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;
  93   OVERLAPPED ovl;
  94   BOOL listening;
  95 } RpcConnection_np;
  96
  97 static RpcConnection *rpcrt4_conn_np_alloc(void)
  98 {
  99   RpcConnection_np *npc = HeapAlloc(GetProcessHeap(), 0, sizeof(RpcConnection_np));
 100   if (npc)
 101   {
 102     npc->pipe = NULL;
 103     memset(&npc->ovl, 0, sizeof(npc->ovl));
 104     npc->listening = FALSE;
 105   }
 106   return &npc->common;
 107 }
 108
 109 static RPC_STATUS rpcrt4_conn_listen_pipe(RpcConnection_np *npc)
 110 {
 111   if (npc->listening)
 112     return RPC_S_OK;
 113
 114   npc->listening = TRUE;
 115   if (ConnectNamedPipe(npc->pipe, &npc->ovl))
 116     return RPC_S_OK;
 117
 118   WARN("Couldn't ConnectNamedPipe (error was %ld)\n", GetLastError());
 119   if (GetLastError() == ERROR_PIPE_CONNECTED) {
 120     SetEvent(npc->ovl.hEvent);
 121     return RPC_S_OK;
 122   }
 123   if (GetLastError() == ERROR_IO_PENDING) {
 124     /* FIXME: looks like we need to GetOverlappedResult here? */
 125     return RPC_S_OK;
 126   }
 127   npc->listening = FALSE;
 128   return RPC_S_OUT_OF_RESOURCES;
 129 }
 130
 131 static RPC_STATUS rpcrt4_conn_create_pipe(RpcConnection *Connection, LPCSTR pname)
 132 {
 133   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 134   TRACE("listening on %s\n", pname);
 135
 136   npc->pipe = CreateNamedPipeA(pname, PIPE_ACCESS_DUPLEX,
 137                                PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE,
 138                                PIPE_UNLIMITED_INSTANCES,
 139                                RPC_MAX_PACKET_SIZE, RPC_MAX_PACKET_SIZE, 5000, NULL);
 140   if (npc->pipe == INVALID_HANDLE_VALUE) {
 141     WARN("CreateNamedPipe failed with error %ld\n", GetLastError());
 142     if (GetLastError() == ERROR_FILE_EXISTS)
 143       return RPC_S_DUPLICATE_ENDPOINT;
 144     else
 145       return RPC_S_CANT_CREATE_ENDPOINT;
 146   }
 147
 148   memset(&npc->ovl, 0, sizeof(npc->ovl));
 149   npc->ovl.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
 150
 151   /* Note: we don't call ConnectNamedPipe here because it must be done in the
 152    * server thread as the thread must be alertable */
 153   return RPC_S_OK;
 154 }
 155
 156 static RPC_STATUS rpcrt4_conn_open_pipe(RpcConnection *Connection, LPCSTR pname, BOOL wait)
 157 {
 158   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 159   HANDLE pipe;
 160   DWORD err, dwMode;
 161
 162   TRACE("connecting to %s\n", pname);
 163
 164   while (TRUE) {
 165     pipe = CreateFileA(pname, GENERIC_READ|GENERIC_WRITE, 0, NULL,
 166                        OPEN_EXISTING, 0, 0);
 167     if (pipe != INVALID_HANDLE_VALUE) break;
 168     err = GetLastError();
 169     if (err == ERROR_PIPE_BUSY) {
 170       TRACE("connection failed, error=%lx\n", err);
 171       return RPC_S_SERVER_TOO_BUSY;
 172     }
 173     if (!wait)
 174       return RPC_S_SERVER_UNAVAILABLE;
 175     if (!WaitNamedPipeA(pname, NMPWAIT_WAIT_FOREVER)) {
 176       err = GetLastError();
 177       WARN("connection failed, error=%lx\n", err);
 178       return RPC_S_SERVER_UNAVAILABLE;
 179     }
 180   }
 181
 182   /* success */
 183   memset(&npc->ovl, 0, sizeof(npc->ovl));
 184   /* pipe is connected; change to message-read mode. */
 185   dwMode = PIPE_READMODE_MESSAGE;
 186   SetNamedPipeHandleState(pipe, &dwMode, NULL, NULL);
 187   npc->ovl.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
 188   npc->pipe = pipe;
 189
 190   return RPC_S_OK;
 191 }
 192
 193 static RPC_STATUS rpcrt4_ncalrpc_open(RpcConnection* Connection)
 194 {
 195   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 196   static LPCSTR prefix = "\\\\.\\pipe\\lrpc\\";
 197   RPC_STATUS r;
 198   LPSTR pname;
 199
 200   /* already connected? */
 201   if (npc->pipe)
 202     return RPC_S_OK;
 203
 204   /* protseq=ncalrpc: supposed to use NT LPC ports,
 205    * but we'll implement it with named pipes for now */
 206   pname = I_RpcAllocate(strlen(prefix) + strlen(Connection->Endpoint) + 1);
 207   strcat(strcpy(pname, prefix), Connection->Endpoint);
 208   r = rpcrt4_conn_open_pipe(Connection, pname, TRUE);
 209   I_RpcFree(pname);
 210
 211   return r;
 212 }
 213
 214 static RPC_STATUS rpcrt4_protseq_ncalrpc_open_endpoint(RpcServerProtseq* protseq, LPSTR endpoint)
 215 {
 216   static LPCSTR prefix = "\\\\.\\pipe\\lrpc\\";
 217   RPC_STATUS r;
 218   LPSTR pname;
 219   RpcConnection *Connection;
 220
 221   r = RPCRT4_CreateConnection(&Connection, TRUE, protseq->Protseq, NULL,
 222                               endpoint, NULL, NULL, NULL);
 223   if (r != RPC_S_OK)
 224       return r;
 225
 226   /* protseq=ncalrpc: supposed to use NT LPC ports,
 227    * but we'll implement it with named pipes for now */
 228   pname = I_RpcAllocate(strlen(prefix) + strlen(Connection->Endpoint) + 1);
 229   strcat(strcpy(pname, prefix), Connection->Endpoint);
 230   r = rpcrt4_conn_create_pipe(Connection, pname);
 231   I_RpcFree(pname);
 232
 233   EnterCriticalSection(&protseq->cs);
 234   Connection->Next = protseq->conn;
 235   protseq->conn = Connection;
 236   LeaveCriticalSection(&protseq->cs);
 237
 238   return r;
 239 }
 240
 241 static RPC_STATUS rpcrt4_ncacn_np_open(RpcConnection* Connection)
 242 {
 243   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 244   static LPCSTR prefix = "\\\\.";
 245   RPC_STATUS r;
 246   LPSTR pname;
 247
 248   /* already connected? */
 249   if (npc->pipe)
 250     return RPC_S_OK;
 251
 252   /* protseq=ncacn_np: named pipes */
 253   pname = I_RpcAllocate(strlen(prefix) + strlen(Connection->Endpoint) + 1);
 254   strcat(strcpy(pname, prefix), Connection->Endpoint);
 255   r = rpcrt4_conn_open_pipe(Connection, pname, FALSE);
 256   I_RpcFree(pname);
 257
 258   return r;
 259 }
 260
 261 static RPC_STATUS rpcrt4_protseq_ncacn_np_open_endpoint(RpcServerProtseq *protseq, LPSTR endpoint)
 262 {
 263   static LPCSTR prefix = "\\\\.";
 264   RPC_STATUS r;
 265   LPSTR pname;
 266   RpcConnection *Connection;
 267
 268   r = RPCRT4_CreateConnection(&Connection, TRUE, protseq->Protseq, NULL,
 269                               endpoint, NULL, NULL, NULL);
 270   if (r != RPC_S_OK)
 271     return r;
