2 * Copyright (C) 2017 "IoT.bzh"
3 * Author José Bollo <jose.bollo@iot.bzh>
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
25 #include <json-c/json.h>
26 #include <afb/afb-binding-v1.h>
27 #include <afb/afb-binding-v2.h>
28 #include <afb/afb-request.h>
30 #include "afb-context.h"
33 #include "afb-msg-json.h"
37 #include "afb-apiset.h"
42 /******************************************************************************/
44 static void xreq_finalize(struct afb_xreq *xreq)
47 afb_xreq_fail(xreq, "error", "no reply");
49 afb_hook_xreq_end(xreq);
51 afb_xreq_unhooked_unref(xreq->caller);
52 xreq->queryitf->unref(xreq);
55 inline void afb_xreq_unhooked_addref(struct afb_xreq *xreq)
57 __atomic_add_fetch(&xreq->refcount, 1, __ATOMIC_RELAXED);
60 inline void afb_xreq_unhooked_unref(struct afb_xreq *xreq)
62 if (!__atomic_sub_fetch(&xreq->refcount, 1, __ATOMIC_RELAXED))
66 /******************************************************************************/
68 static inline struct afb_request *to_request(struct afb_xreq *xreq)
70 return &xreq->request;
73 static inline struct afb_req to_req(struct afb_xreq *xreq)
75 return (struct afb_req){ .itf = xreq->request.itf, .closure = &xreq->request };
78 static inline struct afb_xreq *from_request(struct afb_request *request)
80 return CONTAINER_OF(struct afb_xreq, request, request);
83 /******************************************************************************/
89 void (*completion)(struct subcall*, int, struct json_object*);
93 struct jobloop *jobloop;
94 struct json_object *result;
99 void (*callback)(void*, int, struct json_object*);
100 void (*callback2)(void*, int, struct json_object*, struct afb_req);
107 static int subcall_subscribe_cb(struct afb_xreq *xreq, struct afb_eventid *eventid)
109 struct subcall *subcall = CONTAINER_OF_XREQ(struct subcall, xreq);
111 return afb_xreq_subscribe(subcall->xreq.caller, eventid);
114 static int subcall_unsubscribe_cb(struct afb_xreq *xreq, struct afb_eventid *eventid)
116 struct subcall *subcall = CONTAINER_OF_XREQ(struct subcall, xreq);
118 return afb_xreq_unsubscribe(subcall->xreq.caller, eventid);
121 static void subcall_reply_cb(struct afb_xreq *xreq, int status, struct json_object *result)
123 struct subcall *subcall = CONTAINER_OF_XREQ(struct subcall, xreq);
125 subcall->completion(subcall, status, result);
126 json_object_put(result);
127 afb_xreq_unhooked_unref(&subcall->xreq);
130 static void subcall_destroy_cb(struct afb_xreq *xreq)
132 struct subcall *subcall = CONTAINER_OF_XREQ(struct subcall, xreq);
134 json_object_put(subcall->xreq.json);
135 afb_cred_unref(subcall->xreq.cred);
139 const struct afb_xreq_query_itf afb_xreq_subcall_itf = {
140 .reply = subcall_reply_cb,
141 .unref = subcall_destroy_cb,
142 .subscribe = subcall_subscribe_cb,
143 .unsubscribe = subcall_unsubscribe_cb
146 static struct subcall *subcall_alloc(
147 struct afb_xreq *caller,
150 struct json_object *args
153 struct subcall *subcall;
154 size_t lenapi, lenverb;
157 lenapi = 1 + strlen(api);
158 lenverb = 1 + strlen(verb);
159 subcall = malloc(lenapi + lenverb + sizeof *subcall);
161 ERROR("out of memory");
163 copy = (char*)&subcall[1];
164 memcpy(copy, api, lenapi);
166 copy = ©[lenapi];
167 memcpy(copy, verb, lenverb);
170 afb_xreq_init(&subcall->xreq, &afb_xreq_subcall_itf);
171 afb_context_subinit(&subcall->xreq.context, &caller->context);
172 subcall->xreq.cred = afb_cred_addref(caller->cred);
173 subcall->xreq.json = args;
174 subcall->xreq.api = api;
175 subcall->xreq.verb = verb;
176 subcall->xreq.caller = caller;
177 afb_xreq_unhooked_addref(caller);
183 static void subcall_on_reply(struct subcall *subcall, int status, struct json_object *result)
185 subcall->callback(subcall->closure, status, result);
188 static void subcall_req_on_reply(struct subcall *subcall, int status, struct json_object *result)
190 subcall->callback2(subcall->closure, status, result, to_req(subcall->xreq.caller));
