source3/rpc_server/rpc_server.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Generic infrstructure for RPC Daemons
   4    Copyright (C) Simo Sorce 2010
   5    Copyright (C) Andrew Bartlett 2011
   6    Copyright (C) Andreas Schneider 2011
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "rpc_server/rpc_pipes.h"
  24 #include "rpc_server/rpc_server.h"
  25 #include "rpc_server/rpc_config.h"
  26 #include "rpc_dce.h"
  27 #include "librpc/gen_ndr/netlogon.h"
  28 #include "librpc/gen_ndr/auth.h"
  29 #include "lib/tsocket/tsocket.h"
  30 #include "libcli/named_pipe_auth/npa_tstream.h"
  31 #include "../auth/auth_sam_reply.h"
  32 #include "auth.h"
  33 #include "rpc_server/rpc_ncacn_np.h"
  34 #include "rpc_server/srv_pipe_hnd.h"
  35 #include "rpc_server/srv_pipe.h"
  36
  37 #define SERVER_TCP_LOW_PORT  1024
  38 #define SERVER_TCP_HIGH_PORT 1300
  39
  40 static NTSTATUS auth_anonymous_session_info(TALLOC_CTX *mem_ctx,
  41                                             struct auth_session_info **session_info)
  42 {
  43         NTSTATUS status;
  44
  45         status = make_session_info_guest(mem_ctx, session_info);
  46         if (!NT_STATUS_IS_OK(status)) {
  47                 return status;
  48         }
  49
  50         return NT_STATUS_OK;
  51 }
  52
  53 /* Creates a pipes_struct and initializes it with the information
  54  * sent from the client */
  55 static int make_server_pipes_struct(TALLOC_CTX *mem_ctx,
  56                                     struct messaging_context *msg_ctx,
  57                                     const char *pipe_name,
  58                                     enum dcerpc_transport_t transport,
  59                                     bool ncalrpc_as_system,
  60                                     const struct tsocket_address *local_address,
  61                                     const struct tsocket_address *remote_address,
  62                                     struct auth_session_info *session_info,
  63                                     struct pipes_struct **_p,
  64                                     int *perrno)
  65 {
  66         struct pipes_struct *p;
  67         NTSTATUS status;
  68         int ret;
  69
  70         ret = make_base_pipes_struct(mem_ctx, msg_ctx, pipe_name,
  71                                      transport, RPC_LITTLE_ENDIAN,
  72                                      ncalrpc_as_system,
  73                                      remote_address, local_address, &p);
  74         if (ret) {
  75                 *perrno = ret;
  76                 return -1;
  77         }
  78
  79         if (session_info->unix_token && session_info->unix_info && session_info->security_token) {
  80                 /* Don't call create_local_token(), we already have the full details here */
  81                 p->session_info = talloc_steal(p, session_info);
  82
  83         } else {
  84                 struct auth_user_info_dc *auth_user_info_dc;
  85                 struct auth_serversupplied_info *server_info;
  86                 struct netr_SamInfo3 *info3;
  87
  88                 /* Fake up an auth_user_info_dc for now, to make an info3, to make the session_info structure */
  89                 auth_user_info_dc = talloc_zero(p, struct auth_user_info_dc);
  90                 if (!auth_user_info_dc) {
  91                         TALLOC_FREE(p);
  92                         *perrno = ENOMEM;
  93                         return -1;
  94                 }
  95
  96                 auth_user_info_dc->num_sids = session_info->security_token->num_sids;
  97                 auth_user_info_dc->sids = session_info->security_token->sids;
  98                 auth_user_info_dc->info = session_info->info;
  99                 auth_user_info_dc->user_session_key = session_info->session_key;
 100
 101                 /* This creates the input structure that make_server_info_info3 is looking for */
 102                 status = auth_convert_user_info_dc_saminfo3(p, auth_user_info_dc,
 103                                                             &info3);
 104
 105                 if (!NT_STATUS_IS_OK(status)) {
 106                         DEBUG(1, ("Failed to convert auth_user_info_dc into netr_SamInfo3\n"));
 107                         TALLOC_FREE(p);
 108                         *perrno = EINVAL;
 109                         return -1;
 110                 }
 111
 112                 status = make_server_info_info3(p,
 113                                                 info3->base.account_name.string,
 114                                                 info3->base.logon_domain.string,
 115                                                 &server_info, info3);
 116                 if (!NT_STATUS_IS_OK(status)) {
 117                         DEBUG(1, ("Failed to init server info\n"));
 118                         TALLOC_FREE(p);
 119                         *perrno = EINVAL;
 120                         return -1;
 121                 }
 122
 123                 /*
 124                  * Some internal functions need a local token to determine access to
 125                  * resources.
 126                  */
 127                 status = create_local_token(p, server_info, &session_info->session_key, info3->base.account_name.string,
 128                                             &p->session_info);
 129                 talloc_free(server_info);
 130                 if (!NT_STATUS_IS_OK(status)) {
 131                         DEBUG(1, ("Failed to init local auth token\n"));
 132                         TALLOC_FREE(p);
 133                         *perrno = EINVAL;
 134                         return -1;
 135                 }
 136         }
 137
 138         *_p = p;
 139         return 0;
 140 }
 141
 142 /* Start listening on the appropriate unix socket and setup all is needed to
 143  * dispatch requests to the pipes rpc implementation */
 144
 145 struct dcerpc_ncacn_listen_state {
 146         struct ndr_syntax_id syntax_id;
 147
 148         int fd;
 149         union {
 150                 char *name;
 151                 uint16_t port;
 152         } ep;
 153
 154         struct tevent_context *ev_ctx;
 155         struct messaging_context *msg_ctx;
 156         dcerpc_ncacn_disconnect_fn disconnect_fn;
 157 };
 158
 159 static void named_pipe_listener(struct tevent_context *ev,
 160                                 struct tevent_fd *fde,
 161                                 uint16_t flags,
 162                                 void *private_data);
 163
 164 int create_named_pipe_socket(const char *pipe_name)
 165 {
 166         char *np_dir = NULL;
 167         int fd = -1;
 168
 169         /*
 170          * As lp_ncalrpc_dir() should have 0755, but
 171          * lp_ncalrpc_dir()/np should have 0700, we need to
 172          * create lp_ncalrpc_dir() first.
