dlls/user32/dde_server.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 Eric Pouech
   9  * Copyright 2003, 2004, 2005 Dmitry Timoshkov
  10  *
  11  * This library is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public
  13  * License as published by the Free Software Foundation; either
  14  * version 2.1 of the License, or (at your option) any later version.
  15  *
  16  * This library is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public
  22  * License along with this library; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  24  */
  25
  26 #include <stdarg.h>
  27 #include <string.h>
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "wingdi.h"
  31 #include "winuser.h"
  32 #include "dde.h"
  33 #include "ddeml.h"
  34 #include "win.h"
  35 #include "wine/debug.h"
  36 #include "dde_private.h"
  37
  38 WINE_DEFAULT_DEBUG_CHANNEL(ddeml);
  39
  40 static const WCHAR szServerNameClass[] = {'W','i','n','e','D','d','e','S','e','r','v','e','r','N','a','m','e',0};
  41 const char WDML_szServerConvClassA[] = "WineDdeServerConvA";
  42 const WCHAR WDML_szServerConvClassW[] = {'W','i','n','e','D','d','e','S','e','r','v','e','r','C','o','n','v','W',0};
  43
  44 static LRESULT CALLBACK WDML_ServerNameProc(HWND, UINT, WPARAM, LPARAM);
  45 static LRESULT CALLBACK WDML_ServerConvProc(HWND, UINT, WPARAM, LPARAM);
  46
  47 /******************************************************************************
  48  * DdePostAdvise [USER32.@]  Send transaction to DDE callback function.
  49  *
  50  * PARAMS
  51  *      idInst    [I] Instance identifier
  52  *      hszTopic  [I] Handle to topic name string
  53  *      hszItem   [I] Handle to item name string
  54  *
  55  * RETURNS
  56  *    Success: TRUE
  57  *    Failure: FALSE
  58  */
  59 BOOL WINAPI DdePostAdvise(DWORD idInst, HSZ hszTopic, HSZ hszItem)
  60 {
  61     WDML_INSTANCE*      pInstance = NULL;
  62     WDML_LINK*          pLink = NULL;
  63     HDDEDATA            hDdeData = 0;
  64     HGLOBAL             hItemData = 0;
  65     WDML_CONV*          pConv = NULL;
  66     ATOM                atom = 0;
  67     UINT                count;
  68
  69     TRACE("(%d,%p,%p)\n", idInst, hszTopic, hszItem);
  70
  71     pInstance = WDML_GetInstance(idInst);
  72
  73     if (pInstance == NULL || pInstance->links == NULL)
  74         return FALSE;
  75
  76     atom = WDML_MakeAtomFromHsz(hszItem);
  77     if (!atom) return FALSE;
  78
  79     /* first compute the number of links which will trigger a message */
  80     count = 0;
  81     for (pLink = pInstance->links[WDML_SERVER_SIDE]; pLink != NULL; pLink = pLink->next)
  82     {
  83         if (DdeCmpStringHandles(hszItem, pLink->hszItem) == 0)
  84         {
  85             count++;
  86         }
  87     }
  88     if (count >= CADV_LATEACK)
  89     {
  90         FIXME("too high value for count\n");
  91         count &= 0xFFFF;
  92     }
  93
  94     for (pLink = pInstance->links[WDML_SERVER_SIDE]; pLink != NULL; pLink = pLink->next)
  95     {
  96         if (DdeCmpStringHandles(hszItem, pLink->hszItem) == 0)
  97         {
  98             hDdeData = WDML_InvokeCallback(pInstance, XTYP_ADVREQ, pLink->uFmt, pLink->hConv,
  99                                            hszTopic, hszItem, 0, --count, 0);
 100
 101             if (hDdeData == (HDDEDATA)CBR_BLOCK)
 102             {
 103                 /* MS doc is not consistent here */
 104                 FIXME("CBR_BLOCK returned for ADVREQ\n");
 105                 continue;
 106             }
 107             if (hDdeData)
 108             {
 109                 if (pLink->transactionType & XTYPF_NODATA)
 110                 {
 111                     TRACE("no data\n");
 112                     hItemData = 0;
 113                 }
 114                 else
 115                 {
 116                     TRACE("with data\n");
 117
 118                     hItemData = WDML_DataHandle2Global(hDdeData, FALSE, FALSE, FALSE, FALSE);
 119                 }
 120
 121                 pConv = WDML_GetConv(pLink->hConv, TRUE);
 122
 123                 if (pConv == NULL)
 124                 {
 125                     if (!WDML_IsAppOwned(hDdeData))  DdeFreeDataHandle(hDdeData);
 126                     goto theError;
 127                 }
 128
 129                 if (!PostMessageW(pConv->hwndClient, WM_DDE_DATA, (WPARAM)pConv->hwndServer,
 130                                   PackDDElParam(WM_DDE_DATA, (UINT_PTR)hItemData, atom)))
 131                 {
 132                     ERR("post message failed\n");
 133                     pConv->wStatus &= ~ST_CONNECTED;
 134                     pConv->instance->lastError = DMLERR_POSTMSG_FAILED;
 135                     if (!WDML_IsAppOwned(hDdeData))  DdeFreeDataHandle(hDdeData);
 136                     GlobalFree(hItemData);
