ipfw2.c revision 116716
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 116716 2003-06-23 08:20:28Z 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; 1228112250Scjc 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 } 128098943Sluigi 1281115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 1282115793Sticso 1283115793Sticso printf("%05d %*llu %*llu (%ds)", rulenum, pcwidth, 1284115793Sticso align_uint64(&d->pcnt), bcwidth, 1285115793Sticso align_uint64(&d->bcnt), d->expire); 128698943Sluigi switch (d->dyn_type) { 128798943Sluigi case O_LIMIT_PARENT: 128898943Sluigi printf(" PARENT %d", d->count); 128998943Sluigi break; 129098943Sluigi case O_LIMIT: 129198943Sluigi printf(" LIMIT"); 129298943Sluigi break; 129398943Sluigi case O_KEEP_STATE: /* bidir, no mask */ 1294106505Smaxim printf(" STATE"); 129598943Sluigi break; 129698943Sluigi } 129798943Sluigi 129898943Sluigi if ((pe = getprotobynumber(d->id.proto)) != NULL) 129998943Sluigi printf(" %s", pe->p_name); 130098943Sluigi else 130198943Sluigi printf(" proto %u", d->id.proto); 130298943Sluigi 130398943Sluigi a.s_addr = htonl(d->id.src_ip); 130498943Sluigi printf(" %s %d", inet_ntoa(a), d->id.src_port); 130598943Sluigi 130698943Sluigi a.s_addr = htonl(d->id.dst_ip); 130798943Sluigi printf(" <-> %s %d", inet_ntoa(a), d->id.dst_port); 130898943Sluigi printf("\n"); 130998943Sluigi} 131098943Sluigi 131198943Sluigiint 131298943Sluigisort_q(const void *pa, const void *pb) 131398943Sluigi{ 131498943Sluigi int rev = (do_sort < 0); 131598943Sluigi int field = rev ? -do_sort : do_sort; 131698943Sluigi long long res = 0; 131798943Sluigi const struct dn_flow_queue *a = pa; 131898943Sluigi const struct dn_flow_queue *b = pb; 131998943Sluigi 132098943Sluigi switch (field) { 132198943Sluigi case 1: /* pkts */ 132298943Sluigi res = a->len - b->len; 132398943Sluigi break; 132498943Sluigi case 2: /* bytes */ 132598943Sluigi res = a->len_bytes - b->len_bytes; 132698943Sluigi break; 132798943Sluigi 132898943Sluigi case 3: /* tot pkts */ 132998943Sluigi res = a->tot_pkts - b->tot_pkts; 133098943Sluigi break; 133198943Sluigi 133298943Sluigi case 4: /* tot bytes */ 133398943Sluigi res = a->tot_bytes - b->tot_bytes; 133498943Sluigi break; 133598943Sluigi } 133698943Sluigi if (res < 0) 133798943Sluigi res = -1; 133898943Sluigi if (res > 0) 133998943Sluigi res = 1; 134098943Sluigi return (int)(rev ? res : -res); 134198943Sluigi} 134298943Sluigi 134398943Sluigistatic void 134498943Sluigilist_queues(struct dn_flow_set *fs, struct dn_flow_queue *q) 134598943Sluigi{ 134698943Sluigi int l; 134798943Sluigi 134898943Sluigi printf(" mask: 0x%02x 0x%08x/0x%04x -> 0x%08x/0x%04x\n", 134998943Sluigi fs->flow_mask.proto, 135098943Sluigi fs->flow_mask.src_ip, fs->flow_mask.src_port, 135198943Sluigi fs->flow_mask.dst_ip, fs->flow_mask.dst_port); 135298943Sluigi if (fs->rq_elements == 0) 135398943Sluigi return; 135498943Sluigi 135598943Sluigi printf("BKT Prot ___Source IP/port____ " 135698943Sluigi "____Dest. IP/port____ Tot_pkt/bytes Pkt/Byte Drp\n"); 135798943Sluigi if (do_sort != 0) 135898943Sluigi heapsort(q, fs->rq_elements, sizeof *q, sort_q); 135998943Sluigi for (l = 0; l < fs->rq_elements; l++) { 136098943Sluigi struct in_addr ina; 136198943Sluigi struct protoent *pe; 136298943Sluigi 136398943Sluigi ina.s_addr = htonl(q[l].id.src_ip); 136498943Sluigi printf("%3d ", q[l].hash_slot); 136598943Sluigi pe = getprotobynumber(q[l].id.proto); 136698943Sluigi if (pe) 136798943Sluigi printf("%-4s ", pe->p_name); 136898943Sluigi else 136998943Sluigi printf("%4u ", q[l].id.proto); 137098943Sluigi printf("%15s/%-5d ", 137198943Sluigi inet_ntoa(ina), q[l].id.src_port); 137298943Sluigi ina.s_addr = htonl(q[l].id.dst_ip); 137398943Sluigi printf("%15s/%-5d ", 137498943Sluigi inet_ntoa(ina), q[l].id.dst_port); 137598943Sluigi printf("%4qu %8qu %2u %4u %3u\n", 137698943Sluigi q[l].tot_pkts, q[l].tot_bytes, 137798943Sluigi q[l].len, q[l].len_bytes, q[l].drops); 137898943Sluigi if (verbose) 137998943Sluigi printf(" S %20qd F %20qd\n", 138098943Sluigi q[l].S, q[l].F); 138198943Sluigi } 138298943Sluigi} 138398943Sluigi 138498943Sluigistatic void 138598943Sluigiprint_flowset_parms(struct dn_flow_set *fs, char *prefix) 138698943Sluigi{ 138798943Sluigi int l; 138898943Sluigi char qs[30]; 138998943Sluigi char plr[30]; 139098943Sluigi char red[90]; /* Display RED parameters */ 139198943Sluigi 139298943Sluigi l = fs->qsize; 139398943Sluigi if (fs->flags_fs & DN_QSIZE_IS_BYTES) { 139498943Sluigi if (l >= 8192) 139598943Sluigi sprintf(qs, "%d KB", l / 1024); 139698943Sluigi else 139798943Sluigi sprintf(qs, "%d B", l); 139898943Sluigi } else 139998943Sluigi sprintf(qs, "%3d sl.", l); 140098943Sluigi if (fs->plr) 140198943Sluigi sprintf(plr, "plr %f", 1.0 * fs->plr / (double)(0x7fffffff)); 140298943Sluigi else 140398943Sluigi plr[0] = '\0'; 140498943Sluigi if (fs->flags_fs & DN_IS_RED) /* RED parameters */ 140598943Sluigi sprintf(red, 140698943Sluigi "\n\t %cRED w_q %f min_th %d max_th %d max_p %f", 140798943Sluigi (fs->flags_fs & DN_IS_GENTLE_RED) ? 'G' : ' ', 140898943Sluigi 1.0 * fs->w_q / (double)(1 << SCALE_RED), 140998943Sluigi SCALE_VAL(fs->min_th), 141098943Sluigi SCALE_VAL(fs->max_th), 141198943Sluigi 1.0 * fs->max_p / (double)(1 << SCALE_RED)); 141298943Sluigi else 141398943Sluigi sprintf(red, "droptail"); 141498943Sluigi 141598943Sluigi printf("%s %s%s %d queues (%d buckets) %s\n", 141698943Sluigi prefix, qs, plr, fs->rq_elements, fs->rq_size, red); 141798943Sluigi} 141898943Sluigi 141998943Sluigistatic void 142098943Sluigilist_pipes(void *data, int nbytes, int ac, char *av[]) 142198943Sluigi{ 142298943Sluigi u_long rulenum; 142398943Sluigi void *next = data; 142498943Sluigi struct dn_pipe *p = (struct dn_pipe *) data; 142598943Sluigi struct dn_flow_set *fs; 142698943Sluigi struct dn_flow_queue *q; 142798943Sluigi int l; 142898943Sluigi 142998943Sluigi if (ac > 0) 143098943Sluigi rulenum = strtoul(*av++, NULL, 10); 143198943Sluigi else 143298943Sluigi rulenum = 0; 143398943Sluigi for (; nbytes >= sizeof *p; p = (struct dn_pipe *)next) { 143498943Sluigi double b = p->bandwidth; 143598943Sluigi char buf[30]; 143698943Sluigi char prefix[80]; 143798943Sluigi 143898943Sluigi if (p->next != (struct dn_pipe *)DN_IS_PIPE) 143998943Sluigi break; /* done with pipes, now queues */ 144098943Sluigi 144198943Sluigi /* 144298943Sluigi * compute length, as pipe have variable size 144398943Sluigi */ 144498943Sluigi l = sizeof(*p) + p->fs.rq_elements * sizeof(*q); 144598943Sluigi next = (void *)p + l; 144698943Sluigi nbytes -= l; 144798943Sluigi 144898943Sluigi if (rulenum != 0 && rulenum != p->pipe_nr) 144998943Sluigi continue; 145098943Sluigi 145198943Sluigi /* 145298943Sluigi * Print rate (or clocking interface) 145398943Sluigi */ 145498943Sluigi if (p->if_name[0] != '\0') 145598943Sluigi sprintf(buf, "%s", p->if_name); 145698943Sluigi else if (b == 0) 145798943Sluigi sprintf(buf, "unlimited"); 145898943Sluigi else if (b >= 1000000) 145998943Sluigi sprintf(buf, "%7.3f Mbit/s", b/1000000); 146098943Sluigi else if (b >= 1000) 146198943Sluigi sprintf(buf, "%7.3f Kbit/s", b/1000); 146298943Sluigi else 146398943Sluigi sprintf(buf, "%7.3f bit/s ", b); 146498943Sluigi 146598943Sluigi sprintf(prefix, "%05d: %s %4d ms ", 146698943Sluigi p->pipe_nr, buf, p->delay); 146798943Sluigi print_flowset_parms(&(p->fs), prefix); 146898943Sluigi if (verbose) 146998943Sluigi printf(" V %20qd\n", p->V >> MY_M); 1470106505Smaxim 147198943Sluigi q = (struct dn_flow_queue *)(p+1); 147298943Sluigi list_queues(&(p->fs), q); 147398943Sluigi } 147498943Sluigi for (fs = next; nbytes >= sizeof *fs; fs = next) { 147598943Sluigi char prefix[80]; 147698943Sluigi 147798943Sluigi if (fs->next != (struct dn_flow_set *)DN_IS_QUEUE) 147898943Sluigi break; 147998943Sluigi l = sizeof(*fs) + fs->rq_elements * sizeof(*q); 148098943Sluigi next = (void *)fs + l; 148198943Sluigi nbytes -= l; 148298943Sluigi q = (struct dn_flow_queue *)(fs+1); 148398943Sluigi sprintf(prefix, "q%05d: weight %d pipe %d ", 148498943Sluigi fs->fs_nr, fs->weight, fs->parent_nr); 148598943Sluigi print_flowset_parms(fs, prefix); 148698943Sluigi list_queues(fs, q); 148798943Sluigi } 148898943Sluigi} 148998943Sluigi 1490101978Sluigi/* 1491101978Sluigi * This one handles all set-related commands 1492101978Sluigi * ipfw set { show | enable | disable } 1493101978Sluigi * ipfw set swap X Y 1494101978Sluigi * ipfw set move X to Y 1495101978Sluigi * ipfw set move rule X to Y 1496101978Sluigi */ 149798943Sluigistatic void 1498101978Sluigisets_handler(int ac, char *av[]) 1499101978Sluigi{ 1500101978Sluigi u_int32_t set_disable, masks[2]; 1501101978Sluigi int i, nbytes; 1502101978Sluigi u_int16_t rulenum; 1503101978Sluigi u_int8_t cmd, new_set; 1504101978Sluigi 1505101978Sluigi ac--; 1506101978Sluigi av++; 1507101978Sluigi 1508101978Sluigi if (!ac) 1509101978Sluigi errx(EX_USAGE, "set needs command"); 1510101978Sluigi if (!strncmp(*av, "show", strlen(*av)) ) { 1511101978Sluigi void *data; 1512101978Sluigi char *msg; 1513101978Sluigi 1514101978Sluigi nbytes = sizeof(struct ip_fw); 1515101978Sluigi if ((data = malloc(nbytes)) == NULL) 1516101978Sluigi err(EX_OSERR, "malloc"); 1517101978Sluigi if (getsockopt(s, IPPROTO_IP, IP_FW_GET, data, &nbytes) < 0) 1518101978Sluigi err(EX_OSERR, "getsockopt(IP_FW_GET)"); 1519115793Sticso bcopy(&((struct ip_fw *)data)->next_rule, 1520115793Sticso &set_disable, sizeof(set_disable)); 1521101978Sluigi 1522115793Sticso 1523101978Sluigi for (i = 0, msg = "disable" ; i < 31; i++) 1524101978Sluigi if ( (set_disable & (1<<i))) { 1525101978Sluigi printf("%s %d", msg, i); 1526101978Sluigi msg = ""; 1527101978Sluigi } 1528101978Sluigi msg = (set_disable) ? " enable" : "enable"; 1529101978Sluigi for (i = 0; i < 31; i++) 1530101978Sluigi if ( !(set_disable & (1<<i))) { 1531101978Sluigi printf("%s %d", msg, i); 1532101978Sluigi msg = ""; 1533101978Sluigi } 1534101978Sluigi printf("\n"); 1535101978Sluigi } else if (!strncmp(*av, "swap", strlen(*av))) { 1536101978Sluigi ac--; av++; 1537101978Sluigi if (ac != 2) 1538101978Sluigi errx(EX_USAGE, "set swap needs 2 set numbers\n"); 1539101978Sluigi rulenum = atoi(av[0]); 1540101978Sluigi new_set = atoi(av[1]); 1541101978Sluigi if (!isdigit(*(av[0])) || rulenum > 30) 1542101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[0]); 1543101978Sluigi if (!isdigit(*(av[1])) || new_set > 30) 1544101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[1]); 1545101978Sluigi masks[0] = (4 << 24) | (new_set << 16) | (rulenum); 1546101978Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, 1547101978Sluigi masks, sizeof(u_int32_t)); 1548101978Sluigi } else if (!strncmp(*av, "move", strlen(*av))) { 1549101978Sluigi ac--; av++; 1550101978Sluigi if (ac && !strncmp(*av, "rule", strlen(*av))) { 1551101978Sluigi cmd = 2; 1552101978Sluigi ac--; av++; 1553101978Sluigi } else 1554101978Sluigi cmd = 3; 1555101978Sluigi if (ac != 3 || strncmp(av[1], "to", strlen(*av))) 1556101978Sluigi errx(EX_USAGE, "syntax: set move [rule] X to Y\n"); 1557101978Sluigi rulenum = atoi(av[0]); 1558101978Sluigi new_set = atoi(av[2]); 1559101978Sluigi if (!isdigit(*(av[0])) || (cmd == 3 && rulenum > 30) || 1560101978Sluigi (cmd == 2 && rulenum == 65535) ) 1561101978Sluigi errx(EX_DATAERR, "invalid source number %s\n", av[0]); 1562101978Sluigi if (!isdigit(*(av[2])) || new_set > 30) 1563101978Sluigi errx(EX_DATAERR, "invalid dest. set %s\n", av[1]); 1564101978Sluigi masks[0] = (cmd << 24) | (new_set << 16) | (rulenum); 1565101978Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, 1566101978Sluigi masks, sizeof(u_int32_t)); 1567101978Sluigi } else if (!strncmp(*av, "disable", strlen(*av)) || 1568101978Sluigi !strncmp(*av, "enable", strlen(*av)) ) { 1569101978Sluigi int which = !strncmp(*av, "enable", strlen(*av)) ? 