ipfw2.c revision 206266
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 206266 2010-04-06 12:28:08Z ume $ 2198943Sluigi */ 2298943Sluigi 23187604Sluigi#include <sys/types.h> 2498943Sluigi#include <sys/socket.h> 2598943Sluigi#include <sys/sockio.h> 2698943Sluigi#include <sys/sysctl.h> 2798943Sluigi 28187767Sluigi#include "ipfw2.h" 29187767Sluigi 3098943Sluigi#include <ctype.h> 3198943Sluigi#include <err.h> 3298943Sluigi#include <errno.h> 3398943Sluigi#include <grp.h> 3498943Sluigi#include <netdb.h> 3598943Sluigi#include <pwd.h> 3698943Sluigi#include <stdio.h> 3798943Sluigi#include <stdlib.h> 3898943Sluigi#include <string.h> 3998943Sluigi#include <sysexits.h> 40187983Sluigi#include <time.h> /* ctime */ 41187604Sluigi#include <timeconv.h> /* _long_to_time */ 42136071Sgreen#include <unistd.h> 43136071Sgreen#include <fcntl.h> 4498943Sluigi 45169424Smaxim#include <net/ethernet.h> 46187983Sluigi#include <net/if.h> /* only IFNAMSIZ */ 4798943Sluigi#include <netinet/in.h> 48187983Sluigi#include <netinet/in_systm.h> /* only n_short, n_long */ 4998943Sluigi#include <netinet/ip.h> 5098943Sluigi#include <netinet/ip_icmp.h> 5198943Sluigi#include <netinet/ip_fw.h> 5298943Sluigi#include <netinet/tcp.h> 5398943Sluigi#include <arpa/inet.h> 5498943Sluigi 55187767Sluigistruct cmdline_opts co; /* global options */ 5698943Sluigi 57187767Sluigiint resvd_set_number = RESVD_SET; 58187764Sluigi 59159636Soleg#define GET_UINT_ARG(arg, min, max, tok, s_x) do { \ 60204591Sluigi if (!av[0]) \ 61159636Soleg errx(EX_USAGE, "%s: missing argument", match_value(s_x, tok)); \ 62159636Soleg if (_substrcmp(*av, "tablearg") == 0) { \ 63159636Soleg arg = IP_FW_TABLEARG; \ 64159636Soleg break; \ 65159636Soleg } \ 66159636Soleg \ 67159636Soleg { \ 68204591Sluigi long _xval; \ 69159636Soleg char *end; \ 70159636Soleg \ 71204591Sluigi _xval = strtol(*av, &end, 10); \ 72159636Soleg \ 73204591Sluigi if (!isdigit(**av) || *end != '\0' || (_xval == 0 && errno == EINVAL)) \ 74159636Soleg errx(EX_DATAERR, "%s: invalid argument: %s", \ 75159636Soleg match_value(s_x, tok), *av); \ 76159636Soleg \ 77204591Sluigi if (errno == ERANGE || _xval < min || _xval > max) \ 78159636Soleg errx(EX_DATAERR, "%s: argument is out of range (%u..%u): %s", \ 79159636Soleg match_value(s_x, tok), min, max, *av); \ 80159636Soleg \ 81204591Sluigi if (_xval == IP_FW_TABLEARG) \ 82159636Soleg errx(EX_DATAERR, "%s: illegal argument value: %s", \ 83159636Soleg match_value(s_x, tok), *av); \ 84204591Sluigi arg = _xval; \ 85159636Soleg } \ 86158879Soleg} while (0) 87158879Soleg 88187762Sluigistatic void 89187762SluigiPRINT_UINT_ARG(const char *str, uint32_t arg) 90187762Sluigi{ 91187762Sluigi if (str != NULL) 92187762Sluigi printf("%s",str); 93187762Sluigi if (arg == IP_FW_TABLEARG) 94187762Sluigi printf("tablearg"); 95187762Sluigi else 96187762Sluigi printf("%u", arg); 97187762Sluigi} 98159636Soleg 9998943Sluigistatic struct _s_x f_tcpflags[] = { 10098943Sluigi { "syn", TH_SYN }, 10198943Sluigi { "fin", TH_FIN }, 10298943Sluigi { "ack", TH_ACK }, 10398943Sluigi { "psh", TH_PUSH }, 10498943Sluigi { "rst", TH_RST }, 10598943Sluigi { "urg", TH_URG }, 10698943Sluigi { "tcp flag", 0 }, 10798943Sluigi { NULL, 0 } 10898943Sluigi}; 10998943Sluigi 11098943Sluigistatic struct _s_x f_tcpopts[] = { 11198943Sluigi { "mss", IP_FW_TCPOPT_MSS }, 11298943Sluigi { "maxseg", IP_FW_TCPOPT_MSS }, 11398943Sluigi { "window", IP_FW_TCPOPT_WINDOW }, 11498943Sluigi { "sack", IP_FW_TCPOPT_SACK }, 11598943Sluigi { "ts", IP_FW_TCPOPT_TS }, 11698943Sluigi { "timestamp", IP_FW_TCPOPT_TS }, 11798943Sluigi { "cc", IP_FW_TCPOPT_CC }, 11898943Sluigi { "tcp option", 0 }, 11998943Sluigi { NULL, 0 } 12098943Sluigi}; 12198943Sluigi 12298943Sluigi/* 12398943Sluigi * IP options span the range 0 to 255 so we need to remap them 12498943Sluigi * (though in fact only the low 5 bits are significant). 12598943Sluigi */ 12698943Sluigistatic struct _s_x f_ipopts[] = { 12798943Sluigi { "ssrr", IP_FW_IPOPT_SSRR}, 12898943Sluigi { "lsrr", IP_FW_IPOPT_LSRR}, 12998943Sluigi { "rr", IP_FW_IPOPT_RR}, 13098943Sluigi { "ts", IP_FW_IPOPT_TS}, 13198943Sluigi { "ip option", 0 }, 13298943Sluigi { NULL, 0 } 13398943Sluigi}; 13498943Sluigi 13598943Sluigistatic struct _s_x f_iptos[] = { 13698943Sluigi { "lowdelay", IPTOS_LOWDELAY}, 13798943Sluigi { "throughput", IPTOS_THROUGHPUT}, 13898943Sluigi { "reliability", IPTOS_RELIABILITY}, 13998943Sluigi { "mincost", IPTOS_MINCOST}, 140172801Srpaulo { "congestion", IPTOS_ECN_CE}, 141172801Srpaulo { "ecntransport", IPTOS_ECN_ECT0}, 14298943Sluigi { "ip tos option", 0}, 14398943Sluigi { NULL, 0 } 14498943Sluigi}; 14598943Sluigi 14698943Sluigistatic struct _s_x limit_masks[] = { 14798943Sluigi {"all", DYN_SRC_ADDR|DYN_SRC_PORT|DYN_DST_ADDR|DYN_DST_PORT}, 14898943Sluigi {"src-addr", DYN_SRC_ADDR}, 14998943Sluigi {"src-port", DYN_SRC_PORT}, 15098943Sluigi {"dst-addr", DYN_DST_ADDR}, 15198943Sluigi {"dst-port", DYN_DST_PORT}, 15298943Sluigi {NULL, 0} 15398943Sluigi}; 15498943Sluigi 15598943Sluigi/* 15698943Sluigi * we use IPPROTO_ETHERTYPE as a fake protocol id to call the print routines 15798943Sluigi * This is only used in this code. 15898943Sluigi */ 15998943Sluigi#define IPPROTO_ETHERTYPE 0x1000 16098943Sluigistatic struct _s_x ether_types[] = { 16198943Sluigi /* 16298943Sluigi * Note, we cannot use "-:&/" in the names because they are field 16398943Sluigi * separators in the type specifications. Also, we use s = NULL as 16498943Sluigi * end-delimiter, because a type of 0 can be legal. 16598943Sluigi */ 16698943Sluigi { "ip", 0x0800 }, 16798943Sluigi { "ipv4", 0x0800 }, 16898943Sluigi { "ipv6", 0x86dd }, 16998943Sluigi { "arp", 0x0806 }, 17098943Sluigi { "rarp", 0x8035 }, 17198943Sluigi { "vlan", 0x8100 }, 17298943Sluigi { "loop", 0x9000 }, 17398943Sluigi { "trail", 0x1000 }, 17498943Sluigi { "at", 0x809b }, 17598943Sluigi { "atalk", 0x809b }, 17698943Sluigi { "aarp", 0x80f3 }, 17798943Sluigi { "pppoe_disc", 0x8863 }, 17898943Sluigi { "pppoe_sess", 0x8864 }, 17998943Sluigi { "ipx_8022", 0x00E0 }, 18098943Sluigi { "ipx_8023", 0x0000 }, 18198943Sluigi { "ipx_ii", 0x8137 }, 18298943Sluigi { "ipx_snap", 0x8137 }, 18398943Sluigi { "ipx", 0x8137 }, 18498943Sluigi { "ns", 0x0600 }, 18598943Sluigi { NULL, 0 } 18698943Sluigi}; 18798943Sluigi 18898943Sluigi 189187769Sluigistatic struct _s_x rule_actions[] = { 19098943Sluigi { "accept", TOK_ACCEPT }, 19198943Sluigi { "pass", TOK_ACCEPT }, 19298943Sluigi { "allow", TOK_ACCEPT }, 19398943Sluigi { "permit", TOK_ACCEPT }, 19498943Sluigi { "count", TOK_COUNT }, 19598943Sluigi { "pipe", TOK_PIPE }, 19698943Sluigi { "queue", TOK_QUEUE }, 19798943Sluigi { "divert", TOK_DIVERT }, 19898943Sluigi { "tee", TOK_TEE }, 199141351Sglebius { "netgraph", TOK_NETGRAPH }, 200141351Sglebius { "ngtee", TOK_NGTEE }, 20198943Sluigi { "fwd", TOK_FORWARD }, 20298943Sluigi { "forward", TOK_FORWARD }, 20398943Sluigi { "skipto", TOK_SKIPTO }, 20498943Sluigi { "deny", TOK_DENY }, 20598943Sluigi { "drop", TOK_DENY }, 20698943Sluigi { "reject", TOK_REJECT }, 207149020Sbz { "reset6", TOK_RESET6 }, 20898943Sluigi { "reset", TOK_RESET }, 209149020Sbz { "unreach6", TOK_UNREACH6 }, 21099475Sluigi { "unreach", TOK_UNREACH }, 21198943Sluigi { "check-state", TOK_CHECKSTATE }, 212117469Sluigi { "//", TOK_COMMENT }, 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 227200567Sluigi/* 228200567Sluigi * The 'lookup' instruction accepts one of the following arguments. 229200567Sluigi * -1 is a terminator for the list. 230200567Sluigi * Arguments are passed as v[1] in O_DST_LOOKUP options. 231200567Sluigi */ 232200567Sluigistatic int lookup_key[] = { 233200567Sluigi TOK_DSTIP, TOK_SRCIP, TOK_DSTPORT, TOK_SRCPORT, 234205169Sluigi TOK_UID, TOK_JAIL, TOK_DSCP, -1 }; 235200567Sluigi 236187769Sluigistatic struct _s_x rule_options[] = { 237158879Soleg { "tagged", TOK_TAGGED }, 23898943Sluigi { "uid", TOK_UID }, 23998943Sluigi { "gid", TOK_GID }, 240133600Scsjp { "jail", TOK_JAIL }, 24198943Sluigi { "in", TOK_IN }, 24298943Sluigi { "limit", TOK_LIMIT }, 24398943Sluigi { "keep-state", TOK_KEEPSTATE }, 24498943Sluigi { "bridged", TOK_LAYER2 }, 24598943Sluigi { "layer2", TOK_LAYER2 }, 24698943Sluigi { "out", TOK_OUT }, 247136073Sgreen { "diverted", TOK_DIVERTED }, 248136073Sgreen { "diverted-loopback", TOK_DIVERTEDLOOPBACK }, 249136073Sgreen { "diverted-output", TOK_DIVERTEDOUTPUT }, 25098943Sluigi { "xmit", TOK_XMIT }, 25198943Sluigi { "recv", TOK_RECV }, 25298943Sluigi { "via", TOK_VIA }, 25398943Sluigi { "fragment", TOK_FRAG }, 25498943Sluigi { "frag", TOK_FRAG }, 255178888Sjulian { "fib", TOK_FIB }, 25698943Sluigi { "ipoptions", TOK_IPOPTS }, 25798943Sluigi { "ipopts", TOK_IPOPTS }, 25898943Sluigi { "iplen", TOK_IPLEN }, 25998943Sluigi { "ipid", TOK_IPID }, 26098943Sluigi { "ipprecedence", TOK_IPPRECEDENCE }, 261205169Sluigi { "dscp", TOK_DSCP }, 26298943Sluigi { "iptos", TOK_IPTOS }, 26398943Sluigi { "ipttl", TOK_IPTTL }, 26498943Sluigi { "ipversion", TOK_IPVER }, 26598943Sluigi { "ipver", TOK_IPVER }, 26698943Sluigi { "estab", TOK_ESTAB }, 26798943Sluigi { "established", TOK_ESTAB }, 26898943Sluigi { "setup", TOK_SETUP }, 269136075Sgreen { "tcpdatalen", TOK_TCPDATALEN }, 27098943Sluigi { "tcpflags", TOK_TCPFLAGS }, 27198943Sluigi { "tcpflgs", TOK_TCPFLAGS }, 27298943Sluigi { "tcpoptions", TOK_TCPOPTS }, 27398943Sluigi { "tcpopts", TOK_TCPOPTS }, 27498943Sluigi { "tcpseq", TOK_TCPSEQ }, 27598943Sluigi { "tcpack", TOK_TCPACK }, 27698943Sluigi { "tcpwin", TOK_TCPWIN }, 27799909Sluigi { "icmptype", TOK_ICMPTYPES }, 27898943Sluigi { "icmptypes", TOK_ICMPTYPES }, 279102087Sluigi { "dst-ip", TOK_DSTIP }, 280102087Sluigi { "src-ip", TOK_SRCIP }, 281102087Sluigi { "dst-port", TOK_DSTPORT }, 282102087Sluigi { "src-port", TOK_SRCPORT }, 283102087Sluigi { "proto", TOK_PROTO }, 284102087Sluigi { "MAC", TOK_MAC }, 285102087Sluigi { "mac", TOK_MAC }, 286102087Sluigi { "mac-type", TOK_MACTYPE }, 287112250Scjc { "verrevpath", TOK_VERREVPATH }, 288128575Sandre { "versrcreach", TOK_VERSRCREACH }, 289133387Sandre { "antispoof", TOK_ANTISPOOF }, 290117241Sluigi { "ipsec", TOK_IPSEC }, 291145246Sbrooks { "icmp6type", TOK_ICMP6TYPES }, 292145246Sbrooks { "icmp6types", TOK_ICMP6TYPES }, 293145246Sbrooks { "ext6hdr", TOK_EXT6HDR}, 294145246Sbrooks { "flow-id", TOK_FLOWID}, 295145246Sbrooks { "ipv6", TOK_IPV6}, 296145246Sbrooks { "ip6", TOK_IPV6}, 297146894Smlaier { "ipv4", TOK_IPV4}, 298146894Smlaier { "ip4", TOK_IPV4}, 299145246Sbrooks { "dst-ipv6", TOK_DSTIP6}, 300145246Sbrooks { "dst-ip6", TOK_DSTIP6}, 301145246Sbrooks { "src-ipv6", TOK_SRCIP6}, 302145246Sbrooks { "src-ip6", TOK_SRCIP6}, 303200567Sluigi { "lookup", TOK_LOOKUP}, 304117469Sluigi { "//", TOK_COMMENT }, 30598943Sluigi 30698943Sluigi { "not", TOK_NOT }, /* pseudo option */ 30798943Sluigi { "!", /* escape ? */ TOK_NOT }, /* pseudo option */ 30898943Sluigi { "or", TOK_OR }, /* pseudo option */ 30998943Sluigi { "|", /* escape */ TOK_OR }, /* pseudo option */ 310101641Sluigi { "{", TOK_STARTBRACE }, /* pseudo option */ 311101641Sluigi { "(", TOK_STARTBRACE }, /* pseudo option */ 312101641Sluigi { "}", TOK_ENDBRACE }, /* pseudo option */ 313101641Sluigi { ")", TOK_ENDBRACE }, /* pseudo option */ 314117328Sluigi { NULL, 0 } /* terminator */ 31598943Sluigi}; 31698943Sluigi 317187787Sluigi/* 318187787Sluigi * The following is used to generate a printable argument for 319187787Sluigi * 64-bit numbers, irrespective of platform alignment and bit size. 320187787Sluigi * Because all the printf in this program use %llu as a format, 321187787Sluigi * we just return an unsigned long long, which is larger than 322187787Sluigi * we need in certain cases, but saves the hassle of using 323187787Sluigi * PRIu64 as a format specifier. 324187787Sluigi * We don't care about inlining, this is not performance critical code. 325187787Sluigi */ 326187787Sluigiunsigned long long 327187787Sluigialign_uint64(const uint64_t *pll) 328187787Sluigi{ 329117328Sluigi uint64_t ret; 330115793Sticso 331115793Sticso bcopy (pll, &ret, sizeof(ret)); 332115793Sticso return ret; 333129389Sstefanf} 334115793Sticso 335187767Sluigivoid * 336187716Sluigisafe_calloc(size_t number, size_t size) 337187716Sluigi{ 338187716Sluigi void *ret = calloc(number, size); 339187716Sluigi 340187716Sluigi if (ret == NULL) 341187716Sluigi err(EX_OSERR, "calloc"); 342187716Sluigi return ret; 343187716Sluigi} 344187716Sluigi 345187767Sluigivoid * 346187716Sluigisafe_realloc(void *ptr, size_t size) 347187716Sluigi{ 348187716Sluigi void *ret = realloc(ptr, size); 349187716Sluigi 350187716Sluigi if (ret == NULL) 351187716Sluigi err(EX_OSERR, "realloc"); 352187716Sluigi return ret; 353187716Sluigi} 354187716Sluigi 355117328Sluigi/* 356117328Sluigi * conditionally runs the command. 357204591Sluigi * Selected options or negative -> getsockopt 358117328Sluigi */ 359187769Sluigiint 360119740Stmmdo_cmd(int optname, void *optval, uintptr_t optlen) 361117328Sluigi{ 362117328Sluigi static int s = -1; /* the socket */ 363117328Sluigi int i; 364117577Sluigi 365187764Sluigi if (co.test_only) 366117328Sluigi return 0; 367117328Sluigi 368117328Sluigi if (s == -1) 369117328Sluigi s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); 370117328Sluigi if (s < 0) 371117328Sluigi err(EX_UNAVAILABLE, "socket"); 372117328Sluigi 373117328Sluigi if (optname == IP_FW_GET || optname == IP_DUMMYNET_GET || 374130281Sru optname == IP_FW_ADD || optname == IP_FW_TABLE_LIST || 375165648Spiso optname == IP_FW_TABLE_GETSIZE || 376165648Spiso optname == IP_FW_NAT_GET_CONFIG || 377204591Sluigi optname < 0 || 378204591Sluigi optname == IP_FW_NAT_GET_LOG) { 379204591Sluigi if (optname < 0) 380204591Sluigi optname = -optname; 381117328Sluigi i = getsockopt(s, IPPROTO_IP, optname, optval, 382117328Sluigi (socklen_t *)optlen); 383204591Sluigi } else { 384117328Sluigi i = setsockopt(s, IPPROTO_IP, optname, optval, optlen); 385204591Sluigi } 386117328Sluigi return i; 387117328Sluigi} 388117328Sluigi 38998943Sluigi/** 39098943Sluigi * match_token takes a table and a string, returns the value associated 391117328Sluigi * with the string (-1 in case of failure). 39298943Sluigi */ 393187769Sluigiint 39498943Sluigimatch_token(struct _s_x *table, char *string) 39598943Sluigi{ 39698943Sluigi struct _s_x *pt; 397117469Sluigi uint i = strlen(string); 39898943Sluigi 39998943Sluigi for (pt = table ; i && pt->s != NULL ; pt++) 40098943Sluigi if (strlen(pt->s) == i && !bcmp(string, pt->s, i)) 40198943Sluigi return pt->x; 40298943Sluigi return -1; 403129389Sstefanf} 40498943Sluigi 405117328Sluigi/** 406117328Sluigi * match_value takes a table and a value, returns the string associated 407117328Sluigi * with the value (NULL in case of failure). 408117328Sluigi */ 409187770Sluigichar const * 410117469Sluigimatch_value(struct _s_x *p, int value) 41198943Sluigi{ 41298943Sluigi for (; p->s != NULL; p++) 41398943Sluigi if (p->x == value) 41498943Sluigi return p->s; 41598943Sluigi return NULL; 41698943Sluigi} 41798943Sluigi 41898943Sluigi/* 419140271Sbrooks * _substrcmp takes two strings and returns 1 if they do not match, 420140271Sbrooks * and 0 if they match exactly or the first string is a sub-string 421140271Sbrooks * of the second. A warning is printed to stderr in the case that the 422140271Sbrooks * first string is a sub-string of the second. 423140271Sbrooks * 424140271Sbrooks * This function will be removed in the future through the usual 425140271Sbrooks * deprecation process. 426140271Sbrooks */ 427187767Sluigiint 428140271Sbrooks_substrcmp(const char *str1, const char* str2) 429140271Sbrooks{ 430140271Sbrooks 431140271Sbrooks if (strncmp(str1, str2, strlen(str1)) != 0) 432140271Sbrooks return 1; 433140271Sbrooks 434140271Sbrooks if (strlen(str1) != strlen(str2)) 435140271Sbrooks warnx("DEPRECATED: '%s' matched '%s' as a sub-string", 436140271Sbrooks str1, str2); 437140271Sbrooks return 0; 438140271Sbrooks} 439140271Sbrooks 440140271Sbrooks/* 441140271Sbrooks * _substrcmp2 takes three strings and returns 1 if the first two do not match, 442140271Sbrooks * and 0 if they match exactly or the second string is a sub-string 443140271Sbrooks * of the first. A warning is printed to stderr in the case that the 444140271Sbrooks * first string does not match the third. 445140271Sbrooks * 446140271Sbrooks * This function exists to warn about the bizzare construction 447140271Sbrooks * strncmp(str, "by", 2) which is used to allow people to use a shotcut 448140271Sbrooks * for "bytes". The problem is that in addition to accepting "by", 449140271Sbrooks * "byt", "byte", and "bytes", it also excepts "by_rabid_dogs" and any 450140271Sbrooks * other string beginning with "by". 451140271Sbrooks * 452140271Sbrooks * This function will be removed in the future through the usual 453140271Sbrooks * deprecation process. 454140271Sbrooks */ 455187769Sluigiint 456140271Sbrooks_substrcmp2(const char *str1, const char* str2, const char* str3) 457140271Sbrooks{ 458140271Sbrooks 459140271Sbrooks if (strncmp(str1, str2, strlen(str2)) != 0) 460140271Sbrooks return 1; 461140271Sbrooks 462140271Sbrooks if (strcmp(str1, str3) != 0) 463140271Sbrooks warnx("DEPRECATED: '%s' matched '%s'", 464140271Sbrooks str1, str3); 465140271Sbrooks return 0; 466140271Sbrooks} 467140271Sbrooks 468140271Sbrooks/* 46998943Sluigi * prints one port, symbolic or numeric 47098943Sluigi */ 47198943Sluigistatic void 472117328Sluigiprint_port(int proto, uint16_t port) 47398943Sluigi{ 47498943Sluigi 47598943Sluigi if (proto == IPPROTO_ETHERTYPE) { 476117469Sluigi char const *s; 47798943Sluigi 478187764Sluigi if (co.do_resolv && (s = match_value(ether_types, port)) ) 47998943Sluigi printf("%s", s); 48098943Sluigi else 48198943Sluigi printf("0x%04x", port); 48298943Sluigi } else { 48398943Sluigi struct servent *se = NULL; 484187764Sluigi if (co.do_resolv) { 48598943Sluigi struct protoent *pe = getprotobynumber(proto); 48698943Sluigi 48798943Sluigi se = getservbyport(htons(port), pe ? pe->p_name : NULL); 48898943Sluigi } 48998943Sluigi if (se) 49098943Sluigi printf("%s", se->s_name); 49198943Sluigi else 49298943Sluigi printf("%d", port); 49398943Sluigi } 49498943Sluigi} 49598943Sluigi 496187769Sluigistatic struct _s_x _port_name[] = { 497117328Sluigi {"dst-port", O_IP_DSTPORT}, 498117328Sluigi {"src-port", O_IP_SRCPORT}, 499117328Sluigi {"ipid", O_IPID}, 500117328Sluigi {"iplen", O_IPLEN}, 501117328Sluigi {"ipttl", O_IPTTL}, 502117328Sluigi {"mac-type", O_MAC_TYPE}, 503136075Sgreen {"tcpdatalen", O_TCPDATALEN}, 504158879Soleg {"tagged", O_TAGGED}, 505117328Sluigi {NULL, 0} 506117328Sluigi}; 507117328Sluigi 50898943Sluigi/* 509117328Sluigi * Print the values in a list 16-bit items of the types above. 