#include <talloc.h>
+#include <trust_router/tr_dh.h>
#include <tid_internal.h>
#include <tr_filter.h>
#include <tr_comm.h>
#include <gsscon.h>
#include <trp_internal.h>
#include <tr_config.h>
+#include <tr_mq.h>
+#include <tr_util.h>
#include <tr_tid.h>
-/* Structure to hold TR instance and original request in one cookie */
+/* Structure to hold data for the tid response callback */
typedef struct tr_resp_cookie {
- TIDS_INSTANCE *tids;
- TID_REQ *orig_req;
+ int thread_id;
+ TID_RESP *resp;
} TR_RESP_COOKIE;
/* hold a tids instance and a config manager */
TRPS_INSTANCE *trps;
};
+static void tr_tidc_resp_handler(TIDC_INSTANCE *tidc,
+ TID_REQ *req,
+ TID_RESP *resp,
+ void *resp_cookie)
+{
+ TR_RESP_COOKIE *cookie=talloc_get_type_abort(resp_cookie, TR_RESP_COOKIE);
+
+ tr_debug("tr_tidc_resp_handler: Response received! Realm = %s, Community = %s, result = %s.",
+ resp->realm->buf,
+ resp->comm->buf,
+ (TID_SUCCESS==resp->result)?"success":"error");
+
+ if (resp->error_path!=NULL)
+ tr_debug("tr_tids_resp_handler: error_path is set.");
+ cookie->resp=tid_resp_dup(cookie, resp);
+}
+
+/* data for AAA req forwarding threads */
+struct tr_tids_fwd_cookie {
+ int thread_id;
+ pthread_mutex_t mutex; /* lock on the mq (separate from the locking within the mq, see below) */
+ TR_MQ *mq; /* messages from thread to main process; set to NULL to disable response */
+ TR_NAME *aaa_hostname;
+ DH *dh_params;
+ TID_REQ *fwd_req; /* the req to duplicate */
+};
+
+static int tr_tids_fwd_cookie_destructor(void *obj)
+{
+ struct tr_tids_fwd_cookie *c=talloc_get_type_abort(obj, struct tr_tids_fwd_cookie);
+ if (c->aaa_hostname!=NULL)
+ tr_free_name(c->aaa_hostname);
+ if (c->dh_params!=NULL)
+ tr_destroy_dh_params(c->dh_params);
+ return 0;
+}
+
+/* Block until we get the lock, returns 0 on success.
+ * The mutex is used to protect changes to the mq pointer in
+ * a thread's cookie. The master thread sets this to null to indicate
+ * that it has abandoned the thread and the message queue is no longer
+ * valid. This is unrelated to the locking in the message queue
+ * implementation itself. */
+static int tr_tids_fwd_get_mutex(struct tr_tids_fwd_cookie *cookie)
+{
+ if (cookie==NULL)
+ return -1;
+
+ return (pthread_mutex_lock(&(cookie->mutex)));
+}
+
+static int tr_tids_fwd_release_mutex(struct tr_tids_fwd_cookie *cookie)
+{
+ if (cookie==NULL)
+ return -1;
+
+ return (pthread_mutex_unlock(&(cookie->mutex)));
+}
+
+/* values for messages */
+#define TR_TID_MQMSG_SUCCESS "tid success"
+#define TR_TID_MQMSG_FAILURE "tid failure"
+
+/* Thread main for sending and receiving a request to a single AAA server */
+static void *tr_tids_req_fwd_thread(void *arg)
+{
+ TALLOC_CTX *tmp_ctx=talloc_new(NULL);
+ struct tr_tids_fwd_cookie *args=talloc_get_type_abort(arg, struct tr_tids_fwd_cookie);
+ TIDC_INSTANCE *tidc=tidc_create();
+ TR_MQ_MSG *msg=NULL;
+ TR_RESP_COOKIE *cookie=NULL;
+ int rc=0;
+ int success=0;
+
+ talloc_steal(tmp_ctx, args); /* take responsibility for the cookie */
+
+ if (tidc!=NULL)
+ talloc_steal(tmp_ctx, tidc);
+
+ /* create the cookie we will use for our response */
+ cookie=talloc(tmp_ctx, TR_RESP_COOKIE);
+ if (cookie==NULL) {
+ tr_notice("tr_tids_req_fwd_thread: unable to allocate response cookie.");
+ success=0;
+ goto cleanup;
+ }
+ cookie->thread_id=args->thread_id;
+ tr_debug("tr_tids_req_fwd_thread: thread %d started.", cookie->thread_id);
+
