dlls/ddeml.dll16/ddeml.c

   1 /*
   2  * DDEML library
   3  *
   4  * Copyright 1997 Alexandre Julliard
   5  * Copyright 1997 Len White
   6  * Copyright 1999 Keith Matthews
   7  * Copyright 2000 Corel
   8  * Copyright 2001,2002,2009 Eric Pouech
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  23  */
  24
  25 #include "config.h"
  26 #include "wine/port.h"
  27
  28 #include <stdarg.h>
  29 #include <string.h>
  30 #include "windef.h"
  31 #include "winbase.h"
  32 #include "wine/windef16.h"
  33 #include "wine/winbase16.h"
  34 #include "wownt32.h"
  35 #include "dde.h"
  36 #include "ddeml.h"
  37 #include "wine/debug.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(ddeml);
  40
  41
  42 typedef HDDEDATA (CALLBACK *PFNCALLBACK16)(UINT16,UINT16,HCONV,HSZ,HSZ,HDDEDATA,
  43                                            DWORD,DWORD);
  44
  45 typedef struct
  46 {
  47     UINT16  cb;
  48     UINT16  wFlags;
  49     UINT16  wCountryID;
  50     INT16   iCodePage;
  51     DWORD   dwLangID;
  52     DWORD   dwSecurity;
  53 } CONVCONTEXT16, *LPCONVCONTEXT16;
  54
  55 typedef struct
  56 {
  57     DWORD          cb;
  58     DWORD          hUser;
  59     HCONV          hConvPartner;
  60     HSZ            hszSvcPartner;
  61     HSZ            hszServiceReq;
  62     HSZ            hszTopic;
  63     HSZ            hszItem;
  64     UINT16         wFmt;
  65     UINT16         wType;
  66     UINT16         wStatus;
  67     UINT16         wConvst;
  68     UINT16         wLastError;
  69     HCONVLIST      hConvList;
  70     CONVCONTEXT16  ConvCtxt;
  71 } CONVINFO16, *LPCONVINFO16;
  72
  73 static void map1632_conv_context(CONVCONTEXT* cc32, const CONVCONTEXT16* cc16)
  74 {
  75     cc32->cb = sizeof(*cc32);
  76     cc32->wFlags = cc16->wFlags;
  77     cc32->wCountryID = cc16->wCountryID;
  78     cc32->iCodePage = cc16->iCodePage;
  79     cc32->dwLangID = cc16->dwLangID;
  80     cc32->dwSecurity = cc16->dwSecurity;
  81 }
  82
  83 static void map3216_conv_context(CONVCONTEXT16* cc16, const CONVCONTEXT* cc32)
  84 {
  85     cc16->cb = sizeof(*cc16);
  86     cc16->wFlags = cc32->wFlags;
  87     cc16->wCountryID = cc32->wCountryID;
  88     cc16->iCodePage = cc32->iCodePage;
  89     cc16->dwLangID = cc32->dwLangID;
  90     cc16->dwSecurity = cc32->dwSecurity;
  91 }
  92
  93 /******************************************************************
  94  *              WDML_InvokeCallback16
  95  *
  96  *
  97  */
  98 static HDDEDATA CALLBACK WDML_InvokeCallback16(DWORD pfn16, UINT uType, UINT uFmt,
  99                                                HCONV hConv, HSZ hsz1, HSZ hsz2,
 100                                                HDDEDATA hdata, ULONG_PTR dwData1, ULONG_PTR dwData2)
 101 {
 102     DWORD               d1 = 0;
 103     HDDEDATA            ret;
 104     CONVCONTEXT16       cc16;
 105     WORD args[16];
 106
 107     switch (uType)
 108     {
 109     case XTYP_CONNECT:
 110     case XTYP_WILDCONNECT:
 111         if (dwData1)
 112         {
 113             map3216_conv_context(&cc16, (const CONVCONTEXT*)dwData1);
 114             d1 = MapLS(&cc16);
 115         }
 116         break;
 117     default:
 118         d1 = dwData1;
 119         break;
 120     }
 121     args[15] = HIWORD(uType);
 122     args[14] = LOWORD(uType);
 123     args[13] = HIWORD(uFmt);
 124     args[12] = LOWORD(uFmt);
 125     args[11] = HIWORD(hConv);
 126     args[10] = LOWORD(hConv);
 127     args[9]  = HIWORD(hsz1);
 128     args[8]  = LOWORD(hsz1);
 129     args[7]  = HIWORD(hsz2);
 130     args[6]  = LOWORD(hsz2);
 131     args[5]  = HIWORD(hdata);
 132     args[4]  = LOWORD(hdata);
 133     args[3]  = HIWORD(d1);
 134     args[2]  = LOWORD(d1);
 135     args[1]  = HIWORD(dwData2);
 136     args[0]  = LOWORD(dwData2);
 137     WOWCallback16Ex(pfn16, WCB16_PASCAL, sizeof(args), args, (DWORD *)&ret);
 138
 139     switch (uType)
 140     {
 141     case XTYP_CONNECT:
 142     case XTYP_WILDCONNECT:
 143         if (d1 != 0) UnMapLS(d1);
 144         break;
 145     }
 146     return ret;
 147 }
 148
 149 #define MAX_THUNKS      32
 150 /* As DDEML doesn't provide a way to get back to an InstanceID when
 151  * a callback is run, we use thunk in order to implement simply the
 152  * 32bit->16bit callback mechanism.