 272
 273   /* protseq=ncacn_np: named pipes */
 274   pname = I_RpcAllocate(strlen(prefix) + strlen(Connection->Endpoint) + 1);
 275   strcat(strcpy(pname, prefix), Connection->Endpoint);
 276   r = rpcrt4_conn_create_pipe(Connection, pname);
 277   I_RpcFree(pname);
 278
 279   return r;
 280 }
 281
 282 static void rpcrt4_conn_np_handoff(RpcConnection_np *old_npc, RpcConnection_np *new_npc)
 283 {
 284   /* because of the way named pipes work, we'll transfer the connected pipe
 285    * to the child, then reopen the server binding to continue listening */
 286
 287   new_npc->pipe = old_npc->pipe;
 288   new_npc->ovl = old_npc->ovl;
 289   old_npc->pipe = 0;
 290   memset(&old_npc->ovl, 0, sizeof(old_npc->ovl));
 291   old_npc->listening = FALSE;
 292 }
 293
 294 static RPC_STATUS rpcrt4_ncacn_np_handoff(RpcConnection *old_conn, RpcConnection *new_conn)
 295 {
 296   RPC_STATUS status;
 297   LPSTR pname;
 298   static LPCSTR prefix = "\\\\.";
 299
 300   rpcrt4_conn_np_handoff((RpcConnection_np *)old_conn, (RpcConnection_np *)new_conn);
 301
 302   pname = I_RpcAllocate(strlen(prefix) + strlen(old_conn->Endpoint) + 1);
 303   strcat(strcpy(pname, prefix), old_conn->Endpoint);
 304   status = rpcrt4_conn_create_pipe(old_conn, pname);
 305   I_RpcFree(pname);
 306
 307   return status;
 308 }
 309
 310 static RPC_STATUS rpcrt4_ncalrpc_handoff(RpcConnection *old_conn, RpcConnection *new_conn)
 311 {
 312   RPC_STATUS status;
 313   LPSTR pname;
 314   static LPCSTR prefix = "\\\\.\\pipe\\lrpc\\";
 315
 316   TRACE("%s\n", old_conn->Endpoint);
 317
 318   rpcrt4_conn_np_handoff((RpcConnection_np *)old_conn, (RpcConnection_np *)new_conn);
 319
 320   pname = I_RpcAllocate(strlen(prefix) + strlen(old_conn->Endpoint) + 1);
 321   strcat(strcpy(pname, prefix), old_conn->Endpoint);
 322   status = rpcrt4_conn_create_pipe(old_conn, pname);
 323   I_RpcFree(pname);
 324
 325   return status;
 326 }
 327
 328 static int rpcrt4_conn_np_read(RpcConnection *Connection,
 329                         void *buffer, unsigned int count)
 330 {
 331   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 332   DWORD dwRead = 0;
 333   if (!ReadFile(npc->pipe, buffer, count, &dwRead, NULL) &&
 334       (GetLastError() != ERROR_MORE_DATA))
 335     return -1;
 336   return dwRead;
 337 }
 338
 339 static int rpcrt4_conn_np_write(RpcConnection *Connection,
 340                              const void *buffer, unsigned int count)
 341 {
 342   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 343   DWORD dwWritten = 0;
 344   if (!WriteFile(npc->pipe, buffer, count, &dwWritten, NULL))
 345     return -1;
 346   return dwWritten;
 347 }
 348
 349 static int rpcrt4_conn_np_close(RpcConnection *Connection)
 350 {
 351   RpcConnection_np *npc = (RpcConnection_np *) Connection;
 352   if (npc->pipe) {
 353     FlushFileBuffers(npc->pipe);
 354     CloseHandle(npc->pipe);
 355     npc->pipe = 0;
 356   }
 357   if (npc->ovl.hEvent) {
 358     CloseHandle(npc->ovl.hEvent);
 359     npc->ovl.hEvent = 0;
 360   }
 361   return 0;
 362 }
 363
 364 static size_t rpcrt4_ncacn_np_get_top_of_tower(unsigned char *tower_data,
 365                                                const char *networkaddr,
 366                                                const char *endpoint)
 367 {
 368     twr_empty_floor_t *smb_floor;
 369     twr_empty_floor_t *nb_floor;
 370     size_t size;
 371     size_t networkaddr_size;
 372     size_t endpoint_size;
 373
 374     TRACE("(%p, %s, %s)\n", tower_data, networkaddr, endpoint);
 375
 376     networkaddr_size = strlen(networkaddr) + 1;
 377     endpoint_size = strlen(endpoint) + 1;
 378     size = sizeof(*smb_floor) + endpoint_size + sizeof(*nb_floor) + networkaddr_size;
 379
 380     if (!tower_data)
 381         return size;
 382
 383     smb_floor = (twr_empty_floor_t *)tower_data;
 384
 385     tower_data += sizeof(*smb_floor);
 386
 387     smb_floor->count_lhs = sizeof(smb_floor->protid);
 388     smb_floor->protid = EPM_PROTOCOL_SMB;
 389     smb_floor->count_rhs = endpoint_size;
 390
 391     memcpy(tower_data, endpoint, endpoint_size);
 392     tower_data += endpoint_size;
 393
 394     nb_floor = (twr_empty_floor_t *)tower_data;
 395
 396     tower_data += sizeof(*nb_floor);
 397
 398     nb_floor->count_lhs = sizeof(nb_floor->protid);
 399     nb_floor->protid = EPM_PROTOCOL_NETBIOS;
 400     nb_floor->count_rhs = networkaddr_size;
 401
 402     memcpy(tower_data, networkaddr, networkaddr_size);
 403     tower_data += networkaddr_size;
 404
 405     return size;
 406 }
 407
 408 static RPC_STATUS rpcrt4_ncacn_np_parse_top_of_tower(const unsigned char *tower_data,
 409                                                      size_t tower_size,
 410                                                      char **networkaddr,
 411                                                      char **endpoint)
 412 {
 413     const twr_empty_floor_t *smb_floor = (const twr_empty_floor_t *)tower_data;
 414     const twr_empty_floor_t *nb_floor;
 415
 416     TRACE("(%p, %d, %p, %p)\n", tower_data, (int)tower_size, networkaddr, endpoint);
 417
 418     if (tower_size < sizeof(*smb_floor))
 419         return EPT_S_NOT_REGISTERED;
 420
 421     tower_data += sizeof(*smb_floor);
 422     tower_size -= sizeof(*smb_floor);
 423
 424     if ((smb_floor->count_lhs != sizeof(smb_floor->protid)) ||
 425         (smb_floor->protid != EPM_PROTOCOL_SMB) ||
 426         (smb_floor->count_rhs > tower_size))
 427         return EPT_S_NOT_REGISTERED;
 428
 429     if (endpoint)
 430     {
 431         *endpoint = I_RpcAllocate(smb_floor->count_rhs);
 432         if (!*endpoint)
 433             return RPC_S_OUT_OF_RESOURCES;
 434         memcpy(*endpoint, tower_data, smb_floor->count_rhs);
 435     }
 436     tower_data += smb_floor->count_rhs;
 437     tower_size -= smb_floor->count_rhs;
 438
 439     if (tower_size < sizeof(*nb_floor))
 440         return EPT_S_NOT_REGISTERED;
 441
 442     nb_floor = (const twr_empty_floor_t *)tower_data;
 443
 444     tower_data += sizeof(*nb_floor);
 445     tower_size -= sizeof(*nb_floor);
 446
 447     if ((nb_floor->count_lhs != sizeof(nb_floor->protid)) ||
 448         (nb_floor->protid != EPM_PROTOCOL_NETBIOS) ||
