+/*
+ * Copyright (c) 2016, JANET(UK)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of JANET(UK) nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <stdio.h>
#include <pthread.h>
#include <fcntl.h>
#include <event2/event.h>
#include <time.h>
#include <gsscon.h>
+#include <tr.h>
+#include <tr_mq.h>
#include <tr_rp.h>
+#include <trp_route.h>
#include <trp_internal.h>
+#include <trp_peer.h>
#include <trp_ptable.h>
#include <trp_rtable.h>
#include <tr_config.h>
{
tr_msg_free_decoded((TR_MSG *)p);
}
+
+static void tr_free_name_helper(void *arg)
+{
+ tr_free_name((TR_NAME *)arg);
+}
+
/* takes a TR_MSG and puts it in a TR_MQ_MSG for processing by the main thread */
static TRP_RC tr_trps_msg_handler(TRPS_INSTANCE *trps,
TRP_CONNECTION *conn,
/* n.b., conn is available here, but do not hold onto the reference
* because it may be cleaned up if the originating connection goes
* down before the message is processed */
- mq_msg=tr_mq_msg_new(tmp_ctx, "tr_msg");
+ mq_msg=tr_mq_msg_new(tmp_ctx, TR_MQMSG_MSG_RECEIVED, TR_MQ_PRIO_NORMAL);
if (mq_msg==NULL) {
return TRP_NOMEM;
}
tr_mq_msg_set_payload(mq_msg, (void *)tr_msg, msg_free_helper);
- trps_mq_append(trps, mq_msg);
+ trps_mq_add(trps, mq_msg);
talloc_free(tmp_ctx); /* cleans up the message if it did not get appended correctly */
return TRP_SUCCESS;
}
tr_debug("tr_trps_gss_handler()");
- if ((!client_name) || (!gss_name) || (!trps) || (!cfg_mgr)) {
+ if ((!client_name) || (!trps) || (!cfg_mgr)) {
tr_debug("tr_trps_gss_handler: Bad parameters.");
return -1;
}
/* look up the TRPS peer matching the GSS name */
- if (NULL==trps_get_peer(trps, &name)) {
+ if (NULL==trps_get_peer_by_gssname(trps, &name)) {
tr_warning("tr_trps_gss_handler: Connection attempt from unknown peer (GSS name: %.*s).", name.len, name.buf);
return -1;
}
TRP_CONNECTION *conn;
TRPS_INSTANCE *trps;
};
-/* thread to handle GSS connections to peers */
+/* thread to handle GSS connections from peers */
static void *tr_trps_thread(void *arg)
{
TALLOC_CTX *tmp_ctx=talloc_new(NULL);
TR_MQ_MSG *msg=NULL;
tr_debug("tr_trps_thread: started");
+ if (trps_authorize_connection(trps, conn)!=TRP_SUCCESS)
+ goto cleanup;
+
+ msg=tr_mq_msg_new(tmp_ctx, TR_MQMSG_TRPS_CONNECTED, TR_MQ_PRIO_HIGH);
+ tr_mq_msg_set_payload(msg, (void *)tr_dup_name(trp_connection_get_peer(conn)), tr_free_name_helper);
+ if (msg==NULL) {
+ tr_err("tr_trps_thread: error allocating TR_MQ_MSG");
+ goto cleanup;
+ }
+ trps_mq_add(trps, msg); /* steals msg context */
+ msg=NULL;
+
trps_handle_connection(trps, conn);
- msg=tr_mq_msg_new(tmp_ctx, TR_MQMSG_TRPS_DISCONNECTED);
+cleanup:
+ msg=tr_mq_msg_new(tmp_ctx, TR_MQMSG_TRPS_DISCONNECTED, TR_MQ_PRIO_HIGH);
tr_mq_msg_set_payload(msg, (void *)conn, NULL); /* do not pass a free routine */
if (msg==NULL)
tr_err("tr_trps_thread: error allocating TR_MQ_MSG");
else
- trps_mq_append(trps, msg);
-
+ trps_mq_add(trps, msg);
tr_debug("tr_trps_thread: exit");
talloc_free(tmp_ctx);
return NULL;
tr_debug("tr_trps_event_cb: unexpected event on TRPS socket (event=0x%X)", event);
} else {
/* create a thread to handle this connection */
- asprintf(&name, "trustrouter@%s", trps->hostname);
- gssname=tr_new_name(name);
- free(name); name=NULL;
+ name = talloc_asprintf(tmp_ctx, "trustrouter@%s", trps->hostname);
+ if (name == NULL)
+ goto cleanup;
+ gssname=tr_new_name(name); /* name cleaned up with tmp_ctx */
+
conn=trp_connection_accept(tmp_ctx, listener, gssname);
if (conn!=NULL) {
/* need to monitor this fd and trigger events when read becomes possible */
thread_data=talloc(conn, struct trps_thread_data);
if (thread_data==NULL) {
tr_err("tr_trps_event_cb: unable to allocate trps_thread_data");
- talloc_free(tmp_ctx);
- return;
+ goto cleanup;
}
thread_data->conn=conn;
thread_data->trps=trps;
+ trps_add_connection(trps, conn); /* remember the connection - this puts conn and the thread data in trps's talloc context */
pthread_create(trp_connection_get_thread(conn), NULL, tr_trps_thread, thread_data);
- pthread_detach(*(trp_connection_get_thread(conn))); /* we will not rejoin the thread */
- trps_add_connection(trps, conn); /* remember the connection */
}
}
+
+ cleanup:
talloc_free(tmp_ctx);
}
{
/* everything belonging to the thread is in the TRP_CONNECTION
* associated with it */
+ tr_debug("tr_trps_cleanup_conn: freeing %p", conn);
+ pthread_join(*trp_connection_get_thread(conn), NULL);
trps_remove_connection(trps, conn);
trp_connection_free(conn);
- tr_debug("Deleted connection");
-}
-
-#if 0
-static void tr_trpc_abort(TRPC_INSTANCE *trpc)
-{
- TALLOC_CTX *tmp_ctx=talloc_new(NULL);
- TR_MQ_MSG *msg=tr_mq_msg_new(tmp_ctx, TR_MQMSG_ABORT);
- tr_mq_msg_set_payload(msg, (void *)conn, NULL); /* do not pass a free routine */
- trpc_mq_append(msg); /* gives msg over to the queue to manage */
-
+ tr_debug("tr_trps_cleanup_conn: deleted connection");
}
-#endif
static void tr_trps_cleanup_trpc(TRPS_INSTANCE *trps, TRPC_INSTANCE *trpc)
{
- /* everything belonging to the thread is in the TRP_CONNECTION
- * associated with it */
-/* tr_trpc_abort(trpc); */ /* tell trpc to abort */
+ pthread_join(*trp_connection_get_thread(trpc_get_conn(trpc)), NULL);
trps_remove_trpc(trps, trpc);
trpc_free(trpc);
- tr_debug("Deleted connection");
+ tr_debug("tr_trps_cleanup_trpc: deleted connection");
}
-static void tr_trps_print_route_table(TRPS_INSTANCE *trps, FILE *f)
+/**
+ * Get a dynamically allocated string with a description of the route table.
