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Sweden-Number/dlls/user/dde/misc.c

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/* -*- tab-width: 8; c-basic-offset: 4 -*- */
/*
* DDEML library
*
* Copyright 1997 Alexandre Julliard
* Copyright 1997 Len White
* Copyright 1999 Keith Matthews
* Copyright 2000 Corel
* Copyright 2001 Eric Pouech
*/
#include <string.h>
#include <stdio.h>
#include "winbase.h"
#include "windef.h"
#include "wingdi.h"
#include "winuser.h"
#include "winerror.h"
#include "dde.h"
#include "ddeml.h"
#include "win.h"
#include "debugtools.h"
#include "dde/dde_private.h"
DEFAULT_DEBUG_CHANNEL(ddeml);
static WDML_INSTANCE* WDML_InstanceList = NULL;
static DWORD WDML_MaxInstanceID = 0; /* OK for present, have to worry about wrap-around later */
const char WDML_szEventClass[] = "DdeEventClass";
CRITICAL_SECTION WDML_CritSect = CRITICAL_SECTION_INIT("WDML_CritSect");
/* ================================================================
*
* Pure DDE (non DDEML) management
*
* ================================================================ */
static BOOL DDE_RequirePacking(UINT msg)
{
BOOL ret;
switch (msg)
{
case WM_DDE_ACK:
case WM_DDE_ADVISE:
case WM_DDE_DATA:
case WM_DDE_POKE:
ret = TRUE;
break;
case WM_DDE_EXECUTE: /* strange, NT 2000 (at least) really uses packing here... */
case WM_DDE_INITIATE:
case WM_DDE_REQUEST: /* assuming clipboard formats are 16 bit */
case WM_DDE_TERMINATE:
case WM_DDE_UNADVISE: /* assuming clipboard formats are 16 bit */
ret = FALSE;
break;
default:
TRACE("Unknown message %04x\n", msg);
ret = FALSE;
break;
}
return ret;
}
/*****************************************************************
* PackDDElParam (USER32.@)
*
* RETURNS
* the packed lParam
*/
LPARAM WINAPI PackDDElParam(UINT msg, UINT uiLo, UINT uiHi)
{
HGLOBAL hMem;
UINT* params;
if (!DDE_RequirePacking(msg))
return MAKELONG(uiLo, uiHi);
if (!(hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, sizeof(UINT) * 2)))
{
ERR("GlobalAlloc failed\n");
return 0;
}
params = GlobalLock(hMem);
if (params == NULL)
{
ERR("GlobalLock failed (%x)\n", hMem);
return 0;
}
params[0] = uiLo;
params[1] = uiHi;
GlobalUnlock(hMem);
return (LPARAM)hMem;
}
/*****************************************************************
* UnpackDDElParam (USER32.@)
*
* RETURNS
* success: nonzero
* failure: zero
*/
BOOL WINAPI UnpackDDElParam(UINT msg, LPARAM lParam,
PUINT uiLo, PUINT uiHi)
{
HGLOBAL hMem;
UINT *params;
if (!DDE_RequirePacking(msg))
{
*uiLo = LOWORD(lParam);
*uiHi = HIWORD(lParam);
return TRUE;
}
if (lParam == 0)
{
return FALSE;
}
hMem = (HGLOBAL)lParam;
params = GlobalLock(hMem);
if (params == NULL)
{
ERR("GlobalLock failed (%x)\n", hMem);
return FALSE;
}
*uiLo = params[0];
*uiHi = params[1];
GlobalUnlock(hMem);
return TRUE;
}
/*****************************************************************
* FreeDDElParam (USER32.@)
*
* RETURNS
* success: nonzero
* failure: zero
*/
BOOL WINAPI FreeDDElParam(UINT msg, LPARAM lParam)
{
HGLOBAL hMem = (HGLOBAL)lParam;
if (!DDE_RequirePacking(msg))
return TRUE;
if (lParam == 0)
{
return FALSE;
}
return GlobalFree(hMem) == (HGLOBAL)NULL;
}
/*****************************************************************
* ReuseDDElParam (USER32.@)
*
* RETURNS
* the packed lParam
*/
LPARAM WINAPI ReuseDDElParam(LPARAM lParam, UINT msgIn, UINT msgOut,
UINT uiLo, UINT uiHi)
{
HGLOBAL hMem;
UINT* params;
BOOL in, out;
in = DDE_RequirePacking(msgIn);
out = DDE_RequirePacking(msgOut);
if (!in)
{
return PackDDElParam(msgOut, uiLo, uiHi);
}
if (lParam == 0)
{
return FALSE;
}
if (!out)
{
FreeDDElParam(msgIn, lParam);
return MAKELONG(uiLo, uiHi);
}
hMem = (HGLOBAL)lParam;
params = GlobalLock(hMem);
if (params == NULL)
{
ERR("GlobalLock failed\n");
return 0;
}
params[0] = uiLo;
params[1] = uiHi;
TRACE("Reusing pack %08x %08x\n", uiLo, uiHi);
GlobalLock(hMem);
return lParam;
}
/*****************************************************************
* ImpersonateDdeClientWindow (USER32.@)
*
* PARAMS
* hWndClient [I] handle to DDE client window
* hWndServer [I] handle to DDE server window
*/
BOOL WINAPI ImpersonateDdeClientWindow(HWND hWndClient, HWND hWndServer)
{
FIXME("(%04x %04x): stub\n", hWndClient, hWndServer);
return FALSE;
}
/*****************************************************************
* DdeSetQualityOfService (USER32.@)
*/
BOOL WINAPI DdeSetQualityOfService(HWND hwndClient, CONST SECURITY_QUALITY_OF_SERVICE *pqosNew,
PSECURITY_QUALITY_OF_SERVICE pqosPrev)
{
FIXME("(%04x %p %p): stub\n", hwndClient, pqosNew, pqosPrev);
return TRUE;
}
/* ================================================================
*
* Instance management
*
* ================================================================ */
/******************************************************************************
* IncrementInstanceId
*
* generic routine to increment the max instance Id and allocate a new application instance
*/
static void WDML_IncrementInstanceId(WDML_INSTANCE* pInstance)
{
DWORD id = InterlockedIncrement(&WDML_MaxInstanceID);
pInstance->instanceID = id;
TRACE("New instance id %ld allocated\n", id);
}
/******************************************************************
* WDML_EventProc
*
*
*/
static LRESULT CALLBACK WDML_EventProc(HWND hwndEvent, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
WDML_INSTANCE* pInstance;
HSZ hsz1, hsz2;
switch (uMsg)
{
case WM_WDML_REGISTER:
pInstance = WDML_GetInstanceFromWnd(hwndEvent);
/* try calling the Callback */
if (pInstance && !(pInstance->CBFflags & CBF_SKIP_REGISTRATIONS))
{
hsz1 = WDML_MakeHszFromAtom(pInstance, wParam);
hsz2 = WDML_MakeHszFromAtom(pInstance, lParam);
WDML_InvokeCallback(pInstance, XTYP_REGISTER, 0, 0, hsz1, hsz2, 0, 0, 0);
WDML_DecHSZ(pInstance, hsz1);
WDML_DecHSZ(pInstance, hsz2);
}
break;
case WM_WDML_UNREGISTER:
pInstance = WDML_GetInstanceFromWnd(hwndEvent);
if (pInstance && !(pInstance->CBFflags & CBF_SKIP_UNREGISTRATIONS))
{
hsz1 = WDML_MakeHszFromAtom(pInstance, wParam);
hsz2 = WDML_MakeHszFromAtom(pInstance, lParam);
WDML_InvokeCallback(pInstance, XTYP_UNREGISTER, 0, 0, hsz1, hsz2, 0, 0, 0);
WDML_DecHSZ(pInstance, hsz1);
WDML_DecHSZ(pInstance, hsz2);
}
break;
case WM_WDML_CONNECT_CONFIRM:
pInstance = WDML_GetInstanceFromWnd(hwndEvent);
if (pInstance && !(pInstance->CBFflags & CBF_SKIP_CONNECT_CONFIRMS))
{
WDML_CONV* pConv;
/* confirm connection...
