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"
40 #include "dde_private.h"
41 #include "wine/unicode.h"
42 #include "wine/debug.h"
44 WINE_DEFAULT_DEBUG_CHANNEL(ddeml);
46 /* convert between ATOM and HSZ avoiding compiler warnings */
47 #define ATOM2HSZ(atom) ((HSZ) (ULONG_PTR)(atom))
48 #define HSZ2ATOM(hsz) ((ATOM) (ULONG_PTR)(hsz))
50 static WDML_INSTANCE* WDML_InstanceList = NULL;
51 static LONG WDML_MaxInstanceID = 0; /* OK for present, have to worry about wrap-around later */
52 const WCHAR WDML_szEventClass[] = {'W','i','n','e','D','d','e','E','v','e','n','t','C','l','a','s','s',0};
54 /* protection for instance list */
55 static CRITICAL_SECTION WDML_CritSect;
56 static CRITICAL_SECTION_DEBUG critsect_debug =
59 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
60 0, 0, { (DWORD_PTR)(__FILE__ ": WDML_CritSect") }
62 static CRITICAL_SECTION WDML_CritSect = { &critsect_debug, -1, 0, 0, 0, 0 };
64 /* ================================================================
66 * Pure DDE (non DDEML) management
68 * ================================================================ */
71 /*****************************************************************
72 * PackDDElParam (USER32.@)
77 LPARAM WINAPI PackDDElParam(UINT msg, UINT_PTR uiLo, UINT_PTR uiHi)
88 if (!(hMem = GlobalAlloc(GMEM_DDESHARE, sizeof(UINT_PTR) * 2)))
90 ERR("GlobalAlloc failed\n");
93 if (!(params = GlobalLock(hMem)))
95 ERR("GlobalLock failed (%p)\n", hMem);
107 return MAKELPARAM(uiLo, uiHi);
112 /*****************************************************************
113 * UnpackDDElParam (USER32.@)
119 BOOL WINAPI UnpackDDElParam(UINT msg, LPARAM lParam,
120 PUINT_PTR uiLo, PUINT_PTR uiHi)
130 if (!lParam) return FALSE;
131 if (!(params = GlobalLock( (HGLOBAL)lParam )))
133 ERR("GlobalLock failed (%lx)\n", lParam);
136 TRACE("unpacked: low %08x, high %08x\n", params[0], params[1]);
137 if (uiLo) *uiLo = params[0];
138 if (uiHi) *uiHi = params[1];
139 GlobalUnlock( (HGLOBAL)lParam );
144 if (uiHi) *uiHi = lParam;
148 if (uiLo) *uiLo = LOWORD(lParam);
149 if (uiHi) *uiHi = HIWORD(lParam);
155 /*****************************************************************
156 * FreeDDElParam (USER32.@)
162 BOOL WINAPI FreeDDElParam(UINT msg, LPARAM lParam)
170 /* first check if it's a global handle */
171 if (!GlobalHandle( (LPVOID)lParam )) return TRUE;
172 return !GlobalFree( (HGLOBAL)lParam );
180 /*****************************************************************
181 * ReuseDDElParam (USER32.@)
186 LPARAM WINAPI ReuseDDElParam(LPARAM lParam, UINT msgIn, UINT msgOut,
187 UINT_PTR uiLo, UINT_PTR uiHi)
203 if (!lParam) return 0;
204 if (!(params = GlobalLock( (HGLOBAL)lParam )))
206 ERR("GlobalLock failed\n");
211 TRACE("Reusing pack %08x %08x\n", uiLo, uiHi);
212 GlobalUnlock( (HGLOBAL)lParam );
216 FreeDDElParam( msgIn, lParam );
220 FreeDDElParam( msgIn, lParam );
221 return MAKELPARAM(uiLo, uiHi);
225 return PackDDElParam( msgOut, uiLo, uiHi );
229 /*****************************************************************
230 * ImpersonateDdeClientWindow (USER32.@)
233 * hWndClient [I] handle to DDE client window
234 * hWndServer [I] handle to DDE server window
236 BOOL WINAPI ImpersonateDdeClientWindow(HWND hWndClient, HWND hWndServer)
238 FIXME("(%p %p): stub\n", hWndClient, hWndServer);
242 /*****************************************************************
243 * DdeSetQualityOfService (USER32.@)
246 BOOL WINAPI DdeSetQualityOfService(HWND hwndClient, CONST SECURITY_QUALITY_OF_SERVICE *pqosNew,
247 PSECURITY_QUALITY_OF_SERVICE pqosPrev)
249 FIXME("(%p %p %p): stub\n", hwndClient, pqosNew, pqosPrev);
253 /* ================================================================
255 * Instance management
257 * ================================================================ */
259 /******************************************************************************
260 * IncrementInstanceId
262 * generic routine to increment the max instance Id and allocate a new application instance
264 static void WDML_IncrementInstanceId(WDML_INSTANCE* pInstance)
266 DWORD id = InterlockedIncrement(&WDML_MaxInstanceID);
268 pInstance->instanceID = id;
269 TRACE("New instance id %d allocated\n", id);
272 /******************************************************************
277 static LRESULT CALLBACK WDML_EventProc(HWND hwndEvent, UINT uMsg, WPARAM wParam, LPARAM lParam)
279 WDML_INSTANCE* pInstance;
284 case WM_WDML_REGISTER:
285 pInstance = WDML_GetInstanceFromWnd(hwndEvent);
286 /* try calling the Callback */
287 if (pInstance && !(pInstance->CBFflags & CBF_SKIP_REGISTRATIONS))
289 hsz1 = WDML_MakeHszFromAtom(pInstance, wParam);
290 hsz2 = WDML_MakeHszFromAtom(pInstance, lParam);
291 WDML_InvokeCallback(pInstance, XTYP_REGISTER, 0, 0, hsz1, hsz2, 0, 0, 0);
292 WDML_DecHSZ(pInstance, hsz1);
293 WDML_DecHSZ(pInstance, hsz2);
297 case WM_WDML_UNREGISTER:
298 pInstance = WDML_GetInstanceFromWnd(hwndEvent);
299 if (pInstance && !(pInstance->CBFflags & CBF_SKIP_UNREGISTRATIONS))
301 hsz1 = WDML_MakeHszFromAtom(pInstance, wParam);
302 hsz2 = WDML_MakeHszFromAtom(pInstance, lParam);
303 WDML_InvokeCallback(pInstance, XTYP_UNREGISTER, 0, 0, hsz1, hsz2, 0, 0, 0);
304 WDML_DecHSZ(pInstance, hsz1);
305 WDML_DecHSZ(pInstance, hsz2);
309 case WM_WDML_CONNECT_CONFIRM:
310 pInstance = WDML_GetInstanceFromWnd(hwndEvent);
311 if (pInstance && !(pInstance->CBFflags & CBF_SKIP_CONNECT_CONFIRMS))
314 /* confirm connection...
