2 * NE resource functions
4 * Copyright 1993 Robert J. Amstadt
5 * Copyright 1995 Alexandre Julliard
6 * Copyright 1997 Alex Korobka
12 #include <sys/types.h>
17 #include "wine/winbase16.h"
26 #define NEXT_TYPEINFO(pTypeInfo) ((NE_TYPEINFO *)((char*)((pTypeInfo) + 1) + \
27 (pTypeInfo)->count * sizeof(NE_NAMEINFO)))
29 static FARPROC16 DefResourceHandlerProc = (FARPROC16)0xffffffff;
31 /***********************************************************************
34 * Find the type and resource id from their names.
35 * Return value is MAKELONG( typeId, resId ), or 0 if not found.
37 static DWORD NE_FindNameTableId( NE_MODULE *pModule, LPCSTR typeId, LPCSTR resId )
39 NE_TYPEINFO *pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->res_table + 2);
40 NE_NAMEINFO *pNameInfo;
46 for (; pTypeInfo->type_id != 0;
47 pTypeInfo = (NE_TYPEINFO *)((char*)(pTypeInfo+1) +
48 pTypeInfo->count * sizeof(NE_NAMEINFO)))
50 if (pTypeInfo->type_id != 0x800f) continue;
51 pNameInfo = (NE_NAMEINFO *)(pTypeInfo + 1);
52 for (count = pTypeInfo->count; count > 0; count--, pNameInfo++)
54 TRACE(resource, "NameTable entry: type=%04x id=%04x\n",
55 pTypeInfo->type_id, pNameInfo->id );
56 handle = LoadResource16( pModule->self,
57 (HRSRC16)((int)pNameInfo - (int)pModule) );
58 for(p = (WORD*)LockResource16(handle); p && *p; p = (WORD *)((char*)p+*p))
60 TRACE(resource," type=%04x '%s' id=%04x '%s'\n",
61 p[1], (char *)(p+3), p[2],
62 (char *)(p+3)+strlen((char *)(p+3))+1 );
63 /* Check for correct type */
67 if (!HIWORD(typeId)) continue;
68 if (lstrcmpiA( typeId,
69 (char *)(p + 3) )) continue;
71 else if (HIWORD(typeId) || (((DWORD)typeId & ~0x8000)!= p[1]))
74 /* Now check for the id */
78 if (!HIWORD(resId)) continue;
80 (char*)(p+3)+strlen((char*)(p+3))+1 )) continue;
83 else if (HIWORD(resId) || (((DWORD)resId & ~0x8000) != p[2]))
86 /* If we get here, we've found the entry */
88 TRACE(resource, " Found!\n" );
89 ret = MAKELONG( p[1], p[2] );
92 FreeResource16( handle );
99 /***********************************************************************
102 * Find header struct for a particular resource type.
104 NE_TYPEINFO *NE_FindTypeSection( LPBYTE pResTab,
105 NE_TYPEINFO *pTypeInfo, LPCSTR typeId )
107 /* start from pTypeInfo */
109 if (HIWORD(typeId) != 0) /* Named type */
112 BYTE len = strlen( str );
113 while (pTypeInfo->type_id)
115 if (!(pTypeInfo->type_id & 0x8000))
117 BYTE *p = pResTab + pTypeInfo->type_id;
118 if ((*p == len) && !lstrncmpiA( p+1, str, len ))
120 TRACE(resource, " Found type '%s'\n", str );
124 TRACE(resource, " Skipping type %04x\n", pTypeInfo->type_id );
125 pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
128 else /* Numeric type id */
130 WORD id = LOWORD(typeId) | 0x8000;
131 while (pTypeInfo->type_id)
133 if (pTypeInfo->type_id == id)
135 TRACE(resource, " Found type %04x\n", id );
138 TRACE(resource, " Skipping type %04x\n", pTypeInfo->type_id );
139 pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
145 /***********************************************************************
146 * NE_FindResourceFromType
148 * Find a resource once the type info structure has been found.
150 NE_NAMEINFO *NE_FindResourceFromType( LPBYTE pResTab,
151 NE_TYPEINFO *pTypeInfo, LPCSTR resId )
155 NE_NAMEINFO *pNameInfo = (NE_NAMEINFO *)(pTypeInfo + 1);
157 if (HIWORD(resId) != 0) /* Named resource */
160 BYTE len = strlen( str );
161 for (count = pTypeInfo->count; count > 0; count--, pNameInfo++)
163 if (pNameInfo->id & 0x8000) continue;
164 p = pResTab + pNameInfo->id;
165 if ((*p == len) && !lstrncmpiA( p+1, str, len ))
169 else /* Numeric resource id */
171 WORD id = LOWORD(resId) | 0x8000;
172 for (count = pTypeInfo->count; count > 0; count--, pNameInfo++)
173 if (pNameInfo->id == id)
180 /***********************************************************************
181 * NE_DefResourceHandler
183 * This is the default LoadProc() function.
