loader/ne/module.c

   1 /*
   2  * NE modules
   3  *
   4  * Copyright 1995 Alexandre Julliard
   5  */
   6
   7 #include <assert.h>
   8 #include <fcntl.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <unistd.h>
  12 #include "module.h"
  13 #include "file.h"
  14 #include "ldt.h"
  15 #include "callback.h"
  16 #include "heap.h"
  17 #include "task.h"
  18 #include "global.h"
  19 #include "process.h"
  20 #include "toolhelp.h"
  21 #include "snoop.h"
  22 #include "stackframe.h"
  23 #include "debug.h"
  24
  25 FARPROC16 (*fnSNOOP16_GetProcAddress16)(HMODULE16,DWORD,FARPROC16) = NULL;
  26 void (*fnSNOOP16_RegisterDLL)(NE_MODULE*,LPCSTR) = NULL;
  27
  28 #define hFirstModule (pThhook->hExeHead)
  29
  30 static NE_MODULE *pCachedModule = 0;  /* Module cached by NE_OpenFile */
  31
  32 static HMODULE16 NE_LoadBuiltin(LPCSTR name,BOOL32 force) { return 0; }
  33 HMODULE16 (*fnBUILTIN_LoadModule)(LPCSTR name,BOOL32 force) = NE_LoadBuiltin;
  34
  35
  36 /***********************************************************************
  37  *           NE_GetPtr
  38  */
  39 NE_MODULE *NE_GetPtr( HMODULE16 hModule )
  40 {
  41     return (NE_MODULE *)GlobalLock16( GetExePtr(hModule) );
  42 }
  43
  44
  45 /***********************************************************************
  46  *           NE_DumpModule
  47  */
  48 void NE_DumpModule( HMODULE16 hModule )
  49 {
  50     int i, ordinal;
  51     SEGTABLEENTRY *pSeg;
  52     BYTE *pstr;
  53     WORD *pword;
  54     NE_MODULE *pModule;
  55
  56     if (!(pModule = NE_GetPtr( hModule )))
  57     {
  58         MSG( "**** %04x is not a module handle\n", hModule );
  59         return;
  60     }
  61
  62       /* Dump the module info */
  63     DUMP( "---\n" );
  64     DUMP( "Module %04x:\n", hModule );
  65     DUMP( "count=%d flags=%04x heap=%d stack=%d\n",
  66           pModule->count, pModule->flags,
  67           pModule->heap_size, pModule->stack_size );
  68     DUMP( "cs:ip=%04x:%04x ss:sp=%04x:%04x ds=%04x nb seg=%d modrefs=%d\n",
  69           pModule->cs, pModule->ip, pModule->ss, pModule->sp, pModule->dgroup,
  70           pModule->seg_count, pModule->modref_count );
  71     DUMP( "os_flags=%d swap_area=%d version=%04x\n",
  72           pModule->os_flags, pModule->min_swap_area,
  73           pModule->expected_version );
  74     if (pModule->flags & NE_FFLAGS_WIN32)
  75         DUMP( "PE module=%08x\n", pModule->module32 );
  76
  77       /* Dump the file info */
  78     DUMP( "---\n" );
  79     DUMP( "Filename: '%s'\n", NE_MODULE_NAME(pModule) );
  80
  81       /* Dump the segment table */
  82     DUMP( "---\n" );
  83     DUMP( "Segment table:\n" );
  84     pSeg = NE_SEG_TABLE( pModule );
  85     for (i = 0; i < pModule->seg_count; i++, pSeg++)
  86         DUMP( "%02x: pos=%d size=%d flags=%04x minsize=%d hSeg=%04x\n",
  87               i + 1, pSeg->filepos, pSeg->size, pSeg->flags,
  88               pSeg->minsize, pSeg->hSeg );
  89
  90       /* Dump the resource table */
  91     DUMP( "---\n" );
  92     DUMP( "Resource table:\n" );
  93     if (pModule->res_table)
  94     {
  95         pword = (WORD *)((BYTE *)pModule + pModule->res_table);
  96         DUMP( "Alignment: %d\n", *pword++ );
  97         while (*pword)
  98         {
  99             struct resource_typeinfo_s *ptr = (struct resource_typeinfo_s *)pword;
 100             struct resource_nameinfo_s *pname = (struct resource_nameinfo_s *)(ptr + 1);
 101             DUMP( "id=%04x count=%d\n", ptr->type_id, ptr->count );
 102             for (i = 0; i < ptr->count; i++, pname++)
 103                 DUMP( "offset=%d len=%d id=%04x\n",
 104                       pname->offset, pname->length, pname->id );
 105             pword = (WORD *)pname;
 106         }
 107     }
 108     else DUMP( "None\n" );
 109
 110       /* Dump the resident name table */
 111     DUMP( "---\n" );
 112     DUMP( "Resident-name table:\n" );
 113     pstr = (char *)pModule + pModule->name_table;
 114     while (*pstr)
 115     {
 116         DUMP( "%*.*s: %d\n", *pstr, *pstr, pstr + 1,
 117               *(WORD *)(pstr + *pstr + 1) );
 118         pstr += *pstr + 1 + sizeof(WORD);
 119     }
 120
 121       /* Dump the module reference table */
 122     DUMP( "---\n" );
 123     DUMP( "Module ref table:\n" );
 124     if (pModule->modref_table)
 125     {
 126         pword = (WORD *)((BYTE *)pModule + pModule->modref_table);
 127         for (i = 0; i < pModule->modref_count; i++, pword++)
 128         {
 129             char name[10];
 130             GetModuleName( *pword, name, sizeof(name) );
 131             DUMP( "%d: %04x -> '%s'\n", i, *pword, name );
 132         }
 133     }
 134     else DUMP( "None\n" );
 135
 136       /* Dump the entry table */
 137     DUMP( "---\n" );
 138     DUMP( "Entry table:\n" );
 139     pstr = (char *)pModule + pModule->entry_table;
 140     ordinal = 1;
 141     while (*pstr)
 142     {
 143         DUMP( "Bundle %d-%d: %02x\n", ordinal, ordinal + *pstr - 1, pstr[1]);
 144         if (!pstr[1])
 145         {
 146             ordinal += *pstr;
 147             pstr += 2;
 148         }
 149         else if ((BYTE)pstr[1] == 0xff)  /* moveable */
 150         {
 151             i = *pstr;
 152             pstr += 2;
 153             while (i--)
 154             {
 155                 DUMP( "%d: %02x:%04x (moveable)\n",
 156                       ordinal++, pstr[3], *(WORD *)(pstr + 4) );
 157                 pstr += 6;
 158             }
 159         }
 160         else  /* fixed */
 161         {
 162             i = *pstr;
 163             pstr += 2;
 164             while (i--)
 165             {
 166                 DUMP( "%d: %04x (fixed)\n",
 167                       ordinal++, *(WORD *)(pstr + 1) );
 168                 pstr += 3;
 169             }
 170         }
 171     }
 172
 173     /* Dump the non-resident names table */
 174     DUMP( "---\n" );
 175     DUMP( "Non-resident names table:\n" );
 176     if (pModule->nrname_handle)
 177     {
 178         pstr = (char *)GlobalLock16( pModule->nrname_handle );
 179         while (*pstr)
 180         {
 181             DUMP( "%*.*s: %d\n", *pstr, *pstr, pstr + 1,
 182                    *(WORD *)(pstr + *pstr + 1) );
 183             pstr += *pstr + 1 + sizeof(WORD);
 184         }
 185     }
 186     DUMP( "\n" );
 187 }
 188
 189
 190 /***********************************************************************
 191  *           NE_WalkModules
 192  *
 193  * Walk the module list and print the modules.
