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user: Use DDE critical section exclusively for instance list protection.

This commit is contained in:
Dmitry Timoshkov 2006-11-15 21:22:35 +08:00 committed by Alexandre Julliard
parent 5ef324ee89
commit a3722bf494
4 changed files with 52 additions and 152 deletions
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76
dlls/user/dde_client.c
View File

@ -103,20 +103,16 @@ HCONV WINAPI DdeConnect(DWORD idInst, HSZ hszService, HSZ hszTopic,
TRACE("(0x%x,%p,%p,%p)\n", idInst, hszService, hszTopic, pCC);
EnterCriticalSection(&WDML_CritSect);
pInstance = WDML_GetInstance(idInst);
if (!pInstance)
{
goto theEnd;
}
return NULL;
/* make sure this conv is never created */
pConv = WDML_FindConv(pInstance, WDML_CLIENT_SIDE, hszService, hszTopic);
if (pConv != NULL)
{
ERR("This Conv already exists: (%p)\n", pConv);
goto theEnd;
return NULL;
}
/* we need to establish a conversation with
@ -178,14 +174,10 @@ HCONV WINAPI DdeConnect(DWORD idInst, HSZ hszService, HSZ hszTopic,
if (!aTpc) goto theEnd;
}
LeaveCriticalSection(&WDML_CritSect);
/* note: sent messages shall not use packing */
SendMessageTimeoutW( HWND_BROADCAST, WM_DDE_INITIATE, (WPARAM)hwndClient, MAKELPARAM(aSrv, aTpc),
SMTO_ABORTIFHUNG, 2000, NULL );
EnterCriticalSection(&WDML_CritSect);
pInstance = WDML_GetInstance(idInst);
if (!pInstance)
{
@ -218,7 +210,6 @@ HCONV WINAPI DdeConnect(DWORD idInst, HSZ hszService, HSZ hszTopic,
}
theEnd:
LeaveCriticalSection(&WDML_CritSect);
if (aSrv) GlobalDeleteAtom(aSrv);
if (aTpc) GlobalDeleteAtom(aTpc);
@ -237,7 +228,6 @@ HCONV WINAPI DdeReconnect(HCONV hConv)
TRACE("(%p)\n", hConv);
EnterCriticalSection(&WDML_CritSect);
pConv = WDML_GetConv(hConv, FALSE);
if (pConv != NULL && (pConv->wStatus & ST_CLIENT))
{
@ -261,14 +251,10 @@ HCONV WINAPI DdeReconnect(HCONV hConv)
aTpc = WDML_MakeAtomFromHsz(pConv->hszTopic);
if (!aSrv || !aTpc) goto theEnd;
LeaveCriticalSection(&WDML_CritSect);
/* note: sent messages shall not use packing */
ret = SendMessageW(hwndServer, WM_DDE_INITIATE, (WPARAM)hwndClient,
MAKELPARAM(aSrv, aTpc));
EnterCriticalSection(&WDML_CritSect);
pConv = WDML_GetConv(hConv, FALSE);
if (pConv == NULL)
{
@ -300,7 +286,6 @@ HCONV WINAPI DdeReconnect(HCONV hConv)
}
theEnd:
LeaveCriticalSection(&WDML_CritSect);
if (aSrv) GlobalDeleteAtom(aSrv);
if (aTpc) GlobalDeleteAtom(aTpc);
@ -1037,12 +1022,9 @@ static HDDEDATA WDML_SyncWaitTransactionReply(HCONV hConv, DWORD dwTimeout, WDML
{
HDDEDATA hdd;
EnterCriticalSection(&WDML_CritSect);
pConv = WDML_GetConv(hConv, FALSE);
if (pConv == NULL)
{
LeaveCriticalSection(&WDML_CritSect);
/* conversation no longer available... return failure */
return 0;
}
@ -1061,13 +1043,11 @@ static HDDEDATA WDML_SyncWaitTransactionReply(HCONV hConv, DWORD dwTimeout, WDML
if (ret)
{
pConv->instance->lastError = hdd ? DMLERR_NO_ERROR : DMLERR_NOTPROCESSED;
LeaveCriticalSection(&WDML_CritSect);
return hdd;
}
}
else
{
LeaveCriticalSection(&WDML_CritSect);
