2 * Copyright (c) 2012-2014 , JANET(UK)
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6 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
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13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
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17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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34 #include <sys/socket.h>
35 #include <netinet/in.h>
36 #include <arpa/inet.h>
38 #include <openssl/dh.h>
47 #include <trust_router/tr_name.h>
48 #include <trp_internal.h>
49 #include <trust_router/tr_constraint.h>
53 /* Read attribute attr from msg as an integer. Returns nonzero on error. */
54 static int tr_msg_get_json_integer(json_t *jmsg, const char *attr, int *dest)
58 obj=json_object_get(jmsg, attr);
63 if (!json_is_integer(obj)) {
67 (*dest)=json_integer_value(obj);
71 /* Read attribute attr from msg as a string. Copies string into mem_ctx context so jmsg can
72 * be destroyed safely. Returns nonzero on error. */
73 static TRP_RC tr_msg_get_json_string(json_t *jmsg, const char *attr, char **dest, TALLOC_CTX *mem_ctx)
77 obj=json_object_get(jmsg, attr);
82 if (!json_is_string(obj))
85 *dest=talloc_strdup(mem_ctx, json_string_value(obj));
92 enum msg_type tr_msg_get_msg_type(TR_MSG *msg)
97 void tr_msg_set_msg_type(TR_MSG *msg, enum msg_type type)
102 TID_REQ *tr_msg_get_req(TR_MSG *msg)
104 if (msg->msg_type == TID_REQUEST)
105 return (TID_REQ *)msg->msg_rep;
109 void tr_msg_set_req(TR_MSG *msg, TID_REQ *req)
112 msg->msg_type = TID_REQUEST;
115 TID_RESP *tr_msg_get_resp(TR_MSG *msg)
117 if (msg->msg_type == TID_RESPONSE)
118 return (TID_RESP *)msg->msg_rep;
122 void tr_msg_set_resp(TR_MSG *msg, TID_RESP *resp)
125 msg->msg_type = TID_RESPONSE;
128 TRP_UPD *tr_msg_get_trp_upd(TR_MSG *msg)
130 if (msg->msg_type == TRP_UPDATE)
131 return (TRP_UPD *)msg->msg_rep;
135 void tr_msg_set_trp_upd(TR_MSG *msg, TRP_UPD *update)
138 talloc_steal(NULL, update); /* should attach to msg, but TR_MSG not usually talloc'ed */
139 msg->msg_type=TRP_UPDATE;
142 TRP_REQ *tr_msg_get_trp_req(TR_MSG *msg)
144 if (msg->msg_type == TRP_REQUEST)
145 return (TRP_REQ *)msg->msg_rep;
149 void tr_msg_set_trp_req(TR_MSG *msg, TRP_REQ *req)
152 msg->msg_type=TRP_REQUEST;
155 static json_t *tr_msg_encode_dh(DH *dh)
160 if ((!dh) || (!dh->p) || (!dh->g) || (!dh->pub_key))
165 jbn = json_string(BN_bn2hex(dh->p));
166 json_object_set_new(jdh, "dh_p", jbn);
168 jbn = json_string(BN_bn2hex(dh->g));
169 json_object_set_new(jdh, "dh_g", jbn);
171 jbn = json_string(BN_bn2hex(dh->pub_key));
172 json_object_set_new(jdh, "dh_pub_key", jbn);
177 static DH *tr_msg_decode_dh(json_t *jdh)
182 json_t *jpub_key = NULL;
184 if (!(dh = malloc(sizeof(DH)))) {
185 tr_crit("tr_msg_decode_dh(): Error allocating DH structure.");
189 memset(dh, 0, sizeof(DH));
191 /* store required fields from dh object */
192 if ((NULL == (jp = json_object_get(jdh, "dh_p"))) ||
193 (NULL == (jg = json_object_get(jdh, "dh_g"))) ||
194 (NULL == (jpub_key = json_object_get(jdh, "dh_pub_key")))) {
195 tr_debug("tr_msg_decode_dh(): Error parsing dh_info.");
200 BN_hex2bn(&(dh->p), json_string_value(jp));
201 BN_hex2bn(&(dh->g), json_string_value(jg));
