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 <errno.h>
  33
  34 #ifdef HAVE_UNISTD_H
  35 # include <unistd.h>
  36 #endif
  37 #include <fcntl.h>
  38 #include <stdlib.h>
  39 #include <sys/types.h>
  40 #ifdef HAVE_SYS_SOCKET_H
  41 # include <sys/socket.h>
  42 #endif
  43 #ifdef HAVE_NETINET_IN_H
  44 # include <netinet/in.h>
  45 #endif
  46 #ifdef HAVE_ARPA_INET_H
  47 # include <arpa/inet.h>
  48 #endif
  49 #ifdef HAVE_NETDB_H
  50 #include <netdb.h>
  51 #endif
  52 #ifdef HAVE_SYS_POLL_H
  53 #include <sys/poll.h>
  54 #endif
  55
  56 #include "windef.h"
  57 #include "winbase.h"
  58 #include "winnls.h"
  59 #include "winerror.h"
  60 #include "winreg.h"
  61 #include "winternl.h"
  62 #include "wine/unicode.h"
  63
  64 #include "rpc.h"
  65 #include "rpcndr.h"
  66
  67 #include "wine/debug.h"
  68
  69 #include "rpc_binding.h"
  70 #include "rpc_message.h"
  71 #include "rpc_server.h"
  72 #include "epm_towers.h"
  73
  74 WINE_DEFAULT_DEBUG_CHANNEL(rpc);
  75
  76 static CRITICAL_SECTION connection_pool_cs;
  77 static CRITICAL_SECTION_DEBUG connection_pool_cs_debug =
  78 {
  79     0, 0, &connection_pool_cs,
  80     { &connection_pool_cs_debug.ProcessLocksList, &connection_pool_cs_debug.ProcessLocksList },
  81       0, 0, { (DWORD_PTR)(__FILE__ ": connection_pool") }
  82 };
  83 static CRITICAL_SECTION connection_pool_cs = { &connection_pool_cs_debug, -1, 0, 0, 0, 0 };
  84
  85 static struct list connection_pool = LIST_INIT(connection_pool);
  86
  87 /**** ncacn_np support ****/
  88
  89 typedef struct _RpcConnection_np
  90 {
  91   RpcConnection common;
  92   HANDLE pipe, thread;
  93   OVERLAPPED ovl;
  94 } RpcConnection_np;
  95
  96 static RpcConnection *rpcrt4_conn_np_alloc(void)
  97 {
  98   RpcConnection_np *npc = HeapAlloc(GetProcessHeap(), 0, sizeof(RpcConnection_np));
  99   if (npc)
 100   {
 101     npc->pipe = NULL;
 102     npc->thread = NULL;
 103     memset(&npc->ovl, 0, sizeof(npc->ovl));
 104   }
 105   return &npc->common;
 106 }
 107
 108 static RPC_STATUS rpcrt4_connect_pipe(RpcConnection *Connection, LPCSTR pname)
 109 {
 110   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 111   TRACE("listening on %s\n", pname);
 112
 113   npc->pipe = CreateNamedPipeA(pname, PIPE_ACCESS_DUPLEX,
 114                                PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE,
 115                                PIPE_UNLIMITED_INSTANCES,
 116                                RPC_MAX_PACKET_SIZE, RPC_MAX_PACKET_SIZE, 5000, NULL);
 117   if (npc->pipe == INVALID_HANDLE_VALUE) {
 118     WARN("CreateNamedPipe failed with error %ld\n", GetLastError());
 119     return RPC_S_SERVER_UNAVAILABLE;
 120   }
 121
 122   memset(&npc->ovl, 0, sizeof(npc->ovl));
 123   npc->ovl.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
 124   if (ConnectNamedPipe(npc->pipe, &npc->ovl))
 125      return RPC_S_OK;
 126
 127   WARN("Couldn't ConnectNamedPipe (error was %ld)\n", GetLastError());
 128   if (GetLastError() == ERROR_PIPE_CONNECTED) {
 129     SetEvent(npc->ovl.hEvent);
 130     return RPC_S_OK;
 131   }
 132   if (GetLastError() == ERROR_IO_PENDING) {
 133     /* FIXME: looks like we need to GetOverlappedResult here? */
 134     return RPC_S_OK;
 135   }
 136   return RPC_S_SERVER_UNAVAILABLE;
 137 }
 138
 139 static RPC_STATUS rpcrt4_open_pipe(RpcConnection *Connection, LPCSTR pname, BOOL wait)
 140 {
 141   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 142   HANDLE pipe;
 143   DWORD err, dwMode;
 144
 145   TRACE("connecting to %s\n", pname);
 146
 147   while (TRUE) {
 148     pipe = CreateFileA(pname, GENERIC_READ|GENERIC_WRITE, 0, NULL,
 149                        OPEN_EXISTING, 0, 0);
 150     if (pipe != INVALID_HANDLE_VALUE) break;
 151     err = GetLastError();
 152     if (err == ERROR_PIPE_BUSY) {
 153       TRACE("connection failed, error=%lx\n", err);
 154       return RPC_S_SERVER_TOO_BUSY;
 155     }
 156     if (!wait)
 157       return RPC_S_SERVER_UNAVAILABLE;
 158     if (!WaitNamedPipeA(pname, NMPWAIT_WAIT_FOREVER)) {
 159       err = GetLastError();
 160       WARN("connection failed, error=%lx\n", err);
 161       return RPC_S_SERVER_UNAVAILABLE;
 162     }
 163   }
 164
 165   /* success */
 166   memset(&npc->ovl, 0, sizeof(npc->ovl));
 167   /* pipe is connected; change to message-read mode. */
 168   dwMode = PIPE_READMODE_MESSAGE;
 169   SetNamedPipeHandleState(pipe, &dwMode, NULL, NULL);
 170   npc->ovl.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
 171   npc->pipe = pipe;
 172
 173   return RPC_S_OK;
 174 }
 175
 176 static RPC_STATUS rpcrt4_ncalrpc_open(RpcConnection* Connection)
 177 {
 178   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 179   static LPCSTR prefix = "\\\\.\\pipe\\lrpc\\";
 180   RPC_STATUS r;
 181   LPSTR pname;
 182
 183   /* already connected? */
 184   if (npc->pipe)
 185     return RPC_S_OK;
 186
 187   /* protseq=ncalrpc: supposed to use NT LPC ports,
 188    * but we'll implement it with named pipes for now */
 189   pname = I_RpcAllocate(strlen(prefix) + strlen(Connection->Endpoint) + 1);
 190   strcat(strcpy(pname, prefix), Connection->Endpoint);
 191
 192   if (Connection->server)
 193     r = rpcrt4_connect_pipe(Connection, pname);
 194   else
 195     r = rpcrt4_open_pipe(Connection, pname, TRUE);
