4 * Copyright 1997 Alexandre Julliard
5 * Copyright 1997 Len White
6 * Copyright 1999 Keith Matthews
8 * Copyright 2001 Eric Pouech
9 * Copyright 2003, 2004, 2005 Dmitry Timoshkov
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.
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.
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
27 #include "wine/port.h"
39 #include "dde_private.h"
40 #include "wine/unicode.h"
41 #include "wine/debug.h"
43 WINE_DEFAULT_DEBUG_CHANNEL(ddeml);
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))
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};
53 /* protection for instance list */
54 static CRITICAL_SECTION WDML_CritSect;
55 static CRITICAL_SECTION_DEBUG critsect_debug =
58 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
59 0, 0, { (DWORD_PTR)(__FILE__ ": WDML_CritSect") }
61 static CRITICAL_SECTION WDML_CritSect = { &critsect_debug, -1, 0, 0, 0, 0 };
63 /* ================================================================
65 * Pure DDE (non DDEML) management
67 * ================================================================ */
70 /*****************************************************************
71 * PackDDElParam (USER32.@)
76 LPARAM WINAPI PackDDElParam(UINT msg, UINT_PTR uiLo, UINT_PTR uiHi)
87 if (!(hMem = GlobalAlloc(GMEM_DDESHARE, sizeof(UINT_PTR) * 2)))
89 ERR("GlobalAlloc failed\n");
92 if (!(params = GlobalLock(hMem)))
94 ERR("GlobalLock failed (%p)\n", hMem);
106 return MAKELPARAM(uiLo, uiHi);
111 /*****************************************************************
112 * UnpackDDElParam (USER32.@)
118 BOOL WINAPI UnpackDDElParam(UINT msg, LPARAM lParam,
119 PUINT_PTR uiLo, PUINT_PTR uiHi)
129 if (!lParam || !(params = GlobalLock((HGLOBAL)lParam)))
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 %08lx %08lx\n", uiLo, uiHi);
210 GlobalUnlock( (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 %d 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 DefWindowProcW(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 WNDCLASSEXW wndclass;
351 TRACE("(%p,%p,0x%x,%d,0x%x)\n",
352 pidInst, pfnCallback, afCmd, ulRes, bUnicode);
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 = 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->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;
390 /* isolate CBF flags in one go, expect this will go the way of all attempts to be clever !! */
392 pInstance->CBFflags = afCmd^((afCmd&MF_MASK)|((afCmd&APPCMD_MASK)|(afCmd&APPCLASS_MASK)));
394 if (!pInstance->clientOnly)
396 /* Check for other way of setting Client-only !! */
397 pInstance->clientOnly =
398 (pInstance->CBFflags & CBF_FAIL_ALLSVRXACTIONS) == CBF_FAIL_ALLSVRXACTIONS;
401 TRACE("instance created - checking validity\n");
405 /* Initialisation of new Instance Identifier */
406 TRACE("new instance, callback %p flags %X\n",pfnCallback,afCmd);
408 EnterCriticalSection(&WDML_CritSect);
410 if (WDML_InstanceList == NULL)
412 /* can't be another instance in this case, assign to the base pointer */
413 WDML_InstanceList = pInstance;
415 /* since first must force filter of XTYP_CONNECT and XTYP_WILDCONNECT for
417 * ------------------------------- NOTE NOTE NOTE --------------------------
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 !!!
424 pInstance->CBFflags = pInstance->CBFflags|APPCMD_FILTERINITS;
425 TRACE("First application instance detected OK\n");
426 /* allocate new instance ID */
427 WDML_IncrementInstanceId(pInstance);
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)
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 ?
444 if (pInstance->instanceID == reference_inst->instanceID)
446 /* Check 1 - must be same Client-only state */
448 if (pInstance->clientOnly != reference_inst->clientOnly)
450 ret = DMLERR_DLL_USAGE;
454 /* Check 2 - cannot use 'Monitor' with any non-monitor modes */
456 if (pInstance->monitor != reference_inst->monitor)
458 ret = DMLERR_INVALIDPARAMETER;
462 /* Check 3 - must supply different callback address */
464 if (pInstance->callback == reference_inst->callback)
466 ret = DMLERR_DLL_USAGE;
470 reference_inst = reference_inst->next;
472 /* All cleared, add to chain */
474 TRACE("Application Instance checks finished\n");
475 WDML_IncrementInstanceId(pInstance);
476 reference_inst->next = pInstance;
478 LeaveCriticalSection(&WDML_CritSect);
480 *pidInst = pInstance->instanceID;
482 /* for deadlock issues, windows must always be created when outside the critical section */
483 wndclass.cbSize = sizeof(wndclass);
485 wndclass.lpfnWndProc = WDML_EventProc;
486 wndclass.cbClsExtra = 0;
487 wndclass.cbWndExtra = sizeof(ULONG_PTR);
488 wndclass.hInstance = 0;
490 wndclass.hCursor = 0;
491 wndclass.hbrBackground = 0;
492 wndclass.lpszMenuName = NULL;
493 wndclass.lpszClassName = WDML_szEventClass;
494 wndclass.hIconSm = 0;
496 RegisterClassExW(&wndclass);
498 pInstance->hwndEvent = CreateWindowW(WDML_szEventClass, NULL,
499 WS_POPUP, 0, 0, 0, 0,
502 SetWindowLongPtrW(pInstance->hwndEvent, GWL_WDML_INSTANCE, (ULONG_PTR)pInstance);
504 TRACE("New application instance processing finished OK\n");
508 /* Reinitialisation situation --- FIX */
509 TRACE("reinitialisation of (%p,%p,0x%x,%d): stub\n", pidInst, pfnCallback, afCmd, ulRes);
511 EnterCriticalSection(&WDML_CritSect);
513 if (WDML_InstanceList == NULL)
515 ret = DMLERR_INVALIDPARAMETER;
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;
574 HeapFree(GetProcessHeap(), 0, pInstance); /* finished - release heap space used as work store */
576 LeaveCriticalSection(&WDML_CritSect);
579 return DMLERR_NO_ERROR;
581 HeapFree(GetProcessHeap(), 0, pInstance);
582 LeaveCriticalSection(&WDML_CritSect);
586 /******************************************************************************
587 * DdeInitializeA (USER32.@)
589 * See DdeInitializeW.
