misc/shell.c

   1 /*
   2  *                              Shell Library Functions
   3  *
   4  *  1998 Marcus Meissner
   5  */
   6 #include <assert.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include <unistd.h>
  10 #include <ctype.h>
  11 #include "wine/winuser16.h"
  12 #include "wine/winbase16.h"
  13 #include "wine/shell16.h"
  14 #include "winerror.h"
  15 #include "file.h"
  16 #include "heap.h"
  17 #include "ldt.h"
  18 #include "module.h"
  19 #include "neexe.h"
  20 #include "dlgs.h"
  21 #include "cursoricon.h"
  22 #include "sysmetrics.h"
  23 #include "shellapi.h"
  24 #include "shlobj.h"
  25 #include "debug.h"
  26 #include "winreg.h"
  27 #include "imagelist.h"
  28
  29 /* .ICO file ICONDIR definitions */
  30
  31 #pragma pack(1)
  32
  33 typedef struct
  34 {
  35     BYTE        bWidth;          /* Width, in pixels, of the image      */
  36     BYTE        bHeight;         /* Height, in pixels, of the image     */
  37     BYTE        bColorCount;     /* Number of colors in image (0 if >=8bpp) */
  38     BYTE        bReserved;       /* Reserved ( must be 0)               */
  39     WORD        wPlanes;         /* Color Planes                        */
  40     WORD        wBitCount;       /* Bits per pixel                      */
  41     DWORD       dwBytesInRes;    /* How many bytes in this resource?    */
  42     DWORD       dwImageOffset;   /* Where in the file is this image?    */
  43 } icoICONDIRENTRY, *LPicoICONDIRENTRY;
  44
  45 typedef struct
  46 {
  47     WORD            idReserved;   /* Reserved (must be 0)               */
  48     WORD            idType;       /* Resource Type (1 for icons)        */
  49     WORD            idCount;      /* How many images?                   */
  50     icoICONDIRENTRY idEntries[1]; /* An entry for each image (idCount of 'em) */
  51 } icoICONDIR, *LPicoICONDIR;
  52
  53 #pragma pack(4)
  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
  65 /*************************************************************************
  66  *                              DragAcceptFiles32               [SHELL32.54]
  67  */
  68 void WINAPI DragAcceptFiles(HWND hWnd, BOOL b)
  69 {
  70   LONG exstyle;
  71
  72
  73   if( !IsWindow(hWnd) )
  74         return;
  75   exstyle = GetWindowLongA(hWnd,GWL_EXSTYLE);
  76   if (b)exstyle |= WS_EX_ACCEPTFILES;
  77   else  exstyle &= ~WS_EX_ACCEPTFILES;
  78   SetWindowLongA(hWnd,GWL_EXSTYLE,exstyle);
  79 }
  80
  81 /*************************************************************************
  82  *                              DragAcceptFiles16               [SHELL.9]
  83  */
  84 void WINAPI DragAcceptFiles16(HWND16 hWnd, BOOL16 b)
  85 {
  86   DragAcceptFiles(hWnd, b);
  87 }
  88
  89 /*************************************************************************
  90  *                              SHELL_DragQueryFile     [internal]
  91  *
  92  */
  93 static UINT SHELL_DragQueryFile(LPSTR lpDrop, LPWSTR lpwDrop, UINT lFile,
  94                                   LPSTR lpszFile, LPWSTR lpszwFile, UINT lLength)
  95 {
  96     UINT i;
  97
  98     i = 0;
  99     if (lpDrop) {
 100     while (i++ < lFile) {
 101         while (*lpDrop++); /* skip filename */
 102         if (!*lpDrop)
 103           return (lFile == 0xFFFFFFFF) ? i : 0;
 104       }
 105     }
 106     if (lpwDrop) {
 107       while (i++ < lFile) {
 108         while (*lpwDrop++); /* skip filename */
 109         if (!*lpwDrop)
 110           return (lFile == 0xFFFFFFFF) ? i : 0;
 111       }
 112     }
 113
 114     if (lpDrop)  i = lstrlenA(lpDrop);
 115     if (lpwDrop) i = lstrlenW(lpwDrop);
 116     i++;
 117     if (!lpszFile && !lpszwFile) {
 118       return i;   /* needed buffer size */
 119     }
 120     i = (lLength > i) ? i : lLength;
 121     if (lpszFile) {
 122       if (lpDrop) lstrcpynA (lpszFile,  lpDrop,  i);
 123       else        lstrcpynWtoA(lpszFile,  lpwDrop, i);
 124     } else {
 125       if (lpDrop) lstrcpynAtoW(lpszwFile, lpDrop,  i);
 126       else        lstrcpynW (lpszwFile, lpwDrop, i);
 127     }
 128     return i;
 129 }
 130
 131 /*************************************************************************
 132  *                              DragQueryFile32A        [SHELL32.81] [shell32.82]
 133  */
 134 UINT WINAPI DragQueryFileA(HDROP hDrop, UINT lFile, LPSTR lpszFile,
 135                               UINT lLength)
 136 { /* hDrop is a global memory block allocated with GMEM_SHARE
 137      * with DROPFILESTRUCT as a header and filenames following
 138      * it, zero length filename is in the end */
 139
 140     LPDROPFILESTRUCT lpDropFileStruct;
 141     LPSTR lpCurrent;
 142     UINT i;
 143
 144     TRACE(shell,"(%08x, %x, %p, %u)\n", hDrop,lFile,lpszFile,lLength);
 145
 146     lpDropFileStruct = (LPDROPFILESTRUCT) GlobalLock(hDrop);
 147     if(!lpDropFileStruct)
 148       return 0;
 149
 150     lpCurrent = (LPSTR) lpDropFileStruct + lpDropFileStruct->lSize;
 151     i = SHELL_DragQueryFile(lpCurrent, NULL, lFile, lpszFile, NULL, lLength);
 152     GlobalUnlock(hDrop);
 153     return i;
 154 }
 155
 156 /*************************************************************************
 157  *                              DragQueryFile32W        [shell32.133]
 158  */
 159 UINT WINAPI DragQueryFileW(HDROP hDrop, UINT lFile, LPWSTR lpszwFile,
 160                               UINT lLength)
 161 {
 162     LPDROPFILESTRUCT lpDropFileStruct;
 163     LPWSTR lpwCurrent;
 164     UINT i;
 165
