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)\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 = 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 HeapFree(GetProcessHeap(), 0, pInstance); /* finished - release heap space used as work store */
519 /* can't reinitialise if we have initialised nothing !! */
520 reference_inst = WDML_InstanceList;
521 /* must first check if we have been given a valid instance to re-initialise !! how do we do that ? */
523 * MS allows initialisation without specifying a callback, should we allow addition of the
524 * callback by a later call to initialise ? - if so this lot will have to change
526 while (reference_inst->next != NULL)
528 if (*pidInst == reference_inst->instanceID && pfnCallback == reference_inst->callback)
530 /* Check 1 - cannot change client-only mode if set via APPCMD_CLIENTONLY */
532 if (reference_inst->clientOnly)
534 if ((reference_inst->CBFflags & CBF_FAIL_ALLSVRXACTIONS) != CBF_FAIL_ALLSVRXACTIONS)
536 /* i.e. Was set to Client-only and through APPCMD_CLIENTONLY */
538 if (!(afCmd & APPCMD_CLIENTONLY))
540 ret = DMLERR_INVALIDPARAMETER;
545 /* Check 2 - cannot change monitor modes */
547 if (pInstance->monitor != reference_inst->monitor)
549 ret = DMLERR_INVALIDPARAMETER;
553 /* Check 3 - trying to set Client-only via APPCMD when not set so previously */
555 if ((afCmd&APPCMD_CLIENTONLY) && !reference_inst->clientOnly)
557 ret = DMLERR_INVALIDPARAMETER;
562 reference_inst = reference_inst->next;
564 if (reference_inst->next == NULL)
566 ret = DMLERR_INVALIDPARAMETER;
569 /* All checked - change relevant flags */
571 reference_inst->CBFflags = pInstance->CBFflags;
572 reference_inst->clientOnly = pInstance->clientOnly;
573 reference_inst->monitorFlags = pInstance->monitorFlags;
574 LeaveCriticalSection(&WDML_CritSect);
577 return DMLERR_NO_ERROR;
579 HeapFree(GetProcessHeap(), 0, pInstance);
580 LeaveCriticalSection(&WDML_CritSect);
584 /******************************************************************************
585 * DdeInitializeA (USER32.@)
587 * See DdeInitializeW.
589 UINT WINAPI DdeInitializeA(LPDWORD pidInst, PFNCALLBACK pfnCallback,
590 DWORD afCmd, DWORD ulRes)
592 return WDML_Initialize(pidInst, pfnCallback, afCmd, ulRes, FALSE, FALSE);
595 /******************************************************************************
596 * DdeInitializeW [USER32.@]
597 * Registers an application with the DDEML
600 * pidInst [I] Pointer to instance identifier
601 * pfnCallback [I] Pointer to callback function
602 * afCmd [I] Set of command and filter flags
606 * Success: DMLERR_NO_ERROR
607 * Failure: DMLERR_DLL_USAGE, DMLERR_INVALIDPARAMETER, DMLERR_SYS_ERROR
609 UINT WINAPI DdeInitializeW(LPDWORD pidInst, PFNCALLBACK pfnCallback,
610 DWORD afCmd, DWORD ulRes)
612 return WDML_Initialize(pidInst, pfnCallback, afCmd, ulRes, TRUE, FALSE);
615 /*****************************************************************
616 * DdeUninitialize [USER32.@] Frees DDEML resources
619 * idInst [I] Instance identifier
626 BOOL WINAPI DdeUninitialize(DWORD idInst)
628 /* Stage one - check if we have a handle for this instance
630 WDML_INSTANCE* pInstance;
632 WDML_CONV* pConvNext;
634 TRACE("(%d)\n", idInst);
636 /* First check instance
638 pInstance = WDML_GetInstance(idInst);
639 if (pInstance == NULL)
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 /* release the heap entry
685 HeapFree(GetProcessHeap(), 0, pInstance);
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 LeaveCriticalSection(&WDML_CritSect);
708 DdeUninitialize(pInstance->instanceID);
709 EnterCriticalSection(&WDML_CritSect);
712 LeaveCriticalSection(&WDML_CritSect);
715 /******************************************************************
716 * WDML_InvokeCallback
720 HDDEDATA WDML_InvokeCallback(WDML_INSTANCE* pInstance, UINT uType, UINT uFmt, HCONV hConv,
721 HSZ hsz1, HSZ hsz2, HDDEDATA hdata,
722 ULONG_PTR dwData1, ULONG_PTR dwData2)
726 if (pInstance == NULL)
729 TRACE("invoking CB%d[%p] (%x %x %p %p %p %p %lx %lx)\n",
730 pInstance->win16 ? 16 : 32, pInstance->callback, uType, uFmt,
731 hConv, hsz1, hsz2, hdata, dwData1, dwData2);
732 if (pInstance->win16)
734 ret = WDML_InvokeCallback16(pInstance->callback, uType, uFmt, hConv,
735 hsz1, hsz2, hdata, dwData1, dwData2);
739 ret = pInstance->callback(uType, uFmt, hConv, hsz1, hsz2, hdata, dwData1, dwData2);
741 TRACE("done => %p\n", ret);
745 /*****************************************************************************
748 * generic routine to return a pointer to the relevant DDE_HANDLE_ENTRY
749 * for an instance Id, or NULL if the entry does not exist
752 WDML_INSTANCE* WDML_GetInstance(DWORD instId)
754 WDML_INSTANCE* pInstance;
756 EnterCriticalSection(&WDML_CritSect);
758 for (pInstance = WDML_InstanceList; pInstance != NULL; pInstance = pInstance->next)
760 if (pInstance->instanceID == instId)
762 if (GetCurrentThreadId() != pInstance->threadID)
764 FIXME("Tried to get instance from wrong thread\n");
771 LeaveCriticalSection(&WDML_CritSect);
774 WARN("Instance entry missing for id %04x\n", instId);
778 /******************************************************************
779 * WDML_GetInstanceFromWnd
783 WDML_INSTANCE* WDML_GetInstanceFromWnd(HWND hWnd)
785 return (WDML_INSTANCE*)GetWindowLongPtrW(hWnd, GWL_WDML_INSTANCE);
788 /******************************************************************************
789 * DdeGetLastError [USER32.@] Gets most recent error code
792 * idInst [I] Instance identifier
