2 * Copyright (c) 2002-2003 Luigi Rizzo
3 * Copyright (c) 1996 Alex Nash, Paul Traina, Poul-Henning Kamp
4 * Copyright (c) 1994 Ugen J.S.Antsilevich
6 * Idea and grammar partially left from:
7 * Copyright (c) 1993 Daniel Boulet
9 * Redistribution and use in source forms, with and without modification,
10 * are permitted provided that this entire comment appears intact.
12 * Redistribution in binary form may occur without any restrictions.
13 * Obviously, it would be nice if you gave credit where credit is due
14 * but requiring it would be too onerous.
16 * This software is provided ``AS IS'' without any warranties of any kind.
18 * NEW command line interface for IP firewall facility
20 * $FreeBSD: head/sbin/ipfw/ipfw2.c 187983 2009-02-01 16:00:49Z luigi $
23 #include <sys/types.h>
24 #include <sys/socket.h>
25 #include <sys/sockio.h>
26 #include <sys/sysctl.h>
40 #include <time.h> /* ctime */
41 #include <timeconv.h> /* _long_to_time */
45 #include <net/ethernet.h>
46 #include <net/if.h> /* only IFNAMSIZ */
47 #include <netinet/in.h>
48 #include <netinet/in_systm.h> /* only n_short, n_long */
49 #include <netinet/ip.h>
50 #include <netinet/ip_icmp.h>
51 #include <netinet/ip_fw.h>
52 #include <netinet/tcp.h>
53 #include <arpa/inet.h>
55 struct cmdline_opts co; /* global options */
57 int resvd_set_number = RESVD_SET;
59 #define GET_UINT_ARG(arg, min, max, tok, s_x) do { \
61 errx(EX_USAGE, "%s: missing argument", match_value(s_x, tok)); \
62 if (_substrcmp(*av, "tablearg") == 0) { \
63 arg = IP_FW_TABLEARG; \
71 val = strtol(*av, &end, 10); \
73 if (!isdigit(**av) || *end != '\0' || (val == 0 && errno == EINVAL)) \
74 errx(EX_DATAERR, "%s: invalid argument: %s", \
75 match_value(s_x, tok), *av); \
77 if (errno == ERANGE || val < min || val > max) \
78 errx(EX_DATAERR, "%s: argument is out of range (%u..%u): %s", \
79 match_value(s_x, tok), min, max, *av); \
81 if (val == IP_FW_TABLEARG) \
82 errx(EX_DATAERR, "%s: illegal argument value: %s", \
83 match_value(s_x, tok), *av); \
89 PRINT_UINT_ARG(const char *str, uint32_t arg)
93 if (arg == IP_FW_TABLEARG)
99 static struct _s_x f_tcpflags[] = {
110 static struct _s_x f_tcpopts[] = {
111 { "mss", IP_FW_TCPOPT_MSS },
112 { "maxseg", IP_FW_TCPOPT_MSS },
113 { "window", IP_FW_TCPOPT_WINDOW },
114 { "sack", IP_FW_TCPOPT_SACK },
115 { "ts", IP_FW_TCPOPT_TS },
116 { "timestamp", IP_FW_TCPOPT_TS },
117 { "cc", IP_FW_TCPOPT_CC },
123 * IP options span the range 0 to 255 so we need to remap them
124 * (though in fact only the low 5 bits are significant).
126 static struct _s_x f_ipopts[] = {
127 { "ssrr", IP_FW_IPOPT_SSRR},
128 { "lsrr", IP_FW_IPOPT_LSRR},
129 { "rr", IP_FW_IPOPT_RR},
130 { "ts", IP_FW_IPOPT_TS},
135 static struct _s_x f_iptos[] = {
136 { "lowdelay", IPTOS_LOWDELAY},
137 { "throughput", IPTOS_THROUGHPUT},
138 { "reliability", IPTOS_RELIABILITY},
139 { "mincost", IPTOS_MINCOST},
140 { "congestion", IPTOS_ECN_CE},
141 { "ecntransport", IPTOS_ECN_ECT0},
142 { "ip tos option", 0},
146 static struct _s_x limit_masks[] = {
147 {"all", DYN_SRC_ADDR|DYN_SRC_PORT|DYN_DST_ADDR|DYN_DST_PORT},
148 {"src-addr", DYN_SRC_ADDR},
149 {"src-port", DYN_SRC_PORT},
150 {"dst-addr", DYN_DST_ADDR},
151 {"dst-port", DYN_DST_PORT},
156 * we use IPPROTO_ETHERTYPE as a fake protocol id to call the print routines
157 * This is only used in this code.
159 #define IPPROTO_ETHERTYPE 0x1000
160 static struct _s_x ether_types[] = {
162 * Note, we cannot use "-:&/" in the names because they are field
163 * separators in the type specifications. Also, we use s = NULL as
164 * end-delimiter, because a type of 0 can be legal.
177 { "pppoe_disc", 0x8863 },
178 { "pppoe_sess", 0x8864 },
179 { "ipx_8022", 0x00E0 },
180 { "ipx_8023", 0x0000 },
181 { "ipx_ii", 0x8137 },
182 { "ipx_snap", 0x8137 },
189 static struct _s_x rule_actions[] = {
190 { "accept", TOK_ACCEPT },
191 { "pass", TOK_ACCEPT },
192 { "allow", TOK_ACCEPT },
193 { "permit", TOK_ACCEPT },
194 { "count", TOK_COUNT },
195 { "pipe", TOK_PIPE },
196 { "queue", TOK_QUEUE },
197 { "divert", TOK_DIVERT },
199 { "netgraph", TOK_NETGRAPH },
200 { "ngtee", TOK_NGTEE },
201 { "fwd", TOK_FORWARD },
202 { "forward", TOK_FORWARD },
203 { "skipto", TOK_SKIPTO },
204 { "deny", TOK_DENY },
205 { "drop", TOK_DENY },
206 { "reject", TOK_REJECT },
207 { "reset6", TOK_RESET6 },
208 { "reset", TOK_RESET },
209 { "unreach6", TOK_UNREACH6 },
210 { "unreach", TOK_UNREACH },
211 { "check-state", TOK_CHECKSTATE },
212 { "//", TOK_COMMENT },
214 { "reass", TOK_REASS },
215 { "setfib", TOK_SETFIB },
216 { NULL, 0 } /* terminator */
219 static struct _s_x rule_action_params[] = {
220 { "altq", TOK_ALTQ },
223 { "untag", TOK_UNTAG },
224 { NULL, 0 } /* terminator */
227 static struct _s_x rule_options[] = {
228 { "tagged", TOK_TAGGED },
231 { "jail", TOK_JAIL },
233 { "limit", TOK_LIMIT },
234 { "keep-state", TOK_KEEPSTATE },
235 { "bridged", TOK_LAYER2 },
236 { "layer2", TOK_LAYER2 },
238 { "diverted", TOK_DIVERTED },
239 { "diverted-loopback", TOK_DIVERTEDLOOPBACK },
240 { "diverted-output", TOK_DIVERTEDOUTPUT },
241 { "xmit", TOK_XMIT },
242 { "recv", TOK_RECV },
244 { "fragment", TOK_FRAG },
245 { "frag", TOK_FRAG },
247 { "ipoptions", TOK_IPOPTS },
248 { "ipopts", TOK_IPOPTS },
249 { "iplen", TOK_IPLEN },
250 { "ipid", TOK_IPID },
251 { "ipprecedence", TOK_IPPRECEDENCE },
252 { "iptos", TOK_IPTOS },
253 { "ipttl", TOK_IPTTL },
254 { "ipversion", TOK_IPVER },
255 { "ipver", TOK_IPVER },
256 { "estab", TOK_ESTAB },
257 { "established", TOK_ESTAB },
258 { "setup", TOK_SETUP },
259 { "tcpdatalen", TOK_TCPDATALEN },
260 { "tcpflags", TOK_TCPFLAGS },
261 { "tcpflgs", TOK_TCPFLAGS },
262 { "tcpoptions", TOK_TCPOPTS },
263 { "tcpopts", TOK_TCPOPTS },
264 { "tcpseq", TOK_TCPSEQ },
265 { "tcpack", TOK_TCPACK },
266 { "tcpwin", TOK_TCPWIN },
267 { "icmptype", TOK_ICMPTYPES },
268 { "icmptypes", TOK_ICMPTYPES },
269 { "dst-ip", TOK_DSTIP },
270 { "src-ip", TOK_SRCIP },
271 { "dst-port", TOK_DSTPORT },
272 { "src-port", TOK_SRCPORT },
273 { "proto", TOK_PROTO },
276 { "mac-type", TOK_MACTYPE },
277 { "verrevpath", TOK_VERREVPATH },
278 { "versrcreach", TOK_VERSRCREACH },
279 { "antispoof", TOK_ANTISPOOF },
280 { "ipsec", TOK_IPSEC },
281 { "icmp6type", TOK_ICMP6TYPES },
282 { "icmp6types", TOK_ICMP6TYPES },
283 { "ext6hdr", TOK_EXT6HDR},
284 { "flow-id", TOK_FLOWID},
289 { "dst-ipv6", TOK_DSTIP6},
290 { "dst-ip6", TOK_DSTIP6},
291 { "src-ipv6", TOK_SRCIP6},
292 { "src-ip6", TOK_SRCIP6},
293 { "//", TOK_COMMENT },
295 { "not", TOK_NOT }, /* pseudo option */
296 { "!", /* escape ? */ TOK_NOT }, /* pseudo option */
297 { "or", TOK_OR }, /* pseudo option */
298 { "|", /* escape */ TOK_OR }, /* pseudo option */
299 { "{", TOK_STARTBRACE }, /* pseudo option */
300 { "(", TOK_STARTBRACE }, /* pseudo option */
301 { "}", TOK_ENDBRACE }, /* pseudo option */
302 { ")", TOK_ENDBRACE }, /* pseudo option */
303 { NULL, 0 } /* terminator */
307 * The following is used to generate a printable argument for
308 * 64-bit numbers, irrespective of platform alignment and bit size.
309 * Because all the printf in this program use %llu as a format,
310 * we just return an unsigned long long, which is larger than
311 * we need in certain cases, but saves the hassle of using
312 * PRIu64 as a format specifier.
313 * We don't care about inlining, this is not performance critical code.
316 align_uint64(const uint64_t *pll)
320 bcopy (pll, &ret, sizeof(ret));
325 safe_calloc(size_t number, size_t size)
327 void *ret = calloc(number, size);
330 err(EX_OSERR, "calloc");
335 safe_realloc(void *ptr, size_t size)
337 void *ret = realloc(ptr, size);
340 err(EX_OSERR, "realloc");
345 * conditionally runs the command.
348 do_cmd(int optname, void *optval, uintptr_t optlen)
350 static int s = -1; /* the socket */
357 s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW);
359 err(EX_UNAVAILABLE, "socket");
361 if (optname == IP_FW_GET || optname == IP_DUMMYNET_GET ||
362 optname == IP_FW_ADD || optname == IP_FW_TABLE_LIST ||
363 optname == IP_FW_TABLE_GETSIZE ||
364 optname == IP_FW_NAT_GET_CONFIG ||
365 optname == IP_FW_NAT_GET_LOG)
366 i = getsockopt(s, IPPROTO_IP, optname, optval,
367 (socklen_t *)optlen);
369 i = setsockopt(s, IPPROTO_IP, optname, optval, optlen);
374 * match_token takes a table and a string, returns the value associated
375 * with the string (-1 in case of failure).
378 match_token(struct _s_x *table, char *string)
381 uint i = strlen(string);
383 for (pt = table ; i && pt->s != NULL ; pt++)
384 if (strlen(pt->s) == i && !bcmp(string, pt->s, i))
390 * match_value takes a table and a value, returns the string associated
391 * with the value (NULL in case of failure).
394 match_value(struct _s_x *p, int value)
396 for (; p->s != NULL; p++)
403 * _substrcmp takes two strings and returns 1 if they do not match,
404 * and 0 if they match exactly or the first string is a sub-string
405 * of the second. A warning is printed to stderr in the case that the
406 * first string is a sub-string of the second.
408 * This function will be removed in the future through the usual
409 * deprecation process.
412 _substrcmp(const char *str1, const char* str2)
415 if (strncmp(str1, str2, strlen(str1)) != 0)
418 if (strlen(str1) != strlen(str2))
419 warnx("DEPRECATED: '%s' matched '%s' as a sub-string",
425 * _substrcmp2 takes three strings and returns 1 if the first two do not match,
426 * and 0 if they match exactly or the second string is a sub-string
427 * of the first. A warning is printed to stderr in the case that the
428 * first string does not match the third.
