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gdiplus: GdipGetStringFormatTabStopCount implementation with tests.
[wine/multimedia.git] / dlls / user32 / dde_misc.c
blobd99cdcf746f352f4eb8c85399fe8f77262aaf5e4
1 /*
2 * DDEML library
3 *
4 * Copyright 1997 Alexandre Julliard
5 * Copyright 1997 Len White
6 * Copyright 1999 Keith Matthews
7 * Copyright 2000 Corel
8 * Copyright 2001 Eric Pouech
9 * Copyright 2003, 2004, 2005 Dmitry Timoshkov
10 *
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; either
14 * version 2.1 of the License, or (at your option) any later version.
15 *
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with this library; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
24 */
25
26 #include "config.h"
27 #include "wine/port.h"
28
29 #include <string.h>
30 #include <stdarg.h>
31 #include <stdio.h>
32 #include "windef.h"
33 #include "winbase.h"
34 #include "wingdi.h"
35 #include "winuser.h"
36 #include "dde.h"
37 #include "ddeml.h"
38 #include "win.h"
39 #include "dde_private.h"
40 #include "wine/unicode.h"
41 #include "wine/debug.h"
42
43 WINE_DEFAULT_DEBUG_CHANNEL(ddeml);
44
45 /* convert between ATOM and HSZ avoiding compiler warnings */
46 #define ATOM2HSZ(atom) ((HSZ) (ULONG_PTR)(atom))
47 #define HSZ2ATOM(hsz) ((ATOM) (ULONG_PTR)(hsz))
48
49 static WDML_INSTANCE* WDML_InstanceList = NULL;
50 static LONG WDML_MaxInstanceID = 0; /* OK for present, have to worry about wrap-around later */
51 const WCHAR WDML_szEventClass[] = {'W','i','n','e','D','d','e','E','v','e','n','t','C','l','a','s','s',0};
52
53 /* protection for instance list */
54 static CRITICAL_SECTION WDML_CritSect;
55 static CRITICAL_SECTION_DEBUG critsect_debug =
56 {
57 0, 0, &WDML_CritSect,
58 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
59 0, 0, { (DWORD_PTR)(__FILE__ ": WDML_CritSect") }
60 };
61 static CRITICAL_SECTION WDML_CritSect = { &critsect_debug, -1, 0, 0, 0, 0 };
62
63 /* ================================================================
64 *
65 * Pure DDE (non DDEML) management
66 *
67 * ================================================================ */
68
69
70 /*****************************************************************
71 * PackDDElParam (USER32.@)
72 *
73 * RETURNS
74 * the packed lParam
75 */
76 LPARAM WINAPI PackDDElParam(UINT msg, UINT_PTR uiLo, UINT_PTR uiHi)
77 {
78 HGLOBAL hMem;
79 UINT_PTR *params;
80
81 switch (msg)
82 {
83 case WM_DDE_ACK:
84 case WM_DDE_ADVISE:
85 case WM_DDE_DATA:
86 case WM_DDE_POKE:
87 if (!(hMem = GlobalAlloc(GMEM_DDESHARE, sizeof(UINT_PTR) * 2)))
88 {
89 ERR("GlobalAlloc failed\n");
90 return 0;
91 }
92 if (!(params = GlobalLock(hMem)))
93 {
94 ERR("GlobalLock failed (%p)\n", hMem);
95 return 0;
96 }
97 params[0] = uiLo;
98 params[1] = uiHi;
99 GlobalUnlock(hMem);
100 return (LPARAM)hMem;
101
102 case WM_DDE_EXECUTE:
103 return uiHi;
104
105 default:
106 return MAKELPARAM(uiLo, uiHi);
107 }
108 }
109
110
111 /*****************************************************************
112 * UnpackDDElParam (USER32.@)
113 *
114 * RETURNS
115 * success: nonzero
116 * failure: zero
117 */
118 BOOL WINAPI UnpackDDElParam(UINT msg, LPARAM lParam,
119 PUINT_PTR uiLo, PUINT_PTR uiHi)
120 {
121 UINT_PTR *params;
122
123 switch (msg)
124 {
125 case WM_DDE_ACK:
126 case WM_DDE_ADVISE:
127 case WM_DDE_DATA:
128 case WM_DDE_POKE:
129 if (!lParam || !(params = GlobalLock((HGLOBAL)lParam)))
130 {
131 if (uiLo) *uiLo = 0;
132 if (uiHi) *uiHi = 0;
133 return FALSE;
134 }
135 if (uiLo) *uiLo = params[0];
136 if (uiHi) *uiHi = params[1];
137 GlobalUnlock( (HGLOBAL)lParam );
138 return TRUE;
139
140 case WM_DDE_EXECUTE:
141 if (uiLo) *uiLo = 0;
142 if (uiHi) *uiHi = lParam;
143 return TRUE;
144
145 default:
146 if (uiLo) *uiLo = LOWORD(lParam);
147 if (uiHi) *uiHi = HIWORD(lParam);
148 return TRUE;
149 }
150 }
151
152
153 /*****************************************************************
154 * FreeDDElParam (USER32.@)
155 *
156 * RETURNS
157 * success: nonzero
158 * failure: zero
159 */
160 BOOL WINAPI FreeDDElParam(UINT msg, LPARAM lParam)
161 {
162 switch (msg)
163 {
164 case WM_DDE_ACK:
165 case WM_DDE_ADVISE:
166 case WM_DDE_DATA:
167 case WM_DDE_POKE:
168 /* first check if it's a global handle */
169 if (!GlobalHandle( (LPVOID)lParam )) return TRUE;
170 return !GlobalFree( (HGLOBAL)lParam );
171
172 default:
173 return TRUE;
174 }
175 }
176
177
178 /*****************************************************************
179 * ReuseDDElParam (USER32.@)
180 *
181 * RETURNS
182 * the packed lParam
183 */
184 LPARAM WINAPI ReuseDDElParam(LPARAM lParam, UINT msgIn, UINT msgOut,
185 UINT_PTR uiLo, UINT_PTR uiHi)
186 {
187 UINT_PTR *params;
188
189 switch (msgIn)
190 {
191 case WM_DDE_ACK:
192 case WM_DDE_ADVISE:
193 case WM_DDE_DATA:
194 case WM_DDE_POKE:
195 switch(msgOut)
196 {
197 case WM_DDE_ACK:
198 case WM_DDE_ADVISE:
199 case WM_DDE_DATA:
200 case WM_DDE_POKE:
201 if (!lParam) return 0;
202 if (!(params = GlobalLock( (HGLOBAL)lParam )))
203 {
204 ERR("GlobalLock failed\n");
205 return 0;
206 }
207 params[0] = uiLo;
208 params[1] = uiHi;
209 TRACE("Reusing pack %08lx %08lx\n", uiLo, uiHi);
210 GlobalUnlock( (HGLOBAL)lParam );
211 return lParam;
212
213 case WM_DDE_EXECUTE:
214 FreeDDElParam( msgIn, lParam );
215 return uiHi;
216
217 default:
218 FreeDDElParam( msgIn, lParam );
219 return MAKELPARAM(uiLo, uiHi);
220 }
221
222 default:
223 return PackDDElParam( msgOut, uiLo, uiHi );
224 }
225 }
226
227 /*****************************************************************
228 * ImpersonateDdeClientWindow (USER32.@)
229 *
230 * PARAMS
231 * hWndClient [I] handle to DDE client window
232 * hWndServer [I] handle to DDE server window
233 */
234 BOOL WINAPI ImpersonateDdeClientWindow(HWND hWndClient, HWND hWndServer)
235 {
236 FIXME("(%p %p): stub\n", hWndClient, hWndServer);
237 return FALSE;
238 }
239
240 /*****************************************************************
241 * DdeSetQualityOfService (USER32.@)
242 */
243
244 BOOL WINAPI DdeSetQualityOfService(HWND hwndClient, CONST SECURITY_QUALITY_OF_SERVICE *pqosNew,
245 PSECURITY_QUALITY_OF_SERVICE pqosPrev)
246 {
247 FIXME("(%p %p %p): stub\n", hwndClient, pqosNew, pqosPrev);
248 return TRUE;
249 }
250
251 /* ================================================================
252 *
253 * Instance management
254 *
255 * ================================================================ */
256
257 /******************************************************************************
258 * IncrementInstanceId
259 *
260 * generic routine to increment the max instance Id and allocate a new application instance
261 */
262 static void WDML_IncrementInstanceId(WDML_INSTANCE* pInstance)
263 {
264 DWORD id = InterlockedIncrement(&WDML_MaxInstanceID);
265
266 pInstance->instanceID = id;
267 TRACE("New instance id %d allocated\n", id);
268 }
269
270 /******************************************************************
271 * WDML_EventProc
272 *
273 *
274 */
275 static LRESULT CALLBACK WDML_EventProc(HWND hwndEvent, UINT uMsg, WPARAM wParam, LPARAM lParam)
276 {
277 WDML_INSTANCE* pInstance;
278 HSZ hsz1, hsz2;
279
280 switch (uMsg)
281 {
282 case WM_WDML_REGISTER:
283 pInstance = WDML_GetInstanceFromWnd(hwndEvent);
284 /* try calling the Callback */
285 if (pInstance && !(pInstance->CBFflags & CBF_SKIP_REGISTRATIONS))
286 {
287 hsz1 = WDML_MakeHszFromAtom(pInstance, wParam);
288 hsz2 = WDML_MakeHszFromAtom(pInstance, lParam);
289 WDML_InvokeCallback(pInstance, XTYP_REGISTER, 0, 0, hsz1, hsz2, 0, 0, 0);
290 WDML_DecHSZ(pInstance, hsz1);
291 WDML_DecHSZ(pInstance, hsz2);
292 }
293 break;
294
295 case WM_WDML_UNREGISTER:
296 pInstance = WDML_GetInstanceFromWnd(hwndEvent);
297 if (pInstance && !(pInstance->CBFflags & CBF_SKIP_UNREGISTRATIONS))
298 {
299 hsz1 = WDML_MakeHszFromAtom(pInstance, wParam);
300 hsz2 = WDML_MakeHszFromAtom(pInstance, lParam);
301 WDML_InvokeCallback(pInstance, XTYP_UNREGISTER, 0, 0, hsz1, hsz2, 0, 0, 0);
302 WDML_DecHSZ(pInstance, hsz1);
303 WDML_DecHSZ(pInstance, hsz2);
304 }
305 break;
306
307 case WM_WDML_CONNECT_CONFIRM:
308 pInstance = WDML_GetInstanceFromWnd(hwndEvent);
309 if (pInstance && !(pInstance->CBFflags & CBF_SKIP_CONNECT_CONFIRMS))
310 {
311 WDML_CONV* pConv;
312 /* confirm connection...
