ipfw2.c revision 112189
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 112189 2003-03-13 10:51:53Z maxim $ 2198943Sluigi */ 2298943Sluigi 2398943Sluigi#include <sys/param.h> 2498943Sluigi#include <sys/mbuf.h> 2598943Sluigi#include <sys/socket.h> 2698943Sluigi#include <sys/sockio.h> 2798943Sluigi#include <sys/sysctl.h> 2898943Sluigi#include <sys/time.h> 2998943Sluigi#include <sys/wait.h> 3098943Sluigi 3198943Sluigi#include <ctype.h> 3298943Sluigi#include <err.h> 3398943Sluigi#include <errno.h> 3498943Sluigi#include <grp.h> 3598943Sluigi#include <limits.h> 3698943Sluigi#include <netdb.h> 3798943Sluigi#include <pwd.h> 3898943Sluigi#include <signal.h> 3998943Sluigi#include <stdio.h> 4098943Sluigi#include <stdlib.h> 4198943Sluigi#include <stdarg.h> 4298943Sluigi#include <string.h> 4399603Sbde#include <timeconv.h> 4498943Sluigi#include <unistd.h> 4598943Sluigi#include <sysexits.h> 4698943Sluigi 4798943Sluigi#include <net/if.h> 4898943Sluigi#include <netinet/in.h> 4998943Sluigi#include <netinet/in_systm.h> 5098943Sluigi#include <netinet/ip.h> 5198943Sluigi#include <netinet/ip_icmp.h> 5298943Sluigi#include <netinet/ip_fw.h> 5398943Sluigi#include <net/route.h> /* def. of struct route */ 5498943Sluigi#include <netinet/ip_dummynet.h> 5598943Sluigi#include <netinet/tcp.h> 5698943Sluigi#include <arpa/inet.h> 5798943Sluigi 5898943Sluigiint s, /* main RAW socket */ 5998943Sluigi do_resolv, /* Would try to resolve all */ 6098943Sluigi do_acct, /* Show packet/byte count */ 6198943Sluigi do_time, /* Show time stamps */ 6298943Sluigi do_quiet, /* Be quiet in add and flush */ 6398943Sluigi do_force, /* Don't ask for confirmation */ 6498943Sluigi do_pipe, /* this cmd refers to a pipe */ 6598943Sluigi do_sort, /* field to sort results (0 = no) */ 6698943Sluigi do_dynamic, /* display dynamic rules */ 6798943Sluigi do_expired, /* display expired dynamic rules */ 68102098Sluigi do_compact, /* show rules in compact mode */ 69101628Sluigi show_sets, /* display rule sets */ 7098943Sluigi verbose; 7198943Sluigi 7298943Sluigi#define IP_MASK_ALL 0xffffffff 7398943Sluigi 7498943Sluigi/* 7598943Sluigi * structure to hold flag names and associated values to be 7698943Sluigi * set in the appropriate masks. 7798943Sluigi * A NULL string terminates the array. 7898943Sluigi * Often, an element with 0 value contains an error string. 7998943Sluigi * 8098943Sluigi */ 8198943Sluigistruct _s_x { 8298943Sluigi char *s; 8398943Sluigi int x; 8498943Sluigi}; 8598943Sluigi 8698943Sluigistatic struct _s_x f_tcpflags[] = { 8798943Sluigi { "syn", TH_SYN }, 8898943Sluigi { "fin", TH_FIN }, 8998943Sluigi { "ack", TH_ACK }, 9098943Sluigi { "psh", TH_PUSH }, 9198943Sluigi { "rst", TH_RST }, 9298943Sluigi { "urg", TH_URG }, 9398943Sluigi { "tcp flag", 0 }, 9498943Sluigi { NULL, 0 } 9598943Sluigi}; 9698943Sluigi 9798943Sluigistatic struct _s_x f_tcpopts[] = { 9898943Sluigi { "mss", IP_FW_TCPOPT_MSS }, 9998943Sluigi { "maxseg", IP_FW_TCPOPT_MSS }, 10098943Sluigi { "window", IP_FW_TCPOPT_WINDOW }, 10198943Sluigi { "sack", IP_FW_TCPOPT_SACK }, 10298943Sluigi { "ts", IP_FW_TCPOPT_TS }, 10398943Sluigi { "timestamp", IP_FW_TCPOPT_TS }, 10498943Sluigi { "cc", IP_FW_TCPOPT_CC }, 10598943Sluigi { "tcp option", 0 }, 10698943Sluigi { NULL, 0 } 10798943Sluigi}; 10898943Sluigi 10998943Sluigi/* 11098943Sluigi * IP options span the range 0 to 255 so we need to remap them 11198943Sluigi * (though in fact only the low 5 bits are significant). 11298943Sluigi */ 11398943Sluigistatic struct _s_x f_ipopts[] = { 11498943Sluigi { "ssrr", IP_FW_IPOPT_SSRR}, 11598943Sluigi { "lsrr", IP_FW_IPOPT_LSRR}, 11698943Sluigi { "rr", IP_FW_IPOPT_RR}, 11798943Sluigi { "ts", IP_FW_IPOPT_TS}, 11898943Sluigi { "ip option", 0 }, 11998943Sluigi { NULL, 0 } 12098943Sluigi}; 12198943Sluigi 12298943Sluigistatic struct _s_x f_iptos[] = { 12398943Sluigi { "lowdelay", IPTOS_LOWDELAY}, 12498943Sluigi { "throughput", IPTOS_THROUGHPUT}, 12598943Sluigi { "reliability", IPTOS_RELIABILITY}, 12698943Sluigi { "mincost", IPTOS_MINCOST}, 12798943Sluigi { "congestion", IPTOS_CE}, 12898943Sluigi { "ecntransport", IPTOS_ECT}, 12998943Sluigi { "ip tos option", 0}, 13098943Sluigi { NULL, 0 } 13198943Sluigi}; 13298943Sluigi 13398943Sluigistatic struct _s_x limit_masks[] = { 13498943Sluigi {"all", DYN_SRC_ADDR|DYN_SRC_PORT|DYN_DST_ADDR|DYN_DST_PORT}, 13598943Sluigi {"src-addr", DYN_SRC_ADDR}, 13698943Sluigi {"src-port", DYN_SRC_PORT}, 13798943Sluigi {"dst-addr", DYN_DST_ADDR}, 13898943Sluigi {"dst-port", DYN_DST_PORT}, 13998943Sluigi {NULL, 0} 14098943Sluigi}; 14198943Sluigi 14298943Sluigi/* 14398943Sluigi * we use IPPROTO_ETHERTYPE as a fake protocol id to call the print routines 14498943Sluigi * This is only used in this code. 14598943Sluigi */ 14698943Sluigi#define IPPROTO_ETHERTYPE 0x1000 14798943Sluigistatic struct _s_x ether_types[] = { 14898943Sluigi /* 14998943Sluigi * Note, we cannot use "-:&/" in the names because they are field 15098943Sluigi * separators in the type specifications. Also, we use s = NULL as 15198943Sluigi * end-delimiter, because a type of 0 can be legal. 15298943Sluigi */ 15398943Sluigi { "ip", 0x0800 }, 15498943Sluigi { "ipv4", 0x0800 }, 15598943Sluigi { "ipv6", 0x86dd }, 15698943Sluigi { "arp", 0x0806 }, 15798943Sluigi { "rarp", 0x8035 }, 15898943Sluigi { "vlan", 0x8100 }, 15998943Sluigi { "loop", 0x9000 }, 16098943Sluigi { "trail", 0x1000 }, 16198943Sluigi { "at", 0x809b }, 16298943Sluigi { "atalk", 0x809b }, 16398943Sluigi { "aarp", 0x80f3 }, 16498943Sluigi { "pppoe_disc", 0x8863 }, 16598943Sluigi { "pppoe_sess", 0x8864 }, 16698943Sluigi { "ipx_8022", 0x00E0 }, 16798943Sluigi { "ipx_8023", 0x0000 }, 16898943Sluigi { "ipx_ii", 0x8137 }, 16998943Sluigi { "ipx_snap", 0x8137 }, 17098943Sluigi { "ipx", 0x8137 }, 17198943Sluigi { "ns", 0x0600 }, 17298943Sluigi { NULL, 0 } 17398943Sluigi}; 17498943Sluigi 17598943Sluigistatic void show_usage(void); 17698943Sluigi 17798943Sluigienum tokens { 17898943Sluigi TOK_NULL=0, 17998943Sluigi 18098943Sluigi TOK_OR, 18198943Sluigi TOK_NOT, 182101641Sluigi TOK_STARTBRACE, 183101641Sluigi TOK_ENDBRACE, 18498943Sluigi 18598943Sluigi TOK_ACCEPT, 18698943Sluigi TOK_COUNT, 18798943Sluigi TOK_PIPE, 18898943Sluigi TOK_QUEUE, 18998943Sluigi TOK_DIVERT, 19098943Sluigi TOK_TEE, 19198943Sluigi TOK_FORWARD, 19298943Sluigi TOK_SKIPTO, 19398943Sluigi TOK_DENY, 19498943Sluigi TOK_REJECT, 19598943Sluigi TOK_RESET, 19698943Sluigi TOK_UNREACH, 19798943Sluigi TOK_CHECKSTATE, 19898943Sluigi 19998943Sluigi TOK_UID, 20098943Sluigi TOK_GID, 20198943Sluigi TOK_IN, 20298943Sluigi TOK_LIMIT, 20398943Sluigi TOK_KEEPSTATE, 20498943Sluigi TOK_LAYER2, 20598943Sluigi TOK_OUT, 20698943Sluigi TOK_XMIT, 20798943Sluigi TOK_RECV, 20898943Sluigi TOK_VIA, 20998943Sluigi TOK_FRAG, 21098943Sluigi TOK_IPOPTS, 21198943Sluigi TOK_IPLEN, 21298943Sluigi TOK_IPID, 21398943Sluigi TOK_IPPRECEDENCE, 21498943Sluigi TOK_IPTOS, 21598943Sluigi TOK_IPTTL, 21698943Sluigi TOK_IPVER, 21798943Sluigi TOK_ESTAB, 21898943Sluigi TOK_SETUP, 21998943Sluigi TOK_TCPFLAGS, 22098943Sluigi TOK_TCPOPTS, 22198943Sluigi TOK_TCPSEQ, 22298943Sluigi TOK_TCPACK, 22398943Sluigi TOK_TCPWIN, 22498943Sluigi TOK_ICMPTYPES, 225102087Sluigi TOK_MAC, 226102087Sluigi TOK_MACTYPE, 22798943Sluigi 22898943Sluigi TOK_PLR, 229101978Sluigi TOK_NOERROR, 23098943Sluigi TOK_BUCKETS, 23198943Sluigi TOK_DSTIP, 23298943Sluigi TOK_SRCIP, 23398943Sluigi TOK_DSTPORT, 23498943Sluigi TOK_SRCPORT, 23598943Sluigi TOK_ALL, 23698943Sluigi TOK_MASK, 23798943Sluigi TOK_BW, 23898943Sluigi TOK_DELAY, 23998943Sluigi TOK_RED, 24098943Sluigi TOK_GRED, 24198943Sluigi TOK_DROPTAIL, 24298943Sluigi TOK_PROTO, 24398943Sluigi TOK_WEIGHT, 24498943Sluigi}; 24598943Sluigi 24698943Sluigistruct _s_x dummynet_params[] = { 24798943Sluigi { "plr", TOK_PLR }, 248101978Sluigi { "noerror", TOK_NOERROR }, 24998943Sluigi { "buckets", TOK_BUCKETS }, 25098943Sluigi { "dst-ip", TOK_DSTIP }, 25198943Sluigi { "src-ip", TOK_SRCIP }, 25298943Sluigi { "dst-port", TOK_DSTPORT }, 25398943Sluigi { "src-port", TOK_SRCPORT }, 25498943Sluigi { "proto", TOK_PROTO }, 25598943Sluigi { "weight", TOK_WEIGHT }, 25698943Sluigi { "all", TOK_ALL }, 25798943Sluigi { "mask", TOK_MASK }, 25898943Sluigi { "droptail", TOK_DROPTAIL }, 25998943Sluigi { "red", TOK_RED }, 26098943Sluigi { "gred", TOK_GRED }, 26198943Sluigi { "bw", TOK_BW }, 26298943Sluigi { "bandwidth", TOK_BW }, 26398943Sluigi { "delay", TOK_DELAY }, 26499475Sluigi { "pipe", TOK_PIPE }, 26598943Sluigi { "queue", TOK_QUEUE }, 26698943Sluigi { "dummynet-params", TOK_NULL }, 26798943Sluigi { NULL, 0 } 26898943Sluigi}; 26998943Sluigi 27098943Sluigistruct _s_x rule_actions[] = { 27198943Sluigi { "accept", TOK_ACCEPT }, 27298943Sluigi { "pass", TOK_ACCEPT }, 27398943Sluigi { "allow", TOK_ACCEPT }, 27498943Sluigi { "permit", TOK_ACCEPT }, 27598943Sluigi { "count", TOK_COUNT }, 27698943Sluigi { "pipe", TOK_PIPE }, 27798943Sluigi { "queue", TOK_QUEUE }, 27898943Sluigi { "divert", TOK_DIVERT }, 27998943Sluigi { "tee", TOK_TEE }, 28098943Sluigi { "fwd", TOK_FORWARD }, 28198943Sluigi { "forward", TOK_FORWARD }, 28298943Sluigi { "skipto", TOK_SKIPTO }, 28398943Sluigi { "deny", TOK_DENY }, 28498943Sluigi { "drop", TOK_DENY }, 28598943Sluigi { "reject", TOK_REJECT }, 28698943Sluigi { "reset", TOK_RESET }, 28799475Sluigi { "unreach", TOK_UNREACH }, 28898943Sluigi { "check-state", TOK_CHECKSTATE }, 28998943Sluigi { NULL, TOK_NULL }, 29098943Sluigi { NULL, 0 } 29198943Sluigi}; 29298943Sluigi 29398943Sluigistruct _s_x rule_options[] = { 29498943Sluigi { "uid", TOK_UID }, 29598943Sluigi { "gid", TOK_GID }, 29698943Sluigi { "in", TOK_IN }, 29798943Sluigi { "limit", TOK_LIMIT }, 29898943Sluigi { "keep-state", TOK_KEEPSTATE }, 29998943Sluigi { "bridged", TOK_LAYER2 }, 30098943Sluigi { "layer2", TOK_LAYER2 }, 30198943Sluigi { "out", TOK_OUT }, 30298943Sluigi { "xmit", TOK_XMIT }, 30398943Sluigi { "recv", TOK_RECV }, 30498943Sluigi { "via", TOK_VIA }, 30598943Sluigi { "fragment", TOK_FRAG }, 30698943Sluigi { "frag", TOK_FRAG }, 30798943Sluigi { "ipoptions", TOK_IPOPTS }, 30898943Sluigi { "ipopts", TOK_IPOPTS }, 30998943Sluigi { "iplen", TOK_IPLEN }, 31098943Sluigi { "ipid", TOK_IPID }, 31198943Sluigi { "ipprecedence", TOK_IPPRECEDENCE }, 31298943Sluigi { "iptos", TOK_IPTOS }, 31398943Sluigi { "ipttl", TOK_IPTTL }, 31498943Sluigi { "ipversion", TOK_IPVER }, 31598943Sluigi { "ipver", TOK_IPVER }, 31698943Sluigi { "estab", TOK_ESTAB }, 31798943Sluigi { "established", TOK_ESTAB }, 31898943Sluigi { "setup", TOK_SETUP }, 31998943Sluigi { "tcpflags", TOK_TCPFLAGS }, 32098943Sluigi { "tcpflgs", TOK_TCPFLAGS }, 32198943Sluigi { "tcpoptions", TOK_TCPOPTS }, 32298943Sluigi { "tcpopts", TOK_TCPOPTS }, 32398943Sluigi { "tcpseq", TOK_TCPSEQ }, 32498943Sluigi { "tcpack", TOK_TCPACK }, 32598943Sluigi { "tcpwin", TOK_TCPWIN }, 32699909Sluigi { "icmptype", TOK_ICMPTYPES }, 32798943Sluigi { "icmptypes", TOK_ICMPTYPES }, 328102087Sluigi { "dst-ip", TOK_DSTIP }, 329102087Sluigi { "src-ip", TOK_SRCIP }, 330102087Sluigi { "dst-port", TOK_DSTPORT }, 331102087Sluigi { "src-port", TOK_SRCPORT }, 332102087Sluigi { "proto", TOK_PROTO }, 333102087Sluigi { "MAC", TOK_MAC }, 334102087Sluigi { "mac", TOK_MAC }, 335102087Sluigi { "mac-type", TOK_MACTYPE }, 33698943Sluigi 33798943Sluigi { "not", TOK_NOT }, /* pseudo option */ 33898943Sluigi { "!", /* escape ? */ TOK_NOT }, /* pseudo option */ 33998943Sluigi { "or", TOK_OR }, /* pseudo option */ 34098943Sluigi { "|", /* escape */ TOK_OR }, /* pseudo option */ 341101641Sluigi { "{", TOK_STARTBRACE }, /* pseudo option */ 342101641Sluigi { "(", TOK_STARTBRACE }, /* pseudo option */ 343101641Sluigi { "}", TOK_ENDBRACE }, /* pseudo option */ 344101641Sluigi { ")", TOK_ENDBRACE }, /* pseudo option */ 34598943Sluigi { NULL, TOK_NULL }, 34698943Sluigi { NULL, 0 } 34798943Sluigi}; 34898943Sluigi 34998943Sluigi/** 35098943Sluigi * match_token takes a table and a string, returns the value associated 35198943Sluigi * with the string (0 meaning an error in most cases) 35298943Sluigi */ 35398943Sluigistatic int 35498943Sluigimatch_token(struct _s_x *table, char *string) 35598943Sluigi{ 35698943Sluigi struct _s_x *pt; 35798943Sluigi int i = strlen(string); 35898943Sluigi 35998943Sluigi for (pt = table ; i && pt->s != NULL ; pt++) 36098943Sluigi if (strlen(pt->s) == i && !bcmp(string, pt->s, i)) 36198943Sluigi return pt->x; 36298943Sluigi return -1; 36398943Sluigi}; 36498943Sluigi 36598943Sluigistatic char * 36698943Sluigimatch_value(struct _s_x *p, u_int32_t value) 36798943Sluigi{ 36898943Sluigi for (; p->s != NULL; p++) 36998943Sluigi if (p->x == value) 37098943Sluigi return p->s; 37198943Sluigi return NULL; 37298943Sluigi} 37398943Sluigi 37498943Sluigi/* 37598943Sluigi * prints one port, symbolic or numeric 37698943Sluigi */ 37798943Sluigistatic void 37898943Sluigiprint_port(int proto, u_int16_t port) 37998943Sluigi{ 38098943Sluigi 38198943Sluigi if (proto == IPPROTO_ETHERTYPE) { 38298943Sluigi char *s; 38398943Sluigi 38498943Sluigi if (do_resolv && (s = match_value(ether_types, port)) ) 38598943Sluigi printf("%s", s); 38698943Sluigi else 38798943Sluigi printf("0x%04x", port); 38898943Sluigi } else { 38998943Sluigi struct servent *se = NULL; 39098943Sluigi if (do_resolv) { 39198943Sluigi struct protoent *pe = getprotobynumber(proto); 39298943Sluigi 39398943Sluigi se = getservbyport(htons(port), pe ? pe->p_name : NULL); 39498943Sluigi } 39598943Sluigi if (se) 39698943Sluigi printf("%s", se->s_name); 39798943Sluigi else 39898943Sluigi printf("%d", port); 39998943Sluigi } 40098943Sluigi} 40198943Sluigi 40298943Sluigi/* 40398943Sluigi * print the values in a list of ports 40498943Sluigi * XXX todo: add support for mask. 40598943Sluigi */ 40698943Sluigistatic void 407102087Sluigiprint_newports(ipfw_insn_u16 *cmd, int proto, int opcode) 40898943Sluigi{ 40998943Sluigi u_int16_t *p = cmd->ports; 41098943Sluigi int i; 41198943Sluigi char *sep= " "; 41298943Sluigi 41398943Sluigi if (cmd->o.len & F_NOT) 41498943Sluigi printf(" not"); 415102087Sluigi if (opcode != 0) 416102087Sluigi printf ("%s", opcode == O_MAC_TYPE ? " mac-type" : 417102087Sluigi (opcode == O_IP_DSTPORT ? " dst-port" : " src-port")); 41898943Sluigi for (i = F_LEN((ipfw_insn *)cmd) - 1; i > 0; i--, p += 2) { 41998943Sluigi printf(sep); 42098943Sluigi print_port(proto, p[0]); 42198943Sluigi if (p[0] != p[1]) { 42298943Sluigi printf("-"); 42398943Sluigi print_port(proto, p[1]); 42498943Sluigi } 42598943Sluigi sep = ","; 42698943Sluigi } 42798943Sluigi} 42898943Sluigi 42998943Sluigi/* 43098943Sluigi * Like strtol, but also translates service names into port numbers 43198943Sluigi * for some protocols. 43298943Sluigi * In particular: 43398943Sluigi * proto == -1 disables the protocol check; 43498943Sluigi * proto == IPPROTO_ETHERTYPE looks up an internal table 43598943Sluigi * proto == <some value in /etc/protocols> matches the values there. 436101628Sluigi * Returns *end == s in case the parameter is not found. 43798943Sluigi */ 43898943Sluigistatic int 43998943Sluigistrtoport(char *s, char **end, int base, int proto) 44098943Sluigi{ 441101628Sluigi char *p, *buf; 442101628Sluigi char *s1; 44398943Sluigi int i; 44498943Sluigi 445101628Sluigi *end = s; /* default - not found */ 44698943Sluigi if ( *s == '\0') 447101628Sluigi return 0; /* not found */ 448106505Smaxim 44998943Sluigi if (isdigit(*s)) 45098943Sluigi return strtol(s, end, base); 45198943Sluigi 45298943Sluigi /* 453101628Sluigi * find separator. '\\' escapes the next char. 45498943Sluigi */ 455101628Sluigi for (s1 = s; *s1 && (isalnum(*s1) || *s1 == '\\') ; s1++) 456101628Sluigi if (*s1 == '\\' && s1[1] != '\0') 457101628Sluigi s1++; 45898943Sluigi 459101628Sluigi buf = malloc(s1 - s + 1); 460101628Sluigi if (buf == NULL) 461101628Sluigi return 0; 462101628Sluigi 463101628Sluigi /* 464101628Sluigi * copy into a buffer skipping backslashes 465101628Sluigi */ 466101628Sluigi for (p = s, i = 0; p != s1 ; p++) 467101628Sluigi if ( *p != '\\') 468101628Sluigi buf[i++] = *p; 469101628Sluigi buf[i++] = '\0'; 470101628Sluigi 47198943Sluigi if (proto == IPPROTO_ETHERTYPE) { 472101628Sluigi i = match_token(ether_types, buf); 473101628Sluigi free(buf); 474101628Sluigi if (i != -1) { /* found */ 47598943Sluigi *end = s1; 47698943Sluigi return i; 47798943Sluigi } 47898943Sluigi } else { 47998943Sluigi struct protoent *pe = NULL; 48098943Sluigi struct servent *se; 48198943Sluigi 48298943Sluigi if (proto != 0) 48398943Sluigi pe = getprotobynumber(proto); 48498943Sluigi setservent(1); 485101628Sluigi se = getservbyname(buf, pe ? pe->p_name : NULL); 486101628Sluigi free(buf); 48798943Sluigi if (se != NULL) { 48898943Sluigi *end = s1; 48998943Sluigi return ntohs(se->s_port); 49098943Sluigi } 49198943Sluigi } 492101628Sluigi return 0; /* not found */ 49398943Sluigi} 49498943Sluigi 49598943Sluigi/* 49698943Sluigi * fill the body of the command with the list of port ranges. 