ipfw2.c revision 136071
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 136071 2004-10-03 00:17:46Z green $ 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> 51136071Sgreen#include <net/pfvar.h> 5298943Sluigi#include <netinet/in.h> 5398943Sluigi#include <netinet/in_systm.h> 5498943Sluigi#include <netinet/ip.h> 5598943Sluigi#include <netinet/ip_icmp.h> 5698943Sluigi#include <netinet/ip_fw.h> 5798943Sluigi#include <netinet/ip_dummynet.h> 5898943Sluigi#include <netinet/tcp.h> 5998943Sluigi#include <arpa/inet.h> 6098943Sluigi 61117328Sluigiint 6298943Sluigi do_resolv, /* Would try to resolve all */ 6398943Sluigi do_time, /* Show time stamps */ 6498943Sluigi do_quiet, /* Be quiet in add and flush */ 6598943Sluigi do_pipe, /* this cmd refers to a pipe */ 6698943Sluigi do_sort, /* field to sort results (0 = no) */ 6798943Sluigi do_dynamic, /* display dynamic rules */ 6898943Sluigi do_expired, /* display expired dynamic rules */ 69102098Sluigi do_compact, /* show rules in compact mode */ 70123804Smaxim do_force, /* do not ask for confirmation */ 71101628Sluigi show_sets, /* display rule sets */ 72117328Sluigi test_only, /* only check syntax */ 73123495Sluigi comment_only, /* only print action and comment */ 7498943Sluigi verbose; 7598943Sluigi 7698943Sluigi#define IP_MASK_ALL 0xffffffff 77130013Scsjp/* 78130013Scsjp * the following macro returns an error message if we run out of 79130013Scsjp * arguments. 80130013Scsjp */ 81130013Scsjp#define NEED1(msg) {if (!ac) errx(EX_USAGE, msg);} 8298943Sluigi 8398943Sluigi/* 84117328Sluigi * _s_x is a structure that stores a string <-> token pairs, used in 85117328Sluigi * various places in the parser. Entries are stored in arrays, 86117328Sluigi * with an entry with s=NULL as terminator. 87117328Sluigi * The search routines are match_token() and match_value(). 88117328Sluigi * Often, an element with x=0 contains an error string. 8998943Sluigi * 9098943Sluigi */ 9198943Sluigistruct _s_x { 92117469Sluigi char const *s; 9398943Sluigi int x; 9498943Sluigi}; 9598943Sluigi 9698943Sluigistatic struct _s_x f_tcpflags[] = { 9798943Sluigi { "syn", TH_SYN }, 9898943Sluigi { "fin", TH_FIN }, 9998943Sluigi { "ack", TH_ACK }, 10098943Sluigi { "psh", TH_PUSH }, 10198943Sluigi { "rst", TH_RST }, 10298943Sluigi { "urg", TH_URG }, 10398943Sluigi { "tcp flag", 0 }, 10498943Sluigi { NULL, 0 } 10598943Sluigi}; 10698943Sluigi 10798943Sluigistatic struct _s_x f_tcpopts[] = { 10898943Sluigi { "mss", IP_FW_TCPOPT_MSS }, 10998943Sluigi { "maxseg", IP_FW_TCPOPT_MSS }, 11098943Sluigi { "window", IP_FW_TCPOPT_WINDOW }, 11198943Sluigi { "sack", IP_FW_TCPOPT_SACK }, 11298943Sluigi { "ts", IP_FW_TCPOPT_TS }, 11398943Sluigi { "timestamp", IP_FW_TCPOPT_TS }, 11498943Sluigi { "cc", IP_FW_TCPOPT_CC }, 11598943Sluigi { "tcp option", 0 }, 11698943Sluigi { NULL, 0 } 11798943Sluigi}; 11898943Sluigi 11998943Sluigi/* 12098943Sluigi * IP options span the range 0 to 255 so we need to remap them 12198943Sluigi * (though in fact only the low 5 bits are significant). 12298943Sluigi */ 12398943Sluigistatic struct _s_x f_ipopts[] = { 12498943Sluigi { "ssrr", IP_FW_IPOPT_SSRR}, 12598943Sluigi { "lsrr", IP_FW_IPOPT_LSRR}, 12698943Sluigi { "rr", IP_FW_IPOPT_RR}, 12798943Sluigi { "ts", IP_FW_IPOPT_TS}, 12898943Sluigi { "ip option", 0 }, 12998943Sluigi { NULL, 0 } 13098943Sluigi}; 13198943Sluigi 13298943Sluigistatic struct _s_x f_iptos[] = { 13398943Sluigi { "lowdelay", IPTOS_LOWDELAY}, 13498943Sluigi { "throughput", IPTOS_THROUGHPUT}, 13598943Sluigi { "reliability", IPTOS_RELIABILITY}, 13698943Sluigi { "mincost", IPTOS_MINCOST}, 13798943Sluigi { "congestion", IPTOS_CE}, 13898943Sluigi { "ecntransport", IPTOS_ECT}, 13998943Sluigi { "ip tos option", 0}, 14098943Sluigi { NULL, 0 } 14198943Sluigi}; 14298943Sluigi 14398943Sluigistatic struct _s_x limit_masks[] = { 14498943Sluigi {"all", DYN_SRC_ADDR|DYN_SRC_PORT|DYN_DST_ADDR|DYN_DST_PORT}, 14598943Sluigi {"src-addr", DYN_SRC_ADDR}, 14698943Sluigi {"src-port", DYN_SRC_PORT}, 14798943Sluigi {"dst-addr", DYN_DST_ADDR}, 14898943Sluigi {"dst-port", DYN_DST_PORT}, 14998943Sluigi {NULL, 0} 15098943Sluigi}; 15198943Sluigi 15298943Sluigi/* 15398943Sluigi * we use IPPROTO_ETHERTYPE as a fake protocol id to call the print routines 15498943Sluigi * This is only used in this code. 15598943Sluigi */ 15698943Sluigi#define IPPROTO_ETHERTYPE 0x1000 15798943Sluigistatic struct _s_x ether_types[] = { 15898943Sluigi /* 15998943Sluigi * Note, we cannot use "-:&/" in the names because they are field 16098943Sluigi * separators in the type specifications. Also, we use s = NULL as 16198943Sluigi * end-delimiter, because a type of 0 can be legal. 16298943Sluigi */ 16398943Sluigi { "ip", 0x0800 }, 16498943Sluigi { "ipv4", 0x0800 }, 16598943Sluigi { "ipv6", 0x86dd }, 16698943Sluigi { "arp", 0x0806 }, 16798943Sluigi { "rarp", 0x8035 }, 16898943Sluigi { "vlan", 0x8100 }, 16998943Sluigi { "loop", 0x9000 }, 17098943Sluigi { "trail", 0x1000 }, 17198943Sluigi { "at", 0x809b }, 17298943Sluigi { "atalk", 0x809b }, 17398943Sluigi { "aarp", 0x80f3 }, 17498943Sluigi { "pppoe_disc", 0x8863 }, 17598943Sluigi { "pppoe_sess", 0x8864 }, 17698943Sluigi { "ipx_8022", 0x00E0 }, 17798943Sluigi { "ipx_8023", 0x0000 }, 17898943Sluigi { "ipx_ii", 0x8137 }, 17998943Sluigi { "ipx_snap", 0x8137 }, 18098943Sluigi { "ipx", 0x8137 }, 18198943Sluigi { "ns", 0x0600 }, 18298943Sluigi { NULL, 0 } 18398943Sluigi}; 18498943Sluigi 18598943Sluigistatic void show_usage(void); 18698943Sluigi 18798943Sluigienum tokens { 18898943Sluigi TOK_NULL=0, 18998943Sluigi 19098943Sluigi TOK_OR, 19198943Sluigi TOK_NOT, 192101641Sluigi TOK_STARTBRACE, 193101641Sluigi TOK_ENDBRACE, 19498943Sluigi 19598943Sluigi TOK_ACCEPT, 19698943Sluigi TOK_COUNT, 19798943Sluigi TOK_PIPE, 19898943Sluigi TOK_QUEUE, 19998943Sluigi TOK_DIVERT, 20098943Sluigi TOK_TEE, 20198943Sluigi TOK_FORWARD, 20298943Sluigi TOK_SKIPTO, 20398943Sluigi TOK_DENY, 20498943Sluigi TOK_REJECT, 20598943Sluigi TOK_RESET, 20698943Sluigi TOK_UNREACH, 20798943Sluigi TOK_CHECKSTATE, 20898943Sluigi 209136071Sgreen TOK_ALTQ, 210136071Sgreen TOK_LOG, 211136071Sgreen 21298943Sluigi TOK_UID, 21398943Sluigi TOK_GID, 214133600Scsjp TOK_JAIL, 21598943Sluigi TOK_IN, 21698943Sluigi TOK_LIMIT, 21798943Sluigi TOK_KEEPSTATE, 21898943Sluigi TOK_LAYER2, 21998943Sluigi TOK_OUT, 22098943Sluigi TOK_XMIT, 22198943Sluigi TOK_RECV, 22298943Sluigi TOK_VIA, 22398943Sluigi TOK_FRAG, 22498943Sluigi TOK_IPOPTS, 22598943Sluigi TOK_IPLEN, 22698943Sluigi TOK_IPID, 22798943Sluigi TOK_IPPRECEDENCE, 22898943Sluigi TOK_IPTOS, 22998943Sluigi TOK_IPTTL, 23098943Sluigi TOK_IPVER, 23198943Sluigi TOK_ESTAB, 23298943Sluigi TOK_SETUP, 23398943Sluigi TOK_TCPFLAGS, 23498943Sluigi TOK_TCPOPTS, 23598943Sluigi TOK_TCPSEQ, 23698943Sluigi TOK_TCPACK, 23798943Sluigi TOK_TCPWIN, 23898943Sluigi TOK_ICMPTYPES, 239102087Sluigi TOK_MAC, 240102087Sluigi TOK_MACTYPE, 241112250Scjc TOK_VERREVPATH, 242128575Sandre TOK_VERSRCREACH, 243133387Sandre TOK_ANTISPOOF, 244117241Sluigi TOK_IPSEC, 245117469Sluigi TOK_COMMENT, 24698943Sluigi 24798943Sluigi TOK_PLR, 248101978Sluigi TOK_NOERROR, 24998943Sluigi TOK_BUCKETS, 25098943Sluigi TOK_DSTIP, 25198943Sluigi TOK_SRCIP, 25298943Sluigi TOK_DSTPORT, 25398943Sluigi TOK_SRCPORT, 25498943Sluigi TOK_ALL, 25598943Sluigi TOK_MASK, 25698943Sluigi TOK_BW, 25798943Sluigi TOK_DELAY, 25898943Sluigi TOK_RED, 25998943Sluigi TOK_GRED, 26098943Sluigi TOK_DROPTAIL, 26198943Sluigi TOK_PROTO, 26298943Sluigi TOK_WEIGHT, 26398943Sluigi}; 26498943Sluigi 26598943Sluigistruct _s_x dummynet_params[] = { 26698943Sluigi { "plr", TOK_PLR }, 267101978Sluigi { "noerror", TOK_NOERROR }, 26898943Sluigi { "buckets", TOK_BUCKETS }, 26998943Sluigi { "dst-ip", TOK_DSTIP }, 27098943Sluigi { "src-ip", TOK_SRCIP }, 27198943Sluigi { "dst-port", TOK_DSTPORT }, 27298943Sluigi { "src-port", TOK_SRCPORT }, 27398943Sluigi { "proto", TOK_PROTO }, 27498943Sluigi { "weight", TOK_WEIGHT }, 27598943Sluigi { "all", TOK_ALL }, 27698943Sluigi { "mask", TOK_MASK }, 27798943Sluigi { "droptail", TOK_DROPTAIL }, 27898943Sluigi { "red", TOK_RED }, 27998943Sluigi { "gred", TOK_GRED }, 28098943Sluigi { "bw", TOK_BW }, 28198943Sluigi { "bandwidth", TOK_BW }, 28298943Sluigi { "delay", TOK_DELAY }, 28399475Sluigi { "pipe", TOK_PIPE }, 28498943Sluigi { "queue", TOK_QUEUE }, 28598943Sluigi { "dummynet-params", TOK_NULL }, 286117328Sluigi { NULL, 0 } /* terminator */ 28798943Sluigi}; 28898943Sluigi 28998943Sluigistruct _s_x rule_actions[] = { 29098943Sluigi { "accept", TOK_ACCEPT }, 29198943Sluigi { "pass", TOK_ACCEPT }, 29298943Sluigi { "allow", TOK_ACCEPT }, 29398943Sluigi { "permit", TOK_ACCEPT }, 29498943Sluigi { "count", TOK_COUNT }, 29598943Sluigi { "pipe", TOK_PIPE }, 29698943Sluigi { "queue", TOK_QUEUE }, 29798943Sluigi { "divert", TOK_DIVERT }, 29898943Sluigi { "tee", TOK_TEE }, 29998943Sluigi { "fwd", TOK_FORWARD }, 30098943Sluigi { "forward", TOK_FORWARD }, 30198943Sluigi { "skipto", TOK_SKIPTO }, 30298943Sluigi { "deny", TOK_DENY }, 30398943Sluigi { "drop", TOK_DENY }, 30498943Sluigi { "reject", TOK_REJECT }, 30598943Sluigi { "reset", TOK_RESET }, 30699475Sluigi { "unreach", TOK_UNREACH }, 30798943Sluigi { "check-state", TOK_CHECKSTATE }, 308117469Sluigi { "//", TOK_COMMENT }, 309117328Sluigi { NULL, 0 } /* terminator */ 31098943Sluigi}; 31198943Sluigi 312136071Sgreenstruct _s_x rule_action_params[] = { 313136071Sgreen { "altq", TOK_ALTQ }, 314136071Sgreen { "log", TOK_LOG }, 315136071Sgreen { NULL, 0 } /* terminator */ 316136071Sgreen}; 317136071Sgreen 31898943Sluigistruct _s_x rule_options[] = { 31998943Sluigi { "uid", TOK_UID }, 32098943Sluigi { "gid", TOK_GID }, 321133600Scsjp { "jail", TOK_JAIL }, 32298943Sluigi { "in", TOK_IN }, 32398943Sluigi { "limit", TOK_LIMIT }, 32498943Sluigi { "keep-state", TOK_KEEPSTATE }, 32598943Sluigi { "bridged", TOK_LAYER2 }, 32698943Sluigi { "layer2", TOK_LAYER2 }, 32798943Sluigi { "out", TOK_OUT }, 32898943Sluigi { "xmit", TOK_XMIT }, 32998943Sluigi { "recv", TOK_RECV }, 33098943Sluigi { "via", TOK_VIA }, 33198943Sluigi { "fragment", TOK_FRAG }, 33298943Sluigi { "frag", TOK_FRAG }, 33398943Sluigi { "ipoptions", TOK_IPOPTS }, 33498943Sluigi { "ipopts", TOK_IPOPTS }, 33598943Sluigi { "iplen", TOK_IPLEN }, 33698943Sluigi { "ipid", TOK_IPID }, 33798943Sluigi { "ipprecedence", TOK_IPPRECEDENCE }, 33898943Sluigi { "iptos", TOK_IPTOS }, 33998943Sluigi { "ipttl", TOK_IPTTL }, 34098943Sluigi { "ipversion", TOK_IPVER }, 34198943Sluigi { "ipver", TOK_IPVER }, 34298943Sluigi { "estab", TOK_ESTAB }, 34398943Sluigi { "established", TOK_ESTAB }, 34498943Sluigi { "setup", TOK_SETUP }, 34598943Sluigi { "tcpflags", TOK_TCPFLAGS }, 34698943Sluigi { "tcpflgs", TOK_TCPFLAGS }, 34798943Sluigi { "tcpoptions", TOK_TCPOPTS }, 34898943Sluigi { "tcpopts", TOK_TCPOPTS }, 34998943Sluigi { "tcpseq", TOK_TCPSEQ }, 35098943Sluigi { "tcpack", TOK_TCPACK }, 35198943Sluigi { "tcpwin", TOK_TCPWIN }, 35299909Sluigi { "icmptype", TOK_ICMPTYPES }, 35398943Sluigi { "icmptypes", TOK_ICMPTYPES }, 354102087Sluigi { "dst-ip", TOK_DSTIP }, 355102087Sluigi { "src-ip", TOK_SRCIP }, 356102087Sluigi { "dst-port", TOK_DSTPORT }, 357102087Sluigi { "src-port", TOK_SRCPORT }, 358102087Sluigi { "proto", TOK_PROTO }, 359102087Sluigi { "MAC", TOK_MAC }, 360102087Sluigi { "mac", TOK_MAC }, 361102087Sluigi { "mac-type", TOK_MACTYPE }, 362112250Scjc { "verrevpath", TOK_VERREVPATH }, 363128575Sandre { "versrcreach", TOK_VERSRCREACH }, 364133387Sandre { "antispoof", TOK_ANTISPOOF }, 365117241Sluigi { "ipsec", TOK_IPSEC }, 366117469Sluigi { "//", TOK_COMMENT }, 36798943Sluigi 36898943Sluigi { "not", TOK_NOT }, /* pseudo option */ 36998943Sluigi { "!", /* escape ? */ TOK_NOT }, /* pseudo option */ 37098943Sluigi { "or", TOK_OR }, /* pseudo option */ 37198943Sluigi { "|", /* escape */ TOK_OR }, /* pseudo option */ 372101641Sluigi { "{", TOK_STARTBRACE }, /* pseudo option */ 373101641Sluigi { "(", TOK_STARTBRACE }, /* pseudo option */ 374101641Sluigi { "}", TOK_ENDBRACE }, /* pseudo option */ 375101641Sluigi { ")", TOK_ENDBRACE }, /* pseudo option */ 376117328Sluigi { NULL, 0 } /* terminator */ 37798943Sluigi}; 37898943Sluigi 379117328Sluigistatic __inline uint64_t 380117328Sluigialign_uint64(uint64_t *pll) { 381117328Sluigi uint64_t ret; 382115793Sticso 383115793Sticso bcopy (pll, &ret, sizeof(ret)); 384115793Sticso return ret; 385129389Sstefanf} 386115793Sticso 387117328Sluigi/* 388117328Sluigi * conditionally runs the command. 389117328Sluigi */ 390117469Sluigistatic int 391119740Stmmdo_cmd(int optname, void *optval, uintptr_t optlen) 392117328Sluigi{ 393117328Sluigi static int s = -1; /* the socket */ 394117328Sluigi int i; 395117577Sluigi 396117328Sluigi if (test_only) 397117328Sluigi return 0; 398117328Sluigi 399117328Sluigi if (s == -1) 400117328Sluigi s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); 401117328Sluigi if (s < 0) 402117328Sluigi err(EX_UNAVAILABLE, "socket"); 403117328Sluigi 404117328Sluigi if (optname == IP_FW_GET || optname == IP_DUMMYNET_GET || 405130281Sru optname == IP_FW_ADD || optname == IP_FW_TABLE_LIST || 406130281Sru optname == IP_FW_TABLE_GETSIZE) 407117328Sluigi i = getsockopt(s, IPPROTO_IP, optname, optval, 408117328Sluigi (socklen_t *)optlen); 409117328Sluigi else 410117328Sluigi i = setsockopt(s, IPPROTO_IP, optname, optval, optlen); 411117328Sluigi return i; 412117328Sluigi} 413117328Sluigi 41498943Sluigi/** 41598943Sluigi * match_token takes a table and a string, returns the value associated 416117328Sluigi * with the string (-1 in case of failure). 41798943Sluigi */ 41898943Sluigistatic int 41998943Sluigimatch_token(struct _s_x *table, char *string) 42098943Sluigi{ 42198943Sluigi struct _s_x *pt; 422117469Sluigi uint i = strlen(string); 42398943Sluigi 42498943Sluigi for (pt = table ; i && pt->s != NULL ; pt++) 42598943Sluigi if (strlen(pt->s) == i && !bcmp(string, pt->s, i)) 42698943Sluigi return pt->x; 42798943Sluigi return -1; 428129389Sstefanf} 42998943Sluigi 430117328Sluigi/** 431117328Sluigi * match_value takes a table and a value, returns the string associated 432117328Sluigi * with the value (NULL in case of failure). 433117328Sluigi */ 434117469Sluigistatic char const * 435117469Sluigimatch_value(struct _s_x *p, int value) 43698943Sluigi{ 43798943Sluigi for (; p->s != NULL; p++) 43898943Sluigi if (p->x == value) 43998943Sluigi return p->s; 44098943Sluigi return NULL; 44198943Sluigi} 44298943Sluigi 44398943Sluigi/* 44498943Sluigi * prints one port, symbolic or numeric 44598943Sluigi */ 44698943Sluigistatic void 447117328Sluigiprint_port(int proto, uint16_t port) 44898943Sluigi{ 44998943Sluigi 45098943Sluigi if (proto == IPPROTO_ETHERTYPE) { 451117469Sluigi char const *s; 45298943Sluigi 45398943Sluigi if (do_resolv && (s = match_value(ether_types, port)) ) 45498943Sluigi printf("%s", s); 45598943Sluigi else 45698943Sluigi printf("0x%04x", port); 45798943Sluigi } else { 45898943Sluigi struct servent *se = NULL; 45998943Sluigi if (do_resolv) { 46098943Sluigi struct protoent *pe = getprotobynumber(proto); 46198943Sluigi 46298943Sluigi se = getservbyport(htons(port), pe ? pe->p_name : NULL); 46398943Sluigi } 46498943Sluigi if (se) 46598943Sluigi printf("%s", se->s_name); 46698943Sluigi else 46798943Sluigi printf("%d", port); 46898943Sluigi } 46998943Sluigi} 47098943Sluigi 471117328Sluigistruct _s_x _port_name[] = { 472117328Sluigi {"dst-port", O_IP_DSTPORT}, 473117328Sluigi {"src-port", O_IP_SRCPORT}, 474117328Sluigi {"ipid", O_IPID}, 475117328Sluigi {"iplen", O_IPLEN}, 476117328Sluigi {"ipttl", O_IPTTL}, 477117328Sluigi {"mac-type", O_MAC_TYPE}, 478117328Sluigi {NULL, 0} 479117328Sluigi}; 480117328Sluigi 48198943Sluigi/* 482117328Sluigi * Print the values in a list 16-bit items of the types above. 48398943Sluigi * XXX todo: add support for mask. 48498943Sluigi */ 48598943Sluigistatic void 486102087Sluigiprint_newports(ipfw_insn_u16 *cmd, int proto, int opcode) 48798943Sluigi{ 488117328Sluigi uint16_t *p = cmd->ports; 48998943Sluigi int i; 490117469Sluigi char const *sep; 49198943Sluigi 49298943Sluigi if (cmd->o.len & F_NOT) 49398943Sluigi printf(" not"); 494116690Sluigi if (opcode != 0) { 495117328Sluigi sep = match_value(_port_name, opcode); 496117328Sluigi if (sep == NULL) 497116690Sluigi sep = "???"; 498116690Sluigi printf (" %s", sep); 499116690Sluigi } 500116690Sluigi sep = " "; 50198943Sluigi for (i = F_LEN((ipfw_insn *)cmd) - 1; i > 0; i--, p += 2) { 50298943Sluigi printf(sep); 50398943Sluigi print_port(proto, p[0]); 50498943Sluigi if (p[0] != p[1]) { 50598943Sluigi printf("-"); 50698943Sluigi print_port(proto, p[1]); 50798943Sluigi } 50898943Sluigi sep = ","; 50998943Sluigi } 51098943Sluigi} 51198943Sluigi 51298943Sluigi/* 51398943Sluigi * Like strtol, but also translates service names into port numbers 51498943Sluigi * for some protocols. 51598943Sluigi * In particular: 51698943Sluigi * proto == -1 disables the protocol check; 51798943Sluigi * proto == IPPROTO_ETHERTYPE looks up an internal table 51898943Sluigi * proto == <some value in /etc/protocols> matches the values there. 519101628Sluigi * Returns *end == s in case the parameter is not found. 52098943Sluigi */ 52198943Sluigistatic int 52298943Sluigistrtoport(char *s, char **end, int base, int proto) 52398943Sluigi{ 524101628Sluigi char *p, *buf; 525101628Sluigi char *s1; 52698943Sluigi int i; 52798943Sluigi 528101628Sluigi *end = s; /* default - not found */ 529117577Sluigi if (*s == '\0') 530101628Sluigi return 0; /* not found */ 531106505Smaxim 53298943Sluigi if (isdigit(*s)) 53398943Sluigi return strtol(s, end, base); 53498943Sluigi 53598943Sluigi /* 536101628Sluigi * find separator. '\\' escapes the next char. 53798943Sluigi */ 538101628Sluigi for (s1 = s; *s1 && (isalnum(*s1) || *s1 == '\\') ; s1++) 539101628Sluigi if (*s1 == '\\' && s1[1] != '\0') 540101628Sluigi s1++; 54198943Sluigi 542101628Sluigi buf = malloc(s1 - s + 1); 543101628Sluigi if (buf == NULL) 544101628Sluigi return 0; 545101628Sluigi 546101628Sluigi /* 547101628Sluigi * copy into a buffer skipping backslashes 548101628Sluigi */ 549101628Sluigi for (p = s, i = 0; p != s1 ; p++) 550117577Sluigi if (*p != '\\') 551101628Sluigi buf[i++] = *p; 552101628Sluigi buf[i++] = '\0'; 553101628Sluigi 55498943Sluigi if (proto == IPPROTO_ETHERTYPE) { 555101628Sluigi i = match_token(ether_types, buf); 556101628Sluigi free(buf); 557101628Sluigi if (i != -1) { /* found */ 55898943Sluigi *end = s1; 55998943Sluigi return i; 56098943Sluigi } 56198943Sluigi } else { 56298943Sluigi struct protoent *pe = NULL; 56398943Sluigi struct servent *se; 56498943Sluigi 56598943Sluigi if (proto != 0) 56698943Sluigi pe = getprotobynumber(proto); 56798943Sluigi setservent(1); 568101628Sluigi se = getservbyname(buf, pe ? pe->p_name : NULL); 569101628Sluigi free(buf); 57098943Sluigi if (se != NULL) { 57198943Sluigi *end = s1; 57298943Sluigi return ntohs(se->s_port); 57398943Sluigi } 57498943Sluigi } 575101628Sluigi return 0; /* not found */ 57698943Sluigi} 57798943Sluigi 57898943Sluigi/* 579136071Sgreen * Map between current altq queue id numbers and names. 