ipfw2.c revision 200567
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 200567 2009-12-15 09:46:27Z luigi $ 2198943Sluigi */ 2298943Sluigi 23187604Sluigi#include <sys/types.h> 2498943Sluigi#include <sys/socket.h> 2598943Sluigi#include <sys/sockio.h> 2698943Sluigi#include <sys/sysctl.h> 2798943Sluigi 28187767Sluigi#include "ipfw2.h" 29187767Sluigi 3098943Sluigi#include <ctype.h> 3198943Sluigi#include <err.h> 3298943Sluigi#include <errno.h> 3398943Sluigi#include <grp.h> 3498943Sluigi#include <netdb.h> 3598943Sluigi#include <pwd.h> 3698943Sluigi#include <stdio.h> 3798943Sluigi#include <stdlib.h> 3898943Sluigi#include <string.h> 3998943Sluigi#include <sysexits.h> 40187983Sluigi#include <time.h> /* ctime */ 41187604Sluigi#include <timeconv.h> /* _long_to_time */ 42136071Sgreen#include <unistd.h> 43136071Sgreen#include <fcntl.h> 4498943Sluigi 45169424Smaxim#include <net/ethernet.h> 46187983Sluigi#include <net/if.h> /* only IFNAMSIZ */ 4798943Sluigi#include <netinet/in.h> 48187983Sluigi#include <netinet/in_systm.h> /* only n_short, n_long */ 4998943Sluigi#include <netinet/ip.h> 5098943Sluigi#include <netinet/ip_icmp.h> 5198943Sluigi#include <netinet/ip_fw.h> 5298943Sluigi#include <netinet/tcp.h> 5398943Sluigi#include <arpa/inet.h> 5498943Sluigi 55187767Sluigistruct cmdline_opts co; /* global options */ 5698943Sluigi 57187767Sluigiint resvd_set_number = RESVD_SET; 58187764Sluigi 59159636Soleg#define GET_UINT_ARG(arg, min, max, tok, s_x) do { \ 60159636Soleg if (!ac) \ 61159636Soleg errx(EX_USAGE, "%s: missing argument", match_value(s_x, tok)); \ 62159636Soleg if (_substrcmp(*av, "tablearg") == 0) { \ 63159636Soleg arg = IP_FW_TABLEARG; \ 64159636Soleg break; \ 65159636Soleg } \ 66159636Soleg \ 67159636Soleg { \ 68159636Soleg long val; \ 69159636Soleg char *end; \ 70159636Soleg \ 71159636Soleg val = strtol(*av, &end, 10); \ 72159636Soleg \ 73159636Soleg if (!isdigit(**av) || *end != '\0' || (val == 0 && errno == EINVAL)) \ 74159636Soleg errx(EX_DATAERR, "%s: invalid argument: %s", \ 75159636Soleg match_value(s_x, tok), *av); \ 76159636Soleg \ 77159636Soleg if (errno == ERANGE || val < min || val > max) \ 78159636Soleg errx(EX_DATAERR, "%s: argument is out of range (%u..%u): %s", \ 79159636Soleg match_value(s_x, tok), min, max, *av); \ 80159636Soleg \ 81159636Soleg if (val == IP_FW_TABLEARG) \ 82159636Soleg errx(EX_DATAERR, "%s: illegal argument value: %s", \ 83159636Soleg match_value(s_x, tok), *av); \ 84159636Soleg arg = val; \ 85159636Soleg } \ 86158879Soleg} while (0) 87158879Soleg 88187762Sluigistatic void 89187762SluigiPRINT_UINT_ARG(const char *str, uint32_t arg) 90187762Sluigi{ 91187762Sluigi if (str != NULL) 92187762Sluigi printf("%s",str); 93187762Sluigi if (arg == IP_FW_TABLEARG) 94187762Sluigi printf("tablearg"); 95187762Sluigi else 96187762Sluigi printf("%u", arg); 97187762Sluigi} 98159636Soleg 9998943Sluigistatic struct _s_x f_tcpflags[] = { 10098943Sluigi { "syn", TH_SYN }, 10198943Sluigi { "fin", TH_FIN }, 10298943Sluigi { "ack", TH_ACK }, 10398943Sluigi { "psh", TH_PUSH }, 10498943Sluigi { "rst", TH_RST }, 10598943Sluigi { "urg", TH_URG }, 10698943Sluigi { "tcp flag", 0 }, 10798943Sluigi { NULL, 0 } 10898943Sluigi}; 10998943Sluigi 11098943Sluigistatic struct _s_x f_tcpopts[] = { 11198943Sluigi { "mss", IP_FW_TCPOPT_MSS }, 11298943Sluigi { "maxseg", IP_FW_TCPOPT_MSS }, 11398943Sluigi { "window", IP_FW_TCPOPT_WINDOW }, 11498943Sluigi { "sack", IP_FW_TCPOPT_SACK }, 11598943Sluigi { "ts", IP_FW_TCPOPT_TS }, 11698943Sluigi { "timestamp", IP_FW_TCPOPT_TS }, 11798943Sluigi { "cc", IP_FW_TCPOPT_CC }, 11898943Sluigi { "tcp option", 0 }, 11998943Sluigi { NULL, 0 } 12098943Sluigi}; 12198943Sluigi 12298943Sluigi/* 12398943Sluigi * IP options span the range 0 to 255 so we need to remap them 12498943Sluigi * (though in fact only the low 5 bits are significant). 12598943Sluigi */ 12698943Sluigistatic struct _s_x f_ipopts[] = { 12798943Sluigi { "ssrr", IP_FW_IPOPT_SSRR}, 12898943Sluigi { "lsrr", IP_FW_IPOPT_LSRR}, 12998943Sluigi { "rr", IP_FW_IPOPT_RR}, 13098943Sluigi { "ts", IP_FW_IPOPT_TS}, 13198943Sluigi { "ip option", 0 }, 13298943Sluigi { NULL, 0 } 13398943Sluigi}; 13498943Sluigi 13598943Sluigistatic struct _s_x f_iptos[] = { 13698943Sluigi { "lowdelay", IPTOS_LOWDELAY}, 13798943Sluigi { "throughput", IPTOS_THROUGHPUT}, 13898943Sluigi { "reliability", IPTOS_RELIABILITY}, 13998943Sluigi { "mincost", IPTOS_MINCOST}, 140172801Srpaulo { "congestion", IPTOS_ECN_CE}, 141172801Srpaulo { "ecntransport", IPTOS_ECN_ECT0}, 14298943Sluigi { "ip tos option", 0}, 14398943Sluigi { NULL, 0 } 14498943Sluigi}; 14598943Sluigi 14698943Sluigistatic struct _s_x limit_masks[] = { 14798943Sluigi {"all", DYN_SRC_ADDR|DYN_SRC_PORT|DYN_DST_ADDR|DYN_DST_PORT}, 14898943Sluigi {"src-addr", DYN_SRC_ADDR}, 14998943Sluigi {"src-port", DYN_SRC_PORT}, 15098943Sluigi {"dst-addr", DYN_DST_ADDR}, 15198943Sluigi {"dst-port", DYN_DST_PORT}, 15298943Sluigi {NULL, 0} 15398943Sluigi}; 15498943Sluigi 15598943Sluigi/* 15698943Sluigi * we use IPPROTO_ETHERTYPE as a fake protocol id to call the print routines 15798943Sluigi * This is only used in this code. 15898943Sluigi */ 15998943Sluigi#define IPPROTO_ETHERTYPE 0x1000 16098943Sluigistatic struct _s_x ether_types[] = { 16198943Sluigi /* 16298943Sluigi * Note, we cannot use "-:&/" in the names because they are field 16398943Sluigi * separators in the type specifications. Also, we use s = NULL as 16498943Sluigi * end-delimiter, because a type of 0 can be legal. 16598943Sluigi */ 16698943Sluigi { "ip", 0x0800 }, 16798943Sluigi { "ipv4", 0x0800 }, 16898943Sluigi { "ipv6", 0x86dd }, 16998943Sluigi { "arp", 0x0806 }, 17098943Sluigi { "rarp", 0x8035 }, 17198943Sluigi { "vlan", 0x8100 }, 17298943Sluigi { "loop", 0x9000 }, 17398943Sluigi { "trail", 0x1000 }, 17498943Sluigi { "at", 0x809b }, 17598943Sluigi { "atalk", 0x809b }, 17698943Sluigi { "aarp", 0x80f3 }, 17798943Sluigi { "pppoe_disc", 0x8863 }, 17898943Sluigi { "pppoe_sess", 0x8864 }, 17998943Sluigi { "ipx_8022", 0x00E0 }, 18098943Sluigi { "ipx_8023", 0x0000 }, 18198943Sluigi { "ipx_ii", 0x8137 }, 18298943Sluigi { "ipx_snap", 0x8137 }, 18398943Sluigi { "ipx", 0x8137 }, 18498943Sluigi { "ns", 0x0600 }, 18598943Sluigi { NULL, 0 } 18698943Sluigi}; 18798943Sluigi 18898943Sluigi 189187769Sluigistatic struct _s_x rule_actions[] = { 19098943Sluigi { "accept", TOK_ACCEPT }, 19198943Sluigi { "pass", TOK_ACCEPT }, 19298943Sluigi { "allow", TOK_ACCEPT }, 19398943Sluigi { "permit", TOK_ACCEPT }, 19498943Sluigi { "count", TOK_COUNT }, 19598943Sluigi { "pipe", TOK_PIPE }, 19698943Sluigi { "queue", TOK_QUEUE }, 19798943Sluigi { "divert", TOK_DIVERT }, 19898943Sluigi { "tee", TOK_TEE }, 199141351Sglebius { "netgraph", TOK_NETGRAPH }, 200141351Sglebius { "ngtee", TOK_NGTEE }, 20198943Sluigi { "fwd", TOK_FORWARD }, 20298943Sluigi { "forward", TOK_FORWARD }, 20398943Sluigi { "skipto", TOK_SKIPTO }, 20498943Sluigi { "deny", TOK_DENY }, 20598943Sluigi { "drop", TOK_DENY }, 20698943Sluigi { "reject", TOK_REJECT }, 207149020Sbz { "reset6", TOK_RESET6 }, 20898943Sluigi { "reset", TOK_RESET }, 209149020Sbz { "unreach6", TOK_UNREACH6 }, 21099475Sluigi { "unreach", TOK_UNREACH }, 21198943Sluigi { "check-state", TOK_CHECKSTATE }, 212117469Sluigi { "//", TOK_COMMENT }, 213165648Spiso { "nat", TOK_NAT }, 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, 234200567Sluigi TOK_UID, TOK_JAIL, -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 }, 26198943Sluigi { "iptos", TOK_IPTOS }, 26298943Sluigi { "ipttl", TOK_IPTTL }, 26398943Sluigi { "ipversion", TOK_IPVER }, 26498943Sluigi { "ipver", TOK_IPVER }, 26598943Sluigi { "estab", TOK_ESTAB }, 26698943Sluigi { "established", TOK_ESTAB }, 26798943Sluigi { "setup", TOK_SETUP }, 268136075Sgreen { "tcpdatalen", TOK_TCPDATALEN }, 26998943Sluigi { "tcpflags", TOK_TCPFLAGS }, 27098943Sluigi { "tcpflgs", TOK_TCPFLAGS }, 27198943Sluigi { "tcpoptions", TOK_TCPOPTS }, 27298943Sluigi { "tcpopts", TOK_TCPOPTS }, 27398943Sluigi { "tcpseq", TOK_TCPSEQ }, 27498943Sluigi { "tcpack", TOK_TCPACK }, 27598943Sluigi { "tcpwin", TOK_TCPWIN }, 27699909Sluigi { "icmptype", TOK_ICMPTYPES }, 27798943Sluigi { "icmptypes", TOK_ICMPTYPES }, 278102087Sluigi { "dst-ip", TOK_DSTIP }, 279102087Sluigi { "src-ip", TOK_SRCIP }, 280102087Sluigi { "dst-port", TOK_DSTPORT }, 281102087Sluigi { "src-port", TOK_SRCPORT }, 282102087Sluigi { "proto", TOK_PROTO }, 283102087Sluigi { "MAC", TOK_MAC }, 284102087Sluigi { "mac", TOK_MAC }, 285102087Sluigi { "mac-type", TOK_MACTYPE }, 286112250Scjc { "verrevpath", TOK_VERREVPATH }, 287128575Sandre { "versrcreach", TOK_VERSRCREACH }, 288133387Sandre { "antispoof", TOK_ANTISPOOF }, 289117241Sluigi { "ipsec", TOK_IPSEC }, 290145246Sbrooks { "icmp6type", TOK_ICMP6TYPES }, 291145246Sbrooks { "icmp6types", TOK_ICMP6TYPES }, 292145246Sbrooks { "ext6hdr", TOK_EXT6HDR}, 293145246Sbrooks { "flow-id", TOK_FLOWID}, 294145246Sbrooks { "ipv6", TOK_IPV6}, 295145246Sbrooks { "ip6", TOK_IPV6}, 296146894Smlaier { "ipv4", TOK_IPV4}, 297146894Smlaier { "ip4", TOK_IPV4}, 298145246Sbrooks { "dst-ipv6", TOK_DSTIP6}, 299145246Sbrooks { "dst-ip6", TOK_DSTIP6}, 300145246Sbrooks { "src-ipv6", TOK_SRCIP6}, 301145246Sbrooks { "src-ip6", TOK_SRCIP6}, 302200567Sluigi { "lookup", TOK_LOOKUP}, 303117469Sluigi { "//", TOK_COMMENT }, 30498943Sluigi 30598943Sluigi { "not", TOK_NOT }, /* pseudo option */ 30698943Sluigi { "!", /* escape ? */ TOK_NOT }, /* pseudo option */ 30798943Sluigi { "or", TOK_OR }, /* pseudo option */ 30898943Sluigi { "|", /* escape */ TOK_OR }, /* pseudo option */ 309101641Sluigi { "{", TOK_STARTBRACE }, /* pseudo option */ 310101641Sluigi { "(", TOK_STARTBRACE }, /* pseudo option */ 311101641Sluigi { "}", TOK_ENDBRACE }, /* pseudo option */ 312101641Sluigi { ")", TOK_ENDBRACE }, /* pseudo option */ 313117328Sluigi { NULL, 0 } /* terminator */ 31498943Sluigi}; 31598943Sluigi 316187787Sluigi/* 317187787Sluigi * The following is used to generate a printable argument for 318187787Sluigi * 64-bit numbers, irrespective of platform alignment and bit size. 319187787Sluigi * Because all the printf in this program use %llu as a format, 320187787Sluigi * we just return an unsigned long long, which is larger than 321187787Sluigi * we need in certain cases, but saves the hassle of using 322187787Sluigi * PRIu64 as a format specifier. 323187787Sluigi * We don't care about inlining, this is not performance critical code. 324187787Sluigi */ 325187787Sluigiunsigned long long 326187787Sluigialign_uint64(const uint64_t *pll) 327187787Sluigi{ 328117328Sluigi uint64_t ret; 329115793Sticso 330115793Sticso bcopy (pll, &ret, sizeof(ret)); 331115793Sticso return ret; 332129389Sstefanf} 333115793Sticso 334187767Sluigivoid * 335187716Sluigisafe_calloc(size_t number, size_t size) 336187716Sluigi{ 337187716Sluigi void *ret = calloc(number, size); 338187716Sluigi 339187716Sluigi if (ret == NULL) 340187716Sluigi err(EX_OSERR, "calloc"); 341187716Sluigi return ret; 342187716Sluigi} 343187716Sluigi 344187767Sluigivoid * 345187716Sluigisafe_realloc(void *ptr, size_t size) 346187716Sluigi{ 347187716Sluigi void *ret = realloc(ptr, size); 348187716Sluigi 349187716Sluigi if (ret == NULL) 350187716Sluigi err(EX_OSERR, "realloc"); 351187716Sluigi return ret; 352187716Sluigi} 353187716Sluigi 354117328Sluigi/* 355117328Sluigi * conditionally runs the command. 356117328Sluigi */ 357187769Sluigiint 358119740Stmmdo_cmd(int optname, void *optval, uintptr_t optlen) 359117328Sluigi{ 360117328Sluigi static int s = -1; /* the socket */ 361117328Sluigi int i; 362117577Sluigi 363187764Sluigi if (co.test_only) 364117328Sluigi return 0; 365117328Sluigi 366117328Sluigi if (s == -1) 367117328Sluigi s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); 368117328Sluigi if (s < 0) 369117328Sluigi err(EX_UNAVAILABLE, "socket"); 370117328Sluigi 371117328Sluigi if (optname == IP_FW_GET || optname == IP_DUMMYNET_GET || 372130281Sru optname == IP_FW_ADD || optname == IP_FW_TABLE_LIST || 373165648Spiso optname == IP_FW_TABLE_GETSIZE || 374165648Spiso optname == IP_FW_NAT_GET_CONFIG || 375165648Spiso optname == IP_FW_NAT_GET_LOG) 376117328Sluigi i = getsockopt(s, IPPROTO_IP, optname, optval, 377117328Sluigi (socklen_t *)optlen); 378117328Sluigi else 379117328Sluigi i = setsockopt(s, IPPROTO_IP, optname, optval, optlen); 380117328Sluigi return i; 381117328Sluigi} 382117328Sluigi 38398943Sluigi/** 38498943Sluigi * match_token takes a table and a string, returns the value associated 385117328Sluigi * with the string (-1 in case of failure). 38698943Sluigi */ 387187769Sluigiint 38898943Sluigimatch_token(struct _s_x *table, char *string) 38998943Sluigi{ 39098943Sluigi struct _s_x *pt; 391117469Sluigi uint i = strlen(string); 39298943Sluigi 39398943Sluigi for (pt = table ; i && pt->s != NULL ; pt++) 39498943Sluigi if (strlen(pt->s) == i && !bcmp(string, pt->s, i)) 39598943Sluigi return pt->x; 39698943Sluigi return -1; 397129389Sstefanf} 39898943Sluigi 399117328Sluigi/** 400117328Sluigi * match_value takes a table and a value, returns the string associated 401117328Sluigi * with the value (NULL in case of failure). 402117328Sluigi */ 403187770Sluigichar const * 404117469Sluigimatch_value(struct _s_x *p, int value) 40598943Sluigi{ 40698943Sluigi for (; p->s != NULL; p++) 40798943Sluigi if (p->x == value) 40898943Sluigi return p->s; 40998943Sluigi return NULL; 41098943Sluigi} 41198943Sluigi 41298943Sluigi/* 413140271Sbrooks * _substrcmp takes two strings and returns 1 if they do not match, 414140271Sbrooks * and 0 if they match exactly or the first string is a sub-string 415140271Sbrooks * of the second. A warning is printed to stderr in the case that the 416140271Sbrooks * first string is a sub-string of the second. 417140271Sbrooks * 418140271Sbrooks * This function will be removed in the future through the usual 419140271Sbrooks * deprecation process. 420140271Sbrooks */ 421187767Sluigiint 422140271Sbrooks_substrcmp(const char *str1, const char* str2) 423140271Sbrooks{ 424140271Sbrooks 425140271Sbrooks if (strncmp(str1, str2, strlen(str1)) != 0) 426140271Sbrooks return 1; 427140271Sbrooks 428140271Sbrooks if (strlen(str1) != strlen(str2)) 429140271Sbrooks warnx("DEPRECATED: '%s' matched '%s' as a sub-string", 430140271Sbrooks str1, str2); 431140271Sbrooks return 0; 432140271Sbrooks} 433140271Sbrooks 434140271Sbrooks/* 435140271Sbrooks * _substrcmp2 takes three strings and returns 1 if the first two do not match, 436140271Sbrooks * and 0 if they match exactly or the second string is a sub-string 437140271Sbrooks * of the first. A warning is printed to stderr in the case that the 438140271Sbrooks * first string does not match the third. 439140271Sbrooks * 440140271Sbrooks * This function exists to warn about the bizzare construction 441140271Sbrooks * strncmp(str, "by", 2) which is used to allow people to use a shotcut 442140271Sbrooks * for "bytes". The problem is that in addition to accepting "by", 443140271Sbrooks * "byt", "byte", and "bytes", it also excepts "by_rabid_dogs" and any 444140271Sbrooks * other string beginning with "by". 445140271Sbrooks * 446140271Sbrooks * This function will be removed in the future through the usual 447140271Sbrooks * deprecation process. 448140271Sbrooks */ 449187769Sluigiint 450140271Sbrooks_substrcmp2(const char *str1, const char* str2, const char* str3) 451140271Sbrooks{ 452140271Sbrooks 453140271Sbrooks if (strncmp(str1, str2, strlen(str2)) != 0) 454140271Sbrooks return 1; 455140271Sbrooks 456140271Sbrooks if (strcmp(str1, str3) != 0) 457140271Sbrooks warnx("DEPRECATED: '%s' matched '%s'", 458140271Sbrooks str1, str3); 459140271Sbrooks return 0; 460140271Sbrooks} 461140271Sbrooks 462140271Sbrooks/* 46398943Sluigi * prints one port, symbolic or numeric 46498943Sluigi */ 46598943Sluigistatic void 466117328Sluigiprint_port(int proto, uint16_t port) 46798943Sluigi{ 46898943Sluigi 46998943Sluigi if (proto == IPPROTO_ETHERTYPE) { 470117469Sluigi char const *s; 47198943Sluigi 472187764Sluigi if (co.do_resolv && (s = match_value(ether_types, port)) ) 47398943Sluigi printf("%s", s); 47498943Sluigi else 47598943Sluigi printf("0x%04x", port); 47698943Sluigi } else { 47798943Sluigi struct servent *se = NULL; 478187764Sluigi if (co.do_resolv) { 47998943Sluigi struct protoent *pe = getprotobynumber(proto); 48098943Sluigi 48198943Sluigi se = getservbyport(htons(port), pe ? pe->p_name : NULL); 48298943Sluigi } 48398943Sluigi if (se) 48498943Sluigi printf("%s", se->s_name); 48598943Sluigi else 48698943Sluigi printf("%d", port); 48798943Sluigi } 48898943Sluigi} 48998943Sluigi 490187769Sluigistatic struct _s_x _port_name[] = { 491117328Sluigi {"dst-port", O_IP_DSTPORT}, 492117328Sluigi {"src-port", O_IP_SRCPORT}, 493117328Sluigi {"ipid", O_IPID}, 494117328Sluigi {"iplen", O_IPLEN}, 495117328Sluigi {"ipttl", O_IPTTL}, 496117328Sluigi {"mac-type", O_MAC_TYPE}, 497136075Sgreen {"tcpdatalen", O_TCPDATALEN}, 498158879Soleg {"tagged", O_TAGGED}, 499117328Sluigi {NULL, 0} 500117328Sluigi}; 501117328Sluigi 50298943Sluigi/* 503117328Sluigi * Print the values in a list 16-bit items of the types above. 50498943Sluigi * XXX todo: add support for mask. 50598943Sluigi */ 50698943Sluigistatic void 507102087Sluigiprint_newports(ipfw_insn_u16 *cmd, int proto, int opcode) 50898943Sluigi{ 509117328Sluigi uint16_t *p = cmd->ports; 51098943Sluigi int i; 511117469Sluigi char const *sep; 51298943Sluigi 513116690Sluigi if (opcode != 0) { 514117328Sluigi sep = match_value(_port_name, opcode); 515117328Sluigi if (sep == NULL) 516116690Sluigi sep = "???"; 517116690Sluigi printf (" %s", sep); 518116690Sluigi } 519116690Sluigi sep = " "; 52098943Sluigi for (i = F_LEN((ipfw_insn *)cmd) - 1; i > 0; i--, p += 2) { 521193702Sluigi printf("%s", sep); 52298943Sluigi print_port(proto, p[0]); 52398943Sluigi if (p[0] != p[1]) { 52498943Sluigi printf("-"); 52598943Sluigi print_port(proto, p[1]); 52698943Sluigi } 52798943Sluigi sep = ","; 52898943Sluigi } 52998943Sluigi} 53098943Sluigi 53198943Sluigi/* 53298943Sluigi * Like strtol, but also translates service names into port numbers 53398943Sluigi * for some protocols. 