 449         (nb_floor->count_rhs > tower_size))
 450         return EPT_S_NOT_REGISTERED;
 451
 452     if (networkaddr)
 453     {
 454         *networkaddr = I_RpcAllocate(nb_floor->count_rhs);
 455         if (!*networkaddr)
 456         {
 457             if (endpoint)
 458             {
 459                 I_RpcFree(*endpoint);
 460                 *endpoint = NULL;
 461             }
 462             return RPC_S_OUT_OF_RESOURCES;
 463         }
 464         memcpy(*networkaddr, tower_data, nb_floor->count_rhs);
 465     }
 466
 467     return RPC_S_OK;
 468 }
 469
 470 typedef struct _RpcServerProtseq_np
 471 {
 472     RpcServerProtseq common;
 473     HANDLE mgr_event;
 474 } RpcServerProtseq_np;
 475
 476 static RpcServerProtseq *rpcrt4_protseq_np_alloc(void)
 477 {
 478     RpcServerProtseq_np *ps = HeapAlloc(GetProcessHeap(), 0, sizeof(*ps));
 479     if (ps)
 480         ps->mgr_event = CreateEventW(NULL, FALSE, FALSE, NULL);
 481     return &ps->common;
 482 }
 483
 484 static void rpcrt4_protseq_np_signal_state_changed(RpcServerProtseq *protseq)
 485 {
 486     RpcServerProtseq_np *npps = CONTAINING_RECORD(protseq, RpcServerProtseq_np, common);
 487     SetEvent(npps->mgr_event);
 488 }
 489
 490 static void *rpcrt4_protseq_np_get_wait_array(RpcServerProtseq *protseq, void *prev_array, unsigned int *count)
 491 {
 492     HANDLE *objs = prev_array;
 493     RpcConnection_np *conn;
 494     RpcServerProtseq_np *npps = CONTAINING_RECORD(protseq, RpcServerProtseq_np, common);
 495
 496     EnterCriticalSection(&protseq->cs);
 497
 498     /* open and count connections */
 499     *count = 1;
 500     conn = CONTAINING_RECORD(protseq->conn, RpcConnection_np, common);
 501     while (conn) {
 502         rpcrt4_conn_listen_pipe(conn);
 503         if (conn->ovl.hEvent)
 504             (*count)++;
 505         conn = CONTAINING_RECORD(conn->common.Next, RpcConnection_np, common);
 506     }
 507
 508     /* make array of connections */
 509     if (objs)
 510         objs = HeapReAlloc(GetProcessHeap(), 0, objs, *count*sizeof(HANDLE));
 511     else
 512         objs = HeapAlloc(GetProcessHeap(), 0, *count*sizeof(HANDLE));
 513     if (!objs)
 514     {
 515         ERR("couldn't allocate objs\n");
 516         LeaveCriticalSection(&protseq->cs);
 517         return NULL;
 518     }
 519
 520     objs[0] = npps->mgr_event;
 521     *count = 1;
 522     conn = CONTAINING_RECORD(protseq->conn, RpcConnection_np, common);
 523     while (conn) {
 524         if ((objs[*count] = conn->ovl.hEvent))
 525             (*count)++;
 526         conn = CONTAINING_RECORD(conn->common.Next, RpcConnection_np, common);
 527     }
 528     LeaveCriticalSection(&protseq->cs);
 529     return objs;
 530 }
 531
 532 static void rpcrt4_protseq_np_free_wait_array(RpcServerProtseq *protseq, void *array)
 533 {
 534     HeapFree(GetProcessHeap(), 0, array);
 535 }
 536
 537 static int rpcrt4_protseq_np_wait_for_new_connection(RpcServerProtseq *protseq, unsigned int count, void *wait_array)
 538 {
 539     HANDLE b_handle;
 540     HANDLE *objs = wait_array;
 541     DWORD res;
 542     RpcConnection *cconn;
 543     RpcConnection_np *conn;
 544
 545     if (!objs)
 546         return -1;
 547
 548     res = WaitForMultipleObjects(count, objs, FALSE, INFINITE);
 549     if (res == WAIT_OBJECT_0)
 550         return 0;
 551     else if (res == WAIT_FAILED)
 552     {
 553         ERR("wait failed with error %ld\n", GetLastError());
 554         return -1;
 555     }
 556     else
 557     {
 558         b_handle = objs[res - WAIT_OBJECT_0];
 559         /* find which connection got a RPC */
 560         EnterCriticalSection(&protseq->cs);
 561         conn = CONTAINING_RECORD(protseq->conn, RpcConnection_np, common);
 562         while (conn) {
 563             if (b_handle == conn->ovl.hEvent) break;
 564             conn = CONTAINING_RECORD(conn->common.Next, RpcConnection_np, common);
 565         }
 566         cconn = NULL;
 567         if (conn)
 568             RPCRT4_SpawnConnection(&cconn, &conn->common);
 569         else
 570             ERR("failed to locate connection for handle %p\n", b_handle);
 571         LeaveCriticalSection(&protseq->cs);
 572         if (cconn)
 573         {
 574             RPCRT4_new_client(cconn);
 575             return 1;
 576         }
 577         else return -1;
 578     }
 579 }
 580
 581 static size_t rpcrt4_ncalrpc_get_top_of_tower(unsigned char *tower_data,
 582                                               const char *networkaddr,
 583                                               const char *endpoint)
 584 {
 585     twr_empty_floor_t *pipe_floor;
 586     size_t size;
 587     size_t endpoint_size;
 588
 589     TRACE("(%p, %s, %s)\n", tower_data, networkaddr, endpoint);
 590
 591     endpoint_size = strlen(networkaddr) + 1;
 592     size = sizeof(*pipe_floor) + endpoint_size;
 593
 594     if (!tower_data)
 595         return size;
 596
 597     pipe_floor = (twr_empty_floor_t *)tower_data;
 598
 599     tower_data += sizeof(*pipe_floor);
 600
 601     pipe_floor->count_lhs = sizeof(pipe_floor->protid);
 602     pipe_floor->protid = EPM_PROTOCOL_SMB;
 603     pipe_floor->count_rhs = endpoint_size;
 604
 605     memcpy(tower_data, endpoint, endpoint_size);
 606     tower_data += endpoint_size;
 607
 608     return size;
 609 }
 610
 611 static RPC_STATUS rpcrt4_ncalrpc_parse_top_of_tower(const unsigned char *tower_data,
 612                                                     size_t tower_size,
 613                                                     char **networkaddr,
 614                                                     char **endpoint)
 615 {
 616     const twr_empty_floor_t *pipe_floor = (const twr_empty_floor_t *)tower_data;
 617
 618     TRACE("(%p, %d, %p, %p)\n", tower_data, (int)tower_size, networkaddr, endpoint);
 619
 620     *networkaddr = NULL;
 621     *endpoint = NULL;
 622
 623     if (tower_size < sizeof(*pipe_floor))
 624         return EPT_S_NOT_REGISTERED;
 625
 626     tower_data += sizeof(*pipe_floor);
 627     tower_size -= sizeof(*pipe_floor);
 628
 629     if ((pipe_floor->count_lhs != sizeof(pipe_floor->protid)) ||
