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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17 * may be used to endorse or promote products derived from this software
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20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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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.
47 #include <trust_router/tr_name.h>
48 #include <trp_internal.h>
50 #include <trp_ptable.h>
51 #include <trp_rtable.h>
55 static int trps_destructor(void *object)
57 TRPS_INSTANCE *trps=talloc_get_type_abort(object, TRPS_INSTANCE);
58 if (trps->rtable!=NULL)
59 trp_rtable_free(trps->rtable);
63 TRPS_INSTANCE *trps_new (TALLOC_CTX *mem_ctx)
65 TRPS_INSTANCE *trps=talloc(mem_ctx, TRPS_INSTANCE);
72 trps->update_interval=(struct timeval){0,0};
73 trps->sweep_interval=(struct timeval){0,0};
76 trps->mq=tr_mq_new(trps);
78 /* failed to allocate mq */
84 if (trps_init_rtable(trps) != TRP_SUCCESS) {
85 /* failed to allocate rtable */
90 talloc_set_destructor((void *)trps, trps_destructor);
95 /* create a new route table, first discarding an old one if necessary */
96 TRP_RC trps_init_rtable(TRPS_INSTANCE *trps)
98 if (trps->rtable != NULL) {
99 trp_rtable_free(trps->rtable);
103 trps->rtable=trp_rtable_new();
104 if (trps->rtable==NULL) {
110 void trps_clear_rtable(TRPS_INSTANCE *trps)
112 trp_rtable_clear(trps->rtable);
115 void trps_free (TRPS_INSTANCE *trps)
121 TR_MQ_MSG *trps_mq_pop(TRPS_INSTANCE *trps)
123 return tr_mq_pop(trps->mq);
126 void trps_mq_add(TRPS_INSTANCE *trps, TR_MQ_MSG *msg)
128 tr_mq_add(trps->mq, msg);
131 unsigned int trps_get_connect_interval(TRPS_INSTANCE *trps)
133 return trps->connect_interval.tv_sec;
136 void trps_set_connect_interval(TRPS_INSTANCE *trps, unsigned int interval)
138 trps->connect_interval.tv_sec=interval;
139 trps->connect_interval.tv_usec=0;
142 unsigned int trps_get_update_interval(TRPS_INSTANCE *trps)
144 return trps->update_interval.tv_sec;
147 void trps_set_update_interval(TRPS_INSTANCE *trps, unsigned int interval)
149 trps->update_interval.tv_sec=interval;
150 trps->update_interval.tv_usec=0;
153 unsigned int trps_get_sweep_interval(TRPS_INSTANCE *trps)
155 return trps->sweep_interval.tv_sec;
158 void trps_set_sweep_interval(TRPS_INSTANCE *trps, unsigned int interval)
160 trps->sweep_interval.tv_sec=interval;
161 trps->sweep_interval.tv_usec=0;
164 void trps_set_ctable(TRPS_INSTANCE *trps, TR_COMM_TABLE *comm)
166 if (trps->ctable!=NULL)
167 tr_comm_table_free(trps->ctable);
171 void trps_set_ptable(TRPS_INSTANCE *trps, TRP_PTABLE *ptable)
173 if (trps->ptable!=NULL)
174 trp_ptable_free(trps->ptable);
178 void trps_set_peer_status_callback(TRPS_INSTANCE *trps, void (*cb)(TRP_PEER *, void *), void *cookie)
180 TRP_PTABLE_ITER *iter=NULL;
182 if (trps->ptable==NULL)
185 iter=trp_ptable_iter_new(NULL);
186 for (peer=trp_ptable_iter_first(iter, trps->ptable); peer!=NULL; peer=trp_ptable_iter_next(iter))
187 trp_peer_set_conn_status_cb(peer, cb, cookie);
188 trp_ptable_iter_free(iter);
191 /* Get the label peers will know us by - needs to match trp_peer_get_label() output.
192 * There is no get, only dup, because we don't store the label except when requested. */
193 TR_NAME *trps_dup_label(TRPS_INSTANCE *trps)
195 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
197 char *s=talloc_asprintf(tmp_ctx, "%s:%u", trps->hostname, trps->port);
200 label=tr_new_name(s);
203 talloc_free(tmp_ctx);
207 TRPC_INSTANCE *trps_find_trpc(TRPS_INSTANCE *trps, TRP_PEER *peer)
209 TRPC_INSTANCE *cur=NULL;
211 TR_NAME *peer_servicename=trp_peer_get_servicename(peer);
213 for (cur=trps->trpc; cur!=NULL; cur=trpc_get_next(cur)) {
214 name=trpc_get_gssname(cur);
215 if ((name!=NULL) && (0==tr_name_cmp(peer_servicename, name))) {
222 void trps_add_connection(TRPS_INSTANCE *trps, TRP_CONNECTION *new)
224 if (trps->conn==NULL)
227 trp_connection_append(trps->conn, new);
229 talloc_steal(trps, new);
232 /* ok to call more than once; guarantees connection no longer in the list.
233 * Caller is responsible for freeing the removed element afterwards. */
234 void trps_remove_connection(TRPS_INSTANCE *trps, TRP_CONNECTION *remove)
236 trps->conn=trp_connection_remove(trps->conn, remove);
239 void trps_add_trpc(TRPS_INSTANCE *trps, TRPC_INSTANCE *trpc)
241 if (trps->trpc==NULL)
244 trpc_append(trps->trpc, trpc);
246 talloc_steal(trps, trpc);
249 /* ok to call more than once; guarantees trpc no longer in the list.