591 UINT WINAPI DdeInitializeA(LPDWORD pidInst, PFNCALLBACK pfnCallback,
592 DWORD afCmd, DWORD ulRes)
594 return WDML_Initialize(pidInst, pfnCallback, afCmd, ulRes, FALSE, FALSE);
597 /******************************************************************************
598 * DdeInitializeW [USER32.@]
599 * Registers an application with the DDEML
602 * pidInst [I] Pointer to instance identifier
603 * pfnCallback [I] Pointer to callback function
604 * afCmd [I] Set of command and filter flags
608 * Success: DMLERR_NO_ERROR
609 * Failure: DMLERR_DLL_USAGE, DMLERR_INVALIDPARAMETER, DMLERR_SYS_ERROR
611 UINT WINAPI DdeInitializeW(LPDWORD pidInst, PFNCALLBACK pfnCallback,
612 DWORD afCmd, DWORD ulRes)
614 return WDML_Initialize(pidInst, pfnCallback, afCmd, ulRes, TRUE, FALSE);
617 /*****************************************************************
618 * DdeUninitialize [USER32.@] Frees DDEML resources
621 * idInst [I] Instance identifier
628 BOOL WINAPI DdeUninitialize(DWORD idInst)
630 /* Stage one - check if we have a handle for this instance
632 WDML_INSTANCE* pInstance;
634 WDML_CONV* pConvNext;
636 TRACE("(%d)\n", idInst);
638 /* First check instance
640 pInstance = WDML_GetInstance(idInst);
641 if (pInstance == NULL)
644 * Needs something here to record NOT_INITIALIZED ready for DdeGetLastError
649 /* first terminate all conversations client side
650 * this shall close existing links...
652 for (pConv = pInstance->convs[WDML_CLIENT_SIDE]; pConv != NULL; pConv = pConvNext)
654 pConvNext = pConv->next;
655 DdeDisconnect((HCONV)pConv);
657 if (pInstance->convs[WDML_CLIENT_SIDE])
658 FIXME("still pending conversations\n");
660 /* then unregister all known service names */
661 DdeNameService(idInst, 0, 0, DNS_UNREGISTER);
663 /* Free the nodes that were not freed by this instance
664 * and remove the nodes from the list of HSZ nodes.
666 WDML_FreeAllHSZ(pInstance);
668 DestroyWindow(pInstance->hwndEvent);
670 /* OK now delete the instance handle itself */
672 if (WDML_InstanceList == pInstance)
674 /* special case - the first/only entry */
675 WDML_InstanceList = pInstance->next;
679 /* general case, remove entry */
682 for (inst = WDML_InstanceList; inst->next != pInstance; inst = inst->next);
683 inst->next = pInstance->next;
685 /* release the heap entry
687 HeapFree(GetProcessHeap(), 0, pInstance);
692 /******************************************************************
693 * WDML_NotifyThreadExit
697 void WDML_NotifyThreadDetach(void)
699 WDML_INSTANCE* pInstance;
701 DWORD tid = GetCurrentThreadId();
703 EnterCriticalSection(&WDML_CritSect);
704 for (pInstance = WDML_InstanceList; pInstance != NULL; pInstance = next)
706 next = pInstance->next;
707 if (pInstance->threadID == tid)
709 LeaveCriticalSection(&WDML_CritSect);
710 DdeUninitialize(pInstance->instanceID);
711 EnterCriticalSection(&WDML_CritSect);
714 LeaveCriticalSection(&WDML_CritSect);
717 /******************************************************************
718 * WDML_InvokeCallback
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)
728 if (pInstance == NULL)
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)
736 ret = WDML_InvokeCallback16(pInstance->callback, uType, uFmt, hConv,
737 hsz1, hsz2, hdata, dwData1, dwData2);
741 ret = pInstance->callback(uType, uFmt, hConv, hsz1, hsz2, hdata, dwData1, dwData2);
743 TRACE("done => %p\n", ret);
747 /*****************************************************************************
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
754 WDML_INSTANCE* WDML_GetInstance(DWORD instId)
756 WDML_INSTANCE* pInstance;
758 EnterCriticalSection(&WDML_CritSect);
760 for (pInstance = WDML_InstanceList; pInstance != NULL; pInstance = pInstance->next)
762 if (pInstance->instanceID == instId)
764 if (GetCurrentThreadId() != pInstance->threadID)
766 FIXME("Tried to get instance from wrong thread\n");
773 LeaveCriticalSection(&WDML_CritSect);
776 WARN("Instance entry missing for id %04x\n", instId);
780 /******************************************************************
781 * WDML_GetInstanceFromWnd
785 WDML_INSTANCE* WDML_GetInstanceFromWnd(HWND hWnd)
787 return (WDML_INSTANCE*)GetWindowLongPtrW(hWnd, GWL_WDML_INSTANCE);
790 /******************************************************************************
791 * DdeGetLastError [USER32.@] Gets most recent error code
794 * idInst [I] Instance identifier
799 UINT WINAPI DdeGetLastError(DWORD idInst)
802 WDML_INSTANCE* pInstance;
804 /* First check instance
806 pInstance = WDML_GetInstance(idInst);
807 if (pInstance == NULL)
809 error_code = DMLERR_INVALIDPARAMETER;
813 error_code = pInstance->lastError;
814 pInstance->lastError = 0;
820 /* ================================================================
824 * ================================================================ */
827 /******************************************************************
832 static HSZNode* WDML_FindNode(WDML_INSTANCE* pInstance, HSZ hsz)
836 if (pInstance == NULL) return NULL;
838 for (pNode = pInstance->nodeList; pNode != NULL; pNode = pNode->next)
840 if (pNode->hsz == hsz) break;
842 if (!pNode) WARN("HSZ %p not found\n", hsz);
846 /******************************************************************
847 * WDML_MakeAtomFromHsz
