2 * Copyright (c) 2012, JANET(UK)
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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;
83 if ((!tids) || (!orig_req) || (!resp) || (!(*resp))) {
84 fprintf(stderr, "tids_req_handler: Bad parameters\n");
88 fprintf(stdout, "tr_tids_req_handler: Request received (conn = %d)! Realm = %s, Comm = %s\n", orig_req->conn,
89 orig_req->realm->buf, orig_req->comm->buf);
93 /* Duplicate the request, so we can modify and forward it */
94 if (NULL == (fwd_req = tid_dup_req(orig_req))) {
95 fprintf(stderr, "tr_tids_req_handler: Unable to duplicate request.\n");
99 if (NULL == (cfg_comm = tr_comm_lookup((TR_INSTANCE *)tids->cookie, orig_req->comm))) {
100 fprintf(stderr, "tr_tids_req_hander: Request for unknown comm: %s.\n", orig_req->comm->buf);
101 tids_send_err_response(tids, orig_req, "Unknown community");
105 /* Check that the rp_realm and target_realm are members of the community in the request */
106 if (NULL == (tr_find_comm_rp(cfg_comm, orig_req->rp_realm))) {
107 fprintf(stderr, "tr_tids_req_hander: RP Realm (%s) not member of community (%s).\n", orig_req->rp_realm->buf, orig_req->comm->buf);
108 tids_send_err_response(tids, orig_req, "RP COI membership error");
111 if (NULL == (tr_find_comm_idp(cfg_comm, orig_req->realm))) {
112 fprintf(stderr, "tr_tids_req_hander: IDP Realm (%s) not member of APC (%s).\n", orig_req->realm->buf, orig_req->comm->buf);
113 tids_send_err_response(tids, orig_req, "IDP COI membership error");
117 /* Map the comm in the request from a COI to an APC, if needed */
118 if (TR_COMM_COI == cfg_comm->type) {
119 fprintf(stderr, "tr_tids_req_handler: Community was a COI, switching.\n");
120 /* TBD -- In theory there can be more than one? How would that work? */
121 if ((!cfg_comm->apcs) || (!cfg_comm->apcs->id)) {
122 fprintf(stderr, "No valid APC for COI %s.\n", orig_req->comm->buf);
123 tids_send_err_response(tids, orig_req, "No valid APC for community");
126 apc = tr_dup_name(cfg_comm->apcs->id);
128 /* Check that the APC is configured */
129 if (NULL == (cfg_apc = tr_comm_lookup((TR_INSTANCE *)tids->cookie, apc))) {
130 fprintf(stderr, "tr_tids_req_hander: Request for unknown comm: %s.\n", apc->buf);
131 tids_send_err_response(tids, orig_req, "Unknown APC");
136 fwd_req->orig_coi = orig_req->comm;
138 /* Check that rp_realm and target_realm are members of this APC */
139 if (NULL == (tr_find_comm_rp(cfg_apc, orig_req->rp_realm))) {
140 fprintf(stderr, "tr_tids_req_hander: RP Realm (%s) not member of community (%s).\n", orig_req->rp_realm->buf, orig_req->comm->buf);
141 tids_send_err_response(tids, orig_req, "RP APC membership error");
144 if (NULL == (tr_find_comm_idp(cfg_apc, orig_req->realm))) {
145 fprintf(stderr, "tr_tids_req_hander: IDP Realm (%s) not member of APC (%s).\n", orig_req->realm->buf, orig_req->comm->buf);
146 tids_send_err_response(tids, orig_req, "IDP APC membership error");
151 /* Find the AAA server(s) for this request */
152 if (NULL == (aaa_servers = tr_idp_aaa_server_lookup((TR_INSTANCE *)tids->cookie,
155 fprintf(stderr, "tr_tids_req_handler: No AAA Servers for realm %s.\n", orig_req->realm->buf);
156 tids_send_err_response(tids, orig_req, "No path to AAA Server(s) for realm");
159 /* send a TID request to the AAA server(s), and get the answer(s) */
160 /* TBD -- Handle multiple servers */
