source4/rpc_server/dcerpc_server.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    server side dcerpc core code
   5
   6    Copyright (C) Andrew Tridgell 2003-2005
   7    Copyright (C) Stefan (metze) Metzmacher 2004-2005
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #include "includes.h"
  24 #include "auth/auth.h"
  25 #include "auth/gensec/gensec.h"
  26 #include "auth/credentials/credentials.h"
  27 #include "rpc_server/dcerpc_server.h"
  28 #include "rpc_server/dcerpc_server_proto.h"
  29 #include "param/param.h"
  30 #include "samba/service_stream.h"
  31 #include "lib/tsocket/tsocket.h"
  32 #include "lib/socket/socket.h"
  33 #include "samba/process_model.h"
  34 #include "lib/util/samba_modules.h"
  35 #include "lib/util/tevent_ntstatus.h"
  36 #include "lib/util/idtree_random.h"
  37
  38 /*
  39   take a reference to an existing association group
  40  */
  41 static struct dcesrv_assoc_group *dcesrv_assoc_group_reference(struct dcesrv_connection *conn,
  42                                                                uint32_t id)
  43 {
  44         const struct dcesrv_endpoint *endpoint = conn->endpoint;
  45         enum dcerpc_transport_t transport =
  46                 dcerpc_binding_get_transport(endpoint->ep_description);
  47         struct dcesrv_assoc_group *assoc_group;
  48         void *id_ptr = NULL;
  49
  50         /* find an association group given a assoc_group_id */
  51         id_ptr = idr_find(conn->dce_ctx->assoc_groups_idr, id);
  52         if (id_ptr == NULL) {
  53                 DBG_NOTICE("Failed to find assoc_group 0x%08x\n", id);
  54                 return NULL;
  55         }
  56         assoc_group = talloc_get_type_abort(id_ptr, struct dcesrv_assoc_group);
  57
  58         if (assoc_group->transport != transport) {
  59                 const char *at =
  60                         derpc_transport_string_by_transport(
  61                                 assoc_group->transport);
  62                 const char *ct =
  63                         derpc_transport_string_by_transport(
  64                                 transport);
  65
  66                 DBG_NOTICE("assoc_group 0x%08x (transport %s) "
  67                            "is not available on transport %s\n",
  68                            id, at, ct);
  69                 return NULL;
  70         }
  71
  72         return talloc_reference(conn, assoc_group);
  73 }
  74
  75 static int dcesrv_assoc_group_destructor(struct dcesrv_assoc_group *assoc_group)
  76 {
  77         int ret;
  78         ret = idr_remove(assoc_group->dce_ctx->assoc_groups_idr, assoc_group->id);
  79         if (ret != 0) {
  80                 DEBUG(0,(__location__ ": Failed to remove assoc_group 0x%08x\n",
  81                          assoc_group->id));
  82         }
  83         SMB_ASSERT(assoc_group->dce_ctx->assoc_groups_num > 0);
  84         assoc_group->dce_ctx->assoc_groups_num -= 1;
  85         return 0;
  86 }
  87
  88 /*
  89   allocate a new association group
  90  */
  91 static struct dcesrv_assoc_group *dcesrv_assoc_group_new(struct dcesrv_connection *conn)
  92 {
  93         struct dcesrv_context *dce_ctx = conn->dce_ctx;
  94         const struct dcesrv_endpoint *endpoint = conn->endpoint;
  95         enum dcerpc_transport_t transport =
  96                 dcerpc_binding_get_transport(endpoint->ep_description);
  97         struct dcesrv_assoc_group *assoc_group;
  98         int id;
  99
 100         assoc_group = talloc_zero(conn, struct dcesrv_assoc_group);
 101         if (assoc_group == NULL) {
 102                 return NULL;
 103         }
 104
 105         id = idr_get_new_random(
 106                 dce_ctx->assoc_groups_idr, assoc_group, 1, UINT16_MAX);
 107         if (id == -1) {
 108                 talloc_free(assoc_group);
 109                 DEBUG(0,(__location__ ": Out of association groups!\n"));
 110                 return NULL;
 111         }
 112
 113         assoc_group->transport = transport;
 114         assoc_group->id = id;
 115         assoc_group->dce_ctx = dce_ctx;
 116
 117         talloc_set_destructor(assoc_group, dcesrv_assoc_group_destructor);
 118
 119         SMB_ASSERT(dce_ctx->assoc_groups_num < UINT16_MAX);
 120         dce_ctx->assoc_groups_num += 1;
 121
 122         return assoc_group;
 123 }
 124
 125 NTSTATUS dcesrv_assoc_group_find_s4(
