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 #include "wine/port.h"
  24
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #ifdef HAVE_UNISTD_H
  28 # include <unistd.h>
  29 #endif
  30 #include <ctype.h>
  31
  32 #include "windef.h"
  33 #include "winerror.h"
  34 #include "winreg.h"
  35 #include "wownt32.h"
  36 #include "dlgs.h"
  37 #include "shellapi.h"
  38 #include "shlobj.h"
  39 #include "shlwapi.h"
  40 #include "ddeml.h"
  41
  42 #include "wine/winbase16.h"
  43 #include "wine/winuser16.h"
  44 #include "shell32_main.h"
  45
  46 #include "wine/debug.h"
  47
  48 WINE_DEFAULT_DEBUG_CHANNEL(shell);
  49 WINE_DECLARE_DEBUG_CHANNEL(exec);
  50
  51
  52 typedef struct {     /* structure for dropped files */
  53  WORD     wSize;
  54  POINT16  ptMousePos;
  55  BOOL16   fInNonClientArea;
  56  /* memory block with filenames follows */
  57 } DROPFILESTRUCT16, *LPDROPFILESTRUCT16;
  58
  59 static const char*      lpstrMsgWndCreated = "OTHERWINDOWCREATED";
  60 static const char*      lpstrMsgWndDestroyed = "OTHERWINDOWDESTROYED";
  61 static const char*      lpstrMsgShellActivate = "ACTIVATESHELLWINDOW";
  62
  63 static HWND16   SHELL_hWnd = 0;
  64 static HHOOK    SHELL_hHook = 0;
  65 static UINT16   uMsgWndCreated = 0;
  66 static UINT16   uMsgWndDestroyed = 0;
  67 static UINT16   uMsgShellActivate = 0;
  68 HINSTANCE16     SHELL_hInstance = 0;
  69 HINSTANCE SHELL_hInstance32;
  70 static int SHELL_Attach = 0;
  71
  72 /***********************************************************************
  73  * DllEntryPoint [SHELL.101]
  74  *
  75  * Initialization code for shell.dll. Automatically loads the
  76  * 32-bit shell32.dll to allow thunking up to 32-bit code.
  77  *
  78  * RETURNS:
  79  */
  80 BOOL WINAPI SHELL_DllEntryPoint(DWORD Reason, HINSTANCE16 hInst,
  81                                 WORD ds, WORD HeapSize, DWORD res1, WORD res2)
  82 {
  83     TRACE("(%08lx, %04x, %04x, %04x, %08lx, %04x)\n",
  84           Reason, hInst, ds, HeapSize, res1, res2);
  85
  86     switch(Reason)
  87     {
  88     case DLL_PROCESS_ATTACH:
  89         if (SHELL_Attach++) break;
  90         SHELL_hInstance = hInst;
  91         if(!SHELL_hInstance32)
  92         {
  93             if(!(SHELL_hInstance32 = LoadLibraryA("shell32.dll")))
  94             {
  95                 ERR("Could not load sibling shell32.dll\n");
  96                 return FALSE;
  97             }
  98         }
  99         break;
 100
 101     case DLL_PROCESS_DETACH:
 102         if(!--SHELL_Attach)
 103         {
 104             SHELL_hInstance = 0;
 105             if(SHELL_hInstance32)
 106                 FreeLibrary(SHELL_hInstance32);
 107         }
 108         break;
 109     }
 110     return TRUE;
 111 }
 112
 113 /*************************************************************************
 114  *                              DragAcceptFiles         [SHELL.9]
 115  */
 116 void WINAPI DragAcceptFiles16(HWND16 hWnd, BOOL16 b)
 117 {
 118   DragAcceptFiles(HWND_32(hWnd), b);
 119 }
 120
 121 /*************************************************************************
 122  *                              DragQueryFile           [SHELL.11]
 123  */
 124 UINT16 WINAPI DragQueryFile16(
 125         HDROP16 hDrop,
 126         WORD wFile,
 127         LPSTR lpszFile,
 128         WORD wLength)
 129 {
 130         LPSTR lpDrop;
 131         UINT i = 0;
 132         LPDROPFILESTRUCT16 lpDropFileStruct = (LPDROPFILESTRUCT16) GlobalLock16(hDrop);
 133
 134         TRACE("(%04x, %x, %p, %u)\n", hDrop,wFile,lpszFile,wLength);
 135