 166     TRACE(shell,"(%08x, %x, %p, %u)\n", hDrop,lFile,lpszwFile,lLength);
 167
 168     lpDropFileStruct = (LPDROPFILESTRUCT) GlobalLock(hDrop);
 169     if(!lpDropFileStruct)
 170       return 0;
 171
 172     lpwCurrent = (LPWSTR) lpDropFileStruct + lpDropFileStruct->lSize;
 173     i = SHELL_DragQueryFile(NULL, lpwCurrent, lFile, NULL, lpszwFile,lLength);
 174     GlobalUnlock(hDrop);
 175     return i;
 176 }
 177 /*************************************************************************
 178  *                              DragQueryFile16         [SHELL.11]
 179  */
 180 UINT16 WINAPI DragQueryFile16(HDROP16 hDrop, WORD wFile, LPSTR lpszFile,
 181                             WORD wLength)
 182 { /* hDrop is a global memory block allocated with GMEM_SHARE
 183      * with DROPFILESTRUCT as a header and filenames following
 184      * it, zero length filename is in the end */
 185
 186     LPDROPFILESTRUCT16 lpDropFileStruct;
 187     LPSTR lpCurrent;
 188     WORD  i;
 189
 190     TRACE(shell,"(%04x, %x, %p, %u)\n", hDrop,wFile,lpszFile,wLength);
 191
 192     lpDropFileStruct = (LPDROPFILESTRUCT16) GlobalLock16(hDrop);
 193     if(!lpDropFileStruct)
 194       return 0;
 195
 196     lpCurrent = (LPSTR) lpDropFileStruct + lpDropFileStruct->wSize;
 197
 198     i = (WORD)SHELL_DragQueryFile(lpCurrent, NULL, wFile==0xffff?0xffffffff:wFile,
 199                                   lpszFile, NULL, wLength);
 200     GlobalUnlock16(hDrop);
 201     return i;
 202 }
 203
 204
 205
 206 /*************************************************************************
 207  *                              DragFinish32            [SHELL32.80]
 208  */
 209 void WINAPI DragFinish(HDROP h)
 210 { TRACE(shell,"\n");
 211     GlobalFree((HGLOBAL)h);
 212 }
 213
 214 /*************************************************************************
 215  *                              DragFinish16            [SHELL.12]
 216  */
 217 void WINAPI DragFinish16(HDROP16 h)
 218 { TRACE(shell,"\n");
 219     GlobalFree16((HGLOBAL16)h);
 220 }
 221
 222
 223 /*************************************************************************
 224  *                              DragQueryPoint32                [SHELL32.135]
 225  */
 226 BOOL WINAPI DragQueryPoint(HDROP hDrop, POINT *p)
 227 {
 228   LPDROPFILESTRUCT lpDropFileStruct;
 229   BOOL             bRet;
 230   TRACE(shell,"\n");
 231   lpDropFileStruct = (LPDROPFILESTRUCT) GlobalLock(hDrop);
 232
 233   memcpy(p,&lpDropFileStruct->ptMousePos,sizeof(POINT));
 234   bRet = lpDropFileStruct->fInNonClientArea;
 235
 236   GlobalUnlock(hDrop);
 237   return bRet;
 238 }
 239
 240 /*************************************************************************
 241  *                              DragQueryPoint16                [SHELL.13]
 242  */
 243 BOOL16 WINAPI DragQueryPoint16(HDROP16 hDrop, POINT16 *p)
 244 {
 245   LPDROPFILESTRUCT16 lpDropFileStruct;
 246   BOOL16           bRet;
 247   TRACE(shell,"\n");
 248   lpDropFileStruct = (LPDROPFILESTRUCT16) GlobalLock16(hDrop);
 249
 250   memcpy(p,&lpDropFileStruct->ptMousePos,sizeof(POINT16));
 251   bRet = lpDropFileStruct->fInNonClientArea;
 252
 253   GlobalUnlock16(hDrop);
 254   return bRet;
 255 }
 256
 257 /*************************************************************************
 258  *      SHELL_FindExecutable [Internal]
 259  *
 260  * Utility for code sharing between FindExecutable and ShellExecute
 261  */
 262 HINSTANCE SHELL_FindExecutable( LPCSTR lpFile,
 263                                          LPCSTR lpOperation,
 264                                          LPSTR lpResult)
 265 { char *extension = NULL; /* pointer to file extension */
 266     char tmpext[5];         /* local copy to mung as we please */
 267     char filetype[256];     /* registry name for this filetype */
 268     LONG filetypelen=256;   /* length of above */
 269     char command[256];      /* command from registry */
 270     LONG commandlen=256;    /* This is the most DOS can handle :) */
 271     char buffer[256];       /* Used to GetProfileString */
 272     HINSTANCE retval=31;  /* default - 'No association was found' */
 273     char *tok;              /* token pointer */
 274     int i;                  /* random counter */
 275     char xlpFile[256];      /* result of SearchPath */
 276
 277   TRACE(shell, "%s\n", (lpFile != NULL?lpFile:"-") );
 278
 279     lpResult[0]='\0'; /* Start off with an empty return string */
 280
 281     /* trap NULL parameters on entry */
 282     if (( lpFile == NULL ) || ( lpResult == NULL ) || ( lpOperation == NULL ))
 283   { WARN(exec, "(lpFile=%s,lpResult=%s,lpOperation=%s): NULL parameter\n",
 284            lpFile, lpOperation, lpResult);
 285         return 2; /* File not found. Close enough, I guess. */
 286     }
 287
 288     if (SearchPathA( NULL, lpFile,".exe",sizeof(xlpFile),xlpFile,NULL))
 289   { TRACE(shell, "SearchPath32A returned non-zero\n");
 290         lpFile = xlpFile;
 291     }
 292
 293     /* First thing we need is the file's extension */
 294     extension = strrchr( xlpFile, '.' ); /* Assume last "." is the one; */
 295                                         /* File->Run in progman uses */
 296                                         /* .\FILE.EXE :( */
 297   TRACE(shell, "xlpFile=%s,extension=%s\n", xlpFile, extension);
 298
 299     if ((extension == NULL) || (extension == &xlpFile[strlen(xlpFile)]))
 300   { WARN(shell, "Returning 31 - No association\n");
 301         return 31; /* no association */
 302     }
 303
