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.
19 #define AFB_BINDING_PRAGMA_NO_VERBOSE_MACRO
25 #include <json-c/json.h>
26 #include <afb/afb-binding.h>
28 #include "afb-context.h"
31 #include "afb-msg-json.h"
32 #include "afb-subcall.h"
35 #include "afb-apiset.h"
40 /******************************************************************************/
42 static struct json_object *xreq_json_cb(void *closure)
44 struct afb_xreq *xreq = closure;
45 return xreq->json ? : (xreq->json = xreq->queryitf->json(xreq));
48 static struct afb_arg xreq_get_cb(void *closure, const char *name)
50 struct afb_xreq *xreq = closure;
51 if (xreq->queryitf->get)
52 return xreq->queryitf->get(xreq, name);
54 return afb_msg_json_get_arg(xreq_json_cb(closure), name);
57 static void xreq_success_cb(void *closure, struct json_object *obj, const char *info)
59 struct afb_xreq *xreq = closure;
62 ERROR("reply called more than one time!!");
66 if (xreq->queryitf->success)
67 xreq->queryitf->success(xreq, obj, info);
69 xreq->queryitf->reply(xreq, 0, afb_msg_json_reply_ok(info, obj, &xreq->context, NULL));
73 static void xreq_fail_cb(void *closure, const char *status, const char *info)
75 struct afb_xreq *xreq = closure;
78 ERROR("reply called more than one time!!");
81 if (xreq->queryitf->fail)
82 xreq->queryitf->fail(xreq, status, info);
84 xreq->queryitf->reply(xreq, 1, afb_msg_json_reply_error(status, info, &xreq->context, NULL));
88 static void *xreq_context_get_cb(void *closure)
90 struct afb_xreq *xreq = closure;
91 return afb_context_get(&xreq->context);
94 static void xreq_context_set_cb(void *closure, void *value, void (*free_value)(void*))
96 struct afb_xreq *xreq = closure;
97 afb_context_set(&xreq->context, value, free_value);
100 static void xreq_addref_cb(void *closure)
102 struct afb_xreq *xreq = closure;
103 __atomic_add_fetch(&xreq->refcount, 1, __ATOMIC_RELAXED);
106 static void xreq_unref_cb(void *closure)
108 struct afb_xreq *xreq = closure;
109 if (!__atomic_sub_fetch(&xreq->refcount, 1, __ATOMIC_RELAXED)) {
110 xreq->queryitf->unref(xreq);
114 static void xreq_session_close_cb(void *closure)
116 struct afb_xreq *xreq = closure;
117 afb_context_close(&xreq->context);
120 static int xreq_session_set_LOA_cb(void *closure, unsigned level)
122 struct afb_xreq *xreq = closure;
123 return afb_context_change_loa(&xreq->context, level);
126 static int xreq_subscribe_cb(void *closure, struct afb_event event)
128 struct afb_xreq *xreq = closure;
129 return afb_xreq_subscribe(xreq, event);
132 int afb_xreq_subscribe(struct afb_xreq *xreq, struct afb_event event)
135 return afb_evt_add_watch(xreq->listener, event);
136 if (xreq->queryitf->subscribe)
137 return xreq->queryitf->subscribe(xreq, event);
138 ERROR("no event listener, subscription impossible");
143 static int xreq_unsubscribe_cb(void *closure, struct afb_event event)
145 struct afb_xreq *xreq = closure;
146 return afb_xreq_unsubscribe(xreq, event);
149 int afb_xreq_unsubscribe(struct afb_xreq *xreq, struct afb_event event)
152 return afb_evt_remove_watch(xreq->listener, event);
153 if (xreq->queryitf->unsubscribe)
154 return xreq->queryitf->unsubscribe(xreq, event);
155 ERROR("no event listener, unsubscription impossible");
160 static void xreq_subcall_cb(void *closure, const char *api, const char *verb, struct json_object *args, void (*callback)(void*, int, struct json_object*), void *cb_closure)
162 struct afb_xreq *xreq = closure;
164 if (xreq->queryitf->subcall) {
165 xreq->queryitf->subcall(xreq, api, verb, args, callback, cb_closure);
166 json_object_put(args);
168 afb_subcall(xreq, api, verb, args, callback, cb_closure);
174 struct afb_xreq *caller;
177 struct json_object *args;
178 struct jobloop *jobloop;
179 struct json_object *result;
183 static void xreq_sync_leave(struct xreq_sync *sync)
185 struct jobloop *jobloop = sync->jobloop;
187 sync->jobloop = NULL;
192 static void xreq_sync_reply(void *closure, int iserror, struct json_object *obj)
