ipfw2.c revision 101117
198943Sluigi/* 298943Sluigi * Copyright (c) 2002 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 101117 2002-07-31 22:42:08Z luigi $ 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> 3098943Sluigi 3198943Sluigi#include <ctype.h> 3298943Sluigi#include <err.h> 3398943Sluigi#include <errno.h> 3498943Sluigi#include <grp.h> 3598943Sluigi#include <limits.h> 3698943Sluigi#include <netdb.h> 3798943Sluigi#include <pwd.h> 3898943Sluigi#include <signal.h> 3998943Sluigi#include <stdio.h> 4098943Sluigi#include <stdlib.h> 4198943Sluigi#include <stdarg.h> 4298943Sluigi#include <string.h> 4399603Sbde#include <timeconv.h> 4498943Sluigi#include <unistd.h> 4598943Sluigi#include <sysexits.h> 4698943Sluigi 4798943Sluigi#include <net/if.h> 4898943Sluigi#include <netinet/in.h> 4998943Sluigi#include <netinet/in_systm.h> 5098943Sluigi#include <netinet/ip.h> 5198943Sluigi#include <netinet/ip_icmp.h> 5298943Sluigi#include <netinet/ip_fw.h> 5398943Sluigi#include <net/route.h> /* def. of struct route */ 5498943Sluigi#include <netinet/ip_dummynet.h> 5598943Sluigi#include <netinet/tcp.h> 5698943Sluigi#include <arpa/inet.h> 5798943Sluigi 5898943Sluigiint s, /* main RAW socket */ 5998943Sluigi do_resolv, /* Would try to resolve all */ 6098943Sluigi do_acct, /* Show packet/byte count */ 6198943Sluigi do_time, /* Show time stamps */ 6298943Sluigi do_quiet, /* Be quiet in add and flush */ 6398943Sluigi do_force, /* Don't ask for confirmation */ 6498943Sluigi do_pipe, /* this cmd refers to a pipe */ 6598943Sluigi do_sort, /* field to sort results (0 = no) */ 6698943Sluigi do_dynamic, /* display dynamic rules */ 6798943Sluigi do_expired, /* display expired dynamic rules */ 6898943Sluigi verbose; 6998943Sluigi 7098943Sluigi#define IP_MASK_ALL 0xffffffff 7198943Sluigi 7298943Sluigi/* 7398943Sluigi * structure to hold flag names and associated values to be 7498943Sluigi * set in the appropriate masks. 7598943Sluigi * A NULL string terminates the array. 7698943Sluigi * Often, an element with 0 value contains an error string. 7798943Sluigi * 7898943Sluigi */ 7998943Sluigistruct _s_x { 8098943Sluigi char *s; 8198943Sluigi int x; 8298943Sluigi}; 8398943Sluigi 8498943Sluigistatic struct _s_x f_tcpflags[] = { 8598943Sluigi { "syn", TH_SYN }, 8698943Sluigi { "fin", TH_FIN }, 8798943Sluigi { "ack", TH_ACK }, 8898943Sluigi { "psh", TH_PUSH }, 8998943Sluigi { "rst", TH_RST }, 9098943Sluigi { "urg", TH_URG }, 9198943Sluigi { "tcp flag", 0 }, 9298943Sluigi { NULL, 0 } 9398943Sluigi}; 9498943Sluigi 9598943Sluigistatic struct _s_x f_tcpopts[] = { 9698943Sluigi { "mss", IP_FW_TCPOPT_MSS }, 9798943Sluigi { "maxseg", IP_FW_TCPOPT_MSS }, 9898943Sluigi { "window", IP_FW_TCPOPT_WINDOW }, 9998943Sluigi { "sack", IP_FW_TCPOPT_SACK }, 10098943Sluigi { "ts", IP_FW_TCPOPT_TS }, 10198943Sluigi { "timestamp", IP_FW_TCPOPT_TS }, 10298943Sluigi { "cc", IP_FW_TCPOPT_CC }, 10398943Sluigi { "tcp option", 0 }, 10498943Sluigi { NULL, 0 } 10598943Sluigi}; 10698943Sluigi 10798943Sluigi/* 10898943Sluigi * IP options span the range 0 to 255 so we need to remap them 10998943Sluigi * (though in fact only the low 5 bits are significant). 11098943Sluigi */ 11198943Sluigistatic struct _s_x f_ipopts[] = { 11298943Sluigi { "ssrr", IP_FW_IPOPT_SSRR}, 11398943Sluigi { "lsrr", IP_FW_IPOPT_LSRR}, 11498943Sluigi { "rr", IP_FW_IPOPT_RR}, 11598943Sluigi { "ts", IP_FW_IPOPT_TS}, 11698943Sluigi { "ip option", 0 }, 11798943Sluigi { NULL, 0 } 11898943Sluigi}; 11998943Sluigi 12098943Sluigistatic struct _s_x f_iptos[] = { 12198943Sluigi { "lowdelay", IPTOS_LOWDELAY}, 12298943Sluigi { "throughput", IPTOS_THROUGHPUT}, 12398943Sluigi { "reliability", IPTOS_RELIABILITY}, 12498943Sluigi { "mincost", IPTOS_MINCOST}, 12598943Sluigi { "congestion", IPTOS_CE}, 12698943Sluigi { "ecntransport", IPTOS_ECT}, 12798943Sluigi { "ip tos option", 0}, 12898943Sluigi { NULL, 0 } 12998943Sluigi}; 13098943Sluigi 13198943Sluigistatic struct _s_x limit_masks[] = { 13298943Sluigi {"all", DYN_SRC_ADDR|DYN_SRC_PORT|DYN_DST_ADDR|DYN_DST_PORT}, 13398943Sluigi {"src-addr", DYN_SRC_ADDR}, 13498943Sluigi {"src-port", DYN_SRC_PORT}, 13598943Sluigi {"dst-addr", DYN_DST_ADDR}, 13698943Sluigi {"dst-port", DYN_DST_PORT}, 13798943Sluigi {NULL, 0} 13898943Sluigi}; 13998943Sluigi 14098943Sluigi/* 14198943Sluigi * we use IPPROTO_ETHERTYPE as a fake protocol id to call the print routines 14298943Sluigi * This is only used in this code. 14398943Sluigi */ 14498943Sluigi#define IPPROTO_ETHERTYPE 0x1000 14598943Sluigistatic struct _s_x ether_types[] = { 14698943Sluigi /* 14798943Sluigi * Note, we cannot use "-:&/" in the names because they are field 14898943Sluigi * separators in the type specifications. Also, we use s = NULL as 14998943Sluigi * end-delimiter, because a type of 0 can be legal. 15098943Sluigi */ 15198943Sluigi { "ip", 0x0800 }, 15298943Sluigi { "ipv4", 0x0800 }, 15398943Sluigi { "ipv6", 0x86dd }, 15498943Sluigi { "arp", 0x0806 }, 15598943Sluigi { "rarp", 0x8035 }, 15698943Sluigi { "vlan", 0x8100 }, 15798943Sluigi { "loop", 0x9000 }, 15898943Sluigi { "trail", 0x1000 }, 15998943Sluigi { "at", 0x809b }, 16098943Sluigi { "atalk", 0x809b }, 16198943Sluigi { "aarp", 0x80f3 }, 16298943Sluigi { "pppoe_disc", 0x8863 }, 16398943Sluigi { "pppoe_sess", 0x8864 }, 16498943Sluigi { "ipx_8022", 0x00E0 }, 16598943Sluigi { "ipx_8023", 0x0000 }, 16698943Sluigi { "ipx_ii", 0x8137 }, 16798943Sluigi { "ipx_snap", 0x8137 }, 16898943Sluigi { "ipx", 0x8137 }, 16998943Sluigi { "ns", 0x0600 }, 17098943Sluigi { NULL, 0 } 17198943Sluigi}; 17298943Sluigi 17398943Sluigistatic void show_usage(void); 17498943Sluigi 17598943Sluigienum tokens { 17698943Sluigi TOK_NULL=0, 17798943Sluigi 17898943Sluigi TOK_OR, 17998943Sluigi TOK_NOT, 18098943Sluigi 18198943Sluigi TOK_ACCEPT, 18298943Sluigi TOK_COUNT, 18398943Sluigi TOK_PIPE, 18498943Sluigi TOK_QUEUE, 18598943Sluigi TOK_DIVERT, 18698943Sluigi TOK_TEE, 18798943Sluigi TOK_FORWARD, 18898943Sluigi TOK_SKIPTO, 18998943Sluigi TOK_DENY, 19098943Sluigi TOK_REJECT, 19198943Sluigi TOK_RESET, 19298943Sluigi TOK_UNREACH, 19398943Sluigi TOK_CHECKSTATE, 19498943Sluigi 19598943Sluigi TOK_UID, 19698943Sluigi TOK_GID, 19798943Sluigi TOK_IN, 19898943Sluigi TOK_LIMIT, 19998943Sluigi TOK_KEEPSTATE, 20098943Sluigi TOK_LAYER2, 20198943Sluigi TOK_OUT, 20298943Sluigi TOK_XMIT, 20398943Sluigi TOK_RECV, 20498943Sluigi TOK_VIA, 20598943Sluigi TOK_FRAG, 20698943Sluigi TOK_IPOPTS, 20798943Sluigi TOK_IPLEN, 20898943Sluigi TOK_IPID, 20998943Sluigi TOK_IPPRECEDENCE, 21098943Sluigi TOK_IPTOS, 21198943Sluigi TOK_IPTTL, 21298943Sluigi TOK_IPVER, 21398943Sluigi TOK_ESTAB, 21498943Sluigi TOK_SETUP, 21598943Sluigi TOK_TCPFLAGS, 21698943Sluigi TOK_TCPOPTS, 21798943Sluigi TOK_TCPSEQ, 21898943Sluigi TOK_TCPACK, 21998943Sluigi TOK_TCPWIN, 22098943Sluigi TOK_ICMPTYPES, 22198943Sluigi 22298943Sluigi TOK_PLR, 22398943Sluigi TOK_BUCKETS, 22498943Sluigi TOK_DSTIP, 22598943Sluigi TOK_SRCIP, 22698943Sluigi TOK_DSTPORT, 22798943Sluigi TOK_SRCPORT, 22898943Sluigi TOK_ALL, 22998943Sluigi TOK_MASK, 23098943Sluigi TOK_BW, 23198943Sluigi TOK_DELAY, 23298943Sluigi TOK_RED, 23398943Sluigi TOK_GRED, 23498943Sluigi TOK_DROPTAIL, 23598943Sluigi TOK_PROTO, 23698943Sluigi TOK_WEIGHT, 23798943Sluigi}; 23898943Sluigi 23998943Sluigistruct _s_x dummynet_params[] = { 24098943Sluigi { "plr", TOK_PLR }, 24198943Sluigi { "buckets", TOK_BUCKETS }, 24298943Sluigi { "dst-ip", TOK_DSTIP }, 24398943Sluigi { "src-ip", TOK_SRCIP }, 24498943Sluigi { "dst-port", TOK_DSTPORT }, 24598943Sluigi { "src-port", TOK_SRCPORT }, 24698943Sluigi { "proto", TOK_PROTO }, 24798943Sluigi { "weight", TOK_WEIGHT }, 24898943Sluigi { "all", TOK_ALL }, 24998943Sluigi { "mask", TOK_MASK }, 25098943Sluigi { "droptail", TOK_DROPTAIL }, 25198943Sluigi { "red", TOK_RED }, 25298943Sluigi { "gred", TOK_GRED }, 25398943Sluigi { "bw", TOK_BW }, 25498943Sluigi { "bandwidth", TOK_BW }, 25598943Sluigi { "delay", TOK_DELAY }, 25699475Sluigi { "pipe", TOK_PIPE }, 25798943Sluigi { "queue", TOK_QUEUE }, 25898943Sluigi { "dummynet-params", TOK_NULL }, 25998943Sluigi { NULL, 0 } 26098943Sluigi}; 26198943Sluigi 26298943Sluigistruct _s_x rule_actions[] = { 26398943Sluigi { "accept", TOK_ACCEPT }, 26498943Sluigi { "pass", TOK_ACCEPT }, 26598943Sluigi { "allow", TOK_ACCEPT }, 26698943Sluigi { "permit", TOK_ACCEPT }, 26798943Sluigi { "count", TOK_COUNT }, 26898943Sluigi { "pipe", TOK_PIPE }, 26998943Sluigi { "queue", TOK_QUEUE }, 27098943Sluigi { "divert", TOK_DIVERT }, 27198943Sluigi { "tee", TOK_TEE }, 27298943Sluigi { "fwd", TOK_FORWARD }, 27398943Sluigi { "forward", TOK_FORWARD }, 27498943Sluigi { "skipto", TOK_SKIPTO }, 27598943Sluigi { "deny", TOK_DENY }, 27698943Sluigi { "drop", TOK_DENY }, 27798943Sluigi { "reject", TOK_REJECT }, 27898943Sluigi { "reset", TOK_RESET }, 27999475Sluigi { "unreach", TOK_UNREACH }, 28098943Sluigi { "check-state", TOK_CHECKSTATE }, 28198943Sluigi { NULL, TOK_NULL }, 28298943Sluigi { NULL, 0 } 28398943Sluigi}; 28498943Sluigi 28598943Sluigistruct _s_x rule_options[] = { 28698943Sluigi { "uid", TOK_UID }, 28798943Sluigi { "gid", TOK_GID }, 28898943Sluigi { "in", TOK_IN }, 28998943Sluigi { "limit", TOK_LIMIT }, 29098943Sluigi { "keep-state", TOK_KEEPSTATE }, 29198943Sluigi { "bridged", TOK_LAYER2 }, 29298943Sluigi { "layer2", TOK_LAYER2 }, 29398943Sluigi { "out", TOK_OUT }, 29498943Sluigi { "xmit", TOK_XMIT }, 29598943Sluigi { "recv", TOK_RECV }, 29698943Sluigi { "via", TOK_VIA }, 29798943Sluigi { "fragment", TOK_FRAG }, 29898943Sluigi { "frag", TOK_FRAG }, 29998943Sluigi { "ipoptions", TOK_IPOPTS }, 30098943Sluigi { "ipopts", TOK_IPOPTS }, 30198943Sluigi { "iplen", TOK_IPLEN }, 30298943Sluigi { "ipid", TOK_IPID }, 30398943Sluigi { "ipprecedence", TOK_IPPRECEDENCE }, 30498943Sluigi { "iptos", TOK_IPTOS }, 30598943Sluigi { "ipttl", TOK_IPTTL }, 30698943Sluigi { "ipversion", TOK_IPVER }, 30798943Sluigi { "ipver", TOK_IPVER }, 30898943Sluigi { "estab", TOK_ESTAB }, 30998943Sluigi { "established", TOK_ESTAB }, 31098943Sluigi { "setup", TOK_SETUP }, 31198943Sluigi { "tcpflags", TOK_TCPFLAGS }, 31298943Sluigi { "tcpflgs", TOK_TCPFLAGS }, 31398943Sluigi { "tcpoptions", TOK_TCPOPTS }, 31498943Sluigi { "tcpopts", TOK_TCPOPTS }, 31598943Sluigi { "tcpseq", TOK_TCPSEQ }, 31698943Sluigi { "tcpack", TOK_TCPACK }, 31798943Sluigi { "tcpwin", TOK_TCPWIN }, 31899909Sluigi { "icmptype", TOK_ICMPTYPES }, 31998943Sluigi { "icmptypes", TOK_ICMPTYPES }, 32098943Sluigi 32198943Sluigi { "not", TOK_NOT }, /* pseudo option */ 32298943Sluigi { "!", /* escape ? */ TOK_NOT }, /* pseudo option */ 32398943Sluigi { "or", TOK_OR }, /* pseudo option */ 32498943Sluigi { "|", /* escape */ TOK_OR }, /* pseudo option */ 32598943Sluigi { NULL, TOK_NULL }, 32698943Sluigi { NULL, 0 } 32798943Sluigi}; 32898943Sluigi 32998943Sluigi/** 33098943Sluigi * match_token takes a table and a string, returns the value associated 33198943Sluigi * with the string (0 meaning an error in most cases) 33298943Sluigi */ 33398943Sluigistatic int 33498943Sluigimatch_token(struct _s_x *table, char *string) 33598943Sluigi{ 33698943Sluigi struct _s_x *pt; 33798943Sluigi int i = strlen(string); 33898943Sluigi 33998943Sluigi for (pt = table ; i && pt->s != NULL ; pt++) 34098943Sluigi if (strlen(pt->s) == i && !bcmp(string, pt->s, i)) 34198943Sluigi return pt->x; 34298943Sluigi return -1; 34398943Sluigi}; 34498943Sluigi 34598943Sluigistatic char * 34698943Sluigimatch_value(struct _s_x *p, u_int32_t value) 34798943Sluigi{ 34898943Sluigi for (; p->s != NULL; p++) 34998943Sluigi if (p->x == value) 35098943Sluigi return p->s; 35198943Sluigi return NULL; 35298943Sluigi} 35398943Sluigi 35498943Sluigi/* 35598943Sluigi * prints one port, symbolic or numeric 35698943Sluigi */ 35798943Sluigistatic void 35898943Sluigiprint_port(int proto, u_int16_t port) 35998943Sluigi{ 36098943Sluigi 36198943Sluigi if (proto == IPPROTO_ETHERTYPE) { 36298943Sluigi char *s; 36398943Sluigi 36498943Sluigi if (do_resolv && (s = match_value(ether_types, port)) ) 36598943Sluigi printf("%s", s); 36698943Sluigi else 36798943Sluigi printf("0x%04x", port); 36898943Sluigi } else { 36998943Sluigi struct servent *se = NULL; 37098943Sluigi if (do_resolv) { 37198943Sluigi struct protoent *pe = getprotobynumber(proto); 37298943Sluigi 37398943Sluigi se = getservbyport(htons(port), pe ? pe->p_name : NULL); 37498943Sluigi } 37598943Sluigi if (se) 37698943Sluigi printf("%s", se->s_name); 37798943Sluigi else 37898943Sluigi printf("%d", port); 37998943Sluigi } 38098943Sluigi} 38198943Sluigi 38298943Sluigi/* 38398943Sluigi * print the values in a list of ports 38498943Sluigi * XXX todo: add support for mask. 38598943Sluigi */ 38698943Sluigistatic void 38798943Sluigiprint_newports(ipfw_insn_u16 *cmd, int proto) 38898943Sluigi{ 38998943Sluigi u_int16_t *p = cmd->ports; 39098943Sluigi int i; 39198943Sluigi char *sep= " "; 39298943Sluigi 39398943Sluigi if (cmd->o.len & F_NOT) 39498943Sluigi printf(" not"); 39598943Sluigi for (i = F_LEN((ipfw_insn *)cmd) - 1; i > 0; i--, p += 2) { 39698943Sluigi printf(sep); 39798943Sluigi print_port(proto, p[0]); 39898943Sluigi if (p[0] != p[1]) { 39998943Sluigi printf("-"); 40098943Sluigi print_port(proto, p[1]); 40198943Sluigi } 40298943Sluigi sep = ","; 40398943Sluigi } 40498943Sluigi} 40598943Sluigi 40698943Sluigi/* 40798943Sluigi * Like strtol, but also translates service names into port numbers 40898943Sluigi * for some protocols. 40998943Sluigi * In particular: 41098943Sluigi * proto == -1 disables the protocol check; 41198943Sluigi * proto == IPPROTO_ETHERTYPE looks up an internal table 41298943Sluigi * proto == <some value in /etc/protocols> matches the values there. 