ipfw2.c revision 112250
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 112250 2003-03-15 01:13:00Z cjc $ 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, 227112250Scjc TOK_VERREVPATH, 22898943Sluigi 22998943Sluigi TOK_PLR, 230101978Sluigi TOK_NOERROR, 23198943Sluigi TOK_BUCKETS, 23298943Sluigi TOK_DSTIP, 23398943Sluigi TOK_SRCIP, 23498943Sluigi TOK_DSTPORT, 23598943Sluigi TOK_SRCPORT, 23698943Sluigi TOK_ALL, 23798943Sluigi TOK_MASK, 23898943Sluigi TOK_BW, 23998943Sluigi TOK_DELAY, 24098943Sluigi TOK_RED, 24198943Sluigi TOK_GRED, 24298943Sluigi TOK_DROPTAIL, 24398943Sluigi TOK_PROTO, 24498943Sluigi TOK_WEIGHT, 24598943Sluigi}; 24698943Sluigi 24798943Sluigistruct _s_x dummynet_params[] = { 24898943Sluigi { "plr", TOK_PLR }, 249101978Sluigi { "noerror", TOK_NOERROR }, 25098943Sluigi { "buckets", TOK_BUCKETS }, 25198943Sluigi { "dst-ip", TOK_DSTIP }, 25298943Sluigi { "src-ip", TOK_SRCIP }, 25398943Sluigi { "dst-port", TOK_DSTPORT }, 25498943Sluigi { "src-port", TOK_SRCPORT }, 25598943Sluigi { "proto", TOK_PROTO }, 25698943Sluigi { "weight", TOK_WEIGHT }, 25798943Sluigi { "all", TOK_ALL }, 25898943Sluigi { "mask", TOK_MASK }, 25998943Sluigi { "droptail", TOK_DROPTAIL }, 26098943Sluigi { "red", TOK_RED }, 26198943Sluigi { "gred", TOK_GRED }, 26298943Sluigi { "bw", TOK_BW }, 26398943Sluigi { "bandwidth", TOK_BW }, 26498943Sluigi { "delay", TOK_DELAY }, 26599475Sluigi { "pipe", TOK_PIPE }, 26698943Sluigi { "queue", TOK_QUEUE }, 26798943Sluigi { "dummynet-params", TOK_NULL }, 26898943Sluigi { NULL, 0 } 26998943Sluigi}; 27098943Sluigi 27198943Sluigistruct _s_x rule_actions[] = { 27298943Sluigi { "accept", TOK_ACCEPT }, 27398943Sluigi { "pass", TOK_ACCEPT }, 27498943Sluigi { "allow", TOK_ACCEPT }, 27598943Sluigi { "permit", TOK_ACCEPT }, 27698943Sluigi { "count", TOK_COUNT }, 27798943Sluigi { "pipe", TOK_PIPE }, 27898943Sluigi { "queue", TOK_QUEUE }, 27998943Sluigi { "divert", TOK_DIVERT }, 28098943Sluigi { "tee", TOK_TEE }, 28198943Sluigi { "fwd", TOK_FORWARD }, 28298943Sluigi { "forward", TOK_FORWARD }, 28398943Sluigi { "skipto", TOK_SKIPTO }, 28498943Sluigi { "deny", TOK_DENY }, 28598943Sluigi { "drop", TOK_DENY }, 28698943Sluigi { "reject", TOK_REJECT }, 28798943Sluigi { "reset", TOK_RESET }, 28899475Sluigi { "unreach", TOK_UNREACH }, 28998943Sluigi { "check-state", TOK_CHECKSTATE }, 29098943Sluigi { NULL, TOK_NULL }, 29198943Sluigi { NULL, 0 } 29298943Sluigi}; 29398943Sluigi 29498943Sluigistruct _s_x rule_options[] = { 29598943Sluigi { "uid", TOK_UID }, 29698943Sluigi { "gid", TOK_GID }, 29798943Sluigi { "in", TOK_IN }, 29898943Sluigi { "limit", TOK_LIMIT }, 29998943Sluigi { "keep-state", TOK_KEEPSTATE }, 30098943Sluigi { "bridged", TOK_LAYER2 }, 30198943Sluigi { "layer2", TOK_LAYER2 }, 30298943Sluigi { "out", TOK_OUT }, 30398943Sluigi { "xmit", TOK_XMIT }, 30498943Sluigi { "recv", TOK_RECV }, 30598943Sluigi { "via", TOK_VIA }, 30698943Sluigi { "fragment", TOK_FRAG }, 30798943Sluigi { "frag", TOK_FRAG }, 30898943Sluigi { "ipoptions", TOK_IPOPTS }, 30998943Sluigi { "ipopts", TOK_IPOPTS }, 31098943Sluigi { "iplen", TOK_IPLEN }, 31198943Sluigi { "ipid", TOK_IPID }, 31298943Sluigi { "ipprecedence", TOK_IPPRECEDENCE }, 31398943Sluigi { "iptos", TOK_IPTOS }, 31498943Sluigi { "ipttl", TOK_IPTTL }, 31598943Sluigi { "ipversion", TOK_IPVER }, 31698943Sluigi { "ipver", TOK_IPVER }, 31798943Sluigi { "estab", TOK_ESTAB }, 31898943Sluigi { "established", TOK_ESTAB }, 31998943Sluigi { "setup", TOK_SETUP }, 32098943Sluigi { "tcpflags", TOK_TCPFLAGS }, 32198943Sluigi { "tcpflgs", TOK_TCPFLAGS }, 32298943Sluigi { "tcpoptions", TOK_TCPOPTS }, 32398943Sluigi { "tcpopts", TOK_TCPOPTS }, 32498943Sluigi { "tcpseq", TOK_TCPSEQ }, 32598943Sluigi { "tcpack", TOK_TCPACK }, 32698943Sluigi { "tcpwin", TOK_TCPWIN }, 32799909Sluigi { "icmptype", TOK_ICMPTYPES }, 32898943Sluigi { "icmptypes", TOK_ICMPTYPES }, 329102087Sluigi { "dst-ip", TOK_DSTIP }, 330102087Sluigi { "src-ip", TOK_SRCIP }, 331102087Sluigi { "dst-port", TOK_DSTPORT }, 332102087Sluigi { "src-port", TOK_SRCPORT }, 333102087Sluigi { "proto", TOK_PROTO }, 334102087Sluigi { "MAC", TOK_MAC }, 335102087Sluigi { "mac", TOK_MAC }, 336102087Sluigi { "mac-type", TOK_MACTYPE }, 337112250Scjc { "verrevpath", TOK_VERREVPATH }, 33898943Sluigi 33998943Sluigi { "not", TOK_NOT }, /* pseudo option */ 34098943Sluigi { "!", /* escape ? */ TOK_NOT }, /* pseudo option */ 34198943Sluigi { "or", TOK_OR }, /* pseudo option */ 34298943Sluigi { "|", /* escape */ TOK_OR }, /* pseudo option */ 343101641Sluigi { "{", TOK_STARTBRACE }, /* pseudo option */ 344101641Sluigi { "(", TOK_STARTBRACE }, /* pseudo option */ 345101641Sluigi { "}", TOK_ENDBRACE }, /* pseudo option */ 346101641Sluigi { ")", TOK_ENDBRACE }, /* pseudo option */ 34798943Sluigi { NULL, TOK_NULL }, 34898943Sluigi { NULL, 0 } 34998943Sluigi}; 35098943Sluigi 35198943Sluigi/** 35298943Sluigi * match_token takes a table and a string, returns the value associated 35398943Sluigi * with the string (0 meaning an error in most cases) 35498943Sluigi */ 35598943Sluigistatic int 35698943Sluigimatch_token(struct _s_x *table, char *string) 35798943Sluigi{ 35898943Sluigi struct _s_x *pt; 35998943Sluigi int i = strlen(string); 36098943Sluigi 36198943Sluigi for (pt = table ; i && pt->s != NULL ; pt++) 36298943Sluigi if (strlen(pt->s) == i && !bcmp(string, pt->s, i)) 36398943Sluigi return pt->x; 36498943Sluigi return -1; 36598943Sluigi}; 36698943Sluigi 36798943Sluigistatic char * 36898943Sluigimatch_value(struct _s_x *p, u_int32_t value) 36998943Sluigi{ 37098943Sluigi for (; p->s != NULL; p++) 37198943Sluigi if (p->x == value) 37298943Sluigi return p->s; 37398943Sluigi return NULL; 37498943Sluigi} 37598943Sluigi 37698943Sluigi/* 37798943Sluigi * prints one port, symbolic or numeric 37898943Sluigi */ 37998943Sluigistatic void 38098943Sluigiprint_port(int proto, u_int16_t port) 38198943Sluigi{ 38298943Sluigi 38398943Sluigi if (proto == IPPROTO_ETHERTYPE) { 38498943Sluigi char *s; 38598943Sluigi 38698943Sluigi if (do_resolv && (s = match_value(ether_types, port)) ) 38798943Sluigi printf("%s", s); 38898943Sluigi else 38998943Sluigi printf("0x%04x", port); 39098943Sluigi } else { 39198943Sluigi struct servent *se = NULL; 39298943Sluigi if (do_resolv) { 39398943Sluigi struct protoent *pe = getprotobynumber(proto); 39498943Sluigi 39598943Sluigi se = getservbyport(htons(port), pe ? pe->p_name : NULL); 39698943Sluigi } 39798943Sluigi if (se) 39898943Sluigi printf("%s", se->s_name); 39998943Sluigi else 40098943Sluigi printf("%d", port); 40198943Sluigi } 40298943Sluigi} 40398943Sluigi 40498943Sluigi/* 40598943Sluigi * print the values in a list of ports 40698943Sluigi * XXX todo: add support for mask. 40798943Sluigi */ 40898943Sluigistatic void 409102087Sluigiprint_newports(ipfw_insn_u16 *cmd, int proto, int opcode) 41098943Sluigi{ 41198943Sluigi u_int16_t *p = cmd->ports; 41298943Sluigi int i; 41398943Sluigi char *sep= " "; 41498943Sluigi 41598943Sluigi if (cmd->o.len & F_NOT) 41698943Sluigi printf(" not"); 417102087Sluigi if (opcode != 0) 418102087Sluigi printf ("%s", opcode == O_MAC_TYPE ? " mac-type" : 419102087Sluigi (opcode == O_IP_DSTPORT ? " dst-port" : " src-port")); 42098943Sluigi for (i = F_LEN((ipfw_insn *)cmd) - 1; i > 0; i--, p += 2) { 42198943Sluigi printf(sep); 42298943Sluigi print_port(proto, p[0]); 42398943Sluigi if (p[0] != p[1]) { 42498943Sluigi printf("-"); 42598943Sluigi print_port(proto, p[1]); 42698943Sluigi } 42798943Sluigi sep = ","; 42898943Sluigi } 42998943Sluigi} 43098943Sluigi 43198943Sluigi/* 43298943Sluigi * Like strtol, but also translates service names into port numbers 43398943Sluigi * for some protocols. 43498943Sluigi * In particular: 43598943Sluigi * proto == -1 disables the protocol check; 43698943Sluigi * proto == IPPROTO_ETHERTYPE looks up an internal table 43798943Sluigi * proto == <some value in /etc/protocols> matches the values there. 438101628Sluigi * Returns *end == s in case the parameter is not found. 43998943Sluigi */ 44098943Sluigistatic int 44198943Sluigistrtoport(char *s, char **end, int base, int proto) 44298943Sluigi{ 443101628Sluigi char *p, *buf; 444101628Sluigi char *s1; 44598943Sluigi int i; 44698943Sluigi 447101628Sluigi *end = s; /* default - not found */ 44898943Sluigi if ( *s == '\0') 449101628Sluigi return 0; /* not found */ 450106505Smaxim 45198943Sluigi if (isdigit(*s)) 45298943Sluigi return strtol(s, end, base); 45398943Sluigi 45498943Sluigi /* 455101628Sluigi * find separator. '\\' escapes the next char. 45698943Sluigi */ 457101628Sluigi for (s1 = s; *s1 && (isalnum(*s1) || *s1 == '\\') ; s1++) 458101628Sluigi if (*s1 == '\\' && s1[1] != '\0') 459101628Sluigi s1++; 46098943Sluigi 461101628Sluigi buf = malloc(s1 - s + 1); 462101628Sluigi if (buf == NULL) 463101628Sluigi return 0; 464101628Sluigi 465101628Sluigi /* 466101628Sluigi * copy into a buffer skipping backslashes 467101628Sluigi */ 468101628Sluigi for (p = s, i = 0; p != s1 ; p++) 469101628Sluigi if ( *p != '\\') 470101628Sluigi buf[i++] = *p; 471101628Sluigi buf[i++] = '\0'; 472101628Sluigi 47398943Sluigi if (proto == IPPROTO_ETHERTYPE) { 474101628Sluigi i = match_token(ether_types, buf); 475101628Sluigi free(buf); 476101628Sluigi if (i != -1) { /* found */ 47798943Sluigi *end = s1; 47898943Sluigi return i; 47998943Sluigi } 48098943Sluigi } else { 48198943Sluigi struct protoent *pe = NULL; 48298943Sluigi struct servent *se; 48398943Sluigi 48498943Sluigi if (proto != 0) 48598943Sluigi pe = getprotobynumber(proto); 48698943Sluigi setservent(1); 487101628Sluigi se = getservbyname(buf, pe ? pe->p_name : NULL); 488101628Sluigi free(buf); 48998943Sluigi if (se != NULL) { 49098943Sluigi *end = s1; 49198943Sluigi return ntohs(se->s_port); 49298943Sluigi } 49398943Sluigi } 494101628Sluigi return 0; /* not found */ 49598943Sluigi} 49698943Sluigi 49798943Sluigi/* 49898943Sluigi * fill the body of the command with the list of port ranges. 49998943Sluigi * At the moment it only understands numeric ranges. 50098943Sluigi */ 50198943Sluigistatic int 50298943Sluigifill_newports(ipfw_insn_u16 *cmd, char *av, int proto) 50398943Sluigi{ 50498943Sluigi u_int16_t *p = cmd->ports; 50598943Sluigi int i = 0; 506102087Sluigi char *s = av; 50798943Sluigi 508102087Sluigi while (*s) { 50998943Sluigi u_int16_t a, b; 51098943Sluigi 51198943Sluigi a = strtoport(av, &s, 0, proto); 51298943Sluigi if (s == av) /* no parameter */ 51398943Sluigi break; 51498943Sluigi if (*s == '-') { /* a range */ 51598943Sluigi av = s+1; 51698943Sluigi b = strtoport(av, &s, 0, proto); 51798943Sluigi if (s == av) /* no parameter */ 51898943Sluigi break; 51998943Sluigi p[0] = a; 52098943Sluigi p[1] = b; 52198943Sluigi } else if (*s == ',' || *s == '\0' ) { 52298943Sluigi p[0] = p[1] = a; 523101978Sluigi } else { /* invalid separator */ 524101978Sluigi errx(EX_DATAERR, "invalid separator <%c> in <%s>\n", 525101978Sluigi *s, av); 526101978Sluigi } 527102087Sluigi i++; 528102087Sluigi p += 2; 52998943Sluigi av = s+1; 53098943Sluigi } 53198943Sluigi if (i > 0) { 53298943Sluigi if (i+1 > F_LEN_MASK) 533102087Sluigi errx(EX_DATAERR, "too many ports/ranges\n"); 53498943Sluigi cmd->o.len |= i+1; /* leave F_NOT and F_OR untouched */ 53598943Sluigi } 53698943Sluigi return i; 53798943Sluigi} 53898943Sluigi 53998943Sluigistatic struct _s_x icmpcodes[] = { 54098943Sluigi { "net", ICMP_UNREACH_NET }, 54198943Sluigi { "host", ICMP_UNREACH_HOST }, 54298943Sluigi { "protocol", ICMP_UNREACH_PROTOCOL }, 54398943Sluigi { "port", ICMP_UNREACH_PORT }, 54498943Sluigi { "needfrag", ICMP_UNREACH_NEEDFRAG }, 54598943Sluigi { "srcfail", ICMP_UNREACH_SRCFAIL }, 54698943Sluigi { "net-unknown", ICMP_UNREACH_NET_UNKNOWN }, 54798943Sluigi { "host-unknown", ICMP_UNREACH_HOST_UNKNOWN }, 54898943Sluigi { "isolated", ICMP_UNREACH_ISOLATED }, 54998943Sluigi { "net-prohib", ICMP_UNREACH_NET_PROHIB }, 55098943Sluigi { "host-prohib", ICMP_UNREACH_HOST_PROHIB }, 55198943Sluigi { "tosnet", ICMP_UNREACH_TOSNET }, 55298943Sluigi { "toshost", ICMP_UNREACH_TOSHOST }, 55398943Sluigi { "filter-prohib", ICMP_UNREACH_FILTER_PROHIB }, 55498943Sluigi { "host-precedence", ICMP_UNREACH_HOST_PRECEDENCE }, 55598943Sluigi { "precedence-cutoff", ICMP_UNREACH_PRECEDENCE_CUTOFF }, 55698943Sluigi { NULL, 0 } 55798943Sluigi}; 55898943Sluigi 55998943Sluigistatic void 56098943Sluigifill_reject_code(u_short *codep, char *str) 56198943Sluigi{ 56298943Sluigi int val; 56398943Sluigi char *s; 56498943Sluigi 56598943Sluigi val = strtoul(str, &s, 0); 56698943Sluigi if (s == str || *s != '\0' || val >= 0x100) 56798943Sluigi val = match_token(icmpcodes, str); 568102087Sluigi if (val < 0) 56998943Sluigi errx(EX_DATAERR, "unknown ICMP unreachable code ``%s''", str); 57098943Sluigi *codep = val; 57198943Sluigi return; 57298943Sluigi} 57398943Sluigi 57498943Sluigistatic void 57599475Sluigiprint_reject_code(u_int16_t code) 57698943Sluigi{ 57798943Sluigi char *s = match_value(icmpcodes, code); 57898943Sluigi 57998943Sluigi if (s != NULL) 58099475Sluigi printf("unreach %s", s); 58198943Sluigi else 58299475Sluigi printf("unreach %u", code); 58398943Sluigi} 58498943Sluigi 58598943Sluigi/* 58698943Sluigi * Returns the number of bits set (from left) in a contiguous bitmask, 58798943Sluigi * or -1 if the mask is not contiguous. 58898943Sluigi * XXX this needs a proper fix. 58998943Sluigi * This effectively works on masks in big-endian (network) format. 59098943Sluigi * when compiled on little endian architectures. 59198943Sluigi * 59298943Sluigi * First bit is bit 7 of the first byte -- note, for MAC addresses, 59398943Sluigi * the first bit on the wire is bit 0 of the first byte. 59498943Sluigi * len is the max length in bits. 59598943Sluigi */ 59698943Sluigistatic int 59798943Sluigicontigmask(u_char *p, int len) 59898943Sluigi{ 59998943Sluigi int i, n; 60098943Sluigi for (i=0; i<len ; i++) 60198943Sluigi if ( (p[i/8] & (1 << (7 - (i%8)))) == 0) /* first bit unset */ 60298943Sluigi break; 60398943Sluigi for (n=i+1; n < len; n++) 60498943Sluigi if ( (p[n/8] & (1 << (7 - (n%8)))) != 0) 60598943Sluigi return -1; /* mask not contiguous */ 60698943Sluigi return i; 60798943Sluigi} 60898943Sluigi 60998943Sluigi/* 61098943Sluigi * print flags set/clear in the two bitmasks passed as parameters. 61198943Sluigi * There is a specialized check for f_tcpflags. 61298943Sluigi */ 61398943Sluigistatic void 61498943Sluigiprint_flags(char *name, ipfw_insn *cmd, struct _s_x *list) 61598943Sluigi{ 61698943Sluigi char *comma=""; 61798943Sluigi int i; 61898943Sluigi u_char set = cmd->arg1 & 0xff; 61998943Sluigi u_char clear = (cmd->arg1 >> 8) & 0xff; 62098943Sluigi 62198943Sluigi if (list == f_tcpflags && set == TH_SYN && clear == TH_ACK) { 62298943Sluigi printf(" setup"); 62398943Sluigi return; 62498943Sluigi } 62598943Sluigi 62698943Sluigi printf(" %s ", name); 62798943Sluigi for (i=0; list[i].x != 0; i++) { 62898943Sluigi if (set & list[i].x) { 62998943Sluigi set &= ~list[i].x; 63098943Sluigi printf("%s%s", comma, list[i].s); 63198943Sluigi comma = ","; 63298943Sluigi } 63398943Sluigi if (clear & list[i].x) { 63498943Sluigi clear &= ~list[i].x; 63598943Sluigi printf("%s!%s", comma, list[i].s); 63698943Sluigi comma = ","; 63798943Sluigi } 63898943Sluigi } 63998943Sluigi} 64098943Sluigi 64198943Sluigi/* 64298943Sluigi * Print the ip address contained in a command. 