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wine/dlls/ddeml.dll16/ddeml.c
Nikolay Sivov b22d4e4588 ddeml: Don't trash 'cb' field of structure returned by DdeQueryConvInfo16() (Coverity). 
Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
2015-11-23 23:35:13 +09:00

518 lines
15 KiB
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/*
* DDEML library
*
* Copyright 1997 Alexandre Julliard
* Copyright 1997 Len White
* Copyright 1999 Keith Matthews
* Copyright 2000 Corel
* Copyright 2001,2002,2009 Eric Pouech
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "wine/windef16.h"
#include "wine/winbase16.h"
#include "wownt32.h"
#include "dde.h"
#include "ddeml.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(ddeml);
typedef HDDEDATA (CALLBACK *PFNCALLBACK16)(UINT16,UINT16,HCONV,HSZ,HSZ,HDDEDATA,
DWORD,DWORD);
typedef struct
{
UINT16 cb;
UINT16 wFlags;
UINT16 wCountryID;
INT16 iCodePage;
DWORD dwLangID;
DWORD dwSecurity;
} CONVCONTEXT16, *LPCONVCONTEXT16;
typedef struct
{
DWORD cb;
DWORD hUser;
HCONV hConvPartner;
HSZ hszSvcPartner;
HSZ hszServiceReq;
HSZ hszTopic;
HSZ hszItem;
UINT16 wFmt;
UINT16 wType;
UINT16 wStatus;
UINT16 wConvst;
UINT16 wLastError;
HCONVLIST hConvList;
CONVCONTEXT16 ConvCtxt;
} CONVINFO16, *LPCONVINFO16;
static void map1632_conv_context(CONVCONTEXT* cc32, const CONVCONTEXT16* cc16)
{
cc32->cb = sizeof(*cc32);
cc32->wFlags = cc16->wFlags;
cc32->wCountryID = cc16->wCountryID;
cc32->iCodePage = cc16->iCodePage;
cc32->dwLangID = cc16->dwLangID;
cc32->dwSecurity = cc16->dwSecurity;
}
static void map3216_conv_context(CONVCONTEXT16* cc16, const CONVCONTEXT* cc32)
{
cc16->cb = sizeof(*cc16);
cc16->wFlags = cc32->wFlags;
cc16->wCountryID = cc32->wCountryID;
cc16->iCodePage = cc32->iCodePage;
cc16->dwLangID = cc32->dwLangID;
cc16->dwSecurity = cc32->dwSecurity;
}
/******************************************************************
* WDML_InvokeCallback16
*
*
*/
static HDDEDATA CALLBACK WDML_InvokeCallback16(DWORD pfn16, UINT uType, UINT uFmt,
HCONV hConv, HSZ hsz1, HSZ hsz2,
HDDEDATA hdata, ULONG_PTR dwData1, ULONG_PTR dwData2)
{
DWORD d1 = 0;
HDDEDATA ret;
CONVCONTEXT16 cc16;
WORD args[16];
switch (uType)
{
case XTYP_CONNECT:
case XTYP_WILDCONNECT:
if (dwData1)
{
map3216_conv_context(&cc16, (const CONVCONTEXT*)dwData1);
d1 = MapLS(&cc16);
}
break;
default:
d1 = dwData1;
break;
}
args[15] = HIWORD(uType);
args[14] = LOWORD(uType);
args[13] = HIWORD(uFmt);
args[12] = LOWORD(uFmt);
args[11] = HIWORD(hConv);
args[10] = LOWORD(hConv);
args[9] = HIWORD(hsz1);
args[8] = LOWORD(hsz1);
args[7] = HIWORD(hsz2);
args[6] = LOWORD(hsz2);
args[5] = HIWORD(hdata);
args[4] = LOWORD(hdata);
args[3] = HIWORD(d1);
args[2] = LOWORD(d1);
args[1] = HIWORD(dwData2);
args[0] = LOWORD(dwData2);
WOWCallback16Ex(pfn16, WCB16_PASCAL, sizeof(args), args, (DWORD *)&ret);
switch (uType)
{
case XTYP_CONNECT:
case XTYP_WILDCONNECT:
if (d1 != 0) UnMapLS(d1);
break;
}
return ret;
}
#define MAX_THUNKS 32
/* As DDEML doesn't provide a way to get back to an InstanceID when
* a callback is run, we use thunk in order to implement simply the
* 32bit->16bit callback mechanism.
