ipfw2.c revision 169139
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 169139 2007-04-30 17:39:30Z maxim $ 2198943Sluigi */ 2298943Sluigi 2398943Sluigi#include <sys/param.h> 2498943Sluigi#include <sys/mbuf.h> 2598943Sluigi#include <sys/socket.h> 2698943Sluigi#include <sys/sockio.h> 2798943Sluigi#include <sys/sysctl.h> 2898943Sluigi#include <sys/time.h> 2998943Sluigi#include <sys/wait.h> 30136071Sgreen#include <sys/queue.h> 3198943Sluigi 3298943Sluigi#include <ctype.h> 3398943Sluigi#include <err.h> 3498943Sluigi#include <errno.h> 3598943Sluigi#include <grp.h> 3698943Sluigi#include <limits.h> 3798943Sluigi#include <netdb.h> 3898943Sluigi#include <pwd.h> 3998943Sluigi#include <signal.h> 4098943Sluigi#include <stdio.h> 4198943Sluigi#include <stdlib.h> 4298943Sluigi#include <stdarg.h> 4398943Sluigi#include <string.h> 44117469Sluigi#include <timeconv.h> /* XXX do we need this ? */ 4598943Sluigi#include <unistd.h> 4698943Sluigi#include <sysexits.h> 47136071Sgreen#include <unistd.h> 48136071Sgreen#include <fcntl.h> 4998943Sluigi 5098943Sluigi#include <net/if.h> 51165648Spiso#include <net/if_dl.h> 52136071Sgreen#include <net/pfvar.h> 53145246Sbrooks#include <net/route.h> /* def. of struct route */ 5498943Sluigi#include <netinet/in.h> 5598943Sluigi#include <netinet/in_systm.h> 5698943Sluigi#include <netinet/ip.h> 5798943Sluigi#include <netinet/ip_icmp.h> 58145246Sbrooks#include <netinet/icmp6.h> 5998943Sluigi#include <netinet/ip_fw.h> 6098943Sluigi#include <netinet/ip_dummynet.h> 6198943Sluigi#include <netinet/tcp.h> 6298943Sluigi#include <arpa/inet.h> 63165648Spiso#include <alias.h> 6498943Sluigi 65117328Sluigiint 6698943Sluigi do_resolv, /* Would try to resolve all */ 6798943Sluigi do_time, /* Show time stamps */ 6898943Sluigi do_quiet, /* Be quiet in add and flush */ 6998943Sluigi do_pipe, /* this cmd refers to a pipe */ 70165648Spiso do_nat, /* Nat configuration. */ 7198943Sluigi do_sort, /* field to sort results (0 = no) */ 7298943Sluigi do_dynamic, /* display dynamic rules */ 7398943Sluigi do_expired, /* display expired dynamic rules */ 74102098Sluigi do_compact, /* show rules in compact mode */ 75123804Smaxim do_force, /* do not ask for confirmation */ 76101628Sluigi show_sets, /* display rule sets */ 77117328Sluigi test_only, /* only check syntax */ 78123495Sluigi comment_only, /* only print action and comment */ 7998943Sluigi verbose; 8098943Sluigi 8198943Sluigi#define IP_MASK_ALL 0xffffffff 82130013Scsjp/* 83130013Scsjp * the following macro returns an error message if we run out of 84130013Scsjp * arguments. 85130013Scsjp */ 86130013Scsjp#define NEED1(msg) {if (!ac) errx(EX_USAGE, msg);} 8798943Sluigi 88159636Soleg#define GET_UINT_ARG(arg, min, max, tok, s_x) do { \ 89159636Soleg if (!ac) \ 90159636Soleg errx(EX_USAGE, "%s: missing argument", match_value(s_x, tok)); \ 91159636Soleg if (_substrcmp(*av, "tablearg") == 0) { \ 92159636Soleg arg = IP_FW_TABLEARG; \ 93159636Soleg break; \ 94159636Soleg } \ 95159636Soleg \ 96159636Soleg { \ 97159636Soleg long val; \ 98159636Soleg char *end; \ 99159636Soleg \ 100159636Soleg val = strtol(*av, &end, 10); \ 101159636Soleg \ 102159636Soleg if (!isdigit(**av) || *end != '\0' || (val == 0 && errno == EINVAL)) \ 103159636Soleg errx(EX_DATAERR, "%s: invalid argument: %s", \ 104159636Soleg match_value(s_x, tok), *av); \ 105159636Soleg \ 106159636Soleg if (errno == ERANGE || val < min || val > max) \ 107159636Soleg errx(EX_DATAERR, "%s: argument is out of range (%u..%u): %s", \ 108159636Soleg match_value(s_x, tok), min, max, *av); \ 109159636Soleg \ 110159636Soleg if (val == IP_FW_TABLEARG) \ 111159636Soleg errx(EX_DATAERR, "%s: illegal argument value: %s", \ 112159636Soleg match_value(s_x, tok), *av); \ 113159636Soleg arg = val; \ 114159636Soleg } \ 115158879Soleg} while (0) 116158879Soleg 117159636Soleg#define PRINT_UINT_ARG(str, arg) do { \ 118159636Soleg if (str != NULL) \ 119159636Soleg printf("%s",str); \ 120159636Soleg if (arg == IP_FW_TABLEARG) \ 121159636Soleg printf("tablearg"); \ 122159636Soleg else \ 123159636Soleg printf("%u", (uint32_t)arg); \ 124159636Soleg} while (0) 125159636Soleg 12698943Sluigi/* 127117328Sluigi * _s_x is a structure that stores a string <-> token pairs, used in 128117328Sluigi * various places in the parser. Entries are stored in arrays, 129117328Sluigi * with an entry with s=NULL as terminator. 130117328Sluigi * The search routines are match_token() and match_value(). 131117328Sluigi * Often, an element with x=0 contains an error string. 13298943Sluigi * 13398943Sluigi */ 13498943Sluigistruct _s_x { 135117469Sluigi char const *s; 13698943Sluigi int x; 13798943Sluigi}; 13898943Sluigi 13998943Sluigistatic struct _s_x f_tcpflags[] = { 14098943Sluigi { "syn", TH_SYN }, 14198943Sluigi { "fin", TH_FIN }, 14298943Sluigi { "ack", TH_ACK }, 14398943Sluigi { "psh", TH_PUSH }, 14498943Sluigi { "rst", TH_RST }, 14598943Sluigi { "urg", TH_URG }, 14698943Sluigi { "tcp flag", 0 }, 14798943Sluigi { NULL, 0 } 14898943Sluigi}; 14998943Sluigi 15098943Sluigistatic struct _s_x f_tcpopts[] = { 15198943Sluigi { "mss", IP_FW_TCPOPT_MSS }, 15298943Sluigi { "maxseg", IP_FW_TCPOPT_MSS }, 15398943Sluigi { "window", IP_FW_TCPOPT_WINDOW }, 15498943Sluigi { "sack", IP_FW_TCPOPT_SACK }, 15598943Sluigi { "ts", IP_FW_TCPOPT_TS }, 15698943Sluigi { "timestamp", IP_FW_TCPOPT_TS }, 15798943Sluigi { "cc", IP_FW_TCPOPT_CC }, 15898943Sluigi { "tcp option", 0 }, 15998943Sluigi { NULL, 0 } 16098943Sluigi}; 16198943Sluigi 16298943Sluigi/* 16398943Sluigi * IP options span the range 0 to 255 so we need to remap them 16498943Sluigi * (though in fact only the low 5 bits are significant). 16598943Sluigi */ 16698943Sluigistatic struct _s_x f_ipopts[] = { 16798943Sluigi { "ssrr", IP_FW_IPOPT_SSRR}, 16898943Sluigi { "lsrr", IP_FW_IPOPT_LSRR}, 16998943Sluigi { "rr", IP_FW_IPOPT_RR}, 17098943Sluigi { "ts", IP_FW_IPOPT_TS}, 17198943Sluigi { "ip option", 0 }, 17298943Sluigi { NULL, 0 } 17398943Sluigi}; 17498943Sluigi 17598943Sluigistatic struct _s_x f_iptos[] = { 17698943Sluigi { "lowdelay", IPTOS_LOWDELAY}, 17798943Sluigi { "throughput", IPTOS_THROUGHPUT}, 17898943Sluigi { "reliability", IPTOS_RELIABILITY}, 17998943Sluigi { "mincost", IPTOS_MINCOST}, 18098943Sluigi { "congestion", IPTOS_CE}, 18198943Sluigi { "ecntransport", IPTOS_ECT}, 18298943Sluigi { "ip tos option", 0}, 18398943Sluigi { NULL, 0 } 18498943Sluigi}; 18598943Sluigi 18698943Sluigistatic struct _s_x limit_masks[] = { 18798943Sluigi {"all", DYN_SRC_ADDR|DYN_SRC_PORT|DYN_DST_ADDR|DYN_DST_PORT}, 18898943Sluigi {"src-addr", DYN_SRC_ADDR}, 18998943Sluigi {"src-port", DYN_SRC_PORT}, 19098943Sluigi {"dst-addr", DYN_DST_ADDR}, 19198943Sluigi {"dst-port", DYN_DST_PORT}, 19298943Sluigi {NULL, 0} 19398943Sluigi}; 19498943Sluigi 19598943Sluigi/* 19698943Sluigi * we use IPPROTO_ETHERTYPE as a fake protocol id to call the print routines 19798943Sluigi * This is only used in this code. 19898943Sluigi */ 19998943Sluigi#define IPPROTO_ETHERTYPE 0x1000 20098943Sluigistatic struct _s_x ether_types[] = { 20198943Sluigi /* 20298943Sluigi * Note, we cannot use "-:&/" in the names because they are field 20398943Sluigi * separators in the type specifications. Also, we use s = NULL as 20498943Sluigi * end-delimiter, because a type of 0 can be legal. 20598943Sluigi */ 20698943Sluigi { "ip", 0x0800 }, 20798943Sluigi { "ipv4", 0x0800 }, 20898943Sluigi { "ipv6", 0x86dd }, 20998943Sluigi { "arp", 0x0806 }, 21098943Sluigi { "rarp", 0x8035 }, 21198943Sluigi { "vlan", 0x8100 }, 21298943Sluigi { "loop", 0x9000 }, 21398943Sluigi { "trail", 0x1000 }, 21498943Sluigi { "at", 0x809b }, 21598943Sluigi { "atalk", 0x809b }, 21698943Sluigi { "aarp", 0x80f3 }, 21798943Sluigi { "pppoe_disc", 0x8863 }, 21898943Sluigi { "pppoe_sess", 0x8864 }, 21998943Sluigi { "ipx_8022", 0x00E0 }, 22098943Sluigi { "ipx_8023", 0x0000 }, 22198943Sluigi { "ipx_ii", 0x8137 }, 22298943Sluigi { "ipx_snap", 0x8137 }, 22398943Sluigi { "ipx", 0x8137 }, 22498943Sluigi { "ns", 0x0600 }, 22598943Sluigi { NULL, 0 } 22698943Sluigi}; 22798943Sluigi 22898943Sluigistatic void show_usage(void); 22998943Sluigi 23098943Sluigienum tokens { 23198943Sluigi TOK_NULL=0, 23298943Sluigi 23398943Sluigi TOK_OR, 23498943Sluigi TOK_NOT, 235101641Sluigi TOK_STARTBRACE, 236101641Sluigi TOK_ENDBRACE, 23798943Sluigi 23898943Sluigi TOK_ACCEPT, 23998943Sluigi TOK_COUNT, 24098943Sluigi TOK_PIPE, 24198943Sluigi TOK_QUEUE, 24298943Sluigi TOK_DIVERT, 24398943Sluigi TOK_TEE, 244141351Sglebius TOK_NETGRAPH, 245141351Sglebius TOK_NGTEE, 24698943Sluigi TOK_FORWARD, 24798943Sluigi TOK_SKIPTO, 24898943Sluigi TOK_DENY, 24998943Sluigi TOK_REJECT, 25098943Sluigi TOK_RESET, 25198943Sluigi TOK_UNREACH, 25298943Sluigi TOK_CHECKSTATE, 253165648Spiso TOK_NAT, 25498943Sluigi 255136071Sgreen TOK_ALTQ, 256136071Sgreen TOK_LOG, 257158879Soleg TOK_TAG, 258158879Soleg TOK_UNTAG, 259136071Sgreen 260158879Soleg TOK_TAGGED, 26198943Sluigi TOK_UID, 26298943Sluigi TOK_GID, 263133600Scsjp TOK_JAIL, 26498943Sluigi TOK_IN, 26598943Sluigi TOK_LIMIT, 26698943Sluigi TOK_KEEPSTATE, 26798943Sluigi TOK_LAYER2, 26898943Sluigi TOK_OUT, 269136073Sgreen TOK_DIVERTED, 270136073Sgreen TOK_DIVERTEDLOOPBACK, 271136073Sgreen TOK_DIVERTEDOUTPUT, 27298943Sluigi TOK_XMIT, 27398943Sluigi TOK_RECV, 27498943Sluigi TOK_VIA, 27598943Sluigi TOK_FRAG, 27698943Sluigi TOK_IPOPTS, 27798943Sluigi TOK_IPLEN, 27898943Sluigi TOK_IPID, 27998943Sluigi TOK_IPPRECEDENCE, 28098943Sluigi TOK_IPTOS, 28198943Sluigi TOK_IPTTL, 28298943Sluigi TOK_IPVER, 28398943Sluigi TOK_ESTAB, 28498943Sluigi TOK_SETUP, 285136075Sgreen TOK_TCPDATALEN, 28698943Sluigi TOK_TCPFLAGS, 28798943Sluigi TOK_TCPOPTS, 28898943Sluigi TOK_TCPSEQ, 28998943Sluigi TOK_TCPACK, 29098943Sluigi TOK_TCPWIN, 29198943Sluigi TOK_ICMPTYPES, 292102087Sluigi TOK_MAC, 293102087Sluigi TOK_MACTYPE, 294112250Scjc TOK_VERREVPATH, 295128575Sandre TOK_VERSRCREACH, 296133387Sandre TOK_ANTISPOOF, 297117241Sluigi TOK_IPSEC, 298117469Sluigi TOK_COMMENT, 29998943Sluigi 30098943Sluigi TOK_PLR, 301101978Sluigi TOK_NOERROR, 30298943Sluigi TOK_BUCKETS, 30398943Sluigi TOK_DSTIP, 30498943Sluigi TOK_SRCIP, 30598943Sluigi TOK_DSTPORT, 30698943Sluigi TOK_SRCPORT, 30798943Sluigi TOK_ALL, 30898943Sluigi TOK_MASK, 30998943Sluigi TOK_BW, 31098943Sluigi TOK_DELAY, 31198943Sluigi TOK_RED, 31298943Sluigi TOK_GRED, 31398943Sluigi TOK_DROPTAIL, 31498943Sluigi TOK_PROTO, 31598943Sluigi TOK_WEIGHT, 316165648Spiso TOK_IP, 317165648Spiso TOK_IF, 318165648Spiso TOK_ALOG, 319165648Spiso TOK_DENY_INC, 320165648Spiso TOK_SAME_PORTS, 321165648Spiso TOK_UNREG_ONLY, 322165648Spiso TOK_RESET_ADDR, 323165648Spiso TOK_ALIAS_REV, 324165648Spiso TOK_PROXY_ONLY, 325165648Spiso TOK_REDIR_ADDR, 326165648Spiso TOK_REDIR_PORT, 327165648Spiso TOK_REDIR_PROTO, 328145246Sbrooks 329145246Sbrooks TOK_IPV6, 330145246Sbrooks TOK_FLOWID, 331145246Sbrooks TOK_ICMP6TYPES, 332145246Sbrooks TOK_EXT6HDR, 333145246Sbrooks TOK_DSTIP6, 334145246Sbrooks TOK_SRCIP6, 335146894Smlaier 336146894Smlaier TOK_IPV4, 337149020Sbz TOK_UNREACH6, 338149020Sbz TOK_RESET6, 33998943Sluigi}; 34098943Sluigi 34198943Sluigistruct _s_x dummynet_params[] = { 34298943Sluigi { "plr", TOK_PLR }, 343101978Sluigi { "noerror", TOK_NOERROR }, 34498943Sluigi { "buckets", TOK_BUCKETS }, 34598943Sluigi { "dst-ip", TOK_DSTIP }, 34698943Sluigi { "src-ip", TOK_SRCIP }, 34798943Sluigi { "dst-port", TOK_DSTPORT }, 34898943Sluigi { "src-port", TOK_SRCPORT }, 34998943Sluigi { "proto", TOK_PROTO }, 35098943Sluigi { "weight", TOK_WEIGHT }, 35198943Sluigi { "all", TOK_ALL }, 35298943Sluigi { "mask", TOK_MASK }, 35398943Sluigi { "droptail", TOK_DROPTAIL }, 35498943Sluigi { "red", TOK_RED }, 35598943Sluigi { "gred", TOK_GRED }, 35698943Sluigi { "bw", TOK_BW }, 35798943Sluigi { "bandwidth", TOK_BW }, 35898943Sluigi { "delay", TOK_DELAY }, 35999475Sluigi { "pipe", TOK_PIPE }, 36098943Sluigi { "queue", TOK_QUEUE }, 361145246Sbrooks { "flow-id", TOK_FLOWID}, 362145246Sbrooks { "dst-ipv6", TOK_DSTIP6}, 363145246Sbrooks { "dst-ip6", TOK_DSTIP6}, 364145246Sbrooks { "src-ipv6", TOK_SRCIP6}, 365145246Sbrooks { "src-ip6", TOK_SRCIP6}, 36698943Sluigi { "dummynet-params", TOK_NULL }, 367117328Sluigi { NULL, 0 } /* terminator */ 36898943Sluigi}; 36998943Sluigi 370165648Spisostruct _s_x nat_params[] = { 371165648Spiso { "ip", TOK_IP }, 372165648Spiso { "if", TOK_IF }, 373165648Spiso { "log", TOK_ALOG }, 374165648Spiso { "deny_in", TOK_DENY_INC }, 375165648Spiso { "same_ports", TOK_SAME_PORTS }, 376165648Spiso { "unreg_only", TOK_UNREG_ONLY }, 377165648Spiso { "reset", TOK_RESET_ADDR }, 378165648Spiso { "reverse", TOK_ALIAS_REV }, 379165648Spiso { "proxy_only", TOK_PROXY_ONLY }, 380165648Spiso { "redirect_addr", TOK_REDIR_ADDR }, 381165648Spiso { "redirect_port", TOK_REDIR_PORT }, 382165648Spiso { "redirect_proto", TOK_REDIR_PROTO }, 383165648Spiso { NULL, 0 } /* terminator */ 384165648Spiso}; 385165648Spiso 38698943Sluigistruct _s_x rule_actions[] = { 38798943Sluigi { "accept", TOK_ACCEPT }, 38898943Sluigi { "pass", TOK_ACCEPT }, 38998943Sluigi { "allow", TOK_ACCEPT }, 39098943Sluigi { "permit", TOK_ACCEPT }, 39198943Sluigi { "count", TOK_COUNT }, 39298943Sluigi { "pipe", TOK_PIPE }, 39398943Sluigi { "queue", TOK_QUEUE }, 39498943Sluigi { "divert", TOK_DIVERT }, 39598943Sluigi { "tee", TOK_TEE }, 396141351Sglebius { "netgraph", TOK_NETGRAPH }, 397141351Sglebius { "ngtee", TOK_NGTEE }, 39898943Sluigi { "fwd", TOK_FORWARD }, 39998943Sluigi { "forward", TOK_FORWARD }, 40098943Sluigi { "skipto", TOK_SKIPTO }, 40198943Sluigi { "deny", TOK_DENY }, 40298943Sluigi { "drop", TOK_DENY }, 40398943Sluigi { "reject", TOK_REJECT }, 404149020Sbz { "reset6", TOK_RESET6 }, 40598943Sluigi { "reset", TOK_RESET }, 406149020Sbz { "unreach6", TOK_UNREACH6 }, 40799475Sluigi { "unreach", TOK_UNREACH }, 40898943Sluigi { "check-state", TOK_CHECKSTATE }, 409117469Sluigi { "//", TOK_COMMENT }, 410165648Spiso { "nat", TOK_NAT }, 411117328Sluigi { NULL, 0 } /* terminator */ 41298943Sluigi}; 41398943Sluigi 414136071Sgreenstruct _s_x rule_action_params[] = { 415136071Sgreen { "altq", TOK_ALTQ }, 416136071Sgreen { "log", TOK_LOG }, 417158879Soleg { "tag", TOK_TAG }, 418158879Soleg { "untag", TOK_UNTAG }, 419136071Sgreen { NULL, 0 } /* terminator */ 420136071Sgreen}; 421136071Sgreen 42298943Sluigistruct _s_x rule_options[] = { 423158879Soleg { "tagged", TOK_TAGGED }, 42498943Sluigi { "uid", TOK_UID }, 42598943Sluigi { "gid", TOK_GID }, 426133600Scsjp { "jail", TOK_JAIL }, 42798943Sluigi { "in", TOK_IN }, 42898943Sluigi { "limit", TOK_LIMIT }, 42998943Sluigi { "keep-state", TOK_KEEPSTATE }, 43098943Sluigi { "bridged", TOK_LAYER2 }, 43198943Sluigi { "layer2", TOK_LAYER2 }, 43298943Sluigi { "out", TOK_OUT }, 433136073Sgreen { "diverted", TOK_DIVERTED }, 434136073Sgreen { "diverted-loopback", TOK_DIVERTEDLOOPBACK }, 435136073Sgreen { "diverted-output", TOK_DIVERTEDOUTPUT }, 43698943Sluigi { "xmit", TOK_XMIT }, 43798943Sluigi { "recv", TOK_RECV }, 43898943Sluigi { "via", TOK_VIA }, 43998943Sluigi { "fragment", TOK_FRAG }, 44098943Sluigi { "frag", TOK_FRAG }, 44198943Sluigi { "ipoptions", TOK_IPOPTS }, 44298943Sluigi { "ipopts", TOK_IPOPTS }, 44398943Sluigi { "iplen", TOK_IPLEN }, 44498943Sluigi { "ipid", TOK_IPID }, 44598943Sluigi { "ipprecedence", TOK_IPPRECEDENCE }, 44698943Sluigi { "iptos", TOK_IPTOS }, 44798943Sluigi { "ipttl", TOK_IPTTL }, 44898943Sluigi { "ipversion", TOK_IPVER }, 44998943Sluigi { "ipver", TOK_IPVER }, 45098943Sluigi { "estab", TOK_ESTAB }, 45198943Sluigi { "established", TOK_ESTAB }, 45298943Sluigi { "setup", TOK_SETUP }, 453136075Sgreen { "tcpdatalen", TOK_TCPDATALEN }, 45498943Sluigi { "tcpflags", TOK_TCPFLAGS }, 45598943Sluigi { "tcpflgs", TOK_TCPFLAGS }, 45698943Sluigi { "tcpoptions", TOK_TCPOPTS }, 45798943Sluigi { "tcpopts", TOK_TCPOPTS }, 45898943Sluigi { "tcpseq", TOK_TCPSEQ }, 45998943Sluigi { "tcpack", TOK_TCPACK }, 46098943Sluigi { "tcpwin", TOK_TCPWIN }, 46199909Sluigi { "icmptype", TOK_ICMPTYPES }, 46298943Sluigi { "icmptypes", TOK_ICMPTYPES }, 463102087Sluigi { "dst-ip", TOK_DSTIP }, 464102087Sluigi { "src-ip", TOK_SRCIP }, 465102087Sluigi { "dst-port", TOK_DSTPORT }, 466102087Sluigi { "src-port", TOK_SRCPORT }, 467102087Sluigi { "proto", TOK_PROTO }, 468102087Sluigi { "MAC", TOK_MAC }, 469102087Sluigi { "mac", TOK_MAC }, 470102087Sluigi { "mac-type", TOK_MACTYPE }, 471112250Scjc { "verrevpath", TOK_VERREVPATH }, 472128575Sandre { "versrcreach", TOK_VERSRCREACH }, 473133387Sandre { "antispoof", TOK_ANTISPOOF }, 474117241Sluigi { "ipsec", TOK_IPSEC }, 475145246Sbrooks { "icmp6type", TOK_ICMP6TYPES }, 476145246Sbrooks { "icmp6types", TOK_ICMP6TYPES }, 477145246Sbrooks { "ext6hdr", TOK_EXT6HDR}, 478145246Sbrooks { "flow-id", TOK_FLOWID}, 479145246Sbrooks { "ipv6", TOK_IPV6}, 480145246Sbrooks { "ip6", TOK_IPV6}, 481146894Smlaier { "ipv4", TOK_IPV4}, 482146894Smlaier { "ip4", TOK_IPV4}, 483145246Sbrooks { "dst-ipv6", TOK_DSTIP6}, 484145246Sbrooks { "dst-ip6", TOK_DSTIP6}, 485145246Sbrooks { "src-ipv6", TOK_SRCIP6}, 486145246Sbrooks { "src-ip6", TOK_SRCIP6}, 487117469Sluigi { "//", TOK_COMMENT }, 48898943Sluigi 48998943Sluigi { "not", TOK_NOT }, /* pseudo option */ 49098943Sluigi { "!", /* escape ? */ TOK_NOT }, /* pseudo option */ 49198943Sluigi { "or", TOK_OR }, /* pseudo option */ 49298943Sluigi { "|", /* escape */ TOK_OR }, /* pseudo option */ 493101641Sluigi { "{", TOK_STARTBRACE }, /* pseudo option */ 494101641Sluigi { "(", TOK_STARTBRACE }, /* pseudo option */ 495101641Sluigi { "}", TOK_ENDBRACE }, /* pseudo option */ 496101641Sluigi { ")", TOK_ENDBRACE }, /* pseudo option */ 497117328Sluigi { NULL, 0 } /* terminator */ 49898943Sluigi}; 49998943Sluigi 500153374Sglebius#define TABLEARG "tablearg" 501153374Sglebius 502117328Sluigistatic __inline uint64_t 503117328Sluigialign_uint64(uint64_t *pll) { 504117328Sluigi uint64_t ret; 505115793Sticso 506115793Sticso bcopy (pll, &ret, sizeof(ret)); 507115793Sticso return ret; 508129389Sstefanf} 509115793Sticso 510117328Sluigi/* 511117328Sluigi * conditionally runs the command. 512117328Sluigi */ 513117469Sluigistatic int 514119740Stmmdo_cmd(int optname, void *optval, uintptr_t optlen) 515117328Sluigi{ 516117328Sluigi static int s = -1; /* the socket */ 517117328Sluigi int i; 518117577Sluigi 519117328Sluigi if (test_only) 520117328Sluigi return 0; 521117328Sluigi 522117328Sluigi if (s == -1) 523117328Sluigi s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); 524117328Sluigi if (s < 0) 525117328Sluigi err(EX_UNAVAILABLE, "socket"); 526117328Sluigi 527117328Sluigi if (optname == IP_FW_GET || optname == IP_DUMMYNET_GET || 528130281Sru optname == IP_FW_ADD || optname == IP_FW_TABLE_LIST || 529165648Spiso optname == IP_FW_TABLE_GETSIZE || 530165648Spiso optname == IP_FW_NAT_GET_CONFIG || 531165648Spiso optname == IP_FW_NAT_GET_LOG) 532117328Sluigi i = getsockopt(s, IPPROTO_IP, optname, optval, 533117328Sluigi (socklen_t *)optlen); 534117328Sluigi else 535117328Sluigi i = setsockopt(s, IPPROTO_IP, optname, optval, optlen); 536117328Sluigi return i; 537117328Sluigi} 538117328Sluigi 53998943Sluigi/** 54098943Sluigi * match_token takes a table and a string, returns the value associated 541117328Sluigi * with the string (-1 in case of failure). 54298943Sluigi */ 54398943Sluigistatic int 54498943Sluigimatch_token(struct _s_x *table, char *string) 54598943Sluigi{ 54698943Sluigi struct _s_x *pt; 547117469Sluigi uint i = strlen(string); 54898943Sluigi 54998943Sluigi for (pt = table ; i && pt->s != NULL ; pt++) 55098943Sluigi if (strlen(pt->s) == i && !bcmp(string, pt->s, i)) 55198943Sluigi return pt->x; 55298943Sluigi return -1; 553129389Sstefanf} 55498943Sluigi 555117328Sluigi/** 556117328Sluigi * match_value takes a table and a value, returns the string associated 557117328Sluigi * with the value (NULL in case of failure). 558117328Sluigi */ 559117469Sluigistatic char const * 560117469Sluigimatch_value(struct _s_x *p, int value) 56198943Sluigi{ 56298943Sluigi for (; p->s != NULL; p++) 56398943Sluigi if (p->x == value) 56498943Sluigi return p->s; 56598943Sluigi return NULL; 56698943Sluigi} 56798943Sluigi 56898943Sluigi/* 569140271Sbrooks * _substrcmp takes two strings and returns 1 if they do not match, 570140271Sbrooks * and 0 if they match exactly or the first string is a sub-string 571140271Sbrooks * of the second. A warning is printed to stderr in the case that the 572140271Sbrooks * first string is a sub-string of the second. 573140271Sbrooks * 574140271Sbrooks * This function will be removed in the future through the usual 575140271Sbrooks * deprecation process. 576140271Sbrooks */ 577140271Sbrooksstatic int 578140271Sbrooks_substrcmp(const char *str1, const char* str2) 579140271Sbrooks{ 580140271Sbrooks 581140271Sbrooks if (strncmp(str1, str2, strlen(str1)) != 0) 582140271Sbrooks return 1; 583140271Sbrooks 584140271Sbrooks if (strlen(str1) != strlen(str2)) 585140271Sbrooks warnx("DEPRECATED: '%s' matched '%s' as a sub-string", 586140271Sbrooks str1, str2); 587140271Sbrooks return 0; 588140271Sbrooks} 589140271Sbrooks 590140271Sbrooks/* 591140271Sbrooks * _substrcmp2 takes three strings and returns 1 if the first two do not match, 592140271Sbrooks * and 0 if they match exactly or the second string is a sub-string 593140271Sbrooks * of the first. A warning is printed to stderr in the case that the 594140271Sbrooks * first string does not match the third. 595140271Sbrooks * 596140271Sbrooks * This function exists to warn about the bizzare construction 597140271Sbrooks * strncmp(str, "by", 2) which is used to allow people to use a shotcut 598140271Sbrooks * for "bytes". The problem is that in addition to accepting "by", 599140271Sbrooks * "byt", "byte", and "bytes", it also excepts "by_rabid_dogs" and any 600140271Sbrooks * other string beginning with "by". 601140271Sbrooks * 602140271Sbrooks * This function will be removed in the future through the usual 603140271Sbrooks * deprecation process. 604140271Sbrooks */ 605140271Sbrooksstatic int 606140271Sbrooks_substrcmp2(const char *str1, const char* str2, const char* str3) 607140271Sbrooks{ 608140271Sbrooks 609140271Sbrooks if (strncmp(str1, str2, strlen(str2)) != 0) 610140271Sbrooks return 1; 611140271Sbrooks 612140271Sbrooks if (strcmp(str1, str3) != 0) 613140271Sbrooks warnx("DEPRECATED: '%s' matched '%s'", 614140271Sbrooks str1, str3); 615140271Sbrooks return 0; 616140271Sbrooks} 617140271Sbrooks 618140271Sbrooks/* 61998943Sluigi * prints one port, symbolic or numeric 62098943Sluigi */ 62198943Sluigistatic void 622117328Sluigiprint_port(int proto, uint16_t port) 62398943Sluigi{ 62498943Sluigi 62598943Sluigi if (proto == IPPROTO_ETHERTYPE) { 626117469Sluigi char const *s; 62798943Sluigi 62898943Sluigi if (do_resolv && (s = match_value(ether_types, port)) ) 62998943Sluigi printf("%s", s); 63098943Sluigi else 63198943Sluigi printf("0x%04x", port); 63298943Sluigi } else { 63398943Sluigi struct servent *se = NULL; 63498943Sluigi if (do_resolv) { 63598943Sluigi struct protoent *pe = getprotobynumber(proto); 63698943Sluigi 63798943Sluigi se = getservbyport(htons(port), pe ? pe->p_name : NULL); 63898943Sluigi } 63998943Sluigi if (se) 64098943Sluigi printf("%s", se->s_name); 64198943Sluigi else 64298943Sluigi printf("%d", port); 64398943Sluigi } 64498943Sluigi} 64598943Sluigi 646117328Sluigistruct _s_x _port_name[] = { 647117328Sluigi {"dst-port", O_IP_DSTPORT}, 648117328Sluigi {"src-port", O_IP_SRCPORT}, 649117328Sluigi {"ipid", O_IPID}, 650117328Sluigi {"iplen", O_IPLEN}, 651117328Sluigi {"ipttl", O_IPTTL}, 652117328Sluigi {"mac-type", O_MAC_TYPE}, 653136075Sgreen {"tcpdatalen", O_TCPDATALEN}, 654158879Soleg {"tagged", O_TAGGED}, 655117328Sluigi {NULL, 0} 656117328Sluigi}; 657117328Sluigi 65898943Sluigi/* 659117328Sluigi * Print the values in a list 16-bit items of the types above. 66098943Sluigi * XXX todo: add support for mask. 66198943Sluigi */ 66298943Sluigistatic void 663102087Sluigiprint_newports(ipfw_insn_u16 *cmd, int proto, int opcode) 66498943Sluigi{ 665117328Sluigi uint16_t *p = cmd->ports; 66698943Sluigi int i; 667117469Sluigi char const *sep; 66898943Sluigi 66998943Sluigi if (cmd->o.len & F_NOT) 67098943Sluigi printf(" not"); 671116690Sluigi if (opcode != 0) { 672117328Sluigi sep = match_value(_port_name, opcode); 673117328Sluigi if (sep == NULL) 674116690Sluigi sep = "???"; 675116690Sluigi printf (" %s", sep); 676116690Sluigi } 677116690Sluigi sep = " "; 67898943Sluigi for (i = F_LEN((ipfw_insn *)cmd) - 1; i > 0; i--, p += 2) { 67998943Sluigi printf(sep); 68098943Sluigi print_port(proto, p[0]); 68198943Sluigi if (p[0] != p[1]) { 68298943Sluigi printf("-"); 68398943Sluigi print_port(proto, p[1]); 68498943Sluigi } 68598943Sluigi sep = ","; 68698943Sluigi } 68798943Sluigi} 68898943Sluigi 68998943Sluigi/* 69098943Sluigi * Like strtol, but also translates service names into port numbers 69198943Sluigi * for some protocols. 69298943Sluigi * In particular: 69398943Sluigi * proto == -1 disables the protocol check; 69498943Sluigi * proto == IPPROTO_ETHERTYPE looks up an internal table 69598943Sluigi * proto == <some value in /etc/protocols> matches the values there. 696101628Sluigi * Returns *end == s in case the parameter is not found. 69798943Sluigi */ 69898943Sluigistatic int 69998943Sluigistrtoport(char *s, char **end, int base, int proto) 70098943Sluigi{ 701101628Sluigi char *p, *buf; 702101628Sluigi char *s1; 70398943Sluigi int i; 70498943Sluigi 705101628Sluigi *end = s; /* default - not found */ 706117577Sluigi if (*s == '\0') 707101628Sluigi return 0; /* not found */ 708106505Smaxim 70998943Sluigi if (isdigit(*s)) 71098943Sluigi return strtol(s, end, base); 71198943Sluigi 71298943Sluigi /* 713101628Sluigi * find separator. '\\' escapes the next char. 71498943Sluigi */ 715101628Sluigi for (s1 = s; *s1 && (isalnum(*s1) || *s1 == '\\') ; s1++) 716101628Sluigi if (*s1 == '\\' && s1[1] != '\0') 717101628Sluigi s1++; 71898943Sluigi 719101628Sluigi buf = malloc(s1 - s + 1); 720101628Sluigi if (buf == NULL) 721101628Sluigi return 0; 722101628Sluigi 723101628Sluigi /* 724101628Sluigi * copy into a buffer skipping backslashes 725101628Sluigi */ 726101628Sluigi for (p = s, i = 0; p != s1 ; p++) 727117577Sluigi if (*p != '\\') 728101628Sluigi buf[i++] = *p; 729101628Sluigi buf[i++] = '\0'; 730101628Sluigi 73198943Sluigi if (proto == IPPROTO_ETHERTYPE) { 732101628Sluigi i = match_token(ether_types, buf); 733101628Sluigi free(buf); 734101628Sluigi if (i != -1) { /* found */ 73598943Sluigi *end = s1; 73698943Sluigi return i; 73798943Sluigi } 73898943Sluigi } else { 73998943Sluigi struct protoent *pe = NULL; 74098943Sluigi struct servent *se; 74198943Sluigi 74298943Sluigi if (proto != 0) 74398943Sluigi pe = getprotobynumber(proto); 74498943Sluigi setservent(1); 745101628Sluigi se = getservbyname(buf, pe ? pe->p_name : NULL); 746101628Sluigi free(buf); 74798943Sluigi if (se != NULL) { 74898943Sluigi *end = s1; 74998943Sluigi return ntohs(se->s_port); 75098943Sluigi } 75198943Sluigi } 752101628Sluigi return 0; /* not found */ 75398943Sluigi} 75498943Sluigi 75598943Sluigi/* 756136071Sgreen * Map between current altq queue id numbers and names. 757136071Sgreen */ 758136071Sgreenstatic int altq_fetched = 0; 759136071Sgreenstatic TAILQ_HEAD(, pf_altq) altq_entries = 760136071Sgreen TAILQ_HEAD_INITIALIZER(altq_entries); 761136071Sgreen 762136071Sgreenstatic void 763136071Sgreenaltq_set_enabled(int enabled) 764136071Sgreen{ 765136071Sgreen int pffd; 766136071Sgreen 767136071Sgreen pffd = open("/dev/pf", O_RDWR); 768136071Sgreen if (pffd == -1) 769136071Sgreen err(EX_UNAVAILABLE, 770136071Sgreen "altq support opening pf(4) control device"); 771136071Sgreen if (enabled) { 772136071Sgreen if (ioctl(pffd, DIOCSTARTALTQ) != 0 && errno != EEXIST) 773136071Sgreen err(EX_UNAVAILABLE, "enabling altq"); 774136071Sgreen } else { 775136071Sgreen if (ioctl(pffd, DIOCSTOPALTQ) != 0 && errno != ENOENT) 776136071Sgreen err(EX_UNAVAILABLE, "disabling altq"); 777136071Sgreen } 778136071Sgreen close(pffd); 779136071Sgreen} 780136071Sgreen 781136071Sgreenstatic void 782136071Sgreenaltq_fetch() 783136071Sgreen{ 784136071Sgreen struct pfioc_altq pfioc; 785136071Sgreen struct pf_altq *altq; 786136071Sgreen int pffd, mnr; 787136071Sgreen 788136071Sgreen if (altq_fetched) 789136071Sgreen return; 790136071Sgreen altq_fetched = 1; 791136071Sgreen pffd = open("/dev/pf", O_RDONLY); 792136071Sgreen if (pffd == -1) { 793136071Sgreen warn("altq support opening pf(4) control device"); 794136071Sgreen return; 795136071Sgreen } 796136071Sgreen bzero(&pfioc, sizeof(pfioc)); 797136071Sgreen if (ioctl(pffd, DIOCGETALTQS, &pfioc) != 0) { 798136071Sgreen warn("altq support getting queue list"); 799136071Sgreen close(pffd); 800136071Sgreen return; 801136071Sgreen } 802136071Sgreen mnr = pfioc.nr; 803136071Sgreen for (pfioc.nr = 0; pfioc.nr < mnr; pfioc.nr++) { 804136071Sgreen if (ioctl(pffd, DIOCGETALTQ, &pfioc) != 0) { 805136071Sgreen if (errno == EBUSY) 806136071Sgreen break; 807136071Sgreen warn("altq support getting queue list"); 808136071Sgreen close(pffd); 809136071Sgreen return; 810136071Sgreen } 811136071Sgreen if (pfioc.altq.qid == 0) 812136071Sgreen continue; 813136071Sgreen altq = malloc(sizeof(*altq)); 814136071Sgreen if (altq == NULL) 815136071Sgreen err(EX_OSERR, "malloc"); 816136071Sgreen *altq = pfioc.altq; 817136071Sgreen TAILQ_INSERT_TAIL(&altq_entries, altq, entries); 818136071Sgreen } 819136071Sgreen close(pffd); 820136071Sgreen} 821136071Sgreen 822136071Sgreenstatic u_int32_t 823136071Sgreenaltq_name_to_qid(const char *name) 824136071Sgreen{ 825136071Sgreen struct pf_altq *altq; 826136071Sgreen 827136071Sgreen altq_fetch(); 828136071Sgreen TAILQ_FOREACH(altq, &altq_entries, entries) 829136071Sgreen if (strcmp(name, altq->qname) == 0) 830136071Sgreen break; 831136071Sgreen if (altq == NULL) 832136071Sgreen errx(EX_DATAERR, "altq has no queue named `%s'", name); 833136071Sgreen return altq->qid; 834136071Sgreen} 835136071Sgreen 836136071Sgreenstatic const char * 837136071Sgreenaltq_qid_to_name(u_int32_t qid) 838136071Sgreen{ 839136071Sgreen struct pf_altq *altq; 840136071Sgreen 841136071Sgreen altq_fetch(); 842136071Sgreen TAILQ_FOREACH(altq, &altq_entries, entries) 843136071Sgreen if (qid == altq->qid) 844136071Sgreen break; 845136071Sgreen if (altq == NULL) 846136071Sgreen return NULL; 847136071Sgreen return altq->qname; 848136071Sgreen} 849136071Sgreen 850136071Sgreenstatic void 851136071Sgreenfill_altq_qid(u_int32_t *qid, const char *av) 852136071Sgreen{ 853136071Sgreen *qid = altq_name_to_qid(av); 854136071Sgreen} 855136071Sgreen 856136071Sgreen/* 857117328Sluigi * Fill the body of the command with the list of port ranges. 