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
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21 #include "rpc_server/rpc_server.h"
  22 #include "rpc_dce.h"
  23 #include "librpc/gen_ndr/netlogon.h"
  24 #include "librpc/gen_ndr/auth.h"
  25 #include "lib/tsocket/tsocket.h"
  26 #include "libcli/named_pipe_auth/npa_tstream.h"
  27 #include "../auth/auth_sam_reply.h"
  28 #include "auth.h"
  29 #include "ntdomain.h"
  30
  31 #define SERVER_TCP_LOW_PORT  1024
  32 #define SERVER_TCP_HIGH_PORT 1300
  33
  34 static NTSTATUS auth_anonymous_session_info(TALLOC_CTX *mem_ctx,
  35                                             struct auth_session_info_transport **session_info)
  36 {
  37         struct auth_session_info_transport *i;
  38         struct auth_serversupplied_info *s;
  39         struct auth_user_info_dc *u;
  40         union netr_Validation val;
  41         NTSTATUS status;
  42
  43         i = talloc_zero(mem_ctx, struct auth_session_info_transport);
  44         if (i == NULL) {
  45                 return NT_STATUS_NO_MEMORY;
  46         }
  47
  48         status = make_server_info_guest(i, &s);
  49         if (!NT_STATUS_IS_OK(status)) {
  50                 return status;
  51         }
  52
  53         i->security_token = s->security_token;
  54         i->session_key    = s->session_key;
  55
  56         val.sam3 = s->info3;
  57
  58         status = make_user_info_dc_netlogon_validation(mem_ctx,
  59                                                        "",
  60                                                        3,
  61                                                        &val,
  62                                                        &u);
  63         if (!NT_STATUS_IS_OK(status)) {
  64                 DEBUG(0, ("conversion of info3 into user_info_dc failed!\n"));
  65                 return status;
  66         }
  67         i->info = talloc_move(i, &u->info);
  68         talloc_free(u);
  69
  70         *session_info = i;
  71
  72         return NT_STATUS_OK;
  73 }
  74
  75 /* Creates a pipes_struct and initializes it with the information
  76  * sent from the client */
  77 static int make_server_pipes_struct(TALLOC_CTX *mem_ctx,
  78                                     const char *pipe_name,
  79                                     const struct ndr_syntax_id id,
  80                                     enum dcerpc_transport_t transport,
  81                                     bool ncalrpc_as_system,
  82                                     const char *client_address,
  83                                     const char *server_address,
  84                                     struct auth_session_info_transport *session_info,
  85                                     struct pipes_struct **_p,
  86                                     int *perrno)
  87 {
  88         struct netr_SamInfo3 *info3;
  89         struct auth_user_info_dc *auth_user_info_dc;
  90         struct pipes_struct *p;
  91         struct auth_serversupplied_info *server_info;
  92         NTSTATUS status;
  93         bool ok;
  94
  95         p = talloc_zero(mem_ctx, struct pipes_struct);
  96         if (!p) {
  97                 *perrno = ENOMEM;
  98                 return -1;
  99         }
 100         p->syntax = id;
 101         p->transport = transport;
 102         p->ncalrpc_as_system = ncalrpc_as_system;
 103
 104         p->mem_ctx = talloc_named(p, 0, "pipe %s %p", pipe_name, p);
 105         if (!p->mem_ctx) {
 106                 TALLOC_FREE(p);
 107                 *perrno = ENOMEM;
 108                 return -1;
 109         }
 110
 111         ok = init_pipe_handles(p, &id);
 112         if (!ok) {
 113                 DEBUG(1, ("Failed to init handles\n"));
 114                 TALLOC_FREE(p);
 115                 *perrno = EINVAL;
 116                 return -1;
 117         }
 118
 119
 120         data_blob_free(&p->in_data.data);
 121         data_blob_free(&p->in_data.pdu);
 122
 123         p->endian = RPC_LITTLE_ENDIAN;
 124
 125         /* Fake up an auth_user_info_dc for now, to make an info3, to make the session_info structure */
 126         auth_user_info_dc = talloc_zero(p, struct auth_user_info_dc);
 127         if (!auth_user_info_dc) {
 128                 TALLOC_FREE(p);
 129                 *perrno = ENOMEM;
 130                 return -1;
 131         }
 132
 133         auth_user_info_dc->num_sids = session_info->security_token->num_sids;
 134         auth_user_info_dc->sids = session_info->security_token->sids;
 135         auth_user_info_dc->info = session_info->info;
 136         auth_user_info_dc->user_session_key = session_info->session_key;
 137
 138         /* This creates the input structure that make_server_info_info3 is looking for */
 139         status = auth_convert_user_info_dc_saminfo3(p, auth_user_info_dc,
 140                                                     &info3);
 141
 142         if (!NT_STATUS_IS_OK(status)) {
 143                 DEBUG(1, ("Failed to convert auth_user_info_dc into netr_SamInfo3\n"));
 144                 TALLOC_FREE(p);
 145                 *perrno = EINVAL;
 146                 return -1;
 147         }
 148
 149         status = make_server_info_info3(p,
 150                                         info3->base.account_name.string,
 151                                         info3->base.domain.string,
 152                                         &server_info, info3);
 153         if (!NT_STATUS_IS_OK(status)) {
 154                 DEBUG(1, ("Failed to init server info\n"));
 155                 TALLOC_FREE(p);
 156                 *perrno = EINVAL;
 157                 return -1;
 158         }
 159
 160         /*
 161          * Some internal functions need a local token to determine access to
 162          * resoutrces.