194 struct xreq_sync *sync = closure;
196 sync->iserror = iserror;
197 sync->result = json_object_get(obj);
198 xreq_sync_leave(sync);
201 static void xreq_sync_enter(int signum, void *closure, struct jobloop *jobloop)
203 struct xreq_sync *sync = closure;
206 sync->jobloop = jobloop;
207 xreq_subcall_cb(sync->caller, sync->api, sync->verb, json_object_get(sync->args), xreq_sync_reply, sync);
210 xreq_sync_leave(sync);
214 static int xreq_subcallsync_cb(void *closure, const char *api, const char *verb, struct json_object *args, struct json_object **result)
217 struct xreq_sync sync;
218 struct afb_xreq *xreq = closure;
228 rc = jobs_enter(NULL, 0, xreq_sync_enter, &sync);
229 json_object_put(args);
230 if (rc < 0 || sync.iserror) {
231 *result = sync.result ? : afb_msg_json_internal_error();
234 *result = sync.result;
238 /******************************************************************************/
240 static struct json_object *xreq_hooked_json_cb(void *closure)
242 struct json_object *r = xreq_json_cb(closure);
243 struct afb_xreq *xreq = closure;
244 return afb_hook_xreq_json(xreq, r);
247 static struct afb_arg xreq_hooked_get_cb(void *closure, const char *name)
249 struct afb_arg r = xreq_get_cb(closure, name);
250 struct afb_xreq *xreq = closure;
251 return afb_hook_xreq_get(xreq, name, r);
254 static void xreq_hooked_success_cb(void *closure, struct json_object *obj, const char *info)
256 struct afb_xreq *xreq = closure;
257 afb_hook_xreq_success(xreq, obj, info);
258 xreq_success_cb(closure, obj, info);
261 static void xreq_hooked_fail_cb(void *closure, const char *status, const char *info)
263 struct afb_xreq *xreq = closure;
264 afb_hook_xreq_fail(xreq, status, info);
265 xreq_fail_cb(closure, status, info);
268 static void *xreq_hooked_context_get_cb(void *closure)
270 void *r = xreq_context_get_cb(closure);
271 struct afb_xreq *xreq = closure;
272 return afb_hook_xreq_context_get(xreq, r);
275 static void xreq_hooked_context_set_cb(void *closure, void *value, void (*free_value)(void*))
277 struct afb_xreq *xreq = closure;
278 afb_hook_xreq_context_set(xreq, value, free_value);
279 xreq_context_set_cb(closure, value, free_value);
282 static void xreq_hooked_addref_cb(void *closure)
284 struct afb_xreq *xreq = closure;
285 afb_hook_xreq_addref(xreq);
286 xreq_addref_cb(closure);
289 static void xreq_hooked_unref_cb(void *closure)
291 struct afb_xreq *xreq = closure;
292 afb_hook_xreq_unref(xreq);
293 if (!__atomic_sub_fetch(&xreq->refcount, 1, __ATOMIC_RELAXED)) {
294 afb_hook_xreq_end(xreq);
295 xreq->queryitf->unref(xreq);
299 static void xreq_hooked_session_close_cb(void *closure)
301 struct afb_xreq *xreq = closure;
302 afb_hook_xreq_session_close(xreq);
303 xreq_session_close_cb(closure);
306 static int xreq_hooked_session_set_LOA_cb(void *closure, unsigned level)
308 int r = xreq_session_set_LOA_cb(closure, level);
309 struct afb_xreq *xreq = closure;
310 return afb_hook_xreq_session_set_LOA(xreq, level, r);
313 static int xreq_hooked_subscribe_cb(void *closure, struct afb_event event)
315 int r = xreq_subscribe_cb(closure, event);
316 struct afb_xreq *xreq = closure;
317 return afb_hook_xreq_subscribe(xreq, event, r);
320 static int xreq_hooked_unsubscribe_cb(void *closure, struct afb_event event)
322 int r = xreq_unsubscribe_cb(closure, event);
323 struct afb_xreq *xreq = closure;
324 return afb_hook_xreq_unsubscribe(xreq, event, r);
329 struct afb_xreq *xreq;
330 void (*callback)(void*, int, struct json_object*);
334 static void xreq_hooked_subcall_reply_cb(void *closure, int iserror, struct json_object *result)
336 struct reply *reply = closure;
338 afb_hook_xreq_subcall_result(reply->xreq, iserror, result);
339 reply->callback(reply->closure, iserror, result);
343 static void xreq_hooked_subcall_cb(void *closure, const char *api, const char *verb, struct json_object *args, void (*callback)(void*, int, struct json_object*), void *cb_closure)
