git.oblomov.eu Git - wine/blob - 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 <stdarg.h>
  27 #include <string.h>
  28
  29 #define COBJMACROS
  30 #define NONAMELESSUNION
  31 #define NONAMELESSSTRUCT
  32
  33 #include "windef.h"
  34 #include "winbase.h"
  35 #include "winuser.h"
  36 #include "winsvc.h"
  37 #include "objbase.h"
  38 #include "ole2.h"
  39 #include "rpc.h"
  40 #include "winerror.h"
  41 #include "winreg.h"
  42 #include "wine/unicode.h"
  43
  44 #include "compobj_private.h"
  45
  46 #include "wine/debug.h"
  47
  48 WINE_DEFAULT_DEBUG_CHANNEL(ole);
  49
  50 static void __RPC_STUB dispatch_rpc(RPC_MESSAGE *msg);
  51
  52 /* we only use one function to dispatch calls for all methods - we use the
  53  * RPC_IF_OLE flag to tell the RPC runtime that this is the case */
  54 static RPC_DISPATCH_FUNCTION rpc_dispatch_table[1] = { dispatch_rpc }; /* (RO) */
  55 static RPC_DISPATCH_TABLE rpc_dispatch = { 1, rpc_dispatch_table }; /* (RO) */
  56
  57 static struct list registered_interfaces = LIST_INIT(registered_interfaces); /* (CS csRegIf) */
  58 static CRITICAL_SECTION csRegIf;
  59 static CRITICAL_SECTION_DEBUG csRegIf_debug =
  60 {
  61     0, 0, &csRegIf,
  62     { &csRegIf_debug.ProcessLocksList, &csRegIf_debug.ProcessLocksList },
  63       0, 0, { (DWORD_PTR)(__FILE__ ": dcom registered server interfaces") }
  64 };
  65 static CRITICAL_SECTION csRegIf = { &csRegIf_debug, -1, 0, 0, 0, 0 };
  66
  67 static struct list channel_hooks = LIST_INIT(channel_hooks); /* (CS csChannelHook) */
  68 static CRITICAL_SECTION csChannelHook;
  69 static CRITICAL_SECTION_DEBUG csChannelHook_debug =
  70 {
  71     0, 0, &csChannelHook,
  72     { &csChannelHook_debug.ProcessLocksList, &csChannelHook_debug.ProcessLocksList },
  73       0, 0, { (DWORD_PTR)(__FILE__ ": channel hooks") }
  74 };
  75 static CRITICAL_SECTION csChannelHook = { &csChannelHook_debug, -1, 0, 0, 0, 0 };
  76
  77 static WCHAR wszRpcTransport[] = {'n','c','a','l','r','p','c',0};
  78
  79
  80 struct registered_if
  81 {
  82     struct list entry;
  83     DWORD refs; /* ref count */
  84     RPC_SERVER_INTERFACE If; /* interface registered with the RPC runtime */
  85 };
  86
  87 /* get the pipe endpoint specified of the specified apartment */
  88 static inline void get_rpc_endpoint(LPWSTR endpoint, const OXID *oxid)
  89 {
  90     /* FIXME: should get endpoint from rpcss */
  91     static const WCHAR wszEndpointFormat[] = {'\\','p','i','p','e','\\','O','L','E','_','%','0','8','l','x','%','0','8','l','x',0};
  92     wsprintfW(endpoint, wszEndpointFormat, (DWORD)(*oxid >> 32),(DWORD)*oxid);
  93 }
  94
  95 typedef struct
  96 {
  97     const IRpcChannelBufferVtbl *lpVtbl;
  98     LONG                  refs;
  99 } RpcChannelBuffer;
 100
 101 typedef struct
 102 {
 103     RpcChannelBuffer       super; /* superclass */
 104
 105     RPC_BINDING_HANDLE     bind; /* handle to the remote server */
 106     OXID                   oxid; /* apartment in which the channel is valid */
 107     DWORD                  server_pid; /* id of server process */
 108     DWORD                  dest_context; /* returned from GetDestCtx */
 109     LPVOID                 dest_context_data; /* returned from GetDestCtx */
 110     HANDLE                 event; /* cached event handle */
 111 } ClientRpcChannelBuffer;
 112
 113 struct dispatch_params
 114 {
 115     RPCOLEMESSAGE     *msg; /* message */
 116     IRpcStubBuffer    *stub; /* stub buffer, if applicable */
 117     IRpcChannelBuffer *chan; /* server channel buffer, if applicable */
 118     IID                iid; /* ID of interface being called */
 119     IUnknown          *iface; /* interface being called */
 120     HANDLE             handle; /* handle that will become signaled when call finishes */
 121     BOOL               bypass_rpcrt; /* bypass RPC runtime? */
 122     RPC_STATUS         status; /* status (out) */
 123     HRESULT            hr; /* hresult (out) */
 124 };
 125
 126 struct message_state
 127 {
 128     RPC_BINDING_HANDLE binding_handle;
 129     ULONG prefix_data_len;
 130     SChannelHookCallInfo channel_hook_info;
 131     BOOL bypass_rpcrt;
 132
 133     /* client only */
 134     HWND target_hwnd;
 135     DWORD target_tid;
 136     struct dispatch_params params;
 137 };
 138
 139 typedef struct
 140 {
 141     ULONG conformance; /* NDR */
 142     GUID id;
 143     ULONG size;
 144     /* [size_is((size+7)&~7)] */ unsigned char data[1];
 145 } WIRE_ORPC_EXTENT;
 146
 147 struct channel_hook_entry
 148 {
 149     struct list entry;
 150     GUID id;
 151     IChannelHook *hook;
 152 };
 153
 154 struct channel_hook_buffer_data
 155 {
 156     GUID id;
 157     ULONG extension_size;
 158 };
 159
 160
 161 static HRESULT unmarshal_ORPCTHAT(RPC_MESSAGE *msg, ORPCTHAT *orpcthat,
 162                                   ORPC_EXTENT_ARRAY *orpc_ext_array, WIRE_ORPC_EXTENT **first_wire_orpc_extent);
 163
 164 /* Channel Hook Functions */
 165
 166 static ULONG ChannelHooks_ClientGetSize(SChannelHookCallInfo *info,
 167     struct channel_hook_buffer_data **data, unsigned int *hook_count,
 168     ULONG *extension_count)
 169 {
 170     struct channel_hook_entry *entry;
 171     ULONG total_size = 0;
 172     unsigned int hook_index = 0;
 173
 174     *hook_count = 0;
 175     *extension_count = 0;
 176
 177     EnterCriticalSection(&csChannelHook);
 178
 179     LIST_FOR_EACH_ENTRY(entry, &channel_hooks, struct channel_hook_entry, entry)
 180         (*hook_count)++;
 181
 182     if (*hook_count)
 183         *data = HeapAlloc(GetProcessHeap(), 0, *hook_count * sizeof(struct channel_hook_buffer_data));
 184     else
 185         *data = NULL;
 186
 187     LIST_FOR_EACH_ENTRY(entry, &channel_hooks, struct channel_hook_entry, entry)
 188     {
 189         ULONG extension_size = 0;
 190
 191         IChannelHook_ClientGetSize(entry->hook, &entry->id, &info->iid, &extension_size);
 192
 193         TRACE("%s: extension_size = %u\n", debugstr_guid(&entry->id), extension_size);
 194
 195         extension_size = (extension_size+7)&~7;
 196         (*data)[hook_index].id = entry->id;
 197         (*data)[hook_index].extension_size = extension_size;
 198
 199         /* an extension is only put onto the wire if it has data to write */
 200         if (extension_size)
 201         {
 202             total_size += FIELD_OFFSET(WIRE_ORPC_EXTENT, data[extension_size]);
 203             (*extension_count)++;
 204         }
 205
 206         hook_index++;
 207     }
 208
 209     LeaveCriticalSection(&csChannelHook);
 210
 211     return total_size;
 212 }
 213
 214 static unsigned char * ChannelHooks_ClientFillBuffer(SChannelHookCallInfo *info,
 215     unsigned char *buffer, struct channel_hook_buffer_data *data,
 216     unsigned int hook_count)
 217 {
 218     struct channel_hook_entry *entry;
 219
 220     EnterCriticalSection(&csChannelHook);
 221
 222     LIST_FOR_EACH_ENTRY(entry, &channel_hooks, struct channel_hook_entry, entry)
 223     {
 224         unsigned int i;
 225         ULONG extension_size = 0;
 226         WIRE_ORPC_EXTENT *wire_orpc_extent = (WIRE_ORPC_EXTENT *)buffer;
 227
 228         for (i = 0; i < hook_count; i++)
 229             if (IsEqualGUID(&entry->id, &data[i].id))
 230                 extension_size = data[i].extension_size;
 231
 232         /* an extension is only put onto the wire if it has data to write */
 233         if (!extension_size)
 234             continue;
 235
 236         IChannelHook_ClientFillBuffer(entry->hook, &entry->id, &info->iid,
 237             &extension_size, buffer + FIELD_OFFSET(WIRE_ORPC_EXTENT, data[0]));
 238
 239         TRACE("%s: extension_size = %u\n", debugstr_guid(&entry->id), extension_size);
 240
 241         /* FIXME: set unused portion of wire_orpc_extent->data to 0? */
 242
 243         wire_orpc_extent->conformance = (extension_size+7)&~7;
 244         wire_orpc_extent->size = extension_size;
 245         wire_orpc_extent->id = entry->id;
 246         buffer += FIELD_OFFSET(WIRE_ORPC_EXTENT, data[wire_orpc_extent->conformance]);
 247     }
 248
 249     LeaveCriticalSection(&csChannelHook);
 250
 251     return buffer;
 252 }
 253
 254 static void ChannelHooks_ServerNotify(SChannelHookCallInfo *info,
 255     DWORD lDataRep, WIRE_ORPC_EXTENT *first_wire_orpc_extent,
 256     ULONG extension_count)
 257 {
 258     struct channel_hook_entry *entry;
 259     ULONG i;
 260
 261     EnterCriticalSection(&csChannelHook);
 262
 263     LIST_FOR_EACH_ENTRY(entry, &channel_hooks, struct channel_hook_entry, entry)
 264     {
 265         WIRE_ORPC_EXTENT *wire_orpc_extent;
 266         for (i = 0, wire_orpc_extent = first_wire_orpc_extent;
 267              i < extension_count;
 268              i++, wire_orpc_extent = (WIRE_ORPC_EXTENT *)&wire_orpc_extent->data[wire_orpc_extent->conformance])
 269         {
 270             if (IsEqualGUID(&entry->id, &wire_orpc_extent->id))
 271                 break;
 272         }
 273         if (i == extension_count) wire_orpc_extent = NULL;
 274
 275         IChannelHook_ServerNotify(entry->hook, &entry->id, &info->iid,
 276             wire_orpc_extent ? wire_orpc_extent->size : 0,
 277             wire_orpc_extent ? wire_orpc_extent->data : NULL,
 278             lDataRep);
 279     }
 280
 281     LeaveCriticalSection(&csChannelHook);
 282 }
 283
