ipfw2.c revision 106504
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 106504 2002-11-06 14:57:18Z maxim $ 2198943Sluigi */ 2298943Sluigi 2398943Sluigi#include <sys/param.h> 2498943Sluigi#include <sys/mbuf.h> 2598943Sluigi#include <sys/socket.h> 2698943Sluigi#include <sys/sockio.h> 2798943Sluigi#include <sys/sysctl.h> 2898943Sluigi#include <sys/time.h> 2998943Sluigi#include <sys/wait.h> 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 */ 68102098Sluigi do_compact, /* show rules in compact mode */ 69101628Sluigi show_sets, /* display rule sets */ 7098943Sluigi verbose; 7198943Sluigi 7298943Sluigi#define IP_MASK_ALL 0xffffffff 7398943Sluigi 7498943Sluigi/* 7598943Sluigi * structure to hold flag names and associated values to be 7698943Sluigi * set in the appropriate masks. 7798943Sluigi * A NULL string terminates the array. 7898943Sluigi * Often, an element with 0 value contains an error string. 7998943Sluigi * 8098943Sluigi */ 8198943Sluigistruct _s_x { 8298943Sluigi char *s; 8398943Sluigi int x; 8498943Sluigi}; 8598943Sluigi 8698943Sluigistatic struct _s_x f_tcpflags[] = { 8798943Sluigi { "syn", TH_SYN }, 8898943Sluigi { "fin", TH_FIN }, 8998943Sluigi { "ack", TH_ACK }, 9098943Sluigi { "psh", TH_PUSH }, 9198943Sluigi { "rst", TH_RST }, 9298943Sluigi { "urg", TH_URG }, 9398943Sluigi { "tcp flag", 0 }, 9498943Sluigi { NULL, 0 } 9598943Sluigi}; 9698943Sluigi 9798943Sluigistatic struct _s_x f_tcpopts[] = { 9898943Sluigi { "mss", IP_FW_TCPOPT_MSS }, 9998943Sluigi { "maxseg", IP_FW_TCPOPT_MSS }, 10098943Sluigi { "window", IP_FW_TCPOPT_WINDOW }, 10198943Sluigi { "sack", IP_FW_TCPOPT_SACK }, 10298943Sluigi { "ts", IP_FW_TCPOPT_TS }, 10398943Sluigi { "timestamp", IP_FW_TCPOPT_TS }, 10498943Sluigi { "cc", IP_FW_TCPOPT_CC }, 10598943Sluigi { "tcp option", 0 }, 10698943Sluigi { NULL, 0 } 10798943Sluigi}; 10898943Sluigi 10998943Sluigi/* 11098943Sluigi * IP options span the range 0 to 255 so we need to remap them 11198943Sluigi * (though in fact only the low 5 bits are significant). 11298943Sluigi */ 11398943Sluigistatic struct _s_x f_ipopts[] = { 11498943Sluigi { "ssrr", IP_FW_IPOPT_SSRR}, 11598943Sluigi { "lsrr", IP_FW_IPOPT_LSRR}, 11698943Sluigi { "rr", IP_FW_IPOPT_RR}, 11798943Sluigi { "ts", IP_FW_IPOPT_TS}, 11898943Sluigi { "ip option", 0 }, 11998943Sluigi { NULL, 0 } 12098943Sluigi}; 12198943Sluigi 12298943Sluigistatic struct _s_x f_iptos[] = { 12398943Sluigi { "lowdelay", IPTOS_LOWDELAY}, 12498943Sluigi { "throughput", IPTOS_THROUGHPUT}, 12598943Sluigi { "reliability", IPTOS_RELIABILITY}, 12698943Sluigi { "mincost", IPTOS_MINCOST}, 12798943Sluigi { "congestion", IPTOS_CE}, 12898943Sluigi { "ecntransport", IPTOS_ECT}, 12998943Sluigi { "ip tos option", 0}, 13098943Sluigi { NULL, 0 } 13198943Sluigi}; 13298943Sluigi 13398943Sluigistatic struct _s_x limit_masks[] = { 13498943Sluigi {"all", DYN_SRC_ADDR|DYN_SRC_PORT|DYN_DST_ADDR|DYN_DST_PORT}, 13598943Sluigi {"src-addr", DYN_SRC_ADDR}, 13698943Sluigi {"src-port", DYN_SRC_PORT}, 13798943Sluigi {"dst-addr", DYN_DST_ADDR}, 13898943Sluigi {"dst-port", DYN_DST_PORT}, 13998943Sluigi {NULL, 0} 14098943Sluigi}; 14198943Sluigi 14298943Sluigi/* 14398943Sluigi * we use IPPROTO_ETHERTYPE as a fake protocol id to call the print routines 14498943Sluigi * This is only used in this code. 14598943Sluigi */ 14698943Sluigi#define IPPROTO_ETHERTYPE 0x1000 14798943Sluigistatic struct _s_x ether_types[] = { 14898943Sluigi /* 14998943Sluigi * Note, we cannot use "-:&/" in the names because they are field 15098943Sluigi * separators in the type specifications. Also, we use s = NULL as 15198943Sluigi * end-delimiter, because a type of 0 can be legal. 15298943Sluigi */ 15398943Sluigi { "ip", 0x0800 }, 15498943Sluigi { "ipv4", 0x0800 }, 15598943Sluigi { "ipv6", 0x86dd }, 15698943Sluigi { "arp", 0x0806 }, 15798943Sluigi { "rarp", 0x8035 }, 15898943Sluigi { "vlan", 0x8100 }, 15998943Sluigi { "loop", 0x9000 }, 16098943Sluigi { "trail", 0x1000 }, 16198943Sluigi { "at", 0x809b }, 16298943Sluigi { "atalk", 0x809b }, 16398943Sluigi { "aarp", 0x80f3 }, 16498943Sluigi { "pppoe_disc", 0x8863 }, 16598943Sluigi { "pppoe_sess", 0x8864 }, 16698943Sluigi { "ipx_8022", 0x00E0 }, 16798943Sluigi { "ipx_8023", 0x0000 }, 16898943Sluigi { "ipx_ii", 0x8137 }, 16998943Sluigi { "ipx_snap", 0x8137 }, 17098943Sluigi { "ipx", 0x8137 }, 17198943Sluigi { "ns", 0x0600 }, 17298943Sluigi { NULL, 0 } 17398943Sluigi}; 17498943Sluigi 17598943Sluigistatic void show_usage(void); 17698943Sluigi 17798943Sluigienum tokens { 17898943Sluigi TOK_NULL=0, 17998943Sluigi 18098943Sluigi TOK_OR, 18198943Sluigi TOK_NOT, 182101641Sluigi TOK_STARTBRACE, 183101641Sluigi TOK_ENDBRACE, 18498943Sluigi 18598943Sluigi TOK_ACCEPT, 18698943Sluigi TOK_COUNT, 18798943Sluigi TOK_PIPE, 18898943Sluigi TOK_QUEUE, 18998943Sluigi TOK_DIVERT, 19098943Sluigi TOK_TEE, 19198943Sluigi TOK_FORWARD, 19298943Sluigi TOK_SKIPTO, 19398943Sluigi TOK_DENY, 19498943Sluigi TOK_REJECT, 19598943Sluigi TOK_RESET, 19698943Sluigi TOK_UNREACH, 19798943Sluigi TOK_CHECKSTATE, 19898943Sluigi 19998943Sluigi TOK_UID, 20098943Sluigi TOK_GID, 20198943Sluigi TOK_IN, 20298943Sluigi TOK_LIMIT, 20398943Sluigi TOK_KEEPSTATE, 20498943Sluigi TOK_LAYER2, 20598943Sluigi TOK_OUT, 20698943Sluigi TOK_XMIT, 20798943Sluigi TOK_RECV, 20898943Sluigi TOK_VIA, 20998943Sluigi TOK_FRAG, 21098943Sluigi TOK_IPOPTS, 21198943Sluigi TOK_IPLEN, 21298943Sluigi TOK_IPID, 21398943Sluigi TOK_IPPRECEDENCE, 21498943Sluigi TOK_IPTOS, 21598943Sluigi TOK_IPTTL, 21698943Sluigi TOK_IPVER, 21798943Sluigi TOK_ESTAB, 21898943Sluigi TOK_SETUP, 21998943Sluigi TOK_TCPFLAGS, 22098943Sluigi TOK_TCPOPTS, 22198943Sluigi TOK_TCPSEQ, 22298943Sluigi TOK_TCPACK, 22398943Sluigi TOK_TCPWIN, 22498943Sluigi TOK_ICMPTYPES, 225102087Sluigi TOK_MAC, 226102087Sluigi TOK_MACTYPE, 22798943Sluigi 22898943Sluigi TOK_PLR, 229101978Sluigi TOK_NOERROR, 23098943Sluigi TOK_BUCKETS, 23198943Sluigi TOK_DSTIP, 23298943Sluigi TOK_SRCIP, 23398943Sluigi TOK_DSTPORT, 23498943Sluigi TOK_SRCPORT, 23598943Sluigi TOK_ALL, 23698943Sluigi TOK_MASK, 23798943Sluigi TOK_BW, 23898943Sluigi TOK_DELAY, 23998943Sluigi TOK_RED, 24098943Sluigi TOK_GRED, 24198943Sluigi TOK_DROPTAIL, 24298943Sluigi TOK_PROTO, 24398943Sluigi TOK_WEIGHT, 24498943Sluigi}; 24598943Sluigi 24698943Sluigistruct _s_x dummynet_params[] = { 24798943Sluigi { "plr", TOK_PLR }, 248101978Sluigi { "noerror", TOK_NOERROR }, 24998943Sluigi { "buckets", TOK_BUCKETS }, 25098943Sluigi { "dst-ip", TOK_DSTIP }, 25198943Sluigi { "src-ip", TOK_SRCIP }, 25298943Sluigi { "dst-port", TOK_DSTPORT }, 25398943Sluigi { "src-port", TOK_SRCPORT }, 25498943Sluigi { "proto", TOK_PROTO }, 25598943Sluigi { "weight", TOK_WEIGHT }, 25698943Sluigi { "all", TOK_ALL }, 25798943Sluigi { "mask", TOK_MASK }, 25898943Sluigi { "droptail", TOK_DROPTAIL }, 25998943Sluigi { "red", TOK_RED }, 26098943Sluigi { "gred", TOK_GRED }, 26198943Sluigi { "bw", TOK_BW }, 26298943Sluigi { "bandwidth", TOK_BW }, 26398943Sluigi { "delay", TOK_DELAY }, 26499475Sluigi { "pipe", TOK_PIPE }, 26598943Sluigi { "queue", TOK_QUEUE }, 26698943Sluigi { "dummynet-params", TOK_NULL }, 26798943Sluigi { NULL, 0 } 26898943Sluigi}; 26998943Sluigi 27098943Sluigistruct _s_x rule_actions[] = { 27198943Sluigi { "accept", TOK_ACCEPT }, 27298943Sluigi { "pass", TOK_ACCEPT }, 27398943Sluigi { "allow", TOK_ACCEPT }, 27498943Sluigi { "permit", TOK_ACCEPT }, 27598943Sluigi { "count", TOK_COUNT }, 27698943Sluigi { "pipe", TOK_PIPE }, 27798943Sluigi { "queue", TOK_QUEUE }, 27898943Sluigi { "divert", TOK_DIVERT }, 27998943Sluigi { "tee", TOK_TEE }, 28098943Sluigi { "fwd", TOK_FORWARD }, 28198943Sluigi { "forward", TOK_FORWARD }, 28298943Sluigi { "skipto", TOK_SKIPTO }, 28398943Sluigi { "deny", TOK_DENY }, 28498943Sluigi { "drop", TOK_DENY }, 28598943Sluigi { "reject", TOK_REJECT }, 28698943Sluigi { "reset", TOK_RESET }, 28799475Sluigi { "unreach", TOK_UNREACH }, 28898943Sluigi { "check-state", TOK_CHECKSTATE }, 28998943Sluigi { NULL, TOK_NULL }, 29098943Sluigi { NULL, 0 } 29198943Sluigi}; 29298943Sluigi 29398943Sluigistruct _s_x rule_options[] = { 29498943Sluigi { "uid", TOK_UID }, 29598943Sluigi { "gid", TOK_GID }, 29698943Sluigi { "in", TOK_IN }, 29798943Sluigi { "limit", TOK_LIMIT }, 29898943Sluigi { "keep-state", TOK_KEEPSTATE }, 29998943Sluigi { "bridged", TOK_LAYER2 }, 30098943Sluigi { "layer2", TOK_LAYER2 }, 30198943Sluigi { "out", TOK_OUT }, 30298943Sluigi { "xmit", TOK_XMIT }, 30398943Sluigi { "recv", TOK_RECV }, 30498943Sluigi { "via", TOK_VIA }, 30598943Sluigi { "fragment", TOK_FRAG }, 30698943Sluigi { "frag", TOK_FRAG }, 30798943Sluigi { "ipoptions", TOK_IPOPTS }, 30898943Sluigi { "ipopts", TOK_IPOPTS }, 30998943Sluigi { "iplen", TOK_IPLEN }, 31098943Sluigi { "ipid", TOK_IPID }, 31198943Sluigi { "ipprecedence", TOK_IPPRECEDENCE }, 31298943Sluigi { "iptos", TOK_IPTOS }, 31398943Sluigi { "ipttl", TOK_IPTTL }, 31498943Sluigi { "ipversion", TOK_IPVER }, 31598943Sluigi { "ipver", TOK_IPVER }, 31698943Sluigi { "estab", TOK_ESTAB }, 31798943Sluigi { "established", TOK_ESTAB }, 31898943Sluigi { "setup", TOK_SETUP }, 31998943Sluigi { "tcpflags", TOK_TCPFLAGS }, 32098943Sluigi { "tcpflgs", TOK_TCPFLAGS }, 32198943Sluigi { "tcpoptions", TOK_TCPOPTS }, 32298943Sluigi { "tcpopts", TOK_TCPOPTS }, 32398943Sluigi { "tcpseq", TOK_TCPSEQ }, 32498943Sluigi { "tcpack", TOK_TCPACK }, 32598943Sluigi { "tcpwin", TOK_TCPWIN }, 32699909Sluigi { "icmptype", TOK_ICMPTYPES }, 32798943Sluigi { "icmptypes", TOK_ICMPTYPES }, 328102087Sluigi { "dst-ip", TOK_DSTIP }, 329102087Sluigi { "src-ip", TOK_SRCIP }, 330102087Sluigi { "dst-port", TOK_DSTPORT }, 331102087Sluigi { "src-port", TOK_SRCPORT }, 332102087Sluigi { "proto", TOK_PROTO }, 333102087Sluigi { "MAC", TOK_MAC }, 334102087Sluigi { "mac", TOK_MAC }, 335102087Sluigi { "mac-type", TOK_MACTYPE }, 33698943Sluigi 33798943Sluigi { "not", TOK_NOT }, /* pseudo option */ 33898943Sluigi { "!", /* escape ? */ TOK_NOT }, /* pseudo option */ 33998943Sluigi { "or", TOK_OR }, /* pseudo option */ 34098943Sluigi { "|", /* escape */ TOK_OR }, /* pseudo option */ 341101641Sluigi { "{", TOK_STARTBRACE }, /* pseudo option */ 342101641Sluigi { "(", TOK_STARTBRACE }, /* pseudo option */ 343101641Sluigi { "}", TOK_ENDBRACE }, /* pseudo option */ 344101641Sluigi { ")", TOK_ENDBRACE }, /* pseudo option */ 34598943Sluigi { NULL, TOK_NULL }, 34698943Sluigi { NULL, 0 } 34798943Sluigi}; 34898943Sluigi 34998943Sluigi/** 35098943Sluigi * match_token takes a table and a string, returns the value associated 35198943Sluigi * with the string (0 meaning an error in most cases) 35298943Sluigi */ 35398943Sluigistatic int 35498943Sluigimatch_token(struct _s_x *table, char *string) 35598943Sluigi{ 35698943Sluigi struct _s_x *pt; 35798943Sluigi int i = strlen(string); 35898943Sluigi 35998943Sluigi for (pt = table ; i && pt->s != NULL ; pt++) 36098943Sluigi if (strlen(pt->s) == i && !bcmp(string, pt->s, i)) 36198943Sluigi return pt->x; 36298943Sluigi return -1; 36398943Sluigi}; 36498943Sluigi 36598943Sluigistatic char * 36698943Sluigimatch_value(struct _s_x *p, u_int32_t value) 36798943Sluigi{ 36898943Sluigi for (; p->s != NULL; p++) 36998943Sluigi if (p->x == value) 37098943Sluigi return p->s; 37198943Sluigi return NULL; 37298943Sluigi} 37398943Sluigi 37498943Sluigi/* 37598943Sluigi * prints one port, symbolic or numeric 37698943Sluigi */ 37798943Sluigistatic void 37898943Sluigiprint_port(int proto, u_int16_t port) 37998943Sluigi{ 38098943Sluigi 38198943Sluigi if (proto == IPPROTO_ETHERTYPE) { 38298943Sluigi char *s; 38398943Sluigi 38498943Sluigi if (do_resolv && (s = match_value(ether_types, port)) ) 38598943Sluigi printf("%s", s); 38698943Sluigi else 38798943Sluigi printf("0x%04x", port); 38898943Sluigi } else { 38998943Sluigi struct servent *se = NULL; 39098943Sluigi if (do_resolv) { 39198943Sluigi struct protoent *pe = getprotobynumber(proto); 39298943Sluigi 39398943Sluigi se = getservbyport(htons(port), pe ? pe->p_name : NULL); 39498943Sluigi } 39598943Sluigi if (se) 39698943Sluigi printf("%s", se->s_name); 39798943Sluigi else 39898943Sluigi printf("%d", port); 39998943Sluigi } 40098943Sluigi} 40198943Sluigi 40298943Sluigi/* 40398943Sluigi * print the values in a list of ports 40498943Sluigi * XXX todo: add support for mask. 40598943Sluigi */ 40698943Sluigistatic void 407102087Sluigiprint_newports(ipfw_insn_u16 *cmd, int proto, int opcode) 40898943Sluigi{ 40998943Sluigi u_int16_t *p = cmd->ports; 41098943Sluigi int i; 41198943Sluigi char *sep= " "; 41298943Sluigi 41398943Sluigi if (cmd->o.len & F_NOT) 41498943Sluigi printf(" not"); 415102087Sluigi if (opcode != 0) 416102087Sluigi printf ("%s", opcode == O_MAC_TYPE ? " mac-type" : 417102087Sluigi (opcode == O_IP_DSTPORT ? " dst-port" : " src-port")); 41898943Sluigi for (i = F_LEN((ipfw_insn *)cmd) - 1; i > 0; i--, p += 2) { 41998943Sluigi printf(sep); 42098943Sluigi print_port(proto, p[0]); 42198943Sluigi if (p[0] != p[1]) { 42298943Sluigi printf("-"); 42398943Sluigi print_port(proto, p[1]); 42498943Sluigi } 42598943Sluigi sep = ","; 42698943Sluigi } 42798943Sluigi} 42898943Sluigi 42998943Sluigi/* 43098943Sluigi * Like strtol, but also translates service names into port numbers 43198943Sluigi * for some protocols. 43298943Sluigi * In particular: 43398943Sluigi * proto == -1 disables the protocol check; 43498943Sluigi * proto == IPPROTO_ETHERTYPE looks up an internal table 43598943Sluigi * proto == <some value in /etc/protocols> matches the values there. 436101628Sluigi * Returns *end == s in case the parameter is not found. 43798943Sluigi */ 43898943Sluigistatic int 43998943Sluigistrtoport(char *s, char **end, int base, int proto) 44098943Sluigi{ 441101628Sluigi char *p, *buf; 442101628Sluigi char *s1; 44398943Sluigi int i; 44498943Sluigi 445101628Sluigi *end = s; /* default - not found */ 44698943Sluigi if ( *s == '\0') 447101628Sluigi return 0; /* not found */ 448101628Sluigi 44998943Sluigi if (isdigit(*s)) 45098943Sluigi return strtol(s, end, base); 45198943Sluigi 45298943Sluigi /* 453101628Sluigi * find separator. '\\' escapes the next char. 45498943Sluigi */ 455101628Sluigi for (s1 = s; *s1 && (isalnum(*s1) || *s1 == '\\') ; s1++) 456101628Sluigi if (*s1 == '\\' && s1[1] != '\0') 457101628Sluigi s1++; 45898943Sluigi 459101628Sluigi buf = malloc(s1 - s + 1); 460101628Sluigi if (buf == NULL) 461101628Sluigi return 0; 462101628Sluigi 463101628Sluigi /* 464101628Sluigi * copy into a buffer skipping backslashes 465101628Sluigi */ 466101628Sluigi for (p = s, i = 0; p != s1 ; p++) 467101628Sluigi if ( *p != '\\') 468101628Sluigi buf[i++] = *p; 469101628Sluigi buf[i++] = '\0'; 470101628Sluigi 47198943Sluigi if (proto == IPPROTO_ETHERTYPE) { 472101628Sluigi i = match_token(ether_types, buf); 473101628Sluigi free(buf); 474101628Sluigi if (i != -1) { /* found */ 47598943Sluigi *end = s1; 47698943Sluigi return i; 47798943Sluigi } 47898943Sluigi } else { 47998943Sluigi struct protoent *pe = NULL; 48098943Sluigi struct servent *se; 48198943Sluigi 48298943Sluigi if (proto != 0) 48398943Sluigi pe = getprotobynumber(proto); 48498943Sluigi setservent(1); 485101628Sluigi se = getservbyname(buf, pe ? pe->p_name : NULL); 486101628Sluigi free(buf); 48798943Sluigi if (se != NULL) { 48898943Sluigi *end = s1; 48998943Sluigi return ntohs(se->s_port); 49098943Sluigi } 49198943Sluigi } 492101628Sluigi return 0; /* not found */ 49398943Sluigi} 49498943Sluigi 49598943Sluigi/* 49698943Sluigi * fill the body of the command with the list of port ranges. 49798943Sluigi * At the moment it only understands numeric ranges. 