 153  * For each 16bit instance, we create a thunk, which will be passed as
 154  * a 32bit callback. This thunk also stores (in the code!) the 16bit
 155  * address of the 16bit callback, and passes it back to
 156  * WDML_InvokeCallback16.
 157  * The code below is mainly to create the thunks themselves
 158  */
 159 #include "pshpack1.h"
 160 static struct ddeml_thunk
 161 {
 162     BYTE        popl_eax;        /* popl  %eax (return address) */
 163     BYTE        pushl_func;      /* pushl $pfn16 (16bit callback function) */
 164     SEGPTR      pfn16;
 165     BYTE        pushl_eax;       /* pushl %eax */
 166     BYTE        jmp;             /* ljmp WDML_InvokeCallback16 */
 167     DWORD       callback;
 168     DWORD       instId;          /* instance ID */
 169 } *DDEML16_Thunks;
 170 #include "poppack.h"
 171
 172 static CRITICAL_SECTION ddeml_cs;
 173 static CRITICAL_SECTION_DEBUG critsect_debug =
 174 {
 175     0, 0, &ddeml_cs,
 176     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
 177       0, 0, { (DWORD_PTR)(__FILE__ ": ddeml_cs") }
 178 };
 179 static CRITICAL_SECTION ddeml_cs = { &critsect_debug, -1, 0, 0, 0, 0 };
 180
 181 static struct ddeml_thunk*      DDEML_AddThunk(DWORD instId, DWORD pfn16)
 182 {
 183     struct ddeml_thunk* thunk;
 184
 185     if (!DDEML16_Thunks)
 186     {
 187         DDEML16_Thunks = VirtualAlloc(NULL, MAX_THUNKS * sizeof(*DDEML16_Thunks), MEM_COMMIT,
 188                                       PAGE_EXECUTE_READWRITE);
 189         if (!DDEML16_Thunks) return NULL;
 190         for (thunk = DDEML16_Thunks; thunk < &DDEML16_Thunks[MAX_THUNKS]; thunk++)
 191         {
 192             thunk->popl_eax     = 0x58;   /* popl  %eax */
 193             thunk->pushl_func   = 0x68;   /* pushl $pfn16 */
 194             thunk->pfn16        = 0;
 195             thunk->pushl_eax    = 0x50;   /* pushl %eax */
 196             thunk->jmp          = 0xe9;   /* jmp WDML_InvokeCallback16 */
 197             thunk->callback     = (char *)WDML_InvokeCallback16 - (char *)(&thunk->callback + 1);
 198             thunk->instId       = 0;
 199         }
 200     }
 201     for (thunk = DDEML16_Thunks; thunk < &DDEML16_Thunks[MAX_THUNKS]; thunk++)
 202     {
 203         /* either instId is 0, and we're looking for an empty slot, or
 204          * instId is an already existing instance, and we should find its thunk
 205          */
 206         if (thunk->instId == instId)
 207         {
 208             thunk->pfn16 = pfn16;
 209             return thunk;
 210         }
 211     }
 212     FIXME("Out of ddeml-thunks. Bump MAX_THUNKS\n");
 213     return NULL;
 214 }
 215
 216 /******************************************************************************
 217  *            DdeInitialize   (DDEML.2)
 218  */
 219 UINT16 WINAPI DdeInitialize16(LPDWORD pidInst, PFNCALLBACK16 pfnCallback,
 220                               DWORD afCmd, DWORD ulRes)
 221 {
 222     UINT16 ret;
 223     struct ddeml_thunk* thunk;
 224
 225     EnterCriticalSection(&ddeml_cs);
 226     if ((thunk = DDEML_AddThunk(*pidInst, (DWORD)pfnCallback)))
 227     {
 228         ret = DdeInitializeA(pidInst, (PFNCALLBACK)thunk, afCmd, ulRes);
 229         if (ret == DMLERR_NO_ERROR) thunk->instId = *pidInst;
 230     }
 231     else ret = DMLERR_SYS_ERROR;
