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
;
33 umdns_reload(struct ubus_context
*ctx
, struct ubus_object
*obj
,
34 struct ubus_request_data
*req
, const char *method
,
35 struct blob_attr
*msg
)
42 umdns_update(struct ubus_context
*ctx
, struct ubus_object
*obj
,
43 struct ubus_request_data
*req
, const char *method
,
44 struct blob_attr
*msg
)
56 static const struct blobmsg_policy browse_policy
[] = {
57 [BROWSE_SERVICE
] = { "service", BLOBMSG_TYPE_STRING
},
58 [BROWSE_ARRAY
] = { "array", BLOBMSG_TYPE_BOOL
},
62 umdns_browse(struct ubus_context
*ctx
, struct ubus_object
*obj
,
63 struct ubus_request_data
*req
, const char *method
,
64 struct blob_attr
*msg
)
66 struct cache_service
*s
, *q
;
67 char *buffer
= (char *) mdns_buf
;
68 struct blob_attr
*data
[BROWSE_MAX
];
73 blobmsg_parse(browse_policy
, BROWSE_MAX
, data
, blob_data(msg
), blob_len(msg
));
74 if (data
[BROWSE_SERVICE
])
75 service
= blobmsg_get_string(data
[BROWSE_SERVICE
]);
76 if (data
[BROWSE_ARRAY
])
77 array
= blobmsg_get_u8(data
[BROWSE_ARRAY
]);
80 avl_for_each_element(&services
, s
, avl
) {
83 snprintf(buffer
, MAX_NAME_LEN
, "%s", (const char *) s
->avl
.key
);
84 local
= strstr(buffer
, ".local");
87 if (!strcmp(buffer
, "_tcp") || !strcmp(buffer
, "_udp"))
89 if (service
&& strcmp(buffer
, service
))
92 c1
= blobmsg_open_table(&b
, buffer
);
94 snprintf(buffer
, MAX_NAME_LEN
, "%s", s
->entry
);
95 local
= strstr(buffer
, "._");
98 c2
= blobmsg_open_table(&b
, buffer
);
99 strncat(buffer
, ".local", MAX_NAME_LEN
);
100 cache_dump_records(&b
, buffer
, array
);
101 cache_dump_records(&b
, s
->entry
, array
);
102 blobmsg_close_table(&b
, c2
);
103 q
= avl_next_element(s
, avl
);
104 if (!q
|| avl_is_last(&services
, &s
->avl
) || strcmp(s
->avl
.key
, q
->avl
.key
)) {
105 blobmsg_close_table(&b
, c1
);
109 ubus_send_reply(ctx
, req
, b
.head
);
111 return UBUS_STATUS_OK
;
115 umdns_hosts(struct ubus_context
*ctx
, struct ubus_object
*obj
,
116 struct ubus_request_data
*req
, const char *method
,
117 struct blob_attr
*msg
)
119 struct cache_record
*prev
= NULL
;
120 struct cache_record
*r
;
123 blob_buf_init(&b
, 0);
124 avl_for_each_element(&records
, r
, avl
) {
125 if (r
->type
!= TYPE_A
&& r
->type
!= TYPE_AAAA
)
127 /* Query each domain just once */
128 if (!prev
|| strcmp(r
->record
, prev
->record
)) {
129 c
= blobmsg_open_table(&b
, r
->record
);
130 cache_dump_records(&b
, r
->record
, false);
131 blobmsg_close_table(&b
, c
);
135 ubus_send_reply(ctx
, req
, b
.head
);
137 return UBUS_STATUS_OK
;
146 static const struct blobmsg_policy config_policy
[] = {
147 [CFG_INTERFACES
] = { "interfaces", BLOBMSG_TYPE_ARRAY
},
148 [CFG_KEEP
] = { "keep", BLOBMSG_TYPE_BOOL
},
152 umdns_set_config(struct ubus_context
*ctx
, struct ubus_object
*obj
,
153 struct ubus_request_data
*req
, const char *method
,
154 struct blob_attr
*msg
)
156 struct blob_attr
*data
[CFG_MAX
], *cur
;
157 int rem
, keep
= false;
159 blobmsg_parse(config_policy
, CFG_MAX
, data
, blob_data(msg
), blob_len(msg
));
160 if (!data
[CFG_INTERFACES
])
161 return UBUS_STATUS_INVALID_ARGUMENT
