git.oblomov.eu Git - wine/blob - dlls/rpcrt4/rpc_transport.c

   1 /*
   2  * RPC transport layer
   3  *
   4  * Copyright 2001 Ove Kåven, TransGaming Technologies
   5  * Copyright 2003 Mike Hearn
   6  * Copyright 2004 Filip Navara
   7  * Copyright 2006 Mike McCormack
   8  * Copyright 2006 Damjan Jovanovic
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  23  *
  24  */
  25
  26 #include "config.h"
  27
  28 #include <stdarg.h>
  29 #include <stdio.h>
  30 #include <string.h>
  31 #include <assert.h>
  32 #include <stdlib.h>
  33 #include <sys/types.h>
  34
  35 #if defined(__MINGW32__) || defined (_MSC_VER)
  36 # include <ws2tcpip.h>
  37 # ifndef EADDRINUSE
  38 #  define EADDRINUSE WSAEADDRINUSE
  39 # endif
  40 # ifndef EAGAIN
  41 #  define EAGAIN WSAEWOULDBLOCK
  42 # endif
  43 #else
  44 # include <errno.h>
  45 # ifdef HAVE_UNISTD_H
  46 #  include <unistd.h>
  47 # endif
  48 # include <fcntl.h>
  49 # ifdef HAVE_SYS_SOCKET_H
  50 #  include <sys/socket.h>
  51 # endif
  52 # ifdef HAVE_NETINET_IN_H
  53 #  include <netinet/in.h>
  54 # endif
  55 # ifdef HAVE_NETINET_TCP_H
  56 #  include <netinet/tcp.h>
  57 # endif
  58 # ifdef HAVE_ARPA_INET_H
  59 #  include <arpa/inet.h>
  60 # endif
  61 # ifdef HAVE_NETDB_H
  62 #  include <netdb.h>
  63 # endif
  64 # ifdef HAVE_SYS_POLL_H
  65 #  include <sys/poll.h>
  66 # endif
  67 # define closesocket close
  68 #endif /* defined(__MINGW32__) || defined (_MSC_VER) */
  69
  70 #include "windef.h"
  71 #include "winbase.h"
  72 #include "winnls.h"
  73 #include "winerror.h"
  74 #include "winternl.h"
  75 #include "wine/unicode.h"
  76
  77 #include "rpc.h"
  78 #include "rpcndr.h"
  79
  80 #include "wine/debug.h"
  81
  82 #include "rpc_binding.h"
  83 #include "rpc_message.h"
  84 #include "rpc_server.h"
  85 #include "epm_towers.h"
  86
  87 #ifndef SOL_TCP
  88 # define SOL_TCP IPPROTO_TCP
  89 #endif
  90
  91 WINE_DEFAULT_DEBUG_CHANNEL(rpc);
  92
  93 /**** ncacn_np support ****/
  94
  95 typedef struct _RpcConnection_np
  96 {
  97   RpcConnection common;
  98   HANDLE pipe;
  99   OVERLAPPED ovl;
 100   BOOL listening;
 101 } RpcConnection_np;
 102
 103 static RpcConnection *rpcrt4_conn_np_alloc(void)
 104 {
 105   RpcConnection_np *npc = HeapAlloc(GetProcessHeap(), 0, sizeof(RpcConnection_np));
 106   if (npc)
 107   {
 108     npc->pipe = NULL;
 109     memset(&npc->ovl, 0, sizeof(npc->ovl));
 110     npc->listening = FALSE;
 111   }
 112   return &npc->common;
 113 }
 114
 115 static RPC_STATUS rpcrt4_conn_listen_pipe(RpcConnection_np *npc)
 116 {
 117   if (npc->listening)
 118     return RPC_S_OK;
 119
 120   npc->listening = TRUE;
 121   for (;;)
 122   {
 123       if (ConnectNamedPipe(npc->pipe, &npc->ovl))
 124           return RPC_S_OK;
 125
 126       switch(GetLastError())
 127       {
 128       case ERROR_PIPE_CONNECTED:
 129           SetEvent(npc->ovl.hEvent);
 130           return RPC_S_OK;
 131       case ERROR_IO_PENDING:
 132           /* will be completed in rpcrt4_protseq_np_wait_for_new_connection */
 133           return RPC_S_OK;
 134       case ERROR_NO_DATA_DETECTED:
 135           /* client has disconnected, retry */
 136           DisconnectNamedPipe( npc->pipe );
 137           break;
 138       default:
 139           npc->listening = FALSE;
 140           WARN("Couldn't ConnectNamedPipe (error was %d)\n", GetLastError());
 141           return RPC_S_OUT_OF_RESOURCES;
 142       }
 143   }
 144 }
 145
 146 static RPC_STATUS rpcrt4_conn_create_pipe(RpcConnection *Connection, LPCSTR pname)
 147 {
 148   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 149   TRACE("listening on %s\n", pname);
 150
 151   npc->pipe = CreateNamedPipeA(pname, PIPE_ACCESS_DUPLEX,
 152                                PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE,
 153                                PIPE_UNLIMITED_INSTANCES,
 154                                RPC_MAX_PACKET_SIZE, RPC_MAX_PACKET_SIZE, 5000, NULL);
 155   if (npc->pipe == INVALID_HANDLE_VALUE) {
 156     WARN("CreateNamedPipe failed with error %d\n", GetLastError());
 157     if (GetLastError() == ERROR_FILE_EXISTS)
 158       return RPC_S_DUPLICATE_ENDPOINT;
 159     else
 160       return RPC_S_CANT_CREATE_ENDPOINT;
 161   }
 162
 163   memset(&npc->ovl, 0, sizeof(npc->ovl));
 164   npc->ovl.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
 165
 166   /* Note: we don't call ConnectNamedPipe here because it must be done in the
 167    * server thread as the thread must be alertable */
 168   return RPC_S_OK;
 169 }
 170
 171 static RPC_STATUS rpcrt4_conn_open_pipe(RpcConnection *Connection, LPCSTR pname, BOOL wait)
 172 {
 173   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 174   HANDLE pipe;
 175   DWORD err, dwMode;
 176
 177   TRACE("connecting to %s\n", pname);
 178
 179   while (TRUE) {
 180     DWORD dwFlags = 0;
 181     if (Connection->QOS)
 182     {
 183         dwFlags = SECURITY_SQOS_PRESENT;
 184         switch (Connection->QOS->qos->ImpersonationType)
 185         {
 186             case RPC_C_IMP_LEVEL_DEFAULT:
 187                 /* FIXME: what to do here? */
 188                 break;
 189             case RPC_C_IMP_LEVEL_ANONYMOUS:
 190                 dwFlags |= SECURITY_ANONYMOUS;
 191                 break;
 192             case RPC_C_IMP_LEVEL_IDENTIFY:
 193                 dwFlags |= SECURITY_IDENTIFICATION;
 194                 break;
 195             case RPC_C_IMP_LEVEL_IMPERSONATE:
 196                 dwFlags |= SECURITY_IMPERSONATION;
 197                 break;
 198             case RPC_C_IMP_LEVEL_DELEGATE:
 199                 dwFlags |= SECURITY_DELEGATION;
 200                 break;
 201         }
 202         if (Connection->QOS->qos->IdentityTracking == RPC_C_QOS_IDENTIFY_DYNAMIC)
 203             dwFlags |= SECURITY_CONTEXT_TRACKING;
 204     }
 205     pipe = CreateFileA(pname, GENERIC_READ|GENERIC_WRITE, 0, NULL,
 206                        OPEN_EXISTING, dwFlags, 0);
 207     if (pipe != INVALID_HANDLE_VALUE) break;
 208     err = GetLastError();
 209     if (err == ERROR_PIPE_BUSY) {
 210       TRACE("connection failed, error=%x\n", err);
 211       return RPC_S_SERVER_TOO_BUSY;
 212     }
 213     if (!wait)
 214       return RPC_S_SERVER_UNAVAILABLE;
 215     if (!WaitNamedPipeA(pname, NMPWAIT_WAIT_FOREVER)) {
 216       err = GetLastError();
 217       WARN("connection failed, error=%x\n", err);
 218       return RPC_S_SERVER_UNAVAILABLE;
 219     }
 220   }
 221
 222   /* success */
 223   memset(&npc->ovl, 0, sizeof(npc->ovl));
 224   /* pipe is connected; change to message-read mode. */
 225   dwMode = PIPE_READMODE_MESSAGE;
 226   SetNamedPipeHandleState(pipe, &dwMode, NULL, NULL);
 227   npc->ovl.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
 228   npc->pipe = pipe;
 229
 230   return RPC_S_OK;
 231 }
 232
 233 static RPC_STATUS rpcrt4_ncalrpc_open(RpcConnection* Connection)
 234 {
 235   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 236   static const char prefix[] = "\\\\.\\pipe\\lrpc\\";
 237   RPC_STATUS r;
 238   LPSTR pname;
 239
 240   /* already connected? */
 241   if (npc->pipe)
 242     return RPC_S_OK;
 243
 244   /* protseq=ncalrpc: supposed to use NT LPC ports,
 245    * but we'll implement it with named pipes for now */
 246   pname = I_RpcAllocate(strlen(prefix) + strlen(Connection->Endpoint) + 1);
 247   strcat(strcpy(pname, prefix), Connection->Endpoint);
 248   r = rpcrt4_conn_open_pipe(Connection, pname, TRUE);
 249   I_RpcFree(pname);
 250
 251   return r;
 252 }
 253
 254 static RPC_STATUS rpcrt4_protseq_ncalrpc_open_endpoint(RpcServerProtseq* protseq, LPSTR endpoint)
