loader/ne/resource.c

   1 /*
   2  * NE resource functions
   3  *
   4  * Copyright 1993 Robert J. Amstadt
   5  * Copyright 1995 Alexandre Julliard
   6  * Copyright 1997 Alex Korobka
   7  */
   8
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12 #include <sys/types.h>
  13 #include <sys/stat.h>
  14 #include <fcntl.h>
  15 #include <unistd.h>
  16 #include "windef.h"
  17 #include "wine/winbase16.h"
  18 #include "global.h"
  19 #include "ldt.h"
  20 #include "module.h"
  21 #include "neexe.h"
  22 #include "callback.h"
  23 #include "debugtools.h"
  24
  25 DEFAULT_DEBUG_CHANNEL(resource)
  26
  27 #define NEXT_TYPEINFO(pTypeInfo) ((NE_TYPEINFO *)((char*)((pTypeInfo) + 1) + \
  28                                    (pTypeInfo)->count * sizeof(NE_NAMEINFO)))
  29
  30 static FARPROC16 DefResourceHandlerProc = (FARPROC16)0xffffffff;
  31
  32 /***********************************************************************
  33  *           NE_FindNameTableId
  34  *
  35  * Find the type and resource id from their names.
  36  * Return value is MAKELONG( typeId, resId ), or 0 if not found.
  37  */
  38 static DWORD NE_FindNameTableId( NE_MODULE *pModule, LPCSTR typeId, LPCSTR resId )
  39 {
  40     NE_TYPEINFO *pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->res_table + 2);
  41     NE_NAMEINFO *pNameInfo;
  42     HGLOBAL16 handle;
  43     WORD *p;
  44     DWORD ret = 0;
  45     int count;
  46
  47     for (; pTypeInfo->type_id != 0;
  48            pTypeInfo = (NE_TYPEINFO *)((char*)(pTypeInfo+1) +
  49                                         pTypeInfo->count * sizeof(NE_NAMEINFO)))
  50     {
  51         if (pTypeInfo->type_id != 0x800f) continue;
  52         pNameInfo = (NE_NAMEINFO *)(pTypeInfo + 1);
  53         for (count = pTypeInfo->count; count > 0; count--, pNameInfo++)
  54         {
  55             TRACE("NameTable entry: type=%04x id=%04x\n",
  56                               pTypeInfo->type_id, pNameInfo->id );
  57             handle = LoadResource16( pModule->self,
  58                                    (HRSRC16)((int)pNameInfo - (int)pModule) );
  59             for(p = (WORD*)LockResource16(handle); p && *p; p = (WORD *)((char*)p+*p))
  60             {
  61                 TRACE("  type=%04x '%s' id=%04x '%s'\n",
  62                                   p[1], (char *)(p+3), p[2],
  63                                   (char *)(p+3)+strlen((char *)(p+3))+1 );
  64                 /* Check for correct type */
  65
  66                 if (p[1] & 0x8000)
  67                 {
  68                     if (!HIWORD(typeId)) continue;
  69                     if (lstrcmpiA( typeId,
  70                                      (char *)(p + 3) )) continue;
  71                 }
  72                 else if (HIWORD(typeId) || (((DWORD)typeId & ~0x8000)!= p[1]))
  73                   continue;
  74
  75                 /* Now check for the id */
  76
  77                 if (p[2] & 0x8000)
  78                 {
  79                     if (!HIWORD(resId)) continue;
  80                     if (lstrcmpiA( resId,
  81                                (char*)(p+3)+strlen((char*)(p+3))+1 )) continue;
  82
  83                 }
  84                 else if (HIWORD(resId) || (((DWORD)resId & ~0x8000) != p[2]))
  85                   continue;
  86
  87                 /* If we get here, we've found the entry */
  88
  89                 TRACE("  Found!\n" );
  90                 ret = MAKELONG( p[1], p[2] );
  91                 break;
  92             }
  93             FreeResource16( handle );
  94             if (ret) return ret;
  95         }
  96     }
  97     return 0;
  98 }
  99
 100 /***********************************************************************
 101  *           NE_FindTypeSection
 102  *
 103  * Find header struct for a particular resource type.