250 * Caller is responsible for freeing the removed element afterwards. */
251 void trps_remove_trpc(TRPS_INSTANCE *trps, TRPC_INSTANCE *remove)
253 trps->trpc=trpc_remove(trps->trpc, remove);
256 TRP_RC trps_send_msg(TRPS_INSTANCE *trps, TRP_PEER *peer, const char *msg)
258 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
259 TR_MQ_MSG *mq_msg=NULL;
262 TRPC_INSTANCE *trpc=NULL;
264 /* get the connection for this peer */
265 trpc=trps_find_trpc(trps, peer);
266 /* instead, let's let that happen and then clear the queue when an attempt to
269 tr_warning("trps_send_msg: skipping message queued for missing TRP client entry.");
271 mq_msg=tr_mq_msg_new(tmp_ctx, TR_MQMSG_TRPC_SEND, TR_MQ_PRIO_NORMAL);
272 msg_dup=talloc_strdup(mq_msg, msg); /* get local copy in mq_msg context */
273 tr_mq_msg_set_payload(mq_msg, msg_dup, NULL); /* no need for a free() func */
274 trpc_mq_add(trpc, mq_msg);
277 talloc_free(tmp_ctx);
281 /* Listens on all interfaces */
282 static int trps_listen(TRPS_INSTANCE *trps, int port)
287 struct addrinfo *ai=NULL;
288 struct addrinfo *ai_head=NULL;
289 struct addrinfo hints={.ai_flags=AI_PASSIVE,
290 .ai_family=AF_UNSPEC,
291 .ai_socktype=SOCK_STREAM,
292 .ai_protocol=IPPROTO_TCP};
295 port_str=talloc_asprintf(NULL, "%d", port);
296 if (port_str==NULL) {
297 tr_debug("trps_listen: unable to allocate port.");
300 rc=getaddrinfo(NULL, port_str, &hints, &ai_head);
301 talloc_free(port_str);
303 /* TODO: listen on all ports */
304 for (ai=ai_head; ai!=NULL; ai=ai->ai_next) {
305 if (ai->ai_family==AF_INET6) {
306 ai=talloc_memdup(NULL, ai, sizeof(struct addrinfo)); /* get a permanent copy of this */
310 freeaddrinfo(ai_head);
313 tr_debug("trps_listen: no addresses available for listening.");
317 if (0 > (conn = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol))) {
318 tr_debug("trps_listen: unable to open socket.");
324 setsockopt(conn, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval));
325 /* setsockopt(conn, IPPROTO_IPV6, IPV6_V6ONLY, &optval, sizeof(optval)); */
327 rc=bind(conn, ai->ai_addr, ai->ai_addrlen);
332 tr_debug("trps_listen: unable to bind to socket (%s).", strerror_r(errno, errmsg, 255));
337 if (0>listen(conn, 512)) {
338 tr_debug("trps_listen: unable to listen on bound socket.");
343 tr_debug("trps_listen: TRP Server listening on port %d", port);
347 /* get the currently selected route if available */
348 TRP_ROUTE *trps_get_route(TRPS_INSTANCE *trps, TR_NAME *comm, TR_NAME *realm, TR_NAME *peer)
350 return trp_rtable_get_entry(trps->rtable, comm, realm, peer);
353 TRP_ROUTE *trps_get_selected_route(TRPS_INSTANCE *trps, TR_NAME *comm, TR_NAME *realm)
355 tr_debug("trps_get_selected_route: entered. trps=%p, comm=%p, realm=%p", trps, comm, realm);
356 return trp_rtable_get_selected_entry(trps->rtable, comm, realm);
359 /* copy the result if you want to keep it */
360 TR_NAME *trps_get_next_hop(TRPS_INSTANCE *trps, TR_NAME *comm, TR_NAME *realm)
362 TRP_ROUTE *route=trps_get_selected_route(trps, comm, realm);
366 return trp_route_get_next_hop(route);
370 /* mark a route as retracted */
371 static void trps_retract_route(TRPS_INSTANCE *trps, TRP_ROUTE *entry)
373 trp_route_set_metric(entry, TRP_METRIC_INFINITY);
374 trp_route_set_triggered(entry, 1);
377 /* is this route retracted? */
378 static int trps_route_retracted(TRPS_INSTANCE *trps, TRP_ROUTE *entry)
380 return (trp_metric_is_infinite(trp_route_get_metric(entry)));
383 static TRP_RC trps_read_message(TRPS_INSTANCE *trps, TRP_CONNECTION *conn, TR_MSG **msg)
388 TRP_PEER *peer=NULL; /* entry in the peer table */
389 TR_NAME *conn_peer=NULL; /* name from the TRP_CONN, which comes from the gss context */
391 tr_debug("trps_read_message: started");
392 if (err = gsscon_read_encrypted_token(trp_connection_get_fd(conn),
393 *(trp_connection_get_gssctx(conn)),
396 tr_debug("trps_read_message: error");
402 tr_debug("trps_read_message: message received, %u bytes.", (unsigned) buflen);
403 tr_debug("trps_read_message: %.*s", buflen, buf);
405 *msg=tr_msg_decode(buf, buflen);
410 conn_peer=trp_connection_get_peer(conn);
411 if (conn_peer==NULL) {
412 tr_err("trps_read_message: connection has no peer name");
416 peer=trps_get_peer_by_gssname(trps, conn_peer);
418 tr_err("trps_read_message: could not find peer with gssname=%s", trp_connection_get_gssname(conn));
422 /* verify we received a message we support, otherwise drop it now */
423 switch (tr_msg_get_msg_type(*msg)) {
425 trp_upd_set_peer(tr_msg_get_trp_upd(*msg), tr_dup_name(conn_peer));
426 trp_upd_set_next_hop(tr_msg_get_trp_upd(*msg), trp_peer_get_server(peer), 0); /* TODO: 0 should be the configured TID port */
430 trp_req_set_peer(tr_msg_get_trp_req(*msg), tr_dup_name(conn_peer));
434 tr_debug("trps_read_message: received unsupported message from %.*s", conn_peer->len, conn_peer->buf);
435 tr_msg_free_decoded(*msg);
437 return TRP_UNSUPPORTED;
443 int trps_get_listener(TRPS_INSTANCE *trps,
444 TRPS_MSG_FUNC msg_handler,
445 TRP_AUTH_FUNC auth_handler,
446 const char *hostname,
452 if (0 > (listen = trps_listen(trps, port))) {
454 if (0 == strerror_r(errno, errbuf, 256)) {
455 tr_debug("trps_get_listener: Error opening port %d: %s.", port, errbuf);
457 tr_debug("trps_get_listener: Unknown error openining port %d.", port);
462 /* opening port succeeded */
463 tr_debug("trps_get_listener: Opened port %d.", port);
465 /* make this socket non-blocking */
466 if (0 != fcntl(listen, F_SETFL, O_NONBLOCK)) {
467 tr_debug("trps_get_listener: Error setting O_NONBLOCK.");
474 /* store the caller's request handler & cookie */
475 trps->msg_handler = msg_handler;
476 trps->auth_handler = auth_handler;
477 trps->hostname = talloc_strdup(trps, hostname);
479 trps->cookie = cookie;
485 TRP_RC trps_authorize_connection(TRPS_INSTANCE *trps, TRP_CONNECTION *conn)
487 /* try to establish a GSS context */
488 if (0!=trp_connection_auth(conn, trps->auth_handler, trps->cookie)) {
489 tr_notice("trps_authorize_connection: failed to authorize connection");
490 trp_connection_close(conn);
493 tr_notice("trps_authorize_connection: authorized connection");
497 void trps_handle_connection(TRPS_INSTANCE *trps, TRP_CONNECTION *conn)
502 /* loop as long as the connection exists */
503 while (trp_connection_get_status(conn)==TRP_CONNECTION_UP) {
504 rc=trps_read_message(trps, conn, &msg);
507 trps->msg_handler(trps, conn, msg); /* send the TR_MSG off to the callback */
511 trp_connection_close(conn);
515 tr_debug("trps_handle_connection: trps_read_message failed (%d)", rc);
