ipfw2.c revision 220802
198943Sluigi/* 2117328Sluigi * Copyright (c) 2002-2003 Luigi Rizzo 398943Sluigi * Copyright (c) 1996 Alex Nash, Paul Traina, Poul-Henning Kamp 498943Sluigi * Copyright (c) 1994 Ugen J.S.Antsilevich 598943Sluigi * 698943Sluigi * Idea and grammar partially left from: 798943Sluigi * Copyright (c) 1993 Daniel Boulet 898943Sluigi * 998943Sluigi * Redistribution and use in source forms, with and without modification, 1098943Sluigi * are permitted provided that this entire comment appears intact. 1198943Sluigi * 1298943Sluigi * Redistribution in binary form may occur without any restrictions. 1398943Sluigi * Obviously, it would be nice if you gave credit where credit is due 1498943Sluigi * but requiring it would be too onerous. 1598943Sluigi * 1698943Sluigi * This software is provided ``AS IS'' without any warranties of any kind. 1798943Sluigi * 1898943Sluigi * NEW command line interface for IP firewall facility 1998943Sluigi * 2098943Sluigi * $FreeBSD: head/sbin/ipfw/ipfw2.c 220802 2011-04-18 21:18:22Z glebius $ 2198943Sluigi */ 2298943Sluigi 23187604Sluigi#include <sys/types.h> 2498943Sluigi#include <sys/socket.h> 2598943Sluigi#include <sys/sockio.h> 2698943Sluigi#include <sys/sysctl.h> 2798943Sluigi 28187767Sluigi#include "ipfw2.h" 29187767Sluigi 3098943Sluigi#include <ctype.h> 3198943Sluigi#include <err.h> 3298943Sluigi#include <errno.h> 3398943Sluigi#include <grp.h> 3498943Sluigi#include <netdb.h> 3598943Sluigi#include <pwd.h> 3698943Sluigi#include <stdio.h> 3798943Sluigi#include <stdlib.h> 3898943Sluigi#include <string.h> 3998943Sluigi#include <sysexits.h> 40187983Sluigi#include <time.h> /* ctime */ 41187604Sluigi#include <timeconv.h> /* _long_to_time */ 42136071Sgreen#include <unistd.h> 43136071Sgreen#include <fcntl.h> 4498943Sluigi 45169424Smaxim#include <net/ethernet.h> 46187983Sluigi#include <net/if.h> /* only IFNAMSIZ */ 4798943Sluigi#include <netinet/in.h> 48187983Sluigi#include <netinet/in_systm.h> /* only n_short, n_long */ 4998943Sluigi#include <netinet/ip.h> 5098943Sluigi#include <netinet/ip_icmp.h> 5198943Sluigi#include <netinet/ip_fw.h> 5298943Sluigi#include <netinet/tcp.h> 5398943Sluigi#include <arpa/inet.h> 5498943Sluigi 55187767Sluigistruct cmdline_opts co; /* global options */ 5698943Sluigi 57187767Sluigiint resvd_set_number = RESVD_SET; 58187764Sluigi 59159636Soleg#define GET_UINT_ARG(arg, min, max, tok, s_x) do { \ 60204591Sluigi if (!av[0]) \ 61159636Soleg errx(EX_USAGE, "%s: missing argument", match_value(s_x, tok)); \ 62159636Soleg if (_substrcmp(*av, "tablearg") == 0) { \ 63159636Soleg arg = IP_FW_TABLEARG; \ 64159636Soleg break; \ 65159636Soleg } \ 66159636Soleg \ 67159636Soleg { \ 68204591Sluigi long _xval; \ 69159636Soleg char *end; \ 70159636Soleg \ 71204591Sluigi _xval = strtol(*av, &end, 10); \ 72159636Soleg \ 73204591Sluigi if (!isdigit(**av) || *end != '\0' || (_xval == 0 && errno == EINVAL)) \ 74159636Soleg errx(EX_DATAERR, "%s: invalid argument: %s", \ 75159636Soleg match_value(s_x, tok), *av); \ 76159636Soleg \ 77204591Sluigi if (errno == ERANGE || _xval < min || _xval > max) \ 78159636Soleg errx(EX_DATAERR, "%s: argument is out of range (%u..%u): %s", \ 79159636Soleg match_value(s_x, tok), min, max, *av); \ 80159636Soleg \ 81204591Sluigi if (_xval == IP_FW_TABLEARG) \ 82159636Soleg errx(EX_DATAERR, "%s: illegal argument value: %s", \ 83159636Soleg match_value(s_x, tok), *av); \ 84204591Sluigi arg = _xval; \ 85159636Soleg } \ 86158879Soleg} while (0) 87158879Soleg 88187762Sluigistatic void 89187762SluigiPRINT_UINT_ARG(const char *str, uint32_t arg) 90187762Sluigi{ 91187762Sluigi if (str != NULL) 92187762Sluigi printf("%s",str); 93187762Sluigi if (arg == IP_FW_TABLEARG) 94187762Sluigi printf("tablearg"); 95187762Sluigi else 96187762Sluigi printf("%u", arg); 97187762Sluigi} 98159636Soleg 9998943Sluigistatic struct _s_x f_tcpflags[] = { 10098943Sluigi { "syn", TH_SYN }, 10198943Sluigi { "fin", TH_FIN }, 10298943Sluigi { "ack", TH_ACK }, 10398943Sluigi { "psh", TH_PUSH }, 10498943Sluigi { "rst", TH_RST }, 10598943Sluigi { "urg", TH_URG }, 10698943Sluigi { "tcp flag", 0 }, 10798943Sluigi { NULL, 0 } 10898943Sluigi}; 10998943Sluigi 11098943Sluigistatic struct _s_x f_tcpopts[] = { 11198943Sluigi { "mss", IP_FW_TCPOPT_MSS }, 11298943Sluigi { "maxseg", IP_FW_TCPOPT_MSS }, 11398943Sluigi { "window", IP_FW_TCPOPT_WINDOW }, 11498943Sluigi { "sack", IP_FW_TCPOPT_SACK }, 11598943Sluigi { "ts", IP_FW_TCPOPT_TS }, 11698943Sluigi { "timestamp", IP_FW_TCPOPT_TS }, 11798943Sluigi { "cc", IP_FW_TCPOPT_CC }, 11898943Sluigi { "tcp option", 0 }, 11998943Sluigi { NULL, 0 } 12098943Sluigi}; 12198943Sluigi 12298943Sluigi/* 12398943Sluigi * IP options span the range 0 to 255 so we need to remap them 12498943Sluigi * (though in fact only the low 5 bits are significant). 12598943Sluigi */ 12698943Sluigistatic struct _s_x f_ipopts[] = { 12798943Sluigi { "ssrr", IP_FW_IPOPT_SSRR}, 12898943Sluigi { "lsrr", IP_FW_IPOPT_LSRR}, 12998943Sluigi { "rr", IP_FW_IPOPT_RR}, 13098943Sluigi { "ts", IP_FW_IPOPT_TS}, 13198943Sluigi { "ip option", 0 }, 13298943Sluigi { NULL, 0 } 13398943Sluigi}; 13498943Sluigi 13598943Sluigistatic struct _s_x f_iptos[] = { 13698943Sluigi { "lowdelay", IPTOS_LOWDELAY}, 13798943Sluigi { "throughput", IPTOS_THROUGHPUT}, 13898943Sluigi { "reliability", IPTOS_RELIABILITY}, 13998943Sluigi { "mincost", IPTOS_MINCOST}, 140172801Srpaulo { "congestion", IPTOS_ECN_CE}, 141172801Srpaulo { "ecntransport", IPTOS_ECN_ECT0}, 14298943Sluigi { "ip tos option", 0}, 14398943Sluigi { NULL, 0 } 14498943Sluigi}; 14598943Sluigi 14698943Sluigistatic struct _s_x limit_masks[] = { 14798943Sluigi {"all", DYN_SRC_ADDR|DYN_SRC_PORT|DYN_DST_ADDR|DYN_DST_PORT}, 14898943Sluigi {"src-addr", DYN_SRC_ADDR}, 14998943Sluigi {"src-port", DYN_SRC_PORT}, 15098943Sluigi {"dst-addr", DYN_DST_ADDR}, 15198943Sluigi {"dst-port", DYN_DST_PORT}, 15298943Sluigi {NULL, 0} 15398943Sluigi}; 15498943Sluigi 15598943Sluigi/* 15698943Sluigi * we use IPPROTO_ETHERTYPE as a fake protocol id to call the print routines 15798943Sluigi * This is only used in this code. 15898943Sluigi */ 15998943Sluigi#define IPPROTO_ETHERTYPE 0x1000 16098943Sluigistatic struct _s_x ether_types[] = { 16198943Sluigi /* 16298943Sluigi * Note, we cannot use "-:&/" in the names because they are field 16398943Sluigi * separators in the type specifications. Also, we use s = NULL as 16498943Sluigi * end-delimiter, because a type of 0 can be legal. 16598943Sluigi */ 16698943Sluigi { "ip", 0x0800 }, 16798943Sluigi { "ipv4", 0x0800 }, 16898943Sluigi { "ipv6", 0x86dd }, 16998943Sluigi { "arp", 0x0806 }, 17098943Sluigi { "rarp", 0x8035 }, 17198943Sluigi { "vlan", 0x8100 }, 17298943Sluigi { "loop", 0x9000 }, 17398943Sluigi { "trail", 0x1000 }, 17498943Sluigi { "at", 0x809b }, 17598943Sluigi { "atalk", 0x809b }, 17698943Sluigi { "aarp", 0x80f3 }, 17798943Sluigi { "pppoe_disc", 0x8863 }, 17898943Sluigi { "pppoe_sess", 0x8864 }, 17998943Sluigi { "ipx_8022", 0x00E0 }, 18098943Sluigi { "ipx_8023", 0x0000 }, 18198943Sluigi { "ipx_ii", 0x8137 }, 18298943Sluigi { "ipx_snap", 0x8137 }, 18398943Sluigi { "ipx", 0x8137 }, 18498943Sluigi { "ns", 0x0600 }, 18598943Sluigi { NULL, 0 } 18698943Sluigi}; 18798943Sluigi 18898943Sluigi 189187769Sluigistatic struct _s_x rule_actions[] = { 19098943Sluigi { "accept", TOK_ACCEPT }, 19198943Sluigi { "pass", TOK_ACCEPT }, 19298943Sluigi { "allow", TOK_ACCEPT }, 19398943Sluigi { "permit", TOK_ACCEPT }, 19498943Sluigi { "count", TOK_COUNT }, 19598943Sluigi { "pipe", TOK_PIPE }, 19698943Sluigi { "queue", TOK_QUEUE }, 19798943Sluigi { "divert", TOK_DIVERT }, 19898943Sluigi { "tee", TOK_TEE }, 199141351Sglebius { "netgraph", TOK_NETGRAPH }, 200141351Sglebius { "ngtee", TOK_NGTEE }, 20198943Sluigi { "fwd", TOK_FORWARD }, 20298943Sluigi { "forward", TOK_FORWARD }, 20398943Sluigi { "skipto", TOK_SKIPTO }, 20498943Sluigi { "deny", TOK_DENY }, 20598943Sluigi { "drop", TOK_DENY }, 20698943Sluigi { "reject", TOK_REJECT }, 207149020Sbz { "reset6", TOK_RESET6 }, 20898943Sluigi { "reset", TOK_RESET }, 209149020Sbz { "unreach6", TOK_UNREACH6 }, 21099475Sluigi { "unreach", TOK_UNREACH }, 21198943Sluigi { "check-state", TOK_CHECKSTATE }, 212117469Sluigi { "//", TOK_COMMENT }, 213220802Sglebius { "nat", TOK_NAT }, 214190633Spiso { "reass", TOK_REASS }, 215178888Sjulian { "setfib", TOK_SETFIB }, 216117328Sluigi { NULL, 0 } /* terminator */ 21798943Sluigi}; 21898943Sluigi 219187769Sluigistatic struct _s_x rule_action_params[] = { 220136071Sgreen { "altq", TOK_ALTQ }, 221136071Sgreen { "log", TOK_LOG }, 222158879Soleg { "tag", TOK_TAG }, 223158879Soleg { "untag", TOK_UNTAG }, 224136071Sgreen { NULL, 0 } /* terminator */ 225136071Sgreen}; 226136071Sgreen 227200567Sluigi/* 228200567Sluigi * The 'lookup' instruction accepts one of the following arguments. 229200567Sluigi * -1 is a terminator for the list. 230200567Sluigi * Arguments are passed as v[1] in O_DST_LOOKUP options. 231200567Sluigi */ 232200567Sluigistatic int lookup_key[] = { 233200567Sluigi TOK_DSTIP, TOK_SRCIP, TOK_DSTPORT, TOK_SRCPORT, 234205169Sluigi TOK_UID, TOK_JAIL, TOK_DSCP, -1 }; 235200567Sluigi 236187769Sluigistatic struct _s_x rule_options[] = { 237158879Soleg { "tagged", TOK_TAGGED }, 23898943Sluigi { "uid", TOK_UID }, 23998943Sluigi { "gid", TOK_GID }, 240133600Scsjp { "jail", TOK_JAIL }, 24198943Sluigi { "in", TOK_IN }, 24298943Sluigi { "limit", TOK_LIMIT }, 24398943Sluigi { "keep-state", TOK_KEEPSTATE }, 24498943Sluigi { "bridged", TOK_LAYER2 }, 24598943Sluigi { "layer2", TOK_LAYER2 }, 24698943Sluigi { "out", TOK_OUT }, 247136073Sgreen { "diverted", TOK_DIVERTED }, 248136073Sgreen { "diverted-loopback", TOK_DIVERTEDLOOPBACK }, 249136073Sgreen { "diverted-output", TOK_DIVERTEDOUTPUT }, 25098943Sluigi { "xmit", TOK_XMIT }, 25198943Sluigi { "recv", TOK_RECV }, 25298943Sluigi { "via", TOK_VIA }, 25398943Sluigi { "fragment", TOK_FRAG }, 25498943Sluigi { "frag", TOK_FRAG }, 255178888Sjulian { "fib", TOK_FIB }, 25698943Sluigi { "ipoptions", TOK_IPOPTS }, 25798943Sluigi { "ipopts", TOK_IPOPTS }, 25898943Sluigi { "iplen", TOK_IPLEN }, 25998943Sluigi { "ipid", TOK_IPID }, 26098943Sluigi { "ipprecedence", TOK_IPPRECEDENCE }, 261205169Sluigi { "dscp", TOK_DSCP }, 26298943Sluigi { "iptos", TOK_IPTOS }, 26398943Sluigi { "ipttl", TOK_IPTTL }, 26498943Sluigi { "ipversion", TOK_IPVER }, 26598943Sluigi { "ipver", TOK_IPVER }, 26698943Sluigi { "estab", TOK_ESTAB }, 26798943Sluigi { "established", TOK_ESTAB }, 26898943Sluigi { "setup", TOK_SETUP }, 269215179Sluigi { "sockarg", TOK_SOCKARG }, 270136075Sgreen { "tcpdatalen", TOK_TCPDATALEN }, 27198943Sluigi { "tcpflags", TOK_TCPFLAGS }, 27298943Sluigi { "tcpflgs", TOK_TCPFLAGS }, 27398943Sluigi { "tcpoptions", TOK_TCPOPTS }, 27498943Sluigi { "tcpopts", TOK_TCPOPTS }, 27598943Sluigi { "tcpseq", TOK_TCPSEQ }, 27698943Sluigi { "tcpack", TOK_TCPACK }, 27798943Sluigi { "tcpwin", TOK_TCPWIN }, 27899909Sluigi { "icmptype", TOK_ICMPTYPES }, 27998943Sluigi { "icmptypes", TOK_ICMPTYPES }, 280102087Sluigi { "dst-ip", TOK_DSTIP }, 281102087Sluigi { "src-ip", TOK_SRCIP }, 282102087Sluigi { "dst-port", TOK_DSTPORT }, 283102087Sluigi { "src-port", TOK_SRCPORT }, 284102087Sluigi { "proto", TOK_PROTO }, 285102087Sluigi { "MAC", TOK_MAC }, 286102087Sluigi { "mac", TOK_MAC }, 287102087Sluigi { "mac-type", TOK_MACTYPE }, 288112250Scjc { "verrevpath", TOK_VERREVPATH }, 289128575Sandre { "versrcreach", TOK_VERSRCREACH }, 290133387Sandre { "antispoof", TOK_ANTISPOOF }, 291117241Sluigi { "ipsec", TOK_IPSEC }, 292145246Sbrooks { "icmp6type", TOK_ICMP6TYPES }, 293145246Sbrooks { "icmp6types", TOK_ICMP6TYPES }, 294145246Sbrooks { "ext6hdr", TOK_EXT6HDR}, 295145246Sbrooks { "flow-id", TOK_FLOWID}, 296145246Sbrooks { "ipv6", TOK_IPV6}, 297145246Sbrooks { "ip6", TOK_IPV6}, 298146894Smlaier { "ipv4", TOK_IPV4}, 299146894Smlaier { "ip4", TOK_IPV4}, 300145246Sbrooks { "dst-ipv6", TOK_DSTIP6}, 301145246Sbrooks { "dst-ip6", TOK_DSTIP6}, 302145246Sbrooks { "src-ipv6", TOK_SRCIP6}, 303145246Sbrooks { "src-ip6", TOK_SRCIP6}, 304200567Sluigi { "lookup", TOK_LOOKUP}, 305117469Sluigi { "//", TOK_COMMENT }, 30698943Sluigi 30798943Sluigi { "not", TOK_NOT }, /* pseudo option */ 30898943Sluigi { "!", /* escape ? */ TOK_NOT }, /* pseudo option */ 30998943Sluigi { "or", TOK_OR }, /* pseudo option */ 31098943Sluigi { "|", /* escape */ TOK_OR }, /* pseudo option */ 311101641Sluigi { "{", TOK_STARTBRACE }, /* pseudo option */ 312101641Sluigi { "(", TOK_STARTBRACE }, /* pseudo option */ 313101641Sluigi { "}", TOK_ENDBRACE }, /* pseudo option */ 314101641Sluigi { ")", TOK_ENDBRACE }, /* pseudo option */ 315117328Sluigi { NULL, 0 } /* terminator */ 31698943Sluigi}; 31798943Sluigi 318206843Sluigi/* 319206843Sluigi * Helper routine to print a possibly unaligned uint64_t on 320206843Sluigi * various platform. If width > 0, print the value with 321206843Sluigi * the desired width, followed by a space; 322206843Sluigi * otherwise, return the required width. 323187787Sluigi */ 324206843Sluigiint 325206843Sluigipr_u64(uint64_t *pd, int width) 326187787Sluigi{ 327206843Sluigi#ifdef TCC 328206843Sluigi#define U64_FMT "I64" 329206843Sluigi#else 330206843Sluigi#define U64_FMT "llu" 331206843Sluigi#endif 332206846Sluigi uint64_t u; 333206846Sluigi unsigned long long d; 334115793Sticso 335206846Sluigi bcopy (pd, &u, sizeof(u)); 336206846Sluigi d = u; 337206843Sluigi return (width > 0) ? 338206843Sluigi printf("%*" U64_FMT " ", width, d) : 339206843Sluigi snprintf(NULL, 0, "%" U64_FMT, d) ; 340206843Sluigi#undef U64_FMT 341129389Sstefanf} 342115793Sticso 343187767Sluigivoid * 344187716Sluigisafe_calloc(size_t number, size_t size) 345187716Sluigi{ 346187716Sluigi void *ret = calloc(number, size); 347187716Sluigi 348187716Sluigi if (ret == NULL) 349187716Sluigi err(EX_OSERR, "calloc"); 350187716Sluigi return ret; 351187716Sluigi} 352187716Sluigi 353187767Sluigivoid * 354187716Sluigisafe_realloc(void *ptr, size_t size) 355187716Sluigi{ 356187716Sluigi void *ret = realloc(ptr, size); 357187716Sluigi 358187716Sluigi if (ret == NULL) 359187716Sluigi err(EX_OSERR, "realloc"); 360187716Sluigi return ret; 361187716Sluigi} 362187716Sluigi 363117328Sluigi/* 364117328Sluigi * conditionally runs the command. 365204591Sluigi * Selected options or negative -> getsockopt 366117328Sluigi */ 367187769Sluigiint 368119740Stmmdo_cmd(int optname, void *optval, uintptr_t optlen) 369117328Sluigi{ 370117328Sluigi static int s = -1; /* the socket */ 371117328Sluigi int i; 372117577Sluigi 373187764Sluigi if (co.test_only) 374117328Sluigi return 0; 375117328Sluigi 376117328Sluigi if (s == -1) 377117328Sluigi s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); 378117328Sluigi if (s < 0) 379117328Sluigi err(EX_UNAVAILABLE, "socket"); 380117328Sluigi 381117328Sluigi if (optname == IP_FW_GET || optname == IP_DUMMYNET_GET || 382130281Sru optname == IP_FW_ADD || optname == IP_FW_TABLE_LIST || 383220802Sglebius optname == IP_FW_TABLE_GETSIZE || 384220802Sglebius optname == IP_FW_NAT_GET_CONFIG || 385204591Sluigi optname < 0 || 386204591Sluigi optname == IP_FW_NAT_GET_LOG) { 387204591Sluigi if (optname < 0) 388204591Sluigi optname = -optname; 389117328Sluigi i = getsockopt(s, IPPROTO_IP, optname, optval, 390117328Sluigi (socklen_t *)optlen); 391204591Sluigi } else { 392117328Sluigi i = setsockopt(s, IPPROTO_IP, optname, optval, optlen); 393204591Sluigi } 394117328Sluigi return i; 395117328Sluigi} 396117328Sluigi 39798943Sluigi/** 39898943Sluigi * match_token takes a table and a string, returns the value associated 399117328Sluigi * with the string (-1 in case of failure). 40098943Sluigi */ 401187769Sluigiint 40298943Sluigimatch_token(struct _s_x *table, char *string) 40398943Sluigi{ 40498943Sluigi struct _s_x *pt; 405117469Sluigi uint i = strlen(string); 40698943Sluigi 40798943Sluigi for (pt = table ; i && pt->s != NULL ; pt++) 40898943Sluigi if (strlen(pt->s) == i && !bcmp(string, pt->s, i)) 40998943Sluigi return pt->x; 41098943Sluigi return -1; 411129389Sstefanf} 41298943Sluigi 413117328Sluigi/** 414117328Sluigi * match_value takes a table and a value, returns the string associated 415117328Sluigi * with the value (NULL in case of failure). 416117328Sluigi */ 417187770Sluigichar const * 418117469Sluigimatch_value(struct _s_x *p, int value) 41998943Sluigi{ 42098943Sluigi for (; p->s != NULL; p++) 42198943Sluigi if (p->x == value) 42298943Sluigi return p->s; 42398943Sluigi return NULL; 42498943Sluigi} 42598943Sluigi 42698943Sluigi/* 427140271Sbrooks * _substrcmp takes two strings and returns 1 if they do not match, 428140271Sbrooks * and 0 if they match exactly or the first string is a sub-string 429140271Sbrooks * of the second. A warning is printed to stderr in the case that the 430140271Sbrooks * first string is a sub-string of the second. 431140271Sbrooks * 432140271Sbrooks * This function will be removed in the future through the usual 433140271Sbrooks * deprecation process. 434140271Sbrooks */ 435187767Sluigiint 436140271Sbrooks_substrcmp(const char *str1, const char* str2) 437140271Sbrooks{ 438140271Sbrooks 439140271Sbrooks if (strncmp(str1, str2, strlen(str1)) != 0) 440140271Sbrooks return 1; 441140271Sbrooks 442140271Sbrooks if (strlen(str1) != strlen(str2)) 443140271Sbrooks warnx("DEPRECATED: '%s' matched '%s' as a sub-string", 444140271Sbrooks str1, str2); 445140271Sbrooks return 0; 446140271Sbrooks} 447140271Sbrooks 448140271Sbrooks/* 449140271Sbrooks * _substrcmp2 takes three strings and returns 1 if the first two do not match, 450140271Sbrooks * and 0 if they match exactly or the second string is a sub-string 451140271Sbrooks * of the first. A warning is printed to stderr in the case that the 452140271Sbrooks * first string does not match the third. 453140271Sbrooks * 454140271Sbrooks * This function exists to warn about the bizzare construction 455140271Sbrooks * strncmp(str, "by", 2) which is used to allow people to use a shotcut 456140271Sbrooks * for "bytes". The problem is that in addition to accepting "by", 457140271Sbrooks * "byt", "byte", and "bytes", it also excepts "by_rabid_dogs" and any 458140271Sbrooks * other string beginning with "by". 459140271Sbrooks * 460140271Sbrooks * This function will be removed in the future through the usual 461140271Sbrooks * deprecation process. 