 284 static ULONG ChannelHooks_ServerGetSize(SChannelHookCallInfo *info,
 285                                         struct channel_hook_buffer_data **data, unsigned int *hook_count,
 286                                         ULONG *extension_count)
 287 {
 288     struct channel_hook_entry *entry;
 289     ULONG total_size = 0;
 290     unsigned int hook_index = 0;
 291
 292     *hook_count = 0;
 293     *extension_count = 0;
 294
 295     EnterCriticalSection(&csChannelHook);
 296
 297     LIST_FOR_EACH_ENTRY(entry, &channel_hooks, struct channel_hook_entry, entry)
 298         (*hook_count)++;
 299
 300     if (*hook_count)
 301         *data = HeapAlloc(GetProcessHeap(), 0, *hook_count * sizeof(struct channel_hook_buffer_data));
 302     else
 303         *data = NULL;
 304
 305     LIST_FOR_EACH_ENTRY(entry, &channel_hooks, struct channel_hook_entry, entry)
 306     {
 307         ULONG extension_size = 0;
 308
 309         IChannelHook_ServerGetSize(entry->hook, &entry->id, &info->iid, S_OK,
 310                                    &extension_size);
 311
 312         TRACE("%s: extension_size = %u\n", debugstr_guid(&entry->id), extension_size);
 313
 314         extension_size = (extension_size+7)&~7;
 315         (*data)[hook_index].id = entry->id;
 316         (*data)[hook_index].extension_size = extension_size;
 317
 318         /* an extension is only put onto the wire if it has data to write */
 319         if (extension_size)
 320         {
 321             total_size += FIELD_OFFSET(WIRE_ORPC_EXTENT, data[extension_size]);
 322             (*extension_count)++;
 323         }
 324
 325         hook_index++;
 326     }
 327
 328     LeaveCriticalSection(&csChannelHook);
 329
 330     return total_size;
 331 }
 332
 333 static unsigned char * ChannelHooks_ServerFillBuffer(SChannelHookCallInfo *info,
 334                                                      unsigned char *buffer, struct channel_hook_buffer_data *data,
 335                                                      unsigned int hook_count)
 336 {
 337     struct channel_hook_entry *entry;
 338
 339     EnterCriticalSection(&csChannelHook);
 340
 341     LIST_FOR_EACH_ENTRY(entry, &channel_hooks, struct channel_hook_entry, entry)
 342     {
 343         unsigned int i;
 344         ULONG extension_size = 0;
 345         WIRE_ORPC_EXTENT *wire_orpc_extent = (WIRE_ORPC_EXTENT *)buffer;
 346
 347         for (i = 0; i < hook_count; i++)
 348             if (IsEqualGUID(&entry->id, &data[i].id))
 349                 extension_size = data[i].extension_size;
 350
 351         /* an extension is only put onto the wire if it has data to write */
 352         if (!extension_size)
 353             continue;
 354
 355         IChannelHook_ServerFillBuffer(entry->hook, &entry->id, &info->iid,
 356                                       &extension_size, buffer + FIELD_OFFSET(WIRE_ORPC_EXTENT, data[0]),
 357                                       S_OK);
 358
 359         TRACE("%s: extension_size = %u\n", debugstr_guid(&entry->id), extension_size);
 360
 361         /* FIXME: set unused portion of wire_orpc_extent->data to 0? */
 362
 363         wire_orpc_extent->conformance = (extension_size+7)&~7;
 364         wire_orpc_extent->size = extension_size;
 365         wire_orpc_extent->id = entry->id;
 366         buffer += FIELD_OFFSET(WIRE_ORPC_EXTENT, data[wire_orpc_extent->conformance]);
 367     }
 368
 369     LeaveCriticalSection(&csChannelHook);
 370
 371     return buffer;
 372 }
 373
 374 static void ChannelHooks_ClientNotify(SChannelHookCallInfo *info,
 375                                       DWORD lDataRep, WIRE_ORPC_EXTENT *first_wire_orpc_extent,
 376                                       ULONG extension_count, HRESULT hrFault)
 377 {
 378     struct channel_hook_entry *entry;
 379     ULONG i;
 380
 381     EnterCriticalSection(&csChannelHook);
 382
 383     LIST_FOR_EACH_ENTRY(entry, &channel_hooks, struct channel_hook_entry, entry)
 384     {
 385         WIRE_ORPC_EXTENT *wire_orpc_extent;
 386         for (i = 0, wire_orpc_extent = first_wire_orpc_extent;
 387              i < extension_count;
 388              i++, wire_orpc_extent = (WIRE_ORPC_EXTENT *)&wire_orpc_extent->data[wire_orpc_extent->conformance])
 389         {
 390             if (IsEqualGUID(&entry->id, &wire_orpc_extent->id))
 391                 break;
 392         }
 393         if (i == extension_count) wire_orpc_extent = NULL;
 394
 395         IChannelHook_ClientNotify(entry->hook, &entry->id, &info->iid,
 396                                   wire_orpc_extent ? wire_orpc_extent->size : 0,
 397                                   wire_orpc_extent ? wire_orpc_extent->data : NULL,
 398                                   lDataRep, hrFault);
 399     }
 400
 401     LeaveCriticalSection(&csChannelHook);
 402 }
 403
 404 HRESULT RPC_RegisterChannelHook(REFGUID rguid, IChannelHook *hook)
 405 {
 406     struct channel_hook_entry *entry;
 407
 408     TRACE("(%s, %p)\n", debugstr_guid(rguid), hook);
 409
 410     entry = HeapAlloc(GetProcessHeap(), 0, sizeof(*entry));
 411     if (!entry)
 412         return E_OUTOFMEMORY;
 413
 414     entry->id = *rguid;
 415     entry->hook = hook;
 416     IChannelHook_AddRef(hook);
 417
 418     EnterCriticalSection(&csChannelHook);
 419     list_add_tail(&channel_hooks, &entry->entry);
 420     LeaveCriticalSection(&csChannelHook);
 421
 422     return S_OK;
 423 }
 424
 425 void RPC_UnregisterAllChannelHooks(void)
 426 {
 427     struct channel_hook_entry *cursor;
 428     struct channel_hook_entry *cursor2;
 429
 430     EnterCriticalSection(&csChannelHook);
 431     LIST_FOR_EACH_ENTRY_SAFE(cursor, cursor2, &channel_hooks, struct channel_hook_entry, entry)
 432         HeapFree(GetProcessHeap(), 0, cursor);
 433     LeaveCriticalSection(&csChannelHook);
 434 }
 435
 436 /* RPC Channel Buffer Functions */
 437
 438 static HRESULT WINAPI RpcChannelBuffer_QueryInterface(LPRPCCHANNELBUFFER iface, REFIID riid, LPVOID *ppv)
 439 {
 440     *ppv = NULL;
 441     if (IsEqualIID(riid,&IID_IRpcChannelBuffer) || IsEqualIID(riid,&IID_IUnknown))
 442     {
 443         *ppv = iface;
 444         IUnknown_AddRef(iface);
 445         return S_OK;
 446     }
 447     return E_NOINTERFACE;
 448 }
 449
 450 static ULONG WINAPI RpcChannelBuffer_AddRef(LPRPCCHANNELBUFFER iface)
 451 {
 452     RpcChannelBuffer *This = (RpcChannelBuffer *)iface;
 453     return InterlockedIncrement(&This->refs);
 454 }
 455
 456 static ULONG WINAPI ServerRpcChannelBuffer_Release(LPRPCCHANNELBUFFER iface)
 457 {
 458     RpcChannelBuffer *This = (RpcChannelBuffer *)iface;
 459     ULONG ref;
 460
 461     ref = InterlockedDecrement(&This->refs);
 462     if (ref)
 463         return ref;
 464
 465     HeapFree(GetProcessHeap(), 0, This);
 466     return 0;
 467 }
 468
 469 static ULONG WINAPI ClientRpcChannelBuffer_Release(LPRPCCHANNELBUFFER iface)
 470 {
 471     ClientRpcChannelBuffer *This = (ClientRpcChannelBuffer *)iface;
 472     ULONG ref;
 473
 474     ref = InterlockedDecrement(&This->super.refs);
 475     if (ref)
 476         return ref;
 477
 478     if (This->event) CloseHandle(This->event);
 479     RpcBindingFree(&This->bind);
 480     HeapFree(GetProcessHeap(), 0, This);
 481     return 0;
 482 }
 483
 484 static HRESULT WINAPI ServerRpcChannelBuffer_GetBuffer(LPRPCCHANNELBUFFER iface, RPCOLEMESSAGE* olemsg, REFIID riid)
 485 {
 486     RpcChannelBuffer *This = (RpcChannelBuffer *)iface;
 487     RPC_MESSAGE *msg = (RPC_MESSAGE *)olemsg;
 488     RPC_STATUS status;
 489     ORPCTHAT *orpcthat;
 490     struct message_state *message_state;
 491     ULONG extensions_size;
 492     struct channel_hook_buffer_data *channel_hook_data;
 493     unsigned int channel_hook_count;
 494     ULONG extension_count;
 495
 496     TRACE("(%p)->(%p,%s)\n", This, olemsg, debugstr_guid(riid));
 497
 498     message_state = msg->Handle;
 499     /* restore the binding handle and the real start of data */
 500     msg->Handle = message_state->binding_handle;
 501     msg->Buffer = (char *)msg->Buffer - message_state->prefix_data_len;
 502
 503     extensions_size = ChannelHooks_ServerGetSize(&message_state->channel_hook_info,
 504                                                  &channel_hook_data, &channel_hook_count, &extension_count);
 505
 506     msg->BufferLength += FIELD_OFFSET(ORPCTHAT, extensions) + 4;
 507     if (extensions_size)
 508     {
 509         msg->BufferLength += FIELD_OFFSET(ORPC_EXTENT_ARRAY, extent) + 2*sizeof(DWORD) + extensions_size;
 510         if (extension_count & 1)
 511             msg->BufferLength += FIELD_OFFSET(WIRE_ORPC_EXTENT, data[0]);
 512     }
 513
 514     if (message_state->bypass_rpcrt)
 515     {
 516         msg->Buffer = HeapAlloc(GetProcessHeap(), 0, msg->BufferLength);
 517         if (msg->Buffer)
 518             status = RPC_S_OK;
 519         else
 520             status = ERROR_OUTOFMEMORY;
 521     }
 522     else
 523         status = I_RpcGetBuffer(msg);
 524
 525     orpcthat = msg->Buffer;
 526     msg->Buffer = (char *)msg->Buffer + FIELD_OFFSET(ORPCTHAT, extensions);
 527
 528     orpcthat->flags = ORPCF_NULL /* FIXME? */;
 529
 530     /* NDR representation of orpcthat->extensions */
 531     *(DWORD *)msg->Buffer = extensions_size ? 1 : 0;
 532     msg->Buffer = (char *)msg->Buffer + sizeof(DWORD);
 533
 534     if (extensions_size)
 535     {