 255 {
 256   static const char prefix[] = "\\\\.\\pipe\\lrpc\\";
 257   RPC_STATUS r;
 258   LPSTR pname;
 259   RpcConnection *Connection;
 260
 261   r = RPCRT4_CreateConnection(&Connection, TRUE, protseq->Protseq, NULL,
 262                               endpoint, NULL, NULL, NULL);
 263   if (r != RPC_S_OK)
 264       return r;
 265
 266   /* protseq=ncalrpc: supposed to use NT LPC ports,
 267    * but we'll implement it with named pipes for now */
 268   pname = I_RpcAllocate(strlen(prefix) + strlen(Connection->Endpoint) + 1);
 269   strcat(strcpy(pname, prefix), Connection->Endpoint);
 270   r = rpcrt4_conn_create_pipe(Connection, pname);
 271   I_RpcFree(pname);
 272
 273   EnterCriticalSection(&protseq->cs);
 274   Connection->Next = protseq->conn;
 275   protseq->conn = Connection;
 276   LeaveCriticalSection(&protseq->cs);
 277
 278   return r;
 279 }
 280
 281 static RPC_STATUS rpcrt4_ncacn_np_open(RpcConnection* Connection)
 282 {
 283   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 284   static const char prefix[] = "\\\\.";
 285   RPC_STATUS r;
 286   LPSTR pname;
 287
 288   /* already connected? */
 289   if (npc->pipe)
 290     return RPC_S_OK;
 291
 292   /* protseq=ncacn_np: named pipes */
 293   pname = I_RpcAllocate(strlen(prefix) + strlen(Connection->Endpoint) + 1);
 294   strcat(strcpy(pname, prefix), Connection->Endpoint);
 295   r = rpcrt4_conn_open_pipe(Connection, pname, FALSE);
 296   I_RpcFree(pname);
 297
 298   return r;
 299 }
 300
 301 static RPC_STATUS rpcrt4_protseq_ncacn_np_open_endpoint(RpcServerProtseq *protseq, LPSTR endpoint)
 302 {
 303   static const char prefix[] = "\\\\.";
 304   RPC_STATUS r;
 305   LPSTR pname;
 306   RpcConnection *Connection;
 307
 308   r = RPCRT4_CreateConnection(&Connection, TRUE, protseq->Protseq, NULL,
 309                               endpoint, NULL, NULL, NULL);
 310   if (r != RPC_S_OK)
 311     return r;
 312
 313   /* protseq=ncacn_np: named pipes */
 314   pname = I_RpcAllocate(strlen(prefix) + strlen(Connection->Endpoint) + 1);
 315   strcat(strcpy(pname, prefix), Connection->Endpoint);
 316   r = rpcrt4_conn_create_pipe(Connection, pname);
 317   I_RpcFree(pname);
 318
 319   EnterCriticalSection(&protseq->cs);
 320   Connection->Next = protseq->conn;
 321   protseq->conn = Connection;
 322   LeaveCriticalSection(&protseq->cs);
 323
 324   return r;
 325 }
 326
 327 static void rpcrt4_conn_np_handoff(RpcConnection_np *old_npc, RpcConnection_np *new_npc)
 328 {
 329   /* because of the way named pipes work, we'll transfer the connected pipe
 330    * to the child, then reopen the server binding to continue listening */
 331
 332   new_npc->pipe = old_npc->pipe;
 333   new_npc->ovl = old_npc->ovl;
 334   old_npc->pipe = 0;
 335   memset(&old_npc->ovl, 0, sizeof(old_npc->ovl));
 336   old_npc->listening = FALSE;
 337 }
 338
 339 static RPC_STATUS rpcrt4_ncacn_np_handoff(RpcConnection *old_conn, RpcConnection *new_conn)
 340 {
 341   RPC_STATUS status;
 342   LPSTR pname;
 343   static const char prefix[] = "\\\\.";
 344
 345   rpcrt4_conn_np_handoff((RpcConnection_np *)old_conn, (RpcConnection_np *)new_conn);
 346
 347   pname = I_RpcAllocate(strlen(prefix) + strlen(old_conn->Endpoint) + 1);
 348   strcat(strcpy(pname, prefix), old_conn->Endpoint);
 349   status = rpcrt4_conn_create_pipe(old_conn, pname);
 350   I_RpcFree(pname);
 351
 352   return status;
 353 }
 354
 355 static RPC_STATUS rpcrt4_ncalrpc_handoff(RpcConnection *old_conn, RpcConnection *new_conn)
 356 {
 357   RPC_STATUS status;
 358   LPSTR pname;
 359   static const char prefix[] = "\\\\.\\pipe\\lrpc\\";
 360
 361   TRACE("%s\n", old_conn->Endpoint);
 362
 363   rpcrt4_conn_np_handoff((RpcConnection_np *)old_conn, (RpcConnection_np *)new_conn);
 364
 365   pname = I_RpcAllocate(strlen(prefix) + strlen(old_conn->Endpoint) + 1);
 366   strcat(strcpy(pname, prefix), old_conn->Endpoint);
 367   status = rpcrt4_conn_create_pipe(old_conn, pname);
 368   I_RpcFree(pname);
 369
 370   return status;
 371 }
 372
 373 static int rpcrt4_conn_np_read(RpcConnection *Connection,
 374                         void *buffer, unsigned int count)
 375 {
 376   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 377   char *buf = buffer;
 378   BOOL ret = TRUE;
 379   unsigned int bytes_left = count;
 380
 381   while (bytes_left)
 382   {
 383     DWORD bytes_read;
 384     ret = ReadFile(npc->pipe, buf, bytes_left, &bytes_read, NULL);
 385     if (!ret || !bytes_read)
 386         break;
 387     bytes_left -= bytes_read;
 388     buf += bytes_read;
 389   }
 390   return ret ? count : -1;
 391 }
 392
 393 static int rpcrt4_conn_np_write(RpcConnection *Connection,
 394                              const void *buffer, unsigned int count)
 395 {
 396   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 397   const char *buf = buffer;
 398   BOOL ret = TRUE;
 399   unsigned int bytes_left = count;
 400
 401   while (bytes_left)
 402   {
 403     DWORD bytes_written;
 404     ret = WriteFile(npc->pipe, buf, bytes_left, &bytes_written, NULL);
 405     if (!ret || !bytes_written)
 406         break;
 407     bytes_left -= bytes_written;
 408     buf += bytes_written;
 409   }
 410   return ret ? count : -1;
 411 }
 412
 413 static int rpcrt4_conn_np_close(RpcConnection *Connection)
 414 {
 415   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 416   if (npc->pipe) {
 417     FlushFileBuffers(npc->pipe);
 418     CloseHandle(npc->pipe);
 419     npc->pipe = 0;
 420   }
 421   if (npc->ovl.hEvent) {
 422     CloseHandle(npc->ovl.hEvent);
 423     npc->ovl.hEvent = 0;
 424   }
 425   return 0;
 426 }
 427
 428 static void rpcrt4_conn_np_cancel_call(RpcConnection *Connection)
 429 {
 430     /* FIXME: implement when named pipe writes use overlapped I/O */
 431 }
 432
 433 static int rpcrt4_conn_np_wait_for_incoming_data(RpcConnection *Connection)
 434 {
 435     /* FIXME: implement when named pipe writes use overlapped I/O */
 436     return -1;
 437 }
 438
 439 static size_t rpcrt4_ncacn_np_get_top_of_tower(unsigned char *tower_data,
 440                                                const char *networkaddr,
 441                                                const char *endpoint)
 442 {
 443     twr_empty_floor_t *smb_floor;
 444     twr_empty_floor_t *nb_floor;
 445     size_t size;
 446     size_t networkaddr_size;
 447     size_t endpoint_size;
 448
 449     TRACE("(%p, %s, %s)\n", tower_data, networkaddr, endpoint);
 450
 451     networkaddr_size = networkaddr ? strlen(networkaddr) + 1 : 1;
 452     endpoint_size = endpoint ? strlen(endpoint) + 1 : 1;
 453     size = sizeof(*smb_floor) + endpoint_size + sizeof(*nb_floor) + networkaddr_size;
 454
 455     if (!tower_data)
 456         return size;
 457
 458     smb_floor = (twr_empty_floor_t *)tower_data;
 459
 460     tower_data += sizeof(*smb_floor);
 461
 462     smb_floor->count_lhs = sizeof(smb_floor->protid);
 463     smb_floor->protid = EPM_PROTOCOL_SMB;
 464     smb_floor->count_rhs = endpoint_size;
 465
 466     if (endpoint)
 467         memcpy(tower_data, endpoint, endpoint_size);
 468     else
 469         tower_data[0] = 0;
 470     tower_data += endpoint_size;
 471
 472     nb_floor = (twr_empty_floor_t *)tower_data;
 473
 474     tower_data += sizeof(*nb_floor);
 475
 476     nb_floor->count_lhs = sizeof(nb_floor->protid);
 477     nb_floor->protid = EPM_PROTOCOL_NETBIOS;
 478     nb_floor->count_rhs = networkaddr_size;
 479
 480     if (networkaddr)
 481         memcpy(tower_data, networkaddr, networkaddr_size);
 482     else
 483         tower_data[0] = 0;
 484     tower_data += networkaddr_size;
