misc/ddeml.c

   1 /*
   2  * DDEML library
   3  *
   4  * Copyright 1997 Alexandre Julliard
   5  * Copyright 1997 Len White
   6  * Copyright 1999 Keith Matthews
   7  */
   8
   9 /* Only empty stubs for now */
  10
  11 #include <stdlib.h>
  12 #include <strings.h>
  13 #include "ddeml.h"
  14 #include "debug.h"
  15 #include "windows.h"
  16 #include "wintypes.h"
  17 #include "winerror.h"
  18 #include "heap.h"
  19 #include "shm_semaph.h"
  20
  21 /* Has defined in atom.c file.
  22  */
  23 #define MAX_ATOM_LEN              255
  24
  25 /* Maximum buffer size ( including the '\0' ).
  26  */
  27 #define MAX_BUFFER_LEN            (MAX_ATOM_LEN + 1)
  28
  29
  30 static DDE_HANDLE_ENTRY *DDE_Handle_Table_Base = NULL;
  31 static LPDWORD          DDE_Max_Assigned_Instance = 0;  // OK for present, may have to worry about wrap-around later
  32 static const char       inst_string[]= "DDEMaxInstance";
  33 static LPCWSTR          DDEInstanceAccess = (LPCWSTR)&inst_string;
  34 static const char       handle_string[] = "DDEHandleAccess";
  35 static LPCWSTR          DDEHandleAccess = (LPCWSTR)&handle_string;
  36 static HANDLE32         inst_count_mutex = 0;
  37 static HANDLE32         handle_mutex = 0;
  38        DDE_HANDLE_ENTRY *this_instance;
  39        SECURITY_ATTRIBUTES *s_att= NULL;
  40        DWORD            err_no = 0;
  41
  42 /*  typedef struct {
  43         DWORD           nLength;
  44         LPVOID          lpSecurityDescriptor;
  45         BOOL32          bInheritHandle;
  46 }       SECURITY_ATTRIBUTES; */
  47
  48 #define TRUE    1
  49 #define FALSE   0
  50
  51
  52
  53 /* This is a simple list to keep track of the strings created
  54  * by DdeCreateStringHandle.  The list is used to free
  55  * the strings whenever DdeUninitialize is called.
  56  * This mechanism is not complete and does not handle multiple instances.
  57  * Most of the DDE API use a DWORD parameter indicating which instance
  58  * of a given program is calling them.  The API are supposed to
  59  * associate the data to the instance that created it.
  60  */
  61 typedef struct tagHSZNode HSZNode;
  62 struct tagHSZNode
  63 {
  64     HSZNode* next;
  65     HSZ hsz;
  66 };
  67
  68 /* Start off the list pointer with a NULL.
  69  */
  70 static HSZNode* pHSZNodes = NULL;
  71
  72
  73 /******************************************************************************
  74  *            RemoveHSZNodes    (INTERNAL)
  75  *
  76  * Remove a node from the list of HSZ nodes.
  77  *
  78  ******************************************************************************
  79  *
  80  *      Change History
  81  *
  82  *  Vn       Date       Author                  Comment
  83  *
  84  *  1.0      Dec 1998  Corel/Macadamian    Initial version
  85  *
  86  */
  87 static void RemoveHSZNode( DWORD idInst, HSZ hsz )
  88 {
  89     HSZNode* pPrev = NULL;
  90     HSZNode* pCurrent = NULL;
  91
  92     /* Set the current node at the start of the list.
  93      */
  94     pCurrent = pHSZNodes;
  95     /* While we have more nodes.
  96      */
  97     while( pCurrent != NULL )
  98     {
  99         /* If we found the node we were looking for.
 100          */
 101         if( pCurrent->hsz == hsz )
 102         {
 103             /* Remove the node.
 104              */
 105             /* If the first node in the list is to to be removed.
 106              * Set the global list pointer to the next node.
 107              */
 108             if( pCurrent == pHSZNodes )
 109             {
 110                 pHSZNodes = pCurrent->next;
 111             }
 112             /* Just fix the pointers has to skip the current
 113              * node so we can delete it.
 114              */
 115             else
 116             {
 117                 pPrev->next = pCurrent->next;
 118             }
 119             /* Destroy this node.
 120              */
 121             free( pCurrent );
 122             break;
 123         }
 124         /* Save the previous node pointer.
 125          */
 126         pPrev = pCurrent;
 127         /* Move on to the next node.
 128          */
 129         pCurrent = pCurrent->next;
 130     }
 131 }
 132
 133 /******************************************************************************
 134  *            FreeAndRemoveHSZNodes    (INTERNAL)
 135  *
 136  * Frees up all the strings still allocated in the list and
 137  * remove all the nodes from the list of HSZ nodes.
 138  *
 139  ******************************************************************************
 140  *
 141  *      Change History
 142  *
 143  *  Vn       Date       Author                  Comment
 144  *
 145  *  1.0      Dec 1998  Corel/Macadamian    Initial version
 146  *
 147  */
 148 static void FreeAndRemoveHSZNodes( DWORD idInst )
 149 {
 150     /* Free any strings created in this instance.
 151      */
 152     while( pHSZNodes != NULL )
 153     {
 154         DdeFreeStringHandle32( idInst, pHSZNodes->hsz );
 155     }
 156 }
 157
 158 /******************************************************************************
 159  *            InsertHSZNode    (INTERNAL)
 160  *
 161  * Insert a node to the head of the list.
 162  *
 163  ******************************************************************************
 164  *
 165  *      Change History
 166  *
 167  *  Vn       Date       Author                  Comment
 168  *
 169  *  1.0      Dec 1998  Corel/Macadamian    Initial version
 170  *
 171  */
 172 static void InsertHSZNode( DWORD idInst, HSZ hsz )
 173 {
 174     if( hsz != 0 )
 175     {
 176         HSZNode* pNew = NULL;
 177         /* Create a new node for this HSZ.
 178          */
 179         pNew = (HSZNode*) malloc( sizeof( HSZNode ) );
 180         if( pNew != NULL )
 181         {
 182             /* Set the handle value.
 183              */
 184             pNew->hsz = hsz;
 185             /* Attach the node to the head of the list.