 137                     goto theError;
 138                 }
 139                 if (!WDML_IsAppOwned(hDdeData))  DdeFreeDataHandle(hDdeData);
 140             }
 141         }
 142     }
 143     return TRUE;
 144
 145  theError:
 146     if (atom) GlobalDeleteAtom(atom);
 147     return FALSE;
 148 }
 149
 150
 151 /******************************************************************************
 152  * DdeNameService [USER32.@]  {Un}registers service name of DDE server
 153  *
 154  * PARAMS
 155  *    idInst [I] Instance identifier
 156  *    hsz1   [I] Handle to service name string
 157  *    hsz2   [I] Reserved
 158  *    afCmd  [I] Service name flags
 159  *
 160  * RETURNS
 161  *    Success: Non-zero
 162  *    Failure: 0
 163  */
 164 HDDEDATA WINAPI DdeNameService(DWORD idInst, HSZ hsz1, HSZ hsz2, UINT afCmd)
 165 {
 166     WDML_SERVER*        pServer;
 167     WDML_INSTANCE*      pInstance;
 168     HDDEDATA            hDdeData;
 169     HWND                hwndServer;
 170     WNDCLASSEXW         wndclass;
 171
 172     hDdeData = NULL;
 173
 174     TRACE("(%d,%p,%p,%x)\n", idInst, hsz1, hsz2, afCmd);
 175
 176     /*  First check instance
 177      */
 178     pInstance = WDML_GetInstance(idInst);
 179     if  (pInstance == NULL)
 180     {
 181         TRACE("Instance not found as initialised\n");
 182         /*  Nothing has been initialised - exit now ! can return TRUE since effect is the same */
 183         return NULL;
 184     }
 185
 186     if (hsz2 != 0L)
 187     {
 188         /*      Illegal, reserved parameter
 189          */
 190         pInstance->lastError = DMLERR_INVALIDPARAMETER;
 191         WARN("Reserved parameter no-zero !!\n");
 192         return NULL;
 193     }
 194     if (hsz1 == 0 && !(afCmd & DNS_UNREGISTER))
 195     {
 196         /*      don't know if we should check this but it makes sense
 197          *      why supply REGISTER or filter flags if de-registering all
 198          */
 199         TRACE("General unregister unexpected flags\n");
 200         pInstance->lastError = DMLERR_INVALIDPARAMETER;
 201         return NULL;
 202     }
 203
 204     switch (afCmd & (DNS_REGISTER | DNS_UNREGISTER))
 205     {
 206     case DNS_REGISTER:
 207         pServer = WDML_FindServer(pInstance, hsz1, 0);
 208         if (pServer)
 209         {
 210             ERR("Trying to register already registered service!\n");
 211             pInstance->lastError = DMLERR_DLL_USAGE;
 212             return NULL;
 213         }
 214
 215         TRACE("Adding service name\n");
 216
 217         WDML_IncHSZ(pInstance, hsz1);
 218
 219         pServer = WDML_AddServer(pInstance, hsz1, 0);
 220
 221         WDML_BroadcastDDEWindows(WDML_szEventClass, WM_WDML_REGISTER,
 222                                  pServer->atomService, pServer->atomServiceSpec);
 223
 224         wndclass.cbSize        = sizeof(wndclass);
 225         wndclass.style         = 0;
 226         wndclass.lpfnWndProc   = WDML_ServerNameProc;
 227         wndclass.cbClsExtra    = 0;
 228         wndclass.cbWndExtra    = 2 * sizeof(ULONG_PTR);
 229         wndclass.hInstance     = 0;
 230         wndclass.hIcon         = 0;
 231         wndclass.hCursor       = 0;
 232         wndclass.hbrBackground = 0;
 233         wndclass.lpszMenuName  = NULL;
 234         wndclass.lpszClassName = szServerNameClass;
 235         wndclass.hIconSm       = 0;
 236
 237         RegisterClassExW(&wndclass);
 238
 239         hwndServer = CreateWindowW(szServerNameClass, NULL,
 240                                    WS_POPUP, 0, 0, 0, 0,
 241                                    0, 0, 0, 0);
 242
 243         SetWindowLongPtrW(hwndServer, GWL_WDML_INSTANCE, (ULONG_PTR)pInstance);
 244         SetWindowLongPtrW(hwndServer, GWL_WDML_SERVER, (ULONG_PTR)pServer);
 245         TRACE("Created nameServer=%p for instance=%08x\n", hwndServer, idInst);
 246
 247         pServer->hwndServer = hwndServer;
 248         break;
 249
 250     case DNS_UNREGISTER:
 251         if (hsz1 == 0L)
 252         {
 253             /* General unregister situation
 254              * terminate all server side pending conversations
 255              */
 256             while (pInstance->servers)
 257                 WDML_RemoveServer(pInstance, pInstance->servers->hszService, 0);
 258             pInstance->servers = NULL;
 259             TRACE("General de-register - finished\n");
 260         }
 261         else
 262         {
 263             WDML_RemoveServer(pInstance, hsz1, 0L);
 264         }
 265         break;
 266     }
 267
 268     if (afCmd & (DNS_FILTERON | DNS_FILTEROFF))
 269     {
 270         /*      Set filter flags on to hold notifications of connection
 271          */
 272         pServer = WDML_FindServer(pInstance, hsz1, 0);
 273         if (!pServer)
 274         {
 275             /*  trying to filter where no service names !!
