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 || !WaitNamedPipeA(pname, NMPWAIT_WAIT_FOREVER)) {
 214       err = GetLastError();
 215       WARN("connection failed, error=%x\n", err);
 216       return RPC_S_SERVER_UNAVAILABLE;
 217     }
 218   }
 219
 220   /* success */
 221   memset(&npc->ovl, 0, sizeof(npc->ovl));
 222   /* pipe is connected; change to message-read mode. */
 223   dwMode = PIPE_READMODE_MESSAGE;
 224   SetNamedPipeHandleState(pipe, &dwMode, NULL, NULL);
 225   npc->ovl.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
 226   npc->pipe = pipe;
 227
 228   return RPC_S_OK;
 229 }
 230
 231 static RPC_STATUS rpcrt4_ncalrpc_open(RpcConnection* Connection)
 232 {
 233   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 234   static const char prefix[] = "\\\\.\\pipe\\lrpc\\";
 235   RPC_STATUS r;
 236   LPSTR pname;
 237
 238   /* already connected? */
 239   if (npc->pipe)
 240     return RPC_S_OK;
 241
 242   /* protseq=ncalrpc: supposed to use NT LPC ports,
 243    * but we'll implement it with named pipes for now */
 244   pname = I_RpcAllocate(strlen(prefix) + strlen(Connection->Endpoint) + 1);
 245   strcat(strcpy(pname, prefix), Connection->Endpoint);
 246   r = rpcrt4_conn_open_pipe(Connection, pname, TRUE);
 247   I_RpcFree(pname);
 248
 249   return r;
 250 }
 251
 252 static RPC_STATUS rpcrt4_protseq_ncalrpc_open_endpoint(RpcServerProtseq* protseq, LPSTR endpoint)
 253 {
 254   static const char prefix[] = "\\\\.\\pipe\\lrpc\\";
 255   RPC_STATUS r;
 256   LPSTR pname;
 257   RpcConnection *Connection;
 258
 259   r = RPCRT4_CreateConnection(&Connection, TRUE, protseq->Protseq, NULL,
 260                               endpoint, NULL, NULL, NULL);
 261   if (r != RPC_S_OK)
 262       return r;
 263
 264   /* protseq=ncalrpc: supposed to use NT LPC ports,
 265    * but we'll implement it with named pipes for now */
 266   pname = I_RpcAllocate(strlen(prefix) + strlen(Connection->Endpoint) + 1);
 267   strcat(strcpy(pname, prefix), Connection->Endpoint);
 268   r = rpcrt4_conn_create_pipe(Connection, pname);
 269   I_RpcFree(pname);
 270
 271   EnterCriticalSection(&protseq->cs);
 272   Connection->Next = protseq->conn;
 273   protseq->conn = Connection;
 274   LeaveCriticalSection(&protseq->cs);
 275
 276   return r;
 277 }
 278
 279 static RPC_STATUS rpcrt4_ncacn_np_open(RpcConnection* Connection)
 280 {
 281   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 282   static const char prefix[] = "\\\\.";
 283   RPC_STATUS r;
 284   LPSTR pname;
 285
 286   /* already connected? */
 287   if (npc->pipe)
 288     return RPC_S_OK;
 289
 290   /* protseq=ncacn_np: named pipes */
 291   pname = I_RpcAllocate(strlen(prefix) + strlen(Connection->Endpoint) + 1);
 292   strcat(strcpy(pname, prefix), Connection->Endpoint);
 293   r = rpcrt4_conn_open_pipe(Connection, pname, FALSE);
 294   I_RpcFree(pname);
 295
 296   return r;
 297 }
 298
 299 static RPC_STATUS rpcrt4_protseq_ncacn_np_open_endpoint(RpcServerProtseq *protseq, LPSTR endpoint)
 300 {
 301   static const char prefix[] = "\\\\.";
 302   RPC_STATUS r;
 303   LPSTR pname;
 304   RpcConnection *Connection;
 305
 306   r = RPCRT4_CreateConnection(&Connection, TRUE, protseq->Protseq, NULL,
 307                               endpoint, NULL, NULL, NULL);
 308   if (r != RPC_S_OK)
 309     return r;
 310
 311   /* protseq=ncacn_np: named pipes */
 312   pname = I_RpcAllocate(strlen(prefix) + strlen(Connection->Endpoint) + 1);
 313   strcat(strcpy(pname, prefix), Connection->Endpoint);
 314   r = rpcrt4_conn_create_pipe(Connection, pname);
 315   I_RpcFree(pname);
 316
 317   EnterCriticalSection(&protseq->cs);
 318   Connection->Next = protseq->conn;
 319   protseq->conn = Connection;
 320   LeaveCriticalSection(&protseq->cs);
 321
 322   return r;
 323 }
 324
 325 static void rpcrt4_conn_np_handoff(RpcConnection_np *old_npc, RpcConnection_np *new_npc)
 326 {
 327   /* because of the way named pipes work, we'll transfer the connected pipe
 328    * to the child, then reopen the server binding to continue listening */
 329
 330   new_npc->pipe = old_npc->pipe;
 331   new_npc->ovl = old_npc->ovl;
 332   old_npc->pipe = 0;
 333   memset(&old_npc->ovl, 0, sizeof(old_npc->ovl));
 334   old_npc->listening = FALSE;
 335 }
 336
 337 static RPC_STATUS rpcrt4_ncacn_np_handoff(RpcConnection *old_conn, RpcConnection *new_conn)
 338 {
 339   RPC_STATUS status;
 340   LPSTR pname;
 341   static const char prefix[] = "\\\\.";
 342
 343   rpcrt4_conn_np_handoff((RpcConnection_np *)old_conn, (RpcConnection_np *)new_conn);
 344
 345   pname = I_RpcAllocate(strlen(prefix) + strlen(old_conn->Endpoint) + 1);
 346   strcat(strcpy(pname, prefix), old_conn->Endpoint);
 347   status = rpcrt4_conn_create_pipe(old_conn, pname);
 348   I_RpcFree(pname);
 349
 350   return status;
 351 }
 352
 353 static RPC_STATUS rpcrt4_ncalrpc_handoff(RpcConnection *old_conn, RpcConnection *new_conn)
 354 {
 355   RPC_STATUS status;
 356   LPSTR pname;
 357   static const char prefix[] = "\\\\.\\pipe\\lrpc\\";
 358
 359   TRACE("%s\n", old_conn->Endpoint);
 360
 361   rpcrt4_conn_np_handoff((RpcConnection_np *)old_conn, (RpcConnection_np *)new_conn);
 362
 363   pname = I_RpcAllocate(strlen(prefix) + strlen(old_conn->Endpoint) + 1);
 364   strcat(strcpy(pname, prefix), old_conn->Endpoint);
 365   status = rpcrt4_conn_create_pipe(old_conn, pname);
 366   I_RpcFree(pname);
 367
 368   return status;
 369 }
 370
 371 static int rpcrt4_conn_np_read(RpcConnection *Connection,
 372                         void *buffer, unsigned int count)
 373 {
 374   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 375   char *buf = buffer;
 376   BOOL ret = TRUE;
 377   unsigned int bytes_left = count;
 378
 379   while (bytes_left)
 380   {
 381     DWORD bytes_read;
 382     ret = ReadFile(npc->pipe, buf, bytes_left, &bytes_read, NULL);
 383     if (!ret || !bytes_read)
 384         break;
 385     bytes_left -= bytes_read;
 386     buf += bytes_read;
 387   }
 388   return ret ? count : -1;
 389 }
 390
 391 static int rpcrt4_conn_np_write(RpcConnection *Connection,
