1 /* -*- tab-width: 8; c-basic-offset: 4 -*- */
6 * Copyright 1997 Alexandre Julliard
7 * Copyright 1997 Len White
8 * Copyright 1999 Keith Matthews
10 * Copyright 2001 Eric Pouech
12 * This library is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU Lesser General Public
14 * License as published by the Free Software Foundation; either
15 * version 2.1 of the License, or (at your option) any later version.
17 * This library is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * Lesser General Public License for more details.
22 * You should have received a copy of the GNU Lesser General Public
23 * License along with this library; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 #include "wine/port.h"
41 #include "wine/debug.h"
42 #include "dde/dde_private.h"
44 WINE_DEFAULT_DEBUG_CHANNEL(ddeml);
46 /* convert between ATOM and HSZ avoiding compiler warnings */
47 #define ATOM2HSZ(atom) ((HSZ) (ULONG_PTR)(atom))
48 #define HSZ2ATOM(hsz) ((ATOM) (ULONG_PTR)(hsz))
50 static WDML_INSTANCE* WDML_InstanceList = NULL;
51 static DWORD WDML_MaxInstanceID = 0; /* OK for present, have to worry about wrap-around later */
52 const char WDML_szEventClass[] = "DdeEventClass";
54 static CRITICAL_SECTION_DEBUG critsect_debug =
57 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
58 0, 0, { 0, (DWORD)(__FILE__ ": WDML_CritSect") }
60 CRITICAL_SECTION WDML_CritSect = { &critsect_debug, -1, 0, 0, 0, 0 };
62 /* ================================================================
64 * Pure DDE (non DDEML) management
66 * ================================================================ */
69 /*****************************************************************
70 * PackDDElParam (USER32.@)
75 LPARAM WINAPI PackDDElParam(UINT msg, UINT_PTR uiLo, UINT_PTR uiHi)
86 if (!(hMem = GlobalAlloc(GMEM_DDESHARE, sizeof(UINT_PTR) * 2)))
88 ERR("GlobalAlloc failed\n");
91 if (!(params = GlobalLock(hMem)))
93 ERR("GlobalLock failed (%p)\n", hMem);
105 return MAKELPARAM(uiLo, uiHi);
110 /*****************************************************************
111 * UnpackDDElParam (USER32.@)
117 BOOL WINAPI UnpackDDElParam(UINT msg, LPARAM lParam,
118 PUINT_PTR uiLo, PUINT_PTR uiHi)
128 if (!lParam) return FALSE;
129 if (!(params = GlobalLock( (HGLOBAL)lParam )))
131 ERR("GlobalLock failed (%lx)\n", lParam);
134 TRACE("unpacked: low %08x, high %08x\n", params[0], params[1]);
135 if (uiLo) *uiLo = params[0];
136 if (uiHi) *uiHi = params[1];
137 GlobalUnlock( (HGLOBAL)lParam );
142 if (uiHi) *uiHi = lParam;
146 if (uiLo) *uiLo = LOWORD(lParam);
147 if (uiHi) *uiHi = HIWORD(lParam);
153 /*****************************************************************
154 * FreeDDElParam (USER32.@)
160 BOOL WINAPI FreeDDElParam(UINT msg, LPARAM lParam)
168 /* first check if it's a global handle */
169 if (!GlobalHandle( (LPVOID)lParam )) return TRUE;
170 return !GlobalFree( (HGLOBAL)lParam );
178 /*****************************************************************
179 * ReuseDDElParam (USER32.@)
184 LPARAM WINAPI ReuseDDElParam(LPARAM lParam, UINT msgIn, UINT msgOut,
185 UINT_PTR uiLo, UINT_PTR uiHi)
201 if (!lParam) return 0;
202 if (!(params = GlobalLock( (HGLOBAL)lParam )))
204 ERR("GlobalLock failed\n");
209 TRACE("Reusing pack %08x %08x\n", uiLo, uiHi);
210 GlobalLock( (HGLOBAL)lParam );
214 FreeDDElParam( msgIn, lParam );
218 FreeDDElParam( msgIn, lParam );
219 return MAKELPARAM(uiLo, uiHi);
223 return PackDDElParam( msgOut, uiLo, uiHi );
227 /*****************************************************************
228 * ImpersonateDdeClientWindow (USER32.@)
231 * hWndClient [I] handle to DDE client window
232 * hWndServer [I] handle to DDE server window
234 BOOL WINAPI ImpersonateDdeClientWindow(HWND hWndClient, HWND hWndServer)
236 FIXME("(%p %p): stub\n", hWndClient, hWndServer);
240 /*****************************************************************
241 * DdeSetQualityOfService (USER32.@)
244 BOOL WINAPI DdeSetQualityOfService(HWND hwndClient, CONST SECURITY_QUALITY_OF_SERVICE *pqosNew,
245 PSECURITY_QUALITY_OF_SERVICE pqosPrev)
247 FIXME("(%p %p %p): stub\n", hwndClient, pqosNew, pqosPrev);
251 /* ================================================================
253 * Instance management
255 * ================================================================ */
257 /******************************************************************************
258 * IncrementInstanceId
260 * generic routine to increment the max instance Id and allocate a new application instance
262 static void WDML_IncrementInstanceId(WDML_INSTANCE* pInstance)
264 DWORD id = InterlockedIncrement(&WDML_MaxInstanceID);
266 pInstance->instanceID = id;
267 TRACE("New instance id %ld allocated\n", id);
270 /******************************************************************
275 static LRESULT CALLBACK WDML_EventProc(HWND hwndEvent, UINT uMsg, WPARAM wParam, LPARAM lParam)
277 WDML_INSTANCE* pInstance;
282 case WM_WDML_REGISTER:
283 pInstance = WDML_GetInstanceFromWnd(hwndEvent);
284 /* try calling the Callback */
285 if (pInstance && !(pInstance->CBFflags & CBF_SKIP_REGISTRATIONS))
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);
295 case WM_WDML_UNREGISTER:
296 pInstance = WDML_GetInstanceFromWnd(hwndEvent);
297 if (pInstance && !(pInstance->CBFflags & CBF_SKIP_UNREGISTRATIONS))
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);
307 case WM_WDML_CONNECT_CONFIRM:
308 pInstance = WDML_GetInstanceFromWnd(hwndEvent);
309 if (pInstance && !(pInstance->CBFflags & CBF_SKIP_CONNECT_CONFIRMS))
312 /* confirm connection...