797 UINT WINAPI DdeGetLastError(DWORD idInst)
800 WDML_INSTANCE* pInstance;
802 /* First check instance
804 pInstance = WDML_GetInstance(idInst);
805 if (pInstance == NULL)
807 error_code = DMLERR_INVALIDPARAMETER;
811 error_code = pInstance->lastError;
812 pInstance->lastError = 0;
818 /* ================================================================
822 * ================================================================ */
825 /******************************************************************
830 static HSZNode* WDML_FindNode(WDML_INSTANCE* pInstance, HSZ hsz)
834 if (pInstance == NULL) return NULL;
836 for (pNode = pInstance->nodeList; pNode != NULL; pNode = pNode->next)
838 if (pNode->hsz == hsz) break;
840 if (!pNode) WARN("HSZ %p not found\n", hsz);
844 /******************************************************************
845 * WDML_MakeAtomFromHsz
847 * Creates a global atom from an existing HSZ
848 * Generally used before sending an HSZ as an atom to a remote app
850 ATOM WDML_MakeAtomFromHsz(HSZ hsz)
852 WCHAR nameBuffer[MAX_BUFFER_LEN];
854 if (GetAtomNameW(HSZ2ATOM(hsz), nameBuffer, MAX_BUFFER_LEN))
855 return GlobalAddAtomW(nameBuffer);
856 WARN("HSZ %p not found\n", hsz);
860 /******************************************************************
861 * WDML_MakeHszFromAtom
863 * Creates a HSZ from an existing global atom
864 * Generally used while receiving a global atom and transforming it
867 HSZ WDML_MakeHszFromAtom(const WDML_INSTANCE* pInstance, ATOM atom)
869 WCHAR nameBuffer[MAX_BUFFER_LEN];
871 if (!atom) return NULL;
873 if (GlobalGetAtomNameW(atom, nameBuffer, MAX_BUFFER_LEN))
875 TRACE("%x => %s\n", atom, debugstr_w(nameBuffer));
876 return DdeCreateStringHandleW(pInstance->instanceID, nameBuffer, CP_WINUNICODE);
878 WARN("ATOM 0x%x not found\n", atom);
882 /******************************************************************
887 BOOL WDML_IncHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
891 pNode = WDML_FindNode(pInstance, hsz);
892 if (!pNode) return FALSE;
898 /******************************************************************************
899 * WDML_DecHSZ (INTERNAL)
901 * Decrease the ref count of an HSZ. If it reaches 0, the node is removed from the list
903 * Returns -1 is the HSZ isn't found, otherwise it's the current (after --) of the ref count
905 BOOL WDML_DecHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
907 HSZNode* pPrev = NULL;
910 for (pCurrent = pInstance->nodeList; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
912 /* If we found the node we were looking for and its ref count is one,
915 if (pCurrent->hsz == hsz)
917 if (--pCurrent->refCount == 0)
919 if (pCurrent == pInstance->nodeList)
921 pInstance->nodeList = pCurrent->next;
925 pPrev->next = pCurrent->next;
927 HeapFree(GetProcessHeap(), 0, pCurrent);
928 DeleteAtom(HSZ2ATOM(hsz));
933 WARN("HSZ %p not found\n", hsz);
938 /******************************************************************************
939 * WDML_FreeAllHSZ (INTERNAL)
941 * Frees up all the strings still allocated in the list and
942 * remove all the nodes from the list of HSZ nodes.
944 void WDML_FreeAllHSZ(WDML_INSTANCE* pInstance)
946 /* Free any strings created in this instance.
948 while (pInstance->nodeList != NULL)
950 DdeFreeStringHandle(pInstance->instanceID, pInstance->nodeList->hsz);
954 /******************************************************************************
955 * InsertHSZNode (INTERNAL)
957 * Insert a node to the head of the list.
959 static void WDML_InsertHSZNode(WDML_INSTANCE* pInstance, HSZ hsz)
963 HSZNode* pNew = NULL;
964 /* Create a new node for this HSZ.
966 pNew = HeapAlloc(GetProcessHeap(), 0, sizeof(HSZNode));
970 pNew->next = pInstance->nodeList;
972 pInstance->nodeList = pNew;
976 ERR("Primary HSZ Node allocation failed - out of memory\n");
981 /******************************************************************
986 static int WDML_QueryString(WDML_INSTANCE* pInstance, HSZ hsz, LPVOID ptr, DWORD cchMax,
989 WCHAR pString[MAX_BUFFER_LEN];
991 /* If psz is null, we have to return only the length
997 cchMax = MAX_BUFFER_LEN;
1003 ret = GetAtomNameA(HSZ2ATOM(hsz), ptr, cchMax);
1006 ret = GetAtomNameW(HSZ2ATOM(hsz), ptr, cchMax);
1009 ERR("Unknown code page %d\n", codepage);
1015 /*****************************************************************
1016 * DdeQueryStringA [USER32.@]
1018 DWORD WINAPI DdeQueryStringA(DWORD idInst, HSZ hsz, LPSTR psz, DWORD cchMax, INT iCodePage)
1021 WDML_INSTANCE* pInstance;
1023 TRACE("(%d, %p, %p, %d, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1025 /* First check instance
1027 pInstance = WDML_GetInstance(idInst);
1028 if (pInstance != NULL)
1030 if (iCodePage == 0) iCodePage = CP_WINANSI;
1031 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1034 TRACE("returning %d (%s)\n", ret, debugstr_a(psz));
1038 /*****************************************************************
1039 * DdeQueryStringW [USER32.@]
1042 DWORD WINAPI DdeQueryStringW(DWORD idInst, HSZ hsz, LPWSTR psz, DWORD cchMax, INT iCodePage)
1045 WDML_INSTANCE* pInstance;
1047 TRACE("(%d, %p, %p, %d, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1049 /* First check instance
1051 pInstance = WDML_GetInstance(idInst);
1052 if (pInstance != NULL)
1054 if (iCodePage == 0) iCodePage = CP_WINUNICODE;
1055 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1058 TRACE("returning %d (%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.@]
1092 * See DdeCreateStringHandleW.
