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dplayx: Adjust GetCaps behaviour to documentation
[wine/gsoc_dplay.git] / dlls / user32 / dde_misc.c
blob1a9b662bd59f4780c98975975ff3359be7522980
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 MAKELONG(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)
345 {
346 WDML_INSTANCE* pInstance;
347 WDML_INSTANCE* reference_inst;
348 UINT ret;
349 WNDCLASSEXW wndclass;
350
351 TRACE("(%p,%p,0x%x,%d,0x%x)\n",
352 pidInst, pfnCallback, afCmd, ulRes, bUnicode);
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->nodeList = NULL; /* node will be added later */
381 pInstance->monitorFlags = afCmd & MF_MASK;
382 pInstance->wStatus = 0;
383 pInstance->servers = NULL;
384 pInstance->convs[0] = NULL;
385 pInstance->convs[1] = NULL;
386 pInstance->links[0] = NULL;
387 pInstance->links[1] = NULL;
388
389 /* isolate CBF flags in one go, expect this will go the way of all attempts to be clever !! */
390
391 pInstance->CBFflags = afCmd^((afCmd&MF_MASK)|((afCmd&APPCMD_MASK)|(afCmd&APPCLASS_MASK)));
392
393 if (!pInstance->clientOnly)
394 {
395 /* Check for other way of setting Client-only !! */
396 pInstance->clientOnly =
397 (pInstance->CBFflags & CBF_FAIL_ALLSVRXACTIONS) == CBF_FAIL_ALLSVRXACTIONS;
398 }
399
400 TRACE("instance created - checking validity\n");
401
402 if (*pidInst == 0)
403 {
404 /* Initialisation of new Instance Identifier */
405 TRACE("new instance, callback %p flags %X\n",pfnCallback,afCmd);
406
407 EnterCriticalSection(&WDML_CritSect);
408
409 if (WDML_InstanceList == NULL)
410 {
411 /* can't be another instance in this case, assign to the base pointer */
412 WDML_InstanceList = pInstance;
413
414 /* since first must force filter of XTYP_CONNECT and XTYP_WILDCONNECT for
415 * present
416 * ------------------------------- NOTE NOTE NOTE --------------------------
417 *
418 * the manual is not clear if this condition
419 * applies to the first call to DdeInitialize from an application, or the
420 * first call for a given callback !!!
421 */
422
423 pInstance->CBFflags = pInstance->CBFflags|APPCMD_FILTERINITS;
424 TRACE("First application instance detected OK\n");
425 /* allocate new instance ID */
426 WDML_IncrementInstanceId(pInstance);
427 }
428 else
429 {
430 /* really need to chain the new one in to the latest here, but after checking conditions
431 * such as trying to start a conversation from an application trying to monitor */
432 reference_inst = WDML_InstanceList;
433 TRACE("Subsequent application instance - starting checks\n");
434 while (reference_inst->next != NULL)
435 {
436 /*
437 * This set of tests will work if application uses same instance Id
438 * at application level once allocated - which is what manual implies
439 * should happen. If someone tries to be
440 * clever (lazy ?) it will fail to pick up that later calls are for
441 * the same application - should we trust them ?
442 */
443 if (pInstance->instanceID == reference_inst->instanceID)
444 {
445 /* Check 1 - must be same Client-only state */
446
447 if (pInstance->clientOnly != reference_inst->clientOnly)
448 {
449 ret = DMLERR_DLL_USAGE;
450 goto theError;
451 }
452
453 /* Check 2 - cannot use 'Monitor' with any non-monitor modes */
454
455 if (pInstance->monitor != reference_inst->monitor)
456 {
457 ret = DMLERR_INVALIDPARAMETER;
458 goto theError;
459 }
460
461 /* Check 3 - must supply different callback address */
462
463 if (pInstance->callback == reference_inst->callback)
464 {
465 ret = DMLERR_DLL_USAGE;
466 goto theError;
467 }
468 }
469 reference_inst = reference_inst->next;
470 }
471 /* All cleared, add to chain */
472
473 TRACE("Application Instance checks finished\n");
474 WDML_IncrementInstanceId(pInstance);
475 reference_inst->next = pInstance;
476 }
477 LeaveCriticalSection(&WDML_CritSect);
478
479 *pidInst = pInstance->instanceID;
480
481 /* for deadlock issues, windows must always be created when outside the critical section */
482 wndclass.cbSize = sizeof(wndclass);
483 wndclass.style = 0;
484 wndclass.lpfnWndProc = WDML_EventProc;
485 wndclass.cbClsExtra = 0;
486 wndclass.cbWndExtra = sizeof(ULONG_PTR);
487 wndclass.hInstance = 0;
488 wndclass.hIcon = 0;
489 wndclass.hCursor = 0;
490 wndclass.hbrBackground = 0;
491 wndclass.lpszMenuName = NULL;
492 wndclass.lpszClassName = WDML_szEventClass;
493 wndclass.hIconSm = 0;
494
495 RegisterClassExW(&wndclass);
496
497 pInstance->hwndEvent = CreateWindowW(WDML_szEventClass, NULL,
498 WS_POPUP, 0, 0, 0, 0,
499 0, 0, 0, 0);
500
501 SetWindowLongPtrW(pInstance->hwndEvent, GWL_WDML_INSTANCE, (ULONG_PTR)pInstance);
502
503 TRACE("New application instance processing finished OK\n");
504 }
505 else
506 {
507 /* Reinitialisation situation --- FIX */
508 TRACE("reinitialisation of (%p,%p,0x%x,%d): stub\n", pidInst, pfnCallback, afCmd, ulRes);
509
510 EnterCriticalSection(&WDML_CritSect);
511
512 if (WDML_InstanceList == NULL)
513 {
514 ret = DMLERR_INVALIDPARAMETER;
515 goto theError;
516 }
517 /* can't reinitialise if we have initialised nothing !! */
518 reference_inst = WDML_InstanceList;
519 /* must first check if we have been given a valid instance to re-initialise !! how do we do that ? */
520 /*
521 * MS allows initialisation without specifying a callback, should we allow addition of the
522 * callback by a later call to initialise ? - if so this lot will have to change
523 */
524 while (reference_inst->next != NULL)
525 {
526 if (*pidInst == reference_inst->instanceID && pfnCallback == reference_inst->callback)
527 {
528 /* Check 1 - cannot change client-only mode if set via APPCMD_CLIENTONLY */
529
530 if (reference_inst->clientOnly)
531 {
532 if ((reference_inst->CBFflags & CBF_FAIL_ALLSVRXACTIONS) != CBF_FAIL_ALLSVRXACTIONS)
533 {
534 /* i.e. Was set to Client-only and through APPCMD_CLIENTONLY */
535
536 if (!(afCmd & APPCMD_CLIENTONLY))
537 {
538 ret = DMLERR_INVALIDPARAMETER;
539 goto theError;
540 }
541 }
542 }
543 /* Check 2 - cannot change monitor modes */
544
545 if (pInstance->monitor != reference_inst->monitor)
546 {
547 ret = DMLERR_INVALIDPARAMETER;
548 goto theError;
549 }
550
551 /* Check 3 - trying to set Client-only via APPCMD when not set so previously */
552
553 if ((afCmd&APPCMD_CLIENTONLY) && !reference_inst->clientOnly)
554 {
555 ret = DMLERR_INVALIDPARAMETER;
556 goto theError;
557 }
558 break;
559 }
560 reference_inst = reference_inst->next;
561 }
562 if (reference_inst->next == NULL)
563 {
564 ret = DMLERR_INVALIDPARAMETER;
565 goto theError;
566 }
567 /* All checked - change relevant flags */
568
569 reference_inst->CBFflags = pInstance->CBFflags;
570 reference_inst->clientOnly = pInstance->clientOnly;
571 reference_inst->monitorFlags = pInstance->monitorFlags;
572
573 HeapFree(GetProcessHeap(), 0, pInstance); /* finished - release heap space used as work store */
574
575 LeaveCriticalSection(&WDML_CritSect);
576 }
577
578 return DMLERR_NO_ERROR;
579 theError:
580 HeapFree(GetProcessHeap(), 0, pInstance);
581 LeaveCriticalSection(&WDML_CritSect);
582 return ret;
583 }
584
585 /******************************************************************************
586 * DdeInitializeA (USER32.@)
587 *
588 * See DdeInitializeW.