 304     /* Make local copy & lowercase it for reg & 'programs=' lookup */
 305     lstrcpynA( tmpext, extension, 5 );
 306     CharLowerA( tmpext );
 307   TRACE(shell, "%s file\n", tmpext);
 308
 309     /* Three places to check: */
 310     /* 1. win.ini, [windows], programs (NB no leading '.') */
 311     /* 2. Registry, HKEY_CLASS_ROOT\<filetype>\shell\open\command */
 312     /* 3. win.ini, [extensions], extension (NB no leading '.' */
 313     /* All I know of the order is that registry is checked before */
 314     /* extensions; however, it'd make sense to check the programs */
 315     /* section first, so that's what happens here. */
 316
 317     /* See if it's a program - if GetProfileString fails, we skip this
 318      * section. Actually, if GetProfileString fails, we've probably
 319      * got a lot more to worry about than running a program... */
 320     if ( GetProfileStringA("windows", "programs", "exe pif bat com",
 321                                                   buffer, sizeof(buffer)) > 0 )
 322   { for (i=0;i<strlen(buffer); i++) buffer[i]=tolower(buffer[i]);
 323
 324                 tok = strtok(buffer, " \t"); /* ? */
 325                 while( tok!= NULL)
 326                   {
 327                         if (strcmp(tok, &tmpext[1])==0) /* have to skip the leading "." */
 328                           {
 329                                 strcpy(lpResult, xlpFile);
 330                                 /* Need to perhaps check that the file has a path
 331                                  * attached */
 332         TRACE(shell, "found %s\n", lpResult);
 333                                 return 33;
 334
 335                 /* Greater than 32 to indicate success FIXME According to the
 336                  * docs, I should be returning a handle for the
 337                  * executable. Does this mean I'm supposed to open the
 338                  * executable file or something? More RTFM, I guess... */
 339                           }
 340                         tok=strtok(NULL, " \t");
 341                   }
 342           }
 343
 344     /* Check registry */
 345     if (RegQueryValue16( HKEY_CLASSES_ROOT, tmpext, filetype,
 346                          &filetypelen ) == ERROR_SUCCESS )
 347     {
 348         filetype[filetypelen]='\0';
 349   TRACE(shell, "File type: %s\n", filetype);
 350
 351         /* Looking for ...buffer\shell\lpOperation\command */
 352         strcat( filetype, "\\shell\\" );
 353         strcat( filetype, lpOperation );
 354         strcat( filetype, "\\command" );
 355
 356         if (RegQueryValue16( HKEY_CLASSES_ROOT, filetype, command,
 357                              &commandlen ) == ERROR_SUCCESS )
 358         {
 359             /* Is there a replace() function anywhere? */
 360             command[commandlen]='\0';
 361             strcpy( lpResult, command );
 362             tok=strstr( lpResult, "%1" );
 363             if (tok != NULL)
 364             {
 365                 tok[0]='\0'; /* truncate string at the percent */
 366                 strcat( lpResult, xlpFile ); /* what if no dir in xlpFile? */
 367                 tok=strstr( command, "%1" );
 368                 if ((tok!=NULL) && (strlen(tok)>2))
 369                 {
 370                     strcat( lpResult, &tok[2] );
 371                 }
 372             }
 373             retval=33; /* FIXME see above */
 374         }
 375     }
 376     else /* Check win.ini */
 377     {
 378         /* Toss the leading dot */
 379         extension++;
 380         if ( GetProfileStringA( "extensions", extension, "", command,
 381                                   sizeof(command)) > 0)
 382           {
 383                 if (strlen(command)!=0)
 384                   {
 385                         strcpy( lpResult, command );
 386                         tok=strstr( lpResult, "^" ); /* should be ^.extension? */
 387                         if (tok != NULL)
 388                           {
 389                                 tok[0]='\0';
 390                                 strcat( lpResult, xlpFile ); /* what if no dir in xlpFile? */
 391                                 tok=strstr( command, "^" ); /* see above */
 392                                 if ((tok != NULL) && (strlen(tok)>5))
 393                                   {
 394                                         strcat( lpResult, &tok[5]);
 395                                   }
 396                           }
 397                         retval=33; /* FIXME - see above */
 398                   }
 399           }
 400         }
 401
 402     TRACE(shell, "returning %s\n", lpResult);
 403     return retval;
 404 }
 405
 406 /*************************************************************************
 407  *                              ShellExecute16          [SHELL.20]
 408  */
 409 HINSTANCE16 WINAPI ShellExecute16( HWND16 hWnd, LPCSTR lpOperation,
 410                                    LPCSTR lpFile, LPCSTR lpParameters,
 411                                    LPCSTR lpDirectory, INT16 iShowCmd )
 412 {   HINSTANCE16 retval=31;
 413     char old_dir[1024];
 414     char cmd[256];
 415
 416     TRACE(shell, "(%04x,'%s','%s','%s','%s',%x)\n",
 417                 hWnd, lpOperation ? lpOperation:"<null>", lpFile ? lpFile:"<null>",
 418                 lpParameters ? lpParameters : "<null>",
 419                 lpDirectory ? lpDirectory : "<null>", iShowCmd);
 420
 421     if (lpFile==NULL) return 0; /* should not happen */