 186              */
 187             pNew->next = pHSZNodes;
 188             /* The new node is now at the head of the list
 189              * so set the global list pointer to it.
 190              */
 191             pHSZNodes = pNew;
 192         }
 193     }
 194 }
 195
 196 /******************************************************************************
 197  *      Release_reserved_mutex
 198  *
 199  *      generic routine to release a reserved mutex
 200  *
 201  *
 202  ******************************************************************************
 203  *
 204  *      Change History
 205  *
 206  *  Vn       Date       Author                  Comment
 207  *
 208  *  1.0      Jan 1999  Keith Matthews        Initial version
 209  *
 210  */
 211  DWORD Release_reserved_mutex (HANDLE32 mutex, LPTSTR mutex_name, BOOL32 release_handle_m, BOOL32 release_this_i )
 212 {
 213         ReleaseMutex(mutex);
 214         if ( (err_no=GetLastError()) != 0 )
 215         {
 216                 ERR(ddeml,"ReleaseMutex failed - %s mutex %li\n",mutex_name,err_no);
 217                 HeapFree(GetProcessHeap(), 0, this_instance);
 218                 if ( release_handle_m )
 219                 {
 220                         ReleaseMutex(handle_mutex);
 221                 }
 222                 return DMLERR_SYS_ERROR;
 223          }
 224         if ( release_this_i )
 225         {
 226                 HeapFree(GetProcessHeap(), 0, this_instance);
 227         }
 228         return DMLERR_NO_ERROR;
 229 }
 230
 231 /******************************************************************************
 232  *              IncrementInstanceId
 233  *
 234  *      generic routine to increment the max instance Id and allocate a new application instance
 235  *
 236  ******************************************************************************
 237  *
 238  *      Change History
 239  *
 240  *  Vn       Date       Author                  Comment
 241  *
 242  *  1.0      Jan 1999  Keith Matthews        Initial version
 243  *
 244  */
 245 DWORD IncrementInstanceId()
 246 {
 247         SECURITY_ATTRIBUTES s_attrib;
 248         /*  Need to set up Mutex in case it is not already present */
 249         // increment handle count & get value
 250         if ( !inst_count_mutex )
 251         {
 252                 s_attrib.bInheritHandle = TRUE;
 253                 s_attrib.lpSecurityDescriptor = NULL;
 254                 s_attrib.nLength = sizeof(s_attrib);
 255                 inst_count_mutex = CreateMutex32W(&s_attrib,1,DDEInstanceAccess); // 1st time through
 256         } else {
 257                 WaitForSingleObject(inst_count_mutex,1000); // subsequent calls
 258                 /*  FIXME  - needs refinement with popup for timeout, also is timeout interval OK */
 259         }
 260         if ( (err_no=GetLastError()) == ERROR_INVALID_HANDLE )
 261         {
 262                 ERR(ddeml,"CreateMutex failed - inst_count %li\n",err_no);
 263                 err_no=Release_reserved_mutex (handle_mutex,"handle_mutex",0,1);
 264                 return DMLERR_SYS_ERROR;
 265         }
 266         DDE_Max_Assigned_Instance++;
 267         this_instance->Instance_id = DDE_Max_Assigned_Instance;
 268         if (Release_reserved_mutex(inst_count_mutex,"instance_count",1,0)) return DMLERR_SYS_ERROR;
 269         return DMLERR_NO_ERROR;
 270 }
 271
 272 /******************************************************************************
 273  *            DdeInitialize16   (DDEML.2)
 274  */
 275 UINT16 WINAPI DdeInitialize16( LPDWORD pidInst, PFNCALLBACK16 pfnCallback,
 276                                DWORD afCmd, DWORD ulRes)
 277 {
 278     return (UINT16)DdeInitialize32A(pidInst,(PFNCALLBACK32)pfnCallback,
 279                                     afCmd, ulRes);
 280 }
 281
 282
 283 /******************************************************************************
 284  *            DdeInitialize32A   (USER32.106)
 285  */
 286 UINT32 WINAPI DdeInitialize32A( LPDWORD pidInst, PFNCALLBACK32 pfnCallback,
 287                                 DWORD afCmd, DWORD ulRes )
 288 {
 289     return DdeInitialize32W(pidInst,pfnCallback,afCmd,ulRes);
 290 }
 291
 292
 293 /******************************************************************************
 294  * DdeInitialize32W [USER32.107]
 295  * Registers an application with the DDEML
 296  *
 297  * PARAMS
 298  *    pidInst     [I] Pointer to instance identifier
 299  *    pfnCallback [I] Pointer to callback function
 300  *    afCmd       [I] Set of command and filter flags
 301  *    ulRes       [I] Reserved
 302  *
 303  * RETURNS
 304  *    Success: DMLERR_NO_ERROR
 305  *    Failure: DMLERR_DLL_USAGE, DMLERR_INVALIDPARAMETER, DMLERR_SYS_ERROR
 306  *
 307  ******************************************************************************
 308  *
 309  *      Change History
 310  *
 311  *  Vn       Date       Author                  Comment
 312  *
 313  *  1.0      Pre 1998  Alexandre/Len         Initial Stub
 314  *  1.1      Jan 1999  Keith Matthews        Initial (near-)complete version
 315  *
 316  */
 317 UINT32 WINAPI DdeInitialize32W( LPDWORD pidInst, PFNCALLBACK32 pfnCallback,
 318                                 DWORD afCmd, DWORD ulRes )
 319 {
 320     DDE_HANDLE_ENTRY *reference_inst;
 321     SECURITY_ATTRIBUTES s_attrib;
 322     s_att = &s_attrib;
 323
 324 //  probably not really capable of handling mutliple processes, but should handle
 325 //      multiple instances within one process
 326
 327     if( ulRes )
 328     {
 329         ERR(dde, "Reserved value not zero?  What does this mean?\n");
 330         FIXME(ddeml, "(%p,%p,0x%lx,%ld): stub\n",pidInst,pfnCallback,afCmd,ulRes);
 331         /* trap this and no more until we know more */
 332         return DMLERR_NO_ERROR;
 333     }
 334     if (!pfnCallback )
 335     {
 336         /* can't set up the instance with nothing to act as a callback */
 337         TRACE(ddeml,"No callback provided\n");
 338         return DMLERR_INVALIDPARAMETER; /* might be DMLERR_DLL_USAGE */
 339      }
 340
 341      /* grab enough heap for one control struct - not really necessary for re-initialise
 342         but allows us to use same validation routines */
 343      this_instance= (DDE_HANDLE_ENTRY*)HeapAlloc( SystemHeap, 0, sizeof(DDE_HANDLE_ENTRY) );
 344      if ( this_instance == NULL )
 345      {
 346         // catastrophe !! warn user & abort
 347         ERR (ddeml,"Instance create failed - out of memory\n");
 348         return DMLERR_SYS_ERROR;
 349      }
 350      this_instance->Next_Entry = NULL;
 351      this_instance->Monitor=(afCmd|APPCLASS_MONITOR);
 352
 353      // messy bit, spec implies that 'Client Only' can be set in 2 different ways, catch 1 here
 354
 355      this_instance->Client_only=afCmd&APPCMD_CLIENTONLY;
 356      this_instance->Instance_id = pidInst; // May need to add calling proc Id
 357      this_instance->CallBack=*pfnCallback;
 358      this_instance->Txn_count=0;
 359      this_instance->Unicode = TRUE;
 360      this_instance->Win16 = FALSE;
 361      this_instance->Monitor_flags = afCmd & MF_MASK;
 362
 363      // isolate CBF flags in one go, expect this will go the way of all attempts to be clever !!
