ipfw2.c revision 205169
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 205169 2010-03-15 15:43:35Z luigi $ 2198943Sluigi */ 2298943Sluigi 23187604Sluigi#include <sys/types.h> 2498943Sluigi#include <sys/socket.h> 2598943Sluigi#include <sys/sockio.h> 2698943Sluigi#include <sys/sysctl.h> 2798943Sluigi 28187767Sluigi#include "ipfw2.h" 29187767Sluigi 3098943Sluigi#include <ctype.h> 3198943Sluigi#include <err.h> 3298943Sluigi#include <errno.h> 3398943Sluigi#include <grp.h> 3498943Sluigi#include <netdb.h> 3598943Sluigi#include <pwd.h> 3698943Sluigi#include <stdio.h> 3798943Sluigi#include <stdlib.h> 3898943Sluigi#include <string.h> 3998943Sluigi#include <sysexits.h> 40187983Sluigi#include <time.h> /* ctime */ 41187604Sluigi#include <timeconv.h> /* _long_to_time */ 42136071Sgreen#include <unistd.h> 43136071Sgreen#include <fcntl.h> 4498943Sluigi 45169424Smaxim#include <net/ethernet.h> 46187983Sluigi#include <net/if.h> /* only IFNAMSIZ */ 4798943Sluigi#include <netinet/in.h> 48187983Sluigi#include <netinet/in_systm.h> /* only n_short, n_long */ 4998943Sluigi#include <netinet/ip.h> 5098943Sluigi#include <netinet/ip_icmp.h> 5198943Sluigi#include <netinet/ip_fw.h> 5298943Sluigi#include <netinet/tcp.h> 5398943Sluigi#include <arpa/inet.h> 5498943Sluigi 55187767Sluigistruct cmdline_opts co; /* global options */ 5698943Sluigi 57187767Sluigiint resvd_set_number = RESVD_SET; 58187764Sluigi 59159636Soleg#define GET_UINT_ARG(arg, min, max, tok, s_x) do { \ 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 924102087Sluigi#define HAVE_OPTIONS 0x8000 92598943Sluigi 926101978Sluigi#define HAVE_IP (HAVE_PROTO | HAVE_SRCIP | HAVE_DSTIP) 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"); 1027102087Sluigi flags = HAVE_IP; /* avoid printing anything else */ 102898943Sluigi break; 102998943Sluigi 103098943Sluigi case O_ACCEPT: 103198943Sluigi printf("allow"); 103298943Sluigi break; 103398943Sluigi 103498943Sluigi case O_COUNT: 103598943Sluigi printf("count"); 103698943Sluigi break; 103798943Sluigi 103898943Sluigi case O_DENY: 103998943Sluigi printf("deny"); 104098943Sluigi break; 104198943Sluigi 104299475Sluigi case O_REJECT: 104399475Sluigi if (cmd->arg1 == ICMP_REJECT_RST) 104499475Sluigi printf("reset"); 104599475Sluigi else if (cmd->arg1 == ICMP_UNREACH_HOST) 104699475Sluigi printf("reject"); 104799475Sluigi else 104899475Sluigi print_reject_code(cmd->arg1); 104999475Sluigi break; 105099475Sluigi 1051149020Sbz case O_UNREACH6: 1052149020Sbz if (cmd->arg1 == ICMP6_UNREACH_RST) 1053149020Sbz printf("reset6"); 1054149020Sbz else 1055149020Sbz print_unreach6_code(cmd->arg1); 1056149020Sbz break; 1057149020Sbz 1058159636Soleg case O_SKIPTO: 1059159636Soleg PRINT_UINT_ARG("skipto ", cmd->arg1); 106098943Sluigi break; 106198943Sluigi 106298943Sluigi case O_PIPE: 1063159636Soleg PRINT_UINT_ARG("pipe ", cmd->arg1); 1064159636Soleg break; 1065159636Soleg 106698943Sluigi case O_QUEUE: 1067159636Soleg PRINT_UINT_ARG("queue ", cmd->arg1); 1068159636Soleg break; 1069159636Soleg 107098943Sluigi case O_DIVERT: 1071159636Soleg PRINT_UINT_ARG("divert ", cmd->arg1); 1072159636Soleg break; 1073159636Soleg 107498943Sluigi case O_TEE: 1075159636Soleg PRINT_UINT_ARG("tee ", cmd->arg1); 1076159636Soleg break; 1077159636Soleg 1078141351Sglebius case O_NETGRAPH: 1079159636Soleg PRINT_UINT_ARG("netgraph ", cmd->arg1); 1080159636Soleg break; 1081159636Soleg 1082141351Sglebius case O_NGTEE: 1083159636Soleg PRINT_UINT_ARG("ngtee ", cmd->arg1); 1084159636Soleg break; 1085141351Sglebius 108698943Sluigi case O_FORWARD_IP: 108798943Sluigi { 108898943Sluigi ipfw_insn_sa *s = (ipfw_insn_sa *)cmd; 108998943Sluigi 1090161424Sjulian if (s->sa.sin_addr.s_addr == INADDR_ANY) { 1091161424Sjulian printf("fwd tablearg"); 1092161424Sjulian } else { 1093161424Sjulian printf("fwd %s", inet_ntoa(s->sa.sin_addr)); 1094161424Sjulian } 109598943Sluigi if (s->sa.sin_port) 1096103241Sluigi printf(",%d", s->sa.sin_port); 109798943Sluigi } 109898943Sluigi break; 109998943Sluigi 110098943Sluigi case O_LOG: /* O_LOG is printed last */ 110198943Sluigi logptr = (ipfw_insn_log *)cmd; 110298943Sluigi break; 110398943Sluigi 1104136071Sgreen case O_ALTQ: /* O_ALTQ is printed after O_LOG */ 1105136071Sgreen altqptr = (ipfw_insn_altq *)cmd; 1106136071Sgreen break; 1107136071Sgreen 1108158879Soleg case O_TAG: 1109158879Soleg tagptr = cmd; 1110158879Soleg break; 1111158879Soleg 1112165648Spiso case O_NAT: 1113176517Spiso PRINT_UINT_ARG("nat ", cmd->arg1); 1114165648Spiso break; 1115165648Spiso 1116178888Sjulian case O_SETFIB: 1117178888Sjulian PRINT_UINT_ARG("setfib ", cmd->arg1); 1118178888Sjulian break; 1119190633Spiso 1120190633Spiso case O_REASS: 1121190633Spiso printf("reass"); 1122190633Spiso break; 1123178888Sjulian 112498943Sluigi default: 1125136071Sgreen printf("** unrecognized action %d len %d ", 112698943Sluigi cmd->opcode, cmd->len); 112798943Sluigi } 112898943Sluigi } 112998943Sluigi if (logptr) { 113098943Sluigi if (logptr->max_log > 0) 113199909Sluigi printf(" log logamount %d", logptr->max_log); 113298943Sluigi else 113399909Sluigi printf(" log"); 113498943Sluigi } 1135204591Sluigi#ifndef NO_ALTQ 1136136071Sgreen if (altqptr) { 1137187983Sluigi print_altq_cmd(altqptr); 1138136071Sgreen } 1139204591Sluigi#endif 1140158879Soleg if (tagptr) { 1141158879Soleg if (tagptr->len & F_NOT) 1142159636Soleg PRINT_UINT_ARG(" untag ", tagptr->arg1); 1143158879Soleg else 1144159636Soleg PRINT_UINT_ARG(" tag ", tagptr->arg1); 1145158879Soleg } 1146136071Sgreen 114798943Sluigi /* 1148102087Sluigi * then print the body. 114998943Sluigi */ 1150146894Smlaier for (l = rule->act_ofs, cmd = rule->cmd ; 1151146894Smlaier l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 1152146894Smlaier if ((cmd->len & F_OR) || (cmd->len & F_NOT)) 1153146894Smlaier continue; 1154146894Smlaier if (cmd->opcode == O_IP4) { 1155146894Smlaier flags |= HAVE_PROTO4; 1156146894Smlaier break; 1157146894Smlaier } else if (cmd->opcode == O_IP6) { 1158146894Smlaier flags |= HAVE_PROTO6; 1159146894Smlaier break; 1160146894Smlaier } 1161146894Smlaier } 1162102087Sluigi if (rule->_pad & 1) { /* empty rules before options */ 1163187764Sluigi if (!co.do_compact) { 1164146894Smlaier show_prerequisites(&flags, HAVE_PROTO, 0); 1165146894Smlaier printf(" from any to any"); 1166146894Smlaier } 1167102087Sluigi flags |= HAVE_IP | HAVE_OPTIONS; 1168102087Sluigi } 1169102087Sluigi 1170187764Sluigi if (co.comment_only) 1171123495Sluigi comment = "..."; 1172123495Sluigi 117398943Sluigi for (l = rule->act_ofs, cmd = rule->cmd ; 117498943Sluigi l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 117599475Sluigi /* useful alias */ 117699475Sluigi ipfw_insn_u32 *cmd32 = (ipfw_insn_u32 *)cmd; 117798943Sluigi 1178187764Sluigi if (co.comment_only) { 1179123495Sluigi if (cmd->opcode != O_NOP) 1180123495Sluigi continue; 1181123495Sluigi printf(" // %s\n", (char *)(cmd + 1)); 1182123495Sluigi return; 1183123495Sluigi } 1184123495Sluigi 1185102087Sluigi show_prerequisites(&flags, 0, cmd->opcode); 1186102087Sluigi 118798943Sluigi switch(cmd->opcode) { 1188117577Sluigi case O_PROB: 1189107289Sluigi break; /* done already */ 1190107289Sluigi 119198943Sluigi case O_PROBE_STATE: 119298943Sluigi break; /* no need to print anything here */ 119398943Sluigi 119498943Sluigi case O_IP_SRC: 1195130281Sru case O_IP_SRC_LOOKUP: 119698943Sluigi case O_IP_SRC_MASK: 119798943Sluigi case O_IP_SRC_ME: 119898943Sluigi case O_IP_SRC_SET: 1199102087Sluigi show_prerequisites(&flags, HAVE_PROTO, 0); 120098943Sluigi if (!(flags & HAVE_SRCIP)) 120198943Sluigi printf(" from"); 120298943Sluigi if ((cmd->len & F_OR) && !or_block) 120398943Sluigi printf(" {"); 1204102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1205102087Sluigi (flags & HAVE_OPTIONS) ? " src-ip" : ""); 120698943Sluigi flags |= HAVE_SRCIP; 120798943Sluigi break; 120898943Sluigi 120998943Sluigi case O_IP_DST: 1210130281Sru case O_IP_DST_LOOKUP: 121198943Sluigi case O_IP_DST_MASK: 121298943Sluigi case O_IP_DST_ME: 121398943Sluigi case O_IP_DST_SET: 1214102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 121598943Sluigi if (!(flags & HAVE_DSTIP)) 121698943Sluigi printf(" to"); 121798943Sluigi if ((cmd->len & F_OR) && !or_block) 121898943Sluigi printf(" {"); 1219102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1220102087Sluigi (flags & HAVE_OPTIONS) ? " dst-ip" : ""); 122198943Sluigi flags |= HAVE_DSTIP; 122298943Sluigi break; 122398943Sluigi 1224145246Sbrooks case O_IP6_SRC: 1225145246Sbrooks case O_IP6_SRC_MASK: 1226145246Sbrooks case O_IP6_SRC_ME: 1227147105Smlaier show_prerequisites(&flags, HAVE_PROTO, 0); 1228145246Sbrooks if (!(flags & HAVE_SRCIP)) 1229145246Sbrooks printf(" from"); 1230145246Sbrooks if ((cmd->len & F_OR) && !or_block) 1231145246Sbrooks printf(" {"); 1232145246Sbrooks print_ip6((ipfw_insn_ip6 *)cmd, 1233145246Sbrooks (flags & HAVE_OPTIONS) ? " src-ip6" : ""); 1234145246Sbrooks flags |= HAVE_SRCIP | HAVE_PROTO; 1235145246Sbrooks break; 1236145246Sbrooks 1237145246Sbrooks case O_IP6_DST: 1238145246Sbrooks case O_IP6_DST_MASK: 1239145246Sbrooks case O_IP6_DST_ME: 1240145246Sbrooks show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 1241145246Sbrooks if (!(flags & HAVE_DSTIP)) 1242145246Sbrooks printf(" to"); 1243145246Sbrooks if ((cmd->len & F_OR) && !or_block) 1244145246Sbrooks printf(" {"); 1245145246Sbrooks print_ip6((ipfw_insn_ip6 *)cmd, 1246145246Sbrooks (flags & HAVE_OPTIONS) ? " dst-ip6" : ""); 1247145246Sbrooks flags |= HAVE_DSTIP; 1248145246Sbrooks break; 1249145246Sbrooks 1250145246Sbrooks case O_FLOW6ID: 1251145246Sbrooks print_flow6id( (ipfw_insn_u32 *) cmd ); 1252145246Sbrooks flags |= HAVE_OPTIONS; 1253145246Sbrooks break; 1254145246Sbrooks 125598943Sluigi case O_IP_DSTPORT: 1256102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 125798943Sluigi case O_IP_SRCPORT: 1258102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 1259101641Sluigi if ((cmd->len & F_OR) && !or_block) 1260101641Sluigi printf(" {"); 1261172306Smaxim if (cmd->len & F_NOT) 1262172306Smaxim printf(" not"); 1263102087Sluigi print_newports((ipfw_insn_u16 *)cmd, proto, 1264102087Sluigi (flags & HAVE_OPTIONS) ? cmd->opcode : 0); 126598943Sluigi break; 126698943Sluigi 126798943Sluigi case O_PROTO: { 1268145246Sbrooks struct protoent *pe = NULL; 126998943Sluigi 127098943Sluigi if ((cmd->len & F_OR) && !or_block) 127198943Sluigi printf(" {"); 127298943Sluigi if (cmd->len & F_NOT) 127398943Sluigi printf(" not"); 127498943Sluigi proto = cmd->arg1; 1275145567Sbrooks pe = getprotobynumber(cmd->arg1); 1276146894Smlaier if ((flags & (HAVE_PROTO4 | HAVE_PROTO6)) && 1277146894Smlaier !(flags & HAVE_PROTO)) 1278146894Smlaier show_prerequisites(&flags, 1279146894Smlaier HAVE_IP | HAVE_OPTIONS, 0); 1280102087Sluigi if (flags & HAVE_OPTIONS) 1281102087Sluigi printf(" proto"); 128298943Sluigi if (pe) 128398943Sluigi printf(" %s", pe->p_name); 128498943Sluigi else 128598943Sluigi printf(" %u", cmd->arg1); 128698943Sluigi } 128798943Sluigi flags |= HAVE_PROTO; 128898943Sluigi break; 1289106505Smaxim 129098943Sluigi default: /*options ... */ 1291146894Smlaier if (!(cmd->len & (F_OR|F_NOT))) 1292146894Smlaier if (((cmd->opcode == O_IP6) && 1293146894Smlaier (flags & HAVE_PROTO6)) || 1294146894Smlaier ((cmd->opcode == O_IP4) && 1295146894Smlaier (flags & HAVE_PROTO4))) 1296146894Smlaier break; 1297102087Sluigi show_prerequisites(&flags, HAVE_IP | HAVE_OPTIONS, 0); 129898943Sluigi if ((cmd->len & F_OR) && !or_block) 129998943Sluigi printf(" {"); 130098943Sluigi if (cmd->len & F_NOT && cmd->opcode != O_IN) 130198943Sluigi printf(" not"); 130298943Sluigi switch(cmd->opcode) { 1303169139Smaxim case O_MACADDR2: { 1304169139Smaxim ipfw_insn_mac *m = (ipfw_insn_mac *)cmd; 1305169139Smaxim 1306169139Smaxim printf(" MAC"); 1307169139Smaxim print_mac(m->addr, m->mask); 1308169139Smaxim print_mac(m->addr + 6, m->mask + 6); 1309169139Smaxim } 1310169139Smaxim break; 1311169139Smaxim 1312169139Smaxim case O_MAC_TYPE: 1313169139Smaxim print_newports((ipfw_insn_u16 *)cmd, 1314169139Smaxim IPPROTO_ETHERTYPE, cmd->opcode); 1315169139Smaxim break; 1316169139Smaxim 1317169139Smaxim 131898943Sluigi case O_FRAG: 131998943Sluigi printf(" frag"); 132098943Sluigi break; 132198943Sluigi 1322178888Sjulian case O_FIB: 1323178888Sjulian printf(" fib %u", cmd->arg1 ); 1324178888Sjulian break; 1325178888Sjulian 132698943Sluigi case O_IN: 132798943Sluigi printf(cmd->len & F_NOT ? " out" : " in"); 132898943Sluigi break; 132998943Sluigi 1330136073Sgreen case O_DIVERTED: 1331136073Sgreen switch (cmd->arg1) { 1332136073Sgreen case 3: 1333136073Sgreen printf(" diverted"); 1334136073Sgreen break; 1335136073Sgreen case 1: 1336136073Sgreen printf(" diverted-loopback"); 1337136073Sgreen break; 1338136073Sgreen case 2: 1339136073Sgreen printf(" diverted-output"); 1340136073Sgreen break; 1341136073Sgreen default: 1342136073Sgreen printf(" diverted-?