ipfw2.c revision 116919
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 116919 2003-06-27 17:18:14Z luigi $ 2198943Sluigi */ 2298943Sluigi 2398943Sluigi#include <sys/param.h> 2498943Sluigi#include <sys/mbuf.h> 2598943Sluigi#include <sys/socket.h> 2698943Sluigi#include <sys/sockio.h> 2798943Sluigi#include <sys/sysctl.h> 2898943Sluigi#include <sys/time.h> 2998943Sluigi#include <sys/wait.h> 3098943Sluigi 3198943Sluigi#include <ctype.h> 3298943Sluigi#include <err.h> 3398943Sluigi#include <errno.h> 3498943Sluigi#include <grp.h> 3598943Sluigi#include <limits.h> 3698943Sluigi#include <netdb.h> 3798943Sluigi#include <pwd.h> 3898943Sluigi#include <signal.h> 3998943Sluigi#include <stdio.h> 4098943Sluigi#include <stdlib.h> 4198943Sluigi#include <stdarg.h> 4298943Sluigi#include <string.h> 4399603Sbde#include <timeconv.h> 4498943Sluigi#include <unistd.h> 4598943Sluigi#include <sysexits.h> 4698943Sluigi 4798943Sluigi#include <net/if.h> 4898943Sluigi#include <netinet/in.h> 4998943Sluigi#include <netinet/in_systm.h> 5098943Sluigi#include <netinet/ip.h> 5198943Sluigi#include <netinet/ip_icmp.h> 5298943Sluigi#include <netinet/ip_fw.h> 5398943Sluigi#include <net/route.h> /* def. of struct route */ 5498943Sluigi#include <netinet/ip_dummynet.h> 5598943Sluigi#include <netinet/tcp.h> 5698943Sluigi#include <arpa/inet.h> 5798943Sluigi 5898943Sluigiint s, /* main RAW socket */ 5998943Sluigi do_resolv, /* Would try to resolve all */ 6098943Sluigi do_acct, /* Show packet/byte count */ 6198943Sluigi do_time, /* Show time stamps */ 6298943Sluigi do_quiet, /* Be quiet in add and flush */ 6398943Sluigi do_force, /* Don't ask for confirmation */ 6498943Sluigi do_pipe, /* this cmd refers to a pipe */ 6598943Sluigi do_sort, /* field to sort results (0 = no) */ 6698943Sluigi do_dynamic, /* display dynamic rules */ 6798943Sluigi do_expired, /* display expired dynamic rules */ 68102098Sluigi do_compact, /* show rules in compact mode */ 69101628Sluigi show_sets, /* display rule sets */ 7098943Sluigi verbose; 7198943Sluigi 7298943Sluigi#define IP_MASK_ALL 0xffffffff 7398943Sluigi 7498943Sluigi/* 7598943Sluigi * structure to hold flag names and associated values to be 7698943Sluigi * set in the appropriate masks. 7798943Sluigi * A NULL string terminates the array. 7898943Sluigi * Often, an element with 0 value contains an error string. 7998943Sluigi * 8098943Sluigi */ 8198943Sluigistruct _s_x { 8298943Sluigi char *s; 8398943Sluigi int x; 8498943Sluigi}; 8598943Sluigi 8698943Sluigistatic struct _s_x f_tcpflags[] = { 8798943Sluigi { "syn", TH_SYN }, 8898943Sluigi { "fin", TH_FIN }, 8998943Sluigi { "ack", TH_ACK }, 9098943Sluigi { "psh", TH_PUSH }, 9198943Sluigi { "rst", TH_RST }, 9298943Sluigi { "urg", TH_URG }, 9398943Sluigi { "tcp flag", 0 }, 9498943Sluigi { NULL, 0 } 9598943Sluigi}; 9698943Sluigi 9798943Sluigistatic struct _s_x f_tcpopts[] = { 9898943Sluigi { "mss", IP_FW_TCPOPT_MSS }, 9998943Sluigi { "maxseg", IP_FW_TCPOPT_MSS }, 10098943Sluigi { "window", IP_FW_TCPOPT_WINDOW }, 10198943Sluigi { "sack", IP_FW_TCPOPT_SACK }, 10298943Sluigi { "ts", IP_FW_TCPOPT_TS }, 10398943Sluigi { "timestamp", IP_FW_TCPOPT_TS }, 10498943Sluigi { "cc", IP_FW_TCPOPT_CC }, 10598943Sluigi { "tcp option", 0 }, 10698943Sluigi { NULL, 0 } 10798943Sluigi}; 10898943Sluigi 10998943Sluigi/* 11098943Sluigi * IP options span the range 0 to 255 so we need to remap them 11198943Sluigi * (though in fact only the low 5 bits are significant). 11298943Sluigi */ 11398943Sluigistatic struct _s_x f_ipopts[] = { 11498943Sluigi { "ssrr", IP_FW_IPOPT_SSRR}, 11598943Sluigi { "lsrr", IP_FW_IPOPT_LSRR}, 11698943Sluigi { "rr", IP_FW_IPOPT_RR}, 11798943Sluigi { "ts", IP_FW_IPOPT_TS}, 11898943Sluigi { "ip option", 0 }, 11998943Sluigi { NULL, 0 } 12098943Sluigi}; 12198943Sluigi 12298943Sluigistatic struct _s_x f_iptos[] = { 12398943Sluigi { "lowdelay", IPTOS_LOWDELAY}, 12498943Sluigi { "throughput", IPTOS_THROUGHPUT}, 12598943Sluigi { "reliability", IPTOS_RELIABILITY}, 12698943Sluigi { "mincost", IPTOS_MINCOST}, 12798943Sluigi { "congestion", IPTOS_CE}, 12898943Sluigi { "ecntransport", IPTOS_ECT}, 12998943Sluigi { "ip tos option", 0}, 13098943Sluigi { NULL, 0 } 13198943Sluigi}; 13298943Sluigi 13398943Sluigistatic struct _s_x limit_masks[] = { 13498943Sluigi {"all", DYN_SRC_ADDR|DYN_SRC_PORT|DYN_DST_ADDR|DYN_DST_PORT}, 13598943Sluigi {"src-addr", DYN_SRC_ADDR}, 13698943Sluigi {"src-port", DYN_SRC_PORT}, 13798943Sluigi {"dst-addr", DYN_DST_ADDR}, 13898943Sluigi {"dst-port", DYN_DST_PORT}, 13998943Sluigi {NULL, 0} 14098943Sluigi}; 14198943Sluigi 14298943Sluigi/* 14398943Sluigi * we use IPPROTO_ETHERTYPE as a fake protocol id to call the print routines 14498943Sluigi * This is only used in this code. 14598943Sluigi */ 14698943Sluigi#define IPPROTO_ETHERTYPE 0x1000 14798943Sluigistatic struct _s_x ether_types[] = { 14898943Sluigi /* 14998943Sluigi * Note, we cannot use "-:&/" in the names because they are field 15098943Sluigi * separators in the type specifications. Also, we use s = NULL as 15198943Sluigi * end-delimiter, because a type of 0 can be legal. 15298943Sluigi */ 15398943Sluigi { "ip", 0x0800 }, 15498943Sluigi { "ipv4", 0x0800 }, 15598943Sluigi { "ipv6", 0x86dd }, 15698943Sluigi { "arp", 0x0806 }, 15798943Sluigi { "rarp", 0x8035 }, 15898943Sluigi { "vlan", 0x8100 }, 15998943Sluigi { "loop", 0x9000 }, 16098943Sluigi { "trail", 0x1000 }, 16198943Sluigi { "at", 0x809b }, 16298943Sluigi { "atalk", 0x809b }, 16398943Sluigi { "aarp", 0x80f3 }, 16498943Sluigi { "pppoe_disc", 0x8863 }, 16598943Sluigi { "pppoe_sess", 0x8864 }, 16698943Sluigi { "ipx_8022", 0x00E0 }, 16798943Sluigi { "ipx_8023", 0x0000 }, 16898943Sluigi { "ipx_ii", 0x8137 }, 16998943Sluigi { "ipx_snap", 0x8137 }, 17098943Sluigi { "ipx", 0x8137 }, 17198943Sluigi { "ns", 0x0600 }, 17298943Sluigi { NULL, 0 } 17398943Sluigi}; 17498943Sluigi 17598943Sluigistatic void show_usage(void); 17698943Sluigi 17798943Sluigienum tokens { 17898943Sluigi TOK_NULL=0, 17998943Sluigi 18098943Sluigi TOK_OR, 18198943Sluigi TOK_NOT, 182101641Sluigi TOK_STARTBRACE, 183101641Sluigi TOK_ENDBRACE, 18498943Sluigi 18598943Sluigi TOK_ACCEPT, 18698943Sluigi TOK_COUNT, 18798943Sluigi TOK_PIPE, 18898943Sluigi TOK_QUEUE, 18998943Sluigi TOK_DIVERT, 19098943Sluigi TOK_TEE, 19198943Sluigi TOK_FORWARD, 19298943Sluigi TOK_SKIPTO, 19398943Sluigi TOK_DENY, 19498943Sluigi TOK_REJECT, 19598943Sluigi TOK_RESET, 19698943Sluigi TOK_UNREACH, 19798943Sluigi TOK_CHECKSTATE, 19898943Sluigi 19998943Sluigi TOK_UID, 20098943Sluigi TOK_GID, 20198943Sluigi TOK_IN, 20298943Sluigi TOK_LIMIT, 20398943Sluigi TOK_KEEPSTATE, 20498943Sluigi TOK_LAYER2, 20598943Sluigi TOK_OUT, 20698943Sluigi TOK_XMIT, 20798943Sluigi TOK_RECV, 20898943Sluigi TOK_VIA, 20998943Sluigi TOK_FRAG, 21098943Sluigi TOK_IPOPTS, 21198943Sluigi TOK_IPLEN, 21298943Sluigi TOK_IPID, 21398943Sluigi TOK_IPPRECEDENCE, 21498943Sluigi TOK_IPTOS, 21598943Sluigi TOK_IPTTL, 21698943Sluigi TOK_IPVER, 21798943Sluigi TOK_ESTAB, 21898943Sluigi TOK_SETUP, 21998943Sluigi TOK_TCPFLAGS, 22098943Sluigi TOK_TCPOPTS, 22198943Sluigi TOK_TCPSEQ, 22298943Sluigi TOK_TCPACK, 22398943Sluigi TOK_TCPWIN, 22498943Sluigi TOK_ICMPTYPES, 225102087Sluigi TOK_MAC, 226102087Sluigi TOK_MACTYPE, 227112250Scjc TOK_VERREVPATH, 22898943Sluigi 22998943Sluigi TOK_PLR, 230101978Sluigi TOK_NOERROR, 23198943Sluigi TOK_BUCKETS, 23298943Sluigi TOK_DSTIP, 23398943Sluigi TOK_SRCIP, 23498943Sluigi TOK_DSTPORT, 23598943Sluigi TOK_SRCPORT, 23698943Sluigi TOK_ALL, 23798943Sluigi TOK_MASK, 23898943Sluigi TOK_BW, 23998943Sluigi TOK_DELAY, 24098943Sluigi TOK_RED, 24198943Sluigi TOK_GRED, 24298943Sluigi TOK_DROPTAIL, 24398943Sluigi TOK_PROTO, 24498943Sluigi TOK_WEIGHT, 24598943Sluigi}; 24698943Sluigi 24798943Sluigistruct _s_x dummynet_params[] = { 24898943Sluigi { "plr", TOK_PLR }, 249101978Sluigi { "noerror", TOK_NOERROR }, 25098943Sluigi { "buckets", TOK_BUCKETS }, 25198943Sluigi { "dst-ip", TOK_DSTIP }, 25298943Sluigi { "src-ip", TOK_SRCIP }, 25398943Sluigi { "dst-port", TOK_DSTPORT }, 25498943Sluigi { "src-port", TOK_SRCPORT }, 25598943Sluigi { "proto", TOK_PROTO }, 25698943Sluigi { "weight", TOK_WEIGHT }, 25798943Sluigi { "all", TOK_ALL }, 25898943Sluigi { "mask", TOK_MASK }, 25998943Sluigi { "droptail", TOK_DROPTAIL }, 26098943Sluigi { "red", TOK_RED }, 26198943Sluigi { "gred", TOK_GRED }, 26298943Sluigi { "bw", TOK_BW }, 26398943Sluigi { "bandwidth", TOK_BW }, 26498943Sluigi { "delay", TOK_DELAY }, 26599475Sluigi { "pipe", TOK_PIPE }, 26698943Sluigi { "queue", TOK_QUEUE }, 26798943Sluigi { "dummynet-params", TOK_NULL }, 26898943Sluigi { NULL, 0 } 26998943Sluigi}; 27098943Sluigi 27198943Sluigistruct _s_x rule_actions[] = { 27298943Sluigi { "accept", TOK_ACCEPT }, 27398943Sluigi { "pass", TOK_ACCEPT }, 27498943Sluigi { "allow", TOK_ACCEPT }, 27598943Sluigi { "permit", TOK_ACCEPT }, 27698943Sluigi { "count", TOK_COUNT }, 27798943Sluigi { "pipe", TOK_PIPE }, 27898943Sluigi { "queue", TOK_QUEUE }, 27998943Sluigi { "divert", TOK_DIVERT }, 28098943Sluigi { "tee", TOK_TEE }, 28198943Sluigi { "fwd", TOK_FORWARD }, 28298943Sluigi { "forward", TOK_FORWARD }, 28398943Sluigi { "skipto", TOK_SKIPTO }, 28498943Sluigi { "deny", TOK_DENY }, 28598943Sluigi { "drop", TOK_DENY }, 28698943Sluigi { "reject", TOK_REJECT }, 28798943Sluigi { "reset", TOK_RESET }, 28899475Sluigi { "unreach", TOK_UNREACH }, 28998943Sluigi { "check-state", TOK_CHECKSTATE }, 29098943Sluigi { NULL, TOK_NULL }, 29198943Sluigi { NULL, 0 } 29298943Sluigi}; 29398943Sluigi 29498943Sluigistruct _s_x rule_options[] = { 29598943Sluigi { "uid", TOK_UID }, 29698943Sluigi { "gid", TOK_GID }, 29798943Sluigi { "in", TOK_IN }, 29898943Sluigi { "limit", TOK_LIMIT }, 29998943Sluigi { "keep-state", TOK_KEEPSTATE }, 30098943Sluigi { "bridged", TOK_LAYER2 }, 30198943Sluigi { "layer2", TOK_LAYER2 }, 30298943Sluigi { "out", TOK_OUT }, 30398943Sluigi { "xmit", TOK_XMIT }, 30498943Sluigi { "recv", TOK_RECV }, 30598943Sluigi { "via", TOK_VIA }, 30698943Sluigi { "fragment", TOK_FRAG }, 30798943Sluigi { "frag", TOK_FRAG }, 30898943Sluigi { "ipoptions", TOK_IPOPTS }, 30998943Sluigi { "ipopts", TOK_IPOPTS }, 31098943Sluigi { "iplen", TOK_IPLEN }, 31198943Sluigi { "ipid", TOK_IPID }, 31298943Sluigi { "ipprecedence", TOK_IPPRECEDENCE }, 31398943Sluigi { "iptos", TOK_IPTOS }, 31498943Sluigi { "ipttl", TOK_IPTTL }, 31598943Sluigi { "ipversion", TOK_IPVER }, 31698943Sluigi { "ipver", TOK_IPVER }, 31798943Sluigi { "estab", TOK_ESTAB }, 31898943Sluigi { "established", TOK_ESTAB }, 31998943Sluigi { "setup", TOK_SETUP }, 32098943Sluigi { "tcpflags", TOK_TCPFLAGS }, 32198943Sluigi { "tcpflgs", TOK_TCPFLAGS }, 32298943Sluigi { "tcpoptions", TOK_TCPOPTS }, 32398943Sluigi { "tcpopts", TOK_TCPOPTS }, 32498943Sluigi { "tcpseq", TOK_TCPSEQ }, 32598943Sluigi { "tcpack", TOK_TCPACK }, 32698943Sluigi { "tcpwin", TOK_TCPWIN }, 32799909Sluigi { "icmptype", TOK_ICMPTYPES }, 32898943Sluigi { "icmptypes", TOK_ICMPTYPES }, 329102087Sluigi { "dst-ip", TOK_DSTIP }, 330102087Sluigi { "src-ip", TOK_SRCIP }, 331102087Sluigi { "dst-port", TOK_DSTPORT }, 332102087Sluigi { "src-port", TOK_SRCPORT }, 333102087Sluigi { "proto", TOK_PROTO }, 334102087Sluigi { "MAC", TOK_MAC }, 335102087Sluigi { "mac", TOK_MAC }, 336102087Sluigi { "mac-type", TOK_MACTYPE }, 337112250Scjc { "verrevpath", TOK_VERREVPATH }, 33898943Sluigi 33998943Sluigi { "not", TOK_NOT }, /* pseudo option */ 34098943Sluigi { "!", /* escape ? */ TOK_NOT }, /* pseudo option */ 34198943Sluigi { "or", TOK_OR }, /* pseudo option */ 34298943Sluigi { "|", /* escape */ TOK_OR }, /* pseudo option */ 343101641Sluigi { "{", TOK_STARTBRACE }, /* pseudo option */ 344101641Sluigi { "(", TOK_STARTBRACE }, /* pseudo option */ 345101641Sluigi { "}", TOK_ENDBRACE }, /* pseudo option */ 346101641Sluigi { ")", TOK_ENDBRACE }, /* pseudo option */ 34798943Sluigi { NULL, TOK_NULL }, 34898943Sluigi { NULL, 0 } 34998943Sluigi}; 35098943Sluigi 351115793Sticsostatic __inline u_int64_t 352115793Sticsoalign_uint64(u_int64_t *pll) { 353115793Sticso u_int64_t ret; 354115793Sticso 355115793Sticso bcopy (pll, &ret, sizeof(ret)); 356115793Sticso return ret; 357115793Sticso}; 358115793Sticso 35998943Sluigi/** 36098943Sluigi * match_token takes a table and a string, returns the value associated 36198943Sluigi * with the string (0 meaning an error in most cases) 36298943Sluigi */ 36398943Sluigistatic int 36498943Sluigimatch_token(struct _s_x *table, char *string) 36598943Sluigi{ 36698943Sluigi struct _s_x *pt; 36798943Sluigi int i = strlen(string); 36898943Sluigi 36998943Sluigi for (pt = table ; i && pt->s != NULL ; pt++) 37098943Sluigi if (strlen(pt->s) == i && !bcmp(string, pt->s, i)) 37198943Sluigi return pt->x; 37298943Sluigi return -1; 37398943Sluigi}; 37498943Sluigi 37598943Sluigistatic char * 37698943Sluigimatch_value(struct _s_x *p, u_int32_t value) 37798943Sluigi{ 37898943Sluigi for (; p->s != NULL; p++) 37998943Sluigi if (p->x == value) 38098943Sluigi return p->s; 38198943Sluigi return NULL; 38298943Sluigi} 38398943Sluigi 38498943Sluigi/* 38598943Sluigi * prints one port, symbolic or numeric 38698943Sluigi */ 38798943Sluigistatic void 38898943Sluigiprint_port(int proto, u_int16_t port) 38998943Sluigi{ 39098943Sluigi 39198943Sluigi if (proto == IPPROTO_ETHERTYPE) { 39298943Sluigi char *s; 39398943Sluigi 39498943Sluigi if (do_resolv && (s = match_value(ether_types, port)) ) 39598943Sluigi printf("%s", s); 39698943Sluigi else 39798943Sluigi printf("0x%04x", port); 39898943Sluigi } else { 39998943Sluigi struct servent *se = NULL; 40098943Sluigi if (do_resolv) { 40198943Sluigi struct protoent *pe = getprotobynumber(proto); 40298943Sluigi 40398943Sluigi se = getservbyport(htons(port), pe ? pe->p_name : NULL); 40498943Sluigi } 40598943Sluigi if (se) 40698943Sluigi printf("%s", se->s_name); 40798943Sluigi else 40898943Sluigi printf("%d", port); 40998943Sluigi } 41098943Sluigi} 41198943Sluigi 41298943Sluigi/* 41398943Sluigi * print the values in a list of ports 41498943Sluigi * XXX todo: add support for mask. 41598943Sluigi */ 41698943Sluigistatic void 417102087Sluigiprint_newports(ipfw_insn_u16 *cmd, int proto, int opcode) 41898943Sluigi{ 41998943Sluigi u_int16_t *p = cmd->ports; 42098943Sluigi int i; 421116690Sluigi char *sep; 42298943Sluigi 42398943Sluigi if (cmd->o.len & F_NOT) 42498943Sluigi printf(" not"); 425116690Sluigi if (opcode != 0) { 426116690Sluigi switch (opcode) { 427116690Sluigi case O_IP_DSTPORT: 428116690Sluigi sep = "dst-port"; 429116690Sluigi break; 430116690Sluigi case O_IP_SRCPORT: 431116690Sluigi sep = "src-port"; 432116690Sluigi break; 433116690Sluigi case O_IPID: 434116690Sluigi sep = "ipid"; 435116690Sluigi break; 436116690Sluigi case O_IPLEN: 437116690Sluigi sep = "iplen"; 438116690Sluigi break; 439116690Sluigi case O_IPTTL: 440116690Sluigi sep = "ipttl"; 441116690Sluigi break; 442116690Sluigi case O_MAC_TYPE: 443116690Sluigi sep = "mac-type"; 444116690Sluigi break; 445116690Sluigi default: 446116690Sluigi sep = "???"; 447116690Sluigi break; 448116690Sluigi } 449116690Sluigi printf (" %s", sep); 450116690Sluigi } 451116690Sluigi sep = " "; 45298943Sluigi for (i = F_LEN((ipfw_insn *)cmd) - 1; i > 0; i--, p += 2) { 45398943Sluigi printf(sep); 45498943Sluigi print_port(proto, p[0]); 45598943Sluigi if (p[0] != p[1]) { 45698943Sluigi printf("-"); 45798943Sluigi print_port(proto, p[1]); 45898943Sluigi } 45998943Sluigi sep = ","; 46098943Sluigi } 46198943Sluigi} 46298943Sluigi 46398943Sluigi/* 46498943Sluigi * Like strtol, but also translates service names into port numbers 46598943Sluigi * for some protocols. 46698943Sluigi * In particular: 46798943Sluigi * proto == -1 disables the protocol check; 46898943Sluigi * proto == IPPROTO_ETHERTYPE looks up an internal table 46998943Sluigi * proto == <some value in /etc/protocols> matches the values there. 470101628Sluigi * Returns *end == s in case the parameter is not found. 47198943Sluigi */ 47298943Sluigistatic int 47398943Sluigistrtoport(char *s, char **end, int base, int proto) 47498943Sluigi{ 475101628Sluigi char *p, *buf; 476101628Sluigi char *s1; 47798943Sluigi int i; 47898943Sluigi 479101628Sluigi *end = s; /* default - not found */ 48098943Sluigi if ( *s == '\0') 481101628Sluigi return 0; /* not found */ 482106505Smaxim 48398943Sluigi if (isdigit(*s)) 48498943Sluigi return strtol(s, end, base); 48598943Sluigi 48698943Sluigi /* 487101628Sluigi * find separator. '\\' escapes the next char. 48898943Sluigi */ 489101628Sluigi for (s1 = s; *s1 && (isalnum(*s1) || *s1 == '\\') ; s1++) 490101628Sluigi if (*s1 == '\\' && s1[1] != '\0') 491101628Sluigi s1++; 49298943Sluigi 493101628Sluigi buf = malloc(s1 - s + 1); 494101628Sluigi if (buf == NULL) 495101628Sluigi return 0; 496101628Sluigi 497101628Sluigi /* 498101628Sluigi * copy into a buffer skipping backslashes 499101628Sluigi */ 500101628Sluigi for (p = s, i = 0; p != s1 ; p++) 501101628Sluigi if ( *p != '\\') 502101628Sluigi buf[i++] = *p; 503101628Sluigi buf[i++] = '\0'; 504101628Sluigi 50598943Sluigi if (proto == IPPROTO_ETHERTYPE) { 506101628Sluigi i = match_token(ether_types, buf); 507101628Sluigi free(buf); 508101628Sluigi if (i != -1) { /* found */ 50998943Sluigi *end = s1; 51098943Sluigi return i; 51198943Sluigi } 51298943Sluigi } else { 51398943Sluigi struct protoent *pe = NULL; 51498943Sluigi struct servent *se; 51598943Sluigi 51698943Sluigi if (proto != 0) 51798943Sluigi pe = getprotobynumber(proto); 51898943Sluigi setservent(1); 519101628Sluigi se = getservbyname(buf, pe ? pe->p_name : NULL); 520101628Sluigi free(buf); 52198943Sluigi if (se != NULL) { 52298943Sluigi *end = s1; 52398943Sluigi return ntohs(se->s_port); 52498943Sluigi } 52598943Sluigi } 526101628Sluigi return 0; /* not found */ 52798943Sluigi} 52898943Sluigi 52998943Sluigi/* 53098943Sluigi * fill the body of the command with the list of port ranges. 