+ * Caller must free the string using talloc_free().
+ *
+ * @param memctx talloc context for the string
+ * @param trps trps instance containing the route table
+ * @return pointer to the output, or NULL on error
+ */
+static char *tr_trps_route_table_to_str(TALLOC_CTX *memctx, TRPS_INSTANCE *trps)
{
- char *table=trp_rtable_to_str(NULL, trps->rtable, " | ", NULL);
- if (table==NULL)
- fprintf(f, "Unable to print route table.\n");
- else {
- fprintf(f, "%s\n", table);
- talloc_free(table);
- }
+ return trp_rtable_to_str(memctx, trps->rtable, " | ", NULL);
}
+/**
+ * Get a dynamically allocated string with a description of the community table.
+ * Caller must free the string using talloc_free().
+ *
+ * @param memctx talloc context for the string
+ * @param trps trps instance containing the community table
+ * @return pointer to the output, or NULL on error
+ */
+static char *tr_trps_comm_table_to_str(TALLOC_CTX *memctx, TRPS_INSTANCE *trps)
+{
+ return tr_comm_table_to_str(memctx, trps->ctable);
+}
+
+/**
+ * Event handler to process TRP messages from connection threads. These
+ * are added to the message queue (mq) in tr_trps_msg_handler(), which
+ * runs in the other threads.
+ *
+ * @param socket Ignored
+ * @param event Ignored
+ * @param arg Pointer to the TRPS_INSTANCE
+ */
static void tr_trps_process_mq(int socket, short event, void *arg)
{
TRPS_INSTANCE *trps=talloc_get_type_abort(arg, TRPS_INSTANCE);
TR_MQ_MSG *msg=NULL;
const char *s=NULL;
+ TRP_PEER *peer = NULL;
+ char *tmp = NULL;
msg=trps_mq_pop(trps);
while (msg!=NULL) {
s=tr_mq_msg_get_message(msg);
- if (0==strcmp(s, TR_MQMSG_TRPS_DISCONNECTED)) {
- tr_trps_cleanup_conn(trps,
- talloc_get_type_abort(tr_mq_msg_get_payload(msg),
- TRP_CONNECTION));
+ if (0==strcmp(s, TR_MQMSG_TRPS_CONNECTED)) {
+ TR_NAME *peer_gssname=(TR_NAME *)tr_mq_msg_get_payload(msg);
+ peer=trps_get_peer_by_gssname(trps, peer_gssname); /* get the peer record */
+ tmp = tr_name_strdup(peer_gssname); /* get the name as a null-terminated string */
+ if (peer==NULL)
+ tr_err("tr_trps_process_mq: incoming connection from unknown peer (%s) reported.", tmp);
+ else {
+ trp_peer_set_incoming_status(peer, PEER_CONNECTED);
+ tr_notice("tr_trps_process_mq: incoming connection from %s established.", tmp);
+ }
+ free(tmp);
+ }
+ else if (0==strcmp(s, TR_MQMSG_TRPS_DISCONNECTED)) {
+ TRP_CONNECTION *conn=talloc_get_type_abort(tr_mq_msg_get_payload(msg), TRP_CONNECTION);
+ TR_NAME *peer_gssname=trp_connection_get_peer(conn);
+ peer=trps_get_peer_by_gssname(trps, peer_gssname); /* get the peer record */
+ tmp = tr_name_strdup(peer_gssname); /* get the name as a null-terminated string */
+ if (peer==NULL) {
+ tr_err("tr_trps_process_mq: incoming connection from unknown peer (%.*s) lost.", tmp);
+ } else {
+ trp_peer_set_incoming_status(peer, PEER_DISCONNECTED);
+ tr_trps_cleanup_conn(trps, conn);
+ tr_notice("tr_trps_process_mq: incoming connection from %s lost.", tmp);
+ }
+ free(tmp);
+ }
+ else if (0==strcmp(s, TR_MQMSG_TRPC_CONNECTED)) {
+ TR_NAME *svcname=(TR_NAME *)tr_mq_msg_get_payload(msg);
+ peer=trps_get_peer_by_servicename(trps, svcname);
+ tmp = tr_name_strdup(svcname);
+ if (peer==NULL)