313 * lookup for this conv handle
314 */
315 HWND client = WIN_GetFullHandle( (HWND)wParam );
316 HWND server = WIN_GetFullHandle( (HWND)lParam );
317 for (pConv = pInstance->convs[WDML_SERVER_SIDE]; pConv != NULL; pConv = pConv->next)
318 {
319 if (pConv->hwndClient == client && pConv->hwndServer == server)
320 break;
321 }
322 if (pConv)
323 {
324 pConv->wStatus |= ST_ISLOCAL;
325
326 WDML_InvokeCallback(pInstance, XTYP_CONNECT_CONFIRM, 0, (HCONV)pConv,
327 pConv->hszTopic, pConv->hszService, 0, 0,
328 (pConv->wStatus & ST_ISSELF) ? 1 : 0);
329 }
330 }
331 break;
332 default:
333 return DefWindowProcW(hwndEvent, uMsg, wParam, lParam);
334 }
335 return 0;
336 }
337
338 /******************************************************************
339 * WDML_Initialize
340 *
341 *
342 */
343 UINT WDML_Initialize(LPDWORD pidInst, PFNCALLBACK pfnCallback,
344 DWORD afCmd, DWORD ulRes, BOOL bUnicode, BOOL b16)
345 {
346 WDML_INSTANCE* pInstance;
347 WDML_INSTANCE* reference_inst;
348 UINT ret;
349 WNDCLASSEXW wndclass;
350
351 TRACE("(%p,%p,0x%x,%d)\n",
352 pidInst, pfnCallback, afCmd, ulRes);
353
354 if (ulRes)
355 {
356 ERR("Reserved value not zero? What does this mean?\n");
357 /* trap this and no more until we know more */
358 return DMLERR_NO_ERROR;
359 }
360
361 /* grab enough heap for one control struct - not really necessary for re-initialise
362 * but allows us to use same validation routines */
363 pInstance = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_INSTANCE));
364 if (pInstance == NULL)
365 {
366 /* catastrophe !! warn user & abort */
367 ERR("Instance create failed - out of memory\n");
368 return DMLERR_SYS_ERROR;
369 }
370 pInstance->next = NULL;
371 pInstance->monitor = (afCmd | APPCLASS_MONITOR);
372
373 /* messy bit, spec implies that 'Client Only' can be set in 2 different ways, catch 1 here */
374
375 pInstance->clientOnly = afCmd & APPCMD_CLIENTONLY;
376 pInstance->instanceID = *pidInst; /* May need to add calling proc Id */
377 pInstance->threadID = GetCurrentThreadId();
378 pInstance->callback = *pfnCallback;
379 pInstance->unicode = bUnicode;
380 pInstance->win16 = b16;
381 pInstance->nodeList = NULL; /* node will be added later */
382 pInstance->monitorFlags = afCmd & MF_MASK;
383 pInstance->wStatus = 0;
384 pInstance->servers = NULL;
385 pInstance->convs[0] = NULL;
386 pInstance->convs[1] = NULL;
387 pInstance->links[0] = NULL;
388 pInstance->links[1] = NULL;
389
390 /* isolate CBF flags in one go, expect this will go the way of all attempts to be clever !! */
391
392 pInstance->CBFflags = afCmd^((afCmd&MF_MASK)|((afCmd&APPCMD_MASK)|(afCmd&APPCLASS_MASK)));
393
394 if (!pInstance->clientOnly)
395 {
396 /* Check for other way of setting Client-only !! */
397 pInstance->clientOnly =
398 (pInstance->CBFflags & CBF_FAIL_ALLSVRXACTIONS) == CBF_FAIL_ALLSVRXACTIONS;
399 }
400
401 TRACE("instance created - checking validity\n");
402
403 if (*pidInst == 0)
404 {
405 /* Initialisation of new Instance Identifier */
406 TRACE("new instance, callback %p flags %X\n",pfnCallback,afCmd);
407
408 EnterCriticalSection(&WDML_CritSect);
409
410 if (WDML_InstanceList == NULL)
411 {
412 /* can't be another instance in this case, assign to the base pointer */
413 WDML_InstanceList = pInstance;
414
415 /* since first must force filter of XTYP_CONNECT and XTYP_WILDCONNECT for
416 * present
417 * ------------------------------- NOTE NOTE NOTE --------------------------
418 *
419 * the manual is not clear if this condition
420 * applies to the first call to DdeInitialize from an application, or the
421 * first call for a given callback !!!
422 */
423
424 pInstance->CBFflags = pInstance->CBFflags|APPCMD_FILTERINITS;
425 TRACE("First application instance detected OK\n");
426 /* allocate new instance ID */
427 WDML_IncrementInstanceId(pInstance);
428 }
429 else
430 {
431 /* really need to chain the new one in to the latest here, but after checking conditions
432 * such as trying to start a conversation from an application trying to monitor */
433 reference_inst = WDML_InstanceList;
434 TRACE("Subsequent application instance - starting checks\n");
435 while (reference_inst->next != NULL)
436 {
437 /*
438 * This set of tests will work if application uses same instance Id
439 * at application level once allocated - which is what manual implies
440 * should happen. If someone tries to be
441 * clever (lazy ?) it will fail to pick up that later calls are for
442 * the same application - should we trust them ?
443 */
444 if (pInstance->instanceID == reference_inst->instanceID)
445 {
446 /* Check 1 - must be same Client-only state */
447
448 if (pInstance->clientOnly != reference_inst->clientOnly)
449 {
450 ret = DMLERR_DLL_USAGE;
451 goto theError;
452 }
453
454 /* Check 2 - cannot use 'Monitor' with any non-monitor modes */
455
456 if (pInstance->monitor != reference_inst->monitor)
457 {
458 ret = DMLERR_INVALIDPARAMETER;
459 goto theError;
460 }
461
462 /* Check 3 - must supply different callback address */
463
464 if (pInstance->callback == reference_inst->callback)
465 {
466 ret = DMLERR_DLL_USAGE;
467 goto theError;
468 }
469 }
470 reference_inst = reference_inst->next;
471 }
472 /* All cleared, add to chain */
473
474 TRACE("Application Instance checks finished\n");
475 WDML_IncrementInstanceId(pInstance);
476 reference_inst->next = pInstance;
477 }
478 LeaveCriticalSection(&WDML_CritSect);
479
480 *pidInst = pInstance->instanceID;
481
482 /* for deadlock issues, windows must always be created when outside the critical section */
483 wndclass.cbSize = sizeof(wndclass);
484 wndclass.style = 0;
485 wndclass.lpfnWndProc = WDML_EventProc;
486 wndclass.cbClsExtra = 0;
487 wndclass.cbWndExtra = sizeof(ULONG_PTR);
488 wndclass.hInstance = 0;
489 wndclass.hIcon = 0;
490 wndclass.hCursor = 0;
491 wndclass.hbrBackground = 0;
492 wndclass.lpszMenuName = NULL;
493 wndclass.lpszClassName = WDML_szEventClass;
494 wndclass.hIconSm = 0;
495
496 RegisterClassExW(&wndclass);
497
498 pInstance->hwndEvent = CreateWindowW(WDML_szEventClass, NULL,
499 WS_POPUP, 0, 0, 0, 0,
500 0, 0, 0, 0);
501
502 SetWindowLongPtrW(pInstance->hwndEvent, GWL_WDML_INSTANCE, (ULONG_PTR)pInstance);
503
504 TRACE("New application instance processing finished OK\n");
505 }
506 else
507 {
508 /* Reinitialisation situation --- FIX */
509 TRACE("reinitialisation of (%p,%p,0x%x,%d): stub\n", pidInst, pfnCallback, afCmd, ulRes);
510
511 EnterCriticalSection(&WDML_CritSect);
512
513 if (WDML_InstanceList == NULL)
514 {
515 ret = DMLERR_INVALIDPARAMETER;
516 goto theError;
517 }
518 /* can't reinitialise if we have initialised nothing !! */
519 reference_inst = WDML_InstanceList;
520 /* must first check if we have been given a valid instance to re-initialise !! how do we do that ? */
521 /*
522 * MS allows initialisation without specifying a callback, should we allow addition of the
523 * callback by a later call to initialise ? - if so this lot will have to change
524 */
525 while (reference_inst->next != NULL)
526 {
527 if (*pidInst == reference_inst->instanceID && pfnCallback == reference_inst->callback)
528 {
529 /* Check 1 - cannot change client-only mode if set via APPCMD_CLIENTONLY */
530
531 if (reference_inst->clientOnly)
532 {
533 if ((reference_inst->CBFflags & CBF_FAIL_ALLSVRXACTIONS) != CBF_FAIL_ALLSVRXACTIONS)
534 {
535 /* i.e. Was set to Client-only and through APPCMD_CLIENTONLY */
536
537 if (!(afCmd & APPCMD_CLIENTONLY))
538 {
539 ret = DMLERR_INVALIDPARAMETER;
540 goto theError;
541 }
542 }
543 }
544 /* Check 2 - cannot change monitor modes */
545
546 if (pInstance->monitor != reference_inst->monitor)
547 {
548 ret = DMLERR_INVALIDPARAMETER;
549 goto theError;
550 }
551
552 /* Check 3 - trying to set Client-only via APPCMD when not set so previously */
553
554 if ((afCmd&APPCMD_CLIENTONLY) && !reference_inst->clientOnly)
555 {
556 ret = DMLERR_INVALIDPARAMETER;
557 goto theError;
558 }
559 break;
560 }
561 reference_inst = reference_inst->next;
562 }
563 if (reference_inst->next == NULL)
564 {
565 ret = DMLERR_INVALIDPARAMETER;
566 goto theError;
567 }
568 /* All checked - change relevant flags */
569
570 reference_inst->CBFflags = pInstance->CBFflags;
571 reference_inst->clientOnly = pInstance->clientOnly;
572 reference_inst->monitorFlags = pInstance->monitorFlags;
573
574 HeapFree(GetProcessHeap(), 0, pInstance); /* finished - release heap space used as work store */
575
576 LeaveCriticalSection(&WDML_CritSect);
577 }
578
579 return DMLERR_NO_ERROR;
580 theError:
581 HeapFree(GetProcessHeap(), 0, pInstance);
582 LeaveCriticalSection(&WDML_CritSect);
583 return ret;
584 }
585
586 /******************************************************************************
587 * DdeInitializeA (USER32.@)
588 *
589 * See DdeInitializeW.