 422     if (lpOperation==NULL) /* default is open */
 423       lpOperation="open";
 424
 425     if (lpDirectory)
 426     { GetCurrentDirectoryA( sizeof(old_dir), old_dir );
 427         SetCurrentDirectoryA( lpDirectory );
 428     }
 429
 430     retval = SHELL_FindExecutable( lpFile, lpOperation, cmd );
 431
 432     if (retval > 32)  /* Found */
 433     { if (lpParameters)
 434       { strcat(cmd," ");
 435             strcat(cmd,lpParameters);
 436         }
 437
 438       TRACE(shell,"starting %s\n",cmd);
 439         retval = WinExec( cmd, iShowCmd );
 440     }
 441     if (lpDirectory)
 442       SetCurrentDirectoryA( old_dir );
 443     return retval;
 444 }
 445
 446 /*************************************************************************
 447  *             FindExecutable16   (SHELL.21)
 448  */
 449 HINSTANCE16 WINAPI FindExecutable16( LPCSTR lpFile, LPCSTR lpDirectory,
 450                                      LPSTR lpResult )
 451 { return (HINSTANCE16)FindExecutableA( lpFile, lpDirectory, lpResult );
 452 }
 453
 454
 455 /*************************************************************************
 456  *             AboutDlgProc16   (SHELL.33)
 457  */
 458 BOOL16 WINAPI AboutDlgProc16( HWND16 hWnd, UINT16 msg, WPARAM16 wParam,
 459                                LPARAM lParam )
 460 { return AboutDlgProc( hWnd, msg, wParam, lParam );
 461 }
 462
 463
 464 /*************************************************************************
 465  *             ShellAbout16   (SHELL.22)
 466  */
 467 BOOL16 WINAPI ShellAbout16( HWND16 hWnd, LPCSTR szApp, LPCSTR szOtherStuff,
 468                             HICON16 hIcon )
 469 { return ShellAboutA( hWnd, szApp, szOtherStuff, hIcon );
 470 }
 471
 472 /*************************************************************************
 473  *                              SHELL_GetResourceTable
 474  */
 475 static DWORD SHELL_GetResourceTable(HFILE hFile,LPBYTE *retptr)
 476 {       IMAGE_DOS_HEADER        mz_header;
 477         char                    magic[4];
 478         int                     size;
 479
 480         TRACE(shell,"\n");
 481
 482         *retptr = NULL;
 483         _llseek( hFile, 0, SEEK_SET );
 484         if ((_lread(hFile,&mz_header,sizeof(mz_header)) != sizeof(mz_header)) || (mz_header.e_magic != IMAGE_DOS_SIGNATURE))
 485         { /* .ICO file ? */
 486           if (mz_header.e_cblp == 1)
 487           { /* ICONHEADER.idType, must be 1 */
 488             *retptr = (LPBYTE)-1;
 489             return 1;
 490           }
 491           else
 492             return 0; /* failed */
 493         }
 494         _llseek( hFile, mz_header.e_lfanew, SEEK_SET );
 495
 496         if (_lread( hFile, magic, sizeof(magic) ) != sizeof(magic))
 497           return 0;
 498
 499         _llseek( hFile, mz_header.e_lfanew, SEEK_SET);
 500
 501         if (*(DWORD*)magic  == IMAGE_NT_SIGNATURE)
 502           return IMAGE_NT_SIGNATURE;
 503
 504         if (*(WORD*)magic == IMAGE_OS2_SIGNATURE)
 505         { IMAGE_OS2_HEADER      ne_header;
 506           LPBYTE                pTypeInfo = (LPBYTE)-1;
 507
 508           if (_lread(hFile,&ne_header,sizeof(ne_header))!=sizeof(ne_header))
 509             return 0;
 510
 511           if (ne_header.ne_magic != IMAGE_OS2_SIGNATURE)
 512             return 0;
 513
 514           size = ne_header.rname_tab_offset - ne_header.resource_tab_offset;
 515
 516           if( size > sizeof(NE_TYPEINFO) )
 517           { pTypeInfo = (BYTE*)HeapAlloc( GetProcessHeap(), 0, size);
 518             if( pTypeInfo )
 519             { _llseek(hFile, mz_header.e_lfanew+ne_header.resource_tab_offset, SEEK_SET);
 520               if( _lread( hFile, (char*)pTypeInfo, size) != size )
 521               { HeapFree( GetProcessHeap(), 0, pTypeInfo);
 522                 pTypeInfo = NULL;
 523               }
 524             }
 525           }
 526           *retptr = pTypeInfo;
 527           return IMAGE_OS2_SIGNATURE;
 528         }
 529         return 0; /* failed */
 530 }
 531
 532 /*************************************************************************
 533  *                      SHELL_LoadResource
 534  */
 535 static HGLOBAL16 SHELL_LoadResource(HINSTANCE16 hInst, HFILE hFile, NE_NAMEINFO* pNInfo, WORD sizeShift)
 536 {       BYTE*  ptr;
 537         HGLOBAL16 handle = DirectResAlloc16( hInst, 0x10, (DWORD)pNInfo->length << sizeShift);
 538
 539         TRACE(shell,"\n");
 540
 541         if( (ptr = (BYTE*)GlobalLock16( handle )) )
 542         { _llseek( hFile, (DWORD)pNInfo->offset << sizeShift, SEEK_SET);
 543           _lread( hFile, (char*)ptr, pNInfo->length << sizeShift);
 544           return handle;
 545         }
 546         return 0;
 547 }
 548
 549 /*************************************************************************
 550  *                      ICO_LoadIcon
 551  */
 552 static HGLOBAL16 ICO_LoadIcon(HINSTANCE16 hInst, HFILE hFile, LPicoICONDIRENTRY lpiIDE)
 553 {       BYTE*  ptr;
 554         HGLOBAL16 handle = DirectResAlloc16( hInst, 0x10, lpiIDE->dwBytesInRes);
 555         TRACE(shell,"\n");
 556         if( (ptr = (BYTE*)GlobalLock16( handle )) )
 557         { _llseek( hFile, lpiIDE->dwImageOffset, SEEK_SET);
 558           _lread( hFile, (char*)ptr, lpiIDE->dwBytesInRes);
 559           return handle;
 560         }
 561         return 0;
 562 }
 563
 564 /*************************************************************************
 565  *                      ICO_GetIconDirectory
 566  *