 630         (pipe_floor->protid != EPM_PROTOCOL_SMB) ||
 631         (pipe_floor->count_rhs > tower_size))
 632         return EPT_S_NOT_REGISTERED;
 633
 634     if (endpoint)
 635     {
 636         *endpoint = I_RpcAllocate(pipe_floor->count_rhs);
 637         if (!*endpoint)
 638             return RPC_S_OUT_OF_RESOURCES;
 639         memcpy(*endpoint, tower_data, pipe_floor->count_rhs);
 640     }
 641
 642     return RPC_S_OK;
 643 }
 644
 645 /**** ncacn_ip_tcp support ****/
 646
 647 typedef struct _RpcConnection_tcp
 648 {
 649   RpcConnection common;
 650   int sock;
 651 } RpcConnection_tcp;
 652
 653 static RpcConnection *rpcrt4_conn_tcp_alloc(void)
 654 {
 655   RpcConnection_tcp *tcpc;
 656   tcpc = HeapAlloc(GetProcessHeap(), 0, sizeof(RpcConnection_tcp));
 657   if (tcpc == NULL)
 658     return NULL;
 659   tcpc->sock = -1;
 660   return &tcpc->common;
 661 }
 662
 663 static RPC_STATUS rpcrt4_ncacn_ip_tcp_open(RpcConnection* Connection)
 664 {
 665   RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
 666   int sock;
 667   int ret;
 668   struct addrinfo *ai;
 669   struct addrinfo *ai_cur;
 670   struct addrinfo hints;
 671
 672   TRACE("(%s, %s)\n", Connection->NetworkAddr, Connection->Endpoint);
 673
 674   if (tcpc->sock != -1)
 675     return RPC_S_OK;
 676
 677   hints.ai_flags          = 0;
 678   hints.ai_family         = PF_UNSPEC;
 679   hints.ai_socktype       = SOCK_STREAM;
 680   hints.ai_protocol       = IPPROTO_TCP;
 681   hints.ai_addrlen        = 0;
 682   hints.ai_addr           = NULL;
 683   hints.ai_canonname      = NULL;
 684   hints.ai_next           = NULL;
 685
 686   ret = getaddrinfo(Connection->NetworkAddr, Connection->Endpoint, &hints, &ai);
 687   if (ret)
 688   {
 689     ERR("getaddrinfo for %s:%s failed: %s\n", Connection->NetworkAddr,
 690       Connection->Endpoint, gai_strerror(ret));
 691     return RPC_S_SERVER_UNAVAILABLE;
 692   }
 693
 694   for (ai_cur = ai; ai_cur; ai_cur = ai_cur->ai_next)
 695   {
 696     if (TRACE_ON(rpc))
 697     {
 698       char host[256];
 699       char service[256];
 700       getnameinfo(ai_cur->ai_addr, ai_cur->ai_addrlen,
 701         host, sizeof(host), service, sizeof(service),
 702         NI_NUMERICHOST | NI_NUMERICSERV);
 703       TRACE("trying %s:%s\n", host, service);
 704     }
 705
 706     sock = socket(ai_cur->ai_family, ai_cur->ai_socktype, ai_cur->ai_protocol);
 707     if (sock < 0)
 708     {
 709       WARN("socket() failed: %s\n", strerror(errno));
 710       continue;
 711     }
 712
 713     if (0>connect(sock, ai_cur->ai_addr, ai_cur->ai_addrlen))
 714     {
 715       WARN("connect() failed: %s\n", strerror(errno));
 716       close(sock);
 717       continue;
 718     }
 719     tcpc->sock = sock;
 720
 721     freeaddrinfo(ai);
 722     TRACE("connected\n");
 723     return RPC_S_OK;
 724   }
 725
 726   freeaddrinfo(ai);
 727   ERR("couldn't connect to %s:%s\n", Connection->NetworkAddr, Connection->Endpoint);
 728   return RPC_S_SERVER_UNAVAILABLE;
 729 }
 730
 731 static RPC_STATUS rpcrt4_protseq_ncacn_ip_tcp_open_endpoint(RpcServerProtseq *protseq, LPSTR endpoint)
 732 {
 733     RPC_STATUS status = RPC_S_CANT_CREATE_ENDPOINT;
 734     int sock;
 735     int ret;
 736     struct addrinfo *ai;
 737     struct addrinfo *ai_cur;
 738     struct addrinfo hints;
 739
 740     TRACE("(%p, %s)\n", protseq, endpoint);
 741
 742     hints.ai_flags          = AI_PASSIVE /* for non-localhost addresses */;
 743     hints.ai_family         = PF_UNSPEC;
 744     hints.ai_socktype       = SOCK_STREAM;
 745     hints.ai_protocol       = IPPROTO_TCP;
 746     hints.ai_addrlen        = 0;
 747     hints.ai_addr           = NULL;
 748     hints.ai_canonname      = NULL;
 749     hints.ai_next           = NULL;
 750
 751     ret = getaddrinfo(NULL, endpoint, &hints, &ai);
 752     if (ret)
 753     {
 754         ERR("getaddrinfo for port %s failed: %s\n", endpoint,
 755             gai_strerror(ret));
 756         if ((ret == EAI_SERVICE) || (ret == EAI_NONAME))
 757             return RPC_S_INVALID_ENDPOINT_FORMAT;
 758         return RPC_S_CANT_CREATE_ENDPOINT;
 759     }
 760
 761     for (ai_cur = ai; ai_cur; ai_cur = ai_cur->ai_next)
 762     {
 763         RpcConnection_tcp *tcpc;
 764         if (TRACE_ON(rpc))
 765         {
 766             char host[256];
 767             char service[256];
 768             getnameinfo(ai_cur->ai_addr, ai_cur->ai_addrlen,
 769                         host, sizeof(host), service, sizeof(service),
 770                         NI_NUMERICHOST | NI_NUMERICSERV);
 771             TRACE("trying %s:%s\n", host, service);
 772         }
 773
 774         sock = socket(ai_cur->ai_family, ai_cur->ai_socktype, ai_cur->ai_protocol);
 775         if (sock < 0)
 776         {
 777             WARN("socket() failed: %s\n", strerror(errno));
 778             status = RPC_S_CANT_CREATE_ENDPOINT;
 779             continue;
 780         }
 781
 782         ret = bind(sock, ai_cur->ai_addr, ai_cur->ai_addrlen);
 783         if (ret < 0)
 784         {
 785             WARN("bind failed: %s\n", strerror(errno));
 786             close(sock);
 787             if (errno == EADDRINUSE)
 788               status = RPC_S_DUPLICATE_ENDPOINT;
 789             else
 790               status = RPC_S_CANT_CREATE_ENDPOINT;
 791             continue;
 792         }
 793         status = RPCRT4_CreateConnection((RpcConnection **)&tcpc, TRUE,
 794                                          protseq->Protseq, NULL, endpoint, NULL,
 795                                          NULL, NULL);
 796         if (status != RPC_S_OK)
 797         {
 798             close(sock);
 799             continue;
 800         }
 801
 802         ret = listen(sock, protseq->MaxCalls);
 803         if (ret < 0)
 804         {
 805             WARN("listen failed: %s\n", strerror(errno));
 806             close(sock);
 807             status = RPC_S_OUT_OF_RESOURCES;
 808             continue;
 809         }
 810         /* need a non-blocking socket, otherwise accept() has a potential
 811          * race-condition (poll() says it is readable, connection drops,
 812          * and accept() blocks until the next connection comes...)