 276              */
 277             pInstance->lastError = DMLERR_DLL_USAGE;
 278             return NULL;
 279         }
 280         else
 281         {
 282             pServer->filterOn = (afCmd & DNS_FILTERON) != 0;
 283         }
 284     }
 285     return (HDDEDATA)TRUE;
 286 }
 287
 288 /******************************************************************
 289  *              WDML_CreateServerConv
 290  *
 291  *
 292  */
 293 static WDML_CONV* WDML_CreateServerConv(WDML_INSTANCE* pInstance, HWND hwndClient,
 294                                         HWND hwndServerName, HSZ hszApp, HSZ hszTopic)
 295 {
 296     HWND        hwndServerConv;
 297     WDML_CONV*  pConv;
 298
 299     if (pInstance->unicode)
 300     {
 301         WNDCLASSEXW wndclass;
 302
 303         wndclass.cbSize        = sizeof(wndclass);
 304         wndclass.style         = 0;
 305         wndclass.lpfnWndProc   = WDML_ServerConvProc;
 306         wndclass.cbClsExtra    = 0;
 307         wndclass.cbWndExtra    = 2 * sizeof(ULONG_PTR);
 308         wndclass.hInstance     = 0;
 309         wndclass.hIcon         = 0;
 310         wndclass.hCursor       = 0;
 311         wndclass.hbrBackground = 0;
 312         wndclass.lpszMenuName  = NULL;
 313         wndclass.lpszClassName = WDML_szServerConvClassW;
 314         wndclass.hIconSm       = 0;
 315
 316         RegisterClassExW(&wndclass);
 317
 318         hwndServerConv = CreateWindowW(WDML_szServerConvClassW, 0,
 319                                        WS_CHILD, 0, 0, 0, 0,
 320                                        hwndServerName, 0, 0, 0);
 321     }
 322     else
 323     {
 324         WNDCLASSEXA wndclass;
 325
 326         wndclass.cbSize        = sizeof(wndclass);
 327         wndclass.style         = 0;
 328         wndclass.lpfnWndProc   = WDML_ServerConvProc;
 329         wndclass.cbClsExtra    = 0;
 330         wndclass.cbWndExtra    = 2 * sizeof(ULONG_PTR);
 331         wndclass.hInstance     = 0;
 332         wndclass.hIcon         = 0;
 333         wndclass.hCursor       = 0;
 334         wndclass.hbrBackground = 0;
 335         wndclass.lpszMenuName  = NULL;
 336         wndclass.lpszClassName = WDML_szServerConvClassA;
 337         wndclass.hIconSm       = 0;
 338
 339         RegisterClassExA(&wndclass);
 340
 341         hwndServerConv = CreateWindowA(WDML_szServerConvClassA, 0,
 342                                       WS_CHILD, 0, 0, 0, 0,
 343                                       hwndServerName, 0, 0, 0);
 344     }
 345
 346     TRACE("Created convServer=%p (nameServer=%p) for instance=%08x\n",
 347           hwndServerConv, hwndServerName, pInstance->instanceID);
 348
 349     pConv = WDML_AddConv(pInstance, WDML_SERVER_SIDE, hszApp, hszTopic,
 350                          hwndClient, hwndServerConv);
 351     if (pConv)
 352     {
 353         SetWindowLongPtrW(hwndServerConv, GWL_WDML_INSTANCE, (ULONG_PTR)pInstance);
 354         SetWindowLongPtrW(hwndServerConv, GWL_WDML_CONVERSATION, (ULONG_PTR)pConv);
 355
 356         /* this should be the only place using SendMessage for WM_DDE_ACK */
 357         /* note: sent messages shall not use packing */
 358         SendMessageW(hwndClient, WM_DDE_ACK, (WPARAM)hwndServerConv,
 359                      MAKELPARAM(WDML_MakeAtomFromHsz(hszApp), WDML_MakeAtomFromHsz(hszTopic)));
 360         /* we assume we're connected since we've sent an answer...
 361          * I'm not sure what we can do... it doesn't look like the return value
 362          * of SendMessage is used... sigh...
 363          */
 364         pConv->wStatus |= ST_CONNECTED;
 365     }
 366     else
 367     {
 368         DestroyWindow(hwndServerConv);
 369     }
 370     return pConv;
 371 }
 372
 373 /******************************************************************
 374  *              WDML_ServerNameProc
 375  *
 376  *
 377  */
 378 static LRESULT CALLBACK WDML_ServerNameProc(HWND hwndServer, UINT iMsg, WPARAM wParam, LPARAM lParam)
 379 {
 380     HWND                hwndClient;
 381     HSZ                 hszApp, hszTop;
 382     HDDEDATA            hDdeData = 0;
 383     WDML_INSTANCE*      pInstance;
 384     UINT_PTR            uiLo, uiHi;
 385
 386     switch (iMsg)
 387     {
 388     case WM_DDE_INITIATE:
 389
 390         /* wParam         -- sending window handle
 391            LOWORD(lParam) -- application atom
 392            HIWORD(lParam) -- topic atom */
 393
 394         TRACE("WM_DDE_INITIATE message received!\n");
 395         hwndClient = (HWND)wParam;
 396
 397         pInstance = WDML_GetInstanceFromWnd(hwndServer);
 398         TRACE("idInst=%d, threadID=0x%x\n", pInstance->instanceID, GetCurrentThreadId());
 399         if (!pInstance) return 0;
 400
