2 * Copyright (c) 2012, 2015, JANET(UK)
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of JANET(UK) nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
25 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
27 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
29 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
31 * OF THE POSSIBILITY OF SUCH DAMAGE.
40 #include <tr_filter.h>
41 #include <tid_internal.h>
42 #include <tr_config.h>
48 /* Structure to hold TR instance and original request in one cookie */
49 typedef struct tr_resp_cookie {
55 static void tr_tidc_resp_handler (TIDC_INSTANCE *tidc,
60 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);
63 /* TBD -- handle concatentation of multiple responses to single req */
64 tids_send_response(((TR_RESP_COOKIE *)resp_cookie)->tr->tids,
65 ((TR_RESP_COOKIE *)resp_cookie)->orig_req,
71 static int tr_tids_req_handler (TIDS_INSTANCE *tids,
76 TIDC_INSTANCE *tidc = NULL;
77 TR_RESP_COOKIE resp_cookie;
78 TR_AAA_SERVER *aaa_servers = NULL;
80 TID_REQ *fwd_req = NULL;
81 TR_COMM *cfg_comm = NULL;
82 TR_COMM *cfg_apc = NULL;
83 TR_INSTANCE *tr = (TR_INSTANCE *) tr_in;
84 int oaction = TR_FILTER_ACTION_REJECT;
86 time_t expiration_interval;
88 if ((!tids) || (!orig_req) || (!resp) || (!tr)) {
89 tr_debug("tr_tids_req_handler: Bad parameters");
93 tr_debug("tr_tids_req_handler: Request received (conn = %d)! Realm = %s, Comm = %s", orig_req->conn,
94 orig_req->realm->buf, orig_req->comm->buf);
98 /* Duplicate the request, so we can modify and forward it */
99 if (NULL == (fwd_req = tid_dup_req(orig_req))) {
100 tr_debug("tr_tids_req_handler: Unable to duplicate request.");
104 if (NULL == (cfg_comm = tr_comm_lookup(tids->cookie, orig_req->comm))) {
105 tr_notice("tr_tids_req_hander: Request for unknown comm: %s.", orig_req->comm->buf);
106 tids_send_err_response(tids, orig_req, "Unknown community");
110 /* Check that the rp_realm matches the filter for the GSS name that
113 if ((!(tr)->rp_gss) ||
114 (!(tr)->rp_gss->filter)) {
115 tr_notice("tr_tids_req_handler: No GSS name for incoming request.");
116 tids_send_err_response(tids, orig_req, "No GSS name for request");
120 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)) ||
121 (TR_FILTER_ACTION_REJECT == oaction)) {
122 tr_notice("tr_tids_req_handler: RP realm (%s) does not match RP Realm filter for GSS name", orig_req->rp_realm->buf);
123 tids_send_err_response(tids, orig_req, "RP Realm filter error");
126 /* Check that the rp_realm is a member of the community in the request */
127 if (NULL == (tr_find_comm_rp(cfg_comm, orig_req->rp_realm))) {
128 tr_notice("tr_tids_req_handler: RP Realm (%s) not member of community (%s).", orig_req->rp_realm->buf, orig_req->comm->buf);
129 tids_send_err_response(tids, orig_req, "RP COI membership error");
133 /* Map the comm in the request from a COI to an APC, if needed */
134 if (TR_COMM_COI == cfg_comm->type) {
135 tr_debug("tr_tids_req_handler: Community was a COI, switching.");
136 /* TBD -- In theory there can be more than one? How would that work? */
137 if ((!cfg_comm->apcs) || (!cfg_comm->apcs->id)) {
138 tr_notice("No valid APC for COI %s.", orig_req->comm->buf);
139 tids_send_err_response(tids, orig_req, "No valid APC for community");
142 apc = tr_dup_name(cfg_comm->apcs->id);
144 /* Check that the APC is configured */
145 if (NULL == (cfg_apc = tr_comm_lookup(tids->cookie, apc))) {
146 tr_notice("tr_tids_req_hander: Request for unknown comm: %s.", apc->buf);
147 tids_send_err_response(tids, orig_req, "Unknown APC");
152 fwd_req->orig_coi = orig_req->comm;
154 /* Check that rp_realm is a member of this APC */
155 if (NULL == (tr_find_comm_rp(cfg_apc, orig_req->rp_realm))) {
156 tr_notice("tr_tids_req_hander: RP Realm (%s) not member of community (%s).", orig_req->rp_realm->buf, orig_req->comm->buf);
157 tids_send_err_response(tids, orig_req, "RP APC membership error");
162 /* Find the AAA server(s) for this request */
163 if (NULL == (aaa_servers = tr_idp_aaa_server_lookup((TR_INSTANCE *)tids->cookie,
166 tr_debug("tr_tids_req_handler: No AAA Servers for realm %s, defaulting.", orig_req->realm->buf);
167 if (NULL == (aaa_servers = tr_default_server_lookup ((TR_INSTANCE *)tids->cookie,