590 */
591 UINT WINAPI DdeInitializeA(LPDWORD pidInst, PFNCALLBACK pfnCallback,
592 DWORD afCmd, DWORD ulRes)
593 {
594 return WDML_Initialize(pidInst, pfnCallback, afCmd, ulRes, FALSE, FALSE);
595 }
596
597 /******************************************************************************
598 * DdeInitializeW [USER32.@]
599 * Registers an application with the DDEML
600 *
601 * PARAMS
602 * pidInst [I] Pointer to instance identifier
603 * pfnCallback [I] Pointer to callback function
604 * afCmd [I] Set of command and filter flags
605 * ulRes [I] Reserved
606 *
607 * RETURNS
608 * Success: DMLERR_NO_ERROR
609 * Failure: DMLERR_DLL_USAGE, DMLERR_INVALIDPARAMETER, DMLERR_SYS_ERROR
610 */
611 UINT WINAPI DdeInitializeW(LPDWORD pidInst, PFNCALLBACK pfnCallback,
612 DWORD afCmd, DWORD ulRes)
613 {
614 return WDML_Initialize(pidInst, pfnCallback, afCmd, ulRes, TRUE, FALSE);
615 }
616
617 /*****************************************************************
618 * DdeUninitialize [USER32.@] Frees DDEML resources
619 *
620 * PARAMS
621 * idInst [I] Instance identifier
622 *
623 * RETURNS
624 * Success: TRUE
625 * Failure: FALSE
626 */
627
628 BOOL WINAPI DdeUninitialize(DWORD idInst)
629 {
630 /* Stage one - check if we have a handle for this instance
631 */
632 WDML_INSTANCE* pInstance;
633 WDML_CONV* pConv;
634 WDML_CONV* pConvNext;
635
636 TRACE("(%d)\n", idInst);
637
638 /* First check instance
639 */
640 pInstance = WDML_GetInstance(idInst);
641 if (pInstance == NULL)
642 {
643 /*
644 * Needs something here to record NOT_INITIALIZED ready for DdeGetLastError
645 */
646 return FALSE;
647 }
648
649 /* first terminate all conversations client side
650 * this shall close existing links...
651 */
652 for (pConv = pInstance->convs[WDML_CLIENT_SIDE]; pConv != NULL; pConv = pConvNext)
653 {
654 pConvNext = pConv->next;
655 DdeDisconnect((HCONV)pConv);
656 }
657 if (pInstance->convs[WDML_CLIENT_SIDE])
658 FIXME("still pending conversations\n");
659
660 /* then unregister all known service names */
661 DdeNameService(idInst, 0, 0, DNS_UNREGISTER);
662
663 /* Free the nodes that were not freed by this instance
664 * and remove the nodes from the list of HSZ nodes.
665 */
666 WDML_FreeAllHSZ(pInstance);
667
668 DestroyWindow(pInstance->hwndEvent);
669
670 /* OK now delete the instance handle itself */
671
672 if (WDML_InstanceList == pInstance)
673 {
674 /* special case - the first/only entry */
675 WDML_InstanceList = pInstance->next;
676 }
677 else
678 {
679 /* general case, remove entry */
680 WDML_INSTANCE* inst;
681
682 for (inst = WDML_InstanceList; inst->next != pInstance; inst = inst->next);
683 inst->next = pInstance->next;
684 }
685 /* release the heap entry
686 */
687 HeapFree(GetProcessHeap(), 0, pInstance);
688
689 return TRUE;
690 }
691
692 /******************************************************************
693 * WDML_NotifyThreadExit
694 *
695 *
696 */
697 void WDML_NotifyThreadDetach(void)
698 {
699 WDML_INSTANCE* pInstance;
700 WDML_INSTANCE* next;
701 DWORD tid = GetCurrentThreadId();
702
703 EnterCriticalSection(&WDML_CritSect);
704 for (pInstance = WDML_InstanceList; pInstance != NULL; pInstance = next)
705 {
706 next = pInstance->next;
707 if (pInstance->threadID == tid)
708 {
709 LeaveCriticalSection(&WDML_CritSect);
710 DdeUninitialize(pInstance->instanceID);
711 EnterCriticalSection(&WDML_CritSect);
712 }
713 }
714 LeaveCriticalSection(&WDML_CritSect);
715 }
716
717 /******************************************************************
718 * WDML_InvokeCallback
719 *
720 *
721 */
722 HDDEDATA WDML_InvokeCallback(WDML_INSTANCE* pInstance, UINT uType, UINT uFmt, HCONV hConv,
723 HSZ hsz1, HSZ hsz2, HDDEDATA hdata,
724 ULONG_PTR dwData1, ULONG_PTR dwData2)
725 {
726 HDDEDATA ret;
727
728 if (pInstance == NULL)
729 return NULL;
730
731 TRACE("invoking CB%d[%p] (%x %x %p %p %p %p %lx %lx)\n",
732 pInstance->win16 ? 16 : 32, pInstance->callback, uType, uFmt,
733 hConv, hsz1, hsz2, hdata, dwData1, dwData2);
734 if (pInstance->win16)
735 {
736 ret = WDML_InvokeCallback16(pInstance->callback, uType, uFmt, hConv,
737 hsz1, hsz2, hdata, dwData1, dwData2);
738 }
739 else
740 {
741 ret = pInstance->callback(uType, uFmt, hConv, hsz1, hsz2, hdata, dwData1, dwData2);
742 }
743 TRACE("done => %p\n", ret);
744 return ret;
745 }
746
747 /*****************************************************************************
748 * WDML_GetInstance
749 *
750 * generic routine to return a pointer to the relevant DDE_HANDLE_ENTRY
751 * for an instance Id, or NULL if the entry does not exist
752 *
753 */
754 WDML_INSTANCE* WDML_GetInstance(DWORD instId)
755 {
756 WDML_INSTANCE* pInstance;
757
758 EnterCriticalSection(&WDML_CritSect);
759
760 for (pInstance = WDML_InstanceList; pInstance != NULL; pInstance = pInstance->next)
761 {
762 if (pInstance->instanceID == instId)
763 {
764 if (GetCurrentThreadId() != pInstance->threadID)
765 {
766 FIXME("Tried to get instance from wrong thread\n");
767 continue;
768 }
769 break;
770 }
771 }
772
773 LeaveCriticalSection(&WDML_CritSect);
774
775 if (!pInstance)
776 WARN("Instance entry missing for id %04x\n", instId);
777 return pInstance;
778 }
779
780 /******************************************************************
781 * WDML_GetInstanceFromWnd
782 *
783 *
784 */
785 WDML_INSTANCE* WDML_GetInstanceFromWnd(HWND hWnd)
786 {
787 return (WDML_INSTANCE*)GetWindowLongPtrW(hWnd, GWL_WDML_INSTANCE);
788 }
789
790 /******************************************************************************
791 * DdeGetLastError [USER32.@] Gets most recent error code
792 *
793 * PARAMS
794 * idInst [I] Instance identifier
795 *
796 * RETURNS
797 * Last error code
798 */
799 UINT WINAPI DdeGetLastError(DWORD idInst)
800 {
801 DWORD error_code;
802 WDML_INSTANCE* pInstance;
803
804 /* First check instance
805 */
806 pInstance = WDML_GetInstance(idInst);
807 if (pInstance == NULL)
808 {
809 error_code = DMLERR_INVALIDPARAMETER;
810 }
811 else
812 {
813 error_code = pInstance->lastError;
814 pInstance->lastError = 0;
815 }
816
817 return error_code;
818 }
819
820 /* ================================================================
821 *
822 * String management
823 *
824 * ================================================================ */
825
826
827 /******************************************************************
828 * WDML_FindNode
829 *
830 *
831 */
832 static HSZNode* WDML_FindNode(WDML_INSTANCE* pInstance, HSZ hsz)
833 {
834 HSZNode* pNode;
835
836 if (pInstance == NULL) return NULL;
837
838 for (pNode = pInstance->nodeList; pNode != NULL; pNode = pNode->next)
839 {
840 if (pNode->hsz == hsz) break;
841 }
842 if (!pNode) WARN("HSZ %p not found\n", hsz);
843 return pNode;
844 }
845
846 /******************************************************************
847 * WDML_MakeAtomFromHsz
848 *
849 * Creates a global atom from an existing HSZ
850 * Generally used before sending an HSZ as an atom to a remote app
851 */
852 ATOM WDML_MakeAtomFromHsz(HSZ hsz)
853 {
854 WCHAR nameBuffer[MAX_BUFFER_LEN];
855
856 if (GetAtomNameW(HSZ2ATOM(hsz), nameBuffer, MAX_BUFFER_LEN))
857 return GlobalAddAtomW(nameBuffer);
858 WARN("HSZ %p not found\n", hsz);
859 return 0;
860 }
861
862 /******************************************************************
863 * WDML_MakeHszFromAtom
864 *
865 * Creates a HSZ from an existing global atom
866 * Generally used while receiving a global atom and transforming it
867 * into an HSZ
868 */
869 HSZ WDML_MakeHszFromAtom(const WDML_INSTANCE* pInstance, ATOM atom)
870 {
871 WCHAR nameBuffer[MAX_BUFFER_LEN];
872
873 if (!atom) return NULL;
874
875 if (GlobalGetAtomNameW(atom, nameBuffer, MAX_BUFFER_LEN))
876 {
877 TRACE("%x => %s\n", atom, debugstr_w(nameBuffer));
878 return DdeCreateStringHandleW(pInstance->instanceID, nameBuffer, CP_WINUNICODE);
879 }
880 WARN("ATOM 0x%x not found\n", atom);
881 return 0;
882 }
883
884 /******************************************************************
885 * WDML_IncHSZ
886 *
887 *
888 */
889 BOOL WDML_IncHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
890 {
891 HSZNode* pNode;
892
893 pNode = WDML_FindNode(pInstance, hsz);
894 if (!pNode) return FALSE;
895
896 pNode->refCount++;
897 return TRUE;
898 }
899
900 /******************************************************************************
901 * WDML_DecHSZ (INTERNAL)
902 *
903 * Decrease the ref count of an HSZ. If it reaches 0, the node is removed from the list
904 * of HSZ nodes
905 * Returns -1 is the HSZ isn't found, otherwise it's the current (after --) of the ref count
906 */
907 BOOL WDML_DecHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
908 {
909 HSZNode* pPrev = NULL;
910 HSZNode* pCurrent;
911
912 for (pCurrent = pInstance->nodeList; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
913 {
914 /* If we found the node we were looking for and its ref count is one,
915 * we can remove it
916 */
917 if (pCurrent->hsz == hsz)
918 {
919 if (--pCurrent->refCount == 0)
920 {
921 if (pCurrent == pInstance->nodeList)
922 {
923 pInstance->nodeList = pCurrent->next;
924 }
925 else
926 {
927 pPrev->next = pCurrent->next;
928 }
929 HeapFree(GetProcessHeap(), 0, pCurrent);
930 DeleteAtom(HSZ2ATOM(hsz));
931 }
932 return TRUE;
933 }
934 }
935 WARN("HSZ %p not found\n", hsz);
936
937 return FALSE;
938 }
939
940 /******************************************************************************
941 * WDML_FreeAllHSZ (INTERNAL)
942 *
943 * Frees up all the strings still allocated in the list and
944 * remove all the nodes from the list of HSZ nodes.