+ /* Create a TID client instance */
+ if (tidc==NULL) {
+ tr_crit("tr_tids_req_fwd_thread: Unable to allocate TIDC instance.");
+ /*tids_send_err_response(tids, orig_req, "Memory allocation failure");*/
+ /* TODO: encode reason for failure */
+ success=0;
+ goto cleanup;
+ }
+
+ /* Set-up TID connection */
+ if (-1==(args->fwd_req->conn = tidc_open_connection(tidc,
+ args->aaa_hostname->buf,
+ TID_PORT, /* TODO: make this configurable */
+ &(args->fwd_req->gssctx)))) {
+ tr_notice("tr_tids_req_fwd_thread: Error in tidc_open_connection.");
+ /* tids_send_err_response(tids, orig_req, "Can't open connection to next hop TIDS"); */
+ /* TODO: encode reason for failure */
+ success=0;
+ goto cleanup;
+ };
+ tr_debug("tr_tids_req_fwd_thread: thread %d opened TID connection to %s.",
+ cookie->thread_id,
+ args->aaa_hostname->buf);
-static void tr_tidc_resp_handler (TIDC_INSTANCE *tidc,
- TID_REQ *req,
- TID_RESP *resp,
- void *resp_cookie)
+ /* Send a TID request. */
+ if (0 > (rc = tidc_fwd_request(tidc, args->fwd_req, tr_tidc_resp_handler, (void *)cookie))) {
+ tr_notice("Error from tidc_fwd_request, rc = %d.", rc);
+ success=0;
+ goto cleanup;
+ }
+ /* cookie->resp should now contain our copy of the response */
+ success=1;
+ tr_debug("tr_tids_req_fwd_thread: thread %d received response.");
+
+cleanup:
+ /* Notify parent thread of the response, if it's still listening. */
+ if (0!=tr_tids_fwd_get_mutex(args)) {
+ tr_notice("tr_tids_req_fwd_thread: thread %d unable to acquire mutex.", cookie->thread_id);
+ } else if (NULL!=args->mq) {
+ /* mq is still valid, so we can queue our response */
+ tr_debug("tr_tids_req_fwd_thread: thread %d using valid msg queue.", cookie->thread_id);
+ if (success)
+ msg=tr_mq_msg_new(tmp_ctx, TR_TID_MQMSG_SUCCESS, TR_MQ_PRIO_NORMAL);
+ else
+ msg=tr_mq_msg_new(tmp_ctx, TR_TID_MQMSG_FAILURE, TR_MQ_PRIO_NORMAL);
+
+ if (msg==NULL)
+ tr_notice("tr_tids_req_fwd_thread: thread %d unable to allocate response msg.", cookie->thread_id);
+
+ tr_mq_msg_set_payload(msg, (void *)cookie, NULL);
+ if (NULL!=cookie)
+ talloc_steal(msg, cookie); /* attach this to the msg so we can forget about it */
+ tr_mq_add(args->mq, msg);
+ talloc_steal(NULL, args); /* take out of our tmp_ctx; master thread now responsible for freeing */
+ tr_debug("tr_tids_req_fwd_thread: thread %d queued response message.", cookie->thread_id);
+ if (0!=tr_tids_fwd_release_mutex(args))
+ tr_notice("tr_tids_req_fwd_thread: Error releasing mutex.");
+ }
+
+ talloc_free(tmp_ctx);
+ return NULL;
+}
+
+/* Merges r2 into r1 if they are compatible. */
+static TID_RC tr_tids_merge_resps(TID_RESP *r1, TID_RESP *r2)
{
- 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)->tids,
- ((TR_RESP_COOKIE *)resp_cookie)->orig_req,
- resp);
-
- return;
+ /* ensure these are compatible replies */
+ if ((r1->result!=TID_SUCCESS) || (r2->result!=TID_SUCCESS))
+ return TID_ERROR;
+
+ if ((0!=tr_name_cmp(r1->rp_realm, r2->rp_realm)) ||
+ (0!=tr_name_cmp(r1->realm, r2->realm)) ||
+ (0!=tr_name_cmp(r1->comm, r2->comm)))
+ return TID_ERROR;
+
+ tid_srvr_blk_add(r1->servers, tid_srvr_blk_dup(r1, r2->servers));
+ return TID_SUCCESS;
}
-static int tr_tids_req_handler (TIDS_INSTANCE *tids,
- TID_REQ *orig_req,
- TID_RESP *resp,
- void *cookie_in)
+/**
+ * Process a TID request
+ *
+ * Return value of -1 means to send a TID_ERROR response. Fill in resp->err_msg or it will
+ * be returned as a generic error.