41398943Sluigi */ 41498943Sluigistatic int 41598943Sluigistrtoport(char *s, char **end, int base, int proto) 41698943Sluigi{ 41798943Sluigi char *s1, sep; 41898943Sluigi int i; 41998943Sluigi 42098943Sluigi if ( *s == '\0') 42198943Sluigi goto none; 42298943Sluigi 42398943Sluigi if (isdigit(*s)) 42498943Sluigi return strtol(s, end, base); 42598943Sluigi 42698943Sluigi /* 42798943Sluigi * find separator and replace with a '\0' 42898943Sluigi */ 42998943Sluigi for (s1 = s; *s1 && isalnum(*s1) ; s1++) 43098943Sluigi ; 43198943Sluigi sep = *s1; 43298943Sluigi *s1 = '\0'; 43398943Sluigi 43498943Sluigi if (proto == IPPROTO_ETHERTYPE) { 43598943Sluigi i = match_token(ether_types, s); 43698943Sluigi *s1 = sep; 43798943Sluigi if (i == -1) { /* not found */ 43898943Sluigi *end = s; 43998943Sluigi return 0; 44098943Sluigi } else { 44198943Sluigi *end = s1; 44298943Sluigi return i; 44398943Sluigi } 44498943Sluigi } else { 44598943Sluigi struct protoent *pe = NULL; 44698943Sluigi struct servent *se; 44798943Sluigi 44898943Sluigi if (proto != 0) 44998943Sluigi pe = getprotobynumber(proto); 45098943Sluigi setservent(1); 45198943Sluigi se = getservbyname(s, pe ? pe->p_name : NULL); 45298943Sluigi *s1 = sep; 45398943Sluigi if (se != NULL) { 45498943Sluigi *end = s1; 45598943Sluigi return ntohs(se->s_port); 45698943Sluigi } 45798943Sluigi } 45898943Sluiginone: 45998943Sluigi *end = s; 46098943Sluigi return 0; 46198943Sluigi} 46298943Sluigi 46398943Sluigi/* 46498943Sluigi * fill the body of the command with the list of port ranges. 46598943Sluigi * At the moment it only understands numeric ranges. 46698943Sluigi */ 46798943Sluigistatic int 46898943Sluigifill_newports(ipfw_insn_u16 *cmd, char *av, int proto) 46998943Sluigi{ 47098943Sluigi u_int16_t *p = cmd->ports; 47198943Sluigi int i = 0; 47298943Sluigi 47398943Sluigi for (; *av ; i++, p +=2 ) { 47498943Sluigi u_int16_t a, b; 47598943Sluigi char *s; 47698943Sluigi 47798943Sluigi a = strtoport(av, &s, 0, proto); 47898943Sluigi if (s == av) /* no parameter */ 47998943Sluigi break; 48098943Sluigi if (*s == '-') { /* a range */ 48198943Sluigi av = s+1; 48298943Sluigi b = strtoport(av, &s, 0, proto); 48398943Sluigi if (s == av) /* no parameter */ 48498943Sluigi break; 48598943Sluigi p[0] = a; 48698943Sluigi p[1] = b; 48798943Sluigi } else if (*s == ',' || *s == '\0' ) { 48898943Sluigi p[0] = p[1] = a; 48998943Sluigi } else /* invalid separator */ 49098943Sluigi break; 49198943Sluigi av = s+1; 49298943Sluigi } 49398943Sluigi if (i > 0) { 49498943Sluigi if (i+1 > F_LEN_MASK) 49598943Sluigi errx(EX_DATAERR, "too many port range\n"); 49698943Sluigi cmd->o.len |= i+1; /* leave F_NOT and F_OR untouched */ 49798943Sluigi } 49898943Sluigi return i; 49998943Sluigi} 50098943Sluigi 50198943Sluigistatic struct _s_x icmpcodes[] = { 50298943Sluigi { "net", ICMP_UNREACH_NET }, 50398943Sluigi { "host", ICMP_UNREACH_HOST }, 50498943Sluigi { "protocol", ICMP_UNREACH_PROTOCOL }, 50598943Sluigi { "port", ICMP_UNREACH_PORT }, 50698943Sluigi { "needfrag", ICMP_UNREACH_NEEDFRAG }, 50798943Sluigi { "srcfail", ICMP_UNREACH_SRCFAIL }, 50898943Sluigi { "net-unknown", ICMP_UNREACH_NET_UNKNOWN }, 50998943Sluigi { "host-unknown", ICMP_UNREACH_HOST_UNKNOWN }, 51098943Sluigi { "isolated", ICMP_UNREACH_ISOLATED }, 51198943Sluigi { "net-prohib", ICMP_UNREACH_NET_PROHIB }, 51298943Sluigi { "host-prohib", ICMP_UNREACH_HOST_PROHIB }, 51398943Sluigi { "tosnet", ICMP_UNREACH_TOSNET }, 51498943Sluigi { "toshost", ICMP_UNREACH_TOSHOST }, 51598943Sluigi { "filter-prohib", ICMP_UNREACH_FILTER_PROHIB }, 51698943Sluigi { "host-precedence", ICMP_UNREACH_HOST_PRECEDENCE }, 51798943Sluigi { "precedence-cutoff", ICMP_UNREACH_PRECEDENCE_CUTOFF }, 51898943Sluigi { NULL, 0 } 51998943Sluigi}; 52098943Sluigi 52198943Sluigistatic void 52298943Sluigifill_reject_code(u_short *codep, char *str) 52398943Sluigi{ 52498943Sluigi int val; 52598943Sluigi char *s; 52698943Sluigi 52798943Sluigi val = strtoul(str, &s, 0); 52898943Sluigi if (s == str || *s != '\0' || val >= 0x100) 52998943Sluigi val = match_token(icmpcodes, str); 53098943Sluigi if (val <= 0) 53198943Sluigi errx(EX_DATAERR, "unknown ICMP unreachable code ``%s''", str); 53298943Sluigi *codep = val; 53398943Sluigi return; 53498943Sluigi} 53598943Sluigi 53698943Sluigistatic void 53799475Sluigiprint_reject_code(u_int16_t code) 53898943Sluigi{ 53998943Sluigi char *s = match_value(icmpcodes, code); 54098943Sluigi 54198943Sluigi if (s != NULL) 54299475Sluigi printf("unreach %s", s); 54398943Sluigi else 54499475Sluigi printf("unreach %u", code); 54598943Sluigi} 54698943Sluigi 54798943Sluigi/* 54898943Sluigi * Returns the number of bits set (from left) in a contiguous bitmask, 54998943Sluigi * or -1 if the mask is not contiguous. 55098943Sluigi * XXX this needs a proper fix. 55198943Sluigi * This effectively works on masks in big-endian (network) format. 55298943Sluigi * when compiled on little endian architectures. 55398943Sluigi * 55498943Sluigi * First bit is bit 7 of the first byte -- note, for MAC addresses, 55598943Sluigi * the first bit on the wire is bit 0 of the first byte. 55698943Sluigi * len is the max length in bits. 55798943Sluigi */ 55898943Sluigistatic int 55998943Sluigicontigmask(u_char *p, int len) 56098943Sluigi{ 56198943Sluigi int i, n; 56298943Sluigi for (i=0; i<len ; i++) 56398943Sluigi if ( (p[i/8] & (1 << (7 - (i%8)))) == 0) /* first bit unset */ 56498943Sluigi break; 56598943Sluigi for (n=i+1; n < len; n++) 56698943Sluigi if ( (p[n/8] & (1 << (7 - (n%8)))) != 0) 56798943Sluigi return -1; /* mask not contiguous */ 56898943Sluigi return i; 56998943Sluigi} 57098943Sluigi 57198943Sluigi/* 57298943Sluigi * print flags set/clear in the two bitmasks passed as parameters. 57398943Sluigi * There is a specialized check for f_tcpflags. 57498943Sluigi */ 57598943Sluigistatic void 57698943Sluigiprint_flags(char *name, ipfw_insn *cmd, struct _s_x *list) 57798943Sluigi{ 57898943Sluigi char *comma=""; 57998943Sluigi int i; 58098943Sluigi u_char set = cmd->arg1 & 0xff; 58198943Sluigi u_char clear = (cmd->arg1 >> 8) & 0xff; 58298943Sluigi 58398943Sluigi if (list == f_tcpflags && set == TH_SYN && clear == TH_ACK) { 58498943Sluigi printf(" setup"); 58598943Sluigi return; 58698943Sluigi } 58798943Sluigi 58898943Sluigi printf(" %s ", name); 58998943Sluigi for (i=0; list[i].x != 0; i++) { 59098943Sluigi if (set & list[i].x) { 59198943Sluigi set &= ~list[i].x; 59298943Sluigi printf("%s%s", comma, list[i].s); 59398943Sluigi comma = ","; 59498943Sluigi } 59598943Sluigi if (clear & list[i].x) { 59698943Sluigi clear &= ~list[i].x; 59798943Sluigi printf("%s!%s", comma, list[i].s); 59898943Sluigi comma = ","; 59998943Sluigi } 60098943Sluigi } 60198943Sluigi} 60298943Sluigi 60398943Sluigi/* 60498943Sluigi * Print the ip address contained in a command. 60598943Sluigi */ 60698943Sluigistatic void 60798943Sluigiprint_ip(ipfw_insn_ip *cmd) 60898943Sluigi{ 60998943Sluigi struct hostent *he = NULL; 61098943Sluigi int mb; 61198943Sluigi 61298943Sluigi printf("%s ", cmd->o.len & F_NOT ? " not": ""); 61398943Sluigi 61498943Sluigi if (cmd->o.opcode == O_IP_SRC_ME || cmd->o.opcode == O_IP_DST_ME) { 61598943Sluigi printf("me"); 61698943Sluigi return; 61798943Sluigi } 61898943Sluigi if (cmd->o.opcode == O_IP_SRC_SET || cmd->o.opcode == O_IP_DST_SET) { 61998943Sluigi u_int32_t x, *d; 62098943Sluigi int i; 62198943Sluigi char comma = '{'; 62298943Sluigi 62398943Sluigi x = cmd->o.arg1 - 1; 62498943Sluigi x = htonl( ~x ); 62598943Sluigi cmd->addr.s_addr = htonl(cmd->addr.s_addr); 62698943Sluigi printf("%s/%d", inet_ntoa(cmd->addr), 62798943Sluigi contigmask((u_char *)&x, 32)); 62898943Sluigi x = cmd->addr.s_addr = htonl(cmd->addr.s_addr); 62998943Sluigi x &= 0xff; /* base */ 63098943Sluigi d = (u_int32_t *)&(cmd->mask); 63198943Sluigi for (i=0; i < cmd->o.arg1; i++) 63298943Sluigi if (d[ i/32] & (1<<(i & 31))) { 63398943Sluigi printf("%c%d", comma, i+x); 63498943Sluigi comma = ','; 63598943Sluigi } 63698943Sluigi printf("}"); 63798943Sluigi return; 63898943Sluigi } 63998943Sluigi if (cmd->o.opcode == O_IP_SRC || cmd->o.opcode == O_IP_DST) 64098943Sluigi mb = 32; 64198943Sluigi else 64298943Sluigi mb = contigmask((u_char *)&(cmd->mask.s_addr), 32); 64398943Sluigi if (mb == 32 && do_resolv) 64498943Sluigi he = gethostbyaddr((char *)&(cmd->addr.s_addr), 64598943Sluigi sizeof(u_long), AF_INET); 64698943Sluigi if (he != NULL) /* resolved to name */ 64798943Sluigi printf("%s", he->h_name); 64898943Sluigi else if (mb == 0) /* any */ 64998943Sluigi printf("any"); 65098943Sluigi else { /* numeric IP followed by some kind of mask */ 65198943Sluigi printf("%s", inet_ntoa(cmd->addr)); 65298943Sluigi if (mb < 0) 65398943Sluigi printf(":%s", inet_ntoa(cmd->mask)); 65498943Sluigi else if (mb < 32) 65598943Sluigi printf("/%d", mb); 65698943Sluigi } 65798943Sluigi} 65898943Sluigi 65998943Sluigi/* 66098943Sluigi * prints a MAC address/mask pair 66198943Sluigi */ 66298943Sluigistatic void 66398943Sluigiprint_mac(u_char *addr, u_char *mask) 66498943Sluigi{ 66598943Sluigi int l = contigmask(mask, 48); 66698943Sluigi 66798943Sluigi if (l == 0) 66898943Sluigi printf(" any"); 66998943Sluigi else { 67098943Sluigi printf(" %02x:%02x:%02x:%02x:%02x:%02x", 67198943Sluigi addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 67298943Sluigi if (l == -1) 67398943Sluigi printf("&%02x:%02x:%02x:%02x:%02x:%02x", 67498943Sluigi mask[0], mask[1], mask[2], 67598943Sluigi mask[3], mask[4], mask[5]); 67698943Sluigi else if (l < 48) 67798943Sluigi printf("/%d", l); 67898943Sluigi } 67998943Sluigi} 68098943Sluigi 68199475Sluigistatic void 68299475Sluigifill_icmptypes(ipfw_insn_u32 *cmd, char *av) 68399475Sluigi{ 68499475Sluigi u_int8_t type; 68598943Sluigi 68699475Sluigi cmd->d[0] = 0; 68799475Sluigi while (*av) { 68899475Sluigi if (*av == ',') 68999475Sluigi av++; 69099475Sluigi 69199475Sluigi type = strtoul(av, &av, 0); 69299475Sluigi 69399475Sluigi if (*av != ',' && *av != '\0') 69499475Sluigi errx(EX_DATAERR, "invalid ICMP type"); 69599475Sluigi 69699475Sluigi if (type > 31) 69799475Sluigi errx(EX_DATAERR, "ICMP type out of range"); 69899475Sluigi 69999475Sluigi cmd->d[0] |= 1 << type; 70099475Sluigi } 70199475Sluigi cmd->o.opcode = O_ICMPTYPE; 70299475Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 70399475Sluigi} 70499475Sluigi 70599475Sluigistatic void 70699475Sluigiprint_icmptypes(ipfw_insn_u32 *cmd) 70799475Sluigi{ 70899475Sluigi int i; 70999475Sluigi char sep= ' '; 71099475Sluigi 71199475Sluigi printf(" icmptypes"); 71299475Sluigi for (i = 0; i < 32; i++) { 71399475Sluigi if ( (cmd->d[0] & (1 << (i))) == 0) 71499475Sluigi continue; 71599475Sluigi printf("%c%d", sep, i); 71699475Sluigi sep = ','; 71799475Sluigi } 71899475Sluigi} 71999475Sluigi 72098943Sluigi/* 72198943Sluigi * show_ipfw() prints the body of an ipfw rule. 72298943Sluigi * Because the standard rule has at least proto src_ip dst_ip, we use 72398943Sluigi * a helper function to produce these entries if not provided explicitly. 72498943Sluigi */ 72598943Sluigi#define HAVE_PROTO 1 72698943Sluigi#define HAVE_SRCIP 2 72798943Sluigi#define HAVE_DSTIP 4 72898943Sluigi#define HAVE_MAC 8 72998943Sluigi 73098943Sluigistatic void 73198943Sluigishow_prerequisites(int *flags, int want) 73298943Sluigi{ 73398943Sluigi if ( !(*flags & HAVE_PROTO) && (want & HAVE_PROTO)) 73498943Sluigi printf(" ip"); 73598943Sluigi if ( !(*flags & HAVE_SRCIP) && (want & HAVE_SRCIP)) 73698943Sluigi printf(" from any"); 73798943Sluigi if ( !(*flags & HAVE_DSTIP) && (want & HAVE_DSTIP)) 73898943Sluigi printf(" to any"); 73998943Sluigi *flags |= want; 74098943Sluigi} 74198943Sluigi 74298943Sluigistatic void 74398943Sluigishow_ipfw(struct ip_fw *rule) 74498943Sluigi{ 74598943Sluigi int l; 74698943Sluigi ipfw_insn *cmd; 74798943Sluigi int proto = 0; /* default */ 74898943Sluigi int flags = 0; /* prerequisites */ 74998943Sluigi ipfw_insn_log *logptr = NULL; /* set if we find an O_LOG */ 75098943Sluigi int or_block = 0; /* we are in an or block */ 75198943Sluigi 75298943Sluigi printf("%05u ", rule->rulenum); 75398943Sluigi 75498943Sluigi if (do_acct) 75598943Sluigi printf("%10qu %10qu ", rule->pcnt, rule->bcnt); 75698943Sluigi 75798943Sluigi if (do_time) { 75898943Sluigi if (rule->timestamp) { 75998943Sluigi char timestr[30]; 76098943Sluigi time_t t = _long_to_time(rule->timestamp); 76198943Sluigi 76298943Sluigi strcpy(timestr, ctime(&t)); 76398943Sluigi *strchr(timestr, '\n') = '\0'; 76498943Sluigi printf("%s ", timestr); 76598943Sluigi } else { 76698943Sluigi printf(" "); 76798943Sluigi } 76898943Sluigi } 76998943Sluigi 77098943Sluigi /* 77198943Sluigi * first print actions 77298943Sluigi */ 77398943Sluigi for (l = rule->cmd_len - rule->act_ofs, cmd = ACTION_PTR(rule); 77498943Sluigi l > 0 ; l -= F_LEN(cmd), cmd += F_LEN(cmd)) { 77598943Sluigi switch(cmd->opcode) { 77698943Sluigi case O_CHECK_STATE: 77798943Sluigi printf("check-state"); 77898943Sluigi /* avoid printing anything else */ 77998943Sluigi flags = HAVE_PROTO|HAVE_SRCIP|HAVE_DSTIP; 78098943Sluigi break; 78198943Sluigi 78298943Sluigi case O_PROB: 78398943Sluigi { 78498943Sluigi ipfw_insn_u32 *p = (ipfw_insn_u32 *)cmd; 78598943Sluigi double d = 1.0 * p->d[0]; 78698943Sluigi 78798943Sluigi d = 1 - (d / 0x7fffffff); 78898943Sluigi printf("prob %f ", d); 78998943Sluigi } 79098943Sluigi break; 79198943Sluigi 79298943Sluigi case O_ACCEPT: 79398943Sluigi printf("allow"); 79498943Sluigi break; 79598943Sluigi 79698943Sluigi case O_COUNT: 79798943Sluigi printf("count"); 79898943Sluigi break; 79998943Sluigi 80098943Sluigi case O_DENY: 80198943Sluigi printf("deny"); 80298943Sluigi break; 80398943Sluigi 80499475Sluigi case O_REJECT: 80599475Sluigi if (cmd->arg1 == ICMP_REJECT_RST) 80699475Sluigi printf("reset"); 80799475Sluigi else if (cmd->arg1 == ICMP_UNREACH_HOST) 80899475Sluigi printf("reject"); 80999475Sluigi else 81099475Sluigi print_reject_code(cmd->arg1); 81199475Sluigi break; 81299475Sluigi 81398943Sluigi case O_SKIPTO: 81498943Sluigi printf("skipto %u", cmd->arg1); 81598943Sluigi break; 81698943Sluigi 81798943Sluigi case O_PIPE: 81898943Sluigi printf("pipe %u", cmd->arg1); 81998943Sluigi break; 82098943Sluigi 82198943Sluigi case O_QUEUE: 82298943Sluigi printf("queue %u", cmd->arg1); 82398943Sluigi break; 82498943Sluigi 82598943Sluigi case O_DIVERT: 82698943Sluigi printf("divert %u", cmd->arg1); 82798943Sluigi break; 82898943Sluigi 82998943Sluigi case O_TEE: 83098943Sluigi printf("tee %u", cmd->arg1); 83198943Sluigi break; 83298943Sluigi 83398943Sluigi case O_FORWARD_IP: 83498943Sluigi { 83598943Sluigi ipfw_insn_sa *s = (ipfw_insn_sa *)cmd; 83698943Sluigi 83798943Sluigi printf("fwd %s", inet_ntoa(s->sa.sin_addr)); 83898943Sluigi if (s->sa.sin_port) 83998943Sluigi printf(",%d", ntohs(s->sa.sin_port)); 84098943Sluigi } 84198943Sluigi break; 84298943Sluigi 84398943Sluigi case O_LOG: /* O_LOG is printed last */ 84498943Sluigi logptr = (ipfw_insn_log *)cmd; 84598943Sluigi break; 84698943Sluigi 84798943Sluigi default: 84898943Sluigi printf("** unrecognized action %d len %d", 84998943Sluigi cmd->opcode, cmd->len); 85098943Sluigi } 85198943Sluigi } 85298943Sluigi if (logptr) { 85398943Sluigi if (logptr->max_log > 0) 85499909Sluigi printf(" log logamount %d", logptr->max_log); 85598943Sluigi else 85699909Sluigi printf(" log"); 85798943Sluigi } 85898943Sluigi /* 85998943Sluigi * then print the body 86098943Sluigi */ 86198943Sluigi for (l = rule->act_ofs, cmd = rule->cmd ; 86298943Sluigi l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 86399475Sluigi /* useful alias */ 86499475Sluigi ipfw_insn_u32 *cmd32 = (ipfw_insn_u32 *)cmd; 86598943Sluigi 86698943Sluigi switch(cmd->opcode) { 86798943Sluigi case O_PROBE_STATE: 86898943Sluigi break; /* no need to print anything here */ 86998943Sluigi 87098943Sluigi case O_MACADDR2: { 87198943Sluigi ipfw_insn_mac *m = (ipfw_insn_mac *)cmd; 87298943Sluigi if ( (flags & HAVE_MAC) == 0) 87398943Sluigi printf(" MAC"); 87498943Sluigi flags |= HAVE_MAC; 87598943Sluigi if (cmd->len & F_NOT) 87698943Sluigi printf(" not"); 87798943Sluigi print_mac( m->addr, m->mask); 87898943Sluigi print_mac( m->addr + 6, m->mask + 6); 87998943Sluigi } 88098943Sluigi break; 88198943Sluigi 88298943Sluigi case O_MAC_TYPE: 88398943Sluigi print_newports((ipfw_insn_u16 *)cmd, IPPROTO_ETHERTYPE); 88498943Sluigi break; 88598943Sluigi 88698943Sluigi case O_IP_SRC: 88798943Sluigi case O_IP_SRC_MASK: 88898943Sluigi case O_IP_SRC_ME: 88998943Sluigi case O_IP_SRC_SET: 89098943Sluigi show_prerequisites(&flags, HAVE_PROTO); 89198943Sluigi if (!