TRPS_INSTANCE *trps=talloc(mem_ctx, TRPS_INSTANCE);
if (trps!=NULL) {
trps->hostname=NULL;
- trps->port=0;
+ trps->trps_port=0;
trps->cookie=NULL;
trps->conn=NULL;
trps->trpc=NULL;
{
TALLOC_CTX *tmp_ctx=talloc_new(NULL);
TR_NAME *label=NULL;
- char *s=talloc_asprintf(tmp_ctx, "%s:%u", trps->hostname, trps->port);
+ char *s=talloc_asprintf(tmp_ctx, "%s:%u", trps->hostname, trps->trps_port);
if (s==NULL)
goto cleanup;
label=tr_new_name(s);
/* get the connection for this peer */
trpc=trps_find_trpc(trps, peer);
- /* instead, let's let that happen and then clear the queue when an attempt to
- * connect fails */
+ /* The peer connection (trpc) usually exists even if the connection is down.
+ * We will queue messages even if the connection is down. To prevent this from
+ * endlessly increasing the size of the queue, the trpc handler needs to clear
+ * its queue periodically, even if it is unable to send the messages
+ */
if (trpc==NULL) {
tr_warning("trps_send_msg: skipping message queued for missing TRP client entry.");
- } else if (trpc->shutting_down) {
- tr_debug("trps_send_msg: skipping message because TRP client is shutting down.");
- rc = TRP_SUCCESS; /* it's ok that this didn't get sent, the connection will be gone in a moment */
} else {
- mq_msg=tr_mq_msg_new(tmp_ctx, TR_MQMSG_TRPC_SEND, TR_MQ_PRIO_NORMAL);
+ mq_msg=tr_mq_msg_new(tmp_ctx, TR_MQMSG_TRPC_SEND);
msg_dup=talloc_strdup(mq_msg, msg); /* get local copy in mq_msg context */
tr_mq_msg_set_payload(mq_msg, msg_dup, NULL); /* no need for a free() func */
trpc_mq_add(trpc, mq_msg);
switch (tr_msg_get_msg_type(*msg)) {
case TRP_UPDATE:
trp_upd_set_peer(tr_msg_get_trp_upd(*msg), tr_dup_name(conn_peer));
- 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 */
/* update provenance if necessary */
trp_upd_add_to_provenance(tr_msg_get_trp_upd(*msg), trp_peer_get_label(peer));
break;
TRPS_MSG_FUNC msg_handler,
TRP_AUTH_FUNC auth_handler,
const char *hostname,
- unsigned int port,
+ int port,
void *cookie,
int *fd_out,
size_t max_fd)
n_fd = tr_sock_listen_all(port, fd_out, max_fd);
if (n_fd == 0)
- tr_err("trps_get_listener: Error opening port %d.");
+ tr_err("trps_get_listener: Error opening port %d.", port);
else {
/* opening port succeeded */
tr_info("trps_get_listener: Opened port %d.", port);
trps->msg_handler = msg_handler;
trps->auth_handler = auth_handler;
trps->hostname = talloc_strdup(trps, hostname);
- trps->port = port;
+ trps->trps_port = port;
trps->cookie = cookie;
}
switch(trp_inforec_get_type(rec)) {
case TRP_INFOREC_TYPE_ROUTE:
if ((trp_inforec_get_trust_router(rec)==NULL)
- || (trp_inforec_get_next_hop(rec)==NULL)) {
+ || (trp_inforec_get_next_hop(rec)==NULL)) {
tr_debug("trps_validate_inforec: missing record info.");
return TRP_ERROR;
}
- /* check for valid metric */
+ /* check for valid ports */
+ if ((trp_inforec_get_trust_router_port(rec) <= 0)
+ || (trp_inforec_get_trust_router_port(rec) > 65535)) {
+ tr_debug("trps_validate_inforec: invalid trust router port (%d)",
+ trp_inforec_get_trust_router_port(rec));
+ return TRP_ERROR;
+ }
+
+ if ((trp_inforec_get_next_hop_port(rec) <= 0)
+ || (trp_inforec_get_next_hop_port(rec) > 65535)) {
+ tr_debug("trps_validate_inforec: invalid next hop port (%d)",
+ trp_inforec_get_next_hop_port(rec));
+ return TRP_ERROR;
+ }
+
+ /* check for valid metric */
if (trp_metric_is_invalid(trp_inforec_get_metric(rec))) {
tr_debug("trps_validate_inforec: invalid metric (%u).", trp_inforec_get_metric(rec));
return TRP_ERROR;