49798943Sluigi * At the moment it only understands numeric ranges. 49898943Sluigi */ 49998943Sluigistatic int 50098943Sluigifill_newports(ipfw_insn_u16 *cmd, char *av, int proto) 50198943Sluigi{ 50298943Sluigi u_int16_t *p = cmd->ports; 50398943Sluigi int i = 0; 504102087Sluigi char *s = av; 50598943Sluigi 506102087Sluigi while (*s) { 50798943Sluigi u_int16_t a, b; 50898943Sluigi 50998943Sluigi a = strtoport(av, &s, 0, proto); 51098943Sluigi if (s == av) /* no parameter */ 51198943Sluigi break; 51298943Sluigi if (*s == '-') { /* a range */ 51398943Sluigi av = s+1; 51498943Sluigi b = strtoport(av, &s, 0, proto); 51598943Sluigi if (s == av) /* no parameter */ 51698943Sluigi break; 51798943Sluigi p[0] = a; 51898943Sluigi p[1] = b; 51998943Sluigi } else if (*s == ',' || *s == '\0' ) { 52098943Sluigi p[0] = p[1] = a; 521101978Sluigi } else { /* invalid separator */ 522101978Sluigi errx(EX_DATAERR, "invalid separator <%c> in <%s>\n", 523101978Sluigi *s, av); 524101978Sluigi } 525102087Sluigi i++; 526102087Sluigi p += 2; 52798943Sluigi av = s+1; 52898943Sluigi } 52998943Sluigi if (i > 0) { 53098943Sluigi if (i+1 > F_LEN_MASK) 531102087Sluigi errx(EX_DATAERR, "too many ports/ranges\n"); 53298943Sluigi cmd->o.len |= i+1; /* leave F_NOT and F_OR untouched */ 53398943Sluigi } 53498943Sluigi return i; 53598943Sluigi} 53698943Sluigi 53798943Sluigistatic struct _s_x icmpcodes[] = { 53898943Sluigi { "net", ICMP_UNREACH_NET }, 53998943Sluigi { "host", ICMP_UNREACH_HOST }, 54098943Sluigi { "protocol", ICMP_UNREACH_PROTOCOL }, 54198943Sluigi { "port", ICMP_UNREACH_PORT }, 54298943Sluigi { "needfrag", ICMP_UNREACH_NEEDFRAG }, 54398943Sluigi { "srcfail", ICMP_UNREACH_SRCFAIL }, 54498943Sluigi { "net-unknown", ICMP_UNREACH_NET_UNKNOWN }, 54598943Sluigi { "host-unknown", ICMP_UNREACH_HOST_UNKNOWN }, 54698943Sluigi { "isolated", ICMP_UNREACH_ISOLATED }, 54798943Sluigi { "net-prohib", ICMP_UNREACH_NET_PROHIB }, 54898943Sluigi { "host-prohib", ICMP_UNREACH_HOST_PROHIB }, 54998943Sluigi { "tosnet", ICMP_UNREACH_TOSNET }, 55098943Sluigi { "toshost", ICMP_UNREACH_TOSHOST }, 55198943Sluigi { "filter-prohib", ICMP_UNREACH_FILTER_PROHIB }, 55298943Sluigi { "host-precedence", ICMP_UNREACH_HOST_PRECEDENCE }, 55398943Sluigi { "precedence-cutoff", ICMP_UNREACH_PRECEDENCE_CUTOFF }, 55498943Sluigi { NULL, 0 } 55598943Sluigi}; 55698943Sluigi 55798943Sluigistatic void 55898943Sluigifill_reject_code(u_short *codep, char *str) 55998943Sluigi{ 56098943Sluigi int val; 56198943Sluigi char *s; 56298943Sluigi 56398943Sluigi val = strtoul(str, &s, 0); 56498943Sluigi if (s == str || *s != '\0' || val >= 0x100) 56598943Sluigi val = match_token(icmpcodes, str); 566102087Sluigi if (val < 0) 56798943Sluigi errx(EX_DATAERR, "unknown ICMP unreachable code ``%s''", str); 56898943Sluigi *codep = val; 56998943Sluigi return; 57098943Sluigi} 57198943Sluigi 57298943Sluigistatic void 57399475Sluigiprint_reject_code(u_int16_t code) 57498943Sluigi{ 57598943Sluigi char *s = match_value(icmpcodes, code); 57698943Sluigi 57798943Sluigi if (s != NULL) 57899475Sluigi printf("unreach %s", s); 57998943Sluigi else 58099475Sluigi printf("unreach %u", code); 58198943Sluigi} 58298943Sluigi 58398943Sluigi/* 58498943Sluigi * Returns the number of bits set (from left) in a contiguous bitmask, 58598943Sluigi * or -1 if the mask is not contiguous. 58698943Sluigi * XXX this needs a proper fix. 58798943Sluigi * This effectively works on masks in big-endian (network) format. 58898943Sluigi * when compiled on little endian architectures. 58998943Sluigi * 59098943Sluigi * First bit is bit 7 of the first byte -- note, for MAC addresses, 59198943Sluigi * the first bit on the wire is bit 0 of the first byte. 59298943Sluigi * len is the max length in bits. 59398943Sluigi */ 59498943Sluigistatic int 59598943Sluigicontigmask(u_char *p, int len) 59698943Sluigi{ 59798943Sluigi int i, n; 59898943Sluigi for (i=0; i<len ; i++) 59998943Sluigi if ( (p[i/8] & (1 << (7 - (i%8)))) == 0) /* first bit unset */ 60098943Sluigi break; 60198943Sluigi for (n=i+1; n < len; n++) 60298943Sluigi if ( (p[n/8] & (1 << (7 - (n%8)))) != 0) 60398943Sluigi return -1; /* mask not contiguous */ 60498943Sluigi return i; 60598943Sluigi} 60698943Sluigi 60798943Sluigi/* 60898943Sluigi * print flags set/clear in the two bitmasks passed as parameters. 60998943Sluigi * There is a specialized check for f_tcpflags. 61098943Sluigi */ 61198943Sluigistatic void 61298943Sluigiprint_flags(char *name, ipfw_insn *cmd, struct _s_x *list) 61398943Sluigi{ 61498943Sluigi char *comma=""; 61598943Sluigi int i; 61698943Sluigi u_char set = cmd->arg1 & 0xff; 61798943Sluigi u_char clear = (cmd->arg1 >> 8) & 0xff; 61898943Sluigi 61998943Sluigi if (list == f_tcpflags && set == TH_SYN && clear == TH_ACK) { 62098943Sluigi printf(" setup"); 62198943Sluigi return; 62298943Sluigi } 62398943Sluigi 62498943Sluigi printf(" %s ", name); 62598943Sluigi for (i=0; list[i].x != 0; i++) { 62698943Sluigi if (set & list[i].x) { 62798943Sluigi set &= ~list[i].x; 62898943Sluigi printf("%s%s", comma, list[i].s); 62998943Sluigi comma = ","; 63098943Sluigi } 63198943Sluigi if (clear & list[i].x) { 63298943Sluigi clear &= ~list[i].x; 63398943Sluigi printf("%s!%s", comma, list[i].s); 63498943Sluigi comma = ","; 63598943Sluigi } 63698943Sluigi } 63798943Sluigi} 63898943Sluigi 63998943Sluigi/* 64098943Sluigi * Print the ip address contained in a command. 64198943Sluigi */ 64298943Sluigistatic void 643102087Sluigiprint_ip(ipfw_insn_ip *cmd, char *s) 64498943Sluigi{ 64598943Sluigi struct hostent *he = NULL; 64698943Sluigi int mb; 64798943Sluigi 648102087Sluigi printf("%s%s ", cmd->o.len & F_NOT ? " not": "", s); 64998943Sluigi 65098943Sluigi if (cmd->o.opcode == O_IP_SRC_ME || cmd->o.opcode == O_IP_DST_ME) { 65198943Sluigi printf("me"); 65298943Sluigi return; 65398943Sluigi } 65498943Sluigi if (cmd->o.opcode == O_IP_SRC_SET || cmd->o.opcode == O_IP_DST_SET) { 65598943Sluigi u_int32_t x, *d; 65698943Sluigi int i; 65798943Sluigi char comma = '{'; 65898943Sluigi 65998943Sluigi x = cmd->o.arg1 - 1; 66098943Sluigi x = htonl( ~x ); 66198943Sluigi cmd->addr.s_addr = htonl(cmd->addr.s_addr); 66298943Sluigi printf("%s/%d", inet_ntoa(cmd->addr), 66398943Sluigi contigmask((u_char *)&x, 32)); 66498943Sluigi x = cmd->addr.s_addr = htonl(cmd->addr.s_addr); 66598943Sluigi x &= 0xff; /* base */ 66698943Sluigi d = (u_int32_t *)&(cmd->mask); 66798943Sluigi for (i=0; i < cmd->o.arg1; i++) 66898943Sluigi if (d[ i/32] & (1<<(i & 31))) { 66998943Sluigi printf("%c%d", comma, i+x); 67098943Sluigi comma = ','; 67198943Sluigi } 67298943Sluigi printf("}"); 67398943Sluigi return; 67498943Sluigi } 67598943Sluigi if (cmd->o.opcode == O_IP_SRC || cmd->o.opcode == O_IP_DST) 67698943Sluigi mb = 32; 67798943Sluigi else 67898943Sluigi mb = contigmask((u_char *)&(cmd->mask.s_addr), 32); 67998943Sluigi if (mb == 32 && do_resolv) 68098943Sluigi he = gethostbyaddr((char *)&(cmd->addr.s_addr), 68198943Sluigi sizeof(u_long), AF_INET); 68298943Sluigi if (he != NULL) /* resolved to name */ 68398943Sluigi printf("%s", he->h_name); 68498943Sluigi else if (mb == 0) /* any */ 68598943Sluigi printf("any"); 68698943Sluigi else { /* numeric IP followed by some kind of mask */ 68798943Sluigi printf("%s", inet_ntoa(cmd->addr)); 68898943Sluigi if (mb < 0) 68998943Sluigi printf(":%s", inet_ntoa(cmd->mask)); 69098943Sluigi else if (mb < 32) 69198943Sluigi printf("/%d", mb); 69298943Sluigi } 69398943Sluigi} 69498943Sluigi 69598943Sluigi/* 69698943Sluigi * prints a MAC address/mask pair 69798943Sluigi */ 69898943Sluigistatic void 69998943Sluigiprint_mac(u_char *addr, u_char *mask) 70098943Sluigi{ 70198943Sluigi int l = contigmask(mask, 48); 70298943Sluigi 70398943Sluigi if (l == 0) 70498943Sluigi printf(" any"); 70598943Sluigi else { 70698943Sluigi printf(" %02x:%02x:%02x:%02x:%02x:%02x", 70798943Sluigi addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 70898943Sluigi if (l == -1) 70998943Sluigi printf("&%02x:%02x:%02x:%02x:%02x:%02x", 71098943Sluigi mask[0], mask[1], mask[2], 71198943Sluigi mask[3], mask[4], mask[5]); 71298943Sluigi else if (l < 48) 71398943Sluigi printf("/%d", l); 71498943Sluigi } 71598943Sluigi} 71698943Sluigi 71799475Sluigistatic void 71899475Sluigifill_icmptypes(ipfw_insn_u32 *cmd, char *av) 71999475Sluigi{ 72099475Sluigi u_int8_t type; 72198943Sluigi 72299475Sluigi cmd->d[0] = 0; 72399475Sluigi while (*av) { 72499475Sluigi if (*av == ',') 72599475Sluigi av++; 72699475Sluigi 72799475Sluigi type = strtoul(av, &av, 0); 72899475Sluigi 72999475Sluigi if (*av != ',' && *av != '\0') 73099475Sluigi errx(EX_DATAERR, "invalid ICMP type"); 73199475Sluigi 73299475Sluigi if (type > 31) 73399475Sluigi errx(EX_DATAERR, "ICMP type out of range"); 73499475Sluigi 73599475Sluigi cmd->d[0] |= 1 << type; 73699475Sluigi } 73799475Sluigi cmd->o.opcode = O_ICMPTYPE; 73899475Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 73999475Sluigi} 74099475Sluigi 74199475Sluigistatic void 74299475Sluigiprint_icmptypes(ipfw_insn_u32 *cmd) 74399475Sluigi{ 74499475Sluigi int i; 74599475Sluigi char sep= ' '; 74699475Sluigi 74799475Sluigi printf(" icmptypes"); 74899475Sluigi for (i = 0; i < 32; i++) { 74999475Sluigi if ( (cmd->d[0] & (1 << (i))) == 0) 75099475Sluigi continue; 75199475Sluigi printf("%c%d", sep, i); 75299475Sluigi sep = ','; 75399475Sluigi } 75499475Sluigi} 75599475Sluigi 75698943Sluigi/* 75798943Sluigi * show_ipfw() prints the body of an ipfw rule. 75898943Sluigi * Because the standard rule has at least proto src_ip dst_ip, we use 75998943Sluigi * a helper function to produce these entries if not provided explicitly. 760102087Sluigi * The first argument is the list of fields we have, the second is 761102087Sluigi * the list of fields we want to be printed. 762101978Sluigi * 763102087Sluigi * Special cases if we have provided a MAC header: 764102087Sluigi * + if the rule does not contain IP addresses/ports, do not print them; 765102087Sluigi * + if the rule does not contain an IP proto, print "all" instead of "ip"; 766102087Sluigi * 767102087Sluigi * Once we have 'have_options', IP header fields are printed as options. 76898943Sluigi */ 769101978Sluigi#define HAVE_PROTO 0x0001 770101978Sluigi#define HAVE_SRCIP 0x0002 771101978Sluigi#define HAVE_DSTIP 0x0004 772101978Sluigi#define HAVE_MAC 0x0008 773101978Sluigi#define HAVE_MACTYPE 0x0010 774102087Sluigi#define HAVE_OPTIONS 0x8000 77598943Sluigi 776101978Sluigi#define HAVE_IP (HAVE_PROTO | HAVE_SRCIP | HAVE_DSTIP) 77798943Sluigistatic void 778102087Sluigishow_prerequisites(int *flags, int want, int cmd) 77998943Sluigi{ 780102087Sluigi if ( (*flags & HAVE_IP) == HAVE_IP) 781102087Sluigi *flags |= HAVE_OPTIONS; 782102087Sluigi 783102087Sluigi if ( (*flags & (HAVE_MAC|HAVE_MACTYPE|HAVE_OPTIONS)) == HAVE_MAC && 784102087Sluigi cmd != O_MAC_TYPE) { 785102087Sluigi /* 786102087Sluigi * mac-type was optimized out by the compiler, 787102087Sluigi * restore it 788102087Sluigi */ 789102087Sluigi printf(" any"); 790102087Sluigi *flags |= HAVE_MACTYPE | HAVE_OPTIONS; 791102087Sluigi return; 792101978Sluigi } 793102087Sluigi if ( !(*flags & HAVE_OPTIONS)) { 794102087Sluigi if ( !(*flags & HAVE_PROTO) && (want & HAVE_PROTO)) 795102087Sluigi printf(" ip"); 796102087Sluigi if ( !(*flags & HAVE_SRCIP) && (want & HAVE_SRCIP)) 797102087Sluigi printf(" from any"); 798102087Sluigi if ( !(*flags & HAVE_DSTIP) && (want & HAVE_DSTIP)) 799102087Sluigi printf(" to any"); 800102087Sluigi } 80198943Sluigi *flags |= want; 80298943Sluigi} 80398943Sluigi 80498943Sluigistatic void 805112189Smaximshow_ipfw(struct ip_fw *rule, int pcwidth, int bcwidth) 80698943Sluigi{ 807107291Skeramida static int twidth = 0; 80898943Sluigi int l; 80998943Sluigi ipfw_insn *cmd; 81098943Sluigi int proto = 0; /* default */ 81198943Sluigi int flags = 0; /* prerequisites */ 81298943Sluigi ipfw_insn_log *logptr = NULL; /* set if we find an O_LOG */ 81398943Sluigi int or_block = 0; /* we are in an or block */ 81498943Sluigi 815105887Smux u_int32_t set_disable = rule->set_disable; 816101628Sluigi 817101628Sluigi if (set_disable & (1 << rule->set)) { /* disabled */ 818101628Sluigi if (!show_sets) 819101628Sluigi return; 820101628Sluigi else 821101628Sluigi printf("# DISABLED "); 822101628Sluigi } 82398943Sluigi printf("%05u ", rule->rulenum); 82498943Sluigi 82598943Sluigi if (do_acct) 826112189Smaxim printf("%*llu %*llu ", pcwidth, rule->pcnt, bcwidth, 827112189Smaxim rule->bcnt); 82898943Sluigi 82998943Sluigi if (do_time) { 830107291Skeramida char timestr[30]; 831107291Skeramida time_t t = (time_t)0; 832107291Skeramida 833107291Skeramida if (twidth == 0) { 834107291Skeramida strcpy(timestr, ctime(&t)); 835107291Skeramida *strchr(timestr, '\n') = '\0'; 836107291Skeramida twidth = strlen(timestr); 837107291Skeramida } 83898943Sluigi if (rule->timestamp) { 839107291Skeramida t = _long_to_time(rule->timestamp); 84098943Sluigi 84198943Sluigi strcpy(timestr, ctime(&t)); 84298943Sluigi *strchr(timestr, '\n') = '\0'; 84398943Sluigi printf("%s ", timestr); 84498943Sluigi } else { 845107291Skeramida printf("%*s", twidth, " "); 84698943Sluigi } 84798943Sluigi } 84898943Sluigi 849101628Sluigi if (show_sets) 850101628Sluigi printf("set %d ", rule->set); 851101628Sluigi 85298943Sluigi /* 853107289Sluigi * print the optional "match probability" 854107289Sluigi */ 855107289Sluigi if (rule->cmd_len > 0) { 856107289Sluigi cmd = rule->cmd ; 857107289Sluigi if (cmd->opcode == O_PROB) { 858107289Sluigi ipfw_insn_u32 *p = (ipfw_insn_u32 *)cmd; 859107289Sluigi double d = 1.0 * p->d[0]; 860107289Sluigi 861107289Sluigi d = (d / 0x7fffffff); 862107289Sluigi printf("prob %f ", d); 863107289Sluigi } 864107289Sluigi } 865107289Sluigi 866107289Sluigi /* 86798943Sluigi * first print actions 86898943Sluigi */ 86998943Sluigi for (l = rule->cmd_len - rule->act_ofs, cmd = ACTION_PTR(rule); 87098943Sluigi l > 0 ; l -= F_LEN(cmd), cmd += F_LEN(cmd)) { 87198943Sluigi switch(cmd->opcode) { 87298943Sluigi case O_CHECK_STATE: 87398943Sluigi printf("check-state"); 874102087Sluigi flags = HAVE_IP; /* avoid printing anything else */ 87598943Sluigi break; 87698943Sluigi 87798943Sluigi case O_ACCEPT: 87898943Sluigi printf("allow"); 87998943Sluigi break; 88098943Sluigi 88198943Sluigi case O_COUNT: 88298943Sluigi printf("count"); 88398943Sluigi break; 88498943Sluigi 88598943Sluigi case O_DENY: 88698943Sluigi printf("deny"); 88798943Sluigi break; 88898943Sluigi 88999475Sluigi case O_REJECT: 89099475Sluigi if (cmd->arg1 == ICMP_REJECT_RST) 89199475Sluigi printf("reset"); 89299475Sluigi else if (cmd->arg1 == ICMP_UNREACH_HOST) 89399475Sluigi printf("reject"); 89499475Sluigi else 89599475Sluigi print_reject_code(cmd->arg1); 89699475Sluigi break; 89799475Sluigi 89898943Sluigi case O_SKIPTO: 89998943Sluigi printf("skipto %u", cmd->arg1); 90098943Sluigi break; 90198943Sluigi 90298943Sluigi case O_PIPE: 90398943Sluigi printf("pipe %u", cmd->arg1); 90498943Sluigi break; 90598943Sluigi 90698943Sluigi case O_QUEUE: 90798943Sluigi printf("queue %u", cmd->arg1); 90898943Sluigi break; 90998943Sluigi 91098943Sluigi case O_DIVERT: 91198943Sluigi printf("divert %u", cmd->arg1); 91298943Sluigi break; 91398943Sluigi 91498943Sluigi case O_TEE: 91598943Sluigi printf("tee %u", cmd->arg1); 91698943Sluigi break; 91798943Sluigi 91898943Sluigi case O_FORWARD_IP: 91998943Sluigi { 92098943Sluigi ipfw_insn_sa *s = (ipfw_insn_sa *)cmd; 92198943Sluigi 92298943Sluigi printf("fwd %s", inet_ntoa(s->sa.sin_addr)); 92398943Sluigi if (s->sa.sin_port) 924103241Sluigi printf(",%d", s->sa.sin_port); 92598943Sluigi } 92698943Sluigi break; 92798943Sluigi 92898943Sluigi case O_LOG: /* O_LOG is printed last */ 92998943Sluigi logptr = (ipfw_insn_log *)cmd; 93098943Sluigi break; 93198943Sluigi 93298943Sluigi default: 93398943Sluigi printf("** unrecognized action %d len %d", 93498943Sluigi cmd->opcode, cmd->len); 93598943Sluigi } 93698943Sluigi } 93798943Sluigi if (logptr) { 93898943Sluigi if (logptr->max_log > 0) 93999909Sluigi printf(" log logamount %d", logptr->max_log); 94098943Sluigi else 94199909Sluigi printf(" log"); 94298943Sluigi } 943102087Sluigi 94498943Sluigi /* 945102087Sluigi * then print the body. 94698943Sluigi */ 947102087Sluigi if (rule->_pad & 1) { /* empty rules before options */ 948102098Sluigi if (!do_compact) 949102098Sluigi printf(" ip from any to any"); 950102087Sluigi flags |= HAVE_IP | HAVE_OPTIONS; 951102087Sluigi } 952102087Sluigi 95398943Sluigi for (l = rule->act_ofs, cmd = rule->cmd ; 95498943Sluigi l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 95599475Sluigi /* useful alias */ 95699475Sluigi ipfw_insn_u32 *cmd32 = (ipfw_insn_u32 *)cmd; 95798943Sluigi 958102087Sluigi show_prerequisites(&flags, 0, cmd->opcode); 959102087Sluigi 96098943Sluigi switch(cmd->opcode) { 961107289Sluigi case O_PROB: 962107289Sluigi break; /* done already */ 963107289Sluigi 96498943Sluigi case O_PROBE_STATE: 96598943Sluigi break; /* no need to print anything here */ 96698943Sluigi 96798943Sluigi case O_MACADDR2: { 96898943Sluigi ipfw_insn_mac *m = (ipfw_insn_mac *)cmd; 969102087Sluigi 970102087Sluigi if ((cmd->len & F_OR) && !or_block) 971102087Sluigi printf(" {"); 97298943Sluigi if (cmd->len & F_NOT) 97398943Sluigi printf(" not"); 974102087Sluigi printf(" MAC"); 975102087Sluigi flags |= HAVE_MAC; 97698943Sluigi print_mac( m->addr, m->mask); 97798943Sluigi print_mac( m->addr + 6, m->mask + 6); 97898943Sluigi } 97998943Sluigi break; 98098943Sluigi 98198943Sluigi case O_MAC_TYPE: 982102087Sluigi if ((cmd->len & F_OR) && !or_block) 983102087Sluigi printf(" {"); 984102087Sluigi print_newports((ipfw_insn_u16 *)cmd, IPPROTO_ETHERTYPE, 985102087Sluigi (flags & HAVE_OPTIONS) ? cmd->opcode : 0); 986102087Sluigi flags |= HAVE_MAC | HAVE_MACTYPE | HAVE_OPTIONS; 98798943Sluigi break; 98898943Sluigi 98998943Sluigi case O_IP_SRC: 99098943Sluigi case O_IP_SRC_MASK: 99198943Sluigi case O_IP_SRC_ME: 99298943Sluigi case O_IP_SRC_SET: 993102087Sluigi show_prerequisites(&flags, HAVE_PROTO, 0); 99498943Sluigi if (!