 196   I_RpcFree(pname);
 197
 198   return r;
 199 }
 200
 201 static RPC_STATUS rpcrt4_ncacn_np_open(RpcConnection* Connection)
 202 {
 203   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 204   static LPCSTR prefix = "\\\\.";
 205   RPC_STATUS r;
 206   LPSTR pname;
 207
 208   /* already connected? */
 209   if (npc->pipe)
 210     return RPC_S_OK;
 211
 212   /* protseq=ncacn_np: named pipes */
 213   pname = I_RpcAllocate(strlen(prefix) + strlen(Connection->Endpoint) + 1);
 214   strcat(strcpy(pname, prefix), Connection->Endpoint);
 215   if (Connection->server)
 216     r = rpcrt4_connect_pipe(Connection, pname);
 217   else
 218     r = rpcrt4_open_pipe(Connection, pname, FALSE);
 219   I_RpcFree(pname);
 220
 221   return r;
 222 }
 223
 224 static HANDLE rpcrt4_conn_np_get_connect_event(RpcConnection *Connection)
 225 {
 226   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 227   return npc->ovl.hEvent;
 228 }
 229
 230 static RPC_STATUS rpcrt4_conn_np_handoff(RpcConnection *old_conn, RpcConnection *new_conn)
 231 {
 232   RpcConnection_np *old_npc = (RpcConnection_np *) old_conn;
 233   RpcConnection_np *new_npc = (RpcConnection_np *) new_conn;
 234   /* because of the way named pipes work, we'll transfer the connected pipe
 235    * to the child, then reopen the server binding to continue listening */
 236
 237   new_npc->pipe = old_npc->pipe;
 238   new_npc->ovl = old_npc->ovl;
 239   old_npc->pipe = 0;
 240   memset(&old_npc->ovl, 0, sizeof(old_npc->ovl));
 241   return RPCRT4_OpenConnection(old_conn);
 242 }
 243
 244 static int rpcrt4_conn_np_read(RpcConnection *Connection,
 245                         void *buffer, unsigned int count)
 246 {
 247   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 248   DWORD dwRead = 0;
 249   if (!ReadFile(npc->pipe, buffer, count, &dwRead, NULL) &&
 250       (GetLastError() != ERROR_MORE_DATA))
 251     return -1;
 252   return dwRead;
 253 }
 254
 255 static int rpcrt4_conn_np_write(RpcConnection *Connection,
 256                              const void *buffer, unsigned int count)
 257 {
 258   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 259   DWORD dwWritten = 0;
 260   if (!WriteFile(npc->pipe, buffer, count, &dwWritten, NULL))
 261     return -1;
 262   return dwWritten;
 263 }
 264
 265 static int rpcrt4_conn_np_close(RpcConnection *Connection)
 266 {
 267   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 268   if (npc->pipe) {
 269     FlushFileBuffers(npc->pipe);
 270     CloseHandle(npc->pipe);
 271     npc->pipe = 0;
 272   }
 273   if (npc->ovl.hEvent) {
 274     CloseHandle(npc->ovl.hEvent);
 275     npc->ovl.hEvent = 0;
 276   }
 277   return 0;
 278 }
 279
 280 static size_t rpcrt4_ncacn_np_get_top_of_tower(unsigned char *tower_data,
 281                                                const char *networkaddr,
 282                                                const char *endpoint)
 283 {
 284     twr_empty_floor_t *smb_floor;
 285     twr_empty_floor_t *nb_floor;
 286     size_t size;
 287     size_t networkaddr_size;
 288     size_t endpoint_size;
 289
 290     TRACE("(%p, %s, %s)\n", tower_data, networkaddr, endpoint);
 291
 292     networkaddr_size = strlen(networkaddr) + 1;
 293     endpoint_size = strlen(endpoint) + 1;
 294     size = sizeof(*smb_floor) + endpoint_size + sizeof(*nb_floor) + networkaddr_size;
 295
 296     if (!tower_data)
 297         return size;
 298
 299     smb_floor = (twr_empty_floor_t *)tower_data;
 300
 301     tower_data += sizeof(*smb_floor);
 302
 303     smb_floor->count_lhs = sizeof(smb_floor->protid);
 304     smb_floor->protid = EPM_PROTOCOL_SMB;
 305     smb_floor->count_rhs = endpoint_size;
 306
 307     memcpy(tower_data, endpoint, endpoint_size);
 308     tower_data += endpoint_size;
 309
 310     nb_floor = (twr_empty_floor_t *)tower_data;
 311
 312     tower_data += sizeof(*nb_floor);
 313
 314     nb_floor->count_lhs = sizeof(nb_floor->protid);
 315     nb_floor->protid = EPM_PROTOCOL_NETBIOS;
 316     nb_floor->count_rhs = networkaddr_size;
 317
 318     memcpy(tower_data, networkaddr, networkaddr_size);
 319     tower_data += networkaddr_size;
 320
 321     return size;
 322 }
 323
 324 static RPC_STATUS rpcrt4_ncacn_np_parse_top_of_tower(const unsigned char *tower_data,
 325                                                      size_t tower_size,
 326                                                      char **networkaddr,
 327                                                      char **endpoint)
 328 {
 329     const twr_empty_floor_t *smb_floor = (const twr_empty_floor_t *)tower_data;
 330     const twr_empty_floor_t *nb_floor;
 331
 332     TRACE("(%p, %d, %p, %p)\n", tower_data, (int)tower_size, networkaddr, endpoint);
 333
 334     if (tower_size < sizeof(*smb_floor))
 335         return EPT_S_NOT_REGISTERED;
 336
 337     tower_data += sizeof(*smb_floor);
 338     tower_size -= sizeof(*smb_floor);
 339
 340     if ((smb_floor->count_lhs != sizeof(smb_floor->protid)) ||
 341         (smb_floor->protid != EPM_PROTOCOL_SMB) ||
 342         (smb_floor->count_rhs > tower_size))
 343         return EPT_S_NOT_REGISTERED;
 344
 345     if (endpoint)
 346     {
 347         *endpoint = I_RpcAllocate(smb_floor->count_rhs);
 348         if (!*endpoint)