(flags & HAVE_SRCIP)) 89298943Sluigi printf(" from"); 89398943Sluigi if ((cmd->len & F_OR) && !or_block) 89498943Sluigi printf(" {"); 89598943Sluigi print_ip((ipfw_insn_ip *)cmd); 89698943Sluigi flags |= HAVE_SRCIP; 89798943Sluigi break; 89898943Sluigi 89998943Sluigi case O_IP_DST: 90098943Sluigi case O_IP_DST_MASK: 90198943Sluigi case O_IP_DST_ME: 90298943Sluigi case O_IP_DST_SET: 90398943Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP); 90498943Sluigi if (!(flags & HAVE_DSTIP)) 90598943Sluigi printf(" to"); 90698943Sluigi if ((cmd->len & F_OR) && !or_block) 90798943Sluigi printf(" {"); 90898943Sluigi print_ip((ipfw_insn_ip *)cmd); 90998943Sluigi flags |= HAVE_DSTIP; 91098943Sluigi break; 91198943Sluigi 91298943Sluigi case O_IP_DSTPORT: 91398943Sluigi show_prerequisites(&flags, 91498943Sluigi HAVE_PROTO|HAVE_SRCIP|HAVE_DSTIP); 91598943Sluigi case O_IP_SRCPORT: 91698943Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP); 91798943Sluigi print_newports((ipfw_insn_u16 *)cmd, proto); 91898943Sluigi break; 91998943Sluigi 92098943Sluigi case O_PROTO: { 92198943Sluigi struct protoent *pe; 92298943Sluigi 92398943Sluigi if ((cmd->len & F_OR) && !or_block) 92498943Sluigi printf(" {"); 92598943Sluigi if (cmd->len & F_NOT) 92698943Sluigi printf(" not"); 92798943Sluigi proto = cmd->arg1; 92898943Sluigi pe = getprotobynumber(cmd->arg1); 92998943Sluigi if (pe) 93098943Sluigi printf(" %s", pe->p_name); 93198943Sluigi else 93298943Sluigi printf(" %u", cmd->arg1); 93398943Sluigi } 93498943Sluigi flags |= HAVE_PROTO; 93598943Sluigi break; 93698943Sluigi 93798943Sluigi default: /*options ... */ 93898943Sluigi show_prerequisites(&flags, 93998943Sluigi HAVE_PROTO|HAVE_SRCIP|HAVE_DSTIP); 94098943Sluigi if ((cmd->len & F_OR) && !or_block) 94198943Sluigi printf(" {"); 94298943Sluigi if (cmd->len & F_NOT && cmd->opcode != O_IN) 94398943Sluigi printf(" not"); 94498943Sluigi switch(cmd->opcode) { 94598943Sluigi case O_FRAG: 94698943Sluigi printf(" frag"); 94798943Sluigi break; 94898943Sluigi 94998943Sluigi case O_IN: 95098943Sluigi printf(cmd->len & F_NOT ? " out" : " in"); 95198943Sluigi break; 95298943Sluigi 95398943Sluigi case O_LAYER2: 95498943Sluigi printf(" layer2"); 95598943Sluigi break; 95698943Sluigi case O_XMIT: 95798943Sluigi case O_RECV: 95898943Sluigi case O_VIA: { 95998943Sluigi char *s; 96098943Sluigi ipfw_insn_if *cmdif = (ipfw_insn_if *)cmd; 96198943Sluigi 96298943Sluigi if (cmd->opcode == O_XMIT) 96398943Sluigi s = "xmit"; 96498943Sluigi else if (cmd->opcode == O_RECV) 96598943Sluigi s = "recv"; 96698943Sluigi else if (cmd->opcode == O_VIA) 96798943Sluigi s = "via"; 96898943Sluigi if (cmdif->name[0] == '\0') 96999475Sluigi printf(" %s %s", s, 97099475Sluigi inet_ntoa(cmdif->p.ip)); 97198943Sluigi else if (cmdif->p.unit == -1) 97298943Sluigi printf(" %s %s*", s, cmdif->name); 97398943Sluigi else 97499475Sluigi printf(" %s %s%d", s, cmdif->name, 97599475Sluigi cmdif->p.unit); 97698943Sluigi } 97798943Sluigi break; 97898943Sluigi 97998943Sluigi case O_IPID: 98098943Sluigi printf(" ipid %u", cmd->arg1 ); 98198943Sluigi break; 98298943Sluigi 98398943Sluigi case O_IPTTL: 98498943Sluigi printf(" ipttl %u", cmd->arg1 ); 98598943Sluigi break; 98698943Sluigi 98798943Sluigi case O_IPVER: 98898943Sluigi printf(" ipver %u", cmd->arg1 ); 98998943Sluigi break; 99098943Sluigi 99199475Sluigi case O_IPPRECEDENCE: 99299475Sluigi printf(" ipprecedence %u", (cmd->arg1) >> 5 ); 99399475Sluigi break; 99499475Sluigi 99598943Sluigi case O_IPLEN: 99698943Sluigi printf(" iplen %u", cmd->arg1 ); 99798943Sluigi break; 99898943Sluigi 999101116Sluigi case O_IPOPT: 100098943Sluigi print_flags("ipoptions", cmd, f_ipopts); 100198943Sluigi break; 100298943Sluigi 100399475Sluigi case O_IPTOS: 100499475Sluigi print_flags("iptos", cmd, f_iptos); 100599475Sluigi break; 100699475Sluigi 100799475Sluigi case O_ICMPTYPE: 100899475Sluigi print_icmptypes((ipfw_insn_u32 *)cmd); 100999475Sluigi break; 101099475Sluigi 101198943Sluigi case O_ESTAB: 101298943Sluigi printf(" established"); 101398943Sluigi break; 101498943Sluigi 101598943Sluigi case O_TCPFLAGS: 101698943Sluigi print_flags("tcpflags", cmd, f_tcpflags); 101798943Sluigi break; 101898943Sluigi 101998943Sluigi case O_TCPOPTS: 102098943Sluigi print_flags("tcpoptions", cmd, f_tcpopts); 102198943Sluigi break; 102298943Sluigi 102398943Sluigi case O_TCPWIN: 102498943Sluigi printf(" tcpwin %d", ntohs(cmd->arg1)); 102598943Sluigi break; 102698943Sluigi 102798943Sluigi case O_TCPACK: 102898943Sluigi printf(" tcpack %d", ntohl(cmd32->d[0])); 102998943Sluigi break; 103098943Sluigi 103198943Sluigi case O_TCPSEQ: 103298943Sluigi printf(" tcpseq %d", ntohl(cmd32->d[0])); 103398943Sluigi break; 103498943Sluigi 103598943Sluigi case O_UID: 103698943Sluigi { 103798943Sluigi struct passwd *pwd = getpwuid(cmd32->d[0]); 103898943Sluigi 103998943Sluigi if (pwd) 104098943Sluigi printf(" uid %s", pwd->pw_name); 104198943Sluigi else 104298943Sluigi printf(" uid %u", cmd32->d[0]); 104398943Sluigi } 104498943Sluigi break; 104598943Sluigi 104698943Sluigi case O_GID: 104798943Sluigi { 104898943Sluigi struct group *grp = getgrgid(cmd32->d[0]); 104998943Sluigi 105098943Sluigi if (grp) 105198943Sluigi printf(" gid %s", grp->gr_name); 105298943Sluigi else 105398943Sluigi printf(" gid %u", cmd32->d[0]); 105498943Sluigi } 105598943Sluigi break; 105698943Sluigi 105798943Sluigi case O_KEEP_STATE: 105898943Sluigi printf(" keep-state"); 105998943Sluigi break; 106098943Sluigi 106198943Sluigi case O_LIMIT: 106298943Sluigi { 106398943Sluigi struct _s_x *p = limit_masks; 106498943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 106598943Sluigi u_int8_t x = c->limit_mask; 106698943Sluigi char *comma = " "; 106798943Sluigi 106898943Sluigi printf(" limit"); 106998943Sluigi for ( ; p->x != 0 ; p++) 107099909Sluigi if ((x & p->x) == p->x) { 107198943Sluigi x &= ~p->x; 107298943Sluigi printf("%s%s", comma, p->s); 107398943Sluigi comma = ","; 107498943Sluigi } 107598943Sluigi printf(" %d", c->conn_limit); 107698943Sluigi } 107798943Sluigi break; 107898943Sluigi 107998943Sluigi default: 108098943Sluigi printf(" [opcode %d len %d]", 108198943Sluigi cmd->opcode, cmd->len); 108298943Sluigi } 108398943Sluigi } 108498943Sluigi if (cmd->len & F_OR) { 108598943Sluigi printf(" or"); 108698943Sluigi or_block = 1; 108798943Sluigi } else if (or_block) { 108898943Sluigi printf(" }"); 108998943Sluigi or_block = 0; 109098943Sluigi } 109198943Sluigi } 109298943Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP|HAVE_DSTIP); 109398943Sluigi 109498943Sluigi printf("\n"); 109598943Sluigi} 109698943Sluigi 109798943Sluigistatic void 109898943Sluigishow_dyn_ipfw(ipfw_dyn_rule *d) 109998943Sluigi{ 110098943Sluigi struct protoent *pe; 110198943Sluigi struct in_addr a; 110298943Sluigi 110398943Sluigi if (!do_expired) { 110498943Sluigi if (!d->expire && !(d->dyn_type == O_LIMIT_PARENT)) 110598943Sluigi return; 110698943Sluigi } 110798943Sluigi 110898943Sluigi printf("%05d %10qu %10qu (%ds)", 110998943Sluigi (int)(d->rule), d->pcnt, d->bcnt, d->expire); 111098943Sluigi switch (d->dyn_type) { 111198943Sluigi case O_LIMIT_PARENT: 111298943Sluigi printf(" PARENT %d", d->count); 111398943Sluigi break; 111498943Sluigi case O_LIMIT: 111598943Sluigi printf(" LIMIT"); 111698943Sluigi break; 111798943Sluigi case O_KEEP_STATE: /* bidir, no mask */ 111898943Sluigi printf(" STATE"); 111998943Sluigi break; 112098943Sluigi } 112198943Sluigi 112298943Sluigi if ((pe = getprotobynumber(d->id.proto)) != NULL) 112398943Sluigi printf(" %s", pe->p_name); 112498943Sluigi else 112598943Sluigi printf(" proto %u", d->id.proto); 112698943Sluigi 112798943Sluigi a.s_addr = htonl(d->id.src_ip); 112898943Sluigi printf(" %s %d", inet_ntoa(a), d->id.src_port); 112998943Sluigi 113098943Sluigi a.s_addr = htonl(d->id.dst_ip); 113198943Sluigi printf(" <-> %s %d", inet_ntoa(a), d->id.dst_port); 113298943Sluigi printf("\n"); 113398943Sluigi} 113498943Sluigi 113598943Sluigiint 113698943Sluigisort_q(const void *pa, const void *pb) 113798943Sluigi{ 113898943Sluigi int rev = (do_sort < 0); 113998943Sluigi int field = rev ? -do_sort : do_sort; 114098943Sluigi long long res = 0; 114198943Sluigi const struct dn_flow_queue *a = pa; 114298943Sluigi const struct dn_flow_queue *b = pb; 114398943Sluigi 114498943Sluigi switch (field) { 114598943Sluigi case 1: /* pkts */ 114698943Sluigi res = a->len - b->len; 114798943Sluigi break; 114898943Sluigi case 2: /* bytes */ 114998943Sluigi res = a->len_bytes - b->len_bytes; 115098943Sluigi break; 115198943Sluigi 115298943Sluigi case 3: /* tot pkts */ 115398943Sluigi res = a->tot_pkts - b->tot_pkts; 115498943Sluigi break; 115598943Sluigi 115698943Sluigi case 4: /* tot bytes */ 115798943Sluigi res = a->tot_bytes - b->tot_bytes; 115898943Sluigi break; 115998943Sluigi } 116098943Sluigi if (res < 0) 116198943Sluigi res = -1; 116298943Sluigi if (res > 0) 116398943Sluigi res = 1; 116498943Sluigi return (int)(rev ? res : -res); 116598943Sluigi} 116698943Sluigi 116798943Sluigistatic void 116898943Sluigilist_queues(struct dn_flow_set *fs, struct dn_flow_queue *q) 116998943Sluigi{ 117098943Sluigi int l; 117198943Sluigi 117298943Sluigi printf(" mask: 0x%02x 0x%08x/0x%04x -> 0x%08x/0x%04x\n", 117398943Sluigi fs->flow_mask.proto, 117498943Sluigi fs->flow_mask.src_ip, fs->flow_mask.src_port, 117598943Sluigi fs->flow_mask.dst_ip, fs->flow_mask.dst_port); 117698943Sluigi if (fs->rq_elements == 0) 117798943Sluigi return; 117898943Sluigi 117998943Sluigi printf("BKT Prot ___Source IP/port____ " 118098943Sluigi "____Dest. IP/port____ Tot_pkt/bytes Pkt/Byte Drp\n"); 118198943Sluigi if (do_sort != 0) 118298943Sluigi heapsort(q, fs->rq_elements, sizeof *q, sort_q); 118398943Sluigi for (l = 0; l < fs->rq_elements; l++) { 118498943Sluigi struct in_addr ina; 118598943Sluigi struct protoent *pe; 118698943Sluigi 118798943Sluigi ina.s_addr = htonl(q[l].id.src_ip); 118898943Sluigi printf("%3d ", q[l].hash_slot); 118998943Sluigi pe = getprotobynumber(q[l].id.proto); 119098943Sluigi if (pe) 119198943Sluigi printf("%-4s ", pe->p_name); 119298943Sluigi else 119398943Sluigi printf("%4u ", q[l].id.proto); 119498943Sluigi printf("%15s/%-5d ", 119598943Sluigi inet_ntoa(ina), q[l].id.src_port); 119698943Sluigi ina.s_addr = htonl(q[l].id.dst_ip); 119798943Sluigi printf("%15s/%-5d ", 119898943Sluigi inet_ntoa(ina), q[l].id.dst_port); 119998943Sluigi printf("%4qu %8qu %2u %4u %3u\n", 120098943Sluigi q[l].tot_pkts, q[l].tot_bytes, 120198943Sluigi q[l].len, q[l].len_bytes, q[l].drops); 120298943Sluigi if (verbose) 120398943Sluigi printf(" S %20qd F %20qd\n", 120498943Sluigi q[l].S, q[l].F); 120598943Sluigi } 120698943Sluigi} 120798943Sluigi 120898943Sluigistatic void 120998943Sluigiprint_flowset_parms(struct dn_flow_set *fs, char *prefix) 121098943Sluigi{ 121198943Sluigi int l; 121298943Sluigi char qs[30]; 121398943Sluigi char plr[30]; 121498943Sluigi char red[90]; /* Display RED parameters */ 121598943Sluigi 121698943Sluigi l = fs->qsize; 121798943Sluigi if (fs->flags_fs & DN_QSIZE_IS_BYTES) { 121898943Sluigi if (l >= 8192) 121998943Sluigi sprintf(qs, "%d KB", l / 1024); 122098943Sluigi else 122198943Sluigi sprintf(qs, "%d B", l); 122298943Sluigi } else 122398943Sluigi sprintf(qs, "%3d sl.", l); 122498943Sluigi if (fs->plr) 122598943Sluigi sprintf(plr, "plr %f", 1.0 * fs->plr / (double)(0x7fffffff)); 122698943Sluigi else 122798943Sluigi plr[0] = '\0'; 122898943Sluigi if (fs->flags_fs & DN_IS_RED) /* RED parameters */ 122998943Sluigi sprintf(red, 123098943Sluigi "\n\t %cRED w_q %f min_th %d max_th %d max_p %f", 123198943Sluigi (fs->flags_fs & DN_IS_GENTLE_RED) ? 