dlls/ole32/oleproxy.c

   1 /*
   2  *      OLE32 proxy/stub handler
   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 /* Documentation on MSDN:
  22  *
  23  * (COM Proxy)
  24  * http://msdn.microsoft.com/library/en-us/com/comext_1q0p.asp
  25  *
  26  * (COM Stub)
  27  * http://msdn.microsoft.com/library/en-us/com/comext_1lia.asp
  28  *
  29  * (Marshal)
  30  * http://msdn.microsoft.com/library/en-us/com/comext_1gfn.asp
  31  *
  32  */
  33
  34 #include "config.h"
  35
  36 #include <stdlib.h>
  37 #include <stdarg.h>
  38 #include <stdio.h>
  39 #include <string.h>
  40
  41 #define NONAMELESSUNION
  42 #define NONAMELESSSTRUCT
  43 #include "windef.h"
  44 #include "winbase.h"
  45 #include "winuser.h"
  46 #include "objbase.h"
  47 #include "ole2.h"
  48 #include "rpc.h"
  49 #include "winerror.h"
  50 #include "winreg.h"
  51 #include "wtypes.h"
  52
  53 #include "compobj_private.h"
  54
  55 #include "wine/debug.h"
  56
  57 WINE_DEFAULT_DEBUG_CHANNEL(ole);
  58
  59 const CLSID CLSID_DfMarshal       = { 0x0000030b, 0, 0, {0xc0, 0, 0, 0, 0, 0, 0, 0x46} };
  60 const CLSID CLSID_PSFactoryBuffer = { 0x00000320, 0, 0, {0xc0, 0, 0, 0, 0, 0, 0, 0x46} };
  61
  62 /* From: http://msdn.microsoft.com/library/en-us/com/cmi_m_4lda.asp
  63  *
  64  * The first time a client requests a pointer to an interface on a
  65  * particular object, COM loads an IClassFactory stub in the server
  66  * process and uses it to marshal the first pointer back to the
  67  * client. In the client process, COM loads the generic proxy for the
  68  * class factory object and calls its implementation of IMarshal to
  69  * unmarshal that first pointer. COM then creates the first interface
  70  * proxy and hands it a pointer to the RPC channel. Finally, COM returns
  71  * the IClassFactory pointer to the client, which uses it to call
  72  * IClassFactory::CreateInstance, passing it a reference to the interface.
  73  *
  74  * Back in the server process, COM now creates a new instance of the
  75  * object, along with a stub for the requested interface. This stub marshals
  76  * the interface pointer back to the client process, where another object
  77  * proxy is created, this time for the object itself. Also created is a
  78  * proxy for the requested interface, a pointer to which is returned to
  79  * the client. With subsequent calls to other interfaces on the object,
  80  * COM will load the appropriate interface stubs and proxies as needed.