162 /* Create a TID client instance */
163 if (NULL == (tidc = tidc_create())) {
164 fprintf(stderr, "tr_tids_req_hander: Unable to allocate TIDC instance.\n");
165 tids_send_err_response(tids, orig_req, "Memory allocation failure");
169 /* Use the DH parameters from the original request */
170 /* TBD -- this needs to be fixed when we handle more than one req per conn */
171 tidc->client_dh = orig_req->tidc_dh;
173 /* Save information about this request for the response */
175 resp_cookie.orig_req = orig_req;
177 /* Set-up TID connection */
178 /* TBD -- handle IPv6 Addresses */
179 if (-1 == (fwd_req->conn = tidc_open_connection(tidc,
180 inet_ntoa(aaa_servers->aaa_server_addr),
181 &(fwd_req->gssctx)))) {
182 fprintf(stderr, "tr_tids_req_handler: Error in tidc_open_connection.\n");
183 tids_send_err_response(tids, orig_req, "Can't open connection to next hop TIDS");
187 /* Send a TID request */
188 if (0 > (rc = tidc_fwd_request(tidc, fwd_req, &tr_tidc_resp_handler, (void *)&resp_cookie))) {
189 fprintf(stderr, "Error from tidc_fwd_request, rc = %d.\n", rc);
190 tids_send_err_response(tids, orig_req, "Can't forward request to next hop TIDS");
197 static int tr_tids_gss_handler(gss_name_t client_name, TR_NAME *gss_name,
203 if ((!client_name) || (!gss_name) || (!tr)) {
204 fprintf(stderr, "tr_tidc_gss_handler: Bad parameters.\n");
208 /* look up the RP client matching the GSS name */
209 if ((NULL == (rp = tr_rp_client_lookup(tr, gss_name)))) {
210 fprintf(stderr, "tr_tids_gss_handler: Unknown GSS name %s", gss_name->buf);
214 /* check if the gss name matches the filter in the rp realm */
215 if (!(i = tr_prefix_wildcard_match(gss_name->buf, rp->rp_match->buf))) {
216 fprintf(stderr, "tr_tids_gss_handler: RP realm does not match, realm %s, math %s\n", gss_name->buf, rp->rp_match->buf);
220 /* Otherwise, all is well... */
225 int main (int argc, const char *argv[])
227 TR_INSTANCE *tr = NULL;
228 struct dirent **cfg_files = NULL;
230 TR_CFG_RC rc = TR_CFG_SUCCESS; /* presume success */
233 /* parse command-line arguments? -- TBD */
235 /* create a Trust Router instance */
236 if (NULL == (tr = tr_create())) {
237 fprintf(stderr, "Unable to create Trust Router instance, exiting.\n");
241 /* find the configuration files */
242 if (0 == (n = tr_find_config_files(&cfg_files))) {
243 fprintf (stderr, "Can't locate configuration files, exiting.\n");
247 /* read and parse initial configuration */
248 if (NULL == (jcfg = tr_read_config (n, cfg_files))) {
249 fprintf (stderr, "Error reading or parsing configuration files, exiting.\n");
252 if (TR_CFG_SUCCESS != tr_parse_config(tr, jcfg)) {
253 fprintf (stderr, "Error decoding configuration information, exiting.\n");
257 /* apply initial configuration */
258 if (TR_CFG_SUCCESS != (rc = tr_apply_new_config(tr))) {
259 fprintf (stderr, "Error applying configuration, rc = %d.\n", rc);
263 /* initialize the trust path query server instance */
264 if (0 == (tr->tids = tids_create ())) {
265 fprintf (stderr, "Error initializing Trust Path Query Server instance.\n");
269 /* start the trust path query server, won't return unless fatal error. */
270 if (0 != (err = tids_start(tr->tids, &tr_tids_req_handler, &tr_tids_gss_handler, (void *)tr))) {
271 fprintf (stderr, "Error from Trust Path Query Server, err = %d.\n", err);
275 tids_destroy(tr->tids);