49898943Sluigi */ 49998943Sluigistatic int 50098943Sluigifill_newports(ipfw_insn_u16 *cmd, char *av, int proto) 50198943Sluigi{ 50298943Sluigi u_int16_t *p = cmd->ports; 50398943Sluigi int i = 0; 504102087Sluigi char *s = av; 50598943Sluigi 506102087Sluigi while (*s) { 50798943Sluigi u_int16_t a, b; 50898943Sluigi 50998943Sluigi a = strtoport(av, &s, 0, proto); 51098943Sluigi if (s == av) /* no parameter */ 51198943Sluigi break; 51298943Sluigi if (*s == '-') { /* a range */ 51398943Sluigi av = s+1; 51498943Sluigi b = strtoport(av, &s, 0, proto); 51598943Sluigi if (s == av) /* no parameter */ 51698943Sluigi break; 51798943Sluigi p[0] = a; 51898943Sluigi p[1] = b; 51998943Sluigi } else if (*s == ',' || *s == '\0' ) { 52098943Sluigi p[0] = p[1] = a; 521101978Sluigi } else { /* invalid separator */ 522101978Sluigi errx(EX_DATAERR, "invalid separator <%c> in <%s>\n", 523101978Sluigi *s, av); 524101978Sluigi } 525102087Sluigi i++; 526102087Sluigi p += 2; 52798943Sluigi av = s+1; 52898943Sluigi } 52998943Sluigi if (i > 0) { 53098943Sluigi if (i+1 > F_LEN_MASK) 531102087Sluigi errx(EX_DATAERR, "too many ports/ranges\n"); 53298943Sluigi cmd->o.len |= i+1; /* leave F_NOT and F_OR untouched */ 53398943Sluigi } 53498943Sluigi return i; 53598943Sluigi} 53698943Sluigi 53798943Sluigistatic struct _s_x icmpcodes[] = { 53898943Sluigi { "net", ICMP_UNREACH_NET }, 53998943Sluigi { "host", ICMP_UNREACH_HOST }, 54098943Sluigi { "protocol", ICMP_UNREACH_PROTOCOL }, 54198943Sluigi { "port", ICMP_UNREACH_PORT }, 54298943Sluigi { "needfrag", ICMP_UNREACH_NEEDFRAG }, 54398943Sluigi { "srcfail", ICMP_UNREACH_SRCFAIL }, 54498943Sluigi { "net-unknown", ICMP_UNREACH_NET_UNKNOWN }, 54598943Sluigi { "host-unknown", ICMP_UNREACH_HOST_UNKNOWN }, 54698943Sluigi { "isolated", ICMP_UNREACH_ISOLATED }, 54798943Sluigi { "net-prohib", ICMP_UNREACH_NET_PROHIB }, 54898943Sluigi { "host-prohib", ICMP_UNREACH_HOST_PROHIB }, 54998943Sluigi { "tosnet", ICMP_UNREACH_TOSNET }, 55098943Sluigi { "toshost", ICMP_UNREACH_TOSHOST }, 55198943Sluigi { "filter-prohib", ICMP_UNREACH_FILTER_PROHIB }, 55298943Sluigi { "host-precedence", ICMP_UNREACH_HOST_PRECEDENCE }, 55398943Sluigi { "precedence-cutoff", ICMP_UNREACH_PRECEDENCE_CUTOFF }, 55498943Sluigi { NULL, 0 } 55598943Sluigi}; 55698943Sluigi 55798943Sluigistatic void 55898943Sluigifill_reject_code(u_short *codep, char *str) 55998943Sluigi{ 56098943Sluigi int val; 56198943Sluigi char *s; 56298943Sluigi 56398943Sluigi val = strtoul(str, &s, 0); 56498943Sluigi if (s == str || *s != '\0' || val >= 0x100) 56598943Sluigi val = match_token(icmpcodes, str); 566102087Sluigi if (val < 0) 56798943Sluigi errx(EX_DATAERR, "unknown ICMP unreachable code ``%s''", str); 56898943Sluigi *codep = val; 56998943Sluigi return; 57098943Sluigi} 57198943Sluigi 57298943Sluigistatic void 57399475Sluigiprint_reject_code(u_int16_t code) 57498943Sluigi{ 57598943Sluigi char *s = match_value(icmpcodes, code); 57698943Sluigi 57798943Sluigi if (s != NULL) 57899475Sluigi printf("unreach %s", s); 57998943Sluigi else 58099475Sluigi printf("unreach %u", code); 58198943Sluigi} 58298943Sluigi 58398943Sluigi/* 58498943Sluigi * Returns the number of bits set (from left) in a contiguous bitmask, 58598943Sluigi * or -1 if the mask is not contiguous. 58698943Sluigi * XXX this needs a proper fix. 58798943Sluigi * This effectively works on masks in big-endian (network) format. 58898943Sluigi * when compiled on little endian architectures. 58998943Sluigi * 59098943Sluigi * First bit is bit 7 of the first byte -- note, for MAC addresses, 59198943Sluigi * the first bit on the wire is bit 0 of the first byte. 59298943Sluigi * len is the max length in bits. 59398943Sluigi */ 59498943Sluigistatic int 59598943Sluigicontigmask(u_char *p, int len) 59698943Sluigi{ 59798943Sluigi int i, n; 59898943Sluigi for (i=0; i<len ; i++) 59998943Sluigi if ( (p[i/8] & (1 << (7 - (i%8)))) == 0) /* first bit unset */ 60098943Sluigi break; 60198943Sluigi for (n=i+1; n < len; n++) 60298943Sluigi if ( (p[n/8] & (1 << (7 - (n%8)))) != 0) 60398943Sluigi return -1; /* mask not contiguous */ 60498943Sluigi return i; 60598943Sluigi} 60698943Sluigi 60798943Sluigi/* 60898943Sluigi * print flags set/clear in the two bitmasks passed as parameters. 60998943Sluigi * There is a specialized check for f_tcpflags. 61098943Sluigi */ 61198943Sluigistatic void 61298943Sluigiprint_flags(char *name, ipfw_insn *cmd, struct _s_x *list) 61398943Sluigi{ 61498943Sluigi char *comma=""; 61598943Sluigi int i; 61698943Sluigi u_char set = cmd->arg1 & 0xff; 61798943Sluigi u_char clear = (cmd->arg1 >> 8) & 0xff; 61898943Sluigi 61998943Sluigi if (list == f_tcpflags && set == TH_SYN && clear == TH_ACK) { 62098943Sluigi printf(" setup"); 62198943Sluigi return; 62298943Sluigi } 62398943Sluigi 62498943Sluigi printf(" %s ", name); 62598943Sluigi for (i=0; list[i].x != 0; i++) { 62698943Sluigi if (set & list[i].x) { 62798943Sluigi set &= ~list[i].x; 62898943Sluigi printf("%s%s", comma, list[i].s); 62998943Sluigi comma = ","; 63098943Sluigi } 63198943Sluigi if (clear & list[i].x) { 63298943Sluigi clear &= ~list[i].x; 63398943Sluigi printf("%s!%s", comma, list[i].s); 63498943Sluigi comma = ","; 63598943Sluigi } 63698943Sluigi } 63798943Sluigi} 63898943Sluigi 63998943Sluigi/* 64098943Sluigi * Print the ip address contained in a command. 64198943Sluigi */ 64298943Sluigistatic void 643102087Sluigiprint_ip(ipfw_insn_ip *cmd, char *s) 64498943Sluigi{ 64598943Sluigi struct hostent *he = NULL; 64698943Sluigi int mb; 64798943Sluigi 648102087Sluigi printf("%s%s ", cmd->o.len & F_NOT ? " not": "", s); 64998943Sluigi 65098943Sluigi if (cmd->o.opcode == O_IP_SRC_ME || cmd->o.opcode == O_IP_DST_ME) { 65198943Sluigi printf("me"); 65298943Sluigi return; 65398943Sluigi } 65498943Sluigi if (cmd->o.opcode == O_IP_SRC_SET || cmd->o.opcode == O_IP_DST_SET) { 65598943Sluigi u_int32_t x, *d; 65698943Sluigi int i; 65798943Sluigi char comma = '{'; 65898943Sluigi 65998943Sluigi x = cmd->o.arg1 - 1; 66098943Sluigi x = htonl( ~x ); 66198943Sluigi cmd->addr.s_addr = htonl(cmd->addr.s_addr); 66298943Sluigi printf("%s/%d", inet_ntoa(cmd->addr), 66398943Sluigi contigmask((u_char *)&x, 32)); 66498943Sluigi x = cmd->addr.s_addr = htonl(cmd->addr.s_addr); 66598943Sluigi x &= 0xff; /* base */ 66698943Sluigi d = (u_int32_t *)&(cmd->mask); 66798943Sluigi for (i=0; i < cmd->o.arg1; i++) 66898943Sluigi if (d[ i/32] & (1<<(i & 31))) { 66998943Sluigi printf("%c%d", comma, i+x); 67098943Sluigi comma = ','; 67198943Sluigi } 67298943Sluigi printf("}"); 67398943Sluigi return; 67498943Sluigi } 67598943Sluigi if (cmd->o.opcode == O_IP_SRC || cmd->o.opcode == O_IP_DST) 67698943Sluigi mb = 32; 67798943Sluigi else 67898943Sluigi mb = contigmask((u_char *)&(cmd->mask.s_addr), 32); 67998943Sluigi if (mb == 32 && do_resolv) 68098943Sluigi he = gethostbyaddr((char *)&(cmd->addr.s_addr), 68198943Sluigi sizeof(u_long), AF_INET); 68298943Sluigi if (he != NULL) /* resolved to name */ 68398943Sluigi printf("%s", he->h_name); 68498943Sluigi else if (mb == 0) /* any */ 68598943Sluigi printf("any"); 68698943Sluigi else { /* numeric IP followed by some kind of mask */ 68798943Sluigi printf("%s", inet_ntoa(cmd->addr)); 68898943Sluigi if (mb < 0) 68998943Sluigi printf(":%s", inet_ntoa(cmd->mask)); 69098943Sluigi else if (mb < 32) 69198943Sluigi printf("/%d", mb); 69298943Sluigi } 69398943Sluigi} 69498943Sluigi 69598943Sluigi/* 69698943Sluigi * prints a MAC address/mask pair 69798943Sluigi */ 69898943Sluigistatic void 69998943Sluigiprint_mac(u_char *addr, u_char *mask) 70098943Sluigi{ 70198943Sluigi int l = contigmask(mask, 48); 70298943Sluigi 70398943Sluigi if (l == 0) 70498943Sluigi printf(" any"); 70598943Sluigi else { 70698943Sluigi printf(" %02x:%02x:%02x:%02x:%02x:%02x", 70798943Sluigi addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 70898943Sluigi if (l == -1) 70998943Sluigi printf("&%02x:%02x:%02x:%02x:%02x:%02x", 71098943Sluigi mask[0], mask[1], mask[2], 71198943Sluigi mask[3], mask[4], mask[5]); 71298943Sluigi else if (l < 48) 71398943Sluigi printf("/%d", l); 71498943Sluigi } 71598943Sluigi} 71698943Sluigi 71799475Sluigistatic void 71899475Sluigifill_icmptypes(ipfw_insn_u32 *cmd, char *av) 71999475Sluigi{ 72099475Sluigi u_int8_t type; 72198943Sluigi 72299475Sluigi cmd->d[0] = 0; 72399475Sluigi while (*av) { 72499475Sluigi if (*av == ',') 72599475Sluigi av++; 72699475Sluigi 72799475Sluigi type = strtoul(av, &av, 0); 72899475Sluigi 72999475Sluigi if (*av != ',' && *av != '\0') 73099475Sluigi errx(EX_DATAERR, "invalid ICMP type"); 73199475Sluigi 73299475Sluigi if (type > 31) 73399475Sluigi errx(EX_DATAERR, "ICMP type out of range"); 73499475Sluigi 73599475Sluigi cmd->d[0] |= 1 << type; 73699475Sluigi } 73799475Sluigi cmd->o.opcode = O_ICMPTYPE; 73899475Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 73999475Sluigi} 74099475Sluigi 74199475Sluigistatic void 74299475Sluigiprint_icmptypes(ipfw_insn_u32 *cmd) 74399475Sluigi{ 74499475Sluigi int i; 74599475Sluigi char sep= ' '; 74699475Sluigi 74799475Sluigi printf(" icmptypes"); 74899475Sluigi for (i = 0; i < 32; i++) { 74999475Sluigi if ( (cmd->d[0] & (1 << (i))) == 0) 75099475Sluigi continue; 75199475Sluigi printf("%c%d", sep, i); 75299475Sluigi sep = ','; 75399475Sluigi } 75499475Sluigi} 75599475Sluigi 75698943Sluigi/* 75798943Sluigi * show_ipfw() prints the body of an ipfw rule. 75898943Sluigi * Because the standard rule has at least proto src_ip dst_ip, we use 75998943Sluigi * a helper function to produce these entries if not provided explicitly. 760102087Sluigi * The first argument is the list of fields we have, the second is 761102087Sluigi * the list of fields we want to be printed. 762101978Sluigi * 763102087Sluigi * Special cases if we have provided a MAC header: 764102087Sluigi * + if the rule does not contain IP addresses/ports, do not print them; 765102087Sluigi * + if the rule does not contain an IP proto, print "all" instead of "ip"; 766102087Sluigi * 767102087Sluigi * Once we have 'have_options', IP header fields are printed as options. 76898943Sluigi */ 769101978Sluigi#define HAVE_PROTO 0x0001 770101978Sluigi#define HAVE_SRCIP 0x0002 771101978Sluigi#define HAVE_DSTIP 0x0004 772101978Sluigi#define HAVE_MAC 0x0008 773101978Sluigi#define HAVE_MACTYPE 0x0010 774102087Sluigi#define HAVE_OPTIONS 0x8000 77598943Sluigi 776101978Sluigi#define HAVE_IP (HAVE_PROTO | HAVE_SRCIP | HAVE_DSTIP) 77798943Sluigistatic void 778102087Sluigishow_prerequisites(int *flags, int want, int cmd) 77998943Sluigi{ 780102087Sluigi if ( (*flags & HAVE_IP) == HAVE_IP) 781102087Sluigi *flags |= HAVE_OPTIONS; 782102087Sluigi 783102087Sluigi if ( (*flags & (HAVE_MAC|HAVE_MACTYPE|HAVE_OPTIONS)) == HAVE_MAC && 784102087Sluigi cmd != O_MAC_TYPE) { 785102087Sluigi /* 786102087Sluigi * mac-type was optimized out by the compiler, 787102087Sluigi * restore it 788102087Sluigi */ 789102087Sluigi printf(" any"); 790102087Sluigi *flags |= HAVE_MACTYPE | HAVE_OPTIONS; 791102087Sluigi return; 792101978Sluigi } 793102087Sluigi if ( !(*flags & HAVE_OPTIONS)) { 794102087Sluigi if ( !(*flags & HAVE_PROTO) && (want & HAVE_PROTO)) 795102087Sluigi printf(" ip"); 796102087Sluigi if ( !(*flags & HAVE_SRCIP) && (want & HAVE_SRCIP)) 797102087Sluigi printf(" from any"); 798102087Sluigi if ( !(*flags & HAVE_DSTIP) && (want & HAVE_DSTIP)) 799102087Sluigi printf(" to any"); 800102087Sluigi } 80198943Sluigi *flags |= want; 80298943Sluigi} 80398943Sluigi 80498943Sluigistatic void 80598943Sluigishow_ipfw(struct ip_fw *rule) 80698943Sluigi{ 80798943Sluigi int l; 80898943Sluigi ipfw_insn *cmd; 80998943Sluigi int proto = 0; /* default */ 81098943Sluigi int flags = 0; /* prerequisites */ 81198943Sluigi ipfw_insn_log *logptr = NULL; /* set if we find an O_LOG */ 81298943Sluigi int or_block = 0; /* we are in an or block */ 81398943Sluigi 814105887Smux u_int32_t set_disable = rule->set_disable; 815101628Sluigi 816101628Sluigi if (set_disable & (1 << rule->set)) { /* disabled */ 817101628Sluigi if (!show_sets) 818101628Sluigi return; 819101628Sluigi else 820101628Sluigi printf("# DISABLED "); 821101628Sluigi } 82298943Sluigi printf("%05u ", rule->rulenum); 82398943Sluigi 82498943Sluigi if (do_acct) 82598943Sluigi printf("%10qu %10qu ", rule->pcnt, rule->bcnt); 82698943Sluigi 82798943Sluigi if (do_time) { 82898943Sluigi if (rule->timestamp) { 82998943Sluigi char timestr[30]; 83098943Sluigi time_t t = _long_to_time(rule->timestamp); 83198943Sluigi 83298943Sluigi strcpy(timestr, ctime(&t)); 83398943Sluigi *strchr(timestr, '\n') = '\0'; 83498943Sluigi printf("%s ", timestr); 83598943Sluigi } else { 83698943Sluigi printf(" "); 83798943Sluigi } 83898943Sluigi } 83998943Sluigi 840101628Sluigi if (show_sets) 841101628Sluigi printf("set %d ", rule->set); 842101628Sluigi 84398943Sluigi /* 84498943Sluigi * first print actions 84598943Sluigi */ 84698943Sluigi for (l = rule->cmd_len - rule->act_ofs, cmd = ACTION_PTR(rule); 84798943Sluigi l > 0 ; l -= F_LEN(cmd), cmd += F_LEN(cmd)) { 84898943Sluigi switch(cmd->opcode) { 84998943Sluigi case O_CHECK_STATE: 85098943Sluigi printf("check-state"); 851102087Sluigi flags = HAVE_IP; /* avoid printing anything else */ 85298943Sluigi break; 85398943Sluigi 85498943Sluigi case O_PROB: 85598943Sluigi { 85698943Sluigi ipfw_insn_u32 *p = (ipfw_insn_u32 *)cmd; 85798943Sluigi double d = 1.0 * p->d[0]; 85898943Sluigi 85998943Sluigi d = 1 - (d / 0x7fffffff); 86098943Sluigi printf("prob %f ", d); 86198943Sluigi } 86298943Sluigi break; 86398943Sluigi 86498943Sluigi case O_ACCEPT: 86598943Sluigi printf("allow"); 86698943Sluigi break; 86798943Sluigi 86898943Sluigi case O_COUNT: 86998943Sluigi printf("count"); 87098943Sluigi break; 87198943Sluigi 87298943Sluigi case O_DENY: 87398943Sluigi printf("deny"); 87498943Sluigi break; 87598943Sluigi 87699475Sluigi case O_REJECT: 87799475Sluigi if (cmd->arg1 == ICMP_REJECT_RST) 87899475Sluigi printf("reset"); 87999475Sluigi else if (cmd->arg1 == ICMP_UNREACH_HOST) 88099475Sluigi printf("reject"); 88199475Sluigi else 88299475Sluigi print_reject_code(cmd->arg1); 88399475Sluigi break; 88499475Sluigi 88598943Sluigi case O_SKIPTO: 88698943Sluigi printf("skipto %u", cmd->arg1); 88798943Sluigi break; 88898943Sluigi 88998943Sluigi case O_PIPE: 89098943Sluigi printf("pipe %u", cmd->arg1); 89198943Sluigi break; 89298943Sluigi 89398943Sluigi case O_QUEUE: 89498943Sluigi printf("queue %u", cmd->arg1); 89598943Sluigi break; 89698943Sluigi 89798943Sluigi case O_DIVERT: 89898943Sluigi printf("divert %u", cmd->arg1); 89998943Sluigi break; 90098943Sluigi 90198943Sluigi case O_TEE: 90298943Sluigi printf("tee %u", cmd->arg1); 90398943Sluigi break; 90498943Sluigi 90598943Sluigi case O_FORWARD_IP: 90698943Sluigi { 90798943Sluigi ipfw_insn_sa *s = (ipfw_insn_sa *)cmd; 90898943Sluigi 90998943Sluigi printf("fwd %s", inet_ntoa(s->sa.sin_addr)); 91098943Sluigi if (s->sa.sin_port) 911103241Sluigi printf(",%d", s->sa.sin_port); 91298943Sluigi } 91398943Sluigi break; 91498943Sluigi 91598943Sluigi case O_LOG: /* O_LOG is printed last */ 91698943Sluigi logptr = (ipfw_insn_log *)cmd; 91798943Sluigi break; 91898943Sluigi 91998943Sluigi default: 92098943Sluigi printf("** unrecognized action %d len %d", 92198943Sluigi cmd->opcode, cmd->len); 92298943Sluigi } 92398943Sluigi } 92498943Sluigi if (logptr) { 92598943Sluigi if (logptr->max_log > 0) 92699909Sluigi printf(" log logamount %d", logptr->max_log); 92798943Sluigi else 92899909Sluigi printf(" log"); 92998943Sluigi } 930102087Sluigi 93198943Sluigi /* 932102087Sluigi * then print the body. 93398943Sluigi */ 934102087Sluigi if (rule->_pad & 1) { /* empty rules before options */ 935102098Sluigi if (!do_compact) 936102098Sluigi printf(" ip from any to any"); 937102087Sluigi flags |= HAVE_IP | HAVE_OPTIONS; 938102087Sluigi } 939102087Sluigi 94098943Sluigi for (l = rule->act_ofs, cmd = rule->cmd ; 94198943Sluigi l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 94299475Sluigi /* useful alias */ 94399475Sluigi ipfw_insn_u32 *cmd32 = (ipfw_insn_u32 *)cmd; 94498943Sluigi 945102087Sluigi show_prerequisites(&flags, 0, cmd->opcode); 946102087Sluigi 94798943Sluigi switch(cmd->opcode) { 94898943Sluigi case O_PROBE_STATE: 94998943Sluigi break; /* no need to print anything here */ 95098943Sluigi 95198943Sluigi case O_MACADDR2: { 95298943Sluigi ipfw_insn_mac *m = (ipfw_insn_mac *)cmd; 953102087Sluigi 954102087Sluigi if ((cmd->len & F_OR) && !or_block) 955102087Sluigi printf(" {"); 95698943Sluigi if (cmd->len & F_NOT) 95798943Sluigi printf(" not"); 958102087Sluigi printf(" MAC"); 959102087Sluigi flags |= HAVE_MAC; 96098943Sluigi print_mac( m->addr, m->mask); 96198943Sluigi print_mac( m->addr + 6, m->mask + 6); 96298943Sluigi } 96398943Sluigi break; 96498943Sluigi 96598943Sluigi case O_MAC_TYPE: 966102087Sluigi if ((cmd->len & F_OR) && !or_block) 967102087Sluigi printf(" {"); 968102087Sluigi print_newports((ipfw_insn_u16 *)cmd, IPPROTO_ETHERTYPE, 969102087Sluigi (flags & HAVE_OPTIONS) ? cmd->opcode : 0); 970102087Sluigi flags |= HAVE_MAC | HAVE_MACTYPE | HAVE_OPTIONS; 97198943Sluigi break; 97298943Sluigi 97398943Sluigi case O_IP_SRC: 97498943Sluigi case O_IP_SRC_MASK: 97598943Sluigi case O_IP_SRC_ME: 97698943Sluigi case O_IP_SRC_SET: 977102087Sluigi show_prerequisites(&flags, HAVE_PROTO, 0); 97898943Sluigi if (!