ipfw2.c revision 115793
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 115793 2003-06-04 01:17:37Z ticso $ 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; 42198943Sluigi char *sep= " "; 42298943Sluigi 42398943Sluigi if (cmd->o.len & F_NOT) 42498943Sluigi printf(" not"); 425102087Sluigi if (opcode != 0) 426102087Sluigi printf ("%s", opcode == O_MAC_TYPE ? " mac-type" : 427102087Sluigi (opcode == O_IP_DSTPORT ? " dst-port" : " src-port")); 42898943Sluigi for (i = F_LEN((ipfw_insn *)cmd) - 1; i > 0; i--, p += 2) { 42998943Sluigi printf(sep); 43098943Sluigi print_port(proto, p[0]); 43198943Sluigi if (p[0] != p[1]) { 43298943Sluigi printf("-"); 43398943Sluigi print_port(proto, p[1]); 43498943Sluigi } 43598943Sluigi sep = ","; 43698943Sluigi } 43798943Sluigi} 43898943Sluigi 43998943Sluigi/* 44098943Sluigi * Like strtol, but also translates service names into port numbers 44198943Sluigi * for some protocols. 44298943Sluigi * In particular: 44398943Sluigi * proto == -1 disables the protocol check; 44498943Sluigi * proto == IPPROTO_ETHERTYPE looks up an internal table 44598943Sluigi * proto == <some value in /etc/protocols> matches the values there. 446101628Sluigi * Returns *end == s in case the parameter is not found. 44798943Sluigi */ 44898943Sluigistatic int 44998943Sluigistrtoport(char *s, char **end, int base, int proto) 45098943Sluigi{ 451101628Sluigi char *p, *buf; 452101628Sluigi char *s1; 45398943Sluigi int i; 45498943Sluigi 455101628Sluigi *end = s; /* default - not found */ 45698943Sluigi if ( *s == '\0') 457101628Sluigi return 0; /* not found */ 458106505Smaxim 45998943Sluigi if (isdigit(*s)) 46098943Sluigi return strtol(s, end, base); 46198943Sluigi 46298943Sluigi /* 463101628Sluigi * find separator. '\\' escapes the next char. 46498943Sluigi */ 465101628Sluigi for (s1 = s; *s1 && (isalnum(*s1) || *s1 == '\\') ; s1++) 466101628Sluigi if (*s1 == '\\' && s1[1] != '\0') 467101628Sluigi s1++; 46898943Sluigi 469101628Sluigi buf = malloc(s1 - s + 1); 470101628Sluigi if (buf == NULL) 471101628Sluigi return 0; 472101628Sluigi 473101628Sluigi /* 474101628Sluigi * copy into a buffer skipping backslashes 475101628Sluigi */ 476101628Sluigi for (p = s, i = 0; p != s1 ; p++) 477101628Sluigi if ( *p != '\\') 478101628Sluigi buf[i++] = *p; 479101628Sluigi buf[i++] = '\0'; 480101628Sluigi 48198943Sluigi if (proto == IPPROTO_ETHERTYPE) { 482101628Sluigi i = match_token(ether_types, buf); 483101628Sluigi free(buf); 484101628Sluigi if (i != -1) { /* found */ 48598943Sluigi *end = s1; 48698943Sluigi return i; 48798943Sluigi } 48898943Sluigi } else { 48998943Sluigi struct protoent *pe = NULL; 49098943Sluigi struct servent *se; 49198943Sluigi 49298943Sluigi if (proto != 0) 49398943Sluigi pe = getprotobynumber(proto); 49498943Sluigi setservent(1); 495101628Sluigi se = getservbyname(buf, pe ? pe->p_name : NULL); 496101628Sluigi free(buf); 49798943Sluigi if (se != NULL) { 49898943Sluigi *end = s1; 49998943Sluigi return ntohs(se->s_port); 50098943Sluigi } 50198943Sluigi } 502101628Sluigi return 0; /* not found */ 50398943Sluigi} 50498943Sluigi 50598943Sluigi/* 50698943Sluigi * fill the body of the command with the list of port ranges. 