2 * Copyright (c) 2016, JANET(UK)
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
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13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of JANET(UK) nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
31 * OF THE POSSIBILITY OF SUCH DAMAGE.
38 #include <event2/event.h>
50 #include <trp_route.h>
51 #include <trp_internal.h>
53 #include <trp_ptable.h>
54 #include <trp_rtable.h>
55 #include <tr_config.h>
61 /* data for event callbacks */
62 struct tr_trps_event_cookie {
68 /* callback to schedule event to process messages */
69 static void tr_trps_mq_cb(TR_MQ *mq, void *arg)
71 struct event *mq_ev=(struct event *)arg;
72 event_active(mq_ev, 0, 0);
75 static void msg_free_helper(void *p)
77 tr_msg_free_decoded((TR_MSG *)p);
80 static void tr_free_name_helper(void *arg)
82 tr_free_name((TR_NAME *)arg);
85 /* takes a TR_MSG and puts it in a TR_MQ_MSG for processing by the main thread */
86 static TRP_RC tr_trps_msg_handler(TRPS_INSTANCE *trps,
90 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
91 TR_MQ_MSG *mq_msg=NULL;
93 /* n.b., conn is available here, but do not hold onto the reference
94 * because it may be cleaned up if the originating connection goes
95 * down before the message is processed */
96 mq_msg= tr_mq_msg_new(tmp_ctx, TR_MQMSG_MSG_RECEIVED);
100 tr_mq_msg_set_payload(mq_msg, (void *)tr_msg, msg_free_helper);
101 trps_mq_add(trps, mq_msg);
102 talloc_free(tmp_ctx); /* cleans up the message if it did not get appended correctly */
107 static int tr_trps_gss_handler(gss_name_t client_name, gss_buffer_t gss_name,
110 struct tr_trps_event_cookie *cookie=(struct tr_trps_event_cookie *)cookie_in;
111 TRPS_INSTANCE *trps = cookie->trps;
112 TR_CFG_MGR *cfg_mgr = cookie->cfg_mgr;
113 TR_NAME name={gss_name->value, gss_name->length};
115 tr_debug("tr_trps_gss_handler()");
117 if ((!client_name) || (!trps) || (!cfg_mgr)) {
118 tr_debug("tr_trps_gss_handler: Bad parameters.");
122 /* look up the TRPS peer matching the GSS name */
123 if (NULL==trps_get_peer_by_gssname(trps, &name)) {
124 tr_warning("tr_trps_gss_handler: Connection attempt from unknown peer (GSS name: %.*s).", name.len, name.buf);
128 tr_debug("Client's GSS Name: %.*s", name.len, name.buf);
132 /* data passed to thread */
133 struct trps_thread_data {
134 TRP_CONNECTION *conn;
137 /* thread to handle GSS connections from peers */
138 static void *tr_trps_thread(void *arg)
140 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
141 struct trps_thread_data *thread_data=talloc_get_type_abort(arg, struct trps_thread_data);
142 TRP_CONNECTION *conn=thread_data->conn;
143 TRPS_INSTANCE *trps=thread_data->trps;
146 tr_debug("tr_trps_thread: started");
147 if (trps_authorize_connection(trps, conn)!=TRP_SUCCESS)
150 msg= tr_mq_msg_new(tmp_ctx, TR_MQMSG_TRPS_CONNECTED);
151 tr_mq_msg_set_payload(msg, (void *)tr_dup_name(trp_connection_get_peer(conn)), tr_free_name_helper);
153 tr_err("tr_trps_thread: error allocating TR_MQ_MSG");
156 trps_mq_add(trps, msg); /* steals msg context */
159 trps_handle_connection(trps, conn);
162 msg= tr_mq_msg_new(tmp_ctx, TR_MQMSG_TRPS_DISCONNECTED);
163 tr_mq_msg_set_payload(msg, (void *)conn, NULL); /* do not pass a free routine */