 536         ORPC_EXTENT_ARRAY *orpc_extent_array = msg->Buffer;
 537         orpc_extent_array->size = extension_count;
 538         orpc_extent_array->reserved = 0;
 539         msg->Buffer = (char *)msg->Buffer + FIELD_OFFSET(ORPC_EXTENT_ARRAY, extent);
 540         /* NDR representation of orpc_extent_array->extent */
 541         *(DWORD *)msg->Buffer = 1;
 542         msg->Buffer = (char *)msg->Buffer + sizeof(DWORD);
 543         /* NDR representation of [size_is] attribute of orpc_extent_array->extent */
 544         *(DWORD *)msg->Buffer = (extension_count + 1) & ~1;
 545         msg->Buffer = (char *)msg->Buffer + sizeof(DWORD);
 546
 547         msg->Buffer = ChannelHooks_ServerFillBuffer(&message_state->channel_hook_info,
 548                                                     msg->Buffer, channel_hook_data, channel_hook_count);
 549
 550         /* we must add a dummy extension if there is an odd extension
 551          * count to meet the contract specified by the size_is attribute */
 552         if (extension_count & 1)
 553         {
 554             WIRE_ORPC_EXTENT *wire_orpc_extent = msg->Buffer;
 555             wire_orpc_extent->conformance = 0;
 556             wire_orpc_extent->id = GUID_NULL;
 557             wire_orpc_extent->size = 0;
 558             msg->Buffer = (char *)msg->Buffer + FIELD_OFFSET(WIRE_ORPC_EXTENT, data[0]);
 559         }
 560     }
 561
 562     HeapFree(GetProcessHeap(), 0, channel_hook_data);
 563
 564     /* store the prefixed data length so that we can restore the real buffer
 565      * later */
 566     message_state->prefix_data_len = (char *)msg->Buffer - (char *)orpcthat;
 567     msg->BufferLength -= message_state->prefix_data_len;
 568     /* save away the message state again */
 569     msg->Handle = message_state;
 570
 571     TRACE("-- %d\n", status);
 572
 573     return HRESULT_FROM_WIN32(status);
 574 }
 575
 576 static HANDLE ClientRpcChannelBuffer_GetEventHandle(ClientRpcChannelBuffer *This)
 577 {
 578     HANDLE event = InterlockedExchangePointer(&This->event, NULL);
 579
 580     /* Note: must be auto-reset event so we can reuse it without a call
 581     * to ResetEvent */
 582     if (!event) event = CreateEventW(NULL, FALSE, FALSE, NULL);
 583
 584     return event;
 585 }
 586
 587 static void ClientRpcChannelBuffer_ReleaseEventHandle(ClientRpcChannelBuffer *This, HANDLE event)
 588 {
 589     if (InterlockedCompareExchangePointer(&This->event, event, NULL))
 590         /* already a handle cached in This */
 591         CloseHandle(event);
 592 }
 593
 594 static HRESULT WINAPI ClientRpcChannelBuffer_GetBuffer(LPRPCCHANNELBUFFER iface, RPCOLEMESSAGE* olemsg, REFIID riid)
 595 {
 596     ClientRpcChannelBuffer *This = (ClientRpcChannelBuffer *)iface;
 597     RPC_MESSAGE *msg = (RPC_MESSAGE *)olemsg;
 598     RPC_CLIENT_INTERFACE *cif;
 599     RPC_STATUS status;
 600     ORPCTHIS *orpcthis;
 601     struct message_state *message_state;
 602     ULONG extensions_size;
 603     struct channel_hook_buffer_data *channel_hook_data;
 604     unsigned int channel_hook_count;
 605     ULONG extension_count;
 606     IPID ipid;
 607     HRESULT hr;
 608     APARTMENT *apt = NULL;
 609
 610     TRACE("(%p)->(%p,%s)\n", This, olemsg, debugstr_guid(riid));
 611
 612     cif = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(RPC_CLIENT_INTERFACE));
 613     if (!cif)
 614         return E_OUTOFMEMORY;
 615
 616     message_state = HeapAlloc(GetProcessHeap(), 0, sizeof(*message_state));
 617     if (!message_state)
 618     {
 619         HeapFree(GetProcessHeap(), 0, cif);
 620         return E_OUTOFMEMORY;
 621     }
 622
 623     cif->Length = sizeof(RPC_CLIENT_INTERFACE);
 624     /* RPC interface ID = COM interface ID */
 625     cif->InterfaceId.SyntaxGUID = *riid;
 626     /* COM objects always have a version of 0.0 */
 627     cif->InterfaceId.SyntaxVersion.MajorVersion = 0;
 628     cif->InterfaceId.SyntaxVersion.MinorVersion = 0;
 629     msg->Handle = This->bind;
 630     msg->RpcInterfaceInformation = cif;
 631
 632     message_state->prefix_data_len = 0;
 633     message_state->binding_handle = This->bind;
 634
 635     message_state->channel_hook_info.iid = *riid;
 636     message_state->channel_hook_info.cbSize = sizeof(message_state->channel_hook_info);
 637     message_state->channel_hook_info.uCausality = COM_CurrentCausalityId();
 638     message_state->channel_hook_info.dwServerPid = This->server_pid;
 639     message_state->channel_hook_info.iMethod = msg->ProcNum;
 640     message_state->channel_hook_info.pObject = NULL; /* only present on server-side */
 641     message_state->target_hwnd = NULL;
 642     message_state->target_tid = 0;
 643     memset(&message_state->params, 0, sizeof(message_state->params));
 644
 645     extensions_size = ChannelHooks_ClientGetSize(&message_state->channel_hook_info,
 646         &channel_hook_data, &channel_hook_count, &extension_count);
 647
 648     msg->BufferLength += FIELD_OFFSET(ORPCTHIS, extensions) + 4;
 649     if (extensions_size)
 650     {
 651         msg->BufferLength += FIELD_OFFSET(ORPC_EXTENT_ARRAY, extent) + 2*sizeof(DWORD) + extensions_size;
 652         if (extension_count & 1)
 653             msg->BufferLength += FIELD_OFFSET(WIRE_ORPC_EXTENT, data[0]);
 654     }
 655
 656     RpcBindingInqObject(message_state->binding_handle, &ipid);
 657     hr = ipid_get_dispatch_params(&ipid, &apt, &message_state->params.stub,
 658                                   &message_state->params.chan,
 659                                   &message_state->params.iid,
 660                                   &message_state->params.iface);
 661     if (hr == S_OK)
 662     {
 663         /* stub, chan, iface and iid are unneeded in multi-threaded case as we go
 664          * via the RPC runtime */
 665         if (apt->multi_threaded)
 666         {
 667             IRpcStubBuffer_Release(message_state->params.stub);
 668             message_state->params.stub = NULL;
 669             IRpcChannelBuffer_Release(message_state->params.chan);
 670             message_state->params.chan = NULL;
 671             message_state->params.iface = NULL;
 672         }
 673         else
 674         {
 675             message_state->params.bypass_rpcrt = TRUE;
 676             message_state->target_hwnd = apartment_getwindow(apt);
 677             message_state->target_tid = apt->tid;
 678             /* we assume later on that this being non-NULL is the indicator that
 679              * means call directly instead of going through RPC runtime */
 680             if (!message_state->target_hwnd)
 681                 ERR("window for apartment %s is NULL\n", wine_dbgstr_longlong(apt->oxid));
 682         }
 683     }
 684     if (apt) apartment_release(apt);
 685     message_state->params.handle = ClientRpcChannelBuffer_GetEventHandle(This);
 686     /* Note: message_state->params.msg is initialised in
 687      * ClientRpcChannelBuffer_SendReceive */
 688
 689     /* shortcut the RPC runtime */
 690     if (message_state->target_hwnd)
 691     {
 692         msg->Buffer = HeapAlloc(GetProcessHeap(), 0, msg->BufferLength);
 693         if (msg->Buffer)
 694             status = RPC_S_OK;
 695         else
 696             status = ERROR_OUTOFMEMORY;
 697     }
 698     else
 699         status = I_RpcGetBuffer(msg);
 700
 701     msg->Handle = message_state;
 702
 703     if (status == RPC_S_OK)
 704     {
 705         orpcthis = msg->Buffer;
 706         msg->Buffer = (char *)msg->Buffer + FIELD_OFFSET(ORPCTHIS, extensions);
 707
 708         orpcthis->version.MajorVersion = COM_MAJOR_VERSION;
 709         orpcthis->version.MinorVersion = COM_MINOR_VERSION;
 710         orpcthis->flags = message_state->channel_hook_info.dwServerPid ? ORPCF_LOCAL : ORPCF_NULL;
 711         orpcthis->reserved1 = 0;
 712         orpcthis->cid = message_state->channel_hook_info.uCausality;
 713
 714         /* NDR representation of orpcthis->extensions */
 715         *(DWORD *)msg->Buffer = extensions_size ? 1 : 0;
 716         msg->Buffer = (char *)msg->Buffer + sizeof(DWORD);
 717
 718         if (extensions_size)
 719         {
 720             ORPC_EXTENT_ARRAY *orpc_extent_array = msg->Buffer;
 721             orpc_extent_array->size = extension_count;
 722             orpc_extent_array->reserved = 0;
 723             msg->Buffer = (char *)msg->Buffer + FIELD_OFFSET(ORPC_EXTENT_ARRAY, extent);
 724             /* NDR representation of orpc_extent_array->extent */
 725             *(DWORD *)msg->Buffer = 1;
 726             msg->Buffer = (char *)msg->Buffer + sizeof(DWORD);
 727             /* NDR representation of [size_is] attribute of orpc_extent_array->extent */
 728             *(DWORD *)msg->Buffer = (extension_count + 1) & ~1;
 729             msg->Buffer = (char *)msg->Buffer + sizeof(DWORD);
 730
 731             msg->Buffer = ChannelHooks_ClientFillBuffer(&message_state->channel_hook_info,
 732                 msg->Buffer, channel_hook_data, channel_hook_count);
 733
 734             /* we must add a dummy extension if there is an odd extension
 735              * count to meet the contract specified by the size_is attribute */
 736             if (extension_count & 1)
 737             {
 738                 WIRE_ORPC_EXTENT *wire_orpc_extent = msg->Buffer;
 739                 wire_orpc_extent->conformance = 0;
