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 NO_BINDING_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"
36 static struct json_object *xreq_json_cb(void *closure);
37 static struct afb_arg xreq_get_cb(void *closure, const char *name);
39 static void xreq_success_cb(void *closure, struct json_object *obj, const char *info);
40 static void xreq_fail_cb(void *closure, const char *status, const char *info);
42 static const char *xreq_raw_cb(void *closure, size_t *size);
43 static void xreq_send_cb(void *closure, const char *buffer, size_t size);
45 static void *xreq_context_get_cb(void *closure);
46 static void xreq_context_set_cb(void *closure, void *value, void (*free_value)(void*));
48 static void xreq_addref_cb(void *closure);
49 static void xreq_unref_cb(void *closure);
51 static void xreq_session_close_cb(void *closure);
52 static int xreq_session_set_LOA_cb(void *closure, unsigned level);
54 static int xreq_subscribe_cb(void *closure, struct afb_event event);
55 static int xreq_unsubscribe_cb(void *closure, struct afb_event event);
57 static void xreq_subcall_cb(
61 struct json_object *args,
62 void (*callback)(void*, int, struct json_object*),
65 static int xreq_subcallsync_cb(
69 struct json_object *args,
70 struct json_object **result);
72 const struct afb_req_itf xreq_itf = {
75 .success = xreq_success_cb,
79 .context_get = xreq_context_get_cb,
80 .context_set = xreq_context_set_cb,
81 .addref = xreq_addref_cb,
82 .unref = xreq_unref_cb,
83 .session_close = xreq_session_close_cb,
84 .session_set_LOA = xreq_session_set_LOA_cb,
85 .subscribe = xreq_subscribe_cb,
86 .unsubscribe = xreq_unsubscribe_cb,
87 .subcall = xreq_subcall_cb,
88 .subcallsync = xreq_subcallsync_cb
91 static struct json_object *xreq_json_cb(void *closure)
93 struct afb_xreq *xreq = closure;
94 return xreq->json ? : (xreq->json = xreq->queryitf->json(xreq->query));
97 static struct afb_arg xreq_get_cb(void *closure, const char *name)
99 struct afb_xreq *xreq = closure;
100 if (xreq->queryitf->get)
101 return xreq->queryitf->get(xreq->query, name);
103 return afb_msg_json_get_arg(xreq_json_cb(closure), name);
106 static void xreq_success_cb(void *closure, struct json_object *obj, const char *info)
108 struct afb_xreq *xreq = closure;
109 afb_xreq_success(xreq, obj, info);
112 void afb_xreq_success(struct afb_xreq *xreq, struct json_object *obj, const char *info)
115 ERROR("reply called more than one time!!");
116 json_object_put(obj);
119 if (xreq->queryitf->success)
120 xreq->queryitf->success(xreq->query, obj, info);
122 xreq->queryitf->reply(xreq->query, 0, afb_msg_json_reply_ok(info, obj, &xreq->context, NULL));
126 static void xreq_fail_cb(void *closure, const char *status, const char *info)
128 struct afb_xreq *xreq = closure;
129 afb_xreq_fail(xreq, status, info);
132 void afb_xreq_fail(struct afb_xreq *xreq, const char *status, const char *info)
135 ERROR("reply called more than one time!!");
138 if (xreq->queryitf->fail)
139 xreq->queryitf->fail(xreq->query, status, info);
141 xreq->queryitf->reply(xreq->query, 1, afb_msg_json_reply_error(status, info, &xreq->context, NULL));
145 static const char *xreq_raw_cb(void *closure, size_t *size)
147 struct afb_xreq *xreq = closure;
148 return afb_xreq_raw(xreq, size);
151 const char *afb_xreq_raw(struct afb_xreq *xreq, size_t *size)
153 const char *result = json_object_to_json_string(xreq_json_cb(xreq));
155 *size = strlen(result);
159 static void xreq_send_cb(void *closure, const char *buffer, size_t size)
161 struct json_object *obj = json_tokener_parse(buffer);
163 xreq_success_cb(closure, obj, "fake send");
165 xreq_fail_cb(closure, "fake-send-failed", "fake send");
168 static void *xreq_context_get_cb(void *closure)
170 struct afb_xreq *xreq = closure;
171 return afb_context_get(&xreq->context);
174 static void xreq_context_set_cb(void *closure, void *value, void (*free_value)(void*))
176 struct afb_xreq *xreq = closure;
177 afb_context_set(&xreq->context, value, free_value);
180 static void xreq_addref_cb(void *closure)
182 struct afb_xreq *xreq = closure;