 136         if(!lpDropFileStruct) goto end;
 137
 138         lpDrop = (LPSTR) lpDropFileStruct + lpDropFileStruct->wSize;
 139         wFile = (wFile==0xffff) ? 0xffffffff : wFile;
 140
 141         while (i++ < wFile)
 142         {
 143           while (*lpDrop++); /* skip filename */
 144           if (!*lpDrop)
 145           {
 146             i = (wFile == 0xFFFFFFFF) ? i : 0;
 147             goto end;
 148           }
 149         }
 150
 151         i = strlen(lpDrop);
 152         i++;
 153         if (!lpszFile ) goto end;   /* needed buffer size */
 154         i = (wLength > i) ? i : wLength;
 155         lstrcpynA (lpszFile,  lpDrop,  i);
 156 end:
 157         GlobalUnlock16(hDrop);
 158         return i;
 159 }
 160
 161 /*************************************************************************
 162  *                              DragFinish              [SHELL.12]
 163  */
 164 void WINAPI DragFinish16(HDROP16 h)
 165 {
 166     TRACE("\n");
 167     GlobalFree16((HGLOBAL16)h);
 168 }
 169
 170
 171 /*************************************************************************
 172  *                              DragQueryPoint          [SHELL.13]
 173  */
 174 BOOL16 WINAPI DragQueryPoint16(HDROP16 hDrop, POINT16 *p)
 175 {
 176   LPDROPFILESTRUCT16 lpDropFileStruct;
 177   BOOL16           bRet;
 178   TRACE("\n");
 179   lpDropFileStruct = (LPDROPFILESTRUCT16) GlobalLock16(hDrop);
 180
 181   memcpy(p,&lpDropFileStruct->ptMousePos,sizeof(POINT16));
 182   bRet = lpDropFileStruct->fInNonClientArea;
 183
 184   GlobalUnlock16(hDrop);
 185   return bRet;
 186 }
 187
 188 /*************************************************************************
 189  *             FindExecutable   (SHELL.21)
 190  */
 191 HINSTANCE16 WINAPI FindExecutable16( LPCSTR lpFile, LPCSTR lpDirectory,
 192                                      LPSTR lpResult )
 193 { return (HINSTANCE16)FindExecutableA( lpFile, lpDirectory, lpResult );
 194 }
 195
 196
 197 /*************************************************************************
 198  *             AboutDlgProc   (SHELL.33)
 199  */
 200 BOOL16 WINAPI AboutDlgProc16( HWND16 hWnd, UINT16 msg, WPARAM16 wParam,
 201                                LPARAM lParam )
 202 { return AboutDlgProc( HWND_32(hWnd), msg, wParam, lParam );
 203 }
 204
 205
 206 /*************************************************************************
 207  *             ShellAbout   (SHELL.22)
 208  */
 209 BOOL16 WINAPI ShellAbout16( HWND16 hWnd, LPCSTR szApp, LPCSTR szOtherStuff,
 210                             HICON16 hIcon )
 211 { return ShellAboutA( HWND_32(hWnd), szApp, szOtherStuff, HICON_32(hIcon) );
 212 }
 213
 214 /*************************************************************************
 215  *                      InternalExtractIcon             [SHELL.39]
 216  *
 217  * This abortion is called directly by Progman
 218  */
 219 HGLOBAL16 WINAPI InternalExtractIcon16(HINSTANCE16 hInstance,
 220                                      LPCSTR lpszExeFileName, UINT16 nIconIndex, WORD n )
 221 {
 222     HGLOBAL16 hRet = 0;
 223     HICON16 *RetPtr = NULL;
 224     OFSTRUCT ofs;
 225     HFILE hFile;
 226
 227         TRACE("(%04x,file %s,start %d,extract %d\n",
 228                        hInstance, lpszExeFileName, nIconIndex, n);
 229
 230         if( !n )
 231           return 0;
 232
 233         hFile = OpenFile( lpszExeFileName, &ofs, OF_READ|OF_EXIST );
 234
 235         hRet = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, sizeof(HICON16)*n);
 236         RetPtr = (HICON16*)GlobalLock16(hRet);
 237
