dlls/ole32/marshal.c

   1 /*
   2  *      Marshalling library
   3  *
   4  *  Copyright 2002  Marcus Meissner
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdlib.h>
  24 #include <stdarg.h>
  25 #include <stdio.h>
  26 #include <string.h>
  27 #include <assert.h>
  28
  29 #include "windef.h"
  30 #include "winbase.h"
  31 #include "winuser.h"
  32 #include "objbase.h"
  33 #include "ole2.h"
  34 #include "ole2ver.h"
  35 #include "rpc.h"
  36 #include "winerror.h"
  37 #include "winreg.h"
  38 #include "wownt32.h"
  39 #include "wtypes.h"
  40 #include "wine/unicode.h"
  41 #include "wine/winbase16.h"
  42 #include "compobj_private.h"
  43 #include "ifs.h"
  44
  45 #include "wine/debug.h"
  46
  47 WINE_DEFAULT_DEBUG_CHANNEL(ole);
  48
  49 extern const CLSID CLSID_DfMarshal;
  50
  51 /* Marshalling just passes a unique identifier to the remote client,
  52  * that makes it possible to find the passed interface again.
  53  *
  54  * So basically we need a set of values that make it unique.
  55  *
  56  *      Process Identifier, Object IUnknown ptr, IID
  57  *
  58  * Note that the IUnknown_QI(ob,xiid,&ppv) always returns the SAME ppv value!
  59  */
  60
  61 inline static HRESULT
  62 get_facbuf_for_iid(REFIID riid,IPSFactoryBuffer **facbuf) {
  63     HRESULT       hres;
  64     CLSID         pxclsid;
  65
  66     if ((hres = CoGetPSClsid(riid,&pxclsid)))
  67         return hres;
  68     return CoGetClassObject(&pxclsid,CLSCTX_INPROC_SERVER,NULL,&IID_IPSFactoryBuffer,(LPVOID*)facbuf);
  69 }
  70
  71 typedef struct _wine_marshal_data {
  72     DWORD       dwDestContext;
  73     DWORD       mshlflags;
  74 } wine_marshal_data;
  75
  76 typedef struct _mid2unknown {
  77     wine_marshal_id     mid;
  78     LPUNKNOWN           pUnk;
  79 } mid2unknown;
  80
  81 typedef struct _mid2stub {
  82     wine_marshal_id     mid;
  83     IRpcStubBuffer      *stub;
  84     LPUNKNOWN           pUnkServer;
  85     BOOL               valid;
  86 } mid2stub;
  87
  88 static mid2stub *stubs = NULL;
  89 static int nrofstubs = 0;
  90
  91 static mid2unknown *proxies = NULL;
  92 static int nrofproxies = 0;
  93
  94 void MARSHAL_Invalidate_Stub_From_MID(wine_marshal_id *mid) {
  95     int i;
  96
  97     for (i=0;i<nrofstubs;i++) {
  98         if (!stubs[i].valid) continue;
  99
 100         if (MARSHAL_Compare_Mids(mid,&(stubs[i].mid))) {
 101             stubs[i].valid = FALSE;
 102             return;
 103         }
 104     }
 105
 106     return;
 107 }
 108
 109 HRESULT
 110 MARSHAL_Find_Stub_Buffer(wine_marshal_id *mid,IRpcStubBuffer **stub) {
 111     int i;
 112
 113     for (i=0;i<nrofstubs;i++) {
 114        if (!stubs[i].valid) continue;
 115
 116         if (MARSHAL_Compare_Mids(mid,&(stubs[i].mid))) {
 117             *stub = stubs[i].stub;
 118             IUnknown_AddRef((*stub));
 119             return S_OK;
 120         }
 121     }
 122     return E_FAIL;
 123 }
 124
 125 static HRESULT
 126 MARSHAL_Find_Stub(wine_marshal_id *mid,LPUNKNOWN *pUnk) {
 127     int i;
 128
 129     for (i=0;i<nrofstubs;i++) {
 130        if (!stubs[i].valid) continue;
 131
 132         if (MARSHAL_Compare_Mids(mid,&(stubs[i].mid))) {
 133             *pUnk = stubs[i].pUnkServer;
