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.
12 * 2. Redistributions in binary form must reproduce the above copyright
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
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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 if (NULL == peer_gssname) {
281 /* This should not happen, we should not be able to establish a connection if we do not
282 * know their GSS name */
283 tr_err("tr_trps_process_mq: incoming connection from unknown GSS name reported.");
285 peer = trps_get_peer_by_gssname(trps, peer_gssname); /* get the peer record */
286 tmp = tr_name_strdup(peer_gssname); /* get the name as a null-terminated string */
288 tr_err("tr_trps_process_mq: incoming connection from unknown peer (%s) reported.", tmp);
290 trp_peer_set_incoming_status(peer, PEER_CONNECTED);
291 tr_info("tr_trps_process_mq: incoming connection from %s established.", tmp);
296 else if (0==strcmp(s, TR_MQMSG_TRPS_DISCONNECTED)) {
297 TRP_CONNECTION *conn=talloc_get_type_abort(tr_mq_msg_get_payload(msg), TRP_CONNECTION);
298 TR_NAME *peer_gssname=trp_connection_get_peer(conn);
300 if (NULL == peer_gssname) {
301 /* If the GSS auth failed, then we don't know the peer's GSS name. */
302 tr_info("tr_trps_process_mq: incoming connection failed to auth.");
304 /* We do know the peer's GSS name, see if we recognize it. */
305 peer = trps_get_peer_by_gssname(trps, peer_gssname); /* get the peer record */
306 tmp = tr_name_strdup(peer_gssname); /* get the name as a null-terminated string */
308 tr_err("tr_trps_process_mq: incoming connection from unknown peer (%.*s) lost.", tmp);
310 trp_peer_set_incoming_status(peer, PEER_DISCONNECTED);
311 tr_trps_cleanup_conn(trps, conn);
312 tr_info("tr_trps_process_mq: incoming connection from %s lost.", tmp);
317 else if (0==strcmp(s, TR_MQMSG_TRPC_CONNECTED)) {
318 TR_NAME *svcname=(TR_NAME *)tr_mq_msg_get_payload(msg);
319 if (NULL == svcname) {
320 /* This should not happen because we shouldn't be reporting a connection unless we were
321 * able to auth the service name. */
322 tr_err("tr_trps_process_mq: outgoing connection established to unknown GSS service name.");
324 peer = trps_get_peer_by_servicename(trps, svcname);
325 tmp = tr_name_strdup(svcname);
327 tr_err("tr_trps_process_mq: outgoing connection to unknown peer (%s) reported.", tmp);
329 trp_peer_set_outgoing_status(peer, PEER_CONNECTED);
330 tr_info("tr_trps_process_mq: outgoing connection to %s established.", tmp);
335 else if (0==strcmp(s, TR_MQMSG_TRPC_DISCONNECTED)) {
336 TRPC_INSTANCE *trpc=talloc_get_type_abort(tr_mq_msg_get_payload(msg), TRPC_INSTANCE);
337 TR_NAME *svcname=trpc_get_gssname(trpc);
338 if (NULL == svcname) {
339 tr_info("tr_trps_process_mq: outgoing connection to unknown GSS service name lost.");
341 peer = trps_get_peer_by_servicename(trps, svcname);
342 tmp = tr_name_strdup(svcname);
344 tr_err("tr_trps_process_mq: outgoing connection to unknown peer (%s) lost.", tmp);
346 trp_peer_set_outgoing_status(peer, PEER_DISCONNECTED);
347 tr_info("tr_trps_process_mq: outgoing connection to %s lost.", tmp);
348 tr_trps_cleanup_trpc(trps, trpc);
354 else if (0==strcmp(s, TR_MQMSG_MSG_RECEIVED)) {
355 if (trps_handle_tr_msg(trps, tr_mq_msg_get_payload(msg))!=TRP_SUCCESS)
356 tr_err("tr_trps_process_mq: error handling message.");
359 tr_notice("tr_trps_process_mq: unknown message '%s' received.", tr_mq_msg_get_message(msg));
362 msg=trps_mq_pop(trps);
366 static void tr_trps_update(int listener, short event, void *arg)