* lookup for this conv handle
*/
HWND client = WIN_GetFullHandle( (HWND)wParam );
HWND server = WIN_GetFullHandle( (HWND)lParam );
for (pConv = pInstance->convs[WDML_SERVER_SIDE]; pConv != NULL; pConv = pConv->next)
{
if (pConv->hwndClient == client && pConv->hwndServer == server)
break;
}
if (pConv)
{
pConv->wStatus |= ST_ISLOCAL;
WDML_InvokeCallback(pInstance, XTYP_CONNECT_CONFIRM, 0, (HCONV)pConv,
pConv->hszTopic, pConv->hszService, 0, 0,
(pConv->wStatus & ST_ISSELF) ? 1 : 0);
}
}
break;
default:
return DefWindowProcA(hwndEvent, uMsg, wParam, lParam);
}
return 0;
}
/******************************************************************
* WDML_Initialize
*
*
*/
UINT WDML_Initialize(LPDWORD pidInst, PFNCALLBACK pfnCallback,
DWORD afCmd, DWORD ulRes, BOOL bUnicode, BOOL b16)
{
WDML_INSTANCE* pInstance;
WDML_INSTANCE* reference_inst;
UINT ret;
WNDCLASSEXA wndclass;
TRACE("(%p,%p,0x%lx,%ld)\n",
pidInst, pfnCallback, afCmd, ulRes);
if (ulRes)
{
ERR("Reserved value not zero? What does this mean?\n");
/* trap this and no more until we know more */
return DMLERR_NO_ERROR;
}
/* grab enough heap for one control struct - not really necessary for re-initialise
* but allows us to use same validation routines */
pInstance = (WDML_INSTANCE*)HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_INSTANCE));
if (pInstance == NULL)
{
/* catastrophe !! warn user & abort */
ERR("Instance create failed - out of memory\n");
return DMLERR_SYS_ERROR;
}
pInstance->next = NULL;
pInstance->monitor = (afCmd | APPCLASS_MONITOR);
/* messy bit, spec implies that 'Client Only' can be set in 2 different ways, catch 1 here */
pInstance->clientOnly = afCmd & APPCMD_CLIENTONLY;
pInstance->instanceID = *pidInst; /* May need to add calling proc Id */
pInstance->threadID = GetCurrentThreadId();
pInstance->callback = *pfnCallback;
pInstance->unicode = bUnicode;
pInstance->win16 = b16;
pInstance->nodeList = NULL; /* node will be added later */
pInstance->monitorFlags = afCmd & MF_MASK;
pInstance->servers = NULL;
pInstance->convs[0] = NULL;
pInstance->convs[1] = NULL;
pInstance->links[0] = NULL;
pInstance->links[1] = NULL;
/* isolate CBF flags in one go, expect this will go the way of all attempts to be clever !! */
pInstance->CBFflags = afCmd^((afCmd&MF_MASK)|((afCmd&APPCMD_MASK)|(afCmd&APPCLASS_MASK)));
if (!pInstance->clientOnly)
{
/* Check for other way of setting Client-only !! */
pInstance->clientOnly =
(pInstance->CBFflags & CBF_FAIL_ALLSVRXACTIONS) == CBF_FAIL_ALLSVRXACTIONS;
}
TRACE("instance created - checking validity \n");
if (*pidInst == 0)
{
/* Initialisation of new Instance Identifier */
TRACE("new instance, callback %p flags %lX\n",pfnCallback,afCmd);
EnterCriticalSection(&WDML_CritSect);
if (WDML_InstanceList == NULL)
{
/* can't be another instance in this case, assign to the base pointer */
WDML_InstanceList = pInstance;
/* since first must force filter of XTYP_CONNECT and XTYP_WILDCONNECT for
* present
* ------------------------------- NOTE NOTE NOTE --------------------------
*
* the manual is not clear if this condition
* applies to the first call to DdeInitialize from an application, or the
* first call for a given callback !!!
*/
pInstance->CBFflags = pInstance->CBFflags|APPCMD_FILTERINITS;
TRACE("First application instance detected OK\n");
/* allocate new instance ID */
WDML_IncrementInstanceId(pInstance);
}
else
{
/* really need to chain the new one in to the latest here, but after checking conditions
* such as trying to start a conversation from an application trying to monitor */
reference_inst = WDML_InstanceList;
TRACE("Subsequent application instance - starting checks\n");
while (reference_inst->next != NULL)
{
/*
* This set of tests will work if application uses same instance Id
* at application level once allocated - which is what manual implies
* should happen. If someone tries to be
* clever (lazy ?) it will fail to pick up that later calls are for
* the same application - should we trust them ?
*/
if (pInstance->instanceID == reference_inst->instanceID)
{
/* Check 1 - must be same Client-only state */
if (pInstance->clientOnly != reference_inst->clientOnly)
{
ret = DMLERR_DLL_USAGE;
goto theError;
}
/* Check 2 - cannot use 'Monitor' with any non-monitor modes */
if (pInstance->monitor != reference_inst->monitor)
{
ret = DMLERR_INVALIDPARAMETER;
goto theError;
}
/* Check 3 - must supply different callback address */
if (pInstance->callback == reference_inst->callback)
{
ret = DMLERR_DLL_USAGE;
goto theError;
}
}
reference_inst = reference_inst->next;
}
/* All cleared, add to chain */
TRACE("Application Instance checks finished\n");
WDML_IncrementInstanceId(pInstance);
reference_inst->next = pInstance;
}
LeaveCriticalSection(&WDML_CritSect);
*pidInst = pInstance->instanceID;
/* for deadlock issues, windows must always be created when outside the critical section */
wndclass.cbSize = sizeof(wndclass);
wndclass.style = 0;
wndclass.lpfnWndProc = WDML_EventProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = sizeof(DWORD);
wndclass.hInstance = 0;
wndclass.hIcon = 0;
wndclass.hCursor = 0;
wndclass.hbrBackground = 0;
wndclass.lpszMenuName = NULL;
wndclass.lpszClassName = WDML_szEventClass;
wndclass.hIconSm = 0;
RegisterClassExA(&wndclass);
pInstance->hwndEvent = CreateWindowA(WDML_szEventClass, NULL,
WS_POPUP, 0, 0, 0, 0,
0, 0, 0, 0);
SetWindowLongA(pInstance->hwndEvent, GWL_WDML_INSTANCE, (DWORD)pInstance);
TRACE("New application instance processing finished OK\n");
}
else
{
/* Reinitialisation situation --- FIX */
TRACE("reinitialisation of (%p,%p,0x%lx,%ld): stub\n", pidInst, pfnCallback, afCmd, ulRes);
EnterCriticalSection(&WDML_CritSect);
if (WDML_InstanceList == NULL)
{
ret = DMLERR_DLL_USAGE;
goto theError;
}
HeapFree(GetProcessHeap(), 0, pInstance); /* finished - release heap space used as work store */
/* can't reinitialise if we have initialised nothing !! */
reference_inst = WDML_InstanceList;
/* must first check if we have been given a valid instance to re-initialise !! how do we do that ? */
/*
* MS allows initialisation without specifying a callback, should we allow addition of the
* callback by a later call to initialise ? - if so this lot will have to change
*/
while (reference_inst->next != NULL)
{
if (*pidInst == reference_inst->instanceID && pfnCallback == reference_inst->callback)
{
/* Check 1 - cannot change client-only mode if set via APPCMD_CLIENTONLY */
if (reference_inst->clientOnly)
{
if ((reference_inst->CBFflags & CBF_FAIL_ALLSVRXACTIONS) != CBF_FAIL_ALLSVRXACTIONS)
{
/* i.e. Was set to Client-only and through APPCMD_CLIENTONLY */
if (!(afCmd & APPCMD_CLIENTONLY))
{
ret = DMLERR_DLL_USAGE;
goto theError;
}
}
}
/* Check 2 - cannot change monitor modes */
if (pInstance->monitor != reference_inst->monitor)
{
ret = DMLERR_DLL_USAGE;
goto theError;
}
/* Check 3 - trying to set Client-only via APPCMD when not set so previously */
if ((afCmd&APPCMD_CLIENTONLY) && !reference_inst->clientOnly)
{
ret = DMLERR_DLL_USAGE;
goto theError;
}
break;
}
reference_inst = reference_inst->next;
}
if (reference_inst->next == NULL)
{
/* Crazy situation - trying to re-initialize something that has not beeen initialized !!