 401         /* don't free DDEParams, since this is a broadcast */
 402         UnpackDDElParam(WM_DDE_INITIATE, lParam, &uiLo, &uiHi);
 403
 404         hszApp = WDML_MakeHszFromAtom(pInstance, uiLo);
 405         hszTop = WDML_MakeHszFromAtom(pInstance, uiHi);
 406
 407         if (!(pInstance->CBFflags & CBF_FAIL_CONNECTIONS))
 408         {
 409             BOOL                self = FALSE;
 410             CONVCONTEXT         cc;
 411             CONVCONTEXT*        pcc = NULL;
 412             WDML_CONV*          pConv;
 413             char                buf[256];
 414
 415             if (GetWindowThreadProcessId(hwndClient, NULL) == GetWindowThreadProcessId(hwndServer, NULL) &&
 416                 WDML_GetInstanceFromWnd(hwndClient) == WDML_GetInstanceFromWnd(hwndServer))
 417             {
 418                 self = TRUE;
 419             }
 420             /* FIXME: so far, we don't grab distant convcontext, so only check if remote is
 421              * handled under DDEML, and if so build a default context
 422              */
 423            if ((GetClassNameA(hwndClient, buf, sizeof(buf)) &&
 424                 lstrcmpiA(buf, WDML_szClientConvClassA) == 0) ||
 425                (GetClassNameW(hwndClient, (LPWSTR)buf, sizeof(buf)/sizeof(WCHAR)) &&
 426                 lstrcmpiW((LPWSTR)buf, WDML_szClientConvClassW) == 0))
 427             {
 428                 pcc = &cc;
 429                 memset(pcc, 0, sizeof(*pcc));
 430                 pcc->cb = sizeof(*pcc);
 431                 pcc->iCodePage = IsWindowUnicode(hwndClient) ? CP_WINUNICODE : CP_WINANSI;
 432             }
 433             if ((pInstance->CBFflags & CBF_FAIL_SELFCONNECTIONS) && self)
 434             {
 435                 TRACE("Don't do self connection as requested\n");
 436             }
 437             else if (hszApp && hszTop)
 438             {
 439                 WDML_SERVER*    pServer = (WDML_SERVER*)GetWindowLongPtrW(hwndServer, GWL_WDML_SERVER);
 440
 441                 /* check filters for name service */
 442                 if (!pServer->filterOn || DdeCmpStringHandles(pServer->hszService, hszApp) == 0)
 443                 {
 444                     /* pass on to the callback  */
 445                     hDdeData = WDML_InvokeCallback(pInstance, XTYP_CONNECT,
 446                                                    0, 0, hszTop, hszApp, 0, (ULONG_PTR)pcc, self);
 447                     if ((ULONG_PTR)hDdeData)
 448                     {
 449                         pConv = WDML_CreateServerConv(pInstance, hwndClient, hwndServer,
 450                                                       hszApp, hszTop);
 451                         if (pConv)
 452                         {
 453                             if (pcc) pConv->wStatus |= ST_ISLOCAL;
 454                             WDML_InvokeCallback(pInstance, XTYP_CONNECT_CONFIRM, 0, (HCONV)pConv,
 455                                                 hszTop, hszApp, 0, (ULONG_PTR)pcc, self);
 456                         }
 457                     }
 458                 }
 459             }
 460             else if (pInstance->servers)
 461             {
 462                 /* pass on to the callback  */
 463                 hDdeData = WDML_InvokeCallback(pInstance, XTYP_WILDCONNECT,
 464                                                0, 0, hszTop, hszApp, 0, (ULONG_PTR)pcc, self);
 465
 466                 if (hDdeData == (HDDEDATA)CBR_BLOCK)
 467                 {
 468                     /* MS doc is not consistent here */
 469                     FIXME("CBR_BLOCK returned for WILDCONNECT\n");
 470                 }
 471                 else if ((ULONG_PTR)hDdeData != 0)
 472                 {
 473                     HSZPAIR*    hszp;
 474
 475                     hszp = (HSZPAIR*)DdeAccessData(hDdeData, NULL);
 476                     if (hszp)
 477                     {
 478                         int     i;
 479                         for (i = 0; hszp[i].hszSvc && hszp[i].hszTopic; i++)
 480                         {
 481                             pConv = WDML_CreateServerConv(pInstance, hwndClient, hwndServer,
 482                                                           hszp[i].hszSvc, hszp[i].hszTopic);
 483                             if (pConv)
 484                             {
 485                                 if (pcc) pConv->wStatus |= ST_ISLOCAL;
 486                                 WDML_InvokeCallback(pInstance, XTYP_CONNECT_CONFIRM, 0, (HCONV)pConv,
 487                                                     hszp[i].hszTopic, hszp[i].hszSvc, 0, (ULONG_PTR)pcc, self);
 488                             }
 489                         }
 490                         DdeUnaccessData(hDdeData);
