ipfw2.c revision 187983
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 187983 2009-02-01 16:00:49Z luigi $ 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 { \ 60159636Soleg if (!ac) \ 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 { \ 68159636Soleg long val; \ 69159636Soleg char *end; \ 70159636Soleg \ 71159636Soleg val = strtol(*av, &end, 10); \ 72159636Soleg \ 73159636Soleg if (!isdigit(**av) || *end != '\0' || (val == 0 && errno == EINVAL)) \ 74159636Soleg errx(EX_DATAERR, "%s: invalid argument: %s", \ 75159636Soleg match_value(s_x, tok), *av); \ 76159636Soleg \ 77159636Soleg if (errno == ERANGE || val < min || val > max) \ 78159636Soleg errx(EX_DATAERR, "%s: argument is out of range (%u..%u): %s", \ 79159636Soleg match_value(s_x, tok), min, max, *av); \ 80159636Soleg \ 81159636Soleg if (val == IP_FW_TABLEARG) \ 82159636Soleg errx(EX_DATAERR, "%s: illegal argument value: %s", \ 83159636Soleg match_value(s_x, tok), *av); \ 84159636Soleg arg = val; \ 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 }, 213165648Spiso { "nat", TOK_NAT }, 214178888Sjulian { "setfib", TOK_SETFIB }, 215117328Sluigi { NULL, 0 } /* terminator */ 21698943Sluigi}; 21798943Sluigi 218187769Sluigistatic struct _s_x rule_action_params[] = { 219136071Sgreen { "altq", TOK_ALTQ }, 220136071Sgreen { "log", TOK_LOG }, 221158879Soleg { "tag", TOK_TAG }, 222158879Soleg { "untag", TOK_UNTAG }, 223136071Sgreen { NULL, 0 } /* terminator */ 224136071Sgreen}; 225136071Sgreen 226187769Sluigistatic struct _s_x rule_options[] = { 227158879Soleg { "tagged", TOK_TAGGED }, 22898943Sluigi { "uid", TOK_UID }, 22998943Sluigi { "gid", TOK_GID }, 230133600Scsjp { "jail", TOK_JAIL }, 23198943Sluigi { "in", TOK_IN }, 23298943Sluigi { "limit", TOK_LIMIT }, 23398943Sluigi { "keep-state", TOK_KEEPSTATE }, 23498943Sluigi { "bridged", TOK_LAYER2 }, 23598943Sluigi { "layer2", TOK_LAYER2 }, 23698943Sluigi { "out", TOK_OUT }, 237136073Sgreen { "diverted", TOK_DIVERTED }, 238136073Sgreen { "diverted-loopback", TOK_DIVERTEDLOOPBACK }, 239136073Sgreen { "diverted-output", TOK_DIVERTEDOUTPUT }, 24098943Sluigi { "xmit", TOK_XMIT }, 24198943Sluigi { "recv", TOK_RECV }, 24298943Sluigi { "via", TOK_VIA }, 24398943Sluigi { "fragment", TOK_FRAG }, 24498943Sluigi { "frag", TOK_FRAG }, 245178888Sjulian { "fib", TOK_FIB }, 24698943Sluigi { "ipoptions", TOK_IPOPTS }, 24798943Sluigi { "ipopts", TOK_IPOPTS }, 24898943Sluigi { "iplen", TOK_IPLEN }, 24998943Sluigi { "ipid", TOK_IPID }, 25098943Sluigi { "ipprecedence", TOK_IPPRECEDENCE }, 25198943Sluigi { "iptos", TOK_IPTOS }, 25298943Sluigi { "ipttl", TOK_IPTTL }, 25398943Sluigi { "ipversion", TOK_IPVER }, 25498943Sluigi { "ipver", TOK_IPVER }, 25598943Sluigi { "estab", TOK_ESTAB }, 25698943Sluigi { "established", TOK_ESTAB }, 25798943Sluigi { "setup", TOK_SETUP }, 258136075Sgreen { "tcpdatalen", TOK_TCPDATALEN }, 25998943Sluigi { "tcpflags", TOK_TCPFLAGS }, 26098943Sluigi { "tcpflgs", TOK_TCPFLAGS }, 26198943Sluigi { "tcpoptions", TOK_TCPOPTS }, 26298943Sluigi { "tcpopts", TOK_TCPOPTS }, 26398943Sluigi { "tcpseq", TOK_TCPSEQ }, 26498943Sluigi { "tcpack", TOK_TCPACK }, 26598943Sluigi { "tcpwin", TOK_TCPWIN }, 26699909Sluigi { "icmptype", TOK_ICMPTYPES }, 26798943Sluigi { "icmptypes", TOK_ICMPTYPES }, 268102087Sluigi { "dst-ip", TOK_DSTIP }, 269102087Sluigi { "src-ip", TOK_SRCIP }, 270102087Sluigi { "dst-port", TOK_DSTPORT }, 271102087Sluigi { "src-port", TOK_SRCPORT }, 272102087Sluigi { "proto", TOK_PROTO }, 273102087Sluigi { "MAC", TOK_MAC }, 274102087Sluigi { "mac", TOK_MAC }, 275102087Sluigi { "mac-type", TOK_MACTYPE }, 276112250Scjc { "verrevpath", TOK_VERREVPATH }, 277128575Sandre { "versrcreach", TOK_VERSRCREACH }, 278133387Sandre { "antispoof", TOK_ANTISPOOF }, 279117241Sluigi { "ipsec", TOK_IPSEC }, 280145246Sbrooks { "icmp6type", TOK_ICMP6TYPES }, 281145246Sbrooks { "icmp6types", TOK_ICMP6TYPES }, 282145246Sbrooks { "ext6hdr", TOK_EXT6HDR}, 283145246Sbrooks { "flow-id", TOK_FLOWID}, 284145246Sbrooks { "ipv6", TOK_IPV6}, 285145246Sbrooks { "ip6", TOK_IPV6}, 286146894Smlaier { "ipv4", TOK_IPV4}, 287146894Smlaier { "ip4", TOK_IPV4}, 288145246Sbrooks { "dst-ipv6", TOK_DSTIP6}, 289145246Sbrooks { "dst-ip6", TOK_DSTIP6}, 290145246Sbrooks { "src-ipv6", TOK_SRCIP6}, 291145246Sbrooks { "src-ip6", TOK_SRCIP6}, 292117469Sluigi { "//", TOK_COMMENT }, 29398943Sluigi 29498943Sluigi { "not", TOK_NOT }, /* pseudo option */ 29598943Sluigi { "!", /* escape ? */ TOK_NOT }, /* pseudo option */ 29698943Sluigi { "or", TOK_OR }, /* pseudo option */ 29798943Sluigi { "|", /* escape */ TOK_OR }, /* pseudo option */ 298101641Sluigi { "{", TOK_STARTBRACE }, /* pseudo option */ 299101641Sluigi { "(", TOK_STARTBRACE }, /* pseudo option */ 300101641Sluigi { "}", TOK_ENDBRACE }, /* pseudo option */ 301101641Sluigi { ")", TOK_ENDBRACE }, /* pseudo option */ 302117328Sluigi { NULL, 0 } /* terminator */ 30398943Sluigi}; 30498943Sluigi 305187787Sluigi/* 306187787Sluigi * The following is used to generate a printable argument for 307187787Sluigi * 64-bit numbers, irrespective of platform alignment and bit size. 308187787Sluigi * Because all the printf in this program use %llu as a format, 309187787Sluigi * we just return an unsigned long long, which is larger than 310187787Sluigi * we need in certain cases, but saves the hassle of using 311187787Sluigi * PRIu64 as a format specifier. 312187787Sluigi * We don't care about inlining, this is not performance critical code. 313187787Sluigi */ 314187787Sluigiunsigned long long 315187787Sluigialign_uint64(const uint64_t *pll) 316187787Sluigi{ 317117328Sluigi uint64_t ret; 318115793Sticso 319115793Sticso bcopy (pll, &ret, sizeof(ret)); 320115793Sticso return ret; 321129389Sstefanf} 322115793Sticso 323187767Sluigivoid * 324187716Sluigisafe_calloc(size_t number, size_t size) 325187716Sluigi{ 326187716Sluigi void *ret = calloc(number, size); 327187716Sluigi 328187716Sluigi if (ret == NULL) 329187716Sluigi err(EX_OSERR, "calloc"); 330187716Sluigi return ret; 331187716Sluigi} 332187716Sluigi 333187767Sluigivoid * 334187716Sluigisafe_realloc(void *ptr, size_t size) 335187716Sluigi{ 336187716Sluigi void *ret = realloc(ptr, size); 337187716Sluigi 338187716Sluigi if (ret == NULL) 339187716Sluigi err(EX_OSERR, "realloc"); 340187716Sluigi return ret; 341187716Sluigi} 342187716Sluigi 343117328Sluigi/* 344117328Sluigi * conditionally runs the command. 345117328Sluigi */ 346187769Sluigiint 347119740Stmmdo_cmd(int optname, void *optval, uintptr_t optlen) 348117328Sluigi{ 349117328Sluigi static int s = -1; /* the socket */ 350117328Sluigi int i; 351117577Sluigi 352187764Sluigi if (co.test_only) 353117328Sluigi return 0; 354117328Sluigi 355117328Sluigi if (s == -1) 356117328Sluigi s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); 357117328Sluigi if (s < 0) 358117328Sluigi err(EX_UNAVAILABLE, "socket"); 359117328Sluigi 360117328Sluigi if (optname == IP_FW_GET || optname == IP_DUMMYNET_GET || 361130281Sru optname == IP_FW_ADD || optname == IP_FW_TABLE_LIST || 362165648Spiso optname == IP_FW_TABLE_GETSIZE || 363165648Spiso optname == IP_FW_NAT_GET_CONFIG || 364165648Spiso optname == IP_FW_NAT_GET_LOG) 365117328Sluigi i = getsockopt(s, IPPROTO_IP, optname, optval, 366117328Sluigi (socklen_t *)optlen); 367117328Sluigi else 368117328Sluigi i = setsockopt(s, IPPROTO_IP, optname, optval, optlen); 369117328Sluigi return i; 370117328Sluigi} 371117328Sluigi 37298943Sluigi/** 37398943Sluigi * match_token takes a table and a string, returns the value associated 374117328Sluigi * with the string (-1 in case of failure). 37598943Sluigi */ 376187769Sluigiint 37798943Sluigimatch_token(struct _s_x *table, char *string) 37898943Sluigi{ 37998943Sluigi struct _s_x *pt; 380117469Sluigi uint i = strlen(string); 38198943Sluigi 38298943Sluigi for (pt = table ; i && pt->s != NULL ; pt++) 38398943Sluigi if (strlen(pt->s) == i && !bcmp(string, pt->s, i)) 38498943Sluigi return pt->x; 38598943Sluigi return -1; 386129389Sstefanf} 38798943Sluigi 388117328Sluigi/** 389117328Sluigi * match_value takes a table and a value, returns the string associated 390117328Sluigi * with the value (NULL in case of failure). 391117328Sluigi */ 392187770Sluigichar const * 393117469Sluigimatch_value(struct _s_x *p, int value) 39498943Sluigi{ 39598943Sluigi for (; p->s != NULL; p++) 39698943Sluigi if (p->x == value) 39798943Sluigi return p->s; 39898943Sluigi return NULL; 39998943Sluigi} 40098943Sluigi 40198943Sluigi/* 402140271Sbrooks * _substrcmp takes two strings and returns 1 if they do not match, 403140271Sbrooks * and 0 if they match exactly or the first string is a sub-string 404140271Sbrooks * of the second. A warning is printed to stderr in the case that the 405140271Sbrooks * first string is a sub-string of the second. 406140271Sbrooks * 407140271Sbrooks * This function will be removed in the future through the usual 408140271Sbrooks * deprecation process. 409140271Sbrooks */ 410187767Sluigiint 411140271Sbrooks_substrcmp(const char *str1, const char* str2) 412140271Sbrooks{ 413140271Sbrooks 414140271Sbrooks if (strncmp(str1, str2, strlen(str1)) != 0) 415140271Sbrooks return 1; 416140271Sbrooks 417140271Sbrooks if (strlen(str1) != strlen(str2)) 418140271Sbrooks warnx("DEPRECATED: '%s' matched '%s' as a sub-string", 419140271Sbrooks str1, str2); 420140271Sbrooks return 0; 421140271Sbrooks} 422140271Sbrooks 423140271Sbrooks/* 424140271Sbrooks * _substrcmp2 takes three strings and returns 1 if the first two do not match, 425140271Sbrooks * and 0 if they match exactly or the second string is a sub-string 426140271Sbrooks * of the first. A warning is printed to stderr in the case that the 427140271Sbrooks * first string does not match the third. 428140271Sbrooks * 429140271Sbrooks * This function exists to warn about the bizzare construction 430140271Sbrooks * strncmp(str, "by", 2) which is used to allow people to use a shotcut 431140271Sbrooks * for "bytes". The problem is that in addition to accepting "by", 432140271Sbrooks * "byt", "byte", and "bytes", it also excepts "by_rabid_dogs" and any 433140271Sbrooks * other string beginning with "by". 434140271Sbrooks * 435140271Sbrooks * This function will be removed in the future through the usual 436140271Sbrooks * deprecation process. 437140271Sbrooks */ 438187769Sluigiint 439140271Sbrooks_substrcmp2(const char *str1, const char* str2, const char* str3) 440140271Sbrooks{ 441140271Sbrooks 442140271Sbrooks if (strncmp(str1, str2, strlen(str2)) != 0) 443140271Sbrooks return 1; 444140271Sbrooks 445140271Sbrooks if (strcmp(str1, str3) != 0) 446140271Sbrooks warnx("DEPRECATED: '%s' matched '%s'", 447140271Sbrooks str1, str3); 448140271Sbrooks return 0; 449140271Sbrooks} 450140271Sbrooks 451140271Sbrooks/* 45298943Sluigi * prints one port, symbolic or numeric 45398943Sluigi */ 45498943Sluigistatic void 455117328Sluigiprint_port(int proto, uint16_t port) 45698943Sluigi{ 45798943Sluigi 45898943Sluigi if (proto == IPPROTO_ETHERTYPE) { 459117469Sluigi char const *s; 46098943Sluigi 461187764Sluigi if (co.do_resolv && (s = match_value(ether_types, port)) ) 46298943Sluigi printf("%s", s); 46398943Sluigi else 46498943Sluigi printf("0x%04x", port); 46598943Sluigi } else { 46698943Sluigi struct servent *se = NULL; 467187764Sluigi if (co.do_resolv) { 46898943Sluigi struct protoent *pe = getprotobynumber(proto); 46998943Sluigi 47098943Sluigi se = getservbyport(htons(port), pe ? pe->p_name : NULL); 47198943Sluigi } 47298943Sluigi if (se) 47398943Sluigi printf("%s", se->s_name); 47498943Sluigi else 47598943Sluigi printf("%d", port); 47698943Sluigi } 47798943Sluigi} 47898943Sluigi 479187769Sluigistatic struct _s_x _port_name[] = { 480117328Sluigi {"dst-port", O_IP_DSTPORT}, 481117328Sluigi {"src-port", O_IP_SRCPORT}, 482117328Sluigi {"ipid", O_IPID}, 483117328Sluigi {"iplen", O_IPLEN}, 484117328Sluigi {"ipttl", O_IPTTL}, 485117328Sluigi {"mac-type", O_MAC_TYPE}, 486136075Sgreen {"tcpdatalen", O_TCPDATALEN}, 487158879Soleg {"tagged", O_TAGGED}, 488117328Sluigi {NULL, 0} 489117328Sluigi}; 490117328Sluigi 49198943Sluigi/* 492117328Sluigi * Print the values in a list 16-bit items of the types above. 49398943Sluigi * XXX todo: add support for mask. 49498943Sluigi */ 49598943Sluigistatic void 496102087Sluigiprint_newports(ipfw_insn_u16 *cmd, int proto, int opcode) 49798943Sluigi{ 498117328Sluigi uint16_t *p = cmd->ports; 49998943Sluigi int i; 500117469Sluigi char const *sep; 50198943Sluigi 502116690Sluigi if (opcode != 0) { 503117328Sluigi sep = match_value(_port_name, opcode); 504117328Sluigi if (sep == NULL) 505116690Sluigi sep = "???"; 506116690Sluigi printf (" %s", sep); 507116690Sluigi } 508116690Sluigi sep = " "; 50998943Sluigi for (i = F_LEN((ipfw_insn *)cmd) - 1; i > 0; i--, p += 2) { 51098943Sluigi printf(sep); 51198943Sluigi print_port(proto, p[0]); 51298943Sluigi if (p[0] != p[1]) { 51398943Sluigi printf("-"); 51498943Sluigi print_port(proto, p[1]); 51598943Sluigi } 51698943Sluigi sep = ","; 51798943Sluigi } 51898943Sluigi} 51998943Sluigi 52098943Sluigi/* 52198943Sluigi * Like strtol, but also translates service names into port numbers 52298943Sluigi * for some protocols. 52398943Sluigi * In particular: 52498943Sluigi * proto == -1 disables the protocol check; 52598943Sluigi * proto == IPPROTO_ETHERTYPE looks up an internal table 52698943Sluigi * proto == <some value in /etc/protocols> matches the values there. 527101628Sluigi * Returns *end == s in case the parameter is not found. 52898943Sluigi */ 52998943Sluigistatic int 53098943Sluigistrtoport(char *s, char **end, int base, int proto) 53198943Sluigi{ 532101628Sluigi char *p, *buf; 533101628Sluigi char *s1; 53498943Sluigi int i; 53598943Sluigi 536101628Sluigi *end = s; /* default - not found */ 537117577Sluigi if (*s == '\0') 538101628Sluigi return 0; /* not found */ 539106505Smaxim 54098943Sluigi if (isdigit(*s)) 54198943Sluigi return strtol(s, end, base); 54298943Sluigi 54398943Sluigi /* 544101628Sluigi * find separator. '\\' escapes the next char. 54598943Sluigi */ 546101628Sluigi for (s1 = s; *s1 && (isalnum(*s1) || *s1 == '\\') ; s1++) 547101628Sluigi if (*s1 == '\\' && s1[1] != '\0') 548101628Sluigi s1++; 54998943Sluigi 550187716Sluigi buf = safe_calloc(s1 - s + 1, 1); 551101628Sluigi 552101628Sluigi /* 553101628Sluigi * copy into a buffer skipping backslashes 554101628Sluigi */ 555101628Sluigi for (p = s, i = 0; p != s1 ; p++) 556117577Sluigi if (*p != '\\') 557101628Sluigi buf[i++] = *p; 558101628Sluigi buf[i++] = '\0'; 559101628Sluigi 56098943Sluigi if (proto == IPPROTO_ETHERTYPE) { 561101628Sluigi i = match_token(ether_types, buf); 562101628Sluigi free(buf); 563101628Sluigi if (i != -1) { /* found */ 56498943Sluigi *end = s1; 56598943Sluigi return i; 56698943Sluigi } 56798943Sluigi } else { 56898943Sluigi struct protoent *pe = NULL; 56998943Sluigi struct servent *se; 57098943Sluigi 57198943Sluigi if (proto != 0) 57298943Sluigi pe = getprotobynumber(proto); 57398943Sluigi setservent(1); 574101628Sluigi se = getservbyname(buf, pe ? pe->p_name : NULL); 575101628Sluigi free(buf); 57698943Sluigi if (se != NULL) { 57798943Sluigi *end = s1; 57898943Sluigi return ntohs(se->s_port); 57998943Sluigi } 58098943Sluigi } 581101628Sluigi return 0; /* not found */ 58298943Sluigi} 58398943Sluigi 58498943Sluigi/* 585117328Sluigi * Fill the body of the command with the list of port ranges. 58698943Sluigi */ 58798943Sluigistatic int 58898943Sluigifill_newports(ipfw_insn_u16 *cmd, char *av, int proto) 58998943Sluigi{ 590117328Sluigi uint16_t a, b, *p = cmd->ports; 59198943Sluigi int i = 0; 592102087Sluigi char *s = av; 59398943Sluigi 594102087Sluigi while (*s) { 59598943Sluigi a = strtoport(av, &s, 0, proto); 596159636Soleg if (s == av) /* empty or invalid argument */ 597159636Soleg return (0); 598159636Soleg 599159636Soleg switch (*s) { 600159636Soleg case '-': /* a range */ 601159636Soleg av = s + 1; 60298943Sluigi b = strtoport(av, &s, 0, proto); 603159636Soleg /* Reject expressions like '1-abc' or '1-2-3'. */ 604159636Soleg if (s == av || (*s != ',' && *s != '\0')) 605159636Soleg return (0); 60698943Sluigi p[0] = a; 60798943Sluigi p[1] = b; 608159636Soleg break; 609159636Soleg case ',': /* comma separated list */ 610159636Soleg case '\0': 61198943Sluigi p[0] = p[1] = a; 612159636Soleg break; 613159636Soleg default: 614159636Soleg warnx("port list: invalid separator <%c> in <%s>", 615101978Sluigi *s, av); 616159636Soleg return (0); 617159636Soleg } 618159636Soleg 619102087Sluigi i++; 620102087Sluigi p += 2; 621159636Soleg av = s + 1; 62298943Sluigi } 62398943Sluigi if (i > 0) { 624159636Soleg if (i + 1 > F_LEN_MASK) 625102087Sluigi errx(EX_DATAERR, "too many ports/ranges\n"); 626159636Soleg cmd->o.len |= i + 1; /* leave F_NOT and F_OR untouched */ 62798943Sluigi } 628159636Soleg return (i); 62998943Sluigi} 63098943Sluigi 63198943Sluigistatic struct _s_x icmpcodes[] = { 63298943Sluigi { "net", ICMP_UNREACH_NET }, 63398943Sluigi { "host", ICMP_UNREACH_HOST }, 63498943Sluigi { "protocol", ICMP_UNREACH_PROTOCOL }, 63598943Sluigi { "port", ICMP_UNREACH_PORT }, 63698943Sluigi { "needfrag", ICMP_UNREACH_NEEDFRAG }, 63798943Sluigi { "srcfail", ICMP_UNREACH_SRCFAIL }, 63898943Sluigi { "net-unknown", ICMP_UNREACH_NET_UNKNOWN }, 63998943Sluigi { "host-unknown", ICMP_UNREACH_HOST_UNKNOWN }, 64098943Sluigi { "isolated", ICMP_UNREACH_ISOLATED }, 64198943Sluigi { "net-prohib", ICMP_UNREACH_NET_PROHIB }, 64298943Sluigi { "host-prohib", ICMP_UNREACH_HOST_PROHIB }, 64398943Sluigi { "tosnet", ICMP_UNREACH_TOSNET }, 64498943Sluigi { "toshost", ICMP_UNREACH_TOSHOST }, 64598943Sluigi { "filter-prohib", ICMP_UNREACH_FILTER_PROHIB }, 64698943Sluigi { "host-precedence", ICMP_UNREACH_HOST_PRECEDENCE }, 64798943Sluigi { "precedence-cutoff", ICMP_UNREACH_PRECEDENCE_CUTOFF }, 64898943Sluigi { NULL, 0 } 64998943Sluigi}; 65098943Sluigi 65198943Sluigistatic void 65298943Sluigifill_reject_code(u_short *codep, char *str) 65398943Sluigi{ 65498943Sluigi int val; 65598943Sluigi char *s; 65698943Sluigi 65798943Sluigi val = strtoul(str, &s, 0); 65898943Sluigi if (s == str || *s != '\0' || val >= 0x100) 65998943Sluigi val = match_token(icmpcodes, str); 660102087Sluigi if (val < 0) 66198943Sluigi errx(EX_DATAERR, "unknown ICMP unreachable code ``%s''", str); 66298943Sluigi *codep = val; 66398943Sluigi return; 66498943Sluigi} 66598943Sluigi 66698943Sluigistatic void 667117328Sluigiprint_reject_code(uint16_t code) 66898943Sluigi{ 669117469Sluigi char const *s = match_value(icmpcodes, code); 67098943Sluigi 67198943Sluigi if (s != NULL) 67299475Sluigi printf("unreach %s", s); 67398943Sluigi else 67499475Sluigi printf("unreach %u", code); 67598943Sluigi} 67698943Sluigi 67798943Sluigi/* 67898943Sluigi * Returns the number of bits set (from left) in a contiguous bitmask, 67998943Sluigi * or -1 if the mask is not contiguous. 