 392                              const void *buffer, unsigned int count)
 393 {
 394   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 395   const char *buf = buffer;
 396   BOOL ret = TRUE;
 397   unsigned int bytes_left = count;
 398
 399   while (bytes_left)
 400   {
 401     DWORD bytes_written;
 402     ret = WriteFile(npc->pipe, buf, bytes_left, &bytes_written, NULL);
 403     if (!ret || !bytes_written)
 404         break;
 405     bytes_left -= bytes_written;
 406     buf += bytes_written;
 407   }
 408   return ret ? count : -1;
 409 }
 410
 411 static int rpcrt4_conn_np_close(RpcConnection *Connection)
 412 {
 413   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 414   if (npc->pipe) {
 415     FlushFileBuffers(npc->pipe);
 416     CloseHandle(npc->pipe);
 417     npc->pipe = 0;
 418   }
 419   if (npc->ovl.hEvent) {
 420     CloseHandle(npc->ovl.hEvent);
 421     npc->ovl.hEvent = 0;
 422   }
 423   return 0;
 424 }
 425
 426 static void rpcrt4_conn_np_cancel_call(RpcConnection *Connection)
 427 {
 428     /* FIXME: implement when named pipe writes use overlapped I/O */
 429 }
 430
 431 static int rpcrt4_conn_np_wait_for_incoming_data(RpcConnection *Connection)
 432 {
 433     /* FIXME: implement when named pipe writes use overlapped I/O */
 434     return -1;
 435 }
 436
 437 static size_t rpcrt4_ncacn_np_get_top_of_tower(unsigned char *tower_data,
 438                                                const char *networkaddr,
 439                                                const char *endpoint)
 440 {
 441     twr_empty_floor_t *smb_floor;
 442     twr_empty_floor_t *nb_floor;
 443     size_t size;
 444     size_t networkaddr_size;
 445     size_t endpoint_size;
 446
 447     TRACE("(%p, %s, %s)\n", tower_data, networkaddr, endpoint);
 448
 449     networkaddr_size = networkaddr ? strlen(networkaddr) + 1 : 1;
 450     endpoint_size = endpoint ? strlen(endpoint) + 1 : 1;
 451     size = sizeof(*smb_floor) + endpoint_size + sizeof(*nb_floor) + networkaddr_size;
 452
 453     if (!tower_data)
 454         return size;
 455
 456     smb_floor = (twr_empty_floor_t *)tower_data;
 457
 458     tower_data += sizeof(*smb_floor);
 459
 460     smb_floor->count_lhs = sizeof(smb_floor->protid);
 461     smb_floor->protid = EPM_PROTOCOL_SMB;
 462     smb_floor->count_rhs = endpoint_size;
 463
 464     if (endpoint)
 465         memcpy(tower_data, endpoint, endpoint_size);
 466     else
 467         tower_data[0] = 0;
 468     tower_data += endpoint_size;
 469
 470     nb_floor = (twr_empty_floor_t *)tower_data;
 471
 472     tower_data += sizeof(*nb_floor);
 473
 474     nb_floor->count_lhs = sizeof(nb_floor->protid);
 475     nb_floor->protid = EPM_PROTOCOL_NETBIOS;
 476     nb_floor->count_rhs = networkaddr_size;
 477
 478     if (networkaddr)
 479         memcpy(tower_data, networkaddr, networkaddr_size);
 480     else
 481         tower_data[0] = 0;
 482
 483     return size;
 484 }
 485
 486 static RPC_STATUS rpcrt4_ncacn_np_parse_top_of_tower(const unsigned char *tower_data,
 487                                                      size_t tower_size,
 488                                                      char **networkaddr,
 489                                                      char **endpoint)
 490 {
 491     const twr_empty_floor_t *smb_floor = (const twr_empty_floor_t *)tower_data;
 492     const twr_empty_floor_t *nb_floor;
 493
 494     TRACE("(%p, %d, %p, %p)\n", tower_data, (int)tower_size, networkaddr, endpoint);
 495
 496     if (tower_size < sizeof(*smb_floor))
 497         return EPT_S_NOT_REGISTERED;
 498
 499     tower_data += sizeof(*smb_floor);
 500     tower_size -= sizeof(*smb_floor);
 501
 502     if ((smb_floor->count_lhs != sizeof(smb_floor->protid)) ||
 503         (smb_floor->protid != EPM_PROTOCOL_SMB) ||
 504         (smb_floor->count_rhs > tower_size) ||
 505         (tower_data[smb_floor->count_rhs - 1] != '\0'))
 506         return EPT_S_NOT_REGISTERED;
 507
 508     if (endpoint)
 509     {
 510         *endpoint = I_RpcAllocate(smb_floor->count_rhs);
 511         if (!*endpoint)
 512             return RPC_S_OUT_OF_RESOURCES;
 513         memcpy(*endpoint, tower_data, smb_floor->count_rhs);
 514     }
 515     tower_data += smb_floor->count_rhs;
 516     tower_size -= smb_floor->count_rhs;
 517
 518     if (tower_size < sizeof(*nb_floor))
 519         return EPT_S_NOT_REGISTERED;
 520
 521     nb_floor = (const twr_empty_floor_t *)tower_data;
 522
 523     tower_data += sizeof(*nb_floor);
 524     tower_size -= sizeof(*nb_floor);
 525
 526     if ((nb_floor->count_lhs != sizeof(nb_floor->protid)) ||
 527         (nb_floor->protid != EPM_PROTOCOL_NETBIOS) ||
 528         (nb_floor->count_rhs > tower_size) ||
 529         (tower_data[nb_floor->count_rhs - 1] != '\0'))
 530         return EPT_S_NOT_REGISTERED;
 531
 532     if (networkaddr)
 533     {
 534         *networkaddr = I_RpcAllocate(nb_floor->count_rhs);
 535         if (!*networkaddr)
 536         {
 537             if (endpoint)
 538             {
 539                 I_RpcFree(*endpoint);
 540                 *endpoint = NULL;
 541             }
 542             return RPC_S_OUT_OF_RESOURCES;
 543         }
 544         memcpy(*networkaddr, tower_data, nb_floor->count_rhs);
 545     }
 546
 547     return RPC_S_OK;
 548 }
 549
 550 typedef struct _RpcServerProtseq_np
 551 {
 552     RpcServerProtseq common;
 553     HANDLE mgr_event;
 554 } RpcServerProtseq_np;
 555
 556 static RpcServerProtseq *rpcrt4_protseq_np_alloc(void)
 557 {
 558     RpcServerProtseq_np *ps = HeapAlloc(GetProcessHeap(), 0, sizeof(*ps));
 559     if (ps)
 560         ps->mgr_event = CreateEventW(NULL, FALSE, FALSE, NULL);
 561     return &ps->common;
 562 }
 563
 564 static void rpcrt4_protseq_np_signal_state_changed(RpcServerProtseq *protseq)
 565 {
 566     RpcServerProtseq_np *npps = CONTAINING_RECORD(protseq, RpcServerProtseq_np, common);
 567     SetEvent(npps->mgr_event);
 568 }
 569
 570 static void *rpcrt4_protseq_np_get_wait_array(RpcServerProtseq *protseq, void *prev_array, unsigned int *count)
 571 {
 572     HANDLE *objs = prev_array;