 740                 wire_orpc_extent->id = GUID_NULL;
 741                 wire_orpc_extent->size = 0;
 742                 msg->Buffer = (char *)msg->Buffer + FIELD_OFFSET(WIRE_ORPC_EXTENT, data[0]);
 743             }
 744         }
 745
 746         /* store the prefixed data length so that we can restore the real buffer
 747          * pointer in ClientRpcChannelBuffer_SendReceive. */
 748         message_state->prefix_data_len = (char *)msg->Buffer - (char *)orpcthis;
 749         msg->BufferLength -= message_state->prefix_data_len;
 750     }
 751
 752     HeapFree(GetProcessHeap(), 0, channel_hook_data);
 753
 754     TRACE("-- %d\n", status);
 755
 756     return HRESULT_FROM_WIN32(status);
 757 }
 758
 759 static HRESULT WINAPI ServerRpcChannelBuffer_SendReceive(LPRPCCHANNELBUFFER iface, RPCOLEMESSAGE *olemsg, ULONG *pstatus)
 760 {
 761     FIXME("stub\n");
 762     return E_NOTIMPL;
 763 }
 764
 765 /* this thread runs an outgoing RPC */
 766 static DWORD WINAPI rpc_sendreceive_thread(LPVOID param)
 767 {
 768     struct dispatch_params *data = param;
 769
 770     /* Note: I_RpcSendReceive doesn't raise exceptions like the higher-level
 771      * RPC functions do */
 772     data->status = I_RpcSendReceive((RPC_MESSAGE *)data->msg);
 773
 774     TRACE("completed with status 0x%x\n", data->status);
 775
 776     SetEvent(data->handle);
 777
 778     return 0;
 779 }
 780
 781 static inline HRESULT ClientRpcChannelBuffer_IsCorrectApartment(ClientRpcChannelBuffer *This, APARTMENT *apt)
 782 {
 783     OXID oxid;
 784     if (!apt)
 785         return S_FALSE;
 786     if (apartment_getoxid(apt, &oxid) != S_OK)
 787         return S_FALSE;
 788     if (This->oxid != oxid)
 789         return S_FALSE;
 790     return S_OK;
 791 }
 792
 793 static HRESULT WINAPI ClientRpcChannelBuffer_SendReceive(LPRPCCHANNELBUFFER iface, RPCOLEMESSAGE *olemsg, ULONG *pstatus)
 794 {
 795     ClientRpcChannelBuffer *This = (ClientRpcChannelBuffer *)iface;
 796     HRESULT hr;
 797     RPC_MESSAGE *msg = (RPC_MESSAGE *)olemsg;
 798     RPC_STATUS status;
 799     DWORD index;
 800     struct message_state *message_state;
 801     ORPCTHAT orpcthat;
 802     ORPC_EXTENT_ARRAY orpc_ext_array;
 803     WIRE_ORPC_EXTENT *first_wire_orpc_extent = NULL;
 804     HRESULT hrFault = S_OK;
 805
 806     TRACE("(%p) iMethod=%d\n", olemsg, olemsg->iMethod);
 807
 808     hr = ClientRpcChannelBuffer_IsCorrectApartment(This, COM_CurrentApt());
 809     if (hr != S_OK)
 810     {
 811         ERR("called from wrong apartment, should have been 0x%s\n",
 812             wine_dbgstr_longlong(This->oxid));
 813         return RPC_E_WRONG_THREAD;
 814     }
 815     /* This situation should be impossible in multi-threaded apartments,
 816      * because the calling thread isn't re-enterable.
 817      * Note: doing a COM call during the processing of a sent message is
 818      * only disallowed if a client call is already being waited for
 819      * completion */
 820     if (!COM_CurrentApt()->multi_threaded &&
 821         COM_CurrentInfo()->pending_call_count_client &&
 822         InSendMessage())
 823     {
 824         ERR("can't make an outgoing COM call in response to a sent message\n");
 825         return RPC_E_CANTCALLOUT_ININPUTSYNCCALL;
 826     }
 827
 828     message_state = msg->Handle;
 829     /* restore the binding handle and the real start of data */
 830     msg->Handle = message_state->binding_handle;
 831     msg->Buffer = (char *)msg->Buffer - message_state->prefix_data_len;
 832     msg->BufferLength += message_state->prefix_data_len;
 833
 834     /* Note: this is an optimization in the Microsoft OLE runtime that we need
 835      * to copy, as shown by the test_no_couninitialize_client test. without
 836      * short-circuiting the RPC runtime in the case below, the test will
 837      * deadlock on the loader lock due to the RPC runtime needing to create
 838      * a thread to process the RPC when this function is called indirectly
 839      * from DllMain */
 840
 841     message_state->params.msg = olemsg;
 842     if (message_state->params.bypass_rpcrt)
 843     {
 844         TRACE("Calling apartment thread 0x%08x...\n", message_state->target_tid);
 845
 846         msg->ProcNum &= ~RPC_FLAGS_VALID_BIT;
 847
 848         if (!PostMessageW(message_state->target_hwnd, DM_EXECUTERPC, 0,
 849                           (LPARAM)&message_state->params))
 850         {
 851             ERR("PostMessage failed with error %u\n", GetLastError());
 852
 853             /* Note: message_state->params.iface doesn't have a reference and
 854              * so doesn't need to be released */
 855
 856             hr = HRESULT_FROM_WIN32(GetLastError());
 857         }
 858     }
 859     else
 860     {
 861         /* we use a separate thread here because we need to be able to
 862          * pump the message loop in the application thread: if we do not,
 863          * any windows created by this thread will hang and RPCs that try
 864          * and re-enter this STA from an incoming server thread will
 865          * deadlock. InstallShield is an example of that.
 866          */
 867         if (!QueueUserWorkItem(rpc_sendreceive_thread, &message_state->params, WT_EXECUTEDEFAULT))
 868         {
 869             ERR("QueueUserWorkItem failed with error %u\n", GetLastError());
 870             hr = E_UNEXPECTED;
 871         }
 872         else
 873             hr = S_OK;
 874     }
 875
 876     if (hr == S_OK)
 877     {
 878         if (WaitForSingleObject(message_state->params.handle, 0))
 879         {
 880             COM_CurrentInfo()->pending_call_count_client++;
 881             hr = CoWaitForMultipleHandles(0, INFINITE, 1, &message_state->params.handle, &index);
 882             COM_CurrentInfo()->pending_call_count_client--;
 883         }
 884     }
 885     ClientRpcChannelBuffer_ReleaseEventHandle(This, message_state->params.handle);
 886
 887     /* for WM shortcut, faults are returned in params->hr */
 888     if (hr == S_OK)
 889         hrFault = message_state->params.hr;
 890
 891     status = message_state->params.status;
 892
 893     orpcthat.flags = ORPCF_NULL;
 894     orpcthat.extensions = NULL;
 895
 896     TRACE("RPC call status: 0x%x\n", status);
 897     if (status != RPC_S_OK)
 898         hr = HRESULT_FROM_WIN32(status);
 899
 900     TRACE("hrFault = 0x%08x\n", hrFault);
 901
 902     /* FIXME: this condition should be
 903      * "hr == S_OK && (!hrFault || msg->BufferLength > FIELD_OFFSET(ORPCTHAT, extensions) + 4)"
 904      * but we don't currently reset the message length for PostMessage
 905      * dispatched calls */
 906     if (hr == S_OK && hrFault == S_OK)
 907     {
 908         HRESULT hr2;
 909         char *original_buffer = msg->Buffer;
 910
 911         /* handle ORPCTHAT and client extensions */
 912
 913         hr2 = unmarshal_ORPCTHAT(msg, &orpcthat, &orpc_ext_array, &first_wire_orpc_extent);
 914         if (FAILED(hr2))
 915             hr = hr2;
 916
 917         message_state->prefix_data_len = (char *)msg->Buffer - original_buffer;
 918         msg->BufferLength -= message_state->prefix_data_len;
 919     }
 920     else
 921         message_state->prefix_data_len = 0;
 922
 923     if (hr == S_OK)
 924     {
 925         ChannelHooks_ClientNotify(&message_state->channel_hook_info,
 926                                   msg->DataRepresentation,
 927                                   first_wire_orpc_extent,
 928                                   orpcthat.extensions && first_wire_orpc_extent ? orpcthat.extensions->size : 0,
 929                                   hrFault);
 930     }
 931
 932     /* save away the message state again */
 933     msg->Handle = message_state;
 934
 935     if (pstatus) *pstatus = status;
 936
 937     if (hr == S_OK)
 938         hr = hrFault;
 939
 940     TRACE("-- 0x%08x\n", hr);
 941
 942     return hr;
 943 }
 944
 945 static HRESULT WINAPI ServerRpcChannelBuffer_FreeBuffer(LPRPCCHANNELBUFFER iface, RPCOLEMESSAGE* olemsg)
 946 {
 947     RPC_MESSAGE *msg = (RPC_MESSAGE *)olemsg;
 948     RPC_STATUS status;
 949     struct message_state *message_state;
 950
 951     TRACE("(%p)\n", msg);
 952
 953     message_state = msg->Handle;
 954     /* restore the binding handle and the real start of data */
 955     msg->Handle = message_state->binding_handle;
 956     msg->Buffer = (char *)msg->Buffer - message_state->prefix_data_len;
 957     msg->BufferLength += message_state->prefix_data_len;
 958     message_state->prefix_data_len = 0;
 959
 960     if (message_state->bypass_rpcrt)
 961     {
 962         HeapFree(GetProcessHeap(), 0, msg->Buffer);
 963         status = RPC_S_OK;
 964     }
 965     else
 966         status = I_RpcFreeBuffer(msg);
 967
 968     msg->Handle = message_state;
 969
 970     TRACE("-- %d\n", status);
 971
 972     return HRESULT_FROM_WIN32(status);
 973 }
 974
 975 static HRESULT WINAPI ClientRpcChannelBuffer_FreeBuffer(LPRPCCHANNELBUFFER iface, RPCOLEMESSAGE* olemsg)
 976 {
 977     RPC_MESSAGE *msg = (RPC_MESSAGE *)olemsg;
 978     RPC_STATUS status;
 979     struct message_state *message_state;
 980
 981     TRACE("(%p)\n", msg);
 982
 983     message_state = msg->Handle;
 984     /* restore the binding handle and the real start of data */
 985     msg->Handle = message_state->binding_handle;
