ipfw2.c revision 190633
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 190633 2009-04-01 20:23:47Z piso $ 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 }, 214190633Spiso { "reass", TOK_REASS }, 215178888Sjulian { "setfib", TOK_SETFIB }, 216117328Sluigi { NULL, 0 } /* terminator */ 21798943Sluigi}; 21898943Sluigi 219187769Sluigistatic struct _s_x rule_action_params[] = { 220136071Sgreen { "altq", TOK_ALTQ }, 221136071Sgreen { "log", TOK_LOG }, 222158879Soleg { "tag", TOK_TAG }, 223158879Soleg { "untag", TOK_UNTAG }, 224136071Sgreen { NULL, 0 } /* terminator */ 225136071Sgreen}; 226136071Sgreen 227187769Sluigistatic struct _s_x rule_options[] = { 228158879Soleg { "tagged", TOK_TAGGED }, 22998943Sluigi { "uid", TOK_UID }, 23098943Sluigi { "gid", TOK_GID }, 231133600Scsjp { "jail", TOK_JAIL }, 23298943Sluigi { "in", TOK_IN }, 23398943Sluigi { "limit", TOK_LIMIT }, 23498943Sluigi { "keep-state", TOK_KEEPSTATE }, 23598943Sluigi { "bridged", TOK_LAYER2 }, 23698943Sluigi { "layer2", TOK_LAYER2 }, 23798943Sluigi { "out", TOK_OUT }, 238136073Sgreen { "diverted", TOK_DIVERTED }, 239136073Sgreen { "diverted-loopback", TOK_DIVERTEDLOOPBACK }, 240136073Sgreen { "diverted-output", TOK_DIVERTEDOUTPUT }, 24198943Sluigi { "xmit", TOK_XMIT }, 24298943Sluigi { "recv", TOK_RECV }, 24398943Sluigi { "via", TOK_VIA }, 24498943Sluigi { "fragment", TOK_FRAG }, 24598943Sluigi { "frag", TOK_FRAG }, 246178888Sjulian { "fib", TOK_FIB }, 24798943Sluigi { "ipoptions", TOK_IPOPTS }, 24898943Sluigi { "ipopts", TOK_IPOPTS }, 24998943Sluigi { "iplen", TOK_IPLEN }, 25098943Sluigi { "ipid", TOK_IPID }, 25198943Sluigi { "ipprecedence", TOK_IPPRECEDENCE }, 25298943Sluigi { "iptos", TOK_IPTOS }, 25398943Sluigi { "ipttl", TOK_IPTTL }, 25498943Sluigi { "ipversion", TOK_IPVER }, 25598943Sluigi { "ipver", TOK_IPVER }, 25698943Sluigi { "estab", TOK_ESTAB }, 25798943Sluigi { "established", TOK_ESTAB }, 25898943Sluigi { "setup", TOK_SETUP }, 259136075Sgreen { "tcpdatalen", TOK_TCPDATALEN }, 26098943Sluigi { "tcpflags", TOK_TCPFLAGS }, 26198943Sluigi { "tcpflgs", TOK_TCPFLAGS }, 26298943Sluigi { "tcpoptions", TOK_TCPOPTS }, 26398943Sluigi { "tcpopts", TOK_TCPOPTS }, 26498943Sluigi { "tcpseq", TOK_TCPSEQ }, 26598943Sluigi { "tcpack", TOK_TCPACK }, 26698943Sluigi { "tcpwin", TOK_TCPWIN }, 26799909Sluigi { "icmptype", TOK_ICMPTYPES }, 26898943Sluigi { "icmptypes", TOK_ICMPTYPES }, 269102087Sluigi { "dst-ip", TOK_DSTIP }, 270102087Sluigi { "src-ip", TOK_SRCIP }, 271102087Sluigi { "dst-port", TOK_DSTPORT }, 272102087Sluigi { "src-port", TOK_SRCPORT }, 273102087Sluigi { "proto", TOK_PROTO }, 274102087Sluigi { "MAC", TOK_MAC }, 275102087Sluigi { "mac", TOK_MAC }, 276102087Sluigi { "mac-type", TOK_MACTYPE }, 277112250Scjc { "verrevpath", TOK_VERREVPATH }, 278128575Sandre { "versrcreach", TOK_VERSRCREACH }, 279133387Sandre { "antispoof", TOK_ANTISPOOF }, 280117241Sluigi { "ipsec", TOK_IPSEC }, 281145246Sbrooks { "icmp6type", TOK_ICMP6TYPES }, 282145246Sbrooks { "icmp6types", TOK_ICMP6TYPES }, 283145246Sbrooks { "ext6hdr", TOK_EXT6HDR}, 284145246Sbrooks { "flow-id", TOK_FLOWID}, 285145246Sbrooks { "ipv6", TOK_IPV6}, 286145246Sbrooks { "ip6", TOK_IPV6}, 287146894Smlaier { "ipv4", TOK_IPV4}, 288146894Smlaier { "ip4", TOK_IPV4}, 289145246Sbrooks { "dst-ipv6", TOK_DSTIP6}, 290145246Sbrooks { "dst-ip6", TOK_DSTIP6}, 291145246Sbrooks { "src-ipv6", TOK_SRCIP6}, 292145246Sbrooks { "src-ip6", TOK_SRCIP6}, 293117469Sluigi { "//", TOK_COMMENT }, 29498943Sluigi 29598943Sluigi { "not", TOK_NOT }, /* pseudo option */ 29698943Sluigi { "!", /* escape ? */ TOK_NOT }, /* pseudo option */ 29798943Sluigi { "or", TOK_OR }, /* pseudo option */ 29898943Sluigi { "|", /* escape */ TOK_OR }, /* pseudo option */ 299101641Sluigi { "{", TOK_STARTBRACE }, /* pseudo option */ 300101641Sluigi { "(", TOK_STARTBRACE }, /* pseudo option */ 301101641Sluigi { "}", TOK_ENDBRACE }, /* pseudo option */ 302101641Sluigi { ")", TOK_ENDBRACE }, /* pseudo option */ 303117328Sluigi { NULL, 0 } /* terminator */ 30498943Sluigi}; 30598943Sluigi 306187787Sluigi/* 307187787Sluigi * The following is used to generate a printable argument for 308187787Sluigi * 64-bit numbers, irrespective of platform alignment and bit size. 309187787Sluigi * Because all the printf in this program use %llu as a format, 310187787Sluigi * we just return an unsigned long long, which is larger than 311187787Sluigi * we need in certain cases, but saves the hassle of using 312187787Sluigi * PRIu64 as a format specifier. 313187787Sluigi * We don't care about inlining, this is not performance critical code. 314187787Sluigi */ 315187787Sluigiunsigned long long 316187787Sluigialign_uint64(const uint64_t *pll) 317187787Sluigi{ 318117328Sluigi uint64_t ret; 319115793Sticso 320115793Sticso bcopy (pll, &ret, sizeof(ret)); 321115793Sticso return ret; 322129389Sstefanf} 323115793Sticso 324187767Sluigivoid * 325187716Sluigisafe_calloc(size_t number, size_t size) 326187716Sluigi{ 327187716Sluigi void *ret = calloc(number, size); 328187716Sluigi 329187716Sluigi if (ret == NULL) 330187716Sluigi err(EX_OSERR, "calloc"); 331187716Sluigi return ret; 332187716Sluigi} 333187716Sluigi 334187767Sluigivoid * 335187716Sluigisafe_realloc(void *ptr, size_t size) 336187716Sluigi{ 337187716Sluigi void *ret = realloc(ptr, size); 338187716Sluigi 339187716Sluigi if (ret == NULL) 340187716Sluigi err(EX_OSERR, "realloc"); 341187716Sluigi return ret; 342187716Sluigi} 343187716Sluigi 344117328Sluigi/* 345117328Sluigi * conditionally runs the command. 346117328Sluigi */ 347187769Sluigiint 348119740Stmmdo_cmd(int optname, void *optval, uintptr_t optlen) 349117328Sluigi{ 350117328Sluigi static int s = -1; /* the socket */ 351117328Sluigi int i; 352117577Sluigi 353187764Sluigi if (co.test_only) 354117328Sluigi return 0; 355117328Sluigi 356117328Sluigi if (s == -1) 357117328Sluigi s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); 358117328Sluigi if (s < 0) 359117328Sluigi err(EX_UNAVAILABLE, "socket"); 360117328Sluigi 361117328Sluigi if (optname == IP_FW_GET || optname == IP_DUMMYNET_GET || 362130281Sru optname == IP_FW_ADD || optname == IP_FW_TABLE_LIST || 363165648Spiso optname == IP_FW_TABLE_GETSIZE || 364165648Spiso optname == IP_FW_NAT_GET_CONFIG || 365165648Spiso optname == IP_FW_NAT_GET_LOG) 366117328Sluigi i = getsockopt(s, IPPROTO_IP, optname, optval, 367117328Sluigi (socklen_t *)optlen); 368117328Sluigi else 369117328Sluigi i = setsockopt(s, IPPROTO_IP, optname, optval, optlen); 370117328Sluigi return i; 371117328Sluigi} 372117328Sluigi 37398943Sluigi/** 37498943Sluigi * match_token takes a table and a string, returns the value associated 375117328Sluigi * with the string (-1 in case of failure). 37698943Sluigi */ 377187769Sluigiint 37898943Sluigimatch_token(struct _s_x *table, char *string) 37998943Sluigi{ 38098943Sluigi struct _s_x *pt; 381117469Sluigi uint i = strlen(string); 38298943Sluigi 38398943Sluigi for (pt = table ; i && pt->s != NULL ; pt++) 38498943Sluigi if (strlen(pt->s) == i && !bcmp(string, pt->s, i)) 38598943Sluigi return pt->x; 38698943Sluigi return -1; 387129389Sstefanf} 38898943Sluigi 389117328Sluigi/** 390117328Sluigi * match_value takes a table and a value, returns the string associated 391117328Sluigi * with the value (NULL in case of failure). 392117328Sluigi */ 393187770Sluigichar const * 394117469Sluigimatch_value(struct _s_x *p, int value) 39598943Sluigi{ 39698943Sluigi for (; p->s != NULL; p++) 39798943Sluigi if (p->x == value) 39898943Sluigi return p->s; 39998943Sluigi return NULL; 40098943Sluigi} 40198943Sluigi 40298943Sluigi/* 403140271Sbrooks * _substrcmp takes two strings and returns 1 if they do not match, 404140271Sbrooks * and 0 if they match exactly or the first string is a sub-string 405140271Sbrooks * of the second. A warning is printed to stderr in the case that the 406140271Sbrooks * first string is a sub-string of the second. 407140271Sbrooks * 408140271Sbrooks * This function will be removed in the future through the usual 409140271Sbrooks * deprecation process. 410140271Sbrooks */ 411187767Sluigiint 412140271Sbrooks_substrcmp(const char *str1, const char* str2) 413140271Sbrooks{ 414140271Sbrooks 415140271Sbrooks if (strncmp(str1, str2, strlen(str1)) != 0) 416140271Sbrooks return 1; 417140271Sbrooks 418140271Sbrooks if (strlen(str1) != strlen(str2)) 419140271Sbrooks warnx("DEPRECATED: '%s' matched '%s' as a sub-string", 420140271Sbrooks str1, str2); 421140271Sbrooks return 0; 422140271Sbrooks} 423140271Sbrooks 424140271Sbrooks/* 425140271Sbrooks * _substrcmp2 takes three strings and returns 1 if the first two do not match, 426140271Sbrooks * and 0 if they match exactly or the second string is a sub-string 427140271Sbrooks * of the first. A warning is printed to stderr in the case that the 428140271Sbrooks * first string does not match the third. 429140271Sbrooks * 430140271Sbrooks * This function exists to warn about the bizzare construction 431140271Sbrooks * strncmp(str, "by", 2) which is used to allow people to use a shotcut 432140271Sbrooks * for "bytes". The problem is that in addition to accepting "by", 433140271Sbrooks * "byt", "byte", and "bytes", it also excepts "by_rabid_dogs" and any 434140271Sbrooks * other string beginning with "by". 435140271Sbrooks * 436140271Sbrooks * This function will be removed in the future through the usual 437140271Sbrooks * deprecation process. 438140271Sbrooks */ 439187769Sluigiint 440140271Sbrooks_substrcmp2(const char *str1, const char* str2, const char* str3) 441140271Sbrooks{ 442140271Sbrooks 443140271Sbrooks if (strncmp(str1, str2, strlen(str2)) != 0) 444140271Sbrooks return 1; 445140271Sbrooks 446140271Sbrooks if (strcmp(str1, str3) != 0) 447140271Sbrooks warnx("DEPRECATED: '%s' matched '%s'", 448140271Sbrooks str1, str3); 449140271Sbrooks return 0; 450140271Sbrooks} 451140271Sbrooks 452140271Sbrooks/* 45398943Sluigi * prints one port, symbolic or numeric 45498943Sluigi */ 45598943Sluigistatic void 456117328Sluigiprint_port(int proto, uint16_t port) 45798943Sluigi{ 45898943Sluigi 45998943Sluigi if (proto == IPPROTO_ETHERTYPE) { 460117469Sluigi char const *s; 46198943Sluigi 462187764Sluigi if (co.do_resolv && (s = match_value(ether_types, port)) ) 46398943Sluigi printf("%s", s); 46498943Sluigi else 46598943Sluigi printf("0x%04x", port); 46698943Sluigi } else { 46798943Sluigi struct servent *se = NULL; 468187764Sluigi if (co.do_resolv) { 46998943Sluigi struct protoent *pe = getprotobynumber(proto); 47098943Sluigi 47198943Sluigi se = getservbyport(htons(port), pe ? pe->p_name : NULL); 47298943Sluigi } 47398943Sluigi if (se) 47498943Sluigi printf("%s", se->s_name); 47598943Sluigi else 47698943Sluigi printf("%d", port); 47798943Sluigi } 47898943Sluigi} 47998943Sluigi 480187769Sluigistatic struct _s_x _port_name[] = { 481117328Sluigi {"dst-port", O_IP_DSTPORT}, 482117328Sluigi {"src-port", O_IP_SRCPORT}, 483117328Sluigi {"ipid", O_IPID}, 484117328Sluigi {"iplen", O_IPLEN}, 485117328Sluigi {"ipttl", O_IPTTL}, 486117328Sluigi {"mac-type", O_MAC_TYPE}, 487136075Sgreen {"tcpdatalen", O_TCPDATALEN}, 488158879Soleg {"tagged", O_TAGGED}, 489117328Sluigi {NULL, 0} 490117328Sluigi}; 491117328Sluigi 49298943Sluigi/* 493117328Sluigi * Print the values in a list 16-bit items of the types above. 49498943Sluigi * XXX todo: add support for mask. 49598943Sluigi */ 49698943Sluigistatic void 497102087Sluigiprint_newports(ipfw_insn_u16 *cmd, int proto, int opcode) 49898943Sluigi{ 499117328Sluigi uint16_t *p = cmd->ports; 50098943Sluigi int i; 501117469Sluigi char const *sep; 50298943Sluigi 503116690Sluigi if (opcode != 0) { 504117328Sluigi sep = match_value(_port_name, opcode); 505117328Sluigi if (sep == NULL) 506116690Sluigi sep = "???"; 507116690Sluigi printf (" %s", sep); 508116690Sluigi } 509116690Sluigi sep = " "; 51098943Sluigi for (i = F_LEN((ipfw_insn *)cmd) - 1; i > 0; i--, p += 2) { 51198943Sluigi printf(sep); 51298943Sluigi print_port(proto, p[0]); 51398943Sluigi if (p[0] != p[1]) { 51498943Sluigi printf("-"); 51598943Sluigi print_port(proto, p[1]); 51698943Sluigi } 51798943Sluigi sep = ","; 51898943Sluigi } 51998943Sluigi} 52098943Sluigi 52198943Sluigi/* 52298943Sluigi * Like strtol, but also translates service names into port numbers 52398943Sluigi * for some protocols. 52498943Sluigi * In particular: 52598943Sluigi * proto == -1 disables the protocol check; 52698943Sluigi * proto == IPPROTO_ETHERTYPE looks up an internal table 52798943Sluigi * proto == <some value in /etc/protocols> matches the values there. 528101628Sluigi * Returns *end == s in case the parameter is not found. 52998943Sluigi */ 53098943Sluigistatic int 53198943Sluigistrtoport(char *s, char **end, int base, int proto) 53298943Sluigi{ 533101628Sluigi char *p, *buf; 534101628Sluigi char *s1; 53598943Sluigi int i; 53698943Sluigi 537101628Sluigi *end = s; /* default - not found */ 538117577Sluigi if (*s == '\0') 539101628Sluigi return 0; /* not found */ 540106505Smaxim 54198943Sluigi if (isdigit(*s)) 54298943Sluigi return strtol(s, end, base); 54398943Sluigi 54498943Sluigi /* 545101628Sluigi * find separator. '\\' escapes the next char. 54698943Sluigi */ 547101628Sluigi for (s1 = s; *s1 && (isalnum(*s1) || *s1 == '\\') ; s1++) 548101628Sluigi if (*s1 == '\\' && s1[1] != '\0') 549101628Sluigi s1++; 55098943Sluigi 551187716Sluigi buf = safe_calloc(s1 - s + 1, 1); 552101628Sluigi 553101628Sluigi /* 554101628Sluigi * copy into a buffer skipping backslashes 555101628Sluigi */ 556101628Sluigi for (p = s, i = 0; p != s1 ; p++) 557117577Sluigi if (*p != '\\') 558101628Sluigi buf[i++] = *p; 559101628Sluigi buf[i++] = '\0'; 560101628Sluigi 56198943Sluigi if (proto == IPPROTO_ETHERTYPE) { 562101628Sluigi i = match_token(ether_types, buf); 563101628Sluigi free(buf); 564101628Sluigi if (i != -1) { /* found */ 56598943Sluigi *end = s1; 56698943Sluigi return i; 56798943Sluigi } 56898943Sluigi } else { 56998943Sluigi struct protoent *pe = NULL; 57098943Sluigi struct servent *se; 57198943Sluigi 57298943Sluigi if (proto != 0) 57398943Sluigi pe = getprotobynumber(proto); 57498943Sluigi setservent(1); 575101628Sluigi se = getservbyname(buf, pe ? pe->p_name : NULL); 576101628Sluigi free(buf); 57798943Sluigi if (se != NULL) { 57898943Sluigi *end = s1; 57998943Sluigi return ntohs(se->s_port); 58098943Sluigi } 58198943Sluigi } 582101628Sluigi return 0; /* not found */ 58398943Sluigi} 58498943Sluigi 58598943Sluigi/* 586117328Sluigi * Fill the body of the command with the list of port ranges. 58798943Sluigi */ 58898943Sluigistatic int 58998943Sluigifill_newports(ipfw_insn_u16 *cmd, char *av, int proto) 59098943Sluigi{ 591117328Sluigi uint16_t a, b, *p = cmd->ports; 59298943Sluigi int i = 0; 593102087Sluigi char *s = av; 59498943Sluigi 595102087Sluigi while (*s) { 59698943Sluigi a = strtoport(av, &s, 0, proto); 597159636Soleg if (s == av) /* empty or invalid argument */ 598159636Soleg return (0); 599159636Soleg 600159636Soleg switch (*s) { 601159636Soleg case '-': /* a range */ 602159636Soleg av = s + 1; 60398943Sluigi b = strtoport(av, &s, 0, proto); 604159636Soleg /* Reject expressions like '1-abc' or '1-2-3'. */ 605159636Soleg if (s == av || (*s != ',' && *s != '\0')) 606159636Soleg return (0); 60798943Sluigi p[0] = a; 60898943Sluigi p[1] = b; 609159636Soleg break; 610159636Soleg case ',': /* comma separated list */ 611159636Soleg case '\0': 61298943Sluigi p[0] = p[1] = a; 613159636Soleg break; 614159636Soleg default: 615159636Soleg warnx("port list: invalid separator <%c> in <%s>", 616101978Sluigi *s, av); 617159636Soleg return (0); 618159636Soleg } 619159636Soleg 620102087Sluigi i++; 621102087Sluigi p += 2; 622159636Soleg av = s + 1; 62398943Sluigi } 62498943Sluigi if (i > 0) { 625159636Soleg if (i + 1 > F_LEN_MASK) 626102087Sluigi errx(EX_DATAERR, "too many ports/ranges\n"); 627159636Soleg cmd->o.len |= i + 1; /* leave F_NOT and F_OR untouched */ 62898943Sluigi } 629159636Soleg return (i); 63098943Sluigi} 63198943Sluigi 63298943Sluigistatic struct _s_x icmpcodes[] = { 63398943Sluigi { "net", ICMP_UNREACH_NET }, 63498943Sluigi { "host", ICMP_UNREACH_HOST }, 63598943Sluigi { "protocol", ICMP_UNREACH_PROTOCOL }, 63698943Sluigi { "port", ICMP_UNREACH_PORT }, 63798943Sluigi { "needfrag", ICMP_UNREACH_NEEDFRAG }, 63898943Sluigi { "srcfail", ICMP_UNREACH_SRCFAIL }, 63998943Sluigi { "net-unknown", ICMP_UNREACH_NET_UNKNOWN }, 64098943Sluigi { "host-unknown", ICMP_UNREACH_HOST_UNKNOWN }, 64198943Sluigi { "isolated", ICMP_UNREACH_ISOLATED }, 64298943Sluigi { "net-prohib", ICMP_UNREACH_NET_PROHIB }, 64398943Sluigi { "host-prohib", ICMP_UNREACH_HOST_PROHIB }, 64498943Sluigi { "tosnet", ICMP_UNREACH_TOSNET }, 64598943Sluigi { "toshost", ICMP_UNREACH_TOSHOST }, 64698943Sluigi { "filter-prohib", ICMP_UNREACH_FILTER_PROHIB }, 64798943Sluigi { "host-precedence", ICMP_UNREACH_HOST_PRECEDENCE }, 64898943Sluigi { "precedence-cutoff", ICMP_UNREACH_PRECEDENCE_CUTOFF }, 64998943Sluigi { NULL, 0 } 65098943Sluigi}; 65198943Sluigi 65298943Sluigistatic void 65398943Sluigifill_reject_code(u_short *codep, char *str) 65498943Sluigi{ 65598943Sluigi int val; 65698943Sluigi char *s; 65798943Sluigi 65898943Sluigi val = strtoul(str, &s, 0); 65998943Sluigi if (s == str || *s != '\0' || val >= 0x100) 66098943Sluigi val = match_token(icmpcodes, str); 661102087Sluigi if (val < 0) 66298943Sluigi errx(EX_DATAERR, "unknown ICMP unreachable code ``%s''", str); 66398943Sluigi *codep = val; 66498943Sluigi return; 66598943Sluigi} 66698943Sluigi 66798943Sluigistatic void 668117328Sluigiprint_reject_code(uint16_t code) 66998943Sluigi{ 670117469Sluigi char const *s = match_value(icmpcodes, code); 67198943Sluigi 67298943Sluigi if (s != NULL) 67399475Sluigi printf("unreach %s", s); 67498943Sluigi else 67599475Sluigi printf("unreach %u", code); 67698943Sluigi} 67798943Sluigi 67898943Sluigi/* 67998943Sluigi * Returns the number of bits set (from left) in a contiguous bitmask, 68098943Sluigi * or -1 if the mask is not contiguous. 