*
* Manual does not say what we do, cannot return DMLERR_NOT_INITIALIZED so what ?
*/
ret = DMLERR_INVALIDPARAMETER;
goto theError;
}
/* All checked - change relevant flags */
reference_inst->CBFflags = pInstance->CBFflags;
reference_inst->clientOnly = pInstance->clientOnly;
reference_inst->monitorFlags = pInstance->monitorFlags;
LeaveCriticalSection(&WDML_CritSect);
}
return DMLERR_NO_ERROR;
theError:
HeapFree(GetProcessHeap(), 0, pInstance);
LeaveCriticalSection(&WDML_CritSect);
return ret;
}
/******************************************************************************
* DdeInitializeA (USER32.@)
*/
UINT WINAPI DdeInitializeA(LPDWORD pidInst, PFNCALLBACK pfnCallback,
DWORD afCmd, DWORD ulRes)
{
return WDML_Initialize(pidInst, pfnCallback, afCmd, ulRes, FALSE, FALSE);
}
/******************************************************************************
* DdeInitializeW [USER32.@]
* Registers an application with the DDEML
*
* PARAMS
* pidInst [I] Pointer to instance identifier
* pfnCallback [I] Pointer to callback function
* afCmd [I] Set of command and filter flags
* ulRes [I] Reserved
*
* RETURNS
* Success: DMLERR_NO_ERROR
* Failure: DMLERR_DLL_USAGE, DMLERR_INVALIDPARAMETER, DMLERR_SYS_ERROR
*/
UINT WINAPI DdeInitializeW(LPDWORD pidInst, PFNCALLBACK pfnCallback,
DWORD afCmd, DWORD ulRes)
{
return WDML_Initialize(pidInst, pfnCallback, afCmd, ulRes, TRUE, FALSE);
}
/*****************************************************************
* DdeUninitialize [USER32.@] Frees DDEML resources
*
* PARAMS
* idInst [I] Instance identifier
*
* RETURNS
* Success: TRUE
* Failure: FALSE
*/
BOOL WINAPI DdeUninitialize(DWORD idInst)
{
/* Stage one - check if we have a handle for this instance
*/
WDML_INSTANCE* pInstance;
WDML_CONV* pConv;
WDML_CONV* pConvNext;
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
*/
return FALSE;
}
/* first terminate all conversations client side
* this shall close existing links...
*/
for (pConv = pInstance->convs[WDML_CLIENT_SIDE]; pConv != NULL; pConv = pConvNext)
{
pConvNext = pConv->next;
DdeDisconnect((HCONV)pConv);
}
if (pInstance->convs[WDML_CLIENT_SIDE])
FIXME("still pending conversations\n");
/* then unregister all known service names */
DdeNameService(idInst, 0, 0, DNS_UNREGISTER);
/* Free the nodes that were not freed by this instance
* and remove the nodes from the list of HSZ nodes.
*/
WDML_FreeAllHSZ(pInstance);
DestroyWindow(pInstance->hwndEvent);
/* OK now delete the instance handle itself */
if (WDML_InstanceList == pInstance)
{
/* special case - the first/only entry */
WDML_InstanceList = pInstance->next;
}
else
{
/* general case, remove entry */
WDML_INSTANCE* inst;
for (inst = WDML_InstanceList; inst->next != pInstance; inst = inst->next);
inst->next = pInstance->next;
}
/* leave crit sect and release the heap entry
*/
HeapFree(GetProcessHeap(), 0, pInstance);
LeaveCriticalSection(&WDML_CritSect);
return TRUE;
}
/******************************************************************
* WDML_NotifyThreadExit
*
*
*/
void WDML_NotifyThreadDetach(void)
{
WDML_INSTANCE* pInstance;
WDML_INSTANCE* next;
DWORD tid = GetCurrentThreadId();
EnterCriticalSection(&WDML_CritSect);
for (pInstance = WDML_InstanceList; pInstance != NULL; pInstance = next)
{
next = pInstance->next;
if (pInstance->threadID == tid)
{
DdeUninitialize(pInstance->instanceID);
}
}
LeaveCriticalSection(&WDML_CritSect);
}
/******************************************************************
* WDML_InvokeCallback
*
*
*/
HDDEDATA WDML_InvokeCallback(WDML_INSTANCE* pInstance, UINT uType, UINT uFmt, HCONV hConv,
HSZ hsz1, HSZ hsz2, HDDEDATA hdata,
DWORD dwData1, DWORD dwData2)
{
HDDEDATA ret;
if (pInstance == NULL)
return (HDDEDATA)0;
TRACE("invoking CB%d[%08lx] (%u %u %08lx 0x%x 0x%x %u %lu %lu)\n",
pInstance->win16 ? 16 : 32, (DWORD)pInstance->callback, uType, uFmt,
(DWORD)hConv, hsz1, hsz2, hdata, dwData1, dwData2);
if (pInstance->win16)
{
ret = WDML_InvokeCallback16(pInstance->callback, uType, uFmt, hConv,
hsz1, hsz2, hdata, dwData1, dwData2);
}
else
{
ret = pInstance->callback(uType, uFmt, hConv, hsz1, hsz2, hdata, dwData1, dwData2);
}
TRACE("done => %08lx\n", (DWORD)ret);
return ret;
}
/*****************************************************************************
* WDML_GetInstance
*
* generic routine to return a pointer to the relevant DDE_HANDLE_ENTRY
* for an instance Id, or NULL if the entry does not exist
*
*/
WDML_INSTANCE* WDML_GetInstance(DWORD instId)
{
WDML_INSTANCE* pInstance;
for (pInstance = WDML_InstanceList; pInstance != NULL; pInstance = pInstance->next)
{
if (pInstance->instanceID == instId)
{
if (GetCurrentThreadId() != pInstance->threadID)
{
FIXME("Tried to get instance from wrong thread\n");
continue;
}
return pInstance;
}
}
TRACE("Instance entry missing\n");
return NULL;
}
/******************************************************************
* WDML_GetInstanceFromWnd
*
*
*/
WDML_INSTANCE* WDML_GetInstanceFromWnd(HWND hWnd)
{
return (WDML_INSTANCE*)GetWindowLongA(hWnd, GWL_WDML_INSTANCE);
}
/******************************************************************************
* DdeGetLastError [USER32.@] Gets most recent error code
*
* PARAMS
* idInst [I] Instance identifier
*
* RETURNS
* Last error code
*/
UINT WINAPI DdeGetLastError(DWORD idInst)
{
DWORD error_code;
WDML_INSTANCE* pInstance;
FIXME("(%ld): error reporting is weakly implemented\n", idInst);
EnterCriticalSection(&WDML_CritSect);
/* First check instance
*/
pInstance = WDML_GetInstance(idInst);
if (pInstance == NULL)
{
error_code = DMLERR_DLL_NOT_INITIALIZED;
}
else
{
error_code = pInstance->lastError;
pInstance->lastError = 0;
}
LeaveCriticalSection(&WDML_CritSect);
return error_code;
}
/* ================================================================
*
* String management
*
* ================================================================ */
/******************************************************************
* WDML_FindNode
*
*
*/
static HSZNode* WDML_FindNode(WDML_INSTANCE* pInstance, HSZ hsz)
{
HSZNode* pNode;
if (pInstance == NULL) return NULL;
for (pNode = pInstance->nodeList; pNode != NULL; pNode = pNode->next)
{
if (pNode->hsz == hsz) break;
}
if (!pNode) WARN("HSZ 0x%x not found\n", hsz);
return pNode;
}
/******************************************************************
* WDML_MakeAtomFromHsz
*
* Creates a global atom from an existing HSZ
* Generally used before sending an HSZ as an atom to a remote app
*/
ATOM WDML_MakeAtomFromHsz(HSZ hsz)
{
WCHAR nameBuffer[MAX_BUFFER_LEN];
if (GetAtomNameW((ATOM)hsz, nameBuffer, MAX_BUFFER_LEN))
return GlobalAddAtomW(nameBuffer);
WARN("HSZ 0x%x not found\n", hsz);
return 0;
}
/******************************************************************
* WDML_MakeHszFromAtom
*
* Creates a HSZ from an existing global atom
* Generally used while receiving a global atom and transforming it
* into an HSZ
*/
HSZ WDML_MakeHszFromAtom(WDML_INSTANCE* pInstance, ATOM atom)
{
WCHAR nameBuffer[MAX_BUFFER_LEN];
if (!atom) return (HSZ)0;
if (GlobalGetAtomNameW(atom, nameBuffer, MAX_BUFFER_LEN))
{
TRACE("%x => %s\n", atom, debugstr_w(nameBuffer));
return DdeCreateStringHandleW(pInstance->instanceID, nameBuffer, CP_WINUNICODE);
}
WARN("ATOM 0x%x not found\n", atom);
return 0;
}
/******************************************************************
* WDML_IncHSZ
*
*
*/
BOOL WDML_IncHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
{
HSZNode* pNode;
pNode = WDML_FindNode(pInstance, hsz);
if (!pNode) return FALSE;
pNode->refCount++;
return TRUE;
}
/******************************************************************************
* WDML_DecHSZ (INTERNAL)
*
* Decrease the ref count of an HSZ. If it reaches 0, the node is removed from the list
* of HSZ nodes
* Returns -1 is the HSZ isn't found, otherwise it's the current (after --) of the ref count
*/
BOOL WDML_DecHSZ(WDML_INSTANCE* pInstance, HSZ hsz)
{
HSZNode* pPrev = NULL;
HSZNode* pCurrent;
for (pCurrent = pInstance->nodeList; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
{
/* If we found the node we were looking for and its ref count is one,
* we can remove it
*/
if (pCurrent->hsz == hsz)
{
if (--pCurrent->refCount == 0)
{
if (pCurrent == pInstance->nodeList)
{
pInstance->nodeList = pCurrent->next;
}
else
{
pPrev->next = pCurrent->next;
}
HeapFree(GetProcessHeap(), 0, pCurrent);
DeleteAtom((ATOM)hsz);
}
return TRUE;
}
}
WARN("HSZ 0x%x not found\n", hsz);
return FALSE;
}
/******************************************************************************
* WDML_FreeAllHSZ (INTERNAL)
*
* Frees up all the strings still allocated in the list and
* remove all the nodes from the list of HSZ nodes.