* For each 16bit instance, we create a thunk, which will be passed as
* a 32bit callback. This thunk also stores (in the code!) the 16bit
* address of the 16bit callback, and passes it back to
* WDML_InvokeCallback16.
* The code below is mainly to create the thunks themselves
*/
#include "pshpack1.h"
static struct ddeml_thunk
{
BYTE popl_eax; /* popl %eax (return address) */
BYTE pushl_func; /* pushl $pfn16 (16bit callback function) */
SEGPTR pfn16;
BYTE pushl_eax; /* pushl %eax */
BYTE jmp; /* ljmp WDML_InvokeCallback16 */
DWORD callback;
DWORD instId; /* instance ID */
} *DDEML16_Thunks;
#include "poppack.h"
static CRITICAL_SECTION ddeml_cs;
static CRITICAL_SECTION_DEBUG critsect_debug =
{
0, 0, &ddeml_cs,
{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": ddeml_cs") }
};
static CRITICAL_SECTION ddeml_cs = { &critsect_debug, -1, 0, 0, 0, 0 };
static struct ddeml_thunk* DDEML_AddThunk(DWORD instId, DWORD pfn16)
{
struct ddeml_thunk* thunk;
if (!DDEML16_Thunks)
{
DDEML16_Thunks = VirtualAlloc(NULL, MAX_THUNKS * sizeof(*DDEML16_Thunks), MEM_COMMIT,
PAGE_EXECUTE_READWRITE);
if (!DDEML16_Thunks) return NULL;
for (thunk = DDEML16_Thunks; thunk < &DDEML16_Thunks[MAX_THUNKS]; thunk++)
{
thunk->popl_eax = 0x58; /* popl %eax */
thunk->pushl_func = 0x68; /* pushl $pfn16 */
thunk->pfn16 = 0;
thunk->pushl_eax = 0x50; /* pushl %eax */
thunk->jmp = 0xe9; /* jmp WDML_InvokeCallback16 */
thunk->callback = (char *)WDML_InvokeCallback16 - (char *)(&thunk->callback + 1);
thunk->instId = 0;
}
}
for (thunk = DDEML16_Thunks; thunk < &DDEML16_Thunks[MAX_THUNKS]; thunk++)
{
/* either instId is 0, and we're looking for an empty slot, or
* instId is an already existing instance, and we should find its thunk
*/
if (thunk->instId == instId)
{
thunk->pfn16 = pfn16;
return thunk;
}
}
FIXME("Out of ddeml-thunks. Bump MAX_THUNKS\n");
return NULL;
}
/******************************************************************************
* DdeInitialize (DDEML.2)
*/
UINT16 WINAPI DdeInitialize16(LPDWORD pidInst, PFNCALLBACK16 pfnCallback,
DWORD afCmd, DWORD ulRes)
{
UINT16 ret;
struct ddeml_thunk* thunk;
EnterCriticalSection(&ddeml_cs);
if ((thunk = DDEML_AddThunk(*pidInst, (DWORD)pfnCallback)))
{
ret = DdeInitializeA(pidInst, (PFNCALLBACK)thunk, afCmd, ulRes);
if (ret == DMLERR_NO_ERROR) thunk->instId = *pidInst;
}
else ret = DMLERR_SYS_ERROR;
LeaveCriticalSection(&ddeml_cs);
return ret;
}
/*****************************************************************
* DdeUninitialize (DDEML.3)
*/
BOOL16 WINAPI DdeUninitialize16(DWORD idInst)
{
struct ddeml_thunk* thunk;
BOOL16 ret = FALSE;
if (!DdeUninitialize(idInst)) return FALSE;
EnterCriticalSection(&ddeml_cs);
for (thunk = DDEML16_Thunks; thunk < &DDEML16_Thunks[MAX_THUNKS]; thunk++)
{
if (thunk->instId == idInst)
{
thunk->instId = 0;
ret = TRUE;
break;
}
}
LeaveCriticalSection(&ddeml_cs);
if (!ret) FIXME("Should never happen\n");
return ret;
}
/*****************************************************************
* DdeConnectList [DDEML.4]
*/
HCONVLIST WINAPI DdeConnectList16(DWORD idInst, HSZ hszService, HSZ hszTopic,
HCONVLIST hConvList, LPCONVCONTEXT16 pCC16)
{
CONVCONTEXT cc;
CONVCONTEXT* pCC = NULL;
if (pCC16)
map1632_conv_context(pCC = &cc, pCC16);
return DdeConnectList(idInst, hszService, hszTopic, hConvList, pCC);
