dlls/rpcrt4/cstub.c

   1 /*
   2  * COM stub (CStdStubBuffer) implementation
   3  *
   4  * Copyright 2001 Ove Kåven, TransGaming Technologies
   5  * Copyright 2009 Alexandre Julliard
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include <stdarg.h>
  26
  27 #define COBJMACROS
  28
  29 #include "windef.h"
  30 #include "winbase.h"
  31 #include "winerror.h"
  32 #include "excpt.h"
  33
  34 #include "objbase.h"
  35 #include "rpcproxy.h"
  36
  37 #include "wine/debug.h"
  38 #include "wine/exception.h"
  39
  40 #include "cpsf.h"
  41
  42 WINE_DEFAULT_DEBUG_CHANNEL(ole);
  43
  44 #define STUB_HEADER(This) (((const CInterfaceStubHeader*)((This)->lpVtbl))[-1])
  45
  46 static LONG WINAPI stub_filter(EXCEPTION_POINTERS *eptr)
  47 {
  48     if (eptr->ExceptionRecord->ExceptionFlags & EXCEPTION_NONCONTINUABLE)
  49         return EXCEPTION_CONTINUE_SEARCH;
  50     return EXCEPTION_EXECUTE_HANDLER;
  51 }
  52
  53 typedef struct
  54 {
  55     IUnknownVtbl *base_obj;
  56     IRpcStubBuffer *base_stub;
  57     CStdStubBuffer stub_buffer;
  58 } cstdstubbuffer_delegating_t;
  59
  60 static inline cstdstubbuffer_delegating_t *impl_from_delegating( IRpcStubBuffer *iface )
  61 {
  62     return CONTAINING_RECORD(iface, cstdstubbuffer_delegating_t, stub_buffer);
  63 }
  64
  65 HRESULT CStdStubBuffer_Construct(REFIID riid,
  66                                  LPUNKNOWN pUnkServer,
  67                                  PCInterfaceName name,
  68                                  CInterfaceStubVtbl *vtbl,
  69                                  LPPSFACTORYBUFFER pPSFactory,
  70                                  LPRPCSTUBBUFFER *ppStub)
  71 {
  72   CStdStubBuffer *This;
  73   IUnknown *pvServer;
  74   HRESULT r;
  75   TRACE("(%p,%p,%p,%p) %s\n", pUnkServer, vtbl, pPSFactory, ppStub, name);
  76   TRACE("iid=%s\n", debugstr_guid(vtbl->header.piid));
  77   TRACE("vtbl=%p\n", &vtbl->Vtbl);
  78
  79   if (!IsEqualGUID(vtbl->header.piid, riid)) {
  80     ERR("IID mismatch during stub creation\n");
  81     return RPC_E_UNEXPECTED;
  82   }
  83
  84   r = IUnknown_QueryInterface(pUnkServer, riid, (void**)&pvServer);
  85   if(FAILED(r))
  86     return r;
  87
  88   This = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(CStdStubBuffer));
  89   if (!This) {
  90     IUnknown_Release(pvServer);
  91     return E_OUTOFMEMORY;
  92   }
  93
  94   This->lpVtbl = &vtbl->Vtbl;
  95   This->RefCount = 1;
  96   This->pvServerObject = pvServer;
  97   This->pPSFactory = pPSFactory;
  98   *ppStub = (LPRPCSTUBBUFFER)This;
  99
 100   IPSFactoryBuffer_AddRef(pPSFactory);
 101   return S_OK;
 102 }
 103
 104 static CRITICAL_SECTION delegating_vtbl_section;
 105 static CRITICAL_SECTION_DEBUG critsect_debug =
 106 {
 107     0, 0, &delegating_vtbl_section,
 108     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
 109       0, 0, { (DWORD_PTR)(__FILE__ ": delegating_vtbl_section") }
 110 };
 111 static CRITICAL_SECTION delegating_vtbl_section = { &critsect_debug, -1, 0, 0, 0, 0 };
 112
 113 typedef struct
 114 {
 115     DWORD ref;
 116     DWORD size;
 117     IUnknownVtbl vtbl;
 118     /* remaining entries in vtbl */
 119 } ref_counted_vtbl;
 120
 121 static ref_counted_vtbl *current_vtbl;
 122
 123
 124 static HRESULT WINAPI delegating_QueryInterface(IUnknown *pUnk, REFIID iid, void **ppv)
 125 {
 126     *ppv = pUnk;
 127     return S_OK;
 128 }
 129
 130 static ULONG WINAPI delegating_AddRef(IUnknown *pUnk)
 131 {
 132     return 1;
 133 }
 134
 135 static ULONG WINAPI delegating_Release(IUnknown *pUnk)
 136 {
 137     return 1;
 138 }
 139
 140 /* The idea here is to replace the first param on the stack
 141    ie. This (which will point to cstdstubbuffer_delegating_t)
 142    with This->stub_buffer.pvServerObject and then jump to the
 143    relevant offset in This->stub_buffer.pvServerObject's vtbl.
