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", (const char *) 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_service *s;
100 char *buffer = (char *) mdns_buf;
103 blob_buf_init(&b, 0);
104 avl_for_each_element(&services, s, avl) {
106 if (!cache_service_is_host(s))
108 snprintf(buffer, MAX_NAME_LEN, "%s", (const char *) s->entry);
109 local = strstr(buffer, "._");
112 c = blobmsg_open_table(&b, buffer);
113 strncat(buffer, ".local", MAX_NAME_LEN);
114 cache_dump_records(&b, buffer);
115 cache_dump_records(&b, s->entry);
116 blobmsg_close_table(&b, c);
118 ubus_send_reply(ctx, req, b.head);
120 return UBUS_STATUS_OK;
129 static const struct blobmsg_policy config_policy[] = {
130 [CFG_INTERFACES] = { "interfaces", BLOBMSG_TYPE_ARRAY },
131 [CFG_KEEP] = { "keep", BLOBMSG_TYPE_BOOL },
135 umdns_set_config(struct ubus_context *ctx, struct ubus_object *obj,
136 struct ubus_request_data *req, const char *method,
137 struct blob_attr *msg)
139 struct blob_attr *data[CFG_MAX], *cur;
140 int rem, keep = false;
142 blobmsg_parse(config_policy, CFG_MAX, data, blob_data(msg), blob_len(msg));
143 if (!data[CFG_INTERFACES])
144 return UBUS_STATUS_INVALID_ARGUMENT;
146 if (!blobmsg_check_attr_list(data[CFG_INTERFACES], BLOBMSG_TYPE_STRING))
147 return UBUS_STATUS_INVALID_ARGUMENT;
149 keep = data[CFG_KEEP] && blobmsg_get_bool(data[CFG_KEEP]);
151 vlist_update(&interfaces);
152 ubus_notify(ctx, obj, "set_config", NULL, 1000);
155 blobmsg_for_each_attr(cur, data[CFG_INTERFACES], rem)
156 interface_add(blobmsg_data(cur));
159 vlist_flush(&interfaces);
171 static const struct blobmsg_policy query_policy[QUERY_MAX] = {
172 [QUERY_QUESTION]= { "question", BLOBMSG_TYPE_STRING },
173 [QUERY_IFACE] = { "interface", BLOBMSG_TYPE_STRING },
174 [QUERY_TYPE] = { "type", BLOBMSG_TYPE_INT32 },
178 umdns_query(struct ubus_context *ctx, struct ubus_object *obj,
179 struct ubus_request_data *req, const char *method,
180 struct blob_attr *msg)
182 struct blob_attr *tb[QUERY_MAX], *c;
183 const char *question = "_services._dns-sd._udp.local";
187 blobmsg_parse(query_policy, QUERY_MAX, tb, blob_data(msg), blob_len(msg));
189 if (!(c = tb[QUERY_IFACE]))
190 return UBUS_STATUS_INVALID_ARGUMENT;
192 ifname = blobmsg_get_string(c);
194 if ((c = tb[QUERY_QUESTION]))
195 question = blobmsg_get_string(c);
197 if ((c = tb[QUERY_TYPE]))
198 type = blobmsg_get_u32(c);
200 struct interface *iface_v4 = interface_get(ifname, 0, 1);
201 struct interface *iface_v6 = interface_get(ifname, 1, 1);
203 if (!iface_v4 && !iface_v6)
204 return UBUS_STATUS_NOT_FOUND;
206 if (!strcmp(method, "query")) {
208 dns_send_question(iface_v4, question, type, 1);
211 dns_send_question(iface_v6, question, type, 1);
213 return UBUS_STATUS_OK;
214 } else if (!strcmp(method, "fetch")) {
215 blob_buf_init(&b, 0);
216 void *k = blobmsg_open_array(&b, "records");
217 cache_dump_recursive(&b, question, type, iface_v4 ? iface_v4 : iface_v6);
218 blobmsg_close_array(&b, k);
219 ubus_send_reply(ctx, req, b.head);
220 return UBUS_STATUS_OK;
222 return UBUS_STATUS_INVALID_ARGUMENT;
227 static const struct ubus_method umdns_methods[] = {
228 UBUS_METHOD("set_config", umdns_set_config, config_policy),
229 UBUS_METHOD("query", umdns_query, query_policy),
230 UBUS_METHOD("fetch", umdns_query, query_policy),
231 UBUS_METHOD_NOARG("update", umdns_update),
232 UBUS_METHOD_NOARG("browse", umdns_browse),
233 UBUS_METHOD_NOARG("hosts", umdns_hosts),
234 UBUS_METHOD_NOARG("reload", umdns_reload),
237 static struct ubus_object_type umdns_object_type =
238 UBUS_OBJECT_TYPE("umdns", umdns_methods);
240 static struct ubus_object umdns_object = {
242 .type = &umdns_object_type,
243 .methods = umdns_methods,
244 .n_methods = ARRAY_SIZE(umdns_methods),
248 ubus_connect_handler(struct ubus_context *ctx)
252 ret = ubus_add_object(ctx, &umdns_object);
254 fprintf(stderr, "Failed to add object: %s\n", ubus_strerror(ret));
260 conn.cb = ubus_connect_handler;
261 ubus_auto_connect(&conn);
264 int ubus_service_list(ubus_data_handler_t cb)
269 blob_buf_init(&b, 0);
270 ret = ubus_lookup_id(&conn.ctx, "service", &id);
274 return ubus_invoke(&conn.ctx, id, "list", b.head, cb, NULL, 5 * 1000);