dlls/user32/clipboard.c

   1 /*
   2  * WIN32 clipboard implementation
   3  *
   4  * Copyright 1994 Martin Ayotte
   5  * Copyright 1996 Alex Korobka
   6  * Copyright 1999 Noel Borthwick
   7  * Copyright 2003 Ulrich Czekalla for CodeWeavers
   8  * Copyright 2016 Alexandre Julliard
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  23  *
  24  */
  25
  26 #include "config.h"
  27 #include "wine/port.h"
  28
  29 #include <assert.h>
  30 #include <stdarg.h>
  31 #include <stdlib.h>
  32 #include <sys/types.h>
  33 #include <fcntl.h>
  34 #ifdef HAVE_UNISTD_H
  35 # include <unistd.h>
  36 #endif
  37 #include <string.h>
  38
  39 #include "ntstatus.h"
  40 #define WIN32_NO_STATUS
  41 #include "windef.h"
  42 #include "winbase.h"
  43 #include "wingdi.h"
  44 #include "winuser.h"
  45 #include "winerror.h"
  46 #include "user_private.h"
  47 #include "win.h"
  48
  49 #include "wine/list.h"
  50 #include "wine/unicode.h"
  51 #include "wine/server.h"
  52 #include "wine/debug.h"
  53
  54 WINE_DEFAULT_DEBUG_CHANNEL(clipboard);
  55
  56
  57 struct cached_format
  58 {
  59     struct list entry;       /* entry in cache list */
  60     UINT        format;      /* format id */
  61     UINT        seqno;       /* sequence number when the data was set */
  62     HANDLE      handle;      /* original data handle */
  63 };
  64
  65 static struct list cached_formats = LIST_INIT( cached_formats );
  66 static struct list formats_to_free = LIST_INIT( formats_to_free );
  67
  68 static CRITICAL_SECTION clipboard_cs;
  69 static CRITICAL_SECTION_DEBUG critsect_debug =
  70 {
  71     0, 0, &clipboard_cs,
  72     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  73       0, 0, { (DWORD_PTR)(__FILE__ ": clipboard_cs") }
  74 };
  75 static CRITICAL_SECTION clipboard_cs = { &critsect_debug, -1, 0, 0, 0, 0 };
  76
  77 /* platform-independent version of METAFILEPICT */
  78 struct metafile_pict
  79 {
  80     LONG       mm;
  81     LONG       xExt;
  82     LONG       yExt;
  83     BYTE       bits[1];
  84 };
  85
  86 /* get a debug string for a format id */
  87 static const char *debugstr_format( UINT id )
  88 {
  89     WCHAR buffer[256];
  90
  91     if (GetClipboardFormatNameW( id, buffer, 256 ))
  92         return wine_dbg_sprintf( "%04x %s", id, debugstr_w(buffer) );
  93
  94     switch (id)
  95     {
  96 #define BUILTIN(id) case id: return #id;
  97     BUILTIN(CF_TEXT)
  98     BUILTIN(CF_BITMAP)
  99     BUILTIN(CF_METAFILEPICT)
 100     BUILTIN(CF_SYLK)
 101     BUILTIN(CF_DIF)
 102     BUILTIN(CF_TIFF)
 103     BUILTIN(CF_OEMTEXT)
 104     BUILTIN(CF_DIB)
 105     BUILTIN(CF_PALETTE)
 106     BUILTIN(CF_PENDATA)
 107     BUILTIN(CF_RIFF)
 108     BUILTIN(CF_WAVE)
 109     BUILTIN(CF_UNICODETEXT)
 110     BUILTIN(CF_ENHMETAFILE)
 111     BUILTIN(CF_HDROP)
 112     BUILTIN(CF_LOCALE)
 113     BUILTIN(CF_DIBV5)
 114     BUILTIN(CF_OWNERDISPLAY)
 115     BUILTIN(CF_DSPTEXT)
 116     BUILTIN(CF_DSPBITMAP)
 117     BUILTIN(CF_DSPMETAFILEPICT)
 118     BUILTIN(CF_DSPENHMETAFILE)
 119 #undef BUILTIN
 120     default: return wine_dbg_sprintf( "%04x", id );
 121     }
 122 }
 123
 124 /* build the data to send to the server in SetClipboardData */
 125 static HANDLE marshal_data( UINT format, HANDLE handle, data_size_t *ret_size )
 126 {
 127     SIZE_T size;
 128
 129     switch (format)
 130     {
 131     case CF_BITMAP:
 132     case CF_DSPBITMAP:
 133         {
 134             BITMAP bitmap, *bm;
 135             if (!GetObjectW( handle, sizeof(bitmap), &bitmap )) return 0;
 136             size = abs( bitmap.bmHeight ) * ((((bitmap.bmWidth * bitmap.bmBitsPixel) + 15) >> 3) & ~1);
 137             *ret_size = sizeof(bitmap) + size;
 138             if (!(bm = GlobalAlloc( GMEM_FIXED, *ret_size ))) return 0;
 139             *bm = bitmap;
 140             GetBitmapBits( handle, size, bm + 1 );
 141             return bm;
 142         }
 143     case CF_PALETTE:
 144         {
 145             LOGPALETTE *pal;
 146             if (!(size = GetPaletteEntries( handle, 0, 0, NULL ))) return 0;
 147             *ret_size = offsetof( LOGPALETTE, palPalEntry[size] );
 148             if (!(pal = GlobalAlloc( GMEM_FIXED, *ret_size ))) return 0;
 149             pal->palVersion = 0x300;
 150             pal->palNumEntries = size;
 151             GetPaletteEntries( handle, 0, size, pal->palPalEntry );
 152             return pal;
 153         }
 154     case CF_ENHMETAFILE:
 155     case CF_DSPENHMETAFILE:
 156         {
 157             BYTE *ret;
 158             if (!(size = GetEnhMetaFileBits( handle, 0, NULL ))) return 0;
 159             if (!(ret = GlobalAlloc( GMEM_FIXED, size ))) return 0;
 160             GetEnhMetaFileBits( handle, size, ret );