 173          */
 174         if (!directory_create_or_exist(lp_ncalrpc_dir(), geteuid(), 0755)) {
 175                 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
 176                           lp_ncalrpc_dir(), strerror(errno)));
 177                 goto out;
 178         }
 179
 180         np_dir = talloc_asprintf(talloc_tos(), "%s/np", lp_ncalrpc_dir());
 181         if (!np_dir) {
 182                 DEBUG(0, ("Out of memory\n"));
 183                 goto out;
 184         }
 185
 186         if (!directory_create_or_exist(np_dir, geteuid(), 0700)) {
 187                 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
 188                           np_dir, strerror(errno)));
 189                 goto out;
 190         }
 191
 192         fd = create_pipe_sock(np_dir, pipe_name, 0700);
 193         if (fd == -1) {
 194                 DEBUG(0, ("Failed to create pipe socket! [%s/%s]\n",
 195                           np_dir, pipe_name));
 196                 goto out;
 197         }
 198
 199         DEBUG(10, ("Openened pipe socket fd %d for %s\n", fd, pipe_name));
 200
 201 out:
 202         talloc_free(np_dir);
 203         return fd;
 204 }
 205
 206 bool setup_named_pipe_socket(const char *pipe_name,
 207                              struct tevent_context *ev_ctx,
 208                              struct messaging_context *msg_ctx)
 209 {
 210         struct dcerpc_ncacn_listen_state *state;
 211         struct tevent_fd *fde;
 212         int rc;
 213
 214         state = talloc(ev_ctx, struct dcerpc_ncacn_listen_state);
 215         if (!state) {
 216                 DEBUG(0, ("Out of memory\n"));
 217                 return false;
 218         }
 219         state->ep.name = talloc_strdup(state, pipe_name);
 220         if (state->ep.name == NULL) {
 221                 DEBUG(0, ("Out of memory\n"));
 222                 goto out;
 223         }
 224         state->fd = create_named_pipe_socket(pipe_name);
 225         if (state->fd == -1) {
 226                 goto out;
 227         }
 228
 229         rc = listen(state->fd, 5);
 230         if (rc < 0) {
 231                 DEBUG(0, ("Failed to listen on pipe socket %s: %s\n",
 232                           pipe_name, strerror(errno)));
 233                 goto out;
 234         }
 235
 236         state->ev_ctx = ev_ctx;
 237         state->msg_ctx = msg_ctx;
 238
 239         DEBUG(10, ("Openened pipe socket fd %d for %s\n",
 240                    state->fd, pipe_name));
 241
 242         fde = tevent_add_fd(ev_ctx,
 243                             state, state->fd, TEVENT_FD_READ,
 244                             named_pipe_listener, state);
 245         if (!fde) {
 246                 DEBUG(0, ("Failed to add event handler!\n"));
 247                 goto out;
 248         }
 249
 250         tevent_fd_set_auto_close(fde);
 251         return true;
 252
 253 out:
 254         if (state->fd != -1) {
 255                 close(state->fd);
 256         }
 257         TALLOC_FREE(state);
 258         return false;
 259 }
 260
 261 static void named_pipe_listener(struct tevent_context *ev,
 262                                 struct tevent_fd *fde,
 263                                 uint16_t flags,
 264                                 void *private_data)
 265 {
 266         struct dcerpc_ncacn_listen_state *state =
 267                         talloc_get_type_abort(private_data,
 268                                               struct dcerpc_ncacn_listen_state);
 269         struct sockaddr_un sunaddr;
 270         socklen_t len;
 271         int sd = -1;
 272
 273         /* TODO: should we have a limit to the number of clients ? */
 274
 275         len = sizeof(sunaddr);
 276
 277         sd = accept(state->fd,
 278                     (struct sockaddr *)(void *)&sunaddr, &len);
 279
 280         if (sd == -1) {
 281                 if (errno != EINTR) {
 282                         DEBUG(6, ("Failed to get a valid socket [%s]\n",
 283                                   strerror(errno)));
 284                 }
 285                 return;
 286         }
 287
 288         DEBUG(6, ("Accepted socket %d\n", sd));
 289
 290         named_pipe_accept_function(state->ev_ctx,
 291                                    state->msg_ctx,
 292                                    state->ep.name,
 293                                    sd, NULL, 0);
 294 }
 295
 296
 297 /* This is the core of the rpc server.
 298  * Accepts connections from clients and process requests using the appropriate
 299  * dispatcher table. */
 300
 301 struct named_pipe_client {
 302         const char *pipe_name;
 303
 304         struct tevent_context *ev;
 305         struct messaging_context *msg_ctx;
 306
 307         uint16_t file_type;
 308         uint16_t device_state;
 309         uint64_t allocation_size;
 310
 311         struct tstream_context *tstream;
 312
 313         struct tsocket_address *client;
 314         char *client_name;
 315         struct tsocket_address *server;
 316         char *server_name;
 317
 318         struct auth_session_info *session_info;
 319
 320         struct pipes_struct *p;
 321
 322         struct tevent_queue *write_queue;
 323
 324         struct iovec *iov;
 325         size_t count;
 326
 327         named_pipe_termination_fn *term_fn;
 328         void *private_data;
 329 };
 330
 331 static int named_pipe_destructor(struct named_pipe_client *npc)
 332 {
 333         if (npc->term_fn) {
 334                 npc->term_fn(npc->private_data);
 335         }
 336         return 0;
 337 }
 338
 339 static void named_pipe_accept_done(struct tevent_req *subreq);
 340
 341 void named_pipe_accept_function(struct tevent_context *ev_ctx,
 342                                 struct messaging_context *msg_ctx,
 343                                 const char *pipe_name, int fd,
 344                                 named_pipe_termination_fn *term_fn,
 345                                 void *private_data)
 346 {
 347         struct named_pipe_client *npc;
 348         struct tstream_context *plain;
 349         struct tevent_req *subreq;
 350         int ret;
 351
 352         npc = talloc_zero(ev_ctx, struct named_pipe_client);
 353         if (!npc) {
 354                 DEBUG(0, ("Out of memory!\n"));
 355                 close(fd);
 356                 return;
 357         }
 358
 359         npc->pipe_name = talloc_strdup(npc, pipe_name);
 360         if (npc->pipe_name == NULL) {
 361                 DEBUG(0, ("Out of memory!\n"));
 362                 TALLOC_FREE(npc);
 363                 close(fd);
 364                 return;
 365         }
 366         npc->ev = ev_ctx;
 367         npc->msg_ctx = msg_ctx;
 368         npc->term_fn = term_fn;
 369         npc->private_data = private_data;
 370
 371         talloc_set_destructor(npc, named_pipe_destructor);
 372
 373         /* make sure socket is in NON blocking state */
 374         ret = set_blocking(fd, false);
 375         if (ret != 0) {
 376                 DEBUG(2, ("Failed to make socket non-blocking\n"));
 377                 TALLOC_FREE(npc);
 378                 close(fd);
 379                 return;