 485
 486     return size;
 487 }
 488
 489 static RPC_STATUS rpcrt4_ncacn_np_parse_top_of_tower(const unsigned char *tower_data,
 490                                                      size_t tower_size,
 491                                                      char **networkaddr,
 492                                                      char **endpoint)
 493 {
 494     const twr_empty_floor_t *smb_floor = (const twr_empty_floor_t *)tower_data;
 495     const twr_empty_floor_t *nb_floor;
 496
 497     TRACE("(%p, %d, %p, %p)\n", tower_data, (int)tower_size, networkaddr, endpoint);
 498
 499     if (tower_size < sizeof(*smb_floor))
 500         return EPT_S_NOT_REGISTERED;
 501
 502     tower_data += sizeof(*smb_floor);
 503     tower_size -= sizeof(*smb_floor);
 504
 505     if ((smb_floor->count_lhs != sizeof(smb_floor->protid)) ||
 506         (smb_floor->protid != EPM_PROTOCOL_SMB) ||
 507         (smb_floor->count_rhs > tower_size))
 508         return EPT_S_NOT_REGISTERED;
 509
 510     if (endpoint)
 511     {
 512         *endpoint = I_RpcAllocate(smb_floor->count_rhs);
 513         if (!*endpoint)
 514             return RPC_S_OUT_OF_RESOURCES;
 515         memcpy(*endpoint, tower_data, smb_floor->count_rhs);
 516     }
 517     tower_data += smb_floor->count_rhs;
 518     tower_size -= smb_floor->count_rhs;
 519
 520     if (tower_size < sizeof(*nb_floor))
 521         return EPT_S_NOT_REGISTERED;
 522
 523     nb_floor = (const twr_empty_floor_t *)tower_data;
 524
 525     tower_data += sizeof(*nb_floor);
 526     tower_size -= sizeof(*nb_floor);
 527
 528     if ((nb_floor->count_lhs != sizeof(nb_floor->protid)) ||
 529         (nb_floor->protid != EPM_PROTOCOL_NETBIOS) ||
 530         (nb_floor->count_rhs > tower_size))
 531         return EPT_S_NOT_REGISTERED;
 532
 533     if (networkaddr)
 534     {
 535         *networkaddr = I_RpcAllocate(nb_floor->count_rhs);
 536         if (!*networkaddr)
 537         {
 538             if (endpoint)
 539             {
 540                 I_RpcFree(*endpoint);
 541                 *endpoint = NULL;
 542             }
 543             return RPC_S_OUT_OF_RESOURCES;
 544         }
 545         memcpy(*networkaddr, tower_data, nb_floor->count_rhs);
 546     }
 547
 548     return RPC_S_OK;
 549 }
 550
 551 typedef struct _RpcServerProtseq_np
 552 {
 553     RpcServerProtseq common;
 554     HANDLE mgr_event;
 555 } RpcServerProtseq_np;
 556
 557 static RpcServerProtseq *rpcrt4_protseq_np_alloc(void)
 558 {
 559     RpcServerProtseq_np *ps = HeapAlloc(GetProcessHeap(), 0, sizeof(*ps));
 560     if (ps)
 561         ps->mgr_event = CreateEventW(NULL, FALSE, FALSE, NULL);
 562     return &ps->common;
 563 }
 564
 565 static void rpcrt4_protseq_np_signal_state_changed(RpcServerProtseq *protseq)
 566 {
 567     RpcServerProtseq_np *npps = CONTAINING_RECORD(protseq, RpcServerProtseq_np, common);
 568     SetEvent(npps->mgr_event);
 569 }
 570
 571 static void *rpcrt4_protseq_np_get_wait_array(RpcServerProtseq *protseq, void *prev_array, unsigned int *count)
 572 {
 573     HANDLE *objs = prev_array;
 574     RpcConnection_np *conn;
 575     RpcServerProtseq_np *npps = CONTAINING_RECORD(protseq, RpcServerProtseq_np, common);
 576
 577     EnterCriticalSection(&protseq->cs);
 578
 579     /* open and count connections */
 580     *count = 1;
 581     conn = CONTAINING_RECORD(protseq->conn, RpcConnection_np, common);
 582     while (conn) {
 583         rpcrt4_conn_listen_pipe(conn);
 584         if (conn->ovl.hEvent)
 585             (*count)++;
 586         conn = CONTAINING_RECORD(conn->common.Next, RpcConnection_np, common);
 587     }
 588
 589     /* make array of connections */
 590     if (objs)
 591         objs = HeapReAlloc(GetProcessHeap(), 0, objs, *count*sizeof(HANDLE));
 592     else
 593         objs = HeapAlloc(GetProcessHeap(), 0, *count*sizeof(HANDLE));
 594     if (!objs)
 595     {
 596         ERR("couldn't allocate objs\n");
 597         LeaveCriticalSection(&protseq->cs);
 598         return NULL;
 599     }
 600
 601     objs[0] = npps->mgr_event;
 602     *count = 1;
 603     conn = CONTAINING_RECORD(protseq->conn, RpcConnection_np, common);
 604     while (conn) {
 605         if ((objs[*count] = conn->ovl.hEvent))
 606             (*count)++;
 607         conn = CONTAINING_RECORD(conn->common.Next, RpcConnection_np, common);
 608     }
 609     LeaveCriticalSection(&protseq->cs);
 610     return objs;
 611 }
 612
 613 static void rpcrt4_protseq_np_free_wait_array(RpcServerProtseq *protseq, void *array)
 614 {
 615     HeapFree(GetProcessHeap(), 0, array);
 616 }
 617
 618 static int rpcrt4_protseq_np_wait_for_new_connection(RpcServerProtseq *protseq, unsigned int count, void *wait_array)
 619 {
 620     HANDLE b_handle;
 621     HANDLE *objs = wait_array;
 622     DWORD res;
 623     RpcConnection *cconn;
 624     RpcConnection_np *conn;
 625
 626     if (!objs)
 627         return -1;
 628
 629     do
 630     {
 631         /* an alertable wait isn't strictly necessary, but due to our
 632          * overlapped I/O implementation in Wine we need to free some memory
 633          * by the file user APC being called, even if no completion routine was
 634          * specified at the time of starting the async operation */
 635         res = WaitForMultipleObjectsEx(count, objs, FALSE, INFINITE, TRUE);
 636     } while (res == WAIT_IO_COMPLETION);
 637
 638     if (res == WAIT_OBJECT_0)
 639         return 0;
 640     else if (res == WAIT_FAILED)
 641     {
 642         ERR("wait failed with error %d\n", GetLastError());
 643         return -1;
 644     }
 645     else
 646     {
 647         b_handle = objs[res - WAIT_OBJECT_0];
 648         /* find which connection got a RPC */
 649         EnterCriticalSection(&protseq->cs);
 650         conn = CONTAINING_RECORD(protseq->conn, RpcConnection_np, common);
 651         while (conn) {
 652             if (b_handle == conn->ovl.hEvent) break;
 653             conn = CONTAINING_RECORD(conn->common.Next, RpcConnection_np, common);
 654         }
 655         cconn = NULL;
 656         if (conn)
 657             RPCRT4_SpawnConnection(&cconn, &conn->common);
 658         else
 659             ERR("failed to locate connection for handle %p\n", b_handle);
 660         LeaveCriticalSection(&protseq->cs);
 661         if (cconn)
 662         {
 663             RPCRT4_new_client(cconn);
 664             return 1;
 665         }
 666         else return -1;
 667     }
 668 }
 669
 670 static size_t rpcrt4_ncalrpc_get_top_of_tower(unsigned char *tower_data,
 671                                               const char *networkaddr,
 672                                               const char *endpoint)
 673 {
 674     twr_empty_floor_t *pipe_floor;
 675     size_t size;
 676     size_t endpoint_size;
 677
 678     TRACE("(%p, %s, %s)\n", tower_data, networkaddr, endpoint);
 679
 680     endpoint_size = strlen(networkaddr) + 1;
 681     size = sizeof(*pipe_floor) + endpoint_size;
 682
 683     if (!tower_data)
 684         return size;
 685
 686     pipe_floor = (twr_empty_floor_t *)tower_data;
 687
 688     tower_data += sizeof(*pipe_floor);
 689
 690     pipe_floor->count_lhs = sizeof(pipe_floor->protid);
 691     pipe_floor->protid = EPM_PROTOCOL_SMB;
 692     pipe_floor->count_rhs = endpoint_size;
 693
 694     memcpy(tower_data, endpoint, endpoint_size);
 695     tower_data += endpoint_size;
 696
 697     return size;
 698 }
 699
 700 static RPC_STATUS rpcrt4_ncalrpc_parse_top_of_tower(const unsigned char *tower_data,
 701                                                     size_t tower_size,