 134             IUnknown_AddRef((*pUnk));
 135             return S_OK;
 136         }
 137     }
 138     return E_FAIL;
 139 }
 140
 141 static HRESULT
 142 MARSHAL_Register_Stub(wine_marshal_id *mid,LPUNKNOWN pUnk,IRpcStubBuffer *stub) {
 143     LPUNKNOWN   xPunk;
 144     if (!MARSHAL_Find_Stub(mid,&xPunk)) {
 145         FIXME("Already have entry for (%lx/%s)!\n",mid->objectid,debugstr_guid(&(mid->iid)));
 146         return S_OK;
 147     }
 148     if (nrofstubs)
 149         stubs=HeapReAlloc(GetProcessHeap(),0,stubs,sizeof(stubs[0])*(nrofstubs+1));
 150     else
 151         stubs=HeapAlloc(GetProcessHeap(),0,sizeof(stubs[0]));
 152     if (!stubs) return E_OUTOFMEMORY;
 153     stubs[nrofstubs].stub = stub;
 154     stubs[nrofstubs].pUnkServer = pUnk;
 155     memcpy(&(stubs[nrofstubs].mid),mid,sizeof(*mid));
 156     stubs[nrofstubs].valid = TRUE; /* set to false when released by ReleaseMarshalData */
 157     nrofstubs++;
 158     return S_OK;
 159 }
 160
 161 HRESULT
 162 MARSHAL_Disconnect_Proxies() {
 163     int i;
 164
 165     TRACE("Disconnecting %d proxies\n", nrofproxies);
 166
 167     for (i = 0; i < nrofproxies; i++)
 168         IRpcProxyBuffer_Disconnect((IRpcProxyBuffer*)proxies[i].pUnk);
 169
 170     return S_OK;
 171 }
 172
 173 static HRESULT
 174 MARSHAL_Register_Proxy(wine_marshal_id *mid,LPUNKNOWN punk) {
 175     int i;
 176
 177     for (i=0;i<nrofproxies;i++) {
 178         if (MARSHAL_Compare_Mids(mid,&(proxies[i].mid))) {
 179             ERR("Already have mid?\n");
 180             return E_FAIL;
 181         }
 182     }
 183     if (nrofproxies)
 184         proxies = HeapReAlloc(GetProcessHeap(),0,proxies,sizeof(proxies[0])*(nrofproxies+1));
 185     else
 186         proxies = HeapAlloc(GetProcessHeap(),0,sizeof(proxies[0]));
 187     memcpy(&(proxies[nrofproxies].mid),mid,sizeof(*mid));
 188     proxies[nrofproxies].pUnk = punk;
 189     nrofproxies++;
 190     IUnknown_AddRef(punk);
 191     return S_OK;
 192 }
 193
 194 /********************** StdMarshal implementation ****************************/
 195 typedef struct _StdMarshalImpl {
 196   IMarshalVtbl  *lpvtbl;
 197   DWORD                 ref;
 198
 199   IID                   iid;
 200   DWORD                 dwDestContext;
 201   LPVOID                pvDestContext;
 202   DWORD                 mshlflags;
 203 } StdMarshalImpl;
 204
 205 static HRESULT WINAPI
 206 StdMarshalImpl_QueryInterface(LPMARSHAL iface,REFIID riid,LPVOID *ppv) {
 207   *ppv = NULL;
 208   if (IsEqualIID(&IID_IUnknown,riid) || IsEqualIID(&IID_IMarshal,riid)) {
 209     *ppv = iface;
 210     IUnknown_AddRef(iface);
 211     return S_OK;
 212   }
 213   FIXME("No interface for %s.\n",debugstr_guid(riid));
 214   return E_NOINTERFACE;
 215 }
 216
 217 static ULONG WINAPI
 218 StdMarshalImpl_AddRef(LPMARSHAL iface) {
 219   StdMarshalImpl *This = (StdMarshalImpl *)iface;
 220   This->ref++;
 221   return This->ref;
 222 }
 223
 224 static ULONG WINAPI
 225 StdMarshalImpl_Release(LPMARSHAL iface) {
 226   StdMarshalImpl *This = (StdMarshalImpl *)iface;
 227   This->ref--;
 228
 229   if (This->ref)
 230     return This->ref;
 231   HeapFree(GetProcessHeap(),0,This);
 232   return 0;
 233 }