 380         }
 381
 382         ret = tstream_bsd_existing_socket(npc, fd, &plain);
 383         if (ret != 0) {
 384                 DEBUG(2, ("Failed to create tstream socket\n"));
 385                 TALLOC_FREE(npc);
 386                 close(fd);
 387                 return;
 388         }
 389
 390         npc->file_type = FILE_TYPE_MESSAGE_MODE_PIPE;
 391         npc->device_state = 0xff | 0x0400 | 0x0100;
 392         npc->allocation_size = 4096;
 393
 394         subreq = tstream_npa_accept_existing_send(npc, npc->ev, plain,
 395                                                   npc->file_type,
 396                                                   npc->device_state,
 397                                                   npc->allocation_size);
 398         if (!subreq) {
 399                 DEBUG(2, ("Failed to start async accept procedure\n"));
 400                 TALLOC_FREE(npc);
 401                 close(fd);
 402                 return;
 403         }
 404         tevent_req_set_callback(subreq, named_pipe_accept_done, npc);
 405 }
 406
 407 static void named_pipe_packet_process(struct tevent_req *subreq);
 408 static void named_pipe_packet_done(struct tevent_req *subreq);
 409
 410 static void named_pipe_accept_done(struct tevent_req *subreq)
 411 {
 412         struct auth_session_info_transport *session_info_transport;
 413         struct named_pipe_client *npc =
 414                 tevent_req_callback_data(subreq, struct named_pipe_client);
 415         int error;
 416         int ret;
 417
 418         ret = tstream_npa_accept_existing_recv(subreq, &error, npc,
 419                                                 &npc->tstream,
 420                                                 &npc->client,
 421                                                 &npc->client_name,
 422                                                 &npc->server,
 423                                                 &npc->server_name,
 424                                                 &session_info_transport);
 425
 426         npc->session_info = talloc_move(npc, &session_info_transport->session_info);
 427
 428         TALLOC_FREE(subreq);
 429         if (ret != 0) {
 430                 DEBUG(2, ("Failed to accept named pipe connection! (%s)\n",
 431                           strerror(error)));
 432                 TALLOC_FREE(npc);
 433                 return;
 434         }
 435
 436         ret = make_server_pipes_struct(npc,
 437                                        npc->msg_ctx,
 438                                        npc->pipe_name, NCACN_NP,
 439                                         false, npc->server, npc->client, npc->session_info,
 440                                         &npc->p, &error);
 441         if (ret != 0) {
 442                 DEBUG(2, ("Failed to create pipes_struct! (%s)\n",
 443                           strerror(error)));
 444                 goto fail;
 445         }
 446
 447         npc->write_queue = tevent_queue_create(npc, "np_server_write_queue");
 448         if (!npc->write_queue) {
 449                 DEBUG(2, ("Failed to set up write queue!\n"));
 450                 goto fail;
 451         }
 452
 453         /* And now start receiving and processing packets */
 454         subreq = dcerpc_read_ncacn_packet_send(npc, npc->ev, npc->tstream);
 455         if (!subreq) {
 456                 DEBUG(2, ("Failed to start receving packets\n"));
 457                 goto fail;
 458         }
 459         tevent_req_set_callback(subreq, named_pipe_packet_process, npc);
 460         return;
 461
 462 fail:
 463         DEBUG(2, ("Fatal error. Terminating client(%s) connection!\n",
 464                   npc->client_name));
 465         /* terminate client connection */
 466         talloc_free(npc);
 467         return;
 468 }
 469
 470 static void named_pipe_packet_process(struct tevent_req *subreq)
 471 {
 472         struct named_pipe_client *npc =
 473                 tevent_req_callback_data(subreq, struct named_pipe_client);
 474         struct _output_data *out = &npc->p->out_data;
 475         DATA_BLOB recv_buffer = data_blob_null;
 476         struct ncacn_packet *pkt;
 477         NTSTATUS status;
 478         ssize_t data_left;
 479         ssize_t data_used;
 480         char *data;
 481         uint32_t to_send;
 482         size_t i;
 483         bool ok;
 484
 485         status = dcerpc_read_ncacn_packet_recv(subreq, npc, &pkt, &recv_buffer);
 486         TALLOC_FREE(subreq);
 487         if (!NT_STATUS_IS_OK(status)) {
 488                 goto fail;
 489         }
 490
 491         data_left = recv_buffer.length;
 492         data = (char *)recv_buffer.data;
 493
 494         while (data_left) {
 495
 496                 data_used = process_incoming_data(npc->p, data, data_left);
 497                 if (data_used < 0) {
 498                         DEBUG(3, ("Failed to process dceprc request!\n"));
 499                         status = NT_STATUS_UNEXPECTED_IO_ERROR;
 500                         goto fail;
 501                 }
 502
 503                 data_left -= data_used;
 504                 data += data_used;
 505         }
 506
 507         /* Do not leak this buffer, npc is a long lived context */
 508         talloc_free(recv_buffer.data);
 509         talloc_free(pkt);
 510
 511         /* this is needed because of the way DCERPC Binds work in
 512          * the RPC marshalling code */
 513         to_send = out->frag.length - out->current_pdu_sent;
 514         if (to_send > 0) {
 515
 516                 npc->iov = talloc_zero(npc, struct iovec);
 517                 if (!npc->iov) {
 518                         status = NT_STATUS_NO_MEMORY;
 519                         goto fail;
 520                 }
 521                 npc->count = 1;
 522
 523                 npc->iov[0].iov_base = out->frag.data
 524                                         + out->current_pdu_sent;
 525                 npc->iov[0].iov_len = to_send;
 526
 527                 out->current_pdu_sent += to_send;
 528         }
 529
 530         /* this condition is false for bind packets, or when we haven't
 531          * yet got a full request, and need to wait for more data from
 532          * the client */
 533         while (out->data_sent_length < out->rdata.length) {
 534
 535                 ok = create_next_pdu(npc->p);
 536                 if (!ok) {
 537                         DEBUG(3, ("Failed to create next PDU!\n"));
 538                         status = NT_STATUS_UNEXPECTED_IO_ERROR;
 539                         goto fail;
 540                 }
 541
 542                 npc->iov = talloc_realloc(npc, npc->iov,
 543                                             struct iovec, npc->count + 1);
 544                 if (!npc->iov) {
 545                         status = NT_STATUS_NO_MEMORY;
 546                         goto fail;
 547                 }
 548
 549                 npc->iov[npc->count].iov_base = out->frag.data;
 550                 npc->iov[npc->count].iov_len = out->frag.length;
 551
 552                 npc->count++;
 553         }
 554
 555         /* we still don't have a complete request, go back and wait for more