DispatchMessageW(&msg);
}
}
@ -1076,8 +1056,6 @@ static HDDEDATA WDML_SyncWaitTransactionReply(HCONV hConv, DWORD dwTimeout, WDML
TRACE("Timeout !!\n");
EnterCriticalSection(&WDML_CritSect);
pConv = WDML_GetConv(hConv, FALSE);
if (pConv != NULL)
{
@ -1096,7 +1074,6 @@ static HDDEDATA WDML_SyncWaitTransactionReply(HCONV hConv, DWORD dwTimeout, WDML
pConv->instance->lastError = err;
}
}
LeaveCriticalSection(&WDML_CritSect);
return 0;
}
@ -1120,13 +1097,11 @@ HDDEDATA WINAPI DdeClientTransaction(LPBYTE pData, DWORD cbData, HCONV hConv, HS
return 0;
}
EnterCriticalSection(&WDML_CritSect);
pConv = WDML_GetConv(hConv, TRUE);
if (pConv == NULL)
{
/* cannot set error... cannot get back to DDE instance */
goto theError;
return 0;
}
switch (wType)
@ -1145,7 +1120,7 @@ HDDEDATA WINAPI DdeClientTransaction(LPBYTE pData, DWORD cbData, HCONV hConv, HS
if (pData)
{
pConv->instance->lastError = DMLERR_INVALIDPARAMETER;
goto theError;
return 0;
}
pXAct = WDML_ClientQueueAdvise(pConv, wType, wFmt, hszItem);
break;
@ -1153,7 +1128,7 @@ HDDEDATA WINAPI DdeClientTransaction(LPBYTE pData, DWORD cbData, HCONV hConv, HS
if (pData)
{
pConv->instance->lastError = DMLERR_INVALIDPARAMETER;
goto theError;
return 0;
}
pXAct = WDML_ClientQueueUnadvise(pConv, wFmt, hszItem);
break;
@ -1161,7 +1136,7 @@ HDDEDATA WINAPI DdeClientTransaction(LPBYTE pData, DWORD cbData, HCONV hConv, HS
if (pData)
{
pConv->instance->lastError = DMLERR_INVALIDPARAMETER;
goto theError;
return 0;
}
pXAct = WDML_ClientQueueRequest(pConv, wFmt, hszItem);
break;
@ -1169,13 +1144,13 @@ HDDEDATA WINAPI DdeClientTransaction(LPBYTE pData, DWORD cbData, HCONV hConv, HS
FIXME("Unknown transaction type %04x\n", wType);
/* unknown transaction type */
pConv->instance->lastError = DMLERR_INVALIDPARAMETER;
goto theError;
return 0;
}
if (pXAct == NULL)
{
pConv->instance->lastError = DMLERR_MEMORY_ERROR;
goto theError;
return 0;
}
WDML_QueueTransaction(pConv, pXAct);
@ -1188,7 +1163,7 @@ HDDEDATA WINAPI DdeClientTransaction(LPBYTE pData, DWORD cbData, HCONV hConv, HS
WDML_UnQueueTransaction(pConv, pXAct);
WDML_FreeTransaction(pConv->instance, pXAct, TRUE);
pConv->instance->lastError = DMLERR_POSTMSG_FAILED;
goto theError;
return 0;
}
pXAct->dwTimeout = dwTimeout;
/* FIXME: should set the app bits on *pdwResult */
@ -1202,22 +1177,9 @@ HDDEDATA WINAPI DdeClientTransaction(LPBYTE pData, DWORD cbData, HCONV hConv, HS
hDdeData = (HDDEDATA)1;
}
else
{
DWORD count, i;
count = WDML_CritSect.RecursionCount;
for (i = 0; i < count; i++)
LeaveCriticalSection(&WDML_CritSect);
hDdeData = WDML_SyncWaitTransactionReply((HCONV)pConv, dwTimeout, pXAct, pdwResult);
for (i = 0; i < count; i++)
EnterCriticalSection(&WDML_CritSect);
}
LeaveCriticalSection(&WDML_CritSect);
hDdeData = WDML_SyncWaitTransactionReply(hConv, dwTimeout, pXAct, pdwResult);
return hDdeData;
theError:
LeaveCriticalSection(&WDML_CritSect);
return 0;
}
/*****************************************************************