193 static void subcall_hooked_on_reply(struct subcall *subcall, int status, struct json_object *result)
195 afb_hook_xreq_subcall_result(subcall->xreq.caller, status, result);
196 subcall_on_reply(subcall, status, result);
199 static void subcall_req_hooked_on_reply(struct subcall *subcall, int status, struct json_object *result)
201 afb_hook_xreq_subcall_req_result(subcall->xreq.caller, status, result);
202 subcall_req_on_reply(subcall, status, result);
205 static void subcall_reply_direct_cb(void *closure, int status, struct json_object *result)
207 struct afb_xreq *xreq = closure;
210 ERROR("subcall replied more than one time!!");
211 json_object_put(result);
214 subcall_reply_cb(xreq, status, result);
218 static void subcall_process(struct subcall *subcall, void (*completion)(struct subcall*, int, struct json_object*))
220 subcall->completion = completion;
221 if (subcall->xreq.caller->queryitf->subcall) {
222 subcall->xreq.caller->queryitf->subcall(
223 subcall->xreq.caller, subcall->xreq.api, subcall->xreq.verb,
224 subcall->xreq.json, subcall_reply_direct_cb, &subcall->xreq);
226 afb_xreq_unhooked_addref(&subcall->xreq);
227 afb_xreq_process(&subcall->xreq, subcall->xreq.caller->apiset);
231 static void subcall(struct subcall *subcall, void (*callback)(void*, int, struct json_object*), void *cb_closure)
233 subcall->callback = callback;
234 subcall->closure = cb_closure;
235 subcall_process(subcall, subcall_on_reply);
238 static void subcall_req(struct subcall *subcall, void (*callback)(void*, int, struct json_object*, struct afb_req), void *cb_closure)
240 subcall->callback2 = callback;
241 subcall->closure = cb_closure;
242 subcall_process(subcall, subcall_req_on_reply);
245 static void subcall_hooked(struct subcall *subcall, void (*callback)(void*, int, struct json_object*), void *cb_closure)
247 subcall->callback = callback;
248 subcall->closure = cb_closure;
249 subcall_process(subcall, subcall_hooked_on_reply);
252 static void subcall_req_hooked(struct subcall *subcall, void (*callback)(void*, int, struct json_object*, struct afb_req), void *cb_closure)
254 subcall->callback2 = callback;
255 subcall->closure = cb_closure;
256 subcall_process(subcall, subcall_req_hooked_on_reply);
259 static void subcall_sync_leave(struct subcall *subcall)
261 struct jobloop *jobloop = __atomic_exchange_n(&subcall->jobloop, NULL, __ATOMIC_RELAXED);
266 static void subcall_sync_reply(struct subcall *subcall, int status, struct json_object *result)
268 subcall->status = status;
269 subcall->result = json_object_get(result);
270 subcall_sync_leave(subcall);
273 static void subcall_sync_enter(int signum, void *closure, struct jobloop *jobloop)
275 struct subcall *subcall = closure;
278 subcall->jobloop = jobloop;
279 subcall->result = NULL;
281 subcall_process(subcall, subcall_sync_reply);
283 subcall->status = -1;
284 subcall_sync_leave(subcall);
288 static int subcallsync(struct subcall *subcall, struct json_object **result)
292 afb_xreq_unhooked_addref(&subcall->xreq);
293 rc = jobs_enter(NULL, 0, subcall_sync_enter, subcall);
294 *result = subcall->result;
295 if (rc < 0 || subcall->status < 0) {
296 *result = *result ?: afb_msg_json_internal_error();
299 afb_xreq_unhooked_unref(&subcall->xreq);
303 /******************************************************************************/
305 static void vinfo(void *first, void *second, const char *fmt, va_list args, void (*fun)(void*,void*,const char*))
308 if (fmt == NULL || vasprintf(&info, fmt, args) < 0)
310 fun(first, second, info);
314 /******************************************************************************/
316 static struct json_object *xreq_json_cb(struct afb_request *closure)
318 struct afb_xreq *xreq = from_request(closure);
319 if (!xreq->json && xreq->queryitf->json)
320 xreq->json = xreq->queryitf->json(xreq);
324 static struct afb_arg xreq_get_cb(struct afb_request *closure, const char *name)
326 struct afb_xreq *xreq = from_request(closure);