 702                                                     char **networkaddr,
 703                                                     char **endpoint)
 704 {
 705     const twr_empty_floor_t *pipe_floor = (const twr_empty_floor_t *)tower_data;
 706
 707     TRACE("(%p, %d, %p, %p)\n", tower_data, (int)tower_size, networkaddr, endpoint);
 708
 709     *networkaddr = NULL;
 710     *endpoint = NULL;
 711
 712     if (tower_size < sizeof(*pipe_floor))
 713         return EPT_S_NOT_REGISTERED;
 714
 715     tower_data += sizeof(*pipe_floor);
 716     tower_size -= sizeof(*pipe_floor);
 717
 718     if ((pipe_floor->count_lhs != sizeof(pipe_floor->protid)) ||
 719         (pipe_floor->protid != EPM_PROTOCOL_SMB) ||
 720         (pipe_floor->count_rhs > tower_size))
 721         return EPT_S_NOT_REGISTERED;
 722
 723     if (endpoint)
 724     {
 725         *endpoint = I_RpcAllocate(pipe_floor->count_rhs);
 726         if (!*endpoint)
 727             return RPC_S_OUT_OF_RESOURCES;
 728         memcpy(*endpoint, tower_data, pipe_floor->count_rhs);
 729     }
 730
 731     return RPC_S_OK;
 732 }
 733
 734 /**** ncacn_ip_tcp support ****/
 735
 736 typedef struct _RpcConnection_tcp
 737 {
 738   RpcConnection common;
 739   int sock;
 740   int cancel_fds[2];
 741 } RpcConnection_tcp;
 742
 743 static RpcConnection *rpcrt4_conn_tcp_alloc(void)
 744 {
 745   RpcConnection_tcp *tcpc;
 746   tcpc = HeapAlloc(GetProcessHeap(), 0, sizeof(RpcConnection_tcp));
 747   if (tcpc == NULL)
 748     return NULL;
 749   tcpc->sock = -1;
 750   if (socketpair(PF_UNIX, SOCK_STREAM, 0, tcpc->cancel_fds) < 0)
 751   {
 752     ERR("socketpair() failed: %s\n", strerror(errno));
 753     HeapFree(GetProcessHeap(), 0, tcpc);
 754     return NULL;
 755   }
 756   return &tcpc->common;
 757 }
 758
 759 static RPC_STATUS rpcrt4_ncacn_ip_tcp_open(RpcConnection* Connection)
 760 {
 761   RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
 762   int sock;
 763   int ret;
 764   struct addrinfo *ai;
 765   struct addrinfo *ai_cur;
 766   struct addrinfo hints;
 767
 768   TRACE("(%s, %s)\n", Connection->NetworkAddr, Connection->Endpoint);
 769
 770   if (tcpc->sock != -1)
 771     return RPC_S_OK;
 772
 773   hints.ai_flags          = 0;
 774   hints.ai_family         = PF_UNSPEC;
 775   hints.ai_socktype       = SOCK_STREAM;
 776   hints.ai_protocol       = IPPROTO_TCP;
 777   hints.ai_addrlen        = 0;
 778   hints.ai_addr           = NULL;
 779   hints.ai_canonname      = NULL;
 780   hints.ai_next           = NULL;
 781
 782   ret = getaddrinfo(Connection->NetworkAddr, Connection->Endpoint, &hints, &ai);
 783   if (ret)
 784   {
 785     ERR("getaddrinfo for %s:%s failed: %s\n", Connection->NetworkAddr,
 786       Connection->Endpoint, gai_strerror(ret));
 787     return RPC_S_SERVER_UNAVAILABLE;
 788   }
 789
 790   for (ai_cur = ai; ai_cur; ai_cur = ai_cur->ai_next)
 791   {
 792     int val;
 793
 794     if (TRACE_ON(rpc))
 795     {
 796       char host[256];
 797       char service[256];
 798       getnameinfo(ai_cur->ai_addr, ai_cur->ai_addrlen,
 799         host, sizeof(host), service, sizeof(service),
 800         NI_NUMERICHOST | NI_NUMERICSERV);
 801       TRACE("trying %s:%s\n", host, service);
 802     }
 803
 804     sock = socket(ai_cur->ai_family, ai_cur->ai_socktype, ai_cur->ai_protocol);
 805     if (sock == -1)
 806     {
 807       WARN("socket() failed: %s\n", strerror(errno));
 808       continue;
 809     }
 810
 811     if (0>connect(sock, ai_cur->ai_addr, ai_cur->ai_addrlen))
 812     {
 813       WARN("connect() failed: %s\n", strerror(errno));
 814       closesocket(sock);
 815       continue;
 816     }
 817
 818     /* RPC depends on having minimal latency so disable the Nagle algorithm */
 819     val = 1;
 820     setsockopt(sock, SOL_TCP, TCP_NODELAY, &val, sizeof(val));
 821     fcntl(sock, F_SETFL, O_NONBLOCK); /* make socket nonblocking */
 822
 823     tcpc->sock = sock;
 824
 825     freeaddrinfo(ai);
 826     TRACE("connected\n");
 827     return RPC_S_OK;
 828   }
 829
 830   freeaddrinfo(ai);
 831   ERR("couldn't connect to %s:%s\n", Connection->NetworkAddr, Connection->Endpoint);
 832   return RPC_S_SERVER_UNAVAILABLE;
 833 }
 834
 835 static RPC_STATUS rpcrt4_protseq_ncacn_ip_tcp_open_endpoint(RpcServerProtseq *protseq, LPSTR endpoint)
 836 {
 837     RPC_STATUS status = RPC_S_CANT_CREATE_ENDPOINT;
 838     int sock;
 839     int ret;
 840     struct addrinfo *ai;
 841     struct addrinfo *ai_cur;
 842     struct addrinfo hints;
 843     RpcConnection *first_connection = NULL;
 844
 845     TRACE("(%p, %s)\n", protseq, endpoint);
 846
 847     hints.ai_flags          = AI_PASSIVE /* for non-localhost addresses */;
 848     hints.ai_family         = PF_UNSPEC;
 849     hints.ai_socktype       = SOCK_STREAM;
 850     hints.ai_protocol       = IPPROTO_TCP;
 851     hints.ai_addrlen        = 0;
 852     hints.ai_addr           = NULL;
 853     hints.ai_canonname      = NULL;
 854     hints.ai_next           = NULL;
 855
 856     ret = getaddrinfo(NULL, endpoint, &hints, &ai);
 857     if (ret)
 858     {
 859         ERR("getaddrinfo for port %s failed: %s\n", endpoint,
 860             gai_strerror(ret));
 861         if ((ret == EAI_SERVICE) || (ret == EAI_NONAME))
 862             return RPC_S_INVALID_ENDPOINT_FORMAT;
 863         return RPC_S_CANT_CREATE_ENDPOINT;
 864     }
 865
 866     for (ai_cur = ai; ai_cur; ai_cur = ai_cur->ai_next)
 867     {
 868         RpcConnection_tcp *tcpc;
 869         RPC_STATUS create_status;
 870
 871         if (TRACE_ON(rpc))
 872         {
 873             char host[256];
 874             char service[256];
 875             getnameinfo(ai_cur->ai_addr, ai_cur->ai_addrlen,
 876                         host, sizeof(host), service, sizeof(service),
 877                         NI_NUMERICHOST | NI_NUMERICSERV);
 878             TRACE("trying %s:%s\n", host, service);
 879         }
 880
 881         sock = socket(ai_cur->ai_family, ai_cur->ai_socktype, ai_cur->ai_protocol);
 882         if (sock == -1)
 883         {
 884             WARN("socket() failed: %s\n", strerror(errno));
 885             status = RPC_S_CANT_CREATE_ENDPOINT;
 886             continue;
 887         }
 888
 889         ret = bind(sock, ai_cur->ai_addr, ai_cur->ai_addrlen);
 890         if (ret < 0)
 891         {
 892             WARN("bind failed: %s\n", strerror(errno));
 893             closesocket(sock);
 894             if (errno == EADDRINUSE)
 895               status = RPC_S_DUPLICATE_ENDPOINT;
 896             else
 897               status = RPC_S_CANT_CREATE_ENDPOINT;
 898             continue;
 899         }
 900         create_status = RPCRT4_CreateConnection((RpcConnection **)&tcpc, TRUE,
 901                                                 protseq->Protseq, NULL,
 902                                                 endpoint, NULL, NULL, NULL);
 903         if (create_status != RPC_S_OK)
 904         {
 905             closesocket(sock);
 906             status = create_status;
 907             continue;
 908         }
 909
 910         tcpc->sock = sock;
 911         ret = listen(sock, protseq->MaxCalls);
 912         if (ret < 0)
 913         {
 914             WARN("listen failed: %s\n", strerror(errno));
 915             RPCRT4_DestroyConnection(&tcpc->common);
 916             status = RPC_S_OUT_OF_RESOURCES;
 917             continue;
 918         }
 919         /* need a non-blocking socket, otherwise accept() has a potential
 920          * race-condition (poll() says it is readable, connection drops,
 921          * and accept() blocks until the next connection comes...)