 163          */
 164         status = create_local_token(p, server_info, &session_info->session_key, &p->session_info);
 165         talloc_free(server_info);
 166         if (!NT_STATUS_IS_OK(status)) {
 167                 DEBUG(1, ("Failed to init local auth token\n"));
 168                 TALLOC_FREE(p);
 169                 *perrno = EINVAL;
 170                 return -1;
 171         }
 172
 173         /* Now override the session_info->security_token with the exact
 174          * security_token we were given from the other side,
 175          * regardless of what we just calculated */
 176         p->session_info->security_token = talloc_move(p->session_info, &session_info->security_token);
 177
 178         p->client_id = talloc_zero(p, struct client_address);
 179         if (!p->client_id) {
 180                 TALLOC_FREE(p);
 181                 *perrno = ENOMEM;
 182                 return -1;
 183         }
 184         strlcpy(p->client_id->addr,
 185                 client_address, sizeof(p->client_id->addr));
 186         p->client_id->name = talloc_strdup(p->client_id, client_address);
 187         if (p->client_id->name == NULL) {
 188                 TALLOC_FREE(p);
 189                 *perrno = ENOMEM;
 190                 return -1;
 191         }
 192
 193         if (server_address != NULL) {
 194                 p->server_id = talloc_zero(p, struct client_address);
 195                 if (p->client_id == NULL) {
 196                         TALLOC_FREE(p);
 197                         *perrno = ENOMEM;
 198                         return -1;
 199                 }
 200
 201                 strlcpy(p->server_id->addr,
 202                         server_address,
 203                         sizeof(p->server_id->addr));
 204
 205                 p->server_id->name = talloc_strdup(p->server_id,
 206                                                    server_address);
 207                 if (p->server_id->name == NULL) {
 208                         TALLOC_FREE(p);
 209                         *perrno = ENOMEM;
 210                         return -1;
 211                 }
 212         }
 213
 214         talloc_set_destructor(p, close_internal_rpc_pipe_hnd);
 215
 216         *_p = p;
 217         return 0;
 218 }
 219
 220 /* Start listening on the appropriate unix socket and setup all is needed to
 221  * dispatch requests to the pipes rpc implementation */
 222
 223 struct dcerpc_ncacn_listen_state {
 224         struct ndr_syntax_id syntax_id;
 225
 226         int fd;
 227         union {
 228                 char *name;
 229                 uint16_t port;
 230         } ep;
 231
 232         struct tevent_context *ev_ctx;
 233         struct messaging_context *msg_ctx;
 234         dcerpc_ncacn_disconnect_fn disconnect_fn;
 235 };
 236
 237 static void named_pipe_listener(struct tevent_context *ev,
 238                                 struct tevent_fd *fde,
 239                                 uint16_t flags,
 240                                 void *private_data);
 241
 242 bool setup_named_pipe_socket(const char *pipe_name,
 243                              struct tevent_context *ev_ctx)
 244 {
 245         struct dcerpc_ncacn_listen_state *state;
 246         struct tevent_fd *fde;
 247         char *np_dir;
 248
 249         state = talloc(ev_ctx, struct dcerpc_ncacn_listen_state);
 250         if (!state) {
 251                 DEBUG(0, ("Out of memory\n"));
 252                 return false;
 253         }
 254         state->ep.name = talloc_strdup(state, pipe_name);
 255         if (state->ep.name == NULL) {
 256                 DEBUG(0, ("Out of memory\n"));
 257                 goto out;
 258         }
 259         state->fd = -1;
 260
 261         np_dir = talloc_asprintf(state, "%s/np", lp_ncalrpc_dir());
 262         if (!np_dir) {
 263                 DEBUG(0, ("Out of memory\n"));
 264                 goto out;
 265         }
 266
 267         if (!directory_create_or_exist(np_dir, geteuid(), 0700)) {
 268                 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
 269                           np_dir, strerror(errno)));
 270                 goto out;
 271         }
 272
 273         state->fd = create_pipe_sock(np_dir, pipe_name, 0700);
 274         if (state->fd == -1) {
 275                 DEBUG(0, ("Failed to create pipe socket! [%s/%s]\n",
 276                           np_dir, pipe_name));
 277                 goto out;
 278         }
 279
 280         DEBUG(10, ("Openened pipe socket fd %d for %s\n",
 281                    state->fd, pipe_name));
 282
 283         fde = tevent_add_fd(ev_ctx,
 284                             state, state->fd, TEVENT_FD_READ,
 285                             named_pipe_listener, state);
 286         if (!fde) {
 287                 DEBUG(0, ("Failed to add event handler!\n"));
 288                 goto out;
 289         }
 290
 291         tevent_fd_set_auto_close(fde);
 292         return true;
 293
 294 out:
 295         if (state->fd != -1) {
 296                 close(state->fd);
 297         }
 298         TALLOC_FREE(state);
 299         return false;
 300 }
 301
 302 static void named_pipe_accept_function(const char *pipe_name, int fd);
 303
 304 static void named_pipe_listener(struct tevent_context *ev,
 305                                 struct tevent_fd *fde,
 306                                 uint16_t flags,
 307                                 void *private_data)
 308 {
 309         struct dcerpc_ncacn_listen_state *state =
 310                         talloc_get_type_abort(private_data,
 311                                               struct dcerpc_ncacn_listen_state);
 312         struct sockaddr_un sunaddr;
 313         socklen_t len;
 314         int sd = -1;
 315
 316         /* TODO: should we have a limit to the number of clients ? */
 317
 318         len = sizeof(sunaddr);
 319
 320         sd = accept(state->fd,
 321                     (struct sockaddr *)(void *)&sunaddr, &len);
 322
 323         if (sd == -1) {
 324                 if (errno != EINTR) {
 325                         DEBUG(6, ("Failed to get a valid socket [%s]\n",
 326                                   strerror(errno)));
 327                 }
 328                 return;
 329         }
 330
 331         DEBUG(6, ("Accepted socket %d\n", sd));
 332
 333         named_pipe_accept_function(state->ep.name, sd);
 334 }
 335
 336
 337 /* This is the core of the rpc server.