+ tr_err("tr_trps_process_mq: outgoing connection to unknown peer (%s) reported.", tmp);
+ else {
+ trp_peer_set_outgoing_status(peer, PEER_CONNECTED);
+ tr_notice("tr_trps_process_mq: outgoing connection to %s established.", tmp);
+ }
+ free(tmp);
}
else if (0==strcmp(s, TR_MQMSG_TRPC_DISCONNECTED)) {
- /* trpc connection died */
- tr_trps_cleanup_trpc(trps,
- talloc_get_type_abort(tr_mq_msg_get_payload(msg),
- TRPC_INSTANCE));
+ TRPC_INSTANCE *trpc=talloc_get_type_abort(tr_mq_msg_get_payload(msg), TRPC_INSTANCE);
+ TR_NAME *svcname=trpc_get_gssname(trpc);
+ peer=trps_get_peer_by_servicename(trps, svcname);
+ tmp = tr_name_strdup(svcname);
+ if (peer==NULL)
+ tr_err("tr_trps_process_mq: outgoing connection to unknown peer (%s) lost.", tmp);
+ else {
+ trp_peer_set_outgoing_status(peer, PEER_DISCONNECTED);
+ tr_notice("tr_trps_process_mq: outgoing connection to %s lost.", tmp);
+ tr_trps_cleanup_trpc(trps, trpc);
+ }
+ free(tmp);
}
- else if (0==strcmp(s, "tr_msg")) {
+ else if (0==strcmp(s, TR_MQMSG_MSG_RECEIVED)) {
if (trps_handle_tr_msg(trps, tr_mq_msg_get_payload(msg))!=TRP_SUCCESS)
tr_notice("tr_trps_process_mq: error handling message.");
- else {
- tr_trps_print_route_table(trps, stderr);
- }
}
else
tr_notice("tr_trps_process_mq: unknown message '%s' received.", tr_mq_msg_get_message(msg));
TRPS_INSTANCE *trps=cookie->trps;
struct event *ev=cookie->ev;
- tr_debug("tr_trps_update: sending scheduled route updates.");
+ tr_debug("tr_trps_update: sending scheduled route/community updates.");
trps_update(trps, TRP_UPDATE_SCHEDULED);
event_add(ev, &(trps->update_interval));
+ tr_debug("tr_trps_update: update interval=%d", trps->update_interval.tv_sec);
}
static void tr_trps_sweep(int listener, short event, void *arg)
struct tr_trps_event_cookie *cookie=talloc_get_type_abort(arg, struct tr_trps_event_cookie);
TRPS_INSTANCE *trps=cookie->trps;
struct event *ev=cookie->ev;
+ char *table_str=NULL;
tr_debug("tr_trps_sweep: sweeping routes.");
trps_sweep_routes(trps);
+ tr_debug("tr_trps_sweep: sweeping communities.");
+ trps_sweep_ctable(trps);
+ table_str=tr_trps_route_table_to_str(NULL, trps);
+ if (table_str!=NULL) {
+ tr_debug(table_str);
+ talloc_free(table_str);
+ }
+
+ table_str=tr_trps_comm_table_to_str(NULL, trps);
+ if (table_str!=NULL) {
+ tr_debug(table_str);
+ talloc_free(table_str);
+ }
/* schedule the event to run again */
event_add(ev, &(trps->sweep_interval));
}
struct event *ev=cookie->ev;
tr_debug("tr_connection_update: checking peer connections.");
- tr_connect_to_peers(trps);
+ tr_connect_to_peers(trps, ev);
/* schedule the event to run again */
event_add(ev, &(trps->connect_interval));
}
event_free(ev->sweep_ev);
return 0;
}
-TR_TRPS_EVENTS *tr_trps_events_new(TALLOC_CTX *mem_ctx)
+static TR_TRPS_EVENTS *tr_trps_events_new(TALLOC_CTX *mem_ctx)
{
TR_TRPS_EVENTS *ev=talloc(mem_ctx, TR_TRPS_EVENTS);
if (ev!=NULL) {
if (ev->listen_ev==NULL) {
talloc_free(ev);
ev=NULL;
+ } else {
+ talloc_set_destructor((void *)ev, tr_trps_events_destructor);
}
- talloc_set_destructor((void *)ev, tr_trps_events_destructor);
}
return ev;
}
+static void tr_trps_events_free(TR_TRPS_EVENTS *ev)
+{
+ talloc_free(ev);
+}
+
/* Configure the trps instance and set up its event handler.