64398943Sluigi */ 64498943Sluigistatic void 645102087Sluigiprint_ip(ipfw_insn_ip *cmd, char *s) 64698943Sluigi{ 64798943Sluigi struct hostent *he = NULL; 64898943Sluigi int mb; 64998943Sluigi 650102087Sluigi printf("%s%s ", cmd->o.len & F_NOT ? " not": "", s); 65198943Sluigi 65298943Sluigi if (cmd->o.opcode == O_IP_SRC_ME || cmd->o.opcode == O_IP_DST_ME) { 65398943Sluigi printf("me"); 65498943Sluigi return; 65598943Sluigi } 65698943Sluigi if (cmd->o.opcode == O_IP_SRC_SET || cmd->o.opcode == O_IP_DST_SET) { 65798943Sluigi u_int32_t x, *d; 65898943Sluigi int i; 65998943Sluigi char comma = '{'; 66098943Sluigi 66198943Sluigi x = cmd->o.arg1 - 1; 66298943Sluigi x = htonl( ~x ); 66398943Sluigi cmd->addr.s_addr = htonl(cmd->addr.s_addr); 66498943Sluigi printf("%s/%d", inet_ntoa(cmd->addr), 66598943Sluigi contigmask((u_char *)&x, 32)); 66698943Sluigi x = cmd->addr.s_addr = htonl(cmd->addr.s_addr); 66798943Sluigi x &= 0xff; /* base */ 66898943Sluigi d = (u_int32_t *)&(cmd->mask); 66998943Sluigi for (i=0; i < cmd->o.arg1; i++) 67098943Sluigi if (d[ i/32] & (1<<(i & 31))) { 67198943Sluigi printf("%c%d", comma, i+x); 67298943Sluigi comma = ','; 67398943Sluigi } 67498943Sluigi printf("}"); 67598943Sluigi return; 67698943Sluigi } 67798943Sluigi if (cmd->o.opcode == O_IP_SRC || cmd->o.opcode == O_IP_DST) 67898943Sluigi mb = 32; 67998943Sluigi else 68098943Sluigi mb = contigmask((u_char *)&(cmd->mask.s_addr), 32); 68198943Sluigi if (mb == 32 && do_resolv) 68298943Sluigi he = gethostbyaddr((char *)&(cmd->addr.s_addr), 68398943Sluigi sizeof(u_long), AF_INET); 68498943Sluigi if (he != NULL) /* resolved to name */ 68598943Sluigi printf("%s", he->h_name); 68698943Sluigi else if (mb == 0) /* any */ 68798943Sluigi printf("any"); 68898943Sluigi else { /* numeric IP followed by some kind of mask */ 68998943Sluigi printf("%s", inet_ntoa(cmd->addr)); 69098943Sluigi if (mb < 0) 69198943Sluigi printf(":%s", inet_ntoa(cmd->mask)); 69298943Sluigi else if (mb < 32) 69398943Sluigi printf("/%d", mb); 69498943Sluigi } 69598943Sluigi} 69698943Sluigi 69798943Sluigi/* 69898943Sluigi * prints a MAC address/mask pair 69998943Sluigi */ 70098943Sluigistatic void 70198943Sluigiprint_mac(u_char *addr, u_char *mask) 70298943Sluigi{ 70398943Sluigi int l = contigmask(mask, 48); 70498943Sluigi 70598943Sluigi if (l == 0) 70698943Sluigi printf(" any"); 70798943Sluigi else { 70898943Sluigi printf(" %02x:%02x:%02x:%02x:%02x:%02x", 70998943Sluigi addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 71098943Sluigi if (l == -1) 71198943Sluigi printf("&%02x:%02x:%02x:%02x:%02x:%02x", 71298943Sluigi mask[0], mask[1], mask[2], 71398943Sluigi mask[3], mask[4], mask[5]); 71498943Sluigi else if (l < 48) 71598943Sluigi printf("/%d", l); 71698943Sluigi } 71798943Sluigi} 71898943Sluigi 71999475Sluigistatic void 72099475Sluigifill_icmptypes(ipfw_insn_u32 *cmd, char *av) 72199475Sluigi{ 72299475Sluigi u_int8_t type; 72398943Sluigi 72499475Sluigi cmd->d[0] = 0; 72599475Sluigi while (*av) { 72699475Sluigi if (*av == ',') 72799475Sluigi av++; 72899475Sluigi 72999475Sluigi type = strtoul(av, &av, 0); 73099475Sluigi 73199475Sluigi if (*av != ',' && *av != '\0') 73299475Sluigi errx(EX_DATAERR, "invalid ICMP type"); 73399475Sluigi 73499475Sluigi if (type > 31) 73599475Sluigi errx(EX_DATAERR, "ICMP type out of range"); 73699475Sluigi 73799475Sluigi cmd->d[0] |= 1 << type; 73899475Sluigi } 73999475Sluigi cmd->o.opcode = O_ICMPTYPE; 74099475Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 74199475Sluigi} 74299475Sluigi 74399475Sluigistatic void 74499475Sluigiprint_icmptypes(ipfw_insn_u32 *cmd) 74599475Sluigi{ 74699475Sluigi int i; 74799475Sluigi char sep= ' '; 74899475Sluigi 74999475Sluigi printf(" icmptypes"); 75099475Sluigi for (i = 0; i < 32; i++) { 75199475Sluigi if ( (cmd->d[0] & (1 << (i))) == 0) 75299475Sluigi continue; 75399475Sluigi printf("%c%d", sep, i); 75499475Sluigi sep = ','; 75599475Sluigi } 75699475Sluigi} 75799475Sluigi 75898943Sluigi/* 75998943Sluigi * show_ipfw() prints the body of an ipfw rule. 76098943Sluigi * Because the standard rule has at least proto src_ip dst_ip, we use 76198943Sluigi * a helper function to produce these entries if not provided explicitly. 762102087Sluigi * The first argument is the list of fields we have, the second is 763102087Sluigi * the list of fields we want to be printed. 764101978Sluigi * 765102087Sluigi * Special cases if we have provided a MAC header: 766102087Sluigi * + if the rule does not contain IP addresses/ports, do not print them; 767102087Sluigi * + if the rule does not contain an IP proto, print "all" instead of "ip"; 768102087Sluigi * 769102087Sluigi * Once we have 'have_options', IP header fields are printed as options. 77098943Sluigi */ 771101978Sluigi#define HAVE_PROTO 0x0001 772101978Sluigi#define HAVE_SRCIP 0x0002 773101978Sluigi#define HAVE_DSTIP 0x0004 774101978Sluigi#define HAVE_MAC 0x0008 775101978Sluigi#define HAVE_MACTYPE 0x0010 776102087Sluigi#define HAVE_OPTIONS 0x8000 77798943Sluigi 778101978Sluigi#define HAVE_IP (HAVE_PROTO | HAVE_SRCIP | HAVE_DSTIP) 77998943Sluigistatic void 780102087Sluigishow_prerequisites(int *flags, int want, int cmd) 78198943Sluigi{ 782102087Sluigi if ( (*flags & HAVE_IP) == HAVE_IP) 783102087Sluigi *flags |= HAVE_OPTIONS; 784102087Sluigi 785102087Sluigi if ( (*flags & (HAVE_MAC|HAVE_MACTYPE|HAVE_OPTIONS)) == HAVE_MAC && 786102087Sluigi cmd != O_MAC_TYPE) { 787102087Sluigi /* 788102087Sluigi * mac-type was optimized out by the compiler, 789102087Sluigi * restore it 790102087Sluigi */ 791102087Sluigi printf(" any"); 792102087Sluigi *flags |= HAVE_MACTYPE | HAVE_OPTIONS; 793102087Sluigi return; 794101978Sluigi } 795102087Sluigi if ( !(*flags & HAVE_OPTIONS)) { 796102087Sluigi if ( !(*flags & HAVE_PROTO) && (want & HAVE_PROTO)) 797102087Sluigi printf(" ip"); 798102087Sluigi if ( !(*flags & HAVE_SRCIP) && (want & HAVE_SRCIP)) 799102087Sluigi printf(" from any"); 800102087Sluigi if ( !(*flags & HAVE_DSTIP) && (want & HAVE_DSTIP)) 801102087Sluigi printf(" to any"); 802102087Sluigi } 80398943Sluigi *flags |= want; 80498943Sluigi} 80598943Sluigi 80698943Sluigistatic void 807112189Smaximshow_ipfw(struct ip_fw *rule, int pcwidth, int bcwidth) 80898943Sluigi{ 809107291Skeramida static int twidth = 0; 81098943Sluigi int l; 81198943Sluigi ipfw_insn *cmd; 81298943Sluigi int proto = 0; /* default */ 81398943Sluigi int flags = 0; /* prerequisites */ 81498943Sluigi ipfw_insn_log *logptr = NULL; /* set if we find an O_LOG */ 81598943Sluigi int or_block = 0; /* we are in an or block */ 81698943Sluigi 817105887Smux u_int32_t set_disable = rule->set_disable; 818101628Sluigi 819101628Sluigi if (set_disable & (1 << rule->set)) { /* disabled */ 820101628Sluigi if (!show_sets) 821101628Sluigi return; 822101628Sluigi else 823101628Sluigi printf("# DISABLED "); 824101628Sluigi } 82598943Sluigi printf("%05u ", rule->rulenum); 82698943Sluigi 82798943Sluigi if (do_acct) 828112189Smaxim printf("%*llu %*llu ", pcwidth, rule->pcnt, bcwidth, 829112189Smaxim rule->bcnt); 83098943Sluigi 83198943Sluigi if (do_time) { 832107291Skeramida char timestr[30]; 833107291Skeramida time_t t = (time_t)0; 834107291Skeramida 835107291Skeramida if (twidth == 0) { 836107291Skeramida strcpy(timestr, ctime(&t)); 837107291Skeramida *strchr(timestr, '\n') = '\0'; 838107291Skeramida twidth = strlen(timestr); 839107291Skeramida } 84098943Sluigi if (rule->timestamp) { 841107291Skeramida t = _long_to_time(rule->timestamp); 84298943Sluigi 84398943Sluigi strcpy(timestr, ctime(&t)); 84498943Sluigi *strchr(timestr, '\n') = '\0'; 84598943Sluigi printf("%s ", timestr); 84698943Sluigi } else { 847107291Skeramida printf("%*s", twidth, " "); 84898943Sluigi } 84998943Sluigi } 85098943Sluigi 851101628Sluigi if (show_sets) 852101628Sluigi printf("set %d ", rule->set); 853101628Sluigi 85498943Sluigi /* 855107289Sluigi * print the optional "match probability" 856107289Sluigi */ 857107289Sluigi if (rule->cmd_len > 0) { 858107289Sluigi cmd = rule->cmd ; 859107289Sluigi if (cmd->opcode == O_PROB) { 860107289Sluigi ipfw_insn_u32 *p = (ipfw_insn_u32 *)cmd; 861107289Sluigi double d = 1.0 * p->d[0]; 862107289Sluigi 863107289Sluigi d = (d / 0x7fffffff); 864107289Sluigi printf("prob %f ", d); 865107289Sluigi } 866107289Sluigi } 867107289Sluigi 868107289Sluigi /* 86998943Sluigi * first print actions 87098943Sluigi */ 87198943Sluigi for (l = rule->cmd_len - rule->act_ofs, cmd = ACTION_PTR(rule); 87298943Sluigi l > 0 ; l -= F_LEN(cmd), cmd += F_LEN(cmd)) { 87398943Sluigi switch(cmd->opcode) { 87498943Sluigi case O_CHECK_STATE: 87598943Sluigi printf("check-state"); 876102087Sluigi flags = HAVE_IP; /* avoid printing anything else */ 87798943Sluigi break; 87898943Sluigi 87998943Sluigi case O_ACCEPT: 88098943Sluigi printf("allow"); 88198943Sluigi break; 88298943Sluigi 88398943Sluigi case O_COUNT: 88498943Sluigi printf("count"); 88598943Sluigi break; 88698943Sluigi 88798943Sluigi case O_DENY: 88898943Sluigi printf("deny"); 88998943Sluigi break; 89098943Sluigi 89199475Sluigi case O_REJECT: 89299475Sluigi if (cmd->arg1 == ICMP_REJECT_RST) 89399475Sluigi printf("reset"); 89499475Sluigi else if (cmd->arg1 == ICMP_UNREACH_HOST) 89599475Sluigi printf("reject"); 89699475Sluigi else 89799475Sluigi print_reject_code(cmd->arg1); 89899475Sluigi break; 89999475Sluigi 90098943Sluigi case O_SKIPTO: 90198943Sluigi printf("skipto %u", cmd->arg1); 90298943Sluigi break; 90398943Sluigi 90498943Sluigi case O_PIPE: 90598943Sluigi printf("pipe %u", cmd->arg1); 90698943Sluigi break; 90798943Sluigi 90898943Sluigi case O_QUEUE: 90998943Sluigi printf("queue %u", cmd->arg1); 91098943Sluigi break; 91198943Sluigi 91298943Sluigi case O_DIVERT: 91398943Sluigi printf("divert %u", cmd->arg1); 91498943Sluigi break; 91598943Sluigi 91698943Sluigi case O_TEE: 91798943Sluigi printf("tee %u", cmd->arg1); 91898943Sluigi break; 91998943Sluigi 92098943Sluigi case O_FORWARD_IP: 92198943Sluigi { 92298943Sluigi ipfw_insn_sa *s = (ipfw_insn_sa *)cmd; 92398943Sluigi 92498943Sluigi printf("fwd %s", inet_ntoa(s->sa.sin_addr)); 92598943Sluigi if (s->sa.sin_port) 926103241Sluigi printf(",%d", s->sa.sin_port); 92798943Sluigi } 92898943Sluigi break; 92998943Sluigi 93098943Sluigi case O_LOG: /* O_LOG is printed last */ 93198943Sluigi logptr = (ipfw_insn_log *)cmd; 93298943Sluigi break; 93398943Sluigi 93498943Sluigi default: 93598943Sluigi printf("** unrecognized action %d len %d", 93698943Sluigi cmd->opcode, cmd->len); 93798943Sluigi } 93898943Sluigi } 93998943Sluigi if (logptr) { 94098943Sluigi if (logptr->max_log > 0) 94199909Sluigi printf(" log logamount %d", logptr->max_log); 94298943Sluigi else 94399909Sluigi printf(" log"); 94498943Sluigi } 945102087Sluigi 94698943Sluigi /* 947102087Sluigi * then print the body. 94898943Sluigi */ 949102087Sluigi if (rule->_pad & 1) { /* empty rules before options */ 950102098Sluigi if (!do_compact) 951102098Sluigi printf(" ip from any to any"); 952102087Sluigi flags |= HAVE_IP | HAVE_OPTIONS; 953102087Sluigi } 954102087Sluigi 95598943Sluigi for (l = rule->act_ofs, cmd = rule->cmd ; 95698943Sluigi l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 95799475Sluigi /* useful alias */ 95899475Sluigi ipfw_insn_u32 *cmd32 = (ipfw_insn_u32 *)cmd; 95998943Sluigi 960102087Sluigi show_prerequisites(&flags, 0, cmd->opcode); 961102087Sluigi 96298943Sluigi switch(cmd->opcode) { 963107289Sluigi case O_PROB: 964107289Sluigi break; /* done already */ 965107289Sluigi 96698943Sluigi case O_PROBE_STATE: 96798943Sluigi break; /* no need to print anything here */ 96898943Sluigi 96998943Sluigi case O_MACADDR2: { 97098943Sluigi ipfw_insn_mac *m = (ipfw_insn_mac *)cmd; 971102087Sluigi 972102087Sluigi if ((cmd->len & F_OR) && !or_block) 973102087Sluigi printf(" {"); 97498943Sluigi if (cmd->len & F_NOT) 97598943Sluigi printf(" not"); 976102087Sluigi printf(" MAC"); 977102087Sluigi flags |= HAVE_MAC; 97898943Sluigi print_mac( m->addr, m->mask); 97998943Sluigi print_mac( m->addr + 6, m->mask + 6); 98098943Sluigi } 98198943Sluigi break; 98298943Sluigi 98398943Sluigi case O_MAC_TYPE: 984102087Sluigi if ((cmd->len & F_OR) && !or_block) 985102087Sluigi printf(" {"); 986102087Sluigi print_newports((ipfw_insn_u16 *)cmd, IPPROTO_ETHERTYPE, 987102087Sluigi (flags & HAVE_OPTIONS) ? cmd->opcode : 0); 988102087Sluigi flags |= HAVE_MAC | HAVE_MACTYPE | HAVE_OPTIONS; 98998943Sluigi break; 99098943Sluigi 99198943Sluigi case O_IP_SRC: 99298943Sluigi case O_IP_SRC_MASK: 99398943Sluigi case O_IP_SRC_ME: 99498943Sluigi case O_IP_SRC_SET: 995102087Sluigi show_prerequisites(&flags, HAVE_PROTO, 0); 99698943Sluigi if (!(flags & HAVE_SRCIP)) 99798943Sluigi printf(" from"); 99898943Sluigi if ((cmd->len & F_OR) && !or_block) 99998943Sluigi printf(" {"); 1000102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1001102087Sluigi (flags & HAVE_OPTIONS) ? " src-ip" : ""); 100298943Sluigi flags |= HAVE_SRCIP; 100398943Sluigi break; 100498943Sluigi 100598943Sluigi case O_IP_DST: 100698943Sluigi case O_IP_DST_MASK: 100798943Sluigi case O_IP_DST_ME: 100898943Sluigi case O_IP_DST_SET: 1009102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 101098943Sluigi if (!(flags & HAVE_DSTIP)) 101198943Sluigi printf(" to"); 101298943Sluigi if ((cmd->len & F_OR) && !or_block) 101398943Sluigi printf(" {"); 1014102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1015102087Sluigi (flags & HAVE_OPTIONS) ? " dst-ip" : ""); 101698943Sluigi flags |= HAVE_DSTIP; 101798943Sluigi break; 101898943Sluigi 101998943Sluigi case O_IP_DSTPORT: 1020102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 102198943Sluigi case O_IP_SRCPORT: 1022102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 1023101641Sluigi if ((cmd->len & F_OR) && !or_block) 1024101641Sluigi printf(" {"); 1025102087Sluigi print_newports((ipfw_insn_u16 *)cmd, proto, 1026102087Sluigi (flags & HAVE_OPTIONS) ? cmd->opcode : 0); 102798943Sluigi break; 102898943Sluigi 102998943Sluigi case O_PROTO: { 103098943Sluigi struct protoent *pe; 103198943Sluigi 103298943Sluigi if ((cmd->len & F_OR) && !or_block) 103398943Sluigi printf(" {"); 103498943Sluigi if (cmd->len & F_NOT) 103598943Sluigi printf(" not"); 103698943Sluigi proto = cmd->arg1; 103798943Sluigi pe = getprotobynumber(cmd->arg1); 1038102087Sluigi if (flags & HAVE_OPTIONS) 1039102087Sluigi printf(" proto"); 104098943Sluigi if (pe) 104198943Sluigi printf(" %s", pe->p_name); 104298943Sluigi else 104398943Sluigi printf(" %u", cmd->arg1); 104498943Sluigi } 104598943Sluigi flags |= HAVE_PROTO; 104698943Sluigi break; 1047106505Smaxim 104898943Sluigi default: /*options ... */ 1049102087Sluigi show_prerequisites(&flags, HAVE_IP | HAVE_OPTIONS, 0); 105098943Sluigi if ((cmd->len & F_OR) && !or_block) 105198943Sluigi printf(" {"); 105298943Sluigi if (cmd->len & F_NOT && cmd->opcode != O_IN) 105398943Sluigi printf(" not"); 105498943Sluigi switch(cmd->opcode) { 105598943Sluigi case O_FRAG: 105698943Sluigi printf(" frag"); 105798943Sluigi break; 105898943Sluigi 105998943Sluigi case O_IN: 106098943Sluigi printf(cmd->len & F_NOT ? " out" : " in"); 106198943Sluigi break; 106298943Sluigi 106398943Sluigi case O_LAYER2: 106498943Sluigi printf(" layer2"); 106598943Sluigi break; 106698943Sluigi case O_XMIT: 106798943Sluigi case O_RECV: 106898943Sluigi case O_VIA: { 106998943Sluigi char *s; 107098943Sluigi ipfw_insn_if *cmdif = (ipfw_insn_if *)cmd; 107198943Sluigi 107298943Sluigi if (cmd->opcode == O_XMIT) 107398943Sluigi s = "xmit"; 107498943Sluigi else if (cmd->opcode == O_RECV) 107598943Sluigi s = "recv"; 107698943Sluigi else if (cmd->opcode == O_VIA) 107798943Sluigi s = "via"; 107898943Sluigi if (cmdif->name[0] == '\0') 107999475Sluigi printf(" %s %s", s, 108099475Sluigi inet_ntoa(cmdif->p.ip)); 108198943Sluigi else if (cmdif->p.unit == -1) 108298943Sluigi printf(" %s %s*", s, cmdif->name); 108398943Sluigi else 108499475Sluigi printf(" %s %s%d", s, cmdif->name, 108599475Sluigi cmdif->p.unit); 108698943Sluigi } 108798943Sluigi break; 108898943Sluigi 108998943Sluigi case O_IPID: 109098943Sluigi printf(" ipid %u", cmd->arg1 ); 109198943Sluigi break; 109298943Sluigi 109398943Sluigi case O_IPTTL: 109498943Sluigi printf(" ipttl %u", cmd->arg1 ); 109598943Sluigi break; 109698943Sluigi 109798943Sluigi case O_IPVER: 109898943Sluigi printf(" ipver %u", cmd->arg1 ); 109998943Sluigi break; 110098943Sluigi 110199475Sluigi case O_IPPRECEDENCE: 110299475Sluigi printf(" ipprecedence %u", (cmd->arg1) >> 5 ); 110399475Sluigi break; 110499475Sluigi 110598943Sluigi case O_IPLEN: 110698943Sluigi printf(" iplen %u", cmd->arg1 ); 110798943Sluigi break; 110898943Sluigi 1109101116Sluigi case O_IPOPT: 111098943Sluigi print_flags("ipoptions", cmd, f_ipopts); 111198943Sluigi break; 111298943Sluigi 111399475Sluigi case O_IPTOS: 111499475Sluigi print_flags("iptos", cmd, f_iptos); 111599475Sluigi break; 111699475Sluigi 111799475Sluigi case O_ICMPTYPE: 111899475Sluigi print_icmptypes((ipfw_insn_u32 *)cmd); 111999475Sluigi break; 112099475Sluigi 112198943Sluigi case O_ESTAB: 112298943Sluigi printf(" established"); 112398943Sluigi break; 112498943Sluigi 112598943Sluigi case O_TCPFLAGS: 112698943Sluigi print_flags("tcpflags", cmd, f_tcpflags); 112798943Sluigi break; 112898943Sluigi 112998943Sluigi case O_TCPOPTS: 113098943Sluigi print_flags("tcpoptions", cmd, f_tcpopts); 113198943Sluigi break; 113298943Sluigi 113398943Sluigi case O_TCPWIN: 113498943Sluigi printf(" tcpwin %d", ntohs(cmd->arg1)); 113598943Sluigi break; 113698943Sluigi 113798943Sluigi case O_TCPACK: 113898943Sluigi printf(" tcpack %d", ntohl(cmd32->d[0])); 113998943Sluigi break; 114098943Sluigi 114198943Sluigi case O_TCPSEQ: 114298943Sluigi printf(" tcpseq %d", ntohl(cmd32->d[0])); 114398943Sluigi break; 114498943Sluigi 114598943Sluigi case O_UID: 114698943Sluigi { 114798943Sluigi struct passwd *pwd = getpwuid(cmd32->d[0]); 114898943Sluigi 114998943Sluigi if (pwd) 115098943Sluigi printf(" uid %s", pwd->pw_name); 115198943Sluigi else 115298943Sluigi printf(" uid %u", cmd32->d[0]); 115398943Sluigi } 115498943Sluigi break; 115598943Sluigi 115698943Sluigi case O_GID: 115798943Sluigi { 115898943Sluigi struct group *grp = getgrgid(cmd32->d[0]); 115998943Sluigi 116098943Sluigi if (grp) 116198943Sluigi printf(" gid %s", grp->gr_name); 116298943Sluigi else 116398943Sluigi printf(" gid %u", cmd32->d[0]); 116498943Sluigi } 116598943Sluigi break; 116698943Sluigi 1167112250Scjc case O_VERREVPATH: 1168112250Scjc printf(" verrevpath"); 1169112250Scjc break; 1170112250Scjc 117198943Sluigi case O_KEEP_STATE: 117298943Sluigi printf(" keep-state"); 117398943Sluigi break; 117498943Sluigi 117598943Sluigi case O_LIMIT: 117698943Sluigi { 117798943Sluigi struct _s_x *p = limit_masks; 117898943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 117998943Sluigi u_int8_t x = c->limit_mask; 118098943Sluigi char *comma = " "; 118198943Sluigi 118298943Sluigi printf(" limit"); 1183106505Smaxim for ( ; p->x != 0 ; p++) 118499909Sluigi if ((x & p->x) == p->x) { 118598943Sluigi x &= ~p->x; 118698943Sluigi printf("%s%s", comma, p->s); 118798943Sluigi comma = ","; 118898943Sluigi } 118998943Sluigi printf(" %d", c->conn_limit); 119098943Sluigi } 119198943Sluigi break; 119298943Sluigi 119398943Sluigi default: 119498943Sluigi printf(" [opcode %d len %d]", 119598943Sluigi cmd->opcode, cmd->len); 119698943Sluigi } 119798943Sluigi } 119898943Sluigi if (cmd->len & F_OR) { 119998943Sluigi printf(" or"); 120098943Sluigi or_block = 1; 120198943Sluigi } else if (or_block) { 120298943Sluigi printf(" }"); 120398943Sluigi or_block = 0; 120498943Sluigi } 120598943Sluigi } 1206102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 120798943Sluigi 120898943Sluigi printf("\n"); 120998943Sluigi} 121098943Sluigi 121198943Sluigistatic void 1212112189Smaximshow_dyn_ipfw(ipfw_dyn_rule *d, int pcwidth, int bcwidth) 121398943Sluigi{ 121498943Sluigi struct protoent *pe; 121598943Sluigi struct in_addr a; 121698943Sluigi 121798943Sluigi if (!do_expired) { 121898943Sluigi if (!d->expire && !(d->dyn_type == O_LIMIT_PARENT)) 121998943Sluigi return; 122098943Sluigi } 122198943Sluigi 1222112189Smaxim printf("%05d %*llu %*llu (%ds)", d->rulenum, pcwidth, d->pcnt, bcwidth, 1223112189Smaxim d->bcnt, d->expire); 122498943Sluigi switch (d->dyn_type) { 122598943Sluigi case O_LIMIT_PARENT: 122698943Sluigi printf(" PARENT %d", d->count); 122798943Sluigi break; 122898943Sluigi case O_LIMIT: 122998943Sluigi printf(" LIMIT"); 123098943Sluigi break; 123198943Sluigi case O_KEEP_STATE: /* bidir, no mask */ 1232106505Smaxim printf(" STATE"); 123398943Sluigi break; 123498943Sluigi } 123598943Sluigi 123698943Sluigi if ((pe = getprotobynumber(d->id.proto)) != NULL) 123798943Sluigi printf(" %s", pe->p_name); 123898943Sluigi else 123998943Sluigi printf(" proto %u", d->id.proto); 124098943Sluigi 124198943Sluigi a.s_addr = htonl(d->id.src_ip); 124298943Sluigi printf(" %s %d", inet_ntoa(a), d->id.src_port); 124398943Sluigi 124498943Sluigi a.s_addr = htonl(d->id.dst_ip); 124598943Sluigi printf(" <-> %s %d", inet_ntoa(a), d->id.dst_port); 124698943Sluigi printf("\n"); 124798943Sluigi} 124898943Sluigi 124998943Sluigiint 125098943Sluigisort_q(const void *pa, const void *pb) 125198943Sluigi{ 125298943Sluigi int rev = (do_sort < 0); 125398943Sluigi int field = rev ? -do_sort : do_sort; 125498943Sluigi long long res = 0; 125598943Sluigi const struct dn_flow_queue *a = pa; 125698943Sluigi const struct dn_flow_queue *b = pb; 125798943Sluigi 125898943Sluigi switch (field) { 125998943Sluigi case 1: /* pkts */ 126098943Sluigi res = a->len - b->len; 126198943Sluigi break; 126298943Sluigi case 2: /* bytes */ 126398943Sluigi res = a->len_bytes - b->len_bytes; 126498943Sluigi break; 126598943Sluigi 126698943Sluigi case 3: /* tot pkts */ 126798943Sluigi res = a->tot_pkts - b->tot_pkts; 126898943Sluigi break; 126998943Sluigi 127098943Sluigi case 4: /* tot bytes */ 127198943Sluigi res = a->tot_bytes - b->tot_bytes; 127298943Sluigi break; 127398943Sluigi } 127498943Sluigi if (res < 0) 127598943Sluigi res = -1; 127698943Sluigi if (res > 0) 127798943Sluigi res = 1; 127898943Sluigi return (int)(rev ? res : -res); 127998943Sluigi} 128098943Sluigi 128198943Sluigistatic void 128298943Sluigilist_queues(struct dn_flow_set *fs, struct dn_flow_queue *q) 128398943Sluigi{ 128498943Sluigi int l; 128598943Sluigi 128698943Sluigi printf(" mask: 0x%02x 0x%08x/0x%04x -> 0x%08x/0x%04x\n", 128798943Sluigi fs->flow_mask.proto, 128898943Sluigi fs->flow_mask.src_ip, fs->flow_mask.src_port, 128998943Sluigi fs->flow_mask.dst_ip, fs->flow_mask.dst_port); 129098943Sluigi if (fs->rq_elements == 0) 129198943Sluigi return; 129298943Sluigi 129398943Sluigi printf("BKT Prot ___Source IP/port____ " 129498943Sluigi "____Dest. IP/port____ Tot_pkt/bytes Pkt/Byte Drp\n"); 129598943Sluigi if (do_sort != 0) 129698943Sluigi heapsort(q, fs->rq_elements, sizeof *q, sort_q); 129798943Sluigi for (l = 0; l < fs->rq_elements; l++) { 129898943Sluigi struct in_addr ina; 129998943Sluigi struct protoent *pe; 130098943Sluigi 130198943Sluigi ina.s_addr = htonl(q[l].id.src_ip); 130298943Sluigi printf("%3d ", q[l].hash_slot); 130398943Sluigi pe = getprotobynumber(q[l].id.proto); 130498943Sluigi if (pe) 130598943Sluigi printf("%-4s ", pe->p_name); 130698943Sluigi else 130798943Sluigi printf("%4u ", q[l].id.proto); 130898943Sluigi printf("%15s/%-5d ", 130998943Sluigi inet_ntoa(ina), q[l].id.src_port); 131098943Sluigi ina.s_addr = htonl(q[l].id.dst_ip); 131198943Sluigi printf("%15s/%-5d ", 131298943Sluigi inet_ntoa(ina), q[l].id.dst_port); 131398943Sluigi printf("%4qu %8qu %2u %4u %3u\n", 131498943Sluigi q[l].tot_pkts, q[l].tot_bytes, 131598943Sluigi q[l].len, q[l].len_bytes, q[l].drops); 131698943Sluigi if (verbose) 131798943Sluigi printf(" S %20qd F %20qd\n", 131898943Sluigi q[l].S, q[l].F); 131998943Sluigi } 132098943Sluigi} 132198943Sluigi 132298943Sluigistatic void 132398943Sluigiprint_flowset_parms(struct dn_flow_set *fs, char *prefix) 132498943Sluigi{ 132598943Sluigi int l; 132698943Sluigi char qs[30]; 132798943Sluigi char plr[30]; 132898943Sluigi char red[90]; /* Display RED parameters */ 132998943Sluigi 133098943Sluigi l = fs->qsize; 133198943Sluigi if (fs->flags_fs & DN_QSIZE_IS_BYTES) { 133298943Sluigi if (l >= 8192) 133398943Sluigi sprintf(qs, "%d KB", l / 1024); 133498943Sluigi else 133598943Sluigi sprintf(qs, "%d B", l); 133698943Sluigi } else 133798943Sluigi sprintf(qs, "%3d sl.", l); 133898943Sluigi if (fs->plr) 133998943Sluigi sprintf(plr, "plr %f", 1.0 * fs->plr / (double)(0x7fffffff)); 134098943Sluigi else 134198943Sluigi plr[0] = '\0'; 134298943Sluigi if (fs->flags_fs & DN_IS_RED) /* RED parameters */ 134398943Sluigi sprintf(red, 134498943Sluigi "\n\t %cRED w_q %f min_th %d max_th %d max_p %f", 134598943Sluigi (fs->flags_fs & DN_IS_GENTLE_RED) ? 'G' : ' ', 134698943Sluigi 1.0 * fs->w_q / (double)(1 << SCALE_RED), 134798943Sluigi SCALE_VAL(fs->min_th), 134898943Sluigi SCALE_VAL(fs->max_th), 134998943Sluigi 1.0 * fs->max_p / (double)(1 << SCALE_RED)); 135098943Sluigi else 135198943Sluigi sprintf(red, "droptail"); 135298943Sluigi 135398943Sluigi printf("%s %s%s %d queues (%d buckets) %s\n", 135498943Sluigi prefix, qs, plr, fs->rq_elements, fs->rq_size, red); 135598943Sluigi} 135698943Sluigi 135798943Sluigistatic void 135898943Sluigilist_pipes(void *data, int nbytes, int ac, char *av[]) 135998943Sluigi{ 136098943Sluigi u_long rulenum; 136198943Sluigi void *next = data; 136298943Sluigi struct dn_pipe *p = (struct dn_pipe *) data; 136398943Sluigi struct dn_flow_set *fs; 136498943Sluigi struct dn_flow_queue *q; 136598943Sluigi int l; 136698943Sluigi 136798943Sluigi if (ac > 0) 136898943Sluigi rulenum = strtoul(*av++, NULL, 10); 136998943Sluigi else 137098943Sluigi rulenum = 0; 137198943Sluigi for (; nbytes >= sizeof *p; p = (struct dn_pipe *)next) { 137298943Sluigi double b = p->bandwidth; 137398943Sluigi char buf[30]; 137498943Sluigi char prefix[80]; 137598943Sluigi 137698943Sluigi if (p->next != (struct dn_pipe *)DN_IS_PIPE) 137798943Sluigi break; /* done with pipes, now queues */ 137898943Sluigi 137998943Sluigi /* 138098943Sluigi * compute length, as pipe have variable size 138198943Sluigi */ 138298943Sluigi l = sizeof(*p) + p->fs.rq_elements * sizeof(*q); 138398943Sluigi next = (void *)p + l; 138498943Sluigi nbytes -= l; 138598943Sluigi 138698943Sluigi if (rulenum != 0 && rulenum != p->pipe_nr) 138798943Sluigi continue; 138898943Sluigi 138998943Sluigi /* 139098943Sluigi * Print rate (or clocking interface) 139198943Sluigi */ 139298943Sluigi if (p->if_name[0] != '\0') 139398943Sluigi sprintf(buf, "%s", p->if_name); 139498943Sluigi else if (b == 0) 139598943Sluigi sprintf(buf, "unlimited"); 139698943Sluigi else if (b >= 1000000) 139798943Sluigi sprintf(buf, "%7.3f Mbit/s", b/1000000); 139898943Sluigi else if (b >= 1000) 139998943Sluigi sprintf(buf, "%7.3f Kbit/s", b/1000); 140098943Sluigi else 140198943Sluigi sprintf(buf, "%7.3f bit/s ", b); 140298943Sluigi 140398943Sluigi sprintf(prefix, "%05d: %s %4d ms ", 140498943Sluigi p->pipe_nr, buf, p->delay); 140598943Sluigi print_flowset_parms(&(p->fs), prefix); 140698943Sluigi if (verbose) 140798943Sluigi printf(" V %20qd\n", p->V >> MY_M); 1408106505Smaxim 140998943Sluigi q = (struct dn_flow_queue *)(p+1); 141098943Sluigi list_queues(&(p->fs), q); 141198943Sluigi } 141298943Sluigi for (fs = next; nbytes >= sizeof *fs; fs = next) { 141398943Sluigi char prefix[80]; 141498943Sluigi 141598943Sluigi if (fs->next != (struct dn_flow_set *)DN_IS_QUEUE) 141698943Sluigi break; 141798943Sluigi l = sizeof(*fs) + fs->rq_elements * sizeof(*q); 141898943Sluigi next = (void *)fs + l; 141998943Sluigi nbytes -= l; 142098943Sluigi q = (struct dn_flow_queue *)(fs+1); 142198943Sluigi sprintf(prefix, "q%05d: weight %d pipe %d ", 142298943Sluigi fs->fs_nr, fs->weight, fs->parent_nr); 142398943Sluigi print_flowset_parms(fs, prefix); 142498943Sluigi list_queues(fs, q); 142598943Sluigi } 142698943Sluigi} 142798943Sluigi 1428101978Sluigi/* 1429101978Sluigi * This one handles all set-related commands 1430101978Sluigi * ipfw set { show | enable | disable } 1431101978Sluigi * ipfw set swap X Y 1432101978Sluigi * ipfw set move X to Y 1433101978Sluigi * ipfw set move rule X to Y 1434101978Sluigi */ 143598943Sluigistatic void 1436101978Sluigisets_handler(int ac, char *av[]) 1437101978Sluigi{ 1438101978Sluigi u_int32_t set_disable, masks[2]; 1439101978Sluigi int i, nbytes; 1440101978Sluigi u_int16_t rulenum; 1441101978Sluigi u_int8_t cmd, new_set; 1442101978Sluigi 1443101978Sluigi ac--; 1444101978Sluigi av++; 1445101978Sluigi 1446101978Sluigi if (!ac) 1447101978Sluigi errx(EX_USAGE, "set needs command"); 1448101978Sluigi if (!strncmp(*av, "show", strlen(*av)) ) { 1449101978Sluigi void *data; 1450101978Sluigi char *msg; 1451101978Sluigi 1452101978Sluigi nbytes = sizeof(struct ip_fw); 1453101978Sluigi if ((data = malloc(nbytes)) == NULL) 1454101978Sluigi err(EX_OSERR, "malloc"); 1455101978Sluigi if (getsockopt(s, IPPROTO_IP, IP_FW_GET, data, &nbytes) < 0) 1456101978Sluigi err(EX_OSERR, "getsockopt(IP_FW_GET)"); 1457105887Smux set_disable = ((struct ip_fw *)data)->set_disable; 1458101978Sluigi 1459101978Sluigi for (i = 0, msg = "disable" ; i < 31; i++) 1460101978Sluigi if ( (set_disable & (1<<i))) { 1461101978Sluigi printf("%s %d", msg, i); 1462101978Sluigi msg = ""; 1463101978Sluigi } 1464101978Sluigi msg = (set_disable) ? " enable" : "enable"; 1465101978Sluigi for (i = 0; i < 31; i++) 1466101978Sluigi if ( !(set_disable & (1<<i))) { 1467101978Sluigi printf("%s %d", msg, i); 1468101978Sluigi msg = ""; 1469101978Sluigi } 1470101978Sluigi printf("\n"); 1471101978Sluigi } else if (!strncmp(*av, "swap", strlen(*av))) { 1472101978Sluigi ac--; av++; 1473101978Sluigi if (ac != 2) 1474101978Sluigi errx(EX_USAGE, "set swap needs 2 set numbers\n"); 1475101978Sluigi rulenum = atoi(av[0]); 1476101978Sluigi new_set = atoi(av[1]); 1477101978Sluigi if (!isdigit(*(av[0])) || rulenum > 30) 1478101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[0]); 1479101978Sluigi if (!isdigit(*(av[1])) || new_set > 30) 1480101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[1]); 1481101978Sluigi masks[0] = (4 << 24) | (new_set << 16) | (rulenum); 1482101978Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, 1483101978Sluigi masks, sizeof(u_int32_t)); 1484101978Sluigi } else if (!strncmp(*av, "move", strlen(*av))) { 1485101978Sluigi ac--; av++; 1486101978Sluigi if (ac && !strncmp(*av, "rule", strlen(*av))) { 1487101978Sluigi cmd = 2; 1488101978Sluigi ac--; av++; 1489101978Sluigi } else 1490101978Sluigi cmd = 3; 1491101978Sluigi if (ac != 3 || strncmp(av[1], "to", strlen(*av))) 1492101978Sluigi errx(EX_USAGE, "syntax: set move [rule] X to Y\n"); 1493101978Sluigi rulenum = atoi(av[0]); 1494101978Sluigi new_set = atoi(av[2]); 1495101978Sluigi if (!isdigit(*(av[0])) || (cmd == 3 && rulenum > 30) || 1496101978Sluigi (cmd == 2 && rulenum == 65535) ) 1497101978Sluigi errx(EX_DATAERR, "invalid source number %s\n", av[0]); 1498101978Sluigi if (!isdigit(*(av[2])) || new_set > 30) 1499101978Sluigi errx(EX_DATAERR, "invalid dest. set %s\n", av[1]); 1500101978Sluigi masks[0] = (cmd << 24) | (new_set << 16) | (rulenum); 1501101978Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, 1502101978Sluigi masks, sizeof(u_int32_t)); 1503101978Sluigi } else if (!strncmp(*av, "disable", strlen(*av)) || 1504101978Sluigi !strncmp(*av, "enable", strlen(*av)) ) { 1505101978Sluigi int which = !strncmp(*av, "enable", strlen(*av)) ? 