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
23 #include <sys/types.h>
24 #include <sys/param.h>
25 #include <sys/socket.h>
26 #include <sys/sockio.h>
27 #include <sys/sysctl.h>
44 #include <time.h> /* ctime */
45 #include <timeconv.h> /* _long_to_time */
48 #include <stddef.h> /* offsetof */
50 #include <net/ethernet.h>
51 #include <net/if.h> /* only IFNAMSIZ */
52 #include <netinet/in.h>
53 #include <netinet/in_systm.h> /* only n_short, n_long */
54 #include <netinet/ip.h>
55 #include <netinet/ip_icmp.h>
56 #include <netinet/ip_fw.h>
57 #include <netinet/tcp.h>
58 #include <arpa/inet.h>
60 struct cmdline_opts g_co; /* global options */
66 int show_time; /* show timestamp */
67 uint32_t set_mask; /* enabled sets mask */
68 uint32_t flags; /* request flags */
69 uint32_t first; /* first rule to request */
70 uint32_t last; /* last rule to request */
71 uint32_t dcnt; /* number of dynamic states */
72 ipfw_obj_ctlv *tstate; /* table state data */
75 int resvd_set_number = RESVD_SET;
77 static int ipfw_socket = -1;
79 #define CHECK_LENGTH(v, len) do { \
81 errx(EX_DATAERR, "Rule too long"); \
84 * Check if we have enough space in cmd buffer. Note that since
85 * first 8? u32 words are reserved by reserved header, full cmd
86 * buffer can't be used, so we need to protect from buffer overrun
87 * only. At the beginning, cblen is less than actual buffer size by
88 * size of ipfw_insn_u32 instruction + 1 u32 work. This eliminates need
89 * for checking small instructions fitting in given range.
90 * We also (ab)use the fact that ipfw_insn is always the first field
91 * for any custom instruction.
93 #define CHECK_CMDLEN CHECK_LENGTH(cblen, F_LEN((ipfw_insn *)cmd))
95 #define GET_UINT_ARG(arg, min, max, tok, s_x) do { \
97 errx(EX_USAGE, "%s: missing argument", match_value(s_x, tok)); \
98 if (_substrcmp(*av, "tablearg") == 0) { \
107 _xval = strtol(*av, &end, 10); \
109 if (!isdigit(**av) || *end != '\0' || (_xval == 0 && errno == EINVAL)) \
110 errx(EX_DATAERR, "%s: invalid argument: %s", \
111 match_value(s_x, tok), *av); \
113 if (errno == ERANGE || _xval < min || _xval > max) \
114 errx(EX_DATAERR, "%s: argument is out of range (%u..%u): %s", \
115 match_value(s_x, tok), min, max, *av); \
117 if (_xval == IP_FW_TARG) \
118 errx(EX_DATAERR, "%s: illegal argument value: %s", \
119 match_value(s_x, tok), *av); \
124 static struct _s_x f_tcpflags[] = {
135 static struct _s_x f_tcpopts[] = {
136 { "mss", IP_FW_TCPOPT_MSS },
137 { "maxseg", IP_FW_TCPOPT_MSS },
138 { "window", IP_FW_TCPOPT_WINDOW },
139 { "sack", IP_FW_TCPOPT_SACK },
140 { "ts", IP_FW_TCPOPT_TS },
141 { "timestamp", IP_FW_TCPOPT_TS },
142 { "cc", IP_FW_TCPOPT_CC },
148 * IP options span the range 0 to 255 so we need to remap them
149 * (though in fact only the low 5 bits are significant).
151 static struct _s_x f_ipopts[] = {
152 { "ssrr", IP_FW_IPOPT_SSRR},
153 { "lsrr", IP_FW_IPOPT_LSRR},
154 { "rr", IP_FW_IPOPT_RR},
155 { "ts", IP_FW_IPOPT_TS},
160 static struct _s_x f_iptos[] = {
161 { "lowdelay", IPTOS_LOWDELAY},
162 { "throughput", IPTOS_THROUGHPUT},
163 { "reliability", IPTOS_RELIABILITY},
164 { "mincost", IPTOS_MINCOST},
165 { "congestion", IPTOS_ECN_CE},
166 { "ecntransport", IPTOS_ECN_ECT0},
167 { "ip tos option", 0},
171 static struct _s_x f_ipoff[] = {
172 { "rf", IP_RF >> 8 },
173 { "df", IP_DF >> 8 },
174 { "mf", IP_MF >> 8 },
179 struct _s_x f_ipdscp[] = {
180 { "af11", IPTOS_DSCP_AF11 >> 2 }, /* 001010 */
181 { "af12", IPTOS_DSCP_AF12 >> 2 }, /* 001100 */
182 { "af13", IPTOS_DSCP_AF13 >> 2 }, /* 001110 */
183 { "af21", IPTOS_DSCP_AF21 >> 2 }, /* 010010 */
184 { "af22", IPTOS_DSCP_AF22 >> 2 }, /* 010100 */
185 { "af23", IPTOS_DSCP_AF23 >> 2 }, /* 010110 */
186 { "af31", IPTOS_DSCP_AF31 >> 2 }, /* 011010 */
187 { "af32", IPTOS_DSCP_AF32 >> 2 }, /* 011100 */
188 { "af33", IPTOS_DSCP_AF33 >> 2 }, /* 011110 */
189 { "af41", IPTOS_DSCP_AF41 >> 2 }, /* 100010 */
190 { "af42", IPTOS_DSCP_AF42 >> 2 }, /* 100100 */
191 { "af43", IPTOS_DSCP_AF43 >> 2 }, /* 100110 */
192 { "be", IPTOS_DSCP_CS0 >> 2 }, /* 000000 */
193 { "ef", IPTOS_DSCP_EF >> 2 }, /* 101110 */
194 { "cs0", IPTOS_DSCP_CS0 >> 2 }, /* 000000 */
195 { "cs1", IPTOS_DSCP_CS1 >> 2 }, /* 001000 */
196 { "cs2", IPTOS_DSCP_CS2 >> 2 }, /* 010000 */
197 { "cs3", IPTOS_DSCP_CS3 >> 2 }, /* 011000 */
198 { "cs4", IPTOS_DSCP_CS4 >> 2 }, /* 100000 */
199 { "cs5", IPTOS_DSCP_CS5 >> 2 }, /* 101000 */
200 { "cs6", IPTOS_DSCP_CS6 >> 2 }, /* 110000 */
201 { "cs7", IPTOS_DSCP_CS7 >> 2 }, /* 100000 */
205 static struct _s_x limit_masks[] = {
206 {"all", DYN_SRC_ADDR|DYN_SRC_PORT|DYN_DST_ADDR|DYN_DST_PORT},
207 {"src-addr", DYN_SRC_ADDR},
208 {"src-port", DYN_SRC_PORT},
209 {"dst-addr", DYN_DST_ADDR},
210 {"dst-port", DYN_DST_PORT},
215 * we use IPPROTO_ETHERTYPE as a fake protocol id to call the print routines
216 * This is only used in this code.
218 #define IPPROTO_ETHERTYPE 0x1000
219 static struct _s_x ether_types[] = {
221 * Note, we cannot use "-:&/" in the names because they are field
222 * separators in the type specifications. Also, we use s = NULL as
223 * end-delimiter, because a type of 0 can be legal.
236 { "pppoe_disc", 0x8863 },
237 { "pppoe_sess", 0x8864 },
238 { "ipx_8022", 0x00E0 },
239 { "ipx_8023", 0x0000 },
240 { "ipx_ii", 0x8137 },
241 { "ipx_snap", 0x8137 },
247 static struct _s_x rule_eactions[] = {
248 { "nat64clat", TOK_NAT64CLAT },
249 { "nat64lsn", TOK_NAT64LSN },
250 { "nat64stl", TOK_NAT64STL },
251 { "nptv6", TOK_NPTV6 },
252 { "tcp-setmss", TOK_TCPSETMSS },
253 { NULL, 0 } /* terminator */
256 static struct _s_x rule_actions[] = {
257 { "abort6", TOK_ABORT6 },
258 { "abort", TOK_ABORT },
259 { "accept", TOK_ACCEPT },
260 { "pass", TOK_ACCEPT },
261 { "allow", TOK_ACCEPT },
262 { "permit", TOK_ACCEPT },
263 { "count", TOK_COUNT },
264 { "pipe", TOK_PIPE },
265 { "queue", TOK_QUEUE },
266 { "divert", TOK_DIVERT },
268 { "netgraph", TOK_NETGRAPH },
269 { "ngtee", TOK_NGTEE },
270 { "fwd", TOK_FORWARD },
271 { "forward", TOK_FORWARD },
272 { "skipto", TOK_SKIPTO },
273 { "deny", TOK_DENY },
274 { "drop", TOK_DENY },
275 { "reject", TOK_REJECT },
276 { "reset6", TOK_RESET6 },
277 { "reset", TOK_RESET },
278 { "unreach6", TOK_UNREACH6 },
279 { "unreach", TOK_UNREACH },
280 { "check-state", TOK_CHECKSTATE },
281 { "//", TOK_COMMENT },
283 { "reass", TOK_REASS },
284 { "setfib", TOK_SETFIB },
285 { "setdscp", TOK_SETDSCP },
286 { "call", TOK_CALL },
287 { "return", TOK_RETURN },
288 { "eaction", TOK_EACTION },
289 { "tcp-setmss", TOK_TCPSETMSS },
290 { NULL, 0 } /* terminator */
293 static struct _s_x rule_action_params[] = {
294 { "altq", TOK_ALTQ },
297 { "untag", TOK_UNTAG },
298 { NULL, 0 } /* terminator */
302 * The 'lookup' instruction accepts one of the following arguments.
303 * -1 is a terminator for the list.
304 * Arguments are passed as v[1] in O_DST_LOOKUP options.
306 static int lookup_key[] = {
307 TOK_DSTIP, TOK_SRCIP, TOK_DSTPORT, TOK_SRCPORT,
308 TOK_UID, TOK_JAIL, TOK_DSCP, -1 };
310 static struct _s_x rule_options[] = {
311 { "tagged", TOK_TAGGED },
314 { "jail", TOK_JAIL },
316 { "limit", TOK_LIMIT },
317 { "set-limit", TOK_SETLIMIT },
318 { "keep-state", TOK_KEEPSTATE },
319 { "record-state", TOK_RECORDSTATE },
320 { "bridged", TOK_LAYER2 },
321 { "layer2", TOK_LAYER2 },
323 { "diverted", TOK_DIVERTED },
324 { "diverted-loopback", TOK_DIVERTEDLOOPBACK },
325 { "diverted-output", TOK_DIVERTEDOUTPUT },
326 { "xmit", TOK_XMIT },
327 { "recv", TOK_RECV },
329 { "fragment", TOK_FRAG },
330 { "frag", TOK_FRAG },
332 { "ipoptions", TOK_IPOPTS },
333 { "ipopts", TOK_IPOPTS },
334 { "iplen", TOK_IPLEN },
335 { "ipid", TOK_IPID },
336 { "ipprecedence", TOK_IPPRECEDENCE },
337 { "dscp", TOK_DSCP },
338 { "iptos", TOK_IPTOS },
339 { "ipttl", TOK_IPTTL },
340 { "ipversion", TOK_IPVER },
341 { "ipver", TOK_IPVER },
342 { "estab", TOK_ESTAB },
343 { "established", TOK_ESTAB },
344 { "setup", TOK_SETUP },
345 { "sockarg", TOK_SOCKARG },
346 { "tcpdatalen", TOK_TCPDATALEN },
347 { "tcpflags", TOK_TCPFLAGS },
348 { "tcpflgs", TOK_TCPFLAGS },
349 { "tcpmss", TOK_TCPMSS },
350 { "tcpoptions", TOK_TCPOPTS },
351 { "tcpopts", TOK_TCPOPTS },
352 { "tcpseq", TOK_TCPSEQ },
353 { "tcpack", TOK_TCPACK },
354 { "tcpwin", TOK_TCPWIN },
355 { "icmptype", TOK_ICMPTYPES },
356 { "icmptypes", TOK_ICMPTYPES },
357 { "dst-ip", TOK_DSTIP },
358 { "src-ip", TOK_SRCIP },
359 { "dst-port", TOK_DSTPORT },
360 { "src-port", TOK_SRCPORT },
361 { "proto", TOK_PROTO },
364 { "mac-type", TOK_MACTYPE },
365 { "verrevpath", TOK_VERREVPATH },
366 { "versrcreach", TOK_VERSRCREACH },
367 { "antispoof", TOK_ANTISPOOF },
368 { "ipsec", TOK_IPSEC },
369 { "icmp6type", TOK_ICMP6TYPES },
370 { "icmp6types", TOK_ICMP6TYPES },
371 { "ext6hdr", TOK_EXT6HDR},
372 { "flow-id", TOK_FLOWID},
377 { "dst-ipv6", TOK_DSTIP6},
378 { "dst-ip6", TOK_DSTIP6},
379 { "src-ipv6", TOK_SRCIP6},
380 { "src-ip6", TOK_SRCIP6},
381 { "lookup", TOK_LOOKUP},
383 { "defer-action", TOK_SKIPACTION },
384 { "defer-immediate-action", TOK_SKIPACTION },
385 { "//", TOK_COMMENT },
387 { "not", TOK_NOT }, /* pseudo option */
388 { "!", /* escape ? */ TOK_NOT }, /* pseudo option */
389 { "or", TOK_OR }, /* pseudo option */
390 { "|", /* escape */ TOK_OR }, /* pseudo option */
391 { "{", TOK_STARTBRACE }, /* pseudo option */
392 { "(", TOK_STARTBRACE }, /* pseudo option */
393 { "}", TOK_ENDBRACE }, /* pseudo option */
394 { ")", TOK_ENDBRACE }, /* pseudo option */
395 { NULL, 0 } /* terminator */
398 void bprint_uint_arg(struct buf_pr *bp, const char *str, uint32_t arg);
399 static int ipfw_get_config(struct cmdline_opts *co, struct format_opts *fo,
400 ipfw_cfg_lheader **pcfg, size_t *psize);
401 static int ipfw_show_config(struct cmdline_opts *co, struct format_opts *fo,
402 ipfw_cfg_lheader *cfg, size_t sz, int ac, char **av);
403 static void ipfw_list_tifaces(void);
406 static uint16_t pack_object(struct tidx *tstate, const char *name, int otype);
407 static uint16_t pack_table(struct tidx *tstate, const char *name);
409 static char *table_search_ctlv(ipfw_obj_ctlv *ctlv, uint16_t idx);
410 static void object_sort_ctlv(ipfw_obj_ctlv *ctlv);
411 static char *object_search_ctlv(ipfw_obj_ctlv *ctlv, uint16_t idx,
415 * Simple string buffer API.
416 * Used to simplify buffer passing between function and for
417 * transparent overrun handling.
421 * Allocates new buffer of given size @sz.
423 * Returns 0 on success.
426 bp_alloc(struct buf_pr *b, size_t size)
428 memset(b, 0, sizeof(struct buf_pr));
430 if ((b->buf = calloc(1, size)) == NULL)
441 bp_free(struct buf_pr *b)
448 * Flushes buffer so new writer start from beginning.
451 bp_flush(struct buf_pr *b)
460 * Print message specified by @format and args.
461 * Automatically manage buffer space and transparently handle
464 * Returns number of bytes that should have been printed.
467 bprintf(struct buf_pr *b, const char *format, ...)
472 va_start(args, format);
474 i = vsnprintf(b->ptr, b->avail, format, args);
477 if (i < 0 || (size_t)i > b->avail) {
478 /* Overflow or print error */
491 * Special values printer for tablearg-aware opcodes.
494 bprint_uint_arg(struct buf_pr *bp, const char *str, uint32_t arg)
498 bprintf(bp, "%s", str);
499 if (arg == IP_FW_TARG)
500 bprintf(bp, "tablearg");
502 bprintf(bp, "%u", arg);
506 * Helper routine to print a possibly unaligned uint64_t on
507 * various platform. If width > 0, print the value with
508 * the desired width, followed by a space;
509 * otherwise, return the required width.
512 pr_u64(struct buf_pr *b, void *pd, int width)
515 #define U64_FMT "I64"
517 #define U64_FMT "llu"
520 unsigned long long d;
522 bcopy (pd, &u, sizeof(u));
525 bprintf(b, "%*" U64_FMT " ", width, d) :
526 snprintf(NULL, 0, "%" U64_FMT, d) ;
532 safe_calloc(size_t number, size_t size)
534 void *ret = calloc(number, size);
537 err(EX_OSERR, "calloc");
542 safe_realloc(void *ptr, size_t size)
544 void *ret = realloc(ptr, size);
547 err(EX_OSERR, "realloc");
552 * Compare things like interface or table names.
555 stringnum_cmp(const char *a, const char *b)
567 return (strcmp(a, b));
572 * conditionally runs the command.
573 * Selected options or negative -> getsockopt
576 do_cmd(int optname, void *optval, uintptr_t optlen)
583 if (ipfw_socket == -1)
584 ipfw_socket = socket(AF_INET, SOCK_RAW, IPPROTO_RAW);
586 err(EX_UNAVAILABLE, "socket");
588 if (optname == IP_FW_GET || optname == IP_DUMMYNET_GET ||
589 optname == IP_FW_ADD || optname == IP_FW3 ||
590 optname == IP_FW_NAT_GET_CONFIG ||
592 optname == IP_FW_NAT_GET_LOG) {
595 i = getsockopt(ipfw_socket, IPPROTO_IP, optname, optval,
596 (socklen_t *)optlen);
598 i = setsockopt(ipfw_socket, IPPROTO_IP, optname, optval, optlen);
604 * do_set3 - pass ipfw control cmd to kernel
605 * @optname: option name
606 * @optval: pointer to option data
607 * @optlen: option length
609 * Assumes op3 header is already embedded.
610 * Calls setsockopt() with IP_FW3 as kernel-visible opcode.
611 * Returns 0 on success or errno otherwise.
614 do_set3(int optname, ip_fw3_opheader *op3, size_t optlen)
620 if (ipfw_socket == -1)
621 ipfw_socket = socket(AF_INET, SOCK_RAW, IPPROTO_RAW);
623 err(EX_UNAVAILABLE, "socket");
625 op3->opcode = optname;
627 return (setsockopt(ipfw_socket, IPPROTO_IP, IP_FW3, op3, optlen));
631 * do_get3 - pass ipfw control cmd to kernel
632 * @optname: option name
633 * @optval: pointer to option data
634 * @optlen: pointer to option length
636 * Assumes op3 header is already embedded.
637 * Calls getsockopt() with IP_FW3 as kernel-visible opcode.
638 * Returns 0 on success or errno otherwise.
641 do_get3(int optname, ip_fw3_opheader *op3, size_t *optlen)
649 if (ipfw_socket == -1)
650 ipfw_socket = socket(AF_INET, SOCK_RAW, IPPROTO_RAW);
652 err(EX_UNAVAILABLE, "socket");
654 op3->opcode = optname;
657 error = getsockopt(ipfw_socket, IPPROTO_IP, IP_FW3, op3, &len);
664 * match_token takes a table and a string, returns the value associated
665 * with the string (-1 in case of failure).