53198943Sluigi * At the moment it only understands numeric ranges. 53298943Sluigi */ 53398943Sluigistatic int 53498943Sluigifill_newports(ipfw_insn_u16 *cmd, char *av, int proto) 53598943Sluigi{ 53698943Sluigi u_int16_t *p = cmd->ports; 53798943Sluigi int i = 0; 538102087Sluigi char *s = av; 53998943Sluigi 540102087Sluigi while (*s) { 54198943Sluigi u_int16_t a, b; 54298943Sluigi 54398943Sluigi a = strtoport(av, &s, 0, proto); 54498943Sluigi if (s == av) /* no parameter */ 54598943Sluigi break; 54698943Sluigi if (*s == '-') { /* a range */ 54798943Sluigi av = s+1; 54898943Sluigi b = strtoport(av, &s, 0, proto); 54998943Sluigi if (s == av) /* no parameter */ 55098943Sluigi break; 55198943Sluigi p[0] = a; 55298943Sluigi p[1] = b; 55398943Sluigi } else if (*s == ',' || *s == '\0' ) { 55498943Sluigi p[0] = p[1] = a; 555101978Sluigi } else { /* invalid separator */ 556101978Sluigi errx(EX_DATAERR, "invalid separator <%c> in <%s>\n", 557101978Sluigi *s, av); 558101978Sluigi } 559102087Sluigi i++; 560102087Sluigi p += 2; 56198943Sluigi av = s+1; 56298943Sluigi } 56398943Sluigi if (i > 0) { 56498943Sluigi if (i+1 > F_LEN_MASK) 565102087Sluigi errx(EX_DATAERR, "too many ports/ranges\n"); 56698943Sluigi cmd->o.len |= i+1; /* leave F_NOT and F_OR untouched */ 56798943Sluigi } 56898943Sluigi return i; 56998943Sluigi} 57098943Sluigi 57198943Sluigistatic struct _s_x icmpcodes[] = { 57298943Sluigi { "net", ICMP_UNREACH_NET }, 57398943Sluigi { "host", ICMP_UNREACH_HOST }, 57498943Sluigi { "protocol", ICMP_UNREACH_PROTOCOL }, 57598943Sluigi { "port", ICMP_UNREACH_PORT }, 57698943Sluigi { "needfrag", ICMP_UNREACH_NEEDFRAG }, 57798943Sluigi { "srcfail", ICMP_UNREACH_SRCFAIL }, 57898943Sluigi { "net-unknown", ICMP_UNREACH_NET_UNKNOWN }, 57998943Sluigi { "host-unknown", ICMP_UNREACH_HOST_UNKNOWN }, 58098943Sluigi { "isolated", ICMP_UNREACH_ISOLATED }, 58198943Sluigi { "net-prohib", ICMP_UNREACH_NET_PROHIB }, 58298943Sluigi { "host-prohib", ICMP_UNREACH_HOST_PROHIB }, 58398943Sluigi { "tosnet", ICMP_UNREACH_TOSNET }, 58498943Sluigi { "toshost", ICMP_UNREACH_TOSHOST }, 58598943Sluigi { "filter-prohib", ICMP_UNREACH_FILTER_PROHIB }, 58698943Sluigi { "host-precedence", ICMP_UNREACH_HOST_PRECEDENCE }, 58798943Sluigi { "precedence-cutoff", ICMP_UNREACH_PRECEDENCE_CUTOFF }, 58898943Sluigi { NULL, 0 } 58998943Sluigi}; 59098943Sluigi 59198943Sluigistatic void 59298943Sluigifill_reject_code(u_short *codep, char *str) 59398943Sluigi{ 59498943Sluigi int val; 59598943Sluigi char *s; 59698943Sluigi 59798943Sluigi val = strtoul(str, &s, 0); 59898943Sluigi if (s == str || *s != '\0' || val >= 0x100) 59998943Sluigi val = match_token(icmpcodes, str); 600102087Sluigi if (val < 0) 60198943Sluigi errx(EX_DATAERR, "unknown ICMP unreachable code ``%s''", str); 60298943Sluigi *codep = val; 60398943Sluigi return; 60498943Sluigi} 60598943Sluigi 60698943Sluigistatic void 60799475Sluigiprint_reject_code(u_int16_t code) 60898943Sluigi{ 60998943Sluigi char *s = match_value(icmpcodes, code); 61098943Sluigi 61198943Sluigi if (s != NULL) 61299475Sluigi printf("unreach %s", s); 61398943Sluigi else 61499475Sluigi printf("unreach %u", code); 61598943Sluigi} 61698943Sluigi 61798943Sluigi/* 61898943Sluigi * Returns the number of bits set (from left) in a contiguous bitmask, 61998943Sluigi * or -1 if the mask is not contiguous. 62098943Sluigi * XXX this needs a proper fix. 62198943Sluigi * This effectively works on masks in big-endian (network) format. 62298943Sluigi * when compiled on little endian architectures. 62398943Sluigi * 62498943Sluigi * First bit is bit 7 of the first byte -- note, for MAC addresses, 62598943Sluigi * the first bit on the wire is bit 0 of the first byte. 62698943Sluigi * len is the max length in bits. 62798943Sluigi */ 62898943Sluigistatic int 62998943Sluigicontigmask(u_char *p, int len) 63098943Sluigi{ 63198943Sluigi int i, n; 63298943Sluigi for (i=0; i<len ; i++) 63398943Sluigi if ( (p[i/8] & (1 << (7 - (i%8)))) == 0) /* first bit unset */ 63498943Sluigi break; 63598943Sluigi for (n=i+1; n < len; n++) 63698943Sluigi if ( (p[n/8] & (1 << (7 - (n%8)))) != 0) 63798943Sluigi return -1; /* mask not contiguous */ 63898943Sluigi return i; 63998943Sluigi} 64098943Sluigi 64198943Sluigi/* 64298943Sluigi * print flags set/clear in the two bitmasks passed as parameters. 64398943Sluigi * There is a specialized check for f_tcpflags. 64498943Sluigi */ 64598943Sluigistatic void 64698943Sluigiprint_flags(char *name, ipfw_insn *cmd, struct _s_x *list) 64798943Sluigi{ 64898943Sluigi char *comma=""; 64998943Sluigi int i; 65098943Sluigi u_char set = cmd->arg1 & 0xff; 65198943Sluigi u_char clear = (cmd->arg1 >> 8) & 0xff; 65298943Sluigi 65398943Sluigi if (list == f_tcpflags && set == TH_SYN && clear == TH_ACK) { 65498943Sluigi printf(" setup"); 65598943Sluigi return; 65698943Sluigi } 65798943Sluigi 65898943Sluigi printf(" %s ", name); 65998943Sluigi for (i=0; list[i].x != 0; i++) { 66098943Sluigi if (set & list[i].x) { 66198943Sluigi set &= ~list[i].x; 66298943Sluigi printf("%s%s", comma, list[i].s); 66398943Sluigi comma = ","; 66498943Sluigi } 66598943Sluigi if (clear & list[i].x) { 66698943Sluigi clear &= ~list[i].x; 66798943Sluigi printf("%s!%s", comma, list[i].s); 66898943Sluigi comma = ","; 66998943Sluigi } 67098943Sluigi } 67198943Sluigi} 67298943Sluigi 67398943Sluigi/* 67498943Sluigi * Print the ip address contained in a command. 67598943Sluigi */ 67698943Sluigistatic void 677102087Sluigiprint_ip(ipfw_insn_ip *cmd, char *s) 67898943Sluigi{ 67998943Sluigi struct hostent *he = NULL; 68098943Sluigi int mb; 68198943Sluigi 682102087Sluigi printf("%s%s ", cmd->o.len & F_NOT ? " not": "", s); 68398943Sluigi 68498943Sluigi if (cmd->o.opcode == O_IP_SRC_ME || cmd->o.opcode == O_IP_DST_ME) { 68598943Sluigi printf("me"); 68698943Sluigi return; 68798943Sluigi } 68898943Sluigi if (cmd->o.opcode == O_IP_SRC_SET || cmd->o.opcode == O_IP_DST_SET) { 68998943Sluigi u_int32_t x, *d; 690116716Sluigi int i, j; 69198943Sluigi char comma = '{'; 69298943Sluigi 69398943Sluigi x = cmd->o.arg1 - 1; 69498943Sluigi x = htonl( ~x ); 69598943Sluigi cmd->addr.s_addr = htonl(cmd->addr.s_addr); 69698943Sluigi printf("%s/%d", inet_ntoa(cmd->addr), 69798943Sluigi contigmask((u_char *)&x, 32)); 69898943Sluigi x = cmd->addr.s_addr = htonl(cmd->addr.s_addr); 69998943Sluigi x &= 0xff; /* base */ 70098943Sluigi d = (u_int32_t *)&(cmd->mask); 701116716Sluigi /* 702116716Sluigi * Print bits and ranges. 703116716Sluigi * Locate first bit set (i), then locate first bit unset (j). 704116716Sluigi * If we have 3+ consecutive bits set, then print them as a 705116716Sluigi * range, otherwise only print the initial bit and rescan. 706116716Sluigi */ 70798943Sluigi for (i=0; i < cmd->o.arg1; i++) 708116716Sluigi if (d[i/32] & (1<<(i & 31))) { 709116716Sluigi for (j=i+1; j < cmd->o.arg1; j++) 710116716Sluigi if (!(d[ j/32] & (1<<(j & 31)))) 711116716Sluigi break; 71298943Sluigi printf("%c%d", comma, i+x); 713116716Sluigi if (j>i+2) { /* range has at least 3 elements */ 714116716Sluigi printf("-%d", j-1+x); 715116716Sluigi i = j-1; 716116716Sluigi } 71798943Sluigi comma = ','; 71898943Sluigi } 71998943Sluigi printf("}"); 72098943Sluigi return; 72198943Sluigi } 72298943Sluigi if (cmd->o.opcode == O_IP_SRC || cmd->o.opcode == O_IP_DST) 72398943Sluigi mb = 32; 72498943Sluigi else 72598943Sluigi mb = contigmask((u_char *)&(cmd->mask.s_addr), 32); 72698943Sluigi if (mb == 32 && do_resolv) 72798943Sluigi he = gethostbyaddr((char *)&(cmd->addr.s_addr), 72898943Sluigi sizeof(u_long), AF_INET); 72998943Sluigi if (he != NULL) /* resolved to name */ 73098943Sluigi printf("%s", he->h_name); 73198943Sluigi else if (mb == 0) /* any */ 73298943Sluigi printf("any"); 73398943Sluigi else { /* numeric IP followed by some kind of mask */ 73498943Sluigi printf("%s", inet_ntoa(cmd->addr)); 73598943Sluigi if (mb < 0) 73698943Sluigi printf(":%s", inet_ntoa(cmd->mask)); 73798943Sluigi else if (mb < 32) 73898943Sluigi printf("/%d", mb); 73998943Sluigi } 74098943Sluigi} 74198943Sluigi 74298943Sluigi/* 74398943Sluigi * prints a MAC address/mask pair 74498943Sluigi */ 74598943Sluigistatic void 74698943Sluigiprint_mac(u_char *addr, u_char *mask) 74798943Sluigi{ 74898943Sluigi int l = contigmask(mask, 48); 74998943Sluigi 75098943Sluigi if (l == 0) 75198943Sluigi printf(" any"); 75298943Sluigi else { 75398943Sluigi printf(" %02x:%02x:%02x:%02x:%02x:%02x", 75498943Sluigi addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 75598943Sluigi if (l == -1) 75698943Sluigi printf("&%02x:%02x:%02x:%02x:%02x:%02x", 75798943Sluigi mask[0], mask[1], mask[2], 75898943Sluigi mask[3], mask[4], mask[5]); 75998943Sluigi else if (l < 48) 76098943Sluigi printf("/%d", l); 76198943Sluigi } 76298943Sluigi} 76398943Sluigi 76499475Sluigistatic void 76599475Sluigifill_icmptypes(ipfw_insn_u32 *cmd, char *av) 76699475Sluigi{ 76799475Sluigi u_int8_t type; 76898943Sluigi 76999475Sluigi cmd->d[0] = 0; 77099475Sluigi while (*av) { 77199475Sluigi if (*av == ',') 77299475Sluigi av++; 77399475Sluigi 77499475Sluigi type = strtoul(av, &av, 0); 77599475Sluigi 77699475Sluigi if (*av != ',' && *av != '\0') 77799475Sluigi errx(EX_DATAERR, "invalid ICMP type"); 77899475Sluigi 77999475Sluigi if (type > 31) 78099475Sluigi errx(EX_DATAERR, "ICMP type out of range"); 78199475Sluigi 78299475Sluigi cmd->d[0] |= 1 << type; 78399475Sluigi } 78499475Sluigi cmd->o.opcode = O_ICMPTYPE; 78599475Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 78699475Sluigi} 78799475Sluigi 78899475Sluigistatic void 78999475Sluigiprint_icmptypes(ipfw_insn_u32 *cmd) 79099475Sluigi{ 79199475Sluigi int i; 79299475Sluigi char sep= ' '; 79399475Sluigi 79499475Sluigi printf(" icmptypes"); 79599475Sluigi for (i = 0; i < 32; i++) { 79699475Sluigi if ( (cmd->d[0] & (1 << (i))) == 0) 79799475Sluigi continue; 79899475Sluigi printf("%c%d", sep, i); 79999475Sluigi sep = ','; 80099475Sluigi } 80199475Sluigi} 80299475Sluigi 80398943Sluigi/* 80498943Sluigi * show_ipfw() prints the body of an ipfw rule. 80598943Sluigi * Because the standard rule has at least proto src_ip dst_ip, we use 80698943Sluigi * a helper function to produce these entries if not provided explicitly. 807102087Sluigi * The first argument is the list of fields we have, the second is 808102087Sluigi * the list of fields we want to be printed. 809101978Sluigi * 810102087Sluigi * Special cases if we have provided a MAC header: 811102087Sluigi * + if the rule does not contain IP addresses/ports, do not print them; 812102087Sluigi * + if the rule does not contain an IP proto, print "all" instead of "ip"; 813102087Sluigi * 814102087Sluigi * Once we have 'have_options', IP header fields are printed as options. 81598943Sluigi */ 816101978Sluigi#define HAVE_PROTO 0x0001 817101978Sluigi#define HAVE_SRCIP 0x0002 818101978Sluigi#define HAVE_DSTIP 0x0004 819101978Sluigi#define HAVE_MAC 0x0008 820101978Sluigi#define HAVE_MACTYPE 0x0010 821102087Sluigi#define HAVE_OPTIONS 0x8000 82298943Sluigi 823101978Sluigi#define HAVE_IP (HAVE_PROTO | HAVE_SRCIP | HAVE_DSTIP) 82498943Sluigistatic void 825102087Sluigishow_prerequisites(int *flags, int want, int cmd) 82698943Sluigi{ 827102087Sluigi if ( (*flags & HAVE_IP) == HAVE_IP) 828102087Sluigi *flags |= HAVE_OPTIONS; 829102087Sluigi 830102087Sluigi if ( (*flags & (HAVE_MAC|HAVE_MACTYPE|HAVE_OPTIONS)) == HAVE_MAC && 831102087Sluigi cmd != O_MAC_TYPE) { 832102087Sluigi /* 833102087Sluigi * mac-type was optimized out by the compiler, 834102087Sluigi * restore it 835102087Sluigi */ 836102087Sluigi printf(" any"); 837102087Sluigi *flags |= HAVE_MACTYPE | HAVE_OPTIONS; 838102087Sluigi return; 839101978Sluigi } 840102087Sluigi if ( !(*flags & HAVE_OPTIONS)) { 841102087Sluigi if ( !(*flags & HAVE_PROTO) && (want & HAVE_PROTO)) 842102087Sluigi printf(" ip"); 843102087Sluigi if ( !(*flags & HAVE_SRCIP) && (want & HAVE_SRCIP)) 844102087Sluigi printf(" from any"); 845102087Sluigi if ( !(*flags & HAVE_DSTIP) && (want & HAVE_DSTIP)) 846102087Sluigi printf(" to any"); 847102087Sluigi } 84898943Sluigi *flags |= want; 84998943Sluigi} 85098943Sluigi 85198943Sluigistatic void 852112189Smaximshow_ipfw(struct ip_fw *rule, int pcwidth, int bcwidth) 85398943Sluigi{ 854107291Skeramida static int twidth = 0; 85598943Sluigi int l; 85698943Sluigi ipfw_insn *cmd; 85798943Sluigi int proto = 0; /* default */ 85898943Sluigi int flags = 0; /* prerequisites */ 85998943Sluigi ipfw_insn_log *logptr = NULL; /* set if we find an O_LOG */ 86098943Sluigi int or_block = 0; /* we are in an or block */ 861115793Sticso u_int32_t set_disable; 86298943Sluigi 863115793Sticso bcopy(&rule->next_rule, &set_disable, sizeof(set_disable)); 864101628Sluigi 865101628Sluigi if (set_disable & (1 << rule->set)) { /* disabled */ 866101628Sluigi if (!show_sets) 867101628Sluigi return; 868101628Sluigi else 869101628Sluigi printf("# DISABLED "); 870101628Sluigi } 87198943Sluigi printf("%05u ", rule->rulenum); 87298943Sluigi 87398943Sluigi if (do_acct) 874115793Sticso printf("%*llu %*llu ", pcwidth, align_uint64(&rule->pcnt), 875115793Sticso bcwidth, align_uint64(&rule->bcnt)); 87698943Sluigi 87798943Sluigi if (do_time) { 878107291Skeramida char timestr[30]; 879107291Skeramida time_t t = (time_t)0; 880107291Skeramida 881107291Skeramida if (twidth == 0) { 882107291Skeramida strcpy(timestr, ctime(&t)); 883107291Skeramida *strchr(timestr, '\n') = '\0'; 884107291Skeramida twidth = strlen(timestr); 885107291Skeramida } 88698943Sluigi if (rule->timestamp) { 887107291Skeramida t = _long_to_time(rule->timestamp); 88898943Sluigi 88998943Sluigi strcpy(timestr, ctime(&t)); 89098943Sluigi *strchr(timestr, '\n') = '\0'; 89198943Sluigi printf("%s ", timestr); 89298943Sluigi } else { 893107291Skeramida printf("%*s", twidth, " "); 89498943Sluigi } 89598943Sluigi } 89698943Sluigi 897101628Sluigi if (show_sets) 898101628Sluigi printf("set %d ", rule->set); 899101628Sluigi 90098943Sluigi /* 901107289Sluigi * print the optional "match probability" 902107289Sluigi */ 903107289Sluigi if (rule->cmd_len > 0) { 904107289Sluigi cmd = rule->cmd ; 905107289Sluigi if (cmd->opcode == O_PROB) { 906107289Sluigi ipfw_insn_u32 *p = (ipfw_insn_u32 *)cmd; 907107289Sluigi double d = 1.0 * p->d[0]; 908107289Sluigi 909107289Sluigi d = (d / 0x7fffffff); 910107289Sluigi printf("prob %f ", d); 911107289Sluigi } 912107289Sluigi } 913107289Sluigi 914107289Sluigi /* 91598943Sluigi * first print actions 91698943Sluigi */ 91798943Sluigi for (l = rule->cmd_len - rule->act_ofs, cmd = ACTION_PTR(rule); 91898943Sluigi l > 0 ; l -= F_LEN(cmd), cmd += F_LEN(cmd)) { 91998943Sluigi switch(cmd->opcode) { 92098943Sluigi case O_CHECK_STATE: 92198943Sluigi printf("check-state"); 922102087Sluigi flags = HAVE_IP; /* avoid printing anything else */ 92398943Sluigi break; 92498943Sluigi 92598943Sluigi case O_ACCEPT: 92698943Sluigi printf("allow"); 92798943Sluigi break; 92898943Sluigi 92998943Sluigi case O_COUNT: 93098943Sluigi printf("count"); 93198943Sluigi break; 93298943Sluigi 93398943Sluigi case O_DENY: 93498943Sluigi printf("deny"); 93598943Sluigi break; 93698943Sluigi 93799475Sluigi case O_REJECT: 93899475Sluigi if (cmd->arg1 == ICMP_REJECT_RST) 93999475Sluigi printf("reset"); 94099475Sluigi else if (cmd->arg1 == ICMP_UNREACH_HOST) 94199475Sluigi printf("reject"); 94299475Sluigi else 94399475Sluigi print_reject_code(cmd->arg1); 94499475Sluigi break; 94599475Sluigi 94698943Sluigi case O_SKIPTO: 94798943Sluigi printf("skipto %u", cmd->arg1); 94898943Sluigi break; 94998943Sluigi 95098943Sluigi case O_PIPE: 95198943Sluigi printf("pipe %u", cmd->arg1); 95298943Sluigi break; 95398943Sluigi 95498943Sluigi case O_QUEUE: 95598943Sluigi printf("queue %u", cmd->arg1); 95698943Sluigi break; 95798943Sluigi 95898943Sluigi case O_DIVERT: 95998943Sluigi printf("divert %u", cmd->arg1); 96098943Sluigi break; 96198943Sluigi 96298943Sluigi case O_TEE: 96398943Sluigi printf("tee %u", cmd->arg1); 96498943Sluigi break; 96598943Sluigi 96698943Sluigi case O_FORWARD_IP: 96798943Sluigi { 96898943Sluigi ipfw_insn_sa *s = (ipfw_insn_sa *)cmd; 96998943Sluigi 97098943Sluigi printf("fwd %s", inet_ntoa(s->sa.sin_addr)); 97198943Sluigi if (s->sa.sin_port) 972103241Sluigi printf(",%d", s->sa.sin_port); 97398943Sluigi } 97498943Sluigi break; 97598943Sluigi 97698943Sluigi case O_LOG: /* O_LOG is printed last */ 97798943Sluigi logptr = (ipfw_insn_log *)cmd; 97898943Sluigi break; 97998943Sluigi 98098943Sluigi default: 98198943Sluigi printf("** unrecognized action %d len %d", 98298943Sluigi cmd->opcode, cmd->len); 98398943Sluigi } 98498943Sluigi } 98598943Sluigi if (logptr) { 98698943Sluigi if (logptr->max_log > 0) 98799909Sluigi printf(" log logamount %d", logptr->max_log); 98898943Sluigi else 98999909Sluigi printf(" log"); 99098943Sluigi } 991102087Sluigi 99298943Sluigi /* 993102087Sluigi * then print the body. 99498943Sluigi */ 995102087Sluigi if (rule->_pad & 1) { /* empty rules before options */ 996102098Sluigi if (!do_compact) 997102098Sluigi printf(" ip from any to any"); 998102087Sluigi flags |= HAVE_IP | HAVE_OPTIONS; 999102087Sluigi } 1000102087Sluigi 100198943Sluigi for (l = rule->act_ofs, cmd = rule->cmd ; 100298943Sluigi l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 100399475Sluigi /* useful alias */ 100499475Sluigi ipfw_insn_u32 *cmd32 = (ipfw_insn_u32 *)cmd; 100598943Sluigi 1006102087Sluigi show_prerequisites(&flags, 0, cmd->opcode); 1007102087Sluigi 100898943Sluigi switch(cmd->opcode) { 1009107289Sluigi case O_PROB: 1010107289Sluigi break; /* done already */ 1011107289Sluigi 101298943Sluigi case O_PROBE_STATE: 101398943Sluigi break; /* no need to print anything here */ 101498943Sluigi 101598943Sluigi case O_MACADDR2: { 101698943Sluigi ipfw_insn_mac *m = (ipfw_insn_mac *)cmd; 1017102087Sluigi 1018102087Sluigi if ((cmd->len & F_OR) && !or_block) 1019102087Sluigi printf(" {"); 102098943Sluigi if (cmd->len & F_NOT) 102198943Sluigi printf(" not"); 1022102087Sluigi printf(" MAC"); 1023102087Sluigi flags |= HAVE_MAC; 102498943Sluigi print_mac( m->addr, m->mask); 102598943Sluigi print_mac( m->addr + 6, m->mask + 6); 102698943Sluigi } 102798943Sluigi break; 102898943Sluigi 102998943Sluigi case O_MAC_TYPE: 1030102087Sluigi if ((cmd->len & F_OR) && !or_block) 1031102087Sluigi printf(" {"); 1032102087Sluigi print_newports((ipfw_insn_u16 *)cmd, IPPROTO_ETHERTYPE, 1033102087Sluigi (flags & HAVE_OPTIONS) ? cmd->opcode : 0); 1034102087Sluigi flags |= HAVE_MAC | HAVE_MACTYPE | HAVE_OPTIONS; 103598943Sluigi break; 103698943Sluigi 103798943Sluigi case O_IP_SRC: 103898943Sluigi case O_IP_SRC_MASK: 103998943Sluigi case O_IP_SRC_ME: 104098943Sluigi case O_IP_SRC_SET: 1041102087Sluigi show_prerequisites(&flags, HAVE_PROTO, 0); 104298943Sluigi if (!