 161             *ret_size = size;
 162             return ret;
 163         }
 164     case CF_METAFILEPICT:
 165     case CF_DSPMETAFILEPICT:
 166         {
 167             METAFILEPICT *mf;
 168             struct metafile_pict *mfbits;
 169             if (!(mf = GlobalLock( handle ))) return 0;
 170             if (!(size = GetMetaFileBitsEx( mf->hMF, 0, NULL )))
 171             {
 172                 GlobalUnlock( handle );
 173                 return 0;
 174             }
 175             *ret_size = offsetof( struct metafile_pict, bits[size] );
 176             if (!(mfbits = GlobalAlloc( GMEM_FIXED, *ret_size )))
 177             {
 178                 GlobalUnlock( handle );
 179                 return 0;
 180             }
 181             mfbits->mm   = mf->mm;
 182             mfbits->xExt = mf->xExt;
 183             mfbits->yExt = mf->yExt;
 184             GetMetaFileBitsEx( mf->hMF, size, mfbits->bits );
 185             GlobalUnlock( handle );
 186             return mfbits;
 187         }
 188     case CF_UNICODETEXT:
 189         {
 190             WCHAR *ptr;
 191             if (!(size = GlobalSize( handle ))) return 0;
 192             if ((data_size_t)size != size) return 0;
 193             if (!(ptr = GlobalLock( handle ))) return 0;
 194             ptr[(size + 1) / sizeof(WCHAR) - 1] = 0;  /* enforce null-termination */
 195             GlobalUnlock( handle );
 196             *ret_size = size;
 197             return handle;
 198         }
 199     case CF_TEXT:
 200     case CF_OEMTEXT:
 201         {
 202             char *ptr;
 203             if (!(size = GlobalSize( handle ))) return 0;
 204             if ((data_size_t)size != size) return 0;
 205             if (!(ptr = GlobalLock( handle ))) return 0;
 206             ptr[size - 1] = 0;  /* enforce null-termination */
 207             GlobalUnlock( handle );
 208             *ret_size = size;
 209             return handle;
 210         }
 211     default:
 212         if (!(size = GlobalSize( handle ))) return 0;
 213         if ((data_size_t)size != size) return 0;
 214         *ret_size = size;
 215         return handle;
 216     }
 217 }
 218
 219 /* rebuild the target handle from the data received in GetClipboardData */
 220 static HANDLE unmarshal_data( UINT format, void *data, data_size_t size )
 221 {
 222     HANDLE handle = GlobalReAlloc( data, size, 0 );  /* release unused space */
 223
 224     switch (format)
 225     {
 226     case CF_BITMAP:
 227         {
 228             BITMAP *bm = handle;
 229             if (size < sizeof(*bm)) break;
 230             if (size < bm->bmWidthBytes * abs( bm->bmHeight )) break;
 231             if (bm->bmBits) break;  /* DIB sections are not supported across processes */
 232             bm->bmBits = bm + 1;
 233             return CreateBitmapIndirect( bm );
 234         }
 235     case CF_DSPBITMAP:  /* not supported across processes */
 236         break;
 237     case CF_PALETTE:
 238         {
 239             LOGPALETTE *pal = handle;
 240             if (size < sizeof(*pal)) break;
 241             if (size < offsetof( LOGPALETTE, palPalEntry[pal->palNumEntries] )) break;
 242             return CreatePalette( pal );
 243         }
 244     case CF_ENHMETAFILE:
 245     case CF_DSPENHMETAFILE:
 246         return SetEnhMetaFileBits( size, handle );
 247     case CF_METAFILEPICT:
 248     case CF_DSPMETAFILEPICT:
 249         {
 250             METAFILEPICT mf;
 251             struct metafile_pict *mfbits = handle;
 252             if (size <= sizeof(*mfbits)) break;
 253             mf.mm   = mfbits->mm;
 254             mf.xExt = mfbits->xExt;
 255             mf.yExt = mfbits->yExt;
 256             mf.hMF  = SetMetaFileBitsEx( size - offsetof( struct metafile_pict, bits ), mfbits->bits );
 257             *(METAFILEPICT *)handle = mf;
 258             return handle;
 259         }
 260     }
 261     return handle;
 262 }
 263
 264 /* retrieve a data format from the cache */
 265 static struct cached_format *get_cached_format( UINT format )
 266 {
 267     struct cached_format *cache;
 268
 269     LIST_FOR_EACH_ENTRY( cache, &cached_formats, struct cached_format, entry )
 270         if (cache->format == format) return cache;
 271     return NULL;
 272 }
 273
 274 /* store data in the cache, or reuse the existing one if available */
 275 static HANDLE cache_data( UINT format, HANDLE data, data_size_t size, UINT seqno,
 276                           struct cached_format *cache )
 277 {
 278     if (cache)
 279     {
 280         if (seqno == cache->seqno)  /* we can reuse the cached data */
 281         {
 282             GlobalFree( data );
 283             return cache->handle;
 284         }
 285         /* cache entry is stale, remove it */