1 : 0; 1506101978Sluigi 1507101978Sluigi ac--; av++; 1508101978Sluigi masks[0] = masks[1] = 0; 1509101978Sluigi 1510101978Sluigi while (ac) { 1511101978Sluigi if (isdigit(**av)) { 1512101978Sluigi i = atoi(*av); 1513101978Sluigi if (i < 0 || i > 30) 1514101978Sluigi errx(EX_DATAERR, 1515101978Sluigi "invalid set number %d\n", i); 1516101978Sluigi masks[which] |= (1<<i); 1517101978Sluigi } else if (!strncmp(*av, "disable", strlen(*av))) 1518101978Sluigi which = 0; 1519101978Sluigi else if (!strncmp(*av, "enable", strlen(*av))) 1520101978Sluigi which = 1; 1521101978Sluigi else 1522101978Sluigi errx(EX_DATAERR, 1523101978Sluigi "invalid set command %s\n", *av); 1524101978Sluigi av++; ac--; 1525101978Sluigi } 1526101978Sluigi if ( (masks[0] & masks[1]) != 0 ) 1527101978Sluigi errx(EX_DATAERR, 1528101978Sluigi "cannot enable and disable the same set\n"); 1529101978Sluigi 1530101978Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, masks, sizeof(masks)); 1531101978Sluigi if (i) 1532101978Sluigi warn("set enable/disable: setsockopt(IP_FW_DEL)"); 1533101978Sluigi } else 1534101978Sluigi errx(EX_USAGE, "invalid set command %s\n", *av); 1535101978Sluigi} 1536101978Sluigi 1537101978Sluigistatic void 1538109126Sdillonsysctl_handler(int ac, char *av[], int which) 1539109126Sdillon{ 1540109126Sdillon ac--; 1541109126Sdillon av++; 1542109126Sdillon 1543109126Sdillon if (*av == NULL) { 1544109126Sdillon warnx("missing keyword to enable/disable\n"); 1545109126Sdillon } else if (strncmp(*av, "firewall", strlen(*av)) == 0) { 1546109126Sdillon sysctlbyname("net.inet.ip.fw.enable", NULL, 0, &which, sizeof(which)); 1547109126Sdillon } else if (strncmp(*av, "one_pass", strlen(*av)) == 0) { 1548109126Sdillon sysctlbyname("net.inet.ip.fw.one_pass", NULL, 0, &which, sizeof(which)); 1549109126Sdillon } else if (strncmp(*av, "debug", strlen(*av)) == 0) { 1550109126Sdillon sysctlbyname("net.inet.ip.fw.debug", NULL, 0, &which, sizeof(which)); 1551109126Sdillon } else if (strncmp(*av, "verbose", strlen(*av)) == 0) { 1552109126Sdillon sysctlbyname("net.inet.ip.fw.verbose", NULL, 0, &which, sizeof(which)); 1553109126Sdillon } else if (strncmp(*av, "dyn_keepalive", strlen(*av)) == 0) { 1554109126Sdillon sysctlbyname("net.inet.ip.fw.dyn_keepalive", NULL, 0, &which, sizeof(which)); 1555109126Sdillon } else { 1556109126Sdillon warnx("unrecognize enable/disable keyword: %s\n", *av); 1557109126Sdillon } 1558109126Sdillon} 1559109126Sdillon 1560109126Sdillonstatic void 156198943Sluigilist(int ac, char *av[]) 156298943Sluigi{ 156398943Sluigi struct ip_fw *r; 156498943Sluigi ipfw_dyn_rule *dynrules, *d; 156598943Sluigi 156698943Sluigi void *lim, *data = NULL; 1567112189Smaxim int bcwidth, n, nbytes, nstat, ndyn, pcwidth, width; 156898943Sluigi int exitval = EX_OK; 156998943Sluigi int lac; 157098943Sluigi char **lav; 157198943Sluigi u_long rnum; 157298943Sluigi char *endptr; 157398943Sluigi int seen = 0; 157498943Sluigi 157598943Sluigi const int ocmd = do_pipe ? IP_DUMMYNET_GET : IP_FW_GET; 157698943Sluigi int nalloc = 1024; /* start somewhere... */ 157798943Sluigi 157898943Sluigi ac--; 157998943Sluigi av++; 158098943Sluigi 158198943Sluigi /* get rules or pipes from kernel, resizing array as necessary */ 158298943Sluigi nbytes = nalloc; 158398943Sluigi 158498943Sluigi while (nbytes >= nalloc) { 158598943Sluigi nalloc = nalloc * 2 + 200; 158698943Sluigi nbytes = nalloc; 158798943Sluigi if ((data = realloc(data, nbytes)) == NULL) 158898943Sluigi err(EX_OSERR, "realloc"); 158998943Sluigi if (getsockopt(s, IPPROTO_IP, ocmd, data, &nbytes) < 0) 159098943Sluigi err(EX_OSERR, "getsockopt(IP_%s_GET)", 159198943Sluigi do_pipe ? "DUMMYNET" : "FW"); 159298943Sluigi } 159398943Sluigi 159498943Sluigi if (do_pipe) { 159598943Sluigi list_pipes(data, nbytes, ac, av); 159698943Sluigi goto done; 159798943Sluigi } 159898943Sluigi 159998943Sluigi /* 160098943Sluigi * Count static rules. They have variable size so we 160198943Sluigi * need to scan the list to count them. 160298943Sluigi */ 160398943Sluigi for (nstat = 1, r = data, lim = data + nbytes; 160498943Sluigi r->rulenum < 65535 && (void *)r < lim; 160598943Sluigi ++nstat, r = (void *)r + RULESIZE(r) ) 160698943Sluigi ; /* nothing */ 160798943Sluigi 160898943Sluigi /* 160998943Sluigi * Count dynamic rules. This is easier as they have 161098943Sluigi * fixed size. 161198943Sluigi */ 161298943Sluigi r = (void *)r + RULESIZE(r); 161398943Sluigi dynrules = (ipfw_dyn_rule *)r ; 161498943Sluigi n = (void *)r - data; 161598943Sluigi ndyn = (nbytes - n) / sizeof *dynrules; 161698943Sluigi 1617112189Smaxim /* if showing stats, figure out column widths ahead of time */ 1618112189Smaxim bcwidth = pcwidth = 0; 1619112189Smaxim if (do_acct) { 1620112189Smaxim for (n = 0, r = data; n < nstat; 1621112189Smaxim n++, r = (void *)r + RULESIZE(r)) { 1622112189Smaxim /* packet counter */ 1623112189Smaxim width = snprintf(NULL, 0, "%llu", r->pcnt); 1624112189Smaxim if (width > pcwidth) 1625112189Smaxim pcwidth = width; 1626112189Smaxim 1627112189Smaxim /* byte counter */ 1628112189Smaxim width = snprintf(NULL, 0, "%llu", r->bcnt); 1629112189Smaxim if (width > bcwidth) 1630112189Smaxim bcwidth = width; 1631112189Smaxim } 1632112189Smaxim } 1633112189Smaxim if (do_dynamic && ndyn) { 1634112189Smaxim for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1635112189Smaxim width = snprintf(NULL, 0, "%llu", d->pcnt); 1636112189Smaxim if (width > pcwidth) 1637112189Smaxim pcwidth = width; 1638112189Smaxim 1639112189Smaxim width = snprintf(NULL, 0, "%llu", d->bcnt); 1640112189Smaxim if (width > bcwidth) 1641112189Smaxim bcwidth = width; 1642112189Smaxim } 1643112189Smaxim } 164498943Sluigi /* if no rule numbers were specified, list all rules */ 164598943Sluigi if (ac == 0) { 164698943Sluigi for (n = 0, r = data; n < nstat; 164798943Sluigi n++, r = (void *)r + RULESIZE(r) ) 1648112189Smaxim show_ipfw(r, pcwidth, bcwidth); 164998943Sluigi 165098943Sluigi if (do_dynamic && ndyn) { 165198943Sluigi printf("## Dynamic rules (%d):\n", ndyn); 165298943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) 1653112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 165498943Sluigi } 165598943Sluigi goto done; 165698943Sluigi } 165798943Sluigi 165898943Sluigi /* display specific rules requested on command line */ 165998943Sluigi 166098943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 166198943Sluigi /* convert command line rule # */ 166298943Sluigi rnum = strtoul(*lav++, &endptr, 10); 166398943Sluigi if (*endptr) { 166498943Sluigi exitval = EX_USAGE; 166598943Sluigi warnx("invalid rule number: %s", *(lav - 1)); 166698943Sluigi continue; 166798943Sluigi } 166898943Sluigi for (n = seen = 0, r = data; n < nstat; 166998943Sluigi n++, r = (void *)r + RULESIZE(r) ) { 167098943Sluigi if (r->rulenum > rnum) 167198943Sluigi break; 167298943Sluigi if (r->rulenum == rnum) { 1673112189Smaxim show_ipfw(r, pcwidth, bcwidth); 167498943Sluigi seen = 1; 167598943Sluigi } 167698943Sluigi } 167798943Sluigi if (!seen) { 167898943Sluigi /* give precedence to other error(s) */ 167998943Sluigi if (exitval == EX_OK) 168098943Sluigi exitval = EX_UNAVAILABLE; 168198943Sluigi warnx("rule %lu does not exist", rnum); 168298943Sluigi } 168398943Sluigi } 168498943Sluigi 168598943Sluigi if (do_dynamic && ndyn) { 168698943Sluigi printf("## Dynamic rules:\n"); 168798943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 168898943Sluigi rnum = strtoul(*lav++, &endptr, 10); 168998943Sluigi if (*endptr) 169098943Sluigi /* already warned */ 169198943Sluigi continue; 169298943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1693105887Smux if (d->rulenum > rnum) 169498943Sluigi break; 1695105887Smux if (d->rulenum == rnum) 1696112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 169798943Sluigi } 169898943Sluigi } 169998943Sluigi } 170098943Sluigi 170198943Sluigi ac = 0; 170298943Sluigi 170398943Sluigidone: 170498943Sluigi free(data); 170598943Sluigi 170698943Sluigi if (exitval != EX_OK) 170798943Sluigi exit(exitval); 170898943Sluigi} 170998943Sluigi 171098943Sluigistatic void 171198943Sluigishow_usage(void) 171298943Sluigi{ 171398943Sluigi fprintf(stderr, "usage: ipfw [options]\n" 171498943Sluigi" add [number] rule\n" 171598943Sluigi" pipe number config [pipeconfig]\n" 171698943Sluigi" queue number config [queueconfig]\n" 171798943Sluigi" [pipe] flush\n" 171898943Sluigi" [pipe] delete number ...\n" 171998943Sluigi" [pipe] {list|show} [number ...]\n" 172098943Sluigi" {zero|resetlog} [number ...]\n" 172198943Sluigi"do \"ipfw -h\" or see ipfw manpage for details\n" 172298943Sluigi); 172398943Sluigi 172498943Sluigi exit(EX_USAGE); 172598943Sluigi} 172698943Sluigi 172798943Sluigistatic void 172898943Sluigihelp(void) 172998943Sluigi{ 1730106505Smaxim 173198943Sluigi fprintf(stderr, "ipfw syntax summary:\n" 173298943Sluigi"ipfw add [N] [prob {0..1}] ACTION [log [logamount N]] ADDR OPTIONS\n" 173398943Sluigi"ipfw {pipe|queue} N config BODY\n" 173498943Sluigi"ipfw [pipe] {zero|delete|show} [N{,N}]\n" 173598943Sluigi"\n" 173698943Sluigi"RULE: [1..] [PROB] BODY\n" 173798943Sluigi"RULENUM: INTEGER(1..65534)\n" 173898943Sluigi"PROB: prob REAL(0..1)\n" 173998943Sluigi"BODY: check-state [LOG] (no body) |\n" 174098943Sluigi" ACTION [LOG] MATCH_ADDR [OPTION_LIST]\n" 174198943Sluigi"ACTION: check-state | allow | count | deny | reject | skipto N |\n" 174298943Sluigi" {divert|tee} PORT | forward ADDR | pipe N | queue N\n" 174398943Sluigi"ADDR: [ MAC dst src ether_type ] \n" 174498943Sluigi" [ from IPLIST [ PORT ] to IPLIST [ PORTLIST ] ]\n" 174598943Sluigi"IPLIST: IPADDR | ( IPADDR or ... or IPADDR )\n" 174698943Sluigi"IPADDR: [not] { any | me | ip | ip/bits | ip:mask | ip/bits{x,y,z} }\n" 174798943Sluigi"OPTION_LIST: OPTION [,OPTION_LIST]\n" 174898943Sluigi); 174998943Sluigiexit(0); 175098943Sluigi} 175198943Sluigi 175298943Sluigi 175398943Sluigistatic int 175498943Sluigilookup_host (char *host, struct in_addr *ipaddr) 175598943Sluigi{ 175698943Sluigi struct hostent *he; 175798943Sluigi 175898943Sluigi if (!inet_aton(host, ipaddr)) { 175998943Sluigi if ((he = gethostbyname(host)) == NULL) 176098943Sluigi return(-1); 176198943Sluigi *ipaddr = *(struct in_addr *)he->h_addr_list[0]; 176298943Sluigi } 176398943Sluigi return(0); 176498943Sluigi} 176598943Sluigi 176698943Sluigi/* 176798943Sluigi * fills the addr and mask fields in the instruction as appropriate from av. 176898943Sluigi * Update length as appropriate. 176998943Sluigi * The following formats are allowed: 177098943Sluigi * any matches any IP. Actually returns an empty instruction. 177198943Sluigi * me returns O_IP_*_ME 177298943Sluigi * 1.2.3.4 single IP address 177398943Sluigi * 1.2.3.4:5.6.7.8 address:mask 177498943Sluigi * 1.2.3.4/24 address/mask 177598943Sluigi * 1.2.3.4/26{1,6,5,4,23} set of addresses in a subnet 177698943Sluigi */ 177798943Sluigistatic void 177898943Sluigifill_ip(ipfw_insn_ip *cmd, char *av) 177998943Sluigi{ 178098943Sluigi char *p = 0, md = 0; 178198943Sluigi u_int32_t i; 178298943Sluigi 178398943Sluigi cmd->o.len &= ~F_LEN_MASK; /* zero len */ 178498943Sluigi 178598943Sluigi if (!strncmp(av, "any", strlen(av))) 178698943Sluigi return; 178798943Sluigi 178898943Sluigi if (!strncmp(av, "me", strlen(av))) { 178998943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn); 179098943Sluigi return; 179198943Sluigi } 179298943Sluigi 179398943Sluigi p = strchr(av, '/'); 179498943Sluigi if (!p) 179598943Sluigi p = strchr(av, ':'); 179698943Sluigi if (p) { 179798943Sluigi md = *p; 179898943Sluigi *p++ = '\0'; 179998943Sluigi } 180098943Sluigi 180198943Sluigi if (lookup_host(av, &cmd->addr) != 0) 180298943Sluigi errx(EX_NOHOST, "hostname ``%s'' unknown", av); 180398943Sluigi switch (md) { 180498943Sluigi case ':': 180598943Sluigi if (!inet_aton(p, &cmd->mask)) 180698943Sluigi errx(EX_DATAERR, "bad netmask ``%s''", p); 180798943Sluigi break; 180898943Sluigi case '/': 180998943Sluigi i = atoi(p); 181098943Sluigi if (i == 0) 181198943Sluigi cmd->mask.s_addr = htonl(0); 181298943Sluigi else if (i > 32) 181398943Sluigi errx(EX_DATAERR, "bad width ``%s''", p); 181498943Sluigi else 181598943Sluigi cmd->mask.s_addr = htonl(~0 << (32 - i)); 181698943Sluigi break; 181798943Sluigi default: 181898943Sluigi cmd->mask.s_addr = htonl(~0); 181998943Sluigi break; 182098943Sluigi } 182198943Sluigi cmd->addr.s_addr &= cmd->mask.s_addr; 182298943Sluigi /* 182398943Sluigi * now look if we have a set of addresses. They are stored as follows: 182498943Sluigi * arg1 is the set size (powers of 2, 2..256) 182598943Sluigi * addr is the base address IN HOST FORMAT 182698943Sluigi * mask.. is an array of u_int32_t with bits set. 182798943Sluigi */ 182898943Sluigi if (p) 182998943Sluigi p = strchr(p, '{'); 183098943Sluigi if (p) { /* fetch addresses */ 183198943Sluigi u_int32_t *d; 183298943Sluigi int low, high; 183398943Sluigi int i = contigmask((u_char *)&(cmd->mask), 32); 183498943Sluigi 183598943Sluigi if (i < 24 || i > 31) { 183698943Sluigi fprintf(stderr, "invalid set with mask %d\n", 183798943Sluigi i); 183898943Sluigi exit(0); 183998943Sluigi } 184098943Sluigi cmd->o.arg1 = 1<<(32-i); 184198943Sluigi cmd->addr.s_addr = ntohl(cmd->addr.s_addr); 184298943Sluigi d = (u_int32_t *)&cmd->mask; 184398943Sluigi cmd->o.opcode = O_IP_DST_SET; /* default */ 184498943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32) + (cmd->o.arg1+31)/32; 1845101117Sluigi for (i = 0; i < (cmd->o.arg1+31)/32 ; i++) 184698943Sluigi d[i] = 0; /* clear masks */ 184798943Sluigi 184898943Sluigi av = p+1; 184998943Sluigi low = cmd->addr.s_addr & 0xff; 185098943Sluigi high = low + cmd->o.arg1 - 1; 185198943Sluigi while (isdigit(*av)) { 185298943Sluigi char *s; 185398943Sluigi u_int16_t a = strtol(av, &s, 0); 185498943Sluigi 185598943Sluigi if (s == av) /* no parameter */ 185698943Sluigi break; 185798943Sluigi if (a < low || a > high) { 185898943Sluigi fprintf(stderr, "addr %d out of range [%d-%d]\n", 185998943Sluigi a, low, high); 186098943Sluigi exit(0); 186198943Sluigi } 186298943Sluigi a -= low; 186398943Sluigi d[ a/32] |= 1<<(a & 31); 186498943Sluigi if (*s != ',') 186598943Sluigi break; 186698943Sluigi av = s+1; 186798943Sluigi } 186898943Sluigi return; 186998943Sluigi } 187098943Sluigi 187198943Sluigi if (cmd->mask.s_addr == 0) { /* any */ 187298943Sluigi if (cmd->o.len & F_NOT) 187398943Sluigi errx(EX_DATAERR, "not any never matches"); 187498943Sluigi else /* useless, nuke it */ 187598943Sluigi return; 187698943Sluigi } else if (cmd->mask.s_addr == IP_MASK_ALL) /* one IP */ 187798943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 187898943Sluigi else /* addr/mask */ 187998943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_ip); 188098943Sluigi} 188198943Sluigi 188298943Sluigi 188398943Sluigi/* 188498943Sluigi * helper function to process a set of flags and set bits in the 188598943Sluigi * appropriate masks. 