#include <stdlib.h>
#include <jansson.h>
#include <argp.h>
+#include <event2/event.h>
+#include <talloc.h>
+#include <sys/time.h>
+#include <signal.h>
+#include <pthread.h>
-#include <tr.h>
-#include <tr_filter.h>
#include <tid_internal.h>
+#include <tr_tid.h>
+#include <tr_trp.h>
#include <tr_config.h>
-#include <tr_comm.h>
-#include <tr_idp.h>
-#include <tr_rp.h>
+#include <tr_event.h>
+#include <tr_cfgwatch.h>
+#include <tr.h>
#include <tr_debug.h>
-/* Structure to hold TR instance and original request in one cookie */
-typedef struct tr_resp_cookie {
- TR_INSTANCE *tr;
- TID_REQ *orig_req;
-} TR_RESP_COOKIE;
-
-
-static void tr_tidc_resp_handler (TIDC_INSTANCE *tidc,
- TID_REQ *req,
- TID_RESP *resp,
- void *resp_cookie)
-{
- tr_debug("tr_tidc_resp_handler: Response received (conn = %d)! Realm = %s, Community = %s.", ((TR_RESP_COOKIE *)resp_cookie)->orig_req->conn, resp->realm->buf, resp->comm->buf);
- req->resp_rcvd = 1;
-
- /* TBD -- handle concatentation of multiple responses to single req */
- tids_send_response(((TR_RESP_COOKIE *)resp_cookie)->tr->tids,
- ((TR_RESP_COOKIE *)resp_cookie)->orig_req,
- resp);
-
- return;
-}
-
-static int tr_tids_req_handler (TIDS_INSTANCE *tids,
- TID_REQ *orig_req,
- TID_RESP *resp,
- void *tr_in)
-{
- TIDC_INSTANCE *tidc = NULL;
- TR_RESP_COOKIE resp_cookie;
- TR_AAA_SERVER *aaa_servers = NULL;
- TR_NAME *apc = NULL;
- TID_REQ *fwd_req = NULL;
- TR_COMM *cfg_comm = NULL;
- TR_COMM *cfg_apc = NULL;
- TR_INSTANCE *tr = (TR_INSTANCE *) tr_in;
- int oaction = TR_FILTER_ACTION_REJECT;
- int rc = 0;
- time_t expiration_interval;
-
- if ((!tids) || (!orig_req) || (!resp) || (!tr)) {
- tr_debug("tr_tids_req_handler: Bad parameters");
- return -1;
- }
-
- tr_debug("tr_tids_req_handler: Request received (conn = %d)! Realm = %s, Comm = %s", orig_req->conn,
- orig_req->realm->buf, orig_req->comm->buf);
- if (tids)
- tids->req_count++;
+#define TALLOC_DEBUG_ENABLE 1
- /* Duplicate the request, so we can modify and forward it */
- if (NULL == (fwd_req = tid_dup_req(orig_req))) {
- tr_debug("tr_tids_req_handler: Unable to duplicate request.");
- return -1;
- }
-
- if (NULL == (cfg_comm = tr_comm_lookup(tids->cookie, orig_req->comm))) {
- tr_notice("tr_tids_req_hander: Request for unknown comm: %s.", orig_req->comm->buf);
- tids_send_err_response(tids, orig_req, "Unknown community");
- return -1;
- }
-
- /* Check that the rp_realm matches the filter for the GSS name that
- * was received. */
-
- if ((!(tr)->rp_gss) ||
- (!(tr)->rp_gss->filter)) {
- tr_notice("tr_tids_req_handler: No GSS name for incoming request.");
- tids_send_err_response(tids, orig_req, "No GSS name for request");
- return -1;
- }
-
- if ((TR_FILTER_NO_MATCH == tr_filter_process_rp_permitted(orig_req->rp_realm, (tr)->rp_gss->filter, orig_req->cons, &fwd_req->cons, &oaction)) ||
- (TR_FILTER_ACTION_REJECT == oaction)) {
- tr_notice("tr_tids_req_handler: RP realm (%s) does not match RP Realm filter for GSS name", orig_req->rp_realm->buf);
- tids_send_err_response(tids, orig_req, "RP Realm filter error");
- return -1;
- }
- /* Check that the rp_realm is a member of the community in the request */
- if (NULL == (tr_find_comm_rp(cfg_comm, orig_req->rp_realm))) {
- tr_notice("tr_tids_req_handler: RP Realm (%s) not member of community (%s).", orig_req->rp_realm->buf, orig_req->comm->buf);
- tids_send_err_response(tids, orig_req, "RP COI membership error");
- return -1;
- }
-
- /* Map the comm in the request from a COI to an APC, if needed */
- if (TR_COMM_COI == cfg_comm->type) {
- tr_debug("tr_tids_req_handler: Community was a COI, switching.");
- /* TBD -- In theory there can be more than one? How would that work? */
- if ((!cfg_comm->apcs) || (!cfg_comm->apcs->id)) {
- tr_notice("No valid APC for COI %s.", orig_req->comm->buf);
- tids_send_err_response(tids, orig_req, "No valid APC for community");
- return -1;
- }
- apc = tr_dup_name(cfg_comm->apcs->id);
-
- /* Check that the APC is configured */
- if (NULL == (cfg_apc = tr_comm_lookup(tids->cookie, apc))) {