315 * lookup for this conv handle
317 HWND client = WIN_GetFullHandle( (HWND)wParam );
318 HWND server = WIN_GetFullHandle( (HWND)lParam );
319 for (pConv = pInstance->convs[WDML_SERVER_SIDE]; pConv != NULL; pConv = pConv->next)
321 if (pConv->hwndClient == client && pConv->hwndServer == server)
326 pConv->wStatus |= ST_ISLOCAL;
328 WDML_InvokeCallback(pInstance, XTYP_CONNECT_CONFIRM, 0, (HCONV)pConv,
329 pConv->hszTopic, pConv->hszService, 0, 0,
330 (pConv->wStatus & ST_ISSELF) ? 1 : 0);
335 return DefWindowProcW(hwndEvent, uMsg, wParam, lParam);
340 /******************************************************************
345 UINT WDML_Initialize(LPDWORD pidInst, PFNCALLBACK pfnCallback,
346 DWORD afCmd, DWORD ulRes, BOOL bUnicode, BOOL b16)
348 WDML_INSTANCE* pInstance;
349 WDML_INSTANCE* reference_inst;
351 WNDCLASSEXW wndclass;
353 TRACE("(%p,%p,0x%x,%d)\n",
354 pidInst, pfnCallback, afCmd, ulRes);
358 ERR("Reserved value not zero? What does this mean?\n");
359 /* trap this and no more until we know more */
360 return DMLERR_NO_ERROR;
363 /* grab enough heap for one control struct - not really necessary for re-initialise
364 * but allows us to use same validation routines */
365 pInstance = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_INSTANCE));
366 if (pInstance == NULL)
368 /* catastrophe !! warn user & abort */
369 ERR("Instance create failed - out of memory\n");
370 return DMLERR_SYS_ERROR;
372 pInstance->next = NULL;
373 pInstance->monitor = (afCmd | APPCLASS_MONITOR);
375 /* messy bit, spec implies that 'Client Only' can be set in 2 different ways, catch 1 here */
377 pInstance->clientOnly = afCmd & APPCMD_CLIENTONLY;
378 pInstance->instanceID = *pidInst; /* May need to add calling proc Id */
379 pInstance->threadID = GetCurrentThreadId();
380 pInstance->callback = *pfnCallback;
381 pInstance->unicode = bUnicode;
382 pInstance->win16 = b16;
383 pInstance->nodeList = NULL; /* node will be added later */
384 pInstance->monitorFlags = afCmd & MF_MASK;
385 pInstance->wStatus = 0;
386 pInstance->servers = NULL;
387 pInstance->convs[0] = NULL;
388 pInstance->convs[1] = NULL;
389 pInstance->links[0] = NULL;
390 pInstance->links[1] = NULL;
392 /* isolate CBF flags in one go, expect this will go the way of all attempts to be clever !! */
394 pInstance->CBFflags = afCmd^((afCmd&MF_MASK)|((afCmd&APPCMD_MASK)|(afCmd&APPCLASS_MASK)));
396 if (!pInstance->clientOnly)
398 /* Check for other way of setting Client-only !! */
399 pInstance->clientOnly =
400 (pInstance->CBFflags & CBF_FAIL_ALLSVRXACTIONS) == CBF_FAIL_ALLSVRXACTIONS;
403 TRACE("instance created - checking validity\n");
407 /* Initialisation of new Instance Identifier */
408 TRACE("new instance, callback %p flags %X\n",pfnCallback,afCmd);
410 EnterCriticalSection(&WDML_CritSect);
412 if (WDML_InstanceList == NULL)
414 /* can't be another instance in this case, assign to the base pointer */
415 WDML_InstanceList = pInstance;
417 /* since first must force filter of XTYP_CONNECT and XTYP_WILDCONNECT for
419 * ------------------------------- NOTE NOTE NOTE --------------------------
421 * the manual is not clear if this condition
422 * applies to the first call to DdeInitialize from an application, or the
423 * first call for a given callback !!!
426 pInstance->CBFflags = pInstance->CBFflags|APPCMD_FILTERINITS;
427 TRACE("First application instance detected OK\n");
428 /* allocate new instance ID */
429 WDML_IncrementInstanceId(pInstance);
433 /* really need to chain the new one in to the latest here, but after checking conditions
434 * such as trying to start a conversation from an application trying to monitor */
435 reference_inst = WDML_InstanceList;
436 TRACE("Subsequent application instance - starting checks\n");
437 while (reference_inst->next != NULL)
440 * This set of tests will work if application uses same instance Id
441 * at application level once allocated - which is what manual implies
442 * should happen. If someone tries to be
443 * clever (lazy ?) it will fail to pick up that later calls are for
444 * the same application - should we trust them ?