589 */
590 UINT WINAPI DdeInitializeA(LPDWORD pidInst, PFNCALLBACK pfnCallback,
591 DWORD afCmd, DWORD ulRes)
592 {
593 return WDML_Initialize(pidInst, pfnCallback, afCmd, ulRes, FALSE);
594 }
595
596 /******************************************************************************
597 * DdeInitializeW [USER32.@]
598 * Registers an application with the DDEML
599 *
600 * PARAMS
601 * pidInst [I] Pointer to instance identifier
602 * pfnCallback [I] Pointer to callback function
603 * afCmd [I] Set of command and filter flags
604 * ulRes [I] Reserved
605 *
606 * RETURNS
607 * Success: DMLERR_NO_ERROR
608 * Failure: DMLERR_DLL_USAGE, DMLERR_INVALIDPARAMETER, DMLERR_SYS_ERROR
609 */
610 UINT WINAPI DdeInitializeW(LPDWORD pidInst, PFNCALLBACK pfnCallback,
611 DWORD afCmd, DWORD ulRes)
612 {
613 return WDML_Initialize(pidInst, pfnCallback, afCmd, ulRes, TRUE);
614 }
615
616 /*****************************************************************
617 * DdeUninitialize [USER32.@] Frees DDEML resources
618 *
619 * PARAMS
620 * idInst [I] Instance identifier
621 *
622 * RETURNS
623 * Success: TRUE
624 * Failure: FALSE
625 */
626
627 BOOL WINAPI DdeUninitialize(DWORD idInst)
628 {
629 /* Stage one - check if we have a handle for this instance
630 */
631 WDML_INSTANCE* pInstance;
632 WDML_CONV* pConv;
633 WDML_CONV* pConvNext;
634
635 TRACE("(%d)\n", idInst);
636
637 /* First check instance
638 */
639 pInstance = WDML_GetInstance(idInst);
640 if (pInstance == NULL)
641 {
642 /*
643 * Needs something here to record NOT_INITIALIZED ready for DdeGetLastError
644 */
645 return FALSE;
646 }
647
648 /* first terminate all conversations client side
649 * this shall close existing links...
650 */
651 for (pConv = pInstance->convs[WDML_CLIENT_SIDE]; pConv != NULL; pConv = pConvNext)
652 {
653 pConvNext = pConv->next;
654 DdeDisconnect((HCONV)pConv);
655 }
656 if (pInstance->convs[WDML_CLIENT_SIDE])
657 FIXME("still pending conversations\n");
658
659 /* then unregister all known service names */
660 DdeNameService(idInst, 0, 0, DNS_UNREGISTER);
661
662 /* Free the nodes that were not freed by this instance
663 * and remove the nodes from the list of HSZ nodes.
664 */
665 WDML_FreeAllHSZ(pInstance);
666
667 DestroyWindow(pInstance->hwndEvent);
668
669 /* OK now delete the instance handle itself */
670
671 if (WDML_InstanceList == pInstance)
672 {
673 /* special case - the first/only entry */
674 WDML_InstanceList = pInstance->next;
675 }
676 else
677 {
678 /* general case, remove entry */
679 WDML_INSTANCE* inst;
680
681 for (inst = WDML_InstanceList; inst->next != pInstance; inst = inst->next);
682 inst->next = pInstance->next;
683 }
684 /* release the heap entry
685 */
686 HeapFree(GetProcessHeap(), 0, pInstance);
687
688 return TRUE;
689 }
690
691 /******************************************************************
692 * WDML_NotifyThreadExit
693 *
694 *
695 */
696 void WDML_NotifyThreadDetach(void)
697 {
698 WDML_INSTANCE* pInstance;
699 WDML_INSTANCE* next;
700 DWORD tid = GetCurrentThreadId();
701
702 EnterCriticalSection(&WDML_CritSect);
703 for (pInstance = WDML_InstanceList; pInstance != NULL; pInstance = next)
704 {
705 next = pInstance->next;
706 if (pInstance->threadID == tid)
707 {
708 LeaveCriticalSection(&WDML_CritSect);
709 DdeUninitialize(pInstance->instanceID);
710 EnterCriticalSection(&WDML_CritSect);
711 }
712 }
713 LeaveCriticalSection(&WDML_CritSect);
714 }
715
716 /******************************************************************
717 * WDML_InvokeCallback
718 *
719 *
720 */
721 HDDEDATA WDML_InvokeCallback(WDML_INSTANCE* pInstance, UINT uType, UINT uFmt, HCONV hConv,
722 HSZ hsz1, HSZ hsz2, HDDEDATA hdata,
723 ULONG_PTR dwData1, ULONG_PTR dwData2)
724 {
725 HDDEDATA ret;
726
727 if (pInstance == NULL)
728 return NULL;
729
730 TRACE("invoking CB[%p] (%x %x %p %p %p %p %lx %lx)\n",
731 pInstance->callback, uType, uFmt,
732 hConv, hsz1, hsz2, hdata, dwData1, dwData2);
733 ret = pInstance->callback(uType, uFmt, hConv, hsz1, hsz2, hdata, dwData1, dwData2);
734 TRACE("done => %p\n", ret);
735 return ret;
736 }
737
738 /*****************************************************************************
739 * WDML_GetInstance
740 *
741 * generic routine to return a pointer to the relevant DDE_HANDLE_ENTRY
742 * for an instance Id, or NULL if the entry does not exist
743 *
744 */
745 WDML_INSTANCE* WDML_GetInstance(DWORD instId)
746 {
747 WDML_INSTANCE* pInstance;
748
749 EnterCriticalSection(&WDML_CritSect);
750
751 for (pInstance = WDML_InstanceList; pInstance != NULL; pInstance = pInstance->next)
752 {
753 if (pInstance->instanceID == instId)
754 {
755 if (GetCurrentThreadId() != pInstance->threadID)
756 {
757 FIXME("Tried to get instance from wrong thread\n");
758 continue;
759 }
760 break;
761 }
762 }
763
764 LeaveCriticalSection(&WDML_CritSect);
765
766 if (!pInstance)
767 WARN("Instance entry missing for id %04x\n", instId);
768 return pInstance;
769 }
770
771 /******************************************************************
772 * WDML_GetInstanceFromWnd
773 *
774 *
775 */
776 WDML_INSTANCE* WDML_GetInstanceFromWnd(HWND hWnd)
777 {
778 return (WDML_INSTANCE*)GetWindowLongPtrW(hWnd, GWL_WDML_INSTANCE);
779 }
780
781 /******************************************************************************
782 * DdeGetLastError [USER32.@] Gets most recent error code
783 *
784 * PARAMS
785 * idInst [I] Instance identifier
786 *
787 * RETURNS
788 * Last error code
789 */
790 UINT WINAPI DdeGetLastError(DWORD idInst)
791 {
792 DWORD error_code;
793 WDML_INSTANCE* pInstance;
794
795 /* First check instance
796 */
797 pInstance = WDML_GetInstance(idInst);
798 if (pInstance == NULL)
799 {
800 error_code = DMLERR_INVALIDPARAMETER;
801 }
802 else
803 {
804 error_code = pInstance->lastError;
805 pInstance->lastError = 0;
806 }
807
808 return error_code;
809 }
810
811 /******************************************************************
812 * WDML_SetAllLastError
813 *
814 *
815 */
816 static void WDML_SetAllLastError(DWORD lastError)
817 {
818 DWORD threadID;
819 WDML_INSTANCE* pInstance;
820 threadID = GetCurrentThreadId();
821 pInstance = WDML_InstanceList;
822 while (pInstance)
823 {
824 if (pInstance->threadID == threadID)
825 pInstance->lastError = lastError;
826 pInstance = pInstance->next;
827 }
828 }
829
830 /* ================================================================
831 *
832 * String management
833 *
834 * ================================================================ */
835
836
837 /******************************************************************
838 * WDML_FindNode
839 *
840 *
841 */
842 static HSZNode* WDML_FindNode(WDML_INSTANCE* pInstance, HSZ hsz)
843 {
844 HSZNode* pNode;
845
846 if (pInstance == NULL) return NULL;
847
848 for (pNode = pInstance->nodeList; pNode != NULL; pNode = pNode->next)
849 {
850 if (pNode->hsz == hsz) break;
851 }
852 if (!pNode) WARN("HSZ %p not found\n", hsz);
853 return pNode;
854 }
855
856 /******************************************************************
857 * WDML_MakeAtomFromHsz
858 *
859 * Creates a global atom from an existing HSZ
860 * Generally used before sending an HSZ as an atom to a remote app
861 */
862 ATOM WDML_MakeAtomFromHsz(HSZ hsz)
863 {
864 WCHAR nameBuffer[MAX_BUFFER_LEN];
865
866 if (GetAtomNameW(HSZ2ATOM(hsz), nameBuffer, MAX_BUFFER_LEN))
867 return GlobalAddAtomW(nameBuffer);
868 WARN("HSZ %p not found\n", hsz);
869 return 0;
870 }
871
872 /******************************************************************
873 * WDML_MakeHszFromAtom
874 *
875 * Creates a HSZ from an existing global atom
876 * Generally used while receiving a global atom and transforming it
877 * into an HSZ
878 */
879 HSZ WDML_MakeHszFromAtom(const WDML_INSTANCE* pInstance, ATOM atom)
880 {
881 WCHAR nameBuffer[MAX_BUFFER_LEN];
882
883 if (!atom) return NULL;
884
885 if (GlobalGetAtomNameW(atom, nameBuffer, MAX_BUFFER_LEN))
886 {
887 TRACE("%x => %s\n", atom, debugstr_w(nameBuffer));
888 return DdeCreateStringHandleW(pInstance->instanceID, nameBuffer, CP_WINUNICODE);
889 }
890 WARN("ATOM 0x%x not found\n", atom);
891 return 0;
892 }
893
894 /******************************************************************
895 * WDML_IncHSZ
896 *
897 *
898 */
899 BOOL WDML_IncHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
900 {
901 HSZNode* pNode;
902
903 pNode = WDML_FindNode(pInstance, hsz);
904 if (!pNode) return FALSE;
905
906 pNode->refCount++;
907 return TRUE;
908 }
909
910 /******************************************************************************
911 * WDML_DecHSZ (INTERNAL)
912 *
913 * Decrease the ref count of an HSZ. If it reaches 0, the node is removed from the list
914 * of HSZ nodes
915 * Returns -1 is the HSZ isn't found, otherwise it's the current (after --) of the ref count
916 */
917 BOOL WDML_DecHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
918 {
919 HSZNode* pPrev = NULL;
920 HSZNode* pCurrent;
921
922 for (pCurrent = pInstance->nodeList; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
923 {
924 /* If we found the node we were looking for and its ref count is one,
925 * we can remove it
926 */
927 if (pCurrent->hsz == hsz)
928 {
929 if (--pCurrent->refCount == 0)
930 {
931 if (pCurrent == pInstance->nodeList)
932 {
933 pInstance->nodeList = pCurrent->next;
934 }
935 else
936 {
937 pPrev->next = pCurrent->next;
938 }
939 HeapFree(GetProcessHeap(), 0, pCurrent);
940 DeleteAtom(HSZ2ATOM(hsz));
941 }
942 return TRUE;
943 }
944 }
945 WARN("HSZ %p not found\n", hsz);
946
947 return FALSE;
948 }
949
950 /******************************************************************************
951 * WDML_FreeAllHSZ (INTERNAL)
952 *
953 * Frees up all the strings still allocated in the list and
954 * remove all the nodes from the list of HSZ nodes.