 104  */
 105 NE_TYPEINFO *NE_FindTypeSection( LPBYTE pResTab,
 106                                  NE_TYPEINFO *pTypeInfo, LPCSTR typeId )
 107 {
 108     /* start from pTypeInfo */
 109
 110     if (HIWORD(typeId) != 0)  /* Named type */
 111     {
 112         LPCSTR str = typeId;
 113         BYTE len = strlen( str );
 114         while (pTypeInfo->type_id)
 115         {
 116             if (!(pTypeInfo->type_id & 0x8000))
 117             {
 118                 BYTE *p = pResTab + pTypeInfo->type_id;
 119                 if ((*p == len) && !lstrncmpiA( p+1, str, len ))
 120                 {
 121                     TRACE("  Found type '%s'\n", str );
 122                     return pTypeInfo;
 123                 }
 124             }
 125             TRACE("  Skipping type %04x\n", pTypeInfo->type_id );
 126             pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
 127         }
 128     }
 129     else  /* Numeric type id */
 130     {
 131         WORD id = LOWORD(typeId) | 0x8000;
 132         while (pTypeInfo->type_id)
 133         {
 134             if (pTypeInfo->type_id == id)
 135             {
 136                 TRACE("  Found type %04x\n", id );
 137                 return pTypeInfo;
 138             }
 139             TRACE("  Skipping type %04x\n", pTypeInfo->type_id );
 140             pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
 141         }
 142     }
 143     return NULL;
 144 }
 145
 146 /***********************************************************************
 147  *           NE_FindResourceFromType
 148  *
 149  * Find a resource once the type info structure has been found.
 150  */
 151 NE_NAMEINFO *NE_FindResourceFromType( LPBYTE pResTab,
 152                                       NE_TYPEINFO *pTypeInfo, LPCSTR resId )
 153 {
 154     BYTE *p;
 155     int count;
 156     NE_NAMEINFO *pNameInfo = (NE_NAMEINFO *)(pTypeInfo + 1);
 157
 158     if (HIWORD(resId) != 0)  /* Named resource */
 159     {
 160         LPCSTR str = resId;
 161         BYTE len = strlen( str );
 162         for (count = pTypeInfo->count; count > 0; count--, pNameInfo++)
 163         {
 164             if (pNameInfo->id & 0x8000) continue;
 165             p = pResTab + pNameInfo->id;
 166             if ((*p == len) && !lstrncmpiA( p+1, str, len ))
 167                 return pNameInfo;
 168         }
 169     }
 170     else  /* Numeric resource id */
 171     {
 172         WORD id = LOWORD(resId) | 0x8000;
 173         for (count = pTypeInfo->count; count > 0; count--, pNameInfo++)
 174             if (pNameInfo->id == id)
 175                 return pNameInfo;
 176     }
 177     return NULL;
 178 }
 179
 180
 181 /***********************************************************************
 182  *           NE_DefResourceHandler
 183  *
 184  * This is the default LoadProc() function.
 185  */
 186 HGLOBAL16 WINAPI NE_DefResourceHandler( HGLOBAL16 hMemObj, HMODULE16 hModule,
 187                                         HRSRC16 hRsrc )
 188 {
 189     HANDLE fd;
 190     NE_MODULE* pModule = NE_GetPtr( hModule );
 191     if (pModule && (pModule->flags & NE_FFLAGS_BUILTIN))
 192     {
 193         HGLOBAL16 handle;
 194         WORD sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
 195         NE_NAMEINFO* pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
 196
 197         if ( hMemObj )
 198             handle = GlobalReAlloc16( hMemObj, pNameInfo->length << sizeShift, 0 );
 199         else
 200             handle = AllocResource16( hModule, hRsrc, 0 );
 201
 202         if ( handle )
 203         {
 204             /* NOTE: hRsrcMap points to start of built-in resource data */
 205             memcpy( GlobalLock16( handle ),
 206                     (char *)pModule->hRsrcMap + (pNameInfo->offset << sizeShift),
 207                     pNameInfo->length << sizeShift );
 208         }
 209         return handle;
 210     }
 211     if (pModule && (fd = NE_OpenFile( pModule )) >= 0)
 212     {
 213         HGLOBAL16 handle;
 214         WORD sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
 215         NE_NAMEINFO* pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
 216
 217         TRACE("loading, pos=%d, len=%d\n",
 218                      (int)pNameInfo->offset << sizeShift,
 219                      (int)pNameInfo->length << sizeShift );
 220         if( hMemObj )
 221             handle = GlobalReAlloc16( hMemObj, pNameInfo->length << sizeShift, 0 );
 222         else
 223             handle = AllocResource16( hModule, hRsrc, 0 );
 224
 225         if( handle )
 226         {
 227             DWORD res;
 228             SetFilePointer( fd, (int)pNameInfo->offset << sizeShift, NULL, SEEK_SET );
 229             ReadFile( fd, GlobalLock16( handle ), (int)pNameInfo->length << sizeShift,
 230                       &res, NULL );
 231         }
 232         return handle;
 233     }
 234     return (HGLOBAL16)0;
 235 }
 236
 237 /***********************************************************************
 238  *           NE_InitResourceHandler
 239  *
 240  * Fill in 'resloader' fields in the resource table.
