dlls/shell32/shell.c

   1 /*
   2  *                              Shell Library Functions
   3  *
   4  * Copyright 1998 Marcus Meissner
   5  * Copyright 2002 Eric Pouech
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "config.h"
  23
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <unistd.h>
  27 #include <ctype.h>
  28
  29 #include "windef.h"
  30 #include "winerror.h"
  31 #include "winreg.h"
  32 #include "dlgs.h"
  33 #include "shellapi.h"
  34 #include "shlobj.h"
  35 #include "shlwapi.h"
  36 #include "ddeml.h"
  37
  38 #include "wine/winbase16.h"
  39 #include "wine/winuser16.h"
  40 #include "shell32_main.h"
  41
  42 #include "wine/debug.h"
  43
  44 WINE_DEFAULT_DEBUG_CHANNEL(shell);
  45 WINE_DECLARE_DEBUG_CHANNEL(exec);
  46
  47
  48 typedef struct {     /* structure for dropped files */
  49  WORD     wSize;
  50  POINT16  ptMousePos;
  51  BOOL16   fInNonClientArea;
  52  /* memory block with filenames follows */
  53 } DROPFILESTRUCT16, *LPDROPFILESTRUCT16;
  54
  55 static const char*      lpstrMsgWndCreated = "OTHERWINDOWCREATED";
  56 static const char*      lpstrMsgWndDestroyed = "OTHERWINDOWDESTROYED";
  57 static const char*      lpstrMsgShellActivate = "ACTIVATESHELLWINDOW";
  58
  59 static HWND16   SHELL_hWnd = 0;
  60 static HHOOK    SHELL_hHook = 0;
  61 static UINT16   uMsgWndCreated = 0;
  62 static UINT16   uMsgWndDestroyed = 0;
  63 static UINT16   uMsgShellActivate = 0;
  64 HINSTANCE16     SHELL_hInstance = 0;
  65 HINSTANCE SHELL_hInstance32;
  66 static int SHELL_Attach = 0;
  67
  68 /***********************************************************************
  69  * DllEntryPoint [SHELL.101]
  70  *
  71  * Initialization code for shell.dll. Automatically loads the
  72  * 32-bit shell32.dll to allow thunking up to 32-bit code.
  73  *
  74  * RETURNS:
  75  */
  76 BOOL WINAPI SHELL_DllEntryPoint(DWORD Reason, HINSTANCE16 hInst,
  77                                 WORD ds, WORD HeapSize, DWORD res1, WORD res2)
  78 {
  79     TRACE("(%08lx, %04x, %04x, %04x, %08lx, %04x)\n",
  80           Reason, hInst, ds, HeapSize, res1, res2);
  81
  82     switch(Reason)
  83     {
  84     case DLL_PROCESS_ATTACH:
  85         if (SHELL_Attach++) break;
  86         SHELL_hInstance = hInst;
  87         if(!SHELL_hInstance32)
  88         {
  89             if(!(SHELL_hInstance32 = LoadLibraryA("shell32.dll")))
  90             {
  91                 ERR("Could not load sibling shell32.dll\n");
  92                 return FALSE;
  93             }
  94         }
  95         break;
  96
  97     case DLL_PROCESS_DETACH:
  98         if(!--SHELL_Attach)
  99         {
 100             SHELL_hInstance = 0;
 101             if(SHELL_hInstance32)
 102                 FreeLibrary(SHELL_hInstance32);
 103         }
 104         break;
 105     }
 106     return TRUE;
 107 }
 108
 109 /*************************************************************************
 110  *                              DragAcceptFiles         [SHELL.9]
 111  */
 112 void WINAPI DragAcceptFiles16(HWND16 hWnd, BOOL16 b)
 113 {
 114   DragAcceptFiles(hWnd, b);
 115 }
 116
 117 /*************************************************************************
 118  *                              DragQueryFile           [SHELL.11]
 119  */
 120 UINT16 WINAPI DragQueryFile16(
 121         HDROP16 hDrop,
 122         WORD wFile,
 123         LPSTR lpszFile,
 124         WORD wLength)
 125 {
 126         LPSTR lpDrop;
 127         UINT i = 0;
 128         LPDROPFILESTRUCT16 lpDropFileStruct = (LPDROPFILESTRUCT16) GlobalLock16(hDrop);
 129
 130         TRACE("(%04x, %x, %p, %u)\n", hDrop,wFile,lpszFile,wLength);
 131
 132         if(!lpDropFileStruct) goto end;
 133
 134         lpDrop = (LPSTR) lpDropFileStruct + lpDropFileStruct->wSize;
 135         wFile = (wFile==0xffff) ? 0xffffffff : wFile;
 136
 137         while (i++ < wFile)
 138         {
 139           while (*lpDrop++); /* skip filename */
 140           if (!*lpDrop)
 141           {
 142             i = (wFile == 0xFFFFFFFF) ? i : 0;
 143             goto end;
 144           }
 145         }
 146