 194  */
 195 void NE_WalkModules(void)
 196 {
 197     HMODULE16 hModule = hFirstModule;
 198     MSG( "Module Flags Name\n" );
 199     while (hModule)
 200     {
 201         NE_MODULE *pModule = NE_GetPtr( hModule );
 202         if (!pModule)
 203         {
 204             MSG( "Bad module %04x in list\n", hModule );
 205             return;
 206         }
 207         MSG( " %04x  %04x  %.*s\n", hModule, pModule->flags,
 208                  *((char *)pModule + pModule->name_table),
 209                  (char *)pModule + pModule->name_table + 1 );
 210         hModule = pModule->next;
 211     }
 212 }
 213
 214
 215 /**********************************************************************
 216  *           NE_RegisterModule
 217  */
 218 void NE_RegisterModule( NE_MODULE *pModule )
 219 {
 220     pModule->next = hFirstModule;
 221     hFirstModule = pModule->self;
 222 }
 223
 224
 225 /***********************************************************************
 226  *           NE_GetOrdinal
 227  *
 228  * Lookup the ordinal for a given name.
 229  */
 230 WORD NE_GetOrdinal( HMODULE16 hModule, const char *name )
 231 {
 232     unsigned char buffer[256], *cpnt;
 233     BYTE len;
 234     NE_MODULE *pModule;
 235
 236     if (!(pModule = NE_GetPtr( hModule ))) return 0;
 237     assert( !(pModule->flags & NE_FFLAGS_WIN32) );
 238
 239     TRACE( module, "(%04x,'%s')\n", hModule, name );
 240
 241       /* First handle names of the form '#xxxx' */
 242
 243     if (name[0] == '#') return atoi( name + 1 );
 244
 245       /* Now copy and uppercase the string */
 246
 247     strcpy( buffer, name );
 248     CharUpper32A( buffer );
 249     len = strlen( buffer );
 250
 251       /* First search the resident names */
 252
 253     cpnt = (char *)pModule + pModule->name_table;
 254
 255       /* Skip the first entry (module name) */
 256     cpnt += *cpnt + 1 + sizeof(WORD);
 257     while (*cpnt)
 258     {
 259         if (((BYTE)*cpnt == len) && !memcmp( cpnt+1, buffer, len ))
 260         {
 261             TRACE(module, "  Found: ordinal=%d\n",
 262                             *(WORD *)(cpnt + *cpnt + 1) );
 263             return *(WORD *)(cpnt + *cpnt + 1);
 264         }
 265         cpnt += *cpnt + 1 + sizeof(WORD);
 266     }
 267
 268       /* Now search the non-resident names table */
 269
 270     if (!pModule->nrname_handle) return 0;  /* No non-resident table */
 271     cpnt = (char *)GlobalLock16( pModule->nrname_handle );
 272
 273       /* Skip the first entry (module description string) */
 274     cpnt += *cpnt + 1 + sizeof(WORD);
 275     while (*cpnt)
 276     {
 277         if (((BYTE)*cpnt == len) && !memcmp( cpnt+1, buffer, len ))
 278         {
 279             TRACE(module, "  Found: ordinal=%d\n",
 280                             *(WORD *)(cpnt + *cpnt + 1) );
 281             return *(WORD *)(cpnt + *cpnt + 1);
 282         }
 283         cpnt += *cpnt + 1 + sizeof(WORD);
 284     }
 285     return 0;
 286 }
 287
 288
 289 /***********************************************************************
 290  *           NE_GetEntryPoint   (WPROCS.27)
 291  *
 292  * Return the entry point for a given ordinal.