 126         struct dcesrv_call_state *call,
 127         void *private_data)
 128 {
 129         /*
 130           if provided, check the assoc_group is valid
 131          */
 132         if (call->pkt.u.bind.assoc_group_id != 0) {
 133                 call->conn->assoc_group =
 134                         dcesrv_assoc_group_reference(call->conn,
 135                                         call->pkt.u.bind.assoc_group_id);
 136         } else {
 137                 call->conn->assoc_group = dcesrv_assoc_group_new(call->conn);
 138         }
 139
 140         /*
 141          * The NETLOGON server does not use handles and so
 142          * there is no need to support association groups, but
 143          * we need to give back a number regardless.
 144          *
 145          * We have to do this when it is not run as a single process,
 146          * because then it can't see the other valid association
 147          * groups.  We handle this generically for all endpoints not
 148          * running in single process mode.
 149          *
 150          * We know which endpoint we are on even before checking the
 151          * iface UUID, so for simplicity we enforce the same policy
 152          * for all interfaces on the endpoint.
 153          *
 154          * This means that where NETLOGON
 155          * shares an endpoint (such as ncalrpc or if 'lsa over
 156          * netlogon' is set) we will still check association groups.
 157          *
 158          */
 159
 160         if (call->conn->assoc_group == NULL &&
 161             !call->conn->endpoint->use_single_process) {
 162                 call->conn->assoc_group
 163                         = dcesrv_assoc_group_new(call->conn);
 164         }
 165
 166         if (call->conn->assoc_group == NULL) {
 167                 /* TODO Return correct status */
 168                 return NT_STATUS_UNSUCCESSFUL;
 169         }
 170
 171         return NT_STATUS_OK;
 172 }
 173
 174 void dcerpc_server_init(struct loadparm_context *lp_ctx)
 175 {
 176         static bool initialized;
 177 #define _MODULE_PROTO(init) extern NTSTATUS init(TALLOC_CTX *);
 178         STATIC_dcerpc_server_MODULES_PROTO;
 179         init_module_fn static_init[] = { STATIC_dcerpc_server_MODULES };
 180         init_module_fn *shared_init;
 181
 182         if (initialized) {
 183                 return;
 184         }
 185         initialized = true;
 186
 187         shared_init = load_samba_modules(NULL, "dcerpc_server");
 188
 189         run_init_functions(NULL, static_init);
 190         run_init_functions(NULL, shared_init);
 191
 192         talloc_free(shared_init);
 193 }
 194
 195 struct dcesrv_socket_context {
 196         const struct dcesrv_endpoint *endpoint;
 197         struct dcesrv_context *dcesrv_ctx;
 198 };
 199
 200 static void dcesrv_sock_accept(struct stream_connection *srv_conn)
 201 {
 202         NTSTATUS status;
 203         struct dcesrv_socket_context *dcesrv_sock =
 204                 talloc_get_type(srv_conn->private_data, struct dcesrv_socket_context);
 205         enum dcerpc_transport_t transport =
 206                 dcerpc_binding_get_transport(dcesrv_sock->endpoint->ep_description);
 207         struct dcesrv_connection *dcesrv_conn = NULL;
 208         int ret;
 209         struct loadparm_context *lp_ctx = dcesrv_sock->dcesrv_ctx->lp_ctx;
 210
 211         dcesrv_cleanup_broken_connections(dcesrv_sock->dcesrv_ctx);
 212
 213         if (!srv_conn->session_info) {
 214                 status = auth_anonymous_session_info(srv_conn,
 215                                                      lp_ctx,
 216                                                      &srv_conn->session_info);
 217                 if (!NT_STATUS_IS_OK(status)) {
 218                         DEBUG(0,("dcesrv_sock_accept: auth_anonymous_session_info failed: %s\n",
 219                                 nt_errstr(status)));
 220                         stream_terminate_connection(srv_conn, nt_errstr(status));
 221                         return;
 222                 }
 223         }
 224
 225         /*
 226          * This fills in dcesrv_conn->endpoint with the endpoint
 227          * associated with the socket.  From this point on we know
 228          * which (group of) services we are handling, but not the
 229          * specific interface.