 338  * Accepts connections from clients and process requests using the appropriate
 339  * dispatcher table. */
 340
 341 struct named_pipe_client {
 342         const char *pipe_name;
 343         struct ndr_syntax_id pipe_id;
 344
 345         struct tevent_context *ev;
 346         struct messaging_context *msg_ctx;
 347
 348         uint16_t file_type;
 349         uint16_t device_state;
 350         uint64_t allocation_size;
 351
 352         struct tstream_context *tstream;
 353
 354         struct tsocket_address *client;
 355         char *client_name;
 356         struct tsocket_address *server;
 357         char *server_name;
 358         struct auth_session_info_transport *session_info;
 359
 360         struct pipes_struct *p;
 361
 362         struct tevent_queue *write_queue;
 363
 364         struct iovec *iov;
 365         size_t count;
 366 };
 367
 368 static void named_pipe_accept_done(struct tevent_req *subreq);
 369
 370 static void named_pipe_accept_function(const char *pipe_name, int fd)
 371 {
 372         struct ndr_syntax_id syntax;
 373         struct named_pipe_client *npc;
 374         struct tstream_context *plain;
 375         struct tevent_req *subreq;
 376         bool ok;
 377         int ret;
 378
 379         ok = is_known_pipename(pipe_name, &syntax);
 380         if (!ok) {
 381                 DEBUG(1, ("Unknown pipe [%s]\n", pipe_name));
 382                 close(fd);
 383                 return;
 384         }
 385
 386         npc = talloc_zero(NULL, struct named_pipe_client);
 387         if (!npc) {
 388                 DEBUG(0, ("Out of memory!\n"));
 389                 close(fd);
 390                 return;
 391         }
 392         npc->pipe_name = pipe_name;
 393         npc->pipe_id = syntax;
 394         npc->ev = server_event_context();
 395         npc->msg_ctx = server_messaging_context();
 396
 397         /* make sure socket is in NON blocking state */
 398         ret = set_blocking(fd, false);
 399         if (ret != 0) {
 400                 DEBUG(2, ("Failed to make socket non-blocking\n"));
 401                 TALLOC_FREE(npc);
 402                 close(fd);
 403                 return;
 404         }
 405
 406         ret = tstream_bsd_existing_socket(npc, fd, &plain);
 407         if (ret != 0) {
 408                 DEBUG(2, ("Failed to create tstream socket\n"));
 409                 TALLOC_FREE(npc);
 410                 close(fd);
 411                 return;
 412         }
 413
 414         npc->file_type = FILE_TYPE_MESSAGE_MODE_PIPE;
 415         npc->device_state = 0xff | 0x0400 | 0x0100;
 416         npc->allocation_size = 4096;
 417
 418         subreq = tstream_npa_accept_existing_send(npc, npc->ev, plain,
 419                                                   npc->file_type,
 420                                                   npc->device_state,
 421                                                   npc->allocation_size);
 422         if (!subreq) {
 423                 DEBUG(2, ("Failed to start async accept procedure\n"));
 424                 TALLOC_FREE(npc);
 425                 close(fd);
 426                 return;
 427         }
 428         tevent_req_set_callback(subreq, named_pipe_accept_done, npc);
 429 }
 430
 431 static void named_pipe_packet_process(struct tevent_req *subreq);
 432 static void named_pipe_packet_done(struct tevent_req *subreq);
 433
 434 static void named_pipe_accept_done(struct tevent_req *subreq)
 435 {
 436         struct named_pipe_client *npc =
 437                 tevent_req_callback_data(subreq, struct named_pipe_client);
 438         const char *cli_addr;
 439         int error;
 440         int ret;
 441
 442         ret = tstream_npa_accept_existing_recv(subreq, &error, npc,
 443                                                 &npc->tstream,
 444                                                 &npc->client,
 445                                                 &npc->client_name,
 446                                                 &npc->server,
 447                                                 &npc->server_name,
 448                                                 &npc->session_info);
 449         TALLOC_FREE(subreq);
 450         if (ret != 0) {
 451                 DEBUG(2, ("Failed to accept named pipe connection! (%s)\n",
 452                           strerror(error)));
 453                 TALLOC_FREE(npc);
 454                 return;
 455         }
 456
 457         if (tsocket_address_is_inet(npc->client, "ip")) {
 458                 cli_addr = tsocket_address_inet_addr_string(npc->client,
 459                                                             subreq);
 460                 if (cli_addr == NULL) {
 461                         TALLOC_FREE(npc);
 462                         return;
 463                 }
 464         } else {
 465                 cli_addr = "";
 466         }
 467
 468         ret = make_server_pipes_struct(npc,
 469                                         npc->pipe_name, npc->pipe_id, NCACN_NP,
 470                                         false, cli_addr, NULL, npc->session_info,
 471                                         &npc->p, &error);
 472         if (ret != 0) {
 473                 DEBUG(2, ("Failed to create pipes_struct! (%s)\n",
 474                           strerror(error)));
 475                 goto fail;
 476         }
 477         npc->p->msg_ctx = npc->msg_ctx;
 478
 479         npc->write_queue = tevent_queue_create(npc, "np_server_write_queue");
 480         if (!npc->write_queue) {
 481                 DEBUG(2, ("Failed to set up write queue!\n"));
 482                 goto fail;
 483         }
 484
 485         /* And now start receiving and processing packets */
 486         subreq = dcerpc_read_ncacn_packet_send(npc, npc->ev, npc->tstream);
 487         if (!subreq) {
 488                 DEBUG(2, ("Failed to start receving packets\n"));
 489                 goto fail;
 490         }
 491         tevent_req_set_callback(subreq, named_pipe_packet_process, npc);
 492         return;
 493
 494 fail:
 495         DEBUG(2, ("Fatal error. Terminating client(%s) connection!\n",
 496                   npc->client_name));
 497         /* terminate client connection */
 498         talloc_free(npc);
 499         return;
 500 }
 501
 502 static void named_pipe_packet_process(struct tevent_req *subreq)
 503 {
 504         struct named_pipe_client *npc =
 505                 tevent_req_callback_data(subreq, struct named_pipe_client);
 506         struct _output_data *out = &npc->p->out_data;
 507         DATA_BLOB recv_buffer = data_blob_null;
 508         struct ncacn_packet *pkt;
 509         NTSTATUS status;
 510         ssize_t data_left;
 511         ssize_t data_used;
 512         char *data;
 513         uint32_t to_send;
 514         bool ok;
 515
 516         status = dcerpc_read_ncacn_packet_recv(subreq, npc, &pkt, &recv_buffer);
 517         TALLOC_FREE(subreq);
 518         if (!NT_STATUS_IS_OK(status)) {
 519                 goto fail;
 520         }
 521
 522         data_left = recv_buffer.length;
 523         data = (char *)recv_buffer.data;
 524
 525         while (data_left) {
 526
 527                 data_used = process_incoming_data(npc->p, data, data_left);
 528                 if (data_used < 0) {
 529                         DEBUG(3, ("Failed to process dceprc request!\n"));
 530                         status = NT_STATUS_UNEXPECTED_IO_ERROR;
 531                         goto fail;
 532                 }
 533
 534                 data_left -= data_used;
 535                 data += data_used;
 536         }
 537
 538         /* Do not leak this buffer, npc is a long lived context */
 539         talloc_free(recv_buffer.data);
 540         talloc_free(pkt);
 541
 542         /* this is needed because of the way DCERPC Binds work in
 543          * the RPC marshalling code */
 544         to_send = out->frag.length - out->current_pdu_sent;
 545         if (to_send > 0) {
 546