 567  *  Read .ico file and build phony ICONDIR struct for GetIconID
 568  */
 569 static HGLOBAL16 ICO_GetIconDirectory(HINSTANCE16 hInst, HFILE hFile, LPicoICONDIR* lplpiID )
 570 { WORD    id[3];  /* idReserved, idType, idCount */
 571   LPicoICONDIR  lpiID;
 572   int           i;
 573
 574   TRACE(shell,"\n");
 575   _llseek( hFile, 0, SEEK_SET );
 576   if( _lread(hFile,(char*)id,sizeof(id)) != sizeof(id) ) return 0;
 577
 578   /* check .ICO header
 579    *
 580    * - see http://www.microsoft.com/win32dev/ui/icons.htm
 581    */
 582
 583   if( id[0] || id[1] != 1 || !id[2] ) return 0;
 584
 585   i = id[2]*sizeof(icoICONDIRENTRY) + sizeof(id);
 586
 587   lpiID = (LPicoICONDIR)HeapAlloc( GetProcessHeap(), 0, i);
 588
 589   if( _lread(hFile,(char*)lpiID->idEntries,i) == i )
 590   { HGLOBAL16 handle = DirectResAlloc16( hInst, 0x10,
 591                                      id[2]*sizeof(ICONDIRENTRY) + sizeof(id) );
 592      if( handle )
 593     { CURSORICONDIR*     lpID = (CURSORICONDIR*)GlobalLock16( handle );
 594        lpID->idReserved = lpiID->idReserved = id[0];
 595        lpID->idType = lpiID->idType = id[1];
 596        lpID->idCount = lpiID->idCount = id[2];
 597        for( i=0; i < lpiID->idCount; i++ )
 598       { memcpy((void*)(lpID->idEntries + i),
 599                    (void*)(lpiID->idEntries + i), sizeof(ICONDIRENTRY) - 2);
 600             lpID->idEntries[i].icon.wResId = i;
 601          }
 602       *lplpiID = lpiID;
 603        return handle;
 604      }
 605   }
 606   /* fail */
 607
 608   HeapFree( GetProcessHeap(), 0, lpiID);
 609   return 0;
 610 }
 611
 612 /*************************************************************************
 613  *                      InternalExtractIcon             [SHELL.39]
 614  *
 615  * This abortion is called directly by Progman
 616  */
 617 HGLOBAL16 WINAPI InternalExtractIcon16(HINSTANCE16 hInstance,
 618                                      LPCSTR lpszExeFileName, UINT16 nIconIndex, WORD n )
 619 {       HGLOBAL16       hRet = 0;
 620         HGLOBAL16*      RetPtr = NULL;
 621         LPBYTE          pData;
 622         OFSTRUCT        ofs;
 623         DWORD           sig;
 624         HFILE           hFile = OpenFile( lpszExeFileName, &ofs, OF_READ );
 625         UINT16          iconDirCount = 0,iconCount = 0;
 626         LPBYTE          peimage;
 627         HANDLE  fmapping;
 628
 629         TRACE(shell,"(%04x,file %s,start %d,extract %d\n",
 630                        hInstance, lpszExeFileName, nIconIndex, n);
 631
 632         if( hFile == HFILE_ERROR || !n )
 633           return 0;
 634
 635         hRet = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, sizeof(HICON16)*n);
 636         RetPtr = (HICON16*)GlobalLock16(hRet);
 637
 638         *RetPtr = (n == 0xFFFF)? 0: 1;  /* error return values */
 639
 640         sig = SHELL_GetResourceTable(hFile,&pData);
 641
 642         if( sig==IMAGE_OS2_SIGNATURE || sig==1 ) /* .ICO file */
 643         { HICON16        hIcon = 0;
 644           NE_TYPEINFO* pTInfo = (NE_TYPEINFO*)(pData + 2);
 645           NE_NAMEINFO* pIconStorage = NULL;
 646           NE_NAMEINFO* pIconDir = NULL;
 647           LPicoICONDIR lpiID = NULL;
 648
 649           if( pData == (BYTE*)-1 )
 650           { hIcon = ICO_GetIconDirectory(hInstance, hFile, &lpiID);     /* check for .ICO file */
 651             if( hIcon )
 652             { iconDirCount = 1; iconCount = lpiID->idCount;
 653             }
 654           }
 655           else while( pTInfo->type_id && !(pIconStorage && pIconDir) )
 656           { if( pTInfo->type_id == NE_RSCTYPE_GROUP_ICON )      /* find icon directory and icon repository */
 657             { iconDirCount = pTInfo->count;
 658               pIconDir = ((NE_NAMEINFO*)(pTInfo + 1));
 659               TRACE(shell,"\tfound directory - %i icon families\n", iconDirCount);
 660             }
 661             if( pTInfo->type_id == NE_RSCTYPE_ICON )
 662             { iconCount = pTInfo->count;
 663               pIconStorage = ((NE_NAMEINFO*)(pTInfo + 1));
 664               TRACE(shell,"\ttotal icons - %i\n", iconCount);
 665             }
 666             pTInfo = (NE_TYPEINFO *)((char*)(pTInfo+1)+pTInfo->count*sizeof(NE_NAMEINFO));
 667           }
 668
 669           /* load resources and create icons */
 670
 671           if( (pIconStorage && pIconDir) || lpiID )
 672           { if( nIconIndex == (UINT16)-1 )
 673             { RetPtr[0] = iconDirCount;
 674             }
 675             else if( nIconIndex < iconDirCount )
 676             { UINT16   i, icon;
 677               if( n > iconDirCount - nIconIndex )
 678                 n = iconDirCount - nIconIndex;
 679
 680               for( i = nIconIndex; i < nIconIndex + n; i++ )
 681               { /* .ICO files have only one icon directory */
 682
 683                 if( lpiID == NULL )
 684                   hIcon = SHELL_LoadResource( hInstance, hFile, pIconDir + i, *(WORD*)pData );
 685                 RetPtr[i-nIconIndex] = GetIconID16( hIcon, 3 );
 686                 GlobalFree16(hIcon);
 687               }
 688
 689               for( icon = nIconIndex; icon < nIconIndex + n; icon++ )
 690               { hIcon = 0;
 691                 if( lpiID )
 692                 { hIcon = ICO_LoadIcon( hInstance, hFile, lpiID->idEntries + RetPtr[icon-nIconIndex]);
 693                 }
 694                 else
 695                 { for( i = 0; i < iconCount; i++ )
 696                   { if( pIconStorage[i].id == (RetPtr[icon-nIconIndex] | 0x8000) )