 147         i = strlen(lpDrop);
 148         i++;
 149         if (!lpszFile ) goto end;   /* needed buffer size */
 150         i = (wLength > i) ? i : wLength;
 151         lstrcpynA (lpszFile,  lpDrop,  i);
 152 end:
 153         GlobalUnlock16(hDrop);
 154         return i;
 155 }
 156
 157 /*************************************************************************
 158  *                              DragFinish              [SHELL.12]
 159  */
 160 void WINAPI DragFinish16(HDROP16 h)
 161 {
 162     TRACE("\n");
 163     GlobalFree16((HGLOBAL16)h);
 164 }
 165
 166
 167 /*************************************************************************
 168  *                              DragQueryPoint          [SHELL.13]
 169  */
 170 BOOL16 WINAPI DragQueryPoint16(HDROP16 hDrop, POINT16 *p)
 171 {
 172   LPDROPFILESTRUCT16 lpDropFileStruct;
 173   BOOL16           bRet;
 174   TRACE("\n");
 175   lpDropFileStruct = (LPDROPFILESTRUCT16) GlobalLock16(hDrop);
 176
 177   memcpy(p,&lpDropFileStruct->ptMousePos,sizeof(POINT16));
 178   bRet = lpDropFileStruct->fInNonClientArea;
 179
 180   GlobalUnlock16(hDrop);
 181   return bRet;
 182 }
 183
 184 /*************************************************************************
 185  *             FindExecutable   (SHELL.21)
 186  */
 187 HINSTANCE16 WINAPI FindExecutable16( LPCSTR lpFile, LPCSTR lpDirectory,
 188                                      LPSTR lpResult )
 189 { return (HINSTANCE16)FindExecutableA( lpFile, lpDirectory, lpResult );
 190 }
 191
 192
 193 /*************************************************************************
 194  *             AboutDlgProc   (SHELL.33)
 195  */
 196 BOOL16 WINAPI AboutDlgProc16( HWND16 hWnd, UINT16 msg, WPARAM16 wParam,
 197                                LPARAM lParam )
 198 { return AboutDlgProc( hWnd, msg, wParam, lParam );
 199 }
 200
 201
 202 /*************************************************************************
 203  *             ShellAbout   (SHELL.22)
 204  */
 205 BOOL16 WINAPI ShellAbout16( HWND16 hWnd, LPCSTR szApp, LPCSTR szOtherStuff,
 206                             HICON16 hIcon )
 207 { return ShellAboutA( hWnd, szApp, szOtherStuff, hIcon );
 208 }
 209
 210 /*************************************************************************
 211  *                      InternalExtractIcon             [SHELL.39]
 212  *
 213  * This abortion is called directly by Progman
 214  */
 215 HGLOBAL16 WINAPI InternalExtractIcon16(HINSTANCE16 hInstance,
 216                                      LPCSTR lpszExeFileName, UINT16 nIconIndex, WORD n )
 217 {
 218     HGLOBAL16 hRet = 0;
 219     HICON16 *RetPtr = NULL;
 220     OFSTRUCT ofs;
 221     HFILE hFile;
 222
 223         TRACE("(%04x,file %s,start %d,extract %d\n",
 224                        hInstance, lpszExeFileName, nIconIndex, n);
 225
 226         if( !n )
 227           return 0;
 228
 229         hFile = OpenFile( lpszExeFileName, &ofs, OF_READ|OF_EXIST );
 230
 231         hRet = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, sizeof(HICON16)*n);
 232         RetPtr = (HICON16*)GlobalLock16(hRet);
 233
 234         if (hFile == HFILE_ERROR)
 235         { /* not found - load from builtin module if available */
 236           HINSTANCE hInst = (HINSTANCE)LoadLibrary16(lpszExeFileName);
 237
 238           if (hInst < 32) /* hmm, no Win16 module - try Win32 :-) */
 239             hInst = LoadLibraryA(lpszExeFileName);
 240           if (hInst)
 241           {
 242             int i;
 243             for (i=nIconIndex; i < nIconIndex + n; i++)
 244               RetPtr[i-nIconIndex] =
 245                       (HICON16)LoadIconA(hInst, (LPCSTR)(DWORD)i);
 246             FreeLibrary(hInst);
 247             return hRet;
 248           }
 249           GlobalFree16( hRet );
 250           return 0;
 251         }
 252
 253         if (nIconIndex == (UINT16)-1)  /* get number of icons */
 254         {
 255             RetPtr[0] = PrivateExtractIconsA( ofs.szPathName, -1, 0, 0, NULL, 0, 0, 0 );
 256         }
 257         else
 258         {
 259             HRESULT res;
 260             HICON *icons;