(flags & HAVE_SRCIP)) 99598943Sluigi printf(" from"); 99698943Sluigi if ((cmd->len & F_OR) && !or_block) 99798943Sluigi printf(" {"); 998102087Sluigi print_ip((ipfw_insn_ip *)cmd, 999102087Sluigi (flags & HAVE_OPTIONS) ? " src-ip" : ""); 100098943Sluigi flags |= HAVE_SRCIP; 100198943Sluigi break; 100298943Sluigi 100398943Sluigi case O_IP_DST: 100498943Sluigi case O_IP_DST_MASK: 100598943Sluigi case O_IP_DST_ME: 100698943Sluigi case O_IP_DST_SET: 1007102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 100898943Sluigi if (!(flags & HAVE_DSTIP)) 100998943Sluigi printf(" to"); 101098943Sluigi if ((cmd->len & F_OR) && !or_block) 101198943Sluigi printf(" {"); 1012102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1013102087Sluigi (flags & HAVE_OPTIONS) ? " dst-ip" : ""); 101498943Sluigi flags |= HAVE_DSTIP; 101598943Sluigi break; 101698943Sluigi 101798943Sluigi case O_IP_DSTPORT: 1018102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 101998943Sluigi case O_IP_SRCPORT: 1020102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 1021101641Sluigi if ((cmd->len & F_OR) && !or_block) 1022101641Sluigi printf(" {"); 1023102087Sluigi print_newports((ipfw_insn_u16 *)cmd, proto, 1024102087Sluigi (flags & HAVE_OPTIONS) ? cmd->opcode : 0); 102598943Sluigi break; 102698943Sluigi 102798943Sluigi case O_PROTO: { 102898943Sluigi struct protoent *pe; 102998943Sluigi 103098943Sluigi if ((cmd->len & F_OR) && !or_block) 103198943Sluigi printf(" {"); 103298943Sluigi if (cmd->len & F_NOT) 103398943Sluigi printf(" not"); 103498943Sluigi proto = cmd->arg1; 103598943Sluigi pe = getprotobynumber(cmd->arg1); 1036102087Sluigi if (flags & HAVE_OPTIONS) 1037102087Sluigi printf(" proto"); 103898943Sluigi if (pe) 103998943Sluigi printf(" %s", pe->p_name); 104098943Sluigi else 104198943Sluigi printf(" %u", cmd->arg1); 104298943Sluigi } 104398943Sluigi flags |= HAVE_PROTO; 104498943Sluigi break; 1045106505Smaxim 104698943Sluigi default: /*options ... */ 1047102087Sluigi show_prerequisites(&flags, HAVE_IP | HAVE_OPTIONS, 0); 104898943Sluigi if ((cmd->len & F_OR) && !or_block) 104998943Sluigi printf(" {"); 105098943Sluigi if (cmd->len & F_NOT && cmd->opcode != O_IN) 105198943Sluigi printf(" not"); 105298943Sluigi switch(cmd->opcode) { 105398943Sluigi case O_FRAG: 105498943Sluigi printf(" frag"); 105598943Sluigi break; 105698943Sluigi 105798943Sluigi case O_IN: 105898943Sluigi printf(cmd->len & F_NOT ? " out" : " in"); 105998943Sluigi break; 106098943Sluigi 106198943Sluigi case O_LAYER2: 106298943Sluigi printf(" layer2"); 106398943Sluigi break; 106498943Sluigi case O_XMIT: 106598943Sluigi case O_RECV: 106698943Sluigi case O_VIA: { 106798943Sluigi char *s; 106898943Sluigi ipfw_insn_if *cmdif = (ipfw_insn_if *)cmd; 106998943Sluigi 107098943Sluigi if (cmd->opcode == O_XMIT) 107198943Sluigi s = "xmit"; 107298943Sluigi else if (cmd->opcode == O_RECV) 107398943Sluigi s = "recv"; 107498943Sluigi else if (cmd->opcode == O_VIA) 107598943Sluigi s = "via"; 107698943Sluigi if (cmdif->name[0] == '\0') 107799475Sluigi printf(" %s %s", s, 107899475Sluigi inet_ntoa(cmdif->p.ip)); 107998943Sluigi else if (cmdif->p.unit == -1) 108098943Sluigi printf(" %s %s*", s, cmdif->name); 108198943Sluigi else 108299475Sluigi printf(" %s %s%d", s, cmdif->name, 108399475Sluigi cmdif->p.unit); 108498943Sluigi } 108598943Sluigi break; 108698943Sluigi 108798943Sluigi case O_IPID: 108898943Sluigi printf(" ipid %u", cmd->arg1 ); 108998943Sluigi break; 109098943Sluigi 109198943Sluigi case O_IPTTL: 109298943Sluigi printf(" ipttl %u", cmd->arg1 ); 109398943Sluigi break; 109498943Sluigi 109598943Sluigi case O_IPVER: 109698943Sluigi printf(" ipver %u", cmd->arg1 ); 109798943Sluigi break; 109898943Sluigi 109999475Sluigi case O_IPPRECEDENCE: 110099475Sluigi printf(" ipprecedence %u", (cmd->arg1) >> 5 ); 110199475Sluigi break; 110299475Sluigi 110398943Sluigi case O_IPLEN: 110498943Sluigi printf(" iplen %u", cmd->arg1 ); 110598943Sluigi break; 110698943Sluigi 1107101116Sluigi case O_IPOPT: 110898943Sluigi print_flags("ipoptions", cmd, f_ipopts); 110998943Sluigi break; 111098943Sluigi 111199475Sluigi case O_IPTOS: 111299475Sluigi print_flags("iptos", cmd, f_iptos); 111399475Sluigi break; 111499475Sluigi 111599475Sluigi case O_ICMPTYPE: 111699475Sluigi print_icmptypes((ipfw_insn_u32 *)cmd); 111799475Sluigi break; 111899475Sluigi 111998943Sluigi case O_ESTAB: 112098943Sluigi printf(" established"); 112198943Sluigi break; 112298943Sluigi 112398943Sluigi case O_TCPFLAGS: 112498943Sluigi print_flags("tcpflags", cmd, f_tcpflags); 112598943Sluigi break; 112698943Sluigi 112798943Sluigi case O_TCPOPTS: 112898943Sluigi print_flags("tcpoptions", cmd, f_tcpopts); 112998943Sluigi break; 113098943Sluigi 113198943Sluigi case O_TCPWIN: 113298943Sluigi printf(" tcpwin %d", ntohs(cmd->arg1)); 113398943Sluigi break; 113498943Sluigi 113598943Sluigi case O_TCPACK: 113698943Sluigi printf(" tcpack %d", ntohl(cmd32->d[0])); 113798943Sluigi break; 113898943Sluigi 113998943Sluigi case O_TCPSEQ: 114098943Sluigi printf(" tcpseq %d", ntohl(cmd32->d[0])); 114198943Sluigi break; 114298943Sluigi 114398943Sluigi case O_UID: 114498943Sluigi { 114598943Sluigi struct passwd *pwd = getpwuid(cmd32->d[0]); 114698943Sluigi 114798943Sluigi if (pwd) 114898943Sluigi printf(" uid %s", pwd->pw_name); 114998943Sluigi else 115098943Sluigi printf(" uid %u", cmd32->d[0]); 115198943Sluigi } 115298943Sluigi break; 115398943Sluigi 115498943Sluigi case O_GID: 115598943Sluigi { 115698943Sluigi struct group *grp = getgrgid(cmd32->d[0]); 115798943Sluigi 115898943Sluigi if (grp) 115998943Sluigi printf(" gid %s", grp->gr_name); 116098943Sluigi else 116198943Sluigi printf(" gid %u", cmd32->d[0]); 116298943Sluigi } 116398943Sluigi break; 116498943Sluigi 116598943Sluigi case O_KEEP_STATE: 116698943Sluigi printf(" keep-state"); 116798943Sluigi break; 116898943Sluigi 116998943Sluigi case O_LIMIT: 117098943Sluigi { 117198943Sluigi struct _s_x *p = limit_masks; 117298943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 117398943Sluigi u_int8_t x = c->limit_mask; 117498943Sluigi char *comma = " "; 117598943Sluigi 117698943Sluigi printf(" limit"); 1177106505Smaxim for ( ; p->x != 0 ; p++) 117899909Sluigi if ((x & p->x) == p->x) { 117998943Sluigi x &= ~p->x; 118098943Sluigi printf("%s%s", comma, p->s); 118198943Sluigi comma = ","; 118298943Sluigi } 118398943Sluigi printf(" %d", c->conn_limit); 118498943Sluigi } 118598943Sluigi break; 118698943Sluigi 118798943Sluigi default: 118898943Sluigi printf(" [opcode %d len %d]", 118998943Sluigi cmd->opcode, cmd->len); 119098943Sluigi } 119198943Sluigi } 119298943Sluigi if (cmd->len & F_OR) { 119398943Sluigi printf(" or"); 119498943Sluigi or_block = 1; 119598943Sluigi } else if (or_block) { 119698943Sluigi printf(" }"); 119798943Sluigi or_block = 0; 119898943Sluigi } 119998943Sluigi } 1200102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 120198943Sluigi 120298943Sluigi printf("\n"); 120398943Sluigi} 120498943Sluigi 120598943Sluigistatic void 1206112189Smaximshow_dyn_ipfw(ipfw_dyn_rule *d, int pcwidth, int bcwidth) 120798943Sluigi{ 120898943Sluigi struct protoent *pe; 120998943Sluigi struct in_addr a; 121098943Sluigi 121198943Sluigi if (!do_expired) { 121298943Sluigi if (!d->expire && !(d->dyn_type == O_LIMIT_PARENT)) 121398943Sluigi return; 121498943Sluigi } 121598943Sluigi 1216112189Smaxim printf("%05d %*llu %*llu (%ds)", d->rulenum, pcwidth, d->pcnt, bcwidth, 1217112189Smaxim d->bcnt, d->expire); 121898943Sluigi switch (d->dyn_type) { 121998943Sluigi case O_LIMIT_PARENT: 122098943Sluigi printf(" PARENT %d", d->count); 122198943Sluigi break; 122298943Sluigi case O_LIMIT: 122398943Sluigi printf(" LIMIT"); 122498943Sluigi break; 122598943Sluigi case O_KEEP_STATE: /* bidir, no mask */ 1226106505Smaxim printf(" STATE"); 122798943Sluigi break; 122898943Sluigi } 122998943Sluigi 123098943Sluigi if ((pe = getprotobynumber(d->id.proto)) != NULL) 123198943Sluigi printf(" %s", pe->p_name); 123298943Sluigi else 123398943Sluigi printf(" proto %u", d->id.proto); 123498943Sluigi 123598943Sluigi a.s_addr = htonl(d->id.src_ip); 123698943Sluigi printf(" %s %d", inet_ntoa(a), d->id.src_port); 123798943Sluigi 123898943Sluigi a.s_addr = htonl(d->id.dst_ip); 123998943Sluigi printf(" <-> %s %d", inet_ntoa(a), d->id.dst_port); 124098943Sluigi printf("\n"); 124198943Sluigi} 124298943Sluigi 124398943Sluigiint 124498943Sluigisort_q(const void *pa, const void *pb) 124598943Sluigi{ 124698943Sluigi int rev = (do_sort < 0); 124798943Sluigi int field = rev ? -do_sort : do_sort; 124898943Sluigi long long res = 0; 124998943Sluigi const struct dn_flow_queue *a = pa; 125098943Sluigi const struct dn_flow_queue *b = pb; 125198943Sluigi 125298943Sluigi switch (field) { 125398943Sluigi case 1: /* pkts */ 125498943Sluigi res = a->len - b->len; 125598943Sluigi break; 125698943Sluigi case 2: /* bytes */ 125798943Sluigi res = a->len_bytes - b->len_bytes; 125898943Sluigi break; 125998943Sluigi 126098943Sluigi case 3: /* tot pkts */ 126198943Sluigi res = a->tot_pkts - b->tot_pkts; 126298943Sluigi break; 126398943Sluigi 126498943Sluigi case 4: /* tot bytes */ 126598943Sluigi res = a->tot_bytes - b->tot_bytes; 126698943Sluigi break; 126798943Sluigi } 126898943Sluigi if (res < 0) 126998943Sluigi res = -1; 127098943Sluigi if (res > 0) 127198943Sluigi res = 1; 127298943Sluigi return (int)(rev ? res : -res); 127398943Sluigi} 127498943Sluigi 127598943Sluigistatic void 127698943Sluigilist_queues(struct dn_flow_set *fs, struct dn_flow_queue *q) 127798943Sluigi{ 127898943Sluigi int l; 127998943Sluigi 128098943Sluigi printf(" mask: 0x%02x 0x%08x/0x%04x -> 0x%08x/0x%04x\n", 128198943Sluigi fs->flow_mask.proto, 128298943Sluigi fs->flow_mask.src_ip, fs->flow_mask.src_port, 128398943Sluigi fs->flow_mask.dst_ip, fs->flow_mask.dst_port); 128498943Sluigi if (fs->rq_elements == 0) 128598943Sluigi return; 128698943Sluigi 128798943Sluigi printf("BKT Prot ___Source IP/port____ " 128898943Sluigi "____Dest. IP/port____ Tot_pkt/bytes Pkt/Byte Drp\n"); 128998943Sluigi if (do_sort != 0) 129098943Sluigi heapsort(q, fs->rq_elements, sizeof *q, sort_q); 129198943Sluigi for (l = 0; l < fs->rq_elements; l++) { 129298943Sluigi struct in_addr ina; 129398943Sluigi struct protoent *pe; 129498943Sluigi 129598943Sluigi ina.s_addr = htonl(q[l].id.src_ip); 129698943Sluigi printf("%3d ", q[l].hash_slot); 129798943Sluigi pe = getprotobynumber(q[l].id.proto); 129898943Sluigi if (pe) 129998943Sluigi printf("%-4s ", pe->p_name); 130098943Sluigi else 130198943Sluigi printf("%4u ", q[l].id.proto); 130298943Sluigi printf("%15s/%-5d ", 130398943Sluigi inet_ntoa(ina), q[l].id.src_port); 130498943Sluigi ina.s_addr = htonl(q[l].id.dst_ip); 130598943Sluigi printf("%15s/%-5d ", 130698943Sluigi inet_ntoa(ina), q[l].id.dst_port); 130798943Sluigi printf("%4qu %8qu %2u %4u %3u\n", 130898943Sluigi q[l].tot_pkts, q[l].tot_bytes, 130998943Sluigi q[l].len, q[l].len_bytes, q[l].drops); 131098943Sluigi if (verbose) 131198943Sluigi printf(" S %20qd F %20qd\n", 131298943Sluigi q[l].S, q[l].F); 131398943Sluigi } 131498943Sluigi} 131598943Sluigi 131698943Sluigistatic void 131798943Sluigiprint_flowset_parms(struct dn_flow_set *fs, char *prefix) 131898943Sluigi{ 131998943Sluigi int l; 132098943Sluigi char qs[30]; 132198943Sluigi char plr[30]; 132298943Sluigi char red[90]; /* Display RED parameters */ 132398943Sluigi 132498943Sluigi l = fs->qsize; 132598943Sluigi if (fs->flags_fs & DN_QSIZE_IS_BYTES) { 132698943Sluigi if (l >= 8192) 132798943Sluigi sprintf(qs, "%d KB", l / 1024); 132898943Sluigi else 132998943Sluigi sprintf(qs, "%d B", l); 133098943Sluigi } else 133198943Sluigi sprintf(qs, "%3d sl.", l); 133298943Sluigi if (fs->plr) 133398943Sluigi sprintf(plr, "plr %f", 1.0 * fs->plr / (double)(0x7fffffff)); 133498943Sluigi else 133598943Sluigi plr[0] = '\0'; 133698943Sluigi if (fs->flags_fs & DN_IS_RED) /* RED parameters */ 133798943Sluigi sprintf(red, 133898943Sluigi "\n\t %cRED w_q %f min_th %d max_th %d max_p %f", 133998943Sluigi (fs->flags_fs & DN_IS_GENTLE_RED) ? 'G' : ' ', 134098943Sluigi 1.0 * fs->w_q / (double)(1 << SCALE_RED), 134198943Sluigi SCALE_VAL(fs->min_th), 134298943Sluigi SCALE_VAL(fs->max_th), 134398943Sluigi 1.0 * fs->max_p / (double)(1 << SCALE_RED)); 134498943Sluigi else 134598943Sluigi sprintf(red, "droptail"); 134698943Sluigi 134798943Sluigi printf("%s %s%s %d queues (%d buckets) %s\n", 134898943Sluigi prefix, qs, plr, fs->rq_elements, fs->rq_size, red); 134998943Sluigi} 135098943Sluigi 135198943Sluigistatic void 135298943Sluigilist_pipes(void *data, int nbytes, int ac, char *av[]) 135398943Sluigi{ 135498943Sluigi u_long rulenum; 135598943Sluigi void *next = data; 135698943Sluigi struct dn_pipe *p = (struct dn_pipe *) data; 135798943Sluigi struct dn_flow_set *fs; 135898943Sluigi struct dn_flow_queue *q; 135998943Sluigi int l; 136098943Sluigi 136198943Sluigi if (ac > 0) 136298943Sluigi rulenum = strtoul(*av++, NULL, 10); 136398943Sluigi else 136498943Sluigi rulenum = 0; 136598943Sluigi for (; nbytes >= sizeof *p; p = (struct dn_pipe *)next) { 136698943Sluigi double b = p->bandwidth; 136798943Sluigi char buf[30]; 136898943Sluigi char prefix[80]; 136998943Sluigi 137098943Sluigi if (p->next != (struct dn_pipe *)DN_IS_PIPE) 137198943Sluigi break; /* done with pipes, now queues */ 137298943Sluigi 137398943Sluigi /* 137498943Sluigi * compute length, as pipe have variable size 137598943Sluigi */ 137698943Sluigi l = sizeof(*p) + p->fs.rq_elements * sizeof(*q); 137798943Sluigi next = (void *)p + l; 137898943Sluigi nbytes -= l; 137998943Sluigi 138098943Sluigi if (rulenum != 0 && rulenum != p->pipe_nr) 138198943Sluigi continue; 138298943Sluigi 138398943Sluigi /* 138498943Sluigi * Print rate (or clocking interface) 138598943Sluigi */ 138698943Sluigi if (p->if_name[0] != '\0') 138798943Sluigi sprintf(buf, "%s", p->if_name); 138898943Sluigi else if (b == 0) 138998943Sluigi sprintf(buf, "unlimited"); 139098943Sluigi else if (b >= 1000000) 139198943Sluigi sprintf(buf, "%7.3f Mbit/s", b/1000000); 139298943Sluigi else if (b >= 1000) 139398943Sluigi sprintf(buf, "%7.3f Kbit/s", b/1000); 139498943Sluigi else 139598943Sluigi sprintf(buf, "%7.3f bit/s ", b); 139698943Sluigi 139798943Sluigi sprintf(prefix, "%05d: %s %4d ms ", 139898943Sluigi p->pipe_nr, buf, p->delay); 139998943Sluigi print_flowset_parms(&(p->fs), prefix); 140098943Sluigi if (verbose) 140198943Sluigi printf(" V %20qd\n", p->V >> MY_M); 1402106505Smaxim 140398943Sluigi q = (struct dn_flow_queue *)(p+1); 140498943Sluigi list_queues(&(p->fs), q); 140598943Sluigi } 140698943Sluigi for (fs = next; nbytes >= sizeof *fs; fs = next) { 140798943Sluigi char prefix[80]; 140898943Sluigi 140998943Sluigi if (fs->next != (struct dn_flow_set *)DN_IS_QUEUE) 141098943Sluigi break; 141198943Sluigi l = sizeof(*fs) + fs->rq_elements * sizeof(*q); 141298943Sluigi next = (void *)fs + l; 141398943Sluigi nbytes -= l; 141498943Sluigi q = (struct dn_flow_queue *)(fs+1); 141598943Sluigi sprintf(prefix, "q%05d: weight %d pipe %d ", 141698943Sluigi fs->fs_nr, fs->weight, fs->parent_nr); 141798943Sluigi print_flowset_parms(fs, prefix); 141898943Sluigi list_queues(fs, q); 141998943Sluigi } 142098943Sluigi} 142198943Sluigi 1422101978Sluigi/* 1423101978Sluigi * This one handles all set-related commands 1424101978Sluigi * ipfw set { show | enable | disable } 1425101978Sluigi * ipfw set swap X Y 1426101978Sluigi * ipfw set move X to Y 1427101978Sluigi * ipfw set move rule X to Y 1428101978Sluigi */ 142998943Sluigistatic void 1430101978Sluigisets_handler(int ac, char *av[]) 1431101978Sluigi{ 1432101978Sluigi u_int32_t set_disable, masks[2]; 1433101978Sluigi int i, nbytes; 1434101978Sluigi u_int16_t rulenum; 1435101978Sluigi u_int8_t cmd, new_set; 1436101978Sluigi 1437101978Sluigi ac--; 1438101978Sluigi av++; 1439101978Sluigi 1440101978Sluigi if (!ac) 1441101978Sluigi errx(EX_USAGE, "set needs command"); 1442101978Sluigi if (!strncmp(*av, "show", strlen(*av)) ) { 1443101978Sluigi void *data; 1444101978Sluigi char *msg; 1445101978Sluigi 1446101978Sluigi nbytes = sizeof(struct ip_fw); 1447101978Sluigi if ((data = malloc(nbytes)) == NULL) 1448101978Sluigi err(EX_OSERR, "malloc"); 1449101978Sluigi if (getsockopt(s, IPPROTO_IP, IP_FW_GET, data, &nbytes) < 0) 1450101978Sluigi err(EX_OSERR, "getsockopt(IP_FW_GET)"); 1451105887Smux set_disable = ((struct ip_fw *)data)->set_disable; 1452101978Sluigi 1453101978Sluigi for (i = 0, msg = "disable" ; i < 31; i++) 1454101978Sluigi if ( (set_disable & (1<<i))) { 1455101978Sluigi printf("%s %d", msg, i); 1456101978Sluigi msg = ""; 1457101978Sluigi } 1458101978Sluigi msg = (set_disable) ? " enable" : "enable"; 1459101978Sluigi for (i = 0; i < 31; i++) 1460101978Sluigi if ( !