85898943Sluigi */ 85998943Sluigistatic int 86098943Sluigifill_newports(ipfw_insn_u16 *cmd, char *av, int proto) 86198943Sluigi{ 862117328Sluigi uint16_t a, b, *p = cmd->ports; 86398943Sluigi int i = 0; 864102087Sluigi char *s = av; 86598943Sluigi 866102087Sluigi while (*s) { 86798943Sluigi a = strtoport(av, &s, 0, proto); 868159636Soleg if (s == av) /* empty or invalid argument */ 869159636Soleg return (0); 870159636Soleg 871159636Soleg switch (*s) { 872159636Soleg case '-': /* a range */ 873159636Soleg av = s + 1; 87498943Sluigi b = strtoport(av, &s, 0, proto); 875159636Soleg /* Reject expressions like '1-abc' or '1-2-3'. */ 876159636Soleg if (s == av || (*s != ',' && *s != '\0')) 877159636Soleg return (0); 87898943Sluigi p[0] = a; 87998943Sluigi p[1] = b; 880159636Soleg break; 881159636Soleg case ',': /* comma separated list */ 882159636Soleg case '\0': 88398943Sluigi p[0] = p[1] = a; 884159636Soleg break; 885159636Soleg default: 886159636Soleg warnx("port list: invalid separator <%c> in <%s>", 887101978Sluigi *s, av); 888159636Soleg return (0); 889159636Soleg } 890159636Soleg 891102087Sluigi i++; 892102087Sluigi p += 2; 893159636Soleg av = s + 1; 89498943Sluigi } 89598943Sluigi if (i > 0) { 896159636Soleg if (i + 1 > F_LEN_MASK) 897102087Sluigi errx(EX_DATAERR, "too many ports/ranges\n"); 898159636Soleg cmd->o.len |= i + 1; /* leave F_NOT and F_OR untouched */ 89998943Sluigi } 900159636Soleg return (i); 90198943Sluigi} 90298943Sluigi 90398943Sluigistatic struct _s_x icmpcodes[] = { 90498943Sluigi { "net", ICMP_UNREACH_NET }, 90598943Sluigi { "host", ICMP_UNREACH_HOST }, 90698943Sluigi { "protocol", ICMP_UNREACH_PROTOCOL }, 90798943Sluigi { "port", ICMP_UNREACH_PORT }, 90898943Sluigi { "needfrag", ICMP_UNREACH_NEEDFRAG }, 90998943Sluigi { "srcfail", ICMP_UNREACH_SRCFAIL }, 91098943Sluigi { "net-unknown", ICMP_UNREACH_NET_UNKNOWN }, 91198943Sluigi { "host-unknown", ICMP_UNREACH_HOST_UNKNOWN }, 91298943Sluigi { "isolated", ICMP_UNREACH_ISOLATED }, 91398943Sluigi { "net-prohib", ICMP_UNREACH_NET_PROHIB }, 91498943Sluigi { "host-prohib", ICMP_UNREACH_HOST_PROHIB }, 91598943Sluigi { "tosnet", ICMP_UNREACH_TOSNET }, 91698943Sluigi { "toshost", ICMP_UNREACH_TOSHOST }, 91798943Sluigi { "filter-prohib", ICMP_UNREACH_FILTER_PROHIB }, 91898943Sluigi { "host-precedence", ICMP_UNREACH_HOST_PRECEDENCE }, 91998943Sluigi { "precedence-cutoff", ICMP_UNREACH_PRECEDENCE_CUTOFF }, 92098943Sluigi { NULL, 0 } 92198943Sluigi}; 92298943Sluigi 92398943Sluigistatic void 92498943Sluigifill_reject_code(u_short *codep, char *str) 92598943Sluigi{ 92698943Sluigi int val; 92798943Sluigi char *s; 92898943Sluigi 92998943Sluigi val = strtoul(str, &s, 0); 93098943Sluigi if (s == str || *s != '\0' || val >= 0x100) 93198943Sluigi val = match_token(icmpcodes, str); 932102087Sluigi if (val < 0) 93398943Sluigi errx(EX_DATAERR, "unknown ICMP unreachable code ``%s''", str); 93498943Sluigi *codep = val; 93598943Sluigi return; 93698943Sluigi} 93798943Sluigi 93898943Sluigistatic void 939117328Sluigiprint_reject_code(uint16_t code) 94098943Sluigi{ 941117469Sluigi char const *s = match_value(icmpcodes, code); 94298943Sluigi 94398943Sluigi if (s != NULL) 94499475Sluigi printf("unreach %s", s); 94598943Sluigi else 94699475Sluigi printf("unreach %u", code); 94798943Sluigi} 94898943Sluigi 949149020Sbzstatic struct _s_x icmp6codes[] = { 950149020Sbz { "no-route", ICMP6_DST_UNREACH_NOROUTE }, 951149020Sbz { "admin-prohib", ICMP6_DST_UNREACH_ADMIN }, 952149020Sbz { "address", ICMP6_DST_UNREACH_ADDR }, 953149020Sbz { "port", ICMP6_DST_UNREACH_NOPORT }, 954149020Sbz { NULL, 0 } 955149020Sbz}; 956149020Sbz 957149020Sbzstatic void 958149020Sbzfill_unreach6_code(u_short *codep, char *str) 959149020Sbz{ 960149020Sbz int val; 961149020Sbz char *s; 962149020Sbz 963149020Sbz val = strtoul(str, &s, 0); 964149020Sbz if (s == str || *s != '\0' || val >= 0x100) 965149020Sbz val = match_token(icmp6codes, str); 966149020Sbz if (val < 0) 967149020Sbz errx(EX_DATAERR, "unknown ICMPv6 unreachable code ``%s''", str); 968149020Sbz *codep = val; 969149020Sbz return; 970149020Sbz} 971149020Sbz 972149020Sbzstatic void 973149020Sbzprint_unreach6_code(uint16_t code) 974149020Sbz{ 975149020Sbz char const *s = match_value(icmp6codes, code); 976149020Sbz 977149020Sbz if (s != NULL) 978149020Sbz printf("unreach6 %s", s); 979149020Sbz else 980149020Sbz printf("unreach6 %u", code); 981149020Sbz} 982149020Sbz 98398943Sluigi/* 98498943Sluigi * Returns the number of bits set (from left) in a contiguous bitmask, 98598943Sluigi * or -1 if the mask is not contiguous. 98698943Sluigi * XXX this needs a proper fix. 98798943Sluigi * This effectively works on masks in big-endian (network) format. 98898943Sluigi * when compiled on little endian architectures. 98998943Sluigi * 99098943Sluigi * First bit is bit 7 of the first byte -- note, for MAC addresses, 99198943Sluigi * the first bit on the wire is bit 0 of the first byte. 99298943Sluigi * len is the max length in bits. 99398943Sluigi */ 99498943Sluigistatic int 995117577Sluigicontigmask(uint8_t *p, int len) 99698943Sluigi{ 99798943Sluigi int i, n; 998117577Sluigi 99998943Sluigi for (i=0; i<len ; i++) 100098943Sluigi if ( (p[i/8] & (1 << (7 - (i%8)))) == 0) /* first bit unset */ 100198943Sluigi break; 100298943Sluigi for (n=i+1; n < len; n++) 100398943Sluigi if ( (p[n/8] & (1 << (7 - (n%8)))) != 0) 100498943Sluigi return -1; /* mask not contiguous */ 100598943Sluigi return i; 100698943Sluigi} 100798943Sluigi 100898943Sluigi/* 100998943Sluigi * print flags set/clear in the two bitmasks passed as parameters. 101098943Sluigi * There is a specialized check for f_tcpflags. 101198943Sluigi */ 101298943Sluigistatic void 1013117469Sluigiprint_flags(char const *name, ipfw_insn *cmd, struct _s_x *list) 101498943Sluigi{ 1015117469Sluigi char const *comma = ""; 101698943Sluigi int i; 1017117577Sluigi uint8_t set = cmd->arg1 & 0xff; 1018117577Sluigi uint8_t clear = (cmd->arg1 >> 8) & 0xff; 101998943Sluigi 102098943Sluigi if (list == f_tcpflags && set == TH_SYN && clear == TH_ACK) { 102198943Sluigi printf(" setup"); 102298943Sluigi return; 102398943Sluigi } 102498943Sluigi 102598943Sluigi printf(" %s ", name); 102698943Sluigi for (i=0; list[i].x != 0; i++) { 102798943Sluigi if (set & list[i].x) { 102898943Sluigi set &= ~list[i].x; 102998943Sluigi printf("%s%s", comma, list[i].s); 103098943Sluigi comma = ","; 103198943Sluigi } 103298943Sluigi if (clear & list[i].x) { 103398943Sluigi clear &= ~list[i].x; 103498943Sluigi printf("%s!%s", comma, list[i].s); 103598943Sluigi comma = ","; 103698943Sluigi } 103798943Sluigi } 103898943Sluigi} 103998943Sluigi 104098943Sluigi/* 104198943Sluigi * Print the ip address contained in a command. 104298943Sluigi */ 104398943Sluigistatic void 1044117469Sluigiprint_ip(ipfw_insn_ip *cmd, char const *s) 104598943Sluigi{ 104698943Sluigi struct hostent *he = NULL; 1047117328Sluigi int len = F_LEN((ipfw_insn *)cmd); 1048117328Sluigi uint32_t *a = ((ipfw_insn_u32 *)cmd)->d; 104998943Sluigi 1050102087Sluigi printf("%s%s ", cmd->o.len & F_NOT ? " not": "", s); 105198943Sluigi 105298943Sluigi if (cmd->o.opcode == O_IP_SRC_ME || cmd->o.opcode == O_IP_DST_ME) { 105398943Sluigi printf("me"); 105498943Sluigi return; 105598943Sluigi } 1056130281Sru if (cmd->o.opcode == O_IP_SRC_LOOKUP || 1057130281Sru cmd->o.opcode == O_IP_DST_LOOKUP) { 1058130281Sru printf("table(%u", ((ipfw_insn *)cmd)->arg1); 1059130281Sru if (len == F_INSN_SIZE(ipfw_insn_u32)) 1060130281Sru printf(",%u", *a); 1061130281Sru printf(")"); 1062130281Sru return; 1063130281Sru } 106498943Sluigi if (cmd->o.opcode == O_IP_SRC_SET || cmd->o.opcode == O_IP_DST_SET) { 1065117328Sluigi uint32_t x, *map = (uint32_t *)&(cmd->mask); 1066116716Sluigi int i, j; 106798943Sluigi char comma = '{'; 106898943Sluigi 106998943Sluigi x = cmd->o.arg1 - 1; 107098943Sluigi x = htonl( ~x ); 107198943Sluigi cmd->addr.s_addr = htonl(cmd->addr.s_addr); 107298943Sluigi printf("%s/%d", inet_ntoa(cmd->addr), 1073117577Sluigi contigmask((uint8_t *)&x, 32)); 107498943Sluigi x = cmd->addr.s_addr = htonl(cmd->addr.s_addr); 107598943Sluigi x &= 0xff; /* base */ 1076116716Sluigi /* 1077116716Sluigi * Print bits and ranges. 1078116716Sluigi * Locate first bit set (i), then locate first bit unset (j). 1079116716Sluigi * If we have 3+ consecutive bits set, then print them as a 1080116716Sluigi * range, otherwise only print the initial bit and rescan. 1081116716Sluigi */ 108298943Sluigi for (i=0; i < cmd->o.arg1; i++) 1083117328Sluigi if (map[i/32] & (1<<(i & 31))) { 1084116716Sluigi for (j=i+1; j < cmd->o.arg1; j++) 1085117328Sluigi if (!(map[ j/32] & (1<<(j & 31)))) 1086116716Sluigi break; 108798943Sluigi printf("%c%d", comma, i+x); 1088116716Sluigi if (j>i+2) { /* range has at least 3 elements */ 1089116716Sluigi printf("-%d", j-1+x); 1090116716Sluigi i = j-1; 1091116716Sluigi } 109298943Sluigi comma = ','; 109398943Sluigi } 109498943Sluigi printf("}"); 109598943Sluigi return; 109698943Sluigi } 1097117328Sluigi /* 1098117328Sluigi * len == 2 indicates a single IP, whereas lists of 1 or more 1099117328Sluigi * addr/mask pairs have len = (2n+1). We convert len to n so we 1100117328Sluigi * use that to count the number of entries. 1101117328Sluigi */ 1102117328Sluigi for (len = len / 2; len > 0; len--, a += 2) { 1103117328Sluigi int mb = /* mask length */ 1104117328Sluigi (cmd->o.opcode == O_IP_SRC || cmd->o.opcode == O_IP_DST) ? 1105117577Sluigi 32 : contigmask((uint8_t *)&(a[1]), 32); 110698943Sluigi if (mb == 32 && do_resolv) 1107117328Sluigi he = gethostbyaddr((char *)&(a[0]), sizeof(u_long), AF_INET); 110898943Sluigi if (he != NULL) /* resolved to name */ 110998943Sluigi printf("%s", he->h_name); 111098943Sluigi else if (mb == 0) /* any */ 111198943Sluigi printf("any"); 111298943Sluigi else { /* numeric IP followed by some kind of mask */ 1113117328Sluigi printf("%s", inet_ntoa( *((struct in_addr *)&a[0]) ) ); 111498943Sluigi if (mb < 0) 1115117328Sluigi printf(":%s", inet_ntoa( *((struct in_addr *)&a[1]) ) ); 111698943Sluigi else if (mb < 32) 111798943Sluigi printf("/%d", mb); 111898943Sluigi } 1119117328Sluigi if (len > 1) 1120117328Sluigi printf(","); 1121117328Sluigi } 112298943Sluigi} 112398943Sluigi 112498943Sluigi/* 112598943Sluigi * prints a MAC address/mask pair 112698943Sluigi */ 112798943Sluigistatic void 1128117577Sluigiprint_mac(uint8_t *addr, uint8_t *mask) 112998943Sluigi{ 113098943Sluigi int l = contigmask(mask, 48); 113198943Sluigi 113298943Sluigi if (l == 0) 113398943Sluigi printf(" any"); 113498943Sluigi else { 113598943Sluigi printf(" %02x:%02x:%02x:%02x:%02x:%02x", 113698943Sluigi addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 113798943Sluigi if (l == -1) 113898943Sluigi printf("&%02x:%02x:%02x:%02x:%02x:%02x", 113998943Sluigi mask[0], mask[1], mask[2], 114098943Sluigi mask[3], mask[4], mask[5]); 114198943Sluigi else if (l < 48) 114298943Sluigi printf("/%d", l); 114398943Sluigi } 114498943Sluigi} 114598943Sluigi 114699475Sluigistatic void 114799475Sluigifill_icmptypes(ipfw_insn_u32 *cmd, char *av) 114899475Sluigi{ 1149117328Sluigi uint8_t type; 115098943Sluigi 115199475Sluigi cmd->d[0] = 0; 115299475Sluigi while (*av) { 115399475Sluigi if (*av == ',') 115499475Sluigi av++; 115599475Sluigi 115699475Sluigi type = strtoul(av, &av, 0); 115799475Sluigi 115899475Sluigi if (*av != ',' && *av != '\0') 115999475Sluigi errx(EX_DATAERR, "invalid ICMP type"); 116099475Sluigi 116199475Sluigi if (type > 31) 116299475Sluigi errx(EX_DATAERR, "ICMP type out of range"); 116399475Sluigi 116499475Sluigi cmd->d[0] |= 1 << type; 116599475Sluigi } 116699475Sluigi cmd->o.opcode = O_ICMPTYPE; 116799475Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 116899475Sluigi} 116999475Sluigi 117099475Sluigistatic void 117199475Sluigiprint_icmptypes(ipfw_insn_u32 *cmd) 117299475Sluigi{ 117399475Sluigi int i; 117499475Sluigi char sep= ' '; 117599475Sluigi 117699475Sluigi printf(" icmptypes"); 117799475Sluigi for (i = 0; i < 32; i++) { 117899475Sluigi if ( (cmd->d[0] & (1 << (i))) == 0) 117999475Sluigi continue; 118099475Sluigi printf("%c%d", sep, i); 118199475Sluigi sep = ','; 118299475Sluigi } 118399475Sluigi} 118499475Sluigi 1185145246Sbrooks/* 1186145246Sbrooks * Print the ip address contained in a command. 1187145246Sbrooks */ 1188145246Sbrooksstatic void 1189145246Sbrooksprint_ip6(ipfw_insn_ip6 *cmd, char const *s) 1190145246Sbrooks{ 1191145246Sbrooks struct hostent *he = NULL; 1192145246Sbrooks int len = F_LEN((ipfw_insn *) cmd) - 1; 1193145246Sbrooks struct in6_addr *a = &(cmd->addr6); 1194145246Sbrooks char trad[255]; 1195145246Sbrooks 1196145246Sbrooks printf("%s%s ", cmd->o.len & F_NOT ? " not": "", s); 1197145246Sbrooks 1198145246Sbrooks if (cmd->o.opcode == O_IP6_SRC_ME || cmd->o.opcode == O_IP6_DST_ME) { 1199145246Sbrooks printf("me6"); 1200145246Sbrooks return; 1201145246Sbrooks } 1202145246Sbrooks if (cmd->o.opcode == O_IP6) { 1203152923Sume printf(" ip6"); 1204145246Sbrooks return; 1205145246Sbrooks } 1206145246Sbrooks 1207145246Sbrooks /* 1208145246Sbrooks * len == 4 indicates a single IP, whereas lists of 1 or more 1209145246Sbrooks * addr/mask pairs have len = (2n+1). We convert len to n so we 1210145246Sbrooks * use that to count the number of entries. 1211145246Sbrooks */ 1212145246Sbrooks 1213145246Sbrooks for (len = len / 4; len > 0; len -= 2, a += 2) { 1214145246Sbrooks int mb = /* mask length */ 1215145246Sbrooks (cmd->o.opcode == O_IP6_SRC || cmd->o.opcode == O_IP6_DST) ? 1216145246Sbrooks 128 : contigmask((uint8_t *)&(a[1]), 128); 1217145246Sbrooks 1218145246Sbrooks if (mb == 128 && do_resolv) 1219145246Sbrooks he = gethostbyaddr((char *)a, sizeof(*a), AF_INET6); 1220145246Sbrooks if (he != NULL) /* resolved to name */ 1221145246Sbrooks printf("%s", he->h_name); 1222145246Sbrooks else if (mb == 0) /* any */ 1223145246Sbrooks printf("any"); 1224145246Sbrooks else { /* numeric IP followed by some kind of mask */ 1225145246Sbrooks if (inet_ntop(AF_INET6, a, trad, sizeof( trad ) ) == NULL) 1226145246Sbrooks printf("Error ntop in print_ip6\n"); 1227145246Sbrooks printf("%s", trad ); 1228145246Sbrooks if (mb < 0) /* XXX not really legal... */ 1229145246Sbrooks printf(":%s", 1230145246Sbrooks inet_ntop(AF_INET6, &a[1], trad, sizeof(trad))); 1231145246Sbrooks else if (mb < 128) 1232145246Sbrooks printf("/%d", mb); 1233145246Sbrooks } 1234145246Sbrooks if (len > 2) 1235145246Sbrooks printf(","); 1236145246Sbrooks } 1237145246Sbrooks} 1238145246Sbrooks 1239145246Sbrooksstatic void 1240145246Sbrooksfill_icmp6types(ipfw_insn_icmp6 *cmd, char *av) 1241145246Sbrooks{ 1242145246Sbrooks uint8_t type; 1243145246Sbrooks 1244162344Sjhay bzero(cmd, sizeof(*cmd)); 1245145246Sbrooks while (*av) { 1246145246Sbrooks if (*av == ',') 1247145246Sbrooks av++; 1248145246Sbrooks type = strtoul(av, &av, 0); 1249145246Sbrooks if (*av != ',' && *av != '\0') 1250145246Sbrooks errx(EX_DATAERR, "invalid ICMP6 type"); 1251145246Sbrooks /* 1252145246Sbrooks * XXX: shouldn't this be 0xFF? I can't see any reason why 1253145246Sbrooks * we shouldn't be able to filter all possiable values 1254145246Sbrooks * regardless of the ability of the rest of the kernel to do 1255145246Sbrooks * anything useful with them. 1256145246Sbrooks */ 1257145246Sbrooks if (type > ICMP6_MAXTYPE) 1258145246Sbrooks errx(EX_DATAERR, "ICMP6 type out of range"); 1259145246Sbrooks cmd->d[type / 32] |= ( 1 << (type % 32)); 1260145246Sbrooks } 1261145246Sbrooks cmd->o.opcode = O_ICMP6TYPE; 1262145246Sbrooks cmd->o.len |= F_INSN_SIZE(ipfw_insn_icmp6); 1263145246Sbrooks} 1264145246Sbrooks 1265145246Sbrooks 1266145246Sbrooksstatic void 1267145246Sbrooksprint_icmp6types(ipfw_insn_u32 *cmd) 1268145246Sbrooks{ 1269145246Sbrooks int i, j; 1270145246Sbrooks char sep= ' '; 1271145246Sbrooks 1272152923Sume printf(" ip6 icmp6types"); 1273145246Sbrooks for (i = 0; i < 7; i++) 1274145246Sbrooks for (j=0; j < 32; ++j) { 1275145246Sbrooks if ( (cmd->d[i] & (1 << (j))) == 0) 1276145246Sbrooks continue; 1277145246Sbrooks printf("%c%d", sep, (i*32 + j)); 1278145246Sbrooks sep = ','; 1279145246Sbrooks } 1280145246Sbrooks} 1281145246Sbrooks 1282145246Sbrooksstatic void 1283145246Sbrooksprint_flow6id( ipfw_insn_u32 *cmd) 1284145246Sbrooks{ 1285145246Sbrooks uint16_t i, limit = cmd->o.arg1; 1286145246Sbrooks char sep = ','; 1287145246Sbrooks 1288145246Sbrooks printf(" flow-id "); 1289145246Sbrooks for( i=0; i < limit; ++i) { 1290145246Sbrooks if (i == limit - 1) 1291145246Sbrooks sep = ' '; 1292145246Sbrooks printf("%d%c", cmd->d[i], sep); 1293145246Sbrooks } 1294145246Sbrooks} 1295145246Sbrooks 1296145246Sbrooks/* structure and define for the extension header in ipv6 */ 1297145246Sbrooksstatic struct _s_x ext6hdrcodes[] = { 1298145246Sbrooks { "frag", EXT_FRAGMENT }, 1299145246Sbrooks { "hopopt", EXT_HOPOPTS }, 1300145246Sbrooks { "route", EXT_ROUTING }, 1301149020Sbz { "dstopt", EXT_DSTOPTS }, 1302145246Sbrooks { "ah", EXT_AH }, 1303145246Sbrooks { "esp", EXT_ESP }, 1304145246Sbrooks { NULL, 0 } 1305145246Sbrooks}; 1306145246Sbrooks 1307145246Sbrooks/* fills command for the extension header filtering */ 1308145246Sbrooksint 1309145246Sbrooksfill_ext6hdr( ipfw_insn *cmd, char *av) 1310145246Sbrooks{ 1311145246Sbrooks int tok; 1312145246Sbrooks char *s = av; 1313145246Sbrooks 1314145246Sbrooks cmd->arg1 = 0; 1315145246Sbrooks 1316145246Sbrooks while(s) { 1317145246Sbrooks av = strsep( &s, ",") ; 1318145246Sbrooks tok = match_token(ext6hdrcodes, av); 1319145246Sbrooks switch (tok) { 1320145246Sbrooks case EXT_FRAGMENT: 1321145246Sbrooks cmd->arg1 |= EXT_FRAGMENT; 1322145246Sbrooks break; 1323145246Sbrooks 1324145246Sbrooks case EXT_HOPOPTS: 1325145246Sbrooks cmd->arg1 |= EXT_HOPOPTS; 1326145246Sbrooks break; 1327145246Sbrooks 1328145246Sbrooks case EXT_ROUTING: 1329145246Sbrooks cmd->arg1 |= EXT_ROUTING; 1330145246Sbrooks break; 1331145246Sbrooks 1332149020Sbz case EXT_DSTOPTS: 1333149020Sbz cmd->arg1 |= EXT_DSTOPTS; 1334149020Sbz break; 1335149020Sbz 1336145246Sbrooks case EXT_AH: 1337145246Sbrooks cmd->arg1 |= EXT_AH; 1338145246Sbrooks break; 1339145246Sbrooks 1340145246Sbrooks case EXT_ESP: 1341145246Sbrooks cmd->arg1 |= EXT_ESP; 1342145246Sbrooks break; 1343145246Sbrooks 1344145246Sbrooks default: 1345145246Sbrooks errx( EX_DATAERR, "invalid option for ipv6 exten header" ); 1346145246Sbrooks break; 1347145246Sbrooks } 1348145246Sbrooks } 1349145246Sbrooks if (cmd->arg1 == 0 ) 1350145246Sbrooks return 0; 1351145246Sbrooks cmd->opcode = O_EXT_HDR; 1352145246Sbrooks cmd->len |= F_INSN_SIZE( ipfw_insn ); 1353145246Sbrooks return 1; 1354145246Sbrooks} 1355145246Sbrooks 1356145246Sbrooksvoid 1357145246Sbrooksprint_ext6hdr( ipfw_insn *cmd ) 1358145246Sbrooks{ 1359145246Sbrooks char sep = ' '; 1360145246Sbrooks 1361145246Sbrooks printf(" extension header:"); 1362145246Sbrooks if (cmd->arg1 & EXT_FRAGMENT ) { 1363145246Sbrooks printf("%cfragmentation", sep); 1364145246Sbrooks sep = ','; 1365145246Sbrooks } 1366145246Sbrooks if (cmd->arg1 & EXT_HOPOPTS ) { 1367145246Sbrooks printf("%chop options", sep); 1368145246Sbrooks sep = ','; 1369145246Sbrooks } 1370145246Sbrooks if (cmd->arg1 & EXT_ROUTING ) { 1371145246Sbrooks printf("%crouting options", sep); 1372145246Sbrooks sep = ','; 1373145246Sbrooks } 1374149020Sbz if (cmd->arg1 & EXT_DSTOPTS ) { 1375149020Sbz printf("%cdestination options", sep); 1376149020Sbz sep = ','; 1377149020Sbz } 1378145246Sbrooks if (cmd->arg1 & EXT_AH ) { 1379145246Sbrooks printf("%cauthentication header", sep); 1380145246Sbrooks sep = ','; 1381145246Sbrooks } 1382145246Sbrooks if (cmd->arg1 & EXT_ESP ) { 1383145246Sbrooks printf("%cencapsulated security payload", sep); 1384145246Sbrooks } 1385145246Sbrooks} 1386145246Sbrooks 138798943Sluigi/* 138898943Sluigi * show_ipfw() prints the body of an ipfw rule. 138998943Sluigi * Because the standard rule has at least proto src_ip dst_ip, we use 139098943Sluigi * a helper function to produce these entries if not provided explicitly. 1391102087Sluigi * The first argument is the list of fields we have, the second is 1392102087Sluigi * the list of fields we want to be printed. 1393101978Sluigi * 1394102087Sluigi * Special cases if we have provided a MAC header: 1395102087Sluigi * + if the rule does not contain IP addresses/ports, do not print them; 1396102087Sluigi * + if the rule does not contain an IP proto, print "all" instead of "ip"; 1397102087Sluigi * 1398102087Sluigi * Once we have 'have_options', IP header fields are printed as options. 139998943Sluigi */ 1400101978Sluigi#define HAVE_PROTO 0x0001 1401101978Sluigi#define HAVE_SRCIP 0x0002 1402101978Sluigi#define HAVE_DSTIP 0x0004 1403169139Smaxim#define HAVE_PROTO4 0x0008 1404169139Smaxim#define HAVE_PROTO6 0x0010 1405102087Sluigi#define HAVE_OPTIONS 0x8000 140698943Sluigi 1407101978Sluigi#define HAVE_IP (HAVE_PROTO | HAVE_SRCIP | HAVE_DSTIP) 140898943Sluigistatic void 1409102087Sluigishow_prerequisites(int *flags, int want, int cmd) 141098943Sluigi{ 1411123495Sluigi if (comment_only) 1412123495Sluigi return; 1413102087Sluigi if ( (*flags & HAVE_IP) == HAVE_IP) 1414102087Sluigi *flags |= HAVE_OPTIONS; 1415102087Sluigi 1416102087Sluigi if ( !(*flags & HAVE_OPTIONS)) { 1417102087Sluigi if ( !(*flags & HAVE_PROTO) && (want & HAVE_PROTO)) 1418146894Smlaier if ( (*flags & HAVE_PROTO4)) 1419146894Smlaier printf(" ip4"); 1420146894Smlaier else if ( (*flags & HAVE_PROTO6)) 1421146894Smlaier printf(" ip6"); 1422146894Smlaier else 1423146894Smlaier printf(" ip"); 1424146894Smlaier 1425102087Sluigi if ( !(*flags & HAVE_SRCIP) && (want & HAVE_SRCIP)) 1426102087Sluigi printf(" from any"); 1427102087Sluigi if ( !(*flags & HAVE_DSTIP) && (want & HAVE_DSTIP)) 1428102087Sluigi printf(" to any"); 1429102087Sluigi } 143098943Sluigi *flags |= want; 143198943Sluigi} 143298943Sluigi 143398943Sluigistatic void 1434112189Smaximshow_ipfw(struct ip_fw *rule, int pcwidth, int bcwidth) 143598943Sluigi{ 1436107291Skeramida static int twidth = 0; 143798943Sluigi int l; 1438158879Soleg ipfw_insn *cmd, *tagptr = NULL; 1439117626Sluigi char *comment = NULL; /* ptr to comment if we have one */ 144098943Sluigi int proto = 0; /* default */ 144198943Sluigi int flags = 0; /* prerequisites */ 144298943Sluigi ipfw_insn_log *logptr = NULL; /* set if we find an O_LOG */ 1443136071Sgreen ipfw_insn_altq *altqptr = NULL; /* set if we find an O_ALTQ */ 144498943Sluigi int or_block = 0; /* we are in an or block */ 1445117328Sluigi uint32_t set_disable; 144698943Sluigi 1447115793Sticso bcopy(&rule->next_rule, &set_disable, sizeof(set_disable)); 1448101628Sluigi 1449101628Sluigi if (set_disable & (1 << rule->set)) { /* disabled */ 1450101628Sluigi if (!show_sets) 1451101628Sluigi return; 1452101628Sluigi else 1453101628Sluigi printf("# DISABLED "); 1454101628Sluigi } 145598943Sluigi printf("%05u ", rule->rulenum); 145698943Sluigi 1457117469Sluigi if (pcwidth>0 || bcwidth>0) 1458115793Sticso printf("%*llu %*llu ", pcwidth, align_uint64(&rule->pcnt), 1459115793Sticso bcwidth, align_uint64(&rule->bcnt)); 146098943Sluigi 1461117472Sluigi if (do_time == 2) 1462117472Sluigi printf("%10u ", rule->timestamp); 1463117472Sluigi else if (do_time == 1) { 1464107291Skeramida char timestr[30]; 1465107291Skeramida time_t t = (time_t)0; 1466107291Skeramida 1467107291Skeramida if (twidth == 0) { 1468107291Skeramida strcpy(timestr, ctime(&t)); 1469107291Skeramida *strchr(timestr, '\n') = '\0'; 1470107291Skeramida twidth = strlen(timestr); 1471107291Skeramida } 147298943Sluigi if (rule->timestamp) { 1473107291Skeramida t = _long_to_time(rule->timestamp); 147498943Sluigi 147598943Sluigi strcpy(timestr, ctime(&t)); 147698943Sluigi *strchr(timestr, '\n') = '\0'; 147798943Sluigi printf("%s ", timestr); 147898943Sluigi } else { 1479107291Skeramida printf("%*s", twidth, " "); 148098943Sluigi } 148198943Sluigi } 148298943Sluigi 1483101628Sluigi if (show_sets) 1484101628Sluigi printf("set %d ", rule->set); 1485101628Sluigi 148698943Sluigi /* 1487107289Sluigi * print the optional "match probability" 1488107289Sluigi */ 1489107289Sluigi if (rule->cmd_len > 0) { 1490107289Sluigi cmd = rule->cmd ; 1491107289Sluigi if (cmd->opcode == O_PROB) { 1492107289Sluigi ipfw_insn_u32 *p = (ipfw_insn_u32 *)cmd; 1493107289Sluigi double d = 1.0 * p->d[0]; 1494107289Sluigi 1495107289Sluigi d = (d / 0x7fffffff); 1496107289Sluigi printf("prob %f ", d); 1497107289Sluigi } 1498107289Sluigi } 1499107289Sluigi 1500107289Sluigi /* 150198943Sluigi * first print actions 150298943Sluigi */ 150398943Sluigi for (l = rule->cmd_len - rule->act_ofs, cmd = ACTION_PTR(rule); 150498943Sluigi l > 0 ; l -= F_LEN(cmd), cmd += F_LEN(cmd)) { 150598943Sluigi switch(cmd->opcode) { 150698943Sluigi case O_CHECK_STATE: 150798943Sluigi printf("check-state"); 1508102087Sluigi flags = HAVE_IP; /* avoid printing anything else */ 150998943Sluigi break; 151098943Sluigi 151198943Sluigi case O_ACCEPT: 151298943Sluigi printf("allow"); 151398943Sluigi break; 151498943Sluigi 151598943Sluigi case O_COUNT: 151698943Sluigi printf("count"); 151798943Sluigi break; 151898943Sluigi 151998943Sluigi case O_DENY: 152098943Sluigi printf("deny"); 152198943Sluigi break; 152298943Sluigi 152399475Sluigi case O_REJECT: 152499475Sluigi if (cmd->arg1 == ICMP_REJECT_RST) 152599475Sluigi printf("reset"); 152699475Sluigi else if (cmd->arg1 == ICMP_UNREACH_HOST) 152799475Sluigi printf("reject"); 152899475Sluigi else 152999475Sluigi print_reject_code(cmd->arg1); 153099475Sluigi break; 153199475Sluigi 1532149020Sbz case O_UNREACH6: 1533149020Sbz if (cmd->arg1 == ICMP6_UNREACH_RST) 1534149020Sbz printf("reset6"); 1535149020Sbz else 1536149020Sbz print_unreach6_code(cmd->arg1); 1537149020Sbz break; 1538149020Sbz 1539159636Soleg case O_SKIPTO: 1540159636Soleg PRINT_UINT_ARG("skipto ", cmd->arg1); 154198943Sluigi break; 154298943Sluigi 154398943Sluigi case O_PIPE: 1544159636Soleg PRINT_UINT_ARG("pipe ", cmd->arg1); 1545159636Soleg break; 1546159636Soleg 154798943Sluigi case O_QUEUE: 1548159636Soleg PRINT_UINT_ARG("queue ", cmd->arg1); 1549159636Soleg break; 1550159636Soleg 155198943Sluigi case O_DIVERT: 1552159636Soleg PRINT_UINT_ARG("divert ", cmd->arg1); 1553159636Soleg break; 1554159636Soleg 155598943Sluigi case O_TEE: 1556159636Soleg PRINT_UINT_ARG("tee ", cmd->arg1); 1557159636Soleg break; 1558159636Soleg 1559141351Sglebius case O_NETGRAPH: 1560159636Soleg PRINT_UINT_ARG("netgraph ", cmd->arg1); 1561159636Soleg break; 1562159636Soleg 1563141351Sglebius case O_NGTEE: 1564159636Soleg PRINT_UINT_ARG("ngtee ", cmd->arg1); 1565159636Soleg break; 1566141351Sglebius 156798943Sluigi case O_FORWARD_IP: 156898943Sluigi { 156998943Sluigi ipfw_insn_sa *s = (ipfw_insn_sa *)cmd; 157098943Sluigi 1571161424Sjulian if (s->sa.sin_addr.s_addr == INADDR_ANY) { 1572161424Sjulian printf("fwd tablearg"); 1573161424Sjulian } else { 1574161424Sjulian printf("fwd %s", inet_ntoa(s->sa.sin_addr)); 1575161424Sjulian } 157698943Sluigi if (s->sa.sin_port) 1577103241Sluigi printf(",%d", s->sa.sin_port); 157898943Sluigi } 157998943Sluigi break; 158098943Sluigi 158198943Sluigi case O_LOG: /* O_LOG is printed last */ 158298943Sluigi logptr = (ipfw_insn_log *)cmd; 158398943Sluigi break; 158498943Sluigi 1585136071Sgreen case O_ALTQ: /* O_ALTQ is printed after O_LOG */ 1586136071Sgreen altqptr = (ipfw_insn_altq *)cmd; 1587136071Sgreen break; 1588136071Sgreen 1589158879Soleg case O_TAG: 1590158879Soleg tagptr = cmd; 1591158879Soleg break; 1592158879Soleg 1593165648Spiso case O_NAT: 1594165648Spiso printf("nat %u", cmd->arg1); 1595165648Spiso break; 1596165648Spiso 159798943Sluigi default: 1598136071Sgreen printf("** unrecognized action %d len %d ", 159998943Sluigi cmd->opcode, cmd->len); 160098943Sluigi } 160198943Sluigi } 160298943Sluigi if (logptr) { 160398943Sluigi if (logptr->max_log > 0) 160499909Sluigi printf(" log logamount %d", logptr->max_log); 160598943Sluigi else 160699909Sluigi printf(" log"); 160798943Sluigi } 1608136071Sgreen if (altqptr) { 1609136071Sgreen const char *qname; 1610102087Sluigi 1611136071Sgreen qname = altq_qid_to_name(altqptr->qid); 1612136071Sgreen if (qname == NULL) 1613136071Sgreen printf(" altq ?