(flags & HAVE_SRCIP)) 104398943Sluigi printf(" from"); 104498943Sluigi if ((cmd->len & F_OR) && !or_block) 104598943Sluigi printf(" {"); 1046102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1047102087Sluigi (flags & HAVE_OPTIONS) ? " src-ip" : ""); 104898943Sluigi flags |= HAVE_SRCIP; 104998943Sluigi break; 105098943Sluigi 105198943Sluigi case O_IP_DST: 105298943Sluigi case O_IP_DST_MASK: 105398943Sluigi case O_IP_DST_ME: 105498943Sluigi case O_IP_DST_SET: 1055102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 105698943Sluigi if (!(flags & HAVE_DSTIP)) 105798943Sluigi printf(" to"); 105898943Sluigi if ((cmd->len & F_OR) && !or_block) 105998943Sluigi printf(" {"); 1060102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1061102087Sluigi (flags & HAVE_OPTIONS) ? " dst-ip" : ""); 106298943Sluigi flags |= HAVE_DSTIP; 106398943Sluigi break; 106498943Sluigi 106598943Sluigi case O_IP_DSTPORT: 1066102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 106798943Sluigi case O_IP_SRCPORT: 1068102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 1069101641Sluigi if ((cmd->len & F_OR) && !or_block) 1070101641Sluigi printf(" {"); 1071102087Sluigi print_newports((ipfw_insn_u16 *)cmd, proto, 1072102087Sluigi (flags & HAVE_OPTIONS) ? cmd->opcode : 0); 107398943Sluigi break; 107498943Sluigi 107598943Sluigi case O_PROTO: { 107698943Sluigi struct protoent *pe; 107798943Sluigi 107898943Sluigi if ((cmd->len & F_OR) && !or_block) 107998943Sluigi printf(" {"); 108098943Sluigi if (cmd->len & F_NOT) 108198943Sluigi printf(" not"); 108298943Sluigi proto = cmd->arg1; 108398943Sluigi pe = getprotobynumber(cmd->arg1); 1084102087Sluigi if (flags & HAVE_OPTIONS) 1085102087Sluigi printf(" proto"); 108698943Sluigi if (pe) 108798943Sluigi printf(" %s", pe->p_name); 108898943Sluigi else 108998943Sluigi printf(" %u", cmd->arg1); 109098943Sluigi } 109198943Sluigi flags |= HAVE_PROTO; 109298943Sluigi break; 1093106505Smaxim 109498943Sluigi default: /*options ... */ 1095102087Sluigi show_prerequisites(&flags, HAVE_IP | HAVE_OPTIONS, 0); 109698943Sluigi if ((cmd->len & F_OR) && !or_block) 109798943Sluigi printf(" {"); 109898943Sluigi if (cmd->len & F_NOT && cmd->opcode != O_IN) 109998943Sluigi printf(" not"); 110098943Sluigi switch(cmd->opcode) { 110198943Sluigi case O_FRAG: 110298943Sluigi printf(" frag"); 110398943Sluigi break; 110498943Sluigi 110598943Sluigi case O_IN: 110698943Sluigi printf(cmd->len & F_NOT ? " out" : " in"); 110798943Sluigi break; 110898943Sluigi 110998943Sluigi case O_LAYER2: 111098943Sluigi printf(" layer2"); 111198943Sluigi break; 111298943Sluigi case O_XMIT: 111398943Sluigi case O_RECV: 111498943Sluigi case O_VIA: { 111598943Sluigi char *s; 111698943Sluigi ipfw_insn_if *cmdif = (ipfw_insn_if *)cmd; 111798943Sluigi 111898943Sluigi if (cmd->opcode == O_XMIT) 111998943Sluigi s = "xmit"; 112098943Sluigi else if (cmd->opcode == O_RECV) 112198943Sluigi s = "recv"; 112298943Sluigi else if (cmd->opcode == O_VIA) 112398943Sluigi s = "via"; 112498943Sluigi if (cmdif->name[0] == '\0') 112599475Sluigi printf(" %s %s", s, 112699475Sluigi inet_ntoa(cmdif->p.ip)); 112798943Sluigi else if (cmdif->p.unit == -1) 112898943Sluigi printf(" %s %s*", s, cmdif->name); 112998943Sluigi else 113099475Sluigi printf(" %s %s%d", s, cmdif->name, 113199475Sluigi cmdif->p.unit); 113298943Sluigi } 113398943Sluigi break; 113498943Sluigi 113598943Sluigi case O_IPID: 1136116690Sluigi if (F_LEN(cmd) == 1) 1137116690Sluigi printf(" ipid %u", cmd->arg1 ); 1138116690Sluigi else 1139116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1140116690Sluigi O_IPID); 114198943Sluigi break; 114298943Sluigi 114398943Sluigi case O_IPTTL: 1144116690Sluigi if (F_LEN(cmd) == 1) 1145116690Sluigi printf(" ipttl %u", cmd->arg1 ); 1146116690Sluigi else 1147116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1148116690Sluigi O_IPTTL); 114998943Sluigi break; 115098943Sluigi 115198943Sluigi case O_IPVER: 115298943Sluigi printf(" ipver %u", cmd->arg1 ); 115398943Sluigi break; 115498943Sluigi 115599475Sluigi case O_IPPRECEDENCE: 115699475Sluigi printf(" ipprecedence %u", (cmd->arg1) >> 5 ); 115799475Sluigi break; 115899475Sluigi 115998943Sluigi case O_IPLEN: 1160116690Sluigi if (F_LEN(cmd) == 1) 1161116690Sluigi printf(" iplen %u", cmd->arg1 ); 1162116690Sluigi else 1163116690Sluigi print_newports((ipfw_insn_u16 *)cmd, 0, 1164116690Sluigi O_IPLEN); 116598943Sluigi break; 116698943Sluigi 1167101116Sluigi case O_IPOPT: 116898943Sluigi print_flags("ipoptions", cmd, f_ipopts); 116998943Sluigi break; 117098943Sluigi 117199475Sluigi case O_IPTOS: 117299475Sluigi print_flags("iptos", cmd, f_iptos); 117399475Sluigi break; 117499475Sluigi 117599475Sluigi case O_ICMPTYPE: 117699475Sluigi print_icmptypes((ipfw_insn_u32 *)cmd); 117799475Sluigi break; 117899475Sluigi 117998943Sluigi case O_ESTAB: 118098943Sluigi printf(" established"); 118198943Sluigi break; 118298943Sluigi 118398943Sluigi case O_TCPFLAGS: 118498943Sluigi print_flags("tcpflags", cmd, f_tcpflags); 118598943Sluigi break; 118698943Sluigi 118798943Sluigi case O_TCPOPTS: 118898943Sluigi print_flags("tcpoptions", cmd, f_tcpopts); 118998943Sluigi break; 119098943Sluigi 119198943Sluigi case O_TCPWIN: 119298943Sluigi printf(" tcpwin %d", ntohs(cmd->arg1)); 119398943Sluigi break; 119498943Sluigi 119598943Sluigi case O_TCPACK: 119698943Sluigi printf(" tcpack %d", ntohl(cmd32->d[0])); 119798943Sluigi break; 119898943Sluigi 119998943Sluigi case O_TCPSEQ: 120098943Sluigi printf(" tcpseq %d", ntohl(cmd32->d[0])); 120198943Sluigi break; 120298943Sluigi 120398943Sluigi case O_UID: 120498943Sluigi { 120598943Sluigi struct passwd *pwd = getpwuid(cmd32->d[0]); 120698943Sluigi 120798943Sluigi if (pwd) 120898943Sluigi printf(" uid %s", pwd->pw_name); 120998943Sluigi else 121098943Sluigi printf(" uid %u", cmd32->d[0]); 121198943Sluigi } 121298943Sluigi break; 121398943Sluigi 121498943Sluigi case O_GID: 121598943Sluigi { 121698943Sluigi struct group *grp = getgrgid(cmd32->d[0]); 121798943Sluigi 121898943Sluigi if (grp) 121998943Sluigi printf(" gid %s", grp->gr_name); 122098943Sluigi else 122198943Sluigi printf(" gid %u", cmd32->d[0]); 122298943Sluigi } 122398943Sluigi break; 122498943Sluigi 1225112250Scjc case O_VERREVPATH: 1226112250Scjc printf(" verrevpath"); 1227112250Scjc break; 1228116919Sluigi 122998943Sluigi case O_KEEP_STATE: 123098943Sluigi printf(" keep-state"); 123198943Sluigi break; 123298943Sluigi 123398943Sluigi case O_LIMIT: 123498943Sluigi { 123598943Sluigi struct _s_x *p = limit_masks; 123698943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 123798943Sluigi u_int8_t x = c->limit_mask; 123898943Sluigi char *comma = " "; 123998943Sluigi 124098943Sluigi printf(" limit"); 1241106505Smaxim for ( ; p->x != 0 ; p++) 124299909Sluigi if ((x & p->x) == p->x) { 124398943Sluigi x &= ~p->x; 124498943Sluigi printf("%s%s", comma, p->s); 124598943Sluigi comma = ","; 124698943Sluigi } 124798943Sluigi printf(" %d", c->conn_limit); 124898943Sluigi } 124998943Sluigi break; 125098943Sluigi 125198943Sluigi default: 125298943Sluigi printf(" [opcode %d len %d]", 125398943Sluigi cmd->opcode, cmd->len); 125498943Sluigi } 125598943Sluigi } 125698943Sluigi if (cmd->len & F_OR) { 125798943Sluigi printf(" or"); 125898943Sluigi or_block = 1; 125998943Sluigi } else if (or_block) { 126098943Sluigi printf(" }"); 126198943Sluigi or_block = 0; 126298943Sluigi } 126398943Sluigi } 1264102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 126598943Sluigi 126698943Sluigi printf("\n"); 126798943Sluigi} 126898943Sluigi 126998943Sluigistatic void 1270112189Smaximshow_dyn_ipfw(ipfw_dyn_rule *d, int pcwidth, int bcwidth) 127198943Sluigi{ 127298943Sluigi struct protoent *pe; 127398943Sluigi struct in_addr a; 1274115793Sticso uint16_t rulenum; 127598943Sluigi 127698943Sluigi if (!do_expired) { 127798943Sluigi if (!d->expire && !(d->dyn_type == O_LIMIT_PARENT)) 127898943Sluigi return; 127998943Sluigi } 1280115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 1281115793Sticso printf("%05d %*llu %*llu (%ds)", rulenum, pcwidth, 1282115793Sticso align_uint64(&d->pcnt), bcwidth, 1283115793Sticso align_uint64(&d->bcnt), d->expire); 128498943Sluigi switch (d->dyn_type) { 128598943Sluigi case O_LIMIT_PARENT: 128698943Sluigi printf(" PARENT %d", d->count); 128798943Sluigi break; 128898943Sluigi case O_LIMIT: 128998943Sluigi printf(" LIMIT"); 129098943Sluigi break; 129198943Sluigi case O_KEEP_STATE: /* bidir, no mask */ 1292106505Smaxim printf(" STATE"); 129398943Sluigi break; 129498943Sluigi } 129598943Sluigi 129698943Sluigi if ((pe = getprotobynumber(d->id.proto)) != NULL) 129798943Sluigi printf(" %s", pe->p_name); 129898943Sluigi else 129998943Sluigi printf(" proto %u", d->id.proto); 130098943Sluigi 130198943Sluigi a.s_addr = htonl(d->id.src_ip); 130298943Sluigi printf(" %s %d", inet_ntoa(a), d->id.src_port); 130398943Sluigi 130498943Sluigi a.s_addr = htonl(d->id.dst_ip); 130598943Sluigi printf(" <-> %s %d", inet_ntoa(a), d->id.dst_port); 130698943Sluigi printf("\n"); 130798943Sluigi} 130898943Sluigi 130998943Sluigiint 131098943Sluigisort_q(const void *pa, const void *pb) 131198943Sluigi{ 131298943Sluigi int rev = (do_sort < 0); 131398943Sluigi int field = rev ? -do_sort : do_sort; 131498943Sluigi long long res = 0; 131598943Sluigi const struct dn_flow_queue *a = pa; 131698943Sluigi const struct dn_flow_queue *b = pb; 131798943Sluigi 131898943Sluigi switch (field) { 131998943Sluigi case 1: /* pkts */ 132098943Sluigi res = a->len - b->len; 132198943Sluigi break; 132298943Sluigi case 2: /* bytes */ 132398943Sluigi res = a->len_bytes - b->len_bytes; 132498943Sluigi break; 132598943Sluigi 132698943Sluigi case 3: /* tot pkts */ 132798943Sluigi res = a->tot_pkts - b->tot_pkts; 132898943Sluigi break; 132998943Sluigi 133098943Sluigi case 4: /* tot bytes */ 133198943Sluigi res = a->tot_bytes - b->tot_bytes; 133298943Sluigi break; 133398943Sluigi } 133498943Sluigi if (res < 0) 133598943Sluigi res = -1; 133698943Sluigi if (res > 0) 133798943Sluigi res = 1; 133898943Sluigi return (int)(rev ? res : -res); 133998943Sluigi} 134098943Sluigi 134198943Sluigistatic void 134298943Sluigilist_queues(struct dn_flow_set *fs, struct dn_flow_queue *q) 134398943Sluigi{ 134498943Sluigi int l; 134598943Sluigi 134698943Sluigi printf(" mask: 0x%02x 0x%08x/0x%04x -> 0x%08x/0x%04x\n", 134798943Sluigi fs->flow_mask.proto, 134898943Sluigi fs->flow_mask.src_ip, fs->flow_mask.src_port, 134998943Sluigi fs->flow_mask.dst_ip, fs->flow_mask.dst_port); 135098943Sluigi if (fs->rq_elements == 0) 135198943Sluigi return; 135298943Sluigi 135398943Sluigi printf("BKT Prot ___Source IP/port____ " 135498943Sluigi "____Dest. IP/port____ Tot_pkt/bytes Pkt/Byte Drp\n"); 135598943Sluigi if (do_sort != 0) 135698943Sluigi heapsort(q, fs->rq_elements, sizeof *q, sort_q); 135798943Sluigi for (l = 0; l < fs->rq_elements; l++) { 135898943Sluigi struct in_addr ina; 135998943Sluigi struct protoent *pe; 136098943Sluigi 136198943Sluigi ina.s_addr = htonl(q[l].id.src_ip); 136298943Sluigi printf("%3d ", q[l].hash_slot); 136398943Sluigi pe = getprotobynumber(q[l].id.proto); 136498943Sluigi if (pe) 136598943Sluigi printf("%-4s ", pe->p_name); 136698943Sluigi else 136798943Sluigi printf("%4u ", q[l].id.proto); 136898943Sluigi printf("%15s/%-5d ", 136998943Sluigi inet_ntoa(ina), q[l].id.src_port); 137098943Sluigi ina.s_addr = htonl(q[l].id.dst_ip); 137198943Sluigi printf("%15s/%-5d ", 137298943Sluigi inet_ntoa(ina), q[l].id.dst_port); 137398943Sluigi printf("%4qu %8qu %2u %4u %3u\n", 137498943Sluigi q[l].tot_pkts, q[l].tot_bytes, 137598943Sluigi q[l].len, q[l].len_bytes, q[l].drops); 137698943Sluigi if (verbose) 137798943Sluigi printf(" S %20qd F %20qd\n", 137898943Sluigi q[l].S, q[l].F); 137998943Sluigi } 138098943Sluigi} 138198943Sluigi 138298943Sluigistatic void 138398943Sluigiprint_flowset_parms(struct dn_flow_set *fs, char *prefix) 138498943Sluigi{ 138598943Sluigi int l; 138698943Sluigi char qs[30]; 138798943Sluigi char plr[30]; 138898943Sluigi char red[90]; /* Display RED parameters */ 138998943Sluigi 139098943Sluigi l = fs->qsize; 139198943Sluigi if (fs->flags_fs & DN_QSIZE_IS_BYTES) { 139298943Sluigi if (l >= 8192) 139398943Sluigi sprintf(qs, "%d KB", l / 1024); 139498943Sluigi else 139598943Sluigi sprintf(qs, "%d B", l); 139698943Sluigi } else 139798943Sluigi sprintf(qs, "%3d sl.", l); 139898943Sluigi if (fs->plr) 139998943Sluigi sprintf(plr, "plr %f", 1.0 * fs->plr / (double)(0x7fffffff)); 140098943Sluigi else 140198943Sluigi plr[0] = '\0'; 140298943Sluigi if (fs->flags_fs & DN_IS_RED) /* RED parameters */ 140398943Sluigi sprintf(red, 140498943Sluigi "\n\t %cRED w_q %f min_th %d max_th %d max_p %f", 140598943Sluigi (fs->flags_fs & DN_IS_GENTLE_RED) ? 