2 * Copyright (C) 2014 John Crispin <blogic@openwrt.org>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU Lesser General Public License version 2.1
6 * as published by the Free Software Foundation
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
14 #include <sys/types.h>
15 #include <arpa/inet.h>
20 #include <libubox/vlist.h>
21 #include <libubox/uloop.h>
27 #include "interface.h"
29 static struct ubus_auto_conn conn
;
30 static struct blob_buf b
;
31 static struct ubus_subscriber udebug_sub
;
34 umdns_reload(struct ubus_context
*ctx
, struct ubus_object
*obj
,
35 struct ubus_request_data
*req
, const char *method
,
36 struct blob_attr
*msg
)
43 umdns_update(struct ubus_context
*ctx
, struct ubus_object
*obj
,
44 struct ubus_request_data
*req
, const char *method
,
45 struct blob_attr
*msg
)
58 static const struct blobmsg_policy browse_policy
[] = {
59 [BROWSE_SERVICE
] = { "service", BLOBMSG_TYPE_STRING
},
60 [BROWSE_ARRAY
] = { "array", BLOBMSG_TYPE_BOOL
},
61 [BROWSE_ADDRESS
] = { "address", BLOBMSG_TYPE_BOOL
},
65 umdns_browse(struct ubus_context
*ctx
, struct ubus_object
*obj
,
66 struct ubus_request_data
*req
, const char *method
,
67 struct blob_attr
*msg
)
69 struct cache_service
*s
, *q
;
70 char *buffer
= (char *) mdns_buf
;
71 struct blob_attr
*data
[BROWSE_MAX
];
77 blobmsg_parse(browse_policy
, BROWSE_MAX
, data
, blob_data(msg
), blob_len(msg
));
78 if (data
[BROWSE_SERVICE
])
79 service
= blobmsg_get_string(data
[BROWSE_SERVICE
]);
80 if (data
[BROWSE_ARRAY
])
81 array
= blobmsg_get_u8(data
[BROWSE_ARRAY
]);
82 if (data
[BROWSE_ADDRESS
])
83 address
= blobmsg_get_bool(data
[BROWSE_ADDRESS
]);
86 avl_for_each_element(&services
, s
, avl
) {
87 const char *hostname
= buffer
;
90 snprintf(buffer
, MAX_NAME_LEN
, "%s", (const char *) s
->avl
.key
);
91 local
= strstr(buffer
, ".local");
94 if (!strcmp(buffer
, "_tcp") || !strcmp(buffer
, "_udp"))
96 if (service
&& strcmp(buffer
, service
))
99 c1
= blobmsg_open_table(&b
, buffer
);
101 snprintf(buffer
, MAX_NAME_LEN
, "%s", s
->entry
);
102 local
= strstr(buffer
, "._");
105 c2
= blobmsg_open_table(&b
, buffer
);
106 strncat(buffer
, ".local", MAX_NAME_LEN
);
107 blobmsg_add_string(&b
, "iface", s
->iface
->name
);
108 cache_dump_records(&b
, s
->entry
, array
, &hostname
);
110 cache_dump_records(&b
, hostname
, array
, NULL
);
111 blobmsg_close_table(&b
, c2
);
112 q
= avl_next_element(s
, avl
);
113 if (!q
|| avl_is_last(&services
, &s
->avl
) || strcmp(s
->avl
.key
, q
->avl
.key
)) {
114 blobmsg_close_table(&b
, c1
);
118 ubus_send_reply(ctx
, req
, b
.head
);
120 return UBUS_STATUS_OK
;
127 static const struct blobmsg_policy hosts_policy
[] = {
128 [HOSTS_ARRAY
] = { "array", BLOBMSG_TYPE_BOOL
}
132 umdns_hosts(struct ubus_context
*ctx
, struct ubus_object
*obj
,
133 struct ubus_request_data
*req
, const char *method
,
134 struct blob_attr
*msg
)
136 struct cache_record
*prev
= NULL
;
137 struct blob_attr
*tb