313 * lookup for this conv handle
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)
319 if (pConv->hwndClient == client && pConv->hwndServer == server)
324 pConv->wStatus |= ST_ISLOCAL;
326 WDML_InvokeCallback(pInstance, XTYP_CONNECT_CONFIRM, 0, (HCONV)pConv,
327 pConv->hszTopic, pConv->hszService, 0, 0,
328 (pConv->wStatus & ST_ISSELF) ? 1 : 0);
333 return DefWindowProcA(hwndEvent, uMsg, wParam, lParam);
338 /******************************************************************
343 UINT WDML_Initialize(LPDWORD pidInst, PFNCALLBACK pfnCallback,
344 DWORD afCmd, DWORD ulRes, BOOL bUnicode, BOOL b16)
346 WDML_INSTANCE* pInstance;
347 WDML_INSTANCE* reference_inst;
349 WNDCLASSEXA wndclass;
351 TRACE("(%p,%p,0x%lx,%ld)\n",
352 pidInst, pfnCallback, afCmd, ulRes);
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;
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 = (WDML_INSTANCE*)HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_INSTANCE));
364 if (pInstance == NULL)
366 /* catastrophe !! warn user & abort */
367 ERR("Instance create failed - out of memory\n");
368 return DMLERR_SYS_ERROR;
370 pInstance->next = NULL;
371 pInstance->monitor = (afCmd | APPCLASS_MONITOR);
373 /* messy bit, spec implies that 'Client Only' can be set in 2 different ways, catch 1 here */
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->servers = NULL;
384 pInstance->convs[0] = NULL;
385 pInstance->convs[1] = NULL;
386 pInstance->links[0] = NULL;
387 pInstance->links[1] = NULL;
389 /* isolate CBF flags in one go, expect this will go the way of all attempts to be clever !! */
391 pInstance->CBFflags = afCmd^((afCmd&MF_MASK)|((afCmd&APPCMD_MASK)|(afCmd&APPCLASS_MASK)));
393 if (!pInstance->clientOnly)
395 /* Check for other way of setting Client-only !! */
396 pInstance->clientOnly =
397 (pInstance->CBFflags & CBF_FAIL_ALLSVRXACTIONS) == CBF_FAIL_ALLSVRXACTIONS;
400 TRACE("instance created - checking validity \n");
404 /* Initialisation of new Instance Identifier */
405 TRACE("new instance, callback %p flags %lX\n",pfnCallback,afCmd);
407 EnterCriticalSection(&WDML_CritSect);
409 if (WDML_InstanceList == NULL)
411 /* can't be another instance in this case, assign to the base pointer */
412 WDML_InstanceList = pInstance;
414 /* since first must force filter of XTYP_CONNECT and XTYP_WILDCONNECT for
416 * ------------------------------- NOTE NOTE NOTE --------------------------
418 * the manual is not clear if this condition
419 * applies to the first call to DdeInitialize from an application, or the
420 * first call for a given callback !!!
423 pInstance->CBFflags = pInstance->CBFflags|APPCMD_FILTERINITS;
424 TRACE("First application instance detected OK\n");
425 /* allocate new instance ID */
426 WDML_IncrementInstanceId(pInstance);
430 /* really need to chain the new one in to the latest here, but after checking conditions
431 * such as trying to start a conversation from an application trying to monitor */
432 reference_inst = WDML_InstanceList;
433 TRACE("Subsequent application instance - starting checks\n");
434 while (reference_inst->next != NULL)
437 * This set of tests will work if application uses same instance Id
438 * at application level once allocated - which is what manual implies
439 * should happen. If someone tries to be
440 * clever (lazy ?) it will fail to pick up that later calls are for
441 * the same application - should we trust them ?
443 if (pInstance->instanceID == reference_inst->instanceID)
445 /* Check 1 - must be same Client-only state */
447 if (pInstance->clientOnly != reference_inst->clientOnly)
449 ret = DMLERR_DLL_USAGE;
453 /* Check 2 - cannot use 'Monitor' with any non-monitor modes */
455 if (pInstance->monitor != reference_inst->monitor)
457 ret = DMLERR_INVALIDPARAMETER;
461 /* Check 3 - must supply different callback address */
463 if (pInstance->callback == reference_inst->callback)
465 ret = DMLERR_DLL_USAGE;
469 reference_inst = reference_inst->next;
471 /* All cleared, add to chain */
473 TRACE("Application Instance checks finished\n");
474 WDML_IncrementInstanceId(pInstance);
475 reference_inst->next = pInstance;
477 LeaveCriticalSection(&WDML_CritSect);
479 *pidInst = pInstance->instanceID;
481 /* for deadlock issues, windows must always be created when outside the critical section */
482 wndclass.cbSize = sizeof(wndclass);
484 wndclass.lpfnWndProc = WDML_EventProc;
485 wndclass.cbClsExtra = 0;
486 wndclass.cbWndExtra = sizeof(DWORD);
487 wndclass.hInstance = 0;
489 wndclass.hCursor = 0;
490 wndclass.hbrBackground = 0;
491 wndclass.lpszMenuName = NULL;
492 wndclass.lpszClassName = WDML_szEventClass;
493 wndclass.hIconSm = 0;
495 RegisterClassExA(&wndclass);
497 pInstance->hwndEvent = CreateWindowA(WDML_szEventClass, NULL,
498 WS_POPUP, 0, 0, 0, 0,
501 SetWindowLongA(pInstance->hwndEvent, GWL_WDML_INSTANCE, (DWORD)pInstance);
503 TRACE("New application instance processing finished OK\n");
507 /* Reinitialisation situation --- FIX */
508 TRACE("reinitialisation of (%p,%p,0x%lx,%ld): stub\n", pidInst, pfnCallback, afCmd, ulRes);
510 EnterCriticalSection(&WDML_CritSect);
512 if (WDML_InstanceList == NULL)
514 ret = DMLERR_INVALIDPARAMETER;
517 HeapFree(GetProcessHeap(), 0, pInstance); /* finished - release heap space used as work store */
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 ? */
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
525 while (reference_inst->next != NULL)
527 if (*pidInst == reference_inst->instanceID && pfnCallback == reference_inst->callback)
529 /* Check 1 - cannot change client-only mode if set via APPCMD_CLIENTONLY */
531 if (reference_inst->clientOnly)
533 if ((reference_inst->CBFflags & CBF_FAIL_ALLSVRXACTIONS) != CBF_FAIL_ALLSVRXACTIONS)
535 /* i.e. Was set to Client-only and through APPCMD_CLIENTONLY */
537 if (!(afCmd & APPCMD_CLIENTONLY))
539 ret = DMLERR_INVALIDPARAMETER;
544 /* Check 2 - cannot change monitor modes */
546 if (pInstance->monitor != reference_inst->monitor)
548 ret = DMLERR_INVALIDPARAMETER;
552 /* Check 3 - trying to set Client-only via APPCMD when not set so previously */
554 if ((afCmd&APPCMD_CLIENTONLY) && !reference_inst->clientOnly)
556 ret = DMLERR_INVALIDPARAMETER;
561 reference_inst = reference_inst->next;
563 if (reference_inst->next == NULL)
565 ret = DMLERR_INVALIDPARAMETER;
568 /* All checked - change relevant flags */
570 reference_inst->CBFflags = pInstance->CBFflags;
571 reference_inst->clientOnly = pInstance->clientOnly;
572 reference_inst->monitorFlags = pInstance->monitorFlags;
573 LeaveCriticalSection(&WDML_CritSect);
576 return DMLERR_NO_ERROR;
578 HeapFree(GetProcessHeap(), 0, pInstance);
579 LeaveCriticalSection(&WDML_CritSect);
583 /******************************************************************************
584 * DdeInitializeA (USER32.@)
586 UINT WINAPI DdeInitializeA(LPDWORD pidInst, PFNCALLBACK pfnCallback,
587 DWORD afCmd, DWORD ulRes)
589 return WDML_Initialize(pidInst, pfnCallback, afCmd, ulRes, FALSE, FALSE);
592 /******************************************************************************
593 * DdeInitializeW [USER32.@]
594 * Registers an application with the DDEML
597 * pidInst [I] Pointer to instance identifier
598 * pfnCallback [I] Pointer to callback function
599 * afCmd [I] Set of command and filter flags
603 * Success: DMLERR_NO_ERROR
604 * Failure: DMLERR_DLL_USAGE, DMLERR_INVALIDPARAMETER, DMLERR_SYS_ERROR
606 UINT WINAPI DdeInitializeW(LPDWORD pidInst, PFNCALLBACK pfnCallback,
607 DWORD afCmd, DWORD ulRes)
609 return WDML_Initialize(pidInst, pfnCallback, afCmd, ulRes, TRUE, FALSE);
612 /*****************************************************************
613 * DdeUninitialize [USER32.@] Frees DDEML resources
616 * idInst [I] Instance identifier
623 BOOL WINAPI DdeUninitialize(DWORD idInst)
625 /* Stage one - check if we have a handle for this instance
627 WDML_INSTANCE* pInstance;
629 WDML_CONV* pConvNext;
631 TRACE("(%ld)\n", idInst);
633 EnterCriticalSection(&WDML_CritSect);
635 /* First check instance
637 pInstance = WDML_GetInstance(idInst);
638 if (pInstance == NULL)
640 LeaveCriticalSection(&WDML_CritSect);
642 * Needs something here to record NOT_INITIALIZED ready for DdeGetLastError
647 /* first terminate all conversations client side
648 * this shall close existing links...