 573     RpcConnection_np *conn;
 574     RpcServerProtseq_np *npps = CONTAINING_RECORD(protseq, RpcServerProtseq_np, common);
 575
 576     EnterCriticalSection(&protseq->cs);
 577
 578     /* open and count connections */
 579     *count = 1;
 580     conn = CONTAINING_RECORD(protseq->conn, RpcConnection_np, common);
 581     while (conn) {
 582         rpcrt4_conn_listen_pipe(conn);
 583         if (conn->ovl.hEvent)
 584             (*count)++;
 585         conn = CONTAINING_RECORD(conn->common.Next, RpcConnection_np, common);
 586     }
 587
 588     /* make array of connections */
 589     if (objs)
 590         objs = HeapReAlloc(GetProcessHeap(), 0, objs, *count*sizeof(HANDLE));
 591     else
 592         objs = HeapAlloc(GetProcessHeap(), 0, *count*sizeof(HANDLE));
 593     if (!objs)
 594     {
 595         ERR("couldn't allocate objs\n");
 596         LeaveCriticalSection(&protseq->cs);
 597         return NULL;
 598     }
 599
 600     objs[0] = npps->mgr_event;
 601     *count = 1;
 602     conn = CONTAINING_RECORD(protseq->conn, RpcConnection_np, common);
 603     while (conn) {
 604         if ((objs[*count] = conn->ovl.hEvent))
 605             (*count)++;
 606         conn = CONTAINING_RECORD(conn->common.Next, RpcConnection_np, common);
 607     }
 608     LeaveCriticalSection(&protseq->cs);
 609     return objs;
 610 }
 611
 612 static void rpcrt4_protseq_np_free_wait_array(RpcServerProtseq *protseq, void *array)
 613 {
 614     HeapFree(GetProcessHeap(), 0, array);
 615 }
 616
 617 static int rpcrt4_protseq_np_wait_for_new_connection(RpcServerProtseq *protseq, unsigned int count, void *wait_array)
 618 {
 619     HANDLE b_handle;
 620     HANDLE *objs = wait_array;
 621     DWORD res;
 622     RpcConnection *cconn;
 623     RpcConnection_np *conn;
 624
 625     if (!objs)
 626         return -1;
 627
 628     do
 629     {
 630         /* an alertable wait isn't strictly necessary, but due to our
 631          * overlapped I/O implementation in Wine we need to free some memory
 632          * by the file user APC being called, even if no completion routine was
 633          * specified at the time of starting the async operation */
 634         res = WaitForMultipleObjectsEx(count, objs, FALSE, INFINITE, TRUE);
 635     } while (res == WAIT_IO_COMPLETION);
 636
 637     if (res == WAIT_OBJECT_0)
 638         return 0;
 639     else if (res == WAIT_FAILED)
 640     {
 641         ERR("wait failed with error %d\n", GetLastError());
 642         return -1;
 643     }
 644     else
 645     {
 646         b_handle = objs[res - WAIT_OBJECT_0];
 647         /* find which connection got a RPC */
 648         EnterCriticalSection(&protseq->cs);
 649         conn = CONTAINING_RECORD(protseq->conn, RpcConnection_np, common);
 650         while (conn) {
 651             if (b_handle == conn->ovl.hEvent) break;
 652             conn = CONTAINING_RECORD(conn->common.Next, RpcConnection_np, common);
 653         }
 654         cconn = NULL;
 655         if (conn)
 656             RPCRT4_SpawnConnection(&cconn, &conn->common);
 657         else
 658             ERR("failed to locate connection for handle %p\n", b_handle);
 659         LeaveCriticalSection(&protseq->cs);
 660         if (cconn)
 661         {
 662             RPCRT4_new_client(cconn);
 663             return 1;
 664         }
 665         else return -1;
 666     }
 667 }
 668
 669 static size_t rpcrt4_ncalrpc_get_top_of_tower(unsigned char *tower_data,
 670                                               const char *networkaddr,
 671                                               const char *endpoint)
 672 {
 673     twr_empty_floor_t *pipe_floor;
 674     size_t size;
 675     size_t endpoint_size;
 676
 677     TRACE("(%p, %s, %s)\n", tower_data, networkaddr, endpoint);
 678
 679     endpoint_size = strlen(endpoint) + 1;
 680     size = sizeof(*pipe_floor) + endpoint_size;
 681
 682     if (!tower_data)
 683         return size;
 684
 685     pipe_floor = (twr_empty_floor_t *)tower_data;
 686
 687     tower_data += sizeof(*pipe_floor);
 688
 689     pipe_floor->count_lhs = sizeof(pipe_floor->protid);
 690     pipe_floor->protid = EPM_PROTOCOL_PIPE;
 691     pipe_floor->count_rhs = endpoint_size;
 692
 693     memcpy(tower_data, endpoint, endpoint_size);
 694
 695     return size;
 696 }
 697
 698 static RPC_STATUS rpcrt4_ncalrpc_parse_top_of_tower(const unsigned char *tower_data,
 699                                                     size_t tower_size,
 700                                                     char **networkaddr,
 701                                                     char **endpoint)
 702 {
 703     const twr_empty_floor_t *pipe_floor = (const twr_empty_floor_t *)tower_data;
 704
 705     TRACE("(%p, %d, %p, %p)\n", tower_data, (int)tower_size, networkaddr, endpoint);
 706
 707     if (tower_size < sizeof(*pipe_floor))
 708         return EPT_S_NOT_REGISTERED;
 709
 710     tower_data += sizeof(*pipe_floor);
 711     tower_size -= sizeof(*pipe_floor);
 712
 713     if ((pipe_floor->count_lhs != sizeof(pipe_floor->protid)) ||
 714         (pipe_floor->protid != EPM_PROTOCOL_PIPE) ||
 715         (pipe_floor->count_rhs > tower_size) ||
 716         (tower_data[pipe_floor->count_rhs - 1] != '\0'))
 717         return EPT_S_NOT_REGISTERED;
 718
 719     if (networkaddr)
 720         *networkaddr = NULL;
 721
 722     if (endpoint)
 723     {
 724         *endpoint = I_RpcAllocate(pipe_floor->count_rhs);
 725         if (!*endpoint)
 726             return RPC_S_OUT_OF_RESOURCES;
 727         memcpy(*endpoint, tower_data, pipe_floor->count_rhs);
 728     }
 729
 730     return RPC_S_OK;
 731 }
 732
 733 /**** ncacn_ip_tcp support ****/
 734
 735 #ifdef HAVE_SOCKETPAIR
 736
 737 typedef struct _RpcConnection_tcp
 738 {
 739   RpcConnection common;
 740   int sock;
 741   int cancel_fds[2];
 742 } RpcConnection_tcp;
 743
 744 static RpcConnection *rpcrt4_conn_tcp_alloc(void)
 745 {
 746   RpcConnection_tcp *tcpc;
 747   tcpc = HeapAlloc(GetProcessHeap(), 0, sizeof(RpcConnection_tcp));
 748   if (tcpc == NULL)
 749     return NULL;