 241  */
 242 BOOL NE_InitResourceHandler( HMODULE16 hModule )
 243 {
 244     NE_MODULE *pModule = NE_GetPtr( hModule );
 245     NE_TYPEINFO *pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->res_table + 2);
 246
 247     if ( DefResourceHandlerProc == (FARPROC16)0xffffffff )
 248     {
 249         HMODULE16 hModule = GetModuleHandle16( "KERNEL" );
 250         int ordinal = hModule? NE_GetOrdinal( hModule, "DefResourceHandler" ) : 0;
 251
 252         if ( ordinal )
 253             DefResourceHandlerProc = NE_GetEntryPointEx( hModule, ordinal, FALSE );
 254         else
 255             DefResourceHandlerProc = NULL;
 256     }
 257
 258     TRACE("InitResourceHandler[%04x]\n", hModule );
 259
 260     while(pTypeInfo->type_id)
 261     {
 262         pTypeInfo->resloader = DefResourceHandlerProc;
 263         pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
 264     }
 265     return TRUE;
 266 }
 267
 268
 269 /**********************************************************************
 270  *      SetResourceHandler      (KERNEL.43)
 271  */
 272 FARPROC16 WINAPI SetResourceHandler16( HMODULE16 hModule, SEGPTR typeId,
 273                                      FARPROC16 resourceHandler )
 274 {
 275     FARPROC16 prevHandler = NULL;
 276     NE_MODULE *pModule = NE_GetPtr( hModule );
 277     LPBYTE pResTab = (LPBYTE)pModule + pModule->res_table;
 278     NE_TYPEINFO *pTypeInfo = (NE_TYPEINFO *)(pResTab + 2);
 279
 280     if (!pModule || !pModule->res_table) return NULL;
 281
 282     TRACE("module=%04x type=%s\n",
 283            hModule, debugres_a(PTR_SEG_TO_LIN(typeId)) );
 284
 285     for (;;)
 286     {
 287         if (!(pTypeInfo = NE_FindTypeSection( pResTab, pTypeInfo, PTR_SEG_TO_LIN(typeId) )))
 288             break;
 289         prevHandler = pTypeInfo->resloader;
 290         pTypeInfo->resloader = resourceHandler;
 291         pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
 292     }
 293     return prevHandler;
 294 }
 295
 296
 297 /**********************************************************************
 298  *          NE_FindResource
 299  */
 300 HRSRC16 NE_FindResource( NE_MODULE *pModule, LPCSTR name, LPCSTR type )
 301 {
 302     NE_TYPEINFO *pTypeInfo;
 303     NE_NAMEINFO *pNameInfo;
 304     LPBYTE pResTab;
 305
 306     if (!pModule || !pModule->res_table) return 0;
 307
 308     TRACE("module=%04x name=%s type=%s\n",
 309            pModule->self, debugres_a(PTR_SEG_TO_LIN(name)),
 310            debugres_a(PTR_SEG_TO_LIN(type)) );
 311
 312     if (HIWORD(name))  /* Check for '#xxx' name */
 313     {
 314         LPCSTR ptr = name;
 315         if (ptr[0] == '#')
 316             if (!(name = (LPCSTR)atoi( ptr + 1 )))
 317             {
 318                 WARN("Incorrect resource name: %s\n", ptr);
 319                 return 0;
 320             }
 321     }
 322
 323     if (HIWORD(type))  /* Check for '#xxx' type */
 324     {
 325         LPCSTR ptr = type;
 326         if (ptr[0] == '#')
 327             if (!(type = (LPCSTR)atoi( ptr + 1 )))
 328             {
 329                 WARN("Incorrect resource type: %s\n", ptr);
 330                 return 0;
 331             }
 332     }
 333
 334     if (HIWORD(type) || HIWORD(name))
 335     {
 336         DWORD id = NE_FindNameTableId( pModule, type, name );
 337         if (id)  /* found */
 338         {
 339             type = (LPCSTR)(int)LOWORD(id);
 340             name = (LPCSTR)(int)HIWORD(id);
 341         }
 342     }
 343
 344     pResTab = (LPBYTE)pModule + pModule->res_table;