(set_disable & (1<<i))) { 1461101978Sluigi printf("%s %d", msg, i); 1462101978Sluigi msg = ""; 1463101978Sluigi } 1464101978Sluigi printf("\n"); 1465101978Sluigi } else if (!strncmp(*av, "swap", strlen(*av))) { 1466101978Sluigi ac--; av++; 1467101978Sluigi if (ac != 2) 1468101978Sluigi errx(EX_USAGE, "set swap needs 2 set numbers\n"); 1469101978Sluigi rulenum = atoi(av[0]); 1470101978Sluigi new_set = atoi(av[1]); 1471101978Sluigi if (!isdigit(*(av[0])) || rulenum > 30) 1472101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[0]); 1473101978Sluigi if (!isdigit(*(av[1])) || new_set > 30) 1474101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[1]); 1475101978Sluigi masks[0] = (4 << 24) | (new_set << 16) | (rulenum); 1476101978Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, 1477101978Sluigi masks, sizeof(u_int32_t)); 1478101978Sluigi } else if (!strncmp(*av, "move", strlen(*av))) { 1479101978Sluigi ac--; av++; 1480101978Sluigi if (ac && !strncmp(*av, "rule", strlen(*av))) { 1481101978Sluigi cmd = 2; 1482101978Sluigi ac--; av++; 1483101978Sluigi } else 1484101978Sluigi cmd = 3; 1485101978Sluigi if (ac != 3 || strncmp(av[1], "to", strlen(*av))) 1486101978Sluigi errx(EX_USAGE, "syntax: set move [rule] X to Y\n"); 1487101978Sluigi rulenum = atoi(av[0]); 1488101978Sluigi new_set = atoi(av[2]); 1489101978Sluigi if (!isdigit(*(av[0])) || (cmd == 3 && rulenum > 30) || 1490101978Sluigi (cmd == 2 && rulenum == 65535) ) 1491101978Sluigi errx(EX_DATAERR, "invalid source number %s\n", av[0]); 1492101978Sluigi if (!isdigit(*(av[2])) || new_set > 30) 1493101978Sluigi errx(EX_DATAERR, "invalid dest. set %s\n", av[1]); 1494101978Sluigi masks[0] = (cmd << 24) | (new_set << 16) | (rulenum); 1495101978Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, 1496101978Sluigi masks, sizeof(u_int32_t)); 1497101978Sluigi } else if (!strncmp(*av, "disable", strlen(*av)) || 1498101978Sluigi !strncmp(*av, "enable", strlen(*av)) ) { 1499101978Sluigi int which = !strncmp(*av, "enable", strlen(*av)) ? 1 : 0; 1500101978Sluigi 1501101978Sluigi ac--; av++; 1502101978Sluigi masks[0] = masks[1] = 0; 1503101978Sluigi 1504101978Sluigi while (ac) { 1505101978Sluigi if (isdigit(**av)) { 1506101978Sluigi i = atoi(*av); 1507101978Sluigi if (i < 0 || i > 30) 1508101978Sluigi errx(EX_DATAERR, 1509101978Sluigi "invalid set number %d\n", i); 1510101978Sluigi masks[which] |= (1<<i); 1511101978Sluigi } else if (!strncmp(*av, "disable", strlen(*av))) 1512101978Sluigi which = 0; 1513101978Sluigi else if (!strncmp(*av, "enable", strlen(*av))) 1514101978Sluigi which = 1; 1515101978Sluigi else 1516101978Sluigi errx(EX_DATAERR, 1517101978Sluigi "invalid set command %s\n", *av); 1518101978Sluigi av++; ac--; 1519101978Sluigi } 1520101978Sluigi if ( (masks[0] & masks[1]) != 0 ) 1521101978Sluigi errx(EX_DATAERR, 1522101978Sluigi "cannot enable and disable the same set\n"); 1523101978Sluigi 1524101978Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, masks, sizeof(masks)); 1525101978Sluigi if (i) 1526101978Sluigi warn("set enable/disable: setsockopt(IP_FW_DEL)"); 1527101978Sluigi } else 1528101978Sluigi errx(EX_USAGE, "invalid set command %s\n", *av); 1529101978Sluigi} 1530101978Sluigi 1531101978Sluigistatic void 1532109126Sdillonsysctl_handler(int ac, char *av[], int which) 1533109126Sdillon{ 1534109126Sdillon ac--; 1535109126Sdillon av++; 1536109126Sdillon 1537109126Sdillon if (*av == NULL) { 1538109126Sdillon warnx("missing keyword to enable/disable\n"); 1539109126Sdillon } else if (strncmp(*av, "firewall", strlen(*av)) == 0) { 1540109126Sdillon sysctlbyname("net.inet.ip.fw.enable", NULL, 0, &which, sizeof(which)); 1541109126Sdillon } else if (strncmp(*av, "one_pass", strlen(*av)) == 0) { 1542109126Sdillon sysctlbyname("net.inet.ip.fw.one_pass", NULL, 0, &which, sizeof(which)); 1543109126Sdillon } else if (strncmp(*av, "debug", strlen(*av)) == 0) { 1544109126Sdillon sysctlbyname("net.inet.ip.fw.debug", NULL, 0, &which, sizeof(which)); 1545109126Sdillon } else if (strncmp(*av, "verbose", strlen(*av)) == 0) { 1546109126Sdillon sysctlbyname("net.inet.ip.fw.verbose", NULL, 0, &which, sizeof(which)); 1547109126Sdillon } else if (strncmp(*av, "dyn_keepalive", strlen(*av)) == 0) { 1548109126Sdillon sysctlbyname("net.inet.ip.fw.dyn_keepalive", NULL, 0, &which, sizeof(which)); 1549109126Sdillon } else { 1550109126Sdillon warnx("unrecognize enable/disable keyword: %s\n", *av); 1551109126Sdillon } 1552109126Sdillon} 1553109126Sdillon 1554109126Sdillonstatic void 155598943Sluigilist(int ac, char *av[]) 155698943Sluigi{ 155798943Sluigi struct ip_fw *r; 155898943Sluigi ipfw_dyn_rule *dynrules, *d; 155998943Sluigi 156098943Sluigi void *lim, *data = NULL; 1561112189Smaxim int bcwidth, n, nbytes, nstat, ndyn, pcwidth, width; 156298943Sluigi int exitval = EX_OK; 156398943Sluigi int lac; 156498943Sluigi char **lav; 156598943Sluigi u_long rnum; 156698943Sluigi char *endptr; 156798943Sluigi int seen = 0; 156898943Sluigi 156998943Sluigi const int ocmd = do_pipe ? IP_DUMMYNET_GET : IP_FW_GET; 157098943Sluigi int nalloc = 1024; /* start somewhere... */ 157198943Sluigi 157298943Sluigi ac--; 157398943Sluigi av++; 157498943Sluigi 157598943Sluigi /* get rules or pipes from kernel, resizing array as necessary */ 157698943Sluigi nbytes = nalloc; 157798943Sluigi 157898943Sluigi while (nbytes >= nalloc) { 157998943Sluigi nalloc = nalloc * 2 + 200; 158098943Sluigi nbytes = nalloc; 158198943Sluigi if ((data = realloc(data, nbytes)) == NULL) 158298943Sluigi err(EX_OSERR, "realloc"); 158398943Sluigi if (getsockopt(s, IPPROTO_IP, ocmd, data, &nbytes) < 0) 158498943Sluigi err(EX_OSERR, "getsockopt(IP_%s_GET)", 158598943Sluigi do_pipe ? "DUMMYNET" : "FW"); 158698943Sluigi } 158798943Sluigi 158898943Sluigi if (do_pipe) { 158998943Sluigi list_pipes(data, nbytes, ac, av); 159098943Sluigi goto done; 159198943Sluigi } 159298943Sluigi 159398943Sluigi /* 159498943Sluigi * Count static rules. They have variable size so we 159598943Sluigi * need to scan the list to count them. 159698943Sluigi */ 159798943Sluigi for (nstat = 1, r = data, lim = data + nbytes; 159898943Sluigi r->rulenum < 65535 && (void *)r < lim; 159998943Sluigi ++nstat, r = (void *)r + RULESIZE(r) ) 160098943Sluigi ; /* nothing */ 160198943Sluigi 160298943Sluigi /* 160398943Sluigi * Count dynamic rules. This is easier as they have 160498943Sluigi * fixed size. 160598943Sluigi */ 160698943Sluigi r = (void *)r + RULESIZE(r); 160798943Sluigi dynrules = (ipfw_dyn_rule *)r ; 160898943Sluigi n = (void *)r - data; 160998943Sluigi ndyn = (nbytes - n) / sizeof *dynrules; 161098943Sluigi 1611112189Smaxim /* if showing stats, figure out column widths ahead of time */ 1612112189Smaxim bcwidth = pcwidth = 0; 1613112189Smaxim if (do_acct) { 1614112189Smaxim for (n = 0, r = data; n < nstat; 1615112189Smaxim n++, r = (void *)r + RULESIZE(r)) { 1616112189Smaxim /* packet counter */ 1617112189Smaxim width = snprintf(NULL, 0, "%llu", r->pcnt); 1618112189Smaxim if (width > pcwidth) 1619112189Smaxim pcwidth = width; 1620112189Smaxim 1621112189Smaxim /* byte counter */ 1622112189Smaxim width = snprintf(NULL, 0, "%llu", r->bcnt); 1623112189Smaxim if (width > bcwidth) 1624112189Smaxim bcwidth = width; 1625112189Smaxim } 1626112189Smaxim } 1627112189Smaxim if (do_dynamic && ndyn) { 1628112189Smaxim for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1629112189Smaxim width = snprintf(NULL, 0, "%llu", d->pcnt); 1630112189Smaxim if (width > pcwidth) 1631112189Smaxim pcwidth = width; 1632112189Smaxim 1633112189Smaxim width = snprintf(NULL, 0, "%llu", d->bcnt); 1634112189Smaxim if (width > bcwidth) 1635112189Smaxim bcwidth = width; 1636112189Smaxim } 1637112189Smaxim } 163898943Sluigi /* if no rule numbers were specified, list all rules */ 163998943Sluigi if (ac == 0) { 164098943Sluigi for (n = 0, r = data; n < nstat; 164198943Sluigi n++, r = (void *)r + RULESIZE(r) ) 1642112189Smaxim show_ipfw(r, pcwidth, bcwidth); 164398943Sluigi 164498943Sluigi if (do_dynamic && ndyn) { 164598943Sluigi printf("## Dynamic rules (%d):\n", ndyn); 164698943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) 1647112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 164898943Sluigi } 164998943Sluigi goto done; 165098943Sluigi } 165198943Sluigi 165298943Sluigi /* display specific rules requested on command line */ 165398943Sluigi 165498943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 165598943Sluigi /* convert command line rule # */ 165698943Sluigi rnum = strtoul(*lav++, &endptr, 10); 165798943Sluigi if (*endptr) { 165898943Sluigi exitval = EX_USAGE; 165998943Sluigi warnx("invalid rule number: %s", *(lav - 1)); 166098943Sluigi continue; 166198943Sluigi } 166298943Sluigi for (n = seen = 0, r = data; n < nstat; 166398943Sluigi n++, r = (void *)r + RULESIZE(r) ) { 166498943Sluigi if (r->rulenum > rnum) 166598943Sluigi break; 166698943Sluigi if (r->rulenum == rnum) { 1667112189Smaxim show_ipfw(r, pcwidth, bcwidth); 166898943Sluigi seen = 1; 166998943Sluigi } 167098943Sluigi } 167198943Sluigi if (!seen) { 167298943Sluigi /* give precedence to other error(s) */ 167398943Sluigi if (exitval == EX_OK) 167498943Sluigi exitval = EX_UNAVAILABLE; 167598943Sluigi warnx("rule %lu does not exist", rnum); 167698943Sluigi } 167798943Sluigi } 167898943Sluigi 167998943Sluigi if (do_dynamic && ndyn) { 168098943Sluigi printf("## Dynamic rules:\n"); 168198943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 168298943Sluigi rnum = strtoul(*lav++, &endptr, 10); 168398943Sluigi if (*endptr) 168498943Sluigi /* already warned */ 168598943Sluigi continue; 168698943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1687105887Smux if (d->rulenum > rnum) 168898943Sluigi break; 1689105887Smux if (d->rulenum == rnum) 1690112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 169198943Sluigi } 169298943Sluigi } 169398943Sluigi } 169498943Sluigi 169598943Sluigi ac = 0; 169698943Sluigi 169798943Sluigidone: 169898943Sluigi free(data); 169998943Sluigi 170098943Sluigi if (exitval != EX_OK) 170198943Sluigi exit(exitval); 170298943Sluigi} 170398943Sluigi 170498943Sluigistatic void 170598943Sluigishow_usage(void) 170698943Sluigi{ 170798943Sluigi fprintf(stderr, "usage: ipfw [options]\n" 170898943Sluigi" add [number] rule\n" 170998943Sluigi" pipe number config [pipeconfig]\n" 171098943Sluigi" queue number config [queueconfig]\n" 171198943Sluigi" [pipe] flush\n" 171298943Sluigi" [pipe] delete number ...\n" 171398943Sluigi" [pipe] {list|show} [number ...]\n" 171498943Sluigi" {zero|resetlog} [number ...]\n" 171598943Sluigi"do \"ipfw -h\" or see ipfw manpage for details\n" 171698943Sluigi); 171798943Sluigi 171898943Sluigi exit(EX_USAGE); 171998943Sluigi} 172098943Sluigi 172198943Sluigistatic void 172298943Sluigihelp(void) 172398943Sluigi{ 1724106505Smaxim 172598943Sluigi fprintf(stderr, "ipfw syntax summary:\n" 172698943Sluigi"ipfw add [N] [prob {0..1}] ACTION [log [logamount N]] ADDR OPTIONS\n" 172798943Sluigi"ipfw {pipe|queue} N config BODY\n" 172898943Sluigi"ipfw [pipe] {zero|delete|show} [N{,N}]\n" 172998943Sluigi"\n" 173098943Sluigi"RULE: [1..] [PROB] BODY\n" 173198943Sluigi"RULENUM: INTEGER(1..65534)\n" 173298943Sluigi"PROB: prob REAL(0..1)\n" 173398943Sluigi"BODY: check-state [LOG] (no body) |\n" 173498943Sluigi" ACTION [LOG] MATCH_ADDR [OPTION_LIST]\n" 173598943Sluigi"ACTION: check-state | allow | count | deny | reject | skipto N |\n" 173698943Sluigi" {divert|tee} PORT | forward ADDR | pipe N | queue N\n" 173798943Sluigi"ADDR: [ MAC dst src ether_type ] \n" 173898943Sluigi" [ from IPLIST [ PORT ] to IPLIST [ PORTLIST ] ]\n" 173998943Sluigi"IPLIST: IPADDR | ( IPADDR or ... or IPADDR )\n" 174098943Sluigi"IPADDR: [not] { any | me | ip | ip/bits | ip:mask | ip/bits{x,y,z} }\n" 174198943Sluigi"OPTION_LIST: OPTION [,OPTION_LIST]\n" 174298943Sluigi); 174398943Sluigiexit(0); 174498943Sluigi} 174598943Sluigi 174698943Sluigi 174798943Sluigistatic int 174898943Sluigilookup_host (char *host, struct in_addr *ipaddr) 174998943Sluigi{ 175098943Sluigi struct hostent *he; 175198943Sluigi 175298943Sluigi if (!inet_aton(host, ipaddr)) { 175398943Sluigi if ((he = gethostbyname(host)) == NULL) 175498943Sluigi return(-1); 175598943Sluigi *ipaddr = *(struct in_addr *)he->h_addr_list[0]; 175698943Sluigi } 175798943Sluigi return(0); 175898943Sluigi} 175998943Sluigi 176098943Sluigi/* 176198943Sluigi * fills the addr and mask fields in the instruction as appropriate from av. 176298943Sluigi * Update length as appropriate. 176398943Sluigi * The following formats are allowed: 176498943Sluigi * any matches any IP. Actually returns an empty instruction. 