650 for (pConv = pInstance->convs[WDML_CLIENT_SIDE]; pConv != NULL; pConv = pConvNext)
652 pConvNext = pConv->next;
653 DdeDisconnect((HCONV)pConv);
655 if (pInstance->convs[WDML_CLIENT_SIDE])
656 FIXME("still pending conversations\n");
658 /* then unregister all known service names */
659 DdeNameService(idInst, 0, 0, DNS_UNREGISTER);
661 /* Free the nodes that were not freed by this instance
662 * and remove the nodes from the list of HSZ nodes.
664 WDML_FreeAllHSZ(pInstance);
666 DestroyWindow(pInstance->hwndEvent);
668 /* OK now delete the instance handle itself */
670 if (WDML_InstanceList == pInstance)
672 /* special case - the first/only entry */
673 WDML_InstanceList = pInstance->next;
677 /* general case, remove entry */
680 for (inst = WDML_InstanceList; inst->next != pInstance; inst = inst->next);
681 inst->next = pInstance->next;
683 /* leave crit sect and release the heap entry
685 HeapFree(GetProcessHeap(), 0, pInstance);
686 LeaveCriticalSection(&WDML_CritSect);
690 /******************************************************************
691 * WDML_NotifyThreadExit
695 void WDML_NotifyThreadDetach(void)
697 WDML_INSTANCE* pInstance;
699 DWORD tid = GetCurrentThreadId();
701 EnterCriticalSection(&WDML_CritSect);
702 for (pInstance = WDML_InstanceList; pInstance != NULL; pInstance = next)
704 next = pInstance->next;
705 if (pInstance->threadID == tid)
707 DdeUninitialize(pInstance->instanceID);
710 LeaveCriticalSection(&WDML_CritSect);
713 /******************************************************************
714 * WDML_InvokeCallback
718 HDDEDATA WDML_InvokeCallback(WDML_INSTANCE* pInstance, UINT uType, UINT uFmt, HCONV hConv,
719 HSZ hsz1, HSZ hsz2, HDDEDATA hdata,
720 ULONG_PTR dwData1, ULONG_PTR dwData2)
724 if (pInstance == NULL)
726 TRACE("invoking CB%d[%p] (%x %x %p %p %p %p %lx %lx)\n",
727 pInstance->win16 ? 16 : 32, pInstance->callback, uType, uFmt,
728 hConv, hsz1, hsz2, hdata, dwData1, dwData2);
729 if (pInstance->win16)
731 ret = WDML_InvokeCallback16(pInstance->callback, uType, uFmt, hConv,
732 hsz1, hsz2, hdata, dwData1, dwData2);
736 ret = pInstance->callback(uType, uFmt, hConv, hsz1, hsz2, hdata, dwData1, dwData2);
738 TRACE("done => %p\n", ret);
742 /*****************************************************************************
745 * generic routine to return a pointer to the relevant DDE_HANDLE_ENTRY
746 * for an instance Id, or NULL if the entry does not exist
749 WDML_INSTANCE* WDML_GetInstance(DWORD instId)
751 WDML_INSTANCE* pInstance;
753 for (pInstance = WDML_InstanceList; pInstance != NULL; pInstance = pInstance->next)
755 if (pInstance->instanceID == instId)
757 if (GetCurrentThreadId() != pInstance->threadID)
759 FIXME("Tried to get instance from wrong thread\n");
765 TRACE("Instance entry missing\n");
769 /******************************************************************
770 * WDML_GetInstanceFromWnd
774 WDML_INSTANCE* WDML_GetInstanceFromWnd(HWND hWnd)
776 return (WDML_INSTANCE*)GetWindowLongA(hWnd, GWL_WDML_INSTANCE);
779 /******************************************************************************
780 * DdeGetLastError [USER32.@] Gets most recent error code
783 * idInst [I] Instance identifier
788 UINT WINAPI DdeGetLastError(DWORD idInst)
791 WDML_INSTANCE* pInstance;
793 EnterCriticalSection(&WDML_CritSect);
795 /* First check instance
797 pInstance = WDML_GetInstance(idInst);
798 if (pInstance == NULL)
800 error_code = DMLERR_INVALIDPARAMETER;
804 error_code = pInstance->lastError;
805 pInstance->lastError = 0;
808 LeaveCriticalSection(&WDML_CritSect);
812 /* ================================================================
816 * ================================================================ */
819 /******************************************************************
824 static HSZNode* WDML_FindNode(WDML_INSTANCE* pInstance, HSZ hsz)
828 if (pInstance == NULL) return NULL;
830 for (pNode = pInstance->nodeList; pNode != NULL; pNode = pNode->next)
832 if (pNode->hsz == hsz) break;
834 if (!pNode) WARN("HSZ %p not found\n", hsz);
838 /******************************************************************
839 * WDML_MakeAtomFromHsz
841 * Creates a global atom from an existing HSZ
842 * Generally used before sending an HSZ as an atom to a remote app
844 ATOM WDML_MakeAtomFromHsz(HSZ hsz)
846 WCHAR nameBuffer[MAX_BUFFER_LEN];
848 if (GetAtomNameW(HSZ2ATOM(hsz), nameBuffer, MAX_BUFFER_LEN))
849 return GlobalAddAtomW(nameBuffer);
850 WARN("HSZ %p not found\n", hsz);
854 /******************************************************************
855 * WDML_MakeHszFromAtom
857 * Creates a HSZ from an existing global atom
858 * Generally used while receiving a global atom and transforming it
861 HSZ WDML_MakeHszFromAtom(WDML_INSTANCE* pInstance, ATOM atom)
863 WCHAR nameBuffer[MAX_BUFFER_LEN];
865 if (!atom) return NULL;
867 if (GlobalGetAtomNameW(atom, nameBuffer, MAX_BUFFER_LEN))
869 TRACE("%x => %s\n", atom, debugstr_w(nameBuffer));
870 return DdeCreateStringHandleW(pInstance->instanceID, nameBuffer, CP_WINUNICODE);
872 WARN("ATOM 0x%x not found\n", atom);
876 /******************************************************************
881 BOOL WDML_IncHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
885 pNode = WDML_FindNode(pInstance, hsz);
886 if (!pNode) return FALSE;
892 /******************************************************************************
893 * WDML_DecHSZ (INTERNAL)
895 * Decrease the ref count of an HSZ. If it reaches 0, the node is removed from the list
897 * Returns -1 is the HSZ isn't found, otherwise it's the current (after --) of the ref count
899 BOOL WDML_DecHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
901 HSZNode* pPrev = NULL;
904 for (pCurrent = pInstance->nodeList; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
906 /* If we found the node we were looking for and its ref count is one,
909 if (pCurrent->hsz == hsz)
911 if (--pCurrent->refCount == 0)
913 if (pCurrent == pInstance->nodeList)
915 pInstance->nodeList = pCurrent->next;
919 pPrev->next = pCurrent->next;
921 HeapFree(GetProcessHeap(), 0, pCurrent);
922 DeleteAtom(HSZ2ATOM(hsz));
927 WARN("HSZ %p not found\n", hsz);
932 /******************************************************************************
933 * WDML_FreeAllHSZ (INTERNAL)
935 * Frees up all the strings still allocated in the list and
936 * remove all the nodes from the list of HSZ nodes.