68098943Sluigi * XXX this needs a proper fix. 68198943Sluigi * This effectively works on masks in big-endian (network) format. 68298943Sluigi * when compiled on little endian architectures. 68398943Sluigi * 68498943Sluigi * First bit is bit 7 of the first byte -- note, for MAC addresses, 68598943Sluigi * the first bit on the wire is bit 0 of the first byte. 68698943Sluigi * len is the max length in bits. 68798943Sluigi */ 688187770Sluigiint 689117577Sluigicontigmask(uint8_t *p, int len) 69098943Sluigi{ 69198943Sluigi int i, n; 692117577Sluigi 69398943Sluigi for (i=0; i<len ; i++) 69498943Sluigi if ( (p[i/8] & (1 << (7 - (i%8)))) == 0) /* first bit unset */ 69598943Sluigi break; 69698943Sluigi for (n=i+1; n < len; n++) 69798943Sluigi if ( (p[n/8] & (1 << (7 - (n%8)))) != 0) 69898943Sluigi return -1; /* mask not contiguous */ 69998943Sluigi return i; 70098943Sluigi} 70198943Sluigi 70298943Sluigi/* 70398943Sluigi * print flags set/clear in the two bitmasks passed as parameters. 70498943Sluigi * There is a specialized check for f_tcpflags. 70598943Sluigi */ 70698943Sluigistatic void 707117469Sluigiprint_flags(char const *name, ipfw_insn *cmd, struct _s_x *list) 70898943Sluigi{ 709117469Sluigi char const *comma = ""; 71098943Sluigi int i; 711117577Sluigi uint8_t set = cmd->arg1 & 0xff; 712117577Sluigi uint8_t clear = (cmd->arg1 >> 8) & 0xff; 71398943Sluigi 71498943Sluigi if (list == f_tcpflags && set == TH_SYN && clear == TH_ACK) { 71598943Sluigi printf(" setup"); 71698943Sluigi return; 71798943Sluigi } 71898943Sluigi 71998943Sluigi printf(" %s ", name); 72098943Sluigi for (i=0; list[i].x != 0; i++) { 72198943Sluigi if (set & list[i].x) { 72298943Sluigi set &= ~list[i].x; 72398943Sluigi printf("%s%s", comma, list[i].s); 72498943Sluigi comma = ","; 72598943Sluigi } 72698943Sluigi if (clear & list[i].x) { 72798943Sluigi clear &= ~list[i].x; 72898943Sluigi printf("%s!%s", comma, list[i].s); 72998943Sluigi comma = ","; 73098943Sluigi } 73198943Sluigi } 73298943Sluigi} 73398943Sluigi 73498943Sluigi/* 73598943Sluigi * Print the ip address contained in a command. 73698943Sluigi */ 73798943Sluigistatic void 738117469Sluigiprint_ip(ipfw_insn_ip *cmd, char const *s) 73998943Sluigi{ 74098943Sluigi struct hostent *he = NULL; 741117328Sluigi int len = F_LEN((ipfw_insn *)cmd); 742117328Sluigi uint32_t *a = ((ipfw_insn_u32 *)cmd)->d; 74398943Sluigi 744102087Sluigi printf("%s%s ", cmd->o.len & F_NOT ? " not": "", s); 74598943Sluigi 74698943Sluigi if (cmd->o.opcode == O_IP_SRC_ME || cmd->o.opcode == O_IP_DST_ME) { 74798943Sluigi printf("me"); 74898943Sluigi return; 74998943Sluigi } 750130281Sru if (cmd->o.opcode == O_IP_SRC_LOOKUP || 751130281Sru cmd->o.opcode == O_IP_DST_LOOKUP) { 752130281Sru printf("table(%u", ((ipfw_insn *)cmd)->arg1); 753130281Sru if (len == F_INSN_SIZE(ipfw_insn_u32)) 754130281Sru printf(",%u", *a); 755130281Sru printf(")"); 756130281Sru return; 757130281Sru } 75898943Sluigi if (cmd->o.opcode == O_IP_SRC_SET || cmd->o.opcode == O_IP_DST_SET) { 759117328Sluigi uint32_t x, *map = (uint32_t *)&(cmd->mask); 760116716Sluigi int i, j; 76198943Sluigi char comma = '{'; 76298943Sluigi 76398943Sluigi x = cmd->o.arg1 - 1; 76498943Sluigi x = htonl( ~x ); 76598943Sluigi cmd->addr.s_addr = htonl(cmd->addr.s_addr); 76698943Sluigi printf("%s/%d", inet_ntoa(cmd->addr), 767117577Sluigi contigmask((uint8_t *)&x, 32)); 76898943Sluigi x = cmd->addr.s_addr = htonl(cmd->addr.s_addr); 76998943Sluigi x &= 0xff; /* base */ 770116716Sluigi /* 771116716Sluigi * Print bits and ranges. 772116716Sluigi * Locate first bit set (i), then locate first bit unset (j). 773116716Sluigi * If we have 3+ consecutive bits set, then print them as a 774116716Sluigi * range, otherwise only print the initial bit and rescan. 775116716Sluigi */ 77698943Sluigi for (i=0; i < cmd->o.arg1; i++) 777117328Sluigi if (map[i/32] & (1<<(i & 31))) { 778116716Sluigi for (j=i+1; j < cmd->o.arg1; j++) 779117328Sluigi if (!(map[ j/32] & (1<<(j & 31)))) 780116716Sluigi break; 78198943Sluigi printf("%c%d", comma, i+x); 782116716Sluigi if (j>i+2) { /* range has at least 3 elements */ 783116716Sluigi printf("-%d", j-1+x); 784116716Sluigi i = j-1; 785116716Sluigi } 78698943Sluigi comma = ','; 78798943Sluigi } 78898943Sluigi printf("}"); 78998943Sluigi return; 79098943Sluigi } 791117328Sluigi /* 792117328Sluigi * len == 2 indicates a single IP, whereas lists of 1 or more 793117328Sluigi * addr/mask pairs have len = (2n+1). We convert len to n so we 794117328Sluigi * use that to count the number of entries. 795117328Sluigi */ 796117328Sluigi for (len = len / 2; len > 0; len--, a += 2) { 797117328Sluigi int mb = /* mask length */ 798117328Sluigi (cmd->o.opcode == O_IP_SRC || cmd->o.opcode == O_IP_DST) ? 799117577Sluigi 32 : contigmask((uint8_t *)&(a[1]), 32); 800187764Sluigi if (mb == 32 && co.do_resolv) 801117328Sluigi he = gethostbyaddr((char *)&(a[0]), sizeof(u_long), AF_INET); 80298943Sluigi if (he != NULL) /* resolved to name */ 80398943Sluigi printf("%s", he->h_name); 80498943Sluigi else if (mb == 0) /* any */ 80598943Sluigi printf("any"); 80698943Sluigi else { /* numeric IP followed by some kind of mask */ 807117328Sluigi printf("%s", inet_ntoa( *((struct in_addr *)&a[0]) ) ); 80898943Sluigi if (mb < 0) 809117328Sluigi printf(":%s", inet_ntoa( *((struct in_addr *)&a[1]) ) ); 81098943Sluigi else if (mb < 32) 81198943Sluigi printf("/%d", mb); 81298943Sluigi } 813117328Sluigi if (len > 1) 814117328Sluigi printf(","); 815117328Sluigi } 81698943Sluigi} 81798943Sluigi 81898943Sluigi/* 81998943Sluigi * prints a MAC address/mask pair 82098943Sluigi */ 82198943Sluigistatic void 822117577Sluigiprint_mac(uint8_t *addr, uint8_t *mask) 82398943Sluigi{ 82498943Sluigi int l = contigmask(mask, 48); 82598943Sluigi 82698943Sluigi if (l == 0) 82798943Sluigi printf(" any"); 82898943Sluigi else { 82998943Sluigi printf(" %02x:%02x:%02x:%02x:%02x:%02x", 83098943Sluigi addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 83198943Sluigi if (l == -1) 83298943Sluigi printf("&%02x:%02x:%02x:%02x:%02x:%02x", 83398943Sluigi mask[0], mask[1], mask[2], 83498943Sluigi mask[3], mask[4], mask[5]); 83598943Sluigi else if (l < 48) 83698943Sluigi printf("/%d", l); 83798943Sluigi } 83898943Sluigi} 83998943Sluigi 84099475Sluigistatic void 84199475Sluigifill_icmptypes(ipfw_insn_u32 *cmd, char *av) 84299475Sluigi{ 843117328Sluigi uint8_t type; 84498943Sluigi 84599475Sluigi cmd->d[0] = 0; 84699475Sluigi while (*av) { 84799475Sluigi if (*av == ',') 84899475Sluigi av++; 84999475Sluigi 85099475Sluigi type = strtoul(av, &av, 0); 85199475Sluigi 85299475Sluigi if (*av != ',' && *av != '\0') 85399475Sluigi errx(EX_DATAERR, "invalid ICMP type"); 85499475Sluigi 85599475Sluigi if (type > 31) 85699475Sluigi errx(EX_DATAERR, "ICMP type out of range"); 85799475Sluigi 85899475Sluigi cmd->d[0] |= 1 << type; 85999475Sluigi } 86099475Sluigi cmd->o.opcode = O_ICMPTYPE; 86199475Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 86299475Sluigi} 86399475Sluigi 86499475Sluigistatic void 86599475Sluigiprint_icmptypes(ipfw_insn_u32 *cmd) 86699475Sluigi{ 86799475Sluigi int i; 86899475Sluigi char sep= ' '; 86999475Sluigi 87099475Sluigi printf(" icmptypes"); 87199475Sluigi for (i = 0; i < 32; i++) { 87299475Sluigi if ( (cmd->d[0] & (1 << (i))) == 0) 87399475Sluigi continue; 87499475Sluigi printf("%c%d", sep, i); 87599475Sluigi sep = ','; 87699475Sluigi } 87799475Sluigi} 87899475Sluigi 87998943Sluigi/* 88098943Sluigi * show_ipfw() prints the body of an ipfw rule. 88198943Sluigi * Because the standard rule has at least proto src_ip dst_ip, we use 88298943Sluigi * a helper function to produce these entries if not provided explicitly. 883102087Sluigi * The first argument is the list of fields we have, the second is 884102087Sluigi * the list of fields we want to be printed. 885101978Sluigi * 886102087Sluigi * Special cases if we have provided a MAC header: 887102087Sluigi * + if the rule does not contain IP addresses/ports, do not print them; 888102087Sluigi * + if the rule does not contain an IP proto, print "all" instead of "ip"; 889102087Sluigi * 890102087Sluigi * Once we have 'have_options', IP header fields are printed as options. 89198943Sluigi */ 892101978Sluigi#define HAVE_PROTO 0x0001 893101978Sluigi#define HAVE_SRCIP 0x0002 894101978Sluigi#define HAVE_DSTIP 0x0004 895169139Smaxim#define HAVE_PROTO4 0x0008 896169139Smaxim#define HAVE_PROTO6 0x0010 897102087Sluigi#define HAVE_OPTIONS 0x8000 89898943Sluigi 899101978Sluigi#define HAVE_IP (HAVE_PROTO | HAVE_SRCIP | HAVE_DSTIP) 90098943Sluigistatic void 901187477Sluigishow_prerequisites(int *flags, int want, int cmd __unused) 90298943Sluigi{ 903187764Sluigi if (co.comment_only) 904123495Sluigi return; 905102087Sluigi if ( (*flags & HAVE_IP) == HAVE_IP) 906102087Sluigi *flags |= HAVE_OPTIONS; 907102087Sluigi 908102087Sluigi if ( !(*flags & HAVE_OPTIONS)) { 909187477Sluigi if ( !(*flags & HAVE_PROTO) && (want & HAVE_PROTO)) { 910146894Smlaier if ( (*flags & HAVE_PROTO4)) 911146894Smlaier printf(" ip4"); 912146894Smlaier else if ( (*flags & HAVE_PROTO6)) 913146894Smlaier printf(" ip6"); 914146894Smlaier else 915146894Smlaier printf(" ip"); 916187477Sluigi } 917102087Sluigi if ( !(*flags & HAVE_SRCIP) && (want & HAVE_SRCIP)) 918102087Sluigi printf(" from any"); 919102087Sluigi if ( !(*flags & HAVE_DSTIP) && (want & HAVE_DSTIP)) 920102087Sluigi printf(" to any"); 921102087Sluigi } 92298943Sluigi *flags |= want; 92398943Sluigi} 92498943Sluigi 92598943Sluigistatic void 926112189Smaximshow_ipfw(struct ip_fw *rule, int pcwidth, int bcwidth) 92798943Sluigi{ 928107291Skeramida static int twidth = 0; 92998943Sluigi int l; 930158879Soleg ipfw_insn *cmd, *tagptr = NULL; 931187477Sluigi const char *comment = NULL; /* ptr to comment if we have one */ 93298943Sluigi int proto = 0; /* default */ 93398943Sluigi int flags = 0; /* prerequisites */ 93498943Sluigi ipfw_insn_log *logptr = NULL; /* set if we find an O_LOG */ 935136071Sgreen ipfw_insn_altq *altqptr = NULL; /* set if we find an O_ALTQ */ 93698943Sluigi int or_block = 0; /* we are in an or block */ 937117328Sluigi uint32_t set_disable; 93898943Sluigi 939115793Sticso bcopy(&rule->next_rule, &set_disable, sizeof(set_disable)); 940101628Sluigi 941101628Sluigi if (set_disable & (1 << rule->set)) { /* disabled */ 942187764Sluigi if (!co.show_sets) 943101628Sluigi return; 944101628Sluigi else 945101628Sluigi printf("# DISABLED "); 946101628Sluigi } 94798943Sluigi printf("%05u ", rule->rulenum); 94898943Sluigi 949117469Sluigi if (pcwidth>0 || bcwidth>0) 950115793Sticso printf("%*llu %*llu ", pcwidth, align_uint64(&rule->pcnt), 951115793Sticso bcwidth, align_uint64(&rule->bcnt)); 95298943Sluigi 953187764Sluigi if (co.do_time == 2) 954117472Sluigi printf("%10u ", rule->timestamp); 955187764Sluigi else if (co.do_time == 1) { 956107291Skeramida char timestr[30]; 957107291Skeramida time_t t = (time_t)0; 958107291Skeramida 959107291Skeramida if (twidth == 0) { 960107291Skeramida strcpy(timestr, ctime(&t)); 961107291Skeramida *strchr(timestr, '\n') = '\0'; 962107291Skeramida twidth = strlen(timestr); 963107291Skeramida } 96498943Sluigi if (rule->timestamp) { 965107291Skeramida t = _long_to_time(rule->timestamp); 96698943Sluigi 96798943Sluigi strcpy(timestr, ctime(&t)); 96898943Sluigi *strchr(timestr, '\n') = '\0'; 96998943Sluigi printf("%s ", timestr); 97098943Sluigi } else { 971107291Skeramida printf("%*s", twidth, " "); 97298943Sluigi } 97398943Sluigi } 97498943Sluigi 975187764Sluigi if (co.show_sets) 976101628Sluigi printf("set %d ", rule->set); 977101628Sluigi 97898943Sluigi /* 979107289Sluigi * print the optional "match probability" 980107289Sluigi */ 981107289Sluigi if (rule->cmd_len > 0) { 982107289Sluigi cmd = rule->cmd ; 983107289Sluigi if (cmd->opcode == O_PROB) { 984107289Sluigi ipfw_insn_u32 *p = (ipfw_insn_u32 *)cmd; 985107289Sluigi double d = 1.0 * p->d[0]; 986107289Sluigi 987107289Sluigi d = (d / 0x7fffffff); 988107289Sluigi printf("prob %f ", d); 989107289Sluigi } 990107289Sluigi } 991107289Sluigi 992107289Sluigi /* 99398943Sluigi * first print actions 99498943Sluigi */ 99598943Sluigi for (l = rule->cmd_len - rule->act_ofs, cmd = ACTION_PTR(rule); 99698943Sluigi l > 0 ; l -= F_LEN(cmd), cmd += F_LEN(cmd)) { 99798943Sluigi switch(cmd->opcode) { 99898943Sluigi case O_CHECK_STATE: 99998943Sluigi printf("check-state"); 1000102087Sluigi flags = HAVE_IP; /* avoid printing anything else */ 100198943Sluigi break; 100298943Sluigi 100398943Sluigi case O_ACCEPT: 100498943Sluigi printf("allow"); 100598943Sluigi break; 100698943Sluigi 100798943Sluigi case O_COUNT: 100898943Sluigi printf("count"); 100998943Sluigi break; 101098943Sluigi 101198943Sluigi case O_DENY: 101298943Sluigi printf("deny"); 101398943Sluigi break; 101498943Sluigi 101599475Sluigi case O_REJECT: 101699475Sluigi if (cmd->arg1 == ICMP_REJECT_RST) 101799475Sluigi printf("reset"); 101899475Sluigi else if (cmd->arg1 == ICMP_UNREACH_HOST) 101999475Sluigi printf("reject"); 102099475Sluigi else 102199475Sluigi print_reject_code(cmd->arg1); 102299475Sluigi break; 102399475Sluigi 1024149020Sbz case O_UNREACH6: 1025149020Sbz if (cmd->arg1 == ICMP6_UNREACH_RST) 1026149020Sbz printf("reset6"); 1027149020Sbz else 1028149020Sbz print_unreach6_code(cmd->arg1); 1029149020Sbz break; 1030149020Sbz 1031159636Soleg case O_SKIPTO: 1032159636Soleg PRINT_UINT_ARG("skipto ", cmd->arg1); 103398943Sluigi break; 103498943Sluigi 103598943Sluigi case O_PIPE: 1036159636Soleg PRINT_UINT_ARG("pipe ", cmd->arg1); 1037159636Soleg break; 1038159636Soleg 103998943Sluigi case O_QUEUE: 1040159636Soleg PRINT_UINT_ARG("queue ", cmd->arg1); 1041159636Soleg break; 1042159636Soleg 104398943Sluigi case O_DIVERT: 1044159636Soleg PRINT_UINT_ARG("divert ", cmd->arg1); 1045159636Soleg break; 1046159636Soleg 104798943Sluigi case O_TEE: 1048159636Soleg PRINT_UINT_ARG("tee ", cmd->arg1); 1049159636Soleg break; 1050159636Soleg 1051141351Sglebius case O_NETGRAPH: 1052159636Soleg PRINT_UINT_ARG("netgraph ", cmd->arg1); 1053159636Soleg break; 1054159636Soleg 1055141351Sglebius case O_NGTEE: 1056159636Soleg PRINT_UINT_ARG("ngtee ", cmd->arg1); 1057159636Soleg break; 1058141351Sglebius 105998943Sluigi case O_FORWARD_IP: 106098943Sluigi { 106198943Sluigi ipfw_insn_sa *s = (ipfw_insn_sa *)cmd; 106298943Sluigi 1063161424Sjulian if (s->sa.sin_addr.s_addr == INADDR_ANY) { 1064161424Sjulian printf("fwd tablearg"); 1065161424Sjulian } else { 1066161424Sjulian printf("fwd %s", inet_ntoa(s->sa.sin_addr)); 1067161424Sjulian } 106898943Sluigi if (s->sa.sin_port) 1069103241Sluigi printf(",%d", s->sa.sin_port); 107098943Sluigi } 107198943Sluigi break; 107298943Sluigi 107398943Sluigi case O_LOG: /* O_LOG is printed last */ 107498943Sluigi logptr = (ipfw_insn_log *)cmd; 107598943Sluigi break; 107698943Sluigi 1077136071Sgreen case O_ALTQ: /* O_ALTQ is printed after O_LOG */ 1078136071Sgreen altqptr = (ipfw_insn_altq *)cmd; 1079136071Sgreen break; 1080136071Sgreen 1081158879Soleg case O_TAG: 1082158879Soleg tagptr = cmd; 1083158879Soleg break; 1084158879Soleg 1085165648Spiso case O_NAT: 1086176517Spiso PRINT_UINT_ARG("nat ", cmd->arg1); 1087165648Spiso break; 1088165648Spiso 1089178888Sjulian case O_SETFIB: 1090178888Sjulian PRINT_UINT_ARG("setfib ", cmd->arg1); 1091178888Sjulian break; 1092178888Sjulian 109398943Sluigi default: 1094136071Sgreen printf("** unrecognized action %d len %d ", 109598943Sluigi cmd->opcode, cmd->len); 