68198943Sluigi * XXX this needs a proper fix. 68298943Sluigi * This effectively works on masks in big-endian (network) format. 68398943Sluigi * when compiled on little endian architectures. 68498943Sluigi * 68598943Sluigi * First bit is bit 7 of the first byte -- note, for MAC addresses, 68698943Sluigi * the first bit on the wire is bit 0 of the first byte. 68798943Sluigi * len is the max length in bits. 68898943Sluigi */ 689187770Sluigiint 690117577Sluigicontigmask(uint8_t *p, int len) 69198943Sluigi{ 69298943Sluigi int i, n; 693117577Sluigi 69498943Sluigi for (i=0; i<len ; i++) 69598943Sluigi if ( (p[i/8] & (1 << (7 - (i%8)))) == 0) /* first bit unset */ 69698943Sluigi break; 69798943Sluigi for (n=i+1; n < len; n++) 69898943Sluigi if ( (p[n/8] & (1 << (7 - (n%8)))) != 0) 69998943Sluigi return -1; /* mask not contiguous */ 70098943Sluigi return i; 70198943Sluigi} 70298943Sluigi 70398943Sluigi/* 70498943Sluigi * print flags set/clear in the two bitmasks passed as parameters. 70598943Sluigi * There is a specialized check for f_tcpflags. 70698943Sluigi */ 70798943Sluigistatic void 708117469Sluigiprint_flags(char const *name, ipfw_insn *cmd, struct _s_x *list) 70998943Sluigi{ 710117469Sluigi char const *comma = ""; 71198943Sluigi int i; 712117577Sluigi uint8_t set = cmd->arg1 & 0xff; 713117577Sluigi uint8_t clear = (cmd->arg1 >> 8) & 0xff; 71498943Sluigi 71598943Sluigi if (list == f_tcpflags && set == TH_SYN && clear == TH_ACK) { 71698943Sluigi printf(" setup"); 71798943Sluigi return; 71898943Sluigi } 71998943Sluigi 72098943Sluigi printf(" %s ", name); 72198943Sluigi for (i=0; list[i].x != 0; i++) { 72298943Sluigi if (set & list[i].x) { 72398943Sluigi set &= ~list[i].x; 72498943Sluigi printf("%s%s", comma, list[i].s); 72598943Sluigi comma = ","; 72698943Sluigi } 72798943Sluigi if (clear & list[i].x) { 72898943Sluigi clear &= ~list[i].x; 72998943Sluigi printf("%s!%s", comma, list[i].s); 73098943Sluigi comma = ","; 73198943Sluigi } 73298943Sluigi } 73398943Sluigi} 73498943Sluigi 73598943Sluigi/* 73698943Sluigi * Print the ip address contained in a command. 73798943Sluigi */ 73898943Sluigistatic void 739117469Sluigiprint_ip(ipfw_insn_ip *cmd, char const *s) 74098943Sluigi{ 74198943Sluigi struct hostent *he = NULL; 742117328Sluigi int len = F_LEN((ipfw_insn *)cmd); 743117328Sluigi uint32_t *a = ((ipfw_insn_u32 *)cmd)->d; 74498943Sluigi 745102087Sluigi printf("%s%s ", cmd->o.len & F_NOT ? " not": "", s); 74698943Sluigi 74798943Sluigi if (cmd->o.opcode == O_IP_SRC_ME || cmd->o.opcode == O_IP_DST_ME) { 74898943Sluigi printf("me"); 74998943Sluigi return; 75098943Sluigi } 751130281Sru if (cmd->o.opcode == O_IP_SRC_LOOKUP || 752130281Sru cmd->o.opcode == O_IP_DST_LOOKUP) { 753130281Sru printf("table(%u", ((ipfw_insn *)cmd)->arg1); 754130281Sru if (len == F_INSN_SIZE(ipfw_insn_u32)) 755130281Sru printf(",%u", *a); 756130281Sru printf(")"); 757130281Sru return; 758130281Sru } 75998943Sluigi if (cmd->o.opcode == O_IP_SRC_SET || cmd->o.opcode == O_IP_DST_SET) { 760117328Sluigi uint32_t x, *map = (uint32_t *)&(cmd->mask); 761116716Sluigi int i, j; 76298943Sluigi char comma = '{'; 76398943Sluigi 76498943Sluigi x = cmd->o.arg1 - 1; 76598943Sluigi x = htonl( ~x ); 76698943Sluigi cmd->addr.s_addr = htonl(cmd->addr.s_addr); 76798943Sluigi printf("%s/%d", inet_ntoa(cmd->addr), 768117577Sluigi contigmask((uint8_t *)&x, 32)); 76998943Sluigi x = cmd->addr.s_addr = htonl(cmd->addr.s_addr); 77098943Sluigi x &= 0xff; /* base */ 771116716Sluigi /* 772116716Sluigi * Print bits and ranges. 773116716Sluigi * Locate first bit set (i), then locate first bit unset (j). 774116716Sluigi * If we have 3+ consecutive bits set, then print them as a 775116716Sluigi * range, otherwise only print the initial bit and rescan. 776116716Sluigi */ 77798943Sluigi for (i=0; i < cmd->o.arg1; i++) 778117328Sluigi if (map[i/32] & (1<<(i & 31))) { 779116716Sluigi for (j=i+1; j < cmd->o.arg1; j++) 780117328Sluigi if (!(map[ j/32] & (1<<(j & 31)))) 781116716Sluigi break; 78298943Sluigi printf("%c%d", comma, i+x); 783116716Sluigi if (j>i+2) { /* range has at least 3 elements */ 784116716Sluigi printf("-%d", j-1+x); 785116716Sluigi i = j-1; 786116716Sluigi } 78798943Sluigi comma = ','; 78898943Sluigi } 78998943Sluigi printf("}"); 79098943Sluigi return; 79198943Sluigi } 792117328Sluigi /* 793117328Sluigi * len == 2 indicates a single IP, whereas lists of 1 or more 794117328Sluigi * addr/mask pairs have len = (2n+1). We convert len to n so we 795117328Sluigi * use that to count the number of entries. 796117328Sluigi */ 797117328Sluigi for (len = len / 2; len > 0; len--, a += 2) { 798117328Sluigi int mb = /* mask length */ 799117328Sluigi (cmd->o.opcode == O_IP_SRC || cmd->o.opcode == O_IP_DST) ? 800117577Sluigi 32 : contigmask((uint8_t *)&(a[1]), 32); 801187764Sluigi if (mb == 32 && co.do_resolv) 802117328Sluigi he = gethostbyaddr((char *)&(a[0]), sizeof(u_long), AF_INET); 80398943Sluigi if (he != NULL) /* resolved to name */ 80498943Sluigi printf("%s", he->h_name); 80598943Sluigi else if (mb == 0) /* any */ 80698943Sluigi printf("any"); 80798943Sluigi else { /* numeric IP followed by some kind of mask */ 808117328Sluigi printf("%s", inet_ntoa( *((struct in_addr *)&a[0]) ) ); 80998943Sluigi if (mb < 0) 810117328Sluigi printf(":%s", inet_ntoa( *((struct in_addr *)&a[1]) ) ); 81198943Sluigi else if (mb < 32) 81298943Sluigi printf("/%d", mb); 81398943Sluigi } 814117328Sluigi if (len > 1) 815117328Sluigi printf(","); 816117328Sluigi } 81798943Sluigi} 81898943Sluigi 81998943Sluigi/* 82098943Sluigi * prints a MAC address/mask pair 82198943Sluigi */ 82298943Sluigistatic void 823117577Sluigiprint_mac(uint8_t *addr, uint8_t *mask) 82498943Sluigi{ 82598943Sluigi int l = contigmask(mask, 48); 82698943Sluigi 82798943Sluigi if (l == 0) 82898943Sluigi printf(" any"); 82998943Sluigi else { 83098943Sluigi printf(" %02x:%02x:%02x:%02x:%02x:%02x", 83198943Sluigi addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 83298943Sluigi if (l == -1) 83398943Sluigi printf("&%02x:%02x:%02x:%02x:%02x:%02x", 83498943Sluigi mask[0], mask[1], mask[2], 83598943Sluigi mask[3], mask[4], mask[5]); 83698943Sluigi else if (l < 48) 83798943Sluigi printf("/%d", l); 83898943Sluigi } 83998943Sluigi} 84098943Sluigi 84199475Sluigistatic void 84299475Sluigifill_icmptypes(ipfw_insn_u32 *cmd, char *av) 84399475Sluigi{ 844117328Sluigi uint8_t type; 84598943Sluigi 84699475Sluigi cmd->d[0] = 0; 84799475Sluigi while (*av) { 84899475Sluigi if (*av == ',') 84999475Sluigi av++; 85099475Sluigi 85199475Sluigi type = strtoul(av, &av, 0); 85299475Sluigi 85399475Sluigi if (*av != ',' && *av != '\0') 85499475Sluigi errx(EX_DATAERR, "invalid ICMP type"); 85599475Sluigi 85699475Sluigi if (type > 31) 85799475Sluigi errx(EX_DATAERR, "ICMP type out of range"); 85899475Sluigi 85999475Sluigi cmd->d[0] |= 1 << type; 86099475Sluigi } 86199475Sluigi cmd->o.opcode = O_ICMPTYPE; 86299475Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 86399475Sluigi} 86499475Sluigi 86599475Sluigistatic void 86699475Sluigiprint_icmptypes(ipfw_insn_u32 *cmd) 86799475Sluigi{ 86899475Sluigi int i; 86999475Sluigi char sep= ' '; 87099475Sluigi 87199475Sluigi printf(" icmptypes"); 87299475Sluigi for (i = 0; i < 32; i++) { 87399475Sluigi if ( (cmd->d[0] & (1 << (i))) == 0) 87499475Sluigi continue; 87599475Sluigi printf("%c%d", sep, i); 87699475Sluigi sep = ','; 87799475Sluigi } 87899475Sluigi} 87999475Sluigi 88098943Sluigi/* 88198943Sluigi * show_ipfw() prints the body of an ipfw rule. 88298943Sluigi * Because the standard rule has at least proto src_ip dst_ip, we use 88398943Sluigi * a helper function to produce these entries if not provided explicitly. 884102087Sluigi * The first argument is the list of fields we have, the second is 885102087Sluigi * the list of fields we want to be printed. 886101978Sluigi * 887102087Sluigi * Special cases if we have provided a MAC header: 888102087Sluigi * + if the rule does not contain IP addresses/ports, do not print them; 889102087Sluigi * + if the rule does not contain an IP proto, print "all" instead of "ip"; 890102087Sluigi * 891102087Sluigi * Once we have 'have_options', IP header fields are printed as options. 89298943Sluigi */ 893101978Sluigi#define HAVE_PROTO 0x0001 894101978Sluigi#define HAVE_SRCIP 0x0002 895101978Sluigi#define HAVE_DSTIP 0x0004 896169139Smaxim#define HAVE_PROTO4 0x0008 897169139Smaxim#define HAVE_PROTO6 0x0010 898102087Sluigi#define HAVE_OPTIONS 0x8000 89998943Sluigi 900101978Sluigi#define HAVE_IP (HAVE_PROTO | HAVE_SRCIP | HAVE_DSTIP) 90198943Sluigistatic void 902187477Sluigishow_prerequisites(int *flags, int want, int cmd __unused) 90398943Sluigi{ 904187764Sluigi if (co.comment_only) 905123495Sluigi return; 906102087Sluigi if ( (*flags & HAVE_IP) == HAVE_IP) 907102087Sluigi *flags |= HAVE_OPTIONS; 908102087Sluigi 909102087Sluigi if ( !(*flags & HAVE_OPTIONS)) { 910187477Sluigi if ( !(*flags & HAVE_PROTO) && (want & HAVE_PROTO)) { 911146894Smlaier if ( (*flags & HAVE_PROTO4)) 912146894Smlaier printf(" ip4"); 913146894Smlaier else if ( (*flags & HAVE_PROTO6)) 914146894Smlaier printf(" ip6"); 915146894Smlaier else 916146894Smlaier printf(" ip"); 917187477Sluigi } 918102087Sluigi if ( !(*flags & HAVE_SRCIP) && (want & HAVE_SRCIP)) 919102087Sluigi printf(" from any"); 920102087Sluigi if ( !(*flags & HAVE_DSTIP) && (want & HAVE_DSTIP)) 921102087Sluigi printf(" to any"); 922102087Sluigi } 92398943Sluigi *flags |= want; 92498943Sluigi} 92598943Sluigi 92698943Sluigistatic void 927112189Smaximshow_ipfw(struct ip_fw *rule, int pcwidth, int bcwidth) 92898943Sluigi{ 929107291Skeramida static int twidth = 0; 93098943Sluigi int l; 931158879Soleg ipfw_insn *cmd, *tagptr = NULL; 932187477Sluigi const char *comment = NULL; /* ptr to comment if we have one */ 93398943Sluigi int proto = 0; /* default */ 93498943Sluigi int flags = 0; /* prerequisites */ 93598943Sluigi ipfw_insn_log *logptr = NULL; /* set if we find an O_LOG */ 936136071Sgreen ipfw_insn_altq *altqptr = NULL; /* set if we find an O_ALTQ */ 93798943Sluigi int or_block = 0; /* we are in an or block */ 938117328Sluigi uint32_t set_disable; 93998943Sluigi 940115793Sticso bcopy(&rule->next_rule, &set_disable, sizeof(set_disable)); 941101628Sluigi 942101628Sluigi if (set_disable & (1 << rule->set)) { /* disabled */ 943187764Sluigi if (!co.show_sets) 944101628Sluigi return; 945101628Sluigi else 946101628Sluigi printf("# DISABLED "); 947101628Sluigi } 94898943Sluigi printf("%05u ", rule->rulenum); 94998943Sluigi 950117469Sluigi if (pcwidth>0 || bcwidth>0) 951115793Sticso printf("%*llu %*llu ", pcwidth, align_uint64(&rule->pcnt), 952115793Sticso bcwidth, align_uint64(&rule->bcnt)); 95398943Sluigi 954187764Sluigi if (co.do_time == 2) 955117472Sluigi printf("%10u ", rule->timestamp); 956187764Sluigi else if (co.do_time == 1) { 957107291Skeramida char timestr[30]; 958107291Skeramida time_t t = (time_t)0; 959107291Skeramida 960107291Skeramida if (twidth == 0) { 961107291Skeramida strcpy(timestr, ctime(&t)); 962107291Skeramida *strchr(timestr, '\n') = '\0'; 963107291Skeramida twidth = strlen(timestr); 964107291Skeramida } 96598943Sluigi if (rule->timestamp) { 966107291Skeramida t = _long_to_time(rule->timestamp); 96798943Sluigi 96898943Sluigi strcpy(timestr, ctime(&t)); 96998943Sluigi *strchr(timestr, '\n') = '\0'; 97098943Sluigi printf("%s ", timestr); 97198943Sluigi } else { 972107291Skeramida printf("%*s", twidth, " "); 97398943Sluigi } 97498943Sluigi } 97598943Sluigi 976187764Sluigi if (co.show_sets) 977101628Sluigi printf("set %d ", rule->set); 978101628Sluigi 97998943Sluigi /* 980107289Sluigi * print the optional "match probability" 981107289Sluigi */ 982107289Sluigi if (rule->cmd_len > 0) { 983107289Sluigi cmd = rule->cmd ; 984107289Sluigi if (cmd->opcode == O_PROB) { 985107289Sluigi ipfw_insn_u32 *p = (ipfw_insn_u32 *)cmd; 986107289Sluigi double d = 1.0 * p->d[0]; 987107289Sluigi 988107289Sluigi d = (d / 0x7fffffff); 989107289Sluigi printf("prob %f ", d); 990107289Sluigi } 991107289Sluigi } 992107289Sluigi 993107289Sluigi /* 99498943Sluigi * first print actions 99598943Sluigi */ 99698943Sluigi for (l = rule->cmd_len - rule->act_ofs, cmd = ACTION_PTR(rule); 99798943Sluigi l > 0 ; l -= F_LEN(cmd), cmd += F_LEN(cmd)) { 99898943Sluigi switch(cmd->opcode) { 99998943Sluigi case O_CHECK_STATE: 100098943Sluigi printf("check-state"); 1001102087Sluigi flags = HAVE_IP; /* avoid printing anything else */ 100298943Sluigi break; 100398943Sluigi 100498943Sluigi case O_ACCEPT: 100598943Sluigi printf("allow"); 100698943Sluigi break; 100798943Sluigi 100898943Sluigi case O_COUNT: 100998943Sluigi printf("count"); 101098943Sluigi break; 101198943Sluigi 101298943Sluigi case O_DENY: 101398943Sluigi printf("deny"); 101498943Sluigi break; 101598943Sluigi 101699475Sluigi case O_REJECT: 101799475Sluigi if (cmd->arg1 == ICMP_REJECT_RST) 101899475Sluigi printf("reset"); 101999475Sluigi else if (cmd->arg1 == ICMP_UNREACH_HOST) 102099475Sluigi printf("reject"); 102199475Sluigi else 102299475Sluigi print_reject_code(cmd->arg1); 102399475Sluigi break; 102499475Sluigi 1025149020Sbz case O_UNREACH6: 1026149020Sbz if (cmd->arg1 == ICMP6_UNREACH_RST) 1027149020Sbz printf("reset6"); 1028149020Sbz else 1029149020Sbz print_unreach6_code(cmd->arg1); 1030149020Sbz break; 1031149020Sbz 1032159636Soleg case O_SKIPTO: 1033159636Soleg PRINT_UINT_ARG("skipto ", cmd->arg1); 103498943Sluigi break; 103598943Sluigi 103698943Sluigi case O_PIPE: 1037159636Soleg PRINT_UINT_ARG("pipe ", cmd->arg1); 1038159636Soleg break; 1039159636Soleg 104098943Sluigi case O_QUEUE: 1041159636Soleg PRINT_UINT_ARG("queue ", cmd->arg1); 1042159636Soleg break; 1043159636Soleg 104498943Sluigi case O_DIVERT: 1045159636Soleg PRINT_UINT_ARG("divert ", cmd->arg1); 1046159636Soleg break; 1047159636Soleg 104898943Sluigi case O_TEE: 1049159636Soleg PRINT_UINT_ARG("tee ", cmd->arg1); 1050159636Soleg break; 1051159636Soleg 1052141351Sglebius case O_NETGRAPH: 1053159636Soleg PRINT_UINT_ARG("netgraph ", cmd->arg1); 1054159636Soleg break; 1055159636Soleg 1056141351Sglebius case O_NGTEE: 1057159636Soleg PRINT_UINT_ARG("ngtee ", cmd->arg1); 1058159636Soleg break; 1059141351Sglebius 106098943Sluigi case O_FORWARD_IP: 106198943Sluigi { 106298943Sluigi ipfw_insn_sa *s = (ipfw_insn_sa *)cmd; 106398943Sluigi 1064161424Sjulian if (s->sa.sin_addr.s_addr == INADDR_ANY) { 1065161424Sjulian printf("fwd tablearg"); 1066161424Sjulian } else { 1067161424Sjulian printf("fwd %s", inet_ntoa(s->sa.sin_addr)); 1068161424Sjulian } 106998943Sluigi if (s->sa.sin_port) 1070103241Sluigi printf(",%d", s->sa.sin_port); 107198943Sluigi } 107298943Sluigi break; 107398943Sluigi 107498943Sluigi case O_LOG: /* O_LOG is printed last */ 107598943Sluigi logptr = (ipfw_insn_log *)cmd; 107698943Sluigi break; 107798943Sluigi 1078136071Sgreen case O_ALTQ: /* O_ALTQ is printed after O_LOG */ 1079136071Sgreen altqptr = (ipfw_insn_altq *)cmd; 1080136071Sgreen break; 1081136071Sgreen 1082158879Soleg case O_TAG: 1083158879Soleg tagptr = cmd; 1084158879Soleg break; 1085158879Soleg 1086165648Spiso case O_NAT: 1087176517Spiso PRINT_UINT_ARG("nat ", cmd->arg1); 1088165648Spiso break; 1089165648Spiso 1090178888Sjulian case O_SETFIB: 1091178888Sjulian PRINT_UINT_ARG("setfib ", cmd->arg1); 1092178888Sjulian break; 1093190633Spiso 1094190633Spiso case O_REASS: 1095190633Spiso printf("reass"); 1096190633Spiso break; 1097178888Sjulian 109898943Sluigi default: 1099136071Sgreen printf("** unrecognized action %d len %d ", 110098943Sluigi cmd->opcode, cmd->len); 110198943Sluigi } 110298943Sluigi } 110398943Sluigi if (logptr) { 110498943Sluigi if (logptr->max_log > 0) 110599909Sluigi printf(" log logamount %d", logptr->max_log); 110698943Sluigi else 110799909Sluigi printf(" log"); 110898943Sluigi } 1109136071Sgreen if (altqptr) { 1110187983Sluigi print_altq_cmd(altqptr); 1111136071Sgreen } 1112158879Soleg if (tagptr) { 1113158879Soleg if (tagptr->len & F_NOT) 1114159636Soleg PRINT_UINT_ARG(" untag ", tagptr->arg1); 1115158879Soleg else 1116159636Soleg PRINT_UINT_ARG(" tag ", tagptr->arg1); 1117158879Soleg } 1118136071Sgreen 111998943Sluigi /* 1120102087Sluigi * then print the body. 112198943Sluigi */ 1122146894Smlaier for (l = rule->act_ofs, cmd = rule->cmd ; 1123146894Smlaier l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 1124146894Smlaier if ((cmd->len & F_OR) || (cmd->len & F_NOT)) 1125146894Smlaier continue; 1126146894Smlaier if (cmd->opcode == O_IP4) { 1127146894Smlaier flags |= HAVE_PROTO4; 1128146894Smlaier break; 1129146894Smlaier } else if (cmd->opcode == O_IP6) { 1130146894Smlaier flags |= HAVE_PROTO6; 1131146894Smlaier break; 1132146894Smlaier } 1133146894Smlaier } 1134102087Sluigi if (rule->_pad & 1) { /* empty rules before options */ 1135187764Sluigi if (!co.do_compact) { 1136146894Smlaier show_prerequisites(&flags, HAVE_PROTO, 0); 1137146894Smlaier printf(" from any to any"); 1138146894Smlaier } 1139102087Sluigi flags |= HAVE_IP | HAVE_OPTIONS; 1140102087Sluigi } 1141102087Sluigi 1142187764Sluigi if (co.comment_only) 1143123495Sluigi comment = "..."; 1144123495Sluigi 114598943Sluigi for (l = rule->act_ofs, cmd = rule->cmd ; 114698943Sluigi l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 114799475Sluigi /* useful alias */ 114899475Sluigi ipfw_insn_u32 *cmd32 = (ipfw_insn_u32 *)cmd; 114998943Sluigi 1150187764Sluigi if (co.comment_only) { 1151123495Sluigi if (cmd->opcode != O_NOP) 1152123495Sluigi continue; 1153123495Sluigi printf(" // %s\n", (char *)(cmd + 1)); 1154123495Sluigi return; 1155123495Sluigi } 1156123495Sluigi 1157102087Sluigi show_prerequisites(&flags, 0, cmd->opcode); 1158102087Sluigi 115998943Sluigi switch(cmd->opcode) { 1160117577Sluigi case O_PROB: 1161107289Sluigi break; /* done already */ 1162107289Sluigi 116398943Sluigi case O_PROBE_STATE: 116498943Sluigi break; /* no need to print anything here */ 116598943Sluigi 116698943Sluigi case O_IP_SRC: 1167130281Sru case O_IP_SRC_LOOKUP: 116898943Sluigi case O_IP_SRC_MASK: 116998943Sluigi case O_IP_SRC_ME: 117098943Sluigi case O_IP_SRC_SET: 1171102087Sluigi show_prerequisites(&flags, HAVE_PROTO, 0); 117298943Sluigi if (!