@ -1231,7 +1193,6 @@ BOOL WINAPI DdeAbandonTransaction(DWORD idInst, HCONV hConv, DWORD idTransaction
TRACE("(%08x,%p,%08x);\n", idInst, hConv, idTransaction);
EnterCriticalSection(&WDML_CritSect);
if ((pInstance = WDML_GetInstance(idInst)))
{
if (hConv)
@ -1265,7 +1226,6 @@ BOOL WINAPI DdeAbandonTransaction(DWORD idInst, HCONV hConv, DWORD idTransaction
}
}
}
LeaveCriticalSection(&WDML_CritSect);
return TRUE;
}
@ -1336,8 +1296,6 @@ static LRESULT CALLBACK WDML_ClientProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPA
if (iMsg >= WM_DDE_FIRST && iMsg <= WM_DDE_LAST)
{
EnterCriticalSection(&WDML_CritSect);
pConv = WDML_GetConvFromWnd(hwnd);
if (pConv)
@ -1353,7 +1311,6 @@ static LRESULT CALLBACK WDML_ClientProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPA
WDML_HandleReply(pConv, &msg, &hdd, NULL);
}
LeaveCriticalSection(&WDML_CritSect);
return 0;
}
@ -1368,7 +1325,6 @@ BOOL WINAPI DdeDisconnect(HCONV hConv)
{
WDML_CONV* pConv = NULL;
WDML_XACT* pXAct;
DWORD count, i;
BOOL ret = FALSE;
TRACE("(%p)\n", hConv);
@ -1379,7 +1335,6 @@ BOOL WINAPI DdeDisconnect(HCONV hConv)
return FALSE;
}
EnterCriticalSection(&WDML_CritSect);
pConv = WDML_GetConv(hConv, TRUE);
if (pConv != NULL)
{
@ -1389,19 +1344,13 @@ BOOL WINAPI DdeDisconnect(HCONV hConv)
pXAct = WDML_ClientQueueTerminate(pConv);
if (pXAct != NULL)
{
count = WDML_CritSect.RecursionCount;
for (i = 0; i < count; i++)
LeaveCriticalSection(&WDML_CritSect);
if (PostMessageW(pConv->hwndServer, pXAct->ddeMsg,
(WPARAM)pConv->hwndClient, pXAct->lParam))
{
WDML_SyncWaitTransactionReply(hConv, 10000, pXAct, NULL);
ret = TRUE;
}
for (i = 0; i < count; i++)
EnterCriticalSection(&WDML_CritSect);
if (!ret)
else
pConv->instance->lastError = DMLERR_POSTMSG_FAILED;
WDML_FreeTransaction(pConv->instance, pXAct, TRUE);
@ -1414,7 +1363,6 @@ BOOL WINAPI DdeDisconnect(HCONV hConv)
}
}
}
LeaveCriticalSection(&WDML_CritSect);
return ret;
}
@ -1429,12 +1377,10 @@ BOOL WINAPI DdeImpersonateClient(HCONV hConv)
TRACE("(%p)\n", hConv);
EnterCriticalSection(&WDML_CritSect);
pConv = WDML_GetConv(hConv, TRUE);
if (pConv)
{
ret = ImpersonateDdeClientWindow(pConv->hwndClient, pConv->hwndServer);
}
LeaveCriticalSection(&WDML_CritSect);
return ret;
}

83
dlls/user/dde_misc.c
View File

@ -51,13 +51,15 @@ static WDML_INSTANCE* WDML_InstanceList = NULL;
static LONG WDML_MaxInstanceID = 0; /* OK for present, have to worry about wrap-around later */
const WCHAR WDML_szEventClass[] = {'W','i','n','e','D','d','e','E','v','e','n','t','C','l','a','s','s',0};
/* protection for instance list */
static CRITICAL_SECTION WDML_CritSect;
static CRITICAL_SECTION_DEBUG critsect_debug =
{
0, 0, &WDML_CritSect,
{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": WDML_CritSect") }
};
CRITICAL_SECTION WDML_CritSect = { &critsect_debug, -1, 0, 0, 0, 0 };
static CRITICAL_SECTION WDML_CritSect = { &critsect_debug, -1, 0, 0, 0, 0 };
/* ================================================================