1 : 0; 1570101978Sluigi 1571101978Sluigi ac--; av++; 1572101978Sluigi masks[0] = masks[1] = 0; 1573101978Sluigi 1574101978Sluigi while (ac) { 1575101978Sluigi if (isdigit(**av)) { 1576101978Sluigi i = atoi(*av); 1577101978Sluigi if (i < 0 || i > 30) 1578101978Sluigi errx(EX_DATAERR, 1579101978Sluigi "invalid set number %d\n", i); 1580101978Sluigi masks[which] |= (1<<i); 1581101978Sluigi } else if (!strncmp(*av, "disable", strlen(*av))) 1582101978Sluigi which = 0; 1583101978Sluigi else if (!strncmp(*av, "enable", strlen(*av))) 1584101978Sluigi which = 1; 1585101978Sluigi else 1586101978Sluigi errx(EX_DATAERR, 1587101978Sluigi "invalid set command %s\n", *av); 1588101978Sluigi av++; ac--; 1589101978Sluigi } 1590101978Sluigi if ( (masks[0] & masks[1]) != 0 ) 1591101978Sluigi errx(EX_DATAERR, 1592101978Sluigi "cannot enable and disable the same set\n"); 1593101978Sluigi 1594101978Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, masks, sizeof(masks)); 1595101978Sluigi if (i) 1596101978Sluigi warn("set enable/disable: setsockopt(IP_FW_DEL)"); 1597101978Sluigi } else 1598101978Sluigi errx(EX_USAGE, "invalid set command %s\n", *av); 1599101978Sluigi} 1600101978Sluigi 1601101978Sluigistatic void 1602109126Sdillonsysctl_handler(int ac, char *av[], int which) 1603109126Sdillon{ 1604109126Sdillon ac--; 1605109126Sdillon av++; 1606109126Sdillon 1607109126Sdillon if (*av == NULL) { 1608109126Sdillon warnx("missing keyword to enable/disable\n"); 1609109126Sdillon } else if (strncmp(*av, "firewall", strlen(*av)) == 0) { 1610109126Sdillon sysctlbyname("net.inet.ip.fw.enable", NULL, 0, &which, sizeof(which)); 1611109126Sdillon } else if (strncmp(*av, "one_pass", strlen(*av)) == 0) { 1612109126Sdillon sysctlbyname("net.inet.ip.fw.one_pass", NULL, 0, &which, sizeof(which)); 1613109126Sdillon } else if (strncmp(*av, "debug", strlen(*av)) == 0) { 1614109126Sdillon sysctlbyname("net.inet.ip.fw.debug", NULL, 0, &which, sizeof(which)); 1615109126Sdillon } else if (strncmp(*av, "verbose", strlen(*av)) == 0) { 1616109126Sdillon sysctlbyname("net.inet.ip.fw.verbose", NULL, 0, &which, sizeof(which)); 1617109126Sdillon } else if (strncmp(*av, "dyn_keepalive", strlen(*av)) == 0) { 1618109126Sdillon sysctlbyname("net.inet.ip.fw.dyn_keepalive", NULL, 0, &which, sizeof(which)); 1619109126Sdillon } else { 1620109126Sdillon warnx("unrecognize enable/disable keyword: %s\n", *av); 1621109126Sdillon } 1622109126Sdillon} 1623109126Sdillon 1624109126Sdillonstatic void 162598943Sluigilist(int ac, char *av[]) 162698943Sluigi{ 162798943Sluigi struct ip_fw *r; 162898943Sluigi ipfw_dyn_rule *dynrules, *d; 162998943Sluigi 163098943Sluigi void *lim, *data = NULL; 1631112189Smaxim int bcwidth, n, nbytes, nstat, ndyn, pcwidth, width; 163298943Sluigi int exitval = EX_OK; 163398943Sluigi int lac; 163498943Sluigi char **lav; 163598943Sluigi u_long rnum; 163698943Sluigi char *endptr; 163798943Sluigi int seen = 0; 163898943Sluigi 163998943Sluigi const int ocmd = do_pipe ? IP_DUMMYNET_GET : IP_FW_GET; 164098943Sluigi int nalloc = 1024; /* start somewhere... */ 164198943Sluigi 164298943Sluigi ac--; 164398943Sluigi av++; 164498943Sluigi 164598943Sluigi /* get rules or pipes from kernel, resizing array as necessary */ 164698943Sluigi nbytes = nalloc; 164798943Sluigi 164898943Sluigi while (nbytes >= nalloc) { 164998943Sluigi nalloc = nalloc * 2 + 200; 165098943Sluigi nbytes = nalloc; 165198943Sluigi if ((data = realloc(data, nbytes)) == NULL) 165298943Sluigi err(EX_OSERR, "realloc"); 165398943Sluigi if (getsockopt(s, IPPROTO_IP, ocmd, data, &nbytes) < 0) 165498943Sluigi err(EX_OSERR, "getsockopt(IP_%s_GET)", 165598943Sluigi do_pipe ? "DUMMYNET" : "FW"); 165698943Sluigi } 165798943Sluigi 165898943Sluigi if (do_pipe) { 165998943Sluigi list_pipes(data, nbytes, ac, av); 166098943Sluigi goto done; 166198943Sluigi } 166298943Sluigi 166398943Sluigi /* 166498943Sluigi * Count static rules. They have variable size so we 166598943Sluigi * need to scan the list to count them. 166698943Sluigi */ 166798943Sluigi for (nstat = 1, r = data, lim = data + nbytes; 166898943Sluigi r->rulenum < 65535 && (void *)r < lim; 166998943Sluigi ++nstat, r = (void *)r + RULESIZE(r) ) 167098943Sluigi ; /* nothing */ 167198943Sluigi 167298943Sluigi /* 167398943Sluigi * Count dynamic rules. This is easier as they have 167498943Sluigi * fixed size. 167598943Sluigi */ 167698943Sluigi r = (void *)r + RULESIZE(r); 167798943Sluigi dynrules = (ipfw_dyn_rule *)r ; 167898943Sluigi n = (void *)r - data; 167998943Sluigi ndyn = (nbytes - n) / sizeof *dynrules; 168098943Sluigi 1681112189Smaxim /* if showing stats, figure out column widths ahead of time */ 1682112189Smaxim bcwidth = pcwidth = 0; 1683112189Smaxim if (do_acct) { 1684112189Smaxim for (n = 0, r = data; n < nstat; 1685112189Smaxim n++, r = (void *)r + RULESIZE(r)) { 1686112189Smaxim /* packet counter */ 1687115793Sticso width = snprintf(NULL, 0, "%llu", 1688115793Sticso align_uint64(&r->pcnt)); 1689112189Smaxim if (width > pcwidth) 1690112189Smaxim pcwidth = width; 1691112189Smaxim 1692112189Smaxim /* byte counter */ 1693115793Sticso width = snprintf(NULL, 0, "%llu", 1694115793Sticso align_uint64(&r->bcnt)); 1695112189Smaxim if (width > bcwidth) 1696112189Smaxim bcwidth = width; 1697112189Smaxim } 1698112189Smaxim } 1699112189Smaxim if (do_dynamic && ndyn) { 1700112189Smaxim for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1701115793Sticso width = snprintf(NULL, 0, "%llu", 1702115793Sticso align_uint64(&d->pcnt)); 1703112189Smaxim if (width > pcwidth) 1704112189Smaxim pcwidth = width; 1705112189Smaxim 1706115793Sticso width = snprintf(NULL, 0, "%llu", 1707115793Sticso align_uint64(&d->bcnt)); 1708112189Smaxim if (width > bcwidth) 1709112189Smaxim bcwidth = width; 1710112189Smaxim } 1711112189Smaxim } 171298943Sluigi /* if no rule numbers were specified, list all rules */ 171398943Sluigi if (ac == 0) { 171498943Sluigi for (n = 0, r = data; n < nstat; 171598943Sluigi n++, r = (void *)r + RULESIZE(r) ) 1716112189Smaxim show_ipfw(r, pcwidth, bcwidth); 171798943Sluigi 171898943Sluigi if (do_dynamic && ndyn) { 171998943Sluigi printf("## Dynamic rules (%d):\n", ndyn); 172098943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) 1721112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 172298943Sluigi } 172398943Sluigi goto done; 172498943Sluigi } 172598943Sluigi 172698943Sluigi /* display specific rules requested on command line */ 172798943Sluigi 172898943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 172998943Sluigi /* convert command line rule # */ 173098943Sluigi rnum = strtoul(*lav++, &endptr, 10); 173198943Sluigi if (*endptr) { 173298943Sluigi exitval = EX_USAGE; 173398943Sluigi warnx("invalid rule number: %s", *(lav - 1)); 173498943Sluigi continue; 173598943Sluigi } 173698943Sluigi for (n = seen = 0, r = data; n < nstat; 173798943Sluigi n++, r = (void *)r + RULESIZE(r) ) { 173898943Sluigi if (r->rulenum > rnum) 173998943Sluigi break; 174098943Sluigi if (r->rulenum == rnum) { 1741112189Smaxim show_ipfw(r, pcwidth, bcwidth); 174298943Sluigi seen = 1; 174398943Sluigi } 174498943Sluigi } 174598943Sluigi if (!seen) { 174698943Sluigi /* give precedence to other error(s) */ 174798943Sluigi if (exitval == EX_OK) 174898943Sluigi exitval = EX_UNAVAILABLE; 174998943Sluigi warnx("rule %lu does not exist", rnum); 175098943Sluigi } 175198943Sluigi } 175298943Sluigi 175398943Sluigi if (do_dynamic && ndyn) { 175498943Sluigi printf("## Dynamic rules:\n"); 175598943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 175698943Sluigi rnum = strtoul(*lav++, &endptr, 10); 175798943Sluigi if (*endptr) 175898943Sluigi /* already warned */ 175998943Sluigi continue; 176098943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1761115793Sticso uint16_t rulenum; 1762115793Sticso 1763115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 1764115793Sticso if (rulenum > rnum) 176598943Sluigi break; 1766115793Sticso if (rulenum == rnum) 1767112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 176898943Sluigi } 176998943Sluigi } 177098943Sluigi } 177198943Sluigi 177298943Sluigi ac = 0; 177398943Sluigi 177498943Sluigidone: 177598943Sluigi free(data); 177698943Sluigi 177798943Sluigi if (exitval != EX_OK) 177898943Sluigi exit(exitval); 177998943Sluigi} 178098943Sluigi 178198943Sluigistatic void 178298943Sluigishow_usage(void) 178398943Sluigi{ 178498943Sluigi fprintf(stderr, "usage: ipfw [options]\n" 178598943Sluigi" add [number] rule\n" 178698943Sluigi" pipe number config [pipeconfig]\n" 178798943Sluigi" queue number config [queueconfig]\n" 178898943Sluigi" [pipe] flush\n" 178998943Sluigi" [pipe] delete number ...\n" 179098943Sluigi" [pipe] {list|show} [number ...]\n" 179198943Sluigi" {zero|resetlog} [number ...]\n" 179298943Sluigi"do \"ipfw -h\" or see ipfw manpage for details\n" 179398943Sluigi); 179498943Sluigi 179598943Sluigi exit(EX_USAGE); 179698943Sluigi} 179798943Sluigi 179898943Sluigistatic void 179998943Sluigihelp(void) 180098943Sluigi{ 1801106505Smaxim 180298943Sluigi fprintf(stderr, "ipfw syntax summary:\n" 180398943Sluigi"ipfw add [N] [prob {0..1}] ACTION [log [logamount N]] ADDR OPTIONS\n" 180498943Sluigi"ipfw {pipe|queue} N config BODY\n" 180598943Sluigi"ipfw [pipe] {zero|delete|show} [N{,N}]\n" 180698943Sluigi"\n" 180798943Sluigi"RULE: [1..] [PROB] BODY\n" 180898943Sluigi"RULENUM: INTEGER(1..65534)\n" 180998943Sluigi"PROB: prob REAL(0..1)\n" 181098943Sluigi"BODY: check-state [LOG] (no body) |\n" 181198943Sluigi" ACTION [LOG] MATCH_ADDR [OPTION_LIST]\n" 181298943Sluigi"ACTION: check-state | allow | count | deny | reject | skipto N |\n" 181398943Sluigi" {divert|tee} PORT | forward ADDR | pipe N | queue N\n" 181498943Sluigi"ADDR: [ MAC dst src ether_type ] \n" 181598943Sluigi" [ from IPLIST [ PORT ] to IPLIST [ PORTLIST ] ]\n" 181698943Sluigi"IPLIST: IPADDR | ( IPADDR or ... or IPADDR )\n" 181798943Sluigi"IPADDR: [not] { any | me | ip | ip/bits | ip:mask | ip/bits{x,y,z} }\n" 181898943Sluigi"OPTION_LIST: OPTION [,OPTION_LIST]\n" 181998943Sluigi); 182098943Sluigiexit(0); 182198943Sluigi} 182298943Sluigi 182398943Sluigi 182498943Sluigistatic int 182598943Sluigilookup_host (char *host, struct in_addr *ipaddr) 182698943Sluigi{ 182798943Sluigi struct hostent *he; 182898943Sluigi 182998943Sluigi if (!inet_aton(host, ipaddr)) { 183098943Sluigi if ((he = gethostbyname(host)) == NULL) 183198943Sluigi return(-1); 183298943Sluigi *ipaddr = *(struct in_addr *)he->h_addr_list[0]; 183398943Sluigi } 183498943Sluigi return(0); 183598943Sluigi} 183698943Sluigi 183798943Sluigi/* 183898943Sluigi * fills the addr and mask fields in the instruction as appropriate from av. 183998943Sluigi * Update length as appropriate. 184098943Sluigi * The following formats are allowed: 184198943Sluigi * any matches any IP. Actually returns an empty instruction. 