(flags & HAVE_SRCIP)) 117398943Sluigi printf(" from"); 117498943Sluigi if ((cmd->len & F_OR) && !or_block) 117598943Sluigi printf(" {"); 1176102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1177102087Sluigi (flags & HAVE_OPTIONS) ? " src-ip" : ""); 117898943Sluigi flags |= HAVE_SRCIP; 117998943Sluigi break; 118098943Sluigi 118198943Sluigi case O_IP_DST: 1182130281Sru case O_IP_DST_LOOKUP: 118398943Sluigi case O_IP_DST_MASK: 118498943Sluigi case O_IP_DST_ME: 118598943Sluigi case O_IP_DST_SET: 1186102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 118798943Sluigi if (!(flags & HAVE_DSTIP)) 118898943Sluigi printf(" to"); 118998943Sluigi if ((cmd->len & F_OR) && !or_block) 119098943Sluigi printf(" {"); 1191102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1192102087Sluigi (flags & HAVE_OPTIONS) ? " dst-ip" : ""); 119398943Sluigi flags |= HAVE_DSTIP; 119498943Sluigi break; 119598943Sluigi 1196145246Sbrooks case O_IP6_SRC: 1197145246Sbrooks case O_IP6_SRC_MASK: 1198145246Sbrooks case O_IP6_SRC_ME: 1199147105Smlaier show_prerequisites(&flags, HAVE_PROTO, 0); 1200145246Sbrooks if (!(flags & HAVE_SRCIP)) 1201145246Sbrooks printf(" from"); 1202145246Sbrooks if ((cmd->len & F_OR) && !or_block) 1203145246Sbrooks printf(" {"); 1204145246Sbrooks print_ip6((ipfw_insn_ip6 *)cmd, 1205145246Sbrooks (flags & HAVE_OPTIONS) ? " src-ip6" : ""); 1206145246Sbrooks flags |= HAVE_SRCIP | HAVE_PROTO; 1207145246Sbrooks break; 1208145246Sbrooks 1209145246Sbrooks case O_IP6_DST: 1210145246Sbrooks case O_IP6_DST_MASK: 1211145246Sbrooks case O_IP6_DST_ME: 1212145246Sbrooks show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 1213145246Sbrooks if (!(flags & HAVE_DSTIP)) 1214145246Sbrooks printf(" to"); 1215145246Sbrooks if ((cmd->len & F_OR) && !or_block) 1216145246Sbrooks printf(" {"); 1217145246Sbrooks print_ip6((ipfw_insn_ip6 *)cmd, 1218145246Sbrooks (flags & HAVE_OPTIONS) ? " dst-ip6" : ""); 1219145246Sbrooks flags |= HAVE_DSTIP; 1220145246Sbrooks break; 1221145246Sbrooks 1222145246Sbrooks case O_FLOW6ID: 1223145246Sbrooks print_flow6id( (ipfw_insn_u32 *) cmd ); 1224145246Sbrooks flags |= HAVE_OPTIONS; 1225145246Sbrooks break; 1226145246Sbrooks 122798943Sluigi case O_IP_DSTPORT: 1228102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 122998943Sluigi case O_IP_SRCPORT: 1230102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 1231101641Sluigi if ((cmd->len & F_OR) && !or_block) 1232101641Sluigi printf(" {"); 1233172306Smaxim if (cmd->len & F_NOT) 1234172306Smaxim printf(" not"); 1235102087Sluigi print_newports((ipfw_insn_u16 *)cmd, proto, 1236102087Sluigi (flags & HAVE_OPTIONS) ? cmd->opcode : 0); 123798943Sluigi break; 123898943Sluigi 123998943Sluigi case O_PROTO: { 1240145246Sbrooks struct protoent *pe = NULL; 124198943Sluigi 124298943Sluigi if ((cmd->len & F_OR) && !or_block) 124398943Sluigi printf(" {"); 124498943Sluigi if (cmd->len & F_NOT) 124598943Sluigi printf(" not"); 124698943Sluigi proto = cmd->arg1; 1247145567Sbrooks pe = getprotobynumber(cmd->arg1); 1248146894Smlaier if ((flags & (HAVE_PROTO4 | HAVE_PROTO6)) && 1249146894Smlaier !(flags & HAVE_PROTO)) 1250146894Smlaier show_prerequisites(&flags, 1251146894Smlaier HAVE_IP | HAVE_OPTIONS, 0); 1252102087Sluigi if (flags & HAVE_OPTIONS) 1253102087Sluigi printf(" proto"); 125498943Sluigi if (pe) 125598943Sluigi printf(" %s", pe->p_name); 125698943Sluigi else 125798943Sluigi printf(" %u", cmd->arg1); 125898943Sluigi } 125998943Sluigi flags |= HAVE_PROTO; 126098943Sluigi break; 1261106505Smaxim 126298943Sluigi default: /*options ... */ 1263146894Smlaier if (!(cmd->len & (F_OR|F_NOT))) 1264146894Smlaier if (((cmd->opcode == O_IP6) && 1265146894Smlaier (flags & HAVE_PROTO6)) || 1266146894Smlaier ((cmd->opcode == O_IP4) && 1267146894Smlaier (flags & HAVE_PROTO4))) 1268146894Smlaier break; 1269102087Sluigi show_prerequisites(&flags, HAVE_IP | HAVE_OPTIONS, 0); 127098943Sluigi if ((cmd->len & F_OR) && !or_block) 127198943Sluigi printf(" {"); 127298943Sluigi if (cmd->len & F_NOT && cmd->opcode != O_IN) 127398943Sluigi printf(" not"); 127498943Sluigi switch(cmd->opcode) { 1275169139Smaxim case O_MACADDR2: { 1276169139Smaxim ipfw_insn_mac *m = (ipfw_insn_mac *)cmd; 1277169139Smaxim 1278169139Smaxim printf(" MAC"); 1279169139Smaxim print_mac(m->addr, m->mask); 1280169139Smaxim print_mac(m->addr + 6, m->mask + 6); 1281169139Smaxim } 1282169139Smaxim break; 1283169139Smaxim 1284169139Smaxim case O_MAC_TYPE: 1285169139Smaxim print_newports((ipfw_insn_u16 *)cmd, 1286169139Smaxim IPPROTO_ETHERTYPE, cmd->opcode); 1287169139Smaxim break; 1288169139Smaxim 1289169139Smaxim 129098943Sluigi case O_FRAG: 129198943Sluigi printf(" frag"); 129298943Sluigi break; 129398943Sluigi 1294178888Sjulian case O_FIB: 1295178888Sjulian printf(" fib %u", cmd->arg1 ); 1296178888Sjulian break; 1297178888Sjulian 129898943Sluigi case O_IN: 129998943Sluigi printf(cmd->len & F_NOT ? " out" : " in"); 130098943Sluigi break; 130198943Sluigi 1302136073Sgreen case O_DIVERTED: 1303136073Sgreen switch (cmd->arg1) { 1304136073Sgreen case 3: 1305136073Sgreen printf(" diverted"); 1306136073Sgreen break; 1307136073Sgreen case 1: 1308136073Sgreen printf(" diverted-loopback"); 1309136073Sgreen break; 1310136073Sgreen case 2: 1311136073Sgreen printf(" diverted-output"); 1312136073Sgreen break; 1313136073Sgreen default: 1314136073Sgreen printf(" diverted-?<%u>", cmd->arg1); 1315136073Sgreen break; 1316136073Sgreen } 1317136073Sgreen break; 1318136073Sgreen 131998943Sluigi case O_LAYER2: 132098943Sluigi printf(" layer2"); 132198943Sluigi break; 132298943Sluigi case O_XMIT: 132398943Sluigi case O_RECV: 1324140423Sglebius case O_VIA: 1325140423Sglebius { 1326117469Sluigi char const *s; 132798943Sluigi ipfw_insn_if *cmdif = (ipfw_insn_if *)cmd; 132898943Sluigi 132998943Sluigi if (cmd->opcode == O_XMIT) 133098943Sluigi s = "xmit"; 133198943Sluigi else if (cmd->opcode == O_RECV) 133298943Sluigi s = "recv"; 1333117469Sluigi else /* if (cmd->opcode == O_VIA) */ 133498943Sluigi s = "via"; 133598943Sluigi if (cmdif->name[0] == '\0') 133699475Sluigi printf(" %s %s", s, 133799475Sluigi inet_ntoa(cmdif->p.ip)); 1338140423Sglebius else 1339140423Sglebius printf(" %s %s", s, cmdif->name); 1340140423Sglebius 134198943Sluigi break; 1342140423Sglebius } 134398943Sluigi case O_IPID: 1344116690Sluigi if (F_LEN(cmd) == 1) 1345116690Sluigi printf(" ipid %u", cmd->arg1 ); 1346116690Sluigi else 1347116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1348116690Sluigi O_IPID); 134998943Sluigi break; 135098943Sluigi 135198943Sluigi case O_IPTTL: 1352116690Sluigi if (F_LEN(cmd) == 1) 1353116690Sluigi printf(" ipttl %u", cmd->arg1 ); 1354116690Sluigi else 1355116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1356116690Sluigi O_IPTTL); 135798943Sluigi break; 135898943Sluigi 135998943Sluigi case O_IPVER: 136098943Sluigi printf(" ipver %u", cmd->arg1 ); 136198943Sluigi break; 136298943Sluigi 136399475Sluigi case O_IPPRECEDENCE: 136499475Sluigi printf(" ipprecedence %u", (cmd->arg1) >> 5 ); 136599475Sluigi break; 136699475Sluigi 136798943Sluigi case O_IPLEN: 1368116690Sluigi if (F_LEN(cmd) == 1) 1369116690Sluigi printf(" iplen %u", cmd->arg1 ); 1370116690Sluigi else 1371116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1372116690Sluigi O_IPLEN); 137398943Sluigi break; 137498943Sluigi 1375101116Sluigi case O_IPOPT: 137698943Sluigi print_flags("ipoptions", cmd, f_ipopts); 137798943Sluigi break; 137898943Sluigi 137999475Sluigi case O_IPTOS: 138099475Sluigi print_flags("iptos", cmd, f_iptos); 138199475Sluigi break; 138299475Sluigi 138399475Sluigi case O_ICMPTYPE: 138499475Sluigi print_icmptypes((ipfw_insn_u32 *)cmd); 138599475Sluigi break; 138699475Sluigi 138798943Sluigi case O_ESTAB: 138898943Sluigi printf(" established"); 138998943Sluigi break; 139098943Sluigi 1391136075Sgreen case O_TCPDATALEN: 1392136075Sgreen if (F_LEN(cmd) == 1) 1393136075Sgreen printf(" tcpdatalen %u", cmd->arg1 ); 1394136075Sgreen else 1395136075Sgreen print_newports((ipfw_insn_u16 *)cmd, 0, 1396136075Sgreen O_TCPDATALEN); 1397136075Sgreen break; 1398136075Sgreen 139998943Sluigi case O_TCPFLAGS: 140098943Sluigi print_flags("tcpflags", cmd, f_tcpflags); 140198943Sluigi break; 140298943Sluigi 140398943Sluigi case O_TCPOPTS: 140498943Sluigi print_flags("tcpoptions", cmd, f_tcpopts); 140598943Sluigi break; 140698943Sluigi 140798943Sluigi case O_TCPWIN: 140898943Sluigi printf(" tcpwin %d", ntohs(cmd->arg1)); 140998943Sluigi break; 141098943Sluigi 141198943Sluigi case O_TCPACK: 141298943Sluigi printf(" tcpack %d", ntohl(cmd32->d[0])); 141398943Sluigi break; 141498943Sluigi 141598943Sluigi case O_TCPSEQ: 141698943Sluigi printf(" tcpseq %d", ntohl(cmd32->d[0])); 141798943Sluigi break; 141898943Sluigi 141998943Sluigi case O_UID: 142098943Sluigi { 142198943Sluigi struct passwd *pwd = getpwuid(cmd32->d[0]); 142298943Sluigi 142398943Sluigi if (pwd) 142498943Sluigi printf(" uid %s", pwd->pw_name); 142598943Sluigi else 142698943Sluigi printf(" uid %u", cmd32->d[0]); 142798943Sluigi } 142898943Sluigi break; 142998943Sluigi 143098943Sluigi case O_GID: 143198943Sluigi { 143298943Sluigi struct group *grp = getgrgid(cmd32->d[0]); 143398943Sluigi 143498943Sluigi if (grp) 143598943Sluigi printf(" gid %s", grp->gr_name); 143698943Sluigi else 143798943Sluigi printf(" gid %u", cmd32->d[0]); 143898943Sluigi } 143998943Sluigi break; 144098943Sluigi 1441133600Scsjp case O_JAIL: 1442133600Scsjp printf(" jail %d", cmd32->d[0]); 1443133600Scsjp break; 1444133600Scsjp 1445112250Scjc case O_VERREVPATH: 1446112250Scjc printf(" verrevpath"); 1447112250Scjc break; 1448116919Sluigi 1449128575Sandre case O_VERSRCREACH: 1450128575Sandre printf(" versrcreach"); 1451128575Sandre break; 1452128575Sandre 1453133387Sandre case O_ANTISPOOF: 1454133387Sandre printf(" antispoof"); 1455133387Sandre break; 1456133387Sandre 1457117241Sluigi case O_IPSEC: 1458117241Sluigi printf(" ipsec"); 1459117241Sluigi break; 1460117241Sluigi 1461117469Sluigi case O_NOP: 1462117626Sluigi comment = (char *)(cmd + 1); 1463117469Sluigi break; 1464117469Sluigi 146598943Sluigi case O_KEEP_STATE: 146698943Sluigi printf(" keep-state"); 146798943Sluigi break; 146898943Sluigi 1469159636Soleg case O_LIMIT: { 147098943Sluigi struct _s_x *p = limit_masks; 147198943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 1472117328Sluigi uint8_t x = c->limit_mask; 1473117469Sluigi char const *comma = " "; 147498943Sluigi 147598943Sluigi printf(" limit"); 1476117577Sluigi for (; p->x != 0 ; p++) 147799909Sluigi if ((x & p->x) == p->x) { 147898943Sluigi x &= ~p->x; 147998943Sluigi printf("%s%s", comma, p->s); 148098943Sluigi comma = ","; 148198943Sluigi } 1482159636Soleg PRINT_UINT_ARG(" ", c->conn_limit); 148398943Sluigi break; 1484159636Soleg } 148598943Sluigi 1486146894Smlaier case O_IP6: 1487152923Sume printf(" ip6"); 1488145246Sbrooks break; 1489145246Sbrooks 1490146894Smlaier case O_IP4: 1491152923Sume printf(" ip4"); 1492146894Smlaier break; 1493146894Smlaier 1494145246Sbrooks case O_ICMP6TYPE: 1495145246Sbrooks print_icmp6types((ipfw_insn_u32 *)cmd); 1496145246Sbrooks break; 1497145246Sbrooks 1498145246Sbrooks case O_EXT_HDR: 1499145246Sbrooks print_ext6hdr( (ipfw_insn *) cmd ); 1500145246Sbrooks break; 1501145246Sbrooks 1502158879Soleg case O_TAGGED: 1503158879Soleg if (F_LEN(cmd) == 1) 1504159636Soleg PRINT_UINT_ARG(" tagged ", cmd->arg1); 1505158879Soleg else 1506159636Soleg print_newports((ipfw_insn_u16 *)cmd, 0, 1507159636Soleg O_TAGGED); 1508158879Soleg break; 1509158879Soleg 151098943Sluigi default: 151198943Sluigi printf(" [opcode %d len %d]", 151298943Sluigi cmd->opcode, cmd->len); 151398943Sluigi } 151498943Sluigi } 151598943Sluigi if (cmd->len & F_OR) { 151698943Sluigi printf(" or"); 151798943Sluigi or_block = 1; 151898943Sluigi } else if (or_block) { 151998943Sluigi printf(" }"); 152098943Sluigi or_block = 0; 152198943Sluigi } 152298943Sluigi } 1523102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 1524117626Sluigi if (comment) 1525117626Sluigi printf(" // %s", comment); 152698943Sluigi printf("\n"); 152798943Sluigi} 152898943Sluigi 152998943Sluigistatic void 1530112189Smaximshow_dyn_ipfw(ipfw_dyn_rule *d, int pcwidth, int bcwidth) 153198943Sluigi{ 153298943Sluigi struct protoent *pe; 153398943Sluigi struct in_addr a; 1534115793Sticso uint16_t rulenum; 1535159160Smlaier char buf[INET6_ADDRSTRLEN]; 153698943Sluigi 1537187764Sluigi if (!co.do_expired) { 153898943Sluigi if (!d->expire && !(d->dyn_type == O_LIMIT_PARENT)) 153998943Sluigi return; 154098943Sluigi } 1541115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 1542117328Sluigi printf("%05d", rulenum); 1543117469Sluigi if (pcwidth>0 || bcwidth>0) 1544117328Sluigi printf(" %*llu %*llu (%ds)", pcwidth, 1545117328Sluigi align_uint64(&d->pcnt), bcwidth, 1546117328Sluigi align_uint64(&d->bcnt), d->expire); 154798943Sluigi switch (d->dyn_type) { 154898943Sluigi case O_LIMIT_PARENT: 154998943Sluigi printf(" PARENT %d", d->count); 155098943Sluigi break; 155198943Sluigi case O_LIMIT: 155298943Sluigi printf(" LIMIT"); 155398943Sluigi break; 155498943Sluigi case O_KEEP_STATE: /* bidir, no mask */ 1555106505Smaxim printf(" STATE"); 155698943Sluigi break; 155798943Sluigi } 155898943Sluigi 155998943Sluigi if ((pe = getprotobynumber(d->id.proto)) != NULL) 156098943Sluigi printf(" %s", pe->p_name); 156198943Sluigi else 156298943Sluigi printf(" proto %u", d->id.proto); 156398943Sluigi 1564159160Smlaier if (d->id.addr_type == 4) { 1565159160Smlaier a.s_addr = htonl(d->id.src_ip); 1566159160Smlaier printf(" %s %d", inet_ntoa(a), d->id.src_port); 156798943Sluigi 1568159160Smlaier a.s_addr = htonl(d->id.dst_ip); 1569159160Smlaier printf(" <-> %s %d", inet_ntoa(a), d->id.dst_port); 1570159160Smlaier } else if (d->id.addr_type == 6) { 1571159160Smlaier printf(" %s %d", inet_ntop(AF_INET6, &d->id.src_ip6, buf, 1572159160Smlaier sizeof(buf)), d->id.src_port); 1573159160Smlaier printf(" <-> %s %d", inet_ntop(AF_INET6, &d->id.dst_ip6, buf, 1574159160Smlaier sizeof(buf)), d->id.dst_port); 1575159160Smlaier } else 1576159160Smlaier printf(" UNKNOWN <-> UNKNOWN\n"); 1577159160Smlaier 157898943Sluigi printf("\n"); 157998943Sluigi} 158098943Sluigi 1581101978Sluigi/* 1582101978Sluigi * This one handles all set-related commands 1583101978Sluigi * ipfw set { show | enable | disable } 1584101978Sluigi * ipfw set swap X Y 1585101978Sluigi * ipfw set move X to Y 1586101978Sluigi * ipfw set move rule X to Y 1587101978Sluigi */ 1588187767Sluigivoid 1589187767Sluigiipfw_sets_handler(int ac, char *av[]) 1590101978Sluigi{ 1591117328Sluigi uint32_t set_disable, masks[2]; 1592101978Sluigi int i, nbytes; 1593117328Sluigi uint16_t rulenum; 1594117328Sluigi uint8_t cmd, new_set; 1595101978Sluigi 1596101978Sluigi ac--; 1597101978Sluigi av++; 1598101978Sluigi 1599101978Sluigi if (!ac) 1600101978Sluigi errx(EX_USAGE, "set needs command"); 1601140271Sbrooks if (_substrcmp(*av, "show") == 0) { 1602101978Sluigi void *data; 1603117469Sluigi char const *msg; 1604101978Sluigi 1605101978Sluigi nbytes = sizeof(struct ip_fw); 1606187716Sluigi data = safe_calloc(1, nbytes); 1607119740Stmm if (do_cmd(IP_FW_GET, data, (uintptr_t)&nbytes) < 0) 1608101978Sluigi err(EX_OSERR, "getsockopt(IP_FW_GET)"); 1609115793Sticso bcopy(&((struct ip_fw *)data)->next_rule, 1610115793Sticso &set_disable, sizeof(set_disable)); 1611101978Sluigi 1612117655Sluigi for (i = 0, msg = "disable" ; i < RESVD_SET; i++) 1613117577Sluigi if ((set_disable & (1<<i))) { 1614101978Sluigi printf("%s %d", msg, i); 1615101978Sluigi msg = ""; 1616101978Sluigi } 1617101978Sluigi msg = (set_disable) ? " enable" : "enable"; 1618117655Sluigi for (i = 0; i < RESVD_SET; i++) 1619117577Sluigi if (!