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Diffstat (limited to 'src/reclaim/plugin_rest_openid_connect.c')
-rw-r--r-- | src/reclaim/plugin_rest_openid_connect.c | 2860 |
1 files changed, 0 insertions, 2860 deletions
diff --git a/src/reclaim/plugin_rest_openid_connect.c b/src/reclaim/plugin_rest_openid_connect.c deleted file mode 100644 index 1c00abcbd..000000000 --- a/src/reclaim/plugin_rest_openid_connect.c +++ /dev/null | |||
@@ -1,2860 +0,0 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | Copyright (C) 2012-2018 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 | SPDX-License-Identifier: AGPL3.0-or-later | ||
19 | */ | ||
20 | /** | ||
21 | * @author Martin Schanzenbach | ||
22 | * @author Philippe Buschmann | ||
23 | * @file identity/plugin_rest_openid_connect.c | ||
24 | * @brief GNUnet Namestore REST plugin | ||
25 | * | ||
26 | */ | ||
27 | #include "platform.h" | ||
28 | #include <inttypes.h> | ||
29 | #include <jansson.h> | ||
30 | |||
31 | #include "gnunet_buffer_lib.h" | ||
32 | #include "gnunet_strings_lib.h" | ||
33 | #include "gnunet_gns_service.h" | ||
34 | #include "gnunet_gnsrecord_lib.h" | ||
35 | #include "gnunet_identity_service.h" | ||
36 | #include "gnunet_namestore_service.h" | ||
37 | #include "gnunet_reclaim_lib.h" | ||
38 | #include "gnunet_reclaim_service.h" | ||
39 | #include "gnunet_rest_lib.h" | ||
40 | #include "gnunet_rest_plugin.h" | ||
41 | #include "gnunet_signatures.h" | ||
42 | #include "microhttpd.h" | ||
43 | #include "oidc_helper.h" | ||
44 | |||
45 | /** | ||
46 | * REST root namespace | ||
47 | */ | ||
48 | #define GNUNET_REST_API_NS_OIDC "/openid" | ||
49 | |||
50 | /** | ||
51 | * OIDC config | ||
52 | */ | ||
53 | #define GNUNET_REST_API_NS_OIDC_CONFIG "/.well-known/openid-configuration" | ||
54 | |||
55 | /** | ||
56 | * Authorize endpoint | ||
57 | */ | ||
58 | #define GNUNET_REST_API_NS_AUTHORIZE "/openid/authorize" | ||
59 | |||
60 | /** | ||
61 | * Token endpoint | ||
62 | */ | ||
63 | #define GNUNET_REST_API_NS_TOKEN "/openid/token" | ||
64 | |||
65 | /** | ||
66 | * UserInfo endpoint | ||
67 | */ | ||
68 | #define GNUNET_REST_API_NS_USERINFO "/openid/userinfo" | ||
69 | |||
70 | /** | ||
71 | * Login namespace | ||
72 | */ | ||
73 | #define GNUNET_REST_API_NS_LOGIN "/openid/login" | ||
74 | |||
75 | /** | ||
76 | * State while collecting all egos | ||
77 | */ | ||
78 | #define ID_REST_STATE_INIT 0 | ||
79 | |||
80 | /** | ||
81 | * Done collecting egos | ||
82 | */ | ||
83 | #define ID_REST_STATE_POST_INIT 1 | ||
84 | |||
85 | /** | ||
86 | * OIDC grant_type key | ||
87 | */ | ||
88 | #define OIDC_GRANT_TYPE_KEY "grant_type" | ||
89 | |||
90 | /** | ||
91 | * OIDC grant_type key | ||
92 | */ | ||
93 | #define OIDC_GRANT_TYPE_VALUE "authorization_code" | ||
94 | |||
95 | /** | ||
96 | * OIDC code key | ||
97 | */ | ||
98 | #define OIDC_CODE_KEY "code" | ||
99 | |||
100 | /** | ||
101 | * OIDC response_type key | ||
102 | */ | ||
103 | #define OIDC_RESPONSE_TYPE_KEY "response_type" | ||
104 | |||
105 | /** | ||
106 | * OIDC client_id key | ||
107 | */ | ||
108 | #define OIDC_CLIENT_ID_KEY "client_id" | ||
109 | |||
110 | /** | ||
111 | * OIDC scope key | ||
112 | */ | ||
113 | #define OIDC_SCOPE_KEY "scope" | ||
114 | |||
115 | /** | ||
116 | * OIDC redirect_uri key | ||
117 | */ | ||
118 | #define OIDC_REDIRECT_URI_KEY "redirect_uri" | ||
119 | |||
120 | /** | ||
121 | * OIDC state key | ||
122 | */ | ||
123 | #define OIDC_STATE_KEY "state" | ||
124 | |||
125 | /** | ||
126 | * OIDC nonce key | ||
127 | */ | ||
128 | #define OIDC_NONCE_KEY "nonce" | ||
129 | |||
130 | /** | ||
131 | * OIDC claims key | ||
132 | */ | ||
133 | #define OIDC_CLAIMS_KEY "claims" | ||
134 | |||
135 | /** | ||
136 | * OIDC PKCE code challenge | ||
137 | */ | ||
138 | #define OIDC_CODE_CHALLENGE_KEY "code_challenge" | ||
139 | |||
140 | /** | ||
141 | * OIDC PKCE code verifier | ||
142 | */ | ||
143 | #define OIDC_CODE_VERIFIER_KEY "code_verifier" | ||
144 | |||
145 | /** | ||
146 | * OIDC cookie expiration (in seconds) | ||
147 | */ | ||
148 | #define OIDC_COOKIE_EXPIRATION 3 | ||
149 | |||
150 | /** | ||
151 | * OIDC cookie header key | ||
152 | */ | ||
153 | #define OIDC_COOKIE_HEADER_KEY "cookie" | ||
154 | |||
155 | /** | ||
156 | * OIDC cookie header information key | ||
157 | */ | ||
158 | #define OIDC_AUTHORIZATION_HEADER_KEY "authorization" | ||
159 | |||
160 | /** | ||
161 | * OIDC cookie header information key | ||
162 | */ | ||
163 | #define OIDC_COOKIE_HEADER_INFORMATION_KEY "Identity=" | ||
164 | |||
165 | /** | ||
166 | * OIDC cookie header if user cancelled | ||
167 | */ | ||
168 | #define OIDC_COOKIE_HEADER_ACCESS_DENIED "Identity=Denied" | ||
169 | |||
170 | /** | ||
171 | * OIDC expected response_type while authorizing | ||
172 | */ | ||
173 | #define OIDC_EXPECTED_AUTHORIZATION_RESPONSE_TYPE "code" | ||
174 | |||
175 | /** | ||
176 | * OIDC expected scope part while authorizing | ||
177 | */ | ||
178 | #define OIDC_EXPECTED_AUTHORIZATION_SCOPE "openid" | ||
179 | |||
180 | /** | ||
181 | * OIDC error key for invalid client | ||
182 | */ | ||
183 | #define OIDC_ERROR_KEY_INVALID_CLIENT "invalid_client" | ||
184 | |||
185 | /** | ||
186 | * OIDC error key for invalid scopes | ||
187 | */ | ||
188 | #define OIDC_ERROR_KEY_INVALID_SCOPE "invalid_scope" | ||
189 | |||
190 | /** | ||
191 | * OIDC error key for invalid requests | ||
192 | */ | ||
193 | #define OIDC_ERROR_KEY_INVALID_REQUEST "invalid_request" | ||
194 | |||
195 | /** | ||
196 | * OIDC error key for invalid tokens | ||
197 | */ | ||
198 | #define OIDC_ERROR_KEY_INVALID_TOKEN "invalid_token" | ||
199 | |||
200 | /** | ||
201 | * OIDC error key for invalid cookies | ||
202 | */ | ||
203 | #define OIDC_ERROR_KEY_INVALID_COOKIE "invalid_cookie" | ||
204 | |||
205 | /** | ||
206 | * OIDC error key for generic server errors | ||
207 | */ | ||
208 | #define OIDC_ERROR_KEY_SERVER_ERROR "server_error" | ||
209 | |||
210 | /** | ||
211 | * OIDC error key for unsupported grants | ||
212 | */ | ||
213 | #define OIDC_ERROR_KEY_UNSUPPORTED_GRANT_TYPE "unsupported_grant_type" | ||
214 | |||
215 | /** | ||
216 | * OIDC error key for unsupported response types | ||
217 | */ | ||
218 | #define OIDC_ERROR_KEY_UNSUPPORTED_RESPONSE_TYPE "unsupported_response_type" | ||
219 | |||
220 | /** | ||
221 | * OIDC error key for unauthorized clients | ||
222 | */ | ||
223 | #define OIDC_ERROR_KEY_UNAUTHORIZED_CLIENT "unauthorized_client" | ||
224 | |||
225 | /** | ||
226 | * OIDC error key for denied access | ||
227 | */ | ||
228 | #define OIDC_ERROR_KEY_ACCESS_DENIED "access_denied" | ||
229 | |||
230 | /** | ||
231 | * How long to wait for a consume in userinfo endpoint | ||
232 | */ | ||
233 | #define CONSUME_TIMEOUT GNUNET_TIME_relative_multiply ( \ | ||
234 | GNUNET_TIME_UNIT_SECONDS,2) | ||
235 | |||
236 | /** | ||
237 | * OIDC ignored parameter array | ||
238 | */ | ||
239 | static char *OIDC_ignored_parameter_array[] = { "display", | ||
240 | "prompt", | ||
241 | "ui_locales", | ||
242 | "response_mode", | ||
243 | "id_token_hint", | ||
244 | "login_hint", | ||
245 | "acr_values" }; | ||
246 | |||
247 | /** | ||
248 | * OIDC hashmap for cached access tokens and codes | ||
249 | */ | ||
250 | struct GNUNET_CONTAINER_MultiHashMap *oidc_code_cache; | ||
251 | |||
252 | /** | ||
253 | * OIDC hashmap that keeps track of issued cookies | ||
254 | */ | ||
255 | struct GNUNET_CONTAINER_MultiHashMap *OIDC_cookie_jar_map; | ||
256 | |||
257 | /** | ||
258 | * The configuration handle | ||
259 | */ | ||
260 | const struct GNUNET_CONFIGURATION_Handle *cfg; | ||
261 | |||
262 | /** | ||
263 | * HTTP methods allows for this plugin | ||
264 | */ | ||
265 | static char *allow_methods; | ||
266 | |||
267 | /** | ||
268 | * Ego list | ||
269 | */ | ||
270 | static struct EgoEntry *ego_head; | ||
271 | |||
272 | /** | ||
273 | * Ego list | ||
274 | */ | ||
275 | static struct EgoEntry *ego_tail; | ||
276 | |||
277 | /** | ||
278 | * The processing state | ||
279 | */ | ||
280 | static int state; | ||
281 | |||
282 | /** | ||
283 | * Handle to Identity service. | ||
284 | */ | ||
285 | static struct GNUNET_IDENTITY_Handle *identity_handle; | ||
286 | |||
287 | /** | ||
288 | * GNS handle | ||
289 | */ | ||
290 | static struct GNUNET_GNS_Handle *gns_handle; | ||
291 | |||
292 | /** | ||
293 | * Identity Provider | ||
294 | */ | ||
295 | static struct GNUNET_RECLAIM_Handle *idp; | ||
296 | |||
297 | /** | ||
298 | * @brief struct returned by the initialization function of the plugin | ||
299 | */ | ||
300 | struct Plugin | ||
301 | { | ||
302 | const struct GNUNET_CONFIGURATION_Handle *cfg; | ||
303 | }; | ||
304 | |||
305 | /** | ||
306 | * OIDC needed variables | ||
307 | */ | ||
308 | struct OIDC_Variables | ||
309 | { | ||
310 | /** | ||
311 | * The RP client public key | ||
312 | */ | ||
313 | struct GNUNET_IDENTITY_PublicKey client_pkey; | ||
314 | |||
315 | /** | ||
316 | * The OIDC client id of the RP | ||
317 | */ | ||
318 | char *client_id; | ||
319 | |||
320 | /** | ||
321 | * The OIDC redirect uri | ||
322 | */ | ||
323 | char *redirect_uri; | ||
324 | |||
325 | /** | ||
326 | * The list of oidc scopes | ||
327 | */ | ||
328 | char *scope; | ||
329 | |||
330 | /** | ||
331 | * The OIDC state | ||
332 | */ | ||
333 | char *state; | ||
334 | |||
335 | /** | ||
336 | * The OIDC nonce | ||
337 | */ | ||
338 | char *nonce; | ||
339 | |||
340 | /** | ||
341 | * The OIDC claims | ||
342 | */ | ||
343 | char *claims; | ||
344 | |||
345 | /** | ||
346 | * The OIDC response type | ||
347 | */ | ||
348 | char *response_type; | ||
349 | |||
350 | /** | ||
351 | * The identity chosen by the user to login | ||
352 | */ | ||
353 | char *login_identity; | ||
354 | |||
355 | /** | ||
356 | * User cancelled authorization/login | ||
357 | */ | ||
358 | int user_cancelled; | ||
359 | |||
360 | /** | ||
361 | * The PKCE code_challenge | ||
362 | */ | ||
363 | char *code_challenge; | ||
364 | |||
365 | /** | ||
366 | * The PKCE code_verifier | ||
367 | */ | ||
368 | char *code_verifier; | ||
369 | |||
370 | }; | ||
371 | |||
372 | /** | ||
373 | * The ego list | ||
374 | */ | ||
375 | struct EgoEntry | ||
376 | { | ||
377 | /** | ||
378 | * DLL | ||
379 | */ | ||
380 | struct EgoEntry *next; | ||
381 | |||
382 | /** | ||
383 | * DLL | ||
384 | */ | ||
385 | struct EgoEntry *prev; | ||
386 | |||
387 | /** | ||
388 | * Ego Identifier | ||
389 | */ | ||
390 | char *identifier; | ||
391 | |||
392 | /** | ||
393 | * Public key string | ||
394 | */ | ||
395 | char *keystring; | ||
396 | |||
397 | /** | ||
398 | * The Ego | ||
399 | */ | ||
400 | struct GNUNET_IDENTITY_Ego *ego; | ||
401 | }; | ||
402 | |||
403 | |||
404 | struct RequestHandle | ||
405 | { | ||
406 | /** | ||
407 | * DLL | ||
408 | */ | ||
409 | struct RequestHandle *next; | ||
410 | |||
411 | /** | ||
412 | * DLL | ||
413 | */ | ||
414 | struct RequestHandle *prev; | ||
415 | |||
416 | /** | ||
417 | * Selected ego | ||
418 | */ | ||
419 | struct EgoEntry *ego_entry; | ||
420 | |||
421 | /** | ||
422 | * Pointer to ego private key | ||
423 | */ | ||
424 | struct GNUNET_IDENTITY_PrivateKey priv_key; | ||
425 | |||
426 | /** | ||
427 | * OIDC variables | ||
428 | */ | ||
429 | struct OIDC_Variables *oidc; | ||
430 | |||
431 | /** | ||
432 | * GNS lookup op | ||
433 | */ | ||
434 | struct GNUNET_GNS_LookupRequest *gns_op; | ||
435 | |||
436 | /** | ||
437 | * Rest connection | ||
438 | */ | ||
439 | struct GNUNET_REST_RequestHandle *rest_handle; | ||
440 | |||
441 | /** | ||
442 | * Attribute claim list for id_token | ||
443 | */ | ||
444 | struct GNUNET_RECLAIM_AttributeList *attr_idtoken_list; | ||
445 | |||
446 | /** | ||
447 | * Attribute claim list for userinfo | ||
448 | */ | ||
449 | struct GNUNET_RECLAIM_AttributeList *attr_userinfo_list; | ||
450 | |||
451 | /** | ||
452 | * Credentials | ||
453 | */ | ||
454 | struct GNUNET_RECLAIM_CredentialList *credentials; | ||
455 | |||
456 | /** | ||
457 | * Presentations | ||
458 | */ | ||
459 | struct GNUNET_RECLAIM_PresentationList *presentations; | ||
460 | |||
461 | /** | ||
462 | * IDENTITY Operation | ||
463 | */ | ||
464 | struct GNUNET_IDENTITY_Operation *op; | ||
465 | |||
466 | |||
467 | /** | ||
468 | * Idp Operation | ||
469 | */ | ||
470 | struct GNUNET_RECLAIM_Operation *idp_op; | ||
471 | |||
472 | /** | ||
473 | * Timeout task for consume | ||
474 | */ | ||
475 | struct GNUNET_SCHEDULER_Task *consume_timeout_op; | ||
476 | |||
477 | /** | ||
478 | * Attribute iterator | ||
479 | */ | ||
480 | struct GNUNET_RECLAIM_AttributeIterator *attr_it; | ||
481 | |||
482 | /** | ||
483 | * Credential iterator | ||
484 | */ | ||
485 | struct GNUNET_RECLAIM_CredentialIterator *cred_it; | ||
486 | |||
487 | |||
488 | /** | ||
489 | * Ticket iterator | ||
490 | */ | ||
491 | struct GNUNET_RECLAIM_TicketIterator *ticket_it; | ||
492 | |||