446 if (pInstance->instanceID == reference_inst->instanceID)
448 /* Check 1 - must be same Client-only state */
450 if (pInstance->clientOnly != reference_inst->clientOnly)
452 ret = DMLERR_DLL_USAGE;
456 /* Check 2 - cannot use 'Monitor' with any non-monitor modes */
458 if (pInstance->monitor != reference_inst->monitor)
460 ret = DMLERR_INVALIDPARAMETER;
464 /* Check 3 - must supply different callback address */
466 if (pInstance->callback == reference_inst->callback)
468 ret = DMLERR_DLL_USAGE;
472 reference_inst = reference_inst->next;
474 /* All cleared, add to chain */
476 TRACE("Application Instance checks finished\n");
477 WDML_IncrementInstanceId(pInstance);
478 reference_inst->next = pInstance;
480 LeaveCriticalSection(&WDML_CritSect);
482 *pidInst = pInstance->instanceID;
484 /* for deadlock issues, windows must always be created when outside the critical section */
485 wndclass.cbSize = sizeof(wndclass);
487 wndclass.lpfnWndProc = WDML_EventProc;
488 wndclass.cbClsExtra = 0;
489 wndclass.cbWndExtra = sizeof(ULONG_PTR);
490 wndclass.hInstance = 0;
492 wndclass.hCursor = 0;
493 wndclass.hbrBackground = 0;
494 wndclass.lpszMenuName = NULL;
495 wndclass.lpszClassName = WDML_szEventClass;
496 wndclass.hIconSm = 0;
498 RegisterClassExW(&wndclass);
500 pInstance->hwndEvent = CreateWindowW(WDML_szEventClass, NULL,
501 WS_POPUP, 0, 0, 0, 0,
504 SetWindowLongPtrW(pInstance->hwndEvent, GWL_WDML_INSTANCE, (ULONG_PTR)pInstance);
506 TRACE("New application instance processing finished OK\n");
510 /* Reinitialisation situation --- FIX */
511 TRACE("reinitialisation of (%p,%p,0x%x,%d): stub\n", pidInst, pfnCallback, afCmd, ulRes);
513 EnterCriticalSection(&WDML_CritSect);
515 if (WDML_InstanceList == NULL)
517 ret = DMLERR_INVALIDPARAMETER;
520 HeapFree(GetProcessHeap(), 0, pInstance); /* finished - release heap space used as work store */
521 /* can't reinitialise if we have initialised nothing !! */
522 reference_inst = WDML_InstanceList;
523 /* must first check if we have been given a valid instance to re-initialise !! how do we do that ? */
525 * MS allows initialisation without specifying a callback, should we allow addition of the
526 * callback by a later call to initialise ? - if so this lot will have to change
528 while (reference_inst->next != NULL)
530 if (*pidInst == reference_inst->instanceID && pfnCallback == reference_inst->callback)
532 /* Check 1 - cannot change client-only mode if set via APPCMD_CLIENTONLY */
534 if (reference_inst->clientOnly)
536 if ((reference_inst->CBFflags & CBF_FAIL_ALLSVRXACTIONS) != CBF_FAIL_ALLSVRXACTIONS)
538 /* i.e. Was set to Client-only and through APPCMD_CLIENTONLY */
540 if (!(afCmd & APPCMD_CLIENTONLY))
542 ret = DMLERR_INVALIDPARAMETER;
547 /* Check 2 - cannot change monitor modes */
549 if (pInstance->monitor != reference_inst->monitor)
551 ret = DMLERR_INVALIDPARAMETER;
555 /* Check 3 - trying to set Client-only via APPCMD when not set so previously */
557 if ((afCmd&APPCMD_CLIENTONLY) && !reference_inst->clientOnly)
559 ret = DMLERR_INVALIDPARAMETER;
564 reference_inst = reference_inst->next;
566 if (reference_inst->next == NULL)
568 ret = DMLERR_INVALIDPARAMETER;
571 /* All checked - change relevant flags */
573 reference_inst->CBFflags = pInstance->CBFflags;
574 reference_inst->clientOnly = pInstance->clientOnly;
575 reference_inst->monitorFlags = pInstance->monitorFlags;
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(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;
1005 ret = GetAtomNameA(HSZ2ATOM(hsz), ptr, cchMax);
1008 ret = GetAtomNameW(HSZ2ATOM(hsz), ptr, cchMax);
1011 ERR("Unknown code page %d\n", codepage);
1017 /*****************************************************************
1018 * DdeQueryStringA [USER32.@]
1020 DWORD WINAPI DdeQueryStringA(DWORD idInst, HSZ hsz, LPSTR psz, DWORD cchMax, INT iCodePage)
1023 WDML_INSTANCE* pInstance;
1025 TRACE("(%d, %p, %p, %d, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1027 /* First check instance
1029 pInstance = WDML_GetInstance(idInst);
1030 if (pInstance != NULL)
1032 if (iCodePage == 0) iCodePage = CP_WINANSI;
1033 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1036 TRACE("returning %d (%s)\n", ret, debugstr_a(psz));
1040 /*****************************************************************
1041 * DdeQueryStringW [USER32.@]
1044 DWORD WINAPI DdeQueryStringW(DWORD idInst, HSZ hsz, LPWSTR psz, DWORD cchMax, INT iCodePage)
1047 WDML_INSTANCE* pInstance;
1049 TRACE("(%d, %p, %p, %d, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
1051 /* First check instance
1053 pInstance = WDML_GetInstance(idInst);
1054 if (pInstance != NULL)
1056 if (iCodePage == 0) iCodePage = CP_WINUNICODE;
1057 ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
1060 TRACE("returning %d (%s)\n", ret, debugstr_w(psz));
1064 /******************************************************************
1069 static HSZ WDML_CreateString(WDML_INSTANCE* pInstance, LPCVOID ptr, int codepage)
1076 hsz = ATOM2HSZ(AddAtomA(ptr));
1077 TRACE("added atom %s with HSZ %p,\n", debugstr_a(ptr), hsz);
1080 hsz = ATOM2HSZ(AddAtomW(ptr));
1081 TRACE("added atom %s with HSZ %p,\n", debugstr_w(ptr), hsz);
1084 ERR("Unknown code page %d\n", codepage);
1087 WDML_InsertHSZNode(pInstance, hsz);
1091 /*****************************************************************
1092 * DdeCreateStringHandleA [USER32.@]
1094 * See DdeCreateStringHandleW.
1096 HSZ WINAPI DdeCreateStringHandleA(DWORD idInst, LPCSTR psz, INT codepage)
1099 WDML_INSTANCE* pInstance;
1101 TRACE("(%d,%s,%d)\n", idInst, debugstr_a(psz), codepage);
1103 pInstance = WDML_GetInstance(idInst);
1106 if (codepage == 0) codepage = CP_WINANSI;
1107 hsz = WDML_CreateString(pInstance, psz, codepage);
1114 /******************************************************************************
1115 * DdeCreateStringHandleW [USER32.@] Creates handle to identify string
1118 * idInst [I] Instance identifier
1119 * psz [I] Pointer to string
1120 * codepage [I] Code page identifier
1122 * Success: String handle
1125 HSZ WINAPI DdeCreateStringHandleW(DWORD idInst, LPCWSTR psz, INT codepage)
1127 WDML_INSTANCE* pInstance;
1130 TRACE("(%d,%s,%d)\n", idInst, debugstr_w(psz), codepage);
1132 pInstance = WDML_GetInstance(idInst);
1135 if (codepage == 0) codepage = CP_WINUNICODE;
1136 hsz = WDML_CreateString(pInstance, psz, codepage);
1142 /*****************************************************************
1143 * DdeFreeStringHandle (USER32.@)
1148 BOOL WINAPI DdeFreeStringHandle(DWORD idInst, HSZ hsz)
1150 WDML_INSTANCE* pInstance;
1153 TRACE("(%d,%p):\n", idInst, hsz);
1155 /* First check instance
1157 pInstance = WDML_GetInstance(idInst);
1159 ret = WDML_DecHSZ(pInstance, hsz);
1164 /*****************************************************************
1165 * DdeKeepStringHandle (USER32.@)
1171 BOOL WINAPI DdeKeepStringHandle(DWORD idInst, HSZ hsz)
1173 WDML_INSTANCE* pInstance;
1176 TRACE("(%d,%p):\n", idInst, hsz);
1178 /* First check instance
1180 pInstance = WDML_GetInstance(idInst);
1182 ret = WDML_IncHSZ(pInstance, hsz);
1187 /*****************************************************************
1188 * DdeCmpStringHandles (USER32.@)
1190 * Compares the value of two string handles. This comparison is
1191 * not case sensitive.