849 * Creates a global atom from an existing HSZ
850 * Generally used before sending an HSZ as an atom to a remote app
852 ATOM WDML_MakeAtomFromHsz(HSZ hsz)
854 WCHAR nameBuffer[MAX_BUFFER_LEN];
856 if (GetAtomNameW(HSZ2ATOM(hsz), nameBuffer, MAX_BUFFER_LEN))
857 return GlobalAddAtomW(nameBuffer);
858 WARN("HSZ %p not found\n", hsz);
862 /******************************************************************
863 * WDML_MakeHszFromAtom
865 * Creates a HSZ from an existing global atom
866 * Generally used while receiving a global atom and transforming it
869 HSZ WDML_MakeHszFromAtom(const WDML_INSTANCE* pInstance, ATOM atom)
871 WCHAR nameBuffer[MAX_BUFFER_LEN];
873 if (!atom) return NULL;
875 if (GlobalGetAtomNameW(atom, nameBuffer, MAX_BUFFER_LEN))
877 TRACE("%x => %s\n", atom, debugstr_w(nameBuffer));
878 return DdeCreateStringHandleW(pInstance->instanceID, nameBuffer, CP_WINUNICODE);
880 WARN("ATOM 0x%x not found\n", atom);
884 /******************************************************************
889 BOOL WDML_IncHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
893 pNode = WDML_FindNode(pInstance, hsz);
894 if (!pNode) return FALSE;
900 /******************************************************************************
901 * WDML_DecHSZ (INTERNAL)
903 * Decrease the ref count of an HSZ. If it reaches 0, the node is removed from the list
905 * Returns -1 is the HSZ isn't found, otherwise it's the current (after --) of the ref count
907 BOOL WDML_DecHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
909 HSZNode* pPrev = NULL;
912 for (pCurrent = pInstance->nodeList; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
914 /* If we found the node we were looking for and its ref count is one,
917 if (pCurrent->hsz == hsz)
919 if (--pCurrent->refCount == 0)
921 if (pCurrent == pInstance->nodeList)
923 pInstance->nodeList = pCurrent->next;
927 pPrev->next = pCurrent->next;
929 HeapFree(GetProcessHeap(), 0, pCurrent);
930 DeleteAtom(HSZ2ATOM(hsz));
935 WARN("HSZ %p not found\n", hsz);
940 /******************************************************************************
941 * WDML_FreeAllHSZ (INTERNAL)
943 * Frees up all the strings still allocated in the list and
944 * remove all the nodes from the list of HSZ nodes.
946 void WDML_FreeAllHSZ(WDML_INSTANCE* pInstance)
948 /* Free any strings created in this instance.
950 while (pInstance->nodeList != NULL)
952 DdeFreeStringHandle(pInstance->instanceID, pInstance->nodeList->hsz);
956 /******************************************************************************
957 * InsertHSZNode (INTERNAL)
959 * Insert a node to the head of the list.
961 static void WDML_InsertHSZNode(WDML_INSTANCE* pInstance, HSZ hsz)
965 HSZNode* pNew = NULL;
966 /* Create a new node for this HSZ.
968 pNew = HeapAlloc(GetProcessHeap(), 0, sizeof(HSZNode));
972 pNew->next = pInstance->nodeList;
974 pInstance->nodeList = pNew;
978 ERR("Primary HSZ Node allocation failed - out of memory\n");
983 /******************************************************************
988 static int WDML_QueryString(WDML_INSTANCE* pInstance, HSZ hsz, LPVOID ptr, DWORD cchMax,
991 WCHAR pString[MAX_BUFFER_LEN];
993 /* If psz is null, we have to return only the length
999 cchMax = MAX_BUFFER_LEN;
1002 /* if there is no input windows returns a NULL string */
1013 ret = GetAtomNameA(HSZ2ATOM(hsz), ptr, cchMax);
1016 ret = GetAtomNameW(HSZ2ATOM(hsz), ptr, cchMax);
1019 ERR("Unknown code page %d\n", codepage);
1025 /*****************************************************************
1026 * DdeQueryStringA [USER32.@]
1028 DWORD WINAPI DdeQueryStringA(DWORD idInst, HSZ hsz, LPSTR psz, DWORD cchMax, INT iCodePage)
1031 WDML_INSTANCE* pInstance;
1033 TRACE("(%d, %p, %p, %d, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1035 /* First check instance
1037 pInstance = WDML_GetInstance(idInst);
1038 if (pInstance != NULL)
1040 if (iCodePage == 0) iCodePage = CP_WINANSI;
1041 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1044 TRACE("returning %d (%s)\n", ret, debugstr_a(psz));
1048 /*****************************************************************
1049 * DdeQueryStringW [USER32.@]
1052 DWORD WINAPI DdeQueryStringW(DWORD idInst, HSZ hsz, LPWSTR psz, DWORD cchMax, INT iCodePage)
1055 WDML_INSTANCE* pInstance;
1057 TRACE("(%d, %p, %p, %d, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1059 /* First check instance
1061 pInstance = WDML_GetInstance(idInst);
1062 if (pInstance != NULL)
1064 if (iCodePage == 0) iCodePage = CP_WINUNICODE;
1065 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1068 TRACE("returning %d (%s)\n", ret, debugstr_w(psz));
1072 /******************************************************************
1077 static HSZ WDML_CreateString(WDML_INSTANCE* pInstance, LPCVOID ptr, int codepage)
1084 hsz = ATOM2HSZ(AddAtomA(ptr));
1085 TRACE("added atom %s with HSZ %p,\n", debugstr_a(ptr), hsz);
1088 hsz = ATOM2HSZ(AddAtomW(ptr));
1089 TRACE("added atom %s with HSZ %p,\n", debugstr_w(ptr), hsz);
1092 ERR("Unknown code page %d\n", codepage);
1095 WDML_InsertHSZNode(pInstance, hsz);
1099 /*****************************************************************
1100 * DdeCreateStringHandleA [USER32.@]
1102 * See DdeCreateStringHandleW.