 491                     }
 492                     if (!WDML_IsAppOwned(hDdeData)) DdeFreeDataHandle(hDdeData);
 493                 }
 494             }
 495         }
 496
 497         return 0;
 498
 499     case WM_DDE_REQUEST:
 500         FIXME("WM_DDE_REQUEST message received!\n");
 501         return 0;
 502     case WM_DDE_ADVISE:
 503         FIXME("WM_DDE_ADVISE message received!\n");
 504         return 0;
 505     case WM_DDE_UNADVISE:
 506         FIXME("WM_DDE_UNADVISE message received!\n");
 507         return 0;
 508     case WM_DDE_EXECUTE:
 509         FIXME("WM_DDE_EXECUTE message received!\n");
 510         return 0;
 511     case WM_DDE_POKE:
 512         FIXME("WM_DDE_POKE message received!\n");
 513         return 0;
 514     case WM_DDE_TERMINATE:
 515         FIXME("WM_DDE_TERMINATE message received!\n");
 516         return 0;
 517     default:
 518         break;
 519     }
 520
 521     return DefWindowProcW(hwndServer, iMsg, wParam, lParam);
 522 }
 523
 524 /******************************************************************
 525  *              WDML_ServerQueueRequest
 526  *
 527  *
 528  */
 529 static  WDML_XACT*      WDML_ServerQueueRequest(WDML_CONV* pConv, LPARAM lParam)
 530 {
 531     UINT_PTR            uiLo, uiHi;
 532     WDML_XACT*          pXAct;
 533
 534     UnpackDDElParam(WM_DDE_REQUEST, lParam, &uiLo, &uiHi);
 535
 536     pXAct = WDML_AllocTransaction(pConv->instance, WM_DDE_REQUEST,
 537                                   uiLo, WDML_MakeHszFromAtom(pConv->instance, uiHi));
 538     if (pXAct) pXAct->atom = uiHi;
 539     return pXAct;
 540 }
 541
 542 /******************************************************************
 543  *              WDML_ServerHandleRequest
 544  *
 545  *
 546  */
 547 static  WDML_QUEUE_STATE WDML_ServerHandleRequest(WDML_CONV* pConv, WDML_XACT* pXAct)
 548 {
 549     HDDEDATA            hDdeData = 0;
 550     BOOL                fAck = TRUE;
 551
 552     if (!(pConv->instance->CBFflags & CBF_FAIL_REQUESTS))
 553     {
 554
 555         hDdeData = WDML_InvokeCallback(pConv->instance, XTYP_REQUEST, pXAct->wFmt, (HCONV)pConv,
 556                                        pConv->hszTopic, pXAct->hszItem, 0, 0, 0);
 557     }
 558
 559     switch ((ULONG_PTR)hDdeData)
 560     {
 561     case 0:
 562         TRACE("No data returned from the Callback\n");
 563         fAck = FALSE;
 564         break;
 565
 566     case (ULONG_PTR)CBR_BLOCK:
 567         return WDML_QS_BLOCK;
 568
 569     default:
 570         {
 571             HGLOBAL     hMem = WDML_DataHandle2Global(hDdeData, TRUE, FALSE, FALSE, FALSE);
 572             if (!PostMessageW(pConv->hwndClient, WM_DDE_DATA, (WPARAM)pConv->hwndServer,
 573                               ReuseDDElParam(pXAct->lParam, WM_DDE_REQUEST, WM_DDE_DATA,
 574                                              (UINT_PTR)hMem, (UINT_PTR)pXAct->atom)))
 575             {
 576                 pConv->instance->lastError = DMLERR_POSTMSG_FAILED;
 577                 DdeFreeDataHandle(hDdeData);
 578                 GlobalFree(hMem);
 579                 fAck = FALSE;
 580             }
 581         }
 582         break;
 583     }
 584
 585     WDML_PostAck(pConv, WDML_SERVER_SIDE, 0, FALSE, fAck, pXAct->atom, pXAct->lParam, WM_DDE_REQUEST);
 586
 587     WDML_DecHSZ(pConv->instance, pXAct->hszItem);
 588
 589     return WDML_QS_HANDLED;
 590 }
 591
 592 /******************************************************************
 593  *              WDML_ServerQueueAdvise
 594  *
 595  *
 596  */
 597 static  WDML_XACT*      WDML_ServerQueueAdvise(WDML_CONV* pConv, LPARAM lParam)
 598 {
 599     UINT_PTR            uiLo, uiHi;
 600     WDML_XACT*          pXAct;
 601
 602     /* XTYP_ADVSTART transaction:
 603        establish link and save link info to InstanceInfoTable */
 604
 605     if (!UnpackDDElParam(WM_DDE_ADVISE, lParam, &uiLo, &uiHi))
 606         return NULL;
 607
 608     pXAct = WDML_AllocTransaction(pConv->instance, WM_DDE_ADVISE,
 609                                   0, WDML_MakeHszFromAtom(pConv->instance, uiHi));
 610     if (pXAct)
 611     {
 612         pXAct->hMem = (HGLOBAL)uiLo;
 613         pXAct->atom = uiHi;
 614     }
 615     return pXAct;
 616 }
 617
 618 /******************************************************************
 619  *              WDML_ServerHandleAdvise
 620  *
 621  *
 622  */
 623 static  WDML_QUEUE_STATE WDML_ServerHandleAdvise(WDML_CONV* pConv, WDML_XACT* pXAct)
 624 {
 625     UINT                uType;
 626     WDML_LINK*          pLink;
 627     DDEADVISE*          pDdeAdvise;
 628     HDDEDATA            hDdeData = 0;
 629     BOOL                fAck = TRUE;
 630
 631     pDdeAdvise = (DDEADVISE*)GlobalLock(pXAct->hMem);