 286         list_remove( &cache->entry );
 287         list_add_tail( &formats_to_free, &cache->entry );
 288     }
 289
 290     /* allocate new cache entry */
 291     if (!(cache = HeapAlloc( GetProcessHeap(), 0, sizeof(*cache) )))
 292     {
 293         GlobalFree( data );
 294         return 0;
 295     }
 296     cache->format = format;
 297     cache->seqno  = seqno;
 298     cache->handle = unmarshal_data( format, data, size );
 299     list_add_tail( &cached_formats, &cache->entry );
 300     return cache->handle;
 301 }
 302
 303 /* free a single cached format */
 304 static void free_cached_data( struct cached_format *cache )
 305 {
 306     void *ptr;
 307
 308     switch (cache->format)
 309     {
 310     case CF_BITMAP:
 311     case CF_DSPBITMAP:
 312     case CF_PALETTE:
 313         DeleteObject( cache->handle );
 314         break;
 315     case CF_ENHMETAFILE:
 316     case CF_DSPENHMETAFILE:
 317         DeleteEnhMetaFile( cache->handle );
 318         break;
 319     case CF_METAFILEPICT:
 320     case CF_DSPMETAFILEPICT:
 321         if ((ptr = GlobalLock( cache->handle )))
 322         {
 323             DeleteMetaFile( ((METAFILEPICT *)ptr)->hMF );
 324             GlobalUnlock( cache->handle );
 325         }
 326         GlobalFree( cache->handle );
 327         break;
 328     default:
 329         GlobalFree( cache->handle );
 330         break;
 331     }
 332     list_remove( &cache->entry );
 333     HeapFree( GetProcessHeap(), 0, cache );
 334 }
 335
 336 /* clear global memory formats; special types are freed on EmptyClipboard */
 337 static void invalidate_memory_formats(void)
 338 {
 339     struct cached_format *cache, *next;
 340
 341     LIST_FOR_EACH_ENTRY_SAFE( cache, next, &cached_formats, struct cached_format, entry )
 342     {
 343         switch (cache->format)
 344         {
 345         case CF_BITMAP:
 346         case CF_DSPBITMAP:
 347         case CF_PALETTE:
 348         case CF_ENHMETAFILE:
 349         case CF_DSPENHMETAFILE:
 350         case CF_METAFILEPICT:
 351         case CF_DSPMETAFILEPICT:
 352             continue;
 353         default:
 354             free_cached_data( cache );
 355             break;
 356         }
 357     }
 358 }
 359
 360 /* free all the data in the cache */
 361 static void free_cached_formats(void)
 362 {
 363     struct list *ptr;
 364
 365     list_move_tail( &formats_to_free, &cached_formats );
 366     while ((ptr = list_head( &formats_to_free )))
 367         free_cached_data( LIST_ENTRY( ptr, struct cached_format, entry ));
 368 }
 369
 370 /* get the clipboard locale stored in the CF_LOCALE format */
 371 static LCID get_clipboard_locale(void)
 372 {
 373     HANDLE data;
 374     LCID lcid = GetUserDefaultLCID();
 375
 376     if ((data = GetClipboardData( CF_LOCALE )))
 377     {
 378         LCID *ptr = GlobalLock( data );
 379         if (ptr)
 380         {
 381             if (GlobalSize( data ) >= sizeof(*ptr)) lcid = *ptr;
 382             GlobalUnlock( data );
 383         }
 384     }
 385     return lcid;
 386 }
 387
 388 /* get the codepage to use for text conversions in the specified format (CF_TEXT or CF_OEMTEXT) */
 389 static UINT get_format_codepage( LCID lcid, UINT format )
 390 {
 391     LCTYPE type = (format == CF_TEXT) ? LOCALE_IDEFAULTANSICODEPAGE : LOCALE_IDEFAULTCODEPAGE;
 392     UINT ret;
 393
 394     if (!GetLocaleInfoW( lcid, type | LOCALE_RETURN_NUMBER, (LPWSTR)&ret, sizeof(ret)/sizeof(WCHAR) ))
 395         ret = (format == CF_TEXT) ? CP_ACP : CP_OEMCP;
 396     return ret;
 397 }
 398
 399 /* render synthesized ANSI text based on the contents of the 'from' format */
 400 static HANDLE render_synthesized_textA( HANDLE data, UINT format, UINT from )
 401 {
 402     void *src;
 403     WCHAR *srcW = NULL;
 404     HANDLE ret = 0;
 405     LCID lcid = get_clipboard_locale();
 406     UINT codepage = get_format_codepage( lcid, format );
 407     UINT len, size = GlobalSize( data );
 408
 409     if (!(src = GlobalLock( data ))) return 0;
 410
 411     if (from != CF_UNICODETEXT)  /* first convert incoming format to Unicode */
 412     {
 413         UINT from_codepage = get_format_codepage( lcid, from );
 414         len = MultiByteToWideChar( from_codepage, 0, src, size, NULL, 0 );
 415         if (!(srcW = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) ))) goto done;
 416         MultiByteToWideChar( from_codepage, 0, src, size, srcW, len );
 417         src = srcW;
 418         size = len * sizeof(WCHAR);
 419     }
 420
 421     if ((len = WideCharToMultiByte( codepage, 0, src, size / sizeof(WCHAR), NULL, 0, NULL, NULL )))
 422     {
 423         if ((ret = GlobalAlloc( GMEM_FIXED, len )))
 424             WideCharToMultiByte( codepage, 0, src, size / sizeof(WCHAR), ret, len, NULL, NULL );