 261             icons = HeapAlloc( GetProcessHeap(), 0, n * sizeof(*icons) );
 262             res = PrivateExtractIconsA( ofs.szPathName, nIconIndex,
 263                                         GetSystemMetrics(SM_CXICON),
 264                                         GetSystemMetrics(SM_CYICON),
 265                                         icons, 0, n, 0 );
 266             if (!res)
 267             {
 268                 int i;
 269                 for (i = 0; i < n; i++) RetPtr[i] = (HICON16)icons[i];
 270             }
 271             else
 272             {
 273                 GlobalFree16( hRet );
 274                 hRet = 0;
 275             }
 276             HeapFree( GetProcessHeap(), 0, icons );
 277         }
 278         return hRet;
 279 }
 280
 281 /*************************************************************************
 282  *             ExtractIcon   (SHELL.34)
 283  */
 284 HICON16 WINAPI ExtractIcon16( HINSTANCE16 hInstance, LPCSTR lpszExeFileName,
 285         UINT16 nIconIndex )
 286 {   TRACE("\n");
 287     return ExtractIconA( hInstance, lpszExeFileName, nIconIndex );
 288 }
 289
 290 /*************************************************************************
 291  *             ExtractIconEx   (SHELL.40)
 292  */
 293 HICON16 WINAPI ExtractIconEx16(
 294         LPCSTR lpszFile, INT16 nIconIndex, HICON16 *phiconLarge,
 295         HICON16 *phiconSmall, UINT16 nIcons
 296 ) {
 297     HICON       *ilarge,*ismall;
 298     UINT16      ret;
 299     int         i;
 300
 301     if (phiconLarge)
 302         ilarge = (HICON*)HeapAlloc(GetProcessHeap(),0,nIcons*sizeof(HICON));
 303     else
 304         ilarge = NULL;
 305     if (phiconSmall)
 306         ismall = (HICON*)HeapAlloc(GetProcessHeap(),0,nIcons*sizeof(HICON));
 307     else
 308         ismall = NULL;
 309     ret = ExtractIconExA(lpszFile,nIconIndex,ilarge,ismall,nIcons);
 310     if (ilarge) {
 311         for (i=0;i<nIcons;i++)
 312             phiconLarge[i]=ilarge[i];
 313         HeapFree(GetProcessHeap(),0,ilarge);
 314     }
 315     if (ismall) {
 316         for (i=0;i<nIcons;i++)
 317             phiconSmall[i]=ismall[i];
 318         HeapFree(GetProcessHeap(),0,ismall);
 319     }
 320     return ret;
 321 }
 322
 323 /*************************************************************************
 324  *                              ExtractAssociatedIcon   [SHELL.36]
 325  *
 326  * Return icon for given file (either from file itself or from associated
 327  * executable) and patch parameters if needed.
 328  */
 329 HICON16 WINAPI ExtractAssociatedIcon16(HINSTANCE16 hInst, LPSTR lpIconPath, LPWORD lpiIcon)
 330 {       HICON16 hIcon;
 331         WORD wDummyIcon = 0;
 332
 333         TRACE("\n");
 334
 335         if(lpiIcon == NULL)
 336             lpiIcon = &wDummyIcon;
 337
 338         hIcon = ExtractIcon16(hInst, lpIconPath, *lpiIcon);
 339
 340         if( hIcon < 2 )
 341         { if( hIcon == 1 ) /* no icons found in given file */
 342           { char  tempPath[0x80];
 343             UINT16  uRet = FindExecutable16(lpIconPath,NULL,tempPath);
 344
 345             if( uRet > 32 && tempPath[0] )
 346             { strcpy(lpIconPath,tempPath);
 347               hIcon = ExtractIcon16(hInst, lpIconPath, *lpiIcon);
 348               if( hIcon > 2 )
 349                 return hIcon;
 350             }
 351             else hIcon = 0;
 352           }
 353
 354           if( hIcon == 1 )
 355             *lpiIcon = 2;   /* MSDOS icon - we found .exe but no icons in it */
 356           else
 357             *lpiIcon = 6;   /* generic icon - found nothing */
 358
 359           GetModuleFileName16(hInst, lpIconPath, 0x80);
 360           hIcon = LoadIconA( hInst, MAKEINTRESOURCEA(*lpiIcon));
 361         }
 362         return hIcon;
 363 }
 364
 365 /*************************************************************************
 366  *                              ExtractAssociatedIconA (SHELL32.@)
 367  *
 368  * Return icon for given file (either from file itself or from associated
 369  * executable) and patch parameters if needed.