50798943Sluigi * At the moment it only understands numeric ranges. 50898943Sluigi */ 50998943Sluigistatic int 51098943Sluigifill_newports(ipfw_insn_u16 *cmd, char *av, int proto) 51198943Sluigi{ 51298943Sluigi u_int16_t *p = cmd->ports; 51398943Sluigi int i = 0; 514102087Sluigi char *s = av; 51598943Sluigi 516102087Sluigi while (*s) { 51798943Sluigi u_int16_t a, b; 51898943Sluigi 51998943Sluigi a = strtoport(av, &s, 0, proto); 52098943Sluigi if (s == av) /* no parameter */ 52198943Sluigi break; 52298943Sluigi if (*s == '-') { /* a range */ 52398943Sluigi av = s+1; 52498943Sluigi b = strtoport(av, &s, 0, proto); 52598943Sluigi if (s == av) /* no parameter */ 52698943Sluigi break; 52798943Sluigi p[0] = a; 52898943Sluigi p[1] = b; 52998943Sluigi } else if (*s == ',' || *s == '\0' ) { 53098943Sluigi p[0] = p[1] = a; 531101978Sluigi } else { /* invalid separator */ 532101978Sluigi errx(EX_DATAERR, "invalid separator <%c> in <%s>\n", 533101978Sluigi *s, av); 534101978Sluigi } 535102087Sluigi i++; 536102087Sluigi p += 2; 53798943Sluigi av = s+1; 53898943Sluigi } 53998943Sluigi if (i > 0) { 54098943Sluigi if (i+1 > F_LEN_MASK) 541102087Sluigi errx(EX_DATAERR, "too many ports/ranges\n"); 54298943Sluigi cmd->o.len |= i+1; /* leave F_NOT and F_OR untouched */ 54398943Sluigi } 54498943Sluigi return i; 54598943Sluigi} 54698943Sluigi 54798943Sluigistatic struct _s_x icmpcodes[] = { 54898943Sluigi { "net", ICMP_UNREACH_NET }, 54998943Sluigi { "host", ICMP_UNREACH_HOST }, 55098943Sluigi { "protocol", ICMP_UNREACH_PROTOCOL }, 55198943Sluigi { "port", ICMP_UNREACH_PORT }, 55298943Sluigi { "needfrag", ICMP_UNREACH_NEEDFRAG }, 55398943Sluigi { "srcfail", ICMP_UNREACH_SRCFAIL }, 55498943Sluigi { "net-unknown", ICMP_UNREACH_NET_UNKNOWN }, 55598943Sluigi { "host-unknown", ICMP_UNREACH_HOST_UNKNOWN }, 55698943Sluigi { "isolated", ICMP_UNREACH_ISOLATED }, 55798943Sluigi { "net-prohib", ICMP_UNREACH_NET_PROHIB }, 55898943Sluigi { "host-prohib", ICMP_UNREACH_HOST_PROHIB }, 55998943Sluigi { "tosnet", ICMP_UNREACH_TOSNET }, 56098943Sluigi { "toshost", ICMP_UNREACH_TOSHOST }, 56198943Sluigi { "filter-prohib", ICMP_UNREACH_FILTER_PROHIB }, 56298943Sluigi { "host-precedence", ICMP_UNREACH_HOST_PRECEDENCE }, 56398943Sluigi { "precedence-cutoff", ICMP_UNREACH_PRECEDENCE_CUTOFF }, 56498943Sluigi { NULL, 0 } 56598943Sluigi}; 56698943Sluigi 56798943Sluigistatic void 56898943Sluigifill_reject_code(u_short *codep, char *str) 56998943Sluigi{ 57098943Sluigi int val; 57198943Sluigi char *s; 57298943Sluigi 57398943Sluigi val = strtoul(str, &s, 0); 57498943Sluigi if (s == str || *s != '\0' || val >= 0x100) 57598943Sluigi val = match_token(icmpcodes, str); 576102087Sluigi if (val < 0) 57798943Sluigi errx(EX_DATAERR, "unknown ICMP unreachable code ``%s''", str); 57898943Sluigi *codep = val; 57998943Sluigi return; 58098943Sluigi} 58198943Sluigi 58298943Sluigistatic void 58399475Sluigiprint_reject_code(u_int16_t code) 58498943Sluigi{ 58598943Sluigi char *s = match_value(icmpcodes, code); 58698943Sluigi 58798943Sluigi if (s != NULL) 58899475Sluigi printf("unreach %s", s); 58998943Sluigi else 59099475Sluigi printf("unreach %u", code); 59198943Sluigi} 59298943Sluigi 59398943Sluigi/* 59498943Sluigi * Returns the number of bits set (from left) in a contiguous bitmask, 59598943Sluigi * or -1 if the mask is not contiguous. 59698943Sluigi * XXX this needs a proper fix. 59798943Sluigi * This effectively works on masks in big-endian (network) format. 59898943Sluigi * when compiled on little endian architectures. 59998943Sluigi * 60098943Sluigi * First bit is bit 7 of the first byte -- note, for MAC addresses, 60198943Sluigi * the first bit on the wire is bit 0 of the first byte. 60298943Sluigi * len is the max length in bits. 60398943Sluigi */ 60498943Sluigistatic int 60598943Sluigicontigmask(u_char *p, int len) 60698943Sluigi{ 60798943Sluigi int i, n; 60898943Sluigi for (i=0; i<len ; i++) 60998943Sluigi if ( (p[i/8] & (1 << (7 - (i%8)))) == 0) /* first bit unset */ 61098943Sluigi break; 61198943Sluigi for (n=i+1; n < len; n++) 61298943Sluigi if ( (p[n/8] & (1 << (7 - (n%8)))) != 0) 61398943Sluigi return -1; /* mask not contiguous */ 61498943Sluigi return i; 61598943Sluigi} 61698943Sluigi 61798943Sluigi/* 61898943Sluigi * print flags set/clear in the two bitmasks passed as parameters. 61998943Sluigi * There is a specialized check for f_tcpflags. 62098943Sluigi */ 62198943Sluigistatic void 62298943Sluigiprint_flags(char *name, ipfw_insn *cmd, struct _s_x *list) 62398943Sluigi{ 62498943Sluigi char *comma=""; 62598943Sluigi int i; 62698943Sluigi u_char set = cmd->arg1 & 0xff; 62798943Sluigi u_char clear = (cmd->arg1 >> 8) & 0xff; 62898943Sluigi 62998943Sluigi if (list == f_tcpflags && set == TH_SYN && clear == TH_ACK) { 63098943Sluigi printf(" setup"); 63198943Sluigi return; 63298943Sluigi } 63398943Sluigi 63498943Sluigi printf(" %s ", name); 63598943Sluigi for (i=0; list[i].x != 0; i++) { 63698943Sluigi if (set & list[i].x) { 63798943Sluigi set &= ~list[i].x; 63898943Sluigi printf("%s%s", comma, list[i].s); 63998943Sluigi comma = ","; 64098943Sluigi } 64198943Sluigi if (clear & list[i].x) { 64298943Sluigi clear &= ~list[i].x; 64398943Sluigi printf("%s!%s", comma, list[i].s); 64498943Sluigi comma = ","; 64598943Sluigi } 64698943Sluigi } 64798943Sluigi} 64898943Sluigi 64998943Sluigi/* 65098943Sluigi * Print the ip address contained in a command. 