+ *
+ * @param tids
+ * @param orig_req
+ * @param resp
+ * @param cookie_in
+ * @return
+ */
+static int tr_tids_req_handler(TIDS_INSTANCE *tids,
+ TID_REQ *orig_req,
+ TID_RESP *resp,
+ void *cookie_in)
{
- TALLOC_CTX *tmp_ctx=talloc_new(NULL);;
- TIDC_INSTANCE *tidc = NULL;
- TR_RESP_COOKIE resp_cookie;
- TR_AAA_SERVER *aaa_servers = NULL;
+ TALLOC_CTX *tmp_ctx=talloc_new(NULL);
+ TR_AAA_SERVER *aaa_servers=NULL, *this_aaa=NULL;
+ int n_aaa=0;
+ int idp_shared=0;
+ TR_AAA_SERVER_ITER *aaa_iter=NULL;
+ pthread_t aaa_thread[TR_TID_MAX_AAA_SERVERS];
+ struct tr_tids_fwd_cookie *aaa_cookie[TR_TID_MAX_AAA_SERVERS]={NULL};
+ TID_RESP *aaa_resp[TR_TID_MAX_AAA_SERVERS]={NULL};
+ TR_RP_CLIENT *rp_client=NULL;
+ TR_RP_CLIENT_ITER *rpc_iter=NULL;
TR_NAME *apc = NULL;
TID_REQ *fwd_req = NULL;
TR_COMM *cfg_comm = NULL;
TR_COMM *cfg_apc = NULL;
- int oaction = TR_FILTER_ACTION_REJECT;
- int rc = 0;
+ TR_FILTER_ACTION oaction = TR_FILTER_ACTION_REJECT;
time_t expiration_interval=0;
struct tr_tids_event_cookie *cookie=talloc_get_type_abort(cookie_in, struct tr_tids_event_cookie);
TR_CFG_MGR *cfg_mgr=cookie->cfg_mgr;
TRPS_INSTANCE *trps=cookie->trps;
TRP_ROUTE *route=NULL;
+ TR_MQ *mq=NULL;
+ TR_MQ_MSG *msg=NULL;
+ unsigned int n_responses=0;
+ unsigned int n_failed=0;
+ struct timespec ts_abort={0};
+ unsigned int resp_frac_numer=cfg_mgr->active->internal->tid_resp_numer;
+ unsigned int resp_frac_denom=cfg_mgr->active->internal->tid_resp_denom;
+ TR_RESP_COOKIE *payload=NULL;
+ TR_FILTER_TARGET *target=NULL;
+ int ii=0;
int retval=-1;
if ((!tids) || (!orig_req) || (!resp)) {
tids->req_count++;
/* Duplicate the request, so we can modify and forward it */
- if (NULL == (fwd_req = tid_dup_req(orig_req))) {
+ if (NULL == (fwd_req=tid_dup_req(orig_req))) {
tr_debug("tr_tids_req_handler: Unable to duplicate request.");
- retval=-1;
+ retval=-1; /* response will be a generic internal error */
goto cleanup;
}
+ talloc_steal(tmp_ctx, fwd_req);
- if (NULL == (cfg_comm = tr_comm_table_find_comm(cfg_mgr->active->ctable, orig_req->comm))) {
+ if (NULL == (cfg_comm=tr_comm_table_find_comm(cfg_mgr->active->ctable, 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");
+ tid_resp_set_err_msg(resp, tr_new_name("Unknown community"));
retval=-1;
goto cleanup;
}
- /* Check that the rp_realm matches the filter for the GSS name that
- * was received. */
+ /* We now need to apply the filters associated with the RP client handing us the request.
