4 static struct blob_buf b;
5 static struct ubus_msg_buf *retmsg;
6 static int *retmsg_data;
8 static struct blob_attr *attrbuf[UBUS_ATTR_MAX];
10 typedef int (*ubus_cmd_cb)(struct ubus_client *cl, struct ubus_msg_buf *ub, struct blob_attr **attr);
12 static const struct blob_attr_info ubus_policy[UBUS_ATTR_MAX] = {
13 [UBUS_ATTR_SIGNATURE] = { .type = BLOB_ATTR_NESTED },
14 [UBUS_ATTR_OBJTYPE] = { .type = BLOB_ATTR_INT32 },
15 [UBUS_ATTR_OBJPATH] = { .type = BLOB_ATTR_STRING },
16 [UBUS_ATTR_OBJID] = { .type = BLOB_ATTR_INT32 },
17 [UBUS_ATTR_STATUS] = { .type = BLOB_ATTR_INT32 },
20 struct blob_attr **ubus_parse_msg(struct blob_attr *msg)
22 blob_parse(msg, attrbuf, ubus_policy, UBUS_ATTR_MAX);
26 static void ubus_msg_init(struct ubus_msg_buf *ub, uint8_t type, uint16_t seq, uint32_t peer)
34 static struct ubus_msg_buf *ubus_msg_from_blob(bool shared)
36 return ubus_msg_new(b.head, blob_raw_len(b.head), shared);
39 static struct ubus_msg_buf *ubus_reply_from_blob(struct ubus_msg_buf *ub, bool shared)
41 struct ubus_msg_buf *new;
43 new = ubus_msg_new(b.head, blob_raw_len(b.head), shared);
47 ubus_msg_init(new, UBUS_MSG_DATA, ub->hdr.seq, ub->hdr.peer);
51 bool ubusd_send_hello(struct ubus_client *cl)
53 struct ubus_msg_buf *ub;
56 ub = ubus_msg_from_blob(true);
60 ubus_msg_init(ub, UBUS_MSG_HELLO, 0, cl->id.id);
61 ubus_msg_send(cl, ub);
65 static int ubusd_send_pong(struct ubus_client *cl, struct ubus_msg_buf *ub, struct blob_attr **attr)
67 ub->hdr.type = UBUS_MSG_DATA;
68 ubus_msg_send(cl, ubus_msg_ref(ub));
72 static int ubusd_handle_publish(struct ubus_client *cl, struct ubus_msg_buf *ub, struct blob_attr **attr)
74 struct ubus_object *obj;
76 obj = ubusd_create_object(cl, attr);
78 return UBUS_STATUS_INVALID_ARGUMENT;
81 blob_put_int32(&b, UBUS_ATTR_OBJID, obj->id.id);
82 if (attr[UBUS_ATTR_SIGNATURE])
83 blob_put_int32(&b, UBUS_ATTR_OBJTYPE, obj->type->id.id);
85 ub = ubus_reply_from_blob(ub, true);
87 return UBUS_STATUS_NO_DATA;
89 ubus_msg_send(cl, ub);
93 static void ubusd_send_obj(struct ubus_client *cl, struct ubus_msg_buf *ub, struct ubus_object *obj)
95 struct ubus_method *m;
101 blob_put_string(&b, UBUS_ATTR_OBJPATH, obj->path.key);
102 blob_put_int32(&b, UBUS_ATTR_OBJID, obj->id.id);
104 s = blob_nest_start(&b, UBUS_ATTR_SIGNATURE);
105 list_for_each_entry(m, &obj->type->methods, list)
106 blob_put(&b, blob_id(m->data), blob_data(m->data), blob_len(m->data));
107 blob_nest_end(&b, s);
109 ub = ubus_reply_from_blob(ub, true);
113 ubus_msg_send(cl, ub);
116 static int ubusd_handle_lookup(struct ubus_client *cl, struct ubus_msg_buf *ub, struct blob_attr **attr)
118 struct ubus_object *obj;
120 bool wildcard = false;
124 if (!attr[UBUS_ATTR_OBJPATH]) {
125 avl_for_each_element(&path, obj, path)
126 ubusd_send_obj(cl, ub, obj);
130 objpath = blob_data(attr[UBUS_ATTR_OBJPATH]);
131 len = strlen(objpath);
132 if (objpath[len - 1] != '*') {