51098943Sluigi * XXX todo: add support for mask. 51198943Sluigi */ 51298943Sluigistatic void 513102087Sluigiprint_newports(ipfw_insn_u16 *cmd, int proto, int opcode) 51498943Sluigi{ 515117328Sluigi uint16_t *p = cmd->ports; 51698943Sluigi int i; 517117469Sluigi char const *sep; 51898943Sluigi 519116690Sluigi if (opcode != 0) { 520117328Sluigi sep = match_value(_port_name, opcode); 521117328Sluigi if (sep == NULL) 522116690Sluigi sep = "???"; 523116690Sluigi printf (" %s", sep); 524116690Sluigi } 525116690Sluigi sep = " "; 52698943Sluigi for (i = F_LEN((ipfw_insn *)cmd) - 1; i > 0; i--, p += 2) { 527193702Sluigi printf("%s", sep); 52898943Sluigi print_port(proto, p[0]); 52998943Sluigi if (p[0] != p[1]) { 53098943Sluigi printf("-"); 53198943Sluigi print_port(proto, p[1]); 53298943Sluigi } 53398943Sluigi sep = ","; 53498943Sluigi } 53598943Sluigi} 53698943Sluigi 53798943Sluigi/* 53898943Sluigi * Like strtol, but also translates service names into port numbers 53998943Sluigi * for some protocols. 54098943Sluigi * In particular: 54198943Sluigi * proto == -1 disables the protocol check; 54298943Sluigi * proto == IPPROTO_ETHERTYPE looks up an internal table 54398943Sluigi * proto == <some value in /etc/protocols> matches the values there. 544101628Sluigi * Returns *end == s in case the parameter is not found. 54598943Sluigi */ 54698943Sluigistatic int 54798943Sluigistrtoport(char *s, char **end, int base, int proto) 54898943Sluigi{ 549101628Sluigi char *p, *buf; 550101628Sluigi char *s1; 55198943Sluigi int i; 55298943Sluigi 553101628Sluigi *end = s; /* default - not found */ 554117577Sluigi if (*s == '\0') 555101628Sluigi return 0; /* not found */ 556106505Smaxim 55798943Sluigi if (isdigit(*s)) 55898943Sluigi return strtol(s, end, base); 55998943Sluigi 56098943Sluigi /* 561101628Sluigi * find separator. '\\' escapes the next char. 56298943Sluigi */ 563101628Sluigi for (s1 = s; *s1 && (isalnum(*s1) || *s1 == '\\') ; s1++) 564101628Sluigi if (*s1 == '\\' && s1[1] != '\0') 565101628Sluigi s1++; 56698943Sluigi 567187716Sluigi buf = safe_calloc(s1 - s + 1, 1); 568101628Sluigi 569101628Sluigi /* 570101628Sluigi * copy into a buffer skipping backslashes 571101628Sluigi */ 572101628Sluigi for (p = s, i = 0; p != s1 ; p++) 573117577Sluigi if (*p != '\\') 574101628Sluigi buf[i++] = *p; 575101628Sluigi buf[i++] = '\0'; 576101628Sluigi 57798943Sluigi if (proto == IPPROTO_ETHERTYPE) { 578101628Sluigi i = match_token(ether_types, buf); 579101628Sluigi free(buf); 580101628Sluigi if (i != -1) { /* found */ 58198943Sluigi *end = s1; 58298943Sluigi return i; 58398943Sluigi } 58498943Sluigi } else { 58598943Sluigi struct protoent *pe = NULL; 58698943Sluigi struct servent *se; 58798943Sluigi 58898943Sluigi if (proto != 0) 58998943Sluigi pe = getprotobynumber(proto); 59098943Sluigi setservent(1); 591101628Sluigi se = getservbyname(buf, pe ? pe->p_name : NULL); 592101628Sluigi free(buf); 59398943Sluigi if (se != NULL) { 59498943Sluigi *end = s1; 59598943Sluigi return ntohs(se->s_port); 59698943Sluigi } 59798943Sluigi } 598101628Sluigi return 0; /* not found */ 59998943Sluigi} 60098943Sluigi 60198943Sluigi/* 602117328Sluigi * Fill the body of the command with the list of port ranges. 60398943Sluigi */ 60498943Sluigistatic int 60598943Sluigifill_newports(ipfw_insn_u16 *cmd, char *av, int proto) 60698943Sluigi{ 607117328Sluigi uint16_t a, b, *p = cmd->ports; 60898943Sluigi int i = 0; 609102087Sluigi char *s = av; 61098943Sluigi 611102087Sluigi while (*s) { 61298943Sluigi a = strtoport(av, &s, 0, proto); 613159636Soleg if (s == av) /* empty or invalid argument */ 614159636Soleg return (0); 615159636Soleg 616159636Soleg switch (*s) { 617159636Soleg case '-': /* a range */ 618159636Soleg av = s + 1; 61998943Sluigi b = strtoport(av, &s, 0, proto); 620159636Soleg /* Reject expressions like '1-abc' or '1-2-3'. */ 621159636Soleg if (s == av || (*s != ',' && *s != '\0')) 622159636Soleg return (0); 62398943Sluigi p[0] = a; 62498943Sluigi p[1] = b; 625159636Soleg break; 626159636Soleg case ',': /* comma separated list */ 627159636Soleg case '\0': 62898943Sluigi p[0] = p[1] = a; 629159636Soleg break; 630159636Soleg default: 631159636Soleg warnx("port list: invalid separator <%c> in <%s>", 632101978Sluigi *s, av); 633159636Soleg return (0); 634159636Soleg } 635159636Soleg 636102087Sluigi i++; 637102087Sluigi p += 2; 638159636Soleg av = s + 1; 63998943Sluigi } 64098943Sluigi if (i > 0) { 641159636Soleg if (i + 1 > F_LEN_MASK) 642102087Sluigi errx(EX_DATAERR, "too many ports/ranges\n"); 643159636Soleg cmd->o.len |= i + 1; /* leave F_NOT and F_OR untouched */ 64498943Sluigi } 645159636Soleg return (i); 64698943Sluigi} 64798943Sluigi 64898943Sluigistatic struct _s_x icmpcodes[] = { 64998943Sluigi { "net", ICMP_UNREACH_NET }, 65098943Sluigi { "host", ICMP_UNREACH_HOST }, 65198943Sluigi { "protocol", ICMP_UNREACH_PROTOCOL }, 65298943Sluigi { "port", ICMP_UNREACH_PORT }, 65398943Sluigi { "needfrag", ICMP_UNREACH_NEEDFRAG }, 65498943Sluigi { "srcfail", ICMP_UNREACH_SRCFAIL }, 65598943Sluigi { "net-unknown", ICMP_UNREACH_NET_UNKNOWN }, 65698943Sluigi { "host-unknown", ICMP_UNREACH_HOST_UNKNOWN }, 65798943Sluigi { "isolated", ICMP_UNREACH_ISOLATED }, 65898943Sluigi { "net-prohib", ICMP_UNREACH_NET_PROHIB }, 65998943Sluigi { "host-prohib", ICMP_UNREACH_HOST_PROHIB }, 66098943Sluigi { "tosnet", ICMP_UNREACH_TOSNET }, 66198943Sluigi { "toshost", ICMP_UNREACH_TOSHOST }, 66298943Sluigi { "filter-prohib", ICMP_UNREACH_FILTER_PROHIB }, 66398943Sluigi { "host-precedence", ICMP_UNREACH_HOST_PRECEDENCE }, 66498943Sluigi { "precedence-cutoff", ICMP_UNREACH_PRECEDENCE_CUTOFF }, 66598943Sluigi { NULL, 0 } 66698943Sluigi}; 66798943Sluigi 66898943Sluigistatic void 66998943Sluigifill_reject_code(u_short *codep, char *str) 67098943Sluigi{ 67198943Sluigi int val; 67298943Sluigi char *s; 67398943Sluigi 67498943Sluigi val = strtoul(str, &s, 0); 67598943Sluigi if (s == str || *s != '\0' || val >= 0x100) 67698943Sluigi val = match_token(icmpcodes, str); 677102087Sluigi if (val < 0) 67898943Sluigi errx(EX_DATAERR, "unknown ICMP unreachable code ``%s''", str); 67998943Sluigi *codep = val; 68098943Sluigi return; 68198943Sluigi} 68298943Sluigi 68398943Sluigistatic void 684117328Sluigiprint_reject_code(uint16_t code) 68598943Sluigi{ 686117469Sluigi char const *s = match_value(icmpcodes, code); 68798943Sluigi 68898943Sluigi if (s != NULL) 68999475Sluigi printf("unreach %s", s); 69098943Sluigi else 69199475Sluigi printf("unreach %u", code); 69298943Sluigi} 69398943Sluigi 69498943Sluigi/* 69598943Sluigi * Returns the number of bits set (from left) in a contiguous bitmask, 69698943Sluigi * or -1 if the mask is not contiguous. 69798943Sluigi * XXX this needs a proper fix. 69898943Sluigi * This effectively works on masks in big-endian (network) format. 69998943Sluigi * when compiled on little endian architectures. 70098943Sluigi * 70198943Sluigi * First bit is bit 7 of the first byte -- note, for MAC addresses, 70298943Sluigi * the first bit on the wire is bit 0 of the first byte. 70398943Sluigi * len is the max length in bits. 70498943Sluigi */ 705187770Sluigiint 706117577Sluigicontigmask(uint8_t *p, int len) 70798943Sluigi{ 70898943Sluigi int i, n; 709117577Sluigi 71098943Sluigi for (i=0; i<len ; i++) 71198943Sluigi if ( (p[i/8] & (1 << (7 - (i%8)))) == 0) /* first bit unset */ 71298943Sluigi break; 71398943Sluigi for (n=i+1; n < len; n++) 71498943Sluigi if ( (p[n/8] & (1 << (7 - (n%8)))) != 0) 71598943Sluigi return -1; /* mask not contiguous */ 71698943Sluigi return i; 71798943Sluigi} 71898943Sluigi 71998943Sluigi/* 72098943Sluigi * print flags set/clear in the two bitmasks passed as parameters. 72198943Sluigi * There is a specialized check for f_tcpflags. 72298943Sluigi */ 72398943Sluigistatic void 724117469Sluigiprint_flags(char const *name, ipfw_insn *cmd, struct _s_x *list) 72598943Sluigi{ 726117469Sluigi char const *comma = ""; 72798943Sluigi int i; 728117577Sluigi uint8_t set = cmd->arg1 & 0xff; 729117577Sluigi uint8_t clear = (cmd->arg1 >> 8) & 0xff; 73098943Sluigi 73198943Sluigi if (list == f_tcpflags && set == TH_SYN && clear == TH_ACK) { 73298943Sluigi printf(" setup"); 73398943Sluigi return; 73498943Sluigi } 73598943Sluigi 73698943Sluigi printf(" %s ", name); 73798943Sluigi for (i=0; list[i].x != 0; i++) { 73898943Sluigi if (set & list[i].x) { 73998943Sluigi set &= ~list[i].x; 74098943Sluigi printf("%s%s", comma, list[i].s); 74198943Sluigi comma = ","; 74298943Sluigi } 74398943Sluigi if (clear & list[i].x) { 74498943Sluigi clear &= ~list[i].x; 74598943Sluigi printf("%s!%s", comma, list[i].s); 74698943Sluigi comma = ","; 74798943Sluigi } 74898943Sluigi } 74998943Sluigi} 75098943Sluigi 75198943Sluigi/* 75298943Sluigi * Print the ip address contained in a command. 75398943Sluigi */ 75498943Sluigistatic void 755117469Sluigiprint_ip(ipfw_insn_ip *cmd, char const *s) 75698943Sluigi{ 75798943Sluigi struct hostent *he = NULL; 758204591Sluigi uint32_t len = F_LEN((ipfw_insn *)cmd); 759117328Sluigi uint32_t *a = ((ipfw_insn_u32 *)cmd)->d; 76098943Sluigi 761200567Sluigi if (cmd->o.opcode == O_IP_DST_LOOKUP && len > F_INSN_SIZE(ipfw_insn_u32)) { 762200567Sluigi uint32_t d = a[1]; 763200567Sluigi const char *arg = "<invalid>"; 764200567Sluigi 765200567Sluigi if (d < sizeof(lookup_key)/sizeof(lookup_key[0])) 766200567Sluigi arg = match_value(rule_options, lookup_key[d]); 767200567Sluigi printf("%s lookup %s %d", cmd->o.len & F_NOT ? " not": "", 768200567Sluigi arg, cmd->o.arg1); 769200567Sluigi return; 770200567Sluigi } 771102087Sluigi printf("%s%s ", cmd->o.len & F_NOT ? " not": "", s); 77298943Sluigi 77398943Sluigi if (cmd->o.opcode == O_IP_SRC_ME || cmd->o.opcode == O_IP_DST_ME) { 77498943Sluigi printf("me"); 77598943Sluigi return; 77698943Sluigi } 777130281Sru if (cmd->o.opcode == O_IP_SRC_LOOKUP || 778130281Sru cmd->o.opcode == O_IP_DST_LOOKUP) { 779130281Sru printf("table(%u", ((ipfw_insn *)cmd)->arg1); 780130281Sru if (len == F_INSN_SIZE(ipfw_insn_u32)) 781130281Sru printf(",%u", *a); 782130281Sru printf(")"); 783130281Sru return; 784130281Sru } 78598943Sluigi if (cmd->o.opcode == O_IP_SRC_SET || cmd->o.opcode == O_IP_DST_SET) { 786117328Sluigi uint32_t x, *map = (uint32_t *)&(cmd->mask); 787116716Sluigi int i, j; 78898943Sluigi char comma = '{'; 78998943Sluigi 79098943Sluigi x = cmd->o.arg1 - 1; 79198943Sluigi x = htonl( ~x ); 79298943Sluigi cmd->addr.s_addr = htonl(cmd->addr.s_addr); 79398943Sluigi printf("%s/%d", inet_ntoa(cmd->addr), 794117577Sluigi contigmask((uint8_t *)&x, 32)); 79598943Sluigi x = cmd->addr.s_addr = htonl(cmd->addr.s_addr); 79698943Sluigi x &= 0xff; /* base */ 797116716Sluigi /* 798116716Sluigi * Print bits and ranges. 799116716Sluigi * Locate first bit set (i), then locate first bit unset (j). 800116716Sluigi * If we have 3+ consecutive bits set, then print them as a 801116716Sluigi * range, otherwise only print the initial bit and rescan. 802116716Sluigi */ 80398943Sluigi for (i=0; i < cmd->o.arg1; i++) 804117328Sluigi if (map[i/32] & (1<<(i & 31))) { 805116716Sluigi for (j=i+1; j < cmd->o.arg1; j++) 806117328Sluigi if (!(map[ j/32] & (1<<(j & 31)))) 807116716Sluigi break; 80898943Sluigi printf("%c%d", comma, i+x); 809116716Sluigi if (j>i+2) { /* range has at least 3 elements */ 810116716Sluigi printf("-%d", j-1+x); 811116716Sluigi i = j-1; 812116716Sluigi } 81398943Sluigi comma = ','; 81498943Sluigi } 81598943Sluigi printf("}"); 81698943Sluigi return; 81798943Sluigi } 818117328Sluigi /* 819117328Sluigi * len == 2 indicates a single IP, whereas lists of 1 or more 820117328Sluigi * addr/mask pairs have len = (2n+1). We convert len to n so we 821117328Sluigi * use that to count the number of entries. 822117328Sluigi */ 823117328Sluigi for (len = len / 2; len > 0; len--, a += 2) { 824117328Sluigi int mb = /* mask length */ 825117328Sluigi (cmd->o.opcode == O_IP_SRC || cmd->o.opcode == O_IP_DST) ? 826117577Sluigi 32 : contigmask((uint8_t *)&(a[1]), 32); 827187764Sluigi if (mb == 32 && co.do_resolv) 828117328Sluigi he = gethostbyaddr((char *)&(a[0]), sizeof(u_long), AF_INET); 82998943Sluigi if (he != NULL) /* resolved to name */ 83098943Sluigi printf("%s", he->h_name); 83198943Sluigi else if (mb == 0) /* any */ 83298943Sluigi printf("any"); 83398943Sluigi else { /* numeric IP followed by some kind of mask */ 834117328Sluigi printf("%s", inet_ntoa( *((struct in_addr *)&a[0]) ) ); 83598943Sluigi if (mb < 0) 836117328Sluigi printf(":%s", inet_ntoa( *((struct in_addr *)&a[1]) ) ); 83798943Sluigi else if (mb < 32) 83898943Sluigi printf("/%d", mb); 83998943Sluigi } 840117328Sluigi if (len > 1) 841117328Sluigi printf(","); 842117328Sluigi } 84398943Sluigi} 84498943Sluigi 84598943Sluigi/* 84698943Sluigi * prints a MAC address/mask pair 84798943Sluigi */ 84898943Sluigistatic void 849117577Sluigiprint_mac(uint8_t *addr, uint8_t *mask) 85098943Sluigi{ 85198943Sluigi int l = contigmask(mask, 48); 85298943Sluigi 85398943Sluigi if (l == 0) 85498943Sluigi printf(" any"); 85598943Sluigi else { 85698943Sluigi printf(" %02x:%02x:%02x:%02x:%02x:%02x", 85798943Sluigi addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 85898943Sluigi if (l == -1) 85998943Sluigi printf("&%02x:%02x:%02x:%02x:%02x:%02x", 86098943Sluigi mask[0], mask[1], mask[2], 86198943Sluigi mask[3], mask[4], mask[5]); 86298943Sluigi else if (l < 48) 86398943Sluigi printf("/%d", l); 86498943Sluigi } 86598943Sluigi} 86698943Sluigi 86799475Sluigistatic void 86899475Sluigifill_icmptypes(ipfw_insn_u32 *cmd, char *av) 86999475Sluigi{ 870117328Sluigi uint8_t type; 87198943Sluigi 87299475Sluigi cmd->d[0] = 0; 87399475Sluigi while (*av) { 87499475Sluigi if (*av == ',') 87599475Sluigi av++; 87699475Sluigi 87799475Sluigi type = strtoul(av, &av, 0); 87899475Sluigi 87999475Sluigi if (*av != ',' && *av != '\0') 88099475Sluigi errx(EX_DATAERR, "invalid ICMP type"); 88199475Sluigi 88299475Sluigi if (type > 31) 88399475Sluigi errx(EX_DATAERR, "ICMP type out of range"); 88499475Sluigi 88599475Sluigi cmd->d[0] |= 1 << type; 88699475Sluigi } 88799475Sluigi cmd->o.opcode = O_ICMPTYPE; 88899475Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 88999475Sluigi} 89099475Sluigi 89199475Sluigistatic void 89299475Sluigiprint_icmptypes(ipfw_insn_u32 *cmd) 89399475Sluigi{ 89499475Sluigi int i; 89599475Sluigi char sep= ' '; 89699475Sluigi 89799475Sluigi printf(" icmptypes"); 89899475Sluigi for (i = 0; i < 32; i++) { 89999475Sluigi if ( (cmd->d[0] & (1 << (i))) == 0) 90099475Sluigi continue; 90199475Sluigi printf("%c%d", sep, i); 90299475Sluigi sep = ','; 90399475Sluigi } 90499475Sluigi} 90599475Sluigi 90698943Sluigi/* 90798943Sluigi * show_ipfw() prints the body of an ipfw rule. 90898943Sluigi * Because the standard rule has at least proto src_ip dst_ip, we use 90998943Sluigi * a helper function to produce these entries if not provided explicitly. 910102087Sluigi * The first argument is the list of fields we have, the second is 911102087Sluigi * the list of fields we want to be printed. 912101978Sluigi * 913102087Sluigi * Special cases if we have provided a MAC header: 914102087Sluigi * + if the rule does not contain IP addresses/ports, do not print them; 915102087Sluigi * + if the rule does not contain an IP proto, print "all" instead of "ip"; 916102087Sluigi * 917102087Sluigi * Once we have 'have_options', IP header fields are printed as options. 91898943Sluigi */ 919101978Sluigi#define HAVE_PROTO 0x0001 920101978Sluigi#define HAVE_SRCIP 0x0002 921101978Sluigi#define HAVE_DSTIP 0x0004 922169139Smaxim#define HAVE_PROTO4 0x0008 923169139Smaxim#define HAVE_PROTO6 0x0010 924205179Sluigi#define HAVE_IP 0x0100 925102087Sluigi#define HAVE_OPTIONS 0x8000 92698943Sluigi 92798943Sluigistatic void 928187477Sluigishow_prerequisites(int *flags, int want, int cmd __unused) 92998943Sluigi{ 930187764Sluigi if (co.comment_only) 931123495Sluigi return; 932102087Sluigi if ( (*flags & HAVE_IP) == HAVE_IP) 933102087Sluigi *flags |= HAVE_OPTIONS; 934102087Sluigi 935102087Sluigi if ( !(*flags & HAVE_OPTIONS)) { 936187477Sluigi if ( !(*flags & HAVE_PROTO) && (want & HAVE_PROTO)) { 937146894Smlaier if ( (*flags & HAVE_PROTO4)) 938146894Smlaier printf(" ip4"); 939146894Smlaier else if ( (*flags & HAVE_PROTO6)) 940146894Smlaier printf(" ip6"); 941146894Smlaier else 942146894Smlaier printf(" ip"); 943187477Sluigi } 944102087Sluigi if ( !(*flags & HAVE_SRCIP) && (want & HAVE_SRCIP)) 945102087Sluigi printf(" from any"); 946102087Sluigi if ( !