519 tr_debug("trps_handle_connection: connection closed.");
522 /* TODO: check realm/comm, now part of the update instead of inforec */
523 static TRP_RC trps_validate_update(TRPS_INSTANCE *trps, TRP_UPD *upd)
526 tr_notice("trps_validate_update: null TRP update.");
530 if (trp_upd_get_realm(upd)==NULL) {
531 tr_notice("trps_validate_update: received TRP update without realm.");
535 if (trp_upd_get_comm(upd)==NULL) {
536 tr_notice("trps_validate_update: received TRP update without community.");
540 if (trp_upd_get_inforec(upd)==NULL) {
541 tr_notice("trps_validate_update: received TRP update with no info records.");
545 if (trp_upd_get_peer(upd)==NULL) {
546 tr_notice("trps_validate_update: received TRP update without origin peer information.");
554 /* ensure that the update could be accepted if feasible */
555 static TRP_RC trps_validate_inforec(TRPS_INSTANCE *trps, TRP_INFOREC *rec)
557 switch(trp_inforec_get_type(rec)) {
558 case TRP_INFOREC_TYPE_ROUTE:
559 if ((trp_inforec_get_trust_router(rec)==NULL)
560 || (trp_inforec_get_next_hop(rec)==NULL)) {
561 tr_debug("trps_validate_inforec: missing record info.");
565 /* check for valid metric */
566 if (trp_metric_is_invalid(trp_inforec_get_metric(rec))) {
567 tr_debug("trps_validate_inforec: invalid metric (%u).", trp_inforec_get_metric(rec));
571 /* check for valid interval */
572 if (trp_inforec_get_interval(rec)==TRP_INTERVAL_INVALID) {
573 tr_debug("trps_validate_inforec: invalid interval.");
578 case TRP_INFOREC_TYPE_COMMUNITY:
579 /* TODO: validate community updates */
583 tr_notice("trps_validate_inforec: unsupported record type.");
584 return TRP_UNSUPPORTED;
590 /* link cost to a peer */
591 static unsigned int trps_cost(TRPS_INSTANCE *trps, TR_NAME *peer)
596 static unsigned int trps_advertised_metric(TRPS_INSTANCE *trps, TR_NAME *comm, TR_NAME *realm, TR_NAME *peer)
598 TRP_ROUTE *entry=trp_rtable_get_entry(trps->rtable, comm, realm, peer);
600 return TRP_METRIC_INFINITY;
601 return trp_route_get_metric(entry) + trps_cost(trps, peer);
604 static int trps_check_feasibility(TRPS_INSTANCE *trps, TR_NAME *realm, TR_NAME *comm, TRP_INFOREC *rec)
606 unsigned int rec_metric=trp_inforec_get_metric(rec);
607 unsigned int new_metric=0;
608 unsigned int current_metric=0;
609 TR_NAME *next_hop=NULL;
611 /* we check these in the validation stage, but just in case... */
612 if (trp_metric_is_invalid(rec_metric))
615 /* retractions (aka infinite metrics) are always feasible */
616 if (trp_metric_is_infinite(rec_metric))
619 /* updates from our current next hop are always feasible*/
620 next_hop=trps_get_next_hop(trps, comm, realm);
622 && (0==tr_name_cmp(next_hop,trp_inforec_get_next_hop(rec)))) {
627 /* compare the existing metric we advertise to what we would advertise
628 * if we accept this update */
629 current_metric=trps_advertised_metric(trps, comm, realm, trp_inforec_get_next_hop(rec));
630 new_metric=rec_metric + trps_cost(trps, trp_inforec_get_next_hop(rec));
631 if (new_metric <= current_metric)
637 /* uses memory pointed to by *ts, also returns that value. On error, its contents are {0,0} */
638 static struct timespec *trps_compute_expiry(TRPS_INSTANCE *trps, unsigned int interval, struct timespec *ts)
640 const unsigned int small_factor=3; /* how many intervals we wait before expiring */
641 if (0!=clock_gettime(CLOCK_REALTIME, ts)) {
642 tr_err("trps_compute_expiry: could not read realtime clock.");
646 ts->tv_sec += small_factor*interval;
650 static TRP_RC trps_accept_update(TRPS_INSTANCE *trps, TRP_UPD *upd, TRP_INFOREC *rec)
652 TRP_ROUTE *entry=NULL;
654 entry=trp_rtable_get_entry(trps->rtable,
655 trp_upd_get_comm(upd),
656 trp_upd_get_realm(upd),
657 trp_inforec_get_next_hop(rec));
659 entry=trp_route_new(NULL);
661 tr_err("trps_accept_update: unable to allocate new entry.");
665 trp_route_set_comm(entry, trp_upd_dup_comm(upd));
666 trp_route_set_realm(entry, trp_upd_dup_realm(upd));
667 trp_route_set_peer(entry, trp_upd_dup_peer(upd));
668 trp_route_set_trust_router(entry, trp_inforec_dup_trust_router(rec));
669 trp_route_set_next_hop(entry, trp_inforec_dup_next_hop(rec));
670 /* TODO: pass next hop port (now defaults to TID_PORT) --jlr */
671 if ((trp_route_get_comm(entry)==NULL)
672 ||(trp_route_get_realm(entry)==NULL)
673 ||(trp_route_get_peer(entry)==NULL)
674 ||(trp_route_get_trust_router(entry)==NULL)
675 ||(trp_route_get_next_hop(entry)==NULL)) {
676 /* at least one field could not be allocated */
677 tr_err("trps_accept_update: unable to allocate all fields for entry.");
678 trp_route_free(entry);
681 trp_rtable_add(trps->rtable, entry);
684 /* We now have an entry in the table, whether it's new or not. Update metric and expiry, unless
685 * the metric is infinity. An infinite metric can only occur here if we just retracted an existing
686 * route (we never accept retractions as new routes), so there is no risk of leaving the expiry
687 * time unset on a new route entry. */
688 tr_debug("trps_accept_update: accepting route update.");
689 trp_route_set_metric(entry, trp_inforec_get_metric(rec));
690 trp_route_set_interval(entry, trp_inforec_get_interval(rec));
692 /* check whether the trust router has changed */
693 if (0!=tr_name_cmp(trp_route_get_trust_router(entry),
694 trp_inforec_get_trust_router(rec))) {
695 /* The name changed. Set this route as triggered. */
696 tr_debug("trps_accept_update: trust router for route changed.");
697 trp_route_set_triggered(entry, 1);
698 trp_route_set_trust_router(entry, trp_inforec_dup_trust_router(rec)); /* frees old name */
700 if (!trps_route_retracted(trps, entry)) {
701 tr_debug("trps_accept_update: route not retracted, setting expiry timer.");
702 trp_route_set_expiry(entry, trps_compute_expiry(trps,
703 trp_route_get_interval(entry),
704 trp_route_get_expiry(entry)));
710 static TRP_RC trps_handle_inforec_route(TRPS_INSTANCE *trps, TRP_UPD *upd, TRP_INFOREC *rec)
712 TRP_ROUTE *route=NULL;
715 /* determine feasibility */
716 feas=trps_check_feasibility(trps, trp_upd_get_realm(upd), trp_upd_get_comm(upd), rec);
717 tr_debug("trps_handle_update: record feasibility=%d", feas);
719 /* do we have an existing route? */
720 route=trps_get_route(trps,
721 trp_upd_get_comm(upd),
722 trp_upd_get_realm(upd),
723 trp_upd_get_peer(upd));
725 /* there was a route table entry already */
726 tr_debug("trps_handle_updates: route entry already exists.");
728 /* Update is feasible. Accept it. */
729 trps_accept_update(trps, upd, rec);
