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.
22 const struct fw3_option fw3_ipset_opts
[] = {
23 FW3_OPT("enabled", bool, ipset
, enabled
),
25 FW3_OPT("name", string
, ipset
, name
),
26 FW3_OPT("family", family
, ipset
, family
),
28 FW3_OPT("storage", ipset_method
, ipset
, method
),
29 FW3_LIST("match", ipset_datatype
, ipset
, datatypes
),
31 FW3_OPT("iprange", address
, ipset
, iprange
),
32 FW3_OPT("portrange", port
, ipset
, portrange
),
34 FW3_OPT("netmask", int, ipset
, netmask
),
35 FW3_OPT("maxelem", int, ipset
, maxelem
),
36 FW3_OPT("hashsize", int, ipset
, hashsize
),
37 FW3_OPT("timeout", int, ipset
, timeout
),
39 FW3_OPT("external", string
, ipset
, external
),
44 #define T(m, t1, t2, t3, r, o) \
45 { FW3_IPSET_METHOD_##m, \
46 FW3_IPSET_TYPE_##t1 | (FW3_IPSET_TYPE_##t2 << 8) | (FW3_IPSET_TYPE_##t3 << 16), \
50 OPT_IPRANGE
= (1 << 0),
51 OPT_PORTRANGE
= (1 << 1),
52 OPT_NETMASK
= (1 << 2),
53 OPT_HASHSIZE
= (1 << 3),
54 OPT_MAXELEM
= (1 << 4),
55 OPT_FAMILY
= (1 << 5),
59 enum fw3_ipset_method method
;
65 static struct ipset_type ipset_types
[] = {
66 T(BITMAP
, IP
, UNSPEC
, UNSPEC
, OPT_IPRANGE
, OPT_NETMASK
),
67 T(BITMAP
, IP
, MAC
, UNSPEC
, OPT_IPRANGE
, 0),
68 T(BITMAP
, PORT
, UNSPEC
, UNSPEC
, OPT_PORTRANGE
, 0),
70 T(HASH
, IP
, UNSPEC
, UNSPEC
, 0,
71 OPT_FAMILY
| OPT_HASHSIZE
| OPT_MAXELEM
| OPT_NETMASK
),
72 T(HASH
, NET
, UNSPEC
, UNSPEC
, 0,
73 OPT_FAMILY
| OPT_HASHSIZE
| OPT_MAXELEM
),
74 T(HASH
, IP
, PORT
, UNSPEC
, 0,
75 OPT_FAMILY
| OPT_HASHSIZE
| OPT_MAXELEM
),
76 T(HASH
, NET
, PORT
, UNSPEC
, 0,
77 OPT_FAMILY
| OPT_HASHSIZE
| OPT_MAXELEM
),
78 T(HASH
, IP
, PORT
, IP
, 0,
79 OPT_FAMILY
| OPT_HASHSIZE
| OPT_MAXELEM
),
80 T(HASH
, IP
, PORT
, NET
, 0,
81 OPT_FAMILY
| OPT_HASHSIZE
| OPT_MAXELEM
),
83 T(LIST
, SET
, UNSPEC
, UNSPEC
, 0, OPT_MAXELEM
),
88 check_types(struct uci_element
*e
, struct fw3_ipset
*ipset
)
91 uint32_t typelist
= 0;
92 struct fw3_ipset_datatype
*type
;
94 const char *methods
[] = {
103 list_for_each_entry(type
, &ipset
->datatypes
, list
)
107 warn_elem(e
, "must not have more than 3 datatypes assigned");
111 typelist
|= (type
->type
<< (i
++ * 8));
114 /* find a suitable storage method if none specified */
115 if (ipset
->method
== FW3_IPSET_METHOD_UNSPEC
)
117 for (i
= 0; i
< ARRAY_SIZE(ipset_types
); i
++)
119 if (ipset_types
[i
].types
== typelist
)
121 ipset
->method
= ipset_types
[i
].method
;
123 warn_elem(e
, "defines no storage method, assuming '%s'",
124 methods
[ipset
->method
]);
131 //typelist |= ipset->method;
133 for (i
= 0; i
< ARRAY_SIZE(ipset_types
); i
++)
135 if (ipset_types
[i
].method
== ipset
->method
&&
136 ipset_types
[i
].types
== typelist
)
138 if (!ipset
->external
|| !*ipset
->external
)
140 if ((ipset_types
[i
].required
& OPT_IPRANGE
) &&
143 warn_elem(e
, "requires an ip range");
147 if ((ipset_types
[i
].required
& OPT_PORTRANGE
) &&
148 !ipset
->portrange
.set
)
150 warn_elem(e
, "requires a port range");
154 if (!(ipset_types
[i
].required
& OPT_IPRANGE
) &&
157 warn_elem(e
, "iprange ignored");
158 ipset
->iprange
.set
= false;
161 if (!(ipset_types
[i
].required
& OPT_PORTRANGE
) &&
162 ipset
->portrange
.set
)
164 warn_elem(e
, "portrange ignored");
165 ipset
->portrange
.set
= false;
168 if (!(ipset_types
[i
].optional
& OPT_NETMASK
) &&
171 warn_elem(e
, "netmask ignored");
175 if (!(ipset_types
[i
].optional
& OPT_HASHSIZE
) &&
178 warn_elem(e
, "hashsize ignored");
182 if (!(ipset_types
[i
].optional
& OPT_MAXELEM
) &&
185 warn_elem(e
, "maxelem ignored");