430 * This function exists to warn about the bizzare construction
431 * strncmp(str, "by", 2) which is used to allow people to use a shotcut
432 * for "bytes". The problem is that in addition to accepting "by",
433 * "byt", "byte", and "bytes", it also excepts "by_rabid_dogs" and any
434 * other string beginning with "by".
436 * This function will be removed in the future through the usual
437 * deprecation process.
440 _substrcmp2(const char *str1, const char* str2, const char* str3)
443 if (strncmp(str1, str2, strlen(str2)) != 0)
446 if (strcmp(str1, str3) != 0)
447 warnx("DEPRECATED: '%s' matched '%s'",
453 * prints one port, symbolic or numeric
456 print_port(int proto, uint16_t port)
459 if (proto == IPPROTO_ETHERTYPE) {
462 if (co.do_resolv && (s = match_value(ether_types, port)) )
465 printf("0x%04x", port);
467 struct servent *se = NULL;
469 struct protoent *pe = getprotobynumber(proto);
471 se = getservbyport(htons(port), pe ? pe->p_name : NULL);
474 printf("%s", se->s_name);
480 static struct _s_x _port_name[] = {
481 {"dst-port", O_IP_DSTPORT},
482 {"src-port", O_IP_SRCPORT},
486 {"mac-type", O_MAC_TYPE},
487 {"tcpdatalen", O_TCPDATALEN},
488 {"tagged", O_TAGGED},
493 * Print the values in a list 16-bit items of the types above.
494 * XXX todo: add support for mask.
497 print_newports(ipfw_insn_u16 *cmd, int proto, int opcode)
499 uint16_t *p = cmd->ports;
504 sep = match_value(_port_name, opcode);
510 for (i = F_LEN((ipfw_insn *)cmd) - 1; i > 0; i--, p += 2) {
512 print_port(proto, p[0]);
515 print_port(proto, p[1]);
522 * Like strtol, but also translates service names into port numbers
523 * for some protocols.
525 * proto == -1 disables the protocol check;
526 * proto == IPPROTO_ETHERTYPE looks up an internal table
527 * proto == <some value in /etc/protocols> matches the values there.
528 * Returns *end == s in case the parameter is not found.
531 strtoport(char *s, char **end, int base, int proto)
537 *end = s; /* default - not found */
539 return 0; /* not found */
542 return strtol(s, end, base);
545 * find separator. '\\' escapes the next char.
547 for (s1 = s; *s1 && (isalnum(*s1) || *s1 == '\\') ; s1++)
548 if (*s1 == '\\' && s1[1] != '\0')
551 buf = safe_calloc(s1 - s + 1, 1);
554 * copy into a buffer skipping backslashes
556 for (p = s, i = 0; p != s1 ; p++)
561 if (proto == IPPROTO_ETHERTYPE) {
562 i = match_token(ether_types, buf);
564 if (i != -1) { /* found */
569 struct protoent *pe = NULL;
573 pe = getprotobynumber(proto);
575 se = getservbyname(buf, pe ? pe->p_name : NULL);
579 return ntohs(se->s_port);
582 return 0; /* not found */
586 * Fill the body of the command with the list of port ranges.
589 fill_newports(ipfw_insn_u16 *cmd, char *av, int proto)
591 uint16_t a, b, *p = cmd->ports;
596 a = strtoport(av, &s, 0, proto);
597 if (s == av) /* empty or invalid argument */
601 case '-': /* a range */
603 b = strtoport(av, &s, 0, proto);
604 /* Reject expressions like '1-abc' or '1-2-3'. */
605 if (s == av || (*s != ',' && *s != '\0'))
610 case ',': /* comma separated list */
615 warnx("port list: invalid separator <%c> in <%s>",
625 if (i + 1 > F_LEN_MASK)
626 errx(EX_DATAERR, "too many ports/ranges\n");
627 cmd->o.len |= i + 1; /* leave F_NOT and F_OR untouched */
632 static struct _s_x icmpcodes[] = {
633 { "net", ICMP_UNREACH_NET },
634 { "host", ICMP_UNREACH_HOST },
635 { "protocol", ICMP_UNREACH_PROTOCOL },
636 { "port", ICMP_UNREACH_PORT },
637 { "needfrag", ICMP_UNREACH_NEEDFRAG },
638 { "srcfail", ICMP_UNREACH_SRCFAIL },
639 { "net-unknown", ICMP_UNREACH_NET_UNKNOWN },
640 { "host-unknown", ICMP_UNREACH_HOST_UNKNOWN },
641 { "isolated", ICMP_UNREACH_ISOLATED },
642 { "net-prohib", ICMP_UNREACH_NET_PROHIB },
643 { "host-prohib", ICMP_UNREACH_HOST_PROHIB },
644 { "tosnet", ICMP_UNREACH_TOSNET },
645 { "toshost", ICMP_UNREACH_TOSHOST },
646 { "filter-prohib", ICMP_UNREACH_FILTER_PROHIB },
647 { "host-precedence", ICMP_UNREACH_HOST_PRECEDENCE },
648 { "precedence-cutoff", ICMP_UNREACH_PRECEDENCE_CUTOFF },
653 fill_reject_code(u_short *codep, char *str)
658 val = strtoul(str, &s, 0);
659 if (s == str || *s != '\0' || val >= 0x100)
660 val = match_token(icmpcodes, str);
662 errx(EX_DATAERR, "unknown ICMP unreachable code ``%s''", str);
668 print_reject_code(uint16_t code)
670 char const *s = match_value(icmpcodes, code);
673 printf("unreach %s", s);
675 printf("unreach %u", code);
679 * Returns the number of bits set (from left) in a contiguous bitmask,
680 * or -1 if the mask is not contiguous.
681 * XXX this needs a proper fix.
682 * This effectively works on masks in big-endian (network) format.
683 * when compiled on little endian architectures.
685 * First bit is bit 7 of the first byte -- note, for MAC addresses,
686 * the first bit on the wire is bit 0 of the first byte.
687 * len is the max length in bits.
690 contigmask(uint8_t *p, int len)
694 for (i=0; i<len ; i++)
695 if ( (p[i/8] & (1 << (7 - (i%8)))) == 0) /* first bit unset */
697 for (n=i+1; n < len; n++)
698 if ( (p[n/8] & (1 << (7 - (n%8)))) != 0)
699 return -1; /* mask not contiguous */
704 * print flags set/clear in the two bitmasks passed as parameters.
705 * There is a specialized check for f_tcpflags.
708 print_flags(char const *name, ipfw_insn *cmd, struct _s_x *list)
710 char const *comma = "";
712 uint8_t set = cmd->arg1 & 0xff;
713 uint8_t clear = (cmd->arg1 >> 8) & 0xff;
715 if (list == f_tcpflags && set == TH_SYN && clear == TH_ACK) {
720 printf(" %s ", name);
721 for (i=0; list[i].x != 0; i++) {
722 if (set & list[i].x) {
724 printf("%s%s", comma, list[i].s);
727 if (clear & list[i].x) {
729 printf("%s!%s", comma, list[i].s);
736 * Print the ip address contained in a command.
739 print_ip(ipfw_insn_ip *cmd, char const *s)
741 struct hostent *he = NULL;
742 int len = F_LEN((ipfw_insn *)cmd);
743 uint32_t *a = ((ipfw_insn_u32 *)cmd)->d;
745 printf("%s%s ", cmd->o.len & F_NOT ? " not": "", s);
747 if (cmd->o.opcode == O_IP_SRC_ME || cmd->o.opcode == O_IP_DST_ME) {
751 if (cmd->o.opcode == O_IP_SRC_LOOKUP ||
752 cmd->o.opcode == O_IP_DST_LOOKUP) {
753 printf("table(%u", ((ipfw_insn *)cmd)->arg1);
754 if (len == F_INSN_SIZE(ipfw_insn_u32))
759 if (cmd->o.opcode == O_IP_SRC_SET || cmd->o.opcode == O_IP_DST_SET) {
760 uint32_t x, *map = (uint32_t *)&(cmd->mask);
766 cmd->addr.s_addr = htonl(cmd->addr.s_addr);
767 printf("%s/%d", inet_ntoa(cmd->addr),
768 contigmask((uint8_t *)&x, 32));
769 x = cmd->addr.s_addr = htonl(cmd->addr.s_addr);
770 x &= 0xff; /* base */
772 * Print bits and ranges.
773 * Locate first bit set (i), then locate first bit unset (j).
774 * If we have 3+ consecutive bits set, then print them as a
775 * range, otherwise only print the initial bit and rescan.
777 for (i=0; i < cmd->o.arg1; i++)
778 if (map[i/32] & (1<<(i & 31))) {
779 for (j=i+1; j < cmd->o.arg1; j++)
780 if (!(map[ j/32] & (1<<(j & 31))))
782 printf("%c%d", comma, i+x);
783 if (j>i+2) { /* range has at least 3 elements */
784 printf("-%d", j-1+x);
793 * len == 2 indicates a single IP, whereas lists of 1 or more
794 * addr/mask pairs have len = (2n+1). We convert len to n so we
795 * use that to count the number of entries.
797 for (len = len / 2; len > 0; len--, a += 2) {
798 int mb = /* mask length */
799 (cmd->o.opcode == O_IP_SRC || cmd->o.opcode == O_IP_DST) ?
800 32 : contigmask((uint8_t *)&(a[1]), 32);
801 if (mb == 32 && co.do_resolv)
802 he = gethostbyaddr((char *)&(a[0]), sizeof(u_long), AF_INET);
803 if (he != NULL) /* resolved to name */
804 printf("%s", he->h_name);
805 else if (mb == 0) /* any */
807 else { /* numeric IP followed by some kind of mask */
808 printf("%s", inet_ntoa( *((struct in_addr *)&a[0]) ) );
810 printf(":%s", inet_ntoa( *((struct in_addr *)&a[1]) ) );
820 * prints a MAC address/mask pair
823 print_mac(uint8_t *addr, uint8_t *mask)
825 int l = contigmask(mask, 48);
830 printf(" %02x:%02x:%02x:%02x:%02x:%02x",
831 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
833 printf("&%02x:%02x:%02x:%02x:%02x:%02x",
834 mask[0], mask[1], mask[2],
835 mask[3], mask[4], mask[5]);
842 fill_icmptypes(ipfw_insn_u32 *cmd, char *av)
851 type = strtoul(av, &av, 0);
853 if (*av != ',' && *av != '\0')
854 errx(EX_DATAERR, "invalid ICMP type");
857 errx(EX_DATAERR, "ICMP type out of range");
859 cmd->d[0] |= 1 << type;
861 cmd->o.opcode = O_ICMPTYPE;
862 cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32);
866 print_icmptypes(ipfw_insn_u32 *cmd)
871 printf(" icmptypes");
872 for (i = 0; i < 32; i++) {
873 if ( (cmd->d[0] & (1 << (i))) == 0)
875 printf("%c%d", sep, i);
881 * show_ipfw() prints the body of an ipfw rule.
882 * Because the standard rule has at least proto src_ip dst_ip, we use
883 * a helper function to produce these entries if not provided explicitly.
884 * The first argument is the list of fields we have, the second is
885 * the list of fields we want to be printed.
887 * Special cases if we have provided a MAC header:
888 * + if the rule does not contain IP addresses/ports, do not print them;
889 * + if the rule does not contain an IP proto, print "all" instead of "ip";
891 * Once we have 'have_options', IP header fields are printed as options.