165 tr_err("tr_trps_thread: error allocating TR_MQ_MSG");
167 trps_mq_add(trps, msg);
168 tr_debug("tr_trps_thread: exit");
169 talloc_free(tmp_ctx);
173 /* called when a connection to the TRPS port is received */
174 static void tr_trps_event_cb(int listener, short event, void *arg)
176 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
177 TRPS_INSTANCE *trps = talloc_get_type_abort(arg, TRPS_INSTANCE); /* aborts on wrong type */
178 TRP_CONNECTION *conn=NULL;
179 TR_NAME *gssname=NULL;
181 struct trps_thread_data *thread_data=NULL;
183 if (0==(event & EV_READ)) {
184 tr_debug("tr_trps_event_cb: unexpected event on TRPS socket (event=0x%X)", event);
186 /* create a thread to handle this connection */
187 name = talloc_asprintf(tmp_ctx, "trustrouter@%s", trps->hostname);
190 gssname=tr_new_name(name); /* name cleaned up with tmp_ctx but need to handl gssname ourselves */
192 conn=trp_connection_accept(tmp_ctx, listener, gssname); /* steals gssname unless it fails */
194 tr_free_name(gssname);
196 /* need to monitor this fd and trigger events when read becomes possible */
197 thread_data=talloc(conn, struct trps_thread_data);
198 if (thread_data==NULL) {
199 tr_err("tr_trps_event_cb: unable to allocate trps_thread_data");
202 thread_data->conn=conn;
203 thread_data->trps=trps;
204 trps_add_connection(trps, conn); /* remember the connection - this puts conn and the thread data in trps's talloc context */
205 pthread_create(trp_connection_get_thread(conn), NULL, tr_trps_thread, thread_data);
210 talloc_free(tmp_ctx);
213 static void tr_trps_cleanup_conn(TRPS_INSTANCE *trps, TRP_CONNECTION *conn)
215 /* everything belonging to the thread is in the TRP_CONNECTION
216 * associated with it */
217 tr_debug("tr_trps_cleanup_conn: freeing %p", conn);
218 pthread_join(*trp_connection_get_thread(conn), NULL);
219 trps_remove_connection(trps, conn);
220 trp_connection_free(conn);
221 tr_debug("tr_trps_cleanup_conn: deleted connection");
224 static void tr_trps_cleanup_trpc(TRPS_INSTANCE *trps, TRPC_INSTANCE *trpc)
226 pthread_join(*trp_connection_get_thread(trpc_get_conn(trpc)), NULL);
227 trps_remove_trpc(trps, trpc);
229 tr_debug("tr_trps_cleanup_trpc: deleted connection");
233 * Get a dynamically allocated string with a description of the route table.
234 * Caller must free the string using talloc_free().
236 * @param memctx talloc context for the string
237 * @param trps trps instance containing the route table
238 * @return pointer to the output, or NULL on error
240 static char *tr_trps_route_table_to_str(TALLOC_CTX *memctx, TRPS_INSTANCE *trps)
242 return trp_rtable_to_str(memctx, trps->rtable, " | ", NULL);
246 * Get a dynamically allocated string with a description of the community table.
247 * Caller must free the string using talloc_free().
249 * @param memctx talloc context for the string
250 * @param trps trps instance containing the community table
251 * @return pointer to the output, or NULL on error
253 static char *tr_trps_comm_table_to_str(TALLOC_CTX *memctx, TRPS_INSTANCE *trps)
255 return tr_comm_table_to_str(memctx, trps->ctable);
259 * Event handler to process TRP messages from connection threads. These
260 * are added to the message queue (mq) in tr_trps_msg_handler(), which
261 * runs in the other threads.