1104 HSZ WINAPI DdeCreateStringHandleA(DWORD idInst, LPCSTR psz, INT codepage)
1107 WDML_INSTANCE* pInstance;
1109 TRACE("(%d,%s,%d)\n", idInst, debugstr_a(psz), codepage);
1111 pInstance = WDML_GetInstance(idInst);
1114 if (codepage == 0) codepage = CP_WINANSI;
1115 hsz = WDML_CreateString(pInstance, psz, codepage);
1122 /******************************************************************************
1123 * DdeCreateStringHandleW [USER32.@] Creates handle to identify string
1126 * idInst [I] Instance identifier
1127 * psz [I] Pointer to string
1128 * codepage [I] Code page identifier
1130 * Success: String handle
1133 HSZ WINAPI DdeCreateStringHandleW(DWORD idInst, LPCWSTR psz, INT codepage)
1135 WDML_INSTANCE* pInstance;
1138 pInstance = WDML_GetInstance(idInst);
1141 if (codepage == 0) codepage = CP_WINUNICODE;
1142 hsz = WDML_CreateString(pInstance, psz, codepage);
1148 /*****************************************************************
1149 * DdeFreeStringHandle (USER32.@)
1154 BOOL WINAPI DdeFreeStringHandle(DWORD idInst, HSZ hsz)
1156 WDML_INSTANCE* pInstance;
1159 TRACE("(%d,%p):\n", idInst, hsz);
1161 /* First check instance
1163 pInstance = WDML_GetInstance(idInst);
1165 ret = WDML_DecHSZ(pInstance, hsz);
1170 /*****************************************************************
1171 * DdeKeepStringHandle (USER32.@)
1177 BOOL WINAPI DdeKeepStringHandle(DWORD idInst, HSZ hsz)
1179 WDML_INSTANCE* pInstance;
1182 TRACE("(%d,%p):\n", idInst, hsz);
1184 /* First check instance
1186 pInstance = WDML_GetInstance(idInst);
1188 ret = WDML_IncHSZ(pInstance, hsz);
1193 /*****************************************************************
1194 * DdeCmpStringHandles (USER32.@)
1196 * Compares the value of two string handles. This comparison is
1197 * not case sensitive.
1200 * hsz1 [I] Handle to the first string
1201 * hsz2 [I] Handle to the second string
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
1208 INT WINAPI DdeCmpStringHandles(HSZ hsz1, HSZ hsz2)
1210 WCHAR psz1[MAX_BUFFER_LEN];
1211 WCHAR psz2[MAX_BUFFER_LEN];
1215 ret1 = GetAtomNameW(HSZ2ATOM(hsz1), psz1, MAX_BUFFER_LEN);
1216 ret2 = GetAtomNameW(HSZ2ATOM(hsz2), psz2, MAX_BUFFER_LEN);
1218 TRACE("(%p<%s> %p<%s>);\n", hsz1, debugstr_w(psz1), hsz2, debugstr_w(psz2));
1220 /* Make sure we found both strings. */
1221 if (ret1 == 0 && ret2 == 0)
1223 /* If both are not found, return both "zero strings". */
1228 /* If hsz1 is a not found, return hsz1 is "zero string". */
1233 /* If hsz2 is a not found, return hsz2 is "zero string". */
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.
1258 /* ================================================================
1260 * Data handle management
1262 * ================================================================ */
1264 /*****************************************************************
1265 * DdeCreateDataHandle (USER32.@)
1267 HDDEDATA WINAPI DdeCreateDataHandle(DWORD idInst, LPBYTE pSrc, DWORD cb, DWORD cbOff,
1268 HSZ hszItem, UINT wFmt, UINT afCmd)
1270 /* For now, we ignore idInst, hszItem.
1271 * The purpose of these arguments still need to be investigated.
1276 DDE_DATAHANDLE_HEAD* pDdh;
1277 WCHAR psz[MAX_BUFFER_LEN];
1279 if (!GetAtomNameW(HSZ2ATOM(hszItem), psz, MAX_BUFFER_LEN))
1281 psz[0] = HSZ2ATOM(hszItem);
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);
1288 if (afCmd != 0 && afCmd != HDATA_APPOWNED)
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))))
1294 ERR("GlobalAlloc failed\n");
1298 pDdh = GlobalLock(hMem);
1305 pDdh->cfFormat = wFmt;
1306 pDdh->bAppOwned = (afCmd == HDATA_APPOWNED);
1308 pByte = (LPBYTE)(pDdh + 1);
1311 memcpy(pByte, pSrc + cbOff, cb);
1315 TRACE("=> %p\n", hMem);
1316 return (HDDEDATA)hMem;
1319 /*****************************************************************
1321 * DdeAddData (USER32.@)
1323 HDDEDATA WINAPI DdeAddData(HDDEDATA hData, LPBYTE pSrc, DWORD cb, DWORD cbOff)
1325 DWORD old_sz, new_sz;
1328 TRACE("(%p,%p,cb %d, cbOff %d)\n", hData, pSrc, cb, cbOff);
1330 pDst = DdeAccessData(hData, &old_sz);
1331 if (!pDst) return 0;
1333 new_sz = cb + cbOff;
1334 if (new_sz > old_sz)
1336 DdeUnaccessData(hData);
1337 hData = GlobalReAlloc(hData, new_sz + sizeof(DDE_DATAHANDLE_HEAD),
1338 GMEM_MOVEABLE | GMEM_DDESHARE);
1339 pDst = DdeAccessData(hData, &old_sz);
1342 if (!pDst) return 0;
1344 memcpy(pDst + cbOff, pSrc, cb);
1345 DdeUnaccessData(hData);
1349 /******************************************************************************
1350 * DdeGetData [USER32.@] Copies data from DDE object to local buffer
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
1360 * Size of memory object associated with handle
1362 DWORD WINAPI DdeGetData(HDDEDATA hData, LPBYTE pDst, DWORD cbMax, DWORD cbOff)
1364 DWORD dwSize, dwRet;
1367 TRACE("(%p,%p,%d,%d)\n", hData, pDst, cbMax, cbOff);