1194 * hsz1 [I] Handle to the first string
1195 * hsz2 [I] Handle to the second string
1198 * -1 The value of hsz1 is zero or less than hsz2
1199 * 0 The values of hsz 1 and 2 are the same or both zero.
1200 * 1 The value of hsz2 is zero of less than hsz1
1202 INT WINAPI DdeCmpStringHandles(HSZ hsz1, HSZ hsz2)
1204 WCHAR psz1[MAX_BUFFER_LEN];
1205 WCHAR psz2[MAX_BUFFER_LEN];
1209 ret1 = GetAtomNameW(HSZ2ATOM(hsz1), psz1, MAX_BUFFER_LEN);
1210 ret2 = GetAtomNameW(HSZ2ATOM(hsz2), psz2, MAX_BUFFER_LEN);
1212 TRACE("(%p<%s> %p<%s>);\n", hsz1, debugstr_w(psz1), hsz2, debugstr_w(psz2));
1214 /* Make sure we found both strings. */
1215 if (ret1 == 0 && ret2 == 0)
1217 /* If both are not found, return both "zero strings". */
1222 /* If hsz1 is a not found, return hsz1 is "zero string". */
1227 /* If hsz2 is a not found, return hsz2 is "zero string". */
1232 /* Compare the two strings we got (case insensitive). */
1233 ret = lstrcmpiW(psz1, psz2);
1234 /* Since strcmp returns any number smaller than
1235 * 0 when the first string is found to be less than
1236 * the second one we must make sure we are returning
1237 * the proper values.
1252 /* ================================================================
1254 * Data handle management
1256 * ================================================================ */
1258 /*****************************************************************
1259 * DdeCreateDataHandle (USER32.@)
1261 HDDEDATA WINAPI DdeCreateDataHandle(DWORD idInst, LPBYTE pSrc, DWORD cb, DWORD cbOff,
1262 HSZ hszItem, UINT wFmt, UINT afCmd)
1264 /* For now, we ignore idInst, hszItem.
1265 * The purpose of these arguments still need to be investigated.
1270 DDE_DATAHANDLE_HEAD* pDdh;
1271 WCHAR psz[MAX_BUFFER_LEN];
1273 if (!GetAtomNameW(HSZ2ATOM(hszItem), psz, MAX_BUFFER_LEN))
1275 psz[0] = HSZ2ATOM(hszItem);
1279 TRACE("(%d,%p,cb %d, cbOff %d,%p <%s>,fmt %04x,%x)\n",
1280 idInst, pSrc, cb, cbOff, hszItem, debugstr_w(psz), wFmt, afCmd);
1282 if (afCmd != 0 && afCmd != HDATA_APPOWNED)
1285 /* we use the first 4 bytes to store the size */
1286 if (!(hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, cb + cbOff + sizeof(DDE_DATAHANDLE_HEAD))))
1288 ERR("GlobalAlloc failed\n");
1292 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock(hMem);
1299 pDdh->cfFormat = wFmt;
1300 pDdh->bAppOwned = (afCmd == HDATA_APPOWNED);
1302 pByte = (LPBYTE)(pDdh + 1);
1305 memcpy(pByte, pSrc + cbOff, cb);
1309 TRACE("=> %p\n", hMem);
1310 return (HDDEDATA)hMem;
1313 /*****************************************************************
1315 * DdeAddData (USER32.@)
1317 HDDEDATA WINAPI DdeAddData(HDDEDATA hData, LPBYTE pSrc, DWORD cb, DWORD cbOff)
1319 DWORD old_sz, new_sz;
1322 TRACE("(%p,%p,cb %d, cbOff %d)\n", hData, pSrc, cb, cbOff);
1324 pDst = DdeAccessData(hData, &old_sz);
1325 if (!pDst) return 0;
1327 new_sz = cb + cbOff;
1328 if (new_sz > old_sz)
1330 DdeUnaccessData(hData);
1331 hData = GlobalReAlloc((HGLOBAL)hData, new_sz + sizeof(DDE_DATAHANDLE_HEAD),
1332 GMEM_MOVEABLE | GMEM_DDESHARE);
1333 pDst = DdeAccessData(hData, &old_sz);
1336 if (!pDst) return 0;
1338 memcpy(pDst + cbOff, pSrc, cb);
1339 DdeUnaccessData(hData);
1343 /******************************************************************************
1344 * DdeGetData [USER32.@] Copies data from DDE object to local buffer
1348 * hData [I] Handle to DDE object
1349 * pDst [I] Pointer to destination buffer
1350 * cbMax [I] Amount of data to copy
1351 * cbOff [I] Offset to beginning of data
1354 * Size of memory object associated with handle
1356 DWORD WINAPI DdeGetData(HDDEDATA hData, LPBYTE pDst, DWORD cbMax, DWORD cbOff)
1358 DWORD dwSize, dwRet;
1361 TRACE("(%p,%p,%d,%d)\n", hData, pDst, cbMax, cbOff);
1363 pByte = DdeAccessData(hData, &dwSize);
1371 else if (cbOff + cbMax < dwSize)
1375 else if (cbOff < dwSize)
1377 dwRet = dwSize - cbOff;
1383 if (pDst && dwRet != 0)
1385 memcpy(pDst, pByte + cbOff, dwRet);
1387 DdeUnaccessData(hData);
1396 /*****************************************************************
1397 * DdeAccessData (USER32.@)
1399 LPBYTE WINAPI DdeAccessData(HDDEDATA hData, LPDWORD pcbDataSize)
1401 HGLOBAL hMem = (HGLOBAL)hData;
1402 DDE_DATAHANDLE_HEAD* pDdh;
1404 TRACE("(%p,%p)\n", hData, pcbDataSize);
1406 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock(hMem);
1409 ERR("Failed on GlobalLock(%p)\n", hMem);
1413 if (pcbDataSize != NULL)
1415 *pcbDataSize = GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD);
1417 TRACE("=> %p (%lu) fmt %04x\n", pDdh + 1, GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD), pDdh->cfFormat);
1418 return (LPBYTE)(pDdh + 1);
1421 /*****************************************************************
1422 * DdeUnaccessData (USER32.@)
1424 BOOL WINAPI DdeUnaccessData(HDDEDATA hData)
1426 HGLOBAL hMem = (HGLOBAL)hData;
1428 TRACE("(%p)\n", hData);
1435 /*****************************************************************
1436 * DdeFreeDataHandle (USER32.@)
1438 BOOL WINAPI DdeFreeDataHandle(HDDEDATA hData)
1440 TRACE("(%p)\n", hData);
1441 return GlobalFree((HGLOBAL)hData) == 0;
1444 /******************************************************************
1449 BOOL WDML_IsAppOwned(HDDEDATA hData)
1451 DDE_DATAHANDLE_HEAD* pDdh;
1454 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock((HGLOBAL)hData);
1457 ret = pDdh->bAppOwned;
1458 GlobalUnlock((HGLOBAL)hData);
1463 /* ================================================================
1465 * Global <=> Data handle management
1467 * ================================================================ */
1469 /* Note: we use a DDEDATA, but layout of DDEDATA, DDEADVISE and DDEPOKE structures is similar:
1471 * (bytes) (bits) comment
1472 * 0 16 bit fields for options (release, ackreq, response...)