328 struct json_object *object, *value;
330 if (xreq->queryitf->get)
331 arg = xreq->queryitf->get(xreq, name);
333 object = xreq_json_cb(closure);
334 if (json_object_object_get_ex(object, name, &value)) {
336 arg.value = json_object_get_string(value);
346 static void xreq_success_cb(struct afb_request *closure, struct json_object *obj, const char *info)
348 struct afb_xreq *xreq = from_request(closure);
351 ERROR("reply called more than one time!!");
352 json_object_put(obj);
355 if (xreq->queryitf->success)
356 xreq->queryitf->success(xreq, obj, info);
358 xreq->queryitf->reply(xreq, 0, afb_msg_json_reply_ok(info, obj, &xreq->context, NULL));
362 static void xreq_fail_cb(struct afb_request *closure, const char *status, const char *info)
364 struct afb_xreq *xreq = from_request(closure);
367 ERROR("reply called more than one time!!");
370 if (xreq->queryitf->fail)
371 xreq->queryitf->fail(xreq, status, info);
373 xreq->queryitf->reply(xreq, -1, afb_msg_json_reply_error(status, info, &xreq->context, NULL));
377 static void xreq_vsuccess_cb(struct afb_request *closure, struct json_object *obj, const char *fmt, va_list args)
379 vinfo(closure, obj, fmt, args, (void*)xreq_success_cb);
382 static void xreq_vfail_cb(struct afb_request *closure, const char *status, const char *fmt, va_list args)
384 vinfo(closure, (void*)status, fmt, args, (void*)xreq_fail_cb);
387 static void *xreq_context_get_cb(struct afb_request *closure)
389 struct afb_xreq *xreq = from_request(closure);
390 return afb_context_get(&xreq->context);
393 static void xreq_context_set_cb(struct afb_request *closure, void *value, void (*free_value)(void*))
395 struct afb_xreq *xreq = from_request(closure);
396 afb_context_set(&xreq->context, value, free_value);
399 static struct afb_request *xreq_addref_cb(struct afb_request *closure)
401 struct afb_xreq *xreq = from_request(closure);
402 afb_xreq_unhooked_addref(xreq);
406 static void xreq_unref_cb(struct afb_request *closure)
408 struct afb_xreq *xreq = from_request(closure);
409 afb_xreq_unhooked_unref(xreq);
412 static void xreq_session_close_cb(struct afb_request *closure)
414 struct afb_xreq *xreq = from_request(closure);
415 afb_context_close(&xreq->context);
418 static int xreq_session_set_LOA_cb(struct afb_request *closure, unsigned level)
420 struct afb_xreq *xreq = from_request(closure);
421 return afb_context_change_loa(&xreq->context, level);
424 static int xreq_subscribe_eventid_cb(struct afb_request *closure, struct afb_eventid *eventid);
425 static int xreq_subscribe_cb(struct afb_request *closure, struct afb_event event)
427 return xreq_subscribe_eventid_cb(closure, afb_event_to_eventid(event));
430 static int xreq_subscribe_eventid_cb(struct afb_request *closure, struct afb_eventid *eventid)
432 struct afb_xreq *xreq = from_request(closure);
433 return afb_xreq_subscribe(xreq, eventid);
436 int afb_xreq_subscribe(struct afb_xreq *xreq, struct afb_eventid *eventid)
439 return afb_evt_add_watch(xreq->listener, eventid);
440 if (xreq->queryitf->subscribe)
441 return xreq->queryitf->subscribe(xreq, eventid);
442 ERROR("no event listener, subscription impossible");
447 static int xreq_unsubscribe_eventid_cb(struct afb_request *closure, struct afb_eventid *eventid);
448 static int xreq_unsubscribe_cb(struct afb_request *closure, struct afb_event event)
450 return xreq_unsubscribe_eventid_cb(closure, afb_event_to_eventid(event));
453 static int xreq_unsubscribe_eventid_cb(struct afb_request *closure, struct afb_eventid *eventid)
455 struct afb_xreq *xreq = from_request(closure);
456 return afb_xreq_unsubscribe(xreq, eventid);
459 int afb_xreq_unsubscribe(struct afb_xreq *xreq, struct afb_eventid *eventid)
462 return afb_evt_remove_watch(xreq->listener, eventid);
463 if (xreq->queryitf->unsubscribe)
464 return xreq->queryitf->unsubscribe(xreq, eventid);
465 ERROR("no event listener, unsubscription impossible");