 697                     { hIcon = SHELL_LoadResource( hInstance, hFile, pIconStorage + i,*(WORD*)pData );
 698                     }
 699                   }
 700                 }
 701                 if( hIcon )
 702                 { RetPtr[icon-nIconIndex] = LoadIconHandler16( hIcon, TRUE );
 703                   FarSetOwner16( RetPtr[icon-nIconIndex], GetExePtr(hInstance) );
 704                 }
 705                 else
 706                 { RetPtr[icon-nIconIndex] = 0;
 707                 }
 708               }
 709             }
 710           }
 711           if( lpiID )
 712             HeapFree( GetProcessHeap(), 0, lpiID);
 713           else
 714             HeapFree( GetProcessHeap(), 0, pData);
 715         }
 716
 717         if( sig == IMAGE_NT_SIGNATURE)
 718         { LPBYTE                idata,igdata;
 719           PIMAGE_DOS_HEADER     dheader;
 720           PIMAGE_NT_HEADERS     pe_header;
 721           PIMAGE_SECTION_HEADER pe_sections;
 722           PIMAGE_RESOURCE_DIRECTORY     rootresdir,iconresdir,icongroupresdir;
 723           PIMAGE_RESOURCE_DATA_ENTRY    idataent,igdataent;
 724           int                   i,j;
 725           PIMAGE_RESOURCE_DIRECTORY_ENTRY       xresent;
 726           CURSORICONDIR         **cids;
 727
 728           fmapping = CreateFileMappingA(hFile,NULL,PAGE_READONLY|SEC_COMMIT,0,0,NULL);
 729           if (fmapping == 0)
 730           { /* FIXME, INVALID_HANDLE_VALUE? */
 731             WARN(shell,"failed to create filemap.\n");
 732             hRet = 0;
 733             goto end_2; /* failure */
 734           }
 735           peimage = MapViewOfFile(fmapping,FILE_MAP_READ,0,0,0);
 736           if (!peimage)
 737           { WARN(shell,"failed to mmap filemap.\n");
 738             hRet = 0;
 739             goto end_2; /* failure */
 740           }
 741           dheader = (PIMAGE_DOS_HEADER)peimage;
 742
 743           /* it is a pe header, SHELL_GetResourceTable checked that */
 744           pe_header = (PIMAGE_NT_HEADERS)(peimage+dheader->e_lfanew);
 745
 746           /* probably makes problems with short PE headers... but I haven't seen
 747           * one yet...
 748           */
 749           pe_sections = (PIMAGE_SECTION_HEADER)(((char*)pe_header)+sizeof(*pe_header));
 750           rootresdir = NULL;
 751
 752           for (i=0;i<pe_header->FileHeader.NumberOfSections;i++)
 753           { if (pe_sections[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
 754               continue;
 755             /* FIXME: doesn't work when the resources are not in a seperate section */
 756             if (pe_sections[i].VirtualAddress == pe_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress)
 757             { rootresdir = (PIMAGE_RESOURCE_DIRECTORY)((char*)peimage+pe_sections[i].PointerToRawData);
 758               break;
 759             }
 760           }
 761
 762           if (!rootresdir)
 763           { WARN(shell,"haven't found section for resource directory.\n");
 764             goto end_4; /* failure */
 765           }
 766
 767           icongroupresdir = GetResDirEntryW(rootresdir,RT_GROUP_ICONW, (DWORD)rootresdir,FALSE);
 768
 769           if (!icongroupresdir)
 770           { WARN(shell,"No Icongroupresourcedirectory!\n");
 771             goto end_4; /* failure */
 772           }
 773
 774           iconDirCount = icongroupresdir->NumberOfNamedEntries+icongroupresdir->NumberOfIdEntries;
 775
 776           if( nIconIndex == (UINT16)-1 )
 777           { RetPtr[0] = iconDirCount;
 778             goto end_3; /* success */
 779           }
 780
 781           if (nIconIndex >= iconDirCount)
 782           { WARN(shell,"nIconIndex %d is larger than iconDirCount %d\n",nIconIndex,iconDirCount);
 783             GlobalFree16(hRet);
 784             goto end_4; /* failure */
 785           }
 786
 787           cids = (CURSORICONDIR**)HeapAlloc(GetProcessHeap(),0,n*sizeof(CURSORICONDIR*));
 788
 789           /* caller just wanted the number of entries */
 790           xresent = (PIMAGE_RESOURCE_DIRECTORY_ENTRY)(icongroupresdir+1);
 791
 792           /* assure we don't get too much ... */
 793           if( n > iconDirCount - nIconIndex )
 794           { n = iconDirCount - nIconIndex;
 795           }
 796
 797           /* starting from specified index ... */
 798           xresent = xresent+nIconIndex;
 799
 800           for (i=0;i<n;i++,xresent++)
 801           { CURSORICONDIR       *cid;
 802             PIMAGE_RESOURCE_DIRECTORY   resdir;
 803
 804             /* go down this resource entry, name */
 805             resdir = (PIMAGE_RESOURCE_DIRECTORY)((DWORD)rootresdir+(xresent->u2.s.OffsetToDirectory));
 806
 807             /* default language (0) */
 808             resdir = GetResDirEntryW(resdir,(LPWSTR)0,(DWORD)rootresdir,TRUE);
 809             igdataent = (PIMAGE_RESOURCE_DATA_ENTRY)resdir;
 810
 811             /* lookup address in mapped image for virtual address */
 812             igdata = NULL;
 813
 814             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 815             { if (igdataent->OffsetToData < pe_sections[j].VirtualAddress)
 816                 continue;
 817               if (igdataent->OffsetToData+igdataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 818                 continue;
 819               igdata = peimage+(igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 820             }
 821
 822             if (!igdata)
 823             { WARN(shell,"no matching real address for icongroup!\n");