 238         if (hFile == HFILE_ERROR)
 239         { /* not found - load from builtin module if available */
 240           HINSTANCE hInst = (HINSTANCE)LoadLibrary16(lpszExeFileName);
 241
 242           if (hInst < 32) /* hmm, no Win16 module - try Win32 :-) */
 243             hInst = LoadLibraryA(lpszExeFileName);
 244           if (hInst)
 245           {
 246             int i;
 247             for (i=nIconIndex; i < nIconIndex + n; i++)
 248               RetPtr[i-nIconIndex] =
 249                       HICON_16(LoadIconA(hInst, (LPCSTR)(DWORD)i));
 250             FreeLibrary(hInst);
 251             return hRet;
 252           }
 253           GlobalFree16( hRet );
 254           return 0;
 255         }
 256
 257         if (nIconIndex == (UINT16)-1)  /* get number of icons */
 258         {
 259             RetPtr[0] = PrivateExtractIconsA( ofs.szPathName, -1, 0, 0, NULL, 0, 0, 0 );
 260         }
 261         else
 262         {
 263             HRESULT res;
 264             HICON *icons;
 265             icons = HeapAlloc( GetProcessHeap(), 0, n * sizeof(*icons) );
 266             res = PrivateExtractIconsA( ofs.szPathName, nIconIndex,
 267                                         GetSystemMetrics(SM_CXICON),
 268                                         GetSystemMetrics(SM_CYICON),
 269                                         icons, 0, n, 0 );
 270             if (!res)
 271             {
 272                 int i;
 273                 for (i = 0; i < n; i++) RetPtr[i] = HICON_16(icons[i]);
 274             }
 275             else
 276             {
 277                 GlobalFree16( hRet );
 278                 hRet = 0;
 279             }
 280             HeapFree( GetProcessHeap(), 0, icons );
 281         }
 282         return hRet;
 283 }
 284
 285 /*************************************************************************
 286  *             ExtractIcon   (SHELL.34)
 287  */
 288 HICON16 WINAPI ExtractIcon16( HINSTANCE16 hInstance, LPCSTR lpszExeFileName,
 289         UINT16 nIconIndex )
 290 {   TRACE("\n");
 291     return HICON_16(ExtractIconA(HINSTANCE_32(hInstance), lpszExeFileName, nIconIndex));
 292 }
 293
 294 /*************************************************************************
 295  *             ExtractIconEx   (SHELL.40)
 296  */
 297 HICON16 WINAPI ExtractIconEx16(
 298         LPCSTR lpszFile, INT16 nIconIndex, HICON16 *phiconLarge,
 299         HICON16 *phiconSmall, UINT16 nIcons
 300 ) {
 301     HICON       *ilarge,*ismall;
 302     UINT16      ret;
 303     int         i;
 304
 305     if (phiconLarge)
 306         ilarge = (HICON*)HeapAlloc(GetProcessHeap(),0,nIcons*sizeof(HICON));
 307     else
 308         ilarge = NULL;
 309     if (phiconSmall)
 310         ismall = (HICON*)HeapAlloc(GetProcessHeap(),0,nIcons*sizeof(HICON));
 311     else
 312         ismall = NULL;
 313     ret = HICON_16(ExtractIconExA(lpszFile,nIconIndex,ilarge,ismall,nIcons));
 314     if (ilarge) {
 315         for (i=0;i<nIcons;i++)
 316             phiconLarge[i]=HICON_16(ilarge[i]);
 317         HeapFree(GetProcessHeap(),0,ilarge);
 318     }
 319     if (ismall) {
 320         for (i=0;i<nIcons;i++)
 321             phiconSmall[i]=HICON_16(ismall[i]);
 322         HeapFree(GetProcessHeap(),0,ismall);
 323     }
 324     return ret;
 325 }
 326
 327 /*************************************************************************
 328  *                              ExtractAssociatedIcon   [SHELL.36]
 329  *
 330  * Return icon for given file (either from file itself or from associated
 331  * executable) and patch parameters if needed.