return ts;
}
+
+/* compare hostname/port of the trust router, return 0 if they match */
+static int trust_router_changed(TRP_ROUTE *route, TRP_INFOREC *rec)
+{
+ if (trp_route_get_trust_router_port(route) != trp_inforec_get_trust_router_port(rec))
+ return 1;
+
+ return tr_name_cmp(trp_route_get_trust_router(route),
+ trp_inforec_get_trust_router(rec));
+}
+
static TRP_RC trps_accept_update(TRPS_INSTANCE *trps, TRP_UPD *upd, TRP_INFOREC *rec)
{
TRP_ROUTE *entry=NULL;
trp_route_set_realm(entry, trp_upd_dup_realm(upd));
trp_route_set_peer(entry, trp_upd_dup_peer(upd));
trp_route_set_trust_router(entry, trp_inforec_dup_trust_router(rec));
+ trp_route_set_trust_router_port(entry, trp_inforec_get_trust_router_port(rec));
trp_route_set_next_hop(entry, trp_inforec_dup_next_hop(rec));
- /* TODO: pass next hop port (now defaults to TID_PORT) --jlr */
+ trp_route_set_next_hop_port(entry, trp_inforec_get_next_hop_port(rec));
if ((trp_route_get_comm(entry)==NULL)
||(trp_route_get_realm(entry)==NULL)
||(trp_route_get_peer(entry)==NULL)
trp_route_set_metric(entry, trp_inforec_get_metric(rec));
trp_route_set_interval(entry, trp_inforec_get_interval(rec));
- /* check whether the trust router has changed */
- if (0!=tr_name_cmp(trp_route_get_trust_router(entry),
- trp_inforec_get_trust_router(rec))) {
+ /* check whether the trust router has changed (either name or port) */
+ if (trust_router_changed(entry, rec)) {
/* The name changed. Set this route as triggered. */
tr_debug("trps_accept_update: trust router for route changed.");
trp_route_set_triggered(entry, 1);
trp_route_set_trust_router(entry, trp_inforec_dup_trust_router(rec)); /* frees old name */
+ trp_route_set_trust_router_port(entry, trp_inforec_get_trust_router_port(rec));
}
if (!trps_route_retracted(trps, entry)) {
tr_debug("trps_accept_update: route not retracted, setting expiry timer.");
trps_accept_update(trps, upd, rec);
} else {
/* Update is infeasible. Ignore it unless the trust router has changed. */
- if (0!=tr_name_cmp(trp_route_get_trust_router(route),
- trp_inforec_get_trust_router(rec))) {
+ if (trust_router_changed(route, rec)) {
/* the trust router associated with the route has changed, treat update as a retraction */
trps_retract_route(trps, route);
}
/* choose the best route to comm/realm, optionally excluding routes to a particular peer */
static TRP_ROUTE *trps_find_best_route(TRPS_INSTANCE *trps,
- TR_NAME *comm,
- TR_NAME *realm,
- TR_NAME *exclude_peer)
+ TR_NAME *comm,
+ TR_NAME *realm,
+ TR_NAME *exclude_peer_label)
{
TRP_ROUTE **entry=NULL;
TRP_ROUTE *best=NULL;
+ TRP_PEER *route_peer = NULL;
size_t n_entry=0;
unsigned int kk=0;
unsigned int kk_min=0;
entry=trp_rtable_get_realm_entries(trps->rtable, comm, realm, &n_entry);
for (kk=0; kk<n_entry; kk++) {
if (trp_route_get_metric(entry[kk]) < min_metric) {
- if ((exclude_peer==NULL) || (0!=tr_name_cmp(trp_route_get_peer(entry[kk]),
- exclude_peer))) {
- kk_min=kk;
- min_metric=trp_route_get_metric(entry[kk]);
- }
+ if (exclude_peer_label != NULL) {
+ if (!trp_route_is_local(entry[kk])) {
+ /* route is not local, check the peer label */
+ route_peer = trp_ptable_find_gss_name(trps->ptable,
+ trp_route_get_peer(entry[kk]));
+ if (route_peer == NULL) {
+ tr_err("trps_find_best_route: unknown peer GSS name (%.*s) for route %d to %.*s/%.*s",
+ trp_route_get_peer(entry[kk])->len, trp_route_get_peer(entry[kk])->buf,
+ kk,
+ realm->len, realm->buf,
+ comm->len, comm->buf);
+ continue; /* unknown peer, skip the route */