 293  */
 294 FARPROC16 NE_GetEntryPoint( HMODULE16 hModule, WORD ordinal )
 295 {
 296     NE_MODULE *pModule;
 297     WORD curOrdinal = 1;
 298     BYTE *p;
 299     WORD sel, offset;
 300
 301     if (!(pModule = NE_GetPtr( hModule ))) return 0;
 302     assert( !(pModule->flags & NE_FFLAGS_WIN32) );
 303
 304     p = (BYTE *)pModule + pModule->entry_table;
 305     while (*p && (curOrdinal + *p <= ordinal))
 306     {
 307           /* Skipping this bundle */
 308         curOrdinal += *p;
 309         switch(p[1])
 310         {
 311             case 0:    p += 2; break;  /* unused */
 312             case 0xff: p += 2 + *p * 6; break;  /* moveable */
 313             default:   p += 2 + *p * 3; break;  /* fixed */
 314         }
 315     }
 316     if (!*p) return 0;
 317
 318     switch(p[1])
 319     {
 320         case 0:  /* unused */
 321             return 0;
 322         case 0xff:  /* moveable */
 323             p += 2 + 6 * (ordinal - curOrdinal);
 324             sel = p[3];
 325             offset = *(WORD *)(p + 4);
 326             break;
 327         default:  /* fixed */
 328             sel = p[1];
 329             p += 2 + 3 * (ordinal - curOrdinal);
 330             offset = *(WORD *)(p + 1);
 331             break;
 332     }
 333
 334     if (sel == 0xfe) sel = 0xffff;  /* constant entry */
 335     else sel = GlobalHandleToSel(NE_SEG_TABLE(pModule)[sel-1].hSeg);
 336     if (sel==0xffff)
 337         return (FARPROC16)PTR_SEG_OFF_TO_SEGPTR( sel, offset );
 338     if (!fnSNOOP16_GetProcAddress16)
 339         return (FARPROC16)PTR_SEG_OFF_TO_SEGPTR( sel, offset );
 340     else
 341         return (FARPROC16)fnSNOOP16_GetProcAddress16(hModule,ordinal,(FARPROC16)PTR_SEG_OFF_TO_SEGPTR( sel, offset ));
 342 }
 343
 344
 345 /***********************************************************************
 346  *           NE_SetEntryPoint
 347  *
 348  * Change the value of an entry point. Use with caution!
 349  * It can only change the offset value, not the selector.
 350  */
 351 BOOL16 NE_SetEntryPoint( HMODULE16 hModule, WORD ordinal, WORD offset )
 352 {
 353     NE_MODULE *pModule;
 354     WORD curOrdinal = 1;
 355     BYTE *p;
 356
 357     if (!(pModule = NE_GetPtr( hModule ))) return FALSE;
 358     assert( !(pModule->flags & NE_FFLAGS_WIN32) );
 359
 360     p = (BYTE *)pModule + pModule->entry_table;
 361     while (*p && (curOrdinal + *p <= ordinal))
 362     {
 363           /* Skipping this bundle */
 364         curOrdinal += *p;
 365         switch(p[1])
 366         {
 367             case 0:    p += 2; break;  /* unused */
 368             case 0xff: p += 2 + *p * 6; break;  /* moveable */
 369             default:   p += 2 + *p * 3; break;  /* fixed */
 370         }
 371     }
 372     if (!*p) return FALSE;
 373
 374     switch(p[1])
 375     {
 376         case 0:  /* unused */
 377             return FALSE;
 378         case 0xff:  /* moveable */
 379             p += 2 + 6 * (ordinal - curOrdinal);
 380             *(WORD *)(p + 4) = offset;
 381             break;
 382         default:  /* fixed */
 383             p += 2 + 3 * (ordinal - curOrdinal);
 384             *(WORD *)(p + 1) = offset;
 385             break;
 386     }
 387     return TRUE;
 388 }
 389
 390
 391 /***********************************************************************
 392  *           NE_OpenFile
 393  */
 394 int NE_OpenFile( NE_MODULE *pModule )
 395 {
 396     DOS_FULL_NAME full_name;
 397     char *name;
 398
 399     static int cachedfd = -1;
 400
 401     TRACE( module, "(%p) cache: mod=%p fd=%d\n",
 402            pModule, pCachedModule, cachedfd );
 403     if (pCachedModule == pModule) return cachedfd;
 404     close( cachedfd );
 405     pCachedModule = pModule;
 406     name = NE_MODULE_NAME( pModule );
 407     if (!DOSFS_GetFullName( name, TRUE, &full_name ) ||
 408         (cachedfd = open( full_name.long_name, O_RDONLY )) == -1)
 409         MSG( "Can't open file '%s' for module %04x\n", name, pModule->self );
 410     TRACE(module, "opened '%s' -> %d\n",
 411                     name, cachedfd );
 412     return cachedfd;
 413 }
 414
 415
 416 /***********************************************************************
 417  *           NE_LoadExeHeader
 418  */
 419 static HMODULE16 NE_LoadExeHeader( HFILE16 hFile, OFSTRUCT *ofs )
 420 {
 421     IMAGE_DOS_HEADER mz_header;
 422     IMAGE_OS2_HEADER ne_header;
 423     int size;
 424     HMODULE16 hModule;
 425     NE_MODULE *pModule;
 426     BYTE *pData;
 427     char *buffer, *fastload = NULL;
 428     int fastload_offset = 0, fastload_length = 0;
 429
 430   /* Read a block from either the file or the fast-load area. */
 431 #define READ(offset,size,buffer) \
 432        ((fastload && ((offset) >= fastload_offset) && \
 433          ((offset)+(size) <= fastload_offset+fastload_length)) ? \
 434         (memcpy( buffer, fastload+(offset)-fastload_offset, (size) ), TRUE) : \
 435         (_llseek16( hFile, (offset), SEEK_SET), \
 436          _hread16( hFile, (buffer), (size) ) == (size)))
 437
 438     _llseek16( hFile, 0, SEEK_SET );
 439     if ((_hread16(hFile,&mz_header,sizeof(mz_header)) != sizeof(mz_header)) ||
 440         (mz_header.e_magic != IMAGE_DOS_SIGNATURE))
 441         return (HMODULE16)11;  /* invalid exe */
 442
 443     _llseek16( hFile, mz_header.e_lfanew, SEEK_SET );
 444     if (_hread16( hFile, &ne_header, sizeof(ne_header) ) != sizeof(ne_header))
 445         return (HMODULE16)11;  /* invalid exe */
 446
 447     if (ne_header.ne_magic == IMAGE_NT_SIGNATURE) return (HMODULE16)21;  /* win32 exe */
 448     if (ne_header.ne_magic != IMAGE_OS2_SIGNATURE) return (HMODULE16)11;  /* invalid exe */
 449