184298943Sluigi * me returns O_IP_*_ME 184398943Sluigi * 1.2.3.4 single IP address 184498943Sluigi * 1.2.3.4:5.6.7.8 address:mask 184598943Sluigi * 1.2.3.4/24 address/mask 184698943Sluigi * 1.2.3.4/26{1,6,5,4,23} set of addresses in a subnet 184798943Sluigi */ 184898943Sluigistatic void 184998943Sluigifill_ip(ipfw_insn_ip *cmd, char *av) 185098943Sluigi{ 185198943Sluigi char *p = 0, md = 0; 185298943Sluigi u_int32_t i; 185398943Sluigi 185498943Sluigi cmd->o.len &= ~F_LEN_MASK; /* zero len */ 185598943Sluigi 185698943Sluigi if (!strncmp(av, "any", strlen(av))) 185798943Sluigi return; 185898943Sluigi 185998943Sluigi if (!strncmp(av, "me", strlen(av))) { 186098943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn); 186198943Sluigi return; 186298943Sluigi } 186398943Sluigi 186498943Sluigi p = strchr(av, '/'); 186598943Sluigi if (!p) 186698943Sluigi p = strchr(av, ':'); 186798943Sluigi if (p) { 186898943Sluigi md = *p; 186998943Sluigi *p++ = '\0'; 187098943Sluigi } 187198943Sluigi 187298943Sluigi if (lookup_host(av, &cmd->addr) != 0) 187398943Sluigi errx(EX_NOHOST, "hostname ``%s'' unknown", av); 187498943Sluigi switch (md) { 187598943Sluigi case ':': 187698943Sluigi if (!inet_aton(p, &cmd->mask)) 187798943Sluigi errx(EX_DATAERR, "bad netmask ``%s''", p); 187898943Sluigi break; 187998943Sluigi case '/': 188098943Sluigi i = atoi(p); 188198943Sluigi if (i == 0) 188298943Sluigi cmd->mask.s_addr = htonl(0); 188398943Sluigi else if (i > 32) 188498943Sluigi errx(EX_DATAERR, "bad width ``%s''", p); 188598943Sluigi else 188698943Sluigi cmd->mask.s_addr = htonl(~0 << (32 - i)); 188798943Sluigi break; 188898943Sluigi default: 188998943Sluigi cmd->mask.s_addr = htonl(~0); 189098943Sluigi break; 189198943Sluigi } 189298943Sluigi cmd->addr.s_addr &= cmd->mask.s_addr; 189398943Sluigi /* 189498943Sluigi * now look if we have a set of addresses. They are stored as follows: 189598943Sluigi * arg1 is the set size (powers of 2, 2..256) 189698943Sluigi * addr is the base address IN HOST FORMAT 189798943Sluigi * mask.. is an array of u_int32_t with bits set. 189898943Sluigi */ 189998943Sluigi if (p) 190098943Sluigi p = strchr(p, '{'); 190198943Sluigi if (p) { /* fetch addresses */ 190298943Sluigi u_int32_t *d; 190398943Sluigi int low, high; 190498943Sluigi int i = contigmask((u_char *)&(cmd->mask), 32); 190598943Sluigi 190698943Sluigi if (i < 24 || i > 31) { 190798943Sluigi fprintf(stderr, "invalid set with mask %d\n", 190898943Sluigi i); 190998943Sluigi exit(0); 191098943Sluigi } 191198943Sluigi cmd->o.arg1 = 1<<(32-i); 191298943Sluigi cmd->addr.s_addr = ntohl(cmd->addr.s_addr); 191398943Sluigi d = (u_int32_t *)&cmd->mask; 191498943Sluigi cmd->o.opcode = O_IP_DST_SET; /* default */ 191598943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32) + (cmd->o.arg1+31)/32; 1916101117Sluigi for (i = 0; i < (cmd->o.arg1+31)/32 ; i++) 191798943Sluigi d[i] = 0; /* clear masks */ 191898943Sluigi 191998943Sluigi av = p+1; 192098943Sluigi low = cmd->addr.s_addr & 0xff; 192198943Sluigi high = low + cmd->o.arg1 - 1; 1922116716Sluigi i = -1; /* previous value in a range */ 192398943Sluigi while (isdigit(*av)) { 192498943Sluigi char *s; 192598943Sluigi u_int16_t a = strtol(av, &s, 0); 192698943Sluigi 192798943Sluigi if (s == av) /* no parameter */ 192898943Sluigi break; 192998943Sluigi if (a < low || a > high) { 193098943Sluigi fprintf(stderr, "addr %d out of range [%d-%d]\n", 193198943Sluigi a, low, high); 193298943Sluigi exit(0); 193398943Sluigi } 193498943Sluigi a -= low; 1935116716Sluigi if (i == -1) /* no previous in range */ 1936116716Sluigi i = a; 1937116716Sluigi else { /* check that range is valid */ 1938116716Sluigi if (i > a) 1939116716Sluigi errx(EX_DATAERR, "invalid range %d-%d", 1940116716Sluigi i+low, a+low); 1941116716Sluigi if (*s == '-') 1942116716Sluigi errx(EX_DATAERR, "double '-' in range"); 1943116716Sluigi } 1944116716Sluigi for (; i <= a; i++) 1945116716Sluigi d[i/32] |= 1<<(i & 31); 1946116716Sluigi i = -1; 1947116716Sluigi if (*s == '-') 1948116716Sluigi i = a; 1949116716Sluigi else if (*s != ',') 1950116716Sluigi break; 195198943Sluigi av = s+1; 195298943Sluigi } 195398943Sluigi return; 195498943Sluigi } 195598943Sluigi 195698943Sluigi if (cmd->mask.s_addr == 0) { /* any */ 195798943Sluigi if (cmd->o.len & F_NOT) 195898943Sluigi errx(EX_DATAERR, "not any never matches"); 195998943Sluigi else /* useless, nuke it */ 196098943Sluigi return; 196198943Sluigi } else if (cmd->mask.s_addr == IP_MASK_ALL) /* one IP */ 196298943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 196398943Sluigi else /* addr/mask */ 196498943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_ip); 196598943Sluigi} 196698943Sluigi 196798943Sluigi 196898943Sluigi/* 196998943Sluigi * helper function to process a set of flags and set bits in the 197098943Sluigi * appropriate masks. 197198943Sluigi */ 197298943Sluigistatic void 197398943Sluigifill_flags(ipfw_insn *cmd, enum ipfw_opcodes opcode, 197498943Sluigi struct _s_x *flags, char *p) 197598943Sluigi{ 197698943Sluigi u_int8_t set=0, clear=0; 197798943Sluigi 197898943Sluigi while (p && *p) { 197998943Sluigi char *q; /* points to the separator */ 198098943Sluigi int val; 198198943Sluigi u_int8_t *which; /* mask we are working on */ 198298943Sluigi 198398943Sluigi if (*p == '!') { 198498943Sluigi p++; 198598943Sluigi which = &clear; 198698943Sluigi } else 198798943Sluigi which = &set; 198898943Sluigi q = strchr(p, ','); 198998943Sluigi if (q) 199098943Sluigi *q++ = '\0'; 199198943Sluigi val = match_token(flags, p); 199298943Sluigi if (val <= 0) 199398943Sluigi errx(EX_DATAERR, "invalid flag %s", p); 199498943Sluigi *which |= (u_int8_t)val; 199598943Sluigi p = q; 199698943Sluigi } 199798943Sluigi cmd->opcode = opcode; 199898943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | 1; 199998943Sluigi cmd->arg1 = (set & 0xff) | ( (clear & 0xff) << 8); 200098943Sluigi} 200198943Sluigi 200298943Sluigi 200398943Sluigistatic void 200498943Sluigidelete(int ac, char *av[]) 200598943Sluigi{ 2006101978Sluigi u_int32_t rulenum; 200798943Sluigi struct dn_pipe pipe; 200898943Sluigi int i; 200998943Sluigi int exitval = EX_OK; 2010101628Sluigi int do_set = 0; 201198943Sluigi 201298943Sluigi memset(&pipe, 0, sizeof pipe); 201398943Sluigi 201498943Sluigi av++; ac--; 2015101641Sluigi if (ac > 0 && !strncmp(*av, "set", strlen(*av))) { 2016101978Sluigi do_set = 1; /* delete set */ 2017101628Sluigi ac--; av++; 2018101978Sluigi } 201998943Sluigi 202098943Sluigi /* Rule number */ 202198943Sluigi while (ac && isdigit(**av)) { 202298943Sluigi i = atoi(*av); av++; ac--; 202398943Sluigi if (do_pipe) { 202498943Sluigi if (do_pipe == 1) 202598943Sluigi pipe.pipe_nr = i; 202698943Sluigi else 202798943Sluigi pipe.fs.fs_nr = i; 202898943Sluigi i = setsockopt(s, IPPROTO_IP, IP_DUMMYNET_DEL, 202998943Sluigi &pipe, sizeof pipe); 203098943Sluigi if (i) { 203198943Sluigi exitval = 1; 203298943Sluigi warn("rule %u: setsockopt(IP_DUMMYNET_DEL)", 203398943Sluigi do_pipe == 1 ? pipe.pipe_nr : 203498943Sluigi pipe.fs.fs_nr); 203598943Sluigi } 203698943Sluigi } else { 2037101978Sluigi rulenum = (i & 0xffff) | (do_set << 24); 203898943Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, &rulenum, 203998943Sluigi sizeof rulenum); 204098943Sluigi if (i) { 204198943Sluigi exitval = EX_UNAVAILABLE; 204298943Sluigi warn("rule %u: setsockopt(IP_FW_DEL)", 204398943Sluigi rulenum); 204498943Sluigi } 204598943Sluigi } 204698943Sluigi } 204798943Sluigi if (exitval != EX_OK) 204898943Sluigi exit(exitval); 204998943Sluigi} 205098943Sluigi 205198943Sluigi 205298943Sluigi/* 205398943Sluigi * fill the interface structure. We do not check the name as we can 205498943Sluigi * create interfaces dynamically, so checking them at insert time 205598943Sluigi * makes relatively little sense. 205698943Sluigi * A '*' following the name means any unit. 205798943Sluigi */ 205898943Sluigistatic void 205998943Sluigifill_iface(ipfw_insn_if *cmd, char *arg) 206098943Sluigi{ 206198943Sluigi cmd->name[0] = '\0'; 206298943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_if); 206398943Sluigi 206498943Sluigi /* Parse the interface or address */ 206598943Sluigi if (!strcmp(arg, "any")) 206698943Sluigi cmd->o.len = 0; /* effectively ignore this command */ 206798943Sluigi else if (!isdigit(*arg)) { 206898943Sluigi char *q; 206998943Sluigi 207098943Sluigi strncpy(cmd->name, arg, sizeof(cmd->name)); 207198943Sluigi cmd->name[sizeof(cmd->name) - 1] = '\0'; 207298943Sluigi /* find first digit or wildcard */ 207398943Sluigi for (q = cmd->name; *q && !isdigit(*q) && *q != '*'; q++) 207498943Sluigi continue; 207598943Sluigi cmd->p.unit = (*q == '*') ? -1 : atoi(q); 207698943Sluigi *q = '\0'; 207798943Sluigi } else if (!inet_aton(arg, &cmd->p.ip)) 207898943Sluigi errx(EX_DATAERR, "bad ip address ``%s''", arg); 207998943Sluigi} 208098943Sluigi 208198943Sluigi/* 208298943Sluigi * the following macro returns an error message if we run out of 208398943Sluigi * arguments. 208498943Sluigi */ 208598943Sluigi#define NEED1(msg) {if (!ac) errx(EX_USAGE, msg);} 208698943Sluigi 208798943Sluigistatic void 208898943Sluigiconfig_pipe(int ac, char **av) 208998943Sluigi{ 209098943Sluigi struct dn_pipe pipe; 209198943Sluigi int i; 209298943Sluigi char *end; 209398943Sluigi u_int32_t a; 209498943Sluigi void *par = NULL; 209598943Sluigi 209698943Sluigi memset(&pipe, 0, sizeof pipe); 209798943Sluigi 209898943Sluigi av++; ac--; 209998943Sluigi /* Pipe number */ 210098943Sluigi if (ac && isdigit(**av)) { 210198943Sluigi i = atoi(*av); av++; ac--; 210298943Sluigi if (do_pipe == 1) 210398943Sluigi pipe.pipe_nr = i; 210498943Sluigi else 210598943Sluigi pipe.fs.fs_nr = i; 210698943Sluigi } 210799475Sluigi while (ac > 0) { 210898943Sluigi double d; 210998943Sluigi int tok = match_token(dummynet_params, *av); 211098943Sluigi ac--; av++; 211198943Sluigi 211298943Sluigi switch(tok) { 2113101978Sluigi case TOK_NOERROR: 2114101978Sluigi pipe.fs.flags_fs |= DN_NOERROR; 2115101978Sluigi break; 2116101978Sluigi 211798943Sluigi case TOK_PLR: 211898943Sluigi NEED1("plr needs argument 0..1\n"); 211998943Sluigi d = strtod(av[0], NULL); 212098943Sluigi if (d > 1) 212198943Sluigi d = 1; 212298943Sluigi else if (d < 0) 212398943Sluigi d = 0; 212498943Sluigi pipe.fs.plr = (int)(d*0x7fffffff); 212598943Sluigi ac--; av++; 212698943Sluigi break; 212798943Sluigi 212898943Sluigi case TOK_QUEUE: 212998943Sluigi NEED1("queue needs queue size\n"); 213098943Sluigi end = NULL; 213198943Sluigi pipe.fs.qsize = strtoul(av[0], &end, 0); 213298943Sluigi if (*end == 'K' || *end == 'k') { 213398943Sluigi pipe.fs.flags_fs |= DN_QSIZE_IS_BYTES; 213498943Sluigi pipe.fs.qsize *= 1024; 213598943Sluigi } else if (*end == 'B' || !strncmp(end, "by", 2)) { 213698943Sluigi pipe.fs.flags_fs |= DN_QSIZE_IS_BYTES; 213798943Sluigi } 213898943Sluigi ac--; av++; 213998943Sluigi break; 214098943Sluigi 214198943Sluigi case TOK_BUCKETS: 214298943Sluigi NEED1("buckets needs argument\n"); 214398943Sluigi pipe.fs.rq_size = strtoul(av[0], NULL, 0); 214498943Sluigi ac--; av++; 214598943Sluigi break; 214698943Sluigi 214798943Sluigi case TOK_MASK: 214898943Sluigi NEED1("mask needs mask specifier\n"); 214998943Sluigi /* 215098943Sluigi * per-flow queue, mask is dst_ip, dst_port, 215198943Sluigi * src_ip, src_port, proto measured in bits 215298943Sluigi */ 215398943Sluigi par = NULL; 215498943Sluigi 215598943Sluigi pipe.fs.flow_mask.dst_ip = 0; 215698943Sluigi pipe.fs.flow_mask.src_ip = 0; 215798943Sluigi pipe.fs.flow_mask.dst_port = 0; 215898943Sluigi pipe.fs.flow_mask.src_port = 0; 215998943Sluigi pipe.fs.flow_mask.proto = 0; 216098943Sluigi end = NULL; 216198943Sluigi 216298943Sluigi while (ac >= 1) { 216398943Sluigi u_int32_t *p32 = NULL; 216498943Sluigi u_int16_t *p16 = NULL; 216598943Sluigi 216698943Sluigi tok = match_token(dummynet_params, *av); 216798943Sluigi ac--; av++; 216898943Sluigi switch(tok) { 216998943Sluigi case TOK_ALL: 217098943Sluigi /* 217198943Sluigi * special case, all bits significant 217298943Sluigi */ 217398943Sluigi pipe.fs.flow_mask.dst_ip = ~0; 217498943Sluigi pipe.fs.flow_mask.src_ip = ~0; 217598943Sluigi pipe.fs.flow_mask.dst_port = ~0; 217698943Sluigi pipe.fs.flow_mask.src_port = ~0; 217798943Sluigi pipe.fs.flow_mask.proto = ~0; 217898943Sluigi pipe.fs.flags_fs |= DN_HAVE_FLOW_MASK; 217998943Sluigi goto end_mask; 218098943Sluigi 218198943Sluigi case TOK_DSTIP: 218298943Sluigi p32 = &pipe.fs.flow_mask.dst_ip; 218398943Sluigi break; 218498943Sluigi 218598943Sluigi case TOK_SRCIP: 218698943Sluigi p32 = &pipe.fs.flow_mask.src_ip; 218798943Sluigi break; 218898943Sluigi 218998943Sluigi case TOK_DSTPORT: 219098943Sluigi p16 = &pipe.fs.flow_mask.dst_port; 219198943Sluigi break; 219298943Sluigi 219398943Sluigi case TOK_SRCPORT: 219498943Sluigi p16 = &pipe.fs.flow_mask.src_port; 219598943Sluigi break; 219698943Sluigi 219798943Sluigi case TOK_PROTO: 219898943Sluigi break; 219998943Sluigi 220098943Sluigi default: 220198943Sluigi ac++; av--; /* backtrack */ 220298943Sluigi goto end_mask; 220398943Sluigi } 220498943Sluigi if (ac < 1) 220598943Sluigi errx(EX_USAGE, "mask: value missing"); 220698943Sluigi if (*av[0] == '/') { 220798943Sluigi a = strtoul(av[0]+1, &end, 0); 220898943Sluigi a = (a == 32) ? ~0 : (1 << a) - 1; 2209106505Smaxim } else 221099909Sluigi a = strtoul(av[0], &end, 0); 221198943Sluigi if (p32 != NULL) 221298943Sluigi *p32 = a; 221398943Sluigi else if (p16 != NULL) { 221498943Sluigi if (a > 65535) 221598943Sluigi errx(EX_DATAERR, 221698943Sluigi "mask: must be 16 bit"); 221798943Sluigi *p16 = (u_int16_t)a; 221898943Sluigi } else { 221998943Sluigi if (a > 255) 222098943Sluigi errx(EX_DATAERR, 222198943Sluigi "mask: must be 8 bit"); 222298943Sluigi pipe.fs.flow_mask.proto = (u_int8_t)a; 222398943Sluigi } 222498943Sluigi if (a != 0) 222598943Sluigi pipe.fs.flags_fs |= DN_HAVE_FLOW_MASK; 222698943Sluigi ac--; av++; 222798943Sluigi } /* end while, config masks */ 222898943Sluigiend_mask: 222998943Sluigi break; 223098943Sluigi 223198943Sluigi case TOK_RED: 223298943Sluigi case TOK_GRED: 223398943Sluigi NEED1("red/gred needs w_q/min_th/max_th/max_p\n"); 223498943Sluigi pipe.fs.flags_fs |= DN_IS_RED; 223598943Sluigi if (tok == TOK_GRED) 223698943Sluigi pipe.fs.flags_fs |= DN_IS_GENTLE_RED; 223798943Sluigi /* 223898943Sluigi * the format for parameters is w_q/min_th/max_th/max_p 223998943Sluigi */ 224098943Sluigi if ((end = strsep(&av[0], "/"))) { 224198943Sluigi double w_q = strtod(end, NULL); 224298943Sluigi if (w_q > 1 || w_q <= 0) 224398943Sluigi errx(EX_DATAERR, "0 < w_q <= 1"); 224498943Sluigi pipe.fs.w_q = (int) (w_q * (1 << SCALE_RED)); 224598943Sluigi } 224698943Sluigi if ((end = strsep(&av[0], "/"))) { 224798943Sluigi pipe.fs.min_th = strtoul(end, &end, 0); 224898943Sluigi if (*end == 'K' || *end == 'k') 224998943Sluigi pipe.fs.min_th *= 1024; 225098943Sluigi } 225198943Sluigi if ((end = strsep(&av[0], "/"))) { 225298943Sluigi pipe.fs.max_th = strtoul(end, &end, 0); 225398943Sluigi if (*end == 'K' || *end == 'k') 225498943Sluigi pipe.fs.max_th *= 1024; 225598943Sluigi } 225698943Sluigi if ((end = strsep(&av[0], "/"))) { 225798943Sluigi double max_p = strtod(end, NULL); 225898943Sluigi if (max_p > 1 || max_p <= 0) 225998943Sluigi errx(EX_DATAERR, "0 < max_p <= 1"); 226098943Sluigi pipe.fs.max_p = (int)(max_p * (1 << SCALE_RED)); 226198943Sluigi } 226298943Sluigi ac--; av++; 226398943Sluigi break; 226498943Sluigi 226598943Sluigi case TOK_DROPTAIL: 226698943Sluigi pipe.fs.flags_fs &= ~(DN_IS_RED|DN_IS_GENTLE_RED); 226798943Sluigi break; 2268106505Smaxim 226998943Sluigi case TOK_BW: 227098943Sluigi NEED1("bw needs bandwidth or interface\n"); 227198943Sluigi if (do_pipe != 1) 227298943Sluigi errx(EX_DATAERR, "bandwidth only valid for pipes"); 227398943Sluigi /* 227498943Sluigi * set clocking interface or bandwidth value 227598943Sluigi */ 227698943Sluigi if (av[0][0] >= 'a' && av[0][0] <= 'z') { 227798943Sluigi int l = sizeof(pipe.if_name)-1; 227898943Sluigi /* interface name */ 227998943Sluigi strncpy(pipe.if_name, av[0], l); 228098943Sluigi pipe.if_name[l] = '\0'; 228198943Sluigi pipe.bandwidth = 0; 228298943Sluigi } else { 228398943Sluigi pipe.if_name[0] = '\0'; 228498943Sluigi pipe.bandwidth = strtoul(av[0], &end, 0); 228598943Sluigi if (*end == 'K' || *end == 'k') { 228698943Sluigi end++; 228798943Sluigi pipe.bandwidth *= 1000; 228898943Sluigi } else if (*end == 'M') { 228998943Sluigi end++; 229098943Sluigi pipe.bandwidth *= 1000000; 229198943Sluigi } 229298943Sluigi if (*end == 'B' || !strncmp(end, "by", 2)) 229398943Sluigi pipe.bandwidth *= 8; 229498943Sluigi if (pipe.bandwidth < 0) 229598943Sluigi errx(EX_DATAERR, "bandwidth too large"); 229698943Sluigi } 229798943Sluigi ac--; av++; 229898943Sluigi break; 229998943Sluigi 230098943Sluigi case TOK_DELAY: 230198943Sluigi if (do_pipe != 1) 230298943Sluigi errx(EX_DATAERR, "delay only valid for pipes"); 230398943Sluigi NEED1("delay needs argument 0..10000ms\n"); 230498943Sluigi pipe.delay = strtoul(av[0], NULL, 0); 230598943Sluigi ac--; av++; 230698943Sluigi break; 230798943Sluigi 230898943Sluigi case TOK_WEIGHT: 230998943Sluigi if (do_pipe == 1) 231098943Sluigi errx(EX_DATAERR,"weight only valid for queues"); 231198943Sluigi NEED1("weight needs argument 0..100\n"); 231298943Sluigi pipe.fs.weight = strtoul(av[0], &end, 0); 231398943Sluigi ac--; av++; 231498943Sluigi break; 231598943Sluigi 231698943Sluigi case TOK_PIPE: 231798943Sluigi if (do_pipe == 1) 231898943Sluigi errx(EX_DATAERR,"pipe only valid for queues"); 231998943Sluigi NEED1("pipe needs pipe_number\n"); 232098943Sluigi pipe.fs.parent_nr = strtoul(av[0], &end, 0); 232198943Sluigi ac--; av++; 232298943Sluigi break; 232398943Sluigi 232498943Sluigi default: 232598943Sluigi errx(EX_DATAERR, "unrecognised option ``%s''", *av); 232698943Sluigi } 232798943Sluigi } 232898943Sluigi if (do_pipe == 1) { 232998943Sluigi if (pipe.pipe_nr == 0) 233098943Sluigi errx(EX_DATAERR, "pipe_nr must be > 0"); 233198943Sluigi if (pipe.delay > 10000) 233298943Sluigi errx(EX_DATAERR, "delay must be < 10000"); 233398943Sluigi } else { /* do_pipe == 2, queue */ 233498943Sluigi if (pipe.fs.parent_nr == 0) 233598943Sluigi errx(EX_DATAERR, "pipe must be > 0"); 233698943Sluigi if (pipe.fs.weight >100) 233798943Sluigi errx(EX_DATAERR, "weight must be <= 100"); 233898943Sluigi } 233998943Sluigi if (pipe.fs.flags_fs & DN_QSIZE_IS_BYTES) { 234098943Sluigi if (pipe.fs.qsize > 1024*1024) 234198943Sluigi errx(EX_DATAERR, "queue size must be < 1MB"); 234298943Sluigi } else { 234398943Sluigi if (pipe.fs.qsize > 100) 234498943Sluigi errx(EX_DATAERR, "2 <= queue size <= 100"); 234598943Sluigi } 234698943Sluigi if (pipe.fs.flags_fs & DN_IS_RED) { 234798943Sluigi size_t len; 234898943Sluigi int lookup_depth, avg_pkt_size; 234998943Sluigi double s, idle, weight, w_q; 235098943Sluigi struct clockinfo clock; 235198943Sluigi int t; 235298943Sluigi 235398943Sluigi if (pipe.fs.min_th >= pipe.fs.max_th) 235498943Sluigi errx(EX_DATAERR, "min_th %d must be < than max_th %d", 235598943Sluigi pipe.fs.min_th, pipe.fs.max_th); 235698943Sluigi if (pipe.fs.max_th == 0) 235798943Sluigi errx(EX_DATAERR, "max_th must be > 0"); 235898943Sluigi 235998943Sluigi len = sizeof(int); 236098943Sluigi if (sysctlbyname("net.inet.ip.dummynet.red_lookup_depth", 236198943Sluigi &lookup_depth, &len, NULL, 0) == -1) 236298943Sluigi 236398943Sluigi errx(1, "sysctlbyname(\"%s\")", 236498943Sluigi "net.inet.ip.dummynet.red_lookup_depth"); 236598943Sluigi if (lookup_depth == 0) 236698943Sluigi errx(EX_DATAERR, "net.inet.ip.dummynet.red_lookup_depth" 236798943Sluigi " must be greater than zero"); 236898943Sluigi 236998943Sluigi len = sizeof(int); 237098943Sluigi if (sysctlbyname("net.inet.ip.dummynet.red_avg_pkt_size", 237198943Sluigi &avg_pkt_size, &len, NULL, 0) == -1) 237298943Sluigi 237398943Sluigi errx(1, "sysctlbyname(\"%s\")", 237498943Sluigi "net.inet.ip.dummynet.red_avg_pkt_size"); 237598943Sluigi if (avg_pkt_size == 0) 237698943Sluigi errx(EX_DATAERR, 237798943Sluigi "net.inet.ip.dummynet.red_avg_pkt_size must" 237898943Sluigi " be greater than zero"); 237998943Sluigi 238098943Sluigi len = sizeof(struct clockinfo); 238198943Sluigi if (sysctlbyname("kern.clockrate", &clock, &len, NULL, 0) == -1) 238298943Sluigi errx(1, "sysctlbyname(\"%s\")", "kern.clockrate"); 238398943Sluigi 238498943Sluigi /* 238598943Sluigi * Ticks needed for sending a medium-sized packet. 238698943Sluigi * Unfortunately, when we are configuring a WF2Q+ queue, we 238798943Sluigi * do not have bandwidth information, because that is stored 238898943Sluigi * in the parent pipe, and also we have multiple queues 238998943Sluigi * competing for it. So we set s=0, which is not very 239098943Sluigi * correct. But on the other hand, why do we want RED with 239198943Sluigi * WF2Q+ ? 239298943Sluigi */ 239398943Sluigi if (pipe.bandwidth==0) /* this is a WF2Q+ queue */ 239498943Sluigi s = 0; 239598943Sluigi else 239698943Sluigi s = clock.hz * avg_pkt_size * 8 / pipe.bandwidth; 239798943Sluigi 239898943Sluigi /* 239998943Sluigi * max idle time (in ticks) before avg queue size becomes 0. 240098943Sluigi * NOTA: (3/w_q) is approx the value x so that 240198943Sluigi * (1-w_q)^x < 10^-3. 240298943Sluigi */ 240398943Sluigi w_q = ((double)pipe.fs.w_q) / (1 << SCALE_RED); 240498943Sluigi idle = s * 3. / w_q; 240598943Sluigi pipe.fs.lookup_step = (int)idle / lookup_depth; 240698943Sluigi if (!pipe.fs.lookup_step) 240798943Sluigi pipe.fs.lookup_step = 1; 240898943Sluigi weight = 1 - w_q; 240998943Sluigi for (t = pipe.fs.lookup_step; t > 0; --t) 241098943Sluigi weight *= weight; 241198943Sluigi pipe.fs.lookup_weight = (int)(weight * (1 << SCALE_RED)); 241298943Sluigi } 241398943Sluigi i = setsockopt(s, IPPROTO_IP, IP_DUMMYNET_CONFIGURE, &pipe, 241498943Sluigi sizeof pipe); 241598943Sluigi if (i) 241698943Sluigi err(1, "setsockopt(%s)", "IP_DUMMYNET_CONFIGURE"); 241798943Sluigi} 241898943Sluigi 241998943Sluigistatic void 242098943Sluigiget_mac_addr_mask(char *p, u_char *addr, u_char *mask) 242198943Sluigi{ 242298943Sluigi int i, l; 242398943Sluigi 242498943Sluigi for (i=0; i<6; i++) 242598943Sluigi addr[i] = mask[i] = 0; 242698943Sluigi if (!strcmp(p, "any")) 242798943Sluigi return; 242898943Sluigi 242998943Sluigi for (i=0; *p && i<6;i++, p++) { 243098943Sluigi addr[i] = strtol(p, &p, 16); 243198943Sluigi if (*p != ':') /* we start with the mask */ 243298943Sluigi break; 243398943Sluigi } 243498943Sluigi if (*p == '/') { /* mask len */ 243598943Sluigi l = strtol(p+1, &p, 0); 243698943Sluigi for (i=0; l>0; l -=8, i++) 243798943Sluigi mask[i] = (l >=8) ? 0xff : (~0) << (8-l); 243898943Sluigi } else if (*p == '&') { /* mask */ 243998943Sluigi for (i=0, p++; *p && i<6;i++, p++) { 244098943Sluigi mask[i] = strtol(p, &p, 16); 244198943Sluigi if (*p != ':') 244298943Sluigi break; 244398943Sluigi } 244498943Sluigi } else if (*p == '\0') { 244598943Sluigi for (i=0; i<6; i++) 244698943Sluigi mask[i] = 0xff; 244798943Sluigi } 244898943Sluigi for (i=0; i<6; i++) 244998943Sluigi addr[i] &= mask[i]; 245098943Sluigi} 245198943Sluigi 245298943Sluigi/* 245398943Sluigi * helper function, updates the pointer to cmd with the length 245498943Sluigi * of the current command, and also cleans up the first word of 245598943Sluigi * the new command in case it has been clobbered before. 