*/
void WDML_FreeAllHSZ(WDML_INSTANCE* pInstance)
{
/* Free any strings created in this instance.
*/
while (pInstance->nodeList != NULL)
{
DdeFreeStringHandle(pInstance->instanceID, pInstance->nodeList->hsz);
}
}
/******************************************************************************
* InsertHSZNode (INTERNAL)
*
* Insert a node to the head of the list.
*/
static void WDML_InsertHSZNode(WDML_INSTANCE* pInstance, HSZ hsz)
{
if (hsz != 0)
{
HSZNode* pNew = NULL;
/* Create a new node for this HSZ.
*/
pNew = (HSZNode*)HeapAlloc(GetProcessHeap(), 0, sizeof(HSZNode));
if (pNew != NULL)
{
pNew->hsz = hsz;
pNew->next = pInstance->nodeList;
pNew->refCount = 1;
pInstance->nodeList = pNew;
}
else
{
ERR("Primary HSZ Node allocation failed - out of memory\n");
}
}
}
/******************************************************************
* WDML_QueryString
*
*
*/
static int WDML_QueryString(WDML_INSTANCE* pInstance, HSZ hsz, LPVOID ptr, DWORD cchMax,
int codepage)
{
WCHAR pString[MAX_BUFFER_LEN];
int ret;
/* If psz is null, we have to return only the length
* of the string.
*/
if (ptr == NULL)
{
ptr = pString;
cchMax = MAX_BUFFER_LEN;
}
switch (codepage)
{
case CP_WINANSI:
ret = GetAtomNameA((ATOM)hsz, ptr, cchMax);
break;
case CP_WINUNICODE:
ret = GetAtomNameW((ATOM)hsz, ptr, cchMax);
default:
ERR("Unknown code page %d\n", codepage);
ret = 0;
}
return ret;
}
/*****************************************************************
* DdeQueryStringA [USER32.@]
*/
DWORD WINAPI DdeQueryStringA(DWORD idInst, HSZ hsz, LPSTR psz, DWORD cchMax, INT iCodePage)
{
DWORD ret = 0;
WDML_INSTANCE* pInstance;
TRACE("(%ld, 0x%x, %p, %ld, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
EnterCriticalSection(&WDML_CritSect);
/* First check instance
*/
pInstance = WDML_GetInstance(idInst);
if (pInstance != NULL)
{
if (iCodePage == 0) iCodePage = CP_WINANSI;
ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
}
LeaveCriticalSection(&WDML_CritSect);
TRACE("returning %s\n", debugstr_a(psz));
return ret;
}
/*****************************************************************
* DdeQueryStringW [USER32.@]
*/
DWORD WINAPI DdeQueryStringW(DWORD idInst, HSZ hsz, LPWSTR psz, DWORD cchMax, INT iCodePage)
{
DWORD ret = 0;
WDML_INSTANCE* pInstance;
TRACE("(%ld, 0x%x, %p, %ld, %d)\n", idInst, hsz, psz, cchMax, iCodePage);
EnterCriticalSection(&WDML_CritSect);
/* First check instance
*/
pInstance = WDML_GetInstance(idInst);
if (pInstance != NULL)
{
if (iCodePage == 0) iCodePage = CP_WINUNICODE;
ret = WDML_QueryString(pInstance, hsz, psz, cchMax, iCodePage);
}
LeaveCriticalSection(&WDML_CritSect);
TRACE("returning %s\n", debugstr_w(psz));
return ret;
}
/******************************************************************
* DML_CreateString
*
*
*/
static HSZ WDML_CreateString(WDML_INSTANCE* pInstance, LPCVOID ptr, int codepage)
{
HSZ hsz;
switch (codepage)
{
case CP_WINANSI:
hsz = (HSZ)AddAtomA(ptr);
TRACE("added atom %s with HSZ 0x%x, \n", debugstr_a(ptr), hsz);
break;
case CP_WINUNICODE:
hsz = (HSZ)AddAtomW(ptr);
TRACE("added atom %s with HSZ 0x%x, \n", debugstr_w(ptr), hsz);
break;
default:
ERR("Unknown code page %d\n", codepage);
return 0;
}
WDML_InsertHSZNode(pInstance, hsz);
return hsz;
}
/*****************************************************************
* DdeCreateStringHandleA [USER32.@]
*
* RETURNS
* Success: String handle
* Failure: 0
*/
HSZ WINAPI DdeCreateStringHandleA(DWORD idInst, LPCSTR psz, INT codepage)
{
HSZ hsz = 0;
WDML_INSTANCE* pInstance;
TRACE("(%ld,%p,%d)\n", idInst, psz, codepage);
EnterCriticalSection(&WDML_CritSect);
pInstance = WDML_GetInstance(idInst);
if (pInstance)
{
if (codepage == 0) codepage = CP_WINANSI;
hsz = WDML_CreateString(pInstance, psz, codepage);
}
LeaveCriticalSection(&WDML_CritSect);
return hsz;
}
/******************************************************************************
* DdeCreateStringHandleW [USER32.@] Creates handle to identify string
*
* PARAMS
* idInst [I] Instance identifier
* psz [I] Pointer to string
* codepage [I] Code page identifier
* RETURNS
* Success: String handle
* Failure: 0
*/
HSZ WINAPI DdeCreateStringHandleW(DWORD idInst, LPCWSTR psz, INT codepage)
{
WDML_INSTANCE* pInstance;
HSZ hsz = 0;
TRACE("(%ld,%p,%d)\n", idInst, 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;
}
/*****************************************************************
* DdeFreeStringHandle (USER32.@)
* RETURNS: success: nonzero
* fail: zero
*/
BOOL WINAPI DdeFreeStringHandle(DWORD idInst, HSZ hsz)
{
WDML_INSTANCE* pInstance;
BOOL ret = FALSE;
TRACE("(%ld,0x%x): \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;
}
/*****************************************************************
* DdeKeepStringHandle (USER32.@)
*
* RETURNS: success: nonzero
* fail: zero
*/
BOOL WINAPI DdeKeepStringHandle(DWORD idInst, HSZ hsz)
{
WDML_INSTANCE* pInstance;
BOOL ret = FALSE;
TRACE("(%ld,0x%x): \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;
}
/*****************************************************************
* DdeCmpStringHandles (USER32.@)
*
* Compares the value of two string handles. This comparison is
* not case sensitive.
