dlls/ole32/rpc.c

   1 /*
   2  *      RPC Manager
   3  *
   4  * Copyright 2001  Ove Kåven, TransGaming Technologies
   5  * Copyright 2002  Marcus Meissner
   6  * Copyright 2005  Mike Hearn, Rob Shearman for CodeWeavers
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #include "config.h"
  24 #include "wine/port.h"
  25
  26 #include <stdlib.h>
  27 #include <stdarg.h>
  28 #include <stdio.h>
  29 #include <string.h>
  30 #include <assert.h>
  31
  32 #define COBJMACROS
  33 #define NONAMELESSUNION
  34 #define NONAMELESSSTRUCT
  35
  36 #include "windef.h"
  37 #include "winbase.h"
  38 #include "winuser.h"
  39 #include "winsvc.h"
  40 #include "objbase.h"
  41 #include "ole2.h"
  42 #include "rpc.h"
  43 #include "winerror.h"
  44 #include "winreg.h"
  45 #include "wtypes.h"
  46 #include "wine/unicode.h"
  47
  48 #include "compobj_private.h"
  49
  50 #include "wine/debug.h"
  51
  52 WINE_DEFAULT_DEBUG_CHANNEL(ole);
  53
  54 static void __RPC_STUB dispatch_rpc(RPC_MESSAGE *msg);
  55
  56 /* we only use one function to dispatch calls for all methods - we use the
  57  * RPC_IF_OLE flag to tell the RPC runtime that this is the case */
  58 static RPC_DISPATCH_FUNCTION rpc_dispatch_table[1] = { dispatch_rpc }; /* (RO) */
  59 static RPC_DISPATCH_TABLE rpc_dispatch = { 1, rpc_dispatch_table }; /* (RO) */
  60
  61 static struct list registered_interfaces = LIST_INIT(registered_interfaces); /* (CS csRegIf) */
  62 static CRITICAL_SECTION csRegIf;
  63 static CRITICAL_SECTION_DEBUG csRegIf_debug =
  64 {
  65     0, 0, &csRegIf,
  66     { &csRegIf_debug.ProcessLocksList, &csRegIf_debug.ProcessLocksList },
  67       0, 0, { (DWORD_PTR)(__FILE__ ": dcom registered server interfaces") }
  68 };
  69 static CRITICAL_SECTION csRegIf = { &csRegIf_debug, -1, 0, 0, 0, 0 };
  70
  71 static WCHAR wszRpcTransport[] = {'n','c','a','l','r','p','c',0};
  72
  73
  74 struct registered_if
  75 {
  76     struct list entry;
  77     DWORD refs; /* ref count */
  78     RPC_SERVER_INTERFACE If; /* interface registered with the RPC runtime */
  79 };
  80
  81 /* get the pipe endpoint specified of the specified apartment */
  82 static inline void get_rpc_endpoint(LPWSTR endpoint, const OXID *oxid)
  83 {
  84     /* FIXME: should get endpoint from rpcss */
  85     static const WCHAR wszEndpointFormat[] = {'\\','p','i','p','e','\\','O','L','E','_','%','0','8','l','x','%','0','8','l','x',0};
  86     wsprintfW(endpoint, wszEndpointFormat, (DWORD)(*oxid >> 32),(DWORD)*oxid);
  87 }
  88
  89 typedef struct
  90 {
  91     const IRpcChannelBufferVtbl *lpVtbl;
  92     LONG                  refs;
  93 } RpcChannelBuffer;
  94
  95 typedef struct
  96 {
  97     RpcChannelBuffer       super; /* superclass */
  98
  99     RPC_BINDING_HANDLE     bind; /* handle to the remote server */
 100     OXID                   oxid; /* apartment in which the channel is valid */
 101     DWORD                  dest_context; /* returned from GetDestCtx */
 102     LPVOID                 dest_context_data; /* returned from GetDestCtx */
 103     HANDLE                 event; /* cached event handle */
 104 } ClientRpcChannelBuffer;
 105
 106 struct dispatch_params
 107 {
 108     RPCOLEMESSAGE     *msg; /* message */
 109     IRpcStubBuffer    *stub; /* stub buffer, if applicable */
 110     IRpcChannelBuffer *chan; /* server channel buffer, if applicable */
 111     HANDLE             handle; /* handle that will become signaled when call finishes */
 112     RPC_STATUS         status; /* status (out) */
 113     HRESULT            hr; /* hresult (out) */
 114 };
 115
 116 static HRESULT WINAPI RpcChannelBuffer_QueryInterface(LPRPCCHANNELBUFFER iface, REFIID riid, LPVOID *ppv)
 117 {
 118     *ppv = NULL;
 119     if (IsEqualIID(riid,&IID_IRpcChannelBuffer) || IsEqualIID(riid,&IID_IUnknown))
 120     {
 121         *ppv = (LPVOID)iface;
 122         IUnknown_AddRef(iface);
 123         return S_OK;
 124     }
 125     return E_NOINTERFACE;
 126 }
 127
 128 static ULONG WINAPI RpcChannelBuffer_AddRef(LPRPCCHANNELBUFFER iface)
 129 {
 130     RpcChannelBuffer *This = (RpcChannelBuffer *)iface;
 131     return InterlockedIncrement(&This->refs);
 132 }
 133
 134 static ULONG WINAPI ServerRpcChannelBuffer_Release(LPRPCCHANNELBUFFER iface)
 135 {
 136     RpcChannelBuffer *This = (RpcChannelBuffer *)iface;
 137     ULONG ref;
 138
 139     ref = InterlockedDecrement(&This->refs);
 140     if (ref)
 141         return ref;
 142
 143     HeapFree(GetProcessHeap(), 0, This);