368 struct tr_trps_event_cookie *cookie=talloc_get_type_abort(arg, struct tr_trps_event_cookie);
369 TRPS_INSTANCE *trps=cookie->trps;
370 struct event *ev=cookie->ev;
372 tr_debug("tr_trps_update: sending scheduled route/community updates.");
373 trps_update(trps, TRP_UPDATE_SCHEDULED);
374 event_add(ev, &(trps->update_interval));
375 tr_debug("tr_trps_update: update interval=%d", trps->update_interval.tv_sec);
378 static void tr_trps_sweep(int listener, short event, void *arg)
380 struct tr_trps_event_cookie *cookie=talloc_get_type_abort(arg, struct tr_trps_event_cookie);
381 TRPS_INSTANCE *trps=cookie->trps;
382 struct event *ev=cookie->ev;
383 char *table_str=NULL;
385 tr_debug("tr_trps_sweep: sweeping routes.");
386 trps_sweep_routes(trps);
387 tr_debug("tr_trps_sweep: sweeping communities.");
388 trps_sweep_ctable(trps);
389 table_str=tr_trps_route_table_to_str(NULL, trps);
390 if (table_str!=NULL) {
392 talloc_free(table_str);
395 table_str=tr_trps_comm_table_to_str(NULL, trps);
396 if (table_str!=NULL) {
398 talloc_free(table_str);
400 /* schedule the event to run again */
401 event_add(ev, &(trps->sweep_interval));
404 static void tr_connection_update(int listener, short event, void *arg)
406 struct tr_trps_event_cookie *cookie=talloc_get_type_abort(arg, struct tr_trps_event_cookie);
407 TRPS_INSTANCE *trps=cookie->trps;
408 struct event *ev=cookie->ev;
410 tr_debug("tr_connection_update: checking peer connections.");
411 tr_connect_to_peers(trps, ev);
412 /* schedule the event to run again */
413 event_add(ev, &(trps->connect_interval));
416 static int tr_trps_events_destructor(void *obj)
418 TR_TRPS_EVENTS *ev=talloc_get_type_abort(obj, TR_TRPS_EVENTS);
420 event_free(ev->mq_ev);
421 if (ev->connect_ev!=NULL)
422 event_free(ev->connect_ev);
423 if (ev->update_ev!=NULL)
424 event_free(ev->update_ev);
425 if (ev->sweep_ev!=NULL)
426 event_free(ev->sweep_ev);
429 static TR_TRPS_EVENTS *tr_trps_events_new(TALLOC_CTX *mem_ctx)
431 TR_TRPS_EVENTS *ev=talloc(mem_ctx, TR_TRPS_EVENTS);
433 ev->listen_ev=talloc(ev, struct tr_socket_event);
438 if (ev->listen_ev==NULL) {
442 talloc_set_destructor((void *)ev, tr_trps_events_destructor);
448 static void tr_trps_events_free(TR_TRPS_EVENTS *ev)
453 /* Configure the trps instance and set up its event handler.
454 * Fills in trps_ev, which should be allocated by caller. */
455 TRP_RC tr_trps_event_init(struct event_base *base, TR_INSTANCE *tr)
457 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
458 struct tr_socket_event *listen_ev=NULL;
459 struct tr_trps_event_cookie *trps_cookie=NULL;
460 struct tr_trps_event_cookie *connection_cookie=NULL;
461 struct tr_trps_event_cookie *update_cookie=NULL;
462 struct tr_trps_event_cookie *sweep_cookie=NULL;
463 struct timeval zero_time={0,0};
464 TRP_RC retval=TRP_ERROR;
467 if (tr->events != NULL) {
468 tr_notice("tr_trps_event_init: tr->events was not null. Freeing before reallocating..");
469 tr_trps_events_free(tr->events);
472 tr->events=tr_trps_events_new(tmp_ctx);
473 if (tr->events == NULL) {
474 tr_debug("tr_trps_event_init: unable to allocate event handles.");
479 /* get convenient handles */
480 listen_ev=tr->events->listen_ev;
482 /* Create the cookie for callbacks. It will end up part of the trps context, so it will
483 * be cleaned up when trps is freed by talloc_free. */
484 trps_cookie=talloc(tr->events, struct tr_trps_event_cookie);
485 if (trps_cookie == NULL) {
486 tr_debug("tr_trps_event_init: Unable to allocate trps_cookie.");