'G' : ' ', 123298943Sluigi 1.0 * fs->w_q / (double)(1 << SCALE_RED), 123398943Sluigi SCALE_VAL(fs->min_th), 123498943Sluigi SCALE_VAL(fs->max_th), 123598943Sluigi 1.0 * fs->max_p / (double)(1 << SCALE_RED)); 123698943Sluigi else 123798943Sluigi sprintf(red, "droptail"); 123898943Sluigi 123998943Sluigi printf("%s %s%s %d queues (%d buckets) %s\n", 124098943Sluigi prefix, qs, plr, fs->rq_elements, fs->rq_size, red); 124198943Sluigi} 124298943Sluigi 124398943Sluigistatic void 124498943Sluigilist_pipes(void *data, int nbytes, int ac, char *av[]) 124598943Sluigi{ 124698943Sluigi u_long rulenum; 124798943Sluigi void *next = data; 124898943Sluigi struct dn_pipe *p = (struct dn_pipe *) data; 124998943Sluigi struct dn_flow_set *fs; 125098943Sluigi struct dn_flow_queue *q; 125198943Sluigi int l; 125298943Sluigi 125398943Sluigi if (ac > 0) 125498943Sluigi rulenum = strtoul(*av++, NULL, 10); 125598943Sluigi else 125698943Sluigi rulenum = 0; 125798943Sluigi for (; nbytes >= sizeof *p; p = (struct dn_pipe *)next) { 125898943Sluigi double b = p->bandwidth; 125998943Sluigi char buf[30]; 126098943Sluigi char prefix[80]; 126198943Sluigi 126298943Sluigi if (p->next != (struct dn_pipe *)DN_IS_PIPE) 126398943Sluigi break; /* done with pipes, now queues */ 126498943Sluigi 126598943Sluigi /* 126698943Sluigi * compute length, as pipe have variable size 126798943Sluigi */ 126898943Sluigi l = sizeof(*p) + p->fs.rq_elements * sizeof(*q); 126998943Sluigi next = (void *)p + l; 127098943Sluigi nbytes -= l; 127198943Sluigi 127298943Sluigi if (rulenum != 0 && rulenum != p->pipe_nr) 127398943Sluigi continue; 127498943Sluigi 127598943Sluigi /* 127698943Sluigi * Print rate (or clocking interface) 127798943Sluigi */ 127898943Sluigi if (p->if_name[0] != '\0') 127998943Sluigi sprintf(buf, "%s", p->if_name); 128098943Sluigi else if (b == 0) 128198943Sluigi sprintf(buf, "unlimited"); 128298943Sluigi else if (b >= 1000000) 128398943Sluigi sprintf(buf, "%7.3f Mbit/s", b/1000000); 128498943Sluigi else if (b >= 1000) 128598943Sluigi sprintf(buf, "%7.3f Kbit/s", b/1000); 128698943Sluigi else 128798943Sluigi sprintf(buf, "%7.3f bit/s ", b); 128898943Sluigi 128998943Sluigi sprintf(prefix, "%05d: %s %4d ms ", 129098943Sluigi p->pipe_nr, buf, p->delay); 129198943Sluigi print_flowset_parms(&(p->fs), prefix); 129298943Sluigi if (verbose) 129398943Sluigi printf(" V %20qd\n", p->V >> MY_M); 129498943Sluigi 129598943Sluigi q = (struct dn_flow_queue *)(p+1); 129698943Sluigi list_queues(&(p->fs), q); 129798943Sluigi } 129898943Sluigi for (fs = next; nbytes >= sizeof *fs; fs = next) { 129998943Sluigi char prefix[80]; 130098943Sluigi 130198943Sluigi if (fs->next != (struct dn_flow_set *)DN_IS_QUEUE) 130298943Sluigi break; 130398943Sluigi l = sizeof(*fs) + fs->rq_elements * sizeof(*q); 130498943Sluigi next = (void *)fs + l; 130598943Sluigi nbytes -= l; 130698943Sluigi q = (struct dn_flow_queue *)(fs+1); 130798943Sluigi sprintf(prefix, "q%05d: weight %d pipe %d ", 130898943Sluigi fs->fs_nr, fs->weight, fs->parent_nr); 130998943Sluigi print_flowset_parms(fs, prefix); 131098943Sluigi list_queues(fs, q); 131198943Sluigi } 131298943Sluigi} 131398943Sluigi 131498943Sluigistatic void 131598943Sluigilist(int ac, char *av[]) 131698943Sluigi{ 131798943Sluigi struct ip_fw *r; 131898943Sluigi ipfw_dyn_rule *dynrules, *d; 131998943Sluigi 132098943Sluigi void *lim, *data = NULL; 132198943Sluigi int n, nbytes, nstat, ndyn; 132298943Sluigi int exitval = EX_OK; 132398943Sluigi int lac; 132498943Sluigi char **lav; 132598943Sluigi u_long rnum; 132698943Sluigi char *endptr; 132798943Sluigi int seen = 0; 132898943Sluigi 132998943Sluigi const int ocmd = do_pipe ? IP_DUMMYNET_GET : IP_FW_GET; 133098943Sluigi int nalloc = 1024; /* start somewhere... */ 133198943Sluigi 133298943Sluigi ac--; 133398943Sluigi av++; 133498943Sluigi 133598943Sluigi /* get rules or pipes from kernel, resizing array as necessary */ 133698943Sluigi nbytes = nalloc; 133798943Sluigi 133898943Sluigi while (nbytes >= nalloc) { 133998943Sluigi nalloc = nalloc * 2 + 200; 134098943Sluigi nbytes = nalloc; 134198943Sluigi if ((data = realloc(data, nbytes)) == NULL) 134298943Sluigi err(EX_OSERR, "realloc"); 134398943Sluigi if (getsockopt(s, IPPROTO_IP, ocmd, data, &nbytes) < 0) 134498943Sluigi err(EX_OSERR, "getsockopt(IP_%s_GET)", 134598943Sluigi do_pipe ? "DUMMYNET" : "FW"); 134698943Sluigi } 134798943Sluigi 134898943Sluigi if (do_pipe) { 134998943Sluigi list_pipes(data, nbytes, ac, av); 135098943Sluigi goto done; 135198943Sluigi } 135298943Sluigi 135398943Sluigi /* 135498943Sluigi * Count static rules. They have variable size so we 135598943Sluigi * need to scan the list to count them. 135698943Sluigi */ 135798943Sluigi for (nstat = 1, r = data, lim = data + nbytes; 135898943Sluigi r->rulenum < 65535 && (void *)r < lim; 135998943Sluigi ++nstat, r = (void *)r + RULESIZE(r) ) 136098943Sluigi ; /* nothing */ 136198943Sluigi 136298943Sluigi /* 136398943Sluigi * Count dynamic rules. This is easier as they have 136498943Sluigi * fixed size. 136598943Sluigi */ 136698943Sluigi r = (void *)r + RULESIZE(r); 136798943Sluigi dynrules = (ipfw_dyn_rule *)r ; 136898943Sluigi n = (void *)r - data; 136998943Sluigi ndyn = (nbytes - n) / sizeof *dynrules; 137098943Sluigi 137198943Sluigi /* if no rule numbers were specified, list all rules */ 137298943Sluigi if (ac == 0) { 137398943Sluigi for (n = 0, r = data; n < nstat; 137498943Sluigi n++, r = (void *)r + RULESIZE(r) ) 137598943Sluigi show_ipfw(r); 137698943Sluigi 137798943Sluigi if (do_dynamic && ndyn) { 137898943Sluigi printf("## Dynamic rules (%d):\n", ndyn); 137998943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) 138098943Sluigi show_dyn_ipfw(d); 138198943Sluigi } 138298943Sluigi goto done; 138398943Sluigi } 138498943Sluigi 138598943Sluigi /* display specific rules requested on command line */ 138698943Sluigi 138798943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 138898943Sluigi /* convert command line rule # */ 138998943Sluigi rnum = strtoul(*lav++, &endptr, 10); 139098943Sluigi if (*endptr) { 139198943Sluigi exitval = EX_USAGE; 139298943Sluigi warnx("invalid rule number: %s", *(lav - 1)); 139398943Sluigi continue; 139498943Sluigi } 139598943Sluigi for (n = seen = 0, r = data; n < nstat; 139698943Sluigi n++, r = (void *)r + RULESIZE(r) ) { 139798943Sluigi if (r->rulenum > rnum) 139898943Sluigi break; 139998943Sluigi if (r->rulenum == rnum) { 140098943Sluigi show_ipfw(r); 140198943Sluigi seen = 1; 140298943Sluigi } 140398943Sluigi } 140498943Sluigi if (!seen) { 140598943Sluigi /* give precedence to other error(s) */ 140698943Sluigi if (exitval == EX_OK) 140798943Sluigi exitval = EX_UNAVAILABLE; 140898943Sluigi warnx("rule %lu does not exist", rnum); 140998943Sluigi } 141098943Sluigi } 141198943Sluigi 141298943Sluigi if (do_dynamic && ndyn) { 141398943Sluigi printf("## Dynamic rules:\n"); 141498943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 141598943Sluigi rnum = strtoul(*lav++, &endptr, 10); 141698943Sluigi if (*endptr) 141798943Sluigi /* already warned */ 141898943Sluigi continue; 141998943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) { 142098943Sluigi if ((int)(d->rule) > rnum) 142198943Sluigi break; 142298943Sluigi if ((int)(d->rule) == rnum) 142398943Sluigi show_dyn_ipfw(d); 142498943Sluigi } 142598943Sluigi } 142698943Sluigi } 142798943Sluigi 142898943Sluigi ac = 0; 142998943Sluigi 143098943Sluigidone: 143198943Sluigi free(data); 143298943Sluigi 143398943Sluigi if (exitval != EX_OK) 143498943Sluigi exit(exitval); 143598943Sluigi} 143698943Sluigi 143798943Sluigistatic void 143898943Sluigishow_usage(void) 143998943Sluigi{ 144098943Sluigi fprintf(stderr, "usage: ipfw [options]\n" 144198943Sluigi" add [number] rule\n" 144298943Sluigi" pipe number config [pipeconfig]\n" 144398943Sluigi" queue number config [queueconfig]\n" 144498943Sluigi" [pipe] flush\n" 144598943Sluigi" [pipe] delete number ...\n" 144698943Sluigi" [pipe] {list|show} [number ...]\n" 144798943Sluigi" {zero|resetlog} [number ...]\n" 144898943Sluigi"do \"ipfw -h\" or see ipfw manpage for details\n" 144998943Sluigi); 145098943Sluigi 145198943Sluigi exit(EX_USAGE); 145298943Sluigi} 145398943Sluigi 145498943Sluigistatic void 145598943Sluigihelp(void) 145698943Sluigi{ 145798943Sluigi 145898943Sluigi fprintf(stderr, "ipfw syntax summary:\n" 145998943Sluigi"ipfw add [N] [prob {0..1}] ACTION [log [logamount N]] ADDR OPTIONS\n" 146098943Sluigi"ipfw {pipe|queue} N config BODY\n" 146198943Sluigi"ipfw [pipe] {zero|delete|show} [N{,N}]\n" 146298943Sluigi"\n" 146398943Sluigi"RULE: [1..] [PROB] BODY\n" 146498943Sluigi"RULENUM: INTEGER(1..65534)\n" 146598943Sluigi"PROB: prob REAL(0..1)\n" 146698943Sluigi"BODY: check-state [LOG] (no body) |\n" 146798943Sluigi" ACTION [LOG] MATCH_ADDR [OPTION_LIST]\n" 146898943Sluigi"ACTION: check-state | allow | count | deny | reject | skipto N |\n" 146998943Sluigi" {divert|tee} PORT | forward ADDR | pipe N | queue N\n" 147098943Sluigi"ADDR: [ MAC dst src ether_type ] \n" 147198943Sluigi" [ from IPLIST [ PORT ] to IPLIST [ PORTLIST ] ]\n" 147298943Sluigi"IPLIST: IPADDR | ( IPADDR or ... or IPADDR )\n" 147398943Sluigi"IPADDR: [not] { any | me | ip | ip/bits | ip:mask | ip/bits{x,y,z} }\n" 147498943Sluigi"OPTION_LIST: OPTION [,OPTION_LIST]\n" 147598943Sluigi); 147698943Sluigiexit(0); 147798943Sluigi} 147898943Sluigi 147998943Sluigi 148098943Sluigistatic int 148198943Sluigilookup_host (char *host, struct in_addr *ipaddr) 148298943Sluigi{ 148398943Sluigi struct hostent *he; 148498943Sluigi 148598943Sluigi if (!inet_aton(host, ipaddr)) { 148698943Sluigi if ((he = gethostbyname(host)) == NULL) 148798943Sluigi return(-1); 148898943Sluigi *ipaddr = *(struct in_addr *)he->h_addr_list[0]; 148998943Sluigi } 149098943Sluigi return(0); 149198943Sluigi} 149298943Sluigi 149398943Sluigi/* 149498943Sluigi * fills the addr and mask fields in the instruction as appropriate from av. 149598943Sluigi * Update length as appropriate. 149698943Sluigi * The following formats are allowed: 149798943Sluigi * any matches any IP. Actually returns an empty instruction. 149898943Sluigi * me returns O_IP_*_ME 149998943Sluigi * 1.2.3.4 single IP address 150098943Sluigi * 1.2.3.4:5.6.7.8 address:mask 150198943Sluigi * 1.2.3.4/24 address/mask 150298943Sluigi * 1.2.3.4/26{1,6,5,4,23} set of addresses in a subnet 150398943Sluigi */ 150498943Sluigistatic void 150598943Sluigifill_ip(ipfw_insn_ip *cmd, char *av) 150698943Sluigi{ 150798943Sluigi char *p = 0, md = 0; 150898943Sluigi u_int32_t i; 150998943Sluigi 151098943Sluigi cmd->o.len &= ~F_LEN_MASK; /* zero len */ 151198943Sluigi 151298943Sluigi if (!strncmp(av, "any", strlen(av))) 151398943Sluigi return; 151498943Sluigi 151598943Sluigi if (!strncmp(av, "me", strlen(av))) { 151698943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn); 151798943Sluigi return; 151898943Sluigi } 151998943Sluigi 152098943Sluigi p = strchr(av, '/'); 152198943Sluigi if (!p) 152298943Sluigi p = strchr(av, ':'); 152398943Sluigi if (p) { 152498943Sluigi md = *p; 152598943Sluigi *p++ = '\0'; 152698943Sluigi } 152798943Sluigi 152898943Sluigi if (lookup_host(av, &cmd->addr) != 0) 152998943Sluigi errx(EX_NOHOST, "hostname ``%s'' unknown", av); 153098943Sluigi switch (md) { 153198943Sluigi case ':': 153298943Sluigi if (!inet_aton(p, &cmd->mask)) 153398943Sluigi errx(EX_DATAERR, "bad netmask ``%s''", p); 153498943Sluigi break; 153598943Sluigi case '/': 153698943Sluigi i = atoi(p); 153798943Sluigi if (i == 0) 153898943Sluigi cmd->mask.s_addr = htonl(0); 153998943Sluigi else if (i > 32) 154098943Sluigi errx(EX_DATAERR, "bad width ``%s''", p); 154198943Sluigi else 154298943Sluigi cmd->mask.s_addr = htonl(~0 << (32 - i)); 154398943Sluigi break; 154498943Sluigi default: 154598943Sluigi cmd->mask.s_addr = htonl(~0); 154698943Sluigi break; 154798943Sluigi } 154898943Sluigi cmd->addr.s_addr &= cmd->mask.s_addr; 154998943Sluigi /* 155098943Sluigi * now look if we have a set of addresses. They are stored as follows: 155198943Sluigi * arg1 is the set size (powers of 2, 2..256) 155298943Sluigi * addr is the base address IN HOST FORMAT 155398943Sluigi * mask.. is an array of u_int32_t with bits set. 155498943Sluigi */ 155598943Sluigi if (p) 155698943Sluigi p = strchr(p, '{'); 155798943Sluigi if (p) { /* fetch addresses */ 155898943Sluigi u_int32_t *d; 155998943Sluigi int low, high; 156098943Sluigi int i = contigmask((u_char *)&(cmd->mask), 32); 156198943Sluigi 156298943Sluigi if (i < 24 || i > 31) { 156398943Sluigi fprintf(stderr, "invalid set with mask %d\n", 156498943Sluigi i); 156598943Sluigi exit(0); 156698943Sluigi } 156798943Sluigi cmd->o.arg1 = 1<<(32-i); 156898943Sluigi cmd->addr.s_addr = ntohl(cmd->addr.s_addr); 156998943Sluigi d = (u_int32_t *)&cmd->mask; 157098943Sluigi cmd->o.opcode = O_IP_DST_SET; /* default */ 157198943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32) + (cmd->o.arg1+31)/32; 1572101117Sluigi for (i = 0; i < (cmd->o.arg1+31)/32 ; i++) 157398943Sluigi d[i] = 0; /* clear masks */ 157498943Sluigi 157598943Sluigi av = p+1; 157698943Sluigi low = cmd->addr.s_addr & 0xff; 157798943Sluigi high = low + cmd->o.arg1 - 1; 157898943Sluigi while (isdigit(*av)) { 157998943Sluigi char *s; 158098943Sluigi u_int16_t a = strtol(av, &s, 0); 158198943Sluigi 158298943Sluigi if (s == av) /* no parameter */ 158398943Sluigi break; 158498943Sluigi if (a < low || a > high) { 158598943Sluigi fprintf(stderr, "addr %d out of range [%d-%d]\n", 158698943Sluigi a, low, high); 158798943Sluigi exit(0); 158898943Sluigi } 158998943Sluigi a -= low; 159098943Sluigi d[ a/32] |= 1<<(a & 31); 159198943Sluigi if (*s != ',') 159298943Sluigi break; 159398943Sluigi av = s+1; 159498943Sluigi } 159598943Sluigi return; 159698943Sluigi } 159798943Sluigi 159898943Sluigi if (cmd->mask.s_addr == 0) { /* any */ 159998943Sluigi if (cmd->o.len & F_NOT) 160098943Sluigi errx(EX_DATAERR, "not any never matches"); 160198943Sluigi else /* useless, nuke it */ 160298943Sluigi return; 160398943Sluigi } else if (cmd->mask.s_addr == IP_MASK_ALL) /* one IP */ 160498943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 160598943Sluigi else /* addr/mask */ 160698943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_ip); 160798943Sluigi} 160898943Sluigi 160998943Sluigi 161098943Sluigi/* 161198943Sluigi * helper function to process a set of flags and set bits in the 161298943Sluigi * appropriate masks. 