(*flags & HAVE_DSTIP) && (want & HAVE_DSTIP)) 947102087Sluigi printf(" to any"); 948102087Sluigi } 94998943Sluigi *flags |= want; 95098943Sluigi} 95198943Sluigi 95298943Sluigistatic void 953112189Smaximshow_ipfw(struct ip_fw *rule, int pcwidth, int bcwidth) 95498943Sluigi{ 955107291Skeramida static int twidth = 0; 95698943Sluigi int l; 957158879Soleg ipfw_insn *cmd, *tagptr = NULL; 958187477Sluigi const char *comment = NULL; /* ptr to comment if we have one */ 95998943Sluigi int proto = 0; /* default */ 96098943Sluigi int flags = 0; /* prerequisites */ 96198943Sluigi ipfw_insn_log *logptr = NULL; /* set if we find an O_LOG */ 962136071Sgreen ipfw_insn_altq *altqptr = NULL; /* set if we find an O_ALTQ */ 96398943Sluigi int or_block = 0; /* we are in an or block */ 964117328Sluigi uint32_t set_disable; 96598943Sluigi 966115793Sticso bcopy(&rule->next_rule, &set_disable, sizeof(set_disable)); 967101628Sluigi 968101628Sluigi if (set_disable & (1 << rule->set)) { /* disabled */ 969187764Sluigi if (!co.show_sets) 970101628Sluigi return; 971101628Sluigi else 972101628Sluigi printf("# DISABLED "); 973101628Sluigi } 97498943Sluigi printf("%05u ", rule->rulenum); 97598943Sluigi 976117469Sluigi if (pcwidth>0 || bcwidth>0) 977115793Sticso printf("%*llu %*llu ", pcwidth, align_uint64(&rule->pcnt), 978115793Sticso bcwidth, align_uint64(&rule->bcnt)); 97998943Sluigi 980187764Sluigi if (co.do_time == 2) 981117472Sluigi printf("%10u ", rule->timestamp); 982187764Sluigi else if (co.do_time == 1) { 983107291Skeramida char timestr[30]; 984107291Skeramida time_t t = (time_t)0; 985107291Skeramida 986107291Skeramida if (twidth == 0) { 987107291Skeramida strcpy(timestr, ctime(&t)); 988107291Skeramida *strchr(timestr, '\n') = '\0'; 989107291Skeramida twidth = strlen(timestr); 990107291Skeramida } 99198943Sluigi if (rule->timestamp) { 992107291Skeramida t = _long_to_time(rule->timestamp); 99398943Sluigi 99498943Sluigi strcpy(timestr, ctime(&t)); 99598943Sluigi *strchr(timestr, '\n') = '\0'; 99698943Sluigi printf("%s ", timestr); 99798943Sluigi } else { 998107291Skeramida printf("%*s", twidth, " "); 99998943Sluigi } 100098943Sluigi } 100198943Sluigi 1002187764Sluigi if (co.show_sets) 1003101628Sluigi printf("set %d ", rule->set); 1004101628Sluigi 100598943Sluigi /* 1006107289Sluigi * print the optional "match probability" 1007107289Sluigi */ 1008107289Sluigi if (rule->cmd_len > 0) { 1009107289Sluigi cmd = rule->cmd ; 1010107289Sluigi if (cmd->opcode == O_PROB) { 1011107289Sluigi ipfw_insn_u32 *p = (ipfw_insn_u32 *)cmd; 1012107289Sluigi double d = 1.0 * p->d[0]; 1013107289Sluigi 1014107289Sluigi d = (d / 0x7fffffff); 1015107289Sluigi printf("prob %f ", d); 1016107289Sluigi } 1017107289Sluigi } 1018107289Sluigi 1019107289Sluigi /* 102098943Sluigi * first print actions 102198943Sluigi */ 102298943Sluigi for (l = rule->cmd_len - rule->act_ofs, cmd = ACTION_PTR(rule); 102398943Sluigi l > 0 ; l -= F_LEN(cmd), cmd += F_LEN(cmd)) { 102498943Sluigi switch(cmd->opcode) { 102598943Sluigi case O_CHECK_STATE: 102698943Sluigi printf("check-state"); 1027205179Sluigi /* avoid printing anything else */ 1028205179Sluigi flags = HAVE_PROTO | HAVE_SRCIP | 1029205179Sluigi HAVE_DSTIP | HAVE_IP; 103098943Sluigi break; 103198943Sluigi 103298943Sluigi case O_ACCEPT: 103398943Sluigi printf("allow"); 103498943Sluigi break; 103598943Sluigi 103698943Sluigi case O_COUNT: 103798943Sluigi printf("count"); 103898943Sluigi break; 103998943Sluigi 104098943Sluigi case O_DENY: 104198943Sluigi printf("deny"); 104298943Sluigi break; 104398943Sluigi 104499475Sluigi case O_REJECT: 104599475Sluigi if (cmd->arg1 == ICMP_REJECT_RST) 104699475Sluigi printf("reset"); 104799475Sluigi else if (cmd->arg1 == ICMP_UNREACH_HOST) 104899475Sluigi printf("reject"); 104999475Sluigi else 105099475Sluigi print_reject_code(cmd->arg1); 105199475Sluigi break; 105299475Sluigi 1053149020Sbz case O_UNREACH6: 1054149020Sbz if (cmd->arg1 == ICMP6_UNREACH_RST) 1055149020Sbz printf("reset6"); 1056149020Sbz else 1057149020Sbz print_unreach6_code(cmd->arg1); 1058149020Sbz break; 1059149020Sbz 1060159636Soleg case O_SKIPTO: 1061159636Soleg PRINT_UINT_ARG("skipto ", cmd->arg1); 106298943Sluigi break; 106398943Sluigi 106498943Sluigi case O_PIPE: 1065159636Soleg PRINT_UINT_ARG("pipe ", cmd->arg1); 1066159636Soleg break; 1067159636Soleg 106898943Sluigi case O_QUEUE: 1069159636Soleg PRINT_UINT_ARG("queue ", cmd->arg1); 1070159636Soleg break; 1071159636Soleg 107298943Sluigi case O_DIVERT: 1073159636Soleg PRINT_UINT_ARG("divert ", cmd->arg1); 1074159636Soleg break; 1075159636Soleg 107698943Sluigi case O_TEE: 1077159636Soleg PRINT_UINT_ARG("tee ", cmd->arg1); 1078159636Soleg break; 1079159636Soleg 1080141351Sglebius case O_NETGRAPH: 1081159636Soleg PRINT_UINT_ARG("netgraph ", cmd->arg1); 1082159636Soleg break; 1083159636Soleg 1084141351Sglebius case O_NGTEE: 1085159636Soleg PRINT_UINT_ARG("ngtee ", cmd->arg1); 1086159636Soleg break; 1087141351Sglebius 108898943Sluigi case O_FORWARD_IP: 108998943Sluigi { 109098943Sluigi ipfw_insn_sa *s = (ipfw_insn_sa *)cmd; 109198943Sluigi 1092161424Sjulian if (s->sa.sin_addr.s_addr == INADDR_ANY) { 1093161424Sjulian printf("fwd tablearg"); 1094161424Sjulian } else { 1095161424Sjulian printf("fwd %s", inet_ntoa(s->sa.sin_addr)); 1096161424Sjulian } 109798943Sluigi if (s->sa.sin_port) 1098103241Sluigi printf(",%d", s->sa.sin_port); 109998943Sluigi } 110098943Sluigi break; 110198943Sluigi 110298943Sluigi case O_LOG: /* O_LOG is printed last */ 110398943Sluigi logptr = (ipfw_insn_log *)cmd; 110498943Sluigi break; 110598943Sluigi 1106136071Sgreen case O_ALTQ: /* O_ALTQ is printed after O_LOG */ 1107136071Sgreen altqptr = (ipfw_insn_altq *)cmd; 1108136071Sgreen break; 1109136071Sgreen 1110158879Soleg case O_TAG: 1111158879Soleg tagptr = cmd; 1112158879Soleg break; 1113158879Soleg 1114165648Spiso case O_NAT: 1115176517Spiso PRINT_UINT_ARG("nat ", cmd->arg1); 1116165648Spiso break; 1117165648Spiso 1118178888Sjulian case O_SETFIB: 1119178888Sjulian PRINT_UINT_ARG("setfib ", cmd->arg1); 1120178888Sjulian break; 1121190633Spiso 1122190633Spiso case O_REASS: 1123190633Spiso printf("reass"); 1124190633Spiso break; 1125178888Sjulian 112698943Sluigi default: 1127136071Sgreen printf("** unrecognized action %d len %d ", 112898943Sluigi cmd->opcode, cmd->len); 112998943Sluigi } 113098943Sluigi } 113198943Sluigi if (logptr) { 113298943Sluigi if (logptr->max_log > 0) 113399909Sluigi printf(" log logamount %d", logptr->max_log); 113498943Sluigi else 113599909Sluigi printf(" log"); 113698943Sluigi } 1137204591Sluigi#ifndef NO_ALTQ 1138136071Sgreen if (altqptr) { 1139187983Sluigi print_altq_cmd(altqptr); 1140136071Sgreen } 1141204591Sluigi#endif 1142158879Soleg if (tagptr) { 1143158879Soleg if (tagptr->len & F_NOT) 1144159636Soleg PRINT_UINT_ARG(" untag ", tagptr->arg1); 1145158879Soleg else 1146159636Soleg PRINT_UINT_ARG(" tag ", tagptr->arg1); 1147158879Soleg } 1148136071Sgreen 114998943Sluigi /* 1150102087Sluigi * then print the body. 115198943Sluigi */ 1152146894Smlaier for (l = rule->act_ofs, cmd = rule->cmd ; 1153146894Smlaier l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 1154146894Smlaier if ((cmd->len & F_OR) || (cmd->len & F_NOT)) 1155146894Smlaier continue; 1156146894Smlaier if (cmd->opcode == O_IP4) { 1157146894Smlaier flags |= HAVE_PROTO4; 1158146894Smlaier break; 1159146894Smlaier } else if (cmd->opcode == O_IP6) { 1160146894Smlaier flags |= HAVE_PROTO6; 1161146894Smlaier break; 1162146894Smlaier } 1163146894Smlaier } 1164102087Sluigi if (rule->_pad & 1) { /* empty rules before options */ 1165187764Sluigi if (!co.do_compact) { 1166146894Smlaier show_prerequisites(&flags, HAVE_PROTO, 0); 1167146894Smlaier printf(" from any to any"); 1168146894Smlaier } 1169205179Sluigi flags |= HAVE_IP | HAVE_OPTIONS | HAVE_PROTO | 1170205179Sluigi HAVE_SRCIP | HAVE_DSTIP; 1171102087Sluigi } 1172102087Sluigi 1173187764Sluigi if (co.comment_only) 1174123495Sluigi comment = "..."; 1175123495Sluigi 117698943Sluigi for (l = rule->act_ofs, cmd = rule->cmd ; 117798943Sluigi l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 117899475Sluigi /* useful alias */ 117999475Sluigi ipfw_insn_u32 *cmd32 = (ipfw_insn_u32 *)cmd; 118098943Sluigi 1181187764Sluigi if (co.comment_only) { 1182123495Sluigi if (cmd->opcode != O_NOP) 1183123495Sluigi continue; 1184123495Sluigi printf(" // %s\n", (char *)(cmd + 1)); 1185123495Sluigi return; 1186123495Sluigi } 1187123495Sluigi 1188102087Sluigi show_prerequisites(&flags, 0, cmd->opcode); 1189102087Sluigi 119098943Sluigi switch(cmd->opcode) { 1191117577Sluigi case O_PROB: 1192107289Sluigi break; /* done already */ 1193107289Sluigi 119498943Sluigi case O_PROBE_STATE: 119598943Sluigi break; /* no need to print anything here */ 119698943Sluigi 119798943Sluigi case O_IP_SRC: 1198130281Sru case O_IP_SRC_LOOKUP: 119998943Sluigi case O_IP_SRC_MASK: 120098943Sluigi case O_IP_SRC_ME: 120198943Sluigi case O_IP_SRC_SET: 1202102087Sluigi show_prerequisites(&flags, HAVE_PROTO, 0); 120398943Sluigi if (!(flags & HAVE_SRCIP)) 120498943Sluigi printf(" from"); 120598943Sluigi if ((cmd->len & F_OR) && !or_block) 120698943Sluigi printf(" {"); 1207102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1208102087Sluigi (flags & HAVE_OPTIONS) ? " src-ip" : ""); 120998943Sluigi flags |= HAVE_SRCIP; 121098943Sluigi break; 121198943Sluigi 121298943Sluigi case O_IP_DST: 1213130281Sru case O_IP_DST_LOOKUP: 121498943Sluigi case O_IP_DST_MASK: 121598943Sluigi case O_IP_DST_ME: 121698943Sluigi case O_IP_DST_SET: 1217102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 121898943Sluigi if (!(flags & HAVE_DSTIP)) 121998943Sluigi printf(" to"); 122098943Sluigi if ((cmd->len & F_OR) && !or_block) 122198943Sluigi printf(" {"); 1222102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1223102087Sluigi (flags & HAVE_OPTIONS) ? " dst-ip" : ""); 122498943Sluigi flags |= HAVE_DSTIP; 122598943Sluigi break; 122698943Sluigi 1227145246Sbrooks case O_IP6_SRC: 1228145246Sbrooks case O_IP6_SRC_MASK: 1229145246Sbrooks case O_IP6_SRC_ME: 1230147105Smlaier show_prerequisites(&flags, HAVE_PROTO, 0); 1231145246Sbrooks if (!(flags & HAVE_SRCIP)) 1232145246Sbrooks printf(" from"); 1233145246Sbrooks if ((cmd->len & F_OR) && !or_block) 1234145246Sbrooks printf(" {"); 1235145246Sbrooks print_ip6((ipfw_insn_ip6 *)cmd, 1236145246Sbrooks (flags & HAVE_OPTIONS) ? " src-ip6" : ""); 1237145246Sbrooks flags |= HAVE_SRCIP | HAVE_PROTO; 1238145246Sbrooks break; 1239145246Sbrooks 1240145246Sbrooks case O_IP6_DST: 1241145246Sbrooks case O_IP6_DST_MASK: 1242145246Sbrooks case O_IP6_DST_ME: 1243145246Sbrooks show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 1244145246Sbrooks if (!(flags & HAVE_DSTIP)) 1245145246Sbrooks printf(" to"); 1246145246Sbrooks if ((cmd->len & F_OR) && !or_block) 1247145246Sbrooks printf(" {"); 1248145246Sbrooks print_ip6((ipfw_insn_ip6 *)cmd, 1249145246Sbrooks (flags & HAVE_OPTIONS) ? " dst-ip6" : ""); 1250145246Sbrooks flags |= HAVE_DSTIP; 1251145246Sbrooks break; 1252145246Sbrooks 1253145246Sbrooks case O_FLOW6ID: 1254145246Sbrooks print_flow6id( (ipfw_insn_u32 *) cmd ); 1255145246Sbrooks flags |= HAVE_OPTIONS; 1256145246Sbrooks break; 1257145246Sbrooks 125898943Sluigi case O_IP_DSTPORT: 1259205179Sluigi show_prerequisites(&flags, 1260205179Sluigi HAVE_PROTO | HAVE_SRCIP | 1261205179Sluigi HAVE_DSTIP | HAVE_IP, 0); 126298943Sluigi case O_IP_SRCPORT: 1263205179Sluigi show_prerequisites(&flags, 1264205179Sluigi HAVE_PROTO | HAVE_SRCIP, 0); 1265101641Sluigi if ((cmd->len & F_OR) && !or_block) 1266101641Sluigi printf(" {"); 1267172306Smaxim if (cmd->len & F_NOT) 1268172306Smaxim printf(" not"); 1269102087Sluigi print_newports((ipfw_insn_u16 *)cmd, proto, 1270102087Sluigi (flags & HAVE_OPTIONS) ? cmd->opcode : 0); 127198943Sluigi break; 127298943Sluigi 127398943Sluigi case O_PROTO: { 1274145246Sbrooks struct protoent *pe = NULL; 127598943Sluigi 127698943Sluigi if ((cmd->len & F_OR) && !or_block) 127798943Sluigi printf(" {"); 127898943Sluigi if (cmd->len & F_NOT) 127998943Sluigi printf(" not"); 128098943Sluigi proto = cmd->arg1; 1281145567Sbrooks pe = getprotobynumber(cmd->arg1); 1282146894Smlaier if ((flags & (HAVE_PROTO4 | HAVE_PROTO6)) && 1283146894Smlaier !(flags & HAVE_PROTO)) 1284146894Smlaier show_prerequisites(&flags, 1285205179Sluigi HAVE_PROTO | HAVE_IP | HAVE_SRCIP | 1286205179Sluigi HAVE_DSTIP | HAVE_OPTIONS, 0); 1287102087Sluigi if (flags & HAVE_OPTIONS) 1288102087Sluigi printf(" proto"); 128998943Sluigi if (pe) 129098943Sluigi printf(" %s", pe->p_name); 129198943Sluigi else 129298943Sluigi printf(" %u", cmd->arg1); 129398943Sluigi } 129498943Sluigi flags |= HAVE_PROTO; 129598943Sluigi break; 1296106505Smaxim 129798943Sluigi default: /*options ... */ 1298146894Smlaier if (!(cmd->len & (F_OR|F_NOT))) 1299146894Smlaier if (((cmd->opcode == O_IP6) && 1300146894Smlaier (flags & HAVE_PROTO6)) || 1301146894Smlaier ((cmd->opcode == O_IP4) && 1302146894Smlaier (flags & HAVE_PROTO4))) 1303146894Smlaier break; 1304205179Sluigi show_prerequisites(&flags, HAVE_PROTO | HAVE_SRCIP | 1305205179Sluigi HAVE_DSTIP | HAVE_IP | HAVE_OPTIONS, 0); 130698943Sluigi if ((cmd->len & F_OR) && !or_block) 130798943Sluigi printf(" {"); 130898943Sluigi if (cmd->len & F_NOT && cmd->opcode != O_IN) 130998943Sluigi printf(" not"); 131098943Sluigi switch(cmd->opcode) { 1311169139Smaxim case O_MACADDR2: { 1312169139Smaxim ipfw_insn_mac *m = (ipfw_insn_mac *)cmd; 1313169139Smaxim 1314169139Smaxim printf(" MAC"); 1315169139Smaxim print_mac(m->addr, m->mask); 1316169139Smaxim print_mac(m->addr + 6, m->mask + 6); 1317169139Smaxim } 1318169139Smaxim break; 1319169139Smaxim 1320169139Smaxim case O_MAC_TYPE: 1321169139Smaxim print_newports((ipfw_insn_u16 *)cmd, 1322169139Smaxim IPPROTO_ETHERTYPE, cmd->opcode); 1323169139Smaxim break; 1324169139Smaxim 1325169139Smaxim 132698943Sluigi case O_FRAG: 132798943Sluigi printf(" frag"); 132898943Sluigi break; 132998943Sluigi 1330178888Sjulian case O_FIB: 1331178888Sjulian printf(" fib %u", cmd->arg1 ); 1332178888Sjulian break; 1333178888Sjulian 133498943Sluigi case O_IN: 133598943Sluigi printf(cmd->len & F_NOT ? " out" : " in"); 133698943Sluigi break; 133798943Sluigi 1338136073Sgreen case O_DIVERTED: 1339136073Sgreen switch (cmd->arg1) { 1340136073Sgreen case 3: 1341136073Sgreen printf(" diverted"); 1342136073Sgreen break; 1343136073Sgreen case 1: 1344136073Sgreen printf(" diverted-loopback"); 1345136073Sgreen break; 1346136073Sgreen case 2: 1347136073Sgreen printf(" diverted-output"); 1348136073Sgreen break; 1349136073Sgreen default: 1350136073Sgreen printf(" diverted-?<%u>", cmd->arg1); 1351136073Sgreen break; 1352136073Sgreen } 1353136073Sgreen break; 1354136073Sgreen 135598943Sluigi case O_LAYER2: 135698943Sluigi printf(" layer2"); 135798943Sluigi break; 135898943Sluigi case O_XMIT: 135998943Sluigi case O_RECV: 1360140423Sglebius case O_VIA: 1361140423Sglebius { 1362117469Sluigi char const *s; 136398943Sluigi ipfw_insn_if *cmdif = (ipfw_insn_if *)cmd; 136498943Sluigi 136598943Sluigi if (cmd->opcode == O_XMIT) 136698943Sluigi s = "xmit"; 136798943Sluigi else if (cmd->opcode == O_RECV) 136898943Sluigi s = "recv"; 1369117469Sluigi else /* if (cmd->opcode == O_VIA) */ 137098943Sluigi s = "via"; 137198943Sluigi if (cmdif->name[0] == '\0') 137299475Sluigi printf(" %s %s", s, 137399475Sluigi inet_ntoa(cmdif->p.ip)); 1374140423Sglebius else 1375140423Sglebius printf(" %s %s", s, cmdif->name); 1376140423Sglebius 137798943Sluigi break; 1378140423Sglebius } 137998943Sluigi case O_IPID: 1380116690Sluigi if (F_LEN(cmd) == 1) 1381116690Sluigi printf(" ipid %u", cmd->arg1 ); 1382116690Sluigi else 1383116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1384116690Sluigi O_IPID); 138598943Sluigi break; 138698943Sluigi 138798943Sluigi case O_IPTTL: 1388116690Sluigi if (F_LEN(cmd) == 1) 1389116690Sluigi printf(" ipttl %u", cmd->arg1 ); 1390116690Sluigi else 1391116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1392116690Sluigi O_IPTTL); 139398943Sluigi break; 139498943Sluigi 139598943Sluigi case O_IPVER: 139698943Sluigi printf(" ipver %u", cmd->arg1 ); 139798943Sluigi break; 139898943Sluigi 139999475Sluigi case O_IPPRECEDENCE: 140099475Sluigi printf(" ipprecedence %u", (cmd->arg1) >> 5 ); 140199475Sluigi break; 140299475Sluigi 140398943Sluigi case O_IPLEN: 1404116690Sluigi if (F_LEN(cmd) == 1) 1405116690Sluigi printf(" iplen %u", cmd->arg1 ); 1406116690Sluigi else 1407116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1408116690Sluigi O_IPLEN); 140998943Sluigi break; 141098943Sluigi 1411101116Sluigi case O_IPOPT: 141298943Sluigi print_flags("ipoptions", cmd, f_ipopts); 141398943Sluigi break; 141498943Sluigi 141599475Sluigi case O_IPTOS: 141699475Sluigi print_flags("iptos", cmd, f_iptos); 141799475Sluigi break; 141899475Sluigi 141999475Sluigi case O_ICMPTYPE: 142099475Sluigi print_icmptypes((ipfw_insn_u32 *)cmd); 142199475Sluigi break; 142299475Sluigi 142398943Sluigi case O_ESTAB: 142498943Sluigi printf(" established"); 142598943Sluigi break; 142698943Sluigi 1427136075Sgreen case O_TCPDATALEN: 1428136075Sgreen if (F_LEN(cmd) == 1) 1429136075Sgreen printf(" tcpdatalen %u", cmd->arg1 ); 1430136075Sgreen else 1431136075Sgreen print_newports((ipfw_insn_u16 *)cmd, 0, 1432136075Sgreen O_TCPDATALEN); 1433136075Sgreen break; 1434136075Sgreen 143598943Sluigi case O_TCPFLAGS: 143698943Sluigi print_flags("tcpflags", cmd, f_tcpflags); 143798943Sluigi break; 143898943Sluigi 143998943Sluigi case O_TCPOPTS: 144098943Sluigi print_flags("tcpoptions", cmd, f_tcpopts); 144198943Sluigi break; 144298943Sluigi 144398943Sluigi case O_TCPWIN: 144498943Sluigi printf(" tcpwin %d", ntohs(cmd->arg1)); 144598943Sluigi break; 144698943Sluigi 144798943Sluigi case O_TCPACK: 144898943Sluigi printf(" tcpack %d", ntohl(cmd32->d[0])); 144998943Sluigi break; 145098943Sluigi 145198943Sluigi case O_TCPSEQ: 145298943Sluigi printf(" tcpseq %d", ntohl(cmd32->d[0])); 145398943Sluigi break; 145498943Sluigi 145598943Sluigi case O_UID: 145698943Sluigi { 145798943Sluigi struct passwd *pwd = getpwuid(cmd32->d[0]); 145898943Sluigi 145998943Sluigi if (pwd) 146098943Sluigi printf(" uid %s", pwd->pw_name); 146198943Sluigi else 146298943Sluigi printf(" uid %u", cmd32->d[0]); 146398943Sluigi } 146498943Sluigi break; 146598943Sluigi 146698943Sluigi case O_GID: 146798943Sluigi { 146898943Sluigi struct group *grp = getgrgid(cmd32->d[0]); 146998943Sluigi 147098943Sluigi if (grp) 147198943Sluigi printf(" gid %s", grp->gr_name); 147298943Sluigi else 147398943Sluigi printf(" gid %u", cmd32->d[0]); 147498943Sluigi } 147598943Sluigi break; 147698943Sluigi 1477133600Scsjp case O_JAIL: 1478133600Scsjp printf(" jail %d", cmd32->d[0]); 1479133600Scsjp break; 1480133600Scsjp 1481112250Scjc case O_VERREVPATH: 1482112250Scjc printf(" verrevpath"); 1483112250Scjc break; 1484116919Sluigi 1485128575Sandre case O_VERSRCREACH: 1486128575Sandre printf(" versrcreach"); 1487128575Sandre break; 1488128575Sandre 1489133387Sandre case O_ANTISPOOF: 1490133387Sandre printf(" antispoof"); 1491133387Sandre break; 1492133387Sandre 1493117241Sluigi case O_IPSEC: 1494117241Sluigi printf(" ipsec"); 1495117241Sluigi break; 1496117241Sluigi 1497117469Sluigi case O_NOP: 1498117626Sluigi comment = (char *)(cmd + 1); 1499117469Sluigi break; 1500117469Sluigi 150198943Sluigi case O_KEEP_STATE: 150298943Sluigi printf(" keep-state"); 150398943Sluigi break; 150498943Sluigi 1505159636Soleg case O_LIMIT: { 150698943Sluigi struct _s_x *p = limit_masks; 150798943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 1508117328Sluigi uint8_t x = c->limit_mask; 1509117469Sluigi char const *comma = " "; 151098943Sluigi 151198943Sluigi printf(" limit"); 1512117577Sluigi for (; p->x != 0 ; p++) 151399909Sluigi if ((x & p->x) == p->x) { 151498943Sluigi x &= ~p->x; 151598943Sluigi printf("%s%s", comma, p->s); 151698943Sluigi comma = ","; 151798943Sluigi } 1518159636Soleg PRINT_UINT_ARG(" ", c->conn_limit); 151998943Sluigi break; 1520159636Soleg } 152198943Sluigi 1522146894Smlaier case O_IP6: 1523152923Sume printf(" ip6"); 1524145246Sbrooks break; 1525145246Sbrooks 1526146894Smlaier case O_IP4: 1527152923Sume printf(" ip4"); 1528146894Smlaier break; 1529146894Smlaier 1530145246Sbrooks case O_ICMP6TYPE: 1531145246Sbrooks print_icmp6types((ipfw_insn_u32 *)cmd); 1532145246Sbrooks break; 1533145246Sbrooks 1534145246Sbrooks case O_EXT_HDR: 1535145246Sbrooks print_ext6hdr( (ipfw_insn *) cmd ); 1536145246Sbrooks break; 1537145246Sbrooks 1538158879Soleg case O_TAGGED: 1539158879Soleg if (F_LEN(cmd) == 1) 1540159636Soleg PRINT_UINT_ARG(" tagged ", cmd->arg1); 1541158879Soleg else 1542159636Soleg print_newports((ipfw_insn_u16 *)cmd, 0, 1543159636Soleg O_TAGGED); 1544158879Soleg break; 1545158879Soleg 154698943Sluigi default: 154798943Sluigi printf(" [opcode %d len %d]", 154898943Sluigi cmd->opcode, cmd->len); 154998943Sluigi } 155098943Sluigi } 155198943Sluigi if (cmd->len & F_OR) { 155298943Sluigi printf(" or"); 155398943Sluigi or_block = 1; 155498943Sluigi } else if (or_block) { 155598943Sluigi printf(" }"); 155698943Sluigi or_block = 0; 155798943Sluigi } 155898943Sluigi } 1559205179Sluigi show_prerequisites(&flags, HAVE_PROTO | HAVE_SRCIP | HAVE_DSTIP 1560205179Sluigi | HAVE_IP, 0); 1561117626Sluigi if (comment) 1562117626Sluigi printf(" // %s", comment); 156398943Sluigi printf("\n"); 156498943Sluigi} 156598943Sluigi 156698943Sluigistatic void 1567112189Smaximshow_dyn_ipfw(ipfw_dyn_rule *d, int pcwidth, int bcwidth) 156898943Sluigi{ 156998943Sluigi struct protoent *pe; 157098943Sluigi struct in_addr a; 1571115793Sticso uint16_t rulenum; 1572159160Smlaier char buf[INET6_ADDRSTRLEN]; 157398943Sluigi 1574187764Sluigi if (!co.do_expired) { 157598943Sluigi if (!d->expire && !