2 * firewall3 - 3rd OpenWrt UCI firewall implementation
4 * Copyright (C) 2013 Jo-Philipp Wich <jow@openwrt.org>
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 static struct blob_attr *interfaces = NULL;
22 static struct blob_attr *procd_data;
25 static void dump_cb(struct ubus_request *req, int type, struct blob_attr *msg)
27 static const struct blobmsg_policy policy = { "interface", BLOBMSG_TYPE_ARRAY };
28 struct blob_attr *cur;
30 blobmsg_parse(&policy, 1, &cur, blob_data(msg), blob_len(msg));
32 interfaces = blob_memdup(cur);
35 static void procd_data_cb(struct ubus_request *req, int type, struct blob_attr *msg)
37 procd_data = blob_memdup(msg);
41 fw3_ubus_connect(void)
45 struct ubus_context *ctx = ubus_connect(NULL);
46 struct blob_buf b = { };
51 if (ubus_lookup_id(ctx, "network.interface", &id))
54 if (ubus_invoke(ctx, id, "dump", NULL, dump_cb, NULL, 500))
59 if (ubus_lookup_id(ctx, "service", &id))
63 blobmsg_add_string(&b, "type", "firewall");
64 ubus_invoke(ctx, id, "get_data", b.head, procd_data_cb, NULL, 2000);
74 fw3_ubus_disconnect(void)
80 static struct fw3_address *
81 parse_subnet(enum fw3_family family, struct blob_attr *dict, int rem)
83 struct blob_attr *cur;
84 struct fw3_address *addr;
86 addr = calloc(1, sizeof(*addr));
91 addr->family = family;
93 __blob_for_each_attr(cur, dict, rem)
95 if (!strcmp(blobmsg_name(cur), "address"))
96 inet_pton(family == FW3_FAMILY_V4 ? AF_INET : AF_INET6,
97 blobmsg_data(cur), &addr->address.v6);
99 else if (!strcmp(blobmsg_name(cur), "mask"))
100 addr->mask = be32_to_cpu(*(uint32_t *)blobmsg_data(cur));
107 parse_subnets(struct list_head *head, enum fw3_family family,
108 struct blob_attr *list)
110 struct blob_attr *cur;
111 struct fw3_address *addr;
117 blob_for_each_attr(cur, list, rem)
119 addr = parse_subnet(family, blobmsg_data(cur), blobmsg_data_len(cur));
122 list_add_tail(&addr->list, head);
127 fw3_ubus_device(const char *net)
135 static const struct blobmsg_policy policy[__DEV_MAX] = {
136 [DEV_INTERFACE] = { "interface", BLOBMSG_TYPE_STRING },
137 [DEV_DEVICE] = { "device", BLOBMSG_TYPE_STRING },
138 [DEV_L3_DEVICE] = { "l3_device", BLOBMSG_TYPE_STRING },
140 struct fw3_device *dev = NULL;
141 struct blob_attr *tb[__DEV_MAX];
142 struct blob_attr *cur;
145 if (!net || !interfaces)
148 dev = calloc(1, sizeof(*dev));
152 blobmsg_for_each_attr(cur, interfaces, rem) {
155 blobmsg_parse(policy, __DEV_MAX, tb, blobmsg_data(cur), blobmsg_len(cur));
156 if (!tb[DEV_INTERFACE] ||
157 strcmp(blobmsg_data(tb[DEV_INTERFACE]), net) != 0)
160 if (tb[DEV_L3_DEVICE])
161 name = blobmsg_data(tb[DEV_L3_DEVICE]);
162 else if (tb[DEV_DEVICE])
163 name = blobmsg_data(tb[DEV_DEVICE]);
167 snprintf(dev->name, sizeof(dev->name), "%s", name);
168 dev->set = !!dev->name[0];
176 fw3_ubus_address(struct list_head *list, const char *net)
185 static const struct blobmsg_policy policy[__ADDR_MAX] = {
186 [ADDR_INTERFACE] = { "interface", BLOBMSG_TYPE_STRING },
187 [ADDR_IPV4] = { "ipv4-address", BLOBMSG_TYPE_ARRAY },
188 [ADDR_IPV6] = { "ipv6-address", BLOBMSG_TYPE_ARRAY },
189 [ADDR_IPV6_PREFIX] = { "ipv6-prefix-assignment", BLOBMSG_TYPE_ARRAY },
191 struct blob_attr *tb[__ADDR_MAX];
192 struct blob_attr *cur;
195 if (!net || !interfaces)
198 blobmsg_for_each_attr(cur, interfaces, rem) {
199 blobmsg_parse(policy, __ADDR_MAX, tb, blobmsg_data(cur), blobmsg_len(cur));
201 if (!tb[ADDR_INTERFACE] ||
202 strcmp(blobmsg_data(tb[ADDR_INTERFACE]), net) != 0)
205 parse_subnets(list, FW3_FAMILY_V4, tb[ADDR_IPV4]);
206 parse_subnets(list, FW3_FAMILY_V6, tb[ADDR_IPV6]);
207 parse_subnets(list, FW3_FAMILY_V6, tb[ADDR_IPV6_PREFIX]);
212 fw3_ubus_zone_devices(struct fw3_zone *zone)
214 struct blob_attr *c, *cur, *dcur;
215 unsigned r, rem, drem;
219 blobmsg_for_each_attr(c, interfaces, r) {
223 blobmsg_for_each_attr(cur, c, rem) {
224 if (!strcmp(blobmsg_name(cur), "interface"))
225 name = blobmsg_get_string(cur);
226 else if (!strcmp(blobmsg_name(cur), "data"))
227 blobmsg_for_each_attr(dcur, cur, drem)
228 if (!strcmp(blobmsg_name(dcur), "zone"))
229 matches = !strcmp(blobmsg_get_string(dcur), zone->name);
233 fw3_parse_device(&zone->networks, name, true);
238 fw3_ubus_rules(struct blob_buf *b)
242 struct blob_attr *c, *cur, *dcur, *rule, *ropt;
243 unsigned r, rem, drem, rrem, orem;
245 blobmsg_for_each_attr(c, interfaces, r) {
246 const char *l3_device = NULL;
247 struct blob_attr *data = NULL;
249 blobmsg_for_each_attr(cur, c, rem) {
250 if (!strcmp(blobmsg_name(cur), "l3_device"))
251 l3_device = blobmsg_get_string(cur);
252 else if (!strcmp(blobmsg_name(cur), "data"))
256 if (!data || !l3_device)
259 blobmsg_for_each_attr(dcur, data, drem) {
260 if (strcmp(blobmsg_name(dcur), "firewall"))
263 blobmsg_for_each_attr(rule, dcur, rrem) {
264 void *k = blobmsg_open_table(b, "");
266 blobmsg_for_each_attr(ropt, rule, orem)
267 if (strcmp(blobmsg_name(ropt), "device"))
268 blobmsg_add_blob(b, ropt);
270 blobmsg_add_string(b, "device", l3_device);
271 blobmsg_close_table(b, k);
280 blobmsg_for_each_attr(c, procd_data, r) {
281 if (!blobmsg_check_attr(c, true))
285 blobmsg_for_each_attr(cur, c, rem) {
286 if (!blobmsg_check_attr(cur, true))
290 blobmsg_for_each_attr(dcur, cur, drem) {
291 if (!blobmsg_check_attr(dcur, true))
294 blobmsg_for_each_attr(rule, dcur, rrem)
295 blobmsg_add_blob(b, rule);