1094 HSZ WINAPI DdeCreateStringHandleA(DWORD idInst, LPCSTR psz, INT codepage)
1097 WDML_INSTANCE* pInstance;
1099 TRACE("(%d,%s,%d)\n", idInst, debugstr_a(psz), codepage);
1101 pInstance = WDML_GetInstance(idInst);
1104 if (codepage == 0) codepage = CP_WINANSI;
1105 hsz = WDML_CreateString(pInstance, psz, codepage);
1112 /******************************************************************************
1113 * DdeCreateStringHandleW [USER32.@] Creates handle to identify string
1116 * idInst [I] Instance identifier
1117 * psz [I] Pointer to string
1118 * codepage [I] Code page identifier
1120 * Success: String handle
1123 HSZ WINAPI DdeCreateStringHandleW(DWORD idInst, LPCWSTR psz, INT codepage)
1125 WDML_INSTANCE* pInstance;
1128 pInstance = WDML_GetInstance(idInst);
1131 if (codepage == 0) codepage = CP_WINUNICODE;
1132 hsz = WDML_CreateString(pInstance, psz, codepage);
1138 /*****************************************************************
1139 * DdeFreeStringHandle (USER32.@)
1144 BOOL WINAPI DdeFreeStringHandle(DWORD idInst, HSZ hsz)
1146 WDML_INSTANCE* pInstance;
1149 TRACE("(%d,%p):\n", idInst, hsz);
1151 /* First check instance
1153 pInstance = WDML_GetInstance(idInst);
1155 ret = WDML_DecHSZ(pInstance, hsz);
1160 /*****************************************************************
1161 * DdeKeepStringHandle (USER32.@)
1167 BOOL WINAPI DdeKeepStringHandle(DWORD idInst, HSZ hsz)
1169 WDML_INSTANCE* pInstance;
1172 TRACE("(%d,%p):\n", idInst, hsz);
1174 /* First check instance
1176 pInstance = WDML_GetInstance(idInst);
1178 ret = WDML_IncHSZ(pInstance, hsz);
1183 /*****************************************************************
1184 * DdeCmpStringHandles (USER32.@)
1186 * Compares the value of two string handles. This comparison is
1187 * not case sensitive.
1190 * hsz1 [I] Handle to the first string
1191 * hsz2 [I] Handle to the second string
1194 * -1 The value of hsz1 is zero or less than hsz2
1195 * 0 The values of hsz 1 and 2 are the same or both zero.
1196 * 1 The value of hsz2 is zero of less than hsz1
1198 INT WINAPI DdeCmpStringHandles(HSZ hsz1, HSZ hsz2)
1200 WCHAR psz1[MAX_BUFFER_LEN];
1201 WCHAR psz2[MAX_BUFFER_LEN];
1205 ret1 = GetAtomNameW(HSZ2ATOM(hsz1), psz1, MAX_BUFFER_LEN);
1206 ret2 = GetAtomNameW(HSZ2ATOM(hsz2), psz2, MAX_BUFFER_LEN);
1208 TRACE("(%p<%s> %p<%s>);\n", hsz1, debugstr_w(psz1), hsz2, debugstr_w(psz2));
1210 /* Make sure we found both strings. */
1211 if (ret1 == 0 && ret2 == 0)
1213 /* If both are not found, return both "zero strings". */
1218 /* If hsz1 is a not found, return hsz1 is "zero string". */
1223 /* If hsz2 is a not found, return hsz2 is "zero string". */
1228 /* Compare the two strings we got (case insensitive). */
1229 ret = lstrcmpiW(psz1, psz2);
1230 /* Since strcmp returns any number smaller than
1231 * 0 when the first string is found to be less than
1232 * the second one we must make sure we are returning
1233 * the proper values.
1248 /* ================================================================
1250 * Data handle management
1252 * ================================================================ */
1254 /*****************************************************************
1255 * DdeCreateDataHandle (USER32.@)
1257 HDDEDATA WINAPI DdeCreateDataHandle(DWORD idInst, LPBYTE pSrc, DWORD cb, DWORD cbOff,
1258 HSZ hszItem, UINT wFmt, UINT afCmd)
1260 /* For now, we ignore idInst, hszItem.
1261 * The purpose of these arguments still need to be investigated.