263 * @param socket Ignored
264 * @param event Ignored
265 * @param arg Pointer to the TRPS_INSTANCE
267 static void tr_trps_process_mq(int socket, short event, void *arg)
269 TRPS_INSTANCE *trps=talloc_get_type_abort(arg, TRPS_INSTANCE);
272 TRP_PEER *peer = NULL;
275 msg=trps_mq_pop(trps);
277 s=tr_mq_msg_get_message(msg);
278 if (0==strcmp(s, TR_MQMSG_TRPS_CONNECTED)) {
279 TR_NAME *peer_gssname=(TR_NAME *)tr_mq_msg_get_payload(msg);
280 peer=trps_get_peer_by_gssname(trps, peer_gssname); /* get the peer record */
281 tmp = tr_name_strdup(peer_gssname); /* get the name as a null-terminated string */
283 tr_err("tr_trps_process_mq: incoming connection from unknown peer (%s) reported.", tmp);
285 trp_peer_set_incoming_status(peer, PEER_CONNECTED);
286 tr_notice("tr_trps_process_mq: incoming connection from %s established.", tmp);
290 else if (0==strcmp(s, TR_MQMSG_TRPS_DISCONNECTED)) {
291 TRP_CONNECTION *conn=talloc_get_type_abort(tr_mq_msg_get_payload(msg), TRP_CONNECTION);
292 TR_NAME *peer_gssname=trp_connection_get_peer(conn);
293 peer=trps_get_peer_by_gssname(trps, peer_gssname); /* get the peer record */
294 tmp = tr_name_strdup(peer_gssname); /* get the name as a null-terminated string */
296 tr_err("tr_trps_process_mq: incoming connection from unknown peer (%.*s) lost.", tmp);
298 trp_peer_set_incoming_status(peer, PEER_DISCONNECTED);
299 tr_trps_cleanup_conn(trps, conn);
300 tr_notice("tr_trps_process_mq: incoming connection from %s lost.", tmp);
304 else if (0==strcmp(s, TR_MQMSG_TRPC_CONNECTED)) {
305 TR_NAME *svcname=(TR_NAME *)tr_mq_msg_get_payload(msg);
306 peer=trps_get_peer_by_servicename(trps, svcname);
307 tmp = tr_name_strdup(svcname);
309 tr_err("tr_trps_process_mq: outgoing connection to unknown peer (%s) reported.", tmp);
311 trp_peer_set_outgoing_status(peer, PEER_CONNECTED);
312 tr_notice("tr_trps_process_mq: outgoing connection to %s established.", tmp);
316 else if (0==strcmp(s, TR_MQMSG_TRPC_DISCONNECTED)) {
317 TRPC_INSTANCE *trpc=talloc_get_type_abort(tr_mq_msg_get_payload(msg), TRPC_INSTANCE);
318 TR_NAME *svcname=trpc_get_gssname(trpc);
319 peer=trps_get_peer_by_servicename(trps, svcname);
320 tmp = tr_name_strdup(svcname);
322 tr_err("tr_trps_process_mq: outgoing connection to unknown peer (%s) lost.", tmp);
324 trp_peer_set_outgoing_status(peer, PEER_DISCONNECTED);
325 tr_notice("tr_trps_process_mq: outgoing connection to %s lost.", tmp);
326 tr_trps_cleanup_trpc(trps, trpc);
331 else if (0==strcmp(s, TR_MQMSG_MSG_RECEIVED)) {
332 if (trps_handle_tr_msg(trps, tr_mq_msg_get_payload(msg))!=TRP_SUCCESS)
333 tr_notice("tr_trps_process_mq: error handling message.");
336 tr_notice("tr_trps_process_mq: unknown message '%s' received.", tr_mq_msg_get_message(msg));
339 msg=trps_mq_pop(trps);
343 static void tr_trps_update(int listener, short event, void *arg)
345 struct tr_trps_event_cookie *cookie=talloc_get_type_abort(arg, struct tr_trps_event_cookie);
346 TRPS_INSTANCE *trps=cookie->trps;
347 struct event *ev=cookie->ev;
349 tr_debug("tr_trps_update: sending scheduled route/community updates.");
350 trps_update(trps, TRP_UPDATE_SCHEDULED);
351 event_add(ev, &(trps->update_interval));
352 tr_debug("tr_trps_update: update interval=%d", trps->update_interval.tv_sec);
355 static void tr_trps_sweep(int listener, short event, void *arg)