161398943Sluigi */ 161498943Sluigistatic void 161598943Sluigifill_flags(ipfw_insn *cmd, enum ipfw_opcodes opcode, 161698943Sluigi struct _s_x *flags, char *p) 161798943Sluigi{ 161898943Sluigi u_int8_t set=0, clear=0; 161998943Sluigi 162098943Sluigi while (p && *p) { 162198943Sluigi char *q; /* points to the separator */ 162298943Sluigi int val; 162398943Sluigi u_int8_t *which; /* mask we are working on */ 162498943Sluigi 162598943Sluigi if (*p == '!') { 162698943Sluigi p++; 162798943Sluigi which = &clear; 162898943Sluigi } else 162998943Sluigi which = &set; 163098943Sluigi q = strchr(p, ','); 163198943Sluigi if (q) 163298943Sluigi *q++ = '\0'; 163398943Sluigi val = match_token(flags, p); 163498943Sluigi if (val <= 0) 163598943Sluigi errx(EX_DATAERR, "invalid flag %s", p); 163698943Sluigi *which |= (u_int8_t)val; 163798943Sluigi p = q; 163898943Sluigi } 163998943Sluigi cmd->opcode = opcode; 164098943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | 1; 164198943Sluigi cmd->arg1 = (set & 0xff) | ( (clear & 0xff) << 8); 164298943Sluigi} 164398943Sluigi 164498943Sluigi 164598943Sluigistatic void 164698943Sluigidelete(int ac, char *av[]) 164798943Sluigi{ 164898943Sluigi int rulenum; 164998943Sluigi struct dn_pipe pipe; 165098943Sluigi int i; 165198943Sluigi int exitval = EX_OK; 165298943Sluigi 165398943Sluigi memset(&pipe, 0, sizeof pipe); 165498943Sluigi 165598943Sluigi av++; ac--; 165698943Sluigi 165798943Sluigi /* Rule number */ 165898943Sluigi while (ac && isdigit(**av)) { 165998943Sluigi i = atoi(*av); av++; ac--; 166098943Sluigi if (do_pipe) { 166198943Sluigi if (do_pipe == 1) 166298943Sluigi pipe.pipe_nr = i; 166398943Sluigi else 166498943Sluigi pipe.fs.fs_nr = i; 166598943Sluigi i = setsockopt(s, IPPROTO_IP, IP_DUMMYNET_DEL, 166698943Sluigi &pipe, sizeof pipe); 166798943Sluigi if (i) { 166898943Sluigi exitval = 1; 166998943Sluigi warn("rule %u: setsockopt(IP_DUMMYNET_DEL)", 167098943Sluigi do_pipe == 1 ? pipe.pipe_nr : 167198943Sluigi pipe.fs.fs_nr); 167298943Sluigi } 167398943Sluigi } else { 167498943Sluigi rulenum = i; 167598943Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, &rulenum, 167698943Sluigi sizeof rulenum); 167798943Sluigi if (i) { 167898943Sluigi exitval = EX_UNAVAILABLE; 167998943Sluigi warn("rule %u: setsockopt(IP_FW_DEL)", 168098943Sluigi rulenum); 168198943Sluigi } 168298943Sluigi } 168398943Sluigi } 168498943Sluigi if (exitval != EX_OK) 168598943Sluigi exit(exitval); 168698943Sluigi} 168798943Sluigi 168898943Sluigi 168998943Sluigi/* 169098943Sluigi * fill the interface structure. We do not check the name as we can 169198943Sluigi * create interfaces dynamically, so checking them at insert time 169298943Sluigi * makes relatively little sense. 169398943Sluigi * A '*' following the name means any unit. 169498943Sluigi */ 169598943Sluigistatic void 169698943Sluigifill_iface(ipfw_insn_if *cmd, char *arg) 169798943Sluigi{ 169898943Sluigi cmd->name[0] = '\0'; 169998943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_if); 170098943Sluigi 170198943Sluigi /* Parse the interface or address */ 170298943Sluigi if (!strcmp(arg, "any")) 170398943Sluigi cmd->o.len = 0; /* effectively ignore this command */ 170498943Sluigi else if (!isdigit(*arg)) { 170598943Sluigi char *q; 170698943Sluigi 170798943Sluigi strncpy(cmd->name, arg, sizeof(cmd->name)); 170898943Sluigi cmd->name[sizeof(cmd->name) - 1] = '\0'; 170998943Sluigi /* find first digit or wildcard */ 171098943Sluigi for (q = cmd->name; *q && !isdigit(*q) && *q != '*'; q++) 171198943Sluigi continue; 171298943Sluigi cmd->p.unit = (*q == '*') ? -1 : atoi(q); 171398943Sluigi *q = '\0'; 171498943Sluigi } else if (!inet_aton(arg, &cmd->p.ip)) 171598943Sluigi errx(EX_DATAERR, "bad ip address ``%s''", arg); 171698943Sluigi} 171798943Sluigi 171898943Sluigi/* 171998943Sluigi * the following macro returns an error message if we run out of 172098943Sluigi * arguments. 172198943Sluigi */ 172298943Sluigi#define NEED1(msg) {if (!ac) errx(EX_USAGE, msg);} 172398943Sluigi 172498943Sluigistatic void 172598943Sluigiconfig_pipe(int ac, char **av) 172698943Sluigi{ 172798943Sluigi struct dn_pipe pipe; 172898943Sluigi int i; 172998943Sluigi char *end; 173098943Sluigi u_int32_t a; 173198943Sluigi void *par = NULL; 173298943Sluigi 173398943Sluigi memset(&pipe, 0, sizeof pipe); 173498943Sluigi 173598943Sluigi av++; ac--; 173698943Sluigi /* Pipe number */ 173798943Sluigi if (ac && isdigit(**av)) { 173898943Sluigi i = atoi(*av); av++; ac--; 173998943Sluigi if (do_pipe == 1) 174098943Sluigi pipe.pipe_nr = i; 174198943Sluigi else 174298943Sluigi pipe.fs.fs_nr = i; 174398943Sluigi } 174499475Sluigi while (ac > 0) { 174598943Sluigi double d; 174698943Sluigi int tok = match_token(dummynet_params, *av); 174798943Sluigi ac--; av++; 174898943Sluigi 174998943Sluigi switch(tok) { 175098943Sluigi case TOK_PLR: 175198943Sluigi NEED1("plr needs argument 0..1\n"); 175298943Sluigi d = strtod(av[0], NULL); 175398943Sluigi if (d > 1) 175498943Sluigi d = 1; 175598943Sluigi else if (d < 0) 175698943Sluigi d = 0; 175798943Sluigi pipe.fs.plr = (int)(d*0x7fffffff); 175898943Sluigi ac--; av++; 175998943Sluigi break; 176098943Sluigi 176198943Sluigi case TOK_QUEUE: 176298943Sluigi NEED1("queue needs queue size\n"); 176398943Sluigi end = NULL; 176498943Sluigi pipe.fs.qsize = strtoul(av[0], &end, 0); 176598943Sluigi if (*end == 'K' || *end == 'k') { 176698943Sluigi pipe.fs.flags_fs |= DN_QSIZE_IS_BYTES; 176798943Sluigi pipe.fs.qsize *= 1024; 176898943Sluigi } else if (*end == 'B' || !strncmp(end, "by", 2)) { 176998943Sluigi pipe.fs.flags_fs |= DN_QSIZE_IS_BYTES; 177098943Sluigi } 177198943Sluigi ac--; av++; 177298943Sluigi break; 177398943Sluigi 177498943Sluigi case TOK_BUCKETS: 177598943Sluigi NEED1("buckets needs argument\n"); 177698943Sluigi pipe.fs.rq_size = strtoul(av[0], NULL, 0); 177798943Sluigi ac--; av++; 177898943Sluigi break; 177998943Sluigi 178098943Sluigi case TOK_MASK: 178198943Sluigi NEED1("mask needs mask specifier\n"); 178298943Sluigi /* 178398943Sluigi * per-flow queue, mask is dst_ip, dst_port, 178498943Sluigi * src_ip, src_port, proto measured in bits 178598943Sluigi */ 178698943Sluigi par = NULL; 178798943Sluigi 178898943Sluigi pipe.fs.flow_mask.dst_ip = 0; 178998943Sluigi pipe.fs.flow_mask.src_ip = 0; 179098943Sluigi pipe.fs.flow_mask.dst_port = 0; 179198943Sluigi pipe.fs.flow_mask.src_port = 0; 179298943Sluigi pipe.fs.flow_mask.proto = 0; 179398943Sluigi end = NULL; 179498943Sluigi 179598943Sluigi while (ac >= 1) { 179698943Sluigi u_int32_t *p32 = NULL; 179798943Sluigi u_int16_t *p16 = NULL; 179898943Sluigi 179998943Sluigi tok = match_token(dummynet_params, *av); 180098943Sluigi ac--; av++; 180198943Sluigi switch(tok) { 180298943Sluigi case TOK_ALL: 180398943Sluigi /* 180498943Sluigi * special case, all bits significant 180598943Sluigi */ 180698943Sluigi pipe.fs.flow_mask.dst_ip = ~0; 180798943Sluigi pipe.fs.flow_mask.src_ip = ~0; 180898943Sluigi pipe.fs.flow_mask.dst_port = ~0; 180998943Sluigi pipe.fs.flow_mask.src_port = ~0; 181098943Sluigi pipe.fs.flow_mask.proto = ~0; 181198943Sluigi pipe.fs.flags_fs |= DN_HAVE_FLOW_MASK; 181298943Sluigi goto end_mask; 181398943Sluigi 181498943Sluigi case TOK_DSTIP: 181598943Sluigi p32 = &pipe.fs.flow_mask.dst_ip; 181698943Sluigi break; 181798943Sluigi 181898943Sluigi case TOK_SRCIP: 181998943Sluigi p32 = &pipe.fs.flow_mask.src_ip; 182098943Sluigi break; 182198943Sluigi 182298943Sluigi case TOK_DSTPORT: 182398943Sluigi p16 = &pipe.fs.flow_mask.dst_port; 182498943Sluigi break; 182598943Sluigi 182698943Sluigi case TOK_SRCPORT: 182798943Sluigi p16 = &pipe.fs.flow_mask.src_port; 182898943Sluigi break; 182998943Sluigi 183098943Sluigi case TOK_PROTO: 183198943Sluigi break; 183298943Sluigi 183398943Sluigi default: 183498943Sluigi ac++; av--; /* backtrack */ 183598943Sluigi goto end_mask; 183698943Sluigi } 183798943Sluigi if (ac < 1) 183898943Sluigi errx(EX_USAGE, "mask: value missing"); 183998943Sluigi if (*av[0] == '/') { 184098943Sluigi a = strtoul(av[0]+1, &end, 0); 184198943Sluigi a = (a == 32) ? ~0 : (1 << a) - 1; 184298943Sluigi } else 184399909Sluigi a = strtoul(av[0], &end, 0); 184498943Sluigi if (p32 != NULL) 184598943Sluigi *p32 = a; 184698943Sluigi else if (p16 != NULL) { 184798943Sluigi if (a > 65535) 184898943Sluigi errx(EX_DATAERR, 184998943Sluigi "mask: must be 16 bit"); 185098943Sluigi *p16 = (u_int16_t)a; 185198943Sluigi } else { 185298943Sluigi if (a > 255) 185398943Sluigi errx(EX_DATAERR, 185498943Sluigi "mask: must be 8 bit"); 185598943Sluigi pipe.fs.flow_mask.proto = (u_int8_t)a; 185698943Sluigi } 185798943Sluigi if (a != 0) 185898943Sluigi pipe.fs.flags_fs |= DN_HAVE_FLOW_MASK; 185998943Sluigi ac--; av++; 186098943Sluigi } /* end while, config masks */ 186198943Sluigiend_mask: 186298943Sluigi break; 186398943Sluigi 186498943Sluigi case TOK_RED: 186598943Sluigi case TOK_GRED: 186698943Sluigi NEED1("red/gred needs w_q/min_th/max_th/max_p\n"); 186798943Sluigi pipe.fs.flags_fs |= DN_IS_RED; 186898943Sluigi if (tok == TOK_GRED) 186998943Sluigi pipe.fs.flags_fs |= DN_IS_GENTLE_RED; 187098943Sluigi /* 187198943Sluigi * the format for parameters is w_q/min_th/max_th/max_p 187298943Sluigi */ 187398943Sluigi if ((end = strsep(&av[0], "/"))) { 187498943Sluigi double w_q = strtod(end, NULL); 187598943Sluigi if (w_q > 1 || w_q <= 0) 187698943Sluigi errx(EX_DATAERR, "0 < w_q <= 1"); 187798943Sluigi pipe.fs.w_q = (int) (w_q * (1 << SCALE_RED)); 187898943Sluigi } 187998943Sluigi if ((end = strsep(&av[0], "/"))) { 188098943Sluigi pipe.fs.min_th = strtoul(end, &end, 0); 188198943Sluigi if (*end == 'K' || *end == 'k') 188298943Sluigi pipe.fs.min_th *= 1024; 188398943Sluigi } 188498943Sluigi if ((end = strsep(&av[0], "/"))) { 188598943Sluigi pipe.fs.max_th = strtoul(end, &end, 0); 188698943Sluigi if (*end == 'K' || *end == 'k') 188798943Sluigi pipe.fs.max_th *= 1024; 188898943Sluigi } 188998943Sluigi if ((end = strsep(&av[0], "/"))) { 189098943Sluigi double max_p = strtod(end, NULL); 189198943Sluigi if (max_p > 1 || max_p <= 0) 189298943Sluigi errx(EX_DATAERR, "0 < max_p <= 1"); 189398943Sluigi pipe.fs.max_p = (int)(max_p * (1 << SCALE_RED)); 189498943Sluigi } 189598943Sluigi ac--; av++; 189698943Sluigi break; 189798943Sluigi 189898943Sluigi case TOK_DROPTAIL: 189998943Sluigi pipe.fs.flags_fs &= ~(DN_IS_RED|DN_IS_GENTLE_RED); 190098943Sluigi break; 190198943Sluigi 190298943Sluigi case TOK_BW: 190398943Sluigi NEED1("bw needs bandwidth or interface\n"); 190498943Sluigi if (do_pipe != 1) 190598943Sluigi errx(EX_DATAERR, "bandwidth only valid for pipes"); 190698943Sluigi /* 190798943Sluigi * set clocking interface or bandwidth value 190898943Sluigi */ 190998943Sluigi if (av[0][0] >= 'a' && av[0][0] <= 'z') { 191098943Sluigi int l = sizeof(pipe.if_name)-1; 191198943Sluigi /* interface name */ 191298943Sluigi strncpy(pipe.if_name, av[0], l); 191398943Sluigi pipe.if_name[l] = '\0'; 191498943Sluigi pipe.bandwidth = 0; 191598943Sluigi } else { 191698943Sluigi pipe.if_name[0] = '\0'; 191798943Sluigi pipe.bandwidth = strtoul(av[0], &end, 0); 191898943Sluigi if (*end == 'K' || *end == 'k') { 191998943Sluigi end++; 192098943Sluigi pipe.bandwidth *= 1000; 192198943Sluigi } else if (*end == 'M') { 192298943Sluigi end++; 192398943Sluigi pipe.bandwidth *= 1000000; 192498943Sluigi } 192598943Sluigi if (*end == 'B' || !strncmp(end, "by", 2)) 192698943Sluigi pipe.bandwidth *= 8; 192798943Sluigi if (pipe.bandwidth < 0) 192898943Sluigi errx(EX_DATAERR, "bandwidth too large"); 192998943Sluigi } 193098943Sluigi ac--; av++; 193198943Sluigi break; 193298943Sluigi 193398943Sluigi case TOK_DELAY: 193498943Sluigi if (do_pipe != 1) 193598943Sluigi errx(EX_DATAERR, "delay only valid for pipes"); 193698943Sluigi NEED1("delay needs argument 0..10000ms\n"); 193798943Sluigi pipe.delay = strtoul(av[0], NULL, 0); 193898943Sluigi ac--; av++; 193998943Sluigi break; 194098943Sluigi 194198943Sluigi case TOK_WEIGHT: 194298943Sluigi if (do_pipe == 1) 194398943Sluigi errx(EX_DATAERR,"weight only valid for queues"); 194498943Sluigi NEED1("weight needs argument 0..100\n"); 194598943Sluigi pipe.fs.weight = strtoul(av[0], &end, 0); 194698943Sluigi ac--; av++; 194798943Sluigi break; 194898943Sluigi 194998943Sluigi case TOK_PIPE: 195098943Sluigi if (do_pipe == 1) 195198943Sluigi errx(EX_DATAERR,"pipe only valid for queues"); 195298943Sluigi NEED1("pipe needs pipe_number\n"); 195398943Sluigi pipe.fs.parent_nr = strtoul(av[0], &end, 0); 195498943Sluigi ac--; av++; 195598943Sluigi break; 195698943Sluigi 195798943Sluigi default: 195898943Sluigi errx(EX_DATAERR, "unrecognised option ``%s''", *av); 195998943Sluigi } 196098943Sluigi } 196198943Sluigi if (do_pipe == 1) { 196298943Sluigi if (pipe.pipe_nr == 0) 196398943Sluigi errx(EX_DATAERR, "pipe_nr must be > 0"); 196498943Sluigi if (pipe.delay > 10000) 196598943Sluigi errx(EX_DATAERR, "delay must be < 10000"); 196698943Sluigi } else { /* do_pipe == 2, queue */ 196798943Sluigi if (pipe.fs.parent_nr == 0) 196898943Sluigi errx(EX_DATAERR, "pipe must be > 0"); 196998943Sluigi if (pipe.fs.weight >100) 197098943Sluigi errx(EX_DATAERR, "weight must be <= 100"); 197198943Sluigi } 197298943Sluigi if (pipe.fs.flags_fs & DN_QSIZE_IS_BYTES) { 197398943Sluigi if (pipe.fs.qsize > 1024*1024) 197498943Sluigi errx(EX_DATAERR, "queue size must be < 1MB"); 197598943Sluigi } else { 197698943Sluigi if (pipe.fs.qsize > 100) 197798943Sluigi errx(EX_DATAERR, "2 <= queue size <= 100"); 197898943Sluigi } 197998943Sluigi if (pipe.fs.flags_fs & DN_IS_RED) { 198098943Sluigi size_t len; 198198943Sluigi int lookup_depth, avg_pkt_size; 198298943Sluigi double s, idle, weight, w_q; 198398943Sluigi struct clockinfo clock; 198498943Sluigi int t; 198598943Sluigi 198698943Sluigi if (pipe.fs.min_th >= pipe.fs.max_th) 198798943Sluigi errx(EX_DATAERR, "min_th %d must be < than max_th %d", 198898943Sluigi pipe.fs.min_th, pipe.fs.max_th); 198998943Sluigi if (pipe.fs.max_th == 0) 199098943Sluigi errx(EX_DATAERR, "max_th must be > 0"); 199198943Sluigi 199298943Sluigi len = sizeof(int); 199398943Sluigi if (sysctlbyname("net.inet.ip.dummynet.red_lookup_depth", 199498943Sluigi &lookup_depth, &len, NULL, 0) == -1) 199598943Sluigi 199698943Sluigi errx(1, "sysctlbyname(\"%s\")", 199798943Sluigi "net.inet.ip.dummynet.red_lookup_depth"); 199898943Sluigi if (lookup_depth == 0) 199998943Sluigi errx(EX_DATAERR, "net.inet.ip.dummynet.red_lookup_depth" 200098943Sluigi " must be greater than zero"); 200198943Sluigi 200298943Sluigi len = sizeof(int); 200398943Sluigi if (sysctlbyname("net.inet.ip.dummynet.red_avg_pkt_size", 200498943Sluigi &avg_pkt_size, &len, NULL, 0) == -1) 200598943Sluigi 200698943Sluigi errx(1, "sysctlbyname(\"%s\")", 200798943Sluigi "net.inet.ip.dummynet.red_avg_pkt_size"); 200898943Sluigi if (avg_pkt_size == 0) 200998943Sluigi errx(EX_DATAERR, 201098943Sluigi "net.inet.ip.dummynet.red_avg_pkt_size must" 201198943Sluigi " be greater than zero"); 201298943Sluigi 201398943Sluigi len = sizeof(struct clockinfo); 201498943Sluigi if (sysctlbyname("kern.clockrate", &clock, &len, NULL, 0) == -1) 201598943Sluigi errx(1, "sysctlbyname(\"%s\")", "kern.clockrate"); 201698943Sluigi 201798943Sluigi /* 201898943Sluigi * Ticks needed for sending a medium-sized packet. 