938 void WDML_FreeAllHSZ(WDML_INSTANCE* pInstance)
940 /* Free any strings created in this instance.
942 while (pInstance->nodeList != NULL)
944 DdeFreeStringHandle(pInstance->instanceID, pInstance->nodeList->hsz);
948 /******************************************************************************
949 * InsertHSZNode (INTERNAL)
951 * Insert a node to the head of the list.
953 static void WDML_InsertHSZNode(WDML_INSTANCE* pInstance, HSZ hsz)
957 HSZNode* pNew = NULL;
958 /* Create a new node for this HSZ.
960 pNew = (HSZNode*)HeapAlloc(GetProcessHeap(), 0, sizeof(HSZNode));
964 pNew->next = pInstance->nodeList;
966 pInstance->nodeList = pNew;
970 ERR("Primary HSZ Node allocation failed - out of memory\n");
975 /******************************************************************
980 static int WDML_QueryString(WDML_INSTANCE* pInstance, HSZ hsz, LPVOID ptr, DWORD cchMax,
983 WCHAR pString[MAX_BUFFER_LEN];
985 /* If psz is null, we have to return only the length
991 cchMax = MAX_BUFFER_LEN;
997 ret = GetAtomNameA(HSZ2ATOM(hsz), ptr, cchMax);
1000 ret = GetAtomNameW(HSZ2ATOM(hsz), ptr, cchMax);
1003 ERR("Unknown code page %d\n", codepage);
1009 /*****************************************************************
1010 * DdeQueryStringA [USER32.@]
1012 DWORD WINAPI DdeQueryStringA(DWORD idInst, HSZ hsz, LPSTR psz, DWORD cchMax, INT iCodePage)
1015 WDML_INSTANCE* pInstance;
1017 TRACE("(%ld, %p, %p, %ld, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1019 EnterCriticalSection(&WDML_CritSect);
1021 /* First check instance
1023 pInstance = WDML_GetInstance(idInst);
1024 if (pInstance != NULL)
1026 if (iCodePage == 0) iCodePage = CP_WINANSI;
1027 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1029 LeaveCriticalSection(&WDML_CritSect);
1031 TRACE("returning %ld (%s)\n", ret, debugstr_a(psz));
1035 /*****************************************************************
1036 * DdeQueryStringW [USER32.@]
1039 DWORD WINAPI DdeQueryStringW(DWORD idInst, HSZ hsz, LPWSTR psz, DWORD cchMax, INT iCodePage)
1042 WDML_INSTANCE* pInstance;
1044 TRACE("(%ld, %p, %p, %ld, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1046 EnterCriticalSection(&WDML_CritSect);
1048 /* First check instance
1050 pInstance = WDML_GetInstance(idInst);
1051 if (pInstance != NULL)
1053 if (iCodePage == 0) iCodePage = CP_WINUNICODE;
1054 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1056 LeaveCriticalSection(&WDML_CritSect);
1058 TRACE("returning %ld (%s)\n", ret, debugstr_w(psz));
1062 /******************************************************************
1067 static HSZ WDML_CreateString(WDML_INSTANCE* pInstance, LPCVOID ptr, int codepage)
1074 hsz = ATOM2HSZ(AddAtomA(ptr));
1075 TRACE("added atom %s with HSZ %p, \n", debugstr_a(ptr), hsz);
1078 hsz = ATOM2HSZ(AddAtomW(ptr));
1079 TRACE("added atom %s with HSZ %p, \n", debugstr_w(ptr), hsz);
1082 ERR("Unknown code page %d\n", codepage);
1085 WDML_InsertHSZNode(pInstance, hsz);
1089 /*****************************************************************
1090 * DdeCreateStringHandleA [USER32.@]
1093 * Success: String handle
1096 HSZ WINAPI DdeCreateStringHandleA(DWORD idInst, LPCSTR psz, INT codepage)
1099 WDML_INSTANCE* pInstance;
1101 TRACE("(%ld,%s,%d)\n", idInst, debugstr_a(psz), codepage);
1103 EnterCriticalSection(&WDML_CritSect);
1105 pInstance = WDML_GetInstance(idInst);
1108 if (codepage == 0) codepage = CP_WINANSI;
1109 hsz = WDML_CreateString(pInstance, psz, codepage);
1112 LeaveCriticalSection(&WDML_CritSect);
1117 /******************************************************************************
1118 * DdeCreateStringHandleW [USER32.@] Creates handle to identify string
1121 * idInst [I] Instance identifier
1122 * psz [I] Pointer to string
1123 * codepage [I] Code page identifier
1125 * Success: String handle
1128 HSZ WINAPI DdeCreateStringHandleW(DWORD idInst, LPCWSTR psz, INT codepage)
1130 WDML_INSTANCE* pInstance;
1133 TRACE("(%ld,%s,%d)\n", idInst, debugstr_w(psz), codepage);
1135 EnterCriticalSection(&WDML_CritSect);
1137 pInstance = WDML_GetInstance(idInst);
1140 if (codepage == 0) codepage = CP_WINUNICODE;
1141 hsz = WDML_CreateString(pInstance, psz, codepage);
1143 LeaveCriticalSection(&WDML_CritSect);
1148 /*****************************************************************
1149 * DdeFreeStringHandle (USER32.@)
1150 * RETURNS: success: nonzero
1153 BOOL WINAPI DdeFreeStringHandle(DWORD idInst, HSZ hsz)
1155 WDML_INSTANCE* pInstance;
1158 TRACE("(%ld,%p): \n", idInst, hsz);
1160 EnterCriticalSection(&WDML_CritSect);
1162 /* First check instance
1164 pInstance = WDML_GetInstance(idInst);
1166 ret = WDML_DecHSZ(pInstance, hsz);
1168 LeaveCriticalSection(&WDML_CritSect);
1173 /*****************************************************************
1174 * DdeKeepStringHandle (USER32.@)
1176 * RETURNS: success: nonzero
1179 BOOL WINAPI DdeKeepStringHandle(DWORD idInst, HSZ hsz)
1181 WDML_INSTANCE* pInstance;
1184 TRACE("(%ld,%p): \n", idInst, hsz);
1186 EnterCriticalSection(&WDML_CritSect);
1188 /* First check instance
1190 pInstance = WDML_GetInstance(idInst);
1192 ret = WDML_IncHSZ(pInstance, hsz);
1194 LeaveCriticalSection(&WDML_CritSect);
1198 /*****************************************************************
1199 * DdeCmpStringHandles (USER32.@)
1201 * Compares the value of two string handles. This comparison is
1202 * not case sensitive.
1205 * -1 The value of hsz1 is zero or less than hsz2
1206 * 0 The values of hsz 1 and 2 are the same or both zero.