- tr_notice("tr_tids_req_hander: Request for unknown comm: %s.", apc->buf);
- tids_send_err_response(tids, orig_req, "Unknown APC");
- return -1;
- }
-
- fwd_req->comm = apc;
- fwd_req->orig_coi = orig_req->comm;
-
- /* Check that rp_realm is a member of this APC */
- if (NULL == (tr_find_comm_rp(cfg_apc, orig_req->rp_realm))) {
- tr_notice("tr_tids_req_hander: RP Realm (%s) not member of community (%s).", orig_req->rp_realm->buf, orig_req->comm->buf);
- tids_send_err_response(tids, orig_req, "RP APC membership error");
- return -1;
- }
- }
-
- /* Find the AAA server(s) for this request */
- if (NULL == (aaa_servers = tr_idp_aaa_server_lookup((TR_INSTANCE *)tids->cookie,
- orig_req->realm,
- orig_req->comm))) {
- tr_debug("tr_tids_req_handler: No AAA Servers for realm %s, defaulting.", orig_req->realm->buf);
- if (NULL == (aaa_servers = tr_default_server_lookup ((TR_INSTANCE *)tids->cookie,
- orig_req->comm))) {
- tr_notice("tr_tids_req_handler: No default AAA servers, discarded.");
- tids_send_err_response(tids, orig_req, "No path to AAA Server(s) for realm");
- return -1;
- }
- } else {
- /* if we aren't defaulting, check idp coi and apc membership */
- if (NULL == (tr_find_comm_idp(cfg_comm, fwd_req->realm))) {
- tr_notice("tr_tids_req_handler: IDP Realm (%s) not member of community (%s).", orig_req->realm->buf, orig_req->comm->buf);
- tids_send_err_response(tids, orig_req, "IDP community membership error");
- return -1;
- }
- if ( cfg_apc && (NULL == (tr_find_comm_idp(cfg_apc, fwd_req->realm)))) {
- tr_notice("tr_tids_req_handler: IDP Realm (%s) not member of APC (%s).", orig_req->realm->buf, orig_req->comm->buf);
- tids_send_err_response(tids, orig_req, "IDP APC membership error");
- return -1;
- }
- }
-
- /* send a TID request to the AAA server(s), and get the answer(s) */
- /* TBD -- Handle multiple servers */
-
- if (cfg_apc)
- expiration_interval = cfg_apc->expiration_interval;
- else expiration_interval = cfg_comm->expiration_interval;
- if (fwd_req->expiration_interval)
- fwd_req->expiration_interval = (expiration_interval < fwd_req->expiration_interval) ? expiration_interval : fwd_req->expiration_interval;
- else fwd_req->expiration_interval = expiration_interval;
- /* Create a TID client instance */
- if (NULL == (tidc = tidc_create())) {
- tr_crit("tr_tids_req_hander: Unable to allocate TIDC instance.");
- tids_send_err_response(tids, orig_req, "Memory allocation failure");
- return -1;
- }
- /* Use the DH parameters from the original request */
- /* TBD -- this needs to be fixed when we handle more than one req per conn */
- tidc->client_dh = orig_req->tidc_dh;
-
- /* Save information about this request for the response */
- resp_cookie.tr = tr;
- resp_cookie.orig_req = orig_req;
-
- /* Set-up TID connection */
- if (-1 == (fwd_req->conn = tidc_open_connection(tidc,
- aaa_servers->hostname->buf,
- TID_PORT,
- &(fwd_req->gssctx)))) {
- tr_notice("tr_tids_req_handler: Error in tidc_open_connection.");
- tids_send_err_response(tids, orig_req, "Can't open connection to next hop TIDS");
- return -1;
- };
-
- /* Send a TID request */
- if (0 > (rc = tidc_fwd_request(tidc, fwd_req, &tr_tidc_resp_handler, (void *)&resp_cookie))) {
- tr_notice("Error from tidc_fwd_request, rc = %d.", rc);
- tids_send_err_response(tids, orig_req, "Can't forward request to next hop TIDS");
- tid_req_free(orig_req);
- return -1;
- }
-
- tid_req_free(orig_req);
- return 0;
-}
-
-static int tr_tids_gss_handler(gss_name_t client_name, TR_NAME *gss_name,
- void *tr_in)
-{
- TR_RP_CLIENT *rp;
- TR_INSTANCE *tr = (TR_INSTANCE *) tr_in;
-
- if ((!client_name) || (!gss_name) || (!tr)) {
- tr_debug("tr_tidc_gss_handler: Bad parameters.");
- return -1;
- }
-
- /* look up the RP client matching the GSS name */
- if ((NULL == (rp = tr_rp_client_lookup(tr, gss_name)))) {
- tr_debug("tr_tids_gss_handler: Unknown GSS name %s", gss_name->buf);
- return -1;
- }
-
- /* Store the rp client in the TR_INSTANCE structure for now...