 556          * data */
 557         if (npc->count == 0) {
 558                 /* Wait for the next packet */
 559                 subreq = dcerpc_read_ncacn_packet_send(npc, npc->ev, npc->tstream);
 560                 if (!subreq) {
 561                         DEBUG(2, ("Failed to start receving packets\n"));
 562                         status = NT_STATUS_NO_MEMORY;
 563                         goto fail;
 564                 }
 565                 tevent_req_set_callback(subreq, named_pipe_packet_process, npc);
 566                 return;
 567         }
 568
 569         DEBUG(10, ("Sending %u fragments in a total of %u bytes\n",
 570                    (unsigned int)npc->count,
 571                    (unsigned int)npc->p->out_data.data_sent_length));
 572
 573         for (i = 0; i < npc->count; i++) {
 574                 DEBUG(10, ("Sending PDU number: %d, PDU Length: %u\n",
 575                           (unsigned int)i,
 576                           (unsigned int)npc->iov[i].iov_len));
 577                 dump_data(11, (const uint8_t *)npc->iov[i].iov_base,
 578                                 npc->iov[i].iov_len);
 579
 580                 subreq = tstream_writev_queue_send(npc,
 581                                                    npc->ev,
 582                                                    npc->tstream,
 583                                                    npc->write_queue,
 584                                                    (npc->iov + i),
 585                                                    1);
 586                 if (!subreq) {
 587                         DEBUG(2, ("Failed to send packet\n"));
 588                         status = NT_STATUS_NO_MEMORY;
 589                         goto fail;
 590                 }
 591                 tevent_req_set_callback(subreq, named_pipe_packet_done, npc);
 592         }
 593
 594         return;
 595
 596 fail:
 597         DEBUG(2, ("Fatal error(%s). "
 598                   "Terminating client(%s) connection!\n",
 599                   nt_errstr(status), npc->client_name));
 600         /* terminate client connection */
 601         talloc_free(npc);
 602         return;
 603 }
 604
 605 static void named_pipe_packet_done(struct tevent_req *subreq)
 606 {
 607         struct named_pipe_client *npc =
 608                 tevent_req_callback_data(subreq, struct named_pipe_client);
 609         int sys_errno;
 610         int ret;
 611
 612         ret = tstream_writev_queue_recv(subreq, &sys_errno);
 613         TALLOC_FREE(subreq);
 614         if (ret == -1) {
 615                 DEBUG(2, ("Writev failed!\n"));
 616                 goto fail;
 617         }
 618
 619         if (tevent_queue_length(npc->write_queue) > 0) {
 620                 return;
 621         }
 622
 623         /* clear out any data that may have been left around */
 624         npc->count = 0;
 625         TALLOC_FREE(npc->iov);
 626         data_blob_free(&npc->p->in_data.data);
 627         data_blob_free(&npc->p->out_data.frag);
 628         data_blob_free(&npc->p->out_data.rdata);
 629
 630         talloc_free_children(npc->p->mem_ctx);
 631
 632         /* Wait for the next packet */
 633         subreq = dcerpc_read_ncacn_packet_send(npc, npc->ev, npc->tstream);
 634         if (!subreq) {
 635                 DEBUG(2, ("Failed to start receving packets\n"));
 636                 sys_errno = ENOMEM;
 637                 goto fail;
 638         }
 639         tevent_req_set_callback(subreq, named_pipe_packet_process, npc);
 640         return;
 641
 642 fail:
 643         DEBUG(2, ("Fatal error(%s). "
 644                   "Terminating client(%s) connection!\n",
 645                   strerror(sys_errno), npc->client_name));
 646         /* terminate client connection */
 647         talloc_free(npc);
 648         return;
 649 }
 650
 651 /********************************************************************
 652  * Start listening on the tcp/ip socket
 653  ********************************************************************/
 654
 655 static void dcerpc_ncacn_tcpip_listener(struct tevent_context *ev,
 656                                         struct tevent_fd *fde,
 657                                         uint16_t flags,
 658                                         void *private_data);
 659
 660 int create_tcpip_socket(const struct sockaddr_storage *ifss, uint16_t *port)
 661 {
 662         int fd = -1;
 663
 664         if (*port == 0) {
 665                 uint16_t i;
 666
 667                 for (i = SERVER_TCP_LOW_PORT; i <= SERVER_TCP_HIGH_PORT; i++) {
 668                         fd = open_socket_in(SOCK_STREAM,
 669                                             i,
 670                                             0,
 671                                             ifss,
 672                                             false);
 673                         if (fd > 0) {
 674                                 *port = i;
 675                                 break;
 676                         }
 677                 }
 678         } else {
 679                 fd = open_socket_in(SOCK_STREAM,
 680                                     *port,
 681                                     0,
 682                                     ifss,
 683                                     true);
 684         }
 685         if (fd == -1) {
 686                 DEBUG(0, ("Failed to create socket on port %u!\n", *port));
 687                 return -1;
 688         }
 689
 690         DEBUG(10, ("Opened tcpip socket fd %d for port %u\n", fd, *port));
 691
 692         return fd;
 693 }
 694
 695 uint16_t setup_dcerpc_ncacn_tcpip_socket(struct tevent_context *ev_ctx,
 696                                          struct messaging_context *msg_ctx,
 697                                          const struct sockaddr_storage *ifss,
 698                                          uint16_t port)
 699 {
 700         struct dcerpc_ncacn_listen_state *state;
 701         struct tevent_fd *fde;
 702         int rc;
 703
 704         state = talloc(ev_ctx, struct dcerpc_ncacn_listen_state);
 705         if (state == NULL) {
 706                 DEBUG(0, ("setup_dcerpc_ncacn_tcpip_socket: Out of memory\n"));
 707                 return 0;
 708         }
 709
 710         state->fd = -1;
 711         state->ep.port = port;
 712         state->disconnect_fn = NULL;
 713
 714         state->fd = create_tcpip_socket(ifss, &state->ep.port);
 715         if (state->fd == -1) {
 716                 goto out;
 717         }
 718
 719         state->ev_ctx = ev_ctx;
 720         state->msg_ctx = msg_ctx;
 721
 722         /* ready to listen */
 723         set_socket_options(state->fd, "SO_KEEPALIVE");
 724         set_socket_options(state->fd, lp_socket_options());
 725
 726         /* Set server socket to non-blocking for the accept. */
 727         set_blocking(state->fd, false);
 728
 729         rc = listen(state->fd, SMBD_LISTEN_BACKLOG);
 730         if (rc == -1) {
 731                 DEBUG(0,("setup_tcpip_socket: listen - %s\n", strerror(errno)));
 732                 goto out;
 733         }
 734
