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-rw-r--r--src/reclaim/plugin_rest_openid_connect.c2171
1 files changed, 0 insertions, 2171 deletions
diff --git a/src/reclaim/plugin_rest_openid_connect.c b/src/reclaim/plugin_rest_openid_connect.c
deleted file mode 100644
index 24673c692..000000000
--- a/src/reclaim/plugin_rest_openid_connect.c
+++ /dev/null
@@ -1,2171 +0,0 @@
1/*
2 This file is part of GNUnet.
3 Copyright (C) 2012-2015 GNUnet e.V.
4
5 GNUnet is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Affero General Public License as published
7 by the Free Software Foundation, either version 3 of the License,
8 or (at your option) any later version.
9
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Affero General Public License for more details.
14
15 You should have received a copy of the GNU Affero General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18/**
19 * @author Martin Schanzenbach
20 * @author Philippe Buschmann
21 * @file identity/plugin_rest_openid_connect.c
22 * @brief GNUnet Namestore REST plugin
23 *
24 */
25
26#include "platform.h"
27#include "gnunet_rest_plugin.h"
28#include "gnunet_identity_service.h"
29#include "gnunet_gns_service.h"
30#include "gnunet_gnsrecord_lib.h"
31#include "gnunet_namestore_service.h"
32#include "gnunet_rest_lib.h"
33#include "gnunet_jsonapi_lib.h"
34#include "gnunet_jsonapi_util.h"
35#include "microhttpd.h"
36#include <jansson.h>
37#include <inttypes.h>
38#include "gnunet_signatures.h"
39#include "gnunet_reclaim_attribute_lib.h"
40#include "gnunet_reclaim_service.h"
41#include "oidc_helper.h"
42
43/**
44 * REST root namespace
45 */
46#define GNUNET_REST_API_NS_OIDC "/openid"
47
48/**
49 * Authorize endpoint
50 */
51#define GNUNET_REST_API_NS_AUTHORIZE "/openid/authorize"
52
53/**
54 * Token endpoint
55 */
56#define GNUNET_REST_API_NS_TOKEN "/openid/token"
57
58/**
59 * UserInfo endpoint
60 */
61#define GNUNET_REST_API_NS_USERINFO "/openid/userinfo"
62
63/**
64 * Login namespace
65 */
66#define GNUNET_REST_API_NS_LOGIN "/openid/login"
67
68/**
69 * Attribute key
70 */
71#define GNUNET_REST_JSONAPI_RECLAIM_ATTRIBUTE "attribute"
72
73/**
74 * Ticket key
75 */
76#define GNUNET_REST_JSONAPI_IDENTITY_TICKET "ticket"
77
78
79/**
80 * Value key
81 */
82#define GNUNET_REST_JSONAPI_RECLAIM_ATTRIBUTE_VALUE "value"
83
84/**
85 * State while collecting all egos
86 */
87#define ID_REST_STATE_INIT 0
88
89/**
90 * Done collecting egos
91 */
92#define ID_REST_STATE_POST_INIT 1
93
94/**
95 * OIDC grant_type key
96 */
97#define OIDC_GRANT_TYPE_KEY "grant_type"
98
99/**
100 * OIDC grant_type key
101 */
102#define OIDC_GRANT_TYPE_VALUE "authorization_code"
103
104/**
105 * OIDC code key
106 */
107#define OIDC_CODE_KEY "code"
108
109/**
110 * OIDC response_type key
111 */
112#define OIDC_RESPONSE_TYPE_KEY "response_type"
113
114/**
115 * OIDC client_id key
116 */
117#define OIDC_CLIENT_ID_KEY "client_id"
118
119/**
120 * OIDC scope key
121 */
122#define OIDC_SCOPE_KEY "scope"
123
124/**
125 * OIDC redirect_uri key
126 */
127#define OIDC_REDIRECT_URI_KEY "redirect_uri"
128
129/**
130 * OIDC state key
131 */
132#define OIDC_STATE_KEY "state"
133
134/**
135 * OIDC nonce key
136 */
137#define OIDC_NONCE_KEY "nonce"
138
139/**
140 * OIDC cookie header key
141 */
142#define OIDC_COOKIE_HEADER_KEY "cookie"
143
144/**
145 * OIDC cookie header information key
146 */
147#define OIDC_AUTHORIZATION_HEADER_KEY "authorization"
148
149/**
150 * OIDC cookie header information key
151 */
152#define OIDC_COOKIE_HEADER_INFORMATION_KEY "Identity="
153
154/**
155 * OIDC expected response_type while authorizing
156 */
157#define OIDC_EXPECTED_AUTHORIZATION_RESPONSE_TYPE "code"
158
159/**
160 * OIDC expected scope part while authorizing
161 */
162#define OIDC_EXPECTED_AUTHORIZATION_SCOPE "openid"
163
164/**
165 * OIDC ignored parameter array
166 */
167static char* OIDC_ignored_parameter_array [] =
168{
169 "display",
170 "prompt",
171 "ui_locales",
172 "response_mode",
173 "id_token_hint",
174 "login_hint",
175 "acr_values"
176};
177
178/**
179 * OIDC authorized identities and times hashmap
180 */
181struct GNUNET_CONTAINER_MultiHashMap *OIDC_identity_login_time;
182
183/**
184 * OIDC authorized identities and times hashmap
185 */
186struct GNUNET_CONTAINER_MultiHashMap *OIDC_identity_grants;
187
188/**
189 * OIDC ticket/code use only once
190 */
191struct GNUNET_CONTAINER_MultiHashMap *OIDC_ticket_once;
192
193/**
194 * OIDC access_token to ticket and ego
195 */
196struct GNUNET_CONTAINER_MultiHashMap *OIDC_interpret_access_token;
197
198/**
199 * The configuration handle
200 */
201const struct GNUNET_CONFIGURATION_Handle *cfg;
202
203/**
204 * HTTP methods allows for this plugin
205 */
206static char* allow_methods;
207
208/**
209 * @brief struct returned by the initialization function of the plugin
210 */
211struct Plugin
212{
213 const struct GNUNET_CONFIGURATION_Handle *cfg;
214};
215
216/**
217 * OIDC needed variables
218 */
219struct OIDC_Variables
220{
221 /**
222 * The RP client public key
223 */
224 struct GNUNET_CRYPTO_EcdsaPublicKey client_pkey;
225
226 /**
227 * The OIDC client id of the RP
228 */
229 char *client_id;
230
231 /**
232 * The OIDC redirect uri
233 */
234 char *redirect_uri;
235
236 /**
237 * The list of oidc scopes
238 */
239 char *scope;
240
241 /**
242 * The OIDC state
243 */
244 char *state;
245
246 /**
247 * The OIDC nonce
248 */
249 char *nonce;
250
251 /**
252 * The OIDC response type
253 */
254 char *response_type;
255
256 /**
257 * The identity chosen by the user to login
258 */
259 char *login_identity;
260
261 /**
262 * The response JSON
263 */
264 json_t *response;
265
266};
267
268/**
269 * The ego list
270 */
271struct EgoEntry
272{
273 /**
274 * DLL
275 */
276 struct EgoEntry *next;
277
278 /**
279 * DLL
280 */
281 struct EgoEntry *prev;
282
283 /**
284 * Ego Identifier
285 */
286 char *identifier;
287
288 /**
289 * Public key string
290 */
291 char *keystring;
292
293 /**
294 * The Ego
295 */
296 struct GNUNET_IDENTITY_Ego *ego;
297};
298
299
300struct RequestHandle
301{
302 /**
303 * Ego list
304 */
305 struct EgoEntry *ego_head;
306
307 /**
308 * Ego list
309 */
310 struct EgoEntry *ego_tail;
311
312 /**
313 * Selected ego
314 */
315 struct EgoEntry *ego_entry;
316
317 /**
318 * Pointer to ego private key
319 */
320 struct GNUNET_CRYPTO_EcdsaPrivateKey priv_key;
321
322 /**
323 * OIDC variables
324 */
325 struct OIDC_Variables *oidc;
326
327 /**
328 * The processing state
329 */
330 int state;
331
332 /**
333 * Handle to Identity service.
334 */
335 struct GNUNET_IDENTITY_Handle *identity_handle;
336
337 /**
338 * Rest connection
339 */
340 struct GNUNET_REST_RequestHandle *rest_handle;
341
342 /**
343 * GNS handle
344 */
345 struct GNUNET_GNS_Handle *gns_handle;
346
347 /**
348 * GNS lookup op
349 */
350 struct GNUNET_GNS_LookupRequest *gns_op;
351
352 /**
353 * Handle to NAMESTORE
354 */
355 struct GNUNET_NAMESTORE_Handle *namestore_handle;
356
357 /**
358 * Iterator for NAMESTORE
359 */
360 struct GNUNET_NAMESTORE_ZoneIterator *namestore_handle_it;
361
362 /**
363 * Attribute claim list
364 */
365 struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList *attr_list;
366
367 /**
368 * IDENTITY Operation
369 */
370 struct GNUNET_IDENTITY_Operation *op;
371
372 /**
373 * Identity Provider
374 */
375 struct GNUNET_RECLAIM_Handle *idp;
376
377 /**
378 * Idp Operation
379 */
380 struct GNUNET_RECLAIM_Operation *idp_op;
381
382 /**
383 * Attribute iterator
384 */
385 struct GNUNET_RECLAIM_AttributeIterator *attr_it;
386
387 /**
388 * Ticket iterator
389 */
390 struct GNUNET_RECLAIM_TicketIterator *ticket_it;
391
392 /**
393 * A ticket
394 */
395 struct GNUNET_RECLAIM_Ticket ticket;
396
397 /**
398 * Desired timeout for the lookup (default is no timeout).
399 */
400 struct GNUNET_TIME_Relative timeout;
401
402 /**
403 * ID of a task associated with the resolution process.