+ * It is possible (or even likely) that more than one client is associated with the GSS
+ * name we got from the authentication. We will apply all of them in an arbitrary order.
+ * For this to result in well-defined behavior, either only accept or only reject filter
+ * lines should be used, or a unique GSS name must be given for each RP realm. */
- if ((!tids->rp_gss) ||
- (!tids->rp_gss->filter)) {
+ if (!tids->gss_name) {
tr_notice("tr_tids_req_handler: No GSS name for incoming request.");
- tids_send_err_response(tids, orig_req, "No GSS name for request");
+ tid_resp_set_err_msg(resp, tr_new_name("No GSS name for request"));
retval=-1;
goto cleanup;
}
- if ((TR_FILTER_NO_MATCH == tr_filter_process_rp_permitted(orig_req->rp_realm,
- tids->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");
+ /* Keep original constraints, may add more from the filter. These will be added to orig_req as
+ * well. Need to verify that this is acceptable behavior, but it's what we've always done. */
+ fwd_req->cons=orig_req->cons;
+
+ target=tr_filter_target_tid_req(tmp_ctx, orig_req);
+ if (target==NULL) {
+ tr_crit("tid_req_handler: Unable to allocate filter target, cannot apply filter!");
+ tid_resp_set_err_msg(resp, tr_new_name("Incoming TID request filter error"));
retval=-1;
goto cleanup;
}
+
+ rpc_iter=tr_rp_client_iter_new(tmp_ctx);
+ if (rpc_iter==NULL) {
+ tr_err("tid_req_handler: Unable to allocate RP client iterator.");
+ retval=-1;
+ goto cleanup;
+ }
+ for (rp_client=tr_rp_client_iter_first(rpc_iter, cfg_mgr->active->rp_clients);
+ rp_client != NULL;
+ rp_client=tr_rp_client_iter_next(rpc_iter)) {
+
+ if (!tr_gss_names_matches(rp_client->gss_names, tids->gss_name))
+ continue; /* skip any that don't match the GSS name */
+
+ if (TR_FILTER_MATCH == tr_filter_apply(target,
+ tr_filter_set_get(rp_client->filters,
+ TR_FILTER_TYPE_TID_INBOUND),
+ &(fwd_req->cons),
+ &oaction))
+ break; /* Stop looking, oaction is set */
+ }
+
+ /* We get here whether or not a filter matched. If tr_filter_apply() doesn't match, it returns
+ * a default action of reject, so we don't have to check why we exited the loop. */
+ if (oaction != TR_FILTER_ACTION_ACCEPT) {
+ tr_notice("tr_tids_req_handler: Incoming TID request rejected by filter for GSS name", orig_req->rp_realm->buf);
+ tid_resp_set_err_msg(resp, tr_new_name("Incoming TID request filter error"));
+ retval = -1;
+ goto cleanup;
+ }
+
/* Check that the rp_realm is a member of the community in the request */
- if (NULL == (tr_comm_find_rp(cfg_mgr->active->ctable, cfg_comm, orig_req->rp_realm))) {
+ if (NULL == tr_comm_find_rp(cfg_mgr->active->ctable, 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");
+ tid_resp_set_err_msg(resp, tr_new_name("RP COI membership error"));
retval=-1;
goto cleanup;
}
if (orig_req->orig_coi!=NULL) {
tr_notice("tr_tids_req_handler: community %s is COI but COI to APC mapping already occurred. Dropping request.",
orig_req->comm->buf);
- tids_send_err_response(tids, orig_req, "Second COI to APC mapping would result, permitted only once.");
+ tid_resp_set_err_msg(resp, tr_new_name("Second COI to APC mapping would result, permitted only once."));
retval=-1;
goto cleanup;