357 struct tr_trps_event_cookie *cookie=talloc_get_type_abort(arg, struct tr_trps_event_cookie);
358 TRPS_INSTANCE *trps=cookie->trps;
359 struct event *ev=cookie->ev;
360 char *table_str=NULL;
362 tr_debug("tr_trps_sweep: sweeping routes.");
363 trps_sweep_routes(trps);
364 tr_debug("tr_trps_sweep: sweeping communities.");
365 trps_sweep_ctable(trps);
366 table_str=tr_trps_route_table_to_str(NULL, trps);
367 if (table_str!=NULL) {
369 talloc_free(table_str);
372 table_str=tr_trps_comm_table_to_str(NULL, trps);
373 if (table_str!=NULL) {
375 talloc_free(table_str);
377 /* schedule the event to run again */
378 event_add(ev, &(trps->sweep_interval));
381 static void tr_connection_update(int listener, short event, void *arg)
383 struct tr_trps_event_cookie *cookie=talloc_get_type_abort(arg, struct tr_trps_event_cookie);
384 TRPS_INSTANCE *trps=cookie->trps;
385 struct event *ev=cookie->ev;
387 tr_debug("tr_connection_update: checking peer connections.");
388 tr_connect_to_peers(trps, ev);
389 /* schedule the event to run again */
390 event_add(ev, &(trps->connect_interval));
393 static int tr_trps_events_destructor(void *obj)
395 TR_TRPS_EVENTS *ev=talloc_get_type_abort(obj, TR_TRPS_EVENTS);
397 event_free(ev->mq_ev);
398 if (ev->connect_ev!=NULL)
399 event_free(ev->connect_ev);
400 if (ev->update_ev!=NULL)
401 event_free(ev->update_ev);
402 if (ev->sweep_ev!=NULL)
403 event_free(ev->sweep_ev);
406 static TR_TRPS_EVENTS *tr_trps_events_new(TALLOC_CTX *mem_ctx)
408 TR_TRPS_EVENTS *ev=talloc(mem_ctx, TR_TRPS_EVENTS);
410 ev->listen_ev=talloc(ev, struct tr_socket_event);
415 if (ev->listen_ev==NULL) {
419 talloc_set_destructor((void *)ev, tr_trps_events_destructor);
425 static void tr_trps_events_free(TR_TRPS_EVENTS *ev)
430 /* Configure the trps instance and set up its event handler.
431 * Fills in trps_ev, which should be allocated by caller. */
432 TRP_RC tr_trps_event_init(struct event_base *base, TR_INSTANCE *tr)
434 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
435 struct tr_socket_event *listen_ev=NULL;
436 struct tr_trps_event_cookie *trps_cookie=NULL;
437 struct tr_trps_event_cookie *connection_cookie=NULL;
438 struct tr_trps_event_cookie *update_cookie=NULL;
439 struct tr_trps_event_cookie *sweep_cookie=NULL;
440 struct timeval zero_time={0,0};
441 TRP_RC retval=TRP_ERROR;
444 if (tr->events != NULL) {
445 tr_notice("tr_trps_event_init: tr->events was not null. Freeing before reallocating..");
446 tr_trps_events_free(tr->events);
449 tr->events=tr_trps_events_new(tmp_ctx);
450 if (tr->events == NULL) {
451 tr_debug("tr_trps_event_init: unable to allocate event handles.");
456 /* get convenient handles */
457 listen_ev=tr->events->listen_ev;
459 /* Create the cookie for callbacks. It will end up part of the trps context, so it will
460 * be cleaned up when trps is freed by talloc_free. */
461 trps_cookie=talloc(tr->events, struct tr_trps_event_cookie);
462 if (trps_cookie == NULL) {
463 tr_debug("tr_trps_event_init: Unable to allocate trps_cookie.");
465 tr_trps_events_free(tr->events);
469 trps_cookie->trps=tr->trps;
470 trps_cookie->cfg_mgr=tr->cfg_mgr;
472 /* get a trps listener */
473 listen_ev->n_sock_fd=trps_get_listener(tr->trps,
476 tr->cfg_mgr->active->internal->hostname,