 370  */
 371 HICON WINAPI ExtractAssociatedIconA(HINSTANCE hInst, LPSTR lpIconPath, LPWORD lpiIcon)
 372 {       TRACE("\n");
 373         return ExtractAssociatedIcon16(hInst,lpIconPath,lpiIcon);
 374 }
 375
 376 /*************************************************************************
 377  *                              ExtractAssociatedIconExW (SHELL32.@)
 378  *
 379  * Return icon for given file (either from file itself or from associated
 380  * executable) and patch parameters if needed.
 381  */
 382 HICON WINAPI ExtractAssociatedIconExW(DWORD d1, DWORD d2, DWORD d3, DWORD d4)
 383 {
 384   FIXME("(%lx %lx %lx %lx): stub\n", d1, d2, d3, d4);
 385   return 0;
 386 }
 387
 388 /*************************************************************************
 389  *                              FindEnvironmentString   [SHELL.38]
 390  *
 391  * Returns a pointer into the DOS environment... Ugh.
 392  */
 393 LPSTR SHELL_FindString(LPSTR lpEnv, LPCSTR entry)
 394 { UINT16 l;
 395
 396   TRACE("\n");
 397
 398   l = strlen(entry);
 399   for( ; *lpEnv ; lpEnv+=strlen(lpEnv)+1 )
 400   { if( strncasecmp(lpEnv, entry, l) )
 401       continue;
 402         if( !*(lpEnv+l) )
 403             return (lpEnv + l);                 /* empty entry */
 404         else if ( *(lpEnv+l)== '=' )
 405             return (lpEnv + l + 1);
 406     }
 407     return NULL;
 408 }
 409
 410 /**********************************************************************/
 411
 412 SEGPTR WINAPI FindEnvironmentString16(LPSTR str)
 413 { SEGPTR  spEnv;
 414   LPSTR lpEnv,lpString;
 415   TRACE("\n");
 416
 417   spEnv = GetDOSEnvironment16();
 418
 419   lpEnv = MapSL(spEnv);
 420   lpString = (spEnv)?SHELL_FindString(lpEnv, str):NULL;
 421
 422     if( lpString )              /*  offset should be small enough */
 423         return spEnv + (lpString - lpEnv);
 424     return (SEGPTR)NULL;
 425 }
 426
 427 /*************************************************************************
 428  *                              DoEnvironmentSubst      [SHELL.37]
 429  *
 430  * Replace %KEYWORD% in the str with the value of variable KEYWORD
 431  * from "DOS" environment.
 432  */
 433 DWORD WINAPI DoEnvironmentSubst16(LPSTR str,WORD length)
 434 {
 435   LPSTR   lpEnv = MapSL(GetDOSEnvironment16());
 436   LPSTR   lpBuffer = (LPSTR)HeapAlloc( GetProcessHeap(), 0, length);
 437   LPSTR   lpstr = str;
 438   LPSTR   lpbstr = lpBuffer;
 439
 440   CharToOemA(str,str);
 441
 442   TRACE("accept %s\n", str);
 443
 444   while( *lpstr && lpbstr - lpBuffer < length )
 445    {
 446      LPSTR lpend = lpstr;
 447
 448      if( *lpstr == '%' )
 449        {
 450           do { lpend++; } while( *lpend && *lpend != '%' );
 451           if( *lpend == '%' && lpend - lpstr > 1 )      /* found key */
 452             {
 453                LPSTR lpKey;
 454               *lpend = '\0';
 455                lpKey = SHELL_FindString(lpEnv, lpstr+1);
 456                if( lpKey )                              /* found key value */
 457                  {
 458                    int l = strlen(lpKey);
 459
 460                    if( l > length - (lpbstr - lpBuffer) - 1 )
 461                      {
 462            WARN("-- Env subst aborted - string too short\n");
 463                       *lpend = '%';
 464                        break;
 465                      }
 466                    strcpy(lpbstr, lpKey);
 467                    lpbstr += l;
 468                  }
 469                else break;
 470               *lpend = '%';
 471                lpstr = lpend + 1;
 472             }
 473           else break;                                   /* back off and whine */
 474
 475           continue;
 476        }
 477
 478      *lpbstr++ = *lpstr++;
 479    }
 480
 481  *lpbstr = '\0';
 482   if( lpstr - str == strlen(str) )
 483     {
 484       strncpy(str, lpBuffer, length);
 485       length = 1;
 486     }
 487   else
 488       length = 0;
 489
 490   TRACE("-- return %s\n", str);
 491
 492   OemToCharA(str,str);
 493   HeapFree( GetProcessHeap(), 0, lpBuffer);
 494
 495   /*  Return str length in the LOWORD
 496    *  and 1 in HIWORD if subst was successful.