 349             return RPC_S_OUT_OF_RESOURCES;
 350         memcpy(*endpoint, tower_data, smb_floor->count_rhs);
 351     }
 352     tower_data += smb_floor->count_rhs;
 353     tower_size -= smb_floor->count_rhs;
 354
 355     if (tower_size < sizeof(*nb_floor))
 356         return EPT_S_NOT_REGISTERED;
 357
 358     nb_floor = (const twr_empty_floor_t *)tower_data;
 359
 360     tower_data += sizeof(*nb_floor);
 361     tower_size -= sizeof(*nb_floor);
 362
 363     if ((nb_floor->count_lhs != sizeof(nb_floor->protid)) ||
 364         (nb_floor->protid != EPM_PROTOCOL_NETBIOS) ||
 365         (nb_floor->count_rhs > tower_size))
 366         return EPT_S_NOT_REGISTERED;
 367
 368     if (networkaddr)
 369     {
 370         *networkaddr = I_RpcAllocate(nb_floor->count_rhs);
 371         if (!*networkaddr)
 372         {
 373             if (endpoint)
 374             {
 375                 I_RpcFree(*endpoint);
 376                 *endpoint = NULL;
 377             }
 378             return RPC_S_OUT_OF_RESOURCES;
 379         }
 380         memcpy(*networkaddr, tower_data, nb_floor->count_rhs);
 381     }
 382
 383     return RPC_S_OK;
 384 }
 385
 386 typedef struct _RpcServerProtseq_np
 387 {
 388     RpcServerProtseq common;
 389     HANDLE mgr_event;
 390 } RpcServerProtseq_np;
 391
 392 static RpcServerProtseq *rpcrt4_protseq_np_alloc(void)
 393 {
 394     RpcServerProtseq_np *ps = HeapAlloc(GetProcessHeap(), 0, sizeof(*ps));
 395     if (ps)
 396         ps->mgr_event = CreateEventW(NULL, FALSE, FALSE, NULL);
 397     return &ps->common;
 398 }
 399
 400 static void rpcrt4_protseq_np_signal_state_changed(RpcServerProtseq *protseq)
 401 {
 402     RpcServerProtseq_np *npps = CONTAINING_RECORD(protseq, RpcServerProtseq_np, common);
 403     SetEvent(npps->mgr_event);
 404 }
 405
 406 static void *rpcrt4_protseq_np_get_wait_array(RpcServerProtseq *protseq, void *prev_array, unsigned int *count)
 407 {
 408     HANDLE *objs = prev_array;
 409     RpcConnection* conn;
 410     RpcServerProtseq_np *npps = CONTAINING_RECORD(protseq, RpcServerProtseq_np, common);
 411
 412     EnterCriticalSection(&protseq->cs);
 413
 414     /* open and count connections */
 415     *count = 1;
 416     conn = protseq->conn;
 417     while (conn) {
 418         RPCRT4_OpenConnection(conn);
 419         if (rpcrt4_conn_get_wait_object(conn))
 420             (*count)++;
 421         conn = conn->Next;
 422     }
 423
 424     /* make array of connections */
 425     if (objs)
 426         objs = HeapReAlloc(GetProcessHeap(), 0, objs, *count*sizeof(HANDLE));
 427     else
 428         objs = HeapAlloc(GetProcessHeap(), 0, *count*sizeof(HANDLE));
 429     if (!objs)
 430     {
 431         ERR("couldn't allocate objs\n");
 432         LeaveCriticalSection(&protseq->cs);
 433         return NULL;
 434     }
 435
 436     objs[0] = npps->mgr_event;
 437     *count = 1;
 438     conn = protseq->conn;
 439     while (conn) {
 440         if ((objs[*count] = rpcrt4_conn_get_wait_object(conn)))
 441             (*count)++;
 442         conn = conn->Next;
 443     }
 444     LeaveCriticalSection(&protseq->cs);
 445     return objs;
 446 }
 447
 448 static void rpcrt4_protseq_np_free_wait_array(RpcServerProtseq *protseq, void *array)
 449 {
 450     HeapFree(GetProcessHeap(), 0, array);
 451 }
 452
 453 static int rpcrt4_protseq_np_wait_for_new_connection(RpcServerProtseq *protseq, unsigned int count, void *wait_array)
 454 {
 455     HANDLE b_handle;
 456     HANDLE *objs = wait_array;
 457     DWORD res;
 458     RpcConnection* cconn;
 459     RpcConnection* conn;
 460
 461     if (!objs)
 462         return -1;
 463
 464     res = WaitForMultipleObjects(count, objs, FALSE, INFINITE);
 465     if (res == WAIT_OBJECT_0)
 466         return 0;
 467     else if (res == WAIT_FAILED)
 468     {
 469         ERR("wait failed with error %ld\n", GetLastError());
 470         return -1;
 471     }
 472     else
 473     {
 474         b_handle = objs[res - WAIT_OBJECT_0];
 475         /* find which connection got a RPC */
 476         EnterCriticalSection(&protseq->cs);
 477         conn = protseq->conn;
 478         while (conn) {
 479             if (b_handle == rpcrt4_conn_get_wait_object(conn)) break;
 480             conn = conn->Next;
 481         }
 482         cconn = NULL;
 483         if (conn)
 484             RPCRT4_SpawnConnection(&cconn, conn);
 485         else
 486             ERR("failed to locate connection for handle %p\n", b_handle);
 487         LeaveCriticalSection(&protseq->cs);
 488         if (cconn)
 489         {
 490             RPCRT4_new_client(cconn);
 491             return 1;
 492         }
 493         else return -1;
 494     }
 495 }
 496
 497 static size_t rpcrt4_ncalrpc_get_top_of_tower(unsigned char *tower_data,
 498                                               const char *networkaddr,
 499                                               const char *endpoint)
 500 {
 501     twr_empty_floor_t *pipe_floor;
 502     size_t size;
 503     size_t endpoint_size;
 504
 505     TRACE("(%p, %s, %s)\n", tower_data, networkaddr, endpoint);
 506
 507     endpoint_size = strlen(networkaddr) + 1;
 508     size = sizeof(*pipe_floor) + endpoint_size;
 509
 510     if (!tower_data)
 511         return size;
 512