53498943Sluigi * In particular: 53598943Sluigi * proto == -1 disables the protocol check; 53698943Sluigi * proto == IPPROTO_ETHERTYPE looks up an internal table 53798943Sluigi * proto == <some value in /etc/protocols> matches the values there. 538101628Sluigi * Returns *end == s in case the parameter is not found. 53998943Sluigi */ 54098943Sluigistatic int 54198943Sluigistrtoport(char *s, char **end, int base, int proto) 54298943Sluigi{ 543101628Sluigi char *p, *buf; 544101628Sluigi char *s1; 54598943Sluigi int i; 54698943Sluigi 547101628Sluigi *end = s; /* default - not found */ 548117577Sluigi if (*s == '\0') 549101628Sluigi return 0; /* not found */ 550106505Smaxim 55198943Sluigi if (isdigit(*s)) 55298943Sluigi return strtol(s, end, base); 55398943Sluigi 55498943Sluigi /* 555101628Sluigi * find separator. '\\' escapes the next char. 55698943Sluigi */ 557101628Sluigi for (s1 = s; *s1 && (isalnum(*s1) || *s1 == '\\') ; s1++) 558101628Sluigi if (*s1 == '\\' && s1[1] != '\0') 559101628Sluigi s1++; 56098943Sluigi 561187716Sluigi buf = safe_calloc(s1 - s + 1, 1); 562101628Sluigi 563101628Sluigi /* 564101628Sluigi * copy into a buffer skipping backslashes 565101628Sluigi */ 566101628Sluigi for (p = s, i = 0; p != s1 ; p++) 567117577Sluigi if (*p != '\\') 568101628Sluigi buf[i++] = *p; 569101628Sluigi buf[i++] = '\0'; 570101628Sluigi 57198943Sluigi if (proto == IPPROTO_ETHERTYPE) { 572101628Sluigi i = match_token(ether_types, buf); 573101628Sluigi free(buf); 574101628Sluigi if (i != -1) { /* found */ 57598943Sluigi *end = s1; 57698943Sluigi return i; 57798943Sluigi } 57898943Sluigi } else { 57998943Sluigi struct protoent *pe = NULL; 58098943Sluigi struct servent *se; 58198943Sluigi 58298943Sluigi if (proto != 0) 58398943Sluigi pe = getprotobynumber(proto); 58498943Sluigi setservent(1); 585101628Sluigi se = getservbyname(buf, pe ? pe->p_name : NULL); 586101628Sluigi free(buf); 58798943Sluigi if (se != NULL) { 58898943Sluigi *end = s1; 58998943Sluigi return ntohs(se->s_port); 59098943Sluigi } 59198943Sluigi } 592101628Sluigi return 0; /* not found */ 59398943Sluigi} 59498943Sluigi 59598943Sluigi/* 596117328Sluigi * Fill the body of the command with the list of port ranges. 59798943Sluigi */ 59898943Sluigistatic int 59998943Sluigifill_newports(ipfw_insn_u16 *cmd, char *av, int proto) 60098943Sluigi{ 601117328Sluigi uint16_t a, b, *p = cmd->ports; 60298943Sluigi int i = 0; 603102087Sluigi char *s = av; 60498943Sluigi 605102087Sluigi while (*s) { 60698943Sluigi a = strtoport(av, &s, 0, proto); 607159636Soleg if (s == av) /* empty or invalid argument */ 608159636Soleg return (0); 609159636Soleg 610159636Soleg switch (*s) { 611159636Soleg case '-': /* a range */ 612159636Soleg av = s + 1; 61398943Sluigi b = strtoport(av, &s, 0, proto); 614159636Soleg /* Reject expressions like '1-abc' or '1-2-3'. */ 615159636Soleg if (s == av || (*s != ',' && *s != '\0')) 616159636Soleg return (0); 61798943Sluigi p[0] = a; 61898943Sluigi p[1] = b; 619159636Soleg break; 620159636Soleg case ',': /* comma separated list */ 621159636Soleg case '\0': 62298943Sluigi p[0] = p[1] = a; 623159636Soleg break; 624159636Soleg default: 625159636Soleg warnx("port list: invalid separator <%c> in <%s>", 626101978Sluigi *s, av); 627159636Soleg return (0); 628159636Soleg } 629159636Soleg 630102087Sluigi i++; 631102087Sluigi p += 2; 632159636Soleg av = s + 1; 63398943Sluigi } 63498943Sluigi if (i > 0) { 635159636Soleg if (i + 1 > F_LEN_MASK) 636102087Sluigi errx(EX_DATAERR, "too many ports/ranges\n"); 637159636Soleg cmd->o.len |= i + 1; /* leave F_NOT and F_OR untouched */ 63898943Sluigi } 639159636Soleg return (i); 64098943Sluigi} 64198943Sluigi 64298943Sluigistatic struct _s_x icmpcodes[] = { 64398943Sluigi { "net", ICMP_UNREACH_NET }, 64498943Sluigi { "host", ICMP_UNREACH_HOST }, 64598943Sluigi { "protocol", ICMP_UNREACH_PROTOCOL }, 64698943Sluigi { "port", ICMP_UNREACH_PORT }, 64798943Sluigi { "needfrag", ICMP_UNREACH_NEEDFRAG }, 64898943Sluigi { "srcfail", ICMP_UNREACH_SRCFAIL }, 64998943Sluigi { "net-unknown", ICMP_UNREACH_NET_UNKNOWN }, 65098943Sluigi { "host-unknown", ICMP_UNREACH_HOST_UNKNOWN }, 65198943Sluigi { "isolated", ICMP_UNREACH_ISOLATED }, 65298943Sluigi { "net-prohib", ICMP_UNREACH_NET_PROHIB }, 65398943Sluigi { "host-prohib", ICMP_UNREACH_HOST_PROHIB }, 65498943Sluigi { "tosnet", ICMP_UNREACH_TOSNET }, 65598943Sluigi { "toshost", ICMP_UNREACH_TOSHOST }, 65698943Sluigi { "filter-prohib", ICMP_UNREACH_FILTER_PROHIB }, 65798943Sluigi { "host-precedence", ICMP_UNREACH_HOST_PRECEDENCE }, 65898943Sluigi { "precedence-cutoff", ICMP_UNREACH_PRECEDENCE_CUTOFF }, 65998943Sluigi { NULL, 0 } 66098943Sluigi}; 66198943Sluigi 66298943Sluigistatic void 66398943Sluigifill_reject_code(u_short *codep, char *str) 66498943Sluigi{ 66598943Sluigi int val; 66698943Sluigi char *s; 66798943Sluigi 66898943Sluigi val = strtoul(str, &s, 0); 66998943Sluigi if (s == str || *s != '\0' || val >= 0x100) 67098943Sluigi val = match_token(icmpcodes, str); 671102087Sluigi if (val < 0) 67298943Sluigi errx(EX_DATAERR, "unknown ICMP unreachable code ``%s''", str); 67398943Sluigi *codep = val; 67498943Sluigi return; 67598943Sluigi} 67698943Sluigi 67798943Sluigistatic void 678117328Sluigiprint_reject_code(uint16_t code) 67998943Sluigi{ 680117469Sluigi char const *s = match_value(icmpcodes, code); 68198943Sluigi 68298943Sluigi if (s != NULL) 68399475Sluigi printf("unreach %s", s); 68498943Sluigi else 68599475Sluigi printf("unreach %u", code); 68698943Sluigi} 68798943Sluigi 68898943Sluigi/* 68998943Sluigi * Returns the number of bits set (from left) in a contiguous bitmask, 69098943Sluigi * or -1 if the mask is not contiguous. 69198943Sluigi * XXX this needs a proper fix. 69298943Sluigi * This effectively works on masks in big-endian (network) format. 69398943Sluigi * when compiled on little endian architectures. 69498943Sluigi * 69598943Sluigi * First bit is bit 7 of the first byte -- note, for MAC addresses, 69698943Sluigi * the first bit on the wire is bit 0 of the first byte. 69798943Sluigi * len is the max length in bits. 69898943Sluigi */ 699187770Sluigiint 700117577Sluigicontigmask(uint8_t *p, int len) 70198943Sluigi{ 70298943Sluigi int i, n; 703117577Sluigi 70498943Sluigi for (i=0; i<len ; i++) 70598943Sluigi if ( (p[i/8] & (1 << (7 - (i%8)))) == 0) /* first bit unset */ 70698943Sluigi break; 70798943Sluigi for (n=i+1; n < len; n++) 70898943Sluigi if ( (p[n/8] & (1 << (7 - (n%8)))) != 0) 70998943Sluigi return -1; /* mask not contiguous */ 71098943Sluigi return i; 71198943Sluigi} 71298943Sluigi 71398943Sluigi/* 71498943Sluigi * print flags set/clear in the two bitmasks passed as parameters. 71598943Sluigi * There is a specialized check for f_tcpflags. 71698943Sluigi */ 71798943Sluigistatic void 718117469Sluigiprint_flags(char const *name, ipfw_insn *cmd, struct _s_x *list) 71998943Sluigi{ 720117469Sluigi char const *comma = ""; 72198943Sluigi int i; 722117577Sluigi uint8_t set = cmd->arg1 & 0xff; 723117577Sluigi uint8_t clear = (cmd->arg1 >> 8) & 0xff; 72498943Sluigi 72598943Sluigi if (list == f_tcpflags && set == TH_SYN && clear == TH_ACK) { 72698943Sluigi printf(" setup"); 72798943Sluigi return; 72898943Sluigi } 72998943Sluigi 73098943Sluigi printf(" %s ", name); 73198943Sluigi for (i=0; list[i].x != 0; i++) { 73298943Sluigi if (set & list[i].x) { 73398943Sluigi set &= ~list[i].x; 73498943Sluigi printf("%s%s", comma, list[i].s); 73598943Sluigi comma = ","; 73698943Sluigi } 73798943Sluigi if (clear & list[i].x) { 73898943Sluigi clear &= ~list[i].x; 73998943Sluigi printf("%s!%s", comma, list[i].s); 74098943Sluigi comma = ","; 74198943Sluigi } 74298943Sluigi } 74398943Sluigi} 74498943Sluigi 74598943Sluigi/* 74698943Sluigi * Print the ip address contained in a command. 74798943Sluigi */ 74898943Sluigistatic void 749117469Sluigiprint_ip(ipfw_insn_ip *cmd, char const *s) 75098943Sluigi{ 75198943Sluigi struct hostent *he = NULL; 752117328Sluigi int len = F_LEN((ipfw_insn *)cmd); 753117328Sluigi uint32_t *a = ((ipfw_insn_u32 *)cmd)->d; 75498943Sluigi 755200567Sluigi if (cmd->o.opcode == O_IP_DST_LOOKUP && len > F_INSN_SIZE(ipfw_insn_u32)) { 756200567Sluigi uint32_t d = a[1]; 757200567Sluigi const char *arg = "<invalid>"; 758200567Sluigi 759200567Sluigi if (d < sizeof(lookup_key)/sizeof(lookup_key[0])) 760200567Sluigi arg = match_value(rule_options, lookup_key[d]); 761200567Sluigi printf("%s lookup %s %d", cmd->o.len & F_NOT ? " not": "", 762200567Sluigi arg, cmd->o.arg1); 763200567Sluigi return; 764200567Sluigi } 765102087Sluigi printf("%s%s ", cmd->o.len & F_NOT ? " not": "", s); 76698943Sluigi 76798943Sluigi if (cmd->o.opcode == O_IP_SRC_ME || cmd->o.opcode == O_IP_DST_ME) { 76898943Sluigi printf("me"); 76998943Sluigi return; 77098943Sluigi } 771130281Sru if (cmd->o.opcode == O_IP_SRC_LOOKUP || 772130281Sru cmd->o.opcode == O_IP_DST_LOOKUP) { 773130281Sru printf("table(%u", ((ipfw_insn *)cmd)->arg1); 774130281Sru if (len == F_INSN_SIZE(ipfw_insn_u32)) 775130281Sru printf(",%u", *a); 776130281Sru printf(")"); 777130281Sru return; 778130281Sru } 77998943Sluigi if (cmd->o.opcode == O_IP_SRC_SET || cmd->o.opcode == O_IP_DST_SET) { 780117328Sluigi uint32_t x, *map = (uint32_t *)&(cmd->mask); 781116716Sluigi int i, j; 78298943Sluigi char comma = '{'; 78398943Sluigi 78498943Sluigi x = cmd->o.arg1 - 1; 78598943Sluigi x = htonl( ~x ); 78698943Sluigi cmd->addr.s_addr = htonl(cmd->addr.s_addr); 78798943Sluigi printf("%s/%d", inet_ntoa(cmd->addr), 788117577Sluigi contigmask((uint8_t *)&x, 32)); 78998943Sluigi x = cmd->addr.s_addr = htonl(cmd->addr.s_addr); 79098943Sluigi x &= 0xff; /* base */ 791116716Sluigi /* 792116716Sluigi * Print bits and ranges. 793116716Sluigi * Locate first bit set (i), then locate first bit unset (j). 794116716Sluigi * If we have 3+ consecutive bits set, then print them as a 795116716Sluigi * range, otherwise only print the initial bit and rescan. 796116716Sluigi */ 79798943Sluigi for (i=0; i < cmd->o.arg1; i++) 798117328Sluigi if (map[i/32] & (1<<(i & 31))) { 799116716Sluigi for (j=i+1; j < cmd->o.arg1; j++) 800117328Sluigi if (!(map[ j/32] & (1<<(j & 31)))) 801116716Sluigi break; 80298943Sluigi printf("%c%d", comma, i+x); 803116716Sluigi if (j>i+2) { /* range has at least 3 elements */ 804116716Sluigi printf("-%d", j-1+x); 805116716Sluigi i = j-1; 806116716Sluigi } 80798943Sluigi comma = ','; 80898943Sluigi } 80998943Sluigi printf("}"); 81098943Sluigi return; 81198943Sluigi } 812117328Sluigi /* 813117328Sluigi * len == 2 indicates a single IP, whereas lists of 1 or more 814117328Sluigi * addr/mask pairs have len = (2n+1). We convert len to n so we 815117328Sluigi * use that to count the number of entries. 816117328Sluigi */ 817117328Sluigi for (len = len / 2; len > 0; len--, a += 2) { 818117328Sluigi int mb = /* mask length */ 819117328Sluigi (cmd->o.opcode == O_IP_SRC || cmd->o.opcode == O_IP_DST) ? 820117577Sluigi 32 : contigmask((uint8_t *)&(a[1]), 32); 821187764Sluigi if (mb == 32 && co.do_resolv) 822117328Sluigi he = gethostbyaddr((char *)&(a[0]), sizeof(u_long), AF_INET); 82398943Sluigi if (he != NULL) /* resolved to name */ 82498943Sluigi printf("%s", he->h_name); 82598943Sluigi else if (mb == 0) /* any */ 82698943Sluigi printf("any"); 82798943Sluigi else { /* numeric IP followed by some kind of mask */ 828117328Sluigi printf("%s", inet_ntoa( *((struct in_addr *)&a[0]) ) ); 82998943Sluigi if (mb < 0) 830117328Sluigi printf(":%s", inet_ntoa( *((struct in_addr *)&a[1]) ) ); 83198943Sluigi else if (mb < 32) 83298943Sluigi printf("/%d", mb); 83398943Sluigi } 834117328Sluigi if (len > 1) 835117328Sluigi printf(","); 836117328Sluigi } 83798943Sluigi} 83898943Sluigi 83998943Sluigi/* 84098943Sluigi * prints a MAC address/mask pair 84198943Sluigi */ 84298943Sluigistatic void 843117577Sluigiprint_mac(uint8_t *addr, uint8_t *mask) 84498943Sluigi{ 84598943Sluigi int l = contigmask(mask, 48); 84698943Sluigi 84798943Sluigi if (l == 0) 84898943Sluigi printf(" any"); 84998943Sluigi else { 85098943Sluigi printf(" %02x:%02x:%02x:%02x:%02x:%02x", 85198943Sluigi addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 85298943Sluigi if (l == -1) 85398943Sluigi printf("&%02x:%02x:%02x:%02x:%02x:%02x", 85498943Sluigi mask[0], mask[1], mask[2], 85598943Sluigi mask[3], mask[4], mask[5]); 85698943Sluigi else if (l < 48) 85798943Sluigi printf("/%d", l); 85898943Sluigi } 85998943Sluigi} 86098943Sluigi 86199475Sluigistatic void 86299475Sluigifill_icmptypes(ipfw_insn_u32 *cmd, char *av) 86399475Sluigi{ 864117328Sluigi uint8_t type; 86598943Sluigi 86699475Sluigi cmd->d[0] = 0; 86799475Sluigi while (*av) { 86899475Sluigi if (*av == ',') 86999475Sluigi av++; 87099475Sluigi 87199475Sluigi type = strtoul(av, &av, 0); 87299475Sluigi 87399475Sluigi if (*av != ',' && *av != '\0') 87499475Sluigi errx(EX_DATAERR, "invalid ICMP type"); 87599475Sluigi 87699475Sluigi if (type > 31) 87799475Sluigi errx(EX_DATAERR, "ICMP type out of range"); 87899475Sluigi 87999475Sluigi cmd->d[0] |= 1 << type; 88099475Sluigi } 88199475Sluigi cmd->o.opcode = O_ICMPTYPE; 88299475Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 88399475Sluigi} 88499475Sluigi 88599475Sluigistatic void 88699475Sluigiprint_icmptypes(ipfw_insn_u32 *cmd) 88799475Sluigi{ 88899475Sluigi int i; 88999475Sluigi char sep= ' '; 89099475Sluigi 89199475Sluigi printf(" icmptypes"); 89299475Sluigi for (i = 0; i < 32; i++) { 89399475Sluigi if ( (cmd->d[0] & (1 << (i))) == 0) 89499475Sluigi continue; 89599475Sluigi printf("%c%d", sep, i); 89699475Sluigi sep = ','; 89799475Sluigi } 89899475Sluigi} 89999475Sluigi 90098943Sluigi/* 90198943Sluigi * show_ipfw() prints the body of an ipfw rule. 90298943Sluigi * Because the standard rule has at least proto src_ip dst_ip, we use 90398943Sluigi * a helper function to produce these entries if not provided explicitly. 904102087Sluigi * The first argument is the list of fields we have, the second is 905102087Sluigi * the list of fields we want to be printed. 906101978Sluigi * 907102087Sluigi * Special cases if we have provided a MAC header: 908102087Sluigi * + if the rule does not contain IP addresses/ports, do not print them; 909102087Sluigi * + if the rule does not contain an IP proto, print "all" instead of "ip"; 910102087Sluigi * 911102087Sluigi * Once we have 'have_options', IP header fields are printed as options. 91298943Sluigi */ 913101978Sluigi#define HAVE_PROTO 0x0001 914101978Sluigi#define HAVE_SRCIP 0x0002 915101978Sluigi#define HAVE_DSTIP 0x0004 916169139Smaxim#define HAVE_PROTO4 0x0008 917169139Smaxim#define HAVE_PROTO6 0x0010 918102087Sluigi#define HAVE_OPTIONS 0x8000 91998943Sluigi 920101978Sluigi#define HAVE_IP (HAVE_PROTO | HAVE_SRCIP | HAVE_DSTIP) 92198943Sluigistatic void 922187477Sluigishow_prerequisites(int *flags, int want, int cmd __unused) 92398943Sluigi{ 924187764Sluigi if (co.comment_only) 925123495Sluigi return; 926102087Sluigi if ( (*flags & HAVE_IP) == HAVE_IP) 927102087Sluigi *flags |= HAVE_OPTIONS; 928102087Sluigi 929102087Sluigi if ( !(*flags & HAVE_OPTIONS)) { 930187477Sluigi if ( !(*flags & HAVE_PROTO) && (want & HAVE_PROTO)) { 931146894Smlaier if ( (*flags & HAVE_PROTO4)) 932146894Smlaier printf(" ip4"); 933146894Smlaier else if ( (*flags & HAVE_PROTO6)) 934146894Smlaier printf(" ip6"); 935146894Smlaier else 936146894Smlaier printf(" ip"); 937187477Sluigi } 938102087Sluigi if ( !(*flags & HAVE_SRCIP) && (want & HAVE_SRCIP)) 939102087Sluigi printf(" from any"); 940102087Sluigi if ( !