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41 #include <tr_filter.h>
42 #include <tid_internal.h>
43 #include <tr_config.h>
49 /* Structure to hold TR instance and original request in one cookie */
50 typedef struct tr_resp_cookie {
56 static void tr_tidc_resp_handler (TIDC_INSTANCE *tidc,
61 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);
64 /* TBD -- handle concatentation of multiple responses to single req */
65 tids_send_response(((TR_RESP_COOKIE *)resp_cookie)->tr->tids,
66 ((TR_RESP_COOKIE *)resp_cookie)->orig_req,
72 static int tr_tids_req_handler (TIDS_INSTANCE *tids,
77 TIDC_INSTANCE *tidc = NULL;
78 TR_RESP_COOKIE resp_cookie;
79 TR_AAA_SERVER *aaa_servers = NULL;
81 TID_REQ *fwd_req = NULL;
82 TR_COMM *cfg_comm = NULL;
83 TR_COMM *cfg_apc = NULL;
84 TR_INSTANCE *tr = (TR_INSTANCE *) tr_in;
85 int oaction = TR_FILTER_ACTION_REJECT;
87 time_t expiration_interval;
89 if ((!tids) || (!orig_req) || (!resp) || (!tr)) {
90 tr_debug("tr_tids_req_handler: Bad parameters");
94 tr_debug("tr_tids_req_handler: Request received (conn = %d)! Realm = %s, Comm = %s", orig_req->conn,
95 orig_req->realm->buf, orig_req->comm->buf);
99 /* Duplicate the request, so we can modify and forward it */
100 if (NULL == (fwd_req = tid_dup_req(orig_req))) {
101 tr_debug("tr_tids_req_handler: Unable to duplicate request.");
105 if (NULL == (cfg_comm = tr_comm_lookup(tids->cookie, orig_req->comm))) {
106 tr_notice("tr_tids_req_hander: Request for unknown comm: %s.", orig_req->comm->buf);
107 tids_send_err_response(tids, orig_req, "Unknown community");
111 /* Check that the rp_realm matches the filter for the GSS name that
114 if ((!(tr)->rp_gss) ||
115 (!(tr)->rp_gss->filter)) {
116 tr_notice("tr_tids_req_handler: No GSS name for incoming request.");
117 tids_send_err_response(tids, orig_req, "No GSS name for request");
121 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)) ||
122 (TR_FILTER_ACTION_REJECT == oaction)) {
123 tr_notice("tr_tids_req_handler: RP realm (%s) does not match RP Realm filter for GSS name", orig_req->rp_realm->buf);
124 tids_send_err_response(tids, orig_req, "RP Realm filter error");
127 /* Check that the rp_realm is a member of the community in the request */
128 if (NULL == (tr_find_comm_rp(cfg_comm, orig_req->rp_realm))) {
129 tr_notice("tr_tids_req_handler: RP Realm (%s) not member of community (%s).", orig_req->rp_realm->buf, orig_req->comm->buf);
130 tids_send_err_response(tids, orig_req, "RP COI membership error");
134 /* Map the comm in the request from a COI to an APC, if needed */
135 if (TR_COMM_COI == cfg_comm->type) {
136 tr_debug("tr_tids_req_handler: Community was a COI, switching.");
137 /* TBD -- In theory there can be more than one? How would that work? */
138 if ((!cfg_comm->apcs) || (!cfg_comm->apcs->id)) {
139 tr_notice("No valid APC for COI %s.", orig_req->comm->buf);
140 tids_send_err_response(tids, orig_req, "No valid APC for community");
143 apc = tr_dup_name(cfg_comm->apcs->id);
145 /* Check that the APC is configured */
146 if (NULL == (cfg_apc = tr_comm_lookup(tids->cookie, apc))) {
147 tr_notice("tr_tids_req_hander: Request for unknown comm: %s.", apc->buf);
148 tids_send_err_response(tids, orig_req, "Unknown APC");
153 fwd_req->orig_coi = orig_req->comm;
155 /* Check that rp_realm is a member of this APC */
156 if (NULL == (tr_find_comm_rp(cfg_apc, orig_req->rp_realm))) {
157 tr_notice("tr_tids_req_hander: RP Realm (%s) not member of community (%s).", orig_req->rp_realm->buf, orig_req->comm->buf);
158 tids_send_err_response(tids, orig_req, "RP APC membership error");
163 /* Find the AAA server(s) for this request */
164 if (NULL == (aaa_servers = tr_idp_aaa_server_lookup((TR_INSTANCE *)tids->cookie,
167 tr_debug("tr_tids_req_handler: No AAA Servers for realm %s, defaulting.", orig_req->realm->buf);
168 if (NULL == (aaa_servers = tr_default_server_lookup ((TR_INSTANCE *)tids->cookie,
170 tr_notice("tr_tids_req_handler: No default AAA servers, discarded.");
171 tids_send_err_response(tids, orig_req, "No path to AAA Server(s) for realm");
175 /* if we aren't defaulting, check idp coi and apc membership */
176 if (NULL == (tr_find_comm_idp(cfg_comm, fwd_req->realm))) {
177 tr_notice("tr_tids_req_handler: IDP Realm (%s) not member of community (%s).", orig_req->realm->buf, orig_req->comm->buf);
178 tids_send_err_response(tids, orig_req, "IDP community membership error");
181 if ( cfg_apc && (NULL == (tr_find_comm_idp(cfg_apc, fwd_req->realm)))) {
182 tr_notice("tr_tids_req_handler: IDP Realm (%s) not member of APC (%s).", orig_req->realm->buf, orig_req->comm->buf);
183 tids_send_err_response(tids, orig_req, "IDP APC membership error");
188 /* send a TID request to the AAA server(s), and get the answer(s) */
189 /* TBD -- Handle multiple servers */
192 expiration_interval = cfg_apc->expiration_interval;
193 else expiration_interval = cfg_comm->expiration_interval;
194 if (fwd_req->expiration_interval)
