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 static 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
, true);
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
, ub
, false);
72 static int ubusd_handle_remove_object(struct ubus_client
*cl
, struct ubus_msg_buf
*ub
, struct blob_attr
**attr
)
74 struct ubus_object
*obj
;
76 if (!attr
[UBUS_ATTR_OBJID
])
77 return UBUS_STATUS_INVALID_ARGUMENT
;
79 obj
= ubusd_find_object(blob_get_u32(attr
[UBUS_ATTR_OBJID
]));
81 return UBUS_STATUS_NOT_FOUND
;
83 if (obj
->client
!= cl
)
84 return UBUS_STATUS_PERMISSION_DENIED
;
87 blob_put_int32(&b
, UBUS_ATTR_OBJID
, obj
->id
.id
);
89 /* check if we're removing the object type as well */
90 if (obj
->type
&& obj
->type
->refcount
== 1)
91 blob_put_int32(&b
, UBUS_ATTR_OBJTYPE
, obj
->type
->id
.id
);
93 ubusd_free_object(obj
);
95 ub
= ubus_reply_from_blob(ub
, true);
97 return UBUS_STATUS_NO_DATA
;
99 ubus_msg_send(cl
, ub
, true);
103 static int ubusd_handle_add_object(struct ubus_client
*cl
, struct ubus_msg_buf
*ub
, struct blob_attr
**attr
)
105 struct ubus_object
*obj
;
107 obj
= ubusd_create_object(cl
, attr
);
109 return UBUS_STATUS_INVALID_ARGUMENT
;
111 blob_buf_init(&b
, 0);
112 blob_put_int32(&b
, UBUS_ATTR_OBJID
, obj
->id
.id
);
113 if (attr
[UBUS_ATTR_SIGNATURE
])
114 blob_put_int32(&b
, UBUS_ATTR_OBJTYPE
, obj
->type
->id
.id
);
116 ub
= ubus_reply_from_blob(ub
, true);
118 return UBUS_STATUS_NO_DATA
;
120 ubus_msg_send(cl
, ub
, true);
124 static void ubusd_send_obj(struct ubus_client
*cl
, struct ubus_msg_buf
*ub
, struct ubus_object
*obj
)
126 struct ubus_method
*m
;
129 blob_buf_init(&b
, 0);
132 blob_put_string(&b
, UBUS_ATTR_OBJPATH
, obj
->path
.key
);
133 blob_put_int32(&b
, UBUS_ATTR_OBJID
, obj
->id
.id
);
134 blob_put_int32(&b
, UBUS_ATTR_OBJTYPE
, obj
->type
->id
.id
);
136 s
= blob_nest_start(&b
, UBUS_ATTR_SIGNATURE
);
137 list_for_each_entry(m
, &obj
->type
->methods
, list
)
138 blob_put(&b
, blob_id(m
->data
), blob_data(m
->data
), blob_len(m
->data
));
139 blob_nest_end(&b
, s
);
141 ub
= ubus_reply_from_blob(ub
, true);
145 ubus_msg_send(cl
, ub
, true);
148 static int ubusd_handle_lookup(struct ubus_client
*cl
, struct ubus_msg_buf
*ub
, struct blob_attr
**attr
)
150 struct ubus_object
*obj
;
152 bool wildcard
= false;
156 if (!attr
[UBUS_ATTR_OBJPATH
]) {
157 avl_for_each_element(&path
, obj
, path
)
158 ubusd_send_obj(cl
, ub
, obj
);
162 objpath
= blob_data(attr
[UBUS_ATTR_OBJPATH
]);
163 len
= strlen(objpath
);
164 if (objpath
[len
- 1] != '*') {
165 obj
= avl_find_element(&path
, objpath
, obj
, path
);
167 return UBUS_STATUS_NOT_FOUND
;
169 ubusd_send_obj(cl
, ub
, obj
);
176 obj
= avl_find_ge_element(&path
, objpath
, obj
, path
);
178 return UBUS_STATUS_NOT_FOUND
;
180 while (!strncmp(objpath
, obj
->path
.key
, len
)) {
182 ubusd_send_obj(cl
, ub
, obj
);
183 if (obj
== avl_last_element(&path
, obj
, path
))
185 obj