 144 */
 145 #ifdef __i386__
 146
 147 #include "pshpack1.h"
 148 typedef struct {
 149     BYTE mov1[4];    /* mov 0x4(%esp),%eax     8b 44 24 04 */
 150     BYTE mov2[3];    /* mov 0x10(%eax),%eax    8b 40 10 */
 151     BYTE mov3[4];    /* mov %eax,0x4(%esp)     89 44 24 04 */
 152     BYTE mov4[2];    /* mov (%eax),%eax        8b 00 */
 153     BYTE mov5[2];    /* jmp *offset(%eax)      ff a0 offset */
 154     DWORD offset;
 155     BYTE pad[1];     /* nop                    90 */
 156 } vtbl_method_t;
 157 #include "poppack.h"
 158
 159 static const BYTE opcodes[20] = { 0x8b, 0x44, 0x24, 0x04, 0x8b, 0x40, 0x10, 0x89, 0x44, 0x24, 0x04,
 160                                   0x8b, 0x00, 0xff, 0xa0, 0, 0, 0, 0, 0x90 };
 161
 162 #elif defined(__x86_64__)
 163
 164 #include "pshpack1.h"
 165 typedef struct
 166 {
 167     BYTE mov1[4];    /* movq 0x20(%rcx),%rcx   48 8b 49 20 */
 168     BYTE mov2[3];    /* movq (%rcx),%rax       48 8b 01 */
 169     BYTE jmp[2];     /* jmp *offset(%rax)      ff a0 offset */
 170     DWORD offset;
 171     BYTE pad[3];     /* lea 0x0(%rsi),%rsi     48 8d 36 */
 172 } vtbl_method_t;
 173 #include "poppack.h"
 174
 175 static const BYTE opcodes[16] = { 0x48, 0x8b, 0x49, 0x20, 0x48, 0x8b, 0x01,
 176                                   0xff, 0xa0, 0, 0, 0, 0, 0x48, 0x8d, 0x36 };
 177 #else
 178
 179 #warning You must implement delegated proxies/stubs for your CPU
 180 typedef struct
 181 {
 182     DWORD offset;
 183 } vtbl_method_t;
 184 static const BYTE opcodes[1];
 185
 186 #endif
 187
 188 #define BLOCK_SIZE 1024
 189 #define MAX_BLOCKS 64  /* 64k methods should be enough for anybody */
 190
 191 static const vtbl_method_t *method_blocks[MAX_BLOCKS];
 192
 193 static const vtbl_method_t *allocate_block( unsigned int num )
 194 {
 195     unsigned int i;
 196     vtbl_method_t *prev, *block;
 197     DWORD oldprot;
 198
 199     block = VirtualAlloc( NULL, BLOCK_SIZE * sizeof(*block),
 200                           MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE );
 201     if (!block) return NULL;
 202
 203     for (i = 0; i < BLOCK_SIZE; i++)
 204     {
 205         memcpy( &block[i], opcodes, sizeof(opcodes) );
 206         block[i].offset = (BLOCK_SIZE * num + i + 3) * sizeof(void *);
 207     }
 208     VirtualProtect( block, BLOCK_SIZE * sizeof(*block), PAGE_EXECUTE_READ, &oldprot );
 209     prev = InterlockedCompareExchangePointer( (void **)&method_blocks[num], block, NULL );
 210     if (prev) /* someone beat us to it */
 211     {
 212         VirtualFree( block, 0, MEM_RELEASE );
 213         block = prev;
 214     }
 215     return block;
 216 }
 217
 218 static BOOL fill_delegated_stub_table(IUnknownVtbl *vtbl, DWORD num)
 219 {
 220     const void **entry = (const void **)(vtbl + 1);
 221     DWORD i, j;
 222
 223     if (num - 3 > BLOCK_SIZE * MAX_BLOCKS)
 224     {
 225         FIXME( "%u methods not supported\n", num );
 226         return FALSE;
 227     }
 228     vtbl->QueryInterface = delegating_QueryInterface;
 229     vtbl->AddRef = delegating_AddRef;
 230     vtbl->Release = delegating_Release;