 364
 365      this_instance->CBF_Flags=afCmd^((afCmd&MF_MASK)|((afCmd&APPCMD_MASK)|(afCmd&APPCLASS_MASK)));
 366
 367      if ( ! this_instance->Client_only )
 368      {
 369
 370         // Check for other way of setting Client-only !!
 371
 372         this_instance->Client_only=(this_instance->CBF_Flags&CBF_FAIL_ALLSVRXACTIONS)
 373                         ==CBF_FAIL_ALLSVRXACTIONS;
 374      }
 375
 376      TRACE(ddeml,"instance created - checking validity \n");
 377
 378     if( *pidInst == 0 ) {
 379         /*  Initialisation of new Instance Identifier */
 380         TRACE(ddeml,"new instance, callback %p flags %lX\n",pfnCallback,afCmd);
 381         /*  Need to set up Mutex in case it is not already present */
 382         s_att->bInheritHandle = TRUE;
 383         s_att->lpSecurityDescriptor = NULL;
 384         s_att->nLength = sizeof(s_att);
 385         handle_mutex = CreateMutex32W(s_att,1,DDEHandleAccess);
 386         if ( (err_no=GetLastError()) == ERROR_INVALID_HANDLE )
 387         {
 388                 ERR(ddeml,"CreateMutex failed - handle list  %li\n",err_no);
 389                 HeapFree(GetProcessHeap(), 0, this_instance);
 390                 return DMLERR_SYS_ERROR;
 391         }
 392         TRACE(ddeml,"Handle Mutex created/reserved\n");
 393         if (DDE_Handle_Table_Base == NULL )
 394         {
 395                 /* can't be another instance in this case, assign to the base pointer */
 396                 DDE_Handle_Table_Base= this_instance;
 397
 398                 // since first must force filter of XTYP_CONNECT and XTYP_WILDCONNECT for
 399                 //    present
 400                 //   -------------------------------      NOTE NOTE NOTE    --------------------------
 401                 //
 402                 //         the manual is not clear if this condition
 403                 //      applies to the first call to DdeInitialize from an application, or the
 404                 //      first call for a given callback !!!
 405                 //
 406
 407                 this_instance->CBF_Flags=this_instance->CBF_Flags|APPCMD_FILTERINITS;
 408                 TRACE(ddeml,"First application instance detected OK\n");
 409                 // allocate new instance ID
 410                 if ((err_no = IncrementInstanceId()) ) return err_no;
 411         } else {
 412                 /* really need to chain the new one in to the latest here, but after checking conditions
 413                 such as trying to start a conversation from an application trying to monitor */
 414                 reference_inst =  DDE_Handle_Table_Base;
 415                 TRACE(ddeml,"Subsequent application instance - starting checks\n");
 416                 while ( reference_inst->Next_Entry != NULL )
 417                 {
 418                         //
 419                         //      This set of tests will work if application uses same instance Id
 420                         //      at application level once allocated - which is what manual implies
 421                         //      should happen. If someone tries to be
 422                         //      clever (lazy ?) it will fail to pick up that later calls are for
 423                         //      the same application - should we trust them ?