 345     pTypeInfo = (NE_TYPEINFO *)( pResTab + 2 );
 346
 347     for (;;)
 348     {
 349         if (!(pTypeInfo = NE_FindTypeSection( pResTab, pTypeInfo, type )))
 350             break;
 351         if ((pNameInfo = NE_FindResourceFromType( pResTab, pTypeInfo, name )))
 352         {
 353             TRACE("    Found id %08lx\n", (DWORD)name );
 354             return (HRSRC16)( (int)pNameInfo - (int)pModule );
 355         }
 356         TRACE("    Not found, going on\n" );
 357         pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
 358     }
 359
 360     WARN("failed!\n");
 361     return 0;
 362 }
 363
 364
 365 /**********************************************************************
 366  *          AllocResource    (KERNEL.66)
 367  */
 368 HGLOBAL16 WINAPI AllocResource16( HMODULE16 hModule, HRSRC16 hRsrc, DWORD size)
 369 {
 370     NE_NAMEINFO *pNameInfo=NULL;
 371     WORD sizeShift;
 372
 373     NE_MODULE *pModule = NE_GetPtr( hModule );
 374     if (!pModule || !pModule->res_table || !hRsrc) return 0;
 375
 376     TRACE("module=%04x res=%04x size=%ld\n", hModule, hRsrc, size );
 377
 378     sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
 379     pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
 380     if (size < (DWORD)pNameInfo->length << sizeShift)
 381         size = (DWORD)pNameInfo->length << sizeShift;
 382     return GLOBAL_Alloc( GMEM_FIXED, size, hModule, FALSE, FALSE, FALSE );
 383 }
 384
 385
 386 /**********************************************************************
 387  *      DirectResAlloc    (KERNEL.168)
 388  *
 389  * Check Schulman, p. 232 for details
 390  */
 391 HGLOBAL16 WINAPI DirectResAlloc16( HINSTANCE16 hInstance, WORD wType,
 392                                  UINT16 wSize )
 393 {
 394     TRACE("(%04x,%04x,%04x)\n",
 395                      hInstance, wType, wSize );
 396     if (!(hInstance = GetExePtr( hInstance ))) return 0;
 397     if(wType != 0x10)   /* 0x10 is the only observed value, passed from
 398                            CreateCursorIndirect. */
 399         TRACE("(wType=%x)\n", wType);
 400     return GLOBAL_Alloc(GMEM_MOVEABLE, wSize, hInstance, FALSE, FALSE, FALSE);
 401 }
 402
 403
 404 /**********************************************************************
 405  *          NE_AccessResource
 406  */
 407 INT16 NE_AccessResource( NE_MODULE *pModule, HRSRC16 hRsrc )
 408 {
 409     HFILE16 fd;
 410
 411     if (!pModule || !pModule->res_table || !hRsrc) return -1;
 412
 413     TRACE("module=%04x res=%04x\n", pModule->self, hRsrc );
 414
 415     if ((fd = _lopen16( NE_MODULE_NAME(pModule), OF_READ )) != HFILE_ERROR16)
 416     {
 417         WORD sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
 418         NE_NAMEINFO *pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
 419         _llseek16( fd, (int)pNameInfo->offset << sizeShift, SEEK_SET );
 420     }
 421     return fd;
 422 }
 423
 424
 425 /**********************************************************************
 426  *          NE_SizeofResource
 427  */
 428 DWORD NE_SizeofResource( NE_MODULE *pModule, HRSRC16 hRsrc )
 429 {
 430     NE_NAMEINFO *pNameInfo=NULL;
 431     WORD sizeShift;
 432
 433     if (!pModule || !pModule->res_table) return 0;
 434
 435     TRACE("module=%04x res=%04x\n", pModule->self, hRsrc );
 436
 437     sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
 438     pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
 439     return (DWORD)pNameInfo->length << sizeShift;
 440 }
 441
 442
 443 /**********************************************************************