 231     for (i = 0; i < (num - 3 + BLOCK_SIZE - 1) / BLOCK_SIZE; i++)
 232     {
 233         const vtbl_method_t *block = method_blocks[i];
 234         if (!block && !(block = allocate_block( i ))) return FALSE;
 235         for (j = 0; j < BLOCK_SIZE && j < num - 3 - i * BLOCK_SIZE; j++) *entry++ = &block[j];
 236     }
 237     return TRUE;
 238 }
 239
 240 BOOL fill_delegated_proxy_table(IUnknownVtbl *vtbl, DWORD num)
 241 {
 242     const void **entry = (const void **)(vtbl + 1);
 243     DWORD i, j;
 244
 245     if (num - 3 > BLOCK_SIZE * MAX_BLOCKS)
 246     {
 247         FIXME( "%u methods not supported\n", num );
 248         return FALSE;
 249     }
 250     vtbl->QueryInterface = IUnknown_QueryInterface_Proxy;
 251     vtbl->AddRef = IUnknown_AddRef_Proxy;
 252     vtbl->Release = IUnknown_Release_Proxy;
 253     for (i = 0; i < (num - 3 + BLOCK_SIZE - 1) / BLOCK_SIZE; i++)
 254     {
 255         const vtbl_method_t *block = method_blocks[i];
 256         if (!block && !(block = allocate_block( i ))) return FALSE;
 257         for (j = 0; j < BLOCK_SIZE && j < num - 3 - i * BLOCK_SIZE; j++, entry++)
 258             if (!*entry) *entry = &block[j];
 259     }
 260     return TRUE;
 261 }
 262
 263 static IUnknownVtbl *get_delegating_vtbl(DWORD num_methods)
 264 {
 265     IUnknownVtbl *ret;
 266
 267     if (num_methods < 256) num_methods = 256;  /* avoid frequent reallocations */
 268
 269     EnterCriticalSection(&delegating_vtbl_section);
 270
 271     if(!current_vtbl || num_methods > current_vtbl->size)
 272     {
 273         ref_counted_vtbl *table = HeapAlloc(GetProcessHeap(), 0,
 274                                             FIELD_OFFSET(ref_counted_vtbl, vtbl) + num_methods * sizeof(void*));
 275         if (!table)
 276         {
 277             LeaveCriticalSection(&delegating_vtbl_section);
 278             return NULL;
 279         }
 280
 281         table->ref = 0;
 282         table->size = num_methods;
 283         fill_delegated_stub_table(&table->vtbl, num_methods);
 284
 285         if (current_vtbl && current_vtbl->ref == 0)
 286         {
 287             TRACE("freeing old table\n");
 288             HeapFree(GetProcessHeap(), 0, current_vtbl);
 289         }
 290         current_vtbl = table;
 291     }
 292
 293     current_vtbl->ref++;
 294     ret = &current_vtbl->vtbl;
 295     LeaveCriticalSection(&delegating_vtbl_section);
 296     return ret;
 297 }
 298
 299 static void release_delegating_vtbl(IUnknownVtbl *vtbl)
 300 {
 301     ref_counted_vtbl *table = (ref_counted_vtbl*)((DWORD *)vtbl - 1);
 302
 303     EnterCriticalSection(&delegating_vtbl_section);
 304     table->ref--;
 305     TRACE("ref now %d\n", table->ref);
 306     if(table->ref == 0 && table != current_vtbl)
 307     {
 308         TRACE("... and we're not current so free'ing\n");
 309         HeapFree(GetProcessHeap(), 0, table);
 310     }
 311     LeaveCriticalSection(&delegating_vtbl_section);
 312 }
 313
 314 HRESULT CStdStubBuffer_Delegating_Construct(REFIID riid,
 315                                             LPUNKNOWN pUnkServer,
 316                                             PCInterfaceName name,
