2 * Copyright (c) 2012, JANET(UK)
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39 #include <trust_router/tid.h>
40 #include <tr_config.h>
44 /* Structure to hold TR instance and original request in one cookie */
45 typedef struct tr_resp_cookie {
50 static void tr_tidc_resp_handler (TIDC_INSTANCE *tidc,
55 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);
58 /* TBD -- handle concatentation of multiple responses to single req */
59 tids_send_response(((TR_RESP_COOKIE *)resp_cookie)->tr->tids,
60 ((TR_RESP_COOKIE *)resp_cookie)->orig_req,
66 static int tr_tids_req_handler (TIDS_INSTANCE * tids,
71 TIDC_INSTANCE *tidc = NULL;
72 TR_RESP_COOKIE resp_cookie;
73 TR_AAA_SERVER *aaa_servers = NULL;
75 TID_REQ *fwd_req = NULL;
76 TR_COMM *cfg_comm = NULL;
79 if ((!tids) || (!orig_req) || (!resp) || (!(*resp))) {
80 fprintf(stderr, "tids_req_handler: Bad parameters\n");
84 fprintf(stdout, "tr_tids_req_handler: Request received (conn = %d)! Realm = %s, Comm = %s\n", orig_req->conn,
85 orig_req->realm->buf, orig_req->comm->buf);
89 /* Duplicate the request, so we can modify and forward it */
90 if (NULL == (fwd_req = tid_dup_req(orig_req))) {
91 fprintf(stderr, "tr_tids_req_handler: Unable to duplicate request.\n");
95 /* Map the comm in the request from a COI to an APC, if needed */
96 if (NULL == (cfg_comm = tr_comm_lookup((TR_INSTANCE *)tids->cookie, orig_req->comm))) {
97 fprintf(stderr, "tr_tids_req_hander: Request for unknown comm: %s.\n", orig_req->comm->buf);
98 tids_send_err_response(tids, orig_req, "Unknown community");
102 /* TBD -- check that the rp_realm is a member of the original community */
104 /* If the community is a COI, switch to the apc */
105 if (TR_COMM_COI == cfg_comm->type) {
106 fprintf(stderr, "tr_tids_req_handler: Community was a COI, switching.\n");
107 /* TBD -- In theory there can be more than one? How would that work? */
108 if ((!cfg_comm->apcs) || (!cfg_comm->apcs->id)) {
109 fprintf(stderr, "No valid APC for COI %s.\n", orig_req->comm->buf);
110 tids_send_err_response(tids, orig_req, "No valid APC for community");
113 apc = tr_dup_name(cfg_comm->apcs->id);
115 fwd_req->orig_coi = orig_req->comm;
118 /* Find the AAA server(s) for this request */
119 if (NULL == (aaa_servers = tr_idp_aaa_server_lookup((TR_INSTANCE *)tids->cookie,
122 fprintf(stderr, "tr_tids_req_handler: No AAA Servers for realm %s.\n", orig_req->realm->buf);
123 tids_send_err_response(tids, orig_req, "No path to AAA Servers for realm");
126 /* send a TID request to the AAA server(s), and get the answer(s) */
127 /* TBD -- Handle multiple servers */
129 /* Create a TID client instance */
130 if (NULL == (tidc = tidc_create())) {
131 fprintf(stderr, "tr_tids_req_hander: Unable to allocate TIDC instance.\n");
132 tids_send_err_response(tids, orig_req, "Memory allocation failure");
136 /* Use the DH parameters from the original request */
137 /* TBD -- this needs to be fixed when we handle more than one req per conn */
138 tidc->client_dh = orig_req->tidc_dh;
140 /* Save information about this request for the response */
142 resp_cookie.orig_req = orig_req;
144 /* Set-up TID connection */
145 /* TBD -- handle IPv6 Addresses */
146 if (-1 == (fwd_req->conn = tidc_open_connection(tidc,
147 inet_ntoa(aaa_servers->aaa_server_addr),
148 &(fwd_req->gssctx)))) {
149 fprintf(stderr, "tr_tids_req_handler: Error in tidc_open_connection.\n");
150 tids_send_err_response(tids, orig_req, "Can't open connection to next hop TIDS");
154 /* Send a TID request */
155 if (0 > (rc = tidc_fwd_request(tidc, fwd_req, &tr_tidc_resp_handler, (void *)&resp_cookie))) {
156 fprintf(stderr, "Error from tidc_fwd_request, rc = %d.\n", rc);
157 tids_send_err_response(tids, orig_req, "Can't forward request to next hop TIDS");
164 int main (int argc, const char *argv[])
166 TR_INSTANCE *tr = NULL;
167 struct dirent **cfg_files = NULL;
169 TR_CFG_RC rc = TR_CFG_SUCCESS; /* presume success */
172 /* parse command-line arguments? -- TBD */
174 /* create a Trust Router instance */
175 if (NULL == (tr = tr_create())) {
176 fprintf(stderr, "Unable to create Trust Router instance, exiting.\n");
180 /* find the configuration files */
181 if (0 == (n = tr_find_config_files(&cfg_files))) {
182 fprintf (stderr, "Can't locate configuration files, exiting.\n");
186 /* read and parse initial configuration */
187 if (NULL == (jcfg = tr_read_config (n, cfg_files))) {
188 fprintf (stderr, "Error reading or parsing configuration files, exiting.\n");
191 if (TR_CFG_SUCCESS != tr_parse_config(tr, jcfg)) {
192 fprintf (stderr, "Error decoding configuration information, exiting.\n");
196 /* apply initial configuration */
197 if (TR_CFG_SUCCESS != (rc = tr_apply_new_config(tr))) {
198 fprintf (stderr, "Error applying configuration, rc = %d.\n", rc);
202 /* initialize the trust path query server instance */
203 if (0 == (tr->tids = tids_create ())) {
204 fprintf (stderr, "Error initializing Trust Path Query Server instance.\n");
208 /* start the trust path query server, won't return unless fatal error. */
209 if (0 != (err = tids_start(tr->tids, &tr_tids_req_handler, (void *)tr))) {
210 fprintf (stderr, "Error from Trust Path Query Server, err = %d.\n", err);
214 tids_destroy(tr->tids);