 450     if (ne_header.ne_magic == IMAGE_OS2_SIGNATURE_LX) {
 451       MSG("Sorry, this is an OS/2 linear executable (LX) file !\n");
 452       return (HMODULE16)12;
 453     }
 454
 455     /* We now have a valid NE header */
 456
 457     size = sizeof(NE_MODULE) +
 458              /* segment table */
 459            ne_header.n_segment_tab * sizeof(SEGTABLEENTRY) +
 460              /* resource table */
 461            ne_header.rname_tab_offset - ne_header.resource_tab_offset +
 462              /* resident names table */
 463            ne_header.moduleref_tab_offset - ne_header.rname_tab_offset +
 464              /* module ref table */
 465            ne_header.n_mod_ref_tab * sizeof(WORD) +
 466              /* imported names table */
 467            ne_header.entry_tab_offset - ne_header.iname_tab_offset +
 468              /* entry table length */
 469            ne_header.entry_tab_length +
 470              /* loaded file info */
 471            sizeof(OFSTRUCT)-sizeof(ofs->szPathName)+strlen(ofs->szPathName)+1;
 472
 473     hModule = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, size );
 474     if (!hModule) return (HMODULE16)11;  /* invalid exe */
 475     FarSetOwner( hModule, hModule );
 476     pModule = (NE_MODULE *)GlobalLock16( hModule );
 477     memcpy( pModule, &ne_header, sizeof(ne_header) );
 478     pModule->count = 0;
 479     pModule->module32 = 0;
 480     pModule->self = hModule;
 481     pModule->self_loading_sel = 0;
 482     pData = (BYTE *)(pModule + 1);
 483
 484     /* Clear internal Wine flags in case they are set in the EXE file */
 485
 486     pModule->flags &= ~(NE_FFLAGS_BUILTIN | NE_FFLAGS_WIN32);
 487
 488     /* Read the fast-load area */
 489
 490     if (ne_header.additional_flags & NE_AFLAGS_FASTLOAD)
 491     {
 492         fastload_offset=ne_header.fastload_offset<<ne_header.align_shift_count;
 493         fastload_length=ne_header.fastload_length<<ne_header.align_shift_count;
 494         TRACE(module, "Using fast-load area offset=%x len=%d\n",
 495                         fastload_offset, fastload_length );
 496         if ((fastload = HeapAlloc( SystemHeap, 0, fastload_length )) != NULL)
 497         {
 498             _llseek16( hFile, fastload_offset, SEEK_SET);
 499             if (_hread16(hFile, fastload, fastload_length) != fastload_length)
 500             {
 501                 HeapFree( SystemHeap, 0, fastload );
 502                 WARN( module, "Error reading fast-load area!\n");
 503                 fastload = NULL;
 504             }
 505         }
 506     }
 507
 508     /* Get the segment table */
 509
 510     pModule->seg_table = (int)pData - (int)pModule;
 511     buffer = HeapAlloc( SystemHeap, 0, ne_header.n_segment_tab *
 512                                       sizeof(struct ne_segment_table_entry_s));
 513     if (buffer)
 514     {
 515         int i;
 516         struct ne_segment_table_entry_s *pSeg;
 517
 518         if (!READ( mz_header.e_lfanew + ne_header.segment_tab_offset,
 519              ne_header.n_segment_tab * sizeof(struct ne_segment_table_entry_s),
 520              buffer ))
 521         {
 522             HeapFree( SystemHeap, 0, buffer );
 523             if (fastload) HeapFree( SystemHeap, 0, fastload );
 524             GlobalFree16( hModule );
 525             return (HMODULE16)11;  /* invalid exe */
 526         }
 527         pSeg = (struct ne_segment_table_entry_s *)buffer;
 528         for (i = ne_header.n_segment_tab; i > 0; i--, pSeg++)
 529         {
 530             memcpy( pData, pSeg, sizeof(*pSeg) );
 531             pData += sizeof(SEGTABLEENTRY);
 532         }
 533         HeapFree( SystemHeap, 0, buffer );
 534     }
 535     else
 536     {
 537         if (fastload) HeapFree( SystemHeap, 0, fastload );
 538         GlobalFree16( hModule );
 539         return (HMODULE16)11;  /* invalid exe */
 540     }
 541
 542     /* Get the resource table */
 543
 544     if (ne_header.resource_tab_offset < ne_header.rname_tab_offset)
 545     {
 546         pModule->res_table = (int)pData - (int)pModule;
 547         if (!READ(mz_header.e_lfanew + ne_header.resource_tab_offset,
 548                   ne_header.rname_tab_offset - ne_header.resource_tab_offset,
 549                   pData )) return (HMODULE16)11;  /* invalid exe */
 550         pData += ne_header.rname_tab_offset - ne_header.resource_tab_offset;
 551         NE_InitResourceHandler( hModule );
 552     }
 553     else pModule->res_table = 0;  /* No resource table */
 554
 555     /* Get the resident names table */
 556
 557     pModule->name_table = (int)pData - (int)pModule;
 558     if (!READ( mz_header.e_lfanew + ne_header.rname_tab_offset,
 559                ne_header.moduleref_tab_offset - ne_header.rname_tab_offset,
 560                pData ))
 561     {
 562         if (fastload) HeapFree( SystemHeap, 0, fastload );
 563         GlobalFree16( hModule );
 564         return (HMODULE16)11;  /* invalid exe */
 565     }
 566     pData += ne_header.moduleref_tab_offset - ne_header.rname_tab_offset;
 567
 568     /* Get the module references table */
 569
 570     if (ne_header.n_mod_ref_tab > 0)
 571     {
 572         pModule->modref_table = (int)pData - (int)pModule;
 573         if (!READ( mz_header.e_lfanew + ne_header.moduleref_tab_offset,
 574                   ne_header.n_mod_ref_tab * sizeof(WORD),
 575                   pData ))
 576         {
 577             if (fastload) HeapFree( SystemHeap, 0, fastload );
 578             GlobalFree16( hModule );
 579             return (HMODULE16)11;  /* invalid exe */
 580         }
 581         pData += ne_header.n_mod_ref_tab * sizeof(WORD);
 582     }
 583     else pModule->modref_table = 0;  /* No module references */