 234
 235 static HRESULT WINAPI
 236 StdMarshalImpl_GetUnmarshalClass(
 237   LPMARSHAL iface, REFIID riid, void* pv, DWORD dwDestContext,
 238   void* pvDestContext, DWORD mshlflags, CLSID* pCid
 239 ) {
 240   memcpy(pCid,&CLSID_DfMarshal,sizeof(CLSID_DfMarshal));
 241   return S_OK;
 242 }
 243
 244 static HRESULT WINAPI
 245 StdMarshalImpl_GetMarshalSizeMax(
 246   LPMARSHAL iface, REFIID riid, void* pv, DWORD dwDestContext,
 247   void* pvDestContext, DWORD mshlflags, DWORD* pSize
 248 ) {
 249   *pSize = sizeof(wine_marshal_id)+sizeof(wine_marshal_data);
 250   return S_OK;
 251 }
 252
 253 static HRESULT WINAPI
 254 StdMarshalImpl_MarshalInterface(
 255   LPMARSHAL iface, IStream *pStm,REFIID riid, void* pv, DWORD dwDestContext,
 256   void* pvDestContext, DWORD mshlflags
 257 ) {
 258   wine_marshal_id       mid;
 259   wine_marshal_data     md;
 260   IUnknown              *pUnk;
 261   ULONG                 res;
 262   HRESULT               hres;
 263   IRpcStubBuffer        *stub;
 264   IPSFactoryBuffer      *psfacbuf;
 265
 266   TRACE("(...,%s,...)\n",debugstr_guid(riid));
 267
 268   IUnknown_QueryInterface((LPUNKNOWN)pv,&IID_IUnknown,(LPVOID*)&pUnk);
 269   mid.processid = GetCurrentProcessId();
 270   mid.objectid = (DWORD)pUnk; /* FIXME */
 271   IUnknown_Release(pUnk);
 272   memcpy(&mid.iid,riid,sizeof(mid.iid));
 273   md.dwDestContext      = dwDestContext;
 274   md.mshlflags          = mshlflags;
 275   hres = IStream_Write(pStm,&mid,sizeof(mid),&res);
 276   if (hres) return hres;
 277   hres = IStream_Write(pStm,&md,sizeof(md),&res);
 278   if (hres) return hres;
 279
 280   if (SUCCEEDED(MARSHAL_Find_Stub_Buffer(&mid,&stub))) {
 281       /* Find_Stub_Buffer gives us a ref but we want to keep it, as if we'd created a new one */
 282       TRACE("Found RpcStubBuffer %p\n", stub);
 283       return S_OK;
 284   }
 285   hres = get_facbuf_for_iid(riid,&psfacbuf);
 286   if (hres) return hres;
 287
 288   hres = IPSFactoryBuffer_CreateStub(psfacbuf,riid,pv,&stub);
 289   IPSFactoryBuffer_Release(psfacbuf);
 290   if (hres) {
 291     FIXME("Failed to create a stub for %s\n",debugstr_guid(riid));
 292     return hres;
 293   }
 294   IUnknown_QueryInterface((LPUNKNOWN)pv,riid,(LPVOID*)&pUnk);
 295   MARSHAL_Register_Stub(&mid,pUnk,stub);
 296   IUnknown_Release(pUnk);
 297   return S_OK;
 298 }
 299
 300 static HRESULT WINAPI
 301 StdMarshalImpl_UnmarshalInterface(
 302   LPMARSHAL iface, IStream *pStm, REFIID riid, void **ppv
 303 ) {
 304   wine_marshal_id       mid;
 305   wine_marshal_data     md;
 306   ULONG                 res;
 307   HRESULT               hres;
 308   IPSFactoryBuffer      *psfacbuf;
 309   IRpcProxyBuffer       *rpcproxy;
 310   IRpcChannelBuffer     *chanbuf;
 311
 312   TRACE("(...,%s,....)\n",debugstr_guid(riid));
 313   hres = IStream_Read(pStm,&mid,sizeof(mid),&res);
 314   if (hres) return hres;
 315   hres = IStream_Read(pStm,&md,sizeof(md),&res);
 316   if (hres) return hres;
 317   if (SUCCEEDED(MARSHAL_Find_Stub(&mid,(LPUNKNOWN*)ppv))) {
 318       FIXME("Calling back to ourselves for %s!\n",debugstr_guid(riid));
 319       return S_OK;
 320   }
 321   if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_NULL)) {