893 #define HAVE_PROTO 0x0001
894 #define HAVE_SRCIP 0x0002
895 #define HAVE_DSTIP 0x0004
896 #define HAVE_PROTO4 0x0008
897 #define HAVE_PROTO6 0x0010
898 #define HAVE_OPTIONS 0x8000
900 #define HAVE_IP (HAVE_PROTO | HAVE_SRCIP | HAVE_DSTIP)
902 show_prerequisites(int *flags, int want, int cmd __unused)
906 if ( (*flags & HAVE_IP) == HAVE_IP)
907 *flags |= HAVE_OPTIONS;
909 if ( !(*flags & HAVE_OPTIONS)) {
910 if ( !(*flags & HAVE_PROTO) && (want & HAVE_PROTO)) {
911 if ( (*flags & HAVE_PROTO4))
913 else if ( (*flags & HAVE_PROTO6))
918 if ( !(*flags & HAVE_SRCIP) && (want & HAVE_SRCIP))
920 if ( !(*flags & HAVE_DSTIP) && (want & HAVE_DSTIP))
927 show_ipfw(struct ip_fw *rule, int pcwidth, int bcwidth)
929 static int twidth = 0;
931 ipfw_insn *cmd, *tagptr = NULL;
932 const char *comment = NULL; /* ptr to comment if we have one */
933 int proto = 0; /* default */
934 int flags = 0; /* prerequisites */
935 ipfw_insn_log *logptr = NULL; /* set if we find an O_LOG */
936 ipfw_insn_altq *altqptr = NULL; /* set if we find an O_ALTQ */
937 int or_block = 0; /* we are in an or block */
938 uint32_t set_disable;
940 bcopy(&rule->next_rule, &set_disable, sizeof(set_disable));
942 if (set_disable & (1 << rule->set)) { /* disabled */
946 printf("# DISABLED ");
948 printf("%05u ", rule->rulenum);
950 if (pcwidth>0 || bcwidth>0)
951 printf("%*llu %*llu ", pcwidth, align_uint64(&rule->pcnt),
952 bcwidth, align_uint64(&rule->bcnt));
955 printf("%10u ", rule->timestamp);
956 else if (co.do_time == 1) {
958 time_t t = (time_t)0;
961 strcpy(timestr, ctime(&t));
962 *strchr(timestr, '\n') = '\0';
963 twidth = strlen(timestr);
965 if (rule->timestamp) {
966 t = _long_to_time(rule->timestamp);
968 strcpy(timestr, ctime(&t));
969 *strchr(timestr, '\n') = '\0';
970 printf("%s ", timestr);
972 printf("%*s", twidth, " ");
977 printf("set %d ", rule->set);
980 * print the optional "match probability"
982 if (rule->cmd_len > 0) {
984 if (cmd->opcode == O_PROB) {
985 ipfw_insn_u32 *p = (ipfw_insn_u32 *)cmd;
986 double d = 1.0 * p->d[0];
988 d = (d / 0x7fffffff);
989 printf("prob %f ", d);
994 * first print actions
996 for (l = rule->cmd_len - rule->act_ofs, cmd = ACTION_PTR(rule);
997 l > 0 ; l -= F_LEN(cmd), cmd += F_LEN(cmd)) {
998 switch(cmd->opcode) {
1000 printf("check-state");
1001 flags = HAVE_IP; /* avoid printing anything else */
1017 if (cmd->arg1 == ICMP_REJECT_RST)
1019 else if (cmd->arg1 == ICMP_UNREACH_HOST)
1022 print_reject_code(cmd->arg1);
1026 if (cmd->arg1 == ICMP6_UNREACH_RST)
1029 print_unreach6_code(cmd->arg1);
1033 PRINT_UINT_ARG("skipto ", cmd->arg1);
1037 PRINT_UINT_ARG("pipe ", cmd->arg1);
1041 PRINT_UINT_ARG("queue ", cmd->arg1);
1045 PRINT_UINT_ARG("divert ", cmd->arg1);
1049 PRINT_UINT_ARG("tee ", cmd->arg1);
1053 PRINT_UINT_ARG("netgraph ", cmd->arg1);
1057 PRINT_UINT_ARG("ngtee ", cmd->arg1);
1062 ipfw_insn_sa *s = (ipfw_insn_sa *)cmd;
1064 if (s->sa.sin_addr.s_addr == INADDR_ANY) {
1065 printf("fwd tablearg");
1067 printf("fwd %s", inet_ntoa(s->sa.sin_addr));
1070 printf(",%d", s->sa.sin_port);
1074 case O_LOG: /* O_LOG is printed last */
1075 logptr = (ipfw_insn_log *)cmd;
1078 case O_ALTQ: /* O_ALTQ is printed after O_LOG */
1079 altqptr = (ipfw_insn_altq *)cmd;
1087 PRINT_UINT_ARG("nat ", cmd->arg1);
1091 PRINT_UINT_ARG("setfib ", cmd->arg1);
1099 printf("** unrecognized action %d len %d ",
1100 cmd->opcode, cmd->len);
1104 if (logptr->max_log > 0)
1105 printf(" log logamount %d", logptr->max_log);
1110 print_altq_cmd(altqptr);
1113 if (tagptr->len & F_NOT)
1114 PRINT_UINT_ARG(" untag ", tagptr->arg1);
1116 PRINT_UINT_ARG(" tag ", tagptr->arg1);
1120 * then print the body.
1122 for (l = rule->act_ofs, cmd = rule->cmd ;
1123 l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) {
1124 if ((cmd->len & F_OR) || (cmd->len & F_NOT))
1126 if (cmd->opcode == O_IP4) {
1127 flags |= HAVE_PROTO4;
1129 } else if (cmd->opcode == O_IP6) {
1130 flags |= HAVE_PROTO6;
1134 if (rule->_pad & 1) { /* empty rules before options */
1135 if (!co.do_compact) {
1136 show_prerequisites(&flags, HAVE_PROTO, 0);
1137 printf(" from any to any");
1139 flags |= HAVE_IP | HAVE_OPTIONS;
1142 if (co.comment_only)
1145 for (l = rule->act_ofs, cmd = rule->cmd ;
1146 l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) {
1148 ipfw_insn_u32 *cmd32 = (ipfw_insn_u32 *)cmd;
1150 if (co.comment_only) {
1151 if (cmd->opcode != O_NOP)
1153 printf(" // %s\n", (char *)(cmd + 1));
1157 show_prerequisites(&flags, 0, cmd->opcode);
1159 switch(cmd->opcode) {
1161 break; /* done already */
1164 break; /* no need to print anything here */
1167 case O_IP_SRC_LOOKUP:
1171 show_prerequisites(&flags, HAVE_PROTO, 0);
1172 if (!(flags & HAVE_SRCIP))
1174 if ((cmd->len & F_OR) && !or_block)
1176 print_ip((ipfw_insn_ip *)cmd,
1177 (flags & HAVE_OPTIONS) ? " src-ip" : "");
1178 flags |= HAVE_SRCIP;
1182 case O_IP_DST_LOOKUP:
1186 show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0);
1187 if (!(flags & HAVE_DSTIP))
1189 if ((cmd->len & F_OR) && !or_block)
1191 print_ip((ipfw_insn_ip *)cmd,
1192 (flags & HAVE_OPTIONS) ? " dst-ip" : "");
1193 flags |= HAVE_DSTIP;
1197 case O_IP6_SRC_MASK:
1199 show_prerequisites(&flags, HAVE_PROTO, 0);
1200 if (!(flags & HAVE_SRCIP))
1202 if ((cmd->len & F_OR) && !or_block)
1204 print_ip6((ipfw_insn_ip6 *)cmd,
1205 (flags & HAVE_OPTIONS) ? " src-ip6" : "");
1206 flags |= HAVE_SRCIP | HAVE_PROTO;
1210 case O_IP6_DST_MASK:
1212 show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0);
1213 if (!(flags & HAVE_DSTIP))
1215 if ((cmd->len & F_OR) && !or_block)
1217 print_ip6((ipfw_insn_ip6 *)cmd,
1218 (flags & HAVE_OPTIONS) ? " dst-ip6" : "");
1219 flags |= HAVE_DSTIP;
1223 print_flow6id( (ipfw_insn_u32 *) cmd );
1224 flags |= HAVE_OPTIONS;
1228 show_prerequisites(&flags, HAVE_IP, 0);
1230 show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0);
1231 if ((cmd->len & F_OR) && !or_block)
1233 if (cmd->len & F_NOT)
1235 print_newports((ipfw_insn_u16 *)cmd, proto,
1236 (flags & HAVE_OPTIONS) ? cmd->opcode : 0);
1240 struct protoent *pe = NULL;
1242 if ((cmd->len & F_OR) && !or_block)
1244 if (cmd->len & F_NOT)
1247 pe = getprotobynumber(cmd->arg1);
1248 if ((flags & (HAVE_PROTO4 | HAVE_PROTO6)) &&
1249 !(flags & HAVE_PROTO))
1250 show_prerequisites(&flags,
1251 HAVE_IP | HAVE_OPTIONS, 0);
1252 if (flags & HAVE_OPTIONS)
1255 printf(" %s", pe->p_name);
1257 printf(" %u", cmd->arg1);
1259 flags |= HAVE_PROTO;
1262 default: /*options ... */
1263 if (!(cmd->len & (F_OR|F_NOT)))
1264 if (((cmd->opcode == O_IP6) &&
1265 (flags & HAVE_PROTO6)) ||
1266 ((cmd->opcode == O_IP4) &&
1267 (flags & HAVE_PROTO4)))
1269 show_prerequisites(&flags, HAVE_IP | HAVE_OPTIONS, 0);
1270 if ((cmd->len & F_OR) && !or_block)
1272 if (cmd->len & F_NOT && cmd->opcode != O_IN)
1274 switch(cmd->opcode) {
1276 ipfw_insn_mac *m = (ipfw_insn_mac *)cmd;
1279 print_mac(m->addr, m->mask);
1280 print_mac(m->addr + 6, m->mask + 6);
1285 print_newports((ipfw_insn_u16 *)cmd,
1286 IPPROTO_ETHERTYPE, cmd->opcode);
1295 printf(" fib %u", cmd->arg1 );
1299 printf(cmd->len & F_NOT ? " out" : " in");
1303 switch (cmd->arg1) {
1305 printf(" diverted");
1308 printf(" diverted-loopback");
1311 printf(" diverted-output");
1314 printf(" diverted-?<%u>", cmd->arg1);
1327 ipfw_insn_if *cmdif = (ipfw_insn_if *)cmd;
1329 if (cmd->opcode == O_XMIT)
1331 else if (cmd->opcode == O_RECV)
1333 else /* if (cmd->opcode == O_VIA) */
1335 if (cmdif->name[0] == '\0')
1337 inet_ntoa(cmdif->p.ip));
1339 printf(" %s %s", s, cmdif->name);
1344 if (F_LEN(cmd) == 1)
1345 printf(" ipid %u", cmd->arg1 );
1347 print_newports((ipfw_insn_u16 *)cmd, 0,
1352 if (F_LEN(cmd) == 1)
1353 printf(" ipttl %u", cmd->arg1 );
1355 print_newports((ipfw_insn_u16 *)cmd, 0,
1360 printf(" ipver %u", cmd->arg1 );
1363 case O_IPPRECEDENCE:
1364 printf(" ipprecedence %u", (cmd->arg1) >> 5 );
1368 if (F_LEN(cmd) == 1)
1369 printf(" iplen %u", cmd->arg1 );
1371 print_newports((ipfw_insn_u16 *)cmd, 0,
1376 print_flags("ipoptions", cmd, f_ipopts);
1380 print_flags("iptos", cmd, f_iptos);
1384 print_icmptypes((ipfw_insn_u32 *)cmd);
1388 printf(" established");
1392 if (F_LEN(cmd) == 1)
1393 printf(" tcpdatalen %u", cmd->arg1 );
1395 print_newports((ipfw_insn_u16 *)cmd, 0,
1400 print_flags("tcpflags", cmd, f_tcpflags);
1404 print_flags("tcpoptions", cmd, f_tcpopts);
1408 printf(" tcpwin %d", ntohs(cmd->arg1));
1412 printf(" tcpack %d", ntohl(cmd32->d[0]));
1416 printf(" tcpseq %d", ntohl(cmd32->d[0]));
1421 struct passwd *pwd = getpwuid(cmd32->d[0]);
1424 printf(" uid %s", pwd->pw_name);
1426 printf(" uid %u", cmd32->d[0]);
1432 struct group *grp = getgrgid(cmd32->d[0]);
1435 printf(" gid %s", grp->gr_name);
1437 printf(" gid %u", cmd32->d[0]);
1442 printf(" jail %d", cmd32->d[0]);
1446 printf(" verrevpath");
1450 printf(" versrcreach");
1454 printf(" antispoof");
1462 comment = (char *)(cmd + 1);
1466 printf(" keep-state");
1470 struct _s_x *p = limit_masks;
1471 ipfw_insn_limit *c = (ipfw_insn_limit *)cmd;
1472 uint8_t x = c->limit_mask;
1473 char const *comma = " ";
1476 for (; p->x != 0 ; p++)
1477 if ((x & p->x) == p->x) {
1479 printf("%s%s", comma, p->s);
1482 PRINT_UINT_ARG(" ", c->conn_limit);
1495 print_icmp6types((ipfw_insn_u32 *)cmd);
1499 print_ext6hdr( (ipfw_insn *) cmd );