202 BN_hex2bn(&(dh->pub_key), json_string_value(jpub_key));
207 static json_t * tr_msg_encode_tidreq(TID_REQ *req)
212 if ((!req) || (!req->rp_realm) || (!req->realm) || !(req->comm))
215 assert(jreq = json_object());
217 jstr = json_string(req->rp_realm->buf);
218 json_object_set_new(jreq, "rp_realm", jstr);
220 jstr = json_string(req->realm->buf);
221 json_object_set_new(jreq, "target_realm", jstr);
223 jstr = json_string(req->comm->buf);
224 json_object_set_new(jreq, "community", jstr);
227 jstr = json_string(req->orig_coi->buf);
228 json_object_set_new(jreq, "orig_coi", jstr);
231 json_object_set_new(jreq, "dh_info", tr_msg_encode_dh(req->tidc_dh));
234 json_object_set(jreq, "constraints", (json_t *) req->cons);
237 json_object_set(jreq, "path", req->path);
238 if (req->expiration_interval)
239 json_object_set_new(jreq, "expiration_interval",
240 json_integer(req->expiration_interval));
245 static TID_REQ *tr_msg_decode_tidreq(json_t *jreq)
247 TID_REQ *treq = NULL;
248 json_t *jrp_realm = NULL;
249 json_t *jrealm = NULL;
250 json_t *jcomm = NULL;
251 json_t *jorig_coi = NULL;
253 json_t *jpath = NULL;
254 json_t *jexpire_interval = NULL;
256 if (!(treq =tid_req_new())) {
257 tr_crit("tr_msg_decode_tidreq(): Error allocating TID_REQ structure.");
261 /* store required fields from request */
262 if ((NULL == (jrp_realm = json_object_get(jreq, "rp_realm"))) ||
263 (NULL == (jrealm = json_object_get(jreq, "target_realm"))) ||
264 (NULL == (jcomm = json_object_get(jreq, "community")))) {
265 tr_notice("tr_msg_decode(): Error parsing required fields.");
270 jpath = json_object_get(jreq, "path");
271 jexpire_interval = json_object_get(jreq, "expiration_interval");
273 treq->rp_realm = tr_new_name((char *)json_string_value(jrp_realm));
274 treq->realm = tr_new_name((char *)json_string_value(jrealm));
275 treq->comm = tr_new_name((char *)json_string_value(jcomm));
277 /* Get DH Info from the request */
278 if (NULL == (jdh = json_object_get(jreq, "dh_info"))) {
279 tr_debug("tr_msg_decode(): Error parsing dh_info.");
283 treq->tidc_dh = tr_msg_decode_dh(jdh);
285 /* store optional "orig_coi" field */
286 if (NULL != (jorig_coi = json_object_get(jreq, "orig_coi"))) {
287 treq->orig_coi = tr_new_name((char *)json_string_value(jorig_coi));
290 treq->cons = (TR_CONSTRAINT_SET *) json_object_get(jreq, "constraints");
292 if (!tr_constraint_set_validate(treq->cons)) {
293 tr_debug("Constraint set validation failed");
297 json_incref((json_t *) treq->cons);
298 tid_req_cleanup_json(treq, (json_t *) treq->cons);
303 tid_req_cleanup_json(treq, jpath);
305 if (jexpire_interval)
306 treq->expiration_interval = json_integer_value(jexpire_interval);
311 static json_t *tr_msg_encode_one_server(TID_SRVR_BLK *srvr)
313 json_t *jsrvr = NULL;
315 gchar *time_str = g_time_val_to_iso8601(&srvr->key_expiration);
317 tr_debug("Encoding one server.");
319 jsrvr = json_object();
321 /* Server IP Address -- TBD handle IPv6 */
322 jstr = json_string(inet_ntoa(srvr->aaa_server_addr));
323 json_object_set_new(jsrvr, "server_addr", jstr);
325 json_object_set_new(jsrvr,
326 "key_expiration", json_string(time_str));
328 /* Server DH Block */
329 jstr = json_string(srvr->key_name->buf);
330 json_object_set_new(jsrvr, "key_name", jstr);