 424                         //
 425                         if ( this_instance->Instance_id == reference_inst->Instance_id)
 426                         {
 427                                 // Check 1 - must be same Client-only state
 428
 429                                 if ( this_instance->Client_only != reference_inst->Client_only)
 430                                 {
 431                                         if ( Release_reserved_mutex(handle_mutex,"handle_mutex",0,1))
 432                                                 return DMLERR_SYS_ERROR;
 433                                         return DMLERR_DLL_USAGE;
 434                                 }
 435
 436                                 // Check 2 - cannot use 'Monitor' with any non-monitor modes
 437
 438                                 if ( this_instance->Monitor != reference_inst->Monitor)
 439                                 {
 440                                         if ( Release_reserved_mutex(handle_mutex,"handle_mutex",0,1))
 441                                                 return DMLERR_SYS_ERROR;
 442                                         return DMLERR_INVALIDPARAMETER;
 443                                 }
 444
 445                                 // Check 3 - must supply different callback address
 446
 447                                 if ( this_instance->CallBack == reference_inst->CallBack)
 448                                 {
 449                                         if ( Release_reserved_mutex(handle_mutex,"handle_mutex",0,1))
 450                                                 return DMLERR_SYS_ERROR;
 451                                         return DMLERR_DLL_USAGE;
 452                                 }
 453                         }
 454                         reference_inst = reference_inst->Next_Entry;
 455                 }
 456                 //  All cleared, add to chain
 457
 458                 TRACE(ddeml,"Application Instance checks finished\n");
 459                 if ((err_no = IncrementInstanceId())) return err_no;
 460                 if ( Release_reserved_mutex(handle_mutex,"handle_mutex",0,0)) return DMLERR_SYS_ERROR;
 461                 reference_inst->Next_Entry = this_instance;
 462         }
 463         pidInst = (LPDWORD)this_instance->Instance_id;
 464         TRACE(ddeml,"New application instance processing finished OK\n");
 465      } else {
 466         /* Reinitialisation situation   --- FIX  */
 467         TRACE(ddeml,"reinitialisation of (%p,%p,0x%lx,%ld): stub\n",pidInst,pfnCallback,afCmd,ulRes);
 468         WaitForSingleObject(handle_mutex,1000);
 469         if ( (err_no=GetLastError()) != 0 )
 470             {
 471
 472              /*  FIXME  - needs refinement with popup for timeout, also is timeout interval OK */
 473
 474                     ERR(ddeml,"WaitForSingleObject failed - handle list %li\n",err_no);
 475                     HeapFree(GetProcessHeap(), 0, this_instance);
 476                     return DMLERR_SYS_ERROR;
 477         }
 478         if (DDE_Handle_Table_Base == NULL )
 479         {
 480                 if ( Release_reserved_mutex(handle_mutex,"handle_mutex",0,1)) return DMLERR_SYS_ERROR;
 481                 return DMLERR_DLL_USAGE;
 482         }
 483         HeapFree(GetProcessHeap(), 0, this_instance); // finished - release heap space used as work store
 484         // can't reinitialise if we have initialised nothing !!
 485         reference_inst =  DDE_Handle_Table_Base;
 486         /* must first check if we have been given a valid instance to re-initialise !!  how do we do that ? */
 487         while ( reference_inst->Next_Entry != NULL )
 488         {
 489                 if ( pidInst == reference_inst->Instance_id && pfnCallback == reference_inst->CallBack )
 490                 {
 491                         // Check 1 - cannot change client-only mode if set via APPCMD_CLIENTONLY
 492
 493                         if (  reference_inst->Client_only )
 494                         {
 495                            if  ((reference_inst->CBF_Flags & CBF_FAIL_ALLSVRXACTIONS) != CBF_FAIL_ALLSVRXACTIONS)
 496                            {
 497                                 // i.e. Was set to Client-only and through APPCMD_CLIENTONLY
 498
 499                                 if ( ! ( afCmd & APPCMD_CLIENTONLY))
 500                                 {
 501                                         if ( Release_reserved_mutex(handle_mutex,"handle_mutex",0,1))
 502                                                 return DMLERR_SYS_ERROR;
 503                                         return DMLERR_DLL_USAGE;
 504                                 }
 505                            }
 506                         }
 507                         // Check 2 - cannot change monitor modes
 508
 509                         if ( this_instance->Monitor != reference_inst->Monitor)
 510                         {
 511                                 if ( Release_reserved_mutex(handle_mutex,"handle_mutex",0,1))
 512                                         return DMLERR_SYS_ERROR;
 513                                 return DMLERR_DLL_USAGE;
 514                         }
 515
 516                         // Check 3 - trying to set Client-only via APPCMD when not set so previously
 517
 518                         if (( afCmd&APPCMD_CLIENTONLY) && ! reference_inst->Client_only )
 519                         {
 520                                 if ( Release_reserved_mutex(handle_mutex,"handle_mutex",0,1))
 521                                         return DMLERR_SYS_ERROR;
 522                                 return DMLERR_DLL_USAGE;
 523                         }
 524                 }
 525         }
 526         //              All checked - change relevant flags
 527
 528         reference_inst->CBF_Flags = this_instance->CBF_Flags;
 529         reference_inst->Client_only = this_instance->Client_only;
 530         reference_inst->Monitor_flags = this_instance->Monitor_flags;
 531         if ( Release_reserved_mutex(handle_mutex,"handle_mutex",0,1))
 532                 return DMLERR_SYS_ERROR;
 533      }
 534
 535     return DMLERR_NO_ERROR;
 536 }
 537
 538
 539 /*****************************************************************
 540  *            DdeUninitialize16   (DDEML.3)
 541  */
 542 BOOL16 WINAPI DdeUninitialize16( DWORD idInst )
 543 {
 544     return (BOOL16)DdeUninitialize32( idInst );
 545 }
 546
 547
 548 /*****************************************************************
 549  * DdeUninitialize32 [USER32.119]  Frees DDEML resources
 550  *
 551  * PARAMS
 552  *    idInst [I] Instance identifier
 553  *
 554  * RETURNS
 555  *    Success: TRUE
 556  *    Failure: FALSE
 557  */
 558 BOOL32 WINAPI DdeUninitialize32( DWORD idInst )
 559 {
 560
 561     FIXME(ddeml, "(%ld): stub\n", idInst);
 562
 563     /* Free the nodes that were not freed by this instance
 564      * and remove the nodes from the list of HSZ nodes.