 230          */
 231
 232         status = dcesrv_endpoint_connect(dcesrv_sock->dcesrv_ctx,
 233                                          srv_conn,
 234                                          dcesrv_sock->endpoint,
 235                                          srv_conn->session_info,
 236                                          srv_conn->event.ctx,
 237                                          DCESRV_CALL_STATE_FLAG_MAY_ASYNC,
 238                                          &dcesrv_conn);
 239         if (!NT_STATUS_IS_OK(status)) {
 240                 DEBUG(0,("dcesrv_sock_accept: dcesrv_endpoint_connect failed: %s\n",
 241                         nt_errstr(status)));
 242                 stream_terminate_connection(srv_conn, nt_errstr(status));
 243                 return;
 244         }
 245
 246         dcesrv_conn->transport.private_data             = srv_conn;
 247         dcesrv_conn->transport.report_output_data       = dcesrv_sock_report_output_data;
 248         dcesrv_conn->transport.terminate_connection     = dcesrv_transport_terminate_connection_s4;
 249
 250         TALLOC_FREE(srv_conn->event.fde);
 251
 252         dcesrv_conn->send_queue = tevent_queue_create(dcesrv_conn, "dcesrv send queue");
 253         if (!dcesrv_conn->send_queue) {
 254                 status = NT_STATUS_NO_MEMORY;
 255                 DEBUG(0,("dcesrv_sock_accept: tevent_queue_create(%s)\n",
 256                         nt_errstr(status)));
 257                 stream_terminate_connection(srv_conn, nt_errstr(status));
 258                 return;
 259         }
 260
 261         if (transport == NCACN_NP) {
 262                 dcesrv_conn->stream = talloc_move(dcesrv_conn,
 263                                                   &srv_conn->tstream);
 264         } else {
 265                 ret = tstream_bsd_existing_socket(dcesrv_conn,
 266                                                   socket_get_fd(srv_conn->socket),
 267                                                   &dcesrv_conn->stream);
 268                 if (ret == -1) {
 269                         status = map_nt_error_from_unix_common(errno);
 270                         DEBUG(0, ("dcesrv_sock_accept: "
 271                                   "failed to setup tstream: %s\n",
 272                                   nt_errstr(status)));
 273                         stream_terminate_connection(srv_conn, nt_errstr(status));
 274                         return;
 275                 }
 276                 socket_set_flags(srv_conn->socket, SOCKET_FLAG_NOCLOSE);
 277                 /* as server we want to fail early */
 278                 tstream_bsd_fail_readv_first_error(dcesrv_conn->stream, true);
 279         }
 280
 281         dcesrv_conn->local_address = srv_conn->local_address;
 282         dcesrv_conn->remote_address = srv_conn->remote_address;
 283
 284         if (transport == NCALRPC) {
 285                 uid_t uid;
 286                 gid_t gid;
 287                 int sock_fd;
 288
 289                 sock_fd = socket_get_fd(srv_conn->socket);
 290                 if (sock_fd == -1) {
 291                         stream_terminate_connection(
 292                                 srv_conn, "socket_get_fd failed\n");
 293                         return;
 294                 }
 295
 296                 ret = getpeereid(sock_fd, &uid, &gid);
 297                 if (ret == -1) {
 298                         status = map_nt_error_from_unix_common(errno);
 299                         DEBUG(0, ("dcesrv_sock_accept: "
 300                                   "getpeereid() failed for NCALRPC: %s\n",
 301                                   nt_errstr(status)));
 302                         stream_terminate_connection(srv_conn, nt_errstr(status));
 303                         return;
 304                 }
 305                 if (uid == dcesrv_conn->dce_ctx->initial_euid) {
 306                         struct tsocket_address *r = NULL;