 144     return 0;
 145 }
 146
 147 static ULONG WINAPI ClientRpcChannelBuffer_Release(LPRPCCHANNELBUFFER iface)
 148 {
 149     ClientRpcChannelBuffer *This = (ClientRpcChannelBuffer *)iface;
 150     ULONG ref;
 151
 152     ref = InterlockedDecrement(&This->super.refs);
 153     if (ref)
 154         return ref;
 155
 156     if (This->event) CloseHandle(This->event);
 157     RpcBindingFree(&This->bind);
 158     HeapFree(GetProcessHeap(), 0, This);
 159     return 0;
 160 }
 161
 162 static HRESULT WINAPI ServerRpcChannelBuffer_GetBuffer(LPRPCCHANNELBUFFER iface, RPCOLEMESSAGE* olemsg, REFIID riid)
 163 {
 164     RpcChannelBuffer *This = (RpcChannelBuffer *)iface;
 165     RPC_MESSAGE *msg = (RPC_MESSAGE *)olemsg;
 166     RPC_STATUS status;
 167
 168     TRACE("(%p)->(%p,%s)\n", This, olemsg, debugstr_guid(riid));
 169
 170     status = I_RpcGetBuffer(msg);
 171
 172     TRACE("-- %ld\n", status);
 173
 174     return HRESULT_FROM_WIN32(status);
 175 }
 176
 177 static HRESULT WINAPI ClientRpcChannelBuffer_GetBuffer(LPRPCCHANNELBUFFER iface, RPCOLEMESSAGE* olemsg, REFIID riid)
 178 {
 179     ClientRpcChannelBuffer *This = (ClientRpcChannelBuffer *)iface;
 180     RPC_MESSAGE *msg = (RPC_MESSAGE *)olemsg;
 181     RPC_CLIENT_INTERFACE *cif;
 182     RPC_STATUS status;
 183
 184     TRACE("(%p)->(%p,%s)\n", This, olemsg, debugstr_guid(riid));
 185
 186     cif = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(RPC_CLIENT_INTERFACE));
 187     if (!cif)
 188         return E_OUTOFMEMORY;
 189
 190     cif->Length = sizeof(RPC_CLIENT_INTERFACE);
 191     /* RPC interface ID = COM interface ID */
 192     cif->InterfaceId.SyntaxGUID = *riid;
 193     /* COM objects always have a version of 0.0 */
 194     cif->InterfaceId.SyntaxVersion.MajorVersion = 0;
 195     cif->InterfaceId.SyntaxVersion.MinorVersion = 0;
 196     msg->RpcInterfaceInformation = cif;
 197     msg->Handle = This->bind;
 198
 199     status = I_RpcGetBuffer(msg);
 200
 201     TRACE("-- %ld\n", status);
 202
 203     return HRESULT_FROM_WIN32(status);
 204 }
 205
 206 static HRESULT WINAPI ServerRpcChannelBuffer_SendReceive(LPRPCCHANNELBUFFER iface, RPCOLEMESSAGE *olemsg, ULONG *pstatus)
 207 {
 208     FIXME("stub\n");
 209     return E_NOTIMPL;
 210 }
 211
 212 static HANDLE ClientRpcChannelBuffer_GetEventHandle(ClientRpcChannelBuffer *This)
 213 {
 214     HANDLE event = InterlockedExchangePointer(&This->event, NULL);
 215
 216     /* Note: must be auto-reset event so we can reuse it without a call
 217      * to ResetEvent */
 218     if (!event) event = CreateEventW(NULL, FALSE, FALSE, NULL);
 219
 220     return event;
 221 }
 222
 223 static void ClientRpcChannelBuffer_ReleaseEventHandle(ClientRpcChannelBuffer *This, HANDLE event)
 224 {
 225     if (InterlockedCompareExchangePointer(&This->event, event, NULL))
 226         /* already a handle cached in This */
 227         CloseHandle(event);
 228 }
 229
 230 /* this thread runs an outgoing RPC */
 231 static DWORD WINAPI rpc_sendreceive_thread(LPVOID param)
 232 {
 233     struct dispatch_params *data = (struct dispatch_params *) param;
 234
 235     /* FIXME: trap and rethrow RPC exceptions in app thread */
 236     data->status = I_RpcSendReceive((RPC_MESSAGE *)data->msg);
 237
 238     TRACE("completed with status 0x%lx\n", data->status);
 239
 240     SetEvent(data->handle);
 241
 242     return 0;
 243 }
 244
 245 static inline HRESULT ClientRpcChannelBuffer_IsCorrectApartment(ClientRpcChannelBuffer *This, APARTMENT *apt)
 246 {
 247     OXID oxid;
 248     if (!apt)
 249         return S_FALSE;
 250     if (apartment_getoxid(apt, &oxid) != S_OK)
 251         return S_FALSE;
 252     if (This->oxid != oxid)
 253         return S_FALSE;
 254     return S_OK;
 255 }
 256
 257 static HRESULT WINAPI ClientRpcChannelBuffer_SendReceive(LPRPCCHANNELBUFFER iface, RPCOLEMESSAGE *olemsg, ULONG *pstatus)
 258 {
 259     ClientRpcChannelBuffer *This = (ClientRpcChannelBuffer *)iface;
 260     HRESULT hr;
 261     RPC_MESSAGE *msg = (RPC_MESSAGE *)olemsg;
 262     RPC_STATUS status;
 263     DWORD index;
 264     struct dispatch_params *params;
 265     APARTMENT *apt = NULL;
 266     IPID ipid;
 267
 268     TRACE("(%p) iMethod=%ld\n", olemsg, olemsg->iMethod);
 269
 270     hr = ClientRpcChannelBuffer_IsCorrectApartment(This, COM_CurrentApt());
 271     if (hr != S_OK)
 272     {
 273         ERR("called from wrong apartment, should have been 0x%s\n",
 274             wine_dbgstr_longlong(This->oxid));