245698943Sluigi */ 245798943Sluigistatic ipfw_insn * 245898943Sluiginext_cmd(ipfw_insn *cmd) 245998943Sluigi{ 246098943Sluigi cmd += F_LEN(cmd); 246198943Sluigi bzero(cmd, sizeof(*cmd)); 246298943Sluigi return cmd; 246398943Sluigi} 246498943Sluigi 246598943Sluigi/* 246698943Sluigi * A function to fill simple commands of size 1. 246798943Sluigi * Existing flags are preserved. 246898943Sluigi */ 246998943Sluigistatic void 247098943Sluigifill_cmd(ipfw_insn *cmd, enum ipfw_opcodes opcode, int flags, u_int16_t arg) 247198943Sluigi{ 247298943Sluigi cmd->opcode = opcode; 247398943Sluigi cmd->len = ((cmd->len | flags) & (F_NOT | F_OR)) | 1; 247498943Sluigi cmd->arg1 = arg; 247598943Sluigi} 247698943Sluigi 247798943Sluigi/* 247898943Sluigi * Fetch and add the MAC address and type, with masks. This generates one or 247998943Sluigi * two microinstructions, and returns the pointer to the last one. 248098943Sluigi */ 248198943Sluigistatic ipfw_insn * 248298943Sluigiadd_mac(ipfw_insn *cmd, int ac, char *av[]) 248398943Sluigi{ 2484102087Sluigi ipfw_insn_mac *mac; 248598943Sluigi 2486102087Sluigi if (ac < 2) 2487102098Sluigi errx(EX_DATAERR, "MAC dst src"); 248898943Sluigi 248998943Sluigi cmd->opcode = O_MACADDR2; 249098943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | F_INSN_SIZE(ipfw_insn_mac); 249198943Sluigi 249298943Sluigi mac = (ipfw_insn_mac *)cmd; 2493101978Sluigi get_mac_addr_mask(av[0], mac->addr, mac->mask); /* dst */ 249498943Sluigi get_mac_addr_mask(av[1], &(mac->addr[6]), &(mac->mask[6])); /* src */ 2495102087Sluigi return cmd; 2496102087Sluigi} 249798943Sluigi 2498102087Sluigistatic ipfw_insn * 2499102087Sluigiadd_mactype(ipfw_insn *cmd, int ac, char *av) 2500102087Sluigi{ 2501102087Sluigi if (ac < 1) 2502102087Sluigi errx(EX_DATAERR, "missing MAC type"); 2503102087Sluigi if (strcmp(av, "any") != 0) { /* we have a non-null type */ 2504102087Sluigi fill_newports((ipfw_insn_u16 *)cmd, av, IPPROTO_ETHERTYPE); 250598943Sluigi cmd->opcode = O_MAC_TYPE; 2506102087Sluigi return cmd; 2507102087Sluigi } else 2508102087Sluigi return NULL; 2509102087Sluigi} 251098943Sluigi 2511102087Sluigistatic ipfw_insn * 2512102087Sluigiadd_proto(ipfw_insn *cmd, char *av) 2513102087Sluigi{ 2514102087Sluigi struct protoent *pe; 2515102087Sluigi u_char proto = 0; 2516102087Sluigi 2517102087Sluigi if (!strncmp(av, "all", strlen(av))) 2518102087Sluigi ; /* same as "ip" */ 2519102087Sluigi else if ((proto = atoi(av)) > 0) 2520102087Sluigi ; /* all done! */ 2521102087Sluigi else if ((pe = getprotobyname(av)) != NULL) 2522102087Sluigi proto = pe->p_proto; 2523102087Sluigi else 2524102098Sluigi return NULL; 2525102087Sluigi if (proto != IPPROTO_IP) 2526102087Sluigi fill_cmd(cmd, O_PROTO, 0, proto); 252798943Sluigi return cmd; 252898943Sluigi} 252998943Sluigi 2530102087Sluigistatic ipfw_insn * 2531102087Sluigiadd_srcip(ipfw_insn *cmd, char *av) 2532102087Sluigi{ 2533102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2534102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2535102087Sluigi cmd->opcode = O_IP_SRC_SET; 2536102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2537102087Sluigi cmd->opcode = O_IP_SRC_ME; 2538102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2539102087Sluigi cmd->opcode = O_IP_SRC; 2540102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_ip)) /* addr/mask */ 2541102087Sluigi cmd->opcode = O_IP_SRC_MASK; 2542102087Sluigi return cmd; 2543102087Sluigi} 2544102087Sluigi 2545102087Sluigistatic ipfw_insn * 2546102087Sluigiadd_dstip(ipfw_insn *cmd, char *av) 2547102087Sluigi{ 2548102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2549102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2550102087Sluigi ; 2551102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2552102087Sluigi cmd->opcode = O_IP_DST_ME; 2553102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2554102087Sluigi cmd->opcode = O_IP_DST; 2555102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_ip)) /* addr/mask */ 2556102087Sluigi cmd->opcode = O_IP_DST_MASK; 2557102087Sluigi return cmd; 2558102087Sluigi} 2559102087Sluigi 2560102087Sluigistatic ipfw_insn * 2561102087Sluigiadd_ports(ipfw_insn *cmd, char *av, u_char proto, int opcode) 2562102087Sluigi{ 2563102087Sluigi if (!strncmp(av, "any", strlen(av))) { 2564102087Sluigi return NULL; 2565102087Sluigi } else if (fill_newports((ipfw_insn_u16 *)cmd, av, proto)) { 2566102087Sluigi /* XXX todo: check that we have a protocol with ports */ 2567102087Sluigi cmd->opcode = opcode; 2568102087Sluigi return cmd; 2569102087Sluigi } 2570102087Sluigi return NULL; 2571102087Sluigi} 2572102087Sluigi 257398943Sluigi/* 257498943Sluigi * Parse arguments and assemble the microinstructions which make up a rule. 257598943Sluigi * Rules are added into the 'rulebuf' and then copied in the correct order 257698943Sluigi * into the actual rule. 257798943Sluigi * 257898943Sluigi * The syntax for a rule starts with the action, followed by an 257998943Sluigi * optional log action, and the various match patterns. 2580108533Sschweikh * In the assembled microcode, the first opcode must be an O_PROBE_STATE 258198943Sluigi * (generated if the rule includes a keep-state option), then the 258298943Sluigi * various match patterns, the "log" action, and the actual action. 2583106505Smaxim * 258498943Sluigi */ 258598943Sluigistatic void 258698943Sluigiadd(int ac, char *av[]) 258798943Sluigi{ 258898943Sluigi /* 258998943Sluigi * rules are added into the 'rulebuf' and then copied in 259098943Sluigi * the correct order into the actual rule. 259198943Sluigi * Some things that need to go out of order (prob, action etc.) 259298943Sluigi * go into actbuf[]. 259398943Sluigi */ 259498943Sluigi static u_int32_t rulebuf[255], actbuf[255], cmdbuf[255]; 259598943Sluigi 259698943Sluigi ipfw_insn *src, *dst, *cmd, *action, *prev; 2597102087Sluigi ipfw_insn *first_cmd; /* first match pattern */ 259898943Sluigi 259998943Sluigi struct ip_fw *rule; 260098943Sluigi 260198943Sluigi /* 260298943Sluigi * various flags used to record that we entered some fields. 260398943Sluigi */ 2604101116Sluigi ipfw_insn *have_state = NULL; /* check-state or keep-state */ 260598943Sluigi 260698943Sluigi int i; 260798943Sluigi 260898943Sluigi int open_par = 0; /* open parenthesis ( */ 260998943Sluigi 261098943Sluigi /* proto is here because it is used to fetch ports */ 261198943Sluigi u_char proto = IPPROTO_IP; /* default protocol */ 261298943Sluigi 2613107289Sluigi double match_prob = 1; /* match probability, default is always match */ 2614107289Sluigi 261598943Sluigi bzero(actbuf, sizeof(actbuf)); /* actions go here */ 261698943Sluigi bzero(cmdbuf, sizeof(cmdbuf)); 261798943Sluigi bzero(rulebuf, sizeof(rulebuf)); 261898943Sluigi 261998943Sluigi rule = (struct ip_fw *)rulebuf; 262098943Sluigi cmd = (ipfw_insn *)cmdbuf; 262198943Sluigi action = (ipfw_insn *)actbuf; 262298943Sluigi 262398943Sluigi av++; ac--; 262498943Sluigi 262598943Sluigi /* [rule N] -- Rule number optional */ 262698943Sluigi if (ac && isdigit(**av)) { 262798943Sluigi rule->rulenum = atoi(*av); 262898943Sluigi av++; 262998943Sluigi ac--; 263098943Sluigi } 263198943Sluigi 2632101628Sluigi /* [set N] -- set number (0..30), optional */ 2633101628Sluigi if (ac > 1 && !strncmp(*av, "set", strlen(*av))) { 2634101628Sluigi int set = strtoul(av[1], NULL, 10); 2635101628Sluigi if (set < 0 || set > 30) 2636101628Sluigi errx(EX_DATAERR, "illegal set %s", av[1]); 2637101628Sluigi rule->set = set; 2638101628Sluigi av += 2; ac -= 2; 2639101628Sluigi } 2640101628Sluigi 264198943Sluigi /* [prob D] -- match probability, optional */ 264298943Sluigi if (ac > 1 && !strncmp(*av, "prob", strlen(*av))) { 2643107289Sluigi match_prob = strtod(av[1], NULL); 264498943Sluigi 2645107289Sluigi if (match_prob <= 0 || match_prob > 1) 264698943Sluigi errx(EX_DATAERR, "illegal match prob. %s", av[1]); 264798943Sluigi av += 2; ac -= 2; 264898943Sluigi } 264998943Sluigi 265098943Sluigi /* action -- mandatory */ 265198943Sluigi NEED1("missing action"); 265298943Sluigi i = match_token(rule_actions, *av); 265398943Sluigi ac--; av++; 265498943Sluigi action->len = 1; /* default */ 265598943Sluigi switch(i) { 265698943Sluigi case TOK_CHECKSTATE: 2657101116Sluigi have_state = action; 265898943Sluigi action->opcode = O_CHECK_STATE; 265998943Sluigi break; 266098943Sluigi 266198943Sluigi case TOK_ACCEPT: 266298943Sluigi action->opcode = O_ACCEPT; 266398943Sluigi break; 266498943Sluigi 266598943Sluigi case TOK_DENY: 266698943Sluigi action->opcode = O_DENY; 266799475Sluigi action->arg1 = 0; 266898943Sluigi break; 266998943Sluigi 267099475Sluigi case TOK_REJECT: 267199475Sluigi action->opcode = O_REJECT; 267299475Sluigi action->arg1 = ICMP_UNREACH_HOST; 267399475Sluigi break; 267499475Sluigi 267599475Sluigi case TOK_RESET: 267699475Sluigi action->opcode = O_REJECT; 267799475Sluigi action->arg1 = ICMP_REJECT_RST; 267899475Sluigi break; 267999475Sluigi 268099475Sluigi case TOK_UNREACH: 268199475Sluigi action->opcode = O_REJECT; 268299475Sluigi NEED1("missing reject code"); 268399475Sluigi fill_reject_code(&action->arg1, *av); 268499475Sluigi ac--; av++; 268599475Sluigi break; 268699475Sluigi 268798943Sluigi case TOK_COUNT: 268898943Sluigi action->opcode = O_COUNT; 268998943Sluigi break; 269098943Sluigi 269198943Sluigi case TOK_QUEUE: 269298943Sluigi case TOK_PIPE: 269398943Sluigi action->len = F_INSN_SIZE(ipfw_insn_pipe); 269498943Sluigi case TOK_SKIPTO: 269598943Sluigi if (i == TOK_QUEUE) 269698943Sluigi action->opcode = O_QUEUE; 269798943Sluigi else if (i == TOK_PIPE) 269898943Sluigi action->opcode = O_PIPE; 269998943Sluigi else if (i == TOK_SKIPTO) 270098943Sluigi action->opcode = O_SKIPTO; 270198943Sluigi NEED1("missing skipto/pipe/queue number"); 270298943Sluigi action->arg1 = strtoul(*av, NULL, 10); 270398943Sluigi av++; ac--; 270498943Sluigi break; 270598943Sluigi 270698943Sluigi case TOK_DIVERT: 270798943Sluigi case TOK_TEE: 270898943Sluigi action->opcode = (i == TOK_DIVERT) ? O_DIVERT : O_TEE; 270998943Sluigi NEED1("missing divert/tee port"); 271098943Sluigi action->arg1 = strtoul(*av, NULL, 0); 271198943Sluigi if (action->arg1 == 0) { 271298943Sluigi struct servent *s; 271398943Sluigi setservent(1); 271498943Sluigi s = getservbyname(av[0], "divert"); 271598943Sluigi if (s != NULL) 271698943Sluigi action->arg1 = ntohs(s->s_port); 271798943Sluigi else 271898943Sluigi errx(EX_DATAERR, "illegal divert/tee port"); 271998943Sluigi } 272098943Sluigi ac--; av++; 272198943Sluigi break; 272298943Sluigi 272398943Sluigi case TOK_FORWARD: { 272498943Sluigi ipfw_insn_sa *p = (ipfw_insn_sa *)action; 272598943Sluigi char *s, *end; 272698943Sluigi 272798943Sluigi NEED1("missing forward address[:port]"); 272898943Sluigi 272998943Sluigi action->opcode = O_FORWARD_IP; 273098943Sluigi action->len = F_INSN_SIZE(ipfw_insn_sa); 273198943Sluigi 273298943Sluigi p->sa.sin_len = sizeof(struct sockaddr_in); 273398943Sluigi p->sa.sin_family = AF_INET; 273498943Sluigi p->sa.sin_port = 0; 273598943Sluigi /* 273698943Sluigi * locate the address-port separator (':' or ',') 273798943Sluigi */ 273898943Sluigi s = strchr(*av, ':'); 273998943Sluigi if (s == NULL) 274098943Sluigi s = strchr(*av, ','); 274198943Sluigi if (s != NULL) { 274298943Sluigi *(s++) = '\0'; 274398943Sluigi i = strtoport(s, &end, 0 /* base */, 0 /* proto */); 274498943Sluigi if (s == end) 274598943Sluigi errx(EX_DATAERR, 274698943Sluigi "illegal forwarding port ``%s''", s); 2747103241Sluigi p->sa.sin_port = (u_short)i; 274898943Sluigi } 274998943Sluigi lookup_host(*av, &(p->sa.sin_addr)); 275098943Sluigi } 275198943Sluigi ac--; av++; 275298943Sluigi break; 275398943Sluigi 275498943Sluigi default: 2755102087Sluigi errx(EX_DATAERR, "invalid action %s\n", av[-1]); 275698943Sluigi } 275798943Sluigi action = next_cmd(action); 275898943Sluigi 275998943Sluigi /* 276098943Sluigi * [log [logamount N]] -- log, optional 276198943Sluigi * 276298943Sluigi * If exists, it goes first in the cmdbuf, but then it is 276398943Sluigi * skipped in the copy section to the end of the buffer. 