668 match_token(struct _s_x *table, const char *string)
671 uint i = strlen(string);
673 for (pt = table ; i && pt->s != NULL ; pt++)
674 if (strlen(pt->s) == i && !bcmp(string, pt->s, i))
680 * match_token_relaxed takes a table and a string, returns the value associated
681 * with the string for the best match.
684 * value from @table for matched records
685 * -1 for non-matched records
686 * -2 if more than one records match @string.
689 match_token_relaxed(struct _s_x *table, const char *string)
697 for (pt = table ; i != 0 && pt->s != NULL ; pt++) {
698 if (strncmp(pt->s, string, i) != 0)
707 return (c > 0 ? -2: -1);
711 get_token(struct _s_x *table, const char *string, const char *errbase)
715 if ((tcmd = match_token_relaxed(table, string)) < 0)
716 errx(EX_USAGE, "%s %s %s",
717 (tcmd == 0) ? "invalid" : "ambiguous", errbase, string);
723 * match_value takes a table and a value, returns the string associated
724 * with the value (NULL in case of failure).
727 match_value(struct _s_x *p, int value)
729 for (; p->s != NULL; p++)
736 concat_tokens(char *buf, size_t bufsize, struct _s_x *table,
737 const char *delimiter)
743 for (sz = 0, pt = table ; pt->s != NULL; pt++) {
744 l = snprintf(buf + sz, bufsize - sz, "%s%s",
745 (sz == 0) ? "" : delimiter, pt->s);
756 * helper function to process a set of flags and set bits in the
760 fill_flags(struct _s_x *flags, char *p, char **e, uint32_t *set,
763 char *q; /* points to the separator */
765 uint32_t *which; /* mask we are working on */
776 val = match_token(flags, p);
782 *which |= (uint32_t)val;
789 print_flags_buffer(char *buf, size_t sz, struct _s_x *list, uint32_t set)
791 char const *comma = "";
794 for (i = 0; list[i].x != 0; i++) {
795 if ((set & list[i].x) == 0)
799 l = snprintf(buf, sz, "%s%s", comma, list[i].s);
800 if (l < 0 || (size_t)l >= sz)
809 * _substrcmp takes two strings and returns 1 if they do not match,
810 * and 0 if they match exactly or the first string is a sub-string
811 * of the second. A warning is printed to stderr in the case that the
812 * first string is a sub-string of the second.
814 * This function will be removed in the future through the usual
815 * deprecation process.
818 _substrcmp(const char *str1, const char* str2)
821 if (strncmp(str1, str2, strlen(str1)) != 0)
824 if (strlen(str1) != strlen(str2))
825 warnx("DEPRECATED: '%s' matched '%s' as a sub-string",
831 * _substrcmp2 takes three strings and returns 1 if the first two do not match,
832 * and 0 if they match exactly or the second string is a sub-string
833 * of the first. A warning is printed to stderr in the case that the
834 * first string does not match the third.
836 * This function exists to warn about the bizarre construction
837 * strncmp(str, "by", 2) which is used to allow people to use a shortcut
838 * for "bytes". The problem is that in addition to accepting "by",
839 * "byt", "byte", and "bytes", it also excepts "by_rabid_dogs" and any
840 * other string beginning with "by".
842 * This function will be removed in the future through the usual
843 * deprecation process.
846 _substrcmp2(const char *str1, const char* str2, const char* str3)
849 if (strncmp(str1, str2, strlen(str2)) != 0)
852 if (strcmp(str1, str3) != 0)
853 warnx("DEPRECATED: '%s' matched '%s'",
859 * prints one port, symbolic or numeric
862 print_port(struct buf_pr *bp, int proto, uint16_t port)
865 if (proto == IPPROTO_ETHERTYPE) {
868 if (g_co.do_resolv && (s = match_value(ether_types, port)) )
869 bprintf(bp, "%s", s);
871 bprintf(bp, "0x%04x", port);
873 struct servent *se = NULL;
874 if (g_co.do_resolv) {
875 struct protoent *pe = getprotobynumber(proto);
877 se = getservbyport(htons(port), pe ? pe->p_name : NULL);
880 bprintf(bp, "%s", se->s_name);
882 bprintf(bp, "%d", port);
886 static struct _s_x _port_name[] = {
887 {"dst-port", O_IP_DSTPORT},
888 {"src-port", O_IP_SRCPORT},
892 {"mac-type", O_MAC_TYPE},
893 {"tcpdatalen", O_TCPDATALEN},
894 {"tcpmss", O_TCPMSS},
895 {"tcpwin", O_TCPWIN},
896 {"tagged", O_TAGGED},
901 * Print the values in a list 16-bit items of the types above.
902 * XXX todo: add support for mask.
905 print_newports(struct buf_pr *bp, const ipfw_insn_u16 *cmd, int proto, int opcode)
907 const uint16_t *p = cmd->ports;
912 sep = match_value(_port_name, opcode);
915 bprintf(bp, " %s", sep);
918 for (i = F_LEN((const ipfw_insn *)cmd) - 1; i > 0; i--, p += 2) {
919 bprintf(bp, "%s", sep);
920 print_port(bp, proto, p[0]);
923 print_port(bp, proto, p[1]);
930 * Like strtol, but also translates service names into port numbers
931 * for some protocols.
933 * proto == -1 disables the protocol check;
934 * proto == IPPROTO_ETHERTYPE looks up an internal table
935 * proto == <some value in /etc/protocols> matches the values there.
936 * Returns *end == s in case the parameter is not found.
939 strtoport(char *s, char **end, int base, int proto)
945 *end = s; /* default - not found */
947 return 0; /* not found */
950 return strtol(s, end, base);
953 * find separator. '\\' escapes the next char.
955 for (s1 = s; *s1 && (isalnum(*s1) || *s1 == '\\' ||
956 *s1 == '_' || *s1 == '.') ; s1++)
957 if (*s1 == '\\' && s1[1] != '\0')
960 buf = safe_calloc(s1 - s + 1, 1);
963 * copy into a buffer skipping backslashes
965 for (p = s, i = 0; p != s1 ; p++)
970 if (proto == IPPROTO_ETHERTYPE) {
971 i = match_token(ether_types, buf);
973 if (i != -1) { /* found */
978 struct protoent *pe = NULL;
982 pe = getprotobynumber(proto);
984 se = getservbyname(buf, pe ? pe->p_name : NULL);
988 return ntohs(se->s_port);
991 return 0; /* not found */
995 * Fill the body of the command with the list of port ranges.
998 fill_newports(ipfw_insn_u16 *cmd, char *av, int proto, int cblen)
1000 uint16_t a, b, *p = cmd->ports;
1005 a = strtoport(av, &s, 0, proto);
1006 if (s == av) /* empty or invalid argument */
1009 CHECK_LENGTH(cblen, i + 2);
1012 case '-': /* a range */
1014 b = strtoport(av, &s, 0, proto);
1015 /* Reject expressions like '1-abc' or '1-2-3'. */
1016 if (s == av || (*s != ',' && *s != '\0'))
1021 case ',': /* comma separated list */
1026 warnx("port list: invalid separator <%c> in <%s>",
1036 if (i + 1 > F_LEN_MASK)
1037 errx(EX_DATAERR, "too many ports/ranges\n");
1038 cmd->o.len |= i + 1; /* leave F_NOT and F_OR untouched */
1044 * Fill the body of the command with the list of DiffServ codepoints.
1047 fill_dscp(ipfw_insn *cmd, char *av, int cblen)
1049 uint32_t *low, *high;
1053 cmd->opcode = O_DSCP;
1054 cmd->len |= F_INSN_SIZE(ipfw_insn_u32) + 1;
1058 low = (uint32_t *)(cmd + 1);
1071 if ((code = match_token(f_ipdscp, s)) == -1)
1072 errx(EX_DATAERR, "Unknown DSCP code");
1074 code = strtoul(s, NULL, 10);
1075 if (code < 0 || code > 63)
1076 errx(EX_DATAERR, "Invalid DSCP value");
1080 *high |= 1 << (code - 32);
1088 static struct _s_x icmpcodes[] = {
1089 { "net", ICMP_UNREACH_NET },
1090 { "host", ICMP_UNREACH_HOST },
1091 { "protocol", ICMP_UNREACH_PROTOCOL },
1092 { "port", ICMP_UNREACH_PORT },
1093 { "needfrag", ICMP_UNREACH_NEEDFRAG },
1094 { "srcfail", ICMP_UNREACH_SRCFAIL },
1095 { "net-unknown", ICMP_UNREACH_NET_UNKNOWN },
1096 { "host-unknown", ICMP_UNREACH_HOST_UNKNOWN },
1097 { "isolated", ICMP_UNREACH_ISOLATED },
1098 { "net-prohib", ICMP_UNREACH_NET_PROHIB },
1099 { "host-prohib", ICMP_UNREACH_HOST_PROHIB },
1100 { "tosnet", ICMP_UNREACH_TOSNET },
1101 { "toshost", ICMP_UNREACH_TOSHOST },
1102 { "filter-prohib", ICMP_UNREACH_FILTER_PROHIB },
1103 { "host-precedence", ICMP_UNREACH_HOST_PRECEDENCE },
1104 { "precedence-cutoff", ICMP_UNREACH_PRECEDENCE_CUTOFF },
1109 fill_reject_code(u_short *codep, char *str)
1114 val = strtoul(str, &s, 0);
1115 if (s == str || *s != '\0' || val >= 0x100)
1116 val = match_token(icmpcodes, str);
1118 errx(EX_DATAERR, "unknown ICMP unreachable code ``%s''", str);
1124 print_reject_code(struct buf_pr *bp, uint16_t code)
1128 if ((s = match_value(icmpcodes, code)) != NULL)
1129 bprintf(bp, "unreach %s", s);
1131 bprintf(bp, "unreach %u", code);
1135 * Returns the number of bits set (from left) in a contiguous bitmask,
1136 * or -1 if the mask is not contiguous.
1137 * XXX this needs a proper fix.
1138 * This effectively works on masks in big-endian (network) format.
1139 * when compiled on little endian architectures.
1141 * First bit is bit 7 of the first byte -- note, for MAC addresses,
1142 * the first bit on the wire is bit 0 of the first byte.
1143 * len is the max length in bits.
1146 contigmask(const uint8_t *p, int len)
1150 for (i=0; i<len ; i++)
1151 if ( (p[i/8] & (1 << (7 - (i%8)))) == 0) /* first bit unset */
1153 for (n=i+1; n < len; n++)
1154 if ( (p[n/8] & (1 << (7 - (n%8)))) != 0)
1155 return -1; /* mask not contiguous */
1160 * print flags set/clear in the two bitmasks passed as parameters.
1161 * There is a specialized check for f_tcpflags.
1164 print_flags(struct buf_pr *bp, char const *name, const ipfw_insn *cmd,
1167 char const *comma = "";
1169 uint8_t set = cmd->arg1 & 0xff;
1170 uint8_t clear = (cmd->arg1 >> 8) & 0xff;
1172 if (list == f_tcpflags && set == TH_SYN && clear == TH_ACK) {
1173 bprintf(bp, " setup");
1177 bprintf(bp, " %s ", name);
1178 for (i=0; list[i].x != 0; i++) {
1179 if (set & list[i].x) {
1181 bprintf(bp, "%s%s", comma, list[i].s);
1184 if (clear & list[i].x) {
1185 clear &= ~list[i].x;
1186 bprintf(bp, "%s!%s", comma, list[i].s);
1194 * Print the ip address contained in a command.
1197 print_ip(struct buf_pr *bp, const struct format_opts *fo,
1198 const ipfw_insn_ip *cmd)
1200 struct hostent *he = NULL;
1201 const struct in_addr *ia;
1202 const uint32_t *a = ((const ipfw_insn_u32 *)cmd)->d;
1203 uint32_t len = F_LEN((const ipfw_insn *)cmd);
1207 if (cmd->o.opcode == O_IP_DST_LOOKUP && len > F_INSN_SIZE(ipfw_insn_u32)) {
1209 const char *arg = "<invalid>";
1211 if (d < sizeof(lookup_key)/sizeof(lookup_key[0]))
1212 arg = match_value(rule_options, lookup_key[d]);
1213 t = table_search_ctlv(fo->tstate,
1214 ((const ipfw_insn *)cmd)->arg1);
1215 bprintf(bp, "lookup %s %s", arg, t);
1218 if (cmd->o.opcode == O_IP_SRC_ME || cmd->o.opcode == O_IP_DST_ME) {
1222 if (cmd->o.opcode == O_IP_SRC_LOOKUP ||
1223 cmd->o.opcode == O_IP_DST_LOOKUP) {
1224 t = table_search_ctlv(fo->tstate,
1225 ((const ipfw_insn *)cmd)->arg1);
1226 bprintf(bp, "table(%s", t);
1227 if (len == F_INSN_SIZE(ipfw_insn_u32))
1228 bprintf(bp, ",%u", *a);
1232 if (cmd->o.opcode == O_IP_SRC_SET || cmd->o.opcode == O_IP_DST_SET) {
1233 const uint32_t *map = (const uint32_t *)&cmd->mask;
1234 struct in_addr addr;
1239 x = cmd->o.arg1 - 1;
1241 addr.s_addr = htonl(cmd->addr.s_addr);
1242 bprintf(bp, "%s/%d", inet_ntoa(addr),
1243 contigmask((uint8_t *)&x, 32));
1244 x = cmd->addr.s_addr;
1245 x &= 0xff; /* base */
1247 * Print bits and ranges.
1248 * Locate first bit set (i), then locate first bit unset (j).
1249 * If we have 3+ consecutive bits set, then print them as a
1250 * range, otherwise only print the initial bit and rescan.
1252 for (i=0; i < cmd->o.arg1; i++)
1253 if (map[i/32] & (1<<(i & 31))) {
1254 for (j=i+1; j < cmd->o.arg1; j++)
1255 if (!(map[ j/32] & (1<<(j & 31))))
1257 bprintf(bp, "%c%d", comma, i+x);
1258 if (j>i+2) { /* range has at least 3 elements */
1259 bprintf(bp, "-%d", j-1+x);
1268 * len == 2 indicates a single IP, whereas lists of 1 or more
1269 * addr/mask pairs have len = (2n+1). We convert len to n so we
1270 * use that to count the number of entries.
1272 for (len = len / 2; len > 0; len--, a += 2) {
1273 int mb = /* mask length */
1274 (cmd->o.opcode == O_IP_SRC || cmd->o.opcode == O_IP_DST) ?