 307
 308                         ret = tsocket_address_unix_from_path(dcesrv_conn,
 309                                                              AS_SYSTEM_MAGIC_PATH_TOKEN,
 310                                                              &r);
 311                         if (ret == -1) {
 312                                 status = map_nt_error_from_unix_common(errno);
 313                                 DEBUG(0, ("dcesrv_sock_accept: "
 314                                           "tsocket_address_unix_from_path() failed for NCALRPC: %s\n",
 315                                           nt_errstr(status)));
 316                                 stream_terminate_connection(srv_conn, nt_errstr(status));
 317                                 return;
 318                         }
 319                         dcesrv_conn->remote_address = r;
 320                 }
 321         }
 322
 323         srv_conn->private_data = dcesrv_conn;
 324
 325         status = dcesrv_connection_loop_start(dcesrv_conn);
 326         if (!NT_STATUS_IS_OK(status)) {
 327                 DEBUG(0,("dcesrv_sock_accept: dcerpc_read_fragment_buffer_send(%s)\n",
 328                         nt_errstr(status)));
 329                 stream_terminate_connection(srv_conn, nt_errstr(status));
 330                 return;
 331         }
 332
 333         return;
 334 }
 335
 336 static void dcesrv_sock_recv(struct stream_connection *conn, uint16_t flags)
 337 {
 338         struct dcesrv_connection *dce_conn = talloc_get_type(conn->private_data,
 339                                              struct dcesrv_connection);
 340         dcesrv_terminate_connection(dce_conn, "dcesrv_sock_recv triggered");
 341 }
 342
 343 static void dcesrv_sock_send(struct stream_connection *conn, uint16_t flags)
 344 {
 345         struct dcesrv_connection *dce_conn = talloc_get_type(conn->private_data,
 346                                              struct dcesrv_connection);
 347         dcesrv_terminate_connection(dce_conn, "dcesrv_sock_send triggered");
 348 }
 349
 350
 351 static const struct stream_server_ops dcesrv_stream_ops = {
 352         .name                   = "rpc",
 353         .accept_connection      = dcesrv_sock_accept,
 354         .recv_handler           = dcesrv_sock_recv,
 355         .send_handler           = dcesrv_sock_send,
 356 };
 357
 358 static NTSTATUS dcesrv_add_ep_unix(struct dcesrv_context *dce_ctx,
 359                                    struct loadparm_context *lp_ctx,
 360                                    struct dcesrv_endpoint *e,
 361                                    struct tevent_context *event_ctx,
 362                                    const struct model_ops *model_ops,
 363                                    void *process_context)
 364 {
 365         struct dcesrv_socket_context *dcesrv_sock;
 366         uint16_t port = 1;
 367         NTSTATUS status;
 368         const char *endpoint;
 369
 370         dcesrv_sock = talloc_zero(event_ctx, struct dcesrv_socket_context);
 371         NT_STATUS_HAVE_NO_MEMORY(dcesrv_sock);
 372
 373         /* remember the endpoint of this socket */
 374         dcesrv_sock->endpoint           = e;
 375         dcesrv_sock->dcesrv_ctx         = talloc_reference(dcesrv_sock, dce_ctx);
 376
 377         endpoint = dcerpc_binding_get_string_option(e->ep_description, "endpoint");
 378
 379         status = stream_setup_socket(dcesrv_sock, event_ctx, lp_ctx,
 380                                      model_ops, &dcesrv_stream_ops,
 381                                      "unix", endpoint, &port,
 382                                      lpcfg_socket_options(lp_ctx),
 383                                      dcesrv_sock, process_context);
 384         if (!NT_STATUS_IS_OK(status)) {
 385                 DEBUG(0,("service_setup_stream_socket(path=%s) failed - %s\n",
 386                          endpoint, nt_errstr(status)));
 387         }
