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user32: Convert source files to utf-8.
[wine/multimedia.git] / dlls / user32 / dde_misc.c
blob79f3540114e0b65b18747cc97deca243414ebcab
1 /*
2 * DDEML library
3 *
4 * Copyright 1997 Alexandre Julliard
5 * Copyright 1997 Len White
6 * Copyright 1999 Keith Matthews
7 * Copyright 2000 Corel
8 * Copyright 2001 Eric Pouech
9 * Copyright 2003, 2004, 2005 Dmitry Timoshkov
10 *
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; either
14 * version 2.1 of the License, or (at your option) any later version.
15 *
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with this library; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
24 */
25
26 #include "config.h"
27 #include "wine/port.h"
28
29 #include <string.h>
30 #include <stdarg.h>
31 #include <stdio.h>
32 #include "windef.h"
33 #include "winbase.h"
34 #include "wingdi.h"
35 #include "winuser.h"
36 #include "dde.h"
37 #include "ddeml.h"
38 #include "win.h"
39 #include "dde_private.h"
40 #include "wine/unicode.h"
41 #include "wine/debug.h"
42
43 WINE_DEFAULT_DEBUG_CHANNEL(ddeml);
44
45 /* convert between ATOM and HSZ avoiding compiler warnings */
46 #define ATOM2HSZ(atom) ((HSZ) (ULONG_PTR)(atom))
47 #define HSZ2ATOM(hsz) ((ATOM) (ULONG_PTR)(hsz))
48
49 static WDML_INSTANCE* WDML_InstanceList = NULL;
50 static LONG WDML_MaxInstanceID = 0; /* OK for present, have to worry about wrap-around later */
51 const WCHAR WDML_szEventClass[] = {'W','i','n','e','D','d','e','E','v','e','n','t','C','l','a','s','s',0};
52
53 /* protection for instance list */
54 static CRITICAL_SECTION WDML_CritSect;
55 static CRITICAL_SECTION_DEBUG critsect_debug =
56 {
57 0, 0, &WDML_CritSect,
58 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
59 0, 0, { (DWORD_PTR)(__FILE__ ": WDML_CritSect") }
60 };
61 static CRITICAL_SECTION WDML_CritSect = { &critsect_debug, -1, 0, 0, 0, 0 };
62
63 /* ================================================================
64 *
65 * Pure DDE (non DDEML) management
66 *
67 * ================================================================ */
68
69
70 /*****************************************************************
71 * PackDDElParam (USER32.@)
72 *
73 * RETURNS
74 * the packed lParam
75 */
76 LPARAM WINAPI PackDDElParam(UINT msg, UINT_PTR uiLo, UINT_PTR uiHi)
77 {
78 HGLOBAL hMem;
79 UINT_PTR *params;
80
81 switch (msg)
82 {
83 case WM_DDE_ACK:
84 case WM_DDE_ADVISE:
85 case WM_DDE_DATA:
86 case WM_DDE_POKE:
87 if (!(hMem = GlobalAlloc(GMEM_DDESHARE, sizeof(UINT_PTR) * 2)))
88 {
89 ERR("GlobalAlloc failed\n");
90 return 0;
91 }
92 if (!(params = GlobalLock(hMem)))
93 {
94 ERR("GlobalLock failed (%p)\n", hMem);
95 return 0;
96 }
97 params[0] = uiLo;
98 params[1] = uiHi;
99 GlobalUnlock(hMem);
100 return (LPARAM)hMem;
101
102 case WM_DDE_EXECUTE:
103 return uiHi;
104
105 default:
106 return MAKELPARAM(uiLo, uiHi);
107 }
108 }
109
110
111 /*****************************************************************
112 * UnpackDDElParam (USER32.@)
113 *
114 * RETURNS
115 * success: nonzero
116 * failure: zero
117 */
118 BOOL WINAPI UnpackDDElParam(UINT msg, LPARAM lParam,
119 PUINT_PTR uiLo, PUINT_PTR uiHi)
120 {
121 UINT_PTR *params;
122
123 switch (msg)
124 {
125 case WM_DDE_ACK:
126 case WM_DDE_ADVISE:
127 case WM_DDE_DATA:
128 case WM_DDE_POKE:
129 if (!lParam || !(params = GlobalLock((HGLOBAL)lParam)))
130 {
131 if (uiLo) *uiLo = 0;
132 if (uiHi) *uiHi = 0;
133 return FALSE;
134 }
135 if (uiLo) *uiLo = params[0];
136 if (uiHi) *uiHi = params[1];
137 GlobalUnlock( (HGLOBAL)lParam );
138 return TRUE;
139
140 case WM_DDE_EXECUTE:
141 if (uiLo) *uiLo = 0;
142 if (uiHi) *uiHi = lParam;
143 return TRUE;
144
145 default:
146 if (uiLo) *uiLo = LOWORD(lParam);
147 if (uiHi) *uiHi = HIWORD(lParam);
148 return TRUE;
149 }
150 }
151
152
153 /*****************************************************************
154 * FreeDDElParam (USER32.@)
155 *
156 * RETURNS
157 * success: nonzero
158 * failure: zero
159 */
160 BOOL WINAPI FreeDDElParam(UINT msg, LPARAM lParam)
161 {
162 switch (msg)
163 {
164 case WM_DDE_ACK:
165 case WM_DDE_ADVISE:
166 case WM_DDE_DATA:
167 case WM_DDE_POKE:
168 /* first check if it's a global handle */
169 if (!GlobalHandle( (LPVOID)lParam )) return TRUE;
170 return !GlobalFree( (HGLOBAL)lParam );
171
172 default:
173 return TRUE;
174 }
175 }
176
177
178 /*****************************************************************
179 * ReuseDDElParam (USER32.@)
180 *
181 * RETURNS
182 * the packed lParam
183 */
184 LPARAM WINAPI ReuseDDElParam(LPARAM lParam, UINT msgIn, UINT msgOut,
185 UINT_PTR uiLo, UINT_PTR uiHi)
186 {
187 UINT_PTR *params;
188
189 switch (msgIn)
190 {
191 case WM_DDE_ACK:
192 case WM_DDE_ADVISE:
193 case WM_DDE_DATA:
194 case WM_DDE_POKE:
195 switch(msgOut)
196 {
197 case WM_DDE_ACK:
198 case WM_DDE_ADVISE:
199 case WM_DDE_DATA:
200 case WM_DDE_POKE:
201 if (!lParam) return 0;
202 if (!(params = GlobalLock( (HGLOBAL)lParam )))
203 {
204 ERR("GlobalLock failed\n");
205 return 0;
206 }
207 params[0] = uiLo;
208 params[1] = uiHi;
209 TRACE("Reusing pack %08lx %08lx\n", uiLo, uiHi);
210 GlobalUnlock( (HGLOBAL)lParam );
211 return lParam;
212
213 case WM_DDE_EXECUTE:
214 FreeDDElParam( msgIn, lParam );
215 return uiHi;
216
217 default:
218 FreeDDElParam( msgIn, lParam );
219 return MAKELPARAM(uiLo, uiHi);
220 }
221
222 default:
223 return PackDDElParam( msgOut, uiLo, uiHi );
224 }
225 }
226
227 /*****************************************************************
228 * ImpersonateDdeClientWindow (USER32.@)
229 *
230 * PARAMS
231 * hWndClient [I] handle to DDE client window
232 * hWndServer [I] handle to DDE server window
233 */
234 BOOL WINAPI ImpersonateDdeClientWindow(HWND hWndClient, HWND hWndServer)
235 {
236 FIXME("(%p %p): stub\n", hWndClient, hWndServer);
237 return FALSE;
238 }
239
240 /*****************************************************************
241 * DdeSetQualityOfService (USER32.@)
242 */
243
244 BOOL WINAPI DdeSetQualityOfService(HWND hwndClient, CONST SECURITY_QUALITY_OF_SERVICE *pqosNew,
245 PSECURITY_QUALITY_OF_SERVICE pqosPrev)
246 {
247 FIXME("(%p %p %p): stub\n", hwndClient, pqosNew, pqosPrev);
248 return TRUE;
249 }
250
251 /* ================================================================
252 *
253 * Instance management
254 *
255 * ================================================================ */
256
257 /******************************************************************************
258 * IncrementInstanceId
259 *
260 * generic routine to increment the max instance Id and allocate a new application instance
261 */
262 static void WDML_IncrementInstanceId(WDML_INSTANCE* pInstance)
263 {
264 DWORD id = InterlockedIncrement(&WDML_MaxInstanceID);
265
266 pInstance->instanceID = id;
267 TRACE("New instance id %d allocated\n", id);
268 }
269
270 /******************************************************************
271 * WDML_EventProc
272 *
273 *
274 */
275 static LRESULT CALLBACK WDML_EventProc(HWND hwndEvent, UINT uMsg, WPARAM wParam, LPARAM lParam)
276 {
277 WDML_INSTANCE* pInstance;
278 HSZ hsz1, hsz2;
279
280 switch (uMsg)
281 {
282 case WM_WDML_REGISTER:
283 pInstance = WDML_GetInstanceFromWnd(hwndEvent);
284 /* try calling the Callback */
285 if (pInstance && !(pInstance->CBFflags & CBF_SKIP_REGISTRATIONS))
286 {
287 hsz1 = WDML_MakeHszFromAtom(pInstance, wParam);
288 hsz2 = WDML_MakeHszFromAtom(pInstance, lParam);
289 WDML_InvokeCallback(pInstance, XTYP_REGISTER, 0, 0, hsz1, hsz2, 0, 0, 0);
290 WDML_DecHSZ(pInstance, hsz1);
291 WDML_DecHSZ(pInstance, hsz2);
292 }
293 break;
294
295 case WM_WDML_UNREGISTER:
296 pInstance = WDML_GetInstanceFromWnd(hwndEvent);
297 if (pInstance && !(pInstance->CBFflags & CBF_SKIP_UNREGISTRATIONS))
298 {
299 hsz1 = WDML_MakeHszFromAtom(pInstance, wParam);
300 hsz2 = WDML_MakeHszFromAtom(pInstance, lParam);
301 WDML_InvokeCallback(pInstance, XTYP_UNREGISTER, 0, 0, hsz1, hsz2, 0, 0, 0);
302 WDML_DecHSZ(pInstance, hsz1);
303 WDML_DecHSZ(pInstance, hsz2);
304 }
305 break;
306
307 case WM_WDML_CONNECT_CONFIRM:
308 pInstance = WDML_GetInstanceFromWnd(hwndEvent);
309 if (pInstance && !(pInstance->CBFflags & CBF_SKIP_CONNECT_CONFIRMS))
310 {
311 WDML_CONV* pConv;
312 /* confirm connection...