 632     uType = XTYP_ADVSTART |
 633             (pDdeAdvise->fDeferUpd ? XTYPF_NODATA : 0) |
 634             (pDdeAdvise->fAckReq ? XTYPF_ACKREQ : 0);
 635
 636     if (!(pConv->instance->CBFflags & CBF_FAIL_ADVISES))
 637     {
 638         hDdeData = WDML_InvokeCallback(pConv->instance, XTYP_ADVSTART, pDdeAdvise->cfFormat,
 639                                        (HCONV)pConv, pConv->hszTopic, pXAct->hszItem, 0, 0, 0);
 640     }
 641
 642     switch ((ULONG_PTR)hDdeData)
 643     {
 644     case 0:
 645         TRACE("No data returned from the Callback\n");
 646         fAck = FALSE;
 647         break;
 648
 649     case (ULONG_PTR)CBR_BLOCK:
 650         return WDML_QS_BLOCK;
 651
 652     default:
 653         /* billx: first to see if the link is already created. */
 654         pLink = WDML_FindLink(pConv->instance, (HCONV)pConv, WDML_SERVER_SIDE,
 655                               pXAct->hszItem, TRUE, pDdeAdvise->cfFormat);
 656
 657         if (pLink != NULL)
 658         {
 659             /* we found a link, and only need to modify it in case it changes */
 660             pLink->transactionType = uType;
 661         }
 662         else
 663         {
 664             TRACE("Adding Link with hConv %p\n", pConv);
 665             WDML_AddLink(pConv->instance, (HCONV)pConv, WDML_SERVER_SIDE,
 666                          uType, pXAct->hszItem, pDdeAdvise->cfFormat);
 667         }
 668         break;
 669     }
 670
 671     GlobalUnlock(pXAct->hMem);
 672     if (fAck)
 673     {
 674         GlobalFree(pXAct->hMem);
 675     }
 676     pXAct->hMem = 0;
 677
 678     WDML_PostAck(pConv, WDML_SERVER_SIDE, 0, FALSE, fAck, pXAct->atom, pXAct->lParam, WM_DDE_ADVISE);
 679
 680     WDML_DecHSZ(pConv->instance, pXAct->hszItem);
 681
 682     return WDML_QS_HANDLED;
 683 }
 684
 685 /******************************************************************
 686  *              WDML_ServerQueueUnadvise
 687  *
 688  *
 689  */
 690 static  WDML_XACT* WDML_ServerQueueUnadvise(WDML_CONV* pConv, LPARAM lParam)
 691 {
 692     UINT_PTR            uiLo, uiHi;
 693     WDML_XACT*          pXAct;
 694
 695     UnpackDDElParam(WM_DDE_UNADVISE, lParam, &uiLo, &uiHi);
 696
 697     pXAct = WDML_AllocTransaction(pConv->instance, WM_DDE_UNADVISE,
 698                                   uiLo, WDML_MakeHszFromAtom(pConv->instance, uiHi));
 699     if (pXAct) pXAct->atom = uiHi;
 700     return pXAct;
 701 }
 702
 703 /******************************************************************
 704  *              WDML_ServerHandleUnadvise
 705  *
 706  *
 707  */
 708 static  WDML_QUEUE_STATE WDML_ServerHandleUnadvise(WDML_CONV* pConv, WDML_XACT* pXAct)
 709 {
 710     WDML_LINK*  pLink;
 711
 712     if (pXAct->hszItem == NULL || pXAct->wFmt == 0)
 713     {
 714         ERR("Unsupported yet options (null item or clipboard format)\n");
 715         return WDML_QS_ERROR;
 716     }
 717
 718     pLink = WDML_FindLink(pConv->instance, (HCONV)pConv, WDML_SERVER_SIDE,
 719                           pXAct->hszItem, TRUE, pXAct->wFmt);
 720     if (pLink == NULL)
 721     {
 722         ERR("Couln'd find link for %p, dropping request\n", pXAct->hszItem);
 723         FreeDDElParam(WM_DDE_UNADVISE, pXAct->lParam);
 724         return WDML_QS_ERROR;
 725     }
 726
 727     if (!(pConv->instance->CBFflags & CBF_FAIL_ADVISES))
 728     {
 729         WDML_InvokeCallback(pConv->instance, XTYP_ADVSTOP, pXAct->wFmt, (HCONV)pConv,
 730                             pConv->hszTopic, pXAct->hszItem, 0, 0, 0);
 731     }
 732
 733     WDML_RemoveLink(pConv->instance, (HCONV)pConv, WDML_SERVER_SIDE,
 734                     pXAct->hszItem, pXAct->wFmt);
 735
 736     /* send back ack */
 737     WDML_PostAck(pConv, WDML_SERVER_SIDE, 0, FALSE, TRUE, pXAct->atom,
 738                  pXAct->lParam, WM_DDE_UNADVISE);
 739
 740     WDML_DecHSZ(pConv->instance, pXAct->hszItem);
 741
 742     return WDML_QS_HANDLED;
 743 }
 744
 745 /******************************************************************
 746  *              WDML_QueueExecute
 747  *
 748  *
 749  */
 750 static  WDML_XACT* WDML_ServerQueueExecute(WDML_CONV* pConv, LPARAM lParam)
 751 {
 752     WDML_XACT*  pXAct;
 753
 754     pXAct = WDML_AllocTransaction(pConv->instance, WM_DDE_EXECUTE, 0, 0);
 755     if (pXAct)
 756     {
 757         pXAct->hMem    = (HGLOBAL)lParam;
 758     }
 759     return pXAct;
 760 }
 761
 762  /******************************************************************
 763  *              WDML_ServerHandleExecute
 764  *
 765  *
 766  */
 767 static  WDML_QUEUE_STATE WDML_ServerHandleExecute(WDML_CONV* pConv, WDML_XACT* pXAct)
 768 {
 769     HDDEDATA    hDdeData = DDE_FNOTPROCESSED;