462140271Sbrooks */ 463187769Sluigiint 464140271Sbrooks_substrcmp2(const char *str1, const char* str2, const char* str3) 465140271Sbrooks{ 466140271Sbrooks 467140271Sbrooks if (strncmp(str1, str2, strlen(str2)) != 0) 468140271Sbrooks return 1; 469140271Sbrooks 470140271Sbrooks if (strcmp(str1, str3) != 0) 471140271Sbrooks warnx("DEPRECATED: '%s' matched '%s'", 472140271Sbrooks str1, str3); 473140271Sbrooks return 0; 474140271Sbrooks} 475140271Sbrooks 476140271Sbrooks/* 47798943Sluigi * prints one port, symbolic or numeric 47898943Sluigi */ 47998943Sluigistatic void 480117328Sluigiprint_port(int proto, uint16_t port) 48198943Sluigi{ 48298943Sluigi 48398943Sluigi if (proto == IPPROTO_ETHERTYPE) { 484117469Sluigi char const *s; 48598943Sluigi 486187764Sluigi if (co.do_resolv && (s = match_value(ether_types, port)) ) 48798943Sluigi printf("%s", s); 48898943Sluigi else 48998943Sluigi printf("0x%04x", port); 49098943Sluigi } else { 49198943Sluigi struct servent *se = NULL; 492187764Sluigi if (co.do_resolv) { 49398943Sluigi struct protoent *pe = getprotobynumber(proto); 49498943Sluigi 49598943Sluigi se = getservbyport(htons(port), pe ? pe->p_name : NULL); 49698943Sluigi } 49798943Sluigi if (se) 49898943Sluigi printf("%s", se->s_name); 49998943Sluigi else 50098943Sluigi printf("%d", port); 50198943Sluigi } 50298943Sluigi} 50398943Sluigi 504187769Sluigistatic struct _s_x _port_name[] = { 505117328Sluigi {"dst-port", O_IP_DSTPORT}, 506117328Sluigi {"src-port", O_IP_SRCPORT}, 507117328Sluigi {"ipid", O_IPID}, 508117328Sluigi {"iplen", O_IPLEN}, 509117328Sluigi {"ipttl", O_IPTTL}, 510117328Sluigi {"mac-type", O_MAC_TYPE}, 511136075Sgreen {"tcpdatalen", O_TCPDATALEN}, 512158879Soleg {"tagged", O_TAGGED}, 513117328Sluigi {NULL, 0} 514117328Sluigi}; 515117328Sluigi 51698943Sluigi/* 517117328Sluigi * Print the values in a list 16-bit items of the types above. 51898943Sluigi * XXX todo: add support for mask. 51998943Sluigi */ 52098943Sluigistatic void 521102087Sluigiprint_newports(ipfw_insn_u16 *cmd, int proto, int opcode) 52298943Sluigi{ 523117328Sluigi uint16_t *p = cmd->ports; 52498943Sluigi int i; 525117469Sluigi char const *sep; 52698943Sluigi 527116690Sluigi if (opcode != 0) { 528117328Sluigi sep = match_value(_port_name, opcode); 529117328Sluigi if (sep == NULL) 530116690Sluigi sep = "???"; 531116690Sluigi printf (" %s", sep); 532116690Sluigi } 533116690Sluigi sep = " "; 53498943Sluigi for (i = F_LEN((ipfw_insn *)cmd) - 1; i > 0; i--, p += 2) { 535193702Sluigi printf("%s", sep); 53698943Sluigi print_port(proto, p[0]); 53798943Sluigi if (p[0] != p[1]) { 53898943Sluigi printf("-"); 53998943Sluigi print_port(proto, p[1]); 54098943Sluigi } 54198943Sluigi sep = ","; 54298943Sluigi } 54398943Sluigi} 54498943Sluigi 54598943Sluigi/* 54698943Sluigi * Like strtol, but also translates service names into port numbers 54798943Sluigi * for some protocols. 54898943Sluigi * In particular: 54998943Sluigi * proto == -1 disables the protocol check; 55098943Sluigi * proto == IPPROTO_ETHERTYPE looks up an internal table 55198943Sluigi * proto == <some value in /etc/protocols> matches the values there. 552101628Sluigi * Returns *end == s in case the parameter is not found. 55398943Sluigi */ 55498943Sluigistatic int 55598943Sluigistrtoport(char *s, char **end, int base, int proto) 55698943Sluigi{ 557101628Sluigi char *p, *buf; 558101628Sluigi char *s1; 55998943Sluigi int i; 56098943Sluigi 561101628Sluigi *end = s; /* default - not found */ 562117577Sluigi if (*s == '\0') 563101628Sluigi return 0; /* not found */ 564106505Smaxim 56598943Sluigi if (isdigit(*s)) 56698943Sluigi return strtol(s, end, base); 56798943Sluigi 56898943Sluigi /* 569101628Sluigi * find separator. '\\' escapes the next char. 57098943Sluigi */ 571101628Sluigi for (s1 = s; *s1 && (isalnum(*s1) || *s1 == '\\') ; s1++) 572101628Sluigi if (*s1 == '\\' && s1[1] != '\0') 573101628Sluigi s1++; 57498943Sluigi 575187716Sluigi buf = safe_calloc(s1 - s + 1, 1); 576101628Sluigi 577101628Sluigi /* 578101628Sluigi * copy into a buffer skipping backslashes 579101628Sluigi */ 580101628Sluigi for (p = s, i = 0; p != s1 ; p++) 581117577Sluigi if (*p != '\\') 582101628Sluigi buf[i++] = *p; 583101628Sluigi buf[i++] = '\0'; 584101628Sluigi 58598943Sluigi if (proto == IPPROTO_ETHERTYPE) { 586101628Sluigi i = match_token(ether_types, buf); 587101628Sluigi free(buf); 588101628Sluigi if (i != -1) { /* found */ 58998943Sluigi *end = s1; 59098943Sluigi return i; 59198943Sluigi } 59298943Sluigi } else { 59398943Sluigi struct protoent *pe = NULL; 59498943Sluigi struct servent *se; 59598943Sluigi 59698943Sluigi if (proto != 0) 59798943Sluigi pe = getprotobynumber(proto); 59898943Sluigi setservent(1); 599101628Sluigi se = getservbyname(buf, pe ? pe->p_name : NULL); 600101628Sluigi free(buf); 60198943Sluigi if (se != NULL) { 60298943Sluigi *end = s1; 60398943Sluigi return ntohs(se->s_port); 60498943Sluigi } 60598943Sluigi } 606101628Sluigi return 0; /* not found */ 60798943Sluigi} 60898943Sluigi 60998943Sluigi/* 610117328Sluigi * Fill the body of the command with the list of port ranges. 61198943Sluigi */ 61298943Sluigistatic int 61398943Sluigifill_newports(ipfw_insn_u16 *cmd, char *av, int proto) 61498943Sluigi{ 615117328Sluigi uint16_t a, b, *p = cmd->ports; 61698943Sluigi int i = 0; 617102087Sluigi char *s = av; 61898943Sluigi 619102087Sluigi while (*s) { 62098943Sluigi a = strtoport(av, &s, 0, proto); 621159636Soleg if (s == av) /* empty or invalid argument */ 622159636Soleg return (0); 623159636Soleg 624159636Soleg switch (*s) { 625159636Soleg case '-': /* a range */ 626159636Soleg av = s + 1; 62798943Sluigi b = strtoport(av, &s, 0, proto); 628159636Soleg /* Reject expressions like '1-abc' or '1-2-3'. */ 629159636Soleg if (s == av || (*s != ',' && *s != '\0')) 630159636Soleg return (0); 63198943Sluigi p[0] = a; 63298943Sluigi p[1] = b; 633159636Soleg break; 634159636Soleg case ',': /* comma separated list */ 635159636Soleg case '\0': 63698943Sluigi p[0] = p[1] = a; 637159636Soleg break; 638159636Soleg default: 639159636Soleg warnx("port list: invalid separator <%c> in <%s>", 640101978Sluigi *s, av); 641159636Soleg return (0); 642159636Soleg } 643159636Soleg 644102087Sluigi i++; 645102087Sluigi p += 2; 646159636Soleg av = s + 1; 64798943Sluigi } 64898943Sluigi if (i > 0) { 649159636Soleg if (i + 1 > F_LEN_MASK) 650102087Sluigi errx(EX_DATAERR, "too many ports/ranges\n"); 651159636Soleg cmd->o.len |= i + 1; /* leave F_NOT and F_OR untouched */ 65298943Sluigi } 653159636Soleg return (i); 65498943Sluigi} 65598943Sluigi 65698943Sluigistatic struct _s_x icmpcodes[] = { 65798943Sluigi { "net", ICMP_UNREACH_NET }, 65898943Sluigi { "host", ICMP_UNREACH_HOST }, 65998943Sluigi { "protocol", ICMP_UNREACH_PROTOCOL }, 66098943Sluigi { "port", ICMP_UNREACH_PORT }, 66198943Sluigi { "needfrag", ICMP_UNREACH_NEEDFRAG }, 66298943Sluigi { "srcfail", ICMP_UNREACH_SRCFAIL }, 66398943Sluigi { "net-unknown", ICMP_UNREACH_NET_UNKNOWN }, 66498943Sluigi { "host-unknown", ICMP_UNREACH_HOST_UNKNOWN }, 66598943Sluigi { "isolated", ICMP_UNREACH_ISOLATED }, 66698943Sluigi { "net-prohib", ICMP_UNREACH_NET_PROHIB }, 66798943Sluigi { "host-prohib", ICMP_UNREACH_HOST_PROHIB }, 66898943Sluigi { "tosnet", ICMP_UNREACH_TOSNET }, 66998943Sluigi { "toshost", ICMP_UNREACH_TOSHOST }, 67098943Sluigi { "filter-prohib", ICMP_UNREACH_FILTER_PROHIB }, 67198943Sluigi { "host-precedence", ICMP_UNREACH_HOST_PRECEDENCE }, 67298943Sluigi { "precedence-cutoff", ICMP_UNREACH_PRECEDENCE_CUTOFF }, 67398943Sluigi { NULL, 0 } 67498943Sluigi}; 67598943Sluigi 67698943Sluigistatic void 67798943Sluigifill_reject_code(u_short *codep, char *str) 67898943Sluigi{ 67998943Sluigi int val; 68098943Sluigi char *s; 68198943Sluigi 68298943Sluigi val = strtoul(str, &s, 0); 68398943Sluigi if (s == str || *s != '\0' || val >= 0x100) 68498943Sluigi val = match_token(icmpcodes, str); 685102087Sluigi if (val < 0) 68698943Sluigi errx(EX_DATAERR, "unknown ICMP unreachable code ``%s''", str); 68798943Sluigi *codep = val; 68898943Sluigi return; 68998943Sluigi} 69098943Sluigi 69198943Sluigistatic void 692117328Sluigiprint_reject_code(uint16_t code) 69398943Sluigi{ 694117469Sluigi char const *s = match_value(icmpcodes, code); 69598943Sluigi 69698943Sluigi if (s != NULL) 69799475Sluigi printf("unreach %s", s); 69898943Sluigi else 69999475Sluigi printf("unreach %u", code); 70098943Sluigi} 70198943Sluigi 70298943Sluigi/* 70398943Sluigi * Returns the number of bits set (from left) in a contiguous bitmask, 70498943Sluigi * or -1 if the mask is not contiguous. 70598943Sluigi * XXX this needs a proper fix. 70698943Sluigi * This effectively works on masks in big-endian (network) format. 70798943Sluigi * when compiled on little endian architectures. 70898943Sluigi * 70998943Sluigi * First bit is bit 7 of the first byte -- note, for MAC addresses, 71098943Sluigi * the first bit on the wire is bit 0 of the first byte. 71198943Sluigi * len is the max length in bits. 71298943Sluigi */ 713187770Sluigiint 714117577Sluigicontigmask(uint8_t *p, int len) 71598943Sluigi{ 71698943Sluigi int i, n; 717117577Sluigi 71898943Sluigi for (i=0; i<len ; i++) 71998943Sluigi if ( (p[i/8] & (1 << (7 - (i%8)))) == 0) /* first bit unset */ 72098943Sluigi break; 72198943Sluigi for (n=i+1; n < len; n++) 72298943Sluigi if ( (p[n/8] & (1 << (7 - (n%8)))) != 0) 72398943Sluigi return -1; /* mask not contiguous */ 72498943Sluigi return i; 72598943Sluigi} 72698943Sluigi 72798943Sluigi/* 72898943Sluigi * print flags set/clear in the two bitmasks passed as parameters. 72998943Sluigi * There is a specialized check for f_tcpflags. 73098943Sluigi */ 73198943Sluigistatic void 732117469Sluigiprint_flags(char const *name, ipfw_insn *cmd, struct _s_x *list) 73398943Sluigi{ 734117469Sluigi char const *comma = ""; 73598943Sluigi int i; 736117577Sluigi uint8_t set = cmd->arg1 & 0xff; 737117577Sluigi uint8_t clear = (cmd->arg1 >> 8) & 0xff; 73898943Sluigi 73998943Sluigi if (list == f_tcpflags && set == TH_SYN && clear == TH_ACK) { 74098943Sluigi printf(" setup"); 74198943Sluigi return; 74298943Sluigi } 74398943Sluigi 74498943Sluigi printf(" %s ", name); 74598943Sluigi for (i=0; list[i].x != 0; i++) { 74698943Sluigi if (set & list[i].x) { 74798943Sluigi set &= ~list[i].x; 74898943Sluigi printf("%s%s", comma, list[i].s); 74998943Sluigi comma = ","; 75098943Sluigi } 75198943Sluigi if (clear & list[i].x) { 75298943Sluigi clear &= ~list[i].x; 75398943Sluigi printf("%s!%s", comma, list[i].s); 75498943Sluigi comma = ","; 75598943Sluigi } 75698943Sluigi } 75798943Sluigi} 75898943Sluigi 75998943Sluigi/* 76098943Sluigi * Print the ip address contained in a command. 76198943Sluigi */ 76298943Sluigistatic void 763117469Sluigiprint_ip(ipfw_insn_ip *cmd, char const *s) 76498943Sluigi{ 76598943Sluigi struct hostent *he = NULL; 766204591Sluigi uint32_t len = F_LEN((ipfw_insn *)cmd); 767117328Sluigi uint32_t *a = ((ipfw_insn_u32 *)cmd)->d; 76898943Sluigi 769200567Sluigi if (cmd->o.opcode == O_IP_DST_LOOKUP && len > F_INSN_SIZE(ipfw_insn_u32)) { 770200567Sluigi uint32_t d = a[1]; 771200567Sluigi const char *arg = "<invalid>"; 772200567Sluigi 773200567Sluigi if (d < sizeof(lookup_key)/sizeof(lookup_key[0])) 774200567Sluigi arg = match_value(rule_options, lookup_key[d]); 775200567Sluigi printf("%s lookup %s %d", cmd->o.len & F_NOT ? " not": "", 776200567Sluigi arg, cmd->o.arg1); 777200567Sluigi return; 778200567Sluigi } 779102087Sluigi printf("%s%s ", cmd->o.len & F_NOT ? " not": "", s); 78098943Sluigi 78198943Sluigi if (cmd->o.opcode == O_IP_SRC_ME || cmd->o.opcode == O_IP_DST_ME) { 78298943Sluigi printf("me"); 78398943Sluigi return; 78498943Sluigi } 785130281Sru if (cmd->o.opcode == O_IP_SRC_LOOKUP || 786130281Sru cmd->o.opcode == O_IP_DST_LOOKUP) { 787130281Sru printf("table(%u", ((ipfw_insn *)cmd)->arg1); 788130281Sru if (len == F_INSN_SIZE(ipfw_insn_u32)) 789130281Sru printf(",%u", *a); 790130281Sru printf(")"); 791130281Sru return; 792130281Sru } 79398943Sluigi if (cmd->o.opcode == O_IP_SRC_SET || cmd->o.opcode == O_IP_DST_SET) { 794117328Sluigi uint32_t x, *map = (uint32_t *)&(cmd->mask); 795116716Sluigi int i, j; 79698943Sluigi char comma = '{'; 79798943Sluigi 79898943Sluigi x = cmd->o.arg1 - 1; 79998943Sluigi x = htonl( ~x ); 80098943Sluigi cmd->addr.s_addr = htonl(cmd->addr.s_addr); 80198943Sluigi printf("%s/%d", inet_ntoa(cmd->addr), 802117577Sluigi contigmask((uint8_t *)&x, 32)); 80398943Sluigi x = cmd->addr.s_addr = htonl(cmd->addr.s_addr); 80498943Sluigi x &= 0xff; /* base */ 805116716Sluigi /* 806116716Sluigi * Print bits and ranges. 807116716Sluigi * Locate first bit set (i), then locate first bit unset (j). 808116716Sluigi * If we have 3+ consecutive bits set, then print them as a 809116716Sluigi * range, otherwise only print the initial bit and rescan. 810116716Sluigi */ 81198943Sluigi for (i=0; i < cmd->o.arg1; i++) 812117328Sluigi if (map[i/32] & (1<<(i & 31))) { 813116716Sluigi for (j=i+1; j < cmd->o.arg1; j++) 814117328Sluigi if (!(map[ j/32] & (1<<(j & 31)))) 815116716Sluigi break; 81698943Sluigi printf("%c%d", comma, i+x); 817116716Sluigi if (j>i+2) { /* range has at least 3 elements */ 818116716Sluigi printf("-%d", j-1+x); 819116716Sluigi i = j-1; 820116716Sluigi } 82198943Sluigi comma = ','; 82298943Sluigi } 82398943Sluigi printf("}"); 82498943Sluigi return; 82598943Sluigi } 826117328Sluigi /* 827117328Sluigi * len == 2 indicates a single IP, whereas lists of 1 or more 828117328Sluigi * addr/mask pairs have len = (2n+1). We convert len to n so we 829117328Sluigi * use that to count the number of entries. 830117328Sluigi */ 831117328Sluigi for (len = len / 2; len > 0; len--, a += 2) { 832117328Sluigi int mb = /* mask length */ 833117328Sluigi (cmd->o.opcode == O_IP_SRC || cmd->o.opcode == O_IP_DST) ? 834117577Sluigi 32 : contigmask((uint8_t *)&(a[1]), 32); 835187764Sluigi if (mb == 32 && co.do_resolv) 836117328Sluigi he = gethostbyaddr((char *)&(a[0]), sizeof(u_long), AF_INET); 83798943Sluigi if (he != NULL) /* resolved to name */ 83898943Sluigi printf("%s", he->h_name); 83998943Sluigi else if (mb == 0) /* any */ 84098943Sluigi printf("any"); 84198943Sluigi else { /* numeric IP followed by some kind of mask */ 842117328Sluigi printf("%s", inet_ntoa( *((struct in_addr *)&a[0]) ) ); 84398943Sluigi if (mb < 0) 844117328Sluigi printf(":%s", inet_ntoa( *((struct in_addr *)&a[1]) ) ); 84598943Sluigi else if (mb < 32) 84698943Sluigi printf("/%d", mb); 84798943Sluigi } 848117328Sluigi if (len > 1) 849117328Sluigi printf(","); 850117328Sluigi } 85198943Sluigi} 85298943Sluigi 85398943Sluigi/* 85498943Sluigi * prints a MAC address/mask pair 85598943Sluigi */ 85698943Sluigistatic void 857117577Sluigiprint_mac(uint8_t *addr, uint8_t *mask) 85898943Sluigi{ 85998943Sluigi int l = contigmask(mask, 48); 86098943Sluigi 86198943Sluigi if (l == 0) 86298943Sluigi printf(" any"); 86398943Sluigi else { 86498943Sluigi printf(" %02x:%02x:%02x:%02x:%02x:%02x", 86598943Sluigi addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 86698943Sluigi if (l == -1) 86798943Sluigi printf("&%02x:%02x:%02x:%02x:%02x:%02x", 86898943Sluigi mask[0], mask[1], mask[2], 86998943Sluigi mask[3], mask[4], mask[5]); 87098943Sluigi else if (l < 48) 87198943Sluigi printf("/%d", l); 87298943Sluigi } 87398943Sluigi} 87498943Sluigi 87599475Sluigistatic void 87699475Sluigifill_icmptypes(ipfw_insn_u32 *cmd, char *av) 87799475Sluigi{ 878117328Sluigi uint8_t type; 87998943Sluigi 88099475Sluigi cmd->d[0] = 0; 88199475Sluigi while (*av) { 88299475Sluigi if (*av == ',') 88399475Sluigi av++; 88499475Sluigi 88599475Sluigi type = strtoul(av, &av, 0); 88699475Sluigi 88799475Sluigi if (*av != ',' && *av != '\0') 88899475Sluigi errx(EX_DATAERR, "invalid ICMP type"); 88999475Sluigi 89099475Sluigi if (type > 31) 89199475Sluigi errx(EX_DATAERR, "ICMP type out of range"); 89299475Sluigi 89399475Sluigi cmd->d[0] |= 1 << type; 89499475Sluigi } 89599475Sluigi cmd->o.opcode = O_ICMPTYPE; 89699475Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 89799475Sluigi} 89899475Sluigi 89999475Sluigistatic void 90099475Sluigiprint_icmptypes(ipfw_insn_u32 *cmd) 90199475Sluigi{ 90299475Sluigi int i; 90399475Sluigi char sep= ' '; 90499475Sluigi 90599475Sluigi printf(" icmptypes"); 90699475Sluigi for (i = 0; i < 32; i++) { 90799475Sluigi if ( (cmd->d[0] & (1 << (i))) == 0) 90899475Sluigi continue; 90999475Sluigi printf("%c%d", sep, i); 91099475Sluigi sep = ','; 91199475Sluigi } 91299475Sluigi} 91399475Sluigi 91498943Sluigi/* 91598943Sluigi * show_ipfw() prints the body of an ipfw rule. 91698943Sluigi * Because the standard rule has at least proto src_ip dst_ip, we use 91798943Sluigi * a helper function to produce these entries if not provided explicitly. 918102087Sluigi * The first argument is the list of fields we have, the second is 919102087Sluigi * the list of fields we want to be printed. 920101978Sluigi * 921102087Sluigi * Special cases if we have provided a MAC header: 922102087Sluigi * + if the rule does not contain IP addresses/ports, do not print them; 923102087Sluigi * + if the rule does not contain an IP proto, print "all" instead of "ip"; 924102087Sluigi * 925102087Sluigi * Once we have 'have_options', IP header fields are printed as options. 92698943Sluigi */ 927101978Sluigi#define HAVE_PROTO 0x0001 928101978Sluigi#define HAVE_SRCIP 0x0002 929101978Sluigi#define HAVE_DSTIP 0x0004 930169139Smaxim#define HAVE_PROTO4 0x0008 931169139Smaxim#define HAVE_PROTO6 0x0010 932205179Sluigi#define HAVE_IP 0x0100 933102087Sluigi#define HAVE_OPTIONS 0x8000 93498943Sluigi 93598943Sluigistatic void 936187477Sluigishow_prerequisites(int *flags, int want, int cmd __unused) 93798943Sluigi{ 938187764Sluigi if (co.comment_only) 939123495Sluigi return; 940102087Sluigi if ( (*flags & HAVE_IP) == HAVE_IP) 941102087Sluigi *flags |= HAVE_OPTIONS; 942102087Sluigi 943102087Sluigi if ( !(*flags & HAVE_OPTIONS)) { 944187477Sluigi if ( !(*flags & HAVE_PROTO) && (want & HAVE_PROTO)) { 945146894Smlaier if ( (*flags & HAVE_PROTO4)) 946146894Smlaier printf(" ip4"); 947146894Smlaier else if ( (*flags & HAVE_PROTO6)) 948146894Smlaier printf(" ip6"); 949146894Smlaier else 950146894Smlaier printf(" ip"); 951187477Sluigi } 952102087Sluigi if ( !(*flags & HAVE_SRCIP) && (want & HAVE_SRCIP)) 953102087Sluigi printf(" from any"); 954102087Sluigi if ( !