1503 if (F_LEN(cmd) == 1)
1504 PRINT_UINT_ARG(" tagged ", cmd->arg1);
1506 print_newports((ipfw_insn_u16 *)cmd, 0,
1511 printf(" [opcode %d len %d]",
1512 cmd->opcode, cmd->len);
1515 if (cmd->len & F_OR) {
1518 } else if (or_block) {
1523 show_prerequisites(&flags, HAVE_IP, 0);
1525 printf(" // %s", comment);
1530 show_dyn_ipfw(ipfw_dyn_rule *d, int pcwidth, int bcwidth)
1532 struct protoent *pe;
1535 char buf[INET6_ADDRSTRLEN];
1537 if (!co.do_expired) {
1538 if (!d->expire && !(d->dyn_type == O_LIMIT_PARENT))
1541 bcopy(&d->rule, &rulenum, sizeof(rulenum));
1542 printf("%05d", rulenum);
1543 if (pcwidth>0 || bcwidth>0)
1544 printf(" %*llu %*llu (%ds)", pcwidth,
1545 align_uint64(&d->pcnt), bcwidth,
1546 align_uint64(&d->bcnt), d->expire);
1547 switch (d->dyn_type) {
1548 case O_LIMIT_PARENT:
1549 printf(" PARENT %d", d->count);
1554 case O_KEEP_STATE: /* bidir, no mask */
1559 if ((pe = getprotobynumber(d->id.proto)) != NULL)
1560 printf(" %s", pe->p_name);
1562 printf(" proto %u", d->id.proto);
1564 if (d->id.addr_type == 4) {
1565 a.s_addr = htonl(d->id.src_ip);
1566 printf(" %s %d", inet_ntoa(a), d->id.src_port);
1568 a.s_addr = htonl(d->id.dst_ip);
1569 printf(" <-> %s %d", inet_ntoa(a), d->id.dst_port);
1570 } else if (d->id.addr_type == 6) {
1571 printf(" %s %d", inet_ntop(AF_INET6, &d->id.src_ip6, buf,
1572 sizeof(buf)), d->id.src_port);
1573 printf(" <-> %s %d", inet_ntop(AF_INET6, &d->id.dst_ip6, buf,
1574 sizeof(buf)), d->id.dst_port);
1576 printf(" UNKNOWN <-> UNKNOWN\n");
1582 * This one handles all set-related commands
1583 * ipfw set { show | enable | disable }
1585 * ipfw set move X to Y
1586 * ipfw set move rule X to Y
1589 ipfw_sets_handler(int ac, char *av[])
1591 uint32_t set_disable, masks[2];
1594 uint8_t cmd, new_set;
1600 errx(EX_USAGE, "set needs command");
1601 if (_substrcmp(*av, "show") == 0) {
1605 nbytes = sizeof(struct ip_fw);
1606 data = safe_calloc(1, nbytes);
1607 if (do_cmd(IP_FW_GET, data, (uintptr_t)&nbytes) < 0)
1608 err(EX_OSERR, "getsockopt(IP_FW_GET)");
1609 bcopy(&((struct ip_fw *)data)->next_rule,
1610 &set_disable, sizeof(set_disable));
1612 for (i = 0, msg = "disable" ; i < RESVD_SET; i++)
1613 if ((set_disable & (1<<i))) {
1614 printf("%s %d", msg, i);
1617 msg = (set_disable) ? " enable" : "enable";
1618 for (i = 0; i < RESVD_SET; i++)
1619 if (!(set_disable & (1<<i))) {
1620 printf("%s %d", msg, i);
1624 } else if (_substrcmp(*av, "swap") == 0) {
1627 errx(EX_USAGE, "set swap needs 2 set numbers\n");
1628 rulenum = atoi(av[0]);
1629 new_set = atoi(av[1]);
1630 if (!isdigit(*(av[0])) || rulenum > RESVD_SET)
1631 errx(EX_DATAERR, "invalid set number %s\n", av[0]);
1632 if (!isdigit(*(av[1])) || new_set > RESVD_SET)
1633 errx(EX_DATAERR, "invalid set number %s\n", av[1]);
1634 masks[0] = (4 << 24) | (new_set << 16) | (rulenum);
1635 i = do_cmd(IP_FW_DEL, masks, sizeof(uint32_t));
1636 } else if (_substrcmp(*av, "move") == 0) {
1638 if (ac && _substrcmp(*av, "rule") == 0) {
1643 if (ac != 3 || _substrcmp(av[1], "to") != 0)
1644 errx(EX_USAGE, "syntax: set move [rule] X to Y\n");
1645 rulenum = atoi(av[0]);
1646 new_set = atoi(av[2]);
1647 if (!isdigit(*(av[0])) || (cmd == 3 && rulenum > RESVD_SET) ||
1648 (cmd == 2 && rulenum == IPFW_DEFAULT_RULE) )
1649 errx(EX_DATAERR, "invalid source number %s\n", av[0]);
1650 if (!isdigit(*(av[2])) || new_set > RESVD_SET)
1651 errx(EX_DATAERR, "invalid dest. set %s\n", av[1]);
1652 masks[0] = (cmd << 24) | (new_set << 16) | (rulenum);
1653 i = do_cmd(IP_FW_DEL, masks, sizeof(uint32_t));
1654 } else if (_substrcmp(*av, "disable") == 0 ||
1655 _substrcmp(*av, "enable") == 0 ) {
1656 int which = _substrcmp(*av, "enable") == 0 ? 1 : 0;
1659 masks[0] = masks[1] = 0;
1662 if (isdigit(**av)) {
1664 if (i < 0 || i > RESVD_SET)
1666 "invalid set number %d\n", i);
1667 masks[which] |= (1<<i);
1668 } else if (_substrcmp(*av, "disable") == 0)
1670 else if (_substrcmp(*av, "enable") == 0)
1674 "invalid set command %s\n", *av);
1677 if ( (masks[0] & masks[1]) != 0 )
1679 "cannot enable and disable the same set\n");
1681 i = do_cmd(IP_FW_DEL, masks, sizeof(masks));
1683 warn("set enable/disable: setsockopt(IP_FW_DEL)");
1685 errx(EX_USAGE, "invalid set command %s\n", *av);
1689 ipfw_sysctl_handler(int ac, char *av[], int which)
1695 warnx("missing keyword to enable/disable\n");
1696 } else if (_substrcmp(*av, "firewall") == 0) {
1697 sysctlbyname("net.inet.ip.fw.enable", NULL, 0,
1698 &which, sizeof(which));
1699 } else if (_substrcmp(*av, "one_pass") == 0) {
1700 sysctlbyname("net.inet.ip.fw.one_pass", NULL, 0,
1701 &which, sizeof(which));
1702 } else if (_substrcmp(*av, "debug") == 0) {
1703 sysctlbyname("net.inet.ip.fw.debug", NULL, 0,
1704 &which, sizeof(which));
1705 } else if (_substrcmp(*av, "verbose") == 0) {
1706 sysctlbyname("net.inet.ip.fw.verbose", NULL, 0,
1707 &which, sizeof(which));
1708 } else if (_substrcmp(*av, "dyn_keepalive") == 0) {
1709 sysctlbyname("net.inet.ip.fw.dyn_keepalive", NULL, 0,
1710 &which, sizeof(which));
1711 } else if (_substrcmp(*av, "altq") == 0) {
1712 altq_set_enabled(which);
1714 warnx("unrecognize enable/disable keyword: %s\n", *av);
1719 ipfw_list(int ac, char *av[], int show_counters)
1722 ipfw_dyn_rule *dynrules, *d;
1724 #define NEXT(r) ((struct ip_fw *)((char *)r + RULESIZE(r)))
1727 int bcwidth, n, nbytes, nstat, ndyn, pcwidth, width;
1728 int exitval = EX_OK;
1736 const int ocmd = co.do_pipe ? IP_DUMMYNET_GET : IP_FW_GET;
1737 int nalloc = 1024; /* start somewhere... */
1742 fprintf(stderr, "Testing only, list disabled\n");
1749 /* get rules or pipes from kernel, resizing array as necessary */
1752 while (nbytes >= nalloc) {
1753 nalloc = nalloc * 2 + 200;
1755 data = safe_realloc(data, nbytes);
1756 if (do_cmd(ocmd, data, (uintptr_t)&nbytes) < 0)
1757 err(EX_OSERR, "getsockopt(IP_%s_GET)",
1758 co.do_pipe ? "DUMMYNET" : "FW");
1762 ipfw_list_pipes(data, nbytes, ac, av);
1767 * Count static rules. They have variable size so we
1768 * need to scan the list to count them.
1770 for (nstat = 1, r = data, lim = (char *)data + nbytes;
1771 r->rulenum < IPFW_DEFAULT_RULE && (char *)r < lim;
1772 ++nstat, r = NEXT(r) )
1776 * Count dynamic rules. This is easier as they have
1780 dynrules = (ipfw_dyn_rule *)r ;
1781 n = (char *)r - (char *)data;
1782 ndyn = (nbytes - n) / sizeof *dynrules;
1784 /* if showing stats, figure out column widths ahead of time */
1785 bcwidth = pcwidth = 0;
1786 if (show_counters) {
1787 for (n = 0, r = data; n < nstat; n++, r = NEXT(r)) {
1788 /* skip rules from another set */
1789 if (co.use_set && r->set != co.use_set - 1)
1792 /* packet counter */
1793 width = snprintf(NULL, 0, "%llu",
1794 align_uint64(&r->pcnt));
1795 if (width > pcwidth)
1799 width = snprintf(NULL, 0, "%llu",
1800 align_uint64(&r->bcnt));
1801 if (width > bcwidth)
1805 if (co.do_dynamic && ndyn) {
1806 for (n = 0, d = dynrules; n < ndyn; n++, d++) {
1808 /* skip rules from another set */
1809 bcopy((char *)&d->rule + sizeof(uint16_t),
1810 &set, sizeof(uint8_t));
1811 if (set != co.use_set - 1)
1814 width = snprintf(NULL, 0, "%llu",
1815 align_uint64(&d->pcnt));
1816 if (width > pcwidth)
1819 width = snprintf(NULL, 0, "%llu",
1820 align_uint64(&d->bcnt));
1821 if (width > bcwidth)
1825 /* if no rule numbers were specified, list all rules */
1827 for (n = 0, r = data; n < nstat; n++, r = NEXT(r)) {
1828 if (co.use_set && r->set != co.use_set - 1)
1830 show_ipfw(r, pcwidth, bcwidth);
1833 if (co.do_dynamic && ndyn) {
1834 printf("## Dynamic rules (%d):\n", ndyn);
1835 for (n = 0, d = dynrules; n < ndyn; n++, d++) {
1837 bcopy((char *)&d->rule + sizeof(uint16_t),
1838 &set, sizeof(uint8_t));
1839 if (set != co.use_set - 1)
1842 show_dyn_ipfw(d, pcwidth, bcwidth);
1848 /* display specific rules requested on command line */
1850 for (lac = ac, lav = av; lac != 0; lac--) {
1851 /* convert command line rule # */
1852 last = rnum = strtoul(*lav++, &endptr, 10);
1854 last = strtoul(endptr+1, &endptr, 10);
1857 warnx("invalid rule number: %s", *(lav - 1));
1860 for (n = seen = 0, r = data; n < nstat; n++, r = NEXT(r) ) {
1861 if (r->rulenum > last)
1863 if (co.use_set && r->set != co.use_set - 1)
1865 if (r->rulenum >= rnum && r->rulenum <= last) {
1866 show_ipfw(r, pcwidth, bcwidth);
1871 /* give precedence to other error(s) */
1872 if (exitval == EX_OK)
1873 exitval = EX_UNAVAILABLE;
1874 warnx("rule %lu does not exist", rnum);
1878 if (co.do_dynamic && ndyn) {
1879 printf("## Dynamic rules:\n");
1880 for (lac = ac, lav = av; lac != 0; lac--) {
1881 last = rnum = strtoul(*lav++, &endptr, 10);
1883 last = strtoul(endptr+1, &endptr, 10);
1885 /* already warned */
1887 for (n = 0, d = dynrules; n < ndyn; n++, d++) {
1890 bcopy(&d->rule, &rulenum, sizeof(rulenum));
1894 bcopy((char *)&d->rule + sizeof(uint16_t),
1895 &set, sizeof(uint8_t));
1896 if (set != co.use_set - 1)
1899 if (r->rulenum >= rnum && r->rulenum <= last)
1900 show_dyn_ipfw(d, pcwidth, bcwidth);
1910 if (exitval != EX_OK)
1916 lookup_host (char *host, struct in_addr *ipaddr)
1920 if (!inet_aton(host, ipaddr)) {
1921 if ((he = gethostbyname(host)) == NULL)
1923 *ipaddr = *(struct in_addr *)he->h_addr_list[0];
1929 * fills the addr and mask fields in the instruction as appropriate from av.
1930 * Update length as appropriate.