 770     BOOL        fAck = FALSE, fBusy = FALSE;
 771
 772     if (!(pConv->instance->CBFflags & CBF_FAIL_EXECUTES))
 773     {
 774         LPVOID  ptr = GlobalLock(pXAct->hMem);
 775
 776         if (ptr)
 777         {
 778             hDdeData = DdeCreateDataHandle(0, ptr, GlobalSize(pXAct->hMem),
 779                                            0, 0, CF_TEXT, 0);
 780             GlobalUnlock(pXAct->hMem);
 781         }
 782         hDdeData = WDML_InvokeCallback(pConv->instance, XTYP_EXECUTE, 0, (HCONV)pConv,
 783                                        pConv->hszTopic, 0, hDdeData, 0L, 0L);
 784     }
 785
 786     switch ((ULONG_PTR)hDdeData)
 787     {
 788     case (ULONG_PTR)CBR_BLOCK:
 789         return WDML_QS_BLOCK;
 790
 791     case DDE_FACK:
 792         fAck = TRUE;
 793         break;
 794     case DDE_FBUSY:
 795         fBusy = TRUE;
 796         break;
 797     default:
 798         FIXME("Unsupported returned value %p\n", hDdeData);
 799         /* fall through */
 800     case DDE_FNOTPROCESSED:
 801         break;
 802     }
 803     WDML_PostAck(pConv, WDML_SERVER_SIDE, 0, fBusy, fAck, (UINT_PTR)pXAct->hMem, 0, 0);
 804
 805     return WDML_QS_HANDLED;
 806 }
 807
 808 /******************************************************************
 809  *              WDML_ServerQueuePoke
 810  *
 811  *
 812  */
 813 static  WDML_XACT* WDML_ServerQueuePoke(WDML_CONV* pConv, LPARAM lParam)
 814 {
 815     UINT_PTR            uiLo, uiHi;
 816     WDML_XACT*          pXAct;
 817
 818     UnpackDDElParam(WM_DDE_POKE, lParam, &uiLo, &uiHi);
 819
 820     pXAct = WDML_AllocTransaction(pConv->instance, WM_DDE_POKE,
 821                                   0, WDML_MakeHszFromAtom(pConv->instance, uiHi));
 822     if (pXAct)
 823     {
 824         pXAct->atom = uiHi;
 825         pXAct->hMem = (HGLOBAL)uiLo;
 826     }
 827     return pXAct;
 828 }
 829
 830 /******************************************************************
 831  *              WDML_ServerHandlePoke
 832  *
 833  *
 834  */
 835 static  WDML_QUEUE_STATE WDML_ServerHandlePoke(WDML_CONV* pConv, WDML_XACT* pXAct)
 836 {
 837     DDEPOKE*            pDdePoke;
 838     HDDEDATA            hDdeData;
 839     BOOL                fBusy = FALSE, fAck = FALSE;
 840
 841     pDdePoke = (DDEPOKE*)GlobalLock(pXAct->hMem);
 842     if (!pDdePoke)
 843     {
 844         return WDML_QS_ERROR;
 845     }
 846
 847     if (!(pConv->instance->CBFflags & CBF_FAIL_POKES))
 848     {
 849         hDdeData = DdeCreateDataHandle(pConv->instance->instanceID, pDdePoke->Value,
 850                                        GlobalSize(pXAct->hMem) - sizeof(DDEPOKE) + 1,
 851                                        0, 0, pDdePoke->cfFormat, 0);
 852         if (hDdeData)
 853         {
 854             HDDEDATA    hDdeDataOut;
 855
 856             hDdeDataOut = WDML_InvokeCallback(pConv->instance, XTYP_POKE, pDdePoke->cfFormat,
 857                                               (HCONV)pConv, pConv->hszTopic, pXAct->hszItem,
 858                                               hDdeData, 0, 0);
 859             switch ((ULONG_PTR)hDdeDataOut)
 860             {
 861             case DDE_FACK:
 862                 fAck = TRUE;
 863                 break;
 864             case DDE_FBUSY:
 865                 fBusy = TRUE;
 866                 break;
 867             default:
 868                 FIXME("Unsupported returned value %p\n", hDdeDataOut);
 869                 /* fal through */
 870             case DDE_FNOTPROCESSED:
 871                 break;
 872             }
 873             DdeFreeDataHandle(hDdeData);
 874         }
 875     }
 876     GlobalUnlock(pXAct->hMem);
 877
 878     if (!fAck)
 879     {
 880         GlobalFree(pXAct->hMem);
 881     }
 882     WDML_PostAck(pConv, WDML_SERVER_SIDE, 0, fBusy, fAck, pXAct->atom, pXAct->lParam, WM_DDE_POKE);
 883
 884     WDML_DecHSZ(pConv->instance, pXAct->hszItem);
 885
 886     return WDML_QS_HANDLED;
 887 }
 888
 889 /******************************************************************
 890  *              WDML_ServerQueueTerminate
 891  *
 892  *
 893  */
 894 static  WDML_XACT*      WDML_ServerQueueTerminate(WDML_CONV* pConv, LPARAM lParam)
 895 {
 896     WDML_XACT*  pXAct;
 897
 898     pXAct = WDML_AllocTransaction(pConv->instance, WM_DDE_TERMINATE, 0, 0);
 899     return pXAct;
 900 }
 901
 902 /******************************************************************
 903  *              WDML_ServerHandleTerminate
 904  *
 905  *
 906  */
 907 static  WDML_QUEUE_STATE WDML_ServerHandleTerminate(WDML_CONV* pConv, WDML_XACT* pXAct)
 908 {
 909     /* billx: two things to remove: the conv, and associated links.
 910      * Respond with another WM_DDE_TERMINATE iMsg.
