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("name", string
, ipset
, name
),
24 FW3_OPT("family", family
, ipset
, family
),
26 FW3_OPT("storage", ipset_method
, ipset
, method
),
27 FW3_LIST("match", ipset_datatype
, ipset
, datatypes
),
29 FW3_LIST("iprange", address
, ipset
, iprange
),
30 FW3_OPT("portrange", port
, ipset
, portrange
),
32 FW3_OPT("netmask", int, ipset
, netmask
),
33 FW3_OPT("maxelem", int, ipset
, maxelem
),
34 FW3_OPT("hashsize", int, ipset
, hashsize
),
35 FW3_OPT("timeout", int, ipset
, timeout
),
37 FW3_OPT("external", string
, ipset
, external
),
42 #define T(m, t1, t2, t3, r, o) \
43 { FW3_IPSET_METHOD_##m, \
44 FW3_IPSET_TYPE_##t1 | (FW3_IPSET_TYPE_##t2 << 8) | (FW3_IPSET_TYPE_##t3 << 16), \
48 OPT_IPRANGE
= (1 << 0),
49 OPT_PORTRANGE
= (1 << 1),
50 OPT_NETMASK
= (1 << 2),
51 OPT_HASHSIZE
= (1 << 3),
52 OPT_MAXELEM
= (1 << 4),
53 OPT_FAMILY
= (1 << 5),
57 enum fw3_ipset_method method
;
63 static struct ipset_type ipset_types
[] = {
64 T(BITMAP
, IP
, UNSPEC
, UNSPEC
, OPT_IPRANGE
, OPT_NETMASK
),
65 T(BITMAP
, IP
, MAC
, UNSPEC
, OPT_IPRANGE
, 0),
66 T(BITMAP
, PORT
, UNSPEC
, UNSPEC
, OPT_PORTRANGE
, 0),
68 T(HASH
, IP
, UNSPEC
, UNSPEC
, 0,
69 OPT_FAMILY
| OPT_HASHSIZE
| OPT_MAXELEM
| OPT_NETMASK
),
70 T(HASH
, NET
, UNSPEC
, UNSPEC
, 0,
71 OPT_FAMILY
| OPT_HASHSIZE
| OPT_MAXELEM
),
72 T(HASH
, IP
, PORT
, UNSPEC
, 0,
73 OPT_FAMILY
| OPT_HASHSIZE
| OPT_MAXELEM
),
74 T(HASH
, NET
, PORT
, UNSPEC
, 0,
75 OPT_FAMILY
| OPT_HASHSIZE
| OPT_MAXELEM
),
76 T(HASH
, IP
, PORT
, IP
, 0,
77 OPT_FAMILY
| OPT_HASHSIZE
| OPT_MAXELEM
),
78 T(HASH
, IP
, PORT
, NET
, 0,
79 OPT_FAMILY
| OPT_HASHSIZE
| OPT_MAXELEM
),
81 T(LIST
, SET
, UNSPEC
, UNSPEC
, 0, OPT_MAXELEM
),
86 check_types(struct uci_element
*e
, struct fw3_ipset
*ipset
)
89 uint32_t typelist
= 0;
90 struct fw3_ipset_datatype
*type
;
92 const char *methods
[] = {
101 list_for_each_entry(type
, &ipset
->datatypes
, list
)
105 warn_elem(e
, "must not have more than 3 datatypes assigned");
109 typelist
|= (type
->type
<< (i
++ * 8));
112 /* find a suitable storage method if none specified */
113 if (ipset
->method
== FW3_IPSET_METHOD_UNSPEC
)
115 for (i
= 0; i
< ARRAY_SIZE(ipset_types
); i
++)
117 if (ipset_types
[i
].types
== typelist
)
119 ipset
->method
= ipset_types
[i
].method
;
121 warn_elem(e
, "defines no storage method, assuming '%s'",
122 methods
[ipset
->method
]);
129 //typelist |= ipset->method;
131 for (i
= 0; i
< ARRAY_SIZE(ipset_types
); i
++)
133 if (ipset_types
[i
].method
== ipset
->method
&&
134 ipset_types
[i
].types
== typelist
)
136 if (!ipset