'G' : ' ', 140698943Sluigi 1.0 * fs->w_q / (double)(1 << SCALE_RED), 140798943Sluigi SCALE_VAL(fs->min_th), 140898943Sluigi SCALE_VAL(fs->max_th), 140998943Sluigi 1.0 * fs->max_p / (double)(1 << SCALE_RED)); 141098943Sluigi else 141198943Sluigi sprintf(red, "droptail"); 141298943Sluigi 141398943Sluigi printf("%s %s%s %d queues (%d buckets) %s\n", 141498943Sluigi prefix, qs, plr, fs->rq_elements, fs->rq_size, red); 141598943Sluigi} 141698943Sluigi 141798943Sluigistatic void 141898943Sluigilist_pipes(void *data, int nbytes, int ac, char *av[]) 141998943Sluigi{ 142098943Sluigi u_long rulenum; 142198943Sluigi void *next = data; 142298943Sluigi struct dn_pipe *p = (struct dn_pipe *) data; 142398943Sluigi struct dn_flow_set *fs; 142498943Sluigi struct dn_flow_queue *q; 142598943Sluigi int l; 142698943Sluigi 142798943Sluigi if (ac > 0) 142898943Sluigi rulenum = strtoul(*av++, NULL, 10); 142998943Sluigi else 143098943Sluigi rulenum = 0; 143198943Sluigi for (; nbytes >= sizeof *p; p = (struct dn_pipe *)next) { 143298943Sluigi double b = p->bandwidth; 143398943Sluigi char buf[30]; 143498943Sluigi char prefix[80]; 143598943Sluigi 143698943Sluigi if (p->next != (struct dn_pipe *)DN_IS_PIPE) 143798943Sluigi break; /* done with pipes, now queues */ 143898943Sluigi 143998943Sluigi /* 144098943Sluigi * compute length, as pipe have variable size 144198943Sluigi */ 144298943Sluigi l = sizeof(*p) + p->fs.rq_elements * sizeof(*q); 144398943Sluigi next = (void *)p + l; 144498943Sluigi nbytes -= l; 144598943Sluigi 144698943Sluigi if (rulenum != 0 && rulenum != p->pipe_nr) 144798943Sluigi continue; 144898943Sluigi 144998943Sluigi /* 145098943Sluigi * Print rate (or clocking interface) 145198943Sluigi */ 145298943Sluigi if (p->if_name[0] != '\0') 145398943Sluigi sprintf(buf, "%s", p->if_name); 145498943Sluigi else if (b == 0) 145598943Sluigi sprintf(buf, "unlimited"); 145698943Sluigi else if (b >= 1000000) 145798943Sluigi sprintf(buf, "%7.3f Mbit/s", b/1000000); 145898943Sluigi else if (b >= 1000) 145998943Sluigi sprintf(buf, "%7.3f Kbit/s", b/1000); 146098943Sluigi else 146198943Sluigi sprintf(buf, "%7.3f bit/s ", b); 146298943Sluigi 146398943Sluigi sprintf(prefix, "%05d: %s %4d ms ", 146498943Sluigi p->pipe_nr, buf, p->delay); 146598943Sluigi print_flowset_parms(&(p->fs), prefix); 146698943Sluigi if (verbose) 146798943Sluigi printf(" V %20qd\n", p->V >> MY_M); 1468106505Smaxim 146998943Sluigi q = (struct dn_flow_queue *)(p+1); 147098943Sluigi list_queues(&(p->fs), q); 147198943Sluigi } 147298943Sluigi for (fs = next; nbytes >= sizeof *fs; fs = next) { 147398943Sluigi char prefix[80]; 147498943Sluigi 147598943Sluigi if (fs->next != (struct dn_flow_set *)DN_IS_QUEUE) 147698943Sluigi break; 147798943Sluigi l = sizeof(*fs) + fs->rq_elements * sizeof(*q); 147898943Sluigi next = (void *)fs + l; 147998943Sluigi nbytes -= l; 148098943Sluigi q = (struct dn_flow_queue *)(fs+1); 148198943Sluigi sprintf(prefix, "q%05d: weight %d pipe %d ", 148298943Sluigi fs->fs_nr, fs->weight, fs->parent_nr); 148398943Sluigi print_flowset_parms(fs, prefix); 148498943Sluigi list_queues(fs, q); 148598943Sluigi } 148698943Sluigi} 148798943Sluigi 1488101978Sluigi/* 1489101978Sluigi * This one handles all set-related commands 1490101978Sluigi * ipfw set { show | enable | disable } 1491101978Sluigi * ipfw set swap X Y 1492101978Sluigi * ipfw set move X to Y 1493101978Sluigi * ipfw set move rule X to Y 1494101978Sluigi */ 149598943Sluigistatic void 1496101978Sluigisets_handler(int ac, char *av[]) 1497101978Sluigi{ 1498101978Sluigi u_int32_t set_disable, masks[2]; 1499101978Sluigi int i, nbytes; 1500101978Sluigi u_int16_t rulenum; 1501101978Sluigi u_int8_t cmd, new_set; 1502101978Sluigi 1503101978Sluigi ac--; 1504101978Sluigi av++; 1505101978Sluigi 1506101978Sluigi if (!ac) 1507101978Sluigi errx(EX_USAGE, "set needs command"); 1508101978Sluigi if (!strncmp(*av, "show", strlen(*av)) ) { 1509101978Sluigi void *data; 1510101978Sluigi char *msg; 1511101978Sluigi 1512101978Sluigi nbytes = sizeof(struct ip_fw); 1513101978Sluigi if ((data = malloc(nbytes)) == NULL) 1514101978Sluigi err(EX_OSERR, "malloc"); 1515101978Sluigi if (getsockopt(s, IPPROTO_IP, IP_FW_GET, data, &nbytes) < 0) 1516101978Sluigi err(EX_OSERR, "getsockopt(IP_FW_GET)"); 1517115793Sticso bcopy(&((struct ip_fw *)data)->next_rule, 1518115793Sticso &set_disable, sizeof(set_disable)); 1519101978Sluigi 1520101978Sluigi for (i = 0, msg = "disable" ; i < 31; i++) 1521101978Sluigi if ( (set_disable & (1<<i))) { 1522101978Sluigi printf("%s %d", msg, i); 1523101978Sluigi msg = ""; 1524101978Sluigi } 1525101978Sluigi msg = (set_disable) ? " enable" : "enable"; 1526101978Sluigi for (i = 0; i < 31; i++) 1527101978Sluigi if ( !(set_disable & (1<<i))) { 1528101978Sluigi printf("%s %d", msg, i); 1529101978Sluigi msg = ""; 1530101978Sluigi } 1531101978Sluigi printf("\n"); 1532101978Sluigi } else if (!strncmp(*av, "swap", strlen(*av))) { 1533101978Sluigi ac--; av++; 1534101978Sluigi if (ac != 2) 1535101978Sluigi errx(EX_USAGE, "set swap needs 2 set numbers\n"); 1536101978Sluigi rulenum = atoi(av[0]); 1537101978Sluigi new_set = atoi(av[1]); 1538101978Sluigi if (!isdigit(*(av[0])) || rulenum > 30) 1539101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[0]); 1540101978Sluigi if (!isdigit(*(av[1])) || new_set > 30) 1541101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[1]); 1542101978Sluigi masks[0] = (4 << 24) | (new_set << 16) | (rulenum); 1543101978Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, 1544101978Sluigi masks, sizeof(u_int32_t)); 1545101978Sluigi } else if (!strncmp(*av, "move", strlen(*av))) { 1546101978Sluigi ac--; av++; 1547101978Sluigi if (ac && !strncmp(*av, "rule", strlen(*av))) { 1548101978Sluigi cmd = 2; 1549101978Sluigi ac--; av++; 1550101978Sluigi } else 1551101978Sluigi cmd = 3; 1552101978Sluigi if (ac != 3 || strncmp(av[1], "to", strlen(*av))) 1553101978Sluigi errx(EX_USAGE, "syntax: set move [rule] X to Y\n"); 1554101978Sluigi rulenum = atoi(av[0]); 1555101978Sluigi new_set = atoi(av[2]); 1556101978Sluigi if (!isdigit(*(av[0])) || (cmd == 3 && rulenum > 30) || 1557101978Sluigi (cmd == 2 && rulenum == 65535) ) 1558101978Sluigi errx(EX_DATAERR, "invalid source number %s\n", av[0]); 1559101978Sluigi if (!isdigit(*(av[2])) || new_set > 30) 1560101978Sluigi errx(EX_DATAERR, "invalid dest. set %s\n", av[1]); 1561101978Sluigi masks[0] = (cmd << 24) | (new_set << 16) | (rulenum); 1562101978Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, 1563101978Sluigi masks, sizeof(u_int32_t)); 1564101978Sluigi } else if (!strncmp(*av, "disable", strlen(*av)) || 1565101978Sluigi !strncmp(*av, "enable", strlen(*av)) ) { 1566101978Sluigi int which = !strncmp(*av, "enable", strlen(*av)) ? 1 : 0; 1567101978Sluigi 1568101978Sluigi ac--; av++; 1569101978Sluigi masks[0] = masks[1] = 0; 1570101978Sluigi 1571101978Sluigi while (ac) { 1572101978Sluigi if (isdigit(**av)) { 1573101978Sluigi i = atoi(*av); 1574101978Sluigi if (i < 0 || i > 30) 1575101978Sluigi errx(EX_DATAERR, 1576101978Sluigi "invalid set number %d\n", i); 1577101978Sluigi masks[which] |= (1<<i); 1578101978Sluigi } else if (!strncmp(*av, "disable", strlen(*av))) 1579101978Sluigi which = 0; 1580101978Sluigi else if (!strncmp(*av, "enable", strlen(*av))) 1581101978Sluigi which = 1; 1582101978Sluigi else 1583101978Sluigi errx(EX_DATAERR, 1584101978Sluigi "invalid set command %s\n", *av); 1585101978Sluigi av++; ac--; 1586101978Sluigi } 1587101978Sluigi if ( (masks[0] & masks[1]) != 0 ) 1588101978Sluigi errx(EX_DATAERR, 1589101978Sluigi "cannot enable and disable the same set\n"); 1590101978Sluigi 1591101978Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, masks, sizeof(masks)); 1592101978Sluigi if (i) 1593101978Sluigi warn("set enable/disable: setsockopt(IP_FW_DEL)"); 1594101978Sluigi } else 1595101978Sluigi errx(EX_USAGE, "invalid set command %s\n", *av); 1596101978Sluigi} 1597101978Sluigi 1598101978Sluigistatic void 1599109126Sdillonsysctl_handler(int ac, char *av[], int which) 1600109126Sdillon{ 1601109126Sdillon ac--; 1602109126Sdillon av++; 1603109126Sdillon 1604109126Sdillon if (*av == NULL) { 1605109126Sdillon warnx("missing keyword to enable/disable\n"); 1606109126Sdillon } else if (strncmp(*av, "firewall", strlen(*av)) == 0) { 1607116770Sluigi sysctlbyname("net.inet.ip.fw.enable", NULL, 0, 1608116770Sluigi &which, sizeof(which)); 1609109126Sdillon } else if (strncmp(*av, "one_pass", strlen(*av)) == 0) { 1610116770Sluigi sysctlbyname("net.inet.ip.fw.one_pass", NULL, 0, 1611116770Sluigi &which, sizeof(which)); 1612109126Sdillon } else if (strncmp(*av, "debug", strlen(*av)) == 0) { 1613116770Sluigi sysctlbyname("net.inet.ip.fw.debug", NULL, 0, 1614116770Sluigi &which, sizeof(which)); 1615109126Sdillon } else if (strncmp(*av, "verbose", strlen(*av)) == 0) { 1616116770Sluigi sysctlbyname("net.inet.ip.fw.verbose", NULL, 0, 1617116770Sluigi &which, sizeof(which)); 1618109126Sdillon } else if (strncmp(*av, "dyn_keepalive", strlen(*av)) == 0) { 1619116770Sluigi sysctlbyname("net.inet.ip.fw.dyn_keepalive", NULL, 0, 1620116770Sluigi &which, sizeof(which)); 1621109126Sdillon } else { 1622109126Sdillon warnx("unrecognize enable/disable keyword: %s\n", *av); 1623109126Sdillon } 1624109126Sdillon} 1625109126Sdillon 1626109126Sdillonstatic void 162798943Sluigilist(int ac, char *av[]) 162898943Sluigi{ 162998943Sluigi struct ip_fw *r; 163098943Sluigi ipfw_dyn_rule *dynrules, *d; 163198943Sluigi 163298943Sluigi void *lim, *data = NULL; 1633112189Smaxim int bcwidth, n, nbytes, nstat, ndyn, pcwidth, width; 163498943Sluigi int exitval = EX_OK; 163598943Sluigi int lac; 163698943Sluigi char **lav; 163798943Sluigi u_long rnum; 163898943Sluigi char *endptr; 163998943Sluigi int seen = 0; 164098943Sluigi 164198943Sluigi const int ocmd = do_pipe ? IP_DUMMYNET_GET : IP_FW_GET; 164298943Sluigi int nalloc = 1024; /* start somewhere... */ 164398943Sluigi 164498943Sluigi ac--; 164598943Sluigi av++; 164698943Sluigi 164798943Sluigi /* get rules or pipes from kernel, resizing array as necessary */ 164898943Sluigi nbytes = nalloc; 164998943Sluigi 165098943Sluigi while (nbytes >= nalloc) { 165198943Sluigi nalloc = nalloc * 2 + 200; 165298943Sluigi nbytes = nalloc; 165398943Sluigi if ((data = realloc(data, nbytes)) == NULL) 165498943Sluigi err(EX_OSERR, "realloc"); 165598943Sluigi if (getsockopt(s, IPPROTO_IP, ocmd, data, &nbytes) < 0) 165698943Sluigi err(EX_OSERR, "getsockopt(IP_%s_GET)", 165798943Sluigi do_pipe ? "DUMMYNET" : "FW"); 165898943Sluigi } 165998943Sluigi 166098943Sluigi if (do_pipe) { 166198943Sluigi list_pipes(data, nbytes, ac, av); 166298943Sluigi goto done; 166398943Sluigi } 166498943Sluigi 166598943Sluigi /* 166698943Sluigi * Count static rules. They have variable size so we 166798943Sluigi * need to scan the list to count them. 166898943Sluigi */ 166998943Sluigi for (nstat = 1, r = data, lim = data + nbytes; 167098943Sluigi r->rulenum < 65535 && (void *)r < lim; 167198943Sluigi ++nstat, r = (void *)r + RULESIZE(r) ) 167298943Sluigi ; /* nothing */ 167398943Sluigi 167498943Sluigi /* 167598943Sluigi * Count dynamic rules. This is easier as they have 167698943Sluigi * fixed size. 167798943Sluigi */ 167898943Sluigi r = (void *)r + RULESIZE(r); 167998943Sluigi dynrules = (ipfw_dyn_rule *)r ; 168098943Sluigi n = (void *)r - data; 168198943Sluigi ndyn = (nbytes - n) / sizeof *dynrules; 168298943Sluigi 1683112189Smaxim /* if showing stats, figure out column widths ahead of time */ 1684112189Smaxim bcwidth = pcwidth = 0; 1685112189Smaxim if (do_acct) { 1686112189Smaxim for (n = 0, r = data; n < nstat; 1687112189Smaxim n++, r = (void *)r + RULESIZE(r)) { 1688112189Smaxim /* packet counter */ 1689115793Sticso width = snprintf(NULL, 0, "%llu", 1690115793Sticso align_uint64(&r->pcnt)); 1691112189Smaxim if (width > pcwidth) 1692112189Smaxim pcwidth = width; 1693112189Smaxim 1694112189Smaxim /* byte counter */ 1695115793Sticso width = snprintf(NULL, 0, "%llu", 1696115793Sticso align_uint64(&r->bcnt)); 1697112189Smaxim if (width > bcwidth) 1698112189Smaxim bcwidth = width; 1699112189Smaxim } 1700112189Smaxim } 1701112189Smaxim if (do_dynamic && ndyn) { 1702112189Smaxim for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1703115793Sticso width = snprintf(NULL, 0, "%llu", 1704115793Sticso align_uint64(&d->pcnt)); 1705112189Smaxim if (width > pcwidth) 1706112189Smaxim pcwidth = width; 1707112189Smaxim 1708115793Sticso width = snprintf(NULL, 0, "%llu", 1709115793Sticso align_uint64(&d->bcnt)); 1710112189Smaxim if (width > bcwidth) 1711112189Smaxim bcwidth = width; 1712112189Smaxim } 1713112189Smaxim } 171498943Sluigi /* if no rule numbers were specified, list all rules */ 171598943Sluigi if (ac == 0) { 171698943Sluigi for (n = 0, r = data; n < nstat; 171798943Sluigi n++, r = (void *)r + RULESIZE(r) ) 1718112189Smaxim show_ipfw(r, pcwidth, bcwidth); 171998943Sluigi 172098943Sluigi if (do_dynamic && ndyn) { 172198943Sluigi printf("## Dynamic rules (%d):\n", ndyn); 172298943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) 1723112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 172498943Sluigi } 172598943Sluigi goto done; 172698943Sluigi } 172798943Sluigi 172898943Sluigi /* display specific rules requested on command line */ 172998943Sluigi 173098943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 173198943Sluigi /* convert command line rule # */ 173298943Sluigi rnum = strtoul(*lav++, &endptr, 10); 173398943Sluigi if (*endptr) { 173498943Sluigi exitval = EX_USAGE; 173598943Sluigi warnx("invalid rule number: %s", *(lav - 1)); 173698943Sluigi continue; 173798943Sluigi } 173898943Sluigi for (n = seen = 0, r = data; n < nstat; 173998943Sluigi n++, r = (void *)r + RULESIZE(r) ) { 174098943Sluigi if (r->rulenum > rnum) 174198943Sluigi break; 174298943Sluigi if (r->rulenum == rnum) { 1743112189Smaxim show_ipfw(r, pcwidth, bcwidth); 174498943Sluigi seen = 1; 174598943Sluigi } 174698943Sluigi } 174798943Sluigi if (!seen) { 174898943Sluigi /* give precedence to other error(s) */ 174998943Sluigi if (exitval == EX_OK) 175098943Sluigi exitval = EX_UNAVAILABLE; 175198943Sluigi warnx("rule %lu does not exist", rnum); 175298943Sluigi } 175398943Sluigi } 175498943Sluigi 175598943Sluigi if (do_dynamic && ndyn) { 175698943Sluigi printf("## Dynamic rules:\n"); 175798943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 175898943Sluigi rnum = strtoul(*lav++, &endptr, 10); 175998943Sluigi if (*endptr) 176098943Sluigi /* already warned */ 176198943Sluigi continue; 176298943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1763115793Sticso uint16_t rulenum; 1764115793Sticso 1765115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 1766115793Sticso if (rulenum > rnum) 176798943Sluigi break; 1768115793Sticso if (rulenum == rnum) 1769112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 177098943Sluigi } 177198943Sluigi } 177298943Sluigi } 177398943Sluigi 177498943Sluigi ac = 0; 177598943Sluigi 177698943Sluigidone: 177798943Sluigi free(data); 177898943Sluigi 177998943Sluigi if (exitval != EX_OK) 178098943Sluigi exit(exitval); 178198943Sluigi} 178298943Sluigi 178398943Sluigistatic void 178498943Sluigishow_usage(void) 178598943Sluigi{ 178698943Sluigi fprintf(stderr, "usage: ipfw [options]\n" 178798943Sluigi" add [number] rule\n" 178898943Sluigi" pipe number config [pipeconfig]\n" 178998943Sluigi" queue number config [queueconfig]\n" 179098943Sluigi" [pipe] flush\n" 179198943Sluigi" [pipe] delete number ...\n" 179298943Sluigi" [pipe] {list|show} [number ...]\n" 179398943Sluigi" {zero|resetlog} [number ...]\n" 179498943Sluigi"do \"ipfw -h\" or see ipfw manpage for details\n" 179598943Sluigi); 179698943Sluigi 179798943Sluigi exit(EX_USAGE); 179898943Sluigi} 179998943Sluigi 180098943Sluigistatic void 180198943Sluigihelp(void) 180298943Sluigi{ 1803106505Smaxim 180498943Sluigi fprintf(stderr, "ipfw syntax summary:\n" 180598943Sluigi"ipfw add [N] [prob {0..1}] ACTION [log [logamount N]] ADDR OPTIONS\n" 180698943Sluigi"ipfw {pipe|queue} N config BODY\n" 180798943Sluigi"ipfw [pipe] {zero|delete|show} [N{,N}]\n" 180898943Sluigi"\n" 180998943Sluigi"RULE: [1..] [PROB] BODY\n" 181098943Sluigi"RULENUM: INTEGER(1..65534)\n" 181198943Sluigi"PROB: prob REAL(0..1)\n" 181298943Sluigi"BODY: check-state [LOG] (no body) |\n" 181398943Sluigi" ACTION [LOG] MATCH_ADDR [OPTION_LIST]\n" 181498943Sluigi"ACTION: check-state | allow | count | deny | reject | skipto N |\n" 181598943Sluigi" {divert|tee} PORT | forward ADDR | pipe N | queue N\n" 181698943Sluigi"ADDR: [ MAC dst src ether_type ] \n" 181798943Sluigi" [ from IPLIST [ PORT ] to IPLIST [ PORTLIST ] ]\n" 181898943Sluigi"IPLIST: IPADDR | ( IPADDR or ... or IPADDR )\n" 181998943Sluigi"IPADDR: [not] { any | me | ip | ip/bits | ip:mask | ip/bits{x,y,z} }\n" 182098943Sluigi"OPTION_LIST: OPTION [,OPTION_LIST]\n" 182198943Sluigi); 182298943Sluigiexit(0); 182398943Sluigi} 182498943Sluigi 182598943Sluigi 182698943Sluigistatic int 182798943Sluigilookup_host (char *host, struct in_addr *ipaddr) 182898943Sluigi{ 182998943Sluigi struct hostent *he; 183098943Sluigi 183198943Sluigi if (!inet_aton(host, ipaddr)) { 183298943Sluigi if ((he = gethostbyname(host)) == NULL) 183398943Sluigi return(-1); 183498943Sluigi *ipaddr = *(struct in_addr *)he->h_addr_list[0]; 183598943Sluigi } 183698943Sluigi return(0); 183798943Sluigi} 183898943Sluigi 183998943Sluigi/* 184098943Sluigi * fills the addr and mask fields in the instruction as appropriate from av. 184198943Sluigi * Update length as appropriate. 184298943Sluigi * The following formats are allowed: 184398943Sluigi * any matches any IP. Actually returns an empty instruction. 