*
@ -632,14 +634,11 @@ BOOL WINAPI DdeUninitialize(DWORD idInst)
TRACE("(%d)\n", idInst);
EnterCriticalSection(&WDML_CritSect);
/* First check instance
*/
pInstance = WDML_GetInstance(idInst);
if (pInstance == NULL)
{
LeaveCriticalSection(&WDML_CritSect);
/*
* Needs something here to record NOT_INITIALIZED ready for DdeGetLastError
*/
@ -682,10 +681,10 @@ BOOL WINAPI DdeUninitialize(DWORD idInst)
for (inst = WDML_InstanceList; inst->next != pInstance; inst = inst->next);
inst->next = pInstance->next;
}
/* leave crit sect and release the heap entry
/* release the heap entry
*/
HeapFree(GetProcessHeap(), 0, pInstance);
LeaveCriticalSection(&WDML_CritSect);
return TRUE;
}
@ -706,7 +705,9 @@ void WDML_NotifyThreadDetach(void)
next = pInstance->next;
if (pInstance->threadID == tid)
{
LeaveCriticalSection(&WDML_CritSect);
DdeUninitialize(pInstance->instanceID);
EnterCriticalSection(&WDML_CritSect);
}
}
LeaveCriticalSection(&WDML_CritSect);
@ -725,6 +726,7 @@ HDDEDATA WDML_InvokeCallback(WDML_INSTANCE* pInstance, UINT uType, UINT uFmt, H
if (pInstance == NULL)
return NULL;
TRACE("invoking CB%d[%p] (%x %x %p %p %p %p %lx %lx)\n",
pInstance->win16 ? 16 : 32, pInstance->callback, uType, uFmt,
hConv, hsz1, hsz2, hdata, dwData1, dwData2);
@ -752,6 +754,8 @@ WDML_INSTANCE* WDML_GetInstance(DWORD instId)
{
WDML_INSTANCE* pInstance;
EnterCriticalSection(&WDML_CritSect);
for (pInstance = WDML_InstanceList; pInstance != NULL; pInstance = pInstance->next)
{
if (pInstance->instanceID == instId)
@ -761,11 +765,15 @@ WDML_INSTANCE* WDML_GetInstance(DWORD instId)
FIXME("Tried to get instance from wrong thread\n");
continue;
}
return pInstance;
break;
}
}
TRACE("Instance entry missing\n");
return NULL;
LeaveCriticalSection(&WDML_CritSect);
if (!pInstance)
WARN("Instance entry missing for id %04x\n", instId);
return pInstance;
}
/******************************************************************
@ -792,8 +800,6 @@ UINT WINAPI DdeGetLastError(DWORD idInst)
DWORD error_code;
WDML_INSTANCE* pInstance;
EnterCriticalSection(&WDML_CritSect);
/* First check instance
*/
pInstance = WDML_GetInstance(idInst);
@ -807,7 +813,6 @@ UINT WINAPI DdeGetLastError(DWORD idInst)
pInstance->lastError = 0;
}
LeaveCriticalSection(&WDML_CritSect);
return error_code;
}
@ -1018,8 +1023,6 @@ DWORD WINAPI DdeQueryStringA(DWORD idInst, HSZ hsz, LPSTR psz, DWORD cchMax, INT
TRACE("(%d, %p, %p, %d, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
EnterCriticalSection(&WDML_CritSect);
/* First check instance
*/
pInstance = WDML_GetInstance(idInst);
@ -1028,7 +1031,6 @@ DWORD WINAPI DdeQueryStringA(DWORD idInst, HSZ hsz, LPSTR psz, DWORD cchMax, INT
if (iCodePage == 0) iCodePage = CP_WINANSI;
ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
}
LeaveCriticalSection(&WDML_CritSect);
TRACE("returning %d (%s)\n", ret, debugstr_a(psz));
return ret;
@ -1045,8 +1047,6 @@ DWORD WINAPI DdeQueryStringW(DWORD idInst, HSZ hsz, LPWSTR psz, DWORD cchMax, IN