(d->dyn_type == O_LIMIT_PARENT)) 157698943Sluigi return; 157798943Sluigi } 1578115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 1579117328Sluigi printf("%05d", rulenum); 1580117469Sluigi if (pcwidth>0 || bcwidth>0) 1581117328Sluigi printf(" %*llu %*llu (%ds)", pcwidth, 1582117328Sluigi align_uint64(&d->pcnt), bcwidth, 1583117328Sluigi align_uint64(&d->bcnt), d->expire); 158498943Sluigi switch (d->dyn_type) { 158598943Sluigi case O_LIMIT_PARENT: 158698943Sluigi printf(" PARENT %d", d->count); 158798943Sluigi break; 158898943Sluigi case O_LIMIT: 158998943Sluigi printf(" LIMIT"); 159098943Sluigi break; 159198943Sluigi case O_KEEP_STATE: /* bidir, no mask */ 1592106505Smaxim printf(" STATE"); 159398943Sluigi break; 159498943Sluigi } 159598943Sluigi 159698943Sluigi if ((pe = getprotobynumber(d->id.proto)) != NULL) 159798943Sluigi printf(" %s", pe->p_name); 159898943Sluigi else 159998943Sluigi printf(" proto %u", d->id.proto); 160098943Sluigi 1601159160Smlaier if (d->id.addr_type == 4) { 1602159160Smlaier a.s_addr = htonl(d->id.src_ip); 1603159160Smlaier printf(" %s %d", inet_ntoa(a), d->id.src_port); 160498943Sluigi 1605159160Smlaier a.s_addr = htonl(d->id.dst_ip); 1606159160Smlaier printf(" <-> %s %d", inet_ntoa(a), d->id.dst_port); 1607159160Smlaier } else if (d->id.addr_type == 6) { 1608159160Smlaier printf(" %s %d", inet_ntop(AF_INET6, &d->id.src_ip6, buf, 1609159160Smlaier sizeof(buf)), d->id.src_port); 1610159160Smlaier printf(" <-> %s %d", inet_ntop(AF_INET6, &d->id.dst_ip6, buf, 1611159160Smlaier sizeof(buf)), d->id.dst_port); 1612159160Smlaier } else 1613159160Smlaier printf(" UNKNOWN <-> UNKNOWN\n"); 1614159160Smlaier 161598943Sluigi printf("\n"); 161698943Sluigi} 161798943Sluigi 1618101978Sluigi/* 1619101978Sluigi * This one handles all set-related commands 1620101978Sluigi * ipfw set { show | enable | disable } 1621101978Sluigi * ipfw set swap X Y 1622101978Sluigi * ipfw set move X to Y 1623101978Sluigi * ipfw set move rule X to Y 1624101978Sluigi */ 1625187767Sluigivoid 1626204591Sluigiipfw_sets_handler(char *av[]) 1627101978Sluigi{ 1628117328Sluigi uint32_t set_disable, masks[2]; 1629101978Sluigi int i, nbytes; 1630117328Sluigi uint16_t rulenum; 1631117328Sluigi uint8_t cmd, new_set; 1632101978Sluigi 1633101978Sluigi av++; 1634101978Sluigi 1635204591Sluigi if (av[0] == NULL) 1636101978Sluigi errx(EX_USAGE, "set needs command"); 1637140271Sbrooks if (_substrcmp(*av, "show") == 0) { 1638204717Sluigi void *data = NULL; 1639117469Sluigi char const *msg; 1640204717Sluigi int nalloc; 1641101978Sluigi 1642204717Sluigi nalloc = nbytes = sizeof(struct ip_fw); 1643204717Sluigi while (nbytes >= nalloc) { 1644204717Sluigi if (data) 1645204717Sluigi free(data); 1646204717Sluigi nalloc = nalloc * 2 + 200; 1647204717Sluigi nbytes = nalloc; 1648187716Sluigi data = safe_calloc(1, nbytes); 1649119740Stmm if (do_cmd(IP_FW_GET, data, (uintptr_t)&nbytes) < 0) 1650101978Sluigi err(EX_OSERR, "getsockopt(IP_FW_GET)"); 1651204717Sluigi } 1652204717Sluigi 1653115793Sticso bcopy(&((struct ip_fw *)data)->next_rule, 1654115793Sticso &set_disable, sizeof(set_disable)); 1655101978Sluigi 1656117655Sluigi for (i = 0, msg = "disable" ; i < RESVD_SET; i++) 1657117577Sluigi if ((set_disable & (1<<i))) { 1658101978Sluigi printf("%s %d", msg, i); 1659101978Sluigi msg = ""; 1660101978Sluigi } 1661101978Sluigi msg = (set_disable) ? " enable" : "enable"; 1662117655Sluigi for (i = 0; i < RESVD_SET; i++) 1663117577Sluigi if (!(set_disable & (1<<i))) { 1664101978Sluigi printf("%s %d", msg, i); 1665101978Sluigi msg = ""; 1666101978Sluigi } 1667101978Sluigi printf("\n"); 1668140271Sbrooks } else if (_substrcmp(*av, "swap") == 0) { 1669204591Sluigi av++; 1670204591Sluigi if ( av[0] == NULL || av[1] == NULL ) 1671101978Sluigi errx(EX_USAGE, "set swap needs 2 set numbers\n"); 1672101978Sluigi rulenum = atoi(av[0]); 1673101978Sluigi new_set = atoi(av[1]); 1674117655Sluigi if (!isdigit(*(av[0])) || rulenum > RESVD_SET) 1675101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[0]); 1676117655Sluigi if (!isdigit(*(av[1])) || new_set > RESVD_SET) 1677101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[1]); 1678101978Sluigi masks[0] = (4 << 24) | (new_set << 16) | (rulenum); 1679117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(uint32_t)); 1680140271Sbrooks } else if (_substrcmp(*av, "move") == 0) { 1681204591Sluigi av++; 1682204717Sluigi if (av[0] && _substrcmp(*av, "rule") == 0) { 1683101978Sluigi cmd = 2; 1684204591Sluigi av++; 1685101978Sluigi } else 1686101978Sluigi cmd = 3; 1687204591Sluigi if (av[0] == NULL || av[1] == NULL || av[2] == NULL || 1688204591Sluigi av[3] != NULL || _substrcmp(av[1], "to") != 0) 1689101978Sluigi errx(EX_USAGE, "syntax: set move [rule] X to Y\n"); 1690101978Sluigi rulenum = atoi(av[0]); 1691101978Sluigi new_set = atoi(av[2]); 1692117655Sluigi if (!isdigit(*(av[0])) || (cmd == 3 && rulenum > RESVD_SET) || 1693182823Srik (cmd == 2 && rulenum == IPFW_DEFAULT_RULE) ) 1694101978Sluigi errx(EX_DATAERR, "invalid source number %s\n", av[0]); 1695117655Sluigi if (!isdigit(*(av[2])) || new_set > RESVD_SET) 1696101978Sluigi errx(EX_DATAERR, "invalid dest. set %s\n", av[1]); 1697101978Sluigi masks[0] = (cmd << 24) | (new_set << 16) | (rulenum); 1698117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(uint32_t)); 1699140271Sbrooks } else if (_substrcmp(*av, "disable") == 0 || 1700140271Sbrooks _substrcmp(*av, "enable") == 0 ) { 1701140271Sbrooks int which = _substrcmp(*av, "enable") == 0 ? 1 : 0; 1702101978Sluigi 1703204591Sluigi av++; 1704101978Sluigi masks[0] = masks[1] = 0; 1705101978Sluigi 1706204717Sluigi while (av[0]) { 1707101978Sluigi if (isdigit(**av)) { 1708101978Sluigi i = atoi(*av); 1709117655Sluigi if (i < 0 || i > RESVD_SET) 1710101978Sluigi errx(EX_DATAERR, 1711101978Sluigi "invalid set number %d\n", i); 1712101978Sluigi masks[which] |= (1<<i); 1713140271Sbrooks } else if (_substrcmp(*av, "disable") == 0) 1714101978Sluigi which = 0; 1715140271Sbrooks else if (_substrcmp(*av, "enable") == 0) 1716101978Sluigi which = 1; 1717101978Sluigi else 1718101978Sluigi errx(EX_DATAERR, 1719101978Sluigi "invalid set command %s\n", *av); 1720204591Sluigi av++; 1721101978Sluigi } 1722101978Sluigi if ( (masks[0] & masks[1]) != 0 ) 1723101978Sluigi errx(EX_DATAERR, 1724101978Sluigi "cannot enable and disable the same set\n"); 1725101978Sluigi 1726117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(masks)); 1727101978Sluigi if (i) 1728101978Sluigi warn("set enable/disable: setsockopt(IP_FW_DEL)"); 1729101978Sluigi } else 1730101978Sluigi errx(EX_USAGE, "invalid set command %s\n", *av); 1731101978Sluigi} 1732101978Sluigi 1733187767Sluigivoid 1734204591Sluigiipfw_sysctl_handler(char *av[], int which) 1735109126Sdillon{ 1736109126Sdillon av++; 1737109126Sdillon 1738204591Sluigi if (av[0] == NULL) { 1739109126Sdillon warnx("missing keyword to enable/disable\n"); 1740140271Sbrooks } else if (_substrcmp(*av, "firewall") == 0) { 1741116770Sluigi sysctlbyname("net.inet.ip.fw.enable", NULL, 0, 1742116770Sluigi &which, sizeof(which)); 1743206266Sume sysctlbyname("net.inet6.ip6.fw.enable", NULL, 0, 1744206266Sume &which, sizeof(which)); 1745140271Sbrooks } else if (_substrcmp(*av, "one_pass") == 0) { 1746116770Sluigi sysctlbyname("net.inet.ip.fw.one_pass", NULL, 0, 1747116770Sluigi &which, sizeof(which)); 1748140271Sbrooks } else if (_substrcmp(*av, "debug") == 0) { 1749116770Sluigi sysctlbyname("net.inet.ip.fw.debug", NULL, 0, 1750116770Sluigi &which, sizeof(which)); 1751140271Sbrooks } else if (_substrcmp(*av, "verbose") == 0) { 1752116770Sluigi sysctlbyname("net.inet.ip.fw.verbose", NULL, 0, 1753116770Sluigi &which, sizeof(which)); 1754140271Sbrooks } else if (_substrcmp(*av, "dyn_keepalive") == 0) { 1755116770Sluigi sysctlbyname("net.inet.ip.fw.dyn_keepalive", NULL, 0, 1756116770Sluigi &which, sizeof(which)); 1757204591Sluigi#ifndef NO_ALTQ 1758140271Sbrooks } else if (_substrcmp(*av, "altq") == 0) { 1759136071Sgreen altq_set_enabled(which); 1760204591Sluigi#endif 1761109126Sdillon } else { 1762109126Sdillon warnx("unrecognize enable/disable keyword: %s\n", *av); 1763109126Sdillon } 1764109126Sdillon} 1765109126Sdillon 1766187767Sluigivoid 1767187767Sluigiipfw_list(int ac, char *av[], int show_counters) 176898943Sluigi{ 176998943Sluigi struct ip_fw *r; 177098943Sluigi ipfw_dyn_rule *dynrules, *d; 177198943Sluigi 1772117469Sluigi#define NEXT(r) ((struct ip_fw *)((char *)r + RULESIZE(r))) 1773117469Sluigi char *lim; 1774117469Sluigi void *data = NULL; 1775112189Smaxim int bcwidth, n, nbytes, nstat, ndyn, pcwidth, width; 177698943Sluigi int exitval = EX_OK; 177798943Sluigi int lac; 177898943Sluigi char **lav; 1779117469Sluigi u_long rnum, last; 178098943Sluigi char *endptr; 178198943Sluigi int seen = 0; 1782170923Smaxim uint8_t set; 178398943Sluigi 1784187764Sluigi const int ocmd = co.do_pipe ? IP_DUMMYNET_GET : IP_FW_GET; 178598943Sluigi int nalloc = 1024; /* start somewhere... */ 178698943Sluigi 1787135036Smaxim last = 0; 1788135036Smaxim 1789187764Sluigi if (co.test_only) { 1790117328Sluigi fprintf(stderr, "Testing only, list disabled\n"); 1791117328Sluigi return; 1792117328Sluigi } 1793204591Sluigi if (co.do_pipe) { 1794204591Sluigi dummynet_list(ac, av, show_counters); 1795204591Sluigi return; 1796204591Sluigi } 1797117328Sluigi 179898943Sluigi ac--; 179998943Sluigi av++; 180098943Sluigi 180198943Sluigi /* get rules or pipes from kernel, resizing array as necessary */ 180298943Sluigi nbytes = nalloc; 180398943Sluigi 180498943Sluigi while (nbytes >= nalloc) { 180598943Sluigi nalloc = nalloc * 2 + 200; 180698943Sluigi nbytes = nalloc; 1807187716Sluigi data = safe_realloc(data, nbytes); 1808119740Stmm if (do_cmd(ocmd, data, (uintptr_t)&nbytes) < 0) 180998943Sluigi err(EX_OSERR, "getsockopt(IP_%s_GET)", 1810187764Sluigi co.do_pipe ? "DUMMYNET" : "FW"); 181198943Sluigi } 181298943Sluigi 181398943Sluigi /* 181498943Sluigi * Count static rules. They have variable size so we 181598943Sluigi * need to scan the list to count them. 181698943Sluigi */ 1817117469Sluigi for (nstat = 1, r = data, lim = (char *)data + nbytes; 1818182823Srik r->rulenum < IPFW_DEFAULT_RULE && (char *)r < lim; 1819117469Sluigi ++nstat, r = NEXT(r) ) 182098943Sluigi ; /* nothing */ 182198943Sluigi 182298943Sluigi /* 182398943Sluigi * Count dynamic rules. This is easier as they have 182498943Sluigi * fixed size. 182598943Sluigi */ 1826117469Sluigi r = NEXT(r); 182798943Sluigi dynrules = (ipfw_dyn_rule *)r ; 1828117469Sluigi n = (char *)r - (char *)data; 182998943Sluigi ndyn = (nbytes - n) / sizeof *dynrules; 183098943Sluigi 1831112189Smaxim /* if showing stats, figure out column widths ahead of time */ 1832112189Smaxim bcwidth = pcwidth = 0; 1833117469Sluigi if (show_counters) { 1834117469Sluigi for (n = 0, r = data; n < nstat; n++, r = NEXT(r)) { 1835170923Smaxim /* skip rules from another set */ 1836187764Sluigi if (co.use_set && r->set != co.use_set - 1) 1837170923Smaxim continue; 1838170923Smaxim 1839112189Smaxim /* packet counter */ 1840115793Sticso width = snprintf(NULL, 0, "%llu", 1841115793Sticso align_uint64(&r->pcnt)); 1842112189Smaxim if (width > pcwidth) 1843112189Smaxim pcwidth = width; 1844112189Smaxim 1845112189Smaxim /* byte counter */ 1846115793Sticso width = snprintf(NULL, 0, "%llu", 1847115793Sticso align_uint64(&r->bcnt)); 1848112189Smaxim if (width > bcwidth) 1849112189Smaxim bcwidth = width; 1850112189Smaxim } 1851112189Smaxim } 1852187764Sluigi if (co.do_dynamic && ndyn) { 1853112189Smaxim for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1854187764Sluigi if (co.use_set) { 1855170923Smaxim /* skip rules from another set */ 1856171989Smaxim bcopy((char *)&d->rule + sizeof(uint16_t), 1857170923Smaxim &set, sizeof(uint8_t)); 1858187764Sluigi if (set != co.use_set - 1) 1859170923Smaxim continue; 1860170923Smaxim } 1861115793Sticso width = snprintf(NULL, 0, "%llu", 1862115793Sticso align_uint64(&d->pcnt)); 1863112189Smaxim if (width > pcwidth) 1864112189Smaxim pcwidth = width; 1865112189Smaxim 1866115793Sticso width = snprintf(NULL, 0, "%llu", 1867115793Sticso align_uint64(&d->bcnt)); 1868112189Smaxim if (width > bcwidth) 1869112189Smaxim bcwidth = width; 1870112189Smaxim } 1871112189Smaxim } 187298943Sluigi /* if no rule numbers were specified, list all rules */ 187398943Sluigi if (ac == 0) { 1874170923Smaxim for (n = 0, r = data; n < nstat; n++, r = NEXT(r)) { 1875187764Sluigi if (co.use_set && r->set != co.use_set - 1) 1876170923Smaxim continue; 1877112189Smaxim show_ipfw(r, pcwidth, bcwidth); 1878170923Smaxim } 187998943Sluigi 1880187764Sluigi if (co.do_dynamic && ndyn) { 188198943Sluigi printf("## Dynamic rules (%d):\n", ndyn); 1882170923Smaxim for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1883187764Sluigi if (co.use_set) { 1884171989Smaxim bcopy((char *)&d->rule + sizeof(uint16_t), 1885170923Smaxim &set, sizeof(uint8_t)); 1886187764Sluigi if (set != co.use_set - 1) 1887170923Smaxim continue; 1888170923Smaxim } 1889112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 189098943Sluigi } 1891170923Smaxim } 189298943Sluigi goto done; 189398943Sluigi } 189498943Sluigi 189598943Sluigi /* display specific rules requested on command line */ 189698943Sluigi 189798943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 189898943Sluigi /* convert command line rule # */ 1899117469Sluigi last = rnum = strtoul(*lav++, &endptr, 10); 1900117469Sluigi if (*endptr == '-') 1901117469Sluigi last = strtoul(endptr+1, &endptr, 10); 190298943Sluigi if (*endptr) { 190398943Sluigi exitval = EX_USAGE; 190498943Sluigi warnx("invalid rule number: %s", *(lav - 1)); 190598943Sluigi continue; 190698943Sluigi } 1907117469Sluigi for (n = seen = 0, r = data; n < nstat; n++, r = NEXT(r) ) { 1908117469Sluigi if (r->rulenum > last) 190998943Sluigi break; 1910187764Sluigi if (co.use_set && r->set != co.use_set - 1) 1911170923Smaxim continue; 1912117469Sluigi if (r->rulenum >= rnum && r->rulenum <= last) { 1913112189Smaxim show_ipfw(r, pcwidth, bcwidth); 191498943Sluigi seen = 1; 191598943Sluigi } 191698943Sluigi } 191798943Sluigi if (!seen) { 191898943Sluigi /* give precedence to other error(s) */ 191998943Sluigi if (exitval == EX_OK) 192098943Sluigi exitval = EX_UNAVAILABLE; 192198943Sluigi warnx("rule %lu does not exist", rnum); 192298943Sluigi } 192398943Sluigi } 192498943Sluigi 1925187764Sluigi if (co.do_dynamic && ndyn) { 192698943Sluigi printf("## Dynamic rules:\n"); 192798943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 1928145246Sbrooks last = rnum = strtoul(*lav++, &endptr, 10); 1929117469Sluigi if (*endptr == '-') 1930117469Sluigi last = strtoul(endptr+1, &endptr, 10); 193198943Sluigi if (*endptr) 193298943Sluigi /* already warned */ 193398943Sluigi continue; 193498943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1935115793Sticso uint16_t rulenum; 1936115793Sticso 1937115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 1938115793Sticso if (rulenum > rnum) 193998943Sluigi break; 1940187764Sluigi if (co.use_set) { 1941171989Smaxim bcopy((char *)&d->rule + sizeof(uint16_t), 1942170923Smaxim &set, sizeof(uint8_t)); 1943187764Sluigi if (set != co.use_set - 1) 1944170923Smaxim continue; 1945170923Smaxim } 1946117469Sluigi if (r->rulenum >= rnum && r->rulenum <= last) 1947112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 194898943Sluigi } 194998943Sluigi } 195098943Sluigi } 195198943Sluigi 195298943Sluigi ac = 0; 195398943Sluigi 195498943Sluigidone: 195598943Sluigi free(data); 195698943Sluigi 195798943Sluigi if (exitval != EX_OK) 195898943Sluigi exit(exitval); 1959117469Sluigi#undef NEXT 196098943Sluigi} 196198943Sluigi 196298943Sluigistatic int 196398943Sluigilookup_host (char *host, struct in_addr *ipaddr) 196498943Sluigi{ 196598943Sluigi struct hostent *he; 196698943Sluigi 196798943Sluigi if (!inet_aton(host, ipaddr)) { 196898943Sluigi if ((he = gethostbyname(host)) == NULL) 196998943Sluigi return(-1); 197098943Sluigi *ipaddr = *(struct in_addr *)he->h_addr_list[0]; 197198943Sluigi } 197298943Sluigi return(0); 197398943Sluigi} 197498943Sluigi 197598943Sluigi/* 197698943Sluigi * fills the addr and mask fields in the instruction as appropriate from av. 197798943Sluigi * Update length as appropriate. 