 513     pipe_floor = (twr_empty_floor_t *)tower_data;
 514
 515     tower_data += sizeof(*pipe_floor);
 516
 517     pipe_floor->count_lhs = sizeof(pipe_floor->protid);
 518     pipe_floor->protid = EPM_PROTOCOL_SMB;
 519     pipe_floor->count_rhs = endpoint_size;
 520
 521     memcpy(tower_data, endpoint, endpoint_size);
 522     tower_data += endpoint_size;
 523
 524     return size;
 525 }
 526
 527 static RPC_STATUS rpcrt4_ncalrpc_parse_top_of_tower(const unsigned char *tower_data,
 528                                                     size_t tower_size,
 529                                                     char **networkaddr,
 530                                                     char **endpoint)
 531 {
 532     const twr_empty_floor_t *pipe_floor = (const twr_empty_floor_t *)tower_data;
 533
 534     TRACE("(%p, %d, %p, %p)\n", tower_data, (int)tower_size, networkaddr, endpoint);
 535
 536     *networkaddr = NULL;
 537     *endpoint = NULL;
 538
 539     if (tower_size < sizeof(*pipe_floor))
 540         return EPT_S_NOT_REGISTERED;
 541
 542     tower_data += sizeof(*pipe_floor);
 543     tower_size -= sizeof(*pipe_floor);
 544
 545     if ((pipe_floor->count_lhs != sizeof(pipe_floor->protid)) ||
 546         (pipe_floor->protid != EPM_PROTOCOL_SMB) ||
 547         (pipe_floor->count_rhs > tower_size))
 548         return EPT_S_NOT_REGISTERED;
 549
 550     if (endpoint)
 551     {
 552         *endpoint = I_RpcAllocate(pipe_floor->count_rhs);
 553         if (!*endpoint)
 554             return RPC_S_OUT_OF_RESOURCES;
 555         memcpy(*endpoint, tower_data, pipe_floor->count_rhs);
 556     }
 557
 558     return RPC_S_OK;
 559 }
 560
 561 /**** ncacn_ip_tcp support ****/
 562
 563 typedef struct _RpcConnection_tcp
 564 {
 565   RpcConnection common;
 566   int sock;
 567   HANDLE onEventAvailable;
 568   HANDLE onEventHandled;
 569   BOOL quit;
 570 } RpcConnection_tcp;
 571
 572 static DWORD WINAPI rpcrt4_tcp_poll_thread(LPVOID arg)
 573 {
 574   RpcConnection_tcp *tcpc;
 575   int ret;
 576   struct pollfd pollInfo;
 577
 578   tcpc = (RpcConnection_tcp*) arg;
 579   pollInfo.fd = tcpc->sock;
 580   pollInfo.events = POLLIN;
 581
 582   while (!tcpc->quit)
 583   {
 584     ret = poll(&pollInfo, 1, 1000);
 585     if (ret < 0)
 586       ERR("poll failed with error %d\n", ret);
 587     else
 588     {
 589       if (pollInfo.revents & POLLIN)
 590       {
 591         SignalObjectAndWait(tcpc->onEventAvailable,
 592           tcpc->onEventHandled, INFINITE, FALSE);
 593       }
 594     }
 595   }
 596
 597   /* This avoids the tcpc being destroyed before we are done with it */
 598   SetEvent(tcpc->onEventAvailable);
 599
 600   return 0;
 601 }
 602
 603 static RpcConnection *rpcrt4_conn_tcp_alloc(void)
 604 {
 605   RpcConnection_tcp *tcpc;
 606   tcpc = HeapAlloc(GetProcessHeap(), 0, sizeof(RpcConnection_tcp));
 607   if (tcpc == NULL)
 608     return NULL;
 609   tcpc->sock = -1;
 610   tcpc->onEventAvailable = NULL;
 611   tcpc->onEventHandled = NULL;
 612   tcpc->quit = FALSE;
 613   return &tcpc->common;
 614 }
 615
 616 static RPC_STATUS rpcrt4_ncacn_ip_tcp_open(RpcConnection* Connection)
 617 {
 618   RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
 619   int sock;
 620   int ret;
 621   struct addrinfo *ai;
 622   struct addrinfo *ai_cur;
 623   struct addrinfo hints;
 624
 625   TRACE("(%s, %s)\n", Connection->NetworkAddr, Connection->Endpoint);
 626
 627   if (tcpc->sock != -1)
 628     return RPC_S_OK;
 629
 630   hints.ai_flags          = 0;
 631   hints.ai_family         = PF_UNSPEC;
 632   hints.ai_socktype       = SOCK_STREAM;
 633   hints.ai_protocol       = IPPROTO_TCP;
 634   hints.ai_addrlen        = 0;
 635   hints.ai_addr           = NULL;
 636   hints.ai_canonname      = NULL;
 637   hints.ai_next           = NULL;
 638
 639   ret = getaddrinfo(Connection->NetworkAddr, Connection->Endpoint, &hints, &ai);
 640   if (ret)
 641   {
 642     ERR("getaddrinfo failed: %s\n", gai_strerror(ret));
 643     return RPC_S_SERVER_UNAVAILABLE;
 644   }
 645
 646   for (ai_cur = ai; ai_cur; ai_cur = ai->ai_next)
 647   {
 648     if (TRACE_ON(rpc))
 649     {
 650       char host[256];
 651       char service[256];
 652       getnameinfo(ai_cur->ai_addr, ai_cur->ai_addrlen,
 653         host, sizeof(host), service, sizeof(service),
 654         NI_NUMERICHOST | NI_NUMERICSERV);
 655       TRACE("trying %s:%s\n", host, service);
 656     }
 657
 658     sock = socket(ai_cur->ai_family, ai_cur->ai_socktype, ai_cur->ai_protocol);
 659     if (sock < 0)
 660     {
 661       WARN("socket() failed\n");
 662       continue;
 663     }
 664
 665     if (Connection->server)
 666     {
 667       HANDLE thread = NULL;
 668       ret = bind(sock, ai_cur->ai_addr, ai_cur->ai_addrlen);
 669       if (ret < 0)
 670       {
 671         WARN("bind failed, error %d\n", ret);
 672         goto done;
 673       }
 674       ret = listen(sock, 10);
 675       if (ret < 0)
 676       {
 677         WARN("listen failed, error %d\n", ret);
 678         goto done;
 679       }
 680       /* need a non-blocking socket, otherwise accept() has a potential
 681        * race-condition (poll() says it is readable, connection drops,
 682        * and accept() blocks until the next connection comes...)