<%u>", altqptr->qid); 1614136071Sgreen else 1615136071Sgreen printf(" altq %s", qname); 1616136071Sgreen } 1617158879Soleg if (tagptr) { 1618158879Soleg if (tagptr->len & F_NOT) 1619159636Soleg PRINT_UINT_ARG(" untag ", tagptr->arg1); 1620158879Soleg else 1621159636Soleg PRINT_UINT_ARG(" tag ", tagptr->arg1); 1622158879Soleg } 1623136071Sgreen 162498943Sluigi /* 1625102087Sluigi * then print the body. 162698943Sluigi */ 1627146894Smlaier for (l = rule->act_ofs, cmd = rule->cmd ; 1628146894Smlaier l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 1629146894Smlaier if ((cmd->len & F_OR) || (cmd->len & F_NOT)) 1630146894Smlaier continue; 1631146894Smlaier if (cmd->opcode == O_IP4) { 1632146894Smlaier flags |= HAVE_PROTO4; 1633146894Smlaier break; 1634146894Smlaier } else if (cmd->opcode == O_IP6) { 1635146894Smlaier flags |= HAVE_PROTO6; 1636146894Smlaier break; 1637146894Smlaier } 1638146894Smlaier } 1639102087Sluigi if (rule->_pad & 1) { /* empty rules before options */ 1640146894Smlaier if (!do_compact) { 1641146894Smlaier show_prerequisites(&flags, HAVE_PROTO, 0); 1642146894Smlaier printf(" from any to any"); 1643146894Smlaier } 1644102087Sluigi flags |= HAVE_IP | HAVE_OPTIONS; 1645102087Sluigi } 1646102087Sluigi 1647123495Sluigi if (comment_only) 1648123495Sluigi comment = "..."; 1649123495Sluigi 165098943Sluigi for (l = rule->act_ofs, cmd = rule->cmd ; 165198943Sluigi l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 165299475Sluigi /* useful alias */ 165399475Sluigi ipfw_insn_u32 *cmd32 = (ipfw_insn_u32 *)cmd; 165498943Sluigi 1655123495Sluigi if (comment_only) { 1656123495Sluigi if (cmd->opcode != O_NOP) 1657123495Sluigi continue; 1658123495Sluigi printf(" // %s\n", (char *)(cmd + 1)); 1659123495Sluigi return; 1660123495Sluigi } 1661123495Sluigi 1662102087Sluigi show_prerequisites(&flags, 0, cmd->opcode); 1663102087Sluigi 166498943Sluigi switch(cmd->opcode) { 1665117577Sluigi case O_PROB: 1666107289Sluigi break; /* done already */ 1667107289Sluigi 166898943Sluigi case O_PROBE_STATE: 166998943Sluigi break; /* no need to print anything here */ 167098943Sluigi 167198943Sluigi case O_IP_SRC: 1672130281Sru case O_IP_SRC_LOOKUP: 167398943Sluigi case O_IP_SRC_MASK: 167498943Sluigi case O_IP_SRC_ME: 167598943Sluigi case O_IP_SRC_SET: 1676102087Sluigi show_prerequisites(&flags, HAVE_PROTO, 0); 167798943Sluigi if (!(flags & HAVE_SRCIP)) 167898943Sluigi printf(" from"); 167998943Sluigi if ((cmd->len & F_OR) && !or_block) 168098943Sluigi printf(" {"); 1681102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1682102087Sluigi (flags & HAVE_OPTIONS) ? " src-ip" : ""); 168398943Sluigi flags |= HAVE_SRCIP; 168498943Sluigi break; 168598943Sluigi 168698943Sluigi case O_IP_DST: 1687130281Sru case O_IP_DST_LOOKUP: 168898943Sluigi case O_IP_DST_MASK: 168998943Sluigi case O_IP_DST_ME: 169098943Sluigi case O_IP_DST_SET: 1691102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 169298943Sluigi if (!(flags & HAVE_DSTIP)) 169398943Sluigi printf(" to"); 169498943Sluigi if ((cmd->len & F_OR) && !or_block) 169598943Sluigi printf(" {"); 1696102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1697102087Sluigi (flags & HAVE_OPTIONS) ? " dst-ip" : ""); 169898943Sluigi flags |= HAVE_DSTIP; 169998943Sluigi break; 170098943Sluigi 1701145246Sbrooks case O_IP6_SRC: 1702145246Sbrooks case O_IP6_SRC_MASK: 1703145246Sbrooks case O_IP6_SRC_ME: 1704147105Smlaier show_prerequisites(&flags, HAVE_PROTO, 0); 1705145246Sbrooks if (!(flags & HAVE_SRCIP)) 1706145246Sbrooks printf(" from"); 1707145246Sbrooks if ((cmd->len & F_OR) && !or_block) 1708145246Sbrooks printf(" {"); 1709145246Sbrooks print_ip6((ipfw_insn_ip6 *)cmd, 1710145246Sbrooks (flags & HAVE_OPTIONS) ? " src-ip6" : ""); 1711145246Sbrooks flags |= HAVE_SRCIP | HAVE_PROTO; 1712145246Sbrooks break; 1713145246Sbrooks 1714145246Sbrooks case O_IP6_DST: 1715145246Sbrooks case O_IP6_DST_MASK: 1716145246Sbrooks case O_IP6_DST_ME: 1717145246Sbrooks show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 1718145246Sbrooks if (!(flags & HAVE_DSTIP)) 1719145246Sbrooks printf(" to"); 1720145246Sbrooks if ((cmd->len & F_OR) && !or_block) 1721145246Sbrooks printf(" {"); 1722145246Sbrooks print_ip6((ipfw_insn_ip6 *)cmd, 1723145246Sbrooks (flags & HAVE_OPTIONS) ? " dst-ip6" : ""); 1724145246Sbrooks flags |= HAVE_DSTIP; 1725145246Sbrooks break; 1726145246Sbrooks 1727145246Sbrooks case O_FLOW6ID: 1728145246Sbrooks print_flow6id( (ipfw_insn_u32 *) cmd ); 1729145246Sbrooks flags |= HAVE_OPTIONS; 1730145246Sbrooks break; 1731145246Sbrooks 173298943Sluigi case O_IP_DSTPORT: 1733102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 173498943Sluigi case O_IP_SRCPORT: 1735102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 1736101641Sluigi if ((cmd->len & F_OR) && !or_block) 1737101641Sluigi printf(" {"); 1738102087Sluigi print_newports((ipfw_insn_u16 *)cmd, proto, 1739102087Sluigi (flags & HAVE_OPTIONS) ? cmd->opcode : 0); 174098943Sluigi break; 174198943Sluigi 174298943Sluigi case O_PROTO: { 1743145246Sbrooks struct protoent *pe = NULL; 174498943Sluigi 174598943Sluigi if ((cmd->len & F_OR) && !or_block) 174698943Sluigi printf(" {"); 174798943Sluigi if (cmd->len & F_NOT) 174898943Sluigi printf(" not"); 174998943Sluigi proto = cmd->arg1; 1750145567Sbrooks pe = getprotobynumber(cmd->arg1); 1751146894Smlaier if ((flags & (HAVE_PROTO4 | HAVE_PROTO6)) && 1752146894Smlaier !(flags & HAVE_PROTO)) 1753146894Smlaier show_prerequisites(&flags, 1754146894Smlaier HAVE_IP | HAVE_OPTIONS, 0); 1755102087Sluigi if (flags & HAVE_OPTIONS) 1756102087Sluigi printf(" proto"); 175798943Sluigi if (pe) 175898943Sluigi printf(" %s", pe->p_name); 175998943Sluigi else 176098943Sluigi printf(" %u", cmd->arg1); 176198943Sluigi } 176298943Sluigi flags |= HAVE_PROTO; 176398943Sluigi break; 1764106505Smaxim 176598943Sluigi default: /*options ... */ 1766146894Smlaier if (!(cmd->len & (F_OR|F_NOT))) 1767146894Smlaier if (((cmd->opcode == O_IP6) && 1768146894Smlaier (flags & HAVE_PROTO6)) || 1769146894Smlaier ((cmd->opcode == O_IP4) && 1770146894Smlaier (flags & HAVE_PROTO4))) 1771146894Smlaier break; 1772102087Sluigi show_prerequisites(&flags, HAVE_IP | HAVE_OPTIONS, 0); 177398943Sluigi if ((cmd->len & F_OR) && !or_block) 177498943Sluigi printf(" {"); 177598943Sluigi if (cmd->len & F_NOT && cmd->opcode != O_IN) 177698943Sluigi printf(" not"); 177798943Sluigi switch(cmd->opcode) { 1778169139Smaxim case O_MACADDR2: { 1779169139Smaxim ipfw_insn_mac *m = (ipfw_insn_mac *)cmd; 1780169139Smaxim 1781169139Smaxim printf(" MAC"); 1782169139Smaxim print_mac(m->addr, m->mask); 1783169139Smaxim print_mac(m->addr + 6, m->mask + 6); 1784169139Smaxim } 1785169139Smaxim break; 1786169139Smaxim 1787169139Smaxim case O_MAC_TYPE: 1788169139Smaxim print_newports((ipfw_insn_u16 *)cmd, 1789169139Smaxim IPPROTO_ETHERTYPE, cmd->opcode); 1790169139Smaxim break; 1791169139Smaxim 1792169139Smaxim 179398943Sluigi case O_FRAG: 179498943Sluigi printf(" frag"); 179598943Sluigi break; 179698943Sluigi 179798943Sluigi case O_IN: 179898943Sluigi printf(cmd->len & F_NOT ? " out" : " in"); 179998943Sluigi break; 180098943Sluigi 1801136073Sgreen case O_DIVERTED: 1802136073Sgreen switch (cmd->arg1) { 1803136073Sgreen case 3: 1804136073Sgreen printf(" diverted"); 1805136073Sgreen break; 1806136073Sgreen case 1: 1807136073Sgreen printf(" diverted-loopback"); 1808136073Sgreen break; 1809136073Sgreen case 2: 1810136073Sgreen printf(" diverted-output"); 1811136073Sgreen break; 1812136073Sgreen default: 1813136073Sgreen printf(" diverted-?<%u>", cmd->arg1); 1814136073Sgreen break; 1815136073Sgreen } 1816136073Sgreen break; 1817136073Sgreen 181898943Sluigi case O_LAYER2: 181998943Sluigi printf(" layer2"); 182098943Sluigi break; 182198943Sluigi case O_XMIT: 182298943Sluigi case O_RECV: 1823140423Sglebius case O_VIA: 1824140423Sglebius { 1825117469Sluigi char const *s; 182698943Sluigi ipfw_insn_if *cmdif = (ipfw_insn_if *)cmd; 182798943Sluigi 182898943Sluigi if (cmd->opcode == O_XMIT) 182998943Sluigi s = "xmit"; 183098943Sluigi else if (cmd->opcode == O_RECV) 183198943Sluigi s = "recv"; 1832117469Sluigi else /* if (cmd->opcode == O_VIA) */ 183398943Sluigi s = "via"; 183498943Sluigi if (cmdif->name[0] == '\0') 183599475Sluigi printf(" %s %s", s, 183699475Sluigi inet_ntoa(cmdif->p.ip)); 1837140423Sglebius else 1838140423Sglebius printf(" %s %s", s, cmdif->name); 1839140423Sglebius 184098943Sluigi break; 1841140423Sglebius } 184298943Sluigi case O_IPID: 1843116690Sluigi if (F_LEN(cmd) == 1) 1844116690Sluigi printf(" ipid %u", cmd->arg1 ); 1845116690Sluigi else 1846116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1847116690Sluigi O_IPID); 184898943Sluigi break; 184998943Sluigi 185098943Sluigi case O_IPTTL: 1851116690Sluigi if (F_LEN(cmd) == 1) 1852116690Sluigi printf(" ipttl %u", cmd->arg1 ); 1853116690Sluigi else 1854116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1855116690Sluigi O_IPTTL); 185698943Sluigi break; 185798943Sluigi 185898943Sluigi case O_IPVER: 185998943Sluigi printf(" ipver %u", cmd->arg1 ); 186098943Sluigi break; 186198943Sluigi 186299475Sluigi case O_IPPRECEDENCE: 186399475Sluigi printf(" ipprecedence %u", (cmd->arg1) >> 5 ); 186499475Sluigi break; 186599475Sluigi 186698943Sluigi case O_IPLEN: 1867116690Sluigi if (F_LEN(cmd) == 1) 1868116690Sluigi printf(" iplen %u", cmd->arg1 ); 1869116690Sluigi else 1870116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1871116690Sluigi O_IPLEN); 187298943Sluigi break; 187398943Sluigi 1874101116Sluigi case O_IPOPT: 187598943Sluigi print_flags("ipoptions", cmd, f_ipopts); 187698943Sluigi break; 187798943Sluigi 187899475Sluigi case O_IPTOS: 187999475Sluigi print_flags("iptos", cmd, f_iptos); 188099475Sluigi break; 188199475Sluigi 188299475Sluigi case O_ICMPTYPE: 188399475Sluigi print_icmptypes((ipfw_insn_u32 *)cmd); 188499475Sluigi break; 188599475Sluigi 188698943Sluigi case O_ESTAB: 188798943Sluigi printf(" established"); 188898943Sluigi break; 188998943Sluigi 1890136075Sgreen case O_TCPDATALEN: 1891136075Sgreen if (F_LEN(cmd) == 1) 1892136075Sgreen printf(" tcpdatalen %u", cmd->arg1 ); 1893136075Sgreen else 1894136075Sgreen print_newports((ipfw_insn_u16 *)cmd, 0, 1895136075Sgreen O_TCPDATALEN); 1896136075Sgreen break; 1897136075Sgreen 189898943Sluigi case O_TCPFLAGS: 189998943Sluigi print_flags("tcpflags", cmd, f_tcpflags); 190098943Sluigi break; 190198943Sluigi 190298943Sluigi case O_TCPOPTS: 190398943Sluigi print_flags("tcpoptions", cmd, f_tcpopts); 190498943Sluigi break; 190598943Sluigi 190698943Sluigi case O_TCPWIN: 190798943Sluigi printf(" tcpwin %d", ntohs(cmd->arg1)); 190898943Sluigi break; 190998943Sluigi 191098943Sluigi case O_TCPACK: 191198943Sluigi printf(" tcpack %d", ntohl(cmd32->d[0])); 191298943Sluigi break; 191398943Sluigi 191498943Sluigi case O_TCPSEQ: 191598943Sluigi printf(" tcpseq %d", ntohl(cmd32->d[0])); 191698943Sluigi break; 191798943Sluigi 191898943Sluigi case O_UID: 191998943Sluigi { 192098943Sluigi struct passwd *pwd = getpwuid(cmd32->d[0]); 192198943Sluigi 192298943Sluigi if (pwd) 192398943Sluigi printf(" uid %s", pwd->pw_name); 192498943Sluigi else 192598943Sluigi printf(" uid %u", cmd32->d[0]); 192698943Sluigi } 192798943Sluigi break; 192898943Sluigi 192998943Sluigi case O_GID: 193098943Sluigi { 193198943Sluigi struct group *grp = getgrgid(cmd32->d[0]); 193298943Sluigi 193398943Sluigi if (grp) 193498943Sluigi printf(" gid %s", grp->gr_name); 193598943Sluigi else 193698943Sluigi printf(" gid %u", cmd32->d[0]); 193798943Sluigi } 193898943Sluigi break; 193998943Sluigi 1940133600Scsjp case O_JAIL: 1941133600Scsjp printf(" jail %d", cmd32->d[0]); 1942133600Scsjp break; 1943133600Scsjp 1944112250Scjc case O_VERREVPATH: 1945112250Scjc printf(" verrevpath"); 1946112250Scjc break; 1947116919Sluigi 1948128575Sandre case O_VERSRCREACH: 1949128575Sandre printf(" versrcreach"); 1950128575Sandre break; 1951128575Sandre 1952133387Sandre case O_ANTISPOOF: 1953133387Sandre printf(" antispoof"); 1954133387Sandre break; 1955133387Sandre 1956117241Sluigi case O_IPSEC: 1957117241Sluigi printf(" ipsec"); 1958117241Sluigi break; 1959117241Sluigi 1960117469Sluigi case O_NOP: 1961117626Sluigi comment = (char *)(cmd + 1); 1962117469Sluigi break; 1963117469Sluigi 196498943Sluigi case O_KEEP_STATE: 196598943Sluigi printf(" keep-state"); 196698943Sluigi break; 196798943Sluigi 1968159636Soleg case O_LIMIT: { 196998943Sluigi struct _s_x *p = limit_masks; 197098943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 1971117328Sluigi uint8_t x = c->limit_mask; 1972117469Sluigi char const *comma = " "; 197398943Sluigi 197498943Sluigi printf(" limit"); 1975117577Sluigi for (; p->x != 0 ; p++) 197699909Sluigi if ((x & p->x) == p->x) { 197798943Sluigi x &= ~p->x; 197898943Sluigi printf("%s%s", comma, p->s); 197998943Sluigi comma = ","; 198098943Sluigi } 1981159636Soleg PRINT_UINT_ARG(" ", c->conn_limit); 198298943Sluigi break; 1983159636Soleg } 198498943Sluigi 1985146894Smlaier case O_IP6: 1986152923Sume printf(" ip6"); 1987145246Sbrooks break; 1988145246Sbrooks 1989146894Smlaier case O_IP4: 1990152923Sume printf(" ip4"); 1991146894Smlaier break; 1992146894Smlaier 1993145246Sbrooks case O_ICMP6TYPE: 1994145246Sbrooks print_icmp6types((ipfw_insn_u32 *)cmd); 1995145246Sbrooks break; 1996145246Sbrooks 1997145246Sbrooks case O_EXT_HDR: 1998145246Sbrooks print_ext6hdr( (ipfw_insn *) cmd ); 1999145246Sbrooks break; 2000145246Sbrooks 2001158879Soleg case O_TAGGED: 2002158879Soleg if (F_LEN(cmd) == 1) 2003159636Soleg PRINT_UINT_ARG(" tagged ", cmd->arg1); 2004158879Soleg else 2005159636Soleg print_newports((ipfw_insn_u16 *)cmd, 0, 2006159636Soleg O_TAGGED); 2007158879Soleg break; 2008158879Soleg 200998943Sluigi default: 201098943Sluigi printf(" [opcode %d len %d]", 201198943Sluigi cmd->opcode, cmd->len); 201298943Sluigi } 201398943Sluigi } 201498943Sluigi if (cmd->len & F_OR) { 201598943Sluigi printf(" or"); 201698943Sluigi or_block = 1; 201798943Sluigi } else if (or_block) { 201898943Sluigi printf(" }"); 201998943Sluigi or_block = 0; 202098943Sluigi } 202198943Sluigi } 2022102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 2023117626Sluigi if (comment) 2024117626Sluigi printf(" // %s", comment); 202598943Sluigi printf("\n"); 202698943Sluigi} 202798943Sluigi 202898943Sluigistatic void 2029112189Smaximshow_dyn_ipfw(ipfw_dyn_rule *d, int pcwidth, int bcwidth) 203098943Sluigi{ 203198943Sluigi struct protoent *pe; 203298943Sluigi struct in_addr a; 2033115793Sticso uint16_t rulenum; 2034159160Smlaier char buf[INET6_ADDRSTRLEN]; 203598943Sluigi 203698943Sluigi if (!do_expired) { 203798943Sluigi if (!d->expire && !(d->dyn_type == O_LIMIT_PARENT)) 203898943Sluigi return; 203998943Sluigi } 2040115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 2041117328Sluigi printf("%05d", rulenum); 2042117469Sluigi if (pcwidth>0 || bcwidth>0) 2043117328Sluigi printf(" %*llu %*llu (%ds)", pcwidth, 2044117328Sluigi align_uint64(&d->pcnt), bcwidth, 2045117328Sluigi align_uint64(&d->bcnt), d->expire); 204698943Sluigi switch (d->dyn_type) { 204798943Sluigi case O_LIMIT_PARENT: 204898943Sluigi printf(" PARENT %d", d->count); 204998943Sluigi break; 205098943Sluigi case O_LIMIT: 205198943Sluigi printf(" LIMIT"); 205298943Sluigi break; 205398943Sluigi case O_KEEP_STATE: /* bidir, no mask */ 2054106505Smaxim printf(" STATE"); 205598943Sluigi break; 205698943Sluigi } 205798943Sluigi 205898943Sluigi if ((pe = getprotobynumber(d->id.proto)) != NULL) 205998943Sluigi printf(" %s", pe->p_name); 206098943Sluigi else 206198943Sluigi printf(" proto %u", d->id.proto); 206298943Sluigi 2063159160Smlaier if (d->id.addr_type == 4) { 2064159160Smlaier a.s_addr = htonl(d->id.src_ip); 2065159160Smlaier printf(" %s %d", inet_ntoa(a), d->id.src_port); 206698943Sluigi 2067159160Smlaier a.s_addr = htonl(d->id.dst_ip); 2068159160Smlaier printf(" <-> %s %d", inet_ntoa(a), d->id.dst_port); 2069159160Smlaier } else if (d->id.addr_type == 6) { 2070159160Smlaier printf(" %s %d", inet_ntop(AF_INET6, &d->id.src_ip6, buf, 2071159160Smlaier sizeof(buf)), d->id.src_port); 2072159160Smlaier printf(" <-> %s %d", inet_ntop(AF_INET6, &d->id.dst_ip6, buf, 2073159160Smlaier sizeof(buf)), d->id.dst_port); 2074159160Smlaier } else 2075159160Smlaier printf(" UNKNOWN <-> UNKNOWN\n"); 2076159160Smlaier 207798943Sluigi printf("\n"); 207898943Sluigi} 207998943Sluigi 2080117469Sluigistatic int 208198943Sluigisort_q(const void *pa, const void *pb) 208298943Sluigi{ 208398943Sluigi int rev = (do_sort < 0); 208498943Sluigi int field = rev ? -do_sort : do_sort; 208598943Sluigi long long res = 0; 208698943Sluigi const struct dn_flow_queue *a = pa; 208798943Sluigi const struct dn_flow_queue *b = pb; 208898943Sluigi 208998943Sluigi switch (field) { 209098943Sluigi case 1: /* pkts */ 209198943Sluigi res = a->len - b->len; 209298943Sluigi break; 209398943Sluigi case 2: /* bytes */ 209498943Sluigi res = a->len_bytes - b->len_bytes; 209598943Sluigi break; 209698943Sluigi 209798943Sluigi case 3: /* tot pkts */ 209898943Sluigi res = a->tot_pkts - b->tot_pkts; 209998943Sluigi break; 210098943Sluigi 210198943Sluigi case 4: /* tot bytes */ 210298943Sluigi res = a->tot_bytes - b->tot_bytes; 210398943Sluigi break; 210498943Sluigi } 210598943Sluigi if (res < 0) 210698943Sluigi res = -1; 210798943Sluigi if (res > 0) 210898943Sluigi res = 1; 210998943Sluigi return (int)(rev ? res : -res); 211098943Sluigi} 211198943Sluigi 211298943Sluigistatic void 211398943Sluigilist_queues(struct dn_flow_set *fs, struct dn_flow_queue *q) 211498943Sluigi{ 211598943Sluigi int l; 2116145246Sbrooks int index_printed, indexes = 0; 2117145246Sbrooks char buff[255]; 2118145246Sbrooks struct protoent *pe; 211998943Sluigi 212098943Sluigi if (fs->rq_elements == 0) 212198943Sluigi return; 212298943Sluigi 212398943Sluigi if (do_sort != 0) 212498943Sluigi heapsort(q, fs->rq_elements, sizeof *q, sort_q); 2125145246Sbrooks 2126145246Sbrooks /* Print IPv4 flows */ 2127145246Sbrooks index_printed = 0; 212898943Sluigi for (l = 0; l < fs->rq_elements; l++) { 212998943Sluigi struct in_addr ina; 213098943Sluigi 2131145246Sbrooks /* XXX: Should check for IPv4 flows */ 2132145246Sbrooks if (IS_IP6_FLOW_ID(&(q[l].id))) 2133145246Sbrooks continue; 2134145246Sbrooks 2135145246Sbrooks if (!index_printed) { 2136145246Sbrooks index_printed = 1; 2137145246Sbrooks if (indexes > 0) /* currently a no-op */ 2138145246Sbrooks printf("\n"); 2139145246Sbrooks indexes++; 2140145246Sbrooks printf(" " 2141145246Sbrooks "mask: 0x%02x 0x%08x/0x%04x -> 0x%08x/0x%04x\n", 2142145246Sbrooks fs->flow_mask.proto, 2143145246Sbrooks fs->flow_mask.src_ip, fs->flow_mask.src_port, 2144145246Sbrooks fs->flow_mask.dst_ip, fs->flow_mask.dst_port); 2145145246Sbrooks 2146145246Sbrooks printf("BKT Prot ___Source IP/port____ " 2147145246Sbrooks "____Dest. IP/port____ " 2148145246Sbrooks "Tot_pkt/bytes Pkt/Byte Drp\n"); 2149145246Sbrooks } 2150145246Sbrooks 215198943Sluigi printf("%3d ", q[l].hash_slot); 215298943Sluigi pe = getprotobynumber(q[l].id.proto); 215398943Sluigi if (pe) 215498943Sluigi printf("%-4s ", pe->p_name); 215598943Sluigi else 215698943Sluigi printf("%4u ", q[l].id.proto); 2157145246Sbrooks ina.s_addr = htonl(q[l].id.src_ip); 215898943Sluigi printf("%15s/%-5d ", 215998943Sluigi inet_ntoa(ina), q[l].id.src_port); 216098943Sluigi ina.s_addr = htonl(q[l].id.dst_ip); 216198943Sluigi printf("%15s/%-5d ", 216298943Sluigi inet_ntoa(ina), q[l].id.dst_port); 216398943Sluigi printf("%4qu %8qu %2u %4u %3u\n", 216498943Sluigi q[l].tot_pkts, q[l].tot_bytes, 216598943Sluigi q[l].len, q[l].len_bytes, q[l].drops); 216698943Sluigi if (verbose) 216798943Sluigi printf(" S %20qd F %20qd\n", 216898943Sluigi q[l].S, q[l].F); 216998943Sluigi } 2170145246Sbrooks 2171145246Sbrooks /* Print IPv6 flows */ 2172145246Sbrooks index_printed = 0; 2173145246Sbrooks for (l = 0; l < fs->rq_elements; l++) { 2174145246Sbrooks if (!IS_IP6_FLOW_ID(&(q[l].id))) 2175145246Sbrooks continue; 2176145246Sbrooks 2177145246Sbrooks if (!index_printed) { 2178145246Sbrooks index_printed = 1; 2179145246Sbrooks if (indexes > 0) 2180145246Sbrooks printf("\n"); 2181145246Sbrooks indexes++; 2182145246Sbrooks printf("\n mask: proto: 0x%02x, flow_id: 0x%08x, ", 2183145246Sbrooks fs->flow_mask.proto, fs->flow_mask.flow_id6); 2184145246Sbrooks inet_ntop(AF_INET6, &(fs->flow_mask.src_ip6), 2185145246Sbrooks buff, sizeof(buff)); 2186145246Sbrooks printf("%s/0x%04x -> ", buff, fs->flow_mask.src_port); 2187145246Sbrooks inet_ntop( AF_INET6, &(fs->flow_mask.dst_ip6), 2188145246Sbrooks buff, sizeof(buff) ); 2189145246Sbrooks printf("%s/0x%04x\n", buff, fs->flow_mask.dst_port); 2190145246Sbrooks 2191145246Sbrooks printf("BKT ___Prot___ _flow-id_ " 2192145246Sbrooks "______________Source IPv6/port_______________ " 2193145246Sbrooks "_______________Dest. IPv6/port_______________ " 2194145246Sbrooks "Tot_pkt/bytes Pkt/Byte Drp\n"); 2195145246Sbrooks } 2196145246Sbrooks printf("%3d ", q[l].hash_slot); 2197145246Sbrooks pe = getprotobynumber(q[l].id.proto); 2198145246Sbrooks if (pe != NULL) 2199145246Sbrooks printf("%9s ", pe->p_name); 2200145246Sbrooks else 2201145246Sbrooks printf("%9u ", q[l].id.proto); 2202145246Sbrooks printf("%7d %39s/%-5d ", q[l].id.flow_id6, 2203145246Sbrooks inet_ntop(AF_INET6, &(q[l].id.src_ip6), buff, sizeof(buff)), 2204145246Sbrooks q[l].id.src_port); 2205145246Sbrooks printf(" %39s/%-5d ", 2206145246Sbrooks inet_ntop(AF_INET6, &(q[l].id.dst_ip6), buff, sizeof(buff)), 2207145246Sbrooks q[l].id.dst_port); 2208145246Sbrooks printf(" %4qu %8qu %2u %4u %3u\n", 2209145246Sbrooks q[l].tot_pkts, q[l].tot_bytes, 2210145246Sbrooks q[l].len, q[l].len_bytes, q[l].drops); 2211145246Sbrooks if (verbose) 2212145246Sbrooks printf(" S %20qd F %20qd\n", q[l].S, q[l].F); 2213145246Sbrooks } 221498943Sluigi} 221598943Sluigi 221698943Sluigistatic void 221798943Sluigiprint_flowset_parms(struct dn_flow_set *fs, char *prefix) 221898943Sluigi{ 221998943Sluigi int l; 222098943Sluigi char qs[30]; 222198943Sluigi char plr[30]; 222298943Sluigi char red[90]; /* Display RED parameters */ 222398943Sluigi 222498943Sluigi l = fs->qsize; 222598943Sluigi if (fs->flags_fs & DN_QSIZE_IS_BYTES) { 222698943Sluigi if (l >= 8192) 222798943Sluigi sprintf(qs, "%d KB", l / 1024); 222898943Sluigi else 222998943Sluigi sprintf(qs, "%d B", l); 223098943Sluigi } else 223198943Sluigi sprintf(qs, "%3d sl.", l); 223298943Sluigi if (fs->plr) 223398943Sluigi sprintf(plr, "plr %f", 1.0 * fs->plr / (double)(0x7fffffff)); 223498943Sluigi else 223598943Sluigi plr[0] = '\0'; 223698943Sluigi if (fs->flags_fs & DN_IS_RED) /* RED parameters */ 223798943Sluigi sprintf(red, 223898943Sluigi "\n\t %cRED w_q %f min_th %d max_th %d max_p %f", 223998943Sluigi (fs->flags_fs & DN_IS_GENTLE_RED) ? 'G' : ' ', 224098943Sluigi 1.0 * fs->w_q / (double)(1 << SCALE_RED), 224198943Sluigi SCALE_VAL(fs->min_th), 224298943Sluigi SCALE_VAL(fs->max_th), 224398943Sluigi 1.0 * fs->max_p / (double)(1 << SCALE_RED)); 224498943Sluigi else 224598943Sluigi sprintf(red, "droptail"); 224698943Sluigi 224798943Sluigi printf("%s %s%s %d queues (%d buckets) %s\n", 224898943Sluigi prefix, qs, plr, fs->rq_elements, fs->rq_size, red); 224998943Sluigi} 225098943Sluigi 225198943Sluigistatic void 2252117469Sluigilist_pipes(void *data, uint nbytes, int ac, char *av[]) 225398943Sluigi{ 2254117469Sluigi int rulenum; 225598943Sluigi void *next = data; 225698943Sluigi struct dn_pipe *p = (struct dn_pipe *) data; 225798943Sluigi struct dn_flow_set *fs; 225898943Sluigi struct dn_flow_queue *q; 225998943Sluigi int l; 226098943Sluigi 226198943Sluigi if (ac > 0) 226298943Sluigi rulenum = strtoul(*av++, NULL, 10); 226398943Sluigi else 226498943Sluigi rulenum = 0; 226598943Sluigi for (; nbytes >= sizeof *p; p = (struct dn_pipe *)next) { 226698943Sluigi double b = p->bandwidth; 226798943Sluigi char buf[30]; 226898943Sluigi char prefix[80]; 226998943Sluigi 2270161001Sstefanf if (SLIST_NEXT(p, next) != (struct dn_pipe *)DN_IS_PIPE) 227198943Sluigi break; /* done with pipes, now queues */ 227298943Sluigi 227398943Sluigi /* 227498943Sluigi * compute length, as pipe have variable size 227598943Sluigi */ 227698943Sluigi l = sizeof(*p) + p->fs.rq_elements * sizeof(*q); 2277117469Sluigi next = (char *)p + l; 227898943Sluigi nbytes -= l; 227998943Sluigi 2280134225Spjd if ((rulenum != 0 && rulenum != p->pipe_nr) || do_pipe == 2) 228198943Sluigi continue; 228298943Sluigi 228398943Sluigi /* 228498943Sluigi * Print rate (or clocking interface) 228598943Sluigi */ 228698943Sluigi if (p->if_name[0] != '\0') 228798943Sluigi sprintf(buf, "%s", p->if_name); 228898943Sluigi else if (b == 0) 228998943Sluigi sprintf(buf, "unlimited"); 229098943Sluigi else if (b >= 1000000) 229198943Sluigi sprintf(buf, "%7.3f Mbit/s", b/1000000); 229298943Sluigi else if (b >= 1000) 229398943Sluigi sprintf(buf, "%7.3f Kbit/s", b/1000); 229498943Sluigi else 229598943Sluigi sprintf(buf, "%7.3f bit/s ", b); 229698943Sluigi 229798943Sluigi sprintf(prefix, "%05d: %s %4d ms ", 229898943Sluigi p->pipe_nr, buf, p->delay); 229998943Sluigi print_flowset_parms(&(p->fs), prefix); 230098943Sluigi if (verbose) 230198943Sluigi printf(" V %20qd\n", p->V >> MY_M); 2302106505Smaxim 230398943Sluigi q = (struct dn_flow_queue *)(p+1); 230498943Sluigi list_queues(&(p->fs), q); 230598943Sluigi } 230698943Sluigi for (fs = next; nbytes >= sizeof *fs; fs = next) { 230798943Sluigi char prefix[80]; 230898943Sluigi 2309161001Sstefanf if (SLIST_NEXT(fs, next) != (struct dn_flow_set *)DN_IS_QUEUE) 231098943Sluigi break; 231198943Sluigi l = sizeof(*fs) + fs->rq_elements * sizeof(*q); 2312117469Sluigi next = (char *)fs + l; 231398943Sluigi nbytes -= l; 2314134225Spjd 2315134225Spjd if (rulenum != 0 && ((rulenum != fs->fs_nr && do_pipe == 2) || 2316134225Spjd (rulenum != fs->parent_nr && do_pipe == 1))) { 2317134225Spjd continue; 2318134225Spjd } 2319134225Spjd 232098943Sluigi q = (struct dn_flow_queue *)(fs+1); 232198943Sluigi sprintf(prefix, "q%05d: weight %d pipe %d ", 232298943Sluigi fs->fs_nr, fs->weight, fs->parent_nr); 232398943Sluigi print_flowset_parms(fs, prefix); 232498943Sluigi list_queues(fs, q); 232598943Sluigi } 232698943Sluigi} 232798943Sluigi 2328101978Sluigi/* 2329101978Sluigi * This one handles all set-related commands 2330101978Sluigi * ipfw set { show | enable | disable } 2331101978Sluigi * ipfw set swap X Y 2332101978Sluigi * ipfw set move X to Y 2333101978Sluigi * ipfw set move rule X to Y 2334101978Sluigi */ 233598943Sluigistatic void 2336101978Sluigisets_handler(int ac, char *av[]) 2337101978Sluigi{ 2338117328Sluigi uint32_t set_disable, masks[2]; 2339101978Sluigi int i, nbytes; 2340117328Sluigi uint16_t rulenum; 2341117328Sluigi uint8_t cmd, new_set; 2342101978Sluigi 2343101978Sluigi ac--; 2344101978Sluigi av++; 2345101978Sluigi 2346101978Sluigi if (!ac) 2347101978Sluigi errx(EX_USAGE, "set needs command"); 2348140271Sbrooks if (_substrcmp(*av, "show") == 0) { 2349101978Sluigi void *data; 2350117469Sluigi char const *msg; 2351101978Sluigi 2352101978Sluigi nbytes = sizeof(struct ip_fw); 2353117328Sluigi if ((data = calloc(1, nbytes)) == NULL) 2354117328Sluigi err(EX_OSERR, "calloc"); 2355119740Stmm if (do_cmd(IP_FW_GET, data, (uintptr_t)&nbytes) < 0) 2356101978Sluigi err(EX_OSERR, "getsockopt(IP_FW_GET)"); 2357115793Sticso bcopy(&((struct ip_fw *)data)->next_rule, 2358115793Sticso &set_disable, sizeof(set_disable)); 2359101978Sluigi 2360117655Sluigi for (i = 0, msg = "disable" ; i < RESVD_SET; i++) 2361117577Sluigi if ((set_disable & (1<<i))) { 2362101978Sluigi printf("%s %d", msg, i); 2363101978Sluigi msg = ""; 2364101978Sluigi } 2365101978Sluigi msg = (set_disable) ? " enable" : "enable"; 2366117655Sluigi for (i = 0; i < RESVD_SET; i++) 2367117577Sluigi if (!(set_disable & (1<<i))) { 2368101978Sluigi printf("%s %d", msg, i); 2369101978Sluigi msg = ""; 2370101978Sluigi } 2371101978Sluigi printf("\n"); 2372140271Sbrooks } else if (_substrcmp(*av, "swap") == 0) { 2373101978Sluigi ac--; av++; 2374101978Sluigi if (ac != 2) 2375101978Sluigi errx(EX_USAGE, "set swap needs 2 set numbers\n"); 2376101978Sluigi rulenum = atoi(av[0]); 2377101978Sluigi new_set = atoi(av[1]); 2378117655Sluigi if (!isdigit(*(av[0])) || rulenum > RESVD_SET) 2379101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[0]); 2380117655Sluigi if (!isdigit(*(av[1])) || new_set > RESVD_SET) 2381101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[1]); 2382101978Sluigi masks[0] = (4 << 24) | (new_set << 16) | (rulenum); 2383117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(uint32_t)); 2384140271Sbrooks } else if (_substrcmp(*av, "move") == 0) { 2385101978Sluigi ac--; av++; 2386140271Sbrooks if (ac && _substrcmp(*av, "rule") == 0) { 2387101978Sluigi cmd = 2; 2388101978Sluigi ac--; av++; 2389101978Sluigi } else 2390101978Sluigi cmd = 3; 2391140271Sbrooks if (ac != 3 || _substrcmp(av[1], "to") != 0) 2392101978Sluigi errx(EX_USAGE, "syntax: set move [rule] X to Y\n"); 2393101978Sluigi rulenum = atoi(av[0]); 2394101978Sluigi new_set = atoi(av[2]); 2395117655Sluigi if (!isdigit(*(av[0])) || (cmd == 3 && rulenum > RESVD_SET) || 2396101978Sluigi (cmd == 2 && rulenum == 65535) ) 2397101978Sluigi errx(EX_DATAERR, "invalid source number %s\n", av[0]); 2398117655Sluigi if (!isdigit(*(av[2])) || new_set > RESVD_SET) 2399101978Sluigi errx(EX_DATAERR, "invalid dest. set %s\n", av[1]); 2400101978Sluigi masks[0] = (cmd << 24) | (new_set << 16) | (rulenum); 2401117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(uint32_t)); 2402140271Sbrooks } else if (_substrcmp(*av, "disable") == 0 || 2403140271Sbrooks _substrcmp(*av, "enable") == 0 ) { 2404140271Sbrooks int which = _substrcmp(*av, "enable") == 0 ? 