580136071Sgreen */ 581136071Sgreenstatic int altq_fetched = 0; 582136071Sgreenstatic TAILQ_HEAD(, pf_altq) altq_entries = 583136071Sgreen TAILQ_HEAD_INITIALIZER(altq_entries); 584136071Sgreen 585136071Sgreenstatic void 586136071Sgreenaltq_set_enabled(int enabled) 587136071Sgreen{ 588136071Sgreen int pffd; 589136071Sgreen 590136071Sgreen pffd = open("/dev/pf", O_RDWR); 591136071Sgreen if (pffd == -1) 592136071Sgreen err(EX_UNAVAILABLE, 593136071Sgreen "altq support opening pf(4) control device"); 594136071Sgreen if (enabled) { 595136071Sgreen if (ioctl(pffd, DIOCSTARTALTQ) != 0 && errno != EEXIST) 596136071Sgreen err(EX_UNAVAILABLE, "enabling altq"); 597136071Sgreen } else { 598136071Sgreen if (ioctl(pffd, DIOCSTOPALTQ) != 0 && errno != ENOENT) 599136071Sgreen err(EX_UNAVAILABLE, "disabling altq"); 600136071Sgreen } 601136071Sgreen close(pffd); 602136071Sgreen} 603136071Sgreen 604136071Sgreenstatic void 605136071Sgreenaltq_fetch() 606136071Sgreen{ 607136071Sgreen struct pfioc_altq pfioc; 608136071Sgreen struct pf_altq *altq; 609136071Sgreen int pffd, mnr; 610136071Sgreen 611136071Sgreen if (altq_fetched) 612136071Sgreen return; 613136071Sgreen altq_fetched = 1; 614136071Sgreen pffd = open("/dev/pf", O_RDONLY); 615136071Sgreen if (pffd == -1) { 616136071Sgreen warn("altq support opening pf(4) control device"); 617136071Sgreen return; 618136071Sgreen } 619136071Sgreen bzero(&pfioc, sizeof(pfioc)); 620136071Sgreen if (ioctl(pffd, DIOCGETALTQS, &pfioc) != 0) { 621136071Sgreen warn("altq support getting queue list"); 622136071Sgreen close(pffd); 623136071Sgreen return; 624136071Sgreen } 625136071Sgreen mnr = pfioc.nr; 626136071Sgreen for (pfioc.nr = 0; pfioc.nr < mnr; pfioc.nr++) { 627136071Sgreen if (ioctl(pffd, DIOCGETALTQ, &pfioc) != 0) { 628136071Sgreen if (errno == EBUSY) 629136071Sgreen break; 630136071Sgreen warn("altq support getting queue list"); 631136071Sgreen close(pffd); 632136071Sgreen return; 633136071Sgreen } 634136071Sgreen if (pfioc.altq.qid == 0) 635136071Sgreen continue; 636136071Sgreen altq = malloc(sizeof(*altq)); 637136071Sgreen if (altq == NULL) 638136071Sgreen err(EX_OSERR, "malloc"); 639136071Sgreen *altq = pfioc.altq; 640136071Sgreen TAILQ_INSERT_TAIL(&altq_entries, altq, entries); 641136071Sgreen } 642136071Sgreen close(pffd); 643136071Sgreen} 644136071Sgreen 645136071Sgreenstatic u_int32_t 646136071Sgreenaltq_name_to_qid(const char *name) 647136071Sgreen{ 648136071Sgreen struct pf_altq *altq; 649136071Sgreen 650136071Sgreen altq_fetch(); 651136071Sgreen TAILQ_FOREACH(altq, &altq_entries, entries) 652136071Sgreen if (strcmp(name, altq->qname) == 0) 653136071Sgreen break; 654136071Sgreen if (altq == NULL) 655136071Sgreen errx(EX_DATAERR, "altq has no queue named `%s'", name); 656136071Sgreen return altq->qid; 657136071Sgreen} 658136071Sgreen 659136071Sgreenstatic const char * 660136071Sgreenaltq_qid_to_name(u_int32_t qid) 661136071Sgreen{ 662136071Sgreen struct pf_altq *altq; 663136071Sgreen 664136071Sgreen altq_fetch(); 665136071Sgreen TAILQ_FOREACH(altq, &altq_entries, entries) 666136071Sgreen if (qid == altq->qid) 667136071Sgreen break; 668136071Sgreen if (altq == NULL) 669136071Sgreen return NULL; 670136071Sgreen return altq->qname; 671136071Sgreen} 672136071Sgreen 673136071Sgreenstatic void 674136071Sgreenfill_altq_qid(u_int32_t *qid, const char *av) 675136071Sgreen{ 676136071Sgreen *qid = altq_name_to_qid(av); 677136071Sgreen} 678136071Sgreen 679136071Sgreen/* 680117328Sluigi * Fill the body of the command with the list of port ranges. 68198943Sluigi */ 68298943Sluigistatic int 68398943Sluigifill_newports(ipfw_insn_u16 *cmd, char *av, int proto) 68498943Sluigi{ 685117328Sluigi uint16_t a, b, *p = cmd->ports; 68698943Sluigi int i = 0; 687102087Sluigi char *s = av; 68898943Sluigi 689102087Sluigi while (*s) { 69098943Sluigi a = strtoport(av, &s, 0, proto); 69198943Sluigi if (s == av) /* no parameter */ 69298943Sluigi break; 69398943Sluigi if (*s == '-') { /* a range */ 69498943Sluigi av = s+1; 69598943Sluigi b = strtoport(av, &s, 0, proto); 69698943Sluigi if (s == av) /* no parameter */ 69798943Sluigi break; 69898943Sluigi p[0] = a; 69998943Sluigi p[1] = b; 700117328Sluigi } else if (*s == ',' || *s == '\0' ) 70198943Sluigi p[0] = p[1] = a; 702117328Sluigi else /* invalid separator */ 703101978Sluigi errx(EX_DATAERR, "invalid separator <%c> in <%s>\n", 704101978Sluigi *s, av); 705102087Sluigi i++; 706102087Sluigi p += 2; 70798943Sluigi av = s+1; 70898943Sluigi } 70998943Sluigi if (i > 0) { 71098943Sluigi if (i+1 > F_LEN_MASK) 711102087Sluigi errx(EX_DATAERR, "too many ports/ranges\n"); 71298943Sluigi cmd->o.len |= i+1; /* leave F_NOT and F_OR untouched */ 71398943Sluigi } 71498943Sluigi return i; 71598943Sluigi} 71698943Sluigi 71798943Sluigistatic struct _s_x icmpcodes[] = { 71898943Sluigi { "net", ICMP_UNREACH_NET }, 71998943Sluigi { "host", ICMP_UNREACH_HOST }, 72098943Sluigi { "protocol", ICMP_UNREACH_PROTOCOL }, 72198943Sluigi { "port", ICMP_UNREACH_PORT }, 72298943Sluigi { "needfrag", ICMP_UNREACH_NEEDFRAG }, 72398943Sluigi { "srcfail", ICMP_UNREACH_SRCFAIL }, 72498943Sluigi { "net-unknown", ICMP_UNREACH_NET_UNKNOWN }, 72598943Sluigi { "host-unknown", ICMP_UNREACH_HOST_UNKNOWN }, 72698943Sluigi { "isolated", ICMP_UNREACH_ISOLATED }, 72798943Sluigi { "net-prohib", ICMP_UNREACH_NET_PROHIB }, 72898943Sluigi { "host-prohib", ICMP_UNREACH_HOST_PROHIB }, 72998943Sluigi { "tosnet", ICMP_UNREACH_TOSNET }, 73098943Sluigi { "toshost", ICMP_UNREACH_TOSHOST }, 73198943Sluigi { "filter-prohib", ICMP_UNREACH_FILTER_PROHIB }, 73298943Sluigi { "host-precedence", ICMP_UNREACH_HOST_PRECEDENCE }, 73398943Sluigi { "precedence-cutoff", ICMP_UNREACH_PRECEDENCE_CUTOFF }, 73498943Sluigi { NULL, 0 } 73598943Sluigi}; 73698943Sluigi 73798943Sluigistatic void 73898943Sluigifill_reject_code(u_short *codep, char *str) 73998943Sluigi{ 74098943Sluigi int val; 74198943Sluigi char *s; 74298943Sluigi 74398943Sluigi val = strtoul(str, &s, 0); 74498943Sluigi if (s == str || *s != '\0' || val >= 0x100) 74598943Sluigi val = match_token(icmpcodes, str); 746102087Sluigi if (val < 0) 74798943Sluigi errx(EX_DATAERR, "unknown ICMP unreachable code ``%s''", str); 74898943Sluigi *codep = val; 74998943Sluigi return; 75098943Sluigi} 75198943Sluigi 75298943Sluigistatic void 753117328Sluigiprint_reject_code(uint16_t code) 75498943Sluigi{ 755117469Sluigi char const *s = match_value(icmpcodes, code); 75698943Sluigi 75798943Sluigi if (s != NULL) 75899475Sluigi printf("unreach %s", s); 75998943Sluigi else 76099475Sluigi printf("unreach %u", code); 76198943Sluigi} 76298943Sluigi 76398943Sluigi/* 76498943Sluigi * Returns the number of bits set (from left) in a contiguous bitmask, 76598943Sluigi * or -1 if the mask is not contiguous. 76698943Sluigi * XXX this needs a proper fix. 76798943Sluigi * This effectively works on masks in big-endian (network) format. 76898943Sluigi * when compiled on little endian architectures. 76998943Sluigi * 77098943Sluigi * First bit is bit 7 of the first byte -- note, for MAC addresses, 77198943Sluigi * the first bit on the wire is bit 0 of the first byte. 77298943Sluigi * len is the max length in bits. 77398943Sluigi */ 77498943Sluigistatic int 775117577Sluigicontigmask(uint8_t *p, int len) 77698943Sluigi{ 77798943Sluigi int i, n; 778117577Sluigi 77998943Sluigi for (i=0; i<len ; i++) 78098943Sluigi if ( (p[i/8] & (1 << (7 - (i%8)))) == 0) /* first bit unset */ 78198943Sluigi break; 78298943Sluigi for (n=i+1; n < len; n++) 78398943Sluigi if ( (p[n/8] & (1 << (7 - (n%8)))) != 0) 78498943Sluigi return -1; /* mask not contiguous */ 78598943Sluigi return i; 78698943Sluigi} 78798943Sluigi 78898943Sluigi/* 78998943Sluigi * print flags set/clear in the two bitmasks passed as parameters. 79098943Sluigi * There is a specialized check for f_tcpflags. 79198943Sluigi */ 79298943Sluigistatic void 793117469Sluigiprint_flags(char const *name, ipfw_insn *cmd, struct _s_x *list) 79498943Sluigi{ 795117469Sluigi char const *comma = ""; 79698943Sluigi int i; 797117577Sluigi uint8_t set = cmd->arg1 & 0xff; 798117577Sluigi uint8_t clear = (cmd->arg1 >> 8) & 0xff; 79998943Sluigi 80098943Sluigi if (list == f_tcpflags && set == TH_SYN && clear == TH_ACK) { 80198943Sluigi printf(" setup"); 80298943Sluigi return; 80398943Sluigi } 80498943Sluigi 80598943Sluigi printf(" %s ", name); 80698943Sluigi for (i=0; list[i].x != 0; i++) { 80798943Sluigi if (set & list[i].x) { 80898943Sluigi set &= ~list[i].x; 80998943Sluigi printf("%s%s", comma, list[i].s); 81098943Sluigi comma = ","; 81198943Sluigi } 81298943Sluigi if (clear & list[i].x) { 81398943Sluigi clear &= ~list[i].x; 81498943Sluigi printf("%s!%s", comma, list[i].s); 81598943Sluigi comma = ","; 81698943Sluigi } 81798943Sluigi } 81898943Sluigi} 81998943Sluigi 82098943Sluigi/* 82198943Sluigi * Print the ip address contained in a command. 82298943Sluigi */ 82398943Sluigistatic void 824117469Sluigiprint_ip(ipfw_insn_ip *cmd, char const *s) 82598943Sluigi{ 82698943Sluigi struct hostent *he = NULL; 827117328Sluigi int len = F_LEN((ipfw_insn *)cmd); 828117328Sluigi uint32_t *a = ((ipfw_insn_u32 *)cmd)->d; 82998943Sluigi 830102087Sluigi printf("%s%s ", cmd->o.len & F_NOT ? " not": "", s); 83198943Sluigi 83298943Sluigi if (cmd->o.opcode == O_IP_SRC_ME || cmd->o.opcode == O_IP_DST_ME) { 83398943Sluigi printf("me"); 83498943Sluigi return; 83598943Sluigi } 836130281Sru if (cmd->o.opcode == O_IP_SRC_LOOKUP || 837130281Sru cmd->o.opcode == O_IP_DST_LOOKUP) { 838130281Sru printf("table(%u", ((ipfw_insn *)cmd)->arg1); 839130281Sru if (len == F_INSN_SIZE(ipfw_insn_u32)) 840130281Sru printf(",%u", *a); 841130281Sru printf(")"); 842130281Sru return; 843130281Sru } 84498943Sluigi if (cmd->o.opcode == O_IP_SRC_SET || cmd->o.opcode == O_IP_DST_SET) { 845117328Sluigi uint32_t x, *map = (uint32_t *)&(cmd->mask); 846116716Sluigi int i, j; 84798943Sluigi char comma = '{'; 84898943Sluigi 84998943Sluigi x = cmd->o.arg1 - 1; 85098943Sluigi x = htonl( ~x ); 85198943Sluigi cmd->addr.s_addr = htonl(cmd->addr.s_addr); 85298943Sluigi printf("%s/%d", inet_ntoa(cmd->addr), 853117577Sluigi contigmask((uint8_t *)&x, 32)); 85498943Sluigi x = cmd->addr.s_addr = htonl(cmd->addr.s_addr); 85598943Sluigi x &= 0xff; /* base */ 856116716Sluigi /* 857116716Sluigi * Print bits and ranges. 858116716Sluigi * Locate first bit set (i), then locate first bit unset (j). 859116716Sluigi * If we have 3+ consecutive bits set, then print them as a 860116716Sluigi * range, otherwise only print the initial bit and rescan. 861116716Sluigi */ 86298943Sluigi for (i=0; i < cmd->o.arg1; i++) 863117328Sluigi if (map[i/32] & (1<<(i & 31))) { 864116716Sluigi for (j=i+1; j < cmd->o.arg1; j++) 865117328Sluigi if (!(map[ j/32] & (1<<(j & 31)))) 866116716Sluigi break; 86798943Sluigi printf("%c%d", comma, i+x); 868116716Sluigi if (j>i+2) { /* range has at least 3 elements */ 869116716Sluigi printf("-%d", j-1+x); 870116716Sluigi i = j-1; 871116716Sluigi } 87298943Sluigi comma = ','; 87398943Sluigi } 87498943Sluigi printf("}"); 87598943Sluigi return; 87698943Sluigi } 877117328Sluigi /* 878117328Sluigi * len == 2 indicates a single IP, whereas lists of 1 or more 879117328Sluigi * addr/mask pairs have len = (2n+1). We convert len to n so we 880117328Sluigi * use that to count the number of entries. 881117328Sluigi */ 882117328Sluigi for (len = len / 2; len > 0; len--, a += 2) { 883117328Sluigi int mb = /* mask length */ 884117328Sluigi (cmd->o.opcode == O_IP_SRC || cmd->o.opcode == O_IP_DST) ? 885117577Sluigi 32 : contigmask((uint8_t *)&(a[1]), 32); 88698943Sluigi if (mb == 32 && do_resolv) 887117328Sluigi he = gethostbyaddr((char *)&(a[0]), sizeof(u_long), AF_INET); 88898943Sluigi if (he != NULL) /* resolved to name */ 88998943Sluigi printf("%s", he->h_name); 89098943Sluigi else if (mb == 0) /* any */ 89198943Sluigi printf("any"); 89298943Sluigi else { /* numeric IP followed by some kind of mask */ 893117328Sluigi printf("%s", inet_ntoa( *((struct in_addr *)&a[0]) ) ); 89498943Sluigi if (mb < 0) 895117328Sluigi printf(":%s", inet_ntoa( *((struct in_addr *)&a[1]) ) ); 89698943Sluigi else if (mb < 32) 89798943Sluigi printf("/%d", mb); 89898943Sluigi } 899117328Sluigi if (len > 1) 900117328Sluigi printf(","); 901117328Sluigi } 90298943Sluigi} 90398943Sluigi 90498943Sluigi/* 90598943Sluigi * prints a MAC address/mask pair 90698943Sluigi */ 90798943Sluigistatic void 908117577Sluigiprint_mac(uint8_t *addr, uint8_t *mask) 90998943Sluigi{ 91098943Sluigi int l = contigmask(mask, 48); 91198943Sluigi 91298943Sluigi if (l == 0) 91398943Sluigi printf(" any"); 91498943Sluigi else { 91598943Sluigi printf(" %02x:%02x:%02x:%02x:%02x:%02x", 91698943Sluigi addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 91798943Sluigi if (l == -1) 91898943Sluigi printf("&%02x:%02x:%02x:%02x:%02x:%02x", 91998943Sluigi mask[0], mask[1], mask[2], 92098943Sluigi mask[3], mask[4], mask[5]); 92198943Sluigi else if (l < 48) 92298943Sluigi printf("/%d", l); 92398943Sluigi } 92498943Sluigi} 92598943Sluigi 92699475Sluigistatic void 92799475Sluigifill_icmptypes(ipfw_insn_u32 *cmd, char *av) 92899475Sluigi{ 929117328Sluigi uint8_t type; 93098943Sluigi 93199475Sluigi cmd->d[0] = 0; 93299475Sluigi while (*av) { 93399475Sluigi if (*av == ',') 93499475Sluigi av++; 93599475Sluigi 93699475Sluigi type = strtoul(av, &av, 0); 93799475Sluigi 93899475Sluigi if (*av != ',' && *av != '\0') 93999475Sluigi errx(EX_DATAERR, "invalid ICMP type"); 94099475Sluigi 94199475Sluigi if (type > 31) 94299475Sluigi errx(EX_DATAERR, "ICMP type out of range"); 94399475Sluigi 94499475Sluigi cmd->d[0] |= 1 << type; 94599475Sluigi } 94699475Sluigi cmd->o.opcode = O_ICMPTYPE; 94799475Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 94899475Sluigi} 94999475Sluigi 95099475Sluigistatic void 95199475Sluigiprint_icmptypes(ipfw_insn_u32 *cmd) 95299475Sluigi{ 95399475Sluigi int i; 95499475Sluigi char sep= ' '; 95599475Sluigi 95699475Sluigi printf(" icmptypes"); 95799475Sluigi for (i = 0; i < 32; i++) { 95899475Sluigi if ( (cmd->d[0] & (1 << (i))) == 0) 95999475Sluigi continue; 96099475Sluigi printf("%c%d", sep, i); 96199475Sluigi sep = ','; 96299475Sluigi } 96399475Sluigi} 96499475Sluigi 96598943Sluigi/* 96698943Sluigi * show_ipfw() prints the body of an ipfw rule. 96798943Sluigi * Because the standard rule has at least proto src_ip dst_ip, we use 96898943Sluigi * a helper function to produce these entries if not provided explicitly. 969102087Sluigi * The first argument is the list of fields we have, the second is 970102087Sluigi * the list of fields we want to be printed. 971101978Sluigi * 972102087Sluigi * Special cases if we have provided a MAC header: 973102087Sluigi * + if the rule does not contain IP addresses/ports, do not print them; 974102087Sluigi * + if the rule does not contain an IP proto, print "all" instead of "ip"; 975102087Sluigi * 976102087Sluigi * Once we have 'have_options', IP header fields are printed as options. 97798943Sluigi */ 978101978Sluigi#define HAVE_PROTO 0x0001 979101978Sluigi#define HAVE_SRCIP 0x0002 980101978Sluigi#define HAVE_DSTIP 0x0004 981101978Sluigi#define HAVE_MAC 0x0008 982101978Sluigi#define HAVE_MACTYPE 0x0010 983102087Sluigi#define HAVE_OPTIONS 0x8000 98498943Sluigi 985101978Sluigi#define HAVE_IP (HAVE_PROTO | HAVE_SRCIP | HAVE_DSTIP) 98698943Sluigistatic void 987102087Sluigishow_prerequisites(int *flags, int want, int cmd) 98898943Sluigi{ 989123495Sluigi if (comment_only) 990123495Sluigi return; 991102087Sluigi if ( (*flags & HAVE_IP) == HAVE_IP) 992102087Sluigi *flags |= HAVE_OPTIONS; 993102087Sluigi 994102087Sluigi if ( (*flags & (HAVE_MAC|HAVE_MACTYPE|HAVE_OPTIONS)) == HAVE_MAC && 995102087Sluigi cmd != O_MAC_TYPE) { 996102087Sluigi /* 997102087Sluigi * mac-type was optimized out by the compiler, 998102087Sluigi * restore it 999102087Sluigi */ 1000102087Sluigi printf(" any"); 1001102087Sluigi *flags |= HAVE_MACTYPE | HAVE_OPTIONS; 1002102087Sluigi return; 1003101978Sluigi } 1004102087Sluigi if ( !(*flags & HAVE_OPTIONS)) { 1005102087Sluigi if ( !(*flags & HAVE_PROTO) && (want & HAVE_PROTO)) 1006102087Sluigi printf(" ip"); 1007102087Sluigi if ( !(*flags & HAVE_SRCIP) && (want & HAVE_SRCIP)) 1008102087Sluigi printf(" from any"); 1009102087Sluigi if ( !(*flags & HAVE_DSTIP) && (want & HAVE_DSTIP)) 1010102087Sluigi printf(" to any"); 1011102087Sluigi } 101298943Sluigi *flags |= want; 101398943Sluigi} 101498943Sluigi 101598943Sluigistatic void 1016112189Smaximshow_ipfw(struct ip_fw *rule, int pcwidth, int bcwidth) 101798943Sluigi{ 1018107291Skeramida static int twidth = 0; 101998943Sluigi int l; 102098943Sluigi ipfw_insn *cmd; 1021117626Sluigi char *comment = NULL; /* ptr to comment if we have one */ 102298943Sluigi int proto = 0; /* default */ 102398943Sluigi int flags = 0; /* prerequisites */ 102498943Sluigi ipfw_insn_log *logptr = NULL; /* set if we find an O_LOG */ 1025136071Sgreen ipfw_insn_altq *altqptr = NULL; /* set if we find an O_ALTQ */ 102698943Sluigi int or_block = 0; /* we are in an or block */ 1027117328Sluigi uint32_t set_disable; 102898943Sluigi 1029115793Sticso bcopy(&rule->next_rule, &set_disable, sizeof(set_disable)); 1030101628Sluigi 1031101628Sluigi if (set_disable & (1 << rule->set)) { /* disabled */ 1032101628Sluigi if (!show_sets) 1033101628Sluigi return; 1034101628Sluigi else 1035101628Sluigi printf("# DISABLED "); 1036101628Sluigi } 103798943Sluigi printf("%05u ", rule->rulenum); 103898943Sluigi 1039117469Sluigi if (pcwidth>0 || bcwidth>0) 1040115793Sticso printf("%*llu %*llu ", pcwidth, align_uint64(&rule->pcnt), 1041115793Sticso bcwidth, align_uint64(&rule->bcnt)); 104298943Sluigi 1043117472Sluigi if (do_time == 2) 1044117472Sluigi printf("%10u ", rule->timestamp); 1045117472Sluigi else if (do_time == 1) { 1046107291Skeramida char timestr[30]; 1047107291Skeramida time_t t = (time_t)0; 1048107291Skeramida 1049107291Skeramida if (twidth == 0) { 1050107291Skeramida strcpy(timestr, ctime(&t)); 1051107291Skeramida *strchr(timestr, '\n') = '\0'; 1052107291Skeramida twidth = strlen(timestr); 1053107291Skeramida } 105498943Sluigi if (rule->timestamp) { 1055117469Sluigi#if _FreeBSD_version < 500000 /* XXX check */ 1056117469Sluigi#define _long_to_time(x) (time_t)(x) 1057117469Sluigi#endif 1058107291Skeramida t = _long_to_time(rule->timestamp); 105998943Sluigi 106098943Sluigi strcpy(timestr, ctime(&t)); 106198943Sluigi *strchr(timestr, '\n') = '\0'; 106298943Sluigi printf("%s ", timestr); 106398943Sluigi } else { 1064107291Skeramida printf("%*s", twidth, " "); 106598943Sluigi } 106698943Sluigi } 106798943Sluigi 1068101628Sluigi if (show_sets) 1069101628Sluigi printf("set %d ", rule->set); 1070101628Sluigi 107198943Sluigi /* 1072107289Sluigi * print the optional "match probability" 1073107289Sluigi */ 1074107289Sluigi if (rule->cmd_len > 0) { 1075107289Sluigi cmd = rule->cmd ; 1076107289Sluigi if (cmd->opcode == O_PROB) { 1077107289Sluigi ipfw_insn_u32 *p = (ipfw_insn_u32 *)cmd; 1078107289Sluigi double d = 1.0 * p->d[0]; 1079107289Sluigi 1080107289Sluigi d = (d / 0x7fffffff); 1081107289Sluigi printf("prob %f ", d); 1082107289Sluigi } 1083107289Sluigi } 1084107289Sluigi 1085107289Sluigi /* 108698943Sluigi * first print actions 108798943Sluigi */ 108898943Sluigi for (l = rule->cmd_len - rule->act_ofs, cmd = ACTION_PTR(rule); 108998943Sluigi l > 0 ; l -= F_LEN(cmd), cmd += F_LEN(cmd)) { 109098943Sluigi switch(cmd->opcode) { 109198943Sluigi case O_CHECK_STATE: 109298943Sluigi printf("check-state"); 1093102087Sluigi flags = HAVE_IP; /* avoid printing anything else */ 109498943Sluigi break; 109598943Sluigi 109698943Sluigi case O_ACCEPT: 109798943Sluigi printf("allow"); 109898943Sluigi break; 109998943Sluigi 110098943Sluigi case O_COUNT: 110198943Sluigi printf("count"); 110298943Sluigi break; 110398943Sluigi 110498943Sluigi case O_DENY: 110598943Sluigi printf("deny"); 110698943Sluigi break; 110798943Sluigi 110899475Sluigi case O_REJECT: 110999475Sluigi if (cmd->arg1 == ICMP_REJECT_RST) 111099475Sluigi printf("reset"); 111199475Sluigi else if (cmd->arg1 == ICMP_UNREACH_HOST) 111299475Sluigi printf("reject"); 111399475Sluigi else 111499475Sluigi print_reject_code(cmd->arg1); 111599475Sluigi break; 111699475Sluigi 111798943Sluigi case O_SKIPTO: 111898943Sluigi printf("skipto %u", cmd->arg1); 111998943Sluigi break; 112098943Sluigi 112198943Sluigi case O_PIPE: 112298943Sluigi printf("pipe %u", cmd->arg1); 112398943Sluigi break; 112498943Sluigi 112598943Sluigi case O_QUEUE: 112698943Sluigi printf("queue %u", cmd->arg1); 112798943Sluigi break; 112898943Sluigi 112998943Sluigi case O_DIVERT: 113098943Sluigi printf("divert %u", cmd->arg1); 113198943Sluigi break; 113298943Sluigi 113398943Sluigi case O_TEE: 113498943Sluigi printf("tee %u", cmd->arg1); 113598943Sluigi break; 113698943Sluigi 113798943Sluigi case O_FORWARD_IP: 113898943Sluigi { 113998943Sluigi ipfw_insn_sa *s = (ipfw_insn_sa *)cmd; 114098943Sluigi 114198943Sluigi printf("fwd %s", inet_ntoa(s->sa.sin_addr)); 114298943Sluigi if (s->sa.sin_port) 1143103241Sluigi printf(",%d", s->sa.sin_port); 114498943Sluigi } 114598943Sluigi break; 114698943Sluigi 114798943Sluigi case O_LOG: /* O_LOG is printed last */ 114898943Sluigi logptr = (ipfw_insn_log *)cmd; 114998943Sluigi break; 115098943Sluigi 1151136071Sgreen case O_ALTQ: /* O_ALTQ is printed after O_LOG */ 1152136071Sgreen altqptr = (ipfw_insn_altq *)cmd; 1153136071Sgreen break; 1154136071Sgreen 115598943Sluigi default: 1156136071Sgreen printf("** unrecognized action %d len %d ", 115798943Sluigi cmd->opcode, cmd->len); 115898943Sluigi } 115998943Sluigi } 116098943Sluigi if (logptr) { 116198943Sluigi if (logptr->max_log > 0) 116299909Sluigi printf(" log logamount %d", logptr->max_log); 116398943Sluigi else 116499909Sluigi printf(" log"); 116598943Sluigi } 1166136071Sgreen if (altqptr) { 1167136071Sgreen const char *qname; 1168102087Sluigi 1169136071Sgreen qname = altq_qid_to_name(altqptr->qid); 1170136071Sgreen if (qname == NULL) 1171136071Sgreen printf(" altq ?