1275 32 : contigmask((const uint8_t *)&(a[1]), 32);
1276 if (mb == 32 && g_co.do_resolv)
1277 he = gethostbyaddr((const char *)&(a[0]), sizeof(in_addr_t),
1279 if (he != NULL) /* resolved to name */
1280 bprintf(bp, "%s", he->h_name);
1281 else if (mb == 0) /* any */
1283 else { /* numeric IP followed by some kind of mask */
1284 ia = (const struct in_addr *)&a[0];
1285 bprintf(bp, "%s", inet_ntoa(*ia));
1287 ia = (const struct in_addr *)&a[1];
1288 bprintf(bp, ":%s", inet_ntoa(*ia));
1290 bprintf(bp, "/%d", mb);
1298 * prints a MAC address/mask pair
1301 format_mac(struct buf_pr *bp, const uint8_t *addr, const uint8_t *mask)
1303 int l = contigmask(mask, 48);
1306 bprintf(bp, " any");
1308 bprintf(bp, " %02x:%02x:%02x:%02x:%02x:%02x",
1309 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
1311 bprintf(bp, "&%02x:%02x:%02x:%02x:%02x:%02x",
1312 mask[0], mask[1], mask[2],
1313 mask[3], mask[4], mask[5]);
1315 bprintf(bp, "/%d", l);
1320 print_mac(struct buf_pr *bp, const ipfw_insn_mac *mac)
1323 bprintf(bp, " MAC");
1324 format_mac(bp, mac->addr, mac->mask);
1325 format_mac(bp, mac->addr + 6, mac->mask + 6);
1329 fill_icmptypes(ipfw_insn_u32 *cmd, char *av)
1338 type = strtoul(av, &av, 0);
1340 if (*av != ',' && *av != '\0')
1341 errx(EX_DATAERR, "invalid ICMP type");
1344 errx(EX_DATAERR, "ICMP type out of range");
1346 cmd->d[0] |= 1 << type;
1348 cmd->o.opcode = O_ICMPTYPE;
1349 cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32);
1353 print_icmptypes(struct buf_pr *bp, const ipfw_insn_u32 *cmd)
1358 bprintf(bp, " icmptypes");
1359 for (i = 0; i < 32; i++) {
1360 if ( (cmd->d[0] & (1 << (i))) == 0)
1362 bprintf(bp, "%c%d", sep, i);
1368 print_dscp(struct buf_pr *bp, const ipfw_insn_u32 *cmd)
1375 bprintf(bp, " dscp");
1378 if (*v & (1 << i)) {
1379 if ((code = match_value(f_ipdscp, i)) != NULL)
1380 bprintf(bp, "%c%s", sep, code);
1382 bprintf(bp, "%c%d", sep, i);
1386 if ((++i % 32) == 0)
1391 #define insntod(cmd, type) ((const ipfw_insn_ ## type *)(cmd))
1393 struct ip_fw_rule *rule;
1394 const ipfw_insn *eaction;
1397 #define HAVE_PROTO 0x0001
1398 #define HAVE_SRCIP 0x0002
1399 #define HAVE_DSTIP 0x0004
1400 #define HAVE_PROBE_STATE 0x0008
1406 init_show_state(struct show_state *state, struct ip_fw_rule *rule)
1409 state->printed = calloc(rule->cmd_len, sizeof(uint8_t));
1410 if (state->printed == NULL)
1413 state->eaction = NULL;
1416 state->or_block = 0;
1421 free_show_state(struct show_state *state)
1424 free(state->printed);
1428 is_printed_opcode(struct show_state *state, const ipfw_insn *cmd)
1431 return (state->printed[cmd - state->rule->cmd]);
1435 mark_printed(struct show_state *state, const ipfw_insn *cmd)
1438 state->printed[cmd - state->rule->cmd] = 1;
1442 print_limit_mask(struct buf_pr *bp, const ipfw_insn_limit *limit)
1444 struct _s_x *p = limit_masks;
1445 char const *comma = " ";
1448 for (x = limit->limit_mask; p->x != 0; p++) {
1449 if ((x & p->x) == p->x) {
1451 bprintf(bp, "%s%s", comma, p->s);
1455 bprint_uint_arg(bp, " ", limit->conn_limit);
1459 print_instruction(struct buf_pr *bp, const struct format_opts *fo,
1460 struct show_state *state, const ipfw_insn *cmd)
1462 struct protoent *pe;
1468 if (is_printed_opcode(state, cmd))
1470 if ((cmd->len & F_OR) != 0 && state->or_block == 0)
1472 if (cmd->opcode != O_IN && (cmd->len & F_NOT) != 0)
1473 bprintf(bp, " not");
1475 switch (cmd->opcode) {
1477 d = 1.0 * insntod(cmd, u32)->d[0] / 0x7fffffff;
1478 bprintf(bp, "prob %f ", d);
1480 case O_PROBE_STATE: /* no need to print anything here */
1481 state->flags |= HAVE_PROBE_STATE;
1484 case O_IP_SRC_LOOKUP:
1488 if (state->flags & HAVE_SRCIP)
1489 bprintf(bp, " src-ip");
1490 print_ip(bp, fo, insntod(cmd, ip));
1493 case O_IP_DST_LOOKUP:
1497 if (state->flags & HAVE_DSTIP)
1498 bprintf(bp, " dst-ip");
1499 print_ip(bp, fo, insntod(cmd, ip));
1502 case O_IP6_SRC_MASK:
1504 if (state->flags & HAVE_SRCIP)
1505 bprintf(bp, " src-ip6");
1506 print_ip6(bp, insntod(cmd, ip6));
1509 case O_IP6_DST_MASK:
1511 if (state->flags & HAVE_DSTIP)
1512 bprintf(bp, " dst-ip6");
1513 print_ip6(bp, insntod(cmd, ip6));
1516 print_flow6id(bp, insntod(cmd, u32));
1520 print_newports(bp, insntod(cmd, u16), state->proto,
1521 (state->flags & (HAVE_SRCIP | HAVE_DSTIP)) ==
1522 (HAVE_SRCIP | HAVE_DSTIP) ? cmd->opcode: 0);
1525 pe = getprotobynumber(cmd->arg1);
1526 if (state->flags & HAVE_PROTO)
1527 bprintf(bp, " proto");
1529 bprintf(bp, " %s", pe->p_name);
1531 bprintf(bp, " %u", cmd->arg1);
1532 state->proto = cmd->arg1;
1535 print_mac(bp, insntod(cmd, mac));
1538 print_newports(bp, insntod(cmd, u16),
1539 IPPROTO_ETHERTYPE, cmd->opcode);
1542 print_flags(bp, "frag", cmd, f_ipoff);
1545 bprintf(bp, " fib %u", cmd->arg1);
1548 bprintf(bp, " sockarg");
1551 bprintf(bp, cmd->len & F_NOT ? " out" : " in");
1554 switch (cmd->arg1) {
1556 bprintf(bp, " diverted");
1559 bprintf(bp, " diverted-output");
1562 bprintf(bp, " diverted-loopback");
1565 bprintf(bp, " diverted-?<%u>", cmd->arg1);
1570 bprintf(bp, " layer2");
1575 if (cmd->opcode == O_XMIT)
1577 else if (cmd->opcode == O_RECV)
1579 else /* if (cmd->opcode == O_VIA) */
1581 switch (insntod(cmd, if)->name[0]) {
1583 bprintf(bp, " %s %s", s,
1584 inet_ntoa(insntod(cmd, if)->p.ip));
1587 bprintf(bp, " %s table(%s)", s,
1588 table_search_ctlv(fo->tstate,
1589 insntod(cmd, if)->p.kidx));
1592 bprintf(bp, " %s %s", s,
1593 insntod(cmd, if)->name);
1596 case O_IP_FLOW_LOOKUP:
1597 s = table_search_ctlv(fo->tstate, cmd->arg1);
1598 bprintf(bp, " flow table(%s", s);
1599 if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32))
1600 bprintf(bp, ",%u", insntod(cmd, u32)->d[0]);
1609 if (F_LEN(cmd) == 1) {
1610 switch (cmd->opcode) {
1633 bprintf(bp, " %s %u", s, cmd->arg1);
1635 print_newports(bp, insntod(cmd, u16), 0,
1639 bprintf(bp, " ipver %u", cmd->arg1);
1641 case O_IPPRECEDENCE:
1642 bprintf(bp, " ipprecedence %u", cmd->arg1 >> 5);
1645 print_dscp(bp, insntod(cmd, u32));
1648 print_flags(bp, "ipoptions", cmd, f_ipopts);
1651 print_flags(bp, "iptos", cmd, f_iptos);
1654 print_icmptypes(bp, insntod(cmd, u32));
1657 bprintf(bp, " established");
1660 print_flags(bp, "tcpflags", cmd, f_tcpflags);
1663 print_flags(bp, "tcpoptions", cmd, f_tcpopts);
1666 bprintf(bp, " tcpack %d",
1667 ntohl(insntod(cmd, u32)->d[0]));
1670 bprintf(bp, " tcpseq %d",
1671 ntohl(insntod(cmd, u32)->d[0]));
1674 pwd = getpwuid(insntod(cmd, u32)->d[0]);
1676 bprintf(bp, " uid %s", pwd->pw_name);
1678 bprintf(bp, " uid %u",
1679 insntod(cmd, u32)->d[0]);
1682 grp = getgrgid(insntod(cmd, u32)->d[0]);
1684 bprintf(bp, " gid %s", grp->gr_name);
1686 bprintf(bp, " gid %u",
1687 insntod(cmd, u32)->d[0]);
1690 bprintf(bp, " jail %d", insntod(cmd, u32)->d[0]);
1693 bprintf(bp, " verrevpath");
1696 bprintf(bp, " versrcreach");
1699 bprintf(bp, " antispoof");
1702 bprintf(bp, " ipsec");
1705 bprintf(bp, " // %s", (const char *)(cmd + 1));
1708 if (state->flags & HAVE_PROBE_STATE)
1709 bprintf(bp, " keep-state");
1711 bprintf(bp, " record-state");
1713 object_search_ctlv(fo->tstate, cmd->arg1,
1714 IPFW_TLV_STATE_NAME));
1717 if (state->flags & HAVE_PROBE_STATE)
1718 bprintf(bp, " limit");
1720 bprintf(bp, " set-limit");
1721 print_limit_mask(bp, insntod(cmd, limit));
1723 object_search_ctlv(fo->tstate, cmd->arg1,
1724 IPFW_TLV_STATE_NAME));
1727 if (state->flags & HAVE_PROTO)
1728 bprintf(bp, " proto");
1729 bprintf(bp, " ip6");
1732 if (state->flags & HAVE_PROTO)
1733 bprintf(bp, " proto");
1734 bprintf(bp, " ip4");
1737 print_icmp6types(bp, insntod(cmd, u32));
1740 print_ext6hdr(bp, cmd);
1743 if (F_LEN(cmd) == 1)
1744 bprint_uint_arg(bp, " tagged ", cmd->arg1);
1746 print_newports(bp, insntod(cmd, u16),
1750 bprintf(bp, " defer-immediate-action");
1753 bprintf(bp, " [opcode %d len %d]", cmd->opcode,
1756 if (cmd->len & F_OR) {
1758 state->or_block = 1;
1759 } else if (state->or_block != 0) {
1761 state->or_block = 0;
1763 mark_printed(state, cmd);
1769 print_opcode(struct buf_pr *bp, struct format_opts *fo,
1770 struct show_state *state, int opcode)
1775 for (l = state->rule->act_ofs, cmd = state->rule->cmd;
1776 l > 0; l -= F_LEN(cmd), cmd += F_LEN(cmd)) {
1777 /* We use zero opcode to print the rest of options */
1778 if (opcode >= 0 && cmd->opcode != opcode)
1781 * Skip O_NOP, when we printing the rest
1782 * of options, it will be handled separately.
1784 if (cmd->opcode == O_NOP && opcode != O_NOP)
1786 if (!print_instruction(bp, fo, state, cmd))
1794 print_fwd(struct buf_pr *bp, const ipfw_insn *cmd)
1796 char buf[INET6_ADDRSTRLEN + IF_NAMESIZE + 2];
1797 const ipfw_insn_sa6 *sa6;
1798 const ipfw_insn_sa *sa;
1801 if (cmd->opcode == O_FORWARD_IP) {
1802 sa = insntod(cmd, sa);
1803 port = sa->sa.sin_port;
1804 if (sa->sa.sin_addr.s_addr == INADDR_ANY)
1805 bprintf(bp, "fwd tablearg");
1807 bprintf(bp, "fwd %s", inet_ntoa(sa->sa.sin_addr));
1809 sa6 = insntod(cmd, sa6);
1810 port = sa6->sa.sin6_port;
1811 bprintf(bp, "fwd ");
1812 if (getnameinfo((const struct sockaddr *)&sa6->sa,
1813 sizeof(struct sockaddr_in6), buf, sizeof(buf), NULL, 0,
1814 NI_NUMERICHOST) == 0)
1815 bprintf(bp, "%s", buf);
1818 bprintf(bp, ",%u", port);
1822 print_action_instruction(struct buf_pr *bp, const struct format_opts *fo,
1823 struct show_state *state, const ipfw_insn *cmd)
1827 if (is_printed_opcode(state, cmd))
1829 switch (cmd->opcode) {
1831 bprintf(bp, "check-state");
1833 s = object_search_ctlv(fo->tstate, cmd->arg1,
1834 IPFW_TLV_STATE_NAME);
1837 bprintf(bp, " :%s", s ? s: "any");
1840 bprintf(bp, "allow");
1843 bprintf(bp, "count");
1846 bprintf(bp, "deny");
1849 if (cmd->arg1 == ICMP_REJECT_RST)
1850 bprintf(bp, "reset");
1851 else if (cmd->arg1 == ICMP_REJECT_ABORT)
1852 bprintf(bp, "abort");
1853 else if (cmd->arg1 == ICMP_UNREACH_HOST)
1854 bprintf(bp, "reject");
1856 print_reject_code(bp, cmd->arg1);
1859 if (cmd->arg1 == ICMP6_UNREACH_RST)
1860 bprintf(bp, "reset6");
1861 else if (cmd->arg1 == ICMP6_UNREACH_ABORT)
1862 bprintf(bp, "abort6");
1864 print_unreach6_code(bp, cmd->arg1);
1867 bprint_uint_arg(bp, "skipto ", cmd->arg1);
1870 bprint_uint_arg(bp, "pipe ", cmd->arg1);
1873 bprint_uint_arg(bp, "queue ", cmd->arg1);
1876 bprint_uint_arg(bp, "divert ", cmd->arg1);
1879 bprint_uint_arg(bp, "tee ", cmd->arg1);
1882 bprint_uint_arg(bp, "netgraph ", cmd->arg1);
1885 bprint_uint_arg(bp, "ngtee ", cmd->arg1);
1892 if (insntod(cmd, log)->max_log > 0)
1893 bprintf(bp, " log logamount %d",
1894 insntod(cmd, log)->max_log);
1896 bprintf(bp, " log");
1900 print_altq_cmd(bp, insntod(cmd, altq));
1904 bprint_uint_arg(bp, cmd->len & F_NOT ? " untag ":
1905 " tag ", cmd->arg1);
1908 if (cmd->arg1 != IP_FW_NAT44_GLOBAL)
1909 bprint_uint_arg(bp, "nat ", cmd->arg1);
1911 bprintf(bp, "nat global");
1914 if (cmd->arg1 == IP_FW_TARG)
1915 bprint_uint_arg(bp, "setfib ", cmd->arg1);
1917 bprintf(bp, "setfib %u", cmd->arg1 & 0x7FFF);
1919 case O_EXTERNAL_ACTION:
1921 * The external action can consists of two following
1922 * each other opcodes - O_EXTERNAL_ACTION and
1923 * O_EXTERNAL_INSTANCE. The first contains the ID of
1924 * name of external action. The second contains the ID
1925 * of name of external action instance.
1926 * NOTE: in case when external action has no named
1927 * instances support, the second opcode isn't needed.
1929 state->eaction = cmd;
1930 s = object_search_ctlv(fo->tstate, cmd->arg1,
1932 if (match_token(rule_eactions, s) != -1)
1933 bprintf(bp, "%s", s);
1935 bprintf(bp, "eaction %s", s);
1937 case O_EXTERNAL_INSTANCE:
1938 if (state->eaction == NULL)
1941 * XXX: we need to teach ipfw(9) to rewrite opcodes
1942 * in the user buffer on rule addition. When we add
1943 * the rule, we specify zero TLV type for
1944 * O_EXTERNAL_INSTANCE object. To show correct
1945 * rule after `ipfw add` we need to search instance
1946 * name with zero type. But when we do `ipfw show`
1947 * we calculate TLV type using IPFW_TLV_EACTION_NAME()
1950 s = object_search_ctlv(fo->tstate, cmd->arg1, 0);
1952 s = object_search_ctlv(fo->tstate,
1953 cmd->arg1, IPFW_TLV_EACTION_NAME(
1954 state->eaction->arg1));
1955 bprintf(bp, " %s", s);
1957 case O_EXTERNAL_DATA:
1958 if (state->eaction == NULL)
1961 * Currently we support data formatting only for
1962 * external data with datalen u16. For unknown data
1963 * print its size in bytes.
1965 if (cmd->len == F_INSN_SIZE(ipfw_insn))
1966 bprintf(bp, " %u", cmd->arg1);
1968 bprintf(bp, " %ubytes",
1969 cmd->len * sizeof(uint32_t));
1972 if (cmd->arg1 == IP_FW_TARG) {
1973 bprintf(bp, "setdscp tablearg");
1976 s = match_value(f_ipdscp, cmd->arg1 & 0x3F);
1978 bprintf(bp, "setdscp %s", s);
1980 bprintf(bp, "setdscp %u", cmd->arg1 & 0x3F);
1983 bprintf(bp, "reass");
1986 if (cmd->len & F_NOT)
1987 bprintf(bp, "return");
1989 bprint_uint_arg(bp, "call ", cmd->arg1);
1992 bprintf(bp, "** unrecognized action %d len %d ",
1993 cmd->opcode, cmd->len);
1995 mark_printed(state, cmd);
2002 print_action(struct buf_pr *bp, struct format_opts *fo,
2003 struct show_state *state, uint8_t opcode)
2008 for (l = state->rule->cmd_len - state->rule->act_ofs,
2009 cmd = ACTION_PTR(state->rule); l > 0;
2010 l -= F_LEN(cmd), cmd += F_LEN(cmd)) {
2011 if (cmd->opcode != opcode)
2013 if (!print_action_instruction(bp, fo, state, cmd))
2021 print_proto(struct buf_pr *bp, struct format_opts *fo,
2022 struct show_state *state)
2025 int l, proto, ip4, ip6;
2027 /* Count all O_PROTO, O_IP4, O_IP6 instructions. */
2028 proto = ip4 = ip6 = 0;
2029 for (l = state->rule->act_ofs, cmd = state->rule->cmd;
2030 l > 0; l -= F_LEN(cmd), cmd += F_LEN(cmd)) {
2031 switch (cmd->opcode) {
2037 if (cmd->len & F_OR)
2042 if (cmd->len & F_OR)
2049 if (proto == 0 && ip4 == 0 && ip6 == 0) {
2050 state->proto = IPPROTO_IP;
2051 state->flags |= HAVE_PROTO;
2055 /* To handle the case { ip4 or ip6 }, print opcode with F_OR first */
2058 cmd = print_opcode(bp, fo, state, ip4 > ip6 ? O_IP4: O_IP6);
2059 if (cmd != NULL && (cmd->len & F_OR))
2060 cmd = print_opcode(bp, fo, state, ip4 > ip6 ? O_IP6: O_IP4);
2061 if (cmd == NULL || (cmd->len & F_OR))
2062 for (l = proto; l > 0; l--) {
2063 cmd = print_opcode(bp, fo, state, O_PROTO);
2064 if (cmd == NULL || (cmd->len & F_OR) == 0)
2067 /* Initialize proto, it is used by print_newports() */
2068 state->flags |= HAVE_PROTO;
2069 if (state->proto == 0 && ip6 != 0)
2070 state->proto = IPPROTO_IPV6;
2074 match_opcode(int opcode, const int opcodes[], size_t nops)
2078 for (i = 0; i < nops; i++)
2079 if (opcode == opcodes[i])
2085 print_address(struct buf_pr *bp, struct format_opts *fo,
2086 struct show_state *state, const int opcodes[], size_t nops, int portop,
2090 int count, l, portcnt, pf;
2092 count = portcnt = 0;
2093 for (l = state->rule->act_ofs, cmd = state->rule->cmd;
2094 l > 0; l -= F_LEN(cmd), cmd += F_LEN(cmd)) {
2095 if (match_opcode(cmd->opcode, opcodes, nops))
2097 else if (cmd->opcode == portop)
2101 bprintf(bp, " any");
2102 for (l = state->rule->act_ofs, cmd = state->rule->cmd;
2103 l > 0 && count > 0; l -= F_LEN(cmd), cmd += F_LEN(cmd)) {
2104 if (!match_opcode(cmd->opcode, opcodes, nops))
2106 print_instruction(bp, fo, state, cmd);
2107 if ((cmd->len & F_OR) == 0)
2112 * If several O_IP_?PORT opcodes specified, leave them to the
2116 for (l = state->rule->act_ofs, cmd = state->rule->cmd, pf = 0;
2117 l > 0; l -= F_LEN(cmd), cmd += F_LEN(cmd)) {
2118 if (cmd->opcode != portop) {
2119 pf = (cmd->len & F_OR);
2122 /* Print opcode iff it is not in OR block. */
2123 if (pf == 0 && (cmd->len & F_OR) == 0)
2124 print_instruction(bp, fo, state, cmd);
2128 state->flags |= flag;
2131 static const int action_opcodes[] = {
2132 O_CHECK_STATE, O_ACCEPT, O_COUNT, O_DENY, O_REJECT,
2133 O_UNREACH6, O_SKIPTO, O_PIPE, O_QUEUE, O_DIVERT, O_TEE,
2134 O_NETGRAPH, O_NGTEE, O_FORWARD_IP, O_FORWARD_IP6, O_NAT,
2135 O_SETFIB, O_SETDSCP, O_REASS, O_CALLRETURN,
2136 /* keep the following opcodes at the end of the list */
2137 O_EXTERNAL_ACTION, O_EXTERNAL_INSTANCE, O_EXTERNAL_DATA
2140 static const int modifier_opcodes[] = {
2141 O_LOG, O_ALTQ, O_TAG
2144 static const int src_opcodes[] = {
2145 O_IP_SRC, O_IP_SRC_LOOKUP, O_IP_SRC_MASK, O_IP_SRC_ME,