109698943Sluigi } 109798943Sluigi } 109898943Sluigi if (logptr) { 109998943Sluigi if (logptr->max_log > 0) 110099909Sluigi printf(" log logamount %d", logptr->max_log); 110198943Sluigi else 110299909Sluigi printf(" log"); 110398943Sluigi } 1104136071Sgreen if (altqptr) { 1105187983Sluigi print_altq_cmd(altqptr); 1106136071Sgreen } 1107158879Soleg if (tagptr) { 1108158879Soleg if (tagptr->len & F_NOT) 1109159636Soleg PRINT_UINT_ARG(" untag ", tagptr->arg1); 1110158879Soleg else 1111159636Soleg PRINT_UINT_ARG(" tag ", tagptr->arg1); 1112158879Soleg } 1113136071Sgreen 111498943Sluigi /* 1115102087Sluigi * then print the body. 111698943Sluigi */ 1117146894Smlaier for (l = rule->act_ofs, cmd = rule->cmd ; 1118146894Smlaier l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 1119146894Smlaier if ((cmd->len & F_OR) || (cmd->len & F_NOT)) 1120146894Smlaier continue; 1121146894Smlaier if (cmd->opcode == O_IP4) { 1122146894Smlaier flags |= HAVE_PROTO4; 1123146894Smlaier break; 1124146894Smlaier } else if (cmd->opcode == O_IP6) { 1125146894Smlaier flags |= HAVE_PROTO6; 1126146894Smlaier break; 1127146894Smlaier } 1128146894Smlaier } 1129102087Sluigi if (rule->_pad & 1) { /* empty rules before options */ 1130187764Sluigi if (!co.do_compact) { 1131146894Smlaier show_prerequisites(&flags, HAVE_PROTO, 0); 1132146894Smlaier printf(" from any to any"); 1133146894Smlaier } 1134102087Sluigi flags |= HAVE_IP | HAVE_OPTIONS; 1135102087Sluigi } 1136102087Sluigi 1137187764Sluigi if (co.comment_only) 1138123495Sluigi comment = "..."; 1139123495Sluigi 114098943Sluigi for (l = rule->act_ofs, cmd = rule->cmd ; 114198943Sluigi l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 114299475Sluigi /* useful alias */ 114399475Sluigi ipfw_insn_u32 *cmd32 = (ipfw_insn_u32 *)cmd; 114498943Sluigi 1145187764Sluigi if (co.comment_only) { 1146123495Sluigi if (cmd->opcode != O_NOP) 1147123495Sluigi continue; 1148123495Sluigi printf(" // %s\n", (char *)(cmd + 1)); 1149123495Sluigi return; 1150123495Sluigi } 1151123495Sluigi 1152102087Sluigi show_prerequisites(&flags, 0, cmd->opcode); 1153102087Sluigi 115498943Sluigi switch(cmd->opcode) { 1155117577Sluigi case O_PROB: 1156107289Sluigi break; /* done already */ 1157107289Sluigi 115898943Sluigi case O_PROBE_STATE: 115998943Sluigi break; /* no need to print anything here */ 116098943Sluigi 116198943Sluigi case O_IP_SRC: 1162130281Sru case O_IP_SRC_LOOKUP: 116398943Sluigi case O_IP_SRC_MASK: 116498943Sluigi case O_IP_SRC_ME: 116598943Sluigi case O_IP_SRC_SET: 1166102087Sluigi show_prerequisites(&flags, HAVE_PROTO, 0); 116798943Sluigi if (!(flags & HAVE_SRCIP)) 116898943Sluigi printf(" from"); 116998943Sluigi if ((cmd->len & F_OR) && !or_block) 117098943Sluigi printf(" {"); 1171102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1172102087Sluigi (flags & HAVE_OPTIONS) ? " src-ip" : ""); 117398943Sluigi flags |= HAVE_SRCIP; 117498943Sluigi break; 117598943Sluigi 117698943Sluigi case O_IP_DST: 1177130281Sru case O_IP_DST_LOOKUP: 117898943Sluigi case O_IP_DST_MASK: 117998943Sluigi case O_IP_DST_ME: 118098943Sluigi case O_IP_DST_SET: 1181102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 118298943Sluigi if (!(flags & HAVE_DSTIP)) 118398943Sluigi printf(" to"); 118498943Sluigi if ((cmd->len & F_OR) && !or_block) 118598943Sluigi printf(" {"); 1186102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1187102087Sluigi (flags & HAVE_OPTIONS) ? " dst-ip" : ""); 118898943Sluigi flags |= HAVE_DSTIP; 118998943Sluigi break; 119098943Sluigi 1191145246Sbrooks case O_IP6_SRC: 1192145246Sbrooks case O_IP6_SRC_MASK: 1193145246Sbrooks case O_IP6_SRC_ME: 1194147105Smlaier show_prerequisites(&flags, HAVE_PROTO, 0); 1195145246Sbrooks if (!(flags & HAVE_SRCIP)) 1196145246Sbrooks printf(" from"); 1197145246Sbrooks if ((cmd->len & F_OR) && !or_block) 1198145246Sbrooks printf(" {"); 1199145246Sbrooks print_ip6((ipfw_insn_ip6 *)cmd, 1200145246Sbrooks (flags & HAVE_OPTIONS) ? " src-ip6" : ""); 1201145246Sbrooks flags |= HAVE_SRCIP | HAVE_PROTO; 1202145246Sbrooks break; 1203145246Sbrooks 1204145246Sbrooks case O_IP6_DST: 1205145246Sbrooks case O_IP6_DST_MASK: 1206145246Sbrooks case O_IP6_DST_ME: 1207145246Sbrooks show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 1208145246Sbrooks if (!(flags & HAVE_DSTIP)) 1209145246Sbrooks printf(" to"); 1210145246Sbrooks if ((cmd->len & F_OR) && !or_block) 1211145246Sbrooks printf(" {"); 1212145246Sbrooks print_ip6((ipfw_insn_ip6 *)cmd, 1213145246Sbrooks (flags & HAVE_OPTIONS) ? " dst-ip6" : ""); 1214145246Sbrooks flags |= HAVE_DSTIP; 1215145246Sbrooks break; 1216145246Sbrooks 1217145246Sbrooks case O_FLOW6ID: 1218145246Sbrooks print_flow6id( (ipfw_insn_u32 *) cmd ); 1219145246Sbrooks flags |= HAVE_OPTIONS; 1220145246Sbrooks break; 1221145246Sbrooks 122298943Sluigi case O_IP_DSTPORT: 1223102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 122498943Sluigi case O_IP_SRCPORT: 1225102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 1226101641Sluigi if ((cmd->len & F_OR) && !or_block) 1227101641Sluigi printf(" {"); 1228172306Smaxim if (cmd->len & F_NOT) 1229172306Smaxim printf(" not"); 1230102087Sluigi print_newports((ipfw_insn_u16 *)cmd, proto, 1231102087Sluigi (flags & HAVE_OPTIONS) ? cmd->opcode : 0); 123298943Sluigi break; 123398943Sluigi 123498943Sluigi case O_PROTO: { 1235145246Sbrooks struct protoent *pe = NULL; 123698943Sluigi 123798943Sluigi if ((cmd->len & F_OR) && !or_block) 123898943Sluigi printf(" {"); 123998943Sluigi if (cmd->len & F_NOT) 124098943Sluigi printf(" not"); 124198943Sluigi proto = cmd->arg1; 1242145567Sbrooks pe = getprotobynumber(cmd->arg1); 1243146894Smlaier if ((flags & (HAVE_PROTO4 | HAVE_PROTO6)) && 1244146894Smlaier !(flags & HAVE_PROTO)) 1245146894Smlaier show_prerequisites(&flags, 1246146894Smlaier HAVE_IP | HAVE_OPTIONS, 0); 1247102087Sluigi if (flags & HAVE_OPTIONS) 1248102087Sluigi printf(" proto"); 124998943Sluigi if (pe) 125098943Sluigi printf(" %s", pe->p_name); 125198943Sluigi else 125298943Sluigi printf(" %u", cmd->arg1); 125398943Sluigi } 125498943Sluigi flags |= HAVE_PROTO; 125598943Sluigi break; 1256106505Smaxim 125798943Sluigi default: /*options ... */ 1258146894Smlaier if (!(cmd->len & (F_OR|F_NOT))) 1259146894Smlaier if (((cmd->opcode == O_IP6) && 1260146894Smlaier (flags & HAVE_PROTO6)) || 1261146894Smlaier ((cmd->opcode == O_IP4) && 1262146894Smlaier (flags & HAVE_PROTO4))) 1263146894Smlaier break; 1264102087Sluigi show_prerequisites(&flags, HAVE_IP | HAVE_OPTIONS, 0); 126598943Sluigi if ((cmd->len & F_OR) && !or_block) 126698943Sluigi printf(" {"); 126798943Sluigi if (cmd->len & F_NOT && cmd->opcode != O_IN) 126898943Sluigi printf(" not"); 126998943Sluigi switch(cmd->opcode) { 1270169139Smaxim case O_MACADDR2: { 1271169139Smaxim ipfw_insn_mac *m = (ipfw_insn_mac *)cmd; 1272169139Smaxim 1273169139Smaxim printf(" MAC"); 1274169139Smaxim print_mac(m->addr, m->mask); 1275169139Smaxim print_mac(m->addr + 6, m->mask + 6); 1276169139Smaxim } 1277169139Smaxim break; 1278169139Smaxim 1279169139Smaxim case O_MAC_TYPE: 1280169139Smaxim print_newports((ipfw_insn_u16 *)cmd, 1281169139Smaxim IPPROTO_ETHERTYPE, cmd->opcode); 1282169139Smaxim break; 1283169139Smaxim 1284169139Smaxim 128598943Sluigi case O_FRAG: 128698943Sluigi printf(" frag"); 128798943Sluigi break; 128898943Sluigi 1289178888Sjulian case O_FIB: 1290178888Sjulian printf(" fib %u", cmd->arg1 ); 1291178888Sjulian break; 1292178888Sjulian 129398943Sluigi case O_IN: 129498943Sluigi printf(cmd->len & F_NOT ? " out" : " in"); 129598943Sluigi break; 129698943Sluigi 1297136073Sgreen case O_DIVERTED: 1298136073Sgreen switch (cmd->arg1) { 1299136073Sgreen case 3: 1300136073Sgreen printf(" diverted"); 1301136073Sgreen break; 1302136073Sgreen case 1: 1303136073Sgreen printf(" diverted-loopback"); 1304136073Sgreen break; 1305136073Sgreen case 2: 1306136073Sgreen printf(" diverted-output"); 1307136073Sgreen break; 1308136073Sgreen default: 1309136073Sgreen printf(" diverted-?<%u>", cmd->arg1); 1310136073Sgreen break; 1311136073Sgreen } 1312136073Sgreen break; 1313136073Sgreen 131498943Sluigi case O_LAYER2: 131598943Sluigi printf(" layer2"); 131698943Sluigi break; 131798943Sluigi case O_XMIT: 131898943Sluigi case O_RECV: 1319140423Sglebius case O_VIA: 1320140423Sglebius { 1321117469Sluigi char const *s; 132298943Sluigi ipfw_insn_if *cmdif = (ipfw_insn_if *)cmd; 132398943Sluigi 132498943Sluigi if (cmd->opcode == O_XMIT) 132598943Sluigi s = "xmit"; 132698943Sluigi else if (cmd->opcode == O_RECV) 132798943Sluigi s = "recv"; 1328117469Sluigi else /* if (cmd->opcode == O_VIA) */ 132998943Sluigi s = "via"; 133098943Sluigi if (cmdif->name[0] == '\0') 133199475Sluigi printf(" %s %s", s, 133299475Sluigi inet_ntoa(cmdif->p.ip)); 1333140423Sglebius else 1334140423Sglebius printf(" %s %s", s, cmdif->name); 1335140423Sglebius 133698943Sluigi break; 1337140423Sglebius } 133898943Sluigi case O_IPID: 1339116690Sluigi if (F_LEN(cmd) == 1) 1340116690Sluigi printf(" ipid %u", cmd->arg1 ); 1341116690Sluigi else 1342116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1343116690Sluigi O_IPID); 134498943Sluigi break; 134598943Sluigi 134698943Sluigi case O_IPTTL: 1347116690Sluigi if (F_LEN(cmd) == 1) 1348116690Sluigi printf(" ipttl %u", cmd->arg1 ); 1349116690Sluigi else 1350116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1351116690Sluigi O_IPTTL); 135298943Sluigi break; 135398943Sluigi 135498943Sluigi case O_IPVER: 135598943Sluigi printf(" ipver %u", cmd->arg1 ); 135698943Sluigi break; 135798943Sluigi 135899475Sluigi case O_IPPRECEDENCE: 135999475Sluigi printf(" ipprecedence %u", (cmd->arg1) >> 5 ); 136099475Sluigi break; 136199475Sluigi 136298943Sluigi case O_IPLEN: 1363116690Sluigi if (F_LEN(cmd) == 1) 1364116690Sluigi printf(" iplen %u", cmd->arg1 ); 1365116690Sluigi else 1366116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1367116690Sluigi O_IPLEN); 136898943Sluigi break; 136998943Sluigi 1370101116Sluigi case O_IPOPT: 137198943Sluigi print_flags("ipoptions", cmd, f_ipopts); 137298943Sluigi break; 137398943Sluigi 137499475Sluigi case O_IPTOS: 137599475Sluigi print_flags("iptos", cmd, f_iptos); 137699475Sluigi break; 137799475Sluigi 137899475Sluigi case O_ICMPTYPE: 137999475Sluigi print_icmptypes((ipfw_insn_u32 *)cmd); 138099475Sluigi break; 138199475Sluigi 138298943Sluigi case O_ESTAB: 138398943Sluigi printf(" established"); 138498943Sluigi break; 138598943Sluigi 1386136075Sgreen case O_TCPDATALEN: 1387136075Sgreen if (F_LEN(cmd) == 1) 1388136075Sgreen printf(" tcpdatalen %u", cmd->arg1 ); 1389136075Sgreen else 1390136075Sgreen print_newports((ipfw_insn_u16 *)cmd, 0, 1391136075Sgreen O_TCPDATALEN); 1392136075Sgreen break; 1393136075Sgreen 139498943Sluigi case O_TCPFLAGS: 139598943Sluigi print_flags("tcpflags", cmd, f_tcpflags); 139698943Sluigi break; 139798943Sluigi 139898943Sluigi case O_TCPOPTS: 139998943Sluigi print_flags("tcpoptions", cmd, f_tcpopts); 140098943Sluigi break; 140198943Sluigi 140298943Sluigi case O_TCPWIN: 140398943Sluigi printf(" tcpwin %d", ntohs(cmd->arg1)); 140498943Sluigi break; 140598943Sluigi 140698943Sluigi case O_TCPACK: 140798943Sluigi printf(" tcpack %d", ntohl(cmd32->d[0])); 140898943Sluigi break; 140998943Sluigi 141098943Sluigi case O_TCPSEQ: 141198943Sluigi printf(" tcpseq %d", ntohl(cmd32->d[0])); 141298943Sluigi break; 141398943Sluigi 141498943Sluigi case O_UID: 141598943Sluigi { 141698943Sluigi struct passwd *pwd = getpwuid(cmd32->d[0]); 141798943Sluigi 141898943Sluigi if (pwd) 141998943Sluigi printf(" uid %s", pwd->pw_name); 142098943Sluigi else 142198943Sluigi printf(" uid %u", cmd32->d[0]); 142298943Sluigi } 142398943Sluigi break; 142498943Sluigi 142598943Sluigi case O_GID: 142698943Sluigi { 142798943Sluigi struct group *grp = getgrgid(cmd32->d[0]); 142898943Sluigi 142998943Sluigi if (grp) 143098943Sluigi printf(" gid %s", grp->gr_name); 143198943Sluigi else 143298943Sluigi printf(" gid %u", cmd32->d[0]); 143398943Sluigi } 143498943Sluigi break; 143598943Sluigi 1436133600Scsjp case O_JAIL: 1437133600Scsjp printf(" jail %d", cmd32->d[0]); 1438133600Scsjp break; 1439133600Scsjp 1440112250Scjc case O_VERREVPATH: 1441112250Scjc printf(" verrevpath"); 1442112250Scjc break; 1443116919Sluigi 1444128575Sandre case O_VERSRCREACH: 1445128575Sandre printf(" versrcreach"); 1446128575Sandre break; 1447128575Sandre 1448133387Sandre case O_ANTISPOOF: 1449133387Sandre printf(" antispoof"); 1450133387Sandre break; 1451133387Sandre 1452117241Sluigi case O_IPSEC: 1453117241Sluigi printf(" ipsec"); 1454117241Sluigi break; 1455117241Sluigi 1456117469Sluigi case O_NOP: 1457117626Sluigi comment = (char *)(cmd + 1); 1458117469Sluigi break; 1459117469Sluigi 146098943Sluigi case O_KEEP_STATE: 146198943Sluigi printf(" keep-state"); 146298943Sluigi break; 146398943Sluigi 1464159636Soleg case O_LIMIT: { 146598943Sluigi struct _s_x *p = limit_masks; 146698943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 1467117328Sluigi uint8_t x = c->limit_mask; 1468117469Sluigi char const *comma = " "; 146998943Sluigi 147098943Sluigi printf(" limit"); 1471117577Sluigi for (; p->x != 0 ; p++) 147299909Sluigi if ((x & p->x) == p->x) { 147398943Sluigi x &= ~p->x; 147498943Sluigi printf("%s%s", comma, p->s); 147598943Sluigi comma = ","; 147698943Sluigi } 1477159636Soleg PRINT_UINT_ARG(" ", c->conn_limit); 147898943Sluigi break; 1479159636Soleg } 148098943Sluigi 1481146894Smlaier case O_IP6: 1482152923Sume printf(" ip6"); 1483145246Sbrooks break; 1484145246Sbrooks 1485146894Smlaier case O_IP4: 1486152923Sume printf(" ip4"); 1487146894Smlaier break; 1488146894Smlaier 1489145246Sbrooks case O_ICMP6TYPE: 1490145246Sbrooks print_icmp6types((ipfw_insn_u32 *)cmd); 1491145246Sbrooks break; 1492145246Sbrooks 1493145246Sbrooks case O_EXT_HDR: 1494145246Sbrooks print_ext6hdr( (ipfw_insn *) cmd ); 1495145246Sbrooks break; 1496145246Sbrooks 1497158879Soleg case O_TAGGED: 1498158879Soleg if (F_LEN(cmd) == 1) 1499159636Soleg PRINT_UINT_ARG(" tagged ", cmd->arg1); 1500158879Soleg else 1501159636Soleg print_newports((ipfw_insn_u16 *)cmd, 0, 1502159636Soleg O_TAGGED); 1503158879Soleg break; 1504158879Soleg 150598943Sluigi default: 150698943Sluigi printf(" [opcode %d len %d]", 150798943Sluigi cmd->opcode, cmd->len); 150898943Sluigi } 150998943Sluigi } 151098943Sluigi if (cmd->len & F_OR) { 151198943Sluigi printf(" or"); 151298943Sluigi or_block = 1; 151398943Sluigi } else if (or_block) { 151498943Sluigi printf(" }"); 151598943Sluigi or_block = 0; 151698943Sluigi } 151798943Sluigi } 1518102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 1519117626Sluigi if (comment) 1520117626Sluigi printf(" // %s", comment); 152198943Sluigi printf("\n"); 152298943Sluigi} 152398943Sluigi 152498943Sluigistatic void 1525112189Smaximshow_dyn_ipfw(ipfw_dyn_rule *d, int pcwidth, int bcwidth) 152698943Sluigi{ 152798943Sluigi struct protoent *pe; 152898943Sluigi struct in_addr a; 1529115793Sticso uint16_t rulenum; 1530159160Smlaier char buf[INET6_ADDRSTRLEN]; 153198943Sluigi 1532187764Sluigi if (!co.do_expired) { 153398943Sluigi if (!d->expire && !(d->dyn_type == O_LIMIT_PARENT)) 153498943Sluigi return; 153598943Sluigi } 1536115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 1537117328Sluigi printf("%05d", rulenum); 1538117469Sluigi if (pcwidth>0 || bcwidth>0) 1539117328Sluigi printf(" %*llu %*llu (%ds)", pcwidth, 1540117328Sluigi align_uint64(&d->pcnt), bcwidth, 1541117328Sluigi align_uint64(&d->bcnt), d->expire); 154298943Sluigi switch (d->dyn_type) { 154398943Sluigi case O_LIMIT_PARENT: 154498943Sluigi printf(" PARENT %d", d->count); 154598943Sluigi break; 154698943Sluigi case O_LIMIT: 154798943Sluigi printf(" LIMIT"); 154898943Sluigi break; 154998943Sluigi case O_KEEP_STATE: /* bidir, no mask */ 1550106505Smaxim printf(" STATE"); 155198943Sluigi break; 155298943Sluigi } 155398943Sluigi 155498943Sluigi if ((pe = getprotobynumber(d->id.proto)) != NULL) 155598943Sluigi printf(" %s", pe->p_name); 155698943Sluigi else 155798943Sluigi printf(" proto %u", d->id.proto); 155898943Sluigi 1559159160Smlaier if (d->id.addr_type == 4) { 1560159160Smlaier a.s_addr = htonl(d->id.src_ip); 1561159160Smlaier printf(" %s %d", inet_ntoa(a), d->id.src_port); 156298943Sluigi 1563159160Smlaier a.s_addr = htonl(d->id.dst_ip); 1564159160Smlaier printf(" <-> %s %d", inet_ntoa(a), d->id.dst_port); 1565159160Smlaier } else if (d->id.addr_type == 6) { 1566159160Smlaier printf(" %s %d", inet_ntop(AF_INET6, &d->id.src_ip6, buf, 1567159160Smlaier sizeof(buf)), d->id.src_port); 1568159160Smlaier printf(" <-> %s %d", inet_ntop(AF_INET6, &d->id.dst_ip6, buf, 1569159160Smlaier sizeof(buf)), d->id.dst_port); 1570159160Smlaier } else 1571159160Smlaier printf(" UNKNOWN <-> UNKNOWN\n"); 1572159160Smlaier 157398943Sluigi printf("\n"); 157498943Sluigi} 157598943Sluigi 1576101978Sluigi/* 1577101978Sluigi * This one handles all set-related commands 1578101978Sluigi * ipfw set { show | enable | disable } 1579101978Sluigi * ipfw set swap X Y 1580101978Sluigi * ipfw set move X to Y 1581101978Sluigi * ipfw set move rule X to Y 1582101978Sluigi */ 1583187767Sluigivoid 1584187767Sluigiipfw_sets_handler(int ac, char *av[]) 1585101978Sluigi{ 1586117328Sluigi uint32_t set_disable, masks[2]; 1587101978Sluigi int i, nbytes; 1588117328Sluigi uint16_t rulenum; 1589117328Sluigi uint8_t cmd, new_set; 1590101978Sluigi 1591101978Sluigi ac--; 1592101978Sluigi av++; 1593101978Sluigi 1594101978Sluigi if (!ac) 1595101978Sluigi errx(EX_USAGE, "set needs command"); 1596140271Sbrooks if (_substrcmp(*av, "show") == 0) { 1597101978Sluigi void *data; 1598117469Sluigi char const *msg; 1599101978Sluigi 1600101978Sluigi nbytes = sizeof(struct ip_fw); 1601187716Sluigi data = safe_calloc(1, nbytes); 1602119740Stmm if (do_cmd(IP_FW_GET, data, (uintptr_t)&nbytes) < 0) 1603101978Sluigi err(EX_OSERR, "getsockopt(IP_FW_GET)"); 1604115793Sticso bcopy(&((struct ip_fw *)data)->next_rule, 1605115793Sticso &set_disable, sizeof(set_disable)); 1606101978Sluigi 1607117655Sluigi for (i = 0, msg = "disable" ; i < RESVD_SET; i++) 1608117577Sluigi if ((set_disable & (1<<i))) { 1609101978Sluigi printf("%s %d", msg, i); 1610101978Sluigi msg = ""; 1611101978Sluigi } 1612101978Sluigi msg = (set_disable) ? " enable" : "enable"; 1613117655Sluigi for (i = 0; i < RESVD_SET; i++) 1614117577Sluigi if (!