201998943Sluigi * Unfortunately, when we are configuring a WF2Q+ queue, we 202098943Sluigi * do not have bandwidth information, because that is stored 202198943Sluigi * in the parent pipe, and also we have multiple queues 202298943Sluigi * competing for it. So we set s=0, which is not very 202398943Sluigi * correct. But on the other hand, why do we want RED with 202498943Sluigi * WF2Q+ ? 202598943Sluigi */ 202698943Sluigi if (pipe.bandwidth==0) /* this is a WF2Q+ queue */ 202798943Sluigi s = 0; 202898943Sluigi else 202998943Sluigi s = clock.hz * avg_pkt_size * 8 / pipe.bandwidth; 203098943Sluigi 203198943Sluigi /* 203298943Sluigi * max idle time (in ticks) before avg queue size becomes 0. 203398943Sluigi * NOTA: (3/w_q) is approx the value x so that 203498943Sluigi * (1-w_q)^x < 10^-3. 203598943Sluigi */ 203698943Sluigi w_q = ((double)pipe.fs.w_q) / (1 << SCALE_RED); 203798943Sluigi idle = s * 3. / w_q; 203898943Sluigi pipe.fs.lookup_step = (int)idle / lookup_depth; 203998943Sluigi if (!pipe.fs.lookup_step) 204098943Sluigi pipe.fs.lookup_step = 1; 204198943Sluigi weight = 1 - w_q; 204298943Sluigi for (t = pipe.fs.lookup_step; t > 0; --t) 204398943Sluigi weight *= weight; 204498943Sluigi pipe.fs.lookup_weight = (int)(weight * (1 << SCALE_RED)); 204598943Sluigi } 204698943Sluigi i = setsockopt(s, IPPROTO_IP, IP_DUMMYNET_CONFIGURE, &pipe, 204798943Sluigi sizeof pipe); 204898943Sluigi if (i) 204998943Sluigi err(1, "setsockopt(%s)", "IP_DUMMYNET_CONFIGURE"); 205098943Sluigi} 205198943Sluigi 205298943Sluigistatic void 205398943Sluigiget_mac_addr_mask(char *p, u_char *addr, u_char *mask) 205498943Sluigi{ 205598943Sluigi int i, l; 205698943Sluigi 205798943Sluigi for (i=0; i<6; i++) 205898943Sluigi addr[i] = mask[i] = 0; 205998943Sluigi if (!strcmp(p, "any")) 206098943Sluigi return; 206198943Sluigi 206298943Sluigi for (i=0; *p && i<6;i++, p++) { 206398943Sluigi addr[i] = strtol(p, &p, 16); 206498943Sluigi if (*p != ':') /* we start with the mask */ 206598943Sluigi break; 206698943Sluigi } 206798943Sluigi if (*p == '/') { /* mask len */ 206898943Sluigi l = strtol(p+1, &p, 0); 206998943Sluigi for (i=0; l>0; l -=8, i++) 207098943Sluigi mask[i] = (l >=8) ? 0xff : (~0) << (8-l); 207198943Sluigi } else if (*p == '&') { /* mask */ 207298943Sluigi for (i=0, p++; *p && i<6;i++, p++) { 207398943Sluigi mask[i] = strtol(p, &p, 16); 207498943Sluigi if (*p != ':') 207598943Sluigi break; 207698943Sluigi } 207798943Sluigi } else if (*p == '\0') { 207898943Sluigi for (i=0; i<6; i++) 207998943Sluigi mask[i] = 0xff; 208098943Sluigi } 208198943Sluigi for (i=0; i<6; i++) 208298943Sluigi addr[i] &= mask[i]; 208398943Sluigi} 208498943Sluigi 208598943Sluigi/* 208698943Sluigi * helper function, updates the pointer to cmd with the length 208798943Sluigi * of the current command, and also cleans up the first word of 208898943Sluigi * the new command in case it has been clobbered before. 208998943Sluigi */ 209098943Sluigistatic ipfw_insn * 209198943Sluiginext_cmd(ipfw_insn *cmd) 209298943Sluigi{ 209398943Sluigi cmd += F_LEN(cmd); 209498943Sluigi bzero(cmd, sizeof(*cmd)); 209598943Sluigi return cmd; 209698943Sluigi} 209798943Sluigi 209898943Sluigi/* 209998943Sluigi * A function to fill simple commands of size 1. 210098943Sluigi * Existing flags are preserved. 210198943Sluigi */ 210298943Sluigistatic void 210398943Sluigifill_cmd(ipfw_insn *cmd, enum ipfw_opcodes opcode, int flags, u_int16_t arg) 210498943Sluigi{ 210598943Sluigi cmd->opcode = opcode; 210698943Sluigi cmd->len = ((cmd->len | flags) & (F_NOT | F_OR)) | 1; 210798943Sluigi cmd->arg1 = arg; 210898943Sluigi} 210998943Sluigi 211098943Sluigi/* 211198943Sluigi * Fetch and add the MAC address and type, with masks. This generates one or 211298943Sluigi * two microinstructions, and returns the pointer to the last one. 211398943Sluigi */ 211498943Sluigistatic ipfw_insn * 211598943Sluigiadd_mac(ipfw_insn *cmd, int ac, char *av[]) 211698943Sluigi{ 211798943Sluigi ipfw_insn_mac *mac; /* also *src */ 211898943Sluigi 211998943Sluigi if (ac <3) 212098943Sluigi errx(EX_DATAERR, "MAC dst src type"); 212198943Sluigi 212298943Sluigi cmd->opcode = O_MACADDR2; 212398943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | F_INSN_SIZE(ipfw_insn_mac); 212498943Sluigi 212598943Sluigi mac = (ipfw_insn_mac *)cmd; 212698943Sluigi get_mac_addr_mask(av[0], mac->addr, mac->mask); /* dst */ 212798943Sluigi get_mac_addr_mask(av[1], &(mac->addr[6]), &(mac->mask[6])); /* src */ 212898943Sluigi av += 2; 212998943Sluigi 213098943Sluigi if (strcmp(av[0], "any") != 0) { /* we have a non-null port */ 213198943Sluigi cmd += F_LEN(cmd); 213298943Sluigi 213398943Sluigi fill_newports((ipfw_insn_u16 *)cmd, av[0], IPPROTO_ETHERTYPE); 213498943Sluigi cmd->opcode = O_MAC_TYPE; 213598943Sluigi } 213698943Sluigi 213798943Sluigi return cmd; 213898943Sluigi} 213998943Sluigi 214098943Sluigi/* 214198943Sluigi * Parse arguments and assemble the microinstructions which make up a rule. 214298943Sluigi * Rules are added into the 'rulebuf' and then copied in the correct order 214398943Sluigi * into the actual rule. 214498943Sluigi * 214598943Sluigi * The syntax for a rule starts with the action, followed by an 214698943Sluigi * optional log action, and the various match patterns. 214798943Sluigi * In the assembled microcode, the first opcode must be a O_PROBE_STATE 214898943Sluigi * (generated if the rule includes a keep-state option), then the 214998943Sluigi * various match patterns, the "log" action, and the actual action. 215098943Sluigi * 215198943Sluigi */ 215298943Sluigistatic void 215398943Sluigiadd(int ac, char *av[]) 215498943Sluigi{ 215598943Sluigi /* 215698943Sluigi * rules are added into the 'rulebuf' and then copied in 215798943Sluigi * the correct order into the actual rule. 215898943Sluigi * Some things that need to go out of order (prob, action etc.) 215998943Sluigi * go into actbuf[]. 216098943Sluigi */ 216198943Sluigi static u_int32_t rulebuf[255], actbuf[255], cmdbuf[255]; 216298943Sluigi 216398943Sluigi ipfw_insn *src, *dst, *cmd, *action, *prev; 216498943Sluigi 216598943Sluigi struct ip_fw *rule; 216698943Sluigi 216798943Sluigi /* 216898943Sluigi * various flags used to record that we entered some fields. 216998943Sluigi */ 217098943Sluigi int have_mac = 0; /* set if we have a MAC address */ 2171101116Sluigi ipfw_insn *have_state = NULL; /* check-state or keep-state */ 217298943Sluigi 217398943Sluigi int i; 217498943Sluigi 217598943Sluigi int open_par = 0; /* open parenthesis ( */ 217698943Sluigi 217798943Sluigi /* proto is here because it is used to fetch ports */ 217898943Sluigi u_char proto = IPPROTO_IP; /* default protocol */ 217998943Sluigi 218098943Sluigi bzero(actbuf, sizeof(actbuf)); /* actions go here */ 218198943Sluigi bzero(cmdbuf, sizeof(cmdbuf)); 218298943Sluigi bzero(rulebuf, sizeof(rulebuf)); 218398943Sluigi 218498943Sluigi rule = (struct ip_fw *)rulebuf; 218598943Sluigi cmd = (ipfw_insn *)cmdbuf; 218698943Sluigi action = (ipfw_insn *)actbuf; 218798943Sluigi 218898943Sluigi av++; ac--; 218998943Sluigi 219098943Sluigi /* [rule N] -- Rule number optional */ 219198943Sluigi if (ac && isdigit(**av)) { 219298943Sluigi rule->rulenum = atoi(*av); 219398943Sluigi av++; 219498943Sluigi ac--; 219598943Sluigi } 219698943Sluigi 219798943Sluigi /* [prob D] -- match probability, optional */ 219898943Sluigi if (ac > 1 && !strncmp(*av, "prob", strlen(*av))) { 219998943Sluigi double d = strtod(av[1], NULL); 220098943Sluigi 220198943Sluigi if (d <= 0 || d > 1) 220298943Sluigi errx(EX_DATAERR, "illegal match prob. %s", av[1]); 220398943Sluigi if (d != 1) { /* 1 means always match */ 220498943Sluigi action->opcode = O_PROB; 220598943Sluigi action->len = 2; 220698943Sluigi *((int32_t *)(action+1)) = 220798943Sluigi (int32_t)((1 - d) * 0x7fffffff); 220898943Sluigi action += action->len; 220998943Sluigi } 221098943Sluigi av += 2; ac -= 2; 221198943Sluigi } 221298943Sluigi 221398943Sluigi /* action -- mandatory */ 221498943Sluigi NEED1("missing action"); 221598943Sluigi i = match_token(rule_actions, *av); 221698943Sluigi ac--; av++; 221798943Sluigi action->len = 1; /* default */ 221898943Sluigi switch(i) { 221998943Sluigi case TOK_CHECKSTATE: 2220101116Sluigi have_state = action; 222198943Sluigi action->opcode = O_CHECK_STATE; 222298943Sluigi break; 222398943Sluigi 222498943Sluigi case TOK_ACCEPT: 222598943Sluigi action->opcode = O_ACCEPT; 222698943Sluigi break; 222798943Sluigi 222898943Sluigi case TOK_DENY: 222998943Sluigi action->opcode = O_DENY; 223099475Sluigi action->arg1 = 0; 223198943Sluigi break; 223298943Sluigi 223399475Sluigi case TOK_REJECT: 223499475Sluigi action->opcode = O_REJECT; 223599475Sluigi action->arg1 = ICMP_UNREACH_HOST; 223699475Sluigi break; 223799475Sluigi 223899475Sluigi case TOK_RESET: 223999475Sluigi action->opcode = O_REJECT; 224099475Sluigi action->arg1 = ICMP_REJECT_RST; 224199475Sluigi break; 224299475Sluigi 224399475Sluigi case TOK_UNREACH: 224499475Sluigi action->opcode = O_REJECT; 224599475Sluigi NEED1("missing reject code"); 224699475Sluigi fill_reject_code(&action->arg1, *av); 224799475Sluigi ac--; av++; 224899475Sluigi break; 224999475Sluigi 225098943Sluigi case TOK_COUNT: 225198943Sluigi action->opcode = O_COUNT; 225298943Sluigi break; 225398943Sluigi 225498943Sluigi case TOK_QUEUE: 225598943Sluigi case TOK_PIPE: 225698943Sluigi action->len = F_INSN_SIZE(ipfw_insn_pipe); 225798943Sluigi case TOK_SKIPTO: 225898943Sluigi if (i == TOK_QUEUE) 225998943Sluigi action->opcode = O_QUEUE; 226098943Sluigi else if (i == TOK_PIPE) 226198943Sluigi action->opcode = O_PIPE; 226298943Sluigi else if (i == TOK_SKIPTO) 226398943Sluigi action->opcode = O_SKIPTO; 226498943Sluigi NEED1("missing skipto/pipe/queue number"); 226598943Sluigi action->arg1 = strtoul(*av, NULL, 10); 226698943Sluigi av++; ac--; 226798943Sluigi break; 226898943Sluigi 226998943Sluigi case TOK_DIVERT: 227098943Sluigi case TOK_TEE: 227198943Sluigi action->opcode = (i == TOK_DIVERT) ? O_DIVERT : O_TEE; 227298943Sluigi NEED1("missing divert/tee port"); 227398943Sluigi action->arg1 = strtoul(*av, NULL, 0); 227498943Sluigi if (action->arg1 == 0) { 227598943Sluigi struct servent *s; 227698943Sluigi setservent(1); 227798943Sluigi s = getservbyname(av[0], "divert"); 227898943Sluigi if (s != NULL) 227998943Sluigi action->arg1 = ntohs(s->s_port); 228098943Sluigi else 228198943Sluigi errx(EX_DATAERR, "illegal divert/tee port"); 228298943Sluigi } 228398943Sluigi ac--; av++; 228498943Sluigi break; 228598943Sluigi 228698943Sluigi case TOK_FORWARD: { 228798943Sluigi ipfw_insn_sa *p = (ipfw_insn_sa *)action; 228898943Sluigi char *s, *end; 228998943Sluigi 229098943Sluigi NEED1("missing forward address[:port]"); 229198943Sluigi 229298943Sluigi action->opcode = O_FORWARD_IP; 229398943Sluigi action->len = F_INSN_SIZE(ipfw_insn_sa); 229498943Sluigi 229598943Sluigi p->sa.sin_len = sizeof(struct sockaddr_in); 229698943Sluigi p->sa.sin_family = AF_INET; 229798943Sluigi p->sa.sin_port = 0; 229898943Sluigi /* 229998943Sluigi * locate the address-port separator (':' or ',') 230098943Sluigi */ 230198943Sluigi s = strchr(*av, ':'); 230298943Sluigi if (s == NULL) 230398943Sluigi s = strchr(*av, ','); 230498943Sluigi if (s != NULL) { 230598943Sluigi *(s++) = '\0'; 230698943Sluigi i = strtoport(s, &end, 0 /* base */, 0 /* proto */); 230798943Sluigi if (s == end) 230898943Sluigi errx(EX_DATAERR, 230998943Sluigi "illegal forwarding port ``%s''", s); 231098943Sluigi p->sa.sin_port = htons( (u_short)i ); 231198943Sluigi } 231298943Sluigi lookup_host(*av, &(p->sa.sin_addr)); 231398943Sluigi } 231498943Sluigi ac--; av++; 231598943Sluigi break; 231698943Sluigi 231798943Sluigi default: 231898943Sluigi errx(EX_DATAERR, "invalid action %s\n", *av); 231998943Sluigi } 232098943Sluigi action = next_cmd(action); 232198943Sluigi 232298943Sluigi /* 232398943Sluigi * [log [logamount N]] -- log, optional 232498943Sluigi * 232598943Sluigi * If exists, it goes first in the cmdbuf, but then it is 232698943Sluigi * skipped in the copy section to the end of the buffer. 