TRACE("(%d, %p, %p, %d, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
EnterCriticalSection(&WDML_CritSect);
/* First check instance
*/
pInstance = WDML_GetInstance(idInst);
@ -1055,7 +1055,6 @@ DWORD WINAPI DdeQueryStringW(DWORD idInst, HSZ hsz, LPWSTR psz, DWORD cchMax, IN
if (iCodePage == 0) iCodePage = CP_WINUNICODE;
ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
}
LeaveCriticalSection(&WDML_CritSect);
TRACE("returning %d (%s)\n", ret, debugstr_w(psz));
return ret;
@ -1100,8 +1099,6 @@ HSZ WINAPI DdeCreateStringHandleA(DWORD idInst, LPCSTR psz, INT codepage)
TRACE("(%d,%s,%d)\n", idInst, debugstr_a(psz), codepage);
EnterCriticalSection(&WDML_CritSect);
pInstance = WDML_GetInstance(idInst);
if (pInstance)
{
@ -1109,7 +1106,6 @@ HSZ WINAPI DdeCreateStringHandleA(DWORD idInst, LPCSTR psz, INT codepage)
hsz = WDML_CreateString(pInstance, psz, codepage);
}
LeaveCriticalSection(&WDML_CritSect);
return hsz;
}
@ -1132,15 +1128,12 @@ HSZ WINAPI DdeCreateStringHandleW(DWORD idInst, LPCWSTR psz, INT codepage)
TRACE("(%d,%s,%d)\n", idInst, debugstr_w(psz), codepage);
EnterCriticalSection(&WDML_CritSect);
pInstance = WDML_GetInstance(idInst);
if (pInstance)
{
if (codepage == 0) codepage = CP_WINUNICODE;
hsz = WDML_CreateString(pInstance, psz, codepage);
}
LeaveCriticalSection(&WDML_CritSect);
return hsz;
}
@ -1158,16 +1151,12 @@ BOOL WINAPI DdeFreeStringHandle(DWORD idInst, HSZ hsz)
TRACE("(%d,%p):\n", idInst, hsz);
EnterCriticalSection(&WDML_CritSect);
/* First check instance
*/
pInstance = WDML_GetInstance(idInst);
if (pInstance)
ret = WDML_DecHSZ(pInstance, hsz);
LeaveCriticalSection(&WDML_CritSect);
return ret;
}
@ -1185,15 +1174,12 @@ BOOL WINAPI DdeKeepStringHandle(DWORD idInst, HSZ hsz)
TRACE("(%d,%p):\n", idInst, hsz);
EnterCriticalSection(&WDML_CritSect);
/* First check instance
*/
pInstance = WDML_GetInstance(idInst);
if (pInstance)
ret = WDML_IncHSZ(pInstance, hsz);
LeaveCriticalSection(&WDML_CritSect);
return ret;
}
@ -1899,14 +1885,11 @@ BOOL WINAPI DdeEnableCallback(DWORD idInst, HCONV hConv, UINT wCmd)
TRACE("(%d, %p, %04x)\n", idInst, hConv, wCmd);
EnterCriticalSection(&WDML_CritSect);
pConv = WDML_GetConv(hConv, TRUE);
if (pConv && pConv->instance->instanceID == idInst)
ret = WDML_EnableCallback(pConv, wCmd);
LeaveCriticalSection(&WDML_CritSect);
return ret;
}
@ -1922,18 +1905,19 @@ WDML_CONV* WDML_GetConv(HCONV hConv, BOOL checkConnected)
/* FIXME: should do better checking */
if (pConv == NULL || pConv->magic != WDML_CONV_MAGIC) return NULL;
if (!pConv->instance || pConv->instance->threadID != GetCurrentThreadId())
{
WARN("wrong thread ID\n");
pConv->instance->lastError = DMLERR_INVALIDPARAMETER; /* FIXME: check */
return NULL;
}
if (checkConnected && !(pConv->wStatus & ST_CONNECTED))
{
WARN("found conv but ain't connected\n");
pConv->instance->lastError = DMLERR_NO_CONV_ESTABLISHED;
return NULL;
}
if (!pConv->instance || GetCurrentThreadId() != pConv->instance->threadID)
{
WARN("wrong thread ID\n");