404 */
405 struct GNUNET_SCHEDULER_Task *timeout_task;
406
407 /**
408 * The plugin result processor
409 */
410 GNUNET_REST_ResultProcessor proc;
411
412 /**
413 * The closure of the result processor
414 */
415 void *proc_cls;
416
417 /**
418 * The url
419 */
420 char *url;
421
422 /**
423 * The tld for redirect
424 */
425 char *tld;
426
427 /**
428 * The redirect prefix
429 */
430 char *redirect_prefix;
431
432 /**
433 * The redirect suffix
434 */
435 char *redirect_suffix;
436
437 /**
438 * Error response message
439 */
440 char *emsg;
441
442 /**
443 * Error response description
444 */
445 char *edesc;
446
447 /**
448 * Reponse code
449 */
450 int response_code;
451
452 /**
453 * Response object
454 */
455 struct GNUNET_JSONAPI_Document *resp_object;
456
457};
458
459/**
460 * Cleanup lookup handle
461 * @param handle Handle to clean up
462 */
463static void
464cleanup_handle (struct RequestHandle *handle)
465{
466 struct GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry *claim_entry;
467 struct GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry *claim_tmp;
468 struct EgoEntry *ego_entry;
469 struct EgoEntry *ego_tmp;
470 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
471 "Cleaning up\n");
472 if (NULL != handle->resp_object)
473 GNUNET_JSONAPI_document_delete (handle->resp_object);
474 if (NULL != handle->timeout_task)
475 GNUNET_SCHEDULER_cancel (handle->timeout_task);
476 if (NULL != handle->identity_handle)
477 GNUNET_IDENTITY_disconnect (handle->identity_handle);
478 if (NULL != handle->attr_it)
479 GNUNET_RECLAIM_get_attributes_stop (handle->attr_it);
480 if (NULL != handle->ticket_it)
481 GNUNET_RECLAIM_ticket_iteration_stop (handle->ticket_it);
482 if (NULL != handle->idp)
483 GNUNET_RECLAIM_disconnect (handle->idp);
484 if (NULL != handle->url)
485 GNUNET_free (handle->url);
486 if (NULL != handle->tld)
487 GNUNET_free (handle->tld);
488 if (NULL != handle->redirect_prefix)
489 GNUNET_free (handle->redirect_prefix);
490 if (NULL != handle->redirect_suffix)
491 GNUNET_free (handle->redirect_suffix);
492 if (NULL != handle->emsg)
493 GNUNET_free (handle->emsg);
494 if (NULL != handle->edesc)
495 GNUNET_free (handle->edesc);
496 if (NULL != handle->gns_op)
497 GNUNET_GNS_lookup_cancel (handle->gns_op);
498 if (NULL != handle->gns_handle)
499 GNUNET_GNS_disconnect (handle->gns_handle);
500
501 if (NULL != handle->namestore_handle)
502 GNUNET_NAMESTORE_disconnect (handle->namestore_handle);
503 if (NULL != handle->oidc)
504 {
505 if (NULL != handle->oidc->client_id)
506 GNUNET_free(handle->oidc->client_id);
507 if (NULL != handle->oidc->login_identity)
508 GNUNET_free(handle->oidc->login_identity);
509 if (NULL != handle->oidc->nonce)
510 GNUNET_free(handle->oidc->nonce);
511 if (NULL != handle->oidc->redirect_uri)
512 GNUNET_free(handle->oidc->redirect_uri);
513 if (NULL != handle->oidc->response_type)
514 GNUNET_free(handle->oidc->response_type);
515 if (NULL != handle->oidc->scope)
516 GNUNET_free(handle->oidc->scope);
517 if (NULL != handle->oidc->state)
518 GNUNET_free(handle->oidc->state);
519 if (NULL != handle->oidc->response)
520 json_decref(handle->oidc->response);
521 GNUNET_free(handle->oidc);
522 }
523 if ( NULL != handle->attr_list )
524 {
525 for (claim_entry = handle->attr_list->list_head;
526 NULL != claim_entry;)
527 {
528 claim_tmp = claim_entry;
529 claim_entry = claim_entry->next;
530 GNUNET_free(claim_tmp->claim);
531 GNUNET_free(claim_tmp);
532 }
533 GNUNET_free (handle->attr_list);
534 }
535 for (ego_entry = handle->ego_head;
536 NULL != ego_entry;)
537 {
538 ego_tmp = ego_entry;
539 ego_entry = ego_entry->next;
540 GNUNET_free (ego_tmp->identifier);
541 GNUNET_free (ego_tmp->keystring);
542 GNUNET_free (ego_tmp);
543 }
544 if (NULL != handle->attr_it)
545 {
546 GNUNET_free(handle->attr_it);
547 }
548 GNUNET_free (handle);
549}
550
551static void
552cleanup_handle_delayed (void *cls)
553{
554 cleanup_handle (cls);
555}
556
557
558/**
559 * Task run on error, sends error message. Cleans up everything.
560 *
561 * @param cls the `struct RequestHandle`
562 */
563static void
564do_error (void *cls)
565{
566 struct RequestHandle *handle = cls;
567 struct MHD_Response *resp;
568 char *json_error;
569
570 GNUNET_asprintf (&json_error, "{ \"error\" : \"%s\", \"error_description\" : \"%s\"%s%s%s}",
571 handle->emsg,
572 (NULL != handle->edesc) ? handle->edesc : "",
573 (NULL != handle->oidc->state) ? ", \"state\":\"" : "",
574 (NULL != handle->oidc->state) ? handle->oidc->state : "",
575 (NULL != handle->oidc->state) ? "\"" : "");
576 if ( 0 == handle->response_code )
577 {
578 handle->response_code = MHD_HTTP_BAD_REQUEST;
579 }
580 resp = GNUNET_REST_create_response (json_error);
581 if (MHD_HTTP_UNAUTHORIZED == handle->response_code)
582 {
583 MHD_add_response_header(resp, "WWW-Authenticate", "Basic");
584 }
585 MHD_add_response_header (resp, "Content-Type", "application/json");
586 handle->proc (handle->proc_cls, resp, handle->response_code);
587 GNUNET_SCHEDULER_add_now (&cleanup_handle_delayed, handle);
588 GNUNET_free (json_error);
589}
590
591
592/**
593 * Task run on error in userinfo endpoint, sends error header. Cleans up
594 * everything
595 *
596 * @param cls the `struct RequestHandle`
597 */
598static void
599do_userinfo_error (void *cls)
600{
601 struct RequestHandle *handle = cls;
602 struct MHD_Response *resp;
603 char *error;
604
605 GNUNET_asprintf (&error, "error=\"%s\", error_description=\"%s\"",
606 handle->emsg,
607 (NULL != handle->edesc) ? handle->edesc : "");
608 resp = GNUNET_REST_create_response ("");
609 MHD_add_response_header(resp, "WWW-Authenticate", error);
610 handle->proc (handle->proc_cls, resp, handle->response_code);
611 GNUNET_SCHEDULER_add_now (&cleanup_handle_delayed, handle);
612 GNUNET_free (error);
613}
614
615
616/**
617 * Task run on error, sends error message and redirects. Cleans up everything.
618 *
619 * @param cls the `struct RequestHandle`
620 */
621static void
622do_redirect_error (void *cls)
623{
624 struct RequestHandle *handle = cls;
625 struct MHD_Response *resp;
626 char* redirect;
627 GNUNET_asprintf (&redirect,
628 "%s?error=%s&error_description=%s%s%s",
629 handle->oidc->redirect_uri, handle->emsg, handle->edesc,
630 (NULL != handle->oidc->state) ? "&state=" : "",
631 (NULL != handle->oidc->state) ? handle->oidc->state : "");
632 resp = GNUNET_REST_create_response ("");
633 MHD_add_response_header (resp, "Location", redirect);
634 handle->proc (handle->proc_cls, resp, MHD_HTTP_FOUND);
635 GNUNET_SCHEDULER_add_now (&cleanup_handle_delayed, handle);
636 GNUNET_free (redirect);
637}
638
639/**
640 * Task run on timeout, sends error message. Cleans up everything.