(set_disable & (1<<i))) { 1615101978Sluigi printf("%s %d", msg, i); 1616101978Sluigi msg = ""; 1617101978Sluigi } 1618101978Sluigi printf("\n"); 1619140271Sbrooks } else if (_substrcmp(*av, "swap") == 0) { 1620101978Sluigi ac--; av++; 1621101978Sluigi if (ac != 2) 1622101978Sluigi errx(EX_USAGE, "set swap needs 2 set numbers\n"); 1623101978Sluigi rulenum = atoi(av[0]); 1624101978Sluigi new_set = atoi(av[1]); 1625117655Sluigi if (!isdigit(*(av[0])) || rulenum > RESVD_SET) 1626101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[0]); 1627117655Sluigi if (!isdigit(*(av[1])) || new_set > RESVD_SET) 1628101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[1]); 1629101978Sluigi masks[0] = (4 << 24) | (new_set << 16) | (rulenum); 1630117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(uint32_t)); 1631140271Sbrooks } else if (_substrcmp(*av, "move") == 0) { 1632101978Sluigi ac--; av++; 1633140271Sbrooks if (ac && _substrcmp(*av, "rule") == 0) { 1634101978Sluigi cmd = 2; 1635101978Sluigi ac--; av++; 1636101978Sluigi } else 1637101978Sluigi cmd = 3; 1638140271Sbrooks if (ac != 3 || _substrcmp(av[1], "to") != 0) 1639101978Sluigi errx(EX_USAGE, "syntax: set move [rule] X to Y\n"); 1640101978Sluigi rulenum = atoi(av[0]); 1641101978Sluigi new_set = atoi(av[2]); 1642117655Sluigi if (!isdigit(*(av[0])) || (cmd == 3 && rulenum > RESVD_SET) || 1643182823Srik (cmd == 2 && rulenum == IPFW_DEFAULT_RULE) ) 1644101978Sluigi errx(EX_DATAERR, "invalid source number %s\n", av[0]); 1645117655Sluigi if (!isdigit(*(av[2])) || new_set > RESVD_SET) 1646101978Sluigi errx(EX_DATAERR, "invalid dest. set %s\n", av[1]); 1647101978Sluigi masks[0] = (cmd << 24) | (new_set << 16) | (rulenum); 1648117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(uint32_t)); 1649140271Sbrooks } else if (_substrcmp(*av, "disable") == 0 || 1650140271Sbrooks _substrcmp(*av, "enable") == 0 ) { 1651140271Sbrooks int which = _substrcmp(*av, "enable") == 0 ? 1 : 0; 1652101978Sluigi 1653101978Sluigi ac--; av++; 1654101978Sluigi masks[0] = masks[1] = 0; 1655101978Sluigi 1656101978Sluigi while (ac) { 1657101978Sluigi if (isdigit(**av)) { 1658101978Sluigi i = atoi(*av); 1659117655Sluigi if (i < 0 || i > RESVD_SET) 1660101978Sluigi errx(EX_DATAERR, 1661101978Sluigi "invalid set number %d\n", i); 1662101978Sluigi masks[which] |= (1<<i); 1663140271Sbrooks } else if (_substrcmp(*av, "disable") == 0) 1664101978Sluigi which = 0; 1665140271Sbrooks else if (_substrcmp(*av, "enable") == 0) 1666101978Sluigi which = 1; 1667101978Sluigi else 1668101978Sluigi errx(EX_DATAERR, 1669101978Sluigi "invalid set command %s\n", *av); 1670101978Sluigi av++; ac--; 1671101978Sluigi } 1672101978Sluigi if ( (masks[0] & masks[1]) != 0 ) 1673101978Sluigi errx(EX_DATAERR, 1674101978Sluigi "cannot enable and disable the same set\n"); 1675101978Sluigi 1676117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(masks)); 1677101978Sluigi if (i) 1678101978Sluigi warn("set enable/disable: setsockopt(IP_FW_DEL)"); 1679101978Sluigi } else 1680101978Sluigi errx(EX_USAGE, "invalid set command %s\n", *av); 1681101978Sluigi} 1682101978Sluigi 1683187767Sluigivoid 1684187767Sluigiipfw_sysctl_handler(int ac, char *av[], int which) 1685109126Sdillon{ 1686109126Sdillon ac--; 1687109126Sdillon av++; 1688109126Sdillon 1689119668Smaxim if (ac == 0) { 1690109126Sdillon warnx("missing keyword to enable/disable\n"); 1691140271Sbrooks } else if (_substrcmp(*av, "firewall") == 0) { 1692116770Sluigi sysctlbyname("net.inet.ip.fw.enable", NULL, 0, 1693116770Sluigi &which, sizeof(which)); 1694140271Sbrooks } else if (_substrcmp(*av, "one_pass") == 0) { 1695116770Sluigi sysctlbyname("net.inet.ip.fw.one_pass", NULL, 0, 1696116770Sluigi &which, sizeof(which)); 1697140271Sbrooks } else if (_substrcmp(*av, "debug") == 0) { 1698116770Sluigi sysctlbyname("net.inet.ip.fw.debug", NULL, 0, 1699116770Sluigi &which, sizeof(which)); 1700140271Sbrooks } else if (_substrcmp(*av, "verbose") == 0) { 1701116770Sluigi sysctlbyname("net.inet.ip.fw.verbose", NULL, 0, 1702116770Sluigi &which, sizeof(which)); 1703140271Sbrooks } else if (_substrcmp(*av, "dyn_keepalive") == 0) { 1704116770Sluigi sysctlbyname("net.inet.ip.fw.dyn_keepalive", NULL, 0, 1705116770Sluigi &which, sizeof(which)); 1706140271Sbrooks } else if (_substrcmp(*av, "altq") == 0) { 1707136071Sgreen altq_set_enabled(which); 1708109126Sdillon } else { 1709109126Sdillon warnx("unrecognize enable/disable keyword: %s\n", *av); 1710109126Sdillon } 1711109126Sdillon} 1712109126Sdillon 1713187767Sluigivoid 1714187767Sluigiipfw_list(int ac, char *av[], int show_counters) 171598943Sluigi{ 171698943Sluigi struct ip_fw *r; 171798943Sluigi ipfw_dyn_rule *dynrules, *d; 171898943Sluigi 1719117469Sluigi#define NEXT(r) ((struct ip_fw *)((char *)r + RULESIZE(r))) 1720117469Sluigi char *lim; 1721117469Sluigi void *data = NULL; 1722112189Smaxim int bcwidth, n, nbytes, nstat, ndyn, pcwidth, width; 172398943Sluigi int exitval = EX_OK; 172498943Sluigi int lac; 172598943Sluigi char **lav; 1726117469Sluigi u_long rnum, last; 172798943Sluigi char *endptr; 172898943Sluigi int seen = 0; 1729170923Smaxim uint8_t set; 173098943Sluigi 1731187764Sluigi const int ocmd = co.do_pipe ? IP_DUMMYNET_GET : IP_FW_GET; 173298943Sluigi int nalloc = 1024; /* start somewhere... */ 173398943Sluigi 1734135036Smaxim last = 0; 1735135036Smaxim 1736187764Sluigi if (co.test_only) { 1737117328Sluigi fprintf(stderr, "Testing only, list disabled\n"); 1738117328Sluigi return; 1739117328Sluigi } 1740117328Sluigi 174198943Sluigi ac--; 174298943Sluigi av++; 174398943Sluigi 174498943Sluigi /* get rules or pipes from kernel, resizing array as necessary */ 174598943Sluigi nbytes = nalloc; 174698943Sluigi 174798943Sluigi while (nbytes >= nalloc) { 174898943Sluigi nalloc = nalloc * 2 + 200; 174998943Sluigi nbytes = nalloc; 1750187716Sluigi data = safe_realloc(data, nbytes); 1751119740Stmm if (do_cmd(ocmd, data, (uintptr_t)&nbytes) < 0) 175298943Sluigi err(EX_OSERR, "getsockopt(IP_%s_GET)", 1753187764Sluigi co.do_pipe ? "DUMMYNET" : "FW"); 175498943Sluigi } 175598943Sluigi 1756187764Sluigi if (co.do_pipe) { 1757187769Sluigi ipfw_list_pipes(data, nbytes, ac, av); 175898943Sluigi goto done; 175998943Sluigi } 176098943Sluigi 176198943Sluigi /* 176298943Sluigi * Count static rules. They have variable size so we 176398943Sluigi * need to scan the list to count them. 176498943Sluigi */ 1765117469Sluigi for (nstat = 1, r = data, lim = (char *)data + nbytes; 1766182823Srik r->rulenum < IPFW_DEFAULT_RULE && (char *)r < lim; 1767117469Sluigi ++nstat, r = NEXT(r) ) 176898943Sluigi ; /* nothing */ 176998943Sluigi 177098943Sluigi /* 177198943Sluigi * Count dynamic rules. This is easier as they have 177298943Sluigi * fixed size. 177398943Sluigi */ 1774117469Sluigi r = NEXT(r); 177598943Sluigi dynrules = (ipfw_dyn_rule *)r ; 1776117469Sluigi n = (char *)r - (char *)data; 177798943Sluigi ndyn = (nbytes - n) / sizeof *dynrules; 177898943Sluigi 1779112189Smaxim /* if showing stats, figure out column widths ahead of time */ 1780112189Smaxim bcwidth = pcwidth = 0; 1781117469Sluigi if (show_counters) { 1782117469Sluigi for (n = 0, r = data; n < nstat; n++, r = NEXT(r)) { 1783170923Smaxim /* skip rules from another set */ 1784187764Sluigi if (co.use_set && r->set != co.use_set - 1) 1785170923Smaxim continue; 1786170923Smaxim 1787112189Smaxim /* packet counter */ 1788115793Sticso width = snprintf(NULL, 0, "%llu", 1789115793Sticso align_uint64(&r->pcnt)); 1790112189Smaxim if (width > pcwidth) 1791112189Smaxim pcwidth = width; 1792112189Smaxim 1793112189Smaxim /* byte counter */ 1794115793Sticso width = snprintf(NULL, 0, "%llu", 1795115793Sticso align_uint64(&r->bcnt)); 1796112189Smaxim if (width > bcwidth) 1797112189Smaxim bcwidth = width; 1798112189Smaxim } 1799112189Smaxim } 1800187764Sluigi if (co.do_dynamic && ndyn) { 1801112189Smaxim for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1802187764Sluigi if (co.use_set) { 1803170923Smaxim /* skip rules from another set */ 1804171989Smaxim bcopy((char *)&d->rule + sizeof(uint16_t), 1805170923Smaxim &set, sizeof(uint8_t)); 1806187764Sluigi if (set != co.use_set - 1) 1807170923Smaxim continue; 1808170923Smaxim } 1809115793Sticso width = snprintf(NULL, 0, "%llu", 1810115793Sticso align_uint64(&d->pcnt)); 1811112189Smaxim if (width > pcwidth) 1812112189Smaxim pcwidth = width; 1813112189Smaxim 1814115793Sticso width = snprintf(NULL, 0, "%llu", 1815115793Sticso align_uint64(&d->bcnt)); 1816112189Smaxim if (width > bcwidth) 1817112189Smaxim bcwidth = width; 1818112189Smaxim } 1819112189Smaxim } 182098943Sluigi /* if no rule numbers were specified, list all rules */ 182198943Sluigi if (ac == 0) { 1822170923Smaxim for (n = 0, r = data; n < nstat; n++, r = NEXT(r)) { 1823187764Sluigi if (co.use_set && r->set != co.use_set - 1) 1824170923Smaxim continue; 1825112189Smaxim show_ipfw(r, pcwidth, bcwidth); 1826170923Smaxim } 182798943Sluigi 1828187764Sluigi if (co.do_dynamic && ndyn) { 182998943Sluigi printf("## Dynamic rules (%d):\n", ndyn); 1830170923Smaxim for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1831187764Sluigi if (co.use_set) { 1832171989Smaxim bcopy((char *)&d->rule + sizeof(uint16_t), 1833170923Smaxim &set, sizeof(uint8_t)); 1834187764Sluigi if (set != co.use_set - 1) 1835170923Smaxim continue; 1836170923Smaxim } 1837112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 183898943Sluigi } 1839170923Smaxim } 184098943Sluigi goto done; 184198943Sluigi } 184298943Sluigi 184398943Sluigi /* display specific rules requested on command line */ 184498943Sluigi 184598943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 184698943Sluigi /* convert command line rule # */ 1847117469Sluigi last = rnum = strtoul(*lav++, &endptr, 10); 1848117469Sluigi if (*endptr == '-') 1849117469Sluigi last = strtoul(endptr+1, &endptr, 10); 185098943Sluigi if (*endptr) { 185198943Sluigi exitval = EX_USAGE; 185298943Sluigi warnx("invalid rule number: %s", *(lav - 1)); 185398943Sluigi continue; 185498943Sluigi } 1855117469Sluigi for (n = seen = 0, r = data; n < nstat; n++, r = NEXT(r) ) { 1856117469Sluigi if (r->rulenum > last) 185798943Sluigi break; 1858187764Sluigi if (co.use_set && r->set != co.use_set - 1) 1859170923Smaxim continue; 1860117469Sluigi if (r->rulenum >= rnum && r->rulenum <= last) { 1861112189Smaxim show_ipfw(r, pcwidth, bcwidth); 186298943Sluigi seen = 1; 186398943Sluigi } 186498943Sluigi } 186598943Sluigi if (!seen) { 186698943Sluigi /* give precedence to other error(s) */ 186798943Sluigi if (exitval == EX_OK) 186898943Sluigi exitval = EX_UNAVAILABLE; 186998943Sluigi warnx("rule %lu does not exist", rnum); 187098943Sluigi } 187198943Sluigi } 187298943Sluigi 1873187764Sluigi if (co.do_dynamic && ndyn) { 187498943Sluigi printf("## Dynamic rules:\n"); 187598943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 1876145246Sbrooks last = rnum = strtoul(*lav++, &endptr, 10); 1877117469Sluigi if (*endptr == '-') 1878117469Sluigi last = strtoul(endptr+1, &endptr, 10); 187998943Sluigi if (*endptr) 188098943Sluigi /* already warned */ 188198943Sluigi continue; 188298943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1883115793Sticso uint16_t rulenum; 1884115793Sticso 1885115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 1886115793Sticso if (rulenum > rnum) 188798943Sluigi break; 1888187764Sluigi if (co.use_set) { 1889171989Smaxim bcopy((char *)&d->rule + sizeof(uint16_t), 1890170923Smaxim &set, sizeof(uint8_t)); 1891187764Sluigi if (set != co.use_set - 1) 1892170923Smaxim continue; 1893170923Smaxim } 1894117469Sluigi if (r->rulenum >= rnum && r->rulenum <= last) 1895112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 189698943Sluigi } 189798943Sluigi } 189898943Sluigi } 189998943Sluigi 190098943Sluigi ac = 0; 190198943Sluigi 190298943Sluigidone: 190398943Sluigi free(data); 190498943Sluigi 190598943Sluigi if (exitval != EX_OK) 190698943Sluigi exit(exitval); 1907117469Sluigi#undef NEXT 190898943Sluigi} 190998943Sluigi 191098943Sluigistatic int 191198943Sluigilookup_host (char *host, struct in_addr *ipaddr) 191298943Sluigi{ 191398943Sluigi struct hostent *he; 191498943Sluigi 191598943Sluigi if (!inet_aton(host, ipaddr)) { 191698943Sluigi if ((he = gethostbyname(host)) == NULL) 191798943Sluigi return(-1); 191898943Sluigi *ipaddr = *(struct in_addr *)he->h_addr_list[0]; 191998943Sluigi } 192098943Sluigi return(0); 192198943Sluigi} 192298943Sluigi 192398943Sluigi/* 192498943Sluigi * fills the addr and mask fields in the instruction as appropriate from av. 192598943Sluigi * Update length as appropriate. 192698943Sluigi * The following formats are allowed: 192798943Sluigi * me returns O_IP_*_ME 192898943Sluigi * 1.2.3.4 single IP address 192998943Sluigi * 1.2.3.4:5.6.7.8 address:mask 193098943Sluigi * 1.2.3.4/24 address/mask 193198943Sluigi * 1.2.3.4/26{1,6,5,4,23} set of addresses in a subnet 1932117328Sluigi * We can have multiple comma-separated address/mask entries. 193398943Sluigi */ 193498943Sluigistatic void 193598943Sluigifill_ip(ipfw_insn_ip *cmd, char *av) 193698943Sluigi{ 1937117328Sluigi int len = 0; 1938117328Sluigi uint32_t *d = ((ipfw_insn_u32 *)cmd)->d; 193998943Sluigi 194098943Sluigi cmd->o.len &= ~F_LEN_MASK; /* zero len */ 194198943Sluigi 1942140271Sbrooks if (_substrcmp(av, "any") == 0) 194398943Sluigi return; 194498943Sluigi 1945140271Sbrooks if (_substrcmp(av, "me") == 0) { 194698943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn); 194798943Sluigi return; 194898943Sluigi } 194998943Sluigi 1950140271Sbrooks if (strncmp(av, "table(", 6) == 0) { 1951130281Sru char *p = strchr(av + 6, ','); 1952130281Sru 1953130281Sru if (p) 1954130281Sru *p++ = '\0'; 1955130281Sru cmd->o.opcode = O_IP_DST_LOOKUP; 1956130281Sru cmd->o.arg1 = strtoul(av + 6, NULL, 0); 1957130281Sru if (p) { 1958130281Sru cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 1959130281Sru d[0] = strtoul(p, NULL, 0); 1960130281Sru } else 1961130281Sru cmd->o.len |= F_INSN_SIZE(ipfw_insn); 1962130281Sru return; 1963130281Sru } 1964130281Sru 1965117328Sluigi while (av) { 1966117328Sluigi /* 1967117328Sluigi * After the address we can have '/' or ':' indicating a mask, 1968117328Sluigi * ',' indicating another address follows, '{' indicating a 1969117328Sluigi * set of addresses of unspecified size. 1970117328Sluigi */ 1971165851Smlaier char *t = NULL, *p = strpbrk(av, "/:,{"); 1972117328Sluigi int masklen; 1973187477Sluigi char md, nd = '\0'; 1974117328Sluigi 197598943Sluigi if (p) { 197698943Sluigi md = *p; 197798943Sluigi *p++ = '\0'; 1978165851Smlaier if ((t = strpbrk(p, ",{")) != NULL) { 1979165851Smlaier nd = *t; 1980165851Smlaier *t = '\0'; 1981165851Smlaier } 1982117328Sluigi } else 1983117328Sluigi md = '\0'; 198498943Sluigi 1985117328Sluigi if (lookup_host(av, (struct in_addr *)&d[0]) != 0) 198698943Sluigi errx(EX_NOHOST, "hostname ``%s'' unknown", av); 198798943Sluigi switch (md) { 198898943Sluigi case ':': 1989117328Sluigi if (!inet_aton(p, (struct in_addr *)&d[1])) 199098943Sluigi errx(EX_DATAERR, "bad netmask ``%s''", p); 199198943Sluigi break; 199298943Sluigi case '/': 1993117328Sluigi masklen = atoi(p); 1994117328Sluigi if (masklen == 0) 1995117328Sluigi d[1] = htonl(0); /* mask */ 1996117328Sluigi else if (masklen > 32) 199798943Sluigi errx(EX_DATAERR, "bad width ``%s''", p); 199898943Sluigi else 1999117328Sluigi d[1] = htonl(~0 << (32 - masklen)); 200098943Sluigi break; 2001117328Sluigi case '{': /* no mask, assume /24 and put back the '{' */ 2002117328Sluigi d[1] = htonl(~0 << (32 - 24)); 2003117328Sluigi *(--p) = md; 2004117328Sluigi break; 2005117328Sluigi 2006117328Sluigi case ',': /* single address plus continuation */ 2007117328Sluigi *(--p) = md; 2008117328Sluigi /* FALLTHROUGH */ 2009117328Sluigi case 0: /* initialization value */ 201098943Sluigi default: 2011117328Sluigi d[1] = htonl(~0); /* force /32 */ 201298943Sluigi break; 201398943Sluigi } 2014117328Sluigi d[0] &= d[1]; /* mask base address with mask */ 2015165851Smlaier if (t) 2016165851Smlaier *t = nd; 2017117328Sluigi /* find next separator */ 201898943Sluigi if (p) 2019117328Sluigi p = strpbrk(p, ",{"); 2020117328Sluigi if (p && *p == '{') { 2021117328Sluigi /* 2022117328Sluigi * We have a set of addresses. They are stored as follows: 2023117328Sluigi * arg1 is the set size (powers of 2, 2..256) 2024117328Sluigi * addr is the base address IN HOST FORMAT 2025117328Sluigi * mask.. is an array of arg1 bits (rounded up to 2026117328Sluigi * the next multiple of 32) with bits set 2027117328Sluigi * for each host in the map. 2028117328Sluigi */ 2029117328Sluigi uint32_t *map = (uint32_t *)&cmd->mask; 203098943Sluigi int low, high; 2031117577Sluigi int i = contigmask((uint8_t *)&(d[1]), 32); 203298943Sluigi 2033117328Sluigi if (len > 0) 2034117328Sluigi errx(EX_DATAERR, "address set cannot be in a list"); 2035117328Sluigi if (i < 24 || i > 31) 2036117328Sluigi errx(EX_DATAERR, "invalid set with mask %d\n", i); 2037117328Sluigi cmd->o.arg1 = 1<<(32-i); /* map length */ 2038117328Sluigi d[0] = ntohl(d[0]); /* base addr in host format */ 203998943Sluigi cmd->o.opcode = O_IP_DST_SET; /* default */ 204098943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32) + (cmd->o.arg1+31)/32; 2041101117Sluigi for (i = 0; i < (cmd->o.arg1+31)/32 ; i++) 2042117328Sluigi map[i] = 0; /* clear map */ 204398943Sluigi 2044117328Sluigi av = p + 1; 2045117328Sluigi low = d[0] & 0xff; 204698943Sluigi high = low + cmd->o.arg1 - 1; 2047117328Sluigi /* 2048117328Sluigi * Here, i stores the previous value when we specify a range 2049117328Sluigi * of addresses within a mask, e.g. 45-63. i = -1 means we 2050117328Sluigi * have no previous value. 