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_rule_opts
[] = {
23 FW3_OPT("enabled", bool, rule
, enabled
),
25 FW3_OPT("name", string
, rule
, name
),
26 FW3_OPT("family", family
, rule
, family
),
28 FW3_OPT("src", device
, rule
, src
),
29 FW3_OPT("dest", device
, rule
, dest
),
31 FW3_OPT("ipset", device
, rule
, ipset
),
33 FW3_LIST("proto", protocol
, rule
, proto
),
35 FW3_LIST("src_ip", address
, rule
, ip_src
),
36 FW3_LIST("src_mac", mac
, rule
, mac_src
),
37 FW3_LIST("src_port", port
, rule
, port_src
),
39 FW3_LIST("dest_ip", address
, rule
, ip_dest
),
40 FW3_LIST("dest_port", port
, rule
, port_dest
),
42 FW3_LIST("icmp_type", icmptype
, rule
, icmp_type
),
43 FW3_OPT("extra", string
, rule
, extra
),
45 FW3_OPT("limit", limit
, rule
, limit
),
46 FW3_OPT("limit_burst", int, rule
, limit
.burst
),
48 FW3_OPT("utc_time", bool, rule
, time
.utc
),
49 FW3_OPT("start_date", date
, rule
, time
.datestart
),
50 FW3_OPT("stop_date", date
, rule
, time
.datestop
),
51 FW3_OPT("start_time", time
, rule
, time
.timestart
),
52 FW3_OPT("stop_time", time
, rule
, time
.timestop
),
53 FW3_OPT("weekdays", weekdays
, rule
, time
.weekdays
),
54 FW3_OPT("monthdays", monthdays
, rule
, time
.monthdays
),
56 FW3_OPT("target", target
, rule
, target
),
63 fw3_load_rules(struct fw3_state
*state
, struct uci_package
*p
)
65 struct uci_section
*s
;
66 struct uci_element
*e
;
67 struct fw3_rule
*rule
;
69 INIT_LIST_HEAD(&state
->rules
);
71 uci_foreach_element(&p
->sections
, e
)
73 s
= uci_to_section(e
);
75 if (strcmp(s
->type
, "rule"))
78 rule
= malloc(sizeof(*rule
));
83 memset(rule
, 0, sizeof(*rule
));
85 INIT_LIST_HEAD(&rule
->proto
);
87 INIT_LIST_HEAD(&rule
->ip_src
);
88 INIT_LIST_HEAD(&rule
->mac_src
);
89 INIT_LIST_HEAD(&rule
->port_src
);
91 INIT_LIST_HEAD(&rule
->ip_dest
);
92 INIT_LIST_HEAD(&rule
->port_dest
);
94 INIT_LIST_HEAD(&rule
->icmp_type
);
98 fw3_parse_options(rule
, fw3_rule_opts
, s
);
106 if (rule
->src
.invert
|| rule
->dest
.invert
)
108 warn_elem(e
, "must not have inverted 'src' or 'dest' options");
112 else if (rule
->src
.set
&& !rule
->src
.any
&&
113 !(rule
->_src
= fw3_lookup_zone(state
, rule
->src
.name
, false)))
115 warn_elem(e
, "refers to not existing zone '%s'", rule
->src
.name
);
119 else if (rule
->dest
.set
&& !rule
->dest
.any
&&
120 !(rule
->_dest
= fw3_lookup_zone(state
, rule
->dest
.name
, false)))
122 warn_elem(e
, "refers to not existing zone '%s'", rule
->dest
.name
);
126 else if (rule
->ipset
.set
&& state
->disable_ipsets
)
128 warn_elem(e
, "skipped due to disabled ipset support");
132 else if (rule
->ipset
.set
&& !rule
->ipset
.any
&&
133 !(rule
->_ipset
= fw3_lookup_ipset(state
, rule
->ipset
.name
, false)))
135 warn_elem(e
, "refers to unknown ipset '%s'", rule
->ipset
.name
);
140 if (!rule
->_src
&& rule
->target
== FW3_TARGET_NOTRACK
)
142 warn_elem(e
, "is set to target NOTRACK but has no source assigned");
147 if (!rule
->_src
&& !rule
->_dest
&& !rule
->src
.any
&& !rule
->dest
.any
)
149 warn_elem(e
, "has neither a source nor a destination zone assigned "
150 "- assuming an output rule");
153 if (rule
->target
== FW3_TARGET_UNSPEC
)
155 warn_elem(e
, "has no target specified, defaulting to REJECT");
156 rule
->target
= FW3_TARGET_REJECT
;
158 else if (rule
->target
> FW3_TARGET_NOTRACK
)
160 warn_elem(e
, "has invalid target specified, defaulting to REJECT");
161 rule
->target
= FW3_TARGET_REJECT
;
165 setbit(rule
->_dest
->dst_flags
, rule
->target
);
167 list_add_tail(&rule
->list
, &state
->rules
);
174 print_chain(struct fw3_rule
*rule
)
178 sprintf(chain