* Fills in trps_ev, which should be allocated by caller. */
-TRP_RC tr_trps_event_init(struct event_base *base,
- TRPS_INSTANCE *trps,
- TR_CFG_MGR *cfg_mgr,
- TR_TRPS_EVENTS *trps_ev)
+TRP_RC tr_trps_event_init(struct event_base *base, TR_INSTANCE *tr)
{
TALLOC_CTX *tmp_ctx=talloc_new(NULL);
struct tr_socket_event *listen_ev=NULL;
struct tr_trps_event_cookie *connection_cookie=NULL;
struct tr_trps_event_cookie *update_cookie=NULL;
struct tr_trps_event_cookie *sweep_cookie=NULL;
+ struct timeval zero_time={0,0};
TRP_RC retval=TRP_ERROR;
+ size_t ii=0;
- if (trps_ev == NULL) {
- tr_debug("tr_trps_event_init: Null trps_ev.");
- retval=TRP_BADARG;
+ if (tr->events != NULL) {
+ tr_notice("tr_trps_event_init: tr->events was not null. Freeing before reallocating..");
+ tr_trps_events_free(tr->events);
+ }
+
+ tr->events=tr_trps_events_new(tmp_ctx);
+ if (tr->events == NULL) {
+ tr_debug("tr_trps_event_init: unable to allocate event handles.");
+ retval=TRP_NOMEM;
goto cleanup;
}
/* get convenient handles */
- listen_ev=trps_ev->listen_ev;
+ listen_ev=tr->events->listen_ev;
- /* Create the cookie for callbacks. It is part of the trps context, so it will
+ /* Create the cookie for callbacks. It will end up part of the trps context, so it will
* be cleaned up when trps is freed by talloc_free. */
- trps_cookie=talloc(tmp_ctx, struct tr_trps_event_cookie);
+ trps_cookie=talloc(tr->events, struct tr_trps_event_cookie);
if (trps_cookie == NULL) {
tr_debug("tr_trps_event_init: Unable to allocate trps_cookie.");
retval=TRP_NOMEM;
+ tr_trps_events_free(tr->events);
+ tr->events=NULL;
goto cleanup;
}
- trps_cookie->trps=trps;
- trps_cookie->cfg_mgr=cfg_mgr;
- talloc_steal(trps, trps_cookie);
+ trps_cookie->trps=tr->trps;
+ trps_cookie->cfg_mgr=tr->cfg_mgr;
/* get a trps listener */
- listen_ev->sock_fd=trps_get_listener(trps,
- tr_trps_msg_handler,
- tr_trps_gss_handler,
- cfg_mgr->active->internal->hostname,
- cfg_mgr->active->internal->trps_port,
- (void *)trps_cookie);
- if (listen_ev->sock_fd < 0) {
+ listen_ev->n_sock_fd=trps_get_listener(tr->trps,
+ tr_trps_msg_handler,
+ tr_trps_gss_handler,
+ tr->cfg_mgr->active->internal->hostname,
+ tr->cfg_mgr->active->internal->trps_port,
+ (void *)trps_cookie,
+ listen_ev->sock_fd,
+ TR_MAX_SOCKETS);
+ if (listen_ev->n_sock_fd==0) {
tr_crit("Error opening TRP server socket.");
retval=TRP_ERROR;
+ tr_trps_events_free(tr->events);
+ tr->events=NULL;
goto cleanup;
}
- trps_cookie->ev=listen_ev->ev; /* in case it needs to frob the event */
-
- /* and its event */
- listen_ev->ev=event_new(base,
- listen_ev->sock_fd,
- EV_READ|EV_PERSIST,
- tr_trps_event_cb,
- (void *)trps);
- event_add(listen_ev->ev, NULL);
+
+ /* Set up events for the sockets */
+ for (ii=0; ii<listen_ev->n_sock_fd; ii++) {
+ listen_ev->ev[ii]=event_new(base,
+ listen_ev->sock_fd[ii],
+ EV_READ|EV_PERSIST,
+ tr_trps_event_cb,
+ (void *)(tr->trps));
+ event_add(listen_ev->ev[ii], NULL);
+ }
/* now set up message queue processing event, only triggered by
* tr_trps_mq_cb() */
- trps_ev->mq_ev=event_new(base,
- 0,
- EV_PERSIST,
- tr_trps_process_mq,
- (void *)trps);
- tr_mq_set_notify_cb(trps->mq, tr_trps_mq_cb, trps_ev->mq_ev);
+ tr->events->mq_ev=event_new(base,
+ 0,
+ EV_PERSIST,
+ tr_trps_process_mq,
+ (void *)(tr->trps));
+ tr_mq_set_notify_cb(tr->trps->mq, tr_trps_mq_cb, tr->events->mq_ev);
/* now set up the peer connection timer event */
- connection_cookie=talloc(tmp_ctx, struct tr_trps_event_cookie);
+ connection_cookie=talloc(tr->events, struct tr_trps_event_cookie);
if (connection_cookie == NULL) {
tr_debug("tr_trps_event_init: Unable to allocate connection_cookie.");
retval=TRP_NOMEM;
+ tr_trps_events_free(tr->events);
+ tr->events=NULL;
goto cleanup;
}
- connection_cookie->trps=trps;
- connection_cookie->cfg_mgr=cfg_mgr;
- talloc_steal(trps, connection_cookie);
- trps_ev->connect_ev=event_new(base, -1, EV_TIMEOUT, tr_connection_update, (void *)connection_cookie);
- connection_cookie->ev=trps_ev->connect_ev; /* in case it needs to frob the event */
- event_add(trps_ev->connect_ev, &(trps->connect_interval));
+ connection_cookie->trps=tr->trps;
+ connection_cookie->cfg_mgr=tr->cfg_mgr;
+ tr->events->connect_ev=event_new(base, -1, EV_TIMEOUT, tr_connection_update, (void *)connection_cookie);
+ connection_cookie->ev=tr->events->connect_ev; /* in case it needs to frob the event */
+ /* The first time, do this immediately. Thereafter, it will retrigger every trps->connect_interval */
+ event_add(tr->events->connect_ev, &zero_time);
/* now set up the route update timer event */
- update_cookie=talloc(tmp_ctx, struct tr_trps_event_cookie);
+ update_cookie=talloc(tr->events, struct tr_trps_event_cookie);
if (update_cookie == NULL) {
tr_debug("tr_trps_event_init: Unable to allocate update_cookie.");
retval=TRP_NOMEM;
+ tr_trps_events_free(tr->events);
+ tr->events=NULL;
goto cleanup;
}
- update_cookie->trps=trps;
- update_cookie->cfg_mgr=cfg_mgr;
- talloc_steal(trps, update_cookie);
- trps_ev->update_ev=event_new(base, -1, EV_TIMEOUT, tr_trps_update, (void *)update_cookie);
- update_cookie->ev=trps_ev->update_ev; /* in case it needs to frob the event */