 275         return RPC_E_WRONG_THREAD;
 276     }
 277
 278     params = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*params));
 279     if (!params) return E_OUTOFMEMORY;
 280
 281     params->msg = olemsg;
 282     params->status = RPC_S_OK;
 283     params->hr = S_OK;
 284
 285     /* Note: this is an optimization in the Microsoft OLE runtime that we need
 286      * to copy, as shown by the test_no_couninitialize_client test. without
 287      * short-circuiting the RPC runtime in the case below, the test will
 288      * deadlock on the loader lock due to the RPC runtime needing to create
 289      * a thread to process the RPC when this function is called indirectly
 290      * from DllMain */
 291
 292     RpcBindingInqObject(msg->Handle, &ipid);
 293     hr = ipid_get_dispatch_params(&ipid, &apt, &params->stub, &params->chan);
 294     params->handle = ClientRpcChannelBuffer_GetEventHandle(This);
 295     if ((hr == S_OK) && !apt->multi_threaded)
 296     {
 297         TRACE("Calling apartment thread 0x%08lx...\n", apt->tid);
 298
 299         if (!PostMessageW(apartment_getwindow(apt), DM_EXECUTERPC, 0, (LPARAM)params))
 300         {
 301             ERR("PostMessage failed with error %ld\n", GetLastError());
 302             hr = HRESULT_FROM_WIN32(GetLastError());
 303         }
 304     }
 305     else
 306     {
 307         if (hr == S_OK)
 308         {
 309             /* otherwise, we go via RPC runtime so the stub and channel aren't
 310              * needed here */
 311             IRpcStubBuffer_Release(params->stub);
 312             params->stub = NULL;
 313             IRpcChannelBuffer_Release(params->chan);
 314             params->chan = NULL;
 315         }
 316
 317         /* we use a separate thread here because we need to be able to
 318          * pump the message loop in the application thread: if we do not,
 319          * any windows created by this thread will hang and RPCs that try
 320          * and re-enter this STA from an incoming server thread will
 321          * deadlock. InstallShield is an example of that.
 322          */
 323         if (!QueueUserWorkItem(rpc_sendreceive_thread, params, WT_EXECUTEDEFAULT))
 324         {
 325             ERR("QueueUserWorkItem failed with error %lx\n", GetLastError());
 326             hr = E_UNEXPECTED;
 327         }
 328         else
 329             hr = S_OK;
 330     }
 331     if (apt) apartment_release(apt);
 332
 333     if (hr == S_OK)
 334     {
 335         if (WaitForSingleObject(params->handle, 0))
 336             hr = CoWaitForMultipleHandles(0, INFINITE, 1, &params->handle, &index);
 337     }
 338     ClientRpcChannelBuffer_ReleaseEventHandle(This, params->handle);
 339
 340     if (hr == S_OK) hr = params->hr;
 341
 342     status = params->status;
 343     HeapFree(GetProcessHeap(), 0, params);
 344     params = NULL;
 345
 346     if (hr) return hr;
 347
 348     if (pstatus) *pstatus = status;
 349
 350     TRACE("RPC call status: 0x%lx\n", status);
 351     if (status == RPC_S_OK)
 352         hr = S_OK;
 353     else if (status == RPC_S_CALL_FAILED)
 354         hr = *(HRESULT *)olemsg->Buffer;
 355     else
 356         hr = HRESULT_FROM_WIN32(status);
 357
 358     TRACE("-- 0x%08lx\n", hr);
 359
 360     return hr;
 361 }
 362
 363 static HRESULT WINAPI ServerRpcChannelBuffer_FreeBuffer(LPRPCCHANNELBUFFER iface, RPCOLEMESSAGE* olemsg)
 364 {
 365     RPC_MESSAGE *msg = (RPC_MESSAGE *)olemsg;
 366     RPC_STATUS status;
 367
 368     TRACE("(%p)\n", msg);
 369
 370     status = I_RpcFreeBuffer(msg);
 371
 372     TRACE("-- %ld\n", status);
 373
 374     return HRESULT_FROM_WIN32(status);
 375 }
 376
 377 static HRESULT WINAPI ClientRpcChannelBuffer_FreeBuffer(LPRPCCHANNELBUFFER iface, RPCOLEMESSAGE* olemsg)
 378 {
 379     RPC_MESSAGE *msg = (RPC_MESSAGE *)olemsg;
 380     RPC_STATUS status;
 381
 382     TRACE("(%p)\n", msg);
 383
 384     status = I_RpcFreeBuffer(msg);
 385
 386     HeapFree(GetProcessHeap(), 0, msg->RpcInterfaceInformation);
 387     msg->RpcInterfaceInformation = NULL;
 388
 389     TRACE("-- %ld\n", status);
 390
 391     return HRESULT_FROM_WIN32(status);
 392 }
 393
 394 static HRESULT WINAPI ClientRpcChannelBuffer_GetDestCtx(LPRPCCHANNELBUFFER iface, DWORD* pdwDestContext, void** ppvDestContext)
 395 {
 396     ClientRpcChannelBuffer *This = (ClientRpcChannelBuffer *)iface;
 397
 398     TRACE("(%p,%p)\n", pdwDestContext, ppvDestContext);
 399
