X-Git-Url: http://www.project-moonshot.org/gitweb/?a=blobdiff_plain;f=tr%2Ftr_main.c;h=dc18ca035cdce0a01fd214e3f493ba8d0794fff2;hb=3f2f7c0b61b33e22ca937809e5a80e68c7490609;hp=bc57024a7ce1471de1eff1030a869e6526ac07fc;hpb=f1e0cb3f969c55118d3254e9c5943751728e32ef;p=trust_router.git diff --git a/tr/tr_main.c b/tr/tr_main.c index bc57024..dc18ca0 100644 --- a/tr/tr_main.c +++ b/tr/tr_main.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2012, JANET(UK) + * Copyright (c) 2012, 2015, JANET(UK) * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -33,41 +33,271 @@ */ #include +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +/* Structure to hold TR instance and original request in one cookie */ +typedef struct tr_resp_cookie { + TR_INSTANCE *tr; + TID_REQ *orig_req; +} TR_RESP_COOKIE; + + +static void tr_tidc_resp_handler (TIDC_INSTANCE *tidc, + TID_REQ *req, + TID_RESP *resp, + void *resp_cookie) +{ + 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); + req->resp_rcvd = 1; + + /* TBD -- handle concatentation of multiple responses to single req */ + tids_send_response(((TR_RESP_COOKIE *)resp_cookie)->tr->tids, + ((TR_RESP_COOKIE *)resp_cookie)->orig_req, + resp); + + return; +} + +static int tr_tids_req_handler (TIDS_INSTANCE *tids, + TID_REQ *orig_req, + TID_RESP *resp, + void *tr_in) +{ + TIDC_INSTANCE *tidc = NULL; + TR_RESP_COOKIE resp_cookie; + TR_AAA_SERVER *aaa_servers = NULL; + TR_NAME *apc = NULL; + TID_REQ *fwd_req = NULL; + TR_COMM *cfg_comm = NULL; + TR_COMM *cfg_apc = NULL; + TR_INSTANCE *tr = (TR_INSTANCE *) tr_in; + int oaction = TR_FILTER_ACTION_REJECT; + int rc = 0; + + if ((!tids) || (!orig_req) || (!resp) || (!tr)) { + tr_debug("tr_tids_req_handler: Bad parameters"); + return -1; + } + + tr_debug("tr_tids_req_handler: Request received (conn = %d)! Realm = %s, Comm = %s", orig_req->conn, + orig_req->realm->buf, orig_req->comm->buf); + if (tids) + tids->req_count++; + + /* Duplicate the request, so we can modify and forward it */ + if (NULL == (fwd_req = tid_dup_req(orig_req))) { + tr_debug("tr_tids_req_handler: Unable to duplicate request."); + return -1; + } + + if (NULL == (cfg_comm = tr_comm_lookup(tids->cookie, orig_req->comm))) { + tr_notice("tr_tids_req_hander: Request for unknown comm: %s.", orig_req->comm->buf); + tids_send_err_response(tids, orig_req, "Unknown community"); + return -1; + } + + /* Check that the rp_realm matches the filter for the GSS name that + * was received. */ + + if ((!(tr)->rp_gss) || + (!(tr)->rp_gss->filter)) { + tr_notice("tr_tids_req_handler: No GSS name for incoming request."); + tids_send_err_response(tids, orig_req, "No GSS name for request"); + return -1; + } + + 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)) || + (TR_FILTER_ACTION_REJECT == oaction)) { + tr_notice("tr_tids_req_handler: RP realm (%s) does not match RP Realm filter for GSS name", orig_req->rp_realm->buf); + tids_send_err_response(tids, orig_req, "RP Realm filter error"); + return -1; + } + /* Check that the rp_realm is a member of the community in the request */ + if (NULL == (tr_find_comm_rp(cfg_comm, orig_req->rp_realm))) { + tr_notice("tr_tids_req_handler: RP Realm (%s) not member of community (%s).", orig_req->rp_realm->buf, orig_req->comm->buf); + tids_send_err_response(tids, orig_req, "RP COI membership error"); + return -1; + } + + /* Map the comm in the request from a COI to an APC, if needed */ + if (TR_COMM_COI == cfg_comm->type) { + tr_debug("tr_tids_req_handler: Community was a COI, switching."); + /* TBD -- In theory there can be more than one? How would that work? */ + if ((!cfg_comm->apcs) || (!cfg_comm->apcs->id)) { + tr_notice("No valid APC for COI %s.", orig_req->comm->buf); + tids_send_err_response(tids, orig_req, "No valid APC for community"); + return -1; + } + apc = tr_dup_name(cfg_comm->apcs->id); + + /* Check that the APC is configured */ + if (NULL == (cfg_apc = tr_comm_lookup(tids->cookie, apc))) { + tr_notice("tr_tids_req_hander: Request for unknown comm: %s.", apc->buf); + tids_send_err_response(tids, orig_req, "Unknown APC"); + return -1; + } + + fwd_req->comm = apc; + fwd_req->orig_coi = orig_req->comm; + + /* Check that rp_realm is a member of this APC */ + if (NULL == (tr_find_comm_rp(cfg_apc, orig_req->rp_realm))) { + tr_notice("tr_tids_req_hander: RP Realm (%s) not member of community (%s).", orig_req->rp_realm->buf, orig_req->comm->buf); + tids_send_err_response(tids, orig_req, "RP APC membership error"); + return -1; + } + } + + /* Find the AAA server(s) for this request */ + if (NULL == (aaa_servers = tr_idp_aaa_server_lookup((TR_INSTANCE *)tids->cookie, + orig_req->realm, + orig_req->comm))) { + tr_debug("tr_tids_req_handler: No AAA Servers for realm %s, defaulting.", orig_req->realm->buf); + if (NULL == (aaa_servers = tr_default_server_lookup ((TR_INSTANCE *)tids->cookie, + orig_req->comm))) { + tr_notice("tr_tids_req_handler: No default AAA servers, discarded."); + tids_send_err_response(tids, orig_req, "No path to AAA Server(s) for realm"); + return -1; + } + } else { + /* if we aren't defaulting, check idp coi and apc membership */ + if (NULL == (tr_find_comm_idp(cfg_comm, fwd_req->realm))) { + tr_notice("tr_tids_req_handler: IDP Realm (%s) not member of community (%s).", orig_req->realm->buf, orig_req->comm->buf); + tids_send_err_response(tids, orig_req, "IDP community membership error"); + return -1; + } + if ( cfg_apc && (NULL == (tr_find_comm_idp(cfg_apc, fwd_req->realm)))) { + tr_notice("tr_tids_req_handler: IDP Realm (%s) not member of APC (%s).", orig_req->realm->buf, orig_req->comm->buf); + tids_send_err_response(tids, orig_req, "IDP APC membership error"); + return -1; + } + } + + /* send a TID request to the AAA server(s), and get the answer(s) */ + /* TBD -- Handle multiple servers */ + + if (cfg_apc) + fwd_req->expiration_interval = cfg_apc->expiration_interval; + else fwd_req->expiration_interval = cfg_comm->expiration_interval; + /* Create a TID client instance */ + if (NULL == (tidc = tidc_create())) { + tr_crit("tr_tids_req_hander: Unable to allocate TIDC instance."); + tids_send_err_response(tids, orig_req, "Memory allocation failure"); + return -1; + } + /* Use the DH parameters from the original request */ + /* TBD -- this needs to be fixed when we handle more than one req per conn */ + tidc->client_dh = orig_req->tidc_dh; + + /* Save information about this request for the response */ + resp_cookie.tr = tr; + resp_cookie.orig_req = orig_req; + + /* Set-up TID connection */ + if (-1 == (fwd_req->conn = tidc_open_connection(tidc, + aaa_servers->hostname->buf, + TID_PORT, + &(fwd_req->gssctx)))) { + tr_notice("tr_tids_req_handler: Error in tidc_open_connection."); + tids_send_err_response(tids, orig_req, "Can't open connection to next hop TIDS"); + return -1; + }; + + /* Send a TID request */ + if (0 > (rc = tidc_fwd_request(tidc, fwd_req, &tr_tidc_resp_handler, (void *)&resp_cookie))) { + tr_notice("Error from tidc_fwd_request, rc = %d.", rc); + tids_send_err_response(tids, orig_req, "Can't forward request to next hop TIDS"); + tid_req_free(orig_req); + return -1; + } + + tid_req_free(orig_req); + return 0; +} + +static int tr_tids_gss_handler(gss_name_t client_name, TR_NAME *gss_name, + void *tr_in) +{ + TR_RP_CLIENT *rp; + TR_INSTANCE *tr = (TR_INSTANCE *) tr_in; + + if ((!client_name) || (!gss_name) || (!tr)) { + tr_debug("tr_tidc_gss_handler: Bad parameters."); + return -1; + } + + /* look up the RP client matching the GSS name */ + if ((NULL == (rp = tr_rp_client_lookup(tr, gss_name)))) { + tr_debug("tr_tids_gss_handler: Unknown GSS name %s", gss_name->buf); + return -1; + } + + /* Store the rp client in the TR_INSTANCE structure for now... + * TBD -- fix me for new tasking model. */ + (tr)->rp_gss = rp; + tr_debug("Client's GSS Name: %s", gss_name->buf); + + return 0; +} -#include int main (int argc, const char *argv[]) { - TPQS_INSTANCE *tpqs = 0; - int err; - FILE *cfg_file = 0; + TR_INSTANCE *tr = NULL; + struct dirent **cfg_files = NULL; + TR_CFG_RC rc = TR_CFG_SUCCESS; /* presume success */ + int err = 0, n = 0;; - /* parse command-line arguments -- TBD */ + /* parse command-line arguments? -- TBD */ - /* open the configuration file*/ - cfg_file = fopen ("tr.cfg", "r"); + /* Use standalone logging */ + tr_log_open(); - /* read initial configuration */ - if (0 != (err = tr_read_config (cfg_file))) { - printf ("Error reading configuration, err = %d.\n", err); + /* create a Trust Router instance */ + if (NULL == (tr = tr_create())) { + tr_crit("Unable to create Trust Router instance, exiting."); return 1; } - /* initialize the trust path query server instance */ - if (0 == (tpqs = tpqs_create ())) { - printf ("Error initializing Trust Path Query Server instance.\n", err); - return 1; + /* find the configuration files */ + if (0 == (n = tr_find_config_files(&cfg_files))) { + tr_crit("Can't locate configuration files, exiting."); + exit(1); } - /* start the trust path query server, runs in its own thread */ - if (0 != (err = tpqs_start(tpqs))) { - printf ("Error starting Trust Path Query Server, err = %d.\n", err); - return err; + if (TR_CFG_SUCCESS != tr_parse_config(tr, n, cfg_files)) { + tr_crit("Error decoding configuration information, exiting."); + exit(1); } - /* start the trust router protocol engine -- TBD */ - while (1); + /* apply initial configuration */ + if (TR_CFG_SUCCESS != (rc = tr_apply_new_config(tr))) { + tr_crit("Error applying configuration, rc = %d.", rc); + exit(1); + } - tpqs_destroy(tpqs); - return 0; + /* initialize the trust path query server instance */ + if (0 == (tr->tids = tids_create ())) { + tr_crit("Error initializing Trust Path Query Server instance."); + exit(1); + } + + /* start the trust path query server, won't return unless fatal error. */ + 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))) { + tr_crit("Error from Trust Path Query Server, err = %d.", err); + exit(err); + } + + tids_destroy(tr->tids); + tr_destroy(tr); + exit(0); }