 584
 585     /* Get the imported names table */
 586
 587     pModule->import_table = (int)pData - (int)pModule;
 588     if (!READ( mz_header.e_lfanew + ne_header.iname_tab_offset,
 589                ne_header.entry_tab_offset - ne_header.iname_tab_offset,
 590                pData ))
 591     {
 592         if (fastload) HeapFree( SystemHeap, 0, fastload );
 593         GlobalFree16( hModule );
 594         return (HMODULE16)11;  /* invalid exe */
 595     }
 596     pData += ne_header.entry_tab_offset - ne_header.iname_tab_offset;
 597
 598     /* Get the entry table */
 599
 600     pModule->entry_table = (int)pData - (int)pModule;
 601     if (!READ( mz_header.e_lfanew + ne_header.entry_tab_offset,
 602                ne_header.entry_tab_length,
 603                pData ))
 604     {
 605         if (fastload) HeapFree( SystemHeap, 0, fastload );
 606         GlobalFree16( hModule );
 607         return (HMODULE16)11;  /* invalid exe */
 608     }
 609     pData += ne_header.entry_tab_length;
 610
 611     /* Store the filename information */
 612
 613     pModule->fileinfo = (int)pData - (int)pModule;
 614     size = sizeof(OFSTRUCT)-sizeof(ofs->szPathName)+strlen(ofs->szPathName)+1;
 615     memcpy( pData, ofs, size );
 616     ((OFSTRUCT *)pData)->cBytes = size - 1;
 617     pData += size;
 618
 619     /* Free the fast-load area */
 620
 621 #undef READ
 622     if (fastload) HeapFree( SystemHeap, 0, fastload );
 623
 624     /* Get the non-resident names table */
 625
 626     if (ne_header.nrname_tab_length)
 627     {
 628         pModule->nrname_handle = GLOBAL_Alloc( 0, ne_header.nrname_tab_length,
 629                                                hModule, FALSE, FALSE, FALSE );
 630         if (!pModule->nrname_handle)
 631         {
 632             GlobalFree16( hModule );
 633             return (HMODULE16)11;  /* invalid exe */
 634         }
 635         buffer = GlobalLock16( pModule->nrname_handle );
 636         _llseek16( hFile, ne_header.nrname_tab_offset, SEEK_SET );
 637         if (_hread16( hFile, buffer, ne_header.nrname_tab_length )
 638               != ne_header.nrname_tab_length)
 639         {
 640             GlobalFree16( pModule->nrname_handle );
 641             GlobalFree16( hModule );
 642             return (HMODULE16)11;  /* invalid exe */
 643         }
 644     }
 645     else pModule->nrname_handle = 0;
 646
 647     /* Allocate a segment for the implicitly-loaded DLLs */
 648
 649     if (pModule->modref_count)
 650     {
 651         pModule->dlls_to_init = GLOBAL_Alloc(GMEM_ZEROINIT,
 652                                     (pModule->modref_count+1)*sizeof(HMODULE16),
 653                                     hModule, FALSE, FALSE, FALSE );
 654         if (!pModule->dlls_to_init)
 655         {
 656             if (pModule->nrname_handle) GlobalFree16( pModule->nrname_handle );
 657             GlobalFree16( hModule );
 658             return (HMODULE16)11;  /* invalid exe */
 659         }
 660     }
 661     else pModule->dlls_to_init = 0;
 662
 663     NE_RegisterModule( pModule );
 664     if (fnSNOOP16_RegisterDLL)
 665         fnSNOOP16_RegisterDLL(pModule,ofs->szPathName);
 666     return hModule;
 667 }
 668
 669
 670 /***********************************************************************
 671  *           NE_LoadDLLs
 672  *
 673  * Load all DLLs implicitly linked to a module.
 674  */
 675 static BOOL32 NE_LoadDLLs( NE_MODULE *pModule )
 676 {
 677     int i;
 678     WORD *pModRef = (WORD *)((char *)pModule + pModule->modref_table);
 679     WORD *pDLLs = (WORD *)GlobalLock16( pModule->dlls_to_init );
 680
 681     for (i = 0; i < pModule->modref_count; i++, pModRef++)
 682     {
 683         char buffer[260];
 684         BYTE *pstr = (BYTE *)pModule + pModule->import_table + *pModRef;
 685         memcpy( buffer, pstr + 1, *pstr );
 686         strcpy( buffer + *pstr, ".dll" );
 687         TRACE(module, "Loading '%s'\n", buffer );
 688         if (!(*pModRef = GetModuleHandle16( buffer )))
 689         {
 690             /* If the DLL is not loaded yet, load it and store */
 691             /* its handle in the list of DLLs to initialize.   */
 692             HMODULE16 hDLL;
 693
 694             if ((hDLL = NE_LoadModule( buffer, NULL, TRUE, TRUE )) == 2)
 695             {
 696                 /* file not found */
 697                 char *p;
 698
 699                 /* Try with prepending the path of the current module */
 700                 GetModuleFileName16( pModule->self, buffer, sizeof(buffer) );
 701                 if (!(p = strrchr( buffer, '\\' ))) p = buffer;
 702                 memcpy( p + 1, pstr + 1, *pstr );
 703                 strcpy( p + 1 + *pstr, ".dll" );
 704                 hDLL = NE_LoadModule( buffer, NULL, TRUE, TRUE );
 705             }
 706             if (hDLL < 32)
 707             {
 708                 /* FIXME: cleanup what was done */
 709
 710                 MSG( "Could not load '%s' required by '%.*s', error=%d\n",
 711                      buffer, *((BYTE*)pModule + pModule->name_table),
 712                      (char *)pModule + pModule->name_table + 1, hDLL );
 713                 return FALSE;
 714             }
 715             *pModRef = GetExePtr( hDLL );
 716             *pDLLs++ = *pModRef;
 717         }
 718         else  /* Increment the reference count of the DLL */
 719         {
 720             NE_MODULE *pOldDLL = NE_GetPtr( *pModRef );
 721             if (pOldDLL) pOldDLL->count++;
 722         }
 723     }
 724     return TRUE;
 725 }
 726
 727
 728 /**********************************************************************
 729  *          NE_LoadModule
 730  *
 731  * Implementation of LoadModule16().