184498943Sluigi * me returns O_IP_*_ME 184598943Sluigi * 1.2.3.4 single IP address 184698943Sluigi * 1.2.3.4:5.6.7.8 address:mask 184798943Sluigi * 1.2.3.4/24 address/mask 184898943Sluigi * 1.2.3.4/26{1,6,5,4,23} set of addresses in a subnet 184998943Sluigi */ 185098943Sluigistatic void 185198943Sluigifill_ip(ipfw_insn_ip *cmd, char *av) 185298943Sluigi{ 185398943Sluigi char *p = 0, md = 0; 185498943Sluigi u_int32_t i; 185598943Sluigi 185698943Sluigi cmd->o.len &= ~F_LEN_MASK; /* zero len */ 185798943Sluigi 185898943Sluigi if (!strncmp(av, "any", strlen(av))) 185998943Sluigi return; 186098943Sluigi 186198943Sluigi if (!strncmp(av, "me", strlen(av))) { 186298943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn); 186398943Sluigi return; 186498943Sluigi } 186598943Sluigi 186698943Sluigi p = strchr(av, '/'); 186798943Sluigi if (!p) 186898943Sluigi p = strchr(av, ':'); 186998943Sluigi if (p) { 187098943Sluigi md = *p; 187198943Sluigi *p++ = '\0'; 187298943Sluigi } 187398943Sluigi 187498943Sluigi if (lookup_host(av, &cmd->addr) != 0) 187598943Sluigi errx(EX_NOHOST, "hostname ``%s'' unknown", av); 187698943Sluigi switch (md) { 187798943Sluigi case ':': 187898943Sluigi if (!inet_aton(p, &cmd->mask)) 187998943Sluigi errx(EX_DATAERR, "bad netmask ``%s''", p); 188098943Sluigi break; 188198943Sluigi case '/': 188298943Sluigi i = atoi(p); 188398943Sluigi if (i == 0) 188498943Sluigi cmd->mask.s_addr = htonl(0); 188598943Sluigi else if (i > 32) 188698943Sluigi errx(EX_DATAERR, "bad width ``%s''", p); 188798943Sluigi else 188898943Sluigi cmd->mask.s_addr = htonl(~0 << (32 - i)); 188998943Sluigi break; 189098943Sluigi default: 189198943Sluigi cmd->mask.s_addr = htonl(~0); 189298943Sluigi break; 189398943Sluigi } 189498943Sluigi cmd->addr.s_addr &= cmd->mask.s_addr; 189598943Sluigi /* 189698943Sluigi * now look if we have a set of addresses. They are stored as follows: 189798943Sluigi * arg1 is the set size (powers of 2, 2..256) 189898943Sluigi * addr is the base address IN HOST FORMAT 189998943Sluigi * mask.. is an array of u_int32_t with bits set. 190098943Sluigi */ 190198943Sluigi if (p) 190298943Sluigi p = strchr(p, '{'); 190398943Sluigi if (p) { /* fetch addresses */ 190498943Sluigi u_int32_t *d; 190598943Sluigi int low, high; 190698943Sluigi int i = contigmask((u_char *)&(cmd->mask), 32); 190798943Sluigi 190898943Sluigi if (i < 24 || i > 31) { 190998943Sluigi fprintf(stderr, "invalid set with mask %d\n", 191098943Sluigi i); 191198943Sluigi exit(0); 191298943Sluigi } 191398943Sluigi cmd->o.arg1 = 1<<(32-i); 191498943Sluigi cmd->addr.s_addr = ntohl(cmd->addr.s_addr); 191598943Sluigi d = (u_int32_t *)&cmd->mask; 191698943Sluigi cmd->o.opcode = O_IP_DST_SET; /* default */ 191798943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32) + (cmd->o.arg1+31)/32; 1918101117Sluigi for (i = 0; i < (cmd->o.arg1+31)/32 ; i++) 191998943Sluigi d[i] = 0; /* clear masks */ 192098943Sluigi 192198943Sluigi av = p+1; 192298943Sluigi low = cmd->addr.s_addr & 0xff; 192398943Sluigi high = low + cmd->o.arg1 - 1; 1924116716Sluigi i = -1; /* previous value in a range */ 192598943Sluigi while (isdigit(*av)) { 192698943Sluigi char *s; 192798943Sluigi u_int16_t a = strtol(av, &s, 0); 192898943Sluigi 192998943Sluigi if (s == av) /* no parameter */ 193098943Sluigi break; 193198943Sluigi if (a < low || a > high) { 193298943Sluigi fprintf(stderr, "addr %d out of range [%d-%d]\n", 193398943Sluigi a, low, high); 193498943Sluigi exit(0); 193598943Sluigi } 193698943Sluigi a -= low; 1937116716Sluigi if (i == -1) /* no previous in range */ 1938116716Sluigi i = a; 1939116716Sluigi else { /* check that range is valid */ 1940116716Sluigi if (i > a) 1941116716Sluigi errx(EX_DATAERR, "invalid range %d-%d", 1942116716Sluigi i+low, a+low); 1943116716Sluigi if (*s == '-') 1944116716Sluigi errx(EX_DATAERR, "double '-' in range"); 1945116716Sluigi } 1946116716Sluigi for (; i <= a; i++) 1947116716Sluigi d[i/32] |= 1<<(i & 31); 1948116716Sluigi i = -1; 1949116716Sluigi if (*s == '-') 1950116716Sluigi i = a; 1951116716Sluigi else if (*s != ',') 1952116716Sluigi break; 195398943Sluigi av = s+1; 195498943Sluigi } 195598943Sluigi return; 195698943Sluigi } 195798943Sluigi 195898943Sluigi if (cmd->mask.s_addr == 0) { /* any */ 195998943Sluigi if (cmd->o.len & F_NOT) 196098943Sluigi errx(EX_DATAERR, "not any never matches"); 196198943Sluigi else /* useless, nuke it */ 196298943Sluigi return; 196398943Sluigi } else if (cmd->mask.s_addr == IP_MASK_ALL) /* one IP */ 196498943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 196598943Sluigi else /* addr/mask */ 196698943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_ip); 196798943Sluigi} 196898943Sluigi 196998943Sluigi 197098943Sluigi/* 197198943Sluigi * helper function to process a set of flags and set bits in the 197298943Sluigi * appropriate masks. 197398943Sluigi */ 197498943Sluigistatic void 197598943Sluigifill_flags(ipfw_insn *cmd, enum ipfw_opcodes opcode, 197698943Sluigi struct _s_x *flags, char *p) 197798943Sluigi{ 197898943Sluigi u_int8_t set=0, clear=0; 197998943Sluigi 198098943Sluigi while (p && *p) { 198198943Sluigi char *q; /* points to the separator */ 198298943Sluigi int val; 198398943Sluigi u_int8_t *which; /* mask we are working on */ 198498943Sluigi 198598943Sluigi if (*p == '!') { 198698943Sluigi p++; 198798943Sluigi which = &clear; 198898943Sluigi } else 198998943Sluigi which = &set; 199098943Sluigi q = strchr(p, ','); 199198943Sluigi if (q) 199298943Sluigi *q++ = '\0'; 199398943Sluigi val = match_token(flags, p); 199498943Sluigi if (val <= 0) 199598943Sluigi errx(EX_DATAERR, "invalid flag %s", p); 199698943Sluigi *which |= (u_int8_t)val; 199798943Sluigi p = q; 199898943Sluigi } 199998943Sluigi cmd->opcode = opcode; 200098943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | 1; 200198943Sluigi cmd->arg1 = (set & 0xff) | ( (clear & 0xff) << 8); 200298943Sluigi} 200398943Sluigi 200498943Sluigi 200598943Sluigistatic void 200698943Sluigidelete(int ac, char *av[]) 200798943Sluigi{ 2008101978Sluigi u_int32_t rulenum; 200998943Sluigi struct dn_pipe pipe; 201098943Sluigi int i; 201198943Sluigi int exitval = EX_OK; 2012101628Sluigi int do_set = 0; 201398943Sluigi 201498943Sluigi memset(&pipe, 0, sizeof pipe); 201598943Sluigi 201698943Sluigi av++; ac--; 2017101641Sluigi if (ac > 0 && !strncmp(*av, "set", strlen(*av))) { 2018101978Sluigi do_set = 1; /* delete set */ 2019101628Sluigi ac--; av++; 2020101978Sluigi } 202198943Sluigi 202298943Sluigi /* Rule number */ 202398943Sluigi while (ac && isdigit(**av)) { 202498943Sluigi i = atoi(*av); av++; ac--; 202598943Sluigi if (do_pipe) { 202698943Sluigi if (do_pipe == 1) 202798943Sluigi pipe.pipe_nr = i; 202898943Sluigi else 202998943Sluigi pipe.fs.fs_nr = i; 203098943Sluigi i = setsockopt(s, IPPROTO_IP, IP_DUMMYNET_DEL, 203198943Sluigi &pipe, sizeof pipe); 203298943Sluigi if (i) { 203398943Sluigi exitval = 1; 203498943Sluigi warn("rule %u: setsockopt(IP_DUMMYNET_DEL)", 203598943Sluigi do_pipe == 1 ? pipe.pipe_nr : 203698943Sluigi pipe.fs.fs_nr); 203798943Sluigi } 203898943Sluigi } else { 2039101978Sluigi rulenum = (i & 0xffff) | (do_set << 24); 204098943Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, &rulenum, 204198943Sluigi sizeof rulenum); 204298943Sluigi if (i) { 204398943Sluigi exitval = EX_UNAVAILABLE; 204498943Sluigi warn("rule %u: setsockopt(IP_FW_DEL)", 204598943Sluigi rulenum); 204698943Sluigi } 204798943Sluigi } 204898943Sluigi } 204998943Sluigi if (exitval != EX_OK) 205098943Sluigi exit(exitval); 205198943Sluigi} 205298943Sluigi 205398943Sluigi 205498943Sluigi/* 205598943Sluigi * fill the interface structure. We do not check the name as we can 205698943Sluigi * create interfaces dynamically, so checking them at insert time 205798943Sluigi * makes relatively little sense. 205898943Sluigi * A '*' following the name means any unit. 205998943Sluigi */ 206098943Sluigistatic void 206198943Sluigifill_iface(ipfw_insn_if *cmd, char *arg) 206298943Sluigi{ 206398943Sluigi cmd->name[0] = '\0'; 206498943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_if); 206598943Sluigi 206698943Sluigi /* Parse the interface or address */ 206798943Sluigi if (!strcmp(arg, "any")) 206898943Sluigi cmd->o.len = 0; /* effectively ignore this command */ 206998943Sluigi else if (!isdigit(*arg)) { 207098943Sluigi char *q; 207198943Sluigi 207298943Sluigi strncpy(cmd->name, arg, sizeof(cmd->name)); 207398943Sluigi cmd->name[sizeof(cmd->name) - 1] = '\0'; 207498943Sluigi /* find first digit or wildcard */ 207598943Sluigi for (q = cmd->name; *q && !isdigit(*q) && *q != '*'; q++) 207698943Sluigi continue; 207798943Sluigi cmd->p.unit = (*q == '*') ? -1 : atoi(q); 207898943Sluigi *q = '\0'; 207998943Sluigi } else if (!inet_aton(arg, &cmd->p.ip)) 208098943Sluigi errx(EX_DATAERR, "bad ip address ``%s''", arg); 208198943Sluigi} 208298943Sluigi 208398943Sluigi/* 208498943Sluigi * the following macro returns an error message if we run out of 208598943Sluigi * arguments. 208698943Sluigi */ 208798943Sluigi#define NEED1(msg) {if (!ac) errx(EX_USAGE, msg);} 208898943Sluigi 208998943Sluigistatic void 209098943Sluigiconfig_pipe(int ac, char **av) 209198943Sluigi{ 209298943Sluigi struct dn_pipe pipe; 209398943Sluigi int i; 209498943Sluigi char *end; 209598943Sluigi u_int32_t a; 209698943Sluigi void *par = NULL; 209798943Sluigi 209898943Sluigi memset(&pipe, 0, sizeof pipe); 209998943Sluigi 210098943Sluigi av++; ac--; 210198943Sluigi /* Pipe number */ 210298943Sluigi if (ac && isdigit(**av)) { 210398943Sluigi i = atoi(*av); av++; ac--; 210498943Sluigi if (do_pipe == 1) 210598943Sluigi pipe.pipe_nr = i; 210698943Sluigi else 210798943Sluigi pipe.fs.fs_nr = i; 210898943Sluigi } 210999475Sluigi while (ac > 0) { 211098943Sluigi double d; 211198943Sluigi int tok = match_token(dummynet_params, *av); 211298943Sluigi ac--; av++; 211398943Sluigi 211498943Sluigi switch(tok) { 2115101978Sluigi case TOK_NOERROR: 2116101978Sluigi pipe.fs.flags_fs |= DN_NOERROR; 2117101978Sluigi break; 2118101978Sluigi 211998943Sluigi case TOK_PLR: 212098943Sluigi NEED1("plr needs argument 0..1\n"); 212198943Sluigi d = strtod(av[0], NULL); 212298943Sluigi if (d > 1) 212398943Sluigi d = 1; 212498943Sluigi else if (d < 0) 212598943Sluigi d = 0; 212698943Sluigi pipe.fs.plr = (int)(d*0x7fffffff); 212798943Sluigi ac--; av++; 212898943Sluigi break; 212998943Sluigi 213098943Sluigi case TOK_QUEUE: 213198943Sluigi NEED1("queue needs queue size\n"); 213298943Sluigi end = NULL; 213398943Sluigi pipe.fs.qsize = strtoul(av[0], &end, 0); 213498943Sluigi if (*end == 'K' || *end == 'k') { 213598943Sluigi pipe.fs.flags_fs |= DN_QSIZE_IS_BYTES; 213698943Sluigi pipe.fs.qsize *= 1024; 213798943Sluigi } else if (*end == 'B' || !strncmp(end, "by", 2)) { 213898943Sluigi pipe.fs.flags_fs |= DN_QSIZE_IS_BYTES; 213998943Sluigi } 214098943Sluigi ac--; av++; 214198943Sluigi break; 214298943Sluigi 214398943Sluigi case TOK_BUCKETS: 214498943Sluigi NEED1("buckets needs argument\n"); 214598943Sluigi pipe.fs.rq_size = strtoul(av[0], NULL, 0); 214698943Sluigi ac--; av++; 214798943Sluigi break; 214898943Sluigi 214998943Sluigi case TOK_MASK: 215098943Sluigi NEED1("mask needs mask specifier\n"); 215198943Sluigi /* 215298943Sluigi * per-flow queue, mask is dst_ip, dst_port, 215398943Sluigi * src_ip, src_port, proto measured in bits 215498943Sluigi */ 215598943Sluigi par = NULL; 215698943Sluigi 215798943Sluigi pipe.fs.flow_mask.dst_ip = 0; 215898943Sluigi pipe.fs.flow_mask.src_ip = 0; 215998943Sluigi pipe.fs.flow_mask.dst_port = 0; 216098943Sluigi pipe.fs.flow_mask.src_port = 0; 216198943Sluigi pipe.fs.flow_mask.proto = 0; 216298943Sluigi end = NULL; 216398943Sluigi 216498943Sluigi while (ac >= 1) { 216598943Sluigi u_int32_t *p32 = NULL; 216698943Sluigi u_int16_t *p16 = NULL; 216798943Sluigi 216898943Sluigi tok = match_token(dummynet_params, *av); 216998943Sluigi ac--; av++; 217098943Sluigi switch(tok) { 217198943Sluigi case TOK_ALL: 217298943Sluigi /* 217398943Sluigi * special case, all bits significant 217498943Sluigi */ 217598943Sluigi pipe.fs.flow_mask.dst_ip = ~0; 217698943Sluigi pipe.fs.flow_mask.src_ip = ~0; 217798943Sluigi pipe.fs.flow_mask.dst_port = ~0; 217898943Sluigi pipe.fs.flow_mask.src_port = ~0; 217998943Sluigi pipe.fs.flow_mask.proto = ~0; 218098943Sluigi pipe.fs.flags_fs |= DN_HAVE_FLOW_MASK; 218198943Sluigi goto end_mask; 218298943Sluigi 218398943Sluigi case TOK_DSTIP: 218498943Sluigi p32 = &pipe.fs.flow_mask.dst_ip; 218598943Sluigi break; 218698943Sluigi 218798943Sluigi case TOK_SRCIP: 218898943Sluigi p32 = &pipe.fs.flow_mask.src_ip; 218998943Sluigi break; 219098943Sluigi 219198943Sluigi case TOK_DSTPORT: 219298943Sluigi p16 = &pipe.fs.flow_mask.dst_port; 219398943Sluigi break; 219498943Sluigi 219598943Sluigi case TOK_SRCPORT: 219698943Sluigi p16 = &pipe.fs.flow_mask.src_port; 219798943Sluigi break; 219898943Sluigi 219998943Sluigi case TOK_PROTO: 220098943Sluigi break; 220198943Sluigi 220298943Sluigi default: 220398943Sluigi ac++; av--; /* backtrack */ 220498943Sluigi goto end_mask; 220598943Sluigi } 220698943Sluigi if (ac < 1) 220798943Sluigi errx(EX_USAGE, "mask: value missing"); 220898943Sluigi if (*av[0] == '/') { 220998943Sluigi a = strtoul(av[0]+1, &end, 0); 221098943Sluigi a = (a == 32) ? ~0 : (1 << a) - 1; 2211106505Smaxim } else 221299909Sluigi a = strtoul(av[0], &end, 0); 221398943Sluigi if (p32 != NULL) 221498943Sluigi *p32 = a; 221598943Sluigi else if (p16 != NULL) { 221698943Sluigi if (a > 65535) 221798943Sluigi errx(EX_DATAERR, 221898943Sluigi "mask: must be 16 bit"); 221998943Sluigi *p16 = (u_int16_t)a; 222098943Sluigi } else { 222198943Sluigi if (a > 255) 222298943Sluigi errx(EX_DATAERR, 222398943Sluigi "mask: must be 8 bit"); 222498943Sluigi pipe.fs.flow_mask.proto = (u_int8_t)a; 222598943Sluigi } 222698943Sluigi if (a != 0) 222798943Sluigi pipe.fs.flags_fs |= DN_HAVE_FLOW_MASK; 222898943Sluigi ac--; av++; 222998943Sluigi } /* end while, config masks */ 223098943Sluigiend_mask: 223198943Sluigi break; 223298943Sluigi 223398943Sluigi case TOK_RED: 223498943Sluigi case TOK_GRED: 223598943Sluigi NEED1("red/gred needs w_q/min_th/max_th/max_p\n"); 223698943Sluigi pipe.fs.flags_fs |= DN_IS_RED; 223798943Sluigi if (tok == TOK_GRED) 223898943Sluigi pipe.fs.flags_fs |= DN_IS_GENTLE_RED; 223998943Sluigi /* 224098943Sluigi * the format for parameters is w_q/min_th/max_th/max_p 224198943Sluigi */ 224298943Sluigi if ((end = strsep(&av[0], "/"))) { 224398943Sluigi double w_q = strtod(end, NULL); 224498943Sluigi if (w_q > 1 || w_q <= 0) 224598943Sluigi errx(EX_DATAERR, "0 < w_q <= 1"); 224698943Sluigi pipe.fs.w_q = (int) (w_q * (1 << SCALE_RED)); 224798943Sluigi } 224898943Sluigi if ((end = strsep(&av[0], "/"))) { 224998943Sluigi pipe.fs.min_th = strtoul(end, &end, 0); 225098943Sluigi if (*end == 'K' || *end == 'k') 225198943Sluigi pipe.fs.min_th *= 1024; 225298943Sluigi } 225398943Sluigi if ((end = strsep(&av[0], "/"))) { 225498943Sluigi pipe.fs.max_th = strtoul(end, &end, 0); 225598943Sluigi if (*end == 'K' || *end == 'k') 225698943Sluigi pipe.fs.max_th *= 1024; 225798943Sluigi } 225898943Sluigi if ((end = strsep(&av[0], "/"))) { 225998943Sluigi double max_p = strtod(end, NULL); 226098943Sluigi if (max_p > 1 || max_p <= 0) 226198943Sluigi errx(EX_DATAERR, "0 < max_p <= 1"); 226298943Sluigi pipe.fs.max_p = (int)(max_p * (1 << SCALE_RED)); 226398943Sluigi } 226498943Sluigi ac--; av++; 226598943Sluigi break; 226698943Sluigi 226798943Sluigi case TOK_DROPTAIL: 226898943Sluigi pipe.fs.flags_fs &= ~(DN_IS_RED|DN_IS_GENTLE_RED); 226998943Sluigi break; 2270106505Smaxim 227198943Sluigi case TOK_BW: 227298943Sluigi NEED1("bw needs bandwidth or interface\n"); 227398943Sluigi if (do_pipe != 1) 227498943Sluigi errx(EX_DATAERR, "bandwidth only valid for pipes"); 227598943Sluigi /* 227698943Sluigi * set clocking interface or bandwidth value 227798943Sluigi */ 227898943Sluigi if (av[0][0] >= 'a' && av[0][0] <= 'z') { 227998943Sluigi int l = sizeof(pipe.if_name)-1; 228098943Sluigi /* interface name */ 228198943Sluigi strncpy(pipe.if_name, av[0], l); 228298943Sluigi pipe.if_name[l] = '\0'; 228398943Sluigi pipe.bandwidth = 0; 228498943Sluigi } else { 228598943Sluigi pipe.if_name[0] = '\0'; 228698943Sluigi pipe.bandwidth = strtoul(av[0], &end, 0); 228798943Sluigi if (*end == 'K' || *end == 'k') { 228898943Sluigi end++; 228998943Sluigi pipe.bandwidth *= 1000; 229098943Sluigi } else if (*end == 'M') { 229198943Sluigi end++; 229298943Sluigi pipe.bandwidth *= 1000000; 229398943Sluigi } 229498943Sluigi if (*end == 'B' || !strncmp(end, "by", 2)) 229598943Sluigi pipe.bandwidth *= 8; 229698943Sluigi if (pipe.bandwidth < 0) 229798943Sluigi errx(EX_DATAERR, "bandwidth too large"); 229898943Sluigi } 229998943Sluigi ac--; av++; 230098943Sluigi break; 230198943Sluigi 230298943Sluigi case TOK_DELAY: 230398943Sluigi if (do_pipe != 1) 230498943Sluigi errx(EX_DATAERR, "delay only valid for pipes"); 230598943Sluigi NEED1("delay needs argument 0..10000ms\n"); 230698943Sluigi pipe.delay = strtoul(av[0], NULL, 0); 230798943Sluigi ac--; av++; 230898943Sluigi break; 230998943Sluigi 231098943Sluigi case TOK_WEIGHT: 231198943Sluigi if (do_pipe == 1) 231298943Sluigi errx(EX_DATAERR,"weight only valid for queues"); 231398943Sluigi NEED1("weight needs argument 0..100\n"); 231498943Sluigi pipe.fs.weight = strtoul(av[0], &end, 0); 231598943Sluigi ac--; av++; 231698943Sluigi break; 231798943Sluigi 231898943Sluigi case TOK_PIPE: 231998943Sluigi if (do_pipe == 1) 232098943Sluigi errx(EX_DATAERR,"pipe only valid for queues"); 232198943Sluigi NEED1("pipe needs pipe_number\n"); 232298943Sluigi pipe.fs.parent_nr = strtoul(av[0], &end, 0); 232398943Sluigi ac--; av++; 232498943Sluigi break; 232598943Sluigi 232698943Sluigi default: 232798943Sluigi errx(EX_DATAERR, "unrecognised option ``%s''", *av); 232898943Sluigi } 232998943Sluigi } 233098943Sluigi if (do_pipe == 1) { 233198943Sluigi if (pipe.pipe_nr == 0) 233298943Sluigi errx(EX_DATAERR, "pipe_nr must be > 0"); 233398943Sluigi if (pipe.delay > 10000) 233498943Sluigi errx(EX_DATAERR, "delay must be < 10000"); 233598943Sluigi } else { /* do_pipe == 2, queue */ 233698943Sluigi if (pipe.fs.parent_nr == 0) 233798943Sluigi errx(EX_DATAERR, "pipe must be > 0"); 233898943Sluigi if (pipe.fs.weight >100) 233998943Sluigi errx(EX_DATAERR, "weight must be <= 100"); 234098943Sluigi } 234198943Sluigi if (pipe.fs.flags_fs & DN_QSIZE_IS_BYTES) { 234298943Sluigi if (pipe.fs.qsize > 1024*1024) 234398943Sluigi errx(EX_DATAERR, "queue size must be < 1MB"); 234498943Sluigi } else { 234598943Sluigi if (pipe.fs.qsize > 100) 234698943Sluigi errx(EX_DATAERR, "2 <= queue size <= 100"); 234798943Sluigi } 234898943Sluigi if (pipe.fs.flags_fs & DN_IS_RED) { 234998943Sluigi size_t len; 235098943Sluigi int lookup_depth, avg_pkt_size; 235198943Sluigi double s, idle, weight, w_q; 235298943Sluigi struct clockinfo clock; 235398943Sluigi int t; 235498943Sluigi 235598943Sluigi if (pipe.fs.min_th >= pipe.fs.max_th) 235698943Sluigi errx(EX_DATAERR, "min_th %d must be < than max_th %d", 235798943Sluigi pipe.fs.min_th, pipe.fs.max_th); 235898943Sluigi if (pipe.fs.max_th == 0) 235998943Sluigi errx(EX_DATAERR, "max_th must be > 0"); 236098943Sluigi 236198943Sluigi len = sizeof(int); 236298943Sluigi if (sysctlbyname("net.inet.ip.dummynet.red_lookup_depth", 236398943Sluigi &lookup_depth, &len, NULL, 0) == -1) 236498943Sluigi 236598943Sluigi errx(1, "sysctlbyname(\"%s\")", 236698943Sluigi "net.inet.ip.dummynet.red_lookup_depth"); 236798943Sluigi if (lookup_depth == 0) 236898943Sluigi errx(EX_DATAERR, "net.inet.ip.dummynet.red_lookup_depth" 236998943Sluigi " must be greater than zero"); 237098943Sluigi 237198943Sluigi len = sizeof(int); 237298943Sluigi if (sysctlbyname("net.inet.ip.dummynet.red_avg_pkt_size", 237398943Sluigi &avg_pkt_size, &len, NULL, 0) == -1) 237498943Sluigi 237598943Sluigi errx(1, "sysctlbyname(\"%s\")", 237698943Sluigi "net.inet.ip.dummynet.red_avg_pkt_size"); 237798943Sluigi if (avg_pkt_size == 0) 237898943Sluigi errx(EX_DATAERR, 237998943Sluigi "net.inet.ip.dummynet.red_avg_pkt_size must" 238098943Sluigi " be greater than zero"); 238198943Sluigi 238298943Sluigi len = sizeof(struct clockinfo); 238398943Sluigi if (sysctlbyname("kern.clockrate", &clock, &len, NULL, 0) == -1) 238498943Sluigi errx(1, "sysctlbyname(\"%s\")", "kern.clockrate"); 238598943Sluigi 238698943Sluigi /* 238798943Sluigi * Ticks needed for sending a medium-sized packet. 