 388
 389         return status;
 390 }
 391
 392 static NTSTATUS dcesrv_add_ep_ncalrpc(struct dcesrv_context *dce_ctx,
 393                                       struct loadparm_context *lp_ctx,
 394                                       struct dcesrv_endpoint *e,
 395                                       struct tevent_context *event_ctx,
 396                                       const struct model_ops *model_ops,
 397                                       void *process_context)
 398 {
 399         struct dcesrv_socket_context *dcesrv_sock;
 400         uint16_t port = 1;
 401         char *full_path;
 402         NTSTATUS status;
 403         const char *endpoint;
 404
 405         endpoint = dcerpc_binding_get_string_option(e->ep_description, "endpoint");
 406
 407         if (endpoint == NULL) {
 408                 /*
 409                  * No identifier specified: use DEFAULT.
 410                  *
 411                  * TODO: DO NOT hardcode this value anywhere else. Rather, specify
 412                  * no endpoint and let the epmapper worry about it.
 413                  */
 414                 endpoint = "DEFAULT";
 415                 status = dcerpc_binding_set_string_option(e->ep_description,
 416                                                           "endpoint",
 417                                                           endpoint);
 418                 if (!NT_STATUS_IS_OK(status)) {
 419                         DEBUG(0,("dcerpc_binding_set_string_option() failed - %s\n",
 420                                   nt_errstr(status)));
 421                         return status;
 422                 }
 423         }
 424
 425         full_path = talloc_asprintf(dce_ctx, "%s/%s", lpcfg_ncalrpc_dir(lp_ctx),
 426                                     endpoint);
 427
 428         dcesrv_sock = talloc_zero(event_ctx, struct dcesrv_socket_context);
 429         NT_STATUS_HAVE_NO_MEMORY(dcesrv_sock);
 430
 431         /* remember the endpoint of this socket */
 432         dcesrv_sock->endpoint           = e;
 433         dcesrv_sock->dcesrv_ctx         = talloc_reference(dcesrv_sock, dce_ctx);
 434
 435         status = stream_setup_socket(dcesrv_sock, event_ctx, lp_ctx,
 436                                      model_ops, &dcesrv_stream_ops,
 437                                      "unix", full_path, &port,
 438                                      lpcfg_socket_options(lp_ctx),
 439                                      dcesrv_sock, process_context);
 440         if (!NT_STATUS_IS_OK(status)) {
 441                 DEBUG(0,("service_setup_stream_socket(identifier=%s,path=%s) failed - %s\n",
 442                          endpoint, full_path, nt_errstr(status)));
 443         }
 444         return status;
 445 }
 446
 447 static NTSTATUS dcesrv_add_ep_np(struct dcesrv_context *dce_ctx,
 448                                  struct loadparm_context *lp_ctx,
 449                                  struct dcesrv_endpoint *e,
 450                                  struct tevent_context *event_ctx,
 451                                  const struct model_ops *model_ops,
 452                                  void *process_context)
 453 {
 454         struct dcesrv_socket_context *dcesrv_sock;
 455         NTSTATUS status;
 456         const char *endpoint;
 457
 458         endpoint = dcerpc_binding_get_string_option(e->ep_description, "endpoint");
 459         if (endpoint == NULL) {
 460                 DEBUG(0, ("Endpoint mandatory for named pipes\n"));
 461                 return NT_STATUS_INVALID_PARAMETER;
 462         }
 463
 464         dcesrv_sock = talloc_zero(event_ctx, struct dcesrv_socket_context);
 465         NT_STATUS_HAVE_NO_MEMORY(dcesrv_sock);
 466
 467         /* remember the endpoint of this socket */
 468         dcesrv_sock->endpoint           = e;
 469         dcesrv_sock->dcesrv_ctx         = talloc_reference(dcesrv_sock, dce_ctx);
 470