731 /* Update is infeasible. Ignore it unless the trust router has changed. */
732 if (0!=tr_name_cmp(trp_route_get_trust_router(route),
733 trp_inforec_get_trust_router(rec))) {
734 /* the trust router associated with the route has changed, treat update as a retraction */
735 trps_retract_route(trps, route);
739 /* No existing route table entry. Ignore it unless it is feasible and not a retraction. */
740 tr_debug("trps_handle_update: no route entry exists yet.");
741 if (feas && trp_metric_is_finite(trp_inforec_get_metric(rec)))
742 trps_accept_update(trps, upd, rec);
748 static int trps_name_in_provenance(TR_NAME *name, json_t *prov)
751 TR_NAME *this_name=NULL;
755 return 0; /* no provenance list, so it has no names in it */
757 /* now check to see if name is in the provenance */
758 for (ii=0; ii<json_array_size(prov); ii++) {
759 s=json_string_value(json_array_get(prov, ii));
761 tr_debug("trps_name_in_provenance: empty entry in provenance list.");
765 this_name=tr_new_name(s);
766 if (this_name==NULL) {
767 tr_debug("trps_name_in_provenance: unable to allocate name.");
770 if (0==tr_name_cmp(name, this_name)) {
771 tr_free_name(this_name);
774 tr_free_name(this_name);
779 static TR_COMM *trps_create_new_comm(TALLOC_CTX *mem_ctx, TR_NAME *comm_id, TRP_INFOREC *rec)
781 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
782 TR_COMM *comm=tr_comm_new(tmp_ctx);
785 tr_debug("trps_create_new_comm: unable to allocate new community.");
788 /* fill in the community with info */
789 tr_comm_set_id(comm, tr_dup_name(comm_id));
790 if (tr_comm_get_id(comm)==NULL) {
791 tr_debug("trps_create_new_comm: unable to allocate community name.");
795 tr_comm_set_type(comm, trp_inforec_get_comm_type(rec));
796 if (trp_inforec_get_apcs(rec)!=NULL) {
797 tr_comm_set_apcs(comm, tr_apc_dup(tmp_ctx, trp_inforec_get_apcs(rec)));
798 if (tr_comm_get_apcs(comm)==NULL) {
799 tr_debug("trps_create_new_comm: unable to allocate APC list.");
804 if (trp_inforec_get_owner_realm(rec)!=NULL) {
805 tr_comm_set_owner_realm(comm, tr_dup_name(trp_inforec_get_owner_realm(rec)));
806 if (tr_comm_get_owner_realm(comm)==NULL) {
807 tr_debug("trps_create_new_comm: unable to allocate owner realm name.");
812 if (trp_inforec_get_owner_contact(rec)!=NULL) {
813 tr_comm_set_owner_contact(comm, tr_dup_name(trp_inforec_get_owner_contact(rec)));
814 if (tr_comm_get_owner_contact(comm)==NULL) {
815 tr_debug("trps_create_new_comm: unable to allocate owner contact.");
820 comm->expiration_interval=trp_inforec_get_exp_interval(rec);
821 talloc_steal(mem_ctx, comm);
824 talloc_free(tmp_ctx);
828 static TR_RP_REALM *trps_create_new_rp_realm(TALLOC_CTX *mem_ctx, TR_NAME *realm_id, TRP_INFOREC *rec)
830 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
831 TR_RP_REALM *rp=tr_rp_realm_new(tmp_ctx);
834 tr_debug("trps_create_new_rp_realm: unable to allocate new realm.");
837 /* fill in the realm */
838 tr_rp_realm_set_id(rp, tr_dup_name(realm_id));
839 if (tr_rp_realm_get_id(rp)==NULL) {
840 tr_debug("trps_create_new_rp_realm: unable to allocate realm name.");
844 talloc_steal(mem_ctx, rp);
847 talloc_free(tmp_ctx);
851 static TR_IDP_REALM *trps_create_new_idp_realm(TALLOC_CTX *mem_ctx, TR_NAME *realm_id, TRP_INFOREC *rec)
853 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
854 TR_IDP_REALM *idp=tr_idp_realm_new(tmp_ctx);
857 tr_debug("trps_create_new_idp_realm: unable to allocate new realm.");
860 /* fill in the realm */
861 tr_idp_realm_set_id(idp, tr_dup_name(realm_id));
862 if (tr_idp_realm_get_id(idp)==NULL) {
863 tr_debug("trps_create_new_idp_realm: unable to allocate realm name.");
867 if (trp_inforec_get_apcs(rec)!=NULL) {
868 tr_idp_realm_set_apcs(idp, tr_apc_dup(tmp_ctx, trp_inforec_get_apcs(rec)));
869 if (tr_idp_realm_get_apcs(idp)==NULL) {
870 tr_debug("trps_create_new_idp_realm: unable to allocate APC list.");
875 idp->origin=TR_REALM_DISCOVERED;
877 talloc_steal(mem_ctx, idp);
880 talloc_free(tmp_ctx);
884 static TRP_RC trps_handle_inforec_comm(TRPS_INSTANCE *trps, TRP_UPD *upd, TRP_INFOREC *rec)
886 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
887 TR_NAME *comm_id=trp_upd_get_comm(upd);
888 TR_NAME *realm_id=trp_upd_get_realm(upd);
889 TR_NAME *origin_id=NULL;
890 TR_NAME *our_peer_label=NULL;
892 TR_RP_REALM *rp_realm=NULL;
893 TR_IDP_REALM *idp_realm=NULL;
894 struct timespec expiry={0,0};
897 if ((comm_id==NULL) || (realm_id==NULL))
900 origin_id=trp_inforec_dup_origin(rec);
904 /* see whether we want to add this */
905 our_peer_label=trps_dup_label(trps);
906 if (our_peer_label==NULL) {
907 tr_debug("trps_handle_inforec_comm: unable to allocate peer label.");
911 if (trps_name_in_provenance(our_peer_label, trp_inforec_get_provenance(rec)))
912 tr_debug("trps_handle_inforec_comm: rejecting community inforec to avoid loop.");
914 /* no loop occurring, accept the update */
915 comm=tr_comm_table_find_comm(trps->ctable, comm_id);
917 tr_debug("trps_handle_inforec_comm: unknown community %.*s in inforec, creating it.",
918 comm_id->len, comm_id->buf);
919 comm=trps_create_new_comm(tmp_ctx, comm_id, rec);
921 tr_debug("trps_handle_inforec_comm: unable to create new community.");
924 tr_comm_table_add_comm(trps->ctable, comm);
926 /* TODO: see if other comm data match the new inforec and update or complain */
928 trps_compute_expiry(trps, trp_inforec_get_interval(rec), &expiry);
929 if ((expiry.tv_sec==0)&&(expiry.tv_nsec==0))
932 switch (trp_inforec_get_role(rec)) {
934 rp_realm=tr_rp_realm_lookup(trps->ctable->rp_realms, realm_id);
935 if (rp_realm==NULL) {
936 tr_debug("trps_handle_inforec_comm: unknown RP realm %.*s in inforec, creating it.",
937 realm_id->len, realm_id->buf);
938 rp_realm=trps_create_new_rp_realm(tmp_ctx, realm_id, rec);
939 if (rp_realm==NULL) {
940 tr_debug("trps_handle_inforec_comm: unable to create new RP realm.");
941 /* we may leave an unused community in the table, but it will only last until
942 * the next table sweep if it does not get any realms before that happens */
945 tr_comm_table_add_rp_realm(trps->ctable, rp_realm);
947 /* TODO: if realm existed, see if data match the new inforec and update or complain */
948 tr_comm_add_rp_realm(trps->ctable, comm, rp_realm, trp_inforec_get_interval(rec), trp_inforec_get_provenance(rec), &expiry);
949 tr_debug("trps_handle_inforec_comm: added RP realm %.*s to comm %.*s (origin %.*s).",
950 realm_id->len, realm_id->buf,
951 comm_id->len, comm_id->buf,
952 origin_id->len, origin_id->buf);
955 idp_realm=tr_idp_realm_lookup(trps->ctable->idp_realms, realm_id);