(*flags & HAVE_DSTIP) && (want & HAVE_DSTIP)) 955102087Sluigi printf(" to any"); 956102087Sluigi } 95798943Sluigi *flags |= want; 95898943Sluigi} 95998943Sluigi 96098943Sluigistatic void 961112189Smaximshow_ipfw(struct ip_fw *rule, int pcwidth, int bcwidth) 96298943Sluigi{ 963107291Skeramida static int twidth = 0; 96498943Sluigi int l; 965158879Soleg ipfw_insn *cmd, *tagptr = NULL; 966187477Sluigi const char *comment = NULL; /* ptr to comment if we have one */ 96798943Sluigi int proto = 0; /* default */ 96898943Sluigi int flags = 0; /* prerequisites */ 96998943Sluigi ipfw_insn_log *logptr = NULL; /* set if we find an O_LOG */ 970136071Sgreen ipfw_insn_altq *altqptr = NULL; /* set if we find an O_ALTQ */ 97198943Sluigi int or_block = 0; /* we are in an or block */ 972117328Sluigi uint32_t set_disable; 97398943Sluigi 974115793Sticso bcopy(&rule->next_rule, &set_disable, sizeof(set_disable)); 975101628Sluigi 976101628Sluigi if (set_disable & (1 << rule->set)) { /* disabled */ 977187764Sluigi if (!co.show_sets) 978101628Sluigi return; 979101628Sluigi else 980101628Sluigi printf("# DISABLED "); 981101628Sluigi } 98298943Sluigi printf("%05u ", rule->rulenum); 98398943Sluigi 984206843Sluigi if (pcwidth > 0 || bcwidth > 0) { 985206843Sluigi pr_u64(&rule->pcnt, pcwidth); 986206843Sluigi pr_u64(&rule->bcnt, bcwidth); 987206843Sluigi } 98898943Sluigi 989187764Sluigi if (co.do_time == 2) 990117472Sluigi printf("%10u ", rule->timestamp); 991187764Sluigi else if (co.do_time == 1) { 992107291Skeramida char timestr[30]; 993107291Skeramida time_t t = (time_t)0; 994107291Skeramida 995107291Skeramida if (twidth == 0) { 996107291Skeramida strcpy(timestr, ctime(&t)); 997107291Skeramida *strchr(timestr, '\n') = '\0'; 998107291Skeramida twidth = strlen(timestr); 999107291Skeramida } 100098943Sluigi if (rule->timestamp) { 1001107291Skeramida t = _long_to_time(rule->timestamp); 100298943Sluigi 100398943Sluigi strcpy(timestr, ctime(&t)); 100498943Sluigi *strchr(timestr, '\n') = '\0'; 100598943Sluigi printf("%s ", timestr); 100698943Sluigi } else { 1007107291Skeramida printf("%*s", twidth, " "); 100898943Sluigi } 100998943Sluigi } 101098943Sluigi 1011187764Sluigi if (co.show_sets) 1012101628Sluigi printf("set %d ", rule->set); 1013101628Sluigi 101498943Sluigi /* 1015107289Sluigi * print the optional "match probability" 1016107289Sluigi */ 1017107289Sluigi if (rule->cmd_len > 0) { 1018107289Sluigi cmd = rule->cmd ; 1019107289Sluigi if (cmd->opcode == O_PROB) { 1020107289Sluigi ipfw_insn_u32 *p = (ipfw_insn_u32 *)cmd; 1021107289Sluigi double d = 1.0 * p->d[0]; 1022107289Sluigi 1023107289Sluigi d = (d / 0x7fffffff); 1024107289Sluigi printf("prob %f ", d); 1025107289Sluigi } 1026107289Sluigi } 1027107289Sluigi 1028107289Sluigi /* 102998943Sluigi * first print actions 103098943Sluigi */ 1031220802Sglebius for (l = rule->cmd_len - rule->act_ofs, cmd = ACTION_PTR(rule); 103298943Sluigi l > 0 ; l -= F_LEN(cmd), cmd += F_LEN(cmd)) { 103398943Sluigi switch(cmd->opcode) { 103498943Sluigi case O_CHECK_STATE: 103598943Sluigi printf("check-state"); 1036205179Sluigi /* avoid printing anything else */ 1037205179Sluigi flags = HAVE_PROTO | HAVE_SRCIP | 1038205179Sluigi HAVE_DSTIP | HAVE_IP; 103998943Sluigi break; 104098943Sluigi 104198943Sluigi case O_ACCEPT: 104298943Sluigi printf("allow"); 104398943Sluigi break; 104498943Sluigi 104598943Sluigi case O_COUNT: 104698943Sluigi printf("count"); 104798943Sluigi break; 104898943Sluigi 104998943Sluigi case O_DENY: 105098943Sluigi printf("deny"); 105198943Sluigi break; 105298943Sluigi 105399475Sluigi case O_REJECT: 105499475Sluigi if (cmd->arg1 == ICMP_REJECT_RST) 105599475Sluigi printf("reset"); 105699475Sluigi else if (cmd->arg1 == ICMP_UNREACH_HOST) 105799475Sluigi printf("reject"); 105899475Sluigi else 105999475Sluigi print_reject_code(cmd->arg1); 106099475Sluigi break; 106199475Sluigi 1062149020Sbz case O_UNREACH6: 1063149020Sbz if (cmd->arg1 == ICMP6_UNREACH_RST) 1064149020Sbz printf("reset6"); 1065149020Sbz else 1066149020Sbz print_unreach6_code(cmd->arg1); 1067149020Sbz break; 1068149020Sbz 1069159636Soleg case O_SKIPTO: 1070159636Soleg PRINT_UINT_ARG("skipto ", cmd->arg1); 107198943Sluigi break; 107298943Sluigi 107398943Sluigi case O_PIPE: 1074159636Soleg PRINT_UINT_ARG("pipe ", cmd->arg1); 1075159636Soleg break; 1076159636Soleg 107798943Sluigi case O_QUEUE: 1078159636Soleg PRINT_UINT_ARG("queue ", cmd->arg1); 1079159636Soleg break; 1080159636Soleg 108198943Sluigi case O_DIVERT: 1082159636Soleg PRINT_UINT_ARG("divert ", cmd->arg1); 1083159636Soleg break; 1084159636Soleg 108598943Sluigi case O_TEE: 1086159636Soleg PRINT_UINT_ARG("tee ", cmd->arg1); 1087159636Soleg break; 1088159636Soleg 1089141351Sglebius case O_NETGRAPH: 1090159636Soleg PRINT_UINT_ARG("netgraph ", cmd->arg1); 1091159636Soleg break; 1092159636Soleg 1093141351Sglebius case O_NGTEE: 1094159636Soleg PRINT_UINT_ARG("ngtee ", cmd->arg1); 1095159636Soleg break; 1096141351Sglebius 109798943Sluigi case O_FORWARD_IP: 109898943Sluigi { 109998943Sluigi ipfw_insn_sa *s = (ipfw_insn_sa *)cmd; 110098943Sluigi 1101161424Sjulian if (s->sa.sin_addr.s_addr == INADDR_ANY) { 1102161424Sjulian printf("fwd tablearg"); 1103161424Sjulian } else { 1104161424Sjulian printf("fwd %s", inet_ntoa(s->sa.sin_addr)); 1105161424Sjulian } 110698943Sluigi if (s->sa.sin_port) 1107103241Sluigi printf(",%d", s->sa.sin_port); 110898943Sluigi } 110998943Sluigi break; 111098943Sluigi 111198943Sluigi case O_LOG: /* O_LOG is printed last */ 111298943Sluigi logptr = (ipfw_insn_log *)cmd; 111398943Sluigi break; 111498943Sluigi 1115136071Sgreen case O_ALTQ: /* O_ALTQ is printed after O_LOG */ 1116136071Sgreen altqptr = (ipfw_insn_altq *)cmd; 1117136071Sgreen break; 1118136071Sgreen 1119158879Soleg case O_TAG: 1120158879Soleg tagptr = cmd; 1121158879Soleg break; 1122158879Soleg 1123165648Spiso case O_NAT: 1124176517Spiso PRINT_UINT_ARG("nat ", cmd->arg1); 1125165648Spiso break; 1126165648Spiso 1127178888Sjulian case O_SETFIB: 1128178888Sjulian PRINT_UINT_ARG("setfib ", cmd->arg1); 1129178888Sjulian break; 1130190633Spiso 1131190633Spiso case O_REASS: 1132190633Spiso printf("reass"); 1133190633Spiso break; 1134178888Sjulian 113598943Sluigi default: 1136136071Sgreen printf("** unrecognized action %d len %d ", 113798943Sluigi cmd->opcode, cmd->len); 113898943Sluigi } 113998943Sluigi } 114098943Sluigi if (logptr) { 114198943Sluigi if (logptr->max_log > 0) 114299909Sluigi printf(" log logamount %d", logptr->max_log); 114398943Sluigi else 114499909Sluigi printf(" log"); 114598943Sluigi } 1146204591Sluigi#ifndef NO_ALTQ 1147136071Sgreen if (altqptr) { 1148187983Sluigi print_altq_cmd(altqptr); 1149136071Sgreen } 1150204591Sluigi#endif 1151158879Soleg if (tagptr) { 1152158879Soleg if (tagptr->len & F_NOT) 1153159636Soleg PRINT_UINT_ARG(" untag ", tagptr->arg1); 1154158879Soleg else 1155159636Soleg PRINT_UINT_ARG(" tag ", tagptr->arg1); 1156158879Soleg } 1157136071Sgreen 115898943Sluigi /* 1159102087Sluigi * then print the body. 116098943Sluigi */ 1161220802Sglebius for (l = rule->act_ofs, cmd = rule->cmd ; 1162146894Smlaier l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 1163146894Smlaier if ((cmd->len & F_OR) || (cmd->len & F_NOT)) 1164146894Smlaier continue; 1165146894Smlaier if (cmd->opcode == O_IP4) { 1166146894Smlaier flags |= HAVE_PROTO4; 1167146894Smlaier break; 1168146894Smlaier } else if (cmd->opcode == O_IP6) { 1169146894Smlaier flags |= HAVE_PROTO6; 1170146894Smlaier break; 1171146894Smlaier } 1172146894Smlaier } 1173102087Sluigi if (rule->_pad & 1) { /* empty rules before options */ 1174187764Sluigi if (!co.do_compact) { 1175146894Smlaier show_prerequisites(&flags, HAVE_PROTO, 0); 1176146894Smlaier printf(" from any to any"); 1177146894Smlaier } 1178205179Sluigi flags |= HAVE_IP | HAVE_OPTIONS | HAVE_PROTO | 1179205179Sluigi HAVE_SRCIP | HAVE_DSTIP; 1180102087Sluigi } 1181102087Sluigi 1182187764Sluigi if (co.comment_only) 1183123495Sluigi comment = "..."; 1184123495Sluigi 1185220802Sglebius for (l = rule->act_ofs, cmd = rule->cmd ; 118698943Sluigi l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 118799475Sluigi /* useful alias */ 118899475Sluigi ipfw_insn_u32 *cmd32 = (ipfw_insn_u32 *)cmd; 118998943Sluigi 1190187764Sluigi if (co.comment_only) { 1191123495Sluigi if (cmd->opcode != O_NOP) 1192123495Sluigi continue; 1193123495Sluigi printf(" // %s\n", (char *)(cmd + 1)); 1194123495Sluigi return; 1195123495Sluigi } 1196123495Sluigi 1197102087Sluigi show_prerequisites(&flags, 0, cmd->opcode); 1198102087Sluigi 119998943Sluigi switch(cmd->opcode) { 1200117577Sluigi case O_PROB: 1201107289Sluigi break; /* done already */ 1202107289Sluigi 120398943Sluigi case O_PROBE_STATE: 120498943Sluigi break; /* no need to print anything here */ 120598943Sluigi 120698943Sluigi case O_IP_SRC: 1207130281Sru case O_IP_SRC_LOOKUP: 120898943Sluigi case O_IP_SRC_MASK: 120998943Sluigi case O_IP_SRC_ME: 121098943Sluigi case O_IP_SRC_SET: 1211102087Sluigi show_prerequisites(&flags, HAVE_PROTO, 0); 121298943Sluigi if (!(flags & HAVE_SRCIP)) 121398943Sluigi printf(" from"); 121498943Sluigi if ((cmd->len & F_OR) && !or_block) 121598943Sluigi printf(" {"); 1216102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1217102087Sluigi (flags & HAVE_OPTIONS) ? " src-ip" : ""); 121898943Sluigi flags |= HAVE_SRCIP; 121998943Sluigi break; 122098943Sluigi 122198943Sluigi case O_IP_DST: 1222130281Sru case O_IP_DST_LOOKUP: 122398943Sluigi case O_IP_DST_MASK: 122498943Sluigi case O_IP_DST_ME: 122598943Sluigi case O_IP_DST_SET: 1226102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 122798943Sluigi if (!(flags & HAVE_DSTIP)) 122898943Sluigi printf(" to"); 122998943Sluigi if ((cmd->len & F_OR) && !or_block) 123098943Sluigi printf(" {"); 1231102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1232102087Sluigi (flags & HAVE_OPTIONS) ? " dst-ip" : ""); 123398943Sluigi flags |= HAVE_DSTIP; 123498943Sluigi break; 123598943Sluigi 1236145246Sbrooks case O_IP6_SRC: 1237145246Sbrooks case O_IP6_SRC_MASK: 1238145246Sbrooks case O_IP6_SRC_ME: 1239147105Smlaier show_prerequisites(&flags, HAVE_PROTO, 0); 1240145246Sbrooks if (!(flags & HAVE_SRCIP)) 1241145246Sbrooks printf(" from"); 1242145246Sbrooks if ((cmd->len & F_OR) && !or_block) 1243145246Sbrooks printf(" {"); 1244145246Sbrooks print_ip6((ipfw_insn_ip6 *)cmd, 1245145246Sbrooks (flags & HAVE_OPTIONS) ? " src-ip6" : ""); 1246145246Sbrooks flags |= HAVE_SRCIP | HAVE_PROTO; 1247145246Sbrooks break; 1248145246Sbrooks 1249145246Sbrooks case O_IP6_DST: 1250145246Sbrooks case O_IP6_DST_MASK: 1251145246Sbrooks case O_IP6_DST_ME: 1252145246Sbrooks show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 1253145246Sbrooks if (!(flags & HAVE_DSTIP)) 1254145246Sbrooks printf(" to"); 1255145246Sbrooks if ((cmd->len & F_OR) && !or_block) 1256145246Sbrooks printf(" {"); 1257145246Sbrooks print_ip6((ipfw_insn_ip6 *)cmd, 1258145246Sbrooks (flags & HAVE_OPTIONS) ? " dst-ip6" : ""); 1259145246Sbrooks flags |= HAVE_DSTIP; 1260145246Sbrooks break; 1261145246Sbrooks 1262145246Sbrooks case O_FLOW6ID: 1263145246Sbrooks print_flow6id( (ipfw_insn_u32 *) cmd ); 1264145246Sbrooks flags |= HAVE_OPTIONS; 1265145246Sbrooks break; 1266145246Sbrooks 126798943Sluigi case O_IP_DSTPORT: 1268205179Sluigi show_prerequisites(&flags, 1269205179Sluigi HAVE_PROTO | HAVE_SRCIP | 1270205179Sluigi HAVE_DSTIP | HAVE_IP, 0); 127198943Sluigi case O_IP_SRCPORT: 1272205179Sluigi show_prerequisites(&flags, 1273205179Sluigi HAVE_PROTO | HAVE_SRCIP, 0); 1274101641Sluigi if ((cmd->len & F_OR) && !or_block) 1275101641Sluigi printf(" {"); 1276172306Smaxim if (cmd->len & F_NOT) 1277172306Smaxim printf(" not"); 1278102087Sluigi print_newports((ipfw_insn_u16 *)cmd, proto, 1279102087Sluigi (flags & HAVE_OPTIONS) ? cmd->opcode : 0); 128098943Sluigi break; 128198943Sluigi 128298943Sluigi case O_PROTO: { 1283145246Sbrooks struct protoent *pe = NULL; 128498943Sluigi 128598943Sluigi if ((cmd->len & F_OR) && !or_block) 128698943Sluigi printf(" {"); 128798943Sluigi if (cmd->len & F_NOT) 128898943Sluigi printf(" not"); 128998943Sluigi proto = cmd->arg1; 1290145567Sbrooks pe = getprotobynumber(cmd->arg1); 1291146894Smlaier if ((flags & (HAVE_PROTO4 | HAVE_PROTO6)) && 1292146894Smlaier !(flags & HAVE_PROTO)) 1293146894Smlaier show_prerequisites(&flags, 1294205179Sluigi HAVE_PROTO | HAVE_IP | HAVE_SRCIP | 1295205179Sluigi HAVE_DSTIP | HAVE_OPTIONS, 0); 1296102087Sluigi if (flags & HAVE_OPTIONS) 1297102087Sluigi printf(" proto"); 129898943Sluigi if (pe) 129998943Sluigi printf(" %s", pe->p_name); 130098943Sluigi else 130198943Sluigi printf(" %u", cmd->arg1); 130298943Sluigi } 130398943Sluigi flags |= HAVE_PROTO; 130498943Sluigi break; 1305106505Smaxim 130698943Sluigi default: /*options ... */ 1307146894Smlaier if (!(cmd->len & (F_OR|F_NOT))) 1308146894Smlaier if (((cmd->opcode == O_IP6) && 1309146894Smlaier (flags & HAVE_PROTO6)) || 1310146894Smlaier ((cmd->opcode == O_IP4) && 1311146894Smlaier (flags & HAVE_PROTO4))) 1312146894Smlaier break; 1313205179Sluigi show_prerequisites(&flags, HAVE_PROTO | HAVE_SRCIP | 1314205179Sluigi HAVE_DSTIP | HAVE_IP | HAVE_OPTIONS, 0); 131598943Sluigi if ((cmd->len & F_OR) && !or_block) 131698943Sluigi printf(" {"); 131798943Sluigi if (cmd->len & F_NOT && cmd->opcode != O_IN) 131898943Sluigi printf(" not"); 131998943Sluigi switch(cmd->opcode) { 1320169139Smaxim case O_MACADDR2: { 1321169139Smaxim ipfw_insn_mac *m = (ipfw_insn_mac *)cmd; 1322169139Smaxim 1323169139Smaxim printf(" MAC"); 1324169139Smaxim print_mac(m->addr, m->mask); 1325169139Smaxim print_mac(m->addr + 6, m->mask + 6); 1326169139Smaxim } 1327169139Smaxim break; 1328169139Smaxim 1329169139Smaxim case O_MAC_TYPE: 1330169139Smaxim print_newports((ipfw_insn_u16 *)cmd, 1331169139Smaxim IPPROTO_ETHERTYPE, cmd->opcode); 1332169139Smaxim break; 1333169139Smaxim 1334169139Smaxim 133598943Sluigi case O_FRAG: 133698943Sluigi printf(" frag"); 133798943Sluigi break; 133898943Sluigi 1339178888Sjulian case O_FIB: 1340178888Sjulian printf(" fib %u", cmd->arg1 ); 1341178888Sjulian break; 1342215179Sluigi case O_SOCKARG: 1343215179Sluigi printf(" sockarg"); 1344215179Sluigi break; 1345178888Sjulian 134698943Sluigi case O_IN: 134798943Sluigi printf(cmd->len & F_NOT ? " out" : " in"); 134898943Sluigi break; 134998943Sluigi 1350136073Sgreen case O_DIVERTED: 1351136073Sgreen switch (cmd->arg1) { 1352136073Sgreen case 3: 1353136073Sgreen printf(" diverted"); 1354136073Sgreen break; 1355136073Sgreen case 1: 1356136073Sgreen printf(" diverted-loopback"); 1357136073Sgreen break; 1358136073Sgreen case 2: 1359136073Sgreen printf(" diverted-output"); 1360136073Sgreen break; 1361136073Sgreen default: 1362136073Sgreen printf(" diverted-?<%u>", cmd->arg1); 1363136073Sgreen break; 1364136073Sgreen } 1365136073Sgreen break; 1366136073Sgreen 136798943Sluigi case O_LAYER2: 136898943Sluigi printf(" layer2"); 136998943Sluigi break; 137098943Sluigi case O_XMIT: 137198943Sluigi case O_RECV: 1372140423Sglebius case O_VIA: 1373140423Sglebius { 1374117469Sluigi char const *s; 137598943Sluigi ipfw_insn_if *cmdif = (ipfw_insn_if *)cmd; 137698943Sluigi 137798943Sluigi if (cmd->opcode == O_XMIT) 137898943Sluigi s = "xmit"; 137998943Sluigi else if (cmd->opcode == O_RECV) 138098943Sluigi s = "recv"; 1381117469Sluigi else /* if (cmd->opcode == O_VIA) */ 138298943Sluigi s = "via"; 138398943Sluigi if (cmdif->name[0] == '\0') 138499475Sluigi printf(" %s %s", s, 138599475Sluigi inet_ntoa(cmdif->p.ip)); 1386140423Sglebius else 1387140423Sglebius printf(" %s %s", s, cmdif->name); 1388140423Sglebius 138998943Sluigi break; 1390140423Sglebius } 139198943Sluigi case O_IPID: 1392116690Sluigi if (F_LEN(cmd) == 1) 1393116690Sluigi printf(" ipid %u", cmd->arg1 ); 1394116690Sluigi else 1395116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1396116690Sluigi O_IPID); 139798943Sluigi break; 139898943Sluigi 139998943Sluigi case O_IPTTL: 1400116690Sluigi if (F_LEN(cmd) == 1) 1401116690Sluigi printf(" ipttl %u", cmd->arg1 ); 1402116690Sluigi else 1403116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1404116690Sluigi O_IPTTL); 140598943Sluigi break; 140698943Sluigi 140798943Sluigi case O_IPVER: 140898943Sluigi printf(" ipver %u", cmd->arg1 ); 140998943Sluigi break; 141098943Sluigi 141199475Sluigi case O_IPPRECEDENCE: 141299475Sluigi printf(" ipprecedence %u", (cmd->arg1) >> 5 ); 141399475Sluigi break; 141499475Sluigi 141598943Sluigi case O_IPLEN: 1416116690Sluigi if (F_LEN(cmd) == 1) 1417116690Sluigi printf(" iplen %u", cmd->arg1 ); 1418116690Sluigi else 1419116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1420116690Sluigi O_IPLEN); 142198943Sluigi break; 142298943Sluigi 1423101116Sluigi case O_IPOPT: 142498943Sluigi print_flags("ipoptions", cmd, f_ipopts); 142598943Sluigi break; 142698943Sluigi 142799475Sluigi case O_IPTOS: 142899475Sluigi print_flags("iptos", cmd, f_iptos); 142999475Sluigi break; 143099475Sluigi 143199475Sluigi case O_ICMPTYPE: 143299475Sluigi print_icmptypes((ipfw_insn_u32 *)cmd); 143399475Sluigi break; 143499475Sluigi 143598943Sluigi case O_ESTAB: 143698943Sluigi printf(" established"); 143798943Sluigi break; 143898943Sluigi 1439136075Sgreen case O_TCPDATALEN: 1440136075Sgreen if (F_LEN(cmd) == 1) 1441136075Sgreen printf(" tcpdatalen %u", cmd->arg1 ); 1442136075Sgreen else 1443136075Sgreen print_newports((ipfw_insn_u16 *)cmd, 0, 1444136075Sgreen O_TCPDATALEN); 1445136075Sgreen break; 1446136075Sgreen 144798943Sluigi case O_TCPFLAGS: 144898943Sluigi print_flags("tcpflags", cmd, f_tcpflags); 144998943Sluigi break; 145098943Sluigi 145198943Sluigi case O_TCPOPTS: 145298943Sluigi print_flags("tcpoptions", cmd, f_tcpopts); 145398943Sluigi break; 145498943Sluigi 145598943Sluigi case O_TCPWIN: 145698943Sluigi printf(" tcpwin %d", ntohs(cmd->arg1)); 145798943Sluigi break; 145898943Sluigi 145998943Sluigi case O_TCPACK: 146098943Sluigi printf(" tcpack %d", ntohl(cmd32->d[0])); 146198943Sluigi break; 146298943Sluigi 146398943Sluigi case O_TCPSEQ: 146498943Sluigi printf(" tcpseq %d", ntohl(cmd32->d[0])); 146598943Sluigi break; 146698943Sluigi 146798943Sluigi case O_UID: 146898943Sluigi { 146998943Sluigi struct passwd *pwd = getpwuid(cmd32->d[0]); 147098943Sluigi 147198943Sluigi if (pwd) 147298943Sluigi printf(" uid %s", pwd->pw_name); 147398943Sluigi else 147498943Sluigi printf(" uid %u", cmd32->d[0]); 147598943Sluigi } 147698943Sluigi break; 147798943Sluigi 147898943Sluigi case O_GID: 147998943Sluigi { 148098943Sluigi struct group *grp = getgrgid(cmd32->d[0]); 148198943Sluigi 148298943Sluigi if (grp) 148398943Sluigi printf(" gid %s", grp->gr_name); 148498943Sluigi else 148598943Sluigi printf(" gid %u", cmd32->d[0]); 148698943Sluigi } 148798943Sluigi break; 148898943Sluigi 1489133600Scsjp case O_JAIL: 1490133600Scsjp printf(" jail %d", cmd32->d[0]); 1491133600Scsjp break; 1492133600Scsjp 