1931 * The following formats are allowed:
1932 * me returns O_IP_*_ME
1933 * 1.2.3.4 single IP address
1934 * 1.2.3.4:5.6.7.8 address:mask
1935 * 1.2.3.4/24 address/mask
1936 * 1.2.3.4/26{1,6,5,4,23} set of addresses in a subnet
1937 * We can have multiple comma-separated address/mask entries.
1940 fill_ip(ipfw_insn_ip *cmd, char *av)
1943 uint32_t *d = ((ipfw_insn_u32 *)cmd)->d;
1945 cmd->o.len &= ~F_LEN_MASK; /* zero len */
1947 if (_substrcmp(av, "any") == 0)
1950 if (_substrcmp(av, "me") == 0) {
1951 cmd->o.len |= F_INSN_SIZE(ipfw_insn);
1955 if (strncmp(av, "table(", 6) == 0) {
1956 char *p = strchr(av + 6, ',');
1960 cmd->o.opcode = O_IP_DST_LOOKUP;
1961 cmd->o.arg1 = strtoul(av + 6, NULL, 0);
1963 cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32);
1964 d[0] = strtoul(p, NULL, 0);
1966 cmd->o.len |= F_INSN_SIZE(ipfw_insn);
1972 * After the address we can have '/' or ':' indicating a mask,
1973 * ',' indicating another address follows, '{' indicating a
1974 * set of addresses of unspecified size.
1976 char *t = NULL, *p = strpbrk(av, "/:,{");
1983 if ((t = strpbrk(p, ",{")) != NULL) {
1990 if (lookup_host(av, (struct in_addr *)&d[0]) != 0)
1991 errx(EX_NOHOST, "hostname ``%s'' unknown", av);
1994 if (!inet_aton(p, (struct in_addr *)&d[1]))
1995 errx(EX_DATAERR, "bad netmask ``%s''", p);
2000 d[1] = htonl(0); /* mask */
2001 else if (masklen > 32)
2002 errx(EX_DATAERR, "bad width ``%s''", p);
2004 d[1] = htonl(~0 << (32 - masklen));
2006 case '{': /* no mask, assume /24 and put back the '{' */
2007 d[1] = htonl(~0 << (32 - 24));
2011 case ',': /* single address plus continuation */
2014 case 0: /* initialization value */
2016 d[1] = htonl(~0); /* force /32 */
2019 d[0] &= d[1]; /* mask base address with mask */
2022 /* find next separator */
2024 p = strpbrk(p, ",{");
2025 if (p && *p == '{') {
2027 * We have a set of addresses. They are stored as follows:
2028 * arg1 is the set size (powers of 2, 2..256)
2029 * addr is the base address IN HOST FORMAT
2030 * mask.. is an array of arg1 bits (rounded up to
2031 * the next multiple of 32) with bits set
2032 * for each host in the map.
2034 uint32_t *map = (uint32_t *)&cmd->mask;
2036 int i = contigmask((uint8_t *)&(d[1]), 32);
2039 errx(EX_DATAERR, "address set cannot be in a list");
2040 if (i < 24 || i > 31)
2041 errx(EX_DATAERR, "invalid set with mask %d\n", i);
2042 cmd->o.arg1 = 1<<(32-i); /* map length */
2043 d[0] = ntohl(d[0]); /* base addr in host format */
2044 cmd->o.opcode = O_IP_DST_SET; /* default */
2045 cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32) + (cmd->o.arg1+31)/32;
2046 for (i = 0; i < (cmd->o.arg1+31)/32 ; i++)
2047 map[i] = 0; /* clear map */
2051 high = low + cmd->o.arg1 - 1;
2053 * Here, i stores the previous value when we specify a range
2054 * of addresses within a mask, e.g. 45-63. i = -1 means we
2055 * have no previous value.
2057 i = -1; /* previous value in a range */
2058 while (isdigit(*av)) {
2060 int a = strtol(av, &s, 0);
2062 if (s == av) { /* no parameter */
2064 errx(EX_DATAERR, "set not closed\n");
2066 errx(EX_DATAERR, "incomplete range %d-", i);
2069 if (a < low || a > high)
2070 errx(EX_DATAERR, "addr %d out of range [%d-%d]\n",
2073 if (i == -1) /* no previous in range */
2075 else { /* check that range is valid */
2077 errx(EX_DATAERR, "invalid range %d-%d",
2080 errx(EX_DATAERR, "double '-' in range");
2083 map[i/32] |= 1<<(i & 31);
2094 if (av) /* then *av must be a ',' */
2097 /* Check this entry */
2098 if (d[1] == 0) { /* "any", specified as x.x.x.x/0 */
2100 * 'any' turns the entire list into a NOP.
2101 * 'not any' never matches, so it is removed from the
2102 * list unless it is the only item, in which case we
2105 if (cmd->o.len & F_NOT) { /* "not any" never matches */
2106 if (av == NULL && len == 0) /* only this entry */
2107 errx(EX_DATAERR, "not any never matches");
2109 /* else do nothing and skip this entry */
2112 /* A single IP can be stored in an optimized format */
2113 if (d[1] == ~0 && av == NULL && len == 0) {
2114 cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32);
2117 len += 2; /* two words... */
2120 if (len + 1 > F_LEN_MASK)
2121 errx(EX_DATAERR, "address list too long");
2122 cmd->o.len |= len+1;
2126 /* n2mask sets n bits of the mask */
2128 n2mask(struct in6_addr *mask, int n)
2130 static int minimask[9] =
2131 { 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff };
2134 memset(mask, 0, sizeof(struct in6_addr));
2135 p = (u_char *) mask;
2136 for (; n > 0; p++, n -= 8) {
2147 * helper function to process a set of flags and set bits in the
2148 * appropriate masks.
2151 fill_flags(ipfw_insn *cmd, enum ipfw_opcodes opcode,
2152 struct _s_x *flags, char *p)
2154 uint8_t set=0, clear=0;
2157 char *q; /* points to the separator */
2159 uint8_t *which; /* mask we are working on */
2169 val = match_token(flags, p);
2171 errx(EX_DATAERR, "invalid flag %s", p);
2172 *which |= (uint8_t)val;
2175 cmd->opcode = opcode;
2176 cmd->len = (cmd->len & (F_NOT | F_OR)) | 1;
2177 cmd->arg1 = (set & 0xff) | ( (clear & 0xff) << 8);
2182 ipfw_delete(int ac, char *av[])
2186 int exitval = EX_OK;
2191 NEED1("missing rule specification");
2192 if (ac > 0 && _substrcmp(*av, "set") == 0) {
2193 /* Do not allow using the following syntax:
2194 * ipfw set N delete set M
2197 errx(EX_DATAERR, "invalid syntax");
2198 do_set = 1; /* delete set */
2203 while (ac && isdigit(**av)) {
2204 i = atoi(*av); av++; ac--;
2206 exitval = do_cmd(IP_FW_NAT_DEL, &i, sizeof i);
2208 exitval = EX_UNAVAILABLE;
2209 warn("rule %u not available", i);
2211 } else if (co.do_pipe) {
2212 exitval = ipfw_delete_pipe(co.do_pipe, i);
2215 rulenum = (i & 0xffff) | (5 << 24) |
2216 ((co.use_set - 1) << 16);
2218 rulenum = (i & 0xffff) | (do_set << 24);
2219 i = do_cmd(IP_FW_DEL, &rulenum, sizeof rulenum);
2221 exitval = EX_UNAVAILABLE;
2222 warn("rule %u: setsockopt(IP_FW_DEL)",
2227 if (exitval != EX_OK)
2233 * fill the interface structure. We do not check the name as we can
2234 * create interfaces dynamically, so checking them at insert time
2235 * makes relatively little sense.
2236 * Interface names containing '*', '?', or '[' are assumed to be shell
2237 * patterns which match interfaces.
2240 fill_iface(ipfw_insn_if *cmd, char *arg)
2242 cmd->name[0] = '\0';
2243 cmd->o.len |= F_INSN_SIZE(ipfw_insn_if);
2245 /* Parse the interface or address */
2246 if (strcmp(arg, "any") == 0)
2247 cmd->o.len = 0; /* effectively ignore this command */
2248 else if (!isdigit(*arg)) {
2249 strlcpy(cmd->name, arg, sizeof(cmd->name));
2250 cmd->p.glob = strpbrk(arg, "*?[") != NULL ? 1 : 0;
2251 } else if (!inet_aton(arg, &cmd->p.ip))
2252 errx(EX_DATAERR, "bad ip address ``%s''", arg);
2256 get_mac_addr_mask(const char *p, uint8_t *addr, uint8_t *mask)
2259 char *ap, *ptr, *optr;
2260 struct ether_addr *mac;
2261 const char *macset = "0123456789abcdefABCDEF:";
2263 if (strcmp(p, "any") == 0) {
2264 for (i = 0; i < ETHER_ADDR_LEN; i++)
2265 addr[i] = mask[i] = 0;
2269 optr = ptr = strdup(p);
2270 if ((ap = strsep(&ptr, "&/")) != NULL && *ap != 0) {
2272 if (strspn(ap, macset) != l || (mac = ether_aton(ap)) == NULL)
2273 errx(EX_DATAERR, "Incorrect MAC address");
2274 bcopy(mac, addr, ETHER_ADDR_LEN);
2276 errx(EX_DATAERR, "Incorrect MAC address");
2278 if (ptr != NULL) { /* we have mask? */
2279 if (p[ptr - optr - 1] == '/') { /* mask len */
2280 l = strtol(ptr, &ap, 10);
2281 if (*ap != 0 || l > ETHER_ADDR_LEN * 8 || l < 0)
2282 errx(EX_DATAERR, "Incorrect mask length");
2283 for (i = 0; l > 0 && i < ETHER_ADDR_LEN; l -= 8, i++)
2284 mask[i] = (l >= 8) ? 0xff: (~0) << (8 - l);
2287 if (strspn(ptr, macset) != l ||
2288 (mac = ether_aton(ptr)) == NULL)
2289 errx(EX_DATAERR, "Incorrect mask");
2290 bcopy(mac, mask, ETHER_ADDR_LEN);
2292 } else { /* default mask: ff:ff:ff:ff:ff:ff */
2293 for (i = 0; i < ETHER_ADDR_LEN; i++)
2296 for (i = 0; i < ETHER_ADDR_LEN; i++)
2303 * helper function, updates the pointer to cmd with the length
2304 * of the current command, and also cleans up the first word of
2305 * the new command in case it has been clobbered before.
2308 next_cmd(ipfw_insn *cmd)
2311 bzero(cmd, sizeof(*cmd));
2316 * Takes arguments and copies them into a comment
2319 fill_comment(ipfw_insn *cmd, int ac, char **av)
2322 char *p = (char *)(cmd + 1);
2324 cmd->opcode = O_NOP;
2325 cmd->len = (cmd->len & (F_NOT | F_OR));
2327 /* Compute length of comment string. */
2328 for (i = 0, l = 0; i < ac; i++)
2329 l += strlen(av[i]) + 1;
2334 "comment too long (max 80 chars)");
2336 cmd->len = (cmd->len & (F_NOT | F_OR)) | l;
2337 for (i = 0; i < ac; i++) {
2346 * A function to fill simple commands of size 1.
2347 * Existing flags are preserved.
2350 fill_cmd(ipfw_insn *cmd, enum ipfw_opcodes opcode, int flags, uint16_t arg)
2352 cmd->opcode = opcode;
2353 cmd->len = ((cmd->len | flags) & (F_NOT | F_OR)) | 1;
2358 * Fetch and add the MAC address and type, with masks. This generates one or
2359 * two microinstructions, and returns the pointer to the last one.