 425     }
 426
 427 done:
 428     HeapFree( GetProcessHeap(), 0, srcW );
 429     GlobalUnlock( data );
 430     return ret;
 431 }
 432
 433 /* render synthesized Unicode text based on the contents of the 'from' format */
 434 static HANDLE render_synthesized_textW( HANDLE data, UINT from )
 435 {
 436     char *src;
 437     HANDLE ret = 0;
 438     UINT len, size = GlobalSize( data );
 439     UINT codepage = get_format_codepage( get_clipboard_locale(), from );
 440
 441     if (!(src = GlobalLock( data ))) return 0;
 442
 443     if ((len = MultiByteToWideChar( codepage, 0, src, size, NULL, 0 )))
 444     {
 445         if ((ret = GlobalAlloc( GMEM_FIXED, len * sizeof(WCHAR) )))
 446             MultiByteToWideChar( codepage, 0, src, size, ret, len );
 447     }
 448     GlobalUnlock( data );
 449     return ret;
 450 }
 451
 452 /* render a synthesized bitmap based on the DIB clipboard data */
 453 static HANDLE render_synthesized_bitmap( HANDLE data, UINT from )
 454 {
 455     BITMAPINFO *bmi;
 456     HANDLE ret = 0;
 457     HDC hdc = GetDC( 0 );
 458
 459     if ((bmi = GlobalLock( data )))
 460     {
 461         /* FIXME: validate data size */
 462         ret = CreateDIBitmap( hdc, &bmi->bmiHeader, CBM_INIT,
 463                               (char *)bmi + bitmap_info_size( bmi, DIB_RGB_COLORS ),
 464                               bmi, DIB_RGB_COLORS );
 465         GlobalUnlock( data );
 466     }
 467     ReleaseDC( 0, hdc );
 468     return ret;
 469 }
 470
 471 /* render a synthesized DIB based on the clipboard data */
 472 static HANDLE render_synthesized_dib( HANDLE data, UINT format, UINT from )
 473 {
 474     BITMAPINFO *bmi, *src;
 475     DWORD src_size, header_size, bits_size;
 476     HANDLE ret = 0;
 477     HDC hdc = GetDC( 0 );
 478
 479     if (from == CF_BITMAP)
 480     {
 481         BITMAPV5HEADER header;
 482
 483         memset( &header, 0, sizeof(header) );
 484         header.bV5Size = (format == CF_DIBV5) ? sizeof(BITMAPV5HEADER) : sizeof(BITMAPINFOHEADER);
 485         if (!GetDIBits( hdc, data, 0, 0, NULL, (BITMAPINFO *)&header, DIB_RGB_COLORS )) goto done;
 486
 487         header_size = bitmap_info_size( (BITMAPINFO *)&header, DIB_RGB_COLORS );
 488         if (!(ret = GlobalAlloc( GMEM_FIXED, header_size + header.bV5SizeImage ))) goto done;
 489         bmi = (BITMAPINFO *)ret;
 490         memset( bmi, 0, header_size );
 491         memcpy( bmi, &header, header.bV5Size );
 492         GetDIBits( hdc, data, 0, abs(header.bV5Height), (char *)bmi + header_size, bmi, DIB_RGB_COLORS );
 493     }
 494     else
 495     {
 496         SIZE_T size = GlobalSize( data );
 497
 498         if (size < sizeof(*bmi)) goto done;
 499         if (!(src = GlobalLock( data ))) goto done;
 500
 501         src_size = bitmap_info_size( src, DIB_RGB_COLORS );
 502         if (size <= src_size)
 503         {
 504             GlobalUnlock( data );
 505             goto done;
 506         }
 507         bits_size = size - src_size;
 508         header_size = (format == CF_DIBV5) ? sizeof(BITMAPV5HEADER) :
 509             offsetof( BITMAPINFO, bmiColors[src->bmiHeader.biCompression == BI_BITFIELDS ? 3 : 0] );
 510
 511         if ((ret = GlobalAlloc( GMEM_FIXED, header_size + bits_size )))
 512         {
 513             bmi = (BITMAPINFO *)ret;
 514             memset( bmi, 0, header_size );
 515             memcpy( bmi, src, min( header_size, src_size ));
 516             bmi->bmiHeader.biSize = header_size;
 517             /* FIXME: convert colors according to DIBv5 color profile */
 518             memcpy( (char *)bmi + header_size, (char *)src + src_size, bits_size );
 519         }
 520         GlobalUnlock( data );
 521     }
 522
 523 done:
 524     ReleaseDC( 0, hdc );
 525     return ret;
 526 }
 527
 528 /* render a synthesized metafile based on the enhmetafile clipboard data */
 529 static HANDLE render_synthesized_metafile( HANDLE data )
 530 {
 531     HANDLE ret = 0;
 532     UINT size;
 533     void *bits;
 534     METAFILEPICT *pict;
 535     ENHMETAHEADER header;
 536     HDC hdc = GetDC( 0 );
 537
 538     size = GetWinMetaFileBits( data, 0, NULL, MM_ISOTROPIC, hdc );
 539     if ((bits = HeapAlloc( GetProcessHeap(), 0, size )))
 540     {
 541         if (GetEnhMetaFileHeader( data, sizeof(header), &header ) &&
 542             GetWinMetaFileBits( data, size, bits, MM_ISOTROPIC, hdc ))
 543         {
 544             if ((ret = GlobalAlloc( GMEM_FIXED, sizeof(*pict) )))
 545             {
 546                 pict = (METAFILEPICT *)ret;
 547                 pict->mm   = MM_ISOTROPIC;
 548                 pict->xExt = header.rclFrame.right - header.rclFrame.left;