493 | /** | ||
494 | * A ticket | ||
495 | */ | ||
496 | struct GNUNET_RECLAIM_Ticket ticket; | ||
497 | |||
498 | /** | ||
499 | * Desired timeout for the lookup (default is no timeout). | ||
500 | */ | ||
501 | struct GNUNET_TIME_Relative timeout; | ||
502 | |||
503 | /** | ||
504 | * ID of a task associated with the resolution process. | ||
505 | */ | ||
506 | struct GNUNET_SCHEDULER_Task *timeout_task; | ||
507 | |||
508 | /** | ||
509 | * The plugin result processor | ||
510 | */ | ||
511 | GNUNET_REST_ResultProcessor proc; | ||
512 | |||
513 | /** | ||
514 | * The closure of the result processor | ||
515 | */ | ||
516 | void *proc_cls; | ||
517 | |||
518 | /** | ||
519 | * The url | ||
520 | */ | ||
521 | char *url; | ||
522 | |||
523 | /** | ||
524 | * The passed access token | ||
525 | */ | ||
526 | char *access_token; | ||
527 | |||
528 | /** | ||
529 | * The tld for redirect | ||
530 | */ | ||
531 | char *tld; | ||
532 | |||
533 | /** | ||
534 | * The redirect prefix | ||
535 | */ | ||
536 | char *redirect_prefix; | ||
537 | |||
538 | /** | ||
539 | * The redirect suffix | ||
540 | */ | ||
541 | char *redirect_suffix; | ||
542 | |||
543 | /** | ||
544 | * Error response message | ||
545 | */ | ||
546 | char *emsg; | ||
547 | |||
548 | /** | ||
549 | * Error response description | ||
550 | */ | ||
551 | char *edesc; | ||
552 | |||
553 | /** | ||
554 | * Response code | ||
555 | */ | ||
556 | int response_code; | ||
557 | |||
558 | /** | ||
559 | * Public client | ||
560 | */ | ||
561 | int public_client; | ||
562 | }; | ||
563 | |||
564 | /** | ||
565 | * DLL | ||
566 | */ | ||
567 | static struct RequestHandle *requests_head; | ||
568 | |||
569 | /** | ||
570 | * DLL | ||
571 | */ | ||
572 | static struct RequestHandle *requests_tail; | ||
573 | |||
574 | |||
575 | /** | ||
576 | * Cleanup lookup handle | ||
577 | * @param handle Handle to clean up | ||
578 | */ | ||
579 | static void | ||
580 | cleanup_handle (struct RequestHandle *handle) | ||
581 | { | ||
582 | |||
583 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Cleaning up\n"); | ||
584 | if (NULL != handle->timeout_task) | ||
585 | GNUNET_SCHEDULER_cancel (handle->timeout_task); | ||
586 | if (NULL != handle->attr_it) | ||
587 | GNUNET_RECLAIM_get_attributes_stop (handle->attr_it); | ||
588 | if (NULL != handle->cred_it) | ||
589 | GNUNET_RECLAIM_get_credentials_stop (handle->cred_it); | ||
590 | if (NULL != handle->ticket_it) | ||
591 | GNUNET_RECLAIM_ticket_iteration_stop (handle->ticket_it); | ||
592 | if (NULL != handle->idp_op) | ||
593 | GNUNET_RECLAIM_cancel (handle->idp_op); | ||
594 | if (NULL != handle->consume_timeout_op) | ||
595 | GNUNET_SCHEDULER_cancel (handle->consume_timeout_op); | ||
596 | GNUNET_free (handle->url); | ||
597 | GNUNET_free (handle->tld); | ||
598 | GNUNET_free (handle->redirect_prefix); | ||
599 | GNUNET_free (handle->redirect_suffix); | ||
600 | GNUNET_free (handle->emsg); | ||
601 | GNUNET_free (handle->edesc); | ||
602 | if (NULL != handle->gns_op) | ||
603 | GNUNET_GNS_lookup_cancel (handle->gns_op); | ||
604 | if (NULL != handle->oidc) | ||
605 | { | ||
606 | GNUNET_free (handle->oidc->client_id); | ||
607 | GNUNET_free (handle->oidc->login_identity); | ||
608 | GNUNET_free (handle->oidc->nonce); | ||
609 | GNUNET_free (handle->oidc->redirect_uri); | ||
610 | GNUNET_free (handle->oidc->response_type); | ||
611 | GNUNET_free (handle->oidc->scope); | ||
612 | GNUNET_free (handle->oidc->state); | ||
613 | if (NULL != handle->oidc->claims) | ||
614 | GNUNET_free (handle->oidc->claims); | ||
615 | if (NULL != handle->oidc->code_challenge) | ||
616 | GNUNET_free (handle->oidc->code_challenge); | ||
617 | GNUNET_free (handle->oidc); | ||
618 | } | ||
619 | if (NULL!=handle->attr_idtoken_list) | ||
620 | GNUNET_RECLAIM_attribute_list_destroy (handle->attr_idtoken_list); | ||
621 | if (NULL!=handle->attr_userinfo_list) | ||
622 | GNUNET_RECLAIM_attribute_list_destroy (handle->attr_userinfo_list); | ||
623 | if (NULL!=handle->credentials) | ||
624 | GNUNET_RECLAIM_credential_list_destroy (handle->credentials); | ||
625 | if (NULL!=handle->presentations) | ||
626 | GNUNET_RECLAIM_presentation_list_destroy (handle->presentations); | ||
627 | GNUNET_CONTAINER_DLL_remove (requests_head, | ||
628 | requests_tail, | ||
629 | handle); | ||
630 | if (NULL != handle->access_token) | ||
631 | GNUNET_free (handle->access_token); | ||
632 | GNUNET_free (handle); | ||
633 | } | ||
634 | |||
635 | |||
636 | /** | ||
637 | * Task run on error, sends error message. Cleans up everything. | ||
638 | * | ||
639 | * @param cls the `struct RequestHandle` | ||
640 | */ | ||
641 | static void | ||
642 | do_error (void *cls) | ||
643 | { | ||
644 | struct RequestHandle *handle = cls; | ||
645 | struct MHD_Response *resp; | ||
646 | char *json_error; | ||
647 | |||
648 | GNUNET_asprintf (&json_error, | ||
649 | "{ \"error\" : \"%s\", \"error_description\" : \"%s\"%s%s%s}", | ||
650 | handle->emsg, | ||
651 | (NULL != handle->edesc) ? handle->edesc : "", | ||
652 | (NULL != handle->oidc->state) ? ", \"state\":\"" : "", | ||
653 | (NULL != handle->oidc->state) ? handle->oidc->state : "", | ||
654 | (NULL != handle->oidc->state) ? "\"" : ""); | ||
655 | if (0 == handle->response_code) | ||
656 | handle->response_code = MHD_HTTP_BAD_REQUEST; | ||
657 | resp = GNUNET_REST_create_response (json_error); | ||
658 | if (MHD_HTTP_UNAUTHORIZED == handle->response_code) | ||
659 | GNUNET_assert (MHD_NO != | ||
660 | MHD_add_response_header (resp, | ||
661 | MHD_HTTP_HEADER_WWW_AUTHENTICATE, | ||
662 | "Basic")); | ||
663 | MHD_add_response_header (resp, | ||
664 | MHD_HTTP_HEADER_CONTENT_TYPE, | ||
665 | "application/json"); | ||
666 | handle->proc (handle->proc_cls, resp, handle->response_code); | ||
667 | cleanup_handle (handle); | ||
668 | GNUNET_free (json_error); | ||
669 | } | ||
670 | |||
671 | |||
672 | /** | ||
673 | * Task run on error in userinfo endpoint, sends error header. Cleans up | ||
674 | * everything | ||
675 | * | ||
676 | * @param cls the `struct RequestHandle` | ||
677 | */ | ||
678 | static void | ||
679 | do_userinfo_error (void *cls) | ||
680 | { | ||
681 | struct RequestHandle *handle = cls; | ||
682 | struct MHD_Response *resp; | ||
683 | char *error; | ||
684 | |||
685 | GNUNET_log (GNUNET_ERROR_TYPE_ERROR, | ||
686 | "Error: %s\n", handle->edesc); | ||
687 | GNUNET_asprintf (&error, | ||
688 | "error=\"%s\", error_description=\"%s\"", | ||
689 | handle->emsg, | ||
690 | (NULL != handle->edesc) ? handle->edesc : ""); | ||
691 | resp = GNUNET_REST_create_response (""); | ||
692 | GNUNET_assert (MHD_NO != | ||
693 | MHD_add_response_header (resp, | ||
694 | MHD_HTTP_HEADER_WWW_AUTHENTICATE, | ||
695 | "Bearer")); | ||
696 | handle->proc (handle->proc_cls, resp, handle->response_code); | ||
697 | cleanup_handle (handle); | ||
698 | GNUNET_free (error); | ||
699 | } | ||
700 | |||
701 | |||
702 | /** | ||
703 | * Task run on error, sends error message and redirects. Cleans up everything. | ||
704 | * | ||
705 | * @param cls the `struct RequestHandle` | ||
706 | */ | ||
707 | static void | ||
708 | do_redirect_error (void *cls) | ||
709 | { | ||
710 | struct RequestHandle *handle = cls; | ||
711 | struct MHD_Response *resp; | ||
712 | char *redirect; | ||
713 | |||
714 | GNUNET_asprintf (&redirect, | ||
715 | "%s?error=%s&error_description=%s%s%s", | ||
716 | handle->oidc->redirect_uri, | ||
717 | handle->emsg, | ||
718 | handle->edesc, | ||
719 | (NULL != handle->oidc->state) ? "&state=" : "", | ||
720 | (NULL != handle->oidc->state) ? handle->oidc->state : ""); | ||
721 | resp = GNUNET_REST_create_response (""); | ||
722 | GNUNET_assert (MHD_NO != MHD_add_response_header (resp, | ||
723 | "Location", redirect)); | ||
724 | handle->proc (handle->proc_cls, resp, MHD_HTTP_FOUND); | ||
725 | cleanup_handle (handle); | ||
726 | GNUNET_free (redirect); | ||
727 | } | ||
728 | |||
729 | |||
730 | /** | ||
731 | * Task run on timeout, sends error message. Cleans up everything. | ||
732 | * | ||
733 | * @param cls the `struct RequestHandle` | ||
734 | */ | ||
735 | static void | ||
736 | do_timeout (void *cls) | ||
737 | { | ||
738 | struct RequestHandle *handle = cls; | ||
739 | |||
740 | handle->timeout_task = NULL; | ||
741 | do_error (handle); | ||
742 | } | ||
743 | |||
744 | |||
745 | /** | ||
746 | * Respond to OPTIONS request | ||
747 | * | ||
748 | * @param con_handle the connection handle | ||
749 | * @param url the url | ||
750 | * @param cls the RequestHandle | ||
751 | */ | ||
752 | static void | ||
753 | options_cont (struct GNUNET_REST_RequestHandle *con_handle, | ||
754 | const char *url, | ||
755 | void *cls) | ||
756 | { | ||
757 | struct MHD_Response *resp; | ||
758 | struct RequestHandle *handle = cls; | ||
759 | |||
760 | // For now, independent of path return all options | ||
761 | resp = GNUNET_REST_create_response (NULL); | ||
762 | MHD_add_response_header (resp, "Access-Control-Allow-Methods", allow_methods); | ||
763 | handle->proc (handle->proc_cls, resp, MHD_HTTP_OK); | ||
764 | cleanup_handle (handle); | ||
765 | return; | ||
766 | } | ||
767 | |||
768 | |||
769 | /** | ||
770 | * Interprets cookie header and pass its identity keystring to handle | ||
771 | */ | ||
772 | static void | ||
773 | cookie_identity_interpretation (struct RequestHandle *handle) | ||
774 | { | ||
775 | struct GNUNET_HashCode cache_key; | ||
776 | char *cookies; | ||
777 | struct GNUNET_TIME_Absolute current_time, *relog_time; | ||
778 | char delimiter[] = "; "; | ||
779 | char *tmp_cookies; | ||
780 | char *token; | ||
781 | char *value; | ||
782 | |||
783 | // gets identity of login try with cookie | ||
784 | GNUNET_CRYPTO_hash (OIDC_COOKIE_HEADER_KEY, | ||
785 | strlen (OIDC_COOKIE_HEADER_KEY), | ||
786 | &cache_key); | ||
787 | if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle | ||
788 | ->header_param_map, | ||
789 | &cache_key)) | ||
790 | { | ||
791 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No cookie found\n"); | ||
792 | return; | ||
793 | } | ||
794 | // splits cookies and find 'Identity' cookie | ||
795 | tmp_cookies = | ||
796 | GNUNET_CONTAINER_multihashmap_get (handle->rest_handle->header_param_map, | ||
797 | &cache_key); | ||
798 | cookies = GNUNET_strdup (tmp_cookies); | ||
799 | token = strtok (cookies, delimiter); | ||
800 | handle->oidc->user_cancelled = GNUNET_NO; | ||
801 | handle->oidc->login_identity = NULL; | ||
802 | if (NULL == token) | ||
803 | { | ||
804 | GNUNET_log (GNUNET_ERROR_TYPE_ERROR, | ||
805 | "Unable to parse cookie: %s\n", | ||
806 | cookies); | ||
807 | GNUNET_free (cookies); | ||
808 | return; | ||
809 | } | ||
810 | |||
811 | while (NULL != token) | ||
812 | { | ||
813 | if (0 == strcmp (token, OIDC_COOKIE_HEADER_ACCESS_DENIED)) | ||
814 | { | ||
815 | handle->oidc->user_cancelled = GNUNET_YES; | ||
816 | GNUNET_free (cookies); | ||
817 | return; | ||
818 | } | ||
819 | if (NULL != strstr (token, OIDC_COOKIE_HEADER_INFORMATION_KEY)) | ||
820 | break; | ||
821 | token = strtok (NULL, delimiter); | ||
822 | } | ||
823 | if (NULL == token) | ||
824 | { | ||
825 | GNUNET_log (GNUNET_ERROR_TYPE_ERROR, | ||
826 | "No cookie value to process: %s\n", | ||
827 | cookies); | ||
828 | GNUNET_free (cookies); | ||
829 | return; | ||
830 | } | ||
831 | GNUNET_CRYPTO_hash (token, strlen (token), &cache_key); | ||
832 | if (GNUNET_NO == | ||
833 | GNUNET_CONTAINER_multihashmap_contains (OIDC_cookie_jar_map, &cache_key)) | ||
834 | { | ||
835 | GNUNET_log ( | ||
836 | GNUNET_ERROR_TYPE_WARNING, | ||
837 | "Found cookie `%s', but no corresponding expiration entry present...\n", | ||
838 | token); | ||
839 | GNUNET_free (cookies); | ||
840 | return; | ||
841 | } | ||
842 | relog_time = | ||
843 | GNUNET_CONTAINER_multihashmap_get (OIDC_cookie_jar_map, &cache_key); | ||
844 | current_time = GNUNET_TIME_absolute_get (); | ||
845 | // 30 min after old login -> redirect to login | ||
846 | if (current_time.abs_value_us > relog_time->abs_value_us) | ||
847 | { | ||
848 | GNUNET_log (GNUNET_ERROR_TYPE_WARNING, | ||
849 | "Found cookie `%s', but it is expired.\n", | ||
850 | token); | ||
851 | GNUNET_free (cookies); | ||
852 | return; | ||
853 | } | ||
854 | value = strtok (token, OIDC_COOKIE_HEADER_INFORMATION_KEY); | ||
855 | GNUNET_assert (NULL != value); | ||
856 | handle->oidc->login_identity = GNUNET_strdup (value); | ||
857 | GNUNET_free (cookies); | ||
858 | } | ||
859 | |||
860 | |||
861 | /** | ||
862 | * Redirects to login page stored in configuration file | ||
863 | */ | ||
864 | static void | ||
865 | login_redirect (void *cls) | ||
866 | { | ||
867 | char *login_base_url; | ||
868 | char *new_redirect; | ||
869 | char *tmp; | ||
870 | struct MHD_Response *resp; | ||
871 | struct GNUNET_Buffer buf = { 0 }; | ||
872 | struct RequestHandle *handle = cls; | ||
873 | |||