 922          */
 923         ret = fcntl(sock, F_SETFL, O_NONBLOCK);
 924         if (ret < 0)
 925         {
 926             WARN("couldn't make socket non-blocking, error %d\n", ret);
 927             RPCRT4_DestroyConnection(&tcpc->common);
 928             status = RPC_S_OUT_OF_RESOURCES;
 929             continue;
 930         }
 931
 932         tcpc->common.Next = first_connection;
 933         first_connection = &tcpc->common;
 934     }
 935
 936     freeaddrinfo(ai);
 937
 938     /* if at least one connection was created for an endpoint then
 939      * return success */
 940     if (first_connection)
 941     {
 942         RpcConnection *conn;
 943
 944         /* find last element in list */
 945         for (conn = first_connection; conn->Next; conn = conn->Next)
 946             ;
 947
 948         EnterCriticalSection(&protseq->cs);
 949         conn->Next = protseq->conn;
 950         protseq->conn = first_connection;
 951         LeaveCriticalSection(&protseq->cs);
 952
 953         TRACE("listening on %s\n", endpoint);
 954         return RPC_S_OK;
 955     }
 956
 957     ERR("couldn't listen on port %s\n", endpoint);
 958     return status;
 959 }
 960
 961 static RPC_STATUS rpcrt4_conn_tcp_handoff(RpcConnection *old_conn, RpcConnection *new_conn)
 962 {
 963   int ret;
 964   struct sockaddr_in address;
 965   socklen_t addrsize;
 966   RpcConnection_tcp *server = (RpcConnection_tcp*) old_conn;
 967   RpcConnection_tcp *client = (RpcConnection_tcp*) new_conn;
 968
 969   addrsize = sizeof(address);
 970   ret = accept(server->sock, (struct sockaddr*) &address, &addrsize);
 971   if (ret < 0)
 972   {
 973     ERR("Failed to accept a TCP connection: error %d\n", ret);
 974     return RPC_S_OUT_OF_RESOURCES;
 975   }
 976   /* reset to blocking behaviour */
 977   fcntl(ret, F_SETFL, 0);
 978   client->sock = ret;
 979   TRACE("Accepted a new TCP connection\n");
 980   return RPC_S_OK;
 981 }
 982
 983 static int rpcrt4_conn_tcp_read(RpcConnection *Connection,
 984                                 void *buffer, unsigned int count)
 985 {
 986   RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
 987   int bytes_read = 0;
 988   do
 989   {
 990     int r = recv(tcpc->sock, (char *)buffer + bytes_read, count - bytes_read, 0);
 991     if (!r)
 992       return -1;
 993     else if (r > 0)
 994       bytes_read += r;
 995     else if (errno != EAGAIN)
 996     {
 997       WARN("recv() failed: %s\n", strerror(errno));
 998       return -1;
 999     }
1000     else
1001     {
1002       struct pollfd pfds[2];
1003       pfds[0].fd = tcpc->sock;
1004       pfds[0].events = POLLIN;
1005       pfds[1].fd = tcpc->cancel_fds[0];
1006       pfds[1].events = POLLIN;
1007       if (poll(pfds, 2, -1 /* infinite */) == -1 && errno != EINTR)
1008       {
1009         ERR("poll() failed: %s\n", strerror(errno));
1010         return -1;
1011       }
1012       if (pfds[1].revents & POLLIN) /* canceled */
1013       {
1014         char dummy;
1015         read(pfds[1].fd, &dummy, sizeof(dummy));
1016         return -1;
1017       }
1018     }
1019   } while (bytes_read != count);
1020   TRACE("%d %p %u -> %d\n", tcpc->sock, buffer, count, bytes_read);
1021   return bytes_read;
1022 }
1023
1024 static int rpcrt4_conn_tcp_write(RpcConnection *Connection,
1025                                  const void *buffer, unsigned int count)
1026 {
1027   RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
1028   int bytes_written = 0;
1029   do
1030   {
1031     int r = send(tcpc->sock, (const char *)buffer + bytes_written, count - bytes_written, 0);
1032     if (r >= 0)
1033       bytes_written += r;
1034     else if (errno != EAGAIN)
1035       return -1;
1036     else
1037     {
1038       struct pollfd pfd;
1039       pfd.fd = tcpc->sock;
1040       pfd.events = POLLOUT;
1041       if (poll(&pfd, 1, -1 /* infinite */) == -1 && errno != EINTR)
1042       {
1043         ERR("poll() failed: %s\n", strerror(errno));
1044         return -1;
1045       }
1046     }
1047   } while (bytes_written != count);
1048   TRACE("%d %p %u -> %d\n", tcpc->sock, buffer, count, bytes_written);
1049   return bytes_written;
1050 }
1051
1052 static int rpcrt4_conn_tcp_close(RpcConnection *Connection)
1053 {
1054   RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
1055
1056   TRACE("%d\n", tcpc->sock);
1057
1058   if (tcpc->sock != -1)
1059     closesocket(tcpc->sock);
1060   tcpc->sock = -1;
1061   close(tcpc->cancel_fds[0]);
1062   close(tcpc->cancel_fds[1]);
1063   return 0;
1064 }
1065
1066 static void rpcrt4_conn_tcp_cancel_call(RpcConnection *Connection)
1067 {
1068     RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
1069     char dummy = 1;
1070
1071     TRACE("%p\n", Connection);
1072
1073     write(tcpc->cancel_fds[1], &dummy, 1);
1074 }
1075
1076 static int rpcrt4_conn_tcp_wait_for_incoming_data(RpcConnection *Connection)
1077 {
1078     RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
1079     struct pollfd pfds[2];
1080
1081     TRACE("%p\n", Connection);
1082
1083     pfds[0].fd = tcpc->sock;
1084     pfds[0].events = POLLIN;
1085     pfds[1].fd = tcpc->cancel_fds[0];
1086     pfds[1].events = POLLIN;
1087     if (poll(pfds, 2, -1 /* infinite */) == -1 && errno != EINTR)
1088     {
1089       ERR("poll() failed: %s\n", strerror(errno));
1090       return -1;
1091     }
1092     if (pfds[1].revents & POLLIN) /* canceled */
1093     {
1094       char dummy;
1095       read(pfds[1].fd, &dummy, sizeof(dummy));
1096       return -1;
1097     }
1098
1099     return 0;
1100 }
1101
1102 static size_t rpcrt4_ncacn_ip_tcp_get_top_of_tower(unsigned char *tower_data,
1103                                                    const char *networkaddr,
1104                                                    const char *endpoint)
1105 {
1106     twr_tcp_floor_t *tcp_floor;
1107     twr_ipv4_floor_t *ipv4_floor;
1108     struct addrinfo *ai;
1109     struct addrinfo hints;
1110     int ret;
1111     size_t size = sizeof(*tcp_floor) + sizeof(*ipv4_floor);
1112
1113     TRACE("(%p, %s, %s)\n", tower_data, networkaddr, endpoint);
1114
1115     if (!tower_data)
1116         return size;
1117
1118     tcp_floor = (twr_tcp_floor_t *)tower_data;
1119     tower_data += sizeof(*tcp_floor);
1120
1121     ipv4_floor = (twr_ipv4_floor_t *)tower_data;
1122
1123     tcp_floor->count_lhs = sizeof(tcp_floor->protid);
1124     tcp_floor->protid = EPM_PROTOCOL_TCP;
1125     tcp_floor->count_rhs = sizeof(tcp_floor->port);
1126
1127     ipv4_floor->count_lhs = sizeof(ipv4_floor->protid);
1128     ipv4_floor->protid = EPM_PROTOCOL_IP;
1129     ipv4_floor->count_rhs = sizeof(ipv4_floor->ipv4addr);