 735         DEBUG(10, ("setup_tcpip_socket: openened socket fd %d for port %u\n",
 736                    state->fd, state->ep.port));
 737
 738         fde = tevent_add_fd(state->ev_ctx,
 739                             state,
 740                             state->fd,
 741                             TEVENT_FD_READ,
 742                             dcerpc_ncacn_tcpip_listener,
 743                             state);
 744         if (fde == NULL) {
 745                 DEBUG(0, ("setup_tcpip_socket: Failed to add event handler!\n"));
 746                 goto out;
 747         }
 748
 749         tevent_fd_set_auto_close(fde);
 750
 751         return state->ep.port;
 752 out:
 753         if (state->fd != -1) {
 754                 close(state->fd);
 755         }
 756         TALLOC_FREE(state);
 757
 758         return 0;
 759 }
 760
 761 static void dcerpc_ncacn_tcpip_listener(struct tevent_context *ev,
 762                                         struct tevent_fd *fde,
 763                                         uint16_t flags,
 764                                         void *private_data)
 765 {
 766         struct dcerpc_ncacn_listen_state *state =
 767                         talloc_get_type_abort(private_data,
 768                                               struct dcerpc_ncacn_listen_state);
 769         struct tsocket_address *cli_addr = NULL;
 770         struct tsocket_address *srv_addr = NULL;
 771         struct sockaddr_storage addr;
 772         socklen_t in_addrlen = sizeof(addr);
 773         int s = -1;
 774         int rc;
 775
 776         s = accept(state->fd, (struct sockaddr *)(void *) &addr, &in_addrlen);
 777         if (s == -1) {
 778                 if (errno != EINTR) {
 779                         DEBUG(0,("tcpip_listener accept: %s\n",
 780                                  strerror(errno)));
 781                 }
 782                 return;
 783         }
 784
 785         rc = tsocket_address_bsd_from_sockaddr(state,
 786                                                (struct sockaddr *)(void *) &addr,
 787                                                in_addrlen,
 788                                                &cli_addr);
 789         if (rc < 0) {
 790                 close(s);
 791                 return;
 792         }
 793
 794         rc = getsockname(s, (struct sockaddr *)(void *) &addr, &in_addrlen);
 795         if (rc < 0) {
 796                 close(s);
 797                 return;
 798         }
 799
 800         rc = tsocket_address_bsd_from_sockaddr(state,
 801                                                (struct sockaddr *)(void *) &addr,
 802                                                in_addrlen,
 803                                                &srv_addr);
 804         if (rc < 0) {
 805                 close(s);
 806                 return;
 807         }
 808
 809         DEBUG(6, ("tcpip_listener: Accepted socket %d\n", s));
 810
 811         dcerpc_ncacn_accept(state->ev_ctx,
 812                             state->msg_ctx,
 813                             NCACN_IP_TCP,
 814                             NULL,
 815                             cli_addr,
 816                             srv_addr,
 817                             s,
 818                             NULL);
 819 }
 820
 821 /********************************************************************
 822  * Start listening on the ncalrpc socket
 823  ********************************************************************/
 824
 825 static void dcerpc_ncalrpc_listener(struct tevent_context *ev,
 826                                     struct tevent_fd *fde,
 827                                     uint16_t flags,
 828                                     void *private_data);
 829
 830 int create_dcerpc_ncalrpc_socket(const char *name)
 831 {
 832         int fd = -1;
 833
 834         if (name == NULL) {
 835                 name = "DEFAULT";
 836         }
 837
 838         if (!directory_create_or_exist(lp_ncalrpc_dir(), geteuid(), 0755)) {
 839                 DEBUG(0, ("Failed to create ncalrpc directory %s - %s\n",
 840                           lp_ncalrpc_dir(), strerror(errno)));
 841                 return -1;
 842         }
 843
 844         fd = create_pipe_sock(lp_ncalrpc_dir(), name, 0755);
 845         if (fd == -1) {
 846                 DEBUG(0, ("Failed to create ncalrpc socket! [%s/%s]\n",
 847                           lp_ncalrpc_dir(), name));
 848                 return -1;
 849         }
 850
 851         DEBUG(10, ("Openened ncalrpc socket fd %d for %s\n", fd, name));
 852
 853         return fd;
 854 }
 855
 856 bool setup_dcerpc_ncalrpc_socket(struct tevent_context *ev_ctx,
 857                                  struct messaging_context *msg_ctx,
 858                                  const char *name,
 859                                  dcerpc_ncacn_disconnect_fn fn)
 860 {
 861         struct dcerpc_ncacn_listen_state *state;
 862         struct tevent_fd *fde;
 863         int rc;
 864
 865         state = talloc(ev_ctx, struct dcerpc_ncacn_listen_state);
 866         if (state == NULL) {
 867                 DEBUG(0, ("Out of memory\n"));
 868                 return false;
 869         }
 870
 871         state->fd = -1;
 872         state->disconnect_fn = fn;
 873
 874         if (name == NULL) {
 875                 name = "DEFAULT";
 876         }
 877
 878         state->ep.name = talloc_strdup(state, name);
 879         if (state->ep.name == NULL) {
 880                 DEBUG(0, ("Out of memory\n"));
 881                 talloc_free(state);
 882                 return false;
 883         }
 884
 885         state->fd = create_dcerpc_ncalrpc_socket(name);
 886         if (state->fd == -1) {
 887                 goto out;
 888         }
 889
 890         rc = listen(state->fd, 5);
 891         if (rc < 0) {
 892                 DEBUG(0, ("Failed to listen on ncalrpc socket %s: %s\n",
 893                           name, strerror(errno)));
 894                 goto out;
 895         }
 896
 897         state->ev_ctx = ev_ctx;
 898         state->msg_ctx = msg_ctx;
 899
 900         /* Set server socket to non-blocking for the accept. */
 901         set_blocking(state->fd, false);
 902
 903         fde = tevent_add_fd(state->ev_ctx,
 904                             state,
 905                             state->fd,
 906                             TEVENT_FD_READ,
 907                             dcerpc_ncalrpc_listener,
 908                             state);
 909         if (fde == NULL) {
 910                 DEBUG(0, ("Failed to add event handler for ncalrpc!\n"));
 911                 goto out;
 912         }
 913
 914         tevent_fd_set_auto_close(fde);
 915
 916         return true;
 917 out:
 918         if (state->fd != -1) {
 919                 close(state->fd);
 920         }
 921         TALLOC_FREE(state);
 922
 923         return 0;
 924 }
 925
 926 static void dcerpc_ncalrpc_listener(struct tevent_context *ev,
 927                                         struct tevent_fd *fde,
 928                                         uint16_t flags,
 929                                         void *private_data)
 930 {