 813          */
 814         ret = fcntl(sock, F_SETFL, O_NONBLOCK);
 815         if (ret < 0)
 816         {
 817             WARN("couldn't make socket non-blocking, error %d\n", ret);
 818             close(sock);
 819             status = RPC_S_OUT_OF_RESOURCES;
 820             continue;
 821         }
 822         tcpc->sock = sock;
 823
 824         freeaddrinfo(ai);
 825
 826         EnterCriticalSection(&protseq->cs);
 827         tcpc->common.Next = protseq->conn;
 828         protseq->conn = &tcpc->common;
 829         LeaveCriticalSection(&protseq->cs);
 830
 831         TRACE("listening on %s\n", endpoint);
 832         return RPC_S_OK;
 833     }
 834
 835     freeaddrinfo(ai);
 836     ERR("couldn't listen on port %s\n", endpoint);
 837     return status;
 838 }
 839
 840 static RPC_STATUS rpcrt4_conn_tcp_handoff(RpcConnection *old_conn, RpcConnection *new_conn)
 841 {
 842   int ret;
 843   struct sockaddr_in address;
 844   socklen_t addrsize;
 845   RpcConnection_tcp *server = (RpcConnection_tcp*) old_conn;
 846   RpcConnection_tcp *client = (RpcConnection_tcp*) new_conn;
 847
 848   addrsize = sizeof(address);
 849   ret = accept(server->sock, (struct sockaddr*) &address, &addrsize);
 850   if (ret < 0)
 851   {
 852     ERR("Failed to accept a TCP connection: error %d\n", ret);
 853     return RPC_S_OUT_OF_RESOURCES;
 854   }
 855   /* reset to blocking behaviour */
 856   fcntl(ret, F_SETFL, 0);
 857   client->sock = ret;
 858   TRACE("Accepted a new TCP connection\n");
 859   return RPC_S_OK;
 860 }
 861
 862 static int rpcrt4_conn_tcp_read(RpcConnection *Connection,
 863                                 void *buffer, unsigned int count)
 864 {
 865   RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
 866   int r = recv(tcpc->sock, buffer, count, MSG_WAITALL);
 867   TRACE("%d %p %u -> %d\n", tcpc->sock, buffer, count, r);
 868   return r;
 869 }
 870
 871 static int rpcrt4_conn_tcp_write(RpcConnection *Connection,
 872                                  const void *buffer, unsigned int count)
 873 {
 874   RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
 875   int r = write(tcpc->sock, buffer, count);
 876   TRACE("%d %p %u -> %d\n", tcpc->sock, buffer, count, r);
 877   return r;
 878 }
 879
 880 static int rpcrt4_conn_tcp_close(RpcConnection *Connection)
 881 {
 882   RpcConnection_tcp *tcpc = (RpcConnection_tcp *) Connection;
 883
 884   TRACE("%d\n", tcpc->sock);
 885
 886   if (tcpc->sock != -1)
 887     close(tcpc->sock);
 888   tcpc->sock = -1;
 889   return 0;
 890 }
 891
 892 static size_t rpcrt4_ncacn_ip_tcp_get_top_of_tower(unsigned char *tower_data,
 893                                                    const char *networkaddr,
 894                                                    const char *endpoint)
 895 {
 896     twr_tcp_floor_t *tcp_floor;
 897     twr_ipv4_floor_t *ipv4_floor;
 898     struct addrinfo *ai;
 899     struct addrinfo hints;
 900     int ret;
 901     size_t size = sizeof(*tcp_floor) + sizeof(*ipv4_floor);
 902
 903     TRACE("(%p, %s, %s)\n", tower_data, networkaddr, endpoint);
 904
 905     if (!tower_data)
 906         return size;
 907
 908     tcp_floor = (twr_tcp_floor_t *)tower_data;
 909     tower_data += sizeof(*tcp_floor);
 910
 911     ipv4_floor = (twr_ipv4_floor_t *)tower_data;
 912
 913     tcp_floor->count_lhs = sizeof(tcp_floor->protid);
 914     tcp_floor->protid = EPM_PROTOCOL_TCP;
 915     tcp_floor->count_rhs = sizeof(tcp_floor->port);
 916
 917     ipv4_floor->count_lhs = sizeof(ipv4_floor->protid);
 918     ipv4_floor->protid = EPM_PROTOCOL_IP;
 919     ipv4_floor->count_rhs = sizeof(ipv4_floor->ipv4addr);
 920
 921     hints.ai_flags          = AI_NUMERICHOST;
 922     /* FIXME: only support IPv4 at the moment. how is IPv6 represented by the EPM? */
 923     hints.ai_family         = PF_INET;
 924     hints.ai_socktype       = SOCK_STREAM;
 925     hints.ai_protocol       = IPPROTO_TCP;
 926     hints.ai_addrlen        = 0;
 927     hints.ai_addr           = NULL;
 928     hints.ai_canonname      = NULL;
 929     hints.ai_next           = NULL;
 930
 931     ret = getaddrinfo(networkaddr, endpoint, &hints, &ai);
 932     if (ret)
 933     {
 934         ret = getaddrinfo("0.0.0.0", endpoint, &hints, &ai);
 935         if (ret)
 936         {
 937             ERR("getaddrinfo failed: %s\n", gai_strerror(ret));
 938             return 0;
 939         }
 940     }
 941
 942     if (ai->ai_family == PF_INET)
 943     {
 944         const struct sockaddr_in *sin = (const struct sockaddr_in *)ai->ai_addr;
 945         tcp_floor->port = sin->sin_port;
 946         ipv4_floor->ipv4addr = sin->sin_addr.s_addr;
 947     }
 948     else
 949     {
 950         ERR("unexpected protocol family %d\n", ai->ai_family);
 951         return 0;
 952     }
 953
 954     freeaddrinfo(ai);
 955
 956     return size;
 957 }
 958
 959 static RPC_STATUS rpcrt4_ncacn_ip_tcp_parse_top_of_tower(const unsigned char *tower_data,
 960                                                          size_t tower_size,
 961                                                          char **networkaddr,
 962                                                          char **endpoint)
 963 {
 964     const twr_tcp_floor_t *tcp_floor = (const twr_tcp_floor_t *)tower_data;
 965     const twr_ipv4_floor_t *ipv4_floor;
 966     struct in_addr in_addr;
 967
 968     TRACE("(%p, %d, %p, %p)\n", tower_data, (int)tower_size, networkaddr, endpoint);
 969
 970     if (tower_size < sizeof(*tcp_floor))
 971         return EPT_S_NOT_REGISTERED;
 972
 973     tower_data += sizeof(*tcp_floor);
 974     tower_size -= sizeof(*tcp_floor);
 975
 976     if (tower_size < sizeof(*ipv4_floor))
 977         return EPT_S_NOT_REGISTERED;
 978
 979     ipv4_floor = (const twr_ipv4_floor_t *)tower_data;
 980
 981     if ((tcp_floor->count_lhs != sizeof(tcp_floor->protid)) ||
 982         (tcp_floor->protid != EPM_PROTOCOL_TCP) ||
 983         (tcp_floor->count_rhs != sizeof(tcp_floor->port)) ||