(*flags & HAVE_DSTIP) && (want & HAVE_DSTIP)) 941102087Sluigi printf(" to any"); 942102087Sluigi } 94398943Sluigi *flags |= want; 94498943Sluigi} 94598943Sluigi 94698943Sluigistatic void 947112189Smaximshow_ipfw(struct ip_fw *rule, int pcwidth, int bcwidth) 94898943Sluigi{ 949107291Skeramida static int twidth = 0; 95098943Sluigi int l; 951158879Soleg ipfw_insn *cmd, *tagptr = NULL; 952187477Sluigi const char *comment = NULL; /* ptr to comment if we have one */ 95398943Sluigi int proto = 0; /* default */ 95498943Sluigi int flags = 0; /* prerequisites */ 95598943Sluigi ipfw_insn_log *logptr = NULL; /* set if we find an O_LOG */ 956136071Sgreen ipfw_insn_altq *altqptr = NULL; /* set if we find an O_ALTQ */ 95798943Sluigi int or_block = 0; /* we are in an or block */ 958117328Sluigi uint32_t set_disable; 95998943Sluigi 960115793Sticso bcopy(&rule->next_rule, &set_disable, sizeof(set_disable)); 961101628Sluigi 962101628Sluigi if (set_disable & (1 << rule->set)) { /* disabled */ 963187764Sluigi if (!co.show_sets) 964101628Sluigi return; 965101628Sluigi else 966101628Sluigi printf("# DISABLED "); 967101628Sluigi } 96898943Sluigi printf("%05u ", rule->rulenum); 96998943Sluigi 970117469Sluigi if (pcwidth>0 || bcwidth>0) 971115793Sticso printf("%*llu %*llu ", pcwidth, align_uint64(&rule->pcnt), 972115793Sticso bcwidth, align_uint64(&rule->bcnt)); 97398943Sluigi 974187764Sluigi if (co.do_time == 2) 975117472Sluigi printf("%10u ", rule->timestamp); 976187764Sluigi else if (co.do_time == 1) { 977107291Skeramida char timestr[30]; 978107291Skeramida time_t t = (time_t)0; 979107291Skeramida 980107291Skeramida if (twidth == 0) { 981107291Skeramida strcpy(timestr, ctime(&t)); 982107291Skeramida *strchr(timestr, '\n') = '\0'; 983107291Skeramida twidth = strlen(timestr); 984107291Skeramida } 98598943Sluigi if (rule->timestamp) { 986107291Skeramida t = _long_to_time(rule->timestamp); 98798943Sluigi 98898943Sluigi strcpy(timestr, ctime(&t)); 98998943Sluigi *strchr(timestr, '\n') = '\0'; 99098943Sluigi printf("%s ", timestr); 99198943Sluigi } else { 992107291Skeramida printf("%*s", twidth, " "); 99398943Sluigi } 99498943Sluigi } 99598943Sluigi 996187764Sluigi if (co.show_sets) 997101628Sluigi printf("set %d ", rule->set); 998101628Sluigi 99998943Sluigi /* 1000107289Sluigi * print the optional "match probability" 1001107289Sluigi */ 1002107289Sluigi if (rule->cmd_len > 0) { 1003107289Sluigi cmd = rule->cmd ; 1004107289Sluigi if (cmd->opcode == O_PROB) { 1005107289Sluigi ipfw_insn_u32 *p = (ipfw_insn_u32 *)cmd; 1006107289Sluigi double d = 1.0 * p->d[0]; 1007107289Sluigi 1008107289Sluigi d = (d / 0x7fffffff); 1009107289Sluigi printf("prob %f ", d); 1010107289Sluigi } 1011107289Sluigi } 1012107289Sluigi 1013107289Sluigi /* 101498943Sluigi * first print actions 101598943Sluigi */ 101698943Sluigi for (l = rule->cmd_len - rule->act_ofs, cmd = ACTION_PTR(rule); 101798943Sluigi l > 0 ; l -= F_LEN(cmd), cmd += F_LEN(cmd)) { 101898943Sluigi switch(cmd->opcode) { 101998943Sluigi case O_CHECK_STATE: 102098943Sluigi printf("check-state"); 1021102087Sluigi flags = HAVE_IP; /* avoid printing anything else */ 102298943Sluigi break; 102398943Sluigi 102498943Sluigi case O_ACCEPT: 102598943Sluigi printf("allow"); 102698943Sluigi break; 102798943Sluigi 102898943Sluigi case O_COUNT: 102998943Sluigi printf("count"); 103098943Sluigi break; 103198943Sluigi 103298943Sluigi case O_DENY: 103398943Sluigi printf("deny"); 103498943Sluigi break; 103598943Sluigi 103699475Sluigi case O_REJECT: 103799475Sluigi if (cmd->arg1 == ICMP_REJECT_RST) 103899475Sluigi printf("reset"); 103999475Sluigi else if (cmd->arg1 == ICMP_UNREACH_HOST) 104099475Sluigi printf("reject"); 104199475Sluigi else 104299475Sluigi print_reject_code(cmd->arg1); 104399475Sluigi break; 104499475Sluigi 1045149020Sbz case O_UNREACH6: 1046149020Sbz if (cmd->arg1 == ICMP6_UNREACH_RST) 1047149020Sbz printf("reset6"); 1048149020Sbz else 1049149020Sbz print_unreach6_code(cmd->arg1); 1050149020Sbz break; 1051149020Sbz 1052159636Soleg case O_SKIPTO: 1053159636Soleg PRINT_UINT_ARG("skipto ", cmd->arg1); 105498943Sluigi break; 105598943Sluigi 105698943Sluigi case O_PIPE: 1057159636Soleg PRINT_UINT_ARG("pipe ", cmd->arg1); 1058159636Soleg break; 1059159636Soleg 106098943Sluigi case O_QUEUE: 1061159636Soleg PRINT_UINT_ARG("queue ", cmd->arg1); 1062159636Soleg break; 1063159636Soleg 106498943Sluigi case O_DIVERT: 1065159636Soleg PRINT_UINT_ARG("divert ", cmd->arg1); 1066159636Soleg break; 1067159636Soleg 106898943Sluigi case O_TEE: 1069159636Soleg PRINT_UINT_ARG("tee ", cmd->arg1); 1070159636Soleg break; 1071159636Soleg 1072141351Sglebius case O_NETGRAPH: 1073159636Soleg PRINT_UINT_ARG("netgraph ", cmd->arg1); 1074159636Soleg break; 1075159636Soleg 1076141351Sglebius case O_NGTEE: 1077159636Soleg PRINT_UINT_ARG("ngtee ", cmd->arg1); 1078159636Soleg break; 1079141351Sglebius 108098943Sluigi case O_FORWARD_IP: 108198943Sluigi { 108298943Sluigi ipfw_insn_sa *s = (ipfw_insn_sa *)cmd; 108398943Sluigi 1084161424Sjulian if (s->sa.sin_addr.s_addr == INADDR_ANY) { 1085161424Sjulian printf("fwd tablearg"); 1086161424Sjulian } else { 1087161424Sjulian printf("fwd %s", inet_ntoa(s->sa.sin_addr)); 1088161424Sjulian } 108998943Sluigi if (s->sa.sin_port) 1090103241Sluigi printf(",%d", s->sa.sin_port); 109198943Sluigi } 109298943Sluigi break; 109398943Sluigi 109498943Sluigi case O_LOG: /* O_LOG is printed last */ 109598943Sluigi logptr = (ipfw_insn_log *)cmd; 109698943Sluigi break; 109798943Sluigi 1098136071Sgreen case O_ALTQ: /* O_ALTQ is printed after O_LOG */ 1099136071Sgreen altqptr = (ipfw_insn_altq *)cmd; 1100136071Sgreen break; 1101136071Sgreen 1102158879Soleg case O_TAG: 1103158879Soleg tagptr = cmd; 1104158879Soleg break; 1105158879Soleg 1106165648Spiso case O_NAT: 1107176517Spiso PRINT_UINT_ARG("nat ", cmd->arg1); 1108165648Spiso break; 1109165648Spiso 1110178888Sjulian case O_SETFIB: 1111178888Sjulian PRINT_UINT_ARG("setfib ", cmd->arg1); 1112178888Sjulian break; 1113190633Spiso 1114190633Spiso case O_REASS: 1115190633Spiso printf("reass"); 1116190633Spiso break; 1117178888Sjulian 111898943Sluigi default: 1119136071Sgreen printf("** unrecognized action %d len %d ", 112098943Sluigi cmd->opcode, cmd->len); 112198943Sluigi } 112298943Sluigi } 112398943Sluigi if (logptr) { 112498943Sluigi if (logptr->max_log > 0) 112599909Sluigi printf(" log logamount %d", logptr->max_log); 112698943Sluigi else 112799909Sluigi printf(" log"); 112898943Sluigi } 1129136071Sgreen if (altqptr) { 1130187983Sluigi print_altq_cmd(altqptr); 1131136071Sgreen } 1132158879Soleg if (tagptr) { 1133158879Soleg if (tagptr->len & F_NOT) 1134159636Soleg PRINT_UINT_ARG(" untag ", tagptr->arg1); 1135158879Soleg else 1136159636Soleg PRINT_UINT_ARG(" tag ", tagptr->arg1); 1137158879Soleg } 1138136071Sgreen 113998943Sluigi /* 1140102087Sluigi * then print the body. 114198943Sluigi */ 1142146894Smlaier for (l = rule->act_ofs, cmd = rule->cmd ; 1143146894Smlaier l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 1144146894Smlaier if ((cmd->len & F_OR) || (cmd->len & F_NOT)) 1145146894Smlaier continue; 1146146894Smlaier if (cmd->opcode == O_IP4) { 1147146894Smlaier flags |= HAVE_PROTO4; 1148146894Smlaier break; 1149146894Smlaier } else if (cmd->opcode == O_IP6) { 1150146894Smlaier flags |= HAVE_PROTO6; 1151146894Smlaier break; 1152146894Smlaier } 1153146894Smlaier } 1154102087Sluigi if (rule->_pad & 1) { /* empty rules before options */ 1155187764Sluigi if (!co.do_compact) { 1156146894Smlaier show_prerequisites(&flags, HAVE_PROTO, 0); 1157146894Smlaier printf(" from any to any"); 1158146894Smlaier } 1159102087Sluigi flags |= HAVE_IP | HAVE_OPTIONS; 1160102087Sluigi } 1161102087Sluigi 1162187764Sluigi if (co.comment_only) 1163123495Sluigi comment = "..."; 1164123495Sluigi 116598943Sluigi for (l = rule->act_ofs, cmd = rule->cmd ; 116698943Sluigi l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 116799475Sluigi /* useful alias */ 116899475Sluigi ipfw_insn_u32 *cmd32 = (ipfw_insn_u32 *)cmd; 116998943Sluigi 1170187764Sluigi if (co.comment_only) { 1171123495Sluigi if (cmd->opcode != O_NOP) 1172123495Sluigi continue; 1173123495Sluigi printf(" // %s\n", (char *)(cmd + 1)); 1174123495Sluigi return; 1175123495Sluigi } 1176123495Sluigi 1177102087Sluigi show_prerequisites(&flags, 0, cmd->opcode); 1178102087Sluigi 117998943Sluigi switch(cmd->opcode) { 1180117577Sluigi case O_PROB: 1181107289Sluigi break; /* done already */ 1182107289Sluigi 118398943Sluigi case O_PROBE_STATE: 118498943Sluigi break; /* no need to print anything here */ 118598943Sluigi 118698943Sluigi case O_IP_SRC: 1187130281Sru case O_IP_SRC_LOOKUP: 118898943Sluigi case O_IP_SRC_MASK: 118998943Sluigi case O_IP_SRC_ME: 119098943Sluigi case O_IP_SRC_SET: 1191102087Sluigi show_prerequisites(&flags, HAVE_PROTO, 0); 119298943Sluigi if (!(flags & HAVE_SRCIP)) 119398943Sluigi printf(" from"); 119498943Sluigi if ((cmd->len & F_OR) && !or_block) 119598943Sluigi printf(" {"); 1196102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1197102087Sluigi (flags & HAVE_OPTIONS) ? " src-ip" : ""); 119898943Sluigi flags |= HAVE_SRCIP; 119998943Sluigi break; 120098943Sluigi 120198943Sluigi case O_IP_DST: 1202130281Sru case O_IP_DST_LOOKUP: 120398943Sluigi case O_IP_DST_MASK: 120498943Sluigi case O_IP_DST_ME: 120598943Sluigi case O_IP_DST_SET: 1206102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 120798943Sluigi if (!(flags & HAVE_DSTIP)) 120898943Sluigi printf(" to"); 120998943Sluigi if ((cmd->len & F_OR) && !or_block) 121098943Sluigi printf(" {"); 1211102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1212102087Sluigi (flags & HAVE_OPTIONS) ? " dst-ip" : ""); 121398943Sluigi flags |= HAVE_DSTIP; 121498943Sluigi break; 121598943Sluigi 1216145246Sbrooks case O_IP6_SRC: 1217145246Sbrooks case O_IP6_SRC_MASK: 1218145246Sbrooks case O_IP6_SRC_ME: 1219147105Smlaier show_prerequisites(&flags, HAVE_PROTO, 0); 1220145246Sbrooks if (!(flags & HAVE_SRCIP)) 1221145246Sbrooks printf(" from"); 1222145246Sbrooks if ((cmd->len & F_OR) && !or_block) 1223145246Sbrooks printf(" {"); 1224145246Sbrooks print_ip6((ipfw_insn_ip6 *)cmd, 1225145246Sbrooks (flags & HAVE_OPTIONS) ? " src-ip6" : ""); 1226145246Sbrooks flags |= HAVE_SRCIP | HAVE_PROTO; 1227145246Sbrooks break; 1228145246Sbrooks 1229145246Sbrooks case O_IP6_DST: 1230145246Sbrooks case O_IP6_DST_MASK: 1231145246Sbrooks case O_IP6_DST_ME: 1232145246Sbrooks show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 1233145246Sbrooks if (!(flags & HAVE_DSTIP)) 1234145246Sbrooks printf(" to"); 1235145246Sbrooks if ((cmd->len & F_OR) && !or_block) 1236145246Sbrooks printf(" {"); 1237145246Sbrooks print_ip6((ipfw_insn_ip6 *)cmd, 1238145246Sbrooks (flags & HAVE_OPTIONS) ? " dst-ip6" : ""); 1239145246Sbrooks flags |= HAVE_DSTIP; 1240145246Sbrooks break; 1241145246Sbrooks 1242145246Sbrooks case O_FLOW6ID: 1243145246Sbrooks print_flow6id( (ipfw_insn_u32 *) cmd ); 1244145246Sbrooks flags |= HAVE_OPTIONS; 1245145246Sbrooks break; 1246145246Sbrooks 124798943Sluigi case O_IP_DSTPORT: 1248102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 124998943Sluigi case O_IP_SRCPORT: 1250102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 1251101641Sluigi if ((cmd->len & F_OR) && !or_block) 1252101641Sluigi printf(" {"); 1253172306Smaxim if (cmd->len & F_NOT) 1254172306Smaxim printf(" not"); 1255102087Sluigi print_newports((ipfw_insn_u16 *)cmd, proto, 1256102087Sluigi (flags & HAVE_OPTIONS) ? cmd->opcode : 0); 125798943Sluigi break; 125898943Sluigi 125998943Sluigi case O_PROTO: { 1260145246Sbrooks struct protoent *pe = NULL; 126198943Sluigi 126298943Sluigi if ((cmd->len & F_OR) && !or_block) 126398943Sluigi printf(" {"); 126498943Sluigi if (cmd->len & F_NOT) 126598943Sluigi printf(" not"); 126698943Sluigi proto = cmd->arg1; 1267145567Sbrooks pe = getprotobynumber(cmd->arg1); 1268146894Smlaier if ((flags & (HAVE_PROTO4 | HAVE_PROTO6)) && 1269146894Smlaier !(flags & HAVE_PROTO)) 1270146894Smlaier show_prerequisites(&flags, 1271146894Smlaier HAVE_IP | HAVE_OPTIONS, 0); 1272102087Sluigi if (flags & HAVE_OPTIONS) 1273102087Sluigi printf(" proto"); 127498943Sluigi if (pe) 127598943Sluigi printf(" %s", pe->p_name); 127698943Sluigi else 127798943Sluigi printf(" %u", cmd->arg1); 127898943Sluigi } 127998943Sluigi flags |= HAVE_PROTO; 128098943Sluigi break; 1281106505Smaxim 128298943Sluigi default: /*options ... */ 1283146894Smlaier if (!(cmd->len & (F_OR|F_NOT))) 1284146894Smlaier if (((cmd->opcode == O_IP6) && 1285146894Smlaier (flags & HAVE_PROTO6)) || 1286146894Smlaier ((cmd->opcode == O_IP4) && 1287146894Smlaier (flags & HAVE_PROTO4))) 1288146894Smlaier break; 1289102087Sluigi show_prerequisites(&flags, HAVE_IP | HAVE_OPTIONS, 0); 129098943Sluigi if ((cmd->len & F_OR) && !or_block) 129198943Sluigi printf(" {"); 129298943Sluigi if (cmd->len & F_NOT && cmd->opcode != O_IN) 129398943Sluigi printf(" not"); 129498943Sluigi switch(cmd->opcode) { 1295169139Smaxim case O_MACADDR2: { 1296169139Smaxim ipfw_insn_mac *m = (ipfw_insn_mac *)cmd; 1297169139Smaxim 1298169139Smaxim printf(" MAC"); 1299169139Smaxim print_mac(m->addr, m->mask); 1300169139Smaxim print_mac(m->addr + 6, m->mask + 6); 1301169139Smaxim } 1302169139Smaxim break; 1303169139Smaxim 1304169139Smaxim case O_MAC_TYPE: 1305169139Smaxim print_newports((ipfw_insn_u16 *)cmd, 1306169139Smaxim IPPROTO_ETHERTYPE, cmd->opcode); 1307169139Smaxim break; 1308169139Smaxim 1309169139Smaxim 131098943Sluigi case O_FRAG: 131198943Sluigi printf(" frag"); 131298943Sluigi break; 131398943Sluigi 1314178888Sjulian case O_FIB: 1315178888Sjulian printf(" fib %u", cmd->arg1 ); 1316178888Sjulian break; 1317178888Sjulian 131898943Sluigi case O_IN: 131998943Sluigi printf(cmd->len & F_NOT ? " out" : " in"); 132098943Sluigi break; 132198943Sluigi 1322136073Sgreen case O_DIVERTED: 1323136073Sgreen switch (cmd->arg1) { 1324136073Sgreen case 3: 1325136073Sgreen printf(" diverted"); 1326136073Sgreen break; 1327136073Sgreen case 1: 1328136073Sgreen printf(" diverted-loopback"); 1329136073Sgreen break; 1330136073Sgreen case 2: 1331136073Sgreen printf(" diverted-output"); 1332136073Sgreen break; 1333136073Sgreen default: 1334136073Sgreen printf(" diverted-?<%u>", cmd->arg1); 1335136073Sgreen break; 1336136073Sgreen } 1337136073Sgreen break; 1338136073Sgreen 133998943Sluigi case O_LAYER2: 134098943Sluigi printf(" layer2"); 134198943Sluigi break; 134298943Sluigi case O_XMIT: 134398943Sluigi case O_RECV: 1344140423Sglebius case O_VIA: 1345140423Sglebius { 1346117469Sluigi char const *s; 134798943Sluigi ipfw_insn_if *cmdif = (ipfw_insn_if *)cmd; 134898943Sluigi 134998943Sluigi if (cmd->opcode == O_XMIT) 135098943Sluigi s = "xmit"; 135198943Sluigi else if (cmd->opcode == O_RECV) 135298943Sluigi s = "recv"; 1353117469Sluigi else /* if (cmd->opcode == O_VIA) */ 135498943Sluigi s = "via"; 135598943Sluigi if (cmdif->name[0] == '\0') 135699475Sluigi printf(" %s %s", s, 135799475Sluigi inet_ntoa(cmdif->p.ip)); 1358140423Sglebius else 1359140423Sglebius printf(" %s %s", s, cmdif->name); 1360140423Sglebius 136198943Sluigi break; 1362140423Sglebius } 136398943Sluigi case O_IPID: 1364116690Sluigi if (F_LEN(cmd) == 1) 1365116690Sluigi printf(" ipid %u", cmd->arg1 ); 1366116690Sluigi else 1367116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1368116690Sluigi O_IPID); 136998943Sluigi break; 137098943Sluigi 137198943Sluigi case O_IPTTL: 1372116690Sluigi if (F_LEN(cmd) == 1) 1373116690Sluigi printf(" ipttl %u", cmd->arg1 ); 1374116690Sluigi else 1375116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1376116690Sluigi O_IPTTL); 137798943Sluigi break; 137898943Sluigi 137998943Sluigi case O_IPVER: 138098943Sluigi printf(" ipver %u", cmd->arg1 ); 138198943Sluigi break; 138298943Sluigi 138399475Sluigi case O_IPPRECEDENCE: 138499475Sluigi printf(" ipprecedence %u", (cmd->arg1) >> 5 ); 138599475Sluigi break; 138699475Sluigi 138798943Sluigi case O_IPLEN: 1388116690Sluigi if (F_LEN(cmd) == 1) 1389116690Sluigi printf(" iplen %u", cmd->arg1 ); 1390116690Sluigi else 1391116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1392116690Sluigi O_IPLEN); 139398943Sluigi break; 139498943Sluigi 1395101116Sluigi case O_IPOPT: 139698943Sluigi print_flags("ipoptions", cmd, f_ipopts); 139798943Sluigi break; 139898943Sluigi 139999475Sluigi case O_IPTOS: 140099475Sluigi print_flags("iptos", cmd, f_iptos); 140199475Sluigi break; 140299475Sluigi 140399475Sluigi case O_ICMPTYPE: 140499475Sluigi print_icmptypes((ipfw_insn_u32 *)cmd); 140599475Sluigi break; 140699475Sluigi 140798943Sluigi case O_ESTAB: 140898943Sluigi printf(" established"); 140998943Sluigi break; 141098943Sluigi 1411136075Sgreen case O_TCPDATALEN: 1412136075Sgreen if (F_LEN(cmd) == 1) 1413136075Sgreen printf(" tcpdatalen %u", cmd->arg1 ); 1414136075Sgreen else 1415136075Sgreen print_newports((ipfw_insn_u16 *)cmd, 0, 1416136075Sgreen O_TCPDATALEN); 1417136075Sgreen break; 1418136075Sgreen 141998943Sluigi case O_TCPFLAGS: 142098943Sluigi print_flags("tcpflags", cmd, f_tcpflags); 142198943Sluigi break; 142298943Sluigi 142398943Sluigi case O_TCPOPTS: 142498943Sluigi print_flags("tcpoptions", cmd, f_tcpopts); 142598943Sluigi break; 142698943Sluigi 142798943Sluigi case O_TCPWIN: 142898943Sluigi printf(" tcpwin %d", ntohs(cmd->arg1)); 142998943Sluigi break; 143098943Sluigi 143198943Sluigi case O_TCPACK: 143298943Sluigi printf(" tcpack %d", ntohl(cmd32->d[0])); 143398943Sluigi break; 143498943Sluigi 143598943Sluigi case O_TCPSEQ: 143698943Sluigi printf(" tcpseq %d", ntohl(cmd32->d[0])); 143798943Sluigi break; 143898943Sluigi 143998943Sluigi case O_UID: 144098943Sluigi { 144198943Sluigi struct passwd *pwd = getpwuid(cmd32->d[0]); 144298943Sluigi 144398943Sluigi if (pwd) 144498943Sluigi printf(" uid %s", pwd->pw_name); 144598943Sluigi else 144698943Sluigi printf(" uid %u", cmd32->d[0]); 144798943Sluigi } 144898943Sluigi break; 144998943Sluigi 145098943Sluigi case O_GID: 145198943Sluigi { 145298943Sluigi struct group *grp = getgrgid(cmd32->d[0]); 145398943Sluigi 145498943Sluigi if (grp) 145598943Sluigi printf(" gid %s", grp->gr_name); 145698943Sluigi else 145798943Sluigi printf(" gid %u", cmd32->d[0]); 145898943Sluigi } 145998943Sluigi break; 146098943Sluigi 1461133600Scsjp case O_JAIL: 1462133600Scsjp printf(" jail %d", cmd32->d[0]); 1463133600Scsjp break; 1464133600Scsjp 1465112250Scjc case O_VERREVPATH: 1466112250Scjc printf(" verrevpath"); 1467112250Scjc break; 1468116919Sluigi 1469128575Sandre case O_VERSRCREACH: 1470128575Sandre printf(" versrcreach"); 1471128575Sandre break; 1472128575Sandre 1473133387Sandre case O_ANTISPOOF: 1474133387Sandre printf(" antispoof"); 1475133387Sandre break; 1476133387Sandre 1477117241Sluigi case O_IPSEC: 1478117241Sluigi printf(" ipsec"); 1479117241Sluigi break; 1480117241Sluigi 1481117469Sluigi case O_NOP: 1482117626Sluigi comment = (char *)(cmd + 1); 1483117469Sluigi break; 1484117469Sluigi 148598943Sluigi case O_KEEP_STATE: 148698943Sluigi printf(" keep-state"); 148798943Sluigi break; 148898943Sluigi 1489159636Soleg case O_LIMIT: { 149098943Sluigi struct _s_x *p = limit_masks; 149198943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 1492117328Sluigi uint8_t x = c->limit_mask; 1493117469Sluigi char const *comma = " "; 149498943Sluigi 149598943Sluigi printf(" limit"); 1496117577Sluigi for (; p->x != 0 ; p++) 149799909Sluigi if ((x & p->x) == p->x) { 149898943Sluigi x &= ~p->x; 149998943Sluigi printf("%s%s", comma, p->s); 150098943Sluigi comma = ","; 150198943Sluigi } 1502159636Soleg PRINT_UINT_ARG(" ", c->conn_limit); 150398943Sluigi break; 1504159636Soleg } 150598943Sluigi 1506146894Smlaier case O_IP6: 1507152923Sume printf(" ip6"); 1508145246Sbrooks break; 1509145246Sbrooks 1510146894Smlaier case O_IP4: 1511152923Sume printf(" ip4"); 1512146894Smlaier break; 1513146894Smlaier 1514145246Sbrooks case O_ICMP6TYPE: 1515145246Sbrooks print_icmp6types((ipfw_insn_u32 *)cmd); 1516145246Sbrooks break; 1517145246Sbrooks 1518145246Sbrooks case O_EXT_HDR: 1519145246Sbrooks print_ext6hdr( (ipfw_insn *) cmd ); 1520145246Sbrooks break; 1521145246Sbrooks 1522158879Soleg case O_TAGGED: 1523158879Soleg if (F_LEN(cmd) == 1) 1524159636Soleg PRINT_UINT_ARG(" tagged ", cmd->arg1); 1525158879Soleg else 1526159636Soleg print_newports((ipfw_insn_u16 *)cmd, 0, 1527159636Soleg O_TAGGED); 1528158879Soleg break; 1529158879Soleg 153098943Sluigi default: 153198943Sluigi printf(" [opcode %d len %d]", 153298943Sluigi cmd->opcode, cmd->len); 153398943Sluigi } 153498943Sluigi } 153598943Sluigi if (cmd->len & F_OR) { 153698943Sluigi printf(" or"); 153798943Sluigi or_block = 1; 153898943Sluigi } else if (or_block) { 153998943Sluigi printf(" }"); 154098943Sluigi or_block = 0; 154198943Sluigi } 154298943Sluigi } 1543102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 1544117626Sluigi if (comment) 1545117626Sluigi printf(" // %s", comment); 154698943Sluigi printf("\n"); 154798943Sluigi} 154898943Sluigi 154998943Sluigistatic void 1550112189Smaximshow_dyn_ipfw(ipfw_dyn_rule *d, int pcwidth, int bcwidth) 155198943Sluigi{ 155298943Sluigi struct protoent *pe; 155398943Sluigi struct in_addr a; 1554115793Sticso uint16_t rulenum; 1555159160Smlaier char buf[INET6_ADDRSTRLEN]; 155698943Sluigi 1557187764Sluigi if (!co.do_expired) { 155898943Sluigi if (!d->expire && !