183 afb_xreq_addref(xreq);
186 void afb_xreq_addref(struct afb_xreq *xreq)
191 static void xreq_unref_cb(void *closure)
193 struct afb_xreq *xreq = closure;
194 afb_xreq_unref(xreq);
197 void afb_xreq_unref(struct afb_xreq *xreq)
199 if (!--xreq->refcount) {
200 xreq->queryitf->unref(xreq->query);
204 static void xreq_session_close_cb(void *closure)
206 struct afb_xreq *xreq = closure;
207 afb_context_close(&xreq->context);
210 static int xreq_session_set_LOA_cb(void *closure, unsigned level)
212 struct afb_xreq *xreq = closure;
213 return afb_context_change_loa(&xreq->context, level);
216 static int xreq_subscribe_cb(void *closure, struct afb_event event)
218 struct afb_xreq *xreq = closure;
219 return afb_xreq_subscribe(xreq, event);
222 int afb_xreq_subscribe(struct afb_xreq *xreq, struct afb_event event)
225 return afb_evt_add_watch(xreq->listener, event);
226 if (xreq->queryitf->subscribe)
227 return xreq->queryitf->subscribe(xreq->query, event);
228 ERROR("no event listener, subscription impossible");
233 static int xreq_unsubscribe_cb(void *closure, struct afb_event event)
235 struct afb_xreq *xreq = closure;
236 return afb_xreq_unsubscribe(xreq, event);
239 int afb_xreq_unsubscribe(struct afb_xreq *xreq, struct afb_event event)
242 return afb_evt_remove_watch(xreq->listener, event);
243 if (xreq->queryitf->unsubscribe)
244 return xreq->queryitf->unsubscribe(xreq->query, event);
245 ERROR("no event listener, unsubscription impossible");
250 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)
252 struct afb_xreq *xreq = closure;
254 afb_xreq_subcall(xreq, api, verb, args, callback, cb_closure);
257 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)
259 if (xreq->queryitf->subcall)
260 xreq->queryitf->subcall(xreq->query, api, verb, args, callback, cb_closure);
262 afb_subcall(xreq, api, verb, args, callback, cb_closure);
265 static int xreq_subcallsync_cb(void *closure, const char *api, const char *verb, struct json_object *args, struct json_object **result)
267 struct afb_xreq *xreq = closure;
268 return afb_subcall_sync(xreq, api, verb, args, result);
271 void afb_xreq_success_f(struct afb_xreq *xreq, struct json_object *obj, const char *info, ...)
275 va_start(args, info);
276 if (info == NULL || vasprintf(&message, info, args) < 0)
279 afb_xreq_success(xreq, obj, message);
283 void afb_xreq_fail_f(struct afb_xreq *xreq, const char *status, const char *info, ...)
287 va_start(args, info);
288 if (info == NULL || vasprintf(&message, info, args) < 0)
291 afb_xreq_fail(xreq, status, message);
295 static int xcheck(struct afb_xreq *xreq, int sessionflags)
297 if ((sessionflags & (AFB_SESSION_CREATE|AFB_SESSION_CLOSE|AFB_SESSION_RENEW|AFB_SESSION_CHECK|AFB_SESSION_LOA_EQ)) != 0) {
298 if (!afb_context_check(&xreq->context)) {
299 afb_context_close(&xreq->context);
300 afb_xreq_fail_f(xreq, "failed", "invalid token's identity");
305 if ((sessionflags & AFB_SESSION_CREATE) != 0) {
306 if (afb_context_check_loa(&xreq->context, 1)) {
307 afb_xreq_fail_f(xreq, "failed", "invalid creation state");
310 afb_context_change_loa(&xreq->context, 1);
311 afb_context_refresh(&xreq->context);
314 if ((sessionflags & (AFB_SESSION_CREATE | AFB_SESSION_RENEW)) != 0)
315 afb_context_refresh(&xreq->context);
317 if ((sessionflags & AFB_SESSION_CLOSE) != 0) {
318 afb_context_change_loa(&xreq->context, 0);
319 afb_context_close(&xreq->context);
322 if ((sessionflags & AFB_SESSION_LOA_GE) != 0) {
323 int loa = (sessionflags >> AFB_SESSION_LOA_SHIFT) & AFB_SESSION_LOA_MASK;
324 if (!afb_context_check_loa(&xreq->context, loa)) {
325 afb_xreq_fail_f(xreq, "failed", "invalid LOA");
330 if ((sessionflags & AFB_SESSION_LOA_LE) != 0) {
331 int loa = (sessionflags >> AFB_SESSION_LOA_SHIFT) & AFB_SESSION_LOA_MASK;
332 if (afb_context_check_loa(&xreq->context, loa + 1)) {
333 afb_xreq_fail_f(xreq, "failed", "invalid LOA");
340 void afb_xreq_call(struct afb_xreq *xreq, int sessionflags, void (*method)(struct afb_req req))
342 if (xcheck(xreq, sessionflags))
343 method((struct afb_req){ .itf = &xreq_itf, .closure = xreq });