1207 * 1 The value of hsz2 is zero of less than hsz1
1209 INT WINAPI DdeCmpStringHandles(HSZ hsz1, HSZ hsz2)
1211 WCHAR psz1[MAX_BUFFER_LEN];
1212 WCHAR psz2[MAX_BUFFER_LEN];
1216 ret1 = GetAtomNameW(HSZ2ATOM(hsz1), psz1, MAX_BUFFER_LEN);
1217 ret2 = GetAtomNameW(HSZ2ATOM(hsz2), psz2, MAX_BUFFER_LEN);
1219 TRACE("(%p<%s> %p<%s>);\n", hsz1, debugstr_w(psz1), hsz2, debugstr_w(psz2));
1221 /* Make sure we found both strings. */
1222 if (ret1 == 0 && ret2 == 0)
1224 /* If both are not found, return both "zero strings". */
1229 /* If hsz1 is a not found, return hsz1 is "zero string". */
1234 /* If hsz2 is a not found, return hsz2 is "zero string". */
1239 /* Compare the two strings we got (case insensitive). */
1240 ret = lstrcmpiW(psz1, psz2);
1241 /* Since strcmp returns any number smaller than
1242 * 0 when the first string is found to be less than
1243 * the second one we must make sure we are returning
1244 * the proper values.
1259 /* ================================================================
1261 * Data handle management
1263 * ================================================================ */
1265 /*****************************************************************
1266 * DdeCreateDataHandle (USER32.@)
1268 HDDEDATA WINAPI DdeCreateDataHandle(DWORD idInst, LPBYTE pSrc, DWORD cb, DWORD cbOff,
1269 HSZ hszItem, UINT wFmt, UINT afCmd)
1271 /* For now, we ignore idInst, hszItem.
1272 * The purpose of these arguments still need to be investigated.
1277 DDE_DATAHANDLE_HEAD* pDdh;
1278 WCHAR psz[MAX_BUFFER_LEN];
1280 GetAtomNameW(HSZ2ATOM(hszItem), psz, MAX_BUFFER_LEN);
1282 TRACE("(%ld,%p,cb %ld, cbOff %ld,%p <%s>,%x,%x)\n",
1283 idInst, pSrc, cb, cbOff, hszItem, debugstr_w(psz), wFmt, afCmd);
1285 if (afCmd != 0 && afCmd != HDATA_APPOWNED)
1288 /* we use the first 4 bytes to store the size */
1289 if (!(hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, cb + cbOff + sizeof(DDE_DATAHANDLE_HEAD))))
1291 ERR("GlobalAlloc failed\n");
1295 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock(hMem);
1302 pDdh->cfFormat = wFmt;
1303 pDdh->bAppOwned = (afCmd == HDATA_APPOWNED);
1305 pByte = (LPBYTE)(pDdh + 1);
1308 memcpy(pByte, pSrc + cbOff, cb);
1312 return (HDDEDATA)hMem;
1315 /*****************************************************************
1317 * DdeAddData (USER32.@)
1319 HDDEDATA WINAPI DdeAddData(HDDEDATA hData, LPBYTE pSrc, DWORD cb, DWORD cbOff)
1321 DWORD old_sz, new_sz;
1324 TRACE("(%p,%p,cb %ld, cbOff %ld)\n", hData, pSrc, cb, cbOff);
1326 pDst = DdeAccessData(hData, &old_sz);
1327 if (!pDst) return 0;
1329 new_sz = cb + cbOff;
1330 if (new_sz > old_sz)
1332 DdeUnaccessData(hData);
1333 hData = GlobalReAlloc((HGLOBAL)hData, new_sz + sizeof(DDE_DATAHANDLE_HEAD),
1334 GMEM_MOVEABLE | GMEM_DDESHARE);
1335 pDst = DdeAccessData(hData, &old_sz);
1338 if (!pDst) return 0;
1340 memcpy(pDst + cbOff, pSrc, cb);
1341 DdeUnaccessData(hData);
1345 /******************************************************************************
1346 * DdeGetData [USER32.@] Copies data from DDE object to local buffer
1350 * hData [I] Handle to DDE object
1351 * pDst [I] Pointer to destination buffer
1352 * cbMax [I] Amount of data to copy
1353 * cbOff [I] Offset to beginning of data
1356 * Size of memory object associated with handle
1358 DWORD WINAPI DdeGetData(HDDEDATA hData, LPBYTE pDst, DWORD cbMax, DWORD cbOff)
1360 DWORD dwSize, dwRet;
1363 TRACE("(%p,%p,%ld,%ld)\n", hData, pDst, cbMax, cbOff);
1365 pByte = DdeAccessData(hData, &dwSize);
1373 else if (cbOff + cbMax < dwSize)
1377 else if (cbOff < dwSize)
1379 dwRet = dwSize - cbOff;
1385 if (pDst && dwRet != 0)
1387 memcpy(pDst, pByte + cbOff, dwRet);
1389 DdeUnaccessData(hData);
1398 /*****************************************************************
1399 * DdeAccessData (USER32.@)
1401 LPBYTE WINAPI DdeAccessData(HDDEDATA hData, LPDWORD pcbDataSize)
1403 HGLOBAL hMem = (HGLOBAL)hData;
1404 DDE_DATAHANDLE_HEAD* pDdh;
1406 TRACE("(%p,%p)\n", hData, pcbDataSize);
1408 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock(hMem);
1411 ERR("Failed on GlobalLock(%p)\n", hMem);
1415 if (pcbDataSize != NULL)
1417 *pcbDataSize = GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD);
1419 TRACE("=> %p (%lu)\n", pDdh + 1, GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD));
1420 return (LPBYTE)(pDdh + 1);
1423 /*****************************************************************
1424 * DdeUnaccessData (USER32.@)
1426 BOOL WINAPI DdeUnaccessData(HDDEDATA hData)
1428 HGLOBAL hMem = (HGLOBAL)hData;
1430 TRACE("(%p)\n", hData);
1437 /*****************************************************************
1438 * DdeFreeDataHandle (USER32.@)
1440 BOOL WINAPI DdeFreeDataHandle(HDDEDATA hData)
1442 TRACE("(%p)\n", hData);
1443 return GlobalFree((HGLOBAL)hData) == 0;
1446 /******************************************************************
1451 BOOL WDML_IsAppOwned(HDDEDATA hData)
1453 DDE_DATAHANDLE_HEAD* pDdh;
1456 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock((HGLOBAL)hData);
1459 ret = pDdh->bAppOwned;
1460 GlobalUnlock((HGLOBAL)hData);
1465 /* ================================================================
1467 * Global <=> Data handle management
1469 * ================================================================ */
1471 /* Note: we use a DDEDATA, but layout of DDEDATA, DDEADVISE and DDEPOKE structures is similar:
1473 * (bytes) (bits) comment
1474 * 0 16 bit fields for options (release, ackreq, response...)