 400     *pdwDestContext = This->dest_context;
 401     *ppvDestContext = This->dest_context_data;
 402
 403     return S_OK;
 404 }
 405
 406 static HRESULT WINAPI ServerRpcChannelBuffer_GetDestCtx(LPRPCCHANNELBUFFER iface, DWORD* pdwDestContext, void** ppvDestContext)
 407 {
 408     FIXME("(%p,%p), stub!\n", pdwDestContext, ppvDestContext);
 409     return E_FAIL;
 410 }
 411
 412 static HRESULT WINAPI RpcChannelBuffer_IsConnected(LPRPCCHANNELBUFFER iface)
 413 {
 414     TRACE("()\n");
 415     /* native does nothing too */
 416     return S_OK;
 417 }
 418
 419 static const IRpcChannelBufferVtbl ClientRpcChannelBufferVtbl =
 420 {
 421     RpcChannelBuffer_QueryInterface,
 422     RpcChannelBuffer_AddRef,
 423     ClientRpcChannelBuffer_Release,
 424     ClientRpcChannelBuffer_GetBuffer,
 425     ClientRpcChannelBuffer_SendReceive,
 426     ClientRpcChannelBuffer_FreeBuffer,
 427     ClientRpcChannelBuffer_GetDestCtx,
 428     RpcChannelBuffer_IsConnected
 429 };
 430
 431 static const IRpcChannelBufferVtbl ServerRpcChannelBufferVtbl =
 432 {
 433     RpcChannelBuffer_QueryInterface,
 434     RpcChannelBuffer_AddRef,
 435     ServerRpcChannelBuffer_Release,
 436     ServerRpcChannelBuffer_GetBuffer,
 437     ServerRpcChannelBuffer_SendReceive,
 438     ServerRpcChannelBuffer_FreeBuffer,
 439     ServerRpcChannelBuffer_GetDestCtx,
 440     RpcChannelBuffer_IsConnected
 441 };
 442
 443 /* returns a channel buffer for proxies */
 444 HRESULT RPC_CreateClientChannel(const OXID *oxid, const IPID *ipid,
 445                                 DWORD dest_context, void *dest_context_data,
 446                                 IRpcChannelBuffer **chan)
 447 {
 448     ClientRpcChannelBuffer *This;
 449     WCHAR                   endpoint[200];
 450     RPC_BINDING_HANDLE      bind;
 451     RPC_STATUS              status;
 452     LPWSTR                  string_binding;
 453
 454     /* connect to the apartment listener thread */
 455     get_rpc_endpoint(endpoint, oxid);
 456
 457     TRACE("proxy pipe: connecting to endpoint: %s\n", debugstr_w(endpoint));
 458
 459     status = RpcStringBindingComposeW(
 460         NULL,
 461         wszRpcTransport,
 462         NULL,
 463         endpoint,
 464         NULL,
 465         &string_binding);
 466
 467     if (status == RPC_S_OK)
 468     {
 469         status = RpcBindingFromStringBindingW(string_binding, &bind);
 470
 471         if (status == RPC_S_OK)
 472         {
 473             IPID ipid2 = *ipid; /* why can't RpcBindingSetObject take a const? */
 474             status = RpcBindingSetObject(bind, &ipid2);
 475             if (status != RPC_S_OK)
 476                 RpcBindingFree(&bind);
 477         }
 478
 479         RpcStringFreeW(&string_binding);
 480     }
 481
 482     if (status != RPC_S_OK)
 483     {
 484         ERR("Couldn't get binding for endpoint %s, status = %ld\n", debugstr_w(endpoint), status);
 485         return HRESULT_FROM_WIN32(status);
 486     }
 487
 488     This = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
 489     if (!This)
 490     {
 491         RpcBindingFree(&bind);
 492         return E_OUTOFMEMORY;
 493     }
 494
 495     This->super.lpVtbl = &ClientRpcChannelBufferVtbl;
 496     This->super.refs = 1;
 497     This->bind = bind;
 498     apartment_getoxid(COM_CurrentApt(), &This->oxid);
 499     This->dest_context = dest_context;
 500     This->dest_context_data = dest_context_data;
 501     This->event = NULL;
 502
 503     *chan = (IRpcChannelBuffer*)This;
 504
 505     return S_OK;
 506 }
 507
 508 HRESULT RPC_CreateServerChannel(IRpcChannelBuffer **chan)
 509 {
 510     RpcChannelBuffer *This = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
 511     if (!This)
 512         return E_OUTOFMEMORY;
 513
 514     This->lpVtbl = &ServerRpcChannelBufferVtbl;
 515     This->refs = 1;
 516
 517     *chan = (IRpcChannelBuffer*)This;
 518
 519     return S_OK;
 520 }
 521
 522
 523 void RPC_ExecuteCall(struct dispatch_params *params)
 524 {
 525     params->hr = IRpcStubBuffer_Invoke(params->stub, params->msg, params->chan);
 526
 527     IRpcStubBuffer_Release(params->stub);
 528     IRpcChannelBuffer_Release(params->chan);
 529     if (params->handle) SetEvent(params->handle);
 530 }
 531
 532 static void __RPC_STUB dispatch_rpc(RPC_MESSAGE *msg)
 533 {
 534     struct dispatch_params *params;
 535     APARTMENT *apt;
 536     IPID ipid;
 537     HRESULT hr;
 538
 539     RpcBindingInqObject(msg->Handle, &ipid);
 540