(d->dyn_type == O_LIMIT_PARENT)) 155998943Sluigi return; 156098943Sluigi } 1561115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 1562117328Sluigi printf("%05d", rulenum); 1563117469Sluigi if (pcwidth>0 || bcwidth>0) 1564117328Sluigi printf(" %*llu %*llu (%ds)", pcwidth, 1565117328Sluigi align_uint64(&d->pcnt), bcwidth, 1566117328Sluigi align_uint64(&d->bcnt), d->expire); 156798943Sluigi switch (d->dyn_type) { 156898943Sluigi case O_LIMIT_PARENT: 156998943Sluigi printf(" PARENT %d", d->count); 157098943Sluigi break; 157198943Sluigi case O_LIMIT: 157298943Sluigi printf(" LIMIT"); 157398943Sluigi break; 157498943Sluigi case O_KEEP_STATE: /* bidir, no mask */ 1575106505Smaxim printf(" STATE"); 157698943Sluigi break; 157798943Sluigi } 157898943Sluigi 157998943Sluigi if ((pe = getprotobynumber(d->id.proto)) != NULL) 158098943Sluigi printf(" %s", pe->p_name); 158198943Sluigi else 158298943Sluigi printf(" proto %u", d->id.proto); 158398943Sluigi 1584159160Smlaier if (d->id.addr_type == 4) { 1585159160Smlaier a.s_addr = htonl(d->id.src_ip); 1586159160Smlaier printf(" %s %d", inet_ntoa(a), d->id.src_port); 158798943Sluigi 1588159160Smlaier a.s_addr = htonl(d->id.dst_ip); 1589159160Smlaier printf(" <-> %s %d", inet_ntoa(a), d->id.dst_port); 1590159160Smlaier } else if (d->id.addr_type == 6) { 1591159160Smlaier printf(" %s %d", inet_ntop(AF_INET6, &d->id.src_ip6, buf, 1592159160Smlaier sizeof(buf)), d->id.src_port); 1593159160Smlaier printf(" <-> %s %d", inet_ntop(AF_INET6, &d->id.dst_ip6, buf, 1594159160Smlaier sizeof(buf)), d->id.dst_port); 1595159160Smlaier } else 1596159160Smlaier printf(" UNKNOWN <-> UNKNOWN\n"); 1597159160Smlaier 159898943Sluigi printf("\n"); 159998943Sluigi} 160098943Sluigi 1601101978Sluigi/* 1602101978Sluigi * This one handles all set-related commands 1603101978Sluigi * ipfw set { show | enable | disable } 1604101978Sluigi * ipfw set swap X Y 1605101978Sluigi * ipfw set move X to Y 1606101978Sluigi * ipfw set move rule X to Y 1607101978Sluigi */ 1608187767Sluigivoid 1609187767Sluigiipfw_sets_handler(int ac, char *av[]) 1610101978Sluigi{ 1611117328Sluigi uint32_t set_disable, masks[2]; 1612101978Sluigi int i, nbytes; 1613117328Sluigi uint16_t rulenum; 1614117328Sluigi uint8_t cmd, new_set; 1615101978Sluigi 1616101978Sluigi ac--; 1617101978Sluigi av++; 1618101978Sluigi 1619101978Sluigi if (!ac) 1620101978Sluigi errx(EX_USAGE, "set needs command"); 1621140271Sbrooks if (_substrcmp(*av, "show") == 0) { 1622101978Sluigi void *data; 1623117469Sluigi char const *msg; 1624101978Sluigi 1625101978Sluigi nbytes = sizeof(struct ip_fw); 1626187716Sluigi data = safe_calloc(1, nbytes); 1627119740Stmm if (do_cmd(IP_FW_GET, data, (uintptr_t)&nbytes) < 0) 1628101978Sluigi err(EX_OSERR, "getsockopt(IP_FW_GET)"); 1629115793Sticso bcopy(&((struct ip_fw *)data)->next_rule, 1630115793Sticso &set_disable, sizeof(set_disable)); 1631101978Sluigi 1632117655Sluigi for (i = 0, msg = "disable" ; i < RESVD_SET; i++) 1633117577Sluigi if ((set_disable & (1<<i))) { 1634101978Sluigi printf("%s %d", msg, i); 1635101978Sluigi msg = ""; 1636101978Sluigi } 1637101978Sluigi msg = (set_disable) ? " enable" : "enable"; 1638117655Sluigi for (i = 0; i < RESVD_SET; i++) 1639117577Sluigi if (!(set_disable & (1<<i))) { 1640101978Sluigi printf("%s %d", msg, i); 1641101978Sluigi msg = ""; 1642101978Sluigi } 1643101978Sluigi printf("\n"); 1644140271Sbrooks } else if (_substrcmp(*av, "swap") == 0) { 1645101978Sluigi ac--; av++; 1646101978Sluigi if (ac != 2) 1647101978Sluigi errx(EX_USAGE, "set swap needs 2 set numbers\n"); 1648101978Sluigi rulenum = atoi(av[0]); 1649101978Sluigi new_set = atoi(av[1]); 1650117655Sluigi if (!isdigit(*(av[0])) || rulenum > RESVD_SET) 1651101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[0]); 1652117655Sluigi if (!isdigit(*(av[1])) || new_set > RESVD_SET) 1653101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[1]); 1654101978Sluigi masks[0] = (4 << 24) | (new_set << 16) | (rulenum); 1655117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(uint32_t)); 1656140271Sbrooks } else if (_substrcmp(*av, "move") == 0) { 1657101978Sluigi ac--; av++; 1658140271Sbrooks if (ac && _substrcmp(*av, "rule") == 0) { 1659101978Sluigi cmd = 2; 1660101978Sluigi ac--; av++; 1661101978Sluigi } else 1662101978Sluigi cmd = 3; 1663140271Sbrooks if (ac != 3 || _substrcmp(av[1], "to") != 0) 1664101978Sluigi errx(EX_USAGE, "syntax: set move [rule] X to Y\n"); 1665101978Sluigi rulenum = atoi(av[0]); 1666101978Sluigi new_set = atoi(av[2]); 1667117655Sluigi if (!isdigit(*(av[0])) || (cmd == 3 && rulenum > RESVD_SET) || 1668182823Srik (cmd == 2 && rulenum == IPFW_DEFAULT_RULE) ) 1669101978Sluigi errx(EX_DATAERR, "invalid source number %s\n", av[0]); 1670117655Sluigi if (!isdigit(*(av[2])) || new_set > RESVD_SET) 1671101978Sluigi errx(EX_DATAERR, "invalid dest. set %s\n", av[1]); 1672101978Sluigi masks[0] = (cmd << 24) | (new_set << 16) | (rulenum); 1673117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(uint32_t)); 1674140271Sbrooks } else if (_substrcmp(*av, "disable") == 0 || 1675140271Sbrooks _substrcmp(*av, "enable") == 0 ) { 1676140271Sbrooks int which = _substrcmp(*av, "enable") == 0 ? 1 : 0; 1677101978Sluigi 1678101978Sluigi ac--; av++; 1679101978Sluigi masks[0] = masks[1] = 0; 1680101978Sluigi 1681101978Sluigi while (ac) { 1682101978Sluigi if (isdigit(**av)) { 1683101978Sluigi i = atoi(*av); 1684117655Sluigi if (i < 0 || i > RESVD_SET) 1685101978Sluigi errx(EX_DATAERR, 1686101978Sluigi "invalid set number %d\n", i); 1687101978Sluigi masks[which] |= (1<<i); 1688140271Sbrooks } else if (_substrcmp(*av, "disable") == 0) 1689101978Sluigi which = 0; 1690140271Sbrooks else if (_substrcmp(*av, "enable") == 0) 1691101978Sluigi which = 1; 1692101978Sluigi else 1693101978Sluigi errx(EX_DATAERR, 1694101978Sluigi "invalid set command %s\n", *av); 1695101978Sluigi av++; ac--; 1696101978Sluigi } 1697101978Sluigi if ( (masks[0] & masks[1]) != 0 ) 1698101978Sluigi errx(EX_DATAERR, 1699101978Sluigi "cannot enable and disable the same set\n"); 1700101978Sluigi 1701117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(masks)); 1702101978Sluigi if (i) 1703101978Sluigi warn("set enable/disable: setsockopt(IP_FW_DEL)"); 1704101978Sluigi } else 1705101978Sluigi errx(EX_USAGE, "invalid set command %s\n", *av); 1706101978Sluigi} 1707101978Sluigi 1708187767Sluigivoid 1709187767Sluigiipfw_sysctl_handler(int ac, char *av[], int which) 1710109126Sdillon{ 1711109126Sdillon ac--; 1712109126Sdillon av++; 1713109126Sdillon 1714119668Smaxim if (ac == 0) { 1715109126Sdillon warnx("missing keyword to enable/disable\n"); 1716140271Sbrooks } else if (_substrcmp(*av, "firewall") == 0) { 1717116770Sluigi sysctlbyname("net.inet.ip.fw.enable", NULL, 0, 1718116770Sluigi &which, sizeof(which)); 1719140271Sbrooks } else if (_substrcmp(*av, "one_pass") == 0) { 1720116770Sluigi sysctlbyname("net.inet.ip.fw.one_pass", NULL, 0, 1721116770Sluigi &which, sizeof(which)); 1722140271Sbrooks } else if (_substrcmp(*av, "debug") == 0) { 1723116770Sluigi sysctlbyname("net.inet.ip.fw.debug", NULL, 0, 1724116770Sluigi &which, sizeof(which)); 1725140271Sbrooks } else if (_substrcmp(*av, "verbose") == 0) { 1726116770Sluigi sysctlbyname("net.inet.ip.fw.verbose", NULL, 0, 1727116770Sluigi &which, sizeof(which)); 1728140271Sbrooks } else if (_substrcmp(*av, "dyn_keepalive") == 0) { 1729116770Sluigi sysctlbyname("net.inet.ip.fw.dyn_keepalive", NULL, 0, 1730116770Sluigi &which, sizeof(which)); 1731140271Sbrooks } else if (_substrcmp(*av, "altq") == 0) { 1732136071Sgreen altq_set_enabled(which); 1733109126Sdillon } else { 1734109126Sdillon warnx("unrecognize enable/disable keyword: %s\n", *av); 1735109126Sdillon } 1736109126Sdillon} 1737109126Sdillon 1738187767Sluigivoid 1739187767Sluigiipfw_list(int ac, char *av[], int show_counters) 174098943Sluigi{ 174198943Sluigi struct ip_fw *r; 174298943Sluigi ipfw_dyn_rule *dynrules, *d; 174398943Sluigi 1744117469Sluigi#define NEXT(r) ((struct ip_fw *)((char *)r + RULESIZE(r))) 1745117469Sluigi char *lim; 1746117469Sluigi void *data = NULL; 1747112189Smaxim int bcwidth, n, nbytes, nstat, ndyn, pcwidth, width; 174898943Sluigi int exitval = EX_OK; 174998943Sluigi int lac; 175098943Sluigi char **lav; 1751117469Sluigi u_long rnum, last; 175298943Sluigi char *endptr; 175398943Sluigi int seen = 0; 1754170923Smaxim uint8_t set; 175598943Sluigi 1756187764Sluigi const int ocmd = co.do_pipe ? IP_DUMMYNET_GET : IP_FW_GET; 175798943Sluigi int nalloc = 1024; /* start somewhere... */ 175898943Sluigi 1759135036Smaxim last = 0; 1760135036Smaxim 1761187764Sluigi if (co.test_only) { 1762117328Sluigi fprintf(stderr, "Testing only, list disabled\n"); 1763117328Sluigi return; 1764117328Sluigi } 1765117328Sluigi 176698943Sluigi ac--; 176798943Sluigi av++; 176898943Sluigi 176998943Sluigi /* get rules or pipes from kernel, resizing array as necessary */ 177098943Sluigi nbytes = nalloc; 177198943Sluigi 177298943Sluigi while (nbytes >= nalloc) { 177398943Sluigi nalloc = nalloc * 2 + 200; 177498943Sluigi nbytes = nalloc; 1775187716Sluigi data = safe_realloc(data, nbytes); 1776119740Stmm if (do_cmd(ocmd, data, (uintptr_t)&nbytes) < 0) 177798943Sluigi err(EX_OSERR, "getsockopt(IP_%s_GET)", 1778187764Sluigi co.do_pipe ? "DUMMYNET" : "FW"); 177998943Sluigi } 178098943Sluigi 1781187764Sluigi if (co.do_pipe) { 1782187769Sluigi ipfw_list_pipes(data, nbytes, ac, av); 178398943Sluigi goto done; 178498943Sluigi } 178598943Sluigi 178698943Sluigi /* 178798943Sluigi * Count static rules. They have variable size so we 178898943Sluigi * need to scan the list to count them. 178998943Sluigi */ 1790117469Sluigi for (nstat = 1, r = data, lim = (char *)data + nbytes; 1791182823Srik r->rulenum < IPFW_DEFAULT_RULE && (char *)r < lim; 1792117469Sluigi ++nstat, r = NEXT(r) ) 179398943Sluigi ; /* nothing */ 179498943Sluigi 179598943Sluigi /* 179698943Sluigi * Count dynamic rules. This is easier as they have 179798943Sluigi * fixed size. 179898943Sluigi */ 1799117469Sluigi r = NEXT(r); 180098943Sluigi dynrules = (ipfw_dyn_rule *)r ; 1801117469Sluigi n = (char *)r - (char *)data; 180298943Sluigi ndyn = (nbytes - n) / sizeof *dynrules; 180398943Sluigi 1804112189Smaxim /* if showing stats, figure out column widths ahead of time */ 1805112189Smaxim bcwidth = pcwidth = 0; 1806117469Sluigi if (show_counters) { 1807117469Sluigi for (n = 0, r = data; n < nstat; n++, r = NEXT(r)) { 1808170923Smaxim /* skip rules from another set */ 1809187764Sluigi if (co.use_set && r->set != co.use_set - 1) 1810170923Smaxim continue; 1811170923Smaxim 1812112189Smaxim /* packet counter */ 1813115793Sticso width = snprintf(NULL, 0, "%llu", 1814115793Sticso align_uint64(&r->pcnt)); 1815112189Smaxim if (width > pcwidth) 1816112189Smaxim pcwidth = width; 1817112189Smaxim 1818112189Smaxim /* byte counter */ 1819115793Sticso width = snprintf(NULL, 0, "%llu", 1820115793Sticso align_uint64(&r->bcnt)); 1821112189Smaxim if (width > bcwidth) 1822112189Smaxim bcwidth = width; 1823112189Smaxim } 1824112189Smaxim } 1825187764Sluigi if (co.do_dynamic && ndyn) { 1826112189Smaxim for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1827187764Sluigi if (co.use_set) { 1828170923Smaxim /* skip rules from another set */ 1829171989Smaxim bcopy((char *)&d->rule + sizeof(uint16_t), 1830170923Smaxim &set, sizeof(uint8_t)); 1831187764Sluigi if (set != co.use_set - 1) 1832170923Smaxim continue; 1833170923Smaxim } 1834115793Sticso width = snprintf(NULL, 0, "%llu", 1835115793Sticso align_uint64(&d->pcnt)); 1836112189Smaxim if (width > pcwidth) 1837112189Smaxim pcwidth = width; 1838112189Smaxim 1839115793Sticso width = snprintf(NULL, 0, "%llu", 1840115793Sticso align_uint64(&d->bcnt)); 1841112189Smaxim if (width > bcwidth) 1842112189Smaxim bcwidth = width; 1843112189Smaxim } 1844112189Smaxim } 184598943Sluigi /* if no rule numbers were specified, list all rules */ 184698943Sluigi if (ac == 0) { 1847170923Smaxim for (n = 0, r = data; n < nstat; n++, r = NEXT(r)) { 1848187764Sluigi if (co.use_set && r->set != co.use_set - 1) 1849170923Smaxim continue; 1850112189Smaxim show_ipfw(r, pcwidth, bcwidth); 1851170923Smaxim } 185298943Sluigi 1853187764Sluigi if (co.do_dynamic && ndyn) { 185498943Sluigi printf("## Dynamic rules (%d):\n", ndyn); 1855170923Smaxim for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1856187764Sluigi if (co.use_set) { 1857171989Smaxim bcopy((char *)&d->rule + sizeof(uint16_t), 1858170923Smaxim &set, sizeof(uint8_t)); 1859187764Sluigi if (set != co.use_set - 1) 1860170923Smaxim continue; 1861170923Smaxim } 1862112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 186398943Sluigi } 1864170923Smaxim } 186598943Sluigi goto done; 186698943Sluigi } 186798943Sluigi 186898943Sluigi /* display specific rules requested on command line */ 186998943Sluigi 187098943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 187198943Sluigi /* convert command line rule # */ 1872117469Sluigi last = rnum = strtoul(*lav++, &endptr, 10); 1873117469Sluigi if (*endptr == '-') 1874117469Sluigi last = strtoul(endptr+1, &endptr, 10); 187598943Sluigi if (*endptr) { 187698943Sluigi exitval = EX_USAGE; 187798943Sluigi warnx("invalid rule number: %s", *(lav - 1)); 187898943Sluigi continue; 187998943Sluigi } 1880117469Sluigi for (n = seen = 0, r = data; n < nstat; n++, r = NEXT(r) ) { 1881117469Sluigi if (r->rulenum > last) 188298943Sluigi break; 1883187764Sluigi if (co.use_set && r->set != co.use_set - 1) 1884170923Smaxim continue; 1885117469Sluigi if (r->rulenum >= rnum && r->rulenum <= last) { 1886112189Smaxim show_ipfw(r, pcwidth, bcwidth); 188798943Sluigi seen = 1; 188898943Sluigi } 188998943Sluigi } 189098943Sluigi if (!seen) { 189198943Sluigi /* give precedence to other error(s) */ 189298943Sluigi if (exitval == EX_OK) 189398943Sluigi exitval = EX_UNAVAILABLE; 189498943Sluigi warnx("rule %lu does not exist", rnum); 189598943Sluigi } 189698943Sluigi } 189798943Sluigi 1898187764Sluigi if (co.do_dynamic && ndyn) { 189998943Sluigi printf("## Dynamic rules:\n"); 190098943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 1901145246Sbrooks last = rnum = strtoul(*lav++, &endptr, 10); 1902117469Sluigi if (*endptr == '-') 1903117469Sluigi last = strtoul(endptr+1, &endptr, 10); 190498943Sluigi if (*endptr) 190598943Sluigi /* already warned */ 190698943Sluigi continue; 190798943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1908115793Sticso uint16_t rulenum; 1909115793Sticso 1910115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 1911115793Sticso if (rulenum > rnum) 191298943Sluigi break; 1913187764Sluigi if (co.use_set) { 1914171989Smaxim bcopy((char *)&d->rule + sizeof(uint16_t), 1915170923Smaxim &set, sizeof(uint8_t)); 1916187764Sluigi if (set != co.use_set - 1) 1917170923Smaxim continue; 1918170923Smaxim } 1919117469Sluigi if (r->rulenum >= rnum && r->rulenum <= last) 1920112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 192198943Sluigi } 192298943Sluigi } 192398943Sluigi } 192498943Sluigi 192598943Sluigi ac = 0; 192698943Sluigi 192798943Sluigidone: 192898943Sluigi free(data); 192998943Sluigi 193098943Sluigi if (exitval != EX_OK) 193198943Sluigi exit(exitval); 1932117469Sluigi#undef NEXT 193398943Sluigi} 193498943Sluigi 193598943Sluigistatic int 193698943Sluigilookup_host (char *host, struct in_addr *ipaddr) 193798943Sluigi{ 193898943Sluigi struct hostent *he; 193998943Sluigi 194098943Sluigi if (!inet_aton(host, ipaddr)) { 194198943Sluigi if ((he = gethostbyname(host)) == NULL) 194298943Sluigi return(-1); 194398943Sluigi *ipaddr = *(struct in_addr *)he->h_addr_list[0]; 194498943Sluigi } 194598943Sluigi return(0); 194698943Sluigi} 194798943Sluigi 194898943Sluigi/* 194998943Sluigi * fills the addr and mask fields in the instruction as appropriate from av. 195098943Sluigi * Update length as appropriate. 195198943Sluigi * The following formats are allowed: 195298943Sluigi * me returns O_IP_*_ME 195398943Sluigi * 1.2.3.4 single IP address 195498943Sluigi * 1.2.3.4:5.6.7.8 address:mask 195598943Sluigi * 1.2.3.4/24 address/mask 195698943Sluigi * 1.2.3.4/26{1,6,5,4,23} set of addresses in a subnet 1957117328Sluigi * We can have multiple comma-separated address/mask entries. 