956 if (idp_realm==NULL) {
957 tr_debug("trps_handle_inforec_comm: unknown IDP realm %.*s in inforec, creating it.",
958 realm_id->len, realm_id->buf);
959 idp_realm=trps_create_new_idp_realm(tmp_ctx, realm_id, rec);
960 if (idp_realm==NULL) {
961 tr_debug("trps_handle_inforec_comm: unable to create new IDP realm.");
962 /* we may leave an unused community in the table, but it will only last until
963 * the next table sweep if it does not get any realms before that happens */
966 tr_comm_table_add_idp_realm(trps->ctable, idp_realm);
968 /* TODO: if realm existed, see if data match the new inforec and update or complain */
969 tr_comm_add_idp_realm(trps->ctable, comm, idp_realm, trp_inforec_get_interval(rec), trp_inforec_get_provenance(rec), &expiry);
970 tr_debug("trps_handle_inforec_comm: added IDP realm %.*s to comm %.*s (origin %.*s).",
971 realm_id->len, realm_id->buf,
972 comm_id->len, comm_id->buf,
973 origin_id->len, origin_id->buf);
976 tr_debug("trps_handle_inforec_comm: unable to add realm.");
984 if (our_peer_label!=NULL)
985 tr_free_name(our_peer_label);
987 tr_free_name(origin_id);
988 talloc_free(tmp_ctx);
992 static TRP_RC trps_handle_update(TRPS_INSTANCE *trps, TRP_UPD *upd)
994 TRP_INFOREC *rec=NULL;
996 if (trps_validate_update(trps, upd) != TRP_SUCCESS) {
997 tr_notice("trps_handle_update: received invalid TRP update.");
1001 for (rec=trp_upd_get_inforec(upd); rec!=NULL; rec=trp_inforec_get_next(rec)) {
1002 /* validate/sanity check the record update */
1003 if (trps_validate_inforec(trps, rec) != TRP_SUCCESS) {
1004 tr_notice("trps_handle_update: invalid inforec in TRP update, discarding entire update.");
1009 for (rec=trp_upd_get_inforec(upd); rec!=NULL; rec=trp_inforec_get_next(rec)) {
1010 switch (trp_inforec_get_type(rec)) {
1011 case TRP_INFOREC_TYPE_ROUTE:
1012 tr_debug("trps_handle_update: handling route inforec.");
1013 if (TRP_SUCCESS!=trps_handle_inforec_route(trps, upd, rec))
1014 tr_notice("trps_handle_update: error handling route inforec.");
1016 case TRP_INFOREC_TYPE_COMMUNITY:
1017 tr_debug("trps_handle_update: handling community inforec.");
1018 if (TRP_SUCCESS!=trps_handle_inforec_comm(trps, upd, rec))
1019 tr_notice("trps_handle_update: error handling community inforec.");
1022 tr_notice("trps_handle_update: unsupported inforec in TRP update.");
1029 static TRP_RC trps_validate_request(TRPS_INSTANCE *trps, TRP_REQ *req)
1032 tr_notice("trps_validate_request: null TRP request.");
1036 if (trp_req_get_comm(req)==NULL) {
1037 tr_notice("trps_validate_request: received TRP request with null community.");
1041 if (trp_req_get_realm(req)==NULL) {
1042 tr_notice("trps_validate_request: received TRP request with null realm.");
1046 if (trp_req_get_peer(req)==NULL) {
1047 tr_notice("trps_validate_request: received TRP request without origin peer information.");
1054 /* choose the best route to comm/realm, optionally excluding routes to a particular peer */
1055 static TRP_ROUTE *trps_find_best_route(TRPS_INSTANCE *trps,
1058 TR_NAME *exclude_peer)
1060 TRP_ROUTE **entry=NULL;
1061 TRP_ROUTE *best=NULL;
1064 unsigned int kk_min=0;
1065 unsigned int min_metric=TRP_METRIC_INFINITY;
1067 entry=trp_rtable_get_realm_entries(trps->rtable, comm, realm, &n_entry);
1068 for (kk=0; kk<n_entry; kk++) {
1069 if (trp_route_get_metric(entry[kk]) < min_metric) {
1070 if ((exclude_peer==NULL) || (0!=tr_name_cmp(trp_route_get_peer(entry[kk]),
1073 min_metric=trp_route_get_metric(entry[kk]);
1077 if (trp_metric_is_finite(min_metric))
1084 /* TODO: think this through more carefully. At least ought to add hysteresis
1085 * to avoid flapping between routers or routes. */
1086 TRP_RC trps_update_active_routes(TRPS_INSTANCE *trps)
1088 size_t n_comm=0, ii=0;
1089 TR_NAME **comm=trp_rtable_get_comms(trps->rtable, &n_comm);
1090 size_t n_realm=0, jj=0;
1091 TR_NAME **realm=NULL;
1092 TRP_ROUTE *best_route=NULL, *cur_route=NULL;
1093 unsigned int best_metric=0, cur_metric=0;
1095 for (ii=0; ii<n_comm; ii++) {
1096 realm=trp_rtable_get_comm_realms(trps->rtable, comm[ii], &n_realm);
1097 for (jj=0; jj<n_realm; jj++) {
1098 best_route=trps_find_best_route(trps, comm[ii], realm[jj], NULL);
1099 if (best_route==NULL)
1100 best_metric=TRP_METRIC_INFINITY;
1102 best_metric=trp_route_get_metric(best_route);
1104 cur_route=trps_get_selected_route(trps, comm[ii], realm[jj]);
1105 if (cur_route!=NULL) {
1106 cur_metric=trp_route_get_metric(cur_route);
1107 if ((best_metric < cur_metric) && (trp_metric_is_finite(best_metric))) {
1108 /* The new route has a lower metric than the previous, and is finite. Accept. */
1109 trp_route_set_selected(cur_route, 0);
1110 trp_route_set_selected(best_route, 1);
1111 } else if (!trp_metric_is_finite(cur_metric)) /* rejects infinite or invalid metrics */
1112 trp_route_set_selected(cur_route, 0);
1113 } else if (trp_metric_is_finite(best_metric)) {
1114 trp_route_set_selected(best_route, 1);
1119 realm=NULL; n_realm=0;
1123 comm=NULL; n_comm=0;
1128 /* true if curtime >= expiry */
1129 static int trps_expired(struct timespec *expiry, struct timespec *curtime)
1131 return ((curtime->tv_sec > expiry->tv_sec)
1132 || ((curtime->tv_sec == expiry->tv_sec)
1133 &&(curtime->tv_nsec >= expiry->tv_nsec)));
1136 /* Sweep for expired routes. For each expired route, if its metric is infinite, the route is flushed.
1137 * If its metric is finite, the metric is set to infinite and the route's expiration time is updated. */
1138 TRP_RC trps_sweep_routes(TRPS_INSTANCE *trps)
1140 struct timespec sweep_time={0,0};
1141 TRP_ROUTE **entry=NULL;
1145 /* use a single time for the entire sweep */
1146 if (0!=clock_gettime(CLOCK_REALTIME, &sweep_time)) {
1147 tr_err("trps_sweep_routes: could not read realtime clock.");
1148 sweep_time.tv_sec=0;
1149 sweep_time.tv_nsec=0;
1153 entry=trp_rtable_get_entries(trps->rtable, &n_entry); /* must talloc_free *entry */
1155 /* loop over the entries */
1156 for (ii=0; ii<n_entry; ii++) {
1157 if (!trp_route_is_local(entry[ii]) && trps_expired(trp_route_get_expiry(entry[ii]), &sweep_time)) {
1158 tr_debug("trps_sweep_routes: route expired.");
1159 if (!trp_metric_is_finite(trp_route_get_metric(entry[ii]))) {
1161 tr_debug("trps_sweep_routes: metric was infinity, flushing route.");
1162 trp_rtable_remove(trps->rtable, entry[ii]); /* entry[ii] is no longer valid */
1165 /* set metric to infinity and reset timer */
1166 tr_debug("trps_sweep_routes: setting metric to infinity and resetting expiry.");