313 * lookup for this conv handle
314 */
315 HWND client = WIN_GetFullHandle( (HWND)wParam );
316 HWND server = WIN_GetFullHandle( (HWND)lParam );
317 for (pConv = pInstance->convs[WDML_SERVER_SIDE]; pConv != NULL; pConv = pConv->next)
318 {
319 if (pConv->hwndClient == client && pConv->hwndServer == server)
320 break;
321 }
322 if (pConv)
323 {
324 pConv->wStatus |= ST_ISLOCAL;
325
326 WDML_InvokeCallback(pInstance, XTYP_CONNECT_CONFIRM, 0, (HCONV)pConv,
327 pConv->hszTopic, pConv->hszService, 0, 0,
328 (pConv->wStatus & ST_ISSELF) ? 1 : 0);
329 }
330 }
331 break;
332 default:
333 return DefWindowProcW(hwndEvent, uMsg, wParam, lParam);
334 }
335 return 0;
336 }
337
338 /******************************************************************
339 * WDML_Initialize
340 *
341 *
342 */
343 UINT WDML_Initialize(LPDWORD pidInst, PFNCALLBACK pfnCallback,
344 DWORD afCmd, DWORD ulRes, BOOL bUnicode, BOOL b16)
345 {
346 WDML_INSTANCE* pInstance;
347 WDML_INSTANCE* reference_inst;
348 UINT ret;
349 WNDCLASSEXW wndclass;
350
351 TRACE("(%p,%p,0x%x,%d,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->win16 = b16;
381 pInstance->nodeList = NULL; /* node will be added later */
382 pInstance->monitorFlags = afCmd & MF_MASK;
383 pInstance->wStatus = 0;
384 pInstance->servers = NULL;
385 pInstance->convs[0] = NULL;
386 pInstance->convs[1] = NULL;
387 pInstance->links[0] = NULL;
388 pInstance->links[1] = NULL;
389
390 /* isolate CBF flags in one go, expect this will go the way of all attempts to be clever !! */
391
392 pInstance->CBFflags = afCmd^((afCmd&MF_MASK)|((afCmd&APPCMD_MASK)|(afCmd&APPCLASS_MASK)));
393
394 if (!pInstance->clientOnly)
395 {
396 /* Check for other way of setting Client-only !! */
397 pInstance->clientOnly =
398 (pInstance->CBFflags & CBF_FAIL_ALLSVRXACTIONS) == CBF_FAIL_ALLSVRXACTIONS;
399 }
400
401 TRACE("instance created - checking validity\n");
402
403 if (*pidInst == 0)
404 {
405 /* Initialisation of new Instance Identifier */
406 TRACE("new instance, callback %p flags %X\n",pfnCallback,afCmd);
407
408 EnterCriticalSection(&WDML_CritSect);
409
410 if (WDML_InstanceList == NULL)
411 {
412 /* can't be another instance in this case, assign to the base pointer */
413 WDML_InstanceList = pInstance;
414
415 /* since first must force filter of XTYP_CONNECT and XTYP_WILDCONNECT for
416 * present
417 * ------------------------------- NOTE NOTE NOTE --------------------------
418 *
419 * the manual is not clear if this condition
420 * applies to the first call to DdeInitialize from an application, or the
421 * first call for a given callback !!!
422 */
423
424 pInstance->CBFflags = pInstance->CBFflags|APPCMD_FILTERINITS;
425 TRACE("First application instance detected OK\n");
426 /* allocate new instance ID */
427 WDML_IncrementInstanceId(pInstance);
428 }
429 else
430 {
431 /* really need to chain the new one in to the latest here, but after checking conditions
432 * such as trying to start a conversation from an application trying to monitor */
433 reference_inst = WDML_InstanceList;
434 TRACE("Subsequent application instance - starting checks\n");
435 while (reference_inst->next != NULL)
436 {
437 /*
438 * This set of tests will work if application uses same instance Id
439 * at application level once allocated - which is what manual implies
440 * should happen. If someone tries to be
441 * clever (lazy ?) it will fail to pick up that later calls are for
442 * the same application - should we trust them ?
443 */
444 if (pInstance->instanceID == reference_inst->instanceID)
445 {
446 /* Check 1 - must be same Client-only state */
447
448 if (pInstance->clientOnly != reference_inst->clientOnly)
449 {
450 ret = DMLERR_DLL_USAGE;
451 goto theError;
452 }
453
454 /* Check 2 - cannot use 'Monitor' with any non-monitor modes */
455
456 if (pInstance->monitor != reference_inst->monitor)
457 {
458 ret = DMLERR_INVALIDPARAMETER;
459 goto theError;
460 }
461
462 /* Check 3 - must supply different callback address */
463
464 if (pInstance->callback == reference_inst->callback)
465 {
466 ret = DMLERR_DLL_USAGE;
467 goto theError;
468 }
469 }
470 reference_inst = reference_inst->next;
471 }
472 /* All cleared, add to chain */
473
474 TRACE("Application Instance checks finished\n");
475 WDML_IncrementInstanceId(pInstance);
476 reference_inst->next = pInstance;
477 }
478 LeaveCriticalSection(&WDML_CritSect);
479
480 *pidInst = pInstance->instanceID;
481
482 /* for deadlock issues, windows must always be created when outside the critical section */
483 wndclass.cbSize = sizeof(wndclass);
484 wndclass.style = 0;
485 wndclass.lpfnWndProc = WDML_EventProc;
486 wndclass.cbClsExtra = 0;
487 wndclass.cbWndExtra = sizeof(ULONG_PTR);
488 wndclass.hInstance = 0;
489 wndclass.hIcon = 0;
490 wndclass.hCursor = 0;
491 wndclass.hbrBackground = 0;
492 wndclass.lpszMenuName = NULL;
493 wndclass.lpszClassName = WDML_szEventClass;
494 wndclass.hIconSm = 0;
495
496 RegisterClassExW(&wndclass);
497
498 pInstance->hwndEvent = CreateWindowW(WDML_szEventClass, NULL,
499 WS_POPUP, 0, 0, 0, 0,
500 0, 0, 0, 0);
501
502 SetWindowLongPtrW(pInstance->hwndEvent, GWL_WDML_INSTANCE, (ULONG_PTR)pInstance);
503
504 TRACE("New application instance processing finished OK\n");
505 }
506 else
507 {
508 /* Reinitialisation situation --- FIX */
509 TRACE("reinitialisation of (%p,%p,0x%x,%d): stub\n", pidInst, pfnCallback, afCmd, ulRes);
510
511 EnterCriticalSection(&WDML_CritSect);
512
513 if (WDML_InstanceList == NULL)
514 {
515 ret = DMLERR_INVALIDPARAMETER;
516 goto theError;
517 }
518 /* can't reinitialise if we have initialised nothing !! */
519 reference_inst = WDML_InstanceList;
520 /* must first check if we have been given a valid instance to re-initialise !! how do we do that ? */
521 /*
522 * MS allows initialisation without specifying a callback, should we allow addition of the
523 * callback by a later call to initialise ? - if so this lot will have to change
524 */
525 while (reference_inst->next != NULL)
526 {
527 if (*pidInst == reference_inst->instanceID && pfnCallback == reference_inst->callback)
528 {
529 /* Check 1 - cannot change client-only mode if set via APPCMD_CLIENTONLY */
530
531 if (reference_inst->clientOnly)
532 {
533 if ((reference_inst->CBFflags & CBF_FAIL_ALLSVRXACTIONS) != CBF_FAIL_ALLSVRXACTIONS)
534 {
535 /* i.e. Was set to Client-only and through APPCMD_CLIENTONLY */
536
537 if (!(afCmd & APPCMD_CLIENTONLY))
538 {
539 ret = DMLERR_INVALIDPARAMETER;
540 goto theError;
541 }
542 }
543 }
544 /* Check 2 - cannot change monitor modes */
545
546 if (pInstance->monitor != reference_inst->monitor)
547 {
548 ret = DMLERR_INVALIDPARAMETER;
549 goto theError;
550 }
551
552 /* Check 3 - trying to set Client-only via APPCMD when not set so previously */
553
554 if ((afCmd&APPCMD_CLIENTONLY) && !reference_inst->clientOnly)
555 {
556 ret = DMLERR_INVALIDPARAMETER;
557 goto theError;
558 }
559 break;
560 }
561 reference_inst = reference_inst->next;
562 }
563 if (reference_inst->next == NULL)
564 {
565 ret = DMLERR_INVALIDPARAMETER;
566 goto theError;
567 }
568 /* All checked - change relevant flags */
569
570 reference_inst->CBFflags = pInstance->CBFflags;
571 reference_inst->clientOnly = pInstance->clientOnly;
572 reference_inst->monitorFlags = pInstance->monitorFlags;
573
574 HeapFree(GetProcessHeap(), 0, pInstance); /* finished - release heap space used as work store */
575
576 LeaveCriticalSection(&WDML_CritSect);
577 }
578
579 return DMLERR_NO_ERROR;
580 theError:
581 HeapFree(GetProcessHeap(), 0, pInstance);
582 LeaveCriticalSection(&WDML_CritSect);
583 return ret;
584 }
585
586 /******************************************************************************
587 * DdeInitializeA (USER32.@)
588 *
589 * See DdeInitializeW.