197898943Sluigi * The following formats are allowed: 197998943Sluigi * me returns O_IP_*_ME 198098943Sluigi * 1.2.3.4 single IP address 198198943Sluigi * 1.2.3.4:5.6.7.8 address:mask 198298943Sluigi * 1.2.3.4/24 address/mask 198398943Sluigi * 1.2.3.4/26{1,6,5,4,23} set of addresses in a subnet 1984117328Sluigi * We can have multiple comma-separated address/mask entries. 198598943Sluigi */ 198698943Sluigistatic void 198798943Sluigifill_ip(ipfw_insn_ip *cmd, char *av) 198898943Sluigi{ 1989117328Sluigi int len = 0; 1990117328Sluigi uint32_t *d = ((ipfw_insn_u32 *)cmd)->d; 199198943Sluigi 199298943Sluigi cmd->o.len &= ~F_LEN_MASK; /* zero len */ 199398943Sluigi 1994140271Sbrooks if (_substrcmp(av, "any") == 0) 199598943Sluigi return; 199698943Sluigi 1997140271Sbrooks if (_substrcmp(av, "me") == 0) { 199898943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn); 199998943Sluigi return; 200098943Sluigi } 200198943Sluigi 2002140271Sbrooks if (strncmp(av, "table(", 6) == 0) { 2003130281Sru char *p = strchr(av + 6, ','); 2004130281Sru 2005130281Sru if (p) 2006130281Sru *p++ = '\0'; 2007130281Sru cmd->o.opcode = O_IP_DST_LOOKUP; 2008130281Sru cmd->o.arg1 = strtoul(av + 6, NULL, 0); 2009130281Sru if (p) { 2010130281Sru cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 2011130281Sru d[0] = strtoul(p, NULL, 0); 2012130281Sru } else 2013130281Sru cmd->o.len |= F_INSN_SIZE(ipfw_insn); 2014130281Sru return; 2015130281Sru } 2016130281Sru 2017117328Sluigi while (av) { 2018117328Sluigi /* 2019117328Sluigi * After the address we can have '/' or ':' indicating a mask, 2020117328Sluigi * ',' indicating another address follows, '{' indicating a 2021117328Sluigi * set of addresses of unspecified size. 2022117328Sluigi */ 2023165851Smlaier char *t = NULL, *p = strpbrk(av, "/:,{"); 2024117328Sluigi int masklen; 2025187477Sluigi char md, nd = '\0'; 2026117328Sluigi 202798943Sluigi if (p) { 202898943Sluigi md = *p; 202998943Sluigi *p++ = '\0'; 2030165851Smlaier if ((t = strpbrk(p, ",{")) != NULL) { 2031165851Smlaier nd = *t; 2032165851Smlaier *t = '\0'; 2033165851Smlaier } 2034117328Sluigi } else 2035117328Sluigi md = '\0'; 203698943Sluigi 2037117328Sluigi if (lookup_host(av, (struct in_addr *)&d[0]) != 0) 203898943Sluigi errx(EX_NOHOST, "hostname ``%s'' unknown", av); 203998943Sluigi switch (md) { 204098943Sluigi case ':': 2041117328Sluigi if (!inet_aton(p, (struct in_addr *)&d[1])) 204298943Sluigi errx(EX_DATAERR, "bad netmask ``%s''", p); 204398943Sluigi break; 204498943Sluigi case '/': 2045117328Sluigi masklen = atoi(p); 2046117328Sluigi if (masklen == 0) 2047117328Sluigi d[1] = htonl(0); /* mask */ 2048117328Sluigi else if (masklen > 32) 204998943Sluigi errx(EX_DATAERR, "bad width ``%s''", p); 205098943Sluigi else 2051117328Sluigi d[1] = htonl(~0 << (32 - masklen)); 205298943Sluigi break; 2053117328Sluigi case '{': /* no mask, assume /24 and put back the '{' */ 2054117328Sluigi d[1] = htonl(~0 << (32 - 24)); 2055117328Sluigi *(--p) = md; 2056117328Sluigi break; 2057117328Sluigi 2058117328Sluigi case ',': /* single address plus continuation */ 2059117328Sluigi *(--p) = md; 2060117328Sluigi /* FALLTHROUGH */ 2061117328Sluigi case 0: /* initialization value */ 206298943Sluigi default: 2063117328Sluigi d[1] = htonl(~0); /* force /32 */ 206498943Sluigi break; 206598943Sluigi } 2066117328Sluigi d[0] &= d[1]; /* mask base address with mask */ 2067165851Smlaier if (t) 2068165851Smlaier *t = nd; 2069117328Sluigi /* find next separator */ 207098943Sluigi if (p) 2071117328Sluigi p = strpbrk(p, ",{"); 2072117328Sluigi if (p && *p == '{') { 2073117328Sluigi /* 2074117328Sluigi * We have a set of addresses. They are stored as follows: 2075117328Sluigi * arg1 is the set size (powers of 2, 2..256) 2076117328Sluigi * addr is the base address IN HOST FORMAT 2077117328Sluigi * mask.. is an array of arg1 bits (rounded up to 2078117328Sluigi * the next multiple of 32) with bits set 2079117328Sluigi * for each host in the map. 2080117328Sluigi */ 2081117328Sluigi uint32_t *map = (uint32_t *)&cmd->mask; 208298943Sluigi int low, high; 2083117577Sluigi int i = contigmask((uint8_t *)&(d[1]), 32); 208498943Sluigi 2085117328Sluigi if (len > 0) 2086117328Sluigi errx(EX_DATAERR, "address set cannot be in a list"); 2087117328Sluigi if (i < 24 || i > 31) 2088117328Sluigi errx(EX_DATAERR, "invalid set with mask %d\n", i); 2089117328Sluigi cmd->o.arg1 = 1<<(32-i); /* map length */ 2090117328Sluigi d[0] = ntohl(d[0]); /* base addr in host format */ 209198943Sluigi cmd->o.opcode = O_IP_DST_SET; /* default */ 209298943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32) + (cmd->o.arg1+31)/32; 2093101117Sluigi for (i = 0; i < (cmd->o.arg1+31)/32 ; i++) 2094117328Sluigi map[i] = 0; /* clear map */ 209598943Sluigi 2096117328Sluigi av = p + 1; 2097117328Sluigi low = d[0] & 0xff; 209898943Sluigi high = low + cmd->o.arg1 - 1; 2099117328Sluigi /* 2100117328Sluigi * Here, i stores the previous value when we specify a range 2101117328Sluigi * of addresses within a mask, e.g. 45-63. i = -1 means we 2102117328Sluigi * have no previous value. 2103117328Sluigi */ 2104116716Sluigi i = -1; /* previous value in a range */ 210598943Sluigi while (isdigit(*av)) { 210698943Sluigi char *s; 2107117328Sluigi int a = strtol(av, &s, 0); 210898943Sluigi 2109117328Sluigi if (s == av) { /* no parameter */ 2110117328Sluigi if (*av != '}') 2111117328Sluigi errx(EX_DATAERR, "set not closed\n"); 2112117328Sluigi if (i != -1) 2113117328Sluigi errx(EX_DATAERR, "incomplete range %d-", i); 2114117328Sluigi break; 2115117328Sluigi } 2116117328Sluigi if (a < low || a > high) 2117117328Sluigi errx(EX_DATAERR, "addr %d out of range [%d-%d]\n", 211898943Sluigi a, low, high); 211998943Sluigi a -= low; 2120116716Sluigi if (i == -1) /* no previous in range */ 2121116716Sluigi i = a; 2122116716Sluigi else { /* check that range is valid */ 2123116716Sluigi if (i > a) 2124116716Sluigi errx(EX_DATAERR, "invalid range %d-%d", 2125116716Sluigi i+low, a+low); 2126116716Sluigi if (*s == '-') 2127116716Sluigi errx(EX_DATAERR, "double '-' in range"); 2128116716Sluigi } 2129116716Sluigi for (; i <= a; i++) 2130117328Sluigi map[i/32] |= 1<<(i & 31); 2131116716Sluigi i = -1; 2132116716Sluigi if (*s == '-') 2133116716Sluigi i = a; 2134117328Sluigi else if (*s == '}') 2135116716Sluigi break; 213698943Sluigi av = s+1; 213798943Sluigi } 213898943Sluigi return; 213998943Sluigi } 2140117328Sluigi av = p; 2141117328Sluigi if (av) /* then *av must be a ',' */ 2142117328Sluigi av++; 214398943Sluigi 2144117328Sluigi /* Check this entry */ 2145117328Sluigi if (d[1] == 0) { /* "any", specified as x.x.x.x/0 */ 2146117328Sluigi /* 2147117328Sluigi * 'any' turns the entire list into a NOP. 2148117328Sluigi * 'not any' never matches, so it is removed from the 2149117328Sluigi * list unless it is the only item, in which case we 2150117328Sluigi * report an error. 2151117328Sluigi */ 2152117328Sluigi if (cmd->o.len & F_NOT) { /* "not any" never matches */ 2153117328Sluigi if (av == NULL && len == 0) /* only this entry */ 2154117328Sluigi errx(EX_DATAERR, "not any never matches"); 2155117328Sluigi } 2156117328Sluigi /* else do nothing and skip this entry */ 2157128067Smaxim return; 2158117328Sluigi } 2159117328Sluigi /* A single IP can be stored in an optimized format */ 2160204591Sluigi if (d[1] == (uint32_t)~0 && av == NULL && len == 0) { 216198943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 2162117328Sluigi return; 2163117328Sluigi } 2164117328Sluigi len += 2; /* two words... */ 2165117328Sluigi d += 2; 2166117328Sluigi } /* end while */ 2167162363Sjhay if (len + 1 > F_LEN_MASK) 2168162363Sjhay errx(EX_DATAERR, "address list too long"); 2169117328Sluigi cmd->o.len |= len+1; 217098943Sluigi} 217198943Sluigi 217298943Sluigi 2173145246Sbrooks/* n2mask sets n bits of the mask */ 2174187769Sluigivoid 2175145246Sbrooksn2mask(struct in6_addr *mask, int n) 2176145246Sbrooks{ 2177145246Sbrooks static int minimask[9] = 2178145246Sbrooks { 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff }; 2179145246Sbrooks u_char *p; 2180145246Sbrooks 2181145246Sbrooks memset(mask, 0, sizeof(struct in6_addr)); 2182145246Sbrooks p = (u_char *) mask; 2183145246Sbrooks for (; n > 0; p++, n -= 8) { 2184145246Sbrooks if (n >= 8) 2185145246Sbrooks *p = 0xff; 2186145246Sbrooks else 2187145246Sbrooks *p = minimask[n]; 2188145246Sbrooks } 2189145246Sbrooks return; 2190145246Sbrooks} 2191145246Sbrooks 2192145246Sbrooks 219398943Sluigi/* 219498943Sluigi * helper function to process a set of flags and set bits in the 219598943Sluigi * appropriate masks. 219698943Sluigi */ 219798943Sluigistatic void 219898943Sluigifill_flags(ipfw_insn *cmd, enum ipfw_opcodes opcode, 219998943Sluigi struct _s_x *flags, char *p) 220098943Sluigi{ 2201117328Sluigi uint8_t set=0, clear=0; 220298943Sluigi 220398943Sluigi while (p && *p) { 220498943Sluigi char *q; /* points to the separator */ 220598943Sluigi int val; 2206117328Sluigi uint8_t *which; /* mask we are working on */ 220798943Sluigi 220898943Sluigi if (*p == '!') { 220998943Sluigi p++; 221098943Sluigi which = &clear; 221198943Sluigi } else 221298943Sluigi which = &set; 221398943Sluigi q = strchr(p, ','); 221498943Sluigi if (q) 221598943Sluigi *q++ = '\0'; 221698943Sluigi val = match_token(flags, p); 221798943Sluigi if (val <= 0) 221898943Sluigi errx(EX_DATAERR, "invalid flag %s", p); 2219117328Sluigi *which |= (uint8_t)val; 222098943Sluigi p = q; 222198943Sluigi } 222298943Sluigi cmd->opcode = opcode; 222398943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | 1; 222498943Sluigi cmd->arg1 = (set & 0xff) | ( (clear & 0xff) << 8); 222598943Sluigi} 222698943Sluigi 222798943Sluigi 2228187767Sluigivoid 2229204591Sluigiipfw_delete(char *av[]) 223098943Sluigi{ 2231117328Sluigi uint32_t rulenum; 223298943Sluigi int i; 223398943Sluigi int exitval = EX_OK; 2234101628Sluigi int do_set = 0; 223598943Sluigi 2236204591Sluigi av++; 2237130013Scsjp NEED1("missing rule specification"); 2238204591Sluigi if ( *av && _substrcmp(*av, "set") == 0) { 2239170923Smaxim /* Do not allow using the following syntax: 2240170923Smaxim * ipfw set N delete set M 2241170923Smaxim */ 2242187764Sluigi if (co.use_set) 2243170923Smaxim errx(EX_DATAERR, "invalid syntax"); 2244101978Sluigi do_set = 1; /* delete set */ 2245204591Sluigi av++; 2246101978Sluigi } 224798943Sluigi 224898943Sluigi /* Rule number */ 2249204591Sluigi while (*av && isdigit(**av)) { 2250204591Sluigi i = atoi(*av); av++; 2251187764Sluigi if (co.do_nat) { 2252165648Spiso exitval = do_cmd(IP_FW_NAT_DEL, &i, sizeof i); 2253165648Spiso if (exitval) { 2254165648Spiso exitval = EX_UNAVAILABLE; 2255165648Spiso warn("rule %u not available", i); 2256165648Spiso } 2257187764Sluigi } else if (co.do_pipe) { 2258187769Sluigi exitval = ipfw_delete_pipe(co.do_pipe, i); 225998943Sluigi } else { 2260187764Sluigi if (co.use_set) 2261170923Smaxim rulenum = (i & 0xffff) | (5 << 24) | 2262187764Sluigi ((co.use_set - 1) << 16); 2263170923Smaxim else 2264101978Sluigi rulenum = (i & 0xffff) | (do_set << 24); 2265117328Sluigi i = do_cmd(IP_FW_DEL, &rulenum, sizeof rulenum); 226698943Sluigi if (i) { 226798943Sluigi exitval = EX_UNAVAILABLE; 226898943Sluigi warn("rule %u: setsockopt(IP_FW_DEL)", 226998943Sluigi rulenum); 227098943Sluigi } 227198943Sluigi } 227298943Sluigi } 227398943Sluigi if (exitval != EX_OK) 227498943Sluigi exit(exitval); 227598943Sluigi} 227698943Sluigi 227798943Sluigi 227898943Sluigi/* 227998943Sluigi * fill the interface structure. We do not check the name as we can 228098943Sluigi * create interfaces dynamically, so checking them at insert time 228198943Sluigi * makes relatively little sense. 2282121816Sbrooks * Interface names containing '*', '?', or '[' are assumed to be shell 2283121816Sbrooks * patterns which match interfaces. 228498943Sluigi */ 228598943Sluigistatic void 228698943Sluigifill_iface(ipfw_insn_if *cmd, char *arg) 228798943Sluigi{ 228898943Sluigi cmd->name[0] = '\0'; 228998943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_if); 229098943Sluigi 229198943Sluigi /* Parse the interface or address */ 2292140271Sbrooks if (strcmp(arg, "any") == 0) 229398943Sluigi cmd->o.len = 0; /* effectively ignore this command */ 229498943Sluigi else if (!isdigit(*arg)) { 2295121816Sbrooks strlcpy(cmd->name, arg, sizeof(cmd->name)); 2296121816Sbrooks cmd->p.glob = strpbrk(arg, "*?[") != NULL ? 1 : 0; 229798943Sluigi } else if (!inet_aton(arg, &cmd->p.ip)) 229898943Sluigi errx(EX_DATAERR, "bad ip address ``%s''", arg); 229998943Sluigi} 230098943Sluigi 230198943Sluigistatic void 2302169424Smaximget_mac_addr_mask(const char *p, uint8_t *addr, uint8_t *mask) 230398943Sluigi{ 2304204591Sluigi int i; 2305204591Sluigi size_t l; 2306169424Smaxim char *ap, *ptr, *optr; 2307169424Smaxim struct ether_addr *mac; 2308169424Smaxim const char *macset = "0123456789abcdefABCDEF:"; 230998943Sluigi 2310169424Smaxim if (strcmp(p, "any") == 0) { 2311169424Smaxim for (i = 0; i < ETHER_ADDR_LEN; i++) 2312169424Smaxim addr[i] = mask[i] = 0; 231398943Sluigi return; 2314169424Smaxim } 231598943Sluigi 2316169424Smaxim optr = ptr = strdup(p); 2317169424Smaxim if ((ap = strsep(&ptr, "&/")) != NULL && *ap != 0) { 2318169424Smaxim l = strlen(ap); 2319169424Smaxim if (strspn(ap, macset) != l || (mac = ether_aton(ap)) == NULL) 2320169424Smaxim errx(EX_DATAERR, "Incorrect MAC address"); 2321169424Smaxim bcopy(mac, addr, ETHER_ADDR_LEN); 2322169424Smaxim } else 2323169424Smaxim errx(EX_DATAERR, "Incorrect MAC address"); 2324169424Smaxim 2325169424Smaxim if (ptr != NULL) { /* we have mask? */ 2326169424Smaxim if (p[ptr - optr - 1] == '/') { /* mask len */ 2327204591Sluigi long ml = strtol(ptr, &ap, 10); 2328204591Sluigi if (*ap != 0 || ml > ETHER_ADDR_LEN * 8 || ml < 0) 2329169424Smaxim errx(EX_DATAERR, "Incorrect mask length"); 2330204591Sluigi for (i = 0; ml > 0 && i < ETHER_ADDR_LEN; ml -= 8, i++) 2331204591Sluigi mask[i] = (ml >= 8) ? 0xff: (~0) << (8 - ml); 2332169424Smaxim } else { /* mask */ 2333169424Smaxim l = strlen(ptr); 2334169424Smaxim if (strspn(ptr, macset) != l || 2335169424Smaxim (mac = ether_aton(ptr)) == NULL) 2336169424Smaxim errx(EX_DATAERR, "Incorrect mask"); 2337169424Smaxim bcopy(mac, mask, ETHER_ADDR_LEN); 233898943Sluigi } 2339169424Smaxim } else { /* default mask: ff:ff:ff:ff:ff:ff */ 2340169424Smaxim for (i = 0; i < ETHER_ADDR_LEN; i++) 234198943Sluigi mask[i] = 0xff; 234298943Sluigi } 2343169424Smaxim for (i = 0; i < ETHER_ADDR_LEN; i++) 234498943Sluigi addr[i] &= mask[i]; 2345169424Smaxim 2346169424Smaxim free(optr); 234798943Sluigi} 234898943Sluigi 234998943Sluigi/* 235098943Sluigi * helper function, updates the pointer to cmd with the length 235198943Sluigi * of the current command, and also cleans up the first word of 235298943Sluigi * the new command in case it has been clobbered before. 235398943Sluigi */ 235498943Sluigistatic ipfw_insn * 235598943Sluiginext_cmd(ipfw_insn *cmd) 235698943Sluigi{ 235798943Sluigi cmd += F_LEN(cmd); 235898943Sluigi bzero(cmd, sizeof(*cmd)); 235998943Sluigi return cmd; 236098943Sluigi} 236198943Sluigi 236298943Sluigi/* 2363117469Sluigi * Takes arguments and copies them into a comment 2364117469Sluigi */ 2365117469Sluigistatic void 2366204591Sluigifill_comment(ipfw_insn *cmd, char **av) 2367117469Sluigi{ 2368117469Sluigi int i, l; 2369117469Sluigi char *p = (char *)(cmd + 1); 2370117577Sluigi 2371117469Sluigi cmd->opcode = O_NOP; 2372117469Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)); 2373117469Sluigi 2374117469Sluigi /* Compute length of comment string. */ 2375204591Sluigi for (i = 0, l = 0; av[i] != NULL; i++) 2376117469Sluigi l += strlen(av[i]) + 1; 2377117469Sluigi if (l == 0) 2378117469Sluigi return; 2379117469Sluigi if (l > 84) 2380117469Sluigi errx(EX_DATAERR, 2381117469Sluigi "comment too long (max 80 chars)"); 2382117469Sluigi l = 1 + (l+3)/4; 2383117469Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | l; 2384204591Sluigi for (i = 0; av[i] != NULL; i++) { 2385117469Sluigi strcpy(p, av[i]); 2386117469Sluigi p += strlen(av[i]); 2387117469Sluigi *p++ = ' '; 2388117469Sluigi } 2389117469Sluigi *(--p) = '\0'; 2390117469Sluigi} 2391117577Sluigi 2392117469Sluigi/* 239398943Sluigi * A function to fill simple commands of size 1. 239498943Sluigi * Existing flags are preserved. 