  81  */
  82 typedef struct _CFStub {
  83     ICOM_VTABLE(IRpcStubBuffer) *lpvtbl;
  84     DWORD                       ref;
  85
  86     LPUNKNOWN                   pUnkServer;
  87 } CFStub;
  88
  89 static HRESULT WINAPI
  90 CFStub_QueryInterface(LPRPCSTUBBUFFER iface, REFIID riid, LPVOID *ppv) {
  91     if (IsEqualIID(&IID_IUnknown,riid)||IsEqualIID(&IID_IRpcStubBuffer,riid)) {
  92         *ppv = (LPVOID)iface;
  93         IUnknown_AddRef(iface);
  94         return S_OK;
  95     }
  96     FIXME("(%s), interface not supported.\n",debugstr_guid(riid));
  97     return E_NOINTERFACE;
  98 }
  99
 100 static ULONG WINAPI
 101 CFStub_AddRef(LPRPCSTUBBUFFER iface) {
 102     ICOM_THIS(CFStub,iface);
 103
 104     This->ref++;
 105     return This->ref;
 106 }
 107
 108 static ULONG WINAPI
 109 CFStub_Release(LPRPCSTUBBUFFER iface) {
 110     ICOM_THIS(CFStub,iface);
 111
 112     This->ref--;
 113     if (This->ref)
 114         return This->ref;
 115     HeapFree(GetProcessHeap(),0,This);
 116     return 0;
 117 }
 118
 119 static HRESULT WINAPI
 120 CFStub_Connect(LPRPCSTUBBUFFER iface, IUnknown *pUnkServer) {
 121     ICOM_THIS(CFStub,iface);
 122
 123     This->pUnkServer = pUnkServer;
 124     IUnknown_AddRef(pUnkServer);
 125     return S_OK;
 126 }
 127
 128 static void WINAPI
 129 CFStub_Disconnect(LPRPCSTUBBUFFER iface) {
 130     ICOM_THIS(CFStub,iface);
 131
 132     IUnknown_Release(This->pUnkServer);
 133     This->pUnkServer = NULL;
 134 }
 135 static HRESULT WINAPI
 136 CFStub_Invoke(
 137     LPRPCSTUBBUFFER iface,RPCOLEMESSAGE* msg,IRpcChannelBuffer* chanbuf
 138 ) {
 139     ICOM_THIS(CFStub,iface);
 140     HRESULT hres;
 141
 142     if (msg->iMethod == 3) { /* CreateInstance */
 143         IID iid;
 144         IClassFactory   *classfac;
 145         IUnknown        *ppv;
 146         IStream         *pStm;
 147         STATSTG         ststg;
 148         ULARGE_INTEGER  newpos;
 149         LARGE_INTEGER   seekto;
 150         ULONG           res;
 151
 152         if (msg->cbBuffer < sizeof(IID)) {
 153             FIXME("Not enough bytes in buffer (%ld instead of %d)?\n",msg->cbBuffer,sizeof(IID));
 154             return E_FAIL;
 155         }
 156         memcpy(&iid,msg->Buffer,sizeof(iid));
 157         TRACE("->CreateInstance(%s)\n",debugstr_guid(&iid));
 158         hres = IUnknown_QueryInterface(This->pUnkServer,&IID_IClassFactory,(LPVOID*)&classfac);
 159         if (hres) {
 160             FIXME("Ole server does not provide a IClassFactory?\n");
 161             return hres;
 162         }
 163         hres = IClassFactory_CreateInstance(classfac,NULL,&iid,(LPVOID*)&ppv);
 164         IClassFactory_Release(classfac);
 165         if (hres) {
 166             msg->cbBuffer = 0;
 167             FIXME("Failed to create an instance of %s\n",debugstr_guid(&iid));
 168             return hres;
 169         }
 170         hres = CreateStreamOnHGlobal(0,TRUE,&pStm);
 171         if (hres) {
 172             FIXME("Failed to create stream on hglobal\n");
 173             return hres;
 174         }
 175         hres = CoMarshalInterface(pStm,&iid,ppv,0,NULL,0);
 176         if (hres) {