2362 add_mac(ipfw_insn *cmd, int ac, char *av[])
2367 errx(EX_DATAERR, "MAC dst src");
2369 cmd->opcode = O_MACADDR2;
2370 cmd->len = (cmd->len & (F_NOT | F_OR)) | F_INSN_SIZE(ipfw_insn_mac);
2372 mac = (ipfw_insn_mac *)cmd;
2373 get_mac_addr_mask(av[0], mac->addr, mac->mask); /* dst */
2374 get_mac_addr_mask(av[1], &(mac->addr[ETHER_ADDR_LEN]),
2375 &(mac->mask[ETHER_ADDR_LEN])); /* src */
2380 add_mactype(ipfw_insn *cmd, int ac, char *av)
2383 errx(EX_DATAERR, "missing MAC type");
2384 if (strcmp(av, "any") != 0) { /* we have a non-null type */
2385 fill_newports((ipfw_insn_u16 *)cmd, av, IPPROTO_ETHERTYPE);
2386 cmd->opcode = O_MAC_TYPE;
2393 add_proto0(ipfw_insn *cmd, char *av, u_char *protop)
2395 struct protoent *pe;
2399 proto = strtol(av, &ep, 10);
2400 if (*ep != '\0' || proto <= 0) {
2401 if ((pe = getprotobyname(av)) == NULL)
2403 proto = pe->p_proto;
2406 fill_cmd(cmd, O_PROTO, 0, proto);
2412 add_proto(ipfw_insn *cmd, char *av, u_char *protop)
2414 u_char proto = IPPROTO_IP;
2416 if (_substrcmp(av, "all") == 0 || strcmp(av, "ip") == 0)
2417 ; /* do not set O_IP4 nor O_IP6 */
2418 else if (strcmp(av, "ip4") == 0)
2419 /* explicit "just IPv4" rule */
2420 fill_cmd(cmd, O_IP4, 0, 0);
2421 else if (strcmp(av, "ip6") == 0) {
2422 /* explicit "just IPv6" rule */
2423 proto = IPPROTO_IPV6;
2424 fill_cmd(cmd, O_IP6, 0, 0);
2426 return add_proto0(cmd, av, protop);
2433 add_proto_compat(ipfw_insn *cmd, char *av, u_char *protop)
2435 u_char proto = IPPROTO_IP;
2437 if (_substrcmp(av, "all") == 0 || strcmp(av, "ip") == 0)
2438 ; /* do not set O_IP4 nor O_IP6 */
2439 else if (strcmp(av, "ipv4") == 0 || strcmp(av, "ip4") == 0)
2440 /* explicit "just IPv4" rule */
2441 fill_cmd(cmd, O_IP4, 0, 0);
2442 else if (strcmp(av, "ipv6") == 0 || strcmp(av, "ip6") == 0) {
2443 /* explicit "just IPv6" rule */
2444 proto = IPPROTO_IPV6;
2445 fill_cmd(cmd, O_IP6, 0, 0);
2447 return add_proto0(cmd, av, protop);
2454 add_srcip(ipfw_insn *cmd, char *av)
2456 fill_ip((ipfw_insn_ip *)cmd, av);
2457 if (cmd->opcode == O_IP_DST_SET) /* set */
2458 cmd->opcode = O_IP_SRC_SET;
2459 else if (cmd->opcode == O_IP_DST_LOOKUP) /* table */
2460 cmd->opcode = O_IP_SRC_LOOKUP;
2461 else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */
2462 cmd->opcode = O_IP_SRC_ME;
2463 else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */
2464 cmd->opcode = O_IP_SRC;
2465 else /* addr/mask */
2466 cmd->opcode = O_IP_SRC_MASK;
2471 add_dstip(ipfw_insn *cmd, char *av)
2473 fill_ip((ipfw_insn_ip *)cmd, av);
2474 if (cmd->opcode == O_IP_DST_SET) /* set */
2476 else if (cmd->opcode == O_IP_DST_LOOKUP) /* table */
2478 else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */
2479 cmd->opcode = O_IP_DST_ME;
2480 else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */
2481 cmd->opcode = O_IP_DST;
2482 else /* addr/mask */
2483 cmd->opcode = O_IP_DST_MASK;
2488 add_ports(ipfw_insn *cmd, char *av, u_char proto, int opcode)
2490 if (_substrcmp(av, "any") == 0) {
2492 } else if (fill_newports((ipfw_insn_u16 *)cmd, av, proto)) {
2493 /* XXX todo: check that we have a protocol with ports */
2494 cmd->opcode = opcode;
2501 add_src(ipfw_insn *cmd, char *av, u_char proto)
2505 ipfw_insn *ret = NULL;
2507 if ((host = strdup(av)) == NULL)
2509 if ((ch = strrchr(host, '/')) != NULL)
2512 if (proto == IPPROTO_IPV6 || strcmp(av, "me6") == 0 ||
2513 inet_pton(AF_INET6, host, &a))
2514 ret = add_srcip6(cmd, av);
2515 /* XXX: should check for IPv4, not !IPv6 */
2516 if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 ||
2517 !inet_pton(AF_INET6, host, &a)))
2518 ret = add_srcip(cmd, av);
2519 if (ret == NULL && strcmp(av, "any") != 0)
2527 add_dst(ipfw_insn *cmd, char *av, u_char proto)
2531 ipfw_insn *ret = NULL;
2533 if ((host = strdup(av)) == NULL)
2535 if ((ch = strrchr(host, '/')) != NULL)
2538 if (proto == IPPROTO_IPV6 || strcmp(av, "me6") == 0 ||
2539 inet_pton(AF_INET6, host, &a))
2540 ret = add_dstip6(cmd, av);
2541 /* XXX: should check for IPv4, not !IPv6 */
2542 if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 ||
2543 !inet_pton(AF_INET6, host, &a)))
2544 ret = add_dstip(cmd, av);
2545 if (ret == NULL && strcmp(av, "any") != 0)
2553 * Parse arguments and assemble the microinstructions which make up a rule.
2554 * Rules are added into the 'rulebuf' and then copied in the correct order
2555 * into the actual rule.
2557 * The syntax for a rule starts with the action, followed by
2558 * optional action parameters, and the various match patterns.
2559 * In the assembled microcode, the first opcode must be an O_PROBE_STATE
2560 * (generated if the rule includes a keep-state option), then the
2561 * various match patterns, log/altq actions, and the actual action.
2565 ipfw_add(int ac, char *av[])
2568 * rules are added into the 'rulebuf' and then copied in
2569 * the correct order into the actual rule.
2570 * Some things that need to go out of order (prob, action etc.)
2573 static uint32_t rulebuf[255], actbuf[255], cmdbuf[255];
2575 ipfw_insn *src, *dst, *cmd, *action, *prev=NULL;
2576 ipfw_insn *first_cmd; /* first match pattern */
2581 * various flags used to record that we entered some fields.
2583 ipfw_insn *have_state = NULL; /* check-state or keep-state */
2584 ipfw_insn *have_log = NULL, *have_altq = NULL, *have_tag = NULL;
2589 int open_par = 0; /* open parenthesis ( */
2591 /* proto is here because it is used to fetch ports */
2592 u_char proto = IPPROTO_IP; /* default protocol */
2594 double match_prob = 1; /* match probability, default is always match */
2596 bzero(actbuf, sizeof(actbuf)); /* actions go here */
2597 bzero(cmdbuf, sizeof(cmdbuf));
2598 bzero(rulebuf, sizeof(rulebuf));
2600 rule = (struct ip_fw *)rulebuf;
2601 cmd = (ipfw_insn *)cmdbuf;
2602 action = (ipfw_insn *)actbuf;
2606 /* [rule N] -- Rule number optional */
2607 if (ac && isdigit(**av)) {
2608 rule->rulenum = atoi(*av);
2613 /* [set N] -- set number (0..RESVD_SET), optional */
2614 if (ac > 1 && _substrcmp(*av, "set") == 0) {
2615 int set = strtoul(av[1], NULL, 10);
2616 if (set < 0 || set > RESVD_SET)
2617 errx(EX_DATAERR, "illegal set %s", av[1]);
2622 /* [prob D] -- match probability, optional */
2623 if (ac > 1 && _substrcmp(*av, "prob") == 0) {
2624 match_prob = strtod(av[1], NULL);
2626 if (match_prob <= 0 || match_prob > 1)
2627 errx(EX_DATAERR, "illegal match prob. %s", av[1]);
2631 /* action -- mandatory */
2632 NEED1("missing action");
2633 i = match_token(rule_actions, *av);
2635 action->len = 1; /* default */
2637 case TOK_CHECKSTATE:
2638 have_state = action;
2639 action->opcode = O_CHECK_STATE;
2643 action->opcode = O_ACCEPT;
2647 action->opcode = O_DENY;
2652 action->opcode = O_REJECT;
2653 action->arg1 = ICMP_UNREACH_HOST;
2657 action->opcode = O_REJECT;
2658 action->arg1 = ICMP_REJECT_RST;
2662 action->opcode = O_UNREACH6;
2663 action->arg1 = ICMP6_UNREACH_RST;
2667 action->opcode = O_REJECT;
2668 NEED1("missing reject code");
2669 fill_reject_code(&action->arg1, *av);
2674 action->opcode = O_UNREACH6;
2675 NEED1("missing unreach code");
2676 fill_unreach6_code(&action->arg1, *av);
2681 action->opcode = O_COUNT;
2685 action->opcode = O_NAT;
2686 action->len = F_INSN_SIZE(ipfw_insn_nat);
2690 action->opcode = O_QUEUE;
2693 action->opcode = O_PIPE;
2696 action->opcode = O_SKIPTO;
2699 action->opcode = O_NETGRAPH;
2702 action->opcode = O_NGTEE;
2705 action->opcode = O_DIVERT;
2708 action->opcode = O_TEE;
2711 errx(EX_USAGE, "missing argument for %s", *(av - 1));
2712 if (isdigit(**av)) {
2713 action->arg1 = strtoul(*av, NULL, 10);
2714 if (action->arg1 <= 0 || action->arg1 >= IP_FW_TABLEARG)
2715 errx(EX_DATAERR, "illegal argument for %s",
2717 } else if (_substrcmp(*av, "tablearg") == 0) {
2718 action->arg1 = IP_FW_TABLEARG;
2719 } else if (i == TOK_DIVERT || i == TOK_TEE) {
2722 s = getservbyname(av[0], "divert");
2724 action->arg1 = ntohs(s->s_port);
2726 errx(EX_DATAERR, "illegal divert/tee port");
2728 errx(EX_DATAERR, "illegal argument for %s", *(av - 1));
2733 ipfw_insn_sa *p = (ipfw_insn_sa *)action;
2736 NEED1("missing forward address[:port]");
2738 action->opcode = O_FORWARD_IP;
2739 action->len = F_INSN_SIZE(ipfw_insn_sa);
2742 * In the kernel we assume AF_INET and use only
2743 * sin_port and sin_addr.
2745 p->sa.sin_family = AF_INET;
2748 * locate the address-port separator (':' or ',')
2750 s = strchr(*av, ':');
2752 s = strchr(*av, ',');
2755 i = strtoport(s, &end, 0 /* base */, 0 /* proto */);
2758 "illegal forwarding port ``%s''", s);
2759 p->sa.sin_port = (u_short)i;
2761 if (_substrcmp(*av, "tablearg") == 0)
2762 p->sa.sin_addr.s_addr = INADDR_ANY;
2764 lookup_host(*av, &(p->sa.sin_addr));
2769 /* pretend it is a 'count' rule followed by the comment */
2770 action->opcode = O_COUNT;
2771 ac++; av--; /* go back... */
2777 size_t intsize = sizeof(int);
2779 action->opcode = O_SETFIB;
2780 NEED1("missing fib number");
2781 action->arg1 = strtoul(*av, NULL, 10);
2782 if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1)
2783 errx(EX_DATAERR, "fibs not suported.\n");
2784 if (action->arg1 >= numfibs) /* Temporary */
2785 errx(EX_DATAERR, "fib too large.\n");
2791 action->opcode = O_REASS;
2795 errx(EX_DATAERR, "invalid action %s\n", av[-1]);
2797 action = next_cmd(action);
2800 * [altq queuename] -- altq tag, optional
2801 * [log [logamount N]] -- log, optional
2803 * If they exist, it go first in the cmdbuf, but then it is
2804 * skipped in the copy section to the end of the buffer.