<%u>", altqptr->qid); 1172136071Sgreen else 1173136071Sgreen printf(" altq %s", qname); 1174136071Sgreen } 1175136071Sgreen 117698943Sluigi /* 1177102087Sluigi * then print the body. 117898943Sluigi */ 1179102087Sluigi if (rule->_pad & 1) { /* empty rules before options */ 1180102098Sluigi if (!do_compact) 1181102098Sluigi printf(" ip from any to any"); 1182102087Sluigi flags |= HAVE_IP | HAVE_OPTIONS; 1183102087Sluigi } 1184102087Sluigi 1185123495Sluigi if (comment_only) 1186123495Sluigi comment = "..."; 1187123495Sluigi 118898943Sluigi for (l = rule->act_ofs, cmd = rule->cmd ; 118998943Sluigi l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 119099475Sluigi /* useful alias */ 119199475Sluigi ipfw_insn_u32 *cmd32 = (ipfw_insn_u32 *)cmd; 119298943Sluigi 1193123495Sluigi if (comment_only) { 1194123495Sluigi if (cmd->opcode != O_NOP) 1195123495Sluigi continue; 1196123495Sluigi printf(" // %s\n", (char *)(cmd + 1)); 1197123495Sluigi return; 1198123495Sluigi } 1199123495Sluigi 1200102087Sluigi show_prerequisites(&flags, 0, cmd->opcode); 1201102087Sluigi 120298943Sluigi switch(cmd->opcode) { 1203117577Sluigi case O_PROB: 1204107289Sluigi break; /* done already */ 1205107289Sluigi 120698943Sluigi case O_PROBE_STATE: 120798943Sluigi break; /* no need to print anything here */ 120898943Sluigi 120998943Sluigi case O_MACADDR2: { 121098943Sluigi ipfw_insn_mac *m = (ipfw_insn_mac *)cmd; 1211102087Sluigi 1212102087Sluigi if ((cmd->len & F_OR) && !or_block) 1213102087Sluigi printf(" {"); 121498943Sluigi if (cmd->len & F_NOT) 121598943Sluigi printf(" not"); 1216102087Sluigi printf(" MAC"); 1217102087Sluigi flags |= HAVE_MAC; 1218117577Sluigi print_mac(m->addr, m->mask); 1219117577Sluigi print_mac(m->addr + 6, m->mask + 6); 122098943Sluigi } 122198943Sluigi break; 122298943Sluigi 122398943Sluigi case O_MAC_TYPE: 1224102087Sluigi if ((cmd->len & F_OR) && !or_block) 1225102087Sluigi printf(" {"); 1226102087Sluigi print_newports((ipfw_insn_u16 *)cmd, IPPROTO_ETHERTYPE, 1227102087Sluigi (flags & HAVE_OPTIONS) ? cmd->opcode : 0); 1228102087Sluigi flags |= HAVE_MAC | HAVE_MACTYPE | HAVE_OPTIONS; 122998943Sluigi break; 123098943Sluigi 123198943Sluigi case O_IP_SRC: 1232130281Sru case O_IP_SRC_LOOKUP: 123398943Sluigi case O_IP_SRC_MASK: 123498943Sluigi case O_IP_SRC_ME: 123598943Sluigi case O_IP_SRC_SET: 1236102087Sluigi show_prerequisites(&flags, HAVE_PROTO, 0); 123798943Sluigi if (!(flags & HAVE_SRCIP)) 123898943Sluigi printf(" from"); 123998943Sluigi if ((cmd->len & F_OR) && !or_block) 124098943Sluigi printf(" {"); 1241102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1242102087Sluigi (flags & HAVE_OPTIONS) ? " src-ip" : ""); 124398943Sluigi flags |= HAVE_SRCIP; 124498943Sluigi break; 124598943Sluigi 124698943Sluigi case O_IP_DST: 1247130281Sru case O_IP_DST_LOOKUP: 124898943Sluigi case O_IP_DST_MASK: 124998943Sluigi case O_IP_DST_ME: 125098943Sluigi case O_IP_DST_SET: 1251102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 125298943Sluigi if (!(flags & HAVE_DSTIP)) 125398943Sluigi printf(" to"); 125498943Sluigi if ((cmd->len & F_OR) && !or_block) 125598943Sluigi printf(" {"); 1256102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1257102087Sluigi (flags & HAVE_OPTIONS) ? " dst-ip" : ""); 125898943Sluigi flags |= HAVE_DSTIP; 125998943Sluigi break; 126098943Sluigi 126198943Sluigi case O_IP_DSTPORT: 1262102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 126398943Sluigi case O_IP_SRCPORT: 1264102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 1265101641Sluigi if ((cmd->len & F_OR) && !or_block) 1266101641Sluigi printf(" {"); 1267102087Sluigi print_newports((ipfw_insn_u16 *)cmd, proto, 1268102087Sluigi (flags & HAVE_OPTIONS) ? cmd->opcode : 0); 126998943Sluigi break; 127098943Sluigi 127198943Sluigi case O_PROTO: { 127298943Sluigi struct protoent *pe; 127398943Sluigi 127498943Sluigi if ((cmd->len & F_OR) && !or_block) 127598943Sluigi printf(" {"); 127698943Sluigi if (cmd->len & F_NOT) 127798943Sluigi printf(" not"); 127898943Sluigi proto = cmd->arg1; 127998943Sluigi pe = getprotobynumber(cmd->arg1); 1280102087Sluigi if (flags & HAVE_OPTIONS) 1281102087Sluigi printf(" proto"); 128298943Sluigi if (pe) 128398943Sluigi printf(" %s", pe->p_name); 128498943Sluigi else 128598943Sluigi printf(" %u", cmd->arg1); 128698943Sluigi } 128798943Sluigi flags |= HAVE_PROTO; 128898943Sluigi break; 1289106505Smaxim 129098943Sluigi default: /*options ... */ 1291102087Sluigi show_prerequisites(&flags, HAVE_IP | HAVE_OPTIONS, 0); 129298943Sluigi if ((cmd->len & F_OR) && !or_block) 129398943Sluigi printf(" {"); 129498943Sluigi if (cmd->len & F_NOT && cmd->opcode != O_IN) 129598943Sluigi printf(" not"); 129698943Sluigi switch(cmd->opcode) { 129798943Sluigi case O_FRAG: 129898943Sluigi printf(" frag"); 129998943Sluigi break; 130098943Sluigi 130198943Sluigi case O_IN: 130298943Sluigi printf(cmd->len & F_NOT ? " out" : " in"); 130398943Sluigi break; 130498943Sluigi 1305136071Sgreen case O_DIVERTED: 1306136071Sgreen switch (cmd->arg1) { 1307136071Sgreen case 3: 1308136071Sgreen printf(" diverted"); 1309136071Sgreen break; 1310136071Sgreen case 1: 1311136071Sgreen printf(" diverted-loopback"); 1312136071Sgreen break; 1313136071Sgreen case 2: 1314136071Sgreen printf(" diverted-output"); 1315136071Sgreen break; 1316136071Sgreen default: 1317136071Sgreen printf(" diverted-?<%u>", cmd->arg1); 1318136071Sgreen break; 1319136071Sgreen } 1320136071Sgreen break; 1321136071Sgreen 132298943Sluigi case O_LAYER2: 132398943Sluigi printf(" layer2"); 132498943Sluigi break; 132598943Sluigi case O_XMIT: 132698943Sluigi case O_RECV: 132798943Sluigi case O_VIA: { 1328117469Sluigi char const *s; 132998943Sluigi ipfw_insn_if *cmdif = (ipfw_insn_if *)cmd; 133098943Sluigi 133198943Sluigi if (cmd->opcode == O_XMIT) 133298943Sluigi s = "xmit"; 133398943Sluigi else if (cmd->opcode == O_RECV) 133498943Sluigi s = "recv"; 1335117469Sluigi else /* if (cmd->opcode == O_VIA) */ 133698943Sluigi s = "via"; 133798943Sluigi if (cmdif->name[0] == '\0') 133899475Sluigi printf(" %s %s", s, 133999475Sluigi inet_ntoa(cmdif->p.ip)); 1340121816Sbrooks printf(" %s %s", s, cmdif->name); 134198943Sluigi } 134298943Sluigi break; 134398943Sluigi 134498943Sluigi case O_IPID: 1345116690Sluigi if (F_LEN(cmd) == 1) 1346116690Sluigi printf(" ipid %u", cmd->arg1 ); 1347116690Sluigi else 1348116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1349116690Sluigi O_IPID); 135098943Sluigi break; 135198943Sluigi 135298943Sluigi case O_IPTTL: 1353116690Sluigi if (F_LEN(cmd) == 1) 1354116690Sluigi printf(" ipttl %u", cmd->arg1 ); 1355116690Sluigi else 1356116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1357116690Sluigi O_IPTTL); 135898943Sluigi break; 135998943Sluigi 136098943Sluigi case O_IPVER: 136198943Sluigi printf(" ipver %u", cmd->arg1 ); 136298943Sluigi break; 136398943Sluigi 136499475Sluigi case O_IPPRECEDENCE: 136599475Sluigi printf(" ipprecedence %u", (cmd->arg1) >> 5 ); 136699475Sluigi break; 136799475Sluigi 136898943Sluigi case O_IPLEN: 1369116690Sluigi if (F_LEN(cmd) == 1) 1370116690Sluigi printf(" iplen %u", cmd->arg1 ); 1371116690Sluigi else 1372116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1373116690Sluigi O_IPLEN); 137498943Sluigi break; 137598943Sluigi 1376101116Sluigi case O_IPOPT: 137798943Sluigi print_flags("ipoptions", cmd, f_ipopts); 137898943Sluigi break; 137998943Sluigi 138099475Sluigi case O_IPTOS: 138199475Sluigi print_flags("iptos", cmd, f_iptos); 138299475Sluigi break; 138399475Sluigi 138499475Sluigi case O_ICMPTYPE: 138599475Sluigi print_icmptypes((ipfw_insn_u32 *)cmd); 138699475Sluigi break; 138799475Sluigi 138898943Sluigi case O_ESTAB: 138998943Sluigi printf(" established"); 139098943Sluigi break; 139198943Sluigi 139298943Sluigi case O_TCPFLAGS: 139398943Sluigi print_flags("tcpflags", cmd, f_tcpflags); 139498943Sluigi break; 139598943Sluigi 139698943Sluigi case O_TCPOPTS: 139798943Sluigi print_flags("tcpoptions", cmd, f_tcpopts); 139898943Sluigi break; 139998943Sluigi 140098943Sluigi case O_TCPWIN: 140198943Sluigi printf(" tcpwin %d", ntohs(cmd->arg1)); 140298943Sluigi break; 140398943Sluigi 140498943Sluigi case O_TCPACK: 140598943Sluigi printf(" tcpack %d", ntohl(cmd32->d[0])); 140698943Sluigi break; 140798943Sluigi 140898943Sluigi case O_TCPSEQ: 140998943Sluigi printf(" tcpseq %d", ntohl(cmd32->d[0])); 141098943Sluigi break; 141198943Sluigi 141298943Sluigi case O_UID: 141398943Sluigi { 141498943Sluigi struct passwd *pwd = getpwuid(cmd32->d[0]); 141598943Sluigi 141698943Sluigi if (pwd) 141798943Sluigi printf(" uid %s", pwd->pw_name); 141898943Sluigi else 141998943Sluigi printf(" uid %u", cmd32->d[0]); 142098943Sluigi } 142198943Sluigi break; 142298943Sluigi 142398943Sluigi case O_GID: 142498943Sluigi { 142598943Sluigi struct group *grp = getgrgid(cmd32->d[0]); 142698943Sluigi 142798943Sluigi if (grp) 142898943Sluigi printf(" gid %s", grp->gr_name); 142998943Sluigi else 143098943Sluigi printf(" gid %u", cmd32->d[0]); 143198943Sluigi } 143298943Sluigi break; 143398943Sluigi 1434133600Scsjp case O_JAIL: 1435133600Scsjp printf(" jail %d", cmd32->d[0]); 1436133600Scsjp break; 1437133600Scsjp 1438112250Scjc case O_VERREVPATH: 1439112250Scjc printf(" verrevpath"); 1440112250Scjc break; 1441116919Sluigi 1442128575Sandre case O_VERSRCREACH: 1443128575Sandre printf(" versrcreach"); 1444128575Sandre break; 1445128575Sandre 1446133387Sandre case O_ANTISPOOF: 1447133387Sandre printf(" antispoof"); 1448133387Sandre break; 1449133387Sandre 1450117241Sluigi case O_IPSEC: 1451117241Sluigi printf(" ipsec"); 1452117241Sluigi break; 1453117241Sluigi 1454117469Sluigi case O_NOP: 1455117626Sluigi comment = (char *)(cmd + 1); 1456117469Sluigi break; 1457117469Sluigi 145898943Sluigi case O_KEEP_STATE: 145998943Sluigi printf(" keep-state"); 146098943Sluigi break; 146198943Sluigi 146298943Sluigi case O_LIMIT: 146398943Sluigi { 146498943Sluigi struct _s_x *p = limit_masks; 146598943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 1466117328Sluigi uint8_t x = c->limit_mask; 1467117469Sluigi char const *comma = " "; 146898943Sluigi 146998943Sluigi printf(" limit"); 1470117577Sluigi for (; p->x != 0 ; p++) 147199909Sluigi if ((x & p->x) == p->x) { 147298943Sluigi x &= ~p->x; 147398943Sluigi printf("%s%s", comma, p->s); 147498943Sluigi comma = ","; 147598943Sluigi } 147698943Sluigi printf(" %d", c->conn_limit); 147798943Sluigi } 147898943Sluigi break; 147998943Sluigi 148098943Sluigi default: 148198943Sluigi printf(" [opcode %d len %d]", 148298943Sluigi cmd->opcode, cmd->len); 148398943Sluigi } 148498943Sluigi } 148598943Sluigi if (cmd->len & F_OR) { 148698943Sluigi printf(" or"); 148798943Sluigi or_block = 1; 148898943Sluigi } else if (or_block) { 148998943Sluigi printf(" }"); 149098943Sluigi or_block = 0; 149198943Sluigi } 149298943Sluigi } 1493102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 1494117626Sluigi if (comment) 1495117626Sluigi printf(" // %s", comment); 149698943Sluigi printf("\n"); 149798943Sluigi} 149898943Sluigi 149998943Sluigistatic void 1500112189Smaximshow_dyn_ipfw(ipfw_dyn_rule *d, int pcwidth, int bcwidth) 150198943Sluigi{ 150298943Sluigi struct protoent *pe; 150398943Sluigi struct in_addr a; 1504115793Sticso uint16_t rulenum; 150598943Sluigi 150698943Sluigi if (!do_expired) { 150798943Sluigi if (!d->expire && !(d->dyn_type == O_LIMIT_PARENT)) 150898943Sluigi return; 150998943Sluigi } 1510115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 1511117328Sluigi printf("%05d", rulenum); 1512117469Sluigi if (pcwidth>0 || bcwidth>0) 1513117328Sluigi printf(" %*llu %*llu (%ds)", pcwidth, 1514117328Sluigi align_uint64(&d->pcnt), bcwidth, 1515117328Sluigi align_uint64(&d->bcnt), d->expire); 151698943Sluigi switch (d->dyn_type) { 151798943Sluigi case O_LIMIT_PARENT: 151898943Sluigi printf(" PARENT %d", d->count); 151998943Sluigi break; 152098943Sluigi case O_LIMIT: 152198943Sluigi printf(" LIMIT"); 152298943Sluigi break; 152398943Sluigi case O_KEEP_STATE: /* bidir, no mask */ 1524106505Smaxim printf(" STATE"); 152598943Sluigi break; 152698943Sluigi } 152798943Sluigi 152898943Sluigi if ((pe = getprotobynumber(d->id.proto)) != NULL) 152998943Sluigi printf(" %s", pe->p_name); 153098943Sluigi else 153198943Sluigi printf(" proto %u", d->id.proto); 153298943Sluigi 153398943Sluigi a.s_addr = htonl(d->id.src_ip); 153498943Sluigi printf(" %s %d", inet_ntoa(a), d->id.src_port); 153598943Sluigi 153698943Sluigi a.s_addr = htonl(d->id.dst_ip); 153798943Sluigi printf(" <-> %s %d", inet_ntoa(a), d->id.dst_port); 153898943Sluigi printf("\n"); 153998943Sluigi} 154098943Sluigi 1541117469Sluigistatic int 154298943Sluigisort_q(const void *pa, const void *pb) 154398943Sluigi{ 154498943Sluigi int rev = (do_sort < 0); 154598943Sluigi int field = rev ? -do_sort : do_sort; 154698943Sluigi long long res = 0; 154798943Sluigi const struct dn_flow_queue *a = pa; 154898943Sluigi const struct dn_flow_queue *b = pb; 154998943Sluigi 155098943Sluigi switch (field) { 155198943Sluigi case 1: /* pkts */ 155298943Sluigi res = a->len - b->len; 155398943Sluigi break; 155498943Sluigi case 2: /* bytes */ 155598943Sluigi res = a->len_bytes - b->len_bytes; 155698943Sluigi break; 155798943Sluigi 155898943Sluigi case 3: /* tot pkts */ 155998943Sluigi res = a->tot_pkts - b->tot_pkts; 156098943Sluigi break; 156198943Sluigi 156298943Sluigi case 4: /* tot bytes */ 156398943Sluigi res = a->tot_bytes - b->tot_bytes; 156498943Sluigi break; 156598943Sluigi } 156698943Sluigi if (res < 0) 156798943Sluigi res = -1; 156898943Sluigi if (res > 0) 156998943Sluigi res = 1; 157098943Sluigi return (int)(rev ? res : -res); 157198943Sluigi} 157298943Sluigi 157398943Sluigistatic void 157498943Sluigilist_queues(struct dn_flow_set *fs, struct dn_flow_queue *q) 157598943Sluigi{ 157698943Sluigi int l; 157798943Sluigi 157898943Sluigi printf(" mask: 0x%02x 0x%08x/0x%04x -> 0x%08x/0x%04x\n", 157998943Sluigi fs->flow_mask.proto, 158098943Sluigi fs->flow_mask.src_ip, fs->flow_mask.src_port, 158198943Sluigi fs->flow_mask.dst_ip, fs->flow_mask.dst_port); 158298943Sluigi if (fs->rq_elements == 0) 158398943Sluigi return; 158498943Sluigi 158598943Sluigi printf("BKT Prot ___Source IP/port____ " 158698943Sluigi "____Dest. IP/port____ Tot_pkt/bytes Pkt/Byte Drp\n"); 158798943Sluigi if (do_sort != 0) 158898943Sluigi heapsort(q, fs->rq_elements, sizeof *q, sort_q); 158998943Sluigi for (l = 0; l < fs->rq_elements; l++) { 159098943Sluigi struct in_addr ina; 159198943Sluigi struct protoent *pe; 159298943Sluigi 159398943Sluigi ina.s_addr = htonl(q[l].id.src_ip); 159498943Sluigi printf("%3d ", q[l].hash_slot); 159598943Sluigi pe = getprotobynumber(q[l].id.proto); 159698943Sluigi if (pe) 159798943Sluigi printf("%-4s ", pe->p_name); 159898943Sluigi else 159998943Sluigi printf("%4u ", q[l].id.proto); 160098943Sluigi printf("%15s/%-5d ", 160198943Sluigi inet_ntoa(ina), q[l].id.src_port); 160298943Sluigi ina.s_addr = htonl(q[l].id.dst_ip); 160398943Sluigi printf("%15s/%-5d ", 160498943Sluigi inet_ntoa(ina), q[l].id.dst_port); 160598943Sluigi printf("%4qu %8qu %2u %4u %3u\n", 160698943Sluigi q[l].tot_pkts, q[l].tot_bytes, 160798943Sluigi q[l].len, q[l].len_bytes, q[l].drops); 160898943Sluigi if (verbose) 160998943Sluigi printf(" S %20qd F %20qd\n", 161098943Sluigi q[l].S, q[l].F); 161198943Sluigi } 161298943Sluigi} 161398943Sluigi 161498943Sluigistatic void 161598943Sluigiprint_flowset_parms(struct dn_flow_set *fs, char *prefix) 161698943Sluigi{ 161798943Sluigi int l; 161898943Sluigi char qs[30]; 161998943Sluigi char plr[30]; 162098943Sluigi char red[90]; /* Display RED parameters */ 162198943Sluigi 162298943Sluigi l = fs->qsize; 162398943Sluigi if (fs->flags_fs & DN_QSIZE_IS_BYTES) { 162498943Sluigi if (l >= 8192) 162598943Sluigi sprintf(qs, "%d KB", l / 1024); 162698943Sluigi else 162798943Sluigi sprintf(qs, "%d B", l); 162898943Sluigi } else 162998943Sluigi sprintf(qs, "%3d sl.", l); 163098943Sluigi if (fs->plr) 163198943Sluigi sprintf(plr, "plr %f", 1.0 * fs->plr / (double)(0x7fffffff)); 163298943Sluigi else 163398943Sluigi plr[0] = '\0'; 163498943Sluigi if (fs->flags_fs & DN_IS_RED) /* RED parameters */ 163598943Sluigi sprintf(red, 163698943Sluigi "\n\t %cRED w_q %f min_th %d max_th %d max_p %f", 163798943Sluigi (fs->flags_fs & DN_IS_GENTLE_RED) ? 