169 tr_notice("tr_tids_req_handler: No default AAA servers, discarded.");
170 tids_send_err_response(tids, orig_req, "No path to AAA Server(s) for realm");
174 /* if we aren't defaulting, check idp coi and apc membership */
175 if (NULL == (tr_find_comm_idp(cfg_comm, fwd_req->realm))) {
176 tr_notice("tr_tids_req_handler: IDP Realm (%s) not member of community (%s).", orig_req->realm->buf, orig_req->comm->buf);
177 tids_send_err_response(tids, orig_req, "IDP community membership error");
180 if ( cfg_apc && (NULL == (tr_find_comm_idp(cfg_apc, fwd_req->realm)))) {
181 tr_notice("tr_tids_req_handler: IDP Realm (%s) not member of APC (%s).", orig_req->realm->buf, orig_req->comm->buf);
182 tids_send_err_response(tids, orig_req, "IDP APC membership error");
187 /* send a TID request to the AAA server(s), and get the answer(s) */
188 /* TBD -- Handle multiple servers */
191 expiration_interval = cfg_apc->expiration_interval;
192 else expiration_interval = cfg_comm->expiration_interval;
193 if (fwd_req->expiration_interval)
194 fwd_req->expiration_interval = (expiration_interval < fwd_req->expiration_interval) ? expiration_interval : fwd_req->expiration_interval;
195 else fwd_req->expiration_interval = expiration_interval;
196 /* Create a TID client instance */
197 if (NULL == (tidc = tidc_create())) {
198 tr_crit("tr_tids_req_hander: Unable to allocate TIDC instance.");
199 tids_send_err_response(tids, orig_req, "Memory allocation failure");
202 /* Use the DH parameters from the original request */
203 /* TBD -- this needs to be fixed when we handle more than one req per conn */
204 tidc->client_dh = orig_req->tidc_dh;
206 /* Save information about this request for the response */
208 resp_cookie.orig_req = orig_req;
210 /* Set-up TID connection */
211 if (-1 == (fwd_req->conn = tidc_open_connection(tidc,
212 aaa_servers->hostname->buf,
214 &(fwd_req->gssctx)))) {
215 tr_notice("tr_tids_req_handler: Error in tidc_open_connection.");
216 tids_send_err_response(tids, orig_req, "Can't open connection to next hop TIDS");
220 /* Send a TID request */
221 if (0 > (rc = tidc_fwd_request(tidc, fwd_req, &tr_tidc_resp_handler, (void *)&resp_cookie))) {
222 tr_notice("Error from tidc_fwd_request, rc = %d.", rc);
223 tids_send_err_response(tids, orig_req, "Can't forward request to next hop TIDS");
224 tid_req_free(orig_req);
228 tid_req_free(orig_req);
232 static int tr_tids_gss_handler(gss_name_t client_name, TR_NAME *gss_name,
236 TR_INSTANCE *tr = (TR_INSTANCE *) tr_in;
238 if ((!client_name) || (!gss_name) || (!tr)) {
239 tr_debug("tr_tidc_gss_handler: Bad parameters.");
243 /* look up the RP client matching the GSS name */
244 if ((NULL == (rp = tr_rp_client_lookup(tr, gss_name)))) {
245 tr_debug("tr_tids_gss_handler: Unknown GSS name %s", gss_name->buf);
249 /* Store the rp client in the TR_INSTANCE structure for now...
250 * TBD -- fix me for new tasking model. */
252 tr_debug("Client's GSS Name: %s", gss_name->buf);
258 int main (int argc, const char *argv[])
260 TR_INSTANCE *tr = NULL;
261 struct dirent **cfg_files = NULL;
262 TR_CFG_RC rc = TR_CFG_SUCCESS; /* presume success */
265 /* parse command-line arguments? -- TBD */
267 /* Use standalone logging */
270 /* create a Trust Router instance */
271 if (NULL == (tr = tr_create())) {
272 tr_crit("Unable to create Trust Router instance, exiting.");
276 /* find the configuration files */
277 if (0 == (n = tr_find_config_files(&cfg_files))) {
278 tr_crit("Can't locate configuration files, exiting.");
282 if (TR_CFG_SUCCESS != tr_parse_config(tr, n, cfg_files)) {
283 tr_crit("Error decoding configuration information, exiting.");
287 /* apply initial configuration */
288 if (TR_CFG_SUCCESS != (rc = tr_apply_new_config(tr))) {
289 tr_crit("Error applying configuration, rc = %d.", rc);
293 /* print the loaded configuration */
294 tr_print_config(tr->active_cfg);
296 /* initialize the trust path query server instance */
297 if (0 == (tr->tids = tids_create ())) {
298 tr_crit("Error initializing Trust Path Query Server instance.");
302 /* start the trust path query server, won't return unless fatal error. */
303 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))) {
304 tr_crit("Error from Trust Path Query Server, err = %d.", err);
308 tids_destroy(tr->tids);