195898943Sluigi */ 195998943Sluigistatic void 196098943Sluigifill_ip(ipfw_insn_ip *cmd, char *av) 196198943Sluigi{ 1962117328Sluigi int len = 0; 1963117328Sluigi uint32_t *d = ((ipfw_insn_u32 *)cmd)->d; 196498943Sluigi 196598943Sluigi cmd->o.len &= ~F_LEN_MASK; /* zero len */ 196698943Sluigi 1967140271Sbrooks if (_substrcmp(av, "any") == 0) 196898943Sluigi return; 196998943Sluigi 1970140271Sbrooks if (_substrcmp(av, "me") == 0) { 197198943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn); 197298943Sluigi return; 197398943Sluigi } 197498943Sluigi 1975140271Sbrooks if (strncmp(av, "table(", 6) == 0) { 1976130281Sru char *p = strchr(av + 6, ','); 1977130281Sru 1978130281Sru if (p) 1979130281Sru *p++ = '\0'; 1980130281Sru cmd->o.opcode = O_IP_DST_LOOKUP; 1981130281Sru cmd->o.arg1 = strtoul(av + 6, NULL, 0); 1982130281Sru if (p) { 1983130281Sru cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 1984130281Sru d[0] = strtoul(p, NULL, 0); 1985130281Sru } else 1986130281Sru cmd->o.len |= F_INSN_SIZE(ipfw_insn); 1987130281Sru return; 1988130281Sru } 1989130281Sru 1990117328Sluigi while (av) { 1991117328Sluigi /* 1992117328Sluigi * After the address we can have '/' or ':' indicating a mask, 1993117328Sluigi * ',' indicating another address follows, '{' indicating a 1994117328Sluigi * set of addresses of unspecified size. 1995117328Sluigi */ 1996165851Smlaier char *t = NULL, *p = strpbrk(av, "/:,{"); 1997117328Sluigi int masklen; 1998187477Sluigi char md, nd = '\0'; 1999117328Sluigi 200098943Sluigi if (p) { 200198943Sluigi md = *p; 200298943Sluigi *p++ = '\0'; 2003165851Smlaier if ((t = strpbrk(p, ",{")) != NULL) { 2004165851Smlaier nd = *t; 2005165851Smlaier *t = '\0'; 2006165851Smlaier } 2007117328Sluigi } else 2008117328Sluigi md = '\0'; 200998943Sluigi 2010117328Sluigi if (lookup_host(av, (struct in_addr *)&d[0]) != 0) 201198943Sluigi errx(EX_NOHOST, "hostname ``%s'' unknown", av); 201298943Sluigi switch (md) { 201398943Sluigi case ':': 2014117328Sluigi if (!inet_aton(p, (struct in_addr *)&d[1])) 201598943Sluigi errx(EX_DATAERR, "bad netmask ``%s''", p); 201698943Sluigi break; 201798943Sluigi case '/': 2018117328Sluigi masklen = atoi(p); 2019117328Sluigi if (masklen == 0) 2020117328Sluigi d[1] = htonl(0); /* mask */ 2021117328Sluigi else if (masklen > 32) 202298943Sluigi errx(EX_DATAERR, "bad width ``%s''", p); 202398943Sluigi else 2024117328Sluigi d[1] = htonl(~0 << (32 - masklen)); 202598943Sluigi break; 2026117328Sluigi case '{': /* no mask, assume /24 and put back the '{' */ 2027117328Sluigi d[1] = htonl(~0 << (32 - 24)); 2028117328Sluigi *(--p) = md; 2029117328Sluigi break; 2030117328Sluigi 2031117328Sluigi case ',': /* single address plus continuation */ 2032117328Sluigi *(--p) = md; 2033117328Sluigi /* FALLTHROUGH */ 2034117328Sluigi case 0: /* initialization value */ 203598943Sluigi default: 2036117328Sluigi d[1] = htonl(~0); /* force /32 */ 203798943Sluigi break; 203898943Sluigi } 2039117328Sluigi d[0] &= d[1]; /* mask base address with mask */ 2040165851Smlaier if (t) 2041165851Smlaier *t = nd; 2042117328Sluigi /* find next separator */ 204398943Sluigi if (p) 2044117328Sluigi p = strpbrk(p, ",{"); 2045117328Sluigi if (p && *p == '{') { 2046117328Sluigi /* 2047117328Sluigi * We have a set of addresses. They are stored as follows: 2048117328Sluigi * arg1 is the set size (powers of 2, 2..256) 2049117328Sluigi * addr is the base address IN HOST FORMAT 2050117328Sluigi * mask.. is an array of arg1 bits (rounded up to 2051117328Sluigi * the next multiple of 32) with bits set 2052117328Sluigi * for each host in the map. 2053117328Sluigi */ 2054117328Sluigi uint32_t *map = (uint32_t *)&cmd->mask; 205598943Sluigi int low, high; 2056117577Sluigi int i = contigmask((uint8_t *)&(d[1]), 32); 205798943Sluigi 2058117328Sluigi if (len > 0) 2059117328Sluigi errx(EX_DATAERR, "address set cannot be in a list"); 2060117328Sluigi if (i < 24 || i > 31) 2061117328Sluigi errx(EX_DATAERR, "invalid set with mask %d\n", i); 2062117328Sluigi cmd->o.arg1 = 1<<(32-i); /* map length */ 2063117328Sluigi d[0] = ntohl(d[0]); /* base addr in host format */ 206498943Sluigi cmd->o.opcode = O_IP_DST_SET; /* default */ 206598943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32) + (cmd->o.arg1+31)/32; 2066101117Sluigi for (i = 0; i < (cmd->o.arg1+31)/32 ; i++) 2067117328Sluigi map[i] = 0; /* clear map */ 206898943Sluigi 2069117328Sluigi av = p + 1; 2070117328Sluigi low = d[0] & 0xff; 207198943Sluigi high = low + cmd->o.arg1 - 1; 2072117328Sluigi /* 2073117328Sluigi * Here, i stores the previous value when we specify a range 2074117328Sluigi * of addresses within a mask, e.g. 45-63. i = -1 means we 2075117328Sluigi * have no previous value. 2076117328Sluigi */ 2077116716Sluigi i = -1; /* previous value in a range */ 207898943Sluigi while (isdigit(*av)) { 207998943Sluigi char *s; 2080117328Sluigi int a = strtol(av, &s, 0); 208198943Sluigi 2082117328Sluigi if (s == av) { /* no parameter */ 2083117328Sluigi if (*av != '}') 2084117328Sluigi errx(EX_DATAERR, "set not closed\n"); 2085117328Sluigi if (i != -1) 2086117328Sluigi errx(EX_DATAERR, "incomplete range %d-", i); 2087117328Sluigi break; 2088117328Sluigi } 2089117328Sluigi if (a < low || a > high) 2090117328Sluigi errx(EX_DATAERR, "addr %d out of range [%d-%d]\n", 209198943Sluigi a, low, high); 209298943Sluigi a -= low; 2093116716Sluigi if (i == -1) /* no previous in range */ 2094116716Sluigi i = a; 2095116716Sluigi else { /* check that range is valid */ 2096116716Sluigi if (i > a) 2097116716Sluigi errx(EX_DATAERR, "invalid range %d-%d", 2098116716Sluigi i+low, a+low); 2099116716Sluigi if (*s == '-') 2100116716Sluigi errx(EX_DATAERR, "double '-' in range"); 2101116716Sluigi } 2102116716Sluigi for (; i <= a; i++) 2103117328Sluigi map[i/32] |= 1<<(i & 31); 2104116716Sluigi i = -1; 2105116716Sluigi if (*s == '-') 2106116716Sluigi i = a; 2107117328Sluigi else if (*s == '}') 2108116716Sluigi break; 210998943Sluigi av = s+1; 211098943Sluigi } 211198943Sluigi return; 211298943Sluigi } 2113117328Sluigi av = p; 2114117328Sluigi if (av) /* then *av must be a ',' */ 2115117328Sluigi av++; 211698943Sluigi 2117117328Sluigi /* Check this entry */ 2118117328Sluigi if (d[1] == 0) { /* "any", specified as x.x.x.x/0 */ 2119117328Sluigi /* 2120117328Sluigi * 'any' turns the entire list into a NOP. 2121117328Sluigi * 'not any' never matches, so it is removed from the 2122117328Sluigi * list unless it is the only item, in which case we 2123117328Sluigi * report an error. 2124117328Sluigi */ 2125117328Sluigi if (cmd->o.len & F_NOT) { /* "not any" never matches */ 2126117328Sluigi if (av == NULL && len == 0) /* only this entry */ 2127117328Sluigi errx(EX_DATAERR, "not any never matches"); 2128117328Sluigi } 2129117328Sluigi /* else do nothing and skip this entry */ 2130128067Smaxim return; 2131117328Sluigi } 2132117328Sluigi /* A single IP can be stored in an optimized format */ 2133187762Sluigi if (d[1] == ~0 && av == NULL && len == 0) { 213498943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 2135117328Sluigi return; 2136117328Sluigi } 2137117328Sluigi len += 2; /* two words... */ 2138117328Sluigi d += 2; 2139117328Sluigi } /* end while */ 2140162363Sjhay if (len + 1 > F_LEN_MASK) 2141162363Sjhay errx(EX_DATAERR, "address list too long"); 2142117328Sluigi cmd->o.len |= len+1; 214398943Sluigi} 214498943Sluigi 214598943Sluigi 2146145246Sbrooks/* n2mask sets n bits of the mask */ 2147187769Sluigivoid 2148145246Sbrooksn2mask(struct in6_addr *mask, int n) 2149145246Sbrooks{ 2150145246Sbrooks static int minimask[9] = 2151145246Sbrooks { 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff }; 2152145246Sbrooks u_char *p; 2153145246Sbrooks 2154145246Sbrooks memset(mask, 0, sizeof(struct in6_addr)); 2155145246Sbrooks p = (u_char *) mask; 2156145246Sbrooks for (; n > 0; p++, n -= 8) { 2157145246Sbrooks if (n >= 8) 2158145246Sbrooks *p = 0xff; 2159145246Sbrooks else 2160145246Sbrooks *p = minimask[n]; 2161145246Sbrooks } 2162145246Sbrooks return; 2163145246Sbrooks} 2164145246Sbrooks 2165145246Sbrooks 216698943Sluigi/* 216798943Sluigi * helper function to process a set of flags and set bits in the 216898943Sluigi * appropriate masks. 216998943Sluigi */ 217098943Sluigistatic void 217198943Sluigifill_flags(ipfw_insn *cmd, enum ipfw_opcodes opcode, 217298943Sluigi struct _s_x *flags, char *p) 217398943Sluigi{ 2174117328Sluigi uint8_t set=0, clear=0; 217598943Sluigi 217698943Sluigi while (p && *p) { 217798943Sluigi char *q; /* points to the separator */ 217898943Sluigi int val; 2179117328Sluigi uint8_t *which; /* mask we are working on */ 218098943Sluigi 218198943Sluigi if (*p == '!') { 218298943Sluigi p++; 218398943Sluigi which = &clear; 218498943Sluigi } else 218598943Sluigi which = &set; 218698943Sluigi q = strchr(p, ','); 218798943Sluigi if (q) 218898943Sluigi *q++ = '\0'; 218998943Sluigi val = match_token(flags, p); 219098943Sluigi if (val <= 0) 219198943Sluigi errx(EX_DATAERR, "invalid flag %s", p); 2192117328Sluigi *which |= (uint8_t)val; 219398943Sluigi p = q; 219498943Sluigi } 219598943Sluigi cmd->opcode = opcode; 219698943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | 1; 219798943Sluigi cmd->arg1 = (set & 0xff) | ( (clear & 0xff) << 8); 219898943Sluigi} 219998943Sluigi 220098943Sluigi 2201187767Sluigivoid 2202187767Sluigiipfw_delete(int ac, char *av[]) 220398943Sluigi{ 2204117328Sluigi uint32_t rulenum; 220598943Sluigi int i; 220698943Sluigi int exitval = EX_OK; 2207101628Sluigi int do_set = 0; 220898943Sluigi 220998943Sluigi 221098943Sluigi av++; ac--; 2211130013Scsjp NEED1("missing rule specification"); 2212140271Sbrooks if (ac > 0 && _substrcmp(*av, "set") == 0) { 2213170923Smaxim /* Do not allow using the following syntax: 2214170923Smaxim * ipfw set N delete set M 2215170923Smaxim */ 2216187764Sluigi if (co.use_set) 2217170923Smaxim errx(EX_DATAERR, "invalid syntax"); 2218101978Sluigi do_set = 1; /* delete set */ 2219101628Sluigi ac--; av++; 2220101978Sluigi } 222198943Sluigi 222298943Sluigi /* Rule number */ 222398943Sluigi while (ac && isdigit(**av)) { 222498943Sluigi i = atoi(*av); av++; ac--; 2225187764Sluigi if (co.do_nat) { 2226165648Spiso exitval = do_cmd(IP_FW_NAT_DEL, &i, sizeof i); 2227165648Spiso if (exitval) { 2228165648Spiso exitval = EX_UNAVAILABLE; 2229165648Spiso warn("rule %u not available", i); 2230165648Spiso } 2231187764Sluigi } else if (co.do_pipe) { 2232187769Sluigi exitval = ipfw_delete_pipe(co.do_pipe, i); 223398943Sluigi } else { 2234187764Sluigi if (co.use_set) 2235170923Smaxim rulenum = (i & 0xffff) | (5 << 24) | 2236187764Sluigi ((co.use_set - 1) << 16); 2237170923Smaxim else 2238101978Sluigi rulenum = (i & 0xffff) | (do_set << 24); 2239117328Sluigi i = do_cmd(IP_FW_DEL, &rulenum, sizeof rulenum); 224098943Sluigi if (i) { 224198943Sluigi exitval = EX_UNAVAILABLE; 224298943Sluigi warn("rule %u: setsockopt(IP_FW_DEL)", 224398943Sluigi rulenum); 224498943Sluigi } 224598943Sluigi } 224698943Sluigi } 224798943Sluigi if (exitval != EX_OK) 224898943Sluigi exit(exitval); 224998943Sluigi} 225098943Sluigi 225198943Sluigi 225298943Sluigi/* 225398943Sluigi * fill the interface structure. We do not check the name as we can 225498943Sluigi * create interfaces dynamically, so checking them at insert time 225598943Sluigi * makes relatively little sense. 2256121816Sbrooks * Interface names containing '*', '?', or '[' are assumed to be shell 2257121816Sbrooks * patterns which match interfaces. 225898943Sluigi */ 225998943Sluigistatic void 226098943Sluigifill_iface(ipfw_insn_if *cmd, char *arg) 226198943Sluigi{ 226298943Sluigi cmd->name[0] = '\0'; 226398943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_if); 226498943Sluigi 226598943Sluigi /* Parse the interface or address */ 2266140271Sbrooks if (strcmp(arg, "any") == 0) 226798943Sluigi cmd->o.len = 0; /* effectively ignore this command */ 226898943Sluigi else if (!isdigit(*arg)) { 2269121816Sbrooks strlcpy(cmd->name, arg, sizeof(cmd->name)); 2270121816Sbrooks cmd->p.glob = strpbrk(arg, "*?[") != NULL ? 1 : 0; 227198943Sluigi } else if (!inet_aton(arg, &cmd->p.ip)) 227298943Sluigi errx(EX_DATAERR, "bad ip address ``%s''", arg); 227398943Sluigi} 227498943Sluigi 227598943Sluigistatic void 2276169424Smaximget_mac_addr_mask(const char *p, uint8_t *addr, uint8_t *mask) 227798943Sluigi{ 227898943Sluigi int i, l; 2279169424Smaxim char *ap, *ptr, *optr; 2280169424Smaxim struct ether_addr *mac; 2281169424Smaxim const char *macset = "0123456789abcdefABCDEF:"; 228298943Sluigi 2283169424Smaxim if (strcmp(p, "any") == 0) { 2284169424Smaxim for (i = 0; i < ETHER_ADDR_LEN; i++) 2285169424Smaxim addr[i] = mask[i] = 0; 228698943Sluigi return; 2287169424Smaxim } 228898943Sluigi 2289169424Smaxim optr = ptr = strdup(p); 2290169424Smaxim if ((ap = strsep(&ptr, "&/")) != NULL && *ap != 0) { 2291169424Smaxim l = strlen(ap); 2292169424Smaxim if (strspn(ap, macset) != l || (mac = ether_aton(ap)) == NULL) 2293169424Smaxim errx(EX_DATAERR, "Incorrect MAC address"); 2294169424Smaxim bcopy(mac, addr, ETHER_ADDR_LEN); 2295169424Smaxim } else 2296169424Smaxim errx(EX_DATAERR, "Incorrect MAC address"); 2297169424Smaxim 2298169424Smaxim if (ptr != NULL) { /* we have mask? */ 2299169424Smaxim if (p[ptr - optr - 1] == '/') { /* mask len */ 2300169424Smaxim l = strtol(ptr, &ap, 10); 2301169424Smaxim if (*ap != 0 || l > ETHER_ADDR_LEN * 8 || l < 0) 2302169424Smaxim errx(EX_DATAERR, "Incorrect mask length"); 2303169424Smaxim for (i = 0; l > 0 && i < ETHER_ADDR_LEN; l -= 8, i++) 2304169424Smaxim mask[i] = (l >= 8) ? 0xff: (~0) << (8 - l); 2305169424Smaxim } else { /* mask */ 2306169424Smaxim l = strlen(ptr); 2307169424Smaxim if (strspn(ptr, macset) != l || 2308169424Smaxim (mac = ether_aton(ptr)) == NULL) 2309169424Smaxim errx(EX_DATAERR, "Incorrect mask"); 2310169424Smaxim bcopy(mac, mask, ETHER_ADDR_LEN); 231198943Sluigi } 2312169424Smaxim } else { /* default mask: ff:ff:ff:ff:ff:ff */ 2313169424Smaxim for (i = 0; i < ETHER_ADDR_LEN; i++) 231498943Sluigi mask[i] = 0xff; 231598943Sluigi } 2316169424Smaxim for (i = 0; i < ETHER_ADDR_LEN; i++) 231798943Sluigi addr[i] &= mask[i]; 2318169424Smaxim 2319169424Smaxim free(optr); 232098943Sluigi} 232198943Sluigi 232298943Sluigi/* 232398943Sluigi * helper function, updates the pointer to cmd with the length 232498943Sluigi * of the current command, and also cleans up the first word of 232598943Sluigi * the new command in case it has been clobbered before. 232698943Sluigi */ 232798943Sluigistatic ipfw_insn * 232898943Sluiginext_cmd(ipfw_insn *cmd) 232998943Sluigi{ 233098943Sluigi cmd += F_LEN(cmd); 233198943Sluigi bzero(cmd, sizeof(*cmd)); 233298943Sluigi return cmd; 233398943Sluigi} 233498943Sluigi 233598943Sluigi/* 2336117469Sluigi * Takes arguments and copies them into a comment 2337117469Sluigi */ 2338117469Sluigistatic void 2339117469Sluigifill_comment(ipfw_insn *cmd, int ac, char **av) 2340117469Sluigi{ 2341117469Sluigi int i, l; 2342117469Sluigi char *p = (char *)(cmd + 1); 2343117577Sluigi 2344117469Sluigi cmd->opcode = O_NOP; 2345117469Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)); 2346117469Sluigi 2347117469Sluigi /* Compute length of comment string. */ 2348117469Sluigi for (i = 0, l = 0; i < ac; i++) 2349117469Sluigi l += strlen(av[i]) + 1; 2350117469Sluigi if (l == 0) 2351117469Sluigi return; 2352117469Sluigi if (l > 84) 2353117469Sluigi errx(EX_DATAERR, 2354117469Sluigi "comment too long (max 80 chars)"); 2355117469Sluigi l = 1 + (l+3)/4; 2356117469Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | l; 2357117469Sluigi for (i = 0; i < ac; i++) { 2358117469Sluigi strcpy(p, av[i]); 2359117469Sluigi p += strlen(av[i]); 2360117469Sluigi *p++ = ' '; 2361117469Sluigi } 2362117469Sluigi *(--p) = '\0'; 2363117469Sluigi} 2364117577Sluigi 2365117469Sluigi/* 236698943Sluigi * A function to fill simple commands of size 1. 236798943Sluigi * Existing flags are preserved. 236898943Sluigi */ 236998943Sluigistatic void 2370117328Sluigifill_cmd(ipfw_insn *cmd, enum ipfw_opcodes opcode, int flags, uint16_t arg) 237198943Sluigi{ 237298943Sluigi cmd->opcode = opcode; 237398943Sluigi cmd->len = ((cmd->len | flags) & (F_NOT | F_OR)) | 1; 237498943Sluigi cmd->arg1 = arg; 237598943Sluigi} 237698943Sluigi 237798943Sluigi/* 237898943Sluigi * Fetch and add the MAC address and type, with masks. This generates one or 237998943Sluigi * two microinstructions, and returns the pointer to the last one. 238098943Sluigi */ 238198943Sluigistatic ipfw_insn * 238298943Sluigiadd_mac(ipfw_insn *cmd, int ac, char *av[]) 238398943Sluigi{ 2384102087Sluigi ipfw_insn_mac *mac; 238598943Sluigi 2386102087Sluigi if (ac < 2) 2387102098Sluigi errx(EX_DATAERR, "MAC dst src"); 238898943Sluigi 238998943Sluigi cmd->opcode = O_MACADDR2; 239098943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | F_INSN_SIZE(ipfw_insn_mac); 239198943Sluigi 239298943Sluigi mac = (ipfw_insn_mac *)cmd; 2393101978Sluigi get_mac_addr_mask(av[0], mac->addr, mac->mask); /* dst */ 2394169424Smaxim get_mac_addr_mask(av[1], &(mac->addr[ETHER_ADDR_LEN]), 2395169424Smaxim &(mac->mask[ETHER_ADDR_LEN])); /* src */ 2396102087Sluigi return cmd; 2397102087Sluigi} 239898943Sluigi 2399102087Sluigistatic ipfw_insn * 2400102087Sluigiadd_mactype(ipfw_insn *cmd, int ac, char *av) 2401102087Sluigi{ 2402102087Sluigi if (ac < 1) 2403102087Sluigi errx(EX_DATAERR, "missing MAC type"); 2404102087Sluigi if (strcmp(av, "any") != 0) { /* we have a non-null type */ 2405102087Sluigi fill_newports((ipfw_insn_u16 *)cmd, av, IPPROTO_ETHERTYPE); 240698943Sluigi cmd->opcode = O_MAC_TYPE; 2407102087Sluigi return cmd; 2408102087Sluigi } else 2409102087Sluigi return NULL; 2410102087Sluigi} 241198943Sluigi 2412102087Sluigistatic ipfw_insn * 2413152923Sumeadd_proto0(ipfw_insn *cmd, char *av, u_char *protop) 2414102087Sluigi{ 2415102087Sluigi struct protoent *pe; 2416152923Sume char *ep; 2417152923Sume int proto; 2418102087Sluigi 2419156315Sume proto = strtol(av, &ep, 10); 2420156315Sume if (*ep != '\0' || proto <= 0) { 2421152923Sume if ((pe = getprotobyname(av)) == NULL) 2422152923Sume return NULL; 2423152923Sume proto = pe->p_proto; 2424152923Sume } 2425145246Sbrooks 2426152923Sume fill_cmd(cmd, O_PROTO, 0, proto); 2427152923Sume *protop = proto; 2428152923Sume return cmd; 2429152923Sume} 2430152923Sume 2431152923Sumestatic ipfw_insn * 2432152923Sumeadd_proto(ipfw_insn *cmd, char *av, u_char *protop) 2433152923Sume{ 2434152923Sume u_char proto = IPPROTO_IP; 2435152923Sume 2436156315Sume if (_substrcmp(av, "all") == 0 || strcmp(av, "ip") == 0) 2437146894Smlaier ; /* do not set O_IP4 nor O_IP6 */ 2438152923Sume else if (strcmp(av, "ip4") == 0) 2439152923Sume /* explicit "just IPv4" rule */ 2440152923Sume fill_cmd(cmd, O_IP4, 0, 0); 2441152923Sume else if (strcmp(av, "ip6") == 0) { 2442152923Sume /* explicit "just IPv6" rule */ 2443152923Sume