*
* Returns:
* -1 The value of hsz1 is zero or less than hsz2
* 0 The values of hsz 1 and 2 are the same or both zero.
* 1 The value of hsz2 is zero of less than hsz1
*/
INT WINAPI DdeCmpStringHandles(HSZ hsz1, HSZ hsz2)
{
WCHAR psz1[MAX_BUFFER_LEN];
WCHAR psz2[MAX_BUFFER_LEN];
int ret = 0;
int ret1, ret2;
ret1 = GetAtomNameW((ATOM)hsz1, psz1, MAX_BUFFER_LEN);
ret2 = GetAtomNameW((ATOM)hsz2, psz2, MAX_BUFFER_LEN);
TRACE("(%x<%s> %x<%s>);\n", hsz1, debugstr_w(psz1), hsz2, debugstr_w(psz2));
/* Make sure we found both strings. */
if (ret1 == 0 && ret2 == 0)
{
/* If both are not found, return both "zero strings". */
ret = 0;
}
else if (ret1 == 0)
{
/* If hsz1 is a not found, return hsz1 is "zero string". */
ret = -1;
}
else if (ret2 == 0)
{
/* If hsz2 is a not found, return hsz2 is "zero string". */
ret = 1;
}
else
{
/* Compare the two strings we got (case insensitive). */
ret = lstrcmpiW(psz1, psz2);
/* Since strcmp returns any number smaller than
* 0 when the first string is found to be less than
* the second one we must make sure we are returning
* the proper values.
*/
if (ret < 0)
{
ret = -1;
}
else if (ret > 0)
{
ret = 1;
}
}
return ret;
}
/* ================================================================
*
* Data handle management
*
* ================================================================ */
/*****************************************************************
* DdeCreateDataHandle (USER32.@)
*/
HDDEDATA WINAPI DdeCreateDataHandle(DWORD idInst, LPBYTE pSrc, DWORD cb, DWORD cbOff,
HSZ hszItem, UINT wFmt, UINT afCmd)
{
/* For now, we ignore idInst, hszItem.
* The purpose of these arguments still need to be investigated.
*/
HGLOBAL hMem;
LPBYTE pByte;
DDE_DATAHANDLE_HEAD* pDdh;
TRACE("(%ld,%p,%ld,%ld,0x%lx,%d,%d)\n",
idInst, pSrc, cb, cbOff, (DWORD)hszItem, wFmt, afCmd);
if (afCmd != 0 && afCmd != HDATA_APPOWNED)
return 0;
/* we use the first 4 bytes to store the size */
if (!(hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, cb + sizeof(DDE_DATAHANDLE_HEAD))))
{
ERR("GlobalAlloc failed\n");
return 0;
}
pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock(hMem);
if (!pDdh)
{
GlobalFree(hMem);
return 0;
}
pDdh->cfFormat = wFmt;
pDdh->bAppOwned = (afCmd == HDATA_APPOWNED);
pByte = (LPBYTE)(pDdh + 1);
if (pSrc)
{
memcpy(pByte, pSrc + cbOff, cb);
}
GlobalUnlock(hMem);
return (HDDEDATA)hMem;
}
/*****************************************************************
*
* DdeAddData (USER32.@)
*/
HDDEDATA WINAPI DdeAddData(HDDEDATA hData, LPBYTE pSrc, DWORD cb, DWORD cbOff)
{
DWORD old_sz, new_sz;
LPBYTE pDst;
pDst = DdeAccessData(hData, &old_sz);
if (!pDst) return 0;
new_sz = cb + cbOff;
if (new_sz > old_sz)
{
DdeUnaccessData(hData);
hData = GlobalReAlloc((HGLOBAL)hData, new_sz + sizeof(DDE_DATAHANDLE_HEAD),
GMEM_MOVEABLE | GMEM_DDESHARE);
pDst = DdeAccessData(hData, &old_sz);
}
if (!pDst) return 0;
memcpy(pDst + cbOff, pSrc, cb);
DdeUnaccessData(hData);
return hData;
}
/******************************************************************************
* DdeGetData [USER32.@] Copies data from DDE object to local buffer
*
*
* PARAMS
* hData [I] Handle to DDE object
* pDst [I] Pointer to destination buffer
* cbMax [I] Amount of data to copy
* cbOff [I] Offset to beginning of data
*
* RETURNS
* Size of memory object associated with handle
*/
DWORD WINAPI DdeGetData(HDDEDATA hData, LPBYTE pDst, DWORD cbMax, DWORD cbOff)
{
DWORD dwSize, dwRet;
LPBYTE pByte;
TRACE("(%08lx,%p,%ld,%ld)\n",(DWORD)hData,pDst,cbMax,cbOff);
pByte = DdeAccessData(hData, &dwSize);
if (pByte)
{
if (cbOff + cbMax < dwSize)
{
dwRet = cbMax;
}
else if (cbOff < dwSize)
{
dwRet = dwSize - cbOff;
}
else
{
dwRet = 0;
}
if (pDst && dwRet != 0)
{
memcpy(pDst, pByte + cbOff, dwRet);
}
DdeUnaccessData(hData);
}
else
{
dwRet = 0;
}
return dwRet;
}
/*****************************************************************
* DdeAccessData (USER32.@)
*/
LPBYTE WINAPI DdeAccessData(HDDEDATA hData, LPDWORD pcbDataSize)
{
HGLOBAL hMem = (HGLOBAL)hData;
DDE_DATAHANDLE_HEAD* pDdh;
TRACE("(%08lx,%p)\n", (DWORD)hData, pcbDataSize);
pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock(hMem);
if (pDdh == NULL)
{
ERR("Failed on GlobalLock(%04x)\n", hMem);
return 0;
}
if (pcbDataSize != NULL)
{
*pcbDataSize = GlobalSize(hMem) - sizeof(DDE_DATAHANDLE_HEAD);
}
return (LPBYTE)(pDdh + 1);
}
/*****************************************************************
* DdeUnaccessData (USER32.@)
*/
BOOL WINAPI DdeUnaccessData(HDDEDATA hData)
{
HGLOBAL hMem = (HGLOBAL)hData;
TRACE("(0x%lx)\n", (DWORD)hData);
GlobalUnlock(hMem);
return TRUE;
}
/*****************************************************************
* DdeFreeDataHandle (USER32.@)
*/
BOOL WINAPI DdeFreeDataHandle(HDDEDATA hData)
{
return GlobalFree((HGLOBAL)hData) == 0;
}
/******************************************************************
* WDML_IsAppOwned
*
*
*/
BOOL WDML_IsAppOwned(HDDEDATA hData)
{
DDE_DATAHANDLE_HEAD* pDdh;
BOOL ret = FALSE;
pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock((HGLOBAL)hData);
if (pDdh != NULL)
{
ret = pDdh->bAppOwned;
GlobalUnlock((HGLOBAL)hData);
}
return ret;
}
/* ================================================================
*
* Global <=> Data handle management
*
* ================================================================ */
/* Note: we use a DDEDATA, but layout of DDEDATA, DDEADVISE and DDEPOKE structures is similar:
* offset size
* (bytes) (bits) comment
* 0 16 bit fields for options (release, ackreq, response...)