1369 pByte = DdeAccessData(hData, &dwSize);
1377 else if (cbOff + cbMax < dwSize)
1381 else if (cbOff < dwSize)
1383 dwRet = dwSize - cbOff;
1389 if (pDst && dwRet != 0)
1391 memcpy(pDst, pByte + cbOff, dwRet);
1393 DdeUnaccessData(hData);
1402 /*****************************************************************
1403 * DdeAccessData (USER32.@)
1405 LPBYTE WINAPI DdeAccessData(HDDEDATA hData, LPDWORD pcbDataSize)
1407 HGLOBAL hMem = hData;
1408 DDE_DATAHANDLE_HEAD* pDdh;
1410 TRACE("(%p,%p)\n", hData, pcbDataSize);
1412 pDdh = GlobalLock(hMem);
1415 ERR("Failed on GlobalLock(%p)\n", hMem);
1419 if (pcbDataSize != NULL)
1421 *pcbDataSize = GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD);
1423 TRACE("=> %p (%lu) fmt %04x\n", pDdh + 1, GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD), pDdh->cfFormat);
1424 return (LPBYTE)(pDdh + 1);
1427 /*****************************************************************
1428 * DdeUnaccessData (USER32.@)
1430 BOOL WINAPI DdeUnaccessData(HDDEDATA hData)
1432 HGLOBAL hMem = hData;
1434 TRACE("(%p)\n", hData);
1441 /*****************************************************************
1442 * DdeFreeDataHandle (USER32.@)
1444 BOOL WINAPI DdeFreeDataHandle(HDDEDATA hData)
1446 TRACE("(%p)\n", hData);
1447 return GlobalFree(hData) == 0;
1450 /******************************************************************
1455 BOOL WDML_IsAppOwned(HDDEDATA hData)
1457 DDE_DATAHANDLE_HEAD* pDdh;
1460 pDdh = GlobalLock(hData);
1463 ret = pDdh->bAppOwned;
1464 GlobalUnlock(hData);
1469 /* ================================================================
1471 * Global <=> Data handle management
1473 * ================================================================ */
1475 /* Note: we use a DDEDATA, but layout of DDEDATA, DDEADVISE and DDEPOKE structures is similar:
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
1482 HDDEDATA WDML_Global2DataHandle(HGLOBAL hMem, WINE_DDEHEAD* p)
1490 pDd = GlobalLock(hMem);
1491 size = GlobalSize(hMem) - sizeof(WINE_DDEHEAD);
1494 if (p) memcpy(p, pDd, sizeof(WINE_DDEHEAD));
1495 switch (pDd->cfFormat)
1498 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1499 pDd->cfFormat, hMem);
1503 ret = DdeCreateDataHandle(0, pDd->Value, size, 0, 0, pDd->cfFormat, 0);
1506 if (size >= sizeof(BITMAP))
1508 BITMAP* bmp = (BITMAP*)pDd->Value;
1509 int count = bmp->bmWidthBytes * bmp->bmHeight * bmp->bmPlanes;
1510 if (size >= sizeof(BITMAP) + count)
1514 if ((hbmp = CreateBitmap(bmp->bmWidth, bmp->bmHeight,
1515 bmp->bmPlanes, bmp->bmBitsPixel,
1516 pDd->Value + sizeof(BITMAP))))
1518 ret = DdeCreateDataHandle(0, (LPBYTE)&hbmp, sizeof(hbmp),
1519 0, 0, CF_BITMAP, 0);
1521 else ERR("Can't create bmp\n");
1525 ERR("Wrong count: %u / %d\n", size, count);
1527 } else ERR("No bitmap header\n");
1536 /******************************************************************
1537 * WDML_DataHandle2Global
1541 HGLOBAL WDML_DataHandle2Global(HDDEDATA hDdeData, BOOL fResponse, BOOL fRelease,
1542 BOOL fDeferUpd, BOOL fAckReq)
1544 DDE_DATAHANDLE_HEAD* pDdh;
1548 dwSize = GlobalSize((HGLOBAL)hDdeData) - sizeof(DDE_DATAHANDLE_HEAD);
1549 pDdh = GlobalLock((HGLOBAL)hDdeData);
1552 WINE_DDEHEAD* wdh = NULL;
1554 switch (pDdh->cfFormat)
1557 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1558 pDdh->cfFormat, hDdeData);
1562 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, sizeof(WINE_DDEHEAD) + dwSize);
1563 if (hMem && (wdh = GlobalLock(hMem)))
1565 memcpy(wdh + 1, pDdh + 1, dwSize);
1569 if (dwSize >= sizeof(HBITMAP))
1573 HBITMAP hbmp = *(HBITMAP*)(pDdh + 1);
1575 if (GetObjectW(hbmp, sizeof(bmp), &bmp))
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)))
1582 memcpy(wdh + 1, &bmp, sizeof(bmp));
1583 GetBitmapBits(hbmp, count, ((char*)(wdh + 1)) + sizeof(bmp));
1592 wdh->fResponse = fResponse;
1593 wdh->fRelease = fRelease;
1594 wdh->fDeferUpd = fDeferUpd;
1595 wdh->fAckReq = fAckReq;
1596 wdh->cfFormat = pDdh->cfFormat;
1599 GlobalUnlock((HGLOBAL)hDdeData);
1605 /* ================================================================
1609 * ================================================================ */
1611 /******************************************************************
1616 WDML_SERVER* WDML_AddServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1618 static const WCHAR fmtW[] = {'%','s','(','0','x','%','0','8','l','x',')',0};
1619 WDML_SERVER* pServer;
1623 pServer = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_SERVER));
1624 if (pServer == NULL) return NULL;
1626 pServer->hszService = hszService;
1627 WDML_IncHSZ(pInstance, hszService);
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);
1633 pServer->atomService = WDML_MakeAtomFromHsz(pServer->hszService);
1634 pServer->atomServiceSpec = WDML_MakeAtomFromHsz(pServer->hszServiceSpec);