 322     /* should return proxy manager IUnknown object */
 323     FIXME("Special treatment required for IID of %s\n", debugstr_guid(riid));
 324   }
 325   hres = get_facbuf_for_iid(riid,&psfacbuf);
 326   if (hres) return hres;
 327   hres = IPSFactoryBuffer_CreateProxy(psfacbuf,NULL,riid,&rpcproxy,ppv);
 328   if (hres) {
 329     FIXME("Failed to create a proxy for %s\n",debugstr_guid(riid));
 330     return hres;
 331   }
 332
 333   MARSHAL_Register_Proxy(&mid, (LPUNKNOWN) rpcproxy);
 334
 335   hres = PIPE_GetNewPipeBuf(&mid,&chanbuf);
 336   IPSFactoryBuffer_Release(psfacbuf);
 337   if (hres) {
 338     ERR("Failed to get an rpc channel buffer for %s\n",debugstr_guid(riid));
 339   } else {
 340     /* Connect the channel buffer to the proxy and release the no longer
 341      * needed proxy.
 342      * NOTE: The proxy should have taken an extra reference because it also
 343      * aggregates the object, so we can safely release our reference to it. */
 344     IRpcProxyBuffer_Connect(rpcproxy,chanbuf);
 345     IRpcProxyBuffer_Release(rpcproxy);
 346     /* IRpcProxyBuffer takes a reference on the channel buffer and
 347      * we no longer need it, so release it */
 348     IRpcChannelBuffer_Release(chanbuf);
 349   }
 350   return hres;
 351 }
 352
 353 static HRESULT WINAPI
 354 StdMarshalImpl_ReleaseMarshalData(LPMARSHAL iface, IStream *pStm) {
 355   wine_marshal_id       mid;
 356   ULONG                 res;
 357   HRESULT               hres;
 358   IRpcStubBuffer       *stub = NULL;
 359   int                   i;
 360
 361   hres = IStream_Read(pStm,&mid,sizeof(mid),&res);
 362   if (hres) return hres;
 363
 364   for (i=0; i < nrofstubs; i++)
 365   {
 366        if (!stubs[i].valid) continue;
 367
 368        if (MARSHAL_Compare_Mids(&mid, &(stubs[i].mid)))
 369        {
 370            stub = stubs[i].stub;
 371            break;
 372        }
 373   }
 374
 375   if (!stub)
 376   {
 377       FIXME("Could not map MID to stub??\n");
 378       return E_FAIL;
 379   }
 380
 381   res = IRpcStubBuffer_Release(stub);
 382   stubs[i].valid = FALSE;
 383   TRACE("stub refcount of %p is %ld\n", stub, res);
 384
 385   return S_OK;
 386 }
 387
 388 static HRESULT WINAPI
 389 StdMarshalImpl_DisconnectObject(LPMARSHAL iface, DWORD dwReserved) {
 390   FIXME("(), stub!\n");
 391   return S_OK;
 392 }
 393
 394 IMarshalVtbl stdmvtbl = {
 395     StdMarshalImpl_QueryInterface,
 396     StdMarshalImpl_AddRef,
 397     StdMarshalImpl_Release,
 398     StdMarshalImpl_GetUnmarshalClass,
 399     StdMarshalImpl_GetMarshalSizeMax,
 400     StdMarshalImpl_MarshalInterface,
 401     StdMarshalImpl_UnmarshalInterface,
 402     StdMarshalImpl_ReleaseMarshalData,
 403     StdMarshalImpl_DisconnectObject
 404 };
 405
 406 /***********************************************************************
 407  *              CoGetStandardMarshal    [OLE32.@]
 408  *
 409  * When the COM library in the client process receives a marshalled
 410  * interface pointer, it looks for a CLSID to be used in creating a proxy
 411  * for the purposes of unmarshalling the packet. If the packet does not
 412  * contain a CLSID for the proxy, COM calls CoGetStandardMarshal, passing a
 413  * NULL pUnk value.
