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
;
24 static void dump_cb(struct ubus_request
*req
, int type
, struct blob_attr
*msg
)
26 static const struct blobmsg_policy policy
= { "interface", BLOBMSG_TYPE_ARRAY
};
27 struct blob_attr
*cur
;
29 blobmsg_parse(&policy
, 1, &cur
, blob_data(msg
), blob_len(msg
));
31 interfaces
= blob_memdup(cur
);
35 fw3_ubus_connect(void)
39 struct ubus_context
*ctx
= ubus_connect(NULL
);
44 if (ubus_lookup_id(ctx
, "network.interface", &id
))
47 if (ubus_invoke(ctx
, id
, "dump", NULL
, dump_cb
, NULL
, 500))
59 fw3_ubus_disconnect(void)
65 static struct fw3_address
*
66 parse_subnet(enum fw3_family family
, struct blob_attr
*dict
, int rem
)
68 struct blob_attr
*cur
;
69 struct fw3_address
*addr
;
71 addr
= calloc(1, sizeof(*addr
));
76 addr
->family
= family
;
78 __blob_for_each_attr(cur
, dict
, rem
)
80 if (!strcmp(blobmsg_name(cur
), "address"))
81 inet_pton(family
== FW3_FAMILY_V4
? AF_INET
: AF_INET6
,
82 blobmsg_data(cur
), &addr
->address
.v6
);
84 else if (!strcmp(blobmsg_name(cur
), "mask"))
85 addr
->mask
= be32_to_cpu(*(uint32_t *)blobmsg_data(cur
));
92 parse_subnets(struct list_head
*head
, enum fw3_family family
,
93 struct blob_attr
*list
)
95 struct blob_attr
*cur
;
96 struct fw3_address
*addr
;
102 blob_for_each_attr(cur
, list
, rem
)
104 addr
= parse_subnet(family
, blobmsg_data(cur
), blobmsg_data_len(cur
));
107 list_add_tail(&addr
->list
, head
);
112 fw3_ubus_device(const char *net
)
114 struct fw3_device
*dev
= NULL
;
115 struct blob_attr
*c
, *cur
;
120 if (!net
|| !interfaces
)
123 dev
= calloc(1, sizeof(*dev
));
127 blobmsg_for_each_attr(c
, interfaces
, r
) {
129 blobmsg_for_each_attr(cur
, c
, rem
)
130 if (!strcmp(blobmsg_name(cur
), "interface"))
131 matched
= !strcmp(blobmsg_get_string(cur
), net
);
136 blobmsg_for_each_attr(cur
, c
, rem
) {
137 data
= blobmsg_data(cur
);
139 if (!strcmp(blobmsg_name(cur
), "device") && !dev
->name
[0])
140 snprintf(dev
->name
, sizeof(dev
->name
), "%s", data
);
141 else if (!strcmp(blobmsg_name(cur
), "l3_device"))
142 snprintf(dev
->name
, sizeof(dev
->name
), "%s", data
);
145 dev
->set
= !!dev
->name
[0];
153 fw3_ubus_address(struct list_head
*list
, const char *net
)
162 static const struct blobmsg_policy policy
[__ADDR_MAX
] = {
163 [ADDR_INTERFACE
] = { "interface", BLOBMSG_TYPE_STRING
},
164 [ADDR_IPV4
] = { "ipv4-address", BLOBMSG_TYPE_ARRAY
},
165 [ADDR_IPV6
] = { "ipv6-address", BLOBMSG_TYPE_ARRAY
},
166 [ADDR_IPV6_PREFIX
] = { "ipv6-prefix-assignment", BLOBMSG_TYPE_ARRAY
},
168 struct blob_attr
*tb
[__ADDR_MAX
];
169 struct blob_attr
*cur
;
172 if (!net
|| !interfaces
)
175 blobmsg_for_each_attr(cur
, interfaces
, rem
) {
176 blobmsg_parse(policy
, __ADDR_MAX
, tb
, blobmsg_data(cur
), blobmsg_len(cur
));
178 if (!tb
[ADDR_INTERFACE
] ||
179 strcmp(blobmsg_data(tb
[ADDR_INTERFACE
]), net
) != 0)
182 parse_subnets(list
, FW3_FAMILY_V4
, tb
[ADDR_IPV4
]);
183 parse_subnets(list
, FW3_FAMILY_V6
, tb
[ADDR_IPV6
]);
184 parse_subnets(list
, FW3_FAMILY_V6
, tb
[ADDR_IPV6_PREFIX
]);
189 fw3_ubus_zone_devices(struct fw3_zone
*zone
)
191 struct blob_attr
*c
, *cur
, *dcur
;
192 unsigned r
, rem
, drem
;
196 blobmsg_for_each_attr(c
, interfaces
, r
) {
200 blobmsg_for_each_attr(cur
, c
, rem
) {
201 if (!strcmp(blobmsg_name(cur
), "interface"))
202 name
= blobmsg_get_string(cur
);
203 else if (!strcmp(blobmsg_name(cur
), "data"))
204 blobmsg_for_each_attr(dcur
, cur
, drem
)
205 if (!strcmp(blobmsg_name(dcur
), "zone"))
206 matches
= !strcmp(blobmsg_get_string(dcur
), zone
->name
);
210 fw3_parse_device(&zone
->networks
, name
, true);
215 fw3_ubus_rules(struct blob_buf
*b
)
219 struct blob_attr
*c
, *cur
, *dcur
, *rule
, *ropt
;
220 unsigned r
, rem
, drem
, rrem
, orem
;
222 blobmsg_for_each_attr(c
, interfaces
, r
) {
223 const char *l3_device
= NULL
;
224 struct blob_attr
*data
= NULL
;
226 blobmsg_for_each_attr(cur
, c
, rem
) {
227 if (!strcmp(blobmsg_name(cur
), "l3_device"))
228 l3_device
= blobmsg_get_string(cur
);
229 else if (!strcmp(blobmsg_name(cur
), "data"))
233 if (!data
|| !l3_device
)
236 blobmsg_for_each_attr(dcur
, data
, drem
) {
237 if (strcmp(blobmsg_name(dcur
), "firewall"))
240 blobmsg_for_each_attr(rule
, dcur
, rrem
) {
241 void *k
= blobmsg_open_table(b
, "");
243 blobmsg_for_each_attr(ropt
, rule
, orem
)
244 if (strcmp(blobmsg_name(ropt
), "device"))
245 blobmsg_add_blob(b
, ropt
);
247 blobmsg_add_string(b
, "device", l3_device
);
248 blobmsg_close_table(b
, k
);