- event_add(trps_ev->update_ev, &(trps->update_interval));
+ update_cookie->trps=tr->trps;
+ update_cookie->cfg_mgr=tr->cfg_mgr;
+ tr->events->update_ev=event_new(base, -1, EV_TIMEOUT, tr_trps_update, (void *)update_cookie);
+ update_cookie->ev=tr->events->update_ev; /* in case it needs to frob the event */
+ event_add(tr->events->update_ev, &(tr->trps->update_interval));
/* now set up the route table sweep timer event */
- sweep_cookie=talloc(tmp_ctx, struct tr_trps_event_cookie);
+ sweep_cookie=talloc(tr->events, struct tr_trps_event_cookie);
if (sweep_cookie == NULL) {
tr_debug("tr_trps_event_init: Unable to allocate sweep_cookie.");
retval=TRP_NOMEM;
+ tr_trps_events_free(tr->events);
+ tr->events=NULL;
goto cleanup;
}
- sweep_cookie->trps=trps;
- sweep_cookie->cfg_mgr=cfg_mgr;
- talloc_steal(trps, sweep_cookie);
- trps_ev->sweep_ev=event_new(base, -1, EV_TIMEOUT, tr_trps_sweep, (void *)sweep_cookie);
- sweep_cookie->ev=trps_ev->sweep_ev; /* in case it needs to frob the event */
- event_add(trps_ev->sweep_ev, &(trps->sweep_interval));
+ sweep_cookie->trps=tr->trps;
+ sweep_cookie->cfg_mgr=tr->cfg_mgr;
+ tr->events->sweep_ev=event_new(base, -1, EV_TIMEOUT, tr_trps_sweep, (void *)sweep_cookie);
+ sweep_cookie->ev=tr->events->sweep_ev; /* in case it needs to frob the event */
+ event_add(tr->events->sweep_ev, &(tr->trps->sweep_interval));
+ talloc_steal(tr, tr->events);
retval=TRP_SUCCESS;
cleanup:
return retval;
}
-
-struct trpc_notify_cb_data {
- int msg_ready;
- pthread_cond_t cond;
- pthread_mutex_t mutex;
-};
-
-static void tr_trpc_mq_cb(TR_MQ *mq, void *arg)
-{
- struct trpc_notify_cb_data *cb_data=(struct trpc_notify_cb_data *) arg;
- pthread_mutex_lock(&(cb_data->mutex));
- if (!cb_data->msg_ready) {
- cb_data->msg_ready=1;
- pthread_cond_signal(&(cb_data->cond));
- }
- pthread_mutex_unlock(&(cb_data->mutex));
-}
-
/* data passed to thread */
struct trpc_thread_data {
TRPC_INSTANCE *trpc;
TRPS_INSTANCE *trps;
};
+
+/**
+ * Thread for handling TRPC (outgoing) connections
+ *
+ * Opens a connection to a peer. If successful, notifies the trps thread by
+ * posting a TR_MQMSG_TRPC_CONNECTED message to the trps message queue.
+ * It then waits for messages on trpc->mq. Normally these will be TR_MQMSG_TRPC_SEND
+ * messages, which this thread forwards to the peer. If its connection is lost or
+ * a TR_MQMSG_ABORT message is received on trpc->mq, the thread sends a
+ * TR_MQMSG_TRPC_DISCONNECTED message to the trps thread, then cleans up and
+ * terminates.
+ *
+ * The trps may continue queueing messages for this client even when the
+ * connection is down. To prevent the queue from growing endlessly, this thread
+ * should clear its queue after failed connection attempts.
+ */
static void *tr_trpc_thread(void *arg)
{
TALLOC_CTX *tmp_ctx=talloc_new(NULL);
TR_MQ_MSG *msg=NULL;
const char *msg_type=NULL;
char *encoded_msg=NULL;
-
- struct trpc_notify_cb_data cb_data={0,
- PTHREAD_COND_INITIALIZER,
- PTHREAD_MUTEX_INITIALIZER};
+ TR_NAME *peer_gssname=NULL;
+ struct timespec wait_until = {0};
+ int exit_loop=0;
tr_debug("tr_trpc_thread: started");
- /* set up the mq for receiving */
- pthread_mutex_lock(&(cb_data.mutex)); /* hold this lock until we enter the main loop */
-
- tr_mq_lock(trpc->mq);
- tr_mq_set_notify_cb(trpc->mq, tr_trpc_mq_cb, (void *) &cb_data);
- tr_mq_unlock(trpc->mq);
-
+ /* Try to make the outgoing connection */
rc=trpc_connect(trpc);
if (rc!=TRP_SUCCESS) {
tr_notice("tr_trpc_thread: failed to initiate connection to %s:%d.",
trpc_get_server(trpc),
trpc_get_port(trpc));
+ trpc_mq_clear(trpc); /* clear the queue even though we did not connect */
} else {
- tr_debug("tr_trpc_thread: connected to peer %s", trpc->conn->peer->buf);
- while (1) {
- cb_data.msg_ready=0;
- pthread_cond_wait(&(cb_data.cond), &(cb_data.mutex));
- /* verify the condition */
- if (cb_data.msg_ready) {
- msg=trpc_mq_pop(trpc);
- if (msg==NULL) {
- /* no message in the queue */
- tr_err("tr_trpc_thread: notified of msg, but queue empty");
- break;
- }
-
- msg_type=tr_mq_msg_get_message(msg);
-
- if (0==strcmp(msg_type, TR_MQMSG_ABORT)) {
- tr_mq_msg_free(msg);
- break; /* exit loop */
- }
- else if (0==strcmp(msg_type, TR_MQMSG_TRPC_SEND)) {
- encoded_msg=tr_mq_msg_get_payload(msg);
- if (encoded_msg==NULL)
+ /* Retrieve the GSS name used by the peer for authentication */
+ peer_gssname=trp_connection_get_peer(trpc_get_conn(trpc));
+ if (peer_gssname==NULL) {
+ tr_err("tr_trpc_thread: could not duplicate peer_gssname.");
+ talloc_free(tmp_ctx);
+ return NULL;
+ }
+ tr_debug("tr_trpc_thread: connected to peer %.*s",
+ peer_gssname->len, peer_gssname->buf);
+
+ msg=tr_mq_msg_new(tmp_ctx, TR_MQMSG_TRPC_CONNECTED, TR_MQ_PRIO_HIGH);
+ tr_mq_msg_set_payload(msg, (void *)tr_dup_name(peer_gssname), tr_free_name_helper);
+ if (msg==NULL) {
+ tr_err("tr_trpc_thread: error allocating TR_MQ_MSG");
+ talloc_free(tmp_ctx);
+ return NULL;
+ }
+ trps_mq_add(trps, msg); /* steals msg context */
+ msg=NULL;
+
+ /* Loop until we get an abort message or until the connection is lost. */
+ while(!exit_loop) {
+ /* Wait up to 10 minutes for a message to be queued to send to the peer.