 547                 DEBUG(10, ("Current_pdu_len = %u, "
 548                            "current_pdu_sent = %u "
 549                            "Returning %u bytes\n",
 550                            (unsigned int)out->frag.length,
 551                            (unsigned int)out->current_pdu_sent,
 552                            (unsigned int)to_send));
 553
 554                 npc->iov = talloc_zero(npc, struct iovec);
 555                 if (!npc->iov) {
 556                         status = NT_STATUS_NO_MEMORY;
 557                         goto fail;
 558                 }
 559                 npc->count = 1;
 560
 561                 npc->iov[0].iov_base = out->frag.data
 562                                         + out->current_pdu_sent;
 563                 npc->iov[0].iov_len = to_send;
 564
 565                 out->current_pdu_sent += to_send;
 566         }
 567
 568         /* this condition is false for bind packets, or when we haven't
 569          * yet got a full request, and need to wait for more data from
 570          * the client */
 571         while (out->data_sent_length < out->rdata.length) {
 572
 573                 ok = create_next_pdu(npc->p);
 574                 if (!ok) {
 575                         DEBUG(3, ("Failed to create next PDU!\n"));
 576                         status = NT_STATUS_UNEXPECTED_IO_ERROR;
 577                         goto fail;
 578                 }
 579
 580                 npc->iov = talloc_realloc(npc, npc->iov,
 581                                             struct iovec, npc->count + 1);
 582                 if (!npc->iov) {
 583                         status = NT_STATUS_NO_MEMORY;
 584                         goto fail;
 585                 }
 586
 587                 npc->iov[npc->count].iov_base = out->frag.data;
 588                 npc->iov[npc->count].iov_len = out->frag.length;
 589
 590                 DEBUG(10, ("PDU number: %d, PDU Length: %u\n",
 591                            (unsigned int)npc->count,
 592                            (unsigned int)npc->iov[npc->count].iov_len));
 593                 dump_data(11, (const uint8_t *)npc->iov[npc->count].iov_base,
 594                                 npc->iov[npc->count].iov_len);
 595                 npc->count++;
 596         }
 597
 598         /* we still don't have a complete request, go back and wait for more
 599          * data */
 600         if (npc->count == 0) {
 601                 /* Wait for the next packet */
 602                 subreq = dcerpc_read_ncacn_packet_send(npc, npc->ev, npc->tstream);
 603                 if (!subreq) {
 604                         DEBUG(2, ("Failed to start receving packets\n"));
 605                         status = NT_STATUS_NO_MEMORY;
 606                         goto fail;
 607                 }
 608                 tevent_req_set_callback(subreq, named_pipe_packet_process, npc);
 609                 return;
 610         }
 611
 612         DEBUG(10, ("Sending a total of %u bytes\n",
 613                    (unsigned int)npc->p->out_data.data_sent_length));
 614
 615         subreq = tstream_writev_queue_send(npc, npc->ev,
 616                                            npc->tstream,
 617                                            npc->write_queue,
 618                                            npc->iov, npc->count);
 619         if (!subreq) {
 620                 DEBUG(2, ("Failed to send packet\n"));
 621                 status = NT_STATUS_NO_MEMORY;
 622                 goto fail;
 623         }
 624         tevent_req_set_callback(subreq, named_pipe_packet_done, npc);
 625         return;
 626
 627 fail:
 628         DEBUG(2, ("Fatal error(%s). "
 629                   "Terminating client(%s) connection!\n",
 630                   nt_errstr(status), npc->client_name));
 631         /* terminate client connection */
 632         talloc_free(npc);
 633         return;
 634 }
 635
 636 static void named_pipe_packet_done(struct tevent_req *subreq)
 637 {
 638         struct named_pipe_client *npc =
 639                 tevent_req_callback_data(subreq, struct named_pipe_client);
 640         int sys_errno;
 641         int ret;
 642
 643         ret = tstream_writev_queue_recv(subreq, &sys_errno);
 644         TALLOC_FREE(subreq);
 645         if (ret == -1) {
 646                 DEBUG(2, ("Writev failed!\n"));
 647                 goto fail;
 648         }
 649
 650         /* clear out any data that may have been left around */
 651         npc->count = 0;
 652         TALLOC_FREE(npc->iov);
 653         data_blob_free(&npc->p->in_data.data);
 654         data_blob_free(&npc->p->out_data.frag);
 655         data_blob_free(&npc->p->out_data.rdata);
 656
 657         /* Wait for the next packet */
 658         subreq = dcerpc_read_ncacn_packet_send(npc, npc->ev, npc->tstream);
 659         if (!subreq) {
 660                 DEBUG(2, ("Failed to start receving packets\n"));
 661                 sys_errno = ENOMEM;
 662                 goto fail;
 663         }
 664         tevent_req_set_callback(subreq, named_pipe_packet_process, npc);
 665         return;
 666
 667 fail:
 668         DEBUG(2, ("Fatal error(%s). "
 669                   "Terminating client(%s) connection!\n",
 670                   strerror(sys_errno), npc->client_name));
 671         /* terminate client connection */
 672         talloc_free(npc);
 673         return;
 674 }
 675
 676 static void dcerpc_ncacn_accept(struct tevent_context *ev_ctx,
 677                                 struct messaging_context *msg_ctx,
 678                                 struct ndr_syntax_id syntax_id,
 679                                 enum dcerpc_transport_t transport,
 680                                 const char *name,
 681                                 uint16_t port,
 682                                 struct tsocket_address *cli_addr,
 683                                 struct tsocket_address *srv_addr,
 684                                 int s,
 685                                 dcerpc_ncacn_disconnect_fn fn);
 686
 687 /********************************************************************
 688  * Start listening on the tcp/ip socket
 689  ********************************************************************/
 690
 691 static void dcerpc_ncacn_tcpip_listener(struct tevent_context *ev,
 692                                         struct tevent_fd *fde,
 693                                         uint16_t flags,
 694                                         void *private_data);
 695
 696 uint16_t setup_dcerpc_ncacn_tcpip_socket(struct tevent_context *ev_ctx,
 697                                          struct messaging_context *msg_ctx,
 698                                          struct ndr_syntax_id syntax_id,
 699                                          const struct sockaddr_storage *ifss,
 700                                          uint16_t port)
 701 {
 702         struct dcerpc_ncacn_listen_state *state;
 703         struct tevent_fd *fde;
 704         int rc;
 705
 706         state = talloc(ev_ctx, struct dcerpc_ncacn_listen_state);
 707         if (state == NULL) {
 708                 DEBUG(0, ("setup_dcerpc_ncacn_tcpip_socket: Out of memory\n"));
 709                 return 0;
 710         }
 711
 712         state->syntax_id = syntax_id;
 713         state->fd = -1;
 714         state->ep.port = port;
 715         state->disconnect_fn = NULL;
 716
 717         if (state->ep.port == 0) {
 718                 uint16_t i;
 719
 720                 for (i = SERVER_TCP_LOW_PORT; i <= SERVER_TCP_HIGH_PORT; i++) {
 721                         state->fd = open_socket_in(SOCK_STREAM,
 722                                                    i,
 723                                                    0,
 724                                                    ifss,
 725                                                    false);
 726                         if (state->fd > 0) {
 727                                 state->ep.port = i;