 332  */
 333 HICON16 WINAPI ExtractAssociatedIcon16(HINSTANCE16 hInst, LPSTR lpIconPath, LPWORD lpiIcon)
 334 {
 335     return HICON_16(ExtractAssociatedIconA(HINSTANCE_32(hInst), lpIconPath,
 336                     lpiIcon));
 337 }
 338
 339 /*************************************************************************
 340  *                              FindEnvironmentString   [SHELL.38]
 341  *
 342  * Returns a pointer into the DOS environment... Ugh.
 343  */
 344 LPSTR SHELL_FindString(LPSTR lpEnv, LPCSTR entry)
 345 { UINT16 l;
 346
 347   TRACE("\n");
 348
 349   l = strlen(entry);
 350   for( ; *lpEnv ; lpEnv+=strlen(lpEnv)+1 )
 351   { if( strncasecmp(lpEnv, entry, l) )
 352       continue;
 353         if( !*(lpEnv+l) )
 354             return (lpEnv + l);                 /* empty entry */
 355         else if ( *(lpEnv+l)== '=' )
 356             return (lpEnv + l + 1);
 357     }
 358     return NULL;
 359 }
 360
 361 /**********************************************************************/
 362
 363 SEGPTR WINAPI FindEnvironmentString16(LPSTR str)
 364 { SEGPTR  spEnv;
 365   LPSTR lpEnv,lpString;
 366   TRACE("\n");
 367
 368   spEnv = GetDOSEnvironment16();
 369
 370   lpEnv = MapSL(spEnv);
 371   lpString = (spEnv)?SHELL_FindString(lpEnv, str):NULL;
 372
 373     if( lpString )              /*  offset should be small enough */
 374         return spEnv + (lpString - lpEnv);
 375     return (SEGPTR)NULL;
 376 }
 377
 378 /*************************************************************************
 379  *                              DoEnvironmentSubst      [SHELL.37]
 380  *
 381  * Replace %KEYWORD% in the str with the value of variable KEYWORD
 382  * from "DOS" environment.
 383  */
 384 DWORD WINAPI DoEnvironmentSubst16(LPSTR str,WORD length)
 385 {
 386   LPSTR   lpEnv = MapSL(GetDOSEnvironment16());
 387   LPSTR   lpBuffer = (LPSTR)HeapAlloc( GetProcessHeap(), 0, length);
 388   LPSTR   lpstr = str;
 389   LPSTR   lpbstr = lpBuffer;
 390
 391   CharToOemA(str,str);
 392
 393   TRACE("accept %s\n", str);
 394
 395   while( *lpstr && lpbstr - lpBuffer < length )
 396    {
 397      LPSTR lpend = lpstr;
 398
 399      if( *lpstr == '%' )
 400        {
 401           do { lpend++; } while( *lpend && *lpend != '%' );
 402           if( *lpend == '%' && lpend - lpstr > 1 )      /* found key */
 403             {
 404                LPSTR lpKey;
 405               *lpend = '\0';
 406                lpKey = SHELL_FindString(lpEnv, lpstr+1);
 407                if( lpKey )                              /* found key value */
 408                  {
 409                    int l = strlen(lpKey);
 410
 411                    if( l > length - (lpbstr - lpBuffer) - 1 )
 412                      {
 413            WARN("-- Env subst aborted - string too short\n");
 414                       *lpend = '%';
 415                        break;
 416                      }
 417                    strcpy(lpbstr, lpKey);
 418                    lpbstr += l;
 419                  }
 420                else break;
 421               *lpend = '%';
 422                lpstr = lpend + 1;
 423             }
 424           else break;                                   /* back off and whine */
 425
 426           continue;
 427        }
 428
 429      *lpbstr++ = *lpstr++;
 430    }
 431
 432  *lpbstr = '\0';
 433   if( lpstr - str == strlen(str) )
 434     {
 435       strncpy(str, lpBuffer, length);
 436       length = 1;
 437     }
 438   else
 439       length = 0;
 440
 441   TRACE("-- return %s\n", str);
 442
 443   OemToCharA(str,str);
 444   HeapFree( GetProcessHeap(), 0, lpBuffer);
 445
 446   /*  Return str length in the LOWORD
 447    *  and 1 in HIWORD if subst was successful.
