[i].VirtualAddress +
368 sections[i].SizeOfRawData )
371 if ( i == nSections )
373 TRACE("Couldn't find resource data section\n" );
377 /* Return resource data */
378 if ( resLen ) *resLen = resData->Size;
379 if ( resOff ) *resOff = resData->OffsetToData - sections[i].VirtualAddress
380 + sections[i].PointerToRawData;
384 HeapFree( GetProcessHeap(), 0, resSection );
385 HeapFree( GetProcessHeap(), 0, sections );
390 /*************************************************************************
391 * GetFileResourceSize [VER.2]
393 DWORD WINAPI GetFileResourceSize16( LPCSTR lpszFileName, LPCSTR lpszResType,
394 LPCSTR lpszResId, LPDWORD lpdwFileOffset )
401 TRACE("(%s,type=0x%lx,id=0x%lx,off=%p)\n",
402 debugstr_a(lpszFileName), (LONG)lpszResType, (LONG)lpszResId,
405 lzfd = LZOpenFileA( lpszFileName, &ofs, OF_READ );
406 if ( lzfd < 0 ) return 0;
408 switch ( read_xx_header( lzfd ) )
410 case IMAGE_OS2_SIGNATURE:
411 retv = find_ne_resource( lzfd, lpszResType, lpszResId,
412 &reslen, lpdwFileOffset );
415 case IMAGE_NT_SIGNATURE:
416 retv = find_pe_resource( lzfd, lpszResType, lpszResId,
417 &reslen, lpdwFileOffset );
422 return retv? reslen : 0;
426 /*************************************************************************
427 * GetFileResource [VER.3]
429 DWORD WINAPI GetFileResource16( LPCSTR lpszFileName, LPCSTR lpszResType,
430 LPCSTR lpszResId, DWORD dwFileOffset,
431 DWORD dwResLen, LPVOID lpvData )
436 DWORD reslen = dwResLen;
438 TRACE("(%s,type=0x%lx,id=0x%lx,off=%ld,len=%ld,data=%p)\n",
439 debugstr_a(lpszFileName), (LONG)lpszResType, (LONG)lpszResId,
440 dwFileOffset, dwResLen, lpvData );
442 lzfd = LZOpenFileA( lpszFileName, &ofs, OF_READ );
443 if ( lzfd < 0 ) return 0;
447 switch ( read_xx_header( lzfd ) )
449 case IMAGE_OS2_SIGNATURE:
450 retv = find_ne_resource( lzfd, lpszResType, lpszResId,
451 &reslen, &dwFileOffset );
454 case IMAGE_NT_SIGNATURE:
455 retv = find_pe_resource( lzfd, lpszResType, lpszResId,
456 &reslen, &dwFileOffset );
467 LZSeek( lzfd, dwFileOffset, SEEK_SET );
468 reslen = LZRead( lzfd, lpvData, min( reslen, dwResLen ) );