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;
146 if (!net || !interfaces)
149 blobmsg_for_each_attr(cur, interfaces, rem) {
150 blobmsg_parse(policy, __DEV_MAX, tb, blobmsg_data(cur), blobmsg_len(cur));
151 if (!tb[DEV_INTERFACE] ||
152 strcmp(blobmsg_data(tb[DEV_INTERFACE]), net) != 0)
155 if (tb[DEV_L3_DEVICE])
156 name = blobmsg_data(tb[DEV_L3_DEVICE]);
157 else if (tb[DEV_DEVICE])
158 name = blobmsg_data(tb[DEV_DEVICE]);
168 dev = calloc(1, sizeof(*dev));
173 snprintf(dev->name, sizeof(dev->name), "%s", name);
180 fw3_ubus_address(struct list_head *list, const char *net)
189 static const struct blobmsg_policy policy[__ADDR_MAX] = {
190 [ADDR_INTERFACE] = { "interface", BLOBMSG_TYPE_STRING },
191 [ADDR_IPV4] = { "ipv4-address", BLOBMSG_TYPE_ARRAY },
192 [ADDR_IPV6] = { "ipv6-address", BLOBMSG_TYPE_ARRAY },
193 [ADDR_IPV6_PREFIX] = { "ipv6-prefix-assignment", BLOBMSG_TYPE_ARRAY },
195 struct blob_attr *tb[__ADDR_MAX];
196 struct blob_attr *cur;
199 if (!net || !interfaces)
202 blobmsg_for_each_attr(cur, interfaces, rem) {
203 blobmsg_parse(policy, __ADDR_MAX, tb, blobmsg_data(cur), blobmsg_len(cur));
205 if (!tb[ADDR_INTERFACE] ||
206 strcmp(blobmsg_data(tb[ADDR_INTERFACE]), net) != 0)
209 parse_subnets(list, FW3_FAMILY_V4, tb[ADDR_IPV4]);
210 parse_subnets(list, FW3_FAMILY_V6, tb[ADDR_IPV6]);
211 parse_subnets(list, FW3_FAMILY_V6, tb[ADDR_IPV6_PREFIX]);
216 fw3_ubus_zone_devices(struct fw3_zone *zone)
218 struct blob_attr *c, *cur, *dcur;
219 unsigned r, rem, drem;
223 blobmsg_for_each_attr(c, interfaces, r) {
227 blobmsg_for_each_attr(cur, c, rem) {
228 if (!strcmp(blobmsg_name(cur), "interface"))
229 name = blobmsg_get_string(cur);
230 else if (!strcmp(blobmsg_name(cur), "data"))
231 blobmsg_for_each_attr(dcur, cur, drem)
232 if (!strcmp(blobmsg_name(dcur), "zone"))
233 matches = !strcmp(blobmsg_get_string(dcur), zone->name);
237 fw3_parse_device(&zone->networks, name, true);
242 fw3_ubus_rules(struct blob_buf *b)
246 struct blob_attr *c, *cur, *dcur, *rule, *ropt;
247 unsigned r, rem, drem, rrem, orem;
249 blobmsg_for_each_attr(c, interfaces, r) {
250 const char *l3_device = NULL;
251 struct blob_attr *data = NULL;
253 blobmsg_for_each_attr(cur, c, rem) {
254 if (!strcmp(blobmsg_name(cur), "l3_device"))
255 l3_device = blobmsg_get_string(cur);
256 else if (!strcmp(blobmsg_name(cur), "data"))
260 if (!data || !l3_device)
263 blobmsg_for_each_attr(dcur, data, drem) {
264 if (strcmp(blobmsg_name(dcur), "firewall"))
267 blobmsg_for_each_attr(rule, dcur, rrem) {
268 void *k = blobmsg_open_table(b, "");
270 blobmsg_for_each_attr(ropt, rule, orem)
271 if (strcmp(blobmsg_name(ropt), "device"))
272 blobmsg_add_blob(b, ropt);
274 blobmsg_add_string(b, "device", l3_device);
275 blobmsg_close_table(b, k);
284 blobmsg_for_each_attr(c, procd_data, r) {
285 if (!blobmsg_check_attr(c, true))
289 blobmsg_for_each_attr(cur, c, rem) {
290 if (!blobmsg_check_attr(cur, true))
294 blobmsg_for_each_attr(dcur, cur, drem) {
295 if (!blobmsg_check_attr(dcur, true))
298 blobmsg_for_each_attr(rule, dcur, rrem)
299 blobmsg_add_blob(b, rule);