874 | if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (cfg, | ||
875 | "reclaim-rest-plugin", | ||
876 | "address", | ||
877 | &login_base_url)) | ||
878 | { | ||
879 | GNUNET_buffer_write_str (&buf, login_base_url); | ||
880 | GNUNET_buffer_write_fstr (&buf, | ||
881 | "?%s=%s", | ||
882 | OIDC_RESPONSE_TYPE_KEY, | ||
883 | handle->oidc->response_type); | ||
884 | GNUNET_buffer_write_fstr (&buf, | ||
885 | "&%s=%s", | ||
886 | OIDC_CLIENT_ID_KEY, | ||
887 | handle->oidc->client_id); | ||
888 | GNUNET_STRINGS_urlencode (handle->oidc->redirect_uri, | ||
889 | strlen (handle->oidc->redirect_uri), | ||
890 | &tmp); | ||
891 | GNUNET_buffer_write_fstr (&buf, | ||
892 | "&%s=%s", | ||
893 | OIDC_REDIRECT_URI_KEY, | ||
894 | tmp); | ||
895 | GNUNET_free (tmp); | ||
896 | GNUNET_STRINGS_urlencode (handle->oidc->scope, | ||
897 | strlen (handle->oidc->scope), | ||
898 | &tmp); | ||
899 | GNUNET_buffer_write_fstr (&buf, | ||
900 | "&%s=%s", | ||
901 | OIDC_SCOPE_KEY, | ||
902 | tmp); | ||
903 | GNUNET_free (tmp); | ||
904 | if (NULL != handle->oidc->state) | ||
905 | { | ||
906 | GNUNET_STRINGS_urlencode (handle->oidc->state, | ||
907 | strlen (handle->oidc->state), | ||
908 | &tmp); | ||
909 | GNUNET_buffer_write_fstr (&buf, | ||
910 | "&%s=%s", | ||
911 | OIDC_STATE_KEY, | ||
912 | handle->oidc->state); | ||
913 | GNUNET_free (tmp); | ||
914 | } | ||
915 | if (NULL != handle->oidc->code_challenge) | ||
916 | { | ||
917 | GNUNET_buffer_write_fstr (&buf, | ||
918 | "&%s=%s", | ||
919 | OIDC_CODE_CHALLENGE_KEY, | ||
920 | handle->oidc->code_challenge); | ||
921 | } | ||
922 | if (NULL != handle->oidc->nonce) | ||
923 | { | ||
924 | GNUNET_buffer_write_fstr (&buf, | ||
925 | "&%s=%s", | ||
926 | OIDC_NONCE_KEY, | ||
927 | handle->oidc->nonce); | ||
928 | } | ||
929 | if (NULL != handle->oidc->claims) | ||
930 | { | ||
931 | GNUNET_STRINGS_urlencode (handle->oidc->claims, | ||
932 | strlen (handle->oidc->claims), | ||
933 | &tmp); | ||
934 | GNUNET_buffer_write_fstr (&buf, | ||
935 | "&%s=%s", | ||
936 | OIDC_CLAIMS_KEY, | ||
937 | tmp); | ||
938 | GNUNET_free (tmp); | ||
939 | } | ||
940 | new_redirect = GNUNET_buffer_reap_str (&buf); | ||
941 | resp = GNUNET_REST_create_response (""); | ||
942 | MHD_add_response_header (resp, "Location", new_redirect); | ||
943 | GNUNET_free (login_base_url); | ||
944 | } | ||
945 | else | ||
946 | { | ||
947 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_SERVER_ERROR); | ||
948 | handle->edesc = GNUNET_strdup ("gnunet configuration failed"); | ||
949 | handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR; | ||
950 | GNUNET_SCHEDULER_add_now (&do_error, handle); | ||
951 | return; | ||
952 | } | ||
953 | handle->proc (handle->proc_cls, resp, MHD_HTTP_FOUND); | ||
954 | GNUNET_free (new_redirect); | ||
955 | cleanup_handle (handle); | ||
956 | } | ||
957 | |||
958 | |||
959 | /** | ||
960 | * Does internal server error when iteration failed. | ||
961 | */ | ||
962 | static void | ||
963 | oidc_iteration_error (void *cls) | ||
964 | { | ||
965 | struct RequestHandle *handle = cls; | ||
966 | |||
967 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_SERVER_ERROR); | ||
968 | handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR; | ||
969 | GNUNET_SCHEDULER_add_now (&do_error, handle); | ||
970 | } | ||
971 | |||
972 | |||
973 | /** | ||
974 | * Issues ticket and redirects to relying party with the authorization code as | ||
975 | * parameter. Otherwise redirects with error | ||
976 | */ | ||
977 | static void | ||
978 | oidc_ticket_issue_cb (void *cls, | ||
979 | const struct GNUNET_RECLAIM_Ticket *ticket, | ||
980 | const struct | ||
981 | GNUNET_RECLAIM_PresentationList *presentation) | ||
982 | { | ||
983 | struct RequestHandle *handle = cls; | ||
984 | struct MHD_Response *resp; | ||
985 | char *ticket_str; | ||
986 | char *redirect_uri; | ||
987 | char *code_string; | ||
988 | |||
989 | handle->idp_op = NULL; | ||
990 | if (NULL == ticket) | ||
991 | { | ||
992 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_SERVER_ERROR); | ||
993 | handle->edesc = GNUNET_strdup ("Server cannot generate ticket."); | ||
994 | GNUNET_SCHEDULER_add_now (&do_redirect_error, handle); | ||
995 | return; | ||
996 | } | ||
997 | handle->ticket = *ticket; | ||
998 | ticket_str = | ||
999 | GNUNET_STRINGS_data_to_string_alloc (&handle->ticket, | ||
1000 | sizeof(struct GNUNET_RECLAIM_Ticket)); | ||
1001 | code_string = OIDC_build_authz_code (&handle->priv_key, | ||
1002 | &handle->ticket, | ||
1003 | handle->attr_idtoken_list, | ||
1004 | presentation, | ||
1005 | handle->oidc->nonce, | ||
1006 | handle->oidc->code_challenge); | ||
1007 | if ((NULL != handle->redirect_prefix) && (NULL != handle->redirect_suffix) && | ||
1008 | (NULL != handle->tld)) | ||
1009 | { | ||
1010 | GNUNET_asprintf (&redirect_uri, | ||
1011 | "%s.%s/%s%s%s=%s&state=%s", | ||
1012 | handle->redirect_prefix, | ||
1013 | handle->tld, | ||
1014 | handle->redirect_suffix, | ||
1015 | (NULL == strchr (handle->redirect_suffix, '?') ? "?" : | ||
1016 | "&"), | ||
1017 | handle->oidc->response_type, | ||
1018 | code_string, | ||
1019 | handle->oidc->state); | ||
1020 | } | ||
1021 | else | ||
1022 | { | ||
1023 | GNUNET_asprintf (&redirect_uri, | ||
1024 | "%s%s%s=%s&state=%s", | ||
1025 | handle->oidc->redirect_uri, | ||
1026 | (NULL == strchr (handle->oidc->redirect_uri, '?') ? "?" : | ||
1027 | "&"), | ||
1028 | handle->oidc->response_type, | ||
1029 | code_string, | ||
1030 | handle->oidc->state); | ||
1031 | } | ||
1032 | resp = GNUNET_REST_create_response (""); | ||
1033 | GNUNET_assert (MHD_NO != MHD_add_response_header (resp, | ||
1034 | "Location", redirect_uri)); | ||
1035 | handle->proc (handle->proc_cls, resp, MHD_HTTP_FOUND); | ||
1036 | cleanup_handle (handle); | ||
1037 | GNUNET_free (redirect_uri); | ||
1038 | GNUNET_free (ticket_str); | ||
1039 | GNUNET_free (code_string); | ||
1040 | } | ||
1041 | |||
1042 | |||
1043 | static struct GNUNET_RECLAIM_AttributeList* | ||
1044 | attribute_list_merge (struct GNUNET_RECLAIM_AttributeList *list_a, | ||
1045 | struct GNUNET_RECLAIM_AttributeList *list_b) | ||
1046 | { | ||
1047 | struct GNUNET_RECLAIM_AttributeList *merged_list; | ||
1048 | struct GNUNET_RECLAIM_AttributeListEntry *le_a; | ||
1049 | struct GNUNET_RECLAIM_AttributeListEntry *le_b; | ||
1050 | struct GNUNET_RECLAIM_AttributeListEntry *le_m; | ||
1051 | |||
1052 | merged_list = GNUNET_new (struct GNUNET_RECLAIM_AttributeList); | ||
1053 | for (le_a = list_a->list_head; NULL != le_a; le_a = le_a->next) | ||
1054 | { | ||
1055 | le_m = GNUNET_new (struct GNUNET_RECLAIM_AttributeListEntry); | ||
1056 | le_m->attribute = GNUNET_RECLAIM_attribute_new (le_a->attribute->name, | ||
1057 | &le_a->attribute-> | ||
1058 | credential, | ||
1059 | le_a->attribute->type, | ||
1060 | le_a->attribute->data, | ||
1061 | le_a->attribute->data_size); | ||
1062 | le_m->attribute->id = le_a->attribute->id; | ||
1063 | le_m->attribute->flag = le_a->attribute->flag; | ||
1064 | le_m->attribute->credential = le_a->attribute->credential; | ||
1065 | GNUNET_CONTAINER_DLL_insert (merged_list->list_head, | ||
1066 | merged_list->list_tail, | ||
1067 | le_m); | ||
1068 | } | ||
1069 | le_m = NULL; | ||
1070 | for (le_b = list_b->list_head; NULL != le_b; le_b = le_b->next) | ||
1071 | { | ||
1072 | for (le_m = merged_list->list_head; NULL != le_m; le_m = le_m->next) | ||
1073 | { | ||
1074 | if (GNUNET_YES == GNUNET_RECLAIM_id_is_equal (&le_m->attribute->id, | ||
1075 | &le_b->attribute->id)) | ||
1076 | break; /** Attribute already in list **/ | ||
1077 | } | ||
1078 | if (NULL != le_m) | ||
1079 | continue; /** Attribute already in list **/ | ||
1080 | le_m = GNUNET_new (struct GNUNET_RECLAIM_AttributeListEntry); | ||
1081 | le_m->attribute = GNUNET_RECLAIM_attribute_new (le_b->attribute->name, | ||
1082 | &le_b->attribute-> | ||
1083 | credential, | ||
1084 | le_b->attribute->type, | ||
1085 | le_b->attribute->data, | ||
1086 | le_b->attribute->data_size); | ||
1087 | le_m->attribute->id = le_b->attribute->id; | ||
1088 | le_m->attribute->flag = le_b->attribute->flag; | ||
1089 | le_m->attribute->credential = le_b->attribute->credential; | ||
1090 | GNUNET_CONTAINER_DLL_insert (merged_list->list_head, | ||
1091 | merged_list->list_tail, | ||
1092 | le_m); | ||
1093 | } | ||
1094 | return merged_list; | ||
1095 | } | ||
1096 | |||
1097 | |||
1098 | static void | ||
1099 | oidc_cred_collect_finished_cb (void *cls) | ||
1100 | { | ||
1101 | struct RequestHandle *handle = cls; | ||
1102 | struct GNUNET_RECLAIM_AttributeList *merged_list; | ||
1103 | struct GNUNET_RECLAIM_AttributeListEntry *le_m; | ||
1104 | |||
1105 | handle->cred_it = NULL; | ||
1106 | merged_list = attribute_list_merge (handle->attr_idtoken_list, | ||
1107 | handle->attr_userinfo_list); | ||
1108 | for (le_m = merged_list->list_head; NULL != le_m; le_m = le_m->next) | ||
1109 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
1110 | "List Attribute in ticket to issue: %s\n", | ||
1111 | le_m->attribute->name); | ||
1112 | handle->idp_op = GNUNET_RECLAIM_ticket_issue (idp, | ||
1113 | &handle->priv_key, | ||
1114 | &handle->oidc->client_pkey, | ||
1115 | merged_list, | ||
1116 | &oidc_ticket_issue_cb, | ||
1117 | handle); | ||
1118 | GNUNET_RECLAIM_attribute_list_destroy (merged_list); | ||
1119 | } | ||
1120 | |||
1121 | |||
1122 | /** | ||
1123 | * Collects all attributes for an ego if in scope parameter | ||
1124 | */ | ||
1125 | static void | ||
1126 | oidc_cred_collect (void *cls, | ||
1127 | const struct GNUNET_IDENTITY_PublicKey *identity, | ||
1128 | const struct GNUNET_RECLAIM_Credential *cred) | ||
1129 | { | ||
1130 | struct RequestHandle *handle = cls; | ||
1131 | struct GNUNET_RECLAIM_AttributeListEntry *le; | ||
1132 | struct GNUNET_RECLAIM_CredentialListEntry *ale; | ||
1133 | |||
1134 | for (ale = handle->credentials->list_head; NULL != ale; ale = ale->next) | ||
1135 | { | ||
1136 | if (GNUNET_NO == GNUNET_RECLAIM_id_is_equal (&ale->credential->id, | ||
1137 | &cred->id)) | ||
1138 | continue; | ||
1139 | /** Credential already in list **/ | ||
1140 | GNUNET_RECLAIM_get_credentials_next (handle->cred_it); | ||
1141 | return; | ||
1142 | } | ||
1143 | |||
1144 | for (le = handle->attr_idtoken_list->list_head; NULL != le; le = le->next) | ||
1145 | { | ||
1146 | if (GNUNET_NO == GNUNET_RECLAIM_id_is_equal (&le->attribute->credential, | ||
1147 | &cred->id)) | ||
1148 | continue; | ||
1149 | /** Credential matches for attribute, add **/ | ||
1150 | ale = GNUNET_new (struct GNUNET_RECLAIM_CredentialListEntry); | ||
1151 | ale->credential = GNUNET_RECLAIM_credential_new (cred->name, | ||
1152 | cred->type, | ||
1153 | cred->data, | ||
1154 | cred->data_size); | ||
1155 | GNUNET_CONTAINER_DLL_insert (handle->credentials->list_head, | ||
1156 | handle->credentials->list_tail, | ||
1157 | ale); | ||
1158 | } | ||
1159 | GNUNET_RECLAIM_get_credentials_next (handle->cred_it); | ||
1160 | } | ||
1161 | |||
1162 | |||
1163 | static void | ||
1164 | oidc_attr_collect_finished_cb (void *cls) | ||
1165 | { | ||
1166 | struct RequestHandle *handle = cls; | ||
1167 | |||
1168 | handle->attr_it = NULL; | ||
1169 | handle->ticket_it = NULL; | ||
1170 | if (NULL == handle->attr_idtoken_list->list_head) | ||
1171 | { | ||
1172 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_SCOPE); | ||
1173 | handle->edesc = GNUNET_strdup ("The requested scope is not available."); | ||
1174 | GNUNET_SCHEDULER_add_now (&do_redirect_error, handle); | ||
1175 | return; | ||
1176 | } | ||
1177 | handle->credentials = GNUNET_new (struct GNUNET_RECLAIM_CredentialList); | ||
1178 | handle->cred_it = | ||
1179 | GNUNET_RECLAIM_get_credentials_start (idp, | ||
1180 | &handle->priv_key, | ||
1181 | &oidc_iteration_error, | ||
1182 | handle, | ||
1183 | &oidc_cred_collect, | ||
1184 | handle, | ||
1185 | &oidc_cred_collect_finished_cb, | ||
1186 | handle); | ||
1187 | |||
1188 | } | ||
1189 | |||
1190 | |||
1191 | static int | ||
1192 | attr_in_claims_request (struct RequestHandle *handle, | ||
1193 | const char *attr_name, | ||
1194 | const char *claims_parameter) | ||
1195 | { | ||
1196 | int ret = GNUNET_NO; | ||
1197 | json_t *root; | ||
1198 | json_error_t error; | ||
1199 | json_t *claims_j; | ||
1200 | const char *key; | ||
1201 | json_t *value; | ||
1202 | |||
1203 | /** Check if attribute is requested through a scope **/ | ||
1204 | if (GNUNET_YES == OIDC_check_scopes_for_claim_request (handle->oidc->scope, | ||
1205 | attr_name)) | ||
1206 | return GNUNET_YES; | ||
1207 | |||
1208 | /** Try claims parameter if not in scope */ | ||
1209 | if (NULL != handle->oidc->claims) | ||
1210 | { | ||
1211 | root = json_loads (handle->oidc->claims, JSON_DECODE_ANY, &error); | ||
1212 | claims_j = json_object_get (root, claims_parameter); | ||
1213 | /* obj is a JSON object */ | ||