1475 * 2 16 clipboard format
1476 * 4 ? data to be used
1478 HDDEDATA WDML_Global2DataHandle(HGLOBAL hMem, WINE_DDEHEAD* p)
1486 pDd = GlobalLock(hMem);
1487 size = GlobalSize(hMem) - sizeof(WINE_DDEHEAD);
1490 if (p) memcpy(p, pDd, sizeof(WINE_DDEHEAD));
1491 switch (pDd->cfFormat)
1494 FIXME("Unsupported format (%d) for data... assuming raw information\n",
1499 ret = DdeCreateDataHandle(0, pDd->Value, size, 0, 0, pDd->cfFormat, 0);
1502 if (size >= sizeof(BITMAP))
1504 BITMAP* bmp = (BITMAP*)pDd->Value;
1505 int count = bmp->bmWidthBytes * bmp->bmHeight * bmp->bmPlanes;
1506 if (size >= sizeof(BITMAP) + count)
1510 if ((hbmp = CreateBitmap(bmp->bmWidth, bmp->bmHeight,
1511 bmp->bmPlanes, bmp->bmBitsPixel,
1512 pDd->Value + sizeof(BITMAP))))
1514 ret = DdeCreateDataHandle(0, (LPBYTE)&hbmp, sizeof(hbmp),
1515 0, 0, CF_BITMAP, 0);
1517 else ERR("Can't create bmp\n");
1521 ERR("Wrong count: %lu / %d\n", size, sizeof(BITMAP) + count);
1523 } else ERR("No bitmap header\n");
1532 /******************************************************************
1533 * WDML_DataHandle2Global
1537 HGLOBAL WDML_DataHandle2Global(HDDEDATA hDdeData, BOOL fResponse, BOOL fRelease,
1538 BOOL fDeferUpd, BOOL fAckReq)
1540 DDE_DATAHANDLE_HEAD* pDdh;
1544 dwSize = GlobalSize((HGLOBAL)hDdeData) - sizeof(DDE_DATAHANDLE_HEAD);
1545 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock((HGLOBAL)hDdeData);
1548 WINE_DDEHEAD* wdh = NULL;
1550 switch (pDdh->cfFormat)
1553 FIXME("Unsupported format (%d) for data... passing raw information\n", pDdh->cfFormat);
1557 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, sizeof(WINE_DDEHEAD) + dwSize);
1558 if (hMem && (wdh = GlobalLock(hMem)))
1560 memcpy(wdh + 1, pDdh + 1, dwSize);
1564 if (dwSize >= sizeof(HBITMAP))
1568 HBITMAP hbmp = *(HBITMAP*)(pDdh + 1);
1570 if (GetObjectA(hbmp, sizeof(bmp), &bmp))
1572 count = bmp.bmWidthBytes * bmp.bmHeight;
1573 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE,
1574 sizeof(WINE_DDEHEAD) + sizeof(bmp) + count);
1575 if (hMem && (wdh = GlobalLock(hMem)))
1577 memcpy(wdh + 1, &bmp, sizeof(bmp));
1578 GetBitmapBits(hbmp, count, ((char*)(wdh + 1)) + sizeof(bmp));
1587 wdh->fResponse = fResponse;
1588 wdh->fRelease = fRelease;
1589 wdh->fDeferUpd = fDeferUpd;
1590 wdh->fAckReq = fAckReq;
1591 wdh->cfFormat = pDdh->cfFormat;
1594 GlobalUnlock((HGLOBAL)hDdeData);
1600 /* ================================================================
1604 * ================================================================ */
1606 /******************************************************************
1611 WDML_SERVER* WDML_AddServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1613 WDML_SERVER* pServer;
1617 pServer = (WDML_SERVER*)HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_SERVER));
1618 if (pServer == NULL) return NULL;
1620 WDML_IncHSZ(pInstance, pServer->hszService = hszService);
1622 DdeQueryStringA(pInstance->instanceID, hszService, buf1, sizeof(buf1), CP_WINANSI);
1623 snprintf(buf2, sizeof(buf2), "%s(0x%08lx)", buf1, GetCurrentProcessId());
1624 pServer->hszServiceSpec = DdeCreateStringHandleA(pInstance->instanceID, buf2, CP_WINANSI);
1626 pServer->atomService = WDML_MakeAtomFromHsz(pServer->hszService);
1627 pServer->atomServiceSpec = WDML_MakeAtomFromHsz(pServer->hszServiceSpec);
1629 pServer->filterOn = TRUE;
1631 pServer->next = pInstance->servers;
1632 pInstance->servers = pServer;
1636 /******************************************************************
1641 void WDML_RemoveServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1643 WDML_SERVER* pPrev = NULL;
1644 WDML_SERVER* pServer = NULL;
1646 WDML_CONV* pConvNext;
1648 pServer = pInstance->servers;
1650 while (pServer != NULL)
1652 if (DdeCmpStringHandles(pServer->hszService, hszService) == 0)
1654 WDML_BroadcastDDEWindows(WDML_szEventClass, WM_WDML_UNREGISTER,
1655 pServer->atomService, pServer->atomServiceSpec);
1656 /* terminate all conversations for given topic */
1657 for (pConv = pInstance->convs[WDML_SERVER_SIDE]; pConv != NULL; pConv = pConvNext)
1659 pConvNext = pConv->next;
1660 if (DdeCmpStringHandles(pConv->hszService, hszService) == 0)
1662 WDML_RemoveConv(pConv, WDML_SERVER_SIDE);
1663 /* don't care about return code (whether client window is present or not) */
1664 PostMessageA(pConv->hwndClient, WM_DDE_TERMINATE, (WPARAM)pConv->hwndServer, 0L);
1667 if (pServer == pInstance->servers)
1669 pInstance->servers = pServer->next;
1673 pPrev->next = pServer->next;
1676 DestroyWindow(pServer->hwndServer);
1677 WDML_DecHSZ(pInstance, pServer->hszServiceSpec);
1678 WDML_DecHSZ(pInstance, pServer->hszService);
1680 GlobalDeleteAtom(pServer->atomService);
1681 GlobalDeleteAtom(pServer->atomServiceSpec);
1683 HeapFree(GetProcessHeap(), 0, pServer);
1688 pServer = pServer->next;
1692 /*****************************************************************************
1695 * generic routine to return a pointer to the relevant ServiceNode
1696 * for a given service name, or NULL if the entry does not exist
1699 WDML_SERVER* WDML_FindServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1701 WDML_SERVER* pServer;
1703 for (pServer = pInstance->servers; pServer != NULL; pServer = pServer->next)
1705 if (hszService == pServer->hszService)
1710 TRACE("Service name missing\n");
1714 /* ================================================================
1716 * Conversation management
1718 * ================================================================ */
1720 /******************************************************************
1725 WDML_CONV* WDML_AddConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1726 HSZ hszService, HSZ hszTopic, HWND hwndClient, HWND hwndServer)
1730 /* no converstation yet, add it */
1731 pConv = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_CONV));
1732 if (!pConv) return NULL;
1734 pConv->instance = pInstance;
1735 WDML_IncHSZ(pInstance, pConv->hszService = hszService);
1736 WDML_IncHSZ(pInstance, pConv->hszTopic = hszTopic);
1737 pConv->hwndServer = hwndServer;
1738 pConv->hwndClient = hwndClient;
1739 pConv->transactions = NULL;
1741 pConv->wStatus = (side == WDML_CLIENT_SIDE) ? ST_CLIENT : 0L;
1742 /* check if both side of the conversation are of the same instance */
1743 if (GetWindowThreadProcessId(hwndClient, NULL) == GetWindowThreadProcessId(hwndServer, NULL) &&
1744 WDML_GetInstanceFromWnd(hwndClient) == WDML_GetInstanceFromWnd(hwndServer))
1746 pConv->wStatus |= ST_ISSELF;
1748 pConv->wConvst = XST_NULL;
1750 pConv->next = pInstance->convs[side];
1751 pInstance->convs[side] = pConv;
1756 /******************************************************************
1761 WDML_CONV* WDML_FindConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1762 HSZ hszService, HSZ hszTopic)
1764 WDML_CONV* pCurrent = NULL;
1766 for (pCurrent = pInstance->convs[side]; pCurrent != NULL; pCurrent = pCurrent->next)
1768 if (DdeCmpStringHandles(pCurrent->hszService, hszService) == 0 &&
1769 DdeCmpStringHandles(pCurrent->hszTopic, hszTopic) == 0)
1778 /******************************************************************
1783 void WDML_RemoveConv(WDML_CONV* pRef, WDML_SIDE side)
1785 WDML_CONV* pPrev = NULL;
1786 WDML_CONV* pCurrent;
1788 WDML_XACT* pXActNext;
1794 /* remove any pending transaction */
1795 for (pXAct = pRef->transactions; pXAct != NULL; pXAct = pXActNext)
1797 pXActNext = pXAct->next;
1798 WDML_FreeTransaction(pRef->instance, pXAct, TRUE);
1801 WDML_RemoveAllLinks(pRef->instance, pRef, side);
1803 /* FIXME: should we keep the window around ? it seems so (at least on client side
1804 * to let QueryConvInfo work after conv termination, but also to implement
1807 /* destroy conversation window, but first remove pConv from hWnd.