1266 DDE_DATAHANDLE_HEAD* pDdh;
1267 WCHAR psz[MAX_BUFFER_LEN];
1269 if (!GetAtomNameW(HSZ2ATOM(hszItem), psz, MAX_BUFFER_LEN))
1271 psz[0] = HSZ2ATOM(hszItem);
1275 TRACE("(%d,%p,cb %d, cbOff %d,%p <%s>,fmt %04x,%x)\n",
1276 idInst, pSrc, cb, cbOff, hszItem, debugstr_w(psz), wFmt, afCmd);
1278 if (afCmd != 0 && afCmd != HDATA_APPOWNED)
1281 /* we use the first 4 bytes to store the size */
1282 if (!(hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, cb + cbOff + sizeof(DDE_DATAHANDLE_HEAD))))
1284 ERR("GlobalAlloc failed\n");
1288 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock(hMem);
1295 pDdh->cfFormat = wFmt;
1296 pDdh->bAppOwned = (afCmd == HDATA_APPOWNED);
1298 pByte = (LPBYTE)(pDdh + 1);
1301 memcpy(pByte, pSrc + cbOff, cb);
1305 TRACE("=> %p\n", hMem);
1306 return (HDDEDATA)hMem;
1309 /*****************************************************************
1311 * DdeAddData (USER32.@)
1313 HDDEDATA WINAPI DdeAddData(HDDEDATA hData, LPBYTE pSrc, DWORD cb, DWORD cbOff)
1315 DWORD old_sz, new_sz;
1318 TRACE("(%p,%p,cb %d, cbOff %d)\n", hData, pSrc, cb, cbOff);
1320 pDst = DdeAccessData(hData, &old_sz);
1321 if (!pDst) return 0;
1323 new_sz = cb + cbOff;
1324 if (new_sz > old_sz)
1326 DdeUnaccessData(hData);
1327 hData = GlobalReAlloc(hData, new_sz + sizeof(DDE_DATAHANDLE_HEAD),
1328 GMEM_MOVEABLE | GMEM_DDESHARE);
1329 pDst = DdeAccessData(hData, &old_sz);
1332 if (!pDst) return 0;
1334 memcpy(pDst + cbOff, pSrc, cb);
1335 DdeUnaccessData(hData);
1339 /******************************************************************************
1340 * DdeGetData [USER32.@] Copies data from DDE object to local buffer
1344 * hData [I] Handle to DDE object
1345 * pDst [I] Pointer to destination buffer
1346 * cbMax [I] Amount of data to copy
1347 * cbOff [I] Offset to beginning of data
1350 * Size of memory object associated with handle
1352 DWORD WINAPI DdeGetData(HDDEDATA hData, LPBYTE pDst, DWORD cbMax, DWORD cbOff)
1354 DWORD dwSize, dwRet;
1357 TRACE("(%p,%p,%d,%d)\n", hData, pDst, cbMax, cbOff);
1359 pByte = DdeAccessData(hData, &dwSize);
1367 else if (cbOff + cbMax < dwSize)
1371 else if (cbOff < dwSize)
1373 dwRet = dwSize - cbOff;
1379 if (pDst && dwRet != 0)
1381 memcpy(pDst, pByte + cbOff, dwRet);
1383 DdeUnaccessData(hData);
1392 /*****************************************************************
1393 * DdeAccessData (USER32.@)
1395 LPBYTE WINAPI DdeAccessData(HDDEDATA hData, LPDWORD pcbDataSize)
1397 HGLOBAL hMem = hData;
1398 DDE_DATAHANDLE_HEAD* pDdh;
1400 TRACE("(%p,%p)\n", hData, pcbDataSize);
1402 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock(hMem);
1405 ERR("Failed on GlobalLock(%p)\n", hMem);
1409 if (pcbDataSize != NULL)
1411 *pcbDataSize = GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD);
1413 TRACE("=> %p (%lu) fmt %04x\n", pDdh + 1, GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD), pDdh->cfFormat);
1414 return (LPBYTE)(pDdh + 1);
1417 /*****************************************************************
1418 * DdeUnaccessData (USER32.@)
1420 BOOL WINAPI DdeUnaccessData(HDDEDATA hData)
1422 HGLOBAL hMem = hData;
1424 TRACE("(%p)\n", hData);
1431 /*****************************************************************
1432 * DdeFreeDataHandle (USER32.@)
1434 BOOL WINAPI DdeFreeDataHandle(HDDEDATA hData)
1436 TRACE("(%p)\n", hData);
1437 return GlobalFree(hData) == 0;
1440 /******************************************************************
1445 BOOL WDML_IsAppOwned(HDDEDATA hData)
1447 DDE_DATAHANDLE_HEAD* pDdh;
1450 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock(hData);
1453 ret = pDdh->bAppOwned;
1454 GlobalUnlock(hData);
1459 /* ================================================================
1461 * Global <=> Data handle management
1463 * ================================================================ */
1465 /* Note: we use a DDEDATA, but layout of DDEDATA, DDEADVISE and DDEPOKE structures is similar:
1467 * (bytes) (bits) comment
1468 * 0 16 bit fields for options (release, ackreq, response...)