1130
1131     hints.ai_flags          = AI_NUMERICHOST;
1132     /* FIXME: only support IPv4 at the moment. how is IPv6 represented by the EPM? */
1133     hints.ai_family         = PF_INET;
1134     hints.ai_socktype       = SOCK_STREAM;
1135     hints.ai_protocol       = IPPROTO_TCP;
1136     hints.ai_addrlen        = 0;
1137     hints.ai_addr           = NULL;
1138     hints.ai_canonname      = NULL;
1139     hints.ai_next           = NULL;
1140
1141     ret = getaddrinfo(networkaddr, endpoint, &hints, &ai);
1142     if (ret)
1143     {
1144         ret = getaddrinfo("0.0.0.0", endpoint, &hints, &ai);
1145         if (ret)
1146         {
1147             ERR("getaddrinfo failed: %s\n", gai_strerror(ret));
1148             return 0;
1149         }
1150     }
1151
1152     if (ai->ai_family == PF_INET)
1153     {
1154         const struct sockaddr_in *sin = (const struct sockaddr_in *)ai->ai_addr;
1155         tcp_floor->port = sin->sin_port;
1156         ipv4_floor->ipv4addr = sin->sin_addr.s_addr;
1157     }
1158     else
1159     {
1160         ERR("unexpected protocol family %d\n", ai->ai_family);
1161         return 0;
1162     }
1163
1164     freeaddrinfo(ai);
1165
1166     return size;
1167 }
1168
1169 static RPC_STATUS rpcrt4_ncacn_ip_tcp_parse_top_of_tower(const unsigned char *tower_data,
1170                                                          size_t tower_size,
1171                                                          char **networkaddr,
1172                                                          char **endpoint)
1173 {
1174     const twr_tcp_floor_t *tcp_floor = (const twr_tcp_floor_t *)tower_data;
1175     const twr_ipv4_floor_t *ipv4_floor;
1176     struct in_addr in_addr;
1177
1178     TRACE("(%p, %d, %p, %p)\n", tower_data, (int)tower_size, networkaddr, endpoint);
1179
1180     if (tower_size < sizeof(*tcp_floor))
1181         return EPT_S_NOT_REGISTERED;
1182
1183     tower_data += sizeof(*tcp_floor);
1184     tower_size -= sizeof(*tcp_floor);
1185
1186     if (tower_size < sizeof(*ipv4_floor))
1187         return EPT_S_NOT_REGISTERED;
1188
1189     ipv4_floor = (const twr_ipv4_floor_t *)tower_data;
1190
1191     if ((tcp_floor->count_lhs != sizeof(tcp_floor->protid)) ||
1192         (tcp_floor->protid != EPM_PROTOCOL_TCP) ||
1193         (tcp_floor->count_rhs != sizeof(tcp_floor->port)) ||
1194         (ipv4_floor->count_lhs != sizeof(ipv4_floor->protid)) ||
1195         (ipv4_floor->protid != EPM_PROTOCOL_IP) ||
1196         (ipv4_floor->count_rhs != sizeof(ipv4_floor->ipv4addr)))
1197         return EPT_S_NOT_REGISTERED;
1198
1199     if (endpoint)
1200     {
1201         *endpoint = I_RpcAllocate(6 /* sizeof("65535") + 1 */);
1202         if (!*endpoint)
1203             return RPC_S_OUT_OF_RESOURCES;
1204         sprintf(*endpoint, "%u", ntohs(tcp_floor->port));
1205     }
1206
1207     if (networkaddr)
1208     {
1209         *networkaddr = I_RpcAllocate(INET_ADDRSTRLEN);
1210         if (!*networkaddr)
1211         {
1212             if (endpoint)
1213             {
1214                 I_RpcFree(*endpoint);
1215                 *endpoint = NULL;
1216             }
1217             return RPC_S_OUT_OF_RESOURCES;
1218         }
1219         in_addr.s_addr = ipv4_floor->ipv4addr;
1220         if (!inet_ntop(AF_INET, &in_addr, *networkaddr, INET_ADDRSTRLEN))
1221         {
1222             ERR("inet_ntop: %s\n", strerror(errno));
1223             I_RpcFree(*networkaddr);
1224             *networkaddr = NULL;
1225             if (endpoint)
1226             {
1227                 I_RpcFree(*endpoint);
1228                 *endpoint = NULL;
1229             }
1230             return EPT_S_NOT_REGISTERED;
1231         }
1232     }
1233
1234     return RPC_S_OK;
1235 }
1236
1237 typedef struct _RpcServerProtseq_sock
1238 {
1239     RpcServerProtseq common;
1240     int mgr_event_rcv;
1241     int mgr_event_snd;
1242 } RpcServerProtseq_sock;
1243
1244 static RpcServerProtseq *rpcrt4_protseq_sock_alloc(void)
1245 {
1246     RpcServerProtseq_sock *ps = HeapAlloc(GetProcessHeap(), 0, sizeof(*ps));
1247     if (ps)
1248     {
1249         int fds[2];
1250         if (!socketpair(PF_UNIX, SOCK_DGRAM, 0, fds))
1251         {
1252             fcntl(fds[0], F_SETFL, O_NONBLOCK);
1253             fcntl(fds[1], F_SETFL, O_NONBLOCK);
1254             ps->mgr_event_rcv = fds[0];
1255             ps->mgr_event_snd = fds[1];
1256         }
1257         else
1258         {
1259             ERR("socketpair failed with error %s\n", strerror(errno));
1260             HeapFree(GetProcessHeap(), 0, ps);
1261             return NULL;
1262         }
1263     }
1264     return &ps->common;
1265 }
1266
1267 static void rpcrt4_protseq_sock_signal_state_changed(RpcServerProtseq *protseq)
1268 {
1269     RpcServerProtseq_sock *sockps = CONTAINING_RECORD(protseq, RpcServerProtseq_sock, common);
1270     char dummy = 1;
1271     write(sockps->mgr_event_snd, &dummy, sizeof(dummy));
1272 }
1273
1274 static void *rpcrt4_protseq_sock_get_wait_array(RpcServerProtseq *protseq, void *prev_array, unsigned int *count)
1275 {
1276     struct pollfd *poll_info = prev_array;
1277     RpcConnection_tcp *conn;
1278     RpcServerProtseq_sock *sockps = CONTAINING_RECORD(protseq, RpcServerProtseq_sock, common);
1279
1280     EnterCriticalSection(&protseq->cs);
1281
1282     /* open and count connections */
1283     *count = 1;
1284     conn = (RpcConnection_tcp *)protseq->conn;
1285     while (conn) {
1286         if (conn->sock != -1)
1287             (*count)++;
1288         conn = (RpcConnection_tcp *)conn->common.Next;
1289     }
1290
1291     /* make array of connections */
1292     if (poll_info)
1293         poll_info = HeapReAlloc(GetProcessHeap(), 0, poll_info, *count*sizeof(*poll_info));
1294     else
1295         poll_info = HeapAlloc(GetProcessHeap(), 0, *count*sizeof(*poll_info));
1296     if (!poll_info)
1297     {
1298         ERR("couldn't allocate poll_info\n");
1299         LeaveCriticalSection(&protseq->cs);
1300         return NULL;
1301     }
1302
1303     poll_info[0].fd = sockps->mgr_event_rcv;
1304     poll_info[0].events = POLLIN;
1305     *count = 1;
1306     conn =  CONTAINING_RECORD(protseq->conn, RpcConnection_tcp, common);
1307     while (conn) {
1308         if (conn->sock != -1)
1309         {
1310             poll_info[*count].fd = conn->sock;
1311             poll_info[*count].events = POLLIN;
1312             (*count)++;
1313         }
1314         conn = CONTAINING_RECORD(conn->common.Next, RpcConnection_tcp, common);
1315     }
1316     LeaveCriticalSection(&protseq->cs);
1317     return poll_info;
1318 }
1319