 549                 pict->yExt = header.rclFrame.bottom - header.rclFrame.top;
 550                 pict->hMF  = SetMetaFileBitsEx( size, bits );
 551             }
 552         }
 553         HeapFree( GetProcessHeap(), 0, bits );
 554     }
 555     ReleaseDC( 0, hdc );
 556     return ret;
 557 }
 558
 559 /* render a synthesized enhmetafile based on the metafile clipboard data */
 560 static HANDLE render_synthesized_enhmetafile( HANDLE data )
 561 {
 562     METAFILEPICT *pict;
 563     HANDLE ret = 0;
 564     UINT size;
 565     void *bits;
 566
 567     if (!(pict = GlobalLock( data ))) return 0;
 568
 569     size = GetMetaFileBitsEx( pict->hMF, 0, NULL );
 570     if ((bits = HeapAlloc( GetProcessHeap(), 0, size )))
 571     {
 572         GetMetaFileBitsEx( pict->hMF, size, bits );
 573         ret = SetWinMetaFileBits( size, bits, NULL, pict );
 574         HeapFree( GetProcessHeap(), 0, bits );
 575     }
 576
 577     GlobalUnlock( data );
 578     return ret;
 579 }
 580
 581 /* render a synthesized format */
 582 static HANDLE render_synthesized_format( UINT format, UINT from )
 583 {
 584     HANDLE data = GetClipboardData( from );
 585
 586     if (!data) return 0;
 587     TRACE( "rendering %s from %s\n", debugstr_format( format ), debugstr_format( from ));
 588
 589     switch (format)
 590     {
 591     case CF_TEXT:
 592     case CF_OEMTEXT:
 593         data = render_synthesized_textA( data, format, from );
 594         break;
 595     case CF_UNICODETEXT:
 596         data = render_synthesized_textW( data, from );
 597         break;
 598     case CF_BITMAP:
 599         data = render_synthesized_bitmap( data, from );
 600         break;
 601     case CF_DIB:
 602     case CF_DIBV5:
 603         data = render_synthesized_dib( data, format, from );
 604         break;
 605     case CF_METAFILEPICT:
 606         data = render_synthesized_metafile( data );
 607         break;
 608     case CF_ENHMETAFILE:
 609         data = render_synthesized_enhmetafile( data );
 610         break;
 611     default:
 612         assert( 0 );
 613     }
 614     if (data)
 615     {
 616         TRACE( "adding %s %p\n", debugstr_format( format ), data );
 617         SetClipboardData( format, data );
 618     }
 619     return data;
 620 }
 621
 622 /**************************************************************************
 623  *      CLIPBOARD_ReleaseOwner
 624  */
 625 void CLIPBOARD_ReleaseOwner( HWND hwnd )
 626 {
 627     HWND viewer = 0, owner = 0;
 628
 629     SendMessageW( hwnd, WM_RENDERALLFORMATS, 0, 0 );
 630
 631     SERVER_START_REQ( release_clipboard )
 632     {
 633         req->owner = wine_server_user_handle( hwnd );
 634         if (!wine_server_call( req ))
 635         {
 636             viewer = wine_server_ptr_handle( reply->viewer );
 637             owner = wine_server_ptr_handle( reply->owner );
 638         }
 639     }
 640     SERVER_END_REQ;
 641
 642     if (viewer) SendNotifyMessageW( viewer, WM_DRAWCLIPBOARD, (WPARAM)owner, 0 );
 643 }
 644
 645
 646 /**************************************************************************
 647  *              RegisterClipboardFormatW (USER32.@)
 648  */
 649 UINT WINAPI RegisterClipboardFormatW( LPCWSTR name )
 650 {
 651     return GlobalAddAtomW( name );
 652 }
 653
 654
 655 /**************************************************************************
 656  *              RegisterClipboardFormatA (USER32.@)
 657  */
 658 UINT WINAPI RegisterClipboardFormatA( LPCSTR name )
 659 {
 660     return GlobalAddAtomA( name );
 661 }
 662
 663
 664 /**************************************************************************
 665  *              GetClipboardFormatNameW (USER32.@)
 666  */
 667 INT WINAPI GetClipboardFormatNameW( UINT format, LPWSTR buffer, INT maxlen )
 668 {
 669     if (format < MAXINTATOM || format > 0xffff) return 0;
 670     return GlobalGetAtomNameW( format, buffer, maxlen );
 671 }
 672
 673
 674 /**************************************************************************
 675  *              GetClipboardFormatNameA (USER32.@)
 676  */
 677 INT WINAPI GetClipboardFormatNameA( UINT format, LPSTR buffer, INT maxlen )
 678 {
 679     if (format < MAXINTATOM || format > 0xffff) return 0;
 680     return GlobalGetAtomNameA( format, buffer, maxlen );
 681 }
 682
 683
 684 /**************************************************************************
 685  *              OpenClipboard (USER32.@)
 686  */
 687 BOOL WINAPI OpenClipboard( HWND hwnd )
 688 {
 689     BOOL ret;
 690     HWND owner;
 691
 692     TRACE( "%p\n", hwnd );
 693
 694     USER_Driver->pUpdateClipboard();
 695
 696     EnterCriticalSection( &clipboard_cs );
 697
 698     SERVER_START_REQ( open_clipboard )
 699     {
 700         req->window = wine_server_user_handle( hwnd );