[__HOSTS_MAX
];
138 struct cache_record
*r
;
142 blobmsg_parse(hosts_policy
, __HOSTS_MAX
, tb
, blobmsg_data(msg
), blobmsg_len(msg
));
144 array
= blobmsg_get_bool(tb
[HOSTS_ARRAY
]);
146 blob_buf_init(&b
, 0);
147 avl_for_each_element(&records
, r
, avl
) {
148 if (r
->type
!= TYPE_A
&& r
->type
!= TYPE_AAAA
)
150 /* Query each domain just once */
151 if (!prev
|| strcmp(r
->record
, prev
->record
)) {
152 c
= blobmsg_open_table(&b
, r
->record
);
153 cache_dump_records(&b
, r
->record
, array
, NULL
);
154 blobmsg_close_table(&b
, c
);
158 ubus_send_reply(ctx
, req
, b
.head
);
160 return UBUS_STATUS_OK
;
169 static const struct blobmsg_policy config_policy
[] = {
170 [CFG_INTERFACES
] = { "interfaces", BLOBMSG_TYPE_ARRAY
},
171 [CFG_KEEP
] = { "keep", BLOBMSG_TYPE_BOOL
},
175 umdns_set_config(struct ubus_context
*ctx
, struct ubus_object
*obj
,
176 struct ubus_request_data
*req
, const char *method
,
177 struct blob_attr
*msg
)
179 struct blob_attr
*data
[CFG_MAX
], *cur
;
180 int rem
, keep
= false;
182 blobmsg_parse(config_policy
, CFG_MAX
, data
, blob_data(msg
), blob_len(msg
));
183 if (!data
[CFG_INTERFACES
])
184 return UBUS_STATUS_INVALID_ARGUMENT
;
186 if (!blobmsg_check_attr_list(data
[CFG_INTERFACES
], BLOBMSG_TYPE_STRING
))
187 return UBUS_STATUS_INVALID_ARGUMENT
;
189 keep
= data
[CFG_KEEP
] && blobmsg_get_bool(data
[CFG_KEEP
]);
191 vlist_update(&interfaces
);
192 ubus_notify(ctx
, obj
, "set_config", NULL
, 1000);
195 blobmsg_for_each_attr(cur
, data
[CFG_INTERFACES
], rem
)
196 interface_add(blobmsg_data(cur
));
199 vlist_flush(&interfaces
);
211 static const struct blobmsg_policy query_policy
[QUERY_MAX
] = {
212 [QUERY_QUESTION
]= { "question", BLOBMSG_TYPE_STRING
},
213 [QUERY_IFACE
] = { "interface", BLOBMSG_TYPE_STRING
},
214 [QUERY_TYPE
] = { "type", BLOBMSG_TYPE_INT32
},
218 umdns_query(struct ubus_context
*ctx
, struct ubus_object
*obj
,
219 struct ubus_request_data
*req
, const char *method
,
220 struct blob_attr
*msg
)
222 struct blob_attr
*tb
[QUERY_MAX
], *c
;
223 const char *question
= C_DNS_SD
;
227 blobmsg_parse(query_policy
, QUERY_MAX
, tb
, blob_data(msg
), blob_len(msg
));
229 if (!(c
= tb
[QUERY_IFACE
]))
230 return UBUS_STATUS_INVALID_ARGUMENT
;
232 ifname
= blobmsg_get_string(c
);
234 if ((c
= tb
[QUERY_QUESTION
]))
235 question
= blobmsg_get_string(c
);
237 if ((c
= tb
[QUERY_TYPE
]))
238 type
= blobmsg_get_u32(c
);
240 struct interface
*iface_v4
= interface_get(ifname
, SOCK_MC_IPV4
);
241 struct interface
*iface_v6
= interface_get(ifname
, SOCK_MC_IPV6
);
243 if (!iface_v4
&& !iface_v6
)
244 return UBUS_STATUS_NOT_FOUND
;
246 if (!strcmp(method
, "query")) {
248 dns_send_question(iface_v4
, NULL
, question
, type
, 1);
251 dns_send_question(iface_v6
, NULL
, question
, type
, 1);
253 return UBUS_STATUS_OK
;
254 } else if (!strcmp(method
, "fetch")) {
255 blob_buf_init(&b
, 0);
256 void *k
= blobmsg_open_array(&b
, "records");
257 cache_dump_recursive(&b