;
163 if (!blobmsg_check_attr_list(data
[CFG_INTERFACES
], BLOBMSG_TYPE_STRING
))
164 return UBUS_STATUS_INVALID_ARGUMENT
;
166 keep
= data
[CFG_KEEP
] && blobmsg_get_bool(data
[CFG_KEEP
]);
168 vlist_update(&interfaces
);
169 ubus_notify(ctx
, obj
, "set_config", NULL
, 1000);
172 blobmsg_for_each_attr(cur
, data
[CFG_INTERFACES
], rem
)
173 interface_add(blobmsg_data(cur
));
176 vlist_flush(&interfaces
);
188 static const struct blobmsg_policy query_policy
[QUERY_MAX
] = {
189 [QUERY_QUESTION
]= { "question", BLOBMSG_TYPE_STRING
},
190 [QUERY_IFACE
] = { "interface", BLOBMSG_TYPE_STRING
},
191 [QUERY_TYPE
] = { "type", BLOBMSG_TYPE_INT32
},
195 umdns_query(struct ubus_context
*ctx
, struct ubus_object
*obj
,
196 struct ubus_request_data
*req
, const char *method
,
197 struct blob_attr
*msg
)
199 struct blob_attr
*tb
[QUERY_MAX
], *c
;
200 const char *question
= C_DNS_SD
;
204 blobmsg_parse(query_policy
, QUERY_MAX
, tb
, blob_data(msg
), blob_len(msg
));
206 if (!(c
= tb
[QUERY_IFACE
]))
207 return UBUS_STATUS_INVALID_ARGUMENT
;
209 ifname
= blobmsg_get_string(c
);
211 if ((c
= tb
[QUERY_QUESTION
]))
212 question
= blobmsg_get_string(c
);
214 if ((c
= tb
[QUERY_TYPE
]))
215 type
= blobmsg_get_u32(c
);
217 struct interface
*iface_v4
= interface_get(ifname
, 0, 1);
218 struct interface
*iface_v6
= interface_get(ifname
, 1, 1);
220 if (!iface_v4
&& !iface_v6
)
221 return UBUS_STATUS_NOT_FOUND
;
223 if (!strcmp(method
, "query")) {
225 dns_send_question(iface_v4
, NULL
, question
, type
, 1);
228 dns_send_question(iface_v6
, NULL
, question
, type
, 1);
230 return UBUS_STATUS_OK
;
231 } else if (!strcmp(method
, "fetch")) {
232 blob_buf_init(&b
, 0);
233 void *k
= blobmsg_open_array(&b
, "records");
234 cache_dump_recursive(&b
, question
, type
, iface_v4
? iface_v4
: iface_v6
);
235 blobmsg_close_array(&b
, k
);
236 ubus_send_reply(ctx
, req
, b
.head
);
237 return UBUS_STATUS_OK
;
239 return UBUS_STATUS_INVALID_ARGUMENT
;
244 static const struct ubus_method umdns_methods
[] = {
245 UBUS_METHOD("set_config", umdns_set_config
, config_policy
),
246 UBUS_METHOD("query", umdns_query
, query_policy
),
247 UBUS_METHOD("fetch", umdns_query
, query_policy
),
248 UBUS_METHOD("browse", umdns_browse
, browse_policy
),
249 UBUS_METHOD_NOARG("update", umdns_update
),
250 UBUS_METHOD_NOARG("hosts", umdns_hosts
),
251 UBUS_METHOD_NOARG("reload", umdns_reload
),
254 static struct ubus_object_type umdns_object_type
=
255 UBUS_OBJECT_TYPE("umdns", umdns_methods
);
257 static struct ubus_object umdns_object
= {
259 .type
= &umdns_object_type
,
260 .methods
= umdns_methods
,
261 .n_methods
= ARRAY_SIZE(umdns_methods
),
265 ubus_connect_handler(struct ubus_context
*ctx
)
269 ret
= ubus_add_object(ctx
, &umdns_object
);
271 fprintf(stderr
, "Failed to add object: %s\n", ubus_strerror(ret
));
277 conn
.cb
= ubus_connect_handler
;
278 ubus_auto_connect(&conn
);
281 int ubus_service_list(ubus_data_handler_t cb
)
286 blob_buf_init(&b
, 0);
287 ret
= ubus_lookup_id(&conn
.ctx
, "service", &id
);
291 return ubus_invoke(&conn
.ctx
, id
, "list", b
.head
, cb
, NULL
, 5 * 1000);