955 */
956 void WDML_FreeAllHSZ(WDML_INSTANCE* pInstance)
957 {
958 /* Free any strings created in this instance.
959 */
960 while (pInstance->nodeList != NULL)
961 {
962 DdeFreeStringHandle(pInstance->instanceID, pInstance->nodeList->hsz);
963 }
964 }
965
966 /******************************************************************************
967 * InsertHSZNode (INTERNAL)
968 *
969 * Insert a node to the head of the list.
970 */
971 static void WDML_InsertHSZNode(WDML_INSTANCE* pInstance, HSZ hsz)
972 {
973 if (hsz != 0)
974 {
975 HSZNode* pNew = NULL;
976 /* Create a new node for this HSZ.
977 */
978 pNew = HeapAlloc(GetProcessHeap(), 0, sizeof(HSZNode));
979 if (pNew != NULL)
980 {
981 pNew->hsz = hsz;
982 pNew->next = pInstance->nodeList;
983 pNew->refCount = 1;
984 pInstance->nodeList = pNew;
985 }
986 else
987 {
988 ERR("Primary HSZ Node allocation failed - out of memory\n");
989 }
990 }
991 }
992
993 /******************************************************************
994 * WDML_QueryString
995 *
996 *
997 */
998 static int WDML_QueryString(WDML_INSTANCE* pInstance, HSZ hsz, LPVOID ptr, DWORD cchMax,
999 int codepage)
1000 {
1001 WCHAR pString[MAX_BUFFER_LEN];
1002 int ret;
1003 /* If psz is null, we have to return only the length
1004 * of the string.
1005 */
1006 if (ptr == NULL)
1007 {
1008 ptr = pString;
1009 cchMax = MAX_BUFFER_LEN;
1010 }
1011
1012 /* if there is no input windows returns a NULL string */
1013 if (hsz == NULL)
1014 {
1015 CHAR *t_ptr = ptr;
1016 *t_ptr = '\0';
1017 return 1;
1018 }
1019
1020 switch (codepage)
1021 {
1022 case CP_WINANSI:
1023 ret = GetAtomNameA(HSZ2ATOM(hsz), ptr, cchMax);
1024 break;
1025 case CP_WINUNICODE:
1026 ret = GetAtomNameW(HSZ2ATOM(hsz), ptr, cchMax);
1027 break;
1028 default:
1029 ERR("Unknown code page %d\n", codepage);
1030 ret = 0;
1031 }
1032 return ret;
1033 }
1034
1035 /*****************************************************************
1036 * DdeQueryStringA [USER32.@]
1037 */
1038 DWORD WINAPI DdeQueryStringA(DWORD idInst, HSZ hsz, LPSTR psz, DWORD cchMax, INT iCodePage)
1039 {
1040 DWORD ret = 0;
1041 WDML_INSTANCE* pInstance;
1042
1043 TRACE("(%d, %p, %p, %d, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1044
1045 /* First check instance
1046 */
1047 pInstance = WDML_GetInstance(idInst);
1048 if (pInstance != NULL)
1049 {
1050 if (iCodePage == 0) iCodePage = CP_WINANSI;
1051 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1052 }
1053
1054 TRACE("returning %d (%s)\n", ret, debugstr_a(psz));
1055 return ret;
1056 }
1057
1058 /*****************************************************************
1059 * DdeQueryStringW [USER32.@]
1060 */
1061
1062 DWORD WINAPI DdeQueryStringW(DWORD idInst, HSZ hsz, LPWSTR psz, DWORD cchMax, INT iCodePage)
1063 {
1064 DWORD ret = 0;
1065 WDML_INSTANCE* pInstance;
1066
1067 TRACE("(%d, %p, %p, %d, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1068
1069 /* First check instance
1070 */
1071 pInstance = WDML_GetInstance(idInst);
1072 if (pInstance != NULL)
1073 {
1074 if (iCodePage == 0) iCodePage = CP_WINUNICODE;
1075 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1076 }
1077
1078 TRACE("returning %d (%s)\n", ret, debugstr_w(psz));
1079 return ret;
1080 }
1081
1082 /******************************************************************
1083 * DML_CreateString
1084 *
1085 *
1086 */
1087 static HSZ WDML_CreateString(WDML_INSTANCE* pInstance, LPCVOID ptr, int codepage)
1088 {
1089 HSZ hsz;
1090
1091 switch (codepage)
1092 {
1093 case CP_WINANSI:
1094 hsz = ATOM2HSZ(AddAtomA(ptr));
1095 TRACE("added atom %s with HSZ %p,\n", debugstr_a(ptr), hsz);
1096 break;
1097 case CP_WINUNICODE:
1098 hsz = ATOM2HSZ(AddAtomW(ptr));
1099 TRACE("added atom %s with HSZ %p,\n", debugstr_w(ptr), hsz);
1100 break;
1101 default:
1102 ERR("Unknown code page %d\n", codepage);
1103 return 0;
1104 }
1105 WDML_InsertHSZNode(pInstance, hsz);
1106 return hsz;
1107 }
1108
1109 /*****************************************************************
1110 * DdeCreateStringHandleA [USER32.@]
1111 *
1112 * See DdeCreateStringHandleW.
1113 */
1114 HSZ WINAPI DdeCreateStringHandleA(DWORD idInst, LPCSTR psz, INT codepage)
1115 {
1116 HSZ hsz = 0;
1117 WDML_INSTANCE* pInstance;
1118
1119 TRACE("(%d,%s,%d)\n", idInst, debugstr_a(psz), codepage);
1120
1121 pInstance = WDML_GetInstance(idInst);
1122 if (pInstance == NULL)
1123 WDML_SetAllLastError(DMLERR_INVALIDPARAMETER);
1124 else
1125 {
1126 if (codepage == 0) codepage = CP_WINANSI;
1127 hsz = WDML_CreateString(pInstance, psz, codepage);
1128 }
1129
1130 return hsz;
1131 }
1132
1133
1134 /******************************************************************************
1135 * DdeCreateStringHandleW [USER32.@] Creates handle to identify string
1136 *
1137 * PARAMS
1138 * idInst [I] Instance identifier
1139 * psz [I] Pointer to string
1140 * codepage [I] Code page identifier
1141 * RETURNS
1142 * Success: String handle
1143 * Failure: 0
1144 */
1145 HSZ WINAPI DdeCreateStringHandleW(DWORD idInst, LPCWSTR psz, INT codepage)
1146 {
1147 WDML_INSTANCE* pInstance;
1148 HSZ hsz = 0;
1149
1150 pInstance = WDML_GetInstance(idInst);
1151 if (pInstance == NULL)
1152 WDML_SetAllLastError(DMLERR_INVALIDPARAMETER);
1153 else
1154 {
1155 if (codepage == 0) codepage = CP_WINUNICODE;
1156 hsz = WDML_CreateString(pInstance, psz, codepage);
1157 }
1158
1159 return hsz;
1160 }
1161
1162 /*****************************************************************
1163 * DdeFreeStringHandle (USER32.@)
1164 * RETURNS
1165 * success: nonzero
1166 * fail: zero
1167 */
1168 BOOL WINAPI DdeFreeStringHandle(DWORD idInst, HSZ hsz)
1169 {
1170 WDML_INSTANCE* pInstance;
1171 BOOL ret = FALSE;
1172
1173 TRACE("(%d,%p):\n", idInst, hsz);
1174
1175 /* First check instance
1176 */
1177 pInstance = WDML_GetInstance(idInst);
1178 if (pInstance)
1179 ret = WDML_DecHSZ(pInstance, hsz);
1180
1181 return ret;
1182 }
1183
1184 /*****************************************************************
1185 * DdeKeepStringHandle (USER32.@)
1186 *
1187 * RETURNS
1188 * success: nonzero
1189 * fail: zero
1190 */
1191 BOOL WINAPI DdeKeepStringHandle(DWORD idInst, HSZ hsz)
1192 {
1193 WDML_INSTANCE* pInstance;
1194 BOOL ret = FALSE;
1195
1196 TRACE("(%d,%p):\n", idInst, hsz);
1197
1198 /* First check instance
1199 */
1200 pInstance = WDML_GetInstance(idInst);
1201 if (pInstance)
1202 ret = WDML_IncHSZ(pInstance, hsz);
1203
1204 return ret;
1205 }
1206
1207 /*****************************************************************
1208 * DdeCmpStringHandles (USER32.@)
1209 *
1210 * Compares the value of two string handles. This comparison is
1211 * not case sensitive.