 471         status = tstream_setup_named_pipe(dce_ctx, event_ctx, lp_ctx,
 472                                           model_ops, &dcesrv_stream_ops,
 473                                           endpoint,
 474                                           dcesrv_sock, process_context);
 475         if (!NT_STATUS_IS_OK(status)) {
 476                 DEBUG(0,("stream_setup_named_pipe(pipe=%s) failed - %s\n",
 477                          endpoint, nt_errstr(status)));
 478                 return status;
 479         }
 480
 481         return NT_STATUS_OK;
 482 }
 483
 484 /*
 485   add a socket address to the list of events, one event per dcerpc endpoint
 486 */
 487 static NTSTATUS add_socket_rpc_tcp_iface(struct dcesrv_context *dce_ctx,
 488                                          struct dcesrv_endpoint *e,
 489                                          struct tevent_context *event_ctx,
 490                                          const struct model_ops *model_ops,
 491                                          const char *address,
 492                                          void *process_context)
 493 {
 494         struct dcesrv_socket_context *dcesrv_sock;
 495         uint16_t port = 0;
 496         NTSTATUS status;
 497         const char *endpoint;
 498         char port_str[6];
 499
 500         endpoint = dcerpc_binding_get_string_option(e->ep_description, "endpoint");
 501         if (endpoint != NULL) {
 502                 port = atoi(endpoint);
 503         }
 504
 505         dcesrv_sock = talloc_zero(event_ctx, struct dcesrv_socket_context);
 506         NT_STATUS_HAVE_NO_MEMORY(dcesrv_sock);
 507
 508         /* remember the endpoint of this socket */
 509         dcesrv_sock->endpoint           = e;
 510         dcesrv_sock->dcesrv_ctx         = talloc_reference(dcesrv_sock, dce_ctx);
 511
 512         status = stream_setup_socket(dcesrv_sock, event_ctx, dce_ctx->lp_ctx,
 513                                      model_ops, &dcesrv_stream_ops,
 514                                      "ip", address, &port,
 515                                      lpcfg_socket_options(dce_ctx->lp_ctx),
 516                                      dcesrv_sock, process_context);
 517         if (!NT_STATUS_IS_OK(status)) {
 518                 struct dcesrv_if_list *iface;
 519                 DEBUG(0,("service_setup_stream_socket(address=%s,port=%u) for ",
 520                          address, port));
 521                 for (iface = e->interface_list; iface; iface = iface->next) {
 522                         DEBUGADD(0, ("%s ", iface->iface->name));
 523                 }
 524                 DEBUGADD(0, ("failed - %s\n",
 525                              nt_errstr(status)));
 526                 return status;
 527         }
 528
 529         snprintf(port_str, sizeof(port_str), "%u", port);
 530
 531         status = dcerpc_binding_set_string_option(e->ep_description,
 532                                                   "endpoint", port_str);
 533         if (!NT_STATUS_IS_OK(status)) {
 534                 DEBUG(0,("dcerpc_binding_set_string_option(endpoint, %s) failed - %s\n",
 535                          port_str, nt_errstr(status)));
 536                 return status;
 537         } else {
 538                 struct dcesrv_if_list *iface;
 539                 DEBUG(4,("Successfully listening on ncacn_ip_tcp endpoint [%s]:[%s] for ",
 540                          address, port_str));
 541                 for (iface = e->interface_list; iface; iface = iface->next) {
 542                         DEBUGADD(4, ("%s ", iface->iface->name));
 543                 }
 544                 DEBUGADD(4, ("\n"));
 545         }
 546
 547         return NT_STATUS_OK;
 548 }
 549
 550 #include "lib/socket/netif.h" /* Included here to work around the fact that socket_wrapper redefines bind() */
 551
 552 static NTSTATUS dcesrv_add_ep_tcp(struct dcesrv_context *dce_ctx,
 553                                   struct loadparm_context *lp_ctx,
