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 "callback.h"
  22 #include "debugtools.h"
  23
  24 DEFAULT_DEBUG_CHANNEL(resource);
  25
  26 #define NEXT_TYPEINFO(pTypeInfo) ((NE_TYPEINFO *)((char*)((pTypeInfo) + 1) + \
  27                                    (pTypeInfo)->count * sizeof(NE_NAMEINFO)))
  28
  29 static FARPROC16 DefResourceHandlerProc = (FARPROC16)0xffffffff;
  30
  31 /* already defined in segment.c glue code */
  32 extern WORD CALLBACK NE_CallTo16_word_www(FARPROC16,WORD,WORD,WORD);
  33
  34 /***********************************************************************
  35  *           NE_FindNameTableId
  36  *
  37  * Find the type and resource id from their names.
  38  * Return value is MAKELONG( typeId, resId ), or 0 if not found.
  39  */
  40 static DWORD NE_FindNameTableId( NE_MODULE *pModule, LPCSTR typeId, LPCSTR resId )
  41 {
  42     NE_TYPEINFO *pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->res_table + 2);
  43     NE_NAMEINFO *pNameInfo;
  44     HGLOBAL16 handle;
  45     WORD *p;
  46     DWORD ret = 0;
  47     int count;
  48
  49     for (; pTypeInfo->type_id != 0;
  50            pTypeInfo = (NE_TYPEINFO *)((char*)(pTypeInfo+1) +
  51                                         pTypeInfo->count * sizeof(NE_NAMEINFO)))
  52     {
  53         if (pTypeInfo->type_id != 0x800f) continue;
  54         pNameInfo = (NE_NAMEINFO *)(pTypeInfo + 1);
  55         for (count = pTypeInfo->count; count > 0; count--, pNameInfo++)
  56         {
  57             TRACE("NameTable entry: type=%04x id=%04x\n",
  58                               pTypeInfo->type_id, pNameInfo->id );
  59             handle = LoadResource16( pModule->self,
  60                                    (HRSRC16)((int)pNameInfo - (int)pModule) );
  61             for(p = (WORD*)LockResource16(handle); p && *p; p = (WORD *)((char*)p+*p))
  62             {
  63                 TRACE("  type=%04x '%s' id=%04x '%s'\n",
  64                                   p[1], (char *)(p+3), p[2],
  65                                   (char *)(p+3)+strlen((char *)(p+3))+1 );
  66                 /* Check for correct type */
  67
  68                 if (p[1] & 0x8000)
  69                 {
  70                     if (!HIWORD(typeId)) continue;
  71                     if (strcasecmp( typeId, (char *)(p + 3) )) continue;
  72                 }
  73                 else if (HIWORD(typeId) || (((DWORD)typeId & ~0x8000)!= p[1]))
  74                   continue;
  75
  76                 /* Now check for the id */
  77
  78                 if (p[2] & 0x8000)
  79                 {
  80                     if (!HIWORD(resId)) continue;
  81                     if (strcasecmp( resId, (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) && !strncasecmp( 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) && !strncasecmp( 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", pModule->self, debugres_a(name), debugres_a(type) );
 309
 310     if (HIWORD(name))  /* Check for '#xxx' name */
 311     {
 312         LPCSTR ptr = name;
 313         if (ptr[0] == '#')
 314             if (!(name = (LPCSTR)atoi( ptr + 1 )))
 315             {
 316                 WARN("Incorrect resource name: %s\n", ptr);
 317                 return 0;
 318             }
 319     }
 320
 321     if (HIWORD(type))  /* Check for '#xxx' type */
 322     {
 323         LPCSTR ptr = type;
 324         if (ptr[0] == '#')
 325             if (!(type = (LPCSTR)atoi( ptr + 1 )))
 326             {
 327                 WARN("Incorrect resource type: %s\n", ptr);
 328                 return 0;
 329             }
 330     }
 331
 332     if (HIWORD(type) || HIWORD(name))
 333     {
 334         DWORD id = NE_FindNameTableId( pModule, type, name );