 986     msg->Buffer = (char *)msg->Buffer - message_state->prefix_data_len;
 987     msg->BufferLength += message_state->prefix_data_len;
 988
 989     if (message_state->params.bypass_rpcrt)
 990     {
 991         HeapFree(GetProcessHeap(), 0, msg->Buffer);
 992         status = RPC_S_OK;
 993     }
 994     else
 995         status = I_RpcFreeBuffer(msg);
 996
 997     HeapFree(GetProcessHeap(), 0, msg->RpcInterfaceInformation);
 998     msg->RpcInterfaceInformation = NULL;
 999
1000     if (message_state->params.stub)
1001         IRpcStubBuffer_Release(message_state->params.stub);
1002     if (message_state->params.chan)
1003         IRpcChannelBuffer_Release(message_state->params.chan);
1004     HeapFree(GetProcessHeap(), 0, message_state);
1005
1006     TRACE("-- %d\n", status);
1007
1008     return HRESULT_FROM_WIN32(status);
1009 }
1010
1011 static HRESULT WINAPI ClientRpcChannelBuffer_GetDestCtx(LPRPCCHANNELBUFFER iface, DWORD* pdwDestContext, void** ppvDestContext)
1012 {
1013     ClientRpcChannelBuffer *This = (ClientRpcChannelBuffer *)iface;
1014
1015     TRACE("(%p,%p)\n", pdwDestContext, ppvDestContext);
1016
1017     *pdwDestContext = This->dest_context;
1018     *ppvDestContext = This->dest_context_data;
1019
1020     return S_OK;
1021 }
1022
1023 static HRESULT WINAPI ServerRpcChannelBuffer_GetDestCtx(LPRPCCHANNELBUFFER iface, DWORD* pdwDestContext, void** ppvDestContext)
1024 {
1025     WARN("(%p,%p), stub!\n", pdwDestContext, ppvDestContext);
1026
1027     /* FIXME: implement this by storing the dwDestContext and pvDestContext
1028      * values passed into IMarshal_MarshalInterface and returning them here */
1029     *pdwDestContext = MSHCTX_DIFFERENTMACHINE;
1030     *ppvDestContext = NULL;
1031     return S_OK;
1032 }
1033
1034 static HRESULT WINAPI RpcChannelBuffer_IsConnected(LPRPCCHANNELBUFFER iface)
1035 {
1036     TRACE("()\n");
1037     /* native does nothing too */
1038     return S_OK;
1039 }
1040
1041 static const IRpcChannelBufferVtbl ClientRpcChannelBufferVtbl =
1042 {
1043     RpcChannelBuffer_QueryInterface,
1044     RpcChannelBuffer_AddRef,
1045     ClientRpcChannelBuffer_Release,
1046     ClientRpcChannelBuffer_GetBuffer,
1047     ClientRpcChannelBuffer_SendReceive,
1048     ClientRpcChannelBuffer_FreeBuffer,
1049     ClientRpcChannelBuffer_GetDestCtx,
1050     RpcChannelBuffer_IsConnected
1051 };
1052
1053 static const IRpcChannelBufferVtbl ServerRpcChannelBufferVtbl =
1054 {
1055     RpcChannelBuffer_QueryInterface,
1056     RpcChannelBuffer_AddRef,
1057     ServerRpcChannelBuffer_Release,
1058     ServerRpcChannelBuffer_GetBuffer,
1059     ServerRpcChannelBuffer_SendReceive,
1060     ServerRpcChannelBuffer_FreeBuffer,
1061     ServerRpcChannelBuffer_GetDestCtx,
1062     RpcChannelBuffer_IsConnected
1063 };
1064
1065 /* returns a channel buffer for proxies */
1066 HRESULT RPC_CreateClientChannel(const OXID *oxid, const IPID *ipid,
1067                                 const OXID_INFO *oxid_info,
1068                                 DWORD dest_context, void *dest_context_data,
1069                                 IRpcChannelBuffer **chan)
1070 {
1071     ClientRpcChannelBuffer *This;
1072     WCHAR                   endpoint[200];
1073     RPC_BINDING_HANDLE      bind;
1074     RPC_STATUS              status;
1075     LPWSTR                  string_binding;
1076
1077     /* FIXME: get the endpoint from oxid_info->psa instead */
1078     get_rpc_endpoint(endpoint, oxid);
1079
1080     TRACE("proxy pipe: connecting to endpoint: %s\n", debugstr_w(endpoint));
1081
1082     status = RpcStringBindingComposeW(
1083         NULL,
1084         wszRpcTransport,
1085         NULL,
1086         endpoint,
1087         NULL,
1088         &string_binding);
1089
1090     if (status == RPC_S_OK)
1091     {
1092         status = RpcBindingFromStringBindingW(string_binding, &bind);
1093
1094         if (status == RPC_S_OK)
1095         {
1096             IPID ipid2 = *ipid; /* why can't RpcBindingSetObject take a const? */
1097             status = RpcBindingSetObject(bind, &ipid2);
1098             if (status != RPC_S_OK)
1099                 RpcBindingFree(&bind);
1100         }
1101
1102         RpcStringFreeW(&string_binding);
1103     }
1104
1105     if (status != RPC_S_OK)
1106     {
1107         ERR("Couldn't get binding for endpoint %s, status = %d\n", debugstr_w(endpoint), status);
1108         return HRESULT_FROM_WIN32(status);
1109     }
1110
1111     This = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
1112     if (!This)
1113     {
1114         RpcBindingFree(&bind);
1115         return E_OUTOFMEMORY;
1116     }
1117
1118     This->super.lpVtbl = &ClientRpcChannelBufferVtbl;
1119     This->super.refs = 1;
1120     This->bind = bind;
1121     apartment_getoxid(COM_CurrentApt(), &This->oxid);
1122     This->server_pid = oxid_info->dwPid;
1123     This->dest_context = dest_context;
1124     This->dest_context_data = dest_context_data;
1125     This->event = NULL;
1126
1127     *chan = (IRpcChannelBuffer*)This;
1128
1129     return S_OK;
1130 }
1131
1132 HRESULT RPC_CreateServerChannel(IRpcChannelBuffer **chan)
1133 {
1134     RpcChannelBuffer *This = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
1135     if (!This)
1136         return E_OUTOFMEMORY;
1137
1138     This->lpVtbl = &ServerRpcChannelBufferVtbl;
1139     This->refs = 1;
1140
1141     *chan = (IRpcChannelBuffer*)This;
1142
1143     return S_OK;
1144 }
1145
1146 /* unmarshals ORPC_EXTENT_ARRAY according to NDR rules, but doesn't allocate
1147  * any memory */
1148 static HRESULT unmarshal_ORPC_EXTENT_ARRAY(RPC_MESSAGE *msg, const char *end,
1149                                            ORPC_EXTENT_ARRAY *extensions,
1150                                            WIRE_ORPC_EXTENT **first_wire_orpc_extent)
1151 {
1152     DWORD pointer_id;
1153     DWORD i;
1154
1155     memcpy(extensions, msg->Buffer, FIELD_OFFSET(ORPC_EXTENT_ARRAY, extent));
1156     msg->Buffer = (char *)msg->Buffer + FIELD_OFFSET(ORPC_EXTENT_ARRAY, extent);
1157
1158     if ((const char *)msg->Buffer + 2 * sizeof(DWORD) > end)
1159         return RPC_E_INVALID_HEADER;
1160
1161     pointer_id = *(DWORD *)msg->Buffer;
1162     msg->Buffer = (char *)msg->Buffer + sizeof(DWORD);
1163     extensions->extent = NULL;
1164
1165     if (pointer_id)
1166     {
1167         WIRE_ORPC_EXTENT *wire_orpc_extent;
1168
1169         /* conformance */
1170         if (*(DWORD *)msg->Buffer != ((extensions->size+1)&~1))
1171             return RPC_S_INVALID_BOUND;
1172
1173         msg->Buffer = (char *)msg->Buffer + sizeof(DWORD);
1174
1175         /* arbitrary limit for security (don't know what native does) */
1176         if (extensions->size > 256)
1177         {
1178             ERR("too many extensions: %d\n", extensions->size);
1179             return RPC_S_INVALID_BOUND;
1180         }
1181
1182         *first_wire_orpc_extent = wire_orpc_extent = msg->Buffer;
1183         for (i = 0; i < ((extensions->size+1)&~1); i++)
1184         {
1185             if ((const char *)&wire_orpc_extent->data[0] > end)
1186                 return RPC_S_INVALID_BOUND;
1187             if (wire_orpc_extent->conformance != ((wire_orpc_extent->size+7)&~7))
1188                 return RPC_S_INVALID_BOUND;
1189             if ((const char *)&wire_orpc_extent->data[wire_orpc_extent->conformance] > end)
1190                 return RPC_S_INVALID_BOUND;
1191             TRACE("size %u, guid %s\n", wire_orpc_extent->size, debugstr_guid(&wire_orpc_extent->id));
1192             wire_orpc_extent = (WIRE_ORPC_EXTENT *)&wire_orpc_extent->data[wire_orpc_extent->conformance];
1193         }
1194         msg->Buffer = wire_orpc_extent;
1195     }
1196
1197     return S_OK;
1198 }
1199
1200 /* unmarshals ORPCTHIS according to NDR rules, but doesn't allocate any memory */
1201 static HRESULT unmarshal_ORPCTHIS(RPC_MESSAGE *msg, ORPCTHIS *orpcthis,
1202     ORPC_EXTENT_ARRAY *orpc_ext_array, WIRE_ORPC_EXTENT **first_wire_orpc_extent)
1203 {
1204     const char *end = (char *)msg->Buffer + msg->BufferLength;
1205
1206     *first_wire_orpc_extent = NULL;
1207
1208     if (msg->BufferLength < FIELD_OFFSET(ORPCTHIS, extensions) + 4)
1209     {
1210         ERR("invalid buffer length\n");
1211         return RPC_E_INVALID_HEADER;
1212     }
1213
1214     memcpy(orpcthis, msg->Buffer, FIELD_OFFSET(ORPCTHIS, extensions));
1215     msg->Buffer = (char *)msg->Buffer + FIELD_OFFSET(ORPCTHIS, extensions);
1216
1217     if ((const char *)msg->Buffer + sizeof(DWORD) > end)
1218         return RPC_E_INVALID_HEADER;
1219
1220     if (*(DWORD *)msg->Buffer)
1221         orpcthis->extensions = orpc_ext_array;
1222     else
1223         orpcthis->extensions = NULL;
1224
1225     msg->Buffer = (char *)msg->Buffer + sizeof(DWORD);
1226
1227     if (orpcthis->extensions)
1228     {
1229         HRESULT hr = unmarshal_ORPC_EXTENT_ARRAY(msg, end, orpc_ext_array,
1230                                                  first_wire_orpc_extent);
1231         if (FAILED(hr))
1232             return hr;
1233     }
1234
1235     if ((orpcthis->version.MajorVersion != COM_MAJOR_VERSION) ||
1236         (orpcthis->version.MinorVersion > COM_MINOR_VERSION))
1237     {
1238         ERR("COM version {%d, %d} not supported\n",
1239             orpcthis->version.MajorVersion, orpcthis->version.MinorVersion);
1240         return RPC_E_VERSION_MISMATCH;
1241     }
1242