}
/* 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");
+ tid_resp_set_err_msg(resp, tr_new_name("No valid APC for community"));
retval=-1;
goto cleanup;
}
/* Check that the APC is configured */
if (NULL == (cfg_apc = tr_comm_table_find_comm(cfg_mgr->active->ctable, apc))) {
tr_notice("tr_tids_req_hander: Request for unknown comm: %s.", apc->buf);
- tids_send_err_response(tids, orig_req, "Unknown APC");
+ tid_resp_set_err_msg(resp, tr_new_name("Unknown APC"));
retval=-1;
goto cleanup;
}
/* Check that rp_realm is a member of this APC */
if (NULL == (tr_comm_find_rp(cfg_mgr->active->ctable, 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");
+ tid_resp_set_err_msg(resp, tr_new_name("RP APC membership error"));
retval=-1;
goto cleanup;
}
tr_debug("tr_tids_req_handler: looking up route.");
route=trps_get_selected_route(trps, orig_req->comm, orig_req->realm);
if (route==NULL) {
- tr_notice("tr_tids_req_handler: no route table entry found for realm (%s) in community (%s).",
- orig_req->realm->buf, orig_req->comm->buf);
- tids_send_err_response(tids, orig_req, "Missing trust route error");
- retval=-1;
- goto cleanup;
- }
- tr_debug("tr_tids_req_handler: found route.");
- if (trp_route_is_local(route)) {
- tr_debug("tr_tids_req_handler: route is local.");
- aaa_servers = tr_idp_aaa_server_lookup(cfg_mgr->active->ctable->idp_realms,
- orig_req->realm,
- orig_req->comm);
- } else {
- tr_debug("tr_tids_req_handler: route not local.");
- aaa_servers = tr_aaa_server_new(tmp_ctx, trp_route_get_next_hop(route));
- }
-
- /* Find the AAA server(s) for this request */
- if (NULL == aaa_servers) {
- 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 (cfg_mgr->active->default_servers,
- orig_req->comm))) {
+ /* No route. Use default AAA servers if we have them. */
+ tr_debug("tr_tids_req_handler: No route for realm %s, defaulting.", orig_req->realm->buf);
+ if (NULL == (aaa_servers = tr_default_server_lookup(cfg_mgr->active->default_servers,
+ 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");
- retval=-1;
+ tid_resp_set_err_msg(resp, tr_new_name("No path to AAA Server(s) for realm"));
+ retval = -1;
goto cleanup;
}
+ idp_shared = 0;
} else {
- /* if we aren't defaulting, check idp coi and apc membership */
+ /* Found a route. Determine the AAA servers or next hop address. */
+ tr_debug("tr_tids_req_handler: found route.");
+ if (trp_route_is_local(route)) {
+ tr_debug("tr_tids_req_handler: route is local.");
+ aaa_servers = tr_idp_aaa_server_lookup(cfg_mgr->active->ctable->idp_realms,
+ orig_req->realm,
+ orig_req->comm,
+ &idp_shared);
+ } else {
+ tr_debug("tr_tids_req_handler: route not local.");
+ aaa_servers = tr_aaa_server_new(tmp_ctx, trp_route_get_next_hop(route));
+ idp_shared = 0;
+ }
+
+ /* Since we aren't defaulting, check idp coi and apc membership */
if (NULL == (tr_comm_find_idp(cfg_mgr->active->ctable, 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");
+ tid_resp_set_err_msg(resp, tr_new_name("IDP community membership error"));
retval=-1;
goto cleanup;
}
if ( cfg_apc && (NULL == (tr_comm_find_idp(cfg_mgr->active->ctable, 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");