945 */
946 void WDML_FreeAllHSZ(WDML_INSTANCE* pInstance)
947 {
948 /* Free any strings created in this instance.
949 */
950 while (pInstance->nodeList != NULL)
951 {
952 DdeFreeStringHandle(pInstance->instanceID, pInstance->nodeList->hsz);
953 }
954 }
955
956 /******************************************************************************
957 * InsertHSZNode (INTERNAL)
958 *
959 * Insert a node to the head of the list.
960 */
961 static void WDML_InsertHSZNode(WDML_INSTANCE* pInstance, HSZ hsz)
962 {
963 if (hsz != 0)
964 {
965 HSZNode* pNew = NULL;
966 /* Create a new node for this HSZ.
967 */
968 pNew = HeapAlloc(GetProcessHeap(), 0, sizeof(HSZNode));
969 if (pNew != NULL)
970 {
971 pNew->hsz = hsz;
972 pNew->next = pInstance->nodeList;
973 pNew->refCount = 1;
974 pInstance->nodeList = pNew;
975 }
976 else
977 {
978 ERR("Primary HSZ Node allocation failed - out of memory\n");
979 }
980 }
981 }
982
983 /******************************************************************
984 * WDML_QueryString
985 *
986 *
987 */
988 static int WDML_QueryString(WDML_INSTANCE* pInstance, HSZ hsz, LPVOID ptr, DWORD cchMax,
989 int codepage)
990 {
991 WCHAR pString[MAX_BUFFER_LEN];
992 int ret;
993 /* If psz is null, we have to return only the length
994 * of the string.
995 */
996 if (ptr == NULL)
997 {
998 ptr = pString;
999 cchMax = MAX_BUFFER_LEN;
1000 }
1001
1002 switch (codepage)
1003 {
1004 case CP_WINANSI:
1005 ret = GetAtomNameA(HSZ2ATOM(hsz), ptr, cchMax);
1006 break;
1007 case CP_WINUNICODE:
1008 ret = GetAtomNameW(HSZ2ATOM(hsz), ptr, cchMax);
1009 break;
1010 default:
1011 ERR("Unknown code page %d\n", codepage);
1012 ret = 0;
1013 }
1014 return ret;
1015 }
1016
1017 /*****************************************************************
1018 * DdeQueryStringA [USER32.@]
1019 */
1020 DWORD WINAPI DdeQueryStringA(DWORD idInst, HSZ hsz, LPSTR psz, DWORD cchMax, INT iCodePage)
1021 {
1022 DWORD ret = 0;
1023 WDML_INSTANCE* pInstance;
1024
1025 TRACE("(%d, %p, %p, %d, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1026
1027 /* First check instance
1028 */
1029 pInstance = WDML_GetInstance(idInst);
1030 if (pInstance != NULL)
1031 {
1032 if (iCodePage == 0) iCodePage = CP_WINANSI;
1033 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1034 }
1035
1036 TRACE("returning %d (%s)\n", ret, debugstr_a(psz));
1037 return ret;
1038 }
1039
1040 /*****************************************************************
1041 * DdeQueryStringW [USER32.@]
1042 */
1043
1044 DWORD WINAPI DdeQueryStringW(DWORD idInst, HSZ hsz, LPWSTR psz, DWORD cchMax, INT iCodePage)
1045 {
1046 DWORD ret = 0;
1047 WDML_INSTANCE* pInstance;
1048
1049 TRACE("(%d, %p, %p, %d, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1050
1051 /* First check instance
1052 */
1053 pInstance = WDML_GetInstance(idInst);
1054 if (pInstance != NULL)
1055 {
1056 if (iCodePage == 0) iCodePage = CP_WINUNICODE;
1057 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1058 }
1059
1060 TRACE("returning %d (%s)\n", ret, debugstr_w(psz));
1061 return ret;
1062 }
1063
1064 /******************************************************************
1065 * DML_CreateString
1066 *
1067 *
1068 */
1069 static HSZ WDML_CreateString(WDML_INSTANCE* pInstance, LPCVOID ptr, int codepage)
1070 {
1071 HSZ hsz;
1072
1073 switch (codepage)
1074 {
1075 case CP_WINANSI:
1076 hsz = ATOM2HSZ(AddAtomA(ptr));
1077 TRACE("added atom %s with HSZ %p,\n", debugstr_a(ptr), hsz);
1078 break;
1079 case CP_WINUNICODE:
1080 hsz = ATOM2HSZ(AddAtomW(ptr));
1081 TRACE("added atom %s with HSZ %p,\n", debugstr_w(ptr), hsz);
1082 break;
1083 default:
1084 ERR("Unknown code page %d\n", codepage);
1085 return 0;
1086 }
1087 WDML_InsertHSZNode(pInstance, hsz);
1088 return hsz;
1089 }
1090
1091 /*****************************************************************
1092 * DdeCreateStringHandleA [USER32.@]
1093 *
1094 * See DdeCreateStringHandleW.
1095 */
1096 HSZ WINAPI DdeCreateStringHandleA(DWORD idInst, LPCSTR psz, INT codepage)
1097 {
1098 HSZ hsz = 0;
1099 WDML_INSTANCE* pInstance;
1100
1101 TRACE("(%d,%s,%d)\n", idInst, debugstr_a(psz), codepage);
1102
1103 pInstance = WDML_GetInstance(idInst);
1104 if (pInstance)
1105 {
1106 if (codepage == 0) codepage = CP_WINANSI;
1107 hsz = WDML_CreateString(pInstance, psz, codepage);
1108 }
1109
1110 return hsz;
1111 }
1112
1113
1114 /******************************************************************************
1115 * DdeCreateStringHandleW [USER32.@] Creates handle to identify string
1116 *
1117 * PARAMS
1118 * idInst [I] Instance identifier
1119 * psz [I] Pointer to string
1120 * codepage [I] Code page identifier
1121 * RETURNS
1122 * Success: String handle
1123 * Failure: 0
1124 */
1125 HSZ WINAPI DdeCreateStringHandleW(DWORD idInst, LPCWSTR psz, INT codepage)
1126 {
1127 WDML_INSTANCE* pInstance;
1128 HSZ hsz = 0;
1129
1130 pInstance = WDML_GetInstance(idInst);
1131 if (pInstance)
1132 {
1133 if (codepage == 0) codepage = CP_WINUNICODE;
1134 hsz = WDML_CreateString(pInstance, psz, codepage);
1135 }
1136
1137 return hsz;
1138 }
1139
1140 /*****************************************************************
1141 * DdeFreeStringHandle (USER32.@)
1142 * RETURNS
1143 * success: nonzero
1144 * fail: zero
1145 */
1146 BOOL WINAPI DdeFreeStringHandle(DWORD idInst, HSZ hsz)
1147 {
1148 WDML_INSTANCE* pInstance;
1149 BOOL ret = FALSE;
1150
1151 TRACE("(%d,%p):\n", idInst, hsz);
1152
1153 /* First check instance
1154 */
1155 pInstance = WDML_GetInstance(idInst);
1156 if (pInstance)
1157 ret = WDML_DecHSZ(pInstance, hsz);
1158
1159 return ret;
1160 }
1161
1162 /*****************************************************************
1163 * DdeKeepStringHandle (USER32.@)
1164 *
1165 * RETURNS
1166 * success: nonzero
1167 * fail: zero
1168 */
1169 BOOL WINAPI DdeKeepStringHandle(DWORD idInst, HSZ hsz)
1170 {
1171 WDML_INSTANCE* pInstance;
1172 BOOL ret = FALSE;
1173
1174 TRACE("(%d,%p):\n", idInst, hsz);
1175
1176 /* First check instance
1177 */
1178 pInstance = WDML_GetInstance(idInst);
1179 if (pInstance)
1180 ret = WDML_IncHSZ(pInstance, hsz);
1181
1182 return ret;
1183 }
1184
1185 /*****************************************************************
1186 * DdeCmpStringHandles (USER32.@)
1187 *
1188 * Compares the value of two string handles. This comparison is
1189 * not case sensitive.
1190 *
1191 * PARAMS
1192 * hsz1 [I] Handle to the first string
1193 * hsz2 [I] Handle to the second string
1194 *
1195 * RETURNS
1196 * -1 The value of hsz1 is zero or less than hsz2
1197 * 0 The values of hsz 1 and 2 are the same or both zero.
1198 * 1 The value of hsz2 is zero of less than hsz1
1199 */
1200 INT WINAPI DdeCmpStringHandles(HSZ hsz1, HSZ hsz2)
1201 {
1202 WCHAR psz1[MAX_BUFFER_LEN];
1203 WCHAR psz2[MAX_BUFFER_LEN];
1204 int ret = 0;
1205 int ret1, ret2;
1206
1207 ret1 = GetAtomNameW(HSZ2ATOM(hsz1), psz1, MAX_BUFFER_LEN);
1208 ret2 = GetAtomNameW(HSZ2ATOM(hsz2), psz2, MAX_BUFFER_LEN);
1209
1210 TRACE("(%p<%s> %p<%s>);\n", hsz1, debugstr_w(psz1), hsz2, debugstr_w(psz2));
1211
1212 /* Make sure we found both strings. */
1213 if (ret1 == 0 && ret2 == 0)
1214 {
1215 /* If both are not found, return both "zero strings". */
1216 ret = 0;
1217 }
1218 else if (ret1 == 0)
1219 {
1220 /* If hsz1 is a not found, return hsz1 is "zero string". */
1221 ret = -1;
1222 }
1223 else if (ret2 == 0)
1224 {
1225 /* If hsz2 is a not found, return hsz2 is "zero string". */
1226 ret = 1;
1227 }
1228 else
1229 {
1230 /* Compare the two strings we got (case insensitive). */
1231 ret = lstrcmpiW(psz1, psz2);
1232 /* Since strcmp returns any number smaller than
1233 * 0 when the first string is found to be less than
1234 * the second one we must make sure we are returning
1235 * the proper values.