238898943Sluigi * Unfortunately, when we are configuring a WF2Q+ queue, we 238998943Sluigi * do not have bandwidth information, because that is stored 239098943Sluigi * in the parent pipe, and also we have multiple queues 239198943Sluigi * competing for it. So we set s=0, which is not very 239298943Sluigi * correct. But on the other hand, why do we want RED with 239398943Sluigi * WF2Q+ ? 239498943Sluigi */ 239598943Sluigi if (pipe.bandwidth==0) /* this is a WF2Q+ queue */ 239698943Sluigi s = 0; 239798943Sluigi else 239898943Sluigi s = clock.hz * avg_pkt_size * 8 / pipe.bandwidth; 239998943Sluigi 240098943Sluigi /* 240198943Sluigi * max idle time (in ticks) before avg queue size becomes 0. 240298943Sluigi * NOTA: (3/w_q) is approx the value x so that 240398943Sluigi * (1-w_q)^x < 10^-3. 240498943Sluigi */ 240598943Sluigi w_q = ((double)pipe.fs.w_q) / (1 << SCALE_RED); 240698943Sluigi idle = s * 3. / w_q; 240798943Sluigi pipe.fs.lookup_step = (int)idle / lookup_depth; 240898943Sluigi if (!pipe.fs.lookup_step) 240998943Sluigi pipe.fs.lookup_step = 1; 241098943Sluigi weight = 1 - w_q; 241198943Sluigi for (t = pipe.fs.lookup_step; t > 0; --t) 241298943Sluigi weight *= weight; 241398943Sluigi pipe.fs.lookup_weight = (int)(weight * (1 << SCALE_RED)); 241498943Sluigi } 241598943Sluigi i = setsockopt(s, IPPROTO_IP, IP_DUMMYNET_CONFIGURE, &pipe, 241698943Sluigi sizeof pipe); 241798943Sluigi if (i) 241898943Sluigi err(1, "setsockopt(%s)", "IP_DUMMYNET_CONFIGURE"); 241998943Sluigi} 242098943Sluigi 242198943Sluigistatic void 242298943Sluigiget_mac_addr_mask(char *p, u_char *addr, u_char *mask) 242398943Sluigi{ 242498943Sluigi int i, l; 242598943Sluigi 242698943Sluigi for (i=0; i<6; i++) 242798943Sluigi addr[i] = mask[i] = 0; 242898943Sluigi if (!strcmp(p, "any")) 242998943Sluigi return; 243098943Sluigi 243198943Sluigi for (i=0; *p && i<6;i++, p++) { 243298943Sluigi addr[i] = strtol(p, &p, 16); 243398943Sluigi if (*p != ':') /* we start with the mask */ 243498943Sluigi break; 243598943Sluigi } 243698943Sluigi if (*p == '/') { /* mask len */ 243798943Sluigi l = strtol(p+1, &p, 0); 243898943Sluigi for (i=0; l>0; l -=8, i++) 243998943Sluigi mask[i] = (l >=8) ? 0xff : (~0) << (8-l); 244098943Sluigi } else if (*p == '&') { /* mask */ 244198943Sluigi for (i=0, p++; *p && i<6;i++, p++) { 244298943Sluigi mask[i] = strtol(p, &p, 16); 244398943Sluigi if (*p != ':') 244498943Sluigi break; 244598943Sluigi } 244698943Sluigi } else if (*p == '\0') { 244798943Sluigi for (i=0; i<6; i++) 244898943Sluigi mask[i] = 0xff; 244998943Sluigi } 245098943Sluigi for (i=0; i<6; i++) 245198943Sluigi addr[i] &= mask[i]; 245298943Sluigi} 245398943Sluigi 245498943Sluigi/* 245598943Sluigi * helper function, updates the pointer to cmd with the length 245698943Sluigi * of the current command, and also cleans up the first word of 245798943Sluigi * the new command in case it has been clobbered before. 245898943Sluigi */ 245998943Sluigistatic ipfw_insn * 246098943Sluiginext_cmd(ipfw_insn *cmd) 246198943Sluigi{ 246298943Sluigi cmd += F_LEN(cmd); 246398943Sluigi bzero(cmd, sizeof(*cmd)); 246498943Sluigi return cmd; 246598943Sluigi} 246698943Sluigi 246798943Sluigi/* 246898943Sluigi * A function to fill simple commands of size 1. 246998943Sluigi * Existing flags are preserved. 247098943Sluigi */ 247198943Sluigistatic void 247298943Sluigifill_cmd(ipfw_insn *cmd, enum ipfw_opcodes opcode, int flags, u_int16_t arg) 247398943Sluigi{ 247498943Sluigi cmd->opcode = opcode; 247598943Sluigi cmd->len = ((cmd->len | flags) & (F_NOT | F_OR)) | 1; 247698943Sluigi cmd->arg1 = arg; 247798943Sluigi} 247898943Sluigi 247998943Sluigi/* 248098943Sluigi * Fetch and add the MAC address and type, with masks. This generates one or 248198943Sluigi * two microinstructions, and returns the pointer to the last one. 248298943Sluigi */ 248398943Sluigistatic ipfw_insn * 248498943Sluigiadd_mac(ipfw_insn *cmd, int ac, char *av[]) 248598943Sluigi{ 2486102087Sluigi ipfw_insn_mac *mac; 248798943Sluigi 2488102087Sluigi if (ac < 2) 2489102098Sluigi errx(EX_DATAERR, "MAC dst src"); 249098943Sluigi 249198943Sluigi cmd->opcode = O_MACADDR2; 249298943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | F_INSN_SIZE(ipfw_insn_mac); 249398943Sluigi 249498943Sluigi mac = (ipfw_insn_mac *)cmd; 2495101978Sluigi get_mac_addr_mask(av[0], mac->addr, mac->mask); /* dst */ 249698943Sluigi get_mac_addr_mask(av[1], &(mac->addr[6]), &(mac->mask[6])); /* src */ 2497102087Sluigi return cmd; 2498102087Sluigi} 249998943Sluigi 2500102087Sluigistatic ipfw_insn * 2501102087Sluigiadd_mactype(ipfw_insn *cmd, int ac, char *av) 2502102087Sluigi{ 2503102087Sluigi if (ac < 1) 2504102087Sluigi errx(EX_DATAERR, "missing MAC type"); 2505102087Sluigi if (strcmp(av, "any") != 0) { /* we have a non-null type */ 2506102087Sluigi fill_newports((ipfw_insn_u16 *)cmd, av, IPPROTO_ETHERTYPE); 250798943Sluigi cmd->opcode = O_MAC_TYPE; 2508102087Sluigi return cmd; 2509102087Sluigi } else 2510102087Sluigi return NULL; 2511102087Sluigi} 251298943Sluigi 2513102087Sluigistatic ipfw_insn * 2514102087Sluigiadd_proto(ipfw_insn *cmd, char *av) 2515102087Sluigi{ 2516102087Sluigi struct protoent *pe; 2517102087Sluigi u_char proto = 0; 2518102087Sluigi 2519102087Sluigi if (!strncmp(av, "all", strlen(av))) 2520102087Sluigi ; /* same as "ip" */ 2521102087Sluigi else if ((proto = atoi(av)) > 0) 2522102087Sluigi ; /* all done! */ 2523102087Sluigi else if ((pe = getprotobyname(av)) != NULL) 2524102087Sluigi proto = pe->p_proto; 2525102087Sluigi else 2526102098Sluigi return NULL; 2527102087Sluigi if (proto != IPPROTO_IP) 2528102087Sluigi fill_cmd(cmd, O_PROTO, 0, proto); 252998943Sluigi return cmd; 253098943Sluigi} 253198943Sluigi 2532102087Sluigistatic ipfw_insn * 2533102087Sluigiadd_srcip(ipfw_insn *cmd, char *av) 2534102087Sluigi{ 2535102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2536102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2537102087Sluigi cmd->opcode = O_IP_SRC_SET; 2538102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2539102087Sluigi cmd->opcode = O_IP_SRC_ME; 2540102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2541102087Sluigi cmd->opcode = O_IP_SRC; 2542102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_ip)) /* addr/mask */ 2543102087Sluigi cmd->opcode = O_IP_SRC_MASK; 2544102087Sluigi return cmd; 2545102087Sluigi} 2546102087Sluigi 2547102087Sluigistatic ipfw_insn * 2548102087Sluigiadd_dstip(ipfw_insn *cmd, char *av) 2549102087Sluigi{ 2550102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2551102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2552102087Sluigi ; 2553102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2554102087Sluigi cmd->opcode = O_IP_DST_ME; 2555102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2556102087Sluigi cmd->opcode = O_IP_DST; 2557102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_ip)) /* addr/mask */ 2558102087Sluigi cmd->opcode = O_IP_DST_MASK; 2559102087Sluigi return cmd; 2560102087Sluigi} 2561102087Sluigi 2562102087Sluigistatic ipfw_insn * 2563102087Sluigiadd_ports(ipfw_insn *cmd, char *av, u_char proto, int opcode) 2564102087Sluigi{ 2565102087Sluigi if (!strncmp(av, "any", strlen(av))) { 2566102087Sluigi return NULL; 2567102087Sluigi } else if (fill_newports((ipfw_insn_u16 *)cmd, av, proto)) { 2568102087Sluigi /* XXX todo: check that we have a protocol with ports */ 2569102087Sluigi cmd->opcode = opcode; 2570102087Sluigi return cmd; 2571102087Sluigi } 2572102087Sluigi return NULL; 2573102087Sluigi} 2574102087Sluigi 257598943Sluigi/* 257698943Sluigi * Parse arguments and assemble the microinstructions which make up a rule. 257798943Sluigi * Rules are added into the 'rulebuf' and then copied in the correct order 257898943Sluigi * into the actual rule. 257998943Sluigi * 258098943Sluigi * The syntax for a rule starts with the action, followed by an 258198943Sluigi * optional log action, and the various match patterns. 2582108533Sschweikh * In the assembled microcode, the first opcode must be an O_PROBE_STATE 258398943Sluigi * (generated if the rule includes a keep-state option), then the 258498943Sluigi * various match patterns, the "log" action, and the actual action. 2585106505Smaxim * 258698943Sluigi */ 258798943Sluigistatic void 258898943Sluigiadd(int ac, char *av[]) 258998943Sluigi{ 259098943Sluigi /* 259198943Sluigi * rules are added into the 'rulebuf' and then copied in 259298943Sluigi * the correct order into the actual rule. 259398943Sluigi * Some things that need to go out of order (prob, action etc.) 259498943Sluigi * go into actbuf[]. 259598943Sluigi */ 259698943Sluigi static u_int32_t rulebuf[255], actbuf[255], cmdbuf[255]; 259798943Sluigi 259898943Sluigi ipfw_insn *src, *dst, *cmd, *action, *prev; 2599102087Sluigi ipfw_insn *first_cmd; /* first match pattern */ 260098943Sluigi 260198943Sluigi struct ip_fw *rule; 260298943Sluigi 260398943Sluigi /* 260498943Sluigi * various flags used to record that we entered some fields. 260598943Sluigi */ 2606101116Sluigi ipfw_insn *have_state = NULL; /* check-state or keep-state */ 260798943Sluigi 260898943Sluigi int i; 260998943Sluigi 261098943Sluigi int open_par = 0; /* open parenthesis ( */ 261198943Sluigi 261298943Sluigi /* proto is here because it is used to fetch ports */ 261398943Sluigi u_char proto = IPPROTO_IP; /* default protocol */ 261498943Sluigi 2615107289Sluigi double match_prob = 1; /* match probability, default is always match */ 2616107289Sluigi 261798943Sluigi bzero(actbuf, sizeof(actbuf)); /* actions go here */ 261898943Sluigi bzero(cmdbuf, sizeof(cmdbuf)); 261998943Sluigi bzero(rulebuf, sizeof(rulebuf)); 262098943Sluigi 262198943Sluigi rule = (struct ip_fw *)rulebuf; 262298943Sluigi cmd = (ipfw_insn *)cmdbuf; 262398943Sluigi action = (ipfw_insn *)actbuf; 262498943Sluigi 262598943Sluigi av++; ac--; 262698943Sluigi 262798943Sluigi /* [rule N] -- Rule number optional */ 262898943Sluigi if (ac && isdigit(**av)) { 262998943Sluigi rule->rulenum = atoi(*av); 263098943Sluigi av++; 263198943Sluigi ac--; 263298943Sluigi } 263398943Sluigi 2634101628Sluigi /* [set N] -- set number (0..30), optional */ 2635101628Sluigi if (ac > 1 && !strncmp(*av, "set", strlen(*av))) { 2636101628Sluigi int set = strtoul(av[1], NULL, 10); 2637101628Sluigi if (set < 0 || set > 30) 2638101628Sluigi errx(EX_DATAERR, "illegal set %s", av[1]); 2639101628Sluigi rule->set = set; 2640101628Sluigi av += 2; ac -= 2; 2641101628Sluigi } 2642101628Sluigi 264398943Sluigi /* [prob D] -- match probability, optional */ 264498943Sluigi if (ac > 1 && !strncmp(*av, "prob", strlen(*av))) { 2645107289Sluigi match_prob = strtod(av[1], NULL); 264698943Sluigi 2647107289Sluigi if (match_prob <= 0 || match_prob > 1) 264898943Sluigi errx(EX_DATAERR, "illegal match prob. %s", av[1]); 264998943Sluigi av += 2; ac -= 2; 265098943Sluigi } 265198943Sluigi 265298943Sluigi /* action -- mandatory */ 265398943Sluigi NEED1("missing action"); 265498943Sluigi i = match_token(rule_actions, *av); 265598943Sluigi ac--; av++; 265698943Sluigi action->len = 1; /* default */ 265798943Sluigi switch(i) { 265898943Sluigi case TOK_CHECKSTATE: 2659101116Sluigi have_state = action; 266098943Sluigi action->opcode = O_CHECK_STATE; 266198943Sluigi break; 266298943Sluigi 266398943Sluigi case TOK_ACCEPT: 266498943Sluigi action->opcode = O_ACCEPT; 266598943Sluigi break; 266698943Sluigi 266798943Sluigi case TOK_DENY: 266898943Sluigi action->opcode = O_DENY; 266999475Sluigi action->arg1 = 0; 267098943Sluigi break; 267198943Sluigi 267299475Sluigi case TOK_REJECT: 267399475Sluigi action->opcode = O_REJECT; 267499475Sluigi action->arg1 = ICMP_UNREACH_HOST; 267599475Sluigi break; 267699475Sluigi 267799475Sluigi case TOK_RESET: 267899475Sluigi action->opcode = O_REJECT; 267999475Sluigi action->arg1 = ICMP_REJECT_RST; 268099475Sluigi break; 268199475Sluigi 268299475Sluigi case TOK_UNREACH: 268399475Sluigi action->opcode = O_REJECT; 268499475Sluigi NEED1("missing reject code"); 268599475Sluigi fill_reject_code(&action->arg1, *av); 268699475Sluigi ac--; av++; 268799475Sluigi break; 268899475Sluigi 268998943Sluigi case TOK_COUNT: 269098943Sluigi action->opcode = O_COUNT; 269198943Sluigi break; 269298943Sluigi 269398943Sluigi case TOK_QUEUE: 269498943Sluigi case TOK_PIPE: 269598943Sluigi action->len = F_INSN_SIZE(ipfw_insn_pipe); 269698943Sluigi case TOK_SKIPTO: 269798943Sluigi if (i == TOK_QUEUE) 269898943Sluigi action->opcode = O_QUEUE; 269998943Sluigi else if (i == TOK_PIPE) 270098943Sluigi action->opcode = O_PIPE; 270198943Sluigi else if (i == TOK_SKIPTO) 270298943Sluigi action->opcode = O_SKIPTO; 270398943Sluigi NEED1("missing skipto/pipe/queue number"); 270498943Sluigi action->arg1 = strtoul(*av, NULL, 10); 270598943Sluigi av++; ac--; 270698943Sluigi break; 270798943Sluigi 270898943Sluigi case TOK_DIVERT: 270998943Sluigi case TOK_TEE: 271098943Sluigi action->opcode = (i == TOK_DIVERT) ? O_DIVERT : O_TEE; 271198943Sluigi NEED1("missing divert/tee port"); 271298943Sluigi action->arg1 = strtoul(*av, NULL, 0); 271398943Sluigi if (action->arg1 == 0) { 271498943Sluigi struct servent *s; 271598943Sluigi setservent(1); 271698943Sluigi s = getservbyname(av[0], "divert"); 271798943Sluigi if (s != NULL) 271898943Sluigi action->arg1 = ntohs(s->s_port); 271998943Sluigi else 272098943Sluigi errx(EX_DATAERR, "illegal divert/tee port"); 272198943Sluigi } 272298943Sluigi ac--; av++; 272398943Sluigi break; 272498943Sluigi 272598943Sluigi case TOK_FORWARD: { 272698943Sluigi ipfw_insn_sa *p = (ipfw_insn_sa *)action; 272798943Sluigi char *s, *end; 272898943Sluigi 272998943Sluigi NEED1("missing forward address[:port]"); 273098943Sluigi 273198943Sluigi action->opcode = O_FORWARD_IP; 273298943Sluigi action->len = F_INSN_SIZE(ipfw_insn_sa); 273398943Sluigi 273498943Sluigi p->sa.sin_len = sizeof(struct sockaddr_in); 273598943Sluigi p->sa.sin_family = AF_INET; 273698943Sluigi p->sa.sin_port = 0; 273798943Sluigi /* 273898943Sluigi * locate the address-port separator (':' or ',') 273998943Sluigi */ 274098943Sluigi s = strchr(*av, ':'); 274198943Sluigi if (s == NULL) 274298943Sluigi s = strchr(*av, ','); 274398943Sluigi if (s != NULL) { 274498943Sluigi *(s++) = '\0'; 274598943Sluigi i = strtoport(s, &end, 0 /* base */, 0 /* proto */); 274698943Sluigi if (s == end) 274798943Sluigi errx(EX_DATAERR, 274898943Sluigi "illegal forwarding port ``%s''", s); 2749103241Sluigi p->sa.sin_port = (u_short)i; 275098943Sluigi } 275198943Sluigi lookup_host(*av, &(p->sa.sin_addr)); 275298943Sluigi } 275398943Sluigi ac--; av++; 275498943Sluigi break; 275598943Sluigi 275698943Sluigi default: 2757102087Sluigi errx(EX_DATAERR, "invalid action %s\n", av[-1]); 275898943Sluigi } 275998943Sluigi action = next_cmd(action); 276098943Sluigi 276198943Sluigi /* 276298943Sluigi * [log [logamount N]] -- log, optional 276398943Sluigi * 276498943Sluigi * If exists, it goes first in the cmdbuf, but then it is 276598943Sluigi * skipped in the copy section to the end of the buffer. 