6e275ef50955cdfb470130c465c3621b167471d0
2 * firewall3 - 3rd OpenWrt UCI firewall implementation
4 * Copyright (C) 2013-2014 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.
26 #include "redirects.h"
35 static enum fw3_family print_family
= FW3_FAMILY_ANY
;
37 static struct fw3_state
*run_state
= NULL
;
38 static struct fw3_state
*cfg_state
= NULL
;
42 build_state(bool runtime
)
44 struct fw3_state
*state
= NULL
;
45 struct uci_package
*p
= NULL
;
48 state
= calloc(1, sizeof(*state
));
50 error("Out of memory");
52 state
->uci
= uci_alloc_context();
55 error("Out of memory");
59 sf
= fopen(FW3_STATEFILE
, "r");
63 uci_import(state
->uci
, sf
, "fw3_state", &p
, true);
69 uci_free_context(state
->uci
);
75 state
->statefile
= true;
81 if (!fw3_ubus_connect())
82 warn("Failed to connect to ubus");
84 if (uci_load(state
->uci
, "firewall", &p
))
86 uci_perror(state
->uci
, NULL
);
87 error("Failed to load /etc/config/firewall");
90 if (!fw3_find_command("ipset"))
92 warn("Unable to locate ipset utility, disabling ipset support");
93 state
->disable_ipsets
= true;
100 struct blob_buf b
= {NULL
, NULL
, 0, NULL
};
103 fw3_load_defaults(state
, p
);
104 fw3_load_ipsets(state
, p
, b
.head
);
105 fw3_load_zones(state
, p
);
106 fw3_load_rules(state
, p
, b
.head
);
107 fw3_load_redirects(state
, p
, b
.head
);
108 fw3_load_snats(state
, p
, b
.head
);
109 fw3_load_forwards(state
, p
, b
.head
);
110 fw3_load_includes(state
, p
);
116 free_state(struct fw3_state
*state
)
118 struct list_head
*cur
, *tmp
;
120 list_for_each_safe(cur
, tmp
, &state
->zones
)
121 fw3_free_zone((struct fw3_zone
*)cur
);
123 list_for_each_safe(cur
, tmp
, &state
->rules
)
124 fw3_free_rule((struct fw3_rule
*)cur
);
126 list_for_each_safe(cur
, tmp
, &state
->redirects
)
127 fw3_free_redirect((struct fw3_redirect
*)cur
);
129 list_for_each_safe(cur
, tmp
, &state
->snats
)
130 fw3_free_snat((struct fw3_snat
*)cur
);
132 list_for_each_safe(cur
, tmp
, &state
->forwards
)
133 fw3_free_forward((struct fw3_forward
*)cur
);
135 list_for_each_safe(cur
, tmp
, &state
->ipsets
)
136 fw3_free_ipset((struct fw3_ipset
*)cur
);
138 list_for_each_safe(cur
, tmp
, &state
->includes
)
139 fw3_free_include((struct fw3_include
*)cur
);
141 uci_free_context(state
->uci
);
145 fw3_ubus_disconnect();
150 family_running(enum fw3_family family
)
152 return (run_state
&& has(run_state
->defaults
.flags
, family
, family
));
156 family_set(struct fw3_state
*state
, enum fw3_family family
, bool set
)
162 set(state
->defaults
.flags
, family
, family
);
164 del(state
->defaults
.flags
, family
, family
);
171 enum fw3_family family
;
172 enum fw3_table table
;
173 struct fw3_ipt_handle
*handle
;
175 if (!complete
&& !run_state
)
177 warn("The firewall appears to be stopped. "
178 "Use the 'flush' command to forcefully purge all rules.");
183 if (!print_family
&& run_state
)
184 fw3_hotplug_zones(run_state
, false);
186 for (family
= FW3_FAMILY_V4
; family
<= FW3_FAMILY_V6
; family
++)
188 if (!complete
&& !family_running(family
))
191 for (table
= FW3_TABLE_FILTER
; table
<= FW3_TABLE_RAW
; table
++)
193 if (!fw3_has_table(family
== FW3_FAMILY_V6
, fw3_flag_names
[table
]))
196 if (!(handle
= fw3_ipt_open(family
, table
)))
199 info(" * %sing %s %s table", complete
? "Flush" : "Clear",
200 fw3_flag_names
[family
], fw3_flag_names
[table
]);
204 fw3_flush_all(handle
);
208 fw3_flush_rules(handle
, run_state
, false);
209 fw3_flush_zones(handle