1473 * 2 16 clipboard format
1474 * 4 ? data to be used
1476 HDDEDATA WDML_Global2DataHandle(HGLOBAL hMem, WINE_DDEHEAD* p)
1484 pDd = GlobalLock(hMem);
1485 size = GlobalSize(hMem) - sizeof(WINE_DDEHEAD);
1488 if (p) memcpy(p, pDd, sizeof(WINE_DDEHEAD));
1489 switch (pDd->cfFormat)
1492 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1493 pDd->cfFormat, hMem);
1497 ret = DdeCreateDataHandle(0, pDd->Value, size, 0, 0, pDd->cfFormat, 0);
1500 if (size >= sizeof(BITMAP))
1502 BITMAP* bmp = (BITMAP*)pDd->Value;
1503 int count = bmp->bmWidthBytes * bmp->bmHeight * bmp->bmPlanes;
1504 if (size >= sizeof(BITMAP) + count)
1508 if ((hbmp = CreateBitmap(bmp->bmWidth, bmp->bmHeight,
1509 bmp->bmPlanes, bmp->bmBitsPixel,
1510 pDd->Value + sizeof(BITMAP))))
1512 ret = DdeCreateDataHandle(0, (LPBYTE)&hbmp, sizeof(hbmp),
1513 0, 0, CF_BITMAP, 0);
1515 else ERR("Can't create bmp\n");
1519 ERR("Wrong count: %u / %d\n", size, count);
1521 } else ERR("No bitmap header\n");
1530 /******************************************************************
1531 * WDML_DataHandle2Global
1535 HGLOBAL WDML_DataHandle2Global(HDDEDATA hDdeData, BOOL fResponse, BOOL fRelease,
1536 BOOL fDeferUpd, BOOL fAckReq)
1538 DDE_DATAHANDLE_HEAD* pDdh;
1542 dwSize = GlobalSize((HGLOBAL)hDdeData) - sizeof(DDE_DATAHANDLE_HEAD);
1543 pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock((HGLOBAL)hDdeData);
1546 WINE_DDEHEAD* wdh = NULL;
1548 switch (pDdh->cfFormat)
1551 FIXME("Unsupported format (%04x) for data %p, passing raw information\n",
1552 pDdh->cfFormat, hDdeData);
1556 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, sizeof(WINE_DDEHEAD) + dwSize);
1557 if (hMem && (wdh = GlobalLock(hMem)))
1559 memcpy(wdh + 1, pDdh + 1, dwSize);
1563 if (dwSize >= sizeof(HBITMAP))
1567 HBITMAP hbmp = *(HBITMAP*)(pDdh + 1);
1569 if (GetObjectW(hbmp, sizeof(bmp), &bmp))
1571 count = bmp.bmWidthBytes * bmp.bmHeight;
1572 hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE,
1573 sizeof(WINE_DDEHEAD) + sizeof(bmp) + count);
1574 if (hMem && (wdh = GlobalLock(hMem)))
1576 memcpy(wdh + 1, &bmp, sizeof(bmp));
1577 GetBitmapBits(hbmp, count, ((char*)(wdh + 1)) + sizeof(bmp));
1586 wdh->fResponse = fResponse;
1587 wdh->fRelease = fRelease;
1588 wdh->fDeferUpd = fDeferUpd;
1589 wdh->fAckReq = fAckReq;
1590 wdh->cfFormat = pDdh->cfFormat;
1593 GlobalUnlock((HGLOBAL)hDdeData);
1599 /* ================================================================
1603 * ================================================================ */
1605 /******************************************************************
1610 WDML_SERVER* WDML_AddServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1612 static const WCHAR fmtW[] = {'%','s','(','0','x','%','0','8','l','x',')',0};
1613 WDML_SERVER* pServer;
1617 pServer = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_SERVER));
1618 if (pServer == NULL) return NULL;
1620 pServer->hszService = hszService;
1621 WDML_IncHSZ(pInstance, hszService);
1623 DdeQueryStringW(pInstance->instanceID, hszService, buf1, 256, CP_WINUNICODE);
1624 snprintfW(buf2, 256, fmtW, buf1, GetCurrentProcessId());
1625 pServer->hszServiceSpec = DdeCreateStringHandleW(pInstance->instanceID, buf2, CP_WINUNICODE);
1627 pServer->atomService = WDML_MakeAtomFromHsz(pServer->hszService);
1628 pServer->atomServiceSpec = WDML_MakeAtomFromHsz(pServer->hszServiceSpec);
1630 pServer->filterOn = TRUE;
1632 pServer->next = pInstance->servers;
1633 pInstance->servers = pServer;
1637 /******************************************************************
1642 void WDML_RemoveServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1644 WDML_SERVER* pPrev = NULL;
1645 WDML_SERVER* pServer = NULL;
1647 WDML_CONV* pConvNext;
1649 pServer = pInstance->servers;
1651 while (pServer != NULL)
1653 if (DdeCmpStringHandles(pServer->hszService, hszService) == 0)
1655 WDML_BroadcastDDEWindows(WDML_szEventClass, WM_WDML_UNREGISTER,
1656 pServer->atomService, pServer->atomServiceSpec);
1657 /* terminate all conversations for given topic */
1658 for (pConv = pInstance->convs[WDML_SERVER_SIDE]; pConv != NULL; pConv = pConvNext)
1660 pConvNext = pConv->next;
1661 if (DdeCmpStringHandles(pConv->hszService, hszService) == 0)
1663 WDML_RemoveConv(pConv, WDML_SERVER_SIDE);
1664 /* don't care about return code (whether client window is present or not) */
1665 PostMessageW(pConv->hwndClient, WM_DDE_TERMINATE, (WPARAM)pConv->hwndServer, 0);
1668 if (pServer == pInstance->servers)
1670 pInstance->servers = pServer->next;
1674 pPrev->next = pServer->next;
1677 DestroyWindow(pServer->hwndServer);
1678 WDML_DecHSZ(pInstance, pServer->hszServiceSpec);
1679 WDML_DecHSZ(pInstance, pServer->hszService);
1681 GlobalDeleteAtom(pServer->atomService);
1682 GlobalDeleteAtom(pServer->atomServiceSpec);
1684 HeapFree(GetProcessHeap(), 0, pServer);
1689 pServer = pServer->next;