(flags & HAVE_SRCIP)) 97998943Sluigi printf(" from"); 98098943Sluigi if ((cmd->len & F_OR) && !or_block) 98198943Sluigi printf(" {"); 982102087Sluigi print_ip((ipfw_insn_ip *)cmd, 983102087Sluigi (flags & HAVE_OPTIONS) ? " src-ip" : ""); 98498943Sluigi flags |= HAVE_SRCIP; 98598943Sluigi break; 98698943Sluigi 98798943Sluigi case O_IP_DST: 98898943Sluigi case O_IP_DST_MASK: 98998943Sluigi case O_IP_DST_ME: 99098943Sluigi case O_IP_DST_SET: 991102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 99298943Sluigi if (!(flags & HAVE_DSTIP)) 99398943Sluigi printf(" to"); 99498943Sluigi if ((cmd->len & F_OR) && !or_block) 99598943Sluigi printf(" {"); 996102087Sluigi print_ip((ipfw_insn_ip *)cmd, 997102087Sluigi (flags & HAVE_OPTIONS) ? " dst-ip" : ""); 99898943Sluigi flags |= HAVE_DSTIP; 99998943Sluigi break; 100098943Sluigi 100198943Sluigi case O_IP_DSTPORT: 1002102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 100398943Sluigi case O_IP_SRCPORT: 1004102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 1005101641Sluigi if ((cmd->len & F_OR) && !or_block) 1006101641Sluigi printf(" {"); 1007102087Sluigi print_newports((ipfw_insn_u16 *)cmd, proto, 1008102087Sluigi (flags & HAVE_OPTIONS) ? cmd->opcode : 0); 100998943Sluigi break; 101098943Sluigi 101198943Sluigi case O_PROTO: { 101298943Sluigi struct protoent *pe; 101398943Sluigi 101498943Sluigi if ((cmd->len & F_OR) && !or_block) 101598943Sluigi printf(" {"); 101698943Sluigi if (cmd->len & F_NOT) 101798943Sluigi printf(" not"); 101898943Sluigi proto = cmd->arg1; 101998943Sluigi pe = getprotobynumber(cmd->arg1); 1020102087Sluigi if (flags & HAVE_OPTIONS) 1021102087Sluigi printf(" proto"); 102298943Sluigi if (pe) 102398943Sluigi printf(" %s", pe->p_name); 102498943Sluigi else 102598943Sluigi printf(" %u", cmd->arg1); 102698943Sluigi } 102798943Sluigi flags |= HAVE_PROTO; 102898943Sluigi break; 102998943Sluigi 103098943Sluigi default: /*options ... */ 1031102087Sluigi show_prerequisites(&flags, HAVE_IP | HAVE_OPTIONS, 0); 103298943Sluigi if ((cmd->len & F_OR) && !or_block) 103398943Sluigi printf(" {"); 103498943Sluigi if (cmd->len & F_NOT && cmd->opcode != O_IN) 103598943Sluigi printf(" not"); 103698943Sluigi switch(cmd->opcode) { 103798943Sluigi case O_FRAG: 103898943Sluigi printf(" frag"); 103998943Sluigi break; 104098943Sluigi 104198943Sluigi case O_IN: 104298943Sluigi printf(cmd->len & F_NOT ? " out" : " in"); 104398943Sluigi break; 104498943Sluigi 104598943Sluigi case O_LAYER2: 104698943Sluigi printf(" layer2"); 104798943Sluigi break; 104898943Sluigi case O_XMIT: 104998943Sluigi case O_RECV: 105098943Sluigi case O_VIA: { 105198943Sluigi char *s; 105298943Sluigi ipfw_insn_if *cmdif = (ipfw_insn_if *)cmd; 105398943Sluigi 105498943Sluigi if (cmd->opcode == O_XMIT) 105598943Sluigi s = "xmit"; 105698943Sluigi else if (cmd->opcode == O_RECV) 105798943Sluigi s = "recv"; 105898943Sluigi else if (cmd->opcode == O_VIA) 105998943Sluigi s = "via"; 106098943Sluigi if (cmdif->name[0] == '\0') 106199475Sluigi printf(" %s %s", s, 106299475Sluigi inet_ntoa(cmdif->p.ip)); 106398943Sluigi else if (cmdif->p.unit == -1) 106498943Sluigi printf(" %s %s*", s, cmdif->name); 106598943Sluigi else 106699475Sluigi printf(" %s %s%d", s, cmdif->name, 106799475Sluigi cmdif->p.unit); 106898943Sluigi } 106998943Sluigi break; 107098943Sluigi 107198943Sluigi case O_IPID: 107298943Sluigi printf(" ipid %u", cmd->arg1 ); 107398943Sluigi break; 107498943Sluigi 107598943Sluigi case O_IPTTL: 107698943Sluigi printf(" ipttl %u", cmd->arg1 ); 107798943Sluigi break; 107898943Sluigi 107998943Sluigi case O_IPVER: 108098943Sluigi printf(" ipver %u", cmd->arg1 ); 108198943Sluigi break; 108298943Sluigi 108399475Sluigi case O_IPPRECEDENCE: 108499475Sluigi printf(" ipprecedence %u", (cmd->arg1) >> 5 ); 108599475Sluigi break; 108699475Sluigi 108798943Sluigi case O_IPLEN: 108898943Sluigi printf(" iplen %u", cmd->arg1 ); 108998943Sluigi break; 109098943Sluigi 1091101116Sluigi case O_IPOPT: 109298943Sluigi print_flags("ipoptions", cmd, f_ipopts); 109398943Sluigi break; 109498943Sluigi 109599475Sluigi case O_IPTOS: 109699475Sluigi print_flags("iptos", cmd, f_iptos); 109799475Sluigi break; 109899475Sluigi 109999475Sluigi case O_ICMPTYPE: 110099475Sluigi print_icmptypes((ipfw_insn_u32 *)cmd); 110199475Sluigi break; 110299475Sluigi 110398943Sluigi case O_ESTAB: 110498943Sluigi printf(" established"); 110598943Sluigi break; 110698943Sluigi 110798943Sluigi case O_TCPFLAGS: 110898943Sluigi print_flags("tcpflags", cmd, f_tcpflags); 110998943Sluigi break; 111098943Sluigi 111198943Sluigi case O_TCPOPTS: 111298943Sluigi print_flags("tcpoptions", cmd, f_tcpopts); 111398943Sluigi break; 111498943Sluigi 111598943Sluigi case O_TCPWIN: 111698943Sluigi printf(" tcpwin %d", ntohs(cmd->arg1)); 111798943Sluigi break; 111898943Sluigi 111998943Sluigi case O_TCPACK: 112098943Sluigi printf(" tcpack %d", ntohl(cmd32->d[0])); 112198943Sluigi break; 112298943Sluigi 112398943Sluigi case O_TCPSEQ: 112498943Sluigi printf(" tcpseq %d", ntohl(cmd32->d[0])); 112598943Sluigi break; 112698943Sluigi 112798943Sluigi case O_UID: 112898943Sluigi { 112998943Sluigi struct passwd *pwd = getpwuid(cmd32->d[0]); 113098943Sluigi 113198943Sluigi if (pwd) 113298943Sluigi printf(" uid %s", pwd->pw_name); 113398943Sluigi else 113498943Sluigi printf(" uid %u", cmd32->d[0]); 113598943Sluigi } 113698943Sluigi break; 113798943Sluigi 113898943Sluigi case O_GID: 113998943Sluigi { 114098943Sluigi struct group *grp = getgrgid(cmd32->d[0]); 114198943Sluigi 114298943Sluigi if (grp) 114398943Sluigi printf(" gid %s", grp->gr_name); 114498943Sluigi else 114598943Sluigi printf(" gid %u", cmd32->d[0]); 114698943Sluigi } 114798943Sluigi break; 114898943Sluigi 114998943Sluigi case O_KEEP_STATE: 115098943Sluigi printf(" keep-state"); 115198943Sluigi break; 115298943Sluigi 115398943Sluigi case O_LIMIT: 115498943Sluigi { 115598943Sluigi struct _s_x *p = limit_masks; 115698943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 115798943Sluigi u_int8_t x = c->limit_mask; 115898943Sluigi char *comma = " "; 115998943Sluigi 116098943Sluigi printf(" limit"); 116198943Sluigi for ( ; p->x != 0 ; p++) 116299909Sluigi if ((x & p->x) == p->x) { 116398943Sluigi x &= ~p->x; 116498943Sluigi printf("%s%s", comma, p->s); 116598943Sluigi comma = ","; 116698943Sluigi } 116798943Sluigi printf(" %d", c->conn_limit); 116898943Sluigi } 116998943Sluigi break; 117098943Sluigi 117198943Sluigi default: 117298943Sluigi printf(" [opcode %d len %d]", 117398943Sluigi cmd->opcode, cmd->len); 117498943Sluigi } 117598943Sluigi } 117698943Sluigi if (cmd->len & F_OR) { 117798943Sluigi printf(" or"); 117898943Sluigi or_block = 1; 117998943Sluigi } else if (or_block) { 118098943Sluigi printf(" }"); 118198943Sluigi or_block = 0; 118298943Sluigi } 118398943Sluigi } 1184102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 118598943Sluigi 118698943Sluigi printf("\n"); 118798943Sluigi} 118898943Sluigi 118998943Sluigistatic void 119098943Sluigishow_dyn_ipfw(ipfw_dyn_rule *d) 119198943Sluigi{ 119298943Sluigi struct protoent *pe; 119398943Sluigi struct in_addr a; 119498943Sluigi 119598943Sluigi if (!do_expired) { 119698943Sluigi if (!d->expire && !(d->dyn_type == O_LIMIT_PARENT)) 119798943Sluigi return; 119898943Sluigi } 119998943Sluigi 120098943Sluigi printf("%05d %10qu %10qu (%ds)", 1201105887Smux d->rulenum, d->pcnt, d->bcnt, d->expire); 120298943Sluigi switch (d->dyn_type) { 120398943Sluigi case O_LIMIT_PARENT: 120498943Sluigi printf(" PARENT %d", d->count); 120598943Sluigi break; 120698943Sluigi case O_LIMIT: 120798943Sluigi printf(" LIMIT"); 120898943Sluigi break; 120998943Sluigi case O_KEEP_STATE: /* bidir, no mask */ 121098943Sluigi printf(" STATE"); 121198943Sluigi break; 121298943Sluigi } 121398943Sluigi 121498943Sluigi if ((pe = getprotobynumber(d->id.proto)) != NULL) 121598943Sluigi printf(" %s", pe->p_name); 121698943Sluigi else 121798943Sluigi printf(" proto %u", d->id.proto); 121898943Sluigi 121998943Sluigi a.s_addr = htonl(d->id.src_ip); 122098943Sluigi printf(" %s %d", inet_ntoa(a), d->id.src_port); 122198943Sluigi 122298943Sluigi a.s_addr = htonl(d->id.dst_ip); 122398943Sluigi printf(" <-> %s %d", inet_ntoa(a), d->id.dst_port); 122498943Sluigi printf("\n"); 122598943Sluigi} 122698943Sluigi 122798943Sluigiint 122898943Sluigisort_q(const void *pa, const void *pb) 122998943Sluigi{ 123098943Sluigi int rev = (do_sort < 0); 123198943Sluigi int field = rev ? -do_sort : do_sort; 123298943Sluigi long long res = 0; 123398943Sluigi const struct dn_flow_queue *a = pa; 123498943Sluigi const struct dn_flow_queue *b = pb; 123598943Sluigi 123698943Sluigi switch (field) { 123798943Sluigi case 1: /* pkts */ 123898943Sluigi res = a->len - b->len; 123998943Sluigi break; 124098943Sluigi case 2: /* bytes */ 124198943Sluigi res = a->len_bytes - b->len_bytes; 124298943Sluigi break; 124398943Sluigi 124498943Sluigi case 3: /* tot pkts */ 124598943Sluigi res = a->tot_pkts - b->tot_pkts; 124698943Sluigi break; 124798943Sluigi 124898943Sluigi case 4: /* tot bytes */ 124998943Sluigi res = a->tot_bytes - b->tot_bytes; 125098943Sluigi break; 125198943Sluigi } 125298943Sluigi if (res < 0) 125398943Sluigi res = -1; 125498943Sluigi if (res > 0) 125598943Sluigi res = 1; 125698943Sluigi return (int)(rev ? res : -res); 125798943Sluigi} 125898943Sluigi 125998943Sluigistatic void 126098943Sluigilist_queues(struct dn_flow_set *fs, struct dn_flow_queue *q) 126198943Sluigi{ 126298943Sluigi int l; 126398943Sluigi 126498943Sluigi printf(" mask: 0x%02x 0x%08x/0x%04x -> 0x%08x/0x%04x\n", 126598943Sluigi fs->flow_mask.proto, 126698943Sluigi fs->flow_mask.src_ip, fs->flow_mask.src_port, 126798943Sluigi fs->flow_mask.dst_ip, fs->flow_mask.dst_port); 126898943Sluigi if (fs->rq_elements == 0) 126998943Sluigi return; 127098943Sluigi 127198943Sluigi printf("BKT Prot ___Source IP/port____ " 127298943Sluigi "____Dest. IP/port____ Tot_pkt/bytes Pkt/Byte Drp\n"); 127398943Sluigi if (do_sort != 0) 127498943Sluigi heapsort(q, fs->rq_elements, sizeof *q, sort_q); 127598943Sluigi for (l = 0; l < fs->rq_elements; l++) { 127698943Sluigi struct in_addr ina; 127798943Sluigi struct protoent *pe; 127898943Sluigi 127998943Sluigi ina.s_addr = htonl(q[l].id.src_ip); 128098943Sluigi printf("%3d ", q[l].hash_slot); 128198943Sluigi pe = getprotobynumber(q[l].id.proto); 128298943Sluigi if (pe) 128398943Sluigi printf("%-4s ", pe->p_name); 128498943Sluigi else 128598943Sluigi printf("%4u ", q[l].id.proto); 128698943Sluigi printf("%15s/%-5d ", 128798943Sluigi inet_ntoa(ina), q[l].id.src_port); 128898943Sluigi ina.s_addr = htonl(q[l].id.dst_ip); 128998943Sluigi printf("%15s/%-5d ", 129098943Sluigi inet_ntoa(ina), q[l].id.dst_port); 129198943Sluigi printf("%4qu %8qu %2u %4u %3u\n", 129298943Sluigi q[l].tot_pkts, q[l].tot_bytes, 129398943Sluigi q[l].len, q[l].len_bytes, q[l].drops); 129498943Sluigi if (verbose) 129598943Sluigi printf(" S %20qd F %20qd\n", 129698943Sluigi q[l].S, q[l].F); 129798943Sluigi } 129898943Sluigi} 129998943Sluigi 130098943Sluigistatic void 130198943Sluigiprint_flowset_parms(struct dn_flow_set *fs, char *prefix) 130298943Sluigi{ 130398943Sluigi int l; 130498943Sluigi char qs[30]; 130598943Sluigi char plr[30]; 130698943Sluigi char red[90]; /* Display RED parameters */ 130798943Sluigi 130898943Sluigi l = fs->qsize; 130998943Sluigi if (fs->flags_fs & DN_QSIZE_IS_BYTES) { 131098943Sluigi if (l >= 8192) 131198943Sluigi sprintf(qs, "%d KB", l / 1024); 131298943Sluigi else 131398943Sluigi sprintf(qs, "%d B", l); 131498943Sluigi } else 131598943Sluigi sprintf(qs, "%3d sl.", l); 131698943Sluigi if (fs->plr) 131798943Sluigi sprintf(plr, "plr %f", 1.0 * fs->plr / (double)(0x7fffffff)); 131898943Sluigi else 131998943Sluigi plr[0] = '\0'; 132098943Sluigi if (fs->flags_fs & DN_IS_RED) /* RED parameters */ 132198943Sluigi sprintf(red, 132298943Sluigi "\n\t %cRED w_q %f min_th %d max_th %d max_p %f", 132398943Sluigi (fs->flags_fs & DN_IS_GENTLE_RED) ? 'G' : ' ', 132498943Sluigi 1.0 * fs->w_q / (double)(1 << SCALE_RED), 132598943Sluigi SCALE_VAL(fs->min_th), 132698943Sluigi SCALE_VAL(fs->max_th), 132798943Sluigi 1.0 * fs->max_p / (double)(1 << SCALE_RED)); 132898943Sluigi else 132998943Sluigi sprintf(red, "droptail"); 133098943Sluigi 133198943Sluigi printf("%s %s%s %d queues (%d buckets) %s\n", 133298943Sluigi prefix, qs, plr, fs->rq_elements, fs->rq_size, red); 133398943Sluigi} 133498943Sluigi 133598943Sluigistatic void 133698943Sluigilist_pipes(void *data, int nbytes, int ac, char *av[]) 133798943Sluigi{ 133898943Sluigi u_long rulenum; 133998943Sluigi void *next = data; 134098943Sluigi struct dn_pipe *p = (struct dn_pipe *) data; 134198943Sluigi struct dn_flow_set *fs; 134298943Sluigi struct dn_flow_queue *q; 134398943Sluigi int l; 134498943Sluigi 134598943Sluigi if (ac > 0) 134698943Sluigi rulenum = strtoul(*av++, NULL, 10); 134798943Sluigi else 134898943Sluigi rulenum = 0; 134998943Sluigi for (; nbytes >= sizeof *p; p = (struct dn_pipe *)next) { 135098943Sluigi double b = p->bandwidth; 135198943Sluigi char buf[30]; 135298943Sluigi char prefix[80]; 135398943Sluigi 135498943Sluigi if (p->next != (struct dn_pipe *)DN_IS_PIPE) 135598943Sluigi break; /* done with pipes, now queues */ 135698943Sluigi 135798943Sluigi /* 135898943Sluigi * compute length, as pipe have variable size 135998943Sluigi */ 136098943Sluigi l = sizeof(*p) + p->fs.rq_elements * sizeof(*q); 136198943Sluigi next = (void *)p + l; 136298943Sluigi nbytes -= l; 136398943Sluigi 136498943Sluigi if (rulenum != 0 && rulenum != p->pipe_nr) 136598943Sluigi continue; 136698943Sluigi 136798943Sluigi /* 136898943Sluigi * Print rate (or clocking interface) 136998943Sluigi */ 137098943Sluigi if (p->if_name[0] != '\0') 137198943Sluigi sprintf(buf, "%s", p->if_name); 137298943Sluigi else if (b == 0) 137398943Sluigi sprintf(buf, "unlimited"); 137498943Sluigi else if (b >= 1000000) 137598943Sluigi sprintf(buf, "%7.3f Mbit/s", b/1000000); 137698943Sluigi else if (b >= 1000) 137798943Sluigi sprintf(buf, "%7.3f Kbit/s", b/1000); 137898943Sluigi else 137998943Sluigi sprintf(buf, "%7.3f bit/s ", b); 138098943Sluigi 138198943Sluigi sprintf(prefix, "%05d: %s %4d ms ", 138298943Sluigi p->pipe_nr, buf, p->delay); 138398943Sluigi print_flowset_parms(&(p->fs), prefix); 138498943Sluigi if (verbose) 138598943Sluigi printf(" V %20qd\n", p->V >> MY_M); 138698943Sluigi 138798943Sluigi q = (struct dn_flow_queue *)(p+1); 138898943Sluigi list_queues(&(p->fs), q); 138998943Sluigi } 139098943Sluigi for (fs = next; nbytes >= sizeof *fs; fs = next) { 139198943Sluigi char prefix[80]; 139298943Sluigi 139398943Sluigi if (fs->next != (struct dn_flow_set *)DN_IS_QUEUE) 139498943Sluigi break; 139598943Sluigi l = sizeof(*fs) + fs->rq_elements * sizeof(*q); 139698943Sluigi next = (void *)fs + l; 139798943Sluigi nbytes -= l; 139898943Sluigi q = (struct dn_flow_queue *)(fs+1); 139998943Sluigi sprintf(prefix, "q%05d: weight %d pipe %d ", 140098943Sluigi fs->fs_nr, fs->weight, fs->parent_nr); 140198943Sluigi print_flowset_parms(fs, prefix); 140298943Sluigi list_queues(fs, q); 140398943Sluigi } 140498943Sluigi} 140598943Sluigi 1406101978Sluigi/* 1407101978Sluigi * This one handles all set-related commands 1408101978Sluigi * ipfw set { show | enable | disable } 1409101978Sluigi * ipfw set swap X Y 1410101978Sluigi * ipfw set move X to Y 1411101978Sluigi * ipfw set move rule X to Y 1412101978Sluigi */ 141398943Sluigistatic void 1414101978Sluigisets_handler(int ac, char *av[]) 1415101978Sluigi{ 1416101978Sluigi u_int32_t set_disable, masks[2]; 1417101978Sluigi int i, nbytes; 1418101978Sluigi u_int16_t rulenum; 1419101978Sluigi u_int8_t cmd, new_set; 1420101978Sluigi 1421101978Sluigi ac--; 1422101978Sluigi av++; 1423101978Sluigi 1424101978Sluigi if (!ac) 1425101978Sluigi errx(EX_USAGE, "set needs command"); 1426101978Sluigi if (!strncmp(*av, "show", strlen(*av)) ) { 1427101978Sluigi void *data; 1428101978Sluigi char *msg; 1429101978Sluigi 1430101978Sluigi nbytes = sizeof(struct ip_fw); 1431101978Sluigi if ((data = malloc(nbytes)) == NULL) 1432101978Sluigi err(EX_OSERR, "malloc"); 1433101978Sluigi if (getsockopt(s, IPPROTO_IP, IP_FW_GET, data, &nbytes) < 0) 1434101978Sluigi err(EX_OSERR, "getsockopt(IP_FW_GET)"); 1435105887Smux set_disable = ((struct ip_fw *)data)->set_disable; 1436101978Sluigi 1437101978Sluigi for (i = 0, msg = "disable" ; i < 31; i++) 1438101978Sluigi if ( (set_disable & (1<<i))) { 1439101978Sluigi printf("%s %d", msg, i); 1440101978Sluigi msg = ""; 1441101978Sluigi } 1442101978Sluigi msg = (set_disable) ? " enable" : "enable"; 1443101978Sluigi for (i = 0; i < 31; i++) 1444101978Sluigi if ( !