1493112250Scjc case O_VERREVPATH: 1494112250Scjc printf(" verrevpath"); 1495112250Scjc break; 1496116919Sluigi 1497128575Sandre case O_VERSRCREACH: 1498128575Sandre printf(" versrcreach"); 1499128575Sandre break; 1500128575Sandre 1501133387Sandre case O_ANTISPOOF: 1502133387Sandre printf(" antispoof"); 1503133387Sandre break; 1504133387Sandre 1505117241Sluigi case O_IPSEC: 1506117241Sluigi printf(" ipsec"); 1507117241Sluigi break; 1508117241Sluigi 1509117469Sluigi case O_NOP: 1510117626Sluigi comment = (char *)(cmd + 1); 1511117469Sluigi break; 1512117469Sluigi 151398943Sluigi case O_KEEP_STATE: 151498943Sluigi printf(" keep-state"); 151598943Sluigi break; 151698943Sluigi 1517159636Soleg case O_LIMIT: { 151898943Sluigi struct _s_x *p = limit_masks; 151998943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 1520117328Sluigi uint8_t x = c->limit_mask; 1521117469Sluigi char const *comma = " "; 152298943Sluigi 152398943Sluigi printf(" limit"); 1524117577Sluigi for (; p->x != 0 ; p++) 152599909Sluigi if ((x & p->x) == p->x) { 152698943Sluigi x &= ~p->x; 152798943Sluigi printf("%s%s", comma, p->s); 152898943Sluigi comma = ","; 152998943Sluigi } 1530159636Soleg PRINT_UINT_ARG(" ", c->conn_limit); 153198943Sluigi break; 1532159636Soleg } 153398943Sluigi 1534146894Smlaier case O_IP6: 1535152923Sume printf(" ip6"); 1536145246Sbrooks break; 1537145246Sbrooks 1538146894Smlaier case O_IP4: 1539152923Sume printf(" ip4"); 1540146894Smlaier break; 1541146894Smlaier 1542145246Sbrooks case O_ICMP6TYPE: 1543145246Sbrooks print_icmp6types((ipfw_insn_u32 *)cmd); 1544145246Sbrooks break; 1545145246Sbrooks 1546145246Sbrooks case O_EXT_HDR: 1547145246Sbrooks print_ext6hdr( (ipfw_insn *) cmd ); 1548145246Sbrooks break; 1549145246Sbrooks 1550158879Soleg case O_TAGGED: 1551158879Soleg if (F_LEN(cmd) == 1) 1552159636Soleg PRINT_UINT_ARG(" tagged ", cmd->arg1); 1553158879Soleg else 1554159636Soleg print_newports((ipfw_insn_u16 *)cmd, 0, 1555159636Soleg O_TAGGED); 1556158879Soleg break; 1557158879Soleg 155898943Sluigi default: 155998943Sluigi printf(" [opcode %d len %d]", 156098943Sluigi cmd->opcode, cmd->len); 156198943Sluigi } 156298943Sluigi } 156398943Sluigi if (cmd->len & F_OR) { 156498943Sluigi printf(" or"); 156598943Sluigi or_block = 1; 156698943Sluigi } else if (or_block) { 156798943Sluigi printf(" }"); 156898943Sluigi or_block = 0; 156998943Sluigi } 157098943Sluigi } 1571205179Sluigi show_prerequisites(&flags, HAVE_PROTO | HAVE_SRCIP | HAVE_DSTIP 1572220802Sglebius | HAVE_IP, 0); 1573117626Sluigi if (comment) 1574117626Sluigi printf(" // %s", comment); 157598943Sluigi printf("\n"); 157698943Sluigi} 157798943Sluigi 157898943Sluigistatic void 1579112189Smaximshow_dyn_ipfw(ipfw_dyn_rule *d, int pcwidth, int bcwidth) 158098943Sluigi{ 158198943Sluigi struct protoent *pe; 158298943Sluigi struct in_addr a; 1583115793Sticso uint16_t rulenum; 1584159160Smlaier char buf[INET6_ADDRSTRLEN]; 158598943Sluigi 1586187764Sluigi if (!co.do_expired) { 158798943Sluigi if (!d->expire && !(d->dyn_type == O_LIMIT_PARENT)) 158898943Sluigi return; 158998943Sluigi } 1590115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 1591117328Sluigi printf("%05d", rulenum); 1592206843Sluigi if (pcwidth > 0 || bcwidth > 0) { 1593206843Sluigi printf(" "); 1594206843Sluigi pr_u64(&d->pcnt, pcwidth); 1595206843Sluigi pr_u64(&d->bcnt, bcwidth); 1596206843Sluigi printf("(%ds)", d->expire); 1597206843Sluigi } 159898943Sluigi switch (d->dyn_type) { 159998943Sluigi case O_LIMIT_PARENT: 160098943Sluigi printf(" PARENT %d", d->count); 160198943Sluigi break; 160298943Sluigi case O_LIMIT: 160398943Sluigi printf(" LIMIT"); 160498943Sluigi break; 160598943Sluigi case O_KEEP_STATE: /* bidir, no mask */ 1606106505Smaxim printf(" STATE"); 160798943Sluigi break; 160898943Sluigi } 160998943Sluigi 161098943Sluigi if ((pe = getprotobynumber(d->id.proto)) != NULL) 161198943Sluigi printf(" %s", pe->p_name); 161298943Sluigi else 161398943Sluigi printf(" proto %u", d->id.proto); 161498943Sluigi 1615159160Smlaier if (d->id.addr_type == 4) { 1616159160Smlaier a.s_addr = htonl(d->id.src_ip); 1617159160Smlaier printf(" %s %d", inet_ntoa(a), d->id.src_port); 161898943Sluigi 1619159160Smlaier a.s_addr = htonl(d->id.dst_ip); 1620159160Smlaier printf(" <-> %s %d", inet_ntoa(a), d->id.dst_port); 1621159160Smlaier } else if (d->id.addr_type == 6) { 1622159160Smlaier printf(" %s %d", inet_ntop(AF_INET6, &d->id.src_ip6, buf, 1623159160Smlaier sizeof(buf)), d->id.src_port); 1624159160Smlaier printf(" <-> %s %d", inet_ntop(AF_INET6, &d->id.dst_ip6, buf, 1625159160Smlaier sizeof(buf)), d->id.dst_port); 1626159160Smlaier } else 1627159160Smlaier printf(" UNKNOWN <-> UNKNOWN\n"); 1628159160Smlaier 162998943Sluigi printf("\n"); 163098943Sluigi} 163198943Sluigi 1632101978Sluigi/* 1633101978Sluigi * This one handles all set-related commands 1634101978Sluigi * ipfw set { show | enable | disable } 1635101978Sluigi * ipfw set swap X Y 1636101978Sluigi * ipfw set move X to Y 1637101978Sluigi * ipfw set move rule X to Y 1638101978Sluigi */ 1639187767Sluigivoid 1640204591Sluigiipfw_sets_handler(char *av[]) 1641101978Sluigi{ 1642117328Sluigi uint32_t set_disable, masks[2]; 1643101978Sluigi int i, nbytes; 1644117328Sluigi uint16_t rulenum; 1645117328Sluigi uint8_t cmd, new_set; 1646101978Sluigi 1647101978Sluigi av++; 1648101978Sluigi 1649204591Sluigi if (av[0] == NULL) 1650101978Sluigi errx(EX_USAGE, "set needs command"); 1651140271Sbrooks if (_substrcmp(*av, "show") == 0) { 1652204717Sluigi void *data = NULL; 1653117469Sluigi char const *msg; 1654204717Sluigi int nalloc; 1655101978Sluigi 1656204717Sluigi nalloc = nbytes = sizeof(struct ip_fw); 1657204717Sluigi while (nbytes >= nalloc) { 1658204717Sluigi if (data) 1659204717Sluigi free(data); 1660204717Sluigi nalloc = nalloc * 2 + 200; 1661204717Sluigi nbytes = nalloc; 1662206843Sluigi data = safe_calloc(1, nbytes); 1663206843Sluigi if (do_cmd(IP_FW_GET, data, (uintptr_t)&nbytes) < 0) 1664206843Sluigi err(EX_OSERR, "getsockopt(IP_FW_GET)"); 1665204717Sluigi } 1666204717Sluigi 1667115793Sticso bcopy(&((struct ip_fw *)data)->next_rule, 1668115793Sticso &set_disable, sizeof(set_disable)); 1669101978Sluigi 1670117655Sluigi for (i = 0, msg = "disable" ; i < RESVD_SET; i++) 1671117577Sluigi if ((set_disable & (1<<i))) { 1672101978Sluigi printf("%s %d", msg, i); 1673101978Sluigi msg = ""; 1674101978Sluigi } 1675101978Sluigi msg = (set_disable) ? " enable" : "enable"; 1676117655Sluigi for (i = 0; i < RESVD_SET; i++) 1677117577Sluigi if (!(set_disable & (1<<i))) { 1678101978Sluigi printf("%s %d", msg, i); 1679101978Sluigi msg = ""; 1680101978Sluigi } 1681101978Sluigi printf("\n"); 1682140271Sbrooks } else if (_substrcmp(*av, "swap") == 0) { 1683204591Sluigi av++; 1684204591Sluigi if ( av[0] == NULL || av[1] == NULL ) 1685101978Sluigi errx(EX_USAGE, "set swap needs 2 set numbers\n"); 1686101978Sluigi rulenum = atoi(av[0]); 1687101978Sluigi new_set = atoi(av[1]); 1688117655Sluigi if (!isdigit(*(av[0])) || rulenum > RESVD_SET) 1689101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[0]); 1690117655Sluigi if (!isdigit(*(av[1])) || new_set > RESVD_SET) 1691101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[1]); 1692101978Sluigi masks[0] = (4 << 24) | (new_set << 16) | (rulenum); 1693117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(uint32_t)); 1694140271Sbrooks } else if (_substrcmp(*av, "move") == 0) { 1695204591Sluigi av++; 1696204717Sluigi if (av[0] && _substrcmp(*av, "rule") == 0) { 1697101978Sluigi cmd = 2; 1698204591Sluigi av++; 1699101978Sluigi } else 1700101978Sluigi cmd = 3; 1701204591Sluigi if (av[0] == NULL || av[1] == NULL || av[2] == NULL || 1702204591Sluigi av[3] != NULL || _substrcmp(av[1], "to") != 0) 1703101978Sluigi errx(EX_USAGE, "syntax: set move [rule] X to Y\n"); 1704101978Sluigi rulenum = atoi(av[0]); 1705101978Sluigi new_set = atoi(av[2]); 1706117655Sluigi if (!isdigit(*(av[0])) || (cmd == 3 && rulenum > RESVD_SET) || 1707182823Srik (cmd == 2 && rulenum == IPFW_DEFAULT_RULE) ) 1708101978Sluigi errx(EX_DATAERR, "invalid source number %s\n", av[0]); 1709117655Sluigi if (!isdigit(*(av[2])) || new_set > RESVD_SET) 1710101978Sluigi errx(EX_DATAERR, "invalid dest. set %s\n", av[1]); 1711101978Sluigi masks[0] = (cmd << 24) | (new_set << 16) | (rulenum); 1712117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(uint32_t)); 1713140271Sbrooks } else if (_substrcmp(*av, "disable") == 0 || 1714140271Sbrooks _substrcmp(*av, "enable") == 0 ) { 1715140271Sbrooks int which = _substrcmp(*av, "enable") == 0 ? 1 : 0; 1716101978Sluigi 1717204591Sluigi av++; 1718101978Sluigi masks[0] = masks[1] = 0; 1719101978Sluigi 1720204717Sluigi while (av[0]) { 1721101978Sluigi if (isdigit(**av)) { 1722101978Sluigi i = atoi(*av); 1723117655Sluigi if (i < 0 || i > RESVD_SET) 1724101978Sluigi errx(EX_DATAERR, 1725101978Sluigi "invalid set number %d\n", i); 1726101978Sluigi masks[which] |= (1<<i); 1727140271Sbrooks } else if (_substrcmp(*av, "disable") == 0) 1728101978Sluigi which = 0; 1729140271Sbrooks else if (_substrcmp(*av, "enable") == 0) 1730101978Sluigi which = 1; 1731101978Sluigi else 1732101978Sluigi errx(EX_DATAERR, 1733101978Sluigi "invalid set command %s\n", *av); 1734204591Sluigi av++; 1735101978Sluigi } 1736101978Sluigi if ( (masks[0] & masks[1]) != 0 ) 1737101978Sluigi errx(EX_DATAERR, 1738101978Sluigi "cannot enable and disable the same set\n"); 1739101978Sluigi 1740117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(masks)); 1741101978Sluigi if (i) 1742101978Sluigi warn("set enable/disable: setsockopt(IP_FW_DEL)"); 1743101978Sluigi } else 1744101978Sluigi errx(EX_USAGE, "invalid set command %s\n", *av); 1745101978Sluigi} 1746101978Sluigi 1747187767Sluigivoid 1748204591Sluigiipfw_sysctl_handler(char *av[], int which) 1749109126Sdillon{ 1750109126Sdillon av++; 1751109126Sdillon 1752204591Sluigi if (av[0] == NULL) { 1753109126Sdillon warnx("missing keyword to enable/disable\n"); 1754140271Sbrooks } else if (_substrcmp(*av, "firewall") == 0) { 1755116770Sluigi sysctlbyname("net.inet.ip.fw.enable", NULL, 0, 1756116770Sluigi &which, sizeof(which)); 1757206266Sume sysctlbyname("net.inet6.ip6.fw.enable", NULL, 0, 1758206266Sume &which, sizeof(which)); 1759140271Sbrooks } else if (_substrcmp(*av, "one_pass") == 0) { 1760116770Sluigi sysctlbyname("net.inet.ip.fw.one_pass", NULL, 0, 1761116770Sluigi &which, sizeof(which)); 1762140271Sbrooks } else if (_substrcmp(*av, "debug") == 0) { 1763116770Sluigi sysctlbyname("net.inet.ip.fw.debug", NULL, 0, 1764116770Sluigi &which, sizeof(which)); 1765140271Sbrooks } else if (_substrcmp(*av, "verbose") == 0) { 1766116770Sluigi sysctlbyname("net.inet.ip.fw.verbose", NULL, 0, 1767116770Sluigi &which, sizeof(which)); 1768140271Sbrooks } else if (_substrcmp(*av, "dyn_keepalive") == 0) { 1769116770Sluigi sysctlbyname("net.inet.ip.fw.dyn_keepalive", NULL, 0, 1770116770Sluigi &which, sizeof(which)); 1771204591Sluigi#ifndef NO_ALTQ 1772140271Sbrooks } else if (_substrcmp(*av, "altq") == 0) { 1773136071Sgreen altq_set_enabled(which); 1774204591Sluigi#endif 1775109126Sdillon } else { 1776109126Sdillon warnx("unrecognize enable/disable keyword: %s\n", *av); 1777109126Sdillon } 1778109126Sdillon} 1779109126Sdillon 1780187767Sluigivoid 1781187767Sluigiipfw_list(int ac, char *av[], int show_counters) 178298943Sluigi{ 178398943Sluigi struct ip_fw *r; 178498943Sluigi ipfw_dyn_rule *dynrules, *d; 178598943Sluigi 1786117469Sluigi#define NEXT(r) ((struct ip_fw *)((char *)r + RULESIZE(r))) 1787117469Sluigi char *lim; 1788117469Sluigi void *data = NULL; 1789112189Smaxim int bcwidth, n, nbytes, nstat, ndyn, pcwidth, width; 179098943Sluigi int exitval = EX_OK; 179198943Sluigi int lac; 179298943Sluigi char **lav; 1793117469Sluigi u_long rnum, last; 179498943Sluigi char *endptr; 179598943Sluigi int seen = 0; 1796170923Smaxim uint8_t set; 179798943Sluigi 1798187764Sluigi const int ocmd = co.do_pipe ? IP_DUMMYNET_GET : IP_FW_GET; 179998943Sluigi int nalloc = 1024; /* start somewhere... */ 180098943Sluigi 1801135036Smaxim last = 0; 1802135036Smaxim 1803187764Sluigi if (co.test_only) { 1804117328Sluigi fprintf(stderr, "Testing only, list disabled\n"); 1805117328Sluigi return; 1806117328Sluigi } 1807204591Sluigi if (co.do_pipe) { 1808204591Sluigi dummynet_list(ac, av, show_counters); 1809204591Sluigi return; 1810204591Sluigi } 1811117328Sluigi 181298943Sluigi ac--; 181398943Sluigi av++; 181498943Sluigi 181598943Sluigi /* get rules or pipes from kernel, resizing array as necessary */ 181698943Sluigi nbytes = nalloc; 181798943Sluigi 181898943Sluigi while (nbytes >= nalloc) { 181998943Sluigi nalloc = nalloc * 2 + 200; 182098943Sluigi nbytes = nalloc; 1821187716Sluigi data = safe_realloc(data, nbytes); 1822119740Stmm if (do_cmd(ocmd, data, (uintptr_t)&nbytes) < 0) 182398943Sluigi err(EX_OSERR, "getsockopt(IP_%s_GET)", 1824187764Sluigi co.do_pipe ? "DUMMYNET" : "FW"); 182598943Sluigi } 182698943Sluigi 182798943Sluigi /* 182898943Sluigi * Count static rules. They have variable size so we 182998943Sluigi * need to scan the list to count them. 183098943Sluigi */ 1831117469Sluigi for (nstat = 1, r = data, lim = (char *)data + nbytes; 1832182823Srik r->rulenum < IPFW_DEFAULT_RULE && (char *)r < lim; 1833117469Sluigi ++nstat, r = NEXT(r) ) 183498943Sluigi ; /* nothing */ 183598943Sluigi 183698943Sluigi /* 183798943Sluigi * Count dynamic rules. This is easier as they have 183898943Sluigi * fixed size. 183998943Sluigi */ 1840117469Sluigi r = NEXT(r); 184198943Sluigi dynrules = (ipfw_dyn_rule *)r ; 1842117469Sluigi n = (char *)r - (char *)data; 184398943Sluigi ndyn = (nbytes - n) / sizeof *dynrules; 184498943Sluigi 1845112189Smaxim /* if showing stats, figure out column widths ahead of time */ 1846112189Smaxim bcwidth = pcwidth = 0; 1847117469Sluigi if (show_counters) { 1848117469Sluigi for (n = 0, r = data; n < nstat; n++, r = NEXT(r)) { 1849170923Smaxim /* skip rules from another set */ 1850187764Sluigi if (co.use_set && r->set != co.use_set - 1) 1851170923Smaxim continue; 1852170923Smaxim 1853112189Smaxim /* packet counter */ 1854206843Sluigi width = pr_u64(&r->pcnt, 0); 1855112189Smaxim if (width > pcwidth) 1856112189Smaxim pcwidth = width; 1857112189Smaxim 1858112189Smaxim /* byte counter */ 1859206843Sluigi width = pr_u64(&r->bcnt, 0); 1860112189Smaxim if (width > bcwidth) 1861112189Smaxim bcwidth = width; 1862112189Smaxim } 1863112189Smaxim } 1864187764Sluigi if (co.do_dynamic && ndyn) { 1865112189Smaxim for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1866187764Sluigi if (co.use_set) { 1867170923Smaxim /* skip rules from another set */ 1868171989Smaxim bcopy((char *)&d->rule + sizeof(uint16_t), 1869170923Smaxim &set, sizeof(uint8_t)); 1870187764Sluigi if (set != co.use_set - 1) 1871170923Smaxim continue; 1872170923Smaxim } 1873206843Sluigi width = pr_u64(&d->pcnt, 0); 1874112189Smaxim if (width > pcwidth) 1875112189Smaxim pcwidth = width; 1876112189Smaxim 1877206843Sluigi width = pr_u64(&d->bcnt, 0); 1878112189Smaxim if (width > bcwidth) 1879112189Smaxim bcwidth = width; 1880112189Smaxim } 1881112189Smaxim } 188298943Sluigi /* if no rule numbers were specified, list all rules */ 188398943Sluigi if (ac == 0) { 1884170923Smaxim for (n = 0, r = data; n < nstat; n++, r = NEXT(r)) { 1885187764Sluigi if (co.use_set && r->set != co.use_set - 1) 1886170923Smaxim continue; 1887112189Smaxim show_ipfw(r, pcwidth, bcwidth); 1888170923Smaxim } 188998943Sluigi 1890187764Sluigi if (co.do_dynamic && ndyn) { 189198943Sluigi printf("## Dynamic rules (%d):\n", ndyn); 1892170923Smaxim for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1893187764Sluigi if (co.use_set) { 1894171989Smaxim bcopy((char *)&d->rule + sizeof(uint16_t), 1895170923Smaxim &set, sizeof(uint8_t)); 1896187764Sluigi if (set != co.use_set - 1) 1897170923Smaxim continue; 1898170923Smaxim } 1899112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 190098943Sluigi } 1901170923Smaxim } 190298943Sluigi goto done; 190398943Sluigi } 190498943Sluigi 190598943Sluigi /* display specific rules requested on command line */ 190698943Sluigi 190798943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 190898943Sluigi /* convert command line rule # */ 1909117469Sluigi last = rnum = strtoul(*lav++, &endptr, 10); 1910117469Sluigi if (*endptr == '-') 1911117469Sluigi last = strtoul(endptr+1, &endptr, 10); 191298943Sluigi if (*endptr) { 191398943Sluigi exitval = EX_USAGE; 191498943Sluigi warnx("invalid rule number: %s", *(lav - 1)); 191598943Sluigi continue; 191698943Sluigi } 1917117469Sluigi for (n = seen = 0, r = data; n < nstat; n++, r = NEXT(r) ) { 1918117469Sluigi if (r->rulenum > last) 191998943Sluigi break; 1920187764Sluigi if (co.use_set && r->set != co.use_set - 1) 1921170923Smaxim continue; 1922117469Sluigi if (r->rulenum >= rnum && r->rulenum <= last) { 1923112189Smaxim show_ipfw(r, pcwidth, bcwidth); 192498943Sluigi seen = 1; 192598943Sluigi } 192698943Sluigi } 192798943Sluigi if (!seen) { 192898943Sluigi /* give precedence to other error(s) */ 192998943Sluigi if (exitval == EX_OK) 193098943Sluigi exitval = EX_UNAVAILABLE; 193198943Sluigi warnx("rule %lu does not exist", rnum); 193298943Sluigi } 193398943Sluigi } 193498943Sluigi 1935187764Sluigi if (co.do_dynamic && ndyn) { 193698943Sluigi printf("## Dynamic rules:\n"); 193798943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 1938145246Sbrooks last = rnum = strtoul(*lav++, &endptr, 10); 1939117469Sluigi if (*endptr == '-') 1940117469Sluigi last = strtoul(endptr+1, &endptr, 10); 194198943Sluigi if (*endptr) 194298943Sluigi /* already warned */ 194398943Sluigi continue; 194498943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1945115793Sticso uint16_t rulenum; 1946115793Sticso 1947115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 1948115793Sticso if (rulenum > rnum) 194998943Sluigi break; 1950187764Sluigi if (co.use_set) { 1951171989Smaxim bcopy((char *)&d->rule + sizeof(uint16_t), 1952170923Smaxim &set, sizeof(uint8_t)); 1953187764Sluigi if (set != co.use_set - 1) 1954170923Smaxim continue; 1955170923Smaxim } 1956117469Sluigi if (r->rulenum >= rnum && r->rulenum <= last) 1957112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 195898943Sluigi } 195998943Sluigi } 196098943Sluigi } 196198943Sluigi 196298943Sluigi ac = 0; 196398943Sluigi 196498943Sluigidone: 196598943Sluigi free(data); 196698943Sluigi 196798943Sluigi if (exitval != EX_OK) 196898943Sluigi exit(exitval); 1969117469Sluigi#undef NEXT 197098943Sluigi} 197198943Sluigi 197298943Sluigistatic int 197398943Sluigilookup_host (char *host, struct in_addr *ipaddr) 197498943Sluigi{ 197598943Sluigi struct hostent *he; 197698943Sluigi 197798943Sluigi if (!inet_aton(host, ipaddr)) { 197898943Sluigi if ((he = gethostbyname(host)) == NULL) 197998943Sluigi return(-1); 198098943Sluigi *ipaddr = *(struct in_addr *)he->h_addr_list[0]; 198198943Sluigi } 198298943Sluigi return(0); 198398943Sluigi} 198498943Sluigi 198598943Sluigi/* 198698943Sluigi * fills the addr and mask fields in the instruction as appropriate from av. 198798943Sluigi * Update length as appropriate. 