1243     if (orpcthis->flags & ~(ORPCF_LOCAL|ORPCF_RESERVED1|ORPCF_RESERVED2|ORPCF_RESERVED3|ORPCF_RESERVED4))
1244     {
1245         ERR("invalid flags 0x%x\n", orpcthis->flags & ~(ORPCF_LOCAL|ORPCF_RESERVED1|ORPCF_RESERVED2|ORPCF_RESERVED3|ORPCF_RESERVED4));
1246         return RPC_E_INVALID_HEADER;
1247     }
1248
1249     return S_OK;
1250 }
1251
1252 static HRESULT unmarshal_ORPCTHAT(RPC_MESSAGE *msg, ORPCTHAT *orpcthat,
1253                                   ORPC_EXTENT_ARRAY *orpc_ext_array, WIRE_ORPC_EXTENT **first_wire_orpc_extent)
1254 {
1255     const char *end = (char *)msg->Buffer + msg->BufferLength;
1256
1257     *first_wire_orpc_extent = NULL;
1258
1259     if (msg->BufferLength < FIELD_OFFSET(ORPCTHAT, extensions) + 4)
1260     {
1261         ERR("invalid buffer length\n");
1262         return RPC_E_INVALID_HEADER;
1263     }
1264
1265     memcpy(orpcthat, msg->Buffer, FIELD_OFFSET(ORPCTHAT, extensions));
1266     msg->Buffer = (char *)msg->Buffer + FIELD_OFFSET(ORPCTHAT, extensions);
1267
1268     if ((const char *)msg->Buffer + sizeof(DWORD) > end)
1269         return RPC_E_INVALID_HEADER;
1270
1271     if (*(DWORD *)msg->Buffer)
1272         orpcthat->extensions = orpc_ext_array;
1273     else
1274         orpcthat->extensions = NULL;
1275
1276     msg->Buffer = (char *)msg->Buffer + sizeof(DWORD);
1277
1278     if (orpcthat->extensions)
1279     {
1280         HRESULT hr = unmarshal_ORPC_EXTENT_ARRAY(msg, end, orpc_ext_array,
1281                                                  first_wire_orpc_extent);
1282         if (FAILED(hr))
1283             return hr;
1284     }
1285
1286     if (orpcthat->flags & ~(ORPCF_LOCAL|ORPCF_RESERVED1|ORPCF_RESERVED2|ORPCF_RESERVED3|ORPCF_RESERVED4))
1287     {
1288         ERR("invalid flags 0x%x\n", orpcthat->flags & ~(ORPCF_LOCAL|ORPCF_RESERVED1|ORPCF_RESERVED2|ORPCF_RESERVED3|ORPCF_RESERVED4));
1289         return RPC_E_INVALID_HEADER;
1290     }
1291
1292     return S_OK;
1293 }
1294
1295 void RPC_ExecuteCall(struct dispatch_params *params)
1296 {
1297     struct message_state *message_state = NULL;
1298     RPC_MESSAGE *msg = (RPC_MESSAGE *)params->msg;
1299     char *original_buffer = msg->Buffer;
1300     ORPCTHIS orpcthis;
1301     ORPC_EXTENT_ARRAY orpc_ext_array;
1302     WIRE_ORPC_EXTENT *first_wire_orpc_extent;
1303     GUID old_causality_id;
1304
1305     /* handle ORPCTHIS and server extensions */
1306
1307     params->hr = unmarshal_ORPCTHIS(msg, &orpcthis, &orpc_ext_array, &first_wire_orpc_extent);
1308     if (params->hr != S_OK)
1309     {
1310         msg->Buffer = original_buffer;
1311         goto exit;
1312     }
1313
1314     message_state = HeapAlloc(GetProcessHeap(), 0, sizeof(*message_state));
1315     if (!message_state)
1316     {
1317         params->hr = E_OUTOFMEMORY;
1318         msg->Buffer = original_buffer;
1319         goto exit;
1320     }
1321
1322     message_state->prefix_data_len = (char *)msg->Buffer - original_buffer;
1323     message_state->binding_handle = msg->Handle;
1324     message_state->bypass_rpcrt = params->bypass_rpcrt;
1325
1326     message_state->channel_hook_info.iid = params->iid;
1327     message_state->channel_hook_info.cbSize = sizeof(message_state->channel_hook_info);
1328     message_state->channel_hook_info.uCausality = orpcthis.cid;
1329     message_state->channel_hook_info.dwServerPid = GetCurrentProcessId();
1330     message_state->channel_hook_info.iMethod = msg->ProcNum;
1331     message_state->channel_hook_info.pObject = params->iface;
1332
1333     if (orpcthis.extensions && first_wire_orpc_extent &&
1334         orpcthis.extensions->size)
1335         ChannelHooks_ServerNotify(&message_state->channel_hook_info, msg->DataRepresentation, first_wire_orpc_extent, orpcthis.extensions->size);
1336
1337     msg->Handle = message_state;
1338     msg->BufferLength -= message_state->prefix_data_len;
1339
1340     /* call message filter */
1341
1342     if (COM_CurrentApt()->filter)
1343     {
1344         DWORD handlecall;
1345         INTERFACEINFO interface_info;
1346         CALLTYPE calltype;
1347
1348         interface_info.pUnk = params->iface;
1349         interface_info.iid = params->iid;
1350         interface_info.wMethod = msg->ProcNum;
1351
1352         if (IsEqualGUID(&orpcthis.cid, &COM_CurrentInfo()->causality_id))
1353             calltype = CALLTYPE_NESTED;
1354         else if (COM_CurrentInfo()->pending_call_count_server == 0)
1355             calltype = CALLTYPE_TOPLEVEL;
1356         else
1357             calltype = CALLTYPE_TOPLEVEL_CALLPENDING;
1358
1359         handlecall = IMessageFilter_HandleInComingCall(COM_CurrentApt()->filter,
1360                                                        calltype,
1361                                                        (HTASK)GetCurrentProcessId(),
1362                                                        0 /* FIXME */,
1363                                                        &interface_info);
1364         TRACE("IMessageFilter_HandleInComingCall returned %d\n", handlecall);
1365         switch (handlecall)
1366         {
1367         case SERVERCALL_REJECTED:
1368             params->hr = RPC_E_CALL_REJECTED;
1369             goto exit_reset_state;
1370         case SERVERCALL_RETRYLATER:
1371 #if 0 /* FIXME: handle retries on the client side before enabling this code */
1372             params->hr = RPC_E_RETRY;
1373             goto exit_reset_state;
1374 #else
1375             FIXME("retry call later not implemented\n");
1376             break;
1377 #endif
1378         case SERVERCALL_ISHANDLED:
1379         default:
1380             break;
1381         }
1382     }
1383
1384     /* invoke the method */
1385
1386     /* save the old causality ID - note: any calls executed while processing
1387      * messages received during the SendReceive will appear to originate from
1388      * this call - this should be checked with what Windows does */
1389     old_causality_id = COM_CurrentInfo()->causality_id;
1390     COM_CurrentInfo()->causality_id = orpcthis.cid;
1391     COM_CurrentInfo()->pending_call_count_server++;
1392     params->hr = IRpcStubBuffer_Invoke(params->stub, params->msg, params->chan);
1393     COM_CurrentInfo()->pending_call_count_server--;
1394     COM_CurrentInfo()->causality_id = old_causality_id;
1395
1396     /* the invoke allocated a new buffer, so free the old one */
1397     if (message_state->bypass_rpcrt && original_buffer != msg->Buffer)
1398         HeapFree(GetProcessHeap(), 0, original_buffer);
1399
1400 exit_reset_state:
1401     message_state = msg->Handle;
1402     msg->Handle = message_state->binding_handle;
1403     msg->Buffer = (char *)msg->Buffer - message_state->prefix_data_len;
1404     msg->BufferLength += message_state->prefix_data_len;
1405
1406 exit:
1407     HeapFree(GetProcessHeap(), 0, message_state);
1408     if (params->handle) SetEvent(params->handle);
1409 }
1410
1411 static void __RPC_STUB dispatch_rpc(RPC_MESSAGE *msg)
1412 {
1413     struct dispatch_params *params;
1414     APARTMENT *apt;
1415     IPID ipid;
1416     HRESULT hr;
1417
1418     RpcBindingInqObject(msg->Handle, &ipid);
1419
1420     TRACE("ipid = %s, iMethod = %d\n", debugstr_guid(&ipid), msg->ProcNum);
1421
1422     params = HeapAlloc(GetProcessHeap(), 0, sizeof(*params));
1423     if (!params)
1424     {
1425         RpcRaiseException(E_OUTOFMEMORY);
1426         return;
1427     }
1428
1429     hr = ipid_get_dispatch_params(&ipid, &apt, &params->stub, &params->chan,
1430                                   &params->iid, &params->iface);
1431     if (hr != S_OK)
1432     {
1433         ERR("no apartment found for ipid %s\n", debugstr_guid(&ipid));
1434         HeapFree(GetProcessHeap(), 0, params);
1435         RpcRaiseException(hr);
1436         return;
1437     }
1438
1439     params->msg = (RPCOLEMESSAGE *)msg;
1440     params->status = RPC_S_OK;
1441     params->hr = S_OK;
1442     params->handle = NULL;
1443     params->bypass_rpcrt = FALSE;
1444
1445     /* Note: this is the important difference between STAs and MTAs - we
1446      * always execute RPCs to STAs in the thread that originally created the
1447      * apartment (i.e. the one that pumps messages to the window) */
1448     if (!apt->multi_threaded)
1449     {
1450         params->handle = CreateEventW(NULL, FALSE, FALSE, NULL);
1451
1452         TRACE("Calling apartment thread 0x%08x...\n", apt->tid);
1453
1454         if (PostMessageW(apartment_getwindow(apt), DM_EXECUTERPC, 0, (LPARAM)params))
1455             WaitForSingleObject(params->handle, INFINITE);
1456         else
1457         {
1458             ERR("PostMessage failed with error %u\n", GetLastError());
1459             IRpcChannelBuffer_Release(params->chan);
1460             IRpcStubBuffer_Release(params->stub);
1461         }
1462         CloseHandle(params->handle);
1463     }
1464     else
1465     {
1466         BOOL joined = FALSE;
1467         if (!COM_CurrentInfo()->apt)
1468         {
1469             apartment_joinmta();
1470             joined = TRUE;
1471         }
1472         RPC_ExecuteCall(params);
1473         if (joined)
1474         {
1475             apartment_release(COM_CurrentInfo()->apt);
1476             COM_CurrentInfo()->apt = NULL;
1477         }
1478     }
1479
1480     hr = params->hr;
1481     if (params->chan)
1482         IRpcChannelBuffer_Release(params->chan);