 414  * This function creates a standard proxy in the client process and returns
 415  * a pointer to that proxy's implementation of IMarshal.
 416  * COM uses this pointer to call CoUnmarshalInterface to retrieve the pointer
 417  * to the requested interface.
 418  */
 419 HRESULT WINAPI
 420 CoGetStandardMarshal(
 421   REFIID riid,IUnknown *pUnk,DWORD dwDestContext,LPVOID pvDestContext,
 422   DWORD mshlflags, LPMARSHAL *pMarshal
 423 ) {
 424   StdMarshalImpl *dm;
 425
 426   if (pUnk == NULL) {
 427     FIXME("(%s,NULL,%lx,%p,%lx,%p), unimplemented yet.\n",
 428       debugstr_guid(riid),dwDestContext,pvDestContext,mshlflags,pMarshal
 429     );
 430     return E_FAIL;
 431   }
 432   TRACE("(%s,%p,%lx,%p,%lx,%p)\n",
 433     debugstr_guid(riid),pUnk,dwDestContext,pvDestContext,mshlflags,pMarshal
 434   );
 435   *pMarshal = HeapAlloc(GetProcessHeap(),0,sizeof(StdMarshalImpl));
 436   dm = (StdMarshalImpl*) *pMarshal;
 437   if (!dm) return E_FAIL;
 438   dm->lpvtbl            = &stdmvtbl;
 439   dm->ref               = 1;
 440
 441   memcpy(&dm->iid,riid,sizeof(dm->iid));
 442   dm->dwDestContext     = dwDestContext;
 443   dm->pvDestContext     = pvDestContext;
 444   dm->mshlflags         = mshlflags;
 445   return S_OK;
 446 }
 447
 448 /* Helper function for getting Marshaler */
 449 static HRESULT WINAPI
 450 _GetMarshaller(REFIID riid, IUnknown *pUnk,DWORD dwDestContext,
 451   void *pvDestContext, DWORD mshlFlags, LPMARSHAL *pMarshal
 452 ) {
 453   HRESULT hres;
 454
 455   if (!pUnk)
 456       return E_POINTER;
 457   hres = IUnknown_QueryInterface(pUnk,&IID_IMarshal,(LPVOID*)pMarshal);
 458   if (hres)
 459     hres = CoGetStandardMarshal(riid,pUnk,dwDestContext,pvDestContext,mshlFlags,pMarshal);
 460   return hres;
 461 }
 462
 463 /***********************************************************************
 464  *              CoGetMarshalSizeMax     [OLE32.@]
 465  */
 466 HRESULT WINAPI
 467 CoGetMarshalSizeMax(ULONG *pulSize, REFIID riid, IUnknown *pUnk,
 468   DWORD dwDestContext, void *pvDestContext, DWORD mshlFlags
 469 ) {
 470   HRESULT       hres;
 471   LPMARSHAL     pMarshal;
 472
 473   hres = _GetMarshaller(riid,pUnk,dwDestContext,pvDestContext,mshlFlags,&pMarshal);
 474   if (hres)
 475     return hres;
 476   hres = IMarshal_GetMarshalSizeMax(pMarshal,riid,pUnk,dwDestContext,pvDestContext,mshlFlags,pulSize);
 477   *pulSize += sizeof(wine_marshal_id)+sizeof(wine_marshal_data)+sizeof(CLSID);
 478   IMarshal_Release(pMarshal);
 479   return hres;
 480 }
 481
 482
 483 /***********************************************************************
 484  *              CoMarshalInterface      [OLE32.@]
 485  */
 486 HRESULT WINAPI
 487 CoMarshalInterface( IStream *pStm, REFIID riid, IUnknown *pUnk,
 488   DWORD dwDestContext, void *pvDestContext, DWORD mshlflags
 489 ) {
 490   HRESULT               hres;
 491   LPMARSHAL             pMarshal;
 492   CLSID                 xclsid;
 493   ULONG                 writeres;
 494   wine_marshal_id       mid;
 495   wine_marshal_data     md;
 496   ULONG                 res;