198898943Sluigi * The following formats are allowed: 198998943Sluigi * me returns O_IP_*_ME 199098943Sluigi * 1.2.3.4 single IP address 199198943Sluigi * 1.2.3.4:5.6.7.8 address:mask 199298943Sluigi * 1.2.3.4/24 address/mask 199398943Sluigi * 1.2.3.4/26{1,6,5,4,23} set of addresses in a subnet 1994117328Sluigi * We can have multiple comma-separated address/mask entries. 199598943Sluigi */ 199698943Sluigistatic void 199798943Sluigifill_ip(ipfw_insn_ip *cmd, char *av) 199898943Sluigi{ 1999117328Sluigi int len = 0; 2000117328Sluigi uint32_t *d = ((ipfw_insn_u32 *)cmd)->d; 200198943Sluigi 200298943Sluigi cmd->o.len &= ~F_LEN_MASK; /* zero len */ 200398943Sluigi 2004140271Sbrooks if (_substrcmp(av, "any") == 0) 200598943Sluigi return; 200698943Sluigi 2007140271Sbrooks if (_substrcmp(av, "me") == 0) { 200898943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn); 200998943Sluigi return; 201098943Sluigi } 201198943Sluigi 2012140271Sbrooks if (strncmp(av, "table(", 6) == 0) { 2013130281Sru char *p = strchr(av + 6, ','); 2014130281Sru 2015130281Sru if (p) 2016130281Sru *p++ = '\0'; 2017130281Sru cmd->o.opcode = O_IP_DST_LOOKUP; 2018130281Sru cmd->o.arg1 = strtoul(av + 6, NULL, 0); 2019130281Sru if (p) { 2020130281Sru cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 2021130281Sru d[0] = strtoul(p, NULL, 0); 2022130281Sru } else 2023130281Sru cmd->o.len |= F_INSN_SIZE(ipfw_insn); 2024130281Sru return; 2025130281Sru } 2026130281Sru 2027117328Sluigi while (av) { 2028117328Sluigi /* 2029117328Sluigi * After the address we can have '/' or ':' indicating a mask, 2030117328Sluigi * ',' indicating another address follows, '{' indicating a 2031117328Sluigi * set of addresses of unspecified size. 2032117328Sluigi */ 2033165851Smlaier char *t = NULL, *p = strpbrk(av, "/:,{"); 2034117328Sluigi int masklen; 2035187477Sluigi char md, nd = '\0'; 2036117328Sluigi 203798943Sluigi if (p) { 203898943Sluigi md = *p; 203998943Sluigi *p++ = '\0'; 2040165851Smlaier if ((t = strpbrk(p, ",{")) != NULL) { 2041165851Smlaier nd = *t; 2042165851Smlaier *t = '\0'; 2043165851Smlaier } 2044117328Sluigi } else 2045117328Sluigi md = '\0'; 204698943Sluigi 2047117328Sluigi if (lookup_host(av, (struct in_addr *)&d[0]) != 0) 204898943Sluigi errx(EX_NOHOST, "hostname ``%s'' unknown", av); 204998943Sluigi switch (md) { 205098943Sluigi case ':': 2051117328Sluigi if (!inet_aton(p, (struct in_addr *)&d[1])) 205298943Sluigi errx(EX_DATAERR, "bad netmask ``%s''", p); 205398943Sluigi break; 205498943Sluigi case '/': 2055117328Sluigi masklen = atoi(p); 2056117328Sluigi if (masklen == 0) 2057117328Sluigi d[1] = htonl(0); /* mask */ 2058117328Sluigi else if (masklen > 32) 205998943Sluigi errx(EX_DATAERR, "bad width ``%s''", p); 206098943Sluigi else 2061117328Sluigi d[1] = htonl(~0 << (32 - masklen)); 206298943Sluigi break; 2063117328Sluigi case '{': /* no mask, assume /24 and put back the '{' */ 2064117328Sluigi d[1] = htonl(~0 << (32 - 24)); 2065117328Sluigi *(--p) = md; 2066117328Sluigi break; 2067117328Sluigi 2068117328Sluigi case ',': /* single address plus continuation */ 2069117328Sluigi *(--p) = md; 2070117328Sluigi /* FALLTHROUGH */ 2071117328Sluigi case 0: /* initialization value */ 207298943Sluigi default: 2073117328Sluigi d[1] = htonl(~0); /* force /32 */ 207498943Sluigi break; 207598943Sluigi } 2076117328Sluigi d[0] &= d[1]; /* mask base address with mask */ 2077165851Smlaier if (t) 2078165851Smlaier *t = nd; 2079117328Sluigi /* find next separator */ 208098943Sluigi if (p) 2081117328Sluigi p = strpbrk(p, ",{"); 2082117328Sluigi if (p && *p == '{') { 2083117328Sluigi /* 2084117328Sluigi * We have a set of addresses. They are stored as follows: 2085117328Sluigi * arg1 is the set size (powers of 2, 2..256) 2086117328Sluigi * addr is the base address IN HOST FORMAT 2087117328Sluigi * mask.. is an array of arg1 bits (rounded up to 2088117328Sluigi * the next multiple of 32) with bits set 2089117328Sluigi * for each host in the map. 2090117328Sluigi */ 2091117328Sluigi uint32_t *map = (uint32_t *)&cmd->mask; 209298943Sluigi int low, high; 2093117577Sluigi int i = contigmask((uint8_t *)&(d[1]), 32); 209498943Sluigi 2095117328Sluigi if (len > 0) 2096117328Sluigi errx(EX_DATAERR, "address set cannot be in a list"); 2097117328Sluigi if (i < 24 || i > 31) 2098117328Sluigi errx(EX_DATAERR, "invalid set with mask %d\n", i); 2099117328Sluigi cmd->o.arg1 = 1<<(32-i); /* map length */ 2100117328Sluigi d[0] = ntohl(d[0]); /* base addr in host format */ 210198943Sluigi cmd->o.opcode = O_IP_DST_SET; /* default */ 210298943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32) + (cmd->o.arg1+31)/32; 2103101117Sluigi for (i = 0; i < (cmd->o.arg1+31)/32 ; i++) 2104117328Sluigi map[i] = 0; /* clear map */ 210598943Sluigi 2106117328Sluigi av = p + 1; 2107117328Sluigi low = d[0] & 0xff; 210898943Sluigi high = low + cmd->o.arg1 - 1; 2109117328Sluigi /* 2110117328Sluigi * Here, i stores the previous value when we specify a range 2111117328Sluigi * of addresses within a mask, e.g. 45-63. i = -1 means we 2112117328Sluigi * have no previous value. 2113117328Sluigi */ 2114116716Sluigi i = -1; /* previous value in a range */ 211598943Sluigi while (isdigit(*av)) { 211698943Sluigi char *s; 2117117328Sluigi int a = strtol(av, &s, 0); 211898943Sluigi 2119117328Sluigi if (s == av) { /* no parameter */ 2120117328Sluigi if (*av != '}') 2121117328Sluigi errx(EX_DATAERR, "set not closed\n"); 2122117328Sluigi if (i != -1) 2123117328Sluigi errx(EX_DATAERR, "incomplete range %d-", i); 2124117328Sluigi break; 2125117328Sluigi } 2126117328Sluigi if (a < low || a > high) 2127117328Sluigi errx(EX_DATAERR, "addr %d out of range [%d-%d]\n", 212898943Sluigi a, low, high); 212998943Sluigi a -= low; 2130116716Sluigi if (i == -1) /* no previous in range */ 2131116716Sluigi i = a; 2132116716Sluigi else { /* check that range is valid */ 2133116716Sluigi if (i > a) 2134116716Sluigi errx(EX_DATAERR, "invalid range %d-%d", 2135116716Sluigi i+low, a+low); 2136116716Sluigi if (*s == '-') 2137116716Sluigi errx(EX_DATAERR, "double '-' in range"); 2138116716Sluigi } 2139116716Sluigi for (; i <= a; i++) 2140117328Sluigi map[i/32] |= 1<<(i & 31); 2141116716Sluigi i = -1; 2142116716Sluigi if (*s == '-') 2143116716Sluigi i = a; 2144117328Sluigi else if (*s == '}') 2145116716Sluigi break; 214698943Sluigi av = s+1; 214798943Sluigi } 214898943Sluigi return; 214998943Sluigi } 2150117328Sluigi av = p; 2151117328Sluigi if (av) /* then *av must be a ',' */ 2152117328Sluigi av++; 215398943Sluigi 2154117328Sluigi /* Check this entry */ 2155117328Sluigi if (d[1] == 0) { /* "any", specified as x.x.x.x/0 */ 2156117328Sluigi /* 2157117328Sluigi * 'any' turns the entire list into a NOP. 2158117328Sluigi * 'not any' never matches, so it is removed from the 2159117328Sluigi * list unless it is the only item, in which case we 2160117328Sluigi * report an error. 2161117328Sluigi */ 2162117328Sluigi if (cmd->o.len & F_NOT) { /* "not any" never matches */ 2163117328Sluigi if (av == NULL && len == 0) /* only this entry */ 2164117328Sluigi errx(EX_DATAERR, "not any never matches"); 2165117328Sluigi } 2166117328Sluigi /* else do nothing and skip this entry */ 2167128067Smaxim return; 2168117328Sluigi } 2169117328Sluigi /* A single IP can be stored in an optimized format */ 2170204591Sluigi if (d[1] == (uint32_t)~0 && av == NULL && len == 0) { 217198943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 2172117328Sluigi return; 2173117328Sluigi } 2174117328Sluigi len += 2; /* two words... */ 2175117328Sluigi d += 2; 2176117328Sluigi } /* end while */ 2177162363Sjhay if (len + 1 > F_LEN_MASK) 2178162363Sjhay errx(EX_DATAERR, "address list too long"); 2179117328Sluigi cmd->o.len |= len+1; 218098943Sluigi} 218198943Sluigi 218298943Sluigi 2183145246Sbrooks/* n2mask sets n bits of the mask */ 2184187769Sluigivoid 2185145246Sbrooksn2mask(struct in6_addr *mask, int n) 2186145246Sbrooks{ 2187145246Sbrooks static int minimask[9] = 2188145246Sbrooks { 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff }; 2189145246Sbrooks u_char *p; 2190145246Sbrooks 2191145246Sbrooks memset(mask, 0, sizeof(struct in6_addr)); 2192145246Sbrooks p = (u_char *) mask; 2193145246Sbrooks for (; n > 0; p++, n -= 8) { 2194145246Sbrooks if (n >= 8) 2195145246Sbrooks *p = 0xff; 2196145246Sbrooks else 2197145246Sbrooks *p = minimask[n]; 2198145246Sbrooks } 2199145246Sbrooks return; 2200145246Sbrooks} 2201145246Sbrooks 220298943Sluigi/* 220398943Sluigi * helper function to process a set of flags and set bits in the 220498943Sluigi * appropriate masks. 220598943Sluigi */ 220698943Sluigistatic void 220798943Sluigifill_flags(ipfw_insn *cmd, enum ipfw_opcodes opcode, 220898943Sluigi struct _s_x *flags, char *p) 220998943Sluigi{ 2210117328Sluigi uint8_t set=0, clear=0; 221198943Sluigi 221298943Sluigi while (p && *p) { 221398943Sluigi char *q; /* points to the separator */ 221498943Sluigi int val; 2215117328Sluigi uint8_t *which; /* mask we are working on */ 221698943Sluigi 221798943Sluigi if (*p == '!') { 221898943Sluigi p++; 221998943Sluigi which = &clear; 222098943Sluigi } else 222198943Sluigi which = &set; 222298943Sluigi q = strchr(p, ','); 222398943Sluigi if (q) 222498943Sluigi *q++ = '\0'; 222598943Sluigi val = match_token(flags, p); 222698943Sluigi if (val <= 0) 222798943Sluigi errx(EX_DATAERR, "invalid flag %s", p); 2228117328Sluigi *which |= (uint8_t)val; 222998943Sluigi p = q; 223098943Sluigi } 2231220802Sglebius cmd->opcode = opcode; 2232220802Sglebius cmd->len = (cmd->len & (F_NOT | F_OR)) | 1; 2233220802Sglebius cmd->arg1 = (set & 0xff) | ( (clear & 0xff) << 8); 223498943Sluigi} 223598943Sluigi 223698943Sluigi 2237187767Sluigivoid 2238204591Sluigiipfw_delete(char *av[]) 223998943Sluigi{ 2240117328Sluigi uint32_t rulenum; 224198943Sluigi int i; 224298943Sluigi int exitval = EX_OK; 2243101628Sluigi int do_set = 0; 224498943Sluigi 2245204591Sluigi av++; 2246130013Scsjp NEED1("missing rule specification"); 2247204591Sluigi if ( *av && _substrcmp(*av, "set") == 0) { 2248170923Smaxim /* Do not allow using the following syntax: 2249170923Smaxim * ipfw set N delete set M 2250170923Smaxim */ 2251187764Sluigi if (co.use_set) 2252170923Smaxim errx(EX_DATAERR, "invalid syntax"); 2253101978Sluigi do_set = 1; /* delete set */ 2254204591Sluigi av++; 2255101978Sluigi } 225698943Sluigi 225798943Sluigi /* Rule number */ 2258204591Sluigi while (*av && isdigit(**av)) { 2259204591Sluigi i = atoi(*av); av++; 2260187764Sluigi if (co.do_nat) { 2261165648Spiso exitval = do_cmd(IP_FW_NAT_DEL, &i, sizeof i); 2262165648Spiso if (exitval) { 2263165648Spiso exitval = EX_UNAVAILABLE; 2264165648Spiso warn("rule %u not available", i); 2265165648Spiso } 2266187764Sluigi } else if (co.do_pipe) { 2267187769Sluigi exitval = ipfw_delete_pipe(co.do_pipe, i); 226898943Sluigi } else { 2269187764Sluigi if (co.use_set) 2270170923Smaxim rulenum = (i & 0xffff) | (5 << 24) | 2271187764Sluigi ((co.use_set - 1) << 16); 2272170923Smaxim else 2273101978Sluigi rulenum = (i & 0xffff) | (do_set << 24); 2274117328Sluigi i = do_cmd(IP_FW_DEL, &rulenum, sizeof rulenum); 227598943Sluigi if (i) { 227698943Sluigi exitval = EX_UNAVAILABLE; 227798943Sluigi warn("rule %u: setsockopt(IP_FW_DEL)", 227898943Sluigi rulenum); 227998943Sluigi } 228098943Sluigi } 228198943Sluigi } 228298943Sluigi if (exitval != EX_OK) 228398943Sluigi exit(exitval); 228498943Sluigi} 228598943Sluigi 228698943Sluigi 228798943Sluigi/* 228898943Sluigi * fill the interface structure. We do not check the name as we can 228998943Sluigi * create interfaces dynamically, so checking them at insert time 229098943Sluigi * makes relatively little sense. 2291220802Sglebius * Interface names containing '*', '?', or '[' are assumed to be shell 2292121816Sbrooks * patterns which match interfaces. 229398943Sluigi */ 229498943Sluigistatic void 229598943Sluigifill_iface(ipfw_insn_if *cmd, char *arg) 229698943Sluigi{ 229798943Sluigi cmd->name[0] = '\0'; 229898943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_if); 229998943Sluigi 230098943Sluigi /* Parse the interface or address */ 2301140271Sbrooks if (strcmp(arg, "any") == 0) 230298943Sluigi cmd->o.len = 0; /* effectively ignore this command */ 230398943Sluigi else if (!isdigit(*arg)) { 2304121816Sbrooks strlcpy(cmd->name, arg, sizeof(cmd->name)); 2305121816Sbrooks cmd->p.glob = strpbrk(arg, "*?[") != NULL ? 1 : 0; 230698943Sluigi } else if (!inet_aton(arg, &cmd->p.ip)) 230798943Sluigi errx(EX_DATAERR, "bad ip address ``%s''", arg); 230898943Sluigi} 230998943Sluigi 231098943Sluigistatic void 2311169424Smaximget_mac_addr_mask(const char *p, uint8_t *addr, uint8_t *mask) 231298943Sluigi{ 2313204591Sluigi int i; 2314204591Sluigi size_t l; 2315169424Smaxim char *ap, *ptr, *optr; 2316169424Smaxim struct ether_addr *mac; 2317169424Smaxim const char *macset = "0123456789abcdefABCDEF:"; 231898943Sluigi 2319169424Smaxim if (strcmp(p, "any") == 0) { 2320169424Smaxim for (i = 0; i < ETHER_ADDR_LEN; i++) 2321169424Smaxim addr[i] = mask[i] = 0; 232298943Sluigi return; 2323169424Smaxim } 232498943Sluigi 2325169424Smaxim optr = ptr = strdup(p); 2326169424Smaxim if ((ap = strsep(&ptr, "&/")) != NULL && *ap != 0) { 2327169424Smaxim l = strlen(ap); 2328169424Smaxim if (strspn(ap, macset) != l || (mac = ether_aton(ap)) == NULL) 2329169424Smaxim errx(EX_DATAERR, "Incorrect MAC address"); 2330169424Smaxim bcopy(mac, addr, ETHER_ADDR_LEN); 2331169424Smaxim } else 2332169424Smaxim errx(EX_DATAERR, "Incorrect MAC address"); 2333169424Smaxim 2334169424Smaxim if (ptr != NULL) { /* we have mask? */ 2335169424Smaxim if (p[ptr - optr - 1] == '/') { /* mask len */ 2336204591Sluigi long ml = strtol(ptr, &ap, 10); 2337204591Sluigi if (*ap != 0 || ml > ETHER_ADDR_LEN * 8 || ml < 0) 2338169424Smaxim errx(EX_DATAERR, "Incorrect mask length"); 2339204591Sluigi for (i = 0; ml > 0 && i < ETHER_ADDR_LEN; ml -= 8, i++) 2340204591Sluigi mask[i] = (ml >= 8) ? 0xff: (~0) << (8 - ml); 2341169424Smaxim } else { /* mask */ 2342169424Smaxim l = strlen(ptr); 2343169424Smaxim if (strspn(ptr, macset) != l || 2344169424Smaxim (mac = ether_aton(ptr)) == NULL) 2345169424Smaxim errx(EX_DATAERR, "Incorrect mask"); 2346169424Smaxim bcopy(mac, mask, ETHER_ADDR_LEN); 234798943Sluigi } 2348169424Smaxim } else { /* default mask: ff:ff:ff:ff:ff:ff */ 2349169424Smaxim for (i = 0; i < ETHER_ADDR_LEN; i++) 235098943Sluigi mask[i] = 0xff; 235198943Sluigi } 2352169424Smaxim for (i = 0; i < ETHER_ADDR_LEN; i++) 235398943Sluigi addr[i] &= mask[i]; 2354169424Smaxim 2355169424Smaxim free(optr); 235698943Sluigi} 235798943Sluigi 235898943Sluigi/* 235998943Sluigi * helper function, updates the pointer to cmd with the length 236098943Sluigi * of the current command, and also cleans up the first word of 236198943Sluigi * the new command in case it has been clobbered before. 236298943Sluigi */ 236398943Sluigistatic ipfw_insn * 236498943Sluiginext_cmd(ipfw_insn *cmd) 236598943Sluigi{ 236698943Sluigi cmd += F_LEN(cmd); 236798943Sluigi bzero(cmd, sizeof(*cmd)); 236898943Sluigi return cmd; 236998943Sluigi} 237098943Sluigi 237198943Sluigi/* 2372117469Sluigi * Takes arguments and copies them into a comment 2373117469Sluigi */ 2374117469Sluigistatic void 2375204591Sluigifill_comment(ipfw_insn *cmd, char **av) 2376117469Sluigi{ 2377117469Sluigi int i, l; 2378117469Sluigi char *p = (char *)(cmd + 1); 2379117577Sluigi 2380117469Sluigi cmd->opcode = O_NOP; 2381117469Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)); 2382117469Sluigi 2383117469Sluigi /* Compute length of comment string. */ 2384204591Sluigi for (i = 0, l = 0; av[i] != NULL; i++) 2385117469Sluigi l += strlen(av[i]) + 1; 2386117469Sluigi if (l == 0) 2387117469Sluigi return; 2388117469Sluigi if (l > 84) 2389117469Sluigi errx(EX_DATAERR, 2390117469Sluigi "comment too long (max 80 chars)"); 2391117469Sluigi l = 1 + (l+3)/4; 2392117469Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | l; 2393204591Sluigi for (i = 0; av[i] != NULL; i++) { 2394117469Sluigi strcpy(p, av[i]); 2395117469Sluigi p += strlen(av[i]); 2396117469Sluigi *p++ = ' '; 2397117469Sluigi } 2398117469Sluigi *(--p) = '\0'; 2399117469Sluigi} 2400117577Sluigi 2401117469Sluigi/* 240298943Sluigi * A function to fill simple commands of size 1. 240398943Sluigi * Existing flags are preserved. 