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[wine/multimedia.git] / dlls / user32 / dde_misc.c
blobac4657e4118514e27965d3ee4a364510b3874a92
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->lastError = DMLERR_NO_ERROR;
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);
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);
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[%p] (%x %x %p %p %p %p %lx %lx)\n",
732 pInstance->callback, uType, uFmt,
733 hConv, hsz1, hsz2, hdata, dwData1, dwData2);
734 ret = pInstance->callback(uType, uFmt, hConv, hsz1, hsz2, hdata, dwData1, dwData2);
735 TRACE("done => %p\n", ret);
736 return ret;
737 }
738
739 /*****************************************************************************
740 * WDML_GetInstance
741 *
742 * generic routine to return a pointer to the relevant DDE_HANDLE_ENTRY
743 * for an instance Id, or NULL if the entry does not exist
744 *
745 */
746 WDML_INSTANCE* WDML_GetInstance(DWORD instId)
747 {
748 WDML_INSTANCE* pInstance;
749
750 EnterCriticalSection(&WDML_CritSect);
751
752 for (pInstance = WDML_InstanceList; pInstance != NULL; pInstance = pInstance->next)
753 {
754 if (pInstance->instanceID == instId)
755 {
756 if (GetCurrentThreadId() != pInstance->threadID)
757 {
758 FIXME("Tried to get instance from wrong thread\n");
759 continue;
760 }
761 break;
762 }
763 }
764
765 LeaveCriticalSection(&WDML_CritSect);
766
767 if (!pInstance)
768 WARN("Instance entry missing for id %04x\n", instId);
769 return pInstance;
770 }
771
772 /******************************************************************
773 * WDML_GetInstanceFromWnd
774 *
775 *
776 */
777 WDML_INSTANCE* WDML_GetInstanceFromWnd(HWND hWnd)
778 {
779 return (WDML_INSTANCE*)GetWindowLongPtrW(hWnd, GWL_WDML_INSTANCE);
780 }
781
782 /******************************************************************************
783 * DdeGetLastError [USER32.@] Gets most recent error code
784 *
785 * PARAMS
786 * idInst [I] Instance identifier
787 *
788 * RETURNS
789 * Last error code
790 */
791 UINT WINAPI DdeGetLastError(DWORD idInst)
792 {
793 DWORD error_code;
794 WDML_INSTANCE* pInstance;
795
796 /* First check instance
797 */
798 pInstance = WDML_GetInstance(idInst);
799 if (pInstance == NULL)
800 {
801 error_code = DMLERR_INVALIDPARAMETER;
802 }
803 else
804 {
805 error_code = pInstance->lastError;
806 pInstance->lastError = 0;
807 }
808
809 return error_code;
810 }
811
812 /******************************************************************
813 * WDML_SetAllLastError
814 *
815 *
816 */
817 static void WDML_SetAllLastError(DWORD lastError)
818 {
819 DWORD threadID;
820 WDML_INSTANCE* pInstance;
821 threadID = GetCurrentThreadId();
822 pInstance = WDML_InstanceList;
823 while (pInstance)
824 {
825 if (pInstance->threadID == threadID)
826 pInstance->lastError = lastError;
827 pInstance = pInstance->next;
828 }
829 }
830
831 /* ================================================================
832 *
833 * String management
834 *
835 * ================================================================ */
836
837
838 /******************************************************************
839 * WDML_FindNode
840 *
841 *
842 */
843 static HSZNode* WDML_FindNode(WDML_INSTANCE* pInstance, HSZ hsz)
844 {
845 HSZNode* pNode;
846
847 if (pInstance == NULL) return NULL;
848
849 for (pNode = pInstance->nodeList; pNode != NULL; pNode = pNode->next)
850 {
851 if (pNode->hsz == hsz) break;
852 }
853 if (!pNode) WARN("HSZ %p not found\n", hsz);
854 return pNode;
855 }
856
857 /******************************************************************
858 * WDML_MakeAtomFromHsz
859 *
860 * Creates a global atom from an existing HSZ
861 * Generally used before sending an HSZ as an atom to a remote app
862 */
863 ATOM WDML_MakeAtomFromHsz(HSZ hsz)
864 {
865 WCHAR nameBuffer[MAX_BUFFER_LEN];
866
867 if (GetAtomNameW(HSZ2ATOM(hsz), nameBuffer, MAX_BUFFER_LEN))
868 return GlobalAddAtomW(nameBuffer);
869 WARN("HSZ %p not found\n", hsz);
870 return 0;
871 }
872
873 /******************************************************************
874 * WDML_MakeHszFromAtom
875 *
876 * Creates a HSZ from an existing global atom
877 * Generally used while receiving a global atom and transforming it
878 * into an HSZ
879 */
880 HSZ WDML_MakeHszFromAtom(const WDML_INSTANCE* pInstance, ATOM atom)
881 {
882 WCHAR nameBuffer[MAX_BUFFER_LEN];
883
884 if (!atom) return NULL;
885
886 if (GlobalGetAtomNameW(atom, nameBuffer, MAX_BUFFER_LEN))
887 {
888 TRACE("%x => %s\n", atom, debugstr_w(nameBuffer));
889 return DdeCreateStringHandleW(pInstance->instanceID, nameBuffer, CP_WINUNICODE);
890 }
891 WARN("ATOM 0x%x not found\n", atom);
892 return 0;
893 }
894
895 /******************************************************************
896 * WDML_IncHSZ
897 *
898 *
899 */
900 BOOL WDML_IncHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
901 {
902 HSZNode* pNode;
903
904 pNode = WDML_FindNode(pInstance, hsz);
905 if (!pNode) return FALSE;
906
907 pNode->refCount++;
908 return TRUE;
909 }
910
911 /******************************************************************************
912 * WDML_DecHSZ (INTERNAL)
913 *
914 * Decrease the ref count of an HSZ. If it reaches 0, the node is removed from the list
915 * of HSZ nodes
916 * Returns -1 is the HSZ isn't found, otherwise it's the current (after --) of the ref count
917 */
918 BOOL WDML_DecHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
919 {
920 HSZNode* pPrev = NULL;
921 HSZNode* pCurrent;
922
923 for (pCurrent = pInstance->nodeList; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
924 {
925 /* If we found the node we were looking for and its ref count is one,
926 * we can remove it
927 */
928 if (pCurrent->hsz == hsz)
929 {
930 if (--pCurrent->refCount == 0)
931 {
932 if (pCurrent == pInstance->nodeList)
933 {
934 pInstance->nodeList = pCurrent->next;
935 }
936 else
937 {
938 pPrev->next = pCurrent->next;
939 }
940 HeapFree(GetProcessHeap(), 0, pCurrent);
941 DeleteAtom(HSZ2ATOM(hsz));
942 }
943 return TRUE;
944 }
945 }
946 WARN("HSZ %p not found\n", hsz);
947
948 return FALSE;
949 }
950
951 /******************************************************************************
952 * WDML_FreeAllHSZ (INTERNAL)
953 *
954 * Frees up all the strings still allocated in the list and
955 * remove all the nodes from the list of HSZ nodes.
956 */
957 void WDML_FreeAllHSZ(WDML_INSTANCE* pInstance)
958 {
959 /* Free any strings created in this instance.
960 */
961 while (pInstance->nodeList != NULL)
962 {
963 DdeFreeStringHandle(pInstance->instanceID, pInstance->nodeList->hsz);
964 }
965 }
966
967 /******************************************************************************
968 * InsertHSZNode (INTERNAL)
969 *
970 * Insert a node to the head of the list.