- * TBD -- fix me for new tasking model. */
- (tr)->rp_gss = rp;
- tr_debug("Client's GSS Name: %s", gss_name->buf);
-
- return 0;
-}
+/***** command-line option handling / setup *****/
/* Strip trailing / from a path name.*/
static void remove_trailing_slash(char *s) {
}
}
-/* command-line option setup */
-
/* argp global parameters */
const char *argp_program_bug_address=PACKAGE_BUGREPORT; /* bug reporting address */
static struct argp argp = {cmdline_options, parse_option, arg_doc, doc};
-int main (int argc, char *argv[])
+/***** talloc error handling *****/
+/* called when talloc tries to abort */
+static void tr_abort(const char *reason)
+{
+ 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 */
+
+static void configure_signals(void)
+{
+ sigset_t signals;
+ /* ignore SIGPIPE */
+ sigemptyset(&signals);
+ sigaddset(&signals, SIGPIPE);
+ pthread_sigmask(SIG_BLOCK, &signals, NULL);
+}
+
+int main(int argc, char *argv[])
+{
+ TALLOC_CTX *main_ctx=NULL;
+
TR_INSTANCE *tr = NULL;
- struct dirent **cfg_files = NULL;
- TR_CFG_RC rc = TR_CFG_SUCCESS; /* presume success */
- int err = 0, n = 0;
struct cmdline_args opts;
+ struct event_base *ev_base;
+ struct tr_socket_event tids_ev;
+ struct event *cfgwatch_ev;
+
+ configure_signals();
+
+ /* 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);
/* Use standalone logging */
tr_log_open();
- /* parse command-line arguments */
+ /***** parse command-line arguments *****/
/* set defaults */
opts.config_dir=".";
/* process options */
remove_trailing_slash(opts.config_dir);
- /* create a Trust Router instance */
- if (NULL == (tr = tr_create())) {
+ /***** create a Trust Router instance *****/
+ if (NULL == (tr = tr_create(main_ctx))) {
tr_crit("Unable to create Trust Router instance, exiting.");
return 1;
}
- /* find the configuration files -- n.b., tr_find_config_files()
- * allocates memory to cfg_files which we must later free */
- tr_debug("Reading configuration files from %s/", opts.config_dir);
- n = tr_find_config_files(opts.config_dir, &cfg_files);
- if (n <= 0) {
- tr_crit("Can't locate configuration files, exiting.");
- tr_free_config_file_list(n, &cfg_files);
- exit(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;
}
- if (TR_CFG_SUCCESS != tr_parse_config(tr, opts.config_dir, n, cfg_files)) {
- tr_crit("Error decoding configuration information, exiting.");
- tr_free_config_file_list(n, &cfg_files);
- exit(1);
+ /***** process configuration *****/
+ tr->cfgwatch=tr_cfgwatch_create(tr);
+ if (tr->cfgwatch == NULL) {
+ tr_crit("Unable to create configuration watcher object, exiting.");
+ return 1;
}
-
- /* we are now done with the config filenames, free those */
- tr_free_config_file_list(n, &cfg_files);
-
- /* apply initial configuration */
- if (TR_CFG_SUCCESS != (rc = tr_apply_new_config(tr))) {
- tr_crit("Error applying configuration, rc = %d.", rc);
- exit(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;
+ if (0 != tr_read_and_apply_config(tr->cfgwatch)) {
+ tr_crit("Error reading configuration, exiting.");
+ return 1;
}
- /* print the loaded configuration */
- tr_print_config(tr->active_cfg);
+ /***** 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;
+ }
- /* initialize the trust path query server instance */
- if (0 == (tr->tids = tids_create ())) {
+ /* 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;
+ }
+
+ /*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,
+ tr->trps,
+ &tids_ev)) {
tr_crit("Error initializing Trust Path Query Server instance.");
- exit(1);
+ return 1;
}
- /* start the trust path query server, won't return unless fatal error. */
- if (0 != (err = tids_start(tr->tids, &tr_tids_req_handler, &tr_tids_gss_handler, tr->active_cfg->internal->hostname, tr->active_cfg->internal->tids_port, (void *)tr))) {
- tr_crit("Error from Trust Path Query Server, err = %d.", err);
- exit(err);
+ /* install TRP handler events */
+ if (TRP_SUCCESS != tr_trps_event_init(ev_base, tr)) {
+ tr_crit("Error initializing Trust Path Query Server instance.");
+ return 1;
}
- tids_destroy(tr->tids);
- tr_destroy(tr);
- exit(0);
+ tr_event_loop_run(ev_base); /* does not return until we are done */
+
+ tr_destroy(tr); /* thanks to talloc, should destroy everything */
+
+ talloc_free(main_ctx);
+ return 0;
}