 554                                   struct dcesrv_endpoint *e,
 555                                   struct tevent_context *event_ctx,
 556                                   const struct model_ops *model_ops,
 557                                   void *process_context)
 558 {
 559         NTSTATUS status;
 560
 561         /* Add TCP/IP sockets */
 562         if (lpcfg_interfaces(lp_ctx) && lpcfg_bind_interfaces_only(lp_ctx)) {
 563                 int num_interfaces;
 564                 int i;
 565                 struct interface *ifaces;
 566
 567                 load_interface_list(dce_ctx, lp_ctx, &ifaces);
 568
 569                 num_interfaces = iface_list_count(ifaces);
 570                 for(i = 0; i < num_interfaces; i++) {
 571                         const char *address = iface_list_n_ip(ifaces, i);
 572                         status = add_socket_rpc_tcp_iface(dce_ctx, e, event_ctx,
 573                                                           model_ops, address,
 574                                                           process_context);
 575                         NT_STATUS_NOT_OK_RETURN(status);
 576                 }
 577         } else {
 578                 char **wcard;
 579                 size_t i;
 580                 size_t num_binds = 0;
 581                 wcard = iface_list_wildcard(dce_ctx);
 582                 NT_STATUS_HAVE_NO_MEMORY(wcard);
 583                 for (i=0; wcard[i]; i++) {
 584                         status = add_socket_rpc_tcp_iface(dce_ctx, e, event_ctx,
 585                                                           model_ops, wcard[i],
 586                                                           process_context);
 587                         if (NT_STATUS_IS_OK(status)) {
 588                                 num_binds++;
 589                         }
 590                 }
 591                 talloc_free(wcard);
 592                 if (num_binds == 0) {
 593                         return NT_STATUS_INVALID_PARAMETER_MIX;
 594                 }
 595         }
 596
 597         return NT_STATUS_OK;
 598 }
 599
 600 NTSTATUS dcesrv_add_ep(struct dcesrv_context *dce_ctx,
 601                        struct loadparm_context *lp_ctx,
 602                        struct dcesrv_endpoint *e,
 603                        struct tevent_context *event_ctx,
 604                        const struct model_ops *model_ops,
 605                        void *process_context)
 606 {
 607         enum dcerpc_transport_t transport =
 608                 dcerpc_binding_get_transport(e->ep_description);
 609
 610         switch (transport) {
 611         case NCACN_UNIX_STREAM:
 612                 return dcesrv_add_ep_unix(dce_ctx, lp_ctx, e, event_ctx,
 613                                           model_ops, process_context);
 614
 615         case NCALRPC:
 616                 return dcesrv_add_ep_ncalrpc(dce_ctx, lp_ctx, e, event_ctx,
 617                                              model_ops, process_context);
 618
 619         case NCACN_IP_TCP:
 620                 return dcesrv_add_ep_tcp(dce_ctx, lp_ctx, e, event_ctx,
 621                                          model_ops, process_context);
 622
 623         case NCACN_NP:
 624                 return dcesrv_add_ep_np(dce_ctx, lp_ctx, e, event_ctx,
 625                                         model_ops, process_context);
 626
 627         default:
 628                 return NT_STATUS_NOT_SUPPORTED;
 629         }
 630 }
 631
 632 _PUBLIC_ struct imessaging_context *dcesrv_imessaging_context(
 633                                         struct dcesrv_connection *conn)
 634 {
 635         struct stream_connection *srv_conn =
 636                 talloc_get_type_abort(conn->transport.private_data,
 637                                       struct stream_connection);
 638         return srv_conn->msg_ctx;
 639 }
 640