* 2 16 clipboard format
* 4 ? data to be used
*/
HDDEDATA WDML_Global2DataHandle(HGLOBAL hMem, WINE_DDEHEAD* p)
{
DDEDATA* pDd;
HDDEDATA ret = 0;
DWORD size;
if (hMem)
{
pDd = GlobalLock(hMem);
size = GlobalSize(hMem) - sizeof(WINE_DDEHEAD);
if (pDd)
{
if (p) memcpy(p, pDd, sizeof(WINE_DDEHEAD));
switch (pDd->cfFormat)
{
default:
FIXME("Unsupported format (%d) for data... assuming raw information\n",
pDd->cfFormat);
/* fall thru */
case 0:
case CF_TEXT:
ret = DdeCreateDataHandle(0, pDd->Value, size, 0, 0, pDd->cfFormat, 0);
break;
case CF_BITMAP:
if (size >= sizeof(BITMAP))
{
BITMAP* bmp = (BITMAP*)pDd->Value;
int count = bmp->bmWidthBytes * bmp->bmHeight * bmp->bmPlanes;
if (size >= sizeof(BITMAP) + count)
{
HBITMAP hbmp;
if ((hbmp = CreateBitmap(bmp->bmWidth, bmp->bmHeight,
bmp->bmPlanes, bmp->bmBitsPixel,
pDd->Value + sizeof(BITMAP))))
{
ret = DdeCreateDataHandle(0, (LPBYTE)&hbmp, sizeof(hbmp),
0, 0, CF_BITMAP, 0);
}
else ERR("Can't create bmp\n");
}
else
{
ERR("Wrong count: %lu / %d\n", size, sizeof(BITMAP) + count);
}
} else ERR("No bitmap header\n");
break;
}
GlobalUnlock(hMem);
}
}
return ret;
}
/******************************************************************
* WDML_DataHandle2Global
*
*
*/
HGLOBAL WDML_DataHandle2Global(HDDEDATA hDdeData, BOOL fResponse, BOOL fRelease,
BOOL fDeferUpd, BOOL fAckReq)
{
DDE_DATAHANDLE_HEAD* pDdh;
DWORD dwSize;
HGLOBAL hMem = 0;
dwSize = GlobalSize((HGLOBAL)hDdeData) - sizeof(DDE_DATAHANDLE_HEAD);
pDdh = (DDE_DATAHANDLE_HEAD*)GlobalLock((HGLOBAL)hDdeData);
if (dwSize && pDdh)
{
WINE_DDEHEAD* wdh = NULL;
switch (pDdh->cfFormat)
{
default:
FIXME("Unsupported format (%d) for data... passing raw information\n", pDdh->cfFormat);
/* fall thru */
case 0:
case CF_TEXT:
hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, sizeof(WINE_DDEHEAD) + dwSize);
if (hMem && (wdh = GlobalLock(hMem)))
{
memcpy(wdh + 1, pDdh + 1, dwSize);
}
break;
case CF_BITMAP:
if (dwSize >= sizeof(HBITMAP))
{
BITMAP bmp;
DWORD count;
HBITMAP hbmp = *(HBITMAP*)(pDdh + 1);
if (GetObjectA(hbmp, sizeof(bmp), &bmp))
{
count = bmp.bmWidthBytes * bmp.bmHeight;
hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE,
sizeof(WINE_DDEHEAD) + sizeof(bmp) + count);
if (hMem && (wdh = GlobalLock(hMem)))
{
memcpy(wdh + 1, &bmp, sizeof(bmp));
GetBitmapBits(hbmp, count, ((char*)(wdh + 1)) + sizeof(bmp));
}
}
}
break;
}
if (wdh)
{
wdh->fResponse = fResponse;
wdh->fRelease = fRelease;
wdh->fDeferUpd = fDeferUpd;
wdh->fAckReq = fAckReq;
wdh->cfFormat = pDdh->cfFormat;
GlobalUnlock(hMem);
}
GlobalUnlock((HGLOBAL)hDdeData);
}
return hMem;
}
/* ================================================================
*
* Server management
*
* ================================================================ */
/******************************************************************
* WDML_AddServer
*
*
*/
WDML_SERVER* WDML_AddServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
{
WDML_SERVER* pServer;
char buf1[256];
char buf2[256];
pServer = (WDML_SERVER*)HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_SERVER));
if (pServer == NULL) return NULL;
WDML_IncHSZ(pInstance, pServer->hszService = hszService);
DdeQueryStringA(pInstance->instanceID, hszService, buf1, sizeof(buf1), CP_WINANSI);
snprintf(buf2, sizeof(buf2), "%s(0x%08lx)", buf1, GetCurrentProcessId());
pServer->hszServiceSpec = DdeCreateStringHandleA(pInstance->instanceID, buf2, CP_WINANSI);
pServer->atomService = WDML_MakeAtomFromHsz(pServer->hszService);
pServer->atomServiceSpec = WDML_MakeAtomFromHsz(pServer->hszServiceSpec);
pServer->filterOn = TRUE;
pServer->next = pInstance->servers;
pInstance->servers = pServer;
return pServer;
}
/******************************************************************
* WDML_RemoveServer
*
*
*/
void WDML_RemoveServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
{
WDML_SERVER* pPrev = NULL;
WDML_SERVER* pServer = NULL;
WDML_CONV* pConv;
WDML_CONV* pConvNext;
pServer = pInstance->servers;
while (pServer != NULL)
{
if (DdeCmpStringHandles(pServer->hszService, hszService) == 0)
{
WDML_BroadcastDDEWindows(WDML_szEventClass, WM_WDML_UNREGISTER,
pServer->atomService, pServer->atomServiceSpec);
/* terminate all conversations for given topic */
for (pConv = pInstance->convs[WDML_SERVER_SIDE]; pConv != NULL; pConv = pConvNext)
{
pConvNext = pConv->next;
if (DdeCmpStringHandles(pConv->hszService, hszService) == 0)
{
WDML_RemoveConv(pConv, WDML_SERVER_SIDE);
/* don't care about return code (whether client window is present or not) */
PostMessageA(pConv->hwndClient, WM_DDE_TERMINATE, (WPARAM)pConv->hwndServer, 0L);
}
}
if (pServer == pInstance->servers)
{
pInstance->servers = pServer->next;
}
else
{
pPrev->next = pServer->next;
}
DestroyWindow(pServer->hwndServer);
WDML_DecHSZ(pInstance, pServer->hszServiceSpec);
WDML_DecHSZ(pInstance, pServer->hszService);
GlobalDeleteAtom(pServer->atomService);
GlobalDeleteAtom(pServer->atomServiceSpec);
HeapFree(GetProcessHeap(), 0, pServer);
break;
}
pPrev = pServer;
pServer = pServer->next;
}
}
/*****************************************************************************
* WDML_FindServer
*
* generic routine to return a pointer to the relevant ServiceNode
* for a given service name, or NULL if the entry does not exist
*
*/
WDML_SERVER* WDML_FindServer(WDML_INSTANCE* pInstance, HSZ hszService, HSZ hszTopic)
{
WDML_SERVER* pServer;
for (pServer = pInstance->servers; pServer != NULL; pServer = pServer->next)
{
if (hszService == pServer->hszService)
{
return pServer;
}
}
TRACE("Service name missing\n");
return NULL;
}
/* ================================================================
*
* Conversation management
*
* ================================================================ */
/******************************************************************
* WDML_AddConv
*
*
*/
WDML_CONV* WDML_AddConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
HSZ hszService, HSZ hszTopic, HWND hwndClient, HWND hwndServer)
{
WDML_CONV* pConv;
/* no converstation yet, add it */
pConv = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_CONV));
if (!pConv) return NULL;
pConv->instance = pInstance;
WDML_IncHSZ(pInstance, pConv->hszService = hszService);
WDML_IncHSZ(pInstance, pConv->hszTopic = hszTopic);
pConv->hwndServer = hwndServer;
pConv->hwndClient = hwndClient;
pConv->transactions = NULL;
pConv->hUser = 0;
pConv->wStatus = (side == WDML_CLIENT_SIDE) ? ST_CLIENT : 0L;
/* check if both side of the conversation are of the same instance */
if (GetWindowThreadProcessId(hwndClient, NULL) == GetWindowThreadProcessId(hwndServer, NULL) &&
WDML_GetInstanceFromWnd(hwndClient) == WDML_GetInstanceFromWnd(hwndServer))
{
pConv->wStatus |= ST_ISSELF;
}
pConv->wConvst = XST_NULL;
pConv->next = pInstance->convs[side];
pInstance->convs[side] = pConv;
return pConv;
}
/******************************************************************
* WDML_FindConv
*
*
*/
WDML_CONV* WDML_FindConv(WDML_INSTANCE* pInstance, WDML_SIDE side,
HSZ hszService, HSZ hszTopic)
{
WDML_CONV* pCurrent = NULL;
for (pCurrent = pInstance->convs[side]; pCurrent != NULL; pCurrent = pCurrent->next)
{
if (DdeCmpStringHandles(pCurrent->hszService, hszService) == 0 &&
DdeCmpStringHandles(pCurrent->hszTopic, hszTopic) == 0)
{
return pCurrent;
}
}
return NULL;
}
/******************************************************************
* WDML_RemoveConv
*
*
*/
void WDML_RemoveConv(WDML_CONV* pRef, WDML_SIDE side)
{
WDML_CONV* pPrev = NULL;
WDML_CONV* pCurrent;
WDML_XACT* pXAct;
WDML_XACT* pXActNext;
HWND hWnd;
if (!pRef)
return;
/* remove any pending transaction */
for (pXAct = pRef->transactions; pXAct != NULL; pXAct = pXActNext)
{
pXActNext = pXAct->next;
WDML_FreeTransaction(pRef->instance, pXAct, TRUE);
}
WDML_RemoveAllLinks(pRef->instance, pRef, side);
/* FIXME: should we keep the window around ? it seems so (at least on client side
* to let QueryConvInfo work after conv termination, but also to implement
* DdeReconnect...