1236 */
1237 if (ret < 0)
1238 {
1239 ret = -1;
1240 }
1241 else if (ret > 0)
1242 {
1243 ret = 1;
1244 }
1245 }
1246
1247 return ret;
1248 }
1249
1250 /* ================================================================
1251 *
1252 * Data handle management
1253 *
1254 * ================================================================ */
1255
1256 /*****************************************************************
1257 * DdeCreateDataHandle (USER32.@)
1258 */
1259 HDDEDATA WINAPI DdeCreateDataHandle(DWORD idInst, LPBYTE pSrc, DWORD cb, DWORD cbOff,
1260 HSZ hszItem, UINT wFmt, UINT afCmd)
1261 {
1262 /* For now, we ignore idInst, hszItem.
1263 * The purpose of these arguments still need to be investigated.
1264 */
1265
1266 HGLOBAL hMem;
1267 LPBYTE pByte;
1268 DDE_DATAHANDLE_HEAD* pDdh;
1269 WCHAR psz[MAX_BUFFER_LEN];
1270
1271 if (!GetAtomNameW(HSZ2ATOM(hszItem), psz, MAX_BUFFER_LEN))
1272 {
1273 psz[0] = HSZ2ATOM(hszItem);
1274 psz[1] = 0;
1275 }
1276
1277 TRACE("(%d,%p,cb %d, cbOff %d,%p <%s>,fmt %04x,%x)\n",
1278 idInst, pSrc, cb, cbOff, hszItem, debugstr_w(psz), wFmt, afCmd);
1279
1280 if (afCmd != 0 && afCmd != HDATA_APPOWNED)
1281 return 0;
1282
1283 /* we use the first 4 bytes to store the size */
1284 if (!(hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, cb + cbOff + sizeof(DDE_DATAHANDLE_HEAD))))
1285 {
1286 ERR("GlobalAlloc failed\n");
1287 return 0;
1288 }
1289
1290 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock(hMem);
1291 if (!pDdh)
1292 {
1293 GlobalFree(hMem);
1294 return 0;
1295 }
1296
1297 pDdh->cfFormat = wFmt;
1298 pDdh->bAppOwned = (afCmd == HDATA_APPOWNED);
1299
1300 pByte = (LPBYTE)(pDdh + 1);
1301 if (pSrc)
1302 {
1303 memcpy(pByte, pSrc + cbOff, cb);
1304 }
1305 GlobalUnlock(hMem);
1306
1307 TRACE("=> %p\n", hMem);
1308 return (HDDEDATA)hMem;
1309 }
1310
1311 /*****************************************************************
1312 *
1313 * DdeAddData (USER32.@)
1314 */
1315 HDDEDATA WINAPI DdeAddData(HDDEDATA hData, LPBYTE pSrc, DWORD cb, DWORD cbOff)
1316 {
1317 DWORD old_sz, new_sz;
1318 LPBYTE pDst;
1319
1320 TRACE("(%p,%p,cb %d, cbOff %d)\n", hData, pSrc, cb, cbOff);
1321
1322 pDst = DdeAccessData(hData, &old_sz);
1323 if (!pDst) return 0;
1324
1325 new_sz = cb + cbOff;
1326 if (new_sz > old_sz)
1327 {
1328 DdeUnaccessData(hData);
1329 hData = GlobalReAlloc(hData, new_sz + sizeof(DDE_DATAHANDLE_HEAD),
1330 GMEM_MOVEABLE | GMEM_DDESHARE);
1331 pDst = DdeAccessData(hData, &old_sz);
1332 }
1333
1334 if (!pDst) return 0;
1335
1336 memcpy(pDst + cbOff, pSrc, cb);
1337 DdeUnaccessData(hData);
1338 return hData;
1339 }
1340
1341 /******************************************************************************
1342 * DdeGetData [USER32.@] Copies data from DDE object to local buffer
1343 *
1344 *
1345 * PARAMS
1346 * hData [I] Handle to DDE object
1347 * pDst [I] Pointer to destination buffer
1348 * cbMax [I] Amount of data to copy
1349 * cbOff [I] Offset to beginning of data
1350 *
1351 * RETURNS
1352 * Size of memory object associated with handle
1353 */
1354 DWORD WINAPI DdeGetData(HDDEDATA hData, LPBYTE pDst, DWORD cbMax, DWORD cbOff)
1355 {
1356 DWORD dwSize, dwRet;
1357 LPBYTE pByte;
1358
1359 TRACE("(%p,%p,%d,%d)\n", hData, pDst, cbMax, cbOff);
1360
1361 pByte = DdeAccessData(hData, &dwSize);
1362
1363 if (pByte)
1364 {
1365 if (!pDst)
1366 {
1367 dwRet = dwSize;
1368 }
1369 else if (cbOff + cbMax < dwSize)
1370 {
1371 dwRet = cbMax;
1372 }
1373 else if (cbOff < dwSize)
1374 {
1375 dwRet = dwSize - cbOff;
1376 }
1377 else
1378 {
1379 dwRet = 0;
1380 }
1381 if (pDst && dwRet != 0)
1382 {
1383 memcpy(pDst, pByte + cbOff, dwRet);
1384 }
1385 DdeUnaccessData(hData);
1386 }
1387 else
1388 {
1389 dwRet = 0;
1390 }
1391 return dwRet;
1392 }
1393
1394 /*****************************************************************
1395 * DdeAccessData (USER32.@)
1396 */
1397 LPBYTE WINAPI DdeAccessData(HDDEDATA hData, LPDWORD pcbDataSize)
1398 {
1399 HGLOBAL hMem = hData;
1400 DDE_DATAHANDLE_HEAD* pDdh;
1401
1402 TRACE("(%p,%p)\n", hData, pcbDataSize);
1403
1404 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock(hMem);
1405 if (pDdh == NULL)
1406 {
1407 ERR("Failed on GlobalLock(%p)\n", hMem);
1408 return 0;
1409 }
1410
1411 if (pcbDataSize != NULL)
1412 {
1413 *pcbDataSize = GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD);
1414 }
1415 TRACE("=> %p (%lu) fmt %04x\n", pDdh + 1, GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD), pDdh->cfFormat);
1416 return (LPBYTE)(pDdh + 1);
1417 }
1418
1419 /*****************************************************************
1420 * DdeUnaccessData (USER32.@)
1421 */
1422 BOOL WINAPI DdeUnaccessData(HDDEDATA hData)
1423 {
1424 HGLOBAL hMem = hData;
1425
1426 TRACE("(%p)\n", hData);
1427
1428 GlobalUnlock(hMem);
1429
1430 return TRUE;
1431 }
1432
1433 /*****************************************************************
1434 * DdeFreeDataHandle (USER32.@)
1435 */
1436 BOOL WINAPI DdeFreeDataHandle(HDDEDATA hData)
1437 {
1438 TRACE("(%p)\n", hData);
1439 return GlobalFree(hData) == 0;
1440 }
1441
1442 /******************************************************************
1443 * WDML_IsAppOwned
1444 *
1445 *
1446 */
1447 BOOL WDML_IsAppOwned(HDDEDATA hData)
1448 {
1449 DDE_DATAHANDLE_HEAD* pDdh;
1450 BOOL ret = FALSE;
1451
1452 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock(hData);
1453 if (pDdh != NULL)
1454 {
1455 ret = pDdh->bAppOwned;
1456 GlobalUnlock(hData);
1457 }
1458 return ret;
1459 }
1460
1461 /* ================================================================
1462 *
1463 * Global <=> Data handle management
1464 *
1465 * ================================================================ */
1466
1467 /* Note: we use a DDEDATA, but layout of DDEDATA, DDEADVISE and DDEPOKE structures is similar:
1468 * offset size
1469 * (bytes) (bits) comment
1470 * 0 16 bit fields for options (release, ackreq, response...)