 444  *          NE_LoadResource
 445  */
 446 HGLOBAL16 NE_LoadResource( NE_MODULE *pModule, HRSRC16 hRsrc )
 447 {
 448     NE_TYPEINFO *pTypeInfo;
 449     NE_NAMEINFO *pNameInfo = NULL;
 450     int d;
 451
 452     TRACE("module=%04x res=%04x\n", pModule->self, hRsrc );
 453     if (!hRsrc || !pModule || !pModule->res_table) return 0;
 454
 455     /* First, verify hRsrc (just an offset from pModule to the needed pNameInfo) */
 456
 457     d = pModule->res_table + 2;
 458     pTypeInfo = (NE_TYPEINFO *)((char *)pModule + d);
 459     while( hRsrc > d )
 460     {
 461         if (pTypeInfo->type_id == 0)
 462                 break; /* terminal entry */
 463         d += sizeof(NE_TYPEINFO) + pTypeInfo->count * sizeof(NE_NAMEINFO);
 464         if (hRsrc < d)
 465         {
 466             if( ((d - hRsrc)%sizeof(NE_NAMEINFO)) == 0 )
 467             {
 468                 pNameInfo = (NE_NAMEINFO *)(((char *)pModule) + hRsrc);
 469                 break;
 470             }
 471             else
 472                 break; /* NE_NAMEINFO boundary mismatch */
 473         }
 474         pTypeInfo = (NE_TYPEINFO *)(((char *)pModule) + d);
 475     }
 476
 477     if (pNameInfo)
 478     {
 479         if (pNameInfo->handle
 480             && !(GlobalFlags16(pNameInfo->handle) & GMEM_DISCARDED))
 481         {
 482             pNameInfo->usage++;
 483             TRACE("  Already loaded, new count=%d\n",
 484                               pNameInfo->usage );
 485         }
 486         else
 487         {
 488             if (    pTypeInfo->resloader
 489                  && pTypeInfo->resloader != DefResourceHandlerProc )
 490                 pNameInfo->handle = Callbacks->CallResourceHandlerProc(
 491                     pTypeInfo->resloader, pNameInfo->handle, pModule->self, hRsrc );
 492             else
 493                 pNameInfo->handle = NE_DefResourceHandler(
 494                                          pNameInfo->handle, pModule->self, hRsrc );
 495
 496             if (pNameInfo->handle)
 497             {
 498                 pNameInfo->usage++;
 499                 pNameInfo->flags |= NE_SEGFLAGS_LOADED;
 500             }
 501         }
 502         return pNameInfo->handle;
 503     }
 504     return 0;
 505 }
 506
 507
 508 /**********************************************************************
 509  *          NE_FreeResource
 510  */
 511 BOOL16 NE_FreeResource( NE_MODULE *pModule, HGLOBAL16 handle )
 512 {
 513     NE_TYPEINFO *pTypeInfo;
 514     NE_NAMEINFO *pNameInfo;
 515     WORD count;
 516
 517     if (!handle || !pModule || !pModule->res_table) return handle;
 518
 519     TRACE("handle=%04x\n", handle );
 520
 521     pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->res_table + 2);
 522     while (pTypeInfo->type_id)
 523     {
 524         pNameInfo = (NE_NAMEINFO *)(pTypeInfo + 1);
 525         for (count = pTypeInfo->count; count > 0; count--)
 526         {
 527             if (pNameInfo->handle == handle)
 528             {
 529                 if (pNameInfo->usage > 0) pNameInfo->usage--;
 530                 if (pNameInfo->usage == 0)
 531                 {
 532                     GlobalFree16( pNameInfo->handle );
 533                     pNameInfo->handle = 0;
 534                     pNameInfo->flags &= ~NE_SEGFLAGS_LOADED;
 535                 }
 536                 return 0;
 537             }
 538             pNameInfo++;
 539         }
 540         pTypeInfo = (NE_TYPEINFO *)pNameInfo;
 541     }
 542
 543     return handle;
 544 }