(set_disable & (1<<i))) { 1620101978Sluigi printf("%s %d", msg, i); 1621101978Sluigi msg = ""; 1622101978Sluigi } 1623101978Sluigi printf("\n"); 1624140271Sbrooks } else if (_substrcmp(*av, "swap") == 0) { 1625101978Sluigi ac--; av++; 1626101978Sluigi if (ac != 2) 1627101978Sluigi errx(EX_USAGE, "set swap needs 2 set numbers\n"); 1628101978Sluigi rulenum = atoi(av[0]); 1629101978Sluigi new_set = atoi(av[1]); 1630117655Sluigi if (!isdigit(*(av[0])) || rulenum > RESVD_SET) 1631101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[0]); 1632117655Sluigi if (!isdigit(*(av[1])) || new_set > RESVD_SET) 1633101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[1]); 1634101978Sluigi masks[0] = (4 << 24) | (new_set << 16) | (rulenum); 1635117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(uint32_t)); 1636140271Sbrooks } else if (_substrcmp(*av, "move") == 0) { 1637101978Sluigi ac--; av++; 1638140271Sbrooks if (ac && _substrcmp(*av, "rule") == 0) { 1639101978Sluigi cmd = 2; 1640101978Sluigi ac--; av++; 1641101978Sluigi } else 1642101978Sluigi cmd = 3; 1643140271Sbrooks if (ac != 3 || _substrcmp(av[1], "to") != 0) 1644101978Sluigi errx(EX_USAGE, "syntax: set move [rule] X to Y\n"); 1645101978Sluigi rulenum = atoi(av[0]); 1646101978Sluigi new_set = atoi(av[2]); 1647117655Sluigi if (!isdigit(*(av[0])) || (cmd == 3 && rulenum > RESVD_SET) || 1648182823Srik (cmd == 2 && rulenum == IPFW_DEFAULT_RULE) ) 1649101978Sluigi errx(EX_DATAERR, "invalid source number %s\n", av[0]); 1650117655Sluigi if (!isdigit(*(av[2])) || new_set > RESVD_SET) 1651101978Sluigi errx(EX_DATAERR, "invalid dest. set %s\n", av[1]); 1652101978Sluigi masks[0] = (cmd << 24) | (new_set << 16) | (rulenum); 1653117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(uint32_t)); 1654140271Sbrooks } else if (_substrcmp(*av, "disable") == 0 || 1655140271Sbrooks _substrcmp(*av, "enable") == 0 ) { 1656140271Sbrooks int which = _substrcmp(*av, "enable") == 0 ? 1 : 0; 1657101978Sluigi 1658101978Sluigi ac--; av++; 1659101978Sluigi masks[0] = masks[1] = 0; 1660101978Sluigi 1661101978Sluigi while (ac) { 1662101978Sluigi if (isdigit(**av)) { 1663101978Sluigi i = atoi(*av); 1664117655Sluigi if (i < 0 || i > RESVD_SET) 1665101978Sluigi errx(EX_DATAERR, 1666101978Sluigi "invalid set number %d\n", i); 1667101978Sluigi masks[which] |= (1<<i); 1668140271Sbrooks } else if (_substrcmp(*av, "disable") == 0) 1669101978Sluigi which = 0; 1670140271Sbrooks else if (_substrcmp(*av, "enable") == 0) 1671101978Sluigi which = 1; 1672101978Sluigi else 1673101978Sluigi errx(EX_DATAERR, 1674101978Sluigi "invalid set command %s\n", *av); 1675101978Sluigi av++; ac--; 1676101978Sluigi } 1677101978Sluigi if ( (masks[0] & masks[1]) != 0 ) 1678101978Sluigi errx(EX_DATAERR, 1679101978Sluigi "cannot enable and disable the same set\n"); 1680101978Sluigi 1681117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(masks)); 1682101978Sluigi if (i) 1683101978Sluigi warn("set enable/disable: setsockopt(IP_FW_DEL)"); 1684101978Sluigi } else 1685101978Sluigi errx(EX_USAGE, "invalid set command %s\n", *av); 1686101978Sluigi} 1687101978Sluigi 1688187767Sluigivoid 1689187767Sluigiipfw_sysctl_handler(int ac, char *av[], int which) 1690109126Sdillon{ 1691109126Sdillon ac--; 1692109126Sdillon av++; 1693109126Sdillon 1694119668Smaxim if (ac == 0) { 1695109126Sdillon warnx("missing keyword to enable/disable\n"); 1696140271Sbrooks } else if (_substrcmp(*av, "firewall") == 0) { 1697116770Sluigi sysctlbyname("net.inet.ip.fw.enable", NULL, 0, 1698116770Sluigi &which, sizeof(which)); 1699140271Sbrooks } else if (_substrcmp(*av, "one_pass") == 0) { 1700116770Sluigi sysctlbyname("net.inet.ip.fw.one_pass", NULL, 0, 1701116770Sluigi &which, sizeof(which)); 1702140271Sbrooks } else if (_substrcmp(*av, "debug") == 0) { 1703116770Sluigi sysctlbyname("net.inet.ip.fw.debug", NULL, 0, 1704116770Sluigi &which, sizeof(which)); 1705140271Sbrooks } else if (_substrcmp(*av, "verbose") == 0) { 1706116770Sluigi sysctlbyname("net.inet.ip.fw.verbose", NULL, 0, 1707116770Sluigi &which, sizeof(which)); 1708140271Sbrooks } else if (_substrcmp(*av, "dyn_keepalive") == 0) { 1709116770Sluigi sysctlbyname("net.inet.ip.fw.dyn_keepalive", NULL, 0, 1710116770Sluigi &which, sizeof(which)); 1711140271Sbrooks } else if (_substrcmp(*av, "altq") == 0) { 1712136071Sgreen altq_set_enabled(which); 1713109126Sdillon } else { 1714109126Sdillon warnx("unrecognize enable/disable keyword: %s\n", *av); 1715109126Sdillon } 1716109126Sdillon} 1717109126Sdillon 1718187767Sluigivoid 1719187767Sluigiipfw_list(int ac, char *av[], int show_counters) 172098943Sluigi{ 172198943Sluigi struct ip_fw *r; 172298943Sluigi ipfw_dyn_rule *dynrules, *d; 172398943Sluigi 1724117469Sluigi#define NEXT(r) ((struct ip_fw *)((char *)r + RULESIZE(r))) 1725117469Sluigi char *lim; 1726117469Sluigi void *data = NULL; 1727112189Smaxim int bcwidth, n, nbytes, nstat, ndyn, pcwidth, width; 172898943Sluigi int exitval = EX_OK; 172998943Sluigi int lac; 173098943Sluigi char **lav; 1731117469Sluigi u_long rnum, last; 173298943Sluigi char *endptr; 173398943Sluigi int seen = 0; 1734170923Smaxim uint8_t set; 173598943Sluigi 1736187764Sluigi const int ocmd = co.do_pipe ? IP_DUMMYNET_GET : IP_FW_GET; 173798943Sluigi int nalloc = 1024; /* start somewhere... */ 173898943Sluigi 1739135036Smaxim last = 0; 1740135036Smaxim 1741187764Sluigi if (co.test_only) { 1742117328Sluigi fprintf(stderr, "Testing only, list disabled\n"); 1743117328Sluigi return; 1744117328Sluigi } 1745117328Sluigi 174698943Sluigi ac--; 174798943Sluigi av++; 174898943Sluigi 174998943Sluigi /* get rules or pipes from kernel, resizing array as necessary */ 175098943Sluigi nbytes = nalloc; 175198943Sluigi 175298943Sluigi while (nbytes >= nalloc) { 175398943Sluigi nalloc = nalloc * 2 + 200; 175498943Sluigi nbytes = nalloc; 1755187716Sluigi data = safe_realloc(data, nbytes); 1756119740Stmm if (do_cmd(ocmd, data, (uintptr_t)&nbytes) < 0) 175798943Sluigi err(EX_OSERR, "getsockopt(IP_%s_GET)", 1758187764Sluigi co.do_pipe ? "DUMMYNET" : "FW"); 175998943Sluigi } 176098943Sluigi 1761187764Sluigi if (co.do_pipe) { 1762187769Sluigi ipfw_list_pipes(data, nbytes, ac, av); 176398943Sluigi goto done; 176498943Sluigi } 176598943Sluigi 176698943Sluigi /* 176798943Sluigi * Count static rules. They have variable size so we 176898943Sluigi * need to scan the list to count them. 176998943Sluigi */ 1770117469Sluigi for (nstat = 1, r = data, lim = (char *)data + nbytes; 1771182823Srik r->rulenum < IPFW_DEFAULT_RULE && (char *)r < lim; 1772117469Sluigi ++nstat, r = NEXT(r) ) 177398943Sluigi ; /* nothing */ 177498943Sluigi 177598943Sluigi /* 177698943Sluigi * Count dynamic rules. This is easier as they have 177798943Sluigi * fixed size. 177898943Sluigi */ 1779117469Sluigi r = NEXT(r); 178098943Sluigi dynrules = (ipfw_dyn_rule *)r ; 1781117469Sluigi n = (char *)r - (char *)data; 178298943Sluigi ndyn = (nbytes - n) / sizeof *dynrules; 178398943Sluigi 1784112189Smaxim /* if showing stats, figure out column widths ahead of time */ 1785112189Smaxim bcwidth = pcwidth = 0; 1786117469Sluigi if (show_counters) { 1787117469Sluigi for (n = 0, r = data; n < nstat; n++, r = NEXT(r)) { 1788170923Smaxim /* skip rules from another set */ 1789187764Sluigi if (co.use_set && r->set != co.use_set - 1) 1790170923Smaxim continue; 1791170923Smaxim 1792112189Smaxim /* packet counter */ 1793115793Sticso width = snprintf(NULL, 0, "%llu", 1794115793Sticso align_uint64(&r->pcnt)); 1795112189Smaxim if (width > pcwidth) 1796112189Smaxim pcwidth = width; 1797112189Smaxim 1798112189Smaxim /* byte counter */ 1799115793Sticso width = snprintf(NULL, 0, "%llu", 1800115793Sticso align_uint64(&r->bcnt)); 1801112189Smaxim if (width > bcwidth) 1802112189Smaxim bcwidth = width; 1803112189Smaxim } 1804112189Smaxim } 1805187764Sluigi if (co.do_dynamic && ndyn) { 1806112189Smaxim for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1807187764Sluigi if (co.use_set) { 1808170923Smaxim /* skip rules from another set */ 1809171989Smaxim bcopy((char *)&d->rule + sizeof(uint16_t), 1810170923Smaxim &set, sizeof(uint8_t)); 1811187764Sluigi if (set != co.use_set - 1) 1812170923Smaxim continue; 1813170923Smaxim } 1814115793Sticso width = snprintf(NULL, 0, "%llu", 1815115793Sticso align_uint64(&d->pcnt)); 1816112189Smaxim if (width > pcwidth) 1817112189Smaxim pcwidth = width; 1818112189Smaxim 1819115793Sticso width = snprintf(NULL, 0, "%llu", 1820115793Sticso align_uint64(&d->bcnt)); 1821112189Smaxim if (width > bcwidth) 1822112189Smaxim bcwidth = width; 1823112189Smaxim } 1824112189Smaxim } 182598943Sluigi /* if no rule numbers were specified, list all rules */ 182698943Sluigi if (ac == 0) { 1827170923Smaxim for (n = 0, r = data; n < nstat; n++, r = NEXT(r)) { 1828187764Sluigi if (co.use_set && r->set != co.use_set - 1) 1829170923Smaxim continue; 1830112189Smaxim show_ipfw(r, pcwidth, bcwidth); 1831170923Smaxim } 183298943Sluigi 1833187764Sluigi if (co.do_dynamic && ndyn) { 183498943Sluigi printf("## Dynamic rules (%d):\n", ndyn); 1835170923Smaxim for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1836187764Sluigi if (co.use_set) { 1837171989Smaxim bcopy((char *)&d->rule + sizeof(uint16_t), 1838170923Smaxim &set, sizeof(uint8_t)); 1839187764Sluigi if (set != co.use_set - 1) 1840170923Smaxim continue; 1841170923Smaxim } 1842112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 184398943Sluigi } 1844170923Smaxim } 184598943Sluigi goto done; 184698943Sluigi } 184798943Sluigi 184898943Sluigi /* display specific rules requested on command line */ 184998943Sluigi 185098943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 185198943Sluigi /* convert command line rule # */ 1852117469Sluigi last = rnum = strtoul(*lav++, &endptr, 10); 1853117469Sluigi if (*endptr == '-') 1854117469Sluigi last = strtoul(endptr+1, &endptr, 10); 185598943Sluigi if (*endptr) { 185698943Sluigi exitval = EX_USAGE; 185798943Sluigi warnx("invalid rule number: %s", *(lav - 1)); 185898943Sluigi continue; 185998943Sluigi } 1860117469Sluigi for (n = seen = 0, r = data; n < nstat; n++, r = NEXT(r) ) { 1861117469Sluigi if (r->rulenum > last) 186298943Sluigi break; 1863187764Sluigi if (co.use_set && r->set != co.use_set - 1) 1864170923Smaxim continue; 1865117469Sluigi if (r->rulenum >= rnum && r->rulenum <= last) { 1866112189Smaxim show_ipfw(r, pcwidth, bcwidth); 186798943Sluigi seen = 1; 186898943Sluigi } 186998943Sluigi } 187098943Sluigi if (!seen) { 187198943Sluigi /* give precedence to other error(s) */ 187298943Sluigi if (exitval == EX_OK) 187398943Sluigi exitval = EX_UNAVAILABLE; 187498943Sluigi warnx("rule %lu does not exist", rnum); 187598943Sluigi } 187698943Sluigi } 187798943Sluigi 1878187764Sluigi if (co.do_dynamic && ndyn) { 187998943Sluigi printf("## Dynamic rules:\n"); 188098943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 1881145246Sbrooks last = rnum = strtoul(*lav++, &endptr, 10); 1882117469Sluigi if (*endptr == '-') 1883117469Sluigi last = strtoul(endptr+1, &endptr, 10); 188498943Sluigi if (*endptr) 188598943Sluigi /* already warned */ 188698943Sluigi continue; 188798943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1888115793Sticso uint16_t rulenum; 1889115793Sticso 1890115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 1891115793Sticso if (rulenum > rnum) 189298943Sluigi break; 1893187764Sluigi if (co.use_set) { 1894171989Smaxim bcopy((char *)&d->rule + sizeof(uint16_t), 1895170923Smaxim &set, sizeof(uint8_t)); 1896187764Sluigi if (set != co.use_set - 1) 1897170923Smaxim continue; 1898170923Smaxim } 1899117469Sluigi if (r->rulenum >= rnum && r->rulenum <= last) 1900112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 190198943Sluigi } 190298943Sluigi } 190398943Sluigi } 190498943Sluigi 190598943Sluigi ac = 0; 190698943Sluigi 190798943Sluigidone: 190898943Sluigi free(data); 190998943Sluigi 191098943Sluigi if (exitval != EX_OK) 191198943Sluigi exit(exitval); 1912117469Sluigi#undef NEXT 191398943Sluigi} 191498943Sluigi 191598943Sluigistatic int 191698943Sluigilookup_host (char *host, struct in_addr *ipaddr) 191798943Sluigi{ 191898943Sluigi struct hostent *he; 191998943Sluigi 192098943Sluigi if (!inet_aton(host, ipaddr)) { 192198943Sluigi if ((he = gethostbyname(host)) == NULL) 192298943Sluigi return(-1); 192398943Sluigi *ipaddr = *(struct in_addr *)he->h_addr_list[0]; 192498943Sluigi } 192598943Sluigi return(0); 192698943Sluigi} 192798943Sluigi 192898943Sluigi/* 192998943Sluigi * fills the addr and mask fields in the instruction as appropriate from av. 193098943Sluigi * Update length as appropriate. 193198943Sluigi * The following formats are allowed: 193298943Sluigi * me returns O_IP_*_ME 193398943Sluigi * 1.2.3.4 single IP address 193498943Sluigi * 1.2.3.4:5.6.7.8 address:mask 193598943Sluigi * 1.2.3.4/24 address/mask 193698943Sluigi * 1.2.3.4/26{1,6,5,4,23} set of addresses in a subnet 1937117328Sluigi * We can have multiple comma-separated address/mask entries. 193898943Sluigi */ 193998943Sluigistatic void 194098943Sluigifill_ip(ipfw_insn_ip *cmd, char *av) 194198943Sluigi{ 1942117328Sluigi int len = 0; 1943117328Sluigi uint32_t *d = ((ipfw_insn_u32 *)cmd)->d; 194498943Sluigi 194598943Sluigi cmd->o.len &= ~F_LEN_MASK; /* zero len */ 194698943Sluigi 1947140271Sbrooks if (_substrcmp(av, "any") == 0) 194898943Sluigi return; 194998943Sluigi 1950140271Sbrooks if (_substrcmp(av, "me") == 0) { 195198943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn); 195298943Sluigi return; 195398943Sluigi } 195498943Sluigi 1955140271Sbrooks if (strncmp(av, "table(", 6) == 0) { 1956130281Sru char *p = strchr(av + 6, ','); 1957130281Sru 1958130281Sru if (p) 1959130281Sru *p++ = '\0'; 1960130281Sru cmd->o.opcode = O_IP_DST_LOOKUP; 1961130281Sru cmd->o.arg1 = strtoul(av + 6, NULL, 0); 1962130281Sru if (p) { 1963130281Sru cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 1964130281Sru d[0] = strtoul(p, NULL, 0); 1965130281Sru } else 1966130281Sru cmd->o.len |= F_INSN_SIZE(ipfw_insn); 1967130281Sru return; 1968130281Sru } 1969130281Sru 1970117328Sluigi while (av) { 1971117328Sluigi /* 1972117328Sluigi * After the address we can have '/' or ':' indicating a mask, 1973117328Sluigi * ',' indicating another address follows, '{' indicating a 1974117328Sluigi * set of addresses of unspecified size. 1975117328Sluigi */ 1976165851Smlaier char *t = NULL, *p = strpbrk(av, "/:,{"); 1977117328Sluigi int masklen; 1978187477Sluigi char md, nd = '\0'; 1979117328Sluigi 198098943Sluigi if (p) { 198198943Sluigi md = *p; 198298943Sluigi *p++ = '\0'; 1983165851Smlaier if ((t = strpbrk(p, ",{")) != NULL) { 1984165851Smlaier nd = *t; 1985165851Smlaier *t = '\0'; 1986165851Smlaier } 1987117328Sluigi } else 1988117328Sluigi md = '\0'; 198998943Sluigi 1990117328Sluigi if (lookup_host(av, (struct in_addr *)&d[0]) != 0) 199198943Sluigi errx(EX_NOHOST, "hostname ``%s'' unknown", av); 199298943Sluigi switch (md) { 199398943Sluigi case ':': 1994117328Sluigi if (!inet_aton(p, (struct in_addr *)&d[1])) 199598943Sluigi errx(EX_DATAERR, "bad netmask ``%s''", p); 199698943Sluigi break; 199798943Sluigi case '/': 1998117328Sluigi masklen = atoi(p); 1999117328Sluigi if (masklen == 0) 2000117328Sluigi d[1] = htonl(0); /* mask */ 2001117328Sluigi else if (masklen > 32) 200298943Sluigi errx(EX_DATAERR, "bad width ``%s''", p); 200398943Sluigi else 2004117328Sluigi d[1] = htonl(~0 << (32 - masklen)); 200598943Sluigi break; 2006117328Sluigi case '{': /* no mask, assume /24 and put back the '{' */ 2007117328Sluigi d[1] = htonl(~0 << (32 - 24)); 2008117328Sluigi *(--p) = md; 2009117328Sluigi break; 2010117328Sluigi 2011117328Sluigi case ',': /* single address plus continuation */ 2012117328Sluigi *(--p) = md; 2013117328Sluigi /* FALLTHROUGH */ 2014117328Sluigi case 0: /* initialization value */ 201598943Sluigi default: 2016117328Sluigi d[1] = htonl(~0); /* force /32 */ 201798943Sluigi break; 201898943Sluigi } 2019117328Sluigi d[0] &= d[1]; /* mask base address with mask */ 2020165851Smlaier if (t) 2021165851Smlaier *t = nd; 2022117328Sluigi /* find next separator */ 202398943Sluigi if (p) 2024117328Sluigi p = strpbrk(p, ",{"); 2025117328Sluigi if (p && *p == '{') { 2026117328Sluigi /* 2027117328Sluigi * We have a set of addresses. They are stored as follows: 2028117328Sluigi * arg1 is the set size (powers of 2, 2..256) 2029117328Sluigi * addr is the base address IN HOST FORMAT 2030117328Sluigi * mask.. is an array of arg1 bits (rounded up to 2031117328Sluigi * the next multiple of 32) with bits set 2032117328Sluigi * for each host in the map. 2033117328Sluigi */ 2034117328Sluigi uint32_t *map = (uint32_t *)&cmd->mask; 203598943Sluigi int low, high; 2036117577Sluigi int i = contigmask((uint8_t *)&(d[1]), 32); 203798943Sluigi 2038117328Sluigi if (len > 0) 2039117328Sluigi errx(EX_DATAERR, "address set cannot be in a list"); 2040117328Sluigi if (i < 24 || i > 31) 2041117328Sluigi errx(EX_DATAERR, "invalid set with mask %d\n", i); 2042117328Sluigi cmd->o.arg1 = 1<<(32-i); /* map length */ 2043117328Sluigi d[0] = ntohl(d[0]); /* base addr in host format */ 204498943Sluigi cmd->o.opcode = O_IP_DST_SET; /* default */ 204598943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32) + (cmd->o.arg1+31)/32; 2046101117Sluigi for (i = 0; i < (cmd->o.arg1+31)/32 ; i++) 2047117328Sluigi map[i] = 0; /* clear map */ 204898943Sluigi 2049117328Sluigi av = p + 1; 2050117328Sluigi low = d[0] & 0xff; 205198943Sluigi high = low + cmd->o.arg1 - 1; 2052117328Sluigi /* 2053117328Sluigi * Here, i stores the previous value when we specify a range 2054117328Sluigi * of addresses within a mask, e.g. 45-63. i = -1 means we 2055117328Sluigi * have no previous value. 