25668fcec9ef4addd3f5012b4d894b00211a6d91
2 * firewall3 - 3rd OpenWrt UCI firewall implementation
4 * Copyright (C) 2013-2014 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.
24 put_value(void *ptr
, void *val
, int elem_size
, bool is_list
)
30 copy
= malloc(elem_size
);
35 memcpy(copy
, val
, elem_size
);
36 list_add_tail((struct list_head
*)copy
, (struct list_head
*)ptr
);
40 memcpy(ptr
, val
, elem_size
);
45 parse_enum(void *ptr
, const char *val
, const char **values
, int min
, int max
)
47 int i
, l
= strlen(val
);
51 for (i
= 0; i
<= (max
- min
); i
++)
53 if (!strncasecmp(val
, values
[i
], l
))
55 *((int *)ptr
) = min
+ i
;
65 const char *fw3_flag_names
[__FW3_FLAG_MAX
] = {
88 const char *fw3_limit_units
[__FW3_LIMIT_UNIT_MAX
] = {
95 const char *fw3_ipset_method_names
[__FW3_IPSET_METHOD_MAX
] = {
102 const char *fw3_ipset_type_names
[__FW3_IPSET_TYPE_MAX
] = {
111 static const char *weekdays
[] = {
121 static const char *include_types
[] = {
126 static const char *reflection_sources
[] = {
133 fw3_parse_bool(void *ptr
, const char *val
, bool is_list
)
135 if (!strcmp(val
, "true") || !strcmp(val
, "yes") || !strcmp(val
, "1"))
136 *((bool *)ptr
) = true;
138 *((bool *)ptr
) = false;
144 fw3_parse_int(void *ptr
, const char *val
, bool is_list
)
147 int n
= strtol(val
, &e
, 0);
158 fw3_parse_string(void *ptr
, const char *val
, bool is_list
)
160 *((char **)ptr
) = (char *)val
;
165 fw3_parse_target(void *ptr
, const char *val
, bool is_list
)
167 return parse_enum(ptr
, val
, &fw3_flag_names
[FW3_FLAG_ACCEPT
],
168 FW3_FLAG_ACCEPT
, FW3_FLAG_MASQUERADE
);
172 fw3_parse_limit(void *ptr
, const char *val
, bool is_list
)
174 struct fw3_limit
*limit
= ptr
;
175 enum fw3_limit_unit u
= FW3_LIMIT_UNIT_SECOND
;
181 limit
->invert
= true;
182 while (isspace(*++val
));
185 n
= strtol(val
, &e
, 10);
187 if (errno
== ERANGE
|| errno
== EINVAL
)
190 if (*e
&& *e
++ != '/')
196 if (!parse_enum(&u
, e
, fw3_limit_units
, 0, FW3_LIMIT_UNIT_DAY
))
206 fw3_parse_device(void *ptr
, const char *val
, bool is_list
)
209 struct fw3_device dev
= { };
215 put_value(ptr
, &dev
, sizeof(dev
), is_list
);
222 while (isspace(*++val
));
225 if ((p
= strchr(val
, '@')) != NULL
)
228 snprintf(dev
.network
, sizeof(dev
.network
), "%s", p
);
232 snprintf(dev
.name
, sizeof(dev
.name
), "%s", val
);
237 put_value(ptr
, &dev
, sizeof(dev
), is_list
);
242 fw3_parse_address(void *ptr
, const char *val
, bool is_list
)
244 struct fw3_address addr
= { };
253 while (isspace(*++val
));
261 if ((p
= strchr(s
, '/')) != NULL
)
264 m
= strtoul(p
, &e
, 10);
266 if ((e
== p
) || (*e
!= 0))
268 if (strchr(s
, ':') || !inet_pton(AF_INET
, p
, &v4
))