176598943Sluigi * me returns O_IP_*_ME 176698943Sluigi * 1.2.3.4 single IP address 176798943Sluigi * 1.2.3.4:5.6.7.8 address:mask 176898943Sluigi * 1.2.3.4/24 address/mask 176998943Sluigi * 1.2.3.4/26{1,6,5,4,23} set of addresses in a subnet 177098943Sluigi */ 177198943Sluigistatic void 177298943Sluigifill_ip(ipfw_insn_ip *cmd, char *av) 177398943Sluigi{ 177498943Sluigi char *p = 0, md = 0; 177598943Sluigi u_int32_t i; 177698943Sluigi 177798943Sluigi cmd->o.len &= ~F_LEN_MASK; /* zero len */ 177898943Sluigi 177998943Sluigi if (!strncmp(av, "any", strlen(av))) 178098943Sluigi return; 178198943Sluigi 178298943Sluigi if (!strncmp(av, "me", strlen(av))) { 178398943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn); 178498943Sluigi return; 178598943Sluigi } 178698943Sluigi 178798943Sluigi p = strchr(av, '/'); 178898943Sluigi if (!p) 178998943Sluigi p = strchr(av, ':'); 179098943Sluigi if (p) { 179198943Sluigi md = *p; 179298943Sluigi *p++ = '\0'; 179398943Sluigi } 179498943Sluigi 179598943Sluigi if (lookup_host(av, &cmd->addr) != 0) 179698943Sluigi errx(EX_NOHOST, "hostname ``%s'' unknown", av); 179798943Sluigi switch (md) { 179898943Sluigi case ':': 179998943Sluigi if (!inet_aton(p, &cmd->mask)) 180098943Sluigi errx(EX_DATAERR, "bad netmask ``%s''", p); 180198943Sluigi break; 180298943Sluigi case '/': 180398943Sluigi i = atoi(p); 180498943Sluigi if (i == 0) 180598943Sluigi cmd->mask.s_addr = htonl(0); 180698943Sluigi else if (i > 32) 180798943Sluigi errx(EX_DATAERR, "bad width ``%s''", p); 180898943Sluigi else 180998943Sluigi cmd->mask.s_addr = htonl(~0 << (32 - i)); 181098943Sluigi break; 181198943Sluigi default: 181298943Sluigi cmd->mask.s_addr = htonl(~0); 181398943Sluigi break; 181498943Sluigi } 181598943Sluigi cmd->addr.s_addr &= cmd->mask.s_addr; 181698943Sluigi /* 181798943Sluigi * now look if we have a set of addresses. They are stored as follows: 181898943Sluigi * arg1 is the set size (powers of 2, 2..256) 181998943Sluigi * addr is the base address IN HOST FORMAT 182098943Sluigi * mask.. is an array of u_int32_t with bits set. 182198943Sluigi */ 182298943Sluigi if (p) 182398943Sluigi p = strchr(p, '{'); 182498943Sluigi if (p) { /* fetch addresses */ 182598943Sluigi u_int32_t *d; 182698943Sluigi int low, high; 182798943Sluigi int i = contigmask((u_char *)&(cmd->mask), 32); 182898943Sluigi 182998943Sluigi if (i < 24 || i > 31) { 183098943Sluigi fprintf(stderr, "invalid set with mask %d\n", 183198943Sluigi i); 183298943Sluigi exit(0); 183398943Sluigi } 183498943Sluigi cmd->o.arg1 = 1<<(32-i); 183598943Sluigi cmd->addr.s_addr = ntohl(cmd->addr.s_addr); 183698943Sluigi d = (u_int32_t *)&cmd->mask; 183798943Sluigi cmd->o.opcode = O_IP_DST_SET; /* default */ 183898943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32) + (cmd->o.arg1+31)/32; 1839101117Sluigi for (i = 0; i < (cmd->o.arg1+31)/32 ; i++) 184098943Sluigi d[i] = 0; /* clear masks */ 184198943Sluigi 184298943Sluigi av = p+1; 184398943Sluigi low = cmd->addr.s_addr & 0xff; 184498943Sluigi high = low + cmd->o.arg1 - 1; 184598943Sluigi while (isdigit(*av)) { 184698943Sluigi char *s; 184798943Sluigi u_int16_t a = strtol(av, &s, 0); 184898943Sluigi 184998943Sluigi if (s == av) /* no parameter */ 185098943Sluigi break; 185198943Sluigi if (a < low || a > high) { 185298943Sluigi fprintf(stderr, "addr %d out of range [%d-%d]\n", 185398943Sluigi a, low, high); 185498943Sluigi exit(0); 185598943Sluigi } 185698943Sluigi a -= low; 185798943Sluigi d[ a/32] |= 1<<(a & 31); 185898943Sluigi if (*s != ',') 185998943Sluigi break; 186098943Sluigi av = s+1; 186198943Sluigi } 186298943Sluigi return; 186398943Sluigi } 186498943Sluigi 186598943Sluigi if (cmd->mask.s_addr == 0) { /* any */ 186698943Sluigi if (cmd->o.len & F_NOT) 186798943Sluigi errx(EX_DATAERR, "not any never matches"); 186898943Sluigi else /* useless, nuke it */ 186998943Sluigi return; 187098943Sluigi } else if (cmd->mask.s_addr == IP_MASK_ALL) /* one IP */ 187198943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 187298943Sluigi else /* addr/mask */ 187398943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_ip); 187498943Sluigi} 187598943Sluigi 187698943Sluigi 187798943Sluigi/* 187898943Sluigi * helper function to process a set of flags and set bits in the 187998943Sluigi * appropriate masks. 188098943Sluigi */ 188198943Sluigistatic void 188298943Sluigifill_flags(ipfw_insn *cmd, enum ipfw_opcodes opcode, 188398943Sluigi struct _s_x *flags, char *p) 188498943Sluigi{ 188598943Sluigi u_int8_t set=0, clear=0; 188698943Sluigi 188798943Sluigi while (p && *p) { 188898943Sluigi char *q; /* points to the separator */ 188998943Sluigi int val; 189098943Sluigi u_int8_t *which; /* mask we are working on */ 189198943Sluigi 189298943Sluigi if (*p == '!') { 189398943Sluigi p++; 189498943Sluigi which = &clear; 189598943Sluigi } else 189698943Sluigi which = &set; 189798943Sluigi q = strchr(p, ','); 189898943Sluigi if (q) 189998943Sluigi *q++ = '\0'; 190098943Sluigi val = match_token(flags, p); 190198943Sluigi if (val <= 0) 190298943Sluigi errx(EX_DATAERR, "invalid flag %s", p); 190398943Sluigi *which |= (u_int8_t)val; 190498943Sluigi p = q; 190598943Sluigi } 190698943Sluigi cmd->opcode = opcode; 190798943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | 1; 190898943Sluigi cmd->arg1 = (set & 0xff) | ( (clear & 0xff) << 8); 190998943Sluigi} 191098943Sluigi 191198943Sluigi 191298943Sluigistatic void 191398943Sluigidelete(int ac, char *av[]) 191498943Sluigi{ 1915101978Sluigi u_int32_t rulenum; 191698943Sluigi struct dn_pipe pipe; 191798943Sluigi int i; 191898943Sluigi int exitval = EX_OK; 1919101628Sluigi int do_set = 0; 192098943Sluigi 192198943Sluigi memset(&pipe, 0, sizeof pipe); 192298943Sluigi 192398943Sluigi av++; ac--; 1924101641Sluigi if (ac > 0 && !strncmp(*av, "set", strlen(*av))) { 1925101978Sluigi do_set = 1; /* delete set */ 1926101628Sluigi ac--; av++; 1927101978Sluigi } 192898943Sluigi 192998943Sluigi /* Rule number */ 193098943Sluigi while (ac && isdigit(**av)) { 193198943Sluigi i = atoi(*av); av++; ac--; 193298943Sluigi if (do_pipe) { 193398943Sluigi if (do_pipe == 1) 193498943Sluigi pipe.pipe_nr = i; 193598943Sluigi else 193698943Sluigi pipe.fs.fs_nr = i; 193798943Sluigi i = setsockopt(s, IPPROTO_IP, IP_DUMMYNET_DEL, 193898943Sluigi &pipe, sizeof pipe); 193998943Sluigi if (i) { 194098943Sluigi exitval = 1; 194198943Sluigi warn("rule %u: setsockopt(IP_DUMMYNET_DEL)", 194298943Sluigi do_pipe == 1 ? pipe.pipe_nr : 194398943Sluigi pipe.fs.fs_nr); 194498943Sluigi } 194598943Sluigi } else { 1946101978Sluigi rulenum = (i & 0xffff) | (do_set << 24); 194798943Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, &rulenum, 194898943Sluigi sizeof rulenum); 194998943Sluigi if (i) { 195098943Sluigi exitval = EX_UNAVAILABLE; 195198943Sluigi warn("rule %u: setsockopt(IP_FW_DEL)", 195298943Sluigi rulenum); 195398943Sluigi } 195498943Sluigi } 195598943Sluigi } 195698943Sluigi if (exitval != EX_OK) 195798943Sluigi exit(exitval); 195898943Sluigi} 195998943Sluigi 196098943Sluigi 196198943Sluigi/* 196298943Sluigi * fill the interface structure. We do not check the name as we can 196398943Sluigi * create interfaces dynamically, so checking them at insert time 196498943Sluigi * makes relatively little sense. 196598943Sluigi * A '*' following the name means any unit. 196698943Sluigi */ 196798943Sluigistatic void 196898943Sluigifill_iface(ipfw_insn_if *cmd, char *arg) 196998943Sluigi{ 197098943Sluigi cmd->name[0] = '\0'; 197198943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_if); 197298943Sluigi 197398943Sluigi /* Parse the interface or address */ 197498943Sluigi if (!strcmp(arg, "any")) 197598943Sluigi cmd->o.len = 0; /* effectively ignore this command */ 197698943Sluigi else if (!isdigit(*arg)) { 197798943Sluigi char *q; 197898943Sluigi 197998943Sluigi strncpy(cmd->name, arg, sizeof(cmd->name)); 198098943Sluigi cmd->name[sizeof(cmd->name) - 1] = '\0'; 198198943Sluigi /* find first digit or wildcard */ 198298943Sluigi for (q = cmd->name; *q && !isdigit(*q) && *q != '*'; q++) 198398943Sluigi continue; 198498943Sluigi cmd->p.unit = (*q == '*') ? -1 : atoi(q); 198598943Sluigi *q = '\0'; 198698943Sluigi } else if (!inet_aton(arg, &cmd->p.ip)) 198798943Sluigi errx(EX_DATAERR, "bad ip address ``%s''", arg); 198898943Sluigi} 198998943Sluigi 199098943Sluigi/* 199198943Sluigi * the following macro returns an error message if we run out of 199298943Sluigi * arguments. 199398943Sluigi */ 199498943Sluigi#define NEED1(msg) {if (!ac) errx(EX_USAGE, msg);} 199598943Sluigi 199698943Sluigistatic void 199798943Sluigiconfig_pipe(int ac, char **av) 199898943Sluigi{ 199998943Sluigi struct dn_pipe pipe; 200098943Sluigi int i; 200198943Sluigi char *end; 200298943Sluigi u_int32_t a; 200398943Sluigi void *par = NULL; 200498943Sluigi 200598943Sluigi memset(&pipe, 0, sizeof pipe); 200698943Sluigi 200798943Sluigi av++; ac--; 200898943Sluigi /* Pipe number */ 200998943Sluigi if (ac && isdigit(**av)) { 201098943Sluigi i = atoi(*av); av++; ac--; 201198943Sluigi if (do_pipe == 1) 201298943Sluigi pipe.pipe_nr = i; 201398943Sluigi else 201498943Sluigi pipe.fs.fs_nr = i; 201598943Sluigi } 201699475Sluigi while (ac > 0) { 201798943Sluigi double d; 201898943Sluigi int tok = match_token(dummynet_params, *av); 201998943Sluigi ac--; av++; 202098943Sluigi 202198943Sluigi switch(tok) { 2022101978Sluigi case TOK_NOERROR: 2023101978Sluigi pipe.fs.flags_fs |= DN_NOERROR; 2024101978Sluigi break; 2025101978Sluigi 202698943Sluigi case TOK_PLR: 202798943Sluigi NEED1("plr needs argument 0..1\n"); 202898943Sluigi d = strtod(av[0], NULL); 202998943Sluigi if (d > 1) 203098943Sluigi d = 1; 203198943Sluigi else if (d < 0) 203298943Sluigi d = 0; 203398943Sluigi pipe.fs.plr = (int)(d*0x7fffffff); 203498943Sluigi ac--; av++; 203598943Sluigi break; 203698943Sluigi 203798943Sluigi case TOK_QUEUE: 203898943Sluigi NEED1("queue needs queue size\n"); 203998943Sluigi end = NULL; 204098943Sluigi pipe.fs.qsize = strtoul(av[0], &end, 0); 204198943Sluigi if (*end == 'K' || *end == 'k') { 204298943Sluigi pipe.fs.flags_fs |= DN_QSIZE_IS_BYTES; 204398943Sluigi pipe.fs.qsize *= 1024; 204498943Sluigi } else if (*end == 'B' || !strncmp(end, "by", 2)) { 204598943Sluigi pipe.fs.flags_fs |= DN_QSIZE_IS_BYTES; 204698943Sluigi } 204798943Sluigi ac--; av++; 204898943Sluigi break; 204998943Sluigi 205098943Sluigi case TOK_BUCKETS: 205198943Sluigi NEED1("buckets needs argument\n"); 205298943Sluigi pipe.fs.rq_size = strtoul(av[0], NULL, 0); 205398943Sluigi ac--; av++; 205498943Sluigi break; 205598943Sluigi 205698943Sluigi case TOK_MASK: 205798943Sluigi NEED1("mask needs mask specifier\n"); 205898943Sluigi /* 205998943Sluigi * per-flow queue, mask is dst_ip, dst_port, 206098943Sluigi * src_ip, src_port, proto measured in bits 206198943Sluigi */ 206298943Sluigi par = NULL; 206398943Sluigi 206498943Sluigi pipe.fs.flow_mask.dst_ip = 0; 206598943Sluigi pipe.fs.flow_mask.src_ip = 0; 206698943Sluigi pipe.fs.flow_mask.dst_port = 0; 206798943Sluigi pipe.fs.flow_mask.src_port = 0; 206898943Sluigi pipe.fs.flow_mask.proto = 0; 206998943Sluigi end = NULL; 207098943Sluigi 207198943Sluigi while (ac >= 1) { 207298943Sluigi u_int32_t *p32 = NULL; 207398943Sluigi u_int16_t *p16 = NULL; 207498943Sluigi 207598943Sluigi tok = match_token(dummynet_params, *av); 207698943Sluigi ac--; av++; 207798943Sluigi switch(tok) { 207898943Sluigi case TOK_ALL: 207998943Sluigi /* 208098943Sluigi * special case, all bits significant 208198943Sluigi */ 208298943Sluigi pipe.fs.flow_mask.dst_ip = ~0; 208398943Sluigi pipe.fs.flow_mask.src_ip = ~0; 208498943Sluigi pipe.fs.flow_mask.dst_port = ~0; 208598943Sluigi pipe.fs.flow_mask.src_port = ~0; 208698943Sluigi pipe.fs.flow_mask.proto = ~0; 208798943Sluigi pipe.fs.flags_fs |= DN_HAVE_FLOW_MASK; 208898943Sluigi goto end_mask; 208998943Sluigi 209098943Sluigi case TOK_DSTIP: 209198943Sluigi p32 = &pipe.fs.flow_mask.dst_ip; 209298943Sluigi break; 209398943Sluigi 209498943Sluigi case TOK_SRCIP: 209598943Sluigi p32 = &pipe.fs.flow_mask.src_ip; 209698943Sluigi break; 209798943Sluigi 209898943Sluigi case TOK_DSTPORT: 209998943Sluigi p16 = &pipe.fs.flow_mask.dst_port; 210098943Sluigi break; 210198943Sluigi 210298943Sluigi case TOK_SRCPORT: 210398943Sluigi p16 = &pipe.fs.flow_mask.src_port; 210498943Sluigi break; 210598943Sluigi 210698943Sluigi case TOK_PROTO: 210798943Sluigi break; 210898943Sluigi 210998943Sluigi default: 211098943Sluigi ac++; av--; /* backtrack */ 211198943Sluigi goto end_mask; 211298943Sluigi } 211398943Sluigi if (ac < 1) 211498943Sluigi errx(EX_USAGE, "mask: value missing"); 211598943Sluigi if (*av[0] == '/') { 211698943Sluigi a = strtoul(av[0]+1, &end, 0); 211798943Sluigi a = (a == 32) ? ~0 : (1 << a) - 1; 2118106505Smaxim } else 211999909Sluigi a = strtoul(av[0], &end, 0); 212098943Sluigi if (p32 != NULL) 212198943Sluigi *p32 = a; 212298943Sluigi else if (p16 != NULL) { 212398943Sluigi if (a > 65535) 212498943Sluigi errx(EX_DATAERR, 212598943Sluigi "mask: must be 16 bit"); 212698943Sluigi *p16 = (u_int16_t)a; 212798943Sluigi } else { 212898943Sluigi if (a > 255) 212998943Sluigi errx(EX_DATAERR, 213098943Sluigi "mask: must be 8 bit"); 213198943Sluigi pipe.fs.flow_mask.proto = (u_int8_t)a; 213298943Sluigi } 213398943Sluigi if (a != 0) 213498943Sluigi pipe.fs.flags_fs |= DN_HAVE_FLOW_MASK; 213598943Sluigi ac--; av++; 213698943Sluigi } /* end while, config masks */ 213798943Sluigiend_mask: 213898943Sluigi break; 213998943Sluigi 214098943Sluigi case TOK_RED: 214198943Sluigi case TOK_GRED: 214298943Sluigi NEED1("red/gred needs w_q/min_th/max_th/max_p\n"); 214398943Sluigi pipe.fs.flags_fs |= DN_IS_RED; 214498943Sluigi if (tok == TOK_GRED) 214598943Sluigi pipe.fs.flags_fs |= DN_IS_GENTLE_RED; 214698943Sluigi /* 214798943Sluigi * the format for parameters is w_q/min_th/max_th/max_p 214898943Sluigi */ 214998943Sluigi if ((end = strsep(&av[0], "/"))) { 215098943Sluigi double w_q = strtod(end, NULL); 215198943Sluigi if (w_q > 1 || w_q <= 0) 215298943Sluigi errx(EX_DATAERR, "0 < w_q <= 1"); 215398943Sluigi pipe.fs.w_q = (int) (w_q * (1 << SCALE_RED)); 215498943Sluigi } 215598943Sluigi if ((end = strsep(&av[0], "/"))) { 215698943Sluigi pipe.fs.min_th = strtoul(end, &end, 0); 215798943Sluigi if (*end == 'K' || *end == 'k') 215898943Sluigi pipe.fs.min_th *= 1024; 215998943Sluigi } 216098943Sluigi if ((end = strsep(&av[0], "/"))) { 216198943Sluigi pipe.fs.max_th = strtoul(end, &end, 0); 216298943Sluigi if (*end == 'K' || *end == 'k') 216398943Sluigi pipe.fs.max_th *= 1024; 216498943Sluigi } 216598943Sluigi if ((end = strsep(&av[0], "/"))) { 216698943Sluigi double max_p = strtod(end, NULL); 216798943Sluigi if (max_p > 1 || max_p <= 0) 216898943Sluigi errx(EX_DATAERR, "0 < max_p <= 1"); 216998943Sluigi pipe.fs.max_p = (int)(max_p * (1 << SCALE_RED)); 217098943Sluigi } 217198943Sluigi ac--; av++; 217298943Sluigi break; 217398943Sluigi 217498943Sluigi case TOK_DROPTAIL: 217598943Sluigi pipe.fs.flags_fs &= ~(DN_IS_RED|DN_IS_GENTLE_RED); 217698943Sluigi break; 2177106505Smaxim 217898943Sluigi case TOK_BW: 217998943Sluigi NEED1("bw needs bandwidth or interface\n"); 218098943Sluigi if (do_pipe != 1) 218198943Sluigi errx(EX_DATAERR, "bandwidth only valid for pipes"); 218298943Sluigi /* 218398943Sluigi * set clocking interface or bandwidth value 218498943Sluigi */ 218598943Sluigi if (av[0][0] >= 'a' && av[0][0] <= 'z') { 218698943Sluigi int l = sizeof(pipe.if_name)-1; 218798943Sluigi /* interface name */ 218898943Sluigi strncpy(pipe.if_name, av[0], l); 218998943Sluigi pipe.if_name[l] = '\0'; 219098943Sluigi pipe.bandwidth = 0; 219198943Sluigi } else { 219298943Sluigi pipe.if_name[0] = '\0'; 219398943Sluigi pipe.bandwidth = strtoul(av[0], &end, 0); 219498943Sluigi if (*end == 'K' || *end == 'k') { 219598943Sluigi end++; 219698943Sluigi pipe.bandwidth *= 1000; 219798943Sluigi } else if (*end == 'M') { 219898943Sluigi end++; 219998943Sluigi pipe.bandwidth *= 1000000; 220098943Sluigi } 220198943Sluigi if (*end == 'B' || !strncmp(end, "by", 2)) 220298943Sluigi pipe.bandwidth *= 8; 220398943Sluigi if (pipe.bandwidth < 0) 220498943Sluigi errx(EX_DATAERR, "bandwidth too large"); 220598943Sluigi } 220698943Sluigi ac--; av++; 220798943Sluigi break; 220898943Sluigi 220998943Sluigi case TOK_DELAY: 221098943Sluigi if (do_pipe != 1) 221198943Sluigi errx(EX_DATAERR, "delay only valid for pipes"); 221298943Sluigi NEED1("delay needs argument 0..10000ms\n"); 221398943Sluigi pipe.delay = strtoul(av[0], NULL, 0); 221498943Sluigi ac--; av++; 221598943Sluigi break; 221698943Sluigi 221798943Sluigi case TOK_WEIGHT: 221898943Sluigi if (do_pipe == 1) 221998943Sluigi errx(EX_DATAERR,"weight only valid for queues"); 222098943Sluigi NEED1("weight needs argument 0..100\n"); 222198943Sluigi pipe.fs.weight = strtoul(av[0], &end, 0); 222298943Sluigi ac--; av++; 222398943Sluigi break; 222498943Sluigi 222598943Sluigi case TOK_PIPE: 222698943Sluigi if (do_pipe == 1) 222798943Sluigi errx(EX_DATAERR,"pipe only valid for queues"); 222898943Sluigi NEED1("pipe needs pipe_number\n"); 222998943Sluigi pipe.fs.parent_nr = strtoul(av[0], &end, 0); 223098943Sluigi ac--; av++; 223198943Sluigi break; 223298943Sluigi 223398943Sluigi default: 223498943Sluigi errx(EX_DATAERR, "unrecognised option ``%s''", *av); 223598943Sluigi } 223698943Sluigi } 223798943Sluigi if (do_pipe == 1) { 223898943Sluigi if (pipe.pipe_nr == 0) 223998943Sluigi errx(EX_DATAERR, "pipe_nr must be > 0"); 224098943Sluigi if (pipe.delay > 10000) 224198943Sluigi errx(EX_DATAERR, "delay must be < 10000"); 224298943Sluigi } else { /* do_pipe == 2, queue */ 224398943Sluigi if (pipe.fs.parent_nr == 0) 224498943Sluigi errx(EX_DATAERR, "pipe must be > 0"); 224598943Sluigi if (pipe.fs.weight >100) 224698943Sluigi errx(EX_DATAERR, "weight must be <= 100"); 224798943Sluigi } 224898943Sluigi if (pipe.fs.flags_fs & DN_QSIZE_IS_BYTES) { 224998943Sluigi if (pipe.fs.qsize > 1024*1024) 225098943Sluigi errx(EX_DATAERR, "queue size must be < 1MB"); 225198943Sluigi } else { 225298943Sluigi if (pipe.fs.qsize > 100) 225398943Sluigi errx(EX_DATAERR, "2 <= queue size <= 100"); 225498943Sluigi } 225598943Sluigi if (pipe.fs.flags_fs & DN_IS_RED) { 225698943Sluigi size_t len; 225798943Sluigi int lookup_depth, avg_pkt_size; 225898943Sluigi double s, idle, weight, w_q; 225998943Sluigi struct clockinfo clock; 226098943Sluigi int t; 226198943Sluigi 226298943Sluigi if (pipe.fs.min_th >= pipe.fs.max_th) 226398943Sluigi errx(EX_DATAERR, "min_th %d must be < than max_th %d", 226498943Sluigi pipe.fs.min_th, pipe.fs.max_th); 226598943Sluigi if (pipe.fs.max_th == 0) 226698943Sluigi errx(EX_DATAERR, "max_th must be > 0"); 226798943Sluigi 226898943Sluigi len = sizeof(int); 226998943Sluigi if (sysctlbyname("net.inet.ip.dummynet.red_lookup_depth", 227098943Sluigi &lookup_depth, &len, NULL, 0) == -1) 227198943Sluigi 227298943Sluigi errx(1, "sysctlbyname(\"%s\")", 227398943Sluigi "net.inet.ip.dummynet.red_lookup_depth"); 227498943Sluigi if (lookup_depth == 0) 227598943Sluigi errx(EX_DATAERR, "net.inet.ip.dummynet.red_lookup_depth" 227698943Sluigi " must be greater than zero"); 227798943Sluigi 227898943Sluigi len = sizeof(int); 227998943Sluigi if (sysctlbyname("net.inet.ip.dummynet.red_avg_pkt_size", 228098943Sluigi &avg_pkt_size, &len, NULL, 0) == -1) 228198943Sluigi 228298943Sluigi errx(1, "sysctlbyname(\"%s\")", 228398943Sluigi "net.inet.ip.dummynet.red_avg_pkt_size"); 228498943Sluigi if (avg_pkt_size == 0) 228598943Sluigi errx(EX_DATAERR, 228698943Sluigi "net.inet.ip.dummynet.red_avg_pkt_size must" 228798943Sluigi " be greater than zero"); 228898943Sluigi 228998943Sluigi len = sizeof(struct clockinfo); 229098943Sluigi if (sysctlbyname("kern.clockrate", &clock, &len, NULL, 0) == -1) 229198943Sluigi errx(1, "sysctlbyname(\"%s\")", "kern.clockrate"); 229298943Sluigi 229398943Sluigi /* 229498943Sluigi * Ticks needed for sending a medium-sized packet. 