331 json_object_set_new(jsrvr, "server_dh", tr_msg_encode_dh(srvr->aaa_server_dh));
333 /* The path is owned by the srvr, so grab an extra ref*/
334 json_object_set(jsrvr, "path", srvr->path);
338 static int tr_msg_decode_one_server(json_t *jsrvr, TID_SRVR_BLK *srvr)
340 json_t *jsrvr_addr = NULL;
341 json_t *jsrvr_kn = NULL;
342 json_t *jsrvr_dh = NULL;
343 json_t *jsrvr_expire = NULL;
349 if ((NULL == (jsrvr_addr = json_object_get(jsrvr, "server_addr"))) ||
350 (NULL == (jsrvr_kn = json_object_get(jsrvr, "key_name"))) ||
351 (NULL == (jsrvr_dh = json_object_get(jsrvr, "server_dh")))) {
352 tr_notice("tr_msg_decode_one_server(): Error parsing required fields.");
356 /* TBD -- handle IPv6 Addresses */
357 inet_aton(json_string_value(jsrvr_addr), &(srvr->aaa_server_addr));
358 srvr->key_name = tr_new_name((char *)json_string_value(jsrvr_kn));
359 srvr->aaa_server_dh = tr_msg_decode_dh(jsrvr_dh);
360 srvr->path = json_object_get(jsrvr, "path");
361 jsrvr_expire = json_object_get(jsrvr, "key_expiration");
362 if (jsrvr_expire && json_is_string(jsrvr_expire)) {
363 if (!g_time_val_from_iso8601(json_string_value(jsrvr_expire),
364 &srvr->key_expiration))
365 tr_notice("Key expiration %s cannot be parsed", json_string_value(jsrvr_expire));
371 static json_t *tr_msg_encode_servers(TID_RESP *resp)
373 json_t *jservers = NULL;
374 json_t *jsrvr = NULL;
375 TID_SRVR_BLK *srvr = NULL;
378 jservers = json_array();
380 tid_resp_servers_foreach(resp, srvr, index) {
381 if ((NULL == (jsrvr = tr_msg_encode_one_server(srvr))) ||
382 (-1 == json_array_append_new(jservers, jsrvr))) {
387 // tr_debug("tr_msg_encode_servers(): servers contains:");
388 // tr_debug("%s", json_dumps(jservers, 0));
392 static TID_SRVR_BLK *tr_msg_decode_servers(void * ctx, json_t *jservers, size_t *out_len)
394 TID_SRVR_BLK *servers = NULL;
396 size_t i, num_servers;
398 num_servers = json_array_size(jservers);
399 tr_debug("tr_msg_decode_servers(): Number of servers = %u.", (unsigned) num_servers);
401 if (0 == num_servers) {
402 tr_debug("tr_msg_decode_servers(): Server array is empty.");
405 servers = talloc_zero_array(ctx, TID_SRVR_BLK, num_servers);
407 for (i = 0; i < num_servers; i++) {
408 jsrvr = json_array_get(jservers, i);
409 if (0 != tr_msg_decode_one_server(jsrvr, &servers[i])) {
410 talloc_free(servers);
416 *out_len = num_servers;
420 static json_t * tr_msg_encode_tidresp(TID_RESP *resp)
422 json_t *jresp = NULL;
424 json_t *jservers = NULL;
426 if ((!resp) || (!resp->rp_realm) || (!resp->realm) || !(resp->comm))
429 jresp = json_object();
431 if (TID_ERROR == resp->result) {
432 jstr = json_string("error");
433 json_object_set_new(jresp, "result", jstr);
435 jstr = json_string(resp->err_msg->buf);
436 json_object_set_new(jresp, "err_msg", jstr);
440 jstr = json_string("success");
441 json_object_set_new(jresp, "result", jstr);
444 jstr = json_string(resp->rp_realm->buf);
445 json_object_set_new(jresp, "rp_realm", jstr);
447 jstr = json_string(resp->realm->buf);
448 json_object_set_new(jresp, "target_realm", jstr);
450 jstr = json_string(resp->comm->buf);
451 json_object_set_new(jresp, "comm", jstr);
453 if (resp->orig_coi) {
454 jstr = json_string(resp->orig_coi->buf);
455 json_object_set_new(jresp, "orig_coi", jstr);