274 for (i
= 0, m
= 32; !(v4
.s_addr
& 1) && (i
< 32); i
++)
281 else if ((p
= strchr(s
, '-')) != NULL
)
285 if (inet_pton(AF_INET6
, p
, &v6
))
287 addr
.family
= FW3_FAMILY_V6
;
288 addr
.address2
.v6
= v6
;
291 else if (inet_pton(AF_INET
, p
, &v4
))
293 addr
.family
= FW3_FAMILY_V4
;
294 addr
.address2
.v4
= v4
;
304 if (inet_pton(AF_INET6
, s
, &v6
))
306 addr
.family
= FW3_FAMILY_V6
;
307 addr
.address
.v6
= v6
;
308 addr
.mask
= (m
>= 0) ? m
: 128;
310 else if (inet_pton(AF_INET
, s
, &v4
))
312 addr
.family
= FW3_FAMILY_V4
;
313 addr
.address
.v4
= v4
;
314 addr
.mask
= (m
>= 0) ? m
: 32;
324 put_value(ptr
, &addr
, sizeof(addr
), is_list
);
329 fw3_parse_network(void *ptr
, const char *val
, bool is_list
)
331 struct fw3_device dev
= { };
332 struct fw3_address
*addr
, *tmp
;
333 LIST_HEAD(addr_list
);
335 if (!fw3_parse_address(ptr
, val
, is_list
))
337 if (!fw3_parse_device(&dev
, val
, false))
340 fw3_ubus_address(&addr_list
, dev
.name
);
341 list_for_each_entry(addr
, &addr_list
, list
)
343 addr
->invert
= dev
.invert
;
344 addr
->resolved
= true;
349 list_splice_tail(&addr_list
, ptr
);
351 else if (!list_empty(&addr_list
))
353 memcpy(ptr
, list_first_entry(&addr_list
, typeof(*addr
), list
),
356 list_for_each_entry_safe(addr
, tmp
, &addr_list
, list
)
365 fw3_parse_mac(void *ptr
, const char *val
, bool is_list
)
367 struct fw3_mac addr
= { };
368 struct ether_addr
*mac
;
373 while (isspace(*++val
));
376 if ((mac
= ether_aton(val
)) != NULL
)
381 put_value(ptr
, &addr
, sizeof(addr
), is_list
);
389 fw3_parse_port(void *ptr
, const char *val
, bool is_list
)
391 struct fw3_port range
= { };
399 while (isspace(*++val
));
402 n
= strtoul(val
, &p
, 10);
404 if (errno
== ERANGE
|| errno
== EINVAL
)
407 if (*p
&& *p
!= '-' && *p
!= ':')
412 m
= strtoul(++p
, NULL
, 10);
414 if (errno
== ERANGE
|| errno
== EINVAL
|| m
< n
)
427 put_value(ptr
, &range
, sizeof(range
), is_list
);
432 fw3_parse_family(void *ptr
, const char *val
, bool is_list
)
434 if (!strcmp(val
, "any"))
435 *((enum fw3_family
*)ptr
) = FW3_FAMILY_ANY
;
436 else if (!strcmp(val
, "inet") || strrchr(val
, '4'))
437 *((enum fw3_family
*)ptr
) = FW3_FAMILY_V4
;
438 else if (!strcmp(val
, "inet6") || strrchr(val
, '6'))
439 *((enum fw3_family
*)ptr
) = FW3_FAMILY_V6
;
447 fw3_parse_icmptype(void *ptr
, const char *val
, bool is_list
)
449 struct fw3_icmptype icmp
= { };
455 for (i
= 0; i
< ARRAY_SIZE(fw3_icmptype_list_v4
); i
++)
457 if (!strcmp(val
, fw3_icmptype_list_v4
[i
].name
))
459 icmp
.type
= fw3_icmptype_list_v4
[i
].type
;
460 icmp
.code_min
= fw3_icmptype_list_v4
[i
].code_min
;
461 icmp
.code_max
= fw3_icmptype_list_v4
[i
].code_max
;