590 */
591 UINT WINAPI DdeInitializeA(LPDWORD pidInst, PFNCALLBACK pfnCallback,
592 DWORD afCmd, DWORD ulRes)
593 {
594 return WDML_Initialize(pidInst, pfnCallback, afCmd, ulRes, FALSE, FALSE);
595 }
596
597 /******************************************************************************
598 * DdeInitializeW [USER32.@]
599 * Registers an application with the DDEML
600 *
601 * PARAMS
602 * pidInst [I] Pointer to instance identifier
603 * pfnCallback [I] Pointer to callback function
604 * afCmd [I] Set of command and filter flags
605 * ulRes [I] Reserved
606 *
607 * RETURNS
608 * Success: DMLERR_NO_ERROR
609 * Failure: DMLERR_DLL_USAGE, DMLERR_INVALIDPARAMETER, DMLERR_SYS_ERROR
610 */
611 UINT WINAPI DdeInitializeW(LPDWORD pidInst, PFNCALLBACK pfnCallback,
612 DWORD afCmd, DWORD ulRes)
613 {
614 return WDML_Initialize(pidInst, pfnCallback, afCmd, ulRes, TRUE, FALSE);
615 }
616
617 /*****************************************************************
618 * DdeUninitialize [USER32.@] Frees DDEML resources
619 *
620 * PARAMS
621 * idInst [I] Instance identifier
622 *
623 * RETURNS
624 * Success: TRUE
625 * Failure: FALSE
626 */
627
628 BOOL WINAPI DdeUninitialize(DWORD idInst)
629 {
630 /* Stage one - check if we have a handle for this instance
631 */
632 WDML_INSTANCE* pInstance;
633 WDML_CONV* pConv;
634 WDML_CONV* pConvNext;
635
636 TRACE("(%d)\n", idInst);
637
638 /* First check instance
639 */
640 pInstance = WDML_GetInstance(idInst);
641 if (pInstance == NULL)
642 {
643 /*
644 * Needs something here to record NOT_INITIALIZED ready for DdeGetLastError
645 */
646 return FALSE;
647 }
648
649 /* first terminate all conversations client side
650 * this shall close existing links...
651 */
652 for (pConv = pInstance->convs[WDML_CLIENT_SIDE]; pConv != NULL; pConv = pConvNext)
653 {
654 pConvNext = pConv->next;
655 DdeDisconnect((HCONV)pConv);
656 }
657 if (pInstance->convs[WDML_CLIENT_SIDE])
658 FIXME("still pending conversations\n");
659
660 /* then unregister all known service names */
661 DdeNameService(idInst, 0, 0, DNS_UNREGISTER);
662
663 /* Free the nodes that were not freed by this instance
664 * and remove the nodes from the list of HSZ nodes.
665 */
666 WDML_FreeAllHSZ(pInstance);
667
668 DestroyWindow(pInstance->hwndEvent);
669
670 /* OK now delete the instance handle itself */
671
672 if (WDML_InstanceList == pInstance)
673 {
674 /* special case - the first/only entry */
675 WDML_InstanceList = pInstance->next;
676 }
677 else
678 {
679 /* general case, remove entry */
680 WDML_INSTANCE* inst;
681
682 for (inst = WDML_InstanceList; inst->next != pInstance; inst = inst->next);
683 inst->next = pInstance->next;
684 }
685 /* release the heap entry
686 */
687 HeapFree(GetProcessHeap(), 0, pInstance);
688
689 return TRUE;
690 }
691
692 /******************************************************************
693 * WDML_NotifyThreadExit
694 *
695 *
696 */
697 void WDML_NotifyThreadDetach(void)
698 {
699 WDML_INSTANCE* pInstance;
700 WDML_INSTANCE* next;
701 DWORD tid = GetCurrentThreadId();
702
703 EnterCriticalSection(&WDML_CritSect);
704 for (pInstance = WDML_InstanceList; pInstance != NULL; pInstance = next)
705 {
706 next = pInstance->next;
707 if (pInstance->threadID == tid)
708 {
709 LeaveCriticalSection(&WDML_CritSect);
710 DdeUninitialize(pInstance->instanceID);
711 EnterCriticalSection(&WDML_CritSect);
712 }
713 }
714 LeaveCriticalSection(&WDML_CritSect);
715 }
716
717 /******************************************************************
718 * WDML_InvokeCallback
719 *
720 *
721 */
722 HDDEDATA WDML_InvokeCallback(WDML_INSTANCE* pInstance, UINT uType, UINT uFmt, HCONV hConv,
723 HSZ hsz1, HSZ hsz2, HDDEDATA hdata,
724 ULONG_PTR dwData1, ULONG_PTR dwData2)
725 {
726 HDDEDATA ret;
727
728 if (pInstance == NULL)
729 return NULL;
730
731 TRACE("invoking CB%d[%p] (%x %x %p %p %p %p %lx %lx)\n",
732 pInstance->win16 ? 16 : 32, pInstance->callback, uType, uFmt,
733 hConv, hsz1, hsz2, hdata, dwData1, dwData2);
734 if (pInstance->win16)
735 {
736 ret = WDML_InvokeCallback16(pInstance->callback, uType, uFmt, hConv,
737 hsz1, hsz2, hdata, dwData1, dwData2);
738 }
739 else
740 {
741 ret = pInstance->callback(uType, uFmt, hConv, hsz1, hsz2, hdata, dwData1, dwData2);
742 }
743 TRACE("done => %p\n", ret);
744 return ret;
745 }
746
747 /*****************************************************************************
748 * WDML_GetInstance
749 *
750 * generic routine to return a pointer to the relevant DDE_HANDLE_ENTRY
751 * for an instance Id, or NULL if the entry does not exist
752 *
753 */
754 WDML_INSTANCE* WDML_GetInstance(DWORD instId)
755 {
756 WDML_INSTANCE* pInstance;
757
758 EnterCriticalSection(&WDML_CritSect);
759
760 for (pInstance = WDML_InstanceList; pInstance != NULL; pInstance = pInstance->next)
761 {
762 if (pInstance->instanceID == instId)
763 {
764 if (GetCurrentThreadId() != pInstance->threadID)
765 {
766 FIXME("Tried to get instance from wrong thread\n");
767 continue;
768 }
769 break;
770 }
771 }
772
773 LeaveCriticalSection(&WDML_CritSect);
774
775 if (!pInstance)
776 WARN("Instance entry missing for id %04x\n", instId);
777 return pInstance;
778 }
779
780 /******************************************************************
781 * WDML_GetInstanceFromWnd
782 *
783 *
784 */
785 WDML_INSTANCE* WDML_GetInstanceFromWnd(HWND hWnd)
786 {
787 return (WDML_INSTANCE*)GetWindowLongPtrW(hWnd, GWL_WDML_INSTANCE);
788 }
789
790 /******************************************************************************
791 * DdeGetLastError [USER32.@] Gets most recent error code
792 *
793 * PARAMS
794 * idInst [I] Instance identifier
795 *
796 * RETURNS
797 * Last error code
798 */
799 UINT WINAPI DdeGetLastError(DWORD idInst)
800 {
801 DWORD error_code;
802 WDML_INSTANCE* pInstance;
803
804 /* First check instance
805 */
806 pInstance = WDML_GetInstance(idInst);
807 if (pInstance == NULL)
808 {
809 error_code = DMLERR_INVALIDPARAMETER;
810 }
811 else
812 {
813 error_code = pInstance->lastError;
814 pInstance->lastError = 0;
815 }
816
817 return error_code;
818 }
819
820 /* ================================================================
821 *
822 * String management
823 *
824 * ================================================================ */
825
826
827 /******************************************************************
828 * WDML_FindNode
829 *
830 *
831 */
832 static HSZNode* WDML_FindNode(WDML_INSTANCE* pInstance, HSZ hsz)
833 {
834 HSZNode* pNode;
835
836 if (pInstance == NULL) return NULL;
837
838 for (pNode = pInstance->nodeList; pNode != NULL; pNode = pNode->next)
839 {
840 if (pNode->hsz == hsz) break;
841 }
842 if (!pNode) WARN("HSZ %p not found\n", hsz);
843 return pNode;
844 }
845
846 /******************************************************************
847 * WDML_MakeAtomFromHsz
848 *
849 * Creates a global atom from an existing HSZ
850 * Generally used before sending an HSZ as an atom to a remote app
851 */
852 ATOM WDML_MakeAtomFromHsz(HSZ hsz)
853 {
854 WCHAR nameBuffer[MAX_BUFFER_LEN];
855
856 if (GetAtomNameW(HSZ2ATOM(hsz), nameBuffer, MAX_BUFFER_LEN))
857 return GlobalAddAtomW(nameBuffer);
858 WARN("HSZ %p not found\n", hsz);
859 return 0;
860 }
861
862 /******************************************************************
863 * WDML_MakeHszFromAtom
864 *
865 * Creates a HSZ from an existing global atom
866 * Generally used while receiving a global atom and transforming it
867 * into an HSZ
868 */
869 HSZ WDML_MakeHszFromAtom(const WDML_INSTANCE* pInstance, ATOM atom)
870 {
871 WCHAR nameBuffer[MAX_BUFFER_LEN];
872
873 if (!atom) return NULL;
874
875 if (GlobalGetAtomNameW(atom, nameBuffer, MAX_BUFFER_LEN))
876 {
877 TRACE("%x => %s\n", atom, debugstr_w(nameBuffer));
878 return DdeCreateStringHandleW(pInstance->instanceID, nameBuffer, CP_WINUNICODE);
879 }
880 WARN("ATOM 0x%x not found\n", atom);
881 return 0;
882 }
883
884 /******************************************************************
885 * WDML_IncHSZ
886 *
887 *
888 */
889 BOOL WDML_IncHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
890 {
891 HSZNode* pNode;
892
893 pNode = WDML_FindNode(pInstance, hsz);
894 if (!pNode) return FALSE;
895
896 pNode->refCount++;
897 return TRUE;
898 }
899
900 /******************************************************************************
901 * WDML_DecHSZ (INTERNAL)
902 *
903 * Decrease the ref count of an HSZ. If it reaches 0, the node is removed from the list
904 * of HSZ nodes
905 * Returns -1 is the HSZ isn't found, otherwise it's the current (after --) of the ref count
906 */
907 BOOL WDML_DecHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
908 {
909 HSZNode* pPrev = NULL;
910 HSZNode* pCurrent;
911
912 for (pCurrent = pInstance->nodeList; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
913 {
914 /* If we found the node we were looking for and its ref count is one,
915 * we can remove it
916 */
917 if (pCurrent->hsz == hsz)
918 {
919 if (--pCurrent->refCount == 0)
920 {
921 if (pCurrent == pInstance->nodeList)
922 {
923 pInstance->nodeList = pCurrent->next;
924 }
925 else
926 {
927 pPrev->next = pCurrent->next;
928 }
929 HeapFree(GetProcessHeap(), 0, pCurrent);
930 DeleteAtom(HSZ2ATOM(hsz));
931 }
932 return TRUE;
933 }
934 }
935 WARN("HSZ %p not found\n", hsz);
936
937 return FALSE;
938 }
939
940 /******************************************************************************
941 * WDML_FreeAllHSZ (INTERNAL)
942 *
943 * Frees up all the strings still allocated in the list and
944 * remove all the nodes from the list of HSZ nodes.
945 */
946 void WDML_FreeAllHSZ(WDML_INSTANCE* pInstance)
947 {
948 /* Free any strings created in this instance.