1 : 0; 2405101978Sluigi 2406101978Sluigi ac--; av++; 2407101978Sluigi masks[0] = masks[1] = 0; 2408101978Sluigi 2409101978Sluigi while (ac) { 2410101978Sluigi if (isdigit(**av)) { 2411101978Sluigi i = atoi(*av); 2412117655Sluigi if (i < 0 || i > RESVD_SET) 2413101978Sluigi errx(EX_DATAERR, 2414101978Sluigi "invalid set number %d\n", i); 2415101978Sluigi masks[which] |= (1<<i); 2416140271Sbrooks } else if (_substrcmp(*av, "disable") == 0) 2417101978Sluigi which = 0; 2418140271Sbrooks else if (_substrcmp(*av, "enable") == 0) 2419101978Sluigi which = 1; 2420101978Sluigi else 2421101978Sluigi errx(EX_DATAERR, 2422101978Sluigi "invalid set command %s\n", *av); 2423101978Sluigi av++; ac--; 2424101978Sluigi } 2425101978Sluigi if ( (masks[0] & masks[1]) != 0 ) 2426101978Sluigi errx(EX_DATAERR, 2427101978Sluigi "cannot enable and disable the same set\n"); 2428101978Sluigi 2429117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(masks)); 2430101978Sluigi if (i) 2431101978Sluigi warn("set enable/disable: setsockopt(IP_FW_DEL)"); 2432101978Sluigi } else 2433101978Sluigi errx(EX_USAGE, "invalid set command %s\n", *av); 2434101978Sluigi} 2435101978Sluigi 2436101978Sluigistatic void 2437109126Sdillonsysctl_handler(int ac, char *av[], int which) 2438109126Sdillon{ 2439109126Sdillon ac--; 2440109126Sdillon av++; 2441109126Sdillon 2442119668Smaxim if (ac == 0) { 2443109126Sdillon warnx("missing keyword to enable/disable\n"); 2444140271Sbrooks } else if (_substrcmp(*av, "firewall") == 0) { 2445116770Sluigi sysctlbyname("net.inet.ip.fw.enable", NULL, 0, 2446116770Sluigi &which, sizeof(which)); 2447140271Sbrooks } else if (_substrcmp(*av, "one_pass") == 0) { 2448116770Sluigi sysctlbyname("net.inet.ip.fw.one_pass", NULL, 0, 2449116770Sluigi &which, sizeof(which)); 2450140271Sbrooks } else if (_substrcmp(*av, "debug") == 0) { 2451116770Sluigi sysctlbyname("net.inet.ip.fw.debug", NULL, 0, 2452116770Sluigi &which, sizeof(which)); 2453140271Sbrooks } else if (_substrcmp(*av, "verbose") == 0) { 2454116770Sluigi sysctlbyname("net.inet.ip.fw.verbose", NULL, 0, 2455116770Sluigi &which, sizeof(which)); 2456140271Sbrooks } else if (_substrcmp(*av, "dyn_keepalive") == 0) { 2457116770Sluigi sysctlbyname("net.inet.ip.fw.dyn_keepalive", NULL, 0, 2458116770Sluigi &which, sizeof(which)); 2459140271Sbrooks } else if (_substrcmp(*av, "altq") == 0) { 2460136071Sgreen altq_set_enabled(which); 2461109126Sdillon } else { 2462109126Sdillon warnx("unrecognize enable/disable keyword: %s\n", *av); 2463109126Sdillon } 2464109126Sdillon} 2465109126Sdillon 2466109126Sdillonstatic void 2467117469Sluigilist(int ac, char *av[], int show_counters) 246898943Sluigi{ 246998943Sluigi struct ip_fw *r; 247098943Sluigi ipfw_dyn_rule *dynrules, *d; 247198943Sluigi 2472117469Sluigi#define NEXT(r) ((struct ip_fw *)((char *)r + RULESIZE(r))) 2473117469Sluigi char *lim; 2474117469Sluigi void *data = NULL; 2475112189Smaxim int bcwidth, n, nbytes, nstat, ndyn, pcwidth, width; 247698943Sluigi int exitval = EX_OK; 247798943Sluigi int lac; 247898943Sluigi char **lav; 2479117469Sluigi u_long rnum, last; 248098943Sluigi char *endptr; 248198943Sluigi int seen = 0; 248298943Sluigi 248398943Sluigi const int ocmd = do_pipe ? IP_DUMMYNET_GET : IP_FW_GET; 248498943Sluigi int nalloc = 1024; /* start somewhere... */ 248598943Sluigi 2486135036Smaxim last = 0; 2487135036Smaxim 2488117328Sluigi if (test_only) { 2489117328Sluigi fprintf(stderr, "Testing only, list disabled\n"); 2490117328Sluigi return; 2491117328Sluigi } 2492117328Sluigi 249398943Sluigi ac--; 249498943Sluigi av++; 249598943Sluigi 249698943Sluigi /* get rules or pipes from kernel, resizing array as necessary */ 249798943Sluigi nbytes = nalloc; 249898943Sluigi 249998943Sluigi while (nbytes >= nalloc) { 250098943Sluigi nalloc = nalloc * 2 + 200; 250198943Sluigi nbytes = nalloc; 250298943Sluigi if ((data = realloc(data, nbytes)) == NULL) 250398943Sluigi err(EX_OSERR, "realloc"); 2504119740Stmm if (do_cmd(ocmd, data, (uintptr_t)&nbytes) < 0) 250598943Sluigi err(EX_OSERR, "getsockopt(IP_%s_GET)", 250698943Sluigi do_pipe ? "DUMMYNET" : "FW"); 250798943Sluigi } 250898943Sluigi 250998943Sluigi if (do_pipe) { 251098943Sluigi list_pipes(data, nbytes, ac, av); 251198943Sluigi goto done; 251298943Sluigi } 251398943Sluigi 251498943Sluigi /* 251598943Sluigi * Count static rules. They have variable size so we 251698943Sluigi * need to scan the list to count them. 251798943Sluigi */ 2518117469Sluigi for (nstat = 1, r = data, lim = (char *)data + nbytes; 2519117469Sluigi r->rulenum < 65535 && (char *)r < lim; 2520117469Sluigi ++nstat, r = NEXT(r) ) 252198943Sluigi ; /* nothing */ 252298943Sluigi 252398943Sluigi /* 252498943Sluigi * Count dynamic rules. This is easier as they have 252598943Sluigi * fixed size. 252698943Sluigi */ 2527117469Sluigi r = NEXT(r); 252898943Sluigi dynrules = (ipfw_dyn_rule *)r ; 2529117469Sluigi n = (char *)r - (char *)data; 253098943Sluigi ndyn = (nbytes - n) / sizeof *dynrules; 253198943Sluigi 2532112189Smaxim /* if showing stats, figure out column widths ahead of time */ 2533112189Smaxim bcwidth = pcwidth = 0; 2534117469Sluigi if (show_counters) { 2535117469Sluigi for (n = 0, r = data; n < nstat; n++, r = NEXT(r)) { 2536112189Smaxim /* packet counter */ 2537115793Sticso width = snprintf(NULL, 0, "%llu", 2538115793Sticso align_uint64(&r->pcnt)); 2539112189Smaxim if (width > pcwidth) 2540112189Smaxim pcwidth = width; 2541112189Smaxim 2542112189Smaxim /* byte counter */ 2543115793Sticso width = snprintf(NULL, 0, "%llu", 2544115793Sticso align_uint64(&r->bcnt)); 2545112189Smaxim if (width > bcwidth) 2546112189Smaxim bcwidth = width; 2547112189Smaxim } 2548112189Smaxim } 2549112189Smaxim if (do_dynamic && ndyn) { 2550112189Smaxim for (n = 0, d = dynrules; n < ndyn; n++, d++) { 2551115793Sticso width = snprintf(NULL, 0, "%llu", 2552115793Sticso align_uint64(&d->pcnt)); 2553112189Smaxim if (width > pcwidth) 2554112189Smaxim pcwidth = width; 2555112189Smaxim 2556115793Sticso width = snprintf(NULL, 0, "%llu", 2557115793Sticso align_uint64(&d->bcnt)); 2558112189Smaxim if (width > bcwidth) 2559112189Smaxim bcwidth = width; 2560112189Smaxim } 2561112189Smaxim } 256298943Sluigi /* if no rule numbers were specified, list all rules */ 256398943Sluigi if (ac == 0) { 2564117469Sluigi for (n = 0, r = data; n < nstat; n++, r = NEXT(r) ) 2565112189Smaxim show_ipfw(r, pcwidth, bcwidth); 256698943Sluigi 256798943Sluigi if (do_dynamic && ndyn) { 256898943Sluigi printf("## Dynamic rules (%d):\n", ndyn); 256998943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) 2570112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 257198943Sluigi } 257298943Sluigi goto done; 257398943Sluigi } 257498943Sluigi 257598943Sluigi /* display specific rules requested on command line */ 257698943Sluigi 257798943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 257898943Sluigi /* convert command line rule # */ 2579117469Sluigi last = rnum = strtoul(*lav++, &endptr, 10); 2580117469Sluigi if (*endptr == '-') 2581117469Sluigi last = strtoul(endptr+1, &endptr, 10); 258298943Sluigi if (*endptr) { 258398943Sluigi exitval = EX_USAGE; 258498943Sluigi warnx("invalid rule number: %s", *(lav - 1)); 258598943Sluigi continue; 258698943Sluigi } 2587117469Sluigi for (n = seen = 0, r = data; n < nstat; n++, r = NEXT(r) ) { 2588117469Sluigi if (r->rulenum > last) 258998943Sluigi break; 2590117469Sluigi if (r->rulenum >= rnum && r->rulenum <= last) { 2591112189Smaxim show_ipfw(r, pcwidth, bcwidth); 259298943Sluigi seen = 1; 259398943Sluigi } 259498943Sluigi } 259598943Sluigi if (!seen) { 259698943Sluigi /* give precedence to other error(s) */ 259798943Sluigi if (exitval == EX_OK) 259898943Sluigi exitval = EX_UNAVAILABLE; 259998943Sluigi warnx("rule %lu does not exist", rnum); 260098943Sluigi } 260198943Sluigi } 260298943Sluigi 260398943Sluigi if (do_dynamic && ndyn) { 260498943Sluigi printf("## Dynamic rules:\n"); 260598943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 2606145246Sbrooks last = rnum = strtoul(*lav++, &endptr, 10); 2607117469Sluigi if (*endptr == '-') 2608117469Sluigi last = strtoul(endptr+1, &endptr, 10); 260998943Sluigi if (*endptr) 261098943Sluigi /* already warned */ 261198943Sluigi continue; 261298943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) { 2613115793Sticso uint16_t rulenum; 2614115793Sticso 2615115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 2616115793Sticso if (rulenum > rnum) 261798943Sluigi break; 2618117469Sluigi if (r->rulenum >= rnum && r->rulenum <= last) 2619112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 262098943Sluigi } 262198943Sluigi } 262298943Sluigi } 262398943Sluigi 262498943Sluigi ac = 0; 262598943Sluigi 262698943Sluigidone: 262798943Sluigi free(data); 262898943Sluigi 262998943Sluigi if (exitval != EX_OK) 263098943Sluigi exit(exitval); 2631117469Sluigi#undef NEXT 263298943Sluigi} 263398943Sluigi 263498943Sluigistatic void 263598943Sluigishow_usage(void) 263698943Sluigi{ 263798943Sluigi fprintf(stderr, "usage: ipfw [options]\n" 263898943Sluigi"do \"ipfw -h\" or see ipfw manpage for details\n" 263998943Sluigi); 264098943Sluigi exit(EX_USAGE); 264198943Sluigi} 264298943Sluigi 264398943Sluigistatic void 264498943Sluigihelp(void) 264598943Sluigi{ 2646117328Sluigi fprintf(stderr, 2647117328Sluigi"ipfw syntax summary (but please do read the ipfw(8) manpage):\n" 2648123495Sluigi"ipfw [-abcdefhnNqStTv] <command> where <command> is one of:\n" 2649117328Sluigi"add [num] [set N] [prob x] RULE-BODY\n" 2650117328Sluigi"{pipe|queue} N config PIPE-BODY\n" 2651117328Sluigi"[pipe|queue] {zero|delete|show} [N{,N}]\n" 2652165648Spiso"nat N config {ip IPADDR|if IFNAME|log|deny_in|same_ports|unreg_only|reset|\n" 2653165648Spiso" reverse|proxy_only|redirect_addr linkspec|\n" 2654165648Spiso" redirect_port linkspec|redirect_proto linkspec}\n" 2655117328Sluigi"set [disable N... enable N...] | move [rule] X to Y | swap X Y | show\n" 2656130281Sru"table N {add ip[/bits] [value] | delete ip[/bits] | flush | list}\n" 265798943Sluigi"\n" 2658136071Sgreen"RULE-BODY: check-state [PARAMS] | ACTION [PARAMS] ADDR [OPTION_LIST]\n" 2659149020Sbz"ACTION: check-state | allow | count | deny | unreach{,6} CODE |\n" 2660149020Sbz" skipto N | {divert|tee} PORT | forward ADDR |\n" 2661165648Spiso" pipe N | queue N | nat N\n" 2662136071Sgreen"PARAMS: [log [logamount LOGLIMIT]] [altq QUEUE_NAME]\n" 266398943Sluigi"ADDR: [ MAC dst src ether_type ] \n" 2664145246Sbrooks" [ ip from IPADDR [ PORT ] to IPADDR [ PORTLIST ] ]\n" 2665145246Sbrooks" [ ipv6|ip6 from IP6ADDR [ PORT ] to IP6ADDR [ PORTLIST ] ]\n" 2666130281Sru"IPADDR: [not] { any | me | ip/bits{x,y,z} | table(t[,v]) | IPLIST }\n" 2667145246Sbrooks"IP6ADDR: [not] { any | me | me6 | ip6/bits | IP6LIST }\n" 2668145246Sbrooks"IP6LIST: { ip6 | ip6/bits }[,IP6LIST]\n" 2669117544Sluigi"IPLIST: { ip | ip/bits | ip:mask }[,IPLIST]\n" 2670117544Sluigi"OPTION_LIST: OPTION [OPTION_LIST]\n" 2671136247Sgreen"OPTION: bridged | diverted | diverted-loopback | diverted-output |\n" 2672145246Sbrooks" {dst-ip|src-ip} IPADDR | {dst-ip6|src-ip6|dst-ipv6|src-ipv6} IP6ADDR |\n" 2673145246Sbrooks" {dst-port|src-port} LIST |\n" 2674117328Sluigi" estab | frag | {gid|uid} N | icmptypes LIST | in | out | ipid LIST |\n" 2675117328Sluigi" iplen LIST | ipoptions SPEC | ipprecedence | ipsec | iptos SPEC |\n" 2676117328Sluigi" ipttl LIST | ipversion VER | keep-state | layer2 | limit ... |\n" 2677145246Sbrooks" icmp6types LIST | ext6hdr LIST | flow-id N[,N] |\n" 2678117328Sluigi" mac ... | mac-type LIST | proto LIST | {recv|xmit|via} {IF|IPADDR} |\n" 2679117328Sluigi" setup | {tcpack|tcpseq|tcpwin} NN | tcpflags SPEC | tcpoptions SPEC |\n" 2680136075Sgreen" tcpdatalen LIST | verrevpath | versrcreach | antispoof\n" 268198943Sluigi); 268298943Sluigiexit(0); 268398943Sluigi} 268498943Sluigi 268598943Sluigi 268698943Sluigistatic int 268798943Sluigilookup_host (char *host, struct in_addr *ipaddr) 268898943Sluigi{ 268998943Sluigi struct hostent *he; 269098943Sluigi 269198943Sluigi if (!inet_aton(host, ipaddr)) { 269298943Sluigi if ((he = gethostbyname(host)) == NULL) 269398943Sluigi return(-1); 269498943Sluigi *ipaddr = *(struct in_addr *)he->h_addr_list[0]; 269598943Sluigi } 269698943Sluigi return(0); 269798943Sluigi} 269898943Sluigi 269998943Sluigi/* 270098943Sluigi * fills the addr and mask fields in the instruction as appropriate from av. 270198943Sluigi * Update length as appropriate. 270298943Sluigi * The following formats are allowed: 270398943Sluigi * me returns O_IP_*_ME 270498943Sluigi * 1.2.3.4 single IP address 270598943Sluigi * 1.2.3.4:5.6.7.8 address:mask 270698943Sluigi * 1.2.3.4/24 address/mask 270798943Sluigi * 1.2.3.4/26{1,6,5,4,23} set of addresses in a subnet 2708117328Sluigi * We can have multiple comma-separated address/mask entries. 270998943Sluigi */ 271098943Sluigistatic void 271198943Sluigifill_ip(ipfw_insn_ip *cmd, char *av) 271298943Sluigi{ 2713117328Sluigi int len = 0; 2714117328Sluigi uint32_t *d = ((ipfw_insn_u32 *)cmd)->d; 271598943Sluigi 271698943Sluigi cmd->o.len &= ~F_LEN_MASK; /* zero len */ 271798943Sluigi 2718140271Sbrooks if (_substrcmp(av, "any") == 0) 271998943Sluigi return; 272098943Sluigi 2721140271Sbrooks if (_substrcmp(av, "me") == 0) { 272298943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn); 272398943Sluigi return; 272498943Sluigi } 272598943Sluigi 2726140271Sbrooks if (strncmp(av, "table(", 6) == 0) { 2727130281Sru char *p = strchr(av + 6, ','); 2728130281Sru 2729130281Sru if (p) 2730130281Sru *p++ = '\0'; 2731130281Sru cmd->o.opcode = O_IP_DST_LOOKUP; 2732130281Sru cmd->o.arg1 = strtoul(av + 6, NULL, 0); 2733130281Sru if (p) { 2734130281Sru cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 2735130281Sru d[0] = strtoul(p, NULL, 0); 2736130281Sru } else 2737130281Sru cmd->o.len |= F_INSN_SIZE(ipfw_insn); 2738130281Sru return; 2739130281Sru } 2740130281Sru 2741117328Sluigi while (av) { 2742117328Sluigi /* 2743117328Sluigi * After the address we can have '/' or ':' indicating a mask, 2744117328Sluigi * ',' indicating another address follows, '{' indicating a 2745117328Sluigi * set of addresses of unspecified size. 2746117328Sluigi */ 2747165851Smlaier char *t = NULL, *p = strpbrk(av, "/:,{"); 2748117328Sluigi int masklen; 2749165851Smlaier char md, nd; 2750117328Sluigi 275198943Sluigi if (p) { 275298943Sluigi md = *p; 275398943Sluigi *p++ = '\0'; 2754165851Smlaier if ((t = strpbrk(p, ",{")) != NULL) { 2755165851Smlaier nd = *t; 2756165851Smlaier *t = '\0'; 2757165851Smlaier } 2758117328Sluigi } else 2759117328Sluigi md = '\0'; 276098943Sluigi 2761117328Sluigi if (lookup_host(av, (struct in_addr *)&d[0]) != 0) 276298943Sluigi errx(EX_NOHOST, "hostname ``%s'' unknown", av); 276398943Sluigi switch (md) { 276498943Sluigi case ':': 2765117328Sluigi if (!inet_aton(p, (struct in_addr *)&d[1])) 276698943Sluigi errx(EX_DATAERR, "bad netmask ``%s''", p); 276798943Sluigi break; 276898943Sluigi case '/': 2769117328Sluigi masklen = atoi(p); 2770117328Sluigi if (masklen == 0) 2771117328Sluigi d[1] = htonl(0); /* mask */ 2772117328Sluigi else if (masklen > 32) 277398943Sluigi errx(EX_DATAERR, "bad width ``%s''", p); 277498943Sluigi else 2775117328Sluigi d[1] = htonl(~0 << (32 - masklen)); 277698943Sluigi break; 2777117328Sluigi case '{': /* no mask, assume /24 and put back the '{' */ 2778117328Sluigi d[1] = htonl(~0 << (32 - 24)); 2779117328Sluigi *(--p) = md; 2780117328Sluigi break; 2781117328Sluigi 2782117328Sluigi case ',': /* single address plus continuation */ 2783117328Sluigi *(--p) = md; 2784117328Sluigi /* FALLTHROUGH */ 2785117328Sluigi case 0: /* initialization value */ 278698943Sluigi default: 2787117328Sluigi d[1] = htonl(~0); /* force /32 */ 278898943Sluigi break; 278998943Sluigi } 2790117328Sluigi d[0] &= d[1]; /* mask base address with mask */ 2791165851Smlaier if (t) 2792165851Smlaier *t = nd; 2793117328Sluigi /* find next separator */ 279498943Sluigi if (p) 2795117328Sluigi p = strpbrk(p, ",{"); 2796117328Sluigi if (p && *p == '{') { 2797117328Sluigi /* 2798117328Sluigi * We have a set of addresses. They are stored as follows: 2799117328Sluigi * arg1 is the set size (powers of 2, 2..256) 2800117328Sluigi * addr is the base address IN HOST FORMAT 2801117328Sluigi * mask.. is an array of arg1 bits (rounded up to 2802117328Sluigi * the next multiple of 32) with bits set 2803117328Sluigi * for each host in the map. 2804117328Sluigi */ 2805117328Sluigi uint32_t *map = (uint32_t *)&cmd->mask; 280698943Sluigi int low, high; 2807117577Sluigi int i = contigmask((uint8_t *)&(d[1]), 32); 280898943Sluigi 2809117328Sluigi if (len > 0) 2810117328Sluigi errx(EX_DATAERR, "address set cannot be in a list"); 2811117328Sluigi if (i < 24 || i > 31) 2812117328Sluigi errx(EX_DATAERR, "invalid set with mask %d\n", i); 2813117328Sluigi cmd->o.arg1 = 1<<(32-i); /* map length */ 2814117328Sluigi d[0] = ntohl(d[0]); /* base addr in host format */ 281598943Sluigi cmd->o.opcode = O_IP_DST_SET; /* default */ 281698943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32) + (cmd->o.arg1+31)/32; 2817101117Sluigi for (i = 0; i < (cmd->o.arg1+31)/32 ; i++) 2818117328Sluigi map[i] = 0; /* clear map */ 281998943Sluigi 2820117328Sluigi av = p + 1; 2821117328Sluigi low = d[0] & 0xff; 282298943Sluigi high = low + cmd->o.arg1 - 1; 2823117328Sluigi /* 2824117328Sluigi * Here, i stores the previous value when we specify a range 2825117328Sluigi * of addresses within a mask, e.g. 45-63. i = -1 means we 2826117328Sluigi * have no previous value. 2827117328Sluigi */ 2828116716Sluigi i = -1; /* previous value in a range */ 282998943Sluigi while (isdigit(*av)) { 283098943Sluigi char *s; 2831117328Sluigi int a = strtol(av, &s, 0); 283298943Sluigi 2833117328Sluigi if (s == av) { /* no parameter */ 2834117328Sluigi if (*av != '}') 2835117328Sluigi errx(EX_DATAERR, "set not closed\n"); 2836117328Sluigi if (i != -1) 2837117328Sluigi errx(EX_DATAERR, "incomplete range %d-", i); 2838117328Sluigi break; 2839117328Sluigi } 2840117328Sluigi if (a < low || a > high) 2841117328Sluigi errx(EX_DATAERR, "addr %d out of range [%d-%d]\n", 284298943Sluigi a, low, high); 284398943Sluigi a -= low; 2844116716Sluigi if (i == -1) /* no previous in range */ 2845116716Sluigi i = a; 2846116716Sluigi else { /* check that range is valid */ 2847116716Sluigi if (i > a) 2848116716Sluigi errx(EX_DATAERR, "invalid range %d-%d", 2849116716Sluigi i+low, a+low); 2850116716Sluigi if (*s == '-') 2851116716Sluigi errx(EX_DATAERR, "double '-' in range"); 2852116716Sluigi } 2853116716Sluigi for (; i <= a; i++) 2854117328Sluigi map[i/32] |= 1<<(i & 31); 2855116716Sluigi i = -1; 2856116716Sluigi if (*s == '-') 2857116716Sluigi i = a; 2858117328Sluigi else if (*s == '}') 2859116716Sluigi break; 286098943Sluigi av = s+1; 286198943Sluigi } 286298943Sluigi return; 286398943Sluigi } 2864117328Sluigi av = p; 2865117328Sluigi if (av) /* then *av must be a ',' */ 2866117328Sluigi av++; 286798943Sluigi 2868117328Sluigi /* Check this entry */ 2869117328Sluigi if (d[1] == 0) { /* "any", specified as x.x.x.x/0 */ 2870117328Sluigi /* 2871117328Sluigi * 'any' turns the entire list into a NOP. 2872117328Sluigi * 'not any' never matches, so it is removed from the 2873117328Sluigi * list unless it is the only item, in which case we 2874117328Sluigi * report an error. 2875117328Sluigi */ 2876117328Sluigi if (cmd->o.len & F_NOT) { /* "not any" never matches */ 2877117328Sluigi if (av == NULL && len == 0) /* only this entry */ 2878117328Sluigi errx(EX_DATAERR, "not any never matches"); 2879117328Sluigi } 2880117328Sluigi /* else do nothing and skip this entry */ 2881128067Smaxim return; 2882117328Sluigi } 2883117328Sluigi /* A single IP can be stored in an optimized format */ 2884117328Sluigi if (d[1] == IP_MASK_ALL && av == NULL && len == 0) { 288598943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 2886117328Sluigi return; 2887117328Sluigi } 2888117328Sluigi len += 2; /* two words... */ 2889117328Sluigi d += 2; 2890117328Sluigi } /* end while */ 2891162363Sjhay if (len + 1 > F_LEN_MASK) 2892162363Sjhay errx(EX_DATAERR, "address list too long"); 2893117328Sluigi cmd->o.len |= len+1; 289498943Sluigi} 289598943Sluigi 289698943Sluigi 2897145246Sbrooks/* Try to find ipv6 address by hostname */ 2898145246Sbrooksstatic int 2899145246Sbrookslookup_host6 (char *host, struct in6_addr *ip6addr) 2900145246Sbrooks{ 2901145246Sbrooks struct hostent *he; 2902145246Sbrooks 2903145246Sbrooks if (!inet_pton(AF_INET6, host, ip6addr)) { 2904145246Sbrooks if ((he = gethostbyname2(host, AF_INET6)) == NULL) 2905145246Sbrooks return(-1); 2906145246Sbrooks memcpy(ip6addr, he->h_addr_list[0], sizeof( struct in6_addr)); 2907145246Sbrooks } 2908145246Sbrooks return(0); 2909145246Sbrooks} 2910145246Sbrooks 2911145246Sbrooks 2912145246Sbrooks/* n2mask sets n bits of the mask */ 2913145246Sbrooksstatic void 2914145246Sbrooksn2mask(struct in6_addr *mask, int n) 2915145246Sbrooks{ 2916145246Sbrooks static int minimask[9] = 2917145246Sbrooks { 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff }; 2918145246Sbrooks u_char *p; 2919145246Sbrooks 2920145246Sbrooks memset(mask, 0, sizeof(struct in6_addr)); 2921145246Sbrooks p = (u_char *) mask; 2922145246Sbrooks for (; n > 0; p++, n -= 8) { 2923145246Sbrooks if (n >= 8) 2924145246Sbrooks *p = 0xff; 2925145246Sbrooks else 2926145246Sbrooks *p = minimask[n]; 2927145246Sbrooks } 2928145246Sbrooks return; 2929145246Sbrooks} 2930145246Sbrooks 2931145246Sbrooks 293298943Sluigi/* 2933145246Sbrooks * fill the addr and mask fields in the instruction as appropriate from av. 2934145246Sbrooks * Update length as appropriate. 2935145246Sbrooks * The following formats are allowed: 2936145246Sbrooks * any matches any IP6. Actually returns an empty instruction. 2937145246Sbrooks * me returns O_IP6_*_ME 2938145246Sbrooks * 2939145246Sbrooks * 03f1::234:123:0342 single IP6 addres 2940145246Sbrooks * 03f1::234:123:0342/24 address/mask 2941145246Sbrooks * 03f1::234:123:0342/24,03f1::234:123:0343/ List of address 2942145246Sbrooks * 2943145246Sbrooks * Set of address (as in ipv6) not supported because ipv6 address 2944145246Sbrooks * are typically random past the initial prefix. 2945145246Sbrooks * Return 1 on success, 0 on failure. 2946145246Sbrooks */ 2947145246Sbrooksstatic int 2948145246Sbrooksfill_ip6(ipfw_insn_ip6 *cmd, char *av) 2949145246Sbrooks{ 2950145246Sbrooks int len = 0; 2951145246Sbrooks struct in6_addr *d = &(cmd->addr6); 2952145246Sbrooks /* 2953145246Sbrooks * Needed for multiple address. 2954145246Sbrooks * Note d[1] points to struct in6_add r mask6 of cmd 2955145246Sbrooks */ 2956145246Sbrooks 2957145246Sbrooks cmd->o.len &= ~F_LEN_MASK; /* zero len */ 2958145246Sbrooks 2959145246Sbrooks if (strcmp(av, "any") == 0) 2960145246Sbrooks return (1); 2961145246Sbrooks 2962145246Sbrooks 2963145246Sbrooks if (strcmp(av, "me") == 0) { /* Set the data for "me" opt*/ 2964145246Sbrooks cmd->o.len |= F_INSN_SIZE(ipfw_insn); 2965145246Sbrooks return (1); 2966145246Sbrooks } 2967145246Sbrooks 2968145246Sbrooks if (strcmp(av, "me6") == 0) { /* Set the data for "me" opt*/ 2969145246Sbrooks cmd->o.len |= F_INSN_SIZE(ipfw_insn); 2970145246Sbrooks return (1); 2971145246Sbrooks } 2972145246Sbrooks 2973145246Sbrooks av = strdup(av); 2974145246Sbrooks while (av) { 2975145246Sbrooks /* 2976145246Sbrooks * After the address we can have '/' indicating a mask, 2977145246Sbrooks * or ',' indicating another address follows. 2978145246Sbrooks */ 2979145246Sbrooks 2980145246Sbrooks char *p; 2981145246Sbrooks int masklen; 2982145246Sbrooks char md = '\0'; 2983145246Sbrooks 2984145246Sbrooks if ((p = strpbrk(av, "/,")) ) { 2985145246Sbrooks md = *p; /* save the separator */ 2986145246Sbrooks *p = '\0'; /* terminate address string */ 2987145246Sbrooks p++; /* and skip past it */ 2988145246Sbrooks } 2989145246Sbrooks /* now p points to NULL, mask or next entry */ 2990145246Sbrooks 2991145246Sbrooks /* lookup stores address in *d as a side effect */ 2992145246Sbrooks if (lookup_host6(av, d) != 0) { 2993145246Sbrooks /* XXX: failed. Free memory and go */ 2994145246Sbrooks errx(EX_DATAERR, "bad address \"%s\"", av); 2995145246Sbrooks } 2996145246Sbrooks /* next, look at the mask, if any */ 2997145246Sbrooks masklen = (md == '/') ? atoi(p) : 128; 2998145246Sbrooks if (masklen > 128 || masklen < 0) 2999145246Sbrooks errx(EX_DATAERR, "bad width \"%s\''", p); 3000145246Sbrooks else 3001145246Sbrooks n2mask(&d[1], masklen); 3002145246Sbrooks 3003145246Sbrooks APPLY_MASK(d, &d[1]) /* mask base address with mask */ 3004145246Sbrooks 3005145246Sbrooks /* find next separator */ 3006145246Sbrooks 3007145246Sbrooks if (md == '/') { /* find separator past the mask */ 3008145246Sbrooks p = strpbrk(p, ","); 3009145246Sbrooks if (p != NULL) 3010145246Sbrooks p++; 3011145246Sbrooks } 3012145246Sbrooks av = p; 3013145246Sbrooks 3014145246Sbrooks /* Check this entry */ 3015145246Sbrooks if (masklen == 0) { 3016145246Sbrooks /* 3017145246Sbrooks * 'any' turns the entire list into a NOP. 3018145246Sbrooks * 'not any' never matches, so it is removed from the 3019145246Sbrooks * list unless it is the only item, in which case we 3020145246Sbrooks * report an error. 3021145246Sbrooks */ 3022145246Sbrooks if (cmd->o.len & F_NOT && av == NULL && len == 0) 3023145246Sbrooks errx(EX_DATAERR, "not any never matches"); 3024145246Sbrooks continue; 3025145246Sbrooks } 3026145246Sbrooks 3027145246Sbrooks /* 3028145246Sbrooks * A single IP can be stored alone 3029145246Sbrooks */ 3030145246Sbrooks if (masklen == 128 && av == NULL && len == 0) { 3031145246Sbrooks len = F_INSN_SIZE(struct in6_addr); 3032145246Sbrooks break; 3033145246Sbrooks } 3034145246Sbrooks 3035145246Sbrooks /* Update length and pointer to arguments */ 3036145246Sbrooks len += F_INSN_SIZE(struct in6_addr)*2; 3037145246Sbrooks d += 2; 3038145246Sbrooks } /* end while */ 3039145246Sbrooks 3040145246Sbrooks /* 3041145246Sbrooks * Total length of the command, remember that 1 is the size of 3042145246Sbrooks * the base command. 3043145246Sbrooks */ 3044162363Sjhay if (len + 1 > F_LEN_MASK) 3045162363Sjhay errx(EX_DATAERR, "address list too long"); 3046145246Sbrooks cmd->o.len |= len+1; 3047145246Sbrooks free(av); 3048145246Sbrooks return (1); 3049145246Sbrooks} 3050145246Sbrooks 3051145246Sbrooks/* 3052145246Sbrooks * fills command for ipv6 flow-id filtering 3053145246Sbrooks * note that the 20 bit flow number is stored in a array of u_int32_t 3054145246Sbrooks * it's supported lists of flow-id, so in the o.arg1 we store how many 3055145246Sbrooks * additional flow-id we want to filter, the basic is 1 3056145246Sbrooks */ 3057145246Sbrooksvoid 3058145246Sbrooksfill_flow6( ipfw_insn_u32 *cmd, char *av ) 3059145246Sbrooks{ 3060145246Sbrooks u_int32_t type; /* Current flow number */ 3061145246Sbrooks u_int16_t nflow = 0; /* Current flow index */ 3062145246Sbrooks char *s = av; 3063145246Sbrooks cmd->d[0] = 0; /* Initializing the base number*/ 3064145246Sbrooks 3065145246Sbrooks while (s) { 3066145246Sbrooks av = strsep( &s, ",") ; 3067145246Sbrooks type = strtoul(av, &av, 0); 3068145246Sbrooks if (*av != ',' && *av != '\0') 3069145246Sbrooks errx(EX_DATAERR, "invalid ipv6 flow number %s", av); 3070145246Sbrooks if (type > 0xfffff) 3071145246Sbrooks errx(EX_DATAERR, "flow number out of range %s", av); 3072145246Sbrooks cmd->d[nflow] |= type; 3073145246Sbrooks nflow++; 3074145246Sbrooks } 3075145246Sbrooks if( nflow > 0 ) { 3076145246Sbrooks cmd->o.opcode = O_FLOW6ID; 3077145246Sbrooks cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32) + nflow; 3078145246Sbrooks cmd->o.arg1 = nflow; 3079145246Sbrooks } 3080145246Sbrooks else { 3081145246Sbrooks errx(EX_DATAERR, "invalid ipv6 flow number %s", av); 3082145246Sbrooks } 3083145246Sbrooks} 3084145246Sbrooks 3085145246Sbrooksstatic ipfw_insn * 3086145246Sbrooksadd_srcip6(ipfw_insn *cmd, char *av) 3087145246Sbrooks{ 3088145246Sbrooks 3089145246Sbrooks fill_ip6((ipfw_insn_ip6 *)cmd, av); 3090145246Sbrooks if (F_LEN(cmd) == 0) /* any */ 3091145246Sbrooks ; 3092145246Sbrooks if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) { /* "me" */ 3093145246Sbrooks cmd->opcode = O_IP6_SRC_ME; 3094145246Sbrooks } else if (F_LEN(cmd) == 3095145246Sbrooks (F_INSN_SIZE(struct in6_addr) + F_INSN_SIZE(ipfw_insn))) { 3096145246Sbrooks /* single IP, no mask*/ 3097145246Sbrooks cmd->opcode = O_IP6_SRC; 3098145246Sbrooks } else { /* addr/mask opt */ 3099145246Sbrooks cmd->opcode = O_IP6_SRC_MASK; 3100145246Sbrooks } 3101145246Sbrooks return cmd; 3102145246Sbrooks} 3103145246Sbrooks 3104145246Sbrooksstatic ipfw_insn * 3105145246Sbrooksadd_dstip6(ipfw_insn *cmd, char *av) 3106145246Sbrooks{ 3107145246Sbrooks 3108145246Sbrooks fill_ip6((ipfw_insn_ip6 *)cmd, av); 3109145246Sbrooks if (F_LEN(cmd) == 0) /* any */ 3110145246Sbrooks ; 3111145246Sbrooks if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) { /* "me" */ 3112145246Sbrooks cmd->opcode = O_IP6_DST_ME; 3113145246Sbrooks } else if (F_LEN(cmd) == 3114145246Sbrooks (F_INSN_SIZE(struct in6_addr) + F_INSN_SIZE(ipfw_insn))) { 3115145246Sbrooks /* single IP, no mask*/ 3116145246Sbrooks cmd->opcode = O_IP6_DST; 3117145246Sbrooks } else { /* addr/mask opt */ 3118145246Sbrooks cmd->opcode = O_IP6_DST_MASK; 3119145246Sbrooks } 3120145246Sbrooks return cmd; 3121145246Sbrooks} 3122145246Sbrooks 3123145246Sbrooks 3124145246Sbrooks/* 312598943Sluigi * helper function to process a set of flags and set bits in the 312698943Sluigi * appropriate masks. 