 177             FIXME("CoMarshalInterface failed, %lx!\n",hres);
 178             msg->cbBuffer = 0;
 179             return hres;
 180         }
 181         hres = IStream_Stat(pStm,&ststg,0);
 182         if (hres) {
 183             FIXME("Stat failed.\n");
 184             return hres;
 185         }
 186
 187         msg->cbBuffer = ststg.cbSize.s.LowPart;
 188
 189         if (msg->Buffer)
 190             msg->Buffer = HeapReAlloc(GetProcessHeap(),0,msg->Buffer,ststg.cbSize.s.LowPart);
 191         else
 192             msg->Buffer = HeapAlloc(GetProcessHeap(),0,ststg.cbSize.s.LowPart);
 193
 194         seekto.s.LowPart = 0;seekto.s.HighPart = 0;
 195         hres = IStream_Seek(pStm,seekto,SEEK_SET,&newpos);
 196         if (hres) {
 197             FIXME("IStream_Seek failed, %lx\n",hres);
 198             return hres;
 199         }
 200         hres = IStream_Read(pStm,msg->Buffer,msg->cbBuffer,&res);
 201         if (hres) {
 202             FIXME("Stream Read failed, %lx\n",hres);
 203             return hres;
 204         }
 205         IStream_Release(pStm);
 206         return S_OK;
 207     }
 208     FIXME("(%p,%p), stub!\n",msg,chanbuf);
 209     FIXME("iMethod is %ld\n",msg->iMethod);
 210     FIXME("cbBuffer is %ld\n",msg->cbBuffer);
 211     return E_FAIL;
 212 }
 213
 214 static LPRPCSTUBBUFFER WINAPI
 215 CFStub_IsIIDSupported(LPRPCSTUBBUFFER iface,REFIID riid) {
 216     FIXME("(%s), stub!\n",debugstr_guid(riid));
 217     return NULL;
 218 }
 219
 220 static ULONG WINAPI
 221 CFStub_CountRefs(LPRPCSTUBBUFFER iface) {
 222     FIXME("(), stub!\n");
 223     return 1;
 224 }
 225
 226 static HRESULT WINAPI
 227 CFStub_DebugServerQueryInterface(LPRPCSTUBBUFFER iface,void** ppv) {
 228     FIXME("(%p), stub!\n",ppv);
 229     return E_FAIL;
 230 }
 231 static void    WINAPI
 232 CFStub_DebugServerRelease(LPRPCSTUBBUFFER iface,void *pv) {
 233     FIXME("(%p), stub!\n",pv);
 234 }
 235
 236 static ICOM_VTABLE(IRpcStubBuffer) cfstubvt = {
 237     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 238     CFStub_QueryInterface,
 239     CFStub_AddRef,
 240     CFStub_Release,
 241     CFStub_Connect,
 242     CFStub_Disconnect,
 243     CFStub_Invoke,
 244     CFStub_IsIIDSupported,
 245     CFStub_CountRefs,
 246     CFStub_DebugServerQueryInterface,
 247     CFStub_DebugServerRelease
 248 };
 249
 250 static HRESULT
 251 CFStub_Construct(LPRPCSTUBBUFFER *ppv) {
 252     CFStub *cfstub;
 253     cfstub = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(CFStub));
 254     if (!cfstub)
 255         return E_OUTOFMEMORY;
 256     *ppv = (LPRPCSTUBBUFFER)cfstub;
 257     cfstub->lpvtbl      = &cfstubvt;
 258     cfstub->ref         = 1;
 259     return S_OK;
 260 }
 261
 262 /* Since we create proxy buffers and classfactory in a pair, there is
 263  * no need for 2 separate structs. Just put them in one, but remember
 264  * the refcount.
 265  */
 266 typedef struct _CFProxy {
 267     ICOM_VTABLE(IClassFactory)          *lpvtbl_cf;
 268     ICOM_VTABLE(IRpcProxyBuffer)        *lpvtbl_proxy;
 269     DWORD                               ref;
 270
 271     IRpcChannelBuffer                   *chanbuf;
 272 } CFProxy;