470 static void xreq_subcall_cb(struct afb_request *closure, const char *api, const char *verb, struct json_object *args, void (*callback)(void*, int, struct json_object*), void *cb_closure)
472 struct afb_xreq *xreq = from_request(closure);
475 sc = subcall_alloc(xreq, api, verb, args);
478 callback(cb_closure, 1, afb_msg_json_internal_error());
479 json_object_put(args);
481 subcall(sc, callback, cb_closure);
485 static void xreq_subcall_req_cb(struct afb_request *closure, const char *api, const char *verb, struct json_object *args, void (*callback)(void*, int, struct json_object*, struct afb_req), void *cb_closure)
487 struct afb_xreq *xreq = from_request(closure);
490 sc = subcall_alloc(xreq, api, verb, args);
493 callback(cb_closure, 1, afb_msg_json_internal_error(), to_req(xreq));
494 json_object_put(args);
496 subcall_req(sc, callback, cb_closure);
501 static int xreq_subcallsync_cb(struct afb_request *closure, const char *api, const char *verb, struct json_object *args, struct json_object **result)
505 struct afb_xreq *xreq = from_request(closure);
506 struct json_object *resu;
508 sc = subcall_alloc(xreq, api, verb, args);
511 resu = afb_msg_json_internal_error();
512 json_object_put(args);
514 rc = subcallsync(sc, &resu);
519 json_object_put(resu);
523 static void xreq_vverbose_cb(struct afb_request *closure, int level, const char *file, int line, const char *func, const char *fmt, va_list args)
526 struct afb_xreq *xreq = from_request(closure);
528 if (!fmt || vasprintf(&p, fmt, args) < 0)
529 vverbose(level, file, line, func, fmt, args);
531 verbose(level, file, line, func, "[REQ/API %s] %s", xreq->api, p);
536 static struct afb_stored_req *xreq_store_cb(struct afb_request *closure)
538 xreq_addref_cb(closure);
539 return (struct afb_stored_req*)closure;
542 static int xreq_has_permission_cb(struct afb_request *closure, const char *permission)
544 struct afb_xreq *xreq = from_request(closure);
545 return afb_auth_has_permission(xreq, permission);
548 static char *xreq_get_application_id_cb(struct afb_request *closure)
550 struct afb_xreq *xreq = from_request(closure);
551 return xreq->cred && xreq->cred->id ? strdup(xreq->cred->id) : NULL;
554 static void *xreq_context_make_cb(struct afb_request *closure, int replace, void *(*create_value)(void*), void (*free_value)(void*), void *create_closure)
556 struct afb_xreq *xreq = from_request(closure);
557 return afb_context_make(&xreq->context, replace, create_value, free_value, create_closure);
560 /******************************************************************************/
562 static struct json_object *xreq_hooked_json_cb(struct afb_request *closure)
564 struct json_object *r = xreq_json_cb(closure);
565 struct afb_xreq *xreq = from_request(closure);
566 return afb_hook_xreq_json(xreq, r);
569 static struct afb_arg xreq_hooked_get_cb(struct afb_request *closure, const char *name)
571 struct afb_arg r = xreq_get_cb(closure, name);
572 struct afb_xreq *xreq = from_request(closure);
573 return afb_hook_xreq_get(xreq, name, r);
576 static void xreq_hooked_success_cb(struct afb_request *closure, struct json_object *obj, const char *info)
578 struct afb_xreq *xreq = from_request(closure);
579 afb_hook_xreq_success(xreq, obj, info);
580 xreq_success_cb(closure, obj, info);
583 static void xreq_hooked_fail_cb(struct afb_request *closure, const char *status, const char *info)
585 struct afb_xreq *xreq = from_request(closure);
586 afb_hook_xreq_fail(xreq, status, info);
587 xreq_fail_cb(closure, status, info);
590 static void xreq_hooked_vsuccess_cb(struct afb_request *closure, struct json_object *obj, const char *fmt, va_list args)
592 vinfo(closure, obj, fmt, args, (void*)xreq_hooked_success_cb);
595 static void xreq_hooked_vfail_cb(struct afb_request *closure, const char *status, const char *fmt, va_list args)
597 vinfo(closure, (void*)status, fmt, args, (void*)xreq_hooked_fail_cb);
600 static void *xreq_hooked_context_get_cb(struct afb_request *closure)
602 void *r = xreq_context_get_cb(closure);