 641 _PUBLIC_ struct server_id dcesrv_server_id(struct dcesrv_connection *conn)
 642 {
 643         struct stream_connection *srv_conn =
 644                 talloc_get_type_abort(conn->transport.private_data,
 645                                 struct stream_connection);
 646         return srv_conn->server_id;
 647 }
 648
 649 void log_successful_dcesrv_authz_event(
 650         struct dcesrv_call_state *call,
 651         void *private_data)
 652 {
 653         struct dcesrv_auth *auth = call->auth_state;
 654         enum dcerpc_transport_t transport =
 655                 dcerpc_binding_get_transport(call->conn->endpoint->ep_description);
 656         struct imessaging_context *imsg_ctx =
 657                 dcesrv_imessaging_context(call->conn);
 658         const char *auth_type = derpc_transport_string_by_transport(transport);
 659         const char *transport_protection = AUTHZ_TRANSPORT_PROTECTION_NONE;
 660
 661         if (transport == NCACN_NP) {
 662                 transport_protection = AUTHZ_TRANSPORT_PROTECTION_SMB;
 663         }
 664
 665         /*
 666          * Log the authorization to this RPC interface.  This
 667          * covered ncacn_np pass-through auth, and anonymous
 668          * DCE/RPC (eg epmapper, netlogon etc)
 669          */
 670         log_successful_authz_event(imsg_ctx,
 671                                    call->conn->dce_ctx->lp_ctx,
 672                                    call->conn->remote_address,
 673                                    call->conn->local_address,
 674                                    "DCE/RPC",
 675                                    auth_type,
 676                                    transport_protection,
 677                                    auth->session_info,
 678                                    NULL /* client_audit_info */,
 679                                    NULL /* server_audit_info */);
 680
 681         auth->auth_audited = true;
 682 }
 683
 684 NTSTATUS dcesrv_gensec_prepare(
 685         TALLOC_CTX *mem_ctx,
 686         struct dcesrv_call_state *call,
 687         struct gensec_security **out,
 688         void *private_data)
 689 {
 690         struct cli_credentials *server_creds = NULL;
 691         struct imessaging_context *imsg_ctx =
 692                 dcesrv_imessaging_context(call->conn);
 693         bool ok;
 694
 695         server_creds = cli_credentials_init_server(call->auth_state,
 696                                                    call->conn->dce_ctx->lp_ctx);
 697         if (server_creds == NULL) {
 698                 DEBUG(1, ("Failed to init server credentials\n"));
 699                 return NT_STATUS_NO_MEMORY;
 700         }
 701         /* This is required for ncalrpc_as_system. */
 702         ok = cli_credentials_set_kerberos_state(server_creds,
 703                                                 CRED_USE_KERBEROS_DESIRED,
 704                                                 CRED_SPECIFIED);
 705         if (!ok) {
 706                 DBG_WARNING("Failed to set kerberos state\n");
 707                 return NT_STATUS_INTERNAL_ERROR;
 708         }
 709
 710         return samba_server_gensec_start(mem_ctx,
 711                                          call->event_ctx,
 712                                          imsg_ctx,
 713                                          call->conn->dce_ctx->lp_ctx,
 714                                          server_creds,
 715                                          NULL,
 716                                          out);
 717 }
 718
 719 void dcesrv_transport_terminate_connection_s4(struct dcesrv_connection *dce_conn,
 720                                               const char *reason)
 721 {
 722         struct stream_connection *srv_conn =
 723                 talloc_get_type_abort(dce_conn->transport.private_data,
 724                                       struct stream_connection);
 725         stream_terminate_connection(srv_conn, reason);
 726 }