1636 pServer->filterOn = TRUE;
1638 pServer->next = pInstance->servers;
1639 pInstance->servers = pServer;
1643 /******************************************************************
1648 void WDML_RemoveServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1650 WDML_SERVER* pPrev = NULL;
1651 WDML_SERVER* pServer = NULL;
1653 WDML_CONV* pConvNext;
1655 pServer = pInstance->servers;
1657 while (pServer != NULL)
1659 if (DdeCmpStringHandles(pServer->hszService, hszService) == 0)
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)
1666 pConvNext = pConv->next;
1667 if (DdeCmpStringHandles(pConv->hszService, hszService) == 0)
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);
1675 if (pServer == pInstance->servers)
1677 pInstance->servers = pServer->next;
1681 pPrev->next = pServer->next;
1684 DestroyWindow(pServer->hwndServer);
1685 WDML_DecHSZ(pInstance, pServer->hszServiceSpec);
1686 WDML_DecHSZ(pInstance, pServer->hszService);
1688 GlobalDeleteAtom(pServer->atomService);
1689 GlobalDeleteAtom(pServer->atomServiceSpec);
1691 HeapFree(GetProcessHeap(), 0, pServer);
1696 pServer = pServer->next;
1700 /*****************************************************************************
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
1707 WDML_SERVER* WDML_FindServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1709 WDML_SERVER* pServer;
1711 for (pServer = pInstance->servers; pServer != NULL; pServer = pServer->next)
1713 if (hszService == pServer->hszService)
1718 TRACE("Service name missing\n");
1722 /* ================================================================
1724 * Conversation management
1726 * ================================================================ */
1728 /******************************************************************
1733 WDML_CONV* WDML_AddConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1734 HSZ hszService, HSZ hszTopic, HWND hwndClient, HWND hwndServer)
1738 /* no conversation yet, add it */
1739 pConv = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_CONV));
1740 if (!pConv) return NULL;
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;
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))
1756 pConv->wStatus |= ST_ISSELF;
1758 pConv->wConvst = XST_NULL;
1760 pConv->next = pInstance->convs[side];
1761 pInstance->convs[side] = pConv;
1763 TRACE("pConv->wStatus %04x pInstance(%p)\n", pConv->wStatus, pInstance);
1768 /******************************************************************
1773 WDML_CONV* WDML_FindConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1774 HSZ hszService, HSZ hszTopic)
1776 WDML_CONV* pCurrent = NULL;
1778 for (pCurrent = pInstance->convs[side]; pCurrent != NULL; pCurrent = pCurrent->next)
1780 if (DdeCmpStringHandles(pCurrent->hszService, hszService) == 0 &&
1781 DdeCmpStringHandles(pCurrent->hszTopic, hszTopic) == 0)
1790 /******************************************************************
1795 void WDML_RemoveConv(WDML_CONV* pRef, WDML_SIDE side)
1797 WDML_CONV* pPrev = NULL;
1798 WDML_CONV* pCurrent;
1800 WDML_XACT* pXActNext;
1806 /* remove any pending transaction */
1807 for (pXAct = pRef->transactions; pXAct != NULL; pXAct = pXActNext)
1809 pXActNext = pXAct->next;
1810 WDML_FreeTransaction(pRef->instance, pXAct, TRUE);
1813 WDML_RemoveAllLinks(pRef->instance, pRef, side);
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
1819 /* destroy conversation window, but first remove pConv from hWnd.
1820 * this would help the wndProc do appropriate handling upon a WM_DESTROY message
1822 hWnd = (side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer;
1823 SetWindowLongPtrW(hWnd, GWL_WDML_CONVERSATION, 0);
1825 DestroyWindow((side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer);
1827 WDML_DecHSZ(pRef->instance, pRef->hszService);
1828 WDML_DecHSZ(pRef->instance, pRef->hszTopic);
1830 for (pCurrent = pRef->instance->convs[side]; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
1832 if (pCurrent == pRef)
1834 if (pCurrent == pRef->instance->convs[side])
1836 pRef->instance->convs[side] = pCurrent->next;
1840 pPrev->next = pCurrent->next;
1842 pCurrent->magic = 0;
1843 HeapFree(GetProcessHeap(), 0, pCurrent);
1849 /******************************************************************
1850 * WDML_EnableCallback
1852 static BOOL WDML_EnableCallback(WDML_CONV *pConv, UINT wCmd)
1854 if (wCmd == EC_DISABLE)
1856 pConv->wStatus |= ST_BLOCKED;
1857 TRACE("EC_DISABLE: conv %p status flags %04x\n", pConv, pConv->wStatus);
1861 if (wCmd == EC_QUERYWAITING)
1862 return pConv->transactions ? TRUE : FALSE;
1864 if (wCmd != EC_ENABLEALL && wCmd != EC_ENABLEONE)
1866 FIXME("Unknown command code %04x\n", wCmd);
1870 if (wCmd == EC_ENABLEALL)
1872 pConv->wStatus &= ~ST_BLOCKED;
1873 TRACE("EC_ENABLEALL: conv %p status flags %04x\n", pConv, pConv->wStatus);