 750   tcpc->sock = -1;
 751   if (socketpair(PF_UNIX, SOCK_STREAM, 0, tcpc->cancel_fds) < 0)
 752   {
 753     ERR("socketpair() failed: %s\n", strerror(errno));
 754     HeapFree(GetProcessHeap(), 0, tcpc);
 755     return NULL;
 756   }
 757   return &tcpc->common;
 758 }
 759
 760 static RPC_STATUS rpcrt4_ncacn_ip_tcp_open(RpcConnection* Connection)
 761 {
 762   RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
 763   int sock;
 764   int ret;
 765   struct addrinfo *ai;
 766   struct addrinfo *ai_cur;
 767   struct addrinfo hints;
 768
 769   TRACE("(%s, %s)\n", Connection->NetworkAddr, Connection->Endpoint);
 770
 771   if (tcpc->sock != -1)
 772     return RPC_S_OK;
 773
 774   hints.ai_flags          = 0;
 775   hints.ai_family         = PF_UNSPEC;
 776   hints.ai_socktype       = SOCK_STREAM;
 777   hints.ai_protocol       = IPPROTO_TCP;
 778   hints.ai_addrlen        = 0;
 779   hints.ai_addr           = NULL;
 780   hints.ai_canonname      = NULL;
 781   hints.ai_next           = NULL;
 782
 783   ret = getaddrinfo(Connection->NetworkAddr, Connection->Endpoint, &hints, &ai);
 784   if (ret)
 785   {
 786     ERR("getaddrinfo for %s:%s failed: %s\n", Connection->NetworkAddr,
 787       Connection->Endpoint, gai_strerror(ret));
 788     return RPC_S_SERVER_UNAVAILABLE;
 789   }
 790
 791   for (ai_cur = ai; ai_cur; ai_cur = ai_cur->ai_next)
 792   {
 793     int val;
 794
 795     if (TRACE_ON(rpc))
 796     {
 797       char host[256];
 798       char service[256];
 799       getnameinfo(ai_cur->ai_addr, ai_cur->ai_addrlen,
 800         host, sizeof(host), service, sizeof(service),
 801         NI_NUMERICHOST | NI_NUMERICSERV);
 802       TRACE("trying %s:%s\n", host, service);
 803     }
 804
 805     sock = socket(ai_cur->ai_family, ai_cur->ai_socktype, ai_cur->ai_protocol);
 806     if (sock == -1)
 807     {
 808       WARN("socket() failed: %s\n", strerror(errno));
 809       continue;
 810     }
 811
 812     if (0>connect(sock, ai_cur->ai_addr, ai_cur->ai_addrlen))
 813     {
 814       WARN("connect() failed: %s\n", strerror(errno));
 815       closesocket(sock);
 816       continue;
 817     }
 818
 819     /* RPC depends on having minimal latency so disable the Nagle algorithm */
 820     val = 1;
 821     setsockopt(sock, SOL_TCP, TCP_NODELAY, &val, sizeof(val));
 822     fcntl(sock, F_SETFL, O_NONBLOCK); /* make socket nonblocking */
 823
 824     tcpc->sock = sock;
 825
 826     freeaddrinfo(ai);
 827     TRACE("connected\n");
 828     return RPC_S_OK;
 829   }
 830
 831   freeaddrinfo(ai);
 832   ERR("couldn't connect to %s:%s\n", Connection->NetworkAddr, Connection->Endpoint);
 833   return RPC_S_SERVER_UNAVAILABLE;
 834 }
 835
 836 static RPC_STATUS rpcrt4_protseq_ncacn_ip_tcp_open_endpoint(RpcServerProtseq *protseq, LPSTR endpoint)
 837 {
 838     RPC_STATUS status = RPC_S_CANT_CREATE_ENDPOINT;
 839     int sock;
 840     int ret;
 841     struct addrinfo *ai;
 842     struct addrinfo *ai_cur;
 843     struct addrinfo hints;
 844     RpcConnection *first_connection = NULL;
 845
 846     TRACE("(%p, %s)\n", protseq, endpoint);
 847
 848     hints.ai_flags          = AI_PASSIVE /* for non-localhost addresses */;
 849     hints.ai_family         = PF_UNSPEC;
 850     hints.ai_socktype       = SOCK_STREAM;
 851     hints.ai_protocol       = IPPROTO_TCP;
 852     hints.ai_addrlen        = 0;
 853     hints.ai_addr           = NULL;
 854     hints.ai_canonname      = NULL;
 855     hints.ai_next           = NULL;
 856
 857     ret = getaddrinfo(NULL, endpoint, &hints, &ai);
 858     if (ret)
 859     {
 860         ERR("getaddrinfo for port %s failed: %s\n", endpoint,
 861             gai_strerror(ret));
 862         if ((ret == EAI_SERVICE) || (ret == EAI_NONAME))
 863             return RPC_S_INVALID_ENDPOINT_FORMAT;
 864         return RPC_S_CANT_CREATE_ENDPOINT;
 865     }
 866
 867     for (ai_cur = ai; ai_cur; ai_cur = ai_cur->ai_next)
 868     {
 869         RpcConnection_tcp *tcpc;
 870         RPC_STATUS create_status;
 871
 872         if (TRACE_ON(rpc))
 873         {
 874             char host[256];
 875             char service[256];
 876             getnameinfo(ai_cur->ai_addr, ai_cur->ai_addrlen,
 877                         host, sizeof(host), service, sizeof(service),
 878                         NI_NUMERICHOST | NI_NUMERICSERV);
 879             TRACE("trying %s:%s\n", host, service);
 880         }
 881
 882         sock = socket(ai_cur->ai_family, ai_cur->ai_socktype, ai_cur->ai_protocol);
 883         if (sock == -1)
 884         {
 885             WARN("socket() failed: %s\n", strerror(errno));
 886             status = RPC_S_CANT_CREATE_ENDPOINT;
 887             continue;
 888         }
 889
 890         ret = bind(sock, ai_cur->ai_addr, ai_cur->ai_addrlen);
 891         if (ret < 0)
 892         {
 893             WARN("bind failed: %s\n", strerror(errno));
 894             closesocket(sock);
 895             if (errno == EADDRINUSE)
 896               status = RPC_S_DUPLICATE_ENDPOINT;
 897             else
 898               status = RPC_S_CANT_CREATE_ENDPOINT;
 899             continue;
 900         }
 901         create_status = RPCRT4_CreateConnection((RpcConnection **)&tcpc, TRUE,
 902                                                 protseq->Protseq, NULL,
 903                                                 endpoint, NULL, NULL, NULL);
 904         if (create_status != RPC_S_OK)
 905         {
 906             closesocket(sock);
 907             status = create_status;
 908             continue;
 909         }
 910
 911         tcpc->sock = sock;
 912         ret = listen(sock, protseq->MaxCalls);
 913         if (ret < 0)
 914         {
 915             WARN("listen failed: %s\n", strerror(errno));
 916             RPCRT4_DestroyConnection(&tcpc->common);
 917             status = RPC_S_OUT_OF_RESOURCES;
 918             continue;
 919         }
 920         /* need a non-blocking socket, otherwise accept() has a potential
 921          * race-condition (poll() says it is readable, connection drops,
 922          * and accept() blocks until the next connection comes...)