proto = IPPROTO_IPV6; 2444152923Sume fill_cmd(cmd, O_IP6, 0, 0); 2445152923Sume } else 2446152923Sume return add_proto0(cmd, av, protop); 2447152923Sume 2448152923Sume *protop = proto; 2449152923Sume return cmd; 2450152923Sume} 2451152923Sume 2452152923Sumestatic ipfw_insn * 2453152923Sumeadd_proto_compat(ipfw_insn *cmd, char *av, u_char *protop) 2454152923Sume{ 2455152923Sume u_char proto = IPPROTO_IP; 2456152923Sume 2457152923Sume if (_substrcmp(av, "all") == 0 || strcmp(av, "ip") == 0) 2458152923Sume ; /* do not set O_IP4 nor O_IP6 */ 2459146894Smlaier else if (strcmp(av, "ipv4") == 0 || strcmp(av, "ip4") == 0) 2460146894Smlaier /* explicit "just IPv4" rule */ 2461146894Smlaier fill_cmd(cmd, O_IP4, 0, 0); 2462146894Smlaier else if (strcmp(av, "ipv6") == 0 || strcmp(av, "ip6") == 0) { 2463146894Smlaier /* explicit "just IPv6" rule */ 2464152923Sume proto = IPPROTO_IPV6; 2465146894Smlaier fill_cmd(cmd, O_IP6, 0, 0); 2466152923Sume } else 2467152923Sume return add_proto0(cmd, av, protop); 2468145246Sbrooks 2469152923Sume *protop = proto; 247098943Sluigi return cmd; 247198943Sluigi} 247298943Sluigi 2473102087Sluigistatic ipfw_insn * 2474102087Sluigiadd_srcip(ipfw_insn *cmd, char *av) 2475102087Sluigi{ 2476102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2477102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2478102087Sluigi cmd->opcode = O_IP_SRC_SET; 2479130281Sru else if (cmd->opcode == O_IP_DST_LOOKUP) /* table */ 2480130281Sru cmd->opcode = O_IP_SRC_LOOKUP; 2481102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2482102087Sluigi cmd->opcode = O_IP_SRC_ME; 2483102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2484102087Sluigi cmd->opcode = O_IP_SRC; 2485117328Sluigi else /* addr/mask */ 2486102087Sluigi cmd->opcode = O_IP_SRC_MASK; 2487102087Sluigi return cmd; 2488102087Sluigi} 2489102087Sluigi 2490102087Sluigistatic ipfw_insn * 2491102087Sluigiadd_dstip(ipfw_insn *cmd, char *av) 2492102087Sluigi{ 2493102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2494102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2495102087Sluigi ; 2496130281Sru else if (cmd->opcode == O_IP_DST_LOOKUP) /* table */ 2497130281Sru ; 2498102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2499102087Sluigi cmd->opcode = O_IP_DST_ME; 2500102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2501102087Sluigi cmd->opcode = O_IP_DST; 2502117328Sluigi else /* addr/mask */ 2503102087Sluigi cmd->opcode = O_IP_DST_MASK; 2504102087Sluigi return cmd; 2505102087Sluigi} 2506102087Sluigi 2507102087Sluigistatic ipfw_insn * 2508102087Sluigiadd_ports(ipfw_insn *cmd, char *av, u_char proto, int opcode) 2509102087Sluigi{ 2510140271Sbrooks if (_substrcmp(av, "any") == 0) { 2511102087Sluigi return NULL; 2512102087Sluigi } else if (fill_newports((ipfw_insn_u16 *)cmd, av, proto)) { 2513102087Sluigi /* XXX todo: check that we have a protocol with ports */ 2514102087Sluigi cmd->opcode = opcode; 2515102087Sluigi return cmd; 2516102087Sluigi } 2517102087Sluigi return NULL; 2518102087Sluigi} 2519102087Sluigi 2520145246Sbrooksstatic ipfw_insn * 2521145246Sbrooksadd_src(ipfw_insn *cmd, char *av, u_char proto) 2522145246Sbrooks{ 2523145246Sbrooks struct in6_addr a; 2524158553Smlaier char *host, *ch; 2525158553Smlaier ipfw_insn *ret = NULL; 2526145246Sbrooks 2527158553Smlaier if ((host = strdup(av)) == NULL) 2528158553Smlaier return NULL; 2529158553Smlaier if ((ch = strrchr(host, '/')) != NULL) 2530158553Smlaier *ch = '\0'; 2531158553Smlaier 2532145246Sbrooks if (proto == IPPROTO_IPV6 || strcmp(av, "me6") == 0 || 2533158553Smlaier inet_pton(AF_INET6, host, &a)) 2534158553Smlaier ret = add_srcip6(cmd, av); 2535145246Sbrooks /* XXX: should check for IPv4, not !IPv6 */ 2536161483Sdwmalone if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 || 2537161483Sdwmalone !inet_pton(AF_INET6, host, &a))) 2538158553Smlaier ret = add_srcip(cmd, av); 2539161483Sdwmalone if (ret == NULL && strcmp(av, "any") != 0) 2540158553Smlaier ret = cmd; 2541145246Sbrooks 2542158553Smlaier free(host); 2543158553Smlaier return ret; 2544145246Sbrooks} 2545145246Sbrooks 2546145246Sbrooksstatic ipfw_insn * 2547145246Sbrooksadd_dst(ipfw_insn *cmd, char *av, u_char proto) 2548145246Sbrooks{ 2549145246Sbrooks struct in6_addr a; 2550158553Smlaier char *host, *ch; 2551158553Smlaier ipfw_insn *ret = NULL; 2552145246Sbrooks 2553158553Smlaier if ((host = strdup(av)) == NULL) 2554158553Smlaier return NULL; 2555158553Smlaier if ((ch = strrchr(host, '/')) != NULL) 2556158553Smlaier *ch = '\0'; 2557158553Smlaier 2558145246Sbrooks if (proto == IPPROTO_IPV6 || strcmp(av, "me6") == 0 || 2559158553Smlaier inet_pton(AF_INET6, host, &a)) 2560158553Smlaier ret = add_dstip6(cmd, av); 2561145246Sbrooks /* XXX: should check for IPv4, not !IPv6 */ 2562161483Sdwmalone if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 || 2563161483Sdwmalone !inet_pton(AF_INET6, host, &a))) 2564158553Smlaier ret = add_dstip(cmd, av); 2565161483Sdwmalone if (ret == NULL && strcmp(av, "any") != 0) 2566158553Smlaier ret = cmd; 2567145246Sbrooks 2568158553Smlaier free(host); 2569158553Smlaier return ret; 2570145246Sbrooks} 2571145246Sbrooks 257298943Sluigi/* 257398943Sluigi * Parse arguments and assemble the microinstructions which make up a rule. 257498943Sluigi * Rules are added into the 'rulebuf' and then copied in the correct order 257598943Sluigi * into the actual rule. 257698943Sluigi * 2577136071Sgreen * The syntax for a rule starts with the action, followed by 2578136071Sgreen * optional action parameters, and the various match patterns. 2579108533Sschweikh * In the assembled microcode, the first opcode must be an O_PROBE_STATE 258098943Sluigi * (generated if the rule includes a keep-state option), then the 2581136071Sgreen * various match patterns, log/altq actions, and the actual action. 2582106505Smaxim * 258398943Sluigi */ 2584187767Sluigivoid 2585187767Sluigiipfw_add(int ac, char *av[]) 258698943Sluigi{ 258798943Sluigi /* 258898943Sluigi * rules are added into the 'rulebuf' and then copied in 258998943Sluigi * the correct order into the actual rule. 259098943Sluigi * Some things that need to go out of order (prob, action etc.) 259198943Sluigi * go into actbuf[]. 259298943Sluigi */ 2593117328Sluigi static uint32_t rulebuf[255], actbuf[255], cmdbuf[255]; 259498943Sluigi 2595117469Sluigi ipfw_insn *src, *dst, *cmd, *action, *prev=NULL; 2596102087Sluigi ipfw_insn *first_cmd; /* first match pattern */ 259798943Sluigi 259898943Sluigi struct ip_fw *rule; 259998943Sluigi 260098943Sluigi /* 260198943Sluigi * various flags used to record that we entered some fields. 260298943Sluigi */ 2603101116Sluigi ipfw_insn *have_state = NULL; /* check-state or keep-state */ 2604158879Soleg ipfw_insn *have_log = NULL, *have_altq = NULL, *have_tag = NULL; 2605134475Smaxim size_t len; 260698943Sluigi 260798943Sluigi int i; 260898943Sluigi 260998943Sluigi int open_par = 0; /* open parenthesis ( */ 261098943Sluigi 261198943Sluigi /* proto is here because it is used to fetch ports */ 261298943Sluigi u_char proto = IPPROTO_IP; /* default protocol */ 261398943Sluigi 2614107289Sluigi double match_prob = 1; /* match probability, default is always match */ 2615107289Sluigi 261698943Sluigi bzero(actbuf, sizeof(actbuf)); /* actions go here */ 261798943Sluigi bzero(cmdbuf, sizeof(cmdbuf)); 261898943Sluigi bzero(rulebuf, sizeof(rulebuf)); 261998943Sluigi 262098943Sluigi rule = (struct ip_fw *)rulebuf; 262198943Sluigi cmd = (ipfw_insn *)cmdbuf; 262298943Sluigi action = (ipfw_insn *)actbuf; 262398943Sluigi 262498943Sluigi av++; ac--; 262598943Sluigi 262698943Sluigi /* [rule N] -- Rule number optional */ 262798943Sluigi if (ac && isdigit(**av)) { 262898943Sluigi rule->rulenum = atoi(*av); 262998943Sluigi av++; 263098943Sluigi ac--; 263198943Sluigi } 263298943Sluigi 2633117655Sluigi /* [set N] -- set number (0..RESVD_SET), optional */ 2634140271Sbrooks if (ac > 1 && _substrcmp(*av, "set") == 0) { 2635101628Sluigi int set = strtoul(av[1], NULL, 10); 2636117655Sluigi if (set < 0 || set > RESVD_SET) 2637101628Sluigi errx(EX_DATAERR, "illegal set %s", av[1]); 2638101628Sluigi rule->set = set; 2639101628Sluigi av += 2; ac -= 2; 2640101628Sluigi } 2641101628Sluigi 264298943Sluigi /* [prob D] -- match probability, optional */ 2643140271Sbrooks if (ac > 1 && _substrcmp(*av, "prob") == 0) { 2644107289Sluigi match_prob = strtod(av[1], NULL); 264598943Sluigi 2646107289Sluigi if (match_prob <= 0 || match_prob > 1) 264798943Sluigi errx(EX_DATAERR, "illegal match prob. %s", av[1]); 264898943Sluigi av += 2; ac -= 2; 264998943Sluigi } 265098943Sluigi 265198943Sluigi /* action -- mandatory */ 265298943Sluigi NEED1("missing action"); 265398943Sluigi i = match_token(rule_actions, *av); 265498943Sluigi ac--; av++; 265598943Sluigi action->len = 1; /* default */ 265698943Sluigi switch(i) { 265798943Sluigi case TOK_CHECKSTATE: 2658101116Sluigi have_state = action; 265998943Sluigi action->opcode = O_CHECK_STATE; 266098943Sluigi break; 266198943Sluigi 266298943Sluigi case TOK_ACCEPT: 266398943Sluigi action->opcode = O_ACCEPT; 266498943Sluigi break; 266598943Sluigi 266698943Sluigi case TOK_DENY: 266798943Sluigi action->opcode = O_DENY; 266899475Sluigi action->arg1 = 0; 266998943Sluigi break; 267098943Sluigi 267199475Sluigi case TOK_REJECT: 267299475Sluigi action->opcode = O_REJECT; 267399475Sluigi action->arg1 = ICMP_UNREACH_HOST; 267499475Sluigi break; 267599475Sluigi 267699475Sluigi case TOK_RESET: 267799475Sluigi action->opcode = O_REJECT; 267899475Sluigi action->arg1 = ICMP_REJECT_RST; 267999475Sluigi break; 268099475Sluigi 2681149020Sbz case TOK_RESET6: 2682149020Sbz action->opcode = O_UNREACH6; 2683149020Sbz action->arg1 = ICMP6_UNREACH_RST; 2684149020Sbz break; 2685149020Sbz 268699475Sluigi case TOK_UNREACH: 268799475Sluigi action->opcode = O_REJECT; 268899475Sluigi NEED1("missing reject code"); 268999475Sluigi fill_reject_code(&action->arg1, *av); 269099475Sluigi ac--; av++; 269199475Sluigi break; 269299475Sluigi 2693149020Sbz case TOK_UNREACH6: 2694149020Sbz action->opcode = O_UNREACH6; 2695149020Sbz NEED1("missing unreach code"); 2696149020Sbz fill_unreach6_code(&action->arg1, *av); 2697149020Sbz ac--; av++; 2698149020Sbz break; 2699149020Sbz 270098943Sluigi case TOK_COUNT: 270198943Sluigi action->opcode = O_COUNT; 270298943Sluigi break; 270398943Sluigi 2704176517Spiso case TOK_NAT: 2705176517Spiso action->opcode = O_NAT; 2706176517Spiso action->len = F_INSN_SIZE(ipfw_insn_nat); 2707176517Spiso goto chkarg; 2708178888Sjulian 270998943Sluigi case TOK_QUEUE: 2710153374Sglebius action->opcode = O_QUEUE; 2711153374Sglebius goto chkarg; 271298943Sluigi case TOK_PIPE: 2713153374Sglebius action->opcode = O_PIPE; 2714153374Sglebius goto chkarg; 271598943Sluigi case TOK_SKIPTO: 2716153374Sglebius action->opcode = O_SKIPTO; 2717153374Sglebius goto chkarg; 2718153374Sglebius case TOK_NETGRAPH: 2719153374Sglebius action->opcode = O_NETGRAPH; 2720153374Sglebius goto chkarg; 2721153374Sglebius case TOK_NGTEE: 2722153374Sglebius action->opcode = O_NGTEE; 2723153374Sglebius goto chkarg; 272498943Sluigi case TOK_DIVERT: 2725153374Sglebius action->opcode = O_DIVERT; 2726153374Sglebius goto chkarg; 272798943Sluigi case TOK_TEE: 2728153374Sglebius action->opcode = O_TEE; 2729153374Sglebiuschkarg: 2730153374Sglebius if (!ac) 2731153374Sglebius errx(EX_USAGE, "missing argument for %s", *(av - 1)); 2732153374Sglebius if (isdigit(**av)) { 2733153374Sglebius action->arg1 = strtoul(*av, NULL, 10); 2734153374Sglebius if (action->arg1 <= 0 || action->arg1 >= IP_FW_TABLEARG) 2735153374Sglebius errx(EX_DATAERR, "illegal argument for %s", 2736153374Sglebius *(av - 1)); 2737187762Sluigi } else if (_substrcmp(*av, "tablearg") == 0) { 2738153374Sglebius action->arg1 = IP_FW_TABLEARG; 2739153374Sglebius } else if (i == TOK_DIVERT || i == TOK_TEE) { 274098943Sluigi struct servent *s; 274198943Sluigi setservent(1); 274298943Sluigi s = getservbyname(av[0], "divert"); 274398943Sluigi if (s != NULL) 274498943Sluigi action->arg1 = ntohs(s->s_port); 274598943Sluigi else 274698943Sluigi errx(EX_DATAERR, "illegal divert/tee port"); 2747153374Sglebius } else 2748153374Sglebius errx(EX_DATAERR, "illegal argument for %s", *(av - 1)); 274998943Sluigi ac--; av++; 275098943Sluigi break; 275198943Sluigi 275298943Sluigi case TOK_FORWARD: { 275398943Sluigi ipfw_insn_sa *p = (ipfw_insn_sa *)action; 275498943Sluigi char *s, *end; 275598943Sluigi 275698943Sluigi NEED1("missing forward address[:port]"); 275798943Sluigi 275898943Sluigi action->opcode = O_FORWARD_IP; 275998943Sluigi action->len = F_INSN_SIZE(ipfw_insn_sa); 276098943Sluigi 2761188005Sluigi /* 2762188005Sluigi * In the kernel we assume AF_INET and use only 2763200183Sluigi * sin_port and sin_addr. Remember to set sin_len as 2764200183Sluigi * the routing code seems to use it too. 2765188005Sluigi */ 276698943Sluigi p->sa.sin_family = AF_INET; 2767200183Sluigi p->sa.sin_len = sizeof(struct sockaddr_in); 276898943Sluigi p->sa.sin_port = 0; 276998943Sluigi /* 277098943Sluigi * locate the address-port separator (':' or ',') 277198943Sluigi */ 277298943Sluigi s = strchr(*av, ':'); 277398943Sluigi if (s == NULL) 277498943Sluigi s = strchr(*av, ','); 277598943Sluigi if (s != NULL) { 277698943Sluigi *(s++) = '\0'; 277798943Sluigi i = strtoport(s, &end, 0 /* base */, 0 /* proto */); 277898943Sluigi if (s == end) 277998943Sluigi errx(EX_DATAERR, 278098943Sluigi "illegal forwarding port ``%s''", s); 2781103241Sluigi p->sa.sin_port = (u_short)i; 278298943Sluigi } 2783161456Sjulian if (_substrcmp(*av, "tablearg") == 0) 2784161456Sjulian p->sa.sin_addr.s_addr = INADDR_ANY; 2785161456Sjulian else 2786161424Sjulian lookup_host(*av, &(p->sa.sin_addr)); 278798943Sluigi ac--; av++; 278898943Sluigi break; 2789161424Sjulian } 2790117469Sluigi case TOK_COMMENT: 2791117469Sluigi /* pretend it is a 'count' rule followed by the comment */ 2792117469Sluigi action->opcode = O_COUNT; 2793117469Sluigi ac++; av--; /* go back... */ 2794117469Sluigi break; 2795178888Sjulian 2796178888Sjulian case TOK_SETFIB: 2797178888Sjulian { 2798178888Sjulian int numfibs; 2799178916Sjulian size_t intsize = sizeof(int); 2800178888Sjulian 2801178888Sjulian action->opcode = O_SETFIB; 2802178888Sjulian NEED1("missing fib number"); 2803178888Sjulian action->arg1 = strtoul(*av, NULL, 10); 2804178916Sjulian if (sysctlbyname("net.fibs", &numfibs, &intsize, NULL, 0) == -1) 2805178888Sjulian errx(EX_DATAERR, "fibs not suported.\n"); 2806178888Sjulian if (action->arg1 >= numfibs) /* Temporary */ 2807178888Sjulian errx(EX_DATAERR, "fib too large.\n"); 2808178888Sjulian ac--; av++; 2809178888Sjulian break; 2810178888Sjulian } 2811190633Spiso 2812190633Spiso case TOK_REASS: 2813190633Spiso action->opcode = O_REASS; 2814190633Spiso break; 2815165648Spiso 281698943Sluigi default: 2817102087Sluigi errx(EX_DATAERR, "invalid action %s\n", av[-1]); 281898943Sluigi } 281998943Sluigi action = next_cmd(action); 282098943Sluigi 282198943Sluigi /* 2822136071Sgreen * [altq queuename] -- altq tag, optional 282398943Sluigi * [log [logamount N]] -- log, optional 282498943Sluigi * 2825136071Sgreen * If they exist, it go first in the cmdbuf, but then it is 282698943Sluigi * skipped in the copy section to the end of the buffer. 282798943Sluigi */ 2828136071Sgreen while (ac != 0 && (i = match_token(rule_action_params, *av)) != -1) { 2829136071Sgreen ac--; av++; 2830136071Sgreen switch (i) { 2831136071Sgreen case TOK_LOG: 2832136071Sgreen { 2833136071Sgreen ipfw_insn_log *c = (ipfw_insn_log *)cmd; 2834136071Sgreen int l; 283598943Sluigi 2836136071Sgreen if (have_log) 2837136071Sgreen errx(EX_DATAERR, 2838136071Sgreen "log cannot be specified more than once"); 2839136071Sgreen have_log = (ipfw_insn *)c; 2840136071Sgreen cmd->len = F_INSN_SIZE(ipfw_insn_log); 2841136071Sgreen cmd->opcode = O_LOG; 2842140271Sbrooks if (ac && _substrcmp(*av, "logamount") == 0) { 2843136071Sgreen ac--; av++; 2844136071Sgreen NEED1("logamount requires argument"); 2845136071Sgreen l = atoi(*av); 2846136071Sgreen if (l < 0) 2847136071Sgreen errx(EX_DATAERR, 2848136071Sgreen "logamount must be positive"); 2849136071Sgreen c->max_log = l; 2850136071Sgreen ac--; av++; 2851136071Sgreen } else { 2852136071Sgreen len = sizeof(c->max_log); 2853136071Sgreen if (sysctlbyname("net.inet.ip.fw.verbose_limit", 2854136071Sgreen &c->max_log, &len, NULL, 0) == -1) 2855136071Sgreen errx(1, "sysctlbyname(\"%s\")", 2856136071Sgreen "net.inet.ip.fw.verbose_limit"); 2857136071Sgreen } 2858136071Sgreen } 2859136071Sgreen break; 2860136071Sgreen 2861136071Sgreen case TOK_ALTQ: 2862136071Sgreen { 2863136071Sgreen ipfw_insn_altq *a = (ipfw_insn_altq *)cmd; 2864136071Sgreen 2865136071Sgreen NEED1("missing altq queue name"); 2866136071Sgreen if (have_altq) 2867136071Sgreen errx(EX_DATAERR, 2868136071Sgreen "altq cannot be specified more than once"); 2869136071Sgreen have_altq = (ipfw_insn *)a; 2870136071Sgreen cmd->len = F_INSN_SIZE(ipfw_insn_altq); 2871136071Sgreen cmd->opcode = O_ALTQ; 2872187983Sluigi a->qid = altq_name_to_qid(*av); 287398943Sluigi ac--; av++; 2874136071Sgreen } 2875136071Sgreen break; 2876136071Sgreen 2877158879Soleg case TOK_TAG: 2878159636Soleg case TOK_UNTAG: { 2879159636Soleg uint16_t tag; 2880159636Soleg 2881158879Soleg if (have_tag) 2882159636Soleg errx(EX_USAGE, "tag and untag cannot be " 2883159636Soleg "specified more than once"); 2884193516Sluigi GET_UINT_ARG(tag, IPFW_ARG_MIN, IPFW_ARG_MAX, i, 2885182823Srik rule_action_params); 2886158879Soleg have_tag = cmd; 2887159636Soleg fill_cmd(cmd, O_TAG, (i == TOK_TAG) ? 