229598943Sluigi * Unfortunately, when we are configuring a WF2Q+ queue, we 229698943Sluigi * do not have bandwidth information, because that is stored 229798943Sluigi * in the parent pipe, and also we have multiple queues 229898943Sluigi * competing for it. So we set s=0, which is not very 229998943Sluigi * correct. But on the other hand, why do we want RED with 230098943Sluigi * WF2Q+ ? 230198943Sluigi */ 230298943Sluigi if (pipe.bandwidth==0) /* this is a WF2Q+ queue */ 230398943Sluigi s = 0; 230498943Sluigi else 230598943Sluigi s = clock.hz * avg_pkt_size * 8 / pipe.bandwidth; 230698943Sluigi 230798943Sluigi /* 230898943Sluigi * max idle time (in ticks) before avg queue size becomes 0. 230998943Sluigi * NOTA: (3/w_q) is approx the value x so that 231098943Sluigi * (1-w_q)^x < 10^-3. 231198943Sluigi */ 231298943Sluigi w_q = ((double)pipe.fs.w_q) / (1 << SCALE_RED); 231398943Sluigi idle = s * 3. / w_q; 231498943Sluigi pipe.fs.lookup_step = (int)idle / lookup_depth; 231598943Sluigi if (!pipe.fs.lookup_step) 231698943Sluigi pipe.fs.lookup_step = 1; 231798943Sluigi weight = 1 - w_q; 231898943Sluigi for (t = pipe.fs.lookup_step; t > 0; --t) 231998943Sluigi weight *= weight; 232098943Sluigi pipe.fs.lookup_weight = (int)(weight * (1 << SCALE_RED)); 232198943Sluigi } 232298943Sluigi i = setsockopt(s, IPPROTO_IP, IP_DUMMYNET_CONFIGURE, &pipe, 232398943Sluigi sizeof pipe); 232498943Sluigi if (i) 232598943Sluigi err(1, "setsockopt(%s)", "IP_DUMMYNET_CONFIGURE"); 232698943Sluigi} 232798943Sluigi 232898943Sluigistatic void 232998943Sluigiget_mac_addr_mask(char *p, u_char *addr, u_char *mask) 233098943Sluigi{ 233198943Sluigi int i, l; 233298943Sluigi 233398943Sluigi for (i=0; i<6; i++) 233498943Sluigi addr[i] = mask[i] = 0; 233598943Sluigi if (!strcmp(p, "any")) 233698943Sluigi return; 233798943Sluigi 233898943Sluigi for (i=0; *p && i<6;i++, p++) { 233998943Sluigi addr[i] = strtol(p, &p, 16); 234098943Sluigi if (*p != ':') /* we start with the mask */ 234198943Sluigi break; 234298943Sluigi } 234398943Sluigi if (*p == '/') { /* mask len */ 234498943Sluigi l = strtol(p+1, &p, 0); 234598943Sluigi for (i=0; l>0; l -=8, i++) 234698943Sluigi mask[i] = (l >=8) ? 0xff : (~0) << (8-l); 234798943Sluigi } else if (*p == '&') { /* mask */ 234898943Sluigi for (i=0, p++; *p && i<6;i++, p++) { 234998943Sluigi mask[i] = strtol(p, &p, 16); 235098943Sluigi if (*p != ':') 235198943Sluigi break; 235298943Sluigi } 235398943Sluigi } else if (*p == '\0') { 235498943Sluigi for (i=0; i<6; i++) 235598943Sluigi mask[i] = 0xff; 235698943Sluigi } 235798943Sluigi for (i=0; i<6; i++) 235898943Sluigi addr[i] &= mask[i]; 235998943Sluigi} 236098943Sluigi 236198943Sluigi/* 236298943Sluigi * helper function, updates the pointer to cmd with the length 236398943Sluigi * of the current command, and also cleans up the first word of 236498943Sluigi * the new command in case it has been clobbered before. 236598943Sluigi */ 236698943Sluigistatic ipfw_insn * 236798943Sluiginext_cmd(ipfw_insn *cmd) 236898943Sluigi{ 236998943Sluigi cmd += F_LEN(cmd); 237098943Sluigi bzero(cmd, sizeof(*cmd)); 237198943Sluigi return cmd; 237298943Sluigi} 237398943Sluigi 237498943Sluigi/* 237598943Sluigi * A function to fill simple commands of size 1. 237698943Sluigi * Existing flags are preserved. 237798943Sluigi */ 237898943Sluigistatic void 237998943Sluigifill_cmd(ipfw_insn *cmd, enum ipfw_opcodes opcode, int flags, u_int16_t arg) 238098943Sluigi{ 238198943Sluigi cmd->opcode = opcode; 238298943Sluigi cmd->len = ((cmd->len | flags) & (F_NOT | F_OR)) | 1; 238398943Sluigi cmd->arg1 = arg; 238498943Sluigi} 238598943Sluigi 238698943Sluigi/* 238798943Sluigi * Fetch and add the MAC address and type, with masks. This generates one or 238898943Sluigi * two microinstructions, and returns the pointer to the last one. 238998943Sluigi */ 239098943Sluigistatic ipfw_insn * 239198943Sluigiadd_mac(ipfw_insn *cmd, int ac, char *av[]) 239298943Sluigi{ 2393102087Sluigi ipfw_insn_mac *mac; 239498943Sluigi 2395102087Sluigi if (ac < 2) 2396102098Sluigi errx(EX_DATAERR, "MAC dst src"); 239798943Sluigi 239898943Sluigi cmd->opcode = O_MACADDR2; 239998943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | F_INSN_SIZE(ipfw_insn_mac); 240098943Sluigi 240198943Sluigi mac = (ipfw_insn_mac *)cmd; 2402101978Sluigi get_mac_addr_mask(av[0], mac->addr, mac->mask); /* dst */ 240398943Sluigi get_mac_addr_mask(av[1], &(mac->addr[6]), &(mac->mask[6])); /* src */ 2404102087Sluigi return cmd; 2405102087Sluigi} 240698943Sluigi 2407102087Sluigistatic ipfw_insn * 2408102087Sluigiadd_mactype(ipfw_insn *cmd, int ac, char *av) 2409102087Sluigi{ 2410102087Sluigi if (ac < 1) 2411102087Sluigi errx(EX_DATAERR, "missing MAC type"); 2412102087Sluigi if (strcmp(av, "any") != 0) { /* we have a non-null type */ 2413102087Sluigi fill_newports((ipfw_insn_u16 *)cmd, av, IPPROTO_ETHERTYPE); 241498943Sluigi cmd->opcode = O_MAC_TYPE; 2415102087Sluigi return cmd; 2416102087Sluigi } else 2417102087Sluigi return NULL; 2418102087Sluigi} 241998943Sluigi 2420102087Sluigistatic ipfw_insn * 2421102087Sluigiadd_proto(ipfw_insn *cmd, char *av) 2422102087Sluigi{ 2423102087Sluigi struct protoent *pe; 2424102087Sluigi u_char proto = 0; 2425102087Sluigi 2426102087Sluigi if (!strncmp(av, "all", strlen(av))) 2427102087Sluigi ; /* same as "ip" */ 2428102087Sluigi else if ((proto = atoi(av)) > 0) 2429102087Sluigi ; /* all done! */ 2430102087Sluigi else if ((pe = getprotobyname(av)) != NULL) 2431102087Sluigi proto = pe->p_proto; 2432102087Sluigi else 2433102098Sluigi return NULL; 2434102087Sluigi if (proto != IPPROTO_IP) 2435102087Sluigi fill_cmd(cmd, O_PROTO, 0, proto); 243698943Sluigi return cmd; 243798943Sluigi} 243898943Sluigi 2439102087Sluigistatic ipfw_insn * 2440102087Sluigiadd_srcip(ipfw_insn *cmd, char *av) 2441102087Sluigi{ 2442102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2443102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2444102087Sluigi cmd->opcode = O_IP_SRC_SET; 2445102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2446102087Sluigi cmd->opcode = O_IP_SRC_ME; 2447102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2448102087Sluigi cmd->opcode = O_IP_SRC; 2449102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_ip)) /* addr/mask */ 2450102087Sluigi cmd->opcode = O_IP_SRC_MASK; 2451102087Sluigi return cmd; 2452102087Sluigi} 2453102087Sluigi 2454102087Sluigistatic ipfw_insn * 2455102087Sluigiadd_dstip(ipfw_insn *cmd, char *av) 2456102087Sluigi{ 2457102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2458102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2459102087Sluigi ; 2460102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2461102087Sluigi cmd->opcode = O_IP_DST_ME; 2462102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2463102087Sluigi cmd->opcode = O_IP_DST; 2464102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_ip)) /* addr/mask */ 2465102087Sluigi cmd->opcode = O_IP_DST_MASK; 2466102087Sluigi return cmd; 2467102087Sluigi} 2468102087Sluigi 2469102087Sluigistatic ipfw_insn * 2470102087Sluigiadd_ports(ipfw_insn *cmd, char *av, u_char proto, int opcode) 2471102087Sluigi{ 2472102087Sluigi if (!strncmp(av, "any", strlen(av))) { 2473102087Sluigi return NULL; 2474102087Sluigi } else if (fill_newports((ipfw_insn_u16 *)cmd, av, proto)) { 2475102087Sluigi /* XXX todo: check that we have a protocol with ports */ 2476102087Sluigi cmd->opcode = opcode; 2477102087Sluigi return cmd; 2478102087Sluigi } 2479102087Sluigi return NULL; 2480102087Sluigi} 2481102087Sluigi 248298943Sluigi/* 248398943Sluigi * Parse arguments and assemble the microinstructions which make up a rule. 248498943Sluigi * Rules are added into the 'rulebuf' and then copied in the correct order 248598943Sluigi * into the actual rule. 248698943Sluigi * 248798943Sluigi * The syntax for a rule starts with the action, followed by an 248898943Sluigi * optional log action, and the various match patterns. 2489108533Sschweikh * In the assembled microcode, the first opcode must be an O_PROBE_STATE 249098943Sluigi * (generated if the rule includes a keep-state option), then the 249198943Sluigi * various match patterns, the "log" action, and the actual action. 2492106505Smaxim * 249398943Sluigi */ 249498943Sluigistatic void 249598943Sluigiadd(int ac, char *av[]) 249698943Sluigi{ 249798943Sluigi /* 249898943Sluigi * rules are added into the 'rulebuf' and then copied in 249998943Sluigi * the correct order into the actual rule. 250098943Sluigi * Some things that need to go out of order (prob, action etc.) 250198943Sluigi * go into actbuf[]. 250298943Sluigi */ 250398943Sluigi static u_int32_t rulebuf[255], actbuf[255], cmdbuf[255]; 250498943Sluigi 250598943Sluigi ipfw_insn *src, *dst, *cmd, *action, *prev; 2506102087Sluigi ipfw_insn *first_cmd; /* first match pattern */ 250798943Sluigi 250898943Sluigi struct ip_fw *rule; 250998943Sluigi 251098943Sluigi /* 251198943Sluigi * various flags used to record that we entered some fields. 251298943Sluigi */ 2513101116Sluigi ipfw_insn *have_state = NULL; /* check-state or keep-state */ 251498943Sluigi 251598943Sluigi int i; 251698943Sluigi 251798943Sluigi int open_par = 0; /* open parenthesis ( */ 251898943Sluigi 251998943Sluigi /* proto is here because it is used to fetch ports */ 252098943Sluigi u_char proto = IPPROTO_IP; /* default protocol */ 252198943Sluigi 2522107289Sluigi double match_prob = 1; /* match probability, default is always match */ 2523107289Sluigi 252498943Sluigi bzero(actbuf, sizeof(actbuf)); /* actions go here */ 252598943Sluigi bzero(cmdbuf, sizeof(cmdbuf)); 252698943Sluigi bzero(rulebuf, sizeof(rulebuf)); 252798943Sluigi 252898943Sluigi rule = (struct ip_fw *)rulebuf; 252998943Sluigi cmd = (ipfw_insn *)cmdbuf; 253098943Sluigi action = (ipfw_insn *)actbuf; 253198943Sluigi 253298943Sluigi av++; ac--; 253398943Sluigi 253498943Sluigi /* [rule N] -- Rule number optional */ 253598943Sluigi if (ac && isdigit(**av)) { 253698943Sluigi rule->rulenum = atoi(*av); 253798943Sluigi av++; 253898943Sluigi ac--; 253998943Sluigi } 254098943Sluigi 2541101628Sluigi /* [set N] -- set number (0..30), optional */ 2542101628Sluigi if (ac > 1 && !strncmp(*av, "set", strlen(*av))) { 2543101628Sluigi int set = strtoul(av[1], NULL, 10); 2544101628Sluigi if (set < 0 || set > 30) 2545101628Sluigi errx(EX_DATAERR, "illegal set %s", av[1]); 2546101628Sluigi rule->set = set; 2547101628Sluigi av += 2; ac -= 2; 2548101628Sluigi } 2549101628Sluigi 255098943Sluigi /* [prob D] -- match probability, optional */ 255198943Sluigi if (ac > 1 && !strncmp(*av, "prob", strlen(*av))) { 2552107289Sluigi match_prob = strtod(av[1], NULL); 255398943Sluigi 2554107289Sluigi if (match_prob <= 0 || match_prob > 1) 255598943Sluigi errx(EX_DATAERR, "illegal match prob. %s", av[1]); 255698943Sluigi av += 2; ac -= 2; 255798943Sluigi } 255898943Sluigi 255998943Sluigi /* action -- mandatory */ 256098943Sluigi NEED1("missing action"); 256198943Sluigi i = match_token(rule_actions, *av); 256298943Sluigi ac--; av++; 256398943Sluigi action->len = 1; /* default */ 256498943Sluigi switch(i) { 256598943Sluigi case TOK_CHECKSTATE: 2566101116Sluigi have_state = action; 256798943Sluigi action->opcode = O_CHECK_STATE; 256898943Sluigi break; 256998943Sluigi 257098943Sluigi case TOK_ACCEPT: 257198943Sluigi action->opcode = O_ACCEPT; 257298943Sluigi break; 257398943Sluigi 257498943Sluigi case TOK_DENY: 257598943Sluigi action->opcode = O_DENY; 257699475Sluigi action->arg1 = 0; 257798943Sluigi break; 257898943Sluigi 257999475Sluigi case TOK_REJECT: 258099475Sluigi action->opcode = O_REJECT; 258199475Sluigi action->arg1 = ICMP_UNREACH_HOST; 258299475Sluigi break; 258399475Sluigi 258499475Sluigi case TOK_RESET: 258599475Sluigi action->opcode = O_REJECT; 258699475Sluigi action->arg1 = ICMP_REJECT_RST; 258799475Sluigi break; 258899475Sluigi 258999475Sluigi case TOK_UNREACH: 259099475Sluigi action->opcode = O_REJECT; 259199475Sluigi NEED1("missing reject code"); 259299475Sluigi fill_reject_code(&action->arg1, *av); 259399475Sluigi ac--; av++; 259499475Sluigi break; 259599475Sluigi 259698943Sluigi case TOK_COUNT: 259798943Sluigi action->opcode = O_COUNT; 259898943Sluigi break; 259998943Sluigi 260098943Sluigi case TOK_QUEUE: 260198943Sluigi case TOK_PIPE: 260298943Sluigi action->len = F_INSN_SIZE(ipfw_insn_pipe); 260398943Sluigi case TOK_SKIPTO: 260498943Sluigi if (i == TOK_QUEUE) 260598943Sluigi action->opcode = O_QUEUE; 260698943Sluigi else if (i == TOK_PIPE) 260798943Sluigi action->opcode = O_PIPE; 260898943Sluigi else if (i == TOK_SKIPTO) 260998943Sluigi action->opcode = O_SKIPTO; 261098943Sluigi NEED1("missing skipto/pipe/queue number"); 261198943Sluigi action->arg1 = strtoul(*av, NULL, 10); 261298943Sluigi av++; ac--; 261398943Sluigi break; 261498943Sluigi 261598943Sluigi case TOK_DIVERT: 261698943Sluigi case TOK_TEE: 261798943Sluigi action->opcode = (i == TOK_DIVERT) ? O_DIVERT : O_TEE; 261898943Sluigi NEED1("missing divert/tee port"); 261998943Sluigi action->arg1 = strtoul(*av, NULL, 0); 262098943Sluigi if (action->arg1 == 0) { 262198943Sluigi struct servent *s; 262298943Sluigi setservent(1); 262398943Sluigi s = getservbyname(av[0], "divert"); 262498943Sluigi if (s != NULL) 262598943Sluigi action->arg1 = ntohs(s->s_port); 262698943Sluigi else 262798943Sluigi errx(EX_DATAERR, "illegal divert/tee port"); 262898943Sluigi } 262998943Sluigi ac--; av++; 263098943Sluigi break; 263198943Sluigi 263298943Sluigi case TOK_FORWARD: { 263398943Sluigi ipfw_insn_sa *p = (ipfw_insn_sa *)action; 263498943Sluigi char *s, *end; 263598943Sluigi 263698943Sluigi NEED1("missing forward address[:port]"); 263798943Sluigi 263898943Sluigi action->opcode = O_FORWARD_IP; 263998943Sluigi action->len = F_INSN_SIZE(ipfw_insn_sa); 264098943Sluigi 264198943Sluigi p->sa.sin_len = sizeof(struct sockaddr_in); 264298943Sluigi p->sa.sin_family = AF_INET; 264398943Sluigi p->sa.sin_port = 0; 264498943Sluigi /* 264598943Sluigi * locate the address-port separator (':' or ',') 264698943Sluigi */ 264798943Sluigi s = strchr(*av, ':'); 264898943Sluigi if (s == NULL) 264998943Sluigi s = strchr(*av, ','); 265098943Sluigi if (s != NULL) { 265198943Sluigi *(s++) = '\0'; 265298943Sluigi i = strtoport(s, &end, 0 /* base */, 0 /* proto */); 265398943Sluigi if (s == end) 265498943Sluigi errx(EX_DATAERR, 265598943Sluigi "illegal forwarding port ``%s''", s); 2656103241Sluigi p->sa.sin_port = (u_short)i; 265798943Sluigi } 265898943Sluigi lookup_host(*av, &(p->sa.sin_addr)); 265998943Sluigi } 266098943Sluigi ac--; av++; 266198943Sluigi break; 266298943Sluigi 266398943Sluigi default: 2664102087Sluigi errx(EX_DATAERR, "invalid action %s\n", av[-1]); 266598943Sluigi } 266698943Sluigi action = next_cmd(action); 266798943Sluigi 266898943Sluigi /* 266998943Sluigi * [log [logamount N]] -- log, optional 267098943Sluigi * 267198943Sluigi * If exists, it goes first in the cmdbuf, but then it is 267298943Sluigi * skipped in the copy section to the end of the buffer. 