2146 O_IP_SRC_SET, O_IP6_SRC, O_IP6_SRC_MASK, O_IP6_SRC_ME
2149 static const int dst_opcodes[] = {
2150 O_IP_DST, O_IP_DST_LOOKUP, O_IP_DST_MASK, O_IP_DST_ME,
2151 O_IP_DST_SET, O_IP6_DST, O_IP6_DST_MASK, O_IP6_DST_ME
2155 show_static_rule(struct cmdline_opts *co, struct format_opts *fo,
2156 struct buf_pr *bp, struct ip_fw_rule *rule, struct ip_fw_bcounter *cntr)
2158 static int twidth = 0;
2159 struct show_state state;
2163 /* Print # DISABLED or skip the rule */
2164 if ((fo->set_mask & (1 << rule->set)) == 0) {
2169 bprintf(bp, "# DISABLED ");
2171 if (init_show_state(&state, rule) != 0) {
2172 warn("init_show_state() failed");
2175 bprintf(bp, "%05u ", rule->rulenum);
2177 /* only if counters are available */
2179 /* Print counters if enabled */
2180 if (fo->pcwidth > 0 || fo->bcwidth > 0) {
2181 pr_u64(bp, &cntr->pcnt, fo->pcwidth);
2182 pr_u64(bp, &cntr->bcnt, fo->bcwidth);
2185 /* Print timestamp */
2186 if (co->do_time == TIMESTAMP_NUMERIC)
2187 bprintf(bp, "%10u ", cntr->timestamp);
2188 else if (co->do_time == TIMESTAMP_STRING) {
2190 time_t t = (time_t)0;
2193 strcpy(timestr, ctime(&t));
2194 *strchr(timestr, '\n') = '\0';
2195 twidth = strlen(timestr);
2197 if (cntr->timestamp > 0) {
2198 t = _long_to_time(cntr->timestamp);
2200 strcpy(timestr, ctime(&t));
2201 *strchr(timestr, '\n') = '\0';
2202 bprintf(bp, "%s ", timestr);
2204 bprintf(bp, "%*s ", twidth, "");
2209 /* Print set number */
2211 bprintf(bp, "set %d ", rule->set);
2213 /* Print the optional "match probability" */
2214 cmd = print_opcode(bp, fo, &state, O_PROB);
2215 /* Print rule action */
2216 for (i = 0; i < nitems(action_opcodes); i++) {
2217 cmd = print_action(bp, fo, &state, action_opcodes[i]);
2220 /* Handle special cases */
2221 switch (cmd->opcode) {
2224 case O_EXTERNAL_ACTION:
2225 case O_EXTERNAL_INSTANCE:
2226 /* External action can have several instructions */
2231 /* Print rule modifiers */
2232 for (i = 0; i < nitems(modifier_opcodes); i++)
2233 print_action(bp, fo, &state, modifier_opcodes[i]);
2237 if (co->comment_only != 0)
2240 if (rule->flags & IPFW_RULE_JUSTOPTS) {
2241 state.flags |= HAVE_PROTO | HAVE_SRCIP | HAVE_DSTIP;
2245 print_proto(bp, fo, &state);
2246 if (co->do_compact != 0 && (rule->flags & IPFW_RULE_NOOPT))
2250 bprintf(bp, " from");
2251 print_address(bp, fo, &state, src_opcodes, nitems(src_opcodes),
2252 O_IP_SRCPORT, HAVE_SRCIP);
2254 /* Print destination */
2256 print_address(bp, fo, &state, dst_opcodes, nitems(dst_opcodes),
2257 O_IP_DSTPORT, HAVE_DSTIP);
2260 /* Print the rest of options */
2261 while (print_opcode(bp, fo, &state, -1))
2264 /* Print comment at the end */
2265 cmd = print_opcode(bp, fo, &state, O_NOP);
2266 if (co->comment_only != 0 && cmd == NULL)
2267 bprintf(bp, " // ...");
2269 free_show_state(&state);
2273 show_dyn_state(struct cmdline_opts *co, struct format_opts *fo,
2274 struct buf_pr *bp, ipfw_dyn_rule *d)
2276 struct protoent *pe;
2279 char buf[INET6_ADDRSTRLEN];
2281 if (d->expire == 0 && d->dyn_type != O_LIMIT_PARENT)
2284 bcopy(&d->rule, &rulenum, sizeof(rulenum));
2285 bprintf(bp, "%05d", rulenum);
2286 if (fo->pcwidth > 0 || fo->bcwidth > 0) {
2288 pr_u64(bp, &d->pcnt, fo->pcwidth);
2289 pr_u64(bp, &d->bcnt, fo->bcwidth);
2290 bprintf(bp, "(%ds)", d->expire);
2292 switch (d->dyn_type) {
2293 case O_LIMIT_PARENT:
2294 bprintf(bp, " PARENT %d", d->count);
2297 bprintf(bp, " LIMIT");
2299 case O_KEEP_STATE: /* bidir, no mask */
2300 bprintf(bp, " STATE");
2304 if ((pe = getprotobynumber(d->id.proto)) != NULL)
2305 bprintf(bp, " %s", pe->p_name);
2307 bprintf(bp, " proto %u", d->id.proto);
2309 if (d->id.addr_type == 4) {
2310 a.s_addr = htonl(d->id.src_ip);
2311 bprintf(bp, " %s %d", inet_ntoa(a), d->id.src_port);
2313 a.s_addr = htonl(d->id.dst_ip);
2314 bprintf(bp, " <-> %s %d", inet_ntoa(a), d->id.dst_port);
2315 } else if (d->id.addr_type == 6) {
2316 bprintf(bp, " %s %d", inet_ntop(AF_INET6, &d->id.src_ip6, buf,
2317 sizeof(buf)), d->id.src_port);
2318 bprintf(bp, " <-> %s %d", inet_ntop(AF_INET6, &d->id.dst_ip6,
2319 buf, sizeof(buf)), d->id.dst_port);
2321 bprintf(bp, " UNKNOWN <-> UNKNOWN");
2323 bprintf(bp, " :%s", object_search_ctlv(fo->tstate,
2324 d->kidx, IPFW_TLV_STATE_NAME));
2326 #define BOTH_SYN (TH_SYN | (TH_SYN << 8))
2327 #define BOTH_FIN (TH_FIN | (TH_FIN << 8))
2329 bprintf(bp, " state 0x%08x%s", d->state,
2330 d->state ? " ": ",");
2331 if (d->state & IPFW_DYN_ORPHANED)
2332 bprintf(bp, "ORPHANED,");
2333 if ((d->state & BOTH_SYN) == BOTH_SYN)
2334 bprintf(bp, "BOTH_SYN,");
2336 if (d->state & TH_SYN)
2337 bprintf(bp, "F_SYN,");
2338 if (d->state & (TH_SYN << 8))
2339 bprintf(bp, "R_SYN,");
2341 if ((d->state & BOTH_FIN) == BOTH_FIN)
2342 bprintf(bp, "BOTH_FIN,");
2344 if (d->state & TH_FIN)
2345 bprintf(bp, "F_FIN,");
2346 if (d->state & (TH_FIN << 8))
2347 bprintf(bp, "R_FIN,");
2349 bprintf(bp, " f_ack 0x%x, r_ack 0x%x", d->ack_fwd,
2355 do_range_cmd(int cmd, ipfw_range_tlv *rt)
2357 ipfw_range_header rh;
2360 memset(&rh, 0, sizeof(rh));
2361 memcpy(&rh.range, rt, sizeof(*rt));
2362 rh.range.head.length = sizeof(*rt);
2363 rh.range.head.type = IPFW_TLV_RANGE;
2366 if (do_get3(cmd, &rh.opheader, &sz) != 0)
2368 /* Save number of matched objects */
2369 rt->new_set = rh.range.new_set;
2374 * This one handles all set-related commands
2375 * ipfw set { show | enable | disable }
2377 * ipfw set move X to Y
2378 * ipfw set move rule X to Y
2381 ipfw_sets_handler(char *av[])
2392 memset(&rt, 0, sizeof(rt));
2395 errx(EX_USAGE, "set needs command");
2396 if (_substrcmp(*av, "show") == 0) {
2397 struct format_opts fo;
2398 ipfw_cfg_lheader *cfg;
2400 memset(&fo, 0, sizeof(fo));
2401 if (ipfw_get_config(&g_co, &fo, &cfg, &size) != 0)
2402 err(EX_OSERR, "requesting config failed");
2404 for (i = 0, msg = "disable"; i < RESVD_SET; i++)
2405 if ((cfg->set_mask & (1<<i)) == 0) {
2406 printf("%s %d", msg, i);
2409 msg = (cfg->set_mask != (uint32_t)-1) ? " enable" : "enable";
2410 for (i = 0; i < RESVD_SET; i++)
2411 if ((cfg->set_mask & (1<<i)) != 0) {
2412 printf("%s %d", msg, i);
2417 } else if (_substrcmp(*av, "swap") == 0) {
2419 if ( av[0] == NULL || av[1] == NULL )
2420 errx(EX_USAGE, "set swap needs 2 set numbers\n");
2421 rt.set = atoi(av[0]);
2422 rt.new_set = atoi(av[1]);
2423 if (!isdigit(*(av[0])) || rt.set > RESVD_SET)
2424 errx(EX_DATAERR, "invalid set number %s\n", av[0]);
2425 if (!isdigit(*(av[1])) || rt.new_set > RESVD_SET)
2426 errx(EX_DATAERR, "invalid set number %s\n", av[1]);
2427 i = do_range_cmd(IP_FW_SET_SWAP, &rt);
2428 } else if (_substrcmp(*av, "move") == 0) {
2430 if (av[0] && _substrcmp(*av, "rule") == 0) {
2431 rt.flags = IPFW_RCFLAG_RANGE; /* move rules to new set */
2435 cmd = IP_FW_SET_MOVE; /* Move set to new one */
2436 if (av[0] == NULL || av[1] == NULL || av[2] == NULL ||
2437 av[3] != NULL || _substrcmp(av[1], "to") != 0)
2438 errx(EX_USAGE, "syntax: set move [rule] X to Y\n");
2439 rulenum = atoi(av[0]);
2440 rt.new_set = atoi(av[2]);
2441 if (cmd == IP_FW_XMOVE) {
2442 rt.start_rule = rulenum;
2443 rt.end_rule = rulenum;
2446 rt.new_set = atoi(av[2]);
2447 if (!isdigit(*(av[0])) || (cmd == 3 && rt.set > RESVD_SET) ||
2448 (cmd == 2 && rt.start_rule == IPFW_DEFAULT_RULE) )
2449 errx(EX_DATAERR, "invalid source number %s\n", av[0]);
2450 if (!isdigit(*(av[2])) || rt.new_set > RESVD_SET)
2451 errx(EX_DATAERR, "invalid dest. set %s\n", av[1]);
2452 i = do_range_cmd(cmd, &rt);
2454 err(EX_OSERR, "failed to move %s",
2455 cmd == IP_FW_SET_MOVE ? "set": "rule");
2456 } else if (_substrcmp(*av, "disable") == 0 ||
2457 _substrcmp(*av, "enable") == 0 ) {
2458 int which = _substrcmp(*av, "enable") == 0 ? 1 : 0;
2461 masks[0] = masks[1] = 0;
2464 if (isdigit(**av)) {
2466 if (i < 0 || i > RESVD_SET)
2468 "invalid set number %d\n", i);
2469 masks[which] |= (1<<i);
2470 } else if (_substrcmp(*av, "disable") == 0)
2472 else if (_substrcmp(*av, "enable") == 0)
2476 "invalid set command %s\n", *av);
2479 if ( (masks[0] & masks[1]) != 0 )
2481 "cannot enable and disable the same set\n");
2484 rt.new_set = masks[1];
2485 i = do_range_cmd(IP_FW_SET_ENABLE, &rt);
2487 warn("set enable/disable: setsockopt(IP_FW_SET_ENABLE)");
2489 errx(EX_USAGE, "invalid set command %s\n", *av);
2493 ipfw_sysctl_handler(char *av[], int which)
2497 if (av[0] == NULL) {
2498 warnx("missing keyword to enable/disable\n");
2499 } else if (_substrcmp(*av, "firewall") == 0) {
2500 sysctlbyname("net.inet.ip.fw.enable", NULL, 0,
2501 &which, sizeof(which));
2502 sysctlbyname("net.inet6.ip6.fw.enable", NULL, 0,
2503 &which, sizeof(which));
2504 } else if (_substrcmp(*av, "one_pass") == 0) {
2505 sysctlbyname("net.inet.ip.fw.one_pass", NULL, 0,
2506 &which, sizeof(which));
2507 } else if (_substrcmp(*av, "debug") == 0) {
2508 sysctlbyname("net.inet.ip.fw.debug", NULL, 0,
2509 &which, sizeof(which));
2510 } else if (_substrcmp(*av, "verbose") == 0) {
2511 sysctlbyname("net.inet.ip.fw.verbose", NULL, 0,
2512 &which, sizeof(which));
2513 } else if (_substrcmp(*av, "dyn_keepalive") == 0) {
2514 sysctlbyname("net.inet.ip.fw.dyn_keepalive", NULL, 0,
2515 &which, sizeof(which));
2517 } else if (_substrcmp(*av, "altq") == 0) {
2518 altq_set_enabled(which);
2521 warnx("unrecognize enable/disable keyword: %s\n", *av);
2525 typedef void state_cb(struct cmdline_opts *co, struct format_opts *fo,
2526 void *arg, void *state);
2529 prepare_format_dyn(struct cmdline_opts *co, struct format_opts *fo,
2530 void *arg __unused, void *_state)
2536 d = (ipfw_dyn_rule *)_state;
2537 /* Count _ALL_ states */
2540 if (fo->show_counters == 0)
2544 /* skip states from another set */
2545 bcopy((char *)&d->rule + sizeof(uint16_t), &set,
2547 if (set != co->use_set - 1)
2551 width = pr_u64(NULL, &d->pcnt, 0);
2552 if (width > fo->pcwidth)
2553 fo->pcwidth = width;
2555 width = pr_u64(NULL, &d->bcnt, 0);
2556 if (width > fo->bcwidth)
2557 fo->bcwidth = width;
2561 foreach_state(struct cmdline_opts *co, struct format_opts *fo,
2562 caddr_t base, size_t sz, state_cb dyn_bc, void *dyn_arg)
2568 ipfw_obj_ctlv *ctlv;
2574 ctlv = (ipfw_obj_ctlv *)base;
2575 switch (ctlv->head.type) {
2576 case IPFW_TLV_DYNSTATE_LIST:
2577 base += sizeof(*ctlv);
2578 sz -= sizeof(*ctlv);
2579 ttype = IPFW_TLV_DYN_ENT;
2588 tlv = (ipfw_obj_tlv *)base;
2589 if (tlv->type != ttype)
2592 fptr(co, fo, farg, tlv + 1);
2594 base += tlv->length;
2602 prepare_format_opts(struct cmdline_opts *co, struct format_opts *fo,
2603 ipfw_obj_tlv *rtlv, int rcnt, caddr_t dynbase, size_t dynsz)
2605 int bcwidth, pcwidth, width;
2607 struct ip_fw_bcounter *cntr;
2608 struct ip_fw_rule *r;
2612 if (fo->show_counters != 0) {
2613 for (n = 0; n < rcnt; n++,
2614 rtlv = (ipfw_obj_tlv *)((caddr_t)rtlv + rtlv->length)) {
2615 cntr = (struct ip_fw_bcounter *)(rtlv + 1);
2616 r = (struct ip_fw_rule *)((caddr_t)cntr + cntr->size);
2617 /* skip rules from another set */
2618 if (co->use_set && r->set != co->use_set - 1)
2621 /* packet counter */
2622 width = pr_u64(NULL, &cntr->pcnt, 0);
2623 if (width > pcwidth)
2627 width = pr_u64(NULL, &cntr->bcnt, 0);
2628 if (width > bcwidth)
2632 fo->bcwidth = bcwidth;
2633 fo->pcwidth = pcwidth;
2636 if (co->do_dynamic && dynsz > 0)
2637 foreach_state(co, fo, dynbase, dynsz, prepare_format_dyn, NULL);
2641 list_static_range(struct cmdline_opts *co, struct format_opts *fo,
2642 struct buf_pr *bp, ipfw_obj_tlv *rtlv, int rcnt)
2645 struct ip_fw_rule *r;
2646 struct ip_fw_bcounter *cntr;
2649 for (n = seen = 0; n < rcnt; n++,
2650 rtlv = (ipfw_obj_tlv *)((caddr_t)rtlv + rtlv->length)) {
2652 if ((fo->show_counters | fo->show_time) != 0) {
2653 cntr = (struct ip_fw_bcounter *)(rtlv + 1);
2654 r = (struct ip_fw_rule *)((caddr_t)cntr + cntr->size);
2657 r = (struct ip_fw_rule *)(rtlv + 1);
2659 if (r->rulenum > fo->last)
2661 if (co->use_set && r->set != co->use_set - 1)
2663 if (r->rulenum >= fo->first && r->rulenum <= fo->last) {
2664 show_static_rule(co, fo, bp, r, cntr);
2665 printf("%s", bp->buf);
2676 list_dyn_state(struct cmdline_opts *co, struct format_opts *fo,
2677 void *_arg, void *_state)
2684 d = (ipfw_dyn_rule *)_state;
2685 bp = (struct buf_pr *)_arg;
2687 bcopy(&d->rule, &rulenum, sizeof(rulenum));
2688 if (rulenum > fo->last)
2691 bcopy((char *)&d->rule + sizeof(uint16_t),
2692 &set, sizeof(uint8_t));
2693 if (set != co->use_set - 1)
2696 if (rulenum >= fo->first) {
2697 show_dyn_state(co, fo, bp, d);
2698 printf("%s\n", bp->buf);
2704 list_dyn_range(struct cmdline_opts *co, struct format_opts *fo,
2705 struct buf_pr *bp, caddr_t base, size_t sz)
2708 sz = foreach_state(co, fo, base, sz, list_dyn_state, bp);
2713 ipfw_list(int ac, char *av[], int show_counters)
2715 ipfw_cfg_lheader *cfg;
2716 struct format_opts sfo;
2724 if (g_co.test_only) {
2725 fprintf(stderr, "Testing only, list disabled\n");
2729 dummynet_list(ac, av, show_counters);
2735 memset(&sfo, 0, sizeof(sfo));
2737 /* Determine rule range to request */
2739 for (lac = ac, lav = av; lac != 0; lac--) {
2740 rnum = strtoul(*lav++, &endptr, 10);
2741 if (sfo.first == 0 || rnum < sfo.first)
2745 rnum = strtoul(endptr + 1, &endptr, 10);
2746 if (sfo.last == 0 || rnum > sfo.last)
2751 /* get configuraion from kernel */
2753 sfo.show_counters = show_counters;
2754 sfo.show_time = g_co.do_time;
2755 if (g_co.do_dynamic != 2)
2756 sfo.flags |= IPFW_CFG_GET_STATIC;
2757 if (g_co.do_dynamic != 0)
2758 sfo.flags |= IPFW_CFG_GET_STATES;
2759 if ((sfo.show_counters | sfo.show_time) != 0)
2760 sfo.flags |= IPFW_CFG_GET_COUNTERS;
2761 if (ipfw_get_config(&g_co, &sfo, &cfg, &sz) != 0)
2762 err(EX_OSERR, "retrieving config failed");
2764 error = ipfw_show_config(&g_co, &sfo, cfg, sz, ac, av);
2773 ipfw_show_config(struct cmdline_opts *co, struct format_opts *fo,
2774 ipfw_cfg_lheader *cfg, size_t sz, int ac, char *av[])
2779 int exitval = EX_OK;
2785 ipfw_obj_ctlv *ctlv, *tstate;
2786 ipfw_obj_tlv *rbase;
2789 * Handle tablenames TLV first, if any
2795 readsz = sizeof(*cfg);
2798 fo->set_mask = cfg->set_mask;
2800 ctlv = (ipfw_obj_ctlv *)(cfg + 1);
2801 if (ctlv->head.type == IPFW_TLV_TBLNAME_LIST) {
2802 object_sort_ctlv(ctlv);
2804 readsz += ctlv->head.length;
2805 ctlv = (ipfw_obj_ctlv *)((caddr_t)ctlv + ctlv->head.length);
2808 if (cfg->flags & IPFW_CFG_GET_STATIC) {
2809 /* We've requested static rules */
2810 if (ctlv->head.type == IPFW_TLV_RULE_LIST) {
2811 rbase = (ipfw_obj_tlv *)(ctlv + 1);
2813 readsz += ctlv->head.length;
2814 ctlv = (ipfw_obj_ctlv *)((caddr_t)ctlv +
2819 if ((cfg->flags & IPFW_CFG_GET_STATES) && (readsz != sz)) {
2820 /* We may have some dynamic states */
2821 dynsz = sz - readsz;
2822 /* Skip empty header */
2823 if (dynsz != sizeof(ipfw_obj_ctlv))
2824 dynbase = (caddr_t)ctlv;
2829 prepare_format_opts(co, fo, rbase, rcnt, dynbase, dynsz);
2830 bp_alloc(&bp, 4096);
2832 /* if no rule numbers were specified, list all rules */
2835 fo->last = IPFW_DEFAULT_RULE;
2836 if (cfg->flags & IPFW_CFG_GET_STATIC)
2837 list_static_range(co, fo, &bp, rbase, rcnt);
2839 if (co->do_dynamic && dynsz > 0) {
2840 printf("## Dynamic rules (%d %zu):\n", fo->dcnt,
2842 list_dyn_range(co, fo, &bp, dynbase, dynsz);
2849 /* display specific rules requested on command line */
2850 for (lac = ac, lav = av; lac != 0; lac--) {
2851 /* convert command line rule # */
2852 fo->last = fo->first = strtoul(*lav++, &endptr, 10);
2854 fo->last = strtoul(endptr + 1, &endptr, 10);
2857 warnx("invalid rule number: %s", *(lav - 1));
2861 if ((cfg->flags & IPFW_CFG_GET_STATIC) == 0)
2864 if (list_static_range(co, fo, &bp, rbase, rcnt) == 0) {
2865 /* give precedence to other error(s) */
2866 if (exitval == EX_OK)
2867 exitval = EX_UNAVAILABLE;
2868 if (fo->first == fo->last)
2869 warnx("rule %u does not exist", fo->first);
2871 warnx("no rules in range %u-%u",
2872 fo->first, fo->last);
2876 if (co->do_dynamic && dynsz > 0) {
2877 printf("## Dynamic rules:\n");
2878 for (lac = ac, lav = av; lac != 0; lac--) {
2879 fo->last = fo->first = strtoul(*lav++, &endptr, 10);
2881 fo->last = strtoul(endptr+1, &endptr, 10);
2883 /* already warned */
2885 list_dyn_range(co, fo, &bp, dynbase, dynsz);
2895 * Retrieves current ipfw configuration of given type
2896 * and stores its pointer to @pcfg.