 931         struct dcerpc_ncacn_listen_state *state =
 932                         talloc_get_type_abort(private_data,
 933                                               struct dcerpc_ncacn_listen_state);
 934         struct tsocket_address *cli_addr = NULL;
 935         struct sockaddr_un sunaddr;
 936         struct sockaddr *addr = (struct sockaddr *)(void *)&sunaddr;
 937         socklen_t len = sizeof(sunaddr);
 938         int sd = -1;
 939         int rc;
 940
 941         ZERO_STRUCT(sunaddr);
 942
 943         sd = accept(state->fd, addr, &len);
 944         if (sd == -1) {
 945                 if (errno != EINTR) {
 946                         DEBUG(0, ("ncalrpc accept() failed: %s\n", strerror(errno)));
 947                 }
 948                 return;
 949         }
 950
 951         rc = tsocket_address_bsd_from_sockaddr(state,
 952                                                addr, len,
 953                                                &cli_addr);
 954         if (rc < 0) {
 955                 close(sd);
 956                 return;
 957         }
 958
 959         DEBUG(10, ("Accepted ncalrpc socket %d\n", sd));
 960
 961         dcerpc_ncacn_accept(state->ev_ctx,
 962                             state->msg_ctx,
 963                             NCALRPC,
 964                             state->ep.name,
 965                             cli_addr, NULL, sd,
 966                             state->disconnect_fn);
 967 }
 968
 969 struct dcerpc_ncacn_conn {
 970         enum dcerpc_transport_t transport;
 971
 972         int sock;
 973
 974         struct pipes_struct *p;
 975         dcerpc_ncacn_disconnect_fn disconnect_fn;
 976
 977         struct tevent_context *ev_ctx;
 978         struct messaging_context *msg_ctx;
 979
 980         struct tstream_context *tstream;
 981         struct tevent_queue *send_queue;
 982
 983         struct tsocket_address *client;
 984         char *client_name;
 985         struct tsocket_address *server;
 986         char *server_name;
 987         struct auth_session_info *session_info;
 988
 989         struct iovec *iov;
 990         size_t count;
 991 };
 992
 993 static void dcerpc_ncacn_packet_process(struct tevent_req *subreq);
 994 static void dcerpc_ncacn_packet_done(struct tevent_req *subreq);
 995
 996 void dcerpc_ncacn_accept(struct tevent_context *ev_ctx,
 997                          struct messaging_context *msg_ctx,
 998                          enum dcerpc_transport_t transport,
 999                          const char *name,
1000                          struct tsocket_address *cli_addr,
1001                          struct tsocket_address *srv_addr,
1002                          int s,
1003                          dcerpc_ncacn_disconnect_fn fn) {
1004         struct dcerpc_ncacn_conn *ncacn_conn;
1005         struct tevent_req *subreq;
1006         bool system_user = false;
1007         char *pipe_name;
1008         NTSTATUS status;
1009         int sys_errno;
1010         uid_t uid;
1011         int rc;
1012
1013         DEBUG(10, ("dcerpc_ncacn_accept\n"));
1014
1015         ncacn_conn = talloc_zero(ev_ctx, struct dcerpc_ncacn_conn);
1016         if (ncacn_conn == NULL) {
1017                 DEBUG(0, ("Out of memory!\n"));
1018                 close(s);
1019                 return;
1020         }
1021
1022         ncacn_conn->transport = transport;
1023         ncacn_conn->ev_ctx = ev_ctx;
1024         ncacn_conn->msg_ctx = msg_ctx;
1025         ncacn_conn->sock = s;
1026         ncacn_conn->disconnect_fn = fn;
1027
1028         ncacn_conn->client = talloc_move(ncacn_conn, &cli_addr);
1029         if (tsocket_address_is_inet(ncacn_conn->client, "ip")) {
1030                 ncacn_conn->client_name =
1031                         tsocket_address_inet_addr_string(ncacn_conn->client,
1032                                                          ncacn_conn);
1033         } else {
1034                 ncacn_conn->client_name =
1035                         tsocket_address_unix_path(ncacn_conn->client,
1036                                                   ncacn_conn);
1037         }
1038         if (ncacn_conn->client_name == NULL) {
1039                 DEBUG(0, ("Out of memory!\n"));
1040                 talloc_free(ncacn_conn);
1041                 close(s);
1042                 return;
1043         }
1044
1045         if (srv_addr != NULL) {
1046                 ncacn_conn->server = talloc_move(ncacn_conn, &srv_addr);
1047
1048                 ncacn_conn->server_name =
1049                         tsocket_address_inet_addr_string(ncacn_conn->server,
1050                                                          ncacn_conn);
1051                 if (ncacn_conn->server_name == NULL) {
1052                         DEBUG(0, ("Out of memory!\n"));
1053                         talloc_free(ncacn_conn);
1054                         close(s);
1055                         return;
1056                 }
1057         }
1058
1059         switch (transport) {
1060                 case NCACN_IP_TCP:
1061                         pipe_name = tsocket_address_string(ncacn_conn->client,
1062                                                            ncacn_conn);
1063                         if (pipe_name == NULL) {
1064                                 close(s);
1065                                 talloc_free(ncacn_conn);
1066                                 return;
1067                         }
1068
1069                         break;
1070                 case NCALRPC:
1071                         rc = sys_getpeereid(s, &uid);
1072                         if (rc < 0) {
1073                                 DEBUG(2, ("Failed to get ncalrpc connecting "
1074                                           "uid - %s!\n", strerror(errno)));
1075                         } else {
1076                                 if (uid == sec_initial_uid()) {
1077                                         system_user = true;
1078                                 }
1079                         }
1080                 case NCACN_NP:
1081                         pipe_name = talloc_strdup(ncacn_conn,
1082                                                   name);
1083                         if (pipe_name == NULL) {
1084                                 close(s);
1085                                 talloc_free(ncacn_conn);
1086                                 return;
1087                         }
1088                         break;
1089                 default:
1090                         DEBUG(0, ("unknown dcerpc transport: %u!\n",
1091                                   transport));
1092                         talloc_free(ncacn_conn);
1093                         close(s);
1094                         return;
1095         }
1096
1097         rc = set_blocking(s, false);
1098         if (rc < 0) {
1099                 DEBUG(2, ("Failed to set dcerpc socket to non-blocking\n"));
1100                 talloc_free(ncacn_conn);
1101                 close(s);
1102                 return;
1103         }
1104
1105         /*
1106          * As soon as we have tstream_bsd_existing_socket set up it will
1107          * take care of closing the socket.