488 tr_trps_events_free(tr->events);
492 trps_cookie->trps=tr->trps;
493 trps_cookie->cfg_mgr=tr->cfg_mgr;
495 /* get a trps listener */
496 listen_ev->n_sock_fd=trps_get_listener(tr->trps,
499 tr->cfg_mgr->active->internal->hostname,
500 tr->cfg_mgr->active->internal->trps_port,
504 if (listen_ev->n_sock_fd==0) {
505 tr_crit("Error opening TRP server socket.");
507 tr_trps_events_free(tr->events);
512 /* Set up events for the sockets */
513 for (ii=0; ii<listen_ev->n_sock_fd; ii++) {
514 listen_ev->ev[ii]=event_new(base,
515 listen_ev->sock_fd[ii],
519 event_add(listen_ev->ev[ii], NULL);
522 /* now set up message queue processing event, only triggered by
524 tr->events->mq_ev=event_new(base,
529 tr_mq_set_notify_cb(tr->trps->mq, tr_trps_mq_cb, tr->events->mq_ev);
531 /* now set up the peer connection timer event */
532 connection_cookie=talloc(tr->events, struct tr_trps_event_cookie);
533 if (connection_cookie == NULL) {
534 tr_debug("tr_trps_event_init: Unable to allocate connection_cookie.");
536 tr_trps_events_free(tr->events);
540 connection_cookie->trps=tr->trps;
541 connection_cookie->cfg_mgr=tr->cfg_mgr;
542 tr->events->connect_ev=event_new(base, -1, EV_TIMEOUT, tr_connection_update, (void *)connection_cookie);
543 connection_cookie->ev=tr->events->connect_ev; /* in case it needs to frob the event */
544 /* The first time, do this immediately. Thereafter, it will retrigger every trps->connect_interval */
545 event_add(tr->events->connect_ev, &zero_time);
547 /* now set up the route update timer event */
548 update_cookie=talloc(tr->events, struct tr_trps_event_cookie);
549 if (update_cookie == NULL) {
550 tr_debug("tr_trps_event_init: Unable to allocate update_cookie.");
552 tr_trps_events_free(tr->events);
556 update_cookie->trps=tr->trps;
557 update_cookie->cfg_mgr=tr->cfg_mgr;
558 tr->events->update_ev=event_new(base, -1, EV_TIMEOUT, tr_trps_update, (void *)update_cookie);
559 update_cookie->ev=tr->events->update_ev; /* in case it needs to frob the event */
560 event_add(tr->events->update_ev, &(tr->trps->update_interval));
562 /* now set up the route table sweep timer event */
563 sweep_cookie=talloc(tr->events, struct tr_trps_event_cookie);
564 if (sweep_cookie == NULL) {
565 tr_debug("tr_trps_event_init: Unable to allocate sweep_cookie.");
567 tr_trps_events_free(tr->events);
571 sweep_cookie->trps=tr->trps;
572 sweep_cookie->cfg_mgr=tr->cfg_mgr;
573 tr->events->sweep_ev=event_new(base, -1, EV_TIMEOUT, tr_trps_sweep, (void *)sweep_cookie);
574 sweep_cookie->ev=tr->events->sweep_ev; /* in case it needs to frob the event */
575 event_add(tr->events->sweep_ev, &(tr->trps->sweep_interval));
577 talloc_steal(tr, tr->events);
581 talloc_free(tmp_ctx);
585 /* data passed to thread */
586 struct trpc_thread_data {
592 * Thread for handling TRPC (outgoing) connections
594 * Opens a connection to a peer. If successful, notifies the trps thread by
595 * posting a TR_MQMSG_TRPC_CONNECTED message to the trps message queue.
596 * It then waits for messages on trpc->mq. Normally these will be TR_MQMSG_TRPC_SEND
597 * messages, which this thread forwards to the peer. If its connection is lost or
598 * a TR_MQMSG_ABORT message is received on trpc->mq, the thread sends a
599 * TR_MQMSG_TRPC_DISCONNECTED message to the trps thread, then cleans up and
602 * The trps may continue queueing messages for this client even when the
603 * connection is down. To prevent the queue from growing endlessly, this thread
604 * should clear its queue after failed connection attempts.