1167 trp_route_set_metric(entry[ii], TRP_METRIC_INFINITY);
1168 trp_route_set_expiry(entry[ii], trps_compute_expiry(trps,
1169 trp_route_get_interval(entry[ii]),
1170 trp_route_get_expiry(entry[ii])));
1180 static char *timespec_to_str(struct timespec *ts)
1185 if (localtime_r(&(ts->tv_sec), &tm)==NULL)
1188 s=malloc(40); /* long enough to contain strftime result */
1192 if (strftime(s, 40, "%F %T", &tm)==0) {
1200 /* Sweep for expired communities/realms/memberships. */
1201 TRP_RC trps_sweep_ctable(TRPS_INSTANCE *trps)
1203 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
1204 struct timespec sweep_time={0,0};
1205 TR_COMM_MEMB *memb=NULL;
1206 TR_COMM_ITER *iter=NULL;
1207 TRP_RC rc=TRP_ERROR;
1209 /* use a single time for the entire sweep */
1210 if (0!=clock_gettime(CLOCK_REALTIME, &sweep_time)) {
1211 tr_err("trps_sweep_ctable: could not read realtime clock.");
1212 sweep_time.tv_sec=0;
1213 sweep_time.tv_nsec=0;
1217 /* iterate all memberships */
1218 iter=tr_comm_iter_new(tmp_ctx);
1220 tr_err("trps_sweep_ctable: unable to allocate iterator.");
1224 for (memb=tr_comm_memb_iter_all_first(iter, trps->ctable);
1226 memb=tr_comm_memb_iter_all_next(iter)) {
1227 if (tr_comm_memb_get_origin(memb)==NULL)
1228 continue; /* do not expire local entries */
1230 if (tr_comm_memb_is_expired(memb, &sweep_time)) {
1231 if (tr_comm_memb_get_times_expired(memb)>0) {
1232 /* Already expired once; flush. */
1233 tr_debug("trps_sweep_ctable: flushing expired community membership (%.*s in %.*s, origin %.*s, expired %s).",
1234 tr_comm_memb_get_realm_id(memb)->len, tr_comm_memb_get_realm_id(memb)->buf,
1235 tr_comm_get_id(tr_comm_memb_get_comm(memb))->len, tr_comm_get_id(tr_comm_memb_get_comm(memb))->buf,
1236 tr_comm_memb_get_origin(memb)->len, tr_comm_memb_get_origin(memb)->buf,
1237 timespec_to_str(tr_comm_memb_get_expiry(memb)));
1238 tr_comm_table_remove_memb(trps->ctable, memb);
1239 tr_comm_memb_free(memb);
1241 /* This is the first expiration. Note this and reset the expiry time. */
1242 tr_comm_memb_expire(memb);
1243 trps_compute_expiry(trps, tr_comm_memb_get_interval(memb), tr_comm_memb_get_expiry(memb));
1244 tr_debug("trps_sweep_ctable: community membership expired, resetting expiry to %s (%.*s in %.*s, origin %.*s).",
1245 timespec_to_str(tr_comm_memb_get_expiry(memb)),
1246 tr_comm_memb_get_realm_id(memb)->len, tr_comm_memb_get_realm_id(memb)->buf,
1247 tr_comm_get_id(tr_comm_memb_get_comm(memb))->len, tr_comm_get_id(tr_comm_memb_get_comm(memb))->buf,
1248 tr_comm_memb_get_origin(memb)->len, tr_comm_memb_get_origin(memb)->buf);
1253 /* get rid of any unreferenced realms, etc */
1254 tr_comm_table_sweep(trps->ctable);
1257 talloc_free(tmp_ctx);
1262 static unsigned int trps_metric_add(unsigned int m1, unsigned int m2)
1264 if (trp_metric_is_invalid(m1) || trp_metric_is_invalid(m2))
1265 return TRP_METRIC_INVALID;
1267 if (trp_metric_is_infinite(m1) || trp_metric_is_infinite(m2))
1268 return TRP_METRIC_INFINITY;
1270 if (trp_metric_is_finite(m1+m2))
1273 return TRP_METRIC_INFINITY;
1276 /* convert an rentry into a new trp update info record */
1277 static TRP_INFOREC *trps_route_to_inforec(TALLOC_CTX *mem_ctx, TRPS_INSTANCE *trps, TRP_ROUTE *route)
1279 TRP_INFOREC *rec=trp_inforec_new(mem_ctx, TRP_INFOREC_TYPE_ROUTE);
1280 unsigned int linkcost=0;
1283 if (trp_route_is_local(route))
1286 linkcost=trp_peer_get_linkcost(trps_get_peer_by_gssname(trps,
1287 trp_route_get_peer(route)));
1290 /* Note that we leave the next hop empty since the recipient fills that in.
1291 * This is where we add the link cost (currently always 1) to the next peer. */
1292 if ((trp_inforec_set_trust_router(rec, trp_route_dup_trust_router(route)) != TRP_SUCCESS)
1293 ||(trp_inforec_set_metric(rec,
1294 trps_metric_add(trp_route_get_metric(route),
1295 linkcost)) != TRP_SUCCESS)
1296 ||(trp_inforec_set_interval(rec, trps_get_update_interval(trps)) != TRP_SUCCESS)) {
1297 tr_err("trps_route_to_inforec: error creating route update.");
1305 static TRP_UPD *trps_route_to_upd(TALLOC_CTX *mem_ctx, TRPS_INSTANCE *trps, TRP_ROUTE *route)
1307 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
1308 TRP_UPD *upd=trp_upd_new(tmp_ctx);
1309 TRP_INFOREC *rec=NULL;
1312 tr_err("trps_route_to_upd: could not create update message.");
1315 trp_upd_set_realm(upd, trp_route_dup_realm(route));
1316 if (trp_upd_get_realm(upd)==NULL) {
1317 tr_err("trps_route_to_upd: could not copy realm.");
1318 upd=NULL; /* it's still in tmp_ctx, so it will be freed */
1321 trp_upd_set_comm(upd, trp_route_dup_comm(route));
1322 if (trp_upd_get_comm(upd)==NULL) {
1323 tr_err("trps_route_to_upd: could not copy comm.");
1324 upd=NULL; /* it's still in tmp_ctx, so it will be freed */
1327 rec=trps_route_to_inforec(tmp_ctx, trps, route);
1329 tr_err("trps_route_to_upd: could not create route info record for realm %.*s in comm %.*s.",
1330 trp_route_get_realm(route)->len, trp_route_get_realm(route)->buf,
1331 trp_route_get_comm(route)->len, trp_route_get_comm(route)->buf);
1332 upd=NULL; /* it's till in tmp_ctx, so it will be freed */
1335 trp_upd_add_inforec(upd, rec);
1338 talloc_steal(mem_ctx, upd);
1341 talloc_free(tmp_ctx);
1345 /* select the correct route to comm/realm to be announced to peer */
1346 static TRP_ROUTE *trps_select_realm_update(TRPS_INSTANCE *trps, TR_NAME *comm, TR_NAME *realm, TR_NAME *peer_gssname)
1350 /* Take the currently selected route unless it is through the peer we're sending the update to.
1351 * I.e., enforce the split horizon rule. */
1352 route=trp_rtable_get_selected_entry(trps->rtable, comm, realm);
1354 /* No selected route, this should only happen if the only route has been retracted,
1355 * in which case we do not want to advertise it. */
1358 tr_debug("trps_select_realm_update: %s vs %s", peer_gssname->buf,
1359 trp_route_get_peer(route)->buf);
1360 if (0==tr_name_cmp(peer_gssname, trp_route_get_peer(route))) {
1361 tr_debug("trps_select_realm_update: matched, finding alternate route");
1362 /* the selected entry goes through the peer we're reporting to, choose an alternate */
1363 route=trps_find_best_route(trps, comm, realm, peer_gssname);
1364 if ((route==NULL) || (!trp_metric_is_finite(trp_route_get_metric(route))))
1365 return NULL; /* don't advertise a nonexistent or retracted route */
1370 /* Add TRP_UPD msgs to the updates GPtrArray. Caller needs to arrange for these to be freed. */
1371 static TRP_RC trps_select_route_updates_for_peer(TALLOC_CTX *mem_ctx,
1373 TRPS_INSTANCE *trps,