603 struct afb_xreq *xreq = from_request(closure);
604 return afb_hook_xreq_context_get(xreq, r);
607 static void xreq_hooked_context_set_cb(struct afb_request *closure, void *value, void (*free_value)(void*))
609 struct afb_xreq *xreq = from_request(closure);
610 afb_hook_xreq_context_set(xreq, value, free_value);
611 xreq_context_set_cb(closure, value, free_value);
614 static struct afb_request *xreq_hooked_addref_cb(struct afb_request *closure)
616 struct afb_xreq *xreq = from_request(closure);
617 afb_hook_xreq_addref(xreq);
618 return xreq_addref_cb(closure);
621 static void xreq_hooked_unref_cb(struct afb_request *closure)
623 struct afb_xreq *xreq = from_request(closure);
624 afb_hook_xreq_unref(xreq);
625 xreq_unref_cb(closure);
628 static void xreq_hooked_session_close_cb(struct afb_request *closure)
630 struct afb_xreq *xreq = from_request(closure);
631 afb_hook_xreq_session_close(xreq);
632 xreq_session_close_cb(closure);
635 static int xreq_hooked_session_set_LOA_cb(struct afb_request *closure, unsigned level)
637 int r = xreq_session_set_LOA_cb(closure, level);
638 struct afb_xreq *xreq = from_request(closure);
639 return afb_hook_xreq_session_set_LOA(xreq, level, r);
642 static int xreq_hooked_subscribe_eventid_cb(struct afb_request *closure, struct afb_eventid *eventid);
643 static int xreq_hooked_subscribe_cb(struct afb_request *closure, struct afb_event event)
645 return xreq_hooked_subscribe_eventid_cb(closure, afb_event_to_eventid(event));
648 static int xreq_hooked_subscribe_eventid_cb(struct afb_request *closure, struct afb_eventid *eventid)
650 int r = xreq_subscribe_eventid_cb(closure, eventid);
651 struct afb_xreq *xreq = from_request(closure);
652 return afb_hook_xreq_subscribe(xreq, eventid, r);
655 static int xreq_hooked_unsubscribe_eventid_cb(struct afb_request *closure, struct afb_eventid *eventid);
656 static int xreq_hooked_unsubscribe_cb(struct afb_request *closure, struct afb_event event)
658 return xreq_hooked_unsubscribe_eventid_cb(closure, afb_event_to_eventid(event));
661 static int xreq_hooked_unsubscribe_eventid_cb(struct afb_request *closure, struct afb_eventid *eventid)
663 int r = xreq_unsubscribe_eventid_cb(closure, eventid);
664 struct afb_xreq *xreq = from_request(closure);
665 return afb_hook_xreq_unsubscribe(xreq, eventid, r);
668 static void xreq_hooked_subcall_cb(struct afb_request *closure, const char *api, const char *verb, struct json_object *args, void (*callback)(void*, int, struct json_object*), void *cb_closure)
670 struct afb_xreq *xreq = from_request(closure);
673 afb_hook_xreq_subcall(xreq, api, verb, args);
674 sc = subcall_alloc(xreq, api, verb, args);
677 callback(cb_closure, 1, afb_msg_json_internal_error());
678 json_object_put(args);
680 subcall_hooked(sc, callback, cb_closure);
684 static void xreq_hooked_subcall_req_cb(struct afb_request *closure, const char *api, const char *verb, struct json_object *args, void (*callback)(void*, int, struct json_object*, struct afb_req), void *cb_closure)
686 struct afb_xreq *xreq = from_request(closure);
689 afb_hook_xreq_subcall_req(xreq, api, verb, args);
690 sc = subcall_alloc(xreq, api, verb, args);
693 callback(cb_closure, 1, afb_msg_json_internal_error(), to_req(xreq));
694 json_object_put(args);
696 subcall_req_hooked(sc, callback, cb_closure);
700 static int xreq_hooked_subcallsync_cb(struct afb_request *closure, const char *api, const char *verb, struct json_object *args, struct json_object **result)
703 struct afb_xreq *xreq = from_request(closure);
704 afb_hook_xreq_subcallsync(xreq, api, verb, args);
705 r = xreq_subcallsync_cb(closure, api, verb, args, result);
706 return afb_hook_xreq_subcallsync_result(xreq, r, *result);
709 static void xreq_hooked_vverbose_cb(struct afb_request *closure, int level, const char *file, int line, const char *func, const char *fmt, va_list args)
711 struct afb_xreq *xreq = from_request(closure);
714 xreq_vverbose_cb(closure, level, file, line, func, fmt, args);