 683        */
 684       ret = fcntl(sock, F_SETFL, O_NONBLOCK);
 685       if (ret < 0)
 686       {
 687         WARN("couldn't make socket non-blocking, error %d\n", ret);
 688         goto done;
 689       }
 690       tcpc->onEventAvailable = CreateEventW(NULL, FALSE, FALSE, NULL);
 691       if (tcpc->onEventAvailable == NULL)
 692       {
 693         WARN("creating available event failed, error %lu\n", GetLastError());
 694         goto done;
 695       }
 696       tcpc->onEventHandled = CreateEventW(NULL, FALSE, FALSE, NULL);
 697       if (tcpc->onEventHandled == NULL)
 698       {
 699         WARN("creating handled event failed, error %lu\n", GetLastError());
 700         goto done;
 701       }
 702       tcpc->sock = sock;
 703       thread = CreateThread(NULL, 0, rpcrt4_tcp_poll_thread, tcpc, 0, NULL);
 704       if (thread == NULL)
 705       {
 706         WARN("creating server polling thread failed, error %lu\n",
 707           GetLastError());
 708         tcpc->sock = -1;
 709         goto done;
 710       }
 711       CloseHandle(thread);
 712
 713     done:
 714       if (thread == NULL) /* ie. we failed somewhere */
 715       {
 716         close(sock);
 717         if (tcpc->onEventAvailable != NULL)
 718         {
 719           CloseHandle(tcpc->onEventAvailable);
 720           tcpc->onEventAvailable = NULL;
 721         }
 722         if (tcpc->onEventHandled != NULL)
 723         {
 724           CloseHandle(tcpc->onEventHandled);
 725           tcpc->onEventHandled = NULL;
 726         }
 727         continue;
 728       }
 729     }
 730     else /* it's a client */
 731     {
 732       if (0>connect(sock, ai_cur->ai_addr, ai_cur->ai_addrlen))
 733       {
 734         WARN("connect() failed\n");
 735         close(sock);
 736         continue;
 737       }
 738       tcpc->sock = sock;
 739     }
 740
 741     freeaddrinfo(ai);
 742     TRACE("connected\n");
 743     return RPC_S_OK;
 744   }
 745
 746   freeaddrinfo(ai);
 747   ERR("couldn't connect to %s:%s\n", Connection->NetworkAddr, Connection->Endpoint);
 748   return RPC_S_SERVER_UNAVAILABLE;
 749 }
 750
 751 static HANDLE rpcrt4_conn_tcp_get_wait_handle(RpcConnection *Connection)
 752 {
 753   RpcConnection_tcp *tcpc = (RpcConnection_tcp*) Connection;
 754   return tcpc->onEventAvailable;
 755 }
 756
 757 static RPC_STATUS rpcrt4_conn_tcp_handoff(RpcConnection *old_conn, RpcConnection *new_conn)
 758 {
 759   int ret;
 760   struct sockaddr_in address;
 761   socklen_t addrsize;
 762   RpcConnection_tcp *server = (RpcConnection_tcp*) old_conn;
 763   RpcConnection_tcp *client = (RpcConnection_tcp*) new_conn;
 764
 765   addrsize = sizeof(address);
 766   ret = accept(server->sock, (struct sockaddr*) &address, &addrsize);
 767   SetEvent(server->onEventHandled);
 768   if (ret < 0)
 769   {
 770     ERR("Failed to accept a TCP connection: error %d\n", ret);
 771     return RPC_S_SERVER_UNAVAILABLE;
 772   }
 773   client->sock = ret;
 774   TRACE("Accepted a new TCP connection\n");
 775   return RPC_S_OK;
 776 }
 777
 778 static int rpcrt4_conn_tcp_read(RpcConnection *Connection,
 779                                 void *buffer, unsigned int count)
 780 {
 781   RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
 782   int r = recv(tcpc->sock, buffer, count, MSG_WAITALL);
 783   TRACE("%d %p %u -> %d\n", tcpc->sock, buffer, count, r);
 784   return r;
 785 }
 786
 787 static int rpcrt4_conn_tcp_write(RpcConnection *Connection,
 788                                  const void *buffer, unsigned int count)
 789 {
 790   RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
 791   int r = write(tcpc->sock, buffer, count);
 792   TRACE("%d %p %u -> %d\n", tcpc->sock, buffer, count, r);
 793   return r;
 794 }
 795
 796 static int rpcrt4_conn_tcp_close(RpcConnection *Connection)
 797 {
 798   RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
 799
 800   TRACE("%d\n", tcpc->sock);
 801
 802   if (tcpc->onEventAvailable != NULL)
 803   {
 804     /* it's a server connection */
 805     tcpc->quit = TRUE;
 806     WaitForSingleObject(tcpc->onEventAvailable, INFINITE);
 807     CloseHandle(tcpc->onEventAvailable);
 808     CloseHandle(tcpc->onEventHandled);
 809   }
 810
 811   if (tcpc->sock != -1)
 812     close(tcpc->sock);
 813   tcpc->sock = -1;
 814   return 0;
 815 }
 816
 817 static size_t rpcrt4_ncacn_ip_tcp_get_top_of_tower(unsigned char *tower_data,
 818                                                    const char *networkaddr,
 819                                                    const char *endpoint)
 820 {
 821     twr_tcp_floor_t *tcp_floor;
 822     twr_ipv4_floor_t *ipv4_floor;
 823     struct addrinfo *ai;
 824     struct addrinfo hints;
 825     int ret;
 826     size_t size = sizeof(*tcp_floor) + sizeof(*ipv4_floor);
 827
 828     TRACE("(%p, %s, %s)\n", tower_data, networkaddr, endpoint);
 829
 830     if (!tower_data)
 831         return size;
 832
 833     tcp_floor = (twr_tcp_floor_t *)tower_data;
 834     tower_data += sizeof(*tcp_floor);
 835
 836     ipv4_floor = (twr_ipv4_floor_t *)tower_data;
 837
 838     tcp_floor->count_lhs = sizeof(tcp_floor->protid);