 701         ret = !wine_server_call_err( req );
 702         owner = wine_server_ptr_handle( reply->owner );
 703     }
 704     SERVER_END_REQ;
 705
 706     if (ret && !WIN_IsCurrentProcess( owner )) invalidate_memory_formats();
 707
 708     LeaveCriticalSection( &clipboard_cs );
 709     return ret;
 710 }
 711
 712
 713 /**************************************************************************
 714  *              CloseClipboard (USER32.@)
 715  */
 716 BOOL WINAPI CloseClipboard(void)
 717 {
 718     HWND viewer = 0, owner = 0;
 719     BOOL ret;
 720
 721     TRACE( "\n" );
 722
 723     SERVER_START_REQ( close_clipboard )
 724     {
 725         if ((ret = !wine_server_call_err( req )))
 726         {
 727             viewer = wine_server_ptr_handle( reply->viewer );
 728             owner = wine_server_ptr_handle( reply->owner );
 729         }
 730     }
 731     SERVER_END_REQ;
 732
 733     if (viewer) SendNotifyMessageW( viewer, WM_DRAWCLIPBOARD, (WPARAM)owner, 0 );
 734     return ret;
 735 }
 736
 737
 738 /**************************************************************************
 739  *              EmptyClipboard (USER32.@)
 740  * Empties and acquires ownership of the clipboard
 741  */
 742 BOOL WINAPI EmptyClipboard(void)
 743 {
 744     BOOL ret;
 745     HWND owner = GetClipboardOwner();
 746
 747     TRACE( "owner %p\n", owner );
 748
 749     if (owner) SendMessageTimeoutW( owner, WM_DESTROYCLIPBOARD, 0, 0, SMTO_ABORTIFHUNG, 5000, NULL );
 750
 751     EnterCriticalSection( &clipboard_cs );
 752
 753     SERVER_START_REQ( empty_clipboard )
 754     {
 755         ret = !wine_server_call_err( req );
 756     }
 757     SERVER_END_REQ;
 758
 759     if (ret) free_cached_formats();
 760
 761     LeaveCriticalSection( &clipboard_cs );
 762     return ret;
 763 }
 764
 765
 766 /**************************************************************************
 767  *              GetClipboardOwner (USER32.@)
 768  */
 769 HWND WINAPI GetClipboardOwner(void)
 770 {
 771     HWND hWndOwner = 0;
 772
 773     SERVER_START_REQ( get_clipboard_info )
 774     {
 775         if (!wine_server_call_err( req )) hWndOwner = wine_server_ptr_handle( reply->owner );
 776     }
 777     SERVER_END_REQ;
 778
 779     TRACE( "returning %p\n", hWndOwner );
 780
 781     return hWndOwner;
 782 }
 783
 784
 785 /**************************************************************************
 786  *              GetOpenClipboardWindow (USER32.@)
 787  */
 788 HWND WINAPI GetOpenClipboardWindow(void)
 789 {
 790     HWND hWndOpen = 0;
 791
 792     SERVER_START_REQ( get_clipboard_info )
 793     {
 794         if (!wine_server_call_err( req )) hWndOpen = wine_server_ptr_handle( reply->window );
 795     }
 796     SERVER_END_REQ;
 797
 798     TRACE( "returning %p\n", hWndOpen );
 799
 800     return hWndOpen;
 801 }
 802
 803
 804 /**************************************************************************
 805  *              SetClipboardViewer (USER32.@)
 806  */
 807 HWND WINAPI SetClipboardViewer( HWND hwnd )
 808 {
 809     HWND prev = 0, owner = 0;
 810
 811     SERVER_START_REQ( set_clipboard_viewer )
 812     {
 813         req->viewer = wine_server_user_handle( hwnd );
 814         if (!wine_server_call_err( req ))
 815         {
 816             prev = wine_server_ptr_handle( reply->old_viewer );
 817             owner = wine_server_ptr_handle( reply->owner );
 818         }
 819     }
 820     SERVER_END_REQ;
 821
 822     if (hwnd) SendNotifyMessageW( hwnd, WM_DRAWCLIPBOARD, (WPARAM)owner, 0 );
 823
 824     TRACE( "%p returning %p\n", hwnd, prev );
 825     return prev;
 826 }
 827
 828
 829 /**************************************************************************
 830  *              GetClipboardViewer (USER32.@)
 831  */
 832 HWND WINAPI GetClipboardViewer(void)
 833 {
 834     HWND hWndViewer = 0;
 835
 836     SERVER_START_REQ( get_clipboard_info )
 837     {
 838         if (!wine_server_call_err( req )) hWndViewer = wine_server_ptr_handle( reply->viewer );
 839     }
 840     SERVER_END_REQ;
 841
 842     TRACE( "returning %p\n", hWndViewer );
 843
 844     return hWndViewer;
 845 }
 846
 847
 848 /**************************************************************************
 849  *              ChangeClipboardChain (USER32.@)
 850  */
 851 BOOL WINAPI ChangeClipboardChain( HWND hwnd, HWND next )
 852 {
 853     NTSTATUS status;
 854     HWND viewer;
 855
 856     if (!hwnd) return FALSE;
 857
 858     SERVER_START_REQ( set_clipboard_viewer )
 859     {
 860         req->viewer = wine_server_user_handle( next );
 861         req->previous = wine_server_user_handle( hwnd );
 862         status = wine_server_call( req );
 863         viewer = wine_server_ptr_handle( reply->old_viewer );