2898 * Caller is responsible for freeing @pcfg.
2900 * Returns 0 on success.
2904 ipfw_get_config(struct cmdline_opts *co, struct format_opts *fo,
2905 ipfw_cfg_lheader **pcfg, size_t *psize)
2907 ipfw_cfg_lheader *cfg;
2912 if (co->test_only != 0) {
2913 fprintf(stderr, "Testing only, list disabled\n");
2917 /* Start with some data size */
2921 for (i = 0; i < 16; i++) {
2924 if ((cfg = calloc(1, sz)) == NULL)
2927 cfg->flags = fo->flags;
2928 cfg->start_rule = fo->first;
2929 cfg->end_rule = fo->last;
2931 if (do_get3(IP_FW_XGET, &cfg->opheader, &sz) != 0) {
2932 if (errno != ENOMEM) {
2937 /* Buffer size is not enough. Try to increase */
2954 lookup_host (char *host, struct in_addr *ipaddr)
2958 if (!inet_aton(host, ipaddr)) {
2959 if ((he = gethostbyname(host)) == NULL)
2961 *ipaddr = *(struct in_addr *)he->h_addr_list[0];
2975 ipfw_check_object_name(const char *name)
2980 * Check that name is null-terminated and contains
2981 * valid symbols only. Valid mask is:
2982 * [a-zA-Z0-9\-_\.]{1,63}
2985 if (l == 0 || l >= 64)
2987 for (i = 0; i < l; i++) {
2989 if (isalpha(c) || isdigit(c) || c == '_' ||
2990 c == '-' || c == '.')
2997 static const char *default_state_name = "default";
3000 state_check_name(const char *name)
3003 if (ipfw_check_object_name(name) != 0)
3005 if (strcmp(name, "any") == 0)
3011 eaction_check_name(const char *name)
3014 if (ipfw_check_object_name(name) != 0)
3016 /* Restrict some 'special' names */
3017 if (match_token(rule_actions, name) != -1 &&
3018 match_token(rule_action_params, name) != -1)
3024 pack_object(struct tidx *tstate, const char *name, int otype)
3026 ipfw_obj_ntlv *ntlv;
3029 for (i = 0; i < tstate->count; i++) {
3030 if (strcmp(tstate->idx[i].name, name) != 0)
3032 if (tstate->idx[i].set != tstate->set)
3034 if (tstate->idx[i].head.type != otype)
3037 return (tstate->idx[i].idx);
3040 if (tstate->count + 1 > tstate->size) {
3042 tstate->idx = realloc(tstate->idx, tstate->size *
3043 sizeof(ipfw_obj_ntlv));
3044 if (tstate->idx == NULL)
3048 ntlv = &tstate->idx[i];
3049 memset(ntlv, 0, sizeof(ipfw_obj_ntlv));
3050 strlcpy(ntlv->name, name, sizeof(ntlv->name));
3051 ntlv->head.type = otype;
3052 ntlv->head.length = sizeof(ipfw_obj_ntlv);
3053 ntlv->set = tstate->set;
3054 ntlv->idx = ++tstate->counter;
3061 pack_table(struct tidx *tstate, const char *name)
3064 if (table_check_name(name) != 0)
3067 return (pack_object(tstate, name, IPFW_TLV_TBL_NAME));
3071 fill_table(struct _ipfw_insn *cmd, char *av, uint8_t opcode,
3072 struct tidx *tstate)
3074 uint32_t *d = ((ipfw_insn_u32 *)cmd)->d;
3078 if ((p = strchr(av + 6, ')')) == NULL)
3079 errx(EX_DATAERR, "forgotten parenthesis: '%s'", av);
3081 p = strchr(av + 6, ',');
3085 if ((uidx = pack_table(tstate, av + 6)) == 0)
3086 errx(EX_DATAERR, "Invalid table name: %s", av + 6);
3088 cmd->opcode = opcode;
3091 cmd->len |= F_INSN_SIZE(ipfw_insn_u32);
3092 d[0] = strtoul(p, NULL, 0);
3094 cmd->len |= F_INSN_SIZE(ipfw_insn);
3099 * fills the addr and mask fields in the instruction as appropriate from av.
3100 * Update length as appropriate.
3101 * The following formats are allowed:
3102 * me returns O_IP_*_ME
3103 * 1.2.3.4 single IP address
3104 * 1.2.3.4:5.6.7.8 address:mask
3105 * 1.2.3.4/24 address/mask
3106 * 1.2.3.4/26{1,6,5,4,23} set of addresses in a subnet
3107 * We can have multiple comma-separated address/mask entries.
3110 fill_ip(ipfw_insn_ip *cmd, char *av, int cblen, struct tidx *tstate)
3113 uint32_t *d = ((ipfw_insn_u32 *)cmd)->d;
3115 cmd->o.len &= ~F_LEN_MASK; /* zero len */
3117 if (_substrcmp(av, "any") == 0)
3120 if (_substrcmp(av, "me") == 0) {
3121 cmd->o.len |= F_INSN_SIZE(ipfw_insn);
3125 if (strncmp(av, "table(", 6) == 0) {
3126 fill_table(&cmd->o, av, O_IP_DST_LOOKUP, tstate);
3132 * After the address we can have '/' or ':' indicating a mask,
3133 * ',' indicating another address follows, '{' indicating a
3134 * set of addresses of unspecified size.
3136 char *t = NULL, *p = strpbrk(av, "/:,{");
3140 CHECK_LENGTH(cblen, (int)F_INSN_SIZE(ipfw_insn) + 2 + len);
3145 if ((t = strpbrk(p, ",{")) != NULL) {
3152 if (lookup_host(av, (struct in_addr *)&d[0]) != 0)
3153 errx(EX_NOHOST, "hostname ``%s'' unknown", av);
3156 if (!inet_aton(p, (struct in_addr *)&d[1]))
3157 errx(EX_DATAERR, "bad netmask ``%s''", p);
3162 d[1] = htonl(0U); /* mask */
3163 else if (masklen > 32)
3164 errx(EX_DATAERR, "bad width ``%s''", p);
3166 d[1] = htonl(~0U << (32 - masklen));
3168 case '{': /* no mask, assume /24 and put back the '{' */
3169 d[1] = htonl(~0U << (32 - 24));
3173 case ',': /* single address plus continuation */
3176 case 0: /* initialization value */
3178 d[1] = htonl(~0U); /* force /32 */
3181 d[0] &= d[1]; /* mask base address with mask */
3184 /* find next separator */
3186 p = strpbrk(p, ",{");
3187 if (p && *p == '{') {
3189 * We have a set of addresses. They are stored as follows:
3190 * arg1 is the set size (powers of 2, 2..256)
3191 * addr is the base address IN HOST FORMAT
3192 * mask.. is an array of arg1 bits (rounded up to
3193 * the next multiple of 32) with bits set
3194 * for each host in the map.
3196 uint32_t *map = (uint32_t *)&cmd->mask;
3198 int i = contigmask((uint8_t *)&(d[1]), 32);
3201 errx(EX_DATAERR, "address set cannot be in a list");
3202 if (i < 24 || i > 31)
3203 errx(EX_DATAERR, "invalid set with mask %d\n", i);
3204 cmd->o.arg1 = 1<<(32-i); /* map length */
3205 d[0] = ntohl(d[0]); /* base addr in host format */
3206 cmd->o.opcode = O_IP_DST_SET; /* default */
3207 cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32) + (cmd->o.arg1+31)/32;
3208 for (i = 0; i < (cmd->o.arg1+31)/32 ; i++)
3209 map[i] = 0; /* clear map */
3213 high = low + cmd->o.arg1 - 1;
3215 * Here, i stores the previous value when we specify a range
3216 * of addresses within a mask, e.g. 45-63. i = -1 means we
3217 * have no previous value.
3219 i = -1; /* previous value in a range */
3220 while (isdigit(*av)) {
3222 int a = strtol(av, &s, 0);
3224 if (s == av) { /* no parameter */
3226 errx(EX_DATAERR, "set not closed\n");
3228 errx(EX_DATAERR, "incomplete range %d-", i);
3231 if (a < low || a > high)
3232 errx(EX_DATAERR, "addr %d out of range [%d-%d]\n",
3235 if (i == -1) /* no previous in range */
3237 else { /* check that range is valid */
3239 errx(EX_DATAERR, "invalid range %d-%d",
3242 errx(EX_DATAERR, "double '-' in range");
3245 map[i/32] |= 1<<(i & 31);
3256 if (av) /* then *av must be a ',' */
3259 /* Check this entry */
3260 if (d[1] == 0) { /* "any", specified as x.x.x.x/0 */
3262 * 'any' turns the entire list into a NOP.
3263 * 'not any' never matches, so it is removed from the
3264 * list unless it is the only item, in which case we
3267 if (cmd->o.len & F_NOT) { /* "not any" never matches */
3268 if (av == NULL && len == 0) /* only this entry */
3269 errx(EX_DATAERR, "not any never matches");
3271 /* else do nothing and skip this entry */
3274 /* A single IP can be stored in an optimized format */
3275 if (d[1] == (uint32_t)~0 && av == NULL && len == 0) {
3276 cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32);
3279 len += 2; /* two words... */
3282 if (len + 1 > F_LEN_MASK)
3283 errx(EX_DATAERR, "address list too long");
3284 cmd->o.len |= len+1;
3288 /* n2mask sets n bits of the mask */
3290 n2mask(struct in6_addr *mask, int n)
3292 static int minimask[9] =
3293 { 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff };
3296 memset(mask, 0, sizeof(struct in6_addr));
3297 p = (u_char *) mask;
3298 for (; n > 0; p++, n -= 8) {
3308 fill_flags_cmd(ipfw_insn *cmd, enum ipfw_opcodes opcode,
3309 struct _s_x *flags, char *p)
3312 uint32_t set = 0, clear = 0;
3314 if (fill_flags(flags, p, &e, &set, &clear) != 0)
3315 errx(EX_DATAERR, "invalid flag %s", e);
3317 cmd->opcode = opcode;
3318 cmd->len = (cmd->len & (F_NOT | F_OR)) | 1;
3319 cmd->arg1 = (set & 0xff) | ( (clear & 0xff) << 8);
3324 ipfw_delete(char *av[])
3329 int exitval = EX_OK;
3333 NEED1("missing rule specification");
3334 if ( *av && _substrcmp(*av, "set") == 0) {
3335 /* Do not allow using the following syntax:
3336 * ipfw set N delete set M
3339 errx(EX_DATAERR, "invalid syntax");
3340 do_set = 1; /* delete set */
3345 while (*av && isdigit(**av)) {
3346 i = strtol(*av, &sep, 10);
3349 j = strtol(sep + 1, NULL, 10);
3352 exitval = ipfw_delete_nat(i);
3353 } else if (g_co.do_pipe) {
3354 exitval = ipfw_delete_pipe(g_co.do_pipe, i);
3356 memset(&rt, 0, sizeof(rt));
3359 rt.flags = IPFW_RCFLAG_SET;
3361 rt.start_rule = i & 0xffff;
3362 rt.end_rule = j & 0xffff;
3363 if (rt.start_rule == 0 && rt.end_rule == 0)
3364 rt.flags |= IPFW_RCFLAG_ALL;
3366 rt.flags |= IPFW_RCFLAG_RANGE;
3367 if (g_co.use_set != 0) {
3368 rt.set = g_co.use_set - 1;
3369 rt.flags |= IPFW_RCFLAG_SET;
3372 if (g_co.do_dynamic == 2)
3373 rt.flags |= IPFW_RCFLAG_DYNAMIC;
3374 i = do_range_cmd(IP_FW_XDEL, &rt);
3376 exitval = EX_UNAVAILABLE;
3379 warn("rule %u: setsockopt(IP_FW_XDEL)",
3381 } else if (rt.new_set == 0 && do_set == 0 &&
3382 g_co.do_dynamic != 2) {
3383 exitval = EX_UNAVAILABLE;
3386 if (rt.start_rule != rt.end_rule)
3387 warnx("no rules rules in %u-%u range",
3388 rt.start_rule, rt.end_rule);
3390 warnx("rule %u not found",
3395 if (exitval != EX_OK && g_co.do_force == 0)
3401 * fill the interface structure. We do not check the name as we can
3402 * create interfaces dynamically, so checking them at insert time
3403 * makes relatively little sense.
3404 * Interface names containing '*', '?', or '[' are assumed to be shell
3405 * patterns which match interfaces.
3408 fill_iface(ipfw_insn_if *cmd, char *arg, int cblen, struct tidx *tstate)
3413 cmd->name[0] = '\0';
3414 cmd->o.len |= F_INSN_SIZE(ipfw_insn_if);
3418 /* Parse the interface or address */
3419 if (strcmp(arg, "any") == 0)
3420 cmd->o.len = 0; /* effectively ignore this command */
3421 else if (strncmp(arg, "table(", 6) == 0) {
3422 if ((p = strchr(arg + 6, ')')) == NULL)
3423 errx(EX_DATAERR, "forgotten parenthesis: '%s'", arg);
3425 p = strchr(arg + 6, ',');
3428 if ((uidx = pack_table(tstate, arg + 6)) == 0)
3429 errx(EX_DATAERR, "Invalid table name: %s", arg + 6);
3431 cmd->name[0] = '\1'; /* Special value indicating table */
3433 } else if (!isdigit(*arg)) {
3434 strlcpy(cmd->name, arg, sizeof(cmd->name));
3435 cmd->p.glob = strpbrk(arg, "*?[") != NULL ? 1 : 0;
3436 } else if (!inet_aton(arg, &cmd->p.ip))
3437 errx(EX_DATAERR, "bad ip address ``%s''", arg);
3441 get_mac_addr_mask(const char *p, uint8_t *addr, uint8_t *mask)
3445 char *ap, *ptr, *optr;
3446 struct ether_addr *mac;
3447 const char *macset = "0123456789abcdefABCDEF:";
3449 if (strcmp(p, "any") == 0) {
3450 for (i = 0; i < ETHER_ADDR_LEN; i++)
3451 addr[i] = mask[i] = 0;
3455 optr = ptr = strdup(p);
3456 if ((ap = strsep(&ptr, "&/")) != NULL && *ap != 0) {
3458 if (strspn(ap, macset) != l || (mac = ether_aton(ap)) == NULL)
3459 errx(EX_DATAERR, "Incorrect MAC address");
3460 bcopy(mac, addr, ETHER_ADDR_LEN);
3462 errx(EX_DATAERR, "Incorrect MAC address");
3464 if (ptr != NULL) { /* we have mask? */
3465 if (p[ptr - optr - 1] == '/') { /* mask len */
3466 long ml = strtol(ptr, &ap, 10);
3467 if (*ap != 0 || ml > ETHER_ADDR_LEN * 8 || ml < 0)
3468 errx(EX_DATAERR, "Incorrect mask length");
3469 for (i = 0; ml > 0 && i < ETHER_ADDR_LEN; ml -= 8, i++)
3470 mask[i] = (ml >= 8) ? 0xff: (~0) << (8 - ml);
3473 if (strspn(ptr, macset) != l ||
3474 (mac = ether_aton(ptr)) == NULL)
3475 errx(EX_DATAERR, "Incorrect mask");
3476 bcopy(mac, mask, ETHER_ADDR_LEN);
3478 } else { /* default mask: ff:ff:ff:ff:ff:ff */
3479 for (i = 0; i < ETHER_ADDR_LEN; i++)
3482 for (i = 0; i < ETHER_ADDR_LEN; i++)
3489 * helper function, updates the pointer to cmd with the length
3490 * of the current command, and also cleans up the first word of
3491 * the new command in case it has been clobbered before.
3494 next_cmd(ipfw_insn *cmd, int *len)
3497 CHECK_LENGTH(*len, 0);
3499 bzero(cmd, sizeof(*cmd));
3504 * Takes arguments and copies them into a comment
3507 fill_comment(ipfw_insn *cmd, char **av, int cblen)
3510 char *p = (char *)(cmd + 1);
3512 cmd->opcode = O_NOP;
3513 cmd->len = (cmd->len & (F_NOT | F_OR));
3515 /* Compute length of comment string. */
3516 for (i = 0, l = 0; av[i] != NULL; i++)
3517 l += strlen(av[i]) + 1;
3522 "comment too long (max 80 chars)");
3524 cmd->len = (cmd->len & (F_NOT | F_OR)) | l;
3527 for (i = 0; av[i] != NULL; i++) {
3536 * A function to fill simple commands of size 1.