 728                                 break;
 729                         }
 730                 }
 731         } else {
 732                 state->fd = open_socket_in(SOCK_STREAM,
 733                                            state->ep.port,
 734                                            0,
 735                                            ifss,
 736                                            true);
 737         }
 738         if (state->fd == -1) {
 739                 DEBUG(0, ("setup_dcerpc_ncacn_tcpip_socket: Failed to create "
 740                           "socket on port %u!\n", state->ep.port));
 741                 goto out;
 742         }
 743
 744         state->ev_ctx = ev_ctx;
 745         state->msg_ctx = msg_ctx;
 746
 747         /* ready to listen */
 748         set_socket_options(state->fd, "SO_KEEPALIVE");
 749         set_socket_options(state->fd, lp_socket_options());
 750
 751         /* Set server socket to non-blocking for the accept. */
 752         set_blocking(state->fd, false);
 753
 754         rc = listen(state->fd, SMBD_LISTEN_BACKLOG);
 755         if (rc == -1) {
 756                 DEBUG(0,("setup_tcpip_socket: listen - %s\n", strerror(errno)));
 757                 goto out;
 758         }
 759
 760         DEBUG(10, ("setup_tcpip_socket: openened socket fd %d for port %u\n",
 761                    state->fd, state->ep.port));
 762
 763         fde = tevent_add_fd(state->ev_ctx,
 764                             state,
 765                             state->fd,
 766                             TEVENT_FD_READ,
 767                             dcerpc_ncacn_tcpip_listener,
 768                             state);
 769         if (fde == NULL) {
 770                 DEBUG(0, ("setup_tcpip_socket: Failed to add event handler!\n"));
 771                 goto out;
 772         }
 773
 774         tevent_fd_set_auto_close(fde);
 775
 776         return state->ep.port;
 777 out:
 778         if (state->fd != -1) {
 779                 close(state->fd);
 780         }
 781         TALLOC_FREE(state);
 782
 783         return 0;
 784 }
 785
 786 static void dcerpc_ncacn_tcpip_listener(struct tevent_context *ev,
 787                                         struct tevent_fd *fde,
 788                                         uint16_t flags,
 789                                         void *private_data)
 790 {
 791         struct dcerpc_ncacn_listen_state *state =
 792                         talloc_get_type_abort(private_data,
 793                                               struct dcerpc_ncacn_listen_state);
 794         struct tsocket_address *cli_addr = NULL;
 795         struct tsocket_address *srv_addr = NULL;
 796         struct sockaddr_storage addr;
 797         socklen_t in_addrlen = sizeof(addr);
 798         int s = -1;
 799         int rc;
 800
 801         s = accept(state->fd, (struct sockaddr *)(void *) &addr, &in_addrlen);
 802         if (s == -1) {
 803                 if (errno != EINTR) {
 804                         DEBUG(0,("tcpip_listener accept: %s\n",
 805                                  strerror(errno)));
 806                 }
 807                 return;
 808         }
 809
 810         rc = tsocket_address_bsd_from_sockaddr(state,
 811                                                (struct sockaddr *)(void *) &addr,
 812                                                in_addrlen,
 813                                                &cli_addr);
 814         if (rc < 0) {
 815                 close(s);
 816                 return;
 817         }
 818
 819         rc = getsockname(s, (struct sockaddr *)(void *) &addr, &in_addrlen);
 820         if (rc < 0) {
 821                 close(s);
 822                 return;
 823         }
 824
 825         rc = tsocket_address_bsd_from_sockaddr(state,
 826                                                (struct sockaddr *)(void *) &addr,
 827                                                in_addrlen,
 828                                                &srv_addr);
 829         if (rc < 0) {
 830                 close(s);
 831                 return;
 832         }
 833
 834         DEBUG(6, ("tcpip_listener: Accepted socket %d\n", s));
 835
 836         dcerpc_ncacn_accept(state->ev_ctx,
 837                             state->msg_ctx,
 838                             state->syntax_id,
 839                             NCACN_IP_TCP,
 840                             NULL,
 841                             state->ep.port,
 842                             cli_addr,
 843                             srv_addr,
 844                             s,
 845                             NULL);
 846 }
 847
 848 /********************************************************************
 849  * Start listening on the ncalrpc socket
 850  ********************************************************************/
 851
 852 static void dcerpc_ncalrpc_listener(struct tevent_context *ev,
 853                                     struct tevent_fd *fde,
 854                                     uint16_t flags,
 855                                     void *private_data);
 856
 857 bool setup_dcerpc_ncalrpc_socket(struct tevent_context *ev_ctx,
 858                                  struct messaging_context *msg_ctx,
 859                                  struct ndr_syntax_id syntax_id,
 860                                  const char *name,
 861                                  dcerpc_ncacn_disconnect_fn fn)
 862 {
 863         struct dcerpc_ncacn_listen_state *state;
 864         struct tevent_fd *fde;
 865
 866         state = talloc(ev_ctx, struct dcerpc_ncacn_listen_state);
 867         if (state == NULL) {
 868                 DEBUG(0, ("Out of memory\n"));
 869                 return false;
 870         }
 871
 872         state->syntax_id = syntax_id;
 873         state->fd = -1;
 874         state->disconnect_fn = fn;
 875
 876         if (name == NULL) {
 877                 name = "DEFAULT";
 878         }
 879         state->ep.name = talloc_strdup(state, name);
 880
 881         if (state->ep.name == NULL) {
 882                 DEBUG(0, ("Out of memory\n"));
 883                 talloc_free(state);
 884                 return false;
 885         }
 886
 887         if (!directory_create_or_exist(lp_ncalrpc_dir(), geteuid(), 0700)) {
 888                 DEBUG(0, ("Failed to create pipe directory %s - %s\n",
 889                           lp_ncalrpc_dir(), strerror(errno)));
 890                 goto out;
 891         }
 892
 893         state->fd = create_pipe_sock(lp_ncalrpc_dir(), name, 0700);
 894         if (state->fd == -1) {
 895                 DEBUG(0, ("Failed to create pipe socket! [%s/%s]\n",
 896                           lp_ncalrpc_dir(), name));
 897                 goto out;
 898         }
 899
 900         DEBUG(10, ("Openened pipe socket fd %d for %s\n", state->fd, name));
 901
 902         state->ev_ctx = ev_ctx;
 903         state->msg_ctx = msg_ctx;
 904
 905         /* Set server socket to non-blocking for the accept. */
 906         set_blocking(state->fd, false);
 907
 908         fde = tevent_add_fd(state->ev_ctx,
 909                             state,
 910                             state->fd,
 911                             TEVENT_FD_READ,
 912                             dcerpc_ncalrpc_listener,
 913                             state);
 914         if (fde == NULL) {
 915                 DEBUG(0, ("Failed to add event handler for ncalrpc!\n"));
 916                 goto out;
 917         }
 918
 919         tevent_fd_set_auto_close(fde);
 920
 921         return true;
 922 out:
 923         if (state->fd != -1) {
 924                 close(state->fd);
 925         }
 926         TALLOC_FREE(state);
 927
 928         return 0;
 929 }
 930
 931 static void dcerpc_ncalrpc_listener(struct tevent_context *ev,
 932                                         struct tevent_fd *fde,
 933                                         uint16_t flags,
 934                                         void *private_data)