<%u>", cmd->arg1); 1343136073Sgreen break; 1344136073Sgreen } 1345136073Sgreen break; 1346136073Sgreen 134798943Sluigi case O_LAYER2: 134898943Sluigi printf(" layer2"); 134998943Sluigi break; 135098943Sluigi case O_XMIT: 135198943Sluigi case O_RECV: 1352140423Sglebius case O_VIA: 1353140423Sglebius { 1354117469Sluigi char const *s; 135598943Sluigi ipfw_insn_if *cmdif = (ipfw_insn_if *)cmd; 135698943Sluigi 135798943Sluigi if (cmd->opcode == O_XMIT) 135898943Sluigi s = "xmit"; 135998943Sluigi else if (cmd->opcode == O_RECV) 136098943Sluigi s = "recv"; 1361117469Sluigi else /* if (cmd->opcode == O_VIA) */ 136298943Sluigi s = "via"; 136398943Sluigi if (cmdif->name[0] == '\0') 136499475Sluigi printf(" %s %s", s, 136599475Sluigi inet_ntoa(cmdif->p.ip)); 1366140423Sglebius else 1367140423Sglebius printf(" %s %s", s, cmdif->name); 1368140423Sglebius 136998943Sluigi break; 1370140423Sglebius } 137198943Sluigi case O_IPID: 1372116690Sluigi if (F_LEN(cmd) == 1) 1373116690Sluigi printf(" ipid %u", cmd->arg1 ); 1374116690Sluigi else 1375116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1376116690Sluigi O_IPID); 137798943Sluigi break; 137898943Sluigi 137998943Sluigi case O_IPTTL: 1380116690Sluigi if (F_LEN(cmd) == 1) 1381116690Sluigi printf(" ipttl %u", cmd->arg1 ); 1382116690Sluigi else 1383116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1384116690Sluigi O_IPTTL); 138598943Sluigi break; 138698943Sluigi 138798943Sluigi case O_IPVER: 138898943Sluigi printf(" ipver %u", cmd->arg1 ); 138998943Sluigi break; 139098943Sluigi 139199475Sluigi case O_IPPRECEDENCE: 139299475Sluigi printf(" ipprecedence %u", (cmd->arg1) >> 5 ); 139399475Sluigi break; 139499475Sluigi 139598943Sluigi case O_IPLEN: 1396116690Sluigi if (F_LEN(cmd) == 1) 1397116690Sluigi printf(" iplen %u", cmd->arg1 ); 1398116690Sluigi else 1399116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1400116690Sluigi O_IPLEN); 140198943Sluigi break; 140298943Sluigi 1403101116Sluigi case O_IPOPT: 140498943Sluigi print_flags("ipoptions", cmd, f_ipopts); 140598943Sluigi break; 140698943Sluigi 140799475Sluigi case O_IPTOS: 140899475Sluigi print_flags("iptos", cmd, f_iptos); 140999475Sluigi break; 141099475Sluigi 141199475Sluigi case O_ICMPTYPE: 141299475Sluigi print_icmptypes((ipfw_insn_u32 *)cmd); 141399475Sluigi break; 141499475Sluigi 141598943Sluigi case O_ESTAB: 141698943Sluigi printf(" established"); 141798943Sluigi break; 141898943Sluigi 1419136075Sgreen case O_TCPDATALEN: 1420136075Sgreen if (F_LEN(cmd) == 1) 1421136075Sgreen printf(" tcpdatalen %u", cmd->arg1 ); 1422136075Sgreen else 1423136075Sgreen print_newports((ipfw_insn_u16 *)cmd, 0, 1424136075Sgreen O_TCPDATALEN); 1425136075Sgreen break; 1426136075Sgreen 142798943Sluigi case O_TCPFLAGS: 142898943Sluigi print_flags("tcpflags", cmd, f_tcpflags); 142998943Sluigi break; 143098943Sluigi 143198943Sluigi case O_TCPOPTS: 143298943Sluigi print_flags("tcpoptions", cmd, f_tcpopts); 143398943Sluigi break; 143498943Sluigi 143598943Sluigi case O_TCPWIN: 143698943Sluigi printf(" tcpwin %d", ntohs(cmd->arg1)); 143798943Sluigi break; 143898943Sluigi 143998943Sluigi case O_TCPACK: 144098943Sluigi printf(" tcpack %d", ntohl(cmd32->d[0])); 144198943Sluigi break; 144298943Sluigi 144398943Sluigi case O_TCPSEQ: 144498943Sluigi printf(" tcpseq %d", ntohl(cmd32->d[0])); 144598943Sluigi break; 144698943Sluigi 144798943Sluigi case O_UID: 144898943Sluigi { 144998943Sluigi struct passwd *pwd = getpwuid(cmd32->d[0]); 145098943Sluigi 145198943Sluigi if (pwd) 145298943Sluigi printf(" uid %s", pwd->pw_name); 145398943Sluigi else 145498943Sluigi printf(" uid %u", cmd32->d[0]); 145598943Sluigi } 145698943Sluigi break; 145798943Sluigi 145898943Sluigi case O_GID: 145998943Sluigi { 146098943Sluigi struct group *grp = getgrgid(cmd32->d[0]); 146198943Sluigi 146298943Sluigi if (grp) 146398943Sluigi printf(" gid %s", grp->gr_name); 146498943Sluigi else 146598943Sluigi printf(" gid %u", cmd32->d[0]); 146698943Sluigi } 146798943Sluigi break; 146898943Sluigi 1469133600Scsjp case O_JAIL: 1470133600Scsjp printf(" jail %d", cmd32->d[0]); 1471133600Scsjp break; 1472133600Scsjp 1473112250Scjc case O_VERREVPATH: 1474112250Scjc printf(" verrevpath"); 1475112250Scjc break; 1476116919Sluigi 1477128575Sandre case O_VERSRCREACH: 1478128575Sandre printf(" versrcreach"); 1479128575Sandre break; 1480128575Sandre 1481133387Sandre case O_ANTISPOOF: 1482133387Sandre printf(" antispoof"); 1483133387Sandre break; 1484133387Sandre 1485117241Sluigi case O_IPSEC: 1486117241Sluigi printf(" ipsec"); 1487117241Sluigi break; 1488117241Sluigi 1489117469Sluigi case O_NOP: 1490117626Sluigi comment = (char *)(cmd + 1); 1491117469Sluigi break; 1492117469Sluigi 149398943Sluigi case O_KEEP_STATE: 149498943Sluigi printf(" keep-state"); 149598943Sluigi break; 149698943Sluigi 1497159636Soleg case O_LIMIT: { 149898943Sluigi struct _s_x *p = limit_masks; 149998943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 1500117328Sluigi uint8_t x = c->limit_mask; 1501117469Sluigi char const *comma = " "; 150298943Sluigi 150398943Sluigi printf(" limit"); 1504117577Sluigi for (; p->x != 0 ; p++) 150599909Sluigi if ((x & p->x) == p->x) { 150698943Sluigi x &= ~p->x; 150798943Sluigi printf("%s%s", comma, p->s); 150898943Sluigi comma = ","; 150998943Sluigi } 1510159636Soleg PRINT_UINT_ARG(" ", c->conn_limit); 151198943Sluigi break; 1512159636Soleg } 151398943Sluigi 1514146894Smlaier case O_IP6: 1515152923Sume printf(" ip6"); 1516145246Sbrooks break; 1517145246Sbrooks 1518146894Smlaier case O_IP4: 1519152923Sume printf(" ip4"); 1520146894Smlaier break; 1521146894Smlaier 1522145246Sbrooks case O_ICMP6TYPE: 1523145246Sbrooks print_icmp6types((ipfw_insn_u32 *)cmd); 1524145246Sbrooks break; 1525145246Sbrooks 1526145246Sbrooks case O_EXT_HDR: 1527145246Sbrooks print_ext6hdr( (ipfw_insn *) cmd ); 1528145246Sbrooks break; 1529145246Sbrooks 1530158879Soleg case O_TAGGED: 1531158879Soleg if (F_LEN(cmd) == 1) 1532159636Soleg PRINT_UINT_ARG(" tagged ", cmd->arg1); 1533158879Soleg else 1534159636Soleg print_newports((ipfw_insn_u16 *)cmd, 0, 1535159636Soleg O_TAGGED); 1536158879Soleg break; 1537158879Soleg 153898943Sluigi default: 153998943Sluigi printf(" [opcode %d len %d]", 154098943Sluigi cmd->opcode, cmd->len); 154198943Sluigi } 154298943Sluigi } 154398943Sluigi if (cmd->len & F_OR) { 154498943Sluigi printf(" or"); 154598943Sluigi or_block = 1; 154698943Sluigi } else if (or_block) { 154798943Sluigi printf(" }"); 154898943Sluigi or_block = 0; 154998943Sluigi } 155098943Sluigi } 1551102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 1552117626Sluigi if (comment) 1553117626Sluigi printf(" // %s", comment); 155498943Sluigi printf("\n"); 155598943Sluigi} 155698943Sluigi 155798943Sluigistatic void 1558112189Smaximshow_dyn_ipfw(ipfw_dyn_rule *d, int pcwidth, int bcwidth) 155998943Sluigi{ 156098943Sluigi struct protoent *pe; 156198943Sluigi struct in_addr a; 1562115793Sticso uint16_t rulenum; 1563159160Smlaier char buf[INET6_ADDRSTRLEN]; 156498943Sluigi 1565187764Sluigi if (!co.do_expired) { 156698943Sluigi if (!d->expire && !(d->dyn_type == O_LIMIT_PARENT)) 156798943Sluigi return; 156898943Sluigi } 1569115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 1570117328Sluigi printf("%05d", rulenum); 1571117469Sluigi if (pcwidth>0 || bcwidth>0) 1572117328Sluigi printf(" %*llu %*llu (%ds)", pcwidth, 1573117328Sluigi align_uint64(&d->pcnt), bcwidth, 1574117328Sluigi align_uint64(&d->bcnt), d->expire); 157598943Sluigi switch (d->dyn_type) { 157698943Sluigi case O_LIMIT_PARENT: 157798943Sluigi printf(" PARENT %d", d->count); 157898943Sluigi break; 157998943Sluigi case O_LIMIT: 158098943Sluigi printf(" LIMIT"); 158198943Sluigi break; 158298943Sluigi case O_KEEP_STATE: /* bidir, no mask */ 1583106505Smaxim printf(" STATE"); 158498943Sluigi break; 158598943Sluigi } 158698943Sluigi 158798943Sluigi if ((pe = getprotobynumber(d->id.proto)) != NULL) 158898943Sluigi printf(" %s", pe->p_name); 158998943Sluigi else 159098943Sluigi printf(" proto %u", d->id.proto); 159198943Sluigi 1592159160Smlaier if (d->id.addr_type == 4) { 1593159160Smlaier a.s_addr = htonl(d->id.src_ip); 1594159160Smlaier printf(" %s %d", inet_ntoa(a), d->id.src_port); 159598943Sluigi 1596159160Smlaier a.s_addr = htonl(d->id.dst_ip); 1597159160Smlaier printf(" <-> %s %d", inet_ntoa(a), d->id.dst_port); 1598159160Smlaier } else if (d->id.addr_type == 6) { 1599159160Smlaier printf(" %s %d", inet_ntop(AF_INET6, &d->id.src_ip6, buf, 1600159160Smlaier sizeof(buf)), d->id.src_port); 1601159160Smlaier printf(" <-> %s %d", inet_ntop(AF_INET6, &d->id.dst_ip6, buf, 1602159160Smlaier sizeof(buf)), d->id.dst_port); 1603159160Smlaier } else 1604159160Smlaier printf(" UNKNOWN <-> UNKNOWN\n"); 1605159160Smlaier 160698943Sluigi printf("\n"); 160798943Sluigi} 160898943Sluigi 1609101978Sluigi/* 1610101978Sluigi * This one handles all set-related commands 1611101978Sluigi * ipfw set { show | enable | disable } 1612101978Sluigi * ipfw set swap X Y 1613101978Sluigi * ipfw set move X to Y 1614101978Sluigi * ipfw set move rule X to Y 1615101978Sluigi */ 1616187767Sluigivoid 1617204591Sluigiipfw_sets_handler(char *av[]) 1618101978Sluigi{ 1619117328Sluigi uint32_t set_disable, masks[2]; 1620101978Sluigi int i, nbytes; 1621117328Sluigi uint16_t rulenum; 1622117328Sluigi uint8_t cmd, new_set; 1623101978Sluigi 1624101978Sluigi av++; 1625101978Sluigi 1626204591Sluigi if (av[0] == NULL) 1627101978Sluigi errx(EX_USAGE, "set needs command"); 1628140271Sbrooks if (_substrcmp(*av, "show") == 0) { 1629204717Sluigi void *data = NULL; 1630117469Sluigi char const *msg; 1631204717Sluigi int nalloc; 1632101978Sluigi 1633204717Sluigi nalloc = nbytes = sizeof(struct ip_fw); 1634204717Sluigi while (nbytes >= nalloc) { 1635204717Sluigi if (data) 1636204717Sluigi free(data); 1637204717Sluigi nalloc = nalloc * 2 + 200; 1638204717Sluigi nbytes = nalloc; 1639187716Sluigi data = safe_calloc(1, nbytes); 1640119740Stmm if (do_cmd(IP_FW_GET, data, (uintptr_t)&nbytes) < 0) 1641101978Sluigi err(EX_OSERR, "getsockopt(IP_FW_GET)"); 1642204717Sluigi } 1643204717Sluigi 1644115793Sticso bcopy(&((struct ip_fw *)data)->next_rule, 1645115793Sticso &set_disable, sizeof(set_disable)); 1646101978Sluigi 1647117655Sluigi for (i = 0, msg = "disable" ; i < RESVD_SET; i++) 1648117577Sluigi if ((set_disable & (1<<i))) { 1649101978Sluigi printf("%s %d", msg, i); 1650101978Sluigi msg = ""; 1651101978Sluigi } 1652101978Sluigi msg = (set_disable) ? " enable" : "enable"; 1653117655Sluigi for (i = 0; i < RESVD_SET; i++) 1654117577Sluigi if (!(set_disable & (1<<i))) { 1655101978Sluigi printf("%s %d", msg, i); 1656101978Sluigi msg = ""; 1657101978Sluigi } 1658101978Sluigi printf("\n"); 1659140271Sbrooks } else if (_substrcmp(*av, "swap") == 0) { 1660204591Sluigi av++; 1661204591Sluigi if ( av[0] == NULL || av[1] == NULL ) 1662101978Sluigi errx(EX_USAGE, "set swap needs 2 set numbers\n"); 1663101978Sluigi rulenum = atoi(av[0]); 1664101978Sluigi new_set = atoi(av[1]); 1665117655Sluigi if (!isdigit(*(av[0])) || rulenum > RESVD_SET) 1666101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[0]); 1667117655Sluigi if (!isdigit(*(av[1])) || new_set > RESVD_SET) 1668101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[1]); 1669101978Sluigi masks[0] = (4 << 24) | (new_set << 16) | (rulenum); 1670117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(uint32_t)); 1671140271Sbrooks } else if (_substrcmp(*av, "move") == 0) { 1672204591Sluigi av++; 1673204717Sluigi if (av[0] && _substrcmp(*av, "rule") == 0) { 1674101978Sluigi cmd = 2; 1675204591Sluigi av++; 1676101978Sluigi } else 1677101978Sluigi cmd = 3; 1678204591Sluigi if (av[0] == NULL || av[1] == NULL || av[2] == NULL || 1679204591Sluigi av[3] != NULL || _substrcmp(av[1], "to") != 0) 1680101978Sluigi errx(EX_USAGE, "syntax: set move [rule] X to Y\n"); 1681101978Sluigi rulenum = atoi(av[0]); 1682101978Sluigi new_set = atoi(av[2]); 1683117655Sluigi if (!isdigit(*(av[0])) || (cmd == 3 && rulenum > RESVD_SET) || 1684182823Srik (cmd == 2 && rulenum == IPFW_DEFAULT_RULE) ) 1685101978Sluigi errx(EX_DATAERR, "invalid source number %s\n", av[0]); 1686117655Sluigi if (!isdigit(*(av[2])) || new_set > RESVD_SET) 1687101978Sluigi errx(EX_DATAERR, "invalid dest. set %s\n", av[1]); 1688101978Sluigi masks[0] = (cmd << 24) | (new_set << 16) | (rulenum); 1689117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(uint32_t)); 1690140271Sbrooks } else if (_substrcmp(*av, "disable") == 0 || 1691140271Sbrooks _substrcmp(*av, "enable") == 0 ) { 1692140271Sbrooks int which = _substrcmp(*av, "enable") == 0 ? 