/*
- * Copyright (c) 2012, JANET(UK)
+ * Copyright (c) 2012, 2015, JANET(UK)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
*/
#include <stdio.h>
+#include <stdlib.h>
+#include <jansson.h>
+#include <argp.h>
+#include <event2/event.h>
+#include <talloc.h>
+#include <sys/time.h>
#include <tr.h>
+#include <tid_internal.h>
+#include <tr_tid.h>
+#include <tr_trp.h>
+#include <tr_config.h>
+#include <tr_event.h>
+#include <tr_cfgwatch.h>
+#include <tr_debug.h>
-int static tids_req_handler (TIDS_INSTANCE * tids,
- TID_REQ *req,
- TID_RESP **resp,
- void *cookie)
+#define TALLOC_DEBUG_ENABLE 1
+#define DEBUG_HARDCODED_PEER_TABLE 1
+#define DEBUG_PING_SELF 0
+
+/***** command-line option handling / setup *****/
+
+/* Strip trailing / from a path name.*/
+static void remove_trailing_slash(char *s) {
+ size_t n;
+
+ n=strlen(s);
+ if(s[n-1]=='/') {
+ s[n-1]='\0';
+ }
+}
+
+/* argp global parameters */
+const char *argp_program_bug_address=PACKAGE_BUGREPORT; /* bug reporting address */
+
+/* doc strings */
+static const char doc[]=PACKAGE_NAME " - Moonshot Trust Router";
+static const char arg_doc[]=""; /* string describing arguments, if any */
+
+/* define the options here. Fields are:
+ * { long-name, short-name, variable name, options, help description } */
+static const struct argp_option cmdline_options[] = {
+ { "config-dir", 'c', "DIR", 0, "Specify configuration file location (default is current directory)"},
+ { NULL }
+};
+
+/* structure for communicating with option parser */
+struct cmdline_args {
+ char *config_dir;
+};
+
+/* parser for individual options - fills in a struct cmdline_args */
+static error_t parse_option(int key, char *arg, struct argp_state *state)
{
- printf("Request received! Realm = %s, Comm = %s\n", req->realm->buf, req->comm->buf);
- if (tids)
- tids->req_count++;
+ /* get a shorthand to the command line argument structure, part of state */
+ struct cmdline_args *arguments=state->input;
- return 0;
+ switch (key) {
+ case 'c':
+ if (arg == NULL) {
+ /* somehow we got called without an argument */
+ return ARGP_ERR_UNKNOWN;
+ }
+ arguments->config_dir=arg;
+ break;
+
+ default:
+ return ARGP_ERR_UNKNOWN;
+ }
+
+ return 0; /* success */
}
-int main (int argc, const char *argv[])
+/* assemble the argp parser */
+static struct argp argp = {cmdline_options, parse_option, arg_doc, doc};
+
+
+/***** talloc error handling *****/
+/* called when talloc tries to abort */
+static void tr_abort(const char *reason)
{
- TIDS_INSTANCE *tids = 0;
- int err;
- FILE *cfg_file = 0;
+ tr_crit("tr_abort: Critical error, talloc aborted. Reason: %s", reason);
+ abort();
+}
+
+#if TALLOC_DEBUG_ENABLE
+static void tr_talloc_log(const char *msg)
+{
+ tr_debug("talloc: %s", msg);
+}
+#endif /* TALLOC_DEBUG_ENABLE */
+
+
+#if DEBUG_PING_SELF
+struct thingy {
+ TRPS_INSTANCE *trps;
+ struct event *ev;
+};
+
+static void debug_ping(evutil_socket_t fd, short what, void *arg)
+{
+ TALLOC_CTX *tmp_ctx=talloc_new(NULL);
+ struct thingy *thingy=(struct thingy *)arg;
+ TRPS_INSTANCE *trps=thingy->trps;
+ TRP_REQ *req=NULL;
+ TR_MSG msg;