1808 * this would help the wndProc do appropriate handling upon a WM_DESTROY message
1810 hWnd = (side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer;
1811 SetWindowLongA(hWnd, GWL_WDML_CONVERSATION, 0);
1813 DestroyWindow((side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer);
1815 WDML_DecHSZ(pRef->instance, pRef->hszService);
1816 WDML_DecHSZ(pRef->instance, pRef->hszTopic);
1818 for (pCurrent = pRef->instance->convs[side]; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
1820 if (pCurrent == pRef)
1822 if (pCurrent == pRef->instance->convs[side])
1824 pRef->instance->convs[side] = pCurrent->next;
1828 pPrev->next = pCurrent->next;
1831 HeapFree(GetProcessHeap(), 0, pCurrent);
1837 /******************************************************************
1838 * WDML_EnableCallback
1840 static BOOL WDML_EnableCallback(WDML_CONV *pConv, UINT wCmd)
1842 if (wCmd == EC_DISABLE)
1844 FIXME("EC_DISABLE is not implemented\n");
1848 if (wCmd == EC_QUERYWAITING)
1849 return pConv->transactions ? TRUE : FALSE;
1851 if (wCmd != EC_ENABLEALL && wCmd != EC_ENABLEONE)
1853 FIXME("Unknown command code %04x\n", wCmd);
1857 while (pConv->transactions)
1859 WDML_XACT *pXAct = pConv->transactions;
1860 WDML_UnQueueTransaction(pConv, pXAct);
1862 if (pConv->wStatus & ST_CLIENT)
1864 /*WDML_ClientHandle(pConv, pXAct);*/
1865 FIXME("Client delayed transaction queue handling is not supported\n");
1868 WDML_ServerHandle(pConv, pXAct);
1870 WDML_FreeTransaction(pConv->instance, pXAct, TRUE);
1872 if (wCmd == EC_ENABLEONE) break;
1877 /*****************************************************************
1878 * DdeEnableCallback (USER32.@)
1880 BOOL WINAPI DdeEnableCallback(DWORD idInst, HCONV hConv, UINT wCmd)
1885 TRACE("(%ld, %p, %04x)\n", idInst, hConv, wCmd);
1887 EnterCriticalSection(&WDML_CritSect);
1889 pConv = WDML_GetConv(hConv, TRUE);
1891 if (pConv && pConv->instance->instanceID == idInst)
1892 ret = WDML_EnableCallback(pConv, wCmd);
1894 LeaveCriticalSection(&WDML_CritSect);
1898 /******************************************************************
1903 WDML_CONV* WDML_GetConv(HCONV hConv, BOOL checkConnected)
1905 WDML_CONV* pConv = (WDML_CONV*)hConv;
1907 /* FIXME: should do better checking */
1908 if (pConv == NULL) return NULL;
1910 if (checkConnected && !(pConv->wStatus & ST_CONNECTED))
1912 FIXME("found conv but ain't connected\n");
1915 if (GetCurrentThreadId() != pConv->instance->threadID)
1917 FIXME("wrong thread ID\n");
1924 /******************************************************************
1925 * WDML_GetConvFromWnd
1929 WDML_CONV* WDML_GetConvFromWnd(HWND hWnd)
1931 return (WDML_CONV*)GetWindowLongA(hWnd, GWL_WDML_CONVERSATION);
1934 /******************************************************************
1939 BOOL WDML_PostAck(WDML_CONV* pConv, WDML_SIDE side, WORD appRetCode,
1940 BOOL fBusy, BOOL fAck, UINT pmt, LPARAM lParam, UINT oldMsg)
1945 if (side == WDML_SERVER_SIDE)
1947 from = pConv->hwndServer;
1948 to = pConv->hwndClient;
1952 to = pConv->hwndServer;
1953 from = pConv->hwndClient;
1956 ddeAck.bAppReturnCode = appRetCode;
1957 ddeAck.reserved = 0;
1958 ddeAck.fBusy = fBusy;
1961 TRACE("Posting a %s ack\n", ddeAck.fAck ? "positive" : "negative");
1963 lParam = (lParam) ? ReuseDDElParam(lParam, oldMsg, WM_DDE_ACK, *(WORD*)&ddeAck, pmt) :
1964 PackDDElParam(WM_DDE_ACK, *(WORD*)&ddeAck, pmt);
1965 if (!PostMessageA(to, WM_DDE_ACK, (WPARAM)from, lParam))
1967 pConv->wStatus &= ~ST_CONNECTED;
1968 FreeDDElParam(WM_DDE_ACK, lParam);
1974 /*****************************************************************
1975 * DdeSetUserHandle (USER32.@)
1977 BOOL WINAPI DdeSetUserHandle(HCONV hConv, DWORD id, DWORD hUser)
1982 TRACE("(%p,%lx,%lx)\n", hConv, id, hUser);
1984 EnterCriticalSection(&WDML_CritSect);
1986 pConv = WDML_GetConv(hConv, FALSE);
1994 pConv->hUser = hUser;
2000 pXAct = WDML_FindTransaction(pConv, id);
2003 pXAct->hUser = hUser;
2007 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2012 LeaveCriticalSection(&WDML_CritSect);
2016 /******************************************************************
2017 * WDML_GetLocalConvInfo
2021 static BOOL WDML_GetLocalConvInfo(WDML_CONV* pConv, CONVINFO* ci, DWORD id)
2027 ci->hConvPartner = (pConv->wStatus & ST_ISLOCAL) ? (HCONV)((DWORD)pConv | 1) : 0;
2028 ci->hszSvcPartner = pConv->hszService;
2029 ci->hszServiceReq = pConv->hszService; /* FIXME: they shouldn't be the same, should they ? */
2030 ci->hszTopic = pConv->hszTopic;
2031 ci->wStatus = pConv->wStatus;
2033 side = (pConv->wStatus & ST_CLIENT) ? WDML_CLIENT_SIDE : WDML_SERVER_SIDE;
2035 for (pLink = pConv->instance->links[side]; pLink != NULL; pLink = pLink->next)
2037 if (pLink->hConv == (HCONV)pConv)
2039 ci->wStatus |= ST_ADVISE;
2044 /* FIXME: non handled status flags:
2050 ci->wConvst = pConv->wConvst; /* FIXME */
2052 ci->wLastError = 0; /* FIXME: note it's not the instance last error */
2054 ci->ConvCtxt = pConv->convContext;
2055 if (ci->wStatus & ST_CLIENT)
2057 ci->hwnd = pConv->hwndClient;
2058 ci->hwndPartner = pConv->hwndServer;
2062 ci->hwnd = pConv->hwndServer;
2063 ci->hwndPartner = pConv->hwndClient;
2067 ci->hUser = pConv->hUser;
2076 pXAct = WDML_FindTransaction(pConv, id);
2079 ci->hUser = pXAct->hUser;
2080 ci->hszItem = pXAct->hszItem;
2081 ci->wFmt = pXAct->wFmt;
2082 ci->wType = pXAct->wType;
2087 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2093 /******************************************************************
2094 * DdeQueryConvInfo (USER32.@)
2097 UINT WINAPI DdeQueryConvInfo(HCONV hConv, DWORD id, PCONVINFO lpConvInfo)
2099 UINT ret = lpConvInfo->cb;
2103 TRACE("(%p,%lx,%p)\n", hConv, id, lpConvInfo);
2107 FIXME("hConv is NULL\n");
2111 EnterCriticalSection(&WDML_CritSect);
2113 pConv = WDML_GetConv(hConv, FALSE);
2114 if (pConv != NULL && !WDML_GetLocalConvInfo(pConv, &ci, id))
2118 else if ((DWORD)hConv & 1)
2120 pConv = WDML_GetConv((HCONV)((DWORD)hConv & ~1), FALSE);
