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.
20 #include "afb-context.h"
23 struct afb_evt_listener;
28 struct afb_verb_desc_v1;
31 struct afb_stored_req;
33 struct afb_xreq_query_itf {
34 struct json_object *(*json)(struct afb_xreq *xreq);
35 struct afb_arg (*get)(struct afb_xreq *xreq, const char *name);
36 void (*success)(struct afb_xreq *xreq, struct json_object *obj, const char *info);
37 void (*fail)(struct afb_xreq *xreq, const char *status, const char *info);
38 void (*reply)(struct afb_xreq *xreq, int status, struct json_object *obj);
39 void (*unref)(struct afb_xreq *xreq);
40 int (*subscribe)(struct afb_xreq *xreq, struct afb_event event);
41 int (*unsubscribe)(struct afb_xreq *xreq, struct afb_event event);
43 struct afb_xreq *xreq,
46 struct json_object *args,
47 void (*callback)(void*, int, struct json_object*),
52 * Internal data for requests
56 struct afb_context context; /**< context of the request */
57 struct afb_apiset *apiset; /**< apiset of the xreq */
58 const char *api; /**< the requested API */
59 const char *verb; /**< the requested VERB */
60 struct json_object *json; /**< the json object (or NULL) */
61 const struct afb_xreq_query_itf *queryitf; /**< interface of xreq implmentation functions */
62 int refcount; /**< current ref count */
63 int replied; /**< is replied? */
64 int hookflags; /**< flags for hooking */
65 int hookindex; /**< index for hooking */
66 struct afb_evt_listener *listener; /**< event listener for the request */
67 struct afb_cred *cred; /**< client credential if revelant */
71 * Macro for retrieve the pointer of a structure of 'type' having a field named 'field'
73 * @param type the type that has the 'field' (ex: "struct mystruct")
74 * @param field the name of the field within the structure 'type'
75 * @param ptr the pointer to an element 'field'
76 * @return the pointer to the structure that contains the 'field' at address 'ptr'
78 #define CONTAINER_OF(type,field,ptr) ((type*)(((intptr_t)(ptr))-((intptr_t)&(((type*)NULL)->field))))
81 * Macro for retrieve the pointer of a structure of 'type' having a field named "xreq"
83 * @param type the type that has the field "xreq" (ex: "struct mystruct")
84 * @param x the pointer to the field "xreq"
85 * @return the pointer to the structure that contains the field "xreq" of address 'x'
87 #define CONTAINER_OF_XREQ(type,x) CONTAINER_OF(type,xreq,x)
89 /* req wrappers for xreq */
90 extern struct afb_req afb_xreq_unstore(struct afb_stored_req *sreq);
91 extern void afb_xreq_addref(struct afb_xreq *xreq);
92 extern void afb_xreq_unref(struct afb_xreq *xreq);
94 extern struct json_object *afb_xreq_json(struct afb_xreq *xreq);
96 extern void afb_xreq_success(struct afb_xreq *xreq, struct json_object *obj, const char *info);
97 extern void afb_xreq_success_f(struct afb_xreq *xreq, struct json_object *obj, const char *info, ...);
99 extern void afb_xreq_fail(struct afb_xreq *xreq, const char *status, const char *info);
100 extern void afb_xreq_fail_f(struct afb_xreq *xreq, const char *status, const char *info, ...);
101 extern void afb_xreq_fail_unknown_api(struct afb_xreq *xreq);
102 extern void afb_xreq_fail_unknown_verb(struct afb_xreq *xreq);
104 extern const char *afb_xreq_raw(struct afb_xreq *xreq, size_t *size);
106 extern int afb_xreq_subscribe(struct afb_xreq *xreq, struct afb_event event);
107 extern int afb_xreq_unsubscribe(struct afb_xreq *xreq, struct afb_event event);
109 extern void afb_xreq_subcall(
110 struct afb_xreq *xreq,
113 struct json_object *args,
114 void (*callback)(void*, int, struct json_object*),
116 extern void afb_xreq_unhooked_subcall(
117 struct afb_xreq *xreq,
120 struct json_object *args,
121 void (*callback)(void*, int, struct json_object*),
124 extern int afb_xreq_unhooked_subcall_sync(
125 struct afb_xreq *xreq,
128 struct json_object *args,
129 struct json_object **result);
130 extern int afb_xreq_subcall_sync(
131 struct afb_xreq *xreq,
134 struct json_object *args,
135 struct json_object **result);
137 /* initialisation and processing of xreq */
138 extern void afb_xreq_init(struct afb_xreq *xreq, const struct afb_xreq_query_itf *queryitf);
140 extern void afb_xreq_process(struct afb_xreq *xreq, struct afb_apiset *apiset);
142 extern void afb_xreq_call_verb_v1(struct afb_xreq *xreq, const struct afb_verb_desc_v1 *verb);
143 extern void afb_xreq_call_verb_v2(struct afb_xreq *xreq, const struct afb_verb_v2 *verb);