1693 /*****************************************************************************
1696 * generic routine to return a pointer to the relevant ServiceNode
1697 * for a given service name, or NULL if the entry does not exist
1700 WDML_SERVER* WDML_FindServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
1702 WDML_SERVER* pServer;
1704 for (pServer = pInstance->servers; pServer != NULL; pServer = pServer->next)
1706 if (hszService == pServer->hszService)
1711 TRACE("Service name missing\n");
1715 /* ================================================================
1717 * Conversation management
1719 * ================================================================ */
1721 /******************************************************************
1726 WDML_CONV* WDML_AddConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1727 HSZ hszService, HSZ hszTopic, HWND hwndClient, HWND hwndServer)
1731 /* no converstation yet, add it */
1732 pConv = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_CONV));
1733 if (!pConv) return NULL;
1735 pConv->instance = pInstance;
1736 WDML_IncHSZ(pInstance, pConv->hszService = hszService);
1737 WDML_IncHSZ(pInstance, pConv->hszTopic = hszTopic);
1738 pConv->magic = WDML_CONV_MAGIC;
1739 pConv->hwndServer = hwndServer;
1740 pConv->hwndClient = hwndClient;
1741 pConv->transactions = NULL;
1743 pConv->wStatus = (side == WDML_CLIENT_SIDE) ? ST_CLIENT : 0L;
1744 pConv->wStatus |= pInstance->wStatus;
1745 /* check if both side of the conversation are of the same instance */
1746 if (GetWindowThreadProcessId(hwndClient, NULL) == GetWindowThreadProcessId(hwndServer, NULL) &&
1747 WDML_GetInstanceFromWnd(hwndClient) == WDML_GetInstanceFromWnd(hwndServer))
1749 pConv->wStatus |= ST_ISSELF;
1751 pConv->wConvst = XST_NULL;
1753 pConv->next = pInstance->convs[side];
1754 pInstance->convs[side] = pConv;
1756 TRACE("pConv->wStatus %04x\n", pConv->wStatus);
1761 /******************************************************************
1766 WDML_CONV* WDML_FindConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
1767 HSZ hszService, HSZ hszTopic)
1769 WDML_CONV* pCurrent = NULL;
1771 for (pCurrent = pInstance->convs[side]; pCurrent != NULL; pCurrent = pCurrent->next)
1773 if (DdeCmpStringHandles(pCurrent->hszService, hszService) == 0 &&
1774 DdeCmpStringHandles(pCurrent->hszTopic, hszTopic) == 0)
1783 /******************************************************************
1788 void WDML_RemoveConv(WDML_CONV* pRef, WDML_SIDE side)
1790 WDML_CONV* pPrev = NULL;
1791 WDML_CONV* pCurrent;
1793 WDML_XACT* pXActNext;
1799 /* remove any pending transaction */
1800 for (pXAct = pRef->transactions; pXAct != NULL; pXAct = pXActNext)
1802 pXActNext = pXAct->next;
1803 WDML_FreeTransaction(pRef->instance, pXAct, TRUE);
1806 WDML_RemoveAllLinks(pRef->instance, pRef, side);
1808 /* FIXME: should we keep the window around ? it seems so (at least on client side
1809 * to let QueryConvInfo work after conv termination, but also to implement
1812 /* destroy conversation window, but first remove pConv from hWnd.
1813 * this would help the wndProc do appropriate handling upon a WM_DESTROY message
1815 hWnd = (side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer;
1816 SetWindowLongPtrW(hWnd, GWL_WDML_CONVERSATION, 0);
1818 DestroyWindow((side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer);
1820 WDML_DecHSZ(pRef->instance, pRef->hszService);
1821 WDML_DecHSZ(pRef->instance, pRef->hszTopic);
1823 for (pCurrent = pRef->instance->convs[side]; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
1825 if (pCurrent == pRef)
1827 if (pCurrent == pRef->instance->convs[side])
1829 pRef->instance->convs[side] = pCurrent->next;
1833 pPrev->next = pCurrent->next;
1835 pCurrent->magic = 0;
1836 HeapFree(GetProcessHeap(), 0, pCurrent);
1842 /******************************************************************
1843 * WDML_EnableCallback
1845 static BOOL WDML_EnableCallback(WDML_CONV *pConv, UINT wCmd)
1847 if (wCmd == EC_DISABLE)
1849 pConv->wStatus |= ST_BLOCKED;
1850 TRACE("EC_DISABLE: conv %p status flags %04x\n", pConv, pConv->wStatus);
1854 if (wCmd == EC_QUERYWAITING)
1855 return pConv->transactions ? TRUE : FALSE;
1857 if (wCmd != EC_ENABLEALL && wCmd != EC_ENABLEONE)
1859 FIXME("Unknown command code %04x\n", wCmd);
1863 if (wCmd == EC_ENABLEALL)
1865 pConv->wStatus &= ~ST_BLOCKED;
1866 TRACE("EC_ENABLEALL: conv %p status flags %04x\n", pConv, pConv->wStatus);
1869 while (pConv->transactions)
1871 WDML_XACT *pXAct = pConv->transactions;
1873 if (pConv->wStatus & ST_CLIENT)
1875 /* transaction should be in the queue until handled */
1876 WDML_ClientHandle(pConv, pXAct, 0, NULL);
1877 WDML_UnQueueTransaction(pConv, pXAct);
1881 /* transaction should be removed from the queue before handling */
1882 WDML_UnQueueTransaction(pConv, pXAct);
1883 WDML_ServerHandle(pConv, pXAct);