345 struct reply *reply = malloc(sizeof *reply);
346 struct afb_xreq *xreq = closure;
347 afb_hook_xreq_subcall(xreq, api, verb, args);
350 reply->callback = callback;
351 reply->closure = cb_closure;
352 xreq_subcall_cb(closure, api, verb, args, xreq_hooked_subcall_reply_cb, reply);
354 ERROR("out of memory");
355 xreq_subcall_cb(closure, api, verb, args, callback, cb_closure);
359 static int xreq_hooked_subcallsync_cb(void *closure, const char *api, const char *verb, struct json_object *args, struct json_object **result)
362 struct afb_xreq *xreq = closure;
363 afb_hook_xreq_subcallsync(xreq, api, verb, args);
364 r = xreq_subcallsync_cb(closure, api, verb, args, result);
365 return afb_hook_xreq_subcallsync_result(xreq, r, *result);
368 /******************************************************************************/
370 const struct afb_req_itf xreq_itf = {
371 .json = xreq_json_cb,
373 .success = xreq_success_cb,
374 .fail = xreq_fail_cb,
375 .context_get = xreq_context_get_cb,
376 .context_set = xreq_context_set_cb,
377 .addref = xreq_addref_cb,
378 .unref = xreq_unref_cb,
379 .session_close = xreq_session_close_cb,
380 .session_set_LOA = xreq_session_set_LOA_cb,
381 .subscribe = xreq_subscribe_cb,
382 .unsubscribe = xreq_unsubscribe_cb,
383 .subcall = xreq_subcall_cb,
384 .subcallsync = xreq_subcallsync_cb
387 const struct afb_req_itf xreq_hooked_itf = {
388 .json = xreq_hooked_json_cb,
389 .get = xreq_hooked_get_cb,
390 .success = xreq_hooked_success_cb,
391 .fail = xreq_hooked_fail_cb,
392 .context_get = xreq_hooked_context_get_cb,
393 .context_set = xreq_hooked_context_set_cb,
394 .addref = xreq_hooked_addref_cb,
395 .unref = xreq_hooked_unref_cb,
396 .session_close = xreq_hooked_session_close_cb,
397 .session_set_LOA = xreq_hooked_session_set_LOA_cb,
398 .subscribe = xreq_hooked_subscribe_cb,
399 .unsubscribe = xreq_hooked_unsubscribe_cb,
400 .subcall = xreq_hooked_subcall_cb,
401 .subcallsync = xreq_hooked_subcallsync_cb
404 static inline struct afb_req to_req(struct afb_xreq *xreq)
406 return (struct afb_req){ .itf = xreq->hookflags ? &xreq_hooked_itf : &xreq_itf, .closure = xreq };
409 /******************************************************************************/
411 struct json_object *afb_xreq_json(struct afb_xreq *xreq)
413 return afb_req_json(to_req(xreq));
416 void afb_xreq_success(struct afb_xreq *xreq, struct json_object *obj, const char *info)
418 afb_req_success(to_req(xreq), obj, info);
421 void afb_xreq_success_f(struct afb_xreq *xreq, struct json_object *obj, const char *info, ...)
425 va_start(args, info);
426 if (info == NULL || vasprintf(&message, info, args) < 0)
429 afb_xreq_success(xreq, obj, message);
433 void afb_xreq_fail(struct afb_xreq *xreq, const char *status, const char *info)
435 afb_req_fail(to_req(xreq), status, info);
438 void afb_xreq_fail_f(struct afb_xreq *xreq, const char *status, const char *info, ...)
442 va_start(args, info);
443 if (info == NULL || vasprintf(&message, info, args) < 0)
446 afb_xreq_fail(xreq, status, message);
450 const char *afb_xreq_raw(struct afb_xreq *xreq, size_t *size)
452 struct json_object *obj = xreq_json_cb(xreq);
453 const char *result = json_object_to_json_string(obj);
455 *size = strlen(result);
459 void afb_xreq_addref(struct afb_xreq *xreq)
461 afb_req_addref(to_req(xreq));
464 void afb_xreq_unref(struct afb_xreq *xreq)
466 afb_req_unref(to_req(xreq));
469 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)
471 xreq_subcall_cb(xreq, api, verb, args, callback, cb_closure);
474 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)
476 afb_req_subcall(to_req(xreq), api, verb, args, callback, cb_closure);
479 int afb_xreq_unhooked_subcall_sync(struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args, struct json_object **result)
481 return xreq_subcallsync_cb(xreq, api, verb, args, result);
