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 if (NULL == (cfg_comm = tr_comm_lookup((TR_INSTANCE *)tids->cookie, orig_req->comm))) {
96 fprintf(stderr, "tr_tids_req_hander: Request for unknown comm: %s.\n", orig_req->comm->buf);
97 tids_send_err_response(tids, orig_req, "Unknown community");
101 /* Check that the rp_realm and target_realm are members of the community in the request */
102 if (NULL == (tr_find_comm_rp(cfg_comm, orig_req->rp_realm))) {
103 fprintf(stderr, "tr_tids_req_hander: RP Realm (%s) not member of community (%s).\n", orig_req->rp_realm->buf, orig_req->comm->buf);
104 tids_send_err_response(tids, orig_req, "RP COI membership error");
107 if (NULL == (tr_find_comm_idp(cfg_comm, orig_req->realm))) {
108 fprintf(stderr, "tr_tids_req_hander: IDP Realm (%s) not member of APC (%s).\n", orig_req->realm->buf, orig_req->comm->buf);
109 tids_send_err_response(tids, orig_req, "IDP COI membership error");
113 /* Map the comm in the request from a COI to an APC, if needed */
114 if (TR_COMM_COI == cfg_comm->type) {
115 fprintf(stderr, "tr_tids_req_handler: Community was a COI, switching.\n");
116 /* TBD -- In theory there can be more than one? How would that work? */
117 if ((!cfg_comm->apcs) || (!cfg_comm->apcs->id)) {
118 fprintf(stderr, "No valid APC for COI %s.\n", orig_req->comm->buf);
119 tids_send_err_response(tids, orig_req, "No valid APC for community");
122 apc = tr_dup_name(cfg_comm->apcs->id);
124 /* Check that the APC is configured */
125 if (NULL == (cfg_apc = tr_comm_lookup((TR_INSTANCE *)tids->cookie, apc))) {
126 fprintf(stderr, "tr_tids_req_hander: Request for unknown comm: %s.\n", apc->buf);
127 tids_send_err_response(tids, orig_req, "Unknown APC");
132 fwd_req->orig_coi = orig_req->comm;
134 /* Check that rp_realm and target_realm are members of this APC */
135 if (NULL == (tr_find_comm_rp(cfg_apc, orig_req->rp_realm))) {
136 fprintf(stderr, "tr_tids_req_hander: RP Realm (%s) not member of community (%s).\n", orig_req->rp_realm->buf, orig_req->comm->buf);
137 tids_send_err_response(tids, orig_req, "RP APC membership error");
140 if (NULL == (tr_find_comm_idp(cfg_apc, orig_req->realm))) {
141 fprintf(stderr, "tr_tids_req_hander: IDP Realm (%s) not member of APC (%s).\n", orig_req->realm->buf, orig_req->comm->buf);
142 tids_send_err_response(tids, orig_req, "IDP APC membership error");
147 /* Find the AAA server(s) for this request */
148 if (NULL == (aaa_servers = tr_idp_aaa_server_lookup((TR_INSTANCE *)tids->cookie,
151 fprintf(stderr, "tr_tids_req_handler: No AAA Servers for realm %s.\n", orig_req->realm->buf);
152 tids_send_err_response(tids, orig_req, "No path to AAA Server(s) for realm");
155 /* send a TID request to the AAA server(s), and get the answer(s) */
156 /* TBD -- Handle multiple servers */
158 /* Create a TID client instance */
159 if (NULL == (tidc = tidc_create())) {
160 fprintf(stderr, "tr_tids_req_hander: Unable to allocate TIDC instance.\n");
161 tids_send_err_response(tids, orig_req, "Memory allocation failure");
165 /* Use the DH parameters from the original request */
166 /* TBD -- this needs to be fixed when we handle more than one req per conn */
167 tidc->client_dh = orig_req->tidc_dh;
169 /* Save information about this request for the response */
171 resp_cookie.orig_req = orig_req;
173 /* Set-up TID connection */
174 /* TBD -- handle IPv6 Addresses */
175 if (-1 == (fwd_req->conn = tidc_open_connection(tidc,
176 inet_ntoa(aaa_servers->aaa_server_addr),
177 &(fwd_req->gssctx)))) {
178 fprintf(stderr, "tr_tids_req_handler: Error in tidc_open_connection.\n");
179 tids_send_err_response(tids, orig_req, "Can't open connection to next hop TIDS");
183 /* Send a TID request */
184 if (0 > (rc = tidc_fwd_request(tidc, fwd_req, &tr_tidc_resp_handler, (void *)&resp_cookie))) {
185 fprintf(stderr, "Error from tidc_fwd_request, rc = %d.\n", rc);
186 tids_send_err_response(tids, orig_req, "Can't forward request to next hop TIDS");
193 int main (int argc, const char *argv[])
195 TR_INSTANCE *tr = NULL;
196 struct dirent **cfg_files = NULL;
198 TR_CFG_RC rc = TR_CFG_SUCCESS; /* presume success */
201 /* parse command-line arguments? -- TBD */
203 /* create a Trust Router instance */
204 if (NULL == (tr = tr_create())) {
205 fprintf(stderr, "Unable to create Trust Router instance, exiting.\n");
209 /* find the configuration files */
210 if (0 == (n = tr_find_config_files(&cfg_files))) {
211 fprintf (stderr, "Can't locate configuration files, exiting.\n");
215 /* read and parse initial configuration */
216 if (NULL == (jcfg = tr_read_config (n, cfg_files))) {
217 fprintf (stderr, "Error reading or parsing configuration files, exiting.\n");
220 if (TR_CFG_SUCCESS != tr_parse_config(tr, jcfg)) {
221 fprintf (stderr, "Error decoding configuration information, exiting.\n");
225 /* apply initial configuration */
226 if (TR_CFG_SUCCESS != (rc = tr_apply_new_config(tr))) {
227 fprintf (stderr, "Error applying configuration, rc = %d.\n", rc);
231 /* initialize the trust path query server instance */
232 if (0 == (tr->tids = tids_create ())) {
233 fprintf (stderr, "Error initializing Trust Path Query Server instance.\n");
237 /* start the trust path query server, won't return unless fatal error. */
238 if (0 != (err = tids_start(tr->tids, &tr_tids_req_handler, (void *)tr))) {
239 fprintf (stderr, "Error from Trust Path Query Server, err = %d.\n", err);
243 tids_destroy(tr->tids);