'G' : ' ', 163898943Sluigi 1.0 * fs->w_q / (double)(1 << SCALE_RED), 163998943Sluigi SCALE_VAL(fs->min_th), 164098943Sluigi SCALE_VAL(fs->max_th), 164198943Sluigi 1.0 * fs->max_p / (double)(1 << SCALE_RED)); 164298943Sluigi else 164398943Sluigi sprintf(red, "droptail"); 164498943Sluigi 164598943Sluigi printf("%s %s%s %d queues (%d buckets) %s\n", 164698943Sluigi prefix, qs, plr, fs->rq_elements, fs->rq_size, red); 164798943Sluigi} 164898943Sluigi 164998943Sluigistatic void 1650117469Sluigilist_pipes(void *data, uint nbytes, int ac, char *av[]) 165198943Sluigi{ 1652117469Sluigi int rulenum; 165398943Sluigi void *next = data; 165498943Sluigi struct dn_pipe *p = (struct dn_pipe *) data; 165598943Sluigi struct dn_flow_set *fs; 165698943Sluigi struct dn_flow_queue *q; 165798943Sluigi int l; 165898943Sluigi 165998943Sluigi if (ac > 0) 166098943Sluigi rulenum = strtoul(*av++, NULL, 10); 166198943Sluigi else 166298943Sluigi rulenum = 0; 166398943Sluigi for (; nbytes >= sizeof *p; p = (struct dn_pipe *)next) { 166498943Sluigi double b = p->bandwidth; 166598943Sluigi char buf[30]; 166698943Sluigi char prefix[80]; 166798943Sluigi 166898943Sluigi if (p->next != (struct dn_pipe *)DN_IS_PIPE) 166998943Sluigi break; /* done with pipes, now queues */ 167098943Sluigi 167198943Sluigi /* 167298943Sluigi * compute length, as pipe have variable size 167398943Sluigi */ 167498943Sluigi l = sizeof(*p) + p->fs.rq_elements * sizeof(*q); 1675117469Sluigi next = (char *)p + l; 167698943Sluigi nbytes -= l; 167798943Sluigi 1678134225Spjd if ((rulenum != 0 && rulenum != p->pipe_nr) || do_pipe == 2) 167998943Sluigi continue; 168098943Sluigi 168198943Sluigi /* 168298943Sluigi * Print rate (or clocking interface) 168398943Sluigi */ 168498943Sluigi if (p->if_name[0] != '\0') 168598943Sluigi sprintf(buf, "%s", p->if_name); 168698943Sluigi else if (b == 0) 168798943Sluigi sprintf(buf, "unlimited"); 168898943Sluigi else if (b >= 1000000) 168998943Sluigi sprintf(buf, "%7.3f Mbit/s", b/1000000); 169098943Sluigi else if (b >= 1000) 169198943Sluigi sprintf(buf, "%7.3f Kbit/s", b/1000); 169298943Sluigi else 169398943Sluigi sprintf(buf, "%7.3f bit/s ", b); 169498943Sluigi 169598943Sluigi sprintf(prefix, "%05d: %s %4d ms ", 169698943Sluigi p->pipe_nr, buf, p->delay); 169798943Sluigi print_flowset_parms(&(p->fs), prefix); 169898943Sluigi if (verbose) 169998943Sluigi printf(" V %20qd\n", p->V >> MY_M); 1700106505Smaxim 170198943Sluigi q = (struct dn_flow_queue *)(p+1); 170298943Sluigi list_queues(&(p->fs), q); 170398943Sluigi } 170498943Sluigi for (fs = next; nbytes >= sizeof *fs; fs = next) { 170598943Sluigi char prefix[80]; 170698943Sluigi 170798943Sluigi if (fs->next != (struct dn_flow_set *)DN_IS_QUEUE) 170898943Sluigi break; 170998943Sluigi l = sizeof(*fs) + fs->rq_elements * sizeof(*q); 1710117469Sluigi next = (char *)fs + l; 171198943Sluigi nbytes -= l; 1712134225Spjd 1713134225Spjd if (rulenum != 0 && ((rulenum != fs->fs_nr && do_pipe == 2) || 1714134225Spjd (rulenum != fs->parent_nr && do_pipe == 1))) { 1715134225Spjd continue; 1716134225Spjd } 1717134225Spjd 171898943Sluigi q = (struct dn_flow_queue *)(fs+1); 171998943Sluigi sprintf(prefix, "q%05d: weight %d pipe %d ", 172098943Sluigi fs->fs_nr, fs->weight, fs->parent_nr); 172198943Sluigi print_flowset_parms(fs, prefix); 172298943Sluigi list_queues(fs, q); 172398943Sluigi } 172498943Sluigi} 172598943Sluigi 1726101978Sluigi/* 1727101978Sluigi * This one handles all set-related commands 1728101978Sluigi * ipfw set { show | enable | disable } 1729101978Sluigi * ipfw set swap X Y 1730101978Sluigi * ipfw set move X to Y 1731101978Sluigi * ipfw set move rule X to Y 1732101978Sluigi */ 173398943Sluigistatic void 1734101978Sluigisets_handler(int ac, char *av[]) 1735101978Sluigi{ 1736117328Sluigi uint32_t set_disable, masks[2]; 1737101978Sluigi int i, nbytes; 1738117328Sluigi uint16_t rulenum; 1739117328Sluigi uint8_t cmd, new_set; 1740101978Sluigi 1741101978Sluigi ac--; 1742101978Sluigi av++; 1743101978Sluigi 1744101978Sluigi if (!ac) 1745101978Sluigi errx(EX_USAGE, "set needs command"); 1746101978Sluigi if (!strncmp(*av, "show", strlen(*av)) ) { 1747101978Sluigi void *data; 1748117469Sluigi char const *msg; 1749101978Sluigi 1750101978Sluigi nbytes = sizeof(struct ip_fw); 1751117328Sluigi if ((data = calloc(1, nbytes)) == NULL) 1752117328Sluigi err(EX_OSERR, "calloc"); 1753119740Stmm if (do_cmd(IP_FW_GET, data, (uintptr_t)&nbytes) < 0) 1754101978Sluigi err(EX_OSERR, "getsockopt(IP_FW_GET)"); 1755115793Sticso bcopy(&((struct ip_fw *)data)->next_rule, 1756115793Sticso &set_disable, sizeof(set_disable)); 1757101978Sluigi 1758117655Sluigi for (i = 0, msg = "disable" ; i < RESVD_SET; i++) 1759117577Sluigi if ((set_disable & (1<<i))) { 1760101978Sluigi printf("%s %d", msg, i); 1761101978Sluigi msg = ""; 1762101978Sluigi } 1763101978Sluigi msg = (set_disable) ? " enable" : "enable"; 1764117655Sluigi for (i = 0; i < RESVD_SET; i++) 1765117577Sluigi if (!(set_disable & (1<<i))) { 1766101978Sluigi printf("%s %d", msg, i); 1767101978Sluigi msg = ""; 1768101978Sluigi } 1769101978Sluigi printf("\n"); 1770101978Sluigi } else if (!strncmp(*av, "swap", strlen(*av))) { 1771101978Sluigi ac--; av++; 1772101978Sluigi if (ac != 2) 1773101978Sluigi errx(EX_USAGE, "set swap needs 2 set numbers\n"); 1774101978Sluigi rulenum = atoi(av[0]); 1775101978Sluigi new_set = atoi(av[1]); 1776117655Sluigi if (!isdigit(*(av[0])) || rulenum > RESVD_SET) 1777101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[0]); 1778117655Sluigi if (!isdigit(*(av[1])) || new_set > RESVD_SET) 1779101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[1]); 1780101978Sluigi masks[0] = (4 << 24) | (new_set << 16) | (rulenum); 1781117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(uint32_t)); 1782101978Sluigi } else if (!strncmp(*av, "move", strlen(*av))) { 1783101978Sluigi ac--; av++; 1784101978Sluigi if (ac && !strncmp(*av, "rule", strlen(*av))) { 1785101978Sluigi cmd = 2; 1786101978Sluigi ac--; av++; 1787101978Sluigi } else 1788101978Sluigi cmd = 3; 1789101978Sluigi if (ac != 3 || strncmp(av[1], "to", strlen(*av))) 1790101978Sluigi errx(EX_USAGE, "syntax: set move [rule] X to Y\n"); 1791101978Sluigi rulenum = atoi(av[0]); 1792101978Sluigi new_set = atoi(av[2]); 1793117655Sluigi if (!isdigit(*(av[0])) || (cmd == 3 && rulenum > RESVD_SET) || 1794101978Sluigi (cmd == 2 && rulenum == 65535) ) 1795101978Sluigi errx(EX_DATAERR, "invalid source number %s\n", av[0]); 1796117655Sluigi if (!isdigit(*(av[2])) || new_set > RESVD_SET) 1797101978Sluigi errx(EX_DATAERR, "invalid dest. set %s\n", av[1]); 1798101978Sluigi masks[0] = (cmd << 24) | (new_set << 16) | (rulenum); 1799117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(uint32_t)); 1800101978Sluigi } else if (!strncmp(*av, "disable", strlen(*av)) || 1801101978Sluigi !strncmp(*av, "enable", strlen(*av)) ) { 1802101978Sluigi int which = !strncmp(*av, "enable", strlen(*av)) ? 1 : 0; 1803101978Sluigi 1804101978Sluigi ac--; av++; 1805101978Sluigi masks[0] = masks[1] = 0; 1806101978Sluigi 1807101978Sluigi while (ac) { 1808101978Sluigi if (isdigit(**av)) { 1809101978Sluigi i = atoi(*av); 1810117655Sluigi if (i < 0 || i > RESVD_SET) 1811101978Sluigi errx(EX_DATAERR, 1812101978Sluigi "invalid set number %d\n", i); 1813101978Sluigi masks[which] |= (1<<i); 1814101978Sluigi } else if (!strncmp(*av, "disable", strlen(*av))) 1815101978Sluigi which = 0; 1816101978Sluigi else if (!strncmp(*av, "enable", strlen(*av))) 1817101978Sluigi which = 1; 1818101978Sluigi else 1819101978Sluigi errx(EX_DATAERR, 1820101978Sluigi "invalid set command %s\n", *av); 1821101978Sluigi av++; ac--; 1822101978Sluigi } 1823101978Sluigi if ( (masks[0] & masks[1]) != 0 ) 1824101978Sluigi errx(EX_DATAERR, 1825101978Sluigi "cannot enable and disable the same set\n"); 1826101978Sluigi 1827117328Sluigi i = do_cmd(IP_FW_DEL, masks, sizeof(masks)); 1828101978Sluigi if (i) 1829101978Sluigi warn("set enable/disable: setsockopt(IP_FW_DEL)"); 1830101978Sluigi } else 1831101978Sluigi errx(EX_USAGE, "invalid set command %s\n", *av); 1832101978Sluigi} 1833101978Sluigi 1834101978Sluigistatic void 1835109126Sdillonsysctl_handler(int ac, char *av[], int which) 1836109126Sdillon{ 1837109126Sdillon ac--; 1838109126Sdillon av++; 1839109126Sdillon 1840119668Smaxim if (ac == 0) { 1841109126Sdillon warnx("missing keyword to enable/disable\n"); 1842109126Sdillon } else if (strncmp(*av, "firewall", strlen(*av)) == 0) { 1843116770Sluigi sysctlbyname("net.inet.ip.fw.enable", NULL, 0, 1844116770Sluigi &which, sizeof(which)); 1845109126Sdillon } else if (strncmp(*av, "one_pass", strlen(*av)) == 0) { 1846116770Sluigi sysctlbyname("net.inet.ip.fw.one_pass", NULL, 0, 1847116770Sluigi &which, sizeof(which)); 1848109126Sdillon } else if (strncmp(*av, "debug", strlen(*av)) == 0) { 1849116770Sluigi sysctlbyname("net.inet.ip.fw.debug", NULL, 0, 1850116770Sluigi &which, sizeof(which)); 1851109126Sdillon } else if (strncmp(*av, "verbose", strlen(*av)) == 0) { 1852116770Sluigi sysctlbyname("net.inet.ip.fw.verbose", NULL, 0, 1853116770Sluigi &which, sizeof(which)); 1854109126Sdillon } else if (strncmp(*av, "dyn_keepalive", strlen(*av)) == 0) { 1855116770Sluigi sysctlbyname("net.inet.ip.fw.dyn_keepalive", NULL, 0, 1856116770Sluigi &which, sizeof(which)); 1857136071Sgreen } else if (strncmp(*av, "altq", strlen(*av)) == 0) { 1858136071Sgreen altq_set_enabled(which); 1859109126Sdillon } else { 1860109126Sdillon warnx("unrecognize enable/disable keyword: %s\n", *av); 1861109126Sdillon } 1862109126Sdillon} 1863109126Sdillon 1864109126Sdillonstatic void 1865117469Sluigilist(int ac, char *av[], int show_counters) 186698943Sluigi{ 186798943Sluigi struct ip_fw *r; 186898943Sluigi ipfw_dyn_rule *dynrules, *d; 186998943Sluigi 1870117469Sluigi#define NEXT(r) ((struct ip_fw *)((char *)r + RULESIZE(r))) 1871117469Sluigi char *lim; 1872117469Sluigi void *data = NULL; 1873112189Smaxim int bcwidth, n, nbytes, nstat, ndyn, pcwidth, width; 187498943Sluigi int exitval = EX_OK; 187598943Sluigi int lac; 187698943Sluigi char **lav; 1877117469Sluigi u_long rnum, last; 187898943Sluigi char *endptr; 187998943Sluigi int seen = 0; 188098943Sluigi 188198943Sluigi const int ocmd = do_pipe ? IP_DUMMYNET_GET : IP_FW_GET; 188298943Sluigi int nalloc = 1024; /* start somewhere... */ 188398943Sluigi 1884135036Smaxim last = 0; 1885135036Smaxim 1886117328Sluigi if (test_only) { 1887117328Sluigi fprintf(stderr, "Testing only, list disabled\n"); 1888117328Sluigi return; 1889117328Sluigi } 1890117328Sluigi 189198943Sluigi ac--; 189298943Sluigi av++; 189398943Sluigi 189498943Sluigi /* get rules or pipes from kernel, resizing array as necessary */ 189598943Sluigi nbytes = nalloc; 189698943Sluigi 189798943Sluigi while (nbytes >= nalloc) { 189898943Sluigi nalloc = nalloc * 2 + 200; 189998943Sluigi nbytes = nalloc; 190098943Sluigi if ((data = realloc(data, nbytes)) == NULL) 190198943Sluigi err(EX_OSERR, "realloc"); 1902119740Stmm if (do_cmd(ocmd, data, (uintptr_t)&nbytes) < 0) 190398943Sluigi err(EX_OSERR, "getsockopt(IP_%s_GET)", 190498943Sluigi do_pipe ? "DUMMYNET" : "FW"); 190598943Sluigi } 190698943Sluigi 190798943Sluigi if (do_pipe) { 190898943Sluigi list_pipes(data, nbytes, ac, av); 190998943Sluigi goto done; 191098943Sluigi } 191198943Sluigi 191298943Sluigi /* 191398943Sluigi * Count static rules. They have variable size so we 191498943Sluigi * need to scan the list to count them. 191598943Sluigi */ 1916117469Sluigi for (nstat = 1, r = data, lim = (char *)data + nbytes; 1917117469Sluigi r->rulenum < 65535 && (char *)r < lim; 1918117469Sluigi ++nstat, r = NEXT(r) ) 191998943Sluigi ; /* nothing */ 192098943Sluigi 192198943Sluigi /* 192298943Sluigi * Count dynamic rules. This is easier as they have 192398943Sluigi * fixed size. 192498943Sluigi */ 1925117469Sluigi r = NEXT(r); 192698943Sluigi dynrules = (ipfw_dyn_rule *)r ; 1927117469Sluigi n = (char *)r - (char *)data; 192898943Sluigi ndyn = (nbytes - n) / sizeof *dynrules; 192998943Sluigi 1930112189Smaxim /* if showing stats, figure out column widths ahead of time */ 1931112189Smaxim bcwidth = pcwidth = 0; 1932117469Sluigi if (show_counters) { 1933117469Sluigi for (n = 0, r = data; n < nstat; n++, r = NEXT(r)) { 1934112189Smaxim /* packet counter */ 1935115793Sticso width = snprintf(NULL, 0, "%llu", 1936115793Sticso align_uint64(&r->pcnt)); 1937112189Smaxim if (width > pcwidth) 1938112189Smaxim pcwidth = width; 1939112189Smaxim 1940112189Smaxim /* byte counter */ 1941115793Sticso width = snprintf(NULL, 0, "%llu", 1942115793Sticso align_uint64(&r->bcnt)); 1943112189Smaxim if (width > bcwidth) 1944112189Smaxim bcwidth = width; 1945112189Smaxim } 1946112189Smaxim } 1947112189Smaxim if (do_dynamic && ndyn) { 1948112189Smaxim for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1949115793Sticso width = snprintf(NULL, 0, "%llu", 1950115793Sticso align_uint64(&d->pcnt)); 1951112189Smaxim if (width > pcwidth) 1952112189Smaxim pcwidth = width; 1953112189Smaxim 1954115793Sticso width = snprintf(NULL, 0, "%llu", 1955115793Sticso align_uint64(&d->bcnt)); 1956112189Smaxim if (width > bcwidth) 1957112189Smaxim bcwidth = width; 1958112189Smaxim } 1959112189Smaxim } 196098943Sluigi /* if no rule numbers were specified, list all rules */ 196198943Sluigi if (ac == 0) { 1962117469Sluigi for (n = 0, r = data; n < nstat; n++, r = NEXT(r) ) 1963112189Smaxim show_ipfw(r, pcwidth, bcwidth); 196498943Sluigi 196598943Sluigi if (do_dynamic && ndyn) { 196698943Sluigi printf("## Dynamic rules (%d):\n", ndyn); 196798943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) 1968112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 196998943Sluigi } 197098943Sluigi goto done; 197198943Sluigi } 197298943Sluigi 197398943Sluigi /* display specific rules requested on command line */ 197498943Sluigi 197598943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 197698943Sluigi /* convert command line rule # */ 1977117469Sluigi last = rnum = strtoul(*lav++, &endptr, 10); 1978117469Sluigi if (*endptr == '-') 1979117469Sluigi last = strtoul(endptr+1, &endptr, 10); 198098943Sluigi if (*endptr) { 198198943Sluigi exitval = EX_USAGE; 198298943Sluigi warnx("invalid rule number: %s", *(lav - 1)); 198398943Sluigi continue; 198498943Sluigi } 1985117469Sluigi for (n = seen = 0, r = data; n < nstat; n++, r = NEXT(r) ) { 1986117469Sluigi if (r->rulenum > last) 198798943Sluigi break; 1988117469Sluigi if (r->rulenum >= rnum && r->rulenum <= last) { 1989112189Smaxim show_ipfw(r, pcwidth, bcwidth); 199098943Sluigi seen = 1; 199198943Sluigi } 199298943Sluigi } 199398943Sluigi if (!seen) { 199498943Sluigi /* give precedence to other error(s) */ 199598943Sluigi if (exitval == EX_OK) 199698943Sluigi exitval = EX_UNAVAILABLE; 199798943Sluigi warnx("rule %lu does not exist", rnum); 199898943Sluigi } 199998943Sluigi } 200098943Sluigi 200198943Sluigi if (do_dynamic && ndyn) { 200298943Sluigi printf("## Dynamic rules:\n"); 200398943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 200498943Sluigi rnum = strtoul(*lav++, &endptr, 10); 2005117469Sluigi if (*endptr == '-') 2006117469Sluigi last = strtoul(endptr+1, &endptr, 10); 200798943Sluigi if (*endptr) 200898943Sluigi /* already warned */ 200998943Sluigi continue; 201098943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) { 2011115793Sticso uint16_t rulenum; 2012115793Sticso 2013115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 2014115793Sticso if (rulenum > rnum) 201598943Sluigi break; 2016117469Sluigi if (r->rulenum >= rnum && r->rulenum <= last) 2017112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 201898943Sluigi } 201998943Sluigi } 202098943Sluigi } 202198943Sluigi 202298943Sluigi ac = 0; 202398943Sluigi 202498943Sluigidone: 202598943Sluigi free(data); 202698943Sluigi 202798943Sluigi if (exitval != EX_OK) 202898943Sluigi exit(exitval); 2029117469Sluigi#undef NEXT 203098943Sluigi} 203198943Sluigi 203298943Sluigistatic void 203398943Sluigishow_usage(void) 203498943Sluigi{ 203598943Sluigi fprintf(stderr, "usage: ipfw [options]\n" 203698943Sluigi"do \"ipfw -h\" or see ipfw manpage for details\n" 203798943Sluigi); 203898943Sluigi exit(EX_USAGE); 203998943Sluigi} 204098943Sluigi 204198943Sluigistatic void 204298943Sluigihelp(void) 204398943Sluigi{ 2044117328Sluigi fprintf(stderr, 2045117328Sluigi"ipfw syntax summary (but please do read the ipfw(8) manpage):\n" 2046123495Sluigi"ipfw [-abcdefhnNqStTv] <command> where <command> is one of:\n" 2047117328Sluigi"add [num] [set N] [prob x] RULE-BODY\n" 2048117328Sluigi"{pipe|queue} N config PIPE-BODY\n" 2049117328Sluigi"[pipe|queue] {zero|delete|show} [N{,N}]\n" 2050117328Sluigi"set [disable N... enable N...] | move [rule] X to Y | swap X Y | show\n" 2051130281Sru"table N {add ip[/bits] [value] | delete ip[/bits] | flush | list}\n" 205298943Sluigi"\n" 2053136071Sgreen"RULE-BODY: check-state [PARAMS] | ACTION [PARAMS] ADDR [OPTION_LIST]\n" 205498943Sluigi"ACTION: check-state | allow | count | deny | reject | skipto N |\n" 205598943Sluigi" {divert|tee} PORT | forward ADDR | pipe N | queue N\n" 2056136071Sgreen"PARAMS: [log [logamount LOGLIMIT]] [altq QUEUE_NAME]\n" 205798943Sluigi"ADDR: [ MAC dst src ether_type ] \n" 2058117544Sluigi" [ from IPADDR [ PORT ] to IPADDR [ PORTLIST ] ]\n" 2059130281Sru"IPADDR: [not] { any | me | ip/bits{x,y,z} | table(t[,v]) | IPLIST }\n" 2060117544Sluigi"IPLIST: { ip | ip/bits | ip:mask }[,IPLIST]\n" 2061117544Sluigi"OPTION_LIST: OPTION [OPTION_LIST]\n" 2062117328Sluigi"OPTION: bridged | {dst-ip|src-ip} ADDR | {dst-port|src-port} LIST |\n" 2063117328Sluigi" estab | frag | {gid|uid} N | icmptypes LIST | in | out | ipid LIST |\n" 2064117328Sluigi" iplen LIST | ipoptions SPEC | ipprecedence | ipsec | iptos SPEC |\n" 2065117328Sluigi" ipttl LIST | ipversion VER | keep-state | layer2 | limit ... |\n" 2066117328Sluigi" mac ... | mac-type LIST | proto LIST | {recv|xmit|via} {IF|IPADDR} |\n" 2067117328Sluigi" setup | {tcpack|tcpseq|tcpwin} NN | tcpflags SPEC | tcpoptions SPEC |\n" 2068133387Sandre" verrevpath | versrcreach | antispoof\n" 206998943Sluigi); 207098943Sluigiexit(0); 207198943Sluigi} 207298943Sluigi 207398943Sluigi 207498943Sluigistatic int 207598943Sluigilookup_host (char *host, struct in_addr *ipaddr) 207698943Sluigi{ 207798943Sluigi struct hostent *he; 207898943Sluigi 207998943Sluigi if (!inet_aton(host, ipaddr)) { 208098943Sluigi if ((he = gethostbyname(host)) == NULL) 208198943Sluigi return(-1); 208298943Sluigi *ipaddr = *(struct in_addr *)he->h_addr_list[0]; 208398943Sluigi } 208498943Sluigi return(0); 208598943Sluigi} 208698943Sluigi 208798943Sluigi/* 208898943Sluigi * fills the addr and mask fields in the instruction as appropriate from av. 208998943Sluigi * Update length as appropriate. 209098943Sluigi * The following formats are allowed: 209198943Sluigi * any matches any IP. Actually returns an empty instruction. 209298943Sluigi * me returns O_IP_*_ME 209398943Sluigi * 1.2.3.4 single IP address 209498943Sluigi * 1.2.3.4:5.6.7.8 address:mask 209598943Sluigi * 1.2.3.4/24 address/mask 209698943Sluigi * 1.2.3.4/26{1,6,5,4,23} set of addresses in a subnet 2097117328Sluigi * We can have multiple comma-separated address/mask entries. 209898943Sluigi */ 209998943Sluigistatic void 210098943Sluigifill_ip(ipfw_insn_ip *cmd, char *av) 210198943Sluigi{ 2102117328Sluigi int len = 0; 2103117328Sluigi uint32_t *d = ((ipfw_insn_u32 *)cmd)->d; 210498943Sluigi 210598943Sluigi cmd->o.len &= ~F_LEN_MASK; /* zero len */ 210698943Sluigi 210798943Sluigi if (!strncmp(av, "any", strlen(av))) 210898943Sluigi return; 210998943Sluigi 211098943Sluigi if (!strncmp(av, "me", strlen(av))) { 211198943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn); 211298943Sluigi return; 211398943Sluigi } 211498943Sluigi 2115130281Sru if (!strncmp(av, "table(", 6)) { 2116130281Sru char *p = strchr(av + 6, ','); 2117130281Sru 2118130281Sru if (p) 2119130281Sru *p++ = '\0'; 2120130281Sru cmd->o.opcode = O_IP_DST_LOOKUP; 2121130281Sru cmd->o.arg1 = strtoul(av + 6, NULL, 0); 2122130281Sru if (p) { 2123130281Sru cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 2124130281Sru d[0] = strtoul(p, NULL, 0); 2125130281Sru } else 2126130281Sru cmd->o.len |= F_INSN_SIZE(ipfw_insn); 2127130281Sru return; 2128130281Sru } 2129130281Sru 2130117328Sluigi while (av) { 2131117328Sluigi /* 2132117328Sluigi * After the address we can have '/' or ':' indicating a mask, 2133117328Sluigi * ',' indicating another address follows, '{' indicating a 2134117328Sluigi * set of addresses of unspecified size. 2135117328Sluigi */ 2136117328Sluigi char *p = strpbrk(av, "/:,{"); 2137117328Sluigi int masklen; 2138117328Sluigi char md; 2139117328Sluigi 214098943Sluigi if (p) { 214198943Sluigi md = *p; 214298943Sluigi *p++ = '\0'; 2143117328Sluigi } else 2144117328Sluigi md = '\0'; 214598943Sluigi 2146117328Sluigi if (lookup_host(av, (struct in_addr *)&d[0]) != 0) 214798943Sluigi errx(EX_NOHOST, "hostname ``%s'' unknown", av); 214898943Sluigi switch (md) { 214998943Sluigi case ':': 2150117328Sluigi if (!inet_aton(p, (struct in_addr *)&d[1])) 215198943Sluigi errx(EX_DATAERR, "bad netmask ``%s''", p); 215298943Sluigi break; 215398943Sluigi case '/': 2154117328Sluigi masklen = atoi(p); 2155117328Sluigi if (masklen == 0) 2156117328Sluigi d[1] = htonl(0); /* mask */ 2157117328Sluigi else if (masklen > 32) 215898943Sluigi errx(EX_DATAERR, "bad width ``%s''", p); 215998943Sluigi else 2160117328Sluigi d[1] = htonl(~0 << (32 - masklen)); 216198943Sluigi break; 2162117328Sluigi case '{': /* no mask, assume /24 and put back the '{' */ 2163117328Sluigi d[1] = htonl(~0 << (32 - 24)); 2164117328Sluigi *(--p) = md; 2165117328Sluigi break; 2166117328Sluigi 2167117328Sluigi case ',': /* single address plus continuation */ 2168117328Sluigi *(--p) = md; 2169117328Sluigi /* FALLTHROUGH */ 2170117328Sluigi case 0: /* initialization value */ 217198943Sluigi default: 2172117328Sluigi d[1] = htonl(~0); /* force /32 */ 217398943Sluigi break; 217498943Sluigi } 2175117328Sluigi d[0] &= d[1]; /* mask base address with mask */ 2176117328Sluigi /* find next separator */ 217798943Sluigi if (p) 2178117328Sluigi p = strpbrk(p, ",{"); 2179117328Sluigi if (p && *p == '{') { 2180117328Sluigi /* 2181117328Sluigi * We have a set of addresses. They are stored as follows: 2182117328Sluigi * arg1 is the set size (powers of 2, 2..256) 2183117328Sluigi * addr is the base address IN HOST FORMAT 2184117328Sluigi * mask.. is an array of arg1 bits (rounded up to 2185117328Sluigi * the next multiple of 32) with bits set 2186117328Sluigi * for each host in the map. 2187117328Sluigi */ 2188117328Sluigi uint32_t *map = (uint32_t *)&cmd->mask; 218998943Sluigi int low, high; 2190117577Sluigi int i = contigmask((uint8_t *)&(d[1]), 32); 219198943Sluigi 2192117328Sluigi if (len > 0) 2193117328Sluigi errx(EX_DATAERR, "address set cannot be in a list"); 2194117328Sluigi if (i < 24 || i > 31) 2195117328Sluigi errx(EX_DATAERR, "invalid set with mask %d\n", i); 2196117328Sluigi cmd->o.arg1 = 1<<(32-i); /* map length */ 2197117328Sluigi d[0] = ntohl(d[0]); /* base addr in host format */ 219898943Sluigi cmd->o.opcode = O_IP_DST_SET; /* default */ 219998943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32) + (cmd->o.arg1+31)/32; 2200101117Sluigi for (i = 0; i < (cmd->o.arg1+31)/32 ; i++) 2201117328Sluigi map[i] = 0; /* clear map */ 220298943Sluigi 2203117328Sluigi av = p + 1; 2204117328Sluigi low = d[0] & 0xff; 220598943Sluigi high = low + cmd->o.arg1 - 1; 2206117328Sluigi /* 2207117328Sluigi * Here, i stores the previous value when we specify a range 2208117328Sluigi * of addresses within a mask, e.g. 45-63. i = -1 means we 2209117328Sluigi * have no previous value. 