195 fwd_req->expiration_interval = (expiration_interval < fwd_req->expiration_interval) ? expiration_interval : fwd_req->expiration_interval;
196 else fwd_req->expiration_interval = expiration_interval;
197 /* Create a TID client instance */
198 if (NULL == (tidc = tidc_create())) {
199 tr_crit("tr_tids_req_hander: Unable to allocate TIDC instance.");
200 tids_send_err_response(tids, orig_req, "Memory allocation failure");
203 /* Use the DH parameters from the original request */
204 /* TBD -- this needs to be fixed when we handle more than one req per conn */
205 tidc->client_dh = orig_req->tidc_dh;
207 /* Save information about this request for the response */
209 resp_cookie.orig_req = orig_req;
211 /* Set-up TID connection */
212 if (-1 == (fwd_req->conn = tidc_open_connection(tidc,
213 aaa_servers->hostname->buf,
215 &(fwd_req->gssctx)))) {
216 tr_notice("tr_tids_req_handler: Error in tidc_open_connection.");
217 tids_send_err_response(tids, orig_req, "Can't open connection to next hop TIDS");
221 /* Send a TID request */
222 if (0 > (rc = tidc_fwd_request(tidc, fwd_req, &tr_tidc_resp_handler, (void *)&resp_cookie))) {
223 tr_notice("Error from tidc_fwd_request, rc = %d.", rc);
224 tids_send_err_response(tids, orig_req, "Can't forward request to next hop TIDS");
225 tid_req_free(orig_req);
229 tid_req_free(orig_req);
233 static int tr_tids_gss_handler(gss_name_t client_name, TR_NAME *gss_name,
237 TR_INSTANCE *tr = (TR_INSTANCE *) tr_in;
239 if ((!client_name) || (!gss_name) || (!tr)) {
240 tr_debug("tr_tidc_gss_handler: Bad parameters.");
244 /* look up the RP client matching the GSS name */
245 if ((NULL == (rp = tr_rp_client_lookup(tr, gss_name)))) {
246 tr_debug("tr_tids_gss_handler: Unknown GSS name %s", gss_name->buf);
250 /* Store the rp client in the TR_INSTANCE structure for now...
251 * TBD -- fix me for new tasking model. */
253 tr_debug("Client's GSS Name: %s", gss_name->buf);
258 /* Strip trailing / from a path name.*/
259 static void remove_trailing_slash(char *s) {
268 /* command-line option setup */
270 /* argp global parameters */
271 const char *argp_program_bug_address=PACKAGE_BUGREPORT; /* bug reporting address */
274 static const char doc[]=PACKAGE_NAME " - Moonshot Trust Router";
275 static const char arg_doc[]=""; /* string describing arguments, if any */
277 /* define the options here. Fields are:
278 * { long-name, short-name, variable name, options, help description } */
279 static const struct argp_option cmdline_options[] = {
280 { "config-dir", 'c', "DIR", 0, "Specify configuration file location (default is current directory)"},
284 /* structure for communicating with option parser */
285 struct cmdline_args {
289 /* parser for individual options - fills in a struct cmdline_args */
290 static error_t parse_option(int key, char *arg, struct argp_state *state)
292 /* get a shorthand to the command line argument structure, part of state */
293 struct cmdline_args *arguments=state->input;
298 /* somehow we got called without an argument */
299 return ARGP_ERR_UNKNOWN;
301 arguments->config_dir=arg;
305 return ARGP_ERR_UNKNOWN;
308 return 0; /* success */
311 /* assemble the argp parser */
312 static struct argp argp = {cmdline_options, parse_option, arg_doc, doc};
315 int main (int argc, char *argv[])
317 TR_INSTANCE *tr = NULL;
318 struct dirent **cfg_files = NULL;
319 TR_CFG_RC rc = TR_CFG_SUCCESS; /* presume success */
321 struct cmdline_args opts;
323 /* Use standalone logging */
326 /* parse command-line arguments */
330 /* parse the command line*/
331 argp_parse(&argp, argc, argv, 0, 0, &opts);
333 /* process options */
334 remove_trailing_slash(opts.config_dir);
336 /* create a Trust Router instance */
337 if (NULL == (tr = tr_create())) {
338 tr_crit("Unable to create Trust Router instance, exiting.");
342 /* find the configuration files -- n.b., tr_find_config_files()
343 * allocates memory to cfg_files which we must later free */
344 tr_debug("Reading configuration files from %s/", opts.config_dir);
345 n = tr_find_config_files(opts.config_dir, &cfg_files);
347 tr_crit("Can't locate configuration files, exiting.");
348 tr_free_config_file_list(n, &cfg_files);
352 if (TR_CFG_SUCCESS != tr_parse_config(tr, opts.config_dir, n, cfg_files)) {
353 tr_crit("Error decoding configuration information, exiting.");
354 tr_free_config_file_list(n, &cfg_files);
358 /* we are now done with the config filenames, free those */
359 tr_free_config_file_list(n, &cfg_files);
361 /* apply initial configuration */
362 if (TR_CFG_SUCCESS != (rc = tr_apply_new_config(tr))) {
363 tr_crit("Error applying configuration, rc = %d.", rc);
367 /* initialize the trust path query server instance */
368 if (0 == (tr->tids = tids_create ())) {
369 tr_crit("Error initializing Trust Path Query Server instance.");
373 /* start the trust path query server, won't return unless fatal error. */
374 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))) {
375 tr_crit("Error from Trust Path Query Server, err = %d.", err);
379 tids_destroy(tr->tids);