1886 WDML_FreeTransaction(pConv->instance, pXAct, TRUE);
1888 if (wCmd == EC_ENABLEONE) break;
1893 /*****************************************************************
1894 * DdeEnableCallback (USER32.@)
1896 BOOL WINAPI DdeEnableCallback(DWORD idInst, HCONV hConv, UINT wCmd)
1901 TRACE("(%d, %p, %04x)\n", idInst, hConv, wCmd);
1905 pConv = WDML_GetConv(hConv, TRUE);
1907 if (pConv && pConv->instance->instanceID == idInst)
1908 ret = WDML_EnableCallback(pConv, wCmd);
1912 WDML_INSTANCE *pInstance = WDML_GetInstance(idInst);
1917 TRACE("adding flags %04x to instance %p\n", wCmd, pInstance);
1918 pInstance->wStatus |= wCmd;
1920 if (wCmd == EC_DISABLE)
1922 pInstance->wStatus |= ST_BLOCKED;
1923 TRACE("EC_DISABLE: inst %p status flags %04x\n", pInstance, pInstance->wStatus);
1925 else if (wCmd == EC_ENABLEALL)
1927 pInstance->wStatus &= ~ST_BLOCKED;
1928 TRACE("EC_ENABLEALL: inst %p status flags %04x\n", pInstance, pInstance->wStatus);
1933 for (pConv = pInstance->convs[WDML_CLIENT_SIDE]; pConv != NULL; pConv = pConv->next)
1935 ret = WDML_EnableCallback(pConv, wCmd);
1936 if (ret && wCmd == EC_QUERYWAITING) break;
1943 /******************************************************************
1948 WDML_CONV* WDML_GetConv(HCONV hConv, BOOL checkConnected)
1950 WDML_CONV* pConv = (WDML_CONV*)hConv;
1952 /* FIXME: should do better checking */
1953 if (pConv == NULL || pConv->magic != WDML_CONV_MAGIC) return NULL;
1955 if (!pConv->instance || pConv->instance->threadID != GetCurrentThreadId())
1957 WARN("wrong thread ID\n");
1958 pConv->instance->lastError = DMLERR_INVALIDPARAMETER; /* FIXME: check */
1962 if (checkConnected && !(pConv->wStatus & ST_CONNECTED))
1964 WARN("found conv but ain't connected\n");
1965 pConv->instance->lastError = DMLERR_NO_CONV_ESTABLISHED;
1972 /******************************************************************
1973 * WDML_GetConvFromWnd
1977 WDML_CONV* WDML_GetConvFromWnd(HWND hWnd)
1979 return (WDML_CONV*)GetWindowLongPtrW(hWnd, GWL_WDML_CONVERSATION);
1982 /******************************************************************
1987 BOOL WDML_PostAck(WDML_CONV* pConv, WDML_SIDE side, WORD appRetCode,
1988 BOOL fBusy, BOOL fAck, UINT pmt, LPARAM lParam, UINT oldMsg)
1993 if (side == WDML_SERVER_SIDE)
1995 from = pConv->hwndServer;
1996 to = pConv->hwndClient;
2000 to = pConv->hwndServer;
2001 from = pConv->hwndClient;
2004 ddeAck.bAppReturnCode = appRetCode;
2005 ddeAck.reserved = 0;
2006 ddeAck.fBusy = fBusy;
2009 TRACE("Posting a %s ack\n", ddeAck.fAck ? "positive" : "negative");
2011 lParam = (lParam) ? ReuseDDElParam(lParam, oldMsg, WM_DDE_ACK, *(WORD*)&ddeAck, pmt) :
2012 PackDDElParam(WM_DDE_ACK, *(WORD*)&ddeAck, pmt);
2013 if (!PostMessageW(to, WM_DDE_ACK, (WPARAM)from, lParam))
2015 pConv->wStatus &= ~ST_CONNECTED;
2016 pConv->instance->lastError = DMLERR_POSTMSG_FAILED;
2017 FreeDDElParam(WM_DDE_ACK, lParam);
2023 /*****************************************************************
2024 * DdeSetUserHandle (USER32.@)
2026 BOOL WINAPI DdeSetUserHandle(HCONV hConv, DWORD id, DWORD hUser)
2030 TRACE("(%p,%x,%x)\n", hConv, id, hUser);
2032 pConv = WDML_GetConv(hConv, FALSE);
2038 pConv->hUser = hUser;
2044 pXAct = WDML_FindTransaction(pConv, id);
2047 pXAct->hUser = hUser;
2051 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2058 /******************************************************************
2059 * WDML_GetLocalConvInfo
2063 static BOOL WDML_GetLocalConvInfo(WDML_CONV* pConv, CONVINFO* ci, DWORD id)
2069 ci->hConvPartner = (pConv->wStatus & ST_ISLOCAL) ? (HCONV)((ULONG_PTR)pConv | 1) : 0;
2070 ci->hszSvcPartner = pConv->hszService;
2071 ci->hszServiceReq = pConv->hszService; /* FIXME: they shouldn't be the same, should they ? */
2072 ci->hszTopic = pConv->hszTopic;
2073 ci->wStatus = pConv->wStatus;
2075 side = (pConv->wStatus & ST_CLIENT) ? WDML_CLIENT_SIDE : WDML_SERVER_SIDE;
2077 for (pLink = pConv->instance->links[side]; pLink != NULL; pLink = pLink->next)
2079 if (pLink->hConv == (HCONV)pConv)
2081 ci->wStatus |= ST_ADVISE;
2086 /* FIXME: non handled status flags:
2092 ci->wConvst = pConv->wConvst; /* FIXME */
2094 ci->wLastError = 0; /* FIXME: note it's not the instance last error */
2096 ci->ConvCtxt = pConv->convContext;
2097 if (ci->wStatus & ST_CLIENT)
2099 ci->hwnd = pConv->hwndClient;
2100 ci->hwndPartner = pConv->hwndServer;
2104 ci->hwnd = pConv->hwndServer;
2105 ci->hwndPartner = pConv->hwndClient;
2109 ci->hUser = pConv->hUser;
2118 pXAct = WDML_FindTransaction(pConv, id);
2121 ci->hUser = pXAct->hUser;
2122 ci->hszItem = pXAct->hszItem;
2123 ci->wFmt = pXAct->wFmt;
2124 ci->wType = pXAct->wType;
2129 pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
2135 /******************************************************************
2136 * DdeQueryConvInfo (USER32.@)
2138 * FIXME: Set last DDE error on failure.