, run_state
, false);
212 fw3_ipt_commit(handle
);
213 fw3_ipt_close(handle
);
216 family_set(run_state
, family
, false);
217 family_set(cfg_state
, family
, false);
223 fw3_destroy_ipsets(run_state
);
226 fw3_flush_conntrack(NULL
);
228 if (!rv
&& run_state
)
229 fw3_write_statefile(run_state
);
238 enum fw3_family family
;
239 enum fw3_table table
;
240 struct fw3_ipt_handle
*handle
;
243 fw3_create_ipsets(cfg_state
);
245 for (family
= FW3_FAMILY_V4
; family
<= FW3_FAMILY_V6
; family
++)
247 if (family
== FW3_FAMILY_V6
&& cfg_state
->defaults
.disable_ipv6
)
250 if (print_family
&& family
!= print_family
)
253 if (!print_family
&& family_running(family
))
255 warn("The %s firewall appears to be started already. "
256 "If it is indeed empty, remove the %s file and retry.",
257 fw3_flag_names
[family
], FW3_STATEFILE
);
262 for (table
= FW3_TABLE_FILTER
; table
<= FW3_TABLE_RAW
; table
++)
264 if (!fw3_has_table(family
== FW3_FAMILY_V6
, fw3_flag_names
[table
]))
267 if (!(handle
= fw3_ipt_open(family
, table
)))
270 info(" * Populating %s %s table",
271 fw3_flag_names
[family
], fw3_flag_names
[table
]);
273 fw3_print_default_chains(handle
, cfg_state
, false);
274 fw3_print_zone_chains(handle
, cfg_state
, false);
275 fw3_print_default_head_rules(handle
, cfg_state
, false);
276 fw3_print_rules(handle
, cfg_state
);
277 fw3_print_redirects(handle
, cfg_state
);
278 fw3_print_snats(handle
, cfg_state
);
279 fw3_print_forwards(handle
, cfg_state
);
280 fw3_print_zone_rules(handle
, cfg_state
, false);
281 fw3_print_default_tail_rules(handle
, cfg_state
, false);
284 fw3_ipt_commit(handle
);
286 fw3_ipt_close(handle
);
290 fw3_print_includes(cfg_state
, family
, false);
292 family_set(run_state
, family
, true);
293 family_set(cfg_state
, family
, true);
300 fw3_flush_conntrack(run_state
);
301 fw3_set_defaults(cfg_state
);
305 fw3_run_includes(cfg_state
, false);
306 fw3_hotplug_zones(cfg_state
, true);
307 fw3_write_statefile(cfg_state
);
319 enum fw3_family family
;
320 enum fw3_table table
;
321 struct fw3_ipt_handle
*handle
;
326 fw3_hotplug_zones(run_state
, false);
328 for (family
= FW3_FAMILY_V4
; family
<= FW3_FAMILY_V6
; family
++)
330 if (!family_running(family
))
333 for (table
= FW3_TABLE_FILTER
; table
<= FW3_TABLE_RAW
; table
++)
335 if (!fw3_has_table(family
== FW3_FAMILY_V6
, fw3_flag_names
[table
]))
338 if (!(handle
= fw3_ipt_open(family
, table
)))
341 info(" * Clearing %s %s table",
342 fw3_flag_names
[family
], fw3_flag_names
[table
]);
344 fw3_flush_rules(handle
, run_state
, true);
345 fw3_flush_zones(handle
, run_state
, true);
346 fw3_ipt_commit(handle
);
347 fw3_ipt_close(handle
);
350 family_set(run_state
, family
, false);
351 family_set(cfg_state
, family
, false);
354 if (family
== FW3_FAMILY_V6
&& cfg_state
->defaults
.disable_ipv6
)
357 for (table
= FW3_TABLE_FILTER
; table
<= FW3_TABLE_RAW
; table
++)
359 if (!fw3_has_table(family
== FW3_FAMILY_V6
, fw3_flag_names
[table
]))
362 if (!(handle
= fw3_ipt_open(family
, table
)))
365 info(" * Populating %s %s table",
366 fw3_flag_names
[family
], fw3_flag_names
[table
]);
368 fw3_print_default_chains(handle
, cfg_state
, true);
369 fw3_print_zone_chains(handle
, cfg_state
, true);
370 fw3_print_default_head_rules(handle
, cfg_state
, true);
371 fw3_print_rules(handle
, cfg_state
);
372 fw3_print_redirects(handle
, cfg_state
);
373 fw3_print_snats(handle
, cfg_state
);
374 fw3_print_forwards(handle