 565      */
 566     FreeAndRemoveHSZNodes( idInst );
 567
 568     return TRUE;
 569 }
 570
 571
 572 /*****************************************************************
 573  * DdeConnectList16 [DDEML.4]
 574  */
 575 HCONVLIST WINAPI DdeConnectList16( DWORD idInst, HSZ hszService, HSZ hszTopic,
 576                  HCONVLIST hConvList, LPCONVCONTEXT16 pCC )
 577 {
 578     return DdeConnectList32(idInst, hszService, hszTopic, hConvList,
 579                             (LPCONVCONTEXT32)pCC);
 580 }
 581
 582
 583 /******************************************************************************
 584  * DdeConnectList32 [USER32.93]  Establishes conversation with DDE servers
 585  *
 586  * PARAMS
 587  *    idInst     [I] Instance identifier
 588  *    hszService [I] Handle to service name string
 589  *    hszTopic   [I] Handle to topic name string
 590  *    hConvList  [I] Handle to conversation list
 591  *    pCC        [I] Pointer to structure with context data
 592  *
 593  * RETURNS
 594  *    Success: Handle to new conversation list
 595  *    Failure: 0
 596  */
 597 HCONVLIST WINAPI DdeConnectList32( DWORD idInst, HSZ hszService, HSZ hszTopic,
 598                  HCONVLIST hConvList, LPCONVCONTEXT32 pCC )
 599 {
 600     FIXME(ddeml, "(%ld,%ld,%ld,%ld,%p): stub\n", idInst, hszService, hszTopic,
 601           hConvList,pCC);
 602     return 1;
 603 }
 604
 605
 606 /*****************************************************************
 607  * DdeQueryNextServer16 [DDEML.5]
 608  */
 609 HCONV WINAPI DdeQueryNextServer16( HCONVLIST hConvList, HCONV hConvPrev )
 610 {
 611     return DdeQueryNextServer32(hConvList, hConvPrev);
 612 }
 613
 614
 615 /*****************************************************************
 616  * DdeQueryNextServer32 [USER32.112]
 617  */
 618 HCONV WINAPI DdeQueryNextServer32( HCONVLIST hConvList, HCONV hConvPrev )
 619 {
 620     FIXME(ddeml, "(%ld,%ld): stub\n",hConvList,hConvPrev);
 621     return 0;
 622 }
 623
 624 /*****************************************************************
 625  * DdeQueryString32A [USER32.113]
 626  */
 627 DWORD WINAPI DdeQueryString32A(DWORD idInst, HSZ hsz, LPSTR psz, DWORD cchMax, INT32 iCodePage)
 628 {
 629     DWORD ret = 0;
 630     CHAR pString[MAX_BUFFER_LEN];
 631
 632     FIXME(ddeml,
 633          "(%ld, 0x%lx, %p, %ld, %d): stub\n",
 634          idInst,
 635          hsz,
 636          psz,
 637          cchMax,
 638          iCodePage);
 639
 640     if( iCodePage == CP_WINANSI )
 641     {
 642         /* If psz is null, we have to return only the length
 643          * of the string.
 644          */
 645         if( psz == NULL )
 646         {
 647             psz = pString;
 648             cchMax = MAX_BUFFER_LEN;
 649 }
 650
 651         ret = GlobalGetAtomName32A( hsz, (LPSTR)psz, cchMax );
 652     }
 653
 654     return ret;
 655 }
 656
 657 /*****************************************************************
 658  * DdeQueryString32W [USER32.114]
 659  */
 660 DWORD WINAPI DdeQueryString32W(DWORD idInst, HSZ hsz, LPWSTR psz, DWORD cchMax, INT32 iCodePage)
 661 {
 662     DWORD ret = 0;
 663     WCHAR pString[MAX_BUFFER_LEN];
 664     int factor = 1;
 665
 666     FIXME(ddeml,
 667          "(%ld, 0x%lx, %p, %ld, %d): stub\n",
 668          idInst,
 669          hsz,
 670          psz,
 671          cchMax,
 672          iCodePage);
 673
 674     if( iCodePage == CP_WINUNICODE )
 675     {
 676         /* If psz is null, we have to return only the length
 677          * of the string.
 678          */
 679         if( psz == NULL )
 680         {
 681             psz = pString;
 682             cchMax = MAX_BUFFER_LEN;
 683             /* Note: According to documentation if the psz parameter
 684              * was NULL this API must return the length of the string in bytes.
 685              */
 686             factor = (int) sizeof(WCHAR)/sizeof(BYTE);
 687         }
 688         ret = GlobalGetAtomName32W( hsz, (LPWSTR)psz, cchMax ) * factor;
 689     }
 690     return ret;
 691 }
 692
 693
 694 /*****************************************************************
 695  *            DdeDisconnectList (DDEML.6)
 696  */
 697 BOOL16 WINAPI DdeDisconnectList16( HCONVLIST hConvList )
 698 {
 699     return (BOOL16)DdeDisconnectList32(hConvList);
 700 }
 701
 702
 703 /******************************************************************************
 704  * DdeDisconnectList32 [USER32.98]  Destroys list and terminates conversations
 705  *
 706  * RETURNS
 707  *    Success: TRUE
 708  *    Failure: FALSE
 709  */
 710 BOOL32 WINAPI DdeDisconnectList32(
 711     HCONVLIST hConvList) /* [in] Handle to conversation list */
 712 {
 713     FIXME(ddeml, "(%ld): stub\n", hConvList);
 714     return TRUE;
 715 }
 716
 717
 718 /*****************************************************************
 719  *            DdeConnect16   (DDEML.7)
 720  */
 721 HCONV WINAPI DdeConnect16( DWORD idInst, HSZ hszService, HSZ hszTopic,
 722                            LPCONVCONTEXT16 pCC )
 723 {
 724     FIXME( ddeml, "empty stub\n" );
 725     return 0;
 726 }
 727
 728
 729 /*****************************************************************
 730  *            DdeConnect32   (USER32.92)
 731  */
 732 HCONV WINAPI DdeConnect32( DWORD idInst, HSZ hszService, HSZ hszTopic,