+ char *encoded=NULL;
+ struct timeval interval={1, 0};
+ static int count=10;
+ TR_NAME *name=NULL;
+
+ tr_debug("debug_ping entered");
+ if (trps->trpc==NULL)
+ tr_trpc_initiate(trps, trps->hostname, trps->port);
+
+ /* create a TRP route request msg */
+ req=trp_req_new(tmp_ctx);
+ name=tr_new_name("community");
+ trp_req_set_comm(req, name);
+ name=tr_new_name("realm");
+ trp_req_set_realm(req, name);
+ tr_msg_set_trp_req(&msg, req);
+ encoded=tr_msg_encode(&msg);
+ if (encoded==NULL)
+ tr_err("debug_ping: error encoding TRP message.");
+ else {
+ tr_debug("debug_ping: sending message");
+ trps_send_msg(trps, NULL, encoded);
+ tr_msg_free_encoded(encoded);
+ }
+ if (count-- > 0)
+ evtimer_add(thingy->ev, &interval);
+}
+#endif /* DEBUG_PING_SELF */
+
+int main(int argc, char *argv[])
+{
+ TALLOC_CTX *main_ctx=NULL;
+
+ TR_INSTANCE *tr = NULL;
+ struct cmdline_args opts;
+ struct event_base *ev_base;
+ struct tr_socket_event tids_ev;
+ TR_TRPS_EVENTS *trps_ev;
+ struct event *cfgwatch_ev;
+#if DEBUG_PING_SELF
+ struct event *debug_ping_ev;
+ struct timeval notime={0, 0};
+ struct thingy thingy={NULL};
+#endif /* DEBUG_PING_SELF */
- /* parse command-line arguments -- TBD */
+ /* we're going to be multithreaded, so disable null context tracking */
+ talloc_set_abort_fn(tr_abort);
+ talloc_disable_null_tracking();
+#if TALLOC_DEBUG_ENABLE
+ talloc_set_log_fn(tr_talloc_log);
+#endif /* TALLOC_DEBUG_ENABLE */
+ main_ctx=talloc_new(NULL);
- /* open the configuration file*/
- cfg_file = fopen ("tr.cfg", "r");
+ /* Use standalone logging */
+ tr_log_open();
- /* read initial configuration */
- if (0 != (err = tr_read_config (cfg_file))) {
- printf ("Error reading configuration, err = %d.\n", err);
+ /***** parse command-line arguments *****/
+ /* set defaults */
+ opts.config_dir=".";
+
+ /* parse the command line*/
+ argp_parse(&argp, argc, argv, 0, 0, &opts);
+
+ /* process options */
+ remove_trailing_slash(opts.config_dir);
+
+ /***** create a Trust Router instance *****/
+ if (NULL == (tr = tr_create(main_ctx))) {
+ tr_crit("Unable to create Trust Router instance, exiting.");
+ return 1;
+ }
+
+ /***** initialize the trust path query server instance *****/
+ if (NULL == (tr->tids = tids_create (tr))) {
+ tr_crit("Error initializing Trust Path Query Server instance.");
+ return 1;
+ }
+
+ /***** initialize the trust router protocol server instance *****/
+ if (NULL == (tr->trps = trps_new(tr))) {
+ tr_crit("Error initializing Trust Router Protocol Server instance.");
+ return 1;
+ }
+
+ /***** process configuration *****/
+ tr->cfgwatch=tr_cfgwatch_create(tr);
+ if (tr->cfgwatch == NULL) {
+ tr_crit("Unable to create configuration watcher object, exiting.");
+ return 1;
+ }
+ tr->cfgwatch->config_dir=opts.config_dir;
+ tr->cfgwatch->cfg_mgr=tr->cfg_mgr;
+ tr->cfgwatch->update_cb=tr_config_changed; /* handle configuration changes */
+ tr->cfgwatch->update_cookie=(void *)(tr->trps);
+ if (0 != tr_read_and_apply_config(tr->cfgwatch)) {
+ tr_crit("Error reading configuration, exiting.");
+ return 1;
+ }
+
+ /***** Set up the event loop *****/