+ tid_resp_set_err_msg(resp, tr_new_name("IDP APC membership error"));
retval=-1;
goto cleanup;
}
}
- /* send a TID request to the AAA server(s), and get the answer(s) */
- /* TBD -- Handle multiple servers */
+ /* Make sure we came through with a AAA server. If not, we can't handle the request. */
+ if (NULL == aaa_servers) {
+ tr_notice("tr_tids_req_handler: no route or AAA server for realm (%s) in community (%s).",
+ orig_req->realm->buf, orig_req->comm->buf);
+ tid_resp_set_err_msg(resp, tr_new_name("Missing trust route error"));
+ retval = -1;
+ goto cleanup;
+ }
+ /* send a TID request to the AAA server(s), and get the answer(s) */
+ tr_debug("tr_tids_req_handler: sending TID request(s).");
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");
+
+ /* Set up message queue for replies from req forwarding threads */
+ mq=tr_mq_new(tmp_ctx);
+ if (mq==NULL) {
+ tr_notice("tr_tids_req_handler: unable to allocate message queue.");
retval=-1;
goto cleanup;
}
- /* 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.tids = tids;
- resp_cookie.orig_req = orig_req;
+ tr_debug("tr_tids_req_handler: message queue allocated.");
- /* 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");
+ /* start threads */
+ aaa_iter=tr_aaa_server_iter_new(tmp_ctx);
+ if (aaa_iter==NULL) {
+ tr_notice("tr_tids_req_handler: unable to allocate AAA server iterator.");
retval=-1;
goto cleanup;
- };
+ }
+ for (n_aaa=0, this_aaa=tr_aaa_server_iter_first(aaa_iter, aaa_servers);
+ this_aaa!=NULL;
+ n_aaa++, this_aaa=tr_aaa_server_iter_next(aaa_iter)) {
+ tr_debug("tr_tids_req_handler: Preparing to start thread %d.", n_aaa);
+
+ aaa_cookie[n_aaa]=talloc(tmp_ctx, struct tr_tids_fwd_cookie);
+ if (aaa_cookie[n_aaa]==NULL) {
+ tr_notice("tr_tids_req_handler: unable to allocate cookie for AAA thread %d.", n_aaa);
+ retval=-1;
+ goto cleanup;
+ }
+ talloc_set_destructor((void *)(aaa_cookie[n_aaa]), tr_tids_fwd_cookie_destructor);
+ /* fill in the cookie. To ensure the thread has valid data even if we exit first and
+ * abandon it, duplicate anything pointed to (except the mq). */
+ aaa_cookie[n_aaa]->thread_id=n_aaa;
+ if (0!=pthread_mutex_init(&(aaa_cookie[n_aaa]->mutex), NULL)) {
+ tr_notice("tr_tids_req_handler: unable to init mutex for AAA thread %d.", n_aaa);
+ retval=-1;
+ goto cleanup;
+ }
+ aaa_cookie[n_aaa]->mq=mq;
+ aaa_cookie[n_aaa]->aaa_hostname=tr_dup_name(this_aaa->hostname);
+ aaa_cookie[n_aaa]->dh_params=tr_dh_dup(orig_req->tidc_dh);
+ aaa_cookie[n_aaa]->fwd_req=tid_dup_req(fwd_req);
+ talloc_steal(aaa_cookie[n_aaa], aaa_cookie[n_aaa]->fwd_req);
+ tr_debug("tr_tids_req_handler: cookie %d initialized.", n_aaa);
+
+ /* Take the cookie out of tmp_ctx before starting thread. If thread starts, it becomes
+ * responsible for freeing it until it queues a response. If we did not do this, the possibility
+ * exists that this function exits, freeing the cookie, before the thread takes the cookie
+ * out of our tmp_ctx. This would cause a segfault or talloc error in the thread. */
+ talloc_steal(NULL, aaa_cookie[n_aaa]);
+ if (0!=pthread_create(&(aaa_thread[n_aaa]), NULL, tr_tids_req_fwd_thread, aaa_cookie[n_aaa])) {
+ talloc_steal(tmp_ctx, aaa_cookie[n_aaa]); /* thread start failed; steal this back */