1374 TR_NAME *peer_gssname,
1378 TR_NAME **comm=trp_rtable_get_comms(trps->rtable, &n_comm);
1379 TR_NAME **realm=NULL;
1382 TRP_ROUTE *best=NULL;
1388 for (ii=0; ii<n_comm; ii++) {
1389 realm=trp_rtable_get_comm_realms(trps->rtable, comm[ii], &n_realm);
1390 for (jj=0; jj<n_realm; jj++) {
1391 best=trps_select_realm_update(trps, comm[ii], realm[jj], peer_gssname);
1392 /* If we found a route, add it to the list. If triggered!=0, then only
1393 * add triggered routes. */
1394 if ((best!=NULL) && ((!triggered) || trp_route_is_triggered(best))) {
1395 upd=trps_route_to_upd(mem_ctx, trps, best);
1397 tr_err("trps_select_route_updates_for_peer: unable to create update message.");
1400 g_ptr_array_add(updates, upd);
1416 static TRP_INFOREC *trps_memb_to_inforec(TALLOC_CTX *mem_ctx, TRPS_INSTANCE *trps, TR_COMM_MEMB *memb)
1418 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
1419 TRP_INFOREC *rec=NULL;
1425 comm=tr_comm_memb_get_comm(memb);
1426 rec=trp_inforec_new(tmp_ctx, TRP_INFOREC_TYPE_COMMUNITY);
1430 if (TRP_SUCCESS!=trp_inforec_set_comm_type(rec, tr_comm_get_type(comm))) {
1435 if (TRP_SUCCESS!=trp_inforec_set_role(rec, tr_comm_memb_get_role(memb))) {
1440 if ((NULL!=tr_comm_get_apcs(comm)) &&
1441 ( (TRP_SUCCESS!=trp_inforec_set_apcs(rec,
1442 tr_apc_dup(rec, tr_comm_get_apcs(comm)))) ||
1443 (NULL==trp_inforec_get_apcs(rec)))) {
1448 if ((NULL!=tr_comm_get_owner_realm(comm)) &&
1449 ( (TRP_SUCCESS!=trp_inforec_set_owner_realm(rec, tr_dup_name(tr_comm_get_owner_realm(comm)))) ||
1450 (NULL==trp_inforec_get_owner_realm(rec)))) {
1455 if ((NULL!=tr_comm_get_owner_contact(comm)) &&
1456 ( (TRP_SUCCESS!=trp_inforec_set_owner_contact(rec, tr_dup_name(tr_comm_get_owner_contact(comm)))) ||
1457 (NULL==trp_inforec_get_owner_contact(rec)))) {
1462 if ((NULL!=tr_comm_memb_get_provenance(memb)) &&
1463 (TRP_SUCCESS!=trp_inforec_set_provenance(rec, tr_comm_memb_get_provenance(memb)))) {
1468 if (TRP_SUCCESS!=trp_inforec_set_interval(rec, trps_get_update_interval(trps))) {
1474 talloc_steal(mem_ctx, rec);
1477 talloc_free(tmp_ctx);
1481 /* construct an update with all the inforecs for comm/realm/role to be sent to peer */
1482 static TRP_UPD *trps_comm_update(TALLOC_CTX *mem_ctx, TRPS_INSTANCE *trps, TR_NAME *peer_gssname, TR_COMM *comm, TR_REALM *realm)
1484 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
1485 TRP_UPD *upd=trp_upd_new(tmp_ctx);
1486 TRP_INFOREC *rec=NULL;
1487 TR_COMM_ITER *iter=NULL;
1488 TR_COMM_MEMB *memb=NULL;
1493 trp_upd_set_comm(upd, tr_comm_dup_id(comm));
1494 trp_upd_set_realm(upd, tr_realm_dup_id(realm));
1495 /* leave peer empty */
1497 iter=tr_comm_iter_new(tmp_ctx);
1499 tr_err("trps_comm_update: unable to allocate iterator.");
1504 /* now add inforecs */
1505 switch (realm->role) {
1507 memb=tr_comm_table_find_idp_memb(trps->ctable,
1508 tr_realm_get_id(realm),
1509 tr_comm_get_id(comm));
1512 memb=tr_comm_table_find_rp_memb(trps->ctable,
1513 tr_realm_get_id(realm),
1514 tr_comm_get_id(comm));
1520 for (memb=tr_comm_memb_iter_first(iter, memb);
1522 memb=tr_comm_memb_iter_next(iter)) {
1523 rec=trps_memb_to_inforec(tmp_ctx, trps, memb);
1525 tr_err("trps_comm_update: unable to allocate inforec.");
1529 trp_upd_add_inforec(upd, rec);
1533 if (trp_upd_get_inforec(upd)==NULL)
1534 upd=NULL; /* no inforecs, no reason to send the update */
1536 talloc_steal(mem_ctx, upd); /* success! */
1539 talloc_free(tmp_ctx);
1543 /* Find all community updates to send to a peer and add these as TR_UPD records
1544 * to the updates GPtrArray. */
1545 static TRP_RC trps_select_comm_updates_for_peer(TALLOC_CTX *mem_ctx,
1547 TRPS_INSTANCE *trps,
1548 TR_NAME *peer_gssname,
1551 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
1552 TR_COMM_ITER *comm_iter=NULL;
1554 TR_COMM_ITER *realm_iter=NULL;
1555 TR_REALM *realm=NULL;
1557 TRP_RC rc=TRP_ERROR;
1559 /* currently do not send any communities on triggered updates */
1565 comm_iter=tr_comm_iter_new(tmp_ctx);
1566 realm_iter=tr_comm_iter_new(tmp_ctx);
1567 if ((comm_iter==NULL) || (realm_iter==NULL)) {
1568 tr_err("trps_select_comm_updates_for_peer: unable to allocate iterator.");
1573 /* do every community */
1574 for (comm=tr_comm_table_iter_first(comm_iter, trps->ctable);
1576 comm=tr_comm_table_iter_next(comm_iter)) {
1577 /* do every realm in this community */
1578 tr_debug("trps_select_comm_updates_for_peer: looking through community %.*s",
1579 tr_comm_get_id(comm)->len,
1580 tr_comm_get_id(comm)->buf);
1581 for (realm=tr_realm_iter_first(realm_iter, trps->ctable, tr_comm_get_id(comm));
1583 realm=tr_realm_iter_next(realm_iter)) {
1584 /* get the update for this comm/realm */
1585 tr_debug("trps_select_comm_updates_for_peer: adding realm %.*s",
1586 tr_realm_get_id(realm)->len,
1587 tr_realm_get_id(realm)->buf);
1588 upd=trps_comm_update(mem_ctx, trps, peer_gssname, comm, realm);
1590 g_ptr_array_add(updates, upd);
1595 talloc_free(tmp_ctx);
1600 /* helper for trps_update_one_peer. Frees the TRP_UPD pointed to by a GPtrArray element */
1601 static void trps_trp_upd_destroy(gpointer data)
1603 trp_upd_free((TRP_UPD *)data);
1606 /* all routes/communities to a single peer, unless comm/realm are specified (both or neither must be NULL) */
1607 static TRP_RC trps_update_one_peer(TRPS_INSTANCE *trps,
1609 TRP_UPDATE_TYPE update_type,
1613 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
1614 TR_MSG msg; /* not a pointer! */
1616 TRP_ROUTE *route=NULL;
1619 TRP_RC rc=TRP_ERROR;
1620 TR_NAME *peer_label=trp_peer_get_label(peer);
1621 GPtrArray *updates=g_ptr_array_new_with_free_func(trps_trp_upd_destroy);
1623 if (updates==NULL) {
1624 tr_err("trps_update_one_peer: unable to allocate updates array.");
1629 switch (update_type) {
1630 case TRP_UPDATE_TRIGGERED:
1631 tr_debug("trps_update_one_peer: preparing triggered update for %.*s",
1632 peer_label->len, peer_label->buf);
1634 case TRP_UPDATE_SCHEDULED:
1635 tr_debug("trps_update_one_peer: preparing scheduled update for %.*s",
1636 peer_label->len, peer_label->buf);
1638 case TRP_UPDATE_REQUESTED:
1639 tr_debug("trps_update_one_peer: preparing requested update for %.*s",
1640 peer_label->len, peer_label->buf);
1643 tr_err("trps_update_one_peer: invalid update type requested.");
1648 /* First, gather route updates. */
1649 tr_debug("trps_update_one_peer: selecting route updates for %.*s.", peer_label->len, peer_label->buf);
1650 if ((comm==NULL) && (realm==NULL)) {
1652 rc=trps_select_route_updates_for_peer(tmp_ctx,
1656 update_type==TRP_UPDATE_TRIGGERED);