 541     TRACE("ipid = %s, iMethod = %d\n", debugstr_guid(&ipid), msg->ProcNum);
 542
 543     params = HeapAlloc(GetProcessHeap(), 0, sizeof(*params));
 544     if (!params) return RpcRaiseException(E_OUTOFMEMORY);
 545
 546     hr = ipid_get_dispatch_params(&ipid, &apt, &params->stub, &params->chan);
 547     if (hr != S_OK)
 548     {
 549         ERR("no apartment found for ipid %s\n", debugstr_guid(&ipid));
 550         return RpcRaiseException(hr);
 551     }
 552
 553     params->msg = (RPCOLEMESSAGE *)msg;
 554     params->status = RPC_S_OK;
 555     params->hr = S_OK;
 556     params->handle = NULL;
 557
 558     /* Note: this is the important difference between STAs and MTAs - we
 559      * always execute RPCs to STAs in the thread that originally created the
 560      * apartment (i.e. the one that pumps messages to the window) */
 561     if (!apt->multi_threaded)
 562     {
 563         params->handle = CreateEventW(NULL, FALSE, FALSE, NULL);
 564
 565         TRACE("Calling apartment thread 0x%08lx...\n", apt->tid);
 566
 567         if (PostMessageW(apartment_getwindow(apt), DM_EXECUTERPC, 0, (LPARAM)params))
 568             WaitForSingleObject(params->handle, INFINITE);
 569         else
 570         {
 571             ERR("PostMessage failed with error %ld\n", GetLastError());
 572             IRpcChannelBuffer_Release(params->chan);
 573             IRpcStubBuffer_Release(params->stub);
 574         }
 575         CloseHandle(params->handle);
 576     }
 577     else
 578     {
 579         BOOL joined = FALSE;
 580         if (!COM_CurrentInfo()->apt)
 581         {
 582             apartment_joinmta();
 583             joined = TRUE;
 584         }
 585         RPC_ExecuteCall(params);
 586         if (joined)
 587         {
 588             apartment_release(COM_CurrentInfo()->apt);
 589             COM_CurrentInfo()->apt = NULL;
 590         }
 591     }
 592
 593     hr = params->hr;
 594     HeapFree(GetProcessHeap(), 0, params);
 595
 596     apartment_release(apt);
 597
 598     /* if IRpcStubBuffer_Invoke fails, we should raise an exception to tell
 599      * the RPC runtime that the call failed */
 600     if (hr) RpcRaiseException(hr);
 601 }
 602
 603 /* stub registration */
 604 HRESULT RPC_RegisterInterface(REFIID riid)
 605 {
 606     struct registered_if *rif;
 607     BOOL found = FALSE;
 608     HRESULT hr = S_OK;
 609
 610     TRACE("(%s)\n", debugstr_guid(riid));
 611
 612     EnterCriticalSection(&csRegIf);
 613     LIST_FOR_EACH_ENTRY(rif, &registered_interfaces, struct registered_if, entry)
 614     {
 615         if (IsEqualGUID(&rif->If.InterfaceId.SyntaxGUID, riid))
 616         {
 617             rif->refs++;
 618             found = TRUE;
 619             break;
 620         }
 621     }
 622     if (!found)
 623     {
 624         TRACE("Creating new interface\n");
 625
 626         rif = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*rif));
 627         if (rif)
 628         {
 629             RPC_STATUS status;
 630
 631             rif->refs = 1;
 632             rif->If.Length = sizeof(RPC_SERVER_INTERFACE);
 633             /* RPC interface ID = COM interface ID */
 634             rif->If.InterfaceId.SyntaxGUID = *riid;
 635             rif->If.DispatchTable = &rpc_dispatch;
 636             /* all other fields are 0, including the version asCOM objects
 637              * always have a version of 0.0 */
 638             status = RpcServerRegisterIfEx(
 639                 (RPC_IF_HANDLE)&rif->If,
 640                 NULL, NULL,
 641                 RPC_IF_OLE | RPC_IF_AUTOLISTEN,
 642                 RPC_C_LISTEN_MAX_CALLS_DEFAULT,
 643                 NULL);
 644             if (status == RPC_S_OK)
 645                 list_add_tail(&registered_interfaces, &rif->entry);
 646             else
 647             {
 648                 ERR("RpcServerRegisterIfEx failed with error %ld\n", status);
 649                 HeapFree(GetProcessHeap(), 0, rif);
 650                 hr = HRESULT_FROM_WIN32(status);
 651             }
 652         }
 653         else
 654             hr = E_OUTOFMEMORY;
 655     }
 656     LeaveCriticalSection(&csRegIf);
 657     return hr;
 658 }
 659
 660 /* stub unregistration */
 661 void RPC_UnregisterInterface(REFIID riid)
 662 {
 663     struct registered_if *rif;
 664     EnterCriticalSection(&csRegIf);
 665     LIST_FOR_EACH_ENTRY(rif, &registered_interfaces, struct registered_if, entry)
 666     {
 667         if (IsEqualGUID(&rif->If.InterfaceId.SyntaxGUID, riid))