 935 {
 936         struct dcerpc_ncacn_listen_state *state =
 937                         talloc_get_type_abort(private_data,
 938                                               struct dcerpc_ncacn_listen_state);
 939         struct tsocket_address *cli_addr = NULL;
 940         struct sockaddr_un sunaddr;
 941         struct sockaddr *addr = (struct sockaddr *)(void *)&sunaddr;
 942         socklen_t len = sizeof(sunaddr);
 943         int sd = -1;
 944         int rc;
 945
 946         ZERO_STRUCT(sunaddr);
 947
 948         sd = accept(state->fd, addr, &len);
 949         if (sd == -1) {
 950                 if (errno != EINTR) {
 951                         DEBUG(0, ("ncalrpc accept() failed: %s\n", strerror(errno)));
 952                 }
 953                 return;
 954         }
 955
 956         rc = tsocket_address_bsd_from_sockaddr(state,
 957                                                addr, len,
 958                                                &cli_addr);
 959         if (rc < 0) {
 960                 close(sd);
 961                 return;
 962         }
 963
 964         DEBUG(10, ("Accepted ncalrpc socket %d\n", sd));
 965
 966         dcerpc_ncacn_accept(state->ev_ctx,
 967                             state->msg_ctx,
 968                             state->syntax_id, NCALRPC,
 969                             state->ep.name, 0,
 970                             cli_addr, NULL, sd,
 971                             state->disconnect_fn);
 972 }
 973
 974 struct dcerpc_ncacn_conn {
 975         struct ndr_syntax_id syntax_id;
 976
 977         enum dcerpc_transport_t transport;
 978
 979         union {
 980                 const char *name;
 981                 uint16_t port;
 982         } ep;
 983
 984         int sock;
 985
 986         struct pipes_struct *p;
 987         dcerpc_ncacn_disconnect_fn disconnect_fn;
 988
 989         struct tevent_context *ev_ctx;
 990         struct messaging_context *msg_ctx;
 991
 992         struct tstream_context *tstream;
 993         struct tevent_queue *send_queue;
 994
 995         struct tsocket_address *client;
 996         char *client_name;
 997         struct tsocket_address *server;
 998         char *server_name;
 999         struct auth_session_info_transport *session_info;
1000
1001         struct iovec *iov;
1002         size_t count;
1003 };
1004
1005 static void dcerpc_ncacn_packet_process(struct tevent_req *subreq);
1006 static void dcerpc_ncacn_packet_done(struct tevent_req *subreq);
1007
1008 static void dcerpc_ncacn_accept(struct tevent_context *ev_ctx,
1009                                 struct messaging_context *msg_ctx,
1010                                 struct ndr_syntax_id syntax_id,
1011                                 enum dcerpc_transport_t transport,
1012                                 const char *name,
1013                                 uint16_t port,
1014                                 struct tsocket_address *cli_addr,
1015                                 struct tsocket_address *srv_addr,
1016                                 int s,
1017                                 dcerpc_ncacn_disconnect_fn fn) {
1018         struct dcerpc_ncacn_conn *ncacn_conn;
1019         struct tevent_req *subreq;
1020         const char *cli_str;
1021         const char *srv_str = NULL;
1022         bool system_user = false;
1023         char *pipe_name;
1024         NTSTATUS status;
1025         int sys_errno;
1026         uid_t uid;
1027         int rc;
1028
1029         DEBUG(10, ("dcerpc_ncacn_accept\n"));
1030
1031         ncacn_conn = talloc_zero(ev_ctx, struct dcerpc_ncacn_conn);
1032         if (ncacn_conn == NULL) {
1033                 DEBUG(0, ("Out of memory!\n"));
1034                 close(s);
1035                 return;
1036         }
1037
1038         ncacn_conn->transport = transport;
1039         ncacn_conn->syntax_id = syntax_id;
1040         ncacn_conn->ev_ctx = ev_ctx;
1041         ncacn_conn->msg_ctx = msg_ctx;
1042         ncacn_conn->sock = s;
1043         ncacn_conn->disconnect_fn = fn;
1044
1045         ncacn_conn->client = talloc_move(ncacn_conn, &cli_addr);
1046         if (tsocket_address_is_inet(ncacn_conn->client, "ip")) {
1047                 ncacn_conn->client_name =
1048                         tsocket_address_inet_addr_string(ncacn_conn->client,
1049                                                          ncacn_conn);
1050         } else {
1051                 ncacn_conn->client_name =
1052                         tsocket_address_unix_path(ncacn_conn->client,
1053                                                   ncacn_conn);
1054         }
1055         if (ncacn_conn->client_name == NULL) {
1056                 DEBUG(0, ("Out of memory!\n"));
1057                 talloc_free(ncacn_conn);
1058                 close(s);
1059                 return;
1060         }
1061
1062         if (srv_addr != NULL) {
1063                 ncacn_conn->server = talloc_move(ncacn_conn, &srv_addr);
1064
1065                 ncacn_conn->server_name =
1066                         tsocket_address_inet_addr_string(ncacn_conn->server,
1067                                                          ncacn_conn);
1068                 if (ncacn_conn->server_name == NULL) {
1069                         DEBUG(0, ("Out of memory!\n"));
1070                         talloc_free(ncacn_conn);
1071                         close(s);
1072                         return;
1073                 }
1074         }
1075
1076         switch (transport) {
1077                 case NCACN_IP_TCP:
1078                         ncacn_conn->ep.port = port;
1079
1080                         pipe_name = tsocket_address_string(ncacn_conn->client,
1081                                                            ncacn_conn);
1082                         if (pipe_name == NULL) {
1083                                 close(s);
1084                                 talloc_free(ncacn_conn);
1085                                 return;
1086                         }
1087
1088                         break;
1089                 case NCALRPC:
1090                         rc = sys_getpeereid(s, &uid);
1091                         if (rc < 0) {
1092                                 DEBUG(2, ("Failed to get ncalrpc connecting uid!"));
1093                         } else {
1094                                 if (uid == sec_initial_uid()) {
1095                                         system_user = true;
1096                                 }
1097                         }
1098                 case NCACN_NP:
1099                         ncacn_conn->ep.name = talloc_strdup(ncacn_conn, name);
1100                         if (ncacn_conn->ep.name == NULL) {
1101                                 close(s);
1102                                 talloc_free(ncacn_conn);
1103                                 return;
1104                         }
1105
1106                         pipe_name = talloc_strdup(ncacn_conn,
1107                                                   name);
1108                         if (pipe_name == NULL) {
1109                                 close(s);
1110                                 talloc_free(ncacn_conn);
1111                                 return;
1112                         }
1113                         break;
1114                 default:
1115                         DEBUG(0, ("unknown dcerpc transport: %u!\n",
1116                                   transport));
1117                         talloc_free(ncacn_conn);
1118                         close(s);
1119                         return;
1120         }
1121
1122         rc = set_blocking(s, false);
1123         if (rc < 0) {
1124                 DEBUG(2, ("Failed to set dcerpc socket to non-blocking\n"));
1125                 talloc_free(ncacn_conn);
1126                 close(s);
1127                 return;
1128         }
1129
1130         /*
1131          * As soon as we have tstream_bsd_existing_socket set up it will
1132          * take care of closing the socket.
