2 * firewall3 - 3rd OpenWrt UCI firewall implementation
4 * Copyright (C) 2013 Jo-Philipp Wich <jo@mein.io>
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
, 2000))
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_get_string(cur
), &addr
->address
.v6
);
99 else if (!strcmp(blobmsg_name(cur
), "mask"))
100 fw3_bitlen2netmask(family
, blobmsg_get_u32(cur
), &addr
->mask
.v6
);
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 rem
= blobmsg_data_len(list
);
119 __blob_for_each_attr(cur
, blobmsg_data(list
), rem
)
121 addr
= parse_subnet(family
, blobmsg_data(cur
), blobmsg_data_len(cur
));
125 list_add_tail(&addr
->list
, head
);
134 fw3_ubus_device(const char *net
)
142 static const struct blobmsg_policy policy
[__DEV_MAX
] = {
143 [DEV_INTERFACE
] = { "interface", BLOBMSG_TYPE_STRING
},
144 [DEV_DEVICE
] = { "device", BLOBMSG_TYPE_STRING
},
145 [DEV_L3_DEVICE
] = { "l3_device", BLOBMSG_TYPE_STRING
},
147 struct fw3_device
*dev
= NULL
;
148 struct blob_attr
*tb
[__DEV_MAX
];
149 struct blob_attr
*cur
;
153 if (!net
|| !interfaces
)
156 blobmsg_for_each_attr(cur
, interfaces
, rem
) {
157 blobmsg_parse(policy
, __DEV_MAX
, tb
, blobmsg_data(cur
), blobmsg_len(cur
));
158 if (!tb
[DEV_INTERFACE
] ||
159 strcmp(blobmsg_data(tb
[DEV_INTERFACE
]), net
) != 0)
162 if (tb
[DEV_L3_DEVICE
])
163 name
= blobmsg_data(tb
[DEV_L3_DEVICE
]);
164 else if (tb
[DEV_DEVICE
])
165 name
= blobmsg_data(tb
[DEV_DEVICE
]);
175 dev
= calloc(1, sizeof(*dev
));
180 snprintf(dev
->name
, sizeof(dev
->name
), "%s", name
);
187 fw3_ubus_address(struct list_head
*list
, const char *net
)
196 static const struct blobmsg_policy policy
[__ADDR_MAX
] = {
197 [ADDR_INTERFACE
] = { "interface", BLOBMSG_TYPE_STRING
},
198 [ADDR_IPV4
] = { "ipv4-address", BLOBMSG_TYPE_ARRAY
},
199 [ADDR_IPV6
] = { "ipv6-address", BLOBMSG_TYPE_ARRAY
},
200 [ADDR_IPV6_PREFIX
] = { "ipv6-prefix-assignment", BLOBMSG_TYPE_ARRAY
},
202 struct blob_attr
*tb
[__ADDR_MAX
];
203 struct blob_attr
*cur
;
206 if (!net
|| !interfaces
)
209 blobmsg_for_each_attr(cur
, interfaces
, rem
) {
210 blobmsg_parse(policy
, __ADDR_MAX
, tb
, blobmsg_data(cur
), blobmsg_len(cur
));
212 if (!tb
[ADDR_INTERFACE
] ||
213 strcmp(blobmsg_data(tb
[ADDR_INTERFACE
]), net
) != 0)
216 n
+= parse_subnets(list
, FW3_FAMILY_V4
, tb
[ADDR_IPV4
]);
217 n
+= parse_subnets(list
, FW3_FAMILY_V6
, tb
[ADDR_IPV6
]);
218 n
+= parse_subnets(list
, FW3_FAMILY_V6
, tb
[ADDR_IPV6_PREFIX
]);
225 fw3_ubus_zone_devices(struct fw3_zone
*zone
)
227 struct blob_attr
*c
, *cur
, *dcur
;
228 unsigned r
, rem
, drem
;
232 blobmsg_for_each_attr(c
, interfaces
, r
) {
236 blobmsg_for_each_attr(cur
, c
, rem
) {
237 if (!strcmp(blobmsg_name(cur
), "interface"))
238 name
= blobmsg_get_string(cur
);
239 else if (!strcmp(blobmsg_name(cur