458 if (NULL == resp->servers) {
459 tr_debug("tr_msg_encode_tidresp(): No servers to encode.");
462 jservers = tr_msg_encode_servers(resp);
463 json_object_set_new(jresp, "servers", jservers);
465 if (resp->error_path)
466 json_object_set(jresp, "error_path", resp->error_path);
472 static TID_RESP *tr_msg_decode_tidresp(json_t *jresp)
474 TID_RESP *tresp = NULL;
475 json_t *jresult = NULL;
476 json_t *jrp_realm = NULL;
477 json_t *jrealm = NULL;
478 json_t *jcomm = NULL;
479 json_t *jorig_coi = NULL;
480 json_t *jservers = NULL;
481 json_t *jerr_msg = NULL;
483 if (!(tresp=tid_resp_new(NULL))) {
484 tr_crit("tr_msg_decode_tidresp(): Error allocating TID_RESP structure.");
489 /* store required fields from response */
490 if ((NULL == (jresult = json_object_get(jresp, "result"))) ||
491 (!json_is_string(jresult)) ||
492 (NULL == (jrp_realm = json_object_get(jresp, "rp_realm"))) ||
493 (!json_is_string(jrp_realm)) ||
494 (NULL == (jrealm = json_object_get(jresp, "target_realm"))) ||
495 (!json_is_string(jrealm)) ||
496 (NULL == (jcomm = json_object_get(jresp, "comm"))) ||
497 (!json_is_string(jcomm))) {
498 tr_debug("tr_msg_decode_tidresp(): Error parsing response.");
503 if (0 == (strcmp(json_string_value(jresult), "success"))) {
504 tr_debug("tr_msg_decode_tidresp(): Success! result = %s.", json_string_value(jresult));
505 if ((NULL != (jservers = json_object_get(jresp, "servers"))) ||
506 (!json_is_array(jservers))) {
507 tresp->servers = tr_msg_decode_servers(tresp, jservers, &tresp->num_servers);
513 tresp->result = TID_SUCCESS;
516 tresp->result = TID_ERROR;
517 tr_debug("tr_msg_decode_tidresp(): Error! result = %s.", json_string_value(jresult));
518 if ((NULL != (jerr_msg = json_object_get(jresp, "err_msg"))) ||
519 (!json_is_string(jerr_msg))) {
520 tresp->err_msg = tr_new_name((char *)json_string_value(jerr_msg));
524 tresp->rp_realm = tr_new_name((char *)json_string_value(jrp_realm));
525 tresp->realm = tr_new_name((char *)json_string_value(jrealm));
526 tresp->comm = tr_new_name((char *)json_string_value(jcomm));
528 /* store optional "orig_coi" field */
529 if ((NULL != (jorig_coi = json_object_get(jresp, "orig_coi"))) &&
530 (!json_is_object(jorig_coi))) {
531 tresp->orig_coi = tr_new_name((char *)json_string_value(jorig_coi));
538 /* Information records for TRP update msg
539 * requires that jrec already be allocated */
540 static TRP_RC tr_msg_encode_inforec_route(json_t *jrec, TRP_INFOREC *rec)
549 if (trp_inforec_get_trust_router(rec)==NULL)
552 s=tr_name_strdup(trp_inforec_get_trust_router(rec));
559 json_object_set_new(jrec, "trust_router", jstr);
561 jint=json_integer(trp_inforec_get_metric(rec));
564 json_object_set_new(jrec, "metric", jint);
566 jint=json_integer(trp_inforec_get_interval(rec));
569 json_object_set_new(jrec, "interval", jint);
574 /* returns a json array */
575 static json_t *tr_msg_encode_apcs(TR_APC *apcs)
577 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
578 TR_APC_ITER *iter=tr_apc_iter_new(tmp_ctx);
590 for (apc=tr_apc_iter_first(iter, apcs); apc!=NULL; apc=tr_apc_iter_next(iter)) {
591 jid=tr_name_to_json_string(tr_apc_get_id(apc));
592 if ((jid==NULL) || (json_array_append_new(jarray, jid)!=0)) {
600 talloc_free(tmp_ctx);