 317                                             CInterfaceStubVtbl *vtbl,
 318                                             REFIID delegating_iid,
 319                                             LPPSFACTORYBUFFER pPSFactory,
 320                                             LPRPCSTUBBUFFER *ppStub)
 321 {
 322     cstdstubbuffer_delegating_t *This;
 323     IUnknown *pvServer;
 324     HRESULT r;
 325
 326     TRACE("(%p,%p,%p,%p) %s\n", pUnkServer, vtbl, pPSFactory, ppStub, name);
 327     TRACE("iid=%s delegating to %s\n", debugstr_guid(vtbl->header.piid), debugstr_guid(delegating_iid));
 328     TRACE("vtbl=%p\n", &vtbl->Vtbl);
 329
 330     if (!IsEqualGUID(vtbl->header.piid, riid))
 331     {
 332         ERR("IID mismatch during stub creation\n");
 333         return RPC_E_UNEXPECTED;
 334     }
 335
 336     r = IUnknown_QueryInterface(pUnkServer, riid, (void**)&pvServer);
 337     if(FAILED(r)) return r;
 338
 339     This = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*This));
 340     if (!This)
 341     {
 342         IUnknown_Release(pvServer);
 343         return E_OUTOFMEMORY;
 344     }
 345
 346     This->base_obj = get_delegating_vtbl( vtbl->header.DispatchTableCount );
 347     r = create_stub(delegating_iid, (IUnknown*)&This->base_obj, &This->base_stub);
 348     if(FAILED(r))
 349     {
 350         release_delegating_vtbl(This->base_obj);
 351         HeapFree(GetProcessHeap(), 0, This);
 352         IUnknown_Release(pvServer);
 353         return r;
 354     }
 355
 356     This->stub_buffer.lpVtbl = &vtbl->Vtbl;
 357     This->stub_buffer.RefCount = 1;
 358     This->stub_buffer.pvServerObject = pvServer;
 359     This->stub_buffer.pPSFactory = pPSFactory;
 360     *ppStub = (LPRPCSTUBBUFFER)&This->stub_buffer;
 361
 362     IPSFactoryBuffer_AddRef(pPSFactory);
 363     return S_OK;
 364 }
 365
 366 HRESULT WINAPI CStdStubBuffer_QueryInterface(LPRPCSTUBBUFFER iface,
 367                                             REFIID riid,
 368                                             LPVOID *obj)
 369 {
 370   CStdStubBuffer *This = (CStdStubBuffer *)iface;
 371   TRACE("(%p)->QueryInterface(%s,%p)\n",This,debugstr_guid(riid),obj);
 372
 373   if (IsEqualIID(&IID_IUnknown, riid) ||
 374       IsEqualIID(&IID_IRpcStubBuffer, riid))
 375   {
 376     IRpcStubBuffer_AddRef(iface);
 377     *obj = iface;
 378     return S_OK;
 379   }
 380   *obj = NULL;
 381   return E_NOINTERFACE;
 382 }
 383
 384 ULONG WINAPI CStdStubBuffer_AddRef(LPRPCSTUBBUFFER iface)
 385 {
 386   CStdStubBuffer *This = (CStdStubBuffer *)iface;
 387   TRACE("(%p)->AddRef()\n",This);
 388   return InterlockedIncrement(&This->RefCount);
 389 }
 390
 391 ULONG WINAPI NdrCStdStubBuffer_Release(LPRPCSTUBBUFFER iface,
 392                                       LPPSFACTORYBUFFER pPSF)
 393 {
 394   CStdStubBuffer *This = (CStdStubBuffer *)iface;
 395   ULONG refs;
 396
 397   TRACE("(%p)->Release()\n",This);
 398
 399   refs = InterlockedDecrement(&This->RefCount);
 400   if (!refs)
 401   {
 402     /* test_Release shows that native doesn't call Disconnect here.