 273
 274 static HRESULT WINAPI IRpcProxyBufferImpl_QueryInterface(LPRPCPROXYBUFFER iface,REFIID riid,LPVOID *ppv) {
 275     *ppv = NULL;
 276     if (IsEqualIID(riid,&IID_IRpcProxyBuffer)||IsEqualIID(riid,&IID_IUnknown)) {
 277         IRpcProxyBuffer_AddRef(iface);
 278         *ppv = (LPVOID)iface;
 279         return S_OK;
 280     }
 281     FIXME("(%s), no interface.\n",debugstr_guid(riid));
 282     return E_NOINTERFACE;
 283 }
 284
 285 static ULONG WINAPI IRpcProxyBufferImpl_AddRef(LPRPCPROXYBUFFER iface) {
 286     ICOM_THIS_MULTI(CFProxy,lpvtbl_proxy,iface);
 287     return ++(This->ref);
 288 }
 289
 290 static ULONG WINAPI IRpcProxyBufferImpl_Release(LPRPCPROXYBUFFER iface) {
 291     ICOM_THIS_MULTI(CFProxy,lpvtbl_proxy,iface);
 292
 293     if (!--(This->ref)) {
 294         IRpcChannelBuffer_Release(This->chanbuf);This->chanbuf = NULL;
 295         HeapFree(GetProcessHeap(),0,This);
 296         return 0;
 297     }
 298     return This->ref;
 299 }
 300
 301 static HRESULT WINAPI IRpcProxyBufferImpl_Connect(LPRPCPROXYBUFFER iface,IRpcChannelBuffer* pRpcChannelBuffer) {
 302     ICOM_THIS_MULTI(CFProxy,lpvtbl_proxy,iface);
 303
 304     This->chanbuf = pRpcChannelBuffer;
 305     IRpcChannelBuffer_AddRef(This->chanbuf);
 306     return S_OK;
 307 }
 308 static void WINAPI IRpcProxyBufferImpl_Disconnect(LPRPCPROXYBUFFER iface) {
 309     ICOM_THIS_MULTI(CFProxy,lpvtbl_proxy,iface);
 310     if (This->chanbuf) {
 311         IRpcChannelBuffer_Release(This->chanbuf);
 312         This->chanbuf = NULL;
 313     }
 314 }
 315
 316 static HRESULT WINAPI
 317 CFProxy_QueryInterface(LPCLASSFACTORY iface,REFIID riid, LPVOID *ppv) {
 318     *ppv = NULL;
 319     if (IsEqualIID(&IID_IClassFactory,riid) || IsEqualIID(&IID_IUnknown,riid)) {
 320         *ppv = (LPVOID)iface;
 321         IClassFactory_AddRef(iface);
 322         return S_OK;
 323     }
 324     if (IsEqualIID(riid,&IID_IMarshal)) /* just to avoid debug output */
 325         return E_NOINTERFACE;
 326     FIXME("Unhandled interface: %s\n",debugstr_guid(riid));
 327     return E_NOINTERFACE;
 328 }
 329
 330 static ULONG   WINAPI CFProxy_AddRef(LPCLASSFACTORY iface) {
 331     ICOM_THIS_MULTI(CFProxy,lpvtbl_cf,iface);
 332     This->ref++;
 333     return This->ref;
 334 }
 335
 336 static ULONG   WINAPI CFProxy_Release(LPCLASSFACTORY iface) {
 337     ICOM_THIS_MULTI(CFProxy,lpvtbl_cf,iface);
 338     This->ref--;
 339     if (This->ref)
 340         return This->ref;
 341     HeapFree(GetProcessHeap(),0,This);
 342     return 0;
 343 }
 344
 345 static HRESULT WINAPI CFProxy_CreateInstance(
 346     LPCLASSFACTORY iface,
 347     LPUNKNOWN pUnkOuter,/* [in] */
 348     REFIID riid,        /* [in] */
 349     LPVOID *ppv         /* [out] */
 350 ) {
 351     ICOM_THIS_MULTI(CFProxy,lpvtbl_cf,iface);
 352     HRESULT             hres;
 353     LPSTREAM            pStream;
 354     HGLOBAL             hGlobal;
 355     ULONG               srstatus;
 356     RPCOLEMESSAGE       msg;
 357
 358     TRACE("(%p,%s,%p)\n",pUnkOuter,debugstr_guid(riid),ppv);
 359
 360     /* Send CreateInstance to the remote classfactory.
 361      *
 362      * Data: Only the 'IID'.