1214 | if (NULL != claims_j) | ||
1215 | { | ||
1216 | json_object_foreach (claims_j, key, value) { | ||
1217 | if (0 != strcmp (attr_name, key)) | ||
1218 | continue; | ||
1219 | ret = GNUNET_YES; | ||
1220 | break; | ||
1221 | } | ||
1222 | } | ||
1223 | json_decref (root); | ||
1224 | } | ||
1225 | return ret; | ||
1226 | } | ||
1227 | |||
1228 | |||
1229 | static int | ||
1230 | attr_in_idtoken_request (struct RequestHandle *handle, | ||
1231 | const char *attr_name) | ||
1232 | { | ||
1233 | return attr_in_claims_request (handle, attr_name, "id_token"); | ||
1234 | } | ||
1235 | |||
1236 | |||
1237 | static int | ||
1238 | attr_in_userinfo_request (struct RequestHandle *handle, | ||
1239 | const char *attr_name) | ||
1240 | { | ||
1241 | return attr_in_claims_request (handle, attr_name, "userinfo"); | ||
1242 | } | ||
1243 | |||
1244 | |||
1245 | /** | ||
1246 | * Collects all attributes for an ego if in scope parameter | ||
1247 | */ | ||
1248 | static void | ||
1249 | oidc_attr_collect (void *cls, | ||
1250 | const struct GNUNET_IDENTITY_PublicKey *identity, | ||
1251 | const struct GNUNET_RECLAIM_Attribute *attr) | ||
1252 | { | ||
1253 | struct RequestHandle *handle = cls; | ||
1254 | struct GNUNET_RECLAIM_AttributeListEntry *le; | ||
1255 | if (GNUNET_YES == attr_in_idtoken_request (handle, attr->name)) | ||
1256 | { | ||
1257 | le = GNUNET_new (struct GNUNET_RECLAIM_AttributeListEntry); | ||
1258 | le->attribute = GNUNET_RECLAIM_attribute_new (attr->name, | ||
1259 | &attr->credential, | ||
1260 | attr->type, | ||
1261 | attr->data, | ||
1262 | attr->data_size); | ||
1263 | le->attribute->id = attr->id; | ||
1264 | le->attribute->flag = attr->flag; | ||
1265 | le->attribute->credential = attr->credential; | ||
1266 | GNUNET_CONTAINER_DLL_insert (handle->attr_idtoken_list->list_head, | ||
1267 | handle->attr_idtoken_list->list_tail, | ||
1268 | le); | ||
1269 | } | ||
1270 | if (GNUNET_YES == attr_in_userinfo_request (handle, attr->name)) | ||
1271 | { | ||
1272 | le = GNUNET_new (struct GNUNET_RECLAIM_AttributeListEntry); | ||
1273 | le->attribute = GNUNET_RECLAIM_attribute_new (attr->name, | ||
1274 | &attr->credential, | ||
1275 | attr->type, | ||
1276 | attr->data, | ||
1277 | attr->data_size); | ||
1278 | le->attribute->id = attr->id; | ||
1279 | le->attribute->flag = attr->flag; | ||
1280 | le->attribute->credential = attr->credential; | ||
1281 | GNUNET_CONTAINER_DLL_insert (handle->attr_userinfo_list->list_head, | ||
1282 | handle->attr_userinfo_list->list_tail, | ||
1283 | le); | ||
1284 | } | ||
1285 | |||
1286 | GNUNET_RECLAIM_get_attributes_next (handle->attr_it); | ||
1287 | } | ||
1288 | |||
1289 | |||
1290 | /** | ||
1291 | * Checks time and cookie and redirects accordingly | ||
1292 | */ | ||
1293 | static void | ||
1294 | code_redirect (void *cls) | ||
1295 | { | ||
1296 | struct RequestHandle *handle = cls; | ||
1297 | struct GNUNET_TIME_Absolute current_time; | ||
1298 | struct GNUNET_TIME_Absolute *relog_time; | ||
1299 | struct GNUNET_IDENTITY_PublicKey pubkey; | ||
1300 | struct GNUNET_IDENTITY_PublicKey ego_pkey; | ||
1301 | struct GNUNET_HashCode cache_key; | ||
1302 | char *identity_cookie; | ||
1303 | |||
1304 | GNUNET_asprintf (&identity_cookie, | ||
1305 | "Identity=%s", | ||
1306 | handle->oidc->login_identity); | ||
1307 | GNUNET_CRYPTO_hash (identity_cookie, strlen (identity_cookie), &cache_key); | ||
1308 | GNUNET_free (identity_cookie); | ||
1309 | // No login time for identity -> redirect to login | ||
1310 | if (GNUNET_YES == | ||
1311 | GNUNET_CONTAINER_multihashmap_contains (OIDC_cookie_jar_map, &cache_key)) | ||
1312 | { | ||
1313 | relog_time = | ||
1314 | GNUNET_CONTAINER_multihashmap_get (OIDC_cookie_jar_map, &cache_key); | ||
1315 | current_time = GNUNET_TIME_absolute_get (); | ||
1316 | // 30 min after old login -> redirect to login | ||
1317 | if (current_time.abs_value_us <= relog_time->abs_value_us) | ||
1318 | { | ||
1319 | if (GNUNET_OK != | ||
1320 | GNUNET_IDENTITY_public_key_from_string (handle->oidc | ||
1321 | ->login_identity, | ||
1322 | &pubkey)) | ||
1323 | { | ||
1324 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_COOKIE); | ||
1325 | handle->edesc = | ||
1326 | GNUNET_strdup ("The cookie of a login identity is not valid"); | ||
1327 | GNUNET_SCHEDULER_add_now (&do_redirect_error, handle); | ||
1328 | return; | ||
1329 | } | ||
1330 | // iterate over egos and compare their public key | ||
1331 | for (handle->ego_entry = ego_head; NULL != handle->ego_entry; | ||
1332 | handle->ego_entry = handle->ego_entry->next) | ||
1333 | { | ||
1334 | GNUNET_IDENTITY_ego_get_public_key (handle->ego_entry->ego, &ego_pkey); | ||
1335 | if (0 == GNUNET_memcmp (&ego_pkey, &pubkey)) | ||
1336 | { | ||
1337 | handle->priv_key = | ||
1338 | *GNUNET_IDENTITY_ego_get_private_key (handle->ego_entry->ego); | ||
1339 | handle->attr_idtoken_list = | ||
1340 | GNUNET_new (struct GNUNET_RECLAIM_AttributeList); | ||
1341 | handle->attr_userinfo_list = | ||
1342 | GNUNET_new (struct GNUNET_RECLAIM_AttributeList); | ||
1343 | handle->attr_it = | ||
1344 | GNUNET_RECLAIM_get_attributes_start (idp, | ||
1345 | &handle->priv_key, | ||
1346 | &oidc_iteration_error, | ||
1347 | handle, | ||
1348 | &oidc_attr_collect, | ||
1349 | handle, | ||
1350 | &oidc_attr_collect_finished_cb, | ||
1351 | handle); | ||
1352 | return; | ||
1353 | } | ||
1354 | } | ||
1355 | GNUNET_SCHEDULER_add_now (&login_redirect, handle); | ||
1356 | return; | ||
1357 | } | ||
1358 | } | ||
1359 | } | ||
1360 | |||
1361 | |||
1362 | static void | ||
1363 | build_redirect (void *cls) | ||
1364 | { | ||
1365 | struct RequestHandle *handle = cls; | ||
1366 | struct MHD_Response *resp; | ||
1367 | char *redirect_uri; | ||
1368 | |||
1369 | if (GNUNET_YES == handle->oidc->user_cancelled) | ||
1370 | { | ||
1371 | if ((NULL != handle->redirect_prefix) && | ||
1372 | (NULL != handle->redirect_suffix) && (NULL != handle->tld)) | ||
1373 | { | ||
1374 | GNUNET_asprintf (&redirect_uri, | ||
1375 | "%s.%s/%s?error=%s&error_description=%s&state=%s", | ||
1376 | handle->redirect_prefix, | ||
1377 | handle->tld, | ||
1378 | handle->redirect_suffix, | ||
1379 | "access_denied", | ||
1380 | "User denied access", | ||
1381 | handle->oidc->state); | ||
1382 | } | ||
1383 | else | ||
1384 | { | ||
1385 | GNUNET_asprintf (&redirect_uri, | ||
1386 | "%s?error=%s&error_description=%s&state=%s", | ||
1387 | handle->oidc->redirect_uri, | ||
1388 | "access_denied", | ||
1389 | "User denied access", | ||
1390 | handle->oidc->state); | ||
1391 | } | ||
1392 | resp = GNUNET_REST_create_response (""); | ||
1393 | GNUNET_assert (MHD_NO != MHD_add_response_header (resp, | ||
1394 | "Location", | ||
1395 | redirect_uri)); | ||
1396 | handle->proc (handle->proc_cls, resp, MHD_HTTP_FOUND); | ||
1397 | cleanup_handle (handle); | ||
1398 | GNUNET_free (redirect_uri); | ||
1399 | return; | ||
1400 | } | ||
1401 | GNUNET_SCHEDULER_add_now (&code_redirect, handle); | ||
1402 | } | ||
1403 | |||
1404 | |||
1405 | static void | ||
1406 | lookup_redirect_uri_result (void *cls, | ||
1407 | uint32_t rd_count, | ||
1408 | const struct GNUNET_GNSRECORD_Data *rd) | ||
1409 | { | ||
1410 | struct RequestHandle *handle = cls; | ||
1411 | char *tmp; | ||
1412 | char *tmp_key_str; | ||
1413 | char *pos; | ||
1414 | struct GNUNET_IDENTITY_PublicKey redirect_zone; | ||
1415 | |||
1416 | handle->gns_op = NULL; | ||
1417 | if (0 == rd_count) | ||
1418 | { | ||
1419 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_SERVER_ERROR); | ||
1420 | handle->edesc = | ||
1421 | GNUNET_strdup ("Server cannot generate ticket, redirect uri not found."); | ||
1422 | GNUNET_SCHEDULER_add_now (&do_redirect_error, handle); | ||
1423 | return; | ||
1424 | } | ||
1425 | for (int i = 0; i < rd_count; i++) | ||
1426 | { | ||
1427 | if (GNUNET_GNSRECORD_TYPE_RECLAIM_OIDC_REDIRECT != rd[i].record_type) | ||
1428 | continue; | ||
1429 | if (0 != strncmp (rd[i].data, handle->oidc->redirect_uri, rd[i].data_size)) | ||
1430 | continue; | ||
1431 | tmp = GNUNET_strndup (rd[i].data, rd[i].data_size); | ||
1432 | if (NULL == strstr (tmp, handle->oidc->client_id)) | ||
1433 | { | ||
1434 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
1435 | "Redirect uri %s does not contain client_id %s\n", | ||
1436 | tmp, | ||
1437 | handle->oidc->client_id); | ||
1438 | } | ||
1439 | else | ||
1440 | { | ||
1441 | pos = strrchr (tmp, (unsigned char) '.'); | ||
1442 | if (NULL == pos) | ||
1443 | { | ||
1444 | GNUNET_log (GNUNET_ERROR_TYPE_WARNING, | ||
1445 | "Redirect uri %s contains client_id but is malformed\n", | ||
1446 | tmp); | ||
1447 | GNUNET_free (tmp); | ||
1448 | continue; | ||
1449 | } | ||
1450 | *pos = '\0'; | ||
1451 | handle->redirect_prefix = GNUNET_strdup (tmp); | ||
1452 | tmp_key_str = pos + 1; | ||
1453 | pos = strchr (tmp_key_str, (unsigned char) '/'); | ||
1454 | if (NULL == pos) | ||
1455 | { | ||
1456 | GNUNET_log (GNUNET_ERROR_TYPE_WARNING, | ||
1457 | "Redirect uri %s contains client_id but is malformed\n", | ||
1458 | tmp); | ||
1459 | GNUNET_free (tmp); | ||
1460 | continue; | ||
1461 | } | ||
1462 | *pos = '\0'; | ||
1463 | handle->redirect_suffix = GNUNET_strdup (pos + 1); | ||
1464 | |||
1465 | GNUNET_STRINGS_string_to_data (tmp_key_str, | ||
1466 | strlen (tmp_key_str), | ||
1467 | &redirect_zone, | ||
1468 | sizeof(redirect_zone)); | ||
1469 | } | ||
1470 | GNUNET_SCHEDULER_add_now (&build_redirect, handle); | ||
1471 | GNUNET_free (tmp); | ||
1472 | return; | ||
1473 | } | ||
1474 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_SERVER_ERROR); | ||
1475 | handle->edesc = | ||
1476 | GNUNET_strdup ("Server cannot generate ticket, redirect uri not found."); | ||
1477 | GNUNET_SCHEDULER_add_now (&do_redirect_error, handle); | ||
1478 | } | ||
1479 | |||
1480 | |||
1481 | /** | ||
1482 | * Initiate redirect back to client. | ||
1483 | */ | ||
1484 | static void | ||
1485 | client_redirect (void *cls) | ||
1486 | { | ||
1487 | struct RequestHandle *handle = cls; | ||
1488 | |||
1489 | /* Lookup client redirect uri to verify request */ | ||
1490 | handle->gns_op = | ||
1491 | GNUNET_GNS_lookup (gns_handle, | ||
1492 | GNUNET_GNS_EMPTY_LABEL_AT, | ||
1493 | &handle->oidc->client_pkey, | ||
1494 | GNUNET_GNSRECORD_TYPE_RECLAIM_OIDC_REDIRECT, | ||
1495 | GNUNET_GNS_LO_DEFAULT, | ||
1496 | &lookup_redirect_uri_result, | ||
1497 | handle); | ||
1498 | } | ||
1499 | |||
1500 | |||
1501 | static char * | ||
1502 | get_url_parameter_copy (const struct RequestHandle *handle, const char *key) | ||
1503 | { | ||
1504 | struct GNUNET_HashCode hc; | ||
1505 | char *value; | ||
1506 | char *res; | ||
1507 | |||
1508 | GNUNET_CRYPTO_hash (key, strlen (key), &hc); | ||
1509 | if (GNUNET_YES != GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle | ||
1510 | ->url_param_map, | ||
1511 | &hc)) | ||
1512 | return NULL; | ||
1513 | value = | ||
1514 | GNUNET_CONTAINER_multihashmap_get (handle->rest_handle->url_param_map, &hc); | ||
1515 | if (NULL == value) | ||
1516 | return NULL; | ||
1517 | GNUNET_STRINGS_urldecode (value, strlen (value), &res); | ||
1518 | return res; | ||
1519 | } | ||
1520 | |||
1521 | |||
1522 | /** | ||
1523 | * Iteration over all results finished, build final | ||
1524 | * response. | ||
1525 | * | ||
1526 | * @param cls the `struct RequestHandle` | ||
1527 | */ | ||
1528 | static void | ||
1529 | build_authz_response (void *cls) | ||
1530 | { | ||
1531 | struct RequestHandle *handle = cls; | ||
1532 | struct GNUNET_HashCode cache_key; | ||
1533 | |||
1534 | char *expected_scope; | ||
1535 | char delimiter[] = " "; | ||
1536 | int number_of_ignored_parameter, iterator; | ||
1537 | |||
1538 | |||
1539 | // REQUIRED value: redirect_uri | ||
1540 | handle->oidc->redirect_uri = | ||
1541 | get_url_parameter_copy (handle, OIDC_REDIRECT_URI_KEY); | ||
1542 | if (NULL == handle->oidc->redirect_uri) | ||
1543 | { | ||
1544 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_REQUEST); | ||
1545 | handle->edesc = GNUNET_strdup ("missing parameter redirect_uri"); | ||
1546 | GNUNET_SCHEDULER_add_now (&do_error, handle); | ||
1547 | return; | ||
1548 | } | ||
1549 | |||
1550 | // REQUIRED value: response_type | ||
1551 | handle->oidc->response_type = | ||
1552 | get_url_parameter_copy (handle, OIDC_RESPONSE_TYPE_KEY); | ||
1553 | if (NULL == handle->oidc->response_type) | ||
1554 | { | ||
1555 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_REQUEST); | ||
1556 | handle->edesc = GNUNET_strdup ("missing parameter response_type"); | ||
1557 | GNUNET_SCHEDULER_add_now (&do_redirect_error, handle); | ||
1558 | return; | ||
1559 | } | ||
1560 | |||
1561 | // REQUIRED value: scope | ||
1562 | handle->oidc->scope = get_url_parameter_copy (handle, OIDC_SCOPE_KEY); | ||
1563 | if (NULL == handle->oidc->scope) | ||
1564 | { | ||
1565 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_SCOPE); | ||