 668         {
 669             if (!--rif->refs)
 670             {
 671 #if 0 /* this is a stub in builtin and spams the console with FIXME's */
 672                 IID iid = *riid; /* RpcServerUnregisterIf doesn't take const IID */
 673                 RpcServerUnregisterIf((RPC_IF_HANDLE)&rif->If, &iid, 0);
 674                 list_remove(&rif->entry);
 675                 HeapFree(GetProcessHeap(), 0, rif);
 676 #endif
 677             }
 678             break;
 679         }
 680     }
 681     LeaveCriticalSection(&csRegIf);
 682 }
 683
 684 /* make the apartment reachable by other threads and processes and create the
 685  * IRemUnknown object */
 686 void RPC_StartRemoting(struct apartment *apt)
 687 {
 688     if (!InterlockedExchange(&apt->remoting_started, TRUE))
 689     {
 690         WCHAR endpoint[200];
 691         RPC_STATUS status;
 692
 693         get_rpc_endpoint(endpoint, &apt->oxid);
 694
 695         status = RpcServerUseProtseqEpW(
 696             wszRpcTransport,
 697             RPC_C_PROTSEQ_MAX_REQS_DEFAULT,
 698             endpoint,
 699             NULL);
 700         if (status != RPC_S_OK)
 701             ERR("Couldn't register endpoint %s\n", debugstr_w(endpoint));
 702
 703         /* FIXME: move remote unknown exporting into this function */
 704     }
 705     start_apartment_remote_unknown();
 706 }
 707
 708
 709 static HRESULT create_server(REFCLSID rclsid)
 710 {
 711     static const WCHAR  wszLocalServer32[] = { 'L','o','c','a','l','S','e','r','v','e','r','3','2',0 };
 712     static const WCHAR  embedding[] = { ' ', '-','E','m','b','e','d','d','i','n','g',0 };
 713     HKEY                key;
 714     HRESULT             hres;
 715     WCHAR               command[MAX_PATH+sizeof(embedding)/sizeof(WCHAR)];
 716     DWORD               size = (MAX_PATH+1) * sizeof(WCHAR);
 717     STARTUPINFOW        sinfo;
 718     PROCESS_INFORMATION pinfo;
 719
 720     hres = COM_OpenKeyForCLSID(rclsid, wszLocalServer32, KEY_READ, &key);
 721     if (FAILED(hres)) {
 722         ERR("class %s not registered\n", debugstr_guid(rclsid));
 723         return hres;
 724     }
 725
 726     hres = RegQueryValueExW(key, NULL, NULL, NULL, (LPBYTE)command, &size);
 727     RegCloseKey(key);
 728     if (hres) {
 729         WARN("No default value for LocalServer32 key\n");
 730         return REGDB_E_CLASSNOTREG; /* FIXME: check retval */
 731     }
 732
 733     memset(&sinfo,0,sizeof(sinfo));
 734     sinfo.cb = sizeof(sinfo);
 735
 736     /* EXE servers are started with the -Embedding switch. */
 737
 738     strcatW(command, embedding);
 739
 740     TRACE("activating local server %s for %s\n", debugstr_w(command), debugstr_guid(rclsid));
 741
 742     /* FIXME: Win2003 supports a ServerExecutable value that is passed into
 743      * CreateProcess */
 744     if (!CreateProcessW(NULL, command, NULL, NULL, FALSE, 0, NULL, NULL, &sinfo, &pinfo)) {
 745         WARN("failed to run local server %s\n", debugstr_w(command));
 746         return HRESULT_FROM_WIN32(GetLastError());
 747     }
 748     CloseHandle(pinfo.hProcess);
 749     CloseHandle(pinfo.hThread);
 750
 751     return S_OK;
 752 }
 753
 754 /*
 755  * start_local_service()  - start a service given its name and parameters
 756  */
 757 static DWORD start_local_service(LPCWSTR name, DWORD num, LPCWSTR *params)
 758 {
 759     SC_HANDLE handle, hsvc;
 760     DWORD     r = ERROR_FUNCTION_FAILED;
 761
 762     TRACE("Starting service %s %ld params\n", debugstr_w(name), num);
 763
 764     handle = OpenSCManagerW(NULL, NULL, SC_MANAGER_CONNECT);
 765     if (!handle)
 766         return r;
 767     hsvc = OpenServiceW(handle, name, SERVICE_START);
 768     if (hsvc)
 769     {
 770         if(StartServiceW(hsvc, num, params))
 771             r = ERROR_SUCCESS;
 772         else
 773             r = GetLastError();
 774         if (r == ERROR_SERVICE_ALREADY_RUNNING)
 775             r = ERROR_SUCCESS;
 776         CloseServiceHandle(hsvc);
 777     }
 778     else
 779         r = GetLastError();
 780     CloseServiceHandle(handle);
 781
 782     TRACE("StartService returned error %ld (%s)\n", r, (r == ERROR_SUCCESS) ? "ok":"failed");
 783
 784     return r;
 785 }
 786
 787 /*
 788  * create_local_service()  - start a COM server in a service
 789  *
 790  *   To start a Local Service, we read the AppID value under
 791  * the class's CLSID key, then open the HKCR\\AppId key specified
 792  * there and check for a LocalService value.