2051117328Sluigi */ 2052116716Sluigi i = -1; /* previous value in a range */ 205398943Sluigi while (isdigit(*av)) { 205498943Sluigi char *s; 2055117328Sluigi int a = strtol(av, &s, 0); 205698943Sluigi 2057117328Sluigi if (s == av) { /* no parameter */ 2058117328Sluigi if (*av != '}') 2059117328Sluigi errx(EX_DATAERR, "set not closed\n"); 2060117328Sluigi if (i != -1) 2061117328Sluigi errx(EX_DATAERR, "incomplete range %d-", i); 2062117328Sluigi break; 2063117328Sluigi } 2064117328Sluigi if (a < low || a > high) 2065117328Sluigi errx(EX_DATAERR, "addr %d out of range [%d-%d]\n", 206698943Sluigi a, low, high); 206798943Sluigi a -= low; 2068116716Sluigi if (i == -1) /* no previous in range */ 2069116716Sluigi i = a; 2070116716Sluigi else { /* check that range is valid */ 2071116716Sluigi if (i > a) 2072116716Sluigi errx(EX_DATAERR, "invalid range %d-%d", 2073116716Sluigi i+low, a+low); 2074116716Sluigi if (*s == '-') 2075116716Sluigi errx(EX_DATAERR, "double '-' in range"); 2076116716Sluigi } 2077116716Sluigi for (; i <= a; i++) 2078117328Sluigi map[i/32] |= 1<<(i & 31); 2079116716Sluigi i = -1; 2080116716Sluigi if (*s == '-') 2081116716Sluigi i = a; 2082117328Sluigi else if (*s == '}') 2083116716Sluigi break; 208498943Sluigi av = s+1; 208598943Sluigi } 208698943Sluigi return; 208798943Sluigi } 2088117328Sluigi av = p; 2089117328Sluigi if (av) /* then *av must be a ',' */ 2090117328Sluigi av++; 209198943Sluigi 2092117328Sluigi /* Check this entry */ 2093117328Sluigi if (d[1] == 0) { /* "any", specified as x.x.x.x/0 */ 2094117328Sluigi /* 2095117328Sluigi * 'any' turns the entire list into a NOP. 2096117328Sluigi * 'not any' never matches, so it is removed from the 2097117328Sluigi * list unless it is the only item, in which case we 2098117328Sluigi * report an error. 2099117328Sluigi */ 2100117328Sluigi if (cmd->o.len & F_NOT) { /* "not any" never matches */ 2101117328Sluigi if (av == NULL && len == 0) /* only this entry */ 2102117328Sluigi errx(EX_DATAERR, "not any never matches"); 2103117328Sluigi } 2104117328Sluigi /* else do nothing and skip this entry */ 2105128067Smaxim return; 2106117328Sluigi } 2107117328Sluigi /* A single IP can be stored in an optimized format */ 2108187762Sluigi if (d[1] == ~0 && av == NULL && len == 0) { 210998943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 2110117328Sluigi return; 2111117328Sluigi } 2112117328Sluigi len += 2; /* two words... */ 2113117328Sluigi d += 2; 2114117328Sluigi } /* end while */ 2115162363Sjhay if (len + 1 > F_LEN_MASK) 2116162363Sjhay errx(EX_DATAERR, "address list too long"); 2117117328Sluigi cmd->o.len |= len+1; 211898943Sluigi} 211998943Sluigi 212098943Sluigi 2121145246Sbrooks/* n2mask sets n bits of the mask */ 2122187769Sluigivoid 2123145246Sbrooksn2mask(struct in6_addr *mask, int n) 2124145246Sbrooks{ 2125145246Sbrooks static int minimask[9] = 2126145246Sbrooks { 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff }; 2127145246Sbrooks u_char *p; 2128145246Sbrooks 2129145246Sbrooks memset(mask, 0, sizeof(struct in6_addr)); 2130145246Sbrooks p = (u_char *) mask; 2131145246Sbrooks for (; n > 0; p++, n -= 8) { 2132145246Sbrooks if (n >= 8) 2133145246Sbrooks *p = 0xff; 2134145246Sbrooks else 2135145246Sbrooks *p = minimask[n]; 2136145246Sbrooks } 2137145246Sbrooks return; 2138145246Sbrooks} 2139145246Sbrooks 2140145246Sbrooks 214198943Sluigi/* 214298943Sluigi * helper function to process a set of flags and set bits in the 214398943Sluigi * appropriate masks. 214498943Sluigi */ 214598943Sluigistatic void 214698943Sluigifill_flags(ipfw_insn *cmd, enum ipfw_opcodes opcode, 214798943Sluigi struct _s_x *flags, char *p) 214898943Sluigi{ 2149117328Sluigi uint8_t set=0, clear=0; 215098943Sluigi 215198943Sluigi while (p && *p) { 215298943Sluigi char *q; /* points to the separator */ 215398943Sluigi int val; 2154117328Sluigi uint8_t *which; /* mask we are working on */ 215598943Sluigi 215698943Sluigi if (*p == '!') { 215798943Sluigi p++; 215898943Sluigi which = &clear; 215998943Sluigi } else 216098943Sluigi which = &set; 216198943Sluigi q = strchr(p, ','); 216298943Sluigi if (q) 216398943Sluigi *q++ = '\0'; 216498943Sluigi val = match_token(flags, p); 216598943Sluigi if (val <= 0) 216698943Sluigi errx(EX_DATAERR, "invalid flag %s", p); 2167117328Sluigi *which |= (uint8_t)val; 216898943Sluigi p = q; 216998943Sluigi } 217098943Sluigi cmd->opcode = opcode; 217198943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | 1; 217298943Sluigi cmd->arg1 = (set & 0xff) | ( (clear & 0xff) << 8); 217398943Sluigi} 217498943Sluigi 217598943Sluigi 2176187767Sluigivoid 2177187767Sluigiipfw_delete(int ac, char *av[]) 217898943Sluigi{ 2179117328Sluigi uint32_t rulenum; 218098943Sluigi int i; 218198943Sluigi int exitval = EX_OK; 2182101628Sluigi int do_set = 0; 218398943Sluigi 218498943Sluigi 218598943Sluigi av++; ac--; 2186130013Scsjp NEED1("missing rule specification"); 2187140271Sbrooks if (ac > 0 && _substrcmp(*av, "set") == 0) { 2188170923Smaxim /* Do not allow using the following syntax: 2189170923Smaxim * ipfw set N delete set M 2190170923Smaxim */ 2191187764Sluigi if (co.use_set) 2192170923Smaxim errx(EX_DATAERR, "invalid syntax"); 2193101978Sluigi do_set = 1; /* delete set */ 2194101628Sluigi ac--; av++; 2195101978Sluigi } 219698943Sluigi 219798943Sluigi /* Rule number */ 219898943Sluigi while (ac && isdigit(**av)) { 219998943Sluigi i = atoi(*av); av++; ac--; 2200187764Sluigi if (co.do_nat) { 2201165648Spiso exitval = do_cmd(IP_FW_NAT_DEL, &i, sizeof i); 2202165648Spiso if (exitval) { 2203165648Spiso exitval = EX_UNAVAILABLE; 2204165648Spiso warn("rule %u not available", i); 2205165648Spiso } 2206187764Sluigi } else if (co.do_pipe) { 2207187769Sluigi exitval = ipfw_delete_pipe(co.do_pipe, i); 220898943Sluigi } else { 2209187764Sluigi if (co.use_set) 2210170923Smaxim rulenum = (i & 0xffff) | (5 << 24) | 2211187764Sluigi ((co.use_set - 1) << 16); 2212170923Smaxim else 2213101978Sluigi rulenum = (i & 0xffff) | (do_set << 24); 2214117328Sluigi i = do_cmd(IP_FW_DEL, &rulenum, sizeof rulenum); 221598943Sluigi if (i) { 221698943Sluigi exitval = EX_UNAVAILABLE; 221798943Sluigi warn("rule %u: setsockopt(IP_FW_DEL)", 221898943Sluigi rulenum); 221998943Sluigi } 222098943Sluigi } 222198943Sluigi } 222298943Sluigi if (exitval != EX_OK) 222398943Sluigi exit(exitval); 222498943Sluigi} 222598943Sluigi 222698943Sluigi 222798943Sluigi/* 222898943Sluigi * fill the interface structure. We do not check the name as we can 222998943Sluigi * create interfaces dynamically, so checking them at insert time 223098943Sluigi * makes relatively little sense. 2231121816Sbrooks * Interface names containing '*', '?', or '[' are assumed to be shell 2232121816Sbrooks * patterns which match interfaces. 223398943Sluigi */ 223498943Sluigistatic void 223598943Sluigifill_iface(ipfw_insn_if *cmd, char *arg) 223698943Sluigi{ 223798943Sluigi cmd->name[0] = '\0'; 223898943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_if); 223998943Sluigi 224098943Sluigi /* Parse the interface or address */ 2241140271Sbrooks if (strcmp(arg, "any") == 0) 224298943Sluigi cmd->o.len = 0; /* effectively ignore this command */ 224398943Sluigi else if (!isdigit(*arg)) { 2244121816Sbrooks strlcpy(cmd->name, arg, sizeof(cmd->name)); 2245121816Sbrooks cmd->p.glob = strpbrk(arg, "*?[") != NULL ? 1 : 0; 224698943Sluigi } else if (!inet_aton(arg, &cmd->p.ip)) 224798943Sluigi errx(EX_DATAERR, "bad ip address ``%s''", arg); 224898943Sluigi} 224998943Sluigi 225098943Sluigistatic void 2251169424Smaximget_mac_addr_mask(const char *p, uint8_t *addr, uint8_t *mask) 225298943Sluigi{ 225398943Sluigi int i, l; 2254169424Smaxim char *ap, *ptr, *optr; 2255169424Smaxim struct ether_addr *mac; 2256169424Smaxim const char *macset = "0123456789abcdefABCDEF:"; 225798943Sluigi 2258169424Smaxim if (strcmp(p, "any") == 0) { 2259169424Smaxim for (i = 0; i < ETHER_ADDR_LEN; i++) 2260169424Smaxim addr[i] = mask[i] = 0; 226198943Sluigi return; 2262169424Smaxim } 226398943Sluigi 2264169424Smaxim optr = ptr = strdup(p); 2265169424Smaxim if ((ap = strsep(&ptr, "&/")) != NULL && *ap != 0) { 2266169424Smaxim l = strlen(ap); 2267169424Smaxim if (strspn(ap, macset) != l || (mac = ether_aton(ap)) == NULL) 2268169424Smaxim errx(EX_DATAERR, "Incorrect MAC address"); 2269169424Smaxim bcopy(mac, addr, ETHER_ADDR_LEN); 2270169424Smaxim } else 2271169424Smaxim errx(EX_DATAERR, "Incorrect MAC address"); 2272169424Smaxim 2273169424Smaxim if (ptr != NULL) { /* we have mask? */ 2274169424Smaxim if (p[ptr - optr - 1] == '/') { /* mask len */ 2275169424Smaxim l = strtol(ptr, &ap, 10); 2276169424Smaxim if (*ap != 0 || l > ETHER_ADDR_LEN * 8 || l < 0) 2277169424Smaxim errx(EX_DATAERR, "Incorrect mask length"); 2278169424Smaxim for (i = 0; l > 0 && i < ETHER_ADDR_LEN; l -= 8, i++) 2279169424Smaxim mask[i] = (l >= 8) ? 0xff: (~0) << (8 - l); 2280169424Smaxim } else { /* mask */ 2281169424Smaxim l = strlen(ptr); 2282169424Smaxim if (strspn(ptr, macset) != l || 2283169424Smaxim (mac = ether_aton(ptr)) == NULL) 2284169424Smaxim errx(EX_DATAERR, "Incorrect mask"); 2285169424Smaxim bcopy(mac, mask, ETHER_ADDR_LEN); 228698943Sluigi } 2287169424Smaxim } else { /* default mask: ff:ff:ff:ff:ff:ff */ 2288169424Smaxim for (i = 0; i < ETHER_ADDR_LEN; i++) 228998943Sluigi mask[i] = 0xff; 229098943Sluigi } 2291169424Smaxim for (i = 0; i < ETHER_ADDR_LEN; i++) 229298943Sluigi addr[i] &= mask[i]; 2293169424Smaxim 2294169424Smaxim free(optr); 229598943Sluigi} 229698943Sluigi 229798943Sluigi/* 229898943Sluigi * helper function, updates the pointer to cmd with the length 229998943Sluigi * of the current command, and also cleans up the first word of 230098943Sluigi * the new command in case it has been clobbered before. 230198943Sluigi */ 230298943Sluigistatic ipfw_insn * 230398943Sluiginext_cmd(ipfw_insn *cmd) 230498943Sluigi{ 230598943Sluigi cmd += F_LEN(cmd); 230698943Sluigi bzero(cmd, sizeof(*cmd)); 230798943Sluigi return cmd; 230898943Sluigi} 230998943Sluigi 231098943Sluigi/* 2311117469Sluigi * Takes arguments and copies them into a comment 2312117469Sluigi */ 2313117469Sluigistatic void 2314117469Sluigifill_comment(ipfw_insn *cmd, int ac, char **av) 2315117469Sluigi{ 2316117469Sluigi int i, l; 2317117469Sluigi char *p = (char *)(cmd + 1); 2318117577Sluigi 2319117469Sluigi cmd->opcode = O_NOP; 2320117469Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)); 2321117469Sluigi 2322117469Sluigi /* Compute length of comment string. */ 2323117469Sluigi for (i = 0, l = 0; i < ac; i++) 2324117469Sluigi l += strlen(av[i]) + 1; 2325117469Sluigi if (l == 0) 2326117469Sluigi return; 2327117469Sluigi if (l > 84) 2328117469Sluigi errx(EX_DATAERR, 2329117469Sluigi "comment too long (max 80 chars)"); 2330117469Sluigi l = 1 + (l+3)/4; 2331117469Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | l; 2332117469Sluigi for (i = 0; i < ac; i++) { 2333117469Sluigi strcpy(p, av[i]); 2334117469Sluigi p += strlen(av[i]); 2335117469Sluigi *p++ = ' '; 2336117469Sluigi } 2337117469Sluigi *(--p) = '\0'; 2338117469Sluigi} 2339117577Sluigi 2340117469Sluigi/* 234198943Sluigi * A function to fill simple commands of size 1. 234298943Sluigi * Existing flags are preserved. 234398943Sluigi */ 234498943Sluigistatic void 2345117328Sluigifill_cmd(ipfw_insn *cmd, enum ipfw_opcodes opcode, int flags, uint16_t arg) 234698943Sluigi{ 234798943Sluigi cmd->opcode = opcode; 234898943Sluigi cmd->len = ((cmd->len | flags) & (F_NOT | F_OR)) | 1; 234998943Sluigi cmd->arg1 = arg; 235098943Sluigi} 235198943Sluigi 235298943Sluigi/* 235398943Sluigi * Fetch and add the MAC address and type, with masks. This generates one or 235498943Sluigi * two microinstructions, and returns the pointer to the last one. 235598943Sluigi */ 235698943Sluigistatic ipfw_insn * 235798943Sluigiadd_mac(ipfw_insn *cmd, int ac, char *av[]) 235898943Sluigi{ 2359102087Sluigi ipfw_insn_mac *mac; 236098943Sluigi 2361102087Sluigi if (ac < 2) 2362102098Sluigi errx(EX_DATAERR, "MAC dst src"); 236398943Sluigi 236498943Sluigi cmd->opcode = O_MACADDR2; 236598943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | F_INSN_SIZE(ipfw_insn_mac); 236698943Sluigi 236798943Sluigi mac = (ipfw_insn_mac *)cmd; 2368101978Sluigi get_mac_addr_mask(av[0], mac->addr, mac->mask); /* dst */ 2369169424Smaxim get_mac_addr_mask(av[1], &(mac->addr[ETHER_ADDR_LEN]), 2370169424Smaxim &(mac->mask[ETHER_ADDR_LEN])); /* src */ 2371102087Sluigi return cmd; 2372102087Sluigi} 237398943Sluigi 2374102087Sluigistatic ipfw_insn * 2375102087Sluigiadd_mactype(ipfw_insn *cmd, int ac, char *av) 2376102087Sluigi{ 2377102087Sluigi if (ac < 1) 2378102087Sluigi errx(EX_DATAERR, "missing MAC type"); 2379102087Sluigi if (strcmp(av, "any") != 0) { /* we have a non-null type */ 2380102087Sluigi fill_newports((ipfw_insn_u16 *)cmd, av, IPPROTO_ETHERTYPE); 238198943Sluigi cmd->opcode = O_MAC_TYPE; 2382102087Sluigi return cmd; 2383102087Sluigi } else 2384102087Sluigi return NULL; 2385102087Sluigi} 238698943Sluigi 2387102087Sluigistatic ipfw_insn * 2388152923Sumeadd_proto0(ipfw_insn *cmd, char *av, u_char *protop) 2389102087Sluigi{ 2390102087Sluigi struct protoent *pe; 2391152923Sume char *ep; 2392152923Sume int proto; 2393102087Sluigi 2394156315Sume proto = strtol(av, &ep, 10); 2395156315Sume if (*ep != '\0' || proto <= 0) { 2396152923Sume if ((pe = getprotobyname(av)) == NULL) 2397152923Sume return NULL; 2398152923Sume proto = pe->p_proto; 2399152923Sume } 2400145246Sbrooks 2401152923Sume fill_cmd(cmd, O_PROTO, 0, proto); 2402152923Sume *protop = proto; 2403152923Sume return cmd; 2404152923Sume} 2405152923Sume 2406152923Sumestatic ipfw_insn * 2407152923Sumeadd_proto(ipfw_insn *cmd, char *av, u_char *protop) 2408152923Sume{ 2409152923Sume u_char proto = IPPROTO_IP; 2410152923Sume 2411156315Sume if (_substrcmp(av, "all") == 0 || strcmp(av, "ip") == 0) 2412146894Smlaier ; /* do not set O_IP4 nor O_IP6 */ 2413152923Sume else if (strcmp(av, "ip4") == 0) 2414152923Sume /* explicit "just IPv4" rule */ 2415152923Sume fill_cmd(cmd, O_IP4, 0, 0); 2416152923Sume else if (strcmp(av, "ip6") == 0) { 2417152923Sume /* explicit "just IPv6" rule */ 2418152923Sume proto = IPPROTO_IPV6; 2419152923Sume fill_cmd(cmd, O_IP6, 0, 0); 2420152923Sume } else 2421152923Sume return add_proto0(cmd, av, protop); 2422152923Sume 2423152923Sume *protop = proto; 2424152923Sume return cmd; 2425152923Sume} 2426152923Sume 2427152923Sumestatic ipfw_insn * 2428152923Sumeadd_proto_compat(ipfw_insn *cmd, char *av, u_char *protop) 2429152923Sume{ 2430152923Sume u_char proto = IPPROTO_IP; 2431152923Sume 2432152923Sume if (_substrcmp(av, "all") == 0 || strcmp(av, "ip") == 0) 2433152923Sume ; /* do not set O_IP4 nor O_IP6 */ 2434146894Smlaier else if (strcmp(av, "ipv4") == 0 || strcmp(av, "ip4") == 0) 2435146894Smlaier /* explicit "just IPv4" rule */ 2436146894Smlaier fill_cmd(cmd, O_IP4, 0, 0); 2437146894Smlaier else if (strcmp(av, "ipv6") == 0 || strcmp(av, "ip6") == 0) { 2438146894Smlaier /* explicit "just IPv6" rule */ 2439152923Sume proto = IPPROTO_IPV6; 2440146894Smlaier fill_cmd(cmd, O_IP6, 0, 0); 2441152923Sume } else 2442152923Sume return add_proto0(cmd, av, protop); 2443145246Sbrooks 2444152923Sume *protop = proto; 244598943Sluigi return cmd; 244698943Sluigi} 244798943Sluigi 2448102087Sluigistatic ipfw_insn * 2449102087Sluigiadd_srcip(ipfw_insn *cmd, char *av) 2450102087Sluigi{ 