240498943Sluigi */ 240598943Sluigistatic void 2406117328Sluigifill_cmd(ipfw_insn *cmd, enum ipfw_opcodes opcode, int flags, uint16_t arg) 240798943Sluigi{ 240898943Sluigi cmd->opcode = opcode; 240998943Sluigi cmd->len = ((cmd->len | flags) & (F_NOT | F_OR)) | 1; 241098943Sluigi cmd->arg1 = arg; 241198943Sluigi} 241298943Sluigi 241398943Sluigi/* 241498943Sluigi * Fetch and add the MAC address and type, with masks. This generates one or 241598943Sluigi * two microinstructions, and returns the pointer to the last one. 241698943Sluigi */ 241798943Sluigistatic ipfw_insn * 2418204591Sluigiadd_mac(ipfw_insn *cmd, char *av[]) 241998943Sluigi{ 2420102087Sluigi ipfw_insn_mac *mac; 242198943Sluigi 2422204591Sluigi if ( ( av[0] == NULL ) || ( av[1] == NULL ) ) 2423102098Sluigi errx(EX_DATAERR, "MAC dst src"); 242498943Sluigi 242598943Sluigi cmd->opcode = O_MACADDR2; 242698943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | F_INSN_SIZE(ipfw_insn_mac); 242798943Sluigi 242898943Sluigi mac = (ipfw_insn_mac *)cmd; 2429101978Sluigi get_mac_addr_mask(av[0], mac->addr, mac->mask); /* dst */ 2430169424Smaxim get_mac_addr_mask(av[1], &(mac->addr[ETHER_ADDR_LEN]), 2431169424Smaxim &(mac->mask[ETHER_ADDR_LEN])); /* src */ 2432102087Sluigi return cmd; 2433102087Sluigi} 243498943Sluigi 2435102087Sluigistatic ipfw_insn * 2436204591Sluigiadd_mactype(ipfw_insn *cmd, char *av) 2437102087Sluigi{ 2438204591Sluigi if (!av) 2439102087Sluigi errx(EX_DATAERR, "missing MAC type"); 2440102087Sluigi if (strcmp(av, "any") != 0) { /* we have a non-null type */ 2441102087Sluigi fill_newports((ipfw_insn_u16 *)cmd, av, IPPROTO_ETHERTYPE); 244298943Sluigi cmd->opcode = O_MAC_TYPE; 2443102087Sluigi return cmd; 2444102087Sluigi } else 2445102087Sluigi return NULL; 2446102087Sluigi} 244798943Sluigi 2448102087Sluigistatic ipfw_insn * 2449152923Sumeadd_proto0(ipfw_insn *cmd, char *av, u_char *protop) 2450102087Sluigi{ 2451102087Sluigi struct protoent *pe; 2452152923Sume char *ep; 2453152923Sume int proto; 2454102087Sluigi 2455156315Sume proto = strtol(av, &ep, 10); 2456156315Sume if (*ep != '\0' || proto <= 0) { 2457152923Sume if ((pe = getprotobyname(av)) == NULL) 2458152923Sume return NULL; 2459152923Sume proto = pe->p_proto; 2460152923Sume } 2461145246Sbrooks 2462152923Sume fill_cmd(cmd, O_PROTO, 0, proto); 2463152923Sume *protop = proto; 2464152923Sume return cmd; 2465152923Sume} 2466152923Sume 2467152923Sumestatic ipfw_insn * 2468152923Sumeadd_proto(ipfw_insn *cmd, char *av, u_char *protop) 2469152923Sume{ 2470152923Sume u_char proto = IPPROTO_IP; 2471152923Sume 2472156315Sume if (_substrcmp(av, "all") == 0 || strcmp(av, "ip") == 0) 2473146894Smlaier ; /* do not set O_IP4 nor O_IP6 */ 2474152923Sume else if (strcmp(av, "ip4") == 0) 2475152923Sume /* explicit "just IPv4" rule */ 2476152923Sume fill_cmd(cmd, O_IP4, 0, 0); 2477152923Sume else if (strcmp(av, "ip6") == 0) { 2478152923Sume /* explicit "just IPv6" rule */ 2479152923Sume proto = IPPROTO_IPV6; 2480152923Sume fill_cmd(cmd, O_IP6, 0, 0); 2481152923Sume } else 2482152923Sume return add_proto0(cmd, av, protop); 2483152923Sume 2484152923Sume *protop = proto; 2485152923Sume return cmd; 2486152923Sume} 2487152923Sume 2488152923Sumestatic ipfw_insn * 2489152923Sumeadd_proto_compat(ipfw_insn *cmd, char *av, u_char *protop) 2490152923Sume{ 2491152923Sume u_char proto = IPPROTO_IP; 2492152923Sume 2493152923Sume if (_substrcmp(av, "all") == 0 || strcmp(av, "ip") == 0) 2494152923Sume ; /* do not set O_IP4 nor O_IP6 */ 2495146894Smlaier else if (strcmp(av, "ipv4") == 0 || strcmp(av, "ip4") == 0) 2496146894Smlaier /* explicit "just IPv4" rule */ 2497146894Smlaier fill_cmd(cmd, O_IP4, 0, 0); 2498146894Smlaier else if (strcmp(av, "ipv6") == 0 || strcmp(av, "ip6") == 0) { 2499146894Smlaier /* explicit "just IPv6" rule */ 2500152923Sume proto = IPPROTO_IPV6; 2501146894Smlaier fill_cmd(cmd, O_IP6, 0, 0); 2502152923Sume } else 2503152923Sume return add_proto0(cmd, av, protop); 2504145246Sbrooks 2505152923Sume *protop = proto; 250698943Sluigi return cmd; 250798943Sluigi} 250898943Sluigi 2509102087Sluigistatic ipfw_insn * 2510102087Sluigiadd_srcip(ipfw_insn *cmd, char *av) 2511102087Sluigi{ 2512102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2513102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2514102087Sluigi cmd->opcode = O_IP_SRC_SET; 2515130281Sru else if (cmd->opcode == O_IP_DST_LOOKUP) /* table */ 2516130281Sru cmd->opcode = O_IP_SRC_LOOKUP; 2517102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2518102087Sluigi cmd->opcode = O_IP_SRC_ME; 2519102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2520102087Sluigi cmd->opcode = O_IP_SRC; 2521117328Sluigi else /* addr/mask */ 2522102087Sluigi cmd->opcode = O_IP_SRC_MASK; 2523102087Sluigi return cmd; 2524102087Sluigi} 2525102087Sluigi 2526102087Sluigistatic ipfw_insn * 2527102087Sluigiadd_dstip(ipfw_insn *cmd, char *av) 2528102087Sluigi{ 2529102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2530102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2531102087Sluigi ; 2532130281Sru else if (cmd->opcode == O_IP_DST_LOOKUP) /* table */ 2533130281Sru ; 2534102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2535102087Sluigi cmd->opcode = O_IP_DST_ME; 2536102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2537102087Sluigi cmd->opcode = O_IP_DST; 2538117328Sluigi else /* addr/mask */ 2539102087Sluigi cmd->opcode = O_IP_DST_MASK; 2540102087Sluigi return cmd; 2541102087Sluigi} 2542102087Sluigi 2543102087Sluigistatic ipfw_insn * 2544102087Sluigiadd_ports(ipfw_insn *cmd, char *av, u_char proto, int opcode) 2545102087Sluigi{ 2546204591Sluigi /* XXX "any" is trapped before. Perhaps "to" */ 2547140271Sbrooks if (_substrcmp(av, "any") == 0) { 2548102087Sluigi return NULL; 2549102087Sluigi } else if (fill_newports((ipfw_insn_u16 *)cmd, av, proto)) { 2550102087Sluigi /* XXX todo: check that we have a protocol with ports */ 2551102087Sluigi cmd->opcode = opcode; 2552102087Sluigi return cmd; 2553102087Sluigi } 2554102087Sluigi return NULL; 2555102087Sluigi} 2556102087Sluigi 2557145246Sbrooksstatic ipfw_insn * 2558145246Sbrooksadd_src(ipfw_insn *cmd, char *av, u_char proto) 2559145246Sbrooks{ 2560145246Sbrooks struct in6_addr a; 2561158553Smlaier char *host, *ch; 2562158553Smlaier ipfw_insn *ret = NULL; 2563145246Sbrooks 2564158553Smlaier if ((host = strdup(av)) == NULL) 2565158553Smlaier return NULL; 2566158553Smlaier if ((ch = strrchr(host, '/')) != NULL) 2567158553Smlaier *ch = '\0'; 2568158553Smlaier 2569145246Sbrooks if (proto == IPPROTO_IPV6 || strcmp(av, "me6") == 0 || 2570204591Sluigi inet_pton(AF_INET6, host, &a) == 1) 2571158553Smlaier ret = add_srcip6(cmd, av); 2572145246Sbrooks /* XXX: should check for IPv4, not !IPv6 */ 2573161483Sdwmalone if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 || 2574204591Sluigi inet_pton(AF_INET6, host, &a) != 1)) 2575158553Smlaier ret = add_srcip(cmd, av); 2576161483Sdwmalone if (ret == NULL && strcmp(av, "any") != 0) 2577158553Smlaier ret = cmd; 2578145246Sbrooks 2579158553Smlaier free(host); 2580158553Smlaier return ret; 2581145246Sbrooks} 2582145246Sbrooks 2583145246Sbrooksstatic ipfw_insn * 2584145246Sbrooksadd_dst(ipfw_insn *cmd, char *av, u_char proto) 2585145246Sbrooks{ 2586145246Sbrooks struct in6_addr a; 2587158553Smlaier char *host, *ch; 2588158553Smlaier ipfw_insn *ret = NULL; 2589145246Sbrooks 2590158553Smlaier if ((host = strdup(av)) == NULL) 2591158553Smlaier return NULL; 2592158553Smlaier if ((ch = strrchr(host, '/')) != NULL) 2593158553Smlaier *ch = '\0'; 2594158553Smlaier 2595145246Sbrooks if (proto == IPPROTO_IPV6 || strcmp(av, "me6") == 0 || 2596204591Sluigi inet_pton(AF_INET6, host, &a) == 1) 2597158553Smlaier ret = add_dstip6(cmd, av); 2598145246Sbrooks /* XXX: should check for IPv4, not !IPv6 */ 2599161483Sdwmalone if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 || 2600204591Sluigi inet_pton(AF_INET6, host, &a) != 1)) 2601158553Smlaier ret = add_dstip(cmd, av); 2602161483Sdwmalone if (ret == NULL && strcmp(av, "any") != 0) 2603158553Smlaier ret = cmd; 2604145246Sbrooks 2605158553Smlaier free(host); 2606158553Smlaier return ret; 2607145246Sbrooks} 2608145246Sbrooks 260998943Sluigi/* 261098943Sluigi * Parse arguments and assemble the microinstructions which make up a rule. 261198943Sluigi * Rules are added into the 'rulebuf' and then copied in the correct order 261298943Sluigi * into the actual rule. 261398943Sluigi * 2614136071Sgreen * The syntax for a rule starts with the action, followed by 2615136071Sgreen * optional action parameters, and the various match patterns. 2616108533Sschweikh * In the assembled microcode, the first opcode must be an O_PROBE_STATE 261798943Sluigi * (generated if the rule includes a keep-state option), then the 2618136071Sgreen * various match patterns, log/altq actions, and the actual action. 2619106505Smaxim * 262098943Sluigi */ 2621187767Sluigivoid 2622204591Sluigiipfw_add(char *av[]) 262398943Sluigi{ 262498943Sluigi /* 262598943Sluigi * rules are added into the 'rulebuf' and then copied in 262698943Sluigi * the correct order into the actual rule. 262798943Sluigi * Some things that need to go out of order (prob, action etc.) 262898943Sluigi * go into actbuf[]. 262998943Sluigi */ 2630117328Sluigi static uint32_t rulebuf[255], actbuf[255], cmdbuf[255]; 263198943Sluigi 2632117469Sluigi ipfw_insn *src, *dst, *cmd, *action, *prev=NULL; 2633102087Sluigi ipfw_insn *first_cmd; /* first match pattern */ 263498943Sluigi 263598943Sluigi struct ip_fw *rule; 263698943Sluigi 263798943Sluigi /* 263898943Sluigi * various flags used to record that we entered some fields. 263998943Sluigi */ 2640101116Sluigi ipfw_insn *have_state = NULL; /* check-state or keep-state */ 2641158879Soleg ipfw_insn *have_log = NULL, *have_altq = NULL, *have_tag = NULL; 2642134475Smaxim size_t len; 264398943Sluigi 264498943Sluigi int i; 264598943Sluigi 264698943Sluigi int open_par = 0; /* open parenthesis ( */ 264798943Sluigi 264898943Sluigi /* proto is here because it is used to fetch ports */ 264998943Sluigi u_char proto = IPPROTO_IP; /* default protocol */ 265098943Sluigi 2651107289Sluigi double match_prob = 1; /* match probability, default is always match */ 2652107289Sluigi 265398943Sluigi bzero(actbuf, sizeof(actbuf)); /* actions go here */ 265498943Sluigi bzero(cmdbuf, sizeof(cmdbuf)); 265598943Sluigi bzero(rulebuf, sizeof(rulebuf)); 265698943Sluigi 265798943Sluigi rule = (struct ip_fw *)rulebuf; 265898943Sluigi cmd = (ipfw_insn *)cmdbuf; 265998943Sluigi action = (ipfw_insn *)actbuf; 266098943Sluigi 2661204591Sluigi av++; 266298943Sluigi 266398943Sluigi /* [rule N] -- Rule number optional */ 2664204591Sluigi if (av[0] && isdigit(**av)) { 266598943Sluigi rule->rulenum = atoi(*av); 266698943Sluigi av++; 266798943Sluigi } 266898943Sluigi 2669117655Sluigi /* [set N] -- set number (0..RESVD_SET), optional */ 2670205631Sluigi if (av[0] && av[1] && _substrcmp(*av, "set") == 0) { 2671101628Sluigi int set = strtoul(av[1], NULL, 10); 2672117655Sluigi if (set < 0 || set > RESVD_SET) 2673101628Sluigi errx(EX_DATAERR, "illegal set %s", av[1]); 2674101628Sluigi rule->set = set; 2675204591Sluigi av += 2; 2676101628Sluigi } 2677101628Sluigi 267898943Sluigi /* [prob D] -- match probability, optional */ 2679204591Sluigi if (av[0] && av[1] && _substrcmp(*av, "prob") == 0) { 2680107289Sluigi match_prob = strtod(av[1], NULL); 268198943Sluigi 2682107289Sluigi if (match_prob <= 0 || match_prob > 1) 268398943Sluigi errx(EX_DATAERR, "illegal match prob. %s", av[1]); 2684204591Sluigi av += 2; 268598943Sluigi } 268698943Sluigi 268798943Sluigi /* action -- mandatory */ 268898943Sluigi NEED1("missing action"); 268998943Sluigi i = match_token(rule_actions, *av); 2690204591Sluigi av++; 269198943Sluigi action->len = 1; /* default */ 269298943Sluigi switch(i) { 269398943Sluigi case TOK_CHECKSTATE: 2694101116Sluigi have_state = action; 269598943Sluigi action->opcode = O_CHECK_STATE; 269698943Sluigi break; 269798943Sluigi 269898943Sluigi case TOK_ACCEPT: 269998943Sluigi action->opcode = O_ACCEPT; 270098943Sluigi break; 270198943Sluigi 270298943Sluigi case TOK_DENY: 270398943Sluigi action->opcode = O_DENY; 270499475Sluigi action->arg1 = 0; 270598943Sluigi break; 270698943Sluigi 270799475Sluigi case TOK_REJECT: 270899475Sluigi action->opcode = O_REJECT; 270999475Sluigi action->arg1 = ICMP_UNREACH_HOST; 271099475Sluigi break; 271199475Sluigi 271299475Sluigi case TOK_RESET: 271399475Sluigi action->opcode = O_REJECT; 271499475Sluigi action->arg1 = ICMP_REJECT_RST; 271599475Sluigi break; 271699475Sluigi 2717149020Sbz case TOK_RESET6: 2718149020Sbz action->opcode = O_UNREACH6; 2719149020Sbz action->arg1 = ICMP6_UNREACH_RST; 2720149020Sbz break; 2721149020Sbz 272299475Sluigi case TOK_UNREACH: 272399475Sluigi action->opcode = O_REJECT; 272499475Sluigi NEED1("missing reject code"); 272599475Sluigi fill_reject_code(&action->arg1, *av); 2726204591Sluigi av++; 272799475Sluigi break; 272899475Sluigi 2729149020Sbz case TOK_UNREACH6: 2730149020Sbz action->opcode = O_UNREACH6; 2731149020Sbz NEED1("missing unreach code"); 2732149020Sbz fill_unreach6_code(&action->arg1, *av); 2733204591Sluigi av++; 2734149020Sbz break; 2735149020Sbz 273698943Sluigi case TOK_COUNT: 273798943Sluigi action->opcode = O_COUNT; 273898943Sluigi break; 273998943Sluigi 2740176517Spiso case TOK_NAT: 2741176517Spiso action->opcode = O_NAT; 2742176517Spiso action->len = F_INSN_SIZE(ipfw_insn_nat); 2743176517Spiso goto chkarg; 2744178888Sjulian 274598943Sluigi case TOK_QUEUE: 2746153374Sglebius action->opcode = O_QUEUE; 2747153374Sglebius goto chkarg; 274898943Sluigi case TOK_PIPE: 2749153374Sglebius action->opcode = O_PIPE; 2750153374Sglebius goto chkarg; 275198943Sluigi case TOK_SKIPTO: 2752153374Sglebius action->opcode = O_SKIPTO; 2753153374Sglebius goto chkarg; 2754153374Sglebius case TOK_NETGRAPH: 2755153374Sglebius action->opcode = O_NETGRAPH; 2756153374Sglebius goto chkarg; 2757153374Sglebius case TOK_NGTEE: 2758153374Sglebius action->opcode = O_NGTEE; 2759153374Sglebius goto chkarg; 276098943Sluigi case TOK_DIVERT: 2761153374Sglebius action->opcode = O_DIVERT; 2762153374Sglebius goto chkarg; 276398943Sluigi case TOK_TEE: 2764153374Sglebius action->opcode = O_TEE; 2765153374Sglebiuschkarg: 2766204591Sluigi if (!av[0]) 2767153374Sglebius errx(EX_USAGE, "missing argument for %s", *(av - 1)); 2768153374Sglebius if (isdigit(**av)) { 2769153374Sglebius action->arg1 = strtoul(*av, NULL, 10); 2770153374Sglebius if (action->arg1 <= 0 || action->arg1 >= IP_FW_TABLEARG) 2771153374Sglebius errx(EX_DATAERR, "illegal argument for %s", 2772153374Sglebius *(av - 1)); 2773187762Sluigi } else if (_substrcmp(*av, "tablearg") == 0) { 2774153374Sglebius action->arg1 = IP_FW_TABLEARG; 2775153374Sglebius } else if (i == TOK_DIVERT || i == TOK_TEE) { 277698943Sluigi struct servent *s; 277798943Sluigi setservent(1); 277898943Sluigi s = getservbyname(av[0], "divert"); 277998943Sluigi if (s != NULL) 278098943Sluigi action->arg1 = ntohs(s->s_port); 278198943Sluigi else 278298943Sluigi errx(EX_DATAERR, "illegal divert/tee port"); 2783153374Sglebius } else 2784153374Sglebius errx(EX_DATAERR, "illegal argument for %s", *(av - 1)); 2785204591Sluigi av++; 278698943Sluigi break; 278798943Sluigi 278898943Sluigi case TOK_FORWARD: { 278998943Sluigi ipfw_insn_sa *p = (ipfw_insn_sa *)action; 279098943Sluigi char *s, *end; 279198943Sluigi 279298943Sluigi NEED1("missing forward address[:port]"); 279398943Sluigi 279498943Sluigi action->opcode = O_FORWARD_IP; 279598943Sluigi action->len = F_INSN_SIZE(ipfw_insn_sa); 279698943Sluigi 2797188005Sluigi /* 2798188005Sluigi * In the kernel we assume AF_INET and use only 2799200183Sluigi * sin_port and sin_addr. Remember to set sin_len as 2800200183Sluigi * the routing code seems to use it too. 2801188005Sluigi */ 280298943Sluigi p->sa.sin_family = AF_INET; 2803200183Sluigi p->sa.sin_len = sizeof(struct sockaddr_in); 280498943Sluigi p->sa.sin_port = 0; 280598943Sluigi /* 280698943Sluigi * locate the address-port separator (':' or ',') 280798943Sluigi */ 280898943Sluigi s = strchr(*av, ':'); 280998943Sluigi if (s == NULL) 281098943Sluigi s = strchr(*av, ','); 281198943Sluigi if (s != NULL) { 281298943Sluigi *(s++) = '\0'; 281398943Sluigi i = strtoport(s, &end, 0 /* base */, 0 /* proto */); 281498943Sluigi if (s == end) 281598943Sluigi errx(EX_DATAERR, 281698943Sluigi "illegal forwarding port ``%s''", s); 2817103241Sluigi p->sa.sin_port = (u_short)i; 281898943Sluigi } 2819220802Sglebius if (_substrcmp(*av, "tablearg") == 0) 2820161456Sjulian p->sa.sin_addr.s_addr = INADDR_ANY; 2821161456Sjulian else 2822161424Sjulian lookup_host(*av, &(p->sa.sin_addr)); 2823204591Sluigi av++; 282498943Sluigi break; 2825161424Sjulian } 2826117469Sluigi case TOK_COMMENT: 2827117469Sluigi /* pretend it is a 'count' rule followed by the comment */ 2828117469Sluigi action->opcode = O_COUNT; 2829204591Sluigi av--; /* go back... */ 2830117469Sluigi break; 2831178888Sjulian 2832178888Sjulian case TOK_SETFIB: 2833178888Sjulian { 2834178888Sjulian int numfibs; 2835178916Sjulian size_t intsize = sizeof(int); 2836178888Sjulian 2837178888Sjulian action->opcode = O_SETFIB; 2838178888Sjulian NEED1("missing fib number"); 2839220802Sglebius action->arg1 = strtoul(*av, NULL, 10); 2840178916Sjulian if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1) 2841178888Sjulian errx(EX_DATAERR, "fibs not suported.\n"); 2842178888Sjulian if (action->arg1 >= numfibs) /* Temporary */ 2843178888Sjulian errx(EX_DATAERR, "fib too large.\n"); 2844204591Sluigi av++; 2845178888Sjulian break; 2846178888Sjulian } 2847190633Spiso 2848190633Spiso case TOK_REASS: 2849190633Spiso action->opcode = O_REASS; 2850190633Spiso break; 2851165648Spiso 285298943Sluigi default: 2853102087Sluigi errx(EX_DATAERR, "invalid action %s\n", av[-1]); 285498943Sluigi } 285598943Sluigi action = next_cmd(action); 285698943Sluigi 285798943Sluigi /* 2858136071Sgreen * [altq queuename] -- altq tag, optional 285998943Sluigi * [log [logamount N]] -- log, optional 286098943Sluigi * 2861136071Sgreen * If they exist, it go first in the cmdbuf, but then it is 286298943Sluigi * skipped in the copy section to the end of the buffer. 286398943Sluigi */ 2864204591Sluigi while (av[0] != NULL && (i = match_token(rule_action_params, *av)) != -1) { 2865204591Sluigi av++; 2866136071Sgreen switch (i) { 2867136071Sgreen case TOK_LOG: 2868136071Sgreen { 2869136071Sgreen ipfw_insn_log *c = (ipfw_insn_log *)cmd; 2870136071Sgreen int l; 287198943Sluigi 2872136071Sgreen if (have_log) 2873136071Sgreen errx(EX_DATAERR, 2874136071Sgreen "log cannot be specified more than once"); 2875136071Sgreen have_log = (ipfw_insn *)c; 2876136071Sgreen cmd->len = F_INSN_SIZE(ipfw_insn_log); 2877136071Sgreen cmd->opcode = O_LOG; 2878204591Sluigi if (av[0] && _substrcmp(*av, "logamount") == 0) { 2879204591Sluigi av++; 2880136071Sgreen NEED1("logamount requires argument"); 2881136071Sgreen l = atoi(*av); 2882136071Sgreen if (l < 0) 2883136071Sgreen errx(EX_DATAERR, 2884136071Sgreen "logamount must be positive"); 2885136071Sgreen c->max_log = l; 2886204591Sluigi av++; 2887136071Sgreen } else { 2888136071Sgreen len = sizeof(c->max_log); 2889136071Sgreen if (sysctlbyname("net.inet.ip.fw.verbose_limit", 2890136071Sgreen &c->max_log, &len, NULL, 0) == -1) 2891136071Sgreen errx(1, "sysctlbyname(\"%s\")", 2892136071Sgreen "net.inet.ip.fw.verbose_limit"); 2893136071Sgreen } 2894136071Sgreen } 2895136071Sgreen break; 2896136071Sgreen 2897204591Sluigi#ifndef NO_ALTQ 2898136071Sgreen case TOK_ALTQ: 2899136071Sgreen { 2900136071Sgreen ipfw_insn_altq *a = (ipfw_insn_altq *)cmd; 2901136071Sgreen 2902136071Sgreen NEED1("missing altq queue name"); 2903136071Sgreen if (have_altq) 2904136071Sgreen errx(EX_DATAERR, 2905136071Sgreen "altq cannot be specified more than once"); 2906136071Sgreen have_altq = (ipfw_insn *)a; 2907136071Sgreen cmd->len = F_INSN_SIZE(ipfw_insn_altq); 2908136071Sgreen cmd->opcode = O_ALTQ; 2909187983Sluigi a->qid = altq_name_to_qid(*av); 2910204591Sluigi av++; 2911136071Sgreen } 2912136071Sgreen break; 2913204591Sluigi#endif 2914136071Sgreen 2915158879Soleg case TOK_TAG: 2916159636Soleg case TOK_UNTAG: { 2917159636Soleg uint16_t tag; 2918159636Soleg 2919158879Soleg if (have_tag) 2920159636Soleg errx(EX_USAGE, "tag and untag cannot be " 2921159636Soleg "specified more than once"); 2922193516Sluigi GET_UINT_ARG(tag, IPFW_ARG_MIN, IPFW_ARG_MAX, i, 2923182823Srik rule_action_params); 2924158879Soleg have_tag = cmd; 2925159636Soleg fill_cmd(cmd, O_TAG, (i == TOK_TAG) ? 