1212 *
1213 * PARAMS
1214 * hsz1 [I] Handle to the first string
1215 * hsz2 [I] Handle to the second string
1216 *
1217 * RETURNS
1218 * -1 The value of hsz1 is zero or less than hsz2
1219 * 0 The values of hsz 1 and 2 are the same or both zero.
1220 * 1 The value of hsz2 is zero of less than hsz1
1221 */
1222 INT WINAPI DdeCmpStringHandles(HSZ hsz1, HSZ hsz2)
1223 {
1224 WCHAR psz1[MAX_BUFFER_LEN];
1225 WCHAR psz2[MAX_BUFFER_LEN];
1226 int ret = 0;
1227 int ret1, ret2;
1228
1229 ret1 = GetAtomNameW(HSZ2ATOM(hsz1), psz1, MAX_BUFFER_LEN);
1230 ret2 = GetAtomNameW(HSZ2ATOM(hsz2), psz2, MAX_BUFFER_LEN);
1231
1232 TRACE("(%p<%s> %p<%s>);\n", hsz1, debugstr_w(psz1), hsz2, debugstr_w(psz2));
1233
1234 /* Make sure we found both strings. */
1235 if (ret1 == 0 && ret2 == 0)
1236 {
1237 /* If both are not found, return both "zero strings". */
1238 ret = 0;
1239 }
1240 else if (ret1 == 0)
1241 {
1242 /* If hsz1 is a not found, return hsz1 is "zero string". */
1243 ret = -1;
1244 }
1245 else if (ret2 == 0)
1246 {
1247 /* If hsz2 is a not found, return hsz2 is "zero string". */
1248 ret = 1;
1249 }
1250 else
1251 {
1252 /* Compare the two strings we got (case insensitive). */
1253 ret = lstrcmpiW(psz1, psz2);
1254 /* Since strcmp returns any number smaller than
1255 * 0 when the first string is found to be less than
1256 * the second one we must make sure we are returning
1257 * the proper values.
1258 */
1259 if (ret < 0)
1260 {
1261 ret = -1;
1262 }
1263 else if (ret > 0)
1264 {
1265 ret = 1;
1266 }
1267 }
1268
1269 return ret;
1270 }
1271
1272 /* ================================================================
1273 *
1274 * Data handle management
1275 *
1276 * ================================================================ */
1277
1278 /*****************************************************************
1279 * DdeCreateDataHandle (USER32.@)
1280 */
1281 HDDEDATA WINAPI DdeCreateDataHandle(DWORD idInst, LPBYTE pSrc, DWORD cb, DWORD cbOff,
1282 HSZ hszItem, UINT wFmt, UINT afCmd)
1283 {
1284
1285 /* Other than check for validity we will ignore for now idInst, hszItem.
1286 * The purpose of these arguments still need to be investigated.
1287 */
1288
1289 WDML_INSTANCE* pInstance;
1290 HGLOBAL hMem;
1291 LPBYTE pByte;
1292 DDE_DATAHANDLE_HEAD* pDdh;
1293 WCHAR psz[MAX_BUFFER_LEN];
1294
1295 pInstance = WDML_GetInstance(idInst);
1296 if (pInstance == NULL)
1297 {
1298 WDML_SetAllLastError(DMLERR_INVALIDPARAMETER);
1299 return NULL;
1300 }
1301
1302 if (!GetAtomNameW(HSZ2ATOM(hszItem), psz, MAX_BUFFER_LEN))
1303 {
1304 psz[0] = HSZ2ATOM(hszItem);
1305 psz[1] = 0;
1306 }
1307
1308 TRACE("(%d,%p,cb %d, cbOff %d,%p <%s>,fmt %04x,%x)\n",
1309 idInst, pSrc, cb, cbOff, hszItem, debugstr_w(psz), wFmt, afCmd);
1310
1311 if (afCmd != 0 && afCmd != HDATA_APPOWNED)
1312 return 0;
1313
1314 /* we use the first 4 bytes to store the size */
1315 if (!(hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, cb + cbOff + sizeof(DDE_DATAHANDLE_HEAD))))
1316 {
1317 ERR("GlobalAlloc failed\n");
1318 return 0;
1319 }
1320
1321 pDdh = GlobalLock(hMem);
1322 if (!pDdh)
1323 {
1324 GlobalFree(hMem);
1325 return 0;
1326 }
1327
1328 pDdh->cfFormat = wFmt;
1329 pDdh->bAppOwned = (afCmd == HDATA_APPOWNED);
1330
1331 pByte = (LPBYTE)(pDdh + 1);
1332 if (pSrc)
1333 {
1334 memcpy(pByte, pSrc + cbOff, cb);
1335 }
1336 GlobalUnlock(hMem);
1337
1338 TRACE("=> %p\n", hMem);
1339 return hMem;
1340 }
1341
1342 /*****************************************************************
1343 *
1344 * DdeAddData (USER32.@)
1345 */
1346 HDDEDATA WINAPI DdeAddData(HDDEDATA hData, LPBYTE pSrc, DWORD cb, DWORD cbOff)
1347 {
1348 DWORD old_sz, new_sz;
1349 LPBYTE pDst;
1350
1351 TRACE("(%p,%p,cb %d, cbOff %d)\n", hData, pSrc, cb, cbOff);
1352
1353 pDst = DdeAccessData(hData, &old_sz);
1354 if (!pDst) return 0;
1355
1356 new_sz = cb + cbOff;
1357 if (new_sz > old_sz)
1358 {
1359 DdeUnaccessData(hData);
1360 hData = GlobalReAlloc(hData, new_sz + sizeof(DDE_DATAHANDLE_HEAD),
1361 GMEM_MOVEABLE | GMEM_DDESHARE);
1362 pDst = DdeAccessData(hData, &old_sz);
1363 }
1364
1365 if (!pDst) return 0;
1366
1367 memcpy(pDst + cbOff, pSrc, cb);
1368 DdeUnaccessData(hData);
1369 return hData;
1370 }
1371
1372 /******************************************************************************
1373 * DdeGetData [USER32.@] Copies data from DDE object to local buffer
1374 *
1375 *
1376 * PARAMS
1377 * hData [I] Handle to DDE object
1378 * pDst [I] Pointer to destination buffer
1379 * cbMax [I] Amount of data to copy
1380 * cbOff [I] Offset to beginning of data
1381 *
1382 * RETURNS
1383 * Size of memory object associated with handle
1384 */
1385 DWORD WINAPI DdeGetData(HDDEDATA hData, LPBYTE pDst, DWORD cbMax, DWORD cbOff)
1386 {
1387 DWORD dwSize, dwRet;
1388 LPBYTE pByte;
1389
1390 TRACE("(%p,%p,%d,%d)\n", hData, pDst, cbMax, cbOff);
1391
1392 pByte = DdeAccessData(hData, &dwSize);
1393
1394 if (pByte)
1395 {
1396 if (!pDst)
1397 {
1398 dwRet = dwSize;
1399 }
1400 else if (cbOff + cbMax < dwSize)
1401 {
1402 dwRet = cbMax;
1403 }
1404 else if (cbOff < dwSize)
1405 {
1406 dwRet = dwSize - cbOff;
1407 }
1408 else
1409 {
1410 dwRet = 0;
1411 }
1412 if (pDst && dwRet != 0)
1413 {
1414 memcpy(pDst, pByte + cbOff, dwRet);
1415 }
1416 DdeUnaccessData(hData);
1417 }
1418 else
1419 {
1420 dwRet = 0;
1421 }
1422 return dwRet;
1423 }
1424
1425 /*****************************************************************
1426 * DdeAccessData (USER32.@)
1427 */
1428 LPBYTE WINAPI DdeAccessData(HDDEDATA hData, LPDWORD pcbDataSize)
1429 {
1430 HGLOBAL hMem = hData;
1431 DDE_DATAHANDLE_HEAD* pDdh;
1432
1433 TRACE("(%p,%p)\n", hData, pcbDataSize);
1434
1435 pDdh = GlobalLock(hMem);
1436 if (pDdh == NULL)
1437 {
1438 ERR("Failed on GlobalLock(%p)\n", hMem);
1439 return 0;
1440 }
1441
1442 if (pcbDataSize != NULL)
1443 {
1444 *pcbDataSize = GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD);
1445 }
1446 TRACE("=> %p (%lu) fmt %04x\n", pDdh + 1, GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD), pDdh->cfFormat);
1447 return (LPBYTE)(pDdh + 1);
1448 }
1449
1450 /*****************************************************************
1451 * DdeUnaccessData (USER32.@)
1452 */
1453 BOOL WINAPI DdeUnaccessData(HDDEDATA hData)
1454 {
1455 HGLOBAL hMem = hData;
1456
1457 TRACE("(%p)\n", hData);
1458
1459 GlobalUnlock(hMem);
1460
1461 return TRUE;
1462 }
1463
1464 /*****************************************************************
1465 * DdeFreeDataHandle (USER32.@)
1466 */
1467 BOOL WINAPI DdeFreeDataHandle(HDDEDATA hData)
1468 {
1469 TRACE("(%p)\n", hData);
1470 return GlobalFree(hData) == 0;
1471 }
1472
1473 /******************************************************************
1474 * WDML_IsAppOwned
1475 *
1476 *
1477 */
1478 BOOL WDML_IsAppOwned(HDDEDATA hData)
1479 {
1480 DDE_DATAHANDLE_HEAD* pDdh;
1481 BOOL ret = FALSE;
1482
1483 pDdh = GlobalLock(hData);
1484 if (pDdh != NULL)
1485 {
1486 ret = pDdh->bAppOwned;
1487 GlobalUnlock(hData);
1488 }
1489 return ret;
1490 }
1491
1492 /* ================================================================
1493 *
1494 * Global <=> Data handle management
1495 *
1496 * ================================================================ */
1497
1498 /* Note: we use a DDEDATA, but layout of DDEDATA, DDEADVISE and DDEPOKE structures is similar:
1499 * offset size
1500 * (bytes) (bits) comment
1501 * 0 16 bit fields for options (release, ackreq, response...)