971 */
972 static void WDML_InsertHSZNode(WDML_INSTANCE* pInstance, HSZ hsz)
973 {
974 if (hsz != 0)
975 {
976 HSZNode* pNew = NULL;
977 /* Create a new node for this HSZ.
978 */
979 pNew = HeapAlloc(GetProcessHeap(), 0, sizeof(HSZNode));
980 if (pNew != NULL)
981 {
982 pNew->hsz = hsz;
983 pNew->next = pInstance->nodeList;
984 pNew->refCount = 1;
985 pInstance->nodeList = pNew;
986 }
987 else
988 {
989 ERR("Primary HSZ Node allocation failed - out of memory\n");
990 }
991 }
992 }
993
994 /******************************************************************
995 * WDML_QueryString
996 *
997 *
998 */
999 static int WDML_QueryString(WDML_INSTANCE* pInstance, HSZ hsz, LPVOID ptr, DWORD cchMax,
1000 int codepage)
1001 {
1002 WCHAR pString[MAX_BUFFER_LEN];
1003 int ret;
1004 /* If psz is null, we have to return only the length
1005 * of the string.
1006 */
1007 if (ptr == NULL)
1008 {
1009 ptr = pString;
1010 cchMax = MAX_BUFFER_LEN;
1011 }
1012
1013 /* if there is no input windows returns a NULL string */
1014 if (hsz == NULL)
1015 {
1016 CHAR *t_ptr = ptr;
1017 *t_ptr = '\0';
1018 return 1;
1019 }
1020
1021 switch (codepage)
1022 {
1023 case CP_WINANSI:
1024 ret = GetAtomNameA(HSZ2ATOM(hsz), ptr, cchMax);
1025 break;
1026 case CP_WINUNICODE:
1027 ret = GetAtomNameW(HSZ2ATOM(hsz), ptr, cchMax);
1028 break;
1029 default:
1030 ERR("Unknown code page %d\n", codepage);
1031 ret = 0;
1032 }
1033 return ret;
1034 }
1035
1036 /*****************************************************************
1037 * DdeQueryStringA [USER32.@]
1038 */
1039 DWORD WINAPI DdeQueryStringA(DWORD idInst, HSZ hsz, LPSTR psz, DWORD cchMax, INT iCodePage)
1040 {
1041 DWORD ret = 0;
1042 WDML_INSTANCE* pInstance;
1043
1044 TRACE("(%d, %p, %p, %d, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1045
1046 /* First check instance
1047 */
1048 pInstance = WDML_GetInstance(idInst);
1049 if (pInstance != NULL)
1050 {
1051 if (iCodePage == 0) iCodePage = CP_WINANSI;
1052 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1053 }
1054
1055 TRACE("returning %d (%s)\n", ret, debugstr_a(psz));
1056 return ret;
1057 }
1058
1059 /*****************************************************************
1060 * DdeQueryStringW [USER32.@]
1061 */
1062
1063 DWORD WINAPI DdeQueryStringW(DWORD idInst, HSZ hsz, LPWSTR psz, DWORD cchMax, INT iCodePage)
1064 {
1065 DWORD ret = 0;
1066 WDML_INSTANCE* pInstance;
1067
1068 TRACE("(%d, %p, %p, %d, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1069
1070 /* First check instance
1071 */
1072 pInstance = WDML_GetInstance(idInst);
1073 if (pInstance != NULL)
1074 {
1075 if (iCodePage == 0) iCodePage = CP_WINUNICODE;
1076 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1077 }
1078
1079 TRACE("returning %d (%s)\n", ret, debugstr_w(psz));
1080 return ret;
1081 }
1082
1083 /******************************************************************
1084 * DML_CreateString
1085 *
1086 *
1087 */
1088 static HSZ WDML_CreateString(WDML_INSTANCE* pInstance, LPCVOID ptr, int codepage)
1089 {
1090 HSZ hsz;
1091
1092 switch (codepage)
1093 {
1094 case CP_WINANSI:
1095 hsz = ATOM2HSZ(AddAtomA(ptr));
1096 TRACE("added atom %s with HSZ %p,\n", debugstr_a(ptr), hsz);
1097 break;
1098 case CP_WINUNICODE:
1099 hsz = ATOM2HSZ(AddAtomW(ptr));
1100 TRACE("added atom %s with HSZ %p,\n", debugstr_w(ptr), hsz);
1101 break;
1102 default:
1103 ERR("Unknown code page %d\n", codepage);
1104 return 0;
1105 }
1106 WDML_InsertHSZNode(pInstance, hsz);
1107 return hsz;
1108 }
1109
1110 /*****************************************************************
1111 * DdeCreateStringHandleA [USER32.@]
1112 *
1113 * See DdeCreateStringHandleW.
1114 */
1115 HSZ WINAPI DdeCreateStringHandleA(DWORD idInst, LPCSTR psz, INT codepage)
1116 {
1117 HSZ hsz = 0;
1118 WDML_INSTANCE* pInstance;
1119
1120 TRACE("(%d,%s,%d)\n", idInst, debugstr_a(psz), codepage);
1121
1122 pInstance = WDML_GetInstance(idInst);
1123 if (pInstance == NULL)
1124 WDML_SetAllLastError(DMLERR_INVALIDPARAMETER);
1125 else
1126 {
1127 if (codepage == 0) codepage = CP_WINANSI;
1128 hsz = WDML_CreateString(pInstance, psz, codepage);
1129 }
1130
1131 return hsz;
1132 }
1133
1134
1135 /******************************************************************************
1136 * DdeCreateStringHandleW [USER32.@] Creates handle to identify string
1137 *
1138 * PARAMS
1139 * idInst [I] Instance identifier
1140 * psz [I] Pointer to string
1141 * codepage [I] Code page identifier
1142 * RETURNS
1143 * Success: String handle
1144 * Failure: 0
1145 */
1146 HSZ WINAPI DdeCreateStringHandleW(DWORD idInst, LPCWSTR psz, INT codepage)
1147 {
1148 WDML_INSTANCE* pInstance;
1149 HSZ hsz = 0;
1150
1151 pInstance = WDML_GetInstance(idInst);
1152 if (pInstance == NULL)
1153 WDML_SetAllLastError(DMLERR_INVALIDPARAMETER);
1154 else
1155 {
1156 if (codepage == 0) codepage = CP_WINUNICODE;
1157 hsz = WDML_CreateString(pInstance, psz, codepage);
1158 }
1159
1160 return hsz;
1161 }
1162
1163 /*****************************************************************
1164 * DdeFreeStringHandle (USER32.@)
1165 * RETURNS
1166 * success: nonzero
1167 * fail: zero
1168 */
1169 BOOL WINAPI DdeFreeStringHandle(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_DecHSZ(pInstance, hsz);
1181
1182 return ret;
1183 }
1184
1185 /*****************************************************************
1186 * DdeKeepStringHandle (USER32.@)
1187 *
1188 * RETURNS
1189 * success: nonzero
1190 * fail: zero
1191 */
1192 BOOL WINAPI DdeKeepStringHandle(DWORD idInst, HSZ hsz)
1193 {
1194 WDML_INSTANCE* pInstance;
1195 BOOL ret = FALSE;
1196
1197 TRACE("(%d,%p):\n", idInst, hsz);
1198
1199 /* First check instance
1200 */
1201 pInstance = WDML_GetInstance(idInst);
1202 if (pInstance)
1203 ret = WDML_IncHSZ(pInstance, hsz);
1204
1205 return ret;
1206 }
1207
1208 /*****************************************************************
1209 * DdeCmpStringHandles (USER32.@)
1210 *
1211 * Compares the value of two string handles. This comparison is
1212 * not case sensitive.