232798943Sluigi */ 232898943Sluigi if (ac && !strncmp(*av, "log", strlen(*av))) { 232998943Sluigi ipfw_insn_log *c = (ipfw_insn_log *)cmd; 233098943Sluigi 233198943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_log); 233298943Sluigi cmd->opcode = O_LOG; 233398943Sluigi av++; ac--; 233498943Sluigi if (ac && !strncmp(*av, "logamount", strlen(*av))) { 233598943Sluigi ac--; av++; 233698943Sluigi NEED1("logamount requires argument"); 233798943Sluigi c->max_log = atoi(*av); 233898943Sluigi if (c->max_log < 0) 233998943Sluigi errx(EX_DATAERR, "logamount must be positive"); 234098943Sluigi ac--; av++; 234198943Sluigi } 234298943Sluigi cmd = next_cmd(cmd); 234398943Sluigi } 234498943Sluigi 2345101116Sluigi if (have_state) /* must be a check-state, we are done */ 234698943Sluigi goto done; 234798943Sluigi 234898943Sluigi#define OR_START(target) \ 234998943Sluigi if (ac && (*av[0] == '(' || *av[0] == '{')) { \ 235098943Sluigi if (open_par) \ 235198943Sluigi errx(EX_USAGE, "nested \"(\" not allowed\n"); \ 235298943Sluigi open_par = 1; \ 235398943Sluigi if ( (av[0])[1] == '\0') { \ 235498943Sluigi ac--; av++; \ 235598943Sluigi } else \ 235698943Sluigi (*av)++; \ 235798943Sluigi } \ 235898943Sluigi target: \ 235998943Sluigi 236098943Sluigi 236198943Sluigi#define CLOSE_PAR \ 236298943Sluigi if (open_par) { \ 236398943Sluigi if (ac && ( \ 236498943Sluigi !strncmp(*av, ")", strlen(*av)) || \ 236598943Sluigi !strncmp(*av, "}", strlen(*av)) )) { \ 236698943Sluigi open_par = 0; \ 236798943Sluigi ac--; av++; \ 236898943Sluigi } else \ 236998943Sluigi errx(EX_USAGE, "missing \")\"\n"); \ 237098943Sluigi } 237198943Sluigi 237298943Sluigi#define NOT_BLOCK \ 237398943Sluigi if (ac && !strncmp(*av, "not", strlen(*av))) { \ 237498943Sluigi if (cmd->len & F_NOT) \ 237598943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); \ 237698943Sluigi cmd->len |= F_NOT; \ 237798943Sluigi ac--; av++; \ 237898943Sluigi } 237998943Sluigi 238098943Sluigi#define OR_BLOCK(target) \ 238198943Sluigi if (ac && !strncmp(*av, "or", strlen(*av))) { \ 238298943Sluigi if (prev == NULL || open_par == 0) \ 238398943Sluigi errx(EX_DATAERR, "invalid OR block"); \ 238498943Sluigi prev->len |= F_OR; \ 238598943Sluigi ac--; av++; \ 238698943Sluigi goto target; \ 238798943Sluigi } \ 238898943Sluigi CLOSE_PAR; 238998943Sluigi 239098943Sluigi /* 239198943Sluigi * protocol, mandatory 239298943Sluigi */ 239398943Sluigi OR_START(get_proto); 239498943Sluigi NOT_BLOCK; 239598943Sluigi NEED1("missing protocol"); 239698943Sluigi { 239798943Sluigi struct protoent *pe; 239898943Sluigi 239998943Sluigi if (!strncmp(*av, "all", strlen(*av))) 240098943Sluigi ; /* same as "ip" */ 240198943Sluigi else if (!strncmp(*av, "MAC", strlen(*av))) { 240298943Sluigi /* need exactly 3 fields */ 240398943Sluigi cmd = add_mac(cmd, ac-1, av+1); /* exits in case of errors */ 240498943Sluigi ac -= 3; 240598943Sluigi av += 3; 240698943Sluigi have_mac = 1; 240798943Sluigi } else if ((proto = atoi(*av)) > 0) 240898943Sluigi ; /* all done! */ 240998943Sluigi else if ((pe = getprotobyname(*av)) != NULL) 241098943Sluigi proto = pe->p_proto; 241198943Sluigi else 241298943Sluigi errx(EX_DATAERR, "invalid protocol ``%s''", *av); 241398943Sluigi av++; ac--; 241498943Sluigi if (proto != IPPROTO_IP) 241598943Sluigi fill_cmd(cmd, O_PROTO, 0, proto); 241698943Sluigi } 241798943Sluigi cmd = next_cmd(cmd); 241898943Sluigi OR_BLOCK(get_proto); 241998943Sluigi 242098943Sluigi /* 242198943Sluigi * "from", mandatory (unless we have a MAC address) 242298943Sluigi */ 242398943Sluigi if (!ac || strncmp(*av, "from", strlen(*av))) { 242498943Sluigi if (have_mac) /* we do not need a "to" address */ 242598943Sluigi goto read_to; 242698943Sluigi errx(EX_USAGE, "missing ``from''"); 242798943Sluigi } 242898943Sluigi ac--; av++; 242998943Sluigi 243098943Sluigi /* 243198943Sluigi * source IP, mandatory 243298943Sluigi */ 243398943Sluigi OR_START(source_ip); 243498943Sluigi NOT_BLOCK; /* optional "not" */ 243598943Sluigi NEED1("missing source address"); 243698943Sluigi 243798943Sluigi /* source -- mandatory */ 243898943Sluigi fill_ip((ipfw_insn_ip *)cmd, *av); 243998943Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 244098943Sluigi cmd->opcode = O_IP_SRC_SET; 244198943Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 244298943Sluigi cmd->opcode = O_IP_SRC_ME; 244398943Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 244498943Sluigi cmd->opcode = O_IP_SRC; 244598943Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_ip)) /* addr/mask */ 244698943Sluigi cmd->opcode = O_IP_SRC_MASK; 244798943Sluigi /* otherwise len will be zero and the command skipped */ 244898943Sluigi ac--; av++; 244998943Sluigi prev = cmd; /* in case we need to backtrack */ 245098943Sluigi cmd = next_cmd(cmd); 245198943Sluigi OR_BLOCK(source_ip); 245298943Sluigi 245398943Sluigi /* 245498943Sluigi * source ports, optional 245598943Sluigi */ 245698943Sluigi NOT_BLOCK; /* optional "not" */ 245798943Sluigi if (ac && fill_newports((ipfw_insn_u16 *)cmd, *av, proto)) { 245898943Sluigi /* XXX todo: check that we have a protocol with ports */ 245998943Sluigi cmd->opcode = O_IP_SRCPORT; 246098943Sluigi ac--; 246198943Sluigi av++; 246298943Sluigi cmd = next_cmd(cmd); 246398943Sluigi } 246498943Sluigi 246598943Sluigiread_to: 246698943Sluigi /* 246798943Sluigi * "to", mandatory (unless we have a MAC address 246898943Sluigi */ 246998943Sluigi if (!ac || strncmp(*av, "to", strlen(*av))) { 247098943Sluigi if (have_mac) 247198943Sluigi goto read_options; 247298943Sluigi errx(EX_USAGE, "missing ``to''"); 247398943Sluigi } 247498943Sluigi av++; ac--; 247598943Sluigi 247698943Sluigi /* 247798943Sluigi * destination, mandatory 247898943Sluigi */ 247998943Sluigi OR_START(dest_ip); 248098943Sluigi NOT_BLOCK; /* optional "not" */ 248198943Sluigi NEED1("missing dst address"); 248298943Sluigi fill_ip((ipfw_insn_ip *)cmd, *av); 248398943Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 248498943Sluigi ; 248598943Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 248698943Sluigi cmd->opcode = O_IP_DST_ME; 248798943Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 248898943Sluigi cmd->opcode = O_IP_DST; 248998943Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_ip)) /* addr/mask */ 249098943Sluigi cmd->opcode = O_IP_DST_MASK; 249198943Sluigi ac--; 249298943Sluigi av++; 249398943Sluigi prev = cmd; 249498943Sluigi cmd = next_cmd(cmd); 249598943Sluigi OR_BLOCK(dest_ip); 249698943Sluigi 249798943Sluigi /* 249898943Sluigi * dest. ports, optional 249998943Sluigi */ 250098943Sluigi NOT_BLOCK; /* optional "not" */ 250198943Sluigi if (ac && fill_newports((ipfw_insn_u16 *)cmd, *av, proto)) { 250298943Sluigi /* XXX todo: check that we have a protocol with ports */ 250398943Sluigi cmd->opcode = O_IP_DSTPORT; 250498943Sluigi ac--; 250598943Sluigi av++; 250698943Sluigi cmd += F_LEN(cmd); 250798943Sluigi } 250898943Sluigi 250998943Sluigiread_options: 251098943Sluigi prev = NULL; 251198943Sluigi while (ac) { 251298943Sluigi char *s = *av; 251398943Sluigi ipfw_insn_u32 *cmd32 = (ipfw_insn_u32 *)cmd; /* alias */ 251498943Sluigi 251598943Sluigi if (*s == '!') { /* alternate syntax for NOT */ 251698943Sluigi if (cmd->len & F_NOT) 251798943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 251898943Sluigi cmd->len = F_NOT; 251998943Sluigi s++; 252098943Sluigi } 252198943Sluigi i = match_token(rule_options, s); 252298943Sluigi ac--; av++; 252398943Sluigi switch(i) { 252498943Sluigi case TOK_NOT: 252598943Sluigi if (cmd->len & F_NOT) 252698943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 252798943Sluigi cmd->len = F_NOT; 252898943Sluigi break; 252998943Sluigi 253098943Sluigi case TOK_OR: 253198943Sluigi if (prev == NULL) 253298943Sluigi errx(EX_USAGE, "invalid \"or\" block\n"); 253398943Sluigi prev->len |= F_OR; 253498943Sluigi break; 253598943Sluigi 253698943Sluigi case TOK_IN: 253798943Sluigi fill_cmd(cmd, O_IN, 0, 0); 253898943Sluigi break; 253998943Sluigi 254098943Sluigi case TOK_OUT: 254198943Sluigi cmd->len ^= F_NOT; /* toggle F_NOT */ 254298943Sluigi fill_cmd(cmd, O_IN, 0, 0); 254398943Sluigi break; 254498943Sluigi 254598943Sluigi case TOK_FRAG: 254698943Sluigi fill_cmd(cmd, O_FRAG, 0, 0); 254798943Sluigi break; 254898943Sluigi 254998943Sluigi case TOK_LAYER2: 255098943Sluigi fill_cmd(cmd, O_LAYER2, 0, 0); 255198943Sluigi break; 255298943Sluigi 255398943Sluigi case TOK_XMIT: 255498943Sluigi case TOK_RECV: 255598943Sluigi case TOK_VIA: 255698943Sluigi NEED1("recv, xmit, via require interface name" 255798943Sluigi " or address"); 255898943Sluigi fill_iface((ipfw_insn_if *)cmd, av[0]); 255998943Sluigi ac--; av++; 256098943Sluigi if (F_LEN(cmd) == 0) /* not a valid address */ 256198943Sluigi break; 256298943Sluigi if (i == TOK_XMIT) 256398943Sluigi cmd->opcode = O_XMIT; 256498943Sluigi else if (i == TOK_RECV) 256598943Sluigi cmd->opcode = O_RECV; 256698943Sluigi else if (i == TOK_VIA) 256798943Sluigi cmd->opcode = O_VIA; 256898943Sluigi break; 256998943Sluigi 257099475Sluigi case TOK_ICMPTYPES: 257199475Sluigi NEED1("icmptypes requires list of types"); 257299475Sluigi fill_icmptypes((ipfw_insn_u32 *)cmd, *av); 257399475Sluigi av++; ac--; 257499475Sluigi break; 257599475Sluigi 257698943Sluigi case TOK_IPTTL: 257798943Sluigi NEED1("ipttl requires TTL"); 257898943Sluigi fill_cmd(cmd, O_IPTTL, 0, strtoul(*av, NULL, 0)); 257998943Sluigi ac--; av++; 258098943Sluigi break; 258198943Sluigi 258298943Sluigi case TOK_IPID: 258398943Sluigi NEED1("ipid requires length"); 258498943Sluigi fill_cmd(cmd, O_IPID, 0, strtoul(*av, NULL, 0)); 258598943Sluigi ac--; av++; 258698943Sluigi break; 258798943Sluigi 258898943Sluigi case TOK_IPLEN: 258998943Sluigi NEED1("iplen requires length"); 259098943Sluigi fill_cmd(cmd, O_IPLEN, 0, strtoul(*av, NULL, 0)); 259198943Sluigi ac--; av++; 259298943Sluigi break; 259398943Sluigi 259498943Sluigi case TOK_IPVER: 259598943Sluigi NEED1("ipver requires version"); 259698943Sluigi fill_cmd(cmd, O_IPVER, 0, strtoul(*av, NULL, 0)); 259798943Sluigi ac--; av++; 259898943Sluigi break; 259998943Sluigi 260099475Sluigi case TOK_IPPRECEDENCE: 260199475Sluigi NEED1("ipprecedence requires value"); 260299475Sluigi fill_cmd(cmd, O_IPPRECEDENCE, 0, 260399475Sluigi (strtoul(*av, NULL, 0) & 7) << 5); 260499475Sluigi ac--; av++; 260599475Sluigi break; 260699475Sluigi 260798943Sluigi case TOK_IPOPTS: 260898943Sluigi NEED1("missing argument for ipoptions"); 2609101116Sluigi fill_flags(cmd, O_IPOPT, f_ipopts, *av); 261098943Sluigi ac--; av++; 261198943Sluigi break; 261298943Sluigi 261399475Sluigi case TOK_IPTOS: 261499475Sluigi NEED1("missing argument for iptos"); 2615101116Sluigi fill_flags(cmd, O_IPTOS, f_iptos, *av); 261699475Sluigi ac--; av++; 261799475Sluigi break; 261899475Sluigi 261998943Sluigi case TOK_UID: 262098943Sluigi NEED1("uid requires argument"); 262198943Sluigi { 262298943Sluigi char *end; 262398943Sluigi uid_t uid; 262498943Sluigi struct passwd *pwd; 262598943Sluigi 262698943Sluigi cmd->opcode = O_UID; 262798943Sluigi uid = strtoul(*av, &end, 0); 262898943Sluigi pwd = (*end == '\0') ? getpwuid(uid) : getpwnam(*av); 262998943Sluigi if (pwd == NULL) 263098943Sluigi errx(EX_DATAERR, "uid \"%s\" nonexistent", *av); 263198943Sluigi cmd32->d[0] = uid; 263298943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 263398943Sluigi ac--; av++; 263498943Sluigi } 263598943Sluigi break; 263698943Sluigi 263798943Sluigi case TOK_GID: 263898943Sluigi NEED1("gid requires argument"); 263998943Sluigi { 264098943Sluigi char *end; 264198943Sluigi gid_t gid; 264298943Sluigi struct group *grp; 264398943Sluigi 264498943Sluigi cmd->opcode = O_GID; 264598943Sluigi gid = strtoul(*av, &end, 0); 264698943Sluigi grp = (*end == '\0') ? getgrgid(gid) : getgrnam(*av); 264798943Sluigi if (grp == NULL) 264898943Sluigi errx(EX_DATAERR, "gid \"%s\" nonexistent", *av); 264998943Sluigi 265098943Sluigi cmd32->d[0] = gid; 265198943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 265298943Sluigi ac--; av++; 265398943Sluigi } 265498943Sluigi break; 265598943Sluigi 265698943Sluigi case TOK_ESTAB: 265798943Sluigi fill_cmd(cmd, O_ESTAB, 0, 0); 265898943Sluigi break; 265998943Sluigi 266098943Sluigi case TOK_SETUP: 266198943Sluigi fill_cmd(cmd, O_TCPFLAGS, 0, 266298943Sluigi (TH_SYN) | ( (TH_ACK) & 0xff) <<8 ); 266398943Sluigi break; 266498943Sluigi 266598943Sluigi case TOK_TCPOPTS: 266698943Sluigi NEED1("missing argument for tcpoptions"); 266798943Sluigi fill_flags(cmd, O_TCPOPTS, f_tcpopts, *av); 266898943Sluigi ac--; av++; 266998943Sluigi break; 267098943Sluigi 267198943Sluigi case TOK_TCPSEQ: 267298943Sluigi case TOK_TCPACK: 267398943Sluigi NEED1("tcpseq/tcpack requires argument"); 267498943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 267598943Sluigi cmd->opcode = (i == TOK_TCPSEQ) ? O_TCPSEQ : O_TCPACK; 267698943Sluigi cmd32->d[0] = htonl(strtoul(*av, NULL, 0)); 267798943Sluigi ac--; av++; 267898943Sluigi break; 267998943Sluigi 268098943Sluigi case TOK_TCPWIN: 268198943Sluigi NEED1("tcpwin requires length"); 268298943Sluigi fill_cmd(cmd, O_TCPWIN, 0, 268398943Sluigi htons(strtoul(*av, NULL, 0))); 268498943Sluigi ac--; av++; 268598943Sluigi break; 268698943Sluigi 268798943Sluigi case TOK_TCPFLAGS: 268898943Sluigi NEED1("missing argument for tcpflags"); 268998943Sluigi cmd->opcode = O_TCPFLAGS; 269098943Sluigi fill_flags(cmd, O_TCPFLAGS, f_tcpflags, *av); 269198943Sluigi ac--; av++; 269298943Sluigi break; 269398943Sluigi 269498943Sluigi case TOK_KEEPSTATE: 269599909Sluigi if (have_state) 2696101116Sluigi errx(EX_USAGE, "only one of keep-state " 269799909Sluigi "and limit is allowed"); 2698101116Sluigi have_state = cmd; 269998943Sluigi fill_cmd(cmd, O_KEEP_STATE, 0, 0); 270098943Sluigi break; 270198943Sluigi 270298943Sluigi case TOK_LIMIT: 270398943Sluigi NEED1("limit needs mask and # of connections"); 270499909Sluigi if (have_state) 2705101116Sluigi errx(EX_USAGE, "only one of keep-state " 270699909Sluigi "and limit is allowed"); 2707101116Sluigi have_state = cmd; 270898943Sluigi { 270998943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 271098943Sluigi 271198943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_limit); 271298943Sluigi cmd->opcode = O_LIMIT; 271398943Sluigi c->limit_mask = 0; 271498943Sluigi c->conn_limit = 0; 271598943Sluigi for (; ac >1 ;) { 271698943Sluigi int val; 271798943Sluigi 271898943Sluigi val = match_token(limit_masks, *av); 271998943Sluigi if (val <= 0) 272098943Sluigi break; 272198943Sluigi c->limit_mask |= val; 272298943Sluigi ac--; av++; 272398943Sluigi } 272498943Sluigi c->conn_limit = atoi(*av); 272598943Sluigi if (c->conn_limit == 0) 272698943Sluigi errx(EX_USAGE, "limit: limit must be >0"); 272798943Sluigi if (c->limit_mask == 0) 272898943Sluigi errx(EX_USAGE, "missing limit mask"); 272998943Sluigi ac--; av++; 273098943Sluigi } 273198943Sluigi break; 273298943Sluigi 273398943Sluigi default: 273498943Sluigi errx(EX_USAGE, "unrecognised option [%d] %s\n", i, s); 273598943Sluigi } 273698943Sluigi if (F_LEN(cmd) > 0) { /* prepare to advance */ 273798943Sluigi prev = cmd; 273898943Sluigi cmd = next_cmd(cmd); 273998943Sluigi } 274098943Sluigi } 274198943Sluigi 274298943Sluigidone: 274398943Sluigi /* 274498943Sluigi * Now copy stuff into the rule. 274598943Sluigi * If we have a keep-state option, the first instruction 274698943Sluigi * must be a PROBE_STATE (which is generated here). 