3537 * Existing flags are preserved.
3540 fill_cmd(ipfw_insn *cmd, enum ipfw_opcodes opcode, int flags, uint16_t arg)
3542 cmd->opcode = opcode;
3543 cmd->len = ((cmd->len | flags) & (F_NOT | F_OR)) | 1;
3548 * Fetch and add the MAC address and type, with masks. This generates one or
3549 * two microinstructions, and returns the pointer to the last one.
3552 add_mac(ipfw_insn *cmd, char *av[], int cblen)
3556 if ( ( av[0] == NULL ) || ( av[1] == NULL ) )
3557 errx(EX_DATAERR, "MAC dst src");
3559 cmd->opcode = O_MACADDR2;
3560 cmd->len = (cmd->len & (F_NOT | F_OR)) | F_INSN_SIZE(ipfw_insn_mac);
3563 mac = (ipfw_insn_mac *)cmd;
3564 get_mac_addr_mask(av[0], mac->addr, mac->mask); /* dst */
3565 get_mac_addr_mask(av[1], &(mac->addr[ETHER_ADDR_LEN]),
3566 &(mac->mask[ETHER_ADDR_LEN])); /* src */
3571 add_mactype(ipfw_insn *cmd, char *av, int cblen)
3574 errx(EX_DATAERR, "missing MAC type");
3575 if (strcmp(av, "any") != 0) { /* we have a non-null type */
3576 fill_newports((ipfw_insn_u16 *)cmd, av, IPPROTO_ETHERTYPE,
3578 cmd->opcode = O_MAC_TYPE;
3585 add_proto0(ipfw_insn *cmd, char *av, u_char *protop)
3587 struct protoent *pe;
3591 proto = strtol(av, &ep, 10);
3592 if (*ep != '\0' || proto <= 0) {
3593 if ((pe = getprotobyname(av)) == NULL)
3595 proto = pe->p_proto;
3598 fill_cmd(cmd, O_PROTO, 0, proto);
3604 add_proto(ipfw_insn *cmd, char *av, u_char *protop)
3606 u_char proto = IPPROTO_IP;
3608 if (_substrcmp(av, "all") == 0 || strcmp(av, "ip") == 0)
3609 ; /* do not set O_IP4 nor O_IP6 */
3610 else if (strcmp(av, "ip4") == 0)
3611 /* explicit "just IPv4" rule */
3612 fill_cmd(cmd, O_IP4, 0, 0);
3613 else if (strcmp(av, "ip6") == 0) {
3614 /* explicit "just IPv6" rule */
3615 proto = IPPROTO_IPV6;
3616 fill_cmd(cmd, O_IP6, 0, 0);
3618 return add_proto0(cmd, av, protop);
3625 add_proto_compat(ipfw_insn *cmd, char *av, u_char *protop)
3627 u_char proto = IPPROTO_IP;
3629 if (_substrcmp(av, "all") == 0 || strcmp(av, "ip") == 0)
3630 ; /* do not set O_IP4 nor O_IP6 */
3631 else if (strcmp(av, "ipv4") == 0 || strcmp(av, "ip4") == 0)
3632 /* explicit "just IPv4" rule */
3633 fill_cmd(cmd, O_IP4, 0, 0);
3634 else if (strcmp(av, "ipv6") == 0 || strcmp(av, "ip6") == 0) {
3635 /* explicit "just IPv6" rule */
3636 proto = IPPROTO_IPV6;
3637 fill_cmd(cmd, O_IP6, 0, 0);
3639 return add_proto0(cmd, av, protop);
3646 add_srcip(ipfw_insn *cmd, char *av, int cblen, struct tidx *tstate)
3648 fill_ip((ipfw_insn_ip *)cmd, av, cblen, tstate);
3649 if (cmd->opcode == O_IP_DST_SET) /* set */
3650 cmd->opcode = O_IP_SRC_SET;
3651 else if (cmd->opcode == O_IP_DST_LOOKUP) /* table */
3652 cmd->opcode = O_IP_SRC_LOOKUP;
3653 else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */
3654 cmd->opcode = O_IP_SRC_ME;
3655 else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */
3656 cmd->opcode = O_IP_SRC;
3657 else /* addr/mask */
3658 cmd->opcode = O_IP_SRC_MASK;
3663 add_dstip(ipfw_insn *cmd, char *av, int cblen, struct tidx *tstate)
3665 fill_ip((ipfw_insn_ip *)cmd, av, cblen, tstate);
3666 if (cmd->opcode == O_IP_DST_SET) /* set */
3668 else if (cmd->opcode == O_IP_DST_LOOKUP) /* table */
3670 else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */
3671 cmd->opcode = O_IP_DST_ME;
3672 else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */
3673 cmd->opcode = O_IP_DST;
3674 else /* addr/mask */
3675 cmd->opcode = O_IP_DST_MASK;
3679 static struct _s_x f_reserved_keywords[] = {
3682 { "diverted", TOK_OR },
3683 { "dst-port", TOK_OR },
3684 { "src-port", TOK_OR },
3685 { "established", TOK_OR },
3686 { "keep-state", TOK_OR },
3688 { "icmptypes", TOK_OR },
3696 { NULL, 0 } /* terminator */
3700 add_ports(ipfw_insn *cmd, char *av, u_char proto, int opcode, int cblen)
3703 if (match_token(f_reserved_keywords, av) != -1)
3706 if (fill_newports((ipfw_insn_u16 *)cmd, av, proto, cblen)) {
3707 /* XXX todo: check that we have a protocol with ports */
3708 cmd->opcode = opcode;
3715 add_src(ipfw_insn *cmd, char *av, u_char proto, int cblen, struct tidx *tstate)
3718 char *host, *ch, buf[INET6_ADDRSTRLEN];
3719 ipfw_insn *ret = NULL;
3722 /* Copy first address in set if needed */
3723 if ((ch = strpbrk(av, "/,")) != NULL) {
3725 strlcpy(buf, av, sizeof(buf));
3726 if (len < sizeof(buf))
3732 if (proto == IPPROTO_IPV6 || strcmp(av, "me6") == 0 ||
3733 inet_pton(AF_INET6, host, &a) == 1)
3734 ret = add_srcip6(cmd, av, cblen, tstate);
3735 /* XXX: should check for IPv4, not !IPv6 */
3736 if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 ||
3737 inet_pton(AF_INET6, host, &a) != 1))
3738 ret = add_srcip(cmd, av, cblen, tstate);
3739 if (ret == NULL && strcmp(av, "any") != 0)
3746 add_dst(ipfw_insn *cmd, char *av, u_char proto, int cblen, struct tidx *tstate)
3749 char *host, *ch, buf[INET6_ADDRSTRLEN];
3750 ipfw_insn *ret = NULL;
3753 /* Copy first address in set if needed */
3754 if ((ch = strpbrk(av, "/,")) != NULL) {
3756 strlcpy(buf, av, sizeof(buf));
3757 if (len < sizeof(buf))
3763 if (proto == IPPROTO_IPV6 || strcmp(av, "me6") == 0 ||
3764 inet_pton(AF_INET6, host, &a) == 1)
3765 ret = add_dstip6(cmd, av, cblen, tstate);
3766 /* XXX: should check for IPv4, not !IPv6 */
3767 if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 ||
3768 inet_pton(AF_INET6, host, &a) != 1))
3769 ret = add_dstip(cmd, av, cblen, tstate);
3770 if (ret == NULL && strcmp(av, "any") != 0)
3777 * Parse arguments and assemble the microinstructions which make up a rule.
3778 * Rules are added into the 'rulebuf' and then copied in the correct order
3779 * into the actual rule.
3781 * The syntax for a rule starts with the action, followed by
3782 * optional action parameters, and the various match patterns.
3783 * In the assembled microcode, the first opcode must be an O_PROBE_STATE
3784 * (generated if the rule includes a keep-state option), then the
3785 * various match patterns, log/altq actions, and the actual action.
3789 compile_rule(char *av[], uint32_t *rbuf, int *rbufsize, struct tidx *tstate)
3792 * rules are added into the 'rulebuf' and then copied in
3793 * the correct order into the actual rule.
3794 * Some things that need to go out of order (prob, action etc.)
3797 static uint32_t actbuf[255], cmdbuf[255];
3798 int rblen, ablen, cblen;
3800 ipfw_insn *src, *dst, *cmd, *action, *prev=NULL;
3801 ipfw_insn *first_cmd; /* first match pattern */
3803 struct ip_fw_rule *rule;
3806 * various flags used to record that we entered some fields.
3808 ipfw_insn *have_state = NULL; /* any state-related option */
3809 int have_rstate = 0;
3810 ipfw_insn *have_log = NULL, *have_altq = NULL, *have_tag = NULL;
3811 ipfw_insn *have_skipcmd = NULL;
3816 int open_par = 0; /* open parenthesis ( */
3818 /* proto is here because it is used to fetch ports */
3819 u_char proto = IPPROTO_IP; /* default protocol */
3821 double match_prob = 1; /* match probability, default is always match */
3823 bzero(actbuf, sizeof(actbuf)); /* actions go here */
3824 bzero(cmdbuf, sizeof(cmdbuf));
3825 bzero(rbuf, *rbufsize);
3827 rule = (struct ip_fw_rule *)rbuf;
3828 cmd = (ipfw_insn *)cmdbuf;
3829 action = (ipfw_insn *)actbuf;
3831 rblen = *rbufsize / sizeof(uint32_t);
3832 rblen -= sizeof(struct ip_fw_rule) / sizeof(uint32_t);
3833 ablen = sizeof(actbuf) / sizeof(actbuf[0]);
3834 cblen = sizeof(cmdbuf) / sizeof(cmdbuf[0]);
3835 cblen -= F_INSN_SIZE(ipfw_insn_u32) + 1;
3837 #define CHECK_RBUFLEN(len) { CHECK_LENGTH(rblen, len); rblen -= len; }
3838 #define CHECK_ACTLEN CHECK_LENGTH(ablen, action->len)
3842 /* [rule N] -- Rule number optional */
3843 if (av[0] && isdigit(**av)) {
3844 rule->rulenum = atoi(*av);
3848 /* [set N] -- set number (0..RESVD_SET), optional */
3849 if (av[0] && av[1] && _substrcmp(*av, "set") == 0) {
3850 int set = strtoul(av[1], NULL, 10);
3851 if (set < 0 || set > RESVD_SET)
3852 errx(EX_DATAERR, "illegal set %s", av[1]);
3858 /* [prob D] -- match probability, optional */
3859 if (av[0] && av[1] && _substrcmp(*av, "prob") == 0) {
3860 match_prob = strtod(av[1], NULL);
3862 if (match_prob <= 0 || match_prob > 1)
3863 errx(EX_DATAERR, "illegal match prob. %s", av[1]);
3867 /* action -- mandatory */
3868 NEED1("missing action");
3869 i = match_token(rule_actions, *av);
3871 action->len = 1; /* default */
3874 case TOK_CHECKSTATE:
3875 have_state = action;
3876 action->opcode = O_CHECK_STATE;
3878 match_token(rule_options, *av) == TOK_COMMENT) {
3879 action->arg1 = pack_object(tstate,
3880 default_state_name, IPFW_TLV_STATE_NAME);
3883 if (*av[0] == ':') {
3884 if (strcmp(*av + 1, "any") == 0)
3886 else if (state_check_name(*av + 1) == 0)
3887 action->arg1 = pack_object(tstate, *av + 1,
3888 IPFW_TLV_STATE_NAME);
3890 errx(EX_DATAERR, "Invalid state name %s",
3895 errx(EX_DATAERR, "Invalid state name %s", *av);
3899 action->opcode = O_REJECT;
3900 action->arg1 = ICMP_REJECT_ABORT;
3904 action->opcode = O_UNREACH6;
3905 action->arg1 = ICMP6_UNREACH_ABORT;
3909 action->opcode = O_ACCEPT;
3913 action->opcode = O_DENY;
3918 action->opcode = O_REJECT;
3919 action->arg1 = ICMP_UNREACH_HOST;
3923 action->opcode = O_REJECT;
3924 action->arg1 = ICMP_REJECT_RST;
3928 action->opcode = O_UNREACH6;
3929 action->arg1 = ICMP6_UNREACH_RST;
3933 action->opcode = O_REJECT;
3934 NEED1("missing reject code");
3935 fill_reject_code(&action->arg1, *av);
3940 action->opcode = O_UNREACH6;
3941 NEED1("missing unreach code");
3942 fill_unreach6_code(&action->arg1, *av);
3947 action->opcode = O_COUNT;
3951 action->opcode = O_NAT;
3952 action->len = F_INSN_SIZE(ipfw_insn_nat);
3954 if (*av != NULL && _substrcmp(*av, "global") == 0) {
3955 action->arg1 = IP_FW_NAT44_GLOBAL;
3961 action->opcode = O_QUEUE;
3964 action->opcode = O_PIPE;
3967 action->opcode = O_SKIPTO;
3970 action->opcode = O_NETGRAPH;
3973 action->opcode = O_NGTEE;
3976 action->opcode = O_DIVERT;
3979 action->opcode = O_TEE;
3982 action->opcode = O_CALLRETURN;
3985 errx(EX_USAGE, "missing argument for %s", *(av - 1));
3986 if (isdigit(**av)) {
3987 action->arg1 = strtoul(*av, NULL, 10);
3988 if (action->arg1 <= 0 || action->arg1 >= IP_FW_TABLEARG)
3989 errx(EX_DATAERR, "illegal argument for %s",
3991 } else if (_substrcmp(*av, "tablearg") == 0) {
3992 action->arg1 = IP_FW_TARG;
3993 } else if (i == TOK_DIVERT || i == TOK_TEE) {
3996 s = getservbyname(av[0], "divert");
3998 action->arg1 = ntohs(s->s_port);
4000 errx(EX_DATAERR, "illegal divert/tee port");
4002 errx(EX_DATAERR, "illegal argument for %s", *(av - 1));
4008 * Locate the address-port separator (':' or ',').
4009 * Could be one of the following:
4013 * IPv6 w:x:y::z,port
4014 * IPv6 [w:x:y::z]:port
4016 struct sockaddr_storage result;
4017 struct addrinfo *res;
4020 u_short port_number = 0;
4022 NEED1("missing forward address[:port]");
4024 if (strncmp(*av, "tablearg", 8) == 0 &&
4025 ((*av)[8] == '\0' || (*av)[8] == ',' || (*av)[8] == ':'))
4026 memcpy(++(*av), "0.0.0.0", 7);
4029 * Are we an bracket-enclosed IPv6 address?
4031 if (strchr(*av, '['))
4035 * locate the address-port separator (':' or ',')
4037 s = strchr(*av, ',');
4039 s = strchr(*av, ']');
4040 /* Prevent erroneous parsing on brackets. */
4046 /* Distinguish between IPv4:port and IPv6 cases. */
4048 if (s && strchr(s+1, ':'))
4049 s = NULL; /* no port */
4053 /* Terminate host portion and set s to start of port. */
4055 i = strtoport(s, &end, 0 /* base */, 0 /* proto */);
4058 "illegal forwarding port ``%s''", s);
4059 port_number = (u_short)i;
4063 * Resolve the host name or address to a family and a
4064 * network representation of the address.
4066 if (getaddrinfo(*av, NULL, NULL, &res))
4067 errx(EX_DATAERR, NULL);
4068 /* Just use the first host in the answer. */
4069 family = res->ai_family;
4070 memcpy(&result, res->ai_addr, res->ai_addrlen);
4073 if (family == PF_INET) {
4074 ipfw_insn_sa *p = (ipfw_insn_sa *)action;
4076 action->opcode = O_FORWARD_IP;
4077 action->len = F_INSN_SIZE(ipfw_insn_sa);
4081 * In the kernel we assume AF_INET and use only
4082 * sin_port and sin_addr. Remember to set sin_len as
4083 * the routing code seems to use it too.
4085 p->sa.sin_len = sizeof(struct sockaddr_in);
4086 p->sa.sin_family = AF_INET;
4087 p->sa.sin_port = port_number;
4088 p->sa.sin_addr.s_addr =
4089 ((struct sockaddr_in *)&result)->sin_addr.s_addr;
4090 } else if (family == PF_INET6) {
4091 ipfw_insn_sa6 *p = (ipfw_insn_sa6 *)action;
4093 action->opcode = O_FORWARD_IP6;
4094 action->len = F_INSN_SIZE(ipfw_insn_sa6);
4097 p->sa.sin6_len = sizeof(struct sockaddr_in6);
4098 p->sa.sin6_family = AF_INET6;
4099 p->sa.sin6_port = port_number;
4100 p->sa.sin6_flowinfo = 0;
4101 p->sa.sin6_scope_id =
4102 ((struct sockaddr_in6 *)&result)->sin6_scope_id;
4103 bcopy(&((struct sockaddr_in6*)&result)->sin6_addr,
4104 &p->sa.sin6_addr, sizeof(p->sa.sin6_addr));
4106 errx(EX_DATAERR, "Invalid address family in forward action");
4112 /* pretend it is a 'count' rule followed by the comment */
4113 action->opcode = O_COUNT;
4114 av--; /* go back... */
4120 size_t intsize = sizeof(int);
4122 action->opcode = O_SETFIB;
4123 NEED1("missing fib number");
4124 if (_substrcmp(*av, "tablearg") == 0) {
4125 action->arg1 = IP_FW_TARG;
4127 action->arg1 = strtoul(*av, NULL, 10);
4128 if (sysctlbyname("net.fibs", &numfibs, &intsize,
4130 errx(EX_DATAERR, "fibs not suported.\n");
4131 if (action->arg1 >= numfibs) /* Temporary */
4132 errx(EX_DATAERR, "fib too large.\n");
4133 /* Add high-order bit to fib to make room for tablearg*/
4134 action->arg1 |= 0x8000;
4144 action->opcode = O_SETDSCP;
4145 NEED1("missing DSCP code");
4146 if (_substrcmp(*av, "tablearg") == 0) {
4147 action->arg1 = IP_FW_TARG;
4149 if (isalpha(*av[0])) {
4150 if ((code = match_token(f_ipdscp, *av)) == -1)
4151 errx(EX_DATAERR, "Unknown DSCP code");
4152 action->arg1 = code;
4154 action->arg1 = strtoul(*av, NULL, 10);
4156 * Add high-order bit to DSCP to make room
4159 action->arg1 |= 0x8000;
4166 action->opcode = O_REASS;
4170 fill_cmd(action, O_CALLRETURN, F_NOT, 0);
4173 case TOK_TCPSETMSS: {
4177 idx = pack_object(tstate, "tcp-setmss", IPFW_TLV_EACTION);
4179 errx(EX_DATAERR, "pack_object failed");
4180 fill_cmd(action, O_EXTERNAL_ACTION, 0, idx);
4181 NEED1("Missing MSS value");
4182 action = next_cmd(action, &ablen);
4185 mss = strtoul(*av, NULL, 10);
4186 if (mss == 0 || mss > UINT16_MAX)
4187 errx(EX_USAGE, "invalid MSS value %s", *av);
4188 fill_cmd(action, O_EXTERNAL_DATA, 0, (uint16_t)mss);
4195 if (match_token(rule_eactions, *av) == -1)
4196 errx(EX_DATAERR, "invalid action %s\n", *av);
4198 * External actions support.