239598943Sluigi */ 239698943Sluigistatic void 2397117328Sluigifill_cmd(ipfw_insn *cmd, enum ipfw_opcodes opcode, int flags, uint16_t arg) 239898943Sluigi{ 239998943Sluigi cmd->opcode = opcode; 240098943Sluigi cmd->len = ((cmd->len | flags) & (F_NOT | F_OR)) | 1; 240198943Sluigi cmd->arg1 = arg; 240298943Sluigi} 240398943Sluigi 240498943Sluigi/* 240598943Sluigi * Fetch and add the MAC address and type, with masks. This generates one or 240698943Sluigi * two microinstructions, and returns the pointer to the last one. 240798943Sluigi */ 240898943Sluigistatic ipfw_insn * 2409204591Sluigiadd_mac(ipfw_insn *cmd, char *av[]) 241098943Sluigi{ 2411102087Sluigi ipfw_insn_mac *mac; 241298943Sluigi 2413204591Sluigi if ( ( av[0] == NULL ) || ( av[1] == NULL ) ) 2414102098Sluigi errx(EX_DATAERR, "MAC dst src"); 241598943Sluigi 241698943Sluigi cmd->opcode = O_MACADDR2; 241798943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | F_INSN_SIZE(ipfw_insn_mac); 241898943Sluigi 241998943Sluigi mac = (ipfw_insn_mac *)cmd; 2420101978Sluigi get_mac_addr_mask(av[0], mac->addr, mac->mask); /* dst */ 2421169424Smaxim get_mac_addr_mask(av[1], &(mac->addr[ETHER_ADDR_LEN]), 2422169424Smaxim &(mac->mask[ETHER_ADDR_LEN])); /* src */ 2423102087Sluigi return cmd; 2424102087Sluigi} 242598943Sluigi 2426102087Sluigistatic ipfw_insn * 2427204591Sluigiadd_mactype(ipfw_insn *cmd, char *av) 2428102087Sluigi{ 2429204591Sluigi if (!av) 2430102087Sluigi errx(EX_DATAERR, "missing MAC type"); 2431102087Sluigi if (strcmp(av, "any") != 0) { /* we have a non-null type */ 2432102087Sluigi fill_newports((ipfw_insn_u16 *)cmd, av, IPPROTO_ETHERTYPE); 243398943Sluigi cmd->opcode = O_MAC_TYPE; 2434102087Sluigi return cmd; 2435102087Sluigi } else 2436102087Sluigi return NULL; 2437102087Sluigi} 243898943Sluigi 2439102087Sluigistatic ipfw_insn * 2440152923Sumeadd_proto0(ipfw_insn *cmd, char *av, u_char *protop) 2441102087Sluigi{ 2442102087Sluigi struct protoent *pe; 2443152923Sume char *ep; 2444152923Sume int proto; 2445102087Sluigi 2446156315Sume proto = strtol(av, &ep, 10); 2447156315Sume if (*ep != '\0' || proto <= 0) { 2448152923Sume if ((pe = getprotobyname(av)) == NULL) 2449152923Sume return NULL; 2450152923Sume proto = pe->p_proto; 2451152923Sume } 2452145246Sbrooks 2453152923Sume fill_cmd(cmd, O_PROTO, 0, proto); 2454152923Sume *protop = proto; 2455152923Sume return cmd; 2456152923Sume} 2457152923Sume 2458152923Sumestatic ipfw_insn * 2459152923Sumeadd_proto(ipfw_insn *cmd, char *av, u_char *protop) 2460152923Sume{ 2461152923Sume u_char proto = IPPROTO_IP; 2462152923Sume 2463156315Sume if (_substrcmp(av, "all") == 0 || strcmp(av, "ip") == 0) 2464146894Smlaier ; /* do not set O_IP4 nor O_IP6 */ 2465152923Sume else if (strcmp(av, "ip4") == 0) 2466152923Sume /* explicit "just IPv4" rule */ 2467152923Sume fill_cmd(cmd, O_IP4, 0, 0); 2468152923Sume else if (strcmp(av, "ip6") == 0) { 2469152923Sume /* explicit "just IPv6" rule */ 2470152923Sume proto = IPPROTO_IPV6; 2471152923Sume fill_cmd(cmd, O_IP6, 0, 0); 2472152923Sume } else 2473152923Sume return add_proto0(cmd, av, protop); 2474152923Sume 2475152923Sume *protop = proto; 2476152923Sume return cmd; 2477152923Sume} 2478152923Sume 2479152923Sumestatic ipfw_insn * 2480152923Sumeadd_proto_compat(ipfw_insn *cmd, char *av, u_char *protop) 2481152923Sume{ 2482152923Sume u_char proto = IPPROTO_IP; 2483152923Sume 2484152923Sume if (_substrcmp(av, "all") == 0 || strcmp(av, "ip") == 0) 2485152923Sume ; /* do not set O_IP4 nor O_IP6 */ 2486146894Smlaier else if (strcmp(av, "ipv4") == 0 || strcmp(av, "ip4") == 0) 2487146894Smlaier /* explicit "just IPv4" rule */ 2488146894Smlaier fill_cmd(cmd, O_IP4, 0, 0); 2489146894Smlaier else if (strcmp(av, "ipv6") == 0 || strcmp(av, "ip6") == 0) { 2490146894Smlaier /* explicit "just IPv6" rule */ 2491152923Sume proto = IPPROTO_IPV6; 2492146894Smlaier fill_cmd(cmd, O_IP6, 0, 0); 2493152923Sume } else 2494152923Sume return add_proto0(cmd, av, protop); 2495145246Sbrooks 2496152923Sume *protop = proto; 249798943Sluigi return cmd; 249898943Sluigi} 249998943Sluigi 2500102087Sluigistatic ipfw_insn * 2501102087Sluigiadd_srcip(ipfw_insn *cmd, char *av) 2502102087Sluigi{ 2503102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2504102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2505102087Sluigi cmd->opcode = O_IP_SRC_SET; 2506130281Sru else if (cmd->opcode == O_IP_DST_LOOKUP) /* table */ 2507130281Sru cmd->opcode = O_IP_SRC_LOOKUP; 2508102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2509102087Sluigi cmd->opcode = O_IP_SRC_ME; 2510102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2511102087Sluigi cmd->opcode = O_IP_SRC; 2512117328Sluigi else /* addr/mask */ 2513102087Sluigi cmd->opcode = O_IP_SRC_MASK; 2514102087Sluigi return cmd; 2515102087Sluigi} 2516102087Sluigi 2517102087Sluigistatic ipfw_insn * 2518102087Sluigiadd_dstip(ipfw_insn *cmd, char *av) 2519102087Sluigi{ 2520102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2521102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2522102087Sluigi ; 2523130281Sru else if (cmd->opcode == O_IP_DST_LOOKUP) /* table */ 2524130281Sru ; 2525102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2526102087Sluigi cmd->opcode = O_IP_DST_ME; 2527102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2528102087Sluigi cmd->opcode = O_IP_DST; 2529117328Sluigi else /* addr/mask */ 2530102087Sluigi cmd->opcode = O_IP_DST_MASK; 2531102087Sluigi return cmd; 2532102087Sluigi} 2533102087Sluigi 2534102087Sluigistatic ipfw_insn * 2535102087Sluigiadd_ports(ipfw_insn *cmd, char *av, u_char proto, int opcode) 2536102087Sluigi{ 2537204591Sluigi /* XXX "any" is trapped before. Perhaps "to" */ 2538140271Sbrooks if (_substrcmp(av, "any") == 0) { 2539102087Sluigi return NULL; 2540102087Sluigi } else if (fill_newports((ipfw_insn_u16 *)cmd, av, proto)) { 2541102087Sluigi /* XXX todo: check that we have a protocol with ports */ 2542102087Sluigi cmd->opcode = opcode; 2543102087Sluigi return cmd; 2544102087Sluigi } 2545102087Sluigi return NULL; 2546102087Sluigi} 2547102087Sluigi 2548145246Sbrooksstatic ipfw_insn * 2549145246Sbrooksadd_src(ipfw_insn *cmd, char *av, u_char proto) 2550145246Sbrooks{ 2551145246Sbrooks struct in6_addr a; 2552158553Smlaier char *host, *ch; 2553158553Smlaier ipfw_insn *ret = NULL; 2554145246Sbrooks 2555158553Smlaier if ((host = strdup(av)) == NULL) 2556158553Smlaier return NULL; 2557158553Smlaier if ((ch = strrchr(host, '/')) != NULL) 2558158553Smlaier *ch = '\0'; 2559158553Smlaier 2560145246Sbrooks if (proto == IPPROTO_IPV6 || strcmp(av, "me6") == 0 || 2561204591Sluigi inet_pton(AF_INET6, host, &a) == 1) 2562158553Smlaier ret = add_srcip6(cmd, av); 2563145246Sbrooks /* XXX: should check for IPv4, not !IPv6 */ 2564161483Sdwmalone if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 || 2565204591Sluigi inet_pton(AF_INET6, host, &a) != 1)) 2566158553Smlaier ret = add_srcip(cmd, av); 2567161483Sdwmalone if (ret == NULL && strcmp(av, "any") != 0) 2568158553Smlaier ret = cmd; 2569145246Sbrooks 2570158553Smlaier free(host); 2571158553Smlaier return ret; 2572145246Sbrooks} 2573145246Sbrooks 2574145246Sbrooksstatic ipfw_insn * 2575145246Sbrooksadd_dst(ipfw_insn *cmd, char *av, u_char proto) 2576145246Sbrooks{ 2577145246Sbrooks struct in6_addr a; 2578158553Smlaier char *host, *ch; 2579158553Smlaier ipfw_insn *ret = NULL; 2580145246Sbrooks 2581158553Smlaier if ((host = strdup(av)) == NULL) 2582158553Smlaier return NULL; 2583158553Smlaier if ((ch = strrchr(host, '/')) != NULL) 2584158553Smlaier *ch = '\0'; 2585158553Smlaier 2586145246Sbrooks if (proto == IPPROTO_IPV6 || strcmp(av, "me6") == 0 || 2587204591Sluigi inet_pton(AF_INET6, host, &a) == 1) 2588158553Smlaier ret = add_dstip6(cmd, av); 2589145246Sbrooks /* XXX: should check for IPv4, not !IPv6 */ 2590161483Sdwmalone if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 || 2591204591Sluigi inet_pton(AF_INET6, host, &a) != 1)) 2592158553Smlaier ret = add_dstip(cmd, av); 2593161483Sdwmalone if (ret == NULL && strcmp(av, "any") != 0) 2594158553Smlaier ret = cmd; 2595145246Sbrooks 2596158553Smlaier free(host); 2597158553Smlaier return ret; 2598145246Sbrooks} 2599145246Sbrooks 260098943Sluigi/* 260198943Sluigi * Parse arguments and assemble the microinstructions which make up a rule. 260298943Sluigi * Rules are added into the 'rulebuf' and then copied in the correct order 260398943Sluigi * into the actual rule. 260498943Sluigi * 2605136071Sgreen * The syntax for a rule starts with the action, followed by 2606136071Sgreen * optional action parameters, and the various match patterns. 2607108533Sschweikh * In the assembled microcode, the first opcode must be an O_PROBE_STATE 260898943Sluigi * (generated if the rule includes a keep-state option), then the 2609136071Sgreen * various match patterns, log/altq actions, and the actual action. 2610106505Smaxim * 261198943Sluigi */ 2612187767Sluigivoid 2613204591Sluigiipfw_add(char *av[]) 261498943Sluigi{ 261598943Sluigi /* 261698943Sluigi * rules are added into the 'rulebuf' and then copied in 261798943Sluigi * the correct order into the actual rule. 261898943Sluigi * Some things that need to go out of order (prob, action etc.) 261998943Sluigi * go into actbuf[]. 262098943Sluigi */ 2621117328Sluigi static uint32_t rulebuf[255], actbuf[255], cmdbuf[255]; 262298943Sluigi 2623117469Sluigi ipfw_insn *src, *dst, *cmd, *action, *prev=NULL; 2624102087Sluigi ipfw_insn *first_cmd; /* first match pattern */ 262598943Sluigi 262698943Sluigi struct ip_fw *rule; 262798943Sluigi 262898943Sluigi /* 262998943Sluigi * various flags used to record that we entered some fields. 263098943Sluigi */ 2631101116Sluigi ipfw_insn *have_state = NULL; /* check-state or keep-state */ 2632158879Soleg ipfw_insn *have_log = NULL, *have_altq = NULL, *have_tag = NULL; 2633134475Smaxim size_t len; 263498943Sluigi 263598943Sluigi int i; 263698943Sluigi 263798943Sluigi int open_par = 0; /* open parenthesis ( */ 263898943Sluigi 263998943Sluigi /* proto is here because it is used to fetch ports */ 264098943Sluigi u_char proto = IPPROTO_IP; /* default protocol */ 264198943Sluigi 2642107289Sluigi double match_prob = 1; /* match probability, default is always match */ 2643107289Sluigi 264498943Sluigi bzero(actbuf, sizeof(actbuf)); /* actions go here */ 264598943Sluigi bzero(cmdbuf, sizeof(cmdbuf)); 264698943Sluigi bzero(rulebuf, sizeof(rulebuf)); 264798943Sluigi 264898943Sluigi rule = (struct ip_fw *)rulebuf; 264998943Sluigi cmd = (ipfw_insn *)cmdbuf; 265098943Sluigi action = (ipfw_insn *)actbuf; 265198943Sluigi 2652204591Sluigi av++; 265398943Sluigi 265498943Sluigi /* [rule N] -- Rule number optional */ 2655204591Sluigi if (av[0] && isdigit(**av)) { 265698943Sluigi rule->rulenum = atoi(*av); 265798943Sluigi av++; 265898943Sluigi } 265998943Sluigi 2660117655Sluigi /* [set N] -- set number (0..RESVD_SET), optional */ 2661205631Sluigi if (av[0] && av[1] && _substrcmp(*av, "set") == 0) { 2662101628Sluigi int set = strtoul(av[1], NULL, 10); 2663117655Sluigi if (set < 0 || set > RESVD_SET) 2664101628Sluigi errx(EX_DATAERR, "illegal set %s", av[1]); 2665101628Sluigi rule->set = set; 2666204591Sluigi av += 2; 2667101628Sluigi } 2668101628Sluigi 266998943Sluigi /* [prob D] -- match probability, optional */ 2670204591Sluigi if (av[0] && av[1] && _substrcmp(*av, "prob") == 0) { 2671107289Sluigi match_prob = strtod(av[1], NULL); 267298943Sluigi 2673107289Sluigi if (match_prob <= 0 || match_prob > 1) 267498943Sluigi errx(EX_DATAERR, "illegal match prob. %s", av[1]); 2675204591Sluigi av += 2; 267698943Sluigi } 267798943Sluigi 267898943Sluigi /* action -- mandatory */ 267998943Sluigi NEED1("missing action"); 268098943Sluigi i = match_token(rule_actions, *av); 2681204591Sluigi av++; 268298943Sluigi action->len = 1; /* default */ 268398943Sluigi switch(i) { 268498943Sluigi case TOK_CHECKSTATE: 2685101116Sluigi have_state = action; 268698943Sluigi action->opcode = O_CHECK_STATE; 268798943Sluigi break; 268898943Sluigi 268998943Sluigi case TOK_ACCEPT: 269098943Sluigi action->opcode = O_ACCEPT; 269198943Sluigi break; 269298943Sluigi 269398943Sluigi case TOK_DENY: 269498943Sluigi action->opcode = O_DENY; 269599475Sluigi action->arg1 = 0; 269698943Sluigi break; 269798943Sluigi 269899475Sluigi case TOK_REJECT: 269999475Sluigi action->opcode = O_REJECT; 270099475Sluigi action->arg1 = ICMP_UNREACH_HOST; 270199475Sluigi break; 270299475Sluigi 270399475Sluigi case TOK_RESET: 270499475Sluigi action->opcode = O_REJECT; 270599475Sluigi action->arg1 = ICMP_REJECT_RST; 270699475Sluigi break; 270799475Sluigi 2708149020Sbz case TOK_RESET6: 2709149020Sbz action->opcode = O_UNREACH6; 2710149020Sbz action->arg1 = ICMP6_UNREACH_RST; 2711149020Sbz break; 2712149020Sbz 271399475Sluigi case TOK_UNREACH: 271499475Sluigi action->opcode = O_REJECT; 271599475Sluigi NEED1("missing reject code"); 271699475Sluigi fill_reject_code(&action->arg1, *av); 2717204591Sluigi av++; 271899475Sluigi break; 271999475Sluigi 2720149020Sbz case TOK_UNREACH6: 2721149020Sbz action->opcode = O_UNREACH6; 2722149020Sbz NEED1("missing unreach code"); 2723149020Sbz fill_unreach6_code(&action->arg1, *av); 2724204591Sluigi av++; 2725149020Sbz break; 2726149020Sbz 272798943Sluigi case TOK_COUNT: 272898943Sluigi action->opcode = O_COUNT; 272998943Sluigi break; 273098943Sluigi 2731176517Spiso case TOK_NAT: 2732176517Spiso action->opcode = O_NAT; 2733176517Spiso action->len = F_INSN_SIZE(ipfw_insn_nat); 2734176517Spiso goto chkarg; 2735178888Sjulian 273698943Sluigi case TOK_QUEUE: 2737153374Sglebius action->opcode = O_QUEUE; 2738153374Sglebius goto chkarg; 273998943Sluigi case TOK_PIPE: 2740153374Sglebius action->opcode = O_PIPE; 2741153374Sglebius goto chkarg; 274298943Sluigi case TOK_SKIPTO: 2743153374Sglebius action->opcode = O_SKIPTO; 2744153374Sglebius goto chkarg; 2745153374Sglebius case TOK_NETGRAPH: 2746153374Sglebius action->opcode = O_NETGRAPH; 2747153374Sglebius goto chkarg; 2748153374Sglebius case TOK_NGTEE: 2749153374Sglebius action->opcode = O_NGTEE; 2750153374Sglebius goto chkarg; 275198943Sluigi case TOK_DIVERT: 2752153374Sglebius action->opcode = O_DIVERT; 2753153374Sglebius goto chkarg; 275498943Sluigi case TOK_TEE: 2755153374Sglebius action->opcode = O_TEE; 2756153374Sglebiuschkarg: 2757204591Sluigi if (!av[0]) 2758153374Sglebius errx(EX_USAGE, "missing argument for %s", *(av - 1)); 2759153374Sglebius if (isdigit(**av)) { 2760153374Sglebius action->arg1 = strtoul(*av, NULL, 10); 2761153374Sglebius if (action->arg1 <= 0 || action->arg1 >= IP_FW_TABLEARG) 2762153374Sglebius errx(EX_DATAERR, "illegal argument for %s", 2763153374Sglebius *(av - 1)); 2764187762Sluigi } else if (_substrcmp(*av, "tablearg") == 0) { 2765153374Sglebius action->arg1 = IP_FW_TABLEARG; 2766153374Sglebius } else if (i == TOK_DIVERT || i == TOK_TEE) { 276798943Sluigi struct servent *s; 276898943Sluigi setservent(1); 276998943Sluigi s = getservbyname(av[0], "divert"); 277098943Sluigi if (s != NULL) 277198943Sluigi action->arg1 = ntohs(s->s_port); 277298943Sluigi else 277398943Sluigi errx(EX_DATAERR, "illegal divert/tee port"); 2774153374Sglebius } else 2775153374Sglebius errx(EX_DATAERR, "illegal argument for %s", *(av - 1)); 2776204591Sluigi av++; 277798943Sluigi break; 277898943Sluigi 277998943Sluigi case TOK_FORWARD: { 278098943Sluigi ipfw_insn_sa *p = (ipfw_insn_sa *)action; 278198943Sluigi char *s, *end; 278298943Sluigi 278398943Sluigi NEED1("missing forward address[:port]"); 278498943Sluigi 278598943Sluigi action->opcode = O_FORWARD_IP; 278698943Sluigi action->len = F_INSN_SIZE(ipfw_insn_sa); 278798943Sluigi 2788188005Sluigi /* 2789188005Sluigi * In the kernel we assume AF_INET and use only 2790200183Sluigi * sin_port and sin_addr. Remember to set sin_len as 2791200183Sluigi * the routing code seems to use it too. 2792188005Sluigi */ 279398943Sluigi p->sa.sin_family = AF_INET; 2794200183Sluigi p->sa.sin_len = sizeof(struct sockaddr_in); 279598943Sluigi p->sa.sin_port = 0; 279698943Sluigi /* 279798943Sluigi * locate the address-port separator (':' or ',') 279898943Sluigi */ 279998943Sluigi s = strchr(*av, ':'); 280098943Sluigi if (s == NULL) 280198943Sluigi s = strchr(*av, ','); 280298943Sluigi if (s != NULL) { 280398943Sluigi *(s++) = '\0'; 280498943Sluigi i = strtoport(s, &end, 0 /* base */, 0 /* proto */); 280598943Sluigi if (s == end) 280698943Sluigi errx(EX_DATAERR, 280798943Sluigi "illegal forwarding port ``%s''", s); 2808103241Sluigi p->sa.sin_port = (u_short)i; 280998943Sluigi } 2810161456Sjulian if (_substrcmp(*av, "tablearg") == 0) 2811161456Sjulian p->sa.sin_addr.s_addr = INADDR_ANY; 2812161456Sjulian else 2813161424Sjulian lookup_host(*av, &(p->sa.sin_addr)); 2814204591Sluigi av++; 281598943Sluigi break; 2816161424Sjulian } 2817117469Sluigi case TOK_COMMENT: 2818117469Sluigi /* pretend it is a 'count' rule followed by the comment */ 2819117469Sluigi action->opcode = O_COUNT; 2820204591Sluigi av--; /* go back... */ 2821117469Sluigi break; 2822178888Sjulian 2823178888Sjulian case TOK_SETFIB: 2824178888Sjulian { 2825178888Sjulian int numfibs; 2826178916Sjulian size_t intsize = sizeof(int); 2827178888Sjulian 2828178888Sjulian action->opcode = O_SETFIB; 2829178888Sjulian NEED1("missing fib number"); 2830178888Sjulian action->arg1 = strtoul(*av, NULL, 10); 2831178916Sjulian if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1) 2832178888Sjulian errx(EX_DATAERR, "fibs not suported.\n"); 2833178888Sjulian if (action->arg1 >= numfibs) /* Temporary */ 2834178888Sjulian errx(EX_DATAERR, "fib too large.\n"); 2835204591Sluigi av++; 2836178888Sjulian break; 2837178888Sjulian } 2838190633Spiso 2839190633Spiso case TOK_REASS: 2840190633Spiso action->opcode = O_REASS; 2841190633Spiso break; 2842165648Spiso 284398943Sluigi default: 2844102087Sluigi errx(EX_DATAERR, "invalid action %s\n", av[-1]); 284598943Sluigi } 284698943Sluigi action = next_cmd(action); 284798943Sluigi 284898943Sluigi /* 2849136071Sgreen * [altq queuename] -- altq tag, optional 285098943Sluigi * [log [logamount N]] -- log, optional 285198943Sluigi * 2852136071Sgreen * If they exist, it go first in the cmdbuf, but then it is 285398943Sluigi * skipped in the copy section to the end of the buffer. 285498943Sluigi */ 2855204591Sluigi while (av[0] != NULL && (i = match_token(rule_action_params, *av)) != -1) { 2856204591Sluigi av++; 2857136071Sgreen switch (i) { 2858136071Sgreen case TOK_LOG: 2859136071Sgreen { 2860136071Sgreen ipfw_insn_log *c = (ipfw_insn_log *)cmd; 2861136071Sgreen int l; 286298943Sluigi 2863136071Sgreen if (have_log) 2864136071Sgreen errx(EX_DATAERR, 2865136071Sgreen "log cannot be specified more than once"); 2866136071Sgreen have_log = (ipfw_insn *)c; 2867136071Sgreen cmd->len = F_INSN_SIZE(ipfw_insn_log); 2868136071Sgreen cmd->opcode = O_LOG; 2869204591Sluigi if (av[0] && _substrcmp(*av, "logamount") == 0) { 2870204591Sluigi av++; 2871136071Sgreen NEED1("logamount requires argument"); 2872136071Sgreen l = atoi(*av); 2873136071Sgreen if (l < 0) 2874136071Sgreen errx(EX_DATAERR, 2875136071Sgreen "logamount must be positive"); 2876136071Sgreen c->max_log = l; 2877204591Sluigi av++; 2878136071Sgreen } else { 2879136071Sgreen len = sizeof(c->max_log); 2880136071Sgreen if (sysctlbyname("net.inet.ip.fw.verbose_limit", 2881136071Sgreen &c->max_log, &len, NULL, 0) == -1) 2882136071Sgreen errx(1, "sysctlbyname(\"%s\")", 2883136071Sgreen "net.inet.ip.fw.verbose_limit"); 2884136071Sgreen } 2885136071Sgreen } 2886136071Sgreen break; 2887136071Sgreen 2888204591Sluigi#ifndef NO_ALTQ 2889136071Sgreen case TOK_ALTQ: 2890136071Sgreen { 2891136071Sgreen ipfw_insn_altq *a = (ipfw_insn_altq *)cmd; 2892136071Sgreen 2893136071Sgreen NEED1("missing altq queue name"); 2894136071Sgreen if (have_altq) 2895136071Sgreen errx(EX_DATAERR, 2896136071Sgreen "altq cannot be specified more than once"); 2897136071Sgreen have_altq = (ipfw_insn *)a; 2898136071Sgreen cmd->len = F_INSN_SIZE(ipfw_insn_altq); 2899136071Sgreen cmd->opcode = O_ALTQ; 2900187983Sluigi a->qid = altq_name_to_qid(*av); 2901204591Sluigi av++; 2902136071Sgreen } 2903136071Sgreen break; 2904204591Sluigi#endif 2905136071Sgreen 2906158879Soleg case TOK_TAG: 2907159636Soleg case TOK_UNTAG: { 2908159636Soleg uint16_t tag; 2909159636Soleg 2910158879Soleg if (have_tag) 2911159636Soleg errx(EX_USAGE, "tag and untag cannot be " 2912159636Soleg "specified more than once"); 2913193516Sluigi GET_UINT_ARG(tag, IPFW_ARG_MIN, IPFW_ARG_MAX, i, 2914182823Srik rule_action_params); 2915158879Soleg have_tag = cmd; 2916159636Soleg fill_cmd(cmd, O_TAG, (i == TOK_TAG) ? 