), "data"))
240 blobmsg_for_each_attr(dcur
, cur
, drem
)
241 if (!strcmp(blobmsg_name(dcur
), "zone"))
242 matches
= !strcmp(blobmsg_get_string(dcur
), zone
->name
);
246 fw3_parse_device(&zone
->networks
, name
, true);
250 static void fw3_ubus_rules_add(struct blob_buf
*b
, const char *service
,
251 const char *instance
, const char *device
,
252 const struct blob_attr
*rule
, unsigned n
)
254 void *k
= blobmsg_open_table(b
, "");
255 struct blob_attr
*ropt
;
260 blobmsg_for_each_attr(ropt
, rule
, orem
) {
261 if (!strcmp(blobmsg_name(ropt
), "type"))
262 type
= blobmsg_data(ropt
);
263 if (device
&& !strcmp(blobmsg_name(ropt
), "device"))
264 device
= blobmsg_get_string(ropt
);
265 else if (strcmp(blobmsg_name(ropt
), "name"))
266 blobmsg_add_blob(b
, ropt
);
270 snprintf(comment
, sizeof(comment
), "ubus:%s[%s] %s %d",
271 service
, instance
, type
? type
: "rule", n
);
273 snprintf(comment
, sizeof(comment
), "ubus:%s %s %d",
274 service
, type
? type
: "rule", n
);
276 blobmsg_add_string(b
, "name", comment
);
279 blobmsg_add_string(b
, "device", device
);
281 blobmsg_close_table(b
, k
);
285 fw3_ubus_rules(struct blob_buf
*b
)
289 struct blob_attr
*c
, *cur
, *dcur
, *rule
;
290 unsigned n
, r
, rem
, drem
, rrem
;
292 blobmsg_for_each_attr(c
, interfaces
, r
) {
293 const char *l3_device
= NULL
;
294 const char *iface_proto
= "unknown";
295 const char *iface_name
= "unknown";
296 struct blob_attr
*data
= NULL
;
298 blobmsg_for_each_attr(cur
, c
, rem
) {
299 if (!strcmp(blobmsg_name(cur
), "l3_device"))
300 l3_device
= blobmsg_get_string(cur
);
301 else if (!strcmp(blobmsg_name(cur
), "interface"))
302 iface_name
= blobmsg_get_string(cur
);
303 else if (!strcmp(blobmsg_name(cur
), "proto"))
304 iface_proto
= blobmsg_get_string(cur
);
305 else if (!strcmp(blobmsg_name(cur
), "data"))
309 if (!data
|| !l3_device
)
312 blobmsg_for_each_attr(dcur
, data
, drem
) {
313 if (strcmp(blobmsg_name(dcur
), "firewall"))
318 blobmsg_for_each_attr(rule
, dcur
, rrem
)
319 fw3_ubus_rules_add(b
, iface_name
, iface_proto
,
320 l3_device
, rule
, n
++);
328 blobmsg_for_each_attr(c
, procd_data
, r
) {
329 if (!blobmsg_check_attr(c
, true))
333 blobmsg_for_each_attr(cur
, c
, rem
) {
334 if (!blobmsg_check_attr(cur
, true))
337 /* fw rules within the service itself */
338 if (!strcmp(blobmsg_name(cur
), "firewall")) {
341 blobmsg_for_each_attr(rule
, cur
, rrem
)
342 fw3_ubus_rules_add(b
, blobmsg_name(c
),
343 NULL
, NULL
, rule
, n
++);
349 blobmsg_for_each_attr(dcur
, cur
, drem
) {
350 if (!blobmsg_check_attr(dcur
, true))
353 if (strcmp(blobmsg_name(dcur
), "firewall"))
358 blobmsg_for_each_attr(rule
, dcur
, rrem
)
359 fw3_ubus_rules_add(b
, blobmsg_name(c
),
360 blobmsg_name(cur
), NULL
, rule
, n
++);