468 for (i
= 0; i
< ARRAY_SIZE(fw3_icmptype_list_v6
); i
++)
470 if (!strcmp(val
, fw3_icmptype_list_v6
[i
].name
))
472 icmp
.type6
= fw3_icmptype_list_v6
[i
].type
;
473 icmp
.code6_min
= fw3_icmptype_list_v6
[i
].code_min
;
474 icmp
.code6_max
= fw3_icmptype_list_v6
[i
].code_max
;
483 i
= strtoul(val
, &p
, 10);
485 if ((p
== val
) || (*p
!= '/' && *p
!= 0) || (i
> 0xFF))
493 i
= strtoul(val
, &p
, 10);
495 if ((p
== val
) || (*p
!= 0) || (i
> 0xFF))
504 icmp
.code_max
= 0xFF;
507 icmp
.type6
= icmp
.type
;
508 icmp
.code6_min
= icmp
.code_max
;
509 icmp
.code6_max
= icmp
.code_max
;
515 icmp
.family
= (v4
&& v6
) ? FW3_FAMILY_ANY
516 : (v6
? FW3_FAMILY_V6
: FW3_FAMILY_V4
);
518 put_value(ptr
, &icmp
, sizeof(icmp
), is_list
);
523 fw3_parse_protocol(void *ptr
, const char *val
, bool is_list
)
525 struct fw3_protocol proto
= { };
526 struct protoent
*ent
;
532 while (isspace(*++val
));
535 if (!strcmp(val
, "all"))
538 put_value(ptr
, &proto
, sizeof(proto
), is_list
);
541 else if (!strcmp(val
, "icmpv6"))
545 else if (!strcmp(val
, "tcpudp"))
548 if (put_value(ptr
, &proto
, sizeof(proto
), is_list
))
551 put_value(ptr
, &proto
, sizeof(proto
), is_list
);
557 ent
= getprotobyname(val
);
561 proto
.protocol
= ent
->p_proto
;
562 put_value(ptr
, &proto
, sizeof(proto
), is_list
);
566 proto
.protocol
= strtoul(val
, &e
, 10);
568 if ((e
== val
) || (*e
!= 0))
571 put_value(ptr
, &proto
, sizeof(proto
), is_list
);
576 fw3_parse_ipset_method(void *ptr
, const char *val
, bool is_list
)
578 return parse_enum(ptr
, val
, &fw3_ipset_method_names
[FW3_IPSET_METHOD_BITMAP
],
579 FW3_IPSET_METHOD_BITMAP
, FW3_IPSET_METHOD_LIST
);
583 fw3_parse_ipset_datatype(void *ptr
, const char *val
, bool is_list
)
585 struct fw3_ipset_datatype type
= { };
589 if (!strncmp(val
, "dest_", 5))
594 else if (!strncmp(val
, "dst_", 4))
599 else if (!strncmp(val
, "src_", 4))
605 if (parse_enum(&type
.type
, val
, &fw3_ipset_type_names
[FW3_IPSET_TYPE_IP
],
606 FW3_IPSET_TYPE_IP
, FW3_IPSET_TYPE_SET
))
608 put_value(ptr
, &type
, sizeof(type
), is_list
);
616 fw3_parse_date(void *ptr
, const char *val
, bool is_list
)
618 unsigned int year
= 1970, mon
= 1, day
= 1, hour
= 0, min
= 0, sec
= 0;
619 struct tm tm
= { 0 };
622 year
= strtoul(val
, &p
, 10);
623 if ((*p
!= '-' && *p
) || year
< 1970 || year
> 2038)
628 mon
= strtoul(++p
, &p
, 10);
629 if ((*p
!= '-' && *p
) || mon
> 12)
634 day
= strtoul(++p
, &p
, 10);
635 if ((*p
!= 'T' && *p
) || day
> 31)
640 hour
= strtoul(++p
, &p
, 10);
641 if ((*p
!= ':' && *p
) || hour
> 23)
646 min
= strtoul(++p
, &p
, 10);
647 if ((*p
!= ':' && *p
) || min
> 59)
652 sec
= strtoul(++p
, &p
, 10);
657 tm
.tm_year