188698943Sluigi */ 188798943Sluigistatic void 188898943Sluigifill_flags(ipfw_insn *cmd, enum ipfw_opcodes opcode, 188998943Sluigi struct _s_x *flags, char *p) 189098943Sluigi{ 189198943Sluigi u_int8_t set=0, clear=0; 189298943Sluigi 189398943Sluigi while (p && *p) { 189498943Sluigi char *q; /* points to the separator */ 189598943Sluigi int val; 189698943Sluigi u_int8_t *which; /* mask we are working on */ 189798943Sluigi 189898943Sluigi if (*p == '!') { 189998943Sluigi p++; 190098943Sluigi which = &clear; 190198943Sluigi } else 190298943Sluigi which = &set; 190398943Sluigi q = strchr(p, ','); 190498943Sluigi if (q) 190598943Sluigi *q++ = '\0'; 190698943Sluigi val = match_token(flags, p); 190798943Sluigi if (val <= 0) 190898943Sluigi errx(EX_DATAERR, "invalid flag %s", p); 190998943Sluigi *which |= (u_int8_t)val; 191098943Sluigi p = q; 191198943Sluigi } 191298943Sluigi cmd->opcode = opcode; 191398943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | 1; 191498943Sluigi cmd->arg1 = (set & 0xff) | ( (clear & 0xff) << 8); 191598943Sluigi} 191698943Sluigi 191798943Sluigi 191898943Sluigistatic void 191998943Sluigidelete(int ac, char *av[]) 192098943Sluigi{ 1921101978Sluigi u_int32_t rulenum; 192298943Sluigi struct dn_pipe pipe; 192398943Sluigi int i; 192498943Sluigi int exitval = EX_OK; 1925101628Sluigi int do_set = 0; 192698943Sluigi 192798943Sluigi memset(&pipe, 0, sizeof pipe); 192898943Sluigi 192998943Sluigi av++; ac--; 1930101641Sluigi if (ac > 0 && !strncmp(*av, "set", strlen(*av))) { 1931101978Sluigi do_set = 1; /* delete set */ 1932101628Sluigi ac--; av++; 1933101978Sluigi } 193498943Sluigi 193598943Sluigi /* Rule number */ 193698943Sluigi while (ac && isdigit(**av)) { 193798943Sluigi i = atoi(*av); av++; ac--; 193898943Sluigi if (do_pipe) { 193998943Sluigi if (do_pipe == 1) 194098943Sluigi pipe.pipe_nr = i; 194198943Sluigi else 194298943Sluigi pipe.fs.fs_nr = i; 194398943Sluigi i = setsockopt(s, IPPROTO_IP, IP_DUMMYNET_DEL, 194498943Sluigi &pipe, sizeof pipe); 194598943Sluigi if (i) { 194698943Sluigi exitval = 1; 194798943Sluigi warn("rule %u: setsockopt(IP_DUMMYNET_DEL)", 194898943Sluigi do_pipe == 1 ? pipe.pipe_nr : 194998943Sluigi pipe.fs.fs_nr); 195098943Sluigi } 195198943Sluigi } else { 1952101978Sluigi rulenum = (i & 0xffff) | (do_set << 24); 195398943Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, &rulenum, 195498943Sluigi sizeof rulenum); 195598943Sluigi if (i) { 195698943Sluigi exitval = EX_UNAVAILABLE; 195798943Sluigi warn("rule %u: setsockopt(IP_FW_DEL)", 195898943Sluigi rulenum); 195998943Sluigi } 196098943Sluigi } 196198943Sluigi } 196298943Sluigi if (exitval != EX_OK) 196398943Sluigi exit(exitval); 196498943Sluigi} 196598943Sluigi 196698943Sluigi 196798943Sluigi/* 196898943Sluigi * fill the interface structure. We do not check the name as we can 196998943Sluigi * create interfaces dynamically, so checking them at insert time 197098943Sluigi * makes relatively little sense. 197198943Sluigi * A '*' following the name means any unit. 197298943Sluigi */ 197398943Sluigistatic void 197498943Sluigifill_iface(ipfw_insn_if *cmd, char *arg) 197598943Sluigi{ 197698943Sluigi cmd->name[0] = '\0'; 197798943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_if); 197898943Sluigi 197998943Sluigi /* Parse the interface or address */ 198098943Sluigi if (!strcmp(arg, "any")) 198198943Sluigi cmd->o.len = 0; /* effectively ignore this command */ 198298943Sluigi else if (!isdigit(*arg)) { 198398943Sluigi char *q; 198498943Sluigi 198598943Sluigi strncpy(cmd->name, arg, sizeof(cmd->name)); 198698943Sluigi cmd->name[sizeof(cmd->name) - 1] = '\0'; 198798943Sluigi /* find first digit or wildcard */ 198898943Sluigi for (q = cmd->name; *q && !isdigit(*q) && *q != '*'; q++) 198998943Sluigi continue; 199098943Sluigi cmd->p.unit = (*q == '*') ? -1 : atoi(q); 199198943Sluigi *q = '\0'; 199298943Sluigi } else if (!inet_aton(arg, &cmd->p.ip)) 199398943Sluigi errx(EX_DATAERR, "bad ip address ``%s''", arg); 199498943Sluigi} 199598943Sluigi 199698943Sluigi/* 199798943Sluigi * the following macro returns an error message if we run out of 199898943Sluigi * arguments. 199998943Sluigi */ 200098943Sluigi#define NEED1(msg) {if (!ac) errx(EX_USAGE, msg);} 200198943Sluigi 200298943Sluigistatic void 200398943Sluigiconfig_pipe(int ac, char **av) 200498943Sluigi{ 200598943Sluigi struct dn_pipe pipe; 200698943Sluigi int i; 200798943Sluigi char *end; 200898943Sluigi u_int32_t a; 200998943Sluigi void *par = NULL; 201098943Sluigi 201198943Sluigi memset(&pipe, 0, sizeof pipe); 201298943Sluigi 201398943Sluigi av++; ac--; 201498943Sluigi /* Pipe number */ 201598943Sluigi if (ac && isdigit(**av)) { 201698943Sluigi i = atoi(*av); av++; ac--; 201798943Sluigi if (do_pipe == 1) 201898943Sluigi pipe.pipe_nr = i; 201998943Sluigi else 202098943Sluigi pipe.fs.fs_nr = i; 202198943Sluigi } 202299475Sluigi while (ac > 0) { 202398943Sluigi double d; 202498943Sluigi int tok = match_token(dummynet_params, *av); 202598943Sluigi ac--; av++; 202698943Sluigi 202798943Sluigi switch(tok) { 2028101978Sluigi case TOK_NOERROR: 2029101978Sluigi pipe.fs.flags_fs |= DN_NOERROR; 2030101978Sluigi break; 2031101978Sluigi 203298943Sluigi case TOK_PLR: 203398943Sluigi NEED1("plr needs argument 0..1\n"); 203498943Sluigi d = strtod(av[0], NULL); 203598943Sluigi if (d > 1) 203698943Sluigi d = 1; 203798943Sluigi else if (d < 0) 203898943Sluigi d = 0; 203998943Sluigi pipe.fs.plr = (int)(d*0x7fffffff); 204098943Sluigi ac--; av++; 204198943Sluigi break; 204298943Sluigi 204398943Sluigi case TOK_QUEUE: 204498943Sluigi NEED1("queue needs queue size\n"); 204598943Sluigi end = NULL; 204698943Sluigi pipe.fs.qsize = strtoul(av[0], &end, 0); 204798943Sluigi if (*end == 'K' || *end == 'k') { 204898943Sluigi pipe.fs.flags_fs |= DN_QSIZE_IS_BYTES; 204998943Sluigi pipe.fs.qsize *= 1024; 205098943Sluigi } else if (*end == 'B' || !strncmp(end, "by", 2)) { 205198943Sluigi pipe.fs.flags_fs |= DN_QSIZE_IS_BYTES; 205298943Sluigi } 205398943Sluigi ac--; av++; 205498943Sluigi break; 205598943Sluigi 205698943Sluigi case TOK_BUCKETS: 205798943Sluigi NEED1("buckets needs argument\n"); 205898943Sluigi pipe.fs.rq_size = strtoul(av[0], NULL, 0); 205998943Sluigi ac--; av++; 206098943Sluigi break; 206198943Sluigi 206298943Sluigi case TOK_MASK: 206398943Sluigi NEED1("mask needs mask specifier\n"); 206498943Sluigi /* 206598943Sluigi * per-flow queue, mask is dst_ip, dst_port, 206698943Sluigi * src_ip, src_port, proto measured in bits 206798943Sluigi */ 206898943Sluigi par = NULL; 206998943Sluigi 207098943Sluigi pipe.fs.flow_mask.dst_ip = 0; 207198943Sluigi pipe.fs.flow_mask.src_ip = 0; 207298943Sluigi pipe.fs.flow_mask.dst_port = 0; 207398943Sluigi pipe.fs.flow_mask.src_port = 0; 207498943Sluigi pipe.fs.flow_mask.proto = 0; 207598943Sluigi end = NULL; 207698943Sluigi 207798943Sluigi while (ac >= 1) { 207898943Sluigi u_int32_t *p32 = NULL; 207998943Sluigi u_int16_t *p16 = NULL; 208098943Sluigi 208198943Sluigi tok = match_token(dummynet_params, *av); 208298943Sluigi ac--; av++; 208398943Sluigi switch(tok) { 208498943Sluigi case TOK_ALL: 208598943Sluigi /* 208698943Sluigi * special case, all bits significant 208798943Sluigi */ 208898943Sluigi pipe.fs.flow_mask.dst_ip = ~0; 208998943Sluigi pipe.fs.flow_mask.src_ip = ~0; 209098943Sluigi pipe.fs.flow_mask.dst_port = ~0; 209198943Sluigi pipe.fs.flow_mask.src_port = ~0; 209298943Sluigi pipe.fs.flow_mask.proto = ~0; 209398943Sluigi pipe.fs.flags_fs |= DN_HAVE_FLOW_MASK; 209498943Sluigi goto end_mask; 209598943Sluigi 209698943Sluigi case TOK_DSTIP: 209798943Sluigi p32 = &pipe.fs.flow_mask.dst_ip; 209898943Sluigi break; 209998943Sluigi 210098943Sluigi case TOK_SRCIP: 210198943Sluigi p32 = &pipe.fs.flow_mask.src_ip; 210298943Sluigi break; 210398943Sluigi 210498943Sluigi case TOK_DSTPORT: 210598943Sluigi p16 = &pipe.fs.flow_mask.dst_port; 210698943Sluigi break; 210798943Sluigi 210898943Sluigi case TOK_SRCPORT: 210998943Sluigi p16 = &pipe.fs.flow_mask.src_port; 211098943Sluigi break; 211198943Sluigi 211298943Sluigi case TOK_PROTO: 211398943Sluigi break; 211498943Sluigi 211598943Sluigi default: 211698943Sluigi ac++; av--; /* backtrack */ 211798943Sluigi goto end_mask; 211898943Sluigi } 211998943Sluigi if (ac < 1) 212098943Sluigi errx(EX_USAGE, "mask: value missing"); 212198943Sluigi if (*av[0] == '/') { 212298943Sluigi a = strtoul(av[0]+1, &end, 0); 212398943Sluigi a = (a == 32) ? ~0 : (1 << a) - 1; 2124106505Smaxim } else 212599909Sluigi a = strtoul(av[0], &end, 0); 212698943Sluigi if (p32 != NULL) 212798943Sluigi *p32 = a; 212898943Sluigi else if (p16 != NULL) { 212998943Sluigi if (a > 65535) 213098943Sluigi errx(EX_DATAERR, 213198943Sluigi "mask: must be 16 bit"); 213298943Sluigi *p16 = (u_int16_t)a; 213398943Sluigi } else { 213498943Sluigi if (a > 255) 213598943Sluigi errx(EX_DATAERR, 213698943Sluigi "mask: must be 8 bit"); 213798943Sluigi pipe.fs.flow_mask.proto = (u_int8_t)a; 213898943Sluigi } 213998943Sluigi if (a != 0) 214098943Sluigi pipe.fs.flags_fs |= DN_HAVE_FLOW_MASK; 214198943Sluigi ac--; av++; 214298943Sluigi } /* end while, config masks */ 214398943Sluigiend_mask: 214498943Sluigi break; 214598943Sluigi 214698943Sluigi case TOK_RED: 214798943Sluigi case TOK_GRED: 214898943Sluigi NEED1("red/gred needs w_q/min_th/max_th/max_p\n"); 214998943Sluigi pipe.fs.flags_fs |= DN_IS_RED; 215098943Sluigi if (tok == TOK_GRED) 215198943Sluigi pipe.fs.flags_fs |= DN_IS_GENTLE_RED; 215298943Sluigi /* 215398943Sluigi * the format for parameters is w_q/min_th/max_th/max_p 215498943Sluigi */ 215598943Sluigi if ((end = strsep(&av[0], "/"))) { 215698943Sluigi double w_q = strtod(end, NULL); 215798943Sluigi if (w_q > 1 || w_q <= 0) 215898943Sluigi errx(EX_DATAERR, "0 < w_q <= 1"); 215998943Sluigi pipe.fs.w_q = (int) (w_q * (1 << SCALE_RED)); 216098943Sluigi } 216198943Sluigi if ((end = strsep(&av[0], "/"))) { 216298943Sluigi pipe.fs.min_th = strtoul(end, &end, 0); 216398943Sluigi if (*end == 'K' || *end == 'k') 216498943Sluigi pipe.fs.min_th *= 1024; 216598943Sluigi } 216698943Sluigi if ((end = strsep(&av[0], "/"))) { 216798943Sluigi pipe.fs.max_th = strtoul(end, &end, 0); 216898943Sluigi if (*end == 'K' || *end == 'k') 216998943Sluigi pipe.fs.max_th *= 1024; 217098943Sluigi } 217198943Sluigi if ((end = strsep(&av[0], "/"))) { 217298943Sluigi double max_p = strtod(end, NULL); 217398943Sluigi if (max_p > 1 || max_p <= 0) 217498943Sluigi errx(EX_DATAERR, "0 < max_p <= 1"); 217598943Sluigi pipe.fs.max_p = (int)(max_p * (1 << SCALE_RED)); 217698943Sluigi } 217798943Sluigi ac--; av++; 217898943Sluigi break; 217998943Sluigi 218098943Sluigi case TOK_DROPTAIL: 218198943Sluigi pipe.fs.flags_fs &= ~(DN_IS_RED|DN_IS_GENTLE_RED); 218298943Sluigi break; 2183106505Smaxim 218498943Sluigi case TOK_BW: 218598943Sluigi NEED1("bw needs bandwidth or interface\n"); 218698943Sluigi if (do_pipe != 1) 218798943Sluigi errx(EX_DATAERR, "bandwidth only valid for pipes"); 218898943Sluigi /* 218998943Sluigi * set clocking interface or bandwidth value 219098943Sluigi */ 219198943Sluigi if (av[0][0] >= 'a' && av[0][0] <= 'z') { 219298943Sluigi int l = sizeof(pipe.if_name)-1; 219398943Sluigi /* interface name */ 219498943Sluigi strncpy(pipe.if_name, av[0], l); 219598943Sluigi pipe.if_name[l] = '\0'; 219698943Sluigi pipe.bandwidth = 0; 219798943Sluigi } else { 219898943Sluigi pipe.if_name[0] = '\0'; 219998943Sluigi pipe.bandwidth = strtoul(av[0], &end, 0); 220098943Sluigi if (*end == 'K' || *end == 'k') { 220198943Sluigi end++; 220298943Sluigi pipe.bandwidth *= 1000; 220398943Sluigi } else if (*end == 'M') { 220498943Sluigi end++; 220598943Sluigi pipe.bandwidth *= 1000000; 220698943Sluigi } 220798943Sluigi if (*end == 'B' || !strncmp(end, "by", 2)) 220898943Sluigi pipe.bandwidth *= 8; 220998943Sluigi if (pipe.bandwidth < 0) 221098943Sluigi errx(EX_DATAERR, "bandwidth too large"); 221198943Sluigi } 221298943Sluigi ac--; av++; 221398943Sluigi break; 221498943Sluigi 221598943Sluigi case TOK_DELAY: 221698943Sluigi if (do_pipe != 1) 221798943Sluigi errx(EX_DATAERR, "delay only valid for pipes"); 221898943Sluigi NEED1("delay needs argument 0..10000ms\n"); 221998943Sluigi pipe.delay = strtoul(av[0], NULL, 0); 222098943Sluigi ac--; av++; 222198943Sluigi break; 222298943Sluigi 222398943Sluigi case TOK_WEIGHT: 222498943Sluigi if (do_pipe == 1) 222598943Sluigi errx(EX_DATAERR,"weight only valid for queues"); 222698943Sluigi NEED1("weight needs argument 0..100\n"); 222798943Sluigi pipe.fs.weight = strtoul(av[0], &end, 0); 222898943Sluigi ac--; av++; 222998943Sluigi break; 223098943Sluigi 223198943Sluigi case TOK_PIPE: 223298943Sluigi if (do_pipe == 1) 223398943Sluigi errx(EX_DATAERR,"pipe only valid for queues"); 223498943Sluigi NEED1("pipe needs pipe_number\n"); 223598943Sluigi pipe.fs.parent_nr = strtoul(av[0], &end, 0); 223698943Sluigi ac--; av++; 223798943Sluigi break; 223898943Sluigi 223998943Sluigi default: 224098943Sluigi errx(EX_DATAERR, "unrecognised option ``%s''", *av); 224198943Sluigi } 224298943Sluigi } 224398943Sluigi if (do_pipe == 1) { 224498943Sluigi if (pipe.pipe_nr == 0) 224598943Sluigi errx(EX_DATAERR, "pipe_nr must be > 0"); 224698943Sluigi if (pipe.delay > 10000) 224798943Sluigi errx(EX_DATAERR, "delay must be < 10000"); 224898943Sluigi } else { /* do_pipe == 2, queue */ 224998943Sluigi if (pipe.fs.parent_nr == 0) 225098943Sluigi errx(EX_DATAERR, "pipe must be > 0"); 225198943Sluigi if (pipe.fs.weight >100) 225298943Sluigi errx(EX_DATAERR, "weight must be <= 100"); 225398943Sluigi } 225498943Sluigi if (pipe.fs.flags_fs & DN_QSIZE_IS_BYTES) { 225598943Sluigi if (pipe.fs.qsize > 1024*1024) 225698943Sluigi errx(EX_DATAERR, "queue size must be < 1MB"); 225798943Sluigi } else { 225898943Sluigi if (pipe.fs.qsize > 100) 225998943Sluigi errx(EX_DATAERR, "2 <= queue size <= 100"); 226098943Sluigi } 226198943Sluigi if (pipe.fs.flags_fs & DN_IS_RED) { 226298943Sluigi size_t len; 226398943Sluigi int lookup_depth, avg_pkt_size; 226498943Sluigi double s, idle, weight, w_q; 226598943Sluigi struct clockinfo clock; 226698943Sluigi int t; 226798943Sluigi 226898943Sluigi if (pipe.fs.min_th >= pipe.fs.max_th) 226998943Sluigi errx(EX_DATAERR, "min_th %d must be < than max_th %d", 227098943Sluigi pipe.fs.min_th, pipe.fs.max_th); 227198943Sluigi if (pipe.fs.max_th == 0) 227298943Sluigi errx(EX_DATAERR, "max_th must be > 0"); 227398943Sluigi 227498943Sluigi len = sizeof(int); 227598943Sluigi if (sysctlbyname("net.inet.ip.dummynet.red_lookup_depth", 227698943Sluigi &lookup_depth, &len, NULL, 0) == -1) 227798943Sluigi 227898943Sluigi errx(1, "sysctlbyname(\"%s\")", 227998943Sluigi "net.inet.ip.dummynet.red_lookup_depth"); 228098943Sluigi if (lookup_depth == 0) 228198943Sluigi errx(EX_DATAERR, "net.inet.ip.dummynet.red_lookup_depth" 228298943Sluigi " must be greater than zero"); 228398943Sluigi 228498943Sluigi len = sizeof(int); 228598943Sluigi if (sysctlbyname("net.inet.ip.dummynet.red_avg_pkt_size", 228698943Sluigi &avg_pkt_size, &len, NULL, 0) == -1) 228798943Sluigi 228898943Sluigi errx(1, "sysctlbyname(\"%s\")", 228998943Sluigi "net.inet.ip.dummynet.red_avg_pkt_size"); 229098943Sluigi if (avg_pkt_size == 0) 229198943Sluigi errx(EX_DATAERR, 229298943Sluigi "net.inet.ip.dummynet.red_avg_pkt_size must" 229398943Sluigi " be greater than zero"); 229498943Sluigi 229598943Sluigi len = sizeof(struct clockinfo); 229698943Sluigi if (sysctlbyname("kern.clockrate", &clock, &len, NULL, 0) == -1) 229798943Sluigi errx(1, "sysctlbyname(\"%s\")", "kern.clockrate"); 229898943Sluigi 229998943Sluigi /* 230098943Sluigi * Ticks needed for sending a medium-sized packet. 230198943Sluigi * Unfortunately, when we are configuring a WF2Q+ queue, we 230298943Sluigi * do not have bandwidth information, because that is stored 230398943Sluigi * in the parent pipe, and also we have multiple queues 230498943Sluigi * competing for it. So we set s=0, which is not very 230598943Sluigi * correct. But on the other hand, why do we want RED with 230698943Sluigi * WF2Q+ ? 230798943Sluigi */ 230898943Sluigi if (pipe.bandwidth==0) /* this is a WF2Q+ queue */ 230998943Sluigi s = 0; 231098943Sluigi else 231198943Sluigi s = clock.hz * avg_pkt_size * 8 / pipe.bandwidth; 231298943Sluigi 231398943Sluigi /* 231498943Sluigi * max idle time (in ticks) before avg queue size becomes 0. 231598943Sluigi * NOTA: (3/w_q) is approx the value x so that 231698943Sluigi * (1-w_q)^x < 10^-3. 