1483     if (params->stub)
1484         IRpcStubBuffer_Release(params->stub);
1485     HeapFree(GetProcessHeap(), 0, params);
1486
1487     apartment_release(apt);
1488
1489     /* if IRpcStubBuffer_Invoke fails, we should raise an exception to tell
1490      * the RPC runtime that the call failed */
1491     if (hr) RpcRaiseException(hr);
1492 }
1493
1494 /* stub registration */
1495 HRESULT RPC_RegisterInterface(REFIID riid)
1496 {
1497     struct registered_if *rif;
1498     BOOL found = FALSE;
1499     HRESULT hr = S_OK;
1500
1501     TRACE("(%s)\n", debugstr_guid(riid));
1502
1503     EnterCriticalSection(&csRegIf);
1504     LIST_FOR_EACH_ENTRY(rif, &registered_interfaces, struct registered_if, entry)
1505     {
1506         if (IsEqualGUID(&rif->If.InterfaceId.SyntaxGUID, riid))
1507         {
1508             rif->refs++;
1509             found = TRUE;
1510             break;
1511         }
1512     }
1513     if (!found)
1514     {
1515         TRACE("Creating new interface\n");
1516
1517         rif = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*rif));
1518         if (rif)
1519         {
1520             RPC_STATUS status;
1521
1522             rif->refs = 1;
1523             rif->If.Length = sizeof(RPC_SERVER_INTERFACE);
1524             /* RPC interface ID = COM interface ID */
1525             rif->If.InterfaceId.SyntaxGUID = *riid;
1526             rif->If.DispatchTable = &rpc_dispatch;
1527             /* all other fields are 0, including the version asCOM objects
1528              * always have a version of 0.0 */
1529             status = RpcServerRegisterIfEx(
1530                 (RPC_IF_HANDLE)&rif->If,
1531                 NULL, NULL,
1532                 RPC_IF_OLE | RPC_IF_AUTOLISTEN,
1533                 RPC_C_LISTEN_MAX_CALLS_DEFAULT,
1534                 NULL);
1535             if (status == RPC_S_OK)
1536                 list_add_tail(&registered_interfaces, &rif->entry);
1537             else
1538             {
1539                 ERR("RpcServerRegisterIfEx failed with error %d\n", status);
1540                 HeapFree(GetProcessHeap(), 0, rif);
1541                 hr = HRESULT_FROM_WIN32(status);
1542             }
1543         }
1544         else
1545             hr = E_OUTOFMEMORY;
1546     }
1547     LeaveCriticalSection(&csRegIf);
1548     return hr;
1549 }
1550
1551 /* stub unregistration */
1552 void RPC_UnregisterInterface(REFIID riid)
1553 {
1554     struct registered_if *rif;
1555     EnterCriticalSection(&csRegIf);
1556     LIST_FOR_EACH_ENTRY(rif, &registered_interfaces, struct registered_if, entry)
1557     {
1558         if (IsEqualGUID(&rif->If.InterfaceId.SyntaxGUID, riid))
1559         {
1560             if (!--rif->refs)
1561             {
1562                 RpcServerUnregisterIf((RPC_IF_HANDLE)&rif->If, NULL, TRUE);
1563                 list_remove(&rif->entry);
1564                 HeapFree(GetProcessHeap(), 0, rif);
1565             }
1566             break;
1567         }
1568     }
1569     LeaveCriticalSection(&csRegIf);
1570 }
1571
1572 /* get the info for an OXID, including the IPID for the rem unknown interface
1573  * and the string binding */
1574 HRESULT RPC_ResolveOxid(OXID oxid, OXID_INFO *oxid_info)
1575 {
1576     TRACE("%s\n", wine_dbgstr_longlong(oxid));
1577
1578     oxid_info->dwTid = 0;
1579     oxid_info->dwPid = 0;
1580     oxid_info->dwAuthnHint = RPC_C_AUTHN_LEVEL_NONE;
1581     /* FIXME: this is a hack around not having an OXID resolver yet -
1582      * this function should contact the machine's OXID resolver and then it
1583      * should give us the IPID of the IRemUnknown interface */
1584     oxid_info->ipidRemUnknown.Data1 = 0xffffffff;
1585     oxid_info->ipidRemUnknown.Data2 = 0xffff;
1586     oxid_info->ipidRemUnknown.Data3 = 0xffff;
1587     memcpy(oxid_info->ipidRemUnknown.Data4, &oxid, sizeof(OXID));
1588     oxid_info->psa = NULL /* FIXME */;
1589
1590     return S_OK;
1591 }
1592
1593 /* make the apartment reachable by other threads and processes and create the
1594  * IRemUnknown object */
1595 void RPC_StartRemoting(struct apartment *apt)
1596 {
1597     if (!InterlockedExchange(&apt->remoting_started, TRUE))
1598     {
1599         WCHAR endpoint[200];
1600         RPC_STATUS status;
1601
1602         get_rpc_endpoint(endpoint, &apt->oxid);
1603
1604         status = RpcServerUseProtseqEpW(
1605             wszRpcTransport,
1606             RPC_C_PROTSEQ_MAX_REQS_DEFAULT,
1607             endpoint,
1608             NULL);
1609         if (status != RPC_S_OK)
1610             ERR("Couldn't register endpoint %s\n", debugstr_w(endpoint));
1611
1612         /* FIXME: move remote unknown exporting into this function */
1613     }
1614     start_apartment_remote_unknown();
1615 }
1616
1617
1618 static HRESULT create_server(REFCLSID rclsid)
1619 {
1620     static const WCHAR  wszLocalServer32[] = { 'L','o','c','a','l','S','e','r','v','e','r','3','2',0 };
1621     static const WCHAR  embedding[] = { ' ', '-','E','m','b','e','d','d','i','n','g',0 };
1622     HKEY                key;
1623     HRESULT             hres;
1624     WCHAR               command[MAX_PATH+sizeof(embedding)/sizeof(WCHAR)];
1625     DWORD               size = (MAX_PATH+1) * sizeof(WCHAR);
1626     STARTUPINFOW        sinfo;
1627     PROCESS_INFORMATION pinfo;
1628
1629     hres = COM_OpenKeyForCLSID(rclsid, wszLocalServer32, KEY_READ, &key);
1630     if (FAILED(hres)) {
1631         ERR("class %s not registered\n", debugstr_guid(rclsid));
1632         return hres;
1633     }
1634
1635     hres = RegQueryValueExW(key, NULL, NULL, NULL, (LPBYTE)command, &size);
1636     RegCloseKey(key);
1637     if (hres) {
1638         WARN("No default value for LocalServer32 key\n");
1639         return REGDB_E_CLASSNOTREG; /* FIXME: check retval */
1640     }
1641
1642     memset(&sinfo,0,sizeof(sinfo));
1643     sinfo.cb = sizeof(sinfo);
1644
1645     /* EXE servers are started with the -Embedding switch. */
1646
1647     strcatW(command, embedding);
1648
1649     TRACE("activating local server %s for %s\n", debugstr_w(command), debugstr_guid(rclsid));
1650
1651     /* FIXME: Win2003 supports a ServerExecutable value that is passed into
1652      * CreateProcess */
1653     if (!CreateProcessW(NULL, command, NULL, NULL, FALSE, 0, NULL, NULL, &sinfo, &pinfo)) {
1654         WARN("failed to run local server %s\n", debugstr_w(command));
1655         return HRESULT_FROM_WIN32(GetLastError());
1656     }
1657     CloseHandle(pinfo.hProcess);
1658     CloseHandle(pinfo.hThread);
1659
1660     return S_OK;
1661 }
1662
1663 /*
1664  * start_local_service()  - start a service given its name and parameters
1665  */
1666 static DWORD start_local_service(LPCWSTR name, DWORD num, LPCWSTR *params)
1667 {
1668     SC_HANDLE handle, hsvc;
1669     DWORD     r = ERROR_FUNCTION_FAILED;
1670
1671     TRACE("Starting service %s %d params\n", debugstr_w(name), num);
1672
1673     handle = OpenSCManagerW(NULL, NULL, SC_MANAGER_CONNECT);
1674     if (!handle)
1675         return r;
1676     hsvc = OpenServiceW(handle, name, SERVICE_START);
1677     if (hsvc)
1678     {
1679         if(StartServiceW(hsvc, num, params))
1680             r = ERROR_SUCCESS;
1681         else
1682             r = GetLastError();
1683         if (r == ERROR_SERVICE_ALREADY_RUNNING)
1684             r = ERROR_SUCCESS;
1685         CloseServiceHandle(hsvc);
1686     }
1687     else
1688         r = GetLastError();
1689     CloseServiceHandle(handle);
1690
1691     TRACE("StartService returned error %u (%s)\n", r, (r == ERROR_SUCCESS) ? "ok":"failed");
1692
1693     return r;
1694 }
1695
1696 /*
1697  * create_local_service()  - start a COM server in a service
1698  *
1699  *   To start a Local Service, we read the AppID value under
1700  * the class's CLSID key, then open the HKCR\\AppId key specified
1701  * there and check for a LocalService value.
1702  *
1703  * Note:  Local Services are not supported under Windows 9x
1704  */
1705 static HRESULT create_local_service(REFCLSID rclsid)
1706 {
1707     HRESULT hres;
1708     WCHAR buf[CHARS_IN_GUID];
1709     static const WCHAR szLocalService[] = { 'L','o','c','a','l','S','e','r','v','i','c','e',0 };
1710     static const WCHAR szServiceParams[] = {'S','e','r','v','i','c','e','P','a','r','a','m','s',0};
1711     HKEY hkey;
1712     LONG r;
1713     DWORD type, sz;
1714
1715     TRACE("Attempting to start Local service for %s\n", debugstr_guid(rclsid));
1716
1717     hres = COM_OpenKeyForAppIdFromCLSID(rclsid, KEY_READ, &hkey);
1718     if (FAILED(hres))
1719         return hres;
1720
1721     /* read the LocalService and ServiceParameters values from the AppID key */
1722     sz = sizeof buf;
1723     r = RegQueryValueExW(hkey, szLocalService, NULL, &type, (LPBYTE)buf, &sz);
1724     if (r==ERROR_SUCCESS && type==REG_SZ)
1725     {
1726         DWORD num_args = 0;
1727         LPWSTR args[1] = { NULL };
1728
1729         /*
1730          * FIXME: I'm not really sure how to deal with the service parameters.
1731          *        I suspect that the string returned from RegQueryValueExW
1732          *        should be split into a number of arguments by spaces.
1733          *        It would make more sense if ServiceParams contained a
1734          *        REG_MULTI_SZ here, but it's a REG_SZ for the services
1735          *        that I'm interested in for the moment.