274798943Sluigi * If we have a LOG option, it was stored as the first command, 274898943Sluigi * and now must be moved to the top of the action part. 274998943Sluigi */ 275098943Sluigi dst = (ipfw_insn *)rule->cmd; 275198943Sluigi 275298943Sluigi /* 275398943Sluigi * generate O_PROBE_STATE if necessary 275498943Sluigi */ 2755101116Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 275698943Sluigi fill_cmd(dst, O_PROBE_STATE, 0, 0); 275798943Sluigi dst = next_cmd(dst); 275898943Sluigi } 275998943Sluigi /* 2760101116Sluigi * copy all commands but O_LOG, O_KEEP_STATE, O_LIMIT 276198943Sluigi */ 276298943Sluigi for (src = (ipfw_insn *)cmdbuf; src != cmd; src += i) { 276398943Sluigi i = F_LEN(src); 276498943Sluigi 2765101116Sluigi switch (src->opcode) { 2766101116Sluigi case O_LOG: 2767101116Sluigi case O_KEEP_STATE: 2768101116Sluigi case O_LIMIT: 2769101116Sluigi break; 2770101116Sluigi default: 277198943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 277298943Sluigi dst += i; 277398943Sluigi } 277498943Sluigi } 277598943Sluigi 277698943Sluigi /* 2777101116Sluigi * put back the have_state command as last opcode 2778101116Sluigi */ 2779101116Sluigi if (have_state) { 2780101116Sluigi i = F_LEN(have_state); 2781101116Sluigi bcopy(have_state, dst, i * sizeof(u_int32_t)); 2782101116Sluigi dst += i; 2783101116Sluigi } 2784101116Sluigi /* 278598943Sluigi * start action section 278698943Sluigi */ 278798943Sluigi rule->act_ofs = dst - rule->cmd; 278898943Sluigi 278998943Sluigi /* 279098943Sluigi * put back O_LOG if necessary 279198943Sluigi */ 279298943Sluigi src = (ipfw_insn *)cmdbuf; 279398943Sluigi if ( src->opcode == O_LOG ) { 279498943Sluigi i = F_LEN(src); 279598943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 279698943Sluigi dst += i; 279798943Sluigi } 279898943Sluigi /* 279998943Sluigi * copy all other actions 280098943Sluigi */ 280198943Sluigi for (src = (ipfw_insn *)actbuf; src != action; src += i) { 280298943Sluigi i = F_LEN(src); 280398943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 280498943Sluigi dst += i; 280598943Sluigi } 280698943Sluigi 280798943Sluigi rule->cmd_len = (u_int32_t *)dst - (u_int32_t *)(rule->cmd); 280898943Sluigi i = (void *)dst - (void *)rule; 280998943Sluigi if (getsockopt(s, IPPROTO_IP, IP_FW_ADD, rule, &i) == -1) 281098943Sluigi err(EX_UNAVAILABLE, "getsockopt(%s)", "IP_FW_ADD"); 281198943Sluigi if (!do_quiet) 281298943Sluigi show_ipfw(rule); 281398943Sluigi} 281498943Sluigi 281598943Sluigistatic void 281698943Sluigizero (int ac, char *av[]) 281798943Sluigi{ 281898943Sluigi int rulenum; 281998943Sluigi int failed = EX_OK; 282098943Sluigi 282198943Sluigi av++; ac--; 282298943Sluigi 282398943Sluigi if (!ac) { 282498943Sluigi /* clear all entries */ 282598943Sluigi if (setsockopt(s, IPPROTO_IP, IP_FW_ZERO, NULL, 0) < 0) 282698943Sluigi err(EX_UNAVAILABLE, "setsockopt(%s)", "IP_FW_ZERO"); 282798943Sluigi if (!do_quiet) 282898943Sluigi printf("Accounting cleared.\n"); 282998943Sluigi 283098943Sluigi return; 283198943Sluigi } 283298943Sluigi 283398943Sluigi while (ac) { 283498943Sluigi /* Rule number */ 283598943Sluigi if (isdigit(**av)) { 283698943Sluigi rulenum = atoi(*av); 283798943Sluigi av++; 283898943Sluigi ac--; 283998943Sluigi if (setsockopt(s, IPPROTO_IP, 284098943Sluigi IP_FW_ZERO, &rulenum, sizeof rulenum)) { 284198943Sluigi warn("rule %u: setsockopt(IP_FW_ZERO)", 284298943Sluigi rulenum); 284398943Sluigi failed = EX_UNAVAILABLE; 284498943Sluigi } else if (!do_quiet) 284598943Sluigi printf("Entry %d cleared\n", rulenum); 284698943Sluigi } else { 284798943Sluigi errx(EX_USAGE, "invalid rule number ``%s''", *av); 284898943Sluigi } 284998943Sluigi } 285098943Sluigi if (failed != EX_OK) 285198943Sluigi exit(failed); 285298943Sluigi} 285398943Sluigi 285498943Sluigistatic void 285598943Sluigiresetlog (int ac, char *av[]) 285698943Sluigi{ 285798943Sluigi int rulenum; 285898943Sluigi int failed = EX_OK; 285998943Sluigi 286098943Sluigi av++; ac--; 286198943Sluigi 286298943Sluigi if (!ac) { 286398943Sluigi /* clear all entries */ 286498943Sluigi if (setsockopt(s, IPPROTO_IP, IP_FW_RESETLOG, NULL, 0) < 0) 286598943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_FW_RESETLOG)"); 286698943Sluigi if (!do_quiet) 286798943Sluigi printf("Logging counts reset.\n"); 286898943Sluigi 286998943Sluigi return; 287098943Sluigi } 287198943Sluigi 287298943Sluigi while (ac) { 287398943Sluigi /* Rule number */ 287498943Sluigi if (isdigit(**av)) { 287598943Sluigi rulenum = atoi(*av); 287698943Sluigi av++; 287798943Sluigi ac--; 287898943Sluigi if (setsockopt(s, IPPROTO_IP, 287998943Sluigi IP_FW_RESETLOG, &rulenum, sizeof rulenum)) { 288098943Sluigi warn("rule %u: setsockopt(IP_FW_RESETLOG)", 288198943Sluigi rulenum); 288298943Sluigi failed = EX_UNAVAILABLE; 288398943Sluigi } else if (!do_quiet) 288498943Sluigi printf("Entry %d logging count reset\n", 288598943Sluigi rulenum); 288698943Sluigi } else { 288798943Sluigi errx(EX_DATAERR, "invalid rule number ``%s''", *av); 288898943Sluigi } 288998943Sluigi } 289098943Sluigi if (failed != EX_OK) 289198943Sluigi exit(failed); 289298943Sluigi} 289398943Sluigi 289498943Sluigistatic void 289598943Sluigiflush() 289698943Sluigi{ 289798943Sluigi int cmd = do_pipe ? IP_DUMMYNET_FLUSH : IP_FW_FLUSH; 289898943Sluigi 289998943Sluigi if (!do_force && !do_quiet) { /* need to ask user */ 290098943Sluigi int c; 290198943Sluigi 290298943Sluigi printf("Are you sure? [yn] "); 290398943Sluigi fflush(stdout); 290498943Sluigi do { 290598943Sluigi c = toupper(getc(stdin)); 290698943Sluigi while (c != '\n' && getc(stdin) != '\n') 290798943Sluigi if (feof(stdin)) 290898943Sluigi return; /* and do not flush */ 290998943Sluigi } while (c != 'Y' && c != 'N'); 291098943Sluigi printf("\n"); 291198943Sluigi if (c == 'N') /* user said no */ 291298943Sluigi return; 291398943Sluigi } 291498943Sluigi if (setsockopt(s, IPPROTO_IP, cmd, NULL, 0) < 0) 291598943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_%s_FLUSH)", 291698943Sluigi do_pipe ? "DUMMYNET" : "FW"); 291798943Sluigi if (!do_quiet) 291898943Sluigi printf("Flushed all %s.\n", do_pipe ? "pipes" : "rules"); 291998943Sluigi} 292098943Sluigi 292198943Sluigistatic int 292298943Sluigiipfw_main(int ac, char **av) 292398943Sluigi{ 292498943Sluigi int ch; 292598943Sluigi 292698943Sluigi if (ac == 1) 292798943Sluigi show_usage(); 292898943Sluigi 292998943Sluigi /* Set the force flag for non-interactive processes */ 293098943Sluigi do_force = !isatty(STDIN_FILENO); 293198943Sluigi 293298943Sluigi optind = optreset = 1; 293398943Sluigi while ((ch = getopt(ac, av, "hs:adefNqtv")) != -1) 293498943Sluigi switch (ch) { 293598943Sluigi case 'h': /* help */ 293698943Sluigi help(); 293798943Sluigi break; /* NOTREACHED */ 293898943Sluigi 293998943Sluigi case 's': /* sort */ 294098943Sluigi do_sort = atoi(optarg); 294198943Sluigi break; 294298943Sluigi case 'a': 294398943Sluigi do_acct = 1; 294498943Sluigi break; 294598943Sluigi case 'd': 294698943Sluigi do_dynamic = 1; 294798943Sluigi break; 294898943Sluigi case 'e': 294998943Sluigi do_expired = 1; 295098943Sluigi break; 295198943Sluigi case 'f': 295298943Sluigi do_force = 1; 295398943Sluigi break; 295498943Sluigi case 'N': 295598943Sluigi do_resolv = 1; 295698943Sluigi break; 295798943Sluigi case 'q': 295898943Sluigi do_quiet = 1; 295998943Sluigi break; 296098943Sluigi case 't': 296198943Sluigi do_time = 1; 296298943Sluigi break; 296398943Sluigi case 'v': /* verbose */ 296498943Sluigi verbose++; 296598943Sluigi break; 296698943Sluigi default: 296798943Sluigi show_usage(); 296898943Sluigi } 296998943Sluigi 297098943Sluigi ac -= optind; 297198943Sluigi av += optind; 297298943Sluigi NEED1("bad arguments, for usage summary ``ipfw''"); 297398943Sluigi 297498943Sluigi /* 297598943Sluigi * optional: pipe or queue 297698943Sluigi */ 297798943Sluigi if (!strncmp(*av, "pipe", strlen(*av))) { 297898943Sluigi do_pipe = 1; 297998943Sluigi ac--; 298098943Sluigi av++; 298198943Sluigi } else if (!strncmp(*av, "queue", strlen(*av))) { 298298943Sluigi do_pipe = 2; 298398943Sluigi ac--; 298498943Sluigi av++; 298598943Sluigi } 298698943Sluigi NEED1("missing command"); 298798943Sluigi 298898943Sluigi /* 298998943Sluigi * for pipes and queues we normally say 'pipe NN config' 299098943Sluigi * but the code is easier to parse as 'pipe config NN' 299198943Sluigi * so we swap the two arguments. 299298943Sluigi */ 299398943Sluigi if (do_pipe > 0 && ac > 1 && *av[0] >= '0' && *av[0] <= '9') { 299498943Sluigi char *p = av[0]; 299598943Sluigi av[0] = av[1]; 299698943Sluigi av[1] = p; 299798943Sluigi } 299898943Sluigi if (!strncmp(*av, "add", strlen(*av))) 299998943Sluigi add(ac, av); 300098943Sluigi else if (do_pipe && !strncmp(*av, "config", strlen(*av))) 300198943Sluigi config_pipe(ac, av); 300298943Sluigi else if (!strncmp(*av, "delete", strlen(*av))) 300398943Sluigi delete(ac, av); 300498943Sluigi else if (!strncmp(*av, "flush", strlen(*av))) 300598943Sluigi flush(); 300698943Sluigi else if (!strncmp(*av, "zero", strlen(*av))) 300798943Sluigi zero(ac, av); 300898943Sluigi else if (!strncmp(*av, "resetlog", strlen(*av))) 300998943Sluigi resetlog(ac, av); 301098943Sluigi else if (!strncmp(*av, "print", strlen(*av)) || 301198943Sluigi !strncmp(*av, "list", strlen(*av))) 301298943Sluigi list(ac, av); 301398943Sluigi else if (!strncmp(*av, "show", strlen(*av))) { 301498943Sluigi do_acct++; 301598943Sluigi list(ac, av); 301698943Sluigi } else 301798943Sluigi errx(EX_USAGE, "bad command `%s'", *av); 301898943Sluigi return 0; 301998943Sluigi} 302098943Sluigi 302198943Sluigi 302298943Sluigistatic void 302398943Sluigiipfw_readfile(int ac, char *av[]) 302498943Sluigi{ 302598943Sluigi#define MAX_ARGS 32 302698943Sluigi#define WHITESP " \t\f\v\n\r" 302798943Sluigi char buf[BUFSIZ]; 302898943Sluigi char *a, *p, *args[MAX_ARGS], *cmd = NULL; 302998943Sluigi char linename[10]; 303098943Sluigi int i=0, lineno=0, qflag=0, pflag=0, status; 303198943Sluigi FILE *f = NULL; 303298943Sluigi pid_t preproc = 0; 303398943Sluigi int c; 303498943Sluigi 303598943Sluigi while ((c = getopt(ac, av, "D:U:p:q")) != -1) 303698943Sluigi switch(c) { 303798943Sluigi case 'D': 303898943Sluigi if (!pflag) 303998943Sluigi errx(EX_USAGE, "-D requires -p"); 304098943Sluigi if (i > MAX_ARGS - 2) 304198943Sluigi errx(EX_USAGE, 304298943Sluigi "too many -D or -U options"); 304398943Sluigi args[i++] = "-D"; 304498943Sluigi args[i++] = optarg; 304598943Sluigi break; 304698943Sluigi 304798943Sluigi case 'U': 304898943Sluigi if (!pflag) 304998943Sluigi errx(EX_USAGE, "-U requires -p"); 305098943Sluigi if (i > MAX_ARGS - 2) 305198943Sluigi errx(EX_USAGE, 305298943Sluigi "too many -D or -U options"); 305398943Sluigi args[i++] = "-U"; 305498943Sluigi args[i++] = optarg; 305598943Sluigi break; 305698943Sluigi 305798943Sluigi case 'p': 305898943Sluigi pflag = 1; 305998943Sluigi cmd = optarg; 306098943Sluigi args[0] = cmd; 306198943Sluigi i = 1; 306298943Sluigi break; 306398943Sluigi 306498943Sluigi case 'q': 306598943Sluigi qflag = 1; 306698943Sluigi break; 306798943Sluigi 306898943Sluigi default: 306998943Sluigi errx(EX_USAGE, "bad arguments, for usage" 307098943Sluigi " summary ``ipfw''"); 307198943Sluigi } 307298943Sluigi 307398943Sluigi av += optind; 307498943Sluigi ac -= optind; 307598943Sluigi if (ac != 1) 307698943Sluigi errx(EX_USAGE, "extraneous filename arguments"); 307798943Sluigi 307898943Sluigi if ((f = fopen(av[0], "r")) == NULL) 307998943Sluigi err(EX_UNAVAILABLE, "fopen: %s", av[0]); 308098943Sluigi 308198943Sluigi if (pflag) { 308298943Sluigi /* pipe through preprocessor (cpp or m4) */ 308398943Sluigi int pipedes[2]; 308498943Sluigi 308598943Sluigi args[i] = 0; 308698943Sluigi 308798943Sluigi if (pipe(pipedes) == -1) 308898943Sluigi err(EX_OSERR, "cannot create pipe"); 308998943Sluigi 309098943Sluigi switch((preproc = fork())) { 309198943Sluigi case -1: 309298943Sluigi err(EX_OSERR, "cannot fork"); 309398943Sluigi 309498943Sluigi case 0: 309598943Sluigi /* child */ 309698943Sluigi if (dup2(fileno(f), 0) == -1 309798943Sluigi || dup2(pipedes[1], 1) == -1) 309898943Sluigi err(EX_OSERR, "dup2()"); 309998943Sluigi fclose(f); 310098943Sluigi close(pipedes[1]); 310198943Sluigi close(pipedes[0]); 310298943Sluigi execvp(cmd, args); 310398943Sluigi err(EX_OSERR, "execvp(%s) failed", cmd); 310498943Sluigi 310598943Sluigi default: 310698943Sluigi /* parent */ 310798943Sluigi fclose(f); 310898943Sluigi close(pipedes[1]); 310998943Sluigi if ((f = fdopen(pipedes[0], "r")) == NULL) { 311098943Sluigi int savederrno = errno; 311198943Sluigi 311298943Sluigi (void)kill(preproc, SIGTERM); 311398943Sluigi errno = savederrno; 311498943Sluigi err(EX_OSERR, "fdopen()"); 311598943Sluigi } 311698943Sluigi } 311798943Sluigi } 311898943Sluigi 311998943Sluigi while (fgets(buf, BUFSIZ, f)) { 312098943Sluigi lineno++; 312198943Sluigi sprintf(linename, "Line %d", lineno); 312298943Sluigi args[0] = linename; 312398943Sluigi 312498943Sluigi if (*buf == '#') 312598943Sluigi continue; 312698943Sluigi if ((p = strchr(buf, '#')) != NULL) 312798943Sluigi *p = '\0'; 312898943Sluigi i = 1; 312998943Sluigi if (qflag) 313098943Sluigi args[i++] = "-q"; 313198943Sluigi for (a = strtok(buf, WHITESP); 313298943Sluigi a && i < MAX_ARGS; a = strtok(NULL, WHITESP), i++) 313398943Sluigi args[i] = a; 313498943Sluigi if (i == (qflag? 2: 1)) 313598943Sluigi continue; 313698943Sluigi if (i == MAX_ARGS) 313798943Sluigi errx(EX_USAGE, "%s: too many arguments", 313898943Sluigi linename); 313998943Sluigi args[i] = NULL; 314098943Sluigi 314198943Sluigi ipfw_main(i, args); 314298943Sluigi } 314398943Sluigi fclose(f); 314498943Sluigi if (pflag) { 314598943Sluigi if (waitpid(preproc, &status, 0) == -1) 314698943Sluigi errx(EX_OSERR, "waitpid()"); 314798943Sluigi if (WIFEXITED(status) && WEXITSTATUS(status) != EX_OK) 314898943Sluigi errx(EX_UNAVAILABLE, 314998943Sluigi "preprocessor exited with status %d", 315098943Sluigi WEXITSTATUS(status)); 315198943Sluigi else if (WIFSIGNALED(status)) 315298943Sluigi errx(EX_UNAVAILABLE, 315398943Sluigi "preprocessor exited with signal %d", 315498943Sluigi WTERMSIG(status)); 315598943Sluigi } 315698943Sluigi} 315798943Sluigi 315898943Sluigiint 315998943Sluigimain(int ac, char *av[]) 316098943Sluigi{ 316198943Sluigi s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); 316298943Sluigi if (s < 0) 316398943Sluigi err(EX_UNAVAILABLE, "socket"); 316498943Sluigi 316598943Sluigi /* 316698943Sluigi * If the last argument is an absolute pathname, interpret it 316798943Sluigi * as a file to be preprocessed. 316898943Sluigi */ 316998943Sluigi 317098943Sluigi if (ac > 1 && av[ac - 1][0] == '/' && access(av[ac - 1], R_OK) == 0) 317198943Sluigi ipfw_readfile(ac, av); 317298943Sluigi else 317398943Sluigi ipfw_main(ac, av); 317498943Sluigi return EX_OK; 317598943Sluigi} 3176