267398943Sluigi */ 267498943Sluigi if (ac && !strncmp(*av, "log", strlen(*av))) { 267598943Sluigi ipfw_insn_log *c = (ipfw_insn_log *)cmd; 267698943Sluigi 267798943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_log); 267898943Sluigi cmd->opcode = O_LOG; 267998943Sluigi av++; ac--; 268098943Sluigi if (ac && !strncmp(*av, "logamount", strlen(*av))) { 268198943Sluigi ac--; av++; 268298943Sluigi NEED1("logamount requires argument"); 268398943Sluigi c->max_log = atoi(*av); 268498943Sluigi if (c->max_log < 0) 268598943Sluigi errx(EX_DATAERR, "logamount must be positive"); 268698943Sluigi ac--; av++; 268798943Sluigi } 268898943Sluigi cmd = next_cmd(cmd); 268998943Sluigi } 269098943Sluigi 2691101116Sluigi if (have_state) /* must be a check-state, we are done */ 269298943Sluigi goto done; 269398943Sluigi 269498943Sluigi#define OR_START(target) \ 269598943Sluigi if (ac && (*av[0] == '(' || *av[0] == '{')) { \ 269698943Sluigi if (open_par) \ 269798943Sluigi errx(EX_USAGE, "nested \"(\" not allowed\n"); \ 2698101641Sluigi prev = NULL; \ 269998943Sluigi open_par = 1; \ 270098943Sluigi if ( (av[0])[1] == '\0') { \ 270198943Sluigi ac--; av++; \ 270298943Sluigi } else \ 270398943Sluigi (*av)++; \ 270498943Sluigi } \ 270598943Sluigi target: \ 270698943Sluigi 270798943Sluigi 270898943Sluigi#define CLOSE_PAR \ 270998943Sluigi if (open_par) { \ 271098943Sluigi if (ac && ( \ 271198943Sluigi !strncmp(*av, ")", strlen(*av)) || \ 271298943Sluigi !strncmp(*av, "}", strlen(*av)) )) { \ 2713101641Sluigi prev = NULL; \ 271498943Sluigi open_par = 0; \ 271598943Sluigi ac--; av++; \ 271698943Sluigi } else \ 271798943Sluigi errx(EX_USAGE, "missing \")\"\n"); \ 271898943Sluigi } 2719106505Smaxim 272098943Sluigi#define NOT_BLOCK \ 272198943Sluigi if (ac && !strncmp(*av, "not", strlen(*av))) { \ 272298943Sluigi if (cmd->len & F_NOT) \ 272398943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); \ 272498943Sluigi cmd->len |= F_NOT; \ 272598943Sluigi ac--; av++; \ 272698943Sluigi } 272798943Sluigi 272898943Sluigi#define OR_BLOCK(target) \ 272998943Sluigi if (ac && !strncmp(*av, "or", strlen(*av))) { \ 273098943Sluigi if (prev == NULL || open_par == 0) \ 273198943Sluigi errx(EX_DATAERR, "invalid OR block"); \ 273298943Sluigi prev->len |= F_OR; \ 273398943Sluigi ac--; av++; \ 273498943Sluigi goto target; \ 273598943Sluigi } \ 273698943Sluigi CLOSE_PAR; 273798943Sluigi 2738102087Sluigi first_cmd = cmd; 2739102098Sluigi 2740102098Sluigi#if 0 274198943Sluigi /* 2742102087Sluigi * MAC addresses, optional. 2743102087Sluigi * If we have this, we skip the part "proto from src to dst" 2744102087Sluigi * and jump straight to the option parsing. 2745102087Sluigi */ 2746102087Sluigi NOT_BLOCK; 2747102087Sluigi NEED1("missing protocol"); 2748102087Sluigi if (!strncmp(*av, "MAC", strlen(*av)) || 2749102087Sluigi !strncmp(*av, "mac", strlen(*av))) { 2750102087Sluigi ac--; av++; /* the "MAC" keyword */ 2751102087Sluigi add_mac(cmd, ac, av); /* exits in case of errors */ 2752102087Sluigi cmd = next_cmd(cmd); 2753102087Sluigi ac -= 2; av += 2; /* dst-mac and src-mac */ 2754102087Sluigi NOT_BLOCK; 2755102087Sluigi NEED1("missing mac type"); 2756102087Sluigi if (add_mactype(cmd, ac, av[0])) 2757102087Sluigi cmd = next_cmd(cmd); 2758102087Sluigi ac--; av++; /* any or mac-type */ 2759102087Sluigi goto read_options; 2760102087Sluigi } 2761102098Sluigi#endif 2762102087Sluigi 2763102087Sluigi /* 276498943Sluigi * protocol, mandatory 276598943Sluigi */ 276698943Sluigi OR_START(get_proto); 276798943Sluigi NOT_BLOCK; 276898943Sluigi NEED1("missing protocol"); 2769102087Sluigi if (add_proto(cmd, *av)) { 2770102087Sluigi av++; ac--; 2771102087Sluigi if (F_LEN(cmd) == 0) /* plain IP */ 2772102087Sluigi proto = 0; 2773102087Sluigi else { 2774102087Sluigi proto = cmd->arg1; 2775102087Sluigi prev = cmd; 2776102087Sluigi cmd = next_cmd(cmd); 2777102087Sluigi } 2778102098Sluigi } else if (first_cmd != cmd) { 2779102098Sluigi errx(EX_DATAERR, "invalid protocol ``%s''", av); 2780102098Sluigi } else 2781102098Sluigi goto read_options; 278298943Sluigi OR_BLOCK(get_proto); 278398943Sluigi 278498943Sluigi /* 2785102087Sluigi * "from", mandatory 278698943Sluigi */ 2787102087Sluigi if (!ac || strncmp(*av, "from", strlen(*av))) 278898943Sluigi errx(EX_USAGE, "missing ``from''"); 278998943Sluigi ac--; av++; 279098943Sluigi 279198943Sluigi /* 279298943Sluigi * source IP, mandatory 279398943Sluigi */ 279498943Sluigi OR_START(source_ip); 279598943Sluigi NOT_BLOCK; /* optional "not" */ 279698943Sluigi NEED1("missing source address"); 2797102087Sluigi if (add_srcip(cmd, *av)) { 2798102087Sluigi ac--; av++; 2799102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 2800102087Sluigi prev = cmd; 2801102087Sluigi cmd = next_cmd(cmd); 2802102087Sluigi } 2803102087Sluigi } 280498943Sluigi OR_BLOCK(source_ip); 280598943Sluigi 280698943Sluigi /* 280798943Sluigi * source ports, optional 280898943Sluigi */ 280998943Sluigi NOT_BLOCK; /* optional "not" */ 2810101641Sluigi if (ac) { 2811102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 2812102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 2813102087Sluigi ac--; av++; 2814102087Sluigi if (F_LEN(cmd) != 0) 2815102087Sluigi cmd = next_cmd(cmd); 2816101641Sluigi } 281798943Sluigi } 281898943Sluigi 281998943Sluigi /* 2820102087Sluigi * "to", mandatory 282198943Sluigi */ 2822102087Sluigi if (!ac || strncmp(*av, "to", strlen(*av))) 282398943Sluigi errx(EX_USAGE, "missing ``to''"); 282498943Sluigi av++; ac--; 282598943Sluigi 282698943Sluigi /* 282798943Sluigi * destination, mandatory 282898943Sluigi */ 282998943Sluigi OR_START(dest_ip); 283098943Sluigi NOT_BLOCK; /* optional "not" */ 283198943Sluigi NEED1("missing dst address"); 2832102087Sluigi if (add_dstip(cmd, *av)) { 2833102087Sluigi ac--; av++; 2834102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 2835102087Sluigi prev = cmd; 2836102087Sluigi cmd = next_cmd(cmd); 2837102087Sluigi } 2838102087Sluigi } 283998943Sluigi OR_BLOCK(dest_ip); 284098943Sluigi 284198943Sluigi /* 284298943Sluigi * dest. ports, optional 284398943Sluigi */ 284498943Sluigi NOT_BLOCK; /* optional "not" */ 2845101641Sluigi if (ac) { 2846102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 2847102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 2848102087Sluigi ac--; av++; 2849102087Sluigi if (F_LEN(cmd) != 0) 2850102087Sluigi cmd = next_cmd(cmd); 2851101641Sluigi } 285298943Sluigi } 285398943Sluigi 285498943Sluigiread_options: 2855102087Sluigi if (ac && first_cmd == cmd) { 2856102087Sluigi /* 2857102087Sluigi * nothing specified so far, store in the rule to ease 2858102087Sluigi * printout later. 2859102087Sluigi */ 2860102087Sluigi rule->_pad = 1; 2861102087Sluigi } 286298943Sluigi prev = NULL; 286398943Sluigi while (ac) { 2864101641Sluigi char *s; 2865101641Sluigi ipfw_insn_u32 *cmd32; /* alias for cmd */ 286698943Sluigi 2867101641Sluigi s = *av; 2868101641Sluigi cmd32 = (ipfw_insn_u32 *)cmd; 2869101641Sluigi 287098943Sluigi if (*s == '!') { /* alternate syntax for NOT */ 287198943Sluigi if (cmd->len & F_NOT) 287298943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 287398943Sluigi cmd->len = F_NOT; 287498943Sluigi s++; 287598943Sluigi } 287698943Sluigi i = match_token(rule_options, s); 287798943Sluigi ac--; av++; 287898943Sluigi switch(i) { 287998943Sluigi case TOK_NOT: 288098943Sluigi if (cmd->len & F_NOT) 288198943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 288298943Sluigi cmd->len = F_NOT; 288398943Sluigi break; 288498943Sluigi 288598943Sluigi case TOK_OR: 2886101641Sluigi if (open_par == 0 || prev == NULL) 288798943Sluigi errx(EX_USAGE, "invalid \"or\" block\n"); 288898943Sluigi prev->len |= F_OR; 288998943Sluigi break; 2890101641Sluigi 2891101641Sluigi case TOK_STARTBRACE: 2892101641Sluigi if (open_par) 2893101641Sluigi errx(EX_USAGE, "+nested \"(\" not allowed\n"); 2894101641Sluigi open_par = 1; 2895101641Sluigi break; 2896101641Sluigi 2897101641Sluigi case TOK_ENDBRACE: 2898101641Sluigi if (!open_par) 2899101641Sluigi errx(EX_USAGE, "+missing \")\"\n"); 2900101641Sluigi open_par = 0; 2901102087Sluigi prev = NULL; 2902101641Sluigi break; 2903101641Sluigi 290498943Sluigi case TOK_IN: 290598943Sluigi fill_cmd(cmd, O_IN, 0, 0); 290698943Sluigi break; 290798943Sluigi 290898943Sluigi case TOK_OUT: 290998943Sluigi cmd->len ^= F_NOT; /* toggle F_NOT */ 291098943Sluigi fill_cmd(cmd, O_IN, 0, 0); 291198943Sluigi break; 291298943Sluigi 291398943Sluigi case TOK_FRAG: 291498943Sluigi fill_cmd(cmd, O_FRAG, 0, 0); 291598943Sluigi break; 291698943Sluigi 291798943Sluigi case TOK_LAYER2: 291898943Sluigi fill_cmd(cmd, O_LAYER2, 0, 0); 291998943Sluigi break; 292098943Sluigi 292198943Sluigi case TOK_XMIT: 292298943Sluigi case TOK_RECV: 292398943Sluigi case TOK_VIA: 292498943Sluigi NEED1("recv, xmit, via require interface name" 292598943Sluigi " or address"); 292698943Sluigi fill_iface((ipfw_insn_if *)cmd, av[0]); 292798943Sluigi ac--; av++; 292898943Sluigi if (F_LEN(cmd) == 0) /* not a valid address */ 292998943Sluigi break; 293098943Sluigi if (i == TOK_XMIT) 293198943Sluigi cmd->opcode = O_XMIT; 293298943Sluigi else if (i == TOK_RECV) 293398943Sluigi cmd->opcode = O_RECV; 293498943Sluigi else if (i == TOK_VIA) 293598943Sluigi cmd->opcode = O_VIA; 293698943Sluigi break; 293798943Sluigi 293899475Sluigi case TOK_ICMPTYPES: 293999475Sluigi NEED1("icmptypes requires list of types"); 294099475Sluigi fill_icmptypes((ipfw_insn_u32 *)cmd, *av); 294199475Sluigi av++; ac--; 294299475Sluigi break; 294399475Sluigi 294498943Sluigi case TOK_IPTTL: 294598943Sluigi NEED1("ipttl requires TTL"); 294698943Sluigi fill_cmd(cmd, O_IPTTL, 0, strtoul(*av, NULL, 0)); 294798943Sluigi ac--; av++; 294898943Sluigi break; 294998943Sluigi 295098943Sluigi case TOK_IPID: 295198943Sluigi NEED1("ipid requires length"); 295298943Sluigi fill_cmd(cmd, O_IPID, 0, strtoul(*av, NULL, 0)); 295398943Sluigi ac--; av++; 295498943Sluigi break; 295598943Sluigi 295698943Sluigi case TOK_IPLEN: 295798943Sluigi NEED1("iplen requires length"); 295898943Sluigi fill_cmd(cmd, O_IPLEN, 0, strtoul(*av, NULL, 0)); 295998943Sluigi ac--; av++; 296098943Sluigi break; 296198943Sluigi 296298943Sluigi case TOK_IPVER: 296398943Sluigi NEED1("ipver requires version"); 296498943Sluigi fill_cmd(cmd, O_IPVER, 0, strtoul(*av, NULL, 0)); 296598943Sluigi ac--; av++; 296698943Sluigi break; 296798943Sluigi 296899475Sluigi case TOK_IPPRECEDENCE: 296999475Sluigi NEED1("ipprecedence requires value"); 297099475Sluigi fill_cmd(cmd, O_IPPRECEDENCE, 0, 297199475Sluigi (strtoul(*av, NULL, 0) & 7) << 5); 297299475Sluigi ac--; av++; 297399475Sluigi break; 297499475Sluigi 297598943Sluigi case TOK_IPOPTS: 297698943Sluigi NEED1("missing argument for ipoptions"); 2977101116Sluigi fill_flags(cmd, O_IPOPT, f_ipopts, *av); 297898943Sluigi ac--; av++; 297998943Sluigi break; 298098943Sluigi 298199475Sluigi case TOK_IPTOS: 298299475Sluigi NEED1("missing argument for iptos"); 2983101116Sluigi fill_flags(cmd, O_IPTOS, f_iptos, *av); 298499475Sluigi ac--; av++; 298599475Sluigi break; 298699475Sluigi 298798943Sluigi case TOK_UID: 298898943Sluigi NEED1("uid requires argument"); 298998943Sluigi { 299098943Sluigi char *end; 299198943Sluigi uid_t uid; 299298943Sluigi struct passwd *pwd; 299398943Sluigi 299498943Sluigi cmd->opcode = O_UID; 299598943Sluigi uid = strtoul(*av, &end, 0); 299698943Sluigi pwd = (*end == '\0') ? getpwuid(uid) : getpwnam(*av); 299798943Sluigi if (pwd == NULL) 299898943Sluigi errx(EX_DATAERR, "uid \"%s\" nonexistent", *av); 2999106504Smaxim cmd32->d[0] = pwd->pw_uid; 300098943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 300198943Sluigi ac--; av++; 300298943Sluigi } 300398943Sluigi break; 300498943Sluigi 300598943Sluigi case TOK_GID: 300698943Sluigi NEED1("gid requires argument"); 300798943Sluigi { 300898943Sluigi char *end; 300998943Sluigi gid_t gid; 301098943Sluigi struct group *grp; 301198943Sluigi 301298943Sluigi cmd->opcode = O_GID; 301398943Sluigi gid = strtoul(*av, &end, 0); 301498943Sluigi grp = (*end == '\0') ? getgrgid(gid) : getgrnam(*av); 301598943Sluigi if (grp == NULL) 301698943Sluigi errx(EX_DATAERR, "gid \"%s\" nonexistent", *av); 3017106504Smaxim cmd32->d[0] = grp->gr_gid; 301898943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 301998943Sluigi ac--; av++; 302098943Sluigi } 302198943Sluigi break; 302298943Sluigi 302398943Sluigi case TOK_ESTAB: 302498943Sluigi fill_cmd(cmd, O_ESTAB, 0, 0); 302598943Sluigi break; 302698943Sluigi 302798943Sluigi case TOK_SETUP: 302898943Sluigi fill_cmd(cmd, O_TCPFLAGS, 0, 302998943Sluigi (TH_SYN) | ( (TH_ACK) & 0xff) <<8 ); 303098943Sluigi break; 303198943Sluigi 303298943Sluigi case TOK_TCPOPTS: 303398943Sluigi NEED1("missing argument for tcpoptions"); 303498943Sluigi fill_flags(cmd, O_TCPOPTS, f_tcpopts, *av); 303598943Sluigi ac--; av++; 303698943Sluigi break; 303798943Sluigi 303898943Sluigi case TOK_TCPSEQ: 303998943Sluigi case TOK_TCPACK: 304098943Sluigi NEED1("tcpseq/tcpack requires argument"); 304198943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 304298943Sluigi cmd->opcode = (i == TOK_TCPSEQ) ? O_TCPSEQ : O_TCPACK; 304398943Sluigi cmd32->d[0] = htonl(strtoul(*av, NULL, 0)); 304498943Sluigi ac--; av++; 304598943Sluigi break; 304698943Sluigi 304798943Sluigi case TOK_TCPWIN: 304898943Sluigi NEED1("tcpwin requires length"); 304998943Sluigi fill_cmd(cmd, O_TCPWIN, 0, 305098943Sluigi htons(strtoul(*av, NULL, 0))); 305198943Sluigi ac--; av++; 305298943Sluigi break; 305398943Sluigi 305498943Sluigi case TOK_TCPFLAGS: 305598943Sluigi NEED1("missing argument for tcpflags"); 305698943Sluigi cmd->opcode = O_TCPFLAGS; 305798943Sluigi fill_flags(cmd, O_TCPFLAGS, f_tcpflags, *av); 305898943Sluigi ac--; av++; 305998943Sluigi break; 306098943Sluigi 306198943Sluigi case TOK_KEEPSTATE: 3062101641Sluigi if (open_par) 3063101641Sluigi errx(EX_USAGE, "keep-state cannot be part " 3064101641Sluigi "of an or block"); 306599909Sluigi if (have_state) 3066101116Sluigi errx(EX_USAGE, "only one of keep-state " 306799909Sluigi "and limit is allowed"); 3068101116Sluigi have_state = cmd; 306998943Sluigi fill_cmd(cmd, O_KEEP_STATE, 0, 0); 307098943Sluigi break; 307198943Sluigi 307298943Sluigi case TOK_LIMIT: 3073101641Sluigi if (open_par) 3074101641Sluigi errx(EX_USAGE, "limit cannot be part " 3075101641Sluigi "of an or block"); 307699909Sluigi if (have_state) 3077101116Sluigi errx(EX_USAGE, "only one of keep-state " 307899909Sluigi "and limit is allowed"); 3079101641Sluigi NEED1("limit needs mask and # of connections"); 3080101116Sluigi have_state = cmd; 308198943Sluigi { 308298943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 308398943Sluigi 308498943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_limit); 308598943Sluigi cmd->opcode = O_LIMIT; 308698943Sluigi c->limit_mask = 0; 308798943Sluigi c->conn_limit = 0; 308898943Sluigi for (; ac >1 ;) { 308998943Sluigi int val; 309098943Sluigi 309198943Sluigi val = match_token(limit_masks, *av); 309298943Sluigi if (val <= 0) 309398943Sluigi break; 309498943Sluigi c->limit_mask |= val; 309598943Sluigi ac--; av++; 309698943Sluigi } 309798943Sluigi c->conn_limit = atoi(*av); 309898943Sluigi if (c->conn_limit == 0) 309998943Sluigi errx(EX_USAGE, "limit: limit must be >0"); 310098943Sluigi if (c->limit_mask == 0) 310198943Sluigi errx(EX_USAGE, "missing limit mask"); 310298943Sluigi ac--; av++; 310398943Sluigi } 310498943Sluigi break; 310598943Sluigi 3106102087Sluigi case TOK_PROTO: 3107102087Sluigi NEED1("missing protocol"); 3108102087Sluigi if (add_proto(cmd, *av)) { 3109102087Sluigi proto = cmd->arg1; 3110102087Sluigi ac--; av++; 3111102098Sluigi } else 3112102098Sluigi errx(EX_DATAERR, "invalid protocol ``%s''", av); 3113102087Sluigi break; 3114106505Smaxim 3115102087Sluigi case TOK_SRCIP: 3116102087Sluigi NEED1("missing source IP"); 3117102087Sluigi if (add_srcip(cmd, *av)) { 3118102087Sluigi ac--; av++; 3119102087Sluigi } 3120102087Sluigi break; 3121102087Sluigi 3122102087Sluigi case TOK_DSTIP: 3123102087Sluigi NEED1("missing destination IP"); 3124102087Sluigi if (add_dstip(cmd, *av)) { 3125102087Sluigi ac--; av++; 3126102087Sluigi } 3127102087Sluigi break; 3128102087Sluigi 3129102087Sluigi case TOK_SRCPORT: 3130102087Sluigi NEED1("missing source port"); 3131102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 3132102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 3133102087Sluigi ac--; av++; 3134102087Sluigi } else 3135102087Sluigi errx(EX_DATAERR, "invalid source port %s", *av); 3136102087Sluigi break; 3137102087Sluigi 3138102087Sluigi case TOK_DSTPORT: 3139102087Sluigi NEED1("missing destination port"); 3140102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 3141102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 3142102087Sluigi ac--; av++; 3143102087Sluigi } else 3144102087Sluigi errx(EX_DATAERR, "invalid destination port %s", 3145102087Sluigi *av); 3146102087Sluigi break; 3147102087Sluigi 3148102087Sluigi case TOK_MAC: 3149102087Sluigi if (ac < 2) 3150102087Sluigi errx(EX_USAGE, "MAC dst-mac src-mac"); 3151102087Sluigi if (add_mac(cmd, ac, av)) { 3152102087Sluigi ac -= 2; av += 2; 3153102087Sluigi } 3154102087Sluigi break; 3155102087Sluigi 3156102087Sluigi case TOK_MACTYPE: 3157102087Sluigi NEED1("missing mac type"); 3158102087Sluigi if (!add_mactype(cmd, ac, *av)) 3159102087Sluigi errx(EX_DATAERR, "invalid mac type %s", av); 3160102087Sluigi ac--; av++; 3161102087Sluigi break; 3162102087Sluigi 316398943Sluigi default: 316498943Sluigi errx(EX_USAGE, "unrecognised option [%d] %s\n", i, s); 316598943Sluigi } 316698943Sluigi if (F_LEN(cmd) > 0) { /* prepare to advance */ 316798943Sluigi prev = cmd; 316898943Sluigi cmd = next_cmd(cmd); 316998943Sluigi } 317098943Sluigi } 317198943Sluigi 317298943Sluigidone: 317398943Sluigi /* 317498943Sluigi * Now copy stuff into the rule. 317598943Sluigi * If we have a keep-state option, the first instruction 317698943Sluigi * must be a PROBE_STATE (which is generated here). 