1502 * 2 16 clipboard format
1503 * 4 ? data to be used
1504 */
1505 HDDEDATA WDML_Global2DataHandle(WDML_CONV* pConv, HGLOBAL hMem, WINE_DDEHEAD* p)
1506 {
1507 DDEDATA* pDd;
1508 HDDEDATA ret = 0;
1509 DWORD size;
1510
1511 if (hMem)
1512 {
1513 pDd = GlobalLock(hMem);
1514 size = GlobalSize(hMem) - sizeof(WINE_DDEHEAD);
1515 if (pDd)
1516 {
1517 if (p) memcpy(p, pDd, sizeof(WINE_DDEHEAD));
1518 switch (pDd->cfFormat)
1519 {
1520 default:
1521 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1522 pDd->cfFormat, hMem);
1523 /* fall thru */
1524 case 0:
1525 case CF_TEXT:
1526 ret = DdeCreateDataHandle(pConv->instance->instanceID, pDd->Value, size, 0, 0, pDd->cfFormat, 0);
1527 break;
1528 case CF_BITMAP:
1529 if (size >= sizeof(BITMAP))
1530 {
1531 BITMAP* bmp = (BITMAP*)pDd->Value;
1532 int count = bmp->bmWidthBytes * bmp->bmHeight * bmp->bmPlanes;
1533 if (size >= sizeof(BITMAP) + count)
1534 {
1535 HBITMAP hbmp;
1536
1537 if ((hbmp = CreateBitmap(bmp->bmWidth, bmp->bmHeight,
1538 bmp->bmPlanes, bmp->bmBitsPixel,
1539 pDd->Value + sizeof(BITMAP))))
1540 {
1541 ret = DdeCreateDataHandle(pConv->instance->instanceID, (LPBYTE)&hbmp, sizeof(hbmp),
1542 0, 0, CF_BITMAP, 0);
1543 }
1544 else ERR("Can't create bmp\n");
1545 }
1546 else
1547 {
1548 ERR("Wrong count: %u / %d\n", size, count);
1549 }
1550 } else ERR("No bitmap header\n");
1551 break;
1552 }
1553 GlobalUnlock(hMem);
1554 }
1555 }
1556 return ret;
1557 }
1558
1559 /******************************************************************
1560 * WDML_DataHandle2Global
1561 *
1562 *
1563 */
1564 HGLOBAL WDML_DataHandle2Global(HDDEDATA hDdeData, BOOL fResponse, BOOL fRelease,
1565 BOOL fDeferUpd, BOOL fAckReq)
1566 {
1567 DDE_DATAHANDLE_HEAD* pDdh;
1568 DWORD dwSize;
1569 HGLOBAL hMem = 0;
1570
1571 dwSize = GlobalSize(hDdeData) - sizeof(DDE_DATAHANDLE_HEAD);
1572 pDdh = GlobalLock(hDdeData);
1573 if (dwSize && pDdh)
1574 {
1575 WINE_DDEHEAD* wdh = NULL;
1576
1577 switch (pDdh->cfFormat)
1578 {
1579 default:
1580 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1581 pDdh->cfFormat, hDdeData);
1582 /* fall thru */
1583 case 0:
1584 case CF_TEXT:
1585 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, sizeof(WINE_DDEHEAD) + dwSize);
1586 if (hMem && (wdh = GlobalLock(hMem)))
1587 {
1588 memcpy(wdh + 1, pDdh + 1, dwSize);
1589 }
1590 break;
1591 case CF_BITMAP:
1592 if (dwSize >= sizeof(HBITMAP))
1593 {
1594 BITMAP bmp;
1595 DWORD count;
1596 HBITMAP hbmp = *(HBITMAP*)(pDdh + 1);
1597
1598 if (GetObjectW(hbmp, sizeof(bmp), &bmp))
1599 {
1600 count = bmp.bmWidthBytes * bmp.bmHeight;
1601 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE,
1602 sizeof(WINE_DDEHEAD) + sizeof(bmp) + count);
1603 if (hMem && (wdh = GlobalLock(hMem)))
1604 {
1605 memcpy(wdh + 1, &bmp, sizeof(bmp));
1606 GetBitmapBits(hbmp, count, ((char*)(wdh + 1)) + sizeof(bmp));
1607 }
1608 }
1609 }
1610 break;
1611 }
1612 if (wdh)
1613 {
1614 wdh->unused = 0;
1615 wdh->fResponse = fResponse;
1616 wdh->fRelease = fRelease;
1617 wdh->fDeferUpd = fDeferUpd;
1618 wdh->fAckReq = fAckReq;
1619 wdh->cfFormat = pDdh->cfFormat;
1620 GlobalUnlock(hMem);
1621 }
1622 GlobalUnlock(hDdeData);
1623 }
1624
1625 return hMem;
1626 }
1627
1628 /* ================================================================
1629 *
1630 * Server management
1631 *
1632 * ================================================================ */
1633
1634 /******************************************************************
1635 * WDML_AddServer
1636 *
1637 *
1638 */
1639 WDML_SERVER* WDML_AddServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1640 {
1641 static const WCHAR fmtW[] = {'%','s','(','0','x','%','*','x',')',0};
1642 WDML_SERVER* pServer;
1643 WCHAR buf1[256];
1644 WCHAR buf2[256];
1645
1646 pServer = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_SERVER));
1647 if (pServer == NULL) return NULL;
1648
1649 pServer->hszService = hszService;
1650 WDML_IncHSZ(pInstance, hszService);
1651
1652 DdeQueryStringW(pInstance->instanceID, hszService, buf1, 256, CP_WINUNICODE);
1653 snprintfW(buf2, 256, fmtW, buf1, 2*sizeof(ULONG_PTR), GetCurrentProcessId());
1654 pServer->hszServiceSpec = DdeCreateStringHandleW(pInstance->instanceID, buf2, CP_WINUNICODE);
1655
1656 pServer->atomService = WDML_MakeAtomFromHsz(pServer->hszService);
1657 pServer->atomServiceSpec = WDML_MakeAtomFromHsz(pServer->hszServiceSpec);
1658
1659 pServer->filterOn = TRUE;
1660
1661 pServer->next = pInstance->servers;
1662 pInstance->servers = pServer;
1663 return pServer;
1664 }
1665
1666 /******************************************************************
1667 * WDML_RemoveServer
1668 *
1669 *
1670 */
1671 void WDML_RemoveServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1672 {
1673 WDML_SERVER* pPrev = NULL;
1674 WDML_SERVER* pServer = NULL;
1675 WDML_CONV* pConv;
1676 WDML_CONV* pConvNext;
1677
1678 pServer = pInstance->servers;
1679
1680 while (pServer != NULL)
1681 {
1682 if (DdeCmpStringHandles(pServer->hszService, hszService) == 0)
1683 {
1684 WDML_BroadcastDDEWindows(WDML_szEventClass, WM_WDML_UNREGISTER,
1685 pServer->atomService, pServer->atomServiceSpec);
1686 /* terminate all conversations for given topic */
1687 for (pConv = pInstance->convs[WDML_SERVER_SIDE]; pConv != NULL; pConv = pConvNext)
1688 {
1689 pConvNext = pConv->next;
1690 if (DdeCmpStringHandles(pConv->hszService, hszService) == 0)
1691 {
1692 HWND client = pConv->hwndClient, server = pConv->hwndServer;
1693 WDML_RemoveConv(pConv, WDML_SERVER_SIDE);
1694 /* don't care about return code (whether client window is present or not) */
1695 PostMessageW(client, WM_DDE_TERMINATE, (WPARAM)server, 0);
1696 }
1697 }
1698 if (pServer == pInstance->servers)
1699 {
1700 pInstance->servers = pServer->next;
1701 }
1702 else
1703 {
1704 pPrev->next = pServer->next;
1705 }
1706
1707 DestroyWindow(pServer->hwndServer);
1708 WDML_DecHSZ(pInstance, pServer->hszServiceSpec);
1709 WDML_DecHSZ(pInstance, pServer->hszService);
1710
1711 GlobalDeleteAtom(pServer->atomService);
1712 GlobalDeleteAtom(pServer->atomServiceSpec);
1713
1714 HeapFree(GetProcessHeap(), 0, pServer);
1715 break;
1716 }
1717