 864     }
 865     SERVER_END_REQ;
 866
 867     if (status == STATUS_PENDING)
 868         return !SendMessageW( viewer, WM_CHANGECBCHAIN, (WPARAM)hwnd, (LPARAM)next );
 869
 870     if (status) SetLastError( RtlNtStatusToDosError( status ));
 871     return !status;
 872 }
 873
 874
 875 /**************************************************************************
 876  *              SetClipboardData (USER32.@)
 877  */
 878 HANDLE WINAPI SetClipboardData( UINT format, HANDLE data )
 879 {
 880     struct cached_format *cache = NULL;
 881     void *ptr = NULL;
 882     data_size_t size = 0;
 883     HANDLE handle = data, retval = 0;
 884     NTSTATUS status = STATUS_SUCCESS;
 885
 886     TRACE( "%s %p\n", debugstr_format( format ), data );
 887
 888     if (data)
 889     {
 890         if (!(handle = marshal_data( format, data, &size ))) return 0;
 891         if (!(ptr = GlobalLock( handle ))) goto done;
 892         if (!(cache = HeapAlloc( GetProcessHeap(), 0, sizeof(*cache) ))) goto done;
 893         cache->format = format;
 894         cache->handle = data;
 895     }
 896
 897     EnterCriticalSection( &clipboard_cs );
 898
 899     SERVER_START_REQ( set_clipboard_data )
 900     {
 901         req->format = format;
 902         req->lcid = GetUserDefaultLCID();
 903         wine_server_add_data( req, ptr, size );
 904         if (!(status = wine_server_call( req )))
 905         {
 906             if (cache) cache->seqno = reply->seqno;
 907         }
 908     }
 909     SERVER_END_REQ;
 910
 911     if (!status)
 912     {
 913         /* free the previous entry if any */
 914         struct cached_format *prev;
 915
 916         if ((prev = get_cached_format( format ))) free_cached_data( prev );
 917         if (cache) list_add_tail( &cached_formats, &cache->entry );
 918         retval = data;
 919     }
 920     else HeapFree( GetProcessHeap(), 0, cache );
 921
 922     LeaveCriticalSection( &clipboard_cs );
 923
 924 done:
 925     if (ptr) GlobalUnlock( handle );
 926     if (handle != data) GlobalFree( handle );
 927     if (status) SetLastError( RtlNtStatusToDosError( status ));
 928     return retval;
 929 }
 930
 931
 932 /**************************************************************************
 933  *              CountClipboardFormats (USER32.@)
 934  */
 935 INT WINAPI CountClipboardFormats(void)
 936 {
 937     INT count = 0;
 938
 939     USER_Driver->pUpdateClipboard();
 940
 941     SERVER_START_REQ( get_clipboard_formats )
 942     {
 943         wine_server_call( req );
 944         count = reply->count;
 945     }
 946     SERVER_END_REQ;
 947
 948     TRACE("returning %d\n", count);
 949     return count;
 950 }
 951
 952
 953 /**************************************************************************
 954  *              EnumClipboardFormats (USER32.@)
 955  */
 956 UINT WINAPI EnumClipboardFormats( UINT format )
 957 {
 958     UINT ret = 0;
 959
 960     SERVER_START_REQ( enum_clipboard_formats )
 961     {
 962         req->previous = format;
 963         if (!wine_server_call_err( req ))
 964         {
 965             ret = reply->format;
 966             SetLastError( ERROR_SUCCESS );
 967         }
 968     }
 969     SERVER_END_REQ;
 970
 971     TRACE( "%s -> %s\n", debugstr_format( format ), debugstr_format( ret ));
 972     return ret;
 973 }
 974
 975
 976 /**************************************************************************
 977  *              IsClipboardFormatAvailable (USER32.@)
 978  */
 979 BOOL WINAPI IsClipboardFormatAvailable( UINT format )
 980 {
 981     BOOL ret = FALSE;
 982
 983     if (!format) return FALSE;
 984
 985     USER_Driver->pUpdateClipboard();
 986
 987     SERVER_START_REQ( get_clipboard_formats )
 988     {
 989         req->format = format;
 990         if (!wine_server_call_err( req )) ret = (reply->count > 0);
 991     }
 992     SERVER_END_REQ;
 993     TRACE( "%s -> %u\n", debugstr_format( format ), ret );
 994     return ret;
 995 }
 996
 997
 998 /**************************************************************************
 999  *              GetUpdatedClipboardFormats (USER32.@)
1000  */
1001 BOOL WINAPI GetUpdatedClipboardFormats( UINT *formats, UINT size, UINT *out_size )
1002 {
1003     BOOL ret;
1004
1005     if (!out_size)
1006     {
1007         SetLastError( ERROR_NOACCESS );
1008         return FALSE;
1009     }
1010
1011     USER_Driver->pUpdateClipboard();
1012
1013     SERVER_START_REQ( get_clipboard_formats )
1014     {
1015         if (formats) wine_server_set_reply( req, formats, size * sizeof(*formats) );
1016         ret = !wine_server_call_err( req );
1017         *out_size = reply->count;
1018     }
1019     SERVER_END_REQ;
1020