949 */
950 while (pInstance->nodeList != NULL)
951 {
952 DdeFreeStringHandle(pInstance->instanceID, pInstance->nodeList->hsz);
953 }
954 }
955
956 /******************************************************************************
957 * InsertHSZNode (INTERNAL)
958 *
959 * Insert a node to the head of the list.
960 */
961 static void WDML_InsertHSZNode(WDML_INSTANCE* pInstance, HSZ hsz)
962 {
963 if (hsz != 0)
964 {
965 HSZNode* pNew = NULL;
966 /* Create a new node for this HSZ.
967 */
968 pNew = HeapAlloc(GetProcessHeap(), 0, sizeof(HSZNode));
969 if (pNew != NULL)
970 {
971 pNew->hsz = hsz;
972 pNew->next = pInstance->nodeList;
973 pNew->refCount = 1;
974 pInstance->nodeList = pNew;
975 }
976 else
977 {
978 ERR("Primary HSZ Node allocation failed - out of memory\n");
979 }
980 }
981 }
982
983 /******************************************************************
984 * WDML_QueryString
985 *
986 *
987 */
988 static int WDML_QueryString(WDML_INSTANCE* pInstance, HSZ hsz, LPVOID ptr, DWORD cchMax,
989 int codepage)
990 {
991 WCHAR pString[MAX_BUFFER_LEN];
992 int ret;
993 /* If psz is null, we have to return only the length
994 * of the string.
995 */
996 if (ptr == NULL)
997 {
998 ptr = pString;
999 cchMax = MAX_BUFFER_LEN;
1000 }
1001
1002 /* if there is no input windows returns a NULL string */
1003 if (hsz == NULL)
1004 {
1005 CHAR *t_ptr = ptr;
1006 *t_ptr = '\0';
1007 return 1;
1008 }
1009
1010 switch (codepage)
1011 {
1012 case CP_WINANSI:
1013 ret = GetAtomNameA(HSZ2ATOM(hsz), ptr, cchMax);
1014 break;
1015 case CP_WINUNICODE:
1016 ret = GetAtomNameW(HSZ2ATOM(hsz), ptr, cchMax);
1017 break;
1018 default:
1019 ERR("Unknown code page %d\n", codepage);
1020 ret = 0;
1021 }
1022 return ret;
1023 }
1024
1025 /*****************************************************************
1026 * DdeQueryStringA [USER32.@]
1027 */
1028 DWORD WINAPI DdeQueryStringA(DWORD idInst, HSZ hsz, LPSTR psz, DWORD cchMax, INT iCodePage)
1029 {
1030 DWORD ret = 0;
1031 WDML_INSTANCE* pInstance;
1032
1033 TRACE("(%d, %p, %p, %d, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1034
1035 /* First check instance
1036 */
1037 pInstance = WDML_GetInstance(idInst);
1038 if (pInstance != NULL)
1039 {
1040 if (iCodePage == 0) iCodePage = CP_WINANSI;
1041 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1042 }
1043
1044 TRACE("returning %d (%s)\n", ret, debugstr_a(psz));
1045 return ret;
1046 }
1047
1048 /*****************************************************************
1049 * DdeQueryStringW [USER32.@]
1050 */
1051
1052 DWORD WINAPI DdeQueryStringW(DWORD idInst, HSZ hsz, LPWSTR psz, DWORD cchMax, INT iCodePage)
1053 {
1054 DWORD ret = 0;
1055 WDML_INSTANCE* pInstance;
1056
1057 TRACE("(%d, %p, %p, %d, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1058
1059 /* First check instance
1060 */
1061 pInstance = WDML_GetInstance(idInst);
1062 if (pInstance != NULL)
1063 {
1064 if (iCodePage == 0) iCodePage = CP_WINUNICODE;
1065 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1066 }
1067
1068 TRACE("returning %d (%s)\n", ret, debugstr_w(psz));
1069 return ret;
1070 }
1071
1072 /******************************************************************
1073 * DML_CreateString
1074 *
1075 *
1076 */
1077 static HSZ WDML_CreateString(WDML_INSTANCE* pInstance, LPCVOID ptr, int codepage)
1078 {
1079 HSZ hsz;
1080
1081 switch (codepage)
1082 {
1083 case CP_WINANSI:
1084 hsz = ATOM2HSZ(AddAtomA(ptr));
1085 TRACE("added atom %s with HSZ %p,\n", debugstr_a(ptr), hsz);
1086 break;
1087 case CP_WINUNICODE:
1088 hsz = ATOM2HSZ(AddAtomW(ptr));
1089 TRACE("added atom %s with HSZ %p,\n", debugstr_w(ptr), hsz);
1090 break;
1091 default:
1092 ERR("Unknown code page %d\n", codepage);
1093 return 0;
1094 }
1095 WDML_InsertHSZNode(pInstance, hsz);
1096 return hsz;
1097 }
1098
1099 /*****************************************************************
1100 * DdeCreateStringHandleA [USER32.@]
1101 *
1102 * See DdeCreateStringHandleW.
1103 */
1104 HSZ WINAPI DdeCreateStringHandleA(DWORD idInst, LPCSTR psz, INT codepage)
1105 {
1106 HSZ hsz = 0;
1107 WDML_INSTANCE* pInstance;
1108
1109 TRACE("(%d,%s,%d)\n", idInst, debugstr_a(psz), codepage);
1110
1111 pInstance = WDML_GetInstance(idInst);
1112 if (pInstance)
1113 {
1114 if (codepage == 0) codepage = CP_WINANSI;
1115 hsz = WDML_CreateString(pInstance, psz, codepage);
1116 }
1117
1118 return hsz;
1119 }
1120
1121
1122 /******************************************************************************
1123 * DdeCreateStringHandleW [USER32.@] Creates handle to identify string
1124 *
1125 * PARAMS
1126 * idInst [I] Instance identifier
1127 * psz [I] Pointer to string
1128 * codepage [I] Code page identifier
1129 * RETURNS
1130 * Success: String handle
1131 * Failure: 0
1132 */
1133 HSZ WINAPI DdeCreateStringHandleW(DWORD idInst, LPCWSTR psz, INT codepage)
1134 {
1135 WDML_INSTANCE* pInstance;
1136 HSZ hsz = 0;
1137
1138 pInstance = WDML_GetInstance(idInst);
1139 if (pInstance)
1140 {
1141 if (codepage == 0) codepage = CP_WINUNICODE;
1142 hsz = WDML_CreateString(pInstance, psz, codepage);
1143 }
1144
1145 return hsz;
1146 }
1147
1148 /*****************************************************************
1149 * DdeFreeStringHandle (USER32.@)
1150 * RETURNS
1151 * success: nonzero
1152 * fail: zero
1153 */
1154 BOOL WINAPI DdeFreeStringHandle(DWORD idInst, HSZ hsz)
1155 {
1156 WDML_INSTANCE* pInstance;
1157 BOOL ret = FALSE;
1158
1159 TRACE("(%d,%p):\n", idInst, hsz);
1160
1161 /* First check instance
1162 */
1163 pInstance = WDML_GetInstance(idInst);
1164 if (pInstance)
1165 ret = WDML_DecHSZ(pInstance, hsz);
1166
1167 return ret;
1168 }
1169
1170 /*****************************************************************
1171 * DdeKeepStringHandle (USER32.@)
1172 *
1173 * RETURNS
1174 * success: nonzero
1175 * fail: zero
1176 */
1177 BOOL WINAPI DdeKeepStringHandle(DWORD idInst, HSZ hsz)
1178 {
1179 WDML_INSTANCE* pInstance;
1180 BOOL ret = FALSE;
1181
1182 TRACE("(%d,%p):\n", idInst, hsz);
1183
1184 /* First check instance
1185 */
1186 pInstance = WDML_GetInstance(idInst);
1187 if (pInstance)
1188 ret = WDML_IncHSZ(pInstance, hsz);
1189
1190 return ret;
1191 }
1192
1193 /*****************************************************************
1194 * DdeCmpStringHandles (USER32.@)
1195 *
1196 * Compares the value of two string handles. This comparison is
1197 * not case sensitive.
1198 *
1199 * PARAMS
1200 * hsz1 [I] Handle to the first string
1201 * hsz2 [I] Handle to the second string
1202 *
1203 * RETURNS
1204 * -1 The value of hsz1 is zero or less than hsz2
1205 * 0 The values of hsz 1 and 2 are the same or both zero.
1206 * 1 The value of hsz2 is zero of less than hsz1
1207 */
1208 INT WINAPI DdeCmpStringHandles(HSZ hsz1, HSZ hsz2)
1209 {
1210 WCHAR psz1[MAX_BUFFER_LEN];
1211 WCHAR psz2[MAX_BUFFER_LEN];
1212 int ret = 0;
1213 int ret1, ret2;
1214
1215 ret1 = GetAtomNameW(HSZ2ATOM(hsz1), psz1, MAX_BUFFER_LEN);
1216 ret2 = GetAtomNameW(HSZ2ATOM(hsz2), psz2, MAX_BUFFER_LEN);
1217
1218 TRACE("(%p<%s> %p<%s>);\n", hsz1, debugstr_w(psz1), hsz2, debugstr_w(psz2));
1219
1220 /* Make sure we found both strings. */
1221 if (ret1 == 0 && ret2 == 0)
1222 {
1223 /* If both are not found, return both "zero strings". */
1224 ret = 0;
1225 }
1226 else if (ret1 == 0)
1227 {
1228 /* If hsz1 is a not found, return hsz1 is "zero string". */
1229 ret = -1;
1230 }
1231 else if (ret2 == 0)
1232 {
1233 /* If hsz2 is a not found, return hsz2 is "zero string". */
1234 ret = 1;
1235 }
1236 else
1237 {
1238 /* Compare the two strings we got (case insensitive). */
1239 ret = lstrcmpiW(psz1, psz2);
1240 /* Since strcmp returns any number smaller than
1241 * 0 when the first string is found to be less than
1242 * the second one we must make sure we are returning
1243 * the proper values.
1244 */
1245 if (ret < 0)
1246 {
1247 ret = -1;
1248 }
1249 else if (ret > 0)
1250 {
1251 ret = 1;
1252 }
1253 }
1254
1255 return ret;
1256 }
1257
1258 /* ================================================================
1259 *
1260 * Data handle management
1261 *
1262 * ================================================================ */
1263
1264 /*****************************************************************
1265 * DdeCreateDataHandle (USER32.@)
1266 */
1267 HDDEDATA WINAPI DdeCreateDataHandle(DWORD idInst, LPBYTE pSrc, DWORD cb, DWORD cbOff,
1268 HSZ hszItem, UINT wFmt, UINT afCmd)
1269 {
1270 /* For now, we ignore idInst, hszItem.