 497   IUnknown              *pUnknown;
 498
 499   TRACE("(%p, %s, %p, %lx, %p, %lx)\n",
 500     pStm,debugstr_guid(riid),pUnk,dwDestContext,pvDestContext,mshlflags
 501   );
 502
 503   if (pUnk == NULL)
 504     return E_INVALIDARG;
 505
 506   STUBMGR_Start(); /* Just to be sure we have one running. */
 507   mid.processid = GetCurrentProcessId();
 508   IUnknown_QueryInterface(pUnk,&IID_IUnknown,(LPVOID*)&pUnknown);
 509   mid.objectid = (DWORD)pUnknown;
 510   IUnknown_Release(pUnknown);
 511   memcpy(&mid.iid,riid,sizeof(mid.iid));
 512   md.dwDestContext      = dwDestContext;
 513   md.mshlflags          = mshlflags;
 514   hres = IStream_Write(pStm,&mid,sizeof(mid),&res);
 515   if (hres) return hres;
 516   hres = IStream_Write(pStm,&md,sizeof(md),&res);
 517   if (hres) return hres;
 518   hres = _GetMarshaller(riid,pUnk,dwDestContext,pvDestContext,mshlflags,&pMarshal);
 519   if (hres) {
 520     FIXME("Failed to get marshaller, %lx?\n",hres);
 521     return hres;
 522   }
 523   hres = IMarshal_GetUnmarshalClass(pMarshal,riid,pUnk,dwDestContext,pvDestContext,mshlflags,&xclsid);
 524   if (hres) {
 525     FIXME("IMarshal:GetUnmarshalClass failed, %lx\n",hres);
 526     goto release_marshal;
 527   }
 528   hres = IStream_Write(pStm,&xclsid,sizeof(xclsid),&writeres);
 529   if (hres) {
 530     FIXME("Stream write failed, %lx\n",hres);
 531     goto release_marshal;
 532   }
 533
 534   TRACE("Calling IMarshal::MarshalInterace\n");
 535   hres = IMarshal_MarshalInterface(pMarshal,pStm,riid,pUnk,dwDestContext,pvDestContext,mshlflags);
 536
 537   if (hres) {
 538     if (IsEqualGUID(riid,&IID_IOleObject)) {
 539       ERR("WINE currently cannot marshal IOleObject interfaces. This means you cannot embed/link OLE objects between applications.\n");
 540     } else {
 541       FIXME("Failed to marshal the interface %s, %lx?\n",debugstr_guid(riid),hres);
 542     }
 543   }
 544 release_marshal:
 545   IMarshal_Release(pMarshal);
 546   return hres;
 547 }
 548
 549
 550 /***********************************************************************
 551  *              CoUnmarshalInterface    [OLE32.@]
 552  */
 553 HRESULT WINAPI
 554 CoUnmarshalInterface(IStream *pStm, REFIID riid, LPVOID *ppv) {
 555   HRESULT               hres;
 556   wine_marshal_id       mid;
 557   wine_marshal_data     md;
 558   ULONG                 res;
 559   LPMARSHAL             pMarshal;
 560   LPUNKNOWN             pUnk;
 561   CLSID                 xclsid;
 562
 563   TRACE("(%p,%s,%p)\n",pStm,debugstr_guid(riid),ppv);
 564
 565   hres = IStream_Read(pStm,&mid,sizeof(mid),&res);
 566   if (hres) {
 567       FIXME("Stream read 1 failed, %lx, (%ld of %d)\n",hres,res,sizeof(mid));
 568       return hres;
 569   }
 570   hres = IStream_Read(pStm,&md,sizeof(md),&res);
 571   if (hres) {
 572       FIXME("Stream read 2 failed, %lx, (%ld of %d)\n",hres,res,sizeof(md));
 573       return hres;
 574   }
 575   hres = IStream_Read(pStm,&xclsid,sizeof(xclsid),&res);
 576   if (hres) {
 577       FIXME("Stream read 3 failed, %lx, (%ld of %d)\n",hres,res,sizeof(xclsid));
 578       return hres;