2451102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2452102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2453102087Sluigi cmd->opcode = O_IP_SRC_SET; 2454130281Sru else if (cmd->opcode == O_IP_DST_LOOKUP) /* table */ 2455130281Sru cmd->opcode = O_IP_SRC_LOOKUP; 2456102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2457102087Sluigi cmd->opcode = O_IP_SRC_ME; 2458102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2459102087Sluigi cmd->opcode = O_IP_SRC; 2460117328Sluigi else /* addr/mask */ 2461102087Sluigi cmd->opcode = O_IP_SRC_MASK; 2462102087Sluigi return cmd; 2463102087Sluigi} 2464102087Sluigi 2465102087Sluigistatic ipfw_insn * 2466102087Sluigiadd_dstip(ipfw_insn *cmd, char *av) 2467102087Sluigi{ 2468102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2469102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2470102087Sluigi ; 2471130281Sru else if (cmd->opcode == O_IP_DST_LOOKUP) /* table */ 2472130281Sru ; 2473102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2474102087Sluigi cmd->opcode = O_IP_DST_ME; 2475102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2476102087Sluigi cmd->opcode = O_IP_DST; 2477117328Sluigi else /* addr/mask */ 2478102087Sluigi cmd->opcode = O_IP_DST_MASK; 2479102087Sluigi return cmd; 2480102087Sluigi} 2481102087Sluigi 2482102087Sluigistatic ipfw_insn * 2483102087Sluigiadd_ports(ipfw_insn *cmd, char *av, u_char proto, int opcode) 2484102087Sluigi{ 2485140271Sbrooks if (_substrcmp(av, "any") == 0) { 2486102087Sluigi return NULL; 2487102087Sluigi } else if (fill_newports((ipfw_insn_u16 *)cmd, av, proto)) { 2488102087Sluigi /* XXX todo: check that we have a protocol with ports */ 2489102087Sluigi cmd->opcode = opcode; 2490102087Sluigi return cmd; 2491102087Sluigi } 2492102087Sluigi return NULL; 2493102087Sluigi} 2494102087Sluigi 2495145246Sbrooksstatic ipfw_insn * 2496145246Sbrooksadd_src(ipfw_insn *cmd, char *av, u_char proto) 2497145246Sbrooks{ 2498145246Sbrooks struct in6_addr a; 2499158553Smlaier char *host, *ch; 2500158553Smlaier ipfw_insn *ret = NULL; 2501145246Sbrooks 2502158553Smlaier if ((host = strdup(av)) == NULL) 2503158553Smlaier return NULL; 2504158553Smlaier if ((ch = strrchr(host, '/')) != NULL) 2505158553Smlaier *ch = '\0'; 2506158553Smlaier 2507145246Sbrooks if (proto == IPPROTO_IPV6 || strcmp(av, "me6") == 0 || 2508158553Smlaier inet_pton(AF_INET6, host, &a)) 2509158553Smlaier ret = add_srcip6(cmd, av); 2510145246Sbrooks /* XXX: should check for IPv4, not !IPv6 */ 2511161483Sdwmalone if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 || 2512161483Sdwmalone !inet_pton(AF_INET6, host, &a))) 2513158553Smlaier ret = add_srcip(cmd, av); 2514161483Sdwmalone if (ret == NULL && strcmp(av, "any") != 0) 2515158553Smlaier ret = cmd; 2516145246Sbrooks 2517158553Smlaier free(host); 2518158553Smlaier return ret; 2519145246Sbrooks} 2520145246Sbrooks 2521145246Sbrooksstatic ipfw_insn * 2522145246Sbrooksadd_dst(ipfw_insn *cmd, char *av, u_char proto) 2523145246Sbrooks{ 2524145246Sbrooks struct in6_addr a; 2525158553Smlaier char *host, *ch; 2526158553Smlaier ipfw_insn *ret = NULL; 2527145246Sbrooks 2528158553Smlaier if ((host = strdup(av)) == NULL) 2529158553Smlaier return NULL; 2530158553Smlaier if ((ch = strrchr(host, '/')) != NULL) 2531158553Smlaier *ch = '\0'; 2532158553Smlaier 2533145246Sbrooks if (proto == IPPROTO_IPV6 || strcmp(av, "me6") == 0 || 2534158553Smlaier inet_pton(AF_INET6, host, &a)) 2535158553Smlaier ret = add_dstip6(cmd, av); 2536145246Sbrooks /* XXX: should check for IPv4, not !IPv6 */ 2537161483Sdwmalone if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 || 2538161483Sdwmalone !inet_pton(AF_INET6, host, &a))) 2539158553Smlaier ret = add_dstip(cmd, av); 2540161483Sdwmalone if (ret == NULL && strcmp(av, "any") != 0) 2541158553Smlaier ret = cmd; 2542145246Sbrooks 2543158553Smlaier free(host); 2544158553Smlaier return ret; 2545145246Sbrooks} 2546145246Sbrooks 254798943Sluigi/* 254898943Sluigi * Parse arguments and assemble the microinstructions which make up a rule. 254998943Sluigi * Rules are added into the 'rulebuf' and then copied in the correct order 255098943Sluigi * into the actual rule. 255198943Sluigi * 2552136071Sgreen * The syntax for a rule starts with the action, followed by 2553136071Sgreen * optional action parameters, and the various match patterns. 2554108533Sschweikh * In the assembled microcode, the first opcode must be an O_PROBE_STATE 255598943Sluigi * (generated if the rule includes a keep-state option), then the 2556136071Sgreen * various match patterns, log/altq actions, and the actual action. 2557106505Smaxim * 255898943Sluigi */ 2559187767Sluigivoid 2560187767Sluigiipfw_add(int ac, char *av[]) 256198943Sluigi{ 256298943Sluigi /* 256398943Sluigi * rules are added into the 'rulebuf' and then copied in 256498943Sluigi * the correct order into the actual rule. 256598943Sluigi * Some things that need to go out of order (prob, action etc.) 256698943Sluigi * go into actbuf[]. 256798943Sluigi */ 2568117328Sluigi static uint32_t rulebuf[255], actbuf[255], cmdbuf[255]; 256998943Sluigi 2570117469Sluigi ipfw_insn *src, *dst, *cmd, *action, *prev=NULL; 2571102087Sluigi ipfw_insn *first_cmd; /* first match pattern */ 257298943Sluigi 257398943Sluigi struct ip_fw *rule; 257498943Sluigi 257598943Sluigi /* 257698943Sluigi * various flags used to record that we entered some fields. 257798943Sluigi */ 2578101116Sluigi ipfw_insn *have_state = NULL; /* check-state or keep-state */ 2579158879Soleg ipfw_insn *have_log = NULL, *have_altq = NULL, *have_tag = NULL; 2580134475Smaxim size_t len; 258198943Sluigi 258298943Sluigi int i; 258398943Sluigi 258498943Sluigi int open_par = 0; /* open parenthesis ( */ 258598943Sluigi 258698943Sluigi /* proto is here because it is used to fetch ports */ 258798943Sluigi u_char proto = IPPROTO_IP; /* default protocol */ 258898943Sluigi 2589107289Sluigi double match_prob = 1; /* match probability, default is always match */ 2590107289Sluigi 259198943Sluigi bzero(actbuf, sizeof(actbuf)); /* actions go here */ 259298943Sluigi bzero(cmdbuf, sizeof(cmdbuf)); 259398943Sluigi bzero(rulebuf, sizeof(rulebuf)); 259498943Sluigi 259598943Sluigi rule = (struct ip_fw *)rulebuf; 259698943Sluigi cmd = (ipfw_insn *)cmdbuf; 259798943Sluigi action = (ipfw_insn *)actbuf; 259898943Sluigi 259998943Sluigi av++; ac--; 260098943Sluigi 260198943Sluigi /* [rule N] -- Rule number optional */ 260298943Sluigi if (ac && isdigit(**av)) { 260398943Sluigi rule->rulenum = atoi(*av); 260498943Sluigi av++; 260598943Sluigi ac--; 260698943Sluigi } 260798943Sluigi 2608117655Sluigi /* [set N] -- set number (0..RESVD_SET), optional */ 2609140271Sbrooks if (ac > 1 && _substrcmp(*av, "set") == 0) { 2610101628Sluigi int set = strtoul(av[1], NULL, 10); 2611117655Sluigi if (set < 0 || set > RESVD_SET) 2612101628Sluigi errx(EX_DATAERR, "illegal set %s", av[1]); 2613101628Sluigi rule->set = set; 2614101628Sluigi av += 2; ac -= 2; 2615101628Sluigi } 2616101628Sluigi 261798943Sluigi /* [prob D] -- match probability, optional */ 2618140271Sbrooks if (ac > 1 && _substrcmp(*av, "prob") == 0) { 2619107289Sluigi match_prob = strtod(av[1], NULL); 262098943Sluigi 2621107289Sluigi if (match_prob <= 0 || match_prob > 1) 262298943Sluigi errx(EX_DATAERR, "illegal match prob. %s", av[1]); 262398943Sluigi av += 2; ac -= 2; 262498943Sluigi } 262598943Sluigi 262698943Sluigi /* action -- mandatory */ 262798943Sluigi NEED1("missing action"); 262898943Sluigi i = match_token(rule_actions, *av); 262998943Sluigi ac--; av++; 263098943Sluigi action->len = 1; /* default */ 263198943Sluigi switch(i) { 263298943Sluigi case TOK_CHECKSTATE: 2633101116Sluigi have_state = action; 263498943Sluigi action->opcode = O_CHECK_STATE; 263598943Sluigi break; 263698943Sluigi 263798943Sluigi case TOK_ACCEPT: 263898943Sluigi action->opcode = O_ACCEPT; 263998943Sluigi break; 264098943Sluigi 264198943Sluigi case TOK_DENY: 264298943Sluigi action->opcode = O_DENY; 264399475Sluigi action->arg1 = 0; 264498943Sluigi break; 264598943Sluigi 264699475Sluigi case TOK_REJECT: 264799475Sluigi action->opcode = O_REJECT; 264899475Sluigi action->arg1 = ICMP_UNREACH_HOST; 264999475Sluigi break; 265099475Sluigi 265199475Sluigi case TOK_RESET: 265299475Sluigi action->opcode = O_REJECT; 265399475Sluigi action->arg1 = ICMP_REJECT_RST; 265499475Sluigi break; 265599475Sluigi 2656149020Sbz case TOK_RESET6: 2657149020Sbz action->opcode = O_UNREACH6; 2658149020Sbz action->arg1 = ICMP6_UNREACH_RST; 2659149020Sbz break; 2660149020Sbz 266199475Sluigi case TOK_UNREACH: 266299475Sluigi action->opcode = O_REJECT; 266399475Sluigi NEED1("missing reject code"); 266499475Sluigi fill_reject_code(&action->arg1, *av); 266599475Sluigi ac--; av++; 266699475Sluigi break; 266799475Sluigi 2668149020Sbz case TOK_UNREACH6: 2669149020Sbz action->opcode = O_UNREACH6; 2670149020Sbz NEED1("missing unreach code"); 2671149020Sbz fill_unreach6_code(&action->arg1, *av); 2672149020Sbz ac--; av++; 2673149020Sbz break; 2674149020Sbz 267598943Sluigi case TOK_COUNT: 267698943Sluigi action->opcode = O_COUNT; 267798943Sluigi break; 267898943Sluigi 2679176517Spiso case TOK_NAT: 2680176517Spiso action->opcode = O_NAT; 2681176517Spiso action->len = F_INSN_SIZE(ipfw_insn_nat); 2682176517Spiso goto chkarg; 2683178888Sjulian 268498943Sluigi case TOK_QUEUE: 2685153374Sglebius action->opcode = O_QUEUE; 2686153374Sglebius goto chkarg; 268798943Sluigi case TOK_PIPE: 2688153374Sglebius action->opcode = O_PIPE; 2689153374Sglebius goto chkarg; 269098943Sluigi case TOK_SKIPTO: 2691153374Sglebius action->opcode = O_SKIPTO; 2692153374Sglebius goto chkarg; 2693153374Sglebius case TOK_NETGRAPH: 2694153374Sglebius action->opcode = O_NETGRAPH; 2695153374Sglebius goto chkarg; 2696153374Sglebius case TOK_NGTEE: 2697153374Sglebius action->opcode = O_NGTEE; 2698153374Sglebius goto chkarg; 269998943Sluigi case TOK_DIVERT: 2700153374Sglebius action->opcode = O_DIVERT; 2701153374Sglebius goto chkarg; 270298943Sluigi case TOK_TEE: 2703153374Sglebius action->opcode = O_TEE; 2704153374Sglebiuschkarg: 2705153374Sglebius if (!ac) 2706153374Sglebius errx(EX_USAGE, "missing argument for %s", *(av - 1)); 2707153374Sglebius if (isdigit(**av)) { 2708153374Sglebius action->arg1 = strtoul(*av, NULL, 10); 2709153374Sglebius if (action->arg1 <= 0 || action->arg1 >= IP_FW_TABLEARG) 2710153374Sglebius errx(EX_DATAERR, "illegal argument for %s", 2711153374Sglebius *(av - 1)); 2712187762Sluigi } else if (_substrcmp(*av, "tablearg") == 0) { 2713153374Sglebius action->arg1 = IP_FW_TABLEARG; 2714153374Sglebius } else if (i == TOK_DIVERT || i == TOK_TEE) { 271598943Sluigi struct servent *s; 271698943Sluigi setservent(1); 271798943Sluigi s = getservbyname(av[0], "divert"); 271898943Sluigi if (s != NULL) 271998943Sluigi action->arg1 = ntohs(s->s_port); 272098943Sluigi else 272198943Sluigi errx(EX_DATAERR, "illegal divert/tee port"); 2722153374Sglebius } else 2723153374Sglebius errx(EX_DATAERR, "illegal argument for %s", *(av - 1)); 272498943Sluigi ac--; av++; 272598943Sluigi break; 272698943Sluigi 272798943Sluigi case TOK_FORWARD: { 272898943Sluigi ipfw_insn_sa *p = (ipfw_insn_sa *)action; 272998943Sluigi char *s, *end; 273098943Sluigi 273198943Sluigi NEED1("missing forward address[:port]"); 273298943Sluigi 273398943Sluigi action->opcode = O_FORWARD_IP; 273498943Sluigi action->len = F_INSN_SIZE(ipfw_insn_sa); 273598943Sluigi 273698943Sluigi p->sa.sin_len = sizeof(struct sockaddr_in); 273798943Sluigi p->sa.sin_family = AF_INET; 273898943Sluigi p->sa.sin_port = 0; 273998943Sluigi /* 274098943Sluigi * locate the address-port separator (':' or ',') 274198943Sluigi */ 274298943Sluigi s = strchr(*av, ':'); 274398943Sluigi if (s == NULL) 274498943Sluigi s = strchr(*av, ','); 274598943Sluigi if (s != NULL) { 274698943Sluigi *(s++) = '\0'; 274798943Sluigi i = strtoport(s, &end, 0 /* base */, 0 /* proto */); 274898943Sluigi if (s == end) 274998943Sluigi errx(EX_DATAERR, 275098943Sluigi "illegal forwarding port ``%s''", s); 2751103241Sluigi p->sa.sin_port = (u_short)i; 275298943Sluigi } 2753161456Sjulian if (_substrcmp(*av, "tablearg") == 0) 2754161456Sjulian p->sa.sin_addr.s_addr = INADDR_ANY; 2755161456Sjulian else 2756161424Sjulian lookup_host(*av, &(p->sa.sin_addr)); 275798943Sluigi ac--; av++; 275898943Sluigi break; 2759161424Sjulian } 2760117469Sluigi case TOK_COMMENT: 2761117469Sluigi /* pretend it is a 'count' rule followed by the comment */ 2762117469Sluigi action->opcode = O_COUNT; 2763117469Sluigi ac++; av--; /* go back... */ 2764117469Sluigi break; 2765178888Sjulian 2766178888Sjulian case TOK_SETFIB: 2767178888Sjulian { 2768178888Sjulian int numfibs; 2769178916Sjulian size_t intsize = sizeof(int); 2770178888Sjulian 2771178888Sjulian action->opcode = O_SETFIB; 2772178888Sjulian NEED1("missing fib number"); 2773178888Sjulian action->arg1 = strtoul(*av, NULL, 10); 2774178916Sjulian if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1) 2775178888Sjulian errx(EX_DATAERR, "fibs not suported.\n"); 2776178888Sjulian if (action->arg1 >= numfibs) /* Temporary */ 2777178888Sjulian errx(EX_DATAERR, "fib too large.\n"); 2778178888Sjulian ac--; av++; 2779178888Sjulian break; 2780178888Sjulian } 2781165648Spiso 278298943Sluigi default: 2783102087Sluigi errx(EX_DATAERR, "invalid action %s\n", av[-1]); 278498943Sluigi } 278598943Sluigi action = next_cmd(action); 278698943Sluigi 278798943Sluigi /* 2788136071Sgreen * [altq queuename] -- altq tag, optional 278998943Sluigi * [log [logamount N]] -- log, optional 279098943Sluigi * 2791136071Sgreen * If they exist, it go first in the cmdbuf, but then it is 279298943Sluigi * skipped in the copy section to the end of the buffer. 279398943Sluigi */ 2794136071Sgreen while (ac != 0 && (i = match_token(rule_action_params, *av)) != -1) { 2795136071Sgreen ac--; av++; 2796136071Sgreen switch (i) { 2797136071Sgreen case TOK_LOG: 2798136071Sgreen { 2799136071Sgreen ipfw_insn_log *c = (ipfw_insn_log *)cmd; 2800136071Sgreen int l; 280198943Sluigi 2802136071Sgreen if (have_log) 2803136071Sgreen errx(EX_DATAERR, 2804136071Sgreen "log cannot be specified more than once"); 2805136071Sgreen have_log = (ipfw_insn *)c; 2806136071Sgreen cmd->len = F_INSN_SIZE(ipfw_insn_log); 2807136071Sgreen cmd->opcode = O_LOG; 2808140271Sbrooks if (ac && _substrcmp(*av, "logamount") == 0) { 2809136071Sgreen ac--; av++; 2810136071Sgreen NEED1("logamount requires argument"); 2811136071Sgreen l = atoi(*av); 2812136071Sgreen if (l < 0) 2813136071Sgreen errx(EX_DATAERR, 2814136071Sgreen "logamount must be positive"); 2815136071Sgreen c->max_log = l; 2816136071Sgreen ac--; av++; 2817136071Sgreen } else { 2818136071Sgreen len = sizeof(c->max_log); 2819136071Sgreen if (sysctlbyname("net.inet.ip.fw.verbose_limit", 2820136071Sgreen &c->max_log, &len, NULL, 0) == -1) 2821136071Sgreen errx(1, "sysctlbyname(\"%s\")", 2822136071Sgreen "net.inet.ip.fw.verbose_limit"); 2823136071Sgreen } 2824136071Sgreen } 2825136071Sgreen break; 2826136071Sgreen 2827136071Sgreen case TOK_ALTQ: 2828136071Sgreen { 2829136071Sgreen ipfw_insn_altq *a = (ipfw_insn_altq *)cmd; 2830136071Sgreen 2831136071Sgreen NEED1("missing altq queue name"); 2832136071Sgreen if (have_altq) 2833136071Sgreen errx(EX_DATAERR, 2834136071Sgreen "altq cannot be specified more than once"); 2835136071Sgreen have_altq = (ipfw_insn *)a; 2836136071Sgreen cmd->len = F_INSN_SIZE(ipfw_insn_altq); 2837136071Sgreen cmd->opcode = O_ALTQ; 2838187983Sluigi a->qid = altq_name_to_qid(*av); 283998943Sluigi ac--; av++; 2840136071Sgreen } 2841136071Sgreen break; 2842136071Sgreen 2843158879Soleg case TOK_TAG: 2844159636Soleg case TOK_UNTAG: { 2845159636Soleg uint16_t tag; 2846159636Soleg 2847158879Soleg if (have_tag) 2848159636Soleg errx(EX_USAGE, "tag and untag cannot be " 2849159636Soleg "specified more than once"); 2850182823Srik GET_UINT_ARG(tag, 1, IPFW_DEFAULT_RULE - 1, i, 2851182823Srik rule_action_params); 2852158879Soleg have_tag = cmd; 2853159636Soleg fill_cmd(cmd, O_TAG, (i == TOK_TAG) ? 0: F_NOT, tag); 2854158879Soleg ac--; av++; 2855158879Soleg break; 2856159636Soleg } 2857158879Soleg 2858136071Sgreen default: 2859136071Sgreen abort(); 286098943Sluigi } 286198943Sluigi cmd = next_cmd(cmd); 286298943Sluigi } 286398943Sluigi 2864101116Sluigi if (have_state) /* must be a check-state, we are done */ 286598943Sluigi goto done; 286698943Sluigi 286798943Sluigi#define OR_START(target) \ 286898943Sluigi if (ac && (*av[0] == '(' || *av[0] == '{')) { \ 286998943Sluigi if (open_par) \ 287098943Sluigi errx(EX_USAGE, "nested \"(\" not allowed\n"); \ 2871101641Sluigi prev = NULL; \ 287298943Sluigi open_par = 1; \ 287398943Sluigi if ( (av[0])[1] == '\0') { \ 287498943Sluigi ac--; av++; \ 287598943Sluigi } else \ 287698943Sluigi (*av)++; \ 287798943Sluigi } \ 287898943Sluigi target: \ 287998943Sluigi 288098943Sluigi 288198943Sluigi#define CLOSE_PAR \ 288298943Sluigi if (open_par) { \ 288398943Sluigi if (ac && ( \ 2884140271Sbrooks strcmp(*av, ")") == 0 || \ 2885140271Sbrooks strcmp(*av, "}") == 0)) { \ 2886101641Sluigi prev = NULL; \ 288798943Sluigi open_par = 0; \ 288898943Sluigi ac--; av++; \ 288998943Sluigi } else \ 289098943Sluigi errx(EX_USAGE, "missing \")\"\n"); \ 289198943Sluigi } 2892106505Smaxim 289398943Sluigi#define NOT_BLOCK \ 2894140271Sbrooks if (ac && _substrcmp(*av, "not") == 0) { \ 289598943Sluigi if (cmd->len & F_NOT) \ 289698943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); \ 289798943Sluigi cmd->len |= F_NOT; \ 289898943Sluigi ac--; av++; \ 289998943Sluigi } 290098943Sluigi 290198943Sluigi#define OR_BLOCK(target) \ 2902140271Sbrooks if (ac && _substrcmp(*av, "or") == 0) { \ 290398943Sluigi if (prev == NULL || open_par == 0) \ 290498943Sluigi errx(EX_DATAERR, "invalid OR block"); \ 290598943Sluigi prev->len |= F_OR; \ 290698943Sluigi ac--; av++; \ 290798943Sluigi goto target; \ 290898943Sluigi } \ 290998943Sluigi CLOSE_PAR; 291098943Sluigi 2911102087Sluigi first_cmd = cmd; 2912102098Sluigi 2913102098Sluigi#if 0 291498943Sluigi /* 2915102087Sluigi * MAC addresses, optional. 