1469 * 2 16 clipboard format
1470 * 4 ? data to be used
1472 HDDEDATA WDML_Global2DataHandle(HGLOBAL hMem, WINE_DDEHEAD* p)
1480 pDd = GlobalLock(hMem);
1481 size = GlobalSize(hMem) - sizeof(WINE_DDEHEAD);
1484 if (p) memcpy(p, pDd, sizeof(WINE_DDEHEAD));
1485 switch (pDd->cfFormat)
1488 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1489 pDd->cfFormat, hMem);
1493 ret = DdeCreateDataHandle(0, pDd->Value, size, 0, 0, pDd->cfFormat, 0);
1496 if (size >= sizeof(BITMAP))
1498 BITMAP* bmp = (BITMAP*)pDd->Value;
1499 int count = bmp->bmWidthBytes * bmp->bmHeight * bmp->bmPlanes;
1500 if (size >= sizeof(BITMAP) + count)
1504 if ((hbmp = CreateBitmap(bmp->bmWidth, bmp->bmHeight,
1505 bmp->bmPlanes, bmp->bmBitsPixel,
1506 pDd->Value + sizeof(BITMAP))))
1508 ret = DdeCreateDataHandle(0, (LPBYTE)&hbmp, sizeof(hbmp),
1509 0, 0, CF_BITMAP, 0);
1511 else ERR("Can't create bmp\n");
1515 ERR("Wrong count: %u / %d\n", size, count);
1517 } else ERR("No bitmap header\n");
1526 /******************************************************************
1527 * WDML_DataHandle2Global
1531 HGLOBAL WDML_DataHandle2Global(HDDEDATA hDdeData, BOOL fResponse, BOOL fRelease,
1532 BOOL fDeferUpd, BOOL fAckReq)
1534 DDE_DATAHANDLE_HEAD* pDdh;
1538 dwSize = GlobalSize((HGLOBAL)hDdeData) - sizeof(DDE_DATAHANDLE_HEAD);
1539 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock((HGLOBAL)hDdeData);
1542 WINE_DDEHEAD* wdh = NULL;
1544 switch (pDdh->cfFormat)
1547 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1548 pDdh->cfFormat, hDdeData);
1552 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, sizeof(WINE_DDEHEAD) + dwSize);
1553 if (hMem && (wdh = GlobalLock(hMem)))
1555 memcpy(wdh + 1, pDdh + 1, dwSize);
1559 if (dwSize >= sizeof(HBITMAP))
1563 HBITMAP hbmp = *(HBITMAP*)(pDdh + 1);
1565 if (GetObjectW(hbmp, sizeof(bmp), &bmp))
1567 count = bmp.bmWidthBytes * bmp.bmHeight;
1568 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE,
1569 sizeof(WINE_DDEHEAD) + sizeof(bmp) + count);
1570 if (hMem && (wdh = GlobalLock(hMem)))
1572 memcpy(wdh + 1, &bmp, sizeof(bmp));
1573 GetBitmapBits(hbmp, count, ((char*)(wdh + 1)) + sizeof(bmp));
1582 wdh->fResponse = fResponse;
1583 wdh->fRelease = fRelease;
1584 wdh->fDeferUpd = fDeferUpd;
1585 wdh->fAckReq = fAckReq;
1586 wdh->cfFormat = pDdh->cfFormat;
1589 GlobalUnlock((HGLOBAL)hDdeData);
1595 /* ================================================================
1599 * ================================================================ */
1601 /******************************************************************
1606 WDML_SERVER* WDML_AddServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1608 static const WCHAR fmtW[] = {'%','s','(','0','x','%','0','8','l','x',')',0};
1609 WDML_SERVER* pServer;
1613 pServer = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_SERVER));
1614 if (pServer == NULL) return NULL;
1616 pServer->hszService = hszService;
1617 WDML_IncHSZ(pInstance, hszService);
1619 DdeQueryStringW(pInstance->instanceID, hszService, buf1, 256, CP_WINUNICODE);
1620 snprintfW(buf2, 256, fmtW, buf1, GetCurrentProcessId());
1621 pServer->hszServiceSpec = DdeCreateStringHandleW(pInstance->instanceID, buf2, CP_WINUNICODE);
1623 pServer->atomService = WDML_MakeAtomFromHsz(pServer->hszService);
1624 pServer->atomServiceSpec = WDML_MakeAtomFromHsz(pServer->hszServiceSpec);
1626 pServer->filterOn = TRUE;
1628 pServer->next = pInstance->servers;
1629 pInstance->servers = pServer;
1633 /******************************************************************
1638 void WDML_RemoveServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1640 WDML_SERVER* pPrev = NULL;
1641 WDML_SERVER* pServer = NULL;
1643 WDML_CONV* pConvNext;
1645 pServer = pInstance->servers;
1647 while (pServer != NULL)
1649 if (DdeCmpStringHandles(pServer->hszService, hszService) == 0)
1651 WDML_BroadcastDDEWindows(WDML_szEventClass, WM_WDML_UNREGISTER,
1652 pServer->atomService, pServer->atomServiceSpec);
1653 /* terminate all conversations for given topic */
1654 for (pConv = pInstance->convs[WDML_SERVER_SIDE]; pConv != NULL; pConv = pConvNext)
1656 pConvNext = pConv->next;
1657 if (DdeCmpStringHandles(pConv->hszService, hszService) == 0)
1659 WDML_RemoveConv(pConv, WDML_SERVER_SIDE);
1660 /* don't care about return code (whether client window is present or not) */
1661 PostMessageW(pConv->hwndClient, WM_DDE_TERMINATE, (WPARAM)pConv->hwndServer, 0);
1664 if (pServer == pInstance->servers)
1666 pInstance->servers = pServer->next;
1670 pPrev->next = pServer->next;
1673 DestroyWindow(pServer->hwndServer);
1674 WDML_DecHSZ(pInstance, pServer->hszServiceSpec);
1675 WDML_DecHSZ(pInstance, pServer->hszService);
1677 GlobalDeleteAtom(pServer->atomService);
1678 GlobalDeleteAtom(pServer->atomServiceSpec);
1680 HeapFree(GetProcessHeap(), 0, pServer);
1685 pServer = pServer->next;