2210117328Sluigi */ 2211116716Sluigi i = -1; /* previous value in a range */ 221298943Sluigi while (isdigit(*av)) { 221398943Sluigi char *s; 2214117328Sluigi int a = strtol(av, &s, 0); 221598943Sluigi 2216117328Sluigi if (s == av) { /* no parameter */ 2217117328Sluigi if (*av != '}') 2218117328Sluigi errx(EX_DATAERR, "set not closed\n"); 2219117328Sluigi if (i != -1) 2220117328Sluigi errx(EX_DATAERR, "incomplete range %d-", i); 2221117328Sluigi break; 2222117328Sluigi } 2223117328Sluigi if (a < low || a > high) 2224117328Sluigi errx(EX_DATAERR, "addr %d out of range [%d-%d]\n", 222598943Sluigi a, low, high); 222698943Sluigi a -= low; 2227116716Sluigi if (i == -1) /* no previous in range */ 2228116716Sluigi i = a; 2229116716Sluigi else { /* check that range is valid */ 2230116716Sluigi if (i > a) 2231116716Sluigi errx(EX_DATAERR, "invalid range %d-%d", 2232116716Sluigi i+low, a+low); 2233116716Sluigi if (*s == '-') 2234116716Sluigi errx(EX_DATAERR, "double '-' in range"); 2235116716Sluigi } 2236116716Sluigi for (; i <= a; i++) 2237117328Sluigi map[i/32] |= 1<<(i & 31); 2238116716Sluigi i = -1; 2239116716Sluigi if (*s == '-') 2240116716Sluigi i = a; 2241117328Sluigi else if (*s == '}') 2242116716Sluigi break; 224398943Sluigi av = s+1; 224498943Sluigi } 224598943Sluigi return; 224698943Sluigi } 2247117328Sluigi av = p; 2248117328Sluigi if (av) /* then *av must be a ',' */ 2249117328Sluigi av++; 225098943Sluigi 2251117328Sluigi /* Check this entry */ 2252117328Sluigi if (d[1] == 0) { /* "any", specified as x.x.x.x/0 */ 2253117328Sluigi /* 2254117328Sluigi * 'any' turns the entire list into a NOP. 2255117328Sluigi * 'not any' never matches, so it is removed from the 2256117328Sluigi * list unless it is the only item, in which case we 2257117328Sluigi * report an error. 2258117328Sluigi */ 2259117328Sluigi if (cmd->o.len & F_NOT) { /* "not any" never matches */ 2260117328Sluigi if (av == NULL && len == 0) /* only this entry */ 2261117328Sluigi errx(EX_DATAERR, "not any never matches"); 2262117328Sluigi } 2263117328Sluigi /* else do nothing and skip this entry */ 2264128067Smaxim return; 2265117328Sluigi } 2266117328Sluigi /* A single IP can be stored in an optimized format */ 2267117328Sluigi if (d[1] == IP_MASK_ALL && av == NULL && len == 0) { 226898943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 2269117328Sluigi return; 2270117328Sluigi } 2271117328Sluigi len += 2; /* two words... */ 2272117328Sluigi d += 2; 2273117328Sluigi } /* end while */ 2274117328Sluigi cmd->o.len |= len+1; 227598943Sluigi} 227698943Sluigi 227798943Sluigi 227898943Sluigi/* 227998943Sluigi * helper function to process a set of flags and set bits in the 228098943Sluigi * appropriate masks. 228198943Sluigi */ 228298943Sluigistatic void 228398943Sluigifill_flags(ipfw_insn *cmd, enum ipfw_opcodes opcode, 228498943Sluigi struct _s_x *flags, char *p) 228598943Sluigi{ 2286117328Sluigi uint8_t set=0, clear=0; 228798943Sluigi 228898943Sluigi while (p && *p) { 228998943Sluigi char *q; /* points to the separator */ 229098943Sluigi int val; 2291117328Sluigi uint8_t *which; /* mask we are working on */ 229298943Sluigi 229398943Sluigi if (*p == '!') { 229498943Sluigi p++; 229598943Sluigi which = &clear; 229698943Sluigi } else 229798943Sluigi which = &set; 229898943Sluigi q = strchr(p, ','); 229998943Sluigi if (q) 230098943Sluigi *q++ = '\0'; 230198943Sluigi val = match_token(flags, p); 230298943Sluigi if (val <= 0) 230398943Sluigi errx(EX_DATAERR, "invalid flag %s", p); 2304117328Sluigi *which |= (uint8_t)val; 230598943Sluigi p = q; 230698943Sluigi } 230798943Sluigi cmd->opcode = opcode; 230898943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | 1; 230998943Sluigi cmd->arg1 = (set & 0xff) | ( (clear & 0xff) << 8); 231098943Sluigi} 231198943Sluigi 231298943Sluigi 231398943Sluigistatic void 231498943Sluigidelete(int ac, char *av[]) 231598943Sluigi{ 2316117328Sluigi uint32_t rulenum; 2317117469Sluigi struct dn_pipe p; 231898943Sluigi int i; 231998943Sluigi int exitval = EX_OK; 2320101628Sluigi int do_set = 0; 232198943Sluigi 2322117469Sluigi memset(&p, 0, sizeof p); 232398943Sluigi 232498943Sluigi av++; ac--; 2325130013Scsjp NEED1("missing rule specification"); 2326101641Sluigi if (ac > 0 && !strncmp(*av, "set", strlen(*av))) { 2327101978Sluigi do_set = 1; /* delete set */ 2328101628Sluigi ac--; av++; 2329101978Sluigi } 233098943Sluigi 233198943Sluigi /* Rule number */ 233298943Sluigi while (ac && isdigit(**av)) { 233398943Sluigi i = atoi(*av); av++; ac--; 233498943Sluigi if (do_pipe) { 233598943Sluigi if (do_pipe == 1) 2336117469Sluigi p.pipe_nr = i; 233798943Sluigi else 2338117469Sluigi p.fs.fs_nr = i; 2339117469Sluigi i = do_cmd(IP_DUMMYNET_DEL, &p, sizeof p); 234098943Sluigi if (i) { 234198943Sluigi exitval = 1; 234298943Sluigi warn("rule %u: setsockopt(IP_DUMMYNET_DEL)", 2343117469Sluigi do_pipe == 1 ? p.pipe_nr : p.fs.fs_nr); 234498943Sluigi } 234598943Sluigi } else { 2346101978Sluigi rulenum = (i & 0xffff) | (do_set << 24); 2347117328Sluigi i = do_cmd(IP_FW_DEL, &rulenum, sizeof rulenum); 234898943Sluigi if (i) { 234998943Sluigi exitval = EX_UNAVAILABLE; 235098943Sluigi warn("rule %u: setsockopt(IP_FW_DEL)", 235198943Sluigi rulenum); 235298943Sluigi } 235398943Sluigi } 235498943Sluigi } 235598943Sluigi if (exitval != EX_OK) 235698943Sluigi exit(exitval); 235798943Sluigi} 235898943Sluigi 235998943Sluigi 236098943Sluigi/* 236198943Sluigi * fill the interface structure. We do not check the name as we can 236298943Sluigi * create interfaces dynamically, so checking them at insert time 236398943Sluigi * makes relatively little sense. 2364121816Sbrooks * Interface names containing '*', '?', or '[' are assumed to be shell 2365121816Sbrooks * patterns which match interfaces. 236698943Sluigi */ 236798943Sluigistatic void 236898943Sluigifill_iface(ipfw_insn_if *cmd, char *arg) 236998943Sluigi{ 237098943Sluigi cmd->name[0] = '\0'; 237198943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_if); 237298943Sluigi 237398943Sluigi /* Parse the interface or address */ 237498943Sluigi if (!strcmp(arg, "any")) 237598943Sluigi cmd->o.len = 0; /* effectively ignore this command */ 237698943Sluigi else if (!isdigit(*arg)) { 2377121816Sbrooks strlcpy(cmd->name, arg, sizeof(cmd->name)); 2378121816Sbrooks cmd->p.glob = strpbrk(arg, "*?[") != NULL ? 1 : 0; 237998943Sluigi } else if (!inet_aton(arg, &cmd->p.ip)) 238098943Sluigi errx(EX_DATAERR, "bad ip address ``%s''", arg); 238198943Sluigi} 238298943Sluigi 238398943Sluigistatic void 238498943Sluigiconfig_pipe(int ac, char **av) 238598943Sluigi{ 2386117469Sluigi struct dn_pipe p; 238798943Sluigi int i; 238898943Sluigi char *end; 2389117328Sluigi uint32_t a; 239098943Sluigi void *par = NULL; 239198943Sluigi 2392117469Sluigi memset(&p, 0, sizeof p); 239398943Sluigi 239498943Sluigi av++; ac--; 239598943Sluigi /* Pipe number */ 239698943Sluigi if (ac && isdigit(**av)) { 239798943Sluigi i = atoi(*av); av++; ac--; 239898943Sluigi if (do_pipe == 1) 2399117469Sluigi p.pipe_nr = i; 240098943Sluigi else 2401117469Sluigi p.fs.fs_nr = i; 240298943Sluigi } 240399475Sluigi while (ac > 0) { 240498943Sluigi double d; 240598943Sluigi int tok = match_token(dummynet_params, *av); 240698943Sluigi ac--; av++; 240798943Sluigi 240898943Sluigi switch(tok) { 2409101978Sluigi case TOK_NOERROR: 2410117469Sluigi p.fs.flags_fs |= DN_NOERROR; 2411101978Sluigi break; 2412101978Sluigi 241398943Sluigi case TOK_PLR: 241498943Sluigi NEED1("plr needs argument 0..1\n"); 241598943Sluigi d = strtod(av[0], NULL); 241698943Sluigi if (d > 1) 241798943Sluigi d = 1; 241898943Sluigi else if (d < 0) 241998943Sluigi d = 0; 2420117469Sluigi p.fs.plr = (int)(d*0x7fffffff); 242198943Sluigi ac--; av++; 242298943Sluigi break; 242398943Sluigi 242498943Sluigi case TOK_QUEUE: 242598943Sluigi NEED1("queue needs queue size\n"); 242698943Sluigi end = NULL; 2427117469Sluigi p.fs.qsize = strtoul(av[0], &end, 0); 242898943Sluigi if (*end == 'K' || *end == 'k') { 2429117469Sluigi p.fs.flags_fs |= DN_QSIZE_IS_BYTES; 2430117469Sluigi p.fs.qsize *= 1024; 243198943Sluigi } else if (*end == 'B' || !strncmp(end, "by", 2)) { 2432117469Sluigi p.fs.flags_fs |= DN_QSIZE_IS_BYTES; 243398943Sluigi } 243498943Sluigi ac--; av++; 243598943Sluigi break; 243698943Sluigi 243798943Sluigi case TOK_BUCKETS: 243898943Sluigi NEED1("buckets needs argument\n"); 2439117469Sluigi p.fs.rq_size = strtoul(av[0], NULL, 0); 244098943Sluigi ac--; av++; 244198943Sluigi break; 244298943Sluigi 244398943Sluigi case TOK_MASK: 244498943Sluigi NEED1("mask needs mask specifier\n"); 244598943Sluigi /* 244698943Sluigi * per-flow queue, mask is dst_ip, dst_port, 244798943Sluigi * src_ip, src_port, proto measured in bits 244898943Sluigi */ 244998943Sluigi par = NULL; 245098943Sluigi 2451117469Sluigi p.fs.flow_mask.dst_ip = 0; 2452117469Sluigi p.fs.flow_mask.src_ip = 0; 2453117469Sluigi p.fs.flow_mask.dst_port = 0; 2454117469Sluigi p.fs.flow_mask.src_port = 0; 2455117469Sluigi p.fs.flow_mask.proto = 0; 245698943Sluigi end = NULL; 245798943Sluigi 245898943Sluigi while (ac >= 1) { 2459117328Sluigi uint32_t *p32 = NULL; 2460117328Sluigi uint16_t *p16 = NULL; 246198943Sluigi 246298943Sluigi tok = match_token(dummynet_params, *av); 246398943Sluigi ac--; av++; 246498943Sluigi switch(tok) { 246598943Sluigi case TOK_ALL: 246698943Sluigi /* 246798943Sluigi * special case, all bits significant 246898943Sluigi */ 2469117469Sluigi p.fs.flow_mask.dst_ip = ~0; 2470117469Sluigi p.fs.flow_mask.src_ip = ~0; 2471117469Sluigi p.fs.flow_mask.dst_port = ~0; 2472117469Sluigi p.fs.flow_mask.src_port = ~0; 2473117469Sluigi p.fs.flow_mask.proto = ~0; 2474117469Sluigi p.fs.flags_fs |= DN_HAVE_FLOW_MASK; 247598943Sluigi goto end_mask; 247698943Sluigi 247798943Sluigi case TOK_DSTIP: 2478117469Sluigi p32 = &p.fs.flow_mask.dst_ip; 247998943Sluigi break; 248098943Sluigi 248198943Sluigi case TOK_SRCIP: 2482117469Sluigi p32 = &p.fs.flow_mask.src_ip; 248398943Sluigi break; 248498943Sluigi 248598943Sluigi case TOK_DSTPORT: 2486117469Sluigi p16 = &p.fs.flow_mask.dst_port; 248798943Sluigi break; 248898943Sluigi 248998943Sluigi case TOK_SRCPORT: 2490117469Sluigi p16 = &p.fs.flow_mask.src_port; 249198943Sluigi break; 249298943Sluigi 249398943Sluigi case TOK_PROTO: 249498943Sluigi break; 249598943Sluigi 249698943Sluigi default: 249798943Sluigi ac++; av--; /* backtrack */ 249898943Sluigi goto end_mask; 249998943Sluigi } 250098943Sluigi if (ac < 1) 250198943Sluigi errx(EX_USAGE, "mask: value missing"); 250298943Sluigi if (*av[0] == '/') { 250398943Sluigi a = strtoul(av[0]+1, &end, 0); 250498943Sluigi a = (a == 32) ? ~0 : (1 << a) - 1; 2505106505Smaxim } else 250699909Sluigi a = strtoul(av[0], &end, 0); 250798943Sluigi if (p32 != NULL) 250898943Sluigi *p32 = a; 250998943Sluigi else if (p16 != NULL) { 251098943Sluigi if (a > 65535) 251198943Sluigi errx(EX_DATAERR, 251298943Sluigi "mask: must be 16 bit"); 2513117328Sluigi *p16 = (uint16_t)a; 251498943Sluigi } else { 251598943Sluigi if (a > 255) 251698943Sluigi errx(EX_DATAERR, 251798943Sluigi "mask: must be 8 bit"); 2518117469Sluigi p.fs.flow_mask.proto = (uint8_t)a; 251998943Sluigi } 252098943Sluigi if (a != 0) 2521117469Sluigi p.fs.flags_fs |= DN_HAVE_FLOW_MASK; 252298943Sluigi ac--; av++; 252398943Sluigi } /* end while, config masks */ 252498943Sluigiend_mask: 252598943Sluigi break; 252698943Sluigi 252798943Sluigi case TOK_RED: 252898943Sluigi case TOK_GRED: 252998943Sluigi NEED1("red/gred needs w_q/min_th/max_th/max_p\n"); 2530117469Sluigi p.fs.flags_fs |= DN_IS_RED; 253198943Sluigi if (tok == TOK_GRED) 2532117469Sluigi p.fs.flags_fs |= DN_IS_GENTLE_RED; 253398943Sluigi /* 253498943Sluigi * the format for parameters is w_q/min_th/max_th/max_p 253598943Sluigi */ 253698943Sluigi if ((end = strsep(&av[0], "/"))) { 253798943Sluigi double w_q = strtod(end, NULL); 253898943Sluigi if (w_q > 1 || w_q <= 0) 253998943Sluigi errx(EX_DATAERR, "0 < w_q <= 1"); 2540117469Sluigi p.fs.w_q = (int) (w_q * (1 << SCALE_RED)); 254198943Sluigi } 254298943Sluigi if ((end = strsep(&av[0], "/"))) { 2543117469Sluigi p.fs.min_th = strtoul(end, &end, 0); 254498943Sluigi if (*end == 'K' || *end == 'k') 2545117469Sluigi p.fs.min_th *= 1024; 254698943Sluigi } 254798943Sluigi if ((end = strsep(&av[0], "/"))) { 2548117469Sluigi p.fs.max_th = strtoul(end, &end, 0); 254998943Sluigi if (*end == 'K' || *end == 'k') 2550117469Sluigi p.fs.max_th *= 1024; 255198943Sluigi } 255298943Sluigi if ((end = strsep(&av[0], "/"))) { 255398943Sluigi double max_p = strtod(end, NULL); 255498943Sluigi if (max_p > 1 || max_p <= 0) 255598943Sluigi errx(EX_DATAERR, "0 < max_p <= 1"); 2556117469Sluigi p.fs.max_p = (int)(max_p * (1 << SCALE_RED)); 255798943Sluigi } 255898943Sluigi ac--; av++; 255998943Sluigi break; 256098943Sluigi 256198943Sluigi case TOK_DROPTAIL: 2562117469Sluigi p.fs.flags_fs &= ~(DN_IS_RED|DN_IS_GENTLE_RED); 256398943Sluigi break; 2564106505Smaxim 256598943Sluigi case TOK_BW: 256698943Sluigi NEED1("bw needs bandwidth or interface\n"); 256798943Sluigi if (do_pipe != 1) 256898943Sluigi errx(EX_DATAERR, "bandwidth only valid for pipes"); 256998943Sluigi /* 257098943Sluigi * set clocking interface or bandwidth value 257198943Sluigi */ 257298943Sluigi if (av[0][0] >= 'a' && av[0][0] <= 'z') { 2573117469Sluigi int l = sizeof(p.if_name)-1; 257498943Sluigi /* interface name */ 2575117469Sluigi strncpy(p.if_name, av[0], l); 2576117469Sluigi p.if_name[l] = '\0'; 2577117469Sluigi p.bandwidth = 0; 257898943Sluigi } else { 2579117469Sluigi p.if_name[0] = '\0'; 2580117469Sluigi p.bandwidth = strtoul(av[0], &end, 0); 258198943Sluigi if (*end == 'K' || *end == 'k') { 258298943Sluigi end++; 2583117469Sluigi p.bandwidth *= 1000; 258498943Sluigi } else if (*end == 'M') { 258598943Sluigi end++; 2586117469Sluigi p.bandwidth *= 1000000; 258798943Sluigi } 258898943Sluigi if (*end == 'B' || !strncmp(end, "by", 2)) 2589117469Sluigi p.bandwidth *= 8; 2590117469Sluigi if (p.bandwidth < 0) 259198943Sluigi errx(EX_DATAERR, "bandwidth too large"); 259298943Sluigi } 259398943Sluigi ac--; av++; 259498943Sluigi break; 259598943Sluigi 259698943Sluigi case TOK_DELAY: 259798943Sluigi if (do_pipe != 1) 259898943Sluigi errx(EX_DATAERR, "delay only valid for pipes"); 259998943Sluigi NEED1("delay needs argument 0..10000ms\n"); 2600117469Sluigi p.delay = strtoul(av[0], NULL, 0); 260198943Sluigi ac--; av++; 260298943Sluigi break; 260398943Sluigi 260498943Sluigi case TOK_WEIGHT: 260598943Sluigi if (do_pipe == 1) 260698943Sluigi errx(EX_DATAERR,"weight only valid for queues"); 260798943Sluigi NEED1("weight needs argument 0..100\n"); 2608117469Sluigi p.fs.weight = strtoul(av[0], &end, 0); 260998943Sluigi ac--; av++; 261098943Sluigi break; 261198943Sluigi 261298943Sluigi case TOK_PIPE: 261398943Sluigi if (do_pipe == 1) 261498943Sluigi errx(EX_DATAERR,"pipe only valid for queues"); 261598943Sluigi NEED1("pipe needs pipe_number\n"); 2616117469Sluigi p.fs.parent_nr = strtoul(av[0], &end, 0); 261798943Sluigi ac--; av++; 261898943Sluigi break; 261998943Sluigi 262098943Sluigi default: 2621124924Smaxim errx(EX_DATAERR, "unrecognised option ``%s''", av[-1]); 262298943Sluigi } 262398943Sluigi } 262498943Sluigi if (do_pipe == 1) { 2625117469Sluigi if (p.pipe_nr == 0) 262698943Sluigi errx(EX_DATAERR, "pipe_nr must be > 0"); 2627117469Sluigi if (p.delay > 10000) 262898943Sluigi errx(EX_DATAERR, "delay must be < 10000"); 262998943Sluigi } else { /* do_pipe == 2, queue */ 2630117469Sluigi if (p.fs.parent_nr == 0) 263198943Sluigi errx(EX_DATAERR, "pipe must be > 0"); 2632117469Sluigi if (p.fs.weight >100) 263398943Sluigi errx(EX_DATAERR, "weight must be <= 100"); 263498943Sluigi } 2635117469Sluigi if (p.fs.flags_fs & DN_QSIZE_IS_BYTES) { 2636117469Sluigi if (p.fs.qsize > 1024*1024) 263798943Sluigi errx(EX_DATAERR, "queue size must be < 1MB"); 263898943Sluigi } else { 2639117469Sluigi if (p.fs.qsize > 100) 264098943Sluigi errx(EX_DATAERR, "2 <= queue size <= 100"); 264198943Sluigi } 2642117469Sluigi if (p.fs.flags_fs & DN_IS_RED) { 264398943Sluigi size_t len; 264498943Sluigi int lookup_depth, avg_pkt_size; 264598943Sluigi double s, idle, weight, w_q; 2646117469Sluigi struct clockinfo ck; 264798943Sluigi int t; 264898943Sluigi 2649117469Sluigi if (p.fs.min_th >= p.fs.max_th) 265098943Sluigi errx(EX_DATAERR, "min_th %d must be < than max_th %d", 2651117469Sluigi p.fs.min_th, p.fs.max_th); 2652117469Sluigi if (p.fs.max_th == 0) 265398943Sluigi errx(EX_DATAERR, "max_th must be > 0"); 265498943Sluigi 265598943Sluigi len = sizeof(int); 265698943Sluigi if (sysctlbyname("net.inet.ip.dummynet.red_lookup_depth", 265798943Sluigi &lookup_depth, &len, NULL, 0) == -1) 265898943Sluigi 265998943Sluigi errx(1, "sysctlbyname(\"%s\")", 266098943Sluigi "net.inet.ip.dummynet.red_lookup_depth"); 266198943Sluigi if (lookup_depth == 0) 266298943Sluigi errx(EX_DATAERR, "net.inet.ip.dummynet.red_lookup_depth" 266398943Sluigi " must be greater than zero"); 266498943Sluigi 266598943Sluigi len = sizeof(int); 266698943Sluigi if (sysctlbyname("net.inet.ip.dummynet.red_avg_pkt_size", 266798943Sluigi &avg_pkt_size, &len, NULL, 0) == -1) 266898943Sluigi 266998943Sluigi errx(1, "sysctlbyname(\"%s\")", 267098943Sluigi "net.inet.ip.dummynet.red_avg_pkt_size"); 267198943Sluigi if (avg_pkt_size == 0) 267298943Sluigi errx(EX_DATAERR, 267398943Sluigi "net.inet.ip.dummynet.red_avg_pkt_size must" 267498943Sluigi " be greater than zero"); 267598943Sluigi 267698943Sluigi len = sizeof(struct clockinfo); 2677117469Sluigi if (sysctlbyname("kern.clockrate", &ck, &len, NULL, 0) == -1) 267898943Sluigi errx(1, "sysctlbyname(\"%s\")", "kern.clockrate"); 267998943Sluigi 268098943Sluigi /* 268198943Sluigi * Ticks needed for sending a medium-sized packet. 268298943Sluigi * Unfortunately, when we are configuring a WF2Q+ queue, we 268398943Sluigi * do not have bandwidth information, because that is stored 268498943Sluigi * in the parent pipe, and also we have multiple queues 268598943Sluigi * competing for it. So we set s=0, which is not very 268698943Sluigi * correct. But on the other hand, why do we want RED with 268798943Sluigi * WF2Q+ ? 268898943Sluigi */ 2689117469Sluigi if (p.bandwidth==0) /* this is a WF2Q+ queue */ 269098943Sluigi s = 0; 269198943Sluigi else 2692117469Sluigi s = ck.hz * avg_pkt_size * 8 / p.bandwidth; 269398943Sluigi 269498943Sluigi /* 269598943Sluigi * max idle time (in ticks) before avg queue size becomes 0. 269698943Sluigi * NOTA: (3/w_q) is approx the value x so that 269798943Sluigi * (1-w_q)^x < 10^-3. 