2916102087Sluigi * If we have this, we skip the part "proto from src to dst" 2917102087Sluigi * and jump straight to the option parsing. 2918102087Sluigi */ 2919102087Sluigi NOT_BLOCK; 2920102087Sluigi NEED1("missing protocol"); 2921140271Sbrooks if (_substrcmp(*av, "MAC") == 0 || 2922140271Sbrooks _substrcmp(*av, "mac") == 0) { 2923102087Sluigi ac--; av++; /* the "MAC" keyword */ 2924102087Sluigi add_mac(cmd, ac, av); /* exits in case of errors */ 2925102087Sluigi cmd = next_cmd(cmd); 2926102087Sluigi ac -= 2; av += 2; /* dst-mac and src-mac */ 2927102087Sluigi NOT_BLOCK; 2928102087Sluigi NEED1("missing mac type"); 2929102087Sluigi if (add_mactype(cmd, ac, av[0])) 2930102087Sluigi cmd = next_cmd(cmd); 2931102087Sluigi ac--; av++; /* any or mac-type */ 2932102087Sluigi goto read_options; 2933102087Sluigi } 2934102098Sluigi#endif 2935102087Sluigi 2936102087Sluigi /* 293798943Sluigi * protocol, mandatory 293898943Sluigi */ 293998943Sluigi OR_START(get_proto); 294098943Sluigi NOT_BLOCK; 294198943Sluigi NEED1("missing protocol"); 2942152923Sume if (add_proto_compat(cmd, *av, &proto)) { 2943102087Sluigi av++; ac--; 2944147105Smlaier if (F_LEN(cmd) != 0) { 2945102087Sluigi prev = cmd; 2946102087Sluigi cmd = next_cmd(cmd); 2947102087Sluigi } 2948102098Sluigi } else if (first_cmd != cmd) { 2949116438Smaxim errx(EX_DATAERR, "invalid protocol ``%s''", *av); 2950102098Sluigi } else 2951102098Sluigi goto read_options; 295298943Sluigi OR_BLOCK(get_proto); 295398943Sluigi 295498943Sluigi /* 2955102087Sluigi * "from", mandatory 295698943Sluigi */ 2957140271Sbrooks if (!ac || _substrcmp(*av, "from") != 0) 295898943Sluigi errx(EX_USAGE, "missing ``from''"); 295998943Sluigi ac--; av++; 296098943Sluigi 296198943Sluigi /* 296298943Sluigi * source IP, mandatory 296398943Sluigi */ 296498943Sluigi OR_START(source_ip); 296598943Sluigi NOT_BLOCK; /* optional "not" */ 296698943Sluigi NEED1("missing source address"); 2967145246Sbrooks if (add_src(cmd, *av, proto)) { 2968102087Sluigi ac--; av++; 2969102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 2970102087Sluigi prev = cmd; 2971102087Sluigi cmd = next_cmd(cmd); 2972102087Sluigi } 2973145246Sbrooks } else 2974145246Sbrooks errx(EX_USAGE, "bad source address %s", *av); 297598943Sluigi OR_BLOCK(source_ip); 297698943Sluigi 297798943Sluigi /* 297898943Sluigi * source ports, optional 297998943Sluigi */ 298098943Sluigi NOT_BLOCK; /* optional "not" */ 2981101641Sluigi if (ac) { 2982140271Sbrooks if (_substrcmp(*av, "any") == 0 || 2983102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 2984102087Sluigi ac--; av++; 2985102087Sluigi if (F_LEN(cmd) != 0) 2986102087Sluigi cmd = next_cmd(cmd); 2987101641Sluigi } 298898943Sluigi } 298998943Sluigi 299098943Sluigi /* 2991102087Sluigi * "to", mandatory 299298943Sluigi */ 2993140271Sbrooks if (!ac || _substrcmp(*av, "to") != 0) 299498943Sluigi errx(EX_USAGE, "missing ``to''"); 299598943Sluigi av++; ac--; 299698943Sluigi 299798943Sluigi /* 299898943Sluigi * destination, mandatory 299998943Sluigi */ 300098943Sluigi OR_START(dest_ip); 300198943Sluigi NOT_BLOCK; /* optional "not" */ 300298943Sluigi NEED1("missing dst address"); 3003145246Sbrooks if (add_dst(cmd, *av, proto)) { 3004102087Sluigi ac--; av++; 3005102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 3006102087Sluigi prev = cmd; 3007102087Sluigi cmd = next_cmd(cmd); 3008102087Sluigi } 3009145246Sbrooks } else 3010145246Sbrooks errx( EX_USAGE, "bad destination address %s", *av); 301198943Sluigi OR_BLOCK(dest_ip); 301298943Sluigi 301398943Sluigi /* 301498943Sluigi * dest. ports, optional 301598943Sluigi */ 301698943Sluigi NOT_BLOCK; /* optional "not" */ 3017101641Sluigi if (ac) { 3018140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3019102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 3020102087Sluigi ac--; av++; 3021102087Sluigi if (F_LEN(cmd) != 0) 3022102087Sluigi cmd = next_cmd(cmd); 3023101641Sluigi } 302498943Sluigi } 302598943Sluigi 302698943Sluigiread_options: 3027102087Sluigi if (ac && first_cmd == cmd) { 3028102087Sluigi /* 3029102087Sluigi * nothing specified so far, store in the rule to ease 3030102087Sluigi * printout later. 3031102087Sluigi */ 3032102087Sluigi rule->_pad = 1; 3033102087Sluigi } 303498943Sluigi prev = NULL; 303598943Sluigi while (ac) { 3036101641Sluigi char *s; 3037101641Sluigi ipfw_insn_u32 *cmd32; /* alias for cmd */ 303898943Sluigi 3039101641Sluigi s = *av; 3040101641Sluigi cmd32 = (ipfw_insn_u32 *)cmd; 3041101641Sluigi 304298943Sluigi if (*s == '!') { /* alternate syntax for NOT */ 304398943Sluigi if (cmd->len & F_NOT) 304498943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 304598943Sluigi cmd->len = F_NOT; 304698943Sluigi s++; 304798943Sluigi } 304898943Sluigi i = match_token(rule_options, s); 304998943Sluigi ac--; av++; 305098943Sluigi switch(i) { 305198943Sluigi case TOK_NOT: 305298943Sluigi if (cmd->len & F_NOT) 305398943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 305498943Sluigi cmd->len = F_NOT; 305598943Sluigi break; 305698943Sluigi 305798943Sluigi case TOK_OR: 3058101641Sluigi if (open_par == 0 || prev == NULL) 305998943Sluigi errx(EX_USAGE, "invalid \"or\" block\n"); 306098943Sluigi prev->len |= F_OR; 306198943Sluigi break; 3062101641Sluigi 3063101641Sluigi case TOK_STARTBRACE: 3064101641Sluigi if (open_par) 3065101641Sluigi errx(EX_USAGE, "+nested \"(\" not allowed\n"); 3066101641Sluigi open_par = 1; 3067101641Sluigi break; 3068101641Sluigi 3069101641Sluigi case TOK_ENDBRACE: 3070101641Sluigi if (!open_par) 3071101641Sluigi errx(EX_USAGE, "+missing \")\"\n"); 3072101641Sluigi open_par = 0; 3073102087Sluigi prev = NULL; 3074101641Sluigi break; 3075101641Sluigi 307698943Sluigi case TOK_IN: 307798943Sluigi fill_cmd(cmd, O_IN, 0, 0); 307898943Sluigi break; 307998943Sluigi 308098943Sluigi case TOK_OUT: 308198943Sluigi cmd->len ^= F_NOT; /* toggle F_NOT */ 308298943Sluigi fill_cmd(cmd, O_IN, 0, 0); 308398943Sluigi break; 308498943Sluigi 3085136073Sgreen case TOK_DIVERTED: 3086136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 3); 3087136073Sgreen break; 3088136073Sgreen 3089136073Sgreen case TOK_DIVERTEDLOOPBACK: 3090136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 1); 3091136073Sgreen break; 3092136073Sgreen 3093136073Sgreen case TOK_DIVERTEDOUTPUT: 3094136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 2); 3095136073Sgreen break; 3096136073Sgreen 309798943Sluigi case TOK_FRAG: 309898943Sluigi fill_cmd(cmd, O_FRAG, 0, 0); 309998943Sluigi break; 310098943Sluigi 310198943Sluigi case TOK_LAYER2: 310298943Sluigi fill_cmd(cmd, O_LAYER2, 0, 0); 310398943Sluigi break; 310498943Sluigi 310598943Sluigi case TOK_XMIT: 310698943Sluigi case TOK_RECV: 310798943Sluigi case TOK_VIA: 310898943Sluigi NEED1("recv, xmit, via require interface name" 310998943Sluigi " or address"); 311098943Sluigi fill_iface((ipfw_insn_if *)cmd, av[0]); 311198943Sluigi ac--; av++; 311298943Sluigi if (F_LEN(cmd) == 0) /* not a valid address */ 311398943Sluigi break; 311498943Sluigi if (i == TOK_XMIT) 311598943Sluigi cmd->opcode = O_XMIT; 311698943Sluigi else if (i == TOK_RECV) 311798943Sluigi cmd->opcode = O_RECV; 311898943Sluigi else if (i == TOK_VIA) 311998943Sluigi cmd->opcode = O_VIA; 312098943Sluigi break; 312198943Sluigi 312299475Sluigi case TOK_ICMPTYPES: 312399475Sluigi NEED1("icmptypes requires list of types"); 312499475Sluigi fill_icmptypes((ipfw_insn_u32 *)cmd, *av); 312599475Sluigi av++; ac--; 312699475Sluigi break; 3127145246Sbrooks 3128145246Sbrooks case TOK_ICMP6TYPES: 3129145246Sbrooks NEED1("icmptypes requires list of types"); 3130145246Sbrooks fill_icmp6types((ipfw_insn_icmp6 *)cmd, *av); 3131145246Sbrooks av++; ac--; 3132145246Sbrooks break; 313399475Sluigi 313498943Sluigi case TOK_IPTTL: 313598943Sluigi NEED1("ipttl requires TTL"); 3136116690Sluigi if (strpbrk(*av, "-,")) { 3137116690Sluigi if (!add_ports(cmd, *av, 0, O_IPTTL)) 3138116690Sluigi errx(EX_DATAERR, "invalid ipttl %s", *av); 3139116690Sluigi } else 3140116690Sluigi fill_cmd(cmd, O_IPTTL, 0, strtoul(*av, NULL, 0)); 314198943Sluigi ac--; av++; 314298943Sluigi break; 314398943Sluigi 314498943Sluigi case TOK_IPID: 3145116690Sluigi NEED1("ipid requires id"); 3146116690Sluigi if (strpbrk(*av, "-,")) { 3147116690Sluigi if (!add_ports(cmd, *av, 0, O_IPID)) 3148116690Sluigi errx(EX_DATAERR, "invalid ipid %s", *av); 3149116690Sluigi } else 3150116690Sluigi fill_cmd(cmd, O_IPID, 0, strtoul(*av, NULL, 0)); 315198943Sluigi ac--; av++; 315298943Sluigi break; 315398943Sluigi 315498943Sluigi case TOK_IPLEN: 315598943Sluigi NEED1("iplen requires length"); 3156116690Sluigi if (strpbrk(*av, "-,")) { 3157116690Sluigi if (!add_ports(cmd, *av, 0, O_IPLEN)) 3158116690Sluigi errx(EX_DATAERR, "invalid ip len %s", *av); 3159116690Sluigi } else 3160116690Sluigi fill_cmd(cmd, O_IPLEN, 0, strtoul(*av, NULL, 0)); 316198943Sluigi ac--; av++; 316298943Sluigi break; 316398943Sluigi 316498943Sluigi case TOK_IPVER: 316598943Sluigi NEED1("ipver requires version"); 316698943Sluigi fill_cmd(cmd, O_IPVER, 0, strtoul(*av, NULL, 0)); 316798943Sluigi ac--; av++; 316898943Sluigi break; 316998943Sluigi 317099475Sluigi case TOK_IPPRECEDENCE: 317199475Sluigi NEED1("ipprecedence requires value"); 317299475Sluigi fill_cmd(cmd, O_IPPRECEDENCE, 0, 317399475Sluigi (strtoul(*av, NULL, 0) & 7) << 5); 317499475Sluigi ac--; av++; 317599475Sluigi break; 317699475Sluigi 317798943Sluigi case TOK_IPOPTS: 317898943Sluigi NEED1("missing argument for ipoptions"); 3179101116Sluigi fill_flags(cmd, O_IPOPT, f_ipopts, *av); 318098943Sluigi ac--; av++; 318198943Sluigi break; 318298943Sluigi 318399475Sluigi case TOK_IPTOS: 318499475Sluigi NEED1("missing argument for iptos"); 3185101116Sluigi fill_flags(cmd, O_IPTOS, f_iptos, *av); 318699475Sluigi ac--; av++; 318799475Sluigi break; 318899475Sluigi 318998943Sluigi case TOK_UID: 319098943Sluigi NEED1("uid requires argument"); 319198943Sluigi { 319298943Sluigi char *end; 319398943Sluigi uid_t uid; 319498943Sluigi struct passwd *pwd; 319598943Sluigi 319698943Sluigi cmd->opcode = O_UID; 319798943Sluigi uid = strtoul(*av, &end, 0); 319898943Sluigi pwd = (*end == '\0') ? getpwuid(uid) : getpwnam(*av); 319998943Sluigi if (pwd == NULL) 320098943Sluigi errx(EX_DATAERR, "uid \"%s\" nonexistent", *av); 3201106504Smaxim cmd32->d[0] = pwd->pw_uid; 3202135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 320398943Sluigi ac--; av++; 320498943Sluigi } 320598943Sluigi break; 320698943Sluigi 320798943Sluigi case TOK_GID: 320898943Sluigi NEED1("gid requires argument"); 320998943Sluigi { 321098943Sluigi char *end; 321198943Sluigi gid_t gid; 321298943Sluigi struct group *grp; 321398943Sluigi 321498943Sluigi cmd->opcode = O_GID; 321598943Sluigi gid = strtoul(*av, &end, 0); 321698943Sluigi grp = (*end == '\0') ? getgrgid(gid) : getgrnam(*av); 321798943Sluigi if (grp == NULL) 321898943Sluigi errx(EX_DATAERR, "gid \"%s\" nonexistent", *av); 3219106504Smaxim cmd32->d[0] = grp->gr_gid; 3220135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 322198943Sluigi ac--; av++; 322298943Sluigi } 322398943Sluigi break; 322498943Sluigi 3225133600Scsjp case TOK_JAIL: 3226133600Scsjp NEED1("jail requires argument"); 3227133600Scsjp { 3228133600Scsjp char *end; 3229133600Scsjp int jid; 3230133600Scsjp 3231133600Scsjp cmd->opcode = O_JAIL; 3232133600Scsjp jid = (int)strtol(*av, &end, 0); 3233133600Scsjp if (jid < 0 || *end != '\0') 3234133600Scsjp errx(EX_DATAERR, "jail requires prison ID"); 3235135554Scsjp cmd32->d[0] = (uint32_t)jid; 3236135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 3237133600Scsjp ac--; av++; 3238133600Scsjp } 3239133600Scsjp break; 3240133600Scsjp 324198943Sluigi case TOK_ESTAB: 324298943Sluigi fill_cmd(cmd, O_ESTAB, 0, 0); 324398943Sluigi break; 324498943Sluigi 324598943Sluigi case TOK_SETUP: 324698943Sluigi fill_cmd(cmd, O_TCPFLAGS, 0, 324798943Sluigi (TH_SYN) | ( (TH_ACK) & 0xff) <<8 ); 324898943Sluigi break; 324998943Sluigi 3250136075Sgreen case TOK_TCPDATALEN: 3251136075Sgreen NEED1("tcpdatalen requires length"); 3252136075Sgreen if (strpbrk(*av, "-,")) { 3253136075Sgreen if (!add_ports(cmd, *av, 0, O_TCPDATALEN)) 3254136075Sgreen errx(EX_DATAERR, "invalid tcpdata len %s", *av); 3255136075Sgreen } else 3256136075Sgreen fill_cmd(cmd, O_TCPDATALEN, 0, 3257136075Sgreen strtoul(*av, NULL, 0)); 3258136075Sgreen ac--; av++; 3259136075Sgreen break; 3260136075Sgreen 326198943Sluigi case TOK_TCPOPTS: 326298943Sluigi NEED1("missing argument for tcpoptions"); 326398943Sluigi fill_flags(cmd, O_TCPOPTS, f_tcpopts, *av); 326498943Sluigi ac--; av++; 326598943Sluigi break; 326698943Sluigi 326798943Sluigi case TOK_TCPSEQ: 326898943Sluigi case TOK_TCPACK: 326998943Sluigi NEED1("tcpseq/tcpack requires argument"); 327098943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 327198943Sluigi cmd->opcode = (i == TOK_TCPSEQ) ? O_TCPSEQ : O_TCPACK; 327298943Sluigi cmd32->d[0] = htonl(strtoul(*av, NULL, 0)); 327398943Sluigi ac--; av++; 327498943Sluigi break; 327598943Sluigi 327698943Sluigi case TOK_TCPWIN: 327798943Sluigi NEED1("tcpwin requires length"); 327898943Sluigi fill_cmd(cmd, O_TCPWIN, 0, 327998943Sluigi htons(strtoul(*av, NULL, 0))); 328098943Sluigi ac--; av++; 328198943Sluigi break; 328298943Sluigi 328398943Sluigi case TOK_TCPFLAGS: 328498943Sluigi NEED1("missing argument for tcpflags"); 328598943Sluigi cmd->opcode = O_TCPFLAGS; 328698943Sluigi fill_flags(cmd, O_TCPFLAGS, f_tcpflags, *av); 328798943Sluigi ac--; av++; 328898943Sluigi break; 328998943Sluigi 329098943Sluigi case TOK_KEEPSTATE: 3291101641Sluigi if (open_par) 3292101641Sluigi errx(EX_USAGE, "keep-state cannot be part " 3293101641Sluigi "of an or block"); 329499909Sluigi if (have_state) 3295101116Sluigi errx(EX_USAGE, "only one of keep-state " 329699909Sluigi "and limit is allowed"); 3297101116Sluigi have_state = cmd; 329898943Sluigi fill_cmd(cmd, O_KEEP_STATE, 0, 0); 329998943Sluigi break; 330098943Sluigi 3301159636Soleg case TOK_LIMIT: { 3302159636Soleg ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 3303159636Soleg int val; 3304159636Soleg 3305101641Sluigi if (open_par) 3306159636Soleg errx(EX_USAGE, 3307159636Soleg "limit cannot be part of an or block"); 330899909Sluigi if (have_state) 3309168819Smaxim errx(EX_USAGE, "only one of keep-state and " 3310159636Soleg "limit is allowed"); 3311101116Sluigi have_state = cmd; 331298943Sluigi 331398943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_limit); 331498943Sluigi cmd->opcode = O_LIMIT; 3315159636Soleg c->limit_mask = c->conn_limit = 0; 331698943Sluigi 3317159636Soleg while (ac > 0) { 3318159636Soleg if ((val = match_token(limit_masks, *av)) <= 0) 331998943Sluigi break; 332098943Sluigi c->limit_mask |= val; 332198943Sluigi ac--; av++; 332298943Sluigi } 3323159636Soleg 332498943Sluigi if (c->limit_mask == 0) 3325159636Soleg errx(EX_USAGE, "limit: missing limit mask"); 3326159636Soleg 3327182823Srik GET_UINT_ARG(c->conn_limit, 1, IPFW_DEFAULT_RULE - 1, 3328182823Srik TOK_LIMIT, rule_options); 3329159636Soleg 333098943Sluigi ac--; av++; 333198943Sluigi break; 3332159636Soleg } 333398943Sluigi 3334102087Sluigi case TOK_PROTO: 3335102087Sluigi NEED1("missing protocol"); 3336145246Sbrooks if (add_proto(cmd, *av, &proto)) { 3337102087Sluigi ac--; av++; 3338102098Sluigi } else 3339116438Smaxim errx(EX_DATAERR, "invalid protocol ``%s''", 3340116438Smaxim *av); 3341102087Sluigi break; 3342106505Smaxim 3343102087Sluigi case TOK_SRCIP: 3344102087Sluigi NEED1("missing source IP"); 3345102087Sluigi if (add_srcip(cmd, *av)) { 3346102087Sluigi ac--; av++; 3347102087Sluigi } 3348102087Sluigi break; 3349102087Sluigi 3350102087Sluigi case TOK_DSTIP: 3351102087Sluigi NEED1("missing destination IP"); 3352102087Sluigi if (add_dstip(cmd, *av)) { 3353102087Sluigi ac--; av++; 3354102087Sluigi } 3355102087Sluigi break; 3356102087Sluigi 3357145246Sbrooks case TOK_SRCIP6: 3358145246Sbrooks NEED1("missing source IP6"); 3359145246Sbrooks if (add_srcip6(cmd, *av)) { 3360145246Sbrooks ac--; av++; 3361145246Sbrooks } 3362145246Sbrooks break; 3363145246Sbrooks 3364145246Sbrooks case TOK_DSTIP6: 3365145246Sbrooks NEED1("missing destination IP6"); 3366145246Sbrooks if (add_dstip6(cmd, *av)) { 3367145246Sbrooks ac--; av++; 3368145246Sbrooks } 3369145246Sbrooks break; 3370145246Sbrooks 3371102087Sluigi case TOK_SRCPORT: 3372102087Sluigi NEED1("missing source port"); 3373140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3374102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 3375102087Sluigi ac--; av++; 3376102087Sluigi } else 3377102087Sluigi errx(EX_DATAERR, "invalid source port %s", *av); 3378102087Sluigi break; 3379102087Sluigi 3380102087Sluigi case TOK_DSTPORT: 3381102087Sluigi NEED1("missing destination port"); 3382140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3383102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 3384102087Sluigi ac--; av++; 3385102087Sluigi } else 3386102087Sluigi errx(EX_DATAERR, "invalid destination port %s", 3387102087Sluigi *av); 3388102087Sluigi break; 3389102087Sluigi 3390102087Sluigi case TOK_MAC: 3391102087Sluigi if (add_mac(cmd, ac, av)) { 3392102087Sluigi ac -= 2; av += 2; 3393102087Sluigi } 3394102087Sluigi break; 3395102087Sluigi 3396102087Sluigi case TOK_MACTYPE: 3397102087Sluigi NEED1("missing mac type"); 3398102087Sluigi if (!add_mactype(cmd, ac, *av)) 3399116438Smaxim errx(EX_DATAERR, "invalid mac type %s", *av); 3400102087Sluigi ac--; av++; 3401102087Sluigi break; 3402102087Sluigi 3403112250Scjc case TOK_VERREVPATH: 3404112250Scjc fill_cmd(cmd, O_VERREVPATH, 0, 0); 3405112250Scjc break; 3406116919Sluigi 3407128575Sandre case TOK_VERSRCREACH: 3408128575Sandre fill_cmd(cmd, O_VERSRCREACH, 0, 0); 3409128575Sandre break; 3410128575Sandre 3411133387Sandre case TOK_ANTISPOOF: 3412133387Sandre fill_cmd(cmd, O_ANTISPOOF, 0, 0); 3413133387Sandre break; 3414133387Sandre 3415117241Sluigi case TOK_IPSEC: 3416117241Sluigi fill_cmd(cmd, O_IPSEC, 0, 0); 3417117241Sluigi break; 3418117241Sluigi 3419145246Sbrooks case TOK_IPV6: 3420145246Sbrooks fill_cmd(cmd, O_IP6, 0, 0); 3421145246Sbrooks break; 3422145246Sbrooks 3423146894Smlaier case TOK_IPV4: 3424146894Smlaier fill_cmd(cmd, O_IP4, 0, 0); 3425146894Smlaier break; 3426146894Smlaier 3427145246Sbrooks case TOK_EXT6HDR: 3428145246Sbrooks fill_ext6hdr( cmd, *av ); 3429145246Sbrooks ac--; av++; 3430145246Sbrooks break; 3431145246Sbrooks 3432145246Sbrooks case TOK_FLOWID: 3433145246Sbrooks if (proto != IPPROTO_IPV6 ) 3434145246Sbrooks errx( EX_USAGE, "flow-id filter is active " 3435145246Sbrooks "only for ipv6 protocol\n"); 3436145246Sbrooks fill_flow6( (ipfw_insn_u32 *) cmd, *av ); 3437145246Sbrooks ac--; av++; 3438145246Sbrooks break; 3439145246Sbrooks 3440117469Sluigi case TOK_COMMENT: 3441117469Sluigi fill_comment(cmd, ac, av); 3442117469Sluigi av += ac; 3443117469Sluigi ac = 0; 3444117469Sluigi break; 3445117469Sluigi 3446158879Soleg case TOK_TAGGED: 3447159636Soleg if (ac > 0 && strpbrk(*av, "-,")) { 3448158879Soleg if (!add_ports(cmd, *av, 0, O_TAGGED)) 3449159636Soleg errx(EX_DATAERR, "tagged: invalid tag" 3450159636Soleg " list: %s", *av); 3451158879Soleg } 3452159636Soleg else { 3453159636Soleg uint16_t tag; 3454159636Soleg 3455182823Srik GET_UINT_ARG(tag, 1, IPFW_DEFAULT_RULE - 1, 3456182823Srik TOK_TAGGED, rule_options); 3457159636Soleg fill_cmd(cmd, O_TAGGED, 0, tag); 3458159636Soleg } 3459158879Soleg ac--; av++; 3460158879Soleg break; 3461158879Soleg 3462178888Sjulian case TOK_FIB: 3463178888Sjulian NEED1("fib requires fib number"); 3464178888Sjulian fill_cmd(cmd, O_FIB, 0, strtoul(*av, NULL, 0)); 3465178888Sjulian ac--; av++; 3466178888Sjulian break; 3467178888Sjulian 346898943Sluigi default: 346998943Sluigi errx(EX_USAGE, "unrecognised option [%d] %s\n", i, s); 347098943Sluigi } 347198943Sluigi if (F_LEN(cmd) > 0) { /* prepare to advance */ 347298943Sluigi prev = cmd; 347398943Sluigi cmd = next_cmd(cmd); 347498943Sluigi } 347598943Sluigi } 347698943Sluigi 347798943Sluigidone: 347898943Sluigi /* 347998943Sluigi * Now copy stuff into the rule. 348098943Sluigi * If we have a keep-state option, the first instruction 348198943Sluigi * must be a PROBE_STATE (which is generated here). 348298943Sluigi * If we have a LOG option, it was stored as the first command, 348398943Sluigi * and now must be moved to the top of the action part. 348498943Sluigi */ 348598943Sluigi dst = (ipfw_insn *)rule->cmd; 348698943Sluigi 348798943Sluigi /* 3488107289Sluigi * First thing to write into the command stream is the match probability. 3489107289Sluigi */ 3490107289Sluigi if (match_prob != 1) { /* 1 means always match */ 3491107289Sluigi dst->opcode = O_PROB; 3492107289Sluigi dst->len = 2; 3493107289Sluigi *((int32_t *)(dst+1)) = (int32_t)(match_prob * 0x7fffffff); 3494107289Sluigi dst += dst->len; 3495107289Sluigi } 3496107289Sluigi 3497107289Sluigi /* 349898943Sluigi * generate O_PROBE_STATE if necessary 349998943Sluigi */ 3500101116Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 350198943Sluigi fill_cmd(dst, O_PROBE_STATE, 0, 0); 350298943Sluigi dst = next_cmd(dst); 350398943Sluigi } 3504158879Soleg 3505158879Soleg /* copy all commands but O_LOG, O_KEEP_STATE, O_LIMIT, O_ALTQ, O_TAG */ 350698943Sluigi for (src = (ipfw_insn *)cmdbuf; src != cmd; src += i) { 350798943Sluigi i = F_LEN(src); 350898943Sluigi 3509101116Sluigi switch (src->opcode) { 3510101116Sluigi case O_LOG: 3511101116Sluigi case O_KEEP_STATE: 3512101116Sluigi case O_LIMIT: 3513136071Sgreen case O_ALTQ: 3514158879Soleg case O_TAG: 3515101116Sluigi break; 3516101116Sluigi default: 3517117328Sluigi bcopy(src, dst, i * sizeof(uint32_t)); 351898943Sluigi dst += i; 351998943Sluigi } 352098943Sluigi } 352198943Sluigi 352298943Sluigi /* 3523101116Sluigi * put back the have_state command as last opcode 3524101116Sluigi */ 3525101295Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 3526101116Sluigi i = F_LEN(have_state); 3527117328Sluigi bcopy(have_state, dst, i * sizeof(uint32_t)); 3528101116Sluigi dst += i; 3529101116Sluigi } 3530101116Sluigi /* 353198943Sluigi * start action section 353298943Sluigi */ 353398943Sluigi rule->act_ofs = dst - rule->cmd; 353498943Sluigi 3535158879Soleg /* put back O_LOG, O_ALTQ, O_TAG if necessary */ 3536136071Sgreen if (have_log) { 3537136071Sgreen i = F_LEN(have_log); 3538136071Sgreen bcopy(have_log, dst, i * sizeof(uint32_t)); 353998943Sluigi dst += i; 354098943Sluigi } 3541136071Sgreen if (have_altq) { 3542136071Sgreen i = F_LEN(have_altq); 3543136071Sgreen bcopy(have_altq, dst, i * sizeof(uint32_t)); 3544136071Sgreen dst += i; 3545136071Sgreen } 3546158879Soleg if (have_tag) { 3547158879Soleg i = F_LEN(have_tag); 3548158879Soleg bcopy(have_tag, dst, i * sizeof(uint32_t)); 3549158879Soleg dst += i; 3550158879Soleg } 355198943Sluigi /* 355298943Sluigi * copy all other actions 355398943Sluigi */ 355498943Sluigi for (src = (ipfw_insn *)actbuf; src != action; src += i) { 355598943Sluigi i = F_LEN(src); 3556117328Sluigi bcopy(src, dst, i * sizeof(uint32_t)); 355798943Sluigi dst += i; 355898943Sluigi } 355998943Sluigi 3560117328Sluigi rule->cmd_len = (uint32_t *)dst - (uint32_t *)(rule->cmd); 3561117469Sluigi i = (char *)dst - (char *)rule; 3562119740Stmm if (do_cmd(IP_FW_ADD, rule, (uintptr_t)&i) == -1) 356398943Sluigi err(EX_UNAVAILABLE, "getsockopt(%s)", "IP_FW_ADD"); 3564187764Sluigi if (!co.do_quiet) 3565117469Sluigi show_ipfw(rule, 0, 0); 356698943Sluigi} 356798943Sluigi 3568187767Sluigi/* 3569187767Sluigi * clear the counters or the log counters. 3570187767Sluigi */ 3571187767Sluigivoid 3572187767Sluigiipfw_zero(int ac, char *av[], int optname /* 0 = IP_FW_ZERO, 1 = IP_FW_RESETLOG */) 357398943Sluigi{ 3574170923Smaxim uint32_t arg, saved_arg; 357598943Sluigi int failed = EX_OK; 3576170923Smaxim char const *errstr; 3577187767Sluigi char const *name = optname ? "RESETLOG" : "ZERO"; 357898943Sluigi 3579187767Sluigi optname = optname ? IP_FW_RESETLOG : IP_FW_ZERO; 3580187767Sluigi 358198943Sluigi av++; ac--; 358298943Sluigi 358398943Sluigi if (!ac) { 358498943Sluigi /* clear all entries */ 3585117328Sluigi if (do_cmd(optname, NULL, 0) < 0) 3586117328Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_FW_%s)", name); 3587187764Sluigi if (!co.do_quiet) 3588117328Sluigi printf("%s.\n", optname == IP_FW_ZERO ? 3589117328Sluigi "Accounting cleared":"Logging counts reset"); 359098943Sluigi 359198943Sluigi return; 359298943Sluigi } 359398943Sluigi 359498943Sluigi while (ac) { 359598943Sluigi /* Rule number */ 359698943Sluigi if (isdigit(**av)) { 3597170923Smaxim arg = strtonum(*av, 0, 0xffff, &errstr); 3598170923Smaxim if (errstr) 3599170923Smaxim errx(EX_DATAERR, 3600170923Smaxim "invalid rule number %s\n", *av); 3601170923Smaxim saved_arg = arg; 3602187764Sluigi if (co.use_set) 3603187764Sluigi arg |= (1 << 24) | ((co.use_set - 1) << 16); 360498943Sluigi av++; 360598943Sluigi ac--; 3606170923Smaxim if (do_cmd(optname, &arg, sizeof(arg))) { 3607117328Sluigi warn("rule %u: setsockopt(IP_FW_%s)", 3608170923Smaxim saved_arg, name); 360998943Sluigi failed = EX_UNAVAILABLE; 3610187764Sluigi } else if (!co.do_quiet) 3611170923Smaxim printf("Entry %d %s.\n", saved_arg, 3612117328Sluigi optname == IP_FW_ZERO ? 3613117328Sluigi "cleared" : "logging count reset"); 361498943Sluigi } else { 361598943Sluigi errx(EX_USAGE, "invalid rule number ``%s''", *av); 361698943Sluigi } 361798943Sluigi } 361898943Sluigi if (failed != EX_OK) 361998943Sluigi exit(failed); 362098943Sluigi} 362198943Sluigi 3622187767Sluigivoid 3623187767Sluigiipfw_flush(int force) 362498943Sluigi{ 3625187764Sluigi int cmd = co.do_pipe ? IP_DUMMYNET_FLUSH : IP_FW_FLUSH; 362698943Sluigi 3627187764Sluigi if (!force && !co.do_quiet) { /* need to ask user */ 362898943Sluigi int c; 362998943Sluigi 363098943Sluigi printf("Are you sure? [yn] "); 363198943Sluigi fflush(stdout); 363298943Sluigi do { 363398943Sluigi c = toupper(getc(stdin)); 363498943Sluigi while (c != '\n' && getc(stdin) != '\n') 363598943Sluigi if (feof(stdin)) 363698943Sluigi return; /* and do not flush */ 363798943Sluigi } while (c != 'Y' && c != 'N'); 363898943Sluigi printf("\n"); 363998943Sluigi if (c == 'N') /* user said no */ 364098943Sluigi return; 364198943Sluigi } 3642170923Smaxim /* `ipfw set N flush` - is the same that `ipfw delete set N` */ 3643187764Sluigi if (co.use_set) { 3644187764Sluigi uint32_t arg = ((co.use_set - 1) & 0xffff) | (1 << 24); 3645170923Smaxim if (do_cmd(IP_FW_DEL, &arg, sizeof(arg)) < 0) 3646170923Smaxim err(EX_UNAVAILABLE, "setsockopt(IP_FW_DEL)"); 3647170923Smaxim } else if (do_cmd(cmd, NULL, 0) < 0) 364898943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_%s_FLUSH)", 3649187764Sluigi co.do_pipe ? "DUMMYNET" : "FW"); 3650187764Sluigi if (!co.do_quiet) 3651187764Sluigi printf("Flushed all %s.\n", co.do_pipe ? "pipes" : "rules"); 365298943Sluigi} 365398943Sluigi 3654117544Sluigi 3655183407Srikstatic void table_list(ipfw_table_entry ent, int need_header); 3656183228Srik 3657117544Sluigi/* 3658130281Sru * This one handles all table-related commands 3659130281Sru * ipfw table N add addr[/masklen] [value] 3660130281Sru * ipfw table N delete addr[/masklen] 3661183407Srik * ipfw table {N | all} flush 3662183407Srik * ipfw table {N | all} list 3663130281Sru */ 3664187767Sluigivoid 3665187767Sluigiipfw_table_handler(int ac, char *av[]) 3666130281Sru{ 3667130281Sru ipfw_table_entry ent; 3668130281Sru int do_add; 3669183407Srik int is_all; 3670183241Srik size_t len; 3671130281Sru char *p; 3672183407Srik uint32_t a; 3673183241Srik uint32_t tables_max; 3674130281Sru 3675183263Skeramida len = sizeof(tables_max); 3676183241Srik if (sysctlbyname("net.inet.ip.fw.tables_max", &tables_max, &len, 3677183241Srik NULL, 0) == -1) { 3678183241Srik#ifdef IPFW_TABLES_MAX 3679183241Srik warn("Warn: Failed to get the max tables number via sysctl. " 3680183241Srik "Using the compiled in defaults. \nThe reason was"); 3681183241Srik tables_max = IPFW_TABLES_MAX; 3682183241Srik#else 3683183241Srik errx(1, "Failed sysctlbyname(\"net.inet.ip.fw.tables_max\")"); 3684183241Srik#endif 3685183241Srik } 3686183241Srik 3687130281Sru ac--; av++; 3688130281Sru if (ac && isdigit(**av)) { 3689130281Sru ent.tbl = atoi(*av); 3690183407Srik is_all = 0; 3691130281Sru ac--; av++; 3692183407Srik } else if (ac && _substrcmp(*av, "all") == 0) { 3693183407Srik ent.tbl = 0; 3694183407Srik is_all = 1; 3695183407Srik ac--; av++; 3696130281Sru } else 3697183407Srik errx(EX_USAGE, "table number or 'all' keyword required"); 3698183241Srik if (ent.tbl >= tables_max) 3699183241Srik errx(EX_USAGE, "The table number exceeds the maximum allowed " 3700183241Srik "value (%d)", tables_max - 1); 3701130281Sru NEED1("table needs command"); 3702183407Srik if (is_all && _substrcmp(*av, "list") != 0 3703183407Srik && _substrcmp(*av, "flush") != 0) 3704183407Srik errx(EX_USAGE, "table number required"); 3705183407Srik 3706140271Sbrooks if (_substrcmp(*av, "add") == 0 || 3707140271Sbrooks _substrcmp(*av, "delete") == 0) { 3708130281Sru do_add = **av == 'a'; 3709130281Sru ac--; av++; 3710130281Sru if (!ac) 3711130281Sru errx(EX_USAGE, "IP address required"); 3712130281Sru p = strchr(*av, '/'); 3713130281Sru if (p) { 3714130281Sru *p++ = '\0'; 3715130281Sru ent.masklen = atoi(p); 3716130281Sru if (ent.masklen > 32) 3717130281Sru errx(EX_DATAERR, "bad width ``%s''", p); 3718130281Sru } else 3719130281Sru ent.masklen = 32; 3720130281Sru if (lookup_host(*av, (struct in_addr *)&ent.addr) != 0) 3721130298Sru errx(EX_NOHOST, "hostname ``%s'' unknown", *av); 3722130281Sru ac--; av++; 3723161424Sjulian if (do_add && ac) { 3724161424Sjulian unsigned int tval; 3725161424Sjulian /* isdigit is a bit of a hack here.. */ 3726161424Sjulian if (strchr(*av, (int)'.') == NULL && isdigit(**av)) { 3727161424Sjulian ent.value = strtoul(*av, NULL, 0); 3728161424Sjulian } else { 3729161424Sjulian if (lookup_host(*av, (struct in_addr *)&tval) == 0) { 3730161424Sjulian /* The value must be stored in host order * 3731161424Sjulian * so that the values < 65k can be distinguished */ 3732161424Sjulian ent.value = ntohl(tval); 3733161424Sjulian } else { 3734161424Sjulian errx(EX_NOHOST, "hostname ``%s'' unknown", *av); 3735161424Sjulian } 3736161424Sjulian } 3737161424Sjulian } else 3738130281Sru ent.value = 0; 3739130281Sru if (do_cmd(do_add ? IP_FW_TABLE_ADD : IP_FW_TABLE_DEL, 3740157335Sjulian &ent, sizeof(ent)) < 0) { 3741155639Sjulian /* If running silent, don't bomb out on these errors. */ 3742187764Sluigi if (!(co.do_quiet && (errno == (do_add ? EEXIST : ESRCH)))) 3743155639Sjulian err(EX_OSERR, "setsockopt(IP_FW_TABLE_%s)", 3744155639Sjulian do_add ? "ADD" : "DEL"); 3745155639Sjulian /* In silent mode, react to a failed add by deleting */ 3746157332Sjulian if (do_add) { 3747155639Sjulian do_cmd(IP_FW_TABLE_DEL, &ent, sizeof(ent)); 3748155639Sjulian if (do_cmd(IP_FW_TABLE_ADD, 3749155639Sjulian &ent, sizeof(ent)) < 0) 3750155639Sjulian err(EX_OSERR, 3751155639Sjulian "setsockopt(IP_FW_TABLE_ADD)"); 3752157332Sjulian } 3753157335Sjulian } 3754140271Sbrooks } else if (_substrcmp(*av, "flush") == 0) { 3755183407Srik a = is_all ? tables_max : (ent.tbl + 1); 3756183407Srik do { 3757183407Srik if (do_cmd(IP_FW_TABLE_FLUSH, &ent.tbl, 3758183407Srik sizeof(ent.tbl)) < 0) 3759183407Srik err(EX_OSERR, "setsockopt(IP_FW_TABLE_FLUSH)"); 3760183407Srik } while (++ent.tbl < a); 3761140271Sbrooks } else if (_substrcmp(*av, "list") == 0) { 3762183407Srik a = is_all ? tables_max : (ent.tbl + 1); 3763183407Srik do { 3764183415Srik table_list(ent, is_all); 3765183407Srik } while (++ent.tbl < a); 3766183228Srik } else 3767183228Srik errx(EX_USAGE, "invalid table command %s", *av); 3768183228Srik} 3769183205Srik 3770183228Srikstatic void 3771183407Sriktable_list(ipfw_table_entry ent, int need_header) 3772183228Srik{ 3773183228Srik ipfw_table *tbl; 3774183228Srik socklen_t l; 3775183228Srik uint32_t a; 3776183205Srik 3777183228Srik a = ent.tbl; 3778183228Srik l = sizeof(a); 3779183228Srik if (do_cmd(IP_FW_TABLE_GETSIZE, &a, (uintptr_t)&l) < 0) 3780183228Srik err(EX_OSERR, "getsockopt(IP_FW_TABLE_GETSIZE)"); 3781183228Srik 3782183228Srik /* If a is zero we have nothing to do, the table is empty. */ 3783183228Srik if (a == 0) 3784183228Srik return; 3785183228Srik 3786183228Srik l = sizeof(*tbl) + a * sizeof(ipfw_table_entry); 3787187716Sluigi tbl = safe_calloc(1, l); 3788183228Srik tbl->tbl = ent.tbl; 3789183228Srik if (do_cmd(IP_FW_TABLE_LIST, tbl, (uintptr_t)&l) < 0) 3790183228Srik err(EX_OSERR, "getsockopt(IP_FW_TABLE_LIST)"); 3791183407Srik if (tbl->cnt && need_header) 3792183407Srik printf("---table(%d)---\n", tbl->tbl); 3793183228Srik for (a = 0; a < tbl->cnt; a++) { 3794183228Srik unsigned int tval; 3795183228Srik tval = tbl->ent[a].value; 3796187764Sluigi if (co.do_value_as_ip) { 3797183228Srik char tbuf[128]; 3798183228Srik strncpy(tbuf, inet_ntoa(*(struct in_addr *) 3799161456Sjulian &tbl->ent[a].addr), 127); 3800183228Srik /* inet_ntoa expects network order */ 3801183228Srik tval = htonl(tval); 3802183228Srik printf("%s/%u %s\n", tbuf, tbl->ent[a].masklen, 3803183228Srik inet_ntoa(*(struct in_addr *)&tval)); 3804183228Srik } else { 3805183228Srik printf("%s/%u %u\n", 3806183228Srik inet_ntoa(*(struct in_addr *)&tbl->ent[a].addr), 3807183228Srik tbl->ent[a].masklen, tval); 3808130281Sru } 3809183228Srik } 3810183228Srik free(tbl); 3811130281Sru} 3812