276498943Sluigi */ 276598943Sluigi if (ac && !strncmp(*av, "log", strlen(*av))) { 276698943Sluigi ipfw_insn_log *c = (ipfw_insn_log *)cmd; 276798943Sluigi 276898943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_log); 276998943Sluigi cmd->opcode = O_LOG; 277098943Sluigi av++; ac--; 277198943Sluigi if (ac && !strncmp(*av, "logamount", strlen(*av))) { 277298943Sluigi ac--; av++; 277398943Sluigi NEED1("logamount requires argument"); 277498943Sluigi c->max_log = atoi(*av); 277598943Sluigi if (c->max_log < 0) 277698943Sluigi errx(EX_DATAERR, "logamount must be positive"); 277798943Sluigi ac--; av++; 277898943Sluigi } 277998943Sluigi cmd = next_cmd(cmd); 278098943Sluigi } 278198943Sluigi 2782101116Sluigi if (have_state) /* must be a check-state, we are done */ 278398943Sluigi goto done; 278498943Sluigi 278598943Sluigi#define OR_START(target) \ 278698943Sluigi if (ac && (*av[0] == '(' || *av[0] == '{')) { \ 278798943Sluigi if (open_par) \ 278898943Sluigi errx(EX_USAGE, "nested \"(\" not allowed\n"); \ 2789101641Sluigi prev = NULL; \ 279098943Sluigi open_par = 1; \ 279198943Sluigi if ( (av[0])[1] == '\0') { \ 279298943Sluigi ac--; av++; \ 279398943Sluigi } else \ 279498943Sluigi (*av)++; \ 279598943Sluigi } \ 279698943Sluigi target: \ 279798943Sluigi 279898943Sluigi 279998943Sluigi#define CLOSE_PAR \ 280098943Sluigi if (open_par) { \ 280198943Sluigi if (ac && ( \ 280298943Sluigi !strncmp(*av, ")", strlen(*av)) || \ 280398943Sluigi !strncmp(*av, "}", strlen(*av)) )) { \ 2804101641Sluigi prev = NULL; \ 280598943Sluigi open_par = 0; \ 280698943Sluigi ac--; av++; \ 280798943Sluigi } else \ 280898943Sluigi errx(EX_USAGE, "missing \")\"\n"); \ 280998943Sluigi } 2810106505Smaxim 281198943Sluigi#define NOT_BLOCK \ 281298943Sluigi if (ac && !strncmp(*av, "not", strlen(*av))) { \ 281398943Sluigi if (cmd->len & F_NOT) \ 281498943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); \ 281598943Sluigi cmd->len |= F_NOT; \ 281698943Sluigi ac--; av++; \ 281798943Sluigi } 281898943Sluigi 281998943Sluigi#define OR_BLOCK(target) \ 282098943Sluigi if (ac && !strncmp(*av, "or", strlen(*av))) { \ 282198943Sluigi if (prev == NULL || open_par == 0) \ 282298943Sluigi errx(EX_DATAERR, "invalid OR block"); \ 282398943Sluigi prev->len |= F_OR; \ 282498943Sluigi ac--; av++; \ 282598943Sluigi goto target; \ 282698943Sluigi } \ 282798943Sluigi CLOSE_PAR; 282898943Sluigi 2829102087Sluigi first_cmd = cmd; 2830102098Sluigi 2831102098Sluigi#if 0 283298943Sluigi /* 2833102087Sluigi * MAC addresses, optional. 2834102087Sluigi * If we have this, we skip the part "proto from src to dst" 2835102087Sluigi * and jump straight to the option parsing. 2836102087Sluigi */ 2837102087Sluigi NOT_BLOCK; 2838102087Sluigi NEED1("missing protocol"); 2839102087Sluigi if (!strncmp(*av, "MAC", strlen(*av)) || 2840102087Sluigi !strncmp(*av, "mac", strlen(*av))) { 2841102087Sluigi ac--; av++; /* the "MAC" keyword */ 2842102087Sluigi add_mac(cmd, ac, av); /* exits in case of errors */ 2843102087Sluigi cmd = next_cmd(cmd); 2844102087Sluigi ac -= 2; av += 2; /* dst-mac and src-mac */ 2845102087Sluigi NOT_BLOCK; 2846102087Sluigi NEED1("missing mac type"); 2847102087Sluigi if (add_mactype(cmd, ac, av[0])) 2848102087Sluigi cmd = next_cmd(cmd); 2849102087Sluigi ac--; av++; /* any or mac-type */ 2850102087Sluigi goto read_options; 2851102087Sluigi } 2852102098Sluigi#endif 2853102087Sluigi 2854102087Sluigi /* 285598943Sluigi * protocol, mandatory 285698943Sluigi */ 285798943Sluigi OR_START(get_proto); 285898943Sluigi NOT_BLOCK; 285998943Sluigi NEED1("missing protocol"); 2860102087Sluigi if (add_proto(cmd, *av)) { 2861102087Sluigi av++; ac--; 2862102087Sluigi if (F_LEN(cmd) == 0) /* plain IP */ 2863102087Sluigi proto = 0; 2864102087Sluigi else { 2865102087Sluigi proto = cmd->arg1; 2866102087Sluigi prev = cmd; 2867102087Sluigi cmd = next_cmd(cmd); 2868102087Sluigi } 2869102098Sluigi } else if (first_cmd != cmd) { 2870116438Smaxim errx(EX_DATAERR, "invalid protocol ``%s''", *av); 2871102098Sluigi } else 2872102098Sluigi goto read_options; 287398943Sluigi OR_BLOCK(get_proto); 287498943Sluigi 287598943Sluigi /* 2876102087Sluigi * "from", mandatory 287798943Sluigi */ 2878102087Sluigi if (!ac || strncmp(*av, "from", strlen(*av))) 287998943Sluigi errx(EX_USAGE, "missing ``from''"); 288098943Sluigi ac--; av++; 288198943Sluigi 288298943Sluigi /* 288398943Sluigi * source IP, mandatory 288498943Sluigi */ 288598943Sluigi OR_START(source_ip); 288698943Sluigi NOT_BLOCK; /* optional "not" */ 288798943Sluigi NEED1("missing source address"); 2888102087Sluigi if (add_srcip(cmd, *av)) { 2889102087Sluigi ac--; av++; 2890102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 2891102087Sluigi prev = cmd; 2892102087Sluigi cmd = next_cmd(cmd); 2893102087Sluigi } 2894102087Sluigi } 289598943Sluigi OR_BLOCK(source_ip); 289698943Sluigi 289798943Sluigi /* 289898943Sluigi * source ports, optional 289998943Sluigi */ 290098943Sluigi NOT_BLOCK; /* optional "not" */ 2901101641Sluigi if (ac) { 2902102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 2903102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 2904102087Sluigi ac--; av++; 2905102087Sluigi if (F_LEN(cmd) != 0) 2906102087Sluigi cmd = next_cmd(cmd); 2907101641Sluigi } 290898943Sluigi } 290998943Sluigi 291098943Sluigi /* 2911102087Sluigi * "to", mandatory 291298943Sluigi */ 2913102087Sluigi if (!ac || strncmp(*av, "to", strlen(*av))) 291498943Sluigi errx(EX_USAGE, "missing ``to''"); 291598943Sluigi av++; ac--; 291698943Sluigi 291798943Sluigi /* 291898943Sluigi * destination, mandatory 291998943Sluigi */ 292098943Sluigi OR_START(dest_ip); 292198943Sluigi NOT_BLOCK; /* optional "not" */ 292298943Sluigi NEED1("missing dst address"); 2923102087Sluigi if (add_dstip(cmd, *av)) { 2924102087Sluigi ac--; av++; 2925102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 2926102087Sluigi prev = cmd; 2927102087Sluigi cmd = next_cmd(cmd); 2928102087Sluigi } 2929102087Sluigi } 293098943Sluigi OR_BLOCK(dest_ip); 293198943Sluigi 293298943Sluigi /* 293398943Sluigi * dest. ports, optional 293498943Sluigi */ 293598943Sluigi NOT_BLOCK; /* optional "not" */ 2936101641Sluigi if (ac) { 2937102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 2938102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 2939102087Sluigi ac--; av++; 2940102087Sluigi if (F_LEN(cmd) != 0) 2941102087Sluigi cmd = next_cmd(cmd); 2942101641Sluigi } 294398943Sluigi } 294498943Sluigi 294598943Sluigiread_options: 2946102087Sluigi if (ac && first_cmd == cmd) { 2947102087Sluigi /* 2948102087Sluigi * nothing specified so far, store in the rule to ease 2949102087Sluigi * printout later. 2950102087Sluigi */ 2951102087Sluigi rule->_pad = 1; 2952102087Sluigi } 295398943Sluigi prev = NULL; 295498943Sluigi while (ac) { 2955101641Sluigi char *s; 2956101641Sluigi ipfw_insn_u32 *cmd32; /* alias for cmd */ 295798943Sluigi 2958101641Sluigi s = *av; 2959101641Sluigi cmd32 = (ipfw_insn_u32 *)cmd; 2960101641Sluigi 296198943Sluigi if (*s == '!') { /* alternate syntax for NOT */ 296298943Sluigi if (cmd->len & F_NOT) 296398943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 296498943Sluigi cmd->len = F_NOT; 296598943Sluigi s++; 296698943Sluigi } 296798943Sluigi i = match_token(rule_options, s); 296898943Sluigi ac--; av++; 296998943Sluigi switch(i) { 297098943Sluigi case TOK_NOT: 297198943Sluigi if (cmd->len & F_NOT) 297298943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 297398943Sluigi cmd->len = F_NOT; 297498943Sluigi break; 297598943Sluigi 297698943Sluigi case TOK_OR: 2977101641Sluigi if (open_par == 0 || prev == NULL) 297898943Sluigi errx(EX_USAGE, "invalid \"or\" block\n"); 297998943Sluigi prev->len |= F_OR; 298098943Sluigi break; 2981101641Sluigi 2982101641Sluigi case TOK_STARTBRACE: 2983101641Sluigi if (open_par) 2984101641Sluigi errx(EX_USAGE, "+nested \"(\" not allowed\n"); 2985101641Sluigi open_par = 1; 2986101641Sluigi break; 2987101641Sluigi 2988101641Sluigi case TOK_ENDBRACE: 2989101641Sluigi if (!open_par) 2990101641Sluigi errx(EX_USAGE, "+missing \")\"\n"); 2991101641Sluigi open_par = 0; 2992102087Sluigi prev = NULL; 2993101641Sluigi break; 2994101641Sluigi 299598943Sluigi case TOK_IN: 299698943Sluigi fill_cmd(cmd, O_IN, 0, 0); 299798943Sluigi break; 299898943Sluigi 299998943Sluigi case TOK_OUT: 300098943Sluigi cmd->len ^= F_NOT; /* toggle F_NOT */ 300198943Sluigi fill_cmd(cmd, O_IN, 0, 0); 300298943Sluigi break; 300398943Sluigi 300498943Sluigi case TOK_FRAG: 300598943Sluigi fill_cmd(cmd, O_FRAG, 0, 0); 300698943Sluigi break; 300798943Sluigi 300898943Sluigi case TOK_LAYER2: 300998943Sluigi fill_cmd(cmd, O_LAYER2, 0, 0); 301098943Sluigi break; 301198943Sluigi 301298943Sluigi case TOK_XMIT: 301398943Sluigi case TOK_RECV: 301498943Sluigi case TOK_VIA: 301598943Sluigi NEED1("recv, xmit, via require interface name" 301698943Sluigi " or address"); 301798943Sluigi fill_iface((ipfw_insn_if *)cmd, av[0]); 301898943Sluigi ac--; av++; 301998943Sluigi if (F_LEN(cmd) == 0) /* not a valid address */ 302098943Sluigi break; 302198943Sluigi if (i == TOK_XMIT) 302298943Sluigi cmd->opcode = O_XMIT; 302398943Sluigi else if (i == TOK_RECV) 302498943Sluigi cmd->opcode = O_RECV; 302598943Sluigi else if (i == TOK_VIA) 302698943Sluigi cmd->opcode = O_VIA; 302798943Sluigi break; 302898943Sluigi 302999475Sluigi case TOK_ICMPTYPES: 303099475Sluigi NEED1("icmptypes requires list of types"); 303199475Sluigi fill_icmptypes((ipfw_insn_u32 *)cmd, *av); 303299475Sluigi av++; ac--; 303399475Sluigi break; 303499475Sluigi 303598943Sluigi case TOK_IPTTL: 303698943Sluigi NEED1("ipttl requires TTL"); 3037116690Sluigi if (strpbrk(*av, "-,")) { 3038116690Sluigi if (!add_ports(cmd, *av, 0, O_IPTTL)) 3039116690Sluigi errx(EX_DATAERR, "invalid ipttl %s", *av); 3040116690Sluigi } else 3041116690Sluigi fill_cmd(cmd, O_IPTTL, 0, strtoul(*av, NULL, 0)); 304298943Sluigi ac--; av++; 304398943Sluigi break; 304498943Sluigi 304598943Sluigi case TOK_IPID: 3046116690Sluigi NEED1("ipid requires id"); 3047116690Sluigi if (strpbrk(*av, "-,")) { 3048116690Sluigi if (!add_ports(cmd, *av, 0, O_IPID)) 3049116690Sluigi errx(EX_DATAERR, "invalid ipid %s", *av); 3050116690Sluigi } else 3051116690Sluigi fill_cmd(cmd, O_IPID, 0, strtoul(*av, NULL, 0)); 305298943Sluigi ac--; av++; 305398943Sluigi break; 305498943Sluigi 305598943Sluigi case TOK_IPLEN: 305698943Sluigi NEED1("iplen requires length"); 3057116690Sluigi if (strpbrk(*av, "-,")) { 3058116690Sluigi if (!add_ports(cmd, *av, 0, O_IPLEN)) 3059116690Sluigi errx(EX_DATAERR, "invalid ip len %s", *av); 3060116690Sluigi } else 3061116690Sluigi fill_cmd(cmd, O_IPLEN, 0, strtoul(*av, NULL, 0)); 306298943Sluigi ac--; av++; 306398943Sluigi break; 306498943Sluigi 306598943Sluigi case TOK_IPVER: 306698943Sluigi NEED1("ipver requires version"); 306798943Sluigi fill_cmd(cmd, O_IPVER, 0, strtoul(*av, NULL, 0)); 306898943Sluigi ac--; av++; 306998943Sluigi break; 307098943Sluigi 307199475Sluigi case TOK_IPPRECEDENCE: 307299475Sluigi NEED1("ipprecedence requires value"); 307399475Sluigi fill_cmd(cmd, O_IPPRECEDENCE, 0, 307499475Sluigi (strtoul(*av, NULL, 0) & 7) << 5); 307599475Sluigi ac--; av++; 307699475Sluigi