2 * Copyright (c) 2012, JANET(UK)
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6 * modification, are permitted provided that the following conditions
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39 #include <tr_filter.h>
40 #include <trust_router/tid.h>
41 #include <tr_config.h>
46 /* Structure to hold TR instance and original request in one cookie */
47 typedef struct tr_resp_cookie {
53 static void tr_tidc_resp_handler (TIDC_INSTANCE *tidc,
58 fprintf(stderr, "tr_tidc_resp_handler: Response received (conn = %d)! Realm = %s, Community = %s.\n", ((TR_RESP_COOKIE *)resp_cookie)->orig_req->conn, resp->realm->buf, resp->comm->buf);
61 /* TBD -- handle concatentation of multiple responses to single req */
62 tids_send_response(((TR_RESP_COOKIE *)resp_cookie)->tr->tids,
63 ((TR_RESP_COOKIE *)resp_cookie)->orig_req,
69 static int tr_tids_req_handler (TIDS_INSTANCE *tids,
74 TIDC_INSTANCE *tidc = NULL;
75 TR_RESP_COOKIE resp_cookie;
76 TR_AAA_SERVER *aaa_servers = NULL;
78 TID_REQ *fwd_req = NULL;
79 TR_COMM *cfg_comm = NULL;
80 TR_COMM *cfg_apc = NULL;
81 TR_CONSTRAINT *ocons = NULL;
82 int oaction = TR_FILTER_ACTION_REJECT;
85 if ((!tids) || (!orig_req) || (!resp) || (!(*resp)) || (!tr)) {
86 fprintf(stderr, "tids_req_handler: Bad parameters\n");
90 fprintf(stdout, "tr_tids_req_handler: Request received (conn = %d)! Realm = %s, Comm = %s\n", orig_req->conn,
91 orig_req->realm->buf, orig_req->comm->buf);
95 /* Duplicate the request, so we can modify and forward it */
96 if (NULL == (fwd_req = tid_dup_req(orig_req))) {
97 fprintf(stderr, "tr_tids_req_handler: Unable to duplicate request.\n");
101 if (NULL == (cfg_comm = tr_comm_lookup((TR_INSTANCE *)tids->cookie, orig_req->comm))) {
102 fprintf(stderr, "tr_tids_req_hander: Request for unknown comm: %s.\n", orig_req->comm->buf);
103 tids_send_err_response(tids, orig_req, "Unknown community");
107 /* Check that the rp_realm matches the filter for the GSS name that
110 if ((!((TR_INSTANCE *)tr)->rp_gss) ||
111 (!((TR_INSTANCE *)tr)->rp_gss->filter)) {
112 fprintf(stderr, "tr_tids_req_handler: No GSS name for incoming request.\n");
113 tids_send_err_response(tids, orig_req, "No GSS name for request");
117 if ((TR_FILTER_NO_MATCH == tr_filter_process_rp_permitted(orig_req->rp_realm, ((TR_INSTANCE *)tr)->rp_gss->filter, NULL, &ocons, &oaction)) ||
118 (TR_FILTER_ACTION_REJECT == oaction)) {
119 fprintf(stderr, "tr_tids_req_handler: RP realm (%s) does not match RP Realm filter for GSS name\n");
120 tids_send_err_response(tids, orig_req, "RP Realm filter error");
123 /* TBD -- add constraints to request for further forwarding. */
125 /* Check that the rp_realm and target_realm are members of the community in the request */
126 if (NULL == (tr_find_comm_rp(cfg_comm, orig_req->rp_realm))) {
127 fprintf(stderr, "tr_tids_req_hander: RP Realm (%s) not member of community (%s).\n", orig_req->rp_realm->buf, orig_req->comm->buf);
128 tids_send_err_response(tids, orig_req, "RP COI membership error");
131 if (NULL == (tr_find_comm_idp(cfg_comm, orig_req->realm))) {
132 fprintf(stderr, "tr_tids_req_hander: IDP Realm (%s) not member of APC (%s).\n", orig_req->realm->buf, orig_req->comm->buf);
133 tids_send_err_response(tids, orig_req, "IDP COI membership error");
137 /* Map the comm in the request from a COI to an APC, if needed */
138 if (TR_COMM_COI == cfg_comm->type) {
139 fprintf(stderr, "tr_tids_req_handler: Community was a COI, switching.\n");
140 /* TBD -- In theory there can be more than one? How would that work? */
141 if ((!cfg_comm->apcs) || (!cfg_comm->apcs->id)) {
142 fprintf(stderr, "No valid APC for COI %s.\n", orig_req->comm->buf);
143 tids_send_err_response(tids, orig_req, "No valid APC for community");
146 apc = tr_dup_name(cfg_comm->apcs->id);
148 /* Check that the APC is configured */
149 if (NULL == (cfg_apc = tr_comm_lookup((TR_INSTANCE *)tids->cookie, apc))) {
150 fprintf(stderr, "tr_tids_req_hander: Request for unknown comm: %s.\n", apc->buf);
151 tids_send_err_response(tids, orig_req, "Unknown APC");
156 fwd_req->orig_coi = orig_req->comm;
158 /* Check that rp_realm and target_realm are members of this APC */