2056117328Sluigi */ 2057116716Sluigi i = -1; /* previous value in a range */ 205898943Sluigi while (isdigit(*av)) { 205998943Sluigi char *s; 2060117328Sluigi int a = strtol(av, &s, 0); 206198943Sluigi 2062117328Sluigi if (s == av) { /* no parameter */ 2063117328Sluigi if (*av != '}') 2064117328Sluigi errx(EX_DATAERR, "set not closed\n"); 2065117328Sluigi if (i != -1) 2066117328Sluigi errx(EX_DATAERR, "incomplete range %d-", i); 2067117328Sluigi break; 2068117328Sluigi } 2069117328Sluigi if (a < low || a > high) 2070117328Sluigi errx(EX_DATAERR, "addr %d out of range [%d-%d]\n", 207198943Sluigi a, low, high); 207298943Sluigi a -= low; 2073116716Sluigi if (i == -1) /* no previous in range */ 2074116716Sluigi i = a; 2075116716Sluigi else { /* check that range is valid */ 2076116716Sluigi if (i > a) 2077116716Sluigi errx(EX_DATAERR, "invalid range %d-%d", 2078116716Sluigi i+low, a+low); 2079116716Sluigi if (*s == '-') 2080116716Sluigi errx(EX_DATAERR, "double '-' in range"); 2081116716Sluigi } 2082116716Sluigi for (; i <= a; i++) 2083117328Sluigi map[i/32] |= 1<<(i & 31); 2084116716Sluigi i = -1; 2085116716Sluigi if (*s == '-') 2086116716Sluigi i = a; 2087117328Sluigi else if (*s == '}') 2088116716Sluigi break; 208998943Sluigi av = s+1; 209098943Sluigi } 209198943Sluigi return; 209298943Sluigi } 2093117328Sluigi av = p; 2094117328Sluigi if (av) /* then *av must be a ',' */ 2095117328Sluigi av++; 209698943Sluigi 2097117328Sluigi /* Check this entry */ 2098117328Sluigi if (d[1] == 0) { /* "any", specified as x.x.x.x/0 */ 2099117328Sluigi /* 2100117328Sluigi * 'any' turns the entire list into a NOP. 2101117328Sluigi * 'not any' never matches, so it is removed from the 2102117328Sluigi * list unless it is the only item, in which case we 2103117328Sluigi * report an error. 2104117328Sluigi */ 2105117328Sluigi if (cmd->o.len & F_NOT) { /* "not any" never matches */ 2106117328Sluigi if (av == NULL && len == 0) /* only this entry */ 2107117328Sluigi errx(EX_DATAERR, "not any never matches"); 2108117328Sluigi } 2109117328Sluigi /* else do nothing and skip this entry */ 2110128067Smaxim return; 2111117328Sluigi } 2112117328Sluigi /* A single IP can be stored in an optimized format */ 2113187762Sluigi if (d[1] == ~0 && av == NULL && len == 0) { 211498943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 2115117328Sluigi return; 2116117328Sluigi } 2117117328Sluigi len += 2; /* two words... */ 2118117328Sluigi d += 2; 2119117328Sluigi } /* end while */ 2120162363Sjhay if (len + 1 > F_LEN_MASK) 2121162363Sjhay errx(EX_DATAERR, "address list too long"); 2122117328Sluigi cmd->o.len |= len+1; 212398943Sluigi} 212498943Sluigi 212598943Sluigi 2126145246Sbrooks/* n2mask sets n bits of the mask */ 2127187769Sluigivoid 2128145246Sbrooksn2mask(struct in6_addr *mask, int n) 2129145246Sbrooks{ 2130145246Sbrooks static int minimask[9] = 2131145246Sbrooks { 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff }; 2132145246Sbrooks u_char *p; 2133145246Sbrooks 2134145246Sbrooks memset(mask, 0, sizeof(struct in6_addr)); 2135145246Sbrooks p = (u_char *) mask; 2136145246Sbrooks for (; n > 0; p++, n -= 8) { 2137145246Sbrooks if (n >= 8) 2138145246Sbrooks *p = 0xff; 2139145246Sbrooks else 2140145246Sbrooks *p = minimask[n]; 2141145246Sbrooks } 2142145246Sbrooks return; 2143145246Sbrooks} 2144145246Sbrooks 2145145246Sbrooks 214698943Sluigi/* 214798943Sluigi * helper function to process a set of flags and set bits in the 214898943Sluigi * appropriate masks. 214998943Sluigi */ 215098943Sluigistatic void 215198943Sluigifill_flags(ipfw_insn *cmd, enum ipfw_opcodes opcode, 215298943Sluigi struct _s_x *flags, char *p) 215398943Sluigi{ 2154117328Sluigi uint8_t set=0, clear=0; 215598943Sluigi 215698943Sluigi while (p && *p) { 215798943Sluigi char *q; /* points to the separator */ 215898943Sluigi int val; 2159117328Sluigi uint8_t *which; /* mask we are working on */ 216098943Sluigi 216198943Sluigi if (*p == '!') { 216298943Sluigi p++; 216398943Sluigi which = &clear; 216498943Sluigi } else 216598943Sluigi which = &set; 216698943Sluigi q = strchr(p, ','); 216798943Sluigi if (q) 216898943Sluigi *q++ = '\0'; 216998943Sluigi val = match_token(flags, p); 217098943Sluigi if (val <= 0) 217198943Sluigi errx(EX_DATAERR, "invalid flag %s", p); 2172117328Sluigi *which |= (uint8_t)val; 217398943Sluigi p = q; 217498943Sluigi } 217598943Sluigi cmd->opcode = opcode; 217698943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | 1; 217798943Sluigi cmd->arg1 = (set & 0xff) | ( (clear & 0xff) << 8); 217898943Sluigi} 217998943Sluigi 218098943Sluigi 2181187767Sluigivoid 2182187767Sluigiipfw_delete(int ac, char *av[]) 218398943Sluigi{ 2184117328Sluigi uint32_t rulenum; 218598943Sluigi int i; 218698943Sluigi int exitval = EX_OK; 2187101628Sluigi int do_set = 0; 218898943Sluigi 218998943Sluigi 219098943Sluigi av++; ac--; 2191130013Scsjp NEED1("missing rule specification"); 2192140271Sbrooks if (ac > 0 && _substrcmp(*av, "set") == 0) { 2193170923Smaxim /* Do not allow using the following syntax: 2194170923Smaxim * ipfw set N delete set M 2195170923Smaxim */ 2196187764Sluigi if (co.use_set) 2197170923Smaxim errx(EX_DATAERR, "invalid syntax"); 2198101978Sluigi do_set = 1; /* delete set */ 2199101628Sluigi ac--; av++; 2200101978Sluigi } 220198943Sluigi 220298943Sluigi /* Rule number */ 220398943Sluigi while (ac && isdigit(**av)) { 220498943Sluigi i = atoi(*av); av++; ac--; 2205187764Sluigi if (co.do_nat) { 2206165648Spiso exitval = do_cmd(IP_FW_NAT_DEL, &i, sizeof i); 2207165648Spiso if (exitval) { 2208165648Spiso exitval = EX_UNAVAILABLE; 2209165648Spiso warn("rule %u not available", i); 2210165648Spiso } 2211187764Sluigi } else if (co.do_pipe) { 2212187769Sluigi exitval = ipfw_delete_pipe(co.do_pipe, i); 221398943Sluigi } else { 2214187764Sluigi if (co.use_set) 2215170923Smaxim rulenum = (i & 0xffff) | (5 << 24) | 2216187764Sluigi ((co.use_set - 1) << 16); 2217170923Smaxim else 2218101978Sluigi rulenum = (i & 0xffff) | (do_set << 24); 2219117328Sluigi i = do_cmd(IP_FW_DEL, &rulenum, sizeof rulenum); 222098943Sluigi if (i) { 222198943Sluigi exitval = EX_UNAVAILABLE; 222298943Sluigi warn("rule %u: setsockopt(IP_FW_DEL)", 222398943Sluigi rulenum); 222498943Sluigi } 222598943Sluigi } 222698943Sluigi } 222798943Sluigi if (exitval != EX_OK) 222898943Sluigi exit(exitval); 222998943Sluigi} 223098943Sluigi 223198943Sluigi 223298943Sluigi/* 223398943Sluigi * fill the interface structure. We do not check the name as we can 223498943Sluigi * create interfaces dynamically, so checking them at insert time 223598943Sluigi * makes relatively little sense. 2236121816Sbrooks * Interface names containing '*', '?', or '[' are assumed to be shell 2237121816Sbrooks * patterns which match interfaces. 223898943Sluigi */ 223998943Sluigistatic void 224098943Sluigifill_iface(ipfw_insn_if *cmd, char *arg) 224198943Sluigi{ 224298943Sluigi cmd->name[0] = '\0'; 224398943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_if); 224498943Sluigi 224598943Sluigi /* Parse the interface or address */ 2246140271Sbrooks if (strcmp(arg, "any") == 0) 224798943Sluigi cmd->o.len = 0; /* effectively ignore this command */ 224898943Sluigi else if (!isdigit(*arg)) { 2249121816Sbrooks strlcpy(cmd->name, arg, sizeof(cmd->name)); 2250121816Sbrooks cmd->p.glob = strpbrk(arg, "*?[") != NULL ? 1 : 0; 225198943Sluigi } else if (!inet_aton(arg, &cmd->p.ip)) 225298943Sluigi errx(EX_DATAERR, "bad ip address ``%s''", arg); 225398943Sluigi} 225498943Sluigi 225598943Sluigistatic void 2256169424Smaximget_mac_addr_mask(const char *p, uint8_t *addr, uint8_t *mask) 225798943Sluigi{ 225898943Sluigi int i, l; 2259169424Smaxim char *ap, *ptr, *optr; 2260169424Smaxim struct ether_addr *mac; 2261169424Smaxim const char *macset = "0123456789abcdefABCDEF:"; 226298943Sluigi 2263169424Smaxim if (strcmp(p, "any") == 0) { 2264169424Smaxim for (i = 0; i < ETHER_ADDR_LEN; i++) 2265169424Smaxim addr[i] = mask[i] = 0; 226698943Sluigi return; 2267169424Smaxim } 226898943Sluigi 2269169424Smaxim optr = ptr = strdup(p); 2270169424Smaxim if ((ap = strsep(&ptr, "&/")) != NULL && *ap != 0) { 2271169424Smaxim l = strlen(ap); 2272169424Smaxim if (strspn(ap, macset) != l || (mac = ether_aton(ap)) == NULL) 2273169424Smaxim errx(EX_DATAERR, "Incorrect MAC address"); 2274169424Smaxim bcopy(mac, addr, ETHER_ADDR_LEN); 2275169424Smaxim } else 2276169424Smaxim errx(EX_DATAERR, "Incorrect MAC address"); 2277169424Smaxim 2278169424Smaxim if (ptr != NULL) { /* we have mask? */ 2279169424Smaxim if (p[ptr - optr - 1] == '/') { /* mask len */ 2280169424Smaxim l = strtol(ptr, &ap, 10); 2281169424Smaxim if (*ap != 0 || l > ETHER_ADDR_LEN * 8 || l < 0) 2282169424Smaxim errx(EX_DATAERR, "Incorrect mask length"); 2283169424Smaxim for (i = 0; l > 0 && i < ETHER_ADDR_LEN; l -= 8, i++) 2284169424Smaxim mask[i] = (l >= 8) ? 0xff: (~0) << (8 - l); 2285169424Smaxim } else { /* mask */ 2286169424Smaxim l = strlen(ptr); 2287169424Smaxim if (strspn(ptr, macset) != l || 2288169424Smaxim (mac = ether_aton(ptr)) == NULL) 2289169424Smaxim errx(EX_DATAERR, "Incorrect mask"); 2290169424Smaxim bcopy(mac, mask, ETHER_ADDR_LEN); 229198943Sluigi } 2292169424Smaxim } else { /* default mask: ff:ff:ff:ff:ff:ff */ 2293169424Smaxim for (i = 0; i < ETHER_ADDR_LEN; i++) 229498943Sluigi mask[i] = 0xff; 229598943Sluigi } 2296169424Smaxim for (i = 0; i < ETHER_ADDR_LEN; i++) 229798943Sluigi addr[i] &= mask[i]; 2298169424Smaxim 2299169424Smaxim free(optr); 230098943Sluigi} 230198943Sluigi 230298943Sluigi/* 230398943Sluigi * helper function, updates the pointer to cmd with the length 230498943Sluigi * of the current command, and also cleans up the first word of 230598943Sluigi * the new command in case it has been clobbered before. 230698943Sluigi */ 230798943Sluigistatic ipfw_insn * 230898943Sluiginext_cmd(ipfw_insn *cmd) 230998943Sluigi{ 231098943Sluigi cmd += F_LEN(cmd); 231198943Sluigi bzero(cmd, sizeof(*cmd)); 231298943Sluigi return cmd; 231398943Sluigi} 231498943Sluigi 231598943Sluigi/* 2316117469Sluigi * Takes arguments and copies them into a comment 2317117469Sluigi */ 2318117469Sluigistatic void 2319117469Sluigifill_comment(ipfw_insn *cmd, int ac, char **av) 2320117469Sluigi{ 2321117469Sluigi int i, l; 2322117469Sluigi char *p = (char *)(cmd + 1); 2323117577Sluigi 2324117469Sluigi cmd->opcode = O_NOP; 2325117469Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)); 2326117469Sluigi 2327117469Sluigi /* Compute length of comment string. */ 2328117469Sluigi for (i = 0, l = 0; i < ac; i++) 2329117469Sluigi l += strlen(av[i]) + 1; 2330117469Sluigi if (l == 0) 2331117469Sluigi return; 2332117469Sluigi if (l > 84) 2333117469Sluigi errx(EX_DATAERR, 2334117469Sluigi "comment too long (max 80 chars)"); 2335117469Sluigi l = 1 + (l+3)/4; 2336117469Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | l; 2337117469Sluigi for (i = 0; i < ac; i++) { 2338117469Sluigi strcpy(p, av[i]); 2339117469Sluigi p += strlen(av[i]); 2340117469Sluigi *p++ = ' '; 2341117469Sluigi } 2342117469Sluigi *(--p) = '\0'; 2343117469Sluigi} 2344117577Sluigi 2345117469Sluigi/* 234698943Sluigi * A function to fill simple commands of size 1. 234798943Sluigi * Existing flags are preserved. 234898943Sluigi */ 234998943Sluigistatic void 2350117328Sluigifill_cmd(ipfw_insn *cmd, enum ipfw_opcodes opcode, int flags, uint16_t arg) 235198943Sluigi{ 235298943Sluigi cmd->opcode = opcode; 235398943Sluigi cmd->len = ((cmd->len | flags) & (F_NOT | F_OR)) | 1; 235498943Sluigi cmd->arg1 = arg; 235598943Sluigi} 235698943Sluigi 235798943Sluigi/* 235898943Sluigi * Fetch and add the MAC address and type, with masks. This generates one or 235998943Sluigi * two microinstructions, and returns the pointer to the last one. 236098943Sluigi */ 236198943Sluigistatic ipfw_insn * 236298943Sluigiadd_mac(ipfw_insn *cmd, int ac, char *av[]) 236398943Sluigi{ 2364102087Sluigi ipfw_insn_mac *mac; 236598943Sluigi 2366102087Sluigi if (ac < 2) 2367102098Sluigi errx(EX_DATAERR, "MAC dst src"); 236898943Sluigi 236998943Sluigi cmd->opcode = O_MACADDR2; 237098943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | F_INSN_SIZE(ipfw_insn_mac); 237198943Sluigi 237298943Sluigi mac = (ipfw_insn_mac *)cmd; 2373101978Sluigi get_mac_addr_mask(av[0], mac->addr, mac->mask); /* dst */ 2374169424Smaxim get_mac_addr_mask(av[1], &(mac->addr[ETHER_ADDR_LEN]), 2375169424Smaxim &(mac->mask[ETHER_ADDR_LEN])); /* src */ 2376102087Sluigi return cmd; 2377102087Sluigi} 237898943Sluigi 2379102087Sluigistatic ipfw_insn * 2380102087Sluigiadd_mactype(ipfw_insn *cmd, int ac, char *av) 2381102087Sluigi{ 2382102087Sluigi if (ac < 1) 2383102087Sluigi errx(EX_DATAERR, "missing MAC type"); 2384102087Sluigi if (strcmp(av, "any") != 0) { /* we have a non-null type */ 2385102087Sluigi fill_newports((ipfw_insn_u16 *)cmd, av, IPPROTO_ETHERTYPE); 238698943Sluigi cmd->opcode = O_MAC_TYPE; 2387102087Sluigi return cmd; 2388102087Sluigi } else 2389102087Sluigi return NULL; 2390102087Sluigi} 239198943Sluigi 2392102087Sluigistatic ipfw_insn * 2393152923Sumeadd_proto0(ipfw_insn *cmd, char *av, u_char *protop) 2394102087Sluigi{ 2395102087Sluigi struct protoent *pe; 2396152923Sume char *ep; 2397152923Sume int proto; 2398102087Sluigi 2399156315Sume proto = strtol(av, &ep, 10); 2400156315Sume if (*ep != '\0' || proto <= 0) { 2401152923Sume if ((pe = getprotobyname(av)) == NULL) 2402152923Sume return NULL; 2403152923Sume proto = pe->p_proto; 2404152923Sume } 2405145246Sbrooks 2406152923Sume fill_cmd(cmd, O_PROTO, 0, proto); 2407152923Sume *protop = proto; 2408152923Sume return cmd; 2409152923Sume} 2410152923Sume 2411152923Sumestatic ipfw_insn * 2412152923Sumeadd_proto(ipfw_insn *cmd, char *av, u_char *protop) 2413152923Sume{ 2414152923Sume u_char proto = IPPROTO_IP; 2415152923Sume 2416156315Sume if (_substrcmp(av, "all") == 0 || strcmp(av, "ip") == 0) 2417146894Smlaier ; /* do not set O_IP4 nor O_IP6 */ 2418152923Sume else if (strcmp(av, "ip4") == 0) 2419152923Sume /* explicit "just IPv4" rule */ 2420152923Sume fill_cmd(cmd, O_IP4, 0, 0); 2421152923Sume else if (strcmp(av, "ip6") == 0) { 2422152923Sume /* explicit "just IPv6" rule */ 2423152923Sume proto = IPPROTO_IPV6; 2424152923Sume fill_cmd(cmd, O_IP6, 0, 0); 2425152923Sume } else 2426152923Sume return add_proto0(cmd, av, protop); 2427152923Sume 2428152923Sume *protop = proto; 2429152923Sume return cmd; 2430152923Sume} 2431152923Sume 2432152923Sumestatic ipfw_insn * 2433152923Sumeadd_proto_compat(ipfw_insn *cmd, char *av, u_char *protop) 2434152923Sume{ 2435152923Sume u_char proto = IPPROTO_IP; 2436152923Sume 2437152923Sume if (_substrcmp(av, "all") == 0 || strcmp(av, "ip") == 0) 2438152923Sume ; /* do not set O_IP4 nor O_IP6 */ 2439146894Smlaier else if (strcmp(av, "ipv4") == 0 || strcmp(av, "ip4") == 0) 2440146894Smlaier /* explicit "just IPv4" rule */ 2441146894Smlaier fill_cmd(cmd, O_IP4, 0, 0); 2442146894Smlaier else if (strcmp(av, "ipv6") == 0 || strcmp(av, "ip6") == 0) { 2443146894Smlaier /* explicit "just IPv6" rule */ 2444152923Sume proto = IPPROTO_IPV6; 2445146894Smlaier fill_cmd(cmd, O_IP6, 0, 0); 2446152923Sume } else 2447152923Sume return add_proto0(cmd, av, protop); 2448145246Sbrooks 2449152923Sume *protop = proto; 245098943Sluigi return cmd; 245198943Sluigi} 245298943Sluigi 2453102087Sluigistatic ipfw_insn * 2454102087Sluigiadd_srcip(ipfw_insn *cmd, char *av) 2455102087Sluigi{ 2456102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2457102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2458102087Sluigi cmd->opcode = O_IP_SRC_SET; 2459130281Sru else if (cmd->opcode == O_IP_DST_LOOKUP) /* table */ 2460130281Sru cmd->opcode = O_IP_SRC_LOOKUP; 2461102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2462102087Sluigi cmd->opcode = O_IP_SRC_ME; 2463102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2464102087Sluigi