185 HGLOBAL16 WINAPI NE_DefResourceHandler( HGLOBAL16 hMemObj, HMODULE16 hModule,
189 NE_MODULE* pModule = NE_GetPtr( hModule );
190 if (pModule && (fd = NE_OpenFile( pModule )) >= 0)
193 WORD sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
194 NE_NAMEINFO* pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
196 TRACE(resource, "loading, pos=%d, len=%d\n",
197 (int)pNameInfo->offset << sizeShift,
198 (int)pNameInfo->length << sizeShift );
200 handle = GlobalReAlloc16( hMemObj, pNameInfo->length << sizeShift, 0 );
202 handle = AllocResource16( hModule, hRsrc, 0 );
207 SetFilePointer( fd, (int)pNameInfo->offset << sizeShift, NULL, SEEK_SET );
208 ReadFile( fd, GlobalLock16( handle ), (int)pNameInfo->length << sizeShift,
216 /***********************************************************************
217 * NE_InitResourceHandler
219 * Fill in 'resloader' fields in the resource table.
221 BOOL NE_InitResourceHandler( HMODULE16 hModule )
223 NE_MODULE *pModule = NE_GetPtr( hModule );
224 NE_TYPEINFO *pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->res_table + 2);
226 if ( DefResourceHandlerProc == (FARPROC16)0xffffffff )
228 HMODULE16 hModule = GetModuleHandle16( "KERNEL" );
229 int ordinal = hModule? NE_GetOrdinal( hModule, "DefResourceHandler" ) : 0;
232 DefResourceHandlerProc = NE_GetEntryPointEx( hModule, ordinal, FALSE );
234 DefResourceHandlerProc = NULL;
237 TRACE(resource,"InitResourceHandler[%04x]\n", hModule );
239 while(pTypeInfo->type_id)
241 pTypeInfo->resloader = DefResourceHandlerProc;
242 pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
248 /**********************************************************************
249 * SetResourceHandler (KERNEL.43)
251 FARPROC16 WINAPI SetResourceHandler16( HMODULE16 hModule, SEGPTR typeId,
252 FARPROC16 resourceHandler )
254 FARPROC16 prevHandler = NULL;
255 NE_MODULE *pModule = NE_GetPtr( hModule );
256 LPBYTE pResTab = (LPBYTE)pModule + pModule->res_table;
257 NE_TYPEINFO *pTypeInfo = (NE_TYPEINFO *)(pResTab + 2);
259 if (!pModule || !pModule->res_table) return NULL;
261 TRACE( resource, "module=%04x type=%s\n",
262 hModule, debugres_a(PTR_SEG_TO_LIN(typeId)) );
266 if (!(pTypeInfo = NE_FindTypeSection( pResTab, pTypeInfo, PTR_SEG_TO_LIN(typeId) )))
268 prevHandler = pTypeInfo->resloader;
269 pTypeInfo->resloader = resourceHandler;
270 pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
276 /**********************************************************************
279 HRSRC16 NE_FindResource( NE_MODULE *pModule, LPCSTR name, LPCSTR type )
281 NE_TYPEINFO *pTypeInfo;
282 NE_NAMEINFO *pNameInfo;
285 if (!pModule || !pModule->res_table) return 0;
287 TRACE( resource, "module=%04x name=%s type=%s\n",
288 pModule->self, debugres_a(PTR_SEG_TO_LIN(name)),
289 debugres_a(PTR_SEG_TO_LIN(type)) );
291 if (HIWORD(name)) /* Check for '#xxx' name */
295 if (!(name = (LPCSTR)atoi( ptr + 1 )))
297 WARN(resource, "Incorrect resource name: %s\n", ptr);
302 if (HIWORD(type)) /* Check for '#xxx' type */
306 if (!(type = (LPCSTR)atoi( ptr + 1 )))
308 WARN(resource, "Incorrect resource type: %s\n", ptr);
313 if (HIWORD(type) || HIWORD(name))
315 DWORD id = NE_FindNameTableId( pModule, type, name );
318 type = (LPCSTR)(int)LOWORD(id);
319 name = (LPCSTR)(int)HIWORD(id);
323 pResTab = (LPBYTE)pModule + pModule->res_table;
324 pTypeInfo = (NE_TYPEINFO *)( pResTab + 2 );
328 if (!(pTypeInfo = NE_FindTypeSection( pResTab, pTypeInfo, type )))
330 if ((pNameInfo = NE_FindResourceFromType( pResTab, pTypeInfo, name )))
332 TRACE(resource, " Found id %08lx\n", (DWORD)name );
333 return (HRSRC16)( (int)pNameInfo - (int)pModule );
335 TRACE(resource, " Not found, going on\n" );
336 pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
339 WARN(resource, "failed!\n");
344 /**********************************************************************
345 * AllocResource (KERNEL.66)
347 HGLOBAL16 WINAPI AllocResource16( HMODULE16 hModule, HRSRC16 hRsrc, DWORD size)
349 NE_NAMEINFO *pNameInfo=NULL;
352 NE_MODULE *pModule = NE_GetPtr( hModule );
353 if (!pModule || !pModule->res_table || !hRsrc) return 0;