 733                            LPCONVCONTEXT32 pCC )
 734 {
 735     FIXME(ddeml, "(0x%lx,%ld,%ld,%p): stub\n",idInst,hszService,hszTopic,
 736           pCC);
 737     return 0;
 738 }
 739
 740
 741 /*****************************************************************
 742  *            DdeDisconnect16   (DDEML.8)
 743  */
 744 BOOL16 WINAPI DdeDisconnect16( HCONV hConv )
 745 {
 746     return (BOOL16)DdeDisconnect32( hConv );
 747 }
 748
 749 /*****************************************************************
 750  *            DdeSetUserHandle (DDEML.10)
 751  */
 752 BOOL16 WINAPI DdeSetUserHandle( HCONV hConv, DWORD id, DWORD hUser )
 753 {
 754     FIXME( ddeml, "(%ld,%ld,%ld): stub\n",hConv,id, hUser );
 755     return 0;
 756 }
 757
 758 /*****************************************************************
 759  *            DdeCreateDataHandle16 (DDEML.14)
 760  */
 761 HDDEDATA WINAPI DdeCreateDataHandle16( DWORD idInst, LPBYTE pSrc, DWORD cb,
 762                                      DWORD cbOff, HSZ hszItem, UINT16 wFmt,
 763                                      UINT16 afCmd )
 764 {
 765     return DdeCreateDataHandle32(idInst,
 766                                 pSrc,
 767                                 cb,
 768                                 cbOff,
 769                                 hszItem,
 770                                 wFmt,
 771                                 afCmd);
 772 }
 773
 774 /*****************************************************************
 775  *            DdeCreateDataHandle32 (USER32.94)
 776  */
 777 HDDEDATA WINAPI DdeCreateDataHandle32( DWORD idInst, LPBYTE pSrc, DWORD cb,
 778                                        DWORD cbOff, HSZ hszItem, UINT32 wFmt,
 779                                        UINT32 afCmd )
 780 {
 781     FIXME( ddeml,
 782           "(%ld,%p,%ld,%ld,0x%lx,%d,%d): stub\n",
 783           idInst,
 784           pSrc,
 785           cb,
 786           cbOff,
 787            hszItem,
 788           wFmt,
 789           afCmd );
 790
 791     return 0;
 792 }
 793
 794 /*****************************************************************
 795  *            DdeDisconnect32   (USER32.97)
 796  */
 797 BOOL32 WINAPI DdeDisconnect32( HCONV hConv )
 798 {
 799     FIXME( ddeml, "empty stub\n" );
 800     return 0;
 801 }
 802
 803
 804 /*****************************************************************
 805  *            DdeReconnect   (DDEML.37) (USER32.115)
 806  */
 807 HCONV WINAPI DdeReconnect( HCONV hConv )
 808 {
 809     FIXME( ddeml, "empty stub\n" );
 810     return 0;
 811 }
 812
 813
 814 /*****************************************************************
 815  *            DdeCreateStringHandle16   (DDEML.21)
 816  */
 817 HSZ WINAPI DdeCreateStringHandle16( DWORD idInst, LPCSTR str, INT16 codepage )
 818 {
 819     return DdeCreateStringHandle32A( idInst, str, codepage );
 820 }
 821
 822
 823 /*****************************************************************
 824  * DdeCreateStringHandle32A [USER32.95]
 825  *
 826  * RETURNS
 827  *    Success: String handle
 828  *    Failure: 0
 829  */
 830 HSZ WINAPI DdeCreateStringHandle32A( DWORD idInst, LPCSTR psz, INT32 codepage )
 831 {
 832   HSZ hsz = 0;
 833   TRACE(ddeml, "(%ld,%s,%d): stub\n",idInst,debugstr_a(psz),codepage);
 834
 835   if (codepage==CP_WINANSI)
 836   {
 837       hsz = GlobalAddAtom32A (psz);
 838       /* Save the handle so we know to clean it when
 839        * uninitialize is called.
 840        */
 841       InsertHSZNode( idInst, hsz );
 842       return hsz;
 843   }
 844     return 0;
 845 }
 846
 847
 848 /******************************************************************************
 849  * DdeCreateStringHandle32W [USER32.96]  Creates handle to identify string
 850  *
 851  * RETURNS
 852  *    Success: String handle
 853  *    Failure: 0
 854  */
 855 HSZ WINAPI DdeCreateStringHandle32W(
 856     DWORD idInst,   /* [in] Instance identifier */
 857     LPCWSTR psz,    /* [in] Pointer to string */
 858     INT32 codepage) /* [in] Code page identifier */
 859 {
 860   HSZ hsz = 0;
 861
 862     FIXME(ddeml, "(%ld,%s,%d): stub\n",idInst,debugstr_w(psz),codepage);
 863
 864   if (codepage==CP_WINUNICODE)
 865   {
 866       hsz = GlobalAddAtom32W (psz);
 867       /* Save the handle so we know to clean it when
 868        * uninitialize is called.
 869        */
 870       InsertHSZNode( idInst, hsz );
 871       return hsz;
 872 }
 873   return 0;
 874 }
 875
 876
 877 /*****************************************************************
 878  *            DdeFreeStringHandle16   (DDEML.22)
 879  */
 880 BOOL16 WINAPI DdeFreeStringHandle16( DWORD idInst, HSZ hsz )
 881 {
 882     return (BOOL32)DdeFreeStringHandle32( idInst, hsz );
 883 }
 884
 885
 886 /*****************************************************************
 887  *            DdeFreeStringHandle32   (USER32.101)
 888  * RETURNS: success: nonzero
 889  *          fail:    zero
 890  */
 891 BOOL32 WINAPI DdeFreeStringHandle32( DWORD idInst, HSZ hsz )
 892 {
 893     TRACE( ddeml, "(%ld,%ld): stub\n",idInst, hsz );
 894     /* Remove the node associated with this HSZ.
 895      */
 896     RemoveHSZNode( idInst, hsz );
 897     /* Free the string associated with this HSZ.