269898943Sluigi */ 2699117469Sluigi w_q = ((double)p.fs.w_q) / (1 << SCALE_RED); 270098943Sluigi idle = s * 3. / w_q; 2701117469Sluigi p.fs.lookup_step = (int)idle / lookup_depth; 2702117469Sluigi if (!p.fs.lookup_step) 2703117469Sluigi p.fs.lookup_step = 1; 270498943Sluigi weight = 1 - w_q; 2705117469Sluigi for (t = p.fs.lookup_step; t > 0; --t) 270698943Sluigi weight *= weight; 2707117469Sluigi p.fs.lookup_weight = (int)(weight * (1 << SCALE_RED)); 270898943Sluigi } 2709117469Sluigi i = do_cmd(IP_DUMMYNET_CONFIGURE, &p, sizeof p); 271098943Sluigi if (i) 271198943Sluigi err(1, "setsockopt(%s)", "IP_DUMMYNET_CONFIGURE"); 271298943Sluigi} 271398943Sluigi 271498943Sluigistatic void 2715117577Sluigiget_mac_addr_mask(char *p, uint8_t *addr, uint8_t *mask) 271698943Sluigi{ 271798943Sluigi int i, l; 271898943Sluigi 271998943Sluigi for (i=0; i<6; i++) 272098943Sluigi addr[i] = mask[i] = 0; 272198943Sluigi if (!strcmp(p, "any")) 272298943Sluigi return; 272398943Sluigi 272498943Sluigi for (i=0; *p && i<6;i++, p++) { 272598943Sluigi addr[i] = strtol(p, &p, 16); 272698943Sluigi if (*p != ':') /* we start with the mask */ 272798943Sluigi break; 272898943Sluigi } 272998943Sluigi if (*p == '/') { /* mask len */ 273098943Sluigi l = strtol(p+1, &p, 0); 273198943Sluigi for (i=0; l>0; l -=8, i++) 273298943Sluigi mask[i] = (l >=8) ? 0xff : (~0) << (8-l); 273398943Sluigi } else if (*p == '&') { /* mask */ 273498943Sluigi for (i=0, p++; *p && i<6;i++, p++) { 273598943Sluigi mask[i] = strtol(p, &p, 16); 273698943Sluigi if (*p != ':') 273798943Sluigi break; 273898943Sluigi } 273998943Sluigi } else if (*p == '\0') { 274098943Sluigi for (i=0; i<6; i++) 274198943Sluigi mask[i] = 0xff; 274298943Sluigi } 274398943Sluigi for (i=0; i<6; i++) 274498943Sluigi addr[i] &= mask[i]; 274598943Sluigi} 274698943Sluigi 274798943Sluigi/* 274898943Sluigi * helper function, updates the pointer to cmd with the length 274998943Sluigi * of the current command, and also cleans up the first word of 275098943Sluigi * the new command in case it has been clobbered before. 275198943Sluigi */ 275298943Sluigistatic ipfw_insn * 275398943Sluiginext_cmd(ipfw_insn *cmd) 275498943Sluigi{ 275598943Sluigi cmd += F_LEN(cmd); 275698943Sluigi bzero(cmd, sizeof(*cmd)); 275798943Sluigi return cmd; 275898943Sluigi} 275998943Sluigi 276098943Sluigi/* 2761117469Sluigi * Takes arguments and copies them into a comment 2762117469Sluigi */ 2763117469Sluigistatic void 2764117469Sluigifill_comment(ipfw_insn *cmd, int ac, char **av) 2765117469Sluigi{ 2766117469Sluigi int i, l; 2767117469Sluigi char *p = (char *)(cmd + 1); 2768117577Sluigi 2769117469Sluigi cmd->opcode = O_NOP; 2770117469Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)); 2771117469Sluigi 2772117469Sluigi /* Compute length of comment string. */ 2773117469Sluigi for (i = 0, l = 0; i < ac; i++) 2774117469Sluigi l += strlen(av[i]) + 1; 2775117469Sluigi if (l == 0) 2776117469Sluigi return; 2777117469Sluigi if (l > 84) 2778117469Sluigi errx(EX_DATAERR, 2779117469Sluigi "comment too long (max 80 chars)"); 2780117469Sluigi l = 1 + (l+3)/4; 2781117469Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | l; 2782117469Sluigi for (i = 0; i < ac; i++) { 2783117469Sluigi strcpy(p, av[i]); 2784117469Sluigi p += strlen(av[i]); 2785117469Sluigi *p++ = ' '; 2786117469Sluigi } 2787117469Sluigi *(--p) = '\0'; 2788117469Sluigi} 2789117577Sluigi 2790117469Sluigi/* 279198943Sluigi * A function to fill simple commands of size 1. 279298943Sluigi * Existing flags are preserved. 279398943Sluigi */ 279498943Sluigistatic void 2795117328Sluigifill_cmd(ipfw_insn *cmd, enum ipfw_opcodes opcode, int flags, uint16_t arg) 279698943Sluigi{ 279798943Sluigi cmd->opcode = opcode; 279898943Sluigi cmd->len = ((cmd->len | flags) & (F_NOT | F_OR)) | 1; 279998943Sluigi cmd->arg1 = arg; 280098943Sluigi} 280198943Sluigi 280298943Sluigi/* 280398943Sluigi * Fetch and add the MAC address and type, with masks. This generates one or 280498943Sluigi * two microinstructions, and returns the pointer to the last one. 280598943Sluigi */ 280698943Sluigistatic ipfw_insn * 280798943Sluigiadd_mac(ipfw_insn *cmd, int ac, char *av[]) 280898943Sluigi{ 2809102087Sluigi ipfw_insn_mac *mac; 281098943Sluigi 2811102087Sluigi if (ac < 2) 2812102098Sluigi errx(EX_DATAERR, "MAC dst src"); 281398943Sluigi 281498943Sluigi cmd->opcode = O_MACADDR2; 281598943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | F_INSN_SIZE(ipfw_insn_mac); 281698943Sluigi 281798943Sluigi mac = (ipfw_insn_mac *)cmd; 2818101978Sluigi get_mac_addr_mask(av[0], mac->addr, mac->mask); /* dst */ 281998943Sluigi get_mac_addr_mask(av[1], &(mac->addr[6]), &(mac->mask[6])); /* src */ 2820102087Sluigi return cmd; 2821102087Sluigi} 282298943Sluigi 2823102087Sluigistatic ipfw_insn * 2824102087Sluigiadd_mactype(ipfw_insn *cmd, int ac, char *av) 2825102087Sluigi{ 2826102087Sluigi if (ac < 1) 2827102087Sluigi errx(EX_DATAERR, "missing MAC type"); 2828102087Sluigi if (strcmp(av, "any") != 0) { /* we have a non-null type */ 2829102087Sluigi fill_newports((ipfw_insn_u16 *)cmd, av, IPPROTO_ETHERTYPE); 283098943Sluigi cmd->opcode = O_MAC_TYPE; 2831102087Sluigi return cmd; 2832102087Sluigi } else 2833102087Sluigi return NULL; 2834102087Sluigi} 283598943Sluigi 2836102087Sluigistatic ipfw_insn * 2837102087Sluigiadd_proto(ipfw_insn *cmd, char *av) 2838102087Sluigi{ 2839102087Sluigi struct protoent *pe; 2840102087Sluigi u_char proto = 0; 2841102087Sluigi 2842102087Sluigi if (!strncmp(av, "all", strlen(av))) 2843102087Sluigi ; /* same as "ip" */ 2844102087Sluigi else if ((proto = atoi(av)) > 0) 2845102087Sluigi ; /* all done! */ 2846102087Sluigi else if ((pe = getprotobyname(av)) != NULL) 2847102087Sluigi proto = pe->p_proto; 2848102087Sluigi else 2849102098Sluigi return NULL; 2850102087Sluigi if (proto != IPPROTO_IP) 2851102087Sluigi fill_cmd(cmd, O_PROTO, 0, proto); 285298943Sluigi return cmd; 285398943Sluigi} 285498943Sluigi 2855102087Sluigistatic ipfw_insn * 2856102087Sluigiadd_srcip(ipfw_insn *cmd, char *av) 2857102087Sluigi{ 2858102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2859102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2860102087Sluigi cmd->opcode = O_IP_SRC_SET; 2861130281Sru else if (cmd->opcode == O_IP_DST_LOOKUP) /* table */ 2862130281Sru cmd->opcode = O_IP_SRC_LOOKUP; 2863102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2864102087Sluigi cmd->opcode = O_IP_SRC_ME; 2865102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2866102087Sluigi cmd->opcode = O_IP_SRC; 2867117328Sluigi else /* addr/mask */ 2868102087Sluigi cmd->opcode = O_IP_SRC_MASK; 2869102087Sluigi return cmd; 2870102087Sluigi} 2871102087Sluigi 2872102087Sluigistatic ipfw_insn * 2873102087Sluigiadd_dstip(ipfw_insn *cmd, char *av) 2874102087Sluigi{ 2875102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2876102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2877102087Sluigi ; 2878130281Sru else if (cmd->opcode == O_IP_DST_LOOKUP) /* table */ 2879130281Sru ; 2880102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2881102087Sluigi cmd->opcode = O_IP_DST_ME; 2882102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2883102087Sluigi cmd->opcode = O_IP_DST; 2884117328Sluigi else /* addr/mask */ 2885102087Sluigi cmd->opcode = O_IP_DST_MASK; 2886102087Sluigi return cmd; 2887102087Sluigi} 2888102087Sluigi 2889102087Sluigistatic ipfw_insn * 2890102087Sluigiadd_ports(ipfw_insn *cmd, char *av, u_char proto, int opcode) 2891102087Sluigi{ 2892102087Sluigi if (!strncmp(av, "any", strlen(av))) { 2893102087Sluigi return NULL; 2894102087Sluigi } else if (fill_newports((ipfw_insn_u16 *)cmd, av, proto)) { 2895102087Sluigi /* XXX todo: check that we have a protocol with ports */ 2896102087Sluigi cmd->opcode = opcode; 2897102087Sluigi return cmd; 2898102087Sluigi } 2899102087Sluigi return NULL; 2900102087Sluigi} 2901102087Sluigi 290298943Sluigi/* 290398943Sluigi * Parse arguments and assemble the microinstructions which make up a rule. 290498943Sluigi * Rules are added into the 'rulebuf' and then copied in the correct order 290598943Sluigi * into the actual rule. 290698943Sluigi * 2907136071Sgreen * The syntax for a rule starts with the action, followed by 2908136071Sgreen * optional action parameters, and the various match patterns. 2909108533Sschweikh * In the assembled microcode, the first opcode must be an O_PROBE_STATE 291098943Sluigi * (generated if the rule includes a keep-state option), then the 2911136071Sgreen * various match patterns, log/altq actions, and the actual action. 2912106505Smaxim * 291398943Sluigi */ 291498943Sluigistatic void 291598943Sluigiadd(int ac, char *av[]) 291698943Sluigi{ 291798943Sluigi /* 291898943Sluigi * rules are added into the 'rulebuf' and then copied in 291998943Sluigi * the correct order into the actual rule. 292098943Sluigi * Some things that need to go out of order (prob, action etc.) 292198943Sluigi * go into actbuf[]. 292298943Sluigi */ 2923117328Sluigi static uint32_t rulebuf[255], actbuf[255], cmdbuf[255]; 292498943Sluigi 2925117469Sluigi ipfw_insn *src, *dst, *cmd, *action, *prev=NULL; 2926102087Sluigi ipfw_insn *first_cmd; /* first match pattern */ 292798943Sluigi 292898943Sluigi struct ip_fw *rule; 292998943Sluigi 293098943Sluigi /* 293198943Sluigi * various flags used to record that we entered some fields. 293298943Sluigi */ 2933101116Sluigi ipfw_insn *have_state = NULL; /* check-state or keep-state */ 2934136071Sgreen ipfw_insn *have_log = NULL, *have_altq = NULL; 2935134475Smaxim size_t len; 293698943Sluigi 293798943Sluigi int i; 293898943Sluigi 293998943Sluigi int open_par = 0; /* open parenthesis ( */ 294098943Sluigi 294198943Sluigi /* proto is here because it is used to fetch ports */ 294298943Sluigi u_char proto = IPPROTO_IP; /* default protocol */ 294398943Sluigi 2944107289Sluigi double match_prob = 1; /* match probability, default is always match */ 2945107289Sluigi 294698943Sluigi bzero(actbuf, sizeof(actbuf)); /* actions go here */ 294798943Sluigi bzero(cmdbuf, sizeof(cmdbuf)); 294898943Sluigi bzero(rulebuf, sizeof(rulebuf)); 294998943Sluigi 295098943Sluigi rule = (struct ip_fw *)rulebuf; 295198943Sluigi cmd = (ipfw_insn *)cmdbuf; 295298943Sluigi action = (ipfw_insn *)actbuf; 295398943Sluigi 295498943Sluigi av++; ac--; 295598943Sluigi 295698943Sluigi /* [rule N] -- Rule number optional */ 295798943Sluigi if (ac && isdigit(**av)) { 295898943Sluigi rule->rulenum = atoi(*av); 295998943Sluigi av++; 296098943Sluigi ac--; 296198943Sluigi } 296298943Sluigi 2963117655Sluigi /* [set N] -- set number (0..RESVD_SET), optional */ 2964101628Sluigi if (ac > 1 && !strncmp(*av, "set", strlen(*av))) { 2965101628Sluigi int set = strtoul(av[1], NULL, 10); 2966117655Sluigi if (set < 0 || set > RESVD_SET) 2967101628Sluigi errx(EX_DATAERR, "illegal set %s", av[1]); 2968101628Sluigi rule->set = set; 2969101628Sluigi av += 2; ac -= 2; 2970101628Sluigi } 2971101628Sluigi 297298943Sluigi /* [prob D] -- match probability, optional */ 297398943Sluigi if (ac > 1 && !strncmp(*av, "prob", strlen(*av))) { 2974107289Sluigi match_prob = strtod(av[1], NULL); 297598943Sluigi 2976107289Sluigi if (match_prob <= 0 || match_prob > 1) 297798943Sluigi errx(EX_DATAERR, "illegal match prob. %s", av[1]); 297898943Sluigi av += 2; ac -= 2; 297998943Sluigi } 298098943Sluigi 298198943Sluigi /* action -- mandatory */ 298298943Sluigi NEED1("missing action"); 298398943Sluigi i = match_token(rule_actions, *av); 298498943Sluigi ac--; av++; 298598943Sluigi action->len = 1; /* default */ 298698943Sluigi switch(i) { 298798943Sluigi case TOK_CHECKSTATE: 2988101116Sluigi have_state = action; 298998943Sluigi action->opcode = O_CHECK_STATE; 299098943Sluigi break; 299198943Sluigi 299298943Sluigi case TOK_ACCEPT: 299398943Sluigi action->opcode = O_ACCEPT; 299498943Sluigi break; 299598943Sluigi 299698943Sluigi case TOK_DENY: 299798943Sluigi action->opcode = O_DENY; 299899475Sluigi action->arg1 = 0; 299998943Sluigi break; 300098943Sluigi 300199475Sluigi case TOK_REJECT: 300299475Sluigi action->opcode = O_REJECT; 300399475Sluigi action->arg1 = ICMP_UNREACH_HOST; 300499475Sluigi break; 300599475Sluigi 300699475Sluigi case TOK_RESET: 300799475Sluigi action->opcode = O_REJECT; 300899475Sluigi action->arg1 = ICMP_REJECT_RST; 300999475Sluigi break; 301099475Sluigi 301199475Sluigi case TOK_UNREACH: 301299475Sluigi action->opcode = O_REJECT; 301399475Sluigi NEED1("missing reject code"); 301499475Sluigi fill_reject_code(&action->arg1, *av); 301599475Sluigi ac--; av++; 301699475Sluigi break; 301799475Sluigi 301898943Sluigi case TOK_COUNT: 301998943Sluigi action->opcode = O_COUNT; 302098943Sluigi break; 302198943Sluigi 302298943Sluigi case TOK_QUEUE: 302398943Sluigi case TOK_PIPE: 302498943Sluigi action->len = F_INSN_SIZE(ipfw_insn_pipe); 302598943Sluigi case TOK_SKIPTO: 302698943Sluigi if (i == TOK_QUEUE) 302798943Sluigi action->opcode = O_QUEUE; 302898943Sluigi else if (i == TOK_PIPE) 302998943Sluigi action->opcode = O_PIPE; 303098943Sluigi else if (i == TOK_SKIPTO) 303198943Sluigi action->opcode = O_SKIPTO; 303298943Sluigi NEED1("missing skipto/pipe/queue number"); 303398943Sluigi action->arg1 = strtoul(*av, NULL, 10); 303498943Sluigi av++; ac--; 303598943Sluigi break; 303698943Sluigi 303798943Sluigi case TOK_DIVERT: 303898943Sluigi case TOK_TEE: 303998943Sluigi action->opcode = (i == TOK_DIVERT) ? O_DIVERT : O_TEE; 304098943Sluigi NEED1("missing divert/tee port"); 304198943Sluigi action->arg1 = strtoul(*av, NULL, 0); 304298943Sluigi if (action->arg1 == 0) { 304398943Sluigi struct servent *s; 304498943Sluigi setservent(1); 304598943Sluigi s = getservbyname(av[0], "divert"); 304698943Sluigi if (s != NULL) 304798943Sluigi action->arg1 = ntohs(s->s_port); 304898943Sluigi else 304998943Sluigi errx(EX_DATAERR, "illegal divert/tee port"); 305098943Sluigi } 305198943Sluigi ac--; av++; 305298943Sluigi break; 305398943Sluigi 305498943Sluigi case TOK_FORWARD: { 305598943Sluigi ipfw_insn_sa *p = (ipfw_insn_sa *)action; 305698943Sluigi char *s, *end; 305798943Sluigi 305898943Sluigi NEED1("missing forward address[:port]"); 305998943Sluigi 306098943Sluigi action->opcode = O_FORWARD_IP; 306198943Sluigi action->len = F_INSN_SIZE(ipfw_insn_sa); 306298943Sluigi 306398943Sluigi p->sa.sin_len = sizeof(struct sockaddr_in); 306498943Sluigi p->sa.sin_family = AF_INET; 306598943Sluigi p->sa.sin_port = 0; 306698943Sluigi /* 306798943Sluigi * locate the address-port separator (':' or ',') 306898943Sluigi */ 306998943Sluigi s = strchr(*av, ':'); 307098943Sluigi if (s == NULL) 307198943Sluigi s = strchr(*av, ','); 307298943Sluigi if (s != NULL) { 307398943Sluigi *(s++) = '\0'; 307498943Sluigi i = strtoport(s, &end, 0 /* base */, 0 /* proto */); 307598943Sluigi if (s == end) 307698943Sluigi errx(EX_DATAERR, 307798943Sluigi "illegal forwarding port ``%s''", s); 3078103241Sluigi p->sa.sin_port = (u_short)i; 307998943Sluigi } 308098943Sluigi lookup_host(*av, &(p->sa.sin_addr)); 308198943Sluigi } 308298943Sluigi ac--; av++; 308398943Sluigi break; 308498943Sluigi 3085117469Sluigi case TOK_COMMENT: 3086117469Sluigi /* pretend it is a 'count' rule followed by the comment */ 3087117469Sluigi action->opcode = O_COUNT; 3088117469Sluigi ac++; av--; /* go back... */ 3089117469Sluigi break; 3090117469Sluigi 309198943Sluigi default: 3092102087Sluigi errx(EX_DATAERR, "invalid action %s\n", av[-1]); 309398943Sluigi } 309498943Sluigi action = next_cmd(action); 309598943Sluigi 309698943Sluigi /* 3097136071Sgreen * [altq queuename] -- altq tag, optional 309898943Sluigi * [log [logamount N]] -- log, optional 309998943Sluigi * 3100136071Sgreen * If they exist, it go first in the cmdbuf, but then it is 310198943Sluigi * skipped in the copy section to the end of the buffer. 310298943Sluigi */ 3103136071Sgreen while (ac != 0 && (i = match_token(rule_action_params, *av)) != -1) { 3104136071Sgreen ac--; av++; 3105136071Sgreen switch (i) { 3106136071Sgreen case TOK_LOG: 3107136071Sgreen { 3108136071Sgreen ipfw_insn_log *c = (ipfw_insn_log *)cmd; 3109136071Sgreen int l; 311098943Sluigi 3111136071Sgreen if (have_log) 3112136071Sgreen errx(EX_DATAERR, 3113136071Sgreen "log cannot be specified more than once"); 3114136071Sgreen have_log = (ipfw_insn *)c; 3115136071Sgreen cmd->len = F_INSN_SIZE(ipfw_insn_log); 3116136071Sgreen cmd->opcode = O_LOG; 3117136071Sgreen if (ac && !strncmp(*av, "logamount", strlen(*av))) { 3118136071Sgreen ac--; av++; 3119136071Sgreen NEED1("logamount requires argument"); 3120136071Sgreen l = atoi(*av); 3121136071Sgreen if (l < 0) 3122136071Sgreen errx(EX_DATAERR, 3123136071Sgreen "logamount must be positive"); 3124136071Sgreen c->max_log = l; 3125136071Sgreen ac--; av++; 3126136071Sgreen } else { 3127136071Sgreen len = sizeof(c->max_log); 3128136071Sgreen if (sysctlbyname("net.inet.ip.fw.verbose_limit", 3129136071Sgreen &c->max_log, &len, NULL, 0) == -1) 3130136071Sgreen errx(1, "sysctlbyname(\"%s\")", 3131136071Sgreen "net.inet.ip.fw.verbose_limit"); 3132136071Sgreen } 3133136071Sgreen } 3134136071Sgreen break; 3135136071Sgreen 3136136071Sgreen case TOK_ALTQ: 3137136071Sgreen { 3138136071Sgreen ipfw_insn_altq *a = (ipfw_insn_altq *)cmd; 3139136071Sgreen 3140136071Sgreen NEED1("missing altq queue name"); 3141136071Sgreen if (have_altq) 3142136071Sgreen errx(EX_DATAERR, 3143136071Sgreen "altq cannot be specified more than once"); 3144136071Sgreen have_altq = (ipfw_insn *)a; 3145136071Sgreen cmd->len = F_INSN_SIZE(ipfw_insn_altq); 3146136071Sgreen cmd->opcode = O_ALTQ; 3147136071Sgreen fill_altq_qid(&a->qid, *av); 314898943Sluigi ac--; av++; 3149136071Sgreen } 3150136071Sgreen break; 3151136071Sgreen 3152136071Sgreen default: 3153136071Sgreen abort(); 315498943Sluigi } 315598943Sluigi cmd = next_cmd(cmd); 315698943Sluigi } 315798943Sluigi 3158101116Sluigi if (have_state) /* must be a check-state, we are done */ 315998943Sluigi goto done; 316098943Sluigi 316198943Sluigi#define OR_START(target) \ 316298943Sluigi if (ac && (*av[0] == '(' || *av[0] == '{')) { \ 316398943Sluigi if (open_par) \ 316498943Sluigi errx(EX_USAGE, "nested \"(\" not allowed\n"); \ 3165101641Sluigi prev = NULL; \ 316698943Sluigi open_par = 1; \ 316798943Sluigi if ( (av[0])[1] == '\0') { \ 316898943Sluigi ac--; av++; \ 316998943Sluigi } else \ 317098943Sluigi (*av)++; \ 317198943Sluigi } \ 317298943Sluigi target: \ 317398943Sluigi 317498943Sluigi 317598943Sluigi#define CLOSE_PAR \ 317698943Sluigi if (open_par) { \ 317798943Sluigi if (ac && ( \ 317898943Sluigi !strncmp(*av, ")", strlen(*av)) || \ 317998943Sluigi !strncmp(*av, "}", strlen(*av)) )) { \ 3180101641Sluigi prev = NULL; \ 318198943Sluigi open_par = 0; \ 318298943Sluigi ac--; av++; \ 318398943Sluigi } else \ 318498943Sluigi errx(EX_USAGE, "missing \")\"\n"); \ 318598943Sluigi } 3186106505Smaxim 318798943Sluigi#define NOT_BLOCK \ 318898943Sluigi if (ac && !strncmp(*av, "not", strlen(*av))) { \ 318998943Sluigi if (cmd->len & F_NOT) \ 319098943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); \ 319198943Sluigi cmd->len |= F_NOT; \ 319298943Sluigi ac--; av++; \ 319398943Sluigi } 319498943Sluigi 319598943Sluigi#define OR_BLOCK(target) \ 319698943Sluigi if (ac && !strncmp(*av, "or", strlen(*av))) { \ 319798943Sluigi if (prev == NULL || open_par == 0) \ 319898943Sluigi errx(EX_DATAERR, "invalid OR block"); \ 319998943Sluigi prev->len |= F_OR; \ 320098943Sluigi ac--; av++; \ 320198943Sluigi goto target; \ 320298943Sluigi } \ 320398943Sluigi CLOSE_PAR; 320498943Sluigi 3205102087Sluigi first_cmd = cmd; 3206102098Sluigi 3207102098Sluigi#if 0 320898943Sluigi /* 3209102087Sluigi * MAC addresses, optional. 3210102087Sluigi * If we have this, we skip the part "proto from src to dst" 3211102087Sluigi * and jump straight to the option parsing. 