 923          */
 924         ret = fcntl(sock, F_SETFL, O_NONBLOCK);
 925         if (ret < 0)
 926         {
 927             WARN("couldn't make socket non-blocking, error %d\n", ret);
 928             RPCRT4_DestroyConnection(&tcpc->common);
 929             status = RPC_S_OUT_OF_RESOURCES;
 930             continue;
 931         }
 932
 933         tcpc->common.Next = first_connection;
 934         first_connection = &tcpc->common;
 935     }
 936
 937     freeaddrinfo(ai);
 938
 939     /* if at least one connection was created for an endpoint then
 940      * return success */
 941     if (first_connection)
 942     {
 943         RpcConnection *conn;
 944
 945         /* find last element in list */
 946         for (conn = first_connection; conn->Next; conn = conn->Next)
 947             ;
 948
 949         EnterCriticalSection(&protseq->cs);
 950         conn->Next = protseq->conn;
 951         protseq->conn = first_connection;
 952         LeaveCriticalSection(&protseq->cs);
 953
 954         TRACE("listening on %s\n", endpoint);
 955         return RPC_S_OK;
 956     }
 957
 958     ERR("couldn't listen on port %s\n", endpoint);
 959     return status;
 960 }
 961
 962 static RPC_STATUS rpcrt4_conn_tcp_handoff(RpcConnection *old_conn, RpcConnection *new_conn)
 963 {
 964   int ret;
 965   struct sockaddr_in address;
 966   socklen_t addrsize;
 967   RpcConnection_tcp *server = (RpcConnection_tcp*) old_conn;
 968   RpcConnection_tcp *client = (RpcConnection_tcp*) new_conn;
 969
 970   addrsize = sizeof(address);
 971   ret = accept(server->sock, (struct sockaddr*) &address, &addrsize);
 972   if (ret < 0)
 973   {
 974     ERR("Failed to accept a TCP connection: error %d\n", ret);
 975     return RPC_S_OUT_OF_RESOURCES;
 976   }
 977   /* reset to blocking behaviour */
 978   fcntl(ret, F_SETFL, 0);
 979   client->sock = ret;
 980   TRACE("Accepted a new TCP connection\n");
 981   return RPC_S_OK;
 982 }
 983
 984 static int rpcrt4_conn_tcp_read(RpcConnection *Connection,
 985                                 void *buffer, unsigned int count)
 986 {
 987   RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
 988   int bytes_read = 0;
 989   do
 990   {
 991     int r = recv(tcpc->sock, (char *)buffer + bytes_read, count - bytes_read, 0);
 992     if (!r)
 993       return -1;
 994     else if (r > 0)
 995       bytes_read += r;
 996     else if (errno != EAGAIN)
 997     {
 998       WARN("recv() failed: %s\n", strerror(errno));
 999       return -1;
1000     }
1001     else
1002     {
1003       struct pollfd pfds[2];
1004       pfds[0].fd = tcpc->sock;
1005       pfds[0].events = POLLIN;
1006       pfds[1].fd = tcpc->cancel_fds[0];
1007       pfds[1].events = POLLIN;
1008       if (poll(pfds, 2, -1 /* infinite */) == -1 && errno != EINTR)
1009       {
1010         ERR("poll() failed: %s\n", strerror(errno));
1011         return -1;
1012       }
1013       if (pfds[1].revents & POLLIN) /* canceled */
1014       {
1015         char dummy;
1016         read(pfds[1].fd, &dummy, sizeof(dummy));
1017         return -1;
1018       }
1019     }
1020   } while (bytes_read != count);
1021   TRACE("%d %p %u -> %d\n", tcpc->sock, buffer, count, bytes_read);
1022   return bytes_read;
1023 }
1024
1025 static int rpcrt4_conn_tcp_write(RpcConnection *Connection,
1026                                  const void *buffer, unsigned int count)
1027 {
1028   RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
1029   int bytes_written = 0;
1030   do
1031   {
1032     int r = send(tcpc->sock, (const char *)buffer + bytes_written, count - bytes_written, 0);
1033     if (r >= 0)
1034       bytes_written += r;
1035     else if (errno != EAGAIN)
1036       return -1;
1037     else
1038     {
1039       struct pollfd pfd;
1040       pfd.fd = tcpc->sock;
1041       pfd.events = POLLOUT;
1042       if (poll(&pfd, 1, -1 /* infinite */) == -1 && errno != EINTR)
1043       {
1044         ERR("poll() failed: %s\n", strerror(errno));
1045         return -1;
1046       }
1047     }
1048   } while (bytes_written != count);
1049   TRACE("%d %p %u -> %d\n", tcpc->sock, buffer, count, bytes_written);
1050   return bytes_written;
1051 }
1052
1053 static int rpcrt4_conn_tcp_close(RpcConnection *Connection)
1054 {
1055   RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
1056
1057   TRACE("%d\n", tcpc->sock);
1058
1059   if (tcpc->sock != -1)
1060     closesocket(tcpc->sock);
1061   tcpc->sock = -1;
1062   close(tcpc->cancel_fds[0]);
1063   close(tcpc->cancel_fds[1]);
1064   return 0;
1065 }
1066
1067 static void rpcrt4_conn_tcp_cancel_call(RpcConnection *Connection)
1068 {
1069     RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
1070     char dummy = 1;
1071
1072     TRACE("%p\n", Connection);
1073
1074     write(tcpc->cancel_fds[1], &dummy, 1);
1075 }
1076
1077 static int rpcrt4_conn_tcp_wait_for_incoming_data(RpcConnection *Connection)
1078 {
1079     RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
1080     struct pollfd pfds[2];
1081
1082     TRACE("%p\n", Connection);
1083
1084     pfds[0].fd = tcpc->sock;
1085     pfds[0].events = POLLIN;
1086     pfds[1].fd = tcpc->cancel_fds[0];
1087     pfds[1].events = POLLIN;
1088     if (poll(pfds, 2, -1 /* infinite */) == -1 && errno != EINTR)
1089     {
1090       ERR("poll() failed: %s\n", strerror(errno));
1091       return -1;
1092     }
1093     if (pfds[1].revents & POLLIN) /* canceled */
1094     {
1095       char dummy;
1096       read(pfds[1].fd, &dummy, sizeof(dummy));
1097       return -1;
1098     }
1099
1100     return 0;
1101 }
1102
1103 static size_t rpcrt4_ncacn_ip_tcp_get_top_of_tower(unsigned char *tower_data,
1104                                                    const char *networkaddr,
1105                                                    const char *endpoint)
1106 {
1107     twr_tcp_floor_t *tcp_floor;
1108     twr_ipv4_floor_t *ipv4_floor;
1109     struct addrinfo *ai;
1110     struct addrinfo hints;
1111     int ret;
1112     size_t size = sizeof(*tcp_floor) + sizeof(*ipv4_floor);
1113
1114     TRACE("(%p, %s, %s)\n", tower_data, networkaddr, endpoint);
1115
1116     if (!tower_data)
1117         return size;
1118
1119     tcp_floor = (twr_tcp_floor_t *)tower_data;
1120     tower_data += sizeof(*tcp_floor);
1121
1122     ipv4_floor = (twr_ipv4_floor_t *)tower_data;
1123
1124     tcp_floor->count_lhs = sizeof(tcp_floor->protid);
1125     tcp_floor->protid = EPM_PROTOCOL_TCP;
1126     tcp_floor->count_rhs = sizeof(tcp_floor->port);
1127
1128     ipv4_floor->count_lhs = sizeof(ipv4_floor->protid);
1129     ipv4_floor->protid = EPM_PROTOCOL_IP;
1130     ipv4_floor->count_rhs = sizeof(ipv4_floor->ipv4addr);
1131
1132     hints.ai_flags          = AI_NUMERICHOST;