1471 * 2 16 clipboard format
1472 * 4 ? data to be used
1473 */
1474 HDDEDATA WDML_Global2DataHandle(HGLOBAL hMem, WINE_DDEHEAD* p)
1475 {
1476 DDEDATA* pDd;
1477 HDDEDATA ret = 0;
1478 DWORD size;
1479
1480 if (hMem)
1481 {
1482 pDd = GlobalLock(hMem);
1483 size = GlobalSize(hMem) - sizeof(WINE_DDEHEAD);
1484 if (pDd)
1485 {
1486 if (p) memcpy(p, pDd, sizeof(WINE_DDEHEAD));
1487 switch (pDd->cfFormat)
1488 {
1489 default:
1490 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1491 pDd->cfFormat, hMem);
1492 /* fall thru */
1493 case 0:
1494 case CF_TEXT:
1495 ret = DdeCreateDataHandle(0, pDd->Value, size, 0, 0, pDd->cfFormat, 0);
1496 break;
1497 case CF_BITMAP:
1498 if (size >= sizeof(BITMAP))
1499 {
1500 BITMAP* bmp = (BITMAP*)pDd->Value;
1501 int count = bmp->bmWidthBytes * bmp->bmHeight * bmp->bmPlanes;
1502 if (size >= sizeof(BITMAP) + count)
1503 {
1504 HBITMAP hbmp;
1505
1506 if ((hbmp = CreateBitmap(bmp->bmWidth, bmp->bmHeight,
1507 bmp->bmPlanes, bmp->bmBitsPixel,
1508 pDd->Value + sizeof(BITMAP))))
1509 {
1510 ret = DdeCreateDataHandle(0, (LPBYTE)&hbmp, sizeof(hbmp),
1511 0, 0, CF_BITMAP, 0);
1512 }
1513 else ERR("Can't create bmp\n");
1514 }
1515 else
1516 {
1517 ERR("Wrong count: %u / %d\n", size, count);
1518 }
1519 } else ERR("No bitmap header\n");
1520 break;
1521 }
1522 GlobalUnlock(hMem);
1523 }
1524 }
1525 return ret;
1526 }
1527
1528 /******************************************************************
1529 * WDML_DataHandle2Global
1530 *
1531 *
1532 */
1533 HGLOBAL WDML_DataHandle2Global(HDDEDATA hDdeData, BOOL fResponse, BOOL fRelease,
1534 BOOL fDeferUpd, BOOL fAckReq)
1535 {
1536 DDE_DATAHANDLE_HEAD* pDdh;
1537 DWORD dwSize;
1538 HGLOBAL hMem = 0;
1539
1540 dwSize = GlobalSize((HGLOBAL)hDdeData) - sizeof(DDE_DATAHANDLE_HEAD);
1541 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock((HGLOBAL)hDdeData);
1542 if (dwSize && pDdh)
1543 {
1544 WINE_DDEHEAD* wdh = NULL;
1545
1546 switch (pDdh->cfFormat)
1547 {
1548 default:
1549 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1550 pDdh->cfFormat, hDdeData);
1551 /* fall thru */
1552 case 0:
1553 case CF_TEXT:
1554 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, sizeof(WINE_DDEHEAD) + dwSize);
1555 if (hMem && (wdh = GlobalLock(hMem)))
1556 {
1557 memcpy(wdh + 1, pDdh + 1, dwSize);
1558 }
1559 break;
1560 case CF_BITMAP:
1561 if (dwSize >= sizeof(HBITMAP))
1562 {
1563 BITMAP bmp;
1564 DWORD count;
1565 HBITMAP hbmp = *(HBITMAP*)(pDdh + 1);
1566
1567 if (GetObjectW(hbmp, sizeof(bmp), &bmp))
1568 {
1569 count = bmp.bmWidthBytes * bmp.bmHeight;
1570 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE,
1571 sizeof(WINE_DDEHEAD) + sizeof(bmp) + count);
1572 if (hMem && (wdh = GlobalLock(hMem)))
1573 {
1574 memcpy(wdh + 1, &bmp, sizeof(bmp));
1575 GetBitmapBits(hbmp, count, ((char*)(wdh + 1)) + sizeof(bmp));
1576 }
1577 }
1578 }
1579 break;
1580 }
1581 if (wdh)
1582 {
1583 wdh->unused = 0;
1584 wdh->fResponse = fResponse;
1585 wdh->fRelease = fRelease;
1586 wdh->fDeferUpd = fDeferUpd;
1587 wdh->fAckReq = fAckReq;
1588 wdh->cfFormat = pDdh->cfFormat;
1589 GlobalUnlock(hMem);
1590 }
1591 GlobalUnlock((HGLOBAL)hDdeData);
1592 }
1593
1594 return hMem;
1595 }
1596
1597 /* ================================================================
1598 *
1599 * Server management
1600 *
1601 * ================================================================ */
1602
1603 /******************************************************************
1604 * WDML_AddServer
1605 *
1606 *
1607 */
1608 WDML_SERVER* WDML_AddServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1609 {
1610 static const WCHAR fmtW[] = {'%','s','(','0','x','%','0','8','l','x',')',0};
1611 WDML_SERVER* pServer;
1612 WCHAR buf1[256];
1613 WCHAR buf2[256];
1614
1615 pServer = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_SERVER));
1616 if (pServer == NULL) return NULL;
1617
1618 pServer->hszService = hszService;
1619 WDML_IncHSZ(pInstance, hszService);
1620
1621 DdeQueryStringW(pInstance->instanceID, hszService, buf1, 256, CP_WINUNICODE);
1622 snprintfW(buf2, 256, fmtW, buf1, GetCurrentProcessId());
1623 pServer->hszServiceSpec = DdeCreateStringHandleW(pInstance->instanceID, buf2, CP_WINUNICODE);
1624
1625 pServer->atomService = WDML_MakeAtomFromHsz(pServer->hszService);
1626 pServer->atomServiceSpec = WDML_MakeAtomFromHsz(pServer->hszServiceSpec);
1627
1628 pServer->filterOn = TRUE;
1629
1630 pServer->next = pInstance->servers;
1631 pInstance->servers = pServer;
1632 return pServer;
1633 }
1634
1635 /******************************************************************
1636 * WDML_RemoveServer
1637 *
1638 *
1639 */
1640 void WDML_RemoveServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1641 {
1642 WDML_SERVER* pPrev = NULL;
1643 WDML_SERVER* pServer = NULL;
1644 WDML_CONV* pConv;
1645 WDML_CONV* pConvNext;
1646
1647 pServer = pInstance->servers;
1648
1649 while (pServer != NULL)
1650 {
1651 if (DdeCmpStringHandles(pServer->hszService, hszService) == 0)
1652 {
1653 WDML_BroadcastDDEWindows(WDML_szEventClass, WM_WDML_UNREGISTER,
1654 pServer->atomService, pServer->atomServiceSpec);
1655 /* terminate all conversations for given topic */
1656 for (pConv = pInstance->convs[WDML_SERVER_SIDE]; pConv != NULL; pConv = pConvNext)
1657 {
1658 pConvNext = pConv->next;
1659 if (DdeCmpStringHandles(pConv->hszService, hszService) == 0)
1660 {
1661 HWND client = pConv->hwndClient, server = pConv->hwndServer;
1662 WDML_RemoveConv(pConv, WDML_SERVER_SIDE);
1663 /* don't care about return code (whether client window is present or not) */
1664 PostMessageW(client, WM_DDE_TERMINATE, (WPARAM)server, 0);
1665 }
1666 }
1667 if (pServer == pInstance->servers)
1668 {
1669 pInstance->servers = pServer->next;
1670 }
1671 else
1672 {
1673 pPrev->next = pServer->next;
1674 }
1675
1676 DestroyWindow(pServer->hwndServer);
1677 WDML_DecHSZ(pInstance, pServer->hszServiceSpec);
1678 WDML_DecHSZ(pInstance, pServer->hszService);
1679
1680 GlobalDeleteAtom(pServer->atomService);
1681 GlobalDeleteAtom(pServer->atomServiceSpec);
1682
1683 HeapFree(GetProcessHeap(), 0, pServer);
1684 break;
1685 }
1686
1687 pPrev = pServer;
1688 pServer = pServer->next;
1689 }
1690 }
1691
1692 /*****************************************************************************
1693 * WDML_FindServer
1694 *
1695 * generic routine to return a pointer to the relevant ServiceNode
1696 * for a given service name, or NULL if the entry does not exist
1697 *
1698 */
1699 WDML_SERVER* WDML_FindServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1700 {
1701 WDML_SERVER* pServer;
1702
1703 for (pServer = pInstance->servers; pServer != NULL; pServer = pServer->next)
1704 {
1705 if (hszService == pServer->hszService)
1706 {
1707 return pServer;
1708 }
1709 }
1710 TRACE("Service name missing\n");
1711 return NULL;
1712 }
1713
1714 /* ================================================================
1715 *
1716 * Conversation management
1717 *
1718 * ================================================================ */
1719
1720 /******************************************************************
1721 * WDML_AddConv
1722 *
1723 *
1724 */
1725 WDML_CONV* WDML_AddConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1726 HSZ hszService, HSZ hszTopic, HWND hwndClient, HWND hwndServer)
1727 {
1728 WDML_CONV* pConv;
1729
1730 /* no conversation yet, add it */
1731 pConv = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_CONV));
1732 if (!pConv) return NULL;
1733
1734 pConv->instance = pInstance;
1735 WDML_IncHSZ(pInstance, pConv->hszService = hszService);
1736 WDML_IncHSZ(pInstance, pConv->hszTopic = hszTopic);
1737 pConv->magic = WDML_CONV_MAGIC;
1738 pConv->hwndServer = hwndServer;
1739 pConv->hwndClient = hwndClient;
1740 pConv->transactions = NULL;
1741 pConv->hUser = 0;
1742 pConv->wStatus = (side == WDML_CLIENT_SIDE) ? ST_CLIENT : 0L;
1743 pConv->wStatus |= pInstance->wStatus;
1744 /* check if both side of the conversation are of the same instance */
1745 if (GetWindowThreadProcessId(hwndClient, NULL) == GetWindowThreadProcessId(hwndServer, NULL) &&
1746 WDML_GetInstanceFromWnd(hwndClient) == WDML_GetInstanceFromWnd(hwndServer))
1747 {
1748 pConv->wStatus |= ST_ISSELF;
1749 }
1750 pConv->wConvst = XST_NULL;
1751
1752 pConv->next = pInstance->convs[side];
1753 pInstance->convs[side] = pConv;
1754
1755 TRACE("pConv->wStatus %04x\n", pConv->wStatus);
1756
1757 return pConv;
1758 }
1759
1760 /******************************************************************
1761 * WDML_FindConv
1762 *
1763 *
1764 */
1765 WDML_CONV* WDML_FindConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1766 HSZ hszService, HSZ hszTopic)
1767 {
1768 WDML_CONV* pCurrent = NULL;
1769
1770 for (pCurrent = pInstance->convs[side]; pCurrent != NULL; pCurrent = pCurrent->next)
1771 {
1772 if (DdeCmpStringHandles(pCurrent->hszService, hszService) == 0 &&
1773 DdeCmpStringHandles(pCurrent->hszTopic, hszTopic) == 0)
1774 {
1775 return pCurrent;
1776 }
1777
1778 }
1779 return NULL;
1780 }
1781
1782 /******************************************************************
1783 * WDML_RemoveConv
1784 *
1785 *
1786 */
1787 void WDML_RemoveConv(WDML_CONV* pRef, WDML_SIDE side)
1788 {
1789 WDML_CONV* pPrev = NULL;
1790 WDML_CONV* pCurrent;
1791 WDML_XACT* pXAct;
1792 WDML_XACT* pXActNext;
1793 HWND hWnd;
1794
1795 if (!pRef)
1796 return;
1797
1798 /* remove any pending transaction */
1799 for (pXAct = pRef->transactions; pXAct != NULL; pXAct = pXActNext)
1800 {
1801 pXActNext = pXAct->next;
1802 WDML_FreeTransaction(pRef->instance, pXAct, TRUE);
1803 }
1804
1805 WDML_RemoveAllLinks(pRef->instance, pRef, side);
1806
1807 /* FIXME: should we keep the window around ? it seems so (at least on client side
1808 * to let QueryConvInfo work after conv termination, but also to implement
1809 * DdeReconnect...
1810 */
1811 /* destroy conversation window, but first remove pConv from hWnd.