604 static TR_APC *tr_msg_decode_apcs(TALLOC_CTX *mem_ctx, json_t *jarray, TRP_RC *rc)
606 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
608 TR_APC *apc_list=NULL;
614 for (ii=0; ii<json_array_size(jarray); ii++) {
615 jstr=json_array_get(jarray, ii);
616 new=tr_apc_new(tmp_ctx);
617 if ((jstr==NULL) || (new==NULL) || (!json_is_string(jstr))) {
618 apc_list=NULL; /* these are all in tmp_ctx, so they'll still get cleaned up */
622 tr_apc_set_id(new, tr_new_name(json_string_value(jstr)));
623 if (tr_apc_get_id(new)==NULL) {
624 apc_list=NULL; /* these are all in tmp_ctx, so they'll still get cleaned up */
628 tr_apc_add(apc_list, new);
634 talloc_steal(mem_ctx, apc_list);
637 talloc_free(tmp_ctx);
641 static TRP_RC tr_msg_encode_inforec_comm(json_t *jrec, TRP_INFOREC *rec)
646 const char *sconst=NULL;
647 TR_COMM_TYPE commtype=TR_COMM_UNKNOWN;
652 commtype=trp_inforec_get_comm_type(rec);
653 if (commtype==TR_COMM_UNKNOWN) {
654 tr_notice("tr_msg_encode_inforec_comm: unknown community type.");
657 sconst=tr_comm_type_to_str(commtype);
660 jstr=json_string(sconst);
663 json_object_set_new(jrec, "type", jstr);
665 sconst=tr_realm_role_to_str(trp_inforec_get_role(rec));
667 tr_notice("tr_msg_encode_inforec_comm: unknown realm role.");
670 jstr=json_string(sconst);
673 json_object_set_new(jrec, "role", jstr);
675 japcs=tr_msg_encode_apcs(trp_inforec_get_apcs(rec));
677 tr_notice("tr_msg_encode_inforec_comm: error encoding APCs.");
680 json_object_set_new(jrec, "apcs", japcs);
683 if (trp_inforec_get_owner_realm(rec)!=NULL) {
684 jstr=tr_name_to_json_string(trp_inforec_get_owner_realm(rec));
687 json_object_set_new(jrec, "owner_realm", jstr);
690 if (trp_inforec_get_owner_contact(rec)!=NULL) {
691 jstr=tr_name_to_json_string(trp_inforec_get_owner_contact(rec));
694 json_object_set_new(jrec, "owner_contact", jstr);
697 json_object_set(jrec, "provenance", trp_inforec_get_provenance(rec));
699 jint=json_integer(trp_inforec_get_interval(rec));
702 json_object_set_new(jrec, "interval", jint);
707 static json_t *tr_msg_encode_inforec(TRP_INFOREC *rec)
712 if ((rec==NULL) || (trp_inforec_get_type(rec)==TRP_INFOREC_TYPE_UNKNOWN))
719 jstr=json_string(trp_inforec_type_to_string(trp_inforec_get_type(rec)));
724 json_object_set_new(jrec, "record_type", jstr);
727 case TRP_INFOREC_TYPE_ROUTE:
728 if (TRP_SUCCESS!=tr_msg_encode_inforec_route(jrec, rec)) {
733 case TRP_INFOREC_TYPE_COMMUNITY:
734 if (TRP_SUCCESS!=tr_msg_encode_inforec_comm(jrec, rec)) {
746 static TRP_RC tr_msg_decode_trp_inforec_route(json_t *jrecord, TRP_INFOREC *rec)
748 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
753 rc=tr_msg_get_json_string(jrecord, "trust_router", &s, tmp_ctx);
754 if (rc != TRP_SUCCESS)
756 if (TRP_SUCCESS!=trp_inforec_set_trust_router(rec, tr_new_name(s))) {
760 talloc_free(s); s=NULL;
762 trp_inforec_set_next_hop(rec, NULL); /* make sure this is null (filled in later) */
764 rc=tr_msg_get_json_integer(jrecord, "metric", &num);
765 if ((rc != TRP_SUCCESS) || (TRP_SUCCESS!=trp_inforec_set_metric(rec,num)))
768 rc=tr_msg_get_json_integer(jrecord, "interval", &num);
769 if ((rc != TRP_SUCCESS) || (TRP_SUCCESS!=trp_inforec_set_interval(rec,num)))
773 talloc_free(tmp_ctx);
777 static TRP_RC tr_msg_decode_trp_inforec_comm(json_t *jrecord, TRP_INFOREC *rec)