641 *
642 * @param cls the `struct RequestHandle`
643 */
644static void
645do_timeout (void *cls)
646{
647 struct RequestHandle *handle = cls;
648
649 handle->timeout_task = NULL;
650 do_error (handle);
651}
652
653/**
654 * Return attributes for claim
655 *
656 * @param cls the request handle
657 */
658static void
659return_userinfo_response (void *cls)
660{
661 char* result_str;
662 struct RequestHandle *handle = cls;
663 struct MHD_Response *resp;
664
665 result_str = json_dumps (handle->oidc->response, 0);
666
667 resp = GNUNET_REST_create_response (result_str);
668 handle->proc (handle->proc_cls, resp, MHD_HTTP_OK);
669 GNUNET_free (result_str);
670 cleanup_handle (handle);
671}
672
673/**
674 * Returns base64 encoded string without padding
675 *
676 * @param string the string to encode
677 * @return base64 encoded string
678 */
679static char*
680base_64_encode(const char *s)
681{
682 char *enc;
683 char *tmp;
684
685 GNUNET_STRINGS_base64_encode(s, strlen(s), &enc);
686 tmp = strrchr (enc, '=');
687 *tmp = '\0';
688 return enc;
689}
690
691/**
692 * Respond to OPTIONS request
693 *
694 * @param con_handle the connection handle
695 * @param url the url
696 * @param cls the RequestHandle
697 */
698static void
699options_cont (struct GNUNET_REST_RequestHandle *con_handle,
700 const char* url,
701 void *cls)
702{
703 struct MHD_Response *resp;
704 struct RequestHandle *handle = cls;
705
706 //For now, independent of path return all options
707 resp = GNUNET_REST_create_response (NULL);
708 MHD_add_response_header (resp,
709 "Access-Control-Allow-Methods",
710 allow_methods);
711 handle->proc (handle->proc_cls, resp, MHD_HTTP_OK);
712 cleanup_handle (handle);
713 return;
714}
715
716/**
717 * Interprets cookie header and pass its identity keystring to handle
718 */
719static void
720cookie_identity_interpretation (struct RequestHandle *handle)
721{
722 struct GNUNET_HashCode cache_key;
723 char *cookies;
724 struct GNUNET_TIME_Absolute current_time, *relog_time;
725 char delimiter[] = "; ";
726
727 //gets identity of login try with cookie
728 GNUNET_CRYPTO_hash (OIDC_COOKIE_HEADER_KEY, strlen (OIDC_COOKIE_HEADER_KEY),
729 &cache_key);
730 if ( GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->header_param_map,
731 &cache_key) )
732 {
733 //splits cookies and find 'Identity' cookie
734 cookies = GNUNET_CONTAINER_multihashmap_get ( handle->rest_handle->header_param_map, &cache_key);
735 handle->oidc->login_identity = strtok(cookies, delimiter);
736
737 while ( NULL != handle->oidc->login_identity )
738 {
739 if ( NULL != strstr (handle->oidc->login_identity, OIDC_COOKIE_HEADER_INFORMATION_KEY) )
740 {
741 break;
742 }
743 handle->oidc->login_identity = strtok (NULL, delimiter);
744 }
745 GNUNET_CRYPTO_hash (handle->oidc->login_identity, strlen (handle->oidc->login_identity),
746 &cache_key);
747 if ( GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains (OIDC_identity_login_time, &cache_key) )
748 {
749 relog_time = GNUNET_CONTAINER_multihashmap_get (OIDC_identity_login_time,
750 &cache_key);
751 current_time = GNUNET_TIME_absolute_get ();
752 // 30 min after old login -> redirect to login
753 if ( current_time.abs_value_us <= relog_time->abs_value_us )
754 {
755 handle->oidc->login_identity = strtok(handle->oidc->login_identity, OIDC_COOKIE_HEADER_INFORMATION_KEY);
756 handle->oidc->login_identity = GNUNET_strdup(handle->oidc->login_identity);
757 } else {
758 handle->oidc->login_identity = NULL;
759 }
760 }
761 else
762 {
763 handle->oidc->login_identity = NULL;
764 }
765 }
766}
767
768/**
769 * Redirects to login page stored in configuration file
770 */
771static void
772login_redirection(void *cls)
773{
774 char *login_base_url;
775 char *new_redirect;
776 struct MHD_Response *resp;
777 struct RequestHandle *handle = cls;
778
779 if ( GNUNET_OK
780 == GNUNET_CONFIGURATION_get_value_string (cfg, "reclaim-rest-plugin",
781 "address", &login_base_url) )
782 {
783 GNUNET_asprintf (&new_redirect, "%s?%s=%s&%s=%s&%s=%s&%s=%s&%s=%s&%s=%s",
784 login_base_url,
785 OIDC_RESPONSE_TYPE_KEY,
786 handle->oidc->response_type,
787 OIDC_CLIENT_ID_KEY,
788 handle->oidc->client_id,
789 OIDC_REDIRECT_URI_KEY,
790 handle->oidc->redirect_uri,
791 OIDC_SCOPE_KEY,
792 handle->oidc->scope,
793 OIDC_STATE_KEY,
794 (NULL != handle->oidc->state) ? handle->oidc->state : "",
795 OIDC_NONCE_KEY,
796 (NULL != handle->oidc->nonce) ? handle->oidc->nonce : "");
797 resp = GNUNET_REST_create_response ("");
798 MHD_add_response_header (resp, "Location", new_redirect);
799 GNUNET_free(login_base_url);
800 }
801 else
802 {
803 handle->emsg = GNUNET_strdup("server_error");
804 handle->edesc = GNUNET_strdup ("gnunet configuration failed");
805 handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
806 GNUNET_SCHEDULER_add_now (&do_error, handle);
807 return;
808 }
809 handle->proc (handle->proc_cls, resp, MHD_HTTP_FOUND);
810 GNUNET_free(new_redirect);
811 GNUNET_SCHEDULER_add_now (&cleanup_handle_delayed, handle);
812}
813
814/**
815 * Does internal server error when iteration failed.
816 */
817static void
818oidc_iteration_error (void *cls)
819{
820 struct RequestHandle *handle = cls;
821 handle->emsg = GNUNET_strdup("INTERNAL_SERVER_ERROR");
822 handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
823 GNUNET_SCHEDULER_add_now (&do_error, handle);
824}
825
826static void
827get_client_name_result (void *cls,
828 const struct GNUNET_CRYPTO_EcdsaPrivateKey *zone,
829 const char *label,
830 unsigned int rd_count,
831 const struct GNUNET_GNSRECORD_Data *rd)
832{
833 struct RequestHandle *handle = cls;
834 struct MHD_Response *resp;
835 char *ticket_str;
836 char *redirect_uri;
837 char *code_json_string;
838 char *code_base64_final_string;
839
840 ticket_str = GNUNET_STRINGS_data_to_string_alloc (&handle->ticket,
841 sizeof (struct GNUNET_RECLAIM_Ticket));
842 //TODO change if more attributes are needed (see max_age)
843 code_json_string = OIDC_build_authz_code (&handle->priv_key,
844 &handle->ticket,
845 handle->oidc->nonce);
846 code_base64_final_string = base_64_encode(code_json_string);
847 GNUNET_asprintf (&redirect_uri, "%s.%s/%s?%s=%s&state=%s",
848 handle->redirect_prefix,
849 handle->tld,
850 handle->redirect_suffix,
851 handle->oidc->response_type,
852 code_base64_final_string, handle->oidc->state);
853 resp = GNUNET_REST_create_response ("");
854 MHD_add_response_header (resp, "Location", redirect_uri);
855 handle->proc (handle->proc_cls, resp, MHD_HTTP_FOUND);
856 GNUNET_SCHEDULER_add_now (&cleanup_handle_delayed, handle);
857 GNUNET_free (redirect_uri);
858 GNUNET_free (ticket_str);
859 GNUNET_free (code_json_string);
860 GNUNET_free (code_base64_final_string);
861 return;
862
863}
864
865
866static void
867get_client_name_error (void *cls)
868{
869 struct RequestHandle *handle = cls;
870
871 handle->emsg = GNUNET_strdup("server_error");
872 handle->edesc = GNUNET_strdup("Server cannot generate ticket, no name found for client.");
873 GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
874}
875
876
877static void
878lookup_redirect_uri_result (void *cls,
879 uint32_t rd_count,
880 const struct GNUNET_GNSRECORD_Data *rd)
881{
882 struct RequestHandle *handle = cls;
883 char *tmp;
884 char *tmp_key_str;
885 char *pos;
886 struct GNUNET_CRYPTO_EcdsaPublicKey redirect_zone;
887
888 handle->gns_op = NULL;
889 if (0 == rd_count)
890 {
891 handle->emsg = GNUNET_strdup("server_error");
892 handle->edesc = GNUNET_strdup("Server cannot generate ticket, redirect uri not found.");
893 GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
894 return;
895 }
896 for (int i = 0; i < rd_count; i++)
897 {
898 if (GNUNET_GNSRECORD_TYPE_RECLAIM_OIDC_REDIRECT != rd[i].record_type)
899 continue;
900 if (0 != strcmp (rd[i].data,
901 handle->oidc->redirect_uri))
902 continue;
903 tmp = GNUNET_strdup (rd[i].data);
904 pos = strrchr (tmp,
905 (unsigned char) '.');
906 *pos = '\0';
907 handle->redirect_prefix = GNUNET_strdup (tmp);
908 tmp_key_str = pos + 1;
909 pos = strchr (tmp_key_str,
910 (unsigned char) '/');
911 *pos = '\0';
912 handle->redirect_suffix = GNUNET_strdup (pos + 1);
913
914 GNUNET_STRINGS_string_to_data (tmp_key_str,
915 strlen (tmp_key_str),
916 &redirect_zone,
917 sizeof (redirect_zone));
918
919 GNUNET_NAMESTORE_zone_to_name (handle->namestore_handle,
920 &handle->priv_key,
921 &redirect_zone,
922 &get_client_name_error,
923 handle,
924 &get_client_name_result,
925 handle);
926 GNUNET_free (tmp);
927 return;
928 }
929 handle->emsg = GNUNET_strdup("server_error");
930 handle->edesc = GNUNET_strdup("Server cannot generate ticket, redirect uri not found.");