477 tr->cfg_mgr->active->internal->trps_port,
481 if (listen_ev->n_sock_fd==0) {
482 tr_crit("Error opening TRP server socket.");
484 tr_trps_events_free(tr->events);
489 /* Set up events for the sockets */
490 for (ii=0; ii<listen_ev->n_sock_fd; ii++) {
491 listen_ev->ev[ii]=event_new(base,
492 listen_ev->sock_fd[ii],
496 event_add(listen_ev->ev[ii], NULL);
499 /* now set up message queue processing event, only triggered by
501 tr->events->mq_ev=event_new(base,
506 tr_mq_set_notify_cb(tr->trps->mq, tr_trps_mq_cb, tr->events->mq_ev);
508 /* now set up the peer connection timer event */
509 connection_cookie=talloc(tr->events, struct tr_trps_event_cookie);
510 if (connection_cookie == NULL) {
511 tr_debug("tr_trps_event_init: Unable to allocate connection_cookie.");
513 tr_trps_events_free(tr->events);
517 connection_cookie->trps=tr->trps;
518 connection_cookie->cfg_mgr=tr->cfg_mgr;
519 tr->events->connect_ev=event_new(base, -1, EV_TIMEOUT, tr_connection_update, (void *)connection_cookie);
520 connection_cookie->ev=tr->events->connect_ev; /* in case it needs to frob the event */
521 /* The first time, do this immediately. Thereafter, it will retrigger every trps->connect_interval */
522 event_add(tr->events->connect_ev, &zero_time);
524 /* now set up the route update timer event */
525 update_cookie=talloc(tr->events, struct tr_trps_event_cookie);
526 if (update_cookie == NULL) {
527 tr_debug("tr_trps_event_init: Unable to allocate update_cookie.");
529 tr_trps_events_free(tr->events);
533 update_cookie->trps=tr->trps;
534 update_cookie->cfg_mgr=tr->cfg_mgr;
535 tr->events->update_ev=event_new(base, -1, EV_TIMEOUT, tr_trps_update, (void *)update_cookie);
536 update_cookie->ev=tr->events->update_ev; /* in case it needs to frob the event */
537 event_add(tr->events->update_ev, &(tr->trps->update_interval));
539 /* now set up the route table sweep timer event */
540 sweep_cookie=talloc(tr->events, struct tr_trps_event_cookie);
541 if (sweep_cookie == NULL) {
542 tr_debug("tr_trps_event_init: Unable to allocate sweep_cookie.");
544 tr_trps_events_free(tr->events);
548 sweep_cookie->trps=tr->trps;
549 sweep_cookie->cfg_mgr=tr->cfg_mgr;
550 tr->events->sweep_ev=event_new(base, -1, EV_TIMEOUT, tr_trps_sweep, (void *)sweep_cookie);
551 sweep_cookie->ev=tr->events->sweep_ev; /* in case it needs to frob the event */
552 event_add(tr->events->sweep_ev, &(tr->trps->sweep_interval));
554 talloc_steal(tr, tr->events);
558 talloc_free(tmp_ctx);
562 /* data passed to thread */
563 struct trpc_thread_data {
569 * Thread for handling TRPC (outgoing) connections
571 * Opens a connection to a peer. If successful, notifies the trps thread by
572 * posting a TR_MQMSG_TRPC_CONNECTED message to the trps message queue.
573 * It then waits for messages on trpc->mq. Normally these will be TR_MQMSG_TRPC_SEND
574 * messages, which this thread forwards to the peer. If its connection is lost or
575 * a TR_MQMSG_ABORT message is received on trpc->mq, the thread sends a
576 * TR_MQMSG_TRPC_DISCONNECTED message to the trps thread, then cleans up and
579 * The trps may continue queueing messages for this client even when the
580 * connection is down. To prevent the queue from growing endlessly, this thread
581 * should clear its queue after failed connection attempts.