(set_disable & (1<<i))) { 1445101978Sluigi printf("%s %d", msg, i); 1446101978Sluigi msg = ""; 1447101978Sluigi } 1448101978Sluigi printf("\n"); 1449101978Sluigi } else if (!strncmp(*av, "swap", strlen(*av))) { 1450101978Sluigi ac--; av++; 1451101978Sluigi if (ac != 2) 1452101978Sluigi errx(EX_USAGE, "set swap needs 2 set numbers\n"); 1453101978Sluigi rulenum = atoi(av[0]); 1454101978Sluigi new_set = atoi(av[1]); 1455101978Sluigi if (!isdigit(*(av[0])) || rulenum > 30) 1456101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[0]); 1457101978Sluigi if (!isdigit(*(av[1])) || new_set > 30) 1458101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[1]); 1459101978Sluigi masks[0] = (4 << 24) | (new_set << 16) | (rulenum); 1460101978Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, 1461101978Sluigi masks, sizeof(u_int32_t)); 1462101978Sluigi } else if (!strncmp(*av, "move", strlen(*av))) { 1463101978Sluigi ac--; av++; 1464101978Sluigi if (ac && !strncmp(*av, "rule", strlen(*av))) { 1465101978Sluigi cmd = 2; 1466101978Sluigi ac--; av++; 1467101978Sluigi } else 1468101978Sluigi cmd = 3; 1469101978Sluigi if (ac != 3 || strncmp(av[1], "to", strlen(*av))) 1470101978Sluigi errx(EX_USAGE, "syntax: set move [rule] X to Y\n"); 1471101978Sluigi rulenum = atoi(av[0]); 1472101978Sluigi new_set = atoi(av[2]); 1473101978Sluigi if (!isdigit(*(av[0])) || (cmd == 3 && rulenum > 30) || 1474101978Sluigi (cmd == 2 && rulenum == 65535) ) 1475101978Sluigi errx(EX_DATAERR, "invalid source number %s\n", av[0]); 1476101978Sluigi if (!isdigit(*(av[2])) || new_set > 30) 1477101978Sluigi errx(EX_DATAERR, "invalid dest. set %s\n", av[1]); 1478101978Sluigi masks[0] = (cmd << 24) | (new_set << 16) | (rulenum); 1479101978Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, 1480101978Sluigi masks, sizeof(u_int32_t)); 1481101978Sluigi } else if (!strncmp(*av, "disable", strlen(*av)) || 1482101978Sluigi !strncmp(*av, "enable", strlen(*av)) ) { 1483101978Sluigi int which = !strncmp(*av, "enable", strlen(*av)) ? 1 : 0; 1484101978Sluigi 1485101978Sluigi ac--; av++; 1486101978Sluigi masks[0] = masks[1] = 0; 1487101978Sluigi 1488101978Sluigi while (ac) { 1489101978Sluigi if (isdigit(**av)) { 1490101978Sluigi i = atoi(*av); 1491101978Sluigi if (i < 0 || i > 30) 1492101978Sluigi errx(EX_DATAERR, 1493101978Sluigi "invalid set number %d\n", i); 1494101978Sluigi masks[which] |= (1<<i); 1495101978Sluigi } else if (!strncmp(*av, "disable", strlen(*av))) 1496101978Sluigi which = 0; 1497101978Sluigi else if (!strncmp(*av, "enable", strlen(*av))) 1498101978Sluigi which = 1; 1499101978Sluigi else 1500101978Sluigi errx(EX_DATAERR, 1501101978Sluigi "invalid set command %s\n", *av); 1502101978Sluigi av++; ac--; 1503101978Sluigi } 1504101978Sluigi if ( (masks[0] & masks[1]) != 0 ) 1505101978Sluigi errx(EX_DATAERR, 1506101978Sluigi "cannot enable and disable the same set\n"); 1507101978Sluigi 1508101978Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, masks, sizeof(masks)); 1509101978Sluigi if (i) 1510101978Sluigi warn("set enable/disable: setsockopt(IP_FW_DEL)"); 1511101978Sluigi } else 1512101978Sluigi errx(EX_USAGE, "invalid set command %s\n", *av); 1513101978Sluigi} 1514101978Sluigi 1515101978Sluigistatic void 151698943Sluigilist(int ac, char *av[]) 151798943Sluigi{ 151898943Sluigi struct ip_fw *r; 151998943Sluigi ipfw_dyn_rule *dynrules, *d; 152098943Sluigi 152198943Sluigi void *lim, *data = NULL; 152298943Sluigi int n, nbytes, nstat, ndyn; 152398943Sluigi int exitval = EX_OK; 152498943Sluigi int lac; 152598943Sluigi char **lav; 152698943Sluigi u_long rnum; 152798943Sluigi char *endptr; 152898943Sluigi int seen = 0; 152998943Sluigi 153098943Sluigi const int ocmd = do_pipe ? IP_DUMMYNET_GET : IP_FW_GET; 153198943Sluigi int nalloc = 1024; /* start somewhere... */ 153298943Sluigi 153398943Sluigi ac--; 153498943Sluigi av++; 153598943Sluigi 153698943Sluigi /* get rules or pipes from kernel, resizing array as necessary */ 153798943Sluigi nbytes = nalloc; 153898943Sluigi 153998943Sluigi while (nbytes >= nalloc) { 154098943Sluigi nalloc = nalloc * 2 + 200; 154198943Sluigi nbytes = nalloc; 154298943Sluigi if ((data = realloc(data, nbytes)) == NULL) 154398943Sluigi err(EX_OSERR, "realloc"); 154498943Sluigi if (getsockopt(s, IPPROTO_IP, ocmd, data, &nbytes) < 0) 154598943Sluigi err(EX_OSERR, "getsockopt(IP_%s_GET)", 154698943Sluigi do_pipe ? "DUMMYNET" : "FW"); 154798943Sluigi } 154898943Sluigi 154998943Sluigi if (do_pipe) { 155098943Sluigi list_pipes(data, nbytes, ac, av); 155198943Sluigi goto done; 155298943Sluigi } 155398943Sluigi 155498943Sluigi /* 155598943Sluigi * Count static rules. They have variable size so we 155698943Sluigi * need to scan the list to count them. 155798943Sluigi */ 155898943Sluigi for (nstat = 1, r = data, lim = data + nbytes; 155998943Sluigi r->rulenum < 65535 && (void *)r < lim; 156098943Sluigi ++nstat, r = (void *)r + RULESIZE(r) ) 156198943Sluigi ; /* nothing */ 156298943Sluigi 156398943Sluigi /* 156498943Sluigi * Count dynamic rules. This is easier as they have 156598943Sluigi * fixed size. 156698943Sluigi */ 156798943Sluigi r = (void *)r + RULESIZE(r); 156898943Sluigi dynrules = (ipfw_dyn_rule *)r ; 156998943Sluigi n = (void *)r - data; 157098943Sluigi ndyn = (nbytes - n) / sizeof *dynrules; 157198943Sluigi 157298943Sluigi /* if no rule numbers were specified, list all rules */ 157398943Sluigi if (ac == 0) { 157498943Sluigi for (n = 0, r = data; n < nstat; 157598943Sluigi n++, r = (void *)r + RULESIZE(r) ) 157698943Sluigi show_ipfw(r); 157798943Sluigi 157898943Sluigi if (do_dynamic && ndyn) { 157998943Sluigi printf("## Dynamic rules (%d):\n", ndyn); 158098943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) 158198943Sluigi show_dyn_ipfw(d); 158298943Sluigi } 158398943Sluigi goto done; 158498943Sluigi } 158598943Sluigi 158698943Sluigi /* display specific rules requested on command line */ 158798943Sluigi 158898943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 158998943Sluigi /* convert command line rule # */ 159098943Sluigi rnum = strtoul(*lav++, &endptr, 10); 159198943Sluigi if (*endptr) { 159298943Sluigi exitval = EX_USAGE; 159398943Sluigi warnx("invalid rule number: %s", *(lav - 1)); 159498943Sluigi continue; 159598943Sluigi } 159698943Sluigi for (n = seen = 0, r = data; n < nstat; 159798943Sluigi n++, r = (void *)r + RULESIZE(r) ) { 159898943Sluigi if (r->rulenum > rnum) 159998943Sluigi break; 160098943Sluigi if (r->rulenum == rnum) { 160198943Sluigi show_ipfw(r); 160298943Sluigi seen = 1; 160398943Sluigi } 160498943Sluigi } 160598943Sluigi if (!seen) { 160698943Sluigi /* give precedence to other error(s) */ 160798943Sluigi if (exitval == EX_OK) 160898943Sluigi exitval = EX_UNAVAILABLE; 160998943Sluigi warnx("rule %lu does not exist", rnum); 161098943Sluigi } 161198943Sluigi } 161298943Sluigi 161398943Sluigi if (do_dynamic && ndyn) { 161498943Sluigi printf("## Dynamic rules:\n"); 161598943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 161698943Sluigi rnum = strtoul(*lav++, &endptr, 10); 161798943Sluigi if (*endptr) 161898943Sluigi /* already warned */ 161998943Sluigi continue; 162098943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1621105887Smux if (d->rulenum > rnum) 162298943Sluigi break; 1623105887Smux if (d->rulenum == rnum) 162498943Sluigi show_dyn_ipfw(d); 162598943Sluigi } 162698943Sluigi } 162798943Sluigi } 162898943Sluigi 162998943Sluigi ac = 0; 163098943Sluigi 163198943Sluigidone: 163298943Sluigi free(data); 163398943Sluigi 163498943Sluigi if (exitval != EX_OK) 163598943Sluigi exit(exitval); 163698943Sluigi} 163798943Sluigi 163898943Sluigistatic void 163998943Sluigishow_usage(void) 164098943Sluigi{ 164198943Sluigi fprintf(stderr, "usage: ipfw [options]\n" 164298943Sluigi" add [number] rule\n" 164398943Sluigi" pipe number config [pipeconfig]\n" 164498943Sluigi" queue number config [queueconfig]\n" 164598943Sluigi" [pipe] flush\n" 164698943Sluigi" [pipe] delete number ...\n" 164798943Sluigi" [pipe] {list|show} [number ...]\n" 164898943Sluigi" {zero|resetlog} [number ...]\n" 164998943Sluigi"do \"ipfw -h\" or see ipfw manpage for details\n" 165098943Sluigi); 165198943Sluigi 165298943Sluigi exit(EX_USAGE); 165398943Sluigi} 165498943Sluigi 165598943Sluigistatic void 165698943Sluigihelp(void) 165798943Sluigi{ 165898943Sluigi 165998943Sluigi fprintf(stderr, "ipfw syntax summary:\n" 166098943Sluigi"ipfw add [N] [prob {0..1}] ACTION [log [logamount N]] ADDR OPTIONS\n" 166198943Sluigi"ipfw {pipe|queue} N config BODY\n" 166298943Sluigi"ipfw [pipe] {zero|delete|show} [N{,N}]\n" 166398943Sluigi"\n" 166498943Sluigi"RULE: [1..] [PROB] BODY\n" 166598943Sluigi"RULENUM: INTEGER(1..65534)\n" 166698943Sluigi"PROB: prob REAL(0..1)\n" 166798943Sluigi"BODY: check-state [LOG] (no body) |\n" 166898943Sluigi" ACTION [LOG] MATCH_ADDR [OPTION_LIST]\n" 166998943Sluigi"ACTION: check-state | allow | count | deny | reject | skipto N |\n" 167098943Sluigi" {divert|tee} PORT | forward ADDR | pipe N | queue N\n" 167198943Sluigi"ADDR: [ MAC dst src ether_type ] \n" 167298943Sluigi" [ from IPLIST [ PORT ] to IPLIST [ PORTLIST ] ]\n" 167398943Sluigi"IPLIST: IPADDR | ( IPADDR or ... or IPADDR )\n" 167498943Sluigi"IPADDR: [not] { any | me | ip | ip/bits | ip:mask | ip/bits{x,y,z} }\n" 167598943Sluigi"OPTION_LIST: OPTION [,OPTION_LIST]\n" 167698943Sluigi); 167798943Sluigiexit(0); 167898943Sluigi} 167998943Sluigi 168098943Sluigi 168198943Sluigistatic int 168298943Sluigilookup_host (char *host, struct in_addr *ipaddr) 168398943Sluigi{ 168498943Sluigi struct hostent *he; 168598943Sluigi 168698943Sluigi if (!inet_aton(host, ipaddr)) { 168798943Sluigi if ((he = gethostbyname(host)) == NULL) 168898943Sluigi return(-1); 168998943Sluigi *ipaddr = *(struct in_addr *)he->h_addr_list[0]; 169098943Sluigi } 169198943Sluigi return(0); 169298943Sluigi} 169398943Sluigi 169498943Sluigi/* 169598943Sluigi * fills the addr and mask fields in the instruction as appropriate from av. 169698943Sluigi * Update length as appropriate. 169798943Sluigi * The following formats are allowed: 169898943Sluigi * any matches any IP. Actually returns an empty instruction. 169998943Sluigi * me returns O_IP_*_ME 170098943Sluigi * 1.2.3.4 single IP address 170198943Sluigi * 1.2.3.4:5.6.7.8 address:mask 170298943Sluigi * 1.2.3.4/24 address/mask 170398943Sluigi * 1.2.3.4/26{1,6,5,4,23} set of addresses in a subnet 170498943Sluigi */ 170598943Sluigistatic void 170698943Sluigifill_ip(ipfw_insn_ip *cmd, char *av) 170798943Sluigi{ 170898943Sluigi char *p = 0, md = 0; 170998943Sluigi u_int32_t i; 171098943Sluigi 171198943Sluigi cmd->o.len &= ~F_LEN_MASK; /* zero len */ 171298943Sluigi 171398943Sluigi if (!strncmp(av, "any", strlen(av))) 171498943Sluigi return; 171598943Sluigi 171698943Sluigi if (!strncmp(av, "me", strlen(av))) { 171798943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn); 171898943Sluigi return; 171998943Sluigi } 172098943Sluigi 172198943Sluigi p = strchr(av, '/'); 172298943Sluigi if (!p) 172398943Sluigi p = strchr(av, ':'); 172498943Sluigi if (p) { 172598943Sluigi md = *p; 172698943Sluigi *p++ = '\0'; 172798943Sluigi } 172898943Sluigi 172998943Sluigi if (lookup_host(av, &cmd->addr) != 0) 173098943Sluigi errx(EX_NOHOST, "hostname ``%s'' unknown", av); 173198943Sluigi switch (md) { 173298943Sluigi case ':': 173398943Sluigi if (!inet_aton(p, &cmd->mask)) 173498943Sluigi errx(EX_DATAERR, "bad netmask ``%s''", p); 173598943Sluigi break; 173698943Sluigi case '/': 173798943Sluigi i = atoi(p); 173898943Sluigi if (i == 0) 173998943Sluigi cmd->mask.s_addr = htonl(0); 174098943Sluigi else if (i > 32) 174198943Sluigi errx(EX_DATAERR, "bad width ``%s''", p); 174298943Sluigi else 174398943Sluigi cmd->mask.s_addr = htonl(~0 << (32 - i)); 174498943Sluigi break; 174598943Sluigi default: 174698943Sluigi cmd->mask.s_addr = htonl(~0); 174798943Sluigi break; 174898943Sluigi } 174998943Sluigi cmd->addr.s_addr &= cmd->mask.s_addr; 175098943Sluigi /* 175198943Sluigi * now look if we have a set of addresses. They are stored as follows: 175298943Sluigi * arg1 is the set size (powers of 2, 2..256) 175398943Sluigi * addr is the base address IN HOST FORMAT 175498943Sluigi * mask.. is an array of u_int32_t with bits set. 175598943Sluigi */ 175698943Sluigi if (p) 175798943Sluigi p = strchr(p, '{'); 175898943Sluigi if (p) { /* fetch addresses */ 175998943Sluigi u_int32_t *d; 176098943Sluigi int low, high; 176198943Sluigi int i = contigmask((u_char *)&(cmd->mask), 32); 176298943Sluigi 176398943Sluigi if (i < 24 || i > 31) { 176498943Sluigi fprintf(stderr, "invalid set with mask %d\n", 176598943Sluigi i); 176698943Sluigi exit(0); 176798943Sluigi } 176898943Sluigi cmd->o.arg1 = 1<<(32-i); 176998943Sluigi cmd->addr.s_addr = ntohl(cmd->addr.s_addr); 177098943Sluigi d = (u_int32_t *)&cmd->mask; 177198943Sluigi cmd->o.opcode = O_IP_DST_SET; /* default */ 177298943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32) + (cmd->o.arg1+31)/32; 1773101117Sluigi for (i = 0; i < (cmd->o.arg1+31)/32 ; i++) 177498943Sluigi d[i] = 0; /* clear masks */ 177598943Sluigi 177698943Sluigi av = p+1; 177798943Sluigi low = cmd->addr.s_addr & 0xff; 177898943Sluigi high = low + cmd->o.arg1 - 1; 177998943Sluigi while (isdigit(*av)) { 178098943Sluigi char *s; 178198943Sluigi u_int16_t a = strtol(av, &s, 0); 178298943Sluigi 178398943Sluigi if (s == av) /* no parameter */ 178498943Sluigi break; 178598943Sluigi if (a < low || a > high) { 178698943Sluigi fprintf(stderr, "addr %d out of range [%d-%d]\n", 178798943Sluigi a, low, high); 178898943Sluigi exit(0); 178998943Sluigi } 179098943Sluigi a -= low; 179198943Sluigi d[ a/32] |= 1<<(a & 31); 179298943Sluigi if (*s != ',') 179398943Sluigi break; 179498943Sluigi av = s+1; 179598943Sluigi } 179698943Sluigi return; 179798943Sluigi } 179898943Sluigi 179998943Sluigi if (cmd->mask.s_addr == 0) { /* any */ 180098943Sluigi if (cmd->o.len & F_NOT) 180198943Sluigi errx(EX_DATAERR, "not any never matches"); 180298943Sluigi else /* useless, nuke it */ 180398943Sluigi return; 180498943Sluigi } else if (cmd->mask.s_addr == IP_MASK_ALL) /* one IP */ 180598943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 180698943Sluigi else /* addr/mask */ 180798943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_ip); 180898943Sluigi} 180998943Sluigi 181098943Sluigi 181198943Sluigi/* 181298943Sluigi * helper function to process a set of flags and set bits in the 181398943Sluigi * appropriate masks. 