1566 | handle->edesc = GNUNET_strdup ("missing parameter scope"); | ||
1567 | GNUNET_SCHEDULER_add_now (&do_redirect_error, handle); | ||
1568 | return; | ||
1569 | } | ||
1570 | |||
1571 | // OPTIONAL value: nonce | ||
1572 | handle->oidc->nonce = get_url_parameter_copy (handle, OIDC_NONCE_KEY); | ||
1573 | |||
1574 | // OPTIONAL value: claims | ||
1575 | handle->oidc->claims = get_url_parameter_copy (handle, OIDC_CLAIMS_KEY); | ||
1576 | |||
1577 | // TODO check other values if needed | ||
1578 | number_of_ignored_parameter = | ||
1579 | sizeof(OIDC_ignored_parameter_array) / sizeof(char *); | ||
1580 | for (iterator = 0; iterator < number_of_ignored_parameter; iterator++) | ||
1581 | { | ||
1582 | GNUNET_CRYPTO_hash (OIDC_ignored_parameter_array[iterator], | ||
1583 | strlen (OIDC_ignored_parameter_array[iterator]), | ||
1584 | &cache_key); | ||
1585 | if (GNUNET_YES == | ||
1586 | GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle | ||
1587 | ->url_param_map, | ||
1588 | &cache_key)) | ||
1589 | { | ||
1590 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_ACCESS_DENIED); | ||
1591 | GNUNET_asprintf (&handle->edesc, | ||
1592 | "Server will not handle parameter: %s", | ||
1593 | OIDC_ignored_parameter_array[iterator]); | ||
1594 | GNUNET_SCHEDULER_add_now (&do_redirect_error, handle); | ||
1595 | return; | ||
1596 | } | ||
1597 | } | ||
1598 | |||
1599 | // We only support authorization code flows. | ||
1600 | if (0 != strcmp (handle->oidc->response_type, | ||
1601 | OIDC_EXPECTED_AUTHORIZATION_RESPONSE_TYPE)) | ||
1602 | { | ||
1603 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_UNSUPPORTED_RESPONSE_TYPE); | ||
1604 | handle->edesc = GNUNET_strdup ("The authorization server does not support " | ||
1605 | "obtaining this authorization code."); | ||
1606 | GNUNET_SCHEDULER_add_now (&do_redirect_error, handle); | ||
1607 | return; | ||
1608 | } | ||
1609 | |||
1610 | // Checks if scope contains 'openid' | ||
1611 | expected_scope = GNUNET_strdup (handle->oidc->scope); | ||
1612 | char *test; | ||
1613 | test = strtok (expected_scope, delimiter); | ||
1614 | while (NULL != test) | ||
1615 | { | ||
1616 | if (0 == strcmp (OIDC_EXPECTED_AUTHORIZATION_SCOPE, expected_scope)) | ||
1617 | break; | ||
1618 | test = strtok (NULL, delimiter); | ||
1619 | } | ||
1620 | if (NULL == test) | ||
1621 | { | ||
1622 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_SCOPE); | ||
1623 | handle->edesc = | ||
1624 | GNUNET_strdup ("The requested scope is invalid, unknown, or malformed."); | ||
1625 | GNUNET_SCHEDULER_add_now (&do_redirect_error, handle); | ||
1626 | GNUNET_free (expected_scope); | ||
1627 | return; | ||
1628 | } | ||
1629 | |||
1630 | GNUNET_free (expected_scope); | ||
1631 | if ((NULL == handle->oidc->login_identity) && | ||
1632 | (GNUNET_NO == handle->oidc->user_cancelled)) | ||
1633 | GNUNET_SCHEDULER_add_now (&login_redirect, handle); | ||
1634 | else | ||
1635 | GNUNET_SCHEDULER_add_now (&client_redirect, handle); | ||
1636 | } | ||
1637 | |||
1638 | |||
1639 | /** | ||
1640 | * Iterate over tlds in config | ||
1641 | */ | ||
1642 | static void | ||
1643 | tld_iter (void *cls, const char *section, const char *option, const char *value) | ||
1644 | { | ||
1645 | struct RequestHandle *handle = cls; | ||
1646 | struct GNUNET_IDENTITY_PublicKey pkey; | ||
1647 | |||
1648 | if (GNUNET_OK != | ||
1649 | GNUNET_IDENTITY_public_key_from_string (value, &pkey)) | ||
1650 | { | ||
1651 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Skipping non key %s\n", value); | ||
1652 | return; | ||
1653 | } | ||
1654 | if (0 == GNUNET_memcmp (&pkey, &handle->oidc->client_pkey)) | ||
1655 | handle->tld = GNUNET_strdup (option + 1); | ||
1656 | } | ||
1657 | |||
1658 | |||
1659 | /** | ||
1660 | * Responds to authorization GET and url-encoded POST request | ||
1661 | * | ||
1662 | * @param con_handle the connection handle | ||
1663 | * @param url the url | ||
1664 | * @param cls the RequestHandle | ||
1665 | */ | ||
1666 | static void | ||
1667 | authorize_endpoint (struct GNUNET_REST_RequestHandle *con_handle, | ||
1668 | const char *url, | ||
1669 | void *cls) | ||
1670 | { | ||
1671 | struct RequestHandle *handle = cls; | ||
1672 | struct EgoEntry *tmp_ego; | ||
1673 | const struct GNUNET_IDENTITY_PrivateKey *priv_key; | ||
1674 | struct GNUNET_IDENTITY_PublicKey pkey; | ||
1675 | |||
1676 | cookie_identity_interpretation (handle); | ||
1677 | |||
1678 | // RECOMMENDED value: state - REQUIRED for answers | ||
1679 | handle->oidc->state = get_url_parameter_copy (handle, OIDC_STATE_KEY); | ||
1680 | |||
1681 | // REQUIRED value: client_id | ||
1682 | handle->oidc->client_id = get_url_parameter_copy (handle, OIDC_CLIENT_ID_KEY); | ||
1683 | if (NULL == handle->oidc->client_id) | ||
1684 | { | ||
1685 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_REQUEST); | ||
1686 | handle->edesc = GNUNET_strdup ("missing parameter client_id"); | ||
1687 | handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR; | ||
1688 | GNUNET_SCHEDULER_add_now (&do_error, handle); | ||
1689 | return; | ||
1690 | } | ||
1691 | |||
1692 | // OPTIONAL value: code_challenge | ||
1693 | handle->oidc->code_challenge = get_url_parameter_copy (handle, | ||
1694 | OIDC_CODE_CHALLENGE_KEY); | ||
1695 | if (NULL == handle->oidc->code_challenge) | ||
1696 | { | ||
1697 | GNUNET_log (GNUNET_ERROR_TYPE_WARNING, | ||
1698 | "OAuth authorization request does not contain PKCE parameters!\n"); | ||
1699 | } | ||
1700 | |||
1701 | if (GNUNET_OK != | ||
1702 | GNUNET_IDENTITY_public_key_from_string (handle->oidc->client_id, | ||
1703 | &handle->oidc->client_pkey)) | ||
1704 | { | ||
1705 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_UNAUTHORIZED_CLIENT); | ||
1706 | handle->edesc = GNUNET_strdup ("The client is not authorized to request an " | ||
1707 | "authorization code using this method."); | ||
1708 | handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR; | ||
1709 | GNUNET_SCHEDULER_add_now (&do_error, handle); | ||
1710 | return; | ||
1711 | } | ||
1712 | |||
1713 | // If we know this identity, translated the corresponding TLD | ||
1714 | // TODO: We might want to have a reverse lookup functionality for TLDs? | ||
1715 | for (tmp_ego = ego_head; NULL != tmp_ego; tmp_ego = tmp_ego->next) | ||
1716 | { | ||
1717 | priv_key = GNUNET_IDENTITY_ego_get_private_key (tmp_ego->ego); | ||
1718 | GNUNET_IDENTITY_key_get_public (priv_key, &pkey); | ||
1719 | if (0 == GNUNET_memcmp (&pkey, &handle->oidc->client_pkey)) | ||
1720 | { | ||
1721 | handle->tld = GNUNET_strdup (tmp_ego->identifier); | ||
1722 | handle->ego_entry = ego_tail; | ||
1723 | } | ||
1724 | } | ||
1725 | if (NULL == handle->tld) | ||
1726 | GNUNET_CONFIGURATION_iterate_section_values (cfg, "gns", tld_iter, handle); | ||
1727 | if (NULL == handle->tld) | ||
1728 | handle->tld = GNUNET_strdup (handle->oidc->client_id); | ||
1729 | GNUNET_SCHEDULER_add_now (&build_authz_response, handle); | ||
1730 | } | ||
1731 | |||
1732 | |||
1733 | /** | ||
1734 | * Combines an identity with a login time and responds OK to login request | ||
1735 | * | ||
1736 | * @param con_handle the connection handle | ||
1737 | * @param url the url | ||
1738 | * @param cls the RequestHandle | ||
1739 | */ | ||
1740 | static void | ||
1741 | login_cont (struct GNUNET_REST_RequestHandle *con_handle, | ||
1742 | const char *url, | ||
1743 | void *cls) | ||
1744 | { | ||
1745 | struct MHD_Response *resp = GNUNET_REST_create_response (""); | ||
1746 | struct RequestHandle *handle = cls; | ||
1747 | struct GNUNET_HashCode cache_key; | ||
1748 | struct GNUNET_TIME_Absolute *current_time; | ||
1749 | struct GNUNET_TIME_Absolute *last_time; | ||
1750 | char *cookie; | ||
1751 | char *header_val; | ||
1752 | json_t *root; | ||
1753 | json_error_t error; | ||
1754 | json_t *identity; | ||
1755 | char term_data[handle->rest_handle->data_size + 1]; | ||
1756 | |||
1757 | term_data[handle->rest_handle->data_size] = '\0'; | ||
1758 | GNUNET_memcpy (term_data, | ||
1759 | handle->rest_handle->data, | ||
1760 | handle->rest_handle->data_size); | ||
1761 | root = json_loads (term_data, JSON_DECODE_ANY, &error); | ||
1762 | identity = json_object_get (root, "identity"); | ||
1763 | if (! json_is_string (identity)) | ||
1764 | { | ||
1765 | GNUNET_log (GNUNET_ERROR_TYPE_ERROR, | ||
1766 | "Error parsing json string from %s\n", | ||
1767 | term_data); | ||
1768 | handle->proc (handle->proc_cls, resp, MHD_HTTP_BAD_REQUEST); | ||
1769 | json_decref (root); | ||
1770 | cleanup_handle (handle); | ||
1771 | return; | ||
1772 | } | ||
1773 | GNUNET_asprintf (&cookie, "Identity=%s", json_string_value (identity)); | ||
1774 | GNUNET_asprintf (&header_val, | ||
1775 | "%s;Max-Age=%d", | ||
1776 | cookie, | ||
1777 | OIDC_COOKIE_EXPIRATION); | ||
1778 | GNUNET_assert (MHD_NO != MHD_add_response_header (resp, | ||
1779 | "Set-Cookie", header_val)); | ||
1780 | GNUNET_assert (MHD_NO != | ||
1781 | MHD_add_response_header (resp, | ||
1782 | "Access-Control-Allow-Methods", | ||
1783 | "POST")); | ||
1784 | GNUNET_CRYPTO_hash (cookie, strlen (cookie), &cache_key); | ||
1785 | |||
1786 | if (0 != strcmp (json_string_value (identity), "Denied")) | ||
1787 | { | ||
1788 | current_time = GNUNET_new (struct GNUNET_TIME_Absolute); | ||
1789 | *current_time = GNUNET_TIME_relative_to_absolute ( | ||
1790 | GNUNET_TIME_relative_multiply (GNUNET_TIME_relative_get_second_ (), | ||
1791 | OIDC_COOKIE_EXPIRATION)); | ||
1792 | last_time = | ||
1793 | GNUNET_CONTAINER_multihashmap_get (OIDC_cookie_jar_map, &cache_key); | ||
1794 | GNUNET_free (last_time); | ||
1795 | GNUNET_CONTAINER_multihashmap_put (OIDC_cookie_jar_map, | ||
1796 | &cache_key, | ||
1797 | current_time, | ||
1798 | GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE); | ||
1799 | } | ||
1800 | handle->proc (handle->proc_cls, resp, MHD_HTTP_OK); | ||
1801 | GNUNET_free (cookie); | ||
1802 | GNUNET_free (header_val); | ||
1803 | json_decref (root); | ||
1804 | cleanup_handle (handle); | ||
1805 | } | ||
1806 | |||
1807 | |||
1808 | static int | ||
1809 | parse_credentials_basic_auth (struct RequestHandle *handle, | ||
1810 | char **client_id, | ||
1811 | char **client_secret) | ||
1812 | { | ||
1813 | struct GNUNET_HashCode cache_key; | ||
1814 | char *authorization; | ||
1815 | char *credentials; | ||
1816 | char *basic_authorization; | ||
1817 | char *client_id_tmp; | ||
1818 | char *pass; | ||
1819 | |||
1820 | GNUNET_CRYPTO_hash (OIDC_AUTHORIZATION_HEADER_KEY, | ||
1821 | strlen (OIDC_AUTHORIZATION_HEADER_KEY), | ||
1822 | &cache_key); | ||
1823 | if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle | ||
1824 | ->header_param_map, | ||
1825 | &cache_key)) | ||
1826 | return GNUNET_SYSERR; | ||
1827 | authorization = | ||
1828 | GNUNET_CONTAINER_multihashmap_get (handle->rest_handle->header_param_map, | ||
1829 | &cache_key); | ||
1830 | |||
1831 | // split header in "Basic" and [content] | ||
1832 | credentials = strtok (authorization, " "); | ||
1833 | if ((NULL == credentials) || (0 != strcmp ("Basic", credentials))) | ||
1834 | return GNUNET_SYSERR; | ||
1835 | credentials = strtok (NULL, " "); | ||
1836 | if (NULL == credentials) | ||
1837 | return GNUNET_SYSERR; | ||
1838 | GNUNET_STRINGS_base64_decode (credentials, | ||
1839 | strlen (credentials), | ||
1840 | (void **) &basic_authorization); | ||
1841 | |||
1842 | if (NULL == basic_authorization) | ||
1843 | return GNUNET_SYSERR; | ||
1844 | client_id_tmp = strtok (basic_authorization, ":"); | ||
1845 | if (NULL == client_id_tmp) | ||
1846 | { | ||
1847 | GNUNET_free (basic_authorization); | ||
1848 | return GNUNET_SYSERR; | ||
1849 | } | ||
1850 | pass = strtok (NULL, ":"); | ||
1851 | if (NULL == pass) | ||
1852 | { | ||
1853 | GNUNET_free (basic_authorization); | ||
1854 | return GNUNET_SYSERR; | ||
1855 | } | ||
1856 | *client_id = strdup (client_id_tmp); | ||
1857 | *client_secret = strdup (pass); | ||
1858 | GNUNET_free (basic_authorization); | ||
1859 | return GNUNET_OK; | ||
1860 | } | ||
1861 | |||
1862 | |||
1863 | static int | ||
1864 | parse_credentials_post_body (struct RequestHandle *handle, | ||
1865 | char **client_id, | ||
1866 | char **client_secret) | ||
1867 | { | ||
1868 | struct GNUNET_HashCode cache_key; | ||
1869 | char *client_id_tmp; | ||
1870 | char *pass; | ||
1871 | |||
1872 | GNUNET_CRYPTO_hash ("client_id", | ||
1873 | strlen ("client_id"), | ||
1874 | &cache_key); | ||
1875 | if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle | ||
1876 | ->url_param_map, | ||
1877 | &cache_key)) | ||
1878 | return GNUNET_SYSERR; | ||
1879 | client_id_tmp = GNUNET_CONTAINER_multihashmap_get ( | ||
1880 | handle->rest_handle->url_param_map, | ||
1881 | &cache_key); | ||
1882 | if (NULL == client_id_tmp) | ||
1883 | return GNUNET_SYSERR; | ||
1884 | *client_id = strdup (client_id_tmp); | ||