 911      */
 912     if (!(pConv->instance->CBFflags & CBF_SKIP_DISCONNECTS))
 913     {
 914         WDML_InvokeCallback(pConv->instance, XTYP_DISCONNECT, 0, (HCONV)pConv, 0, 0,
 915                             0, 0, (pConv->wStatus & ST_ISSELF) ? 1 : 0);
 916     }
 917     PostMessageW(pConv->hwndClient, WM_DDE_TERMINATE, (WPARAM)pConv->hwndServer, 0);
 918     WDML_RemoveConv(pConv, WDML_SERVER_SIDE);
 919
 920     return WDML_QS_HANDLED;
 921 }
 922
 923 /******************************************************************
 924  *              WDML_ServerHandle
 925  *
 926  *
 927  */
 928 WDML_QUEUE_STATE WDML_ServerHandle(WDML_CONV* pConv, WDML_XACT* pXAct)
 929 {
 930     WDML_QUEUE_STATE    qs = WDML_QS_ERROR;
 931
 932     switch (pXAct->ddeMsg)
 933     {
 934     case WM_DDE_INITIATE:
 935         FIXME("WM_DDE_INITIATE shouldn't be there!\n");
 936         break;
 937     case WM_DDE_REQUEST:
 938         qs = WDML_ServerHandleRequest(pConv, pXAct);
 939         break;
 940
 941     case WM_DDE_ADVISE:
 942         qs = WDML_ServerHandleAdvise(pConv, pXAct);
 943         break;
 944
 945     case WM_DDE_UNADVISE:
 946         qs = WDML_ServerHandleUnadvise(pConv, pXAct);
 947         break;
 948
 949     case WM_DDE_EXECUTE:
 950         qs = WDML_ServerHandleExecute(pConv, pXAct);
 951         break;
 952
 953     case WM_DDE_POKE:
 954         qs = WDML_ServerHandlePoke(pConv, pXAct);
 955         break;
 956
 957     case WM_DDE_TERMINATE:
 958         qs = WDML_ServerHandleTerminate(pConv, pXAct);
 959         break;
 960
 961     case WM_DDE_ACK:
 962         WARN("Shouldn't receive a ACK message (never requests them). Ignoring it\n");
 963         break;
 964
 965     default:
 966         FIXME("Unsupported message %d\n", pXAct->ddeMsg);
 967     }
 968     return qs;
 969 }
 970
 971 /******************************************************************
 972  *              WDML_ServerConvProc
 973  *
 974  *
 975  */
 976 static LRESULT CALLBACK WDML_ServerConvProc(HWND hwndServer, UINT iMsg, WPARAM wParam, LPARAM lParam)
 977 {
 978     WDML_INSTANCE*      pInstance;
 979     WDML_CONV*          pConv;
 980     WDML_XACT*          pXAct = NULL;
 981
 982     TRACE("%p %04x %08lx %08lx\n", hwndServer, iMsg, wParam, lParam);
 983
 984     if (iMsg == WM_DESTROY)
 985     {
 986         pConv = WDML_GetConvFromWnd(hwndServer);
 987         if (pConv && !(pConv->wStatus & ST_TERMINATED))
 988         {
 989             WDML_ServerHandleTerminate(pConv, NULL);
 990         }
 991     }
 992     if (iMsg < WM_DDE_FIRST || iMsg > WM_DDE_LAST)
 993     {
 994         return IsWindowUnicode(hwndServer) ? DefWindowProcW(hwndServer, iMsg, wParam, lParam) :
 995                                              DefWindowProcA(hwndServer, iMsg, wParam, lParam);
 996     }
 997
 998     pInstance = WDML_GetInstanceFromWnd(hwndServer);
 999     pConv = WDML_GetConvFromWnd(hwndServer);
1000
1001     if (!pConv)
1002     {
1003         ERR("Got a message (%x) on a not known conversation, dropping request\n", iMsg);
1004         return 0;
1005     }
1006     if (pConv->hwndClient != WIN_GetFullHandle( (HWND)wParam ) || pConv->hwndServer != hwndServer)
1007     {
1008         ERR("mismatch between C/S windows and converstation\n");
1009         return 0;
1010     }
1011     if (pConv->instance != pInstance || pConv->instance == NULL)
1012     {
1013         ERR("mismatch in instances\n");
1014         return 0;
1015     }
1016
1017     switch (iMsg)
1018     {
1019     case WM_DDE_INITIATE:
1020         FIXME("WM_DDE_INITIATE message received!\n");
1021         break;
1022
1023     case WM_DDE_REQUEST:
1024         pXAct = WDML_ServerQueueRequest(pConv, lParam);
1025         break;
1026
1027     case WM_DDE_ADVISE:
1028         pXAct = WDML_ServerQueueAdvise(pConv, lParam);
1029         break;
1030
1031     case WM_DDE_UNADVISE:
1032         pXAct = WDML_ServerQueueUnadvise(pConv, lParam);
1033         break;
1034
1035     case WM_DDE_EXECUTE:
1036         pXAct = WDML_ServerQueueExecute(pConv, lParam);
1037         break;
1038
1039     case WM_DDE_POKE:
1040         pXAct = WDML_ServerQueuePoke(pConv, lParam);
1041         break;
1042
1043     case WM_DDE_TERMINATE:
1044         pXAct = WDML_ServerQueueTerminate(pConv, lParam);
1045         break;
1046
1047     case WM_DDE_ACK:
1048         WARN("Shouldn't receive a ACK message (never requests them). Ignoring it\n");
1049         break;
1050
1051     default:
1052         FIXME("Unsupported message %x\n", iMsg);
1053         break;
1054     }
1055
1056     if (pXAct)
1057     {
1058         pXAct->lParam = lParam;
1059
1060         if ((pConv->wStatus & ST_BLOCKED) || WDML_ServerHandle(pConv, pXAct) == WDML_QS_BLOCK)
1061         {
1062             TRACE("Transactions are blocked, add to the queue and exit\n");
1063             WDML_QueueTransaction(pConv, pXAct);
1064         }
1065         else
1066         {
1067             WDML_FreeTransaction(pInstance, pXAct, TRUE);
1068         }
1069     }
1070     else
1071         pConv->instance->lastError = DMLERR_MEMORY_ERROR;
1072
1073     return 0;
1074 }