1133     /* FIXME: only support IPv4 at the moment. how is IPv6 represented by the EPM? */
1134     hints.ai_family         = PF_INET;
1135     hints.ai_socktype       = SOCK_STREAM;
1136     hints.ai_protocol       = IPPROTO_TCP;
1137     hints.ai_addrlen        = 0;
1138     hints.ai_addr           = NULL;
1139     hints.ai_canonname      = NULL;
1140     hints.ai_next           = NULL;
1141
1142     ret = getaddrinfo(networkaddr, endpoint, &hints, &ai);
1143     if (ret)
1144     {
1145         ret = getaddrinfo("0.0.0.0", endpoint, &hints, &ai);
1146         if (ret)
1147         {
1148             ERR("getaddrinfo failed: %s\n", gai_strerror(ret));
1149             return 0;
1150         }
1151     }
1152
1153     if (ai->ai_family == PF_INET)
1154     {
1155         const struct sockaddr_in *sin = (const struct sockaddr_in *)ai->ai_addr;
1156         tcp_floor->port = sin->sin_port;
1157         ipv4_floor->ipv4addr = sin->sin_addr.s_addr;
1158     }
1159     else
1160     {
1161         ERR("unexpected protocol family %d\n", ai->ai_family);
1162         return 0;
1163     }
1164
1165     freeaddrinfo(ai);
1166
1167     return size;
1168 }
1169
1170 static RPC_STATUS rpcrt4_ncacn_ip_tcp_parse_top_of_tower(const unsigned char *tower_data,
1171                                                          size_t tower_size,
1172                                                          char **networkaddr,
1173                                                          char **endpoint)
1174 {
1175     const twr_tcp_floor_t *tcp_floor = (const twr_tcp_floor_t *)tower_data;
1176     const twr_ipv4_floor_t *ipv4_floor;
1177     struct in_addr in_addr;
1178
1179     TRACE("(%p, %d, %p, %p)\n", tower_data, (int)tower_size, networkaddr, endpoint);
1180
1181     if (tower_size < sizeof(*tcp_floor))
1182         return EPT_S_NOT_REGISTERED;
1183
1184     tower_data += sizeof(*tcp_floor);
1185     tower_size -= sizeof(*tcp_floor);
1186
1187     if (tower_size < sizeof(*ipv4_floor))
1188         return EPT_S_NOT_REGISTERED;
1189
1190     ipv4_floor = (const twr_ipv4_floor_t *)tower_data;
1191
1192     if ((tcp_floor->count_lhs != sizeof(tcp_floor->protid)) ||
1193         (tcp_floor->protid != EPM_PROTOCOL_TCP) ||
1194         (tcp_floor->count_rhs != sizeof(tcp_floor->port)) ||
1195         (ipv4_floor->count_lhs != sizeof(ipv4_floor->protid)) ||
1196         (ipv4_floor->protid != EPM_PROTOCOL_IP) ||
1197         (ipv4_floor->count_rhs != sizeof(ipv4_floor->ipv4addr)))
1198         return EPT_S_NOT_REGISTERED;
1199
1200     if (endpoint)
1201     {
1202         *endpoint = I_RpcAllocate(6 /* sizeof("65535") + 1 */);
1203         if (!*endpoint)
1204             return RPC_S_OUT_OF_RESOURCES;
1205         sprintf(*endpoint, "%u", ntohs(tcp_floor->port));
1206     }
1207
1208     if (networkaddr)
1209     {
1210         *networkaddr = I_RpcAllocate(INET_ADDRSTRLEN);
1211         if (!*networkaddr)
1212         {
1213             if (endpoint)
1214             {
1215                 I_RpcFree(*endpoint);
1216                 *endpoint = NULL;
1217             }
1218             return RPC_S_OUT_OF_RESOURCES;
1219         }
1220         in_addr.s_addr = ipv4_floor->ipv4addr;
1221         if (!inet_ntop(AF_INET, &in_addr, *networkaddr, INET_ADDRSTRLEN))
1222         {
1223             ERR("inet_ntop: %s\n", strerror(errno));
1224             I_RpcFree(*networkaddr);
1225             *networkaddr = NULL;
1226             if (endpoint)
1227             {
1228                 I_RpcFree(*endpoint);
1229                 *endpoint = NULL;
1230             }
1231             return EPT_S_NOT_REGISTERED;
1232         }
1233     }
1234
1235     return RPC_S_OK;
1236 }
1237
1238 typedef struct _RpcServerProtseq_sock
1239 {
1240     RpcServerProtseq common;
1241     int mgr_event_rcv;
1242     int mgr_event_snd;
1243 } RpcServerProtseq_sock;
1244
1245 static RpcServerProtseq *rpcrt4_protseq_sock_alloc(void)
1246 {
1247     RpcServerProtseq_sock *ps = HeapAlloc(GetProcessHeap(), 0, sizeof(*ps));
1248     if (ps)
1249     {
1250         int fds[2];
1251         if (!socketpair(PF_UNIX, SOCK_DGRAM, 0, fds))
1252         {
1253             fcntl(fds[0], F_SETFL, O_NONBLOCK);
1254             fcntl(fds[1], F_SETFL, O_NONBLOCK);
1255             ps->mgr_event_rcv = fds[0];
1256             ps->mgr_event_snd = fds[1];
1257         }
1258         else
1259         {
1260             ERR("socketpair failed with error %s\n", strerror(errno));
1261             HeapFree(GetProcessHeap(), 0, ps);
1262             return NULL;
1263         }
1264     }
1265     return &ps->common;
1266 }
1267
1268 static void rpcrt4_protseq_sock_signal_state_changed(RpcServerProtseq *protseq)
1269 {
1270     RpcServerProtseq_sock *sockps = CONTAINING_RECORD(protseq, RpcServerProtseq_sock, common);
1271     char dummy = 1;
1272     write(sockps->mgr_event_snd, &dummy, sizeof(dummy));
1273 }
1274
1275 static void *rpcrt4_protseq_sock_get_wait_array(RpcServerProtseq *protseq, void *prev_array, unsigned int *count)
1276 {
1277     struct pollfd *poll_info = prev_array;
1278     RpcConnection_tcp *conn;
1279     RpcServerProtseq_sock *sockps = CONTAINING_RECORD(protseq, RpcServerProtseq_sock, common);
1280
1281     EnterCriticalSection(&protseq->cs);
1282
1283     /* open and count connections */
1284     *count = 1;
1285     conn = (RpcConnection_tcp *)protseq->conn;
1286     while (conn) {
1287         if (conn->sock != -1)
1288             (*count)++;
1289         conn = (RpcConnection_tcp *)conn->common.Next;
1290     }
1291
1292     /* make array of connections */
1293     if (poll_info)
1294         poll_info = HeapReAlloc(GetProcessHeap(), 0, poll_info, *count*sizeof(*poll_info));
1295     else
1296         poll_info = HeapAlloc(GetProcessHeap(), 0, *count*sizeof(*poll_info));
1297     if (!poll_info)
1298     {
1299         ERR("couldn't allocate poll_info\n");
1300         LeaveCriticalSection(&protseq->cs);
1301         return NULL;
1302     }
1303
1304     poll_info[0].fd = sockps->mgr_event_rcv;
1305     poll_info[0].events = POLLIN;
1306     *count = 1;
1307     conn =  CONTAINING_RECORD(protseq->conn, RpcConnection_tcp, common);
1308     while (conn) {
1309         if (conn->sock != -1)
1310         {
1311             poll_info[*count].fd = conn->sock;
1312             poll_info[*count].events = POLLIN;
1313             (*count)++;
1314         }
1315         conn = CONTAINING_RECORD(conn->common.Next, RpcConnection_tcp, common);
1316     }
1317     LeaveCriticalSection(&protseq->cs);
1318     return poll_info;
1319 }
1320
1321 static void rpcrt4_protseq_sock_free_wait_array(RpcServerProtseq *protseq, void *array)
1322 {