1108          */
1109         rc = tstream_bsd_existing_socket(ncacn_conn, s, &ncacn_conn->tstream);
1110         if (rc < 0) {
1111                 DEBUG(2, ("Failed to create tstream socket for dcerpc\n"));
1112                 talloc_free(ncacn_conn);
1113                 close(s);
1114                 return;
1115         }
1116
1117         if (ncacn_conn->session_info == NULL) {
1118                 status = auth_anonymous_session_info(ncacn_conn,
1119                                                      &ncacn_conn->session_info);
1120                 if (!NT_STATUS_IS_OK(status)) {
1121                         DEBUG(2, ("Failed to create "
1122                                   "auth_anonymous_session_info - %s\n",
1123                                   nt_errstr(status)));
1124                         talloc_free(ncacn_conn);
1125                         return;
1126                 }
1127         }
1128
1129         rc = make_server_pipes_struct(ncacn_conn,
1130                                       ncacn_conn->msg_ctx,
1131                                       pipe_name,
1132                                       ncacn_conn->transport,
1133                                       system_user,
1134                                       ncacn_conn->server,
1135                                       ncacn_conn->client,
1136                                       ncacn_conn->session_info,
1137                                       &ncacn_conn->p,
1138                                       &sys_errno);
1139         if (rc < 0) {
1140                 DEBUG(2, ("Failed to create pipe struct - %s",
1141                           strerror(sys_errno)));
1142                 talloc_free(ncacn_conn);
1143                 return;
1144         }
1145
1146         ncacn_conn->send_queue = tevent_queue_create(ncacn_conn,
1147                                                         "dcerpc send queue");
1148         if (ncacn_conn->send_queue == NULL) {
1149                 DEBUG(0, ("Out of memory!\n"));
1150                 talloc_free(ncacn_conn);
1151                 return;
1152         }
1153
1154         subreq = dcerpc_read_ncacn_packet_send(ncacn_conn,
1155                                                ncacn_conn->ev_ctx,
1156                                                ncacn_conn->tstream);
1157         if (subreq == NULL) {
1158                 DEBUG(2, ("Failed to send ncacn packet\n"));
1159                 talloc_free(ncacn_conn);
1160                 return;
1161         }
1162
1163         tevent_req_set_callback(subreq, dcerpc_ncacn_packet_process, ncacn_conn);
1164
1165         DEBUG(10, ("dcerpc_ncacn_accept done\n"));
1166
1167         return;
1168 }
1169
1170 static void dcerpc_ncacn_packet_process(struct tevent_req *subreq)
1171 {
1172         struct dcerpc_ncacn_conn *ncacn_conn =
1173                 tevent_req_callback_data(subreq, struct dcerpc_ncacn_conn);
1174
1175         struct _output_data *out = &ncacn_conn->p->out_data;
1176         DATA_BLOB recv_buffer = data_blob_null;
1177         struct ncacn_packet *pkt;
1178         ssize_t data_left;
1179         ssize_t data_used;
1180         uint32_t to_send;
1181         char *data;
1182         NTSTATUS status;
1183         bool ok;
1184
1185         status = dcerpc_read_ncacn_packet_recv(subreq, ncacn_conn, &pkt, &recv_buffer);
1186         TALLOC_FREE(subreq);
1187         if (!NT_STATUS_IS_OK(status)) {
1188                 if (ncacn_conn->disconnect_fn != NULL) {
1189                         ok = ncacn_conn->disconnect_fn(ncacn_conn->p);
1190                         if (!ok) {
1191                                 DEBUG(3, ("Failed to call disconnect function\n"));
1192                         }
1193                 }
1194                 goto fail;
1195         }
1196
1197         data_left = recv_buffer.length;
1198         data = (char *) recv_buffer.data;
1199
1200         while (data_left) {
1201                 data_used = process_incoming_data(ncacn_conn->p, data, data_left);
1202                 if (data_used < 0) {
1203                         DEBUG(3, ("Failed to process dcerpc request!\n"));
1204                         status = NT_STATUS_UNEXPECTED_IO_ERROR;
1205                         goto fail;
1206                 }
1207
1208                 data_left -= data_used;
1209                 data += data_used;
1210         }
1211
1212         /* Do not leak this buffer */
1213         talloc_free(recv_buffer.data);
1214         talloc_free(pkt);
1215
1216         /*
1217          * This is needed because of the way DCERPC binds work in the RPC
1218          * marshalling code
1219          */
1220         to_send = out->frag.length - out->current_pdu_sent;
1221         if (to_send > 0) {
1222
1223                 DEBUG(10, ("Current_pdu_len = %u, "
1224                            "current_pdu_sent = %u "
1225                            "Returning %u bytes\n",
1226                            (unsigned int)out->frag.length,
1227                            (unsigned int)out->current_pdu_sent,
1228                            (unsigned int)to_send));
1229
1230                 ncacn_conn->iov = talloc_zero(ncacn_conn, struct iovec);
1231                 if (ncacn_conn->iov == NULL) {
1232                         status = NT_STATUS_NO_MEMORY;
1233                         DEBUG(3, ("Out of memory!\n"));
1234                         goto fail;
1235                 }
1236                 ncacn_conn->count = 1;
1237
1238                 ncacn_conn->iov[0].iov_base = out->frag.data
1239                                             + out->current_pdu_sent;
1240                 ncacn_conn->iov[0].iov_len = to_send;