931 GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
932}
933
934/**
935 * Issues ticket and redirects to relying party with the authorization code as
936 * parameter. Otherwise redirects with error
937 */
938static void
939oidc_ticket_issue_cb (void* cls,
940 const struct GNUNET_RECLAIM_Ticket *ticket)
941{
942 struct RequestHandle *handle = cls;
943
944 handle->idp_op = NULL;
945 handle->ticket = *ticket;
946 if (NULL == ticket)
947 {
948 handle->emsg = GNUNET_strdup("server_error");
949 handle->edesc = GNUNET_strdup("Server cannot generate ticket.");
950 GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
951 return;
952 }
953 handle->gns_op = GNUNET_GNS_lookup (handle->gns_handle,
954 "+",
955 &handle->oidc->client_pkey,
956 GNUNET_GNSRECORD_TYPE_RECLAIM_OIDC_REDIRECT,
957 GNUNET_GNS_LO_DEFAULT,
958 &lookup_redirect_uri_result,
959 handle);
960
961}
962
963static void
964oidc_collect_finished_cb (void *cls)
965{
966 struct RequestHandle *handle = cls;
967 handle->attr_it = NULL;
968 handle->ticket_it = NULL;
969 if (NULL == handle->attr_list->list_head)
970 {
971 handle->emsg = GNUNET_strdup("invalid_scope");
972 handle->edesc = GNUNET_strdup("The requested scope is not available.");
973 GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
974 return;
975 }
976 handle->idp_op = GNUNET_RECLAIM_ticket_issue (handle->idp,
977 &handle->priv_key,
978 &handle->oidc->client_pkey,
979 handle->attr_list,
980 &oidc_ticket_issue_cb,
981 handle);
982}
983
984
985/**
986 * Collects all attributes for an ego if in scope parameter
987 */
988static void
989oidc_attr_collect (void *cls,
990 const struct GNUNET_CRYPTO_EcdsaPublicKey *identity,
991 const struct GNUNET_RECLAIM_ATTRIBUTE_Claim *attr)
992{
993 struct RequestHandle *handle = cls;
994 struct GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry *le;
995 char* scope_variables;
996 char* scope_variable;
997 char delimiter[]=" ";
998
999 if ( (NULL == attr->name) || (NULL == attr->data) )
1000 {
1001 GNUNET_RECLAIM_get_attributes_next (handle->attr_it);
1002 return;
1003 }
1004
1005 scope_variables = GNUNET_strdup(handle->oidc->scope);
1006 scope_variable = strtok (scope_variables, delimiter);
1007 while (NULL != scope_variable)
1008 {
1009 if ( 0 == strcmp (attr->name, scope_variable) )
1010 {
1011 break;
1012 }
1013 scope_variable = strtok (NULL, delimiter);
1014 }
1015 if ( NULL == scope_variable )
1016 {
1017 GNUNET_RECLAIM_get_attributes_next (handle->attr_it);
1018 GNUNET_free(scope_variables);
1019 return;
1020 }
1021 GNUNET_free(scope_variables);
1022
1023 le = GNUNET_new(struct GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry);
1024 le->claim = GNUNET_RECLAIM_ATTRIBUTE_claim_new (attr->name, attr->type,
1025 attr->data, attr->data_size);
1026 GNUNET_CONTAINER_DLL_insert(handle->attr_list->list_head,
1027 handle->attr_list->list_tail, le);
1028 GNUNET_RECLAIM_get_attributes_next (handle->attr_it);
1029}
1030
1031
1032/**
1033 * Checks time and cookie and redirects accordingly
1034 */
1035static void
1036login_check (void *cls)
1037{
1038 struct RequestHandle *handle = cls;
1039 struct GNUNET_TIME_Absolute current_time, *relog_time;
1040 struct GNUNET_CRYPTO_EcdsaPublicKey pubkey, ego_pkey;
1041 struct GNUNET_HashCode cache_key;
1042 char *identity_cookie;
1043
1044 GNUNET_asprintf (&identity_cookie, "Identity=%s", handle->oidc->login_identity);
1045 GNUNET_CRYPTO_hash (identity_cookie, strlen (identity_cookie), &cache_key);
1046 GNUNET_free(identity_cookie);
1047 //No login time for identity -> redirect to login
1048 if ( GNUNET_YES
1049 == GNUNET_CONTAINER_multihashmap_contains (OIDC_identity_login_time,
1050 &cache_key) )
1051 {
1052 relog_time = GNUNET_CONTAINER_multihashmap_get (OIDC_identity_login_time,
1053 &cache_key);
1054 current_time = GNUNET_TIME_absolute_get ();
1055 // 30 min after old login -> redirect to login
1056 if ( current_time.abs_value_us <= relog_time->abs_value_us )
1057 {
1058 if ( GNUNET_OK
1059 != GNUNET_CRYPTO_ecdsa_public_key_from_string (
1060 handle->oidc->login_identity,
1061 strlen (handle->oidc->login_identity), &pubkey) )
1062 {
1063 handle->emsg = GNUNET_strdup("invalid_cookie");
1064 handle->edesc = GNUNET_strdup(
1065 "The cookie of a login identity is not valid");
1066 GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
1067 return;
1068 }
1069 // iterate over egos and compare their public key
1070 for (handle->ego_entry = handle->ego_head;
1071 NULL != handle->ego_entry; handle->ego_entry = handle->ego_entry->next)
1072 {
1073 GNUNET_IDENTITY_ego_get_public_key (handle->ego_entry->ego, &ego_pkey);
1074 if ( 0
1075 == memcmp (&ego_pkey, &pubkey,
1076 sizeof(struct GNUNET_CRYPTO_EcdsaPublicKey)) )
1077 {
1078 handle->priv_key = *GNUNET_IDENTITY_ego_get_private_key (
1079 handle->ego_entry->ego);
1080 handle->resp_object = GNUNET_JSONAPI_document_new ();
1081 handle->idp = GNUNET_RECLAIM_connect (cfg);
1082 handle->attr_list = GNUNET_new(
1083 struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList);
1084 handle->attr_it = GNUNET_RECLAIM_get_attributes_start (
1085 handle->idp, &handle->priv_key, &oidc_iteration_error, handle,
1086 &oidc_attr_collect, handle, &oidc_collect_finished_cb, handle);
1087 return;
1088 }
1089 }
1090 //handle->emsg = GNUNET_strdup("invalid_cookie");
1091 //handle->edesc = GNUNET_strdup(
1092 // "The cookie of the login identity is not valid");
1093 //GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
1094 GNUNET_SCHEDULER_add_now (&login_redirection,handle);
1095 return;
1096 }
1097 }
1098}
1099
1100/**
1101 * Iteration over all results finished, build final
1102 * response.
1103 *
1104 * @param cls the `struct RequestHandle`
1105 */
1106static void
1107build_authz_response (void *cls)
1108{
1109 struct RequestHandle *handle = cls;
1110 struct GNUNET_HashCode cache_key;
1111
1112 char *expected_scope;
1113 char delimiter[]=" ";
1114 int number_of_ignored_parameter, iterator;
1115
1116
1117 // REQUIRED value: redirect_uri
1118 GNUNET_CRYPTO_hash (OIDC_REDIRECT_URI_KEY, strlen (OIDC_REDIRECT_URI_KEY),
1119 &cache_key);
1120 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->url_param_map,
1121 &cache_key))
1122 {
1123 handle->emsg=GNUNET_strdup("invalid_request");
1124 handle->edesc=GNUNET_strdup("missing parameter redirect_uri");
1125 GNUNET_SCHEDULER_add_now (&do_error, handle);
1126 return;
1127 }
1128 handle->oidc->redirect_uri = GNUNET_strdup (GNUNET_CONTAINER_multihashmap_get(handle->rest_handle->url_param_map,
1129 &cache_key));
1130
1131 // REQUIRED value: response_type
1132 GNUNET_CRYPTO_hash (OIDC_RESPONSE_TYPE_KEY, strlen (OIDC_RESPONSE_TYPE_KEY),
1133 &cache_key);
1134 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->url_param_map,
1135 &cache_key))
1136 {
1137 handle->emsg=GNUNET_strdup("invalid_request");
1138 handle->edesc=GNUNET_strdup("missing parameter response_type");
1139 GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
1140 return;
1141 }
1142 handle->oidc->response_type = GNUNET_CONTAINER_multihashmap_get(handle->rest_handle->url_param_map,
1143 &cache_key);
1144 handle->oidc->response_type = GNUNET_strdup (handle->oidc->response_type);
1145
1146 // REQUIRED value: scope
1147 GNUNET_CRYPTO_hash (OIDC_SCOPE_KEY, strlen (OIDC_SCOPE_KEY), &cache_key);
1148 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->url_param_map,
1149 &cache_key))
1150 {
1151 handle->emsg=GNUNET_strdup("invalid_request");
1152 handle->edesc=GNUNET_strdup("missing parameter scope");
1153 GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
1154 return;
1155 }
1156 handle->oidc->scope = GNUNET_CONTAINER_multihashmap_get(handle->rest_handle->url_param_map,
1157 &cache_key);
1158 handle->oidc->scope = GNUNET_strdup(handle->oidc->scope);
1159
1160 //OPTIONAL value: nonce
1161 GNUNET_CRYPTO_hash (OIDC_NONCE_KEY, strlen (OIDC_NONCE_KEY), &cache_key);
1162 if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->url_param_map,
1163 &cache_key))
1164 {
1165 handle->oidc->nonce = GNUNET_CONTAINER_multihashmap_get(handle->rest_handle->url_param_map,
1166 &cache_key);
1167 handle->oidc->nonce = GNUNET_strdup (handle->oidc->nonce);
1168 }
1169
1170 //TODO check other values if needed
1171 number_of_ignored_parameter = sizeof(OIDC_ignored_parameter_array) / sizeof(char *);
1172 for( iterator = 0; iterator < number_of_ignored_parameter; iterator++ )
1173 {
1174 GNUNET_CRYPTO_hash (OIDC_ignored_parameter_array[iterator],
1175 strlen(OIDC_ignored_parameter_array[iterator]),
1176 &cache_key);
1177 if(GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains(handle->rest_handle->url_param_map,