break; 307799475Sluigi 307898943Sluigi case TOK_IPOPTS: 307998943Sluigi NEED1("missing argument for ipoptions"); 3080101116Sluigi fill_flags(cmd, O_IPOPT, f_ipopts, *av); 308198943Sluigi ac--; av++; 308298943Sluigi break; 308398943Sluigi 308499475Sluigi case TOK_IPTOS: 308599475Sluigi NEED1("missing argument for iptos"); 3086101116Sluigi fill_flags(cmd, O_IPTOS, f_iptos, *av); 308799475Sluigi ac--; av++; 308899475Sluigi break; 308999475Sluigi 309098943Sluigi case TOK_UID: 309198943Sluigi NEED1("uid requires argument"); 309298943Sluigi { 309398943Sluigi char *end; 309498943Sluigi uid_t uid; 309598943Sluigi struct passwd *pwd; 309698943Sluigi 309798943Sluigi cmd->opcode = O_UID; 309898943Sluigi uid = strtoul(*av, &end, 0); 309998943Sluigi pwd = (*end == '\0') ? getpwuid(uid) : getpwnam(*av); 310098943Sluigi if (pwd == NULL) 310198943Sluigi errx(EX_DATAERR, "uid \"%s\" nonexistent", *av); 3102106504Smaxim cmd32->d[0] = pwd->pw_uid; 310398943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 310498943Sluigi ac--; av++; 310598943Sluigi } 310698943Sluigi break; 310798943Sluigi 310898943Sluigi case TOK_GID: 310998943Sluigi NEED1("gid requires argument"); 311098943Sluigi { 311198943Sluigi char *end; 311298943Sluigi gid_t gid; 311398943Sluigi struct group *grp; 311498943Sluigi 311598943Sluigi cmd->opcode = O_GID; 311698943Sluigi gid = strtoul(*av, &end, 0); 311798943Sluigi grp = (*end == '\0') ? getgrgid(gid) : getgrnam(*av); 311898943Sluigi if (grp == NULL) 311998943Sluigi errx(EX_DATAERR, "gid \"%s\" nonexistent", *av); 3120106504Smaxim cmd32->d[0] = grp->gr_gid; 312198943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 312298943Sluigi ac--; av++; 312398943Sluigi } 312498943Sluigi break; 312598943Sluigi 312698943Sluigi case TOK_ESTAB: 312798943Sluigi fill_cmd(cmd, O_ESTAB, 0, 0); 312898943Sluigi break; 312998943Sluigi 313098943Sluigi case TOK_SETUP: 313198943Sluigi fill_cmd(cmd, O_TCPFLAGS, 0, 313298943Sluigi (TH_SYN) | ( (TH_ACK) & 0xff) <<8 ); 313398943Sluigi break; 313498943Sluigi 313598943Sluigi case TOK_TCPOPTS: 313698943Sluigi NEED1("missing argument for tcpoptions"); 313798943Sluigi fill_flags(cmd, O_TCPOPTS, f_tcpopts, *av); 313898943Sluigi ac--; av++; 313998943Sluigi break; 314098943Sluigi 314198943Sluigi case TOK_TCPSEQ: 314298943Sluigi case TOK_TCPACK: 314398943Sluigi NEED1("tcpseq/tcpack requires argument"); 314498943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 314598943Sluigi cmd->opcode = (i == TOK_TCPSEQ) ? O_TCPSEQ : O_TCPACK; 314698943Sluigi cmd32->d[0] = htonl(strtoul(*av, NULL, 0)); 314798943Sluigi ac--; av++; 314898943Sluigi break; 314998943Sluigi 315098943Sluigi case TOK_TCPWIN: 315198943Sluigi NEED1("tcpwin requires length"); 315298943Sluigi fill_cmd(cmd, O_TCPWIN, 0, 315398943Sluigi htons(strtoul(*av, NULL, 0))); 315498943Sluigi ac--; av++; 315598943Sluigi break; 315698943Sluigi 315798943Sluigi case TOK_TCPFLAGS: 315898943Sluigi NEED1("missing argument for tcpflags"); 315998943Sluigi cmd->opcode = O_TCPFLAGS; 316098943Sluigi fill_flags(cmd, O_TCPFLAGS, f_tcpflags, *av); 316198943Sluigi ac--; av++; 316298943Sluigi break; 316398943Sluigi 316498943Sluigi case TOK_KEEPSTATE: 3165101641Sluigi if (open_par) 3166101641Sluigi errx(EX_USAGE, "keep-state cannot be part " 3167101641Sluigi "of an or block"); 316899909Sluigi if (have_state) 3169101116Sluigi errx(EX_USAGE, "only one of keep-state " 317099909Sluigi "and limit is allowed"); 3171101116Sluigi have_state = cmd; 317298943Sluigi fill_cmd(cmd, O_KEEP_STATE, 0, 0); 317398943Sluigi break; 317498943Sluigi 317598943Sluigi case TOK_LIMIT: 3176101641Sluigi if (open_par) 3177101641Sluigi errx(EX_USAGE, "limit cannot be part " 3178101641Sluigi "of an or block"); 317999909Sluigi if (have_state) 3180101116Sluigi errx(EX_USAGE, "only one of keep-state " 318199909Sluigi "and limit is allowed"); 3182101641Sluigi NEED1("limit needs mask and # of connections"); 3183101116Sluigi have_state = cmd; 318498943Sluigi { 318598943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 318698943Sluigi 318798943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_limit); 318898943Sluigi cmd->opcode = O_LIMIT; 318998943Sluigi c->limit_mask = 0; 319098943Sluigi c->conn_limit = 0; 319198943Sluigi for (; ac >1 ;) { 319298943Sluigi int val; 319398943Sluigi 319498943Sluigi val = match_token(limit_masks, *av); 319598943Sluigi if (val <= 0) 319698943Sluigi break; 319798943Sluigi c->limit_mask |= val; 319898943Sluigi ac--; av++; 319998943Sluigi } 320098943Sluigi c->conn_limit = atoi(*av); 320198943Sluigi if (c->conn_limit == 0) 320298943Sluigi errx(EX_USAGE, "limit: limit must be >0"); 320398943Sluigi if (c->limit_mask == 0) 320498943Sluigi errx(EX_USAGE, "missing limit mask"); 320598943Sluigi ac--; av++; 320698943Sluigi } 320798943Sluigi break; 320898943Sluigi 3209102087Sluigi case TOK_PROTO: 3210102087Sluigi NEED1("missing protocol"); 3211102087Sluigi if (add_proto(cmd, *av)) { 3212102087Sluigi proto = cmd->arg1; 3213102087Sluigi ac--; av++; 3214102098Sluigi } else 3215116438Smaxim errx(EX_DATAERR, "invalid protocol ``%s''", 3216116438Smaxim *av); 3217102087Sluigi break; 3218106505Smaxim 3219102087Sluigi case TOK_SRCIP: 3220102087Sluigi NEED1("missing source IP"); 3221102087Sluigi if (add_srcip(cmd, *av)) { 3222102087Sluigi ac--; av++; 3223102087Sluigi } 3224102087Sluigi break; 3225102087Sluigi 3226102087Sluigi case TOK_DSTIP: 3227102087Sluigi NEED1("missing destination IP"); 3228102087Sluigi if (add_dstip(cmd, *av)) { 3229102087Sluigi ac--; av++; 3230102087Sluigi } 3231102087Sluigi break; 3232102087Sluigi 3233102087Sluigi case TOK_SRCPORT: 3234102087Sluigi NEED1("missing source port"); 3235102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 3236102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 3237102087Sluigi ac--; av++; 3238102087Sluigi } else 3239102087Sluigi errx(EX_DATAERR, "invalid source port %s", *av); 3240102087Sluigi break; 3241102087Sluigi 3242102087Sluigi case TOK_DSTPORT: 3243102087Sluigi NEED1("missing destination port"); 3244102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 3245102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 3246102087Sluigi ac--; av++; 3247102087Sluigi } else 3248102087Sluigi errx(EX_DATAERR, "invalid destination port %s", 3249102087Sluigi *av); 3250102087Sluigi break; 3251102087Sluigi 3252102087Sluigi case TOK_MAC: 3253102087Sluigi if (ac < 2) 3254102087Sluigi errx(EX_USAGE, "MAC dst-mac src-mac"); 3255102087Sluigi if (add_mac(cmd, ac, av)) { 3256102087Sluigi ac -= 2; av += 2; 3257102087Sluigi } 3258102087Sluigi break; 3259102087Sluigi 3260102087Sluigi case TOK_MACTYPE: 3261102087Sluigi NEED1("missing mac type"); 3262102087Sluigi if (!add_mactype(cmd, ac, *av)) 3263116438Smaxim errx(EX_DATAERR, "invalid mac type %s", *av); 3264102087Sluigi ac--; av++; 3265102087Sluigi break; 3266102087Sluigi 3267112250Scjc case TOK_VERREVPATH: 3268112250Scjc fill_cmd(cmd, O_VERREVPATH, 0, 0); 3269112250Scjc break; 3270112250Scjc 327198943Sluigi default: 327298943Sluigi errx(EX_USAGE, "unrecognised option [%d] %s\n", i, s); 327398943Sluigi } 327498943Sluigi if (F_LEN(cmd) > 0) { /* prepare to advance */ 327598943Sluigi prev = cmd; 327698943Sluigi cmd = next_cmd(cmd); 327798943Sluigi } 327898943Sluigi } 327998943Sluigi 328098943Sluigidone: 328198943Sluigi /* 328298943Sluigi * Now copy stuff into the rule. 328398943Sluigi * If we have a keep-state option, the first instruction 328498943Sluigi * must be a PROBE_STATE (which is generated here). 328598943Sluigi * If we have a LOG option, it was stored as the first command, 328698943Sluigi * and now must be moved to the top of the action part. 328798943Sluigi */ 328898943Sluigi dst = (ipfw_insn *)rule->cmd; 328998943Sluigi 329098943Sluigi /* 3291107289Sluigi * First thing to write into the command stream is the match probability. 3292107289Sluigi */ 3293107289Sluigi if (match_prob != 1) { /* 1 means always match */ 3294107289Sluigi dst->opcode = O_PROB; 3295107289Sluigi dst->len = 2; 3296107289Sluigi *((int32_t *)(dst+1)) = (int32_t)(match_prob * 0x7fffffff); 3297107289Sluigi dst += dst->len; 3298107289Sluigi } 3299107289Sluigi 3300107289Sluigi /* 330198943Sluigi * generate O_PROBE_STATE if necessary 330298943Sluigi */ 3303101116Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 330498943Sluigi fill_cmd(dst, O_PROBE_STATE, 0, 0); 330598943Sluigi dst = next_cmd(dst); 330698943Sluigi } 330798943Sluigi /* 3308101116Sluigi * copy all commands but O_LOG, O_KEEP_STATE, O_LIMIT 330998943Sluigi */ 331098943Sluigi for (src = (ipfw_insn *)cmdbuf; src != cmd; src += i) { 331198943Sluigi i = F_LEN(src); 331298943Sluigi 3313101116Sluigi switch (src->opcode) { 3314101116Sluigi case O_LOG: 3315101116Sluigi case O_KEEP_STATE: 3316101116Sluigi case O_LIMIT: 3317101116Sluigi break; 3318101116Sluigi default: 331998943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 332098943Sluigi dst += i; 332198943Sluigi } 332298943Sluigi } 332398943Sluigi 332498943Sluigi /* 3325101116Sluigi * put back the have_state command as last opcode 3326101116Sluigi */ 3327101295Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 3328101116Sluigi i = F_LEN(have_state); 3329101116Sluigi bcopy(have_state, dst, i * sizeof(u_int32_t)); 3330101116Sluigi dst += i; 3331101116Sluigi } 3332101116Sluigi /* 333398943Sluigi * start action section 333498943Sluigi */ 333598943Sluigi rule->act_ofs = dst - rule->cmd; 333698943Sluigi 333798943Sluigi /* 333898943Sluigi * put back O_LOG if necessary 333998943Sluigi */ 334098943Sluigi src = (ipfw_insn *)cmdbuf; 334198943Sluigi if ( src->opcode == O_LOG ) { 334298943Sluigi i = F_LEN(src); 334398943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 334498943Sluigi dst += i; 334598943Sluigi } 334698943Sluigi /* 334798943Sluigi * copy all other actions 334898943Sluigi */ 334998943Sluigi for (src = (ipfw_insn *)actbuf; src != action; src += i) { 335098943Sluigi i = F_LEN(src); 335198943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 335298943Sluigi dst += i; 335398943Sluigi } 335498943Sluigi 335598943Sluigi rule->cmd_len = (u_int32_t *)dst - (u_int32_t *)(rule->cmd); 335698943Sluigi i = (void *)dst - (void *)rule; 335798943Sluigi if (getsockopt(s, IPPROTO_IP, IP_FW_ADD, rule, &i) == -1) 335898943Sluigi err(EX_UNAVAILABLE, "getsockopt(%s)", "IP_FW_ADD"); 335998943Sluigi if (!do_quiet) 3360112189Smaxim show_ipfw(rule, 10, 10); 336198943Sluigi} 336298943Sluigi 336398943Sluigistatic void 3364101978Sluigizero(int ac, char *av[]) 336598943Sluigi{ 336698943Sluigi int rulenum; 336798943Sluigi int failed = EX_OK; 336898943Sluigi 336998943Sluigi av++; ac--; 337098943Sluigi 337198943Sluigi if (!ac) { 337298943Sluigi /* clear all entries */ 337398943Sluigi if (setsockopt(s, IPPROTO_IP, IP_FW_ZERO, NULL, 0) < 0) 337498943Sluigi err(EX_UNAVAILABLE, "setsockopt(%s)", "IP_FW_ZERO"); 337598943Sluigi if (!do_quiet) 337698943Sluigi printf("Accounting cleared.