1213 *
1214 * PARAMS
1215 * hsz1 [I] Handle to the first string
1216 * hsz2 [I] Handle to the second string
1217 *
1218 * RETURNS
1219 * -1 The value of hsz1 is zero or less than hsz2
1220 * 0 The values of hsz 1 and 2 are the same or both zero.
1221 * 1 The value of hsz2 is zero of less than hsz1
1222 */
1223 INT WINAPI DdeCmpStringHandles(HSZ hsz1, HSZ hsz2)
1224 {
1225 WCHAR psz1[MAX_BUFFER_LEN];
1226 WCHAR psz2[MAX_BUFFER_LEN];
1227 int ret = 0;
1228 int ret1, ret2;
1229
1230 ret1 = GetAtomNameW(HSZ2ATOM(hsz1), psz1, MAX_BUFFER_LEN);
1231 ret2 = GetAtomNameW(HSZ2ATOM(hsz2), psz2, MAX_BUFFER_LEN);
1232
1233 TRACE("(%p<%s> %p<%s>);\n", hsz1, debugstr_w(psz1), hsz2, debugstr_w(psz2));
1234
1235 /* Make sure we found both strings. */
1236 if (ret1 == 0 && ret2 == 0)
1237 {
1238 /* If both are not found, return both "zero strings". */
1239 ret = 0;
1240 }
1241 else if (ret1 == 0)
1242 {
1243 /* If hsz1 is a not found, return hsz1 is "zero string". */
1244 ret = -1;
1245 }
1246 else if (ret2 == 0)
1247 {
1248 /* If hsz2 is a not found, return hsz2 is "zero string". */
1249 ret = 1;
1250 }
1251 else
1252 {
1253 /* Compare the two strings we got (case insensitive). */
1254 ret = lstrcmpiW(psz1, psz2);
1255 /* Since strcmp returns any number smaller than
1256 * 0 when the first string is found to be less than
1257 * the second one we must make sure we are returning
1258 * the proper values.
1259 */
1260 if (ret < 0)
1261 {
1262 ret = -1;
1263 }
1264 else if (ret > 0)
1265 {
1266 ret = 1;
1267 }
1268 }
1269
1270 return ret;
1271 }
1272
1273 /* ================================================================
1274 *
1275 * Data handle management
1276 *
1277 * ================================================================ */
1278
1279 /*****************************************************************
1280 * DdeCreateDataHandle (USER32.@)
1281 */
1282 HDDEDATA WINAPI DdeCreateDataHandle(DWORD idInst, LPBYTE pSrc, DWORD cb, DWORD cbOff,
1283 HSZ hszItem, UINT wFmt, UINT afCmd)
1284 {
1285
1286 /* Other than check for validity we will ignore for now idInst, hszItem.
1287 * The purpose of these arguments still need to be investigated.
1288 */
1289
1290 WDML_INSTANCE* pInstance;
1291 HGLOBAL hMem;
1292 LPBYTE pByte;
1293 DDE_DATAHANDLE_HEAD* pDdh;
1294 WCHAR psz[MAX_BUFFER_LEN];
1295
1296 pInstance = WDML_GetInstance(idInst);
1297 if (pInstance == NULL)
1298 {
1299 WDML_SetAllLastError(DMLERR_INVALIDPARAMETER);
1300 return NULL;
1301 }
1302
1303 if (!GetAtomNameW(HSZ2ATOM(hszItem), psz, MAX_BUFFER_LEN))
1304 {
1305 psz[0] = HSZ2ATOM(hszItem);
1306 psz[1] = 0;
1307 }
1308
1309 TRACE("(%d,%p,cb %d, cbOff %d,%p <%s>,fmt %04x,%x)\n",
1310 idInst, pSrc, cb, cbOff, hszItem, debugstr_w(psz), wFmt, afCmd);
1311
1312 if (afCmd != 0 && afCmd != HDATA_APPOWNED)
1313 return 0;
1314
1315 /* we use the first 4 bytes to store the size */
1316 if (!(hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, cb + cbOff + sizeof(DDE_DATAHANDLE_HEAD))))
1317 {
1318 ERR("GlobalAlloc failed\n");
1319 return 0;
1320 }
1321
1322 pDdh = GlobalLock(hMem);
1323 if (!pDdh)
1324 {
1325 GlobalFree(hMem);
1326 return 0;
1327 }
1328
1329 pDdh->cfFormat = wFmt;
1330 pDdh->bAppOwned = (afCmd == HDATA_APPOWNED);
1331
1332 pByte = (LPBYTE)(pDdh + 1);
1333 if (pSrc)
1334 {
1335 memcpy(pByte, pSrc + cbOff, cb);
1336 }
1337 GlobalUnlock(hMem);
1338
1339 TRACE("=> %p\n", hMem);
1340 return hMem;
1341 }
1342
1343 /*****************************************************************
1344 *
1345 * DdeAddData (USER32.@)
1346 */
1347 HDDEDATA WINAPI DdeAddData(HDDEDATA hData, LPBYTE pSrc, DWORD cb, DWORD cbOff)
1348 {
1349 DWORD old_sz, new_sz;
1350 LPBYTE pDst;
1351
1352 TRACE("(%p,%p,cb %d, cbOff %d)\n", hData, pSrc, cb, cbOff);
1353
1354 pDst = DdeAccessData(hData, &old_sz);
1355 if (!pDst) return 0;
1356
1357 new_sz = cb + cbOff;
1358 if (new_sz > old_sz)
1359 {
1360 DdeUnaccessData(hData);
1361 hData = GlobalReAlloc(hData, new_sz + sizeof(DDE_DATAHANDLE_HEAD),
1362 GMEM_MOVEABLE | GMEM_DDESHARE);
1363 pDst = DdeAccessData(hData, &old_sz);
1364 }
1365
1366 if (!pDst) return 0;
1367
1368 memcpy(pDst + cbOff, pSrc, cb);
1369 DdeUnaccessData(hData);
1370 return hData;
1371 }
1372
1373 /******************************************************************************
1374 * DdeGetData [USER32.@] Copies data from DDE object to local buffer
1375 *
1376 *
1377 * PARAMS
1378 * hData [I] Handle to DDE object
1379 * pDst [I] Pointer to destination buffer
1380 * cbMax [I] Amount of data to copy
1381 * cbOff [I] Offset to beginning of data
1382 *
1383 * RETURNS
1384 * Size of memory object associated with handle
1385 */
1386 DWORD WINAPI DdeGetData(HDDEDATA hData, LPBYTE pDst, DWORD cbMax, DWORD cbOff)
1387 {
1388 DWORD dwSize, dwRet;
1389 LPBYTE pByte;
1390
1391 TRACE("(%p,%p,%d,%d)\n", hData, pDst, cbMax, cbOff);
1392
1393 pByte = DdeAccessData(hData, &dwSize);
1394
1395 if (pByte)
1396 {
1397 if (!pDst)
1398 {
1399 dwRet = dwSize;
1400 }
1401 else if (cbOff + cbMax < dwSize)
1402 {
1403 dwRet = cbMax;
1404 }
1405 else if (cbOff < dwSize)
1406 {
1407 dwRet = dwSize - cbOff;
1408 }
1409 else
1410 {
1411 dwRet = 0;
1412 }
1413 if (pDst && dwRet != 0)
1414 {
1415 memcpy(pDst, pByte + cbOff, dwRet);
1416 }
1417 DdeUnaccessData(hData);
1418 }
1419 else
1420 {
1421 dwRet = 0;
1422 }
1423 return dwRet;
1424 }
1425
1426 /*****************************************************************
1427 * DdeAccessData (USER32.@)
1428 */
1429 LPBYTE WINAPI DdeAccessData(HDDEDATA hData, LPDWORD pcbDataSize)
1430 {
1431 HGLOBAL hMem = hData;
1432 DDE_DATAHANDLE_HEAD* pDdh;
1433
1434 TRACE("(%p,%p)\n", hData, pcbDataSize);
1435
1436 pDdh = GlobalLock(hMem);
1437 if (pDdh == NULL)
1438 {
1439 ERR("Failed on GlobalLock(%p)\n", hMem);
1440 return 0;
1441 }
1442
1443 if (pcbDataSize != NULL)