583 static void *tr_trpc_thread(void *arg)
585 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
586 struct trpc_thread_data *thread_data=talloc_get_type_abort(arg, struct trpc_thread_data);
587 TRPC_INSTANCE *trpc=thread_data->trpc;
588 TRPS_INSTANCE *trps=thread_data->trps;
591 const char *msg_type=NULL;
592 char *encoded_msg=NULL;
593 TR_NAME *peer_gssname=NULL;
594 struct timespec wait_until = {0};
597 tr_debug("tr_trpc_thread: started");
599 /* Try to make the outgoing connection */
600 rc=trpc_connect(trpc);
601 if (rc!=TRP_SUCCESS) {
602 tr_notice("tr_trpc_thread: failed to initiate connection to %s:%d.",
603 trpc_get_server(trpc),
604 trpc_get_port(trpc));
605 trpc_mq_clear(trpc); /* clear the queue even though we did not connect */
607 /* Retrieve the GSS name used by the peer for authentication */
608 peer_gssname=trp_connection_get_peer(trpc_get_conn(trpc));
609 if (peer_gssname==NULL) {
610 tr_err("tr_trpc_thread: could not duplicate peer_gssname.");
611 talloc_free(tmp_ctx);
614 tr_debug("tr_trpc_thread: connected to peer %.*s",
615 peer_gssname->len, peer_gssname->buf);
617 msg= tr_mq_msg_new(tmp_ctx, TR_MQMSG_TRPC_CONNECTED);
618 tr_mq_msg_set_payload(msg, (void *)tr_dup_name(peer_gssname), tr_free_name_helper);
620 tr_err("tr_trpc_thread: error allocating TR_MQ_MSG");
621 talloc_free(tmp_ctx);
624 trps_mq_add(trps, msg); /* steals msg context */
627 /* Loop until we get an abort message or until the connection is lost. */
629 /* Wait up to 10 minutes for a message to be queued to send to the peer.
630 * Log a warning if we go longer than that, but don't give up. */
631 if (tr_mq_pop_timeout(10 * 60, &wait_until) != 0) {
632 tr_err("tr_trpc_thread: unable to set abort timeout");
633 break; /* immediately exit the loop, don't go through cleanup */
636 /* Pop a message from the queue. */
637 msg = trpc_mq_pop(trpc, &wait_until);
639 msg_type = tr_mq_msg_get_message(msg);
640 if (0 == strcmp(msg_type, TR_MQMSG_ABORT)) {
641 tr_debug("tr_trpc_thread: received abort message from main thread.");
643 } else if (0 == strcmp(msg_type, TR_MQMSG_TRPC_SEND)) {
644 encoded_msg = tr_mq_msg_get_payload(msg);
645 if (encoded_msg == NULL)
646 tr_notice("tr_trpc_thread: null outgoing TRP message.");
648 rc = trpc_send_msg(trpc, encoded_msg);
649 if (rc == TRP_SUCCESS) {
650 tr_debug("tr_trpc_thread: sent message.");
652 tr_notice("tr_trpc_thread: trpc_send_msg failed.");
653 /* Assume this means we lost the connection. */
658 tr_notice("tr_trpc_thread: unknown message '%s' received.", msg_type);
662 tr_warning("tr_trpc_thread: no outgoing messages to %.*s for 10 minutes",
663 peer_gssname->len, peer_gssname->buf);
668 /* Send a DISCONNECTED message to the main thread */
669 msg= tr_mq_msg_new(tmp_ctx, TR_MQMSG_TRPC_DISCONNECTED);
670 tr_mq_msg_set_payload(msg, (void *)trpc, NULL); /* do not pass a free routine */
672 /* can't notify main thread */
673 tr_err("tr_trpc_thread: error allocating TR_MQ_MSG");
675 trps_mq_add(trps, msg);
678 talloc_free(tmp_ctx);
679 tr_debug("tr_trpc_thread: thread terminating.");
683 /* convert an IDP realm into routing table entries. Outputs number in *n_routes */
684 static TRP_ROUTE **tr_make_local_routes(TALLOC_CTX *mem_ctx,
689 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
691 TRP_ROUTE *new_entry=NULL;
692 TRP_ROUTE **entries=NULL;
693 size_t n_comms=0, ii=0;