181498943Sluigi */ 181598943Sluigistatic void 181698943Sluigifill_flags(ipfw_insn *cmd, enum ipfw_opcodes opcode, 181798943Sluigi struct _s_x *flags, char *p) 181898943Sluigi{ 181998943Sluigi u_int8_t set=0, clear=0; 182098943Sluigi 182198943Sluigi while (p && *p) { 182298943Sluigi char *q; /* points to the separator */ 182398943Sluigi int val; 182498943Sluigi u_int8_t *which; /* mask we are working on */ 182598943Sluigi 182698943Sluigi if (*p == '!') { 182798943Sluigi p++; 182898943Sluigi which = &clear; 182998943Sluigi } else 183098943Sluigi which = &set; 183198943Sluigi q = strchr(p, ','); 183298943Sluigi if (q) 183398943Sluigi *q++ = '\0'; 183498943Sluigi val = match_token(flags, p); 183598943Sluigi if (val <= 0) 183698943Sluigi errx(EX_DATAERR, "invalid flag %s", p); 183798943Sluigi *which |= (u_int8_t)val; 183898943Sluigi p = q; 183998943Sluigi } 184098943Sluigi cmd->opcode = opcode; 184198943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | 1; 184298943Sluigi cmd->arg1 = (set & 0xff) | ( (clear & 0xff) << 8); 184398943Sluigi} 184498943Sluigi 184598943Sluigi 184698943Sluigistatic void 184798943Sluigidelete(int ac, char *av[]) 184898943Sluigi{ 1849101978Sluigi u_int32_t rulenum; 185098943Sluigi struct dn_pipe pipe; 185198943Sluigi int i; 185298943Sluigi int exitval = EX_OK; 1853101628Sluigi int do_set = 0; 185498943Sluigi 185598943Sluigi memset(&pipe, 0, sizeof pipe); 185698943Sluigi 185798943Sluigi av++; ac--; 1858101641Sluigi if (ac > 0 && !strncmp(*av, "set", strlen(*av))) { 1859101978Sluigi do_set = 1; /* delete set */ 1860101628Sluigi ac--; av++; 1861101978Sluigi } 186298943Sluigi 186398943Sluigi /* Rule number */ 186498943Sluigi while (ac && isdigit(**av)) { 186598943Sluigi i = atoi(*av); av++; ac--; 186698943Sluigi if (do_pipe) { 186798943Sluigi if (do_pipe == 1) 186898943Sluigi pipe.pipe_nr = i; 186998943Sluigi else 187098943Sluigi pipe.fs.fs_nr = i; 187198943Sluigi i = setsockopt(s, IPPROTO_IP, IP_DUMMYNET_DEL, 187298943Sluigi &pipe, sizeof pipe); 187398943Sluigi if (i) { 187498943Sluigi exitval = 1; 187598943Sluigi warn("rule %u: setsockopt(IP_DUMMYNET_DEL)", 187698943Sluigi do_pipe == 1 ? pipe.pipe_nr : 187798943Sluigi pipe.fs.fs_nr); 187898943Sluigi } 187998943Sluigi } else { 1880101978Sluigi rulenum = (i & 0xffff) | (do_set << 24); 188198943Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, &rulenum, 188298943Sluigi sizeof rulenum); 188398943Sluigi if (i) { 188498943Sluigi exitval = EX_UNAVAILABLE; 188598943Sluigi warn("rule %u: setsockopt(IP_FW_DEL)", 188698943Sluigi rulenum); 188798943Sluigi } 188898943Sluigi } 188998943Sluigi } 189098943Sluigi if (exitval != EX_OK) 189198943Sluigi exit(exitval); 189298943Sluigi} 189398943Sluigi 189498943Sluigi 189598943Sluigi/* 189698943Sluigi * fill the interface structure. We do not check the name as we can 189798943Sluigi * create interfaces dynamically, so checking them at insert time 189898943Sluigi * makes relatively little sense. 189998943Sluigi * A '*' following the name means any unit. 190098943Sluigi */ 190198943Sluigistatic void 190298943Sluigifill_iface(ipfw_insn_if *cmd, char *arg) 190398943Sluigi{ 190498943Sluigi cmd->name[0] = '\0'; 190598943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_if); 190698943Sluigi 190798943Sluigi /* Parse the interface or address */ 190898943Sluigi if (!strcmp(arg, "any")) 190998943Sluigi cmd->o.len = 0; /* effectively ignore this command */ 191098943Sluigi else if (!isdigit(*arg)) { 191198943Sluigi char *q; 191298943Sluigi 191398943Sluigi strncpy(cmd->name, arg, sizeof(cmd->name)); 191498943Sluigi cmd->name[sizeof(cmd->name) - 1] = '\0'; 191598943Sluigi /* find first digit or wildcard */ 191698943Sluigi for (q = cmd->name; *q && !isdigit(*q) && *q != '*'; q++) 191798943Sluigi continue; 191898943Sluigi cmd->p.unit = (*q == '*') ? -1 : atoi(q); 191998943Sluigi *q = '\0'; 192098943Sluigi } else if (!inet_aton(arg, &cmd->p.ip)) 192198943Sluigi errx(EX_DATAERR, "bad ip address ``%s''", arg); 192298943Sluigi} 192398943Sluigi 192498943Sluigi/* 192598943Sluigi * the following macro returns an error message if we run out of 192698943Sluigi * arguments. 192798943Sluigi */ 192898943Sluigi#define NEED1(msg) {if (!ac) errx(EX_USAGE, msg);} 192998943Sluigi 193098943Sluigistatic void 193198943Sluigiconfig_pipe(int ac, char **av) 193298943Sluigi{ 193398943Sluigi struct dn_pipe pipe; 193498943Sluigi int i; 193598943Sluigi char *end; 193698943Sluigi u_int32_t a; 193798943Sluigi void *par = NULL; 193898943Sluigi 193998943Sluigi memset(&pipe, 0, sizeof pipe); 194098943Sluigi 194198943Sluigi av++; ac--; 194298943Sluigi /* Pipe number */ 194398943Sluigi if (ac && isdigit(**av)) { 194498943Sluigi i = atoi(*av); av++; ac--; 194598943Sluigi if (do_pipe == 1) 194698943Sluigi pipe.pipe_nr = i; 194798943Sluigi else 194898943Sluigi pipe.fs.fs_nr = i; 194998943Sluigi } 195099475Sluigi while (ac > 0) { 195198943Sluigi double d; 195298943Sluigi int tok = match_token(dummynet_params, *av); 195398943Sluigi ac--; av++; 195498943Sluigi 195598943Sluigi switch(tok) { 1956101978Sluigi case TOK_NOERROR: 1957101978Sluigi pipe.fs.flags_fs |= DN_NOERROR; 1958101978Sluigi break; 1959101978Sluigi 196098943Sluigi case TOK_PLR: 196198943Sluigi NEED1("plr needs argument 0..1\n"); 196298943Sluigi d = strtod(av[0], NULL); 196398943Sluigi if (d > 1) 196498943Sluigi d = 1; 196598943Sluigi else if (d < 0) 196698943Sluigi d = 0; 196798943Sluigi pipe.fs.plr = (int)(d*0x7fffffff); 196898943Sluigi ac--; av++; 196998943Sluigi break; 197098943Sluigi 197198943Sluigi case TOK_QUEUE: 197298943Sluigi NEED1("queue needs queue size\n"); 197398943Sluigi end = NULL; 197498943Sluigi pipe.fs.qsize = strtoul(av[0], &end, 0); 197598943Sluigi if (*end == 'K' || *end == 'k') { 197698943Sluigi pipe.fs.flags_fs |= DN_QSIZE_IS_BYTES; 197798943Sluigi pipe.fs.qsize *= 1024; 197898943Sluigi } else if (*end == 'B' || !strncmp(end, "by", 2)) { 197998943Sluigi pipe.fs.flags_fs |= DN_QSIZE_IS_BYTES; 198098943Sluigi } 198198943Sluigi ac--; av++; 198298943Sluigi break; 198398943Sluigi 198498943Sluigi case TOK_BUCKETS: 198598943Sluigi NEED1("buckets needs argument\n"); 198698943Sluigi pipe.fs.rq_size = strtoul(av[0], NULL, 0); 198798943Sluigi ac--; av++; 198898943Sluigi break; 198998943Sluigi 199098943Sluigi case TOK_MASK: 199198943Sluigi NEED1("mask needs mask specifier\n"); 199298943Sluigi /* 199398943Sluigi * per-flow queue, mask is dst_ip, dst_port, 199498943Sluigi * src_ip, src_port, proto measured in bits 199598943Sluigi */ 199698943Sluigi par = NULL; 199798943Sluigi 199898943Sluigi pipe.fs.flow_mask.dst_ip = 0; 199998943Sluigi pipe.fs.flow_mask.src_ip = 0; 200098943Sluigi pipe.fs.flow_mask.dst_port = 0; 200198943Sluigi pipe.fs.flow_mask.src_port = 0; 200298943Sluigi pipe.fs.flow_mask.proto = 0; 200398943Sluigi end = NULL; 200498943Sluigi 200598943Sluigi while (ac >= 1) { 200698943Sluigi u_int32_t *p32 = NULL; 200798943Sluigi u_int16_t *p16 = NULL; 200898943Sluigi 200998943Sluigi tok = match_token(dummynet_params, *av); 201098943Sluigi ac--; av++; 201198943Sluigi switch(tok) { 201298943Sluigi case TOK_ALL: 201398943Sluigi /* 201498943Sluigi * special case, all bits significant 201598943Sluigi */ 201698943Sluigi pipe.fs.flow_mask.dst_ip = ~0; 201798943Sluigi pipe.fs.flow_mask.src_ip = ~0; 201898943Sluigi pipe.fs.flow_mask.dst_port = ~0; 201998943Sluigi pipe.fs.flow_mask.src_port = ~0; 202098943Sluigi pipe.fs.flow_mask.proto = ~0; 202198943Sluigi pipe.fs.flags_fs |= DN_HAVE_FLOW_MASK; 202298943Sluigi goto end_mask; 202398943Sluigi 202498943Sluigi case TOK_DSTIP: 202598943Sluigi p32 = &pipe.fs.flow_mask.dst_ip; 202698943Sluigi break; 202798943Sluigi 202898943Sluigi case TOK_SRCIP: 202998943Sluigi p32 = &pipe.fs.flow_mask.src_ip; 203098943Sluigi break; 203198943Sluigi 203298943Sluigi case TOK_DSTPORT: 203398943Sluigi p16 = &pipe.fs.flow_mask.dst_port; 203498943Sluigi break; 203598943Sluigi 203698943Sluigi case TOK_SRCPORT: 203798943Sluigi p16 = &pipe.fs.flow_mask.src_port; 203898943Sluigi break; 203998943Sluigi 204098943Sluigi case TOK_PROTO: 204198943Sluigi break; 204298943Sluigi 204398943Sluigi default: 204498943Sluigi ac++; av--; /* backtrack */ 204598943Sluigi goto end_mask; 204698943Sluigi } 204798943Sluigi if (ac < 1) 204898943Sluigi errx(EX_USAGE, "mask: value missing"); 204998943Sluigi if (*av[0] == '/') { 205098943Sluigi a = strtoul(av[0]+1, &end, 0); 205198943Sluigi a = (a == 32) ? ~0 : (1 << a) - 1; 205298943Sluigi } else 205399909Sluigi a = strtoul(av[0], &end, 0); 205498943Sluigi if (p32 != NULL) 205598943Sluigi *p32 = a; 205698943Sluigi else if (p16 != NULL) { 205798943Sluigi if (a > 65535) 205898943Sluigi errx(EX_DATAERR, 205998943Sluigi "mask: must be 16 bit"); 206098943Sluigi *p16 = (u_int16_t)a; 206198943Sluigi } else { 206298943Sluigi if (a > 255) 206398943Sluigi errx(EX_DATAERR, 206498943Sluigi "mask: must be 8 bit"); 206598943Sluigi pipe.fs.flow_mask.proto = (u_int8_t)a; 206698943Sluigi } 206798943Sluigi if (a != 0) 206898943Sluigi pipe.fs.flags_fs |= DN_HAVE_FLOW_MASK; 206998943Sluigi ac--; av++; 207098943Sluigi } /* end while, config masks */ 207198943Sluigiend_mask: 207298943Sluigi break; 207398943Sluigi 207498943Sluigi case TOK_RED: 207598943Sluigi case TOK_GRED: 207698943Sluigi NEED1("red/gred needs w_q/min_th/max_th/max_p\n"); 207798943Sluigi pipe.fs.flags_fs |= DN_IS_RED; 207898943Sluigi if (tok == TOK_GRED) 207998943Sluigi pipe.fs.flags_fs |= DN_IS_GENTLE_RED; 208098943Sluigi /* 208198943Sluigi * the format for parameters is w_q/min_th/max_th/max_p 208298943Sluigi */ 208398943Sluigi if ((end = strsep(&av[0], "/"))) { 208498943Sluigi double w_q = strtod(end, NULL); 208598943Sluigi if (w_q > 1 || w_q <= 0) 208698943Sluigi errx(EX_DATAERR, "0 < w_q <= 1"); 208798943Sluigi pipe.fs.w_q = (int) (w_q * (1 << SCALE_RED)); 208898943Sluigi } 208998943Sluigi if ((end = strsep(&av[0], "/"))) { 209098943Sluigi pipe.fs.min_th = strtoul(end, &end, 0); 209198943Sluigi if (*end == 'K' || *end == 'k') 209298943Sluigi pipe.fs.min_th *= 1024; 209398943Sluigi } 209498943Sluigi if ((end = strsep(&av[0], "/"))) { 209598943Sluigi pipe.fs.max_th = strtoul(end, &end, 0); 209698943Sluigi if (*end == 'K' || *end == 'k') 209798943Sluigi pipe.fs.max_th *= 1024; 209898943Sluigi } 209998943Sluigi if ((end = strsep(&av[0], "/"))) { 210098943Sluigi double max_p = strtod(end, NULL); 210198943Sluigi if (max_p > 1 || max_p <= 0) 210298943Sluigi errx(EX_DATAERR, "0 < max_p <= 1"); 210398943Sluigi pipe.fs.max_p = (int)(max_p * (1 << SCALE_RED)); 210498943Sluigi } 210598943Sluigi ac--; av++; 210698943Sluigi break; 210798943Sluigi 210898943Sluigi case TOK_DROPTAIL: 210998943Sluigi pipe.fs.flags_fs &= ~(DN_IS_RED|DN_IS_GENTLE_RED); 211098943Sluigi break; 211198943Sluigi 211298943Sluigi case TOK_BW: 211398943Sluigi NEED1("bw needs bandwidth or interface\n"); 211498943Sluigi if (do_pipe != 1) 211598943Sluigi errx(EX_DATAERR, "bandwidth only valid for pipes"); 211698943Sluigi /* 211798943Sluigi * set clocking interface or bandwidth value 211898943Sluigi */ 211998943Sluigi if (av[0][0] >= 'a' && av[0][0] <= 'z') { 212098943Sluigi int l = sizeof(pipe.if_name)-1; 212198943Sluigi /* interface name */ 212298943Sluigi strncpy(pipe.if_name, av[0], l); 212398943Sluigi pipe.if_name[l] = '\0'; 212498943Sluigi pipe.bandwidth = 0; 212598943Sluigi } else { 212698943Sluigi pipe.if_name[0] = '\0'; 212798943Sluigi pipe.bandwidth = strtoul(av[0], &end, 0); 212898943Sluigi if (*end == 'K' || *end == 'k') { 212998943Sluigi end++; 213098943Sluigi pipe.bandwidth *= 1000; 213198943Sluigi } else if (*end == 'M') { 213298943Sluigi end++; 213398943Sluigi pipe.bandwidth *= 1000000; 213498943Sluigi } 213598943Sluigi if (*end == 'B' || !strncmp(end, "by", 2)) 213698943Sluigi pipe.bandwidth *= 8; 213798943Sluigi if (pipe.bandwidth < 0) 213898943Sluigi errx(EX_DATAERR, "bandwidth too large"); 213998943Sluigi } 214098943Sluigi ac--; av++; 214198943Sluigi break; 214298943Sluigi 214398943Sluigi case TOK_DELAY: 214498943Sluigi if (do_pipe != 1) 214598943Sluigi errx(EX_DATAERR, "delay only valid for pipes"); 214698943Sluigi NEED1("delay needs argument 0..10000ms\n"); 214798943Sluigi pipe.delay = strtoul(av[0], NULL, 0); 214898943Sluigi ac--; av++; 214998943Sluigi break; 215098943Sluigi 215198943Sluigi case TOK_WEIGHT: 215298943Sluigi if (do_pipe == 1) 215398943Sluigi errx(EX_DATAERR,"weight only valid for queues"); 215498943Sluigi NEED1("weight needs argument 0..100\n"); 215598943Sluigi pipe.fs.weight = strtoul(av[0], &end, 0); 215698943Sluigi ac--; av++; 215798943Sluigi break; 215898943Sluigi 215998943Sluigi case TOK_PIPE: 216098943Sluigi if (do_pipe == 1) 216198943Sluigi errx(EX_DATAERR,"pipe only valid for queues"); 216298943Sluigi NEED1("pipe needs pipe_number\n"); 216398943Sluigi pipe.fs.parent_nr = strtoul(av[0], &end, 0); 216498943Sluigi ac--; av++; 216598943Sluigi break; 216698943Sluigi 216798943Sluigi default: 216898943Sluigi errx(EX_DATAERR, "unrecognised option ``%s''", *av); 216998943Sluigi } 217098943Sluigi } 217198943Sluigi if (do_pipe == 1) { 217298943Sluigi if (pipe.pipe_nr == 0) 217398943Sluigi errx(EX_DATAERR, "pipe_nr must be > 0"); 217498943Sluigi if (pipe.delay > 10000) 217598943Sluigi errx(EX_DATAERR, "delay must be < 10000"); 217698943Sluigi } else { /* do_pipe == 2, queue */ 217798943Sluigi if (pipe.fs.parent_nr == 0) 217898943Sluigi errx(EX_DATAERR, "pipe must be > 0"); 217998943Sluigi if (pipe.fs.weight >100) 218098943Sluigi errx(EX_DATAERR, "weight must be <= 100"); 218198943Sluigi } 218298943Sluigi if (pipe.fs.flags_fs & DN_QSIZE_IS_BYTES) { 218398943Sluigi if (pipe.fs.qsize > 1024*1024) 218498943Sluigi errx(EX_DATAERR, "queue size must be < 1MB"); 218598943Sluigi } else { 218698943Sluigi if (pipe.fs.qsize > 100) 218798943Sluigi errx(EX_DATAERR, "2 <= queue size <= 100"); 218898943Sluigi } 218998943Sluigi if (pipe.fs.flags_fs & DN_IS_RED) { 219098943Sluigi size_t len; 219198943Sluigi int lookup_depth, avg_pkt_size; 219298943Sluigi double s, idle, weight, w_q; 219398943Sluigi struct clockinfo clock; 219498943Sluigi int t; 219598943Sluigi 219698943Sluigi if (pipe.fs.min_th >= pipe.fs.max_th) 219798943Sluigi errx(EX_DATAERR, "min_th %d must be < than max_th %d", 219898943Sluigi pipe.fs.min_th, pipe.fs.max_th); 219998943Sluigi if (pipe.fs.max_th == 0) 220098943Sluigi errx(EX_DATAERR, "max_th must be > 0"); 220198943Sluigi 220298943Sluigi len = sizeof(int); 220398943Sluigi if (sysctlbyname("net.inet.ip.dummynet.red_lookup_depth", 220498943Sluigi &lookup_depth, &len, NULL, 0) == -1) 220598943Sluigi 220698943Sluigi errx(1, "sysctlbyname(\"%s\")", 220798943Sluigi "net.inet.ip.dummynet.red_lookup_depth"); 220898943Sluigi if (lookup_depth == 0) 220998943Sluigi errx(EX_DATAERR, "net.inet.ip.dummynet.red_lookup_depth" 221098943Sluigi " must be greater than zero"); 221198943Sluigi 221298943Sluigi len = sizeof(int); 221398943Sluigi if (sysctlbyname("net.inet.ip.dummynet.red_avg_pkt_size", 221498943Sluigi &avg_pkt_size, &len, NULL, 0) == -1) 221598943Sluigi 221698943Sluigi errx(1, "sysctlbyname(\"%s\")", 221798943Sluigi "net.inet.ip.dummynet.red_avg_pkt_size"); 221898943Sluigi if (avg_pkt_size == 0) 221998943Sluigi errx(EX_DATAERR, 222098943Sluigi "net.inet.ip.dummynet.red_avg_pkt_size must" 222198943Sluigi " be greater than zero"); 222298943Sluigi 222398943Sluigi len = sizeof(struct clockinfo); 222498943Sluigi if (sysctlbyname("kern.clockrate", &clock, &len, NULL, 0) == -1) 222598943Sluigi errx(1, "sysctlbyname(\"%s\")", "kern.clockrate"); 222698943Sluigi 222798943Sluigi /* 222898943Sluigi * Ticks needed for sending a medium-sized packet. 222998943Sluigi * Unfortunately, when we are configuring a WF2Q+ queue, we 223098943Sluigi * do not have bandwidth information, because that is stored 223198943Sluigi * in the parent pipe, and also we have multiple queues 223298943Sluigi * competing for it. So we set s=0, which is not very 223398943Sluigi * correct. But on the other hand, why do we want RED with 223498943Sluigi * WF2Q+ ? 