 335         if (id)  /* found */
 336         {
 337             type = (LPCSTR)(int)LOWORD(id);
 338             name = (LPCSTR)(int)HIWORD(id);
 339         }
 340     }
 341
 342     pResTab = (LPBYTE)pModule + pModule->res_table;
 343     pTypeInfo = (NE_TYPEINFO *)( pResTab + 2 );
 344
 345     for (;;)
 346     {
 347         if (!(pTypeInfo = NE_FindTypeSection( pResTab, pTypeInfo, type )))
 348             break;
 349         if ((pNameInfo = NE_FindResourceFromType( pResTab, pTypeInfo, name )))
 350         {
 351             TRACE("    Found id %08lx\n", (DWORD)name );
 352             return (HRSRC16)( (int)pNameInfo - (int)pModule );
 353         }
 354         TRACE("    Not found, going on\n" );
 355         pTypeInfo = NEXT_TYPEINFO(pTypeInfo);
 356     }
 357
 358     WARN("failed!\n");
 359     return 0;
 360 }
 361
 362
 363 /**********************************************************************
 364  *          AllocResource    (KERNEL.66)
 365  */
 366 HGLOBAL16 WINAPI AllocResource16( HMODULE16 hModule, HRSRC16 hRsrc, DWORD size)
 367 {
 368     NE_NAMEINFO *pNameInfo=NULL;
 369     WORD sizeShift;
 370
 371     NE_MODULE *pModule = NE_GetPtr( hModule );
 372     if (!pModule || !pModule->res_table || !hRsrc) return 0;
 373
 374     TRACE("module=%04x res=%04x size=%ld\n", hModule, hRsrc, size );
 375
 376     sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
 377     pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
 378     if (size < (DWORD)pNameInfo->length << sizeShift)
 379         size = (DWORD)pNameInfo->length << sizeShift;
 380     return GLOBAL_Alloc( GMEM_FIXED, size, hModule, WINE_LDT_FLAGS_DATA );
 381 }
 382
 383
 384 /**********************************************************************
 385  *      DirectResAlloc    (KERNEL.168)
 386  *
 387  * Check Schulman, p. 232 for details
 388  */
 389 HGLOBAL16 WINAPI DirectResAlloc16( HINSTANCE16 hInstance, WORD wType,
 390                                  UINT16 wSize )
 391 {
 392     TRACE("(%04x,%04x,%04x)\n",
 393                      hInstance, wType, wSize );
 394     if (!(hInstance = GetExePtr( hInstance ))) return 0;
 395     if(wType != 0x10)   /* 0x10 is the only observed value, passed from
 396                            CreateCursorIndirect. */
 397         TRACE("(wType=%x)\n", wType);
 398     return GLOBAL_Alloc(GMEM_MOVEABLE, wSize, hInstance, WINE_LDT_FLAGS_DATA );
 399 }
 400
 401
 402 /**********************************************************************
 403  *          AccessResource16 (KERNEL.64)
 404  */
 405 INT16 WINAPI AccessResource16( HINSTANCE16 hModule, HRSRC16 hRsrc )
 406 {
 407     HFILE16 fd;
 408     NE_MODULE *pModule = NE_GetPtr( hModule );
 409
 410     if (!pModule || !pModule->res_table || !hRsrc) return -1;
 411
 412     TRACE("module=%04x res=%04x\n", pModule->self, hRsrc );
 413
 414     if ((fd = _lopen16( NE_MODULE_NAME(pModule), OF_READ )) != HFILE_ERROR16)
 415     {
 416         WORD sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
 417         NE_NAMEINFO *pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
 418         _llseek16( fd, (int)pNameInfo->offset << sizeShift, SEEK_SET );
 419     }
 420     return fd;
 421 }
 422
 423
 424 /**********************************************************************
 425  *          NE_SizeofResource
 426  */
 427 DWORD NE_SizeofResource( NE_MODULE *pModule, HRSRC16 hRsrc )
 428 {
 429     NE_NAMEINFO *pNameInfo=NULL;
 430     WORD sizeShift;
 431
 432     if (!pModule || !pModule->res_table) return 0;
 433
 434     TRACE("module=%04x res=%04x\n", pModule->self, hRsrc );
 435
 436     sizeShift = *(WORD *)((char *)pModule + pModule->res_table);