1876 while (pConv->transactions)
1878 WDML_XACT *pXAct = pConv->transactions;
1880 if (pConv->wStatus & ST_CLIENT)
1882 /* transaction should be in the queue until handled */
1883 WDML_ClientHandle(pConv, pXAct, 0, NULL);
1884 WDML_UnQueueTransaction(pConv, pXAct);
1888 /* transaction should be removed from the queue before handling */
1889 WDML_UnQueueTransaction(pConv, pXAct);
1890 WDML_ServerHandle(pConv, pXAct);
1893 WDML_FreeTransaction(pConv->instance, pXAct, TRUE);
1895 if (wCmd == EC_ENABLEONE) break;
1900 /*****************************************************************
1901 * DdeEnableCallback (USER32.@)
1903 BOOL WINAPI DdeEnableCallback(DWORD idInst, HCONV hConv, UINT wCmd)
1908 TRACE("(%d, %p, %04x)\n", idInst, hConv, wCmd);
1912 pConv = WDML_GetConv(hConv, TRUE);
1914 if (pConv && pConv->instance->instanceID == idInst)
1915 ret = WDML_EnableCallback(pConv, wCmd);
1919 WDML_INSTANCE *pInstance = WDML_GetInstance(idInst);
1924 TRACE("adding flags %04x to instance %p\n", wCmd, pInstance);
1925 pInstance->wStatus |= wCmd;
1927 if (wCmd == EC_DISABLE)
1929 pInstance->wStatus |= ST_BLOCKED;
1930 TRACE("EC_DISABLE: inst %p status flags %04x\n", pInstance, pInstance->wStatus);
1932 else if (wCmd == EC_ENABLEALL)
1934 pInstance->wStatus &= ~ST_BLOCKED;
1935 TRACE("EC_ENABLEALL: inst %p status flags %04x\n", pInstance, pInstance->wStatus);
1940 for (pConv = pInstance->convs[WDML_CLIENT_SIDE]; pConv != NULL; pConv = pConv->next)
1942 ret = WDML_EnableCallback(pConv, wCmd);
1943 if (ret && wCmd == EC_QUERYWAITING) break;
1950 /******************************************************************
1955 WDML_CONV* WDML_GetConv(HCONV hConv, BOOL checkConnected)
1957 WDML_CONV* pConv = (WDML_CONV*)hConv;
1959 /* FIXME: should do better checking */
1960 if (pConv == NULL || pConv->magic != WDML_CONV_MAGIC) return NULL;
1962 if (!pConv->instance || pConv->instance->threadID != GetCurrentThreadId())
1964 WARN("wrong thread ID\n");
1965 pConv->instance->lastError = DMLERR_INVALIDPARAMETER; /* FIXME: check */
1969 if (checkConnected && !(pConv->wStatus & ST_CONNECTED))
1971 WARN("found conv but ain't connected\n");
1972 pConv->instance->lastError = DMLERR_NO_CONV_ESTABLISHED;
1979 /******************************************************************
1980 * WDML_GetConvFromWnd
1984 WDML_CONV* WDML_GetConvFromWnd(HWND hWnd)
1986 return (WDML_CONV*)GetWindowLongPtrW(hWnd, GWL_WDML_CONVERSATION);
1989 /******************************************************************
1994 BOOL WDML_PostAck(WDML_CONV* pConv, WDML_SIDE side, WORD appRetCode,
1995 BOOL fBusy, BOOL fAck, UINT_PTR pmt, LPARAM lParam, UINT oldMsg)
2000 if (side == WDML_SERVER_SIDE)
2002 from = pConv->hwndServer;
2003 to = pConv->hwndClient;
2007 to = pConv->hwndServer;
2008 from = pConv->hwndClient;
2011 ddeAck.bAppReturnCode = appRetCode;
2012 ddeAck.reserved = 0;
2013 ddeAck.fBusy = fBusy;
2016 TRACE("Posting a %s ack\n", ddeAck.fAck ? "positive" : "negative");
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))
2022 pConv->wStatus &= ~ST_CONNECTED;
2023 pConv->instance->lastError = DMLERR_POSTMSG_FAILED;
2024 FreeDDElParam(WM_DDE_ACK, lParam);
2030 /*****************************************************************
2031 * DdeSetUserHandle (USER32.@)
2033 BOOL WINAPI DdeSetUserHandle(HCONV hConv, DWORD id, DWORD hUser)
2037 pConv = WDML_GetConv(hConv, FALSE);
2043 pConv->hUser = hUser;
2049 pXAct = WDML_FindTransaction(pConv, id);
2052 pXAct->hUser = hUser;
2056 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2063 /******************************************************************
2064 * WDML_GetLocalConvInfo
2068 static BOOL WDML_GetLocalConvInfo(WDML_CONV* pConv, CONVINFO* ci, DWORD id)
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;
2080 side = (pConv->wStatus & ST_CLIENT) ? WDML_CLIENT_SIDE : WDML_SERVER_SIDE;
2082 for (pLink = pConv->instance->links[side]; pLink != NULL; pLink = pLink->next)
2084 if (pLink->hConv == (HCONV)pConv)
2086 ci->wStatus |= ST_ADVISE;
2091 /* FIXME: non handled status flags:
2097 ci->wConvst = pConv->wConvst; /* FIXME */
2099 ci->wLastError = 0; /* FIXME: note it's not the instance last error */
2101 ci->ConvCtxt = pConv->convContext;
2102 if (ci->wStatus & ST_CLIENT)
2104 ci->hwnd = pConv->hwndClient;
2105 ci->hwndPartner = pConv->hwndServer;
2109 ci->hwnd = pConv->hwndServer;
2110 ci->hwndPartner = pConv->hwndClient;
2114 ci->hUser = pConv->hUser;
2123 pXAct = WDML_FindTransaction(pConv, id);
2126 ci->hUser = pXAct->hUser;
2127 ci->hszItem = pXAct->hszItem;
2128 ci->wFmt = pXAct->wFmt;
2129 ci->wType = pXAct->wType;
2134 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2140 /******************************************************************
2141 * DdeQueryConvInfo (USER32.@)
2143 * FIXME: Set last DDE error on failure.