 839     tcp_floor->protid = EPM_PROTOCOL_TCP;
 840     tcp_floor->count_rhs = sizeof(tcp_floor->port);
 841
 842     ipv4_floor->count_lhs = sizeof(ipv4_floor->protid);
 843     ipv4_floor->protid = EPM_PROTOCOL_IP;
 844     ipv4_floor->count_rhs = sizeof(ipv4_floor->ipv4addr);
 845
 846     hints.ai_flags          = AI_NUMERICHOST;
 847     /* FIXME: only support IPv4 at the moment. how is IPv6 represented by the EPM? */
 848     hints.ai_family         = PF_INET;
 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(networkaddr, endpoint, &hints, &ai);
 857     if (ret)
 858     {
 859         ret = getaddrinfo("0.0.0.0", endpoint, &hints, &ai);
 860         if (ret)
 861         {
 862             ERR("getaddrinfo failed: %s\n", gai_strerror(ret));
 863             return 0;
 864         }
 865     }
 866
 867     if (ai->ai_family == PF_INET)
 868     {
 869         const struct sockaddr_in *sin = (const struct sockaddr_in *)ai->ai_addr;
 870         tcp_floor->port = sin->sin_port;
 871         ipv4_floor->ipv4addr = sin->sin_addr.s_addr;
 872     }
 873     else
 874     {
 875         ERR("unexpected protocol family %d\n", ai->ai_family);
 876         return 0;
 877     }
 878
 879     freeaddrinfo(ai);
 880
 881     return size;
 882 }
 883
 884 static RPC_STATUS rpcrt4_ncacn_ip_tcp_parse_top_of_tower(const unsigned char *tower_data,
 885                                                          size_t tower_size,
 886                                                          char **networkaddr,
 887                                                          char **endpoint)
 888 {
 889     const twr_tcp_floor_t *tcp_floor = (const twr_tcp_floor_t *)tower_data;
 890     const twr_ipv4_floor_t *ipv4_floor;
 891     struct in_addr in_addr;
 892
 893     TRACE("(%p, %d, %p, %p)\n", tower_data, (int)tower_size, networkaddr, endpoint);
 894
 895     if (tower_size < sizeof(*tcp_floor))
 896         return EPT_S_NOT_REGISTERED;
 897
 898     tower_data += sizeof(*tcp_floor);
 899     tower_size -= sizeof(*tcp_floor);
 900
 901     if (tower_size < sizeof(*ipv4_floor))
 902         return EPT_S_NOT_REGISTERED;
 903
 904     ipv4_floor = (const twr_ipv4_floor_t *)tower_data;
 905
 906     if ((tcp_floor->count_lhs != sizeof(tcp_floor->protid)) ||
 907         (tcp_floor->protid != EPM_PROTOCOL_TCP) ||
 908         (tcp_floor->count_rhs != sizeof(tcp_floor->port)) ||
 909         (ipv4_floor->count_lhs != sizeof(ipv4_floor->protid)) ||
 910         (ipv4_floor->protid != EPM_PROTOCOL_IP) ||
 911         (ipv4_floor->count_rhs != sizeof(ipv4_floor->ipv4addr)))
 912         return EPT_S_NOT_REGISTERED;
 913
 914     if (endpoint)
 915     {
 916         *endpoint = I_RpcAllocate(6 /* sizeof("65535") + 1 */);
 917         if (!*endpoint)
 918             return RPC_S_OUT_OF_RESOURCES;
 919         sprintf(*endpoint, "%u", ntohs(tcp_floor->port));
 920     }
 921
 922     if (networkaddr)
 923     {
 924         *networkaddr = I_RpcAllocate(INET_ADDRSTRLEN);
 925         if (!*networkaddr)
 926         {
 927             if (endpoint)
 928             {
 929                 I_RpcFree(*endpoint);
 930                 *endpoint = NULL;
 931             }
 932             return RPC_S_OUT_OF_RESOURCES;
 933         }
 934         in_addr.s_addr = ipv4_floor->ipv4addr;
 935         if (!inet_ntop(AF_INET, &in_addr, *networkaddr, INET_ADDRSTRLEN))
 936         {
 937             ERR("inet_ntop: %s\n", strerror(errno));
 938             I_RpcFree(*networkaddr);
 939             *networkaddr = NULL;
 940             if (endpoint)
 941             {
 942                 I_RpcFree(*endpoint);
 943                 *endpoint = NULL;
 944             }
 945             return EPT_S_NOT_REGISTERED;
 946         }
 947     }
 948
 949     return RPC_S_OK;
 950 }
 951
 952 static const struct connection_ops conn_protseq_list[] = {
 953   { "ncacn_np",
 954     { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_SMB },
 955     rpcrt4_conn_np_alloc,
 956     rpcrt4_ncacn_np_open,
 957     rpcrt4_conn_np_get_connect_event,
 958     rpcrt4_conn_np_handoff,
 959     rpcrt4_conn_np_read,
 960     rpcrt4_conn_np_write,
 961     rpcrt4_conn_np_close,
 962     rpcrt4_ncacn_np_get_top_of_tower,
 963     rpcrt4_ncacn_np_parse_top_of_tower,
 964   },
 965   { "ncalrpc",
 966     { EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_PIPE },
 967     rpcrt4_conn_np_alloc,
 968     rpcrt4_ncalrpc_open,
 969     rpcrt4_conn_np_get_connect_event,
 970     rpcrt4_conn_np_handoff,
 971     rpcrt4_conn_np_read,
 972     rpcrt4_conn_np_write,
 973     rpcrt4_conn_np_close,
 974     rpcrt4_ncalrpc_get_top_of_tower,
 975     rpcrt4_ncalrpc_parse_top_of_tower,
 976   },
 977   { "ncacn_ip_tcp",
 978     { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_TCP },
 979     rpcrt4_conn_tcp_alloc,
 980     rpcrt4_ncacn_ip_tcp_open,
 981     rpcrt4_conn_tcp_get_wait_handle,
 982     rpcrt4_conn_tcp_handoff,
 983     rpcrt4_conn_tcp_read,
 984     rpcrt4_conn_tcp_write,
 985     rpcrt4_conn_tcp_close,
 986     rpcrt4_ncacn_ip_tcp_get_top_of_tower,
 987     rpcrt4_ncacn_ip_tcp_parse_top_of_tower,
 988   }
 989 };
 990
 991