606 static void *tr_trpc_thread(void *arg)
608 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
609 struct trpc_thread_data *thread_data=talloc_get_type_abort(arg, struct trpc_thread_data);
610 TRPC_INSTANCE *trpc=thread_data->trpc;
611 TRPS_INSTANCE *trps=thread_data->trps;
614 const char *msg_type=NULL;
615 char *encoded_msg=NULL;
616 TR_NAME *peer_gssname=NULL;
617 struct timespec wait_until = {0};
620 tr_debug("tr_trpc_thread: started");
622 /* Try to make the outgoing connection */
623 rc=trpc_connect(trpc);
624 if (rc!=TRP_SUCCESS) {
625 tr_notice("tr_trpc_thread: failed to initiate connection to %s:%d.",
626 trpc_get_server(trpc),
627 trpc_get_port(trpc));
628 trpc_mq_clear(trpc); /* clear the queue even though we did not connect */
630 /* Retrieve the GSS name used by the peer for authentication */
631 peer_gssname=trp_connection_get_peer(trpc_get_conn(trpc));
632 if (peer_gssname==NULL) {
633 tr_err("tr_trpc_thread: could not duplicate peer_gssname.");
634 talloc_free(tmp_ctx);
637 tr_debug("tr_trpc_thread: connected to peer %.*s",
638 peer_gssname->len, peer_gssname->buf);
640 msg= tr_mq_msg_new(tmp_ctx, TR_MQMSG_TRPC_CONNECTED);
641 tr_mq_msg_set_payload(msg, (void *)tr_dup_name(peer_gssname), tr_free_name_helper);
643 tr_err("tr_trpc_thread: error allocating TR_MQ_MSG");
644 talloc_free(tmp_ctx);
647 trps_mq_add(trps, msg); /* steals msg context */
650 /* Loop until we get an abort message or until the connection is lost. */
652 /* Wait up to 10 minutes for a message to be queued to send to the peer.
653 * Log a warning if we go longer than that, but don't give up. */
654 if (tr_mq_pop_timeout(10 * 60, &wait_until) != 0) {
655 tr_err("tr_trpc_thread: unable to set abort timeout");
656 break; /* immediately exit the loop, don't go through cleanup */
659 /* Pop a message from the queue. */
660 msg = trpc_mq_pop(trpc, &wait_until);
662 msg_type = tr_mq_msg_get_message(msg);
663 if (0 == strcmp(msg_type, TR_MQMSG_ABORT)) {
664 tr_debug("tr_trpc_thread: received abort message from main thread.");
666 } else if (0 == strcmp(msg_type, TR_MQMSG_TRPC_SEND)) {
667 encoded_msg = tr_mq_msg_get_payload(msg);
668 if (encoded_msg == NULL)
669 tr_notice("tr_trpc_thread: null outgoing TRP message.");
671 rc = trpc_send_msg(trpc, encoded_msg);
672 if (rc == TRP_SUCCESS) {
673 tr_debug("tr_trpc_thread: sent message.");
675 tr_notice("tr_trpc_thread: trpc_send_msg failed.");
676 /* Assume this means we lost the connection. */
681 tr_notice("tr_trpc_thread: unknown message '%s' received.", msg_type);
685 tr_warning("tr_trpc_thread: no outgoing messages to %.*s for 10 minutes",
686 peer_gssname->len, peer_gssname->buf);
691 /* Send a DISCONNECTED message to the main thread */
692 msg= tr_mq_msg_new(tmp_ctx, TR_MQMSG_TRPC_DISCONNECTED);
693 tr_mq_msg_set_payload(msg, (void *)trpc, NULL); /* do not pass a free routine */
695 /* can't notify main thread */
696 tr_err("tr_trpc_thread: error allocating TR_MQ_MSG");
698 trps_mq_add(trps, msg);
701 talloc_free(tmp_ctx);
702 tr_debug("tr_trpc_thread: thread terminating.");
707 * convert an IDP realm into routing table entries.