3212102087Sluigi */ 3213102087Sluigi NOT_BLOCK; 3214102087Sluigi NEED1("missing protocol"); 3215102087Sluigi if (!strncmp(*av, "MAC", strlen(*av)) || 3216102087Sluigi !strncmp(*av, "mac", strlen(*av))) { 3217102087Sluigi ac--; av++; /* the "MAC" keyword */ 3218102087Sluigi add_mac(cmd, ac, av); /* exits in case of errors */ 3219102087Sluigi cmd = next_cmd(cmd); 3220102087Sluigi ac -= 2; av += 2; /* dst-mac and src-mac */ 3221102087Sluigi NOT_BLOCK; 3222102087Sluigi NEED1("missing mac type"); 3223102087Sluigi if (add_mactype(cmd, ac, av[0])) 3224102087Sluigi cmd = next_cmd(cmd); 3225102087Sluigi ac--; av++; /* any or mac-type */ 3226102087Sluigi goto read_options; 3227102087Sluigi } 3228102098Sluigi#endif 3229102087Sluigi 3230102087Sluigi /* 323198943Sluigi * protocol, mandatory 323298943Sluigi */ 323398943Sluigi OR_START(get_proto); 323498943Sluigi NOT_BLOCK; 323598943Sluigi NEED1("missing protocol"); 3236102087Sluigi if (add_proto(cmd, *av)) { 3237102087Sluigi av++; ac--; 3238102087Sluigi if (F_LEN(cmd) == 0) /* plain IP */ 3239102087Sluigi proto = 0; 3240102087Sluigi else { 3241102087Sluigi proto = cmd->arg1; 3242102087Sluigi prev = cmd; 3243102087Sluigi cmd = next_cmd(cmd); 3244102087Sluigi } 3245102098Sluigi } else if (first_cmd != cmd) { 3246116438Smaxim errx(EX_DATAERR, "invalid protocol ``%s''", *av); 3247102098Sluigi } else 3248102098Sluigi goto read_options; 324998943Sluigi OR_BLOCK(get_proto); 325098943Sluigi 325198943Sluigi /* 3252102087Sluigi * "from", mandatory 325398943Sluigi */ 3254102087Sluigi if (!ac || strncmp(*av, "from", strlen(*av))) 325598943Sluigi errx(EX_USAGE, "missing ``from''"); 325698943Sluigi ac--; av++; 325798943Sluigi 325898943Sluigi /* 325998943Sluigi * source IP, mandatory 326098943Sluigi */ 326198943Sluigi OR_START(source_ip); 326298943Sluigi NOT_BLOCK; /* optional "not" */ 326398943Sluigi NEED1("missing source address"); 3264102087Sluigi if (add_srcip(cmd, *av)) { 3265102087Sluigi ac--; av++; 3266102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 3267102087Sluigi prev = cmd; 3268102087Sluigi cmd = next_cmd(cmd); 3269102087Sluigi } 3270102087Sluigi } 327198943Sluigi OR_BLOCK(source_ip); 327298943Sluigi 327398943Sluigi /* 327498943Sluigi * source ports, optional 327598943Sluigi */ 327698943Sluigi NOT_BLOCK; /* optional "not" */ 3277101641Sluigi if (ac) { 3278102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 3279102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 3280102087Sluigi ac--; av++; 3281102087Sluigi if (F_LEN(cmd) != 0) 3282102087Sluigi cmd = next_cmd(cmd); 3283101641Sluigi } 328498943Sluigi } 328598943Sluigi 328698943Sluigi /* 3287102087Sluigi * "to", mandatory 328898943Sluigi */ 3289102087Sluigi if (!ac || strncmp(*av, "to", strlen(*av))) 329098943Sluigi errx(EX_USAGE, "missing ``to''"); 329198943Sluigi av++; ac--; 329298943Sluigi 329398943Sluigi /* 329498943Sluigi * destination, mandatory 329598943Sluigi */ 329698943Sluigi OR_START(dest_ip); 329798943Sluigi NOT_BLOCK; /* optional "not" */ 329898943Sluigi NEED1("missing dst address"); 3299102087Sluigi if (add_dstip(cmd, *av)) { 3300102087Sluigi ac--; av++; 3301102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 3302102087Sluigi prev = cmd; 3303102087Sluigi cmd = next_cmd(cmd); 3304102087Sluigi } 3305102087Sluigi } 330698943Sluigi OR_BLOCK(dest_ip); 330798943Sluigi 330898943Sluigi /* 330998943Sluigi * dest. ports, optional 331098943Sluigi */ 331198943Sluigi NOT_BLOCK; /* optional "not" */ 3312101641Sluigi if (ac) { 3313102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 3314102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 3315102087Sluigi ac--; av++; 3316102087Sluigi if (F_LEN(cmd) != 0) 3317102087Sluigi cmd = next_cmd(cmd); 3318101641Sluigi } 331998943Sluigi } 332098943Sluigi 332198943Sluigiread_options: 3322102087Sluigi if (ac && first_cmd == cmd) { 3323102087Sluigi /* 3324102087Sluigi * nothing specified so far, store in the rule to ease 3325102087Sluigi * printout later. 3326102087Sluigi */ 3327102087Sluigi rule->_pad = 1; 3328102087Sluigi } 332998943Sluigi prev = NULL; 333098943Sluigi while (ac) { 3331101641Sluigi char *s; 3332101641Sluigi ipfw_insn_u32 *cmd32; /* alias for cmd */ 333398943Sluigi 3334101641Sluigi s = *av; 3335101641Sluigi cmd32 = (ipfw_insn_u32 *)cmd; 3336101641Sluigi 333798943Sluigi if (*s == '!') { /* alternate syntax for NOT */ 333898943Sluigi if (cmd->len & F_NOT) 333998943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 334098943Sluigi cmd->len = F_NOT; 334198943Sluigi s++; 334298943Sluigi } 334398943Sluigi i = match_token(rule_options, s); 334498943Sluigi ac--; av++; 334598943Sluigi switch(i) { 334698943Sluigi case TOK_NOT: 334798943Sluigi if (cmd->len & F_NOT) 334898943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 334998943Sluigi cmd->len = F_NOT; 335098943Sluigi break; 335198943Sluigi 335298943Sluigi case TOK_OR: 3353101641Sluigi if (open_par == 0 || prev == NULL) 335498943Sluigi errx(EX_USAGE, "invalid \"or\" block\n"); 335598943Sluigi prev->len |= F_OR; 335698943Sluigi break; 3357101641Sluigi 3358101641Sluigi case TOK_STARTBRACE: 3359101641Sluigi if (open_par) 3360101641Sluigi errx(EX_USAGE, "+nested \"(\" not allowed\n"); 3361101641Sluigi open_par = 1; 3362101641Sluigi break; 3363101641Sluigi 3364101641Sluigi case TOK_ENDBRACE: 3365101641Sluigi if (!open_par) 3366101641Sluigi errx(EX_USAGE, "+missing \")\"\n"); 3367101641Sluigi open_par = 0; 3368102087Sluigi prev = NULL; 3369101641Sluigi break; 3370101641Sluigi 337198943Sluigi case TOK_IN: 337298943Sluigi fill_cmd(cmd, O_IN, 0, 0); 337398943Sluigi break; 337498943Sluigi 337598943Sluigi case TOK_OUT: 337698943Sluigi cmd->len ^= F_NOT; /* toggle F_NOT */ 337798943Sluigi fill_cmd(cmd, O_IN, 0, 0); 337898943Sluigi break; 337998943Sluigi 338098943Sluigi case TOK_FRAG: 338198943Sluigi fill_cmd(cmd, O_FRAG, 0, 0); 338298943Sluigi break; 338398943Sluigi 338498943Sluigi case TOK_LAYER2: 338598943Sluigi fill_cmd(cmd, O_LAYER2, 0, 0); 338698943Sluigi break; 338798943Sluigi 338898943Sluigi case TOK_XMIT: 338998943Sluigi case TOK_RECV: 339098943Sluigi case TOK_VIA: 339198943Sluigi NEED1("recv, xmit, via require interface name" 339298943Sluigi " or address"); 339398943Sluigi fill_iface((ipfw_insn_if *)cmd, av[0]); 339498943Sluigi ac--; av++; 339598943Sluigi if (F_LEN(cmd) == 0) /* not a valid address */ 339698943Sluigi break; 339798943Sluigi if (i == TOK_XMIT) 339898943Sluigi cmd->opcode = O_XMIT; 339998943Sluigi else if (i == TOK_RECV) 340098943Sluigi cmd->opcode = O_RECV; 340198943Sluigi else if (i == TOK_VIA) 340298943Sluigi cmd->opcode = O_VIA; 340398943Sluigi break; 340498943Sluigi 340599475Sluigi case TOK_ICMPTYPES: 340699475Sluigi NEED1("icmptypes requires list of types"); 340799475Sluigi fill_icmptypes((ipfw_insn_u32 *)cmd, *av); 340899475Sluigi av++; ac--; 340999475Sluigi break; 341099475Sluigi 341198943Sluigi case TOK_IPTTL: 341298943Sluigi NEED1("ipttl requires TTL"); 3413116690Sluigi if (strpbrk(*av, "-,")) { 3414116690Sluigi if (!add_ports(cmd, *av, 0, O_IPTTL)) 3415116690Sluigi errx(EX_DATAERR, "invalid ipttl %s", *av); 3416116690Sluigi } else 3417116690Sluigi fill_cmd(cmd, O_IPTTL, 0, strtoul(*av, NULL, 0)); 341898943Sluigi ac--; av++; 341998943Sluigi break; 342098943Sluigi 342198943Sluigi case TOK_IPID: 3422116690Sluigi NEED1("ipid requires id"); 3423116690Sluigi if (strpbrk(*av, "-,")) { 3424116690Sluigi if (!add_ports(cmd, *av, 0, O_IPID)) 3425116690Sluigi errx(EX_DATAERR, "invalid ipid %s", *av); 3426116690Sluigi } else 3427116690Sluigi fill_cmd(cmd, O_IPID, 0, strtoul(*av, NULL, 0)); 342898943Sluigi ac--; av++; 342998943Sluigi break; 343098943Sluigi 343198943Sluigi case TOK_IPLEN: 343298943Sluigi NEED1("iplen requires length"); 3433116690Sluigi if (strpbrk(*av, "-,")) { 3434116690Sluigi if (!add_ports(cmd, *av, 0, O_IPLEN)) 3435116690Sluigi errx(EX_DATAERR, "invalid ip len %s", *av); 3436116690Sluigi } else 3437116690Sluigi fill_cmd(cmd, O_IPLEN, 0, strtoul(*av, NULL, 0)); 343898943Sluigi ac--; av++; 343998943Sluigi break; 344098943Sluigi 344198943Sluigi case TOK_IPVER: 344298943Sluigi NEED1("ipver requires version"); 344398943Sluigi fill_cmd(cmd, O_IPVER, 0, strtoul(*av, NULL, 0)); 344498943Sluigi ac--; av++; 344598943Sluigi break; 344698943Sluigi 344799475Sluigi case TOK_IPPRECEDENCE: 344899475Sluigi NEED1("ipprecedence requires value"); 344999475Sluigi fill_cmd(cmd, O_IPPRECEDENCE, 0, 345099475Sluigi (strtoul(*av, NULL, 0) & 7) << 5); 345199475Sluigi ac--; av++; 345299475Sluigi break; 345399475Sluigi 345498943Sluigi case TOK_IPOPTS: 345598943Sluigi NEED1("missing argument for ipoptions"); 3456101116Sluigi fill_flags(cmd, O_IPOPT, f_ipopts, *av); 345798943Sluigi ac--; av++; 345898943Sluigi break; 345998943Sluigi 346099475Sluigi case TOK_IPTOS: 346199475Sluigi NEED1("missing argument for iptos"); 3462101116Sluigi fill_flags(cmd, O_IPTOS, f_iptos, *av); 346399475Sluigi ac--; av++; 346499475Sluigi break; 346599475Sluigi 346698943Sluigi case TOK_UID: 346798943Sluigi NEED1("uid requires argument"); 346898943Sluigi { 346998943Sluigi char *end; 347098943Sluigi uid_t uid; 347198943Sluigi struct passwd *pwd; 347298943Sluigi 347398943Sluigi cmd->opcode = O_UID; 347498943Sluigi uid = strtoul(*av, &end, 0); 347598943Sluigi pwd = (*end == '\0') ? getpwuid(uid) : getpwnam(*av); 347698943Sluigi if (pwd == NULL) 347798943Sluigi errx(EX_DATAERR, "uid \"%s\" nonexistent", *av); 3478106504Smaxim cmd32->d[0] = pwd->pw_uid; 3479135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 348098943Sluigi ac--; av++; 348198943Sluigi } 348298943Sluigi break; 348398943Sluigi 348498943Sluigi case TOK_GID: 348598943Sluigi NEED1("gid requires argument"); 348698943Sluigi { 348798943Sluigi char *end; 348898943Sluigi gid_t gid; 348998943Sluigi struct group *grp; 349098943Sluigi 349198943Sluigi cmd->opcode = O_GID; 349298943Sluigi gid = strtoul(*av, &end, 0); 349398943Sluigi grp = (*end == '\0') ? getgrgid(gid) : getgrnam(*av); 349498943Sluigi if (grp == NULL) 349598943Sluigi errx(EX_DATAERR, "gid \"%s\" nonexistent", *av); 3496106504Smaxim cmd32->d[0] = grp->gr_gid; 3497135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 349898943Sluigi ac--; av++; 349998943Sluigi } 350098943Sluigi break; 350198943Sluigi 3502133600Scsjp case TOK_JAIL: 3503133600Scsjp NEED1("jail requires argument"); 3504133600Scsjp { 3505133600Scsjp char *end; 3506133600Scsjp int jid; 3507133600Scsjp 3508133600Scsjp cmd->opcode = O_JAIL; 3509133600Scsjp jid = (int)strtol(*av, &end, 0); 3510133600Scsjp if (jid < 0 || *end != '\0') 3511133600Scsjp errx(EX_DATAERR, "jail requires prison ID"); 3512135554Scsjp cmd32->d[0] = (uint32_t)jid; 3513135089Scsjp cmd->len |= F_INSN_SIZE(ipfw_insn_u32); 3514133600Scsjp ac--; av++; 3515133600Scsjp } 3516133600Scsjp break; 3517133600Scsjp 351898943Sluigi case TOK_ESTAB: 351998943Sluigi fill_cmd(cmd, O_ESTAB, 0, 0); 352098943Sluigi break; 352198943Sluigi 352298943Sluigi case TOK_SETUP: 352398943Sluigi fill_cmd(cmd, O_TCPFLAGS, 0, 352498943Sluigi (TH_SYN) | ( (TH_ACK) & 0xff) <<8 ); 352598943Sluigi break; 352698943Sluigi 352798943Sluigi case TOK_TCPOPTS: 352898943Sluigi NEED1("missing argument for tcpoptions"); 352998943Sluigi fill_flags(cmd, O_TCPOPTS, f_tcpopts, *av); 353098943Sluigi ac--; av++; 353198943Sluigi break; 353298943Sluigi 353398943Sluigi case TOK_TCPSEQ: 353498943Sluigi case TOK_TCPACK: 353598943Sluigi NEED1("tcpseq/tcpack requires argument"); 353698943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 353798943Sluigi cmd->opcode = (i == TOK_TCPSEQ) ? O_TCPSEQ : O_TCPACK; 353898943Sluigi cmd32->d[0] = htonl(strtoul(*av, NULL, 0)); 353998943Sluigi ac--; av++; 354098943Sluigi break; 354198943Sluigi 354298943Sluigi case TOK_TCPWIN: 354398943Sluigi NEED1("tcpwin requires length"); 354498943Sluigi fill_cmd(cmd, O_TCPWIN, 0, 354598943Sluigi htons(strtoul(*av, NULL, 0))); 354698943Sluigi ac--; av++; 354798943Sluigi break; 354898943Sluigi 354998943Sluigi case TOK_TCPFLAGS: 355098943Sluigi NEED1("missing argument for tcpflags"); 355198943Sluigi cmd->opcode = O_TCPFLAGS; 355298943Sluigi fill_flags(cmd, O_TCPFLAGS, f_tcpflags, *av); 355398943Sluigi ac--; av++; 355498943Sluigi break; 355598943Sluigi 355698943Sluigi case TOK_KEEPSTATE: 3557101641Sluigi if (open_par) 3558101641Sluigi errx(EX_USAGE, "keep-state cannot be part " 3559101641Sluigi "of an or block"); 356099909Sluigi if (have_state) 3561101116Sluigi errx(EX_USAGE, "only one of keep-state " 356299909Sluigi "and limit is allowed"); 3563101116Sluigi have_state = cmd; 356498943Sluigi fill_cmd(cmd, O_KEEP_STATE, 0, 0); 356598943Sluigi break; 356698943Sluigi 356798943Sluigi case TOK_LIMIT: 3568101641Sluigi if (open_par) 3569101641Sluigi errx(EX_USAGE, "limit cannot be part " 3570101641Sluigi "of an or block"); 357199909Sluigi if (have_state) 3572101116Sluigi errx(EX_USAGE, "only one of keep-state " 357399909Sluigi "and limit is allowed"); 3574101641Sluigi NEED1("limit needs mask and # of connections"); 3575101116Sluigi have_state = cmd; 357698943Sluigi { 357798943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 357898943Sluigi 357998943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_limit); 358098943Sluigi cmd->opcode = O_LIMIT; 358198943Sluigi c->limit_mask = 0; 358298943Sluigi c->conn_limit = 0; 358398943Sluigi for (; ac >1 ;) { 358498943Sluigi int val; 358598943Sluigi 358698943Sluigi val = match_token(limit_masks, *av); 358798943Sluigi if (val <= 0) 358898943Sluigi break; 358998943Sluigi c->limit_mask |= val; 359098943Sluigi ac--; av++; 359198943Sluigi } 359298943Sluigi c->conn_limit = atoi(*av); 359398943Sluigi if (c->conn_limit == 0) 359498943Sluigi errx(EX_USAGE, "limit: limit must be >0"); 359598943Sluigi if (c->limit_mask == 0) 359698943Sluigi errx(EX_USAGE, "missing limit mask"); 359798943Sluigi ac--; av++; 359898943Sluigi } 359998943Sluigi break; 360098943Sluigi 3601102087Sluigi case TOK_PROTO: 3602102087Sluigi NEED1("missing protocol"); 3603102087Sluigi if (add_proto(cmd, *av)) { 3604102087Sluigi proto = cmd->arg1; 3605102087Sluigi ac--; av++; 3606102098Sluigi } else 3607116438Smaxim errx(EX_DATAERR, "invalid protocol ``%s''", 3608116438Smaxim *av); 3609102087Sluigi break; 3610106505Smaxim 3611102087Sluigi case TOK_SRCIP: 3612102087Sluigi NEED1("missing source IP"); 3613102087Sluigi if (add_srcip(cmd, *av)) { 3614102087Sluigi ac--; av++; 3615102087Sluigi } 3616102087Sluigi break; 3617102087Sluigi 3618102087Sluigi case TOK_DSTIP: 3619102087Sluigi NEED1("missing destination IP"); 3620102087Sluigi if (add_dstip(cmd, *av)) { 3621102087Sluigi ac--; av++; 3622102087Sluigi } 3623102087Sluigi break; 3624102087Sluigi 3625102087Sluigi case TOK_SRCPORT: 3626102087Sluigi NEED1("missing source port"); 3627102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 3628102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 3629102087Sluigi ac--; av++; 3630102087Sluigi } else 3631102087Sluigi errx(EX_DATAERR, "invalid source port %s", *av); 3632102087Sluigi break; 3633102087Sluigi 3634102087Sluigi case TOK_DSTPORT: 3635102087Sluigi NEED1("missing destination port"); 3636102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 3637102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 3638102087Sluigi ac--; av++; 3639102087Sluigi } else 3640102087Sluigi errx(EX_DATAERR, "invalid destination port %s", 3641102087Sluigi *av); 3642102087Sluigi break; 3643102087Sluigi 3644102087Sluigi case TOK_MAC: 3645102087Sluigi if (add_mac(cmd, ac, av)) { 3646102087Sluigi ac -= 2; av += 2; 3647102087Sluigi } 3648102087Sluigi break; 3649102087Sluigi 3650102087Sluigi case TOK_MACTYPE: 3651102087Sluigi NEED1("missing mac type"); 3652102087Sluigi if (!add_mactype(cmd, ac, *av)) 3653116438Smaxim errx(EX_DATAERR, "invalid mac type %s", *av); 3654102087Sluigi ac--; av++; 3655102087Sluigi break; 3656102087Sluigi 3657112250Scjc case TOK_VERREVPATH: 3658112250Scjc fill_cmd(cmd, O_VERREVPATH, 0, 0); 3659112250Scjc break; 3660116919Sluigi 3661128575Sandre case TOK_VERSRCREACH: 3662128575Sandre fill_cmd(cmd, O_VERSRCREACH, 0, 0); 3663128575Sandre break; 3664128575Sandre 3665133387Sandre case TOK_ANTISPOOF: 3666133387Sandre fill_cmd(cmd, O_ANTISPOOF, 0, 0); 3667133387Sandre break; 3668133387Sandre 3669117241Sluigi case TOK_IPSEC: 3670117241Sluigi fill_cmd(cmd, O_IPSEC, 0, 0); 3671117241Sluigi break; 3672117241Sluigi 3673117469Sluigi case TOK_COMMENT: 3674117469Sluigi fill_comment(cmd, ac, av); 3675117469Sluigi av += ac; 3676117469Sluigi ac = 0; 3677117469Sluigi break; 3678117469Sluigi 367998943Sluigi default: 368098943Sluigi errx(EX_USAGE, "unrecognised option [%d] %s\n", i, s); 368198943Sluigi } 368298943Sluigi if (F_LEN(cmd) > 0) { /* prepare to advance */ 368398943Sluigi prev = cmd; 368498943Sluigi cmd = next_cmd(cmd); 368598943Sluigi } 368698943Sluigi } 368798943Sluigi 368898943Sluigidone: 368998943Sluigi /* 369098943Sluigi * Now copy stuff into the rule. 369198943Sluigi * If we have a keep-state option, the first instruction 369298943Sluigi * must be a PROBE_STATE (which is generated here). 369398943Sluigi * If we have a LOG option, it was stored as the first command, 369498943Sluigi * and now must be moved to the top of the action part. 369598943Sluigi */ 369698943Sluigi dst = (ipfw_insn *)rule->cmd; 369798943Sluigi 369898943Sluigi /* 3699107289Sluigi * First thing to write into the command stream is the match probability. 3700107289Sluigi */ 3701107289Sluigi if (match_prob != 1) { /* 1 means always match */ 3702107289Sluigi dst->opcode = O_PROB; 3703107289Sluigi dst->len = 2; 3704107289Sluigi *((int32_t *)(dst+1)) = (int32_t)(match_prob * 0x7fffffff); 3705107289Sluigi dst += dst->len; 3706107289Sluigi } 3707107289Sluigi 3708107289Sluigi /* 370998943Sluigi * generate O_PROBE_STATE if necessary 371098943Sluigi */ 3711101116Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 371298943Sluigi fill_cmd(dst, O_PROBE_STATE, 0, 0); 371398943Sluigi dst = next_cmd(dst); 371498943Sluigi } 371598943Sluigi /* 3716136071Sgreen * copy all commands but O_LOG, O_KEEP_STATE, O_LIMIT, O_ALTQ 371798943Sluigi */ 371898943Sluigi for (src = (ipfw_insn *)cmdbuf; src != cmd; src += i) { 371998943Sluigi i = F_LEN(src); 372098943Sluigi 3721101116Sluigi switch (src->opcode) { 3722101116Sluigi case O_LOG: 3723101116Sluigi case O_KEEP_STATE: 3724101116Sluigi case O_LIMIT: 3725136071Sgreen case O_ALTQ: 3726101116Sluigi break; 3727101116Sluigi default: 3728117328Sluigi bcopy(src, dst, i * sizeof(uint32_t)); 372998943Sluigi dst += i; 373098943Sluigi } 373198943Sluigi } 373298943Sluigi 373398943Sluigi /* 3734101116Sluigi * put back the have_state command as last opcode 3735101116Sluigi */ 3736101295Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 3737101116Sluigi i = F_LEN(have_state); 3738117328Sluigi bcopy(have_state, dst, i * sizeof(uint32_t)); 3739101116Sluigi dst += i; 3740101116Sluigi } 3741101116Sluigi /* 374298943Sluigi * start action section 374398943Sluigi */ 374498943Sluigi rule->act_ofs = dst - rule->cmd; 374598943Sluigi 374698943Sluigi /* 3747136071Sgreen * put back O_LOG, O_ALTQ if necessary 374898943Sluigi */ 3749136071Sgreen if (have_log) { 3750136071Sgreen i = F_LEN(have_log); 3751136071Sgreen bcopy(have_log, dst, i * sizeof(uint32_t)); 375298943Sluigi dst += i; 375398943Sluigi } 3754136071Sgreen if (have_altq) { 3755136071Sgreen i = F_LEN(have_altq); 3756136071Sgreen bcopy(have_altq, dst, i * sizeof(uint32_t)); 3757136071Sgreen dst += i; 3758136071Sgreen } 375998943Sluigi /* 376098943Sluigi * copy all other actions 376198943Sluigi */ 376298943Sluigi for (src = (ipfw_insn *)actbuf; src != action; src += i) { 376398943Sluigi i = F_LEN(src); 3764117328Sluigi bcopy(src, dst, i * sizeof(uint32_t)); 376598943Sluigi dst += i; 376698943Sluigi } 376798943Sluigi 3768117328Sluigi rule->cmd_len = (uint32_t *)dst - (uint32_t *)(rule->cmd); 3769117469Sluigi i = (char *)dst - (char *)rule; 3770119740Stmm if (do_cmd(IP_FW_ADD, rule, (uintptr_t)&i) == -1) 377198943Sluigi err(EX_UNAVAILABLE, "getsockopt(%s)", "IP_FW_ADD"); 377298943Sluigi if (!do_quiet) 3773117469Sluigi show_ipfw(rule, 0, 0); 377498943Sluigi} 377598943Sluigi 377698943Sluigistatic void 3777117328Sluigizero(int ac, char *av[], int optname /* IP_FW_ZERO or IP_FW_RESETLOG */) 377898943Sluigi{ 377998943Sluigi int rulenum; 378098943Sluigi int failed = EX_OK; 3781117469Sluigi char const *name = optname == IP_FW_ZERO ? "ZERO" : "RESETLOG"; 378298943Sluigi 378398943Sluigi av++; ac--; 378498943Sluigi 378598943Sluigi if (!ac) { 378698943Sluigi /* clear all entries */ 3787117328Sluigi if (do_cmd(optname, NULL, 0) < 0) 3788117328Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_FW_%s)", name); 378998943Sluigi if (!do_quiet) 3790117328Sluigi printf("%s.