1 : 0; 1693101978Sluigi 1694204591Sluigi av++; 1695101978Sluigi masks[0] = masks[1] = 0; 1696101978Sluigi 1697204717Sluigi while (av[0]) { 1698101978Sluigi if (isdigit(**av)) { 1699101978Sluigi i = atoi(*av); 1700117655Sluigi if (i < 0 || i > RESVD_SET) 1701101978Sluigi errx(EX_DATAERR, 1702101978Sluigi "invalid set number %d\n", i); 1703101978Sluigi masks[which] |= (1<<i); 1704140271Sbrooks } else if (_substrcmp(*av, "disable") == 0) 1705101978Sluigi which = 0; 1706140271Sbrooks else if (_substrcmp(*av, "enable") == 0) 1707101978Sluigi which = 1; 1708101978Sluigi else 1709101978Sluigi errx(EX_DATAERR, 1710101978Sluigi "invalid set command %s\n", *av); 1711204591Sluigi av++; 1712101978Sluigi } 1713101978Sluigi if ( (masks[0] & masks[1]) != 0 ) 1714101978Sluigi errx(EX_DATAERR, 1715101978Sluigi "cannot enable and disable the same set\n"); 1716101978Sluigi 1717117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(masks)); 1718101978Sluigi if (i) 1719101978Sluigi warn("set enable/disable: setsockopt(IP_FW_DEL)"); 1720101978Sluigi } else 1721101978Sluigi errx(EX_USAGE, "invalid set command %s\n", *av); 1722101978Sluigi} 1723101978Sluigi 1724187767Sluigivoid 1725204591Sluigiipfw_sysctl_handler(char *av[], int which) 1726109126Sdillon{ 1727109126Sdillon av++; 1728109126Sdillon 1729204591Sluigi if (av[0] == NULL) { 1730109126Sdillon warnx("missing keyword to enable/disable\n"); 1731140271Sbrooks } else if (_substrcmp(*av, "firewall") == 0) { 1732116770Sluigi sysctlbyname("net.inet.ip.fw.enable", NULL, 0, 1733116770Sluigi &which, sizeof(which)); 1734140271Sbrooks } else if (_substrcmp(*av, "one_pass") == 0) { 1735116770Sluigi sysctlbyname("net.inet.ip.fw.one_pass", NULL, 0, 1736116770Sluigi &which, sizeof(which)); 1737140271Sbrooks } else if (_substrcmp(*av, "debug") == 0) { 1738116770Sluigi sysctlbyname("net.inet.ip.fw.debug", NULL, 0, 1739116770Sluigi &which, sizeof(which)); 1740140271Sbrooks } else if (_substrcmp(*av, "verbose") == 0) { 1741116770Sluigi sysctlbyname("net.inet.ip.fw.verbose", NULL, 0, 1742116770Sluigi &which, sizeof(which)); 1743140271Sbrooks } else if (_substrcmp(*av, "dyn_keepalive") == 0) { 1744116770Sluigi sysctlbyname("net.inet.ip.fw.dyn_keepalive", NULL, 0, 1745116770Sluigi &which, sizeof(which)); 1746204591Sluigi#ifndef NO_ALTQ 1747140271Sbrooks } else if (_substrcmp(*av, "altq") == 0) { 1748136071Sgreen altq_set_enabled(which); 1749204591Sluigi#endif 1750109126Sdillon } else { 1751109126Sdillon warnx("unrecognize enable/disable keyword: %s\n", *av); 1752109126Sdillon } 1753109126Sdillon} 1754109126Sdillon 1755187767Sluigivoid 1756187767Sluigiipfw_list(int ac, char *av[], int show_counters) 175798943Sluigi{ 175898943Sluigi struct ip_fw *r; 175998943Sluigi ipfw_dyn_rule *dynrules, *d; 176098943Sluigi 1761117469Sluigi#define NEXT(r) ((struct ip_fw *)((char *)r + RULESIZE(r))) 1762117469Sluigi char *lim; 1763117469Sluigi void *data = NULL; 1764112189Smaxim int bcwidth, n, nbytes, nstat, ndyn, pcwidth, width; 176598943Sluigi int exitval = EX_OK; 176698943Sluigi int lac; 176798943Sluigi char **lav; 1768117469Sluigi u_long rnum, last; 176998943Sluigi char *endptr; 177098943Sluigi int seen = 0; 1771170923Smaxim uint8_t set; 177298943Sluigi 1773187764Sluigi const int ocmd = co.do_pipe ? IP_DUMMYNET_GET : IP_FW_GET; 177498943Sluigi int nalloc = 1024; /* start somewhere... */ 177598943Sluigi 1776135036Smaxim last = 0; 1777135036Smaxim 1778187764Sluigi if (co.test_only) { 1779117328Sluigi fprintf(stderr, "Testing only, list disabled\n"); 1780117328Sluigi return; 1781117328Sluigi } 1782204591Sluigi if (co.do_pipe) { 1783204591Sluigi dummynet_list(ac, av, show_counters); 1784204591Sluigi return; 1785204591Sluigi } 1786117328Sluigi 178798943Sluigi ac--; 178898943Sluigi av++; 178998943Sluigi 179098943Sluigi /* get rules or pipes from kernel, resizing array as necessary */ 179198943Sluigi nbytes = nalloc; 179298943Sluigi 179398943Sluigi while (nbytes >= nalloc) { 179498943Sluigi nalloc = nalloc * 2 + 200; 179598943Sluigi nbytes = nalloc; 1796187716Sluigi data = safe_realloc(data, nbytes); 1797119740Stmm if (do_cmd(ocmd, data, (uintptr_t)&nbytes) < 0) 179898943Sluigi err(EX_OSERR, "getsockopt(IP_%s_GET)", 1799187764Sluigi co.do_pipe ? "DUMMYNET" : "FW"); 180098943Sluigi } 180198943Sluigi 180298943Sluigi /* 180398943Sluigi * Count static rules. They have variable size so we 180498943Sluigi * need to scan the list to count them. 180598943Sluigi */ 1806117469Sluigi for (nstat = 1, r = data, lim = (char *)data + nbytes; 1807182823Srik r->rulenum < IPFW_DEFAULT_RULE && (char *)r < lim; 1808117469Sluigi ++nstat, r = NEXT(r) ) 180998943Sluigi ; /* nothing */ 181098943Sluigi 181198943Sluigi /* 181298943Sluigi * Count dynamic rules. This is easier as they have 181398943Sluigi * fixed size. 181498943Sluigi */ 1815117469Sluigi r = NEXT(r); 181698943Sluigi dynrules = (ipfw_dyn_rule *)r ; 1817117469Sluigi n = (char *)r - (char *)data; 181898943Sluigi ndyn = (nbytes - n) / sizeof *dynrules; 181998943Sluigi 1820112189Smaxim /* if showing stats, figure out column widths ahead of time */ 1821112189Smaxim bcwidth = pcwidth = 0; 1822117469Sluigi if (show_counters) { 1823117469Sluigi for (n = 0, r = data; n < nstat; n++, r = NEXT(r)) { 1824170923Smaxim /* skip rules from another set */ 1825187764Sluigi if (co.use_set && r->set != co.use_set - 1) 1826170923Smaxim continue; 1827170923Smaxim 1828112189Smaxim /* packet counter */ 1829115793Sticso width = snprintf(NULL, 0, "%llu", 1830115793Sticso align_uint64(&r->pcnt)); 1831112189Smaxim if (width > pcwidth) 1832112189Smaxim pcwidth = width; 1833112189Smaxim 1834112189Smaxim /* byte counter */ 1835115793Sticso width = snprintf(NULL, 0, "%llu", 1836115793Sticso align_uint64(&r->bcnt)); 1837112189Smaxim if (width > bcwidth) 1838112189Smaxim bcwidth = width; 1839112189Smaxim } 1840112189Smaxim } 1841187764Sluigi if (co.do_dynamic && ndyn) { 1842112189Smaxim for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1843187764Sluigi if (co.use_set) { 1844170923Smaxim /* skip rules from another set */ 1845171989Smaxim bcopy((char *)&d->rule + sizeof(uint16_t), 1846170923Smaxim &set, sizeof(uint8_t)); 1847187764Sluigi if (set != co.use_set - 1) 1848170923Smaxim continue; 1849170923Smaxim } 1850115793Sticso width = snprintf(NULL, 0, "%llu", 1851115793Sticso align_uint64(&d->pcnt)); 1852112189Smaxim if (width > pcwidth) 1853112189Smaxim pcwidth = width; 1854112189Smaxim 1855115793Sticso width = snprintf(NULL, 0, "%llu", 1856115793Sticso align_uint64(&d->bcnt)); 1857112189Smaxim if (width > bcwidth) 1858112189Smaxim bcwidth = width; 1859112189Smaxim } 1860112189Smaxim } 186198943Sluigi /* if no rule numbers were specified, list all rules */ 186298943Sluigi if (ac == 0) { 1863170923Smaxim for (n = 0, r = data; n < nstat; n++, r = NEXT(r)) { 1864187764Sluigi if (co.use_set && r->set != co.use_set - 1) 1865170923Smaxim continue; 1866112189Smaxim show_ipfw(r, pcwidth, bcwidth); 1867170923Smaxim } 186898943Sluigi 1869187764Sluigi if (co.do_dynamic && ndyn) { 187098943Sluigi printf("## Dynamic rules (%d):\n", ndyn); 1871170923Smaxim for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1872187764Sluigi if (co.use_set) { 1873171989Smaxim bcopy((char *)&d->rule + sizeof(uint16_t), 1874170923Smaxim &set, sizeof(uint8_t)); 1875187764Sluigi if (set != co.use_set - 1) 1876170923Smaxim continue; 1877170923Smaxim } 1878112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 187998943Sluigi } 1880170923Smaxim } 188198943Sluigi goto done; 188298943Sluigi } 188398943Sluigi 188498943Sluigi /* display specific rules requested on command line */ 188598943Sluigi 188698943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 188798943Sluigi /* convert command line rule # */ 1888117469Sluigi last = rnum = strtoul(*lav++, &endptr, 10); 1889117469Sluigi if (*endptr == '-') 1890117469Sluigi last = strtoul(endptr+1, &endptr, 10); 189198943Sluigi if (*endptr) { 189298943Sluigi exitval = EX_USAGE; 189398943Sluigi warnx("invalid rule number: %s", *(lav - 1)); 189498943Sluigi continue; 189598943Sluigi } 1896117469Sluigi for (n = seen = 0, r = data; n < nstat; n++, r = NEXT(r) ) { 1897117469Sluigi if (r->rulenum > last) 189898943Sluigi break; 1899187764Sluigi if (co.use_set && r->set != co.use_set - 1) 1900170923Smaxim continue; 1901117469Sluigi if (r->rulenum >= rnum && r->rulenum <= last) { 1902112189Smaxim show_ipfw(r, pcwidth, bcwidth); 190398943Sluigi seen = 1; 190498943Sluigi } 190598943Sluigi } 190698943Sluigi if (!seen) { 190798943Sluigi /* give precedence to other error(s) */ 190898943Sluigi if (exitval == EX_OK) 190998943Sluigi exitval = EX_UNAVAILABLE; 191098943Sluigi warnx("rule %lu does not exist", rnum); 191198943Sluigi } 191298943Sluigi } 191398943Sluigi 1914187764Sluigi if (co.do_dynamic && ndyn) { 191598943Sluigi printf("## Dynamic rules:\n"); 191698943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 1917145246Sbrooks last = rnum = strtoul(*lav++, &endptr, 10); 1918117469Sluigi if (*endptr == '-') 1919117469Sluigi last = strtoul(endptr+1, &endptr, 10); 192098943Sluigi if (*endptr) 192198943Sluigi /* already warned */ 192298943Sluigi continue; 192398943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1924115793Sticso uint16_t rulenum; 1925115793Sticso 1926115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 1927115793Sticso if (rulenum > rnum) 192898943Sluigi break; 1929187764Sluigi if (co.use_set) { 1930171989Smaxim bcopy((char *)&d->rule + sizeof(uint16_t), 1931170923Smaxim &set, sizeof(uint8_t)); 1932187764Sluigi if (set != co.use_set - 1) 1933170923Smaxim continue; 1934170923Smaxim } 1935117469Sluigi if (r->rulenum >= rnum && r->rulenum <= last) 1936112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 193798943Sluigi } 193898943Sluigi } 193998943Sluigi } 194098943Sluigi 194198943Sluigi ac = 0; 194298943Sluigi 194398943Sluigidone: 194498943Sluigi free(data); 194598943Sluigi 194698943Sluigi if (exitval != EX_OK) 194798943Sluigi exit(exitval); 1948117469Sluigi#undef NEXT 194998943Sluigi} 195098943Sluigi 195198943Sluigistatic int 195298943Sluigilookup_host (char *host, struct in_addr *ipaddr) 195398943Sluigi{ 195498943Sluigi struct hostent *he; 195598943Sluigi 195698943Sluigi if (!inet_aton(host, ipaddr)) { 195798943Sluigi if ((he = gethostbyname(host)) == NULL) 195898943Sluigi return(-1); 195998943Sluigi *ipaddr = *(struct in_addr *)he->h_addr_list[0]; 196098943Sluigi } 196198943Sluigi return(0); 196298943Sluigi} 196398943Sluigi 196498943Sluigi/* 196598943Sluigi * fills the addr and mask fields in the instruction as appropriate from av. 196698943Sluigi * Update length as appropriate. 196798943Sluigi * The following formats are allowed: 196898943Sluigi * me returns O_IP_*_ME 196998943Sluigi * 1.2.3.4 single IP address 197098943Sluigi * 1.2.3.4:5.6.7.8 address:mask 197198943Sluigi * 1.2.3.4/24 address/mask 197298943Sluigi * 1.2.3.4/26{1,6,5,4,23} set of addresses in a subnet 1973117328Sluigi * We can have multiple comma-separated address/mask entries. 197498943Sluigi */ 197598943Sluigistatic void 197698943Sluigifill_ip(ipfw_insn_ip *cmd, char *av) 197798943Sluigi{ 1978117328Sluigi int len = 0; 1979117328Sluigi uint32_t *d = ((ipfw_insn_u32 *)cmd)->d; 198098943Sluigi 198198943Sluigi cmd->o.len &= ~F_LEN_MASK; /* zero len */ 198298943Sluigi 1983140271Sbrooks if (_substrcmp(av, "any") == 0) 198498943Sluigi return; 198598943Sluigi 1986140271Sbrooks if (_substrcmp(av, "me") == 0) { 198798943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn); 198898943Sluigi return; 198998943Sluigi } 199098943Sluigi 1991140271Sbrooks if (strncmp(av, "table(", 6) == 0) { 1992130281Sru char *p = strchr(av + 6, ','); 1993130281Sru 1994130281Sru if (p) 1995130281Sru *p++ = '\0'; 1996130281Sru cmd->o.opcode = O_IP_DST_LOOKUP; 1997130281Sru cmd->o.arg1 = strtoul(av + 6, NULL, 0); 1998130281Sru if (p) { 1999130281Sru cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 2000130281Sru d[0] = strtoul(p, NULL, 0); 2001130281Sru } else 2002130281Sru cmd->o.len |= F_INSN_SIZE(ipfw_insn); 2003130281Sru return; 2004130281Sru } 2005130281Sru 2006117328Sluigi while (av) { 2007117328Sluigi /* 2008117328Sluigi * After the address we can have '/' or ':' indicating a mask, 2009117328Sluigi * ',' indicating another address follows, '{' indicating a 2010117328Sluigi * set of addresses of unspecified size. 2011117328Sluigi */ 2012165851Smlaier char *t = NULL, *p = strpbrk(av, "/:,{"); 2013117328Sluigi int masklen; 2014187477Sluigi char md, nd = '\0'; 2015117328Sluigi 201698943Sluigi if (p) { 201798943Sluigi md = *p; 201898943Sluigi *p++ = '\0'; 2019165851Smlaier if ((t = strpbrk(p, ",{")) != NULL) { 2020165851Smlaier nd = *t; 2021165851Smlaier *t = '\0'; 2022165851Smlaier } 2023117328Sluigi } else 2024117328Sluigi md = '\0'; 202598943Sluigi 2026117328Sluigi if (lookup_host(av, (struct in_addr *)&d[0]) != 0) 202798943Sluigi errx(EX_NOHOST, "hostname ``%s'' unknown", av); 202898943Sluigi switch (md) { 202998943Sluigi case ':': 2030117328Sluigi if (!inet_aton(p, (struct in_addr *)&d[1])) 203198943Sluigi errx(EX_DATAERR, "bad netmask ``%s''", p); 203298943Sluigi break; 203398943Sluigi case '/': 2034117328Sluigi masklen = atoi(p); 2035117328Sluigi if (masklen == 0) 2036117328Sluigi d[1] = htonl(0); /* mask */ 2037117328Sluigi else if (masklen > 32) 203898943Sluigi errx(EX_DATAERR, "bad width ``%s''", p); 203998943Sluigi else 2040117328Sluigi d[1] = htonl(~0 << (32 - masklen)); 204198943Sluigi break; 2042117328Sluigi case '{': /* no mask, assume /24 and put back the '{' */ 2043117328Sluigi d[1] = htonl(~0 << (32 - 24)); 2044117328Sluigi *(--p) = md; 2045117328Sluigi break; 2046117328Sluigi 2047117328Sluigi case ',': /* single address plus continuation */ 2048117328Sluigi *(--p) = md; 2049117328Sluigi /* FALLTHROUGH */ 2050117328Sluigi case 0: /* initialization value */ 205198943Sluigi default: 2052117328Sluigi d[1] = htonl(~0); /* force /32 */ 205398943Sluigi break; 205498943Sluigi } 2055117328Sluigi d[0] &= d[1]; /* mask base address with mask */ 2056165851Smlaier if (t) 2057165851Smlaier *t = nd; 2058117328Sluigi /* find next separator */ 205998943Sluigi if (p) 2060117328Sluigi p = strpbrk(p, ",{"); 2061117328Sluigi if (p && *p == '{') { 2062117328Sluigi /* 2063117328Sluigi * We have a set of addresses. They are stored as follows: 2064117328Sluigi * arg1 is the set size (powers of 2, 2..256) 2065117328Sluigi * addr is the base address IN HOST FORMAT 2066117328Sluigi * mask.. is an array of arg1 bits (rounded up to 2067117328Sluigi * the next multiple of 32) with bits set 2068117328Sluigi * for each host in the map. 2069117328Sluigi */ 2070117328Sluigi uint32_t *map = (uint32_t *)&cmd->mask; 207198943Sluigi int low, high; 2072117577Sluigi int i = contigmask((uint8_t *)&(d[1]), 32); 207398943Sluigi 2074117328Sluigi if (len > 0) 2075117328Sluigi errx(EX_DATAERR, "address set cannot be in a list"); 2076117328Sluigi if (i < 24 || i > 31) 2077117328Sluigi errx(EX_DATAERR, "invalid set with mask %d\n", i); 2078117328Sluigi cmd->o.arg1 = 1<<(32-i); /* map length */ 2079117328Sluigi d[0] = ntohl(d[0]); /* base addr in host format */ 208098943Sluigi cmd->o.opcode = O_IP_DST_SET; /* default */ 208198943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32) + (cmd->o.arg1+31)/32; 2082101117Sluigi for (i = 0; i < (cmd->o.arg1+31)/32 ; i++) 2083117328Sluigi map[i] = 0; /* clear map */ 208498943Sluigi 2085117328Sluigi av = p + 1; 2086117328Sluigi low = d[0] & 0xff; 208798943Sluigi high = low + cmd->o.arg1 - 1; 2088117328Sluigi /* 2089117328Sluigi * Here, i stores the previous value when we specify a range 2090117328Sluigi * of addresses within a mask, e.g. 45-63. i = -1 means we 2091117328Sluigi * have no previous value. 