1718 pPrev = pServer;
1719 pServer = pServer->next;
1720 }
1721 }
1722
1723 /*****************************************************************************
1724 * WDML_FindServer
1725 *
1726 * generic routine to return a pointer to the relevant ServiceNode
1727 * for a given service name, or NULL if the entry does not exist
1728 *
1729 */
1730 WDML_SERVER* WDML_FindServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1731 {
1732 WDML_SERVER* pServer;
1733
1734 for (pServer = pInstance->servers; pServer != NULL; pServer = pServer->next)
1735 {
1736 if (hszService == pServer->hszService)
1737 {
1738 return pServer;
1739 }
1740 }
1741 TRACE("Service name missing\n");
1742 return NULL;
1743 }
1744
1745 /* ================================================================
1746 *
1747 * Conversation management
1748 *
1749 * ================================================================ */
1750
1751 /******************************************************************
1752 * WDML_AddConv
1753 *
1754 *
1755 */
1756 WDML_CONV* WDML_AddConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1757 HSZ hszService, HSZ hszTopic, HWND hwndClient, HWND hwndServer)
1758 {
1759 WDML_CONV* pConv;
1760
1761 /* no conversation yet, add it */
1762 pConv = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_CONV));
1763 if (!pConv) return NULL;
1764
1765 pConv->instance = pInstance;
1766 WDML_IncHSZ(pInstance, pConv->hszService = hszService);
1767 WDML_IncHSZ(pInstance, pConv->hszTopic = hszTopic);
1768 pConv->magic = WDML_CONV_MAGIC;
1769 pConv->hwndServer = hwndServer;
1770 pConv->hwndClient = hwndClient;
1771 pConv->transactions = NULL;
1772 pConv->hUser = 0;
1773 pConv->wStatus = (side == WDML_CLIENT_SIDE) ? ST_CLIENT : 0L;
1774 pConv->wStatus |= pInstance->wStatus;
1775 /* check if both side of the conversation are of the same instance */
1776 if (GetWindowThreadProcessId(hwndClient, NULL) == GetWindowThreadProcessId(hwndServer, NULL) &&
1777 WDML_GetInstanceFromWnd(hwndClient) == WDML_GetInstanceFromWnd(hwndServer))
1778 {
1779 pConv->wStatus |= ST_ISSELF;
1780 }
1781 pConv->wConvst = XST_NULL;
1782
1783 pConv->next = pInstance->convs[side];
1784 pInstance->convs[side] = pConv;
1785
1786 TRACE("pConv->wStatus %04x pInstance(%p)\n", pConv->wStatus, pInstance);
1787
1788 return pConv;
1789 }
1790
1791 /******************************************************************
1792 * WDML_FindConv
1793 *
1794 *
1795 */
1796 WDML_CONV* WDML_FindConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1797 HSZ hszService, HSZ hszTopic)
1798 {
1799 WDML_CONV* pCurrent = NULL;
1800
1801 for (pCurrent = pInstance->convs[side]; pCurrent != NULL; pCurrent = pCurrent->next)
1802 {
1803 if (DdeCmpStringHandles(pCurrent->hszService, hszService) == 0 &&
1804 DdeCmpStringHandles(pCurrent->hszTopic, hszTopic) == 0)
1805 {
1806 return pCurrent;
1807 }
1808
1809 }
1810 return NULL;
1811 }
1812
1813 /******************************************************************
1814 * WDML_RemoveConv
1815 *
1816 *
1817 */
1818 void WDML_RemoveConv(WDML_CONV* pRef, WDML_SIDE side)
1819 {
1820 WDML_CONV* pPrev = NULL;
1821 WDML_CONV* pCurrent;
1822 WDML_XACT* pXAct;
1823 WDML_XACT* pXActNext;
1824 HWND hWnd;
1825
1826 if (!pRef)
1827 return;
1828
1829 /* remove any pending transaction */
1830 for (pXAct = pRef->transactions; pXAct != NULL; pXAct = pXActNext)
1831 {
1832 pXActNext = pXAct->next;
1833 WDML_FreeTransaction(pRef->instance, pXAct, TRUE);
1834 }
1835
1836 WDML_RemoveAllLinks(pRef->instance, pRef, side);
1837
1838 /* FIXME: should we keep the window around ? it seems so (at least on client side
1839 * to let QueryConvInfo work after conv termination, but also to implement
1840 * DdeReconnect...
1841 */
1842 /* destroy conversation window, but first remove pConv from hWnd.
1843 * this would help the wndProc do appropriate handling upon a WM_DESTROY message
1844 */
1845 hWnd = (side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer;
1846 SetWindowLongPtrW(hWnd, GWL_WDML_CONVERSATION, 0);
1847
1848 DestroyWindow((side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer);
1849
1850 WDML_DecHSZ(pRef->instance, pRef->hszService);
1851 WDML_DecHSZ(pRef->instance, pRef->hszTopic);
1852
1853 for (pCurrent = pRef->instance->convs[side]; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
1854 {
1855 if (pCurrent == pRef)
1856 {
1857 if (pCurrent == pRef->instance->convs[side])
1858 {
1859 pRef->instance->convs[side] = pCurrent->next;
1860 }
1861 else
1862 {
1863 pPrev->next = pCurrent->next;
1864 }
1865 pCurrent->magic = 0;
1866 HeapFree(GetProcessHeap(), 0, pCurrent);
1867 break;
1868 }
1869 }
1870 }
1871
1872 /******************************************************************
1873 * WDML_EnableCallback
1874 */
1875 static BOOL WDML_EnableCallback(WDML_CONV *pConv, UINT wCmd)
1876 {
1877 if (wCmd == EC_DISABLE)
1878 {
1879 pConv->wStatus |= ST_BLOCKED;
1880 TRACE("EC_DISABLE: conv %p status flags %04x\n", pConv, pConv->wStatus);
1881 return TRUE;
1882 }
1883
1884 if (wCmd == EC_QUERYWAITING)
1885 return pConv->transactions ? TRUE : FALSE;
1886
1887 if (wCmd != EC_ENABLEALL && wCmd != EC_ENABLEONE)
1888 {
1889 FIXME("Unknown command code %04x\n", wCmd);
1890 return FALSE;
1891 }
1892
1893 if (wCmd == EC_ENABLEALL)
1894 {
1895 pConv->wStatus &= ~ST_BLOCKED;
1896 TRACE("EC_ENABLEALL: conv %p status flags %04x\n", pConv, pConv->wStatus);
1897 }
1898
1899 while (pConv->transactions)
1900 {
1901 WDML_XACT *pXAct = pConv->transactions;
1902
1903 if (pConv->wStatus & ST_CLIENT)
1904 {
1905 /* transaction should be in the queue until handled */
1906 WDML_ClientHandle(pConv, pXAct, 0, NULL);
1907 WDML_UnQueueTransaction(pConv, pXAct);
1908 }
1909 else
1910 {
1911 /* transaction should be removed from the queue before handling */
1912 WDML_UnQueueTransaction(pConv, pXAct);
1913 WDML_ServerHandle(pConv, pXAct);
1914 }
1915
1916 WDML_FreeTransaction(pConv->instance, pXAct, TRUE);
1917
1918 if (wCmd == EC_ENABLEONE) break;
1919 }
1920 return TRUE;
1921 }
1922
1923 /*****************************************************************
1924 * DdeEnableCallback (USER32.@)
1925 */