484 int afb_xreq_subcall_sync(struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args, struct json_object **result)
486 return afb_req_subcall_sync(to_req(xreq), api, verb, args, result);
489 static int xreq_session_check_apply_v1(struct afb_xreq *xreq, int sessionflags)
493 if ((sessionflags & (AFB_SESSION_CLOSE_V1|AFB_SESSION_RENEW_V1|AFB_SESSION_CHECK_V1|AFB_SESSION_LOA_EQ_V1)) != 0) {
494 if (!afb_context_check(&xreq->context)) {
495 afb_context_close(&xreq->context);
496 afb_xreq_fail_f(xreq, "denied", "invalid token's identity");
502 if ((sessionflags & AFB_SESSION_LOA_GE_V1) != 0) {
503 loa = (sessionflags >> AFB_SESSION_LOA_SHIFT_V1) & AFB_SESSION_LOA_MASK_V1;
504 if (!afb_context_check_loa(&xreq->context, loa)) {
505 afb_xreq_fail_f(xreq, "denied", "invalid LOA");
511 if ((sessionflags & AFB_SESSION_LOA_LE_V1) != 0) {
512 loa = (sessionflags >> AFB_SESSION_LOA_SHIFT_V1) & AFB_SESSION_LOA_MASK_V1;
513 if (afb_context_check_loa(&xreq->context, loa + 1)) {
514 afb_xreq_fail_f(xreq, "denied", "invalid LOA");
520 if ((sessionflags & AFB_SESSION_RENEW_V1) != 0) {
521 afb_context_refresh(&xreq->context);
523 if ((sessionflags & AFB_SESSION_CLOSE_V1) != 0) {
524 afb_context_change_loa(&xreq->context, 0);
525 afb_context_close(&xreq->context);
531 static int xreq_session_check_apply_v2(struct afb_xreq *xreq, uint32_t sessionflags, const struct afb_auth *auth)
535 if (sessionflags != 0) {
536 if (!afb_context_check(&xreq->context)) {
537 afb_context_close(&xreq->context);
538 afb_xreq_fail_f(xreq, "denied", "invalid token's identity");
544 loa = (int)(sessionflags & AFB_SESSION_LOA_MASK_V2);
545 if (loa && !afb_context_check_loa(&xreq->context, loa)) {
546 afb_xreq_fail_f(xreq, "denied", "invalid LOA");
551 if (auth && !afb_auth_check(auth, xreq)) {
552 afb_xreq_fail_f(xreq, "denied", "authorisation refused");
557 if ((sessionflags & AFB_SESSION_REFRESH_V2) != 0) {
558 afb_context_refresh(&xreq->context);
560 if ((sessionflags & AFB_SESSION_CLOSE_V2) != 0) {
561 afb_context_close(&xreq->context);
567 void afb_xreq_call_verb_v1(struct afb_xreq *xreq, const struct afb_verb_desc_v1 *verb)
570 afb_xreq_fail_unknown_verb(xreq);
572 if (!xreq_session_check_apply_v1(xreq, verb->session))
573 verb->callback(to_req(xreq));
576 void afb_xreq_call_verb_v2(struct afb_xreq *xreq, const struct afb_verb_v2 *verb)
579 afb_xreq_fail_unknown_verb(xreq);
581 if (!xreq_session_check_apply_v2(xreq, verb->session, verb->auth))
582 verb->callback(to_req(xreq));
585 void afb_xreq_init(struct afb_xreq *xreq, const struct afb_xreq_query_itf *queryitf)
587 memset(xreq, 0, sizeof *xreq);
589 xreq->queryitf = queryitf;
592 void afb_xreq_fail_unknown_api(struct afb_xreq *xreq)
594 afb_xreq_fail_f(xreq, "unknown-api", "api %s not found (for verb %s)", xreq->api, xreq->verb);
597 void afb_xreq_fail_unknown_verb(struct afb_xreq *xreq)
599 afb_xreq_fail_f(xreq, "unknown-verb", "verb %s unknown within api %s", xreq->verb, xreq->api);
602 static void process_sync(struct afb_xreq *xreq)
607 afb_hook_init_xreq(xreq);
609 afb_hook_xreq_begin(xreq);
612 if (afb_apiset_get(xreq->apiset, xreq->api, &api) < 0) {
613 afb_xreq_fail_f(xreq, "unknown-api", "api %s not found", xreq->api);
615 xreq->context.api_key = api.closure;
616 api.itf->call(api.closure, xreq);
620 static void process_async(int signum, void *arg)
622 struct afb_xreq *xreq = arg;
625 afb_xreq_fail_f(xreq, "aborted", "signal %s(%d) caught", strsignal(signum), signum);
629 afb_xreq_unref(xreq);
632 void afb_xreq_process(struct afb_xreq *xreq, struct afb_apiset *apiset)
634 xreq->apiset = apiset;
636 afb_xreq_addref(xreq);
637 if (jobs_queue(NULL, afb_apiset_timeout_get(apiset), process_async, xreq) < 0) {
638 /* TODO: allows or not to proccess it directly as when no threading? (see above) */
639 ERROR("can't process job with threads: %m");
640 afb_xreq_fail_f(xreq, "cancelled", "not able to create a job for the task");
641 afb_xreq_unref(xreq);
643 afb_xreq_unref(xreq);