231798943Sluigi */ 231898943Sluigi w_q = ((double)pipe.fs.w_q) / (1 << SCALE_RED); 231998943Sluigi idle = s * 3. / w_q; 232098943Sluigi pipe.fs.lookup_step = (int)idle / lookup_depth; 232198943Sluigi if (!pipe.fs.lookup_step) 232298943Sluigi pipe.fs.lookup_step = 1; 232398943Sluigi weight = 1 - w_q; 232498943Sluigi for (t = pipe.fs.lookup_step; t > 0; --t) 232598943Sluigi weight *= weight; 232698943Sluigi pipe.fs.lookup_weight = (int)(weight * (1 << SCALE_RED)); 232798943Sluigi } 232898943Sluigi i = setsockopt(s, IPPROTO_IP, IP_DUMMYNET_CONFIGURE, &pipe, 232998943Sluigi sizeof pipe); 233098943Sluigi if (i) 233198943Sluigi err(1, "setsockopt(%s)", "IP_DUMMYNET_CONFIGURE"); 233298943Sluigi} 233398943Sluigi 233498943Sluigistatic void 233598943Sluigiget_mac_addr_mask(char *p, u_char *addr, u_char *mask) 233698943Sluigi{ 233798943Sluigi int i, l; 233898943Sluigi 233998943Sluigi for (i=0; i<6; i++) 234098943Sluigi addr[i] = mask[i] = 0; 234198943Sluigi if (!strcmp(p, "any")) 234298943Sluigi return; 234398943Sluigi 234498943Sluigi for (i=0; *p && i<6;i++, p++) { 234598943Sluigi addr[i] = strtol(p, &p, 16); 234698943Sluigi if (*p != ':') /* we start with the mask */ 234798943Sluigi break; 234898943Sluigi } 234998943Sluigi if (*p == '/') { /* mask len */ 235098943Sluigi l = strtol(p+1, &p, 0); 235198943Sluigi for (i=0; l>0; l -=8, i++) 235298943Sluigi mask[i] = (l >=8) ? 0xff : (~0) << (8-l); 235398943Sluigi } else if (*p == '&') { /* mask */ 235498943Sluigi for (i=0, p++; *p && i<6;i++, p++) { 235598943Sluigi mask[i] = strtol(p, &p, 16); 235698943Sluigi if (*p != ':') 235798943Sluigi break; 235898943Sluigi } 235998943Sluigi } else if (*p == '\0') { 236098943Sluigi for (i=0; i<6; i++) 236198943Sluigi mask[i] = 0xff; 236298943Sluigi } 236398943Sluigi for (i=0; i<6; i++) 236498943Sluigi addr[i] &= mask[i]; 236598943Sluigi} 236698943Sluigi 236798943Sluigi/* 236898943Sluigi * helper function, updates the pointer to cmd with the length 236998943Sluigi * of the current command, and also cleans up the first word of 237098943Sluigi * the new command in case it has been clobbered before. 237198943Sluigi */ 237298943Sluigistatic ipfw_insn * 237398943Sluiginext_cmd(ipfw_insn *cmd) 237498943Sluigi{ 237598943Sluigi cmd += F_LEN(cmd); 237698943Sluigi bzero(cmd, sizeof(*cmd)); 237798943Sluigi return cmd; 237898943Sluigi} 237998943Sluigi 238098943Sluigi/* 238198943Sluigi * A function to fill simple commands of size 1. 238298943Sluigi * Existing flags are preserved. 238398943Sluigi */ 238498943Sluigistatic void 238598943Sluigifill_cmd(ipfw_insn *cmd, enum ipfw_opcodes opcode, int flags, u_int16_t arg) 238698943Sluigi{ 238798943Sluigi cmd->opcode = opcode; 238898943Sluigi cmd->len = ((cmd->len | flags) & (F_NOT | F_OR)) | 1; 238998943Sluigi cmd->arg1 = arg; 239098943Sluigi} 239198943Sluigi 239298943Sluigi/* 239398943Sluigi * Fetch and add the MAC address and type, with masks. This generates one or 239498943Sluigi * two microinstructions, and returns the pointer to the last one. 239598943Sluigi */ 239698943Sluigistatic ipfw_insn * 239798943Sluigiadd_mac(ipfw_insn *cmd, int ac, char *av[]) 239898943Sluigi{ 2399102087Sluigi ipfw_insn_mac *mac; 240098943Sluigi 2401102087Sluigi if (ac < 2) 2402102098Sluigi errx(EX_DATAERR, "MAC dst src"); 240398943Sluigi 240498943Sluigi cmd->opcode = O_MACADDR2; 240598943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | F_INSN_SIZE(ipfw_insn_mac); 240698943Sluigi 240798943Sluigi mac = (ipfw_insn_mac *)cmd; 2408101978Sluigi get_mac_addr_mask(av[0], mac->addr, mac->mask); /* dst */ 240998943Sluigi get_mac_addr_mask(av[1], &(mac->addr[6]), &(mac->mask[6])); /* src */ 2410102087Sluigi return cmd; 2411102087Sluigi} 241298943Sluigi 2413102087Sluigistatic ipfw_insn * 2414102087Sluigiadd_mactype(ipfw_insn *cmd, int ac, char *av) 2415102087Sluigi{ 2416102087Sluigi if (ac < 1) 2417102087Sluigi errx(EX_DATAERR, "missing MAC type"); 2418102087Sluigi if (strcmp(av, "any") != 0) { /* we have a non-null type */ 2419102087Sluigi fill_newports((ipfw_insn_u16 *)cmd, av, IPPROTO_ETHERTYPE); 242098943Sluigi cmd->opcode = O_MAC_TYPE; 2421102087Sluigi return cmd; 2422102087Sluigi } else 2423102087Sluigi return NULL; 2424102087Sluigi} 242598943Sluigi 2426102087Sluigistatic ipfw_insn * 2427102087Sluigiadd_proto(ipfw_insn *cmd, char *av) 2428102087Sluigi{ 2429102087Sluigi struct protoent *pe; 2430102087Sluigi u_char proto = 0; 2431102087Sluigi 2432102087Sluigi if (!strncmp(av, "all", strlen(av))) 2433102087Sluigi ; /* same as "ip" */ 2434102087Sluigi else if ((proto = atoi(av)) > 0) 2435102087Sluigi ; /* all done! */ 2436102087Sluigi else if ((pe = getprotobyname(av)) != NULL) 2437102087Sluigi proto = pe->p_proto; 2438102087Sluigi else 2439102098Sluigi return NULL; 2440102087Sluigi if (proto != IPPROTO_IP) 2441102087Sluigi fill_cmd(cmd, O_PROTO, 0, proto); 244298943Sluigi return cmd; 244398943Sluigi} 244498943Sluigi 2445102087Sluigistatic ipfw_insn * 2446102087Sluigiadd_srcip(ipfw_insn *cmd, char *av) 2447102087Sluigi{ 2448102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2449102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2450102087Sluigi cmd->opcode = O_IP_SRC_SET; 2451102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2452102087Sluigi cmd->opcode = O_IP_SRC_ME; 2453102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2454102087Sluigi cmd->opcode = O_IP_SRC; 2455102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_ip)) /* addr/mask */ 2456102087Sluigi cmd->opcode = O_IP_SRC_MASK; 2457102087Sluigi return cmd; 2458102087Sluigi} 2459102087Sluigi 2460102087Sluigistatic ipfw_insn * 2461102087Sluigiadd_dstip(ipfw_insn *cmd, char *av) 2462102087Sluigi{ 2463102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2464102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2465102087Sluigi ; 2466102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2467102087Sluigi cmd->opcode = O_IP_DST_ME; 2468102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2469102087Sluigi cmd->opcode = O_IP_DST; 2470102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_ip)) /* addr/mask */ 2471102087Sluigi cmd->opcode = O_IP_DST_MASK; 2472102087Sluigi return cmd; 2473102087Sluigi} 2474102087Sluigi 2475102087Sluigistatic ipfw_insn * 2476102087Sluigiadd_ports(ipfw_insn *cmd, char *av, u_char proto, int opcode) 2477102087Sluigi{ 2478102087Sluigi if (!strncmp(av, "any", strlen(av))) { 2479102087Sluigi return NULL; 2480102087Sluigi } else if (fill_newports((ipfw_insn_u16 *)cmd, av, proto)) { 2481102087Sluigi /* XXX todo: check that we have a protocol with ports */ 2482102087Sluigi cmd->opcode = opcode; 2483102087Sluigi return cmd; 2484102087Sluigi } 2485102087Sluigi return NULL; 2486102087Sluigi} 2487102087Sluigi 248898943Sluigi/* 248998943Sluigi * Parse arguments and assemble the microinstructions which make up a rule. 249098943Sluigi * Rules are added into the 'rulebuf' and then copied in the correct order 249198943Sluigi * into the actual rule. 249298943Sluigi * 249398943Sluigi * The syntax for a rule starts with the action, followed by an 249498943Sluigi * optional log action, and the various match patterns. 2495108533Sschweikh * In the assembled microcode, the first opcode must be an O_PROBE_STATE 249698943Sluigi * (generated if the rule includes a keep-state option), then the 249798943Sluigi * various match patterns, the "log" action, and the actual action. 2498106505Smaxim * 249998943Sluigi */ 250098943Sluigistatic void 250198943Sluigiadd(int ac, char *av[]) 250298943Sluigi{ 250398943Sluigi /* 250498943Sluigi * rules are added into the 'rulebuf' and then copied in 250598943Sluigi * the correct order into the actual rule. 250698943Sluigi * Some things that need to go out of order (prob, action etc.) 250798943Sluigi * go into actbuf[]. 250898943Sluigi */ 250998943Sluigi static u_int32_t rulebuf[255], actbuf[255], cmdbuf[255]; 251098943Sluigi 251198943Sluigi ipfw_insn *src, *dst, *cmd, *action, *prev; 2512102087Sluigi ipfw_insn *first_cmd; /* first match pattern */ 251398943Sluigi 251498943Sluigi struct ip_fw *rule; 251598943Sluigi 251698943Sluigi /* 251798943Sluigi * various flags used to record that we entered some fields. 251898943Sluigi */ 2519101116Sluigi ipfw_insn *have_state = NULL; /* check-state or keep-state */ 252098943Sluigi 252198943Sluigi int i; 252298943Sluigi 252398943Sluigi int open_par = 0; /* open parenthesis ( */ 252498943Sluigi 252598943Sluigi /* proto is here because it is used to fetch ports */ 252698943Sluigi u_char proto = IPPROTO_IP; /* default protocol */ 252798943Sluigi 2528107289Sluigi double match_prob = 1; /* match probability, default is always match */ 2529107289Sluigi 253098943Sluigi bzero(actbuf, sizeof(actbuf)); /* actions go here */ 253198943Sluigi bzero(cmdbuf, sizeof(cmdbuf)); 253298943Sluigi bzero(rulebuf, sizeof(rulebuf)); 253398943Sluigi 253498943Sluigi rule = (struct ip_fw *)rulebuf; 253598943Sluigi cmd = (ipfw_insn *)cmdbuf; 253698943Sluigi action = (ipfw_insn *)actbuf; 253798943Sluigi 253898943Sluigi av++; ac--; 253998943Sluigi 254098943Sluigi /* [rule N] -- Rule number optional */ 254198943Sluigi if (ac && isdigit(**av)) { 254298943Sluigi rule->rulenum = atoi(*av); 254398943Sluigi av++; 254498943Sluigi ac--; 254598943Sluigi } 254698943Sluigi 2547101628Sluigi /* [set N] -- set number (0..30), optional */ 2548101628Sluigi if (ac > 1 && !strncmp(*av, "set", strlen(*av))) { 2549101628Sluigi int set = strtoul(av[1], NULL, 10); 2550101628Sluigi if (set < 0 || set > 30) 2551101628Sluigi errx(EX_DATAERR, "illegal set %s", av[1]); 2552101628Sluigi rule->set = set; 2553101628Sluigi av += 2; ac -= 2; 2554101628Sluigi } 2555101628Sluigi 255698943Sluigi /* [prob D] -- match probability, optional */ 255798943Sluigi if (ac > 1 && !strncmp(*av, "prob", strlen(*av))) { 2558107289Sluigi match_prob = strtod(av[1], NULL); 255998943Sluigi 2560107289Sluigi if (match_prob <= 0 || match_prob > 1) 256198943Sluigi errx(EX_DATAERR, "illegal match prob. %s", av[1]); 256298943Sluigi av += 2; ac -= 2; 256398943Sluigi } 256498943Sluigi 256598943Sluigi /* action -- mandatory */ 256698943Sluigi NEED1("missing action"); 256798943Sluigi i = match_token(rule_actions, *av); 256898943Sluigi ac--; av++; 256998943Sluigi action->len = 1; /* default */ 257098943Sluigi switch(i) { 257198943Sluigi case TOK_CHECKSTATE: 2572101116Sluigi have_state = action; 257398943Sluigi action->opcode = O_CHECK_STATE; 257498943Sluigi break; 257598943Sluigi 257698943Sluigi case TOK_ACCEPT: 257798943Sluigi action->opcode = O_ACCEPT; 257898943Sluigi break; 257998943Sluigi 258098943Sluigi case TOK_DENY: 258198943Sluigi action->opcode = O_DENY; 258299475Sluigi action->arg1 = 0; 258398943Sluigi break; 258498943Sluigi 258599475Sluigi case TOK_REJECT: 258699475Sluigi action->opcode = O_REJECT; 258799475Sluigi action->arg1 = ICMP_UNREACH_HOST; 258899475Sluigi break; 258999475Sluigi 259099475Sluigi case TOK_RESET: 259199475Sluigi action->opcode = O_REJECT; 259299475Sluigi action->arg1 = ICMP_REJECT_RST; 259399475Sluigi break; 259499475Sluigi 259599475Sluigi case TOK_UNREACH: 259699475Sluigi action->opcode = O_REJECT; 259799475Sluigi NEED1("missing reject code"); 259899475Sluigi fill_reject_code(&action->arg1, *av); 259999475Sluigi ac--; av++; 260099475Sluigi break; 260199475Sluigi 260298943Sluigi case TOK_COUNT: 260398943Sluigi action->opcode = O_COUNT; 260498943Sluigi break; 260598943Sluigi 260698943Sluigi case TOK_QUEUE: 260798943Sluigi case TOK_PIPE: 260898943Sluigi action->len = F_INSN_SIZE(ipfw_insn_pipe); 260998943Sluigi case TOK_SKIPTO: 261098943Sluigi if (i == TOK_QUEUE) 261198943Sluigi action->opcode = O_QUEUE; 261298943Sluigi else if (i == TOK_PIPE) 261398943Sluigi action->opcode = O_PIPE; 261498943Sluigi else if (i == TOK_SKIPTO) 261598943Sluigi action->opcode = O_SKIPTO; 261698943Sluigi NEED1("missing skipto/pipe/queue number"); 261798943Sluigi action->arg1 = strtoul(*av, NULL, 10); 261898943Sluigi av++; ac--; 261998943Sluigi break; 262098943Sluigi 262198943Sluigi case TOK_DIVERT: 262298943Sluigi case TOK_TEE: 262398943Sluigi action->opcode = (i == TOK_DIVERT) ? O_DIVERT : O_TEE; 262498943Sluigi NEED1("missing divert/tee port"); 262598943Sluigi action->arg1 = strtoul(*av, NULL, 0); 262698943Sluigi if (action->arg1 == 0) { 262798943Sluigi struct servent *s; 262898943Sluigi setservent(1); 262998943Sluigi s = getservbyname(av[0], "divert"); 263098943Sluigi if (s != NULL) 263198943Sluigi action->arg1 = ntohs(s->s_port); 263298943Sluigi else 263398943Sluigi errx(EX_DATAERR, "illegal divert/tee port"); 263498943Sluigi } 263598943Sluigi ac--; av++; 263698943Sluigi break; 263798943Sluigi 263898943Sluigi case TOK_FORWARD: { 263998943Sluigi ipfw_insn_sa *p = (ipfw_insn_sa *)action; 264098943Sluigi char *s, *end; 264198943Sluigi 264298943Sluigi NEED1("missing forward address[:port]"); 264398943Sluigi 264498943Sluigi action->opcode = O_FORWARD_IP; 264598943Sluigi action->len = F_INSN_SIZE(ipfw_insn_sa); 264698943Sluigi 264798943Sluigi p->sa.sin_len = sizeof(struct sockaddr_in); 264898943Sluigi p->sa.sin_family = AF_INET; 264998943Sluigi p->sa.sin_port = 0; 265098943Sluigi /* 265198943Sluigi * locate the address-port separator (':' or ',') 265298943Sluigi */ 265398943Sluigi s = strchr(*av, ':'); 265498943Sluigi if (s == NULL) 265598943Sluigi s = strchr(*av, ','); 265698943Sluigi if (s != NULL) { 265798943Sluigi *(s++) = '\0'; 265898943Sluigi i = strtoport(s, &end, 0 /* base */, 0 /* proto */); 265998943Sluigi if (s == end) 266098943Sluigi errx(EX_DATAERR, 266198943Sluigi "illegal forwarding port ``%s''", s); 2662103241Sluigi p->sa.sin_port = (u_short)i; 266398943Sluigi } 266498943Sluigi lookup_host(*av, &(p->sa.sin_addr)); 266598943Sluigi } 266698943Sluigi ac--; av++; 266798943Sluigi break; 266898943Sluigi 266998943Sluigi default: 2670102087Sluigi errx(EX_DATAERR, "invalid action %s\n", av[-1]); 267198943Sluigi } 267298943Sluigi action = next_cmd(action); 267398943Sluigi 267498943Sluigi /* 267598943Sluigi * [log [logamount N]] -- log, optional 267698943Sluigi * 267798943Sluigi * If exists, it goes first in the cmdbuf, but then it is 267898943Sluigi * skipped in the copy section to the end of the buffer. 267998943Sluigi */ 268098943Sluigi if (ac && !strncmp(*av, "log", strlen(*av))) { 268198943Sluigi ipfw_insn_log *c = (ipfw_insn_log *)cmd; 268298943Sluigi 268398943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_log); 268498943Sluigi cmd->opcode = O_LOG; 268598943Sluigi av++; ac--; 268698943Sluigi if (ac && !strncmp(*av, "logamount", strlen(*av))) { 268798943Sluigi ac--; av++; 268898943Sluigi NEED1("logamount requires argument"); 268998943Sluigi c->max_log = atoi(*av); 269098943Sluigi if (c->max_log < 0) 269198943Sluigi errx(EX_DATAERR, "logamount must be positive"); 269298943Sluigi ac--; av++; 269398943Sluigi } 269498943Sluigi cmd = next_cmd(cmd); 269598943Sluigi } 269698943Sluigi 2697101116Sluigi if (have_state) /* must be a check-state, we are done */ 269898943Sluigi goto done; 269998943Sluigi 270098943Sluigi#define OR_START(target) \ 270198943Sluigi if (ac && (*av[0] == '(' || *av[0] == '{')) { \ 270298943Sluigi if (open_par) \ 270398943Sluigi errx(EX_USAGE, "nested \"(\" not allowed\n"); \ 2704101641Sluigi prev = NULL; \ 270598943Sluigi open_par = 1; \ 270698943Sluigi if ( (av[0])[1] == '\0') { \ 270798943Sluigi ac--; av++; \ 270898943Sluigi } else \ 270998943Sluigi (*av)++; \ 271098943Sluigi } \ 271198943Sluigi target: \ 271298943Sluigi 271398943Sluigi 271498943Sluigi#define CLOSE_PAR \ 271598943Sluigi if (open_par) { \ 271698943Sluigi if (ac && ( \ 271798943Sluigi !strncmp(*av, ")", strlen(*av)) || \ 271898943Sluigi !strncmp(*av, "}", strlen(*av)) )) { \ 2719101641Sluigi prev = NULL; \ 272098943Sluigi open_par = 0; \ 272198943Sluigi ac--; av++; \ 272298943Sluigi } else \ 272398943Sluigi errx(EX_USAGE, "missing \")\"\n"); \ 272498943Sluigi } 2725106505Smaxim 272698943Sluigi#define NOT_BLOCK \ 272798943Sluigi if (ac && !strncmp(*av, "not", strlen(*av))) { \ 272898943Sluigi if (cmd->len & F_NOT) \ 272998943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); \ 273098943Sluigi cmd->len |= F_NOT; \ 273198943Sluigi ac--; av++; \ 273298943Sluigi } 273398943Sluigi 273498943Sluigi#define OR_BLOCK(target) \ 273598943Sluigi if (ac && !strncmp(*av, "or", strlen(*av))) { \ 273698943Sluigi if (prev == NULL || open_par == 0) \ 273798943Sluigi errx(EX_DATAERR, "invalid OR block"); \ 273898943Sluigi prev->len |= F_OR; \ 273998943Sluigi ac--; av++; \ 274098943Sluigi goto target; \ 274198943Sluigi } \ 274298943Sluigi CLOSE_PAR; 274398943Sluigi 2744102087Sluigi first_cmd = cmd; 2745102098Sluigi 2746102098Sluigi#if 0 274798943Sluigi /* 2748102087Sluigi * MAC addresses, optional. 