 732  */
 733 HINSTANCE16 NE_LoadModule( LPCSTR name, HINSTANCE16 *hPrevInstance,
 734                            BOOL32 implicit, BOOL32 lib_only )
 735 {
 736     HMODULE16 hModule;
 737     HINSTANCE16 hInstance;
 738     NE_MODULE *pModule;
 739     HFILE16 hFile;
 740     OFSTRUCT ofs;
 741
 742     /* Check if the module is already loaded */
 743
 744     if ((hModule = GetModuleHandle16( name )) != 0)
 745     {
 746         HINSTANCE16 prev;
 747         pModule = NE_GetPtr( hModule );
 748         if ( pModule->module32 ) return (HINSTANCE16)21;
 749
 750         hInstance = NE_CreateInstance( pModule, &prev, lib_only );
 751         if (hInstance != prev)  /* not a library */
 752             NE_LoadSegment( pModule, pModule->dgroup );
 753         pModule->count++;
 754         if (hPrevInstance) *hPrevInstance = prev;
 755         return hInstance;
 756     }
 757     if (hPrevInstance) *hPrevInstance = 0;
 758
 759     /* Try to load the built-in first if not disabled */
 760
 761     if ((hModule = fnBUILTIN_LoadModule( name, FALSE ))) return hModule;
 762
 763     if ((hFile = OpenFile16( name, &ofs, OF_READ )) == HFILE_ERROR16)
 764     {
 765         /* Now try the built-in even if disabled */
 766         if ((hModule = fnBUILTIN_LoadModule( name, TRUE )))
 767         {
 768             MSG( "Could not load Windows DLL '%s', using built-in module.\n",
 769                  name );
 770             return hModule;
 771         }
 772         return 2;  /* File not found */
 773     }
 774
 775     /* Create the module structure */
 776
 777     hModule = NE_LoadExeHeader( hFile, &ofs );
 778     _lclose16( hFile );
 779     if (hModule < 32) return hModule;
 780     pModule = NE_GetPtr( hModule );
 781
 782     /* Allocate the segments for this module */
 783
 784     if (!NE_CreateSegments( pModule ) ||
 785         !(hInstance = NE_CreateInstance( pModule, NULL, lib_only )))
 786     {
 787         GlobalFreeAll( hModule );
 788         return 8;  /* Insufficient memory */
 789     }
 790
 791     /* Load the referenced DLLs */
 792
 793     if (!NE_LoadDLLs( pModule ))
 794         return 2;  /* File not found (FIXME: free everything) */
 795
 796     /* Load the segments */
 797
 798     NE_LoadAllSegments( pModule );
 799
 800     /* Fixup the functions prologs */
 801
 802     NE_FixupPrologs( pModule );
 803
 804     /* Make sure the usage count is 1 on the first loading of  */
 805     /* the module, even if it contains circular DLL references */
 806
 807     pModule->count = 1;
 808
 809     /* Call initialization rountines for all loaded DLLs. Note that
 810      * when we load implicitly linked DLLs this will be done by InitTask().
 811      */
 812
 813     if (!implicit && (pModule->flags & NE_FFLAGS_LIBMODULE))
 814         NE_InitializeDLLs( hModule );
 815
 816     return hInstance;
 817 }
 818
 819
 820 /***********************************************************************
 821  *           LoadLibrary   (KERNEL.95)
 822  */
 823 HINSTANCE16 WINAPI LoadLibrary16( LPCSTR libname )
 824 {
 825     HINSTANCE16 handle;
 826     LPCSTR p;
 827     char *new_name;
 828
 829     TRACE(module, "(%08x) %s\n", (int)libname, libname);
 830
 831     /* Check for an extension */
 832
 833     if ((p = strrchr( libname, '.')) && !strchr( p, '/' ) && !strchr( p, '\\'))
 834     {
 835         /* An extension is present -> use the name as is */
 836         return NE_LoadModule( libname, NULL, FALSE, TRUE );
 837     }
 838
 839     /* Now append .dll before loading */
 840
 841     if (!(new_name = HeapAlloc( GetProcessHeap(), 0, strlen(libname) + 4 )))
 842         return 0;
 843     strcpy( new_name, libname );
 844     strcat( new_name, ".dll" );
 845     handle = NE_LoadModule( new_name, NULL, FALSE, TRUE );
 846     HeapFree( GetProcessHeap(), 0, new_name );
 847     return handle;
 848 }
 849
 850
 851 /**********************************************************************
 852  *          MODULE_CallWEP
 853  *
 854  * Call a DLL's WEP, allowing it to shut down.
 855  * FIXME: we always pass the WEP WEP_FREE_DLL, never WEP_SYSTEM_EXIT
 856  */
 857 static BOOL16 MODULE_CallWEP( HMODULE16 hModule )
 858 {
 859     FARPROC16 WEP = (FARPROC16)0;
 860     WORD ordinal = NE_GetOrdinal( hModule, "WEP" );
 861
 862     if (ordinal) WEP = NE_GetEntryPoint( hModule, ordinal );
 863     if (!WEP)
 864     {
 865         WARN(module, "module %04x doesn't have a WEP\n", hModule );
 866         return FALSE;
 867     }
 868     return Callbacks->CallWindowsExitProc( WEP, WEP_FREE_DLL );
 869 }
 870
 871
 872 /**********************************************************************
 873  *          NE_FreeModule
 874  *
 875  * Implementation of FreeModule16().