\n"); 337798943Sluigi 337898943Sluigi return; 337998943Sluigi } 338098943Sluigi 338198943Sluigi while (ac) { 338298943Sluigi /* Rule number */ 338398943Sluigi if (isdigit(**av)) { 338498943Sluigi rulenum = atoi(*av); 338598943Sluigi av++; 338698943Sluigi ac--; 338798943Sluigi if (setsockopt(s, IPPROTO_IP, 338898943Sluigi IP_FW_ZERO, &rulenum, sizeof rulenum)) { 338998943Sluigi warn("rule %u: setsockopt(IP_FW_ZERO)", 339098943Sluigi rulenum); 339198943Sluigi failed = EX_UNAVAILABLE; 339298943Sluigi } else if (!do_quiet) 339398943Sluigi printf("Entry %d cleared\n", rulenum); 339498943Sluigi } else { 339598943Sluigi errx(EX_USAGE, "invalid rule number ``%s''", *av); 339698943Sluigi } 339798943Sluigi } 339898943Sluigi if (failed != EX_OK) 339998943Sluigi exit(failed); 340098943Sluigi} 340198943Sluigi 340298943Sluigistatic void 3403101978Sluigiresetlog(int ac, char *av[]) 340498943Sluigi{ 340598943Sluigi int rulenum; 340698943Sluigi int failed = EX_OK; 340798943Sluigi 340898943Sluigi av++; ac--; 340998943Sluigi 341098943Sluigi if (!ac) { 341198943Sluigi /* clear all entries */ 341298943Sluigi if (setsockopt(s, IPPROTO_IP, IP_FW_RESETLOG, NULL, 0) < 0) 341398943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_FW_RESETLOG)"); 341498943Sluigi if (!do_quiet) 341598943Sluigi printf("Logging counts reset.\n"); 341698943Sluigi 341798943Sluigi return; 341898943Sluigi } 341998943Sluigi 342098943Sluigi while (ac) { 342198943Sluigi /* Rule number */ 342298943Sluigi if (isdigit(**av)) { 342398943Sluigi rulenum = atoi(*av); 342498943Sluigi av++; 342598943Sluigi ac--; 342698943Sluigi if (setsockopt(s, IPPROTO_IP, 342798943Sluigi IP_FW_RESETLOG, &rulenum, sizeof rulenum)) { 342898943Sluigi warn("rule %u: setsockopt(IP_FW_RESETLOG)", 342998943Sluigi rulenum); 343098943Sluigi failed = EX_UNAVAILABLE; 343198943Sluigi } else if (!do_quiet) 343298943Sluigi printf("Entry %d logging count reset\n", 343398943Sluigi rulenum); 343498943Sluigi } else { 343598943Sluigi errx(EX_DATAERR, "invalid rule number ``%s''", *av); 343698943Sluigi } 343798943Sluigi } 343898943Sluigi if (failed != EX_OK) 343998943Sluigi exit(failed); 344098943Sluigi} 344198943Sluigi 344298943Sluigistatic void 344398943Sluigiflush() 344498943Sluigi{ 344598943Sluigi int cmd = do_pipe ? IP_DUMMYNET_FLUSH : IP_FW_FLUSH; 344698943Sluigi 344798943Sluigi if (!do_force && !do_quiet) { /* need to ask user */ 344898943Sluigi int c; 344998943Sluigi 345098943Sluigi printf("Are you sure? [yn] "); 345198943Sluigi fflush(stdout); 345298943Sluigi do { 345398943Sluigi c = toupper(getc(stdin)); 345498943Sluigi while (c != '\n' && getc(stdin) != '\n') 345598943Sluigi if (feof(stdin)) 345698943Sluigi return; /* and do not flush */ 345798943Sluigi } while (c != 'Y' && c != 'N'); 345898943Sluigi printf("\n"); 345998943Sluigi if (c == 'N') /* user said no */ 346098943Sluigi return; 346198943Sluigi } 346298943Sluigi if (setsockopt(s, IPPROTO_IP, cmd, NULL, 0) < 0) 346398943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_%s_FLUSH)", 346498943Sluigi do_pipe ? "DUMMYNET" : "FW"); 346598943Sluigi if (!do_quiet) 346698943Sluigi printf("Flushed all %s.\n", do_pipe ? "pipes" : "rules"); 346798943Sluigi} 346898943Sluigi 346998943Sluigistatic int 347098943Sluigiipfw_main(int ac, char **av) 347198943Sluigi{ 347298943Sluigi int ch; 347398943Sluigi 347498943Sluigi if (ac == 1) 347598943Sluigi show_usage(); 347698943Sluigi 347798943Sluigi /* Set the force flag for non-interactive processes */ 347898943Sluigi do_force = !isatty(STDIN_FILENO); 347998943Sluigi 348098943Sluigi optind = optreset = 1; 3481102098Sluigi while ((ch = getopt(ac, av, "hs:acdefNqStv")) != -1) 348298943Sluigi switch (ch) { 348398943Sluigi case 'h': /* help */ 348498943Sluigi help(); 348598943Sluigi break; /* NOTREACHED */ 348698943Sluigi 348798943Sluigi case 's': /* sort */ 348898943Sluigi do_sort = atoi(optarg); 348998943Sluigi break; 349098943Sluigi case 'a': 349198943Sluigi do_acct = 1; 349298943Sluigi break; 3493102098Sluigi case 'c': 3494102098Sluigi do_compact = 1; 3495102098Sluigi break; 349698943Sluigi case 'd': 349798943Sluigi do_dynamic = 1; 349898943Sluigi break; 349998943Sluigi case 'e': 350098943Sluigi do_expired = 1; 350198943Sluigi break; 350298943Sluigi case 'f': 350398943Sluigi do_force = 1; 350498943Sluigi break; 350598943Sluigi case 'N': 350698943Sluigi do_resolv = 1; 350798943Sluigi break; 350898943Sluigi case 'q': 350998943Sluigi do_quiet = 1; 351098943Sluigi break; 3511101628Sluigi case 'S': 3512101628Sluigi show_sets = 1; 3513101628Sluigi break; 351498943Sluigi case 't': 351598943Sluigi do_time = 1; 351698943Sluigi break; 351798943Sluigi case 'v': /* verbose */ 351898943Sluigi verbose++; 351998943Sluigi break; 352098943Sluigi default: 352198943Sluigi show_usage(); 352298943Sluigi } 352398943Sluigi 352498943Sluigi ac -= optind; 352598943Sluigi av += optind; 352698943Sluigi NEED1("bad arguments, for usage summary ``ipfw''"); 352798943Sluigi 352898943Sluigi /* 352998943Sluigi * optional: pipe or queue 353098943Sluigi */ 353198943Sluigi if (!strncmp(*av, "pipe", strlen(*av))) { 353298943Sluigi do_pipe = 1; 353398943Sluigi ac--; 353498943Sluigi av++; 353598943Sluigi } else if (!strncmp(*av, "queue", strlen(*av))) { 353698943Sluigi do_pipe = 2; 353798943Sluigi ac--; 353898943Sluigi av++; 353998943Sluigi } 354098943Sluigi NEED1("missing command"); 354198943Sluigi 354298943Sluigi /* 354398943Sluigi * for pipes and queues we normally say 'pipe NN config' 354498943Sluigi * but the code is easier to parse as 'pipe config NN' 354598943Sluigi * so we swap the two arguments. 354698943Sluigi */ 354798943Sluigi if (do_pipe > 0 && ac > 1 && *av[0] >= '0' && *av[0] <= '9') { 354898943Sluigi char *p = av[0]; 354998943Sluigi av[0] = av[1]; 355098943Sluigi av[1] = p; 355198943Sluigi } 355298943Sluigi if (!strncmp(*av, "add", strlen(*av))) 355398943Sluigi add(ac, av); 355498943Sluigi else if (do_pipe && !strncmp(*av, "config", strlen(*av))) 355598943Sluigi config_pipe(ac, av); 3556101978Sluigi else if (!strncmp(*av, "delete", strlen(*av))) 355798943Sluigi delete(ac, av); 355898943Sluigi else if (!strncmp(*av, "flush", strlen(*av))) 355998943Sluigi flush(); 356098943Sluigi else if (!strncmp(*av, "zero", strlen(*av))) 356198943Sluigi zero(ac, av); 356298943Sluigi else if (!strncmp(*av, "resetlog", strlen(*av))) 356398943Sluigi resetlog(ac, av); 356498943Sluigi else if (!strncmp(*av, "print", strlen(*av)) || 356598943Sluigi !strncmp(*av, "list", strlen(*av))) 356698943Sluigi list(ac, av); 3567101978Sluigi else if (!strncmp(*av, "set", strlen(*av))) 3568101978Sluigi sets_handler(ac, av); 3569109126Sdillon else if (!strncmp(*av, "enable", strlen(*av))) 3570109126Sdillon sysctl_handler(ac, av, 1); 3571109126Sdillon else if (!strncmp(*av, "disable", strlen(*av))) 3572109126Sdillon sysctl_handler(ac, av, 0); 357398943Sluigi else if (!strncmp(*av, "show", strlen(*av))) { 357498943Sluigi do_acct++; 357598943Sluigi list(ac, av); 357698943Sluigi } else 357798943Sluigi errx(EX_USAGE, "bad command `%s'", *av); 357898943Sluigi return 0; 357998943Sluigi} 358098943Sluigi 358198943Sluigi 358298943Sluigistatic void 3583106505Smaximipfw_readfile(int ac, char *av[]) 358498943Sluigi{ 358598943Sluigi#define MAX_ARGS 32 358698943Sluigi#define WHITESP " \t\f\v\n\r" 358798943Sluigi char buf[BUFSIZ]; 358898943Sluigi char *a, *p, *args[MAX_ARGS], *cmd = NULL; 358998943Sluigi char linename[10]; 359098943Sluigi int i=0, lineno=0, qflag=0, pflag=0, status; 359198943Sluigi FILE *f = NULL; 359298943Sluigi pid_t preproc = 0; 359398943Sluigi int c; 359498943Sluigi 3595108231Skbyanc while ((c = getopt(ac, av, "p:q")) != -1) { 359698943Sluigi switch(c) { 359798943Sluigi case 'p': 359898943Sluigi pflag = 1; 359998943Sluigi cmd = optarg; 360098943Sluigi args[0] = cmd; 360198943Sluigi i = 1; 360298943Sluigi break; 360398943Sluigi 360498943Sluigi case 'q': 360598943Sluigi qflag = 1; 360698943Sluigi break; 360798943Sluigi 360898943Sluigi default: 360998943Sluigi errx(EX_USAGE, "bad arguments, for usage" 361098943Sluigi " summary ``ipfw''"); 361198943Sluigi } 361298943Sluigi 3613108231Skbyanc if (pflag) 3614108231Skbyanc break; 3615108231Skbyanc } 3616108231Skbyanc 3617108231Skbyanc if (pflag) { 3618108231Skbyanc /* Pass all but the last argument to the preprocessor. */ 3619108231Skbyanc while (optind < ac - 1) { 3620108231Skbyanc if (i >= MAX_ARGS) 3621108231Skbyanc errx(EX_USAGE, "too many preprocessor options"); 3622108231Skbyanc args[i++] = av[optind++]; 3623108231Skbyanc } 3624108231Skbyanc } 3625108231Skbyanc 362698943Sluigi av += optind; 362798943Sluigi ac -= optind; 362898943Sluigi if (ac != 1) 362998943Sluigi errx(EX_USAGE, "extraneous filename arguments"); 363098943Sluigi 363198943Sluigi if ((f = fopen(av[0], "r")) == NULL) 363298943Sluigi err(EX_UNAVAILABLE, "fopen: %s", av[0]); 363398943Sluigi 363498943Sluigi if (pflag) { 363598943Sluigi /* pipe through preprocessor (cpp or m4) */ 363698943Sluigi int pipedes[2]; 363798943Sluigi 363898943Sluigi args[i] = 0; 363998943Sluigi 364098943Sluigi if (pipe(pipedes) == -1) 364198943Sluigi err(EX_OSERR, "cannot create pipe"); 364298943Sluigi 364398943Sluigi switch((preproc = fork())) { 364498943Sluigi case -1: 364598943Sluigi err(EX_OSERR, "cannot fork"); 364698943Sluigi 364798943Sluigi case 0: 364898943Sluigi /* child */ 364998943Sluigi if (dup2(fileno(f), 0) == -1 365098943Sluigi || dup2(pipedes[1], 1) == -1) 365198943Sluigi err(EX_OSERR, "dup2()"); 365298943Sluigi fclose(f); 365398943Sluigi close(pipedes[1]); 365498943Sluigi close(pipedes[0]); 365598943Sluigi execvp(cmd, args); 365698943Sluigi err(EX_OSERR, "execvp(%s) failed", cmd); 365798943Sluigi 365898943Sluigi default: 365998943Sluigi /* parent */ 366098943Sluigi fclose(f); 366198943Sluigi close(pipedes[1]); 366298943Sluigi if ((f = fdopen(pipedes[0], "r")) == NULL) { 366398943Sluigi int savederrno = errno; 366498943Sluigi 366598943Sluigi (void)kill(preproc, SIGTERM); 366698943Sluigi errno = savederrno; 366798943Sluigi err(EX_OSERR, "fdopen()"); 366898943Sluigi } 366998943Sluigi } 367098943Sluigi } 367198943Sluigi 367298943Sluigi while (fgets(buf, BUFSIZ, f)) { 367398943Sluigi lineno++; 367498943Sluigi sprintf(linename, "Line %d", lineno); 367598943Sluigi args[0] = linename; 367698943Sluigi 367798943Sluigi if (*buf == '#') 367898943Sluigi continue; 367998943Sluigi if ((p = strchr(buf, '#')) != NULL) 368098943Sluigi *p = '\0'; 368198943Sluigi i = 1; 368298943Sluigi if (qflag) 368398943Sluigi args[i++] = "-q"; 368498943Sluigi for (a = strtok(buf, WHITESP); 368598943Sluigi a && i < MAX_ARGS; a = strtok(NULL, WHITESP), i++) 368698943Sluigi args[i] = a; 368798943Sluigi if (i == (qflag? 2: 1)) 368898943Sluigi continue; 368998943Sluigi if (i == MAX_ARGS) 369098943Sluigi errx(EX_USAGE, "%s: too many arguments", 369198943Sluigi linename); 369298943Sluigi args[i] = NULL; 369398943Sluigi 369498943Sluigi ipfw_main(i, args); 369598943Sluigi } 369698943Sluigi fclose(f); 369798943Sluigi if (pflag) { 369898943Sluigi if (waitpid(preproc, &status, 0) == -1) 369998943Sluigi errx(EX_OSERR, "waitpid()"); 370098943Sluigi if (WIFEXITED(status) && WEXITSTATUS(status) != EX_OK) 370198943Sluigi errx(EX_UNAVAILABLE, 370298943Sluigi "preprocessor exited with status %d", 370398943Sluigi WEXITSTATUS(status)); 370498943Sluigi else if (WIFSIGNALED(status)) 370598943Sluigi errx(EX_UNAVAILABLE, 370698943Sluigi "preprocessor exited with signal %d", 370798943Sluigi WTERMSIG(status)); 370898943Sluigi } 370998943Sluigi} 371098943Sluigi 371198943Sluigiint 371298943Sluigimain(int ac, char *av[]) 371398943Sluigi{ 371498943Sluigi s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); 371598943Sluigi if (s < 0) 371698943Sluigi err(EX_UNAVAILABLE, "socket"); 371798943Sluigi 371898943Sluigi /* 371998943Sluigi * If the last argument is an absolute pathname, interpret it 372098943Sluigi * as a file to be preprocessed. 372198943Sluigi */ 372298943Sluigi 372398943Sluigi if (ac > 1 && av[ac - 1][0] == '/' && access(av[ac - 1], R_OK) == 0) 372498943Sluigi ipfw_readfile(ac, av); 372598943Sluigi else 372698943Sluigi ipfw_main(ac, av); 372798943Sluigi return EX_OK; 372898943Sluigi} 3729