+ * Log a warning if we go longer than that, but don't give up. */
+ if (tr_mq_pop_timeout(10 * 60, &wait_until) != 0) {
+ tr_err("tr_trpc_thread: unable to set abort timeout");
+ break; /* immediately exit the loop, don't go through cleanup */
+ }
+
+ /* Pop a message from the queue. */
+ msg = trpc_mq_pop(trpc, &wait_until);
+ if (msg) {
+ msg_type = tr_mq_msg_get_message(msg);
+ if (0 == strcmp(msg_type, TR_MQMSG_ABORT)) {
+ tr_debug("tr_trpc_thread: received abort message from main thread.");
+ exit_loop = 1;
+ } else if (0 == strcmp(msg_type, TR_MQMSG_TRPC_SEND)) {
+ encoded_msg = tr_mq_msg_get_payload(msg);
+ if (encoded_msg == NULL)
tr_notice("tr_trpc_thread: null outgoing TRP message.");
else {
rc = trpc_send_msg(trpc, encoded_msg);
- if (rc!=TRP_SUCCESS) {
+ if (rc == TRP_SUCCESS) {
+ tr_debug("tr_trpc_thread: sent message.");
+ } else {
tr_notice("tr_trpc_thread: trpc_send_msg failed.");
- tr_mq_msg_free(msg);
- break;
+ /* Assume this means we lost the connection. */
+ exit_loop = 1;
}
}
- }
- else
+ } else
tr_notice("tr_trpc_thread: unknown message '%s' received.", msg_type);
tr_mq_msg_free(msg);
+ } else {
+ tr_warning("tr_trpc_thread: no outgoing messages to %.*s for 10 minutes",
+ peer_gssname->len, peer_gssname->buf);
}
}
}
- msg=tr_mq_msg_new(tmp_ctx, TR_MQMSG_TRPC_DISCONNECTED);
+ /* Send a DISCONNECTED message to the main thread */
+ tr_debug("tr_trpc_thread: notifying main thread of disconnection.");
+ msg=tr_mq_msg_new(tmp_ctx, TR_MQMSG_TRPC_DISCONNECTED, TR_MQ_PRIO_NORMAL);
tr_mq_msg_set_payload(msg, (void *)trpc, NULL); /* do not pass a free routine */
- if (msg==NULL)
+ if (msg==NULL) {
+ /* can't notify main thread */
tr_err("tr_trpc_thread: error allocating TR_MQ_MSG");
- else
- trps_mq_append(trps, msg);
+ } else {
+ trps_mq_add(trps, msg);
+ }
talloc_free(tmp_ctx);
+ tr_debug("tr_trpc_thread: thread terminating.");
return NULL;
}
/* convert an IDP realm into routing table entries. Outputs number in *n_routes */
-static TRP_RENTRY **tr_make_local_routes(TALLOC_CTX *mem_ctx,
+static TRP_ROUTE **tr_make_local_routes(TALLOC_CTX *mem_ctx,
TR_IDP_REALM *realm,
char *trust_router,
size_t *n_routes)
{
TALLOC_CTX *tmp_ctx=talloc_new(NULL);
- TR_APC *apc=NULL;
- TRP_RENTRY *new_entry=NULL;
- TRP_RENTRY **entries=NULL;
- size_t n_apcs=0, ii=0;
+ TR_APC *comm=NULL;
+ TRP_ROUTE *new_entry=NULL;
+ TRP_ROUTE **entries=NULL;
+ size_t n_comms=0, ii=0;
*n_routes=0;
- if (realm==NULL)
+ if ((realm==NULL) || (realm->origin!=TR_REALM_LOCAL))
goto cleanup;
- /* count apcs */
- for (apc=realm->apcs, n_apcs=0; apc!=NULL; apc=apc->next,n_apcs++) {}
+ /* count comms */
+ for (comm=realm->apcs, n_comms=0; comm!=NULL; comm=comm->next,n_comms++) {}
- entries=talloc_array(tmp_ctx, TRP_RENTRY *, n_apcs);
- for (apc=realm->apcs,ii=0; apc!=NULL; apc=apc->next, ii++) {
- new_entry=trp_rentry_new(entries);
+ entries=talloc_array(tmp_ctx, TRP_ROUTE *, n_comms);
+ for (comm=realm->apcs,ii=0; comm!=NULL; comm=comm->next, ii++) {
+ new_entry=trp_route_new(entries);
if (new_entry==NULL) {
tr_crit("tr_make_local_routes: unable to allocate entry.");
talloc_free(entries);
goto cleanup;
}
- trp_rentry_set_apc(new_entry, tr_dup_name(apc->id));
- trp_rentry_set_realm(new_entry, tr_dup_name(realm->realm_id));
- trp_rentry_set_peer(new_entry, tr_new_name("")); /* no peer, it's us */
- trp_rentry_set_metric(new_entry, 0);
- trp_rentry_set_trust_router(new_entry, tr_new_name(trust_router));
- trp_rentry_set_next_hop(new_entry, tr_new_name(""));
- /* we do not set selected (tbd later) or expiry/interval (not needed for
- * local routes) */
+ trp_route_set_comm(new_entry, tr_dup_name(comm->id));
+ trp_route_set_realm(new_entry, tr_dup_name(realm->realm_id));
+ trp_route_set_peer(new_entry, tr_new_name("")); /* no peer, it's us */