4199 * XXX: we support only syntax with instance name.
4200 * For known external actions (from rule_eactions list)
4201 * we can handle syntax directly. But with `eaction'
4202 * keyword we can use only `eaction <name> <instance>'
4208 NEED1("Missing eaction name");
4209 if (eaction_check_name(*av) != 0)
4210 errx(EX_DATAERR, "Invalid eaction name %s", *av);
4211 idx = pack_object(tstate, *av, IPFW_TLV_EACTION);
4213 errx(EX_DATAERR, "pack_object failed");
4214 fill_cmd(action, O_EXTERNAL_ACTION, 0, idx);
4216 NEED1("Missing eaction instance name");
4217 action = next_cmd(action, &ablen);
4220 if (eaction_check_name(*av) != 0)
4221 errx(EX_DATAERR, "Invalid eaction instance name %s",
4224 * External action instance object has TLV type depended
4225 * from the external action name object index. Since we
4226 * currently don't know this index, use zero as TLV type.
4228 idx = pack_object(tstate, *av, 0);
4230 errx(EX_DATAERR, "pack_object failed");
4231 fill_cmd(action, O_EXTERNAL_INSTANCE, 0, idx);
4235 action = next_cmd(action, &ablen);
4238 * [altq queuename] -- altq tag, optional
4239 * [log [logamount N]] -- log, optional
4241 * If they exist, it go first in the cmdbuf, but then it is
4242 * skipped in the copy section to the end of the buffer.
4244 while (av[0] != NULL && (i = match_token(rule_action_params, *av)) != -1) {
4249 ipfw_insn_log *c = (ipfw_insn_log *)cmd;
4254 "log cannot be specified more than once");
4255 have_log = (ipfw_insn *)c;
4256 cmd->len = F_INSN_SIZE(ipfw_insn_log);
4258 cmd->opcode = O_LOG;
4259 if (av[0] && _substrcmp(*av, "logamount") == 0) {
4261 NEED1("logamount requires argument");
4265 "logamount must be positive");
4269 len = sizeof(c->max_log);
4270 if (sysctlbyname("net.inet.ip.fw.verbose_limit",
4271 &c->max_log, &len, NULL, 0) == -1) {
4272 if (g_co.test_only) {
4276 errx(1, "sysctlbyname(\"%s\")",
4277 "net.inet.ip.fw.verbose_limit");
4286 ipfw_insn_altq *a = (ipfw_insn_altq *)cmd;
4288 NEED1("missing altq queue name");
4291 "altq cannot be specified more than once");
4292 have_altq = (ipfw_insn *)a;
4293 cmd->len = F_INSN_SIZE(ipfw_insn_altq);
4295 cmd->opcode = O_ALTQ;
4296 a->qid = altq_name_to_qid(*av);
4307 errx(EX_USAGE, "tag and untag cannot be "
4308 "specified more than once");
4309 GET_UINT_ARG(tag, IPFW_ARG_MIN, IPFW_ARG_MAX, i,
4310 rule_action_params);
4312 fill_cmd(cmd, O_TAG, (i == TOK_TAG) ? 0: F_NOT, tag);
4320 cmd = next_cmd(cmd, &cblen);
4323 if (have_state) { /* must be a check-state, we are done */
4325 match_token(rule_options, *av) == TOK_COMMENT) {
4326 /* check-state has a comment */
4328 fill_comment(cmd, av, cblen);
4329 cmd = next_cmd(cmd, &cblen);
4335 #define OR_START(target) \
4336 if (av[0] && (*av[0] == '(' || *av[0] == '{')) { \
4338 errx(EX_USAGE, "nested \"(\" not allowed\n"); \
4341 if ( (av[0])[1] == '\0') { \
4352 strcmp(*av, ")") == 0 || \
4353 strcmp(*av, "}") == 0)) { \
4358 errx(EX_USAGE, "missing \")\"\n"); \
4362 if (av[0] && _substrcmp(*av, "not") == 0) { \
4363 if (cmd->len & F_NOT) \
4364 errx(EX_USAGE, "double \"not\" not allowed\n"); \
4365 cmd->len |= F_NOT; \
4369 #define OR_BLOCK(target) \
4370 if (av[0] && _substrcmp(*av, "or") == 0) { \
4371 if (prev == NULL || open_par == 0) \
4372 errx(EX_DATAERR, "invalid OR block"); \
4373 prev->len |= F_OR; \
4383 * MAC addresses, optional.
4384 * If we have this, we skip the part "proto from src to dst"
4385 * and jump straight to the option parsing.
4388 NEED1("missing protocol");
4389 if (_substrcmp(*av, "MAC") == 0 ||
4390 _substrcmp(*av, "mac") == 0) {
4391 av++; /* the "MAC" keyword */
4392 add_mac(cmd, av); /* exits in case of errors */
4393 cmd = next_cmd(cmd);
4394 av += 2; /* dst-mac and src-mac */
4396 NEED1("missing mac type");
4397 if (add_mactype(cmd, av[0]))
4398 cmd = next_cmd(cmd);
4399 av++; /* any or mac-type */
4405 * protocol, mandatory
4407 OR_START(get_proto);
4409 NEED1("missing protocol");
4410 if (add_proto_compat(cmd, *av, &proto)) {
4412 if (F_LEN(cmd) != 0) {
4414 cmd = next_cmd(cmd, &cblen);
4416 } else if (first_cmd != cmd) {
4417 errx(EX_DATAERR, "invalid protocol ``%s''", *av);
4419 rule->flags |= IPFW_RULE_JUSTOPTS;
4422 OR_BLOCK(get_proto);
4424 first_cmd = cmd; /* update pointer to use in compact form */
4429 if ((av[0] == NULL) || _substrcmp(*av, "from") != 0)
4430 errx(EX_USAGE, "missing ``from''");
4434 * source IP, mandatory
4436 OR_START(source_ip);
4437 NOT_BLOCK; /* optional "not" */
4438 NEED1("missing source address");
4439 if (add_src(cmd, *av, proto, cblen, tstate)) {
4441 if (F_LEN(cmd) != 0) { /* ! any */
4443 cmd = next_cmd(cmd, &cblen);
4446 errx(EX_USAGE, "bad source address %s", *av);
4447 OR_BLOCK(source_ip);
4450 * source ports, optional
4452 NOT_BLOCK; /* optional "not" */
4453 if ( av[0] != NULL ) {
4454 if (_substrcmp(*av, "any") == 0 ||
4455 add_ports(cmd, *av, proto, O_IP_SRCPORT, cblen)) {
4457 if (F_LEN(cmd) != 0)
4458 cmd = next_cmd(cmd, &cblen);
4465 if ( (av[0] == NULL) || _substrcmp(*av, "to") != 0 )
4466 errx(EX_USAGE, "missing ``to''");
4470 * destination, mandatory
4473 NOT_BLOCK; /* optional "not" */
4474 NEED1("missing dst address");
4475 if (add_dst(cmd, *av, proto, cblen, tstate)) {
4477 if (F_LEN(cmd) != 0) { /* ! any */
4479 cmd = next_cmd(cmd, &cblen);
4482 errx( EX_USAGE, "bad destination address %s", *av);
4486 * dest. ports, optional
4488 NOT_BLOCK; /* optional "not" */
4490 if (_substrcmp(*av, "any") == 0 ||
4491 add_ports(cmd, *av, proto, O_IP_DSTPORT, cblen)) {
4493 if (F_LEN(cmd) != 0)
4494 cmd = next_cmd(cmd, &cblen);
4497 if (first_cmd == cmd)
4498 rule->flags |= IPFW_RULE_NOOPT;
4502 while ( av[0] != NULL ) {
4504 ipfw_insn_u32 *cmd32; /* alias for cmd */
4507 cmd32 = (ipfw_insn_u32 *)cmd;
4509 if (*s == '!') { /* alternate syntax for NOT */
4510 if (cmd->len & F_NOT)
4511 errx(EX_USAGE, "double \"not\" not allowed\n");
4515 i = match_token(rule_options, s);
4519 if (cmd->len & F_NOT)
4520 errx(EX_USAGE, "double \"not\" not allowed\n");
4525 if (open_par == 0 || prev == NULL)
4526 errx(EX_USAGE, "invalid \"or\" block\n");
4530 case TOK_STARTBRACE:
4532 errx(EX_USAGE, "+nested \"(\" not allowed\n");
4538 errx(EX_USAGE, "+missing \")\"\n");
4544 fill_cmd(cmd, O_IN, 0, 0);
4548 cmd->len ^= F_NOT; /* toggle F_NOT */
4549 fill_cmd(cmd, O_IN, 0, 0);
4553 fill_cmd(cmd, O_DIVERTED, 0, 3);
4556 case TOK_DIVERTEDLOOPBACK:
4557 fill_cmd(cmd, O_DIVERTED, 0, 1);
4560 case TOK_DIVERTEDOUTPUT:
4561 fill_cmd(cmd, O_DIVERTED, 0, 2);
4565 uint32_t set = 0, clear = 0;
4567 if (*av != NULL && fill_flags(f_ipoff, *av, NULL,
4572 * Compatibility: no argument after "frag"
4573 * keyword equals to "frag offset".
4578 fill_cmd(cmd, O_FRAG, 0,
4579 (set & 0xff) | ( (clear & 0xff) << 8));
4584 fill_cmd(cmd, O_LAYER2, 0, 0);
4590 NEED1("recv, xmit, via require interface name"
4592 fill_iface((ipfw_insn_if *)cmd, av[0], cblen, tstate);
4594 if (F_LEN(cmd) == 0) /* not a valid address */
4597 cmd->opcode = O_XMIT;
4598 else if (i == TOK_RECV)
4599 cmd->opcode = O_RECV;
4600 else if (i == TOK_VIA)
4601 cmd->opcode = O_VIA;
4605 NEED1("icmptypes requires list of types");
4606 fill_icmptypes((ipfw_insn_u32 *)cmd, *av);
4610 case TOK_ICMP6TYPES:
4611 NEED1("icmptypes requires list of types");
4612 fill_icmp6types((ipfw_insn_icmp6 *)cmd, *av, cblen);
4617 NEED1("ipttl requires TTL");
4618 if (strpbrk(*av, "-,")) {
4619 if (!add_ports(cmd, *av, 0, O_IPTTL, cblen))
4620 errx(EX_DATAERR, "invalid ipttl %s", *av);
4622 fill_cmd(cmd, O_IPTTL, 0, strtoul(*av, NULL, 0));
4627 NEED1("ipid requires id");
4628 if (strpbrk(*av, "-,")) {
4629 if (!add_ports(cmd, *av, 0, O_IPID, cblen))
4630 errx(EX_DATAERR, "invalid ipid %s", *av);
4632 fill_cmd(cmd, O_IPID, 0, strtoul(*av, NULL, 0));
4637 NEED1("iplen requires length");
4638 if (strpbrk(*av, "-,")) {
4639 if (!add_ports(cmd, *av, 0, O_IPLEN, cblen))
4640 errx(EX_DATAERR, "invalid ip len %s", *av);
4642 fill_cmd(cmd, O_IPLEN, 0, strtoul(*av, NULL, 0));
4647 NEED1("ipver requires version");
4648 fill_cmd(cmd, O_IPVER, 0, strtoul(*av, NULL, 0));
4652 case TOK_IPPRECEDENCE:
4653 NEED1("ipprecedence requires value");
4654 fill_cmd(cmd, O_IPPRECEDENCE, 0,
4655 (strtoul(*av, NULL, 0) & 7) << 5);
4660 NEED1("missing DSCP code");
4661 fill_dscp(cmd, *av, cblen);
4666 NEED1("missing argument for ipoptions");
4667 fill_flags_cmd(cmd, O_IPOPT, f_ipopts, *av);
4672 NEED1("missing argument for iptos");
4673 fill_flags_cmd(cmd, O_IPTOS, f_iptos, *av);
4678 NEED1("uid requires argument");
4684 cmd->opcode = O_UID;
4685 uid = strtoul(*av, &end, 0);
4686 pwd = (*end == '\0') ? getpwuid(uid) : getpwnam(*av);
4688 errx(EX_DATAERR, "uid \"%s\" nonexistent", *av);
4689 cmd32->d[0] = pwd->pw_uid;
4690 cmd->len |= F_INSN_SIZE(ipfw_insn_u32);
4696 NEED1("gid requires argument");
4702 cmd->opcode = O_GID;
4703 gid = strtoul(*av, &end, 0);
4704 grp = (*end == '\0') ? getgrgid(gid) : getgrnam(*av);
4706 errx(EX_DATAERR, "gid \"%s\" nonexistent", *av);
4707 cmd32->d[0] = grp->gr_gid;
4708 cmd->len |= F_INSN_SIZE(ipfw_insn_u32);
4714 NEED1("jail requires argument");
4719 cmd->opcode = O_JAIL;
4721 * If av is a number, then we'll just pass it as-is. If
4722 * it's a name, try to resolve that to a jid.
4724 * We save the jail_getid(3) call for a fallback because
4725 * it entails an unconditional trip to the kernel to
4726 * either validate a jid or resolve a name to a jid.
4727 * This specific token doesn't currently require a
4728 * jid to be an active jail, so we save a transition
4729 * by simply using a number that we're given.
4731 jid = strtoul(*av, &end, 10);
4733 jid = jail_getid(*av);
4735 errx(EX_DATAERR, "%s", jail_errmsg);
4737 cmd32->d[0] = (uint32_t)jid;
4738 cmd->len |= F_INSN_SIZE(ipfw_insn_u32);
4744 fill_cmd(cmd, O_ESTAB, 0, 0);
4748 fill_cmd(cmd, O_TCPFLAGS, 0,
4749 (TH_SYN) | ( (TH_ACK) & 0xff) <<8 );
4752 case TOK_TCPDATALEN:
4753 NEED1("tcpdatalen requires length");
4754 if (strpbrk(*av, "-,")) {
4755 if (!add_ports(cmd, *av, 0, O_TCPDATALEN, cblen))
4756 errx(EX_DATAERR, "invalid tcpdata len %s", *av);
4758 fill_cmd(cmd, O_TCPDATALEN, 0,
4759 strtoul(*av, NULL, 0));
4764 NEED1("missing argument for tcpoptions");
4765 fill_flags_cmd(cmd, O_TCPOPTS, f_tcpopts, *av);
4771 NEED1("tcpseq/tcpack requires argument");
4772 cmd->len = F_INSN_SIZE(ipfw_insn_u32);
4773 cmd->opcode = (i == TOK_TCPSEQ) ? O_TCPSEQ : O_TCPACK;
4774 cmd32->d[0] = htonl(strtoul(*av, NULL, 0));
4780 NEED1("tcpmss/tcpwin requires size");
4781 if (strpbrk(*av, "-,")) {
4782 if (add_ports(cmd, *av, 0,
4783 i == TOK_TCPWIN ? O_TCPWIN : O_TCPMSS,
4785 errx(EX_DATAERR, "invalid %s size %s",
4788 fill_cmd(cmd, i == TOK_TCPWIN ? O_TCPWIN :
4789 O_TCPMSS, 0, strtoul(*av, NULL, 0));
4794 NEED1("missing argument for tcpflags");
4795 cmd->opcode = O_TCPFLAGS;
4796 fill_flags_cmd(cmd, O_TCPFLAGS, f_tcpflags, *av);
4801 case TOK_RECORDSTATE: {
4805 errx(EX_USAGE, "keep-state or record-state cannot be part "
4808 errx(EX_USAGE, "only one of keep-state, record-state, "
4809 " limit and set-limit is allowed");
4810 if (*av != NULL && *av[0] == ':') {
4811 if (state_check_name(*av + 1) != 0)
4813 "Invalid state name %s", *av);
4814 uidx = pack_object(tstate, *av + 1,
4815 IPFW_TLV_STATE_NAME);
4818 uidx = pack_object(tstate, default_state_name,
4819 IPFW_TLV_STATE_NAME);
4821 have_rstate = i == TOK_RECORDSTATE;
4822 fill_cmd(cmd, O_KEEP_STATE, 0, uidx);
4827 case TOK_SETLIMIT: {
4828 ipfw_insn_limit *c = (ipfw_insn_limit *)cmd;
4833 "limit or set-limit cannot be part of an or block");
4835 errx(EX_USAGE, "only one of keep-state, record-state, "
4836 " limit and set-limit is allowed");
4838 have_rstate = i == TOK_SETLIMIT;
4840 cmd->len = F_INSN_SIZE(ipfw_insn_limit);
4842 cmd->opcode = O_LIMIT;
4843 c->limit_mask = c->conn_limit = 0;
4845 while ( av[0] != NULL ) {
4846 if ((val = match_token(limit_masks, *av)) <= 0)
4848 c->limit_mask |= val;
4852 if (c->limit_mask == 0)
4853 errx(EX_USAGE, "limit: missing limit mask");
4855 GET_UINT_ARG(c->conn_limit, IPFW_ARG_MIN, IPFW_ARG_MAX,
4856 TOK_LIMIT, rule_options);
4859 if (*av != NULL && *av[0] == ':') {
4860 if (state_check_name(*av + 1) != 0)
4862 "Invalid state name %s", *av);
4863 cmd->arg1 = pack_object(tstate, *av + 1,
4864 IPFW_TLV_STATE_NAME);
4867 cmd->arg1 = pack_object(tstate,
4868 default_state_name, IPFW_TLV_STATE_NAME);
4873 NEED1("missing protocol");
4874 if (add_proto(cmd, *av, &proto)) {
4877 errx(EX_DATAERR, "invalid protocol ``%s''",
4882 NEED1("missing source IP");
4883 if (add_srcip(cmd, *av, cblen, tstate)) {
4889 NEED1("missing destination IP");
4890 if (add_dstip(cmd, *av, cblen, tstate)) {
4896 NEED1("missing source IP6");
4897 if (add_srcip6(cmd, *av, cblen, tstate)) {
4903 NEED1("missing destination IP6");
4904 if (add_dstip6(cmd, *av, cblen, tstate)) {
4910 NEED1("missing source port");
4911 if (_substrcmp(*av, "any") == 0 ||
4912 add_ports(cmd, *av, proto, O_IP_SRCPORT, cblen)) {
4915 errx(EX_DATAERR, "invalid source port %s", *av);
4919 NEED1("missing destination port");
4920 if (_substrcmp(*av, "any") == 0 ||
4921 add_ports(cmd, *av, proto, O_IP_DSTPORT, cblen)) {
4924 errx(EX_DATAERR, "invalid destination port %s",
4929 if (add_mac(cmd, av, cblen))
4934 NEED1("missing mac type");
4935 if (!add_mactype(cmd, *av, cblen))
4936 errx(EX_DATAERR, "invalid mac type %s", *av);
4940 case TOK_VERREVPATH:
4941 fill_cmd(cmd, O_VERREVPATH, 0, 0);
4944 case TOK_VERSRCREACH:
4945 fill_cmd(cmd, O_VERSRCREACH, 0, 0);
4949 fill_cmd(cmd, O_ANTISPOOF, 0, 0);
4953 fill_cmd(cmd, O_IPSEC, 0, 0);
4957 fill_cmd(cmd, O_IP6, 0, 0);
4961 fill_cmd(cmd, O_IP4, 0, 0);
4965 NEED1("missing extension header");
4966 fill_ext6hdr( cmd, *av );
4971 if (proto != IPPROTO_IPV6 )
4972 errx( EX_USAGE, "flow-id filter is active "
4973 "only for ipv6 protocol\n");
4974 fill_flow6( (ipfw_insn_u32 *) cmd, *av, cblen);
4979 fill_comment(cmd, av, cblen);
4984 if (av[0] && strpbrk(*av, "-,")) {
4985 if (!add_ports(cmd, *av, 0, O_TAGGED, cblen))
4986 errx(EX_DATAERR, "tagged: invalid tag"
4992 GET_UINT_ARG(tag, IPFW_ARG_MIN, IPFW_ARG_MAX,
4993 TOK_TAGGED, rule_options);
4994 fill_cmd(cmd, O_TAGGED, 0, tag);
5000 NEED1("fib requires fib number");
5001 fill_cmd(cmd, O_FIB, 0, strtoul(*av, NULL, 0));
5005 fill_cmd(cmd, O_SOCKARG, 0, 0);
5009 ipfw_insn_u32 *c = (ipfw_insn_u32 *)cmd;
5012 if (!av[0] || !av[1])
5013 errx(EX_USAGE, "format: lookup argument tablenum");
5014 cmd->opcode = O_IP_DST_LOOKUP;
5015 cmd->len |= F_INSN_SIZE(ipfw_insn) + 2;
5016 i = match_token(rule_options, *av);
5017 for (j = 0; lookup_key[j] >= 0 ; j++) {
5018 if (i == lookup_key[j])
5021 if (lookup_key[j] <= 0)
5022 errx(EX_USAGE, "format: cannot lookup on %s", *av);
5023 __PAST_END(c->d, 1) = j; // i converted to option
5026 if ((j = pack_table(tstate, *av)) == 0)
5027 errx(EX_DATAERR, "Invalid table name: %s", *av);
5034 NEED1("missing table name");
5035 if (strncmp(*av, "table(", 6) != 0)
5037 "enclose table name into \"table()\"");
5038 fill_table(cmd, *av, O_IP_FLOW_LOOKUP, tstate);
5042 case TOK_SKIPACTION:
5044 errx(EX_USAGE, "only one defer-action "
5047 fill_cmd(cmd, O_SKIP_ACTION, 0, 0);
5051 errx(EX_USAGE, "unrecognised option [%d] %s\n", i, s);
5053 if (F_LEN(cmd) > 0) { /* prepare to advance */
5055 cmd = next_cmd(cmd, &cblen);
5061 if (!have_state && have_skipcmd)
5062 warnx("Rule contains \"defer-immediate-action\" "
5063 "and doesn't contain any state-related options.");
5066 * Now copy stuff into the rule.