 824               goto end_4;       /* failure */
 825             }
 826             /* found */
 827             cid = (CURSORICONDIR*)igdata;
 828             cids[i] = cid;
 829             RetPtr[i] = LookupIconIdFromDirectoryEx(igdata,TRUE,SYSMETRICS_CXICON,SYSMETRICS_CYICON,0);
 830           }
 831
 832           iconresdir=GetResDirEntryW(rootresdir,RT_ICONW,(DWORD)rootresdir,FALSE);
 833
 834           if (!iconresdir)
 835           { WARN(shell,"No Iconresourcedirectory!\n");
 836             goto end_4; /* failure */
 837           }
 838
 839           for (i=0;i<n;i++)
 840           { PIMAGE_RESOURCE_DIRECTORY   xresdir;
 841             xresdir = GetResDirEntryW(iconresdir,(LPWSTR)(DWORD)RetPtr[i],(DWORD)rootresdir,FALSE);
 842             xresdir = GetResDirEntryW(xresdir,(LPWSTR)0,(DWORD)rootresdir,TRUE);
 843             idataent = (PIMAGE_RESOURCE_DATA_ENTRY)xresdir;
 844             idata = NULL;
 845
 846             /* map virtual to address in image */
 847             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 848             { if (idataent->OffsetToData < pe_sections[j].VirtualAddress)
 849                 continue;
 850               if (idataent->OffsetToData+idataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 851                 continue;
 852               idata = peimage+(idataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 853             }
 854             if (!idata)
 855             { WARN(shell,"no matching real address found for icondata!\n");
 856               RetPtr[i]=0;
 857               continue;
 858             }
 859             RetPtr[i] = CreateIconFromResourceEx(idata,idataent->Size,TRUE,0x00030000,SYSMETRICS_CXICON,SYSMETRICS_CYICON,0);
 860           }
 861           goto end_3;   /* sucess */
 862         }
 863         goto end_1;     /* return array with icon handles */
 864
 865 /* cleaning up (try & catch would be nicer) */
 866 end_4:  hRet = 0;       /* failure */
 867 end_3:  UnmapViewOfFile(peimage);       /* success */
 868 end_2:  CloseHandle(fmapping);
 869 end_1:  _lclose( hFile);
 870         return hRet;
 871 }
 872
 873 /*************************************************************************
 874  *             ExtractIcon16   (SHELL.34)
 875  */
 876 HICON16 WINAPI ExtractIcon16( HINSTANCE16 hInstance, LPCSTR lpszExeFileName,
 877         UINT16 nIconIndex )
 878 {   TRACE(shell,"\n");
 879     return ExtractIconA( hInstance, lpszExeFileName, nIconIndex );
 880 }
 881
 882 /*************************************************************************
 883  *             ExtractIconEx16   (SHELL.40)
 884  */
 885 HICON16 WINAPI ExtractIconEx16(
 886         LPCSTR lpszFile, INT16 nIconIndex, HICON16 *phiconLarge,
 887         HICON16 *phiconSmall, UINT16 nIcons
 888 ) {
 889     HICON       *ilarge,*ismall;
 890     UINT16      ret;
 891     int         i;
 892
 893     if (phiconLarge)
 894         ilarge = (HICON*)HeapAlloc(GetProcessHeap(),0,nIcons*sizeof(HICON));
 895     else
 896         ilarge = NULL;
 897     if (phiconSmall)
 898         ismall = (HICON*)HeapAlloc(GetProcessHeap(),0,nIcons*sizeof(HICON));
 899     else
 900         ismall = NULL;
 901     ret = ExtractIconExA(lpszFile,nIconIndex,ilarge,ismall,nIcons);
 902     if (ilarge) {
 903         for (i=0;i<nIcons;i++)
 904             phiconLarge[i]=ilarge[i];
 905         HeapFree(GetProcessHeap(),0,ilarge);
 906     }
 907     if (ismall) {
 908         for (i=0;i<nIcons;i++)
 909             phiconSmall[i]=ismall[i];
 910         HeapFree(GetProcessHeap(),0,ismall);
 911     }
 912     return ret;
 913 }
 914
 915 /*************************************************************************
 916  *                              ExtractAssociatedIcon   [SHELL.36]
 917  *
 918  * Return icon for given file (either from file itself or from associated
 919  * executable) and patch parameters if needed.
 920  */
 921 HICON WINAPI ExtractAssociatedIconA(HINSTANCE hInst, LPSTR lpIconPath, LPWORD lpiIcon)
 922 {       TRACE(shell,"\n");
 923         return ExtractAssociatedIcon16(hInst,lpIconPath,lpiIcon);
 924 }
 925
 926 HICON16 WINAPI ExtractAssociatedIcon16(HINSTANCE16 hInst, LPSTR lpIconPath, LPWORD lpiIcon)
 927 {       HICON16 hIcon;
 928
 929         TRACE(shell,"\n");
 930
 931         hIcon = ExtractIcon16(hInst, lpIconPath, *lpiIcon);
 932
 933         if( hIcon < 2 )
 934         { if( hIcon == 1 ) /* no icons found in given file */
 935           { char  tempPath[0x80];
 936             UINT16  uRet = FindExecutable16(lpIconPath,NULL,tempPath);
 937
 938             if( uRet > 32 && tempPath[0] )
 939             { strcpy(lpIconPath,tempPath);
 940               hIcon = ExtractIcon16(hInst, lpIconPath, *lpiIcon);
 941               if( hIcon > 2 )
 942                 return hIcon;
 943             }
 944             else hIcon = 0;
 945           }
 946
 947           if( hIcon == 1 )
 948             *lpiIcon = 2;   /* MSDOS icon - we found .exe but no icons in it */
 949           else
 950             *lpiIcon = 6;   /* generic icon - found nothing */
 951
 952           GetModuleFileName16(hInst, lpIconPath, 0x80);
 953           hIcon = LoadIcon16( hInst, MAKEINTRESOURCE16(*lpiIcon));
 954         }
 955         return hIcon;
 956 }
 957
 958 /*************************************************************************
 959  *                              FindEnvironmentString   [SHELL.38]
 960  *
 961  * Returns a pointer into the DOS environment... Ugh.