cmd->opcode = O_IP_SRC; 2465117328Sluigi else /* addr/mask */ 2466102087Sluigi cmd->opcode = O_IP_SRC_MASK; 2467102087Sluigi return cmd; 2468102087Sluigi} 2469102087Sluigi 2470102087Sluigistatic ipfw_insn * 2471102087Sluigiadd_dstip(ipfw_insn *cmd, char *av) 2472102087Sluigi{ 2473102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2474102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2475102087Sluigi ; 2476130281Sru else if (cmd->opcode == O_IP_DST_LOOKUP) /* table */ 2477130281Sru ; 2478102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2479102087Sluigi cmd->opcode = O_IP_DST_ME; 2480102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2481102087Sluigi cmd->opcode = O_IP_DST; 2482117328Sluigi else /* addr/mask */ 2483102087Sluigi cmd->opcode = O_IP_DST_MASK; 2484102087Sluigi return cmd; 2485102087Sluigi} 2486102087Sluigi 2487102087Sluigistatic ipfw_insn * 2488102087Sluigiadd_ports(ipfw_insn *cmd, char *av, u_char proto, int opcode) 2489102087Sluigi{ 2490140271Sbrooks if (_substrcmp(av, "any") == 0) { 2491102087Sluigi return NULL; 2492102087Sluigi } else if (fill_newports((ipfw_insn_u16 *)cmd, av, proto)) { 2493102087Sluigi /* XXX todo: check that we have a protocol with ports */ 2494102087Sluigi cmd->opcode = opcode; 2495102087Sluigi return cmd; 2496102087Sluigi } 2497102087Sluigi return NULL; 2498102087Sluigi} 2499102087Sluigi 2500145246Sbrooksstatic ipfw_insn * 2501145246Sbrooksadd_src(ipfw_insn *cmd, char *av, u_char proto) 2502145246Sbrooks{ 2503145246Sbrooks struct in6_addr a; 2504158553Smlaier char *host, *ch; 2505158553Smlaier ipfw_insn *ret = NULL; 2506145246Sbrooks 2507158553Smlaier if ((host = strdup(av)) == NULL) 2508158553Smlaier return NULL; 2509158553Smlaier if ((ch = strrchr(host, '/')) != NULL) 2510158553Smlaier *ch = '\0'; 2511158553Smlaier 2512145246Sbrooks if (proto == IPPROTO_IPV6 || strcmp(av, "me6") == 0 || 2513158553Smlaier inet_pton(AF_INET6, host, &a)) 2514158553Smlaier ret = add_srcip6(cmd, av); 2515145246Sbrooks /* XXX: should check for IPv4, not !IPv6 */ 2516161483Sdwmalone if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 || 2517161483Sdwmalone !inet_pton(AF_INET6, host, &a))) 2518158553Smlaier ret = add_srcip(cmd, av); 2519161483Sdwmalone if (ret == NULL && strcmp(av, "any") != 0) 2520158553Smlaier ret = cmd; 2521145246Sbrooks 2522158553Smlaier free(host); 2523158553Smlaier return ret; 2524145246Sbrooks} 2525145246Sbrooks 2526145246Sbrooksstatic ipfw_insn * 2527145246Sbrooksadd_dst(ipfw_insn *cmd, char *av, u_char proto) 2528145246Sbrooks{ 2529145246Sbrooks struct in6_addr a; 2530158553Smlaier char *host, *ch; 2531158553Smlaier ipfw_insn *ret = NULL; 2532145246Sbrooks 2533158553Smlaier if ((host = strdup(av)) == NULL) 2534158553Smlaier return NULL; 2535158553Smlaier if ((ch = strrchr(host, '/')) != NULL) 2536158553Smlaier *ch = '\0'; 2537158553Smlaier 2538145246Sbrooks if (proto == IPPROTO_IPV6 || strcmp(av, "me6") == 0 || 2539158553Smlaier inet_pton(AF_INET6, host, &a)) 2540158553Smlaier ret = add_dstip6(cmd, av); 2541145246Sbrooks /* XXX: should check for IPv4, not !IPv6 */ 2542161483Sdwmalone if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 || 2543161483Sdwmalone !inet_pton(AF_INET6, host, &a))) 2544158553Smlaier ret = add_dstip(cmd, av); 2545161483Sdwmalone if (ret == NULL && strcmp(av, "any") != 0) 2546158553Smlaier ret = cmd; 2547145246Sbrooks 2548158553Smlaier free(host); 2549158553Smlaier return ret; 2550145246Sbrooks} 2551145246Sbrooks 255298943Sluigi/* 255398943Sluigi * Parse arguments and assemble the microinstructions which make up a rule. 255498943Sluigi * Rules are added into the 'rulebuf' and then copied in the correct order 255598943Sluigi * into the actual rule. 255698943Sluigi * 2557136071Sgreen * The syntax for a rule starts with the action, followed by 2558136071Sgreen * optional action parameters, and the various match patterns. 2559108533Sschweikh * In the assembled microcode, the first opcode must be an O_PROBE_STATE 256098943Sluigi * (generated if the rule includes a keep-state option), then the 2561136071Sgreen * various match patterns, log/altq actions, and the actual action. 2562106505Smaxim * 256398943Sluigi */ 2564187767Sluigivoid 2565187767Sluigiipfw_add(int ac, char *av[]) 256698943Sluigi{ 256798943Sluigi /* 256898943Sluigi * rules are added into the 'rulebuf' and then copied in 256998943Sluigi * the correct order into the actual rule. 257098943Sluigi * Some things that need to go out of order (prob, action etc.) 257198943Sluigi * go into actbuf[]. 257298943Sluigi */ 2573117328Sluigi static uint32_t rulebuf[255], actbuf[255], cmdbuf[255]; 257498943Sluigi 2575117469Sluigi ipfw_insn *src, *dst, *cmd, *action, *prev=NULL; 2576102087Sluigi ipfw_insn *first_cmd; /* first match pattern */ 257798943Sluigi 257898943Sluigi struct ip_fw *rule; 257998943Sluigi 258098943Sluigi /* 258198943Sluigi * various flags used to record that we entered some fields. 258298943Sluigi */ 2583101116Sluigi ipfw_insn *have_state = NULL; /* check-state or keep-state */ 2584158879Soleg ipfw_insn *have_log = NULL, *have_altq = NULL, *have_tag = NULL; 2585134475Smaxim size_t len; 258698943Sluigi 258798943Sluigi int i; 258898943Sluigi 258998943Sluigi int open_par = 0; /* open parenthesis ( */ 259098943Sluigi 259198943Sluigi /* proto is here because it is used to fetch ports */ 259298943Sluigi u_char proto = IPPROTO_IP; /* default protocol */ 259398943Sluigi 2594107289Sluigi double match_prob = 1; /* match probability, default is always match */ 2595107289Sluigi 259698943Sluigi bzero(actbuf, sizeof(actbuf)); /* actions go here */ 259798943Sluigi bzero(cmdbuf, sizeof(cmdbuf)); 259898943Sluigi bzero(rulebuf, sizeof(rulebuf)); 259998943Sluigi 260098943Sluigi rule = (struct ip_fw *)rulebuf; 260198943Sluigi cmd = (ipfw_insn *)cmdbuf; 260298943Sluigi action = (ipfw_insn *)actbuf; 260398943Sluigi 260498943Sluigi av++; ac--; 260598943Sluigi 260698943Sluigi /* [rule N] -- Rule number optional */ 260798943Sluigi if (ac && isdigit(**av)) { 260898943Sluigi rule->rulenum = atoi(*av); 260998943Sluigi av++; 261098943Sluigi ac--; 261198943Sluigi } 261298943Sluigi 2613117655Sluigi /* [set N] -- set number (0..RESVD_SET), optional */ 2614140271Sbrooks if (ac > 1 && _substrcmp(*av, "set") == 0) { 2615101628Sluigi int set = strtoul(av[1], NULL, 10); 2616117655Sluigi if (set < 0 || set > RESVD_SET) 2617101628Sluigi errx(EX_DATAERR, "illegal set %s", av[1]); 2618101628Sluigi rule->set = set; 2619101628Sluigi av += 2; ac -= 2; 2620101628Sluigi } 2621101628Sluigi 262298943Sluigi /* [prob D] -- match probability, optional */ 2623140271Sbrooks if (ac > 1 && _substrcmp(*av, "prob") == 0) { 2624107289Sluigi match_prob = strtod(av[1], NULL); 262598943Sluigi 2626107289Sluigi if (match_prob <= 0 || match_prob > 1) 262798943Sluigi errx(EX_DATAERR, "illegal match prob. %s", av[1]); 262898943Sluigi av += 2; ac -= 2; 262998943Sluigi } 263098943Sluigi 263198943Sluigi /* action -- mandatory */ 263298943Sluigi NEED1("missing action"); 263398943Sluigi i = match_token(rule_actions, *av); 263498943Sluigi ac--; av++; 263598943Sluigi action->len = 1; /* default */ 263698943Sluigi switch(i) { 263798943Sluigi case TOK_CHECKSTATE: 2638101116Sluigi have_state = action; 263998943Sluigi action->opcode = O_CHECK_STATE; 264098943Sluigi break; 264198943Sluigi 264298943Sluigi case TOK_ACCEPT: 264398943Sluigi action->opcode = O_ACCEPT; 264498943Sluigi break; 264598943Sluigi 264698943Sluigi case TOK_DENY: 264798943Sluigi action->opcode = O_DENY; 264899475Sluigi action->arg1 = 0; 264998943Sluigi break; 265098943Sluigi 265199475Sluigi case TOK_REJECT: 265299475Sluigi action->opcode = O_REJECT; 265399475Sluigi action->arg1 = ICMP_UNREACH_HOST; 265499475Sluigi break; 265599475Sluigi 265699475Sluigi case TOK_RESET: 265799475Sluigi action->opcode = O_REJECT; 265899475Sluigi action->arg1 = ICMP_REJECT_RST; 265999475Sluigi break; 266099475Sluigi 2661149020Sbz case TOK_RESET6: 2662149020Sbz action->opcode = O_UNREACH6; 2663149020Sbz action->arg1 = ICMP6_UNREACH_RST; 2664149020Sbz break; 2665149020Sbz 266699475Sluigi case TOK_UNREACH: 266799475Sluigi action->opcode = O_REJECT; 266899475Sluigi NEED1("missing reject code"); 266999475Sluigi fill_reject_code(&action->arg1, *av); 267099475Sluigi ac--; av++; 267199475Sluigi break; 267299475Sluigi 2673149020Sbz case TOK_UNREACH6: 2674149020Sbz action->opcode = O_UNREACH6; 2675149020Sbz NEED1("missing unreach code"); 2676149020Sbz fill_unreach6_code(&action->arg1, *av); 2677149020Sbz ac--; av++; 2678149020Sbz break; 2679149020Sbz 268098943Sluigi case TOK_COUNT: 268198943Sluigi action->opcode = O_COUNT; 268298943Sluigi break; 268398943Sluigi 2684176517Spiso case TOK_NAT: 2685176517Spiso action->opcode = O_NAT; 2686176517Spiso action->len = F_INSN_SIZE(ipfw_insn_nat); 2687176517Spiso goto chkarg; 2688178888Sjulian 268998943Sluigi case TOK_QUEUE: 2690153374Sglebius action->opcode = O_QUEUE; 2691153374Sglebius goto chkarg; 269298943Sluigi case TOK_PIPE: 2693153374Sglebius action->opcode = O_PIPE; 2694153374Sglebius goto chkarg; 269598943Sluigi case TOK_SKIPTO: 2696153374Sglebius action->opcode = O_SKIPTO; 2697153374Sglebius goto chkarg; 2698153374Sglebius case TOK_NETGRAPH: 2699153374Sglebius action->opcode = O_NETGRAPH; 2700153374Sglebius goto chkarg; 2701153374Sglebius case TOK_NGTEE: 2702153374Sglebius action->opcode = O_NGTEE; 2703153374Sglebius goto chkarg; 270498943Sluigi case TOK_DIVERT: 2705153374Sglebius action->opcode = O_DIVERT; 2706153374Sglebius goto chkarg; 270798943Sluigi case TOK_TEE: 2708153374Sglebius action->opcode = O_TEE; 2709153374Sglebiuschkarg: 2710153374Sglebius if (!ac) 2711153374Sglebius errx(EX_USAGE, "missing argument for %s", *(av - 1)); 2712153374Sglebius if (isdigit(**av)) { 2713153374Sglebius action->arg1 = strtoul(*av, NULL, 10); 2714153374Sglebius if (action->arg1 <= 0 || action->arg1 >= IP_FW_TABLEARG) 2715153374Sglebius errx(EX_DATAERR, "illegal argument for %s", 2716153374Sglebius *(av - 1)); 2717187762Sluigi } else if (_substrcmp(*av, "tablearg") == 0) { 2718153374Sglebius action->arg1 = IP_FW_TABLEARG; 2719153374Sglebius } else if (i == TOK_DIVERT || i == TOK_TEE) { 272098943Sluigi struct servent *s; 272198943Sluigi setservent(1); 272298943Sluigi s = getservbyname(av[0], "divert"); 272398943Sluigi if (s != NULL) 272498943Sluigi action->arg1 = ntohs(s->s_port); 272598943Sluigi else 272698943Sluigi errx(EX_DATAERR, "illegal divert/tee port"); 2727153374Sglebius } else 2728153374Sglebius errx(EX_DATAERR, "illegal argument for %s", *(av - 1)); 272998943Sluigi ac--; av++; 273098943Sluigi break; 273198943Sluigi 273298943Sluigi case TOK_FORWARD: { 273398943Sluigi ipfw_insn_sa *p = (ipfw_insn_sa *)action; 273498943Sluigi char *s, *end; 273598943Sluigi 273698943Sluigi NEED1("missing forward address[:port]"); 273798943Sluigi 273898943Sluigi action->opcode = O_FORWARD_IP; 273998943Sluigi action->len = F_INSN_SIZE(ipfw_insn_sa); 274098943Sluigi 2741188005Sluigi /* 2742188005Sluigi * In the kernel we assume AF_INET and use only 2743188005Sluigi * sin_port and sin_addr. 2744188005Sluigi */ 274598943Sluigi p->sa.sin_family = AF_INET; 274698943Sluigi p->sa.sin_port = 0; 274798943Sluigi /* 274898943Sluigi * locate the address-port separator (':' or ',') 274998943Sluigi */ 275098943Sluigi s = strchr(*av, ':'); 275198943Sluigi if (s == NULL) 275298943Sluigi s = strchr(*av, ','); 275398943Sluigi if (s != NULL) { 275498943Sluigi *(s++) = '\0'; 275598943Sluigi i = strtoport(s, &end, 0 /* base */, 0 /* proto */); 275698943Sluigi if (s == end) 275798943Sluigi errx(EX_DATAERR, 275898943Sluigi "illegal forwarding port ``%s''", s); 2759103241Sluigi p->sa.sin_port = (u_short)i; 276098943Sluigi } 2761161456Sjulian if (_substrcmp(*av, "tablearg") == 0) 2762161456Sjulian p->sa.sin_addr.s_addr = INADDR_ANY; 2763161456Sjulian else 2764161424Sjulian lookup_host(*av, &(p->sa.sin_addr)); 276598943Sluigi ac--; av++; 276698943Sluigi break; 2767161424Sjulian } 2768117469Sluigi case TOK_COMMENT: 2769117469Sluigi /* pretend it is a 'count' rule followed by the comment */ 2770117469Sluigi action->opcode = O_COUNT; 2771117469Sluigi ac++; av--; /* go back... */ 2772117469Sluigi break; 2773178888Sjulian 2774178888Sjulian case TOK_SETFIB: 2775178888Sjulian { 2776178888Sjulian int numfibs; 2777178916Sjulian size_t intsize = sizeof(int); 2778178888Sjulian 2779178888Sjulian action->opcode = O_SETFIB; 2780178888Sjulian NEED1("missing fib number"); 2781178888Sjulian action->arg1 = strtoul(*av, NULL, 10); 2782178916Sjulian if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1) 2783178888Sjulian errx(EX_DATAERR, "fibs not suported.\n"); 2784178888Sjulian if (action->arg1 >= numfibs) /* Temporary */ 2785178888Sjulian errx(EX_DATAERR, "fib too large.\n"); 2786178888Sjulian ac--; av++; 2787178888Sjulian break; 2788178888Sjulian } 2789190633Spiso 2790190633Spiso case TOK_REASS: 2791190633Spiso action->opcode = O_REASS; 2792190633Spiso break; 2793165648Spiso 279498943Sluigi default: 2795102087Sluigi errx(EX_DATAERR, "invalid action %s\n", av[-1]); 279698943Sluigi } 279798943Sluigi action = next_cmd(action); 279898943Sluigi 279998943Sluigi /* 2800136071Sgreen * [altq queuename] -- altq tag, optional 280198943Sluigi * [log [logamount N]] -- log, optional 280298943Sluigi * 2803136071Sgreen * If they exist, it go first in the cmdbuf, but then it is 280498943Sluigi * skipped in the copy section to the end of the buffer. 280598943Sluigi */ 2806136071Sgreen while (ac != 0 && (i = match_token(rule_action_params, *av)) != -1) { 2807136071Sgreen ac--; av++; 2808136071Sgreen switch (i) { 2809136071Sgreen case TOK_LOG: 2810136071Sgreen { 2811136071Sgreen ipfw_insn_log *c = (ipfw_insn_log *)cmd; 2812136071Sgreen int l; 281398943Sluigi 2814136071Sgreen if (have_log) 2815136071Sgreen errx(EX_DATAERR, 2816136071Sgreen "log cannot be specified more than once"); 2817136071Sgreen have_log = (ipfw_insn *)c; 2818136071Sgreen cmd->len = F_INSN_SIZE(ipfw_insn_log); 2819136071Sgreen cmd->opcode = O_LOG; 2820140271Sbrooks if (ac && _substrcmp(*av, "logamount") == 0) { 2821136071Sgreen ac--; av++; 2822136071Sgreen NEED1("logamount requires argument"); 2823136071Sgreen l = atoi(*av); 2824136071Sgreen if (l < 0) 2825136071Sgreen errx(EX_DATAERR, 2826136071Sgreen "logamount must be positive"); 2827136071Sgreen c->max_log = l; 2828136071Sgreen ac--; av++; 2829136071Sgreen } else { 2830136071Sgreen len = sizeof(c->max_log); 2831136071Sgreen if (sysctlbyname("net.inet.ip.fw.verbose_limit", 2832136071Sgreen &c->max_log, &len, NULL, 0) == -1) 2833136071Sgreen errx(1, "sysctlbyname(\"%s\")", 2834136071Sgreen "net.inet.ip.fw.verbose_limit"); 2835136071Sgreen } 2836136071Sgreen } 2837136071Sgreen break; 2838136071Sgreen 2839136071Sgreen case TOK_ALTQ: 2840136071Sgreen { 2841136071Sgreen ipfw_insn_altq *a = (ipfw_insn_altq *)cmd; 2842136071Sgreen 2843136071Sgreen NEED1("missing altq queue name"); 2844136071Sgreen if (have_altq) 2845136071Sgreen errx(EX_DATAERR, 2846136071Sgreen "altq cannot be specified more than once"); 2847136071Sgreen have_altq = (ipfw_insn *)a; 2848136071Sgreen cmd->len = F_INSN_SIZE(ipfw_insn_altq); 2849136071Sgreen cmd->opcode = O_ALTQ; 2850187983Sluigi a->qid = altq_name_to_qid(*av); 285198943Sluigi ac--; av++; 2852136071Sgreen } 2853136071Sgreen break; 2854136071Sgreen 2855158879Soleg case TOK_TAG: 2856159636Soleg case TOK_UNTAG: { 2857159636Soleg uint16_t tag; 2858159636Soleg 2859158879Soleg if (have_tag) 2860159636Soleg errx(EX_USAGE, "tag and untag cannot be " 2861159636Soleg "specified more than once"); 2862182823Srik GET_UINT_ARG(tag, 1, IPFW_DEFAULT_RULE - 1, i, 2863182823Srik rule_action_params); 2864158879Soleg have_tag = cmd; 2865159636Soleg fill_cmd(cmd, O_TAG, (i == TOK_TAG) ? 0: F_NOT, tag); 2866158879Soleg ac--; av++; 2867158879Soleg break; 2868159636Soleg } 2869158879Soleg 2870136071Sgreen default: 2871136071Sgreen abort(); 287298943Sluigi } 287398943Sluigi cmd = next_cmd(cmd); 287498943Sluigi } 287598943Sluigi 2876101116Sluigi if (have_state) /* must be a check-state, we are done */ 287798943Sluigi goto done; 287898943Sluigi 287998943Sluigi#define OR_START(target) \ 288098943Sluigi if (ac && (*av[0] == '(' || *av[0] == '{')) { \ 288198943Sluigi if (open_par) \ 288298943Sluigi errx(EX_USAGE, "nested \"(\" not allowed\n"); \ 2883101641Sluigi prev = NULL; \ 288498943Sluigi open_par = 1; \ 288598943Sluigi if ( (av[0])[1] == '\0') { \ 288698943Sluigi ac--; av++; \ 288798943Sluigi } else \ 288898943Sluigi (*av)++; \ 288998943Sluigi } \ 289098943Sluigi target: \ 289198943Sluigi 289298943Sluigi 289398943Sluigi#define CLOSE_PAR \ 289498943Sluigi if (open_par) { \ 289598943Sluigi if (ac && ( \ 2896140271Sbrooks strcmp(*av, ")") == 0 || \ 2897140271Sbrooks strcmp(*av, "}") == 0)) { \ 2898101641Sluigi prev = NULL; \ 289998943Sluigi open_par = 0; \ 290098943Sluigi ac--; av++; \ 290198943Sluigi } else \ 290298943Sluigi errx(EX_USAGE, "missing \")\"\n"); \ 290398943Sluigi } 2904106505Smaxim 290598943Sluigi#define NOT_BLOCK \ 2906140271Sbrooks if (ac && _substrcmp(*av, "not") == 0) { \ 290798943Sluigi if (cmd->len & F_NOT) \ 290898943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); \ 290998943Sluigi cmd->len |= F_NOT; \ 291098943Sluigi ac--; av++; \ 291198943Sluigi } 291298943Sluigi 291398943Sluigi#define OR_BLOCK(target) \ 2914140271Sbrooks if (ac && _substrcmp(*av, "or") == 0) { \ 291598943Sluigi if (prev == NULL || open_par == 0) \ 291698943Sluigi errx(EX_DATAERR, "invalid OR block"); \ 291798943Sluigi prev->len |= F_OR; \ 291898943Sluigi ac--; av++; \ 291998943Sluigi goto target; \ 292098943Sluigi } \ 292198943Sluigi CLOSE_PAR; 292298943Sluigi 2923102087Sluigi first_cmd = cmd; 2924102098Sluigi 2925102098Sluigi#if 0 292698943Sluigi /* 2927102087Sluigi * MAC addresses, optional. 