 497    */
 498  return (DWORD)MAKELONG(strlen(str), length);
 499 }
 500
 501 /*************************************************************************
 502  *                              ShellHookProc           [SHELL.103]
 503  * System-wide WH_SHELL hook.
 504  */
 505 LRESULT WINAPI ShellHookProc16(INT16 code, WPARAM16 wParam, LPARAM lParam)
 506 {
 507     TRACE("%i, %04x, %08x\n", code, wParam,
 508                                                       (unsigned)lParam );
 509     if( SHELL_hHook && SHELL_hWnd )
 510     {
 511         UINT16  uMsg = 0;
 512         switch( code )
 513         {
 514             case HSHELL_WINDOWCREATED:          uMsg = uMsgWndCreated;   break;
 515             case HSHELL_WINDOWDESTROYED:        uMsg = uMsgWndDestroyed; break;
 516             case HSHELL_ACTIVATESHELLWINDOW:    uMsg = uMsgShellActivate;
 517         }
 518         PostMessageA( SHELL_hWnd, uMsg, wParam, 0 );
 519     }
 520     return CallNextHookEx16( WH_SHELL, code, wParam, lParam );
 521 }
 522
 523 /*************************************************************************
 524  *                              RegisterShellHook       [SHELL.102]
 525  */
 526 BOOL WINAPI RegisterShellHook16(HWND16 hWnd, UINT16 uAction)
 527 {
 528     TRACE("%04x [%u]\n", hWnd, uAction );
 529
 530     switch( uAction )
 531     {
 532     case 2:  /* register hWnd as a shell window */
 533         if( !SHELL_hHook )
 534         {
 535             HMODULE16 hShell = GetModuleHandle16( "SHELL" );
 536             HOOKPROC16 hookProc = (HOOKPROC16)GetProcAddress16( hShell, (LPCSTR)103 );
 537             SHELL_hHook = SetWindowsHookEx16( WH_SHELL, hookProc, hShell, 0 );
 538             if ( SHELL_hHook )
 539             {
 540                 uMsgWndCreated = RegisterWindowMessageA( lpstrMsgWndCreated );
 541                 uMsgWndDestroyed = RegisterWindowMessageA( lpstrMsgWndDestroyed );
 542                 uMsgShellActivate = RegisterWindowMessageA( lpstrMsgShellActivate );
 543             }
 544             else
 545                 WARN("-- unable to install ShellHookProc()!\n");
 546         }
 547
 548         if ( SHELL_hHook )
 549             return ((SHELL_hWnd = hWnd) != 0);
 550         break;
 551
 552     default:
 553         WARN("-- unknown code %i\n", uAction );
 554         SHELL_hWnd = 0; /* just in case */
 555     }
 556     return FALSE;
 557 }
 558
 559
 560 /***********************************************************************
 561  *           DriveType   (SHELL.262)
 562  */
 563 UINT16 WINAPI DriveType16( UINT16 drive )
 564 {
 565     UINT ret;
 566     char path[] = "A:\\";
 567     path[0] += drive;
 568     ret = GetDriveTypeA(path);
 569     switch(ret)  /* some values are not supported in Win16 */
 570     {
 571     case DRIVE_CDROM:
 572         ret = DRIVE_REMOTE;
 573         break;
 574     case DRIVE_NO_ROOT_DIR:
 575         ret = DRIVE_UNKNOWN;
 576         break;
 577     }
 578     return ret;
 579 }