1271 * The purpose of these arguments still need to be investigated.
1272 */
1273
1274 HGLOBAL hMem;
1275 LPBYTE pByte;
1276 DDE_DATAHANDLE_HEAD* pDdh;
1277 WCHAR psz[MAX_BUFFER_LEN];
1278
1279 if (!GetAtomNameW(HSZ2ATOM(hszItem), psz, MAX_BUFFER_LEN))
1280 {
1281 psz[0] = HSZ2ATOM(hszItem);
1282 psz[1] = 0;
1283 }
1284
1285 TRACE("(%d,%p,cb %d, cbOff %d,%p <%s>,fmt %04x,%x)\n",
1286 idInst, pSrc, cb, cbOff, hszItem, debugstr_w(psz), wFmt, afCmd);
1287
1288 if (afCmd != 0 && afCmd != HDATA_APPOWNED)
1289 return 0;
1290
1291 /* we use the first 4 bytes to store the size */
1292 if (!(hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, cb + cbOff + sizeof(DDE_DATAHANDLE_HEAD))))
1293 {
1294 ERR("GlobalAlloc failed\n");
1295 return 0;
1296 }
1297
1298 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock(hMem);
1299 if (!pDdh)
1300 {
1301 GlobalFree(hMem);
1302 return 0;
1303 }
1304
1305 pDdh->cfFormat = wFmt;
1306 pDdh->bAppOwned = (afCmd == HDATA_APPOWNED);
1307
1308 pByte = (LPBYTE)(pDdh + 1);
1309 if (pSrc)
1310 {
1311 memcpy(pByte, pSrc + cbOff, cb);
1312 }
1313 GlobalUnlock(hMem);
1314
1315 TRACE("=> %p\n", hMem);
1316 return (HDDEDATA)hMem;
1317 }
1318
1319 /*****************************************************************
1320 *
1321 * DdeAddData (USER32.@)
1322 */
1323 HDDEDATA WINAPI DdeAddData(HDDEDATA hData, LPBYTE pSrc, DWORD cb, DWORD cbOff)
1324 {
1325 DWORD old_sz, new_sz;
1326 LPBYTE pDst;
1327
1328 TRACE("(%p,%p,cb %d, cbOff %d)\n", hData, pSrc, cb, cbOff);
1329
1330 pDst = DdeAccessData(hData, &old_sz);
1331 if (!pDst) return 0;
1332
1333 new_sz = cb + cbOff;
1334 if (new_sz > old_sz)
1335 {
1336 DdeUnaccessData(hData);
1337 hData = GlobalReAlloc(hData, new_sz + sizeof(DDE_DATAHANDLE_HEAD),
1338 GMEM_MOVEABLE | GMEM_DDESHARE);
1339 pDst = DdeAccessData(hData, &old_sz);
1340 }
1341
1342 if (!pDst) return 0;
1343
1344 memcpy(pDst + cbOff, pSrc, cb);
1345 DdeUnaccessData(hData);
1346 return hData;
1347 }
1348
1349 /******************************************************************************
1350 * DdeGetData [USER32.@] Copies data from DDE object to local buffer
1351 *
1352 *
1353 * PARAMS
1354 * hData [I] Handle to DDE object
1355 * pDst [I] Pointer to destination buffer
1356 * cbMax [I] Amount of data to copy
1357 * cbOff [I] Offset to beginning of data
1358 *
1359 * RETURNS
1360 * Size of memory object associated with handle
1361 */
1362 DWORD WINAPI DdeGetData(HDDEDATA hData, LPBYTE pDst, DWORD cbMax, DWORD cbOff)
1363 {
1364 DWORD dwSize, dwRet;
1365 LPBYTE pByte;
1366
1367 TRACE("(%p,%p,%d,%d)\n", hData, pDst, cbMax, cbOff);
1368
1369 pByte = DdeAccessData(hData, &dwSize);
1370
1371 if (pByte)
1372 {
1373 if (!pDst)
1374 {
1375 dwRet = dwSize;
1376 }
1377 else if (cbOff + cbMax < dwSize)
1378 {
1379 dwRet = cbMax;
1380 }
1381 else if (cbOff < dwSize)
1382 {
1383 dwRet = dwSize - cbOff;
1384 }
1385 else
1386 {
1387 dwRet = 0;
1388 }
1389 if (pDst && dwRet != 0)
1390 {
1391 memcpy(pDst, pByte + cbOff, dwRet);
1392 }
1393 DdeUnaccessData(hData);
1394 }
1395 else
1396 {
1397 dwRet = 0;
1398 }
1399 return dwRet;
1400 }
1401
1402 /*****************************************************************
1403 * DdeAccessData (USER32.@)
1404 */
1405 LPBYTE WINAPI DdeAccessData(HDDEDATA hData, LPDWORD pcbDataSize)
1406 {
1407 HGLOBAL hMem = hData;
1408 DDE_DATAHANDLE_HEAD* pDdh;
1409
1410 TRACE("(%p,%p)\n", hData, pcbDataSize);
1411
1412 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock(hMem);
1413 if (pDdh == NULL)
1414 {
1415 ERR("Failed on GlobalLock(%p)\n", hMem);
1416 return 0;
1417 }
1418
1419 if (pcbDataSize != NULL)
1420 {
1421 *pcbDataSize = GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD);
1422 }
1423 TRACE("=> %p (%lu) fmt %04x\n", pDdh + 1, GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD), pDdh->cfFormat);
1424 return (LPBYTE)(pDdh + 1);
1425 }
1426
1427 /*****************************************************************
1428 * DdeUnaccessData (USER32.@)
1429 */
1430 BOOL WINAPI DdeUnaccessData(HDDEDATA hData)
1431 {
1432 HGLOBAL hMem = hData;
1433
1434 TRACE("(%p)\n", hData);
1435
1436 GlobalUnlock(hMem);
1437
1438 return TRUE;
1439 }
1440
1441 /*****************************************************************
1442 * DdeFreeDataHandle (USER32.@)
1443 */
1444 BOOL WINAPI DdeFreeDataHandle(HDDEDATA hData)
1445 {
1446 TRACE("(%p)\n", hData);
1447 return GlobalFree(hData) == 0;
1448 }
1449
1450 /******************************************************************
1451 * WDML_IsAppOwned
1452 *
1453 *
1454 */
1455 BOOL WDML_IsAppOwned(HDDEDATA hData)
1456 {
1457 DDE_DATAHANDLE_HEAD* pDdh;
1458 BOOL ret = FALSE;
1459
1460 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock(hData);
1461 if (pDdh != NULL)
1462 {
1463 ret = pDdh->bAppOwned;
1464 GlobalUnlock(hData);
1465 }
1466 return ret;
1467 }
1468
1469 /* ================================================================
1470 *
1471 * Global <=> Data handle management
1472 *
1473 * ================================================================ */
1474
1475 /* Note: we use a DDEDATA, but layout of DDEDATA, DDEADVISE and DDEPOKE structures is similar:
1476 * offset size
1477 * (bytes) (bits) comment
1478 * 0 16 bit fields for options (release, ackreq, response...)