709 * @param mem_ctx talloc context for the result
710 * @param realm IDP realm whose routes should be generated
711 * @param trust_router hostname for TRP connections to us
712 * @param trust_router_port TRP port of our trust router
713 * @param n_routes (output) the number of routes in the returned array
714 * @return Pointer to an array of pointers to routes
716 static TRP_ROUTE **tr_make_local_routes(TALLOC_CTX *mem_ctx,
718 const char *trust_router,
719 int trust_router_port,
722 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
724 TRP_ROUTE *new_entry=NULL;
725 TRP_ROUTE **entries=NULL;
726 size_t n_comms=0, ii=0;
730 if ((realm==NULL) || (realm->origin!=TR_REALM_LOCAL))
734 for (comm=realm->apcs, n_comms=0; comm!=NULL; comm=comm->next,n_comms++) {}
736 entries=talloc_array(tmp_ctx, TRP_ROUTE *, n_comms);
737 for (comm=realm->apcs,ii=0; comm!=NULL; comm=comm->next, ii++) {
738 new_entry=trp_route_new(entries);
739 if (new_entry==NULL) {
740 tr_crit("tr_make_local_routes: unable to allocate entry.");
741 talloc_free(entries);
744 trp_route_set_comm(new_entry, tr_dup_name(comm->id));
745 trp_route_set_realm(new_entry, tr_dup_name(realm->realm_id));
746 trp_route_set_peer(new_entry, tr_new_name("")); /* no peer, it's us */
747 trp_route_set_metric(new_entry, 0);
748 trp_route_set_trust_router(new_entry, tr_new_name(trust_router));
749 trp_route_set_trust_router_port(new_entry, trust_router_port);
750 trp_route_set_next_hop(new_entry, tr_new_name("")); /* no next hop */
751 trp_route_set_next_hop_port(new_entry, -1); /* no next hop */
752 trp_route_set_local(new_entry, 1);
753 entries[ii]=new_entry;
756 talloc_steal(mem_ctx, entries);
759 talloc_free(tmp_ctx);
763 void tr_peer_status_change(TRP_PEER *peer, void *cookie)
765 TRPS_INSTANCE *trps=talloc_get_type_abort(cookie, TRPS_INSTANCE);
767 if (TRP_SUCCESS!=trps_wildcard_route_req(trps, trp_peer_get_servicename(peer)))
768 tr_err("tr_send_wildcard: error sending wildcard route request.");
771 /* starts a trpc thread to connect to server:port */
772 TRP_RC tr_trpc_initiate(TRPS_INSTANCE *trps, TRP_PEER *peer, struct event *ev)
774 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
775 TRPC_INSTANCE *trpc=NULL;
776 TRP_CONNECTION *conn=NULL;
777 struct trpc_thread_data *thread_data=NULL;
780 tr_debug("tr_trpc_initiate entered");
781 trpc=trpc_new(tmp_ctx);
783 tr_crit("tr_trpc_initiate: could not allocate TRPC_INSTANCE.");
787 tr_debug("tr_trpc_initiate: allocated trpc");
789 conn=trp_connection_new(trpc);
791 tr_crit("tr_trpc_initiate: could not allocate TRP_CONNECTION.");
796 trpc_set_conn(trpc, conn);
797 trpc_set_server(trpc, talloc_strdup(trpc, trp_peer_get_server(peer)));
798 trpc_set_port(trpc, trp_peer_get_port(peer));
799 trpc_set_gssname(trpc, trp_peer_dup_servicename(peer));
800 tr_debug("tr_trpc_initiate: allocated connection");
803 thread_data=talloc(trpc, struct trpc_thread_data);
804 if (thread_data==NULL) {
805 tr_crit("tr_trpc_initiate: could not allocate struct trpc_thread_data.");
809 thread_data->trpc=trpc;
810 thread_data->trps=trps;
812 trps_add_trpc(trps, trpc); /* must add before starting thread */
813 pthread_create(trp_connection_get_thread(conn), NULL, tr_trpc_thread, thread_data);
815 tr_debug("tr_trpc_initiate: started trpc thread");
819 talloc_free(tmp_ctx);
823 /* Add local routes to the route table. */
824 TRP_RC tr_add_local_routes(TRPS_INSTANCE *trps, TR_CFG *cfg)
826 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
827 TR_IDP_REALM *cur=NULL;
828 TRP_ROUTE **local_routes=NULL;
832 for (cur=cfg->ctable->idp_realms; cur!=NULL; cur=cur->next) {
833 local_routes= tr_make_local_routes(tmp_ctx, cur, cfg->internal->hostname, cfg->internal->trps_port, &n_routes);