1926 BOOL WINAPI DdeEnableCallback(DWORD idInst, HCONV hConv, UINT wCmd)
1927 {
1928 BOOL ret = FALSE;
1929 WDML_CONV *pConv;
1930
1931 TRACE("(%d, %p, %04x)\n", idInst, hConv, wCmd);
1932
1933 if (hConv)
1934 {
1935 pConv = WDML_GetConv(hConv, TRUE);
1936
1937 if (pConv && pConv->instance->instanceID == idInst)
1938 ret = WDML_EnableCallback(pConv, wCmd);
1939 }
1940 else
1941 {
1942 WDML_INSTANCE *pInstance = WDML_GetInstance(idInst);
1943
1944 if (!pInstance)
1945 return FALSE;
1946
1947 TRACE("adding flags %04x to instance %p\n", wCmd, pInstance);
1948 pInstance->wStatus |= wCmd;
1949
1950 if (wCmd == EC_DISABLE)
1951 {
1952 pInstance->wStatus |= ST_BLOCKED;
1953 TRACE("EC_DISABLE: inst %p status flags %04x\n", pInstance, pInstance->wStatus);
1954 }
1955 else if (wCmd == EC_ENABLEALL)
1956 {
1957 pInstance->wStatus &= ~ST_BLOCKED;
1958 TRACE("EC_ENABLEALL: inst %p status flags %04x\n", pInstance, pInstance->wStatus);
1959 }
1960
1961 ret = TRUE;
1962
1963 for (pConv = pInstance->convs[WDML_CLIENT_SIDE]; pConv != NULL; pConv = pConv->next)
1964 {
1965 ret = WDML_EnableCallback(pConv, wCmd);
1966 if (ret && wCmd == EC_QUERYWAITING) break;
1967 }
1968 }
1969
1970 return ret;
1971 }
1972
1973 /******************************************************************
1974 * WDML_GetConv
1975 *
1976 *
1977 */
1978 WDML_CONV* WDML_GetConv(HCONV hConv, BOOL checkConnected)
1979 {
1980 WDML_CONV* pConv = (WDML_CONV*)hConv;
1981
1982 /* FIXME: should do better checking */
1983 if (pConv == NULL || pConv->magic != WDML_CONV_MAGIC) return NULL;
1984
1985 if (!pConv->instance || pConv->instance->threadID != GetCurrentThreadId())
1986 {
1987 WARN("wrong thread ID\n");
1988 pConv->instance->lastError = DMLERR_INVALIDPARAMETER; /* FIXME: check */
1989 return NULL;
1990 }
1991
1992 if (checkConnected && !(pConv->wStatus & ST_CONNECTED))
1993 {
1994 WARN("found conv but ain't connected\n");
1995 pConv->instance->lastError = DMLERR_NO_CONV_ESTABLISHED;
1996 return NULL;
1997 }
1998
1999 return pConv;
2000 }
2001
2002 /******************************************************************
2003 * WDML_GetConvFromWnd
2004 *
2005 *
2006 */
2007 WDML_CONV* WDML_GetConvFromWnd(HWND hWnd)
2008 {
2009 return (WDML_CONV*)GetWindowLongPtrW(hWnd, GWL_WDML_CONVERSATION);
2010 }
2011
2012 /******************************************************************
2013 * WDML_PostAck
2014 *
2015 *
2016 */
2017 BOOL WDML_PostAck(WDML_CONV* pConv, WDML_SIDE side, WORD appRetCode,
2018 BOOL fBusy, BOOL fAck, UINT_PTR pmt, LPARAM lParam, UINT oldMsg)
2019 {
2020 DDEACK ddeAck;
2021 HWND from, to;
2022
2023 if (side == WDML_SERVER_SIDE)
2024 {
2025 from = pConv->hwndServer;
2026 to = pConv->hwndClient;
2027 }
2028 else
2029 {
2030 to = pConv->hwndServer;
2031 from = pConv->hwndClient;
2032 }
2033
2034 ddeAck.bAppReturnCode = appRetCode;
2035 ddeAck.reserved = 0;
2036 ddeAck.fBusy = fBusy;
2037 ddeAck.fAck = fAck;
2038
2039 TRACE("Posting a %s ack\n", ddeAck.fAck ? "positive" : "negative");
2040
2041 lParam = (lParam) ? ReuseDDElParam(lParam, oldMsg, WM_DDE_ACK, *(WORD*)&ddeAck, pmt) :
2042 PackDDElParam(WM_DDE_ACK, *(WORD*)&ddeAck, pmt);
2043 if (!PostMessageW(to, WM_DDE_ACK, (WPARAM)from, lParam))
2044 {
2045 pConv->wStatus &= ~ST_CONNECTED;
2046 pConv->instance->lastError = DMLERR_POSTMSG_FAILED;
2047 FreeDDElParam(WM_DDE_ACK, lParam);
2048 return FALSE;
2049 }
2050 return TRUE;
2051 }
2052
2053 /*****************************************************************
2054 * DdeSetUserHandle (USER32.@)
2055 */
2056 BOOL WINAPI DdeSetUserHandle(HCONV hConv, DWORD id, DWORD hUser)
2057 {
2058 WDML_CONV* pConv;
2059
2060 pConv = WDML_GetConv(hConv, FALSE);
2061 if (pConv == NULL)
2062 return FALSE;
2063
2064 if (id == QID_SYNC)
2065 {
2066 pConv->hUser = hUser;
2067 }
2068 else
2069 {
2070 WDML_XACT* pXAct;
2071
2072 pXAct = WDML_FindTransaction(pConv, id);
2073 if (pXAct)
2074 {
2075 pXAct->hUser = hUser;
2076 }
2077 else
2078 {
2079 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2080 return FALSE;
2081 }
2082 }
2083 return TRUE;
2084 }
2085
2086 /******************************************************************
2087 * WDML_GetLocalConvInfo
2088 *
2089 *
2090 */
2091 static BOOL WDML_GetLocalConvInfo(WDML_CONV* pConv, CONVINFO* ci, DWORD id)
2092 {
2093 BOOL ret = TRUE;
2094 WDML_LINK* pLink;
2095 WDML_SIDE side;
2096
2097 ci->hConvPartner = (pConv->wStatus & ST_ISLOCAL) ? (HCONV)((ULONG_PTR)pConv | 1) : 0;
2098 ci->hszSvcPartner = pConv->hszService;
2099 ci->hszServiceReq = pConv->hszService; /* FIXME: they shouldn't be the same, should they ? */
2100 ci->hszTopic = pConv->hszTopic;
2101 ci->wStatus = pConv->wStatus;
2102
2103 side = (pConv->wStatus & ST_CLIENT) ? WDML_CLIENT_SIDE : WDML_SERVER_SIDE;
2104
2105 for (pLink = pConv->instance->links[side]; pLink != NULL; pLink = pLink->next)
2106 {
2107 if (pLink->hConv == (HCONV)pConv)
2108 {
2109 ci->wStatus |= ST_ADVISE;
2110 break;
2111 }
2112 }
2113
2114 /* FIXME: non handled status flags:
2115 ST_BLOCKED
2116 ST_BLOCKNEXT
2117 ST_INLIST
2118 */
2119
2120 ci->wConvst = pConv->wConvst; /* FIXME */
2121
2122 ci->wLastError = 0; /* FIXME: note it's not the instance last error */
2123 ci->hConvList = 0;
2124 ci->ConvCtxt = pConv->convContext;
2125 if (ci->wStatus & ST_CLIENT)
2126 {
2127 ci->hwnd = pConv->hwndClient;
2128 ci->hwndPartner = pConv->hwndServer;
2129 }
2130 else
2131 {
2132 ci->hwnd = pConv->hwndServer;
2133 ci->hwndPartner = pConv->hwndClient;
2134 }
2135 if (id == QID_SYNC)
2136 {
2137 ci->hUser = pConv->hUser;
2138 ci->hszItem = 0;
2139 ci->wFmt = 0;
2140 ci->wType = 0;
2141 }
2142 else
2143 {
2144 WDML_XACT* pXAct;
2145
2146 pXAct = WDML_FindTransaction(pConv, id);
2147 if (pXAct)
2148 {
2149 ci->hUser = pXAct->hUser;
2150 ci->hszItem = pXAct->hszItem;
2151 ci->wFmt = pXAct->wFmt;
2152 ci->wType = pXAct->wType;
2153 }
2154 else
2155 {
2156 ret = 0;
2157 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2158 }
2159 }
2160 return ret;
2161 }
2162
2163 /******************************************************************
2164 * DdeQueryConvInfo (USER32.@)
2165 *
2166 * FIXME: Set last DDE error on failure.