1444 {
1445 *pcbDataSize = GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD);
1446 }
1447 TRACE("=> %p (%lu) fmt %04x\n", pDdh + 1, GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD), pDdh->cfFormat);
1448 return (LPBYTE)(pDdh + 1);
1449 }
1450
1451 /*****************************************************************
1452 * DdeUnaccessData (USER32.@)
1453 */
1454 BOOL WINAPI DdeUnaccessData(HDDEDATA hData)
1455 {
1456 HGLOBAL hMem = hData;
1457
1458 TRACE("(%p)\n", hData);
1459
1460 GlobalUnlock(hMem);
1461
1462 return TRUE;
1463 }
1464
1465 /*****************************************************************
1466 * DdeFreeDataHandle (USER32.@)
1467 */
1468 BOOL WINAPI DdeFreeDataHandle(HDDEDATA hData)
1469 {
1470 TRACE("(%p)\n", hData);
1471
1472 /* 1 is the handle value returned by an asynchronous operation. */
1473 if (hData == (HDDEDATA)1)
1474 return TRUE;
1475
1476 return GlobalFree(hData) == 0;
1477 }
1478
1479 /******************************************************************
1480 * WDML_IsAppOwned
1481 *
1482 *
1483 */
1484 BOOL WDML_IsAppOwned(HDDEDATA hData)
1485 {
1486 DDE_DATAHANDLE_HEAD* pDdh;
1487 BOOL ret = FALSE;
1488
1489 pDdh = GlobalLock(hData);
1490 if (pDdh != NULL)
1491 {
1492 ret = pDdh->bAppOwned;
1493 GlobalUnlock(hData);
1494 }
1495 return ret;
1496 }
1497
1498 /* ================================================================
1499 *
1500 * Global <=> Data handle management
1501 *
1502 * ================================================================ */
1503
1504 /* Note: we use a DDEDATA, but layout of DDEDATA, DDEADVISE and DDEPOKE structures is similar:
1505 * offset size
1506 * (bytes) (bits) comment
1507 * 0 16 bit fields for options (release, ackreq, response...)
1508 * 2 16 clipboard format
1509 * 4 ? data to be used
1510 */
1511 HDDEDATA WDML_Global2DataHandle(WDML_CONV* pConv, HGLOBAL hMem, WINE_DDEHEAD* p)
1512 {
1513 DDEDATA* pDd;
1514 HDDEDATA ret = 0;
1515 DWORD size;
1516
1517 if (hMem)
1518 {
1519 pDd = GlobalLock(hMem);
1520 size = GlobalSize(hMem) - sizeof(WINE_DDEHEAD);
1521 if (pDd)
1522 {
1523 if (p) memcpy(p, pDd, sizeof(WINE_DDEHEAD));
1524 switch (pDd->cfFormat)
1525 {
1526 default:
1527 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1528 pDd->cfFormat, hMem);
1529 /* fall thru */
1530 case 0:
1531 case CF_TEXT:
1532 ret = DdeCreateDataHandle(pConv->instance->instanceID, pDd->Value, size, 0, 0, pDd->cfFormat, 0);
1533 break;
1534 case CF_BITMAP:
1535 if (size >= sizeof(BITMAP))
1536 {
1537 BITMAP* bmp = (BITMAP*)pDd->Value;
1538 int count = bmp->bmWidthBytes * bmp->bmHeight * bmp->bmPlanes;
1539 if (size >= sizeof(BITMAP) + count)
1540 {
1541 HBITMAP hbmp;
1542
1543 if ((hbmp = CreateBitmap(bmp->bmWidth, bmp->bmHeight,
1544 bmp->bmPlanes, bmp->bmBitsPixel,
1545 pDd->Value + sizeof(BITMAP))))
1546 {
1547 ret = DdeCreateDataHandle(pConv->instance->instanceID, (LPBYTE)&hbmp, sizeof(hbmp),
1548 0, 0, CF_BITMAP, 0);
1549 }
1550 else ERR("Can't create bmp\n");
1551 }
1552 else
1553 {
1554 ERR("Wrong count: %u / %d\n", size, count);
1555 }
1556 } else ERR("No bitmap header\n");
1557 break;
1558 }
1559 GlobalUnlock(hMem);
1560 }
1561 }
1562 return ret;
1563 }
1564
1565 /******************************************************************
1566 * WDML_DataHandle2Global
1567 *
1568 *
1569 */
1570 HGLOBAL WDML_DataHandle2Global(HDDEDATA hDdeData, BOOL fResponse, BOOL fRelease,
1571 BOOL fDeferUpd, BOOL fAckReq)
1572 {
1573 DDE_DATAHANDLE_HEAD* pDdh;
1574 DWORD dwSize;
1575 HGLOBAL hMem = 0;
1576
1577 dwSize = GlobalSize(hDdeData) - sizeof(DDE_DATAHANDLE_HEAD);
1578 pDdh = GlobalLock(hDdeData);
1579 if (dwSize && pDdh)
1580 {
1581 WINE_DDEHEAD* wdh = NULL;
1582
1583 switch (pDdh->cfFormat)
1584 {
1585 default:
1586 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1587 pDdh->cfFormat, hDdeData);
1588 /* fall thru */
1589 case 0:
1590 case CF_TEXT:
1591 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, sizeof(WINE_DDEHEAD) + dwSize);
1592 if (hMem && (wdh = GlobalLock(hMem)))
1593 {
1594 memcpy(wdh + 1, pDdh + 1, dwSize);
1595 }
1596 break;
1597 case CF_BITMAP:
1598 if (dwSize >= sizeof(HBITMAP))
1599 {
1600 BITMAP bmp;
1601 DWORD count;
1602 HBITMAP hbmp = *(HBITMAP*)(pDdh + 1);
1603
1604 if (GetObjectW(hbmp, sizeof(bmp), &bmp))
1605 {
1606 count = bmp.bmWidthBytes * bmp.bmHeight;
1607 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE,
1608 sizeof(WINE_DDEHEAD) + sizeof(bmp) + count);
1609 if (hMem && (wdh = GlobalLock(hMem)))
1610 {
1611 memcpy(wdh + 1, &bmp, sizeof(bmp));
1612 GetBitmapBits(hbmp, count, ((char*)(wdh + 1)) + sizeof(bmp));
1613 }
1614 }
1615 }
1616 break;
1617 }
1618 if (wdh)
1619 {
1620 wdh->unused = 0;
1621 wdh->fResponse = fResponse;
1622 wdh->fRelease = fRelease;
1623 wdh->fDeferUpd = fDeferUpd;
1624 wdh->fAckReq = fAckReq;
1625 wdh->cfFormat = pDdh->cfFormat;
1626 GlobalUnlock(hMem);
1627 }
1628 GlobalUnlock(hDdeData);
1629 }
1630
1631 return hMem;
1632 }
1633
1634 /* ================================================================
1635 *
1636 * Server management
1637 *
1638 * ================================================================ */
1639
1640 /******************************************************************
1641 * WDML_AddServer
1642 *
1643 *
1644 */
1645 WDML_SERVER* WDML_AddServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1646 {
1647 static const WCHAR fmtW[] = {'%','s','(','0','x','%','*','x',')',0};
1648 WDML_SERVER* pServer;
1649 WCHAR buf1[256];
1650 WCHAR buf2[256];
1651
1652 pServer = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_SERVER));
1653 if (pServer == NULL) return NULL;
1654
1655 pServer->hszService = hszService;
1656 WDML_IncHSZ(pInstance, hszService);
1657
1658 DdeQueryStringW(pInstance->instanceID, hszService, buf1, 256, CP_WINUNICODE);