 984         (ipv4_floor->count_lhs != sizeof(ipv4_floor->protid)) ||
 985         (ipv4_floor->protid != EPM_PROTOCOL_IP) ||
 986         (ipv4_floor->count_rhs != sizeof(ipv4_floor->ipv4addr)))
 987         return EPT_S_NOT_REGISTERED;
 988
 989     if (endpoint)
 990     {
 991         *endpoint = I_RpcAllocate(6 /* sizeof("65535") + 1 */);
 992         if (!*endpoint)
 993             return RPC_S_OUT_OF_RESOURCES;
 994         sprintf(*endpoint, "%u", ntohs(tcp_floor->port));
 995     }
 996
 997     if (networkaddr)
 998     {
 999         *networkaddr = I_RpcAllocate(INET_ADDRSTRLEN);
1000         if (!*networkaddr)
1001         {
1002             if (endpoint)
1003             {
1004                 I_RpcFree(*endpoint);
1005                 *endpoint = NULL;
1006             }
1007             return RPC_S_OUT_OF_RESOURCES;
1008         }
1009         in_addr.s_addr = ipv4_floor->ipv4addr;
1010         if (!inet_ntop(AF_INET, &in_addr, *networkaddr, INET_ADDRSTRLEN))
1011         {
1012             ERR("inet_ntop: %s\n", strerror(errno));
1013             I_RpcFree(*networkaddr);
1014             *networkaddr = NULL;
1015             if (endpoint)
1016             {
1017                 I_RpcFree(*endpoint);
1018                 *endpoint = NULL;
1019             }
1020             return EPT_S_NOT_REGISTERED;
1021         }
1022     }
1023
1024     return RPC_S_OK;
1025 }
1026
1027 typedef struct _RpcServerProtseq_sock
1028 {
1029     RpcServerProtseq common;
1030     int mgr_event_rcv;
1031     int mgr_event_snd;
1032 } RpcServerProtseq_sock;
1033
1034 static RpcServerProtseq *rpcrt4_protseq_sock_alloc(void)
1035 {
1036     RpcServerProtseq_sock *ps = HeapAlloc(GetProcessHeap(), 0, sizeof(*ps));
1037     if (ps)
1038     {
1039         int fds[2];
1040         if (!socketpair(PF_UNIX, SOCK_DGRAM, 0, fds))
1041         {
1042             fcntl(fds[0], F_SETFL, O_NONBLOCK);
1043             fcntl(fds[1], F_SETFL, O_NONBLOCK);
1044             ps->mgr_event_rcv = fds[0];
1045             ps->mgr_event_snd = fds[1];
1046         }
1047         else
1048         {
1049             ERR("socketpair failed with error %s\n", strerror(errno));
1050             HeapFree(GetProcessHeap(), 0, ps);
1051             return NULL;
1052         }
1053     }
1054     return &ps->common;
1055 }
1056
1057 static void rpcrt4_protseq_sock_signal_state_changed(RpcServerProtseq *protseq)
1058 {
1059     RpcServerProtseq_sock *sockps = CONTAINING_RECORD(protseq, RpcServerProtseq_sock, common);
1060     char dummy = 1;
1061     write(sockps->mgr_event_snd, &dummy, sizeof(dummy));
1062 }
1063
1064 static void *rpcrt4_protseq_sock_get_wait_array(RpcServerProtseq *protseq, void *prev_array, unsigned int *count)
1065 {
1066     struct pollfd *poll_info = prev_array;
1067     RpcConnection_tcp *conn;
1068     RpcServerProtseq_sock *sockps = CONTAINING_RECORD(protseq, RpcServerProtseq_sock, common);
1069
1070     EnterCriticalSection(&protseq->cs);
1071
1072     /* open and count connections */
1073     *count = 1;
1074     conn = (RpcConnection_tcp *)protseq->conn;
1075     while (conn) {
1076         if (conn->sock != -1)
1077             (*count)++;
1078         conn = (RpcConnection_tcp *)conn->common.Next;
1079     }
1080
1081     /* make array of connections */
1082     if (poll_info)
1083         poll_info = HeapReAlloc(GetProcessHeap(), 0, poll_info, *count*sizeof(*poll_info));
1084     else
1085         poll_info = HeapAlloc(GetProcessHeap(), 0, *count*sizeof(*poll_info));
1086     if (!poll_info)
1087     {
1088         ERR("couldn't allocate poll_info\n");
1089         LeaveCriticalSection(&protseq->cs);
1090         return NULL;
1091     }
1092
1093     poll_info[0].fd = sockps->mgr_event_rcv;
1094     poll_info[0].events = POLLIN;
1095     *count = 1;
1096     conn =  CONTAINING_RECORD(protseq->conn, RpcConnection_tcp, common);
1097     while (conn) {
1098         if (conn->sock != -1)
1099         {
1100             poll_info[*count].fd = conn->sock;
1101             poll_info[*count].events = POLLIN;
1102             (*count)++;
1103         }
1104         conn = CONTAINING_RECORD(conn->common.Next, RpcConnection_tcp, common);
1105     }
1106     LeaveCriticalSection(&protseq->cs);
1107     return poll_info;
1108 }
1109
1110 static void rpcrt4_protseq_sock_free_wait_array(RpcServerProtseq *protseq, void *array)
1111 {
1112     HeapFree(GetProcessHeap(), 0, array);
1113 }
1114
1115 static int rpcrt4_protseq_sock_wait_for_new_connection(RpcServerProtseq *protseq, unsigned int count, void *wait_array)
1116 {
1117     struct pollfd *poll_info = wait_array;
1118     int ret, i;
1119     RpcConnection *cconn;
1120     RpcConnection_tcp *conn;
1121
1122     if (!poll_info)
1123         return -1;
1124
1125     ret = poll(poll_info, count, -1);
1126     if (ret < 0)
1127     {
1128         ERR("poll failed with error %d\n", ret);
1129         return -1;
1130     }
1131
1132     for (i = 0; i < count; i++)
1133         if (poll_info[i].revents & POLLIN)
1134         {
1135             /* RPC server event */
1136             if (i == 0)
1137             {
1138                 char dummy;
1139                 read(poll_info[0].fd, &dummy, sizeof(dummy));
1140                 return 0;
1141             }
1142
1143             /* find which connection got a RPC */
1144             EnterCriticalSection(&protseq->cs);
1145             conn = CONTAINING_RECORD(protseq->conn, RpcConnection_tcp, common);
1146             while (conn) {
1147                 if (poll_info[i].fd == conn->sock) break;
1148                 conn = CONTAINING_RECORD(conn->common.Next, RpcConnection_tcp, common);
1149             }
1150             cconn = NULL;
1151             if (conn)
1152                 RPCRT4_SpawnConnection(&cconn, &conn->common);
1153             else
1154                 ERR("failed to locate connection for fd %d\n", poll_info[i].fd);
1155             LeaveCriticalSection(&protseq->cs);