2749102087Sluigi * If we have this, we skip the part "proto from src to dst" 2750102087Sluigi * and jump straight to the option parsing. 2751102087Sluigi */ 2752102087Sluigi NOT_BLOCK; 2753102087Sluigi NEED1("missing protocol"); 2754102087Sluigi if (!strncmp(*av, "MAC", strlen(*av)) || 2755102087Sluigi !strncmp(*av, "mac", strlen(*av))) { 2756102087Sluigi ac--; av++; /* the "MAC" keyword */ 2757102087Sluigi add_mac(cmd, ac, av); /* exits in case of errors */ 2758102087Sluigi cmd = next_cmd(cmd); 2759102087Sluigi ac -= 2; av += 2; /* dst-mac and src-mac */ 2760102087Sluigi NOT_BLOCK; 2761102087Sluigi NEED1("missing mac type"); 2762102087Sluigi if (add_mactype(cmd, ac, av[0])) 2763102087Sluigi cmd = next_cmd(cmd); 2764102087Sluigi ac--; av++; /* any or mac-type */ 2765102087Sluigi goto read_options; 2766102087Sluigi } 2767102098Sluigi#endif 2768102087Sluigi 2769102087Sluigi /* 277098943Sluigi * protocol, mandatory 277198943Sluigi */ 277298943Sluigi OR_START(get_proto); 277398943Sluigi NOT_BLOCK; 277498943Sluigi NEED1("missing protocol"); 2775102087Sluigi if (add_proto(cmd, *av)) { 2776102087Sluigi av++; ac--; 2777102087Sluigi if (F_LEN(cmd) == 0) /* plain IP */ 2778102087Sluigi proto = 0; 2779102087Sluigi else { 2780102087Sluigi proto = cmd->arg1; 2781102087Sluigi prev = cmd; 2782102087Sluigi cmd = next_cmd(cmd); 2783102087Sluigi } 2784102098Sluigi } else if (first_cmd != cmd) { 2785102098Sluigi errx(EX_DATAERR, "invalid protocol ``%s''", av); 2786102098Sluigi } else 2787102098Sluigi goto read_options; 278898943Sluigi OR_BLOCK(get_proto); 278998943Sluigi 279098943Sluigi /* 2791102087Sluigi * "from", mandatory 279298943Sluigi */ 2793102087Sluigi if (!ac || strncmp(*av, "from", strlen(*av))) 279498943Sluigi errx(EX_USAGE, "missing ``from''"); 279598943Sluigi ac--; av++; 279698943Sluigi 279798943Sluigi /* 279898943Sluigi * source IP, mandatory 279998943Sluigi */ 280098943Sluigi OR_START(source_ip); 280198943Sluigi NOT_BLOCK; /* optional "not" */ 280298943Sluigi NEED1("missing source address"); 2803102087Sluigi if (add_srcip(cmd, *av)) { 2804102087Sluigi ac--; av++; 2805102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 2806102087Sluigi prev = cmd; 2807102087Sluigi cmd = next_cmd(cmd); 2808102087Sluigi } 2809102087Sluigi } 281098943Sluigi OR_BLOCK(source_ip); 281198943Sluigi 281298943Sluigi /* 281398943Sluigi * source ports, optional 281498943Sluigi */ 281598943Sluigi NOT_BLOCK; /* optional "not" */ 2816101641Sluigi if (ac) { 2817102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 2818102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 2819102087Sluigi ac--; av++; 2820102087Sluigi if (F_LEN(cmd) != 0) 2821102087Sluigi cmd = next_cmd(cmd); 2822101641Sluigi } 282398943Sluigi } 282498943Sluigi 282598943Sluigi /* 2826102087Sluigi * "to", mandatory 282798943Sluigi */ 2828102087Sluigi if (!ac || strncmp(*av, "to", strlen(*av))) 282998943Sluigi errx(EX_USAGE, "missing ``to''"); 283098943Sluigi av++; ac--; 283198943Sluigi 283298943Sluigi /* 283398943Sluigi * destination, mandatory 283498943Sluigi */ 283598943Sluigi OR_START(dest_ip); 283698943Sluigi NOT_BLOCK; /* optional "not" */ 283798943Sluigi NEED1("missing dst address"); 2838102087Sluigi if (add_dstip(cmd, *av)) { 2839102087Sluigi ac--; av++; 2840102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 2841102087Sluigi prev = cmd; 2842102087Sluigi cmd = next_cmd(cmd); 2843102087Sluigi } 2844102087Sluigi } 284598943Sluigi OR_BLOCK(dest_ip); 284698943Sluigi 284798943Sluigi /* 284898943Sluigi * dest. ports, optional 284998943Sluigi */ 285098943Sluigi NOT_BLOCK; /* optional "not" */ 2851101641Sluigi if (ac) { 2852102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 2853102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 2854102087Sluigi ac--; av++; 2855102087Sluigi if (F_LEN(cmd) != 0) 2856102087Sluigi cmd = next_cmd(cmd); 2857101641Sluigi } 285898943Sluigi } 285998943Sluigi 286098943Sluigiread_options: 2861102087Sluigi if (ac && first_cmd == cmd) { 2862102087Sluigi /* 2863102087Sluigi * nothing specified so far, store in the rule to ease 2864102087Sluigi * printout later. 2865102087Sluigi */ 2866102087Sluigi rule->_pad = 1; 2867102087Sluigi } 286898943Sluigi prev = NULL; 286998943Sluigi while (ac) { 2870101641Sluigi char *s; 2871101641Sluigi ipfw_insn_u32 *cmd32; /* alias for cmd */ 287298943Sluigi 2873101641Sluigi s = *av; 2874101641Sluigi cmd32 = (ipfw_insn_u32 *)cmd; 2875101641Sluigi 287698943Sluigi if (*s == '!') { /* alternate syntax for NOT */ 287798943Sluigi if (cmd->len & F_NOT) 287898943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 287998943Sluigi cmd->len = F_NOT; 288098943Sluigi s++; 288198943Sluigi } 288298943Sluigi i = match_token(rule_options, s); 288398943Sluigi ac--; av++; 288498943Sluigi switch(i) { 288598943Sluigi case TOK_NOT: 288698943Sluigi if (cmd->len & F_NOT) 288798943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 288898943Sluigi cmd->len = F_NOT; 288998943Sluigi break; 289098943Sluigi 289198943Sluigi case TOK_OR: 2892101641Sluigi if (open_par == 0 || prev == NULL) 289398943Sluigi errx(EX_USAGE, "invalid \"or\" block\n"); 289498943Sluigi prev->len |= F_OR; 289598943Sluigi break; 2896101641Sluigi 2897101641Sluigi case TOK_STARTBRACE: 2898101641Sluigi if (open_par) 2899101641Sluigi errx(EX_USAGE, "+nested \"(\" not allowed\n"); 2900101641Sluigi open_par = 1; 2901101641Sluigi break; 2902101641Sluigi 2903101641Sluigi case TOK_ENDBRACE: 2904101641Sluigi if (!open_par) 2905101641Sluigi errx(EX_USAGE, "+missing \")\"\n"); 2906101641Sluigi open_par = 0; 2907102087Sluigi prev = NULL; 2908101641Sluigi break; 2909101641Sluigi 291098943Sluigi case TOK_IN: 291198943Sluigi fill_cmd(cmd, O_IN, 0, 0); 291298943Sluigi break; 291398943Sluigi 291498943Sluigi case TOK_OUT: 291598943Sluigi cmd->len ^= F_NOT; /* toggle F_NOT */ 291698943Sluigi fill_cmd(cmd, O_IN, 0, 0); 291798943Sluigi break; 291898943Sluigi 291998943Sluigi case TOK_FRAG: 292098943Sluigi fill_cmd(cmd, O_FRAG, 0, 0); 292198943Sluigi break; 292298943Sluigi 292398943Sluigi case TOK_LAYER2: 292498943Sluigi fill_cmd(cmd, O_LAYER2, 0, 0); 292598943Sluigi break; 292698943Sluigi 292798943Sluigi case TOK_XMIT: 292898943Sluigi case TOK_RECV: 292998943Sluigi case TOK_VIA: 293098943Sluigi NEED1("recv, xmit, via require interface name" 293198943Sluigi " or address"); 293298943Sluigi fill_iface((ipfw_insn_if *)cmd, av[0]); 293398943Sluigi ac--; av++; 293498943Sluigi if (F_LEN(cmd) == 0) /* not a valid address */ 293598943Sluigi break; 293698943Sluigi if (i == TOK_XMIT) 293798943Sluigi cmd->opcode = O_XMIT; 293898943Sluigi else if (i == TOK_RECV) 293998943Sluigi cmd->opcode = O_RECV; 294098943Sluigi else if (i == TOK_VIA) 294198943Sluigi cmd->opcode = O_VIA; 294298943Sluigi break; 294398943Sluigi 294499475Sluigi case TOK_ICMPTYPES: 294599475Sluigi NEED1("icmptypes requires list of types"); 294699475Sluigi fill_icmptypes((ipfw_insn_u32 *)cmd, *av); 294799475Sluigi av++; ac--; 294899475Sluigi break; 294999475Sluigi 295098943Sluigi case TOK_IPTTL: 295198943Sluigi NEED1("ipttl requires TTL"); 295298943Sluigi fill_cmd(cmd, O_IPTTL, 0, strtoul(*av, NULL, 0)); 295398943Sluigi ac--; av++; 295498943Sluigi break; 295598943Sluigi 295698943Sluigi case TOK_IPID: 295798943Sluigi NEED1("ipid requires length"); 295898943Sluigi fill_cmd(cmd, O_IPID, 0, strtoul(*av, NULL, 0)); 295998943Sluigi ac--; av++; 296098943Sluigi break; 296198943Sluigi 296298943Sluigi case TOK_IPLEN: 296398943Sluigi NEED1("iplen requires length"); 296498943Sluigi fill_cmd(cmd, O_IPLEN, 0, strtoul(*av, NULL, 0)); 296598943Sluigi ac--; av++; 296698943Sluigi break; 296798943Sluigi 296898943Sluigi case TOK_IPVER: 296998943Sluigi NEED1("ipver requires version"); 297098943Sluigi fill_cmd(cmd, O_IPVER, 0, strtoul(*av, NULL, 0)); 297198943Sluigi ac--; av++; 297298943Sluigi break; 297398943Sluigi 297499475Sluigi case TOK_IPPRECEDENCE: 297599475Sluigi NEED1("ipprecedence requires value"); 297699475Sluigi fill_cmd(cmd, O_IPPRECEDENCE, 0, 297799475Sluigi (strtoul(*av, NULL, 0) & 7) << 5); 297899475Sluigi ac--; av++; 297999475Sluigi break; 298099475Sluigi 298198943Sluigi case TOK_IPOPTS: 298298943Sluigi NEED1("missing argument for ipoptions"); 2983101116Sluigi fill_flags(cmd, O_IPOPT, f_ipopts, *av); 298498943Sluigi ac--; av++; 298598943Sluigi break; 298698943Sluigi 298799475Sluigi case TOK_IPTOS: 298899475Sluigi NEED1("missing argument for iptos"); 2989101116Sluigi fill_flags(cmd, O_IPTOS, f_iptos, *av); 299099475Sluigi ac--; av++; 299199475Sluigi break; 299299475Sluigi 299398943Sluigi case TOK_UID: 299498943Sluigi NEED1("uid requires argument"); 299598943Sluigi { 299698943Sluigi char *end; 299798943Sluigi uid_t uid; 299898943Sluigi struct passwd *pwd; 299998943Sluigi 300098943Sluigi cmd->opcode = O_UID; 300198943Sluigi uid = strtoul(*av, &end, 0); 300298943Sluigi pwd = (*end == '\0') ? getpwuid(uid) : getpwnam(*av); 300398943Sluigi if (pwd == NULL) 300498943Sluigi errx(EX_DATAERR, "uid \"%s\" nonexistent", *av); 3005106504Smaxim cmd32->d[0] = pwd->pw_uid; 300698943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 300798943Sluigi ac--; av++; 300898943Sluigi } 300998943Sluigi break; 301098943Sluigi 301198943Sluigi case TOK_GID: 301298943Sluigi NEED1("gid requires argument"); 301398943Sluigi { 301498943Sluigi char *end; 301598943Sluigi gid_t gid; 301698943Sluigi struct group *grp; 301798943Sluigi 301898943Sluigi cmd->opcode = O_GID; 301998943Sluigi gid = strtoul(*av, &end, 0); 302098943Sluigi grp = (*end == '\0') ? getgrgid(gid) : getgrnam(*av); 302198943Sluigi if (grp == NULL) 302298943Sluigi errx(EX_DATAERR, "gid \"%s\" nonexistent", *av); 3023106504Smaxim cmd32->d[0] = grp->gr_gid; 302498943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 302598943Sluigi ac--; av++; 302698943Sluigi } 302798943Sluigi break; 302898943Sluigi 302998943Sluigi case TOK_ESTAB: 303098943Sluigi fill_cmd(cmd, O_ESTAB, 0, 0); 303198943Sluigi break; 303298943Sluigi 303398943Sluigi case TOK_SETUP: 303498943Sluigi fill_cmd(cmd, O_TCPFLAGS, 0, 303598943Sluigi (TH_SYN) | ( (TH_ACK) & 0xff) <<8 ); 303698943Sluigi break; 303798943Sluigi 303898943Sluigi case TOK_TCPOPTS: 303998943Sluigi NEED1("missing argument for tcpoptions"); 304098943Sluigi fill_flags(cmd, O_TCPOPTS, f_tcpopts, *av); 304198943Sluigi ac--; av++; 304298943Sluigi break; 304398943Sluigi 304498943Sluigi case TOK_TCPSEQ: 304598943Sluigi case TOK_TCPACK: 304698943Sluigi NEED1("tcpseq/tcpack requires argument"); 304798943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 304898943Sluigi cmd->opcode = (i == TOK_TCPSEQ) ? O_TCPSEQ : O_TCPACK; 304998943Sluigi cmd32->d[0] = htonl(strtoul(*av, NULL, 0)); 305098943Sluigi ac--; av++; 305198943Sluigi break; 305298943Sluigi 305398943Sluigi case TOK_TCPWIN: 305498943Sluigi NEED1("tcpwin requires length"); 305598943Sluigi fill_cmd(cmd, O_TCPWIN, 0, 305698943Sluigi htons(strtoul(*av, NULL, 0))); 305798943Sluigi ac--; av++; 305898943Sluigi break; 305998943Sluigi 306098943Sluigi case TOK_TCPFLAGS: 306198943Sluigi NEED1("missing argument for tcpflags"); 306298943Sluigi cmd->opcode = O_TCPFLAGS; 306398943Sluigi fill_flags(cmd, O_TCPFLAGS, f_tcpflags, *av); 306498943Sluigi ac--; av++; 306598943Sluigi break; 306698943Sluigi 306798943Sluigi case TOK_KEEPSTATE: 3068101641Sluigi if (open_par) 3069101641Sluigi errx(EX_USAGE, "keep-state cannot be part " 3070101641Sluigi "of an or block"); 307199909Sluigi if (have_state) 3072101116Sluigi errx(EX_USAGE, "only one of keep-state " 307399909Sluigi "and limit is allowed"); 3074101116Sluigi have_state = cmd; 307598943Sluigi fill_cmd(cmd, O_KEEP_STATE, 0, 0); 307698943Sluigi break; 307798943Sluigi 307898943Sluigi case TOK_LIMIT: 3079101641Sluigi if (open_par) 3080101641Sluigi errx(EX_USAGE, "limit cannot be part " 3081101641Sluigi "of an or block"); 308299909Sluigi if (have_state) 3083101116Sluigi errx(EX_USAGE, "only one of keep-state " 308499909Sluigi "and limit is allowed"); 3085101641Sluigi NEED1("limit needs mask and # of connections"); 3086101116Sluigi have_state = cmd; 308798943Sluigi { 308898943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 308998943Sluigi 309098943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_limit); 309198943Sluigi cmd->opcode = O_LIMIT; 309298943Sluigi c->limit_mask = 0; 309398943Sluigi c->conn_limit = 0; 309498943Sluigi for (; ac >1 ;) { 309598943Sluigi int val; 309698943Sluigi 309798943Sluigi val = match_token(limit_masks, *av); 309898943Sluigi if (val <= 0) 309998943Sluigi break; 310098943Sluigi c->limit_mask |= val; 310198943Sluigi ac--; av++; 310298943Sluigi } 310398943Sluigi c->conn_limit = atoi(*av); 310498943Sluigi if (c->conn_limit == 0) 310598943Sluigi errx(EX_USAGE, "limit: limit must be >0"); 310698943Sluigi if (c->limit_mask == 0) 310798943Sluigi errx(EX_USAGE, "missing limit mask"); 310898943Sluigi ac--; av++; 310998943Sluigi } 311098943Sluigi break; 311198943Sluigi 3112102087Sluigi case TOK_PROTO: 3113102087Sluigi NEED1("missing protocol"); 3114102087Sluigi if (add_proto(cmd, *av)) { 3115102087Sluigi proto = cmd->arg1; 3116102087Sluigi ac--; av++; 3117102098Sluigi } else 3118102098Sluigi errx(EX_DATAERR, "invalid protocol ``%s''", av); 3119102087Sluigi break; 3120106505Smaxim 3121102087Sluigi case TOK_SRCIP: 3122102087Sluigi NEED1("missing source IP"); 3123102087Sluigi if (add_srcip(cmd, *av)) { 3124102087Sluigi ac--; av++; 3125102087Sluigi } 3126102087Sluigi break; 3127102087Sluigi 3128102087Sluigi case TOK_DSTIP: 3129102087Sluigi NEED1("missing destination IP"); 3130102087Sluigi if (add_dstip(cmd, *av)) { 3131102087Sluigi ac--; av++; 3132102087Sluigi } 3133102087Sluigi break; 3134102087Sluigi 3135102087Sluigi case TOK_SRCPORT: 3136102087Sluigi NEED1("missing source port"); 3137102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 3138102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 3139102087Sluigi ac--; av++; 3140102087Sluigi } else 3141102087Sluigi errx(EX_DATAERR, "invalid source port %s", *av); 3142102087Sluigi break; 3143102087Sluigi 3144102087Sluigi case TOK_DSTPORT: 3145102087Sluigi NEED1("missing destination port"); 3146102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 3147102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 3148102087Sluigi ac--; av++; 3149102087Sluigi } else 3150102087Sluigi errx(EX_DATAERR, "invalid destination port %s", 3151102087Sluigi *av); 3152102087Sluigi break; 3153102087Sluigi 3154102087Sluigi case TOK_MAC: 3155102087Sluigi if (ac < 2) 3156102087Sluigi errx(EX_USAGE, "MAC dst-mac src-mac"); 3157102087Sluigi if (add_mac(cmd, ac, av)) { 3158102087Sluigi ac -= 2; av += 2; 3159102087Sluigi } 3160102087Sluigi break; 3161102087Sluigi 3162102087Sluigi case TOK_MACTYPE: 3163102087Sluigi NEED1("missing mac type"); 3164102087Sluigi if (!add_mactype(cmd, ac, *av)) 3165102087Sluigi errx(EX_DATAERR, "invalid mac type %s", av); 3166102087Sluigi ac--; av++; 3167102087Sluigi break; 3168102087Sluigi 3169112250Scjc case TOK_VERREVPATH: 3170112250Scjc fill_cmd(cmd, O_VERREVPATH, 0, 0); 3171112250Scjc break; 3172112250Scjc 317398943Sluigi default: 317498943Sluigi errx(EX_USAGE, "unrecognised option [%d] %s\n", i, s); 317598943Sluigi } 317698943Sluigi if (F_LEN(cmd) > 0) { /* prepare to advance */ 317798943Sluigi prev = cmd; 317898943Sluigi cmd = next_cmd(cmd); 317998943Sluigi } 318098943Sluigi } 318198943Sluigi 318298943Sluigidone: 318398943Sluigi /* 318498943Sluigi * Now copy stuff into the rule. 318598943Sluigi * If we have a keep-state option, the first instruction 318698943Sluigi * must be a PROBE_STATE (which is generated here). 