276698943Sluigi */ 276798943Sluigi if (ac && !strncmp(*av, "log", strlen(*av))) { 276898943Sluigi ipfw_insn_log *c = (ipfw_insn_log *)cmd; 276998943Sluigi 277098943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_log); 277198943Sluigi cmd->opcode = O_LOG; 277298943Sluigi av++; ac--; 277398943Sluigi if (ac && !strncmp(*av, "logamount", strlen(*av))) { 277498943Sluigi ac--; av++; 277598943Sluigi NEED1("logamount requires argument"); 277698943Sluigi c->max_log = atoi(*av); 277798943Sluigi if (c->max_log < 0) 277898943Sluigi errx(EX_DATAERR, "logamount must be positive"); 277998943Sluigi ac--; av++; 278098943Sluigi } 278198943Sluigi cmd = next_cmd(cmd); 278298943Sluigi } 278398943Sluigi 2784101116Sluigi if (have_state) /* must be a check-state, we are done */ 278598943Sluigi goto done; 278698943Sluigi 278798943Sluigi#define OR_START(target) \ 278898943Sluigi if (ac && (*av[0] == '(' || *av[0] == '{')) { \ 278998943Sluigi if (open_par) \ 279098943Sluigi errx(EX_USAGE, "nested \"(\" not allowed\n"); \ 2791101641Sluigi prev = NULL; \ 279298943Sluigi open_par = 1; \ 279398943Sluigi if ( (av[0])[1] == '\0') { \ 279498943Sluigi ac--; av++; \ 279598943Sluigi } else \ 279698943Sluigi (*av)++; \ 279798943Sluigi } \ 279898943Sluigi target: \ 279998943Sluigi 280098943Sluigi 280198943Sluigi#define CLOSE_PAR \ 280298943Sluigi if (open_par) { \ 280398943Sluigi if (ac && ( \ 280498943Sluigi !strncmp(*av, ")", strlen(*av)) || \ 280598943Sluigi !strncmp(*av, "}", strlen(*av)) )) { \ 2806101641Sluigi prev = NULL; \ 280798943Sluigi open_par = 0; \ 280898943Sluigi ac--; av++; \ 280998943Sluigi } else \ 281098943Sluigi errx(EX_USAGE, "missing \")\"\n"); \ 281198943Sluigi } 2812106505Smaxim 281398943Sluigi#define NOT_BLOCK \ 281498943Sluigi if (ac && !strncmp(*av, "not", strlen(*av))) { \ 281598943Sluigi if (cmd->len & F_NOT) \ 281698943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); \ 281798943Sluigi cmd->len |= F_NOT; \ 281898943Sluigi ac--; av++; \ 281998943Sluigi } 282098943Sluigi 282198943Sluigi#define OR_BLOCK(target) \ 282298943Sluigi if (ac && !strncmp(*av, "or", strlen(*av))) { \ 282398943Sluigi if (prev == NULL || open_par == 0) \ 282498943Sluigi errx(EX_DATAERR, "invalid OR block"); \ 282598943Sluigi prev->len |= F_OR; \ 282698943Sluigi ac--; av++; \ 282798943Sluigi goto target; \ 282898943Sluigi } \ 282998943Sluigi CLOSE_PAR; 283098943Sluigi 2831102087Sluigi first_cmd = cmd; 2832102098Sluigi 2833102098Sluigi#if 0 283498943Sluigi /* 2835102087Sluigi * MAC addresses, optional. 2836102087Sluigi * If we have this, we skip the part "proto from src to dst" 2837102087Sluigi * and jump straight to the option parsing. 2838102087Sluigi */ 2839102087Sluigi NOT_BLOCK; 2840102087Sluigi NEED1("missing protocol"); 2841102087Sluigi if (!strncmp(*av, "MAC", strlen(*av)) || 2842102087Sluigi !strncmp(*av, "mac", strlen(*av))) { 2843102087Sluigi ac--; av++; /* the "MAC" keyword */ 2844102087Sluigi add_mac(cmd, ac, av); /* exits in case of errors */ 2845102087Sluigi cmd = next_cmd(cmd); 2846102087Sluigi ac -= 2; av += 2; /* dst-mac and src-mac */ 2847102087Sluigi NOT_BLOCK; 2848102087Sluigi NEED1("missing mac type"); 2849102087Sluigi if (add_mactype(cmd, ac, av[0])) 2850102087Sluigi cmd = next_cmd(cmd); 2851102087Sluigi ac--; av++; /* any or mac-type */ 2852102087Sluigi goto read_options; 2853102087Sluigi } 2854102098Sluigi#endif 2855102087Sluigi 2856102087Sluigi /* 285798943Sluigi * protocol, mandatory 285898943Sluigi */ 285998943Sluigi OR_START(get_proto); 286098943Sluigi NOT_BLOCK; 286198943Sluigi NEED1("missing protocol"); 2862102087Sluigi if (add_proto(cmd, *av)) { 2863102087Sluigi av++; ac--; 2864102087Sluigi if (F_LEN(cmd) == 0) /* plain IP */ 2865102087Sluigi proto = 0; 2866102087Sluigi else { 2867102087Sluigi proto = cmd->arg1; 2868102087Sluigi prev = cmd; 2869102087Sluigi cmd = next_cmd(cmd); 2870102087Sluigi } 2871102098Sluigi } else if (first_cmd != cmd) { 2872116438Smaxim errx(EX_DATAERR, "invalid protocol ``%s''", *av); 2873102098Sluigi } else 2874102098Sluigi goto read_options; 287598943Sluigi OR_BLOCK(get_proto); 287698943Sluigi 287798943Sluigi /* 2878102087Sluigi * "from", mandatory 287998943Sluigi */ 2880102087Sluigi if (!ac || strncmp(*av, "from", strlen(*av))) 288198943Sluigi errx(EX_USAGE, "missing ``from''"); 288298943Sluigi ac--; av++; 288398943Sluigi 288498943Sluigi /* 288598943Sluigi * source IP, mandatory 288698943Sluigi */ 288798943Sluigi OR_START(source_ip); 288898943Sluigi NOT_BLOCK; /* optional "not" */ 288998943Sluigi NEED1("missing source address"); 2890102087Sluigi if (add_srcip(cmd, *av)) { 2891102087Sluigi ac--; av++; 2892102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 2893102087Sluigi prev = cmd; 2894102087Sluigi cmd = next_cmd(cmd); 2895102087Sluigi } 2896102087Sluigi } 289798943Sluigi OR_BLOCK(source_ip); 289898943Sluigi 289998943Sluigi /* 290098943Sluigi * source ports, optional 290198943Sluigi */ 290298943Sluigi NOT_BLOCK; /* optional "not" */ 2903101641Sluigi if (ac) { 2904102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 2905102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 2906102087Sluigi ac--; av++; 2907102087Sluigi if (F_LEN(cmd) != 0) 2908102087Sluigi cmd = next_cmd(cmd); 2909101641Sluigi } 291098943Sluigi } 291198943Sluigi 291298943Sluigi /* 2913102087Sluigi * "to", mandatory 291498943Sluigi */ 2915102087Sluigi if (!ac || strncmp(*av, "to", strlen(*av))) 291698943Sluigi errx(EX_USAGE, "missing ``to''"); 291798943Sluigi av++; ac--; 291898943Sluigi 291998943Sluigi /* 292098943Sluigi * destination, mandatory 292198943Sluigi */ 292298943Sluigi OR_START(dest_ip); 292398943Sluigi NOT_BLOCK; /* optional "not" */ 292498943Sluigi NEED1("missing dst address"); 2925102087Sluigi if (add_dstip(cmd, *av)) { 2926102087Sluigi ac--; av++; 2927102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 2928102087Sluigi prev = cmd; 2929102087Sluigi cmd = next_cmd(cmd); 2930102087Sluigi } 2931102087Sluigi } 293298943Sluigi OR_BLOCK(dest_ip); 293398943Sluigi 293498943Sluigi /* 293598943Sluigi * dest. ports, optional 293698943Sluigi */ 293798943Sluigi NOT_BLOCK; /* optional "not" */ 2938101641Sluigi if (ac) { 2939102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 2940102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 2941102087Sluigi ac--; av++; 2942102087Sluigi if (F_LEN(cmd) != 0) 2943102087Sluigi cmd = next_cmd(cmd); 2944101641Sluigi } 294598943Sluigi } 294698943Sluigi 294798943Sluigiread_options: 2948102087Sluigi if (ac && first_cmd == cmd) { 2949102087Sluigi /* 2950102087Sluigi * nothing specified so far, store in the rule to ease 2951102087Sluigi * printout later. 2952102087Sluigi */ 2953102087Sluigi rule->_pad = 1; 2954102087Sluigi } 295598943Sluigi prev = NULL; 295698943Sluigi while (ac) { 2957101641Sluigi char *s; 2958101641Sluigi ipfw_insn_u32 *cmd32; /* alias for cmd */ 295998943Sluigi 2960101641Sluigi s = *av; 2961101641Sluigi cmd32 = (ipfw_insn_u32 *)cmd; 2962101641Sluigi 296398943Sluigi if (*s == '!') { /* alternate syntax for NOT */ 296498943Sluigi if (cmd->len & F_NOT) 296598943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 296698943Sluigi cmd->len = F_NOT; 296798943Sluigi s++; 296898943Sluigi } 296998943Sluigi i = match_token(rule_options, s); 297098943Sluigi ac--; av++; 297198943Sluigi switch(i) { 297298943Sluigi case TOK_NOT: 297398943Sluigi if (cmd->len & F_NOT) 297498943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 297598943Sluigi cmd->len = F_NOT; 297698943Sluigi break; 297798943Sluigi 297898943Sluigi case TOK_OR: 2979101641Sluigi if (open_par == 0 || prev == NULL) 298098943Sluigi errx(EX_USAGE, "invalid \"or\" block\n"); 298198943Sluigi prev->len |= F_OR; 298298943Sluigi break; 2983101641Sluigi 2984101641Sluigi case TOK_STARTBRACE: 2985101641Sluigi if (open_par) 2986101641Sluigi errx(EX_USAGE, "+nested \"(\" not allowed\n"); 2987101641Sluigi open_par = 1; 2988101641Sluigi break; 2989101641Sluigi 2990101641Sluigi case TOK_ENDBRACE: 2991101641Sluigi if (!open_par) 2992101641Sluigi errx(EX_USAGE, "+missing \")\"\n"); 2993101641Sluigi open_par = 0; 2994102087Sluigi prev = NULL; 2995101641Sluigi break; 2996101641Sluigi 299798943Sluigi case TOK_IN: 299898943Sluigi fill_cmd(cmd, O_IN, 0, 0); 299998943Sluigi break; 300098943Sluigi 300198943Sluigi case TOK_OUT: 300298943Sluigi cmd->len ^= F_NOT; /* toggle F_NOT */ 300398943Sluigi fill_cmd(cmd, O_IN, 0, 0); 300498943Sluigi break; 300598943Sluigi 300698943Sluigi case TOK_FRAG: 300798943Sluigi fill_cmd(cmd, O_FRAG, 0, 0); 300898943Sluigi break; 300998943Sluigi 301098943Sluigi case TOK_LAYER2: 301198943Sluigi fill_cmd(cmd, O_LAYER2, 0, 0); 301298943Sluigi break; 301398943Sluigi 301498943Sluigi case TOK_XMIT: 301598943Sluigi case TOK_RECV: 301698943Sluigi case TOK_VIA: 301798943Sluigi NEED1("recv, xmit, via require interface name" 301898943Sluigi " or address"); 301998943Sluigi fill_iface((ipfw_insn_if *)cmd, av[0]); 302098943Sluigi ac--; av++; 302198943Sluigi if (F_LEN(cmd) == 0) /* not a valid address */ 302298943Sluigi break; 302398943Sluigi if (i == TOK_XMIT) 302498943Sluigi cmd->opcode = O_XMIT; 302598943Sluigi else if (i == TOK_RECV) 302698943Sluigi cmd->opcode = O_RECV; 302798943Sluigi else if (i == TOK_VIA) 302898943Sluigi cmd->opcode = O_VIA; 302998943Sluigi break; 303098943Sluigi 303199475Sluigi case TOK_ICMPTYPES: 303299475Sluigi NEED1("icmptypes requires list of types"); 303399475Sluigi fill_icmptypes((ipfw_insn_u32 *)cmd, *av); 303499475Sluigi av++; ac--; 303599475Sluigi break; 303699475Sluigi 303798943Sluigi case TOK_IPTTL: 303898943Sluigi NEED1("ipttl requires TTL"); 3039116690Sluigi if (strpbrk(*av, "-,")) { 3040116690Sluigi if (!add_ports(cmd, *av, 0, O_IPTTL)) 3041116690Sluigi errx(EX_DATAERR, "invalid ipttl %s", *av); 3042116690Sluigi } else 3043116690Sluigi fill_cmd(cmd, O_IPTTL, 0, strtoul(*av, NULL, 0)); 304498943Sluigi ac--; av++; 304598943Sluigi break; 304698943Sluigi 304798943Sluigi case TOK_IPID: 3048116690Sluigi NEED1("ipid requires id"); 3049116690Sluigi if (strpbrk(*av, "-,")) { 3050116690Sluigi if (!add_ports(cmd, *av, 0, O_IPID)) 3051116690Sluigi errx(EX_DATAERR, "invalid ipid %s", *av); 3052116690Sluigi } else 3053116690Sluigi fill_cmd(cmd, O_IPID, 0, strtoul(*av, NULL, 0)); 305498943Sluigi ac--; av++; 305598943Sluigi break; 305698943Sluigi 305798943Sluigi case TOK_IPLEN: 305898943Sluigi NEED1("iplen requires length"); 3059116690Sluigi if (strpbrk(*av, "-,")) { 3060116690Sluigi if (!add_ports(cmd, *av, 0, O_IPLEN)) 3061116690Sluigi errx(EX_DATAERR, "invalid ip len %s", *av); 3062116690Sluigi } else 3063116690Sluigi fill_cmd(cmd, O_IPLEN, 0, strtoul(*av, NULL, 0)); 306498943Sluigi ac--; av++; 306598943Sluigi break; 306698943Sluigi 306798943Sluigi case TOK_IPVER: 306898943Sluigi NEED1("ipver requires version"); 306998943Sluigi fill_cmd(cmd, O_IPVER, 0, strtoul(*av, NULL, 0)); 307098943Sluigi ac--; av++; 307198943Sluigi break; 307298943Sluigi 307399475Sluigi case TOK_IPPRECEDENCE: 307499475Sluigi NEED1("ipprecedence requires value"); 307599475Sluigi fill_cmd(cmd, O_IPPRECEDENCE, 0, 307699475Sluigi (strtoul(*av, NULL, 0) & 7) << 5); 307799475Sluigi ac--; av++; 307899475Sluigi break; 307999475Sluigi 308098943Sluigi case TOK_IPOPTS: 308198943Sluigi NEED1("missing argument for ipoptions"); 3082101116Sluigi fill_flags(cmd, O_IPOPT, f_ipopts, *av); 308398943Sluigi ac--; av++; 308498943Sluigi break; 308598943Sluigi 308699475Sluigi case TOK_IPTOS: 308799475Sluigi NEED1("missing argument for iptos"); 3088101116Sluigi fill_flags(cmd, O_IPTOS, f_iptos, *av); 308999475Sluigi ac--; av++; 309099475Sluigi break; 309199475Sluigi 309298943Sluigi case TOK_UID: 309398943Sluigi NEED1("uid requires argument"); 309498943Sluigi { 309598943Sluigi char *end; 309698943Sluigi uid_t uid; 309798943Sluigi struct passwd *pwd; 309898943Sluigi 309998943Sluigi cmd->opcode = O_UID; 310098943Sluigi uid = strtoul(*av, &end, 0); 310198943Sluigi pwd = (*end == '\0') ? getpwuid(uid) : getpwnam(*av); 310298943Sluigi if (pwd == NULL) 310398943Sluigi errx(EX_DATAERR, "uid \"%s\" nonexistent", *av); 3104106504Smaxim cmd32->d[0] = pwd->pw_uid; 310598943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 310698943Sluigi ac--; av++; 310798943Sluigi } 310898943Sluigi break; 310998943Sluigi 311098943Sluigi case TOK_GID: 311198943Sluigi NEED1("gid requires argument"); 311298943Sluigi { 311398943Sluigi char *end; 311498943Sluigi gid_t gid; 311598943Sluigi struct group *grp; 311698943Sluigi 311798943Sluigi cmd->opcode = O_GID; 311898943Sluigi gid = strtoul(*av, &end, 0); 311998943Sluigi grp = (*end == '\0') ? getgrgid(gid) : getgrnam(*av); 312098943Sluigi if (grp == NULL) 312198943Sluigi errx(EX_DATAERR, "gid \"%s\" nonexistent", *av); 3122106504Smaxim cmd32->d[0] = grp->gr_gid; 312398943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 312498943Sluigi ac--; av++; 312598943Sluigi } 312698943Sluigi break; 312798943Sluigi 312898943Sluigi case TOK_ESTAB: 312998943Sluigi fill_cmd(cmd, O_ESTAB, 0, 0); 313098943Sluigi break; 313198943Sluigi 313298943Sluigi case TOK_SETUP: 313398943Sluigi fill_cmd(cmd, O_TCPFLAGS, 0, 313498943Sluigi (TH_SYN) | ( (TH_ACK) & 0xff) <<8 ); 313598943Sluigi break; 313698943Sluigi 313798943Sluigi case TOK_TCPOPTS: 313898943Sluigi NEED1("missing argument for tcpoptions"); 313998943Sluigi fill_flags(cmd, O_TCPOPTS, f_tcpopts, *av); 314098943Sluigi ac--; av++; 314198943Sluigi break; 314298943Sluigi 314398943Sluigi case TOK_TCPSEQ: 314498943Sluigi case TOK_TCPACK: 314598943Sluigi NEED1("tcpseq/tcpack requires argument"); 314698943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 314798943Sluigi cmd->opcode = (i == TOK_TCPSEQ) ? O_TCPSEQ : O_TCPACK; 314898943Sluigi cmd32->d[0] = htonl(strtoul(*av, NULL, 0)); 314998943Sluigi ac--; av++; 315098943Sluigi break; 315198943Sluigi 315298943Sluigi case TOK_TCPWIN: 315398943Sluigi NEED1("tcpwin requires length"); 315498943Sluigi fill_cmd(cmd, O_TCPWIN, 0, 315598943Sluigi htons(strtoul(*av, NULL, 0))); 315698943Sluigi ac--; av++; 315798943Sluigi break; 315898943Sluigi 315998943Sluigi case TOK_TCPFLAGS: 316098943Sluigi NEED1("missing argument for tcpflags"); 316198943Sluigi cmd->opcode = O_TCPFLAGS; 316298943Sluigi fill_flags(cmd, O_TCPFLAGS, f_tcpflags, *av); 316398943Sluigi ac--; av++; 316498943Sluigi break; 316598943Sluigi 316698943Sluigi case TOK_KEEPSTATE: 3167101641Sluigi if (open_par) 3168101641Sluigi errx(EX_USAGE, "keep-state cannot be part " 3169101641Sluigi "of an or block"); 317099909Sluigi if (have_state) 3171101116Sluigi errx(EX_USAGE, "only one of keep-state " 317299909Sluigi "and limit is allowed"); 3173101116Sluigi have_state = cmd; 317498943Sluigi fill_cmd(cmd, O_KEEP_STATE, 0, 0); 317598943Sluigi break; 317698943Sluigi 317798943Sluigi case TOK_LIMIT: 3178101641Sluigi if (open_par) 3179101641Sluigi errx(EX_USAGE, "limit cannot be part " 3180101641Sluigi "of an or block"); 318199909Sluigi if (have_state) 3182101116Sluigi errx(EX_USAGE, "only one of keep-state " 318399909Sluigi "and limit is allowed"); 3184101641Sluigi NEED1("limit needs mask and # of connections"); 3185101116Sluigi have_state = cmd; 318698943Sluigi { 318798943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 318898943Sluigi 318998943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_limit); 319098943Sluigi cmd->opcode = O_LIMIT; 319198943Sluigi c->limit_mask = 0; 319298943Sluigi c->conn_limit = 0; 319398943Sluigi for (; ac >1 ;) { 319498943Sluigi int val; 319598943Sluigi 319698943Sluigi val = match_token(limit_masks, *av); 319798943Sluigi if (val <= 0) 319898943Sluigi break; 319998943Sluigi c->limit_mask |= val; 320098943Sluigi ac--; av++; 320198943Sluigi } 320298943Sluigi c->conn_limit = atoi(*av); 320398943Sluigi if (c->conn_limit == 0) 320498943Sluigi errx(EX_USAGE, "limit: limit must be >0"); 320598943Sluigi if (c->limit_mask == 0) 320698943Sluigi errx(EX_USAGE, "missing limit mask"); 320798943Sluigi ac--; av++; 320898943Sluigi } 320998943Sluigi break; 321098943Sluigi 3211102087Sluigi case TOK_PROTO: 3212102087Sluigi NEED1("missing protocol"); 3213102087Sluigi if (add_proto(cmd, *av)) { 3214102087Sluigi proto = cmd->arg1; 3215102087Sluigi ac--; av++; 3216102098Sluigi } else 3217116438Smaxim errx(EX_DATAERR, "invalid protocol ``%s''", 3218116438Smaxim *av); 3219102087Sluigi break; 3220106505Smaxim 3221102087Sluigi case TOK_SRCIP: 3222102087Sluigi NEED1("missing source IP"); 3223102087Sluigi if (add_srcip(cmd, *av)) { 3224102087Sluigi ac--; av++; 3225102087Sluigi } 3226102087Sluigi break; 3227102087Sluigi 3228102087Sluigi case TOK_DSTIP: 3229102087Sluigi NEED1("missing destination IP"); 3230102087Sluigi if (add_dstip(cmd, *av)) { 3231102087Sluigi ac--; av++; 3232102087Sluigi } 3233102087Sluigi break; 3234102087Sluigi 3235102087Sluigi case TOK_SRCPORT: 3236102087Sluigi NEED1("missing source port"); 3237102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 3238102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 3239102087Sluigi ac--; av++; 3240102087Sluigi } else 3241102087Sluigi errx(EX_DATAERR, "invalid source port %s", *av); 3242102087Sluigi break; 3243102087Sluigi 3244102087Sluigi case TOK_DSTPORT: 3245102087Sluigi NEED1("missing destination port"); 3246102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 3247102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 3248102087Sluigi ac--; av++; 3249102087Sluigi } else 3250102087Sluigi errx(EX_DATAERR, "invalid destination port %s", 3251102087Sluigi *av); 3252102087Sluigi break; 3253102087Sluigi 3254102087Sluigi case TOK_MAC: 3255102087Sluigi if (ac < 2) 3256102087Sluigi errx(EX_USAGE, "MAC dst-mac src-mac"); 3257102087Sluigi if (add_mac(cmd, ac, av)) { 3258102087Sluigi ac -= 2; av += 2; 3259102087Sluigi } 3260102087Sluigi break; 3261102087Sluigi 3262102087Sluigi case TOK_MACTYPE: 3263102087Sluigi NEED1("missing mac type"); 3264102087Sluigi if (!add_mactype(cmd, ac, *av)) 3265116438Smaxim errx(EX_DATAERR, "invalid mac type %s", *av); 3266102087Sluigi ac--; av++; 3267102087Sluigi break; 3268102087Sluigi 3269112250Scjc case TOK_VERREVPATH: 3270112250Scjc fill_cmd(cmd, O_VERREVPATH, 0, 0); 3271112250Scjc break; 3272116919Sluigi 327398943Sluigi default: 327498943Sluigi errx(EX_USAGE, "unrecognised option [%d] %s\n", i, s); 327598943Sluigi } 327698943Sluigi if (F_LEN(cmd) > 0) { /* prepare to advance */ 327798943Sluigi prev = cmd; 327898943Sluigi cmd = next_cmd(cmd); 327998943Sluigi } 328098943Sluigi } 328198943Sluigi 328298943Sluigidone: 328398943Sluigi /* 328498943Sluigi * Now copy stuff into the rule. 328598943Sluigi * If we have a keep-state option, the first instruction 328698943Sluigi * must be a PROBE_STATE (which is generated here). 