715 afb_hook_xreq_vverbose(xreq, level, file, line, func, fmt, ap);
719 static struct afb_stored_req *xreq_hooked_store_cb(struct afb_request *closure)
721 struct afb_xreq *xreq = from_request(closure);
722 struct afb_stored_req *r = xreq_store_cb(closure);
723 afb_hook_xreq_store(xreq, r);
727 static int xreq_hooked_has_permission_cb(struct afb_request *closure, const char *permission)
729 struct afb_xreq *xreq = from_request(closure);
730 int r = xreq_has_permission_cb(closure, permission);
731 return afb_hook_xreq_has_permission(xreq, permission, r);
734 static char *xreq_hooked_get_application_id_cb(struct afb_request *closure)
736 struct afb_xreq *xreq = from_request(closure);
737 char *r = xreq_get_application_id_cb(closure);
738 return afb_hook_xreq_get_application_id(xreq, r);
741 static void *xreq_hooked_context_make_cb(struct afb_request *closure, int replace, void *(*create_value)(void*), void (*free_value)(void*), void *create_closure)
743 struct afb_xreq *xreq = from_request(closure);
744 void *result = xreq_context_make_cb(closure, replace, create_value, free_value, create_closure);
745 return afb_hook_xreq_context_make(xreq, replace, create_value, free_value, create_closure, result);
748 /******************************************************************************/
750 const struct afb_request_itf xreq_itf = {
751 .json = xreq_json_cb,
753 .success = xreq_success_cb,
754 .fail = xreq_fail_cb,
755 .vsuccess = xreq_vsuccess_cb,
756 .vfail = xreq_vfail_cb,
757 .context_get = xreq_context_get_cb,
758 .context_set = xreq_context_set_cb,
759 .addref = xreq_addref_cb,
760 .unref = xreq_unref_cb,
761 .session_close = xreq_session_close_cb,
762 .session_set_LOA = xreq_session_set_LOA_cb,
763 .subscribe = xreq_subscribe_cb,
764 .unsubscribe = xreq_unsubscribe_cb,
765 .subcall = xreq_subcall_cb,
766 .subcallsync = xreq_subcallsync_cb,
767 .vverbose = xreq_vverbose_cb,
768 .store = xreq_store_cb,
769 .subcall_req = xreq_subcall_req_cb,
770 .has_permission = xreq_has_permission_cb,
771 .get_application_id = xreq_get_application_id_cb,
772 .context_make = xreq_context_make_cb,
773 .subscribe_eventid = xreq_subscribe_eventid_cb,
774 .unsubscribe_eventid = xreq_unsubscribe_eventid_cb,
777 const struct afb_request_itf xreq_hooked_itf = {
778 .json = xreq_hooked_json_cb,
779 .get = xreq_hooked_get_cb,
780 .success = xreq_hooked_success_cb,
781 .fail = xreq_hooked_fail_cb,
782 .vsuccess = xreq_hooked_vsuccess_cb,
783 .vfail = xreq_hooked_vfail_cb,
784 .context_get = xreq_hooked_context_get_cb,
785 .context_set = xreq_hooked_context_set_cb,
786 .addref = xreq_hooked_addref_cb,
787 .unref = xreq_hooked_unref_cb,
788 .session_close = xreq_hooked_session_close_cb,
789 .session_set_LOA = xreq_hooked_session_set_LOA_cb,
790 .subscribe = xreq_hooked_subscribe_cb,
791 .unsubscribe = xreq_hooked_unsubscribe_cb,
792 .subcall = xreq_hooked_subcall_cb,
793 .subcallsync = xreq_hooked_subcallsync_cb,
794 .vverbose = xreq_hooked_vverbose_cb,
795 .store = xreq_hooked_store_cb,
796 .subcall_req = xreq_hooked_subcall_req_cb,
797 .has_permission = xreq_hooked_has_permission_cb,
798 .get_application_id = xreq_hooked_get_application_id_cb,
799 .context_make = xreq_hooked_context_make_cb,
800 .subscribe_eventid = xreq_hooked_subscribe_eventid_cb,
801 .unsubscribe_eventid = xreq_hooked_unsubscribe_eventid_cb,
804 /******************************************************************************/
806 struct afb_req afb_xreq_unstore(struct afb_stored_req *sreq)
808 struct afb_xreq *xreq = (struct afb_xreq *)sreq;
810 afb_hook_xreq_unstore(xreq);
814 struct json_object *afb_xreq_json(struct afb_xreq *xreq)
816 return afb_request_json(to_request(xreq));
819 void afb_xreq_success(struct afb_xreq *xreq, struct json_object *obj, const char *info)
821 afb_request_success(to_request(xreq), obj, info);
824 void afb_xreq_success_f(struct afb_xreq *xreq, struct json_object *obj, const char *info, ...)