0: F_NOT, tag); 2888158879Soleg ac--; av++; 2889158879Soleg break; 2890159636Soleg } 2891158879Soleg 2892136071Sgreen default: 2893136071Sgreen abort(); 289498943Sluigi } 289598943Sluigi cmd = next_cmd(cmd); 289698943Sluigi } 289798943Sluigi 2898101116Sluigi if (have_state) /* must be a check-state, we are done */ 289998943Sluigi goto done; 290098943Sluigi 290198943Sluigi#define OR_START(target) \ 290298943Sluigi if (ac && (*av[0] == '(' || *av[0] == '{')) { \ 290398943Sluigi if (open_par) \ 290498943Sluigi errx(EX_USAGE, "nested \"(\" not allowed\n"); \ 2905101641Sluigi prev = NULL; \ 290698943Sluigi open_par = 1; \ 290798943Sluigi if ( (av[0])[1] == '\0') { \ 290898943Sluigi ac--; av++; \ 290998943Sluigi } else \ 291098943Sluigi (*av)++; \ 291198943Sluigi } \ 291298943Sluigi target: \ 291398943Sluigi 291498943Sluigi 291598943Sluigi#define CLOSE_PAR \ 291698943Sluigi if (open_par) { \ 291798943Sluigi if (ac && ( \ 2918140271Sbrooks strcmp(*av, ")") == 0 || \ 2919140271Sbrooks strcmp(*av, "}") == 0)) { \ 2920101641Sluigi prev = NULL; \ 292198943Sluigi open_par = 0; \ 292298943Sluigi ac--; av++; \ 292398943Sluigi } else \ 292498943Sluigi errx(EX_USAGE, "missing \")\"\n"); \ 292598943Sluigi } 2926106505Smaxim 292798943Sluigi#define NOT_BLOCK \ 2928140271Sbrooks if (ac && _substrcmp(*av, "not") == 0) { \ 292998943Sluigi if (cmd->len & F_NOT) \ 293098943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); \ 293198943Sluigi cmd->len |= F_NOT; \ 293298943Sluigi ac--; av++; \ 293398943Sluigi } 293498943Sluigi 293598943Sluigi#define OR_BLOCK(target) \ 2936140271Sbrooks if (ac && _substrcmp(*av, "or") == 0) { \ 293798943Sluigi if (prev == NULL || open_par == 0) \ 293898943Sluigi errx(EX_DATAERR, "invalid OR block"); \ 293998943Sluigi prev->len |= F_OR; \ 294098943Sluigi ac--; av++; \ 294198943Sluigi goto target; \ 294298943Sluigi } \ 294398943Sluigi CLOSE_PAR; 294498943Sluigi 2945102087Sluigi first_cmd = cmd; 2946102098Sluigi 2947102098Sluigi#if 0 294898943Sluigi /* 2949102087Sluigi * MAC addresses, optional. 2950102087Sluigi * If we have this, we skip the part "proto from src to dst" 2951102087Sluigi * and jump straight to the option parsing. 2952102087Sluigi */ 2953102087Sluigi NOT_BLOCK; 2954102087Sluigi NEED1("missing protocol"); 2955140271Sbrooks if (_substrcmp(*av, "MAC") == 0 || 2956140271Sbrooks _substrcmp(*av, "mac") == 0) { 2957102087Sluigi ac--; av++; /* the "MAC" keyword */ 2958102087Sluigi add_mac(cmd, ac, av); /* exits in case of errors */ 2959102087Sluigi cmd = next_cmd(cmd); 2960102087Sluigi ac -= 2; av += 2; /* dst-mac and src-mac */ 2961102087Sluigi NOT_BLOCK; 2962102087Sluigi NEED1("missing mac type"); 2963102087Sluigi if (add_mactype(cmd, ac, av[0])) 2964102087Sluigi cmd = next_cmd(cmd); 2965102087Sluigi ac--; av++; /* any or mac-type */ 2966102087Sluigi goto read_options; 2967102087Sluigi } 2968102098Sluigi#endif 2969102087Sluigi 2970102087Sluigi /* 297198943Sluigi * protocol, mandatory 297298943Sluigi */ 297398943Sluigi OR_START(get_proto); 297498943Sluigi NOT_BLOCK; 297598943Sluigi NEED1("missing protocol"); 2976152923Sume if (add_proto_compat(cmd, *av, &proto)) { 2977102087Sluigi av++; ac--; 2978147105Smlaier if (F_LEN(cmd) != 0) { 2979102087Sluigi prev = cmd; 2980102087Sluigi cmd = next_cmd(cmd); 2981102087Sluigi } 2982102098Sluigi } else if (first_cmd != cmd) { 2983116438Smaxim errx(EX_DATAERR, "invalid protocol ``%s''", *av); 2984102098Sluigi } else 2985102098Sluigi goto read_options; 298698943Sluigi OR_BLOCK(get_proto); 298798943Sluigi 298898943Sluigi /* 2989102087Sluigi * "from", mandatory 299098943Sluigi */ 2991140271Sbrooks if (!ac || _substrcmp(*av, "from") != 0) 299298943Sluigi errx(EX_USAGE, "missing ``from''"); 299398943Sluigi ac--; av++; 299498943Sluigi 299598943Sluigi /* 299698943Sluigi * source IP, mandatory 299798943Sluigi */ 299898943Sluigi OR_START(source_ip); 299998943Sluigi NOT_BLOCK; /* optional "not" */ 300098943Sluigi NEED1("missing source address"); 3001145246Sbrooks if (add_src(cmd, *av, proto)) { 3002102087Sluigi ac--; av++; 3003102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 3004102087Sluigi prev = cmd; 3005102087Sluigi cmd = next_cmd(cmd); 3006102087Sluigi } 3007145246Sbrooks } else 3008145246Sbrooks errx(EX_USAGE, "bad source address %s", *av); 300998943Sluigi OR_BLOCK(source_ip); 301098943Sluigi 301198943Sluigi /* 301298943Sluigi * source ports, optional 301398943Sluigi */ 301498943Sluigi NOT_BLOCK; /* optional "not" */ 3015101641Sluigi if (ac) { 3016140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3017102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 3018102087Sluigi ac--; av++; 3019102087Sluigi if (F_LEN(cmd) != 0) 3020102087Sluigi cmd = next_cmd(cmd); 3021101641Sluigi } 302298943Sluigi } 302398943Sluigi 302498943Sluigi /* 3025102087Sluigi * "to", mandatory 302698943Sluigi */ 3027140271Sbrooks if (!ac || _substrcmp(*av, "to") != 0) 302898943Sluigi errx(EX_USAGE, "missing ``to''"); 302998943Sluigi av++; ac--; 303098943Sluigi 303198943Sluigi /* 303298943Sluigi * destination, mandatory 303398943Sluigi */ 303498943Sluigi OR_START(dest_ip); 303598943Sluigi NOT_BLOCK; /* optional "not" */ 303698943Sluigi NEED1("missing dst address"); 3037145246Sbrooks if (add_dst(cmd, *av, proto)) { 3038102087Sluigi ac--; av++; 3039102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 3040102087Sluigi prev = cmd; 3041102087Sluigi cmd = next_cmd(cmd); 3042102087Sluigi } 3043145246Sbrooks } else 3044145246Sbrooks errx( EX_USAGE, "bad destination address %s", *av); 304598943Sluigi OR_BLOCK(dest_ip); 304698943Sluigi 304798943Sluigi /* 304898943Sluigi * dest. ports, optional 304998943Sluigi */ 305098943Sluigi NOT_BLOCK; /* optional "not" */ 3051101641Sluigi if (ac) { 3052140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3053102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 3054102087Sluigi ac--; av++; 3055102087Sluigi if (F_LEN(cmd) != 0) 3056102087Sluigi cmd = next_cmd(cmd); 3057101641Sluigi } 305898943Sluigi } 305998943Sluigi 306098943Sluigiread_options: 3061102087Sluigi if (ac && first_cmd == cmd) { 3062102087Sluigi /* 3063102087Sluigi * nothing specified so far, store in the rule to ease 3064102087Sluigi * printout later. 3065102087Sluigi */ 3066102087Sluigi rule->_pad = 1; 3067102087Sluigi } 306898943Sluigi prev = NULL; 306998943Sluigi while (ac) { 3070101641Sluigi char *s; 3071101641Sluigi ipfw_insn_u32 *cmd32; /* alias for cmd */ 307298943Sluigi 3073101641Sluigi s = *av; 3074101641Sluigi cmd32 = (ipfw_insn_u32 *)cmd; 3075101641Sluigi 307698943Sluigi if (*s == '!') { /* alternate syntax for NOT */ 307798943Sluigi if (cmd->len & F_NOT) 307898943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 307998943Sluigi cmd->len = F_NOT; 308098943Sluigi s++; 308198943Sluigi } 308298943Sluigi i = match_token(rule_options, s); 308398943Sluigi ac--; av++; 308498943Sluigi switch(i) { 308598943Sluigi case TOK_NOT: 308698943Sluigi if (cmd->len & F_NOT) 308798943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 308898943Sluigi cmd->len = F_NOT; 308998943Sluigi break; 309098943Sluigi 309198943Sluigi case TOK_OR: 3092101641Sluigi if (open_par == 0 || prev == NULL) 309398943Sluigi errx(EX_USAGE, "invalid \"or\" block\n"); 309498943Sluigi prev->len |= F_OR; 309598943Sluigi break; 3096101641Sluigi 3097101641Sluigi case TOK_STARTBRACE: 3098101641Sluigi if (open_par) 3099101641Sluigi errx(EX_USAGE, "+nested \"(\" not allowed\n"); 3100101641Sluigi open_par = 1; 3101101641Sluigi break; 3102101641Sluigi 3103101641Sluigi case TOK_ENDBRACE: 3104101641Sluigi if (!open_par) 3105101641Sluigi errx(EX_USAGE, "+missing \")\"\n"); 3106101641Sluigi open_par = 0; 3107102087Sluigi prev = NULL; 3108101641Sluigi break; 3109101641Sluigi 311098943Sluigi case TOK_IN: 311198943Sluigi fill_cmd(cmd, O_IN, 0, 0); 311298943Sluigi break; 311398943Sluigi 311498943Sluigi case TOK_OUT: 311598943Sluigi cmd->len ^= F_NOT; /* toggle F_NOT */ 311698943Sluigi fill_cmd(cmd, O_IN, 0, 0); 311798943Sluigi break; 311898943Sluigi 3119136073Sgreen case TOK_DIVERTED: 3120136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 3); 3121136073Sgreen break; 3122136073Sgreen 3123136073Sgreen case TOK_DIVERTEDLOOPBACK: 3124136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 1); 3125136073Sgreen break; 3126136073Sgreen 3127136073Sgreen case TOK_DIVERTEDOUTPUT: 3128136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 2); 3129136073Sgreen break; 3130136073Sgreen 313198943Sluigi case TOK_FRAG: 313298943Sluigi fill_cmd(cmd, O_FRAG, 0, 0); 313398943Sluigi break; 313498943Sluigi 313598943Sluigi case TOK_LAYER2: 313698943Sluigi fill_cmd(cmd, O_LAYER2, 0, 0); 313798943Sluigi break; 313898943Sluigi 313998943Sluigi case TOK_XMIT: 314098943Sluigi case TOK_RECV: 314198943Sluigi case TOK_VIA: 314298943Sluigi NEED1("recv, xmit, via require interface name" 314398943Sluigi " or address"); 314498943Sluigi fill_iface((ipfw_insn_if *)cmd, av[0]); 314598943Sluigi ac--; av++; 314698943Sluigi if (F_LEN(cmd) == 0) /* not a valid address */ 314798943Sluigi break; 314898943Sluigi if (i == TOK_XMIT) 314998943Sluigi cmd->opcode = O_XMIT; 315098943Sluigi else if (i == TOK_RECV) 315198943Sluigi cmd->opcode = O_RECV; 315298943Sluigi else if (i == TOK_VIA) 315398943Sluigi cmd->opcode = O_VIA; 315498943Sluigi break; 315598943Sluigi 315699475Sluigi case TOK_ICMPTYPES: 315799475Sluigi NEED1("icmptypes requires list of types"); 315899475Sluigi fill_icmptypes((ipfw_insn_u32 *)cmd, *av); 315999475Sluigi av++; ac--; 316099475Sluigi break; 3161145246Sbrooks 3162145246Sbrooks case TOK_ICMP6TYPES: 3163145246Sbrooks NEED1("icmptypes requires list of types"); 3164145246Sbrooks fill_icmp6types((ipfw_insn_icmp6 *)cmd, *av); 3165145246Sbrooks av++; ac--; 3166145246Sbrooks break; 316799475Sluigi 316898943Sluigi case TOK_IPTTL: 316998943Sluigi NEED1("ipttl requires TTL"); 3170116690Sluigi if (strpbrk(*av, "-,")) { 3171116690Sluigi if (!add_ports(cmd, *av, 0, O_IPTTL)) 3172116690Sluigi errx(EX_DATAERR, "invalid ipttl %s", *av); 3173116690Sluigi } else 3174116690Sluigi fill_cmd(cmd, O_IPTTL, 0, strtoul(*av, NULL, 0)); 317598943Sluigi ac--; av++; 317698943Sluigi break; 317798943Sluigi 317898943Sluigi case TOK_IPID: 3179116690Sluigi NEED1("ipid requires id"); 3180116690Sluigi if (strpbrk(*av, "-,")) { 3181116690Sluigi if (!add_ports(cmd, *av, 0, O_IPID)) 3182116690Sluigi errx(EX_DATAERR, "invalid ipid %s", *av); 3183116690Sluigi } else 3184116690Sluigi fill_cmd(cmd, O_IPID, 0, strtoul(*av, NULL, 0)); 318598943Sluigi ac--; av++; 318698943Sluigi break; 318798943Sluigi 318898943Sluigi case TOK_IPLEN: 318998943Sluigi NEED1("iplen requires length"); 3190116690Sluigi if (strpbrk(*av, "-,")) { 3191116690Sluigi if (!add_ports(cmd, *av, 0, O_IPLEN)) 3192116690Sluigi errx(EX_DATAERR, "invalid ip len %s", *av); 3193116690Sluigi } else 3194116690Sluigi fill_cmd(cmd, O_IPLEN, 0, strtoul(*av, NULL, 0)); 319598943Sluigi ac--; av++; 319698943Sluigi break; 319798943Sluigi 319898943Sluigi case TOK_IPVER: 319998943Sluigi NEED1("ipver requires version"); 320098943Sluigi fill_cmd(cmd, O_IPVER, 0, strtoul(*av, NULL, 0)); 320198943Sluigi ac--; av++; 320298943Sluigi break; 320398943Sluigi 320499475Sluigi case TOK_IPPRECEDENCE: 320599475Sluigi NEED1("ipprecedence requires value"); 320699475Sluigi fill_cmd(cmd, O_IPPRECEDENCE, 0, 320799475Sluigi (strtoul(*av, NULL, 0) & 7) << 5); 320899475Sluigi ac--; av++; 320999475Sluigi break; 321099475Sluigi 321198943Sluigi case TOK_IPOPTS: 321298943Sluigi NEED1("missing argument for ipoptions"); 3213101116Sluigi fill_flags(cmd, O_IPOPT, f_ipopts, *av); 321498943Sluigi ac--; av++; 321598943Sluigi break; 321698943Sluigi 321799475Sluigi case TOK_IPTOS: 321899475Sluigi NEED1("missing argument for iptos"); 3219101116Sluigi fill_flags(cmd, O_IPTOS, f_iptos, *av); 322099475Sluigi ac--; av++; 322199475Sluigi break; 322299475Sluigi 322398943Sluigi case TOK_UID: 322498943Sluigi NEED1("uid requires argument"); 322598943Sluigi { 322698943Sluigi char *end; 322798943Sluigi uid_t uid; 322898943Sluigi struct passwd *pwd; 322998943Sluigi 323098943Sluigi cmd->opcode = O_UID; 323198943Sluigi uid = strtoul(*av, &end, 0); 323298943Sluigi pwd = (*end == '\0') ? getpwuid(uid) : getpwnam(*av); 323398943Sluigi if (pwd == NULL) 323498943Sluigi errx(EX_DATAERR, "uid \"%s\" nonexistent", *av); 3235106504Smaxim cmd32->d[0] = pwd->pw_uid; 3236135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 323798943Sluigi ac--; av++; 323898943Sluigi } 323998943Sluigi break; 324098943Sluigi 324198943Sluigi case TOK_GID: 324298943Sluigi NEED1("gid requires argument"); 324398943Sluigi { 324498943Sluigi char *end; 324598943Sluigi gid_t gid; 324698943Sluigi struct group *grp; 324798943Sluigi 324898943Sluigi cmd->opcode = O_GID; 324998943Sluigi gid = strtoul(*av, &end, 0); 325098943Sluigi grp = (*end == '\0') ? getgrgid(gid) : getgrnam(*av); 325198943Sluigi if (grp == NULL) 325298943Sluigi errx(EX_DATAERR, "gid \"%s\" nonexistent", *av); 3253106504Smaxim cmd32->d[0] = grp->gr_gid; 3254135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 325598943Sluigi ac--; av++; 325698943Sluigi } 325798943Sluigi break; 325898943Sluigi 3259133600Scsjp case TOK_JAIL: 3260133600Scsjp NEED1("jail requires argument"); 3261133600Scsjp { 3262133600Scsjp char *end; 3263133600Scsjp int jid; 3264133600Scsjp 3265133600Scsjp cmd->opcode = O_JAIL; 3266133600Scsjp jid = (int)strtol(*av, &end, 0); 3267133600Scsjp if (jid < 0 || *end != '\0') 3268133600Scsjp errx(EX_DATAERR, "jail requires prison ID"); 3269135554Scsjp cmd32->d[0] = (uint32_t)jid; 3270135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 3271133600Scsjp ac--; av++; 3272133600Scsjp } 3273133600Scsjp break; 3274133600Scsjp 327598943Sluigi case TOK_ESTAB: 327698943Sluigi fill_cmd(cmd, O_ESTAB, 0, 0); 327798943Sluigi break; 327898943Sluigi 327998943Sluigi case TOK_SETUP: 328098943Sluigi fill_cmd(cmd, O_TCPFLAGS, 0, 328198943Sluigi (TH_SYN) | ( (TH_ACK) & 0xff) <<8 ); 328298943Sluigi break; 328398943Sluigi 3284136075Sgreen case TOK_TCPDATALEN: 3285136075Sgreen NEED1("tcpdatalen requires length"); 3286136075Sgreen if (strpbrk(*av, "-,")) { 3287136075Sgreen if (!add_ports(cmd, *av, 0, O_TCPDATALEN)) 3288136075Sgreen errx(EX_DATAERR, "invalid tcpdata len %s", *av); 3289136075Sgreen } else 3290136075Sgreen fill_cmd(cmd, O_TCPDATALEN, 0, 3291136075Sgreen strtoul(*av, NULL, 0)); 3292136075Sgreen ac--; av++; 3293136075Sgreen break; 3294136075Sgreen 329598943Sluigi case TOK_TCPOPTS: 329698943Sluigi NEED1("missing argument for tcpoptions"); 329798943Sluigi fill_flags(cmd, O_TCPOPTS, f_tcpopts, *av); 329898943Sluigi ac--; av++; 329998943Sluigi break; 330098943Sluigi 330198943Sluigi case TOK_TCPSEQ: 330298943Sluigi case TOK_TCPACK: 330398943Sluigi NEED1("tcpseq/tcpack requires argument"); 330498943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 330598943Sluigi cmd->opcode = (i == TOK_TCPSEQ) ? O_TCPSEQ : O_TCPACK; 330698943Sluigi cmd32->d[0] = htonl(strtoul(*av, NULL, 0)); 330798943Sluigi ac--; av++; 330898943Sluigi break; 330998943Sluigi 331098943Sluigi case TOK_TCPWIN: 331198943Sluigi NEED1("tcpwin requires length"); 331298943Sluigi fill_cmd(cmd, O_TCPWIN, 0, 331398943Sluigi htons(strtoul(*av, NULL, 0))); 331498943Sluigi ac--; av++; 331598943Sluigi break; 331698943Sluigi 331798943Sluigi case TOK_TCPFLAGS: 331898943Sluigi NEED1("missing argument for tcpflags"); 331998943Sluigi cmd->opcode = O_TCPFLAGS; 332098943Sluigi fill_flags(cmd, O_TCPFLAGS, f_tcpflags, *av); 332198943Sluigi ac--; av++; 332298943Sluigi break; 332398943Sluigi 332498943Sluigi case TOK_KEEPSTATE: 3325101641Sluigi if (open_par) 3326101641Sluigi errx(EX_USAGE, "keep-state cannot be part " 3327101641Sluigi "of an or block"); 332899909Sluigi if (have_state) 3329101116Sluigi errx(EX_USAGE, "only one of keep-state " 333099909Sluigi "and limit is allowed"); 3331101116Sluigi have_state = cmd; 333298943Sluigi fill_cmd(cmd, O_KEEP_STATE, 0, 0); 333398943Sluigi break; 333498943Sluigi 3335159636Soleg case TOK_LIMIT: { 3336159636Soleg ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 3337159636Soleg int val; 3338159636Soleg 3339101641Sluigi if (open_par) 3340159636Soleg errx(EX_USAGE, 3341159636Soleg "limit cannot be part of an or block"); 334299909Sluigi if (have_state) 3343168819Smaxim errx(EX_USAGE, "only one of keep-state and " 3344159636Soleg "limit is allowed"); 3345101116Sluigi have_state = cmd; 334698943Sluigi 334798943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_limit); 334898943Sluigi cmd->opcode = O_LIMIT; 3349159636Soleg c->limit_mask = c->conn_limit = 0; 335098943Sluigi 3351159636Soleg while (ac > 0) { 3352159636Soleg if ((val = match_token(limit_masks, *av)) <= 0) 335398943Sluigi break; 335498943Sluigi c->limit_mask |= val; 335598943Sluigi ac--; av++; 335698943Sluigi } 3357159636Soleg 335898943Sluigi if (c->limit_mask == 0) 3359159636Soleg errx(EX_USAGE, "limit: missing limit mask"); 3360159636Soleg 3361193516Sluigi GET_UINT_ARG(c->conn_limit, IPFW_ARG_MIN, IPFW_ARG_MAX, 3362182823Srik TOK_LIMIT, rule_options); 3363159636Soleg 336498943Sluigi ac--; av++; 336598943Sluigi break; 3366159636Soleg } 336798943Sluigi 3368102087Sluigi case TOK_PROTO: 3369102087Sluigi NEED1("missing protocol"); 3370145246Sbrooks if (add_proto(cmd, *av, &proto)) { 3371102087Sluigi ac--; av++; 3372102098Sluigi } else 3373116438Smaxim errx(EX_DATAERR, "invalid protocol ``%s''", 3374116438Smaxim *av); 3375102087Sluigi break; 3376106505Smaxim 3377102087Sluigi case TOK_SRCIP: 3378102087Sluigi NEED1("missing source IP"); 3379102087Sluigi if (add_srcip(cmd, *av)) { 3380102087Sluigi ac--; av++; 3381102087Sluigi } 3382102087Sluigi break; 3383102087Sluigi 3384102087Sluigi case TOK_DSTIP: 3385102087Sluigi NEED1("missing destination IP"); 3386102087Sluigi if (add_dstip(cmd, *av)) { 3387102087Sluigi ac--; av++; 3388102087Sluigi } 3389102087Sluigi break; 3390102087Sluigi 3391145246Sbrooks case TOK_SRCIP6: 3392145246Sbrooks NEED1("missing source IP6"); 3393145246Sbrooks if (add_srcip6(cmd, *av)) { 3394145246Sbrooks ac--; av++; 3395145246Sbrooks } 3396145246Sbrooks break; 3397145246Sbrooks 3398145246Sbrooks case TOK_DSTIP6: 3399145246Sbrooks NEED1("missing destination IP6"); 3400145246Sbrooks if (add_dstip6(cmd, *av)) { 3401145246Sbrooks ac--; av++; 3402145246Sbrooks } 3403145246Sbrooks break; 3404145246Sbrooks 3405102087Sluigi case TOK_SRCPORT: 3406102087Sluigi NEED1("missing source