+ tr_notice("tr_tids_req_handler: unable to start AAA thread %d.", n_aaa);
+ retval=-1;
+ goto cleanup;
+ }
+ tr_debug("tr_tids_req_handler: thread %d started.", n_aaa);
+ }
- /* 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");
+ /* determine expiration time */
+ if (0!=tr_mq_pop_timeout(cfg_mgr->active->internal->tid_req_timeout, &ts_abort)) {
+ tr_notice("tr_tids_req_handler: unable to read clock for timeout.");
retval=-1;
goto cleanup;
}
+ /* wait for responses */
+ tr_debug("tr_tids_req_handler: waiting for response(s).");
+ n_responses=0;
+ n_failed=0;
+ while (((n_responses+n_failed)<n_aaa) &&
+ (NULL!=(msg=tr_mq_pop(mq, &ts_abort)))) {
+ /* process message */
+ if (0==strcmp(tr_mq_msg_get_message(msg), TR_TID_MQMSG_SUCCESS)) {
+ payload=talloc_get_type_abort(tr_mq_msg_get_payload(msg), TR_RESP_COOKIE);
+ talloc_steal(tmp_ctx, payload); /* put this back in our context */
+ aaa_resp[payload->thread_id]=payload->resp; /* save pointers to these */
+
+ if (payload->resp->result==TID_SUCCESS) {
+ tr_tids_merge_resps(resp, payload->resp);
+ n_responses++;
+ } else {
+ n_failed++;
+ tr_notice("tr_tids_req_handler: TID error received from AAA server %d: %.*s",
+ payload->thread_id,
+ payload->resp->err_msg->len,
+ payload->resp->err_msg->buf);
+ }
+ } else if (0==strcmp(tr_mq_msg_get_message(msg), TR_TID_MQMSG_FAILURE)) {
+ /* failure */
+ n_failed++;
+ payload=talloc_get_type(tr_mq_msg_get_payload(msg), TR_RESP_COOKIE);
+ if (payload!=NULL)
+ talloc_steal(tmp_ctx, payload); /* put this back in our context */
+ else {
+ /* this means the thread was unable to allocate a response cookie, and we thus cannot determine which thread it was. This is bad and should never happen in a working system.. Give up. */
+ tr_notice("tr_tids_req_handler: TID request thread sent invalid reply. Aborting!");
+ retval=-1;
+ goto cleanup;
+ }
+ tr_notice("tr_tids_req_handler: TID request for AAA server %d failed.",
+ payload->thread_id);
+ } else {
+ /* unexpected message */
+ tr_err("tr_tids_req_handler: Unexpected message received. Aborting!");
+ retval=-1;
+ goto cleanup;
+ }
+
+ /* Set the cookie pointer to NULL so we know we've dealt with this one. The
+ * cookie itself is in our tmp_ctx, which we'll free before exiting. Let it hang
+ * around in case we are still using pointers to elements of the cookie. */
+ aaa_cookie[payload->thread_id]=NULL;
+
+ tr_mq_msg_free(msg);
+
+ /* check whether we've received enough responses to exit */
+ if ((idp_shared && (n_responses>0)) ||
+ (resp_frac_denom*n_responses>=resp_frac_numer*n_aaa))
+ break;
+ }
+
+ tr_debug("tr_tids_req_handler: done waiting for responses. %d responses, %d failures.",
+ n_responses, n_failed);
+ /* Inform any remaining threads that we will no longer handle their responses. */
+ for (ii=0; ii<n_aaa; ii++) {
+ if (aaa_cookie[ii]!=NULL) {
+ if (0!=tr_tids_fwd_get_mutex(aaa_cookie[ii]))
+ tr_notice("tr_tids_req_handler: unable to get mutex for AAA thread %d.", ii);
+
+ aaa_cookie[ii]->mq=NULL; /* threads will not try to respond through a null mq */
+
+ if (0!=tr_tids_fwd_release_mutex(aaa_cookie[ii]))
+ tr_notice("tr_tids_req_handler: unable to release mutex for AAA thread %d.", ii);