 898      */
 899     return GlobalDeleteAtom (hsz) ? 0 : hsz;
 900 }
 901
 902
 903 /*****************************************************************
 904  *            DdeFreeDataHandle16   (DDEML.19)
 905  */
 906 BOOL16 WINAPI DdeFreeDataHandle16( HDDEDATA hData )
 907 {
 908     return (BOOL32)DdeFreeDataHandle32( hData );
 909 }
 910
 911
 912 /*****************************************************************
 913  *            DdeFreeDataHandle32   (USER32.100)
 914  */
 915 BOOL32 WINAPI DdeFreeDataHandle32( HDDEDATA hData )
 916 {
 917     FIXME( ddeml, "empty stub\n" );
 918     return TRUE;
 919 }
 920
 921
 922
 923
 924 /*****************************************************************
 925  *            DdeKeepStringHandle16   (DDEML.24)
 926  */
 927 BOOL16 WINAPI DdeKeepStringHandle16( DWORD idInst, HSZ hsz )
 928 {
 929     return (BOOL32)DdeKeepStringHandle32( idInst, hsz );
 930 }
 931
 932
 933 /*****************************************************************
 934  *            DdeKeepStringHandle32  (USER32.108)
 935  */
 936 BOOL32 WINAPI DdeKeepStringHandle32( DWORD idInst, HSZ hsz )
 937 {
 938     FIXME( ddeml, "empty stub\n" );
 939     return TRUE;
 940 }
 941
 942
 943 /*****************************************************************
 944  *            DdeClientTransaction16  (DDEML.11)
 945  */
 946 HDDEDATA WINAPI DdeClientTransaction16( LPVOID pData, DWORD cbData,
 947                                         HCONV hConv, HSZ hszItem, UINT16 wFmt,
 948                                         UINT16 wType, DWORD dwTimeout,
 949                                         LPDWORD pdwResult )
 950 {
 951     return DdeClientTransaction32( (LPBYTE)pData, cbData, hConv, hszItem,
 952                                    wFmt, wType, dwTimeout, pdwResult );
 953 }
 954
 955
 956 /*****************************************************************
 957  *            DdeClientTransaction32  (USER32.90)
 958  */
 959 HDDEDATA WINAPI DdeClientTransaction32( LPBYTE pData, DWORD cbData,
 960                                         HCONV hConv, HSZ hszItem, UINT32 wFmt,
 961                                         UINT32 wType, DWORD dwTimeout,
 962                                         LPDWORD pdwResult )
 963 {
 964     FIXME( ddeml, "empty stub\n" );
 965     return 0;
 966 }
 967
 968 /*****************************************************************
 969  *            DdeAbandonTransaction (DDEML.12)
 970  */
 971 BOOL16 WINAPI DdeAbandonTransaction( DWORD idInst, HCONV hConv,
 972                                      DWORD idTransaction )
 973 {
 974     FIXME( ddeml, "empty stub\n" );
 975     return 0;
 976 }
 977
 978
 979 /*****************************************************************
 980  * DdePostAdvise16 [DDEML.13]
 981  */
 982 BOOL16 WINAPI DdePostAdvise16( DWORD idInst, HSZ hszTopic, HSZ hszItem )
 983 {
 984     return (BOOL16)DdePostAdvise32(idInst, hszTopic, hszItem);
 985 }
 986
 987
 988 /******************************************************************************
 989  * DdePostAdvise32 [USER32.110]  Send transaction to DDE callback function.
 990  *
 991  * RETURNS
 992  *    Success: TRUE
 993  *    Failure: FALSE
 994  */
 995 BOOL32 WINAPI DdePostAdvise32(
 996     DWORD idInst, /* [in] Instance identifier */
 997     HSZ hszTopic, /* [in] Handle to topic name string */
 998     HSZ hszItem)  /* [in] Handle to item name string */
 999 {
1000     FIXME(ddeml, "(%ld,%ld,%ld): stub\n",idInst,hszTopic,hszItem);
1001     return TRUE;
1002 }
1003
1004
1005 /*****************************************************************
1006  *            DdeAddData (DDEML.15)
1007  */
1008 HDDEDATA WINAPI DdeAddData( HDDEDATA hData, LPBYTE pSrc, DWORD cb,
1009                             DWORD cbOff )
1010 {
1011     FIXME( ddeml, "empty stub\n" );
1012     return 0;
1013 }
1014
1015
1016 /******************************************************************************
1017  * DdeGetData32 [USER32.102]  Copies data from DDE object ot local buffer
1018  *
1019  * RETURNS
1020  *    Size of memory object associated with handle
1021  */
1022 DWORD WINAPI DdeGetData32(
1023     HDDEDATA hData, /* [in] Handle to DDE object */
1024     LPBYTE pDst,    /* [in] Pointer to destination buffer */
1025     DWORD cbMax,    /* [in] Amount of data to copy */
1026     DWORD cbOff)    /* [in] Offset to beginning of data */
1027 {
1028     FIXME(ddeml, "(%ld,%p,%ld,%ld): stub\n",hData,pDst,cbMax,cbOff);
1029     return cbMax;
1030 }
1031
1032
1033 /*****************************************************************
1034  * DdeGetData16 [DDEML.16]
1035  */
1036 DWORD WINAPI DdeGetData16(
1037     HDDEDATA hData,
1038     LPBYTE pDst,
1039     DWORD cbMax,
1040     DWORD cbOff)
1041 {
1042     return DdeGetData32(hData, pDst, cbMax, cbOff);
1043 }
1044
1045
1046 /*****************************************************************
1047  *            DdeAccessData16 (DDEML.17)
1048  */
1049 LPBYTE WINAPI DdeAccessData16( HDDEDATA hData, LPDWORD pcbDataSize )
1050 {
1051      return DdeAccessData32(hData, pcbDataSize);
1052 }
1053
1054 /*****************************************************************
1055  *            DdeAccessData32 (USER32.88)
1056  */
1057 LPBYTE WINAPI DdeAccessData32( HDDEDATA hData, LPDWORD pcbDataSize )
1058 {
1059      FIXME( ddeml, "(%ld,%p): stub\n", hData, pcbDataSize);
1060      return 0;
1061 }
1062
1063 /*****************************************************************
1064  *            DdeUnaccessData16 (DDEML.18)
1065  */
1066 BOOL16 WINAPI DdeUnaccessData16( HDDEDATA hData )
1067 {
1068      return DdeUnaccessData32(hData);
1069 }
1070
1071 /*****************************************************************
1072  *            DdeUnaccessData32 (USER32.118)
1073  */
1074 BOOL32 WINAPI DdeUnaccessData32( HDDEDATA hData )
1075 {
1076      FIXME( ddeml, "(0x%lx): stub\n", hData);
1077
1078      return 0;
1079 }
1080