, "delegate_output");
180 if (rule
->target
== FW3_TARGET_NOTRACK
)
182 sprintf(chain
, "zone_%s_notrack", rule
->src
.name
);
191 sprintf(chain
, "zone_%s_forward", rule
->src
.name
);
193 sprintf(chain
, "zone_%s_input", rule
->src
.name
);
198 sprintf(chain
, "delegate_forward");
200 sprintf(chain
, "delegate_input");
204 if (rule
->dest
.set
&& !rule
->src
.set
)
205 sprintf(chain
, "zone_%s_output", rule
->dest
.name
);
208 fw3_pr("-A %s", chain
);
211 static void print_target(struct fw3_rule
*rule
)
217 case FW3_TARGET_ACCEPT
:
218 case FW3_TARGET_DROP
:
219 case FW3_TARGET_NOTRACK
:
220 target
= fw3_flag_names
[rule
->target
];
224 target
= fw3_flag_names
[FW3_TARGET_REJECT
];
228 if (rule
->dest
.set
&& !rule
->dest
.any
)
229 fw3_pr(" -j zone_%s_dest_%s\n", rule
->dest
.name
, target
);
230 else if (rule
->target
== FW3_TARGET_REJECT
)
231 fw3_pr(" -j reject\n");
233 fw3_pr(" -j %s\n", target
);
237 print_rule(enum fw3_table table
, enum fw3_family family
,
238 struct fw3_rule
*rule
, struct fw3_protocol
*proto
,
239 struct fw3_address
*sip
, struct fw3_address
*dip
,
240 struct fw3_port
*sport
, struct fw3_port
*dport
,
241 struct fw3_mac
*mac
, struct fw3_icmptype
*icmptype
)
243 if (!fw3_is_family(sip
, family
) || !fw3_is_family(dip
, family
))
245 info(" ! Skipping due to different family of ip address");
249 if (proto
->protocol
== 58 && family
== FW3_FAMILY_V4
)
251 info(" ! Skipping due to different family of protocol");
256 fw3_format_ipset(rule
->_ipset
, rule
->ipset
.invert
);
257 fw3_format_protocol(proto
, family
);
258 fw3_format_src_dest(sip
, dip
);
259 fw3_format_sport_dport(sport
, dport
);
260 fw3_format_icmptype(icmptype
, family
);
262 fw3_format_limit(&rule
->limit
);
263 fw3_format_time(&rule
->time
);
264 fw3_format_extra(rule
->extra
);
265 fw3_format_comment(rule
->name
);
270 expand_rule(enum fw3_table table
, enum fw3_family family
,
271 struct fw3_rule
*rule
, int num
)
273 struct fw3_protocol
*proto
;
274 struct fw3_address
*sip
;
275 struct fw3_address
*dip
;
276 struct fw3_port
*sport
;
277 struct fw3_port
*dport
;
279 struct fw3_icmptype
*icmptype
;
281 struct list_head
*sports
= NULL
;
282 struct list_head
*dports
= NULL
;
283 struct list_head
*icmptypes
= NULL
;
285 struct list_head empty
;
286 INIT_LIST_HEAD(&empty
);
288 if (!fw3_is_family(rule
, family
))
291 if ((table
== FW3_TABLE_RAW
&& rule
->target
!= FW3_TARGET_NOTRACK
) ||
292 (table
!= FW3_TABLE_FILTER
))
296 info(" * Rule '%s'", rule
->name
);
298 info(" * Rule #%u", num
);
300 if (!fw3_is_family(rule
->_src
, family
) ||
301 !fw3_is_family(rule
->_dest
, family
))
303 info(" ! Skipping due to different family of zone");
309 if (!fw3_is_family(rule
->_ipset
, family
))
311 info(" ! Skipping due to different family in ipset");
315 setbit(rule
->_ipset
->flags
, family
);
318 list_for_each_entry(proto
, &rule
->proto
, list
)
320 /* icmp / ipv6-icmp */
321 if (proto
->protocol
== 1 || proto
->protocol
== 58)
325 icmptypes
= &rule
->icmp_type
;
329 sports
= &rule
->port_src
;
330 dports
= &rule
->port_dest
;
334 fw3_foreach(sip
, &rule
->ip_src
)
335 fw3_foreach(dip
, &rule
->ip_dest
)
336 fw3_foreach(sport
, sports
)
337 fw3_foreach(dport
, dports
)
338 fw3_foreach(mac
, &rule
->mac_src
)
339 fw3_foreach(icmptype
, icmptypes
)
340 print_rule(table
, family
, rule
, proto
, sip
, dip
, sport
, dport
,
346 fw3_print_rules(enum fw3_table table
, enum fw3_family family
,
347 struct fw3_state
*state
)
350 struct fw3_rule
*rule
;
352 list_for_each_entry(rule
, &state
->rules
, list
)
353 expand_rule(table
, family
, rule
, num
++);