317798943Sluigi * If we have a LOG option, it was stored as the first command, 317898943Sluigi * and now must be moved to the top of the action part. 317998943Sluigi */ 318098943Sluigi dst = (ipfw_insn *)rule->cmd; 318198943Sluigi 318298943Sluigi /* 3183107289Sluigi * First thing to write into the command stream is the match probability. 3184107289Sluigi */ 3185107289Sluigi if (match_prob != 1) { /* 1 means always match */ 3186107289Sluigi dst->opcode = O_PROB; 3187107289Sluigi dst->len = 2; 3188107289Sluigi *((int32_t *)(dst+1)) = (int32_t)(match_prob * 0x7fffffff); 3189107289Sluigi dst += dst->len; 3190107289Sluigi } 3191107289Sluigi 3192107289Sluigi /* 319398943Sluigi * generate O_PROBE_STATE if necessary 319498943Sluigi */ 3195101116Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 319698943Sluigi fill_cmd(dst, O_PROBE_STATE, 0, 0); 319798943Sluigi dst = next_cmd(dst); 319898943Sluigi } 319998943Sluigi /* 3200101116Sluigi * copy all commands but O_LOG, O_KEEP_STATE, O_LIMIT 320198943Sluigi */ 320298943Sluigi for (src = (ipfw_insn *)cmdbuf; src != cmd; src += i) { 320398943Sluigi i = F_LEN(src); 320498943Sluigi 3205101116Sluigi switch (src->opcode) { 3206101116Sluigi case O_LOG: 3207101116Sluigi case O_KEEP_STATE: 3208101116Sluigi case O_LIMIT: 3209101116Sluigi break; 3210101116Sluigi default: 321198943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 321298943Sluigi dst += i; 321398943Sluigi } 321498943Sluigi } 321598943Sluigi 321698943Sluigi /* 3217101116Sluigi * put back the have_state command as last opcode 3218101116Sluigi */ 3219101295Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 3220101116Sluigi i = F_LEN(have_state); 3221101116Sluigi bcopy(have_state, dst, i * sizeof(u_int32_t)); 3222101116Sluigi dst += i; 3223101116Sluigi } 3224101116Sluigi /* 322598943Sluigi * start action section 322698943Sluigi */ 322798943Sluigi rule->act_ofs = dst - rule->cmd; 322898943Sluigi 322998943Sluigi /* 323098943Sluigi * put back O_LOG if necessary 323198943Sluigi */ 323298943Sluigi src = (ipfw_insn *)cmdbuf; 323398943Sluigi if ( src->opcode == O_LOG ) { 323498943Sluigi i = F_LEN(src); 323598943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 323698943Sluigi dst += i; 323798943Sluigi } 323898943Sluigi /* 323998943Sluigi * copy all other actions 324098943Sluigi */ 324198943Sluigi for (src = (ipfw_insn *)actbuf; src != action; src += i) { 324298943Sluigi i = F_LEN(src); 324398943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 324498943Sluigi dst += i; 324598943Sluigi } 324698943Sluigi 324798943Sluigi rule->cmd_len = (u_int32_t *)dst - (u_int32_t *)(rule->cmd); 324898943Sluigi i = (void *)dst - (void *)rule; 324998943Sluigi if (getsockopt(s, IPPROTO_IP, IP_FW_ADD, rule, &i) == -1) 325098943Sluigi err(EX_UNAVAILABLE, "getsockopt(%s)", "IP_FW_ADD"); 325198943Sluigi if (!do_quiet) 3252112189Smaxim show_ipfw(rule, 10, 10); 325398943Sluigi} 325498943Sluigi 325598943Sluigistatic void 3256101978Sluigizero(int ac, char *av[]) 325798943Sluigi{ 325898943Sluigi int rulenum; 325998943Sluigi int failed = EX_OK; 326098943Sluigi 326198943Sluigi av++; ac--; 326298943Sluigi 326398943Sluigi if (!ac) { 326498943Sluigi /* clear all entries */ 326598943Sluigi if (setsockopt(s, IPPROTO_IP, IP_FW_ZERO, NULL, 0) < 0) 326698943Sluigi err(EX_UNAVAILABLE, "setsockopt(%s)", "IP_FW_ZERO"); 326798943Sluigi if (!do_quiet) 326898943Sluigi printf("Accounting cleared.\n"); 326998943Sluigi 327098943Sluigi return; 327198943Sluigi } 327298943Sluigi 327398943Sluigi while (ac) { 327498943Sluigi /* Rule number */ 327598943Sluigi if (isdigit(**av)) { 327698943Sluigi rulenum = atoi(*av); 327798943Sluigi av++; 327898943Sluigi ac--; 327998943Sluigi if (setsockopt(s, IPPROTO_IP, 328098943Sluigi IP_FW_ZERO, &rulenum, sizeof rulenum)) { 328198943Sluigi warn("rule %u: setsockopt(IP_FW_ZERO)", 328298943Sluigi rulenum); 328398943Sluigi failed = EX_UNAVAILABLE; 328498943Sluigi } else if (!do_quiet) 328598943Sluigi printf("Entry %d cleared\n", rulenum); 328698943Sluigi } else { 328798943Sluigi errx(EX_USAGE, "invalid rule number ``%s''", *av); 328898943Sluigi } 328998943Sluigi } 329098943Sluigi if (failed != EX_OK) 329198943Sluigi exit(failed); 329298943Sluigi} 329398943Sluigi 329498943Sluigistatic void 3295101978Sluigiresetlog(int ac, char *av[]) 329698943Sluigi{ 329798943Sluigi int rulenum; 329898943Sluigi int failed = EX_OK; 329998943Sluigi 330098943Sluigi av++; ac--; 330198943Sluigi 330298943Sluigi if (!ac) { 330398943Sluigi /* clear all entries */ 330498943Sluigi if (setsockopt(s, IPPROTO_IP, IP_FW_RESETLOG, NULL, 0) < 0) 330598943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_FW_RESETLOG)"); 330698943Sluigi if (!do_quiet) 330798943Sluigi printf("Logging counts reset.\n"); 330898943Sluigi 330998943Sluigi return; 331098943Sluigi } 331198943Sluigi 331298943Sluigi while (ac) { 331398943Sluigi /* Rule number */ 331498943Sluigi if (isdigit(**av)) { 331598943Sluigi rulenum = atoi(*av); 331698943Sluigi av++; 331798943Sluigi ac--; 331898943Sluigi if (setsockopt(s, IPPROTO_IP, 331998943Sluigi IP_FW_RESETLOG, &rulenum, sizeof rulenum)) { 332098943Sluigi warn("rule %u: setsockopt(IP_FW_RESETLOG)", 332198943Sluigi rulenum); 332298943Sluigi failed = EX_UNAVAILABLE; 332398943Sluigi } else if (!do_quiet) 332498943Sluigi printf("Entry %d logging count reset\n", 332598943Sluigi rulenum); 332698943Sluigi } else { 332798943Sluigi errx(EX_DATAERR, "invalid rule number ``%s''", *av); 332898943Sluigi } 332998943Sluigi } 333098943Sluigi if (failed != EX_OK) 333198943Sluigi exit(failed); 333298943Sluigi} 333398943Sluigi 333498943Sluigistatic void 333598943Sluigiflush() 333698943Sluigi{ 333798943Sluigi int cmd = do_pipe ? IP_DUMMYNET_FLUSH : IP_FW_FLUSH; 333898943Sluigi 333998943Sluigi if (!do_force && !do_quiet) { /* need to ask user */ 334098943Sluigi int c; 334198943Sluigi 334298943Sluigi printf("Are you sure? [yn] "); 334398943Sluigi fflush(stdout); 334498943Sluigi do { 334598943Sluigi c = toupper(getc(stdin)); 334698943Sluigi while (c != '\n' && getc(stdin) != '\n') 334798943Sluigi if (feof(stdin)) 334898943Sluigi return; /* and do not flush */ 334998943Sluigi } while (c != 'Y' && c != 'N'); 335098943Sluigi printf("\n"); 335198943Sluigi if (c == 'N') /* user said no */ 335298943Sluigi return; 335398943Sluigi } 335498943Sluigi if (setsockopt(s, IPPROTO_IP, cmd, NULL, 0) < 0) 335598943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_%s_FLUSH)", 335698943Sluigi do_pipe ? "DUMMYNET" : "FW"); 335798943Sluigi if (!do_quiet) 335898943Sluigi printf("Flushed all %s.\n", do_pipe ? "pipes" : "rules"); 335998943Sluigi} 336098943Sluigi 336198943Sluigistatic int 336298943Sluigiipfw_main(int ac, char **av) 336398943Sluigi{ 336498943Sluigi int ch; 336598943Sluigi 336698943Sluigi if (ac == 1) 336798943Sluigi show_usage(); 336898943Sluigi 336998943Sluigi /* Set the force flag for non-interactive processes */ 337098943Sluigi do_force = !isatty(STDIN_FILENO); 337198943Sluigi 337298943Sluigi optind = optreset = 1; 3373102098Sluigi while ((ch = getopt(ac, av, "hs:acdefNqStv")) != -1) 337498943Sluigi switch (ch) { 337598943Sluigi case 'h': /* help */ 337698943Sluigi help(); 337798943Sluigi break; /* NOTREACHED */ 337898943Sluigi 337998943Sluigi case 's': /* sort */ 338098943Sluigi do_sort = atoi(optarg); 338198943Sluigi break; 338298943Sluigi case 'a': 338398943Sluigi do_acct = 1; 338498943Sluigi break; 3385102098Sluigi case 'c': 3386102098Sluigi do_compact = 1; 3387102098Sluigi break; 338898943Sluigi case 'd': 338998943Sluigi do_dynamic = 1; 339098943Sluigi break; 339198943Sluigi case 'e': 339298943Sluigi do_expired = 1; 339398943Sluigi break; 339498943Sluigi case 'f': 339598943Sluigi do_force = 1; 339698943Sluigi break; 339798943Sluigi case 'N': 339898943Sluigi do_resolv = 1; 339998943Sluigi break; 340098943Sluigi case 'q': 340198943Sluigi do_quiet = 1; 340298943Sluigi break; 3403101628Sluigi case 'S': 3404101628Sluigi show_sets = 1; 3405101628Sluigi break; 340698943Sluigi case 't': 340798943Sluigi do_time = 1; 340898943Sluigi break; 340998943Sluigi case 'v': /* verbose */ 341098943Sluigi verbose++; 341198943Sluigi break; 341298943Sluigi default: 341398943Sluigi show_usage(); 341498943Sluigi } 341598943Sluigi 341698943Sluigi ac -= optind; 341798943Sluigi av += optind; 341898943Sluigi NEED1("bad arguments, for usage summary ``ipfw''"); 341998943Sluigi 342098943Sluigi /* 342198943Sluigi * optional: pipe or queue 342298943Sluigi */ 342398943Sluigi if (!strncmp(*av, "pipe", strlen(*av))) { 342498943Sluigi do_pipe = 1; 342598943Sluigi ac--; 342698943Sluigi av++; 342798943Sluigi } else if (!strncmp(*av, "queue", strlen(*av))) { 342898943Sluigi do_pipe = 2; 342998943Sluigi ac--; 343098943Sluigi av++; 343198943Sluigi } 343298943Sluigi NEED1("missing command"); 343398943Sluigi 343498943Sluigi /* 343598943Sluigi * for pipes and queues we normally say 'pipe NN config' 343698943Sluigi * but the code is easier to parse as 'pipe config NN' 343798943Sluigi * so we swap the two arguments. 343898943Sluigi */ 343998943Sluigi if (do_pipe > 0 && ac > 1 && *av[0] >= '0' && *av[0] <= '9') { 344098943Sluigi char *p = av[0]; 344198943Sluigi av[0] = av[1]; 344298943Sluigi av[1] = p; 344398943Sluigi } 344498943Sluigi if (!strncmp(*av, "add", strlen(*av))) 344598943Sluigi add(ac, av); 344698943Sluigi else if (do_pipe && !strncmp(*av, "config", strlen(*av))) 344798943Sluigi config_pipe(ac, av); 3448101978Sluigi else if (!strncmp(*av, "delete", strlen(*av))) 344998943Sluigi delete(ac, av); 345098943Sluigi else if (!strncmp(*av, "flush", strlen(*av))) 345198943Sluigi flush(); 345298943Sluigi else if (!strncmp(*av, "zero", strlen(*av))) 345398943Sluigi zero(ac, av); 345498943Sluigi else if (!strncmp(*av, "resetlog", strlen(*av))) 345598943Sluigi resetlog(ac, av); 345698943Sluigi else if (!strncmp(*av, "print", strlen(*av)) || 345798943Sluigi !strncmp(*av, "list", strlen(*av))) 345898943Sluigi list(ac, av); 3459101978Sluigi else if (!strncmp(*av, "set", strlen(*av))) 3460101978Sluigi sets_handler(ac, av); 3461109126Sdillon else if (!strncmp(*av, "enable", strlen(*av))) 3462109126Sdillon sysctl_handler(ac, av, 1); 3463109126Sdillon else if (!strncmp(*av, "disable", strlen(*av))) 3464109126Sdillon sysctl_handler(ac, av, 0); 346598943Sluigi else if (!strncmp(*av, "show", strlen(*av))) { 346698943Sluigi do_acct++; 346798943Sluigi list(ac, av); 346898943Sluigi } else 346998943Sluigi errx(EX_USAGE, "bad command `%s'", *av); 347098943Sluigi return 0; 347198943Sluigi} 347298943Sluigi 347398943Sluigi 347498943Sluigistatic void 3475106505Smaximipfw_readfile(int ac, char *av[]) 347698943Sluigi{ 347798943Sluigi#define MAX_ARGS 32 347898943Sluigi#define WHITESP " \t\f\v\n\r" 347998943Sluigi char buf[BUFSIZ]; 348098943Sluigi char *a, *p, *args[MAX_ARGS], *cmd = NULL; 348198943Sluigi char linename[10]; 348298943Sluigi int i=0, lineno=0, qflag=0, pflag=0, status; 348398943Sluigi FILE *f = NULL; 348498943Sluigi pid_t preproc = 0; 348598943Sluigi int c; 348698943Sluigi 3487108231Skbyanc while ((c = getopt(ac, av, "p:q")) != -1) { 348898943Sluigi switch(c) { 348998943Sluigi case 'p': 349098943Sluigi pflag = 1; 349198943Sluigi cmd = optarg; 349298943Sluigi args[0] = cmd; 349398943Sluigi i = 1; 349498943Sluigi break; 349598943Sluigi 349698943Sluigi case 'q': 349798943Sluigi qflag = 1; 349898943Sluigi break; 349998943Sluigi 350098943Sluigi default: 350198943Sluigi errx(EX_USAGE, "bad arguments, for usage" 350298943Sluigi " summary ``ipfw''"); 350398943Sluigi } 350498943Sluigi 3505108231Skbyanc if (pflag) 3506108231Skbyanc break; 3507108231Skbyanc } 3508108231Skbyanc 3509108231Skbyanc if (pflag) { 3510108231Skbyanc /* Pass all but the last argument to the preprocessor. */ 3511108231Skbyanc while (optind < ac - 1) { 3512108231Skbyanc if (i >= MAX_ARGS) 3513108231Skbyanc errx(EX_USAGE, "too many preprocessor options"); 3514108231Skbyanc args[i++] = av[optind++]; 3515108231Skbyanc } 3516108231Skbyanc } 3517108231Skbyanc 351898943Sluigi av += optind; 351998943Sluigi ac -= optind; 352098943Sluigi if (ac != 1) 352198943Sluigi errx(EX_USAGE, "extraneous filename arguments"); 352298943Sluigi 352398943Sluigi if ((f = fopen(av[0], "r")) == NULL) 352498943Sluigi err(EX_UNAVAILABLE, "fopen: %s", av[0]); 352598943Sluigi 352698943Sluigi if (pflag) { 352798943Sluigi /* pipe through preprocessor (cpp or m4) */ 352898943Sluigi int pipedes[2]; 352998943Sluigi 353098943Sluigi args[i] = 0; 353198943Sluigi 353298943Sluigi if (pipe(pipedes) == -1) 353398943Sluigi err(EX_OSERR, "cannot create pipe"); 353498943Sluigi 353598943Sluigi switch((preproc = fork())) { 353698943Sluigi case -1: 353798943Sluigi err(EX_OSERR, "cannot fork"); 353898943Sluigi 353998943Sluigi case 0: 354098943Sluigi /* child */ 354198943Sluigi if (dup2(fileno(f), 0) == -1 354298943Sluigi || dup2(pipedes[1], 1) == -1) 354398943Sluigi err(EX_OSERR, "dup2()"); 354498943Sluigi fclose(f); 354598943Sluigi close(pipedes[1]); 354698943Sluigi close(pipedes[0]); 354798943Sluigi execvp(cmd, args); 354898943Sluigi err(EX_OSERR, "execvp(%s) failed", cmd); 354998943Sluigi 355098943Sluigi default: 355198943Sluigi /* parent */ 355298943Sluigi fclose(f); 355398943Sluigi close(pipedes[1]); 355498943Sluigi if ((f = fdopen(pipedes[0], "r")) == NULL) { 355598943Sluigi int savederrno = errno; 355698943Sluigi 355798943Sluigi (void)kill(preproc, SIGTERM); 355898943Sluigi errno = savederrno; 355998943Sluigi err(EX_OSERR, "fdopen()"); 356098943Sluigi } 356198943Sluigi } 356298943Sluigi } 356398943Sluigi 356498943Sluigi while (fgets(buf, BUFSIZ, f)) { 356598943Sluigi lineno++; 356698943Sluigi sprintf(linename, "Line %d", lineno); 356798943Sluigi args[0] = linename; 356898943Sluigi 356998943Sluigi if (*buf == '#') 357098943Sluigi continue; 357198943Sluigi if ((p = strchr(buf, '#')) != NULL) 357298943Sluigi *p = '\0'; 357398943Sluigi i = 1; 357498943Sluigi if (qflag) 357598943Sluigi args[i++] = "-q"; 357698943Sluigi for (a = strtok(buf, WHITESP); 357798943Sluigi a && i < MAX_ARGS; a = strtok(NULL, WHITESP), i++) 357898943Sluigi args[i] = a; 357998943Sluigi if (i == (qflag? 2: 1)) 358098943Sluigi continue; 358198943Sluigi if (i == MAX_ARGS) 358298943Sluigi errx(EX_USAGE, "%s: too many arguments", 358398943Sluigi linename); 358498943Sluigi args[i] = NULL; 358598943Sluigi 358698943Sluigi ipfw_main(i, args); 358798943Sluigi } 358898943Sluigi fclose(f); 358998943Sluigi if (pflag) { 359098943Sluigi if (waitpid(preproc, &status, 0) == -1) 359198943Sluigi errx(EX_OSERR, "waitpid()"); 359298943Sluigi if (WIFEXITED(status) && WEXITSTATUS(status) != EX_OK) 359398943Sluigi errx(EX_UNAVAILABLE, 359498943Sluigi "preprocessor exited with status %d", 359598943Sluigi WEXITSTATUS(status)); 359698943Sluigi else if (WIFSIGNALED(status)) 359798943Sluigi errx(EX_UNAVAILABLE, 359898943Sluigi "preprocessor exited with signal %d", 359998943Sluigi WTERMSIG(status)); 360098943Sluigi } 360198943Sluigi} 360298943Sluigi 360398943Sluigiint 360498943Sluigimain(int ac, char *av[]) 360598943Sluigi{ 360698943Sluigi s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); 360798943Sluigi if (s < 0) 360898943Sluigi err(EX_UNAVAILABLE, "socket"); 360998943Sluigi 361098943Sluigi /* 361198943Sluigi * If the last argument is an absolute pathname, interpret it 361298943Sluigi * as a file to be preprocessed. 361398943Sluigi */ 361498943Sluigi 361598943Sluigi if (ac > 1 && av[ac - 1][0] == '/' && access(av[ac - 1], R_OK) == 0) 361698943Sluigi ipfw_readfile(ac, av); 361798943Sluigi else 361898943Sluigi ipfw_main(ac, av); 361998943Sluigi return EX_OK; 362098943Sluigi} 3621