2092117328Sluigi */ 2093116716Sluigi i = -1; /* previous value in a range */ 209498943Sluigi while (isdigit(*av)) { 209598943Sluigi char *s; 2096117328Sluigi int a = strtol(av, &s, 0); 209798943Sluigi 2098117328Sluigi if (s == av) { /* no parameter */ 2099117328Sluigi if (*av != '}') 2100117328Sluigi errx(EX_DATAERR, "set not closed\n"); 2101117328Sluigi if (i != -1) 2102117328Sluigi errx(EX_DATAERR, "incomplete range %d-", i); 2103117328Sluigi break; 2104117328Sluigi } 2105117328Sluigi if (a < low || a > high) 2106117328Sluigi errx(EX_DATAERR, "addr %d out of range [%d-%d]\n", 210798943Sluigi a, low, high); 210898943Sluigi a -= low; 2109116716Sluigi if (i == -1) /* no previous in range */ 2110116716Sluigi i = a; 2111116716Sluigi else { /* check that range is valid */ 2112116716Sluigi if (i > a) 2113116716Sluigi errx(EX_DATAERR, "invalid range %d-%d", 2114116716Sluigi i+low, a+low); 2115116716Sluigi if (*s == '-') 2116116716Sluigi errx(EX_DATAERR, "double '-' in range"); 2117116716Sluigi } 2118116716Sluigi for (; i <= a; i++) 2119117328Sluigi map[i/32] |= 1<<(i & 31); 2120116716Sluigi i = -1; 2121116716Sluigi if (*s == '-') 2122116716Sluigi i = a; 2123117328Sluigi else if (*s == '}') 2124116716Sluigi break; 212598943Sluigi av = s+1; 212698943Sluigi } 212798943Sluigi return; 212898943Sluigi } 2129117328Sluigi av = p; 2130117328Sluigi if (av) /* then *av must be a ',' */ 2131117328Sluigi av++; 213298943Sluigi 2133117328Sluigi /* Check this entry */ 2134117328Sluigi if (d[1] == 0) { /* "any", specified as x.x.x.x/0 */ 2135117328Sluigi /* 2136117328Sluigi * 'any' turns the entire list into a NOP. 2137117328Sluigi * 'not any' never matches, so it is removed from the 2138117328Sluigi * list unless it is the only item, in which case we 2139117328Sluigi * report an error. 2140117328Sluigi */ 2141117328Sluigi if (cmd->o.len & F_NOT) { /* "not any" never matches */ 2142117328Sluigi if (av == NULL && len == 0) /* only this entry */ 2143117328Sluigi errx(EX_DATAERR, "not any never matches"); 2144117328Sluigi } 2145117328Sluigi /* else do nothing and skip this entry */ 2146128067Smaxim return; 2147117328Sluigi } 2148117328Sluigi /* A single IP can be stored in an optimized format */ 2149204591Sluigi if (d[1] == (uint32_t)~0 && av == NULL && len == 0) { 215098943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 2151117328Sluigi return; 2152117328Sluigi } 2153117328Sluigi len += 2; /* two words... */ 2154117328Sluigi d += 2; 2155117328Sluigi } /* end while */ 2156162363Sjhay if (len + 1 > F_LEN_MASK) 2157162363Sjhay errx(EX_DATAERR, "address list too long"); 2158117328Sluigi cmd->o.len |= len+1; 215998943Sluigi} 216098943Sluigi 216198943Sluigi 2162145246Sbrooks/* n2mask sets n bits of the mask */ 2163187769Sluigivoid 2164145246Sbrooksn2mask(struct in6_addr *mask, int n) 2165145246Sbrooks{ 2166145246Sbrooks static int minimask[9] = 2167145246Sbrooks { 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff }; 2168145246Sbrooks u_char *p; 2169145246Sbrooks 2170145246Sbrooks memset(mask, 0, sizeof(struct in6_addr)); 2171145246Sbrooks p = (u_char *) mask; 2172145246Sbrooks for (; n > 0; p++, n -= 8) { 2173145246Sbrooks if (n >= 8) 2174145246Sbrooks *p = 0xff; 2175145246Sbrooks else 2176145246Sbrooks *p = minimask[n]; 2177145246Sbrooks } 2178145246Sbrooks return; 2179145246Sbrooks} 2180145246Sbrooks 2181145246Sbrooks 218298943Sluigi/* 218398943Sluigi * helper function to process a set of flags and set bits in the 218498943Sluigi * appropriate masks. 218598943Sluigi */ 218698943Sluigistatic void 218798943Sluigifill_flags(ipfw_insn *cmd, enum ipfw_opcodes opcode, 218898943Sluigi struct _s_x *flags, char *p) 218998943Sluigi{ 2190117328Sluigi uint8_t set=0, clear=0; 219198943Sluigi 219298943Sluigi while (p && *p) { 219398943Sluigi char *q; /* points to the separator */ 219498943Sluigi int val; 2195117328Sluigi uint8_t *which; /* mask we are working on */ 219698943Sluigi 219798943Sluigi if (*p == '!') { 219898943Sluigi p++; 219998943Sluigi which = &clear; 220098943Sluigi } else 220198943Sluigi which = &set; 220298943Sluigi q = strchr(p, ','); 220398943Sluigi if (q) 220498943Sluigi *q++ = '\0'; 220598943Sluigi val = match_token(flags, p); 220698943Sluigi if (val <= 0) 220798943Sluigi errx(EX_DATAERR, "invalid flag %s", p); 2208117328Sluigi *which |= (uint8_t)val; 220998943Sluigi p = q; 221098943Sluigi } 221198943Sluigi cmd->opcode = opcode; 221298943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | 1; 221398943Sluigi cmd->arg1 = (set & 0xff) | ( (clear & 0xff) << 8); 221498943Sluigi} 221598943Sluigi 221698943Sluigi 2217187767Sluigivoid 2218204591Sluigiipfw_delete(char *av[]) 221998943Sluigi{ 2220117328Sluigi uint32_t rulenum; 222198943Sluigi int i; 222298943Sluigi int exitval = EX_OK; 2223101628Sluigi int do_set = 0; 222498943Sluigi 2225204591Sluigi av++; 2226130013Scsjp NEED1("missing rule specification"); 2227204591Sluigi if ( *av && _substrcmp(*av, "set") == 0) { 2228170923Smaxim /* Do not allow using the following syntax: 2229170923Smaxim * ipfw set N delete set M 2230170923Smaxim */ 2231187764Sluigi if (co.use_set) 2232170923Smaxim errx(EX_DATAERR, "invalid syntax"); 2233101978Sluigi do_set = 1; /* delete set */ 2234204591Sluigi av++; 2235101978Sluigi } 223698943Sluigi 223798943Sluigi /* Rule number */ 2238204591Sluigi while (*av && isdigit(**av)) { 2239204591Sluigi i = atoi(*av); av++; 2240187764Sluigi if (co.do_nat) { 2241165648Spiso exitval = do_cmd(IP_FW_NAT_DEL, &i, sizeof i); 2242165648Spiso if (exitval) { 2243165648Spiso exitval = EX_UNAVAILABLE; 2244165648Spiso warn("rule %u not available", i); 2245165648Spiso } 2246187764Sluigi } else if (co.do_pipe) { 2247187769Sluigi exitval = ipfw_delete_pipe(co.do_pipe, i); 224898943Sluigi } else { 2249187764Sluigi if (co.use_set) 2250170923Smaxim rulenum = (i & 0xffff) | (5 << 24) | 2251187764Sluigi ((co.use_set - 1) << 16); 2252170923Smaxim else 2253101978Sluigi rulenum = (i & 0xffff) | (do_set << 24); 2254117328Sluigi i = do_cmd(IP_FW_DEL, &rulenum, sizeof rulenum); 225598943Sluigi if (i) { 225698943Sluigi exitval = EX_UNAVAILABLE; 225798943Sluigi warn("rule %u: setsockopt(IP_FW_DEL)", 225898943Sluigi rulenum); 225998943Sluigi } 226098943Sluigi } 226198943Sluigi } 226298943Sluigi if (exitval != EX_OK) 226398943Sluigi exit(exitval); 226498943Sluigi} 226598943Sluigi 226698943Sluigi 226798943Sluigi/* 226898943Sluigi * fill the interface structure. We do not check the name as we can 226998943Sluigi * create interfaces dynamically, so checking them at insert time 227098943Sluigi * makes relatively little sense. 2271121816Sbrooks * Interface names containing '*', '?', or '[' are assumed to be shell 2272121816Sbrooks * patterns which match interfaces. 227398943Sluigi */ 227498943Sluigistatic void 227598943Sluigifill_iface(ipfw_insn_if *cmd, char *arg) 227698943Sluigi{ 227798943Sluigi cmd->name[0] = '\0'; 227898943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_if); 227998943Sluigi 228098943Sluigi /* Parse the interface or address */ 2281140271Sbrooks if (strcmp(arg, "any") == 0) 228298943Sluigi cmd->o.len = 0; /* effectively ignore this command */ 228398943Sluigi else if (!isdigit(*arg)) { 2284121816Sbrooks strlcpy(cmd->name, arg, sizeof(cmd->name)); 2285121816Sbrooks cmd->p.glob = strpbrk(arg, "*?[") != NULL ? 1 : 0; 228698943Sluigi } else if (!inet_aton(arg, &cmd->p.ip)) 228798943Sluigi errx(EX_DATAERR, "bad ip address ``%s''", arg); 228898943Sluigi} 228998943Sluigi 229098943Sluigistatic void 2291169424Smaximget_mac_addr_mask(const char *p, uint8_t *addr, uint8_t *mask) 229298943Sluigi{ 2293204591Sluigi int i; 2294204591Sluigi size_t l; 2295169424Smaxim char *ap, *ptr, *optr; 2296169424Smaxim struct ether_addr *mac; 2297169424Smaxim const char *macset = "0123456789abcdefABCDEF:"; 229898943Sluigi 2299169424Smaxim if (strcmp(p, "any") == 0) { 2300169424Smaxim for (i = 0; i < ETHER_ADDR_LEN; i++) 2301169424Smaxim addr[i] = mask[i] = 0; 230298943Sluigi return; 2303169424Smaxim } 230498943Sluigi 2305169424Smaxim optr = ptr = strdup(p); 2306169424Smaxim if ((ap = strsep(&ptr, "&/")) != NULL && *ap != 0) { 2307169424Smaxim l = strlen(ap); 2308169424Smaxim if (strspn(ap, macset) != l || (mac = ether_aton(ap)) == NULL) 2309169424Smaxim errx(EX_DATAERR, "Incorrect MAC address"); 2310169424Smaxim bcopy(mac, addr, ETHER_ADDR_LEN); 2311169424Smaxim } else 2312169424Smaxim errx(EX_DATAERR, "Incorrect MAC address"); 2313169424Smaxim 2314169424Smaxim if (ptr != NULL) { /* we have mask? */ 2315169424Smaxim if (p[ptr - optr - 1] == '/') { /* mask len */ 2316204591Sluigi long ml = strtol(ptr, &ap, 10); 2317204591Sluigi if (*ap != 0 || ml > ETHER_ADDR_LEN * 8 || ml < 0) 2318169424Smaxim errx(EX_DATAERR, "Incorrect mask length"); 2319204591Sluigi for (i = 0; ml > 0 && i < ETHER_ADDR_LEN; ml -= 8, i++) 2320204591Sluigi mask[i] = (ml >= 8) ? 0xff: (~0) << (8 - ml); 2321169424Smaxim } else { /* mask */ 2322169424Smaxim l = strlen(ptr); 2323169424Smaxim if (strspn(ptr, macset) != l || 2324169424Smaxim (mac = ether_aton(ptr)) == NULL) 2325169424Smaxim errx(EX_DATAERR, "Incorrect mask"); 2326169424Smaxim bcopy(mac, mask, ETHER_ADDR_LEN); 232798943Sluigi } 2328169424Smaxim } else { /* default mask: ff:ff:ff:ff:ff:ff */ 2329169424Smaxim for (i = 0; i < ETHER_ADDR_LEN; i++) 233098943Sluigi mask[i] = 0xff; 233198943Sluigi } 2332169424Smaxim for (i = 0; i < ETHER_ADDR_LEN; i++) 233398943Sluigi addr[i] &= mask[i]; 2334169424Smaxim 2335169424Smaxim free(optr); 233698943Sluigi} 233798943Sluigi 233898943Sluigi/* 233998943Sluigi * helper function, updates the pointer to cmd with the length 234098943Sluigi * of the current command, and also cleans up the first word of 234198943Sluigi * the new command in case it has been clobbered before. 234298943Sluigi */ 234398943Sluigistatic ipfw_insn * 234498943Sluiginext_cmd(ipfw_insn *cmd) 234598943Sluigi{ 234698943Sluigi cmd += F_LEN(cmd); 234798943Sluigi bzero(cmd, sizeof(*cmd)); 234898943Sluigi return cmd; 234998943Sluigi} 235098943Sluigi 235198943Sluigi/* 2352117469Sluigi * Takes arguments and copies them into a comment 2353117469Sluigi */ 2354117469Sluigistatic void 2355204591Sluigifill_comment(ipfw_insn *cmd, char **av) 2356117469Sluigi{ 2357117469Sluigi int i, l; 2358117469Sluigi char *p = (char *)(cmd + 1); 2359117577Sluigi 2360117469Sluigi cmd->opcode = O_NOP; 2361117469Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)); 2362117469Sluigi 2363117469Sluigi /* Compute length of comment string. */ 2364204591Sluigi for (i = 0, l = 0; av[i] != NULL; i++) 2365117469Sluigi l += strlen(av[i]) + 1; 2366117469Sluigi if (l == 0) 2367117469Sluigi return; 2368117469Sluigi if (l > 84) 2369117469Sluigi errx(EX_DATAERR, 2370117469Sluigi "comment too long (max 80 chars)"); 2371117469Sluigi l = 1 + (l+3)/4; 2372117469Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | l; 2373204591Sluigi for (i = 0; av[i] != NULL; i++) { 2374117469Sluigi strcpy(p, av[i]); 2375117469Sluigi p += strlen(av[i]); 2376117469Sluigi *p++ = ' '; 2377117469Sluigi } 2378117469Sluigi *(--p) = '\0'; 2379117469Sluigi} 2380117577Sluigi 2381117469Sluigi/* 238298943Sluigi * A function to fill simple commands of size 1. 238398943Sluigi * Existing flags are preserved. 238498943Sluigi */ 238598943Sluigistatic void 2386117328Sluigifill_cmd(ipfw_insn *cmd, enum ipfw_opcodes opcode, int flags, uint16_t arg) 238798943Sluigi{ 238898943Sluigi cmd->opcode = opcode; 238998943Sluigi cmd->len = ((cmd->len | flags) & (F_NOT | F_OR)) | 1; 239098943Sluigi cmd->arg1 = arg; 239198943Sluigi} 239298943Sluigi 239398943Sluigi/* 239498943Sluigi * Fetch and add the MAC address and type, with masks. This generates one or 239598943Sluigi * two microinstructions, and returns the pointer to the last one. 239698943Sluigi */ 239798943Sluigistatic ipfw_insn * 2398204591Sluigiadd_mac(ipfw_insn *cmd, char *av[]) 239998943Sluigi{ 2400102087Sluigi ipfw_insn_mac *mac; 240198943Sluigi 2402204591Sluigi if ( ( av[0] == NULL ) || ( av[1] == NULL ) ) 2403102098Sluigi errx(EX_DATAERR, "MAC dst src"); 240498943Sluigi 240598943Sluigi cmd->opcode = O_MACADDR2; 240698943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | F_INSN_SIZE(ipfw_insn_mac); 240798943Sluigi 240898943Sluigi mac = (ipfw_insn_mac *)cmd; 2409101978Sluigi get_mac_addr_mask(av[0], mac->addr, mac->mask); /* dst */ 2410169424Smaxim get_mac_addr_mask(av[1], &(mac->addr[ETHER_ADDR_LEN]), 2411169424Smaxim &(mac->mask[ETHER_ADDR_LEN])); /* src */ 2412102087Sluigi return cmd; 2413102087Sluigi} 241498943Sluigi 2415102087Sluigistatic ipfw_insn * 2416204591Sluigiadd_mactype(ipfw_insn *cmd, char *av) 2417102087Sluigi{ 2418204591Sluigi if (!av) 2419102087Sluigi errx(EX_DATAERR, "missing MAC type"); 2420102087Sluigi if (strcmp(av, "any") != 0) { /* we have a non-null type */ 2421102087Sluigi fill_newports((ipfw_insn_u16 *)cmd, av, IPPROTO_ETHERTYPE); 242298943Sluigi cmd->opcode = O_MAC_TYPE; 2423102087Sluigi return cmd; 2424102087Sluigi } else 2425102087Sluigi return NULL; 2426102087Sluigi} 242798943Sluigi 2428102087Sluigistatic ipfw_insn * 2429152923Sumeadd_proto0(ipfw_insn *cmd, char *av, u_char *protop) 2430102087Sluigi{ 2431102087Sluigi struct protoent *pe; 2432152923Sume char *ep; 2433152923Sume int proto; 2434102087Sluigi 2435156315Sume proto = strtol(av, &ep, 10); 2436156315Sume if (*ep != '\0' || proto <= 0) { 2437152923Sume if ((pe = getprotobyname(av)) == NULL) 2438152923Sume