2140 UINT WINAPI DdeQueryConvInfo(HCONV hConv, DWORD id, PCONVINFO lpConvInfo)
2142 UINT ret = lpConvInfo->cb;
2146 TRACE("(%p,%x,%p)\n", hConv, id, lpConvInfo);
2150 FIXME("hConv is NULL\n");
2154 pConv = WDML_GetConv(hConv, FALSE);
2157 if (!WDML_GetLocalConvInfo(pConv, &ci, id))
2162 if ((ULONG_PTR)hConv & 1)
2164 pConv = WDML_GetConv((HCONV)((ULONG_PTR)hConv & ~1), FALSE);
2166 FIXME("Request on remote conversation information is not implemented yet\n");
2172 memcpy(lpConvInfo, &ci, min((size_t)lpConvInfo->cb, sizeof(ci)));
2176 /* ================================================================
2178 * Link (hot & warm) management
2180 * ================================================================ */
2182 /******************************************************************
2187 void WDML_AddLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2188 UINT wType, HSZ hszItem, UINT wFmt)
2192 pLink = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_LINK));
2199 pLink->hConv = hConv;
2200 pLink->transactionType = wType;
2201 WDML_IncHSZ(pInstance, pLink->hszItem = hszItem);
2203 pLink->next = pInstance->links[side];
2204 pInstance->links[side] = pLink;
2207 /******************************************************************
2212 void WDML_RemoveLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2213 HSZ hszItem, UINT uFmt)
2215 WDML_LINK* pPrev = NULL;
2216 WDML_LINK* pCurrent = NULL;
2218 pCurrent = pInstance->links[side];
2220 while (pCurrent != NULL)
2222 if (pCurrent->hConv == hConv &&
2223 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2224 pCurrent->uFmt == uFmt)
2226 if (pCurrent == pInstance->links[side])
2228 pInstance->links[side] = pCurrent->next;
2232 pPrev->next = pCurrent->next;
2235 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2236 HeapFree(GetProcessHeap(), 0, pCurrent);
2241 pCurrent = pCurrent->next;
2245 /* this function is called to remove all links related to the conv.
2246 It should be called from both client and server when terminating
2249 /******************************************************************
2250 * WDML_RemoveAllLinks
2254 void WDML_RemoveAllLinks(WDML_INSTANCE* pInstance, WDML_CONV* pConv, WDML_SIDE side)
2256 WDML_LINK* pPrev = NULL;
2257 WDML_LINK* pCurrent = NULL;
2258 WDML_LINK* pNext = NULL;
2260 pCurrent = pInstance->links[side];
2262 while (pCurrent != NULL)
2264 if (pCurrent->hConv == (HCONV)pConv)
2266 if (pCurrent == pInstance->links[side])
2268 pInstance->links[side] = pCurrent->next;
2269 pNext = pCurrent->next;
2273 pPrev->next = pCurrent->next;
2274 pNext = pCurrent->next;
2277 WDML_DecHSZ(pInstance, pCurrent->hszItem);
2279 HeapFree(GetProcessHeap(), 0, pCurrent);
2286 pCurrent = pCurrent->next;
2295 /******************************************************************
2300 WDML_LINK* WDML_FindLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
2301 HSZ hszItem, BOOL use_fmt, UINT uFmt)
2303 WDML_LINK* pCurrent = NULL;
2305 for (pCurrent = pInstance->links[side]; pCurrent != NULL; pCurrent = pCurrent->next)
2307 /* we don't need to check for transaction type as it can be altered */
2309 if (pCurrent->hConv == hConv &&
2310 DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
2311 (!use_fmt || pCurrent->uFmt == uFmt))
2321 /* ================================================================
2323 * Transaction management
2325 * ================================================================ */
2327 /******************************************************************
2328 * WDML_AllocTransaction
2330 * Alloc a transaction structure for handling the message ddeMsg
2332 WDML_XACT* WDML_AllocTransaction(WDML_INSTANCE* pInstance, UINT ddeMsg,
2333 UINT wFmt, HSZ hszItem)
2336 static WORD tid = 1; /* FIXME: wrap around */
2338 pXAct = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_XACT));
2341 pInstance->lastError = DMLERR_MEMORY_ERROR;
2345 pXAct->xActID = tid++;
2346 pXAct->ddeMsg = ddeMsg;
2347 pXAct->hDdeData = 0;
2352 if ((pXAct->hszItem = hszItem)) WDML_IncHSZ(pInstance, pXAct->hszItem);
2360 /******************************************************************
2361 * WDML_QueueTransaction
2363 * Adds a transaction to the list of transaction
2365 void WDML_QueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2369 /* advance to last in queue */
2370 for (pt = &pConv->transactions; *pt != NULL; pt = &(*pt)->next);
2374 /******************************************************************
2375 * WDML_UnQueueTransaction
2379 BOOL WDML_UnQueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
2383 for (pt = &pConv->transactions; *pt; pt = &(*pt)->next)
2394 /******************************************************************
2395 * WDML_FreeTransaction
2399 void WDML_FreeTransaction(WDML_INSTANCE* pInstance, WDML_XACT* pXAct, BOOL doFreePmt)
2401 /* free pmt(s) in pXAct too. check against one for not deleting TRUE return values */
2402 if (doFreePmt && (ULONG_PTR)pXAct->hMem > 1)
2404 GlobalFree(pXAct->hMem);
2406 if (pXAct->hszItem) WDML_DecHSZ(pInstance, pXAct->hszItem);
2408 HeapFree(GetProcessHeap(), 0, pXAct);
2411 /******************************************************************
2412 * WDML_FindTransaction
2416 WDML_XACT* WDML_FindTransaction(WDML_CONV* pConv, DWORD tid)
2421 for (pXAct = pConv->transactions; pXAct; pXAct = pXAct->next)
2423 if (pXAct->xActID == tid)
2429 /* ================================================================
2431 * Information broadcast across DDEML implementations
2433 * ================================================================ */
2435 struct tagWDML_BroadcastPmt
2443 /******************************************************************
2444 * WDML_BroadcastEnumProc
2448 static BOOL CALLBACK WDML_BroadcastEnumProc(HWND hWnd, LPARAM lParam)
2450 struct tagWDML_BroadcastPmt* s = (struct tagWDML_BroadcastPmt*)lParam;
2453 if (GetClassNameW(hWnd, buffer, 128) > 0 &&
2454 lstrcmpiW(buffer, s->clsName) == 0)
2456 PostMessageW(hWnd, s->uMsg, s->wParam, s->lParam);
2461 /******************************************************************
2462 * WDML_BroadcastDDEWindows
2466 void WDML_BroadcastDDEWindows(LPCWSTR clsName, UINT uMsg, WPARAM wParam, LPARAM lParam)
2468 struct tagWDML_BroadcastPmt s;
2470 s.clsName = clsName;
2474 EnumWindows(WDML_BroadcastEnumProc, (LPARAM)&s);