 579   }
 580   hres=CoCreateInstance(&xclsid,NULL,CLSCTX_INPROC_SERVER | CLSCTX_INPROC_HANDLER | CLSCTX_LOCAL_SERVER,&IID_IMarshal,(void**)&pUnk);
 581   if (hres) {
 582       FIXME("Failed to create instance of unmarshaller %s.\n",debugstr_guid(&xclsid));
 583       return hres;
 584   }
 585   hres = _GetMarshaller(riid,pUnk,md.dwDestContext,NULL,md.mshlflags,&pMarshal);
 586   if (hres) {
 587       FIXME("Failed to get unmarshaller, %lx?\n",hres);
 588       return hres;
 589   }
 590   hres = IMarshal_UnmarshalInterface(pMarshal,pStm,riid,ppv);
 591   if (hres) {
 592     FIXME("Failed to Unmarshal the interface, %lx?\n",hres);
 593     goto release_marshal;
 594   }
 595 release_marshal:
 596   IMarshal_Release(pMarshal);
 597   return hres;
 598 }
 599
 600 /***********************************************************************
 601  *              CoReleaseMarshalData    [OLE32.@]
 602  */
 603 HRESULT WINAPI
 604 CoReleaseMarshalData(IStream *pStm) {
 605   HRESULT               hres;
 606   wine_marshal_id       mid;
 607   wine_marshal_data     md;
 608   ULONG                 res;
 609   LPMARSHAL             pMarshal;
 610   LPUNKNOWN             pUnk;
 611   CLSID                 xclsid;
 612
 613   TRACE("(%p)\n",pStm);
 614
 615   hres = IStream_Read(pStm,&mid,sizeof(mid),&res);
 616   if (hres) {
 617       FIXME("Stream read 1 failed, %lx, (%ld of %d)\n",hres,res,sizeof(mid));
 618       return hres;
 619   }
 620   hres = IStream_Read(pStm,&md,sizeof(md),&res);
 621   if (hres) {
 622       FIXME("Stream read 2 failed, %lx, (%ld of %d)\n",hres,res,sizeof(md));
 623       return hres;
 624   }
 625   hres = IStream_Read(pStm,&xclsid,sizeof(xclsid),&res);
 626   if (hres) {
 627       FIXME("Stream read 3 failed, %lx, (%ld of %d)\n",hres,res,sizeof(xclsid));
 628       return hres;
 629   }
 630   hres=CoCreateInstance(&xclsid,NULL,CLSCTX_INPROC_SERVER | CLSCTX_INPROC_HANDLER | CLSCTX_LOCAL_SERVER,&IID_IMarshal,(void**)(char*)&pUnk);
 631   if (hres) {
 632       FIXME("Failed to create instance of unmarshaller %s.\n",debugstr_guid(&xclsid));
 633       return hres;
 634   }
 635   hres = IUnknown_QueryInterface(pUnk,&IID_IMarshal,(LPVOID*)(char*)&pMarshal);
 636   if (hres) {
 637       FIXME("Failed to get IMarshal iface, %lx?\n",hres);
 638       return hres;
 639   }
 640   hres = IMarshal_ReleaseMarshalData(pMarshal,pStm);
 641   if (hres) {
 642     FIXME("Failed to releasemarshaldata the interface, %lx?\n",hres);
 643   }
 644   IMarshal_Release(pMarshal);
 645   IUnknown_Release(pUnk);
 646   return hres;
 647 }
 648
 649
 650 /***********************************************************************
 651  *              CoMarshalInterThreadInterfaceInStream   [OLE32.@]
 652  *
 653  * Marshal an interface across threads in the same process.
 654  *
 655  * PARAMS
 656  *  riid  [I] Identifier of the interface to be marshalled.
 657  *  pUnk  [I] Pointer to IUnknown-derived interface that will be marshalled.
 658  *  ppStm [O] Pointer to IStream object that is created and then used to store the marshalled inteface.