1156             if (cconn)
1157                 RPCRT4_new_client(cconn);
1158             else
1159                 return -1;
1160         }
1161
1162     return 1;
1163 }
1164
1165 static const struct connection_ops conn_protseq_list[] = {
1166   { "ncacn_np",
1167     { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_SMB },
1168     rpcrt4_conn_np_alloc,
1169     rpcrt4_ncacn_np_open,
1170     rpcrt4_ncacn_np_handoff,
1171     rpcrt4_conn_np_read,
1172     rpcrt4_conn_np_write,
1173     rpcrt4_conn_np_close,
1174     rpcrt4_ncacn_np_get_top_of_tower,
1175     rpcrt4_ncacn_np_parse_top_of_tower,
1176   },
1177   { "ncalrpc",
1178     { EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_PIPE },
1179     rpcrt4_conn_np_alloc,
1180     rpcrt4_ncalrpc_open,
1181     rpcrt4_ncalrpc_handoff,
1182     rpcrt4_conn_np_read,
1183     rpcrt4_conn_np_write,
1184     rpcrt4_conn_np_close,
1185     rpcrt4_ncalrpc_get_top_of_tower,
1186     rpcrt4_ncalrpc_parse_top_of_tower,
1187   },
1188   { "ncacn_ip_tcp",
1189     { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_TCP },
1190     rpcrt4_conn_tcp_alloc,
1191     rpcrt4_ncacn_ip_tcp_open,
1192     rpcrt4_conn_tcp_handoff,
1193     rpcrt4_conn_tcp_read,
1194     rpcrt4_conn_tcp_write,
1195     rpcrt4_conn_tcp_close,
1196     rpcrt4_ncacn_ip_tcp_get_top_of_tower,
1197     rpcrt4_ncacn_ip_tcp_parse_top_of_tower,
1198   }
1199 };
1200
1201
1202 static const struct protseq_ops protseq_list[] =
1203 {
1204     {
1205         "ncacn_np",
1206         rpcrt4_protseq_np_alloc,
1207         rpcrt4_protseq_np_signal_state_changed,
1208         rpcrt4_protseq_np_get_wait_array,
1209         rpcrt4_protseq_np_free_wait_array,
1210         rpcrt4_protseq_np_wait_for_new_connection,
1211         rpcrt4_protseq_ncacn_np_open_endpoint,
1212     },
1213     {
1214         "ncalrpc",
1215         rpcrt4_protseq_np_alloc,
1216         rpcrt4_protseq_np_signal_state_changed,
1217         rpcrt4_protseq_np_get_wait_array,
1218         rpcrt4_protseq_np_free_wait_array,
1219         rpcrt4_protseq_np_wait_for_new_connection,
1220         rpcrt4_protseq_ncalrpc_open_endpoint,
1221     },
1222     {
1223         "ncacn_ip_tcp",
1224         rpcrt4_protseq_sock_alloc,
1225         rpcrt4_protseq_sock_signal_state_changed,
1226         rpcrt4_protseq_sock_get_wait_array,
1227         rpcrt4_protseq_sock_free_wait_array,
1228         rpcrt4_protseq_sock_wait_for_new_connection,
1229         rpcrt4_protseq_ncacn_ip_tcp_open_endpoint,
1230     },
1231 };
1232
1233 #define ARRAYSIZE(a) (sizeof((a)) / sizeof((a)[0]))
1234
1235 const struct protseq_ops *rpcrt4_get_protseq_ops(const char *protseq)
1236 {
1237   int i;
1238   for(i=0; i<ARRAYSIZE(protseq_list); i++)
1239     if (!strcmp(protseq_list[i].name, protseq))
1240       return &protseq_list[i];
1241   return NULL;
1242 }
1243
1244 static const struct connection_ops *rpcrt4_get_conn_protseq_ops(const char *protseq)
1245 {
1246     int i;
1247     for(i=0; i<ARRAYSIZE(conn_protseq_list); i++)
1248         if (!strcmp(conn_protseq_list[i].name, protseq))
1249             return &conn_protseq_list[i];
1250     return NULL;
1251 }
1252
1253 /**** interface to rest of code ****/
1254
1255 RPC_STATUS RPCRT4_OpenClientConnection(RpcConnection* Connection)
1256 {
1257   TRACE("(Connection == ^%p)\n", Connection);
1258
1259   assert(!Connection->server);
1260   return Connection->ops->open_connection_client(Connection);
1261 }
1262
1263 RPC_STATUS RPCRT4_CloseConnection(RpcConnection* Connection)
1264 {
1265   TRACE("(Connection == ^%p)\n", Connection);
1266   rpcrt4_conn_close(Connection);
1267   return RPC_S_OK;
1268 }
1269
1270 RPC_STATUS RPCRT4_CreateConnection(RpcConnection** Connection, BOOL server,
1271     LPCSTR Protseq, LPCSTR NetworkAddr, LPCSTR Endpoint,
1272     LPCSTR NetworkOptions, RpcAuthInfo* AuthInfo, RpcBinding* Binding)
1273 {
1274   const struct connection_ops *ops;
1275   RpcConnection* NewConnection;
1276
1277   ops = rpcrt4_get_conn_protseq_ops(Protseq);
1278   if (!ops)
1279     return RPC_S_PROTSEQ_NOT_SUPPORTED;
1280
1281   NewConnection = ops->alloc();
1282   NewConnection->Next = NULL;
1283   NewConnection->server = server;
1284   NewConnection->ops = ops;
1285   NewConnection->NetworkAddr = RPCRT4_strdupA(NetworkAddr);
1286   NewConnection->Endpoint = RPCRT4_strdupA(Endpoint);
1287   NewConnection->Used = Binding;
1288   NewConnection->MaxTransmissionSize = RPC_MAX_PACKET_SIZE;
1289   memset(&NewConnection->ActiveInterface, 0, sizeof(NewConnection->ActiveInterface));
1290   NewConnection->NextCallId = 1;
1291
1292   memset(&NewConnection->ctx, 0, sizeof(NewConnection->ctx));
1293   if (AuthInfo) RpcAuthInfo_AddRef(AuthInfo);
1294   NewConnection->AuthInfo = AuthInfo;
1295   list_init(&NewConnection->conn_pool_entry);
1296
1297   TRACE("connection: %p\n", NewConnection);
1298   *Connection = NewConnection;
1299
1300   return RPC_S_OK;
1301 }
1302
1303 RpcConnection *RPCRT4_GetIdleConnection(const RPC_SYNTAX_IDENTIFIER *InterfaceId,
1304     const RPC_SYNTAX_IDENTIFIER *TransferSyntax, LPCSTR Protseq, LPCSTR NetworkAddr,
1305     LPCSTR Endpoint, RpcAuthInfo* AuthInfo)
1306 {
1307   RpcConnection *Connection;
1308   /* try to find a compatible connection from the connection pool */
1309   EnterCriticalSection(&connection_pool_cs);
1310   LIST_FOR_EACH_ENTRY(Connection, &connection_pool, RpcConnection, conn_pool_entry)
1311     if ((Connection->AuthInfo == AuthInfo) &&
1312         !memcmp(&Connection->ActiveInterface, InterfaceId,
1313            sizeof(RPC_SYNTAX_IDENTIFIER)) &&
1314         !strcmp(rpcrt4_conn_get_name(Connection), Protseq) &&
1315         !strcmp(Connection->NetworkAddr, NetworkAddr) &&
1316         !strcmp(Connection->Endpoint, Endpoint))
1317     {
1318       list_remove(&Connection->conn_pool_entry);
1319       LeaveCriticalSection(&connection_pool_cs);
1320       TRACE("got connection from pool %p\n", Connection);
1321       return Connection;
1322     }
1323