2123 FIXME("Request on remote conversation information is not implemented yet\n");
2127 LeaveCriticalSection(&WDML_CritSect);
2129 memcpy(lpConvInfo, &ci, min((size_t)lpConvInfo->cb, sizeof(ci)));
2133 /* ================================================================
2135 * Link (hot & warm) management
2137 * ================================================================ */
2139 /******************************************************************
2144 void WDML_AddLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2145 UINT wType, HSZ hszItem, UINT wFmt)
2149 pLink = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_LINK));
2156 pLink->hConv = hConv;
2157 pLink->transactionType = wType;
2158 WDML_IncHSZ(pInstance, pLink->hszItem = hszItem);
2160 pLink->next = pInstance->links[side];
2161 pInstance->links[side] = pLink;
2164 /******************************************************************
2169 void WDML_RemoveLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2170 HSZ hszItem, UINT uFmt)
2172 WDML_LINK* pPrev = NULL;
2173 WDML_LINK* pCurrent = NULL;
2175 pCurrent = pInstance->links[side];
2177 while (pCurrent != NULL)
2179 if (pCurrent->hConv == hConv &&
2180 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2181 pCurrent->uFmt == uFmt)
2183 if (pCurrent == pInstance->links[side])
2185 pInstance->links[side] = pCurrent->next;
2189 pPrev->next = pCurrent->next;
2192 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2193 HeapFree(GetProcessHeap(), 0, pCurrent);
2198 pCurrent = pCurrent->next;
2202 /* this function is called to remove all links related to the conv.
2203 It should be called from both client and server when terminating
2206 /******************************************************************
2207 * WDML_RemoveAllLinks
2211 void WDML_RemoveAllLinks(WDML_INSTANCE* pInstance, WDML_CONV* pConv, WDML_SIDE side)
2213 WDML_LINK* pPrev = NULL;
2214 WDML_LINK* pCurrent = NULL;
2215 WDML_LINK* pNext = NULL;
2217 pCurrent = pInstance->links[side];
2219 while (pCurrent != NULL)
2221 if (pCurrent->hConv == (HCONV)pConv)
2223 if (pCurrent == pInstance->links[side])
2225 pInstance->links[side] = pCurrent->next;
2226 pNext = pCurrent->next;
2230 pPrev->next = pCurrent->next;
2231 pNext = pCurrent->next;
2234 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2236 HeapFree(GetProcessHeap(), 0, pCurrent);
2243 pCurrent = pCurrent->next;
2252 /******************************************************************
2257 WDML_LINK* WDML_FindLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2258 HSZ hszItem, BOOL use_fmt, UINT uFmt)
2260 WDML_LINK* pCurrent = NULL;
2262 for (pCurrent = pInstance->links[side]; pCurrent != NULL; pCurrent = pCurrent->next)
2264 /* we don't need to check for transaction type as it can be altered */
2266 if (pCurrent->hConv == hConv &&
2267 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2268 (!use_fmt || pCurrent->uFmt == uFmt))
2278 /* ================================================================
2280 * Transaction management
2282 * ================================================================ */
2284 /******************************************************************
2285 * WDML_AllocTransaction
2287 * Alloc a transaction structure for handling the message ddeMsg
2289 WDML_XACT* WDML_AllocTransaction(WDML_INSTANCE* pInstance, UINT ddeMsg,
2290 UINT wFmt, HSZ hszItem)
2293 static WORD tid = 1; /* FIXME: wrap around */
2295 pXAct = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_XACT));
2298 pInstance->lastError = DMLERR_MEMORY_ERROR;
2302 pXAct->xActID = tid++;
2303 pXAct->ddeMsg = ddeMsg;
2304 pXAct->hDdeData = 0;
2309 if ((pXAct->hszItem = hszItem)) WDML_IncHSZ(pInstance, pXAct->hszItem);
2317 /******************************************************************
2318 * WDML_QueueTransaction
2320 * Adds a transaction to the list of transaction
2322 void WDML_QueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2326 /* advance to last in queue */
2327 for (pt = &pConv->transactions; *pt != NULL; pt = &(*pt)->next);
2331 /******************************************************************
2332 * WDML_UnQueueTransaction
2336 BOOL WDML_UnQueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2340 for (pt = &pConv->transactions; *pt; pt = &(*pt)->next)
2351 /******************************************************************
2352 * WDML_FreeTransaction
2356 void WDML_FreeTransaction(WDML_INSTANCE* pInstance, WDML_XACT* pXAct, BOOL doFreePmt)
2358 /* free pmt(s) in pXAct too. check against one for not deleting TRUE return values */
2359 if (doFreePmt && (DWORD)pXAct->hMem > 1)
2361 GlobalFree(pXAct->hMem);
2363 if (pXAct->hszItem) WDML_DecHSZ(pInstance, pXAct->hszItem);
2365 HeapFree(GetProcessHeap(), 0, pXAct);
2368 /******************************************************************
2369 * WDML_FindTransaction
2373 WDML_XACT* WDML_FindTransaction(WDML_CONV* pConv, DWORD tid)
2378 for (pXAct = pConv->transactions; pXAct; pXAct = pXAct->next)
2380 if (pXAct->xActID == tid)
2386 /* ================================================================
2388 * Information broadcast across DDEML implementations
2390 * ================================================================ */
2392 struct tagWDML_BroadcastPmt
2400 /******************************************************************
2401 * WDML_BroadcastEnumProc
2405 static BOOL CALLBACK WDML_BroadcastEnumProc(HWND hWnd, LPARAM lParam)
2407 struct tagWDML_BroadcastPmt* s = (struct tagWDML_BroadcastPmt*)lParam;
2410 if (GetClassNameA(hWnd, buffer, sizeof(buffer)) > 0 &&
2411 strcmp(buffer, s->clsName) == 0)
2413 PostMessageA(hWnd, s->uMsg, s->wParam, s->lParam);
2418 /******************************************************************
2419 * WDML_BroadcastDDEWindows
2423 void WDML_BroadcastDDEWindows(const char* clsName, UINT uMsg, WPARAM wParam, LPARAM lParam)
2425 struct tagWDML_BroadcastPmt s;
2427 s.clsName = clsName;
2431 EnumWindows(WDML_BroadcastEnumProc, (LPARAM)&s);