312798943Sluigi */ 312898943Sluigistatic void 312998943Sluigifill_flags(ipfw_insn *cmd, enum ipfw_opcodes opcode, 313098943Sluigi struct _s_x *flags, char *p) 313198943Sluigi{ 3132117328Sluigi uint8_t set=0, clear=0; 313398943Sluigi 313498943Sluigi while (p && *p) { 313598943Sluigi char *q; /* points to the separator */ 313698943Sluigi int val; 3137117328Sluigi uint8_t *which; /* mask we are working on */ 313898943Sluigi 313998943Sluigi if (*p == '!') { 314098943Sluigi p++; 314198943Sluigi which = &clear; 314298943Sluigi } else 314398943Sluigi which = &set; 314498943Sluigi q = strchr(p, ','); 314598943Sluigi if (q) 314698943Sluigi *q++ = '\0'; 314798943Sluigi val = match_token(flags, p); 314898943Sluigi if (val <= 0) 314998943Sluigi errx(EX_DATAERR, "invalid flag %s", p); 3150117328Sluigi *which |= (uint8_t)val; 315198943Sluigi p = q; 315298943Sluigi } 315398943Sluigi cmd->opcode = opcode; 315498943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | 1; 315598943Sluigi cmd->arg1 = (set & 0xff) | ( (clear & 0xff) << 8); 315698943Sluigi} 315798943Sluigi 315898943Sluigi 315998943Sluigistatic void 316098943Sluigidelete(int ac, char *av[]) 316198943Sluigi{ 3162117328Sluigi uint32_t rulenum; 3163117469Sluigi struct dn_pipe p; 316498943Sluigi int i; 316598943Sluigi int exitval = EX_OK; 3166101628Sluigi int do_set = 0; 316798943Sluigi 3168117469Sluigi memset(&p, 0, sizeof p); 316998943Sluigi 317098943Sluigi av++; ac--; 3171130013Scsjp NEED1("missing rule specification"); 3172140271Sbrooks if (ac > 0 && _substrcmp(*av, "set") == 0) { 3173101978Sluigi do_set = 1; /* delete set */ 3174101628Sluigi ac--; av++; 3175101978Sluigi } 317698943Sluigi 317798943Sluigi /* Rule number */ 317898943Sluigi while (ac && isdigit(**av)) { 317998943Sluigi i = atoi(*av); av++; ac--; 3180165648Spiso if (do_nat) { 3181165648Spiso exitval = do_cmd(IP_FW_NAT_DEL, &i, sizeof i); 3182165648Spiso if (exitval) { 3183165648Spiso exitval = EX_UNAVAILABLE; 3184165648Spiso warn("rule %u not available", i); 3185165648Spiso } 3186165648Spiso } else if (do_pipe) { 318798943Sluigi if (do_pipe == 1) 3188117469Sluigi p.pipe_nr = i; 318998943Sluigi else 3190117469Sluigi p.fs.fs_nr = i; 3191117469Sluigi i = do_cmd(IP_DUMMYNET_DEL, &p, sizeof p); 319298943Sluigi if (i) { 319398943Sluigi exitval = 1; 319498943Sluigi warn("rule %u: setsockopt(IP_DUMMYNET_DEL)", 3195117469Sluigi do_pipe == 1 ? p.pipe_nr : p.fs.fs_nr); 319698943Sluigi } 319798943Sluigi } else { 3198101978Sluigi rulenum = (i & 0xffff) | (do_set << 24); 3199117328Sluigi i = do_cmd(IP_FW_DEL, &rulenum, sizeof rulenum); 320098943Sluigi if (i) { 320198943Sluigi exitval = EX_UNAVAILABLE; 320298943Sluigi warn("rule %u: setsockopt(IP_FW_DEL)", 320398943Sluigi rulenum); 320498943Sluigi } 320598943Sluigi } 320698943Sluigi } 320798943Sluigi if (exitval != EX_OK) 320898943Sluigi exit(exitval); 320998943Sluigi} 321098943Sluigi 321198943Sluigi 321298943Sluigi/* 321398943Sluigi * fill the interface structure. We do not check the name as we can 321498943Sluigi * create interfaces dynamically, so checking them at insert time 321598943Sluigi * makes relatively little sense. 3216121816Sbrooks * Interface names containing '*', '?', or '[' are assumed to be shell 3217121816Sbrooks * patterns which match interfaces. 321898943Sluigi */ 321998943Sluigistatic void 322098943Sluigifill_iface(ipfw_insn_if *cmd, char *arg) 322198943Sluigi{ 322298943Sluigi cmd->name[0] = '\0'; 322398943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_if); 322498943Sluigi 322598943Sluigi /* Parse the interface or address */ 3226140271Sbrooks if (strcmp(arg, "any") == 0) 322798943Sluigi cmd->o.len = 0; /* effectively ignore this command */ 322898943Sluigi else if (!isdigit(*arg)) { 3229121816Sbrooks strlcpy(cmd->name, arg, sizeof(cmd->name)); 3230121816Sbrooks cmd->p.glob = strpbrk(arg, "*?[") != NULL ? 1 : 0; 323198943Sluigi } else if (!inet_aton(arg, &cmd->p.ip)) 323298943Sluigi errx(EX_DATAERR, "bad ip address ``%s''", arg); 323398943Sluigi} 323498943Sluigi 3235165648Spiso/* 3236165648Spiso * Search for interface with name "ifn", and fill n accordingly: 3237165648Spiso * 3238165648Spiso * n->ip ip address of interface "ifn" 3239165648Spiso * n->if_name copy of interface name "ifn" 3240165648Spiso */ 324198943Sluigistatic void 3242165648Spisoset_addr_dynamic(const char *ifn, struct cfg_nat *n) 3243165648Spiso{ 3244165648Spiso size_t needed; 3245165648Spiso int mib[6]; 3246165648Spiso char *buf, *lim, *next; 3247165648Spiso struct if_msghdr *ifm; 3248165648Spiso struct ifa_msghdr *ifam; 3249165648Spiso struct sockaddr_dl *sdl; 3250165648Spiso struct sockaddr_in *sin; 3251165648Spiso int ifIndex, ifMTU; 3252165648Spiso 3253165648Spiso mib[0] = CTL_NET; 3254165648Spiso mib[1] = PF_ROUTE; 3255165648Spiso mib[2] = 0; 3256165648Spiso mib[3] = AF_INET; 3257165648Spiso mib[4] = NET_RT_IFLIST; 3258165648Spiso mib[5] = 0; 3259165648Spiso/* 3260165648Spiso * Get interface data. 3261165648Spiso */ 3262165648Spiso if (sysctl(mib, 6, NULL, &needed, NULL, 0) == -1) 3263165648Spiso err(1, "iflist-sysctl-estimate"); 3264165648Spiso if ((buf = malloc(needed)) == NULL) 3265165648Spiso errx(1, "malloc failed"); 3266165648Spiso if (sysctl(mib, 6, buf, &needed, NULL, 0) == -1) 3267165648Spiso err(1, "iflist-sysctl-get"); 3268165648Spiso lim = buf + needed; 3269165648Spiso/* 3270165648Spiso * Loop through interfaces until one with 3271165648Spiso * given name is found. This is done to 3272165648Spiso * find correct interface index for routing 3273165648Spiso * message processing. 3274165648Spiso */ 3275165648Spiso ifIndex = 0; 3276165648Spiso next = buf; 3277165648Spiso while (next < lim) { 3278165648Spiso ifm = (struct if_msghdr *)next; 3279165648Spiso next += ifm->ifm_msglen; 3280165648Spiso if (ifm->ifm_version != RTM_VERSION) { 3281165648Spiso if (verbose) 3282165648Spiso warnx("routing message version %d " 3283165648Spiso "not understood", ifm->ifm_version); 3284165648Spiso continue; 3285165648Spiso } 3286165648Spiso if (ifm->ifm_type == RTM_IFINFO) { 3287165648Spiso sdl = (struct sockaddr_dl *)(ifm + 1); 3288165648Spiso if (strlen(ifn) == sdl->sdl_nlen && 3289165648Spiso strncmp(ifn, sdl->sdl_data, sdl->sdl_nlen) == 0) { 3290165648Spiso ifIndex = ifm->ifm_index; 3291165648Spiso ifMTU = ifm->ifm_data.ifi_mtu; 3292165648Spiso break; 3293165648Spiso } 3294165648Spiso } 3295165648Spiso } 3296165648Spiso if (!ifIndex) 3297165648Spiso errx(1, "unknown interface name %s", ifn); 3298165648Spiso/* 3299165648Spiso * Get interface address. 3300165648Spiso */ 3301165648Spiso sin = NULL; 3302165648Spiso while (next < lim) { 3303165648Spiso ifam = (struct ifa_msghdr *)next; 3304165648Spiso next += ifam->ifam_msglen; 3305165648Spiso if (ifam->ifam_version != RTM_VERSION) { 3306165648Spiso if (verbose) 3307165648Spiso warnx("routing message version %d " 3308165648Spiso "not understood", ifam->ifam_version); 3309165648Spiso continue; 3310165648Spiso } 3311165648Spiso if (ifam->ifam_type != RTM_NEWADDR) 3312165648Spiso break; 3313165648Spiso if (ifam->ifam_addrs & RTA_IFA) { 3314165648Spiso int i; 3315165648Spiso char *cp = (char *)(ifam + 1); 3316165648Spiso 3317165648Spiso for (i = 1; i < RTA_IFA; i <<= 1) { 3318165648Spiso if (ifam->ifam_addrs & i) 3319165648Spiso cp += SA_SIZE((struct sockaddr *)cp); 3320165648Spiso } 3321165648Spiso if (((struct sockaddr *)cp)->sa_family == AF_INET) { 3322165648Spiso sin = (struct sockaddr_in *)cp; 3323165648Spiso break; 3324165648Spiso } 3325165648Spiso } 3326165648Spiso } 3327165648Spiso if (sin == NULL) 3328165648Spiso errx(1, "%s: cannot get interface address", ifn); 3329165648Spiso 3330165648Spiso n->ip = sin->sin_addr; 3331165648Spiso strncpy(n->if_name, ifn, IF_NAMESIZE); 3332165648Spiso 3333165648Spiso free(buf); 3334165648Spiso} 3335165648Spiso 3336165648Spiso/* 3337165648Spiso * XXX - The following functions, macros and definitions come from natd.c: 3338165648Spiso * it would be better to move them outside natd.c, in a file 3339165648Spiso * (redirect_support.[ch]?) shared by ipfw and natd, but for now i can live 3340165648Spiso * with it. 3341165648Spiso */ 3342165648Spiso 3343165648Spiso/* 3344165648Spiso * Definition of a port range, and macros to deal with values. 3345165648Spiso * FORMAT: HI 16-bits == first port in range, 0 == all ports. 3346165648Spiso * LO 16-bits == number of ports in range 3347165648Spiso * NOTES: - Port values are not stored in network byte order. 3348165648Spiso */ 3349165648Spiso 3350165648Spiso#define port_range u_long 3351165648Spiso 3352165648Spiso#define GETLOPORT(x) ((x) >> 0x10) 3353165648Spiso#define GETNUMPORTS(x) ((x) & 0x0000ffff) 3354165648Spiso#define GETHIPORT(x) (GETLOPORT((x)) + GETNUMPORTS((x))) 3355165648Spiso 3356165648Spiso/* Set y to be the low-port value in port_range variable x. */ 3357165648Spiso#define SETLOPORT(x,y) ((x) = ((x) & 0x0000ffff) | ((y) << 0x10)) 3358165648Spiso 3359165648Spiso/* Set y to be the number of ports in port_range variable x. */ 3360165648Spiso#define SETNUMPORTS(x,y) ((x) = ((x) & 0xffff0000) | (y)) 3361165648Spiso 3362165648Spisostatic void 3363165648SpisoStrToAddr (const char* str, struct in_addr* addr) 3364165648Spiso{ 3365165648Spiso struct hostent* hp; 3366165648Spiso 3367165648Spiso if (inet_aton (str, addr)) 3368165648Spiso return; 3369165648Spiso 3370165648Spiso hp = gethostbyname (str); 3371165648Spiso if (!hp) 3372165648Spiso errx (1, "unknown host %s", str); 3373165648Spiso 3374165648Spiso memcpy (addr, hp->h_addr, sizeof (struct in_addr)); 3375165648Spiso} 3376165648Spiso 3377165648Spisostatic int 3378165648SpisoStrToPortRange (const char* str, const char* proto, port_range *portRange) 3379165648Spiso{ 3380165648Spiso char* sep; 3381165648Spiso struct servent* sp; 3382165648Spiso char* end; 3383165648Spiso u_short loPort; 3384165648Spiso u_short hiPort; 3385165648Spiso 3386165648Spiso /* First see if this is a service, return corresponding port if so. */ 3387165648Spiso sp = getservbyname (str,proto); 3388165648Spiso if (sp) { 3389165648Spiso SETLOPORT(*portRange, ntohs(sp->s_port)); 3390165648Spiso SETNUMPORTS(*portRange, 1); 3391165648Spiso return 0; 3392165648Spiso } 3393165648Spiso 3394165648Spiso /* Not a service, see if it's a single port or port range. */ 3395165648Spiso sep = strchr (str, '-'); 3396165648Spiso if (sep == NULL) { 3397165648Spiso SETLOPORT(*portRange, strtol(str, &end, 10)); 3398165648Spiso if (end != str) { 3399165648Spiso /* Single port. */ 3400165648Spiso SETNUMPORTS(*portRange, 1); 3401165648Spiso return 0; 3402165648Spiso } 3403165648Spiso 3404165648Spiso /* Error in port range field. */ 3405165648Spiso errx (EX_DATAERR, "%s/%s: unknown service", str, proto); 3406165648Spiso } 3407165648Spiso 3408165648Spiso /* Port range, get the values and sanity check. */ 3409165648Spiso sscanf (str, "%hu-%hu", &loPort, &hiPort); 3410165648Spiso SETLOPORT(*portRange, loPort); 3411165648Spiso SETNUMPORTS(*portRange, 0); /* Error by default */ 3412165648Spiso if (loPort <= hiPort) 3413165648Spiso SETNUMPORTS(*portRange, hiPort - loPort + 1); 3414165648Spiso 3415165648Spiso if (GETNUMPORTS(*portRange) == 0) 3416165648Spiso errx (EX_DATAERR, "invalid port range %s", str); 3417165648Spiso 3418165648Spiso return 0; 3419165648Spiso} 3420165648Spiso 3421165648Spisostatic int 3422165648SpisoStrToProto (const char* str) 3423165648Spiso{ 3424165648Spiso if (!strcmp (str, "tcp")) 3425165648Spiso return IPPROTO_TCP; 3426165648Spiso 3427165648Spiso if (!strcmp (str, "udp")) 3428165648Spiso return IPPROTO_UDP; 3429165648Spiso 3430165648Spiso errx (EX_DATAERR, "unknown protocol %s. Expected tcp or udp", str); 3431165648Spiso} 3432165648Spiso 3433165648Spisostatic int 3434165648SpisoStrToAddrAndPortRange (const char* str, struct in_addr* addr, char* proto, 3435165648Spiso port_range *portRange) 3436165648Spiso{ 3437165648Spiso char* ptr; 3438165648Spiso 3439165648Spiso ptr = strchr (str, ':'); 3440165648Spiso if (!ptr) 3441165648Spiso errx (EX_DATAERR, "%s is missing port number", str); 3442165648Spiso 3443165648Spiso *ptr = '\0'; 3444165648Spiso ++ptr; 3445165648Spiso 3446165648Spiso StrToAddr (str, addr); 3447165648Spiso return StrToPortRange (ptr, proto, portRange); 3448165648Spiso} 3449165648Spiso 3450165648Spiso/* End of stuff taken from natd.c. */ 3451165648Spiso 3452165648Spiso#define INC_ARGCV() do { \ 3453165648Spiso (*_av)++; \ 3454165648Spiso (*_ac)--; \ 3455165648Spiso av = *_av; \ 3456165648Spiso ac = *_ac; \ 3457165648Spiso} while(0) 3458165648Spiso 3459165648Spiso/* 3460165648Spiso * The next 3 functions add support for the addr, port and proto redirect and 3461165648Spiso * their logic is loosely based on SetupAddressRedirect(), SetupPortRedirect() 3462165648Spiso * and SetupProtoRedirect() from natd.c. 3463165648Spiso * 3464165648Spiso * Every setup_* function fills at least one redirect entry 3465165648Spiso * (struct cfg_redir) and zero or more server pool entry (struct cfg_spool) 3466165648Spiso * in buf. 3467165648Spiso * 3468165648Spiso * The format of data in buf is: 3469165648Spiso * 3470165648Spiso * 3471165648Spiso * cfg_nat cfg_redir cfg_spool ...... cfg_spool 3472165648Spiso * 3473165648Spiso * ------------------------------------- ------------ 3474165648Spiso * | | .....X ... | | | | ..... 3475165648Spiso * ------------------------------------- ...... ------------ 3476165648Spiso * ^ 3477165648Spiso * spool_cnt n=0 ...... n=(X-1) 3478165648Spiso * 3479165648Spiso * len points to the amount of available space in buf 3480165648Spiso * space counts the memory consumed by every function 3481165648Spiso * 3482165648Spiso * XXX - Every function get all the argv params so it 3483165648Spiso * has to check, in optional parameters, that the next 3484165648Spiso * args is a valid option for the redir entry and not 3485165648Spiso * another token. Only redir_port and redir_proto are 3486165648Spiso * affected by this. 3487165648Spiso */ 3488165648Spiso 3489165648Spisostatic int 3490165648Spisosetup_redir_addr(char *spool_buf, int len, 3491165648Spiso int *_ac, char ***_av) 3492165648Spiso{ 3493165648Spiso char **av, *sep; /* Token separator. */ 3494165648Spiso /* Temporary buffer used to hold server pool ip's. */ 3495165648Spiso char tmp_spool_buf[NAT_BUF_LEN]; 3496165648Spiso int ac, i, space, lsnat; 3497165648Spiso struct cfg_redir *r; 3498165648Spiso struct cfg_spool *tmp; 3499165648Spiso 3500165648Spiso av = *_av; 3501165648Spiso ac = *_ac; 3502165648Spiso space = 0; 3503165648Spiso lsnat = 0; 3504165648Spiso if (len >= SOF_REDIR) { 3505165648Spiso r = (struct cfg_redir *)spool_buf; 3506165648Spiso /* Skip cfg_redir at beginning of buf. */ 3507165648Spiso spool_buf = &spool_buf[SOF_REDIR]; 3508165648Spiso space = SOF_REDIR; 3509165648Spiso len -= SOF_REDIR; 3510165648Spiso } else 3511165648Spiso goto nospace; 3512165648Spiso r->mode = REDIR_ADDR; 3513165648Spiso /* Extract local address. */ 3514165648Spiso if (ac == 0) 3515165648Spiso errx(EX_DATAERR, "redirect_addr: missing local address"); 3516165648Spiso sep = strchr(*av, ','); 3517165648Spiso if (sep) { /* LSNAT redirection syntax. */ 3518165648Spiso r->laddr.s_addr = INADDR_NONE; 3519165648Spiso /* Preserve av, copy spool servers to tmp_spool_buf. */ 3520165648Spiso strncpy(tmp_spool_buf, *av, strlen(*av)+1); 3521165648Spiso lsnat = 1; 3522165648Spiso } else 3523165648Spiso StrToAddr(*av, &r->laddr); 3524165648Spiso INC_ARGCV(); 3525165648Spiso 3526165648Spiso /* Extract public address. */ 3527165648Spiso if (ac == 0) 3528165648Spiso errx(EX_DATAERR, "redirect_addr: missing public address"); 3529165648Spiso StrToAddr(*av, &r->paddr); 3530165648Spiso INC_ARGCV(); 3531165648Spiso 3532165648Spiso /* Setup LSNAT server pool. */ 3533165648Spiso if (sep) { 3534165648Spiso sep = strtok(tmp_spool_buf, ","); 3535165648Spiso while (sep != NULL) { 3536165648Spiso tmp = (struct cfg_spool *)spool_buf; 3537165648Spiso if (len < SOF_SPOOL) 3538165648Spiso goto nospace; 3539165648Spiso len -= SOF_SPOOL; 3540165648Spiso space += SOF_SPOOL; 3541165648Spiso StrToAddr(sep, &tmp->addr); 3542165648Spiso tmp->port = ~0; 3543165648Spiso r->spool_cnt++; 3544165648Spiso /* Point to the next possible cfg_spool. */ 3545165648Spiso spool_buf = &spool_buf[SOF_SPOOL]; 3546165648Spiso sep = strtok(NULL, ","); 3547165648Spiso } 3548165648Spiso } 3549165648Spiso return(space); 3550165648Spisonospace: 3551165648Spiso errx(EX_DATAERR, "redirect_addr: buf is too small\n"); 3552165648Spiso} 3553165648Spiso 3554165648Spisostatic int 3555165648Spisosetup_redir_port(char *spool_buf, int len, 3556165648Spiso int *_ac, char ***_av) 3557165648Spiso{ 3558165648Spiso char **av, *sep, *protoName; 3559165648Spiso char tmp_spool_buf[NAT_BUF_LEN]; 3560165648Spiso int ac, space, lsnat; 3561165648Spiso struct cfg_redir *r; 3562165648Spiso struct cfg_spool *tmp; 3563165648Spiso u_short numLocalPorts; 3564165648Spiso port_range portRange; 3565165648Spiso 3566165648Spiso av = *_av; 3567165648Spiso ac = *_ac; 3568165648Spiso space = 0; 3569165648Spiso lsnat = 0; 3570165648Spiso numLocalPorts = 0; 3571165648Spiso 3572165648Spiso if (len >= SOF_REDIR) { 3573165648Spiso r = (struct cfg_redir *)spool_buf; 3574165648Spiso /* Skip cfg_redir at beginning of buf. */ 3575165648Spiso spool_buf = &spool_buf[SOF_REDIR]; 3576165648Spiso space = SOF_REDIR; 3577165648Spiso len -= SOF_REDIR; 3578165648Spiso } else 3579165648Spiso goto nospace; 3580165648Spiso r->mode = REDIR_PORT; 3581165648Spiso /* 3582165648Spiso * Extract protocol. 3583165648Spiso */ 3584165648Spiso if (ac == 0) 3585165648Spiso errx (EX_DATAERR, "redirect_port: missing protocol"); 3586165648Spiso r->proto = StrToProto(*av); 3587165648Spiso protoName = *av; 3588165648Spiso INC_ARGCV(); 3589165648Spiso 3590165648Spiso /* 3591165648Spiso * Extract local address. 3592165648Spiso */ 3593165648Spiso if (ac == 0) 3594165648Spiso errx (EX_DATAERR, "redirect_port: missing local address"); 3595165648Spiso 3596165648Spiso sep = strchr(*av, ','); 3597165648Spiso /* LSNAT redirection syntax. */ 3598165648Spiso if (sep) { 3599165648Spiso r->laddr.s_addr = INADDR_NONE; 3600165648Spiso r->lport = ~0; 3601165648Spiso numLocalPorts = 1; 3602165648Spiso /* Preserve av, copy spool servers to tmp_spool_buf. */ 3603165648Spiso strncpy(tmp_spool_buf, *av, strlen(*av)+1); 3604165648Spiso lsnat = 1; 3605165648Spiso } else { 3606165648Spiso if (StrToAddrAndPortRange (*av, &r->laddr, protoName, 3607165648Spiso &portRange) != 0) 3608165648Spiso errx(EX_DATAERR, "redirect_port:" 3609165648Spiso "invalid local port range"); 3610165648Spiso 3611165648Spiso r->lport = GETLOPORT(portRange); 3612165648Spiso numLocalPorts = GETNUMPORTS(portRange); 3613165648Spiso } 3614165648Spiso INC_ARGCV(); 3615165648Spiso 3616165648Spiso /* 3617165648Spiso * Extract public port and optionally address. 3618165648Spiso */ 3619165648Spiso if (ac == 0) 3620165648Spiso errx (EX_DATAERR, "redirect_port: missing public port"); 3621165648Spiso 3622165648Spiso sep = strchr (*av, ':'); 3623165648Spiso if (sep) { 3624165648Spiso if (StrToAddrAndPortRange (*av, &r->paddr, protoName, 3625165648Spiso &portRange) != 0) 3626165648Spiso errx(EX_DATAERR, "redirect_port:" 3627165648Spiso "invalid public port range"); 3628165648Spiso } else { 3629165648Spiso r->paddr.s_addr = INADDR_ANY; 3630165648Spiso if (StrToPortRange (*av, protoName, &portRange) != 0) 3631165648Spiso errx(EX_DATAERR, "redirect_port:" 3632165648Spiso "invalid public port range"); 3633165648Spiso } 3634165648Spiso 3635165648Spiso r->pport = GETLOPORT(portRange); 3636165648Spiso r->pport_cnt = GETNUMPORTS(portRange); 3637165648Spiso INC_ARGCV(); 3638165648Spiso 3639165648Spiso /* 3640165648Spiso * Extract remote address and optionally port. 3641165648Spiso */ 3642165648Spiso /* 3643165648Spiso * NB: isalpha(**av) => we've to check that next parameter is really an 3644165648Spiso * option for this redirect entry, else stop here processing arg[cv]. 3645165648Spiso */ 3646165648Spiso if (ac != 0 && !isalpha(**av)) { 3647165648Spiso sep = strchr (*av, ':'); 3648165648Spiso if (sep) { 3649165648Spiso if (StrToAddrAndPortRange (*av, &r->raddr, protoName, 3650165648Spiso &portRange) != 0) 3651165648Spiso errx(EX_DATAERR, "redirect_port:" 3652165648Spiso "invalid remote port range"); 3653165648Spiso } else { 3654165648Spiso SETLOPORT(portRange, 0); 3655165648Spiso SETNUMPORTS(portRange, 1); 3656165648Spiso StrToAddr (*av, &r->raddr); 3657165648Spiso } 3658165648Spiso INC_ARGCV(); 3659165648Spiso } else { 3660165648Spiso SETLOPORT(portRange, 0); 3661165648Spiso SETNUMPORTS(portRange, 1); 3662165648Spiso r->raddr.s_addr = INADDR_ANY; 3663165648Spiso } 3664165648Spiso r->rport = GETLOPORT(portRange); 3665165648Spiso r->rport_cnt = GETNUMPORTS(portRange); 3666165648Spiso 3667165648Spiso /* 3668165648Spiso * Make sure port ranges match up, then add the redirect ports. 3669165648Spiso */ 3670165648Spiso if (numLocalPorts != r->pport_cnt) 3671165648Spiso errx(EX_DATAERR, "redirect_port:" 3672165648Spiso "port ranges must be equal in size"); 3673165648Spiso 3674165648Spiso /* Remote port range is allowed to be '0' which means all ports. */ 3675165648Spiso if (r->rport_cnt != numLocalPorts && 3676165648Spiso (r->rport_cnt != 1 || r->rport != 0)) 3677165648Spiso errx(EX_DATAERR, "redirect_port: remote port must" 3678165648Spiso "be 0 or equal to local port range in size"); 3679165648Spiso 3680165648Spiso /* 3681165648Spiso * Setup LSNAT server pool. 3682165648Spiso */ 3683165648Spiso if (lsnat) { 3684165648Spiso sep = strtok(tmp_spool_buf, ","); 3685165648Spiso while (sep != NULL) { 3686165648Spiso tmp = (struct cfg_spool *)spool_buf; 3687165648Spiso if (len < SOF_SPOOL) 3688165648Spiso goto nospace; 3689165648Spiso len -= SOF_SPOOL; 3690165648Spiso space += SOF_SPOOL; 3691165648Spiso if (StrToAddrAndPortRange(sep, &tmp->addr, protoName, 3692165648Spiso &portRange) != 0) 3693165648Spiso errx(EX_DATAERR, "redirect_port:" 3694165648Spiso "invalid local port range"); 3695165648Spiso if (GETNUMPORTS(portRange) != 1) 3696165648Spiso errx(EX_DATAERR, "redirect_port: local port" 3697165648Spiso "must be single in this context"); 3698165648Spiso tmp->port = GETLOPORT(portRange); 3699165648Spiso r->spool_cnt++; 3700165648Spiso /* Point to the next possible cfg_spool. */ 3701165648Spiso spool_buf = &spool_buf[SOF_SPOOL]; 3702165648Spiso sep = strtok(NULL, ","); 3703165648Spiso } 3704165648Spiso } 3705165648Spiso return (space); 3706165648Spisonospace: 3707165648Spiso errx(EX_DATAERR, "redirect_port: buf is too small\n"); 3708165648Spiso} 3709165648Spiso 3710165648Spisostatic int 3711165648Spisosetup_redir_proto(char *spool_buf, int len, 3712165648Spiso int *_ac, char ***_av) 3713165648Spiso{ 3714165648Spiso char **av; 3715165648Spiso int ac, i, space; 3716165648Spiso struct protoent *protoent; 3717165648Spiso struct cfg_redir *r; 3718165648Spiso 3719165648Spiso av = *_av; 3720165648Spiso ac = *_ac; 3721165648Spiso if (len >= SOF_REDIR) { 3722165648Spiso r = (struct cfg_redir *)spool_buf; 3723165648Spiso /* Skip cfg_redir at beginning of buf. */ 3724165648Spiso spool_buf = &spool_buf[SOF_REDIR]; 3725165648Spiso space = SOF_REDIR; 3726165648Spiso len -= SOF_REDIR; 3727165648Spiso } else 3728165648Spiso goto nospace; 3729165648Spiso r->mode = REDIR_PROTO; 3730165648Spiso /* 3731165648Spiso * Extract protocol. 3732165648Spiso */ 3733165648Spiso if (ac == 0) 3734165648Spiso errx(EX_DATAERR, "redirect_proto: missing protocol"); 3735165648Spiso 3736165648Spiso protoent = getprotobyname(*av); 3737165648Spiso if (protoent == NULL) 3738165648Spiso errx(EX_DATAERR, "redirect_proto: unknown protocol %s", *av); 3739165648Spiso else 3740165648Spiso r->proto = protoent->p_proto; 3741165648Spiso 3742165648Spiso INC_ARGCV(); 3743165648Spiso 3744165648Spiso /* 3745165648Spiso * Extract local address. 3746165648Spiso */ 3747165648Spiso if (ac == 0) 3748165648Spiso errx(EX_DATAERR, "redirect_proto: missing local address"); 3749165648Spiso else 3750165648Spiso StrToAddr(*av, &r->laddr); 3751165648Spiso 3752165648Spiso INC_ARGCV(); 3753165648Spiso 3754165648Spiso /* 3755165648Spiso * Extract optional public address. 3756165648Spiso */ 3757165648Spiso if (ac == 0) { 3758165648Spiso r->paddr.s_addr = INADDR_ANY; 3759165648Spiso r->raddr.s_addr = INADDR_ANY; 3760165648Spiso } else { 3761165648Spiso /* see above in setup_redir_port() */ 3762165648Spiso if (!isalpha(**av)) { 3763165648Spiso StrToAddr(*av, &r->paddr); 3764165648Spiso INC_ARGCV(); 3765165648Spiso 3766165648Spiso /* 3767165648Spiso * Extract optional remote address. 3768165648Spiso */ 3769165648Spiso /* see above in setup_redir_port() */ 3770165648Spiso if (ac!=0 && !isalpha(**av)) { 3771165648Spiso StrToAddr(*av, &r->raddr); 3772165648Spiso INC_ARGCV(); 3773165648Spiso } 3774165648Spiso } 3775165648Spiso } 3776165648Spiso return (space); 3777165648Spisonospace: 3778165648Spiso errx(EX_DATAERR, "redirect_proto: buf is too small\n"); 3779165648Spiso} 3780165648Spiso 3781165648Spisostatic void 3782165648Spisoshow_nat(int ac, char **av); 3783165648Spiso 3784165648Spisostatic void 3785165648Spisoprint_nat_config(char *buf) { 3786165648Spiso struct cfg_nat *n; 3787165648Spiso int i, cnt, flag, off; 3788165648Spiso struct cfg_redir *t; 3789165648Spiso struct cfg_spool *s; 3790165648Spiso struct protoent *p; 3791165648Spiso 3792165648Spiso n = (struct cfg_nat *)buf; 3793165648Spiso flag = 1; 3794165648Spiso off = sizeof(*n); 3795165648Spiso printf("ipfw nat %u config", n->id); 3796165648Spiso if (strlen(n->if_name) != 0) 3797165648Spiso printf(" if %s", n->if_name); 3798165648Spiso else if (n->ip.s_addr != 0) 3799165648Spiso printf(" ip %s", inet_ntoa(n->ip)); 3800165648Spiso while (n->mode != 0) { 3801165648Spiso if (n->mode & PKT_ALIAS_LOG) { 3802165648Spiso printf(" log"); 3803165648Spiso n->mode &= ~PKT_ALIAS_LOG; 3804165648Spiso } else if (n->mode & PKT_ALIAS_DENY_INCOMING) { 3805165648Spiso printf(" deny_in"); 3806165648Spiso n->mode &= ~PKT_ALIAS_DENY_INCOMING; 3807165648Spiso } else if (n->mode & PKT_ALIAS_SAME_PORTS) { 3808165648Spiso printf(" same_ports"); 3809165648Spiso n->mode &= ~PKT_ALIAS_SAME_PORTS; 3810165648Spiso } else if (n->mode & PKT_ALIAS_UNREGISTERED_ONLY) { 3811165648Spiso printf(" unreg_only"); 3812165648Spiso n->mode &= ~PKT_ALIAS_UNREGISTERED_ONLY; 3813165648Spiso } else if (n->mode & PKT_ALIAS_RESET_ON_ADDR_CHANGE) { 3814165648Spiso printf(" reset"); 3815165648Spiso n->mode &= ~PKT_ALIAS_RESET_ON_ADDR_CHANGE; 3816165648Spiso } else if (n->mode & PKT_ALIAS_REVERSE) { 3817165648Spiso printf(" reverse"); 3818165648Spiso n->mode &= ~PKT_ALIAS_REVERSE; 3819165648Spiso } else if (n->mode & PKT_ALIAS_PROXY_ONLY) { 3820165648Spiso printf(" proxy_only"); 3821165648Spiso n->mode &= ~PKT_ALIAS_PROXY_ONLY; 3822165648Spiso } 3823165648Spiso } 3824165648Spiso /* Print all the redirect's data configuration. */ 3825165648Spiso for (cnt = 0; cnt < n->redir_cnt; cnt++) { 3826165648Spiso t = (struct cfg_redir *)&buf[off]; 3827165648Spiso off += SOF_REDIR; 3828165648Spiso switch (t->mode) { 3829165648Spiso case REDIR_ADDR: 3830165648Spiso printf(" redirect_addr"); 3831165648Spiso if (t->spool_cnt == 0) 3832165648Spiso printf(" %s", inet_ntoa(t->laddr)); 3833165648Spiso else 3834165648Spiso for (i = 0; i < t->spool_cnt; i++) { 3835165648Spiso s = (struct cfg_spool *)&buf[off]; 3836165648Spiso if (i) 3837165648Spiso printf(","); 3838165648Spiso else 3839165648Spiso printf(" "); 3840165648Spiso printf("%s", inet_ntoa(s->addr)); 3841165648Spiso off += SOF_SPOOL; 3842165648Spiso } 3843165648Spiso printf(" %s", inet_ntoa(t->paddr)); 3844165648Spiso break; 3845165648Spiso case REDIR_PORT: 3846165648Spiso p = getprotobynumber(t->proto); 3847165648Spiso printf(" redirect_port %s ", p->p_name); 3848165648Spiso if (!t->spool_cnt) { 3849165648Spiso printf("%s:%u", inet_ntoa(t->laddr), t->lport); 3850165648Spiso if (t->pport_cnt > 1) 3851165648Spiso printf("-%u", t->lport + 3852165648Spiso t->pport_cnt - 1); 3853165648Spiso } else 3854165648Spiso for (i=0; i < t->spool_cnt; i++) { 3855165648Spiso s = (struct cfg_spool *)&buf[off]; 3856165648Spiso if (i) 3857165648Spiso printf(","); 3858165648Spiso printf("%s:%u", inet_ntoa(s->addr), 3859165648Spiso s->port); 3860165648Spiso off += SOF_SPOOL; 3861165648Spiso } 3862165648Spiso 3863165648Spiso printf(" "); 3864165648Spiso if (t->paddr.s_addr) 3865165648Spiso printf("%s:", inet_ntoa(t->paddr)); 3866165648Spiso printf("%u", t->pport); 3867165648Spiso if (!t->spool_cnt && t->pport_cnt > 1) 3868165648Spiso printf("-%u", t->pport + t->pport_cnt - 1); 3869165648Spiso 3870165648Spiso if (t->raddr.s_addr) { 3871165648Spiso printf(" %s", inet_ntoa(t->raddr)); 3872165648Spiso if (t->rport) { 3873165648Spiso printf(":%u", t->rport); 3874165648Spiso if (!t->spool_cnt && t->rport_cnt > 1) 3875165648Spiso printf("-%u", t->rport + 3876165648Spiso t->rport_cnt - 1); 3877165648Spiso } 3878165648Spiso } 3879165648Spiso break; 3880165648Spiso case REDIR_PROTO: 3881165648Spiso p = getprotobynumber(t->proto); 3882165648Spiso printf(" redirect_proto %s %s", p->p_name, 3883165648Spiso inet_ntoa(t->laddr)); 3884165648Spiso if (t->paddr.s_addr != 0) { 3885165648Spiso printf(" %s", inet_ntoa(t->paddr)); 3886165648Spiso if (t->raddr.s_addr) 3887165648Spiso printf(" %s", inet_ntoa(t->raddr)); 3888165648Spiso } 3889165648Spiso break; 3890165648Spiso default: 3891165648Spiso errx(EX_DATAERR, "unknown redir mode"); 3892165648Spiso break; 3893165648Spiso } 3894165648Spiso } 3895165648Spiso printf("\n"); 3896165648Spiso} 3897165648Spiso 3898165648Spisostatic void 3899165648Spisoconfig_nat(int ac, char **av) 3900165648Spiso{ 3901165648Spiso struct cfg_nat *n; /* Nat instance configuration. */ 3902165648Spiso struct in_addr ip; 3903165648Spiso int i, len, off, tok; 3904165648Spiso char *id, buf[NAT_BUF_LEN]; /* Buffer for serialized data. */ 3905165648Spiso 3906165648Spiso len = NAT_BUF_LEN; 3907165648Spiso /* Offset in buf: save space for n at the beginning. */ 3908165648Spiso off = sizeof(*n); 3909165648Spiso memset(buf, 0, sizeof(buf)); 3910165648Spiso n = (struct cfg_nat *)buf; 3911165648Spiso 3912165648Spiso av++; ac--; 3913165648Spiso /* Nat id. */ 3914165648Spiso if (ac && isdigit(**av)) { 3915165648Spiso id = *av; 3916165648Spiso i = atoi(*av); 3917165648Spiso ac--; av++; 3918165648Spiso n->id = i; 3919165648Spiso } else 3920165648Spiso errx(EX_DATAERR, "missing nat id"); 3921165648Spiso if (ac == 0) 3922165648Spiso errx(EX_DATAERR, "missing option"); 3923165648Spiso 3924165648Spiso while (ac > 0) { 3925165648Spiso tok = match_token(nat_params, *av); 3926165648Spiso ac--; av++; 3927165648Spiso switch (tok) { 3928165648Spiso case TOK_IP: 3929165648Spiso if (ac == 0) 3930165648Spiso errx(EX_DATAERR, "missing option"); 3931165648Spiso if (!inet_aton(av[0], &(n->ip))) 3932165648Spiso errx(EX_DATAERR, "bad ip address ``%s''", 3933165648Spiso av[0]); 3934165648Spiso ac--; av++; 3935165648Spiso break; 3936165648Spiso case TOK_IF: 3937165648Spiso set_addr_dynamic(av[0], n); 3938165648Spiso ac--; av++; 3939165648Spiso break; 3940165648Spiso case TOK_ALOG: 3941165648Spiso n->mode |= PKT_ALIAS_LOG; 3942165648Spiso break; 3943165648Spiso case TOK_DENY_INC: 3944165648Spiso n->mode |= PKT_ALIAS_DENY_INCOMING; 3945165648Spiso break; 3946165648Spiso case TOK_SAME_PORTS: 3947165648Spiso n->mode |= PKT_ALIAS_SAME_PORTS; 3948165648Spiso break; 3949165648Spiso case TOK_UNREG_ONLY: 3950165648Spiso n->mode |= PKT_ALIAS_UNREGISTERED_ONLY; 3951165648Spiso break; 3952165648Spiso case TOK_RESET_ADDR: 3953165648Spiso n->mode |= PKT_ALIAS_RESET_ON_ADDR_CHANGE; 3954165648Spiso break; 3955165648Spiso case TOK_ALIAS_REV: 3956165648Spiso n->mode |= PKT_ALIAS_REVERSE; 3957165648Spiso break; 3958165648Spiso case TOK_PROXY_ONLY: 3959165648Spiso n->mode |= PKT_ALIAS_PROXY_ONLY; 3960165648Spiso break; 3961165648Spiso /* 3962165648Spiso * All the setup_redir_* functions work directly in the final 3963165648Spiso * buffer, see above for details. 