1812 * this would help the wndProc do appropriate handling upon a WM_DESTROY message
1813 */
1814 hWnd = (side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer;
1815 SetWindowLongPtrW(hWnd, GWL_WDML_CONVERSATION, 0);
1816
1817 DestroyWindow((side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer);
1818
1819 WDML_DecHSZ(pRef->instance, pRef->hszService);
1820 WDML_DecHSZ(pRef->instance, pRef->hszTopic);
1821
1822 for (pCurrent = pRef->instance->convs[side]; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
1823 {
1824 if (pCurrent == pRef)
1825 {
1826 if (pCurrent == pRef->instance->convs[side])
1827 {
1828 pRef->instance->convs[side] = pCurrent->next;
1829 }
1830 else
1831 {
1832 pPrev->next = pCurrent->next;
1833 }
1834 pCurrent->magic = 0;
1835 HeapFree(GetProcessHeap(), 0, pCurrent);
1836 break;
1837 }
1838 }
1839 }
1840
1841 /******************************************************************
1842 * WDML_EnableCallback
1843 */
1844 static BOOL WDML_EnableCallback(WDML_CONV *pConv, UINT wCmd)
1845 {
1846 if (wCmd == EC_DISABLE)
1847 {
1848 pConv->wStatus |= ST_BLOCKED;
1849 TRACE("EC_DISABLE: conv %p status flags %04x\n", pConv, pConv->wStatus);
1850 return TRUE;
1851 }
1852
1853 if (wCmd == EC_QUERYWAITING)
1854 return pConv->transactions ? TRUE : FALSE;
1855
1856 if (wCmd != EC_ENABLEALL && wCmd != EC_ENABLEONE)
1857 {
1858 FIXME("Unknown command code %04x\n", wCmd);
1859 return FALSE;
1860 }
1861
1862 if (wCmd == EC_ENABLEALL)
1863 {
1864 pConv->wStatus &= ~ST_BLOCKED;
1865 TRACE("EC_ENABLEALL: conv %p status flags %04x\n", pConv, pConv->wStatus);
1866 }
1867
1868 while (pConv->transactions)
1869 {
1870 WDML_XACT *pXAct = pConv->transactions;
1871
1872 if (pConv->wStatus & ST_CLIENT)
1873 {
1874 /* transaction should be in the queue until handled */
1875 WDML_ClientHandle(pConv, pXAct, 0, NULL);
1876 WDML_UnQueueTransaction(pConv, pXAct);
1877 }
1878 else
1879 {
1880 /* transaction should be removed from the queue before handling */
1881 WDML_UnQueueTransaction(pConv, pXAct);
1882 WDML_ServerHandle(pConv, pXAct);
1883 }
1884
1885 WDML_FreeTransaction(pConv->instance, pXAct, TRUE);
1886
1887 if (wCmd == EC_ENABLEONE) break;
1888 }
1889 return TRUE;
1890 }
1891
1892 /*****************************************************************
1893 * DdeEnableCallback (USER32.@)
1894 */
1895 BOOL WINAPI DdeEnableCallback(DWORD idInst, HCONV hConv, UINT wCmd)
1896 {
1897 BOOL ret = FALSE;
1898 WDML_CONV *pConv;
1899
1900 TRACE("(%d, %p, %04x)\n", idInst, hConv, wCmd);
1901
1902 if (hConv)
1903 {
1904 pConv = WDML_GetConv(hConv, TRUE);
1905
1906 if (pConv && pConv->instance->instanceID == idInst)
1907 ret = WDML_EnableCallback(pConv, wCmd);
1908 }
1909 else
1910 {
1911 WDML_INSTANCE *pInstance = WDML_GetInstance(idInst);
1912
1913 if (!pInstance)
1914 return FALSE;
1915
1916 TRACE("adding flags %04x to instance %p\n", wCmd, pInstance);
1917 pInstance->wStatus |= wCmd;
1918
1919 if (wCmd == EC_DISABLE)
1920 {
1921 pInstance->wStatus |= ST_BLOCKED;
1922 TRACE("EC_DISABLE: inst %p status flags %04x\n", pInstance, pInstance->wStatus);
1923 }
1924 else if (wCmd == EC_ENABLEALL)
1925 {
1926 pInstance->wStatus &= ~ST_BLOCKED;
1927 TRACE("EC_ENABLEALL: inst %p status flags %04x\n", pInstance, pInstance->wStatus);
1928 }
1929
1930 ret = TRUE;
1931
1932 for (pConv = pInstance->convs[WDML_CLIENT_SIDE]; pConv != NULL; pConv = pConv->next)
1933 {
1934 ret = WDML_EnableCallback(pConv, wCmd);
1935 if (ret && wCmd == EC_QUERYWAITING) break;
1936 }
1937 }
1938
1939 return ret;
1940 }
1941
1942 /******************************************************************
1943 * WDML_GetConv
1944 *
1945 *
1946 */
1947 WDML_CONV* WDML_GetConv(HCONV hConv, BOOL checkConnected)
1948 {
1949 WDML_CONV* pConv = (WDML_CONV*)hConv;
1950
1951 /* FIXME: should do better checking */
1952 if (pConv == NULL || pConv->magic != WDML_CONV_MAGIC) return NULL;
1953
1954 if (!pConv->instance || pConv->instance->threadID != GetCurrentThreadId())
1955 {
1956 WARN("wrong thread ID\n");
1957 pConv->instance->lastError = DMLERR_INVALIDPARAMETER; /* FIXME: check */
1958 return NULL;
1959 }
1960
1961 if (checkConnected && !(pConv->wStatus & ST_CONNECTED))
1962 {
1963 WARN("found conv but ain't connected\n");
1964 pConv->instance->lastError = DMLERR_NO_CONV_ESTABLISHED;
1965 return NULL;
1966 }
1967
1968 return pConv;
1969 }
1970
1971 /******************************************************************
1972 * WDML_GetConvFromWnd
1973 *
1974 *
1975 */
1976 WDML_CONV* WDML_GetConvFromWnd(HWND hWnd)
1977 {
1978 return (WDML_CONV*)GetWindowLongPtrW(hWnd, GWL_WDML_CONVERSATION);
1979 }
1980
1981 /******************************************************************
1982 * WDML_PostAck
1983 *
1984 *
1985 */
1986 BOOL WDML_PostAck(WDML_CONV* pConv, WDML_SIDE side, WORD appRetCode,
1987 BOOL fBusy, BOOL fAck, UINT_PTR pmt, LPARAM lParam, UINT oldMsg)
1988 {
1989 DDEACK ddeAck;
1990 HWND from, to;
1991
1992 if (side == WDML_SERVER_SIDE)
1993 {
1994 from = pConv->hwndServer;
1995 to = pConv->hwndClient;
1996 }
1997 else
1998 {
1999 to = pConv->hwndServer;
2000 from = pConv->hwndClient;
2001 }
2002
2003 ddeAck.bAppReturnCode = appRetCode;
2004 ddeAck.reserved = 0;
2005 ddeAck.fBusy = fBusy;
2006 ddeAck.fAck = fAck;
2007
2008 TRACE("Posting a %s ack\n", ddeAck.fAck ? "positive" : "negative");
2009
2010 lParam = (lParam) ? ReuseDDElParam(lParam, oldMsg, WM_DDE_ACK, *(WORD*)&ddeAck, pmt) :
2011 PackDDElParam(WM_DDE_ACK, *(WORD*)&ddeAck, pmt);
2012 if (!PostMessageW(to, WM_DDE_ACK, (WPARAM)from, lParam))
2013 {
2014 pConv->wStatus &= ~ST_CONNECTED;
2015 pConv->instance->lastError = DMLERR_POSTMSG_FAILED;
2016 FreeDDElParam(WM_DDE_ACK, lParam);
2017 return FALSE;
2018 }
2019 return TRUE;
2020 }
2021
2022 /*****************************************************************
2023 * DdeSetUserHandle (USER32.@)
2024 */
2025 BOOL WINAPI DdeSetUserHandle(HCONV hConv, DWORD id, DWORD hUser)
2026 {
2027 WDML_CONV* pConv;
2028
2029 pConv = WDML_GetConv(hConv, FALSE);
2030 if (pConv == NULL)
2031 return FALSE;
2032
2033 if (id == QID_SYNC)
2034 {
2035 pConv->hUser = hUser;
2036 }
2037 else
2038 {
2039 WDML_XACT* pXAct;
2040
2041 pXAct = WDML_FindTransaction(pConv, id);
2042 if (pXAct)
2043 {
2044 pXAct->hUser = hUser;
2045 }
2046 else
2047 {
2048 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2049 return FALSE;
2050 }
2051 }
2052 return TRUE;
2053 }
2054
2055 /******************************************************************
2056 * WDML_GetLocalConvInfo
2057 *
2058 *
2059 */
2060 static BOOL WDML_GetLocalConvInfo(WDML_CONV* pConv, CONVINFO* ci, DWORD id)
2061 {
2062 BOOL ret = TRUE;
2063 WDML_LINK* pLink;
2064 WDML_SIDE side;
2065
2066 ci->hConvPartner = (pConv->wStatus & ST_ISLOCAL) ? (HCONV)((ULONG_PTR)pConv | 1) : 0;
2067 ci->hszSvcPartner = pConv->hszService;
2068 ci->hszServiceReq = pConv->hszService; /* FIXME: they shouldn't be the same, should they ? */
2069 ci->hszTopic = pConv->hszTopic;
2070 ci->wStatus = pConv->wStatus;
2071
2072 side = (pConv->wStatus & ST_CLIENT) ? WDML_CLIENT_SIDE : WDML_SERVER_SIDE;
2073
2074 for (pLink = pConv->instance->links[side]; pLink != NULL; pLink = pLink->next)
2075 {
2076 if (pLink->hConv == (HCONV)pConv)
2077 {
2078 ci->wStatus |= ST_ADVISE;
2079 break;
2080 }
2081 }
2082
2083 /* FIXME: non handled status flags:
2084 ST_BLOCKED
2085 ST_BLOCKNEXT
2086 ST_INLIST
2087 */
2088
2089 ci->wConvst = pConv->wConvst; /* FIXME */
2090
2091 ci->wLastError = 0; /* FIXME: note it's not the instance last error */
2092 ci->hConvList = 0;
2093 ci->ConvCtxt = pConv->convContext;
2094 if (ci->wStatus & ST_CLIENT)
2095 {
2096 ci->hwnd = pConv->hwndClient;
2097 ci->hwndPartner = pConv->hwndServer;
2098 }
2099 else
2100 {
2101 ci->hwnd = pConv->hwndServer;
2102 ci->hwndPartner = pConv->hwndClient;
2103 }
2104 if (id == QID_SYNC)
2105 {
2106 ci->hUser = pConv->hUser;
2107 ci->hszItem = 0;
2108 ci->wFmt = 0;
2109 ci->wType = 0;
2110 }
2111 else
2112 {
2113 WDML_XACT* pXAct;
2114
2115 pXAct = WDML_FindTransaction(pConv, id);
2116 if (pXAct)
2117 {
2118 ci->hUser = pXAct->hUser;
2119 ci->hszItem = pXAct->hszItem;
2120 ci->wFmt = pXAct->wFmt;
2121 ci->wType = pXAct->wType;
2122 }
2123 else
2124 {
2125 ret = 0;
2126 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2127 }
2128 }
2129 return ret;
2130 }
2131
2132 /******************************************************************
2133 * DdeQueryConvInfo (USER32.@)
2134 *
2135 * FIXME: Set last DDE error on failure.