pConv->instance->lastError = DMLERR_INVALIDPARAMETER; /* FIXME: check */
return NULL;
}
return pConv;
}
@ -1995,18 +1979,13 @@ BOOL WDML_PostAck(WDML_CONV* pConv, WDML_SIDE side, WORD appRetCode,
BOOL WINAPI DdeSetUserHandle(HCONV hConv, DWORD id, DWORD hUser)
{
WDML_CONV* pConv;
BOOL ret = TRUE;
TRACE("(%p,%x,%x)\n", hConv, id, hUser);
EnterCriticalSection(&WDML_CritSect);
pConv = WDML_GetConv(hConv, FALSE);
if (pConv == NULL)
{
ret = FALSE;
goto theError;
}
return FALSE;
if (id == QID_SYNC)
{
pConv->hUser = hUser;
@ -2023,12 +2002,10 @@ BOOL WINAPI DdeSetUserHandle(HCONV hConv, DWORD id, DWORD hUser)
else
{
pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
ret = FALSE;
return FALSE;
}
}
theError:
LeaveCriticalSection(&WDML_CritSect);
return ret;
return TRUE;
}
/******************************************************************
@ -2127,8 +2104,6 @@ UINT WINAPI DdeQueryConvInfo(HCONV hConv, DWORD id, PCONVINFO lpConvInfo)
return 0;
}
EnterCriticalSection(&WDML_CritSect);
pConv = WDML_GetConv(hConv, FALSE);
if (pConv != NULL)
{
@ -2145,7 +2120,7 @@ UINT WINAPI DdeQueryConvInfo(HCONV hConv, DWORD id, PCONVINFO lpConvInfo)
}
ret = 0;
}
LeaveCriticalSection(&WDML_CritSect);
if (ret != 0)
memcpy(lpConvInfo, &ci, min((size_t)lpConvInfo->cb, sizeof(ci)));
return ret;

2
dlls/user/dde_private.h
View File

@ -169,8 +169,6 @@ typedef struct tagWDML_INSTANCE
WDML_LINK* links[2]; /* active links for this instance (client and server) */
} WDML_INSTANCE;
extern CRITICAL_SECTION WDML_CritSect; /* protection for instance list */
/* header for the DDE Data objects */
typedef struct tagDDE_DATAHANDLE_HEAD
{

43
dlls/user/dde_server.c
View File

@ -69,17 +69,13 @@ BOOL WINAPI DdePostAdvise(DWORD idInst, HSZ hszTopic, HSZ hszItem)
TRACE("(%d,%p,%p)\n", idInst, hszTopic, hszItem);
EnterCriticalSection(&WDML_CritSect);
pInstance = WDML_GetInstance(idInst);
if (pInstance == NULL || pInstance->links == NULL)
{
goto theError;
}
return FALSE;
atom = WDML_MakeAtomFromHsz(hszItem);
if (!atom) goto theError;
if (!atom) return FALSE;
/* first compute the number of links which will trigger a message */
count = 0;
@ -145,10 +141,9 @@ BOOL WINAPI DdePostAdvise(DWORD idInst, HSZ hszTopic, HSZ hszItem)
}
}
}
LeaveCriticalSection(&WDML_CritSect);
return TRUE;
theError:
LeaveCriticalSection(&WDML_CritSect);
if (atom) GlobalDeleteAtom(atom);
return FALSE;
}
@ -179,8 +174,6 @@ HDDEDATA WINAPI DdeNameService(DWORD idInst, HSZ hsz1, HSZ hsz2, UINT afCmd)
TRACE("(%d,%p,%p,%x)\n", idInst, hsz1, hsz2, afCmd);
EnterCriticalSection(&WDML_CritSect);
/* First check instance
*/
pInstance = WDML_GetInstance(idInst);
@ -188,7 +181,7 @@ HDDEDATA WINAPI DdeNameService(DWORD idInst, HSZ hsz1, HSZ hsz2, UINT afCmd)
{
TRACE("Instance not found as initialised\n");
/* Nothing has been initialised - exit now ! can return TRUE since effect is the same */
goto theError;
return NULL;
}
if (hsz2 != 0L)
@ -197,7 +190,7 @@ HDDEDATA WINAPI DdeNameService(DWORD idInst, HSZ hsz1, HSZ hsz2, UINT afCmd)