return NULL; 2439152923Sume proto = pe->p_proto; 2440152923Sume } 2441145246Sbrooks 2442152923Sume fill_cmd(cmd, O_PROTO, 0, proto); 2443152923Sume *protop = proto; 2444152923Sume return cmd; 2445152923Sume} 2446152923Sume 2447152923Sumestatic ipfw_insn * 2448152923Sumeadd_proto(ipfw_insn *cmd, char *av, u_char *protop) 2449152923Sume{ 2450152923Sume u_char proto = IPPROTO_IP; 2451152923Sume 2452156315Sume if (_substrcmp(av, "all") == 0 || strcmp(av, "ip") == 0) 2453146894Smlaier ; /* do not set O_IP4 nor O_IP6 */ 2454152923Sume else if (strcmp(av, "ip4") == 0) 2455152923Sume /* explicit "just IPv4" rule */ 2456152923Sume fill_cmd(cmd, O_IP4, 0, 0); 2457152923Sume else if (strcmp(av, "ip6") == 0) { 2458152923Sume /* explicit "just IPv6" rule */ 2459152923Sume proto = IPPROTO_IPV6; 2460152923Sume fill_cmd(cmd, O_IP6, 0, 0); 2461152923Sume } else 2462152923Sume return add_proto0(cmd, av, protop); 2463152923Sume 2464152923Sume *protop = proto; 2465152923Sume return cmd; 2466152923Sume} 2467152923Sume 2468152923Sumestatic ipfw_insn * 2469152923Sumeadd_proto_compat(ipfw_insn *cmd, char *av, u_char *protop) 2470152923Sume{ 2471152923Sume u_char proto = IPPROTO_IP; 2472152923Sume 2473152923Sume if (_substrcmp(av, "all") == 0 || strcmp(av, "ip") == 0) 2474152923Sume ; /* do not set O_IP4 nor O_IP6 */ 2475146894Smlaier else if (strcmp(av, "ipv4") == 0 || strcmp(av, "ip4") == 0) 2476146894Smlaier /* explicit "just IPv4" rule */ 2477146894Smlaier fill_cmd(cmd, O_IP4, 0, 0); 2478146894Smlaier else if (strcmp(av, "ipv6") == 0 || strcmp(av, "ip6") == 0) { 2479146894Smlaier /* explicit "just IPv6" rule */ 2480152923Sume proto = IPPROTO_IPV6; 2481146894Smlaier fill_cmd(cmd, O_IP6, 0, 0); 2482152923Sume } else 2483152923Sume return add_proto0(cmd, av, protop); 2484145246Sbrooks 2485152923Sume *protop = proto; 248698943Sluigi return cmd; 248798943Sluigi} 248898943Sluigi 2489102087Sluigistatic ipfw_insn * 2490102087Sluigiadd_srcip(ipfw_insn *cmd, char *av) 2491102087Sluigi{ 2492102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2493102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2494102087Sluigi cmd->opcode = O_IP_SRC_SET; 2495130281Sru else if (cmd->opcode == O_IP_DST_LOOKUP) /* table */ 2496130281Sru cmd->opcode = O_IP_SRC_LOOKUP; 2497102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2498102087Sluigi cmd->opcode = O_IP_SRC_ME; 2499102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2500102087Sluigi cmd->opcode = O_IP_SRC; 2501117328Sluigi else /* addr/mask */ 2502102087Sluigi cmd->opcode = O_IP_SRC_MASK; 2503102087Sluigi return cmd; 2504102087Sluigi} 2505102087Sluigi 2506102087Sluigistatic ipfw_insn * 2507102087Sluigiadd_dstip(ipfw_insn *cmd, char *av) 2508102087Sluigi{ 2509102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2510102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2511102087Sluigi ; 2512130281Sru else if (cmd->opcode == O_IP_DST_LOOKUP) /* table */ 2513130281Sru ; 2514102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2515102087Sluigi cmd->opcode = O_IP_DST_ME; 2516102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2517102087Sluigi cmd->opcode = O_IP_DST; 2518117328Sluigi else /* addr/mask */ 2519102087Sluigi cmd->opcode = O_IP_DST_MASK; 2520102087Sluigi return cmd; 2521102087Sluigi} 2522102087Sluigi 2523102087Sluigistatic ipfw_insn * 2524102087Sluigiadd_ports(ipfw_insn *cmd, char *av, u_char proto, int opcode) 2525102087Sluigi{ 2526204591Sluigi /* XXX "any" is trapped before. Perhaps "to" */ 2527140271Sbrooks if (_substrcmp(av, "any") == 0) { 2528102087Sluigi return NULL; 2529102087Sluigi } else if (fill_newports((ipfw_insn_u16 *)cmd, av, proto)) { 2530102087Sluigi /* XXX todo: check that we have a protocol with ports */ 2531102087Sluigi cmd->opcode = opcode; 2532102087Sluigi return cmd; 2533102087Sluigi } 2534102087Sluigi return NULL; 2535102087Sluigi} 2536102087Sluigi 2537145246Sbrooksstatic ipfw_insn * 2538145246Sbrooksadd_src(ipfw_insn *cmd, char *av, u_char proto) 2539145246Sbrooks{ 2540145246Sbrooks struct in6_addr a; 2541158553Smlaier char *host, *ch; 2542158553Smlaier ipfw_insn *ret = NULL; 2543145246Sbrooks 2544158553Smlaier if ((host = strdup(av)) == NULL) 2545158553Smlaier return NULL; 2546158553Smlaier if ((ch = strrchr(host, '/')) != NULL) 2547158553Smlaier *ch = '\0'; 2548158553Smlaier 2549145246Sbrooks if (proto == IPPROTO_IPV6 || strcmp(av, "me6") == 0 || 2550204591Sluigi inet_pton(AF_INET6, host, &a) == 1) 2551158553Smlaier ret = add_srcip6(cmd, av); 2552145246Sbrooks /* XXX: should check for IPv4, not !IPv6 */ 2553161483Sdwmalone if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 || 2554204591Sluigi inet_pton(AF_INET6, host, &a) != 1)) 2555158553Smlaier ret = add_srcip(cmd, av); 2556161483Sdwmalone if (ret == NULL && strcmp(av, "any") != 0) 2557158553Smlaier ret = cmd; 2558145246Sbrooks 2559158553Smlaier free(host); 2560158553Smlaier return ret; 2561145246Sbrooks} 2562145246Sbrooks 2563145246Sbrooksstatic ipfw_insn * 2564145246Sbrooksadd_dst(ipfw_insn *cmd, char *av, u_char proto) 2565145246Sbrooks{ 2566145246Sbrooks struct in6_addr a; 2567158553Smlaier char *host, *ch; 2568158553Smlaier ipfw_insn *ret = NULL; 2569145246Sbrooks 2570158553Smlaier if ((host = strdup(av)) == NULL) 2571158553Smlaier return NULL; 2572158553Smlaier if ((ch = strrchr(host, '/')) != NULL) 2573158553Smlaier *ch = '\0'; 2574158553Smlaier 2575145246Sbrooks if (proto == IPPROTO_IPV6 || strcmp(av, "me6") == 0 || 2576204591Sluigi inet_pton(AF_INET6, host, &a) == 1) 2577158553Smlaier ret = add_dstip6(cmd, av); 2578145246Sbrooks /* XXX: should check for IPv4, not !IPv6 */ 2579161483Sdwmalone if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 || 2580204591Sluigi inet_pton(AF_INET6, host, &a) != 1)) 2581158553Smlaier ret = add_dstip(cmd, av); 2582161483Sdwmalone if (ret == NULL && strcmp(av, "any") != 0) 2583158553Smlaier ret = cmd; 2584145246Sbrooks 2585158553Smlaier free(host); 2586158553Smlaier return ret; 2587145246Sbrooks} 2588145246Sbrooks 258998943Sluigi/* 259098943Sluigi * Parse arguments and assemble the microinstructions which make up a rule. 259198943Sluigi * Rules are added into the 'rulebuf' and then copied in the correct order 259298943Sluigi * into the actual rule. 259398943Sluigi * 2594136071Sgreen * The syntax for a rule starts with the action, followed by 2595136071Sgreen * optional action parameters, and the various match patterns. 2596108533Sschweikh * In the assembled microcode, the first opcode must be an O_PROBE_STATE 259798943Sluigi * (generated if the rule includes a keep-state option), then the 2598136071Sgreen * various match patterns, log/altq actions, and the actual action. 2599106505Smaxim * 260098943Sluigi */ 2601187767Sluigivoid 2602204591Sluigiipfw_add(char *av[]) 260398943Sluigi{ 260498943Sluigi /* 260598943Sluigi * rules are added into the 'rulebuf' and then copied in 260698943Sluigi * the correct order into the actual rule. 260798943Sluigi * Some things that need to go out of order (prob, action etc.) 260898943Sluigi * go into actbuf[]. 260998943Sluigi */ 2610117328Sluigi static uint32_t rulebuf[255], actbuf[255], cmdbuf[255]; 261198943Sluigi 2612117469Sluigi ipfw_insn *src, *dst, *cmd, *action, *prev=NULL; 2613102087Sluigi ipfw_insn *first_cmd; /* first match pattern */ 261498943Sluigi 261598943Sluigi struct ip_fw *rule; 261698943Sluigi 261798943Sluigi /* 261898943Sluigi * various flags used to record that we entered some fields. 261998943Sluigi */ 2620101116Sluigi ipfw_insn *have_state = NULL; /* check-state or keep-state */ 2621158879Soleg ipfw_insn *have_log = NULL, *have_altq = NULL, *have_tag = NULL; 2622134475Smaxim size_t len; 262398943Sluigi 262498943Sluigi int i; 262598943Sluigi 262698943Sluigi int open_par = 0; /* open parenthesis ( */ 262798943Sluigi 262898943Sluigi /* proto is here because it is used to fetch ports */ 262998943Sluigi u_char proto = IPPROTO_IP; /* default protocol */ 263098943Sluigi 2631107289Sluigi double match_prob = 1; /* match probability, default is always match */ 2632107289Sluigi 263398943Sluigi bzero(actbuf, sizeof(actbuf)); /* actions go here */ 263498943Sluigi bzero(cmdbuf, sizeof(cmdbuf)); 263598943Sluigi bzero(rulebuf, sizeof(rulebuf)); 263698943Sluigi 263798943Sluigi rule = (struct ip_fw *)rulebuf; 263898943Sluigi cmd = (ipfw_insn *)cmdbuf; 263998943Sluigi action = (ipfw_insn *)actbuf; 264098943Sluigi 2641204591Sluigi av++; 264298943Sluigi 264398943Sluigi /* [rule N] -- Rule number optional */ 2644204591Sluigi if (av[0] && isdigit(**av)) { 264598943Sluigi rule->rulenum = atoi(*av); 264698943Sluigi av++; 264798943Sluigi } 264898943Sluigi 2649117655Sluigi /* [set N] -- set number (0..RESVD_SET), optional */ 2650204591Sluigi if (av[0] && !av[1] && _substrcmp(*av, "set") == 0) { 2651101628Sluigi int set = strtoul(av[1], NULL, 10); 2652117655Sluigi if (set < 0 || set > RESVD_SET) 2653101628Sluigi errx(EX_DATAERR, "illegal set %s", av[1]); 2654101628Sluigi rule->set = set; 2655204591Sluigi av += 2; 2656101628Sluigi } 2657101628Sluigi 265898943Sluigi /* [prob D] -- match probability, optional */ 2659204591Sluigi if (av[0] && av[1] && _substrcmp(*av, "prob") == 0) { 2660107289Sluigi match_prob = strtod(av[1], NULL); 266198943Sluigi 2662107289Sluigi if (match_prob <= 0 || match_prob > 1) 266398943Sluigi errx(EX_DATAERR, "illegal match prob. %s", av[1]); 2664204591Sluigi av += 2; 266598943Sluigi } 266698943Sluigi 266798943Sluigi /* action -- mandatory */ 266898943Sluigi NEED1("missing action"); 266998943Sluigi i = match_token(rule_actions, *av); 2670204591Sluigi av++; 267198943Sluigi action->len = 1; /* default */ 267298943Sluigi switch(i) { 267398943Sluigi case TOK_CHECKSTATE: 2674101116Sluigi have_state = action; 267598943Sluigi action->opcode = O_CHECK_STATE; 267698943Sluigi break; 267798943Sluigi 267898943Sluigi case TOK_ACCEPT: 267998943Sluigi action->opcode = O_ACCEPT; 268098943Sluigi break; 268198943Sluigi 268298943Sluigi case TOK_DENY: 268398943Sluigi action->opcode = O_DENY; 268499475Sluigi action->arg1 = 0; 268598943Sluigi break; 268698943Sluigi 268799475Sluigi case TOK_REJECT: 268899475Sluigi action->opcode = O_REJECT; 268999475Sluigi action->arg1 = ICMP_UNREACH_HOST; 269099475Sluigi break; 269199475Sluigi 269299475Sluigi case TOK_RESET: 269399475Sluigi action->opcode = O_REJECT; 269499475Sluigi action->arg1 = ICMP_REJECT_RST; 269599475Sluigi break; 269699475Sluigi 2697149020Sbz case TOK_RESET6: 2698149020Sbz action->opcode = O_UNREACH6; 2699149020Sbz action->arg1 = ICMP6_UNREACH_RST; 2700149020Sbz break; 2701149020Sbz 270299475Sluigi case TOK_UNREACH: 270399475Sluigi action->opcode = O_REJECT; 270499475Sluigi NEED1("missing reject code"); 270599475Sluigi fill_reject_code(&action->arg1, *av); 2706204591Sluigi av++; 270799475Sluigi break; 270899475Sluigi 2709149020Sbz case TOK_UNREACH6: 2710149020Sbz action->opcode = O_UNREACH6; 2711149020Sbz NEED1("missing unreach code"); 2712149020Sbz fill_unreach6_code(&action->arg1, *av); 2713204591Sluigi av++; 2714149020Sbz break; 2715149020Sbz 271698943Sluigi case TOK_COUNT: 271798943Sluigi action->opcode = O_COUNT; 271898943Sluigi break; 271998943Sluigi 2720176517Spiso case TOK_NAT: 2721176517Spiso action->opcode = O_NAT; 2722176517Spiso action->len = F_INSN_SIZE(ipfw_insn_nat); 2723176517Spiso goto chkarg; 2724178888Sjulian 272598943Sluigi case TOK_QUEUE: 2726153374Sglebius action->opcode = O_QUEUE; 2727153374Sglebius goto chkarg; 272898943Sluigi case TOK_PIPE: 2729153374Sglebius action->opcode = O_PIPE; 2730153374Sglebius goto chkarg; 273198943Sluigi case TOK_SKIPTO: 2732153374Sglebius action->opcode = O_SKIPTO; 2733153374Sglebius goto chkarg; 2734153374Sglebius case TOK_NETGRAPH: 2735153374Sglebius action->opcode = O_NETGRAPH; 2736153374Sglebius goto chkarg; 2737153374Sglebius case TOK_NGTEE: 2738153374Sglebius action->opcode = O_NGTEE; 2739153374Sglebius goto chkarg; 274098943Sluigi case TOK_DIVERT: 2741153374Sglebius action->opcode = O_DIVERT; 2742153374Sglebius goto chkarg; 274398943Sluigi case TOK_TEE: 2744153374Sglebius action->opcode = O_TEE; 2745153374Sglebiuschkarg: 2746204591Sluigi if (!av[0]) 2747153374Sglebius errx(EX_USAGE, "missing argument for %s", *(av - 1)); 2748153374Sglebius if (isdigit(**av)) { 2749153374Sglebius action->arg1 = strtoul(*av, NULL, 10); 2750153374Sglebius if (action->arg1 <= 0 || action->arg1 >= IP_FW_TABLEARG) 2751153374Sglebius errx(EX_DATAERR, "illegal argument for %s", 2752153374Sglebius *(av - 1)); 2753187762Sluigi } else if (_substrcmp(*av, "tablearg") == 0) { 2754153374Sglebius action->arg1 = IP_FW_TABLEARG; 2755153374Sglebius } else if (i == TOK_DIVERT || i == TOK_TEE) { 275698943Sluigi struct servent *s; 275798943Sluigi setservent(1); 275898943Sluigi s = getservbyname(av[0], "divert"); 275998943Sluigi if (s != NULL) 276098943Sluigi action->arg1 = ntohs(s->s_port); 276198943Sluigi else 276298943Sluigi errx(EX_DATAERR, "illegal divert/tee port"); 2763153374Sglebius } else 2764153374Sglebius errx(EX_DATAERR, "illegal argument for %s", *(av - 1)); 2765204591Sluigi av++; 276698943Sluigi break; 276798943Sluigi 276898943Sluigi case TOK_FORWARD: { 276998943Sluigi ipfw_insn_sa *p = (ipfw_insn_sa *)action; 277098943Sluigi char *s, *end; 277198943Sluigi 277298943Sluigi NEED1("missing forward address[:port]"); 277398943Sluigi 277498943Sluigi action->opcode = O_FORWARD_IP; 277598943Sluigi action->len = F_INSN_SIZE(ipfw_insn_sa); 277698943Sluigi 2777188005Sluigi /* 2778188005Sluigi * In the kernel we assume AF_INET and use only 2779200183Sluigi * sin_port and sin_addr. Remember to set sin_len as 2780200183Sluigi * the routing code seems to use it too. 2781188005Sluigi */ 278298943Sluigi p->sa.sin_family = AF_INET; 2783200183Sluigi p->sa.sin_len = sizeof(struct sockaddr_in); 278498943Sluigi p->sa.sin_port = 0; 278598943Sluigi /* 278698943Sluigi * locate the address-port separator (':' or ',') 278798943Sluigi */ 278898943Sluigi s = strchr(*av, ':'); 278998943Sluigi if (s == NULL) 279098943Sluigi s = strchr(*av, ','); 279198943Sluigi if (s != NULL) { 279298943Sluigi *(s++) = '\0'; 279398943Sluigi i = strtoport(s, &end, 0 /* base */, 0 /* proto */); 279498943Sluigi if (s == end) 279598943Sluigi errx(EX_DATAERR, 279698943Sluigi "illegal forwarding port ``%s''", s); 2797103241Sluigi p->sa.sin_port = (u_short)i; 279898943Sluigi } 2799161456Sjulian if (_substrcmp(*av, "tablearg") == 0) 2800161456Sjulian p->sa.sin_addr.s_addr = INADDR_ANY; 2801161456Sjulian else 2802161424Sjulian lookup_host(*av, &(p->sa.sin_addr)); 2803204591Sluigi av++; 280498943Sluigi break; 2805161424Sjulian } 2806117469Sluigi case TOK_COMMENT: 2807117469Sluigi /* pretend it is a 'count' rule followed by the comment */ 2808117469Sluigi action->opcode = O_COUNT; 2809204591Sluigi av--; /* go back... */ 2810117469Sluigi break; 2811178888Sjulian 2812178888Sjulian case TOK_SETFIB: 2813178888Sjulian { 2814178888Sjulian int numfibs; 2815178916Sjulian size_t intsize = sizeof(int); 2816178888Sjulian 2817178888Sjulian action->opcode = O_SETFIB; 2818178888Sjulian NEED1("missing fib number"); 2819178888Sjulian action->arg1 = strtoul(*av, NULL, 10); 2820178916Sjulian if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1) 2821178888Sjulian errx(EX_DATAERR, "fibs not suported.