1659 snprintfW(buf2, 256, fmtW, buf1, 2*sizeof(ULONG_PTR), GetCurrentProcessId());
1660 pServer->hszServiceSpec = DdeCreateStringHandleW(pInstance->instanceID, buf2, CP_WINUNICODE);
1661
1662 pServer->atomService = WDML_MakeAtomFromHsz(pServer->hszService);
1663 pServer->atomServiceSpec = WDML_MakeAtomFromHsz(pServer->hszServiceSpec);
1664
1665 pServer->filterOn = TRUE;
1666
1667 pServer->next = pInstance->servers;
1668 pInstance->servers = pServer;
1669 return pServer;
1670 }
1671
1672 /******************************************************************
1673 * WDML_RemoveServer
1674 *
1675 *
1676 */
1677 void WDML_RemoveServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1678 {
1679 WDML_SERVER* pPrev = NULL;
1680 WDML_SERVER* pServer = NULL;
1681 WDML_CONV* pConv;
1682 WDML_CONV* pConvNext;
1683
1684 pServer = pInstance->servers;
1685
1686 while (pServer != NULL)
1687 {
1688 if (DdeCmpStringHandles(pServer->hszService, hszService) == 0)
1689 {
1690 WDML_BroadcastDDEWindows(WDML_szEventClass, WM_WDML_UNREGISTER,
1691 pServer->atomService, pServer->atomServiceSpec);
1692 /* terminate all conversations for given topic */
1693 for (pConv = pInstance->convs[WDML_SERVER_SIDE]; pConv != NULL; pConv = pConvNext)
1694 {
1695 pConvNext = pConv->next;
1696 if (DdeCmpStringHandles(pConv->hszService, hszService) == 0)
1697 {
1698 HWND client = pConv->hwndClient, server = pConv->hwndServer;
1699 WDML_RemoveConv(pConv, WDML_SERVER_SIDE);
1700 /* don't care about return code (whether client window is present or not) */
1701 PostMessageW(client, WM_DDE_TERMINATE, (WPARAM)server, 0);
1702 }
1703 }
1704 if (pServer == pInstance->servers)
1705 {
1706 pInstance->servers = pServer->next;
1707 }
1708 else
1709 {
1710 pPrev->next = pServer->next;
1711 }
1712
1713 DestroyWindow(pServer->hwndServer);
1714 WDML_DecHSZ(pInstance, pServer->hszServiceSpec);
1715 WDML_DecHSZ(pInstance, pServer->hszService);
1716
1717 GlobalDeleteAtom(pServer->atomService);
1718 GlobalDeleteAtom(pServer->atomServiceSpec);
1719
1720 HeapFree(GetProcessHeap(), 0, pServer);
1721 break;
1722 }
1723
1724 pPrev = pServer;
1725 pServer = pServer->next;
1726 }
1727 }
1728
1729 /*****************************************************************************
1730 * WDML_FindServer
1731 *
1732 * generic routine to return a pointer to the relevant ServiceNode
1733 * for a given service name, or NULL if the entry does not exist
1734 *
1735 */
1736 WDML_SERVER* WDML_FindServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1737 {
1738 WDML_SERVER* pServer;
1739
1740 for (pServer = pInstance->servers; pServer != NULL; pServer = pServer->next)
1741 {
1742 if (hszService == pServer->hszService)
1743 {
1744 return pServer;
1745 }
1746 }
1747 TRACE("Service name missing\n");
1748 return NULL;
1749 }
1750
1751 /* ================================================================
1752 *
1753 * Conversation management
1754 *
1755 * ================================================================ */
1756
1757 /******************************************************************
1758 * WDML_AddConv
1759 *
1760 *
1761 */
1762 WDML_CONV* WDML_AddConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1763 HSZ hszService, HSZ hszTopic, HWND hwndClient, HWND hwndServer)
1764 {
1765 WDML_CONV* pConv;
1766
1767 /* no conversation yet, add it */
1768 pConv = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_CONV));
1769 if (!pConv) return NULL;
1770
1771 pConv->instance = pInstance;
1772 WDML_IncHSZ(pInstance, pConv->hszService = hszService);
1773 WDML_IncHSZ(pInstance, pConv->hszTopic = hszTopic);
1774 pConv->magic = WDML_CONV_MAGIC;
1775 pConv->hwndServer = hwndServer;
1776 pConv->hwndClient = hwndClient;
1777 pConv->transactions = NULL;
1778 pConv->hUser = 0;
1779 pConv->wStatus = (side == WDML_CLIENT_SIDE) ? ST_CLIENT : 0L;
1780 pConv->wStatus |= pInstance->wStatus;
1781 /* check if both side of the conversation are of the same instance */
1782 if (GetWindowThreadProcessId(hwndClient, NULL) == GetWindowThreadProcessId(hwndServer, NULL) &&
1783 WDML_GetInstanceFromWnd(hwndClient) == WDML_GetInstanceFromWnd(hwndServer))
1784 {
1785 pConv->wStatus |= ST_ISSELF;
1786 }
1787 pConv->wConvst = XST_NULL;
1788
1789 pConv->next = pInstance->convs[side];
1790 pInstance->convs[side] = pConv;
1791
1792 TRACE("pConv->wStatus %04x pInstance(%p)\n", pConv->wStatus, pInstance);
1793
1794 return pConv;
1795 }
1796
1797 /******************************************************************
1798 * WDML_FindConv
1799 *
1800 *
1801 */
1802 WDML_CONV* WDML_FindConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1803 HSZ hszService, HSZ hszTopic)
1804 {
1805 WDML_CONV* pCurrent = NULL;
1806
1807 for (pCurrent = pInstance->convs[side]; pCurrent != NULL; pCurrent = pCurrent->next)
1808 {
1809 if (DdeCmpStringHandles(pCurrent->hszService, hszService) == 0 &&
1810 DdeCmpStringHandles(pCurrent->hszTopic, hszTopic) == 0)
1811 {
1812 return pCurrent;
1813 }
1814
1815 }
1816 return NULL;
1817 }
1818
1819 /******************************************************************
1820 * WDML_RemoveConv
1821 *
1822 *
1823 */
1824 void WDML_RemoveConv(WDML_CONV* pRef, WDML_SIDE side)
1825 {
1826 WDML_CONV* pPrev = NULL;
1827 WDML_CONV* pCurrent;
1828 WDML_XACT* pXAct;
1829 WDML_XACT* pXActNext;
1830 HWND hWnd;
1831
1832 if (!pRef)
1833 return;
1834
1835 /* remove any pending transaction */
1836 for (pXAct = pRef->transactions; pXAct != NULL; pXAct = pXActNext)
1837 {
1838 pXActNext = pXAct->next;
1839 WDML_FreeTransaction(pRef->instance, pXAct, TRUE);
1840 }
1841
1842 WDML_RemoveAllLinks(pRef->instance, pRef, side);
1843
1844 /* FIXME: should we keep the window around ? it seems so (at least on client side
1845 * to let QueryConvInfo work after conv termination, but also to implement
1846 * DdeReconnect...