+ trp_route_set_metric(new_entry, 0);
+ trp_route_set_trust_router(new_entry, tr_new_name(trust_router));
+ trp_route_set_next_hop(new_entry, tr_new_name(""));
+ trp_route_set_local(new_entry, 1);
entries[ii]=new_entry;
}
talloc_steal(mem_ctx, entries);
- *n_routes=n_apcs;
+ *n_routes=n_comms;
cleanup:
talloc_free(tmp_ctx);
return entries;
}
-struct tr_trpc_status_change_cookie {
- TRPS_INSTANCE *trps;
- TRPC_INSTANCE *trpc;
- TRP_PEER *peer;
-};
-static void tr_trpc_status_change(TRP_CONNECTION *conn, void *cookie)
+void tr_peer_status_change(TRP_PEER *peer, void *cookie)
{
- struct tr_trpc_status_change_cookie *cook=talloc_get_type_abort(cookie, struct tr_trpc_status_change_cookie);
- /*TRPS_INSTANCE *trps=cook->trps;*/
- /* TRPC_INSTANCE *trpc=cook->trpc;*/
- TRP_PEER *peer=cook->peer;
- TR_NAME *gssname=trp_peer_get_gssname(peer);
-
- if (trp_connection_get_status(conn)==TRP_CONNECTION_UP)
- tr_debug("tr_trpc_status_change: connection to %.*s now up.", gssname->len, gssname->buf);
- else
- tr_debug("tr_trpc_status_change: connection to %.*s now down.", gssname->len, gssname->buf);
+ TRPS_INSTANCE *trps=talloc_get_type_abort(cookie, TRPS_INSTANCE);
+
+ if (TRP_SUCCESS!=trps_wildcard_route_req(trps, trp_peer_get_servicename(peer)))
+ tr_err("tr_send_wildcard: error sending wildcard route request.");
}
/* starts a trpc thread to connect to server:port */
-TRPC_INSTANCE *tr_trpc_initiate(TRPS_INSTANCE *trps, TRP_PEER *peer)
+TRP_RC tr_trpc_initiate(TRPS_INSTANCE *trps, TRP_PEER *peer, struct event *ev)
{
TALLOC_CTX *tmp_ctx=talloc_new(NULL);
TRPC_INSTANCE *trpc=NULL;
TRP_CONNECTION *conn=NULL;
struct trpc_thread_data *thread_data=NULL;
- struct tr_trpc_status_change_cookie *status_change_cookie=NULL;
+ TRP_RC rc=TRP_ERROR;
tr_debug("tr_trpc_initiate entered");
trpc=trpc_new(tmp_ctx);
if (trpc==NULL) {
tr_crit("tr_trpc_initiate: could not allocate TRPC_INSTANCE.");
+ rc=TRP_NOMEM;
goto cleanup;
}
tr_debug("tr_trpc_initiate: allocated trpc");
conn=trp_connection_new(trpc);
if (conn==NULL) {
tr_crit("tr_trpc_initiate: could not allocate TRP_CONNECTION.");
+ rc=TRP_NOMEM;
goto cleanup;
}
- status_change_cookie=talloc(conn, struct tr_trpc_status_change_cookie);
- if (status_change_cookie==NULL) {
- tr_crit("tr_trpc_initiate: could not allocate connection status cookie.");
- goto cleanup;
- }
- status_change_cookie->trps=trps;
- status_change_cookie->trpc=trpc;
- status_change_cookie->peer=peer;
- conn->status_change_cookie=status_change_cookie;
- status_change_cookie=NULL;
- conn->status_change_cb=tr_trpc_status_change;
-
trpc_set_conn(trpc, conn);
trpc_set_server(trpc, talloc_strdup(trpc, trp_peer_get_server(peer)));
trpc_set_port(trpc, trp_peer_get_port(peer));
- trpc_set_gssname(trpc, trp_peer_dup_gssname(peer));
+ trpc_set_gssname(trpc, trp_peer_dup_servicename(peer));
tr_debug("tr_trpc_initiate: allocated connection");
/* start thread */
thread_data=talloc(trpc, struct trpc_thread_data);
if (thread_data==NULL) {
tr_crit("tr_trpc_initiate: could not allocate struct trpc_thread_data.");
+ rc=TRP_NOMEM;
goto cleanup;
}
thread_data->trpc=trpc;
thread_data->trps=trps;
+ trps_add_trpc(trps, trpc); /* must add before starting thread */
pthread_create(trp_connection_get_thread(conn), NULL, tr_trpc_thread, thread_data);
- pthread_detach(*(trp_connection_get_thread(conn))); /* we will not rejoin the thread */
tr_debug("tr_trpc_initiate: started trpc thread");
- trps_add_trpc(trps, trpc);
+ rc=TRP_SUCCESS;
cleanup:
talloc_free(tmp_ctx);
- return trpc;
+ return rc;
}
/* Add local routes to the route table. */
{
TALLOC_CTX *tmp_ctx=talloc_new(NULL);
TR_IDP_REALM *cur=NULL;
- TRP_RENTRY **local_routes=NULL;
+ TRP_ROUTE **local_routes=NULL;
size_t n_routes=0;
size_t ii=0;