 448    */
 449  return (DWORD)MAKELONG(strlen(str), length);
 450 }
 451
 452 /*************************************************************************
 453  *                              ShellHookProc           [SHELL.103]
 454  * System-wide WH_SHELL hook.
 455  */
 456 LRESULT WINAPI ShellHookProc16(INT16 code, WPARAM16 wParam, LPARAM lParam)
 457 {
 458     TRACE("%i, %04x, %08x\n", code, wParam,
 459                                                       (unsigned)lParam );
 460     if( SHELL_hHook && SHELL_hWnd )
 461     {
 462         UINT16  uMsg = 0;
 463         switch( code )
 464         {
 465             case HSHELL_WINDOWCREATED:          uMsg = uMsgWndCreated;   break;
 466             case HSHELL_WINDOWDESTROYED:        uMsg = uMsgWndDestroyed; break;
 467             case HSHELL_ACTIVATESHELLWINDOW:    uMsg = uMsgShellActivate;
 468         }
 469         PostMessageA( HWND_32(SHELL_hWnd), uMsg, wParam, 0 );
 470     }
 471     return CallNextHookEx16( SHELL_hHook, code, wParam, lParam );
 472 }
 473
 474 /*************************************************************************
 475  *                              RegisterShellHook       [SHELL.102]
 476  */
 477 BOOL WINAPI RegisterShellHook16(HWND16 hWnd, UINT16 uAction)
 478 {
 479     TRACE("%04x [%u]\n", hWnd, uAction );
 480
 481     switch( uAction )
 482     {
 483     case 2:  /* register hWnd as a shell window */
 484         if( !SHELL_hHook )
 485         {
 486             HMODULE16 hShell = GetModuleHandle16( "SHELL" );
 487             HOOKPROC16 hookProc = (HOOKPROC16)GetProcAddress16( hShell, (LPCSTR)103 );
 488             SHELL_hHook = SetWindowsHookEx16( WH_SHELL, hookProc, hShell, 0 );
 489             if ( SHELL_hHook )
 490             {
 491                 uMsgWndCreated = RegisterWindowMessageA( lpstrMsgWndCreated );
 492                 uMsgWndDestroyed = RegisterWindowMessageA( lpstrMsgWndDestroyed );
 493                 uMsgShellActivate = RegisterWindowMessageA( lpstrMsgShellActivate );
 494             }
 495             else
 496                 WARN("-- unable to install ShellHookProc()!\n");
 497         }
 498
 499         if ( SHELL_hHook )
 500             return ((SHELL_hWnd = hWnd) != 0);
 501         break;
 502
 503     default:
 504         WARN("-- unknown code %i\n", uAction );
 505         SHELL_hWnd = 0; /* just in case */
 506     }
 507     return FALSE;
 508 }
 509
 510
 511 /***********************************************************************
 512  *           DriveType   (SHELL.262)
 513  */
 514 UINT16 WINAPI DriveType16( UINT16 drive )
 515 {
 516     UINT ret;
 517     char path[] = "A:\\";
 518     path[0] += drive;
 519     ret = GetDriveTypeA(path);
 520     switch(ret)  /* some values are not supported in Win16 */
 521     {
 522     case DRIVE_CDROM:
 523         ret = DRIVE_REMOTE;
 524         break;
 525     case DRIVE_NO_ROOT_DIR:
 526         ret = DRIVE_UNKNOWN;
 527         break;
 528     }
 529     return ret;
 530 }