189 if (!(ipset_types
[i
].optional
& OPT_FAMILY
) &&
190 ipset
->family
!= FW3_FAMILY_ANY
)
192 warn_elem(e
, "family ignored");
193 ipset
->family
= FW3_FAMILY_ANY
;
201 warn_elem(e
, "has an invalid combination of storage method and matches");
206 fw3_alloc_ipset(void)
208 struct fw3_ipset
*ipset
;
210 ipset
= malloc(sizeof(*ipset
));
215 memset(ipset
, 0, sizeof(*ipset
));
217 INIT_LIST_HEAD(&ipset
->datatypes
);
223 fw3_load_ipsets(struct fw3_state
*state
, struct uci_package
*p
)
225 struct uci_section
*s
;
226 struct uci_element
*e
;
227 struct fw3_ipset
*ipset
;
229 INIT_LIST_HEAD(&state
->ipsets
);
231 if (state
->disable_ipsets
)
234 uci_foreach_element(&p
->sections
, e
)
236 s
= uci_to_section(e
);
238 if (strcmp(s
->type
, "ipset"))
241 ipset
= fw3_alloc_ipset();
246 fw3_parse_options(ipset
, fw3_ipset_opts
, s
);
248 if (!ipset
->name
|| !*ipset
->name
)
250 warn_elem(e
, "must have a name assigned");
252 //else if (fw3_lookup_ipset(state, ipset->name) != NULL)
254 // warn_elem(e, "has duplicated set name '%s'", ipset->name);
256 else if (list_empty(&ipset
->datatypes
))
258 warn_elem(e
, "has no datatypes assigned");
260 else if (check_types(e
, ipset
))
262 list_add_tail(&ipset
->list
, &state
->ipsets
);
266 fw3_free_ipset(ipset
);
272 create_ipset(struct fw3_ipset
*ipset
, struct fw3_state
*state
)
275 char s
[INET6_ADDRSTRLEN
];
277 struct fw3_ipset_datatype
*type
;
278 struct fw3_address
*a
;
280 const char *methods
[] = {
287 const char *types
[] = {
296 if (ipset
->external
&& *ipset
->external
)
299 info(" * Creating ipset %s", ipset
->name
);
302 fw3_pr("create %s %s", ipset
->name
, methods
[ipset
->method
]);
304 list_for_each_entry(type
, &ipset
->datatypes
, list
)
306 fw3_pr("%c%s", first
? ':' : ',', types
[type
->type
]);
310 if (ipset
->iprange
.set
)
316 inet_ntop(a
->family
== FW3_FAMILY_V4
? AF_INET
: AF_INET6
,
317 &a
->address
.v6
, s
, sizeof(s
));
319 fw3_pr(" range %s/%u", s
, a
->mask
);
323 inet_ntop(a
->family
== FW3_FAMILY_V4
? AF_INET
: AF_INET6
,
324 &a
->address
.v6
, s
, sizeof(s
));
326 fw3_pr(" range %s", s
);
328 inet_ntop(a
->family
== FW3_FAMILY_V4
? AF_INET
: AF_INET6
,
329 &a
->address2
.v6
, s
, sizeof(s
));
334 else if (ipset
->portrange
.set
)
336 fw3_pr(" range %u-%u",
337 ipset
->portrange
.port_min
, ipset
->portrange
.port_max
);
340 if (ipset
->family
!= FW3_FAMILY_ANY
)
341 fw3_pr(" family inet%s", (ipset
->family
== FW3_FAMILY_V4
) ? "" : "6");
343 if (ipset
->timeout
> 0)
344 fw3_pr(" timeout %u", ipset
->timeout
);
346 if (ipset
->maxelem
> 0)
347 fw3_pr(" maxelem %u", ipset
->maxelem
);
349 if (ipset
->netmask
> 0)
350 fw3_pr(" netmask %u", ipset
->netmask
);
352 if (ipset
->hashsize
> 0)
353 fw3_pr(" hashsize %u", ipset
->hashsize
);
359 fw3_create_ipsets(struct fw3_state
*state
)
361 struct fw3_ipset
*ipset
;
363 if (state
->disable_ipsets
)
366 list_for_each_entry(ipset
, &state
->ipsets
, list
)
367 create_ipset(ipset
, state
);
373 fw3_destroy_ipsets(struct fw3_state
*state
, enum fw3_family family
)
375 struct fw3_ipset
*s
, *tmp
;
377 list_for_each_entry_safe(s
, tmp
, &state
->ipsets
, list
)
379 del(s
->flags
, family
, family
);
381 if (fw3_no_family(s
->flags
[family
== FW3_FAMILY_V6
]))
383 info(" * Deleting ipset %s", s
->name
);
385 fw3_pr("flush %s\n", s
->name
);
386 fw3_pr("destroy %s\n", s
->name
);
392 fw3_lookup_ipset(struct fw3_state
*state
, const char *name
)
396 if (list_empty(&state
->ipsets
))
399 list_for_each_entry(s
, &state
->ipsets
, list
)
401 if (strcmp(s
->name
, name
))