+ ev_base=tr_event_loop_init(); /* Set up the event loop */
+ if (ev_base==NULL) {
+ tr_crit("Error initializing event loop.");
+ return 1;
+ }
+
+ /* install configuration file watching events */
+ tr->cfgwatch->poll_interval=(struct timeval) {1,0}; /* set poll interval in {sec, usec} */
+ tr->cfgwatch->settling_time=(struct timeval) {5,0}; /* delay for changes to settle before updating */
+ /* TODO: pull these settings out of the configuration files */
+
+ /* already set config_dir, fstat_list and n_files earlier */
+ if (0 != tr_cfgwatch_event_init(ev_base, tr->cfgwatch, &cfgwatch_ev)) {
+ tr_crit("Error initializing configuration file watcher.");
return 1;
}
- /* initialize the trust path query server instance */
- if (0 == (tids = tids_create ())) {
- printf ("Error initializing Trust Path Query Server instance.\n");
+ /*tr_status_event_init();*/ /* install status reporting events */
+
+ /* install TID server events */
+ if (0 != tr_tids_event_init(ev_base,
+ tr->tids,
+ tr->cfg_mgr,
+ &tids_ev)) {
+ tr_crit("Error initializing Trust Path Query Server instance.");
return 1;
}
- /* start the trust path query server, won't return unless there is an error. */
- if (0 != (err = tids_start(tids, &tids_req_handler, NULL))) {
- printf ("Error starting Trust Path Query Server, err = %d.\n", err);
- return err;
+ /* install TRP handler events */
+ trps_ev=tr_trps_events_new(main_ctx);
+ if (0 != tr_trps_event_init(ev_base,
+ tr->trps,
+ tr->cfg_mgr,
+ trps_ev)) {
+ tr_crit("Error initializing Trust Path Query Server instance.");
+ return 1;
}
- tids_destroy(tids);
+#if DEBUG_HARDCODED_PEER_TABLE
+ {
+ TRP_PEER *hc_peer=NULL;
+ char *s=NULL;
+
+ hc_peer=trp_peer_new(main_ctx); /* will later be stolen by ptable context */
+ if (hc_peer==NULL) {
+ tr_crit("Unable to allocate new peer. Aborting.");
+ return 1;
+ }
+ trp_peer_set_server(hc_peer, "epsilon.vmnet");
+ trp_peer_set_gssname(hc_peer, tr_new_name("tr-epsilon-vmnet@apc.painless-security.com"));
+ switch (tr->trps->port) {
+ case 10000:
+ trp_peer_set_port(hc_peer, 10001);
+ break;
+ case 10001:
+ trp_peer_set_port(hc_peer, 10000);
+ break;
+ default:
+ tr_crit("Cannot use hardcoded peer table with port other than 10000 or 10001.");
+ return 1;
+ }
+ if (TRP_SUCCESS != trps_add_peer(tr->trps, hc_peer)) {
+ tr_crit("Unable to add peer.");
+ return 1;
+ }
+
+ s=trp_ptable_to_str(main_ctx, tr->trps->ptable, NULL, NULL);
+ tr_debug("Peer Table:\n%s\n", s);
+ talloc_free(s);
+ }
+#endif /* DEBUG_HARDCODED_PEER_TABLE */
+
+#if DEBUG_PING_SELF
+ /* for debugging, send a message to peers on a timer */
+ debug_ping_ev=evtimer_new(ev_base, debug_ping, (void *)&thingy);
+ thingy.trps=tr->trps;
+ thingy.ev=debug_ping_ev;
+ evtimer_add(debug_ping_ev, ¬ime);
+#endif /* DEBUG_PING_SELF */
+
+ tr_event_loop_run(ev_base); /* does not return until we are done */
+
+ /* TODO: ensure talloc is properly used so this actually works */
+ tr_destroy(tr); /* thanks to talloc, should destroy everything */
+
+ talloc_free(main_ctx);
return 0;
}
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