1320 static void rpcrt4_protseq_sock_free_wait_array(RpcServerProtseq *protseq, void *array)
1321 {
1322     HeapFree(GetProcessHeap(), 0, array);
1323 }
1324
1325 static int rpcrt4_protseq_sock_wait_for_new_connection(RpcServerProtseq *protseq, unsigned int count, void *wait_array)
1326 {
1327     struct pollfd *poll_info = wait_array;
1328     int ret, i;
1329     RpcConnection *cconn;
1330     RpcConnection_tcp *conn;
1331
1332     if (!poll_info)
1333         return -1;
1334
1335     ret = poll(poll_info, count, -1);
1336     if (ret < 0)
1337     {
1338         ERR("poll failed with error %d\n", ret);
1339         return -1;
1340     }
1341
1342     for (i = 0; i < count; i++)
1343         if (poll_info[i].revents & POLLIN)
1344         {
1345             /* RPC server event */
1346             if (i == 0)
1347             {
1348                 char dummy;
1349                 read(poll_info[0].fd, &dummy, sizeof(dummy));
1350                 return 0;
1351             }
1352
1353             /* find which connection got a RPC */
1354             EnterCriticalSection(&protseq->cs);
1355             conn = CONTAINING_RECORD(protseq->conn, RpcConnection_tcp, common);
1356             while (conn) {
1357                 if (poll_info[i].fd == conn->sock) break;
1358                 conn = CONTAINING_RECORD(conn->common.Next, RpcConnection_tcp, common);
1359             }
1360             cconn = NULL;
1361             if (conn)
1362                 RPCRT4_SpawnConnection(&cconn, &conn->common);
1363             else
1364                 ERR("failed to locate connection for fd %d\n", poll_info[i].fd);
1365             LeaveCriticalSection(&protseq->cs);
1366             if (cconn)
1367                 RPCRT4_new_client(cconn);
1368             else
1369                 return -1;
1370         }
1371
1372     return 1;
1373 }
1374
1375 static const struct connection_ops conn_protseq_list[] = {
1376   { "ncacn_np",
1377     { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_SMB },
1378     rpcrt4_conn_np_alloc,
1379     rpcrt4_ncacn_np_open,
1380     rpcrt4_ncacn_np_handoff,
1381     rpcrt4_conn_np_read,
1382     rpcrt4_conn_np_write,
1383     rpcrt4_conn_np_close,
1384     rpcrt4_conn_np_cancel_call,
1385     rpcrt4_conn_np_wait_for_incoming_data,
1386     rpcrt4_ncacn_np_get_top_of_tower,
1387     rpcrt4_ncacn_np_parse_top_of_tower,
1388   },
1389   { "ncalrpc",
1390     { EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_PIPE },
1391     rpcrt4_conn_np_alloc,
1392     rpcrt4_ncalrpc_open,
1393     rpcrt4_ncalrpc_handoff,
1394     rpcrt4_conn_np_read,
1395     rpcrt4_conn_np_write,
1396     rpcrt4_conn_np_close,
1397     rpcrt4_conn_np_cancel_call,
1398     rpcrt4_conn_np_wait_for_incoming_data,
1399     rpcrt4_ncalrpc_get_top_of_tower,
1400     rpcrt4_ncalrpc_parse_top_of_tower,
1401   },
1402   { "ncacn_ip_tcp",
1403     { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_TCP },
1404     rpcrt4_conn_tcp_alloc,
1405     rpcrt4_ncacn_ip_tcp_open,
1406     rpcrt4_conn_tcp_handoff,
1407     rpcrt4_conn_tcp_read,
1408     rpcrt4_conn_tcp_write,
1409     rpcrt4_conn_tcp_close,
1410     rpcrt4_conn_tcp_cancel_call,
1411     rpcrt4_conn_tcp_wait_for_incoming_data,
1412     rpcrt4_ncacn_ip_tcp_get_top_of_tower,
1413     rpcrt4_ncacn_ip_tcp_parse_top_of_tower,
1414   }
1415 };
1416
1417
1418 static const struct protseq_ops protseq_list[] =
1419 {
1420     {
1421         "ncacn_np",
1422         rpcrt4_protseq_np_alloc,
1423         rpcrt4_protseq_np_signal_state_changed,
1424         rpcrt4_protseq_np_get_wait_array,
1425         rpcrt4_protseq_np_free_wait_array,
1426         rpcrt4_protseq_np_wait_for_new_connection,
1427         rpcrt4_protseq_ncacn_np_open_endpoint,
1428     },
1429     {
1430         "ncalrpc",
1431         rpcrt4_protseq_np_alloc,
1432         rpcrt4_protseq_np_signal_state_changed,
1433         rpcrt4_protseq_np_get_wait_array,
1434         rpcrt4_protseq_np_free_wait_array,
1435         rpcrt4_protseq_np_wait_for_new_connection,
1436         rpcrt4_protseq_ncalrpc_open_endpoint,
1437     },
1438     {
1439         "ncacn_ip_tcp",
1440         rpcrt4_protseq_sock_alloc,
1441         rpcrt4_protseq_sock_signal_state_changed,
1442         rpcrt4_protseq_sock_get_wait_array,
1443         rpcrt4_protseq_sock_free_wait_array,
1444         rpcrt4_protseq_sock_wait_for_new_connection,
1445         rpcrt4_protseq_ncacn_ip_tcp_open_endpoint,
1446     },
1447 };
1448
1449 #define ARRAYSIZE(a) (sizeof((a)) / sizeof((a)[0]))
1450
1451 const struct protseq_ops *rpcrt4_get_protseq_ops(const char *protseq)
1452 {
1453   int i;
1454   for(i=0; i<ARRAYSIZE(protseq_list); i++)
1455     if (!strcmp(protseq_list[i].name, protseq))
1456       return &protseq_list[i];
1457   return NULL;
1458 }
1459
1460 static const struct connection_ops *rpcrt4_get_conn_protseq_ops(const char *protseq)
1461 {
1462     int i;
1463     for(i=0; i<ARRAYSIZE(conn_protseq_list); i++)
1464         if (!strcmp(conn_protseq_list[i].name, protseq))
1465             return &conn_protseq_list[i];
1466     return NULL;
1467 }
1468
1469 /**** interface to rest of code ****/
1470
1471 RPC_STATUS RPCRT4_OpenClientConnection(RpcConnection* Connection)
1472 {
1473   TRACE("(Connection == ^%p)\n", Connection);
1474
1475   assert(!Connection->server);
1476   return Connection->ops->open_connection_client(Connection);
1477 }
1478
1479 RPC_STATUS RPCRT4_CloseConnection(RpcConnection* Connection)
1480 {
1481   TRACE("(Connection == ^%p)\n", Connection);
1482   if (SecIsValidHandle(&Connection->ctx))
1483   {
1484     DeleteSecurityContext(&Connection->ctx);
1485     SecInvalidateHandle(&Connection->ctx);
1486   }
1487   rpcrt4_conn_close(Connection);
1488   return RPC_S_OK;
1489 }
1490
1491 RPC_STATUS RPCRT4_CreateConnection(RpcConnection** Connection, BOOL server,
1492     LPCSTR Protseq, LPCSTR NetworkAddr, LPCSTR Endpoint,
1493     LPCWSTR NetworkOptions, RpcAuthInfo* AuthInfo, RpcQualityOfService *QOS)
1494 {
1495   const struct connection_ops *ops;
1496   RpcConnection* NewConnection;
1497
1498   ops = rpcrt4_get_conn_protseq_ops(Protseq);
1499   if (!ops)
1500   {
1501     FIXME("not supported for protseq %s\n", Protseq);
1502     return RPC_S_PROTSEQ_NOT_SUPPORTED;
1503   }
1504
1505   NewConnection = ops->alloc();
1506   NewConnection->Next = NULL;
1507   NewConnection->server_binding = NULL;
1508   NewConnection->server = server;
1509   NewConnection->ops = ops;
1510   NewConnection->NetworkAddr = RPCRT4_strdupA(NetworkAddr);
1511   NewConnection->Endpoint = RPCRT4_strdupA(Endpoint);
1512   NewConnection->NetworkOptions = RPCRT4_strdupW(NetworkOptions);
1513   NewConnection->MaxTransmissionSize = RPC_MAX_PACKET_SIZE;