->external
|| !*ipset
->external
)
138 if ((ipset_types
[i
].required
& OPT_IPRANGE
) &&
139 list_empty(&ipset
->iprange
))
141 warn_elem(e
, "requires an ip range");
145 if ((ipset_types
[i
].required
& OPT_PORTRANGE
) &&
146 !ipset
->portrange
.set
)
148 warn_elem(e
, "requires a port range");
152 if (!(ipset_types
[i
].required
& OPT_IPRANGE
) &&
153 !list_empty(&ipset
->iprange
))
155 warn_elem(e
, "iprange ignored");
156 fw3_free_list(&ipset
->iprange
);
159 if (!(ipset_types
[i
].required
& OPT_PORTRANGE
) &&
160 ipset
->portrange
.set
)
162 warn_elem(e
, "portrange ignored");
163 memset(&ipset
->portrange
, 0, sizeof(ipset
->portrange
));
166 if (!(ipset_types
[i
].optional
& OPT_NETMASK
) &&
169 warn_elem(e
, "netmask ignored");
173 if (!(ipset_types
[i
].optional
& OPT_HASHSIZE
) &&
176 warn_elem(e
, "hashsize ignored");
180 if (!(ipset_types
[i
].optional
& OPT_MAXELEM
) &&
183 warn_elem(e
, "maxelem ignored");
187 if (!(ipset_types
[i
].optional
& OPT_FAMILY
) &&
188 ipset
->family
!= FW3_FAMILY_ANY
)
190 warn_elem(e
, "family ignored");
191 ipset
->family
= FW3_FAMILY_ANY
;
199 warn_elem(e
, "has an invalid combination of storage method and matches");
204 fw3_alloc_ipset(void)
206 struct fw3_ipset
*ipset
;
208 ipset
= malloc(sizeof(*ipset
));
213 memset(ipset
, 0, sizeof(*ipset
));
215 INIT_LIST_HEAD(&ipset
->datatypes
);
216 INIT_LIST_HEAD(&ipset
->iprange
);
222 fw3_load_ipsets(struct fw3_state
*state
, struct uci_package
*p
)
224 struct uci_section
*s
;
225 struct uci_element
*e
;
226 struct fw3_ipset
*ipset
;
228 INIT_LIST_HEAD(&state
->ipsets
);
230 if (state
->disable_ipsets
)
233 uci_foreach_element(&p
->sections
, e
)
235 s
= uci_to_section(e
);
237 if (strcmp(s
->type
, "ipset"))
240 ipset
= fw3_alloc_ipset();
245 fw3_parse_options(ipset
, fw3_ipset_opts
, s
);
247 if (!ipset
->name
|| !*ipset
->name
)
249 warn_elem(e
, "must have a name assigned");
251 //else if (fw3_lookup_ipset(state, ipset->name) != NULL)
253 // warn_elem(e, "has duplicated set name '%s'", ipset->name);
255 else if (list_empty(&ipset
->datatypes
))
257 warn_elem(e
, "has no datatypes assigned");
259 else if (check_types(e
, ipset
))
261 list_add_tail(&ipset
->list
, &state
->ipsets
);
265 fw3_free_ipset(ipset
);
271 create_ipset(struct fw3_ipset
*ipset
, struct fw3_state
*state
)
274 char s
[INET6_ADDRSTRLEN
];
276 struct fw3_ipset_datatype
*type
;
277 struct fw3_address
*a1
, *a2
;
279 const char *methods
[] = {
286 const char *types
[] = {
295 if (ipset
->external
&& *ipset
->external
)
298 info("Creating ipset %s", ipset
->name
);
301 fw3_pr("create %s %s", ipset