223598943Sluigi */ 223698943Sluigi if (pipe.bandwidth==0) /* this is a WF2Q+ queue */ 223798943Sluigi s = 0; 223898943Sluigi else 223998943Sluigi s = clock.hz * avg_pkt_size * 8 / pipe.bandwidth; 224098943Sluigi 224198943Sluigi /* 224298943Sluigi * max idle time (in ticks) before avg queue size becomes 0. 224398943Sluigi * NOTA: (3/w_q) is approx the value x so that 224498943Sluigi * (1-w_q)^x < 10^-3. 224598943Sluigi */ 224698943Sluigi w_q = ((double)pipe.fs.w_q) / (1 << SCALE_RED); 224798943Sluigi idle = s * 3. / w_q; 224898943Sluigi pipe.fs.lookup_step = (int)idle / lookup_depth; 224998943Sluigi if (!pipe.fs.lookup_step) 225098943Sluigi pipe.fs.lookup_step = 1; 225198943Sluigi weight = 1 - w_q; 225298943Sluigi for (t = pipe.fs.lookup_step; t > 0; --t) 225398943Sluigi weight *= weight; 225498943Sluigi pipe.fs.lookup_weight = (int)(weight * (1 << SCALE_RED)); 225598943Sluigi } 225698943Sluigi i = setsockopt(s, IPPROTO_IP, IP_DUMMYNET_CONFIGURE, &pipe, 225798943Sluigi sizeof pipe); 225898943Sluigi if (i) 225998943Sluigi err(1, "setsockopt(%s)", "IP_DUMMYNET_CONFIGURE"); 226098943Sluigi} 226198943Sluigi 226298943Sluigistatic void 226398943Sluigiget_mac_addr_mask(char *p, u_char *addr, u_char *mask) 226498943Sluigi{ 226598943Sluigi int i, l; 226698943Sluigi 226798943Sluigi for (i=0; i<6; i++) 226898943Sluigi addr[i] = mask[i] = 0; 226998943Sluigi if (!strcmp(p, "any")) 227098943Sluigi return; 227198943Sluigi 227298943Sluigi for (i=0; *p && i<6;i++, p++) { 227398943Sluigi addr[i] = strtol(p, &p, 16); 227498943Sluigi if (*p != ':') /* we start with the mask */ 227598943Sluigi break; 227698943Sluigi } 227798943Sluigi if (*p == '/') { /* mask len */ 227898943Sluigi l = strtol(p+1, &p, 0); 227998943Sluigi for (i=0; l>0; l -=8, i++) 228098943Sluigi mask[i] = (l >=8) ? 0xff : (~0) << (8-l); 228198943Sluigi } else if (*p == '&') { /* mask */ 228298943Sluigi for (i=0, p++; *p && i<6;i++, p++) { 228398943Sluigi mask[i] = strtol(p, &p, 16); 228498943Sluigi if (*p != ':') 228598943Sluigi break; 228698943Sluigi } 228798943Sluigi } else if (*p == '\0') { 228898943Sluigi for (i=0; i<6; i++) 228998943Sluigi mask[i] = 0xff; 229098943Sluigi } 229198943Sluigi for (i=0; i<6; i++) 229298943Sluigi addr[i] &= mask[i]; 229398943Sluigi} 229498943Sluigi 229598943Sluigi/* 229698943Sluigi * helper function, updates the pointer to cmd with the length 229798943Sluigi * of the current command, and also cleans up the first word of 229898943Sluigi * the new command in case it has been clobbered before. 229998943Sluigi */ 230098943Sluigistatic ipfw_insn * 230198943Sluiginext_cmd(ipfw_insn *cmd) 230298943Sluigi{ 230398943Sluigi cmd += F_LEN(cmd); 230498943Sluigi bzero(cmd, sizeof(*cmd)); 230598943Sluigi return cmd; 230698943Sluigi} 230798943Sluigi 230898943Sluigi/* 230998943Sluigi * A function to fill simple commands of size 1. 231098943Sluigi * Existing flags are preserved. 231198943Sluigi */ 231298943Sluigistatic void 231398943Sluigifill_cmd(ipfw_insn *cmd, enum ipfw_opcodes opcode, int flags, u_int16_t arg) 231498943Sluigi{ 231598943Sluigi cmd->opcode = opcode; 231698943Sluigi cmd->len = ((cmd->len | flags) & (F_NOT | F_OR)) | 1; 231798943Sluigi cmd->arg1 = arg; 231898943Sluigi} 231998943Sluigi 232098943Sluigi/* 232198943Sluigi * Fetch and add the MAC address and type, with masks. This generates one or 232298943Sluigi * two microinstructions, and returns the pointer to the last one. 232398943Sluigi */ 232498943Sluigistatic ipfw_insn * 232598943Sluigiadd_mac(ipfw_insn *cmd, int ac, char *av[]) 232698943Sluigi{ 2327102087Sluigi ipfw_insn_mac *mac; 232898943Sluigi 2329102087Sluigi if (ac < 2) 2330102098Sluigi errx(EX_DATAERR, "MAC dst src"); 233198943Sluigi 233298943Sluigi cmd->opcode = O_MACADDR2; 233398943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | F_INSN_SIZE(ipfw_insn_mac); 233498943Sluigi 233598943Sluigi mac = (ipfw_insn_mac *)cmd; 2336101978Sluigi get_mac_addr_mask(av[0], mac->addr, mac->mask); /* dst */ 233798943Sluigi get_mac_addr_mask(av[1], &(mac->addr[6]), &(mac->mask[6])); /* src */ 2338102087Sluigi return cmd; 2339102087Sluigi} 234098943Sluigi 2341102087Sluigistatic ipfw_insn * 2342102087Sluigiadd_mactype(ipfw_insn *cmd, int ac, char *av) 2343102087Sluigi{ 2344102087Sluigi if (ac < 1) 2345102087Sluigi errx(EX_DATAERR, "missing MAC type"); 2346102087Sluigi if (strcmp(av, "any") != 0) { /* we have a non-null type */ 2347102087Sluigi fill_newports((ipfw_insn_u16 *)cmd, av, IPPROTO_ETHERTYPE); 234898943Sluigi cmd->opcode = O_MAC_TYPE; 2349102087Sluigi return cmd; 2350102087Sluigi } else 2351102087Sluigi return NULL; 2352102087Sluigi} 235398943Sluigi 2354102087Sluigistatic ipfw_insn * 2355102087Sluigiadd_proto(ipfw_insn *cmd, char *av) 2356102087Sluigi{ 2357102087Sluigi struct protoent *pe; 2358102087Sluigi u_char proto = 0; 2359102087Sluigi 2360102087Sluigi if (!strncmp(av, "all", strlen(av))) 2361102087Sluigi ; /* same as "ip" */ 2362102087Sluigi else if ((proto = atoi(av)) > 0) 2363102087Sluigi ; /* all done! */ 2364102087Sluigi else if ((pe = getprotobyname(av)) != NULL) 2365102087Sluigi proto = pe->p_proto; 2366102087Sluigi else 2367102098Sluigi return NULL; 2368102087Sluigi if (proto != IPPROTO_IP) 2369102087Sluigi fill_cmd(cmd, O_PROTO, 0, proto); 237098943Sluigi return cmd; 237198943Sluigi} 237298943Sluigi 2373102087Sluigistatic ipfw_insn * 2374102087Sluigiadd_srcip(ipfw_insn *cmd, char *av) 2375102087Sluigi{ 2376102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2377102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2378102087Sluigi cmd->opcode = O_IP_SRC_SET; 2379102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2380102087Sluigi cmd->opcode = O_IP_SRC_ME; 2381102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2382102087Sluigi cmd->opcode = O_IP_SRC; 2383102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_ip)) /* addr/mask */ 2384102087Sluigi cmd->opcode = O_IP_SRC_MASK; 2385102087Sluigi return cmd; 2386102087Sluigi} 2387102087Sluigi 2388102087Sluigistatic ipfw_insn * 2389102087Sluigiadd_dstip(ipfw_insn *cmd, char *av) 2390102087Sluigi{ 2391102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2392102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2393102087Sluigi ; 2394102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2395102087Sluigi cmd->opcode = O_IP_DST_ME; 2396102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2397102087Sluigi cmd->opcode = O_IP_DST; 2398102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_ip)) /* addr/mask */ 2399102087Sluigi cmd->opcode = O_IP_DST_MASK; 2400102087Sluigi return cmd; 2401102087Sluigi} 2402102087Sluigi 2403102087Sluigistatic ipfw_insn * 2404102087Sluigiadd_ports(ipfw_insn *cmd, char *av, u_char proto, int opcode) 2405102087Sluigi{ 2406102087Sluigi if (!strncmp(av, "any", strlen(av))) { 2407102087Sluigi return NULL; 2408102087Sluigi } else if (fill_newports((ipfw_insn_u16 *)cmd, av, proto)) { 2409102087Sluigi /* XXX todo: check that we have a protocol with ports */ 2410102087Sluigi cmd->opcode = opcode; 2411102087Sluigi return cmd; 2412102087Sluigi } 2413102087Sluigi return NULL; 2414102087Sluigi} 2415102087Sluigi 241698943Sluigi/* 241798943Sluigi * Parse arguments and assemble the microinstructions which make up a rule. 241898943Sluigi * Rules are added into the 'rulebuf' and then copied in the correct order 241998943Sluigi * into the actual rule. 242098943Sluigi * 242198943Sluigi * The syntax for a rule starts with the action, followed by an 242298943Sluigi * optional log action, and the various match patterns. 242398943Sluigi * In the assembled microcode, the first opcode must be a O_PROBE_STATE 242498943Sluigi * (generated if the rule includes a keep-state option), then the 242598943Sluigi * various match patterns, the "log" action, and the actual action. 242698943Sluigi * 242798943Sluigi */ 242898943Sluigistatic void 242998943Sluigiadd(int ac, char *av[]) 243098943Sluigi{ 243198943Sluigi /* 243298943Sluigi * rules are added into the 'rulebuf' and then copied in 243398943Sluigi * the correct order into the actual rule. 243498943Sluigi * Some things that need to go out of order (prob, action etc.) 243598943Sluigi * go into actbuf[]. 243698943Sluigi */ 243798943Sluigi static u_int32_t rulebuf[255], actbuf[255], cmdbuf[255]; 243898943Sluigi 243998943Sluigi ipfw_insn *src, *dst, *cmd, *action, *prev; 2440102087Sluigi ipfw_insn *first_cmd; /* first match pattern */ 244198943Sluigi 244298943Sluigi struct ip_fw *rule; 244398943Sluigi 244498943Sluigi /* 244598943Sluigi * various flags used to record that we entered some fields. 244698943Sluigi */ 2447101116Sluigi ipfw_insn *have_state = NULL; /* check-state or keep-state */ 244898943Sluigi 244998943Sluigi int i; 245098943Sluigi 245198943Sluigi int open_par = 0; /* open parenthesis ( */ 245298943Sluigi 245398943Sluigi /* proto is here because it is used to fetch ports */ 245498943Sluigi u_char proto = IPPROTO_IP; /* default protocol */ 245598943Sluigi 245698943Sluigi bzero(actbuf, sizeof(actbuf)); /* actions go here */ 245798943Sluigi bzero(cmdbuf, sizeof(cmdbuf)); 245898943Sluigi bzero(rulebuf, sizeof(rulebuf)); 245998943Sluigi 246098943Sluigi rule = (struct ip_fw *)rulebuf; 246198943Sluigi cmd = (ipfw_insn *)cmdbuf; 246298943Sluigi action = (ipfw_insn *)actbuf; 246398943Sluigi 246498943Sluigi av++; ac--; 246598943Sluigi 246698943Sluigi /* [rule N] -- Rule number optional */ 246798943Sluigi if (ac && isdigit(**av)) { 246898943Sluigi rule->rulenum = atoi(*av); 246998943Sluigi av++; 247098943Sluigi ac--; 247198943Sluigi } 247298943Sluigi 2473101628Sluigi /* [set N] -- set number (0..30), optional */ 2474101628Sluigi if (ac > 1 && !strncmp(*av, "set", strlen(*av))) { 2475101628Sluigi int set = strtoul(av[1], NULL, 10); 2476101628Sluigi if (set < 0 || set > 30) 2477101628Sluigi errx(EX_DATAERR, "illegal set %s", av[1]); 2478101628Sluigi rule->set = set; 2479101628Sluigi av += 2; ac -= 2; 2480101628Sluigi } 2481101628Sluigi 248298943Sluigi /* [prob D] -- match probability, optional */ 248398943Sluigi if (ac > 1 && !strncmp(*av, "prob", strlen(*av))) { 248498943Sluigi double d = strtod(av[1], NULL); 248598943Sluigi 248698943Sluigi if (d <= 0 || d > 1) 248798943Sluigi errx(EX_DATAERR, "illegal match prob. %s", av[1]); 248898943Sluigi if (d != 1) { /* 1 means always match */ 248998943Sluigi action->opcode = O_PROB; 249098943Sluigi action->len = 2; 249198943Sluigi *((int32_t *)(action+1)) = 249298943Sluigi (int32_t)((1 - d) * 0x7fffffff); 249398943Sluigi action += action->len; 249498943Sluigi } 249598943Sluigi av += 2; ac -= 2; 249698943Sluigi } 249798943Sluigi 249898943Sluigi /* action -- mandatory */ 249998943Sluigi NEED1("missing action"); 250098943Sluigi i = match_token(rule_actions, *av); 250198943Sluigi ac--; av++; 250298943Sluigi action->len = 1; /* default */ 250398943Sluigi switch(i) { 250498943Sluigi case TOK_CHECKSTATE: 2505101116Sluigi have_state = action; 250698943Sluigi action->opcode = O_CHECK_STATE; 250798943Sluigi break; 250898943Sluigi 250998943Sluigi case TOK_ACCEPT: 251098943Sluigi action->opcode = O_ACCEPT; 251198943Sluigi break; 251298943Sluigi 251398943Sluigi case TOK_DENY: 251498943Sluigi action->opcode = O_DENY; 251599475Sluigi action->arg1 = 0; 251698943Sluigi break; 251798943Sluigi 251899475Sluigi case TOK_REJECT: 251999475Sluigi action->opcode = O_REJECT; 252099475Sluigi action->arg1 = ICMP_UNREACH_HOST; 252199475Sluigi break; 252299475Sluigi 252399475Sluigi case TOK_RESET: 252499475Sluigi action->opcode = O_REJECT; 252599475Sluigi action->arg1 = ICMP_REJECT_RST; 252699475Sluigi break; 252799475Sluigi 252899475Sluigi case TOK_UNREACH: 252999475Sluigi action->opcode = O_REJECT; 253099475Sluigi NEED1("missing reject code"); 253199475Sluigi fill_reject_code(&action->arg1, *av); 253299475Sluigi ac--; av++; 253399475Sluigi break; 253499475Sluigi 253598943Sluigi case TOK_COUNT: 253698943Sluigi action->opcode = O_COUNT; 253798943Sluigi break; 253898943Sluigi 253998943Sluigi case TOK_QUEUE: 254098943Sluigi case TOK_PIPE: 254198943Sluigi action->len = F_INSN_SIZE(ipfw_insn_pipe); 254298943Sluigi case TOK_SKIPTO: 254398943Sluigi if (i == TOK_QUEUE) 254498943Sluigi action->opcode = O_QUEUE; 254598943Sluigi else if (i == TOK_PIPE) 254698943Sluigi action->opcode = O_PIPE; 254798943Sluigi else if (i == TOK_SKIPTO) 254898943Sluigi action->opcode = O_SKIPTO; 254998943Sluigi NEED1("missing skipto/pipe/queue number"); 255098943Sluigi action->arg1 = strtoul(*av, NULL, 10); 255198943Sluigi av++; ac--; 255298943Sluigi break; 255398943Sluigi 255498943Sluigi case TOK_DIVERT: 255598943Sluigi case TOK_TEE: 255698943Sluigi action->opcode = (i == TOK_DIVERT) ? O_DIVERT : O_TEE; 255798943Sluigi NEED1("missing divert/tee port"); 255898943Sluigi action->arg1 = strtoul(*av, NULL, 0); 255998943Sluigi if (action->arg1 == 0) { 256098943Sluigi struct servent *s; 256198943Sluigi setservent(1); 256298943Sluigi s = getservbyname(av[0], "divert"); 256398943Sluigi if (s != NULL) 256498943Sluigi action->arg1 = ntohs(s->s_port); 256598943Sluigi else 256698943Sluigi errx(EX_DATAERR, "illegal divert/tee port"); 256798943Sluigi } 256898943Sluigi ac--; av++; 256998943Sluigi break; 257098943Sluigi 257198943Sluigi case TOK_FORWARD: { 257298943Sluigi ipfw_insn_sa *p = (ipfw_insn_sa *)action; 257398943Sluigi char *s, *end; 257498943Sluigi 257598943Sluigi NEED1("missing forward address[:port]"); 257698943Sluigi 257798943Sluigi action->opcode = O_FORWARD_IP; 257898943Sluigi action->len = F_INSN_SIZE(ipfw_insn_sa); 257998943Sluigi 258098943Sluigi p->sa.sin_len = sizeof(struct sockaddr_in); 258198943Sluigi p->sa.sin_family = AF_INET; 258298943Sluigi p->sa.sin_port = 0; 258398943Sluigi /* 258498943Sluigi * locate the address-port separator (':' or ',') 258598943Sluigi */ 258698943Sluigi s = strchr(*av, ':'); 258798943Sluigi if (s == NULL) 258898943Sluigi s = strchr(*av, ','); 258998943Sluigi if (s != NULL) { 259098943Sluigi *(s++) = '\0'; 259198943Sluigi i = strtoport(s, &end, 0 /* base */, 0 /* proto */); 259298943Sluigi if (s == end) 259398943Sluigi errx(EX_DATAERR, 259498943Sluigi "illegal forwarding port ``%s''", s); 2595103241Sluigi p->sa.sin_port = (u_short)i; 259698943Sluigi } 259798943Sluigi lookup_host(*av, &(p->sa.sin_addr)); 259898943Sluigi } 259998943Sluigi ac--; av++; 260098943Sluigi break; 260198943Sluigi 260298943Sluigi default: 2603102087Sluigi errx(EX_DATAERR, "invalid action %s\n", av[-1]); 260498943Sluigi } 260598943Sluigi action = next_cmd(action); 260698943Sluigi 260798943Sluigi /* 260898943Sluigi * [log [logamount N]] -- log, optional 260998943Sluigi * 261098943Sluigi * If exists, it goes first in the cmdbuf, but then it is 261198943Sluigi * skipped in the copy section to the end of the buffer. 