}
/*****************************************************************
* DdeQueryNextServer [DDEML.5]
*/
HCONV WINAPI DdeQueryNextServer16(HCONVLIST hConvList, HCONV hConvPrev)
{
return DdeQueryNextServer(hConvList, hConvPrev);
}
/*****************************************************************
* DdeDisconnectList (DDEML.6)
*/
BOOL16 WINAPI DdeDisconnectList16(HCONVLIST hConvList)
{
return (BOOL16)DdeDisconnectList(hConvList);
}
/*****************************************************************
* DdeQueryString (DDEML.23)
*/
DWORD WINAPI DdeQueryString16(DWORD idInst, HSZ hsz, LPSTR lpsz, DWORD cchMax,
INT16 codepage)
{
return DdeQueryStringA(idInst, hsz, lpsz, cchMax, codepage);
}
/*****************************************************************
* DdeConnect (DDEML.7)
*/
HCONV WINAPI DdeConnect16(DWORD idInst, HSZ hszService, HSZ hszTopic,
LPCONVCONTEXT16 pCC16)
{
CONVCONTEXT cc;
CONVCONTEXT* pCC = NULL;
if (pCC16)
map1632_conv_context(pCC = &cc, pCC16);
return DdeConnect(idInst, hszService, hszTopic, pCC);
}
/*****************************************************************
* DdeDisconnect (DDEML.8)
*/
BOOL16 WINAPI DdeDisconnect16(HCONV hConv)
{
return (BOOL16)DdeDisconnect(hConv);
}
/*****************************************************************
* DdeSetUserHandle (DDEML.10)
*/
BOOL16 WINAPI DdeSetUserHandle16(HCONV hConv, DWORD id, DWORD hUser)
{
return DdeSetUserHandle(hConv, id, hUser);
}
/*****************************************************************
* DdeCreateDataHandle (DDEML.14)
*/
HDDEDATA WINAPI DdeCreateDataHandle16(DWORD idInst, LPBYTE pSrc, DWORD cb,
DWORD cbOff, HSZ hszItem, UINT16 wFmt,
UINT16 afCmd)
{
return DdeCreateDataHandle(idInst, pSrc, cb, cbOff, hszItem, wFmt, afCmd);
}
/*****************************************************************
* DdeCreateStringHandle (DDEML.21)
*/
HSZ WINAPI DdeCreateStringHandle16(DWORD idInst, LPCSTR str, INT16 codepage)
{
if (codepage)
{
return DdeCreateStringHandleA(idInst, str, codepage);
}
else
{
TRACE("Default codepage supplied\n");
return DdeCreateStringHandleA(idInst, str, CP_WINANSI);
}
}
/*****************************************************************
* DdeFreeStringHandle (DDEML.22)
*/
BOOL16 WINAPI DdeFreeStringHandle16(DWORD idInst, HSZ hsz)
{
return (BOOL16)DdeFreeStringHandle(idInst, hsz);
}
/*****************************************************************
* DdeFreeDataHandle (DDEML.19)
*/
BOOL16 WINAPI DdeFreeDataHandle16(HDDEDATA hData)
{
return (BOOL16)DdeFreeDataHandle(hData);
}
/*****************************************************************
* DdeKeepStringHandle (DDEML.24)
*/
BOOL16 WINAPI DdeKeepStringHandle16(DWORD idInst, HSZ hsz)
{
return DdeKeepStringHandle(idInst, hsz);
}
/*****************************************************************
* DdeClientTransaction (DDEML.11)
*/
HDDEDATA WINAPI DdeClientTransaction16(LPVOID pData, DWORD cbData, HCONV hConv,
HSZ hszItem, UINT16 wFmt, UINT16 wType,
DWORD dwTimeout, LPDWORD pdwResult)
{
if (cbData != (DWORD)-1)
{
/* pData is not a pointer if cbData is -1, so we linearize the address
* here rather than in the calling code. */
pData = MapSL((SEGPTR)pData);
}
return DdeClientTransaction(pData, cbData, hConv, hszItem,