3964165648Spiso */ 3965165648Spiso case TOK_REDIR_ADDR: 3966165648Spiso case TOK_REDIR_PORT: 3967165648Spiso case TOK_REDIR_PROTO: 3968165648Spiso switch (tok) { 3969165648Spiso case TOK_REDIR_ADDR: 3970165648Spiso i = setup_redir_addr(&buf[off], len, &ac, &av); 3971165648Spiso break; 3972165648Spiso case TOK_REDIR_PORT: 3973165648Spiso i = setup_redir_port(&buf[off], len, &ac, &av); 3974165648Spiso break; 3975165648Spiso case TOK_REDIR_PROTO: 3976165648Spiso i = setup_redir_proto(&buf[off], len, &ac, &av); 3977165648Spiso break; 3978165648Spiso } 3979165648Spiso n->redir_cnt++; 3980165648Spiso off += i; 3981165648Spiso len -= i; 3982165648Spiso break; 3983165648Spiso default: 3984165648Spiso errx(EX_DATAERR, "unrecognised option ``%s''", av[-1]); 3985165648Spiso } 3986165648Spiso } 3987165648Spiso 3988165648Spiso i = do_cmd(IP_FW_NAT_CFG, buf, off); 3989165648Spiso if (i) 3990165648Spiso err(1, "setsockopt(%s)", "IP_FW_NAT_CFG"); 3991165648Spiso 3992165648Spiso /* After every modification, we show the resultant rule. */ 3993165648Spiso int _ac = 3; 3994165648Spiso char *_av[] = {"show", "config", id}; 3995165648Spiso show_nat(_ac, _av); 3996165648Spiso} 3997165648Spiso 3998165648Spisostatic void 399998943Sluigiconfig_pipe(int ac, char **av) 400098943Sluigi{ 4001117469Sluigi struct dn_pipe p; 400298943Sluigi int i; 400398943Sluigi char *end; 400498943Sluigi void *par = NULL; 400598943Sluigi 4006117469Sluigi memset(&p, 0, sizeof p); 400798943Sluigi 400898943Sluigi av++; ac--; 400998943Sluigi /* Pipe number */ 401098943Sluigi if (ac && isdigit(**av)) { 401198943Sluigi i = atoi(*av); av++; ac--; 401298943Sluigi if (do_pipe == 1) 4013117469Sluigi p.pipe_nr = i; 401498943Sluigi else 4015117469Sluigi p.fs.fs_nr = i; 401698943Sluigi } 401799475Sluigi while (ac > 0) { 401898943Sluigi double d; 401998943Sluigi int tok = match_token(dummynet_params, *av); 402098943Sluigi ac--; av++; 402198943Sluigi 402298943Sluigi switch(tok) { 4023101978Sluigi case TOK_NOERROR: 4024117469Sluigi p.fs.flags_fs |= DN_NOERROR; 4025101978Sluigi break; 4026101978Sluigi 402798943Sluigi case TOK_PLR: 402898943Sluigi NEED1("plr needs argument 0..1\n"); 402998943Sluigi d = strtod(av[0], NULL); 403098943Sluigi if (d > 1) 403198943Sluigi d = 1; 403298943Sluigi else if (d < 0) 403398943Sluigi d = 0; 4034117469Sluigi p.fs.plr = (int)(d*0x7fffffff); 403598943Sluigi ac--; av++; 403698943Sluigi break; 403798943Sluigi 403898943Sluigi case TOK_QUEUE: 403998943Sluigi NEED1("queue needs queue size\n"); 404098943Sluigi end = NULL; 4041117469Sluigi p.fs.qsize = strtoul(av[0], &end, 0); 404298943Sluigi if (*end == 'K' || *end == 'k') { 4043117469Sluigi p.fs.flags_fs |= DN_QSIZE_IS_BYTES; 4044117469Sluigi p.fs.qsize *= 1024; 4045140271Sbrooks } else if (*end == 'B' || 4046140271Sbrooks _substrcmp2(end, "by", "bytes") == 0) { 4047117469Sluigi p.fs.flags_fs |= DN_QSIZE_IS_BYTES; 404898943Sluigi } 404998943Sluigi ac--; av++; 405098943Sluigi break; 405198943Sluigi 405298943Sluigi case TOK_BUCKETS: 405398943Sluigi NEED1("buckets needs argument\n"); 4054117469Sluigi p.fs.rq_size = strtoul(av[0], NULL, 0); 405598943Sluigi ac--; av++; 405698943Sluigi break; 405798943Sluigi 405898943Sluigi case TOK_MASK: 405998943Sluigi NEED1("mask needs mask specifier\n"); 406098943Sluigi /* 406198943Sluigi * per-flow queue, mask is dst_ip, dst_port, 406298943Sluigi * src_ip, src_port, proto measured in bits 406398943Sluigi */ 406498943Sluigi par = NULL; 406598943Sluigi 4066145246Sbrooks bzero(&p.fs.flow_mask, sizeof(p.fs.flow_mask)); 406798943Sluigi end = NULL; 406898943Sluigi 406998943Sluigi while (ac >= 1) { 4070117328Sluigi uint32_t *p32 = NULL; 4071117328Sluigi uint16_t *p16 = NULL; 4072145246Sbrooks uint32_t *p20 = NULL; 4073145246Sbrooks struct in6_addr *pa6 = NULL; 4074145246Sbrooks uint32_t a; 407598943Sluigi 407698943Sluigi tok = match_token(dummynet_params, *av); 407798943Sluigi ac--; av++; 407898943Sluigi switch(tok) { 407998943Sluigi case TOK_ALL: 408098943Sluigi /* 408198943Sluigi * special case, all bits significant 408298943Sluigi */ 4083117469Sluigi p.fs.flow_mask.dst_ip = ~0; 4084117469Sluigi p.fs.flow_mask.src_ip = ~0; 4085117469Sluigi p.fs.flow_mask.dst_port = ~0; 4086117469Sluigi p.fs.flow_mask.src_port = ~0; 4087117469Sluigi p.fs.flow_mask.proto = ~0; 4088145246Sbrooks n2mask(&(p.fs.flow_mask.dst_ip6), 128); 4089145246Sbrooks n2mask(&(p.fs.flow_mask.src_ip6), 128); 4090145246Sbrooks p.fs.flow_mask.flow_id6 = ~0; 4091117469Sluigi p.fs.flags_fs |= DN_HAVE_FLOW_MASK; 409298943Sluigi goto end_mask; 409398943Sluigi 409498943Sluigi case TOK_DSTIP: 4095117469Sluigi p32 = &p.fs.flow_mask.dst_ip; 409698943Sluigi break; 409798943Sluigi 409898943Sluigi case TOK_SRCIP: 4099117469Sluigi p32 = &p.fs.flow_mask.src_ip; 410098943Sluigi break; 410198943Sluigi 4102145246Sbrooks case TOK_DSTIP6: 4103145246Sbrooks pa6 = &(p.fs.flow_mask.dst_ip6); 4104145246Sbrooks break; 4105145246Sbrooks 4106145246Sbrooks case TOK_SRCIP6: 4107145246Sbrooks pa6 = &(p.fs.flow_mask.src_ip6); 4108145246Sbrooks break; 4109145246Sbrooks 4110145246Sbrooks case TOK_FLOWID: 4111145246Sbrooks p20 = &p.fs.flow_mask.flow_id6; 4112145246Sbrooks break; 4113145246Sbrooks 411498943Sluigi case TOK_DSTPORT: 4115117469Sluigi p16 = &p.fs.flow_mask.dst_port; 411698943Sluigi break; 411798943Sluigi 411898943Sluigi case TOK_SRCPORT: 4119117469Sluigi p16 = &p.fs.flow_mask.src_port; 412098943Sluigi break; 412198943Sluigi 412298943Sluigi case TOK_PROTO: 412398943Sluigi break; 412498943Sluigi 412598943Sluigi default: 412698943Sluigi ac++; av--; /* backtrack */ 412798943Sluigi goto end_mask; 412898943Sluigi } 412998943Sluigi if (ac < 1) 413098943Sluigi errx(EX_USAGE, "mask: value missing"); 413198943Sluigi if (*av[0] == '/') { 413298943Sluigi a = strtoul(av[0]+1, &end, 0); 4133145246Sbrooks if (pa6 == NULL) 4134145246Sbrooks a = (a == 32) ? ~0 : (1 << a) - 1; 4135106505Smaxim } else 413699909Sluigi a = strtoul(av[0], &end, 0); 413798943Sluigi if (p32 != NULL) 413898943Sluigi *p32 = a; 413998943Sluigi else if (p16 != NULL) { 4140139821Sbrooks if (a > 0xFFFF) 414198943Sluigi errx(EX_DATAERR, 4142144687Sbrooks "port mask must be 16 bit"); 4143117328Sluigi *p16 = (uint16_t)a; 4144145246Sbrooks } else if (p20 != NULL) { 4145145246Sbrooks if (a > 0xfffff) 4146145246Sbrooks errx(EX_DATAERR, 4147145246Sbrooks "flow_id mask must be 20 bit"); 4148145246Sbrooks *p20 = (uint32_t)a; 4149145246Sbrooks } else if (pa6 != NULL) { 4150145246Sbrooks if (a < 0 || a > 128) 4151145246Sbrooks errx(EX_DATAERR, 4152145246Sbrooks "in6addr invalid mask len"); 4153145246Sbrooks else 4154145246Sbrooks n2mask(pa6, a); 415598943Sluigi } else { 4156139821Sbrooks if (a > 0xFF) 415798943Sluigi errx(EX_DATAERR, 4158144687Sbrooks "proto mask must be 8 bit"); 4159117469Sluigi p.fs.flow_mask.proto = (uint8_t)a; 416098943Sluigi } 416198943Sluigi if (a != 0) 4162117469Sluigi p.fs.flags_fs |= DN_HAVE_FLOW_MASK; 416398943Sluigi ac--; av++; 416498943Sluigi } /* end while, config masks */ 416598943Sluigiend_mask: 416698943Sluigi break; 416798943Sluigi 416898943Sluigi case TOK_RED: 416998943Sluigi case TOK_GRED: 417098943Sluigi NEED1("red/gred needs w_q/min_th/max_th/max_p\n"); 4171117469Sluigi p.fs.flags_fs |= DN_IS_RED; 417298943Sluigi if (tok == TOK_GRED) 4173117469Sluigi p.fs.flags_fs |= DN_IS_GENTLE_RED; 417498943Sluigi /* 417598943Sluigi * the format for parameters is w_q/min_th/max_th/max_p 417698943Sluigi */ 417798943Sluigi if ((end = strsep(&av[0], "/"))) { 417898943Sluigi double w_q = strtod(end, NULL); 417998943Sluigi if (w_q > 1 || w_q <= 0) 418098943Sluigi errx(EX_DATAERR, "0 < w_q <= 1"); 4181117469Sluigi p.fs.w_q = (int) (w_q * (1 << SCALE_RED)); 418298943Sluigi } 418398943Sluigi if ((end = strsep(&av[0], "/"))) { 4184117469Sluigi p.fs.min_th = strtoul(end, &end, 0); 418598943Sluigi if (*end == 'K' || *end == 'k') 4186117469Sluigi p.fs.min_th *= 1024; 418798943Sluigi } 418898943Sluigi if ((end = strsep(&av[0], "/"))) { 4189117469Sluigi p.fs.max_th = strtoul(end, &end, 0); 419098943Sluigi if (*end == 'K' || *end == 'k') 4191117469Sluigi p.fs.max_th *= 1024; 419298943Sluigi } 419398943Sluigi if ((end = strsep(&av[0], "/"))) { 419498943Sluigi double max_p = strtod(end, NULL); 419598943Sluigi if (max_p > 1 || max_p <= 0) 419698943Sluigi errx(EX_DATAERR, "0 < max_p <= 1"); 4197117469Sluigi p.fs.max_p = (int)(max_p * (1 << SCALE_RED)); 419898943Sluigi } 419998943Sluigi ac--; av++; 420098943Sluigi break; 420198943Sluigi 420298943Sluigi case TOK_DROPTAIL: 4203117469Sluigi p.fs.flags_fs &= ~(DN_IS_RED|DN_IS_GENTLE_RED); 420498943Sluigi break; 4205106505Smaxim 420698943Sluigi case TOK_BW: 420798943Sluigi NEED1("bw needs bandwidth or interface\n"); 420898943Sluigi if (do_pipe != 1) 420998943Sluigi errx(EX_DATAERR, "bandwidth only valid for pipes"); 421098943Sluigi /* 421198943Sluigi * set clocking interface or bandwidth value 421298943Sluigi */ 421398943Sluigi if (av[0][0] >= 'a' && av[0][0] <= 'z') { 4214117469Sluigi int l = sizeof(p.if_name)-1; 421598943Sluigi /* interface name */ 4216117469Sluigi strncpy(p.if_name, av[0], l); 4217117469Sluigi p.if_name[l] = '\0'; 4218117469Sluigi p.bandwidth = 0; 421998943Sluigi } else { 4220117469Sluigi p.if_name[0] = '\0'; 4221117469Sluigi p.bandwidth = strtoul(av[0], &end, 0); 422298943Sluigi if (*end == 'K' || *end == 'k') { 422398943Sluigi end++; 4224117469Sluigi p.bandwidth *= 1000; 422598943Sluigi } else if (*end == 'M') { 422698943Sluigi end++; 4227117469Sluigi p.bandwidth *= 1000000; 422898943Sluigi } 4229161550Sdwmalone if ((*end == 'B' && 4230161550Sdwmalone _substrcmp2(end, "Bi", "Bit/s") != 0) || 4231140271Sbrooks _substrcmp2(end, "by", "bytes") == 0) 4232117469Sluigi p.bandwidth *= 8; 4233117469Sluigi if (p.bandwidth < 0) 423498943Sluigi errx(EX_DATAERR, "bandwidth too large"); 423598943Sluigi } 423698943Sluigi ac--; av++; 423798943Sluigi break; 423898943Sluigi 423998943Sluigi case TOK_DELAY: 424098943Sluigi if (do_pipe != 1) 424198943Sluigi errx(EX_DATAERR, "delay only valid for pipes"); 424298943Sluigi NEED1("delay needs argument 0..10000ms\n"); 4243117469Sluigi p.delay = strtoul(av[0], NULL, 0); 424498943Sluigi ac--; av++; 424598943Sluigi break; 424698943Sluigi 424798943Sluigi case TOK_WEIGHT: 424898943Sluigi if (do_pipe == 1) 424998943Sluigi errx(EX_DATAERR,"weight only valid for queues"); 425098943Sluigi NEED1("weight needs argument 0..100\n"); 4251117469Sluigi p.fs.weight = strtoul(av[0], &end, 0); 425298943Sluigi ac--; av++; 425398943Sluigi break; 425498943Sluigi 425598943Sluigi case TOK_PIPE: 425698943Sluigi if (do_pipe == 1) 425798943Sluigi errx(EX_DATAERR,"pipe only valid for queues"); 425898943Sluigi NEED1("pipe needs pipe_number\n"); 4259117469Sluigi p.fs.parent_nr = strtoul(av[0], &end, 0); 426098943Sluigi ac--; av++; 426198943Sluigi break; 426298943Sluigi 426398943Sluigi default: 4264124924Smaxim errx(EX_DATAERR, "unrecognised option ``%s''", av[-1]); 426598943Sluigi } 426698943Sluigi } 426798943Sluigi if (do_pipe == 1) { 4268117469Sluigi if (p.pipe_nr == 0) 426998943Sluigi errx(EX_DATAERR, "pipe_nr must be > 0"); 4270117469Sluigi if (p.delay > 10000) 427198943Sluigi errx(EX_DATAERR, "delay must be < 10000"); 427298943Sluigi } else { /* do_pipe == 2, queue */ 4273117469Sluigi if (p.fs.parent_nr == 0) 427498943Sluigi errx(EX_DATAERR, "pipe must be > 0"); 4275117469Sluigi if (p.fs.weight >100) 427698943Sluigi errx(EX_DATAERR, "weight must be <= 100"); 427798943Sluigi } 4278117469Sluigi if (p.fs.flags_fs & DN_QSIZE_IS_BYTES) { 4279117469Sluigi if (p.fs.qsize > 1024*1024) 428098943Sluigi errx(EX_DATAERR, "queue size must be < 1MB"); 428198943Sluigi } else { 4282117469Sluigi if (p.fs.qsize > 100) 428398943Sluigi errx(EX_DATAERR, "2 <= queue size <= 100"); 428498943Sluigi } 4285117469Sluigi if (p.fs.flags_fs & DN_IS_RED) { 428698943Sluigi size_t len; 428798943Sluigi int lookup_depth, avg_pkt_size; 428898943Sluigi double s, idle, weight, w_q; 4289117469Sluigi struct clockinfo ck; 429098943Sluigi int t; 429198943Sluigi 4292117469Sluigi if (p.fs.min_th >= p.fs.max_th) 429398943Sluigi errx(EX_DATAERR, "min_th %d must be < than max_th %d", 4294117469Sluigi p.fs.min_th, p.fs.max_th); 4295117469Sluigi if (p.fs.max_th == 0) 429698943Sluigi errx(EX_DATAERR, "max_th must be > 0"); 429798943Sluigi 429898943Sluigi len = sizeof(int); 429998943Sluigi if (sysctlbyname("net.inet.ip.dummynet.red_lookup_depth", 430098943Sluigi &lookup_depth, &len, NULL, 0) == -1) 430198943Sluigi 430298943Sluigi errx(1, "sysctlbyname(\"%s\")", 430398943Sluigi "net.inet.ip.dummynet.red_lookup_depth"); 430498943Sluigi if (lookup_depth == 0) 430598943Sluigi errx(EX_DATAERR, "net.inet.ip.dummynet.red_lookup_depth" 430698943Sluigi " must be greater than zero"); 430798943Sluigi 430898943Sluigi len = sizeof(int); 430998943Sluigi if (sysctlbyname("net.inet.ip.dummynet.red_avg_pkt_size", 431098943Sluigi &avg_pkt_size, &len, NULL, 0) == -1) 431198943Sluigi 431298943Sluigi errx(1, "sysctlbyname(\"%s\")", 431398943Sluigi "net.inet.ip.dummynet.red_avg_pkt_size"); 431498943Sluigi if (avg_pkt_size == 0) 431598943Sluigi errx(EX_DATAERR, 431698943Sluigi "net.inet.ip.dummynet.red_avg_pkt_size must" 431798943Sluigi " be greater than zero"); 431898943Sluigi 431998943Sluigi len = sizeof(struct clockinfo); 4320117469Sluigi if (sysctlbyname("kern.clockrate", &ck, &len, NULL, 0) == -1) 432198943Sluigi errx(1, "sysctlbyname(\"%s\")", "kern.clockrate"); 432298943Sluigi 432398943Sluigi /* 432498943Sluigi * Ticks needed for sending a medium-sized packet. 432598943Sluigi * Unfortunately, when we are configuring a WF2Q+ queue, we 432698943Sluigi * do not have bandwidth information, because that is stored 432798943Sluigi * in the parent pipe, and also we have multiple queues 432898943Sluigi * competing for it. So we set s=0, which is not very 432998943Sluigi * correct. But on the other hand, why do we want RED with 433098943Sluigi * WF2Q+ ? 433198943Sluigi */ 4332117469Sluigi if (p.bandwidth==0) /* this is a WF2Q+ queue */ 433398943Sluigi s = 0; 433498943Sluigi else 4335117469Sluigi s = ck.hz * avg_pkt_size * 8 / p.bandwidth; 433698943Sluigi 433798943Sluigi /* 433898943Sluigi * max idle time (in ticks) before avg queue size becomes 0. 433998943Sluigi * NOTA: (3/w_q) is approx the value x so that 434098943Sluigi * (1-w_q)^x < 10^-3. 434198943Sluigi */ 4342117469Sluigi w_q = ((double)p.fs.w_q) / (1 << SCALE_RED); 434398943Sluigi idle = s * 3. / w_q; 4344117469Sluigi p.fs.lookup_step = (int)idle / lookup_depth; 4345117469Sluigi if (!p.fs.lookup_step) 4346117469Sluigi p.fs.lookup_step = 1; 434798943Sluigi weight = 1 - w_q; 4348117469Sluigi for (t = p.fs.lookup_step; t > 0; --t) 434998943Sluigi weight *= weight; 4350117469Sluigi p.fs.lookup_weight = (int)(weight * (1 << SCALE_RED)); 435198943Sluigi } 4352117469Sluigi i = do_cmd(IP_DUMMYNET_CONFIGURE, &p, sizeof p); 435398943Sluigi if (i) 435498943Sluigi err(1, "setsockopt(%s)", "IP_DUMMYNET_CONFIGURE"); 435598943Sluigi} 435698943Sluigi 435798943Sluigistatic void 4358117577Sluigiget_mac_addr_mask(char *p, uint8_t *addr, uint8_t *mask) 435998943Sluigi{ 436098943Sluigi int i, l; 436198943Sluigi 436298943Sluigi for (i=0; i<6; i++) 436398943Sluigi addr[i] = mask[i] = 0; 4364140271Sbrooks if (strcmp(p, "any") == 0) 436598943Sluigi return; 436698943Sluigi 436798943Sluigi for (i=0; *p && i<6;i++, p++) { 436898943Sluigi addr[i] = strtol(p, &p, 16); 436998943Sluigi if (*p != ':') /* we start with the mask */ 437098943Sluigi break; 437198943Sluigi } 437298943Sluigi if (*p == '/') { /* mask len */ 437398943Sluigi l = strtol(p+1, &p, 0); 437498943Sluigi for (i=0; l>0; l -=8, i++) 437598943Sluigi mask[i] = (l >=8) ? 0xff : (~0) << (8-l); 437698943Sluigi } else if (*p == '&') { /* mask */ 437798943Sluigi for (i=0, p++; *p && i<6;i++, p++) { 437898943Sluigi mask[i] = strtol(p, &p, 16); 437998943Sluigi if (*p != ':') 438098943Sluigi break; 438198943Sluigi } 438298943Sluigi } else if (*p == '\0') { 438398943Sluigi for (i=0; i<6; i++) 438498943Sluigi mask[i] = 0xff; 438598943Sluigi } 438698943Sluigi for (i=0; i<6; i++) 438798943Sluigi addr[i] &= mask[i]; 438898943Sluigi} 438998943Sluigi 439098943Sluigi/* 439198943Sluigi * helper function, updates the pointer to cmd with the length 439298943Sluigi * of the current command, and also cleans up the first word of 439398943Sluigi * the new command in case it has been clobbered before. 439498943Sluigi */ 439598943Sluigistatic ipfw_insn * 439698943Sluiginext_cmd(ipfw_insn *cmd) 439798943Sluigi{ 439898943Sluigi cmd += F_LEN(cmd); 439998943Sluigi bzero(cmd, sizeof(*cmd)); 440098943Sluigi return cmd; 440198943Sluigi} 440298943Sluigi 440398943Sluigi/* 4404117469Sluigi * Takes arguments and copies them into a comment 4405117469Sluigi */ 4406117469Sluigistatic void 4407117469Sluigifill_comment(ipfw_insn *cmd, int ac, char **av) 4408117469Sluigi{ 4409117469Sluigi int i, l; 4410117469Sluigi char *p = (char *)(cmd + 1); 4411117577Sluigi 4412117469Sluigi cmd->opcode = O_NOP; 4413117469Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)); 4414117469Sluigi 4415117469Sluigi /* Compute length of comment string. */ 4416117469Sluigi for (i = 0, l = 0; i < ac; i++) 4417117469Sluigi l += strlen(av[i]) + 1; 4418117469Sluigi if (l == 0) 4419117469Sluigi return; 4420117469Sluigi if (l > 84) 4421117469Sluigi errx(EX_DATAERR, 4422117469Sluigi "comment too long (max 80 chars)"); 4423117469Sluigi l = 1 + (l+3)/4; 4424117469Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | l; 4425117469Sluigi for (i = 0; i < ac; i++) { 4426117469Sluigi strcpy(p, av[i]); 4427117469Sluigi p += strlen(av[i]); 4428117469Sluigi *p++ = ' '; 4429117469Sluigi } 4430117469Sluigi *(--p) = '\0'; 4431117469Sluigi} 4432117577Sluigi 4433117469Sluigi/* 443498943Sluigi * A function to fill simple commands of size 1. 443598943Sluigi * Existing flags are preserved. 443698943Sluigi */ 443798943Sluigistatic void 4438117328Sluigifill_cmd(ipfw_insn *cmd, enum ipfw_opcodes opcode, int flags, uint16_t arg) 443998943Sluigi{ 444098943Sluigi cmd->opcode = opcode; 444198943Sluigi cmd->len = ((cmd->len | flags) & (F_NOT | F_OR)) | 1; 444298943Sluigi cmd->arg1 = arg; 444398943Sluigi} 444498943Sluigi 444598943Sluigi/* 444698943Sluigi * Fetch and add the MAC address and type, with masks. This generates one or 444798943Sluigi * two microinstructions, and returns the pointer to the last one. 444898943Sluigi */ 444998943Sluigistatic ipfw_insn * 445098943Sluigiadd_mac(ipfw_insn *cmd, int ac, char *av[]) 445198943Sluigi{ 4452102087Sluigi ipfw_insn_mac *mac; 445398943Sluigi 4454102087Sluigi if (ac < 2) 4455102098Sluigi errx(EX_DATAERR, "MAC dst src"); 445698943Sluigi 445798943Sluigi cmd->opcode = O_MACADDR2; 445898943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | F_INSN_SIZE(ipfw_insn_mac); 445998943Sluigi 446098943Sluigi mac = (ipfw_insn_mac *)cmd; 4461101978Sluigi get_mac_addr_mask(av[0], mac->addr, mac->mask); /* dst */ 446298943Sluigi get_mac_addr_mask(av[1], &(mac->addr[6]), &(mac->mask[6])); /* src */ 4463102087Sluigi return cmd; 4464102087Sluigi} 446598943Sluigi 4466102087Sluigistatic ipfw_insn * 4467102087Sluigiadd_mactype(ipfw_insn *cmd, int ac, char *av) 4468102087Sluigi{ 4469102087Sluigi if (ac < 1) 4470102087Sluigi errx(EX_DATAERR, "missing MAC type"); 4471102087Sluigi if (strcmp(av, "any") != 0) { /* we have a non-null type */ 4472102087Sluigi fill_newports((ipfw_insn_u16 *)cmd, av, IPPROTO_ETHERTYPE); 447398943Sluigi cmd->opcode = O_MAC_TYPE; 4474102087Sluigi return cmd; 4475102087Sluigi } else 4476102087Sluigi return NULL; 4477102087Sluigi} 447898943Sluigi 4479102087Sluigistatic ipfw_insn * 4480152923Sumeadd_proto0(ipfw_insn *cmd, char *av, u_char *protop) 4481102087Sluigi{ 4482102087Sluigi struct protoent *pe; 4483152923Sume char *ep; 4484152923Sume int proto; 4485102087Sluigi 4486156315Sume proto = strtol(av, &ep, 10); 4487156315Sume if (*ep != '\0' || proto <= 0) { 4488152923Sume if ((pe = getprotobyname(av)) == NULL) 4489152923Sume return NULL; 4490152923Sume proto = pe->p_proto; 4491152923Sume } 4492145246Sbrooks 4493152923Sume fill_cmd(cmd, O_PROTO, 0, proto); 4494152923Sume *protop = proto; 4495152923Sume return cmd; 4496152923Sume} 4497152923Sume 4498152923Sumestatic ipfw_insn * 4499152923Sumeadd_proto(ipfw_insn *cmd, char *av, u_char *protop) 4500152923Sume{ 4501152923Sume u_char proto = IPPROTO_IP; 4502152923Sume 4503156315Sume if (_substrcmp(av, "all") == 0 || strcmp(av, "ip") == 0) 4504146894Smlaier ; /* do not set O_IP4 nor O_IP6 */ 4505152923Sume else if (strcmp(av, "ip4") == 0) 4506152923Sume /* explicit "just IPv4" rule */ 4507152923Sume fill_cmd(cmd, O_IP4, 0, 0); 4508152923Sume else if (strcmp(av, "ip6") == 0) { 4509152923Sume /* explicit "just IPv6" rule */ 4510152923Sume proto = IPPROTO_IPV6; 4511152923Sume fill_cmd(cmd, O_IP6, 0, 0); 4512152923Sume } else 4513152923Sume return add_proto0(cmd, av, protop); 4514152923Sume 4515152923Sume *protop = proto; 4516152923Sume return cmd; 4517152923Sume} 4518152923Sume 4519152923Sumestatic ipfw_insn * 4520152923Sumeadd_proto_compat(ipfw_insn *cmd, char *av, u_char *protop) 4521152923Sume{ 4522152923Sume u_char proto = IPPROTO_IP; 4523152923Sume 4524152923Sume if (_substrcmp(av, "all") == 0 || strcmp(av, "ip") == 0) 4525152923Sume ; /* do not set O_IP4 nor O_IP6 */ 4526146894Smlaier else if (strcmp(av, "ipv4") == 0 || strcmp(av, "ip4") == 0) 4527146894Smlaier /* explicit "just IPv4" rule */ 4528146894Smlaier fill_cmd(cmd, O_IP4, 0, 0); 4529146894Smlaier else if (strcmp(av, "ipv6") == 0 || strcmp(av, "ip6") == 0) { 4530146894Smlaier /* explicit "just IPv6" rule */ 4531152923Sume proto = IPPROTO_IPV6; 4532146894Smlaier fill_cmd(cmd, O_IP6, 0, 0); 4533152923Sume } else 4534152923Sume return add_proto0(cmd, av, protop); 4535145246Sbrooks 4536152923Sume *protop = proto; 453798943Sluigi return cmd; 453898943Sluigi} 453998943Sluigi 4540102087Sluigistatic ipfw_insn * 4541102087Sluigiadd_srcip(ipfw_insn *cmd, char *av) 4542102087Sluigi{ 4543102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 4544102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 4545102087Sluigi cmd->opcode = O_IP_SRC_SET; 4546130281Sru else if (cmd->opcode == O_IP_DST_LOOKUP) /* table */ 4547130281Sru cmd->opcode = O_IP_SRC_LOOKUP; 4548102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 4549102087Sluigi cmd->opcode = O_IP_SRC_ME; 4550102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 4551102087Sluigi cmd->opcode = O_IP_SRC; 4552117328Sluigi else /* addr/mask */ 4553102087Sluigi cmd->opcode = O_IP_SRC_MASK; 4554102087Sluigi return cmd; 4555102087Sluigi} 4556102087Sluigi 4557102087Sluigistatic ipfw_insn * 4558102087Sluigiadd_dstip(ipfw_insn *cmd, char *av) 4559102087Sluigi{ 4560102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 4561102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 4562102087Sluigi ; 4563130281Sru else if (cmd->opcode == O_IP_DST_LOOKUP) /* table */ 4564130281Sru ; 4565102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 4566102087Sluigi cmd->opcode = O_IP_DST_ME; 4567102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 4568102087Sluigi cmd->opcode = O_IP_DST; 4569117328Sluigi else /* addr/mask */ 4570102087Sluigi cmd->opcode = O_IP_DST_MASK; 4571102087Sluigi return cmd; 4572102087Sluigi} 4573102087Sluigi 4574102087Sluigistatic ipfw_insn * 4575102087Sluigiadd_ports(ipfw_insn *cmd, char *av, u_char proto, int opcode) 4576102087Sluigi{ 4577140271Sbrooks if (_substrcmp(av, "any") == 0) { 4578102087Sluigi return NULL; 4579102087Sluigi } else if (fill_newports((ipfw_insn_u16 *)cmd, av, proto)) { 4580102087Sluigi /* XXX todo: check that we have a protocol with ports */ 4581102087Sluigi cmd->opcode = opcode; 4582102087Sluigi return cmd; 4583102087Sluigi } 4584102087Sluigi return NULL; 4585102087Sluigi} 4586102087Sluigi 4587145246Sbrooksstatic ipfw_insn * 4588145246Sbrooksadd_src(ipfw_insn *cmd, char *av, u_char proto) 4589145246Sbrooks{ 4590145246Sbrooks struct in6_addr a; 4591158553Smlaier char *host, *ch; 4592158553Smlaier ipfw_insn *ret = NULL; 4593145246Sbrooks 4594158553Smlaier if ((host = strdup(av)) == NULL) 4595158553Smlaier return NULL; 4596158553Smlaier if ((ch = strrchr(host, '/')) != NULL) 4597158553Smlaier *ch = '\0'; 4598158553Smlaier 4599145246Sbrooks if (proto == IPPROTO_IPV6 || strcmp(av, "me6") == 0 || 4600158553Smlaier inet_pton(AF_INET6, host, &a)) 4601158553Smlaier ret = add_srcip6(cmd, av); 4602145246Sbrooks /* XXX: should check for IPv4, not !IPv6 */ 4603161483Sdwmalone if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 || 4604161483Sdwmalone !inet_pton(AF_INET6, host, &a))) 4605158553Smlaier ret = add_srcip(cmd, av); 4606161483Sdwmalone if (ret == NULL && strcmp(av, "any") != 0) 4607158553Smlaier ret = cmd; 4608145246Sbrooks 4609158553Smlaier free(host); 4610158553Smlaier return ret; 4611145246Sbrooks} 4612145246Sbrooks 4613145246Sbrooksstatic ipfw_insn * 4614145246Sbrooksadd_dst(ipfw_insn *cmd, char *av, u_char proto) 4615145246Sbrooks{ 4616145246Sbrooks struct in6_addr a; 4617158553Smlaier char *host, *ch; 4618158553Smlaier ipfw_insn *ret = NULL; 4619145246Sbrooks 4620158553Smlaier if ((host = strdup(av)) == NULL) 4621158553Smlaier return NULL; 4622158553Smlaier if ((ch = strrchr(host, '/')) != NULL) 4623158553Smlaier *ch = '\0'; 4624158553Smlaier 4625145246Sbrooks if (proto == IPPROTO_IPV6 || strcmp(av, "me6") == 0 || 4626158553Smlaier inet_pton(AF_INET6, host, &a)) 4627158553Smlaier ret = add_dstip6(cmd, av); 4628145246Sbrooks /* XXX: should check for IPv4, not !IPv6 */ 4629161483Sdwmalone if (ret == NULL && (proto == IPPROTO_IP || strcmp(av, "me") == 0 || 4630161483Sdwmalone !inet_pton(AF_INET6, host, &a))) 4631158553Smlaier ret = add_dstip(cmd, av); 4632161483Sdwmalone if (ret == NULL && strcmp(av, "any") != 0) 4633158553Smlaier ret = cmd; 4634145246Sbrooks 4635158553Smlaier free(host); 4636158553Smlaier return ret; 4637145246Sbrooks} 4638145246Sbrooks 463998943Sluigi/* 464098943Sluigi * Parse arguments and assemble the microinstructions which make up a rule. 464198943Sluigi * Rules are added into the 'rulebuf' and then copied in the correct order 464298943Sluigi * into the actual rule. 464398943Sluigi * 4644136071Sgreen * The syntax for a rule starts with the action, followed by 4645136071Sgreen * optional action parameters, and the various match patterns. 4646108533Sschweikh * In the assembled microcode, the first opcode must be an O_PROBE_STATE 464798943Sluigi * (generated if the rule includes a keep-state option), then the 4648136071Sgreen * various match patterns, log/altq actions, and the actual action. 4649106505Smaxim * 465098943Sluigi */ 465198943Sluigistatic void 465298943Sluigiadd(int ac, char *av[]) 465398943Sluigi{ 465498943Sluigi /* 465598943Sluigi * rules are added into the 'rulebuf' and then copied in 465698943Sluigi * the correct order into the actual rule. 465798943Sluigi * Some things that need to go out of order (prob, action etc.) 465898943Sluigi * go into actbuf[]. 465998943Sluigi */ 4660117328Sluigi static uint32_t rulebuf[255], actbuf[255], cmdbuf[255]; 466198943Sluigi 4662117469Sluigi ipfw_insn *src, *dst, *cmd, *action, *prev=NULL; 4663102087Sluigi ipfw_insn *first_cmd; /* first match pattern */ 466498943Sluigi 466598943Sluigi struct ip_fw *rule; 466698943Sluigi 466798943Sluigi /* 466898943Sluigi * various flags used to record that we entered some fields. 