 962  */
 963 LPSTR SHELL_FindString(LPSTR lpEnv, LPCSTR entry)
 964 { UINT16 l;
 965
 966   TRACE(shell,"\n");
 967
 968   l = strlen(entry);
 969   for( ; *lpEnv ; lpEnv+=strlen(lpEnv)+1 )
 970   { if( lstrncmpiA(lpEnv, entry, l) )
 971       continue;
 972         if( !*(lpEnv+l) )
 973             return (lpEnv + l);                 /* empty entry */
 974         else if ( *(lpEnv+l)== '=' )
 975             return (lpEnv + l + 1);
 976     }
 977     return NULL;
 978 }
 979
 980 SEGPTR WINAPI FindEnvironmentString16(LPSTR str)
 981 { SEGPTR  spEnv;
 982   LPSTR lpEnv,lpString;
 983   TRACE(shell,"\n");
 984
 985   spEnv = GetDOSEnvironment16();
 986
 987   lpEnv = (LPSTR)PTR_SEG_TO_LIN(spEnv);
 988   lpString = (spEnv)?SHELL_FindString(lpEnv, str):NULL;
 989
 990     if( lpString )              /*  offset should be small enough */
 991         return spEnv + (lpString - lpEnv);
 992     return (SEGPTR)NULL;
 993 }
 994
 995 /*************************************************************************
 996  *                              DoEnvironmentSubst      [SHELL.37]
 997  *
 998  * Replace %KEYWORD% in the str with the value of variable KEYWORD
 999  * from "DOS" environment.
1000  */
1001 DWORD WINAPI DoEnvironmentSubst16(LPSTR str,WORD length)
1002 {
1003   LPSTR   lpEnv = (LPSTR)PTR_SEG_TO_LIN(GetDOSEnvironment16());
1004   LPSTR   lpBuffer = (LPSTR)HeapAlloc( GetProcessHeap(), 0, length);
1005   LPSTR   lpstr = str;
1006   LPSTR   lpbstr = lpBuffer;
1007
1008   CharToOemA(str,str);
1009
1010   TRACE(shell,"accept %s\n", str);
1011
1012   while( *lpstr && lpbstr - lpBuffer < length )
1013    {
1014      LPSTR lpend = lpstr;
1015
1016      if( *lpstr == '%' )
1017        {
1018           do { lpend++; } while( *lpend && *lpend != '%' );
1019           if( *lpend == '%' && lpend - lpstr > 1 )      /* found key */
1020             {
1021                LPSTR lpKey;
1022               *lpend = '\0';
1023                lpKey = SHELL_FindString(lpEnv, lpstr+1);
1024                if( lpKey )                              /* found key value */
1025                  {
1026                    int l = strlen(lpKey);
1027
1028                    if( l > length - (lpbstr - lpBuffer) - 1 )
1029                      {
1030            WARN(shell,"-- Env subst aborted - string too short\n");
1031                       *lpend = '%';
1032                        break;
1033                      }
1034                    strcpy(lpbstr, lpKey);
1035                    lpbstr += l;
1036                  }
1037                else break;
1038               *lpend = '%';
1039                lpstr = lpend + 1;
1040             }
1041           else break;                                   /* back off and whine */
1042
1043           continue;
1044        }
1045
1046      *lpbstr++ = *lpstr++;
1047    }
1048
1049  *lpbstr = '\0';
1050   if( lpstr - str == strlen(str) )
1051     {
1052       strncpy(str, lpBuffer, length);
1053       length = 1;
1054     }
1055   else
1056       length = 0;
1057
1058   TRACE(shell,"-- return %s\n", str);
1059
1060   OemToCharA(str,str);
1061   HeapFree( GetProcessHeap(), 0, lpBuffer);
1062
1063   /*  Return str length in the LOWORD
1064    *  and 1 in HIWORD if subst was successful.
1065    */
1066  return (DWORD)MAKELONG(strlen(str), length);
1067 }
1068
1069 /*************************************************************************
1070  *                              ShellHookProc           [SHELL.103]
1071  * System-wide WH_SHELL hook.
1072  */
1073 LRESULT WINAPI ShellHookProc16(INT16 code, WPARAM16 wParam, LPARAM lParam)
1074 {
1075     TRACE(shell,"%i, %04x, %08x\n", code, wParam,
1076                                                       (unsigned)lParam );
1077     if( SHELL_hHook && SHELL_hWnd )
1078     {
1079         UINT16  uMsg = 0;
1080         switch( code )
1081         {
1082             case HSHELL_WINDOWCREATED:          uMsg = uMsgWndCreated;   break;
1083             case HSHELL_WINDOWDESTROYED:        uMsg = uMsgWndDestroyed; break;
1084             case HSHELL_ACTIVATESHELLWINDOW:    uMsg = uMsgShellActivate;
1085         }
1086         PostMessage16( SHELL_hWnd, uMsg, wParam, 0 );
1087     }
1088     return CallNextHookEx16( WH_SHELL, code, wParam, lParam );
1089 }
1090
1091 /*************************************************************************
1092  *                              RegisterShellHook       [SHELL.102]
1093  */
1094 BOOL WINAPI RegisterShellHook16(HWND16 hWnd, UINT16 uAction)
1095 { TRACE(shell,"%04x [%u]\n", hWnd, uAction );
1096
1097     switch( uAction )
1098   { case 2:  /* register hWnd as a shell window */
1099              if( !SHELL_hHook )
1100       { HMODULE16 hShell = GetModuleHandle16( "SHELL" );
1101         SHELL_hHook = SetWindowsHookEx16( WH_SHELL, ShellHookProc16, hShell, 0 );
1102                 if( SHELL_hHook )
1103         { uMsgWndCreated = RegisterWindowMessageA( lpstrMsgWndCreated );
1104                     uMsgWndDestroyed = RegisterWindowMessageA( lpstrMsgWndDestroyed );
1105                     uMsgShellActivate = RegisterWindowMessageA( lpstrMsgShellActivate );
1106                 }
1107         else
1108           WARN(shell,"-- unable to install ShellHookProc()!\n");
1109              }
1110
1111       if( SHELL_hHook )
1112         return ((SHELL_hWnd = hWnd) != 0);
1113              break;
1114
1115         default:
1116     WARN(shell, "-- unknown code %i\n", uAction );
1117              /* just in case */
1118              SHELL_hWnd = 0;
1119     }
1120     return FALSE;
1121 }