834 for (ii=0; ii<n_routes; ii++)
835 trps_add_route(trps, local_routes[ii]);
837 talloc_free(local_routes);
842 talloc_free(tmp_ctx);
846 /* decide how often to attempt to connect to a peer */
847 static int tr_conn_attempt_due(TRPS_INSTANCE *trps, TRP_PEER *peer, struct timespec *when)
849 return 1; /* currently make an attempt every cycle */
852 /* open missing connections to peers */
853 TRP_RC tr_connect_to_peers(TRPS_INSTANCE *trps, struct event *ev)
855 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
856 TRP_PTABLE_ITER *iter=trp_ptable_iter_new(tmp_ctx);
858 struct timespec curtime={0,0};
861 if (clock_gettime(CLOCK_REALTIME, &curtime)) {
862 tr_err("tr_connect_to_peers: failed to read time.");
867 for (peer=trp_ptable_iter_first(iter, trps->ptable);
869 peer=trp_ptable_iter_next(iter))
871 if (trps_find_trpc(trps, peer)==NULL) {
872 TR_NAME *label=trp_peer_get_label(peer);
873 tr_debug("tr_connect_to_peers: %.*s missing connection.",
874 label->len, label->buf);
875 /* has it been long enough since we last tried? */
876 if (tr_conn_attempt_due(trps, peer, &curtime)) {
877 trp_peer_set_last_conn_attempt(peer, &curtime); /* we are trying again now */
878 if (tr_trpc_initiate(trps, peer, ev)!=TRP_SUCCESS) {
879 tr_err("tr_connect_to_peers: unable to initiate TRP connection to %s:%u.",
880 trp_peer_get_server(peer),
881 trp_peer_get_port(peer));
889 trp_ptable_iter_free(iter);
890 talloc_free(tmp_ctx);
895 /* Called by the config manager after a change to the active configuration.
896 * Updates configuration of objects that do not know about the config manager. */
897 void tr_config_changed(TR_CFG *new_cfg, void *cookie)
899 TR_INSTANCE *tr=talloc_get_type_abort(cookie, TR_INSTANCE);
900 TRPS_INSTANCE *trps=tr->trps;
901 char *table_str=NULL;
903 tr->cfgwatch->poll_interval.tv_sec=new_cfg->internal->cfg_poll_interval;
904 tr->cfgwatch->poll_interval.tv_usec=0;
906 tr->cfgwatch->settling_time.tv_sec=new_cfg->internal->cfg_settling_time;
907 tr->cfgwatch->settling_time.tv_usec=0;
909 /* These need to be updated */
910 tr->tids->hostname = new_cfg->internal->hostname;
911 tr->mons->hostname = new_cfg->internal->hostname;
913 /* Update the authorized monitoring gss names */
914 if (tr->mons->authorized_gss_names) {
915 tr_debug("tr_config_changed: freeing tr->mons->authorized_gss_names");
916 tr_gss_names_free(tr->mons->authorized_gss_names);
918 if (new_cfg->internal->monitoring_credentials != NULL) {
919 tr->mons->authorized_gss_names = tr_gss_names_dup(tr->mons, new_cfg->internal->monitoring_credentials);
921 tr->mons->authorized_gss_names = tr_gss_names_new(tr->mons);
923 if (tr->mons->authorized_gss_names == NULL) {
924 tr_err("tr_config_changed: Error configuring monitoring credentials");
927 trps_set_connect_interval(trps, new_cfg->internal->trp_connect_interval);
928 trps_set_update_interval(trps, new_cfg->internal->trp_update_interval);
929 trps_set_sweep_interval(trps, new_cfg->internal->trp_sweep_interval);
930 trps_set_ctable(trps, new_cfg->ctable);
931 trps_set_ptable(trps, new_cfg->peers);
932 trps_set_peer_status_callback(trps, tr_peer_status_change, (void *)trps);
933 trps_clear_rtable(trps); /* should we do this every time??? */
934 tr_add_local_routes(trps, new_cfg); /* should we do this every time??? */
935 trps_update_active_routes(trps); /* find new routes */
936 trps_update(trps, TRP_UPDATE_TRIGGERED); /* send any triggered routes */
937 tr_print_config(new_cfg);
938 table_str=tr_trps_route_table_to_str(NULL, trps);
939 if (table_str!=NULL) {
941 talloc_free(table_str);
943 table_str=tr_trps_comm_table_to_str(NULL, trps);
944 if (table_str!=NULL) {
946 talloc_free(table_str);