 403        We'll leave it in for the time being. */
 404     IRpcStubBuffer_Disconnect(iface);
 405
 406     IPSFactoryBuffer_Release(pPSF);
 407     HeapFree(GetProcessHeap(),0,This);
 408   }
 409   return refs;
 410 }
 411
 412 ULONG WINAPI NdrCStdStubBuffer2_Release(LPRPCSTUBBUFFER iface,
 413                                         LPPSFACTORYBUFFER pPSF)
 414 {
 415     cstdstubbuffer_delegating_t *This = impl_from_delegating( iface );
 416     ULONG refs;
 417
 418     TRACE("(%p)->Release()\n", This);
 419
 420     refs = InterlockedDecrement(&This->stub_buffer.RefCount);
 421     if (!refs)
 422     {
 423         /* Just like NdrCStdStubBuffer_Release, we shouldn't call
 424            Disconnect here */
 425         IRpcStubBuffer_Disconnect((IRpcStubBuffer *)&This->stub_buffer);
 426
 427         IRpcStubBuffer_Release(This->base_stub);
 428         release_delegating_vtbl(This->base_obj);
 429
 430         IPSFactoryBuffer_Release(pPSF);
 431         HeapFree(GetProcessHeap(), 0, This);
 432     }
 433
 434     return refs;
 435 }
 436
 437 HRESULT WINAPI CStdStubBuffer_Connect(LPRPCSTUBBUFFER iface,
 438                                      LPUNKNOWN lpUnkServer)
 439 {
 440     CStdStubBuffer *This = (CStdStubBuffer *)iface;
 441     HRESULT r;
 442     IUnknown *new = NULL;
 443
 444     TRACE("(%p)->Connect(%p)\n",This,lpUnkServer);
 445
 446     r = IUnknown_QueryInterface(lpUnkServer, STUB_HEADER(This).piid, (void**)&new);
 447     new = InterlockedExchangePointer((void**)&This->pvServerObject, new);
 448     if(new)
 449         IUnknown_Release(new);
 450     return r;
 451 }
 452
 453 void WINAPI CStdStubBuffer_Disconnect(LPRPCSTUBBUFFER iface)
 454 {
 455     CStdStubBuffer *This = (CStdStubBuffer *)iface;
 456     IUnknown *old;
 457     TRACE("(%p)->Disconnect()\n",This);
 458
 459     old = InterlockedExchangePointer((void**)&This->pvServerObject, NULL);
 460
 461     if(old)
 462         IUnknown_Release(old);
 463 }
 464
 465 HRESULT WINAPI CStdStubBuffer_Invoke(LPRPCSTUBBUFFER iface,
 466                                     PRPCOLEMESSAGE pMsg,
 467                                     LPRPCCHANNELBUFFER pChannel)
 468 {
 469   CStdStubBuffer *This = (CStdStubBuffer *)iface;
 470   DWORD dwPhase = STUB_UNMARSHAL;
 471   HRESULT hr = S_OK;
 472
 473   TRACE("(%p)->Invoke(%p,%p)\n",This,pMsg,pChannel);
 474
 475   __TRY
 476   {
 477     if (STUB_HEADER(This).pDispatchTable)
 478       STUB_HEADER(This).pDispatchTable[pMsg->iMethod](iface, pChannel, (PRPC_MESSAGE)pMsg, &dwPhase);
 479     else /* pure interpreted */
 480       NdrStubCall2(iface, pChannel, (PRPC_MESSAGE)pMsg, &dwPhase);
 481   }
 482   __EXCEPT(stub_filter)
 483   {
 484     DWORD dwExceptionCode = GetExceptionCode();
 485     WARN("a stub call failed with exception 0x%08x (%d)\n", dwExceptionCode, dwExceptionCode);
 486     if (FAILED(dwExceptionCode))
 487       hr = dwExceptionCode;
 488     else