2928102087Sluigi * If we have this, we skip the part "proto from src to dst" 2929102087Sluigi * and jump straight to the option parsing. 2930102087Sluigi */ 2931102087Sluigi NOT_BLOCK; 2932102087Sluigi NEED1("missing protocol"); 2933140271Sbrooks if (_substrcmp(*av, "MAC") == 0 || 2934140271Sbrooks _substrcmp(*av, "mac") == 0) { 2935102087Sluigi ac--; av++; /* the "MAC" keyword */ 2936102087Sluigi add_mac(cmd, ac, av); /* exits in case of errors */ 2937102087Sluigi cmd = next_cmd(cmd); 2938102087Sluigi ac -= 2; av += 2; /* dst-mac and src-mac */ 2939102087Sluigi NOT_BLOCK; 2940102087Sluigi NEED1("missing mac type"); 2941102087Sluigi if (add_mactype(cmd, ac, av[0])) 2942102087Sluigi cmd = next_cmd(cmd); 2943102087Sluigi ac--; av++; /* any or mac-type */ 2944102087Sluigi goto read_options; 2945102087Sluigi } 2946102098Sluigi#endif 2947102087Sluigi 2948102087Sluigi /* 294998943Sluigi * protocol, mandatory 295098943Sluigi */ 295198943Sluigi OR_START(get_proto); 295298943Sluigi NOT_BLOCK; 295398943Sluigi NEED1("missing protocol"); 2954152923Sume if (add_proto_compat(cmd, *av, &proto)) { 2955102087Sluigi av++; ac--; 2956147105Smlaier if (F_LEN(cmd) != 0) { 2957102087Sluigi prev = cmd; 2958102087Sluigi cmd = next_cmd(cmd); 2959102087Sluigi } 2960102098Sluigi } else if (first_cmd != cmd) { 2961116438Smaxim errx(EX_DATAERR, "invalid protocol ``%s''", *av); 2962102098Sluigi } else 2963102098Sluigi goto read_options; 296498943Sluigi OR_BLOCK(get_proto); 296598943Sluigi 296698943Sluigi /* 2967102087Sluigi * "from", mandatory 296898943Sluigi */ 2969140271Sbrooks if (!ac || _substrcmp(*av, "from") != 0) 297098943Sluigi errx(EX_USAGE, "missing ``from''"); 297198943Sluigi ac--; av++; 297298943Sluigi 297398943Sluigi /* 297498943Sluigi * source IP, mandatory 297598943Sluigi */ 297698943Sluigi OR_START(source_ip); 297798943Sluigi NOT_BLOCK; /* optional "not" */ 297898943Sluigi NEED1("missing source address"); 2979145246Sbrooks if (add_src(cmd, *av, proto)) { 2980102087Sluigi ac--; av++; 2981102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 2982102087Sluigi prev = cmd; 2983102087Sluigi cmd = next_cmd(cmd); 2984102087Sluigi } 2985145246Sbrooks } else 2986145246Sbrooks errx(EX_USAGE, "bad source address %s", *av); 298798943Sluigi OR_BLOCK(source_ip); 298898943Sluigi 298998943Sluigi /* 299098943Sluigi * source ports, optional 299198943Sluigi */ 299298943Sluigi NOT_BLOCK; /* optional "not" */ 2993101641Sluigi if (ac) { 2994140271Sbrooks if (_substrcmp(*av, "any") == 0 || 2995102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 2996102087Sluigi ac--; av++; 2997102087Sluigi if (F_LEN(cmd) != 0) 2998102087Sluigi cmd = next_cmd(cmd); 2999101641Sluigi } 300098943Sluigi } 300198943Sluigi 300298943Sluigi /* 3003102087Sluigi * "to", mandatory 300498943Sluigi */ 3005140271Sbrooks if (!ac || _substrcmp(*av, "to") != 0) 300698943Sluigi errx(EX_USAGE, "missing ``to''"); 300798943Sluigi av++; ac--; 300898943Sluigi 300998943Sluigi /* 301098943Sluigi * destination, mandatory 301198943Sluigi */ 301298943Sluigi OR_START(dest_ip); 301398943Sluigi NOT_BLOCK; /* optional "not" */ 301498943Sluigi NEED1("missing dst address"); 3015145246Sbrooks if (add_dst(cmd, *av, proto)) { 3016102087Sluigi ac--; av++; 3017102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 3018102087Sluigi prev = cmd; 3019102087Sluigi cmd = next_cmd(cmd); 3020102087Sluigi } 3021145246Sbrooks } else 3022145246Sbrooks errx( EX_USAGE, "bad destination address %s", *av); 302398943Sluigi OR_BLOCK(dest_ip); 302498943Sluigi 302598943Sluigi /* 302698943Sluigi * dest. ports, optional 302798943Sluigi */ 302898943Sluigi NOT_BLOCK; /* optional "not" */ 3029101641Sluigi if (ac) { 3030140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3031102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 3032102087Sluigi ac--; av++; 3033102087Sluigi if (F_LEN(cmd) != 0) 3034102087Sluigi cmd = next_cmd(cmd); 3035101641Sluigi } 303698943Sluigi } 303798943Sluigi 303898943Sluigiread_options: 3039102087Sluigi if (ac && first_cmd == cmd) { 3040102087Sluigi /* 3041102087Sluigi * nothing specified so far, store in the rule to ease 3042102087Sluigi * printout later. 3043102087Sluigi */ 3044102087Sluigi rule->_pad = 1; 3045102087Sluigi } 304698943Sluigi prev = NULL; 304798943Sluigi while (ac) { 3048101641Sluigi char *s; 3049101641Sluigi ipfw_insn_u32 *cmd32; /* alias for cmd */ 305098943Sluigi 3051101641Sluigi s = *av; 3052101641Sluigi cmd32 = (ipfw_insn_u32 *)cmd; 3053101641Sluigi 305498943Sluigi if (*s == '!') { /* alternate syntax for NOT */ 305598943Sluigi if (cmd->len & F_NOT) 305698943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 305798943Sluigi cmd->len = F_NOT; 305898943Sluigi s++; 305998943Sluigi } 306098943Sluigi i = match_token(rule_options, s); 306198943Sluigi ac--; av++; 306298943Sluigi switch(i) { 306398943Sluigi case TOK_NOT: 306498943Sluigi if (cmd->len & F_NOT) 306598943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 306698943Sluigi cmd->len = F_NOT; 306798943Sluigi break; 306898943Sluigi 306998943Sluigi case TOK_OR: 3070101641Sluigi if (open_par == 0 || prev == NULL) 307198943Sluigi errx(EX_USAGE, "invalid \"or\" block\n"); 307298943Sluigi prev->len |= F_OR; 307398943Sluigi break; 3074101641Sluigi 3075101641Sluigi case TOK_STARTBRACE: 3076101641Sluigi if (open_par) 3077101641Sluigi errx(EX_USAGE, "+nested \"(\" not allowed\n"); 3078101641Sluigi open_par = 1; 3079101641Sluigi break; 3080101641Sluigi 3081101641Sluigi case TOK_ENDBRACE: 3082101641Sluigi if (!open_par) 3083101641Sluigi errx(EX_USAGE, "+missing \")\"\n"); 3084101641Sluigi open_par = 0; 3085102087Sluigi prev = NULL; 3086101641Sluigi break; 3087101641Sluigi 308898943Sluigi case TOK_IN: 308998943Sluigi fill_cmd(cmd, O_IN, 0, 0); 309098943Sluigi break; 309198943Sluigi 309298943Sluigi case TOK_OUT: 309398943Sluigi cmd->len ^= F_NOT; /* toggle F_NOT */ 309498943Sluigi fill_cmd(cmd, O_IN, 0, 0); 309598943Sluigi break; 309698943Sluigi 3097136073Sgreen case TOK_DIVERTED: 3098136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 3); 3099136073Sgreen break; 3100136073Sgreen 3101136073Sgreen case TOK_DIVERTEDLOOPBACK: 3102136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 1); 3103136073Sgreen break; 3104136073Sgreen 3105136073Sgreen case TOK_DIVERTEDOUTPUT: 3106136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 2); 3107136073Sgreen break; 3108136073Sgreen 310998943Sluigi case TOK_FRAG: 311098943Sluigi fill_cmd(cmd, O_FRAG, 0, 0); 311198943Sluigi break; 311298943Sluigi 311398943Sluigi case TOK_LAYER2: 311498943Sluigi fill_cmd(cmd, O_LAYER2, 0, 0); 311598943Sluigi break; 311698943Sluigi 311798943Sluigi case TOK_XMIT: 311898943Sluigi case TOK_RECV: 311998943Sluigi case TOK_VIA: 312098943Sluigi NEED1("recv, xmit, via require interface name" 312198943Sluigi " or address"); 312298943Sluigi fill_iface((ipfw_insn_if *)cmd, av[0]); 312398943Sluigi ac--; av++; 312498943Sluigi if (F_LEN(cmd) == 0) /* not a valid address */ 312598943Sluigi break; 312698943Sluigi if (i == TOK_XMIT) 312798943Sluigi cmd->opcode = O_XMIT; 312898943Sluigi else if (i == TOK_RECV) 312998943Sluigi cmd->opcode = O_RECV; 313098943Sluigi else if (i == TOK_VIA) 313198943Sluigi cmd->opcode = O_VIA; 313298943Sluigi break; 313398943Sluigi 313499475Sluigi case TOK_ICMPTYPES: 313599475Sluigi NEED1("icmptypes requires list of types"); 313699475Sluigi fill_icmptypes((ipfw_insn_u32 *)cmd, *av); 313799475Sluigi av++; ac--; 313899475Sluigi break; 3139145246Sbrooks 3140145246Sbrooks case TOK_ICMP6TYPES: 3141145246Sbrooks NEED1("icmptypes requires list of types"); 3142145246Sbrooks fill_icmp6types((ipfw_insn_icmp6 *)cmd, *av); 3143145246Sbrooks av++; ac--; 3144145246Sbrooks break; 314599475Sluigi 314698943Sluigi case TOK_IPTTL: 314798943Sluigi NEED1("ipttl requires TTL"); 3148116690Sluigi if (strpbrk(*av, "-,")) { 3149116690Sluigi if (!add_ports(cmd, *av, 0, O_IPTTL)) 3150116690Sluigi errx(EX_DATAERR, "invalid ipttl %s", *av); 3151116690Sluigi } else 3152116690Sluigi fill_cmd(cmd, O_IPTTL, 0, strtoul(*av, NULL, 0)); 315398943Sluigi ac--; av++; 315498943Sluigi break; 315598943Sluigi 315698943Sluigi case TOK_IPID: 3157116690Sluigi NEED1("ipid requires id"); 3158116690Sluigi if (strpbrk(*av, "-,")) { 3159116690Sluigi if (!add_ports(cmd, *av, 0, O_IPID)) 3160116690Sluigi errx(EX_DATAERR, "invalid ipid %s", *av); 3161116690Sluigi } else 3162116690Sluigi fill_cmd(cmd, O_IPID, 0, strtoul(*av, NULL, 0)); 316398943Sluigi ac--; av++; 316498943Sluigi break; 316598943Sluigi 316698943Sluigi case TOK_IPLEN: 316798943Sluigi NEED1("iplen requires length"); 3168116690Sluigi if (strpbrk(*av, "-,")) { 3169116690Sluigi if (!add_ports(cmd, *av, 0, O_IPLEN)) 3170116690Sluigi errx(EX_DATAERR, "invalid ip len %s", *av); 3171116690Sluigi } else 3172116690Sluigi fill_cmd(cmd, O_IPLEN, 0, strtoul(*av, NULL, 0)); 317398943Sluigi ac--; av++; 317498943Sluigi break; 317598943Sluigi 317698943Sluigi case TOK_IPVER: 317798943Sluigi NEED1("ipver requires version"); 317898943Sluigi fill_cmd(cmd, O_IPVER, 0, strtoul(*av, NULL, 0)); 317998943Sluigi ac--; av++; 318098943Sluigi break; 318198943Sluigi 318299475Sluigi case TOK_IPPRECEDENCE: 318399475Sluigi NEED1("ipprecedence requires value"); 318499475Sluigi fill_cmd(cmd, O_IPPRECEDENCE, 0, 318599475Sluigi (strtoul(*av, NULL, 0) & 7) << 5); 318699475Sluigi ac--; av++; 318799475Sluigi break; 318899475Sluigi 318998943Sluigi case TOK_IPOPTS: 319098943Sluigi NEED1("missing argument for ipoptions"); 3191101116Sluigi fill_flags(cmd, O_IPOPT, f_ipopts, *av); 319298943Sluigi ac--; av++; 319398943Sluigi break; 319498943Sluigi 319599475Sluigi case TOK_IPTOS: 319699475Sluigi NEED1("missing argument for iptos"); 3197101116Sluigi fill_flags(cmd, O_IPTOS, f_iptos, *av); 319899475Sluigi ac--; av++; 319999475Sluigi break; 320099475Sluigi 320198943Sluigi case TOK_UID: 320298943Sluigi NEED1("uid requires argument"); 320398943Sluigi { 320498943Sluigi char *end; 320598943Sluigi uid_t uid; 320698943Sluigi struct passwd *pwd; 320798943Sluigi 320898943Sluigi cmd->opcode = O_UID; 320998943Sluigi uid = strtoul(*av, &end, 0); 321098943Sluigi pwd = (*end == '\0') ? getpwuid(uid) : getpwnam(*av); 321198943Sluigi if (pwd == NULL) 321298943Sluigi errx(EX_DATAERR, "uid \"%s\" nonexistent", *av); 3213106504Smaxim cmd32->d[0] = pwd->pw_uid; 3214135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 321598943Sluigi ac--; av++; 321698943Sluigi } 321798943Sluigi break; 321898943Sluigi 321998943Sluigi case TOK_GID: 322098943Sluigi NEED1("gid requires argument"); 322198943Sluigi { 322298943Sluigi char *end; 322398943Sluigi gid_t gid; 322498943Sluigi struct group *grp; 322598943Sluigi 322698943Sluigi cmd->opcode = O_GID; 322798943Sluigi gid = strtoul(*av, &end, 0); 322898943Sluigi grp = (*end == '\0') ? getgrgid(gid) : getgrnam(*av); 322998943Sluigi if (grp == NULL) 323098943Sluigi errx(EX_DATAERR, "gid \"%s\" nonexistent", *av); 3231106504Smaxim cmd32->d[0] = grp->gr_gid; 3232135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 323398943Sluigi ac--; av++; 323498943Sluigi } 323598943Sluigi break; 323698943Sluigi 3237133600Scsjp case TOK_JAIL: 3238133600Scsjp NEED1("jail requires argument"); 3239133600Scsjp { 3240133600Scsjp char *end; 3241133600Scsjp int jid; 3242133600Scsjp 3243133600Scsjp cmd->opcode = O_JAIL; 3244133600Scsjp jid = (int)strtol(*av, &end, 0); 3245133600Scsjp if (jid < 0 || *end != '\0') 3246133600Scsjp errx(EX_DATAERR, "jail requires prison ID"); 3247135554Scsjp cmd32->d[0] = (uint32_t)jid; 3248135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 3249133600Scsjp ac--; av++; 3250133600Scsjp } 3251133600Scsjp break; 3252133600Scsjp 325398943Sluigi case TOK_ESTAB: 325498943Sluigi fill_cmd(cmd, O_ESTAB, 0, 0); 325598943Sluigi break; 325698943Sluigi 325798943Sluigi case TOK_SETUP: 325898943Sluigi fill_cmd(cmd, O_TCPFLAGS, 0, 325998943Sluigi (TH_SYN) | ( (TH_ACK) & 0xff) <<8 ); 326098943Sluigi break; 326198943Sluigi 3262136075Sgreen case TOK_TCPDATALEN: 3263136075Sgreen NEED1("tcpdatalen requires length"); 3264136075Sgreen if (strpbrk(*av, "-,")) { 3265136075Sgreen if (!add_ports(cmd, *av, 0, O_TCPDATALEN)) 3266136075Sgreen errx(EX_DATAERR, "invalid tcpdata len %s", *av); 3267136075Sgreen } else 3268136075Sgreen fill_cmd(cmd, O_TCPDATALEN, 0, 3269136075Sgreen strtoul(*av, NULL, 0)); 3270136075Sgreen ac--; av++; 3271136075Sgreen break; 3272136075Sgreen 327398943Sluigi case TOK_TCPOPTS: 327498943Sluigi NEED1("missing argument for tcpoptions"); 327598943Sluigi fill_flags(cmd, O_TCPOPTS, f_tcpopts, *av); 327698943Sluigi ac--; av++; 327798943Sluigi break; 327898943Sluigi 327998943Sluigi case TOK_TCPSEQ: 328098943Sluigi case TOK_TCPACK: 328198943Sluigi NEED1("tcpseq/tcpack requires argument"); 328298943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 328398943Sluigi cmd->opcode = (i == TOK_TCPSEQ) ? O_TCPSEQ : O_TCPACK; 328498943Sluigi cmd32->d[0] = htonl(strtoul(*av, NULL, 0)); 328598943Sluigi ac--; av++; 328698943Sluigi break; 328798943Sluigi 328898943Sluigi case TOK_TCPWIN: 328998943Sluigi NEED1("tcpwin requires length"); 329098943Sluigi fill_cmd(cmd, O_TCPWIN, 0, 329198943Sluigi htons(strtoul(*av, NULL, 0))); 329298943Sluigi ac--; av++; 329398943Sluigi break; 329498943Sluigi 329598943Sluigi case TOK_TCPFLAGS: 329698943Sluigi NEED1("missing argument for tcpflags"); 329798943Sluigi cmd->opcode = O_TCPFLAGS; 329898943Sluigi fill_flags(cmd, O_TCPFLAGS, f_tcpflags, *av); 329998943Sluigi ac--; av++; 330098943Sluigi break; 330198943Sluigi 330298943Sluigi case TOK_KEEPSTATE: 3303101641Sluigi if (open_par) 3304101641Sluigi errx(EX_USAGE, "keep-state cannot be part " 3305101641Sluigi "of an or block"); 330699909Sluigi if (have_state) 3307101116Sluigi errx(EX_USAGE, "only one of keep-state " 330899909Sluigi "and limit is allowed"); 3309101116Sluigi have_state = cmd; 331098943Sluigi fill_cmd(cmd, O_KEEP_STATE, 0, 0); 331198943Sluigi break; 331298943Sluigi 3313159636Soleg case TOK_LIMIT: { 3314159636Soleg ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 3315159636Soleg int val; 3316159636Soleg 3317101641Sluigi if (open_par) 3318159636Soleg errx(EX_USAGE, 3319159636Soleg "limit cannot be part of an or block"); 332099909Sluigi if (have_state) 3321168819Smaxim errx(EX_USAGE, "only one of keep-state and " 3322159636Soleg "limit is allowed"); 3323101116Sluigi have_state = cmd; 332498943Sluigi 332598943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_limit); 332698943Sluigi cmd->opcode = O_LIMIT; 3327159636Soleg c->limit_mask = c->conn_limit = 0; 332898943Sluigi 3329159636Soleg while (ac > 0) { 3330159636Soleg if ((val = match_token(limit_masks, *av)) <= 0) 333198943Sluigi break; 333298943Sluigi c->limit_mask |= val; 333398943Sluigi ac--; av++; 333498943Sluigi } 3335159636Soleg 333698943Sluigi if (c->limit_mask == 0) 3337159636Soleg errx(EX_USAGE, "limit: missing limit mask"); 3338159636Soleg 3339182823Srik GET_UINT_ARG(c->conn_limit, 1, IPFW_DEFAULT_RULE - 1, 3340182823Srik TOK_LIMIT, rule_options); 3341159636Soleg 334298943Sluigi ac--; av++; 334398943Sluigi break; 3344159636Soleg } 334598943Sluigi 3346102087Sluigi case TOK_PROTO: 3347102087Sluigi NEED1("missing protocol"); 3348145246Sbrooks if (add_proto(cmd, *av, &proto)) { 3349102087Sluigi ac--; av++; 3350102098Sluigi } else 3351116438Smaxim errx(EX_DATAERR, "invalid protocol ``%s''", 3352116438Smaxim *av); 3353102087Sluigi break; 3354106505Smaxim 3355102087Sluigi case TOK_SRCIP: 3356102087Sluigi NEED1("missing source IP"); 3357102087Sluigi if (add_srcip(cmd, *av)) { 3358102087Sluigi ac--; av++; 3359102087Sluigi } 3360102087Sluigi break; 3361102087Sluigi 3362102087Sluigi case TOK_DSTIP: 3363102087Sluigi NEED1("missing destination IP"); 3364102087Sluigi if (add_dstip(cmd, *av)) { 3365102087Sluigi ac--; av++; 3366102087Sluigi } 3367102087Sluigi break; 3368102087Sluigi 3369145246Sbrooks case TOK_SRCIP6: 3370145246Sbrooks NEED1("missing source IP6"); 3371145246Sbrooks if (add_srcip6(cmd, *av)) { 3372145246Sbrooks ac--; av++; 3373145246Sbrooks } 3374145246Sbrooks break; 3375145246Sbrooks 3376145246Sbrooks case TOK_DSTIP6: 3377145246Sbrooks NEED1("missing destination IP6"); 3378145246Sbrooks if (add_dstip6(cmd, *av)) { 3379145246Sbrooks ac--; av++; 3380145246Sbrooks } 3381145246Sbrooks break; 3382145246Sbrooks 3383102087Sluigi case