->name
, methods
[ipset
->method
]);
303 list_for_each_entry(type
, &ipset
->datatypes
, list
)
305 fw3_pr("%c%s", first
? ':' : ',', types
[type
->type
]);
309 if (!list_empty(&ipset
->iprange
))
311 a1
= list_first_entry(&ipset
->iprange
, struct fw3_address
, list
);
312 a2
= list_last_entry(&ipset
->iprange
, struct fw3_address
, list
);
316 inet_ntop(a1
->family
== FW3_FAMILY_V4
? AF_INET
: AF_INET6
,
317 &a1
->address
.v6
, s
, sizeof(s
));
319 fw3_pr(" range %s/%u", s
, a1
->mask
);
321 else if (a1
->family
== a2
->family
&&
322 fw3_is_family(ipset
, a1
->family
) &&
323 fw3_is_family(ipset
, a2
->family
))
325 inet_ntop(a1
->family
== FW3_FAMILY_V4
? AF_INET
: AF_INET6
,
326 &a1
->address
.v6
, s
, sizeof(s
));
328 fw3_pr(" range %s", s
);
330 inet_ntop(a2
->family
== FW3_FAMILY_V4
? AF_INET
: AF_INET6
,
331 &a2
->address
.v6
, s
, sizeof(s
));
336 else if (ipset
->portrange
.set
)
338 fw3_pr(" range %u-%u",
339 ipset
->portrange
.port_min
, ipset
->portrange
.port_max
);
342 if (ipset
->family
!= FW3_FAMILY_ANY
)
343 fw3_pr(" family inet%s", (ipset
->family
== FW3_FAMILY_V4
) ? "" : "6");
345 if (ipset
->timeout
> 0)
346 fw3_pr(" timeout %u", ipset
->timeout
);
348 if (ipset
->maxelem
> 0)
349 fw3_pr(" maxelem %u", ipset
->maxelem
);
351 if (ipset
->netmask
> 0)
352 fw3_pr(" netmask %u", ipset
->netmask
);
354 if (ipset
->hashsize
> 0)
355 fw3_pr(" hashsize %u", ipset
->hashsize
);
359 fw3_set_running(ipset
, &state
->running_ipsets
);
363 fw3_create_ipsets(struct fw3_state
*state
)
365 struct fw3_ipset
*ipset
;
367 if (state
->disable_ipsets
)
370 list_for_each_entry(ipset
, &state
->ipsets
, list
)
371 if (!fw3_lookup_ipset(state
, ipset
->name
, true))
372 create_ipset(ipset
, state
);
378 fw3_destroy_ipsets(struct fw3_state
*state
)
380 struct fw3_ipset
*s
, *tmp
;
381 int mask
= (1 << FW3_FAMILY_V4
) | (1 << FW3_FAMILY_V6
);
383 list_for_each_entry_safe(s
, tmp
, &state
->running_ipsets
, running_list
)
385 if (!hasbit(state
->defaults
.flags
, FW3_FAMILY_V4
))
386 delbit(s
->flags
, FW3_FAMILY_V4
);
388 if (!hasbit(state
->defaults
.flags
, FW3_FAMILY_V6
))
389 delbit(s
->flags
, FW3_FAMILY_V6
);
391 if (!(s
->flags
& mask
))
393 info("Deleting ipset %s", s
->name
);
395 fw3_pr("flush %s\n", s
->name
);
396 fw3_pr("destroy %s\n", s
->name
);
398 fw3_set_running(s
, NULL
);
404 fw3_lookup_ipset(struct fw3_state
*state
, const char *name
, bool running
)
408 if (list_empty(&state
->ipsets
))
411 list_for_each_entry(s
, &state
->ipsets
, list
)
413 if (strcmp(s
->name
, name
))
416 if (!running
|| s
->running_list
.next
)