261298943Sluigi */ 261398943Sluigi if (ac && !strncmp(*av, "log", strlen(*av))) { 261498943Sluigi ipfw_insn_log *c = (ipfw_insn_log *)cmd; 261598943Sluigi 261698943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_log); 261798943Sluigi cmd->opcode = O_LOG; 261898943Sluigi av++; ac--; 261998943Sluigi if (ac && !strncmp(*av, "logamount", strlen(*av))) { 262098943Sluigi ac--; av++; 262198943Sluigi NEED1("logamount requires argument"); 262298943Sluigi c->max_log = atoi(*av); 262398943Sluigi if (c->max_log < 0) 262498943Sluigi errx(EX_DATAERR, "logamount must be positive"); 262598943Sluigi ac--; av++; 262698943Sluigi } 262798943Sluigi cmd = next_cmd(cmd); 262898943Sluigi } 262998943Sluigi 2630101116Sluigi if (have_state) /* must be a check-state, we are done */ 263198943Sluigi goto done; 263298943Sluigi 263398943Sluigi#define OR_START(target) \ 263498943Sluigi if (ac && (*av[0] == '(' || *av[0] == '{')) { \ 263598943Sluigi if (open_par) \ 263698943Sluigi errx(EX_USAGE, "nested \"(\" not allowed\n"); \ 2637101641Sluigi prev = NULL; \ 263898943Sluigi open_par = 1; \ 263998943Sluigi if ( (av[0])[1] == '\0') { \ 264098943Sluigi ac--; av++; \ 264198943Sluigi } else \ 264298943Sluigi (*av)++; \ 264398943Sluigi } \ 264498943Sluigi target: \ 264598943Sluigi 264698943Sluigi 264798943Sluigi#define CLOSE_PAR \ 264898943Sluigi if (open_par) { \ 264998943Sluigi if (ac && ( \ 265098943Sluigi !strncmp(*av, ")", strlen(*av)) || \ 265198943Sluigi !strncmp(*av, "}", strlen(*av)) )) { \ 2652101641Sluigi prev = NULL; \ 265398943Sluigi open_par = 0; \ 265498943Sluigi ac--; av++; \ 265598943Sluigi } else \ 265698943Sluigi errx(EX_USAGE, "missing \")\"\n"); \ 265798943Sluigi } 265898943Sluigi 265998943Sluigi#define NOT_BLOCK \ 266098943Sluigi if (ac && !strncmp(*av, "not", strlen(*av))) { \ 266198943Sluigi if (cmd->len & F_NOT) \ 266298943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); \ 266398943Sluigi cmd->len |= F_NOT; \ 266498943Sluigi ac--; av++; \ 266598943Sluigi } 266698943Sluigi 266798943Sluigi#define OR_BLOCK(target) \ 266898943Sluigi if (ac && !strncmp(*av, "or", strlen(*av))) { \ 266998943Sluigi if (prev == NULL || open_par == 0) \ 267098943Sluigi errx(EX_DATAERR, "invalid OR block"); \ 267198943Sluigi prev->len |= F_OR; \ 267298943Sluigi ac--; av++; \ 267398943Sluigi goto target; \ 267498943Sluigi } \ 267598943Sluigi CLOSE_PAR; 267698943Sluigi 2677102087Sluigi first_cmd = cmd; 2678102098Sluigi 2679102098Sluigi#if 0 268098943Sluigi /* 2681102087Sluigi * MAC addresses, optional. 2682102087Sluigi * If we have this, we skip the part "proto from src to dst" 2683102087Sluigi * and jump straight to the option parsing. 2684102087Sluigi */ 2685102087Sluigi NOT_BLOCK; 2686102087Sluigi NEED1("missing protocol"); 2687102087Sluigi if (!strncmp(*av, "MAC", strlen(*av)) || 2688102087Sluigi !strncmp(*av, "mac", strlen(*av))) { 2689102087Sluigi ac--; av++; /* the "MAC" keyword */ 2690102087Sluigi add_mac(cmd, ac, av); /* exits in case of errors */ 2691102087Sluigi cmd = next_cmd(cmd); 2692102087Sluigi ac -= 2; av += 2; /* dst-mac and src-mac */ 2693102087Sluigi NOT_BLOCK; 2694102087Sluigi NEED1("missing mac type"); 2695102087Sluigi if (add_mactype(cmd, ac, av[0])) 2696102087Sluigi cmd = next_cmd(cmd); 2697102087Sluigi ac--; av++; /* any or mac-type */ 2698102087Sluigi goto read_options; 2699102087Sluigi } 2700102098Sluigi#endif 2701102087Sluigi 2702102087Sluigi /* 270398943Sluigi * protocol, mandatory 270498943Sluigi */ 270598943Sluigi OR_START(get_proto); 270698943Sluigi NOT_BLOCK; 270798943Sluigi NEED1("missing protocol"); 2708102087Sluigi if (add_proto(cmd, *av)) { 2709102087Sluigi av++; ac--; 2710102087Sluigi if (F_LEN(cmd) == 0) /* plain IP */ 2711102087Sluigi proto = 0; 2712102087Sluigi else { 2713102087Sluigi proto = cmd->arg1; 2714102087Sluigi prev = cmd; 2715102087Sluigi cmd = next_cmd(cmd); 2716102087Sluigi } 2717102098Sluigi } else if (first_cmd != cmd) { 2718102098Sluigi errx(EX_DATAERR, "invalid protocol ``%s''", av); 2719102098Sluigi } else 2720102098Sluigi goto read_options; 272198943Sluigi OR_BLOCK(get_proto); 272298943Sluigi 272398943Sluigi /* 2724102087Sluigi * "from", mandatory 272598943Sluigi */ 2726102087Sluigi if (!ac || strncmp(*av, "from", strlen(*av))) 272798943Sluigi errx(EX_USAGE, "missing ``from''"); 272898943Sluigi ac--; av++; 272998943Sluigi 273098943Sluigi /* 273198943Sluigi * source IP, mandatory 273298943Sluigi */ 273398943Sluigi OR_START(source_ip); 273498943Sluigi NOT_BLOCK; /* optional "not" */ 273598943Sluigi NEED1("missing source address"); 2736102087Sluigi if (add_srcip(cmd, *av)) { 2737102087Sluigi ac--; av++; 2738102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 2739102087Sluigi prev = cmd; 2740102087Sluigi cmd = next_cmd(cmd); 2741102087Sluigi } 2742102087Sluigi } 274398943Sluigi OR_BLOCK(source_ip); 274498943Sluigi 274598943Sluigi /* 274698943Sluigi * source ports, optional 274798943Sluigi */ 274898943Sluigi NOT_BLOCK; /* optional "not" */ 2749101641Sluigi if (ac) { 2750102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 2751102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 2752102087Sluigi ac--; av++; 2753102087Sluigi if (F_LEN(cmd) != 0) 2754102087Sluigi cmd = next_cmd(cmd); 2755101641Sluigi } 275698943Sluigi } 275798943Sluigi 275898943Sluigi /* 2759102087Sluigi * "to", mandatory 276098943Sluigi */ 2761102087Sluigi if (!ac || strncmp(*av, "to", strlen(*av))) 276298943Sluigi errx(EX_USAGE, "missing ``to''"); 276398943Sluigi av++; ac--; 276498943Sluigi 276598943Sluigi /* 276698943Sluigi * destination, mandatory 276798943Sluigi */ 276898943Sluigi OR_START(dest_ip); 276998943Sluigi NOT_BLOCK; /* optional "not" */ 277098943Sluigi NEED1("missing dst address"); 2771102087Sluigi if (add_dstip(cmd, *av)) { 2772102087Sluigi ac--; av++; 2773102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 2774102087Sluigi prev = cmd; 2775102087Sluigi cmd = next_cmd(cmd); 2776102087Sluigi } 2777102087Sluigi } 277898943Sluigi OR_BLOCK(dest_ip); 277998943Sluigi 278098943Sluigi /* 278198943Sluigi * dest. ports, optional 278298943Sluigi */ 278398943Sluigi NOT_BLOCK; /* optional "not" */ 2784101641Sluigi if (ac) { 2785102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 2786102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 2787102087Sluigi ac--; av++; 2788102087Sluigi if (F_LEN(cmd) != 0) 2789102087Sluigi cmd = next_cmd(cmd); 2790101641Sluigi } 279198943Sluigi } 279298943Sluigi 279398943Sluigiread_options: 2794102087Sluigi if (ac && first_cmd == cmd) { 2795102087Sluigi /* 2796102087Sluigi * nothing specified so far, store in the rule to ease 2797102087Sluigi * printout later. 2798102087Sluigi */ 2799102087Sluigi rule->_pad = 1; 2800102087Sluigi } 280198943Sluigi prev = NULL; 280298943Sluigi while (ac) { 2803101641Sluigi char *s; 2804101641Sluigi ipfw_insn_u32 *cmd32; /* alias for cmd */ 280598943Sluigi 2806101641Sluigi s = *av; 2807101641Sluigi cmd32 = (ipfw_insn_u32 *)cmd; 2808101641Sluigi 280998943Sluigi if (*s == '!') { /* alternate syntax for NOT */ 281098943Sluigi if (cmd->len & F_NOT) 281198943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 281298943Sluigi cmd->len = F_NOT; 281398943Sluigi s++; 281498943Sluigi } 281598943Sluigi i = match_token(rule_options, s); 281698943Sluigi ac--; av++; 281798943Sluigi switch(i) { 281898943Sluigi case TOK_NOT: 281998943Sluigi if (cmd->len & F_NOT) 282098943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 282198943Sluigi cmd->len = F_NOT; 282298943Sluigi break; 282398943Sluigi 282498943Sluigi case TOK_OR: 2825101641Sluigi if (open_par == 0 || prev == NULL) 282698943Sluigi errx(EX_USAGE, "invalid \"or\" block\n"); 282798943Sluigi prev->len |= F_OR; 282898943Sluigi break; 2829101641Sluigi 2830101641Sluigi case TOK_STARTBRACE: 2831101641Sluigi if (open_par) 2832101641Sluigi errx(EX_USAGE, "+nested \"(\" not allowed\n"); 2833101641Sluigi open_par = 1; 2834101641Sluigi break; 2835101641Sluigi 2836101641Sluigi case TOK_ENDBRACE: 2837101641Sluigi if (!open_par) 2838101641Sluigi errx(EX_USAGE, "+missing \")\"\n"); 2839101641Sluigi open_par = 0; 2840102087Sluigi prev = NULL; 2841101641Sluigi break; 2842101641Sluigi 284398943Sluigi case TOK_IN: 284498943Sluigi fill_cmd(cmd, O_IN, 0, 0); 284598943Sluigi break; 284698943Sluigi 284798943Sluigi case TOK_OUT: 284898943Sluigi cmd->len ^= F_NOT; /* toggle F_NOT */ 284998943Sluigi fill_cmd(cmd, O_IN, 0, 0); 285098943Sluigi break; 285198943Sluigi 285298943Sluigi case TOK_FRAG: 285398943Sluigi fill_cmd(cmd, O_FRAG, 0, 0); 285498943Sluigi break; 285598943Sluigi 285698943Sluigi case TOK_LAYER2: 285798943Sluigi fill_cmd(cmd, O_LAYER2, 0, 0); 285898943Sluigi break; 285998943Sluigi 286098943Sluigi case TOK_XMIT: 286198943Sluigi case TOK_RECV: 286298943Sluigi case TOK_VIA: 286398943Sluigi NEED1("recv, xmit, via require interface name" 286498943Sluigi " or address"); 286598943Sluigi fill_iface((ipfw_insn_if *)cmd, av[0]); 286698943Sluigi ac--; av++; 286798943Sluigi if (F_LEN(cmd) == 0) /* not a valid address */ 286898943Sluigi break; 286998943Sluigi if (i == TOK_XMIT) 287098943Sluigi cmd->opcode = O_XMIT; 287198943Sluigi else if (i == TOK_RECV) 287298943Sluigi cmd->opcode = O_RECV; 287398943Sluigi else if (i == TOK_VIA) 287498943Sluigi cmd->opcode = O_VIA; 287598943Sluigi break; 287698943Sluigi 287799475Sluigi case TOK_ICMPTYPES: 287899475Sluigi NEED1("icmptypes requires list of types"); 287999475Sluigi fill_icmptypes((ipfw_insn_u32 *)cmd, *av); 288099475Sluigi av++; ac--; 288199475Sluigi break; 288299475Sluigi 288398943Sluigi case TOK_IPTTL: 288498943Sluigi NEED1("ipttl requires TTL"); 288598943Sluigi fill_cmd(cmd, O_IPTTL, 0, strtoul(*av, NULL, 0)); 288698943Sluigi ac--; av++; 288798943Sluigi break; 288898943Sluigi 288998943Sluigi case TOK_IPID: 289098943Sluigi NEED1("ipid requires length"); 289198943Sluigi fill_cmd(cmd, O_IPID, 0, strtoul(*av, NULL, 0)); 289298943Sluigi ac--; av++; 289398943Sluigi break; 289498943Sluigi 289598943Sluigi case TOK_IPLEN: 289698943Sluigi NEED1("iplen requires length"); 289798943Sluigi fill_cmd(cmd, O_IPLEN, 0, strtoul(*av, NULL, 0)); 289898943Sluigi ac--; av++; 289998943Sluigi break; 290098943Sluigi 290198943Sluigi case TOK_IPVER: 290298943Sluigi NEED1("ipver requires version"); 290398943Sluigi fill_cmd(cmd, O_IPVER, 0, strtoul(*av, NULL, 0)); 290498943Sluigi ac--; av++; 290598943Sluigi break; 290698943Sluigi 290799475Sluigi case TOK_IPPRECEDENCE: 290899475Sluigi NEED1("ipprecedence requires value"); 290999475Sluigi fill_cmd(cmd, O_IPPRECEDENCE, 0, 291099475Sluigi (strtoul(*av, NULL, 0) & 7) << 5); 291199475Sluigi ac--; av++; 291299475Sluigi break; 291399475Sluigi 291498943Sluigi case TOK_IPOPTS: 291598943Sluigi NEED1("missing argument for ipoptions"); 2916101116Sluigi fill_flags(cmd, O_IPOPT, f_ipopts, *av); 291798943Sluigi ac--; av++; 291898943Sluigi break; 291998943Sluigi 292099475Sluigi case TOK_IPTOS: 292199475Sluigi NEED1("missing argument for iptos"); 2922101116Sluigi fill_flags(cmd, O_IPTOS, f_iptos, *av); 292399475Sluigi ac--; av++; 292499475Sluigi break; 292599475Sluigi 292698943Sluigi case TOK_UID: 292798943Sluigi NEED1("uid requires argument"); 292898943Sluigi { 292998943Sluigi char *end; 293098943Sluigi uid_t uid; 293198943Sluigi struct passwd *pwd; 293298943Sluigi 293398943Sluigi cmd->opcode = O_UID; 293498943Sluigi uid = strtoul(*av, &end, 0); 293598943Sluigi pwd = (*end == '\0') ? getpwuid(uid) : getpwnam(*av); 293698943Sluigi if (pwd == NULL) 293798943Sluigi errx(EX_DATAERR, "uid \"%s\" nonexistent", *av); 2938106504Smaxim cmd32->d[0] = pwd->pw_uid; 293998943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 294098943Sluigi ac--; av++; 294198943Sluigi } 294298943Sluigi break; 294398943Sluigi 294498943Sluigi case TOK_GID: 294598943Sluigi NEED1("gid requires argument"); 294698943Sluigi { 294798943Sluigi char *end; 294898943Sluigi gid_t gid; 294998943Sluigi struct group *grp; 295098943Sluigi 295198943Sluigi cmd->opcode = O_GID; 295298943Sluigi gid = strtoul(*av, &end, 0); 295398943Sluigi grp = (*end == '\0') ? getgrgid(gid) : getgrnam(*av); 295498943Sluigi if (grp == NULL) 295598943Sluigi errx(EX_DATAERR, "gid \"%s\" nonexistent", *av); 295698943Sluigi 2957106504Smaxim cmd32->d[0] = grp->gr_gid; 295898943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 295998943Sluigi ac--; av++; 296098943Sluigi } 296198943Sluigi break; 296298943Sluigi 296398943Sluigi case TOK_ESTAB: 296498943Sluigi fill_cmd(cmd, O_ESTAB, 0, 0); 296598943Sluigi break; 296698943Sluigi 296798943Sluigi case TOK_SETUP: 296898943Sluigi fill_cmd(cmd, O_TCPFLAGS, 0, 296998943Sluigi (TH_SYN) | ( (TH_ACK) & 0xff) <<8 ); 297098943Sluigi break; 297198943Sluigi 297298943Sluigi case TOK_TCPOPTS: 297398943Sluigi NEED1("missing argument for tcpoptions"); 297498943Sluigi fill_flags(cmd, O_TCPOPTS, f_tcpopts, *av); 297598943Sluigi ac--; av++; 297698943Sluigi break; 297798943Sluigi 297898943Sluigi case TOK_TCPSEQ: 297998943Sluigi case TOK_TCPACK: 298098943Sluigi NEED1("tcpseq/tcpack requires argument"); 298198943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 298298943Sluigi cmd->opcode = (i == TOK_TCPSEQ) ? O_TCPSEQ : O_TCPACK; 298398943Sluigi cmd32->d[0] = htonl(strtoul(*av, NULL, 0)); 298498943Sluigi ac--; av++; 298598943Sluigi break; 298698943Sluigi 298798943Sluigi case TOK_TCPWIN: 298898943Sluigi NEED1("tcpwin requires length"); 298998943Sluigi fill_cmd(cmd, O_TCPWIN, 0, 299098943Sluigi htons(strtoul(*av, NULL, 0))); 299198943Sluigi ac--; av++; 299298943Sluigi break; 299398943Sluigi 299498943Sluigi case TOK_TCPFLAGS: 299598943Sluigi NEED1("missing argument for tcpflags"); 299698943Sluigi cmd->opcode = O_TCPFLAGS; 299798943Sluigi fill_flags(cmd, O_TCPFLAGS, f_tcpflags, *av); 299898943Sluigi ac--; av++; 299998943Sluigi break; 300098943Sluigi 300198943Sluigi case TOK_KEEPSTATE: 3002101641Sluigi if (open_par) 3003101641Sluigi errx(EX_USAGE, "keep-state cannot be part " 3004101641Sluigi "of an or block"); 300599909Sluigi if (have_state) 3006101116Sluigi errx(EX_USAGE, "only one of keep-state " 300799909Sluigi "and limit is allowed"); 3008101116Sluigi have_state = cmd; 300998943Sluigi fill_cmd(cmd, O_KEEP_STATE, 0, 0); 301098943Sluigi break; 301198943Sluigi 301298943Sluigi case TOK_LIMIT: 3013101641Sluigi if (open_par) 3014101641Sluigi errx(EX_USAGE, "limit cannot be part " 3015101641Sluigi "of an or block"); 301699909Sluigi if (have_state) 3017101116Sluigi errx(EX_USAGE, "only one of keep-state " 301899909Sluigi "and limit is allowed"); 3019101641Sluigi NEED1("limit needs mask and # of connections"); 3020101116Sluigi have_state = cmd; 302198943Sluigi { 302298943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 302398943Sluigi 302498943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_limit); 302598943Sluigi cmd->opcode = O_LIMIT; 302698943Sluigi c->limit_mask = 0; 302798943Sluigi c->conn_limit = 0; 302898943Sluigi for (; ac >1 ;) { 302998943Sluigi int val; 303098943Sluigi 303198943Sluigi val = match_token(limit_masks, *av); 303298943Sluigi if (val <= 0) 303398943Sluigi break; 303498943Sluigi c->limit_mask |= val; 303598943Sluigi ac--; av++; 303698943Sluigi } 303798943Sluigi c->conn_limit = atoi(*av); 303898943Sluigi if (c->conn_limit == 0) 303998943Sluigi errx(EX_USAGE, "limit: limit must be >0"); 304098943Sluigi if (c->limit_mask == 0) 304198943Sluigi errx(EX_USAGE, "missing limit mask"); 304298943Sluigi ac--; av++; 304398943Sluigi } 304498943Sluigi break; 304598943Sluigi 3046102087Sluigi case TOK_PROTO: 3047102087Sluigi NEED1("missing protocol"); 3048102087Sluigi if (add_proto(cmd, *av)) { 3049102087Sluigi proto = cmd->arg1; 3050102087Sluigi ac--; av++; 3051102098Sluigi } else 3052102098Sluigi errx(EX_DATAERR, "invalid protocol ``%s''", av); 3053102087Sluigi break; 3054102087Sluigi 3055102087Sluigi case TOK_SRCIP: 3056102087Sluigi NEED1("missing source IP"); 3057102087Sluigi if (add_srcip(cmd, *av)) { 3058102087Sluigi ac--; av++; 3059102087Sluigi } 3060102087Sluigi break; 3061102087Sluigi 3062102087Sluigi case TOK_DSTIP: 3063102087Sluigi NEED1("missing destination IP"); 3064102087Sluigi if (add_dstip(cmd, *av)) { 3065102087Sluigi ac--; av++; 3066102087Sluigi } 3067102087Sluigi break; 3068102087Sluigi 3069102087Sluigi case TOK_SRCPORT: 3070102087Sluigi NEED1("missing source port"); 3071102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 3072102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 3073102087Sluigi ac--; av++; 3074102087Sluigi } else 3075102087Sluigi errx(EX_DATAERR, "invalid source port %s", *av); 3076102087Sluigi break; 3077102087Sluigi 3078102087Sluigi case TOK_DSTPORT: 3079102087Sluigi NEED1("missing destination port"); 3080102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 3081102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 3082102087Sluigi ac--; av++; 3083102087Sluigi } else 3084102087Sluigi errx(EX_DATAERR, "invalid destination port %s", 3085102087Sluigi *av); 3086102087Sluigi break; 3087102087Sluigi 3088102087Sluigi case TOK_MAC: 3089102087Sluigi if (ac < 2) 3090102087Sluigi errx(EX_USAGE, "MAC dst-mac src-mac"); 3091102087Sluigi if (add_mac(cmd, ac, av)) { 3092102087Sluigi ac -= 2; av += 2; 3093102087Sluigi } 3094102087Sluigi break; 3095102087Sluigi 3096102087Sluigi case TOK_MACTYPE: 3097102087Sluigi NEED1("missing mac type"); 3098102087Sluigi if (!add_mactype(cmd, ac, *av)) 3099102087Sluigi errx(EX_DATAERR, "invalid mac type %s", av); 3100102087Sluigi ac--; av++; 3101102087Sluigi break; 3102102087Sluigi 310398943Sluigi default: 310498943Sluigi errx(EX_USAGE, "unrecognised option [%d] %s\n", i, s); 310598943Sluigi } 310698943Sluigi if (F_LEN(cmd) > 0) { /* prepare to advance */ 310798943Sluigi prev = cmd; 310898943Sluigi cmd = next_cmd(cmd); 310998943Sluigi } 311098943Sluigi } 311198943Sluigi 311298943Sluigidone: 311398943Sluigi /* 311498943Sluigi * Now copy stuff into the rule. 311598943Sluigi * If we have a keep-state option, the first instruction 311698943Sluigi * must be a PROBE_STATE (which is generated here). 