0: F_NOT, tag); 2917204591Sluigi av++; 2918158879Soleg break; 2919159636Soleg } 2920158879Soleg 2921136071Sgreen default: 2922136071Sgreen abort(); 292398943Sluigi } 292498943Sluigi cmd = next_cmd(cmd); 292598943Sluigi } 292698943Sluigi 2927101116Sluigi if (have_state) /* must be a check-state, we are done */ 292898943Sluigi goto done; 292998943Sluigi 293098943Sluigi#define OR_START(target) \ 2931204591Sluigi if (av[0] && (*av[0] == '(' || *av[0] == '{')) { \ 293298943Sluigi if (open_par) \ 293398943Sluigi errx(EX_USAGE, "nested \"(\" not allowed\n"); \ 2934101641Sluigi prev = NULL; \ 293598943Sluigi open_par = 1; \ 293698943Sluigi if ( (av[0])[1] == '\0') { \ 2937204591Sluigi av++; \ 293898943Sluigi } else \ 293998943Sluigi (*av)++; \ 294098943Sluigi } \ 294198943Sluigi target: \ 294298943Sluigi 294398943Sluigi 294498943Sluigi#define CLOSE_PAR \ 294598943Sluigi if (open_par) { \ 2946204591Sluigi if (av[0] && ( \ 2947140271Sbrooks strcmp(*av, ")") == 0 || \ 2948140271Sbrooks strcmp(*av, "}") == 0)) { \ 2949101641Sluigi prev = NULL; \ 295098943Sluigi open_par = 0; \ 2951204591Sluigi av++; \ 295298943Sluigi } else \ 295398943Sluigi errx(EX_USAGE, "missing \")\"\n"); \ 295498943Sluigi } 2955106505Smaxim 295698943Sluigi#define NOT_BLOCK \ 2957204591Sluigi if (av[0] && _substrcmp(*av, "not") == 0) { \ 295898943Sluigi if (cmd->len & F_NOT) \ 295998943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); \ 296098943Sluigi cmd->len |= F_NOT; \ 2961204591Sluigi av++; \ 296298943Sluigi } 296398943Sluigi 296498943Sluigi#define OR_BLOCK(target) \ 2965204591Sluigi if (av[0] && _substrcmp(*av, "or") == 0) { \ 296698943Sluigi if (prev == NULL || open_par == 0) \ 296798943Sluigi errx(EX_DATAERR, "invalid OR block"); \ 296898943Sluigi prev->len |= F_OR; \ 2969204591Sluigi av++; \ 297098943Sluigi goto target; \ 297198943Sluigi } \ 297298943Sluigi CLOSE_PAR; 297398943Sluigi 2974102087Sluigi first_cmd = cmd; 2975102098Sluigi 2976102098Sluigi#if 0 297798943Sluigi /* 2978102087Sluigi * MAC addresses, optional. 2979102087Sluigi * If we have this, we skip the part "proto from src to dst" 2980102087Sluigi * and jump straight to the option parsing. 2981102087Sluigi */ 2982102087Sluigi NOT_BLOCK; 2983102087Sluigi NEED1("missing protocol"); 2984140271Sbrooks if (_substrcmp(*av, "MAC") == 0 || 2985140271Sbrooks _substrcmp(*av, "mac") == 0) { 2986204591Sluigi av++; /* the "MAC" keyword */ 2987204591Sluigi add_mac(cmd, av); /* exits in case of errors */ 2988102087Sluigi cmd = next_cmd(cmd); 2989204591Sluigi av += 2; /* dst-mac and src-mac */ 2990102087Sluigi NOT_BLOCK; 2991102087Sluigi NEED1("missing mac type"); 2992204591Sluigi if (add_mactype(cmd, av[0])) 2993102087Sluigi cmd = next_cmd(cmd); 2994204591Sluigi av++; /* any or mac-type */ 2995102087Sluigi goto read_options; 2996102087Sluigi } 2997102098Sluigi#endif 2998102087Sluigi 2999102087Sluigi /* 300098943Sluigi * protocol, mandatory 300198943Sluigi */ 300298943Sluigi OR_START(get_proto); 300398943Sluigi NOT_BLOCK; 300498943Sluigi NEED1("missing protocol"); 3005152923Sume if (add_proto_compat(cmd, *av, &proto)) { 3006204591Sluigi av++; 3007147105Smlaier if (F_LEN(cmd) != 0) { 3008102087Sluigi prev = cmd; 3009102087Sluigi cmd = next_cmd(cmd); 3010102087Sluigi } 3011102098Sluigi } else if (first_cmd != cmd) { 3012116438Smaxim errx(EX_DATAERR, "invalid protocol ``%s''", *av); 3013102098Sluigi } else 3014102098Sluigi goto read_options; 301598943Sluigi OR_BLOCK(get_proto); 301698943Sluigi 301798943Sluigi /* 3018102087Sluigi * "from", mandatory 301998943Sluigi */ 3020204591Sluigi if ((av[0] == NULL) || _substrcmp(*av, "from") != 0) 302198943Sluigi errx(EX_USAGE, "missing ``from''"); 3022204591Sluigi av++; 302398943Sluigi 302498943Sluigi /* 302598943Sluigi * source IP, mandatory 302698943Sluigi */ 302798943Sluigi OR_START(source_ip); 302898943Sluigi NOT_BLOCK; /* optional "not" */ 302998943Sluigi NEED1("missing source address"); 3030145246Sbrooks if (add_src(cmd, *av, proto)) { 3031204591Sluigi av++; 3032102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 3033102087Sluigi prev = cmd; 3034102087Sluigi cmd = next_cmd(cmd); 3035102087Sluigi } 3036145246Sbrooks } else 3037145246Sbrooks errx(EX_USAGE, "bad source address %s", *av); 303898943Sluigi OR_BLOCK(source_ip); 303998943Sluigi 304098943Sluigi /* 304198943Sluigi * source ports, optional 304298943Sluigi */ 304398943Sluigi NOT_BLOCK; /* optional "not" */ 3044204591Sluigi if ( av[0] != NULL ) { 3045140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3046102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 3047204591Sluigi av++; 3048102087Sluigi if (F_LEN(cmd) != 0) 3049102087Sluigi cmd = next_cmd(cmd); 3050101641Sluigi } 305198943Sluigi } 305298943Sluigi 305398943Sluigi /* 3054102087Sluigi * "to", mandatory 305598943Sluigi */ 3056204591Sluigi if ( (av[0] == NULL) || _substrcmp(*av, "to") != 0 ) 305798943Sluigi errx(EX_USAGE, "missing ``to''"); 3058204591Sluigi av++; 305998943Sluigi 306098943Sluigi /* 306198943Sluigi * destination, mandatory 306298943Sluigi */ 306398943Sluigi OR_START(dest_ip); 306498943Sluigi NOT_BLOCK; /* optional "not" */ 306598943Sluigi NEED1("missing dst address"); 3066145246Sbrooks if (add_dst(cmd, *av, proto)) { 3067204591Sluigi av++; 3068102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 3069102087Sluigi prev = cmd; 3070102087Sluigi cmd = next_cmd(cmd); 3071102087Sluigi } 3072145246Sbrooks } else 3073145246Sbrooks errx( EX_USAGE, "bad destination address %s", *av); 307498943Sluigi OR_BLOCK(dest_ip); 307598943Sluigi 307698943Sluigi /* 307798943Sluigi * dest. ports, optional 307898943Sluigi */ 307998943Sluigi NOT_BLOCK; /* optional "not" */ 3080204591Sluigi if (av[0]) { 3081140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3082102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 3083204591Sluigi av++; 3084102087Sluigi if (F_LEN(cmd) != 0) 3085102087Sluigi cmd = next_cmd(cmd); 3086101641Sluigi } 308798943Sluigi } 308898943Sluigi 308998943Sluigiread_options: 3090204591Sluigi if (av[0] && first_cmd == cmd) { 3091102087Sluigi /* 3092102087Sluigi * nothing specified so far, store in the rule to ease 3093102087Sluigi * printout later. 3094102087Sluigi */ 3095102087Sluigi rule->_pad = 1; 3096102087Sluigi } 309798943Sluigi prev = NULL; 3098204591Sluigi while ( av[0] != NULL ) { 3099101641Sluigi char *s; 3100101641Sluigi ipfw_insn_u32 *cmd32; /* alias for cmd */ 310198943Sluigi 3102101641Sluigi s = *av; 3103101641Sluigi cmd32 = (ipfw_insn_u32 *)cmd; 3104101641Sluigi 310598943Sluigi if (*s == '!') { /* alternate syntax for NOT */ 310698943Sluigi if (cmd->len & F_NOT) 310798943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 310898943Sluigi cmd->len = F_NOT; 310998943Sluigi s++; 311098943Sluigi } 311198943Sluigi i = match_token(rule_options, s); 3112204591Sluigi av++; 311398943Sluigi switch(i) { 311498943Sluigi case TOK_NOT: 311598943Sluigi if (cmd->len & F_NOT) 311698943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 311798943Sluigi cmd->len = F_NOT; 311898943Sluigi break; 311998943Sluigi 312098943Sluigi case TOK_OR: 3121101641Sluigi if (open_par == 0 || prev == NULL) 312298943Sluigi errx(EX_USAGE, "invalid \"or\" block\n"); 312398943Sluigi prev->len |= F_OR; 312498943Sluigi break; 3125101641Sluigi 3126101641Sluigi case TOK_STARTBRACE: 3127101641Sluigi if (open_par) 3128101641Sluigi errx(EX_USAGE, "+nested \"(\" not allowed\n"); 3129101641Sluigi open_par = 1; 3130101641Sluigi break; 3131101641Sluigi 3132101641Sluigi case TOK_ENDBRACE: 3133101641Sluigi if (!open_par) 3134101641Sluigi errx(EX_USAGE, "+missing \")\"\n"); 3135101641Sluigi open_par = 0; 3136102087Sluigi prev = NULL; 3137101641Sluigi break; 3138101641Sluigi 313998943Sluigi case TOK_IN: 314098943Sluigi fill_cmd(cmd, O_IN, 0, 0); 314198943Sluigi break; 314298943Sluigi 314398943Sluigi case TOK_OUT: 314498943Sluigi cmd->len ^= F_NOT; /* toggle F_NOT */ 314598943Sluigi fill_cmd(cmd, O_IN, 0, 0); 314698943Sluigi break; 314798943Sluigi 3148136073Sgreen case TOK_DIVERTED: 3149136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 3); 3150136073Sgreen break; 3151136073Sgreen 3152136073Sgreen case TOK_DIVERTEDLOOPBACK: 3153136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 1); 3154136073Sgreen break; 3155136073Sgreen 3156136073Sgreen case TOK_DIVERTEDOUTPUT: 3157136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 2); 3158136073Sgreen break; 3159136073Sgreen 316098943Sluigi case TOK_FRAG: 316198943Sluigi fill_cmd(cmd, O_FRAG, 0, 0); 316298943Sluigi break; 316398943Sluigi 316498943Sluigi case TOK_LAYER2: 316598943Sluigi fill_cmd(cmd, O_LAYER2, 0, 0); 316698943Sluigi break; 316798943Sluigi 316898943Sluigi case TOK_XMIT: 316998943Sluigi case TOK_RECV: 317098943Sluigi case TOK_VIA: 317198943Sluigi NEED1("recv, xmit, via require interface name" 317298943Sluigi " or address"); 317398943Sluigi fill_iface((ipfw_insn_if *)cmd, av[0]); 3174204591Sluigi av++; 317598943Sluigi if (F_LEN(cmd) == 0) /* not a valid address */ 317698943Sluigi break; 317798943Sluigi if (i == TOK_XMIT) 317898943Sluigi cmd->opcode = O_XMIT; 317998943Sluigi else if (i == TOK_RECV) 318098943Sluigi cmd->opcode = O_RECV; 318198943Sluigi else if (i == TOK_VIA) 318298943Sluigi cmd->opcode = O_VIA; 318398943Sluigi break; 318498943Sluigi 318599475Sluigi case TOK_ICMPTYPES: 318699475Sluigi NEED1("icmptypes requires list of types"); 318799475Sluigi fill_icmptypes((ipfw_insn_u32 *)cmd, *av); 3188204591Sluigi av++; 318999475Sluigi break; 3190145246Sbrooks 3191145246Sbrooks case TOK_ICMP6TYPES: 3192145246Sbrooks NEED1("icmptypes requires list of types"); 3193145246Sbrooks fill_icmp6types((ipfw_insn_icmp6 *)cmd, *av); 3194204591Sluigi av++; 3195145246Sbrooks break; 319699475Sluigi 319798943Sluigi case TOK_IPTTL: 319898943Sluigi NEED1("ipttl requires TTL"); 3199116690Sluigi if (strpbrk(*av, "-,")) { 3200116690Sluigi if (!add_ports(cmd, *av, 0, O_IPTTL)) 3201116690Sluigi errx(EX_DATAERR, "invalid ipttl %s", *av); 3202116690Sluigi } else 3203116690Sluigi fill_cmd(cmd, O_IPTTL, 0, strtoul(*av, NULL, 0)); 3204204591Sluigi av++; 320598943Sluigi break; 320698943Sluigi 320798943Sluigi case TOK_IPID: 3208116690Sluigi NEED1("ipid requires id"); 3209116690Sluigi if (strpbrk(*av, "-,")) { 3210116690Sluigi if (!add_ports(cmd, *av, 0, O_IPID)) 3211116690Sluigi errx(EX_DATAERR, "invalid ipid %s", *av); 3212116690Sluigi } else 3213116690Sluigi fill_cmd(cmd, O_IPID, 0, strtoul(*av, NULL, 0)); 3214204591Sluigi av++; 321598943Sluigi break; 321698943Sluigi 321798943Sluigi case TOK_IPLEN: 321898943Sluigi NEED1("iplen requires length"); 3219116690Sluigi if (strpbrk(*av, "-,")) { 3220116690Sluigi if (!add_ports(cmd, *av, 0, O_IPLEN)) 3221116690Sluigi errx(EX_DATAERR, "invalid ip len %s", *av); 3222116690Sluigi } else 3223116690Sluigi fill_cmd(cmd, O_IPLEN, 0, strtoul(*av, NULL, 0)); 3224204591Sluigi av++; 322598943Sluigi break; 322698943Sluigi 322798943Sluigi case TOK_IPVER: 322898943Sluigi NEED1("ipver requires version"); 322998943Sluigi fill_cmd(cmd, O_IPVER, 0, strtoul(*av, NULL, 0)); 3230204591Sluigi av++; 323198943Sluigi break; 323298943Sluigi 323399475Sluigi case TOK_IPPRECEDENCE: 323499475Sluigi NEED1("ipprecedence requires value"); 323599475Sluigi fill_cmd(cmd, O_IPPRECEDENCE, 0, 323699475Sluigi (strtoul(*av, NULL, 0) & 7) << 5); 3237204591Sluigi av++; 323899475Sluigi break; 323999475Sluigi 324098943Sluigi case TOK_IPOPTS: 324198943Sluigi NEED1("missing argument for ipoptions"); 3242101116Sluigi fill_flags(cmd, O_IPOPT, f_ipopts, *av); 3243204591Sluigi av++; 324498943Sluigi break; 324598943Sluigi 324699475Sluigi case TOK_IPTOS: 324799475Sluigi NEED1("missing argument for iptos"); 3248101116Sluigi fill_flags(cmd, O_IPTOS, f_iptos, *av); 3249204591Sluigi av++; 325099475Sluigi break; 325199475Sluigi 325298943Sluigi case TOK_UID: 325398943Sluigi NEED1("uid requires argument"); 325498943Sluigi { 325598943Sluigi char *end; 325698943Sluigi uid_t uid; 325798943Sluigi struct passwd *pwd; 325898943Sluigi 325998943Sluigi cmd->opcode = O_UID; 326098943Sluigi uid = strtoul(*av, &end, 0); 326198943Sluigi pwd = (*end == '\0') ? getpwuid(uid) : getpwnam(*av); 326298943Sluigi if (pwd == NULL) 326398943Sluigi errx(EX_DATAERR, "uid \"%s\" nonexistent", *av); 3264106504Smaxim cmd32->d[0] = pwd->pw_uid; 3265135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 3266204591Sluigi av++; 326798943Sluigi } 326898943Sluigi break; 326998943Sluigi 327098943Sluigi case TOK_GID: 327198943Sluigi NEED1("gid requires argument"); 327298943Sluigi { 327398943Sluigi char *end; 327498943Sluigi gid_t gid; 327598943Sluigi struct group *grp; 327698943Sluigi 327798943Sluigi cmd->opcode = O_GID; 327898943Sluigi gid = strtoul(*av, &end, 0); 327998943Sluigi grp = (*end == '\0') ? getgrgid(gid) : getgrnam(*av); 328098943Sluigi if (grp == NULL) 328198943Sluigi errx(EX_DATAERR, "gid \"%s\" nonexistent", *av); 3282106504Smaxim cmd32->d[0] = grp->gr_gid; 3283135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 3284204591Sluigi av++; 328598943Sluigi } 328698943Sluigi break; 328798943Sluigi 3288133600Scsjp case TOK_JAIL: 3289133600Scsjp NEED1("jail requires argument"); 3290133600Scsjp { 3291133600Scsjp char *end; 3292133600Scsjp int jid; 3293133600Scsjp 3294133600Scsjp cmd->opcode = O_JAIL; 3295133600Scsjp jid = (int)strtol(*av, &end, 0); 3296133600Scsjp if (jid < 0 || *end != '\0') 3297133600Scsjp errx(EX_DATAERR, "jail requires prison ID"); 3298135554Scsjp cmd32->d[0] = (uint32_t)jid; 3299135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 3300204591Sluigi av++; 3301133600Scsjp } 3302133600Scsjp break; 3303133600Scsjp 330498943Sluigi case TOK_ESTAB: 330598943Sluigi fill_cmd(cmd, O_ESTAB, 0, 0); 330698943Sluigi break; 330798943Sluigi 330898943Sluigi case TOK_SETUP: 330998943Sluigi fill_cmd(cmd, O_TCPFLAGS, 0, 331098943Sluigi (TH_SYN) | ( (TH_ACK) & 0xff) <<8 ); 331198943Sluigi break; 331298943Sluigi 3313136075Sgreen case TOK_TCPDATALEN: 3314136075Sgreen NEED1("tcpdatalen requires length"); 3315136075Sgreen if (strpbrk(*av, "-,")) { 3316136075Sgreen if (!add_ports(cmd, *av, 0, O_TCPDATALEN)) 3317136075Sgreen errx(EX_DATAERR, "invalid tcpdata len %s", *av); 3318136075Sgreen } else 3319136075Sgreen fill_cmd(cmd, O_TCPDATALEN, 0, 3320136075Sgreen strtoul(*av, NULL, 0)); 3321204591Sluigi av++; 3322136075Sgreen break; 3323136075Sgreen 332498943Sluigi case TOK_TCPOPTS: 332598943Sluigi NEED1("missing argument for tcpoptions"); 332698943Sluigi fill_flags(cmd, O_TCPOPTS, f_tcpopts, *av); 3327204591Sluigi av++; 332898943Sluigi break; 332998943Sluigi 333098943Sluigi case TOK_TCPSEQ: 333198943Sluigi case TOK_TCPACK: 333298943Sluigi NEED1("tcpseq/tcpack requires argument"); 333398943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 333498943Sluigi cmd->opcode = (i == TOK_TCPSEQ) ? O_TCPSEQ : O_TCPACK; 333598943Sluigi cmd32->d[0] = htonl(strtoul(*av, NULL, 0)); 3336204591Sluigi av++; 333798943Sluigi break; 333898943Sluigi 333998943Sluigi case TOK_TCPWIN: 334098943Sluigi NEED1("tcpwin requires length"); 334198943Sluigi fill_cmd(cmd, O_TCPWIN, 0, 334298943Sluigi htons(strtoul(*av, NULL, 0))); 3343204591Sluigi av++; 334498943Sluigi break; 334598943Sluigi 334698943Sluigi case TOK_TCPFLAGS: 334798943Sluigi NEED1("missing argument for tcpflags"); 334898943Sluigi cmd->opcode = O_TCPFLAGS; 334998943Sluigi fill_flags(cmd, O_TCPFLAGS, f_tcpflags, *av); 3350204591Sluigi av++; 335198943Sluigi break; 335298943Sluigi 335398943Sluigi case TOK_KEEPSTATE: 3354101641Sluigi if (open_par) 3355101641Sluigi errx(EX_USAGE, "keep-state cannot be part " 3356101641Sluigi "of an or block"); 335799909Sluigi if (have_state) 3358101116Sluigi errx(EX_USAGE, "only one of keep-state " 335999909Sluigi "and limit is allowed"); 3360101116Sluigi have_state = cmd; 336198943Sluigi fill_cmd(cmd, O_KEEP_STATE, 0, 0); 336298943Sluigi break; 336398943Sluigi 3364159636Soleg case TOK_LIMIT: { 3365159636Soleg ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 3366159636Soleg int val; 3367159636Soleg 3368101641Sluigi if (open_par) 3369159636Soleg errx(EX_USAGE, 3370159636Soleg "limit cannot be part of an or block"); 337199909Sluigi if (have_state) 3372168819Smaxim errx(EX_USAGE, "only one of keep-state and " 3373159636Soleg "limit is allowed"); 3374101116Sluigi have_state = cmd; 337598943Sluigi 337698943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_limit); 337798943Sluigi cmd->opcode = O_LIMIT; 3378159636Soleg c->limit_mask = c->conn_limit = 0; 337998943Sluigi 3380204591Sluigi while ( av[0] != NULL ) { 3381159636Soleg if ((val = match_token(limit_masks, *av)) <= 0) 338298943Sluigi break; 338398943Sluigi c->limit_mask |= val; 3384204591Sluigi av++; 338598943Sluigi } 3386159636Soleg 338798943Sluigi if (c->limit_mask == 0) 3388159636Soleg errx(EX_USAGE, "limit: missing limit mask"); 3389159636Soleg 3390193516Sluigi GET_UINT_ARG(c->conn_limit, IPFW_ARG_MIN, IPFW_ARG_MAX, 3391182823Srik TOK_LIMIT, rule_options); 3392159636Soleg 3393204591Sluigi av++; 339498943Sluigi break; 3395159636Soleg } 339698943Sluigi 3397102087Sluigi case TOK_PROTO: 3398102087Sluigi NEED1("missing protocol"); 3399145246Sbrooks if (add_proto(cmd, *av, &proto)) { 3400204591Sluigi av++; 3401102098Sluigi } else 3402116438Smaxim errx(EX_DATAERR, "invalid protocol ``%s''", 3403116438Smaxim *av); 3404102087Sluigi break; 3405106505Smaxim 3406102087Sluigi case TOK_SRCIP: 3407102087Sluigi NEED1("missing source IP"); 3408102087Sluigi if (add_srcip(cmd, *av)) { 3409204591Sluigi av++; 3410102087Sluigi } 3411102087Sluigi break; 3412102087Sluigi 3413102087Sluigi case TOK_DSTIP: 3414102087Sluigi NEED1("missing destination IP"); 3415102087Sluigi if (add_dstip(cmd, *av)) { 3416204591Sluigi av++; 3417102087Sluigi } 3418102087Sluigi break; 3419102087Sluigi 3420145246Sbrooks case TOK_SRCIP6: 3421145246Sbrooks NEED1("missing source IP6"); 3422145246Sbrooks if (add_srcip6(cmd, *av)) { 3423204591Sluigi av++; 3424145246Sbrooks } 3425145246Sbrooks break; 3426145246Sbrooks 3427145246Sbrooks case TOK_DSTIP6: 