1178 &cache_key))
1179 {
1180 handle->emsg=GNUNET_strdup("access_denied");
1181 GNUNET_asprintf (&handle->edesc, "Server will not handle parameter: %s",
1182 OIDC_ignored_parameter_array[iterator]);
1183 GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
1184 return;
1185 }
1186 }
1187
1188 // Checks if response_type is 'code'
1189 if( 0 != strcmp( handle->oidc->response_type, OIDC_EXPECTED_AUTHORIZATION_RESPONSE_TYPE ) )
1190 {
1191 handle->emsg=GNUNET_strdup("unsupported_response_type");
1192 handle->edesc=GNUNET_strdup("The authorization server does not support "
1193 "obtaining this authorization code.");
1194 GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
1195 return;
1196 }
1197
1198 // Checks if scope contains 'openid'
1199 expected_scope = GNUNET_strdup(handle->oidc->scope);
1200 char* test;
1201 test = strtok (expected_scope, delimiter);
1202 while (NULL != test)
1203 {
1204 if ( 0 == strcmp (OIDC_EXPECTED_AUTHORIZATION_SCOPE, expected_scope) )
1205 {
1206 break;
1207 }
1208 test = strtok (NULL, delimiter);
1209 }
1210 if (NULL == test)
1211 {
1212 handle->emsg = GNUNET_strdup("invalid_scope");
1213 handle->edesc=GNUNET_strdup("The requested scope is invalid, unknown, or "
1214 "malformed.");
1215 GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
1216 GNUNET_free(expected_scope);
1217 return;
1218 }
1219
1220 GNUNET_free(expected_scope);
1221
1222 if( NULL != handle->oidc->login_identity )
1223 {
1224 GNUNET_SCHEDULER_add_now(&login_check,handle);
1225 return;
1226 }
1227
1228 GNUNET_SCHEDULER_add_now(&login_redirection,handle);
1229}
1230
1231/**
1232 * Responds to authorization GET and url-encoded POST request
1233 *
1234 * @param con_handle the connection handle
1235 * @param url the url
1236 * @param cls the RequestHandle
1237 */
1238static void
1239authorize_endpoint (struct GNUNET_REST_RequestHandle *con_handle,
1240 const char* url,
1241 void *cls)
1242{
1243 struct RequestHandle *handle = cls;
1244 struct GNUNET_HashCode cache_key;
1245 struct EgoEntry *tmp_ego;
1246 const struct GNUNET_CRYPTO_EcdsaPrivateKey *priv_key;
1247 struct GNUNET_CRYPTO_EcdsaPublicKey pkey;
1248
1249 cookie_identity_interpretation(handle);
1250
1251 //RECOMMENDED value: state - REQUIRED for answers
1252 GNUNET_CRYPTO_hash (OIDC_STATE_KEY, strlen (OIDC_STATE_KEY), &cache_key);
1253 if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->url_param_map,
1254 &cache_key))
1255 {
1256 handle->oidc->state = GNUNET_CONTAINER_multihashmap_get(handle->rest_handle->url_param_map,
1257 &cache_key);
1258 handle->oidc->state = GNUNET_strdup (handle->oidc->state);
1259 }
1260
1261 // REQUIRED value: client_id
1262 GNUNET_CRYPTO_hash (OIDC_CLIENT_ID_KEY, strlen (OIDC_CLIENT_ID_KEY),
1263 &cache_key);
1264 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->url_param_map,
1265 &cache_key))
1266 {
1267 handle->emsg=GNUNET_strdup("invalid_request");
1268 handle->edesc=GNUNET_strdup("missing parameter client_id");
1269 handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
1270 GNUNET_SCHEDULER_add_now (&do_error, handle);
1271 return;
1272 }
1273 handle->oidc->client_id = GNUNET_strdup (GNUNET_CONTAINER_multihashmap_get(handle->rest_handle->url_param_map,
1274 &cache_key));
1275
1276 if ( GNUNET_OK
1277 != GNUNET_CRYPTO_ecdsa_public_key_from_string (handle->oidc->client_id,
1278 strlen (handle->oidc->client_id),
1279 &handle->oidc->client_pkey) )
1280 {
1281 handle->emsg = GNUNET_strdup("unauthorized_client");
1282 handle->edesc = GNUNET_strdup("The client is not authorized to request an "
1283 "authorization code using this method.");
1284 handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
1285 GNUNET_SCHEDULER_add_now (&do_error, handle);
1286 return;
1287 }
1288
1289
1290 if ( NULL == handle->ego_head )
1291 {
1292 handle->emsg = GNUNET_strdup("server_error");
1293 handle->edesc = GNUNET_strdup ("Egos are missing");
1294 handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
1295 GNUNET_SCHEDULER_add_now (&do_error, handle);
1296 return;
1297 }
1298
1299 handle->ego_entry = handle->ego_head;
1300 handle->priv_key = *GNUNET_IDENTITY_ego_get_private_key (handle->ego_head->ego);
1301 //If we know this identity, translated the corresponding TLD
1302 //TODO: We might want to have a reverse lookup functionality for TLDs?
1303 for (tmp_ego = handle->ego_head; NULL != tmp_ego; tmp_ego = tmp_ego->next)
1304 {
1305 priv_key = GNUNET_IDENTITY_ego_get_private_key (tmp_ego->ego);
1306 GNUNET_CRYPTO_ecdsa_key_get_public (priv_key,
1307 &pkey);
1308 if ( 0 == memcmp (&pkey, &handle->oidc->client_pkey,
1309 sizeof(struct GNUNET_CRYPTO_EcdsaPublicKey)) )
1310 {
1311 handle->tld = GNUNET_strdup (tmp_ego->identifier);
1312 handle->ego_entry = handle->ego_tail;
1313 }
1314 }
1315 GNUNET_SCHEDULER_add_now (&build_authz_response, handle);
1316}
1317
1318/**
1319 * Combines an identity with a login time and responds OK to login request
1320 *
1321 * @param con_handle the connection handle
1322 * @param url the url
1323 * @param cls the RequestHandle
1324 */
1325static void
1326login_cont (struct GNUNET_REST_RequestHandle *con_handle,
1327 const char* url,
1328 void *cls)
1329{
1330 struct MHD_Response *resp = GNUNET_REST_create_response ("");
1331 struct RequestHandle *handle = cls;
1332 struct GNUNET_HashCode cache_key;
1333 struct GNUNET_TIME_Absolute *current_time;
1334 struct GNUNET_TIME_Absolute *last_time;
1335 char* cookie;
1336 json_t *root;
1337 json_error_t error;
1338 json_t *identity;
1339 char term_data[handle->rest_handle->data_size+1];
1340 term_data[handle->rest_handle->data_size] = '\0';
1341 GNUNET_memcpy (term_data, handle->rest_handle->data, handle->rest_handle->data_size);
1342 root = json_loads (term_data, JSON_DECODE_ANY, &error);
1343 identity = json_object_get (root, "identity");
1344 if ( json_is_string(identity) )
1345 {
1346 GNUNET_asprintf (&cookie, "Identity=%s", json_string_value (identity));
1347 MHD_add_response_header (resp, "Set-Cookie", cookie);
1348 MHD_add_response_header (resp, "Access-Control-Allow-Methods", "POST");
1349 GNUNET_CRYPTO_hash (cookie, strlen (cookie), &cache_key);
1350
1351 current_time = GNUNET_new(struct GNUNET_TIME_Absolute);
1352 *current_time = GNUNET_TIME_relative_to_absolute (
1353 GNUNET_TIME_relative_multiply (GNUNET_TIME_relative_get_second_ (),
1354 5));
1355 last_time = GNUNET_CONTAINER_multihashmap_get(OIDC_identity_login_time, &cache_key);
1356 if (NULL != last_time)
1357 {
1358 GNUNET_free(last_time);
1359 }
1360 GNUNET_CONTAINER_multihashmap_put (
1361 OIDC_identity_login_time, &cache_key, current_time,
1362 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
1363
1364 handle->proc (handle->proc_cls, resp, MHD_HTTP_OK);
1365 GNUNET_free(cookie);
1366 }
1367 else
1368 {
1369 handle->proc (handle->proc_cls, resp, MHD_HTTP_BAD_REQUEST);
1370 }
1371 json_decref (root);
1372 GNUNET_SCHEDULER_add_now (&cleanup_handle_delayed, handle);
1373 return;
1374}
1375
1376static int
1377check_authorization (struct RequestHandle *handle,
1378 struct GNUNET_CRYPTO_EcdsaPublicKey *cid)
1379{
1380 struct GNUNET_HashCode cache_key;
1381 char *authorization;
1382 char *credentials;
1383 char *basic_authorization;
1384 char *client_id;
1385 char *pass;
1386 char *expected_pass;
1387 int client_exists = GNUNET_NO;
1388
1389 GNUNET_CRYPTO_hash (OIDC_AUTHORIZATION_HEADER_KEY,
1390 strlen (OIDC_AUTHORIZATION_HEADER_KEY),
1391 &cache_key);
1392 if ( GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->header_param_map,
1393 &cache_key) )
1394 {
1395 handle->emsg=GNUNET_strdup("invalid_client");
1396 handle->edesc=GNUNET_strdup("missing authorization");
1397 handle->response_code = MHD_HTTP_UNAUTHORIZED;
1398 return GNUNET_SYSERR;
1399 }
1400 authorization = GNUNET_CONTAINER_multihashmap_get (handle->rest_handle->header_param_map,
1401 &cache_key);
1402
1403 //split header in "Basic" and [content]
1404 credentials = strtok (authorization, " ");
1405 if (0 != strcmp ("Basic", credentials))
1406 {
1407 handle->emsg=GNUNET_strdup("invalid_client");
1408 handle->response_code = MHD_HTTP_UNAUTHORIZED;
1409 return GNUNET_SYSERR;
1410 }
1411 credentials = strtok(NULL, " ");
1412 if (NULL == credentials)
1413 {
1414 handle->emsg=GNUNET_strdup("invalid_client");
1415 handle->response_code = MHD_HTTP_UNAUTHORIZED;
1416 return GNUNET_SYSERR;
1417 }
1418 GNUNET_STRINGS_base64_decode (credentials,
1419 strlen (credentials),
1420 (void**)&basic_authorization);
1421
1422 if ( NULL == basic_authorization )
1423 {
1424 handle->emsg=GNUNET_strdup("invalid_client");
1425 handle->response_code = MHD_HTTP_UNAUTHORIZED;