1689 /*****************************************************************************
1692 * generic routine to return a pointer to the relevant ServiceNode
1693 * for a given service name, or NULL if the entry does not exist
1696 WDML_SERVER* WDML_FindServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1698 WDML_SERVER* pServer;
1700 for (pServer = pInstance->servers; pServer != NULL; pServer = pServer->next)
1702 if (hszService == pServer->hszService)
1707 TRACE("Service name missing\n");
1711 /* ================================================================
1713 * Conversation management
1715 * ================================================================ */
1717 /******************************************************************
1722 WDML_CONV* WDML_AddConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1723 HSZ hszService, HSZ hszTopic, HWND hwndClient, HWND hwndServer)
1727 /* no conversation yet, add it */
1728 pConv = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_CONV));
1729 if (!pConv) return NULL;
1731 pConv->instance = pInstance;
1732 WDML_IncHSZ(pInstance, pConv->hszService = hszService);
1733 WDML_IncHSZ(pInstance, pConv->hszTopic = hszTopic);
1734 pConv->magic = WDML_CONV_MAGIC;
1735 pConv->hwndServer = hwndServer;
1736 pConv->hwndClient = hwndClient;
1737 pConv->transactions = NULL;
1739 pConv->wStatus = (side == WDML_CLIENT_SIDE) ? ST_CLIENT : 0L;
1740 pConv->wStatus |= pInstance->wStatus;
1741 /* check if both side of the conversation are of the same instance */
1742 if (GetWindowThreadProcessId(hwndClient, NULL) == GetWindowThreadProcessId(hwndServer, NULL) &&
1743 WDML_GetInstanceFromWnd(hwndClient) == WDML_GetInstanceFromWnd(hwndServer))
1745 pConv->wStatus |= ST_ISSELF;
1747 pConv->wConvst = XST_NULL;
1749 pConv->next = pInstance->convs[side];
1750 pInstance->convs[side] = pConv;
1752 TRACE("pConv->wStatus %04x\n", pConv->wStatus);
1757 /******************************************************************
1762 WDML_CONV* WDML_FindConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1763 HSZ hszService, HSZ hszTopic)
1765 WDML_CONV* pCurrent = NULL;
1767 for (pCurrent = pInstance->convs[side]; pCurrent != NULL; pCurrent = pCurrent->next)
1769 if (DdeCmpStringHandles(pCurrent->hszService, hszService) == 0 &&
1770 DdeCmpStringHandles(pCurrent->hszTopic, hszTopic) == 0)
1779 /******************************************************************
1784 void WDML_RemoveConv(WDML_CONV* pRef, WDML_SIDE side)
1786 WDML_CONV* pPrev = NULL;
1787 WDML_CONV* pCurrent;
1789 WDML_XACT* pXActNext;
1795 /* remove any pending transaction */
1796 for (pXAct = pRef->transactions; pXAct != NULL; pXAct = pXActNext)
1798 pXActNext = pXAct->next;
1799 WDML_FreeTransaction(pRef->instance, pXAct, TRUE);
1802 WDML_RemoveAllLinks(pRef->instance, pRef, side);
1804 /* FIXME: should we keep the window around ? it seems so (at least on client side
1805 * to let QueryConvInfo work after conv termination, but also to implement
1808 /* destroy conversation window, but first remove pConv from hWnd.
1809 * this would help the wndProc do appropriate handling upon a WM_DESTROY message
1811 hWnd = (side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer;
1812 SetWindowLongPtrW(hWnd, GWL_WDML_CONVERSATION, 0);
1814 DestroyWindow((side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer);
1816 WDML_DecHSZ(pRef->instance, pRef->hszService);
1817 WDML_DecHSZ(pRef->instance, pRef->hszTopic);
1819 for (pCurrent = pRef->instance->convs[side]; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
1821 if (pCurrent == pRef)
1823 if (pCurrent == pRef->instance->convs[side])
1825 pRef->instance->convs[side] = pCurrent->next;
1829 pPrev->next = pCurrent->next;
1831 pCurrent->magic = 0;
1832 HeapFree(GetProcessHeap(), 0, pCurrent);
1838 /******************************************************************
1839 * WDML_EnableCallback
1841 static BOOL WDML_EnableCallback(WDML_CONV *pConv, UINT wCmd)
1843 if (wCmd == EC_DISABLE)
1845 pConv->wStatus |= ST_BLOCKED;
1846 TRACE("EC_DISABLE: conv %p status flags %04x\n", pConv, pConv->wStatus);
1850 if (wCmd == EC_QUERYWAITING)
1851 return pConv->transactions ? TRUE : FALSE;
1853 if (wCmd != EC_ENABLEALL && wCmd != EC_ENABLEONE)
1855 FIXME("Unknown command code %04x\n", wCmd);
1859 if (wCmd == EC_ENABLEALL)
1861 pConv->wStatus &= ~ST_BLOCKED;
1862 TRACE("EC_ENABLEALL: conv %p status flags %04x\n", pConv, pConv->wStatus);
1865 while (pConv->transactions)
1867 WDML_XACT *pXAct = pConv->transactions;
1869 if (pConv->wStatus & ST_CLIENT)
1871 /* transaction should be in the queue until handled */
1872 WDML_ClientHandle(pConv, pXAct, 0, NULL);
1873 WDML_UnQueueTransaction(pConv, pXAct);
1877 /* transaction should be removed from the queue before handling */
1878 WDML_UnQueueTransaction(pConv, pXAct);