 876  */
 877 static BOOL16 NE_FreeModule( HMODULE16 hModule, BOOL32 call_wep )
 878 {
 879     HMODULE16 *hPrevModule;
 880     NE_MODULE *pModule;
 881     HMODULE16 *pModRef;
 882     int i;
 883
 884     if (!(pModule = NE_GetPtr( hModule ))) return FALSE;
 885     hModule = pModule->self;
 886
 887     TRACE( module, "%04x count %d\n", hModule, pModule->count );
 888
 889     if (((INT16)(--pModule->count)) > 0 ) return TRUE;
 890     else pModule->count = 0;
 891
 892     if (pModule->flags & NE_FFLAGS_BUILTIN)
 893         return FALSE;  /* Can't free built-in module */
 894
 895     if (call_wep)
 896     {
 897         if (pModule->flags & NE_FFLAGS_LIBMODULE)
 898         {
 899             TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
 900             MODULE_CallWEP( hModule );
 901
 902             /* Free the objects owned by the DLL module */
 903
 904             if (pTask && pTask->userhandler)
 905                 pTask->userhandler( hModule, USIG_DLL_UNLOAD, 0,
 906                                     pTask->hInstance, pTask->hQueue );
 907         }
 908         else
 909             call_wep = FALSE;  /* We are freeing a task -> no more WEPs */
 910     }
 911
 912
 913     /* Clear magic number just in case */
 914
 915     pModule->magic = pModule->self = 0;
 916
 917       /* Remove it from the linked list */
 918
 919     hPrevModule = &hFirstModule;
 920     while (*hPrevModule && (*hPrevModule != hModule))
 921     {
 922         hPrevModule = &(NE_GetPtr( *hPrevModule ))->next;
 923     }
 924     if (*hPrevModule) *hPrevModule = pModule->next;
 925
 926     /* Free the referenced modules */
 927
 928     pModRef = (HMODULE16*)NE_MODULE_TABLE( pModule );
 929     for (i = 0; i < pModule->modref_count; i++, pModRef++)
 930     {
 931         NE_FreeModule( *pModRef, call_wep );
 932     }
 933
 934     /* Free the module storage */
 935
 936     GlobalFreeAll( hModule );
 937
 938     /* Remove module from cache */
 939
 940     if (pCachedModule == pModule) pCachedModule = NULL;
 941     return TRUE;
 942 }
 943
 944
 945 /**********************************************************************
 946  *          FreeModule16    (KERNEL.46)
 947  */
 948 BOOL16 WINAPI FreeModule16( HMODULE16 hModule )
 949 {
 950     return NE_FreeModule( hModule, TRUE );
 951 }
 952
 953
 954 /***********************************************************************
 955  *           FreeLibrary16   (KERNEL.96)
 956  */
 957 void WINAPI FreeLibrary16( HINSTANCE16 handle )
 958 {
 959     TRACE(module,"%04x\n", handle );
 960     FreeModule16( handle );
 961 }
 962
 963
 964 /**********************************************************************
 965  *          GetModuleName    (KERNEL.27)
 966  */
 967 BOOL16 WINAPI GetModuleName( HINSTANCE16 hinst, LPSTR buf, INT16 count )
 968 {
 969     NE_MODULE *pModule;
 970     BYTE *p;
 971
 972     if (!(pModule = NE_GetPtr( hinst ))) return FALSE;
 973     p = (BYTE *)pModule + pModule->name_table;
 974     if (count > *p) count = *p + 1;
 975     if (count > 0)
 976     {
 977         memcpy( buf, p + 1, count - 1 );
 978         buf[count-1] = '\0';
 979     }
 980     return TRUE;
 981 }
 982
 983
 984 /**********************************************************************
 985  *          GetModuleUsage    (KERNEL.48)
 986  */
 987 INT16 WINAPI GetModuleUsage( HINSTANCE16 hModule )
 988 {
 989     NE_MODULE *pModule = NE_GetPtr( hModule );
 990     return pModule ? pModule->count : 0;
 991 }
 992
 993
 994 /**********************************************************************
 995  *          GetExpWinVer    (KERNEL.167)
 996  */
 997 WORD WINAPI GetExpWinVer( HMODULE16 hModule )
 998 {
 999     NE_MODULE *pModule = NE_GetPtr( hModule );
1000     return pModule ? pModule->expected_version : 0;
1001 }
1002
1003
1004 /**********************************************************************
1005  *          GetModuleFileName16    (KERNEL.49)
1006  */
1007 INT16 WINAPI GetModuleFileName16( HINSTANCE16 hModule, LPSTR lpFileName,
1008                                   INT16 nSize )
1009 {
1010     NE_MODULE *pModule;
1011
1012     if (!hModule) hModule = GetCurrentTask();
1013     if (!(pModule = NE_GetPtr( hModule ))) return 0;
1014     lstrcpyn32A( lpFileName, NE_MODULE_NAME(pModule), nSize );
1015     TRACE(module, "%s\n", lpFileName );
1016     return strlen(lpFileName);
1017 }
1018
1019
1020 /**********************************************************************
1021  *          GetModuleHandle16    (KERNEL.47)
1022  *
1023  * Find a module from a path name.
