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
)
51 umdns_browse(struct ubus_context
*ctx
, struct ubus_object
*obj
,
52 struct ubus_request_data
*req
, const char *method
,
53 struct blob_attr
*msg
)
55 struct cache_service
*s
, *q
;
56 char *buffer
= (char *) mdns_buf
;
60 avl_for_each_element(&services
, s
, avl
) {
62 if (cache_service_is_host(s
))
64 snprintf(buffer
, MAX_NAME_LEN
, "%s", (const char *) s
->avl
.key
);
65 local
= strstr(buffer
, ".local");
68 if (!strcmp(buffer
, "_tcp") || !strcmp(buffer
, "_udp"))
72 c1
= blobmsg_open_table(&b
, buffer
);
74 snprintf(buffer
, MAX_NAME_LEN
, "%s", s
->entry
);
75 local
= strstr(buffer
, "._");
78 c2
= blobmsg_open_table(&b
, buffer
);
79 strncat(buffer
, ".local", MAX_NAME_LEN
);
80 cache_dump_records(&b
, buffer
);
81 cache_dump_records(&b
, s
->entry
);
82 blobmsg_close_table(&b
, c2
);
83 q
= avl_next_element(s
, avl
);
84 if (!q
|| avl_is_last(&services
, &s
->avl
) || strcmp(s
->avl
.key
, q
->avl
.key
)) {
85 blobmsg_close_table(&b
, c1
);
89 ubus_send_reply(ctx
, req
, b
.head
);
91 return UBUS_STATUS_OK
;
95 umdns_hosts(struct ubus_context
*ctx
, struct ubus_object
*obj
,
96 struct ubus_request_data
*req
, const char *method
,
97 struct blob_attr
*msg
)
99 struct cache_record
*prev
= NULL
;
100 struct cache_record
*r
;
103 blob_buf_init(&b
, 0);
104 avl_for_each_element(&records
, r
, avl
) {
105 if (r
->type
!= TYPE_A
&& r
->type
!= TYPE_AAAA
)
107 /* Query each domain just once */
108 if (!prev
|| strcmp(r
->record
, prev
->record
)) {
109 c
= blobmsg_open_table(&b
, r
->record
);
110 cache_dump_records(&b
, r
->record
);
111 blobmsg_close_table(&b
, c
);
115 ubus_send_reply(ctx
, req
, b
.head
);
117 return UBUS_STATUS_OK
;
126 static const struct blobmsg_policy config_policy
[] = {
127 [CFG_INTERFACES
] = { "interfaces", BLOBMSG_TYPE_ARRAY
},
128 [CFG_KEEP
] = { "keep", BLOBMSG_TYPE_BOOL
},
132 umdns_set_config(struct ubus_context
*ctx
, struct ubus_object
*obj
,
133 struct ubus_request_data
*req
, const char *method
,
134 struct blob_attr
*msg
)
136 struct blob_attr
*data
[CFG_MAX
], *cur
;
137 int rem
, keep
= false;
139 blobmsg_parse(config_policy
, CFG_MAX
, data
, blob_data(msg
), blob_len(msg
));
140 if (!data
[CFG_INTERFACES
])
141 return UBUS_STATUS_INVALID_ARGUMENT
;
143 if (!blobmsg_check_attr_list(data
[CFG_INTERFACES
], BLOBMSG_TYPE_STRING
))
144 return UBUS_STATUS_INVALID_ARGUMENT
;
146 keep
= data
[CFG_KEEP
] && blobmsg_get_bool(data
[CFG_KEEP
]);
148 vlist_update(&interfaces
);
149 ubus_notify(ctx
, obj
, "set_config", NULL
, 1000);
152 blobmsg_for_each_attr(cur
, data
[CFG_INTERFACES
], rem
)
153 interface_add(blobmsg_data(cur
));
156 vlist_flush(&interfaces
);
168 static const struct blobmsg_policy query_policy
[QUERY_MAX
] = {
169 [QUERY_QUESTION
]= { "question", BLOBMSG_TYPE_STRING
},
170 [QUERY_IFACE
] = { "interface", BLOBMSG_TYPE_STRING
},
171 [QUERY_TYPE
] = { "type", BLOBMSG_TYPE_INT32
},
175 umdns_query(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
*tb
[QUERY_MAX
], *c
;
180 const char *question
= "_services._dns-sd._udp.local";
184 blobmsg_parse(query_policy
, QUERY_MAX
, tb
, blob_data(msg
), blob_len(msg
));
186 if (!(c
= tb
[QUERY_IFACE
]))
187 return UBUS_STATUS_INVALID_ARGUMENT
;
189 ifname
= blobmsg_get_string(c
);
191 if ((c
= tb
[QUERY_QUESTION
]))
192 question
= blobmsg_get_string(c
);
194 if ((c
= tb
[QUERY_TYPE
]))
195 type
= blobmsg_get_u32(c
);
197 struct interface
*iface_v4
= interface_get(ifname
, 0, 1);
198 struct interface
*iface_v6
= interface_get(ifname
, 1, 1);
200 if (!iface_v4
&& !iface_v6
)
201 return UBUS_STATUS_NOT_FOUND
;
203 if (!strcmp(method
, "query")) {
205 dns_send_question(iface_v4
, question
, type
, 1);
208 dns_send_question(iface_v6
, question
, type
, 1);
210 return UBUS_STATUS_OK
;
211 } else if (!strcmp(method
, "fetch")) {
212 blob_buf_init(&b
, 0);
213 void *k
= blobmsg_open_array(&b
, "records");
214 cache_dump_recursive(&b
, question
, type
, iface_v4
? iface_v4
: iface_v6
);
215 blobmsg_close_array(&b
, k
);
216 ubus_send_reply(ctx
, req
, b
.head
);
217 return UBUS_STATUS_OK
;
219 return UBUS_STATUS_INVALID_ARGUMENT
;
224 static const struct ubus_method umdns_methods
[] = {
225 UBUS_METHOD("set_config", umdns_set_config
, config_policy
),
226 UBUS_METHOD("query", umdns_query
, query_policy
),
227 UBUS_METHOD("fetch", umdns_query
, query_policy
),
228 UBUS_METHOD_NOARG("update", umdns_update
),
229 UBUS_METHOD_NOARG("browse", umdns_browse
),
230 UBUS_METHOD_NOARG("hosts", umdns_hosts
),
231 UBUS_METHOD_NOARG("reload", umdns_reload
),
234 static struct ubus_object_type umdns_object_type
=
235 UBUS_OBJECT_TYPE("umdns", umdns_methods
);
237 static struct ubus_object umdns_object
= {
239 .type
= &umdns_object_type
,
240 .methods
= umdns_methods
,
241 .n_methods
= ARRAY_SIZE(umdns_methods
),
245 ubus_connect_handler(struct ubus_context
*ctx
)
249 ret
= ubus_add_object(ctx
, &umdns_object
);
251 fprintf(stderr
, "Failed to add object: %s\n", ubus_strerror(ret
));
257 conn
.cb
= ubus_connect_handler
;
258 ubus_auto_connect(&conn
);
261 int ubus_service_list(ubus_data_handler_t cb
)
266 blob_buf_init(&b
, 0);
267 ret
= ubus_lookup_id(&conn
.ctx
, "service", &id
);
271 return ubus_invoke(&conn
.ctx
, id
, "list", b
.head
, cb
, NULL
, 5 * 1000);