 363      */
 364     msg.iMethod  = 3;
 365     msg.cbBuffer = sizeof(*riid);
 366     msg.Buffer   = NULL;
 367     hres = IRpcChannelBuffer_GetBuffer(This->chanbuf,&msg,&IID_IClassFactory);
 368     if (hres) {
 369         FIXME("IRpcChannelBuffer_GetBuffer failed with %lx?\n",hres);
 370         return hres;
 371     }
 372     memcpy(msg.Buffer,riid,sizeof(*riid));
 373     hres = IRpcChannelBuffer_SendReceive(This->chanbuf,&msg,&srstatus);
 374     if (hres) {
 375         FIXME("IRpcChannelBuffer_SendReceive failed with %lx?\n",hres);
 376         return hres;
 377     }
 378
 379     if (!msg.cbBuffer) /* interface not found on remote */
 380         return srstatus;
 381
 382     /* We got back: [Marshalled Interface data] */
 383     TRACE("got %ld bytes data.\n",msg.cbBuffer);
 384     hGlobal = GlobalAlloc(GMEM_MOVEABLE|GMEM_NODISCARD|GMEM_SHARE,msg.cbBuffer);
 385     memcpy(GlobalLock(hGlobal),msg.Buffer,msg.cbBuffer);
 386     hres = CreateStreamOnHGlobal(hGlobal,TRUE,&pStream);
 387     if (hres) {
 388         FIXME("CreateStreamOnHGlobal failed with %lx\n",hres);
 389         return hres;
 390     }
 391     hres = CoUnmarshalInterface(
 392             pStream,
 393             riid,
 394             ppv
 395     );
 396     IStream_Release(pStream); /* Does GlobalFree hGlobal too. */
 397     if (hres) {
 398         FIXME("CoMarshalInterface failed, %lx\n",hres);
 399         return hres;
 400     }
 401     return S_OK;
 402 }
 403
 404 static HRESULT WINAPI CFProxy_LockServer(LPCLASSFACTORY iface,BOOL fLock) {
 405     /*ICOM_THIS_MULTI(CFProxy,lpvtbl_cf,iface);*/
 406     FIXME("(%d), stub!\n",fLock);
 407     /* basically: write BOOL, read empty */
 408     return S_OK;
 409 }
 410
 411 static ICOM_VTABLE(IRpcProxyBuffer) pspbvtbl = {
 412     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 413     IRpcProxyBufferImpl_QueryInterface,
 414     IRpcProxyBufferImpl_AddRef,
 415     IRpcProxyBufferImpl_Release,
 416     IRpcProxyBufferImpl_Connect,
 417     IRpcProxyBufferImpl_Disconnect
 418 };
 419 static ICOM_VTABLE(IClassFactory) cfproxyvt = {
 420     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 421     CFProxy_QueryInterface,
 422     CFProxy_AddRef,
 423     CFProxy_Release,
 424     CFProxy_CreateInstance,
 425     CFProxy_LockServer
 426 };
 427
 428 static HRESULT
 429 CFProxy_Construct(LPVOID *ppv,LPVOID *ppProxy) {
 430     CFProxy *cf;
 431
 432     cf = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(CFProxy));
 433     if (!cf)
 434         return E_OUTOFMEMORY;
 435
 436     cf->lpvtbl_cf       = &cfproxyvt;
 437     cf->lpvtbl_proxy    = &pspbvtbl;
 438     cf->ref             = 2; /* we return 2 references to the object! */
 439     *ppv                = &(cf->lpvtbl_cf);
 440     *ppProxy            = &(cf->lpvtbl_proxy);
 441     return S_OK;
 442 }
 443
 444
 445 /********************* OLE Proxy/Stub Factory ********************************/
 446 static HRESULT WINAPI
 447 PSFacBuf_QueryInterface(LPPSFACTORYBUFFER iface, REFIID iid, LPVOID *ppv) {