1426 return GNUNET_SYSERR;
1427 }
1428 client_id = strtok (basic_authorization, ":");
1429 if ( NULL == client_id )
1430 {
1431 GNUNET_free_non_null(basic_authorization);
1432 handle->emsg=GNUNET_strdup("invalid_client");
1433 handle->response_code = MHD_HTTP_UNAUTHORIZED;
1434 return GNUNET_SYSERR;
1435 }
1436 pass = strtok (NULL, ":");
1437 if (NULL == pass)
1438 {
1439 GNUNET_free_non_null(basic_authorization);
1440 handle->emsg=GNUNET_strdup("invalid_client");
1441 handle->response_code = MHD_HTTP_UNAUTHORIZED;
1442 return GNUNET_SYSERR;
1443 }
1444
1445 //check client password
1446 if ( GNUNET_OK
1447 == GNUNET_CONFIGURATION_get_value_string (cfg, "reclaim-rest-plugin",
1448 "psw", &expected_pass) )
1449 {
1450 if (0 != strcmp (expected_pass, pass))
1451 {
1452 GNUNET_free_non_null(basic_authorization);
1453 GNUNET_free(expected_pass);
1454 handle->emsg=GNUNET_strdup("invalid_client");
1455 handle->response_code = MHD_HTTP_UNAUTHORIZED;
1456 return GNUNET_SYSERR;
1457 }
1458 GNUNET_free(expected_pass);
1459 }
1460 else
1461 {
1462 GNUNET_free_non_null(basic_authorization);
1463 handle->emsg = GNUNET_strdup("server_error");
1464 handle->edesc = GNUNET_strdup ("gnunet configuration failed");
1465 handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
1466 return GNUNET_SYSERR;
1467 }
1468
1469 //check client_id
1470 for (handle->ego_entry = handle->ego_head; NULL != handle->ego_entry->next; )
1471 {
1472 if ( 0 == strcmp(handle->ego_entry->keystring, client_id))
1473 {
1474 client_exists = GNUNET_YES;
1475 break;
1476 }
1477 handle->ego_entry = handle->ego_entry->next;
1478 }
1479 if (GNUNET_NO == client_exists)
1480 {
1481 GNUNET_free_non_null(basic_authorization);
1482 handle->emsg=GNUNET_strdup("invalid_client");
1483 handle->response_code = MHD_HTTP_UNAUTHORIZED;
1484 return GNUNET_SYSERR;
1485 }
1486 GNUNET_STRINGS_string_to_data (client_id,
1487 strlen(client_id),
1488 cid,
1489 sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey));
1490
1491 GNUNET_free (basic_authorization);
1492 return GNUNET_OK;
1493}
1494
1495static int
1496ego_exists (struct RequestHandle *handle,
1497 struct GNUNET_CRYPTO_EcdsaPublicKey *test_key)
1498{
1499 struct EgoEntry *ego_entry;
1500 struct GNUNET_CRYPTO_EcdsaPublicKey pub_key;
1501
1502 for (ego_entry = handle->ego_head; NULL != ego_entry; ego_entry = ego_entry->next)
1503 {
1504 GNUNET_IDENTITY_ego_get_public_key (ego_entry->ego, &pub_key);
1505 if (0 == memcmp (&pub_key,
1506 test_key,
1507 sizeof(struct GNUNET_CRYPTO_EcdsaPublicKey)))
1508 {
1509 break;
1510 }
1511 }
1512 if (NULL == ego_entry)
1513 return GNUNET_NO;
1514 return GNUNET_YES;
1515}
1516
1517static void
1518store_ticket_reference (const struct RequestHandle *handle,
1519 const char* access_token,
1520 const struct GNUNET_RECLAIM_Ticket *ticket,
1521 const struct GNUNET_CRYPTO_EcdsaPublicKey *cid)
1522{
1523 struct GNUNET_HashCode cache_key;
1524 char *id_ticket_combination;
1525 char *ticket_string;
1526 char *client_id;
1527
1528 GNUNET_CRYPTO_hash(access_token, strlen(access_token), &cache_key);
1529 client_id = GNUNET_STRINGS_data_to_string_alloc (cid,
1530 sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey));
1531 ticket_string = GNUNET_STRINGS_data_to_string_alloc (ticket,
1532 sizeof (struct GNUNET_RECLAIM_Ticket));
1533 GNUNET_asprintf(&id_ticket_combination,
1534 "%s;%s",
1535 client_id,
1536 ticket_string);
1537 GNUNET_CONTAINER_multihashmap_put(OIDC_interpret_access_token,
1538 &cache_key,
1539 id_ticket_combination,
1540 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
1541
1542 GNUNET_free (client_id);
1543 GNUNET_free (ticket_string);
1544}
1545
1546/**
1547 * Responds to token url-encoded POST request
1548 *
1549 * @param con_handle the connection handle
1550 * @param url the url
1551 * @param cls the RequestHandle
1552 */
1553static void
1554token_endpoint (struct GNUNET_REST_RequestHandle *con_handle,
1555 const char* url,
1556 void *cls)
1557{
1558 struct RequestHandle *handle = cls;
1559 struct GNUNET_TIME_Relative expiration_time;
1560 struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList *cl;
1561 struct GNUNET_RECLAIM_Ticket *ticket;
1562 struct GNUNET_CRYPTO_EcdsaPublicKey cid;
1563 struct GNUNET_HashCode cache_key;
1564 struct MHD_Response *resp;
1565 char *grant_type;
1566 char *code;
1567 char *json_response;
1568 char *id_token;
1569 char *access_token;
1570 char *jwt_secret;
1571 char *nonce;
1572 int i = 1;
1573
1574 /*
1575 * Check Authorization
1576 */
1577 if (GNUNET_SYSERR == check_authorization (handle,
1578 &cid))
1579 {
1580 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1581 "OIDC authorization for token endpoint failed\n");
1582 GNUNET_SCHEDULER_add_now (&do_error, handle);
1583 return;
1584 }
1585
1586 /*
1587 * Check parameter
1588 */
1589
1590 //TODO Do not allow multiple equal parameter names
1591 //REQUIRED grant_type
1592 GNUNET_CRYPTO_hash (OIDC_GRANT_TYPE_KEY, strlen (OIDC_GRANT_TYPE_KEY), &cache_key);
1593 if (GNUNET_NO ==
1594 GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->url_param_map,
1595 &cache_key))
1596 {
1597 handle->emsg = GNUNET_strdup("invalid_request");
1598 handle->edesc = GNUNET_strdup("missing parameter grant_type");
1599 handle->response_code = MHD_HTTP_BAD_REQUEST;
1600 GNUNET_SCHEDULER_add_now (&do_error, handle);
1601 return;
1602 }
1603 grant_type = GNUNET_CONTAINER_multihashmap_get (handle->rest_handle->url_param_map,
1604 &cache_key);
1605
1606 //REQUIRED code
1607 GNUNET_CRYPTO_hash (OIDC_CODE_KEY, strlen (OIDC_CODE_KEY), &cache_key);
1608 if (GNUNET_NO ==
1609 GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->url_param_map,
1610 &cache_key))
1611 {
1612 handle->emsg = GNUNET_strdup("invalid_request");
1613 handle->edesc = GNUNET_strdup("missing parameter code");
1614 handle->response_code = MHD_HTTP_BAD_REQUEST;
1615 GNUNET_SCHEDULER_add_now (&do_error, handle);
1616 return;
1617 }
1618 code = GNUNET_CONTAINER_multihashmap_get (handle->rest_handle->url_param_map,
1619 &cache_key);
1620
1621 //REQUIRED redirect_uri
1622 GNUNET_CRYPTO_hash (OIDC_REDIRECT_URI_KEY, strlen (OIDC_REDIRECT_URI_KEY),
1623 &cache_key);
1624 if (GNUNET_NO ==
1625 GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->url_param_map,
1626 &cache_key) )
1627 {
1628 handle->emsg = GNUNET_strdup("invalid_request");
1629 handle->edesc = GNUNET_strdup("missing parameter redirect_uri");
1630 handle->response_code = MHD_HTTP_BAD_REQUEST;
1631 GNUNET_SCHEDULER_add_now (&do_error, handle);
1632 return;
1633 }
1634
1635 //Check parameter grant_type == "authorization_code"
1636 if (0 != strcmp(OIDC_GRANT_TYPE_VALUE, grant_type))
1637 {
1638 handle->emsg=GNUNET_strdup("unsupported_grant_type");
1639 handle->response_code = MHD_HTTP_BAD_REQUEST;
1640 GNUNET_SCHEDULER_add_now (&do_error, handle);
1641 return;
1642 }
1643 GNUNET_CRYPTO_hash (code, strlen (code), &cache_key);
1644 if (GNUNET_SYSERR ==
1645 GNUNET_CONTAINER_multihashmap_put (OIDC_ticket_once,
1646 &cache_key,
1647 &i,
1648 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY) )
1649 {
1650 handle->emsg = GNUNET_strdup("invalid_request");
1651 handle->edesc = GNUNET_strdup("Cannot use the same code more than once");
1652 handle->response_code = MHD_HTTP_BAD_REQUEST;
1653 GNUNET_SCHEDULER_add_now (&do_error, handle);
1654 return;
1655 }
1656
1657 //decode code
1658 if(GNUNET_OK != OIDC_parse_authz_code (&cid,
1659 code,
1660 &ticket,
1661 &nonce))
1662 {
1663 handle->emsg = GNUNET_strdup("invalid_request");
1664 handle->edesc = GNUNET_strdup("invalid code");
1665 handle->response_code = MHD_HTTP_BAD_REQUEST;
1666 GNUNET_SCHEDULER_add_now (&do_error, handle);
1667 return;
1668 }
1669
1670 //create jwt
1671 if (GNUNET_OK !=
1672 GNUNET_CONFIGURATION_get_value_time(cfg,
1673 "reclaim-rest-plugin",
1674 "expiration_time",
1675 &expiration_time))
1676 {
1677 handle->emsg = GNUNET_strdup("server_error");
1678 handle->edesc = GNUNET_strdup ("gnunet configuration failed");
1679 handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
1680 GNUNET_SCHEDULER_add_now (&do_error, handle);
1681 GNUNET_free(ticket);
1682 return;
1683 }
1684
1685
1686 //TODO OPTIONAL acr,amr,azp
1687 if (GNUNET_NO == ego_exists (handle,
1688 &ticket->audience))
1689 {
1690 handle->emsg = GNUNET_strdup("invalid_request");
1691 handle->edesc = GNUNET_strdup("invalid code...");
1692 handle->response_code = MHD_HTTP_BAD_REQUEST;
1693 GNUNET_SCHEDULER_add_now (&do_error, handle);
1694 GNUNET_free(ticket);
1695 }
1696 if ( GNUNET_OK
1697 != GNUNET_CONFIGURATION_get_value_string (cfg, "reclaim-rest-plugin",
1698 "jwt_secret", &jwt_secret) )