1847 */
1848 /* destroy conversation window, but first remove pConv from hWnd.
1849 * this would help the wndProc do appropriate handling upon a WM_DESTROY message
1850 */
1851 hWnd = (side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer;
1852 SetWindowLongPtrW(hWnd, GWL_WDML_CONVERSATION, 0);
1853
1854 DestroyWindow((side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer);
1855
1856 WDML_DecHSZ(pRef->instance, pRef->hszService);
1857 WDML_DecHSZ(pRef->instance, pRef->hszTopic);
1858
1859 for (pCurrent = pRef->instance->convs[side]; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
1860 {
1861 if (pCurrent == pRef)
1862 {
1863 if (pCurrent == pRef->instance->convs[side])
1864 {
1865 pRef->instance->convs[side] = pCurrent->next;
1866 }
1867 else
1868 {
1869 pPrev->next = pCurrent->next;
1870 }
1871 pCurrent->magic = 0;
1872 HeapFree(GetProcessHeap(), 0, pCurrent);
1873 break;
1874 }
1875 }
1876 }
1877
1878 /******************************************************************
1879 * WDML_EnableCallback
1880 */
1881 static BOOL WDML_EnableCallback(WDML_CONV *pConv, UINT wCmd)
1882 {
1883 if (wCmd == EC_DISABLE)
1884 {
1885 pConv->wStatus |= ST_BLOCKED;
1886 TRACE("EC_DISABLE: conv %p status flags %04x\n", pConv, pConv->wStatus);
1887 return TRUE;
1888 }
1889
1890 if (wCmd == EC_QUERYWAITING)
1891 return pConv->transactions ? TRUE : FALSE;
1892
1893 if (wCmd != EC_ENABLEALL && wCmd != EC_ENABLEONE)
1894 {
1895 FIXME("Unknown command code %04x\n", wCmd);
1896 return FALSE;
1897 }
1898
1899 if (wCmd == EC_ENABLEALL)
1900 {
1901 pConv->wStatus &= ~ST_BLOCKED;
1902 TRACE("EC_ENABLEALL: conv %p status flags %04x\n", pConv, pConv->wStatus);
1903 }
1904
1905 while (pConv->transactions)
1906 {
1907 WDML_XACT *pXAct = pConv->transactions;
1908
1909 if (pConv->wStatus & ST_CLIENT)
1910 {
1911 /* transaction should be in the queue until handled */
1912 WDML_ClientHandle(pConv, pXAct, 0, NULL);
1913 WDML_UnQueueTransaction(pConv, pXAct);
1914 }
1915 else
1916 {
1917 /* transaction should be removed from the queue before handling */
1918 WDML_UnQueueTransaction(pConv, pXAct);
1919 WDML_ServerHandle(pConv, pXAct);
1920 }
1921
1922 WDML_FreeTransaction(pConv->instance, pXAct, TRUE);
1923
1924 if (wCmd == EC_ENABLEONE) break;
1925 }
1926 return TRUE;
1927 }
1928
1929 /*****************************************************************
1930 * DdeEnableCallback (USER32.@)
1931 */
1932 BOOL WINAPI DdeEnableCallback(DWORD idInst, HCONV hConv, UINT wCmd)
1933 {
1934 BOOL ret = FALSE;
1935 WDML_CONV *pConv;
1936
1937 TRACE("(%d, %p, %04x)\n", idInst, hConv, wCmd);
1938
1939 if (hConv)
1940 {
1941 pConv = WDML_GetConv(hConv, TRUE);
1942
1943 if (pConv && pConv->instance->instanceID == idInst)
1944 ret = WDML_EnableCallback(pConv, wCmd);
1945 }
1946 else
1947 {
1948 WDML_INSTANCE *pInstance = WDML_GetInstance(idInst);
1949
1950 if (!pInstance)
1951 return FALSE;
1952
1953 TRACE("adding flags %04x to instance %p\n", wCmd, pInstance);
1954 pInstance->wStatus |= wCmd;
1955
1956 if (wCmd == EC_DISABLE)
1957 {
1958 pInstance->wStatus |= ST_BLOCKED;
1959 TRACE("EC_DISABLE: inst %p status flags %04x\n", pInstance, pInstance->wStatus);
1960 }
1961 else if (wCmd == EC_ENABLEALL)
1962 {
1963 pInstance->wStatus &= ~ST_BLOCKED;
1964 TRACE("EC_ENABLEALL: inst %p status flags %04x\n", pInstance, pInstance->wStatus);
1965 }
1966
1967 ret = TRUE;
1968
1969 for (pConv = pInstance->convs[WDML_CLIENT_SIDE]; pConv != NULL; pConv = pConv->next)
1970 {
1971 ret = WDML_EnableCallback(pConv, wCmd);
1972 if (ret && wCmd == EC_QUERYWAITING) break;
1973 }
1974 }
1975
1976 return ret;
1977 }
1978
1979 /******************************************************************
1980 * WDML_GetConv
1981 *
1982 *
1983 */
1984 WDML_CONV* WDML_GetConv(HCONV hConv, BOOL checkConnected)
1985 {
1986 WDML_CONV* pConv = (WDML_CONV*)hConv;
1987
1988 /* FIXME: should do better checking */
1989 if (pConv == NULL || pConv->magic != WDML_CONV_MAGIC) return NULL;
1990
1991 if (!pConv->instance)
1992 {
1993 WARN("wrong thread ID, no instance\n");
1994 return NULL;
1995 }
1996
1997 if (pConv->instance->threadID != GetCurrentThreadId())
1998 {
1999 WARN("wrong thread ID\n");
2000 pConv->instance->lastError = DMLERR_INVALIDPARAMETER; /* FIXME: check */
2001 return NULL;
2002 }
2003
2004 if (checkConnected && !(pConv->wStatus & ST_CONNECTED))
2005 {
2006 WARN("found conv but ain't connected\n");
2007 pConv->instance->lastError = DMLERR_NO_CONV_ESTABLISHED;
2008 return NULL;
2009 }
2010
2011 return pConv;
2012 }
2013
2014 /******************************************************************
2015 * WDML_GetConvFromWnd
2016 *
2017 *
2018 */
2019 WDML_CONV* WDML_GetConvFromWnd(HWND hWnd)
2020 {
2021 return (WDML_CONV*)GetWindowLongPtrW(hWnd, GWL_WDML_CONVERSATION);
2022 }
2023
2024 /******************************************************************
2025 * WDML_PostAck
2026 *
2027 *
2028 */
2029 BOOL WDML_PostAck(WDML_CONV* pConv, WDML_SIDE side, WORD appRetCode,
2030 BOOL fBusy, BOOL fAck, UINT_PTR pmt, LPARAM lParam, UINT oldMsg)
2031 {
2032 DDEACK ddeAck;
2033 HWND from, to;
2034
2035 if (side == WDML_SERVER_SIDE)
2036 {
2037 from = pConv->hwndServer;
2038 to = pConv->hwndClient;
2039 }
2040 else
2041 {
2042 to = pConv->hwndServer;
2043 from = pConv->hwndClient;
2044 }
2045
2046 ddeAck.bAppReturnCode = appRetCode;
2047 ddeAck.reserved = 0;
2048 ddeAck.fBusy = fBusy;
2049 ddeAck.fAck = fAck;
2050
2051 TRACE("Posting a %s ack\n", ddeAck.fAck ? "positive" : "negative");
2052
2053 lParam = (lParam) ? ReuseDDElParam(lParam, oldMsg, WM_DDE_ACK, *(WORD*)&ddeAck, pmt) :
2054 PackDDElParam(WM_DDE_ACK, *(WORD*)&ddeAck, pmt);