65198943Sluigi */ 65298943Sluigistatic void 653102087Sluigiprint_ip(ipfw_insn_ip *cmd, char *s) 65498943Sluigi{ 65598943Sluigi struct hostent *he = NULL; 65698943Sluigi int mb; 65798943Sluigi 658102087Sluigi printf("%s%s ", cmd->o.len & F_NOT ? " not": "", s); 65998943Sluigi 66098943Sluigi if (cmd->o.opcode == O_IP_SRC_ME || cmd->o.opcode == O_IP_DST_ME) { 66198943Sluigi printf("me"); 66298943Sluigi return; 66398943Sluigi } 66498943Sluigi if (cmd->o.opcode == O_IP_SRC_SET || cmd->o.opcode == O_IP_DST_SET) { 66598943Sluigi u_int32_t x, *d; 66698943Sluigi int i; 66798943Sluigi char comma = '{'; 66898943Sluigi 66998943Sluigi x = cmd->o.arg1 - 1; 67098943Sluigi x = htonl( ~x ); 67198943Sluigi cmd->addr.s_addr = htonl(cmd->addr.s_addr); 67298943Sluigi printf("%s/%d", inet_ntoa(cmd->addr), 67398943Sluigi contigmask((u_char *)&x, 32)); 67498943Sluigi x = cmd->addr.s_addr = htonl(cmd->addr.s_addr); 67598943Sluigi x &= 0xff; /* base */ 67698943Sluigi d = (u_int32_t *)&(cmd->mask); 67798943Sluigi for (i=0; i < cmd->o.arg1; i++) 67898943Sluigi if (d[ i/32] & (1<<(i & 31))) { 67998943Sluigi printf("%c%d", comma, i+x); 68098943Sluigi comma = ','; 68198943Sluigi } 68298943Sluigi printf("}"); 68398943Sluigi return; 68498943Sluigi } 68598943Sluigi if (cmd->o.opcode == O_IP_SRC || cmd->o.opcode == O_IP_DST) 68698943Sluigi mb = 32; 68798943Sluigi else 68898943Sluigi mb = contigmask((u_char *)&(cmd->mask.s_addr), 32); 68998943Sluigi if (mb == 32 && do_resolv) 69098943Sluigi he = gethostbyaddr((char *)&(cmd->addr.s_addr), 69198943Sluigi sizeof(u_long), AF_INET); 69298943Sluigi if (he != NULL) /* resolved to name */ 69398943Sluigi printf("%s", he->h_name); 69498943Sluigi else if (mb == 0) /* any */ 69598943Sluigi printf("any"); 69698943Sluigi else { /* numeric IP followed by some kind of mask */ 69798943Sluigi printf("%s", inet_ntoa(cmd->addr)); 69898943Sluigi if (mb < 0) 69998943Sluigi printf(":%s", inet_ntoa(cmd->mask)); 70098943Sluigi else if (mb < 32) 70198943Sluigi printf("/%d", mb); 70298943Sluigi } 70398943Sluigi} 70498943Sluigi 70598943Sluigi/* 70698943Sluigi * prints a MAC address/mask pair 70798943Sluigi */ 70898943Sluigistatic void 70998943Sluigiprint_mac(u_char *addr, u_char *mask) 71098943Sluigi{ 71198943Sluigi int l = contigmask(mask, 48); 71298943Sluigi 71398943Sluigi if (l == 0) 71498943Sluigi printf(" any"); 71598943Sluigi else { 71698943Sluigi printf(" %02x:%02x:%02x:%02x:%02x:%02x", 71798943Sluigi addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 71898943Sluigi if (l == -1) 71998943Sluigi printf("&%02x:%02x:%02x:%02x:%02x:%02x", 72098943Sluigi mask[0], mask[1], mask[2], 72198943Sluigi mask[3], mask[4], mask[5]); 72298943Sluigi else if (l < 48) 72398943Sluigi printf("/%d", l); 72498943Sluigi } 72598943Sluigi} 72698943Sluigi 72799475Sluigistatic void 72899475Sluigifill_icmptypes(ipfw_insn_u32 *cmd, char *av) 72999475Sluigi{ 73099475Sluigi u_int8_t type; 73198943Sluigi 73299475Sluigi cmd->d[0] = 0; 73399475Sluigi while (*av) { 73499475Sluigi if (*av == ',') 73599475Sluigi av++; 73699475Sluigi 73799475Sluigi