1879 WDML_ServerHandle(pConv, pXAct);
1882 WDML_FreeTransaction(pConv->instance, pXAct, TRUE);
1884 if (wCmd == EC_ENABLEONE) break;
1889 /*****************************************************************
1890 * DdeEnableCallback (USER32.@)
1892 BOOL WINAPI DdeEnableCallback(DWORD idInst, HCONV hConv, UINT wCmd)
1897 TRACE("(%d, %p, %04x)\n", idInst, hConv, wCmd);
1901 pConv = WDML_GetConv(hConv, TRUE);
1903 if (pConv && pConv->instance->instanceID == idInst)
1904 ret = WDML_EnableCallback(pConv, wCmd);
1908 WDML_INSTANCE *pInstance = WDML_GetInstance(idInst);
1913 TRACE("adding flags %04x to instance %p\n", wCmd, pInstance);
1914 pInstance->wStatus |= wCmd;
1916 if (wCmd == EC_DISABLE)
1918 pInstance->wStatus |= ST_BLOCKED;
1919 TRACE("EC_DISABLE: inst %p status flags %04x\n", pInstance, pInstance->wStatus);
1921 else if (wCmd == EC_ENABLEALL)
1923 pInstance->wStatus &= ~ST_BLOCKED;
1924 TRACE("EC_ENABLEALL: inst %p status flags %04x\n", pInstance, pInstance->wStatus);
1929 for (pConv = pInstance->convs[WDML_CLIENT_SIDE]; pConv != NULL; pConv = pConv->next)
1931 ret = WDML_EnableCallback(pConv, wCmd);
1932 if (ret && wCmd == EC_QUERYWAITING) break;
1939 /******************************************************************
1944 WDML_CONV* WDML_GetConv(HCONV hConv, BOOL checkConnected)
1946 WDML_CONV* pConv = (WDML_CONV*)hConv;
1948 /* FIXME: should do better checking */
1949 if (pConv == NULL || pConv->magic != WDML_CONV_MAGIC) return NULL;
1951 if (!pConv->instance || pConv->instance->threadID != GetCurrentThreadId())
1953 WARN("wrong thread ID\n");
1954 pConv->instance->lastError = DMLERR_INVALIDPARAMETER; /* FIXME: check */
1958 if (checkConnected && !(pConv->wStatus & ST_CONNECTED))
1960 WARN("found conv but ain't connected\n");
1961 pConv->instance->lastError = DMLERR_NO_CONV_ESTABLISHED;
1968 /******************************************************************
1969 * WDML_GetConvFromWnd
1973 WDML_CONV* WDML_GetConvFromWnd(HWND hWnd)
1975 return (WDML_CONV*)GetWindowLongPtrW(hWnd, GWL_WDML_CONVERSATION);
1978 /******************************************************************
1983 BOOL WDML_PostAck(WDML_CONV* pConv, WDML_SIDE side, WORD appRetCode,
1984 BOOL fBusy, BOOL fAck, UINT_PTR pmt, LPARAM lParam, UINT oldMsg)
1989 if (side == WDML_SERVER_SIDE)
1991 from = pConv->hwndServer;
1992 to = pConv->hwndClient;
1996 to = pConv->hwndServer;
1997 from = pConv->hwndClient;
2000 ddeAck.bAppReturnCode = appRetCode;
2001 ddeAck.reserved = 0;
2002 ddeAck.fBusy = fBusy;
2005 TRACE("Posting a %s ack\n", ddeAck.fAck ? "positive" : "negative");
2007 lParam = (lParam) ? ReuseDDElParam(lParam, oldMsg, WM_DDE_ACK, *(WORD*)&ddeAck, pmt) :
2008 PackDDElParam(WM_DDE_ACK, *(WORD*)&ddeAck, pmt);
2009 if (!PostMessageW(to, WM_DDE_ACK, (WPARAM)from, lParam))
2011 pConv->wStatus &= ~ST_CONNECTED;
2012 pConv->instance->lastError = DMLERR_POSTMSG_FAILED;
2013 FreeDDElParam(WM_DDE_ACK, lParam);
2019 /*****************************************************************
2020 * DdeSetUserHandle (USER32.@)
2022 BOOL WINAPI DdeSetUserHandle(HCONV hConv, DWORD id, DWORD hUser)
2026 pConv = WDML_GetConv(hConv, FALSE);
2032 pConv->hUser = hUser;
2038 pXAct = WDML_FindTransaction(pConv, id);
2041 pXAct->hUser = hUser;
2045 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2052 /******************************************************************
2053 * WDML_GetLocalConvInfo
2057 static BOOL WDML_GetLocalConvInfo(WDML_CONV* pConv, CONVINFO* ci, DWORD id)
2063 ci->hConvPartner = (pConv->wStatus & ST_ISLOCAL) ? (HCONV)((ULONG_PTR)pConv | 1) : 0;
2064 ci->hszSvcPartner = pConv->hszService;
2065 ci->hszServiceReq = pConv->hszService; /* FIXME: they shouldn't be the same, should they ? */
2066 ci->hszTopic = pConv->hszTopic;
2067 ci->wStatus = pConv->wStatus;
2069 side = (pConv->wStatus & ST_CLIENT) ? WDML_CLIENT_SIDE : WDML_SERVER_SIDE;
2071 for (pLink = pConv->instance->links[side]; pLink != NULL; pLink = pLink->next)
2073 if (pLink->hConv == (HCONV)pConv)
2075 ci->wStatus |= ST_ADVISE;
2080 /* FIXME: non handled status flags:
2086 ci->wConvst = pConv->wConvst; /* FIXME */
2088 ci->wLastError = 0; /* FIXME: note it's not the instance last error */
2090 ci->ConvCtxt = pConv->convContext;
2091 if (ci->wStatus & ST_CLIENT)
2093 ci->hwnd = pConv->hwndClient;
2094 ci->hwndPartner = pConv->hwndServer;
2098 ci->hwnd = pConv->hwndServer;
2099 ci->hwndPartner = pConv->hwndClient;
2103 ci->hUser = pConv->hUser;
2112 pXAct = WDML_FindTransaction(pConv, id);
2115 ci->hUser = pXAct->hUser;
2116 ci->hszItem = pXAct->hszItem;
2117 ci->wFmt = pXAct->wFmt;
2118 ci->wType = pXAct->wType;
2123 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2129 /******************************************************************
2130 * DdeQueryConvInfo (USER32.@)
2132 * FIXME: Set last DDE error on failure.