697 if ((realm==NULL) || (realm->origin!=TR_REALM_LOCAL))
701 for (comm=realm->apcs, n_comms=0; comm!=NULL; comm=comm->next,n_comms++) {}
703 entries=talloc_array(tmp_ctx, TRP_ROUTE *, n_comms);
704 for (comm=realm->apcs,ii=0; comm!=NULL; comm=comm->next, ii++) {
705 new_entry=trp_route_new(entries);
706 if (new_entry==NULL) {
707 tr_crit("tr_make_local_routes: unable to allocate entry.");
708 talloc_free(entries);
711 trp_route_set_comm(new_entry, tr_dup_name(comm->id));
712 trp_route_set_realm(new_entry, tr_dup_name(realm->realm_id));
713 trp_route_set_peer(new_entry, tr_new_name("")); /* no peer, it's us */
714 trp_route_set_metric(new_entry, 0);
715 trp_route_set_trust_router(new_entry, tr_new_name(trust_router));
716 trp_route_set_next_hop(new_entry, tr_new_name(""));
717 trp_route_set_local(new_entry, 1);
718 entries[ii]=new_entry;
721 talloc_steal(mem_ctx, entries);
724 talloc_free(tmp_ctx);
728 void tr_peer_status_change(TRP_PEER *peer, void *cookie)
730 TRPS_INSTANCE *trps=talloc_get_type_abort(cookie, TRPS_INSTANCE);
732 if (TRP_SUCCESS!=trps_wildcard_route_req(trps, trp_peer_get_servicename(peer)))
733 tr_err("tr_send_wildcard: error sending wildcard route request.");
736 /* starts a trpc thread to connect to server:port */
737 TRP_RC tr_trpc_initiate(TRPS_INSTANCE *trps, TRP_PEER *peer, struct event *ev)
739 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
740 TRPC_INSTANCE *trpc=NULL;
741 TRP_CONNECTION *conn=NULL;
742 struct trpc_thread_data *thread_data=NULL;
745 tr_debug("tr_trpc_initiate entered");
746 trpc=trpc_new(tmp_ctx);
748 tr_crit("tr_trpc_initiate: could not allocate TRPC_INSTANCE.");
752 tr_debug("tr_trpc_initiate: allocated trpc");
754 conn=trp_connection_new(trpc);
756 tr_crit("tr_trpc_initiate: could not allocate TRP_CONNECTION.");
761 trpc_set_conn(trpc, conn);
762 trpc_set_server(trpc, talloc_strdup(trpc, trp_peer_get_server(peer)));
763 trpc_set_port(trpc, trp_peer_get_port(peer));
764 trpc_set_gssname(trpc, trp_peer_dup_servicename(peer));
765 tr_debug("tr_trpc_initiate: allocated connection");
768 thread_data=talloc(trpc, struct trpc_thread_data);
769 if (thread_data==NULL) {
770 tr_crit("tr_trpc_initiate: could not allocate struct trpc_thread_data.");
774 thread_data->trpc=trpc;
775 thread_data->trps=trps;
777 trps_add_trpc(trps, trpc); /* must add before starting thread */
778 pthread_create(trp_connection_get_thread(conn), NULL, tr_trpc_thread, thread_data);
780 tr_debug("tr_trpc_initiate: started trpc thread");
784 talloc_free(tmp_ctx);
788 /* Add local routes to the route table. */
789 TRP_RC tr_add_local_routes(TRPS_INSTANCE *trps, TR_CFG *cfg)
791 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
792 TR_IDP_REALM *cur=NULL;
793 TRP_ROUTE **local_routes=NULL;
796 char *trust_router_name=talloc_asprintf(tmp_ctx, "%s:%d", cfg->internal->hostname, cfg->internal->trps_port);
798 /* determine our trust router name */
799 if (trust_router_name==NULL)
802 for (cur=cfg->ctable->idp_realms; cur!=NULL; cur=cur->next) {
803 local_routes=tr_make_local_routes(tmp_ctx, cur, trust_router_name, &n_routes);
804 for (ii=0; ii<n_routes; ii++)
805 trps_add_route(trps, local_routes[ii]);
807 talloc_free(local_routes);
812 talloc_free(tmp_ctx);
816 /* decide how often to attempt to connect to a peer */
817 static int tr_conn_attempt_due(TRPS_INSTANCE *trps, TRP_PEER *peer, struct timespec *when)