3428145246Sbrooks NEED1("missing destination IP6"); 3429145246Sbrooks if (add_dstip6(cmd, *av)) { 3430204591Sluigi av++; 3431145246Sbrooks } 3432145246Sbrooks break; 3433145246Sbrooks 3434102087Sluigi case TOK_SRCPORT: 3435102087Sluigi NEED1("missing source port"); 3436140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3437102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 3438204591Sluigi av++; 3439102087Sluigi } else 3440102087Sluigi errx(EX_DATAERR, "invalid source port %s", *av); 3441102087Sluigi break; 3442102087Sluigi 3443102087Sluigi case TOK_DSTPORT: 3444102087Sluigi NEED1("missing destination port"); 3445140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3446102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 3447204591Sluigi av++; 3448102087Sluigi } else 3449102087Sluigi errx(EX_DATAERR, "invalid destination port %s", 3450102087Sluigi *av); 3451102087Sluigi break; 3452102087Sluigi 3453102087Sluigi case TOK_MAC: 3454204591Sluigi if (add_mac(cmd, av)) 3455204591Sluigi av += 2; 3456102087Sluigi break; 3457102087Sluigi 3458102087Sluigi case TOK_MACTYPE: 3459102087Sluigi NEED1("missing mac type"); 3460204591Sluigi if (!add_mactype(cmd, *av)) 3461116438Smaxim errx(EX_DATAERR, "invalid mac type %s", *av); 3462204591Sluigi av++; 3463102087Sluigi break; 3464102087Sluigi 3465112250Scjc case TOK_VERREVPATH: 3466112250Scjc fill_cmd(cmd, O_VERREVPATH, 0, 0); 3467112250Scjc break; 3468116919Sluigi 3469128575Sandre case TOK_VERSRCREACH: 3470128575Sandre fill_cmd(cmd, O_VERSRCREACH, 0, 0); 3471128575Sandre break; 3472128575Sandre 3473133387Sandre case TOK_ANTISPOOF: 3474133387Sandre fill_cmd(cmd, O_ANTISPOOF, 0, 0); 3475133387Sandre break; 3476133387Sandre 3477117241Sluigi case TOK_IPSEC: 3478117241Sluigi fill_cmd(cmd, O_IPSEC, 0, 0); 3479117241Sluigi break; 3480117241Sluigi 3481145246Sbrooks case TOK_IPV6: 3482145246Sbrooks fill_cmd(cmd, O_IP6, 0, 0); 3483145246Sbrooks break; 3484145246Sbrooks 3485146894Smlaier case TOK_IPV4: 3486146894Smlaier fill_cmd(cmd, O_IP4, 0, 0); 3487146894Smlaier break; 3488146894Smlaier 3489145246Sbrooks case TOK_EXT6HDR: 3490145246Sbrooks fill_ext6hdr( cmd, *av ); 3491204591Sluigi av++; 3492145246Sbrooks break; 3493145246Sbrooks 3494145246Sbrooks case TOK_FLOWID: 3495145246Sbrooks if (proto != IPPROTO_IPV6 ) 3496145246Sbrooks errx( EX_USAGE, "flow-id filter is active " 3497145246Sbrooks "only for ipv6 protocol\n"); 3498145246Sbrooks fill_flow6( (ipfw_insn_u32 *) cmd, *av ); 3499204591Sluigi av++; 3500145246Sbrooks break; 3501145246Sbrooks 3502117469Sluigi case TOK_COMMENT: 3503204591Sluigi fill_comment(cmd, av); 3504204591Sluigi av[0]=NULL; 3505117469Sluigi break; 3506117469Sluigi 3507158879Soleg case TOK_TAGGED: 3508204591Sluigi if (av[0] && strpbrk(*av, "-,")) { 3509158879Soleg if (!add_ports(cmd, *av, 0, O_TAGGED)) 3510159636Soleg errx(EX_DATAERR, "tagged: invalid tag" 3511159636Soleg " list: %s", *av); 3512158879Soleg } 3513159636Soleg else { 3514159636Soleg uint16_t tag; 3515159636Soleg 3516193516Sluigi GET_UINT_ARG(tag, IPFW_ARG_MIN, IPFW_ARG_MAX, 3517182823Srik TOK_TAGGED, rule_options); 3518159636Soleg fill_cmd(cmd, O_TAGGED, 0, tag); 3519159636Soleg } 3520204591Sluigi av++; 3521158879Soleg break; 3522158879Soleg 3523178888Sjulian case TOK_FIB: 3524178888Sjulian NEED1("fib requires fib number"); 3525178888Sjulian fill_cmd(cmd, O_FIB, 0, strtoul(*av, NULL, 0)); 3526204591Sluigi av++; 3527178888Sjulian break; 3528178888Sjulian 3529200567Sluigi case TOK_LOOKUP: { 3530200567Sluigi ipfw_insn_u32 *c = (ipfw_insn_u32 *)cmd; 3531200567Sluigi char *p; 3532200567Sluigi int j; 3533200567Sluigi 3534205169Sluigi if (!av[0] || !av[1]) 3535200567Sluigi errx(EX_USAGE, "format: lookup argument tablenum"); 3536200567Sluigi cmd->opcode = O_IP_DST_LOOKUP; 3537200567Sluigi cmd->len |= F_INSN_SIZE(ipfw_insn) + 2; 3538200567Sluigi i = match_token(rule_options, *av); 3539200567Sluigi for (j = 0; lookup_key[j] >= 0 ; j++) { 3540200567Sluigi if (i == lookup_key[j]) 3541200567Sluigi break; 3542200567Sluigi } 3543200567Sluigi if (lookup_key[j] <= 0) 3544200567Sluigi errx(EX_USAGE, "format: cannot lookup on %s", *av); 3545200567Sluigi c->d[1] = j; // i converted to option 3546204591Sluigi av++; 3547200567Sluigi cmd->arg1 = strtoul(*av, &p, 0); 3548200567Sluigi if (p && *p) 3549200567Sluigi errx(EX_USAGE, "format: lookup argument tablenum"); 3550204591Sluigi av++; 3551200567Sluigi } 3552200567Sluigi break; 3553200567Sluigi 355498943Sluigi default: 355598943Sluigi errx(EX_USAGE, "unrecognised option [%d] %s\n", i, s); 355698943Sluigi } 355798943Sluigi if (F_LEN(cmd) > 0) { /* prepare to advance */ 355898943Sluigi prev = cmd; 355998943Sluigi cmd = next_cmd(cmd); 356098943Sluigi } 356198943Sluigi } 356298943Sluigi 356398943Sluigidone: 356498943Sluigi /* 356598943Sluigi * Now copy stuff into the rule. 356698943Sluigi * If we have a keep-state option, the first instruction 356798943Sluigi * must be a PROBE_STATE (which is generated here). 356898943Sluigi * If we have a LOG option, it was stored as the first command, 356998943Sluigi * and now must be moved to the top of the action part. 357098943Sluigi */ 357198943Sluigi dst = (ipfw_insn *)rule->cmd; 357298943Sluigi 357398943Sluigi /* 3574107289Sluigi * First thing to write into the command stream is the match probability. 3575107289Sluigi */ 3576107289Sluigi if (match_prob != 1) { /* 1 means always match */ 3577107289Sluigi dst->opcode = O_PROB; 3578107289Sluigi dst->len = 2; 3579107289Sluigi *((int32_t *)(dst+1)) = (int32_t)(match_prob * 0x7fffffff); 3580107289Sluigi dst += dst->len; 3581107289Sluigi } 3582107289Sluigi 3583107289Sluigi /* 358498943Sluigi * generate O_PROBE_STATE if necessary 358598943Sluigi */ 3586101116Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 358798943Sluigi fill_cmd(dst, O_PROBE_STATE, 0, 0); 358898943Sluigi dst = next_cmd(dst); 358998943Sluigi } 3590158879Soleg 3591158879Soleg /* copy all commands but O_LOG, O_KEEP_STATE, O_LIMIT, O_ALTQ, O_TAG */ 359298943Sluigi for (src = (ipfw_insn *)cmdbuf; src != cmd; src += i) { 359398943Sluigi i = F_LEN(src); 359498943Sluigi 3595101116Sluigi switch (src->opcode) { 3596101116Sluigi case O_LOG: 3597101116Sluigi case O_KEEP_STATE: 3598101116Sluigi case O_LIMIT: 3599136071Sgreen case O_ALTQ: 3600158879Soleg case O_TAG: 3601101116Sluigi break; 3602101116Sluigi default: 3603117328Sluigi bcopy(src, dst, i * sizeof(uint32_t)); 360498943Sluigi dst += i; 360598943Sluigi } 360698943Sluigi } 360798943Sluigi 360898943Sluigi /* 3609101116Sluigi * put back the have_state command as last opcode 3610101116Sluigi */ 3611101295Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 3612101116Sluigi i = F_LEN(have_state); 3613117328Sluigi bcopy(have_state, dst, i * sizeof(uint32_t)); 3614101116Sluigi dst += i; 3615101116Sluigi } 3616101116Sluigi /* 361798943Sluigi * start action section 361898943Sluigi */ 361998943Sluigi rule->act_ofs = dst - rule->cmd; 362098943Sluigi 3621158879Soleg /* put back O_LOG, O_ALTQ, O_TAG if necessary */ 3622136071Sgreen if (have_log) { 3623136071Sgreen i = F_LEN(have_log); 3624136071Sgreen bcopy(have_log, dst, i * sizeof(uint32_t)); 362598943Sluigi dst += i; 362698943Sluigi } 3627136071Sgreen if (have_altq) { 3628136071Sgreen i = F_LEN(have_altq); 3629136071Sgreen bcopy(have_altq, dst, i * sizeof(uint32_t)); 3630136071Sgreen dst += i; 3631136071Sgreen } 3632158879Soleg if (have_tag) { 3633158879Soleg i = F_LEN(have_tag); 3634158879Soleg bcopy(have_tag, dst, i * sizeof(uint32_t)); 3635158879Soleg dst += i; 3636158879Soleg } 363798943Sluigi /* 363898943Sluigi * copy all other actions 363998943Sluigi */ 364098943Sluigi for (src = (ipfw_insn *)actbuf; src != action; src += i) { 364198943Sluigi i = F_LEN(src); 3642117328Sluigi bcopy(src, dst, i * sizeof(uint32_t)); 364398943Sluigi dst += i; 364498943Sluigi } 364598943Sluigi 3646117328Sluigi rule->cmd_len = (uint32_t *)dst - (uint32_t *)(rule->cmd); 3647117469Sluigi i = (char *)dst - (char *)rule; 3648119740Stmm if (do_cmd(IP_FW_ADD, rule, (uintptr_t)&i) == -1) 364998943Sluigi err(EX_UNAVAILABLE, "getsockopt(%s)", "IP_FW_ADD"); 3650187764Sluigi if (!co.do_quiet) 3651117469Sluigi show_ipfw(rule, 0, 0); 365298943Sluigi} 365398943Sluigi 3654187767Sluigi/* 3655187767Sluigi * clear the counters or the log counters. 3656187767Sluigi */ 3657187767Sluigivoid 3658187767Sluigiipfw_zero(int ac, char *av[], int optname /* 0 = IP_FW_ZERO, 1 = IP_FW_RESETLOG */) 365998943Sluigi{ 3660170923Smaxim uint32_t arg, saved_arg; 366198943Sluigi int failed = EX_OK; 3662170923Smaxim char const *errstr; 3663187767Sluigi char const *name = optname ? "RESETLOG" : "ZERO"; 366498943Sluigi 3665187767Sluigi optname = optname ? IP_FW_RESETLOG : IP_FW_ZERO; 3666187767Sluigi 366798943Sluigi av++; ac--; 366898943Sluigi 366998943Sluigi if (!ac) { 367098943Sluigi /* clear all entries */ 3671117328Sluigi if (do_cmd(optname, NULL, 0) < 0) 3672117328Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_FW_%s)", name); 3673187764Sluigi if (!co.do_quiet) 3674117328Sluigi printf("%s.\n", optname == IP_FW_ZERO ? 3675117328Sluigi "Accounting cleared":"Logging counts reset"); 367698943Sluigi 367798943Sluigi return; 367898943Sluigi } 367998943Sluigi 368098943Sluigi while (ac) { 368198943Sluigi /* Rule number */ 368298943Sluigi if (isdigit(**av)) { 3683170923Smaxim arg = strtonum(*av, 0, 0xffff, &errstr); 3684170923Smaxim if (errstr) 3685170923Smaxim errx(EX_DATAERR, 3686170923Smaxim "invalid rule number %s\n", *av); 3687170923Smaxim saved_arg = arg; 3688187764Sluigi if (co.use_set) 3689187764Sluigi arg |= (1 << 24) | ((co.use_set - 1) << 16); 369098943Sluigi av++; 369198943Sluigi ac--; 3692170923Smaxim if (do_cmd(optname, &arg, sizeof(arg))) { 3693117328Sluigi warn("rule %u: setsockopt(IP_FW_%s)", 3694170923Smaxim saved_arg, name); 369598943Sluigi failed = EX_UNAVAILABLE; 3696187764Sluigi } else if (!co.do_quiet) 3697170923Smaxim printf("Entry %d %s.\n", saved_arg, 3698117328Sluigi optname == IP_FW_ZERO ? 3699117328Sluigi "cleared" : "logging count reset"); 370098943Sluigi } else { 370198943Sluigi errx(EX_USAGE, "invalid rule number ``%s''", *av); 370298943Sluigi } 370398943Sluigi } 370498943Sluigi if (failed != EX_OK) 370598943Sluigi exit(failed); 370698943Sluigi} 370798943Sluigi 3708187767Sluigivoid 3709187767Sluigiipfw_flush(int force) 371098943Sluigi{ 3711187764Sluigi int cmd = co.do_pipe ? IP_DUMMYNET_FLUSH : IP_FW_FLUSH; 371298943Sluigi 3713187764Sluigi if (!force && !co.do_quiet) { /* need to ask user */ 371498943Sluigi int c; 371598943Sluigi 371698943Sluigi printf("Are you sure? [yn] "); 371798943Sluigi fflush(stdout); 371898943Sluigi do { 371998943Sluigi c = toupper(getc(stdin)); 372098943Sluigi while (c != '\n' && getc(stdin) != '\n') 372198943Sluigi if (feof(stdin)) 372298943Sluigi return; /* and do not flush */ 372398943Sluigi } while (c != 'Y' && c != 'N'); 372498943Sluigi printf("\n"); 372598943Sluigi if (c == 'N') /* user said no */ 372698943Sluigi return; 372798943Sluigi } 3728204591Sluigi if (co.do_pipe) { 3729204591Sluigi dummynet_flush(); 3730204591Sluigi return; 3731204591Sluigi } 3732170923Smaxim /* `ipfw set N flush` - is the same that `ipfw delete set N` */ 3733187764Sluigi if (co.use_set) { 3734187764Sluigi uint32_t arg = ((co.use_set - 1) & 0xffff) | (1 << 24); 3735170923Smaxim if (do_cmd(IP_FW_DEL, &arg, sizeof(arg)) < 0) 3736170923Smaxim err(EX_UNAVAILABLE, "setsockopt(IP_FW_DEL)"); 3737170923Smaxim } else if (do_cmd(cmd, NULL, 0) < 0) 373898943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_%s_FLUSH)", 3739187764Sluigi co.do_pipe ? "DUMMYNET" : "FW"); 3740187764Sluigi if (!co.do_quiet) 3741187764Sluigi printf("Flushed all %s.\n", co.do_pipe ? "pipes" : "rules"); 374298943Sluigi} 374398943Sluigi 3744117544Sluigi 3745183407Srikstatic void table_list(ipfw_table_entry ent, int need_header); 3746183228Srik 3747117544Sluigi/* 3748130281Sru * This one handles all table-related commands 3749130281Sru * ipfw table N add addr[/masklen] [value] 3750130281Sru * ipfw table N delete addr[/masklen] 3751183407Srik * ipfw table {N | all} flush 3752183407Srik * ipfw table {N | all} list 3753130281Sru */ 3754187767Sluigivoid 3755187767Sluigiipfw_table_handler(int ac, char *av[]) 3756130281Sru{ 3757130281Sru ipfw_table_entry ent; 3758130281Sru int do_add; 3759183407Srik int is_all; 3760183241Srik size_t len; 3761130281Sru char *p; 3762183407Srik uint32_t a; 3763183241Srik uint32_t tables_max; 3764130281Sru 3765183263Skeramida len = sizeof(tables_max); 3766183241Srik if (sysctlbyname("net.inet.ip.fw.tables_max", &tables_max, &len, 3767183241Srik NULL, 0) == -1) { 3768183241Srik#ifdef IPFW_TABLES_MAX 3769183241Srik warn("Warn: Failed to get the max tables number via sysctl. " 3770183241Srik "Using the compiled in defaults. \nThe reason was"); 3771183241Srik tables_max = IPFW_TABLES_MAX; 3772183241Srik#else 3773183241Srik errx(1, "Failed sysctlbyname(\"net.inet.ip.fw.tables_max\")"); 3774183241Srik#endif 3775183241Srik } 3776183241Srik 3777130281Sru ac--; av++; 3778130281Sru if (ac && isdigit(**av)) { 3779130281Sru ent.tbl = atoi(*av); 3780183407Srik is_all = 0; 3781130281Sru ac--; av++; 3782183407Srik } else if (ac && _substrcmp(*av, "all") == 0) { 3783183407Srik ent.tbl = 0; 3784183407Srik is_all = 1; 3785183407Srik ac--; av++; 3786130281Sru } else 3787183407Srik errx(EX_USAGE, "table number or 'all' keyword required"); 3788183241Srik if (ent.tbl >= tables_max) 3789183241Srik errx(EX_USAGE, "The table number exceeds the maximum allowed " 3790183241Srik "value (%d)", tables_max - 1); 3791130281Sru NEED1("table needs command"); 3792183407Srik if (is_all && _substrcmp(*av, "list") != 0 3793183407Srik && _substrcmp(*av, "flush") != 0) 3794183407Srik errx(EX_USAGE, "table number required"); 3795183407Srik 3796140271Sbrooks if (_substrcmp(*av, "add") == 0 || 3797140271Sbrooks _substrcmp(*av, "delete") == 0) { 3798130281Sru do_add = **av == 'a'; 3799130281Sru ac--; av++; 3800130281Sru if (!ac) 3801130281Sru errx(EX_USAGE, "IP address required"); 3802130281Sru p = strchr(*av, '/'); 3803130281Sru if (p) { 3804130281Sru *p++ = '\0'; 3805130281Sru ent.masklen = atoi(p); 3806130281Sru if (ent.masklen > 32) 3807130281Sru errx(EX_DATAERR, "bad width ``%s''", p); 3808130281Sru } else 3809130281Sru ent.masklen = 32; 3810130281Sru if (lookup_host(*av, (struct in_addr *)&ent.addr) != 0) 3811130298Sru errx(EX_NOHOST, "hostname ``%s'' unknown", *av); 3812130281Sru ac--; av++; 3813161424Sjulian if (do_add && ac) { 3814161424Sjulian unsigned int tval; 3815161424Sjulian /* isdigit is a bit of a hack here.. */ 3816161424Sjulian if (strchr(*av, (int)'.') == NULL && isdigit(**av)) { 3817161424Sjulian ent.value = strtoul(*av, NULL, 0); 3818161424Sjulian } else { 3819161424Sjulian if (lookup_host(*av, (struct in_addr *)&tval) == 0) { 3820161424Sjulian /* The value must be stored in host order * 3821161424Sjulian * so that the values < 65k can be distinguished */ 3822161424Sjulian ent.value = ntohl(tval); 3823161424Sjulian } else { 3824161424Sjulian errx(EX_NOHOST, "hostname ``%s'' unknown", *av); 3825161424Sjulian } 3826161424Sjulian } 3827161424Sjulian } else 3828130281Sru ent.value = 0; 3829130281Sru if (do_cmd(do_add ? IP_FW_TABLE_ADD : IP_FW_TABLE_DEL, 3830157335Sjulian &ent, sizeof(ent)) < 0) { 3831155639Sjulian /* If running silent, don't bomb out on these errors. */ 3832187764Sluigi if (!(co.do_quiet && (errno == (do_add ? EEXIST : ESRCH)))) 3833155639Sjulian err(EX_OSERR, "setsockopt(IP_FW_TABLE_%s)", 3834155639Sjulian do_add ? "ADD" : "DEL"); 3835155639Sjulian /* In silent mode, react to a failed add by deleting */ 3836157332Sjulian if (do_add) { 3837155639Sjulian do_cmd(IP_FW_TABLE_DEL, &ent, sizeof(ent)); 3838155639Sjulian if (do_cmd(IP_FW_TABLE_ADD, 3839155639Sjulian &ent, sizeof(ent)) < 0) 3840155639Sjulian err(EX_OSERR, 3841155639Sjulian "setsockopt(IP_FW_TABLE_ADD)"); 3842157332Sjulian } 3843157335Sjulian } 3844140271Sbrooks } else if (_substrcmp(*av, "flush") == 0) { 3845204591Sluigi a = is_all ? tables_max : (uint32_t)(ent.tbl + 1); 3846183407Srik do { 3847183407Srik if (do_cmd(IP_FW_TABLE_FLUSH, &ent.tbl, 3848183407Srik sizeof(ent.tbl)) < 0) 3849183407Srik err(EX_OSERR, "setsockopt(IP_FW_TABLE_FLUSH)"); 3850183407Srik } while (++ent.tbl < a); 3851140271Sbrooks } else if (_substrcmp(*av, "list") == 0) { 3852204591Sluigi a = is_all ? tables_max : (uint32_t)(ent.tbl + 1); 3853183407Srik do { 3854183415Srik table_list(ent, is_all); 3855183407Srik } while (++ent.tbl < a); 3856183228Srik } else 3857183228Srik errx(EX_USAGE, "invalid table command %s", *av); 3858183228Srik} 3859183205Srik 3860183228Srikstatic void 3861183407Sriktable_list(ipfw_table_entry ent, int need_header) 3862183228Srik{ 3863183228Srik ipfw_table *tbl; 3864183228Srik socklen_t l; 3865183228Srik uint32_t a; 3866183205Srik 3867183228Srik a = ent.tbl; 3868183228Srik l = sizeof(a); 3869183228Srik if (do_cmd(IP_FW_TABLE_GETSIZE, &a, (uintptr_t)&l) < 0) 3870183228Srik err(EX_OSERR, "getsockopt(IP_FW_TABLE_GETSIZE)"); 3871183228Srik 3872183228Srik /* If a is zero we have nothing to do, the table is empty. */ 3873183228Srik if (a == 0) 3874183228Srik return; 3875183228Srik 3876183228Srik l = sizeof(*tbl) + a * sizeof(ipfw_table_entry); 3877187716Sluigi tbl = safe_calloc(1, l); 3878183228Srik tbl->tbl = ent.tbl; 3879183228Srik if (do_cmd(IP_FW_TABLE_LIST, tbl, (uintptr_t)&l) < 0) 3880183228Srik err(EX_OSERR, "getsockopt(IP_FW_TABLE_LIST)"); 3881183407Srik if (tbl->cnt && need_header) 3882183407Srik printf("---table(%d)---\n", tbl->tbl); 3883183228Srik for (a = 0; a < tbl->cnt; a++) { 3884183228Srik unsigned int tval; 3885183228Srik tval = tbl->ent[a].value; 3886187764Sluigi if (co.do_value_as_ip) { 3887183228Srik char tbuf[128]; 3888183228Srik strncpy(tbuf, inet_ntoa(*(struct in_addr *) 3889161456Sjulian &tbl->ent[a].addr), 127); 3890183228Srik /* inet_ntoa expects network order */ 3891183228Srik tval = htonl(tval); 3892183228Srik printf("%s/%u %s\n", tbuf, tbl->ent[a].masklen, 3893183228Srik inet_ntoa(*(struct in_addr *)&tval)); 3894183228Srik } else { 3895183228Srik printf("%s/%u %u\n", 3896183228Srik inet_ntoa(*(struct in_addr *)&tbl->ent[a].addr), 3897183228Srik tbl->ent[a].masklen, tval); 3898130281Sru } 3899183228Srik } 3900183228Srik free(tbl); 3901130281Sru} 3902