*/
/* destroy conversation window, but first remove pConv from hWnd.
* this would help the wndProc do appropriate handling upon a WM_DESTROY message
*/
hWnd = (side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer;
SetWindowLongA(hWnd, GWL_WDML_CONVERSATION, 0);
DestroyWindow((side == WDML_CLIENT_SIDE) ? pRef->hwndClient : pRef->hwndServer);
WDML_DecHSZ(pRef->instance, pRef->hszService);
WDML_DecHSZ(pRef->instance, pRef->hszTopic);
for (pCurrent = pRef->instance->convs[side]; pCurrent != NULL; pCurrent = (pPrev = pCurrent)->next)
{
if (pCurrent == pRef)
{
if (pCurrent == pRef->instance->convs[side])
{
pRef->instance->convs[side] = pCurrent->next;
}
else
{
pPrev->next = pCurrent->next;
}
HeapFree(GetProcessHeap(), 0, pCurrent);
break;
}
}
}
/*****************************************************************
* DdeEnableCallback (USER32.@)
*/
BOOL WINAPI DdeEnableCallback(DWORD idInst, HCONV hConv, UINT wCmd)
{
FIXME("(%ld, 0x%x, %d) stub\n", idInst, hConv, wCmd);
return 0;
}
/******************************************************************
* WDML_GetConv
*
*
*/
WDML_CONV* WDML_GetConv(HCONV hConv, BOOL checkConnected)
{
WDML_CONV* pConv = (WDML_CONV*)hConv;
/* FIXME: should do better checking */
if (checkConnected && !(pConv->wStatus & ST_CONNECTED))
{
FIXME("found conv but ain't connected\n");
return NULL;
}
if (GetCurrentThreadId() != pConv->instance->threadID)
{
FIXME("wrong thread ID\n");
return NULL;
}
return pConv;
}
/******************************************************************
* WDML_GetConvFromWnd
*
*
*/
WDML_CONV* WDML_GetConvFromWnd(HWND hWnd)
{
return (WDML_CONV*)GetWindowLongA(hWnd, GWL_WDML_CONVERSATION);
}
/******************************************************************
* WDML_PostAck
*
*
*/
BOOL WDML_PostAck(WDML_CONV* pConv, WDML_SIDE side, WORD appRetCode,
BOOL fBusy, BOOL fAck, UINT pmt, LPARAM lParam, UINT oldMsg)
{
DDEACK ddeAck;
HWND from, to;
if (side == WDML_SERVER_SIDE)
{
from = pConv->hwndServer;
to = pConv->hwndClient;
}
else
{
to = pConv->hwndServer;
from = pConv->hwndClient;
}
ddeAck.bAppReturnCode = appRetCode;
ddeAck.reserved = 0;
ddeAck.fBusy = fBusy;
ddeAck.fAck = fAck;
TRACE("Posting a %s ack\n", ddeAck.fAck ? "positive" : "negative");
lParam = (lParam) ? ReuseDDElParam(lParam, oldMsg, WM_DDE_ACK, *(WORD*)&ddeAck, pmt) :
PackDDElParam(WM_DDE_ACK, *(WORD*)&ddeAck, pmt);
if (!PostMessageA(to, WM_DDE_ACK, (WPARAM)from, lParam))
{
pConv->wStatus &= ~ST_CONNECTED;
FreeDDElParam(WM_DDE_ACK, lParam);
return FALSE;
}
return TRUE;
}
/*****************************************************************
* DdeSetUserHandle (USER32.@)
*/
BOOL WINAPI DdeSetUserHandle(HCONV hConv, DWORD id, DWORD hUser)
{
WDML_CONV* pConv;
BOOL ret = TRUE;
EnterCriticalSection(&WDML_CritSect);
pConv = WDML_GetConv(hConv, FALSE);
if (pConv == NULL)
{
ret = FALSE;
goto theError;
}
if (id == QID_SYNC)
{
pConv->hUser = hUser;
}
else
{
WDML_XACT* pXAct;
pXAct = WDML_FindTransaction(pConv, id);
if (pXAct)
{
pXAct->hUser = hUser;
}
else
{
pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
ret = FALSE;
}
}
theError:
LeaveCriticalSection(&WDML_CritSect);
return ret;
}
/******************************************************************
* WDML_GetLocalConvInfo
*
*
*/
static BOOL WDML_GetLocalConvInfo(WDML_CONV* pConv, CONVINFO* ci, DWORD id)
{
BOOL ret = TRUE;
WDML_LINK* pLink;
WDML_SIDE side;
ci->hConvPartner = (pConv->wStatus & ST_ISLOCAL) ? (HCONV)((DWORD)pConv | 1) : 0;
ci->hszSvcPartner = pConv->hszService;
ci->hszServiceReq = pConv->hszService; /* FIXME: they shouldn't be the same, should they ? */
ci->hszTopic = pConv->hszTopic;
ci->wStatus = pConv->wStatus;
side = (pConv->wStatus & ST_CLIENT) ? WDML_CLIENT_SIDE : WDML_SERVER_SIDE;
for (pLink = pConv->instance->links[side]; pLink != NULL; pLink = pLink->next)
{
if (pLink->hConv == (HCONV)pConv)
{
ci->wStatus |= ST_ADVISE;
break;
}
}
/* FIXME: non handled status flags:
ST_BLOCKED
ST_BLOCKNEXT
ST_INLIST
*/
ci->wConvst = pConv->wConvst; /* FIXME */
ci->wLastError = 0; /* FIXME: note it's not the instance last error */
ci->hConvList = 0;
ci->ConvCtxt = pConv->convContext;
if (ci->wStatus & ST_CLIENT)
{
ci->hwnd = pConv->hwndClient;
ci->hwndPartner = pConv->hwndServer;
}
else
{
ci->hwnd = pConv->hwndServer;
ci->hwndPartner = pConv->hwndClient;
}
if (id == QID_SYNC)
{
ci->hUser = pConv->hUser;
ci->hszItem = 0;
ci->wFmt = 0;
ci->wType = 0;
}
else
{
WDML_XACT* pXAct;
pXAct = WDML_FindTransaction(pConv, id);
if (pXAct)
{
ci->hUser = pXAct->hUser;
ci->hszItem = pXAct->hszItem;
ci->wFmt = pXAct->wFmt;
ci->wType = pXAct->wType;
}
else
{
ret = 0;
pConv->instance->lastError = DMLERR_UNFOUND_QUEUE_ID;
}
}
return ret;
}
/******************************************************************
* DdeQueryConvInfo (USER32.@)
*
*/
UINT WINAPI DdeQueryConvInfo(HCONV hConv, DWORD id, LPCONVINFO lpConvInfo)
{
UINT ret = lpConvInfo->cb;
CONVINFO ci;
WDML_CONV* pConv;
EnterCriticalSection(&WDML_CritSect);
pConv = WDML_GetConv(hConv, FALSE);
if (pConv != NULL && !WDML_GetLocalConvInfo(pConv, &ci, id))
{
ret = 0;
}
else if ((DWORD)hConv & 1)
{
pConv = WDML_GetConv((DWORD)hConv & ~1, FALSE);
if (pConv != NULL)
{
FIXME("Request on remote conversation information is not implemented yet\n");
ret = 0;
}
}
LeaveCriticalSection(&WDML_CritSect);
if (ret != 0)
memcpy(lpConvInfo, &ci, min((size_t)lpConvInfo->cb, sizeof(ci)));
return ret;
}
/* ================================================================
*
* Link (hot & warm) management
*
* ================================================================ */
/******************************************************************
* WDML_AddLink
*
*
*/
void WDML_AddLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
UINT wType, HSZ hszItem, UINT wFmt)
{
WDML_LINK* pLink;
pLink = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_LINK));
if (pLink == NULL)
{
ERR("OOM\n");
return;
}
pLink->hConv = hConv;
pLink->transactionType = wType;
WDML_IncHSZ(pInstance, pLink->hszItem = hszItem);
pLink->uFmt = wFmt;
pLink->next = pInstance->links[side];
pInstance->links[side] = pLink;
}
/******************************************************************
* WDML_RemoveLink
*
*
*/
void WDML_RemoveLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
HSZ hszItem, UINT uFmt)
{
WDML_LINK* pPrev = NULL;
WDML_LINK* pCurrent = NULL;
pCurrent = pInstance->links[side];
while (pCurrent != NULL)
{
if (pCurrent->hConv == hConv &&
DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
pCurrent->uFmt == uFmt)
{
if (pCurrent == pInstance->links[side])
{
pInstance->links[side] = pCurrent->next;
}
else
{
pPrev->next = pCurrent->next;
}
WDML_DecHSZ(pInstance, pCurrent->hszItem);
HeapFree(GetProcessHeap(), 0, pCurrent);
break;
}
pPrev = pCurrent;
pCurrent = pCurrent->next;
}
}
/* this function is called to remove all links related to the conv.