2055 if (!PostMessageW(to, WM_DDE_ACK, (WPARAM)from, lParam))
2056 {
2057 pConv->wStatus &= ~ST_CONNECTED;
2058 pConv->instance->lastError = DMLERR_POSTMSG_FAILED;
2059 FreeDDElParam(WM_DDE_ACK, lParam);
2060 return FALSE;
2061 }
2062 return TRUE;
2063 }
2064
2065 /*****************************************************************
2066 * DdeSetUserHandle (USER32.@)
2067 */
2068 BOOL WINAPI DdeSetUserHandle(HCONV hConv, DWORD id, DWORD hUser)
2069 {
2070 WDML_CONV* pConv;
2071
2072 pConv = WDML_GetConv(hConv, FALSE);
2073 if (pConv == NULL)
2074 return FALSE;
2075
2076 if (id == QID_SYNC)
2077 {
2078 pConv->hUser = hUser;
2079 }
2080 else
2081 {
2082 WDML_XACT* pXAct;
2083
2084 pXAct = WDML_FindTransaction(pConv, id);
2085 if (pXAct)
2086 {
2087 pXAct->hUser = hUser;
2088 }
2089 else
2090 {
2091 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2092 return FALSE;
2093 }
2094 }
2095 return TRUE;
2096 }
2097
2098 /******************************************************************
2099 * WDML_GetLocalConvInfo
2100 *
2101 *
2102 */
2103 static BOOL WDML_GetLocalConvInfo(WDML_CONV* pConv, CONVINFO* ci, DWORD id)
2104 {
2105 BOOL ret = TRUE;
2106 WDML_LINK* pLink;
2107 WDML_SIDE side;
2108
2109 ci->hConvPartner = (pConv->wStatus & ST_ISLOCAL) ? (HCONV)((ULONG_PTR)pConv | 1) : 0;
2110 ci->hszSvcPartner = pConv->hszService;
2111 ci->hszServiceReq = pConv->hszService; /* FIXME: they shouldn't be the same, should they ? */
2112 ci->hszTopic = pConv->hszTopic;
2113 ci->wStatus = pConv->wStatus;
2114
2115 side = (pConv->wStatus & ST_CLIENT) ? WDML_CLIENT_SIDE : WDML_SERVER_SIDE;
2116
2117 for (pLink = pConv->instance->links[side]; pLink != NULL; pLink = pLink->next)
2118 {
2119 if (pLink->hConv == (HCONV)pConv)
2120 {
2121 ci->wStatus |= ST_ADVISE;
2122 break;
2123 }
2124 }
2125
2126 /* FIXME: non handled status flags:
2127 ST_BLOCKED
2128 ST_BLOCKNEXT
2129 ST_INLIST
2130 */
2131
2132 ci->wConvst = pConv->wConvst; /* FIXME */
2133
2134 ci->wLastError = 0; /* FIXME: note it's not the instance last error */
2135 ci->hConvList = 0;
2136 ci->ConvCtxt = pConv->convContext;
2137 if (ci->wStatus & ST_CLIENT)
2138 {
2139 ci->hwnd = pConv->hwndClient;
2140 ci->hwndPartner = pConv->hwndServer;
2141 }
2142 else
2143 {
2144 ci->hwnd = pConv->hwndServer;
2145 ci->hwndPartner = pConv->hwndClient;
2146 }
2147 if (id == QID_SYNC)
2148 {
2149 ci->hUser = pConv->hUser;
2150 ci->hszItem = 0;
2151 ci->wFmt = 0;
2152 ci->wType = 0;
2153 }
2154 else
2155 {
2156 WDML_XACT* pXAct;
2157
2158 pXAct = WDML_FindTransaction(pConv, id);
2159 if (pXAct)
2160 {
2161 ci->hUser = pXAct->hUser;
2162 ci->hszItem = pXAct->hszItem;
2163 ci->wFmt = pXAct->wFmt;
2164 ci->wType = pXAct->wType;
2165 }
2166 else
2167 {
2168 ret = 0;
2169 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2170 }
2171 }
2172 return ret;
2173 }
2174
2175 /******************************************************************
2176 * DdeQueryConvInfo (USER32.@)
2177 *
2178 * FIXME: Set last DDE error on failure.
2179 */
2180 UINT WINAPI DdeQueryConvInfo(HCONV hConv, DWORD id, PCONVINFO lpConvInfo)
2181 {
2182 UINT ret = lpConvInfo->cb;
2183 CONVINFO ci;
2184 WDML_CONV* pConv;
2185
2186 TRACE("(%p,%x,%p)\n", hConv, id, lpConvInfo);
2187
2188 if (!hConv)
2189 {
2190 FIXME("hConv is NULL\n");
2191 return 0;
2192 }
2193
2194 pConv = WDML_GetConv(hConv, FALSE);
2195 if (pConv != NULL)
2196 {
2197 if (!WDML_GetLocalConvInfo(pConv, &ci, id))
2198 ret = 0;
2199 }
2200 else
2201 {
2202 if ((ULONG_PTR)hConv & 1)
2203 {
2204 pConv = WDML_GetConv((HCONV)((ULONG_PTR)hConv & ~1), FALSE);
2205 if (pConv != NULL)
2206 FIXME("Request on remote conversation information is not implemented yet\n");
2207 }
2208 ret = 0;
2209 }
2210
2211 if (ret != 0)
2212 memcpy(lpConvInfo, &ci, min((size_t)lpConvInfo->cb, sizeof(ci)));
2213 return ret;
2214 }
2215
2216 /* ================================================================
2217 *
2218 * Link (hot & warm) management
2219 *
2220 * ================================================================ */
2221
2222 /******************************************************************
2223 * WDML_AddLink
2224 *
2225 *
2226 */
2227 void WDML_AddLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2228 UINT wType, HSZ hszItem, UINT wFmt)
2229 {
2230 WDML_LINK* pLink;
2231
2232 pLink = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_LINK));
2233 if (pLink == NULL)
2234 {
2235 ERR("OOM\n");
2236 return;
2237 }
2238
2239 pLink->hConv = hConv;
2240 pLink->transactionType = wType;
2241 WDML_IncHSZ(pInstance, pLink->hszItem = hszItem);
2242 pLink->uFmt = wFmt;
2243 pLink->next = pInstance->links[side];
2244 pInstance->links[side] = pLink;
2245 }
2246
2247 /******************************************************************
2248 * WDML_RemoveLink
2249 *
2250 *
2251 */
2252 void WDML_RemoveLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2253 HSZ hszItem, UINT uFmt)
2254 {
2255 WDML_LINK* pPrev = NULL;
2256 WDML_LINK* pCurrent = NULL;
2257
2258 pCurrent = pInstance->links[side];
2259
2260 while (pCurrent != NULL)
2261 {
2262 if (pCurrent->hConv == hConv &&
2263 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2264 pCurrent->uFmt == uFmt)
2265 {
2266 if (pCurrent == pInstance->links[side])
2267 {
2268 pInstance->links[side] = pCurrent->next;
2269 }
2270 else
2271 {
2272 pPrev->next = pCurrent->next;
2273 }
2274
2275 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2276 HeapFree(GetProcessHeap(), 0, pCurrent);
2277 break;
2278 }
2279
2280 pPrev = pCurrent;
2281 pCurrent = pCurrent->next;
2282 }
2283 }
2284
2285 /* this function is called to remove all links related to the conv.
