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/afb-request-itf.h>
21 #include "afb-context.h"
24 struct afb_evt_listener;
28 struct afb_api_dyn_verb;
30 struct afb_verb_desc_v1;
33 struct afb_stored_req;
35 struct afb_xreq_query_itf {
36 struct json_object *(*json)(struct afb_xreq *xreq);
37 struct afb_arg (*get)(struct afb_xreq *xreq, const char *name);
38 void (*success)(struct afb_xreq *xreq, struct json_object *obj, const char *info);
39 void (*fail)(struct afb_xreq *xreq, const char *status, const char *info);
40 void (*reply)(struct afb_xreq *xreq, int status, struct json_object *obj);
41 void (*unref)(struct afb_xreq *xreq);
42 int (*subscribe)(struct afb_xreq *xreq, struct afb_eventid *eventid);
43 int (*unsubscribe)(struct afb_xreq *xreq, struct afb_eventid *eventid);
45 struct afb_xreq *xreq,
48 struct json_object *args,
49 void (*callback)(void*, int, struct json_object*),
54 * Internal data for requests
58 struct afb_request request; /**< exported request */
59 struct afb_context context; /**< context of the request */
60 struct afb_apiset *apiset; /**< apiset of the xreq */
61 struct json_object *json; /**< the json object (or NULL) */
62 const struct afb_xreq_query_itf *queryitf; /**< interface of xreq implmentation functions */
63 int refcount; /**< current ref count */
64 int replied; /**< is replied? */
65 int hookflags; /**< flags for hooking */
66 int hookindex; /**< hook index of the request if hooked */
67 struct afb_evt_listener *listener; /**< event listener for the request */
68 struct afb_cred *cred; /**< client credential if revelant */
69 struct afb_xreq *caller; /**< caller request if any */
73 * Macro for retrieve the pointer of a structure of 'type' having a field named 'field'
75 * @param type the type that has the 'field' (ex: "struct mystruct")
76 * @param field the name of the field within the structure 'type'
77 * @param ptr the pointer to an element 'field'
78 * @return the pointer to the structure that contains the 'field' at address 'ptr'
80 #define CONTAINER_OF(type,field,ptr) ((type*)(((char*)(ptr))-((char*)&(((type*)NULL)->field))))
83 * Macro for retrieve the pointer of a structure of 'type' having a field named "xreq"
85 * @param type the type that has the field "xreq" (ex: "struct mystruct")
86 * @param x the pointer to the field "xreq"
87 * @return the pointer to the structure that contains the field "xreq" of address 'x'
89 #define CONTAINER_OF_XREQ(type,x) CONTAINER_OF(type,xreq,x)
91 /* req wrappers for xreq */
92 extern struct afb_req afb_xreq_unstore(struct afb_stored_req *sreq);
93 extern void afb_xreq_addref(struct afb_xreq *xreq);
94 extern void afb_xreq_unref(struct afb_xreq *xreq);
95 extern void afb_xreq_unhooked_addref(struct afb_xreq *xreq);
96 extern void afb_xreq_unhooked_unref(struct afb_xreq *xreq);
98 extern struct json_object *afb_xreq_json(struct afb_xreq *xreq);
100 extern void afb_xreq_success(struct afb_xreq *xreq, struct json_object *obj, const char *info);
101 extern void afb_xreq_success_f(struct afb_xreq *xreq, struct json_object *obj, const char *info, ...);
103 extern void afb_xreq_fail(struct afb_xreq *xreq, const char *status, const char *info);
104 extern void afb_xreq_fail_f(struct afb_xreq *xreq, const char *status, const char *info, ...);
105 extern void afb_xreq_fail_unknown_api(struct afb_xreq *xreq);
106 extern void afb_xreq_fail_unknown_verb(struct afb_xreq *xreq);
108 extern const char *afb_xreq_raw(struct afb_xreq *xreq, size_t *size);
110 extern int afb_xreq_subscribe(struct afb_xreq *xreq, struct afb_eventid *eventid);
111 extern int afb_xreq_unsubscribe(struct afb_xreq *xreq, struct afb_eventid *eventid);
113 extern void afb_xreq_subcall(
114 struct afb_xreq *xreq,
117 struct json_object *args,
118 void (*callback)(void*, int, struct json_object*, struct afb_request *),
120 extern void afb_xreq_unhooked_subcall(
121 struct afb_xreq *xreq,
124 struct json_object *args,
125 void (*callback)(void*, int, struct json_object*, struct afb_request *),
128 extern int afb_xreq_unhooked_subcall_sync(
129 struct afb_xreq *xreq,
132 struct json_object *args,
133 struct json_object **result);
134 extern int afb_xreq_subcall_sync(
135 struct afb_xreq *xreq,
138 struct json_object *args,
139 struct json_object **result);
141 /* initialisation and processing of xreq */
142 extern void afb_xreq_init(struct afb_xreq *xreq, const struct afb_xreq_query_itf *queryitf);
144 extern void afb_xreq_process(struct afb_xreq *xreq, struct afb_apiset *apiset);
146 extern void afb_xreq_call_verb_v1(struct afb_xreq *xreq, const struct afb_verb_desc_v1 *verb);
147 extern void afb_xreq_call_verb_v2(struct afb_xreq *xreq, const struct afb_verb_v2 *verb);
148 extern void afb_xreq_call_verb_vdyn(struct afb_xreq *xreq, const struct afb_api_dyn_verb *verb);
150 static inline struct afb_request *xreq_to_request(struct afb_xreq *xreq)
152 return &xreq->request;
155 static inline struct afb_xreq *xreq_from_request(struct afb_request *request)
157 return CONTAINER_OF(struct afb_xreq, request, request);