318798943Sluigi * If we have a LOG option, it was stored as the first command, 318898943Sluigi * and now must be moved to the top of the action part. 318998943Sluigi */ 319098943Sluigi dst = (ipfw_insn *)rule->cmd; 319198943Sluigi 319298943Sluigi /* 3193107289Sluigi * First thing to write into the command stream is the match probability. 3194107289Sluigi */ 3195107289Sluigi if (match_prob != 1) { /* 1 means always match */ 3196107289Sluigi dst->opcode = O_PROB; 3197107289Sluigi dst->len = 2; 3198107289Sluigi *((int32_t *)(dst+1)) = (int32_t)(match_prob * 0x7fffffff); 3199107289Sluigi dst += dst->len; 3200107289Sluigi } 3201107289Sluigi 3202107289Sluigi /* 320398943Sluigi * generate O_PROBE_STATE if necessary 320498943Sluigi */ 3205101116Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 320698943Sluigi fill_cmd(dst, O_PROBE_STATE, 0, 0); 320798943Sluigi dst = next_cmd(dst); 320898943Sluigi } 320998943Sluigi /* 3210101116Sluigi * copy all commands but O_LOG, O_KEEP_STATE, O_LIMIT 321198943Sluigi */ 321298943Sluigi for (src = (ipfw_insn *)cmdbuf; src != cmd; src += i) { 321398943Sluigi i = F_LEN(src); 321498943Sluigi 3215101116Sluigi switch (src->opcode) { 3216101116Sluigi case O_LOG: 3217101116Sluigi case O_KEEP_STATE: 3218101116Sluigi case O_LIMIT: 3219101116Sluigi break; 3220101116Sluigi default: 322198943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 322298943Sluigi dst += i; 322398943Sluigi } 322498943Sluigi } 322598943Sluigi 322698943Sluigi /* 3227101116Sluigi * put back the have_state command as last opcode 3228101116Sluigi */ 3229101295Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 3230101116Sluigi i = F_LEN(have_state); 3231101116Sluigi bcopy(have_state, dst, i * sizeof(u_int32_t)); 3232101116Sluigi dst += i; 3233101116Sluigi } 3234101116Sluigi /* 323598943Sluigi * start action section 323698943Sluigi */ 323798943Sluigi rule->act_ofs = dst - rule->cmd; 323898943Sluigi 323998943Sluigi /* 324098943Sluigi * put back O_LOG if necessary 324198943Sluigi */ 324298943Sluigi src = (ipfw_insn *)cmdbuf; 324398943Sluigi if ( src->opcode == O_LOG ) { 324498943Sluigi i = F_LEN(src); 324598943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 324698943Sluigi dst += i; 324798943Sluigi } 324898943Sluigi /* 324998943Sluigi * copy all other actions 325098943Sluigi */ 325198943Sluigi for (src = (ipfw_insn *)actbuf; src != action; src += i) { 325298943Sluigi i = F_LEN(src); 325398943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 325498943Sluigi dst += i; 325598943Sluigi } 325698943Sluigi 325798943Sluigi rule->cmd_len = (u_int32_t *)dst - (u_int32_t *)(rule->cmd); 325898943Sluigi i = (void *)dst - (void *)rule; 325998943Sluigi if (getsockopt(s, IPPROTO_IP, IP_FW_ADD, rule, &i) == -1) 326098943Sluigi err(EX_UNAVAILABLE, "getsockopt(%s)", "IP_FW_ADD"); 326198943Sluigi if (!do_quiet) 3262112189Smaxim show_ipfw(rule, 10, 10); 326398943Sluigi} 326498943Sluigi 326598943Sluigistatic void 3266101978Sluigizero(int ac, char *av[]) 326798943Sluigi{ 326898943Sluigi int rulenum; 326998943Sluigi int failed = EX_OK; 327098943Sluigi 327198943Sluigi av++; ac--; 327298943Sluigi 327398943Sluigi if (!ac) { 327498943Sluigi /* clear all entries */ 327598943Sluigi if (setsockopt(s, IPPROTO_IP, IP_FW_ZERO, NULL, 0) < 0) 327698943Sluigi err(EX_UNAVAILABLE, "setsockopt(%s)", "IP_FW_ZERO"); 327798943Sluigi if (!do_quiet) 327898943Sluigi printf("Accounting cleared.\n"); 327998943Sluigi 328098943Sluigi return; 328198943Sluigi } 328298943Sluigi 328398943Sluigi while (ac) { 328498943Sluigi /* Rule number */ 328598943Sluigi if (isdigit(**av)) { 328698943Sluigi rulenum = atoi(*av); 328798943Sluigi av++; 328898943Sluigi ac--; 328998943Sluigi if (setsockopt(s, IPPROTO_IP, 329098943Sluigi IP_FW_ZERO, &rulenum, sizeof rulenum)) { 329198943Sluigi warn("rule %u: setsockopt(IP_FW_ZERO)", 329298943Sluigi rulenum); 329398943Sluigi failed = EX_UNAVAILABLE; 329498943Sluigi } else if (!do_quiet) 329598943Sluigi printf("Entry %d cleared\n", rulenum); 329698943Sluigi } else { 329798943Sluigi errx(EX_USAGE, "invalid rule number ``%s''", *av); 329898943Sluigi } 329998943Sluigi } 330098943Sluigi if (failed != EX_OK) 330198943Sluigi exit(failed); 330298943Sluigi} 330398943Sluigi 330498943Sluigistatic void 3305101978Sluigiresetlog(int ac, char *av[]) 330698943Sluigi{ 330798943Sluigi int rulenum; 330898943Sluigi int failed = EX_OK; 330998943Sluigi 331098943Sluigi av++; ac--; 331198943Sluigi 331298943Sluigi if (!ac) { 331398943Sluigi /* clear all entries */ 331498943Sluigi if (setsockopt(s, IPPROTO_IP, IP_FW_RESETLOG, NULL, 0) < 0) 331598943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_FW_RESETLOG)"); 331698943Sluigi if (!do_quiet) 331798943Sluigi printf("Logging counts reset.\n"); 331898943Sluigi 331998943Sluigi return; 332098943Sluigi } 332198943Sluigi 332298943Sluigi while (ac) { 332398943Sluigi /* Rule number */ 332498943Sluigi if (isdigit(**av)) { 332598943Sluigi rulenum = atoi(*av); 332698943Sluigi av++; 332798943Sluigi ac--; 332898943Sluigi if (setsockopt(s, IPPROTO_IP, 332998943Sluigi IP_FW_RESETLOG, &rulenum, sizeof rulenum)) { 333098943Sluigi warn("rule %u: setsockopt(IP_FW_RESETLOG)", 333198943Sluigi rulenum); 333298943Sluigi failed = EX_UNAVAILABLE; 333398943Sluigi } else if (!do_quiet) 333498943Sluigi printf("Entry %d logging count reset\n", 333598943Sluigi rulenum); 333698943Sluigi } else { 333798943Sluigi errx(EX_DATAERR, "invalid rule number ``%s''", *av); 333898943Sluigi } 333998943Sluigi } 334098943Sluigi if (failed != EX_OK) 334198943Sluigi exit(failed); 334298943Sluigi} 334398943Sluigi 334498943Sluigistatic void 334598943Sluigiflush() 334698943Sluigi{ 334798943Sluigi int cmd = do_pipe ? IP_DUMMYNET_FLUSH : IP_FW_FLUSH; 334898943Sluigi 334998943Sluigi if (!do_force && !do_quiet) { /* need to ask user */ 335098943Sluigi int c; 335198943Sluigi 335298943Sluigi printf("Are you sure? [yn] "); 335398943Sluigi fflush(stdout); 335498943Sluigi do { 335598943Sluigi c = toupper(getc(stdin)); 335698943Sluigi while (c != '\n' && getc(stdin) != '\n') 335798943Sluigi if (feof(stdin)) 335898943Sluigi return; /* and do not flush */ 335998943Sluigi } while (c != 'Y' && c != 'N'); 336098943Sluigi printf("\n"); 336198943Sluigi if (c == 'N') /* user said no */ 336298943Sluigi return; 336398943Sluigi } 336498943Sluigi if (setsockopt(s, IPPROTO_IP, cmd, NULL, 0) < 0) 336598943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_%s_FLUSH)", 336698943Sluigi do_pipe ? "DUMMYNET" : "FW"); 336798943Sluigi if (!do_quiet) 336898943Sluigi printf("Flushed all %s.\n", do_pipe ? "pipes" : "rules"); 336998943Sluigi} 337098943Sluigi 337198943Sluigistatic int 337298943Sluigiipfw_main(int ac, char **av) 337398943Sluigi{ 337498943Sluigi int ch; 337598943Sluigi 337698943Sluigi if (ac == 1) 337798943Sluigi show_usage(); 337898943Sluigi 337998943Sluigi /* Set the force flag for non-interactive processes */ 338098943Sluigi do_force = !isatty(STDIN_FILENO); 338198943Sluigi 338298943Sluigi optind = optreset = 1; 3383102098Sluigi while ((ch = getopt(ac, av, "hs:acdefNqStv")) != -1) 338498943Sluigi switch (ch) { 338598943Sluigi case 'h': /* help */ 338698943Sluigi help(); 338798943Sluigi break; /* NOTREACHED */ 338898943Sluigi 338998943Sluigi case 's': /* sort */ 339098943Sluigi do_sort = atoi(optarg); 339198943Sluigi break; 339298943Sluigi case 'a': 339398943Sluigi do_acct = 1; 339498943Sluigi break; 3395102098Sluigi case 'c': 3396102098Sluigi do_compact = 1; 3397102098Sluigi break; 339898943Sluigi case 'd': 339998943Sluigi do_dynamic = 1; 340098943Sluigi break; 340198943Sluigi case 'e': 340298943Sluigi do_expired = 1; 340398943Sluigi break; 340498943Sluigi case 'f': 340598943Sluigi do_force = 1; 340698943Sluigi break; 340798943Sluigi case 'N': 340898943Sluigi do_resolv = 1; 340998943Sluigi break; 341098943Sluigi case 'q': 341198943Sluigi do_quiet = 1; 341298943Sluigi break; 3413101628Sluigi case 'S': 3414101628Sluigi show_sets = 1; 3415101628Sluigi break; 341698943Sluigi case 't': 341798943Sluigi do_time = 1; 341898943Sluigi break; 341998943Sluigi case 'v': /* verbose */ 342098943Sluigi verbose++; 342198943Sluigi break; 342298943Sluigi default: 342398943Sluigi show_usage(); 342498943Sluigi } 342598943Sluigi 342698943Sluigi ac -= optind; 342798943Sluigi av += optind; 342898943Sluigi NEED1("bad arguments, for usage summary ``ipfw''"); 342998943Sluigi 343098943Sluigi /* 343198943Sluigi * optional: pipe or queue 343298943Sluigi */ 343398943Sluigi if (!strncmp(*av, "pipe", strlen(*av))) { 343498943Sluigi do_pipe = 1; 343598943Sluigi ac--; 343698943Sluigi av++; 343798943Sluigi } else if (!strncmp(*av, "queue", strlen(*av))) { 343898943Sluigi do_pipe = 2; 343998943Sluigi ac--; 344098943Sluigi av++; 344198943Sluigi } 344298943Sluigi NEED1("missing command"); 344398943Sluigi 344498943Sluigi /* 344598943Sluigi * for pipes and queues we normally say 'pipe NN config' 344698943Sluigi * but the code is easier to parse as 'pipe config NN' 344798943Sluigi * so we swap the two arguments. 344898943Sluigi */ 344998943Sluigi if (do_pipe > 0 && ac > 1 && *av[0] >= '0' && *av[0] <= '9') { 345098943Sluigi char *p = av[0]; 345198943Sluigi av[0] = av[1]; 345298943Sluigi av[1] = p; 345398943Sluigi } 345498943Sluigi if (!strncmp(*av, "add", strlen(*av))) 345598943Sluigi add(ac, av); 345698943Sluigi else if (do_pipe && !strncmp(*av, "config", strlen(*av))) 345798943Sluigi config_pipe(ac, av); 3458101978Sluigi else if (!strncmp(*av, "delete", strlen(*av))) 345998943Sluigi delete(ac, av); 346098943Sluigi else if (!strncmp(*av, "flush", strlen(*av))) 346198943Sluigi flush(); 346298943Sluigi else if (!strncmp(*av, "zero", strlen(*av))) 346398943Sluigi zero(ac, av); 346498943Sluigi else if (!strncmp(*av, "resetlog", strlen(*av))) 346598943Sluigi resetlog(ac, av); 346698943Sluigi else if (!strncmp(*av, "print", strlen(*av)) || 346798943Sluigi !strncmp(*av, "list", strlen(*av))) 346898943Sluigi list(ac, av); 3469101978Sluigi else if (!strncmp(*av, "set", strlen(*av))) 3470101978Sluigi sets_handler(ac, av); 3471109126Sdillon else if (!strncmp(*av, "enable", strlen(*av))) 3472109126Sdillon sysctl_handler(ac, av, 1); 3473109126Sdillon else if (!strncmp(*av, "disable", strlen(*av))) 3474109126Sdillon sysctl_handler(ac, av, 0); 347598943Sluigi else if (!strncmp(*av, "show", strlen(*av))) { 347698943Sluigi do_acct++; 347798943Sluigi list(ac, av); 347898943Sluigi } else 347998943Sluigi errx(EX_USAGE, "bad command `%s'", *av); 348098943Sluigi return 0; 348198943Sluigi} 348298943Sluigi 348398943Sluigi 348498943Sluigistatic void 3485106505Smaximipfw_readfile(int ac, char *av[]) 348698943Sluigi{ 348798943Sluigi#define MAX_ARGS 32 348898943Sluigi#define WHITESP " \t\f\v\n\r" 348998943Sluigi char buf[BUFSIZ]; 349098943Sluigi char *a, *p, *args[MAX_ARGS], *cmd = NULL; 349198943Sluigi char linename[10]; 349298943Sluigi int i=0, lineno=0, qflag=0, pflag=0, status; 349398943Sluigi FILE *f = NULL; 349498943Sluigi pid_t preproc = 0; 349598943Sluigi int c; 349698943Sluigi 3497108231Skbyanc while ((c = getopt(ac, av, "p:q")) != -1) { 349898943Sluigi switch(c) { 349998943Sluigi case 'p': 350098943Sluigi pflag = 1; 350198943Sluigi cmd = optarg; 350298943Sluigi args[0] = cmd; 350398943Sluigi i = 1; 350498943Sluigi break; 350598943Sluigi 350698943Sluigi case 'q': 350798943Sluigi qflag = 1; 350898943Sluigi break; 350998943Sluigi 351098943Sluigi default: 351198943Sluigi errx(EX_USAGE, "bad arguments, for usage" 351298943Sluigi " summary ``ipfw''"); 351398943Sluigi } 351498943Sluigi 3515108231Skbyanc if (pflag) 3516108231Skbyanc break; 3517108231Skbyanc } 3518108231Skbyanc 3519108231Skbyanc if (pflag) { 3520108231Skbyanc /* Pass all but the last argument to the preprocessor. */ 3521108231Skbyanc while (optind < ac - 1) { 3522108231Skbyanc if (i >= MAX_ARGS) 3523108231Skbyanc errx(EX_USAGE, "too many preprocessor options"); 3524108231Skbyanc args[i++] = av[optind++]; 3525108231Skbyanc } 3526108231Skbyanc } 3527108231Skbyanc 352898943Sluigi av += optind; 352998943Sluigi ac -= optind; 353098943Sluigi if (ac != 1) 353198943Sluigi errx(EX_USAGE, "extraneous filename arguments"); 353298943Sluigi 353398943Sluigi if ((f = fopen(av[0], "r")) == NULL) 353498943Sluigi err(EX_UNAVAILABLE, "fopen: %s", av[0]); 353598943Sluigi 353698943Sluigi if (pflag) { 353798943Sluigi /* pipe through preprocessor (cpp or m4) */ 353898943Sluigi int pipedes[2]; 353998943Sluigi 354098943Sluigi args[i] = 0; 354198943Sluigi 354298943Sluigi if (pipe(pipedes) == -1) 354398943Sluigi err(EX_OSERR, "cannot create pipe"); 354498943Sluigi 354598943Sluigi switch((preproc = fork())) { 354698943Sluigi case -1: 354798943Sluigi err(EX_OSERR, "cannot fork"); 354898943Sluigi 354998943Sluigi case 0: 355098943Sluigi /* child */ 355198943Sluigi if (dup2(fileno(f), 0) == -1 355298943Sluigi || dup2(pipedes[1], 1) == -1) 355398943Sluigi err(EX_OSERR, "dup2()"); 355498943Sluigi fclose(f); 355598943Sluigi close(pipedes[1]); 355698943Sluigi close(pipedes[0]); 355798943Sluigi execvp(cmd, args); 355898943Sluigi err(EX_OSERR, "execvp(%s) failed", cmd); 355998943Sluigi 356098943Sluigi default: 356198943Sluigi /* parent */ 356298943Sluigi fclose(f); 356398943Sluigi close(pipedes[1]); 356498943Sluigi if ((f = fdopen(pipedes[0], "r")) == NULL) { 356598943Sluigi int savederrno = errno; 356698943Sluigi 356798943Sluigi (void)kill(preproc, SIGTERM); 356898943Sluigi errno = savederrno; 356998943Sluigi err(EX_OSERR, "fdopen()"); 357098943Sluigi } 357198943Sluigi } 357298943Sluigi } 357398943Sluigi 357498943Sluigi while (fgets(buf, BUFSIZ, f)) { 357598943Sluigi lineno++; 357698943Sluigi sprintf(linename, "Line %d", lineno); 357798943Sluigi args[0] = linename; 357898943Sluigi 357998943Sluigi if (*buf == '#') 358098943Sluigi continue; 358198943Sluigi if ((p = strchr(buf, '#')) != NULL) 358298943Sluigi *p = '\0'; 358398943Sluigi i = 1; 358498943Sluigi if (qflag) 358598943Sluigi args[i++] = "-q"; 358698943Sluigi for (a = strtok(buf, WHITESP); 358798943Sluigi a && i < MAX_ARGS; a = strtok(NULL, WHITESP), i++) 358898943Sluigi args[i] = a; 358998943Sluigi if (i == (qflag? 2: 1)) 359098943Sluigi continue; 359198943Sluigi if (i == MAX_ARGS) 359298943Sluigi errx(EX_USAGE, "%s: too many arguments", 359398943Sluigi linename); 359498943Sluigi args[i] = NULL; 359598943Sluigi 359698943Sluigi ipfw_main(i, args); 359798943Sluigi } 359898943Sluigi fclose(f); 359998943Sluigi if (pflag) { 360098943Sluigi if (waitpid(preproc, &status, 0) == -1) 360198943Sluigi errx(EX_OSERR, "waitpid()"); 360298943Sluigi if (WIFEXITED(status) && WEXITSTATUS(status) != EX_OK) 360398943Sluigi errx(EX_UNAVAILABLE, 360498943Sluigi "preprocessor exited with status %d", 360598943Sluigi WEXITSTATUS(status)); 360698943Sluigi else if (WIFSIGNALED(status)) 360798943Sluigi errx(EX_UNAVAILABLE, 360898943Sluigi "preprocessor exited with signal %d", 360998943Sluigi WTERMSIG(status)); 361098943Sluigi } 361198943Sluigi} 361298943Sluigi 361398943Sluigiint 361498943Sluigimain(int ac, char *av[]) 361598943Sluigi{ 361698943Sluigi s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); 361798943Sluigi if (s < 0) 361898943Sluigi err(EX_UNAVAILABLE, "socket"); 361998943Sluigi 362098943Sluigi /* 362198943Sluigi * If the last argument is an absolute pathname, interpret it 362298943Sluigi * as a file to be preprocessed. 362398943Sluigi */ 362498943Sluigi 362598943Sluigi if (ac > 1 && av[ac - 1][0] == '/' && access(av[ac - 1], R_OK) == 0) 362698943Sluigi ipfw_readfile(ac, av); 362798943Sluigi else 362898943Sluigi ipfw_main(ac, av); 362998943Sluigi return EX_OK; 363098943Sluigi} 3631