133 obj = avl_find_element(&path, objpath, obj, path);
135 return UBUS_STATUS_NOT_FOUND;
137 ubusd_send_obj(cl, ub, obj);
144 obj = avl_find_ge_element(&path, objpath, obj, path);
146 return UBUS_STATUS_NOT_FOUND;
148 while (!strncmp(objpath, obj->path.key, len)) {
150 ubusd_send_obj(cl, ub, obj);
151 if (obj == avl_last_element(&path, obj, path))
153 obj = avl_next_element(obj, path);
157 return UBUS_STATUS_NOT_FOUND;
162 static int ubusd_handle_invoke(struct ubus_client *cl, struct ubus_msg_buf *ub, struct blob_attr **attr)
164 struct ubus_object *obj = NULL;
168 if (!attr[UBUS_ATTR_METHOD] || !attr[UBUS_ATTR_OBJID])
169 return UBUS_STATUS_INVALID_ARGUMENT;
171 id = ubus_find_id(&objects, blob_get_int32(attr[UBUS_ATTR_OBJID]));
173 return UBUS_STATUS_NOT_FOUND;
175 obj = container_of(id, struct ubus_object, id);
177 method = blob_data(attr[UBUS_ATTR_METHOD]);
178 blob_buf_init(&b, 0);
179 blob_put_int32(&b, UBUS_ATTR_OBJID, obj->id.id);
180 blob_put_string(&b, UBUS_ATTR_METHOD, method);
181 if (attr[UBUS_ATTR_DATA])
182 blob_put(&b, UBUS_ATTR_DATA, blob_data(attr[UBUS_ATTR_DATA]),
183 blob_len(attr[UBUS_ATTR_DATA]));
187 ub = ubus_reply_from_blob(ub, true);
189 return UBUS_STATUS_NO_DATA;
191 ub->hdr.type = UBUS_MSG_INVOKE;
192 ub->hdr.peer = cl->id.id;
193 ubus_msg_send(obj->client, ub);
198 static int ubusd_handle_response(struct ubus_client *cl, struct ubus_msg_buf *ub, struct blob_attr **attr)
200 struct ubus_object *obj;
203 if (!attr[UBUS_ATTR_OBJID] ||
204 (ub->hdr.type == UBUS_MSG_STATUS && !attr[UBUS_ATTR_STATUS]) ||
205 (ub->hdr.type == UBUS_MSG_DATA && !attr[UBUS_ATTR_DATA]))
208 id = ubus_find_id(&objects, blob_get_int32(attr[UBUS_ATTR_OBJID]));
212 obj = container_of(id, struct ubus_object, id);
213 if (cl != obj->client)
216 cl = ubusd_get_client_by_id(ub->hdr.peer);
220 ub->hdr.peer = blob_get_int32(attr[UBUS_ATTR_OBJID]);
221 ubus_msg_send(cl, ub);
229 static const ubus_cmd_cb handlers[__UBUS_MSG_LAST] = {
230 [UBUS_MSG_PING] = ubusd_send_pong,
231 [UBUS_MSG_PUBLISH] = ubusd_handle_publish,
232 [UBUS_MSG_LOOKUP] = ubusd_handle_lookup,
233 [UBUS_MSG_INVOKE] = ubusd_handle_invoke,
234 [UBUS_MSG_STATUS] = ubusd_handle_response,
235 [UBUS_MSG_DATA] = ubusd_handle_response,
238 void ubusd_receive_message(struct ubus_client *cl, struct ubus_msg_buf *ub)
240 ubus_cmd_cb cb = NULL;
243 retmsg->hdr.seq = ub->hdr.seq;
244 retmsg->hdr.peer = ub->hdr.peer;
246 if (ub->hdr.type < __UBUS_MSG_LAST)
247 cb = handlers[ub->hdr.type];
250 ret = cb(cl, ub, ubus_parse_msg(ub->data));
252 ret = UBUS_STATUS_INVALID_COMMAND;
259 *retmsg_data = htonl(ret);
260 ubus_msg_send(cl, ubus_msg_ref(retmsg));
263 static void __init ubusd_proto_init(void)
265 blob_buf_init(&b, 0);
266 blob_put_int32(&b, UBUS_ATTR_STATUS, 0);
268 retmsg = ubus_msg_from_blob(false);
272 retmsg->hdr.type = UBUS_MSG_STATUS;
273 retmsg_data = blob_data(blob_data(retmsg->data));