= avl_next_element(obj
, path
);
189 return UBUS_STATUS_NOT_FOUND
;
194 static int ubusd_handle_invoke(struct ubus_client
*cl
, struct ubus_msg_buf
*ub
, struct blob_attr
**attr
)
196 struct ubus_object
*obj
= NULL
;
200 if (!attr
[UBUS_ATTR_METHOD
] || !attr
[UBUS_ATTR_OBJID
])
201 return UBUS_STATUS_INVALID_ARGUMENT
;
203 id
= ubus_find_id(&objects
, blob_get_u32(attr
[UBUS_ATTR_OBJID
]));
205 return UBUS_STATUS_NOT_FOUND
;
207 obj
= container_of(id
, struct ubus_object
, id
);
209 method
= blob_data(attr
[UBUS_ATTR_METHOD
]);
212 return obj
->recv_msg(cl
, method
, attr
[UBUS_ATTR_DATA
]);
214 blob_buf_init(&b
, 0);
215 blob_put_int32(&b
, UBUS_ATTR_OBJID
, obj
->id
.id
);
216 blob_put_string(&b
, UBUS_ATTR_METHOD
, method
);
217 if (attr
[UBUS_ATTR_DATA
])
218 blob_put(&b
, UBUS_ATTR_DATA
, blob_data(attr
[UBUS_ATTR_DATA
]),
219 blob_len(attr
[UBUS_ATTR_DATA
]));
223 ub
= ubus_reply_from_blob(ub
, true);
225 return UBUS_STATUS_NO_DATA
;
227 ub
->hdr
.type
= UBUS_MSG_INVOKE
;
228 ub
->hdr
.peer
= cl
->id
.id
;
229 ubus_msg_send(obj
->client
, ub
, true);
234 static struct ubus_client
*ubusd_get_client_by_id(uint32_t id
)
236 struct ubus_id
*clid
;
238 clid
= ubus_find_id(&clients
, id
);
242 return container_of(clid
, struct ubus_client
, id
);
245 static int ubusd_handle_response(struct ubus_client
*cl
, struct ubus_msg_buf
*ub
, struct blob_attr
**attr
)
247 struct ubus_object
*obj
;
249 if (!attr
[UBUS_ATTR_OBJID
] ||
250 (ub
->hdr
.type
== UBUS_MSG_STATUS
&& !attr
[UBUS_ATTR_STATUS
]) ||
251 (ub
->hdr
.type
== UBUS_MSG_DATA
&& !attr
[UBUS_ATTR_DATA
]))
254 obj
= ubusd_find_object(blob_get_u32(attr
[UBUS_ATTR_OBJID
]));
258 if (cl
!= obj
->client
)
261 cl
= ubusd_get_client_by_id(ub
->hdr
.peer
);
265 ub
->hdr
.peer
= blob_get_u32(attr
[UBUS_ATTR_OBJID
]);
266 ubus_msg_send(cl
, ub
, true);
274 static const ubus_cmd_cb handlers
[__UBUS_MSG_LAST
] = {
275 [UBUS_MSG_PING
] = ubusd_send_pong
,
276 [UBUS_MSG_ADD_OBJECT
] = ubusd_handle_add_object
,
277 [UBUS_MSG_REMOVE_OBJECT
] = ubusd_handle_remove_object
,
278 [UBUS_MSG_LOOKUP
] = ubusd_handle_lookup
,
279 [UBUS_MSG_INVOKE
] = ubusd_handle_invoke
,
280 [UBUS_MSG_STATUS
] = ubusd_handle_response
,
281 [UBUS_MSG_DATA
] = ubusd_handle_response
,
284 void ubusd_receive_message(struct ubus_client
*cl
, struct ubus_msg_buf
*ub
)
286 ubus_cmd_cb cb
= NULL
;
289 retmsg
->hdr
.seq
= ub
->hdr
.seq
;
290 retmsg
->hdr
.peer
= ub
->hdr
.peer
;
292 if (ub
->hdr
.type
< __UBUS_MSG_LAST
)
293 cb
= handlers
[ub
->hdr
.type
];
296 ret
= cb(cl
, ub
, ubus_parse_msg(ub
->data
));
298 ret
= UBUS_STATUS_INVALID_COMMAND
;
305 *retmsg_data
= htonl(ret
);
306 ubus_msg_send(cl
, retmsg
, false);
309 static void __init
ubusd_proto_init(void)
311 blob_buf_init(&b
, 0);
312 blob_put_int32(&b
, UBUS_ATTR_STATUS
, 0);
314 retmsg
= ubus_msg_from_blob(false);
318 retmsg
->hdr
.type
= UBUS_MSG_STATUS
;
319 retmsg_data
= blob_data(blob_data(retmsg
->data
));