*/
pInstance->lastError = DMLERR_INVALIDPARAMETER;
WARN("Reserved parameter no-zero !!\n");
goto theError;
return NULL;
}
if (hsz1 == 0 && !(afCmd & DNS_UNREGISTER))
{
@ -206,7 +199,7 @@ HDDEDATA WINAPI DdeNameService(DWORD idInst, HSZ hsz1, HSZ hsz2, UINT afCmd)
*/
TRACE("General unregister unexpected flags\n");
pInstance->lastError = DMLERR_INVALIDPARAMETER;
goto theError;
return NULL;
}
switch (afCmd & (DNS_REGISTER | DNS_UNREGISTER))
@ -217,7 +210,7 @@ HDDEDATA WINAPI DdeNameService(DWORD idInst, HSZ hsz1, HSZ hsz2, UINT afCmd)
{
ERR("Trying to register already registered service!\n");
pInstance->lastError = DMLERR_DLL_USAGE;
goto theError;
return NULL;
}
TRACE("Adding service name\n");
@ -244,11 +237,9 @@ HDDEDATA WINAPI DdeNameService(DWORD idInst, HSZ hsz1, HSZ hsz2, UINT afCmd)
RegisterClassExW(&wndclass);
LeaveCriticalSection(&WDML_CritSect);
hwndServer = CreateWindowW(szServerNameClass, NULL,
WS_POPUP, 0, 0, 0, 0,
0, 0, 0, 0);
EnterCriticalSection(&WDML_CritSect);
SetWindowLongPtrW(hwndServer, GWL_WDML_INSTANCE, (ULONG_PTR)pInstance);
SetWindowLongPtrW(hwndServer, GWL_WDML_SERVER, (ULONG_PTR)pServer);
@ -285,19 +276,14 @@ HDDEDATA WINAPI DdeNameService(DWORD idInst, HSZ hsz1, HSZ hsz2, UINT afCmd)
/* trying to filter where no service names !!
*/
pInstance->lastError = DMLERR_DLL_USAGE;
goto theError;
return NULL;
}
else
{
pServer->filterOn = (afCmd & DNS_FILTERON) != 0;
}
}
LeaveCriticalSection(&WDML_CritSect);
return (HDDEDATA)TRUE;
theError:
LeaveCriticalSection(&WDML_CritSect);
return FALSE;
}
/******************************************************************
@ -998,13 +984,11 @@ static LRESULT CALLBACK WDML_ServerConvProc(HWND hwndServer, UINT iMsg, WPARAM w
if (iMsg == WM_DESTROY)
{
EnterCriticalSection(&WDML_CritSect);
pConv = WDML_GetConvFromWnd(hwndServer);
if (pConv && !(pConv->wStatus & ST_TERMINATED))
{
WDML_ServerHandleTerminate(pConv, NULL);
}
LeaveCriticalSection(&WDML_CritSect);
}
if (iMsg < WM_DDE_FIRST || iMsg > WM_DDE_LAST)
{
@ -1012,25 +996,23 @@ static LRESULT CALLBACK WDML_ServerConvProc(HWND hwndServer, UINT iMsg, WPARAM w
DefWindowProcA(hwndServer, iMsg, wParam, lParam);
}
EnterCriticalSection(&WDML_CritSect);
pInstance = WDML_GetInstanceFromWnd(hwndServer);
pConv = WDML_GetConvFromWnd(hwndServer);
if (!pConv)
{
ERR("Got a message (%x) on a not known conversation, dropping request\n", iMsg);
goto theError;
return 0;
}
if (pConv->hwndClient != WIN_GetFullHandle( (HWND)wParam ) || pConv->hwndServer != hwndServer)
{
ERR("mismatch between C/S windows and converstation\n");
goto theError;
return 0;
}
if (pConv->instance != pInstance || pConv->instance == NULL)
{
ERR("mismatch in instances\n");
goto theError;
return 0;
}
switch (iMsg)
@ -1083,7 +1065,6 @@ static LRESULT CALLBACK WDML_ServerConvProc(HWND hwndServer, UINT iMsg, WPARAM w
WDML_FreeTransaction(pInstance, pXAct, TRUE);
}
}
theError:
LeaveCriticalSection(&WDML_CritSect);
return 0;
}