type = strtoul(av, &av, 0); 73899475Sluigi 73999475Sluigi if (*av != ',' && *av != '\0') 74099475Sluigi errx(EX_DATAERR, "invalid ICMP type"); 74199475Sluigi 74299475Sluigi if (type > 31) 74399475Sluigi errx(EX_DATAERR, "ICMP type out of range"); 74499475Sluigi 74599475Sluigi cmd->d[0] |= 1 << type; 74699475Sluigi } 74799475Sluigi cmd->o.opcode = O_ICMPTYPE; 74899475Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 74999475Sluigi} 75099475Sluigi 75199475Sluigistatic void 75299475Sluigiprint_icmptypes(ipfw_insn_u32 *cmd) 75399475Sluigi{ 75499475Sluigi int i; 75599475Sluigi char sep= ' '; 75699475Sluigi 75799475Sluigi printf(" icmptypes"); 75899475Sluigi for (i = 0; i < 32; i++) { 75999475Sluigi if ( (cmd->d[0] & (1 << (i))) == 0) 76099475Sluigi continue; 76199475Sluigi printf("%c%d", sep, i); 76299475Sluigi sep = ','; 76399475Sluigi } 76499475Sluigi} 76599475Sluigi 76698943Sluigi/* 76798943Sluigi * show_ipfw() prints the body of an ipfw rule. 76898943Sluigi * Because the standard rule has at least proto src_ip dst_ip, we use 76998943Sluigi * a helper function to produce these entries if not provided explicitly. 770102087Sluigi * The first argument is the list of fields we have, the second is 771102087Sluigi * the list of fields we want to be printed. 772101978Sluigi * 773102087Sluigi * Special cases if we have provided a MAC header: 774102087Sluigi * + if the rule does not contain IP addresses/ports, do not print them; 775102087Sluigi * + if the rule does not contain an IP proto, print "all" instead of "ip"; 776102087Sluigi * 777102087Sluigi * Once we have 'have_options', IP header fields are printed as options. 77898943Sluigi */ 779101978Sluigi#define HAVE_PROTO 0x0001 780101978Sluigi#define HAVE_SRCIP 0x0002 781101978Sluigi#define HAVE_DSTIP 0x0004 782101978Sluigi#define HAVE_MAC 0x0008 783101978Sluigi#define HAVE_MACTYPE 0x0010 784102087Sluigi#define HAVE_OPTIONS 0x8000 78598943Sluigi 786101978Sluigi#define HAVE_IP (HAVE_PROTO | HAVE_SRCIP | HAVE_DSTIP) 78798943Sluigistatic void 788102087Sluigishow_prerequisites(int *flags, int want, int cmd) 78998943Sluigi{ 790102087Sluigi if ( (*flags & HAVE_IP) == HAVE_IP) 791102087Sluigi *flags |= HAVE_OPTIONS; 792102087Sluigi 793102087Sluigi if ( (*flags & (HAVE_MAC|HAVE_MACTYPE|HAVE_OPTIONS)) == HAVE_MAC && 794102087Sluigi cmd != O_MAC_TYPE) { 795102087Sluigi /* 796102087Sluigi * mac-type was optimized out by the compiler, 797102087Sluigi * restore it 798102087Sluigi */ 799102087Sluigi printf(" any"); 800102087Sluigi *flags |= HAVE_MACTYPE | HAVE_OPTIONS; 801102087Sluigi return; 802101978Sluigi } 803102087Sluigi if ( !(*flags & HAVE_OPTIONS)) { 804102087Sluigi if ( !(*flags & HAVE_PROTO) && (want & HAVE_PROTO)) 805102087Sluigi printf(" ip"); 806102087Sluigi if ( !(*flags & HAVE_SRCIP) && (want & HAVE_SRCIP)) 807102087Sluigi printf(" from any"); 808102087Sluigi if ( !(*flags & HAVE_DSTIP) && (want & HAVE_DSTIP)) 