1736          */
1737         r = RegQueryValueExW(hkey, szServiceParams, NULL, &type, NULL, &sz);
1738         if (r == ERROR_SUCCESS && type == REG_SZ && sz)
1739         {
1740             args[0] = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sz);
1741             num_args++;
1742             RegQueryValueExW(hkey, szServiceParams, NULL, &type, (LPBYTE)args[0], &sz);
1743         }
1744         r = start_local_service(buf, num_args, (LPCWSTR *)args);
1745         if (r != ERROR_SUCCESS)
1746             hres = REGDB_E_CLASSNOTREG; /* FIXME: check retval */
1747         HeapFree(GetProcessHeap(),0,args[0]);
1748     }
1749     else
1750     {
1751         WARN("No LocalService value\n");
1752         hres = REGDB_E_CLASSNOTREG; /* FIXME: check retval */
1753     }
1754     RegCloseKey(hkey);
1755
1756     return hres;
1757 }
1758
1759
1760 static void get_localserver_pipe_name(WCHAR *pipefn, REFCLSID rclsid)
1761 {
1762     static const WCHAR wszPipeRef[] = {'\\','\\','.','\\','p','i','p','e','\\',0};
1763     strcpyW(pipefn, wszPipeRef);
1764     StringFromGUID2(rclsid, pipefn + sizeof(wszPipeRef)/sizeof(wszPipeRef[0]) - 1, CHARS_IN_GUID);
1765 }
1766
1767 /* FIXME: should call to rpcss instead */
1768 HRESULT RPC_GetLocalClassObject(REFCLSID rclsid, REFIID iid, LPVOID *ppv)
1769 {
1770     HRESULT        hres;
1771     HANDLE         hPipe;
1772     WCHAR          pipefn[100];
1773     DWORD          res, bufferlen;
1774     char           marshalbuffer[200];
1775     IStream       *pStm;
1776     LARGE_INTEGER  seekto;
1777     ULARGE_INTEGER newpos;
1778     int            tries = 0;
1779
1780     static const int MAXTRIES = 30; /* 30 seconds */
1781
1782     TRACE("rclsid=%s, iid=%s\n", debugstr_guid(rclsid), debugstr_guid(iid));
1783
1784     get_localserver_pipe_name(pipefn, rclsid);
1785
1786     while (tries++ < MAXTRIES) {
1787         TRACE("waiting for %s\n", debugstr_w(pipefn));
1788
1789         WaitNamedPipeW( pipefn, NMPWAIT_WAIT_FOREVER );
1790         hPipe = CreateFileW(pipefn, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, 0);
1791         if (hPipe == INVALID_HANDLE_VALUE) {
1792             DWORD index;
1793             DWORD start_ticks;
1794             if (tries == 1) {
1795                 if ( (hres = create_local_service(rclsid)) &&
1796                      (hres = create_server(rclsid)) )
1797                     return hres;
1798             } else {
1799                 WARN("Connecting to %s, no response yet, retrying: le is %u\n", debugstr_w(pipefn), GetLastError());
1800             }
1801             /* wait for one second, even if messages arrive */
1802             start_ticks = GetTickCount();
1803             do {
1804                 CoWaitForMultipleHandles(0, 1000, 0, NULL, &index);
1805             } while (GetTickCount() - start_ticks < 1000);
1806             continue;
1807         }
1808         bufferlen = 0;
1809         if (!ReadFile(hPipe,marshalbuffer,sizeof(marshalbuffer),&bufferlen,NULL)) {
1810             FIXME("Failed to read marshal id from classfactory of %s.\n",debugstr_guid(rclsid));
1811             Sleep(1000);
1812             continue;
1813         }
1814         TRACE("read marshal id from pipe\n");
1815         CloseHandle(hPipe);
1816         break;
1817     }
1818
1819     if (tries >= MAXTRIES)
1820         return E_NOINTERFACE;
1821
1822     hres = CreateStreamOnHGlobal(0,TRUE,&pStm);
1823     if (hres) return hres;
1824     hres = IStream_Write(pStm,marshalbuffer,bufferlen,&res);
1825     if (hres) goto out;
1826     seekto.u.LowPart = 0;seekto.u.HighPart = 0;
1827     hres = IStream_Seek(pStm,seekto,STREAM_SEEK_SET,&newpos);
1828
1829     TRACE("unmarshalling classfactory\n");
1830     hres = CoUnmarshalInterface(pStm,&IID_IClassFactory,ppv);
1831 out:
1832     IStream_Release(pStm);
1833     return hres;
1834 }
1835
1836
1837 struct local_server_params
1838 {
1839     CLSID clsid;
1840     IStream *stream;
1841     HANDLE ready_event;
1842     HANDLE stop_event;
1843     HANDLE thread;
1844     BOOL multi_use;
1845 };
1846
1847 /* FIXME: should call to rpcss instead */
1848 static DWORD WINAPI local_server_thread(LPVOID param)
1849 {
1850     struct local_server_params * lsp = param;
1851     HANDLE              hPipe;
1852     WCHAR               pipefn[100];
1853     HRESULT             hres;
1854     IStream             *pStm = lsp->stream;
1855     STATSTG             ststg;
1856     unsigned char       *buffer;
1857     int                 buflen;
1858     LARGE_INTEGER       seekto;
1859     ULARGE_INTEGER      newpos;
1860     ULONG               res;
1861     BOOL multi_use = lsp->multi_use;
1862     OVERLAPPED ovl;
1863     HANDLE pipe_event;
1864     DWORD  bytes;
1865
1866     TRACE("Starting threader for %s.\n",debugstr_guid(&lsp->clsid));
1867
1868     memset(&ovl, 0, sizeof(ovl));
1869     get_localserver_pipe_name(pipefn, &lsp->clsid);
1870
1871     hPipe = CreateNamedPipeW( pipefn, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1872                               PIPE_TYPE_BYTE|PIPE_WAIT, PIPE_UNLIMITED_INSTANCES,
1873                               4096, 4096, 500 /* 0.5 second timeout */, NULL );
1874
1875     SetEvent(lsp->ready_event);
1876
1877     if (hPipe == INVALID_HANDLE_VALUE)
1878     {
1879         FIXME("pipe creation failed for %s, le is %u\n", debugstr_w(pipefn), GetLastError());
1880         return 1;
1881     }
1882
1883     ovl.hEvent = pipe_event = CreateEventW(NULL, FALSE, FALSE, NULL);
1884
1885     while (1) {
1886         if (!ConnectNamedPipe(hPipe, &ovl))
1887         {
1888             DWORD error = GetLastError();
1889             if (error == ERROR_IO_PENDING)
1890             {
1891                 HANDLE handles[2] = { pipe_event, lsp->stop_event };
1892                 DWORD ret;
1893                 ret = WaitForMultipleObjects(2, handles, FALSE, INFINITE);
1894                 if (ret != WAIT_OBJECT_0)
1895                     break;
1896             }
1897             /* client already connected isn't an error */
1898             else if (error != ERROR_PIPE_CONNECTED)
1899             {
1900                 ERR("ConnectNamedPipe failed with error %d\n", GetLastError());
1901                 break;
1902             }
1903         }
1904
1905         TRACE("marshalling IClassFactory to client\n");
1906
1907         hres = IStream_Stat(pStm,&ststg,STATFLAG_NONAME);
1908         if (hres) return hres;
1909
1910         seekto.u.LowPart = 0;
1911         seekto.u.HighPart = 0;
1912         hres = IStream_Seek(pStm,seekto,STREAM_SEEK_SET,&newpos);
1913         if (hres) {
1914             FIXME("IStream_Seek failed, %x\n",hres);
1915             CloseHandle(hPipe);
1916             CloseHandle(pipe_event);
1917             return hres;
1918         }
1919
1920         buflen = ststg.cbSize.u.LowPart;
1921         buffer = HeapAlloc(GetProcessHeap(),0,buflen);
1922
1923         hres = IStream_Read(pStm,buffer,buflen,&res);
1924         if (hres) {
1925             FIXME("Stream Read failed, %x\n",hres);
1926             CloseHandle(hPipe);
1927             CloseHandle(pipe_event);
1928             HeapFree(GetProcessHeap(),0,buffer);
1929             return hres;
1930         }
1931
1932         WriteFile(hPipe,buffer,buflen,&res,&ovl);
1933         GetOverlappedResult(hPipe, &ovl, &bytes, TRUE);
1934         HeapFree(GetProcessHeap(),0,buffer);
1935
1936         FlushFileBuffers(hPipe);
1937         DisconnectNamedPipe(hPipe);
1938
1939         TRACE("done marshalling IClassFactory\n");
1940
1941         if (!multi_use)
1942         {
1943             TRACE("single use object, shutting down pipe %s\n", debugstr_w(pipefn));
1944             break;
1945         }
1946     }
1947     CloseHandle(hPipe);
1948     CloseHandle(pipe_event);
1949     return 0;
1950 }
1951
1952 /* starts listening for a local server */
1953 HRESULT RPC_StartLocalServer(REFCLSID clsid, IStream *stream, BOOL multi_use, void **registration)
1954 {
1955     DWORD tid;
1956     struct local_server_params *lsp;
1957
1958     lsp = HeapAlloc(GetProcessHeap(), 0, sizeof(*lsp));
1959     if (!lsp)
1960         return E_OUTOFMEMORY;
1961
1962     lsp->clsid = *clsid;
1963     lsp->stream = stream;
1964     IStream_AddRef(stream);
1965     lsp->ready_event = CreateEventW(NULL, FALSE, FALSE, NULL);
1966     if (!lsp->ready_event)
1967     {
1968         HeapFree(GetProcessHeap(), 0, lsp);
1969         return HRESULT_FROM_WIN32(GetLastError());
1970     }
1971     lsp->stop_event = CreateEventW(NULL, FALSE, FALSE, NULL);
1972     if (!lsp->stop_event)
1973     {
1974         CloseHandle(lsp->ready_event);
1975         HeapFree(GetProcessHeap(), 0, lsp);
1976         return HRESULT_FROM_WIN32(GetLastError());
1977     }
1978     lsp->multi_use = multi_use;
1979
1980     lsp->thread = CreateThread(NULL, 0, local_server_thread, lsp, 0, &tid);
1981     if (!lsp->thread)
1982     {
1983         CloseHandle(lsp->ready_event);
1984         CloseHandle(lsp->stop_event);
1985         HeapFree(GetProcessHeap(), 0, lsp);
1986         return HRESULT_FROM_WIN32(GetLastError());
1987     }
1988
1989     WaitForSingleObject(lsp->ready_event, INFINITE);
1990     CloseHandle(lsp->ready_event);
1991     lsp->ready_event = NULL;
1992
1993     *registration = lsp;
1994     return S_OK;
1995 }
1996
1997 /* stops listening for a local server */
1998 void RPC_StopLocalServer(void *registration)
1999 {
2000     struct local_server_params *lsp = registration;
2001
2002     /* signal local_server_thread to stop */
2003     SetEvent(lsp->stop_event);
2004     /* wait for it to exit */
2005     WaitForSingleObject(lsp->thread, INFINITE);
2006
2007     IStream_Release(lsp->stream);
2008     CloseHandle(lsp->stop_event);
2009     CloseHandle(lsp->thread);
2010     HeapFree(GetProcessHeap(), 0, lsp);
2011 }