5067 * If we have a keep-state option, the first instruction
5068 * must be a PROBE_STATE (which is generated here).
5069 * If we have a LOG option, it was stored as the first command,
5070 * and now must be moved to the top of the action part.
5072 dst = (ipfw_insn *)rule->cmd;
5075 * First thing to write into the command stream is the match probability.
5077 if (match_prob != 1) { /* 1 means always match */
5078 dst->opcode = O_PROB;
5080 *((int32_t *)(dst+1)) = (int32_t)(match_prob * 0x7fffffff);
5085 * generate O_PROBE_STATE if necessary
5087 if (have_state && have_state->opcode != O_CHECK_STATE && !have_rstate) {
5088 fill_cmd(dst, O_PROBE_STATE, 0, have_state->arg1);
5089 dst = next_cmd(dst, &rblen);
5093 * copy all commands but O_LOG, O_KEEP_STATE, O_LIMIT, O_ALTQ, O_TAG,
5096 for (src = (ipfw_insn *)cmdbuf; src != cmd; src += i) {
5100 switch (src->opcode) {
5109 bcopy(src, dst, i * sizeof(uint32_t));
5115 * put back the have_state command as last opcode
5117 if (have_state && have_state->opcode != O_CHECK_STATE) {
5118 i = F_LEN(have_state);
5120 bcopy(have_state, dst, i * sizeof(uint32_t));
5125 * put back the have_skipcmd command as very last opcode
5128 i = F_LEN(have_skipcmd);
5130 bcopy(have_skipcmd, dst, i * sizeof(uint32_t));
5135 * start action section
5137 rule->act_ofs = dst - rule->cmd;
5139 /* put back O_LOG, O_ALTQ, O_TAG if necessary */
5141 i = F_LEN(have_log);
5143 bcopy(have_log, dst, i * sizeof(uint32_t));
5147 i = F_LEN(have_altq);
5149 bcopy(have_altq, dst, i * sizeof(uint32_t));
5153 i = F_LEN(have_tag);
5155 bcopy(have_tag, dst, i * sizeof(uint32_t));
5160 * copy all other actions
5162 for (src = (ipfw_insn *)actbuf; src != action; src += i) {
5165 bcopy(src, dst, i * sizeof(uint32_t));
5169 rule->cmd_len = (uint32_t *)dst - (uint32_t *)(rule->cmd);
5170 *rbufsize = (char *)dst - (char *)rule;
5174 compare_ntlv(const void *_a, const void *_b)
5176 const ipfw_obj_ntlv *a, *b;
5178 a = (const ipfw_obj_ntlv *)_a;
5179 b = (const ipfw_obj_ntlv *)_b;
5181 if (a->set < b->set)
5183 else if (a->set > b->set)
5186 if (a->idx < b->idx)
5188 else if (a->idx > b->idx)
5191 if (a->head.type < b->head.type)
5193 else if (a->head.type > b->head.type)
5200 * Provide kernel with sorted list of referenced objects
5203 object_sort_ctlv(ipfw_obj_ctlv *ctlv)
5206 qsort(ctlv + 1, ctlv->count, ctlv->objsize, compare_ntlv);
5214 compare_object_kntlv(const void *k, const void *v)
5216 const ipfw_obj_ntlv *ntlv;
5217 struct object_kt key;
5219 key = *((const struct object_kt *)k);
5220 ntlv = (const ipfw_obj_ntlv *)v;
5222 if (key.uidx < ntlv->idx)
5224 else if (key.uidx > ntlv->idx)
5227 if (key.type < ntlv->head.type)
5229 else if (key.type > ntlv->head.type)
5236 * Finds object name in @ctlv by @idx and @type.
5237 * Uses the following facts:
5238 * 1) All TLVs are the same size
5239 * 2) Kernel implementation provides already sorted list.
5241 * Returns table name or NULL.
5244 object_search_ctlv(ipfw_obj_ctlv *ctlv, uint16_t idx, uint16_t type)
5246 ipfw_obj_ntlv *ntlv;
5247 struct object_kt key;
5252 ntlv = bsearch(&key, (ctlv + 1), ctlv->count, ctlv->objsize,
5253 compare_object_kntlv);
5256 return (ntlv->name);
5262 table_search_ctlv(ipfw_obj_ctlv *ctlv, uint16_t idx)
5265 return (object_search_ctlv(ctlv, idx, IPFW_TLV_TBL_NAME));
5269 * Adds one or more rules to ipfw chain.
5274 * [ ipfw_obj_ctlv(IPFW_TLV_TBL_LIST) ipfw_obj_ntlv x N ] (optional *1)
5275 * [ ipfw_obj_ctlv(IPFW_TLV_RULE_LIST) [ ip_fw_rule ip_fw_insn ] x N ] (*2) (*3)
5280 * [ ipfw_obj_ctlv(IPFW_TLV_TBL_LIST) ipfw_obj_ntlv x N ] (optional)
5281 * [ ipfw_obj_ctlv(IPFW_TLV_RULE_LIST) [ ip_fw_rule ip_fw_insn ] x N ]
5284 * Rules in reply are modified to store their actual ruleset number.
5286 * (*1) TLVs inside IPFW_TLV_TBL_LIST needs to be sorted ascending
5287 * according to their idx field and there has to be no duplicates.
5288 * (*2) Numbered rules inside IPFW_TLV_RULE_LIST needs to be sorted ascending.
5289 * (*3) Each ip_fw structure needs to be aligned to u64 boundary.
5292 ipfw_add(char *av[])
5294 uint32_t rulebuf[1024];
5295 int rbufsize, default_off, tlen, rlen;
5298 struct ip_fw_rule *rule;
5300 ip_fw3_opheader *op3;
5301 ipfw_obj_ctlv *ctlv, *tstate;
5303 rbufsize = sizeof(rulebuf);
5304 memset(rulebuf, 0, rbufsize);
5305 memset(&ts, 0, sizeof(ts));
5307 /* Optimize case with no tables */
5308 default_off = sizeof(ipfw_obj_ctlv) + sizeof(ip_fw3_opheader);
5309 op3 = (ip_fw3_opheader *)rulebuf;
5310 ctlv = (ipfw_obj_ctlv *)(op3 + 1);
5311 rule = (struct ip_fw_rule *)(ctlv + 1);
5312 rbufsize -= default_off;
5314 compile_rule(av, (uint32_t *)rule, &rbufsize, &ts);
5315 /* Align rule size to u64 boundary */
5316 rlen = roundup2(rbufsize, sizeof(uint64_t));
5321 if (ts.count != 0) {
5322 /* Some tables. We have to alloc more data */
5323 tlen = ts.count * sizeof(ipfw_obj_ntlv);
5324 sz = default_off + sizeof(ipfw_obj_ctlv) + tlen + rlen;
5326 if ((tbuf = calloc(1, sz)) == NULL)
5327 err(EX_UNAVAILABLE, "malloc() failed for IP_FW_ADD");
5328 op3 = (ip_fw3_opheader *)tbuf;
5330 ctlv = (ipfw_obj_ctlv *)(op3 + 1);
5331 ctlv->head.type = IPFW_TLV_TBLNAME_LIST;
5332 ctlv->head.length = sizeof(ipfw_obj_ctlv) + tlen;
5333 ctlv->count = ts.count;
5334 ctlv->objsize = sizeof(ipfw_obj_ntlv);
5335 memcpy(ctlv + 1, ts.idx, tlen);
5336 object_sort_ctlv(ctlv);
5339 ctlv = (ipfw_obj_ctlv *)((caddr_t)ctlv + ctlv->head.length);
5340 ctlv->head.type = IPFW_TLV_RULE_LIST;
5341 ctlv->head.length = sizeof(ipfw_obj_ctlv) + rlen;
5343 memcpy(ctlv + 1, rule, rbufsize);
5345 /* Simply add header */
5346 sz = rlen + default_off;
5347 memset(ctlv, 0, sizeof(*ctlv));
5348 ctlv->head.type = IPFW_TLV_RULE_LIST;
5349 ctlv->head.length = sizeof(ipfw_obj_ctlv) + rlen;
5353 if (do_get3(IP_FW_XADD, op3, &sz) != 0)
5354 err(EX_UNAVAILABLE, "getsockopt(%s)", "IP_FW_XADD");
5356 if (!g_co.do_quiet) {
5357 struct format_opts sfo;
5359 memset(&sfo, 0, sizeof(sfo));
5360 sfo.tstate = tstate;
5361 sfo.set_mask = (uint32_t)(-1);
5362 bp_alloc(&bp, 4096);
5363 show_static_rule(&g_co, &sfo, &bp, rule, NULL);
5364 printf("%s", bp.buf);
5376 * clear the counters or the log counters.
5377 * optname has the following values:
5378 * 0 (zero both counters and logging)
5379 * 1 (zero logging only)
5382 ipfw_zero(int ac, char *av[], int optname)
5386 char const *name = optname ? "RESETLOG" : "ZERO";
5390 optname = optname ? IP_FW_XRESETLOG : IP_FW_XZERO;
5394 /* clear all entries */
5395 memset(&rt, 0, sizeof(rt));
5396 rt.flags = IPFW_RCFLAG_ALL;
5397 if (do_range_cmd(optname, &rt) < 0)
5398 err(EX_UNAVAILABLE, "setsockopt(IP_FW_X%s)", name);
5400 printf("%s.\n", optname == IP_FW_XZERO ?
5401 "Accounting cleared":"Logging counts reset");
5408 if (isdigit(**av)) {
5409 arg = strtonum(*av, 0, 0xffff, &errstr);
5412 "invalid rule number %s\n", *av);
5413 memset(&rt, 0, sizeof(rt));
5414 rt.start_rule = arg;
5416 rt.flags |= IPFW_RCFLAG_RANGE;
5417 if (g_co.use_set != 0) {
5418 rt.set = g_co.use_set - 1;
5419 rt.flags |= IPFW_RCFLAG_SET;
5421 if (do_range_cmd(optname, &rt) != 0) {
5422 warn("rule %u: setsockopt(IP_FW_X%s)",
5424 failed = EX_UNAVAILABLE;
5425 } else if (rt.new_set == 0) {
5426 printf("Entry %d not found\n", arg);
5427 failed = EX_UNAVAILABLE;
5428 } else if (!g_co.do_quiet)
5429 printf("Entry %d %s.\n", arg,
5430 optname == IP_FW_XZERO ?
5431 "cleared" : "logging count reset");
5433 errx(EX_USAGE, "invalid rule number ``%s''", *av);
5437 if (failed != EX_OK)
5442 ipfw_flush(int force)
5446 if (!force && !g_co.do_quiet) { /* need to ask user */
5449 printf("Are you sure? [yn] ");
5452 c = toupper(getc(stdin));
5453 while (c != '\n' && getc(stdin) != '\n')
5455 return; /* and do not flush */
5456 } while (c != 'Y' && c != 'N');
5458 if (c == 'N') /* user said no */
5465 /* `ipfw set N flush` - is the same that `ipfw delete set N` */
5466 memset(&rt, 0, sizeof(rt));
5467 if (g_co.use_set != 0) {
5468 rt.set = g_co.use_set - 1;
5469 rt.flags = IPFW_RCFLAG_SET;
5471 rt.flags = IPFW_RCFLAG_ALL;
5472 if (do_range_cmd(IP_FW_XDEL, &rt) != 0)
5473 err(EX_UNAVAILABLE, "setsockopt(IP_FW_XDEL)");
5475 printf("Flushed all %s.\n", g_co.do_pipe ? "pipes" : "rules");
5478 static struct _s_x intcmds[] = {
5479 { "talist", TOK_TALIST },
5480 { "iflist", TOK_IFLIST },
5481 { "olist", TOK_OLIST },
5482 { "vlist", TOK_VLIST },
5486 static struct _s_x otypes[] = {
5487 { "EACTION", IPFW_TLV_EACTION },
5488 { "DYNSTATE", IPFW_TLV_STATE_NAME },
5493 lookup_eaction_name(ipfw_obj_ntlv *ntlv, int cnt, uint16_t type)
5499 for (i = 0; i < cnt; i++) {
5500 if (ntlv[i].head.type != IPFW_TLV_EACTION)
5502 if (IPFW_TLV_EACTION_NAME(ntlv[i].idx) != type)
5504 name = ntlv[i].name;
5511 ipfw_list_objects(int ac __unused, char *av[] __unused)
5513 ipfw_obj_lheader req, *olh;
5514 ipfw_obj_ntlv *ntlv;
5519 memset(&req, 0, sizeof(req));
5521 if (do_get3(IP_FW_DUMP_SRVOBJECTS, &req.opheader, &sz) != 0)
5522 if (errno != ENOMEM)
5526 if ((olh = calloc(1, sz)) == NULL)
5530 if (do_get3(IP_FW_DUMP_SRVOBJECTS, &olh->opheader, &sz) != 0) {
5536 printf("Objects list:\n");
5538 printf("There are no objects\n");
5539 ntlv = (ipfw_obj_ntlv *)(olh + 1);
5540 for (i = 0; i < olh->count; i++) {
5541 name = match_value(otypes, ntlv->head.type);
5543 name = lookup_eaction_name(
5544 (ipfw_obj_ntlv *)(olh + 1), olh->count,
5547 printf(" kidx: %4d\ttype: %10d\tname: %s\n",
5548 ntlv->idx, ntlv->head.type, ntlv->name);
5550 printf(" kidx: %4d\ttype: %10s\tname: %s\n",
5551 ntlv->idx, name, ntlv->name);
5558 ipfw_internal_handler(int ac, char *av[])
5563 NEED1("internal cmd required");
5565 if ((tcmd = match_token(intcmds, *av)) == -1)
5566 errx(EX_USAGE, "invalid internal sub-cmd: %s", *av);
5570 ipfw_list_tifaces();
5573 ipfw_list_ta(ac, av);
5576 ipfw_list_objects(ac, av);
5579 ipfw_list_values(ac, av);
5585 ipfw_get_tracked_ifaces(ipfw_obj_lheader **polh)
5587 ipfw_obj_lheader req, *olh;
5590 memset(&req, 0, sizeof(req));
5593 if (do_get3(IP_FW_XIFLIST, &req.opheader, &sz) != 0) {
5594 if (errno != ENOMEM)
5599 if ((olh = calloc(1, sz)) == NULL)
5603 if (do_get3(IP_FW_XIFLIST, &olh->opheader, &sz) != 0) {
5613 ifinfo_cmp(const void *a, const void *b)
5615 const ipfw_iface_info *ia, *ib;
5617 ia = (const ipfw_iface_info *)a;
5618 ib = (const ipfw_iface_info *)b;
5620 return (stringnum_cmp(ia->ifname, ib->ifname));
5624 * Retrieves table list from kernel,
5625 * optionally sorts it and calls requested function for each table.
5626 * Returns 0 on success.
5629 ipfw_list_tifaces(void)
5631 ipfw_obj_lheader *olh = NULL;
5632 ipfw_iface_info *info;
5636 if ((error = ipfw_get_tracked_ifaces(&olh)) != 0)
5637 err(EX_OSERR, "Unable to request ipfw tracked interface list");
5639 qsort(olh + 1, olh->count, olh->objsize, ifinfo_cmp);
5641 info = (ipfw_iface_info *)(olh + 1);
5642 for (i = 0; i < olh->count; i++) {
5643 if (info->flags & IPFW_IFFLAG_RESOLVED)
5644 printf("%s ifindex: %d refcount: %u changes: %u\n",
5645 info->ifname, info->ifindex, info->refcnt,
5648 printf("%s ifindex: unresolved refcount: %u changes: %u\n",
5649 info->ifname, info->refcnt, info->gencnt);
5650 info = (ipfw_iface_info *)((caddr_t)info + olh->objsize);