0: F_NOT, tag); 2926204591Sluigi av++; 2927158879Soleg break; 2928159636Soleg } 2929158879Soleg 2930136071Sgreen default: 2931136071Sgreen abort(); 293298943Sluigi } 293398943Sluigi cmd = next_cmd(cmd); 293498943Sluigi } 293598943Sluigi 2936101116Sluigi if (have_state) /* must be a check-state, we are done */ 293798943Sluigi goto done; 293898943Sluigi 293998943Sluigi#define OR_START(target) \ 2940204591Sluigi if (av[0] && (*av[0] == '(' || *av[0] == '{')) { \ 294198943Sluigi if (open_par) \ 294298943Sluigi errx(EX_USAGE, "nested \"(\" not allowed\n"); \ 2943101641Sluigi prev = NULL; \ 294498943Sluigi open_par = 1; \ 294598943Sluigi if ( (av[0])[1] == '\0') { \ 2946204591Sluigi av++; \ 294798943Sluigi } else \ 294898943Sluigi (*av)++; \ 294998943Sluigi } \ 295098943Sluigi target: \ 295198943Sluigi 295298943Sluigi 295398943Sluigi#define CLOSE_PAR \ 295498943Sluigi if (open_par) { \ 2955204591Sluigi if (av[0] && ( \ 2956140271Sbrooks strcmp(*av, ")") == 0 || \ 2957140271Sbrooks strcmp(*av, "}") == 0)) { \ 2958101641Sluigi prev = NULL; \ 295998943Sluigi open_par = 0; \ 2960204591Sluigi av++; \ 296198943Sluigi } else \ 296298943Sluigi errx(EX_USAGE, "missing \")\"\n"); \ 296398943Sluigi } 2964106505Smaxim 296598943Sluigi#define NOT_BLOCK \ 2966204591Sluigi if (av[0] && _substrcmp(*av, "not") == 0) { \ 296798943Sluigi if (cmd->len & F_NOT) \ 296898943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); \ 296998943Sluigi cmd->len |= F_NOT; \ 2970204591Sluigi av++; \ 297198943Sluigi } 297298943Sluigi 297398943Sluigi#define OR_BLOCK(target) \ 2974204591Sluigi if (av[0] && _substrcmp(*av, "or") == 0) { \ 297598943Sluigi if (prev == NULL || open_par == 0) \ 297698943Sluigi errx(EX_DATAERR, "invalid OR block"); \ 297798943Sluigi prev->len |= F_OR; \ 2978204591Sluigi av++; \ 297998943Sluigi goto target; \ 298098943Sluigi } \ 298198943Sluigi CLOSE_PAR; 298298943Sluigi 2983102087Sluigi first_cmd = cmd; 2984102098Sluigi 2985102098Sluigi#if 0 298698943Sluigi /* 2987102087Sluigi * MAC addresses, optional. 2988102087Sluigi * If we have this, we skip the part "proto from src to dst" 2989102087Sluigi * and jump straight to the option parsing. 2990102087Sluigi */ 2991102087Sluigi NOT_BLOCK; 2992102087Sluigi NEED1("missing protocol"); 2993140271Sbrooks if (_substrcmp(*av, "MAC") == 0 || 2994140271Sbrooks _substrcmp(*av, "mac") == 0) { 2995204591Sluigi av++; /* the "MAC" keyword */ 2996204591Sluigi add_mac(cmd, av); /* exits in case of errors */ 2997102087Sluigi cmd = next_cmd(cmd); 2998204591Sluigi av += 2; /* dst-mac and src-mac */ 2999102087Sluigi NOT_BLOCK; 3000102087Sluigi NEED1("missing mac type"); 3001204591Sluigi if (add_mactype(cmd, av[0])) 3002102087Sluigi cmd = next_cmd(cmd); 3003204591Sluigi av++; /* any or mac-type */ 3004102087Sluigi goto read_options; 3005102087Sluigi } 3006102098Sluigi#endif 3007102087Sluigi 3008102087Sluigi /* 300998943Sluigi * protocol, mandatory 301098943Sluigi */ 301198943Sluigi OR_START(get_proto); 301298943Sluigi NOT_BLOCK; 301398943Sluigi NEED1("missing protocol"); 3014152923Sume if (add_proto_compat(cmd, *av, &proto)) { 3015204591Sluigi av++; 3016147105Smlaier if (F_LEN(cmd) != 0) { 3017102087Sluigi prev = cmd; 3018102087Sluigi cmd = next_cmd(cmd); 3019102087Sluigi } 3020102098Sluigi } else if (first_cmd != cmd) { 3021116438Smaxim errx(EX_DATAERR, "invalid protocol ``%s''", *av); 3022102098Sluigi } else 3023102098Sluigi goto read_options; 302498943Sluigi OR_BLOCK(get_proto); 302598943Sluigi 302698943Sluigi /* 3027102087Sluigi * "from", mandatory 302898943Sluigi */ 3029204591Sluigi if ((av[0] == NULL) || _substrcmp(*av, "from") != 0) 303098943Sluigi errx(EX_USAGE, "missing ``from''"); 3031204591Sluigi av++; 303298943Sluigi 303398943Sluigi /* 303498943Sluigi * source IP, mandatory 303598943Sluigi */ 303698943Sluigi OR_START(source_ip); 303798943Sluigi NOT_BLOCK; /* optional "not" */ 303898943Sluigi NEED1("missing source address"); 3039145246Sbrooks if (add_src(cmd, *av, proto)) { 3040204591Sluigi av++; 3041102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 3042102087Sluigi prev = cmd; 3043102087Sluigi cmd = next_cmd(cmd); 3044102087Sluigi } 3045145246Sbrooks } else 3046145246Sbrooks errx(EX_USAGE, "bad source address %s", *av); 304798943Sluigi OR_BLOCK(source_ip); 304898943Sluigi 304998943Sluigi /* 305098943Sluigi * source ports, optional 305198943Sluigi */ 305298943Sluigi NOT_BLOCK; /* optional "not" */ 3053204591Sluigi if ( av[0] != NULL ) { 3054140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3055102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 3056204591Sluigi av++; 3057102087Sluigi if (F_LEN(cmd) != 0) 3058102087Sluigi cmd = next_cmd(cmd); 3059101641Sluigi } 306098943Sluigi } 306198943Sluigi 306298943Sluigi /* 3063102087Sluigi * "to", mandatory 306498943Sluigi */ 3065204591Sluigi if ( (av[0] == NULL) || _substrcmp(*av, "to") != 0 ) 306698943Sluigi errx(EX_USAGE, "missing ``to''"); 3067204591Sluigi av++; 306898943Sluigi 306998943Sluigi /* 307098943Sluigi * destination, mandatory 307198943Sluigi */ 307298943Sluigi OR_START(dest_ip); 307398943Sluigi NOT_BLOCK; /* optional "not" */ 307498943Sluigi NEED1("missing dst address"); 3075145246Sbrooks if (add_dst(cmd, *av, proto)) { 3076204591Sluigi av++; 3077102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 3078102087Sluigi prev = cmd; 3079102087Sluigi cmd = next_cmd(cmd); 3080102087Sluigi } 3081145246Sbrooks } else 3082145246Sbrooks errx( EX_USAGE, "bad destination address %s", *av); 308398943Sluigi OR_BLOCK(dest_ip); 308498943Sluigi 308598943Sluigi /* 308698943Sluigi * dest. ports, optional 308798943Sluigi */ 308898943Sluigi NOT_BLOCK; /* optional "not" */ 3089204591Sluigi if (av[0]) { 3090140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3091102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 3092204591Sluigi av++; 3093102087Sluigi if (F_LEN(cmd) != 0) 3094102087Sluigi cmd = next_cmd(cmd); 3095101641Sluigi } 309698943Sluigi } 309798943Sluigi 309898943Sluigiread_options: 3099204591Sluigi if (av[0] && first_cmd == cmd) { 3100102087Sluigi /* 3101102087Sluigi * nothing specified so far, store in the rule to ease 3102102087Sluigi * printout later. 3103102087Sluigi */ 3104102087Sluigi rule->_pad = 1; 3105102087Sluigi } 310698943Sluigi prev = NULL; 3107204591Sluigi while ( av[0] != NULL ) { 3108101641Sluigi char *s; 3109101641Sluigi ipfw_insn_u32 *cmd32; /* alias for cmd */ 311098943Sluigi 3111101641Sluigi s = *av; 3112101641Sluigi cmd32 = (ipfw_insn_u32 *)cmd; 3113101641Sluigi 311498943Sluigi if (*s == '!') { /* alternate syntax for NOT */ 311598943Sluigi if (cmd->len & F_NOT) 311698943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 311798943Sluigi cmd->len = F_NOT; 311898943Sluigi s++; 311998943Sluigi } 312098943Sluigi i = match_token(rule_options, s); 3121204591Sluigi av++; 312298943Sluigi switch(i) { 312398943Sluigi case TOK_NOT: 312498943Sluigi if (cmd->len & F_NOT) 312598943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 312698943Sluigi cmd->len = F_NOT; 312798943Sluigi break; 312898943Sluigi 312998943Sluigi case TOK_OR: 3130101641Sluigi if (open_par == 0 || prev == NULL) 313198943Sluigi errx(EX_USAGE, "invalid \"or\" block\n"); 313298943Sluigi prev->len |= F_OR; 313398943Sluigi break; 3134101641Sluigi 3135101641Sluigi case TOK_STARTBRACE: 3136101641Sluigi if (open_par) 3137101641Sluigi errx(EX_USAGE, "+nested \"(\" not allowed\n"); 3138101641Sluigi open_par = 1; 3139101641Sluigi break; 3140101641Sluigi 3141101641Sluigi case TOK_ENDBRACE: 3142101641Sluigi if (!open_par) 3143101641Sluigi errx(EX_USAGE, "+missing \")\"\n"); 3144101641Sluigi open_par = 0; 3145102087Sluigi prev = NULL; 3146220802Sglebius break; 3147101641Sluigi 314898943Sluigi case TOK_IN: 314998943Sluigi fill_cmd(cmd, O_IN, 0, 0); 315098943Sluigi break; 315198943Sluigi 315298943Sluigi case TOK_OUT: 315398943Sluigi cmd->len ^= F_NOT; /* toggle F_NOT */ 315498943Sluigi fill_cmd(cmd, O_IN, 0, 0); 315598943Sluigi break; 315698943Sluigi 3157136073Sgreen case TOK_DIVERTED: 3158136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 3); 3159136073Sgreen break; 3160136073Sgreen 3161136073Sgreen case TOK_DIVERTEDLOOPBACK: 3162136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 1); 3163136073Sgreen break; 3164136073Sgreen 3165136073Sgreen case TOK_DIVERTEDOUTPUT: 3166136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 2); 3167136073Sgreen break; 3168136073Sgreen 316998943Sluigi case TOK_FRAG: 317098943Sluigi fill_cmd(cmd, O_FRAG, 0, 0); 317198943Sluigi break; 317298943Sluigi 317398943Sluigi case TOK_LAYER2: 317498943Sluigi fill_cmd(cmd, O_LAYER2, 0, 0); 317598943Sluigi break; 317698943Sluigi 317798943Sluigi case TOK_XMIT: 317898943Sluigi case TOK_RECV: 317998943Sluigi case TOK_VIA: 318098943Sluigi NEED1("recv, xmit, via require interface name" 318198943Sluigi " or address"); 318298943Sluigi fill_iface((ipfw_insn_if *)cmd, av[0]); 3183204591Sluigi av++; 318498943Sluigi if (F_LEN(cmd) == 0) /* not a valid address */ 318598943Sluigi break; 318698943Sluigi if (i == TOK_XMIT) 318798943Sluigi cmd->opcode = O_XMIT; 318898943Sluigi else if (i == TOK_RECV) 318998943Sluigi cmd->opcode = O_RECV; 319098943Sluigi else if (i == TOK_VIA) 319198943Sluigi cmd->opcode = O_VIA; 319298943Sluigi break; 319398943Sluigi 319499475Sluigi case TOK_ICMPTYPES: 319599475Sluigi NEED1("icmptypes requires list of types"); 319699475Sluigi fill_icmptypes((ipfw_insn_u32 *)cmd, *av); 3197204591Sluigi av++; 319899475Sluigi break; 3199145246Sbrooks 3200145246Sbrooks case TOK_ICMP6TYPES: 3201145246Sbrooks NEED1("icmptypes requires list of types"); 3202145246Sbrooks fill_icmp6types((ipfw_insn_icmp6 *)cmd, *av); 3203204591Sluigi av++; 3204145246Sbrooks break; 320599475Sluigi 320698943Sluigi case TOK_IPTTL: 320798943Sluigi NEED1("ipttl requires TTL"); 3208116690Sluigi if (strpbrk(*av, "-,")) { 3209116690Sluigi if (!add_ports(cmd, *av, 0, O_IPTTL)) 3210116690Sluigi errx(EX_DATAERR, "invalid ipttl %s", *av); 3211116690Sluigi } else 3212116690Sluigi fill_cmd(cmd, O_IPTTL, 0, strtoul(*av, NULL, 0)); 3213204591Sluigi av++; 321498943Sluigi break; 321598943Sluigi 321698943Sluigi case TOK_IPID: 3217116690Sluigi NEED1("ipid requires id"); 3218116690Sluigi if (strpbrk(*av, "-,")) { 3219116690Sluigi if (!add_ports(cmd, *av, 0, O_IPID)) 3220116690Sluigi errx(EX_DATAERR, "invalid ipid %s", *av); 3221116690Sluigi } else 3222116690Sluigi fill_cmd(cmd, O_IPID, 0, strtoul(*av, NULL, 0)); 3223204591Sluigi av++; 322498943Sluigi break; 322598943Sluigi 322698943Sluigi case TOK_IPLEN: 322798943Sluigi NEED1("iplen requires length"); 3228116690Sluigi if (strpbrk(*av, "-,")) { 3229116690Sluigi if (!add_ports(cmd, *av, 0, O_IPLEN)) 3230116690Sluigi errx(EX_DATAERR, "invalid ip len %s", *av); 3231116690Sluigi } else 3232116690Sluigi fill_cmd(cmd, O_IPLEN, 0, strtoul(*av, NULL, 0)); 3233204591Sluigi av++; 323498943Sluigi break; 323598943Sluigi 323698943Sluigi case TOK_IPVER: 323798943Sluigi NEED1("ipver requires version"); 323898943Sluigi fill_cmd(cmd, O_IPVER, 0, strtoul(*av, NULL, 0)); 3239204591Sluigi av++; 324098943Sluigi break; 324198943Sluigi 324299475Sluigi case TOK_IPPRECEDENCE: 324399475Sluigi NEED1("ipprecedence requires value"); 324499475Sluigi fill_cmd(cmd, O_IPPRECEDENCE, 0, 324599475Sluigi (strtoul(*av, NULL, 0) & 7) << 5); 3246204591Sluigi av++; 324799475Sluigi break; 324899475Sluigi 324998943Sluigi case TOK_IPOPTS: 325098943Sluigi NEED1("missing argument for ipoptions"); 3251101116Sluigi fill_flags(cmd, O_IPOPT, f_ipopts, *av); 3252204591Sluigi av++; 325398943Sluigi break; 325498943Sluigi 325599475Sluigi case TOK_IPTOS: 325699475Sluigi NEED1("missing argument for iptos"); 3257101116Sluigi fill_flags(cmd, O_IPTOS, f_iptos, *av); 3258204591Sluigi av++; 325999475Sluigi break; 326099475Sluigi 326198943Sluigi case TOK_UID: 326298943Sluigi NEED1("uid requires argument"); 326398943Sluigi { 326498943Sluigi char *end; 326598943Sluigi uid_t uid; 326698943Sluigi struct passwd *pwd; 326798943Sluigi 326898943Sluigi cmd->opcode = O_UID; 326998943Sluigi uid = strtoul(*av, &end, 0); 327098943Sluigi pwd = (*end == '\0') ? getpwuid(uid) : getpwnam(*av); 327198943Sluigi if (pwd == NULL) 327298943Sluigi errx(EX_DATAERR, "uid \"%s\" nonexistent", *av); 3273106504Smaxim cmd32->d[0] = pwd->pw_uid; 3274135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 3275204591Sluigi av++; 327698943Sluigi } 327798943Sluigi break; 327898943Sluigi 327998943Sluigi case TOK_GID: 328098943Sluigi NEED1("gid requires argument"); 328198943Sluigi { 328298943Sluigi char *end; 328398943Sluigi gid_t gid; 328498943Sluigi struct group *grp; 328598943Sluigi 328698943Sluigi cmd->opcode = O_GID; 328798943Sluigi gid = strtoul(*av, &end, 0); 328898943Sluigi grp = (*end == '\0') ? getgrgid(gid) : getgrnam(*av); 328998943Sluigi if (grp == NULL) 329098943Sluigi errx(EX_DATAERR, "gid \"%s\" nonexistent", *av); 3291106504Smaxim cmd32->d[0] = grp->gr_gid; 3292135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 3293204591Sluigi av++; 329498943Sluigi } 329598943Sluigi break; 329698943Sluigi 3297133600Scsjp case TOK_JAIL: 3298133600Scsjp NEED1("jail requires argument"); 3299133600Scsjp { 3300133600Scsjp char *end; 3301133600Scsjp int jid; 3302133600Scsjp 3303133600Scsjp cmd->opcode = O_JAIL; 3304133600Scsjp jid = (int)strtol(*av, &end, 0); 3305133600Scsjp if (jid < 0 || *end != '\0') 3306133600Scsjp errx(EX_DATAERR, "jail requires prison ID"); 3307135554Scsjp cmd32->d[0] = (uint32_t)jid; 3308135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 3309204591Sluigi av++; 3310133600Scsjp } 3311133600Scsjp break; 3312133600Scsjp 331398943Sluigi case TOK_ESTAB: 331498943Sluigi fill_cmd(cmd, O_ESTAB, 0, 0); 331598943Sluigi break; 331698943Sluigi 331798943Sluigi case TOK_SETUP: 331898943Sluigi fill_cmd(cmd, O_TCPFLAGS, 0, 331998943Sluigi (TH_SYN) | ( (TH_ACK) & 0xff) <<8 ); 332098943Sluigi break; 332198943Sluigi 3322136075Sgreen case TOK_TCPDATALEN: 3323136075Sgreen NEED1("tcpdatalen requires length"); 3324136075Sgreen if (strpbrk(*av, "-,")) { 3325136075Sgreen if (!add_ports(cmd, *av, 0, O_TCPDATALEN)) 3326136075Sgreen errx(EX_DATAERR, "invalid tcpdata len %s", *av); 3327136075Sgreen } else 3328136075Sgreen fill_cmd(cmd, O_TCPDATALEN, 0, 3329136075Sgreen strtoul(*av, NULL, 0)); 3330204591Sluigi av++; 3331136075Sgreen break; 3332136075Sgreen 333398943Sluigi case TOK_TCPOPTS: 333498943Sluigi NEED1("missing argument for tcpoptions"); 333598943Sluigi fill_flags(cmd, O_TCPOPTS, f_tcpopts, *av); 3336204591Sluigi av++; 333798943Sluigi break; 333898943Sluigi 333998943Sluigi case TOK_TCPSEQ: 334098943Sluigi case TOK_TCPACK: 334198943Sluigi NEED1("tcpseq/tcpack requires argument"); 334298943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 334398943Sluigi cmd->opcode = (i == TOK_TCPSEQ) ? O_TCPSEQ : O_TCPACK; 334498943Sluigi cmd32->d[0] = htonl(strtoul(*av, NULL, 0)); 3345204591Sluigi av++; 334698943Sluigi break; 334798943Sluigi 334898943Sluigi case TOK_TCPWIN: 334998943Sluigi NEED1("tcpwin requires length"); 335098943Sluigi fill_cmd(cmd, O_TCPWIN, 0, 335198943Sluigi htons(strtoul(*av, NULL, 0))); 3352204591Sluigi av++; 335398943Sluigi break; 335498943Sluigi 335598943Sluigi case TOK_TCPFLAGS: 335698943Sluigi NEED1("missing argument for tcpflags"); 335798943Sluigi cmd->opcode = O_TCPFLAGS; 335898943Sluigi fill_flags(cmd, O_TCPFLAGS, f_tcpflags, *av); 3359204591Sluigi av++; 336098943Sluigi break; 336198943Sluigi 336298943Sluigi case TOK_KEEPSTATE: 3363101641Sluigi if (open_par) 3364101641Sluigi errx(EX_USAGE, "keep-state cannot be part " 3365101641Sluigi "of an or block"); 336699909Sluigi if (have_state) 3367101116Sluigi errx(EX_USAGE, "only one of keep-state " 336899909Sluigi "and limit is allowed"); 3369101116Sluigi have_state = cmd; 337098943Sluigi fill_cmd(cmd, O_KEEP_STATE, 0, 0); 337198943Sluigi break; 337298943Sluigi 3373159636Soleg case TOK_LIMIT: { 3374159636Soleg ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 3375159636Soleg int val; 3376159636Soleg 3377101641Sluigi if (open_par) 3378159636Soleg errx(EX_USAGE, 3379159636Soleg "limit cannot be part of an or block"); 338099909Sluigi if (have_state) 3381168819Smaxim errx(EX_USAGE, "only one of keep-state and " 3382159636Soleg "limit is allowed"); 3383101116Sluigi have_state = cmd; 338498943Sluigi 338598943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_limit); 338698943Sluigi cmd->opcode = O_LIMIT; 3387159636Soleg c->limit_mask = c->conn_limit = 0; 338898943Sluigi 3389204591Sluigi while ( av[0] != NULL ) { 3390159636Soleg if ((val = match_token(limit_masks, *av)) <= 0) 339198943Sluigi break; 339298943Sluigi c->limit_mask |= val; 3393204591Sluigi av++; 339498943Sluigi } 3395159636Soleg 339698943Sluigi if (c->limit_mask == 0) 3397159636Soleg errx(EX_USAGE, "limit: missing limit mask"); 3398159636Soleg 3399193516Sluigi GET_UINT_ARG(c->conn_limit, IPFW_ARG_MIN, IPFW_ARG_MAX, 3400182823Srik TOK_LIMIT, rule_options); 3401159636Soleg 3402204591Sluigi av++; 340398943Sluigi break; 3404159636Soleg } 340598943Sluigi 3406102087Sluigi case TOK_PROTO: 3407102087Sluigi NEED1("missing protocol"); 3408145246Sbrooks if (add_proto(cmd, *av, &proto)) { 3409204591Sluigi av++; 3410102098Sluigi } else 3411116438Smaxim errx(EX_DATAERR, "invalid protocol ``%s''", 3412116438Smaxim *av); 3413102087Sluigi break; 3414106505Smaxim 3415102087Sluigi case TOK_SRCIP: 3416102087Sluigi NEED1("missing source IP"); 3417102087Sluigi if (add_srcip(cmd, *av)) { 3418204591Sluigi av++; 3419102087Sluigi } 3420102087Sluigi break; 3421102087Sluigi 3422102087Sluigi case TOK_DSTIP: 3423102087Sluigi NEED1("missing destination IP"); 3424102087Sluigi if (add_dstip(cmd, *av)) { 3425204591Sluigi av++; 3426102087Sluigi } 3427102087Sluigi break; 3428102087Sluigi 3429145246Sbrooks case TOK_SRCIP6: 3430145246Sbrooks NEED1("missing source IP6"); 3431145246Sbrooks if (add_srcip6(cmd, *av)) { 3432204591Sluigi av++; 3433145246Sbrooks } 3434145246Sbrooks break; 3435145246Sbrooks 3436145246Sbrooks case TOK_DSTIP6: 3437145246Sbrooks NEED1("missing destination IP6"); 3438145246Sbrooks if (add_dstip6(cmd, *av)) { 3439204591Sluigi av++; 3440145246Sbrooks } 3441145246Sbrooks break; 3442145246Sbrooks 3443102087Sluigi case TOK_SRCPORT: 3444102087Sluigi NEED1("missing source port"); 3445140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3446102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 3447204591Sluigi av++; 3448102087Sluigi } else 3449102087Sluigi errx(EX_DATAERR, "invalid source port %s", *av); 3450102087Sluigi break; 3451102087Sluigi 3452102087Sluigi case TOK_DSTPORT: 3453102087Sluigi NEED1("missing destination port"); 3454140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3455102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 3456204591Sluigi av++; 3457102087Sluigi } else 3458102087Sluigi errx(EX_DATAERR, "invalid destination port %s", 3459102087Sluigi *av); 3460102087Sluigi break; 3461102087Sluigi 3462102087Sluigi case TOK_MAC: 3463204591Sluigi if (add_mac(cmd, av)) 3464204591Sluigi av += 2; 3465102087Sluigi break; 3466102087Sluigi 3467102087Sluigi case TOK_MACTYPE: 3468102087Sluigi NEED1("missing mac type"); 3469204591Sluigi if (!add_mactype(cmd, *av)) 3470116438Smaxim errx(EX_DATAERR, "invalid mac type %s", *av); 3471204591Sluigi av++; 3472102087Sluigi break; 3473102087Sluigi 3474112250Scjc case TOK_VERREVPATH: 3475112250Scjc fill_cmd(cmd, O_VERREVPATH, 0, 0); 3476112250Scjc break; 3477116919Sluigi 3478128575Sandre case TOK_VERSRCREACH: 3479128575Sandre fill_cmd(cmd, O_VERSRCREACH, 0, 0); 3480128575Sandre break; 3481128575Sandre 3482133387Sandre case TOK_ANTISPOOF: 3483133387Sandre fill_cmd(cmd, O_ANTISPOOF, 0, 0); 3484133387Sandre break; 3485133387Sandre 3486117241Sluigi case TOK_IPSEC: 3487117241Sluigi fill_cmd(cmd, O_IPSEC, 0, 0); 3488117241Sluigi break; 3489117241Sluigi 3490145246Sbrooks case TOK_IPV6: 3491145246Sbrooks fill_cmd(cmd, O_IP6, 0, 0); 3492145246Sbrooks break; 3493145246Sbrooks 3494146894Smlaier case TOK_IPV4: 3495146894Smlaier fill_cmd(cmd, O_IP4, 0, 0); 3496146894Smlaier break; 3497146894Smlaier 3498145246Sbrooks case TOK_EXT6HDR: 3499145246Sbrooks fill_ext6hdr( cmd, *av ); 3500204591Sluigi av++; 3501145246Sbrooks break; 3502145246Sbrooks 3503145246Sbrooks case TOK_FLOWID: 3504145246Sbrooks if (proto != IPPROTO_IPV6 ) 3505145246Sbrooks errx( EX_USAGE, "flow-id filter is active " 3506145246Sbrooks "only for ipv6 protocol\n"); 3507145246Sbrooks fill_flow6( (ipfw_insn_u32 *) cmd, *av ); 3508204591Sluigi av++; 3509145246Sbrooks break; 3510145246Sbrooks 3511117469Sluigi case TOK_COMMENT: 3512204591Sluigi fill_comment(cmd, av); 3513204591Sluigi av[0]=NULL; 3514117469Sluigi break; 3515117469Sluigi 3516158879Soleg case TOK_TAGGED: 3517204591Sluigi if (av[0] && strpbrk(*av, "-,")) { 3518158879Soleg if (!add_ports(cmd, *av, 0, O_TAGGED)) 3519159636Soleg errx(EX_DATAERR, "tagged: invalid tag" 3520159636Soleg " list: %s", *av); 3521158879Soleg } 3522159636Soleg else { 3523159636Soleg uint16_t tag; 3524159636Soleg 3525193516Sluigi GET_UINT_ARG(tag, IPFW_ARG_MIN, IPFW_ARG_MAX, 3526182823Srik TOK_TAGGED, rule_options); 3527159636Soleg fill_cmd(cmd, O_TAGGED, 0, tag); 3528159636Soleg } 3529204591Sluigi av++; 3530158879Soleg break; 3531158879Soleg 3532178888Sjulian case TOK_FIB: 3533178888Sjulian NEED1("fib requires fib number"); 3534178888Sjulian fill_cmd(cmd, O_FIB, 0, strtoul(*av, NULL, 0)); 3535204591Sluigi av++; 3536178888Sjulian break; 3537215179Sluigi case TOK_SOCKARG: 3538215179Sluigi fill_cmd(cmd, O_SOCKARG, 0, 0); 3539215179Sluigi break; 3540178888Sjulian 3541200567Sluigi case TOK_LOOKUP: { 3542200567Sluigi ipfw_insn_u32 *c = (ipfw_insn_u32 *)cmd; 3543200567Sluigi char *p; 3544200567Sluigi int j; 3545200567Sluigi 3546205169Sluigi if (!av[0] || !av[1]) 3547200567Sluigi errx(EX_USAGE, "format: lookup argument tablenum"); 3548200567Sluigi cmd->opcode = O_IP_DST_LOOKUP; 3549200567Sluigi cmd->len |= F_INSN_SIZE(ipfw_insn) + 2; 3550200567Sluigi i = match_token(rule_options, *av); 3551200567Sluigi for (j = 0; lookup_key[j] >= 0 ; j++) { 3552200567Sluigi if (i == lookup_key[j]) 3553200567Sluigi break; 3554200567Sluigi } 3555200567Sluigi if (lookup_key[j] <= 0) 3556200567Sluigi errx(EX_USAGE, "format: cannot lookup on %s", *av); 3557200567Sluigi c->d[1] = j; // i converted to option 3558204591Sluigi av++; 3559200567Sluigi cmd->arg1 = strtoul(*av, &p, 0); 3560200567Sluigi if (p && *p) 3561200567Sluigi errx(EX_USAGE, "format: lookup argument tablenum"); 3562204591Sluigi av++; 3563200567Sluigi } 3564200567Sluigi break; 3565200567Sluigi 356698943Sluigi default: 356798943Sluigi errx(EX_USAGE, "unrecognised option [%d] %s\n", i, s); 356898943Sluigi } 356998943Sluigi if (F_LEN(cmd) > 0) { /* prepare to advance */ 357098943Sluigi prev = cmd; 357198943Sluigi cmd = next_cmd(cmd); 357298943Sluigi } 357398943Sluigi } 357498943Sluigi 357598943Sluigidone: 357698943Sluigi /* 357798943Sluigi * Now copy stuff into the rule. 357898943Sluigi * If we have a keep-state option, the first instruction 357998943Sluigi * must be a PROBE_STATE (which is generated here). 358098943Sluigi * If we have a LOG option, it was stored as the first command, 358198943Sluigi * and now must be moved to the top of the action part. 358298943Sluigi */ 358398943Sluigi dst = (ipfw_insn *)rule->cmd; 358498943Sluigi 358598943Sluigi /* 3586107289Sluigi * First thing to write into the command stream is the match probability. 3587107289Sluigi */ 3588107289Sluigi if (match_prob != 1) { /* 1 means always match */ 3589107289Sluigi dst->opcode = O_PROB; 3590107289Sluigi dst->len = 2; 3591107289Sluigi *((int32_t *)(dst+1)) = (int32_t)(match_prob * 0x7fffffff); 3592107289Sluigi dst += dst->len; 3593107289Sluigi } 3594107289Sluigi 3595107289Sluigi /* 359698943Sluigi * generate O_PROBE_STATE if necessary 359798943Sluigi */ 3598101116Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 359998943Sluigi fill_cmd(dst, O_PROBE_STATE, 0, 0); 360098943Sluigi dst = next_cmd(dst); 360198943Sluigi } 3602158879Soleg 3603158879Soleg /* copy all commands but O_LOG, O_KEEP_STATE, O_LIMIT, O_ALTQ, O_TAG */ 360498943Sluigi for (src = (ipfw_insn *)cmdbuf; src != cmd; src += i) { 360598943Sluigi i = F_LEN(src); 360698943Sluigi 3607101116Sluigi switch (src->opcode) { 3608101116Sluigi case O_LOG: 3609101116Sluigi case O_KEEP_STATE: 3610101116Sluigi case O_LIMIT: 3611136071Sgreen case O_ALTQ: 3612158879Soleg case O_TAG: 3613101116Sluigi break; 3614101116Sluigi default: 3615117328Sluigi bcopy(src, dst, i * sizeof(uint32_t)); 361698943Sluigi dst += i; 361798943Sluigi } 361898943Sluigi } 361998943Sluigi 362098943Sluigi /* 3621101116Sluigi * put back the have_state command as last opcode 3622101116Sluigi */ 3623101295Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 3624101116Sluigi i = F_LEN(have_state); 3625117328Sluigi bcopy(have_state, dst, i * sizeof(uint32_t)); 3626101116Sluigi dst += i; 3627101116Sluigi } 3628101116Sluigi /* 362998943Sluigi * start action section 363098943Sluigi */ 363198943Sluigi rule->act_ofs = dst - rule->cmd; 363298943Sluigi 3633158879Soleg /* put back O_LOG, O_ALTQ, O_TAG if necessary */ 3634136071Sgreen if (have_log) { 3635136071Sgreen i = F_LEN(have_log); 3636136071Sgreen bcopy(have_log, dst, i * sizeof(uint32_t)); 363798943Sluigi dst += i; 363898943Sluigi } 3639136071Sgreen if (have_altq) { 3640136071Sgreen i = F_LEN(have_altq); 3641136071Sgreen bcopy(have_altq, dst, i * sizeof(uint32_t)); 3642136071Sgreen dst += i; 3643136071Sgreen } 3644158879Soleg if (have_tag) { 3645158879Soleg i = F_LEN(have_tag); 3646158879Soleg bcopy(have_tag, dst, i * sizeof(uint32_t)); 3647158879Soleg dst += i; 3648158879Soleg } 364998943Sluigi /* 365098943Sluigi * copy all other actions 365198943Sluigi */ 365298943Sluigi for (src = (ipfw_insn *)actbuf; src != action; src += i) { 365398943Sluigi i = F_LEN(src); 3654117328Sluigi bcopy(src, dst, i * sizeof(uint32_t)); 365598943Sluigi dst += i; 365698943Sluigi } 365798943Sluigi 3658117328Sluigi rule->cmd_len = (uint32_t *)dst - (uint32_t *)(rule->cmd); 3659117469Sluigi i = (char *)dst - (char *)rule; 3660119740Stmm if (do_cmd(IP_FW_ADD, rule, (uintptr_t)&i) == -1) 366198943Sluigi err(EX_UNAVAILABLE, "getsockopt(%s)", "IP_FW_ADD"); 3662187764Sluigi if (!co.do_quiet) 3663117469Sluigi show_ipfw(rule, 0, 0); 366498943Sluigi} 366598943Sluigi 3666187767Sluigi/* 3667187767Sluigi * clear the counters or the log counters. 3668187767Sluigi */ 3669187767Sluigivoid 3670187767Sluigiipfw_zero(int ac, char *av[], int optname /* 0 = IP_FW_ZERO, 1 = IP_FW_RESETLOG */) 367198943Sluigi{ 3672170923Smaxim uint32_t arg, saved_arg; 367398943Sluigi int failed = EX_OK; 3674170923Smaxim char const *errstr; 3675187767Sluigi char const *name = optname ? "RESETLOG" : "ZERO"; 367698943Sluigi 3677187767Sluigi optname = optname ? IP_FW_RESETLOG : IP_FW_ZERO; 3678187767Sluigi 367998943Sluigi av++; ac--; 368098943Sluigi 368198943Sluigi if (!ac) { 368298943Sluigi /* clear all entries */ 3683117328Sluigi if (do_cmd(optname, NULL, 0) < 0) 3684117328Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_FW_%s)", name); 3685187764Sluigi if (!co.do_quiet) 3686117328Sluigi printf("%s.\n", optname == IP_FW_ZERO ? 3687117328Sluigi "Accounting cleared":"Logging counts reset"); 368898943Sluigi 368998943Sluigi return; 369098943Sluigi } 369198943Sluigi 369298943Sluigi while (ac) { 369398943Sluigi /* Rule number */ 369498943Sluigi if (isdigit(**av)) { 3695170923Smaxim arg = strtonum(*av, 0, 0xffff, &errstr); 3696170923Smaxim if (errstr) 3697170923Smaxim errx(EX_DATAERR, 3698170923Smaxim "invalid rule number %s\n", *av); 3699170923Smaxim saved_arg = arg; 3700187764Sluigi if (co.use_set) 3701187764Sluigi arg |= (1 << 24) | ((co.use_set - 1) << 16); 370298943Sluigi av++; 370398943Sluigi ac--; 3704170923Smaxim if (do_cmd(optname, &arg, sizeof(arg))) { 3705117328Sluigi warn("rule %u: setsockopt(IP_FW_%s)", 3706170923Smaxim saved_arg, name); 370798943Sluigi failed = EX_UNAVAILABLE; 3708187764Sluigi } else if (!co.do_quiet) 3709170923Smaxim printf("Entry %d %s.\n", saved_arg, 3710117328Sluigi optname == IP_FW_ZERO ? 3711117328Sluigi "cleared" : "logging count reset"); 371298943Sluigi } else { 371398943Sluigi errx(EX_USAGE, "invalid rule number ``%s''", *av); 371498943Sluigi } 371598943Sluigi } 371698943Sluigi if (failed != EX_OK) 371798943Sluigi exit(failed); 371898943Sluigi} 371998943Sluigi 3720187767Sluigivoid 3721187767Sluigiipfw_flush(int force) 372298943Sluigi{ 3723187764Sluigi int cmd = co.do_pipe ? IP_DUMMYNET_FLUSH : IP_FW_FLUSH; 372498943Sluigi 3725187764Sluigi if (!force && !co.do_quiet) { /* need to ask user */ 372698943Sluigi int c; 372798943Sluigi 372898943Sluigi printf("Are you sure? [yn] "); 372998943Sluigi fflush(stdout); 373098943Sluigi do { 373198943Sluigi c = toupper(getc(stdin)); 373298943Sluigi while (c != '\n' && getc(stdin) != '\n') 373398943Sluigi if (feof(stdin)) 373498943Sluigi return; /* and do not flush */ 373598943Sluigi } while (c != 'Y' && c != 'N'); 373698943Sluigi printf("\n"); 373798943Sluigi if (c == 'N') /* user said no */ 373898943Sluigi return; 373998943Sluigi } 3740204591Sluigi if (co.do_pipe) { 3741204591Sluigi dummynet_flush(); 3742204591Sluigi return; 3743204591Sluigi } 3744170923Smaxim /* `ipfw set N flush` - is the same that `ipfw delete set N` */ 3745187764Sluigi if (co.use_set) { 3746187764Sluigi uint32_t arg = ((co.use_set - 1) & 0xffff) | (1 << 24); 3747170923Smaxim if (do_cmd(IP_FW_DEL, &arg, sizeof(arg)) < 0) 3748170923Smaxim err(EX_UNAVAILABLE, "setsockopt(IP_FW_DEL)"); 3749170923Smaxim } else if (do_cmd(cmd, NULL, 0) < 0) 375098943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_%s_FLUSH)", 3751187764Sluigi co.do_pipe ? "DUMMYNET" : "FW"); 3752187764Sluigi if (!co.do_quiet) 3753187764Sluigi printf("Flushed all %s.\n", co.do_pipe ? "pipes" : "rules"); 375498943Sluigi} 375598943Sluigi 3756117544Sluigi 3757183407Srikstatic void table_list(ipfw_table_entry ent, int need_header); 3758183228Srik 3759117544Sluigi/* 3760130281Sru * This one handles all table-related commands 3761130281Sru * ipfw table N add addr[/masklen] [value] 3762130281Sru * ipfw table N delete addr[/masklen] 3763183407Srik * ipfw table {N | all} flush 3764183407Srik * ipfw table {N | all} list 3765130281Sru */ 3766187767Sluigivoid 3767187767Sluigiipfw_table_handler(int ac, char *av[]) 3768130281Sru{ 3769130281Sru ipfw_table_entry ent; 3770130281Sru int do_add; 3771183407Srik int is_all; 3772183241Srik size_t len; 3773130281Sru char *p; 3774183407Srik uint32_t a; 3775183241Srik uint32_t tables_max; 3776130281Sru 3777183263Skeramida len = sizeof(tables_max); 3778183241Srik if (sysctlbyname("net.inet.ip.fw.tables_max", &tables_max, &len, 3779183241Srik NULL, 0) == -1) { 3780183241Srik#ifdef IPFW_TABLES_MAX 3781183241Srik warn("Warn: Failed to get the max tables number via sysctl. " 3782183241Srik "Using the compiled in defaults. \nThe reason was"); 3783183241Srik tables_max = IPFW_TABLES_MAX; 3784183241Srik#else 3785183241Srik errx(1, "Failed sysctlbyname(\"net.inet.ip.fw.tables_max\")"); 3786183241Srik#endif 3787183241Srik } 3788183241Srik 3789130281Sru ac--; av++; 3790130281Sru if (ac && isdigit(**av)) { 3791130281Sru ent.tbl = atoi(*av); 3792183407Srik is_all = 0; 3793130281Sru ac--; av++; 3794183407Srik } else if (ac && _substrcmp(*av, "all") == 0) { 3795183407Srik ent.tbl = 0; 3796183407Srik is_all = 1; 3797183407Srik ac--; av++; 3798130281Sru } else 3799183407Srik errx(EX_USAGE, "table number or 'all' keyword required"); 3800183241Srik if (ent.tbl >= tables_max) 3801183241Srik errx(EX_USAGE, "The table number exceeds the maximum allowed " 3802183241Srik "value (%d)", tables_max - 1); 3803130281Sru NEED1("table needs command"); 3804183407Srik if (is_all && _substrcmp(*av, "list") != 0 3805183407Srik && _substrcmp(*av, "flush") != 0) 3806183407Srik errx(EX_USAGE, "table number required"); 3807183407Srik 3808140271Sbrooks if (_substrcmp(*av, "add") == 0 || 3809140271Sbrooks _substrcmp(*av, "delete") == 0) { 3810130281Sru do_add = **av == 'a'; 3811130281Sru ac--; av++; 3812130281Sru if (!ac) 3813130281Sru errx(EX_USAGE, "IP address required"); 3814130281Sru p = strchr(*av, '/'); 3815130281Sru if (p) { 3816130281Sru *p++ = '\0'; 3817130281Sru ent.masklen = atoi(p); 3818130281Sru if (ent.masklen > 32) 3819130281Sru errx(EX_DATAERR, "bad width ``%s''", p); 3820130281Sru } else 3821130281Sru ent.masklen = 32; 3822130281Sru if (lookup_host(*av, (struct in_addr *)&ent.addr) != 0) 3823130298Sru errx(EX_NOHOST, "hostname ``%s'' unknown", *av); 3824130281Sru ac--; av++; 3825161424Sjulian if (do_add && ac) { 3826161424Sjulian unsigned int tval; 3827161424Sjulian /* isdigit is a bit of a hack here.. */ 3828161424Sjulian if (strchr(*av, (int)'.') == NULL && isdigit(**av)) { 3829161424Sjulian ent.value = strtoul(*av, NULL, 0); 3830161424Sjulian } else { 3831220802Sglebius if (lookup_host(*av, (struct in_addr *)&tval) == 0) { 3832161424Sjulian /* The value must be stored in host order * 3833161424Sjulian * so that the values < 65k can be distinguished */ 3834220802Sglebius ent.value = ntohl(tval); 3835161424Sjulian } else { 3836161424Sjulian errx(EX_NOHOST, "hostname ``%s'' unknown", *av); 3837161424Sjulian } 3838161424Sjulian } 3839161424Sjulian } else 3840130281Sru ent.value = 0; 3841130281Sru if (do_cmd(do_add ? IP_FW_TABLE_ADD : IP_FW_TABLE_DEL, 3842157335Sjulian &ent, sizeof(ent)) < 0) { 3843155639Sjulian /* If running silent, don't bomb out on these errors. */ 3844187764Sluigi if (!(co.do_quiet && (errno == (do_add ? EEXIST : ESRCH)))) 3845155639Sjulian err(EX_OSERR, "setsockopt(IP_FW_TABLE_%s)", 3846155639Sjulian do_add ? "ADD" : "DEL"); 3847155639Sjulian /* In silent mode, react to a failed add by deleting */ 3848157332Sjulian if (do_add) { 3849155639Sjulian do_cmd(IP_FW_TABLE_DEL, &ent, sizeof(ent)); 3850155639Sjulian if (do_cmd(IP_FW_TABLE_ADD, 3851155639Sjulian &ent, sizeof(ent)) < 0) 3852155639Sjulian err(EX_OSERR, 3853220802Sglebius "setsockopt(IP_FW_TABLE_ADD)"); 3854157332Sjulian } 3855157335Sjulian } 3856140271Sbrooks } else if (_substrcmp(*av, "flush") == 0) { 3857204591Sluigi a = is_all ? tables_max : (uint32_t)(ent.tbl + 1); 3858183407Srik do { 3859183407Srik if (do_cmd(IP_FW_TABLE_FLUSH, &ent.tbl, 3860183407Srik sizeof(ent.tbl)) < 0) 3861183407Srik err(EX_OSERR, "setsockopt(IP_FW_TABLE_FLUSH)"); 3862183407Srik } while (++ent.tbl < a); 3863140271Sbrooks } else if (_substrcmp(*av, "list") == 0) { 3864204591Sluigi a = is_all ? tables_max : (uint32_t)(ent.tbl + 1); 3865183407Srik do { 3866183415Srik table_list(ent, is_all); 3867183407Srik } while (++ent.tbl < a); 3868183228Srik } else 3869183228Srik errx(EX_USAGE, "invalid table command %s", *av); 3870183228Srik} 3871183205Srik 3872183228Srikstatic void 3873183407Sriktable_list(ipfw_table_entry ent, int need_header) 3874183228Srik{ 3875183228Srik ipfw_table *tbl; 3876183228Srik socklen_t l; 3877183228Srik uint32_t a; 3878183205Srik 3879183228Srik a = ent.tbl; 3880183228Srik l = sizeof(a); 3881183228Srik if (do_cmd(IP_FW_TABLE_GETSIZE, &a, (uintptr_t)&l) < 0) 3882183228Srik err(EX_OSERR, "getsockopt(IP_FW_TABLE_GETSIZE)"); 3883183228Srik 3884183228Srik /* If a is zero we have nothing to do, the table is empty. */ 3885183228Srik if (a == 0) 3886183228Srik return; 3887183228Srik 3888183228Srik l = sizeof(*tbl) + a * sizeof(ipfw_table_entry); 3889187716Sluigi tbl = safe_calloc(1, l); 3890183228Srik tbl->tbl = ent.tbl; 3891183228Srik if (do_cmd(IP_FW_TABLE_LIST, tbl, (uintptr_t)&l) < 0) 3892183228Srik err(EX_OSERR, "getsockopt(IP_FW_TABLE_LIST)"); 3893183407Srik if (tbl->cnt && need_header) 3894183407Srik printf("---table(%d)---\n", tbl->tbl); 3895183228Srik for (a = 0; a < tbl->cnt; a++) { 3896183228Srik unsigned int tval; 3897183228Srik tval = tbl->ent[a].value; 3898187764Sluigi if (co.do_value_as_ip) { 3899183228Srik char tbuf[128]; 3900183228Srik strncpy(tbuf, inet_ntoa(*(struct in_addr *) 3901161456Sjulian &tbl->ent[a].addr), 127); 3902183228Srik /* inet_ntoa expects network order */ 3903183228Srik tval = htonl(tval); 3904183228Srik printf("%s/%u %s\n", tbuf, tbl->ent[a].masklen, 3905183228Srik inet_ntoa(*(struct in_addr *)&tval)); 3906183228Srik } else { 3907183228Srik printf("%s/%u %u\n", 3908183228Srik inet_ntoa(*(struct in_addr *)&tbl->ent[a].addr), 3909183228Srik tbl->ent[a].masklen, tval); 3910130281Sru } 3911183228Srik } 3912183228Srik free(tbl); 3913130281Sru} 3914