2145 UINT WINAPI DdeQueryConvInfo(HCONV hConv, DWORD id, PCONVINFO lpConvInfo)
2147 UINT ret = lpConvInfo->cb;
2151 TRACE("(%p,%x,%p)\n", hConv, id, lpConvInfo);
2155 FIXME("hConv is NULL\n");
2159 pConv = WDML_GetConv(hConv, FALSE);
2162 if (!WDML_GetLocalConvInfo(pConv, &ci, id))
2167 if ((ULONG_PTR)hConv & 1)
2169 pConv = WDML_GetConv((HCONV)((ULONG_PTR)hConv & ~1), FALSE);
2171 FIXME("Request on remote conversation information is not implemented yet\n");
2177 memcpy(lpConvInfo, &ci, min((size_t)lpConvInfo->cb, sizeof(ci)));
2181 /* ================================================================
2183 * Link (hot & warm) management
2185 * ================================================================ */
2187 /******************************************************************
2192 void WDML_AddLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2193 UINT wType, HSZ hszItem, UINT wFmt)
2197 pLink = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_LINK));
2204 pLink->hConv = hConv;
2205 pLink->transactionType = wType;
2206 WDML_IncHSZ(pInstance, pLink->hszItem = hszItem);
2208 pLink->next = pInstance->links[side];
2209 pInstance->links[side] = pLink;
2212 /******************************************************************
2217 void WDML_RemoveLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2218 HSZ hszItem, UINT uFmt)
2220 WDML_LINK* pPrev = NULL;
2221 WDML_LINK* pCurrent = NULL;
2223 pCurrent = pInstance->links[side];
2225 while (pCurrent != NULL)
2227 if (pCurrent->hConv == hConv &&
2228 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2229 pCurrent->uFmt == uFmt)
2231 if (pCurrent == pInstance->links[side])
2233 pInstance->links[side] = pCurrent->next;
2237 pPrev->next = pCurrent->next;
2240 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2241 HeapFree(GetProcessHeap(), 0, pCurrent);
2246 pCurrent = pCurrent->next;
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
2254 /******************************************************************
2255 * WDML_RemoveAllLinks
2259 void WDML_RemoveAllLinks(WDML_INSTANCE* pInstance, WDML_CONV* pConv, WDML_SIDE side)
2261 WDML_LINK* pPrev = NULL;
2262 WDML_LINK* pCurrent = NULL;
2263 WDML_LINK* pNext = NULL;
2265 pCurrent = pInstance->links[side];
2267 while (pCurrent != NULL)
2269 if (pCurrent->hConv == (HCONV)pConv)
2271 if (pCurrent == pInstance->links[side])
2273 pInstance->links[side] = pCurrent->next;
2274 pNext = pCurrent->next;
2278 pPrev->next = pCurrent->next;
2279 pNext = pCurrent->next;
2282 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2284 HeapFree(GetProcessHeap(), 0, pCurrent);
2291 pCurrent = pCurrent->next;
2300 /******************************************************************
2305 WDML_LINK* WDML_FindLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2306 HSZ hszItem, BOOL use_fmt, UINT uFmt)
2308 WDML_LINK* pCurrent = NULL;
2310 for (pCurrent = pInstance->links[side]; pCurrent != NULL; pCurrent = pCurrent->next)
2312 /* we don't need to check for transaction type as it can be altered */
2314 if (pCurrent->hConv == hConv &&
2315 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2316 (!use_fmt || pCurrent->uFmt == uFmt))
2326 /* ================================================================
2328 * Transaction management
2330 * ================================================================ */
2332 /******************************************************************
2333 * WDML_AllocTransaction
2335 * Alloc a transaction structure for handling the message ddeMsg
2337 WDML_XACT* WDML_AllocTransaction(WDML_INSTANCE* pInstance, UINT ddeMsg,
2338 UINT wFmt, HSZ hszItem)
2341 static WORD tid = 1; /* FIXME: wrap around */
2343 pXAct = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_XACT));
2346 pInstance->lastError = DMLERR_MEMORY_ERROR;
2350 pXAct->xActID = tid++;
2351 pXAct->ddeMsg = ddeMsg;
2352 pXAct->hDdeData = 0;
2357 if ((pXAct->hszItem = hszItem)) WDML_IncHSZ(pInstance, pXAct->hszItem);
2365 /******************************************************************
2366 * WDML_QueueTransaction
2368 * Adds a transaction to the list of transaction
2370 void WDML_QueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2374 /* advance to last in queue */
2375 for (pt = &pConv->transactions; *pt != NULL; pt = &(*pt)->next);
2379 /******************************************************************
2380 * WDML_UnQueueTransaction
2384 BOOL WDML_UnQueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2388 for (pt = &pConv->transactions; *pt; pt = &(*pt)->next)
2399 /******************************************************************
2400 * WDML_FreeTransaction
2404 void WDML_FreeTransaction(WDML_INSTANCE* pInstance, WDML_XACT* pXAct, BOOL doFreePmt)
2406 /* free pmt(s) in pXAct too. check against one for not deleting TRUE return values */
2407 if (doFreePmt && (ULONG_PTR)pXAct->hMem > 1)
2409 GlobalFree(pXAct->hMem);
2411 if (pXAct->hszItem) WDML_DecHSZ(pInstance, pXAct->hszItem);
2413 HeapFree(GetProcessHeap(), 0, pXAct);
2416 /******************************************************************
2417 * WDML_FindTransaction
2421 WDML_XACT* WDML_FindTransaction(WDML_CONV* pConv, DWORD tid)
2426 for (pXAct = pConv->transactions; pXAct; pXAct = pXAct->next)
2428 if (pXAct->xActID == tid)
2434 /* ================================================================
2436 * Information broadcast across DDEML implementations
2438 * ================================================================ */
2440 struct tagWDML_BroadcastPmt
2448 /******************************************************************
2449 * WDML_BroadcastEnumProc
2453 static BOOL CALLBACK WDML_BroadcastEnumProc(HWND hWnd, LPARAM lParam)
2455 struct tagWDML_BroadcastPmt* s = (struct tagWDML_BroadcastPmt*)lParam;
2458 if (GetClassNameW(hWnd, buffer, 128) > 0 &&
2459 lstrcmpiW(buffer, s->clsName) == 0)
2461 PostMessageW(hWnd, s->uMsg, s->wParam, s->lParam);
2466 /******************************************************************
2467 * WDML_BroadcastDDEWindows
2471 void WDML_BroadcastDDEWindows(LPCWSTR clsName, UINT uMsg, WPARAM wParam, LPARAM lParam)
2473 struct tagWDML_BroadcastPmt s;
2475 s.clsName = clsName;
2479 EnumWindows(WDML_BroadcastEnumProc, (LPARAM)&s);