 793  *
 794  * Note:  Local Services are not supported under Windows 9x
 795  */
 796 static HRESULT create_local_service(REFCLSID rclsid)
 797 {
 798     HRESULT hres;
 799     WCHAR buf[CHARS_IN_GUID];
 800     static const WCHAR szLocalService[] = { 'L','o','c','a','l','S','e','r','v','i','c','e',0 };
 801     static const WCHAR szServiceParams[] = {'S','e','r','v','i','c','e','P','a','r','a','m','s',0};
 802     HKEY hkey;
 803     LONG r;
 804     DWORD type, sz;
 805
 806     TRACE("Attempting to start Local service for %s\n", debugstr_guid(rclsid));
 807
 808     hres = COM_OpenKeyForAppIdFromCLSID(rclsid, KEY_READ, &hkey);
 809     if (FAILED(hres))
 810         return hres;
 811
 812     /* read the LocalService and ServiceParameters values from the AppID key */
 813     sz = sizeof buf;
 814     r = RegQueryValueExW(hkey, szLocalService, NULL, &type, (LPBYTE)buf, &sz);
 815     if (r==ERROR_SUCCESS && type==REG_SZ)
 816     {
 817         DWORD num_args = 0;
 818         LPWSTR args[1] = { NULL };
 819
 820         /*
 821          * FIXME: I'm not really sure how to deal with the service parameters.
 822          *        I suspect that the string returned from RegQueryValueExW
 823          *        should be split into a number of arguments by spaces.
 824          *        It would make more sense if ServiceParams contained a
 825          *        REG_MULTI_SZ here, but it's a REG_SZ for the services
 826          *        that I'm interested in for the moment.
 827          */
 828         r = RegQueryValueExW(hkey, szServiceParams, NULL, &type, NULL, &sz);
 829         if (r == ERROR_SUCCESS && type == REG_SZ && sz)
 830         {
 831             args[0] = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sz);
 832             num_args++;
 833             RegQueryValueExW(hkey, szServiceParams, NULL, &type, (LPBYTE)args[0], &sz);
 834         }
 835         r = start_local_service(buf, num_args, (LPCWSTR *)args);
 836         if (r != ERROR_SUCCESS)
 837             hres = REGDB_E_CLASSNOTREG; /* FIXME: check retval */
 838         HeapFree(GetProcessHeap(),0,args[0]);
 839     }
 840     else
 841     {
 842         WARN("No LocalService value\n");
 843         hres = REGDB_E_CLASSNOTREG; /* FIXME: check retval */
 844     }
 845     RegCloseKey(hkey);
 846
 847     return hres;
 848 }
 849
 850
 851 static void get_localserver_pipe_name(WCHAR *pipefn, REFCLSID rclsid)
 852 {
 853     static const WCHAR wszPipeRef[] = {'\\','\\','.','\\','p','i','p','e','\\',0};
 854     strcpyW(pipefn, wszPipeRef);
 855     StringFromGUID2(rclsid, pipefn + sizeof(wszPipeRef)/sizeof(wszPipeRef[0]) - 1, CHARS_IN_GUID);
 856 }
 857
 858 /* FIXME: should call to rpcss instead */
 859 HRESULT RPC_GetLocalClassObject(REFCLSID rclsid, REFIID iid, LPVOID *ppv)
 860 {
 861     HRESULT        hres;
 862     HANDLE         hPipe;
 863     WCHAR          pipefn[100];
 864     DWORD          res, bufferlen;
 865     char           marshalbuffer[200];
 866     IStream       *pStm;
 867     LARGE_INTEGER  seekto;
 868     ULARGE_INTEGER newpos;
 869     int            tries = 0;
 870
 871     static const int MAXTRIES = 30; /* 30 seconds */
 872
 873     TRACE("rclsid=%s, iid=%s\n", debugstr_guid(rclsid), debugstr_guid(iid));
 874
 875     get_localserver_pipe_name(pipefn, rclsid);
 876
 877     while (tries++ < MAXTRIES) {
 878         TRACE("waiting for %s\n", debugstr_w(pipefn));
 879
 880         WaitNamedPipeW( pipefn, NMPWAIT_WAIT_FOREVER );
 881         hPipe = CreateFileW(pipefn, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, 0);
 882         if (hPipe == INVALID_HANDLE_VALUE) {
 883             if (tries == 1) {
 884                 if ( (hres = create_local_service(rclsid)) &&
 885                      (hres = create_server(rclsid)) )
 886                     return hres;
 887                 Sleep(1000);
 888             } else {
 889                 WARN("Connecting to %s, no response yet, retrying: le is %lx\n", debugstr_w(pipefn), GetLastError());
 890                 Sleep(1000);
 891             }
 892             continue;
 893         }
 894         bufferlen = 0;
 895         if (!ReadFile(hPipe,marshalbuffer,sizeof(marshalbuffer),&bufferlen,NULL)) {