TOK_SRCPORT: 3384102087Sluigi NEED1("missing source port"); 3385140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3386102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 3387102087Sluigi ac--; av++; 3388102087Sluigi } else 3389102087Sluigi errx(EX_DATAERR, "invalid source port %s", *av); 3390102087Sluigi break; 3391102087Sluigi 3392102087Sluigi case TOK_DSTPORT: 3393102087Sluigi NEED1("missing destination port"); 3394140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3395102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 3396102087Sluigi ac--; av++; 3397102087Sluigi } else 3398102087Sluigi errx(EX_DATAERR, "invalid destination port %s", 3399102087Sluigi *av); 3400102087Sluigi break; 3401102087Sluigi 3402102087Sluigi case TOK_MAC: 3403102087Sluigi if (add_mac(cmd, ac, av)) { 3404102087Sluigi ac -= 2; av += 2; 3405102087Sluigi } 3406102087Sluigi break; 3407102087Sluigi 3408102087Sluigi case TOK_MACTYPE: 3409102087Sluigi NEED1("missing mac type"); 3410102087Sluigi if (!add_mactype(cmd, ac, *av)) 3411116438Smaxim errx(EX_DATAERR, "invalid mac type %s", *av); 3412102087Sluigi ac--; av++; 3413102087Sluigi break; 3414102087Sluigi 3415112250Scjc case TOK_VERREVPATH: 3416112250Scjc fill_cmd(cmd, O_VERREVPATH, 0, 0); 3417112250Scjc break; 3418116919Sluigi 3419128575Sandre case TOK_VERSRCREACH: 3420128575Sandre fill_cmd(cmd, O_VERSRCREACH, 0, 0); 3421128575Sandre break; 3422128575Sandre 3423133387Sandre case TOK_ANTISPOOF: 3424133387Sandre fill_cmd(cmd, O_ANTISPOOF, 0, 0); 3425133387Sandre break; 3426133387Sandre 3427117241Sluigi case TOK_IPSEC: 3428117241Sluigi fill_cmd(cmd, O_IPSEC, 0, 0); 3429117241Sluigi break; 3430117241Sluigi 3431145246Sbrooks case TOK_IPV6: 3432145246Sbrooks fill_cmd(cmd, O_IP6, 0, 0); 3433145246Sbrooks break; 3434145246Sbrooks 3435146894Smlaier case TOK_IPV4: 3436146894Smlaier fill_cmd(cmd, O_IP4, 0, 0); 3437146894Smlaier break; 3438146894Smlaier 3439145246Sbrooks case TOK_EXT6HDR: 3440145246Sbrooks fill_ext6hdr( cmd, *av ); 3441145246Sbrooks ac--; av++; 3442145246Sbrooks break; 3443145246Sbrooks 3444145246Sbrooks case TOK_FLOWID: 3445145246Sbrooks if (proto != IPPROTO_IPV6 ) 3446145246Sbrooks errx( EX_USAGE, "flow-id filter is active " 3447145246Sbrooks "only for ipv6 protocol\n"); 3448145246Sbrooks fill_flow6( (ipfw_insn_u32 *) cmd, *av ); 3449145246Sbrooks ac--; av++; 3450145246Sbrooks break; 3451145246Sbrooks 3452117469Sluigi case TOK_COMMENT: 3453117469Sluigi fill_comment(cmd, ac, av); 3454117469Sluigi av += ac; 3455117469Sluigi ac = 0; 3456117469Sluigi break; 3457117469Sluigi 3458158879Soleg case TOK_TAGGED: 3459159636Soleg if (ac > 0 && strpbrk(*av, "-,")) { 3460158879Soleg if (!add_ports(cmd, *av, 0, O_TAGGED)) 3461159636Soleg errx(EX_DATAERR, "tagged: invalid tag" 3462159636Soleg " list: %s", *av); 3463158879Soleg } 3464159636Soleg else { 3465159636Soleg uint16_t tag; 3466159636Soleg 3467182823Srik GET_UINT_ARG(tag, 1, IPFW_DEFAULT_RULE - 1, 3468182823Srik TOK_TAGGED, rule_options); 3469159636Soleg fill_cmd(cmd, O_TAGGED, 0, tag); 3470159636Soleg } 3471158879Soleg ac--; av++; 3472158879Soleg break; 3473158879Soleg 3474178888Sjulian case TOK_FIB: 3475178888Sjulian NEED1("fib requires fib number"); 3476178888Sjulian fill_cmd(cmd, O_FIB, 0, strtoul(*av, NULL, 0)); 3477178888Sjulian ac--; av++; 3478178888Sjulian break; 3479178888Sjulian 348098943Sluigi default: 348198943Sluigi errx(EX_USAGE, "unrecognised option [%d] %s\n", i, s); 348298943Sluigi } 348398943Sluigi if (F_LEN(cmd) > 0) { /* prepare to advance */ 348498943Sluigi prev = cmd; 348598943Sluigi cmd = next_cmd(cmd); 348698943Sluigi } 348798943Sluigi } 348898943Sluigi 348998943Sluigidone: 349098943Sluigi /* 349198943Sluigi * Now copy stuff into the rule. 349298943Sluigi * If we have a keep-state option, the first instruction 349398943Sluigi * must be a PROBE_STATE (which is generated here). 349498943Sluigi * If we have a LOG option, it was stored as the first command, 349598943Sluigi * and now must be moved to the top of the action part. 349698943Sluigi */ 349798943Sluigi dst = (ipfw_insn *)rule->cmd; 349898943Sluigi 349998943Sluigi /* 3500107289Sluigi * First thing to write into the command stream is the match probability. 3501107289Sluigi */ 3502107289Sluigi if (match_prob != 1) { /* 1 means always match */ 3503107289Sluigi dst->opcode = O_PROB; 3504107289Sluigi dst->len = 2; 3505107289Sluigi *((int32_t *)(dst+1)) = (int32_t)(match_prob * 0x7fffffff); 3506107289Sluigi dst += dst->len; 3507107289Sluigi } 3508107289Sluigi 3509107289Sluigi /* 351098943Sluigi * generate O_PROBE_STATE if necessary 351198943Sluigi */ 3512101116Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 351398943Sluigi fill_cmd(dst, O_PROBE_STATE, 0, 0); 351498943Sluigi dst = next_cmd(dst); 351598943Sluigi } 3516158879Soleg 3517158879Soleg /* copy all commands but O_LOG, O_KEEP_STATE, O_LIMIT, O_ALTQ, O_TAG */ 351898943Sluigi for (src = (ipfw_insn *)cmdbuf; src != cmd; src += i) { 351998943Sluigi i = F_LEN(src); 352098943Sluigi 3521101116Sluigi switch (src->opcode) { 3522101116Sluigi case O_LOG: 3523101116Sluigi case O_KEEP_STATE: 3524101116Sluigi case O_LIMIT: 3525136071Sgreen case O_ALTQ: 3526158879Soleg case O_TAG: 3527101116Sluigi break; 3528101116Sluigi default: 3529117328Sluigi bcopy(src, dst, i * sizeof(uint32_t)); 353098943Sluigi dst += i; 353198943Sluigi } 353298943Sluigi } 353398943Sluigi 353498943Sluigi /* 3535101116Sluigi * put back the have_state command as last opcode 3536101116Sluigi */ 3537101295Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 3538101116Sluigi i = F_LEN(have_state); 3539117328Sluigi bcopy(have_state, dst, i * sizeof(uint32_t)); 3540101116Sluigi dst += i; 3541101116Sluigi } 3542101116Sluigi /* 354398943Sluigi * start action section 354498943Sluigi */ 354598943Sluigi rule->act_ofs = dst - rule->cmd; 354698943Sluigi 3547158879Soleg /* put back O_LOG, O_ALTQ, O_TAG if necessary */ 3548136071Sgreen if (have_log) { 3549136071Sgreen i = F_LEN(have_log); 3550136071Sgreen bcopy(have_log, dst, i * sizeof(uint32_t)); 355198943Sluigi dst += i; 355298943Sluigi } 3553136071Sgreen if (have_altq) { 3554136071Sgreen i = F_LEN(have_altq); 3555136071Sgreen bcopy(have_altq, dst, i * sizeof(uint32_t)); 3556136071Sgreen dst += i; 3557136071Sgreen } 3558158879Soleg if (have_tag) { 3559158879Soleg i = F_LEN(have_tag); 3560158879Soleg bcopy(have_tag, dst, i * sizeof(uint32_t)); 3561158879Soleg dst += i; 3562158879Soleg } 356398943Sluigi /* 356498943Sluigi * copy all other actions 356598943Sluigi */ 356698943Sluigi for (src = (ipfw_insn *)actbuf; src != action; src += i) { 356798943Sluigi i = F_LEN(src); 3568117328Sluigi bcopy(src, dst, i * sizeof(uint32_t)); 356998943Sluigi dst += i; 357098943Sluigi } 357198943Sluigi 3572117328Sluigi rule->cmd_len = (uint32_t *)dst - (uint32_t *)(rule->cmd); 3573117469Sluigi i = (char *)dst - (char *)rule; 3574119740Stmm if (do_cmd(IP_FW_ADD, rule, (uintptr_t)&i) == -1) 357598943Sluigi err(EX_UNAVAILABLE, "getsockopt(%s)", "IP_FW_ADD"); 3576187764Sluigi if (!co.do_quiet) 3577117469Sluigi show_ipfw(rule, 0, 0); 357898943Sluigi} 357998943Sluigi 3580187767Sluigi/* 3581187767Sluigi * clear the counters or the log counters. 3582187767Sluigi */ 3583187767Sluigivoid 3584187767Sluigiipfw_zero(int ac, char *av[], int optname /* 0 = IP_FW_ZERO, 1 = IP_FW_RESETLOG */) 358598943Sluigi{ 3586170923Smaxim uint32_t arg, saved_arg; 358798943Sluigi int failed = EX_OK; 3588170923Smaxim char const *errstr; 3589187767Sluigi char const *name = optname ? "RESETLOG" : "ZERO"; 359098943Sluigi 3591187767Sluigi optname = optname ? IP_FW_RESETLOG : IP_FW_ZERO; 3592187767Sluigi 359398943Sluigi av++; ac--; 359498943Sluigi 359598943Sluigi if (!ac) { 359698943Sluigi /* clear all entries */ 3597117328Sluigi if (do_cmd(optname, NULL, 0) < 0) 3598117328Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_FW_%s)", name); 3599187764Sluigi if (!co.do_quiet) 3600117328Sluigi printf("%s.\n", optname == IP_FW_ZERO ? 3601117328Sluigi "Accounting cleared":"Logging counts reset"); 360298943Sluigi 360398943Sluigi return; 360498943Sluigi } 360598943Sluigi 360698943Sluigi while (ac) { 360798943Sluigi /* Rule number */ 360898943Sluigi if (isdigit(**av)) { 3609170923Smaxim arg = strtonum(*av, 0, 0xffff, &errstr); 3610170923Smaxim if (errstr) 3611170923Smaxim errx(EX_DATAERR, 3612170923Smaxim "invalid rule number %s\n", *av); 3613170923Smaxim saved_arg = arg; 3614187764Sluigi if (co.use_set) 3615187764Sluigi arg |= (1 << 24) | ((co.use_set - 1) << 16); 361698943Sluigi av++; 361798943Sluigi ac--; 3618170923Smaxim if (do_cmd(optname, &arg, sizeof(arg))) { 3619117328Sluigi warn("rule %u: setsockopt(IP_FW_%s)", 3620170923Smaxim saved_arg, name); 362198943Sluigi failed = EX_UNAVAILABLE; 3622187764Sluigi } else if (!co.do_quiet) 3623170923Smaxim printf("Entry %d %s.\n", saved_arg, 3624117328Sluigi optname == IP_FW_ZERO ? 3625117328Sluigi "cleared" : "logging count reset"); 362698943Sluigi } else { 362798943Sluigi errx(EX_USAGE, "invalid rule number ``%s''", *av); 362898943Sluigi } 362998943Sluigi } 363098943Sluigi if (failed != EX_OK) 363198943Sluigi exit(failed); 363298943Sluigi} 363398943Sluigi 3634187767Sluigivoid 3635187767Sluigiipfw_flush(int force) 363698943Sluigi{ 3637187764Sluigi int cmd = co.do_pipe ? IP_DUMMYNET_FLUSH : IP_FW_FLUSH; 363898943Sluigi 3639187764Sluigi if (!force && !co.do_quiet) { /* need to ask user */ 364098943Sluigi int c; 364198943Sluigi 364298943Sluigi printf("Are you sure? [yn] "); 364398943Sluigi fflush(stdout); 364498943Sluigi do { 364598943Sluigi c = toupper(getc(stdin)); 364698943Sluigi while (c != '\n' && getc(stdin) != '\n') 364798943Sluigi if (feof(stdin)) 364898943Sluigi return; /* and do not flush */ 364998943Sluigi } while (c != 'Y' && c != 'N'); 365098943Sluigi printf("\n"); 365198943Sluigi if (c == 'N') /* user said no */ 365298943Sluigi return; 365398943Sluigi } 3654170923Smaxim /* `ipfw set N flush` - is the same that `ipfw delete set N` */ 3655187764Sluigi if (co.use_set) { 3656187764Sluigi uint32_t arg = ((co.use_set - 1) & 0xffff) | (1 << 24); 3657170923Smaxim if (do_cmd(IP_FW_DEL, &arg, sizeof(arg)) < 0) 3658170923Smaxim err(EX_UNAVAILABLE, "setsockopt(IP_FW_DEL)"); 3659170923Smaxim } else if (do_cmd(cmd, NULL, 0) < 0) 366098943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_%s_FLUSH)", 3661187764Sluigi co.do_pipe ? "DUMMYNET" : "FW"); 3662187764Sluigi if (!co.do_quiet) 3663187764Sluigi printf("Flushed all %s.\n", co.do_pipe ? "pipes" : "rules"); 366498943Sluigi} 366598943Sluigi 3666117544Sluigi 3667183407Srikstatic void table_list(ipfw_table_entry ent, int need_header); 3668183228Srik 3669117544Sluigi/* 3670130281Sru * This one handles all table-related commands 3671130281Sru * ipfw table N add addr[/masklen] [value] 3672130281Sru * ipfw table N delete addr[/masklen] 3673183407Srik * ipfw table {N | all} flush 3674183407Srik * ipfw table {N | all} list 3675130281Sru */ 3676187767Sluigivoid 3677187767Sluigiipfw_table_handler(int ac, char *av[]) 3678130281Sru{ 3679130281Sru ipfw_table_entry ent; 3680130281Sru int do_add; 3681183407Srik int is_all; 3682183241Srik size_t len; 3683130281Sru char *p; 3684183407Srik uint32_t a; 3685183241Srik uint32_t tables_max; 3686130281Sru 3687183263Skeramida len = sizeof(tables_max); 3688183241Srik if (sysctlbyname("net.inet.ip.fw.tables_max", &tables_max, &len, 3689183241Srik NULL, 0) == -1) { 3690183241Srik#ifdef IPFW_TABLES_MAX 3691183241Srik warn("Warn: Failed to get the max tables number via sysctl. " 3692183241Srik "Using the compiled in defaults. \nThe reason was"); 3693183241Srik tables_max = IPFW_TABLES_MAX; 3694183241Srik#else 3695183241Srik errx(1, "Failed sysctlbyname(\"net.inet.ip.fw.tables_max\")"); 3696183241Srik#endif 3697183241Srik } 3698183241Srik 3699130281Sru ac--; av++; 3700130281Sru if (ac && isdigit(**av)) { 3701130281Sru ent.tbl = atoi(*av); 3702183407Srik is_all = 0; 3703130281Sru ac--; av++; 3704183407Srik } else if (ac && _substrcmp(*av, "all") == 0) { 3705183407Srik ent.tbl = 0; 3706183407Srik is_all = 1; 3707183407Srik ac--; av++; 3708130281Sru } else 3709183407Srik errx(EX_USAGE, "table number or 'all' keyword required"); 3710183241Srik if (ent.tbl >= tables_max) 3711183241Srik errx(EX_USAGE, "The table number exceeds the maximum allowed " 3712183241Srik "value (%d)", tables_max - 1); 3713130281Sru NEED1("table needs command"); 3714183407Srik if (is_all && _substrcmp(*av, "list") != 0 3715183407Srik && _substrcmp(*av, "flush") != 0) 3716183407Srik errx(EX_USAGE, "table number required"); 3717183407Srik 3718140271Sbrooks if (_substrcmp(*av, "add") == 0 || 3719140271Sbrooks _substrcmp(*av, "delete") == 0) { 3720130281Sru do_add = **av == 'a'; 3721130281Sru ac--; av++; 3722130281Sru if (!ac) 3723130281Sru errx(EX_USAGE, "IP address required"); 3724130281Sru p = strchr(*av, '/'); 3725130281Sru if (p) { 3726130281Sru *p++ = '\0'; 3727130281Sru ent.masklen = atoi(p); 3728130281Sru if (ent.masklen > 32) 3729130281Sru errx(EX_DATAERR, "bad width ``%s''", p); 3730130281Sru } else 3731130281Sru ent.masklen = 32; 3732130281Sru if (lookup_host(*av, (struct in_addr *)&ent.addr) != 0) 3733130298Sru errx(EX_NOHOST, "hostname ``%s'' unknown", *av); 3734130281Sru ac--; av++; 3735161424Sjulian if (do_add && ac) { 3736161424Sjulian unsigned int tval; 3737161424Sjulian /* isdigit is a bit of a hack here.. */ 3738161424Sjulian if (strchr(*av, (int)'.') == NULL && isdigit(**av)) { 3739161424Sjulian ent.value = strtoul(*av, NULL, 0); 3740161424Sjulian } else { 3741161424Sjulian if (lookup_host(*av, (struct in_addr *)&tval) == 0) { 3742161424Sjulian /* The value must be stored in host order * 3743161424Sjulian * so that the values < 65k can be distinguished */ 3744161424Sjulian ent.value = ntohl(tval); 3745161424Sjulian } else { 3746161424Sjulian errx(EX_NOHOST, "hostname ``%s'' unknown", *av); 3747161424Sjulian } 3748161424Sjulian } 3749161424Sjulian } else 3750130281Sru ent.value = 0; 3751130281Sru if (do_cmd(do_add ? IP_FW_TABLE_ADD : IP_FW_TABLE_DEL, 3752157335Sjulian &ent, sizeof(ent)) < 0) { 3753155639Sjulian /* If running silent, don't bomb out on these errors. */ 3754187764Sluigi if (!(co.do_quiet && (errno == (do_add ? EEXIST : ESRCH)))) 3755155639Sjulian err(EX_OSERR, "setsockopt(IP_FW_TABLE_%s)", 3756155639Sjulian do_add ? "ADD" : "DEL"); 3757155639Sjulian /* In silent mode, react to a failed add by deleting */ 3758157332Sjulian if (do_add) { 3759155639Sjulian do_cmd(IP_FW_TABLE_DEL, &ent, sizeof(ent)); 3760155639Sjulian if (do_cmd(IP_FW_TABLE_ADD, 3761155639Sjulian &ent, sizeof(ent)) < 0) 3762155639Sjulian err(EX_OSERR, 3763155639Sjulian "setsockopt(IP_FW_TABLE_ADD)"); 3764157332Sjulian } 3765157335Sjulian } 3766140271Sbrooks } else if (_substrcmp(*av, "flush") == 0) { 3767183407Srik a = is_all ? tables_max : (ent.tbl + 1); 3768183407Srik do { 3769183407Srik if (do_cmd(IP_FW_TABLE_FLUSH, &ent.tbl, 3770183407Srik sizeof(ent.tbl)) < 0) 3771183407Srik err(EX_OSERR, "setsockopt(IP_FW_TABLE_FLUSH)"); 3772183407Srik } while (++ent.tbl < a); 3773140271Sbrooks } else if (_substrcmp(*av, "list") == 0) { 3774183407Srik a = is_all ? tables_max : (ent.tbl + 1); 3775183407Srik do { 3776183415Srik table_list(ent, is_all); 3777183407Srik } while (++ent.tbl < a); 3778183228Srik } else 3779183228Srik errx(EX_USAGE, "invalid table command %s", *av); 3780183228Srik} 3781183205Srik 3782183228Srikstatic void 3783183407Sriktable_list(ipfw_table_entry ent, int need_header) 3784183228Srik{ 3785183228Srik ipfw_table *tbl; 3786183228Srik socklen_t l; 3787183228Srik uint32_t a; 3788183205Srik 3789183228Srik a = ent.tbl; 3790183228Srik l = sizeof(a); 3791183228Srik if (do_cmd(IP_FW_TABLE_GETSIZE, &a, (uintptr_t)&l) < 0) 3792183228Srik err(EX_OSERR, "getsockopt(IP_FW_TABLE_GETSIZE)"); 3793183228Srik 3794183228Srik /* If a is zero we have nothing to do, the table is empty. */ 3795183228Srik if (a == 0) 3796183228Srik return; 3797183228Srik 3798183228Srik l = sizeof(*tbl) + a * sizeof(ipfw_table_entry); 3799187716Sluigi tbl = safe_calloc(1, l); 3800183228Srik tbl->tbl = ent.tbl; 3801183228Srik if (do_cmd(IP_FW_TABLE_LIST, tbl, (uintptr_t)&l) < 0) 3802183228Srik err(EX_OSERR, "getsockopt(IP_FW_TABLE_LIST)"); 3803183407Srik if (tbl->cnt && need_header) 3804183407Srik printf("---table(%d)---\n", tbl->tbl); 3805183228Srik for (a = 0; a < tbl->cnt; a++) { 3806183228Srik unsigned int tval; 3807183228Srik tval = tbl->ent[a].value; 3808187764Sluigi if (co.do_value_as_ip) { 3809183228Srik char tbuf[128]; 3810183228Srik strncpy(tbuf, inet_ntoa(*(struct in_addr *) 3811161456Sjulian &tbl->ent[a].addr), 127); 3812183228Srik /* inet_ntoa expects network order */ 3813183228Srik tval = htonl(tval); 3814183228Srik printf("%s/%u %s\n", tbuf, tbl->ent[a].masklen, 3815183228Srik inet_ntoa(*(struct in_addr *)&tval)); 3816183228Srik } else { 3817183228Srik printf("%s/%u %u\n", 3818183228Srik inet_ntoa(*(struct in_addr *)&tbl->ent[a].addr), 3819183228Srik tbl->ent[a].masklen, tval); 3820130281Sru } 3821183228Srik } 3822183228Srik free(tbl); 3823130281Sru} 3824