2806 while (ac != 0 && (i = match_token(rule_action_params, *av)) != -1) {
2811 ipfw_insn_log *c = (ipfw_insn_log *)cmd;
2816 "log cannot be specified more than once");
2817 have_log = (ipfw_insn *)c;
2818 cmd->len = F_INSN_SIZE(ipfw_insn_log);
2819 cmd->opcode = O_LOG;
2820 if (ac && _substrcmp(*av, "logamount") == 0) {
2822 NEED1("logamount requires argument");
2826 "logamount must be positive");
2830 len = sizeof(c->max_log);
2831 if (sysctlbyname("net.inet.ip.fw.verbose_limit",
2832 &c->max_log, &len, NULL, 0) == -1)
2833 errx(1, "sysctlbyname(\"%s\")",
2834 "net.inet.ip.fw.verbose_limit");
2841 ipfw_insn_altq *a = (ipfw_insn_altq *)cmd;
2843 NEED1("missing altq queue name");
2846 "altq cannot be specified more than once");
2847 have_altq = (ipfw_insn *)a;
2848 cmd->len = F_INSN_SIZE(ipfw_insn_altq);
2849 cmd->opcode = O_ALTQ;
2850 a->qid = altq_name_to_qid(*av);
2860 errx(EX_USAGE, "tag and untag cannot be "
2861 "specified more than once");
2862 GET_UINT_ARG(tag, 1, IPFW_DEFAULT_RULE - 1, i,
2863 rule_action_params);
2865 fill_cmd(cmd, O_TAG, (i == TOK_TAG) ? 0: F_NOT, tag);
2873 cmd = next_cmd(cmd);
2876 if (have_state) /* must be a check-state, we are done */
2879 #define OR_START(target) \
2880 if (ac && (*av[0] == '(' || *av[0] == '{')) { \
2882 errx(EX_USAGE, "nested \"(\" not allowed\n"); \
2885 if ( (av[0])[1] == '\0') { \
2896 strcmp(*av, ")") == 0 || \
2897 strcmp(*av, "}") == 0)) { \
2902 errx(EX_USAGE, "missing \")\"\n"); \
2906 if (ac && _substrcmp(*av, "not") == 0) { \
2907 if (cmd->len & F_NOT) \
2908 errx(EX_USAGE, "double \"not\" not allowed\n"); \
2909 cmd->len |= F_NOT; \
2913 #define OR_BLOCK(target) \
2914 if (ac && _substrcmp(*av, "or") == 0) { \
2915 if (prev == NULL || open_par == 0) \
2916 errx(EX_DATAERR, "invalid OR block"); \
2917 prev->len |= F_OR; \
2927 * MAC addresses, optional.
2928 * If we have this, we skip the part "proto from src to dst"
2929 * and jump straight to the option parsing.
2932 NEED1("missing protocol");
2933 if (_substrcmp(*av, "MAC") == 0 ||
2934 _substrcmp(*av, "mac") == 0) {
2935 ac--; av++; /* the "MAC" keyword */
2936 add_mac(cmd, ac, av); /* exits in case of errors */
2937 cmd = next_cmd(cmd);
2938 ac -= 2; av += 2; /* dst-mac and src-mac */
2940 NEED1("missing mac type");
2941 if (add_mactype(cmd, ac, av[0]))
2942 cmd = next_cmd(cmd);
2943 ac--; av++; /* any or mac-type */
2949 * protocol, mandatory
2951 OR_START(get_proto);
2953 NEED1("missing protocol");
2954 if (add_proto_compat(cmd, *av, &proto)) {
2956 if (F_LEN(cmd) != 0) {
2958 cmd = next_cmd(cmd);
2960 } else if (first_cmd != cmd) {
2961 errx(EX_DATAERR, "invalid protocol ``%s''", *av);
2964 OR_BLOCK(get_proto);
2969 if (!ac || _substrcmp(*av, "from") != 0)
2970 errx(EX_USAGE, "missing ``from''");
2974 * source IP, mandatory
2976 OR_START(source_ip);
2977 NOT_BLOCK; /* optional "not" */
2978 NEED1("missing source address");
2979 if (add_src(cmd, *av, proto)) {
2981 if (F_LEN(cmd) != 0) { /* ! any */
2983 cmd = next_cmd(cmd);
2986 errx(EX_USAGE, "bad source address %s", *av);
2987 OR_BLOCK(source_ip);
2990 * source ports, optional
2992 NOT_BLOCK; /* optional "not" */
2994 if (_substrcmp(*av, "any") == 0 ||
2995 add_ports(cmd, *av, proto, O_IP_SRCPORT)) {
2997 if (F_LEN(cmd) != 0)
2998 cmd = next_cmd(cmd);
3005 if (!ac || _substrcmp(*av, "to") != 0)
3006 errx(EX_USAGE, "missing ``to''");
3010 * destination, mandatory
3013 NOT_BLOCK; /* optional "not" */
3014 NEED1("missing dst address");
3015 if (add_dst(cmd, *av, proto)) {
3017 if (F_LEN(cmd) != 0) { /* ! any */
3019 cmd = next_cmd(cmd);
3022 errx( EX_USAGE, "bad destination address %s", *av);
3026 * dest. ports, optional
3028 NOT_BLOCK; /* optional "not" */
3030 if (_substrcmp(*av, "any") == 0 ||
3031 add_ports(cmd, *av, proto, O_IP_DSTPORT)) {
3033 if (F_LEN(cmd) != 0)
3034 cmd = next_cmd(cmd);
3039 if (ac && first_cmd == cmd) {
3041 * nothing specified so far, store in the rule to ease
3049 ipfw_insn_u32 *cmd32; /* alias for cmd */
3052 cmd32 = (ipfw_insn_u32 *)cmd;
3054 if (*s == '!') { /* alternate syntax for NOT */
3055 if (cmd->len & F_NOT)
3056 errx(EX_USAGE, "double \"not\" not allowed\n");
3060 i = match_token(rule_options, s);
3064 if (cmd->len & F_NOT)
3065 errx(EX_USAGE, "double \"not\" not allowed\n");
3070 if (open_par == 0 || prev == NULL)
3071 errx(EX_USAGE, "invalid \"or\" block\n");
3075 case TOK_STARTBRACE:
3077 errx(EX_USAGE, "+nested \"(\" not allowed\n");
3083 errx(EX_USAGE, "+missing \")\"\n");
3089 fill_cmd(cmd, O_IN, 0, 0);
3093 cmd->len ^= F_NOT; /* toggle F_NOT */
3094 fill_cmd(cmd, O_IN, 0, 0);
3098 fill_cmd(cmd, O_DIVERTED, 0, 3);
3101 case TOK_DIVERTEDLOOPBACK:
3102 fill_cmd(cmd, O_DIVERTED, 0, 1);
3105 case TOK_DIVERTEDOUTPUT:
3106 fill_cmd(cmd, O_DIVERTED, 0, 2);
3110 fill_cmd(cmd, O_FRAG, 0, 0);
3114 fill_cmd(cmd, O_LAYER2, 0, 0);
3120 NEED1("recv, xmit, via require interface name"
3122 fill_iface((ipfw_insn_if *)cmd, av[0]);
3124 if (F_LEN(cmd) == 0) /* not a valid address */
3127 cmd->opcode = O_XMIT;
3128 else if (i == TOK_RECV)
3129 cmd->opcode = O_RECV;
3130 else if (i == TOK_VIA)
3131 cmd->opcode = O_VIA;
3135 NEED1("icmptypes requires list of types");
3136 fill_icmptypes((ipfw_insn_u32 *)cmd, *av);
3140 case TOK_ICMP6TYPES:
3141 NEED1("icmptypes requires list of types");
3142 fill_icmp6types((ipfw_insn_icmp6 *)cmd, *av);
3147 NEED1("ipttl requires TTL");
3148 if (strpbrk(*av, "-,")) {
3149 if (!add_ports(cmd, *av, 0, O_IPTTL))
3150 errx(EX_DATAERR, "invalid ipttl %s", *av);
3152 fill_cmd(cmd, O_IPTTL, 0, strtoul(*av, NULL, 0));
3157 NEED1("ipid requires id");
3158 if (strpbrk(*av, "-,")) {
3159 if (!add_ports(cmd, *av, 0, O_IPID))
3160 errx(EX_DATAERR, "invalid ipid %s", *av);
3162 fill_cmd(cmd, O_IPID, 0, strtoul(*av, NULL, 0));
3167 NEED1("iplen requires length");
3168 if (strpbrk(*av, "-,")) {
3169 if (!add_ports(cmd, *av, 0, O_IPLEN))
3170 errx(EX_DATAERR, "invalid ip len %s", *av);
3172 fill_cmd(cmd, O_IPLEN, 0, strtoul(*av, NULL, 0));
3177 NEED1("ipver requires version");
3178 fill_cmd(cmd, O_IPVER, 0, strtoul(*av, NULL, 0));
3182 case TOK_IPPRECEDENCE:
3183 NEED1("ipprecedence requires value");
3184 fill_cmd(cmd, O_IPPRECEDENCE, 0,
3185 (strtoul(*av, NULL, 0) & 7) << 5);
3190 NEED1("missing argument for ipoptions");
3191 fill_flags(cmd, O_IPOPT, f_ipopts, *av);
3196 NEED1("missing argument for iptos");
3197 fill_flags(cmd, O_IPTOS, f_iptos, *av);
3202 NEED1("uid requires argument");
3208 cmd->opcode = O_UID;
3209 uid = strtoul(*av, &end, 0);
3210 pwd = (*end == '\0') ? getpwuid(uid) : getpwnam(*av);
3212 errx(EX_DATAERR, "uid \"%s\" nonexistent", *av);
3213 cmd32->d[0] = pwd->pw_uid;
3214 cmd->len |= F_INSN_SIZE(ipfw_insn_u32);
3220 NEED1("gid requires argument");
3226 cmd->opcode = O_GID;
3227 gid = strtoul(*av, &end, 0);
3228 grp = (*end == '\0') ? getgrgid(gid) : getgrnam(*av);
3230 errx(EX_DATAERR, "gid \"%s\" nonexistent", *av);
3231 cmd32->d[0] = grp->gr_gid;
3232 cmd->len |= F_INSN_SIZE(ipfw_insn_u32);
3238 NEED1("jail requires argument");
3243 cmd->opcode = O_JAIL;
3244 jid = (int)strtol(*av, &end, 0);
3245 if (jid < 0 || *end != '\0')
3246 errx(EX_DATAERR, "jail requires prison ID");
3247 cmd32->d[0] = (uint32_t)jid;
3248 cmd->len |= F_INSN_SIZE(ipfw_insn_u32);
3254 fill_cmd(cmd, O_ESTAB, 0, 0);
3258 fill_cmd(cmd, O_TCPFLAGS, 0,
3259 (TH_SYN) | ( (TH_ACK) & 0xff) <<8 );
3262 case TOK_TCPDATALEN:
3263 NEED1("tcpdatalen requires length");
3264 if (strpbrk(*av, "-,")) {
3265 if (!add_ports(cmd, *av, 0, O_TCPDATALEN))
3266 errx(EX_DATAERR, "invalid tcpdata len %s", *av);
3268 fill_cmd(cmd, O_TCPDATALEN, 0,
3269 strtoul(*av, NULL, 0));
3274 NEED1("missing argument for tcpoptions");
3275 fill_flags(cmd, O_TCPOPTS, f_tcpopts, *av);
3281 NEED1("tcpseq/tcpack requires argument");
3282 cmd->len = F_INSN_SIZE(ipfw_insn_u32);
3283 cmd->opcode = (i == TOK_TCPSEQ) ? O_TCPSEQ : O_TCPACK;
3284 cmd32->d[0] = htonl(strtoul(*av, NULL, 0));
3289 NEED1("tcpwin requires length");
3290 fill_cmd(cmd, O_TCPWIN, 0,
3291 htons(strtoul(*av, NULL, 0)));
3296 NEED1("missing argument for tcpflags");
3297 cmd->opcode = O_TCPFLAGS;
3298 fill_flags(cmd, O_TCPFLAGS, f_tcpflags, *av);
3304 errx(EX_USAGE, "keep-state cannot be part "
3307 errx(EX_USAGE, "only one of keep-state "
3308 "and limit is allowed");
3310 fill_cmd(cmd, O_KEEP_STATE, 0, 0);
3314 ipfw_insn_limit *c = (ipfw_insn_limit *)cmd;
3319 "limit cannot be part of an or block");
3321 errx(EX_USAGE, "only one of keep-state and "
3322 "limit is allowed");
3325 cmd->len = F_INSN_SIZE(ipfw_insn_limit);
3326 cmd->opcode = O_LIMIT;
3327 c->limit_mask = c->conn_limit = 0;
3330 if ((val = match_token(limit_masks, *av)) <= 0)
3332 c->limit_mask |= val;
3336 if (c->limit_mask == 0)
3337 errx(EX_USAGE, "limit: missing limit mask");
3339 GET_UINT_ARG(c->conn_limit, 1, IPFW_DEFAULT_RULE - 1,
3340 TOK_LIMIT, rule_options);
3347 NEED1("missing protocol");
3348 if (add_proto(cmd, *av, &proto)) {
3351 errx(EX_DATAERR, "invalid protocol ``%s''",
3356 NEED1("missing source IP");
3357 if (add_srcip(cmd, *av)) {
3363 NEED1("missing destination IP");
3364 if (add_dstip(cmd, *av)) {
3370 NEED1("missing source IP6");
3371 if (add_srcip6(cmd, *av)) {
3377 NEED1("missing destination IP6");
3378 if (add_dstip6(cmd, *av)) {
3384 NEED1("missing source port");
3385 if (_substrcmp(*av, "any") == 0 ||
3386 add_ports(cmd, *av, proto, O_IP_SRCPORT)) {
3389 errx(EX_DATAERR, "invalid source port %s", *av);
3393 NEED1("missing destination port");
3394 if (_substrcmp(*av, "any") == 0 ||
3395 add_ports(cmd, *av, proto, O_IP_DSTPORT)) {
3398 errx(EX_DATAERR, "invalid destination port %s",
3403 if (add_mac(cmd, ac, av)) {
3409 NEED1("missing mac type");
3410 if (!add_mactype(cmd, ac, *av))
3411 errx(EX_DATAERR, "invalid mac type %s", *av);
3415 case TOK_VERREVPATH:
3416 fill_cmd(cmd, O_VERREVPATH, 0, 0);
3419 case TOK_VERSRCREACH:
3420 fill_cmd(cmd, O_VERSRCREACH, 0, 0);
3424 fill_cmd(cmd, O_ANTISPOOF, 0, 0);
3428 fill_cmd(cmd, O_IPSEC, 0, 0);
3432 fill_cmd(cmd, O_IP6, 0, 0);
3436 fill_cmd(cmd, O_IP4, 0, 0);
3440 fill_ext6hdr( cmd, *av );
3445 if (proto != IPPROTO_IPV6 )
3446 errx( EX_USAGE, "flow-id filter is active "
3447 "only for ipv6 protocol\n");
3448 fill_flow6( (ipfw_insn_u32 *) cmd, *av );
3453 fill_comment(cmd, ac, av);
3459 if (ac > 0 && strpbrk(*av, "-,")) {
3460 if (!add_ports(cmd, *av, 0, O_TAGGED))
3461 errx(EX_DATAERR, "tagged: invalid tag"
3467 GET_UINT_ARG(tag, 1, IPFW_DEFAULT_RULE - 1,
3468 TOK_TAGGED, rule_options);
3469 fill_cmd(cmd, O_TAGGED, 0, tag);
3475 NEED1("fib requires fib number");
3476 fill_cmd(cmd, O_FIB, 0, strtoul(*av, NULL, 0));
3481 errx(EX_USAGE, "unrecognised option [%d] %s\n", i, s);
3483 if (F_LEN(cmd) > 0) { /* prepare to advance */
3485 cmd = next_cmd(cmd);
3491 * Now copy stuff into the rule.