\n"); 2822178888Sjulian if (action->arg1 >= numfibs) /* Temporary */ 2823178888Sjulian errx(EX_DATAERR, "fib too large.\n"); 2824204591Sluigi av++; 2825178888Sjulian break; 2826178888Sjulian } 2827190633Spiso 2828190633Spiso case TOK_REASS: 2829190633Spiso action->opcode = O_REASS; 2830190633Spiso break; 2831165648Spiso 283298943Sluigi default: 2833102087Sluigi errx(EX_DATAERR, "invalid action %s\n", av[-1]); 283498943Sluigi } 283598943Sluigi action = next_cmd(action); 283698943Sluigi 283798943Sluigi /* 2838136071Sgreen * [altq queuename] -- altq tag, optional 283998943Sluigi * [log [logamount N]] -- log, optional 284098943Sluigi * 2841136071Sgreen * If they exist, it go first in the cmdbuf, but then it is 284298943Sluigi * skipped in the copy section to the end of the buffer. 284398943Sluigi */ 2844204591Sluigi while (av[0] != NULL && (i = match_token(rule_action_params, *av)) != -1) { 2845204591Sluigi av++; 2846136071Sgreen switch (i) { 2847136071Sgreen case TOK_LOG: 2848136071Sgreen { 2849136071Sgreen ipfw_insn_log *c = (ipfw_insn_log *)cmd; 2850136071Sgreen int l; 285198943Sluigi 2852136071Sgreen if (have_log) 2853136071Sgreen errx(EX_DATAERR, 2854136071Sgreen "log cannot be specified more than once"); 2855136071Sgreen have_log = (ipfw_insn *)c; 2856136071Sgreen cmd->len = F_INSN_SIZE(ipfw_insn_log); 2857136071Sgreen cmd->opcode = O_LOG; 2858204591Sluigi if (av[0] && _substrcmp(*av, "logamount") == 0) { 2859204591Sluigi av++; 2860136071Sgreen NEED1("logamount requires argument"); 2861136071Sgreen l = atoi(*av); 2862136071Sgreen if (l < 0) 2863136071Sgreen errx(EX_DATAERR, 2864136071Sgreen "logamount must be positive"); 2865136071Sgreen c->max_log = l; 2866204591Sluigi av++; 2867136071Sgreen } else { 2868136071Sgreen len = sizeof(c->max_log); 2869136071Sgreen if (sysctlbyname("net.inet.ip.fw.verbose_limit", 2870136071Sgreen &c->max_log, &len, NULL, 0) == -1) 2871136071Sgreen errx(1, "sysctlbyname(\"%s\")", 2872136071Sgreen "net.inet.ip.fw.verbose_limit"); 2873136071Sgreen } 2874136071Sgreen } 2875136071Sgreen break; 2876136071Sgreen 2877204591Sluigi#ifndef NO_ALTQ 2878136071Sgreen case TOK_ALTQ: 2879136071Sgreen { 2880136071Sgreen ipfw_insn_altq *a = (ipfw_insn_altq *)cmd; 2881136071Sgreen 2882136071Sgreen NEED1("missing altq queue name"); 2883136071Sgreen if (have_altq) 2884136071Sgreen errx(EX_DATAERR, 2885136071Sgreen "altq cannot be specified more than once"); 2886136071Sgreen have_altq = (ipfw_insn *)a; 2887136071Sgreen cmd->len = F_INSN_SIZE(ipfw_insn_altq); 2888136071Sgreen cmd->opcode = O_ALTQ; 2889187983Sluigi a->qid = altq_name_to_qid(*av); 2890204591Sluigi av++; 2891136071Sgreen } 2892136071Sgreen break; 2893204591Sluigi#endif 2894136071Sgreen 2895158879Soleg case TOK_TAG: 2896159636Soleg case TOK_UNTAG: { 2897159636Soleg uint16_t tag; 2898159636Soleg 2899158879Soleg if (have_tag) 2900159636Soleg errx(EX_USAGE, "tag and untag cannot be " 2901159636Soleg "specified more than once"); 2902193516Sluigi GET_UINT_ARG(tag, IPFW_ARG_MIN, IPFW_ARG_MAX, i, 2903182823Srik rule_action_params); 2904158879Soleg have_tag = cmd; 2905159636Soleg fill_cmd(cmd, O_TAG, (i == TOK_TAG) ? 0: F_NOT, tag); 2906204591Sluigi av++; 2907158879Soleg break; 2908159636Soleg } 2909158879Soleg 2910136071Sgreen default: 2911136071Sgreen abort(); 291298943Sluigi } 291398943Sluigi cmd = next_cmd(cmd); 291498943Sluigi } 291598943Sluigi 2916101116Sluigi if (have_state) /* must be a check-state, we are done */ 291798943Sluigi goto done; 291898943Sluigi 291998943Sluigi#define OR_START(target) \ 2920204591Sluigi if (av[0] && (*av[0] == '(' || *av[0] == '{')) { \ 292198943Sluigi if (open_par) \ 292298943Sluigi errx(EX_USAGE, "nested \"(\" not allowed\n"); \ 2923101641Sluigi prev = NULL; \ 292498943Sluigi open_par = 1; \ 292598943Sluigi if ( (av[0])[1] == '\0') { \ 2926204591Sluigi av++; \ 292798943Sluigi } else \ 292898943Sluigi (*av)++; \ 292998943Sluigi } \ 293098943Sluigi target: \ 293198943Sluigi 293298943Sluigi 293398943Sluigi#define CLOSE_PAR \ 293498943Sluigi if (open_par) { \ 2935204591Sluigi if (av[0] && ( \ 2936140271Sbrooks strcmp(*av, ")") == 0 || \ 2937140271Sbrooks strcmp(*av, "}") == 0)) { \ 2938101641Sluigi prev = NULL; \ 293998943Sluigi open_par = 0; \ 2940204591Sluigi av++; \ 294198943Sluigi } else \ 294298943Sluigi errx(EX_USAGE, "missing \")\"\n"); \ 294398943Sluigi } 2944106505Smaxim 294598943Sluigi#define NOT_BLOCK \ 2946204591Sluigi if (av[0] && _substrcmp(*av, "not") == 0) { \ 294798943Sluigi if (cmd->len & F_NOT) \ 294898943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); \ 294998943Sluigi cmd->len |= F_NOT; \ 2950204591Sluigi av++; \ 295198943Sluigi } 295298943Sluigi 295398943Sluigi#define OR_BLOCK(target) \ 2954204591Sluigi if (av[0] && _substrcmp(*av, "or") == 0) { \ 295598943Sluigi if (prev == NULL || open_par == 0) \ 295698943Sluigi errx(EX_DATAERR, "invalid OR block"); \ 295798943Sluigi prev->len |= F_OR; \ 2958204591Sluigi av++; \ 295998943Sluigi goto target; \ 296098943Sluigi } \ 296198943Sluigi CLOSE_PAR; 296298943Sluigi 2963102087Sluigi first_cmd = cmd; 2964102098Sluigi 2965102098Sluigi#if 0 296698943Sluigi /* 2967102087Sluigi * MAC addresses, optional. 2968102087Sluigi * If we have this, we skip the part "proto from src to dst" 2969102087Sluigi * and jump straight to the option parsing. 2970102087Sluigi */ 2971102087Sluigi NOT_BLOCK; 2972102087Sluigi NEED1("missing protocol"); 2973140271Sbrooks if (_substrcmp(*av, "MAC") == 0 || 2974140271Sbrooks _substrcmp(*av, "mac") == 0) { 2975204591Sluigi av++; /* the "MAC" keyword */ 2976204591Sluigi add_mac(cmd, av); /* exits in case of errors */ 2977102087Sluigi cmd = next_cmd(cmd); 2978204591Sluigi av += 2; /* dst-mac and src-mac */ 2979102087Sluigi NOT_BLOCK; 2980102087Sluigi NEED1("missing mac type"); 2981204591Sluigi if (add_mactype(cmd, av[0])) 2982102087Sluigi cmd = next_cmd(cmd); 2983204591Sluigi av++; /* any or mac-type */ 2984102087Sluigi goto read_options; 2985102087Sluigi } 2986102098Sluigi#endif 2987102087Sluigi 2988102087Sluigi /* 298998943Sluigi * protocol, mandatory 299098943Sluigi */ 299198943Sluigi OR_START(get_proto); 299298943Sluigi NOT_BLOCK; 299398943Sluigi NEED1("missing protocol"); 2994152923Sume if (add_proto_compat(cmd, *av, &proto)) { 2995204591Sluigi av++; 2996147105Smlaier if (F_LEN(cmd) != 0) { 2997102087Sluigi prev = cmd; 2998102087Sluigi cmd = next_cmd(cmd); 2999102087Sluigi } 3000102098Sluigi } else if (first_cmd != cmd) { 3001116438Smaxim errx(EX_DATAERR, "invalid protocol ``%s''", *av); 3002102098Sluigi } else 3003102098Sluigi goto read_options; 300498943Sluigi OR_BLOCK(get_proto); 300598943Sluigi 300698943Sluigi /* 3007102087Sluigi * "from", mandatory 300898943Sluigi */ 3009204591Sluigi if ((av[0] == NULL) || _substrcmp(*av, "from") != 0) 301098943Sluigi errx(EX_USAGE, "missing ``from''"); 3011204591Sluigi av++; 301298943Sluigi 301398943Sluigi /* 301498943Sluigi * source IP, mandatory 301598943Sluigi */ 301698943Sluigi OR_START(source_ip); 301798943Sluigi NOT_BLOCK; /* optional "not" */ 301898943Sluigi NEED1("missing source address"); 3019145246Sbrooks if (add_src(cmd, *av, proto)) { 3020204591Sluigi av++; 3021102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 3022102087Sluigi prev = cmd; 3023102087Sluigi cmd = next_cmd(cmd); 3024102087Sluigi } 3025145246Sbrooks } else 3026145246Sbrooks errx(EX_USAGE, "bad source address %s", *av); 302798943Sluigi OR_BLOCK(source_ip); 302898943Sluigi 302998943Sluigi /* 303098943Sluigi * source ports, optional 303198943Sluigi */ 303298943Sluigi NOT_BLOCK; /* optional "not" */ 3033204591Sluigi if ( av[0] != NULL ) { 3034140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3035102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 3036204591Sluigi av++; 3037102087Sluigi if (F_LEN(cmd) != 0) 3038102087Sluigi cmd = next_cmd(cmd); 3039101641Sluigi } 304098943Sluigi } 304198943Sluigi 304298943Sluigi /* 3043102087Sluigi * "to", mandatory 304498943Sluigi */ 3045204591Sluigi if ( (av[0] == NULL) || _substrcmp(*av, "to") != 0 ) 304698943Sluigi errx(EX_USAGE, "missing ``to''"); 3047204591Sluigi av++; 304898943Sluigi 304998943Sluigi /* 305098943Sluigi * destination, mandatory 305198943Sluigi */ 305298943Sluigi OR_START(dest_ip); 305398943Sluigi NOT_BLOCK; /* optional "not" */ 305498943Sluigi NEED1("missing dst address"); 3055145246Sbrooks if (add_dst(cmd, *av, proto)) { 3056204591Sluigi av++; 3057102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 3058102087Sluigi prev = cmd; 3059102087Sluigi cmd = next_cmd(cmd); 3060102087Sluigi } 3061145246Sbrooks } else 3062145246Sbrooks errx( EX_USAGE, "bad destination address %s", *av); 306398943Sluigi OR_BLOCK(dest_ip); 306498943Sluigi 306598943Sluigi /* 306698943Sluigi * dest. ports, optional 306798943Sluigi */ 306898943Sluigi NOT_BLOCK; /* optional "not" */ 3069204591Sluigi if (av[0]) { 3070140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3071102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 3072204591Sluigi av++; 3073102087Sluigi if (F_LEN(cmd) != 0) 3074102087Sluigi cmd = next_cmd(cmd); 3075101641Sluigi } 307698943Sluigi } 307798943Sluigi 307898943Sluigiread_options: 3079204591Sluigi if (av[0] && first_cmd == cmd) { 3080102087Sluigi /* 3081102087Sluigi * nothing specified so far, store in the rule to ease 3082102087Sluigi * printout later. 3083102087Sluigi */ 3084102087Sluigi rule->_pad = 1; 3085102087Sluigi } 308698943Sluigi prev = NULL; 3087204591Sluigi while ( av[0] != NULL ) { 3088101641Sluigi char *s; 3089101641Sluigi ipfw_insn_u32 *cmd32; /* alias for cmd */ 309098943Sluigi 3091101641Sluigi s = *av; 3092101641Sluigi cmd32 = (ipfw_insn_u32 *)cmd; 3093101641Sluigi 309498943Sluigi if (*s == '!') { /* alternate syntax for NOT */ 309598943Sluigi if (cmd->len & F_NOT) 309698943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 309798943Sluigi cmd->len = F_NOT; 309898943Sluigi s++; 309998943Sluigi } 310098943Sluigi i = match_token(rule_options, s); 3101204591Sluigi av++; 310298943Sluigi switch(i) { 310398943Sluigi case TOK_NOT: 310498943Sluigi if (cmd->len & F_NOT) 310598943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 310698943Sluigi cmd->len = F_NOT; 310798943Sluigi break; 310898943Sluigi 310998943Sluigi case TOK_OR: 3110101641Sluigi if (open_par == 0 || prev == NULL) 311198943Sluigi errx(EX_USAGE, "invalid \"or\" block\n"); 311298943Sluigi prev->len |= F_OR; 311398943Sluigi break; 3114101641Sluigi 3115101641Sluigi case TOK_STARTBRACE: 3116101641Sluigi if (open_par) 3117101641Sluigi errx(EX_USAGE, "+nested \"(\" not allowed\n"); 3118101641Sluigi open_par = 1; 3119101641Sluigi break; 3120101641Sluigi 3121101641Sluigi case TOK_ENDBRACE: 3122101641Sluigi if (!open_par) 3123101641Sluigi errx(EX_USAGE, "+missing \")\"\n"); 3124101641Sluigi open_par = 0; 3125102087Sluigi prev = NULL; 3126101641Sluigi break; 3127101641Sluigi 312898943Sluigi case TOK_IN: 312998943Sluigi fill_cmd(cmd, O_IN, 0, 0); 313098943Sluigi break; 313198943Sluigi 313298943Sluigi case TOK_OUT: 313398943Sluigi cmd->len ^= F_NOT; /* toggle F_NOT */ 313498943Sluigi fill_cmd(cmd, O_IN, 0, 0); 313598943Sluigi break; 313698943Sluigi 3137136073Sgreen case TOK_DIVERTED: 3138136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 3); 3139136073Sgreen break; 3140136073Sgreen 3141136073Sgreen case TOK_DIVERTEDLOOPBACK: 3142136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 1); 3143136073Sgreen break; 3144136073Sgreen 3145136073Sgreen case TOK_DIVERTEDOUTPUT: 3146136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 2); 3147136073Sgreen break; 3148136073Sgreen 314998943Sluigi case TOK_FRAG: 315098943Sluigi fill_cmd(cmd, O_FRAG, 0, 0); 315198943Sluigi break; 315298943Sluigi 315398943Sluigi case TOK_LAYER2: 315498943Sluigi fill_cmd(cmd, O_LAYER2, 0, 0); 315598943Sluigi break; 315698943Sluigi 315798943Sluigi case TOK_XMIT: 315898943Sluigi case TOK_RECV: 315998943Sluigi case TOK_VIA: 316098943Sluigi NEED1("recv, xmit, via require interface name" 316198943Sluigi " or address"); 316298943Sluigi fill_iface((ipfw_insn_if *)cmd, av[0]); 3163204591Sluigi av++; 316498943Sluigi