 489       hr = HRESULT_FROM_WIN32(dwExceptionCode);
 490   }
 491   __ENDTRY
 492
 493   return hr;
 494 }
 495
 496 LPRPCSTUBBUFFER WINAPI CStdStubBuffer_IsIIDSupported(LPRPCSTUBBUFFER iface,
 497                                                     REFIID riid)
 498 {
 499   CStdStubBuffer *This = (CStdStubBuffer *)iface;
 500   TRACE("(%p)->IsIIDSupported(%s)\n",This,debugstr_guid(riid));
 501   return IsEqualGUID(STUB_HEADER(This).piid, riid) ? iface : NULL;
 502 }
 503
 504 ULONG WINAPI CStdStubBuffer_CountRefs(LPRPCSTUBBUFFER iface)
 505 {
 506   CStdStubBuffer *This = (CStdStubBuffer *)iface;
 507   TRACE("(%p)->CountRefs()\n",This);
 508   return This->RefCount;
 509 }
 510
 511 HRESULT WINAPI CStdStubBuffer_DebugServerQueryInterface(LPRPCSTUBBUFFER iface,
 512                                                        LPVOID *ppv)
 513 {
 514   CStdStubBuffer *This = (CStdStubBuffer *)iface;
 515   TRACE("(%p)->DebugServerQueryInterface(%p)\n",This,ppv);
 516   return S_OK;
 517 }
 518
 519 void WINAPI CStdStubBuffer_DebugServerRelease(LPRPCSTUBBUFFER iface,
 520                                              LPVOID pv)
 521 {
 522   CStdStubBuffer *This = (CStdStubBuffer *)iface;
 523   TRACE("(%p)->DebugServerRelease(%p)\n",This,pv);
 524 }
 525
 526 const IRpcStubBufferVtbl CStdStubBuffer_Vtbl =
 527 {
 528     CStdStubBuffer_QueryInterface,
 529     CStdStubBuffer_AddRef,
 530     NULL,
 531     CStdStubBuffer_Connect,
 532     CStdStubBuffer_Disconnect,
 533     CStdStubBuffer_Invoke,
 534     CStdStubBuffer_IsIIDSupported,
 535     CStdStubBuffer_CountRefs,
 536     CStdStubBuffer_DebugServerQueryInterface,
 537     CStdStubBuffer_DebugServerRelease
 538 };
 539
 540 static HRESULT WINAPI CStdStubBuffer_Delegating_Connect(LPRPCSTUBBUFFER iface,
 541                                                         LPUNKNOWN lpUnkServer)
 542 {
 543     cstdstubbuffer_delegating_t *This = impl_from_delegating(iface);
 544     HRESULT r;
 545     TRACE("(%p)->Connect(%p)\n", This, lpUnkServer);
 546
 547     r = CStdStubBuffer_Connect(iface, lpUnkServer);
 548     if(SUCCEEDED(r))
 549         r = IRpcStubBuffer_Connect(This->base_stub, (IUnknown*)&This->base_obj);
 550
 551     return r;
 552 }
 553
 554 static void WINAPI CStdStubBuffer_Delegating_Disconnect(LPRPCSTUBBUFFER iface)
 555 {
 556     cstdstubbuffer_delegating_t *This = impl_from_delegating(iface);
 557     TRACE("(%p)->Disconnect()\n", This);
 558
 559     IRpcStubBuffer_Disconnect(This->base_stub);
 560     CStdStubBuffer_Disconnect(iface);
 561 }
 562
 563 static ULONG WINAPI CStdStubBuffer_Delegating_CountRefs(LPRPCSTUBBUFFER iface)
 564 {
 565     cstdstubbuffer_delegating_t *This = impl_from_delegating(iface);
 566     ULONG ret;
 567     TRACE("(%p)->CountRefs()\n", This);
 568
 569     ret = CStdStubBuffer_CountRefs(iface);
 570     ret += IRpcStubBuffer_CountRefs(This->base_stub);
 571
 572     return ret;
 573 }
 574