wFmt, wType, dwTimeout, pdwResult);
}
/*****************************************************************
*
* DdeAbandonTransaction (DDEML.12)
*
*/
BOOL16 WINAPI DdeAbandonTransaction16(DWORD idInst, HCONV hConv, DWORD idTransaction)
{
return (BOOL16)DdeAbandonTransaction(idInst, hConv, idTransaction);
}
/*****************************************************************
* DdePostAdvise [DDEML.13]
*/
BOOL16 WINAPI DdePostAdvise16(DWORD idInst, HSZ hszTopic, HSZ hszItem)
{
return (BOOL16)DdePostAdvise(idInst, hszTopic, hszItem);
}
/*****************************************************************
* DdeAddData (DDEML.15)
*/
HDDEDATA WINAPI DdeAddData16(HDDEDATA hData, LPBYTE pSrc, DWORD cb, DWORD cbOff)
{
return DdeAddData(hData, pSrc, cb, cbOff);
}
/*****************************************************************
* DdeGetData [DDEML.16]
*/
DWORD WINAPI DdeGetData16(HDDEDATA hData, LPBYTE pDst, DWORD cbMax, DWORD cbOff)
{
return DdeGetData(hData, pDst, cbMax, cbOff);
}
/*****************************************************************
* DdeAccessData (DDEML.17)
*/
LPBYTE WINAPI DdeAccessData16(HDDEDATA hData, LPDWORD pcbDataSize)
{
FIXME("expect trouble\n");
/* FIXME: there's a memory leak here... */
return (LPBYTE)MapLS(DdeAccessData(hData, pcbDataSize));
}
/*****************************************************************
* DdeUnaccessData (DDEML.18)
*/
BOOL16 WINAPI DdeUnaccessData16(HDDEDATA hData)
{
return DdeUnaccessData(hData);
}
/*****************************************************************
* DdeEnableCallback (DDEML.26)
*/
BOOL16 WINAPI DdeEnableCallback16(DWORD idInst, HCONV hConv, UINT16 wCmd)
{
return DdeEnableCallback(idInst, hConv, wCmd);
}
/*****************************************************************
* DdeNameService (DDEML.27)
*/
HDDEDATA WINAPI DdeNameService16(DWORD idInst, HSZ hsz1, HSZ hsz2, UINT16 afCmd)
{
return DdeNameService(idInst, hsz1, hsz2, afCmd);
}
/*****************************************************************
* DdeGetLastError (DDEML.20)
*/
UINT16 WINAPI DdeGetLastError16(DWORD idInst)
{
return (UINT16)DdeGetLastError(idInst);
}
/*****************************************************************
* DdeCmpStringHandles (DDEML.36)
*/
INT16 WINAPI DdeCmpStringHandles16(HSZ hsz1, HSZ hsz2)
{
return DdeCmpStringHandles(hsz1, hsz2);
}
/******************************************************************
* DdeQueryConvInfo (DDEML.9)
*
*/
UINT16 WINAPI DdeQueryConvInfo16(HCONV hConv, DWORD idTransaction,
LPCONVINFO16 lpConvInfo)
{
CONVINFO ci32;
CONVINFO16 ci16;
UINT ret;
ci32.cb = sizeof(ci32);
ci32.ConvCtxt.cb = sizeof(ci32.ConvCtxt);
ret = DdeQueryConvInfo(hConv, idTransaction, &ci32);
if (ret == 0) return 0;
ci16.cb = lpConvInfo->cb;
ci16.hUser = ci32.hUser;
ci16.hConvPartner = ci32.hConvPartner;
ci16.hszSvcPartner = ci32.hszSvcPartner;
ci16.hszServiceReq = ci32.hszServiceReq;
ci16.hszTopic = ci32.hszTopic;
ci16.hszItem = ci32.hszItem;
ci16.wFmt = ci32.wFmt;
ci16.wType = ci32.wType;
ci16.wStatus = ci32.wStatus;
ci16.wConvst = ci32.wConvst;
ci16.wLastError = ci32.wLastError;
ci16.hConvList = ci32.hConvList;
map3216_conv_context(&ci16.ConvCtxt, &ci32.ConvCtxt);
memcpy(lpConvInfo, &ci16, lpConvInfo->cb);
return lpConvInfo->cb;
}
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