if (F_LEN(cmd) == 0) /* not a valid address */ 316598943Sluigi break; 316698943Sluigi if (i == TOK_XMIT) 316798943Sluigi cmd->opcode = O_XMIT; 316898943Sluigi else if (i == TOK_RECV) 316998943Sluigi cmd->opcode = O_RECV; 317098943Sluigi else if (i == TOK_VIA) 317198943Sluigi cmd->opcode = O_VIA; 317298943Sluigi break; 317398943Sluigi 317499475Sluigi case TOK_ICMPTYPES: 317599475Sluigi NEED1("icmptypes requires list of types"); 317699475Sluigi fill_icmptypes((ipfw_insn_u32 *)cmd, *av); 3177204591Sluigi av++; 317899475Sluigi break; 3179145246Sbrooks 3180145246Sbrooks case TOK_ICMP6TYPES: 3181145246Sbrooks NEED1("icmptypes requires list of types"); 3182145246Sbrooks fill_icmp6types((ipfw_insn_icmp6 *)cmd, *av); 3183204591Sluigi av++; 3184145246Sbrooks break; 318599475Sluigi 318698943Sluigi case TOK_IPTTL: 318798943Sluigi NEED1("ipttl requires TTL"); 3188116690Sluigi if (strpbrk(*av, "-,")) { 3189116690Sluigi if (!add_ports(cmd, *av, 0, O_IPTTL)) 3190116690Sluigi errx(EX_DATAERR, "invalid ipttl %s", *av); 3191116690Sluigi } else 3192116690Sluigi fill_cmd(cmd, O_IPTTL, 0, strtoul(*av, NULL, 0)); 3193204591Sluigi av++; 319498943Sluigi break; 319598943Sluigi 319698943Sluigi case TOK_IPID: 3197116690Sluigi NEED1("ipid requires id"); 3198116690Sluigi if (strpbrk(*av, "-,")) { 3199116690Sluigi if (!add_ports(cmd, *av, 0, O_IPID)) 3200116690Sluigi errx(EX_DATAERR, "invalid ipid %s", *av); 3201116690Sluigi } else 3202116690Sluigi fill_cmd(cmd, O_IPID, 0, strtoul(*av, NULL, 0)); 3203204591Sluigi av++; 320498943Sluigi break; 320598943Sluigi 320698943Sluigi case TOK_IPLEN: 320798943Sluigi NEED1("iplen requires length"); 3208116690Sluigi if (strpbrk(*av, "-,")) { 3209116690Sluigi if (!add_ports(cmd, *av, 0, O_IPLEN)) 3210116690Sluigi errx(EX_DATAERR, "invalid ip len %s", *av); 3211116690Sluigi } else 3212116690Sluigi fill_cmd(cmd, O_IPLEN, 0, strtoul(*av, NULL, 0)); 3213204591Sluigi av++; 321498943Sluigi break; 321598943Sluigi 321698943Sluigi case TOK_IPVER: 321798943Sluigi NEED1("ipver requires version"); 321898943Sluigi fill_cmd(cmd, O_IPVER, 0, strtoul(*av, NULL, 0)); 3219204591Sluigi av++; 322098943Sluigi break; 322198943Sluigi 322299475Sluigi case TOK_IPPRECEDENCE: 322399475Sluigi NEED1("ipprecedence requires value"); 322499475Sluigi fill_cmd(cmd, O_IPPRECEDENCE, 0, 322599475Sluigi (strtoul(*av, NULL, 0) & 7) << 5); 3226204591Sluigi av++; 322799475Sluigi break; 322899475Sluigi 322998943Sluigi case TOK_IPOPTS: 323098943Sluigi NEED1("missing argument for ipoptions"); 3231101116Sluigi fill_flags(cmd, O_IPOPT, f_ipopts, *av); 3232204591Sluigi av++; 323398943Sluigi break; 323498943Sluigi 323599475Sluigi case TOK_IPTOS: 323699475Sluigi NEED1("missing argument for iptos"); 3237101116Sluigi fill_flags(cmd, O_IPTOS, f_iptos, *av); 3238204591Sluigi av++; 323999475Sluigi break; 324099475Sluigi 324198943Sluigi case TOK_UID: 324298943Sluigi NEED1("uid requires argument"); 324398943Sluigi { 324498943Sluigi char *end; 324598943Sluigi uid_t uid; 324698943Sluigi struct passwd *pwd; 324798943Sluigi 324898943Sluigi cmd->opcode = O_UID; 324998943Sluigi uid = strtoul(*av, &end, 0); 325098943Sluigi pwd = (*end == '\0') ? getpwuid(uid) : getpwnam(*av); 325198943Sluigi if (pwd == NULL) 325298943Sluigi errx(EX_DATAERR, "uid \"%s\" nonexistent", *av); 3253106504Smaxim cmd32->d[0] = pwd->pw_uid; 3254135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 3255204591Sluigi av++; 325698943Sluigi } 325798943Sluigi break; 325898943Sluigi 325998943Sluigi case TOK_GID: 326098943Sluigi NEED1("gid requires argument"); 326198943Sluigi { 326298943Sluigi char *end; 326398943Sluigi gid_t gid; 326498943Sluigi struct group *grp; 326598943Sluigi 326698943Sluigi cmd->opcode = O_GID; 326798943Sluigi gid = strtoul(*av, &end, 0); 326898943Sluigi grp = (*end == '\0') ? getgrgid(gid) : getgrnam(*av); 326998943Sluigi if (grp == NULL) 327098943Sluigi errx(EX_DATAERR, "gid \"%s\" nonexistent", *av); 3271106504Smaxim cmd32->d[0] = grp->gr_gid; 3272135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 3273204591Sluigi av++; 327498943Sluigi } 327598943Sluigi break; 327698943Sluigi 3277133600Scsjp case TOK_JAIL: 3278133600Scsjp NEED1("jail requires argument"); 3279133600Scsjp { 3280133600Scsjp char *end; 3281133600Scsjp int jid; 3282133600Scsjp 3283133600Scsjp cmd->opcode = O_JAIL; 3284133600Scsjp jid = (int)strtol(*av, &end, 0); 3285133600Scsjp if (jid < 0 || *end != '\0') 3286133600Scsjp errx(EX_DATAERR, "jail requires prison ID"); 3287135554Scsjp cmd32->d[0] = (uint32_t)jid; 3288135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 3289204591Sluigi av++; 3290133600Scsjp } 3291133600Scsjp break; 3292133600Scsjp 329398943Sluigi case TOK_ESTAB: 329498943Sluigi fill_cmd(cmd, O_ESTAB, 0, 0); 329598943Sluigi break; 329698943Sluigi 329798943Sluigi case TOK_SETUP: 329898943Sluigi fill_cmd(cmd, O_TCPFLAGS, 0, 329998943Sluigi (TH_SYN) | ( (TH_ACK) & 0xff) <<8 ); 330098943Sluigi break; 330198943Sluigi 3302136075Sgreen case TOK_TCPDATALEN: 3303136075Sgreen NEED1("tcpdatalen requires length"); 3304136075Sgreen if (strpbrk(*av, "-,")) { 3305136075Sgreen if (!add_ports(cmd, *av, 0, O_TCPDATALEN)) 3306136075Sgreen errx(EX_DATAERR, "invalid tcpdata len %s", *av); 3307136075Sgreen } else 3308136075Sgreen fill_cmd(cmd, O_TCPDATALEN, 0, 3309136075Sgreen strtoul(*av, NULL, 0)); 3310204591Sluigi av++; 3311136075Sgreen break; 3312136075Sgreen 331398943Sluigi case TOK_TCPOPTS: 331498943Sluigi NEED1("missing argument for tcpoptions"); 331598943Sluigi fill_flags(cmd, O_TCPOPTS, f_tcpopts, *av); 3316204591Sluigi av++; 331798943Sluigi break; 331898943Sluigi 331998943Sluigi case TOK_TCPSEQ: 332098943Sluigi case TOK_TCPACK: 332198943Sluigi NEED1("tcpseq/tcpack requires argument"); 332298943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 332398943Sluigi cmd->opcode = (i == TOK_TCPSEQ) ? O_TCPSEQ : O_TCPACK; 332498943Sluigi cmd32->d[0] = htonl(strtoul(*av, NULL, 0)); 3325204591Sluigi av++; 332698943Sluigi break; 332798943Sluigi 332898943Sluigi case TOK_TCPWIN: 332998943Sluigi NEED1("tcpwin requires length"); 333098943Sluigi fill_cmd(cmd, O_TCPWIN, 0, 333198943Sluigi htons(strtoul(*av, NULL, 0))); 3332204591Sluigi av++; 333398943Sluigi break; 333498943Sluigi 333598943Sluigi case TOK_TCPFLAGS: 333698943Sluigi NEED1("missing argument for tcpflags"); 333798943Sluigi cmd->opcode = O_TCPFLAGS; 333898943Sluigi fill_flags(cmd, O_TCPFLAGS, f_tcpflags, *av); 3339204591Sluigi av++; 334098943Sluigi break; 334198943Sluigi 334298943Sluigi case TOK_KEEPSTATE: 3343101641Sluigi if (open_par) 3344101641Sluigi errx(EX_USAGE, "keep-state cannot be part " 3345101641Sluigi "of an or block"); 334699909Sluigi if (have_state) 3347101116Sluigi errx(EX_USAGE, "only one of keep-state " 334899909Sluigi "and limit is allowed"); 3349101116Sluigi have_state = cmd; 335098943Sluigi fill_cmd(cmd, O_KEEP_STATE, 0, 0); 335198943Sluigi break; 335298943Sluigi 3353159636Soleg case TOK_LIMIT: { 3354159636Soleg ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 3355159636Soleg int val; 3356159636Soleg 3357101641Sluigi if (open_par) 3358159636Soleg errx(EX_USAGE, 3359159636Soleg "limit cannot be part of an or block"); 336099909Sluigi if (have_state) 3361168819Smaxim errx(EX_USAGE, "only one of keep-state and " 3362159636Soleg "limit is allowed"); 3363101116Sluigi have_state = cmd; 336498943Sluigi 336598943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_limit); 336698943Sluigi cmd->opcode = O_LIMIT; 3367159636Soleg c->limit_mask = c->conn_limit = 0; 336898943Sluigi 3369204591Sluigi while ( av[0] != NULL ) { 3370159636Soleg if ((val = match_token(limit_masks, *av)) <= 0) 337198943Sluigi break; 337298943Sluigi c->limit_mask |= val; 3373204591Sluigi av++; 337498943Sluigi } 3375159636Soleg 337698943Sluigi if (c->limit_mask == 0) 3377159636Soleg errx(EX_USAGE, "limit: missing limit mask"); 3378159636Soleg 3379193516Sluigi GET_UINT_ARG(c->conn_limit, IPFW_ARG_MIN, IPFW_ARG_MAX, 3380182823Srik TOK_LIMIT, rule_options); 3381159636Soleg 3382204591Sluigi av++; 338398943Sluigi break; 3384159636Soleg } 338598943Sluigi 3386102087Sluigi case TOK_PROTO: 3387102087Sluigi NEED1("missing protocol"); 3388145246Sbrooks if (add_proto(cmd, *av, &proto)) { 3389204591Sluigi av++; 3390102098Sluigi } else 3391116438Smaxim errx(EX_DATAERR, "invalid protocol ``%s''", 3392116438Smaxim *av); 3393102087Sluigi break; 3394106505Smaxim 3395102087Sluigi case TOK_SRCIP: 3396102087Sluigi NEED1("missing source IP"); 3397102087Sluigi if (add_srcip(cmd, *av)) { 3398204591Sluigi av++; 3399102087Sluigi } 3400102087Sluigi break; 3401102087Sluigi 3402102087Sluigi case TOK_DSTIP: 3403102087Sluigi NEED1("missing destination IP"); 3404102087Sluigi if (add_dstip(cmd, *av)) { 3405204591Sluigi av++; 3406102087Sluigi } 3407102087Sluigi break; 3408102087Sluigi 3409145246Sbrooks case TOK_SRCIP6: 3410145246Sbrooks NEED1("missing source IP6"); 3411145246Sbrooks if (add_srcip6(cmd, *av)) { 3412204591Sluigi av++; 3413145246Sbrooks } 3414145246Sbrooks break; 3415145246Sbrooks 3416145246Sbrooks case TOK_DSTIP6: 3417145246Sbrooks NEED1("missing destination IP6"); 3418145246Sbrooks if (add_dstip6(cmd, *av)) { 3419204591Sluigi av++; 3420145246Sbrooks } 3421145246Sbrooks break; 3422145246Sbrooks 3423102087Sluigi case TOK_SRCPORT: 3424102087Sluigi NEED1("missing source port"); 3425140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3426102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 3427204591Sluigi av++; 3428102087Sluigi } else 3429102087Sluigi errx(EX_DATAERR, "invalid source port %s", *av); 3430102087Sluigi break; 3431102087Sluigi 3432102087Sluigi case TOK_DSTPORT: 3433102087Sluigi NEED1("missing destination port"); 3434140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3435102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 3436204591Sluigi av++; 3437102087Sluigi } else 3438102087Sluigi errx(EX_DATAERR, "invalid destination port %s", 3439102087Sluigi *av); 3440102087Sluigi break; 3441102087Sluigi 3442102087Sluigi case TOK_MAC: 3443204591Sluigi if (add_mac(cmd, av)) 3444204591Sluigi av += 2; 3445102087Sluigi break; 3446102087Sluigi 3447102087Sluigi case TOK_MACTYPE: 3448102087Sluigi NEED1("missing mac type"); 3449204591Sluigi if (!add_mactype(cmd, *av)) 3450116438Smaxim errx(EX_DATAERR, "invalid mac type %s", *av); 3451204591Sluigi av++; 3452102087Sluigi break; 3453102087Sluigi 3454112250Scjc case TOK_VERREVPATH: 3455112250Scjc fill_cmd(cmd, O_VERREVPATH, 0, 0); 3456112250Scjc break; 3457116919Sluigi 3458128575Sandre case TOK_VERSRCREACH: 3459128575Sandre fill_cmd(cmd, O_VERSRCREACH, 0, 0); 3460128575Sandre break; 3461128575Sandre 3462133387Sandre case TOK_ANTISPOOF: 3463133387Sandre fill_cmd(cmd, O_ANTISPOOF, 0, 0); 3464133387Sandre break; 3465133387Sandre 3466117241Sluigi case TOK_IPSEC: 3467117241Sluigi fill_cmd(cmd, O_IPSEC, 0, 0); 3468117241Sluigi break; 3469117241Sluigi 3470145246Sbrooks case TOK_IPV6: 3471145246Sbrooks fill_cmd(cmd, O_IP6, 0, 0); 3472145246Sbrooks break; 3473145246Sbrooks 3474146894Smlaier case TOK_IPV4: 3475146894Smlaier fill_cmd(cmd, O_IP4, 0, 0); 3476146894Smlaier break; 3477146894Smlaier 3478145246Sbrooks case TOK_EXT6HDR: 3479145246Sbrooks fill_ext6hdr( cmd, *av ); 3480204591Sluigi av++; 3481145246Sbrooks break; 3482145246Sbrooks 3483145246Sbrooks case TOK_FLOWID: 3484145246Sbrooks if (proto != IPPROTO_IPV6 ) 3485145246Sbrooks errx( EX_USAGE, "flow-id filter is active " 3486145246Sbrooks "only for ipv6 protocol\n"); 3487145246Sbrooks fill_flow6( (ipfw_insn_u32 *) cmd, *av ); 3488204591Sluigi av++; 3489145246Sbrooks break; 3490145246Sbrooks 3491117469Sluigi case TOK_COMMENT: 3492204591Sluigi fill_comment(cmd, av); 3493204591Sluigi av[0]=NULL; 3494117469Sluigi break; 3495117469Sluigi 3496158879Soleg case TOK_TAGGED: 3497204591Sluigi if (av[0] && strpbrk(*av, "-,")) { 3498158879Soleg if (!add_ports(cmd, *av, 0, O_TAGGED)) 3499159636Soleg errx(EX_DATAERR, "tagged: invalid tag" 3500159636Soleg " list: %s", *av); 3501158879Soleg } 3502159636Soleg else { 3503159636Soleg uint16_t tag; 3504159636Soleg 3505193516Sluigi GET_UINT_ARG(tag, IPFW_ARG_MIN, IPFW_ARG_MAX, 3506182823Srik TOK_TAGGED, rule_options); 3507159636Soleg fill_cmd(cmd, O_TAGGED, 0, tag); 3508159636Soleg } 3509204591Sluigi av++; 3510158879Soleg break; 3511158879Soleg 3512178888Sjulian case TOK_FIB: 3513178888Sjulian NEED1("fib requires fib number"); 3514178888Sjulian fill_cmd(cmd, O_FIB, 0, strtoul(*av, NULL, 0)); 3515204591Sluigi av++; 3516178888Sjulian break; 3517178888Sjulian 3518200567Sluigi case TOK_LOOKUP: { 3519200567Sluigi ipfw_insn_u32 *c = (ipfw_insn_u32 *)cmd; 3520200567Sluigi char *p; 3521200567Sluigi int j; 3522200567Sluigi 3523205169Sluigi if (!av[0] || !av[1]) 3524200567Sluigi errx(EX_USAGE, "format: lookup argument tablenum"); 3525200567Sluigi cmd->opcode = O_IP_DST_LOOKUP; 3526200567Sluigi cmd->len |= F_INSN_SIZE(ipfw_insn) + 2; 3527200567Sluigi i = match_token(rule_options, *av); 3528200567Sluigi for (j = 0; lookup_key[j] >= 0 ; j++) { 3529200567Sluigi if (i == lookup_key[j]) 3530200567Sluigi break; 3531200567Sluigi } 3532200567Sluigi if (lookup_key[j] <= 0) 3533200567Sluigi errx(EX_USAGE, "format: cannot lookup on %s", *av); 3534200567Sluigi c->d[1] = j; // i converted to option 3535204591Sluigi av++; 3536200567Sluigi cmd->arg1 = strtoul(*av, &p, 0); 3537200567Sluigi if (p && *p) 3538200567Sluigi errx(EX_USAGE, "format: lookup argument tablenum"); 3539204591Sluigi av++; 3540200567Sluigi } 3541200567Sluigi break; 3542200567Sluigi 354398943Sluigi default: 354498943Sluigi errx(EX_USAGE, "unrecognised option [%d] %s\n", i, s); 354598943Sluigi } 354698943Sluigi if (F_LEN(cmd) > 0) { /* prepare to advance */ 354798943Sluigi prev = cmd; 354898943Sluigi cmd = next_cmd(cmd); 354998943Sluigi } 355098943Sluigi } 355198943Sluigi 355298943Sluigidone: 355398943Sluigi /* 355498943Sluigi * Now copy stuff into the rule. 355598943Sluigi * If we have a keep-state option, the first instruction 355698943Sluigi * must be a PROBE_STATE (which is generated here). 