char *trust_router_name=talloc_asprintf(tmp_ctx, "%s:%d", cfg->internal->hostname, cfg->internal->trps_port);
if (trust_router_name==NULL)
return TRP_NOMEM;
- for (cur=cfg->idp_realms; cur!=NULL; cur=cur->next) {
+ for (cur=cfg->ctable->idp_realms; cur!=NULL; cur=cur->next) {
local_routes=tr_make_local_routes(tmp_ctx, cur, trust_router_name, &n_routes);
for (ii=0; ii<n_routes; ii++)
trps_add_route(trps, local_routes[ii]);
}
/* open missing connections to peers */
-TRP_RC tr_connect_to_peers(TRPS_INSTANCE *trps)
+TRP_RC tr_connect_to_peers(TRPS_INSTANCE *trps, struct event *ev)
{
TALLOC_CTX *tmp_ctx=talloc_new(NULL);
TRP_PTABLE_ITER *iter=trp_ptable_iter_new(tmp_ctx);
TRP_PEER *peer=NULL;
- TRPC_INSTANCE *trpc=NULL;
struct timespec curtime={0,0};
TRP_RC rc=TRP_ERROR;
peer=trp_ptable_iter_next(iter))
{
if (trps_find_trpc(trps, peer)==NULL) {
+ TR_NAME *label=trp_peer_get_label(peer);
tr_debug("tr_connect_to_peers: %.*s missing connection.",
- trp_peer_get_gssname(peer)->len, trp_peer_get_gssname(peer)->buf);
+ label->len, label->buf);
/* has it been long enough since we last tried? */
if (tr_conn_attempt_due(trps, peer, &curtime)) {
trp_peer_set_last_conn_attempt(peer, &curtime); /* we are trying again now */
- trpc=tr_trpc_initiate(trps, peer);
- if (trpc==NULL) {
+ if (tr_trpc_initiate(trps, peer, ev)!=TRP_SUCCESS) {
tr_err("tr_connect_to_peers: unable to initiate TRP connection to %s:%u.",
trp_peer_get_server(peer),
trp_peer_get_port(peer));
- }
+ }
}
}
}
* Updates configuration of objects that do not know about the config manager. */
void tr_config_changed(TR_CFG *new_cfg, void *cookie)
{
- TRPS_INSTANCE *trps=talloc_get_type_abort(cookie, TRPS_INSTANCE);
+ TR_INSTANCE *tr=talloc_get_type_abort(cookie, TR_INSTANCE);
+ TRPS_INSTANCE *trps=tr->trps;
+ char *table_str=NULL;
+
+ tr->cfgwatch->poll_interval.tv_sec=new_cfg->internal->cfg_poll_interval;
+ tr->cfgwatch->poll_interval.tv_usec=0;
+
+ tr->cfgwatch->settling_time.tv_sec=new_cfg->internal->cfg_settling_time;
+ tr->cfgwatch->settling_time.tv_usec=0;
+
+ /* These need to be updated */
+ tr->tids->hostname = new_cfg->internal->hostname;
+ tr->mons->hostname = new_cfg->internal->hostname;
+
+ /* Update the authorized monitoring gss names */
+ if (tr->mons->authorized_gss_names) {
+ tr_debug("tr_config_changed: freeing tr->mons->authorized_gss_names");
+ tr_gss_names_free(tr->mons->authorized_gss_names);
+ }
+ if (new_cfg->internal->monitoring_credentials != NULL) {
+ tr->mons->authorized_gss_names = tr_gss_names_dup(tr->mons, new_cfg->internal->monitoring_credentials);
+ } else {
+ tr->mons->authorized_gss_names = tr_gss_names_new(tr->mons);
+ }
+ if (tr->mons->authorized_gss_names == NULL) {
+ tr_err("tr_config_changed: Error configuring monitoring credentials");
+ }
+
trps_set_connect_interval(trps, new_cfg->internal->trp_connect_interval);
trps_set_update_interval(trps, new_cfg->internal->trp_update_interval);
trps_set_sweep_interval(trps, new_cfg->internal->trp_sweep_interval);
+ trps_set_ctable(trps, new_cfg->ctable);
+ trps_set_ptable(trps, new_cfg->peers);
+ trps_set_peer_status_callback(trps, tr_peer_status_change, (void *)trps);
trps_clear_rtable(trps); /* should we do this every time??? */
tr_add_local_routes(trps, new_cfg); /* should we do this every time??? */
trps_update_active_routes(trps); /* find new routes */
trps_update(trps, TRP_UPDATE_TRIGGERED); /* send any triggered routes */
- tr_trps_print_route_table(trps, stderr);
+ tr_print_config(new_cfg);
+ table_str=tr_trps_route_table_to_str(NULL, trps);
+ if (table_str!=NULL) {
+ tr_info(table_str);
+ talloc_free(table_str);
+ }
+ table_str=tr_trps_comm_table_to_str(NULL, trps);
+ if (table_str!=NULL) {
+ tr_info(table_str);
+ talloc_free(table_str);
+ }
}
projects / trust_router.git / blobdiff