2134 UINT WINAPI DdeQueryConvInfo(HCONV hConv, DWORD id, PCONVINFO lpConvInfo)
2136 UINT ret = lpConvInfo->cb;
2140 TRACE("(%p,%x,%p)\n", hConv, id, lpConvInfo);
2144 FIXME("hConv is NULL\n");
2148 pConv = WDML_GetConv(hConv, FALSE);
2151 if (!WDML_GetLocalConvInfo(pConv, &ci, id))
2156 if ((ULONG_PTR)hConv & 1)
2158 pConv = WDML_GetConv((HCONV)((ULONG_PTR)hConv & ~1), FALSE);
2160 FIXME("Request on remote conversation information is not implemented yet\n");
2166 memcpy(lpConvInfo, &ci, min((size_t)lpConvInfo->cb, sizeof(ci)));
2170 /* ================================================================
2172 * Link (hot & warm) management
2174 * ================================================================ */
2176 /******************************************************************
2181 void WDML_AddLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2182 UINT wType, HSZ hszItem, UINT wFmt)
2186 pLink = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_LINK));
2193 pLink->hConv = hConv;
2194 pLink->transactionType = wType;
2195 WDML_IncHSZ(pInstance, pLink->hszItem = hszItem);
2197 pLink->next = pInstance->links[side];
2198 pInstance->links[side] = pLink;
2201 /******************************************************************
2206 void WDML_RemoveLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2207 HSZ hszItem, UINT uFmt)
2209 WDML_LINK* pPrev = NULL;
2210 WDML_LINK* pCurrent = NULL;
2212 pCurrent = pInstance->links[side];
2214 while (pCurrent != NULL)
2216 if (pCurrent->hConv == hConv &&
2217 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2218 pCurrent->uFmt == uFmt)
2220 if (pCurrent == pInstance->links[side])
2222 pInstance->links[side] = pCurrent->next;
2226 pPrev->next = pCurrent->next;
2229 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2230 HeapFree(GetProcessHeap(), 0, pCurrent);
2235 pCurrent = pCurrent->next;
2239 /* this function is called to remove all links related to the conv.
2240 It should be called from both client and server when terminating
2243 /******************************************************************
2244 * WDML_RemoveAllLinks
2248 void WDML_RemoveAllLinks(WDML_INSTANCE* pInstance, WDML_CONV* pConv, WDML_SIDE side)
2250 WDML_LINK* pPrev = NULL;
2251 WDML_LINK* pCurrent = NULL;
2252 WDML_LINK* pNext = NULL;
2254 pCurrent = pInstance->links[side];
2256 while (pCurrent != NULL)
2258 if (pCurrent->hConv == (HCONV)pConv)
2260 if (pCurrent == pInstance->links[side])
2262 pInstance->links[side] = pCurrent->next;
2263 pNext = pCurrent->next;
2267 pPrev->next = pCurrent->next;
2268 pNext = pCurrent->next;
2271 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2273 HeapFree(GetProcessHeap(), 0, pCurrent);
2280 pCurrent = pCurrent->next;
2289 /******************************************************************
2294 WDML_LINK* WDML_FindLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2295 HSZ hszItem, BOOL use_fmt, UINT uFmt)
2297 WDML_LINK* pCurrent = NULL;
2299 for (pCurrent = pInstance->links[side]; pCurrent != NULL; pCurrent = pCurrent->next)
2301 /* we don't need to check for transaction type as it can be altered */
2303 if (pCurrent->hConv == hConv &&
2304 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2305 (!use_fmt || pCurrent->uFmt == uFmt))
2315 /* ================================================================
2317 * Transaction management
2319 * ================================================================ */
2321 /******************************************************************
2322 * WDML_AllocTransaction
2324 * Alloc a transaction structure for handling the message ddeMsg
2326 WDML_XACT* WDML_AllocTransaction(WDML_INSTANCE* pInstance, UINT ddeMsg,
2327 UINT wFmt, HSZ hszItem)
2330 static WORD tid = 1; /* FIXME: wrap around */
2332 pXAct = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_XACT));
2335 pInstance->lastError = DMLERR_MEMORY_ERROR;
2339 pXAct->xActID = tid++;
2340 pXAct->ddeMsg = ddeMsg;
2341 pXAct->hDdeData = 0;
2346 if ((pXAct->hszItem = hszItem)) WDML_IncHSZ(pInstance, pXAct->hszItem);
2354 /******************************************************************
2355 * WDML_QueueTransaction
2357 * Adds a transaction to the list of transaction
2359 void WDML_QueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2363 /* advance to last in queue */
2364 for (pt = &pConv->transactions; *pt != NULL; pt = &(*pt)->next);
2368 /******************************************************************
2369 * WDML_UnQueueTransaction
2373 BOOL WDML_UnQueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2377 for (pt = &pConv->transactions; *pt; pt = &(*pt)->next)
2388 /******************************************************************
2389 * WDML_FreeTransaction
2393 void WDML_FreeTransaction(WDML_INSTANCE* pInstance, WDML_XACT* pXAct, BOOL doFreePmt)
2395 /* free pmt(s) in pXAct too. check against one for not deleting TRUE return values */
2396 if (doFreePmt && (ULONG_PTR)pXAct->hMem > 1)
2398 GlobalFree(pXAct->hMem);
2400 if (pXAct->hszItem) WDML_DecHSZ(pInstance, pXAct->hszItem);
2402 HeapFree(GetProcessHeap(), 0, pXAct);
2405 /******************************************************************
2406 * WDML_FindTransaction
2410 WDML_XACT* WDML_FindTransaction(WDML_CONV* pConv, DWORD tid)
2415 for (pXAct = pConv->transactions; pXAct; pXAct = pXAct->next)
2417 if (pXAct->xActID == tid)
2423 /* ================================================================
2425 * Information broadcast across DDEML implementations
2427 * ================================================================ */
2429 struct tagWDML_BroadcastPmt
2437 /******************************************************************
2438 * WDML_BroadcastEnumProc
2442 static BOOL CALLBACK WDML_BroadcastEnumProc(HWND hWnd, LPARAM lParam)
2444 struct tagWDML_BroadcastPmt* s = (struct tagWDML_BroadcastPmt*)lParam;
2447 if (GetClassNameW(hWnd, buffer, 128) > 0 &&
2448 lstrcmpiW(buffer, s->clsName) == 0)
2450 PostMessageW(hWnd, s->uMsg, s->wParam, s->lParam);
2455 /******************************************************************
2456 * WDML_BroadcastDDEWindows
2460 void WDML_BroadcastDDEWindows(LPCWSTR clsName, UINT uMsg, WPARAM wParam, LPARAM lParam)
2462 struct tagWDML_BroadcastPmt s;
2464 s.clsName = clsName;
2468 EnumWindows(WDML_BroadcastEnumProc, (LPARAM)&s);