2286 It should be called from both client and server when terminating
2287 the conversation.
2288 */
2289 /******************************************************************
2290 * WDML_RemoveAllLinks
2291 *
2292 *
2293 */
2294 void WDML_RemoveAllLinks(WDML_INSTANCE* pInstance, WDML_CONV* pConv, WDML_SIDE side)
2295 {
2296 WDML_LINK* pPrev = NULL;
2297 WDML_LINK* pCurrent = NULL;
2298 WDML_LINK* pNext = NULL;
2299
2300 pCurrent = pInstance->links[side];
2301
2302 while (pCurrent != NULL)
2303 {
2304 if (pCurrent->hConv == (HCONV)pConv)
2305 {
2306 if (pCurrent == pInstance->links[side])
2307 {
2308 pInstance->links[side] = pCurrent->next;
2309 pNext = pCurrent->next;
2310 }
2311 else
2312 {
2313 pPrev->next = pCurrent->next;
2314 pNext = pCurrent->next;
2315 }
2316
2317 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2318
2319 HeapFree(GetProcessHeap(), 0, pCurrent);
2320 pCurrent = NULL;
2321 }
2322
2323 if (pCurrent)
2324 {
2325 pPrev = pCurrent;
2326 pCurrent = pCurrent->next;
2327 }
2328 else
2329 {
2330 pCurrent = pNext;
2331 }
2332 }
2333 }
2334
2335 /******************************************************************
2336 * WDML_FindLink
2337 *
2338 *
2339 */
2340 WDML_LINK* WDML_FindLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2341 HSZ hszItem, BOOL use_fmt, UINT uFmt)
2342 {
2343 WDML_LINK* pCurrent = NULL;
2344
2345 for (pCurrent = pInstance->links[side]; pCurrent != NULL; pCurrent = pCurrent->next)
2346 {
2347 /* we don't need to check for transaction type as it can be altered */
2348
2349 if (pCurrent->hConv == hConv &&
2350 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2351 (!use_fmt || pCurrent->uFmt == uFmt))
2352 {
2353 break;
2354 }
2355
2356 }
2357
2358 return pCurrent;
2359 }
2360
2361 /* ================================================================
2362 *
2363 * Transaction management
2364 *
2365 * ================================================================ */
2366
2367 /******************************************************************
2368 * WDML_AllocTransaction
2369 *
2370 * Alloc a transaction structure for handling the message ddeMsg
2371 */
2372 WDML_XACT* WDML_AllocTransaction(WDML_INSTANCE* pInstance, UINT ddeMsg,
2373 UINT wFmt, HSZ hszItem)
2374 {
2375 WDML_XACT* pXAct;
2376 static WORD tid = 1; /* FIXME: wrap around */
2377
2378 pXAct = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_XACT));
2379 if (!pXAct)
2380 {
2381 pInstance->lastError = DMLERR_MEMORY_ERROR;
2382 return NULL;
2383 }
2384
2385 pXAct->xActID = tid++;
2386 pXAct->ddeMsg = ddeMsg;
2387 pXAct->hDdeData = 0;
2388 pXAct->hUser = 0;
2389 pXAct->next = NULL;
2390 pXAct->wType = 0;
2391 pXAct->wFmt = wFmt;
2392 if ((pXAct->hszItem = hszItem)) WDML_IncHSZ(pInstance, pXAct->hszItem);
2393 pXAct->atom = 0;
2394 pXAct->hMem = 0;
2395 pXAct->lParam = 0;
2396
2397 return pXAct;
2398 }
2399
2400 /******************************************************************
2401 * WDML_QueueTransaction
2402 *
2403 * Adds a transaction to the list of transaction
2404 */
2405 void WDML_QueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2406 {
2407 WDML_XACT** pt;
2408
2409 /* advance to last in queue */
2410 for (pt = &pConv->transactions; *pt != NULL; pt = &(*pt)->next);
2411 *pt = pXAct;
2412 }
2413
2414 /******************************************************************
2415 * WDML_UnQueueTransaction
2416 *
2417 *
2418 */
2419 BOOL WDML_UnQueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2420 {
2421 WDML_XACT** pt;
2422
2423 for (pt = &pConv->transactions; *pt; pt = &(*pt)->next)
2424 {
2425 if (*pt == pXAct)
2426 {
2427 *pt = pXAct->next;
2428 return TRUE;
2429 }
2430 }
2431 return FALSE;
2432 }
2433
2434 /******************************************************************
2435 * WDML_FreeTransaction
2436 *
2437 *
2438 */
2439 void WDML_FreeTransaction(WDML_INSTANCE* pInstance, WDML_XACT* pXAct, BOOL doFreePmt)
2440 {
2441 /* free pmt(s) in pXAct too. check against one for not deleting TRUE return values */
2442 if (doFreePmt && (ULONG_PTR)pXAct->hMem > 1)
2443 {
2444 GlobalFree(pXAct->hMem);
2445 }
2446 if (pXAct->hszItem) WDML_DecHSZ(pInstance, pXAct->hszItem);
2447
2448 HeapFree(GetProcessHeap(), 0, pXAct);
2449 }
2450
2451 /******************************************************************
2452 * WDML_FindTransaction
2453 *
2454 *
2455 */
2456 WDML_XACT* WDML_FindTransaction(WDML_CONV* pConv, DWORD tid)
2457 {
2458 WDML_XACT* pXAct;
2459
2460 tid = HIWORD(tid);
2461 for (pXAct = pConv->transactions; pXAct; pXAct = pXAct->next)
2462 {
2463 if (pXAct->xActID == tid)
2464 break;
2465 }
2466 return pXAct;
2467 }
2468
2469 /* ================================================================
2470 *
2471 * Information broadcast across DDEML implementations
2472 *
2473 * ================================================================ */
2474
2475 struct tagWDML_BroadcastPmt
2476 {
2477 LPCWSTR clsName;
2478 UINT uMsg;
2479 WPARAM wParam;
2480 LPARAM lParam;
2481 };
2482
2483 /******************************************************************
2484 * WDML_BroadcastEnumProc
2485 *
2486 *
2487 */
2488 static BOOL CALLBACK WDML_BroadcastEnumProc(HWND hWnd, LPARAM lParam)
2489 {
2490 struct tagWDML_BroadcastPmt* s = (struct tagWDML_BroadcastPmt*)lParam;
2491 WCHAR buffer[128];
2492
2493 if (GetClassNameW(hWnd, buffer, 128) > 0 &&
2494 lstrcmpiW(buffer, s->clsName) == 0)
2495 {
2496 PostMessageW(hWnd, s->uMsg, s->wParam, s->lParam);
2497 }
2498 return TRUE;
2499 }
2500
2501 /******************************************************************
2502 * WDML_BroadcastDDEWindows
2503 *
2504 *
2505 */
2506 void WDML_BroadcastDDEWindows(LPCWSTR clsName, UINT uMsg, WPARAM wParam, LPARAM lParam)
2507 {
2508 struct tagWDML_BroadcastPmt s;
2509
2510 s.clsName = clsName;
2511 s.uMsg = uMsg;
2512 s.wParam = wParam;
2513 s.lParam = lParam;
2514 EnumWindows(WDML_BroadcastEnumProc, (LPARAM)&s);
2515 }
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