+ }
+ }
+
+ /* Now all threads have either replied (and aaa_cookie[ii] is null) or have been told not to
+ * reply (by setting their mq pointer to null). However, some may have responded by placing
+ * a message on the mq after we last checked but before we set their mq pointer to null. These
+ * will not know that we gave up on them, so we must free their cookies for them. We can just
+ * go through any remaining messages on the mq to identify these threads. By putting them in
+ * our context instead of freeing them directly, we ensure we don't accidentally invalidate
+ * any of our own pointers into the structure before this function exits. */
+ while (NULL!=(msg=tr_mq_pop(mq, NULL))) {
+ payload=(TR_RESP_COOKIE *)tr_mq_msg_get_payload(msg);
+ if (aaa_cookie[payload->thread_id]!=NULL)
+ talloc_steal(tmp_ctx, aaa_cookie[payload->thread_id]);
+
+ tr_mq_msg_free(msg);
+ }
+
+ if (n_responses==0) {
+ /* No requests succeeded, so this will be an error */
+ retval = -1;
+
+ /* If we got any error responses, send an arbitrarily chosen one. */
+ for (ii=0; ii<n_aaa; ii++) {
+ if (aaa_resp[ii] != NULL) {
+ tid_resp_cpy(resp, aaa_resp[ii]);
+ goto cleanup;
+ }
+ }
+ /* No error responses at all, so generate our own error. */
+ tid_resp_set_err_msg(resp, tr_new_name("Unable to contact AAA server(s)."));
+ goto cleanup;
+ }
+
/* success! */
retval=0;
static int tr_tids_gss_handler(gss_name_t client_name, TR_NAME *gss_name,
void *data)
{
- TR_RP_CLIENT *rp;
struct tr_tids_event_cookie *cookie=talloc_get_type_abort(data, struct tr_tids_event_cookie);
TIDS_INSTANCE *tids = cookie->tids;
TR_CFG_MGR *cfg_mgr = cookie->cfg_mgr;
return -1;
}
- /* look up the RP client matching the GSS name */
- if ((NULL == (rp = tr_rp_client_lookup(cfg_mgr->active->rp_clients, gss_name)))) {
- tr_debug("tr_tids_gss_handler: Unknown GSS name %s", gss_name->buf);
+ /* Ensure at least one client exists using this GSS name */
+ if (NULL == tr_rp_client_lookup(cfg_mgr->active->rp_clients, gss_name)) {
+ tr_debug("tr_tids_gss_handler: Unknown GSS name %.*s", gss_name->len, gss_name->buf);
return -1;
}
- /* Store the rp client */
- tids->rp_gss = rp;
- tr_debug("Client's GSS Name: %s", gss_name->buf);
+ /* Store the GSS name */
+ tids->gss_name = tr_dup_name(gss_name);
+ tr_debug("Client's GSS Name: %.*s", gss_name->len, gss_name->buf);
return 0;
}
TALLOC_CTX *tmp_ctx=talloc_new(NULL);
struct tr_tids_event_cookie *cookie=NULL;
int retval=0;
- size_t ii=0;
+ int ii=0;
if (tids_ev == NULL) {
tr_debug("tr_tids_event_init: Null tids_ev.");
talloc_steal(tids, cookie);
/* get a tids listener */
- tids_ev->n_sock_fd=tids_get_listener(tids,
- tr_tids_req_handler,
- tr_tids_gss_handler,
- cfg_mgr->active->internal->hostname,
- cfg_mgr->active->internal->tids_port,
- (void *)cookie,
- tids_ev->sock_fd,
- TR_MAX_SOCKETS);
+ tids_ev->n_sock_fd = (int)tids_get_listener(tids,
+ tr_tids_req_handler,
+ tr_tids_gss_handler,
+ cfg_mgr->active->internal->hostname,
+ cfg_mgr->active->internal->tids_port,
+ (void *)cookie,
+ tids_ev->sock_fd,
+ TR_MAX_SOCKETS);
if (tids_ev->n_sock_fd==0) {
tr_crit("Error opening TID server socket.");
retval=1;
projects / trust_router.git / blobdiff