 575 const IRpcStubBufferVtbl CStdStubBuffer_Delegating_Vtbl =
 576 {
 577     CStdStubBuffer_QueryInterface,
 578     CStdStubBuffer_AddRef,
 579     NULL,
 580     CStdStubBuffer_Delegating_Connect,
 581     CStdStubBuffer_Delegating_Disconnect,
 582     CStdStubBuffer_Invoke,
 583     CStdStubBuffer_IsIIDSupported,
 584     CStdStubBuffer_Delegating_CountRefs,
 585     CStdStubBuffer_DebugServerQueryInterface,
 586     CStdStubBuffer_DebugServerRelease
 587 };
 588
 589 const MIDL_SERVER_INFO *CStdStubBuffer_GetServerInfo(IRpcStubBuffer *iface)
 590 {
 591   CStdStubBuffer *This = (CStdStubBuffer *)iface;
 592   return STUB_HEADER(This).pServerInfo;
 593 }
 594
 595 /************************************************************************
 596  *           NdrStubForwardingFunction [RPCRT4.@]
 597  */
 598 void __RPC_STUB NdrStubForwardingFunction( IRpcStubBuffer *iface, IRpcChannelBuffer *pChannel,
 599                                            PRPC_MESSAGE pMsg, DWORD *pdwStubPhase )
 600 {
 601     /* Note pMsg is passed intact since RPCOLEMESSAGE is basically a RPC_MESSAGE. */
 602
 603     cstdstubbuffer_delegating_t *This = impl_from_delegating(iface);
 604     HRESULT r = IRpcStubBuffer_Invoke(This->base_stub, (RPCOLEMESSAGE*)pMsg, pChannel);
 605     if(FAILED(r)) RpcRaiseException(r);
 606     return;
 607 }
 608
 609 /***********************************************************************
 610  *           NdrStubInitialize [RPCRT4.@]
 611  */
 612 void WINAPI NdrStubInitialize(PRPC_MESSAGE pRpcMsg,
 613                              PMIDL_STUB_MESSAGE pStubMsg,
 614                              PMIDL_STUB_DESC pStubDescriptor,
 615                              LPRPCCHANNELBUFFER pRpcChannelBuffer)
 616 {
 617   TRACE("(%p,%p,%p,%p)\n", pRpcMsg, pStubMsg, pStubDescriptor, pRpcChannelBuffer);
 618   NdrServerInitializeNew(pRpcMsg, pStubMsg, pStubDescriptor);
 619   pStubMsg->pRpcChannelBuffer = pRpcChannelBuffer;
 620   IRpcChannelBuffer_GetDestCtx(pStubMsg->pRpcChannelBuffer,
 621                                &pStubMsg->dwDestContext,
 622                                &pStubMsg->pvDestContext);
 623 }
 624
 625 /***********************************************************************
 626  *           NdrStubGetBuffer [RPCRT4.@]
 627  */
 628 void WINAPI NdrStubGetBuffer(LPRPCSTUBBUFFER iface,
 629                             LPRPCCHANNELBUFFER pRpcChannelBuffer,
 630                             PMIDL_STUB_MESSAGE pStubMsg)
 631 {
 632   CStdStubBuffer *This = (CStdStubBuffer *)iface;
 633   HRESULT hr;
 634
 635   TRACE("(%p, %p, %p)\n", This, pRpcChannelBuffer, pStubMsg);
 636
 637   pStubMsg->RpcMsg->BufferLength = pStubMsg->BufferLength;
 638   hr = IRpcChannelBuffer_GetBuffer(pRpcChannelBuffer,
 639     (RPCOLEMESSAGE *)pStubMsg->RpcMsg, STUB_HEADER(This).piid);
 640   if (FAILED(hr))
 641   {
 642     RpcRaiseException(hr);
 643     return;
 644   }
 645
 646   pStubMsg->Buffer = pStubMsg->RpcMsg->Buffer;
 647 }