1133          */
1134         rc = tstream_bsd_existing_socket(ncacn_conn, s, &ncacn_conn->tstream);
1135         if (rc < 0) {
1136                 DEBUG(2, ("Failed to create tstream socket for dcerpc\n"));
1137                 talloc_free(ncacn_conn);
1138                 close(s);
1139                 return;
1140         }
1141
1142         if (tsocket_address_is_inet(ncacn_conn->client, "ip")) {
1143                 cli_str = ncacn_conn->client_name;
1144         } else {
1145                 cli_str = "";
1146         }
1147
1148         if (ncacn_conn->server != NULL) {
1149                 if (tsocket_address_is_inet(ncacn_conn->server, "ip")) {
1150                         srv_str = ncacn_conn->server_name;
1151                 } else {
1152                         srv_str = NULL;
1153                 }
1154         }
1155
1156         if (ncacn_conn->session_info == NULL) {
1157                 status = auth_anonymous_session_info(ncacn_conn,
1158                                                      &ncacn_conn->session_info);
1159                 if (!NT_STATUS_IS_OK(status)) {
1160                         DEBUG(2, ("Failed to create "
1161                                   "auth_anonymous_session_info - %s\n",
1162                                   nt_errstr(status)));
1163                         talloc_free(ncacn_conn);
1164                         return;
1165                 }
1166         }
1167
1168         rc = make_server_pipes_struct(ncacn_conn,
1169                                       pipe_name,
1170                                       ncacn_conn->syntax_id,
1171                                       ncacn_conn->transport,
1172                                       system_user,
1173                                       cli_str,
1174                                       srv_str,
1175                                       ncacn_conn->session_info,
1176                                       &ncacn_conn->p,
1177                                       &sys_errno);
1178         if (rc < 0) {
1179                 DEBUG(2, ("Failed to create pipe struct - %s",
1180                           strerror(sys_errno)));
1181                 talloc_free(ncacn_conn);
1182                 return;
1183         }
1184
1185         ncacn_conn->send_queue = tevent_queue_create(ncacn_conn,
1186                                                         "dcerpc send queue");
1187         if (ncacn_conn->send_queue == NULL) {
1188                 DEBUG(0, ("Out of memory!\n"));
1189                 talloc_free(ncacn_conn);
1190                 return;
1191         }
1192
1193         subreq = dcerpc_read_ncacn_packet_send(ncacn_conn,
1194                                                ncacn_conn->ev_ctx,
1195                                                ncacn_conn->tstream);
1196         if (subreq == NULL) {
1197                 DEBUG(2, ("Failed to send ncacn packet\n"));
1198                 talloc_free(ncacn_conn);
1199                 return;
1200         }
1201
1202         tevent_req_set_callback(subreq, dcerpc_ncacn_packet_process, ncacn_conn);
1203
1204         DEBUG(10, ("dcerpc_ncacn_accept done\n"));
1205
1206         return;
1207 }
1208
1209 static void dcerpc_ncacn_packet_process(struct tevent_req *subreq)
1210 {
1211         struct dcerpc_ncacn_conn *ncacn_conn =
1212                 tevent_req_callback_data(subreq, struct dcerpc_ncacn_conn);
1213
1214         struct _output_data *out = &ncacn_conn->p->out_data;
1215         DATA_BLOB recv_buffer = data_blob_null;
1216         struct ncacn_packet *pkt;
1217         ssize_t data_left;
1218         ssize_t data_used;
1219         uint32_t to_send;
1220         char *data;
1221         NTSTATUS status;
1222         bool ok;
1223
1224         status = dcerpc_read_ncacn_packet_recv(subreq, ncacn_conn, &pkt, &recv_buffer);
1225         TALLOC_FREE(subreq);
1226         if (!NT_STATUS_IS_OK(status)) {
1227                 if (ncacn_conn->disconnect_fn != NULL) {
1228                         ok = ncacn_conn->disconnect_fn(ncacn_conn->p);
1229                         if (!ok) {
1230                                 DEBUG(3, ("Failed to call disconnect function\n"));
1231                         }
1232                 }
1233                 goto fail;
1234         }
1235
1236         data_left = recv_buffer.length;
1237         data = (char *) recv_buffer.data;
1238
1239         while (data_left) {
1240                 data_used = process_incoming_data(ncacn_conn->p, data, data_left);
1241                 if (data_used < 0) {
1242                         DEBUG(3, ("Failed to process dcerpc request!\n"));
1243                         status = NT_STATUS_UNEXPECTED_IO_ERROR;
1244                         goto fail;
1245                 }
1246
1247                 data_left -= data_used;
1248                 data += data_used;
1249         }
1250
1251         /* Do not leak this buffer */
1252         talloc_free(recv_buffer.data);
1253         talloc_free(pkt);
1254
1255         /*
1256          * This is needed because of the way DCERPC binds work in the RPC
1257          * marshalling code
1258          */
1259         to_send = out->frag.length - out->current_pdu_sent;
1260         if (to_send > 0) {
1261
1262                 DEBUG(10, ("Current_pdu_len = %u, "
1263                            "current_pdu_sent = %u "
1264                            "Returning %u bytes\n",
1265                            (unsigned int)out->frag.length,
1266                            (unsigned int)out->current_pdu_sent,
1267                            (unsigned int)to_send));
1268
1269                 ncacn_conn->iov = talloc_zero(ncacn_conn, struct iovec);
1270                 if (ncacn_conn->iov == NULL) {
1271                         status = NT_STATUS_NO_MEMORY;
1272                         DEBUG(3, ("Out of memory!\n"));
1273                         goto fail;