 992 static const struct protseq_ops protseq_list[] =
 993 {
 994     {
 995         "ncacn_np",
 996         rpcrt4_protseq_np_alloc,
 997         rpcrt4_protseq_np_signal_state_changed,
 998         rpcrt4_protseq_np_get_wait_array,
 999         rpcrt4_protseq_np_free_wait_array,
1000         rpcrt4_protseq_np_wait_for_new_connection,
1001     },
1002     {
1003         "ncalrpc",
1004         rpcrt4_protseq_np_alloc,
1005         rpcrt4_protseq_np_signal_state_changed,
1006         rpcrt4_protseq_np_get_wait_array,
1007         rpcrt4_protseq_np_free_wait_array,
1008         rpcrt4_protseq_np_wait_for_new_connection,
1009     },
1010     {
1011         "ncacn_ip_tcp",
1012         rpcrt4_protseq_np_alloc,
1013         rpcrt4_protseq_np_signal_state_changed,
1014         rpcrt4_protseq_np_get_wait_array,
1015         rpcrt4_protseq_np_free_wait_array,
1016         rpcrt4_protseq_np_wait_for_new_connection,
1017     },
1018 };
1019
1020 #define ARRAYSIZE(a) (sizeof((a)) / sizeof((a)[0]))
1021
1022 const struct protseq_ops *rpcrt4_get_protseq_ops(const char *protseq)
1023 {
1024   int i;
1025   for(i=0; i<ARRAYSIZE(protseq_list); i++)
1026     if (!strcmp(protseq_list[i].name, protseq))
1027       return &protseq_list[i];
1028   return NULL;
1029 }
1030
1031 static const struct connection_ops *rpcrt4_get_conn_protseq_ops(const char *protseq)
1032 {
1033     int i;
1034     for(i=0; i<ARRAYSIZE(conn_protseq_list); i++)
1035         if (!strcmp(conn_protseq_list[i].name, protseq))
1036             return &conn_protseq_list[i];
1037     return NULL;
1038 }
1039
1040 /**** interface to rest of code ****/
1041
1042 RPC_STATUS RPCRT4_OpenConnection(RpcConnection* Connection)
1043 {
1044   TRACE("(Connection == ^%p)\n", Connection);
1045
1046   return Connection->ops->open_connection(Connection);
1047 }
1048
1049 RPC_STATUS RPCRT4_CloseConnection(RpcConnection* Connection)
1050 {
1051   TRACE("(Connection == ^%p)\n", Connection);
1052   rpcrt4_conn_close(Connection);
1053   return RPC_S_OK;
1054 }
1055
1056 RPC_STATUS RPCRT4_CreateConnection(RpcConnection** Connection, BOOL server,
1057     LPCSTR Protseq, LPCSTR NetworkAddr, LPCSTR Endpoint,
1058     LPCSTR NetworkOptions, RpcAuthInfo* AuthInfo, RpcBinding* Binding)
1059 {
1060   const struct connection_ops *ops;
1061   RpcConnection* NewConnection;
1062
1063   ops = rpcrt4_get_conn_protseq_ops(Protseq);
1064   if (!ops)
1065     return RPC_S_PROTSEQ_NOT_SUPPORTED;
1066
1067   NewConnection = ops->alloc();
1068   NewConnection->Next = NULL;
1069   NewConnection->server = server;
1070   NewConnection->ops = ops;
1071   NewConnection->NetworkAddr = RPCRT4_strdupA(NetworkAddr);
1072   NewConnection->Endpoint = RPCRT4_strdupA(Endpoint);
1073   NewConnection->Used = Binding;
1074   NewConnection->MaxTransmissionSize = RPC_MAX_PACKET_SIZE;
1075   memset(&NewConnection->ActiveInterface, 0, sizeof(NewConnection->ActiveInterface));
1076   NewConnection->NextCallId = 1;
1077
1078   memset(&NewConnection->ctx, 0, sizeof(NewConnection->ctx));
1079   if (AuthInfo) RpcAuthInfo_AddRef(AuthInfo);
1080   NewConnection->AuthInfo = AuthInfo;
1081   list_init(&NewConnection->conn_pool_entry);
1082
1083   TRACE("connection: %p\n", NewConnection);
1084   *Connection = NewConnection;
1085
1086   return RPC_S_OK;
1087 }
1088
1089 RpcConnection *RPCRT4_GetIdleConnection(const RPC_SYNTAX_IDENTIFIER *InterfaceId,
1090     const RPC_SYNTAX_IDENTIFIER *TransferSyntax, LPCSTR Protseq, LPCSTR NetworkAddr,
1091     LPCSTR Endpoint, RpcAuthInfo* AuthInfo)
1092 {
1093   RpcConnection *Connection;
1094   /* try to find a compatible connection from the connection pool */
1095   EnterCriticalSection(&connection_pool_cs);
1096   LIST_FOR_EACH_ENTRY(Connection, &connection_pool, RpcConnection, conn_pool_entry)
1097     if ((Connection->AuthInfo == AuthInfo) &&
1098         !memcmp(&Connection->ActiveInterface, InterfaceId,
1099            sizeof(RPC_SYNTAX_IDENTIFIER)) &&
1100         !strcmp(rpcrt4_conn_get_name(Connection), Protseq) &&
1101         !strcmp(Connection->NetworkAddr, NetworkAddr) &&
1102         !strcmp(Connection->Endpoint, Endpoint))
1103     {
1104       list_remove(&Connection->conn_pool_entry);
1105       LeaveCriticalSection(&connection_pool_cs);
1106       TRACE("got connection from pool %p\n", Connection);
1107       return Connection;
1108     }
1109
1110   LeaveCriticalSection(&connection_pool_cs);
1111   return NULL;
1112 }
1113
1114 void RPCRT4_ReleaseIdleConnection(RpcConnection *Connection)
1115 {
1116   assert(!Connection->server);
1117   EnterCriticalSection(&connection_pool_cs);
1118   list_add_head(&connection_pool, &Connection->conn_pool_entry);
1119   LeaveCriticalSection(&connection_pool_cs);
1120 }
1121
1122
1123 RPC_STATUS RPCRT4_SpawnConnection(RpcConnection** Connection, RpcConnection* OldConnection)
1124 {
1125   RPC_STATUS err;
1126
1127   err = RPCRT4_CreateConnection(Connection, OldConnection->server,
1128                                 rpcrt4_conn_get_name(OldConnection),
1129                                 OldConnection->NetworkAddr,
1130                                 OldConnection->Endpoint, NULL,
1131                                 OldConnection->AuthInfo, NULL);