1323     HeapFree(GetProcessHeap(), 0, array);
1324 }
1325
1326 static int rpcrt4_protseq_sock_wait_for_new_connection(RpcServerProtseq *protseq, unsigned int count, void *wait_array)
1327 {
1328     struct pollfd *poll_info = wait_array;
1329     int ret;
1330     unsigned int i;
1331     RpcConnection *cconn;
1332     RpcConnection_tcp *conn;
1333
1334     if (!poll_info)
1335         return -1;
1336
1337     ret = poll(poll_info, count, -1);
1338     if (ret < 0)
1339     {
1340         ERR("poll failed with error %d\n", ret);
1341         return -1;
1342     }
1343
1344     for (i = 0; i < count; i++)
1345         if (poll_info[i].revents & POLLIN)
1346         {
1347             /* RPC server event */
1348             if (i == 0)
1349             {
1350                 char dummy;
1351                 read(poll_info[0].fd, &dummy, sizeof(dummy));
1352                 return 0;
1353             }
1354
1355             /* find which connection got a RPC */
1356             EnterCriticalSection(&protseq->cs);
1357             conn = CONTAINING_RECORD(protseq->conn, RpcConnection_tcp, common);
1358             while (conn) {
1359                 if (poll_info[i].fd == conn->sock) break;
1360                 conn = CONTAINING_RECORD(conn->common.Next, RpcConnection_tcp, common);
1361             }
1362             cconn = NULL;
1363             if (conn)
1364                 RPCRT4_SpawnConnection(&cconn, &conn->common);
1365             else
1366                 ERR("failed to locate connection for fd %d\n", poll_info[i].fd);
1367             LeaveCriticalSection(&protseq->cs);
1368             if (cconn)
1369                 RPCRT4_new_client(cconn);
1370             else
1371                 return -1;
1372         }
1373
1374     return 1;
1375 }
1376
1377 #endif  /* HAVE_SOCKETPAIR */
1378
1379 static const struct connection_ops conn_protseq_list[] = {
1380   { "ncacn_np",
1381     { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_SMB },
1382     rpcrt4_conn_np_alloc,
1383     rpcrt4_ncacn_np_open,
1384     rpcrt4_ncacn_np_handoff,
1385     rpcrt4_conn_np_read,
1386     rpcrt4_conn_np_write,
1387     rpcrt4_conn_np_close,
1388     rpcrt4_conn_np_cancel_call,
1389     rpcrt4_conn_np_wait_for_incoming_data,
1390     rpcrt4_ncacn_np_get_top_of_tower,
1391     rpcrt4_ncacn_np_parse_top_of_tower,
1392   },
1393   { "ncalrpc",
1394     { EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_PIPE },
1395     rpcrt4_conn_np_alloc,
1396     rpcrt4_ncalrpc_open,
1397     rpcrt4_ncalrpc_handoff,
1398     rpcrt4_conn_np_read,
1399     rpcrt4_conn_np_write,
1400     rpcrt4_conn_np_close,
1401     rpcrt4_conn_np_cancel_call,
1402     rpcrt4_conn_np_wait_for_incoming_data,
1403     rpcrt4_ncalrpc_get_top_of_tower,
1404     rpcrt4_ncalrpc_parse_top_of_tower,
1405   },
1406 #ifdef HAVE_SOCKETPAIR
1407   { "ncacn_ip_tcp",
1408     { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_TCP },
1409     rpcrt4_conn_tcp_alloc,
1410     rpcrt4_ncacn_ip_tcp_open,
1411     rpcrt4_conn_tcp_handoff,
1412     rpcrt4_conn_tcp_read,
1413     rpcrt4_conn_tcp_write,
1414     rpcrt4_conn_tcp_close,
1415     rpcrt4_conn_tcp_cancel_call,
1416     rpcrt4_conn_tcp_wait_for_incoming_data,
1417     rpcrt4_ncacn_ip_tcp_get_top_of_tower,
1418     rpcrt4_ncacn_ip_tcp_parse_top_of_tower,
1419   }
1420 #endif
1421 };
1422
1423
1424 static const struct protseq_ops protseq_list[] =
1425 {
1426     {
1427         "ncacn_np",
1428         rpcrt4_protseq_np_alloc,
1429         rpcrt4_protseq_np_signal_state_changed,
1430         rpcrt4_protseq_np_get_wait_array,
1431         rpcrt4_protseq_np_free_wait_array,
1432         rpcrt4_protseq_np_wait_for_new_connection,
1433         rpcrt4_protseq_ncacn_np_open_endpoint,
1434     },
1435     {
1436         "ncalrpc",
1437         rpcrt4_protseq_np_alloc,
1438         rpcrt4_protseq_np_signal_state_changed,
1439         rpcrt4_protseq_np_get_wait_array,
1440         rpcrt4_protseq_np_free_wait_array,
1441         rpcrt4_protseq_np_wait_for_new_connection,
1442         rpcrt4_protseq_ncalrpc_open_endpoint,
1443     },
1444 #ifdef HAVE_SOCKETPAIR
1445     {
1446         "ncacn_ip_tcp",
1447         rpcrt4_protseq_sock_alloc,
1448         rpcrt4_protseq_sock_signal_state_changed,
1449         rpcrt4_protseq_sock_get_wait_array,
1450         rpcrt4_protseq_sock_free_wait_array,
1451         rpcrt4_protseq_sock_wait_for_new_connection,
1452         rpcrt4_protseq_ncacn_ip_tcp_open_endpoint,
1453     },
1454 #endif
1455 };
1456
1457 #define ARRAYSIZE(a) (sizeof((a)) / sizeof((a)[0]))
1458
1459 const struct protseq_ops *rpcrt4_get_protseq_ops(const char *protseq)
1460 {
1461   unsigned int i;
1462   for(i=0; i<ARRAYSIZE(protseq_list); i++)
1463     if (!strcmp(protseq_list[i].name, protseq))
1464       return &protseq_list[i];
1465   return NULL;
1466 }
1467
1468 static const struct connection_ops *rpcrt4_get_conn_protseq_ops(const char *protseq)
1469 {
1470     unsigned int i;
1471     for(i=0; i<ARRAYSIZE(conn_protseq_list); i++)
1472         if (!strcmp(conn_protseq_list[i].name, protseq))
1473             return &conn_protseq_list[i];
1474     return NULL;
1475 }
1476
1477 /**** interface to rest of code ****/
1478
1479 RPC_STATUS RPCRT4_OpenClientConnection(RpcConnection* Connection)
1480 {
1481   TRACE("(Connection == ^%p)\n", Connection);
1482
1483   assert(!Connection->server);
1484   return Connection->ops->open_connection_client(Connection);
1485 }
1486
1487 RPC_STATUS RPCRT4_CloseConnection(RpcConnection* Connection)
1488 {
1489   TRACE("(Connection == ^%p)\n", Connection);
1490   if (SecIsValidHandle(&Connection->ctx))
1491   {
1492     DeleteSecurityContext(&Connection->ctx);
1493     SecInvalidateHandle(&Connection->ctx);
1494   }
1495   rpcrt4_conn_close(Connection);
1496   return RPC_S_OK;
1497 }
1498
1499 RPC_STATUS RPCRT4_CreateConnection(RpcConnection** Connection, BOOL server,
1500     LPCSTR Protseq, LPCSTR NetworkAddr, LPCSTR Endpoint,
1501     LPCWSTR NetworkOptions, RpcAuthInfo* AuthInfo, RpcQualityOfService *QOS)
1502 {
1503   const struct connection_ops *ops;
1504   RpcConnection* NewConnection;
1505
1506   ops = rpcrt4_get_conn_protseq_ops(Protseq);
1507   if (!ops)
1508   {
1509     FIXME("not supported for protseq %s\n", Protseq);
1510     return RPC_S_PROTSEQ_NOT_SUPPORTED;
1511   }
1512
1513   NewConnection = ops->alloc();
1514   NewConnection->Next = NULL;
1515   NewConnection->server_binding = NULL;
1516   NewConnection->server = server;
1517   NewConnection->ops = ops;
1518   NewConnection->NetworkAddr = RPCRT4_strdupA(NetworkAddr);
1519   NewConnection->Endpoint = RPCRT4_strdupA(Endpoint);
1520   NewConnection->NetworkOptions = RPCRT4_strdupW(NetworkOptions);
1521   NewConnection->MaxTransmissionSize = RPC_MAX_PACKET_SIZE;