 232     LeaveCriticalSection(&ddeml_cs);
 233     return ret;
 234 }
 235
 236 /*****************************************************************
 237  *            DdeUninitialize   (DDEML.3)
 238  */
 239 BOOL16 WINAPI DdeUninitialize16(DWORD idInst)
 240 {
 241     struct ddeml_thunk* thunk;
 242     BOOL16              ret = FALSE;
 243
 244     if (!DdeUninitialize(idInst)) return FALSE;
 245     EnterCriticalSection(&ddeml_cs);
 246     for (thunk = DDEML16_Thunks; thunk < &DDEML16_Thunks[MAX_THUNKS]; thunk++)
 247     {
 248         if (thunk->instId == idInst)
 249         {
 250             thunk->instId = 0;
 251             ret = TRUE;
 252             break;
 253         }
 254     }
 255     LeaveCriticalSection(&ddeml_cs);
 256     if (!ret) FIXME("Should never happen\n");
 257     return ret;
 258 }
 259
 260 /*****************************************************************
 261  * DdeConnectList [DDEML.4]
 262  */
 263
 264 HCONVLIST WINAPI DdeConnectList16(DWORD idInst, HSZ hszService, HSZ hszTopic,
 265                                   HCONVLIST hConvList, LPCONVCONTEXT16 pCC16)
 266 {
 267     CONVCONTEXT         cc;
 268     CONVCONTEXT*        pCC = NULL;
 269
 270     if (pCC16)
 271         map1632_conv_context(pCC = &cc, pCC16);
 272     return DdeConnectList(idInst, hszService, hszTopic, hConvList, pCC);
 273 }
 274
 275 /*****************************************************************
 276  * DdeQueryNextServer [DDEML.5]
 277  */
 278 HCONV WINAPI DdeQueryNextServer16(HCONVLIST hConvList, HCONV hConvPrev)
 279 {
 280     return DdeQueryNextServer(hConvList, hConvPrev);
 281 }
 282
 283 /*****************************************************************
 284  *            DdeDisconnectList (DDEML.6)
 285  */
 286 BOOL16 WINAPI DdeDisconnectList16(HCONVLIST hConvList)
 287 {
 288     return (BOOL16)DdeDisconnectList(hConvList);
 289 }
 290
 291
 292 /*****************************************************************
 293  *              DdeQueryString (DDEML.23)
 294  */
 295 DWORD WINAPI DdeQueryString16(DWORD idInst, HSZ hsz, LPSTR lpsz, DWORD cchMax,
 296                               INT16 codepage)
 297 {
 298     return DdeQueryStringA(idInst, hsz, lpsz, cchMax, codepage);
 299 }
 300
 301 /*****************************************************************
 302  *            DdeConnect   (DDEML.7)
 303  */
 304 HCONV WINAPI DdeConnect16(DWORD idInst, HSZ hszService, HSZ hszTopic,
 305                           LPCONVCONTEXT16 pCC16)
 306 {
 307     CONVCONTEXT         cc;
 308     CONVCONTEXT*        pCC = NULL;
 309
 310     if (pCC16)
 311         map1632_conv_context(pCC = &cc, pCC16);
 312     return DdeConnect(idInst, hszService, hszTopic, pCC);
 313 }
 314
 315 /*****************************************************************
 316  *            DdeDisconnect   (DDEML.8)
 317  */
 318 BOOL16 WINAPI DdeDisconnect16(HCONV hConv)
 319 {
 320     return (BOOL16)DdeDisconnect(hConv);
 321 }
 322
 323 /*****************************************************************
 324  *            DdeSetUserHandle (DDEML.10)
 325  */
 326 BOOL16 WINAPI DdeSetUserHandle16(HCONV hConv, DWORD id, DWORD hUser)
 327 {
 328     return DdeSetUserHandle(hConv, id, hUser);
 329 }
 330