779 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
785 rc=tr_msg_get_json_string(jrecord, "type", &s, tmp_ctx);
786 if (rc != TRP_SUCCESS)
788 if (TRP_SUCCESS!=trp_inforec_set_comm_type(rec, tr_comm_type_from_str(s))) {
792 talloc_free(s); s=NULL;
794 rc=tr_msg_get_json_string(jrecord, "role", &s, tmp_ctx);
795 if (rc != TRP_SUCCESS)
797 if (TRP_SUCCESS!=trp_inforec_set_role(rec, tr_realm_role_from_str(s))) {
801 talloc_free(s); s=NULL;
803 apcs=tr_msg_decode_apcs(rec, json_object_get(jrecord, "apcs"), &rc);
804 if (rc!=TRP_SUCCESS) {
808 trp_inforec_set_apcs(rec, apcs);
810 rc=tr_msg_get_json_string(jrecord, "owner_realm", &s, tmp_ctx);
811 if (rc != TRP_SUCCESS)
813 if (TRP_SUCCESS!=trp_inforec_set_owner_realm(rec, tr_new_name(s))) {
817 talloc_free(s); s=NULL;
819 rc=tr_msg_get_json_string(jrecord, "owner_contact", &s, tmp_ctx);
820 if (rc != TRP_SUCCESS)
822 if (TRP_SUCCESS!=trp_inforec_set_owner_contact(rec, tr_new_name(s))) {
826 talloc_free(s); s=NULL;
828 trp_inforec_set_provenance(rec, json_object_get(jrecord, "provenance"));
830 rc=tr_msg_get_json_integer(jrecord, "interval", &num);
831 if ((rc != TRP_SUCCESS) || (TRP_SUCCESS!=trp_inforec_set_interval(rec,num)))
835 talloc_free(tmp_ctx);
839 /* decode a single record */
840 static TRP_INFOREC *tr_msg_decode_trp_inforec(TALLOC_CTX *mem_ctx, json_t *jrecord)
842 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
843 TRP_INFOREC_TYPE rectype;
844 TRP_INFOREC *rec=NULL;
848 if (TRP_SUCCESS!=tr_msg_get_json_string(jrecord, "record_type", &s, tmp_ctx))
851 rectype=trp_inforec_type_from_string(s);
852 talloc_free(s); s=NULL;
854 rec=trp_inforec_new(tmp_ctx, rectype);
860 tr_debug("tr_msg_decode_trp_inforec: '%s' record found.", trp_inforec_type_to_string(rec->type));
862 switch(trp_inforec_get_type(rec)) {
863 case TRP_INFOREC_TYPE_ROUTE:
864 rc=tr_msg_decode_trp_inforec_route(jrecord, rec);
866 case TRP_INFOREC_TYPE_COMMUNITY:
867 rc=tr_msg_decode_trp_inforec_comm(jrecord, rec);
874 talloc_steal(mem_ctx, rec);
878 if (rc != TRP_SUCCESS) {
879 trp_inforec_free(rec);
882 talloc_free(tmp_ctx);
887 static json_t *tr_msg_encode_trp_upd(TRP_UPD *update)
889 json_t *jupdate=NULL;
890 json_t *jrecords=NULL;
899 jupdate=json_object();
903 s=tr_name_strdup(trp_upd_get_comm(update));
905 json_decref(jupdate);
911 json_decref(jupdate);
914 json_object_set_new(jupdate, "community", jstr);
916 s=tr_name_strdup(trp_upd_get_realm(update));
918 json_decref(jupdate);
924 json_decref(jupdate);
927 json_object_set_new(jupdate, "realm", jstr);
929 jrecords=json_array();
930 if (jrecords==NULL) {
931 json_decref(jupdate);
934 json_object_set_new(jupdate, "records", jrecords); /* jrecords now a "borrowed" reference */
935 for (rec=trp_upd_get_inforec(update); rec!=NULL; rec=trp_inforec_get_next(rec)) {
936 tr_debug("tr_msg_encode_trp_upd: encoding inforec.");
937 jrec=tr_msg_encode_inforec(rec);
939 json_decref(jupdate); /* also decs jrecords and any elements */
942 if (0!=json_array_append_new(jrecords, jrec)) {
943 json_decref(jupdate); /* also decs jrecords and any elements */
944 json_decref(jrec); /* this one did not get added so dec explicitly */
952 /* Creates a linked list of records in the msg->body talloc context.