2167 */
2168 UINT WINAPI DdeQueryConvInfo(HCONV hConv, DWORD id, PCONVINFO lpConvInfo)
2169 {
2170 UINT ret = lpConvInfo->cb;
2171 CONVINFO ci;
2172 WDML_CONV* pConv;
2173
2174 TRACE("(%p,%x,%p)\n", hConv, id, lpConvInfo);
2175
2176 if (!hConv)
2177 {
2178 FIXME("hConv is NULL\n");
2179 return 0;
2180 }
2181
2182 pConv = WDML_GetConv(hConv, FALSE);
2183 if (pConv != NULL)
2184 {
2185 if (!WDML_GetLocalConvInfo(pConv, &ci, id))
2186 ret = 0;
2187 }
2188 else
2189 {
2190 if ((ULONG_PTR)hConv & 1)
2191 {
2192 pConv = WDML_GetConv((HCONV)((ULONG_PTR)hConv & ~1), FALSE);
2193 if (pConv != NULL)
2194 FIXME("Request on remote conversation information is not implemented yet\n");
2195 }
2196 ret = 0;
2197 }
2198
2199 if (ret != 0)
2200 memcpy(lpConvInfo, &ci, min((size_t)lpConvInfo->cb, sizeof(ci)));
2201 return ret;
2202 }
2203
2204 /* ================================================================
2205 *
2206 * Link (hot & warm) management
2207 *
2208 * ================================================================ */
2209
2210 /******************************************************************
2211 * WDML_AddLink
2212 *
2213 *
2214 */
2215 void WDML_AddLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2216 UINT wType, HSZ hszItem, UINT wFmt)
2217 {
2218 WDML_LINK* pLink;
2219
2220 pLink = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_LINK));
2221 if (pLink == NULL)
2222 {
2223 ERR("OOM\n");
2224 return;
2225 }
2226
2227 pLink->hConv = hConv;
2228 pLink->transactionType = wType;
2229 WDML_IncHSZ(pInstance, pLink->hszItem = hszItem);
2230 pLink->uFmt = wFmt;
2231 pLink->next = pInstance->links[side];
2232 pInstance->links[side] = pLink;
2233 }
2234
2235 /******************************************************************
2236 * WDML_RemoveLink
2237 *
2238 *
2239 */
2240 void WDML_RemoveLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2241 HSZ hszItem, UINT uFmt)
2242 {
2243 WDML_LINK* pPrev = NULL;
2244 WDML_LINK* pCurrent = NULL;
2245
2246 pCurrent = pInstance->links[side];
2247
2248 while (pCurrent != NULL)
2249 {
2250 if (pCurrent->hConv == hConv &&
2251 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2252 pCurrent->uFmt == uFmt)
2253 {
2254 if (pCurrent == pInstance->links[side])
2255 {
2256 pInstance->links[side] = pCurrent->next;
2257 }
2258 else
2259 {
2260 pPrev->next = pCurrent->next;
2261 }
2262
2263 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2264 HeapFree(GetProcessHeap(), 0, pCurrent);
2265 break;
2266 }
2267
2268 pPrev = pCurrent;
2269 pCurrent = pCurrent->next;
2270 }
2271 }
2272
2273 /* this function is called to remove all links related to the conv.
2274 It should be called from both client and server when terminating
2275 the conversation.
2276 */
2277 /******************************************************************
2278 * WDML_RemoveAllLinks
2279 *
2280 *
2281 */
2282 void WDML_RemoveAllLinks(WDML_INSTANCE* pInstance, WDML_CONV* pConv, WDML_SIDE side)
2283 {
2284 WDML_LINK* pPrev = NULL;
2285 WDML_LINK* pCurrent = NULL;
2286 WDML_LINK* pNext = NULL;
2287
2288 pCurrent = pInstance->links[side];
2289
2290 while (pCurrent != NULL)
2291 {
2292 if (pCurrent->hConv == (HCONV)pConv)
2293 {
2294 if (pCurrent == pInstance->links[side])
2295 {
2296 pInstance->links[side] = pCurrent->next;
2297 pNext = pCurrent->next;
2298 }
2299 else
2300 {
2301 pPrev->next = pCurrent->next;
2302 pNext = pCurrent->next;
2303 }
2304
2305 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2306
2307 HeapFree(GetProcessHeap(), 0, pCurrent);
2308 pCurrent = NULL;
2309 }
2310
2311 if (pCurrent)
2312 {
2313 pPrev = pCurrent;
2314 pCurrent = pCurrent->next;
2315 }
2316 else
2317 {
2318 pCurrent = pNext;
2319 }
2320 }
2321 }
2322
2323 /******************************************************************
2324 * WDML_FindLink
2325 *
2326 *
2327 */
2328 WDML_LINK* WDML_FindLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2329 HSZ hszItem, BOOL use_fmt, UINT uFmt)
2330 {
2331 WDML_LINK* pCurrent = NULL;
2332
2333 for (pCurrent = pInstance->links[side]; pCurrent != NULL; pCurrent = pCurrent->next)
2334 {
2335 /* we don't need to check for transaction type as it can be altered */
2336
2337 if (pCurrent->hConv == hConv &&
2338 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2339 (!use_fmt || pCurrent->uFmt == uFmt))
2340 {
2341 break;
2342 }
2343
2344 }
2345
2346 return pCurrent;
2347 }
2348
2349 /* ================================================================
2350 *
2351 * Transaction management
2352 *
2353 * ================================================================ */
2354
2355 /******************************************************************
2356 * WDML_AllocTransaction
2357 *
2358 * Alloc a transaction structure for handling the message ddeMsg
2359 */
2360 WDML_XACT* WDML_AllocTransaction(WDML_INSTANCE* pInstance, UINT ddeMsg,
2361 UINT wFmt, HSZ hszItem)
2362 {
2363 WDML_XACT* pXAct;
2364 static WORD tid = 1; /* FIXME: wrap around */
2365
2366 pXAct = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_XACT));
2367 if (!pXAct)
2368 {
2369 pInstance->lastError = DMLERR_MEMORY_ERROR;
2370 return NULL;
2371 }
2372
2373 pXAct->xActID = tid++;
2374 pXAct->ddeMsg = ddeMsg;
2375 pXAct->hDdeData = 0;
2376 pXAct->hUser = 0;
2377 pXAct->next = NULL;
2378 pXAct->wType = 0;
2379 pXAct->wFmt = wFmt;
2380 if ((pXAct->hszItem = hszItem)) WDML_IncHSZ(pInstance, pXAct->hszItem);
2381 pXAct->atom = 0;
2382 pXAct->hMem = 0;
2383 pXAct->lParam = 0;
2384
2385 return pXAct;
2386 }
2387
2388 /******************************************************************
2389 * WDML_QueueTransaction
2390 *
2391 * Adds a transaction to the list of transaction
2392 */
2393 void WDML_QueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2394 {
2395 WDML_XACT** pt;
2396
2397 /* advance to last in queue */
2398 for (pt = &pConv->transactions; *pt != NULL; pt = &(*pt)->next);
2399 *pt = pXAct;
2400 }
2401
2402 /******************************************************************
2403 * WDML_UnQueueTransaction
2404 *
2405 *
2406 */
2407 BOOL WDML_UnQueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2408 {
2409 WDML_XACT** pt;
2410
2411 for (pt = &pConv->transactions; *pt; pt = &(*pt)->next)
2412 {
2413 if (*pt == pXAct)
2414 {
2415 *pt = pXAct->next;
2416 return TRUE;
2417 }
2418 }
2419 return FALSE;
2420 }
2421
2422 /******************************************************************
2423 * WDML_FreeTransaction
2424 *
2425 *
2426 */
2427 void WDML_FreeTransaction(WDML_INSTANCE* pInstance, WDML_XACT* pXAct, BOOL doFreePmt)
2428 {
2429 /* free pmt(s) in pXAct too. check against one for not deleting TRUE return values */
2430 if (doFreePmt && (ULONG_PTR)pXAct->hMem > 1)
2431 {
2432 GlobalFree(pXAct->hMem);
2433 }
2434 if (pXAct->hszItem) WDML_DecHSZ(pInstance, pXAct->hszItem);
2435
2436 HeapFree(GetProcessHeap(), 0, pXAct);
2437 }
2438
2439 /******************************************************************
2440 * WDML_FindTransaction
2441 *
2442 *
2443 */
2444 WDML_XACT* WDML_FindTransaction(WDML_CONV* pConv, DWORD tid)
2445 {
2446 WDML_XACT* pXAct;
2447
2448 tid = HIWORD(tid);
2449 for (pXAct = pConv->transactions; pXAct; pXAct = pXAct->next)
2450 {
2451 if (pXAct->xActID == tid)
2452 break;
2453 }
2454 return pXAct;
2455 }
2456
2457 /* ================================================================
2458 *
2459 * Information broadcast across DDEML implementations
2460 *
2461 * ================================================================ */
2462
2463 struct tagWDML_BroadcastPmt
2464 {
2465 LPCWSTR clsName;
2466 UINT uMsg;
2467 WPARAM wParam;
2468 LPARAM lParam;
2469 };
2470
2471 /******************************************************************
2472 * WDML_BroadcastEnumProc
2473 *
2474 *
2475 */
2476 static BOOL CALLBACK WDML_BroadcastEnumProc(HWND hWnd, LPARAM lParam)
2477 {
2478 struct tagWDML_BroadcastPmt* s = (struct tagWDML_BroadcastPmt*)lParam;
2479 WCHAR buffer[128];
2480
2481 if (GetClassNameW(hWnd, buffer, 128) > 0 &&
2482 lstrcmpiW(buffer, s->clsName) == 0)
2483 {
2484 PostMessageW(hWnd, s->uMsg, s->wParam, s->lParam);
2485 }
2486 return TRUE;
2487 }
2488
2489 /******************************************************************
2490 * WDML_BroadcastDDEWindows
2491 *
2492 *
2493 */
2494 void WDML_BroadcastDDEWindows(LPCWSTR clsName, UINT uMsg, WPARAM wParam, LPARAM lParam)
2495 {
2496 struct tagWDML_BroadcastPmt s;
2497
2498 s.clsName = clsName;
2499 s.uMsg = uMsg;
2500 s.wParam = wParam;
2501 s.lParam = lParam;
2502 EnumWindows(WDML_BroadcastEnumProc, (LPARAM)&s);
2503 }
DirectPlay implementation for GSoC