1522   memset(&NewConnection->ActiveInterface, 0, sizeof(NewConnection->ActiveInterface));
1523   NewConnection->NextCallId = 1;
1524
1525   SecInvalidateHandle(&NewConnection->ctx);
1526   memset(&NewConnection->exp, 0, sizeof(NewConnection->exp));
1527   NewConnection->attr = 0;
1528   if (AuthInfo) RpcAuthInfo_AddRef(AuthInfo);
1529   NewConnection->AuthInfo = AuthInfo;
1530   NewConnection->encryption_auth_len = 0;
1531   NewConnection->signature_auth_len = 0;
1532   if (QOS) RpcQualityOfService_AddRef(QOS);
1533   NewConnection->QOS = QOS;
1534
1535   list_init(&NewConnection->conn_pool_entry);
1536   NewConnection->async_state = NULL;
1537
1538   TRACE("connection: %p\n", NewConnection);
1539   *Connection = NewConnection;
1540
1541   return RPC_S_OK;
1542 }
1543
1544
1545 RPC_STATUS RPCRT4_SpawnConnection(RpcConnection** Connection, RpcConnection* OldConnection)
1546 {
1547   RPC_STATUS err;
1548
1549   err = RPCRT4_CreateConnection(Connection, OldConnection->server,
1550                                 rpcrt4_conn_get_name(OldConnection),
1551                                 OldConnection->NetworkAddr,
1552                                 OldConnection->Endpoint, NULL,
1553                                 OldConnection->AuthInfo, OldConnection->QOS);
1554   if (err == RPC_S_OK)
1555     rpcrt4_conn_handoff(OldConnection, *Connection);
1556   return err;
1557 }
1558
1559 RPC_STATUS RPCRT4_DestroyConnection(RpcConnection* Connection)
1560 {
1561   TRACE("connection: %p\n", Connection);
1562
1563   RPCRT4_CloseConnection(Connection);
1564   RPCRT4_strfree(Connection->Endpoint);
1565   RPCRT4_strfree(Connection->NetworkAddr);
1566   HeapFree(GetProcessHeap(), 0, Connection->NetworkOptions);
1567   if (Connection->AuthInfo) RpcAuthInfo_Release(Connection->AuthInfo);
1568   if (Connection->QOS) RpcQualityOfService_Release(Connection->QOS);
1569
1570   /* server-only */
1571   if (Connection->server_binding) RPCRT4_ReleaseBinding(Connection->server_binding);
1572
1573   HeapFree(GetProcessHeap(), 0, Connection);
1574   return RPC_S_OK;
1575 }
1576
1577 RPC_STATUS RpcTransport_GetTopOfTower(unsigned char *tower_data,
1578                                       size_t *tower_size,
1579                                       const char *protseq,
1580                                       const char *networkaddr,
1581                                       const char *endpoint)
1582 {
1583     twr_empty_floor_t *protocol_floor;
1584     const struct connection_ops *protseq_ops = rpcrt4_get_conn_protseq_ops(protseq);
1585
1586     *tower_size = 0;
1587
1588     if (!protseq_ops)
1589         return RPC_S_INVALID_RPC_PROTSEQ;
1590
1591     if (!tower_data)
1592     {
1593         *tower_size = sizeof(*protocol_floor);
1594         *tower_size += protseq_ops->get_top_of_tower(NULL, networkaddr, endpoint);
1595         return RPC_S_OK;
1596     }
1597
1598     protocol_floor = (twr_empty_floor_t *)tower_data;
1599     protocol_floor->count_lhs = sizeof(protocol_floor->protid);
1600     protocol_floor->protid = protseq_ops->epm_protocols[0];
1601     protocol_floor->count_rhs = 0;
1602
1603     tower_data += sizeof(*protocol_floor);
1604
1605     *tower_size = protseq_ops->get_top_of_tower(tower_data, networkaddr, endpoint);
1606     if (!*tower_size)
1607         return EPT_S_NOT_REGISTERED;
1608
1609     *tower_size += sizeof(*protocol_floor);
1610
1611     return RPC_S_OK;
1612 }
1613
1614 RPC_STATUS RpcTransport_ParseTopOfTower(const unsigned char *tower_data,
1615                                         size_t tower_size,
1616                                         char **protseq,
1617                                         char **networkaddr,
1618                                         char **endpoint)
1619 {
1620     const twr_empty_floor_t *protocol_floor;
1621     const twr_empty_floor_t *floor4;
1622     const struct connection_ops *protseq_ops = NULL;
1623     RPC_STATUS status;
1624     unsigned int i;
1625
1626     if (tower_size < sizeof(*protocol_floor))
1627         return EPT_S_NOT_REGISTERED;
1628
1629     protocol_floor = (const twr_empty_floor_t *)tower_data;
1630     tower_data += sizeof(*protocol_floor);
1631     tower_size -= sizeof(*protocol_floor);
1632     if ((protocol_floor->count_lhs != sizeof(protocol_floor->protid)) ||
1633         (protocol_floor->count_rhs > tower_size))
1634         return EPT_S_NOT_REGISTERED;
1635     tower_data += protocol_floor->count_rhs;
1636     tower_size -= protocol_floor->count_rhs;
1637
1638     floor4 = (const twr_empty_floor_t *)tower_data;
1639     if ((tower_size < sizeof(*floor4)) ||
1640         (floor4->count_lhs != sizeof(floor4->protid)))
1641         return EPT_S_NOT_REGISTERED;
1642
1643     for(i = 0; i < ARRAYSIZE(conn_protseq_list); i++)
1644         if ((protocol_floor->protid == conn_protseq_list[i].epm_protocols[0]) &&
1645             (floor4->protid == conn_protseq_list[i].epm_protocols[1]))
1646         {
1647             protseq_ops = &conn_protseq_list[i];
1648             break;
1649         }
1650
1651     if (!protseq_ops)
1652         return EPT_S_NOT_REGISTERED;
1653
1654     status = protseq_ops->parse_top_of_tower(tower_data, tower_size, networkaddr, endpoint);
1655
1656     if ((status == RPC_S_OK) && protseq)
1657     {
1658         *protseq = I_RpcAllocate(strlen(protseq_ops->name) + 1);
1659         strcpy(*protseq, protseq_ops->name);
1660     }
1661
1662     return status;
1663 }
1664
1665 /***********************************************************************
1666  *             RpcNetworkIsProtseqValidW (RPCRT4.@)
1667  *
1668  * Checks if the given protocol sequence is known by the RPC system.
1669  * If it is, returns RPC_S_OK, otherwise RPC_S_PROTSEQ_NOT_SUPPORTED.
1670  *
1671  */
1672 RPC_STATUS WINAPI RpcNetworkIsProtseqValidW(RPC_WSTR protseq)
1673 {
1674   char ps[0x10];
1675
1676   WideCharToMultiByte(CP_ACP, 0, protseq, -1,
1677                       ps, sizeof ps, NULL, NULL);
1678   if (rpcrt4_get_conn_protseq_ops(ps))
1679     return RPC_S_OK;
1680
1681   FIXME("Unknown protseq %s\n", debugstr_w(protseq));
1682
1683   return RPC_S_INVALID_RPC_PROTSEQ;
1684 }
1685
1686 /***********************************************************************
1687  *             RpcNetworkIsProtseqValidA (RPCRT4.@)
1688  */
1689 RPC_STATUS WINAPI RpcNetworkIsProtseqValidA(RPC_CSTR protseq)
1690 {
1691   UNICODE_STRING protseqW;
1692
1693   if (RtlCreateUnicodeStringFromAsciiz(&protseqW, (char*)protseq))
1694   {
1695     RPC_STATUS ret = RpcNetworkIsProtseqValidW(protseqW.Buffer);
1696     RtlFreeUnicodeString(&protseqW);
1697     return ret;
1698   }
1699   return RPC_S_OUT_OF_MEMORY;
1700 }