 331 /*****************************************************************
 332  *            DdeCreateDataHandle (DDEML.14)
 333  */
 334 HDDEDATA WINAPI DdeCreateDataHandle16(DWORD idInst, LPBYTE pSrc, DWORD cb,
 335                                       DWORD cbOff, HSZ hszItem, UINT16 wFmt,
 336                                       UINT16 afCmd)
 337 {
 338     return DdeCreateDataHandle(idInst, pSrc, cb, cbOff, hszItem, wFmt, afCmd);
 339 }
 340
 341 /*****************************************************************
 342  *            DdeCreateStringHandle   (DDEML.21)
 343  */
 344 HSZ WINAPI DdeCreateStringHandle16(DWORD idInst, LPCSTR str, INT16 codepage)
 345 {
 346     if  (codepage)
 347     {
 348         return DdeCreateStringHandleA(idInst, str, codepage);
 349     }
 350     else
 351     {
 352         TRACE("Default codepage supplied\n");
 353         return DdeCreateStringHandleA(idInst, str, CP_WINANSI);
 354     }
 355 }
 356
 357 /*****************************************************************
 358  *            DdeFreeStringHandle   (DDEML.22)
 359  */
 360 BOOL16 WINAPI DdeFreeStringHandle16(DWORD idInst, HSZ hsz)
 361 {
 362     return (BOOL16)DdeFreeStringHandle(idInst, hsz);
 363 }
 364
 365 /*****************************************************************
 366  *            DdeFreeDataHandle   (DDEML.19)
 367  */
 368 BOOL16 WINAPI DdeFreeDataHandle16(HDDEDATA hData)
 369 {
 370     return (BOOL16)DdeFreeDataHandle(hData);
 371 }
 372
 373 /*****************************************************************
 374  *            DdeKeepStringHandle   (DDEML.24)
 375  */
 376 BOOL16 WINAPI DdeKeepStringHandle16(DWORD idInst, HSZ hsz)
 377 {
 378     return DdeKeepStringHandle(idInst, hsz);
 379 }
 380
 381 /*****************************************************************
 382  *            DdeClientTransaction  (DDEML.11)
 383  */
 384 HDDEDATA WINAPI DdeClientTransaction16(LPVOID pData, DWORD cbData, HCONV hConv,
 385                                        HSZ hszItem, UINT16 wFmt, UINT16 wType,
 386                                        DWORD dwTimeout, LPDWORD pdwResult)
 387 {
 388     if (cbData != (DWORD)-1)
 389     {
 390         /* pData is not a pointer if cbData is -1, so we linearize the address
 391          * here rather than in the calling code. */
 392         pData = MapSL((SEGPTR)pData);
 393     }
 394     return DdeClientTransaction(pData, cbData, hConv, hszItem,
 395                                 wFmt, wType, dwTimeout, pdwResult);
 396 }
 397
 398 /*****************************************************************
 399  *
 400  *            DdeAbandonTransaction (DDEML.12)
 401  *
 402  */
 403 BOOL16 WINAPI DdeAbandonTransaction16(DWORD idInst, HCONV hConv, DWORD idTransaction)
 404 {
 405     return (BOOL16)DdeAbandonTransaction(idInst, hConv, idTransaction);
 406 }
 407
 408 /*****************************************************************
 409  * DdePostAdvise [DDEML.13]
 410  */
 411 BOOL16 WINAPI DdePostAdvise16(DWORD idInst, HSZ hszTopic, HSZ hszItem)
 412 {
 413     return (BOOL16)DdePostAdvise(idInst, hszTopic, hszItem);
 414 }
 415
 416 /*****************************************************************
 417  *            DdeAddData (DDEML.15)
 418  */
 419 HDDEDATA WINAPI DdeAddData16(HDDEDATA hData, LPBYTE pSrc, DWORD cb, DWORD cbOff)