159 if (NULL == (tr_find_comm_rp(cfg_apc, orig_req->rp_realm))) {
160 fprintf(stderr, "tr_tids_req_hander: RP Realm (%s) not member of community (%s).\n", orig_req->rp_realm->buf, orig_req->comm->buf);
161 tids_send_err_response(tids, orig_req, "RP APC membership error");
164 if (NULL == (tr_find_comm_idp(cfg_apc, orig_req->realm))) {
165 fprintf(stderr, "tr_tids_req_hander: IDP Realm (%s) not member of APC (%s).\n", orig_req->realm->buf, orig_req->comm->buf);
166 tids_send_err_response(tids, orig_req, "IDP APC membership error");
171 /* Find the AAA server(s) for this request */
172 if (NULL == (aaa_servers = tr_idp_aaa_server_lookup((TR_INSTANCE *)tids->cookie,
175 fprintf(stderr, "tr_tids_req_handler: No AAA Servers for realm %s.\n", orig_req->realm->buf);
176 tids_send_err_response(tids, orig_req, "No path to AAA Server(s) for realm");
179 /* send a TID request to the AAA server(s), and get the answer(s) */
180 /* TBD -- Handle multiple servers */
182 /* Create a TID client instance */
183 if (NULL == (tidc = tidc_create())) {
184 fprintf(stderr, "tr_tids_req_hander: Unable to allocate TIDC instance.\n");
185 tids_send_err_response(tids, orig_req, "Memory allocation failure");
189 /* Use the DH parameters from the original request */
190 /* TBD -- this needs to be fixed when we handle more than one req per conn */
191 tidc->client_dh = orig_req->tidc_dh;
193 /* Save information about this request for the response */
195 resp_cookie.orig_req = orig_req;
197 /* Set-up TID connection */
198 /* TBD -- handle IPv6 Addresses */
199 if (-1 == (fwd_req->conn = tidc_open_connection(tidc,
200 inet_ntoa(aaa_servers->aaa_server_addr),
201 &(fwd_req->gssctx)))) {
202 fprintf(stderr, "tr_tids_req_handler: Error in tidc_open_connection.\n");
203 tids_send_err_response(tids, orig_req, "Can't open connection to next hop TIDS");
207 /* Send a TID request */
208 if (0 > (rc = tidc_fwd_request(tidc, fwd_req, &tr_tidc_resp_handler, (void *)&resp_cookie))) {
209 fprintf(stderr, "Error from tidc_fwd_request, rc = %d.\n", rc);
210 tids_send_err_response(tids, orig_req, "Can't forward request to next hop TIDS");
217 static int tr_tids_gss_handler(gss_name_t client_name, TR_NAME *gss_name,
222 if ((!client_name) || (!gss_name) || (!tr)) {
223 fprintf(stderr, "tr_tidc_gss_handler: Bad parameters.\n");
227 /* look up the RP client matching the GSS name */
228 if ((NULL == (rp = tr_rp_client_lookup(tr, gss_name)))) {
229 fprintf(stderr, "tr_tids_gss_handler: Unknown GSS name %s\n", gss_name->buf);
233 /* Store the rp client in the TR_INSTANCE structure for now...
234 * TBD -- fix me for new tasking model. */
235 ((TR_INSTANCE *)tr)->rp_gss = rp;
240 int main (int argc, const char *argv[])
242 TR_INSTANCE *tr = NULL;
243 struct dirent **cfg_files = NULL;
245 TR_CFG_RC rc = TR_CFG_SUCCESS; /* presume success */
248 /* parse command-line arguments? -- TBD */
250 /* create a Trust Router instance */
251 if (NULL == (tr = tr_create())) {
252 fprintf(stderr, "Unable to create Trust Router instance, exiting.\n");
256 /* find the configuration files */
257 if (0 == (n = tr_find_config_files(&cfg_files))) {
258 fprintf (stderr, "Can't locate configuration files, exiting.\n");
262 /* read and parse initial configuration */
263 if (NULL == (jcfg = tr_read_config (n, cfg_files))) {
264 fprintf (stderr, "Error reading or parsing configuration files, exiting.\n");
267 if (TR_CFG_SUCCESS != tr_parse_config(tr, jcfg)) {
268 fprintf (stderr, "Error decoding configuration information, exiting.\n");
272 /* apply initial configuration */
273 if (TR_CFG_SUCCESS != (rc = tr_apply_new_config(tr))) {
274 fprintf (stderr, "Error applying configuration, rc = %d.\n", rc);
278 /* initialize the trust path query server instance */
279 if (0 == (tr->tids = tids_create ())) {
280 fprintf (stderr, "Error initializing Trust Path Query Server instance.\n");
284 /* start the trust path query server, won't return unless fatal error. */
285 if (0 != (err = tids_start(tr->tids, &tr_tids_req_handler, &tr_tids_gss_handler, (void *)tr))) {
286 fprintf (stderr, "Error from Trust Path Query Server, err = %d.\n", err);
290 tids_destroy(tr->tids);