1274                 }
1275                 ncacn_conn->count = 1;
1276
1277                 ncacn_conn->iov[0].iov_base = out->frag.data
1278                                             + out->current_pdu_sent;
1279                 ncacn_conn->iov[0].iov_len = to_send;
1280
1281                 out->current_pdu_sent += to_send;
1282         }
1283
1284         /*
1285          * This condition is false for bind packets, or when we haven't yet got
1286          * a full request, and need to wait for more data from the client
1287          */
1288         while (out->data_sent_length < out->rdata.length) {
1289                 ok = create_next_pdu(ncacn_conn->p);
1290                 if (!ok) {
1291                         DEBUG(3, ("Failed to create next PDU!\n"));
1292                         status = NT_STATUS_UNEXPECTED_IO_ERROR;
1293                         goto fail;
1294                 }
1295
1296                 ncacn_conn->iov = talloc_realloc(ncacn_conn,
1297                                                  ncacn_conn->iov,
1298                                                  struct iovec,
1299                                                  ncacn_conn->count + 1);
1300                 if (ncacn_conn->iov == NULL) {
1301                         DEBUG(3, ("Out of memory!\n"));
1302                         status = NT_STATUS_NO_MEMORY;
1303                         goto fail;
1304                 }
1305
1306                 ncacn_conn->iov[ncacn_conn->count].iov_base = out->frag.data;
1307                 ncacn_conn->iov[ncacn_conn->count].iov_len = out->frag.length;
1308
1309                 DEBUG(10, ("PDU number: %d, PDU Length: %u\n",
1310                            (unsigned int) ncacn_conn->count,
1311                            (unsigned int) ncacn_conn->iov[ncacn_conn->count].iov_len));
1312                 dump_data(11, (const uint8_t *) ncacn_conn->iov[ncacn_conn->count].iov_base,
1313                               ncacn_conn->iov[ncacn_conn->count].iov_len);
1314                 ncacn_conn->count++;
1315         }
1316
1317         /*
1318          * We still don't have a complete request, go back and wait for more
1319          * data.
1320          */
1321         if (ncacn_conn->count == 0) {
1322                 /* Wait for the next packet */
1323                 subreq = dcerpc_read_ncacn_packet_send(ncacn_conn,
1324                                                        ncacn_conn->ev_ctx,
1325                                                        ncacn_conn->tstream);
1326                 if (subreq == NULL) {
1327                         DEBUG(2, ("Failed to start receving packets\n"));
1328                         status = NT_STATUS_NO_MEMORY;
1329                         goto fail;
1330                 }
1331                 tevent_req_set_callback(subreq, dcerpc_ncacn_packet_process, ncacn_conn);
1332                 return;
1333         }
1334
1335         DEBUG(10, ("Sending a total of %u bytes\n",
1336                    (unsigned int)ncacn_conn->p->out_data.data_sent_length));
1337
1338         subreq = tstream_writev_queue_send(ncacn_conn,
1339                                            ncacn_conn->ev_ctx,
1340                                            ncacn_conn->tstream,
1341                                            ncacn_conn->send_queue,
1342                                            ncacn_conn->iov,
1343                                            ncacn_conn->count);
1344         if (subreq == NULL) {
1345                 DEBUG(2, ("Failed to send packet\n"));
1346                 status = NT_STATUS_NO_MEMORY;
1347                 goto fail;
1348         }
1349
1350         tevent_req_set_callback(subreq, dcerpc_ncacn_packet_done, ncacn_conn);
1351         return;
1352
1353 fail:
1354         DEBUG(3, ("Terminating client(%s) connection! - '%s'\n",
1355                   ncacn_conn->client_name, nt_errstr(status)));
1356
1357         /* Terminate client connection */
1358         talloc_free(ncacn_conn);
1359         return;
1360 }
1361
1362 static void dcerpc_ncacn_packet_done(struct tevent_req *subreq)
1363 {
1364         struct dcerpc_ncacn_conn *ncacn_conn =
1365                 tevent_req_callback_data(subreq, struct dcerpc_ncacn_conn);
1366         NTSTATUS status = NT_STATUS_OK;
1367         int sys_errno;
1368         int rc;
1369
1370         rc = tstream_writev_queue_recv(subreq, &sys_errno);
1371         TALLOC_FREE(subreq);
1372         if (rc < 0) {
1373                 DEBUG(2, ("Writev failed!\n"));
1374                 status = map_nt_error_from_unix(sys_errno);
1375                 goto fail;
1376         }
1377
1378         /* clear out any data that may have been left around */
1379         ncacn_conn->count = 0;
1380         TALLOC_FREE(ncacn_conn->iov);
1381         data_blob_free(&ncacn_conn->p->in_data.data);
1382         data_blob_free(&ncacn_conn->p->out_data.frag);
1383         data_blob_free(&ncacn_conn->p->out_data.rdata);
1384
1385         /* Wait for the next packet */
1386         subreq = dcerpc_read_ncacn_packet_send(ncacn_conn,
1387                                                ncacn_conn->ev_ctx,
1388                                                ncacn_conn->tstream);
1389         if (subreq == NULL) {
1390                 DEBUG(2, ("Failed to start receving packets\n"));
1391                 status = NT_STATUS_NO_MEMORY;
1392                 goto fail;
1393         }
1394
1395         tevent_req_set_callback(subreq, dcerpc_ncacn_packet_process, ncacn_conn);
1396         return;
1397
1398 fail:
1399         DEBUG(3, ("Terminating client(%s) connection! - '%s'\n",
1400                   ncacn_conn->client_name, nt_errstr(status)));
1401
1402         /* Terminate client connection */
1403         talloc_free(ncacn_conn);
1404         return;
1405 }
1406
1407 /* vim: set ts=8 sw=8 noet cindent syntax=c.doxygen: */