828 va_start(args, info);
829 afb_request_success_v(to_request(xreq), obj, info, args);
833 void afb_xreq_fail(struct afb_xreq *xreq, const char *status, const char *info)
835 afb_request_fail(to_request(xreq), status, info);
838 void afb_xreq_fail_f(struct afb_xreq *xreq, const char *status, const char *info, ...)
842 va_start(args, info);
843 afb_request_fail_v(to_request(xreq), status, info, args);
848 const char *afb_xreq_raw(struct afb_xreq *xreq, size_t *size)
850 struct json_object *obj = xreq_json_cb(to_request(xreq));
851 const char *result = json_object_to_json_string(obj);
853 *size = strlen(result);
857 void afb_xreq_addref(struct afb_xreq *xreq)
859 afb_request_addref(to_request(xreq));
862 void afb_xreq_unref(struct afb_xreq *xreq)
864 afb_request_unref(to_request(xreq));
867 void afb_xreq_unhooked_subcall(struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args, void (*callback)(void*, int, struct json_object*), void *cb_closure)
869 xreq_subcall_cb(to_request(xreq), api, verb, args, callback, cb_closure);
872 void afb_xreq_subcall(struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args, void (*callback)(void*, int, struct json_object*), void *cb_closure)
874 afb_request_subcall(to_request(xreq), api, verb, args, callback, cb_closure);
877 int afb_xreq_unhooked_subcall_sync(struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args, struct json_object **result)
879 return xreq_subcallsync_cb(to_request(xreq), api, verb, args, result);
882 int afb_xreq_subcall_sync(struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args, struct json_object **result)
884 return afb_request_subcall_sync(to_request(xreq), api, verb, args, result);
887 static int xreq_session_check_apply_v1(struct afb_xreq *xreq, int sessionflags)
891 if ((sessionflags & (AFB_SESSION_CLOSE_V1|AFB_SESSION_RENEW_V1|AFB_SESSION_CHECK_V1|AFB_SESSION_LOA_EQ_V1)) != 0) {
892 if (!afb_context_check(&xreq->context)) {
893 afb_context_close(&xreq->context);
894 afb_xreq_fail_f(xreq, "denied", "invalid token's identity");
900 if ((sessionflags & AFB_SESSION_LOA_GE_V1) != 0) {
901 loa = (sessionflags >> AFB_SESSION_LOA_SHIFT_V1) & AFB_SESSION_LOA_MASK_V1;
902 if (!afb_context_check_loa(&xreq->context, loa)) {
903 afb_xreq_fail_f(xreq, "denied", "invalid LOA");
909 if ((sessionflags & AFB_SESSION_LOA_LE_V1) != 0) {
910 loa = (sessionflags >> AFB_SESSION_LOA_SHIFT_V1) & AFB_SESSION_LOA_MASK_V1;
911 if (afb_context_check_loa(&xreq->context, loa + 1)) {
912 afb_xreq_fail_f(xreq, "denied", "invalid LOA");
918 if ((sessionflags & AFB_SESSION_RENEW_V1) != 0) {
919 afb_context_refresh(&xreq->context);
921 if ((sessionflags & AFB_SESSION_CLOSE_V1) != 0) {
922 afb_context_change_loa(&xreq->context, 0);
923 afb_context_close(&xreq->context);
929 static int xreq_session_check_apply_v2(struct afb_xreq *xreq, uint32_t sessionflags, const struct afb_auth *auth)
933 if (sessionflags != 0) {
934 if (!afb_context_check(&xreq->context)) {
935 afb_context_close(&xreq->context);
936 afb_xreq_fail_f(xreq, "denied", "invalid token's identity");
942 loa = (int)(sessionflags & AFB_SESSION_LOA_MASK_V2);
943 if (loa && !afb_context_check_loa(&xreq->context, loa)) {
944 afb_xreq_fail_f(xreq, "denied", "invalid LOA");
949 if (auth && !afb_auth_check(xreq, auth)) {
950 afb_xreq_fail_f(xreq, "denied", "authorisation refused");
955 if ((sessionflags & AFB_SESSION_REFRESH_V2) != 0) {
956 afb_context_refresh(&xreq->context);
958 if ((sessionflags & AFB_SESSION_CLOSE_V2) != 0) {
959 afb_context_close(&xreq->context);
965 void afb_xreq_call_verb_v1(struct afb_xreq *xreq, const struct afb_verb_desc_v1 *verb)