 448     if (IsEqualIID(iid,&IID_IPSFactoryBuffer)||IsEqualIID(iid,&IID_IUnknown)) {
 449         *ppv = (LPVOID)iface;
 450         /* No ref counting, static class */
 451         return S_OK;
 452     }
 453     FIXME("(%s) unknown IID?\n",debugstr_guid(iid));
 454     return E_NOINTERFACE;
 455 }
 456
 457 static ULONG WINAPI PSFacBuf_AddRef(LPPSFACTORYBUFFER iface) { return 2; }
 458 static ULONG WINAPI PSFacBuf_Release(LPPSFACTORYBUFFER iface) { return 1; }
 459
 460 static HRESULT WINAPI
 461 PSFacBuf_CreateProxy(
 462     LPPSFACTORYBUFFER iface, IUnknown* pUnkOuter, REFIID riid,
 463     IRpcProxyBuffer **ppProxy, LPVOID *ppv
 464 ) {
 465     if (IsEqualIID(&IID_IClassFactory,riid) ||
 466         IsEqualIID(&IID_IUnknown,riid)
 467     )
 468         return CFProxy_Construct(ppv,(LPVOID*)ppProxy);
 469     FIXME("proxying not implemented for (%s) yet!\n",debugstr_guid(riid));
 470     return E_FAIL;
 471 }
 472
 473 static HRESULT WINAPI
 474 PSFacBuf_CreateStub(
 475     LPPSFACTORYBUFFER iface, REFIID riid,IUnknown *pUnkServer,
 476     IRpcStubBuffer** ppStub
 477 ) {
 478     HRESULT hres;
 479
 480     TRACE("(%s,%p,%p)\n",debugstr_guid(riid),pUnkServer,ppStub);
 481
 482     if (IsEqualIID(&IID_IClassFactory,riid) ||
 483         IsEqualIID(&IID_IUnknown,riid)
 484     ) {
 485         hres = CFStub_Construct(ppStub);
 486         if (!hres)
 487             IRpcStubBuffer_Connect((*ppStub),pUnkServer);
 488         return hres;
 489     }
 490     FIXME("stubbing not implemented for (%s) yet!\n",debugstr_guid(riid));
 491     return E_FAIL;
 492 }
 493
 494 static ICOM_VTABLE(IPSFactoryBuffer) psfacbufvtbl = {
 495     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 496     PSFacBuf_QueryInterface,
 497     PSFacBuf_AddRef,
 498     PSFacBuf_Release,
 499     PSFacBuf_CreateProxy,
 500     PSFacBuf_CreateStub
 501 };
 502
 503 /* This is the whole PSFactoryBuffer object, just the vtableptr */
 504 static ICOM_VTABLE(IPSFactoryBuffer) *lppsfac = &psfacbufvtbl;
 505
 506 /***********************************************************************
 507  *           DllGetClassObject [OLE32.@]
 508  */
 509 HRESULT WINAPI OLE32_DllGetClassObject(REFCLSID rclsid, REFIID iid,LPVOID *ppv)
 510 {
 511     *ppv = NULL;
 512     if (IsEqualIID(rclsid,&CLSID_PSFactoryBuffer)) {
 513         *ppv = &lppsfac;
 514         /* If we create a ps factory, we might need a stub manager later
 515          * anyway
 516          */
 517         STUBMGR_Start();
 518         return S_OK;
 519     }
 520     if (IsEqualIID(rclsid,&CLSID_DfMarshal)&&(
 521                 IsEqualIID(iid,&IID_IClassFactory) ||
 522                 IsEqualIID(iid,&IID_IUnknown)
 523         )
 524     )
 525         return MARSHAL_GetStandardMarshalCF(ppv);
 526     if (IsEqualIID(rclsid,&CLSID_StdGlobalInterfaceTable) && (IsEqualIID(iid,&IID_IClassFactory) || IsEqualIID(iid,&IID_IUnknown)))
 527         return StdGlobalInterfaceTable_GetFactory(ppv);
 528
 529     FIXME("\n\tCLSID:\t%s,\n\tIID:\t%s\n",debugstr_guid(rclsid),debugstr_guid(iid));
 530     return CLASS_E_CLASSNOTAVAILABLE;
 531 }