 659  *
 660  * RETURNS
 661  *  Success: S_OK
 662  *  Failure: E_OUTOFMEMORY and other COM error codes
 663  *
 664  * SEE
 665  *   CoMarshalInterface(), CoUnmarshalInterface() and CoGetInterfaceAndReleaseStream()
 666  */
 667 HRESULT WINAPI
 668 CoMarshalInterThreadInterfaceInStream(
 669   REFIID riid, LPUNKNOWN pUnk, LPSTREAM * ppStm)
 670 {
 671     ULARGE_INTEGER      xpos;
 672     LARGE_INTEGER               seekto;
 673     HRESULT             hres;
 674
 675     TRACE("(%s, %p, %p)\n",debugstr_guid(riid), pUnk, ppStm);
 676
 677     hres = CreateStreamOnHGlobal(0, TRUE, ppStm);
 678     if (FAILED(hres)) return hres;
 679     hres = CoMarshalInterface(*ppStm, riid, pUnk, MSHCTX_INPROC, NULL, MSHLFLAGS_NORMAL);
 680
 681     /* FIXME: is this needed? */
 682     memset(&seekto,0,sizeof(seekto));
 683     IStream_Seek(*ppStm,seekto,SEEK_SET,&xpos);
 684
 685     return hres;
 686 }
 687
 688 /***********************************************************************
 689  *              CoGetInterfaceAndReleaseStream  [OLE32.@]
 690  *
 691  * Unmarshalls an inteface from a stream and then releases the stream.
 692  *
 693  * PARAMS
 694  *  pStm [I] Stream that contains the marshalled inteface.
 695  *  riid [I] Interface identifier of the object to unmarshall.
 696  *  ppv  [O] Address of pointer where the requested interface object will be stored.
 697  *
 698  * RETURNS
 699  *  Success: S_OK
 700  *  Failure: A COM error code
 701  *
 702  * SEE
 703  *  CoMarshalInterThreadInterfaceInStream() and CoUnmarshalInteface()
 704  */
 705 HRESULT WINAPI
 706 CoGetInterfaceAndReleaseStream(LPSTREAM pStm,REFIID riid, LPVOID *ppv)
 707 {
 708     HRESULT hres;
 709
 710     TRACE("(%p, %s, %p)\n", pStm, debugstr_guid(riid), ppv);
 711
 712     hres = CoUnmarshalInterface(pStm, riid, ppv);
 713     IStream_Release(pStm);
 714     return hres;
 715 }
 716
 717 static HRESULT WINAPI
 718 SMCF_QueryInterface(LPCLASSFACTORY iface,REFIID riid, LPVOID *ppv) {
 719   *ppv = NULL;
 720   if (IsEqualIID(riid,&IID_IUnknown) || IsEqualIID(riid,&IID_IClassFactory)) {
 721     *ppv = (LPVOID)iface;
 722     return S_OK;
 723   }
 724   return E_NOINTERFACE;
 725 }
 726 static ULONG WINAPI SMCF_AddRef(LPCLASSFACTORY iface) { return 2; }
 727 static ULONG WINAPI SMCF_Release(LPCLASSFACTORY iface) { return 1; }
 728
 729 static HRESULT WINAPI
 730 SMCF_CreateInstance(
 731   LPCLASSFACTORY iface, LPUNKNOWN pUnk, REFIID riid, LPVOID *ppv
 732 ) {
 733   if (IsEqualIID(riid,&IID_IMarshal)) {
 734       StdMarshalImpl    *dm;
 735       dm=(StdMarshalImpl*)HeapAlloc(GetProcessHeap(),0,sizeof(StdMarshalImpl));
 736       if (!dm)
 737           return E_FAIL;
 738       dm->lpvtbl        = &stdmvtbl;
 739       dm->ref           = 1;
 740       *ppv = (LPVOID)dm;
 741       return S_OK;
 742   }
 743   FIXME("(%s), not supported.\n",debugstr_guid(riid));
 744   return E_NOINTERFACE;
 745 }
 746
 747 static HRESULT WINAPI
 748 SMCF_LockServer(LPCLASSFACTORY iface, BOOL fLock) {
 749     FIXME("(%d), stub!\n",fLock);
 750     return S_OK;
 751 }
 752
 753 static IClassFactoryVtbl dfmarshalcfvtbl = {
 754     SMCF_QueryInterface,
 755     SMCF_AddRef,
 756     SMCF_Release,
 757     SMCF_CreateInstance,
 758     SMCF_LockServer
 759 };
 760 static IClassFactoryVtbl *pdfmarshalcfvtbl = &dfmarshalcfvtbl;
 761
 762 HRESULT
 763 MARSHAL_GetStandardMarshalCF(LPVOID *ppv) {
 764   *ppv = &pdfmarshalcfvtbl;
 765   return S_OK;
 766 }