311798943Sluigi * If we have a LOG option, it was stored as the first command, 311898943Sluigi * and now must be moved to the top of the action part. 311998943Sluigi */ 312098943Sluigi dst = (ipfw_insn *)rule->cmd; 312198943Sluigi 312298943Sluigi /* 312398943Sluigi * generate O_PROBE_STATE if necessary 312498943Sluigi */ 3125101116Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 312698943Sluigi fill_cmd(dst, O_PROBE_STATE, 0, 0); 312798943Sluigi dst = next_cmd(dst); 312898943Sluigi } 312998943Sluigi /* 3130101116Sluigi * copy all commands but O_LOG, O_KEEP_STATE, O_LIMIT 313198943Sluigi */ 313298943Sluigi for (src = (ipfw_insn *)cmdbuf; src != cmd; src += i) { 313398943Sluigi i = F_LEN(src); 313498943Sluigi 3135101116Sluigi switch (src->opcode) { 3136101116Sluigi case O_LOG: 3137101116Sluigi case O_KEEP_STATE: 3138101116Sluigi case O_LIMIT: 3139101116Sluigi break; 3140101116Sluigi default: 314198943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 314298943Sluigi dst += i; 314398943Sluigi } 314498943Sluigi } 314598943Sluigi 314698943Sluigi /* 3147101116Sluigi * put back the have_state command as last opcode 3148101116Sluigi */ 3149101295Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 3150101116Sluigi i = F_LEN(have_state); 3151101116Sluigi bcopy(have_state, dst, i * sizeof(u_int32_t)); 3152101116Sluigi dst += i; 3153101116Sluigi } 3154101116Sluigi /* 315598943Sluigi * start action section 315698943Sluigi */ 315798943Sluigi rule->act_ofs = dst - rule->cmd; 315898943Sluigi 315998943Sluigi /* 316098943Sluigi * put back O_LOG if necessary 316198943Sluigi */ 316298943Sluigi src = (ipfw_insn *)cmdbuf; 316398943Sluigi if ( src->opcode == O_LOG ) { 316498943Sluigi i = F_LEN(src); 316598943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 316698943Sluigi dst += i; 316798943Sluigi } 316898943Sluigi /* 316998943Sluigi * copy all other actions 317098943Sluigi */ 317198943Sluigi for (src = (ipfw_insn *)actbuf; src != action; src += i) { 317298943Sluigi i = F_LEN(src); 317398943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 317498943Sluigi dst += i; 317598943Sluigi } 317698943Sluigi 317798943Sluigi rule->cmd_len = (u_int32_t *)dst - (u_int32_t *)(rule->cmd); 317898943Sluigi i = (void *)dst - (void *)rule; 317998943Sluigi if (getsockopt(s, IPPROTO_IP, IP_FW_ADD, rule, &i) == -1) 318098943Sluigi err(EX_UNAVAILABLE, "getsockopt(%s)", "IP_FW_ADD"); 318198943Sluigi if (!do_quiet) 318298943Sluigi show_ipfw(rule); 318398943Sluigi} 318498943Sluigi 318598943Sluigistatic void 3186101978Sluigizero(int ac, char *av[]) 318798943Sluigi{ 318898943Sluigi int rulenum; 318998943Sluigi int failed = EX_OK; 319098943Sluigi 319198943Sluigi av++; ac--; 319298943Sluigi 319398943Sluigi if (!ac) { 319498943Sluigi /* clear all entries */ 319598943Sluigi if (setsockopt(s, IPPROTO_IP, IP_FW_ZERO, NULL, 0) < 0) 319698943Sluigi err(EX_UNAVAILABLE, "setsockopt(%s)", "IP_FW_ZERO"); 319798943Sluigi if (!do_quiet) 319898943Sluigi printf("Accounting cleared.\n"); 319998943Sluigi 320098943Sluigi return; 320198943Sluigi } 320298943Sluigi 320398943Sluigi while (ac) { 320498943Sluigi /* Rule number */ 320598943Sluigi if (isdigit(**av)) { 320698943Sluigi rulenum = atoi(*av); 320798943Sluigi av++; 320898943Sluigi ac--; 320998943Sluigi if (setsockopt(s, IPPROTO_IP, 321098943Sluigi IP_FW_ZERO, &rulenum, sizeof rulenum)) { 321198943Sluigi warn("rule %u: setsockopt(IP_FW_ZERO)", 321298943Sluigi rulenum); 321398943Sluigi failed = EX_UNAVAILABLE; 321498943Sluigi } else if (!do_quiet) 321598943Sluigi printf("Entry %d cleared\n", rulenum); 321698943Sluigi } else { 321798943Sluigi errx(EX_USAGE, "invalid rule number ``%s''", *av); 321898943Sluigi } 321998943Sluigi } 322098943Sluigi if (failed != EX_OK) 322198943Sluigi exit(failed); 322298943Sluigi} 322398943Sluigi 322498943Sluigistatic void 3225101978Sluigiresetlog(int ac, char *av[]) 322698943Sluigi{ 322798943Sluigi int rulenum; 322898943Sluigi int failed = EX_OK; 322998943Sluigi 323098943Sluigi av++; ac--; 323198943Sluigi 323298943Sluigi if (!ac) { 323398943Sluigi /* clear all entries */ 323498943Sluigi if (setsockopt(s, IPPROTO_IP, IP_FW_RESETLOG, NULL, 0) < 0) 323598943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_FW_RESETLOG)"); 323698943Sluigi if (!do_quiet) 323798943Sluigi printf("Logging counts reset.\n"); 323898943Sluigi 323998943Sluigi return; 324098943Sluigi } 324198943Sluigi 324298943Sluigi while (ac) { 324398943Sluigi /* Rule number */ 324498943Sluigi if (isdigit(**av)) { 324598943Sluigi rulenum = atoi(*av); 324698943Sluigi av++; 324798943Sluigi ac--; 324898943Sluigi if (setsockopt(s, IPPROTO_IP, 324998943Sluigi IP_FW_RESETLOG, &rulenum, sizeof rulenum)) { 325098943Sluigi warn("rule %u: setsockopt(IP_FW_RESETLOG)", 325198943Sluigi rulenum); 325298943Sluigi failed = EX_UNAVAILABLE; 325398943Sluigi } else if (!do_quiet) 325498943Sluigi printf("Entry %d logging count reset\n", 325598943Sluigi rulenum); 325698943Sluigi } else { 325798943Sluigi errx(EX_DATAERR, "invalid rule number ``%s''", *av); 325898943Sluigi } 325998943Sluigi } 326098943Sluigi if (failed != EX_OK) 326198943Sluigi exit(failed); 326298943Sluigi} 326398943Sluigi 326498943Sluigistatic void 326598943Sluigiflush() 326698943Sluigi{ 326798943Sluigi int cmd = do_pipe ? IP_DUMMYNET_FLUSH : IP_FW_FLUSH; 326898943Sluigi 326998943Sluigi if (!do_force && !do_quiet) { /* need to ask user */ 327098943Sluigi int c; 327198943Sluigi 327298943Sluigi printf("Are you sure? [yn] "); 327398943Sluigi fflush(stdout); 327498943Sluigi do { 327598943Sluigi c = toupper(getc(stdin)); 327698943Sluigi while (c != '\n' && getc(stdin) != '\n') 327798943Sluigi if (feof(stdin)) 327898943Sluigi return; /* and do not flush */ 327998943Sluigi } while (c != 'Y' && c != 'N'); 328098943Sluigi printf("\n"); 328198943Sluigi if (c == 'N') /* user said no */ 328298943Sluigi return; 328398943Sluigi } 328498943Sluigi if (setsockopt(s, IPPROTO_IP, cmd, NULL, 0) < 0) 328598943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_%s_FLUSH)", 328698943Sluigi do_pipe ? "DUMMYNET" : "FW"); 328798943Sluigi if (!do_quiet) 328898943Sluigi printf("Flushed all %s.\n", do_pipe ? "pipes" : "rules"); 328998943Sluigi} 329098943Sluigi 329198943Sluigistatic int 329298943Sluigiipfw_main(int ac, char **av) 329398943Sluigi{ 329498943Sluigi int ch; 329598943Sluigi 329698943Sluigi if (ac == 1) 329798943Sluigi show_usage(); 329898943Sluigi 329998943Sluigi /* Set the force flag for non-interactive processes */ 330098943Sluigi do_force = !isatty(STDIN_FILENO); 330198943Sluigi 330298943Sluigi optind = optreset = 1; 3303102098Sluigi while ((ch = getopt(ac, av, "hs:acdefNqStv")) != -1) 330498943Sluigi switch (ch) { 330598943Sluigi case 'h': /* help */ 330698943Sluigi help(); 330798943Sluigi break; /* NOTREACHED */ 330898943Sluigi 330998943Sluigi case 's': /* sort */ 331098943Sluigi do_sort = atoi(optarg); 331198943Sluigi break; 331298943Sluigi case 'a': 331398943Sluigi do_acct = 1; 331498943Sluigi break; 3315102098Sluigi case 'c': 3316102098Sluigi do_compact = 1; 3317102098Sluigi break; 331898943Sluigi case 'd': 331998943Sluigi do_dynamic = 1; 332098943Sluigi break; 332198943Sluigi case 'e': 332298943Sluigi do_expired = 1; 332398943Sluigi break; 332498943Sluigi case 'f': 332598943Sluigi do_force = 1; 332698943Sluigi break; 332798943Sluigi case 'N': 332898943Sluigi do_resolv = 1; 332998943Sluigi break; 333098943Sluigi case 'q': 333198943Sluigi do_quiet = 1; 333298943Sluigi break; 3333101628Sluigi case 'S': 3334101628Sluigi show_sets = 1; 3335101628Sluigi break; 333698943Sluigi case 't': 333798943Sluigi do_time = 1; 333898943Sluigi break; 333998943Sluigi case 'v': /* verbose */ 334098943Sluigi verbose++; 334198943Sluigi break; 334298943Sluigi default: 334398943Sluigi show_usage(); 334498943Sluigi } 334598943Sluigi 334698943Sluigi ac -= optind; 334798943Sluigi av += optind; 334898943Sluigi NEED1("bad arguments, for usage summary ``ipfw''"); 334998943Sluigi 335098943Sluigi /* 335198943Sluigi * optional: pipe or queue 335298943Sluigi */ 335398943Sluigi if (!strncmp(*av, "pipe", strlen(*av))) { 335498943Sluigi do_pipe = 1; 335598943Sluigi ac--; 335698943Sluigi av++; 335798943Sluigi } else if (!strncmp(*av, "queue", strlen(*av))) { 335898943Sluigi do_pipe = 2; 335998943Sluigi ac--; 336098943Sluigi av++; 336198943Sluigi } 336298943Sluigi NEED1("missing command"); 336398943Sluigi 336498943Sluigi /* 336598943Sluigi * for pipes and queues we normally say 'pipe NN config' 336698943Sluigi * but the code is easier to parse as 'pipe config NN' 336798943Sluigi * so we swap the two arguments. 336898943Sluigi */ 336998943Sluigi if (do_pipe > 0 && ac > 1 && *av[0] >= '0' && *av[0] <= '9') { 337098943Sluigi char *p = av[0]; 337198943Sluigi av[0] = av[1]; 337298943Sluigi av[1] = p; 337398943Sluigi } 337498943Sluigi if (!strncmp(*av, "add", strlen(*av))) 337598943Sluigi add(ac, av); 337698943Sluigi else if (do_pipe && !strncmp(*av, "config", strlen(*av))) 337798943Sluigi config_pipe(ac, av); 3378101978Sluigi else if (!strncmp(*av, "delete", strlen(*av))) 337998943Sluigi delete(ac, av); 338098943Sluigi else if (!strncmp(*av, "flush", strlen(*av))) 338198943Sluigi flush(); 338298943Sluigi else if (!strncmp(*av, "zero", strlen(*av))) 338398943Sluigi zero(ac, av); 338498943Sluigi else if (!strncmp(*av, "resetlog", strlen(*av))) 338598943Sluigi resetlog(ac, av); 338698943Sluigi else if (!strncmp(*av, "print", strlen(*av)) || 338798943Sluigi !strncmp(*av, "list", strlen(*av))) 338898943Sluigi list(ac, av); 3389101978Sluigi else if (!strncmp(*av, "set", strlen(*av))) 3390101978Sluigi sets_handler(ac, av); 339198943Sluigi else if (!strncmp(*av, "show", strlen(*av))) { 339298943Sluigi do_acct++; 339398943Sluigi list(ac, av); 339498943Sluigi } else 339598943Sluigi errx(EX_USAGE, "bad command `%s'", *av); 339698943Sluigi return 0; 339798943Sluigi} 339898943Sluigi 339998943Sluigi 340098943Sluigistatic void 340198943Sluigiipfw_readfile(int ac, char *av[]) 340298943Sluigi{ 340398943Sluigi#define MAX_ARGS 32 340498943Sluigi#define WHITESP " \t\f\v\n\r" 340598943Sluigi char buf[BUFSIZ]; 340698943Sluigi char *a, *p, *args[MAX_ARGS], *cmd = NULL; 340798943Sluigi char linename[10]; 340898943Sluigi int i=0, lineno=0, qflag=0, pflag=0, status; 340998943Sluigi FILE *f = NULL; 341098943Sluigi pid_t preproc = 0; 341198943Sluigi int c; 341298943Sluigi 341398943Sluigi while ((c = getopt(ac, av, "D:U:p:q")) != -1) 341498943Sluigi switch(c) { 341598943Sluigi case 'D': 341698943Sluigi if (!pflag) 341798943Sluigi errx(EX_USAGE, "-D requires -p"); 341898943Sluigi if (i > MAX_ARGS - 2) 341998943Sluigi errx(EX_USAGE, 342098943Sluigi "too many -D or -U options"); 342198943Sluigi args[i++] = "-D"; 342298943Sluigi args[i++] = optarg; 342398943Sluigi break; 342498943Sluigi 342598943Sluigi case 'U': 342698943Sluigi if (!pflag) 342798943Sluigi errx(EX_USAGE, "-U requires -p"); 342898943Sluigi if (i > MAX_ARGS - 2) 342998943Sluigi errx(EX_USAGE, 343098943Sluigi "too many -D or -U options"); 343198943Sluigi args[i++] = "-U"; 343298943Sluigi args[i++] = optarg; 343398943Sluigi break; 343498943Sluigi 343598943Sluigi case 'p': 343698943Sluigi pflag = 1; 343798943Sluigi cmd = optarg; 343898943Sluigi args[0] = cmd; 343998943Sluigi i = 1; 344098943Sluigi break; 344198943Sluigi 344298943Sluigi case 'q': 344398943Sluigi qflag = 1; 344498943Sluigi break; 344598943Sluigi 344698943Sluigi default: 344798943Sluigi errx(EX_USAGE, "bad arguments, for usage" 344898943Sluigi " summary ``ipfw''"); 344998943Sluigi } 345098943Sluigi 345198943Sluigi av += optind; 345298943Sluigi ac -= optind; 345398943Sluigi if (ac != 1) 345498943Sluigi errx(EX_USAGE, "extraneous filename arguments"); 345598943Sluigi 345698943Sluigi if ((f = fopen(av[0], "r")) == NULL) 345798943Sluigi err(EX_UNAVAILABLE, "fopen: %s", av[0]); 345898943Sluigi 345998943Sluigi if (pflag) { 346098943Sluigi /* pipe through preprocessor (cpp or m4) */ 346198943Sluigi int pipedes[2]; 346298943Sluigi 346398943Sluigi args[i] = 0; 346498943Sluigi 346598943Sluigi if (pipe(pipedes) == -1) 346698943Sluigi err(EX_OSERR, "cannot create pipe"); 346798943Sluigi 346898943Sluigi switch((preproc = fork())) { 346998943Sluigi case -1: 347098943Sluigi err(EX_OSERR, "cannot fork"); 347198943Sluigi 347298943Sluigi case 0: 347398943Sluigi /* child */ 347498943Sluigi if (dup2(fileno(f), 0) == -1 347598943Sluigi || dup2(pipedes[1], 1) == -1) 347698943Sluigi err(EX_OSERR, "dup2()"); 347798943Sluigi fclose(f); 347898943Sluigi close(pipedes[1]); 347998943Sluigi close(pipedes[0]); 348098943Sluigi execvp(cmd, args); 348198943Sluigi err(EX_OSERR, "execvp(%s) failed", cmd); 348298943Sluigi 348398943Sluigi default: 348498943Sluigi /* parent */ 348598943Sluigi fclose(f); 348698943Sluigi close(pipedes[1]); 348798943Sluigi if ((f = fdopen(pipedes[0], "r")) == NULL) { 348898943Sluigi int savederrno = errno; 348998943Sluigi 349098943Sluigi (void)kill(preproc, SIGTERM); 349198943Sluigi errno = savederrno; 349298943Sluigi err(EX_OSERR, "fdopen()"); 349398943Sluigi } 349498943Sluigi } 349598943Sluigi } 349698943Sluigi 349798943Sluigi while (fgets(buf, BUFSIZ, f)) { 349898943Sluigi lineno++; 349998943Sluigi sprintf(linename, "Line %d", lineno); 350098943Sluigi args[0] = linename; 350198943Sluigi 350298943Sluigi if (*buf == '#') 350398943Sluigi continue; 350498943Sluigi if ((p = strchr(buf, '#')) != NULL) 350598943Sluigi *p = '\0'; 350698943Sluigi i = 1; 350798943Sluigi if (qflag) 350898943Sluigi args[i++] = "-q"; 350998943Sluigi for (a = strtok(buf, WHITESP); 351098943Sluigi a && i < MAX_ARGS; a = strtok(NULL, WHITESP), i++) 351198943Sluigi args[i] = a; 351298943Sluigi if (i == (qflag? 2: 1)) 351398943Sluigi continue; 351498943Sluigi if (i == MAX_ARGS) 351598943Sluigi errx(EX_USAGE, "%s: too many arguments", 351698943Sluigi linename); 351798943Sluigi args[i] = NULL; 351898943Sluigi 351998943Sluigi ipfw_main(i, args); 352098943Sluigi } 352198943Sluigi fclose(f); 352298943Sluigi if (pflag) { 352398943Sluigi if (waitpid(preproc, &status, 0) == -1) 352498943Sluigi errx(EX_OSERR, "waitpid()"); 352598943Sluigi if (WIFEXITED(status) && WEXITSTATUS(status) != EX_OK) 352698943Sluigi errx(EX_UNAVAILABLE, 352798943Sluigi "preprocessor exited with status %d", 352898943Sluigi WEXITSTATUS(status)); 352998943Sluigi else if (WIFSIGNALED(status)) 353098943Sluigi errx(EX_UNAVAILABLE, 353198943Sluigi "preprocessor exited with signal %d", 353298943Sluigi WTERMSIG(status)); 353398943Sluigi } 353498943Sluigi} 353598943Sluigi 353698943Sluigiint 353798943Sluigimain(int ac, char *av[]) 353898943Sluigi{ 353998943Sluigi s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); 354098943Sluigi if (s < 0) 354198943Sluigi err(EX_UNAVAILABLE, "socket"); 354298943Sluigi 354398943Sluigi /* 354498943Sluigi * If the last argument is an absolute pathname, interpret it 354598943Sluigi * as a file to be preprocessed. 354698943Sluigi */ 354798943Sluigi 354898943Sluigi if (ac > 1 && av[ac - 1][0] == '/' && access(av[ac - 1], R_OK) == 0) 354998943Sluigi ipfw_readfile(ac, av); 355098943Sluigi else 355198943Sluigi ipfw_main(ac, av); 355298943Sluigi return EX_OK; 355398943Sluigi} 3554