+ }
+ if (0 == tr_name_cmp(exclude_peer_label, trp_peer_get_label(route_peer))) {
+ /* we're excluding this peer - skip the route */
+ continue;
+ }
+ }
+ }
+ /* if we get here, we're not excluding the route */
+ kk_min = kk;
+ min_metric = trp_route_get_metric(entry[kk]);
}
}
+
if (trp_metric_is_finite(min_metric))
best=entry[kk_min];
{
TALLOC_CTX *tmp_ctx=talloc_new(NULL);
struct timespec sweep_time={0,0};
+ struct timespec tmp = {0};
TR_COMM_MEMB *memb=NULL;
TR_COMM_ITER *iter=NULL;
TRP_RC rc=TRP_ERROR;
tr_comm_memb_get_realm_id(memb)->len, tr_comm_memb_get_realm_id(memb)->buf,
tr_comm_get_id(tr_comm_memb_get_comm(memb))->len, tr_comm_get_id(tr_comm_memb_get_comm(memb))->buf,
tr_comm_memb_get_origin(memb)->len, tr_comm_memb_get_origin(memb)->buf,
- timespec_to_str(tr_comm_memb_get_expiry(memb)));
+ timespec_to_str(tr_comm_memb_get_expiry_realtime(memb, &tmp)));
tr_comm_table_remove_memb(trps->ctable, memb);
tr_comm_memb_free(memb);
} else {
tr_comm_memb_expire(memb);
trps_compute_expiry(trps, tr_comm_memb_get_interval(memb), tr_comm_memb_get_expiry(memb));
tr_debug("trps_sweep_ctable: community membership expired at %s, resetting expiry to %s (%.*s in %.*s, origin %.*s).",
- timespec_to_str(&sweep_time),
- timespec_to_str(tr_comm_memb_get_expiry(memb)),
+ timespec_to_str(tr_clock_convert(TRP_CLOCK, &sweep_time, CLOCK_REALTIME, &tmp)),
+ timespec_to_str(tr_comm_memb_get_expiry_realtime(memb, &tmp)),
tr_comm_memb_get_realm_id(memb)->len, tr_comm_memb_get_realm_id(memb)->buf,
tr_comm_get_id(tr_comm_memb_get_comm(memb))->len, tr_comm_get_id(tr_comm_memb_get_comm(memb))->buf,
tr_comm_memb_get_origin(memb)->len, tr_comm_memb_get_origin(memb)->buf);
trp_route_get_peer(route)));
}
- /* Note that we leave the next hop empty since the recipient fills that in.
- * This is where we add the link cost (currently always 1) to the next peer. */
- if ((trp_inforec_set_trust_router(rec, trp_route_dup_trust_router(route)) != TRP_SUCCESS)
- ||(trp_inforec_set_metric(rec,
- trps_metric_add(trp_route_get_metric(route),
- linkcost)) != TRP_SUCCESS)
- ||(trp_inforec_set_interval(rec, trps_get_update_interval(trps)) != TRP_SUCCESS)) {
+ /*
+ * This is where we add the link cost (currently always 1) to the next peer.
+ *
+ * Here, set next_hop to our TID address/port rather than passing along our own
+ * next_hop. That is the one *we* use to forward requests. We are advertising
+ * ourselves as a hop for our peers.
+ */
+ if ((TRP_SUCCESS != trp_inforec_set_trust_router(rec,
+ trp_route_dup_trust_router(route),
+ trp_route_get_trust_router_port(route)))
+ ||(TRP_SUCCESS != trp_inforec_set_next_hop(rec,
+ tr_new_name(trps->hostname),
+ trps->tids_port))
+ ||(TRP_SUCCESS != trp_inforec_set_metric(rec,
+ trps_metric_add(trp_route_get_metric(route),
+ linkcost)))
+ ||(TRP_SUCCESS != trp_inforec_set_interval(rec, trps_get_update_interval(trps)))) {
tr_err("trps_route_to_inforec: error creating route update.");
talloc_free(rec);
rec=NULL;
}
/* select the correct route to comm/realm to be announced to peer */
-static TRP_ROUTE *trps_select_realm_update(TRPS_INSTANCE *trps, TR_NAME *comm, TR_NAME *realm, TR_NAME *peer_gssname)
+static TRP_ROUTE *trps_select_realm_update(TRPS_INSTANCE *trps, TR_NAME *comm, TR_NAME *realm, TR_NAME *peer_label)
{
- TRP_ROUTE *route;
+ TRP_ROUTE *route = NULL;
+ TRP_PEER *route_peer = NULL;
+ TR_NAME *route_peer_label = NULL;
/* Take the currently selected route unless it is through the peer we're sending the update to.