1479 * 2 16 clipboard format
1480 * 4 ? data to be used
1481 */
1482 HDDEDATA WDML_Global2DataHandle(HGLOBAL hMem, WINE_DDEHEAD* p)
1483 {
1484 DDEDATA* pDd;
1485 HDDEDATA ret = 0;
1486 DWORD size;
1487
1488 if (hMem)
1489 {
1490 pDd = GlobalLock(hMem);
1491 size = GlobalSize(hMem) - sizeof(WINE_DDEHEAD);
1492 if (pDd)
1493 {
1494 if (p) memcpy(p, pDd, sizeof(WINE_DDEHEAD));
1495 switch (pDd->cfFormat)
1496 {
1497 default:
1498 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1499 pDd->cfFormat, hMem);
1500 /* fall thru */
1501 case 0:
1502 case CF_TEXT:
1503 ret = DdeCreateDataHandle(0, pDd->Value, size, 0, 0, pDd->cfFormat, 0);
1504 break;
1505 case CF_BITMAP:
1506 if (size >= sizeof(BITMAP))
1507 {
1508 BITMAP* bmp = (BITMAP*)pDd->Value;
1509 int count = bmp->bmWidthBytes * bmp->bmHeight * bmp->bmPlanes;
1510 if (size >= sizeof(BITMAP) + count)
1511 {
1512 HBITMAP hbmp;
1513
1514 if ((hbmp = CreateBitmap(bmp->bmWidth, bmp->bmHeight,
1515 bmp->bmPlanes, bmp->bmBitsPixel,
1516 pDd->Value + sizeof(BITMAP))))
1517 {
1518 ret = DdeCreateDataHandle(0, (LPBYTE)&hbmp, sizeof(hbmp),
1519 0, 0, CF_BITMAP, 0);
1520 }
1521 else ERR("Can't create bmp\n");
1522 }
1523 else
1524 {
1525 ERR("Wrong count: %u / %d\n", size, count);
1526 }
1527 } else ERR("No bitmap header\n");
1528 break;
1529 }
1530 GlobalUnlock(hMem);
1531 }
1532 }
1533 return ret;
1534 }
1535
1536 /******************************************************************
1537 * WDML_DataHandle2Global
1538 *
1539 *
1540 */
1541 HGLOBAL WDML_DataHandle2Global(HDDEDATA hDdeData, BOOL fResponse, BOOL fRelease,
1542 BOOL fDeferUpd, BOOL fAckReq)
1543 {
1544 DDE_DATAHANDLE_HEAD* pDdh;
1545 DWORD dwSize;
1546 HGLOBAL hMem = 0;
1547
1548 dwSize = GlobalSize((HGLOBAL)hDdeData) - sizeof(DDE_DATAHANDLE_HEAD);
1549 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock((HGLOBAL)hDdeData);
1550 if (dwSize && pDdh)
1551 {
1552 WINE_DDEHEAD* wdh = NULL;
1553
1554 switch (pDdh->cfFormat)
1555 {
1556 default:
1557 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1558 pDdh->cfFormat, hDdeData);
1559 /* fall thru */
1560 case 0:
1561 case CF_TEXT:
1562 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, sizeof(WINE_DDEHEAD) + dwSize);
1563 if (hMem && (wdh = GlobalLock(hMem)))
1564 {
1565 memcpy(wdh + 1, pDdh + 1, dwSize);
1566 }
1567 break;
1568 case CF_BITMAP:
1569 if (dwSize >= sizeof(HBITMAP))
1570 {
1571 BITMAP bmp;
1572 DWORD count;
1573 HBITMAP hbmp = *(HBITMAP*)(pDdh + 1);
1574
1575 if (GetObjectW(hbmp, sizeof(bmp), &bmp))
1576 {
1577 count = bmp.bmWidthBytes * bmp.bmHeight;
1578 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE,
1579 sizeof(WINE_DDEHEAD) + sizeof(bmp) + count);
1580 if (hMem && (wdh = GlobalLock(hMem)))
1581 {
1582 memcpy(wdh + 1, &bmp, sizeof(bmp));
1583 GetBitmapBits(hbmp, count, ((char*)(wdh + 1)) + sizeof(bmp));
1584 }
1585 }
1586 }
1587 break;
1588 }
1589 if (wdh)
1590 {
1591 wdh->unused = 0;
1592 wdh->fResponse = fResponse;
1593 wdh->fRelease = fRelease;
1594 wdh->fDeferUpd = fDeferUpd;
1595 wdh->fAckReq = fAckReq;
1596 wdh->cfFormat = pDdh->cfFormat;
1597 GlobalUnlock(hMem);
1598 }
1599 GlobalUnlock((HGLOBAL)hDdeData);
1600 }
1601
1602 return hMem;
1603 }
1604
1605 /* ================================================================
1606 *
1607 * Server management
1608 *
1609 * ================================================================ */
1610
1611 /******************************************************************
1612 * WDML_AddServer
1613 *
1614 *
1615 */
1616 WDML_SERVER* WDML_AddServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1617 {
1618 static const WCHAR fmtW[] = {'%','s','(','0','x','%','0','8','l','x',')',0};
1619 WDML_SERVER* pServer;
1620 WCHAR buf1[256];
1621 WCHAR buf2[256];
1622
1623 pServer = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_SERVER));
1624 if (pServer == NULL) return NULL;
1625
1626 pServer->hszService = hszService;
1627 WDML_IncHSZ(pInstance, hszService);
1628
1629 DdeQueryStringW(pInstance->instanceID, hszService, buf1, 256, CP_WINUNICODE);
1630 snprintfW(buf2, 256, fmtW, buf1, GetCurrentProcessId());
1631 pServer->hszServiceSpec = DdeCreateStringHandleW(pInstance->instanceID, buf2, CP_WINUNICODE);
1632
1633 pServer->atomService = WDML_MakeAtomFromHsz(pServer->hszService);
1634 pServer->atomServiceSpec = WDML_MakeAtomFromHsz(pServer->hszServiceSpec);
1635
1636 pServer->filterOn = TRUE;
1637
1638 pServer->next = pInstance->servers;
1639 pInstance->servers = pServer;
1640 return pServer;
1641 }
1642
1643 /******************************************************************
1644 * WDML_RemoveServer
1645 *
1646 *
1647 */
1648 void WDML_RemoveServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1649 {
1650 WDML_SERVER* pPrev = NULL;
1651 WDML_SERVER* pServer = NULL;
1652 WDML_CONV* pConv;
1653 WDML_CONV* pConvNext;
1654
1655 pServer = pInstance->servers;
1656
1657 while (pServer != NULL)
1658 {
1659 if (DdeCmpStringHandles(pServer->hszService, hszService) == 0)
1660 {
1661 WDML_BroadcastDDEWindows(WDML_szEventClass, WM_WDML_UNREGISTER,
1662 pServer->atomService, pServer->atomServiceSpec);
1663 /* terminate all conversations for given topic */
1664 for (pConv = pInstance->convs[WDML_SERVER_SIDE]; pConv != NULL; pConv = pConvNext)
1665 {
1666 pConvNext = pConv->next;
1667 if (DdeCmpStringHandles(pConv->hszService, hszService) == 0)
1668 {
1669 HWND client = pConv->hwndClient, server = pConv->hwndServer;
1670 WDML_RemoveConv(pConv, WDML_SERVER_SIDE);
1671 /* don't care about return code (whether client window is present or not) */
1672 PostMessageW(client, WM_DDE_TERMINATE, (WPARAM)server, 0);
1673 }
1674 }
1675 if (pServer == pInstance->servers)
1676 {
1677 pInstance->servers = pServer->next;
1678 }
1679 else
1680 {
1681 pPrev->next = pServer->next;
1682 }
1683
1684 DestroyWindow(pServer->hwndServer);
1685 WDML_DecHSZ(pInstance, pServer->hszServiceSpec);
1686 WDML_DecHSZ(pInstance, pServer->hszService);
1687
1688 GlobalDeleteAtom(pServer->atomService);
1689 GlobalDeleteAtom(pServer->atomServiceSpec);
1690
1691 HeapFree(GetProcessHeap(), 0, pServer);
1692 break;
1693 }
1694
1695 pPrev = pServer;
1696 pServer = pServer->next;
1697 }
1698 }
1699
1700 /*****************************************************************************
1701 * WDML_FindServer
1702 *
1703 * generic routine to return a pointer to the relevant ServiceNode
1704 * for a given service name, or NULL if the entry does not exist
1705 *
1706 */
1707 WDML_SERVER* WDML_FindServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1708 {
1709 WDML_SERVER* pServer;
1710
1711 for (pServer = pInstance->servers; pServer != NULL; pServer = pServer->next)
1712 {
1713 if (hszService == pServer->hszService)
1714 {
1715 return pServer;
1716 }
1717 }
1718 TRACE("Service name missing\n");
1719 return NULL;
1720 }
1721
1722 /* ================================================================
1723 *
1724 * Conversation management
1725 *
1726 * ================================================================ */
1727
1728 /******************************************************************
1729 * WDML_AddConv
1730 *
1731 *
1732 */
1733 WDML_CONV* WDML_AddConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1734 HSZ hszService, HSZ hszTopic, HWND hwndClient, HWND hwndServer)
1735 {
1736 WDML_CONV* pConv;
1737
1738 /* no conversation yet, add it */
1739 pConv = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_CONV));
1740 if (!pConv) return NULL;
1741
1742 pConv->instance = pInstance;
1743 WDML_IncHSZ(pInstance, pConv->hszService = hszService);
1744 WDML_IncHSZ(pInstance, pConv->hszTopic = hszTopic);
1745 pConv->magic = WDML_CONV_MAGIC;
1746 pConv->hwndServer = hwndServer;
1747 pConv->hwndClient = hwndClient;
1748 pConv->transactions = NULL;
1749 pConv->hUser = 0;
1750 pConv->wStatus = (side == WDML_CLIENT_SIDE) ? ST_CLIENT : 0L;
1751 pConv->wStatus |= pInstance->wStatus;
1752 /* check if both side of the conversation are of the same instance */
1753 if (GetWindowThreadProcessId(hwndClient, NULL) == GetWindowThreadProcessId(hwndServer, NULL) &&
1754 WDML_GetInstanceFromWnd(hwndClient) == WDML_GetInstanceFromWnd(hwndServer))
1755 {
1756 pConv->wStatus |= ST_ISSELF;
1757 }
1758 pConv->wConvst = XST_NULL;
1759
1760 pConv->next = pInstance->convs[side];
1761 pInstance->convs[side] = pConv;
1762
1763 TRACE("pConv->wStatus %04x pInstance(%p)\n", pConv->wStatus, pInstance);
1764
1765 return pConv;
1766 }
1767
1768 /******************************************************************
1769 * WDML_FindConv
1770 *
1771 *
1772 */
1773 WDML_CONV* WDML_FindConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1774 HSZ hszService, HSZ hszTopic)
1775 {
1776 WDML_CONV* pCurrent = NULL;
1777
1778 for (pCurrent = pInstance->convs[side]; pCurrent != NULL; pCurrent = pCurrent->next)
1779 {
1780 if (DdeCmpStringHandles(pCurrent->hszService, hszService) == 0 &&
1781 DdeCmpStringHandles(pCurrent->hszTopic, hszTopic) == 0)
1782 {
1783 return pCurrent;
1784 }
1785
1786 }
1787 return NULL;
1788 }
1789
1790 /******************************************************************
1791 * WDML_RemoveConv
1792 *
1793 *
1794 */
1795 void WDML_RemoveConv(WDML_CONV* pRef, WDML_SIDE side)
1796 {
1797 WDML_CONV* pPrev = NULL;
1798 WDML_CONV* pCurrent;
1799 WDML_XACT* pXAct;
1800 WDML_XACT* pXActNext;
1801 HWND hWnd;
1802
1803 if (!pRef)
1804 return;
1805
1806 /* remove any pending transaction */
1807 for (pXAct = pRef->transactions; pXAct != NULL; pXAct = pXActNext)
1808 {
1809 pXActNext = pXAct->next;
1810 WDML_FreeTransaction(pRef->instance, pXAct, TRUE);
1811 }
1812
1813 WDML_RemoveAllLinks(pRef->instance, pRef, side);
1814
1815 /* FIXME: should we keep the window around ? it seems so (at least on client side
1816 * to let QueryConvInfo work after conv termination, but also to implement
1817 * DdeReconnect...
1818 */
1819 /* destroy conversation window, but first remove pConv from hWnd.