466998943Sluigi */ 4670101116Sluigi ipfw_insn *have_state = NULL; /* check-state or keep-state */ 4671158879Soleg ipfw_insn *have_log = NULL, *have_altq = NULL, *have_tag = NULL; 4672134475Smaxim size_t len; 467398943Sluigi 467498943Sluigi int i; 467598943Sluigi 467698943Sluigi int open_par = 0; /* open parenthesis ( */ 467798943Sluigi 467898943Sluigi /* proto is here because it is used to fetch ports */ 467998943Sluigi u_char proto = IPPROTO_IP; /* default protocol */ 468098943Sluigi 4681107289Sluigi double match_prob = 1; /* match probability, default is always match */ 4682107289Sluigi 468398943Sluigi bzero(actbuf, sizeof(actbuf)); /* actions go here */ 468498943Sluigi bzero(cmdbuf, sizeof(cmdbuf)); 468598943Sluigi bzero(rulebuf, sizeof(rulebuf)); 468698943Sluigi 468798943Sluigi rule = (struct ip_fw *)rulebuf; 468898943Sluigi cmd = (ipfw_insn *)cmdbuf; 468998943Sluigi action = (ipfw_insn *)actbuf; 469098943Sluigi 469198943Sluigi av++; ac--; 469298943Sluigi 469398943Sluigi /* [rule N] -- Rule number optional */ 469498943Sluigi if (ac && isdigit(**av)) { 469598943Sluigi rule->rulenum = atoi(*av); 469698943Sluigi av++; 469798943Sluigi ac--; 469898943Sluigi } 469998943Sluigi 4700117655Sluigi /* [set N] -- set number (0..RESVD_SET), optional */ 4701140271Sbrooks if (ac > 1 && _substrcmp(*av, "set") == 0) { 4702101628Sluigi int set = strtoul(av[1], NULL, 10); 4703117655Sluigi if (set < 0 || set > RESVD_SET) 4704101628Sluigi errx(EX_DATAERR, "illegal set %s", av[1]); 4705101628Sluigi rule->set = set; 4706101628Sluigi av += 2; ac -= 2; 4707101628Sluigi } 4708101628Sluigi 470998943Sluigi /* [prob D] -- match probability, optional */ 4710140271Sbrooks if (ac > 1 && _substrcmp(*av, "prob") == 0) { 4711107289Sluigi match_prob = strtod(av[1], NULL); 471298943Sluigi 4713107289Sluigi if (match_prob <= 0 || match_prob > 1) 471498943Sluigi errx(EX_DATAERR, "illegal match prob. %s", av[1]); 471598943Sluigi av += 2; ac -= 2; 471698943Sluigi } 471798943Sluigi 471898943Sluigi /* action -- mandatory */ 471998943Sluigi NEED1("missing action"); 472098943Sluigi i = match_token(rule_actions, *av); 472198943Sluigi ac--; av++; 472298943Sluigi action->len = 1; /* default */ 472398943Sluigi switch(i) { 472498943Sluigi case TOK_CHECKSTATE: 4725101116Sluigi have_state = action; 472698943Sluigi action->opcode = O_CHECK_STATE; 472798943Sluigi break; 472898943Sluigi 472998943Sluigi case TOK_ACCEPT: 473098943Sluigi action->opcode = O_ACCEPT; 473198943Sluigi break; 473298943Sluigi 473398943Sluigi case TOK_DENY: 473498943Sluigi action->opcode = O_DENY; 473599475Sluigi action->arg1 = 0; 473698943Sluigi break; 473798943Sluigi 473899475Sluigi case TOK_REJECT: 473999475Sluigi action->opcode = O_REJECT; 474099475Sluigi action->arg1 = ICMP_UNREACH_HOST; 474199475Sluigi break; 474299475Sluigi 474399475Sluigi case TOK_RESET: 474499475Sluigi action->opcode = O_REJECT; 474599475Sluigi action->arg1 = ICMP_REJECT_RST; 474699475Sluigi break; 474799475Sluigi 4748149020Sbz case TOK_RESET6: 4749149020Sbz action->opcode = O_UNREACH6; 4750149020Sbz action->arg1 = ICMP6_UNREACH_RST; 4751149020Sbz break; 4752149020Sbz 475399475Sluigi case TOK_UNREACH: 475499475Sluigi action->opcode = O_REJECT; 475599475Sluigi NEED1("missing reject code"); 475699475Sluigi fill_reject_code(&action->arg1, *av); 475799475Sluigi ac--; av++; 475899475Sluigi break; 475999475Sluigi 4760149020Sbz case TOK_UNREACH6: 4761149020Sbz action->opcode = O_UNREACH6; 4762149020Sbz NEED1("missing unreach code"); 4763149020Sbz fill_unreach6_code(&action->arg1, *av); 4764149020Sbz ac--; av++; 4765149020Sbz break; 4766149020Sbz 476798943Sluigi case TOK_COUNT: 476898943Sluigi action->opcode = O_COUNT; 476998943Sluigi break; 477098943Sluigi 477198943Sluigi case TOK_QUEUE: 4772153374Sglebius action->opcode = O_QUEUE; 4773153374Sglebius goto chkarg; 477498943Sluigi case TOK_PIPE: 4775153374Sglebius action->opcode = O_PIPE; 4776153374Sglebius goto chkarg; 477798943Sluigi case TOK_SKIPTO: 4778153374Sglebius action->opcode = O_SKIPTO; 4779153374Sglebius goto chkarg; 4780153374Sglebius case TOK_NETGRAPH: 4781153374Sglebius action->opcode = O_NETGRAPH; 4782153374Sglebius goto chkarg; 4783153374Sglebius case TOK_NGTEE: 4784153374Sglebius action->opcode = O_NGTEE; 4785153374Sglebius goto chkarg; 478698943Sluigi case TOK_DIVERT: 4787153374Sglebius action->opcode = O_DIVERT; 4788153374Sglebius goto chkarg; 478998943Sluigi case TOK_TEE: 4790153374Sglebius action->opcode = O_TEE; 4791153374Sglebiuschkarg: 4792153374Sglebius if (!ac) 4793153374Sglebius errx(EX_USAGE, "missing argument for %s", *(av - 1)); 4794153374Sglebius if (isdigit(**av)) { 4795153374Sglebius action->arg1 = strtoul(*av, NULL, 10); 4796153374Sglebius if (action->arg1 <= 0 || action->arg1 >= IP_FW_TABLEARG) 4797153374Sglebius errx(EX_DATAERR, "illegal argument for %s", 4798153374Sglebius *(av - 1)); 4799153374Sglebius } else if (_substrcmp(*av, TABLEARG) == 0) { 4800153374Sglebius action->arg1 = IP_FW_TABLEARG; 4801153374Sglebius } else if (i == TOK_DIVERT || i == TOK_TEE) { 480298943Sluigi struct servent *s; 480398943Sluigi setservent(1); 480498943Sluigi s = getservbyname(av[0], "divert"); 480598943Sluigi if (s != NULL) 480698943Sluigi action->arg1 = ntohs(s->s_port); 480798943Sluigi else 480898943Sluigi errx(EX_DATAERR, "illegal divert/tee port"); 4809153374Sglebius } else 4810153374Sglebius errx(EX_DATAERR, "illegal argument for %s", *(av - 1)); 481198943Sluigi ac--; av++; 481298943Sluigi break; 481398943Sluigi 481498943Sluigi case TOK_FORWARD: { 481598943Sluigi ipfw_insn_sa *p = (ipfw_insn_sa *)action; 481698943Sluigi char *s, *end; 481798943Sluigi 481898943Sluigi NEED1("missing forward address[:port]"); 481998943Sluigi 482098943Sluigi action->opcode = O_FORWARD_IP; 482198943Sluigi action->len = F_INSN_SIZE(ipfw_insn_sa); 482298943Sluigi 482398943Sluigi p->sa.sin_len = sizeof(struct sockaddr_in); 482498943Sluigi p->sa.sin_family = AF_INET; 482598943Sluigi p->sa.sin_port = 0; 482698943Sluigi /* 482798943Sluigi * locate the address-port separator (':' or ',') 482898943Sluigi */ 482998943Sluigi s = strchr(*av, ':'); 483098943Sluigi if (s == NULL) 483198943Sluigi s = strchr(*av, ','); 483298943Sluigi if (s != NULL) { 483398943Sluigi *(s++) = '\0'; 483498943Sluigi i = strtoport(s, &end, 0 /* base */, 0 /* proto */); 483598943Sluigi if (s == end) 483698943Sluigi errx(EX_DATAERR, 483798943Sluigi "illegal forwarding port ``%s''", s); 4838103241Sluigi p->sa.sin_port = (u_short)i; 483998943Sluigi } 4840161456Sjulian if (_substrcmp(*av, "tablearg") == 0) 4841161456Sjulian p->sa.sin_addr.s_addr = INADDR_ANY; 4842161456Sjulian else 4843161424Sjulian lookup_host(*av, &(p->sa.sin_addr)); 484498943Sluigi ac--; av++; 484598943Sluigi break; 4846161424Sjulian } 4847117469Sluigi case TOK_COMMENT: 4848117469Sluigi /* pretend it is a 'count' rule followed by the comment */ 4849117469Sluigi action->opcode = O_COUNT; 4850117469Sluigi ac++; av--; /* go back... */ 4851117469Sluigi break; 4852117469Sluigi 4853165648Spiso case TOK_NAT: 4854165648Spiso action->opcode = O_NAT; 4855165648Spiso action->len = F_INSN_SIZE(ipfw_insn_nat); 4856165648Spiso NEED1("missing nat number"); 4857165648Spiso action->arg1 = strtoul(*av, NULL, 10); 4858165648Spiso ac--; av++; 4859165648Spiso break; 4860165648Spiso 486198943Sluigi default: 4862102087Sluigi errx(EX_DATAERR, "invalid action %s\n", av[-1]); 486398943Sluigi } 486498943Sluigi action = next_cmd(action); 486598943Sluigi 486698943Sluigi /* 4867136071Sgreen * [altq queuename] -- altq tag, optional 486898943Sluigi * [log [logamount N]] -- log, optional 486998943Sluigi * 4870136071Sgreen * If they exist, it go first in the cmdbuf, but then it is 487198943Sluigi * skipped in the copy section to the end of the buffer. 487298943Sluigi */ 4873136071Sgreen while (ac != 0 && (i = match_token(rule_action_params, *av)) != -1) { 4874136071Sgreen ac--; av++; 4875136071Sgreen switch (i) { 4876136071Sgreen case TOK_LOG: 4877136071Sgreen { 4878136071Sgreen ipfw_insn_log *c = (ipfw_insn_log *)cmd; 4879136071Sgreen int l; 488098943Sluigi 4881136071Sgreen if (have_log) 4882136071Sgreen errx(EX_DATAERR, 4883136071Sgreen "log cannot be specified more than once"); 4884136071Sgreen have_log = (ipfw_insn *)c; 4885136071Sgreen cmd->len = F_INSN_SIZE(ipfw_insn_log); 4886136071Sgreen cmd->opcode = O_LOG; 4887140271Sbrooks if (ac && _substrcmp(*av, "logamount") == 0) { 4888136071Sgreen ac--; av++; 4889136071Sgreen NEED1("logamount requires argument"); 4890136071Sgreen l = atoi(*av); 4891136071Sgreen if (l < 0) 4892136071Sgreen errx(EX_DATAERR, 4893136071Sgreen "logamount must be positive"); 4894136071Sgreen c->max_log = l; 4895136071Sgreen ac--; av++; 4896136071Sgreen } else { 4897136071Sgreen len = sizeof(c->max_log); 4898136071Sgreen if (sysctlbyname("net.inet.ip.fw.verbose_limit", 4899136071Sgreen &c->max_log, &len, NULL, 0) == -1) 4900136071Sgreen errx(1, "sysctlbyname(\"%s\")", 4901136071Sgreen "net.inet.ip.fw.verbose_limit"); 4902136071Sgreen } 4903136071Sgreen } 4904136071Sgreen break; 4905136071Sgreen 4906136071Sgreen case TOK_ALTQ: 4907136071Sgreen { 4908136071Sgreen ipfw_insn_altq *a = (ipfw_insn_altq *)cmd; 4909136071Sgreen 4910136071Sgreen NEED1("missing altq queue name"); 4911136071Sgreen if (have_altq) 4912136071Sgreen errx(EX_DATAERR, 4913136071Sgreen "altq cannot be specified more than once"); 4914136071Sgreen have_altq = (ipfw_insn *)a; 4915136071Sgreen cmd->len = F_INSN_SIZE(ipfw_insn_altq); 4916136071Sgreen cmd->opcode = O_ALTQ; 4917136071Sgreen fill_altq_qid(&a->qid, *av); 491898943Sluigi ac--; av++; 4919136071Sgreen } 4920136071Sgreen break; 4921136071Sgreen 4922158879Soleg case TOK_TAG: 4923159636Soleg case TOK_UNTAG: { 4924159636Soleg uint16_t tag; 4925159636Soleg 4926158879Soleg if (have_tag) 4927159636Soleg errx(EX_USAGE, "tag and untag cannot be " 4928159636Soleg "specified more than once"); 4929159636Soleg GET_UINT_ARG(tag, 1, 65534, i, rule_action_params); 4930158879Soleg have_tag = cmd; 4931159636Soleg fill_cmd(cmd, O_TAG, (i == TOK_TAG) ? 0: F_NOT, tag); 4932158879Soleg ac--; av++; 4933158879Soleg break; 4934159636Soleg } 4935158879Soleg 4936136071Sgreen default: 4937136071Sgreen abort(); 493898943Sluigi } 493998943Sluigi cmd = next_cmd(cmd); 494098943Sluigi } 494198943Sluigi 4942101116Sluigi if (have_state) /* must be a check-state, we are done */ 494398943Sluigi goto done; 494498943Sluigi 494598943Sluigi#define OR_START(target) \ 494698943Sluigi if (ac && (*av[0] == '(' || *av[0] == '{')) { \ 494798943Sluigi if (open_par) \ 494898943Sluigi errx(EX_USAGE, "nested \"(\" not allowed\n"); \ 4949101641Sluigi prev = NULL; \ 495098943Sluigi open_par = 1; \ 495198943Sluigi if ( (av[0])[1] == '\0') { \ 495298943Sluigi ac--; av++; \ 495398943Sluigi } else \ 495498943Sluigi (*av)++; \ 495598943Sluigi } \ 495698943Sluigi target: \ 495798943Sluigi 495898943Sluigi 495998943Sluigi#define CLOSE_PAR \ 496098943Sluigi if (open_par) { \ 496198943Sluigi if (ac && ( \ 4962140271Sbrooks strcmp(*av, ")") == 0 || \ 4963140271Sbrooks strcmp(*av, "}") == 0)) { \ 4964101641Sluigi prev = NULL; \ 496598943Sluigi open_par = 0; \ 496698943Sluigi ac--; av++; \ 496798943Sluigi } else \ 496898943Sluigi errx(EX_USAGE, "missing \")\"\n"); \ 496998943Sluigi } 4970106505Smaxim 497198943Sluigi#define NOT_BLOCK \ 4972140271Sbrooks if (ac && _substrcmp(*av, "not") == 0) { \ 497398943Sluigi if (cmd->len & F_NOT) \ 497498943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); \ 497598943Sluigi cmd->len |= F_NOT; \ 497698943Sluigi ac--; av++; \ 497798943Sluigi } 497898943Sluigi 497998943Sluigi#define OR_BLOCK(target) \ 4980140271Sbrooks if (ac && _substrcmp(*av, "or") == 0) { \ 498198943Sluigi if (prev == NULL || open_par == 0) \ 498298943Sluigi errx(EX_DATAERR, "invalid OR block"); \ 498398943Sluigi prev->len |= F_OR; \ 498498943Sluigi ac--; av++; \ 498598943Sluigi goto target; \ 498698943Sluigi } \ 498798943Sluigi CLOSE_PAR; 498898943Sluigi 4989102087Sluigi first_cmd = cmd; 4990102098Sluigi 4991102098Sluigi#if 0 499298943Sluigi /* 4993102087Sluigi * MAC addresses, optional. 4994102087Sluigi * If we have this, we skip the part "proto from src to dst" 4995102087Sluigi * and jump straight to the option parsing. 4996102087Sluigi */ 4997102087Sluigi NOT_BLOCK; 4998102087Sluigi NEED1("missing protocol"); 4999140271Sbrooks if (_substrcmp(*av, "MAC") == 0 || 5000140271Sbrooks _substrcmp(*av, "mac") == 0) { 5001102087Sluigi ac--; av++; /* the "MAC" keyword */ 5002102087Sluigi add_mac(cmd, ac, av); /* exits in case of errors */ 5003102087Sluigi cmd = next_cmd(cmd); 5004102087Sluigi ac -= 2; av += 2; /* dst-mac and src-mac */ 5005102087Sluigi NOT_BLOCK; 5006102087Sluigi NEED1("missing mac type"); 5007102087Sluigi if (add_mactype(cmd, ac, av[0])) 5008102087Sluigi cmd = next_cmd(cmd); 5009102087Sluigi ac--; av++; /* any or mac-type */ 5010102087Sluigi goto read_options; 5011102087Sluigi } 5012102098Sluigi#endif 5013102087Sluigi 5014102087Sluigi /* 501598943Sluigi * protocol, mandatory 501698943Sluigi */ 501798943Sluigi OR_START(get_proto); 501898943Sluigi NOT_BLOCK; 501998943Sluigi NEED1("missing protocol"); 5020152923Sume if (add_proto_compat(cmd, *av, &proto)) { 5021102087Sluigi av++; ac--; 5022147105Smlaier if (F_LEN(cmd) != 0) { 5023102087Sluigi prev = cmd; 5024102087Sluigi cmd = next_cmd(cmd); 5025102087Sluigi } 5026102098Sluigi } else if (first_cmd != cmd) { 5027116438Smaxim errx(EX_DATAERR, "invalid protocol ``%s''", *av); 5028102098Sluigi } else 5029102098Sluigi goto read_options; 503098943Sluigi OR_BLOCK(get_proto); 503198943Sluigi 503298943Sluigi /* 5033102087Sluigi * "from", mandatory 503498943Sluigi */ 5035140271Sbrooks if (!ac || _substrcmp(*av, "from") != 0) 503698943Sluigi errx(EX_USAGE, "missing ``from''"); 503798943Sluigi ac--; av++; 503898943Sluigi 503998943Sluigi /* 504098943Sluigi * source IP, mandatory 504198943Sluigi */ 504298943Sluigi OR_START(source_ip); 504398943Sluigi NOT_BLOCK; /* optional "not" */ 504498943Sluigi NEED1("missing source address"); 5045145246Sbrooks if (add_src(cmd, *av, proto)) { 5046102087Sluigi ac--; av++; 5047102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 5048102087Sluigi prev = cmd; 5049102087Sluigi cmd = next_cmd(cmd); 5050102087Sluigi } 5051145246Sbrooks } else 5052145246Sbrooks errx(EX_USAGE, "bad source address %s", *av); 505398943Sluigi OR_BLOCK(source_ip); 505498943Sluigi 505598943Sluigi /* 505698943Sluigi * source ports, optional 505798943Sluigi */ 505898943Sluigi NOT_BLOCK; /* optional "not" */ 5059101641Sluigi if (ac) { 5060140271Sbrooks if (_substrcmp(*av, "any") == 0 || 5061102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 5062102087Sluigi ac--; av++; 5063102087Sluigi if (F_LEN(cmd) != 0) 5064102087Sluigi cmd = next_cmd(cmd); 5065101641Sluigi } 506698943Sluigi } 506798943Sluigi 506898943Sluigi /* 5069102087Sluigi * "to", mandatory 507098943Sluigi */ 5071140271Sbrooks if (!ac || _substrcmp(*av, "to") != 0) 507298943Sluigi errx(EX_USAGE, "missing ``to''"); 507398943Sluigi av++; ac--; 507498943Sluigi 507598943Sluigi /* 507698943Sluigi * destination, mandatory 507798943Sluigi */ 507898943Sluigi OR_START(dest_ip); 507998943Sluigi NOT_BLOCK; /* optional "not" */ 508098943Sluigi NEED1("missing dst address"); 5081145246Sbrooks if (add_dst(cmd, *av, proto)) { 5082102087Sluigi ac--; av++; 5083102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 5084102087Sluigi prev = cmd; 5085102087Sluigi cmd = next_cmd(cmd); 5086102087Sluigi } 5087145246Sbrooks } else 5088145246Sbrooks errx( EX_USAGE, "bad destination address %s", *av); 508998943Sluigi OR_BLOCK(dest_ip); 509098943Sluigi 509198943Sluigi /* 509298943Sluigi * dest. ports, optional 509398943Sluigi */ 509498943Sluigi NOT_BLOCK; /* optional "not" */ 5095101641Sluigi if (ac) { 5096140271Sbrooks if (_substrcmp(*av, "any") == 0 || 5097102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 5098102087Sluigi ac--; av++; 5099102087Sluigi if (F_LEN(cmd) != 0) 5100102087Sluigi cmd = next_cmd(cmd); 5101101641Sluigi } 510298943Sluigi } 510398943Sluigi 510498943Sluigiread_options: 5105102087Sluigi if (ac && first_cmd == cmd) { 5106102087Sluigi /* 5107102087Sluigi * nothing specified so far, store in the rule to ease 5108102087Sluigi * printout later. 5109102087Sluigi */ 5110102087Sluigi rule->_pad = 1; 5111102087Sluigi } 511298943Sluigi prev = NULL; 511398943Sluigi while (ac) { 5114101641Sluigi char *s; 5115101641Sluigi ipfw_insn_u32 *cmd32; /* alias for cmd */ 511698943Sluigi 5117101641Sluigi s = *av; 5118101641Sluigi cmd32 = (ipfw_insn_u32 *)cmd; 5119101641Sluigi 512098943Sluigi if (*s == '!') { /* alternate syntax for NOT */ 512198943Sluigi if (cmd->len & F_NOT) 512298943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 512398943Sluigi cmd->len = F_NOT; 512498943Sluigi s++; 512598943Sluigi } 512698943Sluigi i = match_token(rule_options, s); 512798943Sluigi ac--; av++; 512898943Sluigi switch(i) { 512998943Sluigi case TOK_NOT: 513098943Sluigi if (cmd->len & F_NOT) 513198943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 513298943Sluigi cmd->len = F_NOT; 513398943Sluigi break; 513498943Sluigi 513598943Sluigi case TOK_OR: 5136101641Sluigi if (open_par == 0 || prev == NULL) 513798943Sluigi errx(EX_USAGE, "invalid \"or\" block\n"); 513898943Sluigi prev->len |= F_OR; 513998943Sluigi break; 5140101641Sluigi 5141101641Sluigi case TOK_STARTBRACE: 5142101641Sluigi if (open_par) 5143101641Sluigi errx(EX_USAGE, "+nested \"(\" not allowed\n"); 5144101641Sluigi open_par = 1; 5145101641Sluigi break; 5146101641Sluigi 5147101641Sluigi case TOK_ENDBRACE: 5148101641Sluigi if (!open_par) 5149101641Sluigi errx(EX_USAGE, "+missing \")\"\n"); 5150101641Sluigi open_par = 0; 5151102087Sluigi prev = NULL; 5152101641Sluigi break; 5153101641Sluigi 515498943Sluigi case TOK_IN: 515598943Sluigi fill_cmd(cmd, O_IN, 0, 0); 515698943Sluigi break; 515798943Sluigi 515898943Sluigi case TOK_OUT: 515998943Sluigi cmd->len ^= F_NOT; /* toggle F_NOT */ 516098943Sluigi fill_cmd(cmd, O_IN, 0, 0); 516198943Sluigi break; 516298943Sluigi 5163136073Sgreen case TOK_DIVERTED: 5164136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 3); 5165136073Sgreen break; 5166136073Sgreen 5167136073Sgreen case TOK_DIVERTEDLOOPBACK: 5168136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 1); 5169136073Sgreen break; 5170136073Sgreen 5171136073Sgreen case TOK_DIVERTEDOUTPUT: 5172136073Sgreen fill_cmd(cmd, O_DIVERTED, 0, 2); 5173136073Sgreen break; 5174136073Sgreen 517598943Sluigi case TOK_FRAG: 517698943Sluigi fill_cmd(cmd, O_FRAG, 0, 0); 517798943Sluigi break; 517898943Sluigi 517998943Sluigi case TOK_LAYER2: 518098943Sluigi fill_cmd(cmd, O_LAYER2, 0, 0); 518198943Sluigi break; 518298943Sluigi 518398943Sluigi case TOK_XMIT: 518498943Sluigi case TOK_RECV: 518598943Sluigi case TOK_VIA: 518698943Sluigi NEED1("recv, xmit, via require interface name" 518798943Sluigi " or address"); 518898943Sluigi fill_iface((ipfw_insn_if *)cmd, av[0]); 518998943Sluigi ac--; av++; 519098943Sluigi if (F_LEN(cmd) == 0) /* not a valid address */ 519198943Sluigi break; 519298943Sluigi if (i == TOK_XMIT) 519398943Sluigi cmd->opcode = O_XMIT; 519498943Sluigi else if (i == TOK_RECV) 519598943Sluigi cmd->opcode = O_RECV; 519698943Sluigi else if (i == TOK_VIA) 519798943Sluigi cmd->opcode = O_VIA; 519898943Sluigi break; 519998943Sluigi 520099475Sluigi case TOK_ICMPTYPES: 520199475Sluigi NEED1("icmptypes requires list of types"); 520299475Sluigi fill_icmptypes((ipfw_insn_u32 *)cmd, *av); 520399475Sluigi av++; ac--; 520499475Sluigi break; 5205145246Sbrooks 5206145246Sbrooks case TOK_ICMP6TYPES: 5207145246Sbrooks NEED1("icmptypes requires list of types"); 5208145246Sbrooks fill_icmp6types((ipfw_insn_icmp6 *)cmd, *av); 5209145246Sbrooks av++; ac--; 5210145246Sbrooks break; 521199475Sluigi 521298943Sluigi case TOK_IPTTL: 521398943Sluigi NEED1("ipttl requires TTL"); 5214116690Sluigi if (strpbrk(*av, "-,")) { 5215116690Sluigi if (!add_ports(cmd, *av, 0, O_IPTTL)) 5216116690Sluigi errx(EX_DATAERR, "invalid ipttl %s", *av); 5217116690Sluigi } else 5218116690Sluigi fill_cmd(cmd, O_IPTTL, 0, strtoul(*av, NULL, 0)); 521998943Sluigi ac--; av++; 522098943Sluigi break; 522198943Sluigi 522298943Sluigi case TOK_IPID: 5223116690Sluigi NEED1("ipid requires id"); 5224116690Sluigi if (strpbrk(*av, "-,")) { 5225116690Sluigi if (!add_ports(cmd, *av, 0, O_IPID)) 5226116690Sluigi errx(EX_DATAERR, "invalid ipid %s", *av); 5227116690Sluigi } else 5228116690Sluigi fill_cmd(cmd, O_IPID, 0, strtoul(*av, NULL, 0)); 522998943Sluigi ac--; av++; 523098943Sluigi break; 523198943Sluigi 523298943Sluigi case TOK_IPLEN: 523398943Sluigi NEED1("iplen requires length"); 5234116690Sluigi if (strpbrk(*av, "-,")) { 5235116690Sluigi if (!add_ports(cmd, *av, 0, O_IPLEN)) 5236116690Sluigi errx(EX_DATAERR, "invalid ip len %s", *av); 5237116690Sluigi } else 5238116690Sluigi fill_cmd(cmd, O_IPLEN, 0, strtoul(*av, NULL, 0)); 523998943Sluigi ac--; av++; 524098943Sluigi break; 524198943Sluigi 524298943Sluigi case TOK_IPVER: 524398943Sluigi NEED1("ipver requires version"); 524498943Sluigi fill_cmd(cmd, O_IPVER, 0, strtoul(*av, NULL, 0)); 524598943Sluigi ac--; av++; 524698943Sluigi break; 524798943Sluigi 524899475Sluigi case TOK_IPPRECEDENCE: 524999475Sluigi NEED1("ipprecedence requires value"); 525099475Sluigi fill_cmd(cmd, O_IPPRECEDENCE, 0, 525199475Sluigi (strtoul(*av, NULL, 0) & 7) << 5); 525299475Sluigi ac--; av++; 525399475Sluigi break; 525499475Sluigi 525598943Sluigi case TOK_IPOPTS: 525698943Sluigi NEED1("missing argument for ipoptions"); 5257101116Sluigi fill_flags(cmd, O_IPOPT, f_ipopts, *av); 525898943Sluigi ac--; av++; 525998943Sluigi break; 526098943Sluigi 526199475Sluigi case TOK_IPTOS: 526299475Sluigi NEED1("missing argument for iptos"); 5263101116Sluigi fill_flags(cmd, O_IPTOS, f_iptos, *av); 526499475Sluigi ac--; av++; 526599475Sluigi break; 526699475Sluigi 526798943Sluigi case TOK_UID: 526898943Sluigi NEED1("uid requires argument"); 526998943Sluigi { 527098943Sluigi char *end; 527198943Sluigi uid_t uid; 527298943Sluigi struct passwd *pwd; 527398943Sluigi 527498943Sluigi cmd->opcode = O_UID; 527598943Sluigi uid = strtoul(*av, &end, 0); 527698943Sluigi pwd = (*end == '\0') ? getpwuid(uid) : getpwnam(*av); 527798943Sluigi if (pwd == NULL) 527898943Sluigi errx(EX_DATAERR, "uid \"%s\" nonexistent", *av); 5279106504Smaxim cmd32->d[0] = pwd->pw_uid; 5280135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 528198943Sluigi ac--; av++; 528298943Sluigi } 528398943Sluigi break; 528498943Sluigi 528598943Sluigi case TOK_GID: 528698943Sluigi NEED1("gid requires argument"); 528798943Sluigi { 528898943Sluigi char *end; 528998943Sluigi gid_t gid; 529098943Sluigi struct group *grp; 529198943Sluigi 529298943Sluigi cmd->opcode = O_GID; 529398943Sluigi gid = strtoul(*av, &end, 0); 529498943Sluigi grp = (*end == '\0') ? getgrgid(gid) : getgrnam(*av); 529598943Sluigi if (grp == NULL) 529698943Sluigi errx(EX_DATAERR, "gid \"%s\" nonexistent", *av); 5297106504Smaxim cmd32->d[0] = grp->gr_gid; 5298135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 529998943Sluigi ac--; av++; 530098943Sluigi } 530198943Sluigi break; 530298943Sluigi 5303133600Scsjp case TOK_JAIL: 5304133600Scsjp NEED1("jail requires argument"); 5305133600Scsjp { 5306133600Scsjp char *end; 5307133600Scsjp int jid; 5308133600Scsjp 5309133600Scsjp cmd->opcode = O_JAIL; 5310133600Scsjp jid = (int)strtol(*av, &end, 0); 5311133600Scsjp if (jid < 0 || *end != '\0') 5312133600Scsjp errx(EX_DATAERR, "jail requires prison ID"); 5313135554Scsjp cmd32->d[0] = (uint32_t)jid; 5314135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 5315133600Scsjp ac--; av++; 5316133600Scsjp } 5317133600Scsjp break; 5318133600Scsjp 531998943Sluigi case TOK_ESTAB: 532098943Sluigi fill_cmd(cmd, O_ESTAB, 0, 0); 532198943Sluigi break; 532298943Sluigi 532398943Sluigi case TOK_SETUP: 532498943Sluigi fill_cmd(cmd, O_TCPFLAGS, 0, 532598943Sluigi (TH_SYN) | ( (TH_ACK) & 0xff) <<8 ); 532698943Sluigi break; 532798943Sluigi 5328136075Sgreen case TOK_TCPDATALEN: 5329136075Sgreen NEED1("tcpdatalen requires length"); 5330136075Sgreen if (strpbrk(*av, "-,")) { 5331136075Sgreen if (!add_ports(cmd, *av, 0, O_TCPDATALEN)) 5332136075Sgreen errx(EX_DATAERR, "invalid tcpdata len %s", *av); 5333136075Sgreen } else 5334136075Sgreen fill_cmd(cmd, O_TCPDATALEN, 0, 5335136075Sgreen strtoul(*av, NULL, 0)); 5336136075Sgreen ac--; av++; 5337136075Sgreen break; 5338136075Sgreen 533998943Sluigi case TOK_TCPOPTS: 534098943Sluigi NEED1("missing argument for tcpoptions"); 534198943Sluigi fill_flags(cmd, O_TCPOPTS, f_tcpopts, *av); 534298943Sluigi ac--; av++; 534398943Sluigi break; 534498943Sluigi 534598943Sluigi case TOK_TCPSEQ: 534698943Sluigi case TOK_TCPACK: 534798943Sluigi NEED1("tcpseq/tcpack requires argument"); 534898943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 534998943Sluigi cmd->opcode = (i == TOK_TCPSEQ) ? O_TCPSEQ : O_TCPACK; 535098943Sluigi cmd32->d[0] = htonl(strtoul(*av, NULL, 0)); 535198943Sluigi ac--; av++; 535298943Sluigi break; 535398943Sluigi 535498943Sluigi case TOK_TCPWIN: 535598943Sluigi NEED1("tcpwin requires length"); 535698943Sluigi fill_cmd(cmd, O_TCPWIN, 0, 535798943Sluigi htons(strtoul(*av, NULL, 0))); 535898943Sluigi ac--; av++; 535998943Sluigi break; 536098943Sluigi 536198943Sluigi case TOK_TCPFLAGS: 536298943Sluigi NEED1("missing argument for tcpflags"); 536398943Sluigi cmd->opcode = O_TCPFLAGS; 536498943Sluigi fill_flags(cmd, O_TCPFLAGS, f_tcpflags, *av); 536598943Sluigi ac--; av++; 536698943Sluigi break; 536798943Sluigi 536898943Sluigi case TOK_KEEPSTATE: 5369101641Sluigi if (open_par) 5370101641Sluigi errx(EX_USAGE, "keep-state cannot be part " 5371101641Sluigi "of an or block"); 537299909Sluigi if (have_state) 5373101116Sluigi errx(EX_USAGE, "only one of keep-state " 537499909Sluigi "and limit is allowed"); 5375101116Sluigi have_state = cmd; 537698943Sluigi fill_cmd(cmd, O_KEEP_STATE, 0, 0); 537798943Sluigi break; 537898943Sluigi 5379159636Soleg case TOK_LIMIT: { 5380159636Soleg ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 5381159636Soleg int val; 5382159636Soleg 5383101641Sluigi if (open_par) 5384159636Soleg errx(EX_USAGE, 5385159636Soleg "limit cannot be part of an or block"); 538699909Sluigi if (have_state) 5387168819Smaxim errx(EX_USAGE, "only one of keep-state and " 5388159636Soleg "limit is allowed"); 5389101116Sluigi have_state = cmd; 539098943Sluigi 539198943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_limit); 539298943Sluigi cmd->opcode = O_LIMIT; 5393159636Soleg c->limit_mask = c->conn_limit = 0; 539498943Sluigi 5395159636Soleg while (ac > 0) { 5396159636Soleg if ((val = match_token(limit_masks, *av)) <= 0) 539798943Sluigi break; 539898943Sluigi c->limit_mask |= val; 539998943Sluigi ac--; av++; 540098943Sluigi } 5401159636Soleg 540298943Sluigi if (c->limit_mask == 0) 5403159636Soleg errx(EX_USAGE, "limit: missing limit mask"); 5404159636Soleg 5405159636Soleg GET_UINT_ARG(c->conn_limit, 1, 65534, TOK_LIMIT, 5406159636Soleg rule_options); 5407159636Soleg 540898943Sluigi ac--; av++; 540998943Sluigi break; 5410159636Soleg } 541198943Sluigi 5412102087Sluigi case TOK_PROTO: 5413102087Sluigi NEED1("missing protocol"); 5414145246Sbrooks if (add_proto(cmd, *av, &proto)) { 5415102087Sluigi ac--; av++; 5416102098Sluigi } else 5417116438Smaxim errx(EX_DATAERR, "invalid protocol ``%s''", 5418116438Smaxim *av); 5419102087Sluigi break; 5420106505Smaxim 5421102087Sluigi case TOK_SRCIP: 5422102087Sluigi NEED1("missing source IP"); 5423102087Sluigi if (add_srcip(cmd, *av)) { 5424102087Sluigi ac--; av++; 5425102087Sluigi } 5426102087Sluigi break; 5427102087Sluigi 5428102087Sluigi case TOK_DSTIP: 5429102087Sluigi NEED1("missing destination IP"); 5430102087Sluigi if (add_dstip(cmd, *av)) { 5431102087Sluigi ac--; av++; 5432102087Sluigi } 5433102087Sluigi break; 5434102087Sluigi 5435145246Sbrooks case TOK_SRCIP6: 5436145246Sbrooks NEED1("missing source IP6"); 5437145246Sbrooks if (add_srcip6(cmd, *av)) { 5438145246Sbrooks ac--; av++; 5439145246Sbrooks } 5440145246Sbrooks break; 5441145246Sbrooks 5442145246Sbrooks case TOK_DSTIP6: 5443145246Sbrooks NEED1("missing destination IP6"); 5444145246Sbrooks if (add_dstip6(cmd, *av)) { 5445145246Sbrooks ac--; av++; 5446145246Sbrooks } 5447145246Sbrooks break; 5448145246Sbrooks 5449102087Sluigi case TOK_SRCPORT: 5450102087Sluigi NEED1("missing source port"); 5451140271Sbrooks if (_substrcmp(*av, "any") == 0 || 5452102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 5453102087Sluigi ac--; av++; 5454102087Sluigi } else 5455102087Sluigi errx(EX_DATAERR, "invalid source port %s", *av); 5456102087Sluigi break; 5457102087Sluigi 5458102087Sluigi case TOK_DSTPORT: 5459102087Sluigi NEED1("missing destination port"); 5460140271Sbrooks if (_substrcmp(*av, "any") == 0 || 5461102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 5462102087Sluigi ac--; av++; 5463102087Sluigi } else 5464102087Sluigi errx(EX_DATAERR, "invalid destination port %s", 5465102087Sluigi *av); 5466102087Sluigi break; 5467102087Sluigi 5468102087Sluigi case TOK_MAC: 5469102087Sluigi if (add_mac(cmd, ac, av)) { 5470102087Sluigi ac -= 2; av += 2; 5471102087Sluigi } 5472102087Sluigi break; 5473102087Sluigi 5474102087Sluigi case TOK_MACTYPE: 5475102087Sluigi NEED1("missing mac type"); 5476102087Sluigi if (!add_mactype(cmd, ac, *av)) 5477116438Smaxim errx(EX_DATAERR, "invalid mac type %s", *av); 5478102087Sluigi ac--; av++; 5479102087Sluigi break; 5480102087Sluigi 5481112250Scjc case TOK_VERREVPATH: 5482112250Scjc fill_cmd(cmd, O_VERREVPATH, 0, 0); 5483112250Scjc break; 5484116919Sluigi 5485128575Sandre case TOK_VERSRCREACH: 5486128575Sandre fill_cmd(cmd, O_VERSRCREACH, 0, 0); 5487128575Sandre break; 5488128575Sandre 5489133387Sandre case TOK_ANTISPOOF: 5490133387Sandre fill_cmd(cmd, O_ANTISPOOF, 0, 0); 5491133387Sandre break; 5492133387Sandre 5493117241Sluigi case TOK_IPSEC: 5494117241Sluigi fill_cmd(cmd, O_IPSEC, 0, 0); 5495117241Sluigi break; 5496117241Sluigi 5497145246Sbrooks case TOK_IPV6: 5498145246Sbrooks fill_cmd(cmd, O_IP6, 0, 0); 5499145246Sbrooks break; 5500145246Sbrooks 5501146894Smlaier case TOK_IPV4: 5502146894Smlaier fill_cmd(cmd, O_IP4, 0, 0); 5503146894Smlaier break; 5504146894Smlaier 5505145246Sbrooks case TOK_EXT6HDR: 5506145246Sbrooks fill_ext6hdr( cmd, *av ); 5507145246Sbrooks ac--; av++; 5508145246Sbrooks break; 5509145246Sbrooks 5510145246Sbrooks case TOK_FLOWID: 5511145246Sbrooks if (proto != IPPROTO_IPV6 ) 5512145246Sbrooks errx( EX_USAGE, "flow-id filter is active " 5513145246Sbrooks "only for ipv6 protocol\n"); 5514145246Sbrooks fill_flow6( (ipfw_insn_u32 *) cmd, *av ); 5515145246Sbrooks ac--; av++; 5516145246Sbrooks break; 5517145246Sbrooks 5518117469Sluigi case TOK_COMMENT: 5519117469Sluigi fill_comment(cmd, ac, av); 5520117469Sluigi av += ac; 5521117469Sluigi ac = 0; 5522117469Sluigi break; 5523117469Sluigi 5524158879Soleg case TOK_TAGGED: 5525159636Soleg if (ac > 0 && strpbrk(*av, "-,")) { 5526158879Soleg if (!add_ports(cmd, *av, 0, O_TAGGED)) 5527159636Soleg errx(EX_DATAERR, "tagged: invalid tag" 5528159636Soleg " list: %s", *av); 5529158879Soleg } 5530159636Soleg else { 5531159636Soleg uint16_t tag; 5532159636Soleg 5533159636Soleg GET_UINT_ARG(tag, 1, 65534, TOK_TAGGED, 5534159636Soleg rule_options); 5535159636Soleg fill_cmd(cmd, O_TAGGED, 0, tag); 5536159636Soleg } 5537158879Soleg ac--; av++; 5538158879Soleg break; 5539158879Soleg 554098943Sluigi default: 554198943Sluigi errx(EX_USAGE, "unrecognised option [%d] %s\n", i, s); 554298943Sluigi } 554398943Sluigi if (F_LEN(cmd) > 0) { /* prepare to advance */ 554498943Sluigi prev = cmd; 554598943Sluigi cmd = next_cmd(cmd); 554698943Sluigi } 554798943Sluigi } 554898943Sluigi 554998943Sluigidone: 555098943Sluigi /* 555198943Sluigi * Now copy stuff into the rule. 555298943Sluigi * If we have a keep-state option, the first instruction 555398943Sluigi * must be a PROBE_STATE (which is generated here). 