1885 | GNUNET_CRYPTO_hash ("client_secret", | ||
1886 | strlen ("client_secret"), | ||
1887 | &cache_key); | ||
1888 | if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle | ||
1889 | ->url_param_map, | ||
1890 | &cache_key)) | ||
1891 | { | ||
1892 | GNUNET_free (*client_id); | ||
1893 | *client_id = NULL; | ||
1894 | return GNUNET_SYSERR; | ||
1895 | } | ||
1896 | pass = GNUNET_CONTAINER_multihashmap_get (handle->rest_handle->url_param_map, | ||
1897 | &cache_key); | ||
1898 | if (NULL == pass) | ||
1899 | { | ||
1900 | GNUNET_free (*client_id); | ||
1901 | *client_id = NULL; | ||
1902 | return GNUNET_SYSERR; | ||
1903 | } | ||
1904 | *client_secret = strdup (pass); | ||
1905 | return GNUNET_OK; | ||
1906 | } | ||
1907 | |||
1908 | |||
1909 | static int | ||
1910 | check_authorization (struct RequestHandle *handle, | ||
1911 | struct GNUNET_IDENTITY_PublicKey *cid) | ||
1912 | { | ||
1913 | char *expected_pass; | ||
1914 | char *received_cid; | ||
1915 | char *received_cpw; | ||
1916 | char *pkce_cv; | ||
1917 | |||
1918 | if (GNUNET_OK == parse_credentials_basic_auth (handle, | ||
1919 | &received_cid, | ||
1920 | &received_cpw)) | ||
1921 | { | ||
1922 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
1923 | "Received client credentials in HTTP AuthZ header\n"); | ||
1924 | } | ||
1925 | else if (GNUNET_OK == parse_credentials_post_body (handle, | ||
1926 | &received_cid, | ||
1927 | &received_cpw)) | ||
1928 | { | ||
1929 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
1930 | "Received client credentials in POST body\n"); | ||
1931 | } | ||
1932 | else | ||
1933 | { | ||
1934 | /** Allow public clients with PKCE **/ | ||
1935 | pkce_cv = get_url_parameter_copy (handle, OIDC_CODE_VERIFIER_KEY); | ||
1936 | if (NULL == pkce_cv) | ||
1937 | { | ||
1938 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_CLIENT); | ||
1939 | handle->response_code = MHD_HTTP_UNAUTHORIZED; | ||
1940 | return GNUNET_SYSERR; | ||
1941 | } | ||
1942 | handle->public_client = GNUNET_YES; | ||
1943 | GNUNET_free (pkce_cv); | ||
1944 | received_cid = get_url_parameter_copy (handle, OIDC_CLIENT_ID_KEY); | ||
1945 | GNUNET_STRINGS_string_to_data (received_cid, | ||
1946 | strlen (received_cid), | ||
1947 | cid, | ||
1948 | sizeof(struct GNUNET_IDENTITY_PublicKey)); | ||
1949 | GNUNET_free (received_cid); | ||
1950 | return GNUNET_OK; | ||
1951 | |||
1952 | } | ||
1953 | |||
1954 | // check client password | ||
1955 | if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (cfg, | ||
1956 | "reclaim-rest-plugin", | ||
1957 | "OIDC_CLIENT_SECRET", | ||
1958 | &expected_pass)) | ||
1959 | { | ||
1960 | if (0 != strcmp (expected_pass, received_cpw)) | ||
1961 | { | ||
1962 | GNUNET_free (expected_pass); | ||
1963 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_CLIENT); | ||
1964 | handle->response_code = MHD_HTTP_UNAUTHORIZED; | ||
1965 | GNUNET_free (received_cpw); | ||
1966 | GNUNET_free (received_cid); | ||
1967 | return GNUNET_SYSERR; | ||
1968 | } | ||
1969 | GNUNET_free (expected_pass); | ||
1970 | } | ||
1971 | else | ||
1972 | { | ||
1973 | GNUNET_free (received_cpw); | ||
1974 | GNUNET_free (received_cid); | ||
1975 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_SERVER_ERROR); | ||
1976 | handle->edesc = GNUNET_strdup ("gnunet configuration failed"); | ||
1977 | handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR; | ||
1978 | return GNUNET_SYSERR; | ||
1979 | } | ||
1980 | // check client_id | ||
1981 | for (handle->ego_entry = ego_head; NULL != handle->ego_entry; | ||
1982 | handle->ego_entry = handle->ego_entry->next) | ||
1983 | { | ||
1984 | if (0 == strcmp (handle->ego_entry->keystring, received_cid)) | ||
1985 | break; | ||
1986 | } | ||
1987 | if (NULL == handle->ego_entry) | ||
1988 | { | ||
1989 | GNUNET_free (received_cpw); | ||
1990 | GNUNET_free (received_cid); | ||
1991 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_CLIENT); | ||
1992 | handle->response_code = MHD_HTTP_UNAUTHORIZED; | ||
1993 | return GNUNET_SYSERR; | ||
1994 | } | ||
1995 | GNUNET_STRINGS_string_to_data (received_cid, | ||
1996 | strlen (received_cid), | ||
1997 | cid, | ||
1998 | sizeof(struct GNUNET_IDENTITY_PublicKey)); | ||
1999 | |||
2000 | GNUNET_free (received_cpw); | ||
2001 | GNUNET_free (received_cid); | ||
2002 | return GNUNET_OK; | ||
2003 | } | ||
2004 | |||
2005 | |||
2006 | const struct EgoEntry * | ||
2007 | find_ego (struct RequestHandle *handle, | ||
2008 | struct GNUNET_IDENTITY_PublicKey *test_key) | ||
2009 | { | ||
2010 | struct EgoEntry *ego_entry; | ||
2011 | struct GNUNET_IDENTITY_PublicKey pub_key; | ||
2012 | |||
2013 | for (ego_entry = ego_head; NULL != ego_entry; | ||
2014 | ego_entry = ego_entry->next) | ||
2015 | { | ||
2016 | GNUNET_IDENTITY_ego_get_public_key (ego_entry->ego, &pub_key); | ||
2017 | if (0 == GNUNET_memcmp (&pub_key, test_key)) | ||
2018 | return ego_entry; | ||
2019 | } | ||
2020 | return NULL; | ||
2021 | } | ||
2022 | |||
2023 | |||
2024 | /** | ||
2025 | * Responds to token url-encoded POST request | ||
2026 | * | ||
2027 | * @param con_handle the connection handle | ||
2028 | * @param url the url | ||
2029 | * @param cls the RequestHandle | ||
2030 | */ | ||
2031 | static void | ||
2032 | token_endpoint (struct GNUNET_REST_RequestHandle *con_handle, | ||
2033 | const char *url, | ||
2034 | void *cls) | ||
2035 | { | ||
2036 | struct RequestHandle *handle = cls; | ||
2037 | const struct EgoEntry *ego_entry; | ||
2038 | struct GNUNET_TIME_Relative expiration_time; | ||
2039 | struct GNUNET_RECLAIM_AttributeList *cl = NULL; | ||
2040 | struct GNUNET_RECLAIM_PresentationList *pl = NULL; | ||
2041 | struct GNUNET_RECLAIM_Ticket ticket; | ||
2042 | struct GNUNET_IDENTITY_PublicKey cid; | ||
2043 | struct GNUNET_HashCode cache_key; | ||
2044 | struct MHD_Response *resp; | ||
2045 | char *grant_type; | ||
2046 | char *code; | ||
2047 | char *json_response; | ||
2048 | char *id_token; | ||
2049 | char *access_token; | ||
2050 | char *jwt_secret; | ||
2051 | char *nonce = NULL; | ||
2052 | char *code_verifier; | ||
2053 | |||
2054 | /* | ||
2055 | * Check Authorization | ||
2056 | */ | ||
2057 | if (GNUNET_SYSERR == check_authorization (handle, &cid)) | ||
2058 | { | ||
2059 | GNUNET_log (GNUNET_ERROR_TYPE_ERROR, | ||
2060 | "OIDC authorization for token endpoint failed\n"); | ||
2061 | GNUNET_SCHEDULER_add_now (&do_error, handle); | ||
2062 | return; | ||
2063 | } | ||
2064 | |||
2065 | /* | ||
2066 | * Check parameter | ||
2067 | */ | ||
2068 | |||
2069 | // TODO Do not allow multiple equal parameter names | ||
2070 | // REQUIRED grant_type | ||
2071 | GNUNET_CRYPTO_hash (OIDC_GRANT_TYPE_KEY, | ||
2072 | strlen (OIDC_GRANT_TYPE_KEY), | ||
2073 | &cache_key); | ||
2074 | grant_type = get_url_parameter_copy (handle, OIDC_GRANT_TYPE_KEY); | ||
2075 | if (NULL == grant_type) | ||
2076 | { | ||
2077 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_REQUEST); | ||
2078 | handle->edesc = GNUNET_strdup ("missing parameter grant_type"); | ||
2079 | handle->response_code = MHD_HTTP_BAD_REQUEST; | ||
2080 | GNUNET_SCHEDULER_add_now (&do_error, handle); | ||
2081 | return; | ||
2082 | } | ||
2083 | |||
2084 | // Check parameter grant_type == "authorization_code" | ||
2085 | if (0 != strcmp (OIDC_GRANT_TYPE_VALUE, grant_type)) | ||
2086 | { | ||
2087 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_UNSUPPORTED_GRANT_TYPE); | ||
2088 | handle->response_code = MHD_HTTP_BAD_REQUEST; | ||
2089 | GNUNET_free (grant_type); | ||
2090 | GNUNET_SCHEDULER_add_now (&do_error, handle); | ||
2091 | return; | ||
2092 | } | ||
2093 | GNUNET_free (grant_type); | ||
2094 | // REQUIRED code | ||
2095 | code = get_url_parameter_copy (handle, OIDC_CODE_KEY); | ||
2096 | if (NULL == code) | ||
2097 | { | ||
2098 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_REQUEST); | ||
2099 | handle->edesc = GNUNET_strdup ("missing parameter code"); | ||
2100 | handle->response_code = MHD_HTTP_BAD_REQUEST; | ||
2101 | GNUNET_SCHEDULER_add_now (&do_error, handle); | ||
2102 | return; | ||
2103 | } | ||
2104 | ego_entry = find_ego (handle, &cid); | ||
2105 | if (NULL == ego_entry) | ||
2106 | { | ||
2107 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_REQUEST); | ||
2108 | handle->edesc = GNUNET_strdup ("Unknown client"); | ||
2109 | handle->response_code = MHD_HTTP_BAD_REQUEST; | ||
2110 | GNUNET_free (code); | ||
2111 | GNUNET_SCHEDULER_add_now (&do_error, handle); | ||
2112 | return; | ||
2113 | } | ||
2114 | |||
2115 | // REQUIRED code verifier | ||
2116 | code_verifier = get_url_parameter_copy (handle, OIDC_CODE_VERIFIER_KEY); | ||
2117 | if (NULL == code_verifier) | ||
2118 | { | ||
2119 | GNUNET_log (GNUNET_ERROR_TYPE_WARNING, | ||
2120 | "OAuth authorization request does not contain PKCE parameters!\n"); | ||
2121 | |||
2122 | } | ||
2123 | |||
2124 | // decode code | ||
2125 | if (GNUNET_OK != OIDC_parse_authz_code (&cid, code, code_verifier, &ticket, | ||
2126 | &cl, &pl, &nonce, | ||
2127 | OIDC_VERIFICATION_DEFAULT)) | ||
2128 | { | ||
2129 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_REQUEST); | ||
2130 | handle->edesc = GNUNET_strdup ("invalid code"); | ||
2131 | handle->response_code = MHD_HTTP_BAD_REQUEST; | ||
2132 | GNUNET_free (code); | ||
2133 | if (NULL != code_verifier) | ||
2134 | GNUNET_free (code_verifier); | ||
2135 | GNUNET_SCHEDULER_add_now (&do_error, handle); | ||
2136 | return; | ||
2137 | } | ||
2138 | if (NULL != code_verifier) | ||
2139 | GNUNET_free (code_verifier); | ||
2140 | |||
2141 | // create jwt | ||
2142 | if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_time (cfg, | ||
2143 | "reclaim-rest-plugin", | ||
2144 | "expiration_time", | ||
2145 | &expiration_time)) | ||
2146 | { | ||
2147 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_SERVER_ERROR); | ||
2148 | handle->edesc = GNUNET_strdup ("gnunet configuration failed"); | ||
2149 | handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR; | ||
2150 | GNUNET_free (code); | ||
2151 | if (NULL != nonce) | ||
2152 | GNUNET_free (nonce); | ||
2153 | GNUNET_RECLAIM_attribute_list_destroy (cl); | ||
2154 | GNUNET_RECLAIM_presentation_list_destroy (pl); | ||
2155 | GNUNET_SCHEDULER_add_now (&do_error, handle); | ||
2156 | return; | ||
2157 | } | ||
2158 | |||
2159 | |||
2160 | // TODO OPTIONAL acr,amr,azp | ||
2161 | if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_string (cfg, | ||
2162 | "reclaim-rest-plugin", | ||
2163 | "jwt_secret", | ||
2164 | &jwt_secret)) | ||
2165 | { | ||
2166 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_REQUEST); | ||
2167 | handle->edesc = GNUNET_strdup ("No signing secret configured!"); | ||
2168 | handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR; | ||
2169 | GNUNET_free (code); | ||
2170 | GNUNET_RECLAIM_attribute_list_destroy (cl); | ||
2171 | GNUNET_RECLAIM_presentation_list_destroy (pl); | ||
2172 | if (NULL != nonce) | ||
2173 | GNUNET_free (nonce); | ||
2174 | GNUNET_SCHEDULER_add_now (&do_error, handle); | ||
2175 | return; | ||
2176 | } | ||
2177 | id_token = OIDC_generate_id_token (&ticket.audience, | ||
2178 | &ticket.identity, | ||
2179 | cl, | ||
2180 | pl, | ||
2181 | &expiration_time, | ||
2182 | (NULL != nonce) ? nonce : NULL, | ||
2183 | jwt_secret); | ||
2184 | GNUNET_free (jwt_secret); | ||
2185 | if (NULL != nonce) | ||
2186 | GNUNET_free (nonce); | ||
2187 | access_token = OIDC_access_token_new (&ticket); | ||
2188 | /* Store mapping from access token to code so we can later | ||
2189 | * fall back on the provided attributes in userinfo | ||
2190 | */ | ||
2191 | GNUNET_CRYPTO_hash (access_token, | ||
2192 | strlen (access_token), | ||
2193 | &cache_key); | ||
2194 | char *tmp_at = GNUNET_CONTAINER_multihashmap_get (oidc_code_cache, | ||
2195 | &cache_key); | ||
2196 | GNUNET_CONTAINER_multihashmap_put (oidc_code_cache, | ||
2197 | &cache_key, | ||
2198 | code, | ||
2199 | GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE); | ||
2200 | /* If there was a previous code in there, free the old value */ | ||
2201 | if (NULL != tmp_at) | ||
2202 | { | ||
2203 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
2204 | "OIDC access token already issued. Cleanup.\n"); | ||
2205 | GNUNET_free (tmp_at); | ||
2206 | } | ||
2207 | |||
2208 | OIDC_build_token_response (access_token, | ||
2209 | id_token, | ||
2210 | &expiration_time, | ||
2211 | &json_response); | ||
2212 | |||
2213 | resp = GNUNET_REST_create_response (json_response); | ||
2214 | GNUNET_assert (MHD_NO != MHD_add_response_header (resp, | ||
2215 | "Cache-Control", | ||
2216 | "no-store")); | ||
2217 | GNUNET_assert (MHD_NO != MHD_add_response_header (resp, | ||
2218 | "Pragma", "no-cache")); | ||
2219 | GNUNET_assert (MHD_NO != MHD_add_response_header (resp, | ||
2220 | "Content-Type", | ||
2221 | "application/json")); | ||