- * I.e., enforce the split horizon rule. */
+ * I.e., enforce the split horizon rule. Start by looking up the currently selected route. */
route=trp_rtable_get_selected_entry(trps->rtable, comm, realm);
if (route==NULL) {
/* No selected route, this should only happen if the only route has been retracted,
* in which case we do not want to advertise it. */
return NULL;
}
- tr_debug("trps_select_realm_update: %s vs %s", peer_gssname->buf,
- trp_route_get_peer(route)->buf);
- if (0==tr_name_cmp(peer_gssname, trp_route_get_peer(route))) {
- tr_debug("trps_select_realm_update: matched, finding alternate route");
- /* the selected entry goes through the peer we're reporting to, choose an alternate */
- route=trps_find_best_route(trps, comm, realm, peer_gssname);
- if ((route==NULL) || (!trp_metric_is_finite(trp_route_get_metric(route))))
- return NULL; /* don't advertise a nonexistent or retracted route */
+
+ /* Check whether it's local. */
+ if (trp_route_is_local(route)) {
+ /* It is always ok to announce a local route */
+ tr_debug("trps_select_realm_update: selected route for %.*s/%.*s is local",
+ realm->len, realm->buf,
+ comm->len, comm->buf);
+ } else {
+ /* It's not local. Get the route's peer and check whether it's the same place we
+ * got the selected route from. Peer should always correspond to an entry in our
+ * peer table. */
+ tr_debug("trps_select_realm_update: selected route for %.*s/%.*s is not local",
+ realm->len, realm->buf,
+ comm->len, comm->buf);
+ route_peer = trp_ptable_find_gss_name(trps->ptable, trp_route_get_peer(route));
+ if (route_peer == NULL) {
+ tr_err("trps_select_realm_update: unknown peer GSS name (%.*s) for selected route for %.*s/%.*s",
+ trp_route_get_peer(route)->len, trp_route_get_peer(route)->buf,
+ realm->len, realm->buf,
+ comm->len, comm->buf);
+ return NULL;
+ }
+ route_peer_label = trp_peer_get_label(route_peer);
+ if (route_peer_label == NULL) {
+ tr_err("trps_select_realm_update: error retrieving peer label for selected route for %.*s/%.*s",
+ realm->len, realm->buf,
+ comm->len, comm->buf);
+ return NULL;
+ }
+
+ /* see if these match */
+ tr_debug("trps_select_realm_update: %.*s vs %.*s",
+ peer_label->len, peer_label->buf,
+ route_peer_label->len, route_peer_label->buf);
+
+ if (0==tr_name_cmp(peer_label, route_peer_label)) {
+ /* the selected entry goes through the peer we're reporting to, choose an alternate */
+ tr_debug("trps_select_realm_update: matched, finding alternate route");
+ route=trps_find_best_route(trps, comm, realm, peer_label);
+ if ((route==NULL) || (!trp_metric_is_finite(trp_route_get_metric(route)))) {
+ tr_debug("trps_select_realm_update: no route to %.*s/%.*s suitable to advertise to %.*s",
+ realm->len, realm->buf,
+ comm->len, comm->buf,
+ peer_label->len, peer_label->buf);
+ return NULL; /* don't advertise a nonexistent or retracted route */
+ }
+ }
}
return route;
}
static TRP_RC trps_select_route_updates_for_peer(TALLOC_CTX *mem_ctx,
GPtrArray *updates,
TRPS_INSTANCE *trps,
- TR_NAME *peer_gssname,
+ TR_NAME *peer_label,
int triggered)
{
size_t n_comm=0;
for (ii=0; ii<n_comm; ii++) {
realm=trp_rtable_get_comm_realms(trps->rtable, comm[ii], &n_realm);
for (jj=0; jj<n_realm; jj++) {
- best=trps_select_realm_update(trps, comm[ii], realm[jj], peer_gssname);
+ best=trps_select_realm_update(trps, comm[ii], realm[jj], peer_label);
/* If we found a route, add it to the list. If triggered!=0, then only
* add triggered routes. */
if ((best!=NULL) && ((!triggered) || trp_route_is_triggered(best))) {
}
/* construct an update with all the inforecs for comm/realm/role to be sent to peer */
-static TRP_UPD *trps_comm_update(TALLOC_CTX *mem_ctx, TRPS_INSTANCE *trps, TR_NAME *peer_gssname, TR_COMM *comm, TR_REALM *realm)
+static TRP_UPD *trps_comm_update(TALLOC_CTX *mem_ctx,
+ TRPS_INSTANCE *trps,
+ TR_NAME *peer_label,
+ TR_COMM *comm,
+ TR_REALM *realm)
{
TALLOC_CTX *tmp_ctx=talloc_new(NULL);
TRP_UPD *upd=trp_upd_new(tmp_ctx);
static TRP_RC trps_select_comm_updates_for_peer(TALLOC_CTX *mem_ctx,
GPtrArray *updates,
TRPS_INSTANCE *trps,
- TR_NAME *peer_gssname,
+ TR_NAME *peer_label,
int triggered)
{
TALLOC_CTX *tmp_ctx=talloc_new(NULL);
tr_debug("trps_select_comm_updates_for_peer: adding realm %.*s",
tr_realm_get_id(realm)->len,
tr_realm_get_id(realm)->buf);
- upd=trps_comm_update(mem_ctx, trps, peer_gssname, comm, realm);
+ upd=trps_comm_update(mem_ctx, trps, peer_label, comm, realm);
if (upd!=NULL)
g_ptr_array_add(updates, upd);
}
projects / trust_router.git / blobdiff