1699 {
1700 handle->emsg = GNUNET_strdup("invalid_request");
1701 handle->edesc = GNUNET_strdup("No signing secret configured!");
1702 handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
1703 GNUNET_SCHEDULER_add_now (&do_error, handle);
1704 GNUNET_free(ticket);
1705 return;
1706 }
1707 //TODO We should collect the attributes here. cl always empty
1708 cl = GNUNET_new (struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList);
1709 id_token = OIDC_id_token_new (&ticket->audience,
1710 &ticket->identity,
1711 cl,
1712 &expiration_time,
1713 (NULL != nonce) ? nonce : NULL,
1714 jwt_secret);
1715 access_token = OIDC_access_token_new ();
1716 OIDC_build_token_response (access_token,
1717 id_token,
1718 &expiration_time,
1719 &json_response);
1720
1721 store_ticket_reference (handle,
1722 access_token,
1723 ticket,
1724 &cid);
1725 resp = GNUNET_REST_create_response (json_response);
1726 MHD_add_response_header (resp, "Cache-Control", "no-store");
1727 MHD_add_response_header (resp, "Pragma", "no-cache");
1728 MHD_add_response_header (resp, "Content-Type", "application/json");
1729 handle->proc (handle->proc_cls, resp, MHD_HTTP_OK);
1730 GNUNET_RECLAIM_ATTRIBUTE_list_destroy(cl);
1731 GNUNET_free(access_token);
1732 GNUNET_free(json_response);
1733 GNUNET_free(ticket);
1734 GNUNET_free(id_token);
1735 GNUNET_SCHEDULER_add_now(&cleanup_handle_delayed, handle);
1736}
1737
1738/**
1739 * Collects claims and stores them in handle
1740 */
1741static void
1742consume_ticket (void *cls,
1743 const struct GNUNET_CRYPTO_EcdsaPublicKey *identity,
1744 const struct GNUNET_RECLAIM_ATTRIBUTE_Claim *attr)
1745{
1746 struct RequestHandle *handle = cls;
1747 char *tmp_value;
1748 json_t *value;
1749
1750 if (NULL == identity)
1751 {
1752 GNUNET_SCHEDULER_add_now (&return_userinfo_response, handle);
1753 return;
1754 }
1755
1756 tmp_value = GNUNET_RECLAIM_ATTRIBUTE_value_to_string (attr->type,
1757 attr->data,
1758 attr->data_size);
1759
1760 value = json_string (tmp_value);
1761
1762
1763 json_object_set_new (handle->oidc->response,
1764 attr->name,
1765 value);
1766 GNUNET_free (tmp_value);
1767}
1768
1769/**
1770 * Responds to userinfo GET and url-encoded POST request
1771 *
1772 * @param con_handle the connection handle
1773 * @param url the url
1774 * @param cls the RequestHandle
1775 */
1776static void
1777userinfo_endpoint (struct GNUNET_REST_RequestHandle *con_handle,
1778 const char* url, void *cls)
1779{
1780 //TODO expiration time
1781 struct RequestHandle *handle = cls;
1782 char delimiter[] = " ";
1783 char delimiter_db[] = ";";
1784 struct GNUNET_HashCode cache_key;
1785 char *authorization, *authorization_type, *authorization_access_token;
1786 char *client_ticket, *client, *ticket_str;
1787 struct GNUNET_RECLAIM_Ticket *ticket;
1788
1789 GNUNET_CRYPTO_hash (OIDC_AUTHORIZATION_HEADER_KEY,
1790 strlen (OIDC_AUTHORIZATION_HEADER_KEY),
1791 &cache_key);
1792 if ( GNUNET_NO
1793 == GNUNET_CONTAINER_multihashmap_contains (
1794 handle->rest_handle->header_param_map, &cache_key) )
1795 {
1796 handle->emsg = GNUNET_strdup("invalid_token");
1797 handle->edesc = GNUNET_strdup("No Access Token");
1798 handle->response_code = MHD_HTTP_UNAUTHORIZED;
1799 GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle);
1800 return;
1801 }
1802 authorization = GNUNET_CONTAINER_multihashmap_get (
1803 handle->rest_handle->header_param_map, &cache_key);
1804
1805 //split header in "Bearer" and access_token
1806 authorization = GNUNET_strdup(authorization);
1807 authorization_type = strtok (authorization, delimiter);
1808 if ( 0 != strcmp ("Bearer", authorization_type) )
1809 {
1810 handle->emsg = GNUNET_strdup("invalid_token");
1811 handle->edesc = GNUNET_strdup("No Access Token");
1812 handle->response_code = MHD_HTTP_UNAUTHORIZED;
1813 GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle);
1814 GNUNET_free(authorization);
1815 return;
1816 }
1817 authorization_access_token = strtok (NULL, delimiter);
1818 if ( NULL == authorization_access_token )
1819 {
1820 handle->emsg = GNUNET_strdup("invalid_token");
1821 handle->edesc = GNUNET_strdup("No Access Token");
1822 handle->response_code = MHD_HTTP_UNAUTHORIZED;
1823 GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle);
1824 GNUNET_free(authorization);
1825 return;
1826 }
1827
1828 GNUNET_CRYPTO_hash (authorization_access_token,
1829 strlen (authorization_access_token),
1830 &cache_key);
1831 if ( GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (OIDC_interpret_access_token,
1832 &cache_key) )
1833 {
1834 handle->emsg = GNUNET_strdup("invalid_token");
1835 handle->edesc = GNUNET_strdup("The Access Token expired");
1836 handle->response_code = MHD_HTTP_UNAUTHORIZED;
1837 GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle);
1838 GNUNET_free(authorization);
1839 return;
1840 }
1841
1842 client_ticket = GNUNET_CONTAINER_multihashmap_get(OIDC_interpret_access_token,
1843 &cache_key);
1844 client_ticket = GNUNET_strdup(client_ticket);
1845 client = strtok(client_ticket,delimiter_db);
1846 if (NULL == client)
1847 {
1848 handle->emsg = GNUNET_strdup("invalid_token");
1849 handle->edesc = GNUNET_strdup("The Access Token expired");
1850 handle->response_code = MHD_HTTP_UNAUTHORIZED;
1851 GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle);
1852 GNUNET_free(authorization);
1853 GNUNET_free(client_ticket);
1854 return;
1855 }
1856 handle->ego_entry = handle->ego_head;
1857 for(; NULL != handle->ego_entry; handle->ego_entry = handle->ego_entry->next)
1858 {
1859 if (0 == strcmp(handle->ego_entry->keystring,client))
1860 {
1861 break;
1862 }
1863 }
1864 if (NULL == handle->ego_entry)
1865 {
1866 handle->emsg = GNUNET_strdup("invalid_token");
1867 handle->edesc = GNUNET_strdup("The Access Token expired");
1868 handle->response_code = MHD_HTTP_UNAUTHORIZED;
1869 GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle);
1870 GNUNET_free(authorization);
1871 GNUNET_free(client_ticket);
1872 return;
1873 }
1874 ticket_str = strtok(NULL, delimiter_db);
1875 if (NULL == ticket_str)
1876 {
1877 handle->emsg = GNUNET_strdup("invalid_token");
1878 handle->edesc = GNUNET_strdup("The Access Token expired");
1879 handle->response_code = MHD_HTTP_UNAUTHORIZED;
1880 GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle);
1881 GNUNET_free(authorization);
1882 GNUNET_free(client_ticket);
1883 return;
1884 }
1885 ticket = GNUNET_new(struct GNUNET_RECLAIM_Ticket);
1886 if ( GNUNET_OK
1887 != GNUNET_STRINGS_string_to_data (ticket_str,
1888 strlen (ticket_str),
1889 ticket,
1890 sizeof(struct GNUNET_RECLAIM_Ticket)))
1891 {
1892 handle->emsg = GNUNET_strdup("invalid_token");
1893 handle->edesc = GNUNET_strdup("The Access Token expired");
1894 handle->response_code = MHD_HTTP_UNAUTHORIZED;
1895 GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle);
1896 GNUNET_free(ticket);
1897 GNUNET_free(authorization);
1898 GNUNET_free(client_ticket);
1899 return;
1900 }
1901
1902 handle->idp = GNUNET_RECLAIM_connect (cfg);
1903 handle->oidc->response = json_object();
1904 json_object_set_new( handle->oidc->response, "sub", json_string( handle->ego_entry->keystring));
1905 handle->idp_op = GNUNET_RECLAIM_ticket_consume (
1906 handle->idp,
1907 GNUNET_IDENTITY_ego_get_private_key (handle->ego_entry->ego),
1908 ticket,
1909 consume_ticket,
1910 handle);
1911 GNUNET_free(ticket);
1912 GNUNET_free(authorization);
1913 GNUNET_free(client_ticket);
1914
1915}
1916
1917
1918/**
1919 * Handle rest request
1920 *
1921 * @param handle the request handle
1922 */
1923static void
1924init_cont (struct RequestHandle *handle)
1925{
1926 struct GNUNET_REST_RequestHandlerError err;
1927 static const struct GNUNET_REST_RequestHandler handlers[] = {
1928 {MHD_HTTP_METHOD_GET, GNUNET_REST_API_NS_AUTHORIZE, &authorize_endpoint},
1929 {MHD_HTTP_METHOD_POST, GNUNET_REST_API_NS_AUTHORIZE, &authorize_endpoint}, //url-encoded
1930 {MHD_HTTP_METHOD_POST, GNUNET_REST_API_NS_LOGIN, &login_cont},
1931 {MHD_HTTP_METHOD_POST, GNUNET_REST_API_NS_TOKEN, &token_endpoint },
1932 {MHD_HTTP_METHOD_GET, GNUNET_REST_API_NS_USERINFO, &userinfo_endpoint },
1933 {MHD_HTTP_METHOD_POST, GNUNET_REST_API_NS_USERINFO, &userinfo_endpoint },
1934 {MHD_HTTP_METHOD_OPTIONS, GNUNET_REST_API_NS_OIDC,
1935 &options_cont},
1936 GNUNET_REST_HANDLER_END
1937 };
1938
1939 if (GNUNET_NO == GNUNET_REST_handle_request (handle->rest_handle,
1940 handlers,
1941 &err,
1942 handle))
1943 {
1944 handle->response_code = err.error_code;
1945 GNUNET_SCHEDULER_add_now (&do_error, handle);
1946 }
1947}
1948
1949/**
1950 * If listing is enabled, prints information about the egos.