328798943Sluigi * If we have a LOG option, it was stored as the first command, 328898943Sluigi * and now must be moved to the top of the action part. 328998943Sluigi */ 329098943Sluigi dst = (ipfw_insn *)rule->cmd; 329198943Sluigi 329298943Sluigi /* 3293107289Sluigi * First thing to write into the command stream is the match probability. 3294107289Sluigi */ 3295107289Sluigi if (match_prob != 1) { /* 1 means always match */ 3296107289Sluigi dst->opcode = O_PROB; 3297107289Sluigi dst->len = 2; 3298107289Sluigi *((int32_t *)(dst+1)) = (int32_t)(match_prob * 0x7fffffff); 3299107289Sluigi dst += dst->len; 3300107289Sluigi } 3301107289Sluigi 3302107289Sluigi /* 330398943Sluigi * generate O_PROBE_STATE if necessary 330498943Sluigi */ 3305101116Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 330698943Sluigi fill_cmd(dst, O_PROBE_STATE, 0, 0); 330798943Sluigi dst = next_cmd(dst); 330898943Sluigi } 330998943Sluigi /* 3310101116Sluigi * copy all commands but O_LOG, O_KEEP_STATE, O_LIMIT 331198943Sluigi */ 331298943Sluigi for (src = (ipfw_insn *)cmdbuf; src != cmd; src += i) { 331398943Sluigi i = F_LEN(src); 331498943Sluigi 3315101116Sluigi switch (src->opcode) { 3316101116Sluigi case O_LOG: 3317101116Sluigi case O_KEEP_STATE: 3318101116Sluigi case O_LIMIT: 3319101116Sluigi break; 3320101116Sluigi default: 332198943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 332298943Sluigi dst += i; 332398943Sluigi } 332498943Sluigi } 332598943Sluigi 332698943Sluigi /* 3327101116Sluigi * put back the have_state command as last opcode 3328101116Sluigi */ 3329101295Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 3330101116Sluigi i = F_LEN(have_state); 3331101116Sluigi bcopy(have_state, dst, i * sizeof(u_int32_t)); 3332101116Sluigi dst += i; 3333101116Sluigi } 3334101116Sluigi /* 333598943Sluigi * start action section 333698943Sluigi */ 333798943Sluigi rule->act_ofs = dst - rule->cmd; 333898943Sluigi 333998943Sluigi /* 334098943Sluigi * put back O_LOG if necessary 334198943Sluigi */ 334298943Sluigi src = (ipfw_insn *)cmdbuf; 334398943Sluigi if ( src->opcode == O_LOG ) { 334498943Sluigi i = F_LEN(src); 334598943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 334698943Sluigi dst += i; 334798943Sluigi } 334898943Sluigi /* 334998943Sluigi * copy all other actions 335098943Sluigi */ 335198943Sluigi for (src = (ipfw_insn *)actbuf; src != action; src += i) { 335298943Sluigi i = F_LEN(src); 335398943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 335498943Sluigi dst += i; 335598943Sluigi } 335698943Sluigi 335798943Sluigi rule->cmd_len = (u_int32_t *)dst - (u_int32_t *)(rule->cmd); 335898943Sluigi i = (void *)dst - (void *)rule; 335998943Sluigi if (getsockopt(s, IPPROTO_IP, IP_FW_ADD, rule, &i) == -1) 336098943Sluigi err(EX_UNAVAILABLE, "getsockopt(%s)", "IP_FW_ADD"); 336198943Sluigi if (!do_quiet) 3362112189Smaxim show_ipfw(rule, 10, 10); 336398943Sluigi} 336498943Sluigi 336598943Sluigistatic void 3366101978Sluigizero(int ac, char *av[]) 336798943Sluigi{ 336898943Sluigi int rulenum; 336998943Sluigi int failed = EX_OK; 337098943Sluigi 337198943Sluigi av++; ac--; 337298943Sluigi 337398943Sluigi if (!ac) { 337498943Sluigi /* clear all entries */ 337598943Sluigi if (setsockopt(s, IPPROTO_IP, IP_FW_ZERO, NULL, 0) < 0) 337698943Sluigi err(EX_UNAVAILABLE, "setsockopt(%s)", "IP_FW_ZERO"); 337798943Sluigi if (!do_quiet) 337898943Sluigi printf("Accounting cleared.\n"); 337998943Sluigi 338098943Sluigi return; 338198943Sluigi } 338298943Sluigi 338398943Sluigi while (ac) { 338498943Sluigi /* Rule number */ 338598943Sluigi if (isdigit(**av)) { 338698943Sluigi rulenum = atoi(*av); 338798943Sluigi av++; 338898943Sluigi ac--; 338998943Sluigi if (setsockopt(s, IPPROTO_IP, 339098943Sluigi IP_FW_ZERO, &rulenum, sizeof rulenum)) { 339198943Sluigi warn("rule %u: setsockopt(IP_FW_ZERO)", 339298943Sluigi rulenum); 339398943Sluigi failed = EX_UNAVAILABLE; 339498943Sluigi } else if (!do_quiet) 339598943Sluigi printf("Entry %d cleared\n", rulenum); 339698943Sluigi } else { 339798943Sluigi errx(EX_USAGE, "invalid rule number ``%s''", *av); 339898943Sluigi } 339998943Sluigi } 340098943Sluigi if (failed != EX_OK) 340198943Sluigi exit(failed); 340298943Sluigi} 340398943Sluigi 340498943Sluigistatic void 3405101978Sluigiresetlog(int ac, char *av[]) 340698943Sluigi{ 340798943Sluigi int rulenum; 340898943Sluigi int failed = EX_OK; 340998943Sluigi 341098943Sluigi av++; ac--; 341198943Sluigi 341298943Sluigi if (!ac) { 341398943Sluigi /* clear all entries */ 341498943Sluigi if (setsockopt(s, IPPROTO_IP, IP_FW_RESETLOG, NULL, 0) < 0) 341598943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_FW_RESETLOG)"); 341698943Sluigi if (!do_quiet) 341798943Sluigi printf("Logging counts reset.\n"); 341898943Sluigi 341998943Sluigi return; 342098943Sluigi } 342198943Sluigi 342298943Sluigi while (ac) { 342398943Sluigi /* Rule number */ 342498943Sluigi if (isdigit(**av)) { 342598943Sluigi rulenum = atoi(*av); 342698943Sluigi av++; 342798943Sluigi ac--; 342898943Sluigi if (setsockopt(s, IPPROTO_IP, 342998943Sluigi IP_FW_RESETLOG, &rulenum, sizeof rulenum)) { 343098943Sluigi warn("rule %u: setsockopt(IP_FW_RESETLOG)", 343198943Sluigi rulenum); 343298943Sluigi failed = EX_UNAVAILABLE; 343398943Sluigi } else if (!do_quiet) 343498943Sluigi printf("Entry %d logging count reset\n", 343598943Sluigi rulenum); 343698943Sluigi } else { 343798943Sluigi errx(EX_DATAERR, "invalid rule number ``%s''", *av); 343898943Sluigi } 343998943Sluigi } 344098943Sluigi if (failed != EX_OK) 344198943Sluigi exit(failed); 344298943Sluigi} 344398943Sluigi 344498943Sluigistatic void 344598943Sluigiflush() 344698943Sluigi{ 344798943Sluigi int cmd = do_pipe ? IP_DUMMYNET_FLUSH : IP_FW_FLUSH; 344898943Sluigi 344998943Sluigi if (!do_force && !do_quiet) { /* need to ask user */ 345098943Sluigi int c; 345198943Sluigi 345298943Sluigi printf("Are you sure? [yn] "); 345398943Sluigi fflush(stdout); 345498943Sluigi do { 345598943Sluigi c = toupper(getc(stdin)); 345698943Sluigi while (c != '\n' && getc(stdin) != '\n') 345798943Sluigi if (feof(stdin)) 345898943Sluigi return; /* and do not flush */ 345998943Sluigi } while (c != 'Y' && c != 'N'); 346098943Sluigi printf("\n"); 346198943Sluigi if (c == 'N') /* user said no */ 346298943Sluigi return; 346398943Sluigi } 346498943Sluigi if (setsockopt(s, IPPROTO_IP, cmd, NULL, 0) < 0) 346598943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_%s_FLUSH)", 346698943Sluigi do_pipe ? "DUMMYNET" : "FW"); 346798943Sluigi if (!do_quiet) 346898943Sluigi printf("Flushed all %s.\n", do_pipe ? "pipes" : "rules"); 346998943Sluigi} 347098943Sluigi 347198943Sluigistatic int 347298943Sluigiipfw_main(int ac, char **av) 347398943Sluigi{ 347498943Sluigi int ch; 347598943Sluigi 347698943Sluigi if (ac == 1) 347798943Sluigi show_usage(); 347898943Sluigi 347998943Sluigi /* Set the force flag for non-interactive processes */ 348098943Sluigi do_force = !isatty(STDIN_FILENO); 348198943Sluigi 348298943Sluigi optind = optreset = 1; 3483102098Sluigi while ((ch = getopt(ac, av, "hs:acdefNqStv")) != -1) 348498943Sluigi switch (ch) { 348598943Sluigi case 'h': /* help */ 348698943Sluigi help(); 348798943Sluigi break; /* NOTREACHED */ 348898943Sluigi 348998943Sluigi case 's': /* sort */ 349098943Sluigi do_sort = atoi(optarg); 349198943Sluigi break; 349298943Sluigi case 'a': 349398943Sluigi do_acct = 1; 349498943Sluigi break; 3495102098Sluigi case 'c': 3496102098Sluigi do_compact = 1; 3497102098Sluigi break; 349898943Sluigi case 'd': 349998943Sluigi do_dynamic = 1; 350098943Sluigi break; 350198943Sluigi case 'e': 350298943Sluigi do_expired = 1; 350398943Sluigi break; 350498943Sluigi case 'f': 350598943Sluigi do_force = 1; 350698943Sluigi break; 350798943Sluigi case 'N': 350898943Sluigi do_resolv = 1; 350998943Sluigi break; 351098943Sluigi case 'q': 351198943Sluigi do_quiet = 1; 351298943Sluigi break; 3513101628Sluigi case 'S': 3514101628Sluigi show_sets = 1; 3515101628Sluigi break; 351698943Sluigi case 't': 351798943Sluigi do_time = 1; 351898943Sluigi break; 351998943Sluigi case 'v': /* verbose */ 352098943Sluigi verbose++; 352198943Sluigi break; 352298943Sluigi default: 352398943Sluigi show_usage(); 352498943Sluigi } 352598943Sluigi 352698943Sluigi ac -= optind; 352798943Sluigi av += optind; 352898943Sluigi NEED1("bad arguments, for usage summary ``ipfw''"); 352998943Sluigi 353098943Sluigi /* 353198943Sluigi * optional: pipe or queue 353298943Sluigi */ 353398943Sluigi if (!strncmp(*av, "pipe", strlen(*av))) { 353498943Sluigi do_pipe = 1; 353598943Sluigi ac--; 353698943Sluigi av++; 353798943Sluigi } else if (!strncmp(*av, "queue", strlen(*av))) { 353898943Sluigi do_pipe = 2; 353998943Sluigi ac--; 354098943Sluigi av++; 354198943Sluigi } 354298943Sluigi NEED1("missing command"); 354398943Sluigi 354498943Sluigi /* 354598943Sluigi * for pipes and queues we normally say 'pipe NN config' 354698943Sluigi * but the code is easier to parse as 'pipe config NN' 354798943Sluigi * so we swap the two arguments. 354898943Sluigi */ 354998943Sluigi if (do_pipe > 0 && ac > 1 && *av[0] >= '0' && *av[0] <= '9') { 355098943Sluigi char *p = av[0]; 355198943Sluigi av[0] = av[1]; 355298943Sluigi av[1] = p; 355398943Sluigi } 355498943Sluigi if (!strncmp(*av, "add", strlen(*av))) 355598943Sluigi add(ac, av); 355698943Sluigi else if (do_pipe && !strncmp(*av, "config", strlen(*av))) 355798943Sluigi config_pipe(ac, av); 3558101978Sluigi else if (!strncmp(*av, "delete", strlen(*av))) 355998943Sluigi delete(ac, av); 356098943Sluigi else if (!strncmp(*av, "flush", strlen(*av))) 356198943Sluigi flush(); 356298943Sluigi else if (!strncmp(*av, "zero", strlen(*av))) 356398943Sluigi zero(ac, av); 356498943Sluigi else if (!strncmp(*av, "resetlog", strlen(*av))) 356598943Sluigi resetlog(ac, av); 356698943Sluigi else if (!strncmp(*av, "print", strlen(*av)) || 356798943Sluigi !strncmp(*av, "list", strlen(*av))) 356898943Sluigi list(ac, av); 3569101978Sluigi else if (!strncmp(*av, "set", strlen(*av))) 3570101978Sluigi sets_handler(ac, av); 3571109126Sdillon else if (!strncmp(*av, "enable", strlen(*av))) 3572109126Sdillon sysctl_handler(ac, av, 1); 3573109126Sdillon else if (!strncmp(*av, "disable", strlen(*av))) 3574109126Sdillon sysctl_handler(ac, av, 0); 357598943Sluigi else if (!strncmp(*av, "show", strlen(*av))) { 357698943Sluigi do_acct++; 357798943Sluigi list(ac, av); 357898943Sluigi } else 357998943Sluigi errx(EX_USAGE, "bad command `%s'", *av); 358098943Sluigi return 0; 358198943Sluigi} 358298943Sluigi 358398943Sluigi 358498943Sluigistatic void 3585106505Smaximipfw_readfile(int ac, char *av[]) 358698943Sluigi{ 358798943Sluigi#define MAX_ARGS 32 358898943Sluigi#define WHITESP " \t\f\v\n\r" 358998943Sluigi char buf[BUFSIZ]; 359098943Sluigi char *a, *p, *args[MAX_ARGS], *cmd = NULL; 359198943Sluigi char linename[10]; 359298943Sluigi int i=0, lineno=0, qflag=0, pflag=0, status; 359398943Sluigi FILE *f = NULL; 359498943Sluigi pid_t preproc = 0; 359598943Sluigi int c; 359698943Sluigi 3597108231Skbyanc while ((c = getopt(ac, av, "p:q")) != -1) { 359898943Sluigi switch(c) { 359998943Sluigi case 'p': 360098943Sluigi pflag = 1; 360198943Sluigi cmd = optarg; 360298943Sluigi args[0] = cmd; 360398943Sluigi i = 1; 360498943Sluigi break; 360598943Sluigi 360698943Sluigi case 'q': 360798943Sluigi qflag = 1; 360898943Sluigi break; 360998943Sluigi 361098943Sluigi default: 361198943Sluigi errx(EX_USAGE, "bad arguments, for usage" 361298943Sluigi " summary ``ipfw''"); 361398943Sluigi } 361498943Sluigi 3615108231Skbyanc if (pflag) 3616108231Skbyanc break; 3617108231Skbyanc } 3618108231Skbyanc 3619108231Skbyanc if (pflag) { 3620108231Skbyanc /* Pass all but the last argument to the preprocessor. */ 3621108231Skbyanc while (optind < ac - 1) { 3622108231Skbyanc if (i >= MAX_ARGS) 3623108231Skbyanc errx(EX_USAGE, "too many preprocessor options"); 3624108231Skbyanc args[i++] = av[optind++]; 3625108231Skbyanc } 3626108231Skbyanc } 3627108231Skbyanc 362898943Sluigi av += optind; 362998943Sluigi ac -= optind; 363098943Sluigi if (ac != 1) 363198943Sluigi errx(EX_USAGE, "extraneous filename arguments"); 363298943Sluigi 363398943Sluigi if ((f = fopen(av[0], "r")) == NULL) 363498943Sluigi err(EX_UNAVAILABLE, "fopen: %s", av[0]); 363598943Sluigi 363698943Sluigi if (pflag) { 363798943Sluigi /* pipe through preprocessor (cpp or m4) */ 363898943Sluigi int pipedes[2]; 363998943Sluigi 364098943Sluigi args[i] = 0; 364198943Sluigi 364298943Sluigi if (pipe(pipedes) == -1) 364398943Sluigi err(EX_OSERR, "cannot create pipe"); 364498943Sluigi 364598943Sluigi switch((preproc = fork())) { 364698943Sluigi case -1: 364798943Sluigi err(EX_OSERR, "cannot fork"); 364898943Sluigi 364998943Sluigi case 0: 365098943Sluigi /* child */ 365198943Sluigi if (dup2(fileno(f), 0) == -1 365298943Sluigi || dup2(pipedes[1], 1) == -1) 365398943Sluigi err(EX_OSERR, "dup2()"); 365498943Sluigi fclose(f); 365598943Sluigi close(pipedes[1]); 365698943Sluigi close(pipedes[0]); 365798943Sluigi execvp(cmd, args); 365898943Sluigi err(EX_OSERR, "execvp(%s) failed", cmd); 365998943Sluigi 366098943Sluigi default: 366198943Sluigi /* parent */ 366298943Sluigi fclose(f); 366398943Sluigi close(pipedes[1]); 366498943Sluigi if ((f = fdopen(pipedes[0], "r")) == NULL) { 366598943Sluigi int savederrno = errno; 366698943Sluigi 366798943Sluigi (void)kill(preproc, SIGTERM); 366898943Sluigi errno = savederrno; 366998943Sluigi err(EX_OSERR, "fdopen()"); 367098943Sluigi } 367198943Sluigi } 367298943Sluigi } 367398943Sluigi 367498943Sluigi while (fgets(buf, BUFSIZ, f)) { 367598943Sluigi lineno++; 367698943Sluigi sprintf(linename, "Line %d", lineno); 367798943Sluigi args[0] = linename; 367898943Sluigi 367998943Sluigi if (*buf == '#') 368098943Sluigi continue; 368198943Sluigi if ((p = strchr(buf, '#')) != NULL) 368298943Sluigi *p = '\0'; 368398943Sluigi i = 1; 368498943Sluigi if (qflag) 368598943Sluigi args[i++] = "-q"; 368698943Sluigi for (a = strtok(buf, WHITESP); 368798943Sluigi a && i < MAX_ARGS; a = strtok(NULL, WHITESP), i++) 368898943Sluigi args[i] = a; 368998943Sluigi if (i == (qflag? 2: 1)) 369098943Sluigi continue; 369198943Sluigi if (i == MAX_ARGS) 369298943Sluigi errx(EX_USAGE, "%s: too many arguments", 369398943Sluigi linename); 369498943Sluigi args[i] = NULL; 369598943Sluigi 369698943Sluigi ipfw_main(i, args); 369798943Sluigi } 369898943Sluigi fclose(f); 369998943Sluigi if (pflag) { 370098943Sluigi if (waitpid(preproc, &status, 0) == -1) 370198943Sluigi errx(EX_OSERR, "waitpid()"); 370298943Sluigi if (WIFEXITED(status) && WEXITSTATUS(status) != EX_OK) 370398943Sluigi errx(EX_UNAVAILABLE, 370498943Sluigi "preprocessor exited with status %d", 370598943Sluigi WEXITSTATUS(status)); 370698943Sluigi else if (WIFSIGNALED(status)) 370798943Sluigi errx(EX_UNAVAILABLE, 370898943Sluigi "preprocessor exited with signal %d", 370998943Sluigi WTERMSIG(status)); 371098943Sluigi } 371198943Sluigi} 371298943Sluigi 371398943Sluigiint 371498943Sluigimain(int ac, char *av[]) 371598943Sluigi{ 371698943Sluigi s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); 371798943Sluigi if (s < 0) 371898943Sluigi err(EX_UNAVAILABLE, "socket"); 371998943Sluigi 372098943Sluigi /* 372198943Sluigi * If the last argument is an absolute pathname, interpret it 372298943Sluigi * as a file to be preprocessed. 372398943Sluigi */ 372498943Sluigi 372598943Sluigi if (ac > 1 && av[ac - 1][0] == '/' && access(av[ac - 1], R_OK) == 0) 372698943Sluigi ipfw_readfile(ac, av); 372798943Sluigi else 372898943Sluigi ipfw_main(ac, av); 372998943Sluigi return EX_OK; 373098943Sluigi} 3731