= year
- 1900;
664 if (mktime(&tm
) >= 0)
666 *((struct tm
*)ptr
) = tm
;
675 fw3_parse_time(void *ptr
, const char *val
, bool is_list
)
677 unsigned int hour
= 0, min
= 0, sec
= 0;
680 hour
= strtoul(val
, &p
, 10);
681 if (*p
!= ':' || hour
> 23)
684 min
= strtoul(++p
, &p
, 10);
685 if ((*p
!= ':' && *p
) || min
> 59)
690 sec
= strtoul(++p
, &p
, 10);
695 *((int *)ptr
) = 60 * 60 * hour
+ 60 * min
+ sec
;
703 fw3_parse_weekdays(void *ptr
, const char *val
, bool is_list
)
710 setbit(*(uint8_t *)ptr
, 0);
711 while (isspace(*++val
));
714 if (!(s
= strdup(val
)))
717 for (p
= strtok(s
, " \t"); p
; p
= strtok(NULL
, " \t"))
719 if (!parse_enum(&w
, p
, weekdays
, 1, 7))
721 w
= strtoul(p
, &p
, 10);
723 if (*p
|| w
< 1 || w
> 7)
730 setbit(*(uint8_t *)ptr
, w
);
738 fw3_parse_monthdays(void *ptr
, const char *val
, bool is_list
)
745 setbit(*(uint32_t *)ptr
, 0);
746 while (isspace(*++val
));
749 if (!(s
= strdup(val
)))
752 for (p
= strtok(s
, " \t"); p
; p
= strtok(NULL
, " \t"))
754 d
= strtoul(p
, &p
, 10);
756 if (*p
|| d
< 1 || d
> 31)
762 setbit(*(uint32_t *)ptr
, d
);
770 fw3_parse_include_type(void *ptr
, const char *val
, bool is_list
)
772 return parse_enum(ptr
, val
, include_types
,
773 FW3_INC_TYPE_SCRIPT
, FW3_INC_TYPE_RESTORE
);
777 fw3_parse_reflection_source(void *ptr
, const char *val
, bool is_list
)
779 return parse_enum(ptr
, val
, reflection_sources
,
780 FW3_REFLECTION_INTERNAL
, FW3_REFLECTION_EXTERNAL
);
784 fw3_parse_mark(void *ptr
, const char *val
, bool is_list
)
788 struct fw3_mark
*m
= ptr
;
793 while (isspace(*++val
));
796 if ((s
= strchr(val
, '/')) != NULL
)
799 n
= strtoul(val
, &e
, 0);
805 m
->mask
= 0xFFFFFFFF;
809 n
= strtoul(s
, &e
, 0);
822 fw3_parse_setmatch(void *ptr
, const char *val
, bool is_list
)
824 struct fw3_setmatch
*m
= ptr
;
831 while (isspace(*++val
));
834 if (!(s
= strdup(val
)))
837 if (!(p
= strtok(s
, " \t")))
843 strncpy(m
->name
, p
, sizeof(m
->name
));
845 for (i
= 0, p
= strtok(NULL
, " \t,");
847 i
++, p
= strtok(NULL
, " \t,"))
849 if (!strncmp(p
, "dest", 4) || !strncmp(p
, "dst", 3))
851 else if (!strncmp(p
, "src", 3))
862 fw3_parse_direction(void *ptr
, const char *val
, bool is_list
)
867 if (!strcmp(val
, "in") || !strcmp(val
, "ingress"))
869 else if (!strcmp(val
, "out") || !strcmp(val
, "egress"))
879 fw3_parse_options(void *s
, const struct fw3_option
*opts
,
880 struct uci_section
*section
)
884 struct uci_element
*e
, *l
;
885 struct uci_option
*o
;
886 const struct fw3_option
*opt
;
887 struct list_head
*dest
;
890 uci_foreach_element(§ion
->options
, e
)
892 o
= uci_to_option(e
);
895 for (opt
= opts
; opt
->name
; opt
++)
900 if (strcmp(opt
->name