2222 | handle->proc (handle->proc_cls, resp, MHD_HTTP_OK); | ||
2223 | GNUNET_RECLAIM_attribute_list_destroy (cl); | ||
2224 | GNUNET_RECLAIM_presentation_list_destroy (pl); | ||
2225 | GNUNET_free (access_token); | ||
2226 | GNUNET_free (json_response); | ||
2227 | GNUNET_free (id_token); | ||
2228 | cleanup_handle (handle); | ||
2229 | } | ||
2230 | |||
2231 | |||
2232 | /** | ||
2233 | * Collects claims and stores them in handle | ||
2234 | */ | ||
2235 | static void | ||
2236 | consume_ticket (void *cls, | ||
2237 | const struct GNUNET_IDENTITY_PublicKey *identity, | ||
2238 | const struct GNUNET_RECLAIM_Attribute *attr, | ||
2239 | const struct GNUNET_RECLAIM_Presentation *presentation) | ||
2240 | { | ||
2241 | struct RequestHandle *handle = cls; | ||
2242 | struct GNUNET_RECLAIM_AttributeListEntry *ale; | ||
2243 | struct GNUNET_RECLAIM_PresentationListEntry *atle; | ||
2244 | struct MHD_Response *resp; | ||
2245 | char *result_str; | ||
2246 | |||
2247 | if (NULL != handle->consume_timeout_op) | ||
2248 | GNUNET_SCHEDULER_cancel (handle->consume_timeout_op); | ||
2249 | handle->consume_timeout_op = NULL; | ||
2250 | handle->idp_op = NULL; | ||
2251 | |||
2252 | if (NULL == identity) | ||
2253 | { | ||
2254 | result_str = OIDC_generate_userinfo (&handle->ticket.identity, | ||
2255 | handle->attr_userinfo_list, | ||
2256 | handle->presentations); | ||
2257 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Userinfo: %s\n", result_str); | ||
2258 | resp = GNUNET_REST_create_response (result_str); | ||
2259 | handle->proc (handle->proc_cls, resp, MHD_HTTP_OK); | ||
2260 | GNUNET_free (result_str); | ||
2261 | cleanup_handle (handle); | ||
2262 | return; | ||
2263 | } | ||
2264 | ale = GNUNET_new (struct GNUNET_RECLAIM_AttributeListEntry); | ||
2265 | ale->attribute = GNUNET_RECLAIM_attribute_new (attr->name, | ||
2266 | &attr->credential, | ||
2267 | attr->type, | ||
2268 | attr->data, | ||
2269 | attr->data_size); | ||
2270 | ale->attribute->id = attr->id; | ||
2271 | ale->attribute->flag = attr->flag; | ||
2272 | ale->attribute->credential = attr->credential; | ||
2273 | GNUNET_CONTAINER_DLL_insert (handle->attr_userinfo_list->list_head, | ||
2274 | handle->attr_userinfo_list->list_tail, | ||
2275 | ale); | ||
2276 | if (NULL == presentation) | ||
2277 | return; | ||
2278 | for (atle = handle->presentations->list_head; | ||
2279 | NULL != atle; atle = atle->next) | ||
2280 | { | ||
2281 | if (GNUNET_NO == GNUNET_RECLAIM_id_is_equal ( | ||
2282 | &atle->presentation->credential_id, | ||
2283 | &presentation->credential_id)) | ||
2284 | continue; | ||
2285 | break; /** already in list **/ | ||
2286 | } | ||
2287 | if (NULL == atle) | ||
2288 | { | ||
2289 | /** Credential matches for attribute, add **/ | ||
2290 | atle = GNUNET_new (struct GNUNET_RECLAIM_PresentationListEntry); | ||
2291 | atle->presentation = GNUNET_RECLAIM_presentation_new (presentation->type, | ||
2292 | presentation->data, | ||
2293 | presentation-> | ||
2294 | data_size); | ||
2295 | atle->presentation->credential_id = presentation->credential_id; | ||
2296 | GNUNET_CONTAINER_DLL_insert (handle->presentations->list_head, | ||
2297 | handle->presentations->list_tail, | ||
2298 | atle); | ||
2299 | } | ||
2300 | } | ||
2301 | |||
2302 | |||
2303 | static void | ||
2304 | consume_timeout (void*cls) | ||
2305 | { | ||
2306 | struct RequestHandle *handle = cls; | ||
2307 | struct GNUNET_HashCode cache_key; | ||
2308 | struct GNUNET_RECLAIM_AttributeList *cl = NULL; | ||
2309 | struct GNUNET_RECLAIM_PresentationList *pl = NULL; | ||
2310 | struct GNUNET_RECLAIM_Ticket ticket; | ||
2311 | char *nonce; | ||
2312 | char *cached_code; | ||
2313 | |||
2314 | handle->consume_timeout_op = NULL; | ||
2315 | if (NULL != handle->idp_op) | ||
2316 | GNUNET_RECLAIM_cancel (handle->idp_op); | ||
2317 | handle->idp_op = NULL; | ||
2318 | |||
2319 | GNUNET_log (GNUNET_ERROR_TYPE_WARNING, | ||
2320 | "Ticket consumptioned timed out. Using cache...\n"); | ||
2321 | GNUNET_CRYPTO_hash (handle->access_token, | ||
2322 | strlen (handle->access_token), | ||
2323 | &cache_key); | ||
2324 | cached_code = GNUNET_CONTAINER_multihashmap_get (oidc_code_cache, | ||
2325 | &cache_key); | ||
2326 | if (NULL == cached_code) | ||
2327 | { | ||
2328 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_TOKEN); | ||
2329 | handle->edesc = GNUNET_strdup ("No Access Token in cache!"); | ||
2330 | handle->response_code = MHD_HTTP_UNAUTHORIZED; | ||
2331 | GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle); | ||
2332 | return; | ||
2333 | } | ||
2334 | |||
2335 | // decode code | ||
2336 | if (GNUNET_OK != OIDC_parse_authz_code (&handle->ticket.audience, | ||
2337 | cached_code, NULL, &ticket, | ||
2338 | &cl, &pl, &nonce, | ||
2339 | OIDC_VERIFICATION_NO_CODE_VERIFIER)) | ||
2340 | { | ||
2341 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_REQUEST); | ||
2342 | handle->edesc = GNUNET_strdup ("invalid code"); | ||
2343 | handle->response_code = MHD_HTTP_BAD_REQUEST; | ||
2344 | GNUNET_free (cached_code); | ||
2345 | if (NULL != nonce) | ||
2346 | GNUNET_free (nonce); | ||
2347 | GNUNET_SCHEDULER_add_now (&do_error, handle); | ||
2348 | return; | ||
2349 | } | ||
2350 | |||
2351 | struct MHD_Response *resp; | ||
2352 | char *result_str; | ||
2353 | |||
2354 | result_str = OIDC_generate_userinfo (&handle->ticket.identity, | ||
2355 | cl, | ||
2356 | pl); | ||
2357 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Userinfo: %s\n", result_str); | ||
2358 | resp = GNUNET_REST_create_response (result_str); | ||
2359 | handle->proc (handle->proc_cls, resp, MHD_HTTP_OK); | ||
2360 | GNUNET_free (result_str); | ||
2361 | GNUNET_free (nonce); | ||
2362 | GNUNET_RECLAIM_attribute_list_destroy (cl); | ||
2363 | GNUNET_RECLAIM_presentation_list_destroy (pl); | ||
2364 | cleanup_handle (handle); | ||
2365 | } | ||
2366 | |||
2367 | |||
2368 | /** | ||
2369 | * Responds to userinfo GET and url-encoded POST request | ||
2370 | * | ||
2371 | * @param con_handle the connection handle | ||
2372 | * @param url the url | ||
2373 | * @param cls the RequestHandle | ||
2374 | */ | ||
2375 | static void | ||
2376 | userinfo_endpoint (struct GNUNET_REST_RequestHandle *con_handle, | ||
2377 | const char *url, | ||
2378 | void *cls) | ||
2379 | { | ||
2380 | // TODO expiration time | ||
2381 | struct RequestHandle *handle = cls; | ||
2382 | struct GNUNET_RECLAIM_Ticket *ticket; | ||
2383 | char delimiter[] = " "; | ||
2384 | struct GNUNET_HashCode cache_key; | ||
2385 | char *authorization; | ||
2386 | char *authorization_type; | ||
2387 | char *authorization_access_token; | ||
2388 | const struct EgoEntry *aud_ego; | ||
2389 | const struct GNUNET_IDENTITY_PrivateKey *privkey; | ||
2390 | |||
2391 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Getting userinfo\n"); | ||
2392 | GNUNET_CRYPTO_hash (OIDC_AUTHORIZATION_HEADER_KEY, | ||
2393 | strlen (OIDC_AUTHORIZATION_HEADER_KEY), | ||
2394 | &cache_key); | ||
2395 | if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle | ||
2396 | ->header_param_map, | ||
2397 | &cache_key)) | ||
2398 | { | ||
2399 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_TOKEN); | ||
2400 | handle->edesc = GNUNET_strdup ("No Access Token"); | ||
2401 | handle->response_code = MHD_HTTP_UNAUTHORIZED; | ||
2402 | GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle); | ||
2403 | return; | ||
2404 | } | ||
2405 | authorization = | ||
2406 | GNUNET_CONTAINER_multihashmap_get (handle->rest_handle->header_param_map, | ||
2407 | &cache_key); | ||
2408 | |||
2409 | // split header in "Bearer" and access_token | ||
2410 | authorization = GNUNET_strdup (authorization); | ||
2411 | authorization_type = strtok (authorization, delimiter); | ||
2412 | if ((NULL == authorization_type) || | ||
2413 | (0 != strcmp ("Bearer", authorization_type))) | ||
2414 | { | ||
2415 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_TOKEN); | ||
2416 | handle->edesc = GNUNET_strdup ("No Access Token"); | ||
2417 | handle->response_code = MHD_HTTP_UNAUTHORIZED; | ||
2418 | GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle); | ||
2419 | GNUNET_free (authorization); | ||
2420 | return; | ||
2421 | } | ||
2422 | authorization_access_token = strtok (NULL, delimiter); | ||
2423 | if (NULL == authorization_access_token) | ||
2424 | { | ||
2425 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_TOKEN); | ||
2426 | handle->edesc = GNUNET_strdup ("Access token missing"); | ||
2427 | handle->response_code = MHD_HTTP_UNAUTHORIZED; | ||
2428 | GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle); | ||
2429 | GNUNET_free (authorization); | ||
2430 | return; | ||
2431 | } | ||
2432 | |||
2433 | if (GNUNET_OK != OIDC_access_token_parse (authorization_access_token, | ||
2434 | &ticket)) | ||
2435 | { | ||
2436 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_TOKEN); | ||
2437 | handle->edesc = GNUNET_strdup ("The access token is invalid"); | ||
2438 | handle->response_code = MHD_HTTP_UNAUTHORIZED; | ||
2439 | GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle); | ||
2440 | GNUNET_free (authorization); | ||
2441 | return; | ||
2442 | |||
2443 | } | ||
2444 | GNUNET_assert (NULL != ticket); | ||
2445 | handle->ticket = *ticket; | ||
2446 | GNUNET_free (ticket); | ||
2447 | aud_ego = find_ego (handle, &handle->ticket.audience); | ||
2448 | if (NULL == aud_ego) | ||
2449 | { | ||
2450 | handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_TOKEN); | ||
2451 | handle->edesc = GNUNET_strdup ("The access token expired"); | ||
2452 | handle->response_code = MHD_HTTP_UNAUTHORIZED; | ||
2453 | GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle); | ||
2454 | GNUNET_free (authorization); | ||
2455 | return; | ||
2456 | } | ||
2457 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Consuming ticket\n"); | ||
2458 | privkey = GNUNET_IDENTITY_ego_get_private_key (aud_ego->ego); | ||
2459 | handle->attr_userinfo_list = | ||
2460 | GNUNET_new (struct GNUNET_RECLAIM_AttributeList); | ||
2461 | handle->presentations = | ||
2462 | GNUNET_new (struct GNUNET_RECLAIM_PresentationList); | ||
2463 | |||
2464 | /* If the consume takes too long, we use values from the cache */ | ||
2465 | handle->access_token = GNUNET_strdup (authorization_access_token); | ||
2466 | handle->consume_timeout_op = GNUNET_SCHEDULER_add_delayed (CONSUME_TIMEOUT, | ||
2467 | &consume_timeout, | ||
2468 | handle); | ||
2469 | handle->idp_op = GNUNET_RECLAIM_ticket_consume (idp, | ||
2470 | privkey, | ||
2471 | &handle->ticket, | ||
2472 | &consume_ticket, | ||
2473 | handle); | ||
2474 | GNUNET_free (authorization); | ||
2475 | } | ||
2476 | |||
2477 | |||
2478 | /** | ||
2479 | * If listing is enabled, prints information about the egos. | ||
2480 | * | ||
2481 | * This function is initially called for all egos and then again | ||
2482 | * whenever a ego's identifier changes or if it is deleted. At the | ||
2483 | * end of the initial pass over all egos, the function is once called | ||
2484 | * with 'NULL' for 'ego'. That does NOT mean that the callback won't | ||
2485 | * be invoked in the future or that there was an error. | ||
2486 | * | ||
2487 | * When used with 'GNUNET_IDENTITY_create' or 'GNUNET_IDENTITY_get', this | ||
2488 | * function is only called ONCE, and 'NULL' being passed in 'ego' does | ||
2489 | * indicate an error (for example because name is taken or no default value is | ||
2490 | * known). If 'ego' is non-NULL and if '*ctx' is set in those callbacks, the | ||
2491 | * value WILL be passed to a subsequent call to the identity callback of | ||
2492 | * 'GNUNET_IDENTITY_connect' (if that one was not NULL). | ||
2493 | * | ||
2494 | * When an identity is renamed, this function is called with the | ||
2495 | * (known) ego but the NEW identifier. | ||
2496 | * | ||
2497 | * When an identity is deleted, this function is called with the | ||
2498 | * (known) ego and "NULL" for the 'identifier'. In this case, | ||
2499 | * the 'ego' is henceforth invalid (and the 'ctx' should also be | ||
2500 | * cleaned up). | ||
2501 | * | ||
2502 | * @param cls closure | ||
2503 | * @param ego ego handle | ||
2504 | * @param ctx context for application to store data for this ego | ||
2505 | * (during the lifetime of this process, initially NULL) | ||
2506 | * @param identifier identifier assigned by the user for this ego, | ||
2507 | * NULL if the user just deleted the ego and it | ||
2508 | * must thus no longer be used | ||
2509 | */ | ||
2510 | static void | ||
2511 | list_ego (void *cls, | ||
2512 | struct GNUNET_IDENTITY_Ego *ego, | ||
2513 | void **ctx, | ||
2514 | const char *identifier) | ||
2515 | { | ||
2516 | struct EgoEntry *ego_entry; | ||
2517 | struct GNUNET_IDENTITY_PublicKey pk; | ||
2518 | |||
2519 | if (NULL == ego) | ||
2520 | { | ||
2521 | state = ID_REST_STATE_POST_INIT; | ||
2522 | return; | ||