1081 /*****************************************************************
1082  *            DdeEnableCallback16 (DDEML.26)
1083  */
1084 BOOL16 WINAPI DdeEnableCallback16( DWORD idInst, HCONV hConv, UINT16 wCmd )
1085 {
1086      return DdeEnableCallback32(idInst, hConv, wCmd);
1087 }
1088
1089 /*****************************************************************
1090  *            DdeEnableCallback32 (USER32.99)
1091  */
1092 BOOL32 WINAPI DdeEnableCallback32( DWORD idInst, HCONV hConv, UINT32 wCmd )
1093 {
1094      FIXME( ddeml, "(%ld, 0x%lx, %d) stub\n", idInst, hConv, wCmd);
1095
1096      return 0;
1097 }
1098
1099 /*****************************************************************
1100  *            DdeNameService16  (DDEML.27)
1101  */
1102 HDDEDATA WINAPI DdeNameService16( DWORD idInst, HSZ hsz1, HSZ hsz2,
1103                                   UINT16 afCmd )
1104 {
1105     return DdeNameService32( idInst, hsz1, hsz2, afCmd );
1106 }
1107
1108
1109 /******************************************************************************
1110  * DdeNameService32 [USER32.109]  {Un}registers service name of DDE server
1111  *
1112  * PARAMS
1113  *    idInst [I] Instance identifier
1114  *    hsz1   [I] Handle to service name string
1115  *    hsz2   [I] Reserved
1116  *    afCmd  [I] Service name flags
1117  *
1118  * RETURNS
1119  *    Success: Non-zero
1120  *    Failure: 0
1121  */
1122 HDDEDATA WINAPI DdeNameService32( DWORD idInst, HSZ hsz1, HSZ hsz2,
1123                 UINT32 afCmd )
1124 {
1125     FIXME(ddeml, "(%ld,%ld,%ld,%d): stub\n",idInst,hsz1,hsz2,afCmd);
1126     return 1;
1127 }
1128
1129
1130 /*****************************************************************
1131  *            DdeGetLastError16  (DDEML.20)
1132  */
1133 UINT16 WINAPI DdeGetLastError16( DWORD idInst )
1134 {
1135     return (UINT16)DdeGetLastError32( idInst );
1136 }
1137
1138
1139 /******************************************************************************
1140  * DdeGetLastError32 [USER32.103]  Gets most recent error code
1141  *
1142  * PARAMS
1143  *    idInst [I] Instance identifier
1144  *
1145  * RETURNS
1146  *    Last error code
1147  */
1148 UINT32 WINAPI DdeGetLastError32( DWORD idInst )
1149 {
1150     FIXME(ddeml, "(%ld): stub\n",idInst);
1151     return 0;
1152 }
1153
1154
1155 /*****************************************************************
1156  *            DdeCmpStringHandles16 (DDEML.36)
1157  */
1158 int WINAPI DdeCmpStringHandles16( HSZ hsz1, HSZ hsz2 )
1159 {
1160      return DdeCmpStringHandles32(hsz1, hsz2);
1161 }
1162
1163 /*****************************************************************
1164  *            DdeCmpStringHandles32 (USER32.91)
1165  *
1166  * Compares the value of two string handles.  This comparison is
1167  * not case sensitive.
1168  *
1169  * Returns:
1170  * -1 The value of hsz1 is zero or less than hsz2
1171  * 0  The values of hsz 1 and 2 are the same or both zero.
1172  * 1  The value of hsz2 is zero of less than hsz1
1173  */
1174 int WINAPI DdeCmpStringHandles32( HSZ hsz1, HSZ hsz2 )
1175 {
1176     CHAR psz1[MAX_BUFFER_LEN];
1177     CHAR psz2[MAX_BUFFER_LEN];
1178     int ret = 0;
1179     int ret1, ret2;
1180
1181     TRACE( ddeml, "handle 1, handle 2\n" );
1182
1183     ret1 = GlobalGetAtomName32A( hsz1, psz1, MAX_BUFFER_LEN );
1184     ret2 = GlobalGetAtomName32A( hsz2, psz2, MAX_BUFFER_LEN );
1185     /* Make sure we found both strings.
1186      */
1187     if( ret1 == 0 && ret2 == 0 )
1188     {
1189         /* If both are not found, return both  "zero strings".
1190          */
1191         ret = 0;
1192     }
1193     else if( ret1 == 0 )
1194     {
1195         /* If hsz1 is a not found, return hsz1 is "zero string".
1196          */
1197         ret = -1;
1198     }
1199     else if( ret2 == 0 )
1200     {
1201         /* If hsz2 is a not found, return hsz2 is "zero string".
1202          */
1203         ret = 1;
1204     }
1205     else
1206     {
1207         /* Compare the two strings we got ( case insensitive ).
1208          */
1209         ret = strcasecmp( psz1, psz2 );
1210         /* Since strcmp returns any number smaller than
1211          * 0 when the first string is found to be less than
1212          * the second one we must make sure we are returning
1213          * the proper values.
1214          */
1215         if( ret < 0 )
1216         {
1217             ret = -1;
1218         }
1219         else if( ret > 0 )
1220         {
1221             ret = 1;
1222         }
1223     }
1224
1225     return ret;
1226 }
1227
1228 /*****************************************************************
1229  *            PackDDElParam (USER32.414)
1230  *
1231  * RETURNS
1232  *   success: nonzero
1233  *   failure: zero
1234  */
1235 UINT32 WINAPI PackDDElParam(UINT32 msg, UINT32 uiLo, UINT32 uiHi)
1236 {
1237     FIXME(ddeml, "stub.\n");
1238     return 0;
1239 }
1240
1241
1242 /*****************************************************************
1243  *            UnpackDDElParam (USER32.562)
1244  *
1245  * RETURNS
1246  *   success: nonzero
1247  *   failure: zero
1248  */
1249 UINT32 WINAPI UnpackDDElParam(UINT32 msg, UINT32 lParam,
1250                               UINT32 *uiLo, UINT32 *uiHi)
1251 {
1252     FIXME(ddeml, "stub.\n");
1253     return 0;
1254 }
1255
1256
1257 /*****************************************************************
1258  *            FreeDDElParam (USER32.204)
1259  *
1260  * RETURNS
1261  *   success: nonzero
1262  *   failure: zero
1263  */
1264 UINT32 WINAPI FreeDDElParam(UINT32 msg, UINT32 lParam)
1265 {
1266     FIXME(ddeml, "stub.\n");
1267     return 0;
1268 }
1269
1270 /*****************************************************************
1271  *            ReuseDDElParam (USER32.446)
1272  *
1273  */
1274 UINT32 WINAPI ReuseDDElParam(UINT32 lParam, UINT32 msgIn, UINT32 msgOut,
1275                              UINT32 uiLi, UINT32 uiHi)
1276 {
1277     FIXME(ddeml, "stub.\n");
1278     return 0;
1279 }