, e
->name
))
903 if (o
->type
== UCI_TYPE_LIST
)
907 warn_elem(e
, "must not be a list");
912 dest
= (struct list_head
*)((char *)s
+ opt
->offset
);
914 uci_foreach_element(&o
->v
.list
, l
)
919 if (!opt
->parse(dest
, l
->name
, true))
921 warn_elem(e
, "has invalid value '%s'", l
->name
);
937 if (!opt
->parse((char *)s
+ opt
->offset
, o
->v
.string
, false))
939 warn_elem(e
, "has invalid value '%s'", o
->v
.string
);
945 dest
= (struct list_head
*)((char *)s
+ opt
->offset
);
947 for (p
= strtok(v
, " \t"); p
!= NULL
; p
= strtok(NULL
, " \t"))
949 if (!opt
->parse(dest
, p
, true))
951 warn_elem(e
, "has invalid value '%s'", p
);
964 warn_elem(e
, "is unknown");
972 fw3_parse_blob_options(void *s
, const struct fw3_option
*opts
,
975 char *p
, *v
, buf
[16];
978 struct blob_attr
*o
, *e
;
979 const struct fw3_option
*opt
;
980 struct list_head
*dest
;
983 blobmsg_for_each_attr(o
, a
, rem
)
987 for (opt
= opts
; opt
->name
; opt
++)
992 if (strcmp(opt
->name
, blobmsg_name(o
)))
995 if (blobmsg_type(o
) == BLOBMSG_TYPE_ARRAY
)
999 fprintf(stderr
, "%s must not be a list\n", opt
->name
);
1004 dest
= (struct list_head
*)((char *)s
+ opt
->offset
);
1006 blobmsg_for_each_attr(e
, o
, erem
)
1008 if (blobmsg_type(e
) == BLOBMSG_TYPE_INT32
) {
1009 snprintf(buf
, sizeof(buf
), "%d", blobmsg_get_u32(e
));
1012 v
= blobmsg_get_string(e
);
1015 if (!opt
->parse(dest
, v
, true))
1017 fprintf(stderr
, "%s has invalid value '%s'\n", opt
->name
, v
);
1026 if (blobmsg_type(o
) == BLOBMSG_TYPE_INT32
) {
1027 snprintf(buf
, sizeof(buf
), "%d", blobmsg_get_u32(o
));
1030 v
= blobmsg_get_string(o
);
1036 if (!opt
->elem_size
)
1038 if (!opt
->parse((char *)s
+ opt
->offset
, v
, false))
1040 fprintf(stderr
, "%s has invalid value '%s'\n", opt
->name
, v
);
1046 dest
= (struct list_head
*)((char *)s
+ opt
->offset
);
1048 for (p
= strtok(v
, " \t"); p
!= NULL
; p
= strtok(NULL
, " \t"))
1050 if (!opt
->parse(dest
, p
, true))
1052 fprintf(stderr
, "%s has invalid value '%s'\n", opt
->name
, p
);
1065 fprintf(stderr
, "%s is unknown\n", blobmsg_name(o
));
1073 fw3_address_to_string(struct fw3_address
*address
, bool allow_invert
)
1075 char *p
, ip
[INET6_ADDRSTRLEN
];
1076 static char buf
[INET6_ADDRSTRLEN
* 2 + 2];
1080 if (address
->invert
&& allow_invert
)
1081 p
+= sprintf(p
, "!");
1083 inet_ntop(address
->family
== FW3_FAMILY_V4
? AF_INET
: AF_INET6
,
1084 &address
->address
.v4
, ip
, sizeof(ip
));
1086 p
+= sprintf(p
, "%s", ip
);
1090 inet_ntop(address
->family
== FW3_FAMILY_V4
? AF_INET
: AF_INET6
,
1091 &address
->address2
.v4
, ip
, sizeof(ip
));
1093 p
+= sprintf(p
, "-%s", ip
);
1097 p
+= sprintf(p
, "/%u", address
->mask
);