2523 | } | ||
2524 | if (ID_REST_STATE_INIT == state) | ||
2525 | |||
2526 | { | ||
2527 | ego_entry = GNUNET_new (struct EgoEntry); | ||
2528 | GNUNET_IDENTITY_ego_get_public_key (ego, &pk); | ||
2529 | ego_entry->keystring = GNUNET_IDENTITY_public_key_to_string (&pk); | ||
2530 | ego_entry->ego = ego; | ||
2531 | ego_entry->identifier = GNUNET_strdup (identifier); | ||
2532 | GNUNET_CONTAINER_DLL_insert_tail (ego_head, | ||
2533 | ego_tail, | ||
2534 | ego_entry); | ||
2535 | return; | ||
2536 | } | ||
2537 | /* Ego renamed or added */ | ||
2538 | if (identifier != NULL) | ||
2539 | { | ||
2540 | for (ego_entry = ego_head; NULL != ego_entry; | ||
2541 | ego_entry = ego_entry->next) | ||
2542 | { | ||
2543 | if (ego_entry->ego == ego) | ||
2544 | { | ||
2545 | /* Rename */ | ||
2546 | GNUNET_free (ego_entry->identifier); | ||
2547 | ego_entry->identifier = GNUNET_strdup (identifier); | ||
2548 | break; | ||
2549 | } | ||
2550 | } | ||
2551 | if (NULL == ego_entry) | ||
2552 | { | ||
2553 | /* Add */ | ||
2554 | ego_entry = GNUNET_new (struct EgoEntry); | ||
2555 | GNUNET_IDENTITY_ego_get_public_key (ego, &pk); | ||
2556 | ego_entry->keystring = GNUNET_IDENTITY_public_key_to_string (&pk); | ||
2557 | ego_entry->ego = ego; | ||
2558 | ego_entry->identifier = GNUNET_strdup (identifier); | ||
2559 | GNUNET_CONTAINER_DLL_insert_tail (ego_head, | ||
2560 | ego_tail, | ||
2561 | ego_entry); | ||
2562 | } | ||
2563 | } | ||
2564 | else | ||
2565 | { | ||
2566 | /* Delete */ | ||
2567 | for (ego_entry = ego_head; NULL != ego_entry; | ||
2568 | ego_entry = ego_entry->next) | ||
2569 | { | ||
2570 | if (ego_entry->ego == ego) | ||
2571 | break; | ||
2572 | } | ||
2573 | if (NULL == ego_entry) | ||
2574 | return; /* Not found */ | ||
2575 | |||
2576 | GNUNET_CONTAINER_DLL_remove (ego_head, | ||
2577 | ego_tail, | ||
2578 | ego_entry); | ||
2579 | GNUNET_free (ego_entry->identifier); | ||
2580 | GNUNET_free (ego_entry->keystring); | ||
2581 | GNUNET_free (ego_entry); | ||
2582 | return; | ||
2583 | } | ||
2584 | } | ||
2585 | |||
2586 | |||
2587 | static void | ||
2588 | oidc_config_endpoint (struct GNUNET_REST_RequestHandle *con_handle, | ||
2589 | const char *url, | ||
2590 | void *cls) | ||
2591 | { | ||
2592 | json_t *oidc_config; | ||
2593 | json_t *auth_methods; | ||
2594 | json_t *sig_algs; | ||
2595 | json_t *scopes; | ||
2596 | json_t *response_types; | ||
2597 | json_t *sub_types; | ||
2598 | json_t *claim_types; | ||
2599 | char *oidc_config_str; | ||
2600 | struct MHD_Response *resp; | ||
2601 | struct RequestHandle *handle = cls; | ||
2602 | |||
2603 | oidc_config = json_object (); | ||
2604 | // FIXME get from config? | ||
2605 | json_object_set_new (oidc_config, | ||
2606 | "issuer", json_string ("http://localhost:7776")); | ||
2607 | json_object_set_new (oidc_config, | ||
2608 | "authorization_endpoint", | ||
2609 | json_string ("https://api.reclaim/openid/authorize")); | ||
2610 | json_object_set_new (oidc_config, | ||
2611 | "token_endpoint", | ||
2612 | json_string ("http://localhost:7776/openid/token")); | ||
2613 | auth_methods = json_array (); | ||
2614 | json_array_append_new (auth_methods, | ||
2615 | json_string ("client_secret_basic")); | ||
2616 | json_array_append_new (auth_methods, | ||
2617 | json_string ("client_secret_post")); | ||
2618 | json_object_set_new (oidc_config, | ||
2619 | "token_endpoint_auth_methods_supported", | ||
2620 | auth_methods); | ||
2621 | sig_algs = json_array (); | ||
2622 | json_array_append_new (sig_algs, | ||
2623 | json_string ("HS512")); | ||
2624 | json_object_set_new (oidc_config, | ||
2625 | "id_token_signing_alg_values_supported", | ||
2626 | sig_algs); | ||
2627 | json_object_set_new (oidc_config, | ||
2628 | "userinfo_endpoint", | ||
2629 | json_string ("http://localhost:7776/openid/userinfo")); | ||
2630 | scopes = json_array (); | ||
2631 | json_array_append_new (scopes, | ||
2632 | json_string ("openid")); | ||
2633 | json_array_append_new (scopes, | ||
2634 | json_string ("profile")); | ||
2635 | json_array_append_new (scopes, | ||
2636 | json_string ("email")); | ||
2637 | json_array_append_new (scopes, | ||
2638 | json_string ("address")); | ||
2639 | json_array_append_new (scopes, | ||
2640 | json_string ("phone")); | ||
2641 | json_object_set_new (oidc_config, | ||
2642 | "scopes_supported", | ||
2643 | scopes); | ||
2644 | response_types = json_array (); | ||
2645 | json_array_append_new (response_types, | ||
2646 | json_string ("code")); | ||
2647 | json_object_set_new (oidc_config, | ||
2648 | "response_types_supported", | ||
2649 | response_types); | ||
2650 | sub_types = json_array (); | ||
2651 | json_array_append_new (sub_types, | ||
2652 | json_string ("public")); /* no pairwise support */ | ||
2653 | json_object_set_new (oidc_config, | ||
2654 | "subject_types_supported", | ||
2655 | sub_types); | ||
2656 | claim_types = json_array (); | ||
2657 | json_array_append_new (claim_types, | ||
2658 | json_string ("normal")); | ||
2659 | json_array_append_new (claim_types, | ||
2660 | json_string ("aggregated")); | ||
2661 | json_object_set_new (oidc_config, | ||
2662 | "claim_types_supported", | ||
2663 | claim_types); | ||
2664 | json_object_set_new (oidc_config, | ||
2665 | "claims_parameter_supported", | ||
2666 | json_boolean (1)); | ||
2667 | oidc_config_str = json_dumps (oidc_config, JSON_INDENT (1)); | ||
2668 | resp = GNUNET_REST_create_response (oidc_config_str); | ||
2669 | handle->proc (handle->proc_cls, resp, MHD_HTTP_OK); | ||
2670 | json_decref (oidc_config); | ||
2671 | GNUNET_free (oidc_config_str); | ||
2672 | cleanup_handle (handle); | ||
2673 | } | ||
2674 | |||
2675 | |||
2676 | /** | ||
2677 | * Respond to OPTIONS request | ||
2678 | * | ||
2679 | * @param con_handle the connection handle | ||
2680 | * @param url the url | ||
2681 | * @param cls the RequestHandle | ||
2682 | */ | ||
2683 | static void | ||
2684 | oidc_config_cors (struct GNUNET_REST_RequestHandle *con_handle, | ||
2685 | const char *url, | ||
2686 | void *cls) | ||
2687 | { | ||
2688 | struct MHD_Response *resp; | ||
2689 | struct RequestHandle *handle = cls; | ||
2690 | |||
2691 | // For now, independent of path return all options | ||
2692 | resp = GNUNET_REST_create_response (NULL); | ||
2693 | GNUNET_assert (MHD_NO != | ||
2694 | MHD_add_response_header (resp, | ||
2695 | "Access-Control-Allow-Methods", | ||
2696 | allow_methods)); | ||
2697 | GNUNET_assert (MHD_NO != | ||
2698 | MHD_add_response_header (resp, | ||
2699 | "Access-Control-Allow-Origin", | ||
2700 | "*")); | ||
2701 | handle->proc (handle->proc_cls, resp, MHD_HTTP_OK); | ||
2702 | cleanup_handle (handle); | ||
2703 | return; | ||
2704 | } | ||
2705 | |||
2706 | |||
2707 | static enum GNUNET_GenericReturnValue | ||
2708 | rest_identity_process_request (struct GNUNET_REST_RequestHandle *rest_handle, | ||
2709 | GNUNET_REST_ResultProcessor proc, | ||
2710 | void *proc_cls) | ||
2711 | { | ||
2712 | struct RequestHandle *handle = GNUNET_new (struct RequestHandle); | ||
2713 | struct GNUNET_REST_RequestHandlerError err; | ||
2714 | static const struct GNUNET_REST_RequestHandler handlers[] = | ||
2715 | { { MHD_HTTP_METHOD_GET, GNUNET_REST_API_NS_AUTHORIZE, &authorize_endpoint }, | ||
2716 | { MHD_HTTP_METHOD_POST, | ||
2717 | GNUNET_REST_API_NS_AUTHORIZE, &authorize_endpoint }, // url-encoded | ||
2718 | { MHD_HTTP_METHOD_POST, GNUNET_REST_API_NS_LOGIN, &login_cont }, | ||
2719 | { MHD_HTTP_METHOD_POST, GNUNET_REST_API_NS_TOKEN, &token_endpoint }, | ||
2720 | { MHD_HTTP_METHOD_GET, GNUNET_REST_API_NS_USERINFO, &userinfo_endpoint }, | ||
2721 | { MHD_HTTP_METHOD_POST, GNUNET_REST_API_NS_USERINFO, &userinfo_endpoint }, | ||
2722 | { MHD_HTTP_METHOD_GET, GNUNET_REST_API_NS_OIDC_CONFIG, | ||
2723 | &oidc_config_endpoint }, | ||
2724 | { MHD_HTTP_METHOD_OPTIONS, GNUNET_REST_API_NS_OIDC_CONFIG, | ||
2725 | &oidc_config_cors }, | ||
2726 | { MHD_HTTP_METHOD_OPTIONS, GNUNET_REST_API_NS_OIDC, &options_cont }, | ||
2727 | GNUNET_REST_HANDLER_END }; | ||
2728 | |||
2729 | handle->oidc = GNUNET_new (struct OIDC_Variables); | ||
2730 | if (NULL == OIDC_cookie_jar_map) | ||
2731 | OIDC_cookie_jar_map = GNUNET_CONTAINER_multihashmap_create (10, | ||
2732 | GNUNET_NO); | ||
2733 | if (NULL == oidc_code_cache) | ||
2734 | oidc_code_cache = GNUNET_CONTAINER_multihashmap_create (10, | ||
2735 | GNUNET_NO); | ||
2736 | |||
2737 | handle->response_code = 0; | ||
2738 | handle->timeout = GNUNET_TIME_UNIT_FOREVER_REL; | ||
2739 | handle->proc_cls = proc_cls; | ||
2740 | handle->proc = proc; | ||
2741 | handle->rest_handle = rest_handle; | ||
2742 | handle->url = GNUNET_strdup (rest_handle->url); | ||
2743 | handle->timeout_task = | ||
2744 | GNUNET_SCHEDULER_add_delayed (handle->timeout, &do_timeout, handle); | ||
2745 | GNUNET_CONTAINER_DLL_insert (requests_head, | ||
2746 | requests_tail, | ||
2747 | handle); | ||
2748 | if (handle->url[strlen (handle->url) - 1] == '/') | ||
2749 | handle->url[strlen (handle->url) - 1] = '\0'; | ||
2750 | if (GNUNET_NO == | ||
2751 | GNUNET_REST_handle_request (handle->rest_handle, handlers, &err, handle)) | ||
2752 | return GNUNET_NO; | ||
2753 | |||
2754 | return GNUNET_YES; | ||
2755 | } | ||
2756 | |||
2757 | |||
2758 | /** | ||
2759 | * Entry point for the plugin. | ||
2760 | * | ||
2761 | * @param cls Config info | ||
2762 | * @return NULL on error, otherwise the plugin context | ||
2763 | */ | ||
2764 | void * | ||
2765 | libgnunet_plugin_rest_openid_connect_init (void *cls) | ||
2766 | { | ||
2767 | static struct Plugin plugin; | ||
2768 | struct GNUNET_REST_Plugin *api; | ||
2769 | |||
2770 | cfg = cls; | ||
2771 | if (NULL != plugin.cfg) | ||
2772 | return NULL; /* can only initialize once! */ | ||
2773 | memset (&plugin, 0, sizeof(struct Plugin)); | ||
2774 | plugin.cfg = cfg; | ||
2775 | api = GNUNET_new (struct GNUNET_REST_Plugin); | ||
2776 | api->cls = &plugin; | ||
2777 | api->name = GNUNET_REST_API_NS_OIDC; | ||
2778 | api->process_request = &rest_identity_process_request; | ||
2779 | identity_handle = GNUNET_IDENTITY_connect (cfg, &list_ego, NULL); | ||
2780 | gns_handle = GNUNET_GNS_connect (cfg); | ||
2781 | idp = GNUNET_RECLAIM_connect (cfg); | ||
2782 | |||
2783 | state = ID_REST_STATE_INIT; | ||
2784 | GNUNET_asprintf (&allow_methods, | ||
2785 | "%s, %s, %s, %s, %s", | ||
2786 | MHD_HTTP_METHOD_GET, | ||
2787 | MHD_HTTP_METHOD_POST, | ||
2788 | MHD_HTTP_METHOD_PUT, | ||
2789 | MHD_HTTP_METHOD_DELETE, | ||
2790 | MHD_HTTP_METHOD_OPTIONS); | ||
2791 | |||
2792 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
2793 | _ ("OpenID Connect REST API initialized\n")); | ||
2794 | return api; | ||
2795 | } | ||
2796 | |||
2797 | |||
2798 | static int | ||
2799 | cleanup_hashmap (void *cls, const struct GNUNET_HashCode *key, void *value) | ||
2800 | { | ||
2801 | GNUNET_free (value); | ||
2802 | return GNUNET_YES; | ||
2803 | } | ||
2804 | |||
2805 | |||
2806 | /** | ||
2807 | * Exit point from the plugin. | ||
2808 | * | ||
2809 | * @param cls the plugin context (as returned by "init") | ||
2810 | * @return always NULL | ||
2811 | */ | ||
2812 | void * | ||
2813 | libgnunet_plugin_rest_openid_connect_done (void *cls) | ||
2814 | { | ||
2815 | struct GNUNET_REST_Plugin *api = cls; | ||
2816 | struct Plugin *plugin = api->cls; | ||
2817 | struct EgoEntry *ego_entry; | ||
2818 | |||
2819 | plugin->cfg = NULL; | ||
2820 | while (NULL != requests_head) | ||
2821 | cleanup_handle (requests_head); | ||
2822 | if (NULL != OIDC_cookie_jar_map) | ||
2823 | { | ||
2824 | GNUNET_CONTAINER_multihashmap_iterate (OIDC_cookie_jar_map, | ||
2825 | &cleanup_hashmap, | ||
2826 | NULL); | ||
2827 | GNUNET_CONTAINER_multihashmap_destroy (OIDC_cookie_jar_map); | ||
2828 | } | ||
2829 | if (NULL != oidc_code_cache) | ||
2830 | { | ||
2831 | GNUNET_CONTAINER_multihashmap_iterate (oidc_code_cache, | ||
2832 | &cleanup_hashmap, | ||
2833 | NULL); | ||
2834 | GNUNET_CONTAINER_multihashmap_destroy (oidc_code_cache); | ||
2835 | } | ||
2836 | |||
2837 | GNUNET_free (allow_methods); | ||
2838 | if (NULL != gns_handle) | ||
2839 | GNUNET_GNS_disconnect (gns_handle); | ||
2840 | if (NULL != identity_handle) | ||
2841 | GNUNET_IDENTITY_disconnect (identity_handle); | ||
2842 | if (NULL != idp) | ||
2843 | GNUNET_RECLAIM_disconnect (idp); | ||
2844 | while (NULL != (ego_entry = ego_head)) | ||
2845 | { | ||
2846 | GNUNET_CONTAINER_DLL_remove (ego_head, | ||
2847 | ego_tail, | ||
2848 | ego_entry); | ||
2849 | GNUNET_free (ego_entry->identifier); | ||
2850 | GNUNET_free (ego_entry->keystring); | ||
2851 | GNUNET_free (ego_entry); | ||
2852 | } | ||
2853 | GNUNET_free (api); | ||
2854 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
2855 | "OpenID Connect REST plugin is finished\n"); | ||
2856 | return NULL; | ||
2857 | } | ||
2858 | |||
2859 | |||
2860 | /* end of plugin_rest_openid_connect.c */ | ||