, question
, type
, iface_v4
? iface_v4
: iface_v6
);
258 blobmsg_close_array(&b
, k
);
259 ubus_send_reply(ctx
, req
, b
.head
);
260 return UBUS_STATUS_OK
;
262 return UBUS_STATUS_INVALID_ARGUMENT
;
267 static const struct ubus_method umdns_methods
[] = {
268 UBUS_METHOD("set_config", umdns_set_config
, config_policy
),
269 UBUS_METHOD("query", umdns_query
, query_policy
),
270 UBUS_METHOD("fetch", umdns_query
, query_policy
),
271 UBUS_METHOD("browse", umdns_browse
, browse_policy
),
272 UBUS_METHOD_NOARG("update", umdns_update
),
273 UBUS_METHOD("hosts", umdns_hosts
, hosts_policy
),
274 UBUS_METHOD_NOARG("reload", umdns_reload
),
277 static struct ubus_object_type umdns_object_type
=
278 UBUS_OBJECT_TYPE("umdns", umdns_methods
);
280 static struct ubus_object umdns_object
= {
282 .type
= &umdns_object_type
,
283 .methods
= umdns_methods
,
284 .n_methods
= ARRAY_SIZE(umdns_methods
),
287 static struct blob_attr
*
288 find_attr(struct blob_attr
*attr
, const char *name
, enum blobmsg_type type
)
290 struct blobmsg_policy policy
= { name
, type
};
291 struct blob_attr
*ret
;
296 blobmsg_parse_attr(&policy
, 1, &ret
, attr
);
302 umdns_udebug_config_cb(struct blob_attr
*data
)
308 static const struct blobmsg_policy policy
[__CFG_ATTR_MAX
] = {
309 [CFG_ATTR_ENABLED
] = { "enabled", BLOBMSG_TYPE_STRING
},
311 struct blob_attr
*tb
[__CFG_ATTR_MAX
];
314 data
= find_attr(data
, "service", BLOBMSG_TYPE_TABLE
);
315 data
= find_attr(data
, "umdns", BLOBMSG_TYPE_TABLE
);
319 blobmsg_parse_attr(policy
, __CFG_ATTR_MAX
, tb
, data
);
320 if (!tb
[CFG_ATTR_ENABLED
])
323 en
= !!atoi(blobmsg_get_string(tb
[CFG_ATTR_ENABLED
]));
324 umdns_udebug_set_enabled(en
);
328 umdns_udebug_notify_cb(struct ubus_context
*ctx
, struct ubus_object
*obj
,
329 struct ubus_request_data
*req
, const char *method
,
330 struct blob_attr
*msg
)
332 umdns_udebug_config_cb(msg
);
338 umdns_udebug_req_cb(struct ubus_request
*req
, int type
, struct blob_attr
*msg
)
340 umdns_udebug_config_cb(msg
);
344 umdns_udebug_sub_cb(struct ubus_context
*ctx
, struct ubus_subscriber
*sub
,
347 return !strcmp(path
, "udebug");
352 ubus_connect_handler(struct ubus_context
*ctx
)
357 ret
= ubus_add_object(ctx
, &umdns_object
);
359 fprintf(stderr
, "Failed to add object: %s\n", ubus_strerror(ret
));
361 udebug_sub
.cb
= umdns_udebug_notify_cb
;
362 udebug_sub
.new_obj_cb
= umdns_udebug_sub_cb
;
363 ubus_register_subscriber(&conn
.ctx
, &udebug_sub
);
364 if (ubus_lookup_id(&conn
.ctx
, "udebug", &id
) == 0) {
365 ubus_subscribe(&conn
.ctx
, &udebug_sub
, id
);
366 ubus_invoke(&conn
.ctx
, id
, "get_config", NULL
, umdns_udebug_req_cb
, NULL
, 1000);
373 conn
.cb
= ubus_connect_handler
;
374 ubus_auto_connect(&conn
);
377 int ubus_service_list(ubus_data_handler_t cb
)
382 blob_buf_init(&b
, 0);
383 ret
= ubus_lookup_id(&conn
.ctx
, "service", &id
);
387 return ubus_invoke(&conn
.ctx
, id
, "list", b
.head
, cb
, NULL
, 5 * 1000);