1820 * this would help the wndProc do appropriate handling upon a WM_DESTROY message
1821 */
1822 hWnd = (side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer;
1823 SetWindowLongPtrW(hWnd, GWL_WDML_CONVERSATION, 0);
1824
1825 DestroyWindow((side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer);
1826
1827 WDML_DecHSZ(pRef->instance, pRef->hszService);
1828 WDML_DecHSZ(pRef->instance, pRef->hszTopic);
1829
1830 for (pCurrent = pRef->instance->convs[side]; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
1831 {
1832 if (pCurrent == pRef)
1833 {
1834 if (pCurrent == pRef->instance->convs[side])
1835 {
1836 pRef->instance->convs[side] = pCurrent->next;
1837 }
1838 else
1839 {
1840 pPrev->next = pCurrent->next;
1841 }
1842 pCurrent->magic = 0;
1843 HeapFree(GetProcessHeap(), 0, pCurrent);
1844 break;
1845 }
1846 }
1847 }
1848
1849 /******************************************************************
1850 * WDML_EnableCallback
1851 */
1852 static BOOL WDML_EnableCallback(WDML_CONV *pConv, UINT wCmd)
1853 {
1854 if (wCmd == EC_DISABLE)
1855 {
1856 pConv->wStatus |= ST_BLOCKED;
1857 TRACE("EC_DISABLE: conv %p status flags %04x\n", pConv, pConv->wStatus);
1858 return TRUE;
1859 }
1860
1861 if (wCmd == EC_QUERYWAITING)
1862 return pConv->transactions ? TRUE : FALSE;
1863
1864 if (wCmd != EC_ENABLEALL && wCmd != EC_ENABLEONE)
1865 {
1866 FIXME("Unknown command code %04x\n", wCmd);
1867 return FALSE;
1868 }
1869
1870 if (wCmd == EC_ENABLEALL)
1871 {
1872 pConv->wStatus &= ~ST_BLOCKED;
1873 TRACE("EC_ENABLEALL: conv %p status flags %04x\n", pConv, pConv->wStatus);
1874 }
1875
1876 while (pConv->transactions)
1877 {
1878 WDML_XACT *pXAct = pConv->transactions;
1879
1880 if (pConv->wStatus & ST_CLIENT)
1881 {
1882 /* transaction should be in the queue until handled */
1883 WDML_ClientHandle(pConv, pXAct, 0, NULL);
1884 WDML_UnQueueTransaction(pConv, pXAct);
1885 }
1886 else
1887 {
1888 /* transaction should be removed from the queue before handling */
1889 WDML_UnQueueTransaction(pConv, pXAct);
1890 WDML_ServerHandle(pConv, pXAct);
1891 }
1892
1893 WDML_FreeTransaction(pConv->instance, pXAct, TRUE);
1894
1895 if (wCmd == EC_ENABLEONE) break;
1896 }
1897 return TRUE;
1898 }
1899
1900 /*****************************************************************
1901 * DdeEnableCallback (USER32.@)
1902 */
1903 BOOL WINAPI DdeEnableCallback(DWORD idInst, HCONV hConv, UINT wCmd)
1904 {
1905 BOOL ret = FALSE;
1906 WDML_CONV *pConv;
1907
1908 TRACE("(%d, %p, %04x)\n", idInst, hConv, wCmd);
1909
1910 if (hConv)
1911 {
1912 pConv = WDML_GetConv(hConv, TRUE);
1913
1914 if (pConv && pConv->instance->instanceID == idInst)
1915 ret = WDML_EnableCallback(pConv, wCmd);
1916 }
1917 else
1918 {
1919 WDML_INSTANCE *pInstance = WDML_GetInstance(idInst);
1920
1921 if (!pInstance)
1922 return FALSE;
1923
1924 TRACE("adding flags %04x to instance %p\n", wCmd, pInstance);
1925 pInstance->wStatus |= wCmd;
1926
1927 if (wCmd == EC_DISABLE)
1928 {
1929 pInstance->wStatus |= ST_BLOCKED;
1930 TRACE("EC_DISABLE: inst %p status flags %04x\n", pInstance, pInstance->wStatus);
1931 }
1932 else if (wCmd == EC_ENABLEALL)
1933 {
1934 pInstance->wStatus &= ~ST_BLOCKED;
1935 TRACE("EC_ENABLEALL: inst %p status flags %04x\n", pInstance, pInstance->wStatus);
1936 }
1937
1938 ret = TRUE;
1939
1940 for (pConv = pInstance->convs[WDML_CLIENT_SIDE]; pConv != NULL; pConv = pConv->next)
1941 {
1942 ret = WDML_EnableCallback(pConv, wCmd);
1943 if (ret && wCmd == EC_QUERYWAITING) break;
1944 }
1945 }
1946
1947 return ret;
1948 }
1949
1950 /******************************************************************
1951 * WDML_GetConv
1952 *
1953 *
1954 */
1955 WDML_CONV* WDML_GetConv(HCONV hConv, BOOL checkConnected)
1956 {
1957 WDML_CONV* pConv = (WDML_CONV*)hConv;
1958
1959 /* FIXME: should do better checking */
1960 if (pConv == NULL || pConv->magic != WDML_CONV_MAGIC) return NULL;
1961
1962 if (!pConv->instance || pConv->instance->threadID != GetCurrentThreadId())
1963 {
1964 WARN("wrong thread ID\n");
1965 pConv->instance->lastError = DMLERR_INVALIDPARAMETER; /* FIXME: check */
1966 return NULL;
1967 }
1968
1969 if (checkConnected && !(pConv->wStatus & ST_CONNECTED))
1970 {
1971 WARN("found conv but ain't connected\n");
1972 pConv->instance->lastError = DMLERR_NO_CONV_ESTABLISHED;
1973 return NULL;
1974 }
1975
1976 return pConv;
1977 }
1978
1979 /******************************************************************
1980 * WDML_GetConvFromWnd
1981 *
1982 *
1983 */
1984 WDML_CONV* WDML_GetConvFromWnd(HWND hWnd)
1985 {
1986 return (WDML_CONV*)GetWindowLongPtrW(hWnd, GWL_WDML_CONVERSATION);
1987 }
1988
1989 /******************************************************************
1990 * WDML_PostAck
1991 *
1992 *
1993 */
1994 BOOL WDML_PostAck(WDML_CONV* pConv, WDML_SIDE side, WORD appRetCode,
1995 BOOL fBusy, BOOL fAck, UINT_PTR pmt, LPARAM lParam, UINT oldMsg)
1996 {
1997 DDEACK ddeAck;
1998 HWND from, to;
1999
2000 if (side == WDML_SERVER_SIDE)
2001 {
2002 from = pConv->hwndServer;
2003 to = pConv->hwndClient;
2004 }
2005 else
2006 {
2007 to = pConv->hwndServer;
2008 from = pConv->hwndClient;
2009 }
2010
2011 ddeAck.bAppReturnCode = appRetCode;
2012 ddeAck.reserved = 0;
2013 ddeAck.fBusy = fBusy;
2014 ddeAck.fAck = fAck;
2015
2016 TRACE("Posting a %s ack\n", ddeAck.fAck ? "positive" : "negative");
2017
2018 lParam = (lParam) ? ReuseDDElParam(lParam, oldMsg, WM_DDE_ACK, *(WORD*)&ddeAck, pmt) :
2019 PackDDElParam(WM_DDE_ACK, *(WORD*)&ddeAck, pmt);
2020 if (!PostMessageW(to, WM_DDE_ACK, (WPARAM)from, lParam))
2021 {
2022 pConv->wStatus &= ~ST_CONNECTED;
2023 pConv->instance->lastError = DMLERR_POSTMSG_FAILED;
2024 FreeDDElParam(WM_DDE_ACK, lParam);
2025 return FALSE;
2026 }
2027 return TRUE;
2028 }
2029
2030 /*****************************************************************
2031 * DdeSetUserHandle (USER32.@)
2032 */
2033 BOOL WINAPI DdeSetUserHandle(HCONV hConv, DWORD id, DWORD hUser)
2034 {
2035 WDML_CONV* pConv;
2036
2037 pConv = WDML_GetConv(hConv, FALSE);
2038 if (pConv == NULL)
2039 return FALSE;
2040
2041 if (id == QID_SYNC)
2042 {
2043 pConv->hUser = hUser;
2044 }
2045 else
2046 {
2047 WDML_XACT* pXAct;
2048
2049 pXAct = WDML_FindTransaction(pConv, id);
2050 if (pXAct)
2051 {
2052 pXAct->hUser = hUser;
2053 }
2054 else
2055 {
2056 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2057 return FALSE;
2058 }
2059 }
2060 return TRUE;
2061 }
2062
2063 /******************************************************************
2064 * WDML_GetLocalConvInfo
2065 *
2066 *
2067 */
2068 static BOOL WDML_GetLocalConvInfo(WDML_CONV* pConv, CONVINFO* ci, DWORD id)
2069 {
2070 BOOL ret = TRUE;
2071 WDML_LINK* pLink;
2072 WDML_SIDE side;
2073
2074 ci->hConvPartner = (pConv->wStatus & ST_ISLOCAL) ? (HCONV)((ULONG_PTR)pConv | 1) : 0;
2075 ci->hszSvcPartner = pConv->hszService;
2076 ci->hszServiceReq = pConv->hszService; /* FIXME: they shouldn't be the same, should they ? */
2077 ci->hszTopic = pConv->hszTopic;
2078 ci->wStatus = pConv->wStatus;
2079
2080 side = (pConv->wStatus & ST_CLIENT) ? WDML_CLIENT_SIDE : WDML_SERVER_SIDE;
2081
2082 for (pLink = pConv->instance->links[side]; pLink != NULL; pLink = pLink->next)
2083 {
2084 if (pLink->hConv == (HCONV)pConv)
2085 {
2086 ci->wStatus |= ST_ADVISE;
2087 break;
2088 }
2089 }
2090
2091 /* FIXME: non handled status flags:
2092 ST_BLOCKED
2093 ST_BLOCKNEXT
2094 ST_INLIST
2095 */
2096
2097 ci->wConvst = pConv->wConvst; /* FIXME */
2098
2099 ci->wLastError = 0; /* FIXME: note it's not the instance last error */
2100 ci->hConvList = 0;
2101 ci->ConvCtxt = pConv->convContext;
2102 if (ci->wStatus & ST_CLIENT)
2103 {
2104 ci->hwnd = pConv->hwndClient;
2105 ci->hwndPartner = pConv->hwndServer;
2106 }
2107 else
2108 {
2109 ci->hwnd = pConv->hwndServer;
2110 ci->hwndPartner = pConv->hwndClient;
2111 }
2112 if (id == QID_SYNC)
2113 {
2114 ci->hUser = pConv->hUser;
2115 ci->hszItem = 0;
2116 ci->wFmt = 0;
2117 ci->wType = 0;
2118 }
2119 else
2120 {
2121 WDML_XACT* pXAct;
2122
2123 pXAct = WDML_FindTransaction(pConv, id);
2124 if (pXAct)
2125 {
2126 ci->hUser = pXAct->hUser;
2127 ci->hszItem = pXAct->hszItem;
2128 ci->wFmt = pXAct->wFmt;
2129 ci->wType = pXAct->wType;
2130 }
2131 else
2132 {
2133 ret = 0;
2134 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2135 }
2136 }
2137 return ret;
2138 }
2139
2140 /******************************************************************
2141 * DdeQueryConvInfo (USER32.@)
2142 *
2143 * FIXME: Set last DDE error on failure.