819 return 1; /* currently make an attempt every cycle */
822 /* open missing connections to peers */
823 TRP_RC tr_connect_to_peers(TRPS_INSTANCE *trps, struct event *ev)
825 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
826 TRP_PTABLE_ITER *iter=trp_ptable_iter_new(tmp_ctx);
828 struct timespec curtime={0,0};
831 if (clock_gettime(CLOCK_REALTIME, &curtime)) {
832 tr_err("tr_connect_to_peers: failed to read time.");
837 for (peer=trp_ptable_iter_first(iter, trps->ptable);
839 peer=trp_ptable_iter_next(iter))
841 if (trps_find_trpc(trps, peer)==NULL) {
842 TR_NAME *label=trp_peer_get_label(peer);
843 tr_debug("tr_connect_to_peers: %.*s missing connection.",
844 label->len, label->buf);
845 /* has it been long enough since we last tried? */
846 if (tr_conn_attempt_due(trps, peer, &curtime)) {
847 trp_peer_set_last_conn_attempt(peer, &curtime); /* we are trying again now */
848 if (tr_trpc_initiate(trps, peer, ev)!=TRP_SUCCESS) {
849 tr_err("tr_connect_to_peers: unable to initiate TRP connection to %s:%u.",
850 trp_peer_get_server(peer),
851 trp_peer_get_port(peer));
859 trp_ptable_iter_free(iter);
860 talloc_free(tmp_ctx);
865 /* Called by the config manager after a change to the active configuration.
866 * Updates configuration of objects that do not know about the config manager. */
867 void tr_config_changed(TR_CFG *new_cfg, void *cookie)
869 TR_INSTANCE *tr=talloc_get_type_abort(cookie, TR_INSTANCE);
870 TRPS_INSTANCE *trps=tr->trps;
871 char *table_str=NULL;
873 tr->cfgwatch->poll_interval.tv_sec=new_cfg->internal->cfg_poll_interval;
874 tr->cfgwatch->poll_interval.tv_usec=0;
876 tr->cfgwatch->settling_time.tv_sec=new_cfg->internal->cfg_settling_time;
877 tr->cfgwatch->settling_time.tv_usec=0;
879 /* These need to be updated */
880 tr->tids->hostname = new_cfg->internal->hostname;
881 tr->mons->hostname = new_cfg->internal->hostname;
883 /* Update the authorized monitoring gss names */
884 if (tr->mons->authorized_gss_names) {
885 tr_debug("tr_config_changed: freeing tr->mons->authorized_gss_names");
886 tr_gss_names_free(tr->mons->authorized_gss_names);
888 if (new_cfg->internal->monitoring_credentials != NULL) {
889 tr->mons->authorized_gss_names = tr_gss_names_dup(tr->mons, new_cfg->internal->monitoring_credentials);
891 tr->mons->authorized_gss_names = tr_gss_names_new(tr->mons);
893 if (tr->mons->authorized_gss_names == NULL) {
894 tr_err("tr_config_changed: Error configuring monitoring credentials");
897 trps_set_connect_interval(trps, new_cfg->internal->trp_connect_interval);
898 trps_set_update_interval(trps, new_cfg->internal->trp_update_interval);
899 trps_set_sweep_interval(trps, new_cfg->internal->trp_sweep_interval);
900 trps_set_ctable(trps, new_cfg->ctable);
901 trps_set_ptable(trps, new_cfg->peers);
902 trps_set_peer_status_callback(trps, tr_peer_status_change, (void *)trps);
903 trps_clear_rtable(trps); /* should we do this every time??? */
904 tr_add_local_routes(trps, new_cfg); /* should we do this every time??? */
905 trps_update_active_routes(trps); /* find new routes */
906 trps_update(trps, TRP_UPDATE_TRIGGERED); /* send any triggered routes */
907 tr_print_config(new_cfg);
908 table_str=tr_trps_route_table_to_str(NULL, trps);
909 if (table_str!=NULL) {
911 talloc_free(table_str);
913 table_str=tr_trps_comm_table_to_str(NULL, trps);
914 if (table_str!=NULL) {
916 talloc_free(table_str);