\n", optname == IP_FW_ZERO ? 3791117328Sluigi "Accounting cleared":"Logging counts reset"); 379298943Sluigi 379398943Sluigi return; 379498943Sluigi } 379598943Sluigi 379698943Sluigi while (ac) { 379798943Sluigi /* Rule number */ 379898943Sluigi if (isdigit(**av)) { 379998943Sluigi rulenum = atoi(*av); 380098943Sluigi av++; 380198943Sluigi ac--; 3802117328Sluigi if (do_cmd(optname, &rulenum, sizeof rulenum)) { 3803117328Sluigi warn("rule %u: setsockopt(IP_FW_%s)", 3804117328Sluigi rulenum, name); 380598943Sluigi failed = EX_UNAVAILABLE; 380698943Sluigi } else if (!do_quiet) 3807117328Sluigi printf("Entry %d %s.\n", rulenum, 3808117328Sluigi optname == IP_FW_ZERO ? 3809117328Sluigi "cleared" : "logging count reset"); 381098943Sluigi } else { 381198943Sluigi errx(EX_USAGE, "invalid rule number ``%s''", *av); 381298943Sluigi } 381398943Sluigi } 381498943Sluigi if (failed != EX_OK) 381598943Sluigi exit(failed); 381698943Sluigi} 381798943Sluigi 381898943Sluigistatic void 3819117544Sluigiflush(int force) 382098943Sluigi{ 382198943Sluigi int cmd = do_pipe ? IP_DUMMYNET_FLUSH : IP_FW_FLUSH; 382298943Sluigi 3823117544Sluigi if (!force && !do_quiet) { /* need to ask user */ 382498943Sluigi int c; 382598943Sluigi 382698943Sluigi printf("Are you sure? [yn] "); 382798943Sluigi fflush(stdout); 382898943Sluigi do { 382998943Sluigi c = toupper(getc(stdin)); 383098943Sluigi while (c != '\n' && getc(stdin) != '\n') 383198943Sluigi if (feof(stdin)) 383298943Sluigi return; /* and do not flush */ 383398943Sluigi } while (c != 'Y' && c != 'N'); 383498943Sluigi printf("\n"); 383598943Sluigi if (c == 'N') /* user said no */ 383698943Sluigi return; 383798943Sluigi } 3838117328Sluigi if (do_cmd(cmd, NULL, 0) < 0) 383998943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_%s_FLUSH)", 384098943Sluigi do_pipe ? "DUMMYNET" : "FW"); 384198943Sluigi if (!do_quiet) 384298943Sluigi printf("Flushed all %s.\n", do_pipe ? "pipes" : "rules"); 384398943Sluigi} 384498943Sluigi 3845117469Sluigi/* 3846117544Sluigi * Free a the (locally allocated) copy of command line arguments. 3847117469Sluigi */ 3848117544Sluigistatic void 3849117544Sluigifree_args(int ac, char **av) 3850117544Sluigi{ 3851117544Sluigi int i; 3852117544Sluigi 3853117544Sluigi for (i=0; i < ac; i++) 3854117544Sluigi free(av[i]); 3855117544Sluigi free(av); 3856117544Sluigi} 3857117544Sluigi 3858117544Sluigi/* 3859130281Sru * This one handles all table-related commands 3860130281Sru * ipfw table N add addr[/masklen] [value] 3861130281Sru * ipfw table N delete addr[/masklen] 3862130281Sru * ipfw table N flush 3863130281Sru * ipfw table N list 3864130281Sru */ 3865130281Srustatic void 3866130281Srutable_handler(int ac, char *av[]) 3867130281Sru{ 3868130281Sru ipfw_table_entry ent; 3869130281Sru ipfw_table *tbl; 3870130281Sru int do_add; 3871130281Sru char *p; 3872130281Sru socklen_t l; 3873130281Sru uint32_t a; 3874130281Sru 3875130281Sru ac--; av++; 3876130281Sru if (ac && isdigit(**av)) { 3877130281Sru ent.tbl = atoi(*av); 3878130281Sru ac--; av++; 3879130281Sru } else 3880130281Sru errx(EX_USAGE, "table number required"); 3881130281Sru NEED1("table needs command"); 3882130281Sru if (strncmp(*av, "add", strlen(*av)) == 0 || 3883130281Sru strncmp(*av, "delete", strlen(*av)) == 0) { 3884130281Sru do_add = **av == 'a'; 3885130281Sru ac--; av++; 3886130281Sru if (!ac) 3887130281Sru errx(EX_USAGE, "IP address required"); 3888130281Sru p = strchr(*av, '/'); 3889130281Sru if (p) { 3890130281Sru *p++ = '\0'; 3891130281Sru ent.masklen = atoi(p); 3892130281Sru if (ent.masklen > 32) 3893130281Sru errx(EX_DATAERR, "bad width ``%s''", p); 3894130281Sru } else 3895130281Sru ent.masklen = 32; 3896130281Sru if (lookup_host(*av, (struct in_addr *)&ent.addr) != 0) 3897130298Sru errx(EX_NOHOST, "hostname ``%s'' unknown", *av); 3898130281Sru ac--; av++; 3899130281Sru if (do_add && ac) 3900130281Sru ent.value = strtoul(*av, NULL, 0); 3901130281Sru else 3902130281Sru ent.value = 0; 3903130281Sru if (do_cmd(do_add ? IP_FW_TABLE_ADD : IP_FW_TABLE_DEL, 3904130281Sru &ent, sizeof(ent)) < 0) 3905130281Sru err(EX_OSERR, "setsockopt(IP_FW_TABLE_%s)", 3906130281Sru do_add ? "ADD" : "DEL"); 3907130281Sru } else if (strncmp(*av, "flush", strlen(*av)) == 0) { 3908130281Sru if (do_cmd(IP_FW_TABLE_FLUSH, &ent.tbl, sizeof(ent.tbl)) < 0) 3909130281Sru err(EX_OSERR, "setsockopt(IP_FW_TABLE_FLUSH)"); 3910130281Sru } else if (strncmp(*av, "list", strlen(*av)) == 0) { 3911130281Sru a = ent.tbl; 3912130281Sru l = sizeof(a); 3913130281Sru if (do_cmd(IP_FW_TABLE_GETSIZE, &a, (uintptr_t)&l) < 0) 3914130281Sru err(EX_OSERR, "getsockopt(IP_FW_TABLE_GETSIZE)"); 3915130281Sru l = sizeof(*tbl) + a * sizeof(ipfw_table_entry); 3916130281Sru tbl = malloc(l); 3917130281Sru if (tbl == NULL) 3918130281Sru err(EX_OSERR, "malloc"); 3919130281Sru tbl->tbl = ent.tbl; 3920130281Sru if (do_cmd(IP_FW_TABLE_LIST, tbl, (uintptr_t)&l) < 0) 3921130281Sru err(EX_OSERR, "getsockopt(IP_FW_TABLE_LIST)"); 3922130281Sru for (a = 0; a < tbl->cnt; a++) { 3923130281Sru printf("%s/%u %u\n", 3924130281Sru inet_ntoa(*(struct in_addr *)&tbl->ent[a].addr), 3925130281Sru tbl->ent[a].masklen, tbl->ent[a].value); 3926130281Sru } 3927130281Sru } else 3928130281Sru errx(EX_USAGE, "invalid table command %s", *av); 3929130281Sru} 3930130281Sru 3931130281Sru/* 3932117544Sluigi * Called with the arguments (excluding program name). 3933117544Sluigi * Returns 0 if successful, 1 if empty command, errx() in case of errors. 3934117544Sluigi */ 393598943Sluigistatic int 3936117328Sluigiipfw_main(int oldac, char **oldav) 393798943Sluigi{ 3938117469Sluigi int ch, ac, save_ac; 3939117469Sluigi char **av, **save_av; 3940117469Sluigi int do_acct = 0; /* Show packet/byte count */ 3941117469Sluigi 3942117469Sluigi#define WHITESP " \t\f\v\n\r" 3943117544Sluigi if (oldac == 0) 3944117544Sluigi return 1; 3945117544Sluigi else if (oldac == 1) { 3946117328Sluigi /* 3947117328Sluigi * If we are called with a single string, try to split it into 3948117328Sluigi * arguments for subsequent parsing. 3949117328Sluigi * But first, remove spaces after a ',', by copying the string 3950117328Sluigi * in-place. 3951117328Sluigi */ 3952117469Sluigi char *arg = oldav[0]; /* The string... */ 3953117328Sluigi int l = strlen(arg); 3954117328Sluigi int copy = 0; /* 1 if we need to copy, 0 otherwise */ 3955117328Sluigi int i, j; 3956117469Sluigi for (i = j = 0; i < l; i++) { 3957117469Sluigi if (arg[i] == '#') /* comment marker */ 3958117469Sluigi break; 3959117328Sluigi if (copy) { 3960117328Sluigi arg[j++] = arg[i]; 3961117469Sluigi copy = !index("," WHITESP, arg[i]); 3962117328Sluigi } else { 3963117469Sluigi copy = !index(WHITESP, arg[i]); 3964117328Sluigi if (copy) 3965117328Sluigi arg[j++] = arg[i]; 3966117328Sluigi } 3967117469Sluigi } 3968117328Sluigi if (!copy && j > 0) /* last char was a 'blank', remove it */ 3969117328Sluigi j--; 3970117328Sluigi l = j; /* the new argument length */ 3971117328Sluigi arg[j++] = '\0'; 3972117469Sluigi if (l == 0) /* empty string! */ 3973117544Sluigi return 1; 3974117328Sluigi 3975117328Sluigi /* 3976117328Sluigi * First, count number of arguments. Because of the previous 3977117469Sluigi * processing, this is just the number of blanks plus 1. 3978117328Sluigi */ 3979117469Sluigi for (i = 0, ac = 1; i < l; i++) 3980117469Sluigi if (index(WHITESP, arg[i]) != NULL) 3981117328Sluigi ac++; 3982117328Sluigi 3983117328Sluigi av = calloc(ac, sizeof(char *)); 3984117328Sluigi 3985117328Sluigi /* 3986117328Sluigi * Second, copy arguments from cmd[] to av[]. For each one, 3987117328Sluigi * j is the initial character, i is the one past the end. 3988117328Sluigi */ 3989117469Sluigi for (ac = 0, i = j = 0; i < l; i++) 3990117469Sluigi if (index(WHITESP, arg[i]) != NULL || i == l-1) { 3991117328Sluigi if (i == l-1) 3992117328Sluigi i++; 3993117328Sluigi av[ac] = calloc(i-j+1, 1); 3994117328Sluigi bcopy(arg+j, av[ac], i-j); 3995117328Sluigi ac++; 3996117328Sluigi j = i + 1; 3997117328Sluigi } 3998117328Sluigi } else { 3999117328Sluigi /* 4000117328Sluigi * If an argument ends with ',' join with the next one. 4001117328Sluigi */ 4002117328Sluigi int first, i, l; 4003117328Sluigi 4004117328Sluigi av = calloc(oldac, sizeof(char *)); 4005117328Sluigi for (first = i = ac = 0, l = 0; i < oldac; i++) { 4006117328Sluigi char *arg = oldav[i]; 4007117328Sluigi int k = strlen(arg); 4008117328Sluigi 4009117328Sluigi l += k; 4010117328Sluigi if (arg[k-1] != ',' || i == oldac-1) { 4011117328Sluigi /* Time to copy. */ 4012117328Sluigi av[ac] = calloc(l+1, 1); 4013117328Sluigi for (l=0; first <= i; first++) { 4014117328Sluigi strcat(av[ac]+l, oldav[first]); 4015117328Sluigi l += strlen(oldav[first]); 4016117328Sluigi } 4017117328Sluigi ac++; 4018117328Sluigi l = 0; 4019117328Sluigi first = i+1; 4020117328Sluigi } 4021117328Sluigi } 4022117328Sluigi } 4023117328Sluigi 402498943Sluigi /* Set the force flag for non-interactive processes */ 4025123804Smaxim if (!do_force) 4026123804Smaxim do_force = !isatty(STDIN_FILENO); 402798943Sluigi 4028117469Sluigi /* Save arguments for final freeing of memory. */ 4029117469Sluigi save_ac = ac; 4030117469Sluigi save_av = av; 4031117469Sluigi 4032117469Sluigi optind = optreset = 0; 4033123495Sluigi while ((ch = getopt(ac, av, "abcdefhnNqs:STtv")) != -1) 403498943Sluigi switch (ch) { 403598943Sluigi case 'a': 403698943Sluigi do_acct = 1; 403798943Sluigi break; 4038117328Sluigi 4039123495Sluigi case 'b': 4040123495Sluigi comment_only = 1; 4041123495Sluigi do_compact = 1; 4042123495Sluigi break; 4043123495Sluigi 4044102098Sluigi case 'c': 4045102098Sluigi do_compact = 1; 4046102098Sluigi break; 4047117328Sluigi 404898943Sluigi case 'd': 404998943Sluigi do_dynamic = 1; 405098943Sluigi break; 4051117328Sluigi 405298943Sluigi case 'e': 405398943Sluigi do_expired = 1; 405498943Sluigi break; 4055117328Sluigi 405698943Sluigi case 'f': 405798943Sluigi do_force = 1; 405898943Sluigi break; 4059117328Sluigi 4060117328Sluigi case 'h': /* help */ 4061117544Sluigi free_args(save_ac, save_av); 4062117328Sluigi help(); 4063117328Sluigi break; /* NOTREACHED */ 4064117328Sluigi 4065117328Sluigi case 'n': 4066117328Sluigi test_only = 1; 4067117328Sluigi break; 4068117328Sluigi 406998943Sluigi case 'N': 407098943Sluigi do_resolv = 1; 407198943Sluigi break; 4072117328Sluigi 407398943Sluigi case 'q': 407498943Sluigi do_quiet = 1; 407598943Sluigi break; 4076117328Sluigi 4077117328Sluigi case 's': /* sort */ 4078117328Sluigi do_sort = atoi(optarg); 4079117328Sluigi break; 4080117328Sluigi 4081101628Sluigi case 'S': 4082101628Sluigi show_sets = 1; 4083101628Sluigi break; 4084117328Sluigi 408598943Sluigi case 't': 408698943Sluigi do_time = 1; 408798943Sluigi break; 4088117328Sluigi 4089117472Sluigi case 'T': 4090117472Sluigi do_time = 2; /* numeric timestamp */ 4091117472Sluigi break; 4092117472Sluigi 409398943Sluigi case 'v': /* verbose */ 4094117328Sluigi verbose = 1; 409598943Sluigi break; 4096117328Sluigi 409798943Sluigi default: 4098117544Sluigi free_args(save_ac, save_av); 4099117544Sluigi return 1; 410098943Sluigi } 410198943Sluigi 410298943Sluigi ac -= optind; 410398943Sluigi av += optind; 410498943Sluigi NEED1("bad arguments, for usage summary ``ipfw''"); 410598943Sluigi 410698943Sluigi /* 4107117544Sluigi * An undocumented behaviour of ipfw1 was to allow rule numbers first, 4108117544Sluigi * e.g. "100 add allow ..." instead of "add 100 allow ...". 4109117544Sluigi * In case, swap first and second argument to get the normal form. 4110117544Sluigi */ 4111117544Sluigi if (ac > 1 && isdigit(*av[0])) { 4112117544Sluigi char *p = av[0]; 4113117544Sluigi 4114117544Sluigi av[0] = av[1]; 4115117544Sluigi av[1] = p; 4116117544Sluigi } 4117117544Sluigi 4118117544Sluigi /* 411998943Sluigi * optional: pipe or queue 412098943Sluigi */ 4121117821Smaxim do_pipe = 0; 4122117544Sluigi if (!strncmp(*av, "pipe", strlen(*av))) 412398943Sluigi do_pipe = 1; 4124117544Sluigi else if (!strncmp(*av, "queue", strlen(*av))) 412598943Sluigi do_pipe = 2; 4126117544Sluigi if (do_pipe) { 412798943Sluigi ac--; 412898943Sluigi av++; 412998943Sluigi } 413098943Sluigi NEED1("missing command"); 413198943Sluigi 413298943Sluigi /* 4133117328Sluigi * For pipes and queues we normally say 'pipe NN config' 413498943Sluigi * but the code is easier to parse as 'pipe config NN' 413598943Sluigi * so we swap the two arguments. 413698943Sluigi */ 4137117469Sluigi if (do_pipe > 0 && ac > 1 && isdigit(*av[0])) { 413898943Sluigi char *p = av[0]; 4139117544Sluigi 414098943Sluigi av[0] = av[1]; 414198943Sluigi av[1] = p; 414298943Sluigi } 4143117328Sluigi 414498943Sluigi if (!strncmp(*av, "add", strlen(*av))) 414598943Sluigi add(ac, av); 414698943Sluigi else if (do_pipe && !strncmp(*av, "config", strlen(*av))) 414798943Sluigi config_pipe(ac, av); 4148101978Sluigi else if (!strncmp(*av, "delete", strlen(*av))) 414998943Sluigi delete(ac, av); 415098943Sluigi else if (!strncmp(*av, "flush", strlen(*av))) 4151117544Sluigi flush(do_force); 415298943Sluigi else if (!strncmp(*av, "zero", strlen(*av))) 4153117328Sluigi zero(ac, av, IP_FW_ZERO); 415498943Sluigi else if (!strncmp(*av, "resetlog", strlen(*av))) 4155117328Sluigi zero(ac, av, IP_FW_RESETLOG); 415698943Sluigi else if (!strncmp(*av, "print", strlen(*av)) || 415798943Sluigi !strncmp(*av, "list", strlen(*av))) 4158117469Sluigi list(ac, av, do_acct); 4159101978Sluigi else if (!strncmp(*av, "set", strlen(*av))) 4160101978Sluigi sets_handler(ac, av); 4161130281Sru else if (!strncmp(*av, "table", strlen(*av))) 4162130281Sru table_handler(ac, av); 4163109126Sdillon else if (!strncmp(*av, "enable", strlen(*av))) 4164109126Sdillon sysctl_handler(ac, av, 1); 4165109126Sdillon else if (!strncmp(*av, "disable", strlen(*av))) 4166109126Sdillon sysctl_handler(ac, av, 0); 4167117469Sluigi else if (!strncmp(*av, "show", strlen(*av))) 4168117469Sluigi list(ac, av, 1 /* show counters */); 4169117469Sluigi else 417098943Sluigi errx(EX_USAGE, "bad command `%s'", *av); 4171117469Sluigi 4172117469Sluigi /* Free memory allocated in the argument parsing. */ 4173117544Sluigi free_args(save_ac, save_av); 417498943Sluigi return 0; 417598943Sluigi} 417698943Sluigi 417798943Sluigi 417898943Sluigistatic void 4179106505Smaximipfw_readfile(int ac, char *av[]) 418098943Sluigi{ 418198943Sluigi#define MAX_ARGS 32 418298943Sluigi char buf[BUFSIZ]; 4183117469Sluigi char *cmd = NULL, *filename = av[ac-1]; 4184117469Sluigi int c, lineno=0; 418598943Sluigi FILE *f = NULL; 418698943Sluigi pid_t preproc = 0; 418798943Sluigi 4188117469Sluigi filename = av[ac-1]; 4189117469Sluigi 4190123804Smaxim while ((c = getopt(ac, av, "cfNnp:qS")) != -1) { 419198943Sluigi switch(c) { 4192117469Sluigi case 'c': 4193117469Sluigi do_compact = 1; 4194117469Sluigi break; 4195117469Sluigi 4196123804Smaxim case 'f': 4197123804Smaxim do_force = 1; 4198123804Smaxim break; 4199123804Smaxim 4200117469Sluigi case 'N': 4201117469Sluigi do_resolv = 1; 4202117469Sluigi break; 4203117469Sluigi 4204117328Sluigi case 'n': 4205117328Sluigi test_only = 1; 4206117328Sluigi break; 4207117328Sluigi 420898943Sluigi case 'p': 420998943Sluigi cmd = optarg; 4210117469Sluigi /* 4211117469Sluigi * Skip previous args and delete last one, so we 4212117469Sluigi * pass all but the last argument to the preprocessor 4213117469Sluigi * via av[optind-1] 4214117469Sluigi */ 4215117469Sluigi av += optind - 1; 4216117469Sluigi ac -= optind - 1; 4217117469Sluigi av[ac-1] = NULL; 4218117469Sluigi fprintf(stderr, "command is %s\n", av[0]); 421998943Sluigi break; 422098943Sluigi 422198943Sluigi case 'q': 4222117469Sluigi do_quiet = 1; 422398943Sluigi break; 422498943Sluigi 4225117469Sluigi case 'S': 4226117469Sluigi show_sets = 1; 4227117469Sluigi break; 4228117469Sluigi 422998943Sluigi default: 423098943Sluigi errx(EX_USAGE, "bad arguments, for usage" 423198943Sluigi " summary ``ipfw''"); 423298943Sluigi } 423398943Sluigi 4234117469Sluigi if (cmd != NULL) 4235108231Skbyanc break; 4236108231Skbyanc } 4237108231Skbyanc 4238117469Sluigi if (cmd == NULL && ac != optind + 1) { 4239117469Sluigi fprintf(stderr, "ac %d, optind %d\n", ac, optind); 4240117469Sluigi errx(EX_USAGE, "extraneous filename arguments"); 4241108231Skbyanc } 4242108231Skbyanc 4243117469Sluigi if ((f = fopen(filename, "r")) == NULL) 4244117469Sluigi err(EX_UNAVAILABLE, "fopen: %s", filename); 424598943Sluigi 4246117469Sluigi if (cmd != NULL) { /* pipe through preprocessor */ 424798943Sluigi int pipedes[2]; 424898943Sluigi 424998943Sluigi if (pipe(pipedes) == -1) 425098943Sluigi err(EX_OSERR, "cannot create pipe"); 425198943Sluigi 4252117469Sluigi preproc = fork(); 4253117469Sluigi if (preproc == -1) 425498943Sluigi err(EX_OSERR, "cannot fork"); 425598943Sluigi 4256117577Sluigi if (preproc == 0) { 4257117469Sluigi /* 4258117469Sluigi * Child, will run the preprocessor with the 4259117469Sluigi * file on stdin and the pipe on stdout. 4260117469Sluigi */ 426198943Sluigi if (dup2(fileno(f), 0) == -1 426298943Sluigi || dup2(pipedes[1], 1) == -1) 426398943Sluigi err(EX_OSERR, "dup2()"); 426498943Sluigi fclose(f); 426598943Sluigi close(pipedes[1]); 426698943Sluigi close(pipedes[0]); 4267117469Sluigi execvp(cmd, av); 426898943Sluigi err(EX_OSERR, "execvp(%s) failed", cmd); 4269117469Sluigi } else { /* parent, will reopen f as the pipe */ 427098943Sluigi fclose(f); 427198943Sluigi close(pipedes[1]); 427298943Sluigi if ((f = fdopen(pipedes[0], "r")) == NULL) { 427398943Sluigi int savederrno = errno; 427498943Sluigi 427598943Sluigi (void)kill(preproc, SIGTERM); 427698943Sluigi errno = savederrno; 427798943Sluigi err(EX_OSERR, "fdopen()"); 427898943Sluigi } 427998943Sluigi } 428098943Sluigi } 428198943Sluigi 4282117469Sluigi while (fgets(buf, BUFSIZ, f)) { /* read commands */ 4283117469Sluigi char linename[10]; 4284117469Sluigi char *args[1]; 4285117469Sluigi 428698943Sluigi lineno++; 428798943Sluigi sprintf(linename, "Line %d", lineno); 4288117328Sluigi setprogname(linename); /* XXX */ 4289117469Sluigi args[0] = buf; 4290117469Sluigi ipfw_main(1, args); 429198943Sluigi } 429298943Sluigi fclose(f); 4293117469Sluigi if (cmd != NULL) { 4294117469Sluigi int status; 4295117469Sluigi 429698943Sluigi if (waitpid(preproc, &status, 0) == -1) 429798943Sluigi errx(EX_OSERR, "waitpid()"); 429898943Sluigi if (WIFEXITED(status) && WEXITSTATUS(status) != EX_OK) 429998943Sluigi errx(EX_UNAVAILABLE, 430098943Sluigi "preprocessor exited with status %d", 430198943Sluigi WEXITSTATUS(status)); 430298943Sluigi else if (WIFSIGNALED(status)) 430398943Sluigi errx(EX_UNAVAILABLE, 430498943Sluigi "preprocessor exited with signal %d", 430598943Sluigi WTERMSIG(status)); 430698943Sluigi } 430798943Sluigi} 430898943Sluigi 430998943Sluigiint 431098943Sluigimain(int ac, char *av[]) 431198943Sluigi{ 431298943Sluigi /* 431398943Sluigi * If the last argument is an absolute pathname, interpret it 431498943Sluigi * as a file to be preprocessed. 431598943Sluigi */ 431698943Sluigi 431798943Sluigi if (ac > 1 && av[ac - 1][0] == '/' && access(av[ac - 1], R_OK) == 0) 431898943Sluigi ipfw_readfile(ac, av); 4319117544Sluigi else { 4320117544Sluigi if (ipfw_main(ac-1, av+1)) 4321117544Sluigi show_usage(); 4322117544Sluigi } 432398943Sluigi return EX_OK; 432498943Sluigi} 4325