 437     pNameInfo = (NE_NAMEINFO*)((char*)pModule + hRsrc);
 438     return (DWORD)pNameInfo->length << sizeShift;
 439 }
 440
 441
 442 /**********************************************************************
 443  *          NE_LoadResource
 444  */
 445 HGLOBAL16 NE_LoadResource( NE_MODULE *pModule, HRSRC16 hRsrc )
 446 {
 447     NE_TYPEINFO *pTypeInfo;
 448     NE_NAMEINFO *pNameInfo = NULL;
 449     int d;
 450
 451     TRACE("module=%04x res=%04x\n", pModule->self, hRsrc );
 452     if (!hRsrc || !pModule || !pModule->res_table) return 0;
 453
 454     /* First, verify hRsrc (just an offset from pModule to the needed pNameInfo) */
 455
 456     d = pModule->res_table + 2;
 457     pTypeInfo = (NE_TYPEINFO *)((char *)pModule + d);
 458     while( hRsrc > d )
 459     {
 460         if (pTypeInfo->type_id == 0)
 461                 break; /* terminal entry */
 462         d += sizeof(NE_TYPEINFO) + pTypeInfo->count * sizeof(NE_NAMEINFO);
 463         if (hRsrc < d)
 464         {
 465             if( ((d - hRsrc)%sizeof(NE_NAMEINFO)) == 0 )
 466             {
 467                 pNameInfo = (NE_NAMEINFO *)(((char *)pModule) + hRsrc);
 468                 break;
 469             }
 470             else
 471                 break; /* NE_NAMEINFO boundary mismatch */
 472         }
 473         pTypeInfo = (NE_TYPEINFO *)(((char *)pModule) + d);
 474     }
 475
 476     if (pNameInfo)
 477     {
 478         if (pNameInfo->handle
 479             && !(GlobalFlags16(pNameInfo->handle) & GMEM_DISCARDED))
 480         {
 481             pNameInfo->usage++;
 482             TRACE("  Already loaded, new count=%d\n",
 483                               pNameInfo->usage );
 484         }
 485         else
 486         {
 487             if (    pTypeInfo->resloader
 488                  && pTypeInfo->resloader != DefResourceHandlerProc )
 489                 pNameInfo->handle = NE_CallTo16_word_www(
 490                     pTypeInfo->resloader, pNameInfo->handle, pModule->self, hRsrc );
 491             else
 492                 pNameInfo->handle = NE_DefResourceHandler(
 493                                          pNameInfo->handle, pModule->self, hRsrc );
 494
 495             if (pNameInfo->handle)
 496             {
 497                 pNameInfo->usage++;
 498                 pNameInfo->flags |= NE_SEGFLAGS_LOADED;
 499             }
 500         }
 501         return pNameInfo->handle;
 502     }
 503     return 0;
 504 }
 505
 506
 507 /**********************************************************************
 508  *          NE_FreeResource
 509  */
 510 BOOL16 NE_FreeResource( NE_MODULE *pModule, HGLOBAL16 handle )
 511 {
 512     NE_TYPEINFO *pTypeInfo;
 513     NE_NAMEINFO *pNameInfo;
 514     WORD count;
 515
 516     if (!handle || !pModule || !pModule->res_table) return handle;
 517
 518     TRACE("handle=%04x\n", handle );
 519
 520     pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->res_table + 2);
 521     while (pTypeInfo->type_id)
 522     {
 523         pNameInfo = (NE_NAMEINFO *)(pTypeInfo + 1);
 524         for (count = pTypeInfo->count; count > 0; count--)
 525         {
 526             if (pNameInfo->handle == handle)
 527             {
 528                 if (pNameInfo->usage > 0) pNameInfo->usage--;
 529                 if (pNameInfo->usage == 0)
 530                 {
 531                     GlobalFree16( pNameInfo->handle );
 532                     pNameInfo->handle = 0;
 533                     pNameInfo->flags &= ~NE_SEGFLAGS_LOADED;
 534                 }
 535                 return 0;
 536             }
 537             pNameInfo++;
 538         }
 539         pTypeInfo = (NE_TYPEINFO *)pNameInfo;
 540     }
 541
 542     return handle;
 543 }