1514   memset(&NewConnection->ActiveInterface, 0, sizeof(NewConnection->ActiveInterface));
1515   NewConnection->NextCallId = 1;
1516
1517   SecInvalidateHandle(&NewConnection->ctx);
1518   memset(&NewConnection->exp, 0, sizeof(NewConnection->exp));
1519   NewConnection->attr = 0;
1520   if (AuthInfo) RpcAuthInfo_AddRef(AuthInfo);
1521   NewConnection->AuthInfo = AuthInfo;
1522   NewConnection->encryption_auth_len = 0;
1523   NewConnection->signature_auth_len = 0;
1524   if (QOS) RpcQualityOfService_AddRef(QOS);
1525   NewConnection->QOS = QOS;
1526
1527   list_init(&NewConnection->conn_pool_entry);
1528   NewConnection->async_state = NULL;
1529
1530   TRACE("connection: %p\n", NewConnection);
1531   *Connection = NewConnection;
1532
1533   return RPC_S_OK;
1534 }
1535
1536
1537 RPC_STATUS RPCRT4_SpawnConnection(RpcConnection** Connection, RpcConnection* OldConnection)
1538 {
1539   RPC_STATUS err;
1540
1541   err = RPCRT4_CreateConnection(Connection, OldConnection->server,
1542                                 rpcrt4_conn_get_name(OldConnection),
1543                                 OldConnection->NetworkAddr,
1544                                 OldConnection->Endpoint, NULL,
1545                                 OldConnection->AuthInfo, OldConnection->QOS);
1546   if (err == RPC_S_OK)
1547     rpcrt4_conn_handoff(OldConnection, *Connection);
1548   return err;
1549 }
1550
1551 RPC_STATUS RPCRT4_DestroyConnection(RpcConnection* Connection)
1552 {
1553   TRACE("connection: %p\n", Connection);
1554
1555   RPCRT4_CloseConnection(Connection);
1556   RPCRT4_strfree(Connection->Endpoint);
1557   RPCRT4_strfree(Connection->NetworkAddr);
1558   HeapFree(GetProcessHeap(), 0, Connection->NetworkOptions);
1559   if (Connection->AuthInfo) RpcAuthInfo_Release(Connection->AuthInfo);
1560   if (Connection->QOS) RpcQualityOfService_Release(Connection->QOS);
1561
1562   /* server-only */
1563   if (Connection->server_binding) RPCRT4_ReleaseBinding(Connection->server_binding);
1564
1565   HeapFree(GetProcessHeap(), 0, Connection);
1566   return RPC_S_OK;
1567 }
1568
1569 RPC_STATUS RpcTransport_GetTopOfTower(unsigned char *tower_data,
1570                                       size_t *tower_size,
1571                                       const char *protseq,
1572                                       const char *networkaddr,
1573                                       const char *endpoint)
1574 {
1575     twr_empty_floor_t *protocol_floor;
1576     const struct connection_ops *protseq_ops = rpcrt4_get_conn_protseq_ops(protseq);
1577
1578     *tower_size = 0;
1579
1580     if (!protseq_ops)
1581         return RPC_S_INVALID_RPC_PROTSEQ;
1582
1583     if (!tower_data)
1584     {
1585         *tower_size = sizeof(*protocol_floor);
1586         *tower_size += protseq_ops->get_top_of_tower(NULL, networkaddr, endpoint);
1587         return RPC_S_OK;
1588     }
1589
1590     protocol_floor = (twr_empty_floor_t *)tower_data;
1591     protocol_floor->count_lhs = sizeof(protocol_floor->protid);
1592     protocol_floor->protid = protseq_ops->epm_protocols[0];
1593     protocol_floor->count_rhs = 0;
1594
1595     tower_data += sizeof(*protocol_floor);
1596
1597     *tower_size = protseq_ops->get_top_of_tower(tower_data, networkaddr, endpoint);
1598     if (!*tower_size)
1599         return EPT_S_NOT_REGISTERED;
1600
1601     *tower_size += sizeof(*protocol_floor);
1602
1603     return RPC_S_OK;
1604 }
1605
1606 RPC_STATUS RpcTransport_ParseTopOfTower(const unsigned char *tower_data,
1607                                         size_t tower_size,
1608                                         char **protseq,
1609                                         char **networkaddr,
1610                                         char **endpoint)
1611 {
1612     const twr_empty_floor_t *protocol_floor;
1613     const twr_empty_floor_t *floor4;
1614     const struct connection_ops *protseq_ops = NULL;
1615     RPC_STATUS status;
1616     int i;
1617
1618     if (tower_size < sizeof(*protocol_floor))
1619         return EPT_S_NOT_REGISTERED;
1620
1621     protocol_floor = (const twr_empty_floor_t *)tower_data;
1622     tower_data += sizeof(*protocol_floor);
1623     tower_size -= sizeof(*protocol_floor);
1624     if ((protocol_floor->count_lhs != sizeof(protocol_floor->protid)) ||
1625         (protocol_floor->count_rhs > tower_size))
1626         return EPT_S_NOT_REGISTERED;
1627     tower_data += protocol_floor->count_rhs;
1628     tower_size -= protocol_floor->count_rhs;
1629
1630     floor4 = (const twr_empty_floor_t *)tower_data;
1631     if ((tower_size < sizeof(*floor4)) ||
1632         (floor4->count_lhs != sizeof(floor4->protid)))
1633         return EPT_S_NOT_REGISTERED;
1634
1635     for(i = 0; i < ARRAYSIZE(conn_protseq_list); i++)
1636         if ((protocol_floor->protid == conn_protseq_list[i].epm_protocols[0]) &&
1637             (floor4->protid == conn_protseq_list[i].epm_protocols[1]))
1638         {
1639             protseq_ops = &conn_protseq_list[i];
1640             break;
1641         }
1642
1643     if (!protseq_ops)
1644         return EPT_S_NOT_REGISTERED;
1645
1646     status = protseq_ops->parse_top_of_tower(tower_data, tower_size, networkaddr, endpoint);
1647
1648     if ((status == RPC_S_OK) && protseq)
1649     {
1650         *protseq = I_RpcAllocate(strlen(protseq_ops->name) + 1);
1651         strcpy(*protseq, protseq_ops->name);
1652     }
1653
1654     return status;
1655 }
1656
1657 /***********************************************************************
1658  *             RpcNetworkIsProtseqValidW (RPCRT4.@)
1659  *
1660  * Checks if the given protocol sequence is known by the RPC system.
1661  * If it is, returns RPC_S_OK, otherwise RPC_S_PROTSEQ_NOT_SUPPORTED.
1662  *
1663  */
1664 RPC_STATUS WINAPI RpcNetworkIsProtseqValidW(RPC_WSTR protseq)
1665 {
1666   char ps[0x10];
1667
1668   WideCharToMultiByte(CP_ACP, 0, protseq, -1,
1669                       ps, sizeof ps, NULL, NULL);
1670   if (rpcrt4_get_conn_protseq_ops(ps))
1671     return RPC_S_OK;
1672
1673   FIXME("Unknown protseq %s\n", debugstr_w(protseq));
1674
1675   return RPC_S_INVALID_RPC_PROTSEQ;
1676 }
1677
1678 /***********************************************************************
1679  *             RpcNetworkIsProtseqValidA (RPCRT4.@)
1680  */
1681 RPC_STATUS WINAPI RpcNetworkIsProtseqValidA(RPC_CSTR protseq)
1682 {
1683   UNICODE_STRING protseqW;
1684
1685   if (RtlCreateUnicodeStringFromAsciiz(&protseqW, (char*)protseq))
1686   {
1687     RPC_STATUS ret = RpcNetworkIsProtseqValidW(protseqW.Buffer);
1688     RtlFreeUnicodeString(&protseqW);
1689     return ret;
1690   }
1691   return RPC_S_OUT_OF_MEMORY;
1692 }