1024  *
1025  * RETURNS
1026  *   LOWORD:
1027  *      the win16 module handle if found
1028  *      0 if not
1029  *   HIWORD (undocumented, see "Undocumented Windows", chapter 5):
1030  *      Always hFirstModule
1031  */
1032 DWORD WINAPI WIN16_GetModuleHandle( SEGPTR name )
1033 {
1034     if (HIWORD(name) == 0)
1035         return MAKELONG(GetExePtr( (HINSTANCE16)name), hFirstModule );
1036     return MAKELONG(GetModuleHandle16( PTR_SEG_TO_LIN(name)), hFirstModule );
1037 }
1038
1039 HMODULE16 WINAPI GetModuleHandle16( LPCSTR name )
1040 {
1041     HMODULE16 hModule = hFirstModule;
1042     LPCSTR filename, dotptr, modulepath, modulename;
1043     BYTE len, *name_table;
1044
1045     if (!(filename = strrchr( name, '\\' ))) filename = name;
1046     else filename++;
1047     if ((dotptr = strrchr( filename, '.' )) != NULL)
1048         len = (BYTE)(dotptr - filename);
1049     else len = strlen( filename );
1050
1051     while (hModule)
1052     {
1053         NE_MODULE *pModule = NE_GetPtr( hModule );
1054         if (!pModule) break;
1055         modulepath = NE_MODULE_NAME(pModule);
1056         if (!(modulename = strrchr( modulepath, '\\' )))
1057             modulename = modulepath;
1058         else modulename++;
1059         if (!lstrcmpi32A( modulename, filename )) return hModule;
1060
1061         name_table = (BYTE *)pModule + pModule->name_table;
1062         if ((*name_table == len) && !lstrncmpi32A(filename, name_table+1, len))
1063             return hModule;
1064         hModule = pModule->next;
1065     }
1066     return 0;
1067 }
1068
1069
1070 /**********************************************************************
1071  *          ModuleFirst    (TOOLHELP.59)
1072  */
1073 BOOL16 WINAPI ModuleFirst( MODULEENTRY *lpme )
1074 {
1075     lpme->wNext = hFirstModule;
1076     return ModuleNext( lpme );
1077 }
1078
1079
1080 /**********************************************************************
1081  *          ModuleNext    (TOOLHELP.60)
1082  */
1083 BOOL16 WINAPI ModuleNext( MODULEENTRY *lpme )
1084 {
1085     NE_MODULE *pModule;
1086     char *name;
1087
1088     if (!lpme->wNext) return FALSE;
1089     if (!(pModule = NE_GetPtr( lpme->wNext ))) return FALSE;
1090     name = (char *)pModule + pModule->name_table;
1091     memcpy( lpme->szModule, name + 1, *name );
1092     lpme->szModule[(BYTE)*name] = '\0';
1093     lpme->hModule = lpme->wNext;
1094     lpme->wcUsage = pModule->count;
1095     strncpy( lpme->szExePath, NE_MODULE_NAME(pModule), MAX_PATH );
1096     lpme->szExePath[MAX_PATH] = '\0';
1097     lpme->wNext = pModule->next;
1098     return TRUE;
1099 }
1100
1101
1102 /**********************************************************************
1103  *          ModuleFindName    (TOOLHELP.61)
1104  */
1105 BOOL16 WINAPI ModuleFindName( MODULEENTRY *lpme, LPCSTR name )
1106 {
1107     lpme->wNext = GetModuleHandle16( name );
1108     return ModuleNext( lpme );
1109 }
1110
1111
1112 /**********************************************************************
1113  *          ModuleFindHandle    (TOOLHELP.62)
1114  */
1115 BOOL16 WINAPI ModuleFindHandle( MODULEENTRY *lpme, HMODULE16 hModule )
1116 {
1117     hModule = GetExePtr( hModule );
1118     lpme->wNext = hModule;
1119     return ModuleNext( lpme );
1120 }
1121
1122 /***************************************************************************
1123  *              MapHModuleLS                    (KERNEL32.520)
1124  */
1125 HMODULE16 WINAPI MapHModuleLS(HMODULE32 hmod) {
1126         NE_MODULE       *pModule;
1127
1128         if (!hmod)
1129                 return ((TDB*)GlobalLock16(GetCurrentTask()))->hInstance;
1130         if (!HIWORD(hmod))
1131                 return hmod; /* we already have a 16 bit module handle */
1132         pModule = (NE_MODULE*)GlobalLock16(hFirstModule);
1133         while (pModule)  {
1134                 if (pModule->module32 == hmod)
1135                         return pModule->self;
1136                 pModule = (NE_MODULE*)GlobalLock16(pModule->next);
1137         }
1138         return 0;
1139 }
1140
1141 /***************************************************************************
1142  *              MapHModuleSL                    (KERNEL32.521)
1143  */
1144 HMODULE32 WINAPI MapHModuleSL(HMODULE16 hmod) {
1145         NE_MODULE       *pModule;
1146
1147         if (!hmod) {
1148                 TDB *pTask = (TDB*)GlobalLock16(GetCurrentTask());
1149
1150                 hmod = pTask->hInstance;
1151         }
1152         pModule = (NE_MODULE*)GlobalLock16(hmod);
1153         if (    (pModule->magic!=IMAGE_OS2_SIGNATURE)   ||
1154                 !(pModule->flags & NE_FFLAGS_WIN32)
1155         )
1156                 return 0;
1157         return pModule->module32;
1158 }
1159
1160 /***************************************************************************
1161  *              MapHInstLS                      (KERNEL32.516)
1162  */
1163 REGS_ENTRYPOINT(MapHInstLS) {
1164         EAX_reg(context) = MapHModuleLS(EAX_reg(context));
1165 }
1166
1167 /***************************************************************************
1168  *              MapHInstLS                      (KERNEL32.518)
1169  */
1170 REGS_ENTRYPOINT(MapHInstSL) {
1171         EAX_reg(context) = MapHModuleSL(EAX_reg(context));
1172 }
1173
1174 /***************************************************************************
1175  *              WIN16_MapHInstLS                (KERNEL.472)
1176  */
1177 VOID WINAPI WIN16_MapHInstLS( CONTEXT *context ) {
1178         EAX_reg(context) = MapHModuleLS(EAX_reg(context));
1179 }
1180
1181 /***************************************************************************
1182  *              WIN16_MapHInstSL                (KERNEL.473)
1183  */
1184 VOID WINAPI WIN16_MapHInstSL( CONTEXT *context ) {
1185         EAX_reg(context) = MapHModuleSL(EAX_reg(context));
1186 }