port"); 3407140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3408102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 3409102087Sluigi ac--; av++; 3410102087Sluigi } else 3411102087Sluigi errx(EX_DATAERR, "invalid source port %s", *av); 3412102087Sluigi break; 3413102087Sluigi 3414102087Sluigi case TOK_DSTPORT: 3415102087Sluigi NEED1("missing destination port"); 3416140271Sbrooks if (_substrcmp(*av, "any") == 0 || 3417102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 3418102087Sluigi ac--; av++; 3419102087Sluigi } else 3420102087Sluigi errx(EX_DATAERR, "invalid destination port %s", 3421102087Sluigi *av); 3422102087Sluigi break; 3423102087Sluigi 3424102087Sluigi case TOK_MAC: 3425102087Sluigi if (add_mac(cmd, ac, av)) { 3426102087Sluigi ac -= 2; av += 2; 3427102087Sluigi } 3428102087Sluigi break; 3429102087Sluigi 3430102087Sluigi case TOK_MACTYPE: 3431102087Sluigi NEED1("missing mac type"); 3432102087Sluigi if (!add_mactype(cmd, ac, *av)) 3433116438Smaxim errx(EX_DATAERR, "invalid mac type %s", *av); 3434102087Sluigi ac--; av++; 3435102087Sluigi break; 3436102087Sluigi 3437112250Scjc case TOK_VERREVPATH: 3438112250Scjc fill_cmd(cmd, O_VERREVPATH, 0, 0); 3439112250Scjc break; 3440116919Sluigi 3441128575Sandre case TOK_VERSRCREACH: 3442128575Sandre fill_cmd(cmd, O_VERSRCREACH, 0, 0); 3443128575Sandre break; 3444128575Sandre 3445133387Sandre case TOK_ANTISPOOF: 3446133387Sandre fill_cmd(cmd, O_ANTISPOOF, 0, 0); 3447133387Sandre break; 3448133387Sandre 3449117241Sluigi case TOK_IPSEC: 3450117241Sluigi fill_cmd(cmd, O_IPSEC, 0, 0); 3451117241Sluigi break; 3452117241Sluigi 3453145246Sbrooks case TOK_IPV6: 3454145246Sbrooks fill_cmd(cmd, O_IP6, 0, 0); 3455145246Sbrooks break; 3456145246Sbrooks 3457146894Smlaier case TOK_IPV4: 3458146894Smlaier fill_cmd(cmd, O_IP4, 0, 0); 3459146894Smlaier break; 3460146894Smlaier 3461145246Sbrooks case TOK_EXT6HDR: 3462145246Sbrooks fill_ext6hdr( cmd, *av ); 3463145246Sbrooks ac--; av++; 3464145246Sbrooks break; 3465145246Sbrooks 3466145246Sbrooks case TOK_FLOWID: 3467145246Sbrooks if (proto != IPPROTO_IPV6 ) 3468145246Sbrooks errx( EX_USAGE, "flow-id filter is active " 3469145246Sbrooks "only for ipv6 protocol\n"); 3470145246Sbrooks fill_flow6( (ipfw_insn_u32 *) cmd, *av ); 3471145246Sbrooks ac--; av++; 3472145246Sbrooks break; 3473145246Sbrooks 3474117469Sluigi case TOK_COMMENT: 3475117469Sluigi fill_comment(cmd, ac, av); 3476117469Sluigi av += ac; 3477117469Sluigi ac = 0; 3478117469Sluigi break; 3479117469Sluigi 3480158879Soleg case TOK_TAGGED: 3481159636Soleg if (ac > 0 && strpbrk(*av, "-,")) { 3482158879Soleg if (!add_ports(cmd, *av, 0, O_TAGGED)) 3483159636Soleg errx(EX_DATAERR, "tagged: invalid tag" 3484159636Soleg " list: %s", *av); 3485158879Soleg } 3486159636Soleg else { 3487159636Soleg uint16_t tag; 3488159636Soleg 3489193516Sluigi GET_UINT_ARG(tag, IPFW_ARG_MIN, IPFW_ARG_MAX, 3490182823Srik TOK_TAGGED, rule_options); 3491159636Soleg fill_cmd(cmd, O_TAGGED, 0, tag); 3492159636Soleg } 3493158879Soleg ac--; av++; 3494158879Soleg break; 3495158879Soleg 3496178888Sjulian case TOK_FIB: 3497178888Sjulian NEED1("fib requires fib number"); 3498178888Sjulian fill_cmd(cmd, O_FIB, 0, strtoul(*av, NULL, 0)); 3499178888Sjulian ac--; av++; 3500178888Sjulian break; 3501178888Sjulian 3502200567Sluigi case TOK_LOOKUP: { 3503200567Sluigi ipfw_insn_u32 *c = (ipfw_insn_u32 *)cmd; 3504200567Sluigi char *p; 3505200567Sluigi int j; 3506200567Sluigi 3507200567Sluigi if (ac < 2) 3508200567Sluigi errx(EX_USAGE, "format: lookup argument tablenum"); 3509200567Sluigi cmd->opcode = O_IP_DST_LOOKUP; 3510200567Sluigi cmd->len |= F_INSN_SIZE(ipfw_insn) + 2; 3511200567Sluigi i = match_token(rule_options, *av); 3512200567Sluigi for (j = 0; lookup_key[j] >= 0 ; j++) { 3513200567Sluigi if (i == lookup_key[j]) 3514200567Sluigi break; 3515200567Sluigi } 3516200567Sluigi if (lookup_key[j] <= 0) 3517200567Sluigi errx(EX_USAGE, "format: cannot lookup on %s", *av); 3518200567Sluigi c->d[1] = j; // i converted to option 3519200567Sluigi ac--; av++; 3520200567Sluigi cmd->arg1 = strtoul(*av, &p, 0); 3521200567Sluigi if (p && *p) 3522200567Sluigi errx(EX_USAGE, "format: lookup argument tablenum"); 3523200567Sluigi ac--; av++; 3524200567Sluigi } 3525200567Sluigi break; 3526200567Sluigi 352798943Sluigi default: 352898943Sluigi errx(EX_USAGE, "unrecognised option [%d] %s\n", i, s); 352998943Sluigi } 353098943Sluigi if (F_LEN(cmd) > 0) { /* prepare to advance */ 353198943Sluigi prev = cmd; 353298943Sluigi cmd = next_cmd(cmd); 353398943Sluigi } 353498943Sluigi } 353598943Sluigi 353698943Sluigidone: 353798943Sluigi /* 353898943Sluigi * Now copy stuff into the rule. 353998943Sluigi * If we have a keep-state option, the first instruction 354098943Sluigi * must be a PROBE_STATE (which is generated here). 354198943Sluigi * If we have a LOG option, it was stored as the first command, 354298943Sluigi * and now must be moved to the top of the action part. 354398943Sluigi */ 354498943Sluigi dst = (ipfw_insn *)rule->cmd; 354598943Sluigi 354698943Sluigi /* 3547107289Sluigi * First thing to write into the command stream is the match probability. 3548107289Sluigi */ 3549107289Sluigi if (match_prob != 1) { /* 1 means always match */ 3550107289Sluigi dst->opcode = O_PROB; 3551107289Sluigi dst->len = 2; 3552107289Sluigi *((int32_t *)(dst+1)) = (int32_t)(match_prob * 0x7fffffff); 3553107289Sluigi dst += dst->len; 3554107289Sluigi } 3555107289Sluigi 3556107289Sluigi /* 355798943Sluigi * generate O_PROBE_STATE if necessary 355898943Sluigi */ 3559101116Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 356098943Sluigi fill_cmd(dst, O_PROBE_STATE, 0, 0); 356198943Sluigi dst = next_cmd(dst); 356298943Sluigi } 3563158879Soleg 3564158879Soleg /* copy all commands but O_LOG, O_KEEP_STATE, O_LIMIT, O_ALTQ, O_TAG */ 356598943Sluigi for (src = (ipfw_insn *)cmdbuf; src != cmd; src += i) { 356698943Sluigi i = F_LEN(src); 356798943Sluigi 3568101116Sluigi switch (src->opcode) { 3569101116Sluigi case O_LOG: 3570101116Sluigi case O_KEEP_STATE: 3571101116Sluigi case O_LIMIT: 3572136071Sgreen case O_ALTQ: 3573158879Soleg case O_TAG: 3574101116Sluigi break; 3575101116Sluigi default: 3576117328Sluigi bcopy(src, dst, i * sizeof(uint32_t)); 357798943Sluigi dst += i; 357898943Sluigi } 357998943Sluigi } 358098943Sluigi 358198943Sluigi /* 3582101116Sluigi * put back the have_state command as last opcode 3583101116Sluigi */ 3584101295Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 3585101116Sluigi i = F_LEN(have_state); 3586117328Sluigi bcopy(have_state, dst, i * sizeof(uint32_t)); 3587101116Sluigi dst += i; 3588101116Sluigi } 3589101116Sluigi /* 359098943Sluigi * start action section 359198943Sluigi */ 359298943Sluigi rule->act_ofs = dst - rule->cmd; 359398943Sluigi 3594158879Soleg /* put back O_LOG, O_ALTQ, O_TAG if necessary */ 3595136071Sgreen if (have_log) { 3596136071Sgreen i = F_LEN(have_log); 3597136071Sgreen bcopy(have_log, dst, i * sizeof(uint32_t)); 359898943Sluigi dst += i; 359998943Sluigi } 3600136071Sgreen if (have_altq) { 3601136071Sgreen i = F_LEN(have_altq); 3602136071Sgreen bcopy(have_altq, dst, i * sizeof(uint32_t)); 3603136071Sgreen dst += i; 3604136071Sgreen } 3605158879Soleg if (have_tag) { 3606158879Soleg i = F_LEN(have_tag); 3607158879Soleg bcopy(have_tag, dst, i * sizeof(uint32_t)); 3608158879Soleg dst += i; 3609158879Soleg } 361098943Sluigi /* 361198943Sluigi * copy all other actions 361298943Sluigi */ 361398943Sluigi for (src = (ipfw_insn *)actbuf; src != action; src += i) { 361498943Sluigi i = F_LEN(src); 3615117328Sluigi bcopy(src, dst, i * sizeof(uint32_t)); 361698943Sluigi dst += i; 361798943Sluigi } 361898943Sluigi 3619117328Sluigi rule->cmd_len = (uint32_t *)dst - (uint32_t *)(rule->cmd); 3620117469Sluigi i = (char *)dst - (char *)rule; 3621119740Stmm if (do_cmd(IP_FW_ADD, rule, (uintptr_t)&i) == -1) 362298943Sluigi err(EX_UNAVAILABLE, "getsockopt(%s)", "IP_FW_ADD"); 3623187764Sluigi if (!co.do_quiet) 3624117469Sluigi show_ipfw(rule, 0, 0); 362598943Sluigi} 362698943Sluigi 3627187767Sluigi/* 3628187767Sluigi * clear the counters or the log counters. 3629187767Sluigi */ 3630187767Sluigivoid 3631187767Sluigiipfw_zero(int ac, char *av[], int optname /* 0 = IP_FW_ZERO, 1 = IP_FW_RESETLOG */) 363298943Sluigi{ 3633170923Smaxim uint32_t arg, saved_arg; 363498943Sluigi int failed = EX_OK; 3635170923Smaxim char const *errstr; 3636187767Sluigi char const *name = optname ? "RESETLOG" : "ZERO"; 363798943Sluigi 3638187767Sluigi optname = optname ? IP_FW_RESETLOG : IP_FW_ZERO; 3639187767Sluigi 364098943Sluigi av++; ac--; 364198943Sluigi 364298943Sluigi if (!ac) { 364398943Sluigi /* clear all entries */ 3644117328Sluigi if (do_cmd(optname, NULL, 0) < 0) 3645117328Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_FW_%s)", name); 3646187764Sluigi if (!co.do_quiet) 3647117328Sluigi printf("%s.\n", optname == IP_FW_ZERO ? 3648117328Sluigi "Accounting cleared":"Logging counts reset"); 364998943Sluigi 365098943Sluigi return; 365198943Sluigi } 365298943Sluigi 365398943Sluigi while (ac) { 365498943Sluigi /* Rule number */ 365598943Sluigi if (isdigit(**av)) { 3656170923Smaxim arg = strtonum(*av, 0, 0xffff, &errstr); 3657170923Smaxim if (errstr) 3658170923Smaxim errx(EX_DATAERR, 3659170923Smaxim "invalid rule number %s\n", *av); 3660170923Smaxim saved_arg = arg; 3661187764Sluigi if (co.use_set) 3662187764Sluigi arg |= (1 << 24) | ((co.use_set - 1) << 16); 366398943Sluigi av++; 366498943Sluigi ac--; 3665170923Smaxim if (do_cmd(optname, &arg, sizeof(arg))) { 3666117328Sluigi warn("rule %u: setsockopt(IP_FW_%s)", 3667170923Smaxim saved_arg, name); 366898943Sluigi failed = EX_UNAVAILABLE; 3669187764Sluigi } else if (!co.do_quiet) 3670170923Smaxim printf("Entry %d %s.\n", saved_arg, 3671117328Sluigi optname == IP_FW_ZERO ? 3672117328Sluigi "cleared" : "logging count reset"); 367398943Sluigi } else { 367498943Sluigi errx(EX_USAGE, "invalid rule number ``%s''", *av); 367598943Sluigi } 367698943Sluigi } 367798943Sluigi if (failed != EX_OK) 367898943Sluigi exit(failed); 367998943Sluigi} 368098943Sluigi 3681187767Sluigivoid 3682187767Sluigiipfw_flush(int force) 368398943Sluigi{ 3684187764Sluigi int cmd = co.do_pipe ? IP_DUMMYNET_FLUSH : IP_FW_FLUSH; 368598943Sluigi 3686187764Sluigi if (!force && !co.do_quiet) { /* need to ask user */ 368798943Sluigi int c; 368898943Sluigi 368998943Sluigi printf("Are you sure? [yn] "); 369098943Sluigi fflush(stdout); 369198943Sluigi do { 369298943Sluigi c = toupper(getc(stdin)); 369398943Sluigi while (c != '\n' && getc(stdin) != '\n') 369498943Sluigi if (feof(stdin)) 369598943Sluigi return; /* and do not flush */ 369698943Sluigi } while (c != 'Y' && c != 'N'); 369798943Sluigi printf("\n"); 369898943Sluigi if (c == 'N') /* user said no */ 369998943Sluigi return; 370098943Sluigi } 3701170923Smaxim /* `ipfw set N flush` - is the same that `ipfw delete set N` */ 3702187764Sluigi if (co.use_set) { 3703187764Sluigi uint32_t arg = ((co.use_set - 1) & 0xffff) | (1 << 24); 3704170923Smaxim if (do_cmd(IP_FW_DEL, &arg, sizeof(arg)) < 0) 3705170923Smaxim err(EX_UNAVAILABLE, "setsockopt(IP_FW_DEL)"); 3706170923Smaxim } else if (do_cmd(cmd, NULL, 0) < 0) 370798943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_%s_FLUSH)", 3708187764Sluigi co.do_pipe ? "DUMMYNET" : "FW"); 3709187764Sluigi if (!co.do_quiet) 3710187764Sluigi printf("Flushed all %s.\n", co.do_pipe ? "pipes" : "rules"); 371198943Sluigi} 371298943Sluigi 3713117544Sluigi 3714183407Srikstatic void table_list(ipfw_table_entry ent, int need_header); 3715183228Srik 3716117544Sluigi/* 3717130281Sru * This one handles all table-related commands 3718130281Sru * ipfw table N add addr[/masklen] [value] 3719130281Sru * ipfw table N delete addr[/masklen] 3720183407Srik * ipfw table {N | all} flush 3721183407Srik * ipfw table {N | all} list 3722130281Sru */ 3723187767Sluigivoid 3724187767Sluigiipfw_table_handler(int ac, char *av[]) 3725130281Sru{ 3726130281Sru ipfw_table_entry ent; 3727130281Sru int do_add; 3728183407Srik int is_all; 3729183241Srik size_t len; 3730130281Sru char *p; 3731183407Srik uint32_t a; 3732183241Srik uint32_t tables_max; 3733130281Sru 3734183263Skeramida len = sizeof(tables_max); 3735183241Srik if (sysctlbyname("net.inet.ip.fw.tables_max", &tables_max, &len, 3736183241Srik NULL, 0) == -1) { 3737183241Srik#ifdef IPFW_TABLES_MAX 3738183241Srik warn("Warn: Failed to get the max tables number via sysctl. " 3739183241Srik "Using the compiled in defaults. \nThe reason was"); 3740183241Srik tables_max = IPFW_TABLES_MAX; 3741183241Srik#else 3742183241Srik errx(1, "Failed sysctlbyname(\"net.inet.ip.fw.tables_max\")"); 3743183241Srik#endif 3744183241Srik } 3745183241Srik 3746130281Sru ac--; av++; 3747130281Sru if (ac && isdigit(**av)) { 3748130281Sru ent.tbl = atoi(*av); 3749183407Srik is_all = 0; 3750130281Sru ac--; av++; 3751183407Srik } else if (ac && _substrcmp(*av, "all") == 0) { 3752183407Srik ent.tbl = 0; 3753183407Srik is_all = 1; 3754183407Srik ac--; av++; 3755130281Sru } else 3756183407Srik errx(EX_USAGE, "table number or 'all' keyword required"); 3757183241Srik if (ent.tbl >= tables_max) 3758183241Srik errx(EX_USAGE, "The table number exceeds the maximum allowed " 3759183241Srik "value (%d)", tables_max - 1); 3760130281Sru NEED1("table needs command"); 3761183407Srik if (is_all && _substrcmp(*av, "list") != 0 3762183407Srik && _substrcmp(*av, "flush") != 0) 3763183407Srik errx(EX_USAGE, "table number required"); 3764183407Srik 3765140271Sbrooks if (_substrcmp(*av, "add") == 0 || 3766140271Sbrooks _substrcmp(*av, "delete") == 0) { 3767130281Sru do_add = **av == 'a'; 3768130281Sru ac--; av++; 3769130281Sru if (!ac) 3770130281Sru errx(EX_USAGE, "IP address required"); 3771130281Sru p = strchr(*av, '/'); 3772130281Sru if (p) { 3773130281Sru *p++ = '\0'; 3774130281Sru ent.masklen = atoi(p); 3775130281Sru if (ent.masklen > 32) 3776130281Sru errx(EX_DATAERR, "bad width ``%s''", p); 3777130281Sru } else 3778130281Sru ent.masklen = 32; 3779130281Sru if (lookup_host(*av, (struct in_addr *)&ent.addr) != 0) 3780130298Sru errx(EX_NOHOST, "hostname ``%s'' unknown", *av); 3781130281Sru ac--; av++; 3782161424Sjulian if (do_add && ac) { 3783161424Sjulian unsigned int tval; 3784161424Sjulian /* isdigit is a bit of a hack here.. */ 3785161424Sjulian if (strchr(*av, (int)'.') == NULL && isdigit(**av)) { 3786161424Sjulian ent.value = strtoul(*av, NULL, 0); 3787161424Sjulian } else { 3788161424Sjulian if (lookup_host(*av, (struct in_addr *)&tval) == 0) { 3789161424Sjulian /* The value must be stored in host order * 3790161424Sjulian * so that the values < 65k can be distinguished */ 3791161424Sjulian ent.value = ntohl(tval); 3792161424Sjulian } else { 3793161424Sjulian errx(EX_NOHOST, "hostname ``%s'' unknown", *av); 3794161424Sjulian } 3795161424Sjulian } 3796161424Sjulian } else 3797130281Sru ent.value = 0; 3798130281Sru if (do_cmd(do_add ? IP_FW_TABLE_ADD : IP_FW_TABLE_DEL, 3799157335Sjulian &ent, sizeof(ent)) < 0) { 3800155639Sjulian /* If running silent, don't bomb out on these errors. */ 3801187764Sluigi if (!(co.do_quiet && (errno == (do_add ? EEXIST : ESRCH)))) 3802155639Sjulian err(EX_OSERR, "setsockopt(IP_FW_TABLE_%s)", 3803155639Sjulian do_add ? "ADD" : "DEL"); 3804155639Sjulian /* In silent mode, react to a failed add by deleting */ 3805157332Sjulian if (do_add) { 3806155639Sjulian do_cmd(IP_FW_TABLE_DEL, &ent, sizeof(ent)); 3807155639Sjulian if (do_cmd(IP_FW_TABLE_ADD, 3808155639Sjulian &ent, sizeof(ent)) < 0) 3809155639Sjulian err(EX_OSERR, 3810155639Sjulian "setsockopt(IP_FW_TABLE_ADD)"); 3811157332Sjulian } 3812157335Sjulian } 3813140271Sbrooks } else if (_substrcmp(*av, "flush") == 0) { 3814183407Srik a = is_all ? tables_max : (ent.tbl + 1); 3815183407Srik do { 3816183407Srik if (do_cmd(IP_FW_TABLE_FLUSH, &ent.tbl, 3817183407Srik sizeof(ent.tbl)) < 0) 3818183407Srik err(EX_OSERR, "setsockopt(IP_FW_TABLE_FLUSH)"); 3819183407Srik } while (++ent.tbl < a); 3820140271Sbrooks } else if (_substrcmp(*av, "list") == 0) { 3821183407Srik a = is_all ? tables_max : (ent.tbl + 1); 3822183407Srik do { 3823183415Srik table_list(ent, is_all); 3824183407Srik } while (++ent.tbl < a); 3825183228Srik } else 3826183228Srik errx(EX_USAGE, "invalid table command %s", *av); 3827183228Srik} 3828183205Srik 3829183228Srikstatic void 3830183407Sriktable_list(ipfw_table_entry ent, int need_header) 3831183228Srik{ 3832183228Srik ipfw_table *tbl; 3833183228Srik socklen_t l; 3834183228Srik uint32_t a; 3835183205Srik 3836183228Srik a = ent.tbl; 3837183228Srik l = sizeof(a); 3838183228Srik if (do_cmd(IP_FW_TABLE_GETSIZE, &a, (uintptr_t)&l) < 0) 3839183228Srik err(EX_OSERR, "getsockopt(IP_FW_TABLE_GETSIZE)"); 3840183228Srik 3841183228Srik /* If a is zero we have nothing to do, the table is empty. */ 3842183228Srik if (a == 0) 3843183228Srik return; 3844183228Srik 3845183228Srik l = sizeof(*tbl) + a * sizeof(ipfw_table_entry); 3846187716Sluigi tbl = safe_calloc(1, l); 3847183228Srik tbl->tbl = ent.tbl; 3848183228Srik if (do_cmd(IP_FW_TABLE_LIST, tbl, (uintptr_t)&l) < 0) 3849183228Srik err(EX_OSERR, "getsockopt(IP_FW_TABLE_LIST)"); 3850183407Srik if (tbl->cnt && need_header) 3851183407Srik printf("---table(%d)---\n", tbl->tbl); 3852183228Srik for (a = 0; a < tbl->cnt; a++) { 3853183228Srik unsigned int tval; 3854183228Srik tval = tbl->ent[a].value; 3855187764Sluigi if (co.do_value_as_ip) { 3856183228Srik char tbuf[128]; 3857183228Srik strncpy(tbuf, inet_ntoa(*(struct in_addr *) 3858161456Sjulian &tbl->ent[a].addr), 127); 3859183228Srik /* inet_ntoa expects network order */ 3860183228Srik tval = htonl(tval); 3861183228Srik printf("%s/%u %s\n", tbuf, tbl->ent[a].masklen, 3862183228Srik inet_ntoa(*(struct in_addr *)&tval)); 3863183228Srik } else { 3864183228Srik printf("%s/%u %u\n", 3865183228Srik inet_ntoa(*(struct in_addr *)&tbl->ent[a].addr), 3866183228Srik tbl->ent[a].masklen, tval); 3867130281Sru } 3868183228Srik } 3869183228Srik free(tbl); 3870130281Sru} 3871