It should be called from both client and server when terminating
the conversation.
*/
/******************************************************************
* WDML_RemoveAllLinks
*
*
*/
void WDML_RemoveAllLinks(WDML_INSTANCE* pInstance, WDML_CONV* pConv, WDML_SIDE side)
{
WDML_LINK* pPrev = NULL;
WDML_LINK* pCurrent = NULL;
WDML_LINK* pNext = NULL;
pCurrent = pInstance->links[side];
while (pCurrent != NULL)
{
if (pCurrent->hConv == (HCONV)pConv)
{
if (pCurrent == pInstance->links[side])
{
pInstance->links[side] = pCurrent->next;
pNext = pCurrent->next;
}
else
{
pPrev->next = pCurrent->next;
pNext = pCurrent->next;
}
WDML_DecHSZ(pInstance, pCurrent->hszItem);
HeapFree(GetProcessHeap(), 0, pCurrent);
pCurrent = NULL;
}
if (pCurrent)
{
pPrev = pCurrent;
pCurrent = pCurrent->next;
}
else
{
pCurrent = pNext;
}
}
}
/******************************************************************
* WDML_FindLink
*
*
*/
WDML_LINK* WDML_FindLink(WDML_INSTANCE* pInstance, HCONV hConv, WDML_SIDE side,
HSZ hszItem, BOOL use_fmt, UINT uFmt)
{
WDML_LINK* pCurrent = NULL;
for (pCurrent = pInstance->links[side]; pCurrent != NULL; pCurrent = pCurrent->next)
{
/* we don't need to check for transaction type as it can be altered */
if (pCurrent->hConv == hConv &&
DdeCmpStringHandles(pCurrent->hszItem, hszItem) == 0 &&
(!use_fmt || pCurrent->uFmt == uFmt))
{
break;
}
}
return pCurrent;
}
/* ================================================================
*
* Transaction management
*
* ================================================================ */
/******************************************************************
* WDML_AllocTransaction
*
* Alloc a transaction structure for handling the message ddeMsg
*/
WDML_XACT* WDML_AllocTransaction(WDML_INSTANCE* pInstance, UINT ddeMsg,
UINT wFmt, HSZ hszItem)
{
WDML_XACT* pXAct;
static WORD tid = 1; /* FIXME: wrap around */
pXAct = HeapAlloc(GetProcessHeap(), 0, sizeof(WDML_XACT));
if (!pXAct)
{
pInstance->lastError = DMLERR_MEMORY_ERROR;
return NULL;
}
pXAct->xActID = tid++;
pXAct->ddeMsg = ddeMsg;
pXAct->hDdeData = 0;
pXAct->hUser = 0;
pXAct->next = NULL;
pXAct->wType = 0;
pXAct->wFmt = wFmt;
if ((pXAct->hszItem = hszItem)) WDML_IncHSZ(pInstance, pXAct->hszItem);
pXAct->atom = 0;
pXAct->hMem = 0;
pXAct->lParam = 0;
return pXAct;
}
/******************************************************************
* WDML_QueueTransaction
*
* Adds a transaction to the list of transaction
*/
void WDML_QueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
{
WDML_XACT** pt;
/* advance to last in queue */
for (pt = &pConv->transactions; *pt != NULL; pt = &(*pt)->next);
*pt = pXAct;
}
/******************************************************************
* WDML_UnQueueTransaction
*
*
*/
BOOL WDML_UnQueueTransaction(WDML_CONV* pConv, WDML_XACT* pXAct)
{
WDML_XACT** pt;
for (pt = &pConv->transactions; *pt; pt = &(*pt)->next)
{
if (*pt == pXAct)
{
*pt = pXAct->next;
return TRUE;
}
}
return FALSE;
}
/******************************************************************
* WDML_FreeTransaction
*
*
*/
void WDML_FreeTransaction(WDML_INSTANCE* pInstance, WDML_XACT* pXAct, BOOL doFreePmt)
{
/* free pmt(s) in pXAct too. check against one for not deleting TRUE return values */
if (doFreePmt && (DWORD)pXAct->hMem > 1)
{
GlobalFree(pXAct->hMem);
}
if (pXAct->hszItem) WDML_DecHSZ(pInstance, pXAct->hszItem);
HeapFree(GetProcessHeap(), 0, pXAct);
}
/******************************************************************
* WDML_FindTransaction
*
*
*/
WDML_XACT* WDML_FindTransaction(WDML_CONV* pConv, DWORD tid)
{
WDML_XACT* pXAct;
tid = HIWORD(tid);
for (pXAct = pConv->transactions; pXAct; pXAct = pXAct->next)
{
if (pXAct->xActID == tid)
break;
}
return pXAct;
}
/* ================================================================
*
* Information broadcast across DDEML implementations
*
* ================================================================ */
struct tagWDML_BroadcastPmt
{
LPCSTR clsName;
UINT uMsg;
WPARAM wParam;
LPARAM lParam;
};
/******************************************************************
* WDML_BroadcastEnumProc
*
*
*/
static BOOL CALLBACK WDML_BroadcastEnumProc(HWND hWnd, LPARAM lParam)
{
struct tagWDML_BroadcastPmt* s = (struct tagWDML_BroadcastPmt*)lParam;
char buffer[128];
if (GetClassNameA(hWnd, buffer, sizeof(buffer)) > 0 &&
strcmp(buffer, s->clsName) == 0)
{
PostMessageA(hWnd, s->uMsg, s->wParam, s->lParam);
}
return TRUE;
}
/******************************************************************
* WDML_BroadcastDDEWindows
*
*
*/
void WDML_BroadcastDDEWindows(const char* clsName, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
struct tagWDML_BroadcastPmt s;
s.clsName = clsName;
s.uMsg = uMsg;
s.wParam = wParam;
s.lParam = lParam;
EnumWindows(WDML_BroadcastEnumProc, (LPARAM)&s);
}
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