555498943Sluigi * If we have a LOG option, it was stored as the first command, 555598943Sluigi * and now must be moved to the top of the action part. 555698943Sluigi */ 555798943Sluigi dst = (ipfw_insn *)rule->cmd; 555898943Sluigi 555998943Sluigi /* 5560107289Sluigi * First thing to write into the command stream is the match probability. 5561107289Sluigi */ 5562107289Sluigi if (match_prob != 1) { /* 1 means always match */ 5563107289Sluigi dst->opcode = O_PROB; 5564107289Sluigi dst->len = 2; 5565107289Sluigi *((int32_t *)(dst+1)) = (int32_t)(match_prob * 0x7fffffff); 5566107289Sluigi dst += dst->len; 5567107289Sluigi } 5568107289Sluigi 5569107289Sluigi /* 557098943Sluigi * generate O_PROBE_STATE if necessary 557198943Sluigi */ 5572101116Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 557398943Sluigi fill_cmd(dst, O_PROBE_STATE, 0, 0); 557498943Sluigi dst = next_cmd(dst); 557598943Sluigi } 5576158879Soleg 5577158879Soleg /* copy all commands but O_LOG, O_KEEP_STATE, O_LIMIT, O_ALTQ, O_TAG */ 557898943Sluigi for (src = (ipfw_insn *)cmdbuf; src != cmd; src += i) { 557998943Sluigi i = F_LEN(src); 558098943Sluigi 5581101116Sluigi switch (src->opcode) { 5582101116Sluigi case O_LOG: 5583101116Sluigi case O_KEEP_STATE: 5584101116Sluigi case O_LIMIT: 5585136071Sgreen case O_ALTQ: 5586158879Soleg case O_TAG: 5587101116Sluigi break; 5588101116Sluigi default: 5589117328Sluigi bcopy(src, dst, i * sizeof(uint32_t)); 559098943Sluigi dst += i; 559198943Sluigi } 559298943Sluigi } 559398943Sluigi 559498943Sluigi /* 5595101116Sluigi * put back the have_state command as last opcode 5596101116Sluigi */ 5597101295Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 5598101116Sluigi i = F_LEN(have_state); 5599117328Sluigi bcopy(have_state, dst, i * sizeof(uint32_t)); 5600101116Sluigi dst += i; 5601101116Sluigi } 5602101116Sluigi /* 560398943Sluigi * start action section 560498943Sluigi */ 560598943Sluigi rule->act_ofs = dst - rule->cmd; 560698943Sluigi 5607158879Soleg /* put back O_LOG, O_ALTQ, O_TAG if necessary */ 5608136071Sgreen if (have_log) { 5609136071Sgreen i = F_LEN(have_log); 5610136071Sgreen bcopy(have_log, dst, i * sizeof(uint32_t)); 561198943Sluigi dst += i; 561298943Sluigi } 5613136071Sgreen if (have_altq) { 5614136071Sgreen i = F_LEN(have_altq); 5615136071Sgreen bcopy(have_altq, dst, i * sizeof(uint32_t)); 5616136071Sgreen dst += i; 5617136071Sgreen } 5618158879Soleg if (have_tag) { 5619158879Soleg i = F_LEN(have_tag); 5620158879Soleg bcopy(have_tag, dst, i * sizeof(uint32_t)); 5621158879Soleg dst += i; 5622158879Soleg } 562398943Sluigi /* 562498943Sluigi * copy all other actions 562598943Sluigi */ 562698943Sluigi for (src = (ipfw_insn *)actbuf; src != action; src += i) { 562798943Sluigi i = F_LEN(src); 5628117328Sluigi bcopy(src, dst, i * sizeof(uint32_t)); 562998943Sluigi dst += i; 563098943Sluigi } 563198943Sluigi 5632117328Sluigi rule->cmd_len = (uint32_t *)dst - (uint32_t *)(rule->cmd); 5633117469Sluigi i = (char *)dst - (char *)rule; 5634119740Stmm if (do_cmd(IP_FW_ADD, rule, (uintptr_t)&i) == -1) 563598943Sluigi err(EX_UNAVAILABLE, "getsockopt(%s)", "IP_FW_ADD"); 563698943Sluigi if (!do_quiet) 5637117469Sluigi show_ipfw(rule, 0, 0); 563898943Sluigi} 563998943Sluigi 564098943Sluigistatic void 5641117328Sluigizero(int ac, char *av[], int optname /* IP_FW_ZERO or IP_FW_RESETLOG */) 564298943Sluigi{ 564398943Sluigi int rulenum; 564498943Sluigi int failed = EX_OK; 5645117469Sluigi char const *name = optname == IP_FW_ZERO ? "ZERO" : "RESETLOG"; 564698943Sluigi 564798943Sluigi av++; ac--; 564898943Sluigi 564998943Sluigi if (!ac) { 565098943Sluigi /* clear all entries */ 5651117328Sluigi if (do_cmd(optname, NULL, 0) < 0) 5652117328Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_FW_%s)", name); 565398943Sluigi if (!do_quiet) 5654117328Sluigi printf("%s.\n", optname == IP_FW_ZERO ? 5655117328Sluigi "Accounting cleared":"Logging counts reset"); 565698943Sluigi 565798943Sluigi return; 565898943Sluigi } 565998943Sluigi 566098943Sluigi while (ac) { 566198943Sluigi /* Rule number */ 566298943Sluigi if (isdigit(**av)) { 566398943Sluigi rulenum = atoi(*av); 566498943Sluigi av++; 566598943Sluigi ac--; 5666117328Sluigi if (do_cmd(optname, &rulenum, sizeof rulenum)) { 5667117328Sluigi warn("rule %u: setsockopt(IP_FW_%s)", 5668117328Sluigi rulenum, name); 566998943Sluigi failed = EX_UNAVAILABLE; 567098943Sluigi } else if (!do_quiet) 5671117328Sluigi printf("Entry %d %s.\n", rulenum, 5672117328Sluigi optname == IP_FW_ZERO ? 5673117328Sluigi "cleared" : "logging count reset"); 567498943Sluigi } else { 567598943Sluigi errx(EX_USAGE, "invalid rule number ``%s''", *av); 567698943Sluigi } 567798943Sluigi } 567898943Sluigi if (failed != EX_OK) 567998943Sluigi exit(failed); 568098943Sluigi} 568198943Sluigi 568298943Sluigistatic void 5683117544Sluigiflush(int force) 568498943Sluigi{ 568598943Sluigi int cmd = do_pipe ? IP_DUMMYNET_FLUSH : IP_FW_FLUSH; 568698943Sluigi 5687117544Sluigi if (!force && !do_quiet) { /* need to ask user */ 568898943Sluigi int c; 568998943Sluigi 569098943Sluigi printf("Are you sure? [yn] "); 569198943Sluigi fflush(stdout); 569298943Sluigi do { 569398943Sluigi c = toupper(getc(stdin)); 569498943Sluigi while (c != '\n' && getc(stdin) != '\n') 569598943Sluigi if (feof(stdin)) 569698943Sluigi return; /* and do not flush */ 569798943Sluigi } while (c != 'Y' && c != 'N'); 569898943Sluigi printf("\n"); 569998943Sluigi if (c == 'N') /* user said no */ 570098943Sluigi return; 570198943Sluigi } 5702117328Sluigi if (do_cmd(cmd, NULL, 0) < 0) 570398943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_%s_FLUSH)", 570498943Sluigi do_pipe ? "DUMMYNET" : "FW"); 570598943Sluigi if (!do_quiet) 570698943Sluigi printf("Flushed all %s.\n", do_pipe ? "pipes" : "rules"); 570798943Sluigi} 570898943Sluigi 5709117469Sluigi/* 5710117544Sluigi * Free a the (locally allocated) copy of command line arguments. 5711117469Sluigi */ 5712117544Sluigistatic void 5713117544Sluigifree_args(int ac, char **av) 5714117544Sluigi{ 5715117544Sluigi int i; 5716117544Sluigi 5717117544Sluigi for (i=0; i < ac; i++) 5718117544Sluigi free(av[i]); 5719117544Sluigi free(av); 5720117544Sluigi} 5721117544Sluigi 5722117544Sluigi/* 5723130281Sru * This one handles all table-related commands 5724130281Sru * ipfw table N add addr[/masklen] [value] 5725130281Sru * ipfw table N delete addr[/masklen] 5726130281Sru * ipfw table N flush 5727130281Sru * ipfw table N list 5728130281Sru */ 5729130281Srustatic void 5730130281Srutable_handler(int ac, char *av[]) 5731130281Sru{ 5732130281Sru ipfw_table_entry ent; 5733130281Sru ipfw_table *tbl; 5734130281Sru int do_add; 5735130281Sru char *p; 5736130281Sru socklen_t l; 5737130281Sru uint32_t a; 5738130281Sru 5739130281Sru ac--; av++; 5740130281Sru if (ac && isdigit(**av)) { 5741130281Sru ent.tbl = atoi(*av); 5742130281Sru ac--; av++; 5743130281Sru } else 5744130281Sru errx(EX_USAGE, "table number required"); 5745130281Sru NEED1("table needs command"); 5746140271Sbrooks if (_substrcmp(*av, "add") == 0 || 5747140271Sbrooks _substrcmp(*av, "delete") == 0) { 5748130281Sru do_add = **av == 'a'; 5749130281Sru ac--; av++; 5750130281Sru if (!ac) 5751130281Sru errx(EX_USAGE, "IP address required"); 5752130281Sru p = strchr(*av, '/'); 5753130281Sru if (p) { 5754130281Sru *p++ = '\0'; 5755130281Sru ent.masklen = atoi(p); 5756130281Sru if (ent.masklen > 32) 5757130281Sru errx(EX_DATAERR, "bad width ``%s''", p); 5758130281Sru } else 5759130281Sru ent.masklen = 32; 5760130281Sru if (lookup_host(*av, (struct in_addr *)&ent.addr) != 0) 5761130298Sru errx(EX_NOHOST, "hostname ``%s'' unknown", *av); 5762130281Sru ac--; av++; 5763161424Sjulian if (do_add && ac) { 5764161424Sjulian unsigned int tval; 5765161424Sjulian /* isdigit is a bit of a hack here.. */ 5766161424Sjulian if (strchr(*av, (int)'.') == NULL && isdigit(**av)) { 5767161424Sjulian ent.value = strtoul(*av, NULL, 0); 5768161424Sjulian } else { 5769161424Sjulian if (lookup_host(*av, (struct in_addr *)&tval) == 0) { 5770161424Sjulian /* The value must be stored in host order * 5771161424Sjulian * so that the values < 65k can be distinguished */ 5772161424Sjulian ent.value = ntohl(tval); 5773161424Sjulian } else { 5774161424Sjulian errx(EX_NOHOST, "hostname ``%s'' unknown", *av); 5775161424Sjulian } 5776161424Sjulian } 5777161424Sjulian } else 5778130281Sru ent.value = 0; 5779130281Sru if (do_cmd(do_add ? IP_FW_TABLE_ADD : IP_FW_TABLE_DEL, 5780157335Sjulian &ent, sizeof(ent)) < 0) { 5781155639Sjulian /* If running silent, don't bomb out on these errors. */ 5782155639Sjulian if (!(do_quiet && (errno == (do_add ? EEXIST : ESRCH)))) 5783155639Sjulian err(EX_OSERR, "setsockopt(IP_FW_TABLE_%s)", 5784155639Sjulian do_add ? "ADD" : "DEL"); 5785155639Sjulian /* In silent mode, react to a failed add by deleting */ 5786157332Sjulian if (do_add) { 5787155639Sjulian do_cmd(IP_FW_TABLE_DEL, &ent, sizeof(ent)); 5788155639Sjulian if (do_cmd(IP_FW_TABLE_ADD, 5789155639Sjulian &ent, sizeof(ent)) < 0) 5790155639Sjulian err(EX_OSERR, 5791155639Sjulian "setsockopt(IP_FW_TABLE_ADD)"); 5792157332Sjulian } 5793157335Sjulian } 5794140271Sbrooks } else if (_substrcmp(*av, "flush") == 0) { 5795130281Sru if (do_cmd(IP_FW_TABLE_FLUSH, &ent.tbl, sizeof(ent.tbl)) < 0) 5796130281Sru err(EX_OSERR, "setsockopt(IP_FW_TABLE_FLUSH)"); 5797140271Sbrooks } else if (_substrcmp(*av, "list") == 0) { 5798130281Sru a = ent.tbl; 5799130281Sru l = sizeof(a); 5800130281Sru if (do_cmd(IP_FW_TABLE_GETSIZE, &a, (uintptr_t)&l) < 0) 5801130281Sru err(EX_OSERR, "getsockopt(IP_FW_TABLE_GETSIZE)"); 5802130281Sru l = sizeof(*tbl) + a * sizeof(ipfw_table_entry); 5803130281Sru tbl = malloc(l); 5804130281Sru if (tbl == NULL) 5805130281Sru err(EX_OSERR, "malloc"); 5806130281Sru tbl->tbl = ent.tbl; 5807130281Sru if (do_cmd(IP_FW_TABLE_LIST, tbl, (uintptr_t)&l) < 0) 5808130281Sru err(EX_OSERR, "getsockopt(IP_FW_TABLE_LIST)"); 5809130281Sru for (a = 0; a < tbl->cnt; a++) { 5810161424Sjulian /* Heuristic to print it the right way */ 5811161456Sjulian /* values < 64k are printed as numbers */ 5812161424Sjulian unsigned int tval; 5813161424Sjulian tval = tbl->ent[a].value; 5814161424Sjulian if (tval > 0xffff) { 5815161424Sjulian char tbuf[128]; 5816161456Sjulian strncpy(tbuf, inet_ntoa(*(struct in_addr *) 5817161456Sjulian &tbl->ent[a].addr), 127); 5818161424Sjulian /* inet_ntoa expects host order */ 5819161424Sjulian tval = htonl(tval); 5820161456Sjulian printf("%s/%u %s\n", tbuf, tbl->ent[a].masklen, 5821161456Sjulian inet_ntoa(*(struct in_addr *)&tval)); 5822161424Sjulian } else { 5823161424Sjulian printf("%s/%u %u\n", 5824161456Sjulian inet_ntoa(*(struct in_addr *)&tbl->ent[a].addr), 5825161456Sjulian tbl->ent[a].masklen, tbl->ent[a].value); 5826161424Sjulian } 5827130281Sru } 5828130281Sru } else 5829130281Sru errx(EX_USAGE, "invalid table command %s", *av); 5830130281Sru} 5831130281Sru 5832165648Spisostatic void 5833165648Spisoshow_nat(int ac, char **av) { 5834165648Spiso struct cfg_nat *n; 5835165648Spiso struct cfg_redir *e; 5836165648Spiso int cmd, i, nbytes, do_cfg, do_rule, frule, lrule, nalloc, size; 5837165648Spiso int nat_cnt, r; 5838165648Spiso uint8_t *data, *p; 5839165648Spiso char **lav, *endptr; 5840165648Spiso 5841165648Spiso do_rule = 0; 5842165648Spiso nalloc = 1024; 5843165648Spiso size = 0; 5844165648Spiso data = NULL; 5845165648Spiso ac--; av++; 5846165648Spiso 5847165648Spiso /* Parse parameters. */ 5848165648Spiso for (cmd = IP_FW_NAT_GET_LOG, do_cfg = 0; ac != 0; ac--, av++) { 5849165648Spiso if (!strncmp(av[0], "config", strlen(av[0]))) { 5850165648Spiso cmd = IP_FW_NAT_GET_CONFIG, do_cfg = 1; 5851165648Spiso continue; 5852165648Spiso } 5853165648Spiso /* Convert command line rule #. */ 5854165648Spiso frule = lrule = strtoul(av[0], &endptr, 10); 5855165648Spiso if (*endptr == '-') 5856165648Spiso lrule = strtoul(endptr+1, &endptr, 10); 5857165648Spiso if (lrule == 0) 5858165648Spiso err(EX_USAGE, "invalid rule number: %s", av[0]); 5859165648Spiso do_rule = 1; 5860165648Spiso } 5861165648Spiso 5862165648Spiso nbytes = nalloc; 5863165648Spiso while (nbytes >= nalloc) { 5864165648Spiso nalloc = nalloc * 2; 5865165648Spiso nbytes = nalloc; 5866165648Spiso if ((data = realloc(data, nbytes)) == NULL) 5867165648Spiso err(EX_OSERR, "realloc"); 5868165648Spiso if (do_cmd(cmd, data, (uintptr_t)&nbytes) < 0) 5869165648Spiso err(EX_OSERR, "getsockopt(IP_FW_GET_%s)", 5870165648Spiso (cmd == IP_FW_NAT_GET_LOG) ? "LOG" : "CONFIG"); 5871165648Spiso } 5872165648Spiso if (nbytes == 0) 5873165648Spiso exit(0); 5874165648Spiso if (do_cfg) { 5875165648Spiso nat_cnt = *((int *)data); 5876165648Spiso for (i = sizeof(nat_cnt); nat_cnt; nat_cnt--) { 5877165648Spiso n = (struct cfg_nat *)&data[i]; 5878165648Spiso if (do_rule) { 5879165648Spiso if (!(frule <= n->id && lrule >= n->id)) 5880165648Spiso continue; 5881165648Spiso } 5882165648Spiso print_nat_config(&data[i]); 5883165648Spiso i += sizeof(struct cfg_nat); 5884165648Spiso e = (struct cfg_redir *)&data[i]; 5885165648Spiso if (e->mode == REDIR_ADDR || e->mode == REDIR_PORT || 5886165648Spiso e->mode == REDIR_PROTO) 5887165648Spiso i += sizeof(struct cfg_redir) + e->spool_cnt * 5888165648Spiso sizeof(struct cfg_spool); 5889165648Spiso } 5890165648Spiso } else { 5891165648Spiso for (i = 0; 1; i += LIBALIAS_BUF_SIZE + sizeof(int)) { 5892165648Spiso p = &data[i]; 5893165648Spiso if (p == data + nbytes) 5894165648Spiso break; 5895165648Spiso bcopy(p, &r, sizeof(int)); 5896165648Spiso if (do_rule) { 5897165648Spiso if (!(frule <= r && lrule >= r)) 5898165648Spiso continue; 5899165648Spiso } 5900165648Spiso printf("nat %u: %s\n", r, p+sizeof(int)); 5901165648Spiso } 5902165648Spiso } 5903165648Spiso} 5904165648Spiso 5905130281Sru/* 5906117544Sluigi * Called with the arguments (excluding program name). 5907117544Sluigi * Returns 0 if successful, 1 if empty command, errx() in case of errors. 5908117544Sluigi */ 590998943Sluigistatic int 5910117328Sluigiipfw_main(int oldac, char **oldav) 591198943Sluigi{ 5912117469Sluigi int ch, ac, save_ac; 5913117469Sluigi char **av, **save_av; 5914117469Sluigi int do_acct = 0; /* Show packet/byte count */ 5915117469Sluigi 5916117469Sluigi#define WHITESP " \t\f\v\n\r" 5917117544Sluigi if (oldac == 0) 5918117544Sluigi return 1; 5919117544Sluigi else if (oldac == 1) { 5920117328Sluigi /* 5921117328Sluigi * If we are called with a single string, try to split it into 5922117328Sluigi * arguments for subsequent parsing. 5923117328Sluigi * But first, remove spaces after a ',', by copying the string 5924117328Sluigi * in-place. 5925117328Sluigi */ 5926117469Sluigi char *arg = oldav[0]; /* The string... */ 5927117328Sluigi int l = strlen(arg); 5928117328Sluigi int copy = 0; /* 1 if we need to copy, 0 otherwise */ 5929117328Sluigi int i, j; 5930117469Sluigi for (i = j = 0; i < l; i++) { 5931117469Sluigi if (arg[i] == '#') /* comment marker */ 5932117469Sluigi break; 5933117328Sluigi if (copy) { 5934117328Sluigi arg[j++] = arg[i]; 5935117469Sluigi copy = !index("," WHITESP, arg[i]); 5936117328Sluigi } else { 5937117469Sluigi copy = !index(WHITESP, arg[i]); 5938117328Sluigi if (copy) 5939117328Sluigi arg[j++] = arg[i]; 5940117328Sluigi } 5941117469Sluigi } 5942117328Sluigi if (!copy && j > 0) /* last char was a 'blank', remove it */ 5943117328Sluigi j--; 5944117328Sluigi l = j; /* the new argument length */ 5945117328Sluigi arg[j++] = '\0'; 5946117469Sluigi if (l == 0) /* empty string! */ 5947117544Sluigi return 1; 5948117328Sluigi 5949117328Sluigi /* 5950117328Sluigi * First, count number of arguments. Because of the previous 5951117469Sluigi * processing, this is just the number of blanks plus 1. 5952117328Sluigi */ 5953117469Sluigi for (i = 0, ac = 1; i < l; i++) 5954117469Sluigi if (index(WHITESP, arg[i]) != NULL) 5955117328Sluigi ac++; 5956117328Sluigi 5957117328Sluigi av = calloc(ac, sizeof(char *)); 5958117328Sluigi 5959117328Sluigi /* 5960117328Sluigi * Second, copy arguments from cmd[] to av[]. For each one, 5961117328Sluigi * j is the initial character, i is the one past the end. 5962117328Sluigi */ 5963117469Sluigi for (ac = 0, i = j = 0; i < l; i++) 5964117469Sluigi if (index(WHITESP, arg[i]) != NULL || i == l-1) { 5965117328Sluigi if (i == l-1) 5966117328Sluigi i++; 5967117328Sluigi av[ac] = calloc(i-j+1, 1); 5968117328Sluigi bcopy(arg+j, av[ac], i-j); 5969117328Sluigi ac++; 5970117328Sluigi j = i + 1; 5971117328Sluigi } 5972117328Sluigi } else { 5973117328Sluigi /* 5974117328Sluigi * If an argument ends with ',' join with the next one. 5975117328Sluigi */ 5976117328Sluigi int first, i, l; 5977117328Sluigi 5978117328Sluigi av = calloc(oldac, sizeof(char *)); 5979117328Sluigi for (first = i = ac = 0, l = 0; i < oldac; i++) { 5980117328Sluigi char *arg = oldav[i]; 5981117328Sluigi int k = strlen(arg); 5982117328Sluigi 5983117328Sluigi l += k; 5984117328Sluigi if (arg[k-1] != ',' || i == oldac-1) { 5985117328Sluigi /* Time to copy. */ 5986117328Sluigi av[ac] = calloc(l+1, 1); 5987117328Sluigi for (l=0; first <= i; first++) { 5988117328Sluigi strcat(av[ac]+l, oldav[first]); 5989117328Sluigi l += strlen(oldav[first]); 5990117328Sluigi } 5991117328Sluigi ac++; 5992117328Sluigi l = 0; 5993117328Sluigi first = i+1; 5994117328Sluigi } 5995117328Sluigi } 5996117328Sluigi } 5997117328Sluigi 599898943Sluigi /* Set the force flag for non-interactive processes */ 5999123804Smaxim if (!do_force) 6000123804Smaxim do_force = !isatty(STDIN_FILENO); 600198943Sluigi 6002117469Sluigi /* Save arguments for final freeing of memory. */ 6003117469Sluigi save_ac = ac; 6004117469Sluigi save_av = av; 6005117469Sluigi 6006117469Sluigi optind = optreset = 0; 6007123495Sluigi while ((ch = getopt(ac, av, "abcdefhnNqs:STtv")) != -1) 600898943Sluigi switch (ch) { 600998943Sluigi case 'a': 601098943Sluigi do_acct = 1; 601198943Sluigi break; 6012117328Sluigi 6013123495Sluigi case 'b': 6014123495Sluigi comment_only = 1; 6015123495Sluigi do_compact = 1; 6016123495Sluigi break; 6017123495Sluigi 6018102098Sluigi case 'c': 6019102098Sluigi do_compact = 1; 6020102098Sluigi break; 6021117328Sluigi 602298943Sluigi case 'd': 602398943Sluigi do_dynamic = 1; 602498943Sluigi break; 6025117328Sluigi 602698943Sluigi case 'e': 602798943Sluigi do_expired = 1; 602898943Sluigi break; 6029117328Sluigi 603098943Sluigi case 'f': 603198943Sluigi do_force = 1; 603298943Sluigi break; 6033117328Sluigi 6034117328Sluigi case 'h': /* help */ 6035117544Sluigi free_args(save_ac, save_av); 6036117328Sluigi help(); 6037117328Sluigi break; /* NOTREACHED */ 6038117328Sluigi 6039117328Sluigi case 'n': 6040117328Sluigi test_only = 1; 6041117328Sluigi break; 6042117328Sluigi 604398943Sluigi case 'N': 604498943Sluigi do_resolv = 1; 604598943Sluigi break; 6046117328Sluigi 604798943Sluigi case 'q': 604898943Sluigi do_quiet = 1; 604998943Sluigi break; 6050117328Sluigi 6051117328Sluigi case 's': /* sort */ 6052117328Sluigi do_sort = atoi(optarg); 6053117328Sluigi break; 6054117328Sluigi 6055101628Sluigi case 'S': 6056101628Sluigi show_sets = 1; 6057101628Sluigi break; 6058117328Sluigi 605998943Sluigi case 't': 606098943Sluigi do_time = 1; 606198943Sluigi break; 6062117328Sluigi 6063117472Sluigi case 'T': 6064117472Sluigi do_time = 2; /* numeric timestamp */ 6065117472Sluigi break; 6066117472Sluigi 606798943Sluigi case 'v': /* verbose */ 6068117328Sluigi verbose = 1; 606998943Sluigi break; 6070117328Sluigi 607198943Sluigi default: 6072117544Sluigi free_args(save_ac, save_av); 6073117544Sluigi return 1; 607498943Sluigi } 607598943Sluigi 607698943Sluigi ac -= optind; 607798943Sluigi av += optind; 607898943Sluigi NEED1("bad arguments, for usage summary ``ipfw''"); 607998943Sluigi 608098943Sluigi /* 6081117544Sluigi * An undocumented behaviour of ipfw1 was to allow rule numbers first, 6082117544Sluigi * e.g. "100 add allow ..." instead of "add 100 allow ...". 6083117544Sluigi * In case, swap first and second argument to get the normal form. 6084117544Sluigi */ 6085117544Sluigi if (ac > 1 && isdigit(*av[0])) { 6086117544Sluigi char *p = av[0]; 6087117544Sluigi 6088117544Sluigi av[0] = av[1]; 6089117544Sluigi av[1] = p; 6090117544Sluigi } 6091117544Sluigi 6092117544Sluigi /* 6093165648Spiso * Optional: pipe, queue or nat. 609498943Sluigi */ 6095165648Spiso do_nat = 0; 6096117821Smaxim do_pipe = 0; 6097165648Spiso if (!strncmp(*av, "nat", strlen(*av))) 6098165648Spiso do_nat = 1; 6099165648Spiso else if (!strncmp(*av, "pipe", strlen(*av))) 610098943Sluigi do_pipe = 1; 6101140271Sbrooks else if (_substrcmp(*av, "queue") == 0) 610298943Sluigi do_pipe = 2; 6103165648Spiso if (do_pipe || do_nat) { 610498943Sluigi ac--; 610598943Sluigi av++; 610698943Sluigi } 610798943Sluigi NEED1("missing command"); 610898943Sluigi 610998943Sluigi /* 6110165648Spiso * For pipes, queues and nats we normally say 'nat|pipe NN config' 6111165648Spiso * but the code is easier to parse as 'nat|pipe config NN' 611298943Sluigi * so we swap the two arguments. 611398943Sluigi */ 6114165648Spiso if ((do_pipe || do_nat) && ac > 1 && isdigit(*av[0])) { 611598943Sluigi char *p = av[0]; 6116117544Sluigi 611798943Sluigi av[0] = av[1]; 611898943Sluigi av[1] = p; 611998943Sluigi } 6120117328Sluigi 6121140271Sbrooks if (_substrcmp(*av, "add") == 0) 612298943Sluigi add(ac, av); 6123165648Spiso else if (do_nat && _substrcmp(*av, "show") == 0) 6124165648Spiso show_nat(ac, av); 6125140271Sbrooks else if (do_pipe && _substrcmp(*av, "config") == 0) 612698943Sluigi config_pipe(ac, av); 6127165648Spiso else if (do_nat && _substrcmp(*av, "config") == 0) 6128165648Spiso config_nat(ac, av); 6129140271Sbrooks else if (_substrcmp(*av, "delete") == 0) 613098943Sluigi delete(ac, av); 6131140271Sbrooks else if (_substrcmp(*av, "flush") == 0) 6132117544Sluigi flush(do_force); 6133140271Sbrooks else if (_substrcmp(*av, "zero") == 0) 6134117328Sluigi zero(ac, av, IP_FW_ZERO); 6135140271Sbrooks else if (_substrcmp(*av, "resetlog") == 0) 6136117328Sluigi zero(ac, av, IP_FW_RESETLOG); 6137140271Sbrooks else if (_substrcmp(*av, "print") == 0 || 6138140271Sbrooks _substrcmp(*av, "list") == 0) 6139117469Sluigi list(ac, av, do_acct); 6140140271Sbrooks else if (_substrcmp(*av, "set") == 0) 6141101978Sluigi sets_handler(ac, av); 6142140271Sbrooks else if (_substrcmp(*av, "table") == 0) 6143130281Sru table_handler(ac, av); 6144140271Sbrooks else if (_substrcmp(*av, "enable") == 0) 6145109126Sdillon sysctl_handler(ac, av, 1); 6146140271Sbrooks else if (_substrcmp(*av, "disable") == 0) 6147109126Sdillon sysctl_handler(ac, av, 0); 6148140271Sbrooks else if (_substrcmp(*av, "show") == 0) 6149117469Sluigi list(ac, av, 1 /* show counters */); 6150117469Sluigi else 615198943Sluigi errx(EX_USAGE, "bad command `%s'", *av); 6152117469Sluigi 6153117469Sluigi /* Free memory allocated in the argument parsing. */ 6154117544Sluigi free_args(save_ac, save_av); 615598943Sluigi return 0; 615698943Sluigi} 615798943Sluigi 615898943Sluigi 615998943Sluigistatic void 6160106505Smaximipfw_readfile(int ac, char *av[]) 616198943Sluigi{ 616298943Sluigi#define MAX_ARGS 32 616398943Sluigi char buf[BUFSIZ]; 6164117469Sluigi char *cmd = NULL, *filename = av[ac-1]; 6165117469Sluigi int c, lineno=0; 616698943Sluigi FILE *f = NULL; 616798943Sluigi pid_t preproc = 0; 616898943Sluigi 6169117469Sluigi filename = av[ac-1]; 6170117469Sluigi 6171123804Smaxim while ((c = getopt(ac, av, "cfNnp:qS")) != -1) { 617298943Sluigi switch(c) { 6173117469Sluigi case 'c': 6174117469Sluigi do_compact = 1; 6175117469Sluigi break; 6176117469Sluigi 6177123804Smaxim case 'f': 6178123804Smaxim do_force = 1; 6179123804Smaxim break; 6180123804Smaxim 6181117469Sluigi case 'N': 6182117469Sluigi do_resolv = 1; 6183117469Sluigi break; 6184117469Sluigi 6185117328Sluigi case 'n': 6186117328Sluigi test_only = 1; 6187117328Sluigi break; 6188117328Sluigi 618998943Sluigi case 'p': 619098943Sluigi cmd = optarg; 6191117469Sluigi /* 6192117469Sluigi * Skip previous args and delete last one, so we 6193117469Sluigi * pass all but the last argument to the preprocessor 6194117469Sluigi * via av[optind-1] 6195117469Sluigi */ 6196117469Sluigi av += optind - 1; 6197117469Sluigi ac -= optind - 1; 6198162773Smaxim if (ac < 2) 6199162773Smaxim errx(EX_USAGE, "no filename argument"); 6200117469Sluigi av[ac-1] = NULL; 6201117469Sluigi fprintf(stderr, "command is %s\n", av[0]); 620298943Sluigi break; 620398943Sluigi 620498943Sluigi case 'q': 6205117469Sluigi do_quiet = 1; 620698943Sluigi break; 620798943Sluigi 6208117469Sluigi case 'S': 6209117469Sluigi show_sets = 1; 6210117469Sluigi break; 6211117469Sluigi 621298943Sluigi default: 621398943Sluigi errx(EX_USAGE, "bad arguments, for usage" 621498943Sluigi " summary ``ipfw''"); 621598943Sluigi } 621698943Sluigi 6217117469Sluigi if (cmd != NULL) 6218108231Skbyanc break; 6219108231Skbyanc } 6220108231Skbyanc 6221117469Sluigi if (cmd == NULL && ac != optind + 1) { 6222117469Sluigi fprintf(stderr, "ac %d, optind %d\n", ac, optind); 6223117469Sluigi errx(EX_USAGE, "extraneous filename arguments"); 6224108231Skbyanc } 6225108231Skbyanc 6226117469Sluigi if ((f = fopen(filename, "r")) == NULL) 6227117469Sluigi err(EX_UNAVAILABLE, "fopen: %s", filename); 622898943Sluigi 6229117469Sluigi if (cmd != NULL) { /* pipe through preprocessor */ 623098943Sluigi int pipedes[2]; 623198943Sluigi 623298943Sluigi if (pipe(pipedes) == -1) 623398943Sluigi err(EX_OSERR, "cannot create pipe"); 623498943Sluigi 6235117469Sluigi preproc = fork(); 6236117469Sluigi if (preproc == -1) 623798943Sluigi err(EX_OSERR, "cannot fork"); 623898943Sluigi 6239117577Sluigi if (preproc == 0) { 6240117469Sluigi /* 6241117469Sluigi * Child, will run the preprocessor with the 6242117469Sluigi * file on stdin and the pipe on stdout. 6243117469Sluigi */ 624498943Sluigi if (dup2(fileno(f), 0) == -1 624598943Sluigi || dup2(pipedes[1], 1) == -1) 624698943Sluigi err(EX_OSERR, "dup2()"); 624798943Sluigi fclose(f); 624898943Sluigi close(pipedes[1]); 624998943Sluigi close(pipedes[0]); 6250117469Sluigi execvp(cmd, av); 625198943Sluigi err(EX_OSERR, "execvp(%s) failed", cmd); 6252117469Sluigi } else { /* parent, will reopen f as the pipe */ 625398943Sluigi fclose(f); 625498943Sluigi close(pipedes[1]); 625598943Sluigi if ((f = fdopen(pipedes[0], "r")) == NULL) { 625698943Sluigi int savederrno = errno; 625798943Sluigi 625898943Sluigi (void)kill(preproc, SIGTERM); 625998943Sluigi errno = savederrno; 626098943Sluigi err(EX_OSERR, "fdopen()"); 626198943Sluigi } 626298943Sluigi } 626398943Sluigi } 626498943Sluigi 6265117469Sluigi while (fgets(buf, BUFSIZ, f)) { /* read commands */ 6266117469Sluigi char linename[10]; 6267117469Sluigi char *args[1]; 6268117469Sluigi 626998943Sluigi lineno++; 627098943Sluigi sprintf(linename, "Line %d", lineno); 6271117328Sluigi setprogname(linename); /* XXX */ 6272117469Sluigi args[0] = buf; 6273117469Sluigi ipfw_main(1, args); 627498943Sluigi } 627598943Sluigi fclose(f); 6276117469Sluigi if (cmd != NULL) { 6277117469Sluigi int status; 6278117469Sluigi 627998943Sluigi if (waitpid(preproc, &status, 0) == -1) 628098943Sluigi errx(EX_OSERR, "waitpid()"); 628198943Sluigi if (WIFEXITED(status) && WEXITSTATUS(status) != EX_OK) 628298943Sluigi errx(EX_UNAVAILABLE, 628398943Sluigi "preprocessor exited with status %d", 628498943Sluigi WEXITSTATUS(status)); 628598943Sluigi else if (WIFSIGNALED(status)) 628698943Sluigi errx(EX_UNAVAILABLE, 628798943Sluigi "preprocessor exited with signal %d", 628898943Sluigi WTERMSIG(status)); 628998943Sluigi } 629098943Sluigi} 629198943Sluigi 629298943Sluigiint 629398943Sluigimain(int ac, char *av[]) 629498943Sluigi{ 629598943Sluigi /* 629698943Sluigi * If the last argument is an absolute pathname, interpret it 629798943Sluigi * as a file to be preprocessed. 629898943Sluigi */ 629998943Sluigi 630098943Sluigi if (ac > 1 && av[ac - 1][0] == '/' && access(av[ac - 1], R_OK) == 0) 630198943Sluigi ipfw_readfile(ac, av); 6302117544Sluigi else { 6303117544Sluigi if (ipfw_main(ac-1, av+1)) 6304117544Sluigi show_usage(); 6305117544Sluigi } 630698943Sluigi return EX_OK; 630798943Sluigi} 6308