953 * An error will be returned if any unparseable records are encountered.
955 static TRP_UPD *tr_msg_decode_trp_upd(TALLOC_CTX *mem_ctx, json_t *jupdate)
957 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
958 json_t *jrecords=NULL;
960 TRP_UPD *update=NULL;
961 TRP_INFOREC *new_rec=NULL;
962 TRP_INFOREC *list_tail=NULL;
967 update=trp_upd_new(tmp_ctx);
973 rc=tr_msg_get_json_string(jupdate, "community", &s, tmp_ctx);
974 if (rc != TRP_SUCCESS) {
975 tr_debug("tr_msg_decode_trp_upd: no community in TRP update message.");
981 tr_debug("tr_msg_decode_trp_upd: could not allocate community name.");
985 talloc_free(s); s=NULL;
986 trp_upd_set_comm(update, name);
988 rc=tr_msg_get_json_string(jupdate, "realm", &s, tmp_ctx);
989 if (rc != TRP_SUCCESS) {
990 tr_debug("tr_msg_decode_trp_upd: no realm in TRP update message.");
996 tr_debug("tr_msg_decode_trp_upd: could not allocate realm name.");
1000 talloc_free(s); s=NULL;
1001 trp_upd_set_realm(update, name);
1003 jrecords=json_object_get(jupdate, "records");
1004 if ((jrecords==NULL) || (!json_is_array(jrecords))) {
1009 tr_debug("tr_msg_decode_trp_upd: found %d records", json_array_size(jrecords));
1010 /* process the array */
1011 for (ii=0; ii<json_array_size(jrecords); ii++) {
1012 new_rec=tr_msg_decode_trp_inforec(update, json_array_get(jrecords, ii));
1013 if (new_rec==NULL) {
1018 if (list_tail==NULL)
1019 trp_upd_set_inforec(update, new_rec); /* first is a special case */
1021 trp_inforec_set_next(list_tail, new_rec);
1026 /* Succeeded. Move new allocations into the correct talloc context */
1027 talloc_steal(mem_ctx, update);
1031 talloc_free(tmp_ctx);
1032 if (rc!=TRP_SUCCESS)
1037 static json_t *tr_msg_encode_trp_req(TRP_REQ *req)
1046 jbody=json_object();
1050 if ((NULL==trp_req_get_comm(req))
1051 || (NULL==trp_req_get_realm(req))) {
1056 s=tr_name_strdup(trp_req_get_comm(req)); /* ensures null termination */
1061 jstr=json_string(s);
1067 json_object_set_new(jbody, "community", jstr);
1069 s=tr_name_strdup(trp_req_get_realm(req)); /* ensures null termination */
1074 jstr=json_string(s);
1080 json_object_set_new(jbody, "realm", jstr);
1085 static TRP_REQ *tr_msg_decode_trp_req(TALLOC_CTX *mem_ctx, json_t *jreq)
1087 TALLOC_CTX *tmp_ctx=talloc_new(NULL);
1090 TRP_RC rc=TRP_ERROR;
1092 /* check message type and body type for agreement */
1093 req=trp_req_new(tmp_ctx);
1099 rc=tr_msg_get_json_string(jreq, "community", &s, tmp_ctx);
1100 if (rc!=TRP_SUCCESS)
1102 trp_req_set_comm(req, tr_new_name(s));
1103 talloc_free(s); s=NULL;
1105 rc=tr_msg_get_json_string(jreq, "realm", &s, tmp_ctx);
1106 if (rc!=TRP_SUCCESS)
1108 trp_req_set_realm(req, tr_new_name(s));
1109 talloc_free(s); s=NULL;
1112 talloc_steal(mem_ctx, req);
1115 talloc_free(tmp_ctx);
1116 if (rc!=TRP_SUCCESS)
1121 char *tr_msg_encode(TR_MSG *msg)