1241
1242                 out->current_pdu_sent += to_send;
1243         }
1244
1245         /*
1246          * This condition is false for bind packets, or when we haven't yet got
1247          * a full request, and need to wait for more data from the client
1248          */
1249         while (out->data_sent_length < out->rdata.length) {
1250                 ok = create_next_pdu(ncacn_conn->p);
1251                 if (!ok) {
1252                         DEBUG(3, ("Failed to create next PDU!\n"));
1253                         status = NT_STATUS_UNEXPECTED_IO_ERROR;
1254                         goto fail;
1255                 }
1256
1257                 ncacn_conn->iov = talloc_realloc(ncacn_conn,
1258                                                  ncacn_conn->iov,
1259                                                  struct iovec,
1260                                                  ncacn_conn->count + 1);
1261                 if (ncacn_conn->iov == NULL) {
1262                         DEBUG(3, ("Out of memory!\n"));
1263                         status = NT_STATUS_NO_MEMORY;
1264                         goto fail;
1265                 }
1266
1267                 ncacn_conn->iov[ncacn_conn->count].iov_base = out->frag.data;
1268                 ncacn_conn->iov[ncacn_conn->count].iov_len = out->frag.length;
1269
1270                 DEBUG(10, ("PDU number: %d, PDU Length: %u\n",
1271                            (unsigned int) ncacn_conn->count,
1272                            (unsigned int) ncacn_conn->iov[ncacn_conn->count].iov_len));
1273                 dump_data(11, (const uint8_t *) ncacn_conn->iov[ncacn_conn->count].iov_base,
1274                               ncacn_conn->iov[ncacn_conn->count].iov_len);
1275                 ncacn_conn->count++;
1276         }
1277
1278         /*
1279          * We still don't have a complete request, go back and wait for more
1280          * data.
1281          */
1282         if (ncacn_conn->count == 0) {
1283                 /* Wait for the next packet */
1284                 subreq = dcerpc_read_ncacn_packet_send(ncacn_conn,
1285                                                        ncacn_conn->ev_ctx,
1286                                                        ncacn_conn->tstream);
1287                 if (subreq == NULL) {
1288                         DEBUG(2, ("Failed to start receving packets\n"));
1289                         status = NT_STATUS_NO_MEMORY;
1290                         goto fail;
1291                 }
1292                 tevent_req_set_callback(subreq, dcerpc_ncacn_packet_process, ncacn_conn);
1293                 return;
1294         }
1295
1296         DEBUG(10, ("Sending a total of %u bytes\n",
1297                    (unsigned int)ncacn_conn->p->out_data.data_sent_length));
1298
1299         subreq = tstream_writev_queue_send(ncacn_conn,
1300                                            ncacn_conn->ev_ctx,
1301                                            ncacn_conn->tstream,
1302                                            ncacn_conn->send_queue,
1303                                            ncacn_conn->iov,
1304                                            ncacn_conn->count);
1305         if (subreq == NULL) {
1306                 DEBUG(2, ("Failed to send packet\n"));
1307                 status = NT_STATUS_NO_MEMORY;
1308                 goto fail;
1309         }
1310
1311         tevent_req_set_callback(subreq, dcerpc_ncacn_packet_done, ncacn_conn);
1312         return;
1313
1314 fail:
1315         DEBUG(3, ("Terminating client(%s) connection! - '%s'\n",
1316                   ncacn_conn->client_name, nt_errstr(status)));
1317
1318         /* Terminate client connection */
1319         talloc_free(ncacn_conn);
1320         return;
1321 }
1322
1323 static void dcerpc_ncacn_packet_done(struct tevent_req *subreq)
1324 {
1325         struct dcerpc_ncacn_conn *ncacn_conn =
1326                 tevent_req_callback_data(subreq, struct dcerpc_ncacn_conn);
1327         NTSTATUS status = NT_STATUS_OK;
1328         int sys_errno;
1329         int rc;
1330
1331         rc = tstream_writev_queue_recv(subreq, &sys_errno);
1332         TALLOC_FREE(subreq);
1333         if (rc < 0) {
1334                 DEBUG(2, ("Writev failed!\n"));
1335                 status = map_nt_error_from_unix(sys_errno);
1336                 goto fail;
1337         }
1338
1339         /* clear out any data that may have been left around */
1340         ncacn_conn->count = 0;
1341         TALLOC_FREE(ncacn_conn->iov);
1342         data_blob_free(&ncacn_conn->p->in_data.data);
1343         data_blob_free(&ncacn_conn->p->out_data.frag);
1344         data_blob_free(&ncacn_conn->p->out_data.rdata);
1345
1346         talloc_free_children(ncacn_conn->p->mem_ctx);
1347
1348         /* Wait for the next packet */
1349         subreq = dcerpc_read_ncacn_packet_send(ncacn_conn,
1350                                                ncacn_conn->ev_ctx,
1351                                                ncacn_conn->tstream);
1352         if (subreq == NULL) {
1353                 DEBUG(2, ("Failed to start receving packets\n"));
1354                 status = NT_STATUS_NO_MEMORY;
1355                 goto fail;
1356         }
1357
1358         tevent_req_set_callback(subreq, dcerpc_ncacn_packet_process, ncacn_conn);
1359         return;
1360
1361 fail:
1362         DEBUG(3, ("Terminating client(%s) connection! - '%s'\n",
1363                   ncacn_conn->client_name, nt_errstr(status)));
1364
1365         /* Terminate client connection */
1366         talloc_free(ncacn_conn);
1367         return;
1368 }
1369
1370 /* vim: set ts=8 sw=8 noet cindent syntax=c.doxygen: */