355798943Sluigi * If we have a LOG option, it was stored as the first command, 355898943Sluigi * and now must be moved to the top of the action part. 355998943Sluigi */ 356098943Sluigi dst = (ipfw_insn *)rule->cmd; 356198943Sluigi 356298943Sluigi /* 3563107289Sluigi * First thing to write into the command stream is the match probability. 3564107289Sluigi */ 3565107289Sluigi if (match_prob != 1) { /* 1 means always match */ 3566107289Sluigi dst->opcode = O_PROB; 3567107289Sluigi dst->len = 2; 3568107289Sluigi *((int32_t *)(dst+1)) = (int32_t)(match_prob * 0x7fffffff); 3569107289Sluigi dst += dst->len; 3570107289Sluigi } 3571107289Sluigi 3572107289Sluigi /* 357398943Sluigi * generate O_PROBE_STATE if necessary 357498943Sluigi */ 3575101116Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 357698943Sluigi fill_cmd(dst, O_PROBE_STATE, 0, 0); 357798943Sluigi dst = next_cmd(dst); 357898943Sluigi } 3579158879Soleg 3580158879Soleg /* copy all commands but O_LOG, O_KEEP_STATE, O_LIMIT, O_ALTQ, O_TAG */ 358198943Sluigi for (src = (ipfw_insn *)cmdbuf; src != cmd; src += i) { 358298943Sluigi i = F_LEN(src); 358398943Sluigi 3584101116Sluigi switch (src->opcode) { 3585101116Sluigi case O_LOG: 3586101116Sluigi case O_KEEP_STATE: 3587101116Sluigi case O_LIMIT: 3588136071Sgreen case O_ALTQ: 3589158879Soleg case O_TAG: 3590101116Sluigi break; 3591101116Sluigi default: 3592117328Sluigi bcopy(src, dst, i * sizeof(uint32_t)); 359398943Sluigi dst += i; 359498943Sluigi } 359598943Sluigi } 359698943Sluigi 359798943Sluigi /* 3598101116Sluigi * put back the have_state command as last opcode 3599101116Sluigi */ 3600101295Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 3601101116Sluigi i = F_LEN(have_state); 3602117328Sluigi bcopy(have_state, dst, i * sizeof(uint32_t)); 3603101116Sluigi dst += i; 3604101116Sluigi } 3605101116Sluigi /* 360698943Sluigi * start action section 360798943Sluigi */ 360898943Sluigi rule->act_ofs = dst - rule->cmd; 360998943Sluigi 3610158879Soleg /* put back O_LOG, O_ALTQ, O_TAG if necessary */ 3611136071Sgreen if (have_log) { 3612136071Sgreen i = F_LEN(have_log); 3613136071Sgreen bcopy(have_log, dst, i * sizeof(uint32_t)); 361498943Sluigi dst += i; 361598943Sluigi } 3616136071Sgreen if (have_altq) { 3617136071Sgreen i = F_LEN(have_altq); 3618136071Sgreen bcopy(have_altq, dst, i * sizeof(uint32_t)); 3619136071Sgreen dst += i; 3620136071Sgreen } 3621158879Soleg if (have_tag) { 3622158879Soleg i = F_LEN(have_tag); 3623158879Soleg bcopy(have_tag, dst, i * sizeof(uint32_t)); 3624158879Soleg dst += i; 3625158879Soleg } 362698943Sluigi /* 362798943Sluigi * copy all other actions 362898943Sluigi */ 362998943Sluigi for (src = (ipfw_insn *)actbuf; src != action; src += i) { 363098943Sluigi i = F_LEN(src); 3631117328Sluigi bcopy(src, dst, i * sizeof(uint32_t)); 363298943Sluigi dst += i; 363398943Sluigi } 363498943Sluigi 3635117328Sluigi rule->cmd_len = (uint32_t *)dst - (uint32_t *)(rule->cmd); 3636117469Sluigi i = (char *)dst - (char *)rule; 3637119740Stmm if (do_cmd(IP_FW_ADD, rule, (uintptr_t)&i) == -1) 363898943Sluigi err(EX_UNAVAILABLE, "getsockopt(%s)", "IP_FW_ADD"); 3639187764Sluigi if (!co.do_quiet) 3640117469Sluigi show_ipfw(rule, 0, 0); 364198943Sluigi} 364298943Sluigi 3643187767Sluigi/* 3644187767Sluigi * clear the counters or the log counters. 3645187767Sluigi */ 3646187767Sluigivoid 3647187767Sluigiipfw_zero(int ac, char *av[], int optname /* 0 = IP_FW_ZERO, 1 = IP_FW_RESETLOG */) 364898943Sluigi{ 3649170923Smaxim uint32_t arg, saved_arg; 365098943Sluigi int failed = EX_OK; 3651170923Smaxim char const *errstr; 3652187767Sluigi char const *name = optname ? "RESETLOG" : "ZERO"; 365398943Sluigi 3654187767Sluigi optname = optname ? IP_FW_RESETLOG : IP_FW_ZERO; 3655187767Sluigi 365698943Sluigi av++; ac--; 365798943Sluigi 365898943Sluigi if (!ac) { 365998943Sluigi /* clear all entries */ 3660117328Sluigi if (do_cmd(optname, NULL, 0) < 0) 3661117328Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_FW_%s)", name); 3662187764Sluigi if (!co.do_quiet) 3663117328Sluigi printf("%s.\n", optname == IP_FW_ZERO ? 3664117328Sluigi "Accounting cleared":"Logging counts reset"); 366598943Sluigi 366698943Sluigi return; 366798943Sluigi } 366898943Sluigi 366998943Sluigi while (ac) { 367098943Sluigi /* Rule number */ 367198943Sluigi if (isdigit(**av)) { 3672170923Smaxim arg = strtonum(*av, 0, 0xffff, &errstr); 3673170923Smaxim if (errstr) 3674170923Smaxim errx(EX_DATAERR, 3675170923Smaxim "invalid rule number %s\n", *av); 3676170923Smaxim saved_arg = arg; 3677187764Sluigi if (co.use_set) 3678187764Sluigi arg |= (1 << 24) | ((co.use_set - 1) << 16); 367998943Sluigi av++; 368098943Sluigi ac--; 3681170923Smaxim if (do_cmd(optname, &arg, sizeof(arg))) { 3682117328Sluigi warn("rule %u: setsockopt(IP_FW_%s)", 3683170923Smaxim saved_arg, name); 368498943Sluigi failed = EX_UNAVAILABLE; 3685187764Sluigi } else if (!co.do_quiet) 3686170923Smaxim printf("Entry %d %s.\n", saved_arg, 3687117328Sluigi optname == IP_FW_ZERO ? 3688117328Sluigi "cleared" : "logging count reset"); 368998943Sluigi } else { 369098943Sluigi errx(EX_USAGE, "invalid rule number ``%s''", *av); 369198943Sluigi } 369298943Sluigi } 369398943Sluigi if (failed != EX_OK) 369498943Sluigi exit(failed); 369598943Sluigi} 369698943Sluigi 3697187767Sluigivoid 3698187767Sluigiipfw_flush(int force) 369998943Sluigi{ 3700187764Sluigi int cmd = co.do_pipe ? IP_DUMMYNET_FLUSH : IP_FW_FLUSH; 370198943Sluigi 3702187764Sluigi if (!force && !co.do_quiet) { /* need to ask user */ 370398943Sluigi int c; 370498943Sluigi 370598943Sluigi printf("Are you sure? [yn] "); 370698943Sluigi fflush(stdout); 370798943Sluigi do { 370898943Sluigi c = toupper(getc(stdin)); 370998943Sluigi while (c != '\n' && getc(stdin) != '\n') 371098943Sluigi if (feof(stdin)) 371198943Sluigi return; /* and do not flush */ 371298943Sluigi } while (c != 'Y' && c != 'N'); 371398943Sluigi printf("\n"); 371498943Sluigi if (c == 'N') /* user said no */ 371598943Sluigi return; 371698943Sluigi } 3717204591Sluigi if (co.do_pipe) { 3718204591Sluigi dummynet_flush(); 3719204591Sluigi return; 3720204591Sluigi } 3721170923Smaxim /* `ipfw set N flush` - is the same that `ipfw delete set N` */ 3722187764Sluigi if (co.use_set) { 3723187764Sluigi uint32_t arg = ((co.use_set - 1) & 0xffff) | (1 << 24); 3724170923Smaxim if (do_cmd(IP_FW_DEL, &arg, sizeof(arg)) < 0) 3725170923Smaxim err(EX_UNAVAILABLE, "setsockopt(IP_FW_DEL)"); 3726170923Smaxim } else if (do_cmd(cmd, NULL, 0) < 0) 372798943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_%s_FLUSH)", 3728187764Sluigi co.do_pipe ? "DUMMYNET" : "FW"); 3729187764Sluigi if (!co.do_quiet) 3730187764Sluigi printf("Flushed all %s.\n", co.do_pipe ? "pipes" : "rules"); 373198943Sluigi} 373298943Sluigi 3733117544Sluigi 3734183407Srikstatic void table_list(ipfw_table_entry ent, int need_header); 3735183228Srik 3736117544Sluigi/* 3737130281Sru * This one handles all table-related commands 3738130281Sru * ipfw table N add addr[/masklen] [value] 3739130281Sru * ipfw table N delete addr[/masklen] 3740183407Srik * ipfw table {N | all} flush 3741183407Srik * ipfw table {N | all} list 3742130281Sru */ 3743187767Sluigivoid 3744187767Sluigiipfw_table_handler(int ac, char *av[]) 3745130281Sru{ 3746130281Sru ipfw_table_entry ent; 3747130281Sru int do_add; 3748183407Srik int is_all; 3749183241Srik size_t len; 3750130281Sru char *p; 3751183407Srik uint32_t a; 3752183241Srik uint32_t tables_max; 3753130281Sru 3754183263Skeramida len = sizeof(tables_max); 3755183241Srik if (sysctlbyname("net.inet.ip.fw.tables_max", &tables_max, &len, 3756183241Srik NULL, 0) == -1) { 3757183241Srik#ifdef IPFW_TABLES_MAX 3758183241Srik warn("Warn: Failed to get the max tables number via sysctl. " 3759183241Srik "Using the compiled in defaults. \nThe reason was"); 3760183241Srik tables_max = IPFW_TABLES_MAX; 3761183241Srik#else 3762183241Srik errx(1, "Failed sysctlbyname(\"net.inet.ip.fw.tables_max\")"); 3763183241Srik#endif 3764183241Srik } 3765183241Srik 3766130281Sru ac--; av++; 3767130281Sru if (ac && isdigit(**av)) { 3768130281Sru ent.tbl = atoi(*av); 3769183407Srik is_all = 0; 3770130281Sru ac--; av++; 3771183407Srik } else if (ac && _substrcmp(*av, "all") == 0) { 3772183407Srik ent.tbl = 0; 3773183407Srik is_all = 1; 3774183407Srik ac--; av++; 3775130281Sru } else 3776183407Srik errx(EX_USAGE, "table number or 'all' keyword required"); 3777183241Srik if (ent.tbl >= tables_max) 3778183241Srik errx(EX_USAGE, "The table number exceeds the maximum allowed " 3779183241Srik "value (%d)", tables_max - 1); 3780130281Sru NEED1("table needs command"); 3781183407Srik if (is_all && _substrcmp(*av, "list") != 0 3782183407Srik && _substrcmp(*av, "flush") != 0) 3783183407Srik errx(EX_USAGE, "table number required"); 3784183407Srik 3785140271Sbrooks if (_substrcmp(*av, "add") == 0 || 3786140271Sbrooks _substrcmp(*av, "delete") == 0) { 3787130281Sru do_add = **av == 'a'; 3788130281Sru ac--; av++; 3789130281Sru if (!ac) 3790130281Sru errx(EX_USAGE, "IP address required"); 3791130281Sru p = strchr(*av, '/'); 3792130281Sru if (p) { 3793130281Sru *p++ = '\0'; 3794130281Sru ent.masklen = atoi(p); 3795130281Sru if (ent.masklen > 32) 3796130281Sru errx(EX_DATAERR, "bad width ``%s''", p); 3797130281Sru } else 3798130281Sru ent.masklen = 32; 3799130281Sru if (lookup_host(*av, (struct in_addr *)&ent.addr) != 0) 3800130298Sru errx(EX_NOHOST, "hostname ``%s'' unknown", *av); 3801130281Sru ac--; av++; 3802161424Sjulian if (do_add && ac) { 3803161424Sjulian unsigned int tval; 3804161424Sjulian /* isdigit is a bit of a hack here.. */ 3805161424Sjulian if (strchr(*av, (int)'.') == NULL && isdigit(**av)) { 3806161424Sjulian ent.value = strtoul(*av, NULL, 0); 3807161424Sjulian } else { 3808161424Sjulian if (lookup_host(*av, (struct in_addr *)&tval) == 0) { 3809161424Sjulian /* The value must be stored in host order * 3810161424Sjulian * so that the values < 65k can be distinguished */ 3811161424Sjulian ent.value = ntohl(tval); 3812161424Sjulian } else { 3813161424Sjulian errx(EX_NOHOST, "hostname ``%s'' unknown", *av); 3814161424Sjulian } 3815161424Sjulian } 3816161424Sjulian } else 3817130281Sru ent.value = 0; 3818130281Sru if (do_cmd(do_add ? IP_FW_TABLE_ADD : IP_FW_TABLE_DEL, 3819157335Sjulian &ent, sizeof(ent)) < 0) { 3820155639Sjulian /* If running silent, don't bomb out on these errors. */ 3821187764Sluigi if (!(co.do_quiet && (errno == (do_add ? EEXIST : ESRCH)))) 3822155639Sjulian err(EX_OSERR, "setsockopt(IP_FW_TABLE_%s)", 3823155639Sjulian do_add ? "ADD" : "DEL"); 3824155639Sjulian /* In silent mode, react to a failed add by deleting */ 3825157332Sjulian if (do_add) { 3826155639Sjulian do_cmd(IP_FW_TABLE_DEL, &ent, sizeof(ent)); 3827155639Sjulian if (do_cmd(IP_FW_TABLE_ADD, 3828155639Sjulian &ent, sizeof(ent)) < 0) 3829155639Sjulian err(EX_OSERR, 3830155639Sjulian "setsockopt(IP_FW_TABLE_ADD)"); 3831157332Sjulian } 3832157335Sjulian } 3833140271Sbrooks } else if (_substrcmp(*av, "flush") == 0) { 3834204591Sluigi a = is_all ? tables_max : (uint32_t)(ent.tbl + 1); 3835183407Srik do { 3836183407Srik if (do_cmd(IP_FW_TABLE_FLUSH, &ent.tbl, 3837183407Srik sizeof(ent.tbl)) < 0) 3838183407Srik err(EX_OSERR, "setsockopt(IP_FW_TABLE_FLUSH)"); 3839183407Srik } while (++ent.tbl < a); 3840140271Sbrooks } else if (_substrcmp(*av, "list") == 0) { 3841204591Sluigi a = is_all ? tables_max : (uint32_t)(ent.tbl + 1); 3842183407Srik do { 3843183415Srik table_list(ent, is_all); 3844183407Srik } while (++ent.tbl < a); 3845183228Srik } else 3846183228Srik errx(EX_USAGE, "invalid table command %s", *av); 3847183228Srik} 3848183205Srik 3849183228Srikstatic void 3850183407Sriktable_list(ipfw_table_entry ent, int need_header) 3851183228Srik{ 3852183228Srik ipfw_table *tbl; 3853183228Srik socklen_t l; 3854183228Srik uint32_t a; 3855183205Srik 3856183228Srik a = ent.tbl; 3857183228Srik l = sizeof(a); 3858183228Srik if (do_cmd(IP_FW_TABLE_GETSIZE, &a, (uintptr_t)&l) < 0) 3859183228Srik err(EX_OSERR, "getsockopt(IP_FW_TABLE_GETSIZE)"); 3860183228Srik 3861183228Srik /* If a is zero we have nothing to do, the table is empty. */ 3862183228Srik if (a == 0) 3863183228Srik return; 3864183228Srik 3865183228Srik l = sizeof(*tbl) + a * sizeof(ipfw_table_entry); 3866187716Sluigi tbl = safe_calloc(1, l); 3867183228Srik tbl->tbl = ent.tbl; 3868183228Srik if (do_cmd(IP_FW_TABLE_LIST, tbl, (uintptr_t)&l) < 0) 3869183228Srik err(EX_OSERR, "getsockopt(IP_FW_TABLE_LIST)"); 3870183407Srik if (tbl->cnt && need_header) 3871183407Srik printf("---table(%d)---\n", tbl->tbl); 3872183228Srik for (a = 0; a < tbl->cnt; a++) { 3873183228Srik unsigned int tval; 3874183228Srik tval = tbl->ent[a].value; 3875187764Sluigi if (co.do_value_as_ip) { 3876183228Srik char tbuf[128]; 3877183228Srik strncpy(tbuf, inet_ntoa(*(struct in_addr *) 3878161456Sjulian &tbl->ent[a].addr), 127); 3879183228Srik /* inet_ntoa expects network order */ 3880183228Srik tval = htonl(tval); 3881183228Srik printf("%s/%u %s\n", tbuf, tbl->ent[a].masklen, 3882183228Srik inet_ntoa(*(struct in_addr *)&tval)); 3883183228Srik } else { 3884183228Srik printf("%s/%u %u\n", 3885183228Srik inet_ntoa(*(struct in_addr *)&tbl->ent[a].addr), 3886183228Srik tbl->ent[a].masklen, tval); 3887130281Sru } 3888183228Srik } 3889183228Srik free(tbl); 3890130281Sru} 3891