3492 * If we have a keep-state option, the first instruction
3493 * must be a PROBE_STATE (which is generated here).
3494 * If we have a LOG option, it was stored as the first command,
3495 * and now must be moved to the top of the action part.
3497 dst = (ipfw_insn *)rule->cmd;
3500 * First thing to write into the command stream is the match probability.
3502 if (match_prob != 1) { /* 1 means always match */
3503 dst->opcode = O_PROB;
3505 *((int32_t *)(dst+1)) = (int32_t)(match_prob * 0x7fffffff);
3510 * generate O_PROBE_STATE if necessary
3512 if (have_state && have_state->opcode != O_CHECK_STATE) {
3513 fill_cmd(dst, O_PROBE_STATE, 0, 0);
3514 dst = next_cmd(dst);
3517 /* copy all commands but O_LOG, O_KEEP_STATE, O_LIMIT, O_ALTQ, O_TAG */
3518 for (src = (ipfw_insn *)cmdbuf; src != cmd; src += i) {
3521 switch (src->opcode) {
3529 bcopy(src, dst, i * sizeof(uint32_t));
3535 * put back the have_state command as last opcode
3537 if (have_state && have_state->opcode != O_CHECK_STATE) {
3538 i = F_LEN(have_state);
3539 bcopy(have_state, dst, i * sizeof(uint32_t));
3543 * start action section
3545 rule->act_ofs = dst - rule->cmd;
3547 /* put back O_LOG, O_ALTQ, O_TAG if necessary */
3549 i = F_LEN(have_log);
3550 bcopy(have_log, dst, i * sizeof(uint32_t));
3554 i = F_LEN(have_altq);
3555 bcopy(have_altq, dst, i * sizeof(uint32_t));
3559 i = F_LEN(have_tag);
3560 bcopy(have_tag, dst, i * sizeof(uint32_t));
3564 * copy all other actions
3566 for (src = (ipfw_insn *)actbuf; src != action; src += i) {
3568 bcopy(src, dst, i * sizeof(uint32_t));
3572 rule->cmd_len = (uint32_t *)dst - (uint32_t *)(rule->cmd);
3573 i = (char *)dst - (char *)rule;
3574 if (do_cmd(IP_FW_ADD, rule, (uintptr_t)&i) == -1)
3575 err(EX_UNAVAILABLE, "getsockopt(%s)", "IP_FW_ADD");
3577 show_ipfw(rule, 0, 0);
3581 * clear the counters or the log counters.
3584 ipfw_zero(int ac, char *av[], int optname /* 0 = IP_FW_ZERO, 1 = IP_FW_RESETLOG */)
3586 uint32_t arg, saved_arg;
3589 char const *name = optname ? "RESETLOG" : "ZERO";
3591 optname = optname ? IP_FW_RESETLOG : IP_FW_ZERO;
3596 /* clear all entries */
3597 if (do_cmd(optname, NULL, 0) < 0)
3598 err(EX_UNAVAILABLE, "setsockopt(IP_FW_%s)", name);
3600 printf("%s.\n", optname == IP_FW_ZERO ?
3601 "Accounting cleared":"Logging counts reset");
3608 if (isdigit(**av)) {
3609 arg = strtonum(*av, 0, 0xffff, &errstr);
3612 "invalid rule number %s\n", *av);
3615 arg |= (1 << 24) | ((co.use_set - 1) << 16);
3618 if (do_cmd(optname, &arg, sizeof(arg))) {
3619 warn("rule %u: setsockopt(IP_FW_%s)",
3621 failed = EX_UNAVAILABLE;
3622 } else if (!co.do_quiet)
3623 printf("Entry %d %s.\n", saved_arg,
3624 optname == IP_FW_ZERO ?
3625 "cleared" : "logging count reset");
3627 errx(EX_USAGE, "invalid rule number ``%s''", *av);
3630 if (failed != EX_OK)
3635 ipfw_flush(int force)
3637 int cmd = co.do_pipe ? IP_DUMMYNET_FLUSH : IP_FW_FLUSH;
3639 if (!force && !co.do_quiet) { /* need to ask user */
3642 printf("Are you sure? [yn] ");
3645 c = toupper(getc(stdin));
3646 while (c != '\n' && getc(stdin) != '\n')
3648 return; /* and do not flush */
3649 } while (c != 'Y' && c != 'N');
3651 if (c == 'N') /* user said no */
3654 /* `ipfw set N flush` - is the same that `ipfw delete set N` */
3656 uint32_t arg = ((co.use_set - 1) & 0xffff) | (1 << 24);
3657 if (do_cmd(IP_FW_DEL, &arg, sizeof(arg)) < 0)
3658 err(EX_UNAVAILABLE, "setsockopt(IP_FW_DEL)");
3659 } else if (do_cmd(cmd, NULL, 0) < 0)
3660 err(EX_UNAVAILABLE, "setsockopt(IP_%s_FLUSH)",
3661 co.do_pipe ? "DUMMYNET" : "FW");
3663 printf("Flushed all %s.\n", co.do_pipe ? "pipes" : "rules");
3667 static void table_list(ipfw_table_entry ent, int need_header);
3670 * This one handles all table-related commands
3671 * ipfw table N add addr[/masklen] [value]
3672 * ipfw table N delete addr[/masklen]
3673 * ipfw table {N | all} flush
3674 * ipfw table {N | all} list
3677 ipfw_table_handler(int ac, char *av[])
3679 ipfw_table_entry ent;
3685 uint32_t tables_max;
3687 len = sizeof(tables_max);
3688 if (sysctlbyname("net.inet.ip.fw.tables_max", &tables_max, &len,
3690 #ifdef IPFW_TABLES_MAX
3691 warn("Warn: Failed to get the max tables number via sysctl. "
3692 "Using the compiled in defaults. \nThe reason was");
3693 tables_max = IPFW_TABLES_MAX;
3695 errx(1, "Failed sysctlbyname(\"net.inet.ip.fw.tables_max\")");
3700 if (ac && isdigit(**av)) {
3701 ent.tbl = atoi(*av);
3704 } else if (ac && _substrcmp(*av, "all") == 0) {
3709 errx(EX_USAGE, "table number or 'all' keyword required");
3710 if (ent.tbl >= tables_max)
3711 errx(EX_USAGE, "The table number exceeds the maximum allowed "
3712 "value (%d)", tables_max - 1);
3713 NEED1("table needs command");
3714 if (is_all && _substrcmp(*av, "list") != 0
3715 && _substrcmp(*av, "flush") != 0)
3716 errx(EX_USAGE, "table number required");
3718 if (_substrcmp(*av, "add") == 0 ||
3719 _substrcmp(*av, "delete") == 0) {
3720 do_add = **av == 'a';
3723 errx(EX_USAGE, "IP address required");
3724 p = strchr(*av, '/');
3727 ent.masklen = atoi(p);
3728 if (ent.masklen > 32)
3729 errx(EX_DATAERR, "bad width ``%s''", p);
3732 if (lookup_host(*av, (struct in_addr *)&ent.addr) != 0)
3733 errx(EX_NOHOST, "hostname ``%s'' unknown", *av);
3737 /* isdigit is a bit of a hack here.. */
3738 if (strchr(*av, (int)'.') == NULL && isdigit(**av)) {
3739 ent.value = strtoul(*av, NULL, 0);
3741 if (lookup_host(*av, (struct in_addr *)&tval) == 0) {
3742 /* The value must be stored in host order *
3743 * so that the values < 65k can be distinguished */
3744 ent.value = ntohl(tval);
3746 errx(EX_NOHOST, "hostname ``%s'' unknown", *av);
3751 if (do_cmd(do_add ? IP_FW_TABLE_ADD : IP_FW_TABLE_DEL,
3752 &ent, sizeof(ent)) < 0) {
3753 /* If running silent, don't bomb out on these errors. */
3754 if (!(co.do_quiet && (errno == (do_add ? EEXIST : ESRCH))))
3755 err(EX_OSERR, "setsockopt(IP_FW_TABLE_%s)",
3756 do_add ? "ADD" : "DEL");
3757 /* In silent mode, react to a failed add by deleting */
3759 do_cmd(IP_FW_TABLE_DEL, &ent, sizeof(ent));
3760 if (do_cmd(IP_FW_TABLE_ADD,
3761 &ent, sizeof(ent)) < 0)
3763 "setsockopt(IP_FW_TABLE_ADD)");
3766 } else if (_substrcmp(*av, "flush") == 0) {
3767 a = is_all ? tables_max : (ent.tbl + 1);
3769 if (do_cmd(IP_FW_TABLE_FLUSH, &ent.tbl,
3770 sizeof(ent.tbl)) < 0)
3771 err(EX_OSERR, "setsockopt(IP_FW_TABLE_FLUSH)");
3772 } while (++ent.tbl < a);
3773 } else if (_substrcmp(*av, "list") == 0) {
3774 a = is_all ? tables_max : (ent.tbl + 1);
3776 table_list(ent, is_all);
3777 } while (++ent.tbl < a);
3779 errx(EX_USAGE, "invalid table command %s", *av);
3783 table_list(ipfw_table_entry ent, int need_header)
3791 if (do_cmd(IP_FW_TABLE_GETSIZE, &a, (uintptr_t)&l) < 0)
3792 err(EX_OSERR, "getsockopt(IP_FW_TABLE_GETSIZE)");
3794 /* If a is zero we have nothing to do, the table is empty. */
3798 l = sizeof(*tbl) + a * sizeof(ipfw_table_entry);
3799 tbl = safe_calloc(1, l);
3801 if (do_cmd(IP_FW_TABLE_LIST, tbl, (uintptr_t)&l) < 0)
3802 err(EX_OSERR, "getsockopt(IP_FW_TABLE_LIST)");
3803 if (tbl->cnt && need_header)
3804 printf("---table(%d)---\n", tbl->tbl);
3805 for (a = 0; a < tbl->cnt; a++) {
3807 tval = tbl->ent[a].value;
3808 if (co.do_value_as_ip) {
3810 strncpy(tbuf, inet_ntoa(*(struct in_addr *)
3811 &tbl->ent[a].addr), 127);
3812 /* inet_ntoa expects network order */
3814 printf("%s/%u %s\n", tbuf, tbl->ent[a].masklen,
3815 inet_ntoa(*(struct in_addr *)&tval));
3817 printf("%s/%u %u\n",
3818 inet_ntoa(*(struct in_addr *)&tbl->ent[a].addr),
3819 tbl->ent[a].masklen, tval);