1324   LeaveCriticalSection(&connection_pool_cs);
1325   return NULL;
1326 }
1327
1328 void RPCRT4_ReleaseIdleConnection(RpcConnection *Connection)
1329 {
1330   assert(!Connection->server);
1331   EnterCriticalSection(&connection_pool_cs);
1332   list_add_head(&connection_pool, &Connection->conn_pool_entry);
1333   LeaveCriticalSection(&connection_pool_cs);
1334 }
1335
1336
1337 RPC_STATUS RPCRT4_SpawnConnection(RpcConnection** Connection, RpcConnection* OldConnection)
1338 {
1339   RPC_STATUS err;
1340
1341   err = RPCRT4_CreateConnection(Connection, OldConnection->server,
1342                                 rpcrt4_conn_get_name(OldConnection),
1343                                 OldConnection->NetworkAddr,
1344                                 OldConnection->Endpoint, NULL,
1345                                 OldConnection->AuthInfo, NULL);
1346   if (err == RPC_S_OK)
1347     rpcrt4_conn_handoff(OldConnection, *Connection);
1348   return err;
1349 }
1350
1351 RPC_STATUS RPCRT4_DestroyConnection(RpcConnection* Connection)
1352 {
1353   TRACE("connection: %p\n", Connection);
1354
1355   RPCRT4_CloseConnection(Connection);
1356   RPCRT4_strfree(Connection->Endpoint);
1357   RPCRT4_strfree(Connection->NetworkAddr);
1358   if (Connection->AuthInfo) RpcAuthInfo_Release(Connection->AuthInfo);
1359   HeapFree(GetProcessHeap(), 0, Connection);
1360   return RPC_S_OK;
1361 }
1362
1363 RPC_STATUS RpcTransport_GetTopOfTower(unsigned char *tower_data,
1364                                       size_t *tower_size,
1365                                       const char *protseq,
1366                                       const char *networkaddr,
1367                                       const char *endpoint)
1368 {
1369     twr_empty_floor_t *protocol_floor;
1370     const struct connection_ops *protseq_ops = rpcrt4_get_conn_protseq_ops(protseq);
1371
1372     *tower_size = 0;
1373
1374     if (!protseq_ops)
1375         return RPC_S_INVALID_RPC_PROTSEQ;
1376
1377     if (!tower_data)
1378     {
1379         *tower_size = sizeof(*protocol_floor);
1380         *tower_size += protseq_ops->get_top_of_tower(NULL, networkaddr, endpoint);
1381         return RPC_S_OK;
1382     }
1383
1384     protocol_floor = (twr_empty_floor_t *)tower_data;
1385     protocol_floor->count_lhs = sizeof(protocol_floor->protid);
1386     protocol_floor->protid = protseq_ops->epm_protocols[0];
1387     protocol_floor->count_rhs = 0;
1388
1389     tower_data += sizeof(*protocol_floor);
1390
1391     *tower_size = protseq_ops->get_top_of_tower(tower_data, networkaddr, endpoint);
1392     if (!*tower_size)
1393         return EPT_S_NOT_REGISTERED;
1394
1395     *tower_size += sizeof(*protocol_floor);
1396
1397     return RPC_S_OK;
1398 }
1399
1400 RPC_STATUS RpcTransport_ParseTopOfTower(const unsigned char *tower_data,
1401                                         size_t tower_size,
1402                                         char **protseq,
1403                                         char **networkaddr,
1404                                         char **endpoint)
1405 {
1406     const twr_empty_floor_t *protocol_floor;
1407     const twr_empty_floor_t *floor4;
1408     const struct connection_ops *protseq_ops = NULL;
1409     RPC_STATUS status;
1410     int i;
1411
1412     if (tower_size < sizeof(*protocol_floor))
1413         return EPT_S_NOT_REGISTERED;
1414
1415     protocol_floor = (const twr_empty_floor_t *)tower_data;
1416     tower_data += sizeof(*protocol_floor);
1417     tower_size -= sizeof(*protocol_floor);
1418     if ((protocol_floor->count_lhs != sizeof(protocol_floor->protid)) ||
1419         (protocol_floor->count_rhs > tower_size))
1420         return EPT_S_NOT_REGISTERED;
1421     tower_data += protocol_floor->count_rhs;
1422     tower_size -= protocol_floor->count_rhs;
1423
1424     floor4 = (const twr_empty_floor_t *)tower_data;
1425     if ((tower_size < sizeof(*floor4)) ||
1426         (floor4->count_lhs != sizeof(floor4->protid)))
1427         return EPT_S_NOT_REGISTERED;
1428
1429     for(i = 0; i < ARRAYSIZE(conn_protseq_list); i++)
1430         if ((protocol_floor->protid == conn_protseq_list[i].epm_protocols[0]) &&
1431             (floor4->protid == conn_protseq_list[i].epm_protocols[1]))
1432         {
1433             protseq_ops = &conn_protseq_list[i];
1434             break;
1435         }
1436
1437     if (!protseq_ops)
1438         return EPT_S_NOT_REGISTERED;
1439
1440     status = protseq_ops->parse_top_of_tower(tower_data, tower_size, networkaddr, endpoint);
1441
1442     if ((status == RPC_S_OK) && protseq)
1443     {
1444         *protseq = I_RpcAllocate(strlen(protseq_ops->name) + 1);
1445         strcpy(*protseq, protseq_ops->name);
1446     }
1447
1448     return status;
1449 }
1450
1451 /***********************************************************************
1452  *             RpcNetworkIsProtseqValidW (RPCRT4.@)
1453  *
1454  * Checks if the given protocol sequence is known by the RPC system.
1455  * If it is, returns RPC_S_OK, otherwise RPC_S_PROTSEQ_NOT_SUPPORTED.
1456  *
1457  */
1458 RPC_STATUS WINAPI RpcNetworkIsProtseqValidW(RPC_WSTR protseq)
1459 {
1460   char ps[0x10];
1461
1462   WideCharToMultiByte(CP_ACP, 0, protseq, -1,
1463                       ps, sizeof ps, NULL, NULL);
1464   if (rpcrt4_get_conn_protseq_ops(ps))
1465     return RPC_S_OK;
1466
1467   FIXME("Unknown protseq %s\n", debugstr_w(protseq));
1468
1469   return RPC_S_INVALID_RPC_PROTSEQ;
1470 }
1471
1472 /***********************************************************************
1473  *             RpcNetworkIsProtseqValidA (RPCRT4.@)
1474  */
1475 RPC_STATUS WINAPI RpcNetworkIsProtseqValidA(RPC_CSTR protseq)
1476 {
1477   UNICODE_STRING protseqW;
1478
1479   if (RtlCreateUnicodeStringFromAsciiz(&protseqW, (char*)protseq))
1480   {
1481     RPC_STATUS ret = RpcNetworkIsProtseqValidW(protseqW.Buffer);
1482     RtlFreeUnicodeString(&protseqW);
1483     return ret;
1484   }
1485   return RPC_S_OUT_OF_MEMORY;
1486 }