2144 */
2145 UINT WINAPI DdeQueryConvInfo(HCONV hConv, DWORD id, PCONVINFO lpConvInfo)
2146 {
2147 UINT ret = lpConvInfo->cb;
2148 CONVINFO ci;
2149 WDML_CONV* pConv;
2150
2151 TRACE("(%p,%x,%p)\n", hConv, id, lpConvInfo);
2152
2153 if (!hConv)
2154 {
2155 FIXME("hConv is NULL\n");
2156 return 0;
2157 }
2158
2159 pConv = WDML_GetConv(hConv, FALSE);
2160 if (pConv != NULL)
2161 {
2162 if (!WDML_GetLocalConvInfo(pConv, &ci, id))
2163 ret = 0;
2164 }
2165 else
2166 {
2167 if ((ULONG_PTR)hConv & 1)
2168 {
2169 pConv = WDML_GetConv((HCONV)((ULONG_PTR)hConv & ~1), FALSE);
2170 if (pConv != NULL)
2171 FIXME("Request on remote conversation information is not implemented yet\n");
2172 }
2173 ret = 0;
2174 }
2175
2176 if (ret != 0)
2177 memcpy(lpConvInfo, &ci, min((size_t)lpConvInfo->cb, sizeof(ci)));
2178 return ret;
2179 }
2180
2181 /* ================================================================
2182 *
2183 * Link (hot & warm) management
2184 *
2185 * ================================================================ */
2186
2187 /******************************************************************
2188 * WDML_AddLink
2189 *
2190 *
2191 */
2192 void WDML_AddLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2193 UINT wType, HSZ hszItem, UINT wFmt)
2194 {
2195 WDML_LINK* pLink;
2196
2197 pLink = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_LINK));
2198 if (pLink == NULL)
2199 {
2200 ERR("OOM\n");
2201 return;
2202 }
2203
2204 pLink->hConv = hConv;
2205 pLink->transactionType = wType;
2206 WDML_IncHSZ(pInstance, pLink->hszItem = hszItem);
2207 pLink->uFmt = wFmt;
2208 pLink->next = pInstance->links[side];
2209 pInstance->links[side] = pLink;
2210 }
2211
2212 /******************************************************************
2213 * WDML_RemoveLink
2214 *
2215 *
2216 */
2217 void WDML_RemoveLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2218 HSZ hszItem, UINT uFmt)
2219 {
2220 WDML_LINK* pPrev = NULL;
2221 WDML_LINK* pCurrent = NULL;
2222
2223 pCurrent = pInstance->links[side];
2224
2225 while (pCurrent != NULL)
2226 {
2227 if (pCurrent->hConv == hConv &&
2228 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2229 pCurrent->uFmt == uFmt)
2230 {
2231 if (pCurrent == pInstance->links[side])
2232 {
2233 pInstance->links[side] = pCurrent->next;
2234 }
2235 else
2236 {
2237 pPrev->next = pCurrent->next;
2238 }
2239
2240 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2241 HeapFree(GetProcessHeap(), 0, pCurrent);
2242 break;
2243 }
2244
2245 pPrev = pCurrent;
2246 pCurrent = pCurrent->next;
2247 }
2248 }
2249
2250 /* this function is called to remove all links related to the conv.
2251 It should be called from both client and server when terminating
2252 the conversation.
2253 */
2254 /******************************************************************
2255 * WDML_RemoveAllLinks
2256 *
2257 *
2258 */
2259 void WDML_RemoveAllLinks(WDML_INSTANCE* pInstance, WDML_CONV* pConv, WDML_SIDE side)
2260 {
2261 WDML_LINK* pPrev = NULL;
2262 WDML_LINK* pCurrent = NULL;
2263 WDML_LINK* pNext = NULL;
2264
2265 pCurrent = pInstance->links[side];
2266
2267 while (pCurrent != NULL)
2268 {
2269 if (pCurrent->hConv == (HCONV)pConv)
2270 {
2271 if (pCurrent == pInstance->links[side])
2272 {
2273 pInstance->links[side] = pCurrent->next;
2274 pNext = pCurrent->next;
2275 }
2276 else
2277 {
2278 pPrev->next = pCurrent->next;
2279 pNext = pCurrent->next;
2280 }
2281
2282 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2283
2284 HeapFree(GetProcessHeap(), 0, pCurrent);
2285 pCurrent = NULL;
2286 }
2287
2288 if (pCurrent)
2289 {
2290 pPrev = pCurrent;
2291 pCurrent = pCurrent->next;
2292 }
2293 else
2294 {
2295 pCurrent = pNext;
2296 }
2297 }
2298 }
2299
2300 /******************************************************************
2301 * WDML_FindLink
2302 *
2303 *
2304 */
2305 WDML_LINK* WDML_FindLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2306 HSZ hszItem, BOOL use_fmt, UINT uFmt)
2307 {
2308 WDML_LINK* pCurrent = NULL;
2309
2310 for (pCurrent = pInstance->links[side]; pCurrent != NULL; pCurrent = pCurrent->next)
2311 {
2312 /* we don't need to check for transaction type as it can be altered */
2313
2314 if (pCurrent->hConv == hConv &&
2315 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2316 (!use_fmt || pCurrent->uFmt == uFmt))
2317 {
2318 break;
2319 }
2320
2321 }
2322
2323 return pCurrent;
2324 }
2325
2326 /* ================================================================
2327 *
2328 * Transaction management
2329 *
2330 * ================================================================ */
2331
2332 /******************************************************************
2333 * WDML_AllocTransaction
2334 *
2335 * Alloc a transaction structure for handling the message ddeMsg
2336 */
2337 WDML_XACT* WDML_AllocTransaction(WDML_INSTANCE* pInstance, UINT ddeMsg,
2338 UINT wFmt, HSZ hszItem)
2339 {
2340 WDML_XACT* pXAct;
2341 static WORD tid = 1; /* FIXME: wrap around */
2342
2343 pXAct = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_XACT));
2344 if (!pXAct)
2345 {
2346 pInstance->lastError = DMLERR_MEMORY_ERROR;
2347 return NULL;
2348 }
2349
2350 pXAct->xActID = tid++;
2351 pXAct->ddeMsg = ddeMsg;
2352 pXAct->hDdeData = 0;
2353 pXAct->hUser = 0;
2354 pXAct->next = NULL;
2355 pXAct->wType = 0;
2356 pXAct->wFmt = wFmt;
2357 if ((pXAct->hszItem = hszItem)) WDML_IncHSZ(pInstance, pXAct->hszItem);
2358 pXAct->atom = 0;
2359 pXAct->hMem = 0;
2360 pXAct->lParam = 0;
2361
2362 return pXAct;
2363 }
2364
2365 /******************************************************************
2366 * WDML_QueueTransaction
2367 *
2368 * Adds a transaction to the list of transaction
2369 */
2370 void WDML_QueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2371 {
2372 WDML_XACT** pt;
2373
2374 /* advance to last in queue */
2375 for (pt = &pConv->transactions; *pt != NULL; pt = &(*pt)->next);
2376 *pt = pXAct;
2377 }
2378
2379 /******************************************************************
2380 * WDML_UnQueueTransaction
2381 *
2382 *
2383 */
2384 BOOL WDML_UnQueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2385 {
2386 WDML_XACT** pt;
2387
2388 for (pt = &pConv->transactions; *pt; pt = &(*pt)->next)
2389 {
2390 if (*pt == pXAct)
2391 {
2392 *pt = pXAct->next;
2393 return TRUE;
2394 }
2395 }
2396 return FALSE;
2397 }
2398
2399 /******************************************************************
2400 * WDML_FreeTransaction
2401 *
2402 *
2403 */
2404 void WDML_FreeTransaction(WDML_INSTANCE* pInstance, WDML_XACT* pXAct, BOOL doFreePmt)
2405 {
2406 /* free pmt(s) in pXAct too. check against one for not deleting TRUE return values */
2407 if (doFreePmt && (ULONG_PTR)pXAct->hMem > 1)
2408 {
2409 GlobalFree(pXAct->hMem);
2410 }
2411 if (pXAct->hszItem) WDML_DecHSZ(pInstance, pXAct->hszItem);
2412
2413 HeapFree(GetProcessHeap(), 0, pXAct);
2414 }
2415
2416 /******************************************************************
2417 * WDML_FindTransaction
2418 *
2419 *
2420 */
2421 WDML_XACT* WDML_FindTransaction(WDML_CONV* pConv, DWORD tid)
2422 {
2423 WDML_XACT* pXAct;
2424
2425 tid = HIWORD(tid);
2426 for (pXAct = pConv->transactions; pXAct; pXAct = pXAct->next)
2427 {
2428 if (pXAct->xActID == tid)
2429 break;
2430 }
2431 return pXAct;
2432 }
2433
2434 /* ================================================================
2435 *
2436 * Information broadcast across DDEML implementations
2437 *
2438 * ================================================================ */
2439
2440 struct tagWDML_BroadcastPmt
2441 {
2442 LPCWSTR clsName;
2443 UINT uMsg;
2444 WPARAM wParam;
2445 LPARAM lParam;
2446 };
2447
2448 /******************************************************************
2449 * WDML_BroadcastEnumProc
2450 *
2451 *
2452 */
2453 static BOOL CALLBACK WDML_BroadcastEnumProc(HWND hWnd, LPARAM lParam)
2454 {
2455 struct tagWDML_BroadcastPmt* s = (struct tagWDML_BroadcastPmt*)lParam;
2456 WCHAR buffer[128];
2457
2458 if (GetClassNameW(hWnd, buffer, 128) > 0 &&
2459 lstrcmpiW(buffer, s->clsName) == 0)
2460 {
2461 PostMessageW(hWnd, s->uMsg, s->wParam, s->lParam);
2462 }
2463 return TRUE;
2464 }
2465
2466 /******************************************************************
2467 * WDML_BroadcastDDEWindows
2468 *
2469 *
2470 */
2471 void WDML_BroadcastDDEWindows(LPCWSTR clsName, UINT uMsg, WPARAM wParam, LPARAM lParam)
2472 {
2473 struct tagWDML_BroadcastPmt s;
2474
2475 s.clsName = clsName;
2476 s.uMsg = uMsg;
2477 s.wParam = wParam;
2478 s.lParam = lParam;
2479 EnumWindows(WDML_BroadcastEnumProc, (LPARAM)&s);
2480 }
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