1657 } else if ((comm!=NULL) && (realm!=NULL)) {
1658 /* a single community/realm was requested */
1659 route=trps_select_realm_update(trps, comm, realm, peer_label);
1661 /* we have no actual update to send back, MUST send a retraction */
1662 tr_debug("trps_update_one_peer: community/realm without route requested, sending mandatory retraction.");
1663 route=trp_route_new(tmp_ctx);
1664 trp_route_set_comm(route, tr_dup_name(comm));
1665 trp_route_set_realm(route, tr_dup_name(realm));
1666 trp_route_set_peer(route, tr_new_name(""));
1667 trp_route_set_metric(route, TRP_METRIC_INFINITY);
1668 trp_route_set_trust_router(route, tr_new_name(""));
1669 trp_route_set_next_hop(route, tr_new_name(""));
1671 upd=trps_route_to_upd(tmp_ctx, trps, route);
1673 tr_err("trps_update_one_peer: unable to allocate route update.");
1677 g_ptr_array_add(updates, upd);
1679 tr_err("trps_update_one_peer: error: only comm or realm was specified. Need both or neither.");
1684 /* Second, gather community updates */
1685 tr_debug("trps_update_one_peer: selecting community updates for %.*s.", peer_label->len, peer_label->buf);
1686 rc=trps_select_comm_updates_for_peer(tmp_ctx, updates, trps, peer_label, update_type==TRP_UPDATE_TRIGGERED);
1688 /* see if we have anything to send */
1689 if (updates->len<=0)
1690 tr_debug("trps_update_one_peer: no updates for %.*s", peer_label->len, peer_label->buf);
1692 tr_debug("trps_update_one_peer: sending %d update messages.", updates->len);
1693 for (ii=0; ii<updates->len; ii++) {
1694 upd=(TRP_UPD *)g_ptr_array_index(updates, ii);
1695 /* now encode the update message */
1696 tr_msg_set_trp_upd(&msg, upd);
1697 encoded=tr_msg_encode(&msg);
1698 if (encoded==NULL) {
1699 tr_err("trps_update_one_peer: error encoding update.");
1704 tr_debug("trps_update_one_peer: adding message to queue.");
1705 if (trps_send_msg(trps, peer, encoded) != TRP_SUCCESS)
1706 tr_err("trps_update_one_peer: error queueing update.");
1708 tr_debug("trps_update_one_peer: update queued successfully.");
1710 tr_msg_free_encoded(encoded);
1719 g_ptr_array_free(updates, TRUE); /* frees any TRP_UPD records */
1720 talloc_free(tmp_ctx);
1724 /* all routes/communities to all peers */
1725 TRP_RC trps_update(TRPS_INSTANCE *trps, TRP_UPDATE_TYPE update_type)
1727 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
1728 TRP_PTABLE_ITER *iter=trp_ptable_iter_new(tmp_ctx);
1729 TRP_PEER *peer=NULL;
1730 TRP_RC rc=TRP_SUCCESS;
1732 if (trps->ptable==NULL)
1733 return TRP_SUCCESS; /* no peers, nothing to do */
1736 tr_err("trps_update: failed to allocate peer table iterator.");
1737 talloc_free(tmp_ctx);
1741 for (peer=trp_ptable_iter_first(iter, trps->ptable);
1742 (peer!=NULL) && (rc==TRP_SUCCESS);
1743 peer=trp_ptable_iter_next(iter))
1745 if (!trps_peer_connected(trps, peer)) {
1746 TR_NAME *peer_label=trp_peer_get_label(peer);
1747 tr_debug("trps_update: no TRP connection to %.*s, skipping.",
1748 peer_label->len, peer_label->buf);
1751 rc=trps_update_one_peer(trps, peer, update_type, NULL, NULL);
1754 tr_debug("trps_update: rc=%u after attempting update.", rc);
1755 trp_ptable_iter_free(iter);
1756 trp_rtable_clear_triggered(trps->rtable); /* don't re-send triggered updates */
1757 talloc_free(tmp_ctx);
1761 TRP_RC trps_add_route(TRPS_INSTANCE *trps, TRP_ROUTE *route)
1763 trp_rtable_add(trps->rtable, route); /* should return status */
1767 /* steals the peer object */
1768 TRP_RC trps_add_peer(TRPS_INSTANCE *trps, TRP_PEER *peer)
1770 if (trps->ptable==NULL) {
1771 trps->ptable=trp_ptable_new(trps);
1772 if (trps->ptable==NULL)
1775 return trp_ptable_add(trps->ptable, peer);
1778 TRP_PEER *trps_get_peer_by_gssname(TRPS_INSTANCE *trps, TR_NAME *gssname)
1780 if (trps->ptable==NULL)
1783 return trp_ptable_find_gss_name(trps->ptable, gssname);
1786 TRP_PEER *trps_get_peer_by_servicename(TRPS_INSTANCE *trps, TR_NAME *servicename)
1788 if (trps->ptable==NULL)
1791 return trp_ptable_find_servicename(trps->ptable, servicename);
1794 int trps_peer_connected(TRPS_INSTANCE *trps, TRP_PEER *peer)
1796 TRPC_INSTANCE *trpc=trps_find_trpc(trps, peer);
1800 if (trpc_get_status(trpc)==TRP_CONNECTION_UP)
1807 static TRP_RC trps_handle_request(TRPS_INSTANCE *trps, TRP_REQ *req)
1810 TR_NAME *realm=NULL;
1812 tr_debug("trps_handle_request: handling TRP request.");
1814 if (trps_validate_request(trps, req) != TRP_SUCCESS) {
1815 tr_notice("trps_handle_request: received invalid TRP request.");
1819 if (!trp_req_is_wildcard(req)) {
1820 comm=trp_req_get_comm(req);
1821 realm=trp_req_get_realm(req);
1822 tr_debug("trps_handle_request: route for %.*s/%.*s requested.",
1823 comm->len, comm->buf, realm->len, realm->buf);
1825 tr_debug("trps_handle_request: all routes requested.");
1826 /* leave comm/realm NULL */
1828 return trps_update_one_peer(trps,
1829 trps_get_peer_by_gssname(trps, trp_req_get_peer(req)),
1830 TRP_UPDATE_REQUESTED,
1836 TRP_RC trps_handle_tr_msg(TRPS_INSTANCE *trps, TR_MSG *tr_msg)
1838 TRP_RC rc=TRP_ERROR;
1840 switch (tr_msg_get_msg_type(tr_msg)) {
1842 rc=trps_handle_update(trps, tr_msg_get_trp_upd(tr_msg));
1843 if (rc==TRP_SUCCESS) {
1844 rc=trps_update_active_routes(trps);
1845 trps_update(trps, TRP_UPDATE_TRIGGERED); /* send any triggered routes */
1850 rc=trps_handle_request(trps, tr_msg_get_trp_req(tr_msg));
1854 /* unknown error or one we don't care about (e.g., TID messages) */
1859 /* send wildcard route request to a peer */
1860 TRP_RC trps_wildcard_route_req(TRPS_INSTANCE *trps, TR_NAME *peer_servicename)
1862 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
1863 TRP_PEER *peer=trps_get_peer_by_servicename(trps, peer_servicename);
1864 TR_MSG msg; /* not a pointer */
1865 TRP_REQ *req=trp_req_new(tmp_ctx);
1867 TRP_RC rc=TRP_ERROR;
1870 tr_err("trps_wildcard_route_req: unknown peer (%.*s).", peer_servicename->len, peer_servicename->buf);
1874 if ((req==NULL) || (trp_req_make_wildcard(req)!=TRP_SUCCESS)) {
1875 tr_err("trps_wildcard_route_req: unable to create wildcard TRP request.");
1880 tr_msg_set_trp_req(&msg, req);
1881 encoded=tr_msg_encode(&msg);
1882 if (encoded==NULL) {
1883 tr_err("trps_wildcard_route_req: error encoding wildcard TRP request.");
1888 tr_debug("trps_wildcard_route_req: adding message to queue.");
1889 if (trps_send_msg(trps, peer, encoded) != TRP_SUCCESS) {
1890 tr_err("trps_wildcard_route_req: error queueing request.");
1893 tr_debug("trps_wildcard_route_req: request queued successfully.");
1899 tr_msg_free_encoded(encoded);
1903 talloc_free(tmp_ctx);