355 TRACE( resource, "module=%04x res=%04x size=%ld\n", hModule, hRsrc, size );
357 sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
358 pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
359 if (size < (DWORD)pNameInfo->length << sizeShift)
360 size = (DWORD)pNameInfo->length << sizeShift;
361 return GLOBAL_Alloc( GMEM_FIXED, size, hModule, FALSE, FALSE, FALSE );
365 /**********************************************************************
366 * DirectResAlloc (KERNEL.168)
368 * Check Schulman, p. 232 for details
370 HGLOBAL16 WINAPI DirectResAlloc16( HINSTANCE16 hInstance, WORD wType,
373 TRACE(resource,"(%04x,%04x,%04x)\n",
374 hInstance, wType, wSize );
375 if (!(hInstance = GetExePtr( hInstance ))) return 0;
376 if(wType != 0x10) /* 0x10 is the only observed value, passed from
377 CreateCursorIndirect. */
378 TRACE(resource, "(wType=%x)\n", wType);
379 return GLOBAL_Alloc(GMEM_MOVEABLE, wSize, hInstance, FALSE, FALSE, FALSE);
383 /**********************************************************************
386 INT16 NE_AccessResource( NE_MODULE *pModule, HRSRC16 hRsrc )
390 if (!pModule || !pModule->res_table || !hRsrc) return -1;
392 TRACE(resource, "module=%04x res=%04x\n", pModule->self, hRsrc );
394 if ((fd = _lopen16( NE_MODULE_NAME(pModule), OF_READ )) != HFILE_ERROR16)
396 WORD sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
397 NE_NAMEINFO *pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
398 _llseek16( fd, (int)pNameInfo->offset << sizeShift, SEEK_SET );
404 /**********************************************************************
407 DWORD NE_SizeofResource( NE_MODULE *pModule, HRSRC16 hRsrc )
409 NE_NAMEINFO *pNameInfo=NULL;
412 if (!pModule || !pModule->res_table) return 0;
414 TRACE(resource, "module=%04x res=%04x\n", pModule->self, hRsrc );
416 sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
417 pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
418 return (DWORD)pNameInfo->length << sizeShift;
422 /**********************************************************************
425 HGLOBAL16 NE_LoadResource( NE_MODULE *pModule, HRSRC16 hRsrc )
427 NE_TYPEINFO *pTypeInfo;
428 NE_NAMEINFO *pNameInfo = NULL;
431 TRACE( resource, "module=%04x res=%04x\n", pModule->self, hRsrc );
432 if (!hRsrc || !pModule || !pModule->res_table) return 0;
434 /* First, verify hRsrc (just an offset from pModule to the needed pNameInfo) */
436 d = pModule->res_table + 2;
437 pTypeInfo = (NE_TYPEINFO *)((char *)pModule + d);
440 if (pTypeInfo->type_id == 0)
441 break; /* terminal entry */
442 d += sizeof(NE_TYPEINFO) + pTypeInfo->count * sizeof(NE_NAMEINFO);
445 if( ((d - hRsrc)%sizeof(NE_NAMEINFO)) == 0 )
447 pNameInfo = (NE_NAMEINFO *)(((char *)pModule) + hRsrc);
451 break; /* NE_NAMEINFO boundary mismatch */
453 pTypeInfo = (NE_TYPEINFO *)(((char *)pModule) + d);
458 if (pNameInfo->handle
459 && !(GlobalFlags16(pNameInfo->handle) & GMEM_DISCARDED))
462 TRACE(resource, " Already loaded, new count=%d\n",
467 if ( pTypeInfo->resloader
468 && pTypeInfo->resloader != DefResourceHandlerProc )
469 pNameInfo->handle = Callbacks->CallResourceHandlerProc(
470 pTypeInfo->resloader, pNameInfo->handle, pModule->self, hRsrc );
472 pNameInfo->handle = NE_DefResourceHandler(
473 pNameInfo->handle, pModule->self, hRsrc );
475 if (pNameInfo->handle)
478 pNameInfo->flags |= NE_SEGFLAGS_LOADED;
481 return pNameInfo->handle;
487 /**********************************************************************
490 BOOL16 NE_FreeResource( NE_MODULE *pModule, HGLOBAL16 handle )
492 NE_TYPEINFO *pTypeInfo;
493 NE_NAMEINFO *pNameInfo;
496 if (!handle || !pModule || !pModule->res_table) return handle;
498 TRACE(resource, "handle=%04x\n", handle );
500 pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->res_table + 2);
501 while (pTypeInfo->type_id)
503 pNameInfo = (NE_NAMEINFO *)(pTypeInfo + 1);
504 for (count = pTypeInfo->count; count > 0; count--)
506 if (pNameInfo->handle == handle)
508 if (pNameInfo->usage > 0) pNameInfo->usage--;
509 if (pNameInfo->usage == 0)
511 GlobalFree16( pNameInfo->handle );
512 pNameInfo->handle = 0;
513 pNameInfo->flags &= ~NE_SEGFLAGS_LOADED;
519 pTypeInfo = (NE_TYPEINFO *)pNameInfo;