1124 json_t *jmsg_type=NULL;
1126 TID_RESP *tidresp=NULL;
1127 TID_REQ *tidreq=NULL;
1128 TRP_UPD *trpupd=NULL;
1129 TRP_REQ *trpreq=NULL;
1131 /* TBD -- add error handling */
1132 jmsg = json_object();
1134 switch (msg->msg_type)
1137 jmsg_type = json_string("tid_request");
1138 json_object_set_new(jmsg, "msg_type", jmsg_type);
1139 tidreq=tr_msg_get_req(msg);
1140 json_object_set_new(jmsg, "msg_body", tr_msg_encode_tidreq(tidreq));
1144 jmsg_type = json_string("tid_response");
1145 json_object_set_new(jmsg, "msg_type", jmsg_type);
1146 tidresp=tr_msg_get_resp(msg);
1147 json_object_set_new(jmsg, "msg_body", tr_msg_encode_tidresp(tidresp));
1151 jmsg_type = json_string("trp_update");
1152 json_object_set_new(jmsg, "msg_type", jmsg_type);
1153 trpupd=tr_msg_get_trp_upd(msg);
1154 json_object_set_new(jmsg, "msg_body", tr_msg_encode_trp_upd(trpupd));
1158 jmsg_type = json_string("trp_request");
1159 json_object_set_new(jmsg, "msg_type", jmsg_type);
1160 trpreq=tr_msg_get_trp_req(msg);
1161 json_object_set_new(jmsg, "msg_body", tr_msg_encode_trp_req(trpreq));
1169 encoded=json_dumps(jmsg, 0);
1170 tr_debug("tr_msg_encode: outgoing msg=%s", encoded);
1175 TR_MSG *tr_msg_decode(char *jbuf, size_t buflen)
1178 json_t *jmsg = NULL;
1182 const char *mtype = NULL;
1184 if (NULL == (jmsg = json_loadb(jbuf, buflen, JSON_DISABLE_EOF_CHECK, &rc))) {
1185 tr_debug("tr_msg_decode(): error loading object");
1189 if (!(msg = malloc(sizeof(TR_MSG)))) {
1190 tr_debug("tr_msg_decode(): Error allocating TR_MSG structure.");
1195 memset(msg, 0, sizeof(TR_MSG));
1197 if ((NULL == (jtype = json_object_get(jmsg, "msg_type"))) ||
1198 (NULL == (jbody = json_object_get(jmsg, "msg_body")))) {
1199 tr_debug("tr_msg_decode(): Error parsing message header.");
1201 tr_msg_free_decoded(msg);
1205 mtype = json_string_value(jtype);
1207 if (0 == strcmp(mtype, "tid_request")) {
1208 msg->msg_type = TID_REQUEST;
1209 tr_msg_set_req(msg, tr_msg_decode_tidreq(jbody));
1211 else if (0 == strcmp(mtype, "tid_response")) {
1212 msg->msg_type = TID_RESPONSE;
1213 tr_msg_set_resp(msg, tr_msg_decode_tidresp(jbody));
1215 else if (0 == strcmp(mtype, "trp_update")) {
1216 msg->msg_type = TRP_UPDATE;
1217 tr_msg_set_trp_upd(msg, tr_msg_decode_trp_upd(NULL, jbody)); /* null talloc context for now */
1219 else if (0 == strcmp(mtype, "trp_request")) {
1220 msg->msg_type = TRP_UPDATE;
1221 tr_msg_set_trp_req(msg, tr_msg_decode_trp_req(NULL, jbody)); /* null talloc context for now */
1224 msg->msg_type = TR_UNKNOWN;
1225 msg->msg_rep = NULL;
1230 void tr_msg_free_encoded(char *jmsg)
1236 void tr_msg_free_decoded(TR_MSG *msg)
1239 switch (msg->msg_type) {
1241 tid_req_free(tr_msg_get_req(msg));
1244 tid_resp_free(tr_msg_get_resp(msg));
1247 trp_upd_free(tr_msg_get_trp_upd(msg));
1250 trp_req_free(tr_msg_get_trp_req(msg));