968 afb_xreq_fail_unknown_verb(xreq);
970 if (!xreq_session_check_apply_v1(xreq, verb->session))
971 verb->callback(to_req(xreq));
974 void afb_xreq_call_verb_v2(struct afb_xreq *xreq, const struct afb_verb_v2 *verb)
977 afb_xreq_fail_unknown_verb(xreq);
979 if (!xreq_session_check_apply_v2(xreq, verb->session, verb->auth))
980 verb->callback(to_req(xreq));
983 void afb_xreq_init(struct afb_xreq *xreq, const struct afb_xreq_query_itf *queryitf)
985 memset(xreq, 0, sizeof *xreq);
986 xreq->request.itf = &xreq_hooked_itf; /* hook by default */
988 xreq->queryitf = queryitf;
991 void afb_xreq_fail_unknown_api(struct afb_xreq *xreq)
993 afb_xreq_fail_f(xreq, "unknown-api", "api %s not found (for verb %s)", xreq->api, xreq->verb);
996 void afb_xreq_fail_unknown_verb(struct afb_xreq *xreq)
998 afb_xreq_fail_f(xreq, "unknown-verb", "verb %s unknown within api %s", xreq->verb, xreq->api);
1001 static void init_hooking(struct afb_xreq *xreq)
1003 afb_hook_init_xreq(xreq);
1004 if (xreq->hookflags)
1005 afb_hook_xreq_begin(xreq);
1007 xreq->request.itf = &xreq_itf; /* unhook the interface */
1011 * job callback for asynchronous and secured processing of the request.
1013 static void process_async(int signum, void *arg)
1015 struct afb_xreq *xreq = arg;
1016 const struct afb_api *api;
1019 /* emit the error (assumes that hooking is initialised) */
1020 afb_xreq_fail_f(xreq, "aborted", "signal %s(%d) caught", strsignal(signum), signum);
1024 /* invoke api call method to process the reqiest */
1025 api = (const struct afb_api*)xreq->context.api_key;
1026 api->itf->call(api->closure, xreq);
1028 /* release the request */
1029 afb_xreq_unhooked_unref(xreq);
1033 * Early request failure of the request 'xreq' with, as usual, 'status' and 'info'
1034 * The early failure occurs only in function 'afb_xreq_process' where normally,
1035 * the hooking is not initialised. So this "early" failure takes care to initialise
1036 * the hooking in first.
1038 static void early_failure(struct afb_xreq *xreq, const char *status, const char *info, ...)
1046 va_start(args, info);
1047 afb_request_fail_v(to_request(xreq), status, info, args);
1052 * Enqueue a job for processing the request 'xreq' using the given 'apiset'.
1053 * Errors are reported as request failures.
1055 void afb_xreq_process(struct afb_xreq *xreq, struct afb_apiset *apiset)
1057 const struct afb_api *api;
1058 struct afb_xreq *caller;
1060 /* lookup at the api */
1061 xreq->apiset = apiset;
1062 api = afb_apiset_lookup_started(apiset, xreq->api, 1);
1064 if (errno == ENOENT)
1065 early_failure(xreq, "unknown-api", "api %s not found (for verb %s)", xreq->api, xreq->verb);
1067 early_failure(xreq, "bad-api-state", "api %s not started correctly: %m", xreq->api);
1070 xreq->context.api_key = api;
1072 /* check self locking */
1074 caller = xreq->caller;
1076 if (((const struct afb_api *)caller->context.api_key)->group == api->group) {
1077 /* noconcurrency lock detected */
1078 ERROR("self-lock detected in call stack for API %s", xreq->api);
1079 early_failure(xreq, "self-locked", "recursive self lock, API %s", xreq->api);
1082 caller = caller->caller;
1086 /* queue the request job */
1087 afb_xreq_unhooked_addref(xreq);
1088 if (jobs_queue(api->group, afb_apiset_timeout_get(apiset), process_async, xreq) < 0) {
1089 /* TODO: allows or not to proccess it directly as when no threading? (see above) */
1090 ERROR("can't process job with threads: %m");
1091 early_failure(xreq, "cancelled", "not able to create a job for the task");
1092 afb_xreq_unhooked_unref(xreq);
1095 afb_xreq_unhooked_unref(xreq);