1132   if (err == RPC_S_OK)
1133     rpcrt4_conn_handoff(OldConnection, *Connection);
1134   return err;
1135 }
1136
1137 RPC_STATUS RPCRT4_DestroyConnection(RpcConnection* Connection)
1138 {
1139   TRACE("connection: %p\n", Connection);
1140
1141   RPCRT4_CloseConnection(Connection);
1142   RPCRT4_strfree(Connection->Endpoint);
1143   RPCRT4_strfree(Connection->NetworkAddr);
1144   if (Connection->AuthInfo) RpcAuthInfo_Release(Connection->AuthInfo);
1145   HeapFree(GetProcessHeap(), 0, Connection);
1146   return RPC_S_OK;
1147 }
1148
1149 RPC_STATUS RpcTransport_GetTopOfTower(unsigned char *tower_data,
1150                                       size_t *tower_size,
1151                                       const char *protseq,
1152                                       const char *networkaddr,
1153                                       const char *endpoint)
1154 {
1155     twr_empty_floor_t *protocol_floor;
1156     const struct connection_ops *protseq_ops = rpcrt4_get_conn_protseq_ops(protseq);
1157
1158     *tower_size = 0;
1159
1160     if (!protseq_ops)
1161         return RPC_S_INVALID_RPC_PROTSEQ;
1162
1163     if (!tower_data)
1164     {
1165         *tower_size = sizeof(*protocol_floor);
1166         *tower_size += protseq_ops->get_top_of_tower(NULL, networkaddr, endpoint);
1167         return RPC_S_OK;
1168     }
1169
1170     protocol_floor = (twr_empty_floor_t *)tower_data;
1171     protocol_floor->count_lhs = sizeof(protocol_floor->protid);
1172     protocol_floor->protid = protseq_ops->epm_protocols[0];
1173     protocol_floor->count_rhs = 0;
1174
1175     tower_data += sizeof(*protocol_floor);
1176
1177     *tower_size = protseq_ops->get_top_of_tower(tower_data, networkaddr, endpoint);
1178     if (!*tower_size)
1179         return EPT_S_NOT_REGISTERED;
1180
1181     *tower_size += sizeof(*protocol_floor);
1182
1183     return RPC_S_OK;
1184 }
1185
1186 RPC_STATUS RpcTransport_ParseTopOfTower(const unsigned char *tower_data,
1187                                         size_t tower_size,
1188                                         char **protseq,
1189                                         char **networkaddr,
1190                                         char **endpoint)
1191 {
1192     const twr_empty_floor_t *protocol_floor;
1193     const twr_empty_floor_t *floor4;
1194     const struct connection_ops *protseq_ops = NULL;
1195     RPC_STATUS status;
1196     int i;
1197
1198     if (tower_size < sizeof(*protocol_floor))
1199         return EPT_S_NOT_REGISTERED;
1200
1201     protocol_floor = (const twr_empty_floor_t *)tower_data;
1202     tower_data += sizeof(*protocol_floor);
1203     tower_size -= sizeof(*protocol_floor);
1204     if ((protocol_floor->count_lhs != sizeof(protocol_floor->protid)) ||
1205         (protocol_floor->count_rhs > tower_size))
1206         return EPT_S_NOT_REGISTERED;
1207     tower_data += protocol_floor->count_rhs;
1208     tower_size -= protocol_floor->count_rhs;
1209
1210     floor4 = (const twr_empty_floor_t *)tower_data;
1211     if ((tower_size < sizeof(*floor4)) ||
1212         (floor4->count_lhs != sizeof(floor4->protid)))
1213         return EPT_S_NOT_REGISTERED;
1214
1215     for(i = 0; i < ARRAYSIZE(conn_protseq_list); i++)
1216         if ((protocol_floor->protid == conn_protseq_list[i].epm_protocols[0]) &&
1217             (floor4->protid == conn_protseq_list[i].epm_protocols[1]))
1218         {
1219             protseq_ops = &conn_protseq_list[i];
1220             break;
1221         }
1222
1223     if (!protseq_ops)
1224         return EPT_S_NOT_REGISTERED;
1225
1226     status = protseq_ops->parse_top_of_tower(tower_data, tower_size, networkaddr, endpoint);
1227
1228     if ((status == RPC_S_OK) && protseq)
1229     {
1230         *protseq = I_RpcAllocate(strlen(protseq_ops->name) + 1);
1231         strcpy(*protseq, protseq_ops->name);
1232     }
1233
1234     return status;
1235 }
1236
1237 /***********************************************************************
1238  *             RpcNetworkIsProtseqValidW (RPCRT4.@)
1239  *
1240  * Checks if the given protocol sequence is known by the RPC system.
1241  * If it is, returns RPC_S_OK, otherwise RPC_S_PROTSEQ_NOT_SUPPORTED.
1242  *
1243  */
1244 RPC_STATUS WINAPI RpcNetworkIsProtseqValidW(RPC_WSTR protseq)
1245 {
1246   char ps[0x10];
1247
1248   WideCharToMultiByte(CP_ACP, 0, protseq, -1,
1249                       ps, sizeof ps, NULL, NULL);
1250   if (rpcrt4_get_conn_protseq_ops(ps))
1251     return RPC_S_OK;
1252
1253   FIXME("Unknown protseq %s\n", debugstr_w(protseq));
1254
1255   return RPC_S_INVALID_RPC_PROTSEQ;
1256 }
1257
1258 /***********************************************************************
1259  *             RpcNetworkIsProtseqValidA (RPCRT4.@)
1260  */
1261 RPC_STATUS WINAPI RpcNetworkIsProtseqValidA(RPC_CSTR protseq)
1262 {
1263   UNICODE_STRING protseqW;
1264
1265   if (RtlCreateUnicodeStringFromAsciiz(&protseqW, (char*)protseq))
1266   {
1267     RPC_STATUS ret = RpcNetworkIsProtseqValidW(protseqW.Buffer);
1268     RtlFreeUnicodeString(&protseqW);
1269     return ret;
1270   }
1271   return RPC_S_OUT_OF_MEMORY;
1272 }