2136 */
2137 UINT WINAPI DdeQueryConvInfo(HCONV hConv, DWORD id, PCONVINFO lpConvInfo)
2138 {
2139 UINT ret = lpConvInfo->cb;
2140 CONVINFO ci;
2141 WDML_CONV* pConv;
2142
2143 TRACE("(%p,%x,%p)\n", hConv, id, lpConvInfo);
2144
2145 if (!hConv)
2146 {
2147 FIXME("hConv is NULL\n");
2148 return 0;
2149 }
2150
2151 pConv = WDML_GetConv(hConv, FALSE);
2152 if (pConv != NULL)
2153 {
2154 if (!WDML_GetLocalConvInfo(pConv, &ci, id))
2155 ret = 0;
2156 }
2157 else
2158 {
2159 if ((ULONG_PTR)hConv & 1)
2160 {
2161 pConv = WDML_GetConv((HCONV)((ULONG_PTR)hConv & ~1), FALSE);
2162 if (pConv != NULL)
2163 FIXME("Request on remote conversation information is not implemented yet\n");
2164 }
2165 ret = 0;
2166 }
2167
2168 if (ret != 0)
2169 memcpy(lpConvInfo, &ci, min((size_t)lpConvInfo->cb, sizeof(ci)));
2170 return ret;
2171 }
2172
2173 /* ================================================================
2174 *
2175 * Link (hot & warm) management
2176 *
2177 * ================================================================ */
2178
2179 /******************************************************************
2180 * WDML_AddLink
2181 *
2182 *
2183 */
2184 void WDML_AddLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2185 UINT wType, HSZ hszItem, UINT wFmt)
2186 {
2187 WDML_LINK* pLink;
2188
2189 pLink = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_LINK));
2190 if (pLink == NULL)
2191 {
2192 ERR("OOM\n");
2193 return;
2194 }
2195
2196 pLink->hConv = hConv;
2197 pLink->transactionType = wType;
2198 WDML_IncHSZ(pInstance, pLink->hszItem = hszItem);
2199 pLink->uFmt = wFmt;
2200 pLink->next = pInstance->links[side];
2201 pInstance->links[side] = pLink;
2202 }
2203
2204 /******************************************************************
2205 * WDML_RemoveLink
2206 *
2207 *
2208 */
2209 void WDML_RemoveLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2210 HSZ hszItem, UINT uFmt)
2211 {
2212 WDML_LINK* pPrev = NULL;
2213 WDML_LINK* pCurrent = NULL;
2214
2215 pCurrent = pInstance->links[side];
2216
2217 while (pCurrent != NULL)
2218 {
2219 if (pCurrent->hConv == hConv &&
2220 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2221 pCurrent->uFmt == uFmt)
2222 {
2223 if (pCurrent == pInstance->links[side])
2224 {
2225 pInstance->links[side] = pCurrent->next;
2226 }
2227 else
2228 {
2229 pPrev->next = pCurrent->next;
2230 }
2231
2232 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2233 HeapFree(GetProcessHeap(), 0, pCurrent);
2234 break;
2235 }
2236
2237 pPrev = pCurrent;
2238 pCurrent = pCurrent->next;
2239 }
2240 }
2241
2242 /* this function is called to remove all links related to the conv.
2243 It should be called from both client and server when terminating
2244 the conversation.
2245 */
2246 /******************************************************************
2247 * WDML_RemoveAllLinks
2248 *
2249 *
2250 */
2251 void WDML_RemoveAllLinks(WDML_INSTANCE* pInstance, WDML_CONV* pConv, WDML_SIDE side)
2252 {
2253 WDML_LINK* pPrev = NULL;
2254 WDML_LINK* pCurrent = NULL;
2255 WDML_LINK* pNext = NULL;
2256
2257 pCurrent = pInstance->links[side];
2258
2259 while (pCurrent != NULL)
2260 {
2261 if (pCurrent->hConv == (HCONV)pConv)
2262 {
2263 if (pCurrent == pInstance->links[side])
2264 {
2265 pInstance->links[side] = pCurrent->next;
2266 pNext = pCurrent->next;
2267 }
2268 else
2269 {
2270 pPrev->next = pCurrent->next;
2271 pNext = pCurrent->next;
2272 }
2273
2274 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2275
2276 HeapFree(GetProcessHeap(), 0, pCurrent);
2277 pCurrent = NULL;
2278 }
2279
2280 if (pCurrent)
2281 {
2282 pPrev = pCurrent;
2283 pCurrent = pCurrent->next;
2284 }
2285 else
2286 {
2287 pCurrent = pNext;
2288 }
2289 }
2290 }
2291
2292 /******************************************************************
2293 * WDML_FindLink
2294 *
2295 *
2296 */
2297 WDML_LINK* WDML_FindLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2298 HSZ hszItem, BOOL use_fmt, UINT uFmt)
2299 {
2300 WDML_LINK* pCurrent = NULL;
2301
2302 for (pCurrent = pInstance->links[side]; pCurrent != NULL; pCurrent = pCurrent->next)
2303 {
2304 /* we don't need to check for transaction type as it can be altered */
2305
2306 if (pCurrent->hConv == hConv &&
2307 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2308 (!use_fmt || pCurrent->uFmt == uFmt))
2309 {
2310 break;
2311 }
2312
2313 }
2314
2315 return pCurrent;
2316 }
2317
2318 /* ================================================================
2319 *
2320 * Transaction management
2321 *
2322 * ================================================================ */
2323
2324 /******************************************************************
2325 * WDML_AllocTransaction
2326 *
2327 * Alloc a transaction structure for handling the message ddeMsg
2328 */
2329 WDML_XACT* WDML_AllocTransaction(WDML_INSTANCE* pInstance, UINT ddeMsg,
2330 UINT wFmt, HSZ hszItem)
2331 {
2332 WDML_XACT* pXAct;
2333 static WORD tid = 1; /* FIXME: wrap around */
2334
2335 pXAct = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_XACT));
2336 if (!pXAct)
2337 {
2338 pInstance->lastError = DMLERR_MEMORY_ERROR;
2339 return NULL;
2340 }
2341
2342 pXAct->xActID = tid++;
2343 pXAct->ddeMsg = ddeMsg;
2344 pXAct->hDdeData = 0;
2345 pXAct->hUser = 0;
2346 pXAct->next = NULL;
2347 pXAct->wType = 0;
2348 pXAct->wFmt = wFmt;
2349 if ((pXAct->hszItem = hszItem)) WDML_IncHSZ(pInstance, pXAct->hszItem);
2350 pXAct->atom = 0;
2351 pXAct->hMem = 0;
2352 pXAct->lParam = 0;
2353
2354 return pXAct;
2355 }
2356
2357 /******************************************************************
2358 * WDML_QueueTransaction
2359 *
2360 * Adds a transaction to the list of transaction
2361 */
2362 void WDML_QueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2363 {
2364 WDML_XACT** pt;
2365
2366 /* advance to last in queue */
2367 for (pt = &pConv->transactions; *pt != NULL; pt = &(*pt)->next);
2368 *pt = pXAct;
2369 }
2370
2371 /******************************************************************
2372 * WDML_UnQueueTransaction
2373 *
2374 *
2375 */
2376 BOOL WDML_UnQueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2377 {
2378 WDML_XACT** pt;
2379
2380 for (pt = &pConv->transactions; *pt; pt = &(*pt)->next)
2381 {
2382 if (*pt == pXAct)
2383 {
2384 *pt = pXAct->next;
2385 return TRUE;
2386 }
2387 }
2388 return FALSE;
2389 }
2390
2391 /******************************************************************
2392 * WDML_FreeTransaction
2393 *
2394 *
2395 */
2396 void WDML_FreeTransaction(WDML_INSTANCE* pInstance, WDML_XACT* pXAct, BOOL doFreePmt)
2397 {
2398 /* free pmt(s) in pXAct too. check against one for not deleting TRUE return values */
2399 if (doFreePmt && (ULONG_PTR)pXAct->hMem > 1)
2400 {
2401 GlobalFree(pXAct->hMem);
2402 }
2403 if (pXAct->hszItem) WDML_DecHSZ(pInstance, pXAct->hszItem);
2404
2405 HeapFree(GetProcessHeap(), 0, pXAct);
2406 }
2407
2408 /******************************************************************
2409 * WDML_FindTransaction
2410 *
2411 *
2412 */
2413 WDML_XACT* WDML_FindTransaction(WDML_CONV* pConv, DWORD tid)
2414 {
2415 WDML_XACT* pXAct;
2416
2417 tid = HIWORD(tid);
2418 for (pXAct = pConv->transactions; pXAct; pXAct = pXAct->next)
2419 {
2420 if (pXAct->xActID == tid)
2421 break;
2422 }
2423 return pXAct;
2424 }
2425
2426 /* ================================================================
2427 *
2428 * Information broadcast across DDEML implementations
2429 *
2430 * ================================================================ */
2431
2432 struct tagWDML_BroadcastPmt
2433 {
2434 LPCWSTR clsName;
2435 UINT uMsg;
2436 WPARAM wParam;
2437 LPARAM lParam;
2438 };
2439
2440 /******************************************************************
2441 * WDML_BroadcastEnumProc
2442 *
2443 *
2444 */
2445 static BOOL CALLBACK WDML_BroadcastEnumProc(HWND hWnd, LPARAM lParam)
2446 {
2447 struct tagWDML_BroadcastPmt* s = (struct tagWDML_BroadcastPmt*)lParam;
2448 WCHAR buffer[128];
2449
2450 if (GetClassNameW(hWnd, buffer, 128) > 0 &&
2451 lstrcmpiW(buffer, s->clsName) == 0)
2452 {
2453 PostMessageW(hWnd, s->uMsg, s->wParam, s->lParam);
2454 }
2455 return TRUE;
2456 }
2457
2458 /******************************************************************
2459 * WDML_BroadcastDDEWindows
2460 *
2461 *
2462 */
2463 void WDML_BroadcastDDEWindows(LPCWSTR clsName, UINT uMsg, WPARAM wParam, LPARAM lParam)
2464 {
2465 struct tagWDML_BroadcastPmt s;
2466
2467 s.clsName = clsName;
2468 s.uMsg = uMsg;
2469 s.wParam = wParam;
2470 s.lParam = lParam;
2471 EnumWindows(WDML_BroadcastEnumProc, (LPARAM)&s);
2472 }
Maarten's multimedia branch