 420 {
 421     return DdeAddData(hData, pSrc, cb, cbOff);
 422 }
 423
 424 /*****************************************************************
 425  * DdeGetData [DDEML.16]
 426  */
 427 DWORD WINAPI DdeGetData16(HDDEDATA hData, LPBYTE pDst, DWORD cbMax, DWORD cbOff)
 428 {
 429     return DdeGetData(hData, pDst, cbMax, cbOff);
 430 }
 431
 432 /*****************************************************************
 433  *            DdeAccessData (DDEML.17)
 434  */
 435 LPBYTE WINAPI DdeAccessData16(HDDEDATA hData, LPDWORD pcbDataSize)
 436 {
 437     FIXME("expect trouble\n");
 438     /* FIXME: there's a memory leak here... */
 439     return (LPBYTE)MapLS(DdeAccessData(hData, pcbDataSize));
 440 }
 441
 442 /*****************************************************************
 443  *            DdeUnaccessData (DDEML.18)
 444  */
 445 BOOL16 WINAPI DdeUnaccessData16(HDDEDATA hData)
 446 {
 447     return DdeUnaccessData(hData);
 448 }
 449
 450 /*****************************************************************
 451  *            DdeEnableCallback (DDEML.26)
 452  */
 453 BOOL16 WINAPI DdeEnableCallback16(DWORD idInst, HCONV hConv, UINT16 wCmd)
 454 {
 455     return DdeEnableCallback(idInst, hConv, wCmd);
 456 }
 457
 458 /*****************************************************************
 459  *            DdeNameService  (DDEML.27)
 460  */
 461 HDDEDATA WINAPI DdeNameService16(DWORD idInst, HSZ hsz1, HSZ hsz2, UINT16 afCmd)
 462 {
 463     return DdeNameService(idInst, hsz1, hsz2, afCmd);
 464 }
 465
 466 /*****************************************************************
 467  *            DdeGetLastError  (DDEML.20)
 468  */
 469 UINT16 WINAPI DdeGetLastError16(DWORD idInst)
 470 {
 471     return (UINT16)DdeGetLastError(idInst);
 472 }
 473
 474 /*****************************************************************
 475  *            DdeCmpStringHandles (DDEML.36)
 476  */
 477 INT16 WINAPI DdeCmpStringHandles16(HSZ hsz1, HSZ hsz2)
 478 {
 479     return DdeCmpStringHandles(hsz1, hsz2);
 480 }
 481
 482 /******************************************************************
 483  *              DdeQueryConvInfo (DDEML.9)
 484  *
 485  */
 486 UINT16 WINAPI DdeQueryConvInfo16(HCONV hConv, DWORD idTransaction,
 487                                  LPCONVINFO16 lpConvInfo)
 488 {
 489     CONVINFO    ci32;
 490     CONVINFO16  ci16;
 491     UINT        ret;
 492
 493     ci32.cb = sizeof(ci32);
 494     ci32.ConvCtxt.cb = sizeof(ci32.ConvCtxt);
 495
 496     ret = DdeQueryConvInfo(hConv, idTransaction, &ci32);
 497     if (ret == 0) return 0;
 498
 499     ci16.cb = lpConvInfo->cb;
 500     ci16.hUser = ci32.hUser;
 501     ci16.hConvPartner = ci32.hConvPartner;
 502     ci16.hszSvcPartner = ci32.hszSvcPartner;
 503     ci16.hszServiceReq = ci32.hszServiceReq;
 504     ci16.hszTopic = ci32.hszTopic;
 505     ci16.hszItem = ci32.hszItem;
 506     ci16.wFmt = ci32.wFmt;
 507     ci16.wType = ci32.wType;
 508     ci16.wStatus = ci32.wStatus;
 509     ci16.wConvst = ci32.wConvst;
 510     ci16.wLastError = ci32.wLastError;
 511     ci16.hConvList = ci32.hConvList;
 512
 513     map3216_conv_context(&ci16.ConvCtxt, &ci32.ConvCtxt);
 514
 515     memcpy(lpConvInfo, &ci16, lpConvInfo->cb);
 516     return lpConvInfo->cb;
 517 }