1951 *
1952 * This function is initially called for all egos and then again
1953 * whenever a ego's identifier changes or if it is deleted. At the
1954 * end of the initial pass over all egos, the function is once called
1955 * with 'NULL' for 'ego'. That does NOT mean that the callback won't
1956 * be invoked in the future or that there was an error.
1957 *
1958 * When used with 'GNUNET_IDENTITY_create' or 'GNUNET_IDENTITY_get',
1959 * this function is only called ONCE, and 'NULL' being passed in
1960 * 'ego' does indicate an error (i.e. name is taken or no default
1961 * value is known). If 'ego' is non-NULL and if '*ctx'
1962 * is set in those callbacks, the value WILL be passed to a subsequent
1963 * call to the identity callback of 'GNUNET_IDENTITY_connect' (if
1964 * that one was not NULL).
1965 *
1966 * When an identity is renamed, this function is called with the
1967 * (known) ego but the NEW identifier.
1968 *
1969 * When an identity is deleted, this function is called with the
1970 * (known) ego and "NULL" for the 'identifier'. In this case,
1971 * the 'ego' is henceforth invalid (and the 'ctx' should also be
1972 * cleaned up).
1973 *
1974 * @param cls closure
1975 * @param ego ego handle
1976 * @param ctx context for application to store data for this ego
1977 * (during the lifetime of this process, initially NULL)
1978 * @param identifier identifier assigned by the user for this ego,
1979 * NULL if the user just deleted the ego and it
1980 * must thus no longer be used
1981 */
1982static void
1983list_ego (void *cls,
1984 struct GNUNET_IDENTITY_Ego *ego,
1985 void **ctx,
1986 const char *identifier)
1987{
1988 struct RequestHandle *handle = cls;
1989 struct EgoEntry *ego_entry;
1990 struct GNUNET_CRYPTO_EcdsaPublicKey pk;
1991
1992 if ((NULL == ego) && (ID_REST_STATE_INIT == handle->state))
1993 {
1994 handle->state = ID_REST_STATE_POST_INIT;
1995 init_cont (handle);
1996 return;
1997 }
1998 if (ID_REST_STATE_INIT == handle->state) {
1999 ego_entry = GNUNET_new (struct EgoEntry);
2000 GNUNET_IDENTITY_ego_get_public_key (ego, &pk);
2001 ego_entry->keystring =
2002 GNUNET_CRYPTO_ecdsa_public_key_to_string (&pk);
2003 ego_entry->ego = ego;
2004 ego_entry->identifier = GNUNET_strdup (identifier);
2005 GNUNET_CONTAINER_DLL_insert_tail(handle->ego_head,handle->ego_tail, ego_entry);
2006 return;
2007 }
2008 /* Ego renamed or added */
2009 if (identifier != NULL) {
2010 for (ego_entry = handle->ego_head; NULL != ego_entry; ego_entry = ego_entry->next) {
2011 if (ego_entry->ego == ego) {
2012 /* Rename */
2013 GNUNET_free (ego_entry->identifier);
2014 ego_entry->identifier = GNUNET_strdup (identifier);
2015 break;
2016 }
2017 }
2018 if (NULL == ego_entry) {
2019 /* Add */
2020 ego_entry = GNUNET_new (struct EgoEntry);
2021 GNUNET_IDENTITY_ego_get_public_key (ego, &pk);
2022 ego_entry->keystring =
2023 GNUNET_CRYPTO_ecdsa_public_key_to_string (&pk);
2024 ego_entry->ego = ego;
2025 ego_entry->identifier = GNUNET_strdup (identifier);
2026 GNUNET_CONTAINER_DLL_insert_tail(handle->ego_head,handle->ego_tail, ego_entry);
2027 }
2028 } else {
2029 /* Delete */
2030 for (ego_entry = handle->ego_head; NULL != ego_entry; ego_entry = ego_entry->next) {
2031 if (ego_entry->ego == ego)
2032 break;
2033 }
2034 if (NULL != ego_entry)
2035 GNUNET_CONTAINER_DLL_remove(handle->ego_head,handle->ego_tail, ego_entry);
2036 }
2037
2038}
2039
2040static void
2041rest_identity_process_request(struct GNUNET_REST_RequestHandle *rest_handle,
2042 GNUNET_REST_ResultProcessor proc,
2043 void *proc_cls)
2044{
2045 struct RequestHandle *handle = GNUNET_new (struct RequestHandle);
2046 handle->oidc = GNUNET_new (struct OIDC_Variables);
2047 if ( NULL == OIDC_identity_login_time )
2048 OIDC_identity_login_time = GNUNET_CONTAINER_multihashmap_create (10, GNUNET_NO);
2049 if ( NULL == OIDC_identity_grants )
2050 OIDC_identity_grants = GNUNET_CONTAINER_multihashmap_create (10, GNUNET_NO);
2051 if ( NULL == OIDC_ticket_once )
2052 OIDC_ticket_once = GNUNET_CONTAINER_multihashmap_create (10, GNUNET_NO);
2053 if ( NULL == OIDC_interpret_access_token )
2054 OIDC_interpret_access_token = GNUNET_CONTAINER_multihashmap_create (10, GNUNET_NO);
2055 handle->response_code = 0;
2056 handle->timeout = GNUNET_TIME_UNIT_FOREVER_REL;
2057 handle->proc_cls = proc_cls;
2058 handle->proc = proc;
2059 handle->state = ID_REST_STATE_INIT;
2060 handle->rest_handle = rest_handle;
2061
2062 handle->url = GNUNET_strdup (rest_handle->url);
2063 if (handle->url[strlen (handle->url)-1] == '/')
2064 handle->url[strlen (handle->url)-1] = '\0';
2065 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2066 "Connecting...\n");
2067 handle->identity_handle = GNUNET_IDENTITY_connect (cfg,
2068 &list_ego,
2069 handle);
2070 handle->gns_handle = GNUNET_GNS_connect (cfg);
2071 handle->namestore_handle = GNUNET_NAMESTORE_connect (cfg);
2072 handle->timeout_task =
2073 GNUNET_SCHEDULER_add_delayed (handle->timeout,
2074 &do_timeout,
2075 handle);
2076 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2077 "Connected\n");
2078}
2079
2080/**
2081 * Entry point for the plugin.
2082 *
2083 * @param cls Config info
2084 * @return NULL on error, otherwise the plugin context
2085 */
2086void *
2087libgnunet_plugin_rest_openid_connect_init (void *cls)
2088{
2089 static struct Plugin plugin;
2090 struct GNUNET_REST_Plugin *api;
2091
2092 cfg = cls;
2093 if (NULL != plugin.cfg)
2094 return NULL; /* can only initialize once! */
2095 memset (&plugin, 0, sizeof (struct Plugin));
2096 plugin.cfg = cfg;
2097 api = GNUNET_new (struct GNUNET_REST_Plugin);
2098 api->cls = &plugin;
2099 api->name = GNUNET_REST_API_NS_OIDC;
2100 api->process_request = &rest_identity_process_request;
2101 GNUNET_asprintf (&allow_methods,
2102 "%s, %s, %s, %s, %s",
2103 MHD_HTTP_METHOD_GET,
2104 MHD_HTTP_METHOD_POST,
2105 MHD_HTTP_METHOD_PUT,
2106 MHD_HTTP_METHOD_DELETE,
2107 MHD_HTTP_METHOD_OPTIONS);
2108
2109 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2110 _("Identity Provider REST API initialized\n"));
2111 return api;
2112}
2113
2114
2115/**
2116 * Exit point from the plugin.
2117 *
2118 * @param cls the plugin context (as returned by "init")
2119 * @return always NULL
2120 */
2121void *
2122libgnunet_plugin_rest_openid_connect_done (void *cls)
2123{
2124 struct GNUNET_REST_Plugin *api = cls;
2125 struct Plugin *plugin = api->cls;
2126 plugin->cfg = NULL;
2127
2128 struct GNUNET_CONTAINER_MultiHashMapIterator *hashmap_it;
2129 void *value = NULL;
2130 hashmap_it = GNUNET_CONTAINER_multihashmap_iterator_create (
2131 OIDC_identity_login_time);
2132 while (GNUNET_YES ==
2133 GNUNET_CONTAINER_multihashmap_iterator_next (hashmap_it, NULL, value))
2134 {
2135 if (NULL != value)
2136 GNUNET_free(value);
2137 }
2138 GNUNET_CONTAINER_multihashmap_destroy(OIDC_identity_login_time);
2139 hashmap_it = GNUNET_CONTAINER_multihashmap_iterator_create (OIDC_identity_grants);
2140 while (GNUNET_YES ==
2141 GNUNET_CONTAINER_multihashmap_iterator_next (hashmap_it, NULL, value))
2142 {
2143 if (NULL != value)
2144 GNUNET_free(value);
2145 }
2146 GNUNET_CONTAINER_multihashmap_destroy(OIDC_identity_grants);
2147 hashmap_it = GNUNET_CONTAINER_multihashmap_iterator_create (OIDC_ticket_once);
2148 while (GNUNET_YES ==
2149 GNUNET_CONTAINER_multihashmap_iterator_next (hashmap_it, NULL, value))
2150 {
2151 if (NULL != value)
2152 GNUNET_free(value);
2153 }
2154 GNUNET_CONTAINER_multihashmap_destroy(OIDC_ticket_once);
2155 hashmap_it = GNUNET_CONTAINER_multihashmap_iterator_create (OIDC_interpret_access_token);
2156 while (GNUNET_YES ==
2157 GNUNET_CONTAINER_multihashmap_iterator_next (hashmap_it, NULL, value))
2158 {
2159 if (NULL != value)
2160 GNUNET_free(value);
2161 }
2162 GNUNET_CONTAINER_multihashmap_destroy(OIDC_interpret_access_token);
2163 GNUNET_CONTAINER_multihashmap_iterator_destroy(hashmap_it);
2164 GNUNET_free_non_null (allow_methods);
2165 GNUNET_free (api);
2166 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2167 "Identity Provider REST plugin is finished\n");
2168 return NULL;
2169}
2170
2171/* end of plugin_rest_identity_provider.c */