, cfg_state
);
375 fw3_print_zone_rules(handle
, cfg_state
, true);
376 fw3_print_default_tail_rules(handle
, cfg_state
, true);
378 fw3_ipt_commit(handle
);
379 fw3_ipt_close(handle
);
382 fw3_print_includes(cfg_state
, family
, true);
384 family_set(run_state
, family
, true);
385 family_set(cfg_state
, family
, true);
392 fw3_flush_conntrack(run_state
);
394 fw3_set_defaults(cfg_state
);
395 fw3_run_includes(cfg_state
, true);
396 fw3_hotplug_zones(cfg_state
, true);
397 fw3_write_statefile(cfg_state
);
406 enum fw3_family family
;
407 enum fw3_table table
;
408 struct fw3_ipt_handle
*handle
;
410 for (family
= FW3_FAMILY_V4
; family
<= FW3_FAMILY_V6
; family
++)
412 if (family
== FW3_FAMILY_V6
&& cfg_state
->defaults
.disable_ipv6
)
415 for (table
= FW3_TABLE_FILTER
; table
<= FW3_TABLE_RAW
; table
++)
417 if (!fw3_has_table(family
== FW3_FAMILY_V6
, fw3_flag_names
[table
]))
420 if (!(handle
= fw3_ipt_open(family
, table
)))
424 fw3_ipt_commit(handle
);
425 fw3_ipt_close(handle
);
433 lookup_network(const char *net
)
436 struct fw3_device
*d
;
438 list_for_each_entry(z
, &cfg_state
->zones
, list
)
440 list_for_each_entry(d
, &z
->networks
, list
)
442 if (!strcmp(d
->name
, net
))
444 printf("%s\n", z
->name
);
454 lookup_device(const char *dev
)
457 struct fw3_device
*d
;
459 list_for_each_entry(z
, &cfg_state
->zones
, list
)
461 list_for_each_entry(d
, &z
->devices
, list
)
463 if (!strcmp(d
->name
, dev
))
465 printf("%s\n", z
->name
);
475 lookup_zone(const char *zone
, const char *device
)
478 struct fw3_device
*d
;
480 list_for_each_entry(z
, &cfg_state
->zones
, list
)
482 if (strcmp(z
->name
, zone
))
485 list_for_each_entry(d
, &z
->devices
, list
)
487 if (device
&& strcmp(device
, d
->name
))
490 printf("%s\n", d
->name
);
506 fprintf(stderr
, "fw3 [-4] [-6] [-q] print\n");
507 fprintf(stderr
, "fw3 [-q] {start|stop|flush|reload|restart}\n");
508 fprintf(stderr
, "fw3 [-q] network {net}\n");
509 fprintf(stderr
, "fw3 [-q] device {dev}\n");
510 fprintf(stderr
, "fw3 [-q] zone {zone} [dev]\n");
516 int main(int argc
, char **argv
)
519 enum fw3_family family
= FW3_FAMILY_ANY
;
520 struct fw3_defaults
*defs
= NULL
;
522 while ((ch
= getopt(argc
, argv
, "46dqh")) != -1)
527 family
= FW3_FAMILY_V4
;
531 family
= FW3_FAMILY_V6
;
539 if (freopen("/dev/null", "w", stderr
)) {}
549 defs
= &cfg_state
->defaults
;
557 if (!strcmp(argv
[optind
], "print"))
559 if (family
== FW3_FAMILY_ANY
)
561 family
= FW3_FAMILY_V4
;
563 else if (family
== FW3_FAMILY_V6
)
565 if (defs
->disable_ipv6
)
566 warn("IPv6 rules globally disabled in configuration");
569 warn("IPv6 support is not compiled in");
573 if (freopen("/dev/null", "w", stderr
)) {};
575 cfg_state
->disable_ipsets
= true;
576 print_family
= family
;
586 else if (!strcmp(argv
[optind
], "start"))
595 else if (!strcmp(argv
[optind
], "stop"))
604 else if (!strcmp(argv
[optind
], "flush"))
613 else if (!strcmp(argv
[optind
], "restart"))
623 else if (!strcmp(argv
[optind
], "reload"))
632 else if (!strcmp(argv
[optind
], "gc"))
640 else if (!strcmp(argv
[optind
], "network") && (optind
+ 1) < argc
)
642 rv
= lookup_network(argv
[optind
+ 1]);
644 else if (!strcmp(argv
[optind
], "device") && (optind
+ 1) < argc
)
646 rv
= lookup_device(argv
[optind
+ 1]);
648 else if (!strcmp(argv
[optind
], "zone") && (optind
+ 1) < argc
)
650 rv
= lookup_zone(argv
[optind
+ 1], argv
[optind
+ 2]);
659 free_state(cfg_state
);
662 free_state(run_state
);