 896             FIXME("Failed to read marshal id from classfactory of %s.\n",debugstr_guid(rclsid));
 897             Sleep(1000);
 898             continue;
 899         }
 900         TRACE("read marshal id from pipe\n");
 901         CloseHandle(hPipe);
 902         break;
 903     }
 904
 905     if (tries >= MAXTRIES)
 906         return E_NOINTERFACE;
 907
 908     hres = CreateStreamOnHGlobal(0,TRUE,&pStm);
 909     if (hres) return hres;
 910     hres = IStream_Write(pStm,marshalbuffer,bufferlen,&res);
 911     if (hres) goto out;
 912     seekto.u.LowPart = 0;seekto.u.HighPart = 0;
 913     hres = IStream_Seek(pStm,seekto,SEEK_SET,&newpos);
 914
 915     TRACE("unmarshalling classfactory\n");
 916     hres = CoUnmarshalInterface(pStm,&IID_IClassFactory,ppv);
 917 out:
 918     IStream_Release(pStm);
 919     return hres;
 920 }
 921
 922
 923 struct local_server_params
 924 {
 925     CLSID clsid;
 926     IStream *stream;
 927     HANDLE ready_event;
 928 };
 929
 930 /* FIXME: should call to rpcss instead */
 931 static DWORD WINAPI local_server_thread(LPVOID param)
 932 {
 933     struct local_server_params * lsp = (struct local_server_params *)param;
 934     HANDLE              hPipe;
 935     WCHAR               pipefn[100];
 936     HRESULT             hres;
 937     IStream             *pStm = lsp->stream;
 938     STATSTG             ststg;
 939     unsigned char       *buffer;
 940     int                 buflen;
 941     LARGE_INTEGER       seekto;
 942     ULARGE_INTEGER      newpos;
 943     ULONG               res;
 944
 945     TRACE("Starting threader for %s.\n",debugstr_guid(&lsp->clsid));
 946
 947     get_localserver_pipe_name(pipefn, &lsp->clsid);
 948
 949     hPipe = CreateNamedPipeW( pipefn, PIPE_ACCESS_DUPLEX,
 950                               PIPE_TYPE_BYTE|PIPE_WAIT, PIPE_UNLIMITED_INSTANCES,
 951                               4096, 4096, 500 /* 0.5 second timeout */, NULL );
 952
 953     SetEvent(lsp->ready_event);
 954
 955     HeapFree(GetProcessHeap(), 0, lsp);
 956
 957     if (hPipe == INVALID_HANDLE_VALUE)
 958     {
 959         FIXME("pipe creation failed for %s, le is %ld\n", debugstr_w(pipefn), GetLastError());
 960         return 1;
 961     }
 962
 963     while (1) {
 964         if (!ConnectNamedPipe(hPipe,NULL) && GetLastError() != ERROR_PIPE_CONNECTED) {
 965             ERR("Failure during ConnectNamedPipe %ld, ABORT!\n",GetLastError());
 966             break;
 967         }
 968
 969         TRACE("marshalling IClassFactory to client\n");
 970
 971         hres = IStream_Stat(pStm,&ststg,0);
 972         if (hres) return hres;
 973
 974         seekto.u.LowPart = 0;
 975         seekto.u.HighPart = 0;
 976         hres = IStream_Seek(pStm,seekto,SEEK_SET,&newpos);
 977         if (hres) {
 978             FIXME("IStream_Seek failed, %lx\n",hres);
 979             return hres;
 980         }
 981
 982         buflen = ststg.cbSize.u.LowPart;
 983         buffer = HeapAlloc(GetProcessHeap(),0,buflen);
 984
 985         hres = IStream_Read(pStm,buffer,buflen,&res);
 986         if (hres) {
 987             FIXME("Stream Read failed, %lx\n",hres);
 988             HeapFree(GetProcessHeap(),0,buffer);
 989             return hres;
 990         }
 991
 992         WriteFile(hPipe,buffer,buflen,&res,NULL);
 993         HeapFree(GetProcessHeap(),0,buffer);
 994
 995         FlushFileBuffers(hPipe);
 996         DisconnectNamedPipe(hPipe);
 997
 998         TRACE("done marshalling IClassFactory\n");
 999     }
1000     CloseHandle(hPipe);
1001     IStream_Release(pStm);
1002     return 0;
1003 }
1004
1005 void RPC_StartLocalServer(REFCLSID clsid, IStream *stream)
1006 {
1007     DWORD tid;
1008     HANDLE thread, ready_event;
1009     struct local_server_params *lsp = HeapAlloc(GetProcessHeap(), 0, sizeof(*lsp));
1010
1011     lsp->clsid = *clsid;
1012     lsp->stream = stream;
1013     IStream_AddRef(stream);
1014     lsp->ready_event = ready_event = CreateEventW(NULL, FALSE, FALSE, NULL);
1015
1016     thread = CreateThread(NULL, 0, local_server_thread, lsp, 0, &tid);
1017     CloseHandle(thread);
1018     /* FIXME: failure handling */
1019
1020     WaitForSingleObject(ready_event, INFINITE);
1021     CloseHandle(ready_event);
1022 }