1021     TRACE( "%p %u returning %u formats, ret %u\n", formats, size, *out_size, ret );
1022     if (!ret && !formats && *out_size) SetLastError( ERROR_NOACCESS );
1023     return ret;
1024 }
1025
1026
1027 /**************************************************************************
1028  *              GetClipboardData (USER32.@)
1029  */
1030 HANDLE WINAPI GetClipboardData( UINT format )
1031 {
1032     struct cached_format *cache;
1033     NTSTATUS status;
1034     UINT from, data_seqno;
1035     HWND owner;
1036     HANDLE data;
1037     UINT size = 1024;
1038     BOOL render = TRUE;
1039
1040     for (;;)
1041     {
1042         if (!(data = GlobalAlloc( GMEM_FIXED, size ))) return 0;
1043
1044         EnterCriticalSection( &clipboard_cs );
1045         cache = get_cached_format( format );
1046
1047         SERVER_START_REQ( get_clipboard_data )
1048         {
1049             req->format = format;
1050             req->render = render;
1051             if (cache)
1052             {
1053                 req->cached = 1;
1054                 req->seqno = cache->seqno;
1055             }
1056             wine_server_set_reply( req, data, size );
1057             status = wine_server_call( req );
1058             from = reply->from;
1059             size = reply->total;
1060             data_seqno = reply->seqno;
1061             owner = wine_server_ptr_handle( reply->owner );
1062         }
1063         SERVER_END_REQ;
1064
1065         if (!status && size)
1066         {
1067             data = cache_data( format, data, size, data_seqno, cache );
1068             LeaveCriticalSection( &clipboard_cs );
1069             TRACE( "%s returning %p\n", debugstr_format( format ), data );
1070             return data;
1071         }
1072         LeaveCriticalSection( &clipboard_cs );
1073         GlobalFree( data );
1074
1075         if (status == STATUS_BUFFER_OVERFLOW) continue;  /* retry with the new size */
1076         if (status)
1077         {
1078             SetLastError( RtlNtStatusToDosError( status ));
1079             TRACE( "%s error %08x\n", debugstr_format( format ), status );
1080             return 0;
1081         }
1082         if (render)  /* try rendering it */
1083         {
1084             render = FALSE;
1085             if (from)
1086             {
1087                 render_synthesized_format( format, from );
1088                 continue;
1089             }
1090             else if (owner)
1091             {
1092                 TRACE( "%s sending WM_RENDERFORMAT to %p\n", debugstr_format( format ), owner );
1093                 SendMessageW( owner, WM_RENDERFORMAT, format, 0 );
1094                 continue;
1095             }
1096         }
1097         TRACE( "%s returning 0\n", debugstr_format( format ));
1098         return 0;
1099     }
1100 }
1101
1102
1103 /**************************************************************************
1104  *              GetPriorityClipboardFormat (USER32.@)
1105  */
1106 INT WINAPI GetPriorityClipboardFormat(UINT *list, INT nCount)
1107 {
1108     int i;
1109
1110     TRACE( "%p %u\n", list, nCount );
1111
1112     if(CountClipboardFormats() == 0)
1113         return 0;
1114
1115     for (i = 0; i < nCount; i++)
1116         if (IsClipboardFormatAvailable(list[i]))
1117             return list[i];
1118
1119     return -1;
1120 }
1121
1122
1123 /**************************************************************************
1124  *              GetClipboardSequenceNumber (USER32.@)
1125  */
1126 DWORD WINAPI GetClipboardSequenceNumber(VOID)
1127 {
1128     DWORD seqno = 0;
1129
1130     SERVER_START_REQ( get_clipboard_info )
1131     {
1132         if (!wine_server_call_err( req )) seqno = reply->seqno;
1133     }
1134     SERVER_END_REQ;
1135
1136     TRACE( "returning %u\n", seqno );
1137     return seqno;
1138 }
1139
1140 /**************************************************************************
1141  *              AddClipboardFormatListener (USER32.@)
1142  */
1143 BOOL WINAPI AddClipboardFormatListener(HWND hwnd)
1144 {
1145     BOOL ret;
1146
1147     SERVER_START_REQ( add_clipboard_listener )
1148     {
1149         req->window = wine_server_user_handle( hwnd );
1150         ret = !wine_server_call_err( req );
1151     }
1152     SERVER_END_REQ;
1153     return ret;
1154 }
1155
1156 /**************************************************************************
1157  *              RemoveClipboardFormatListener (USER32.@)
1158  */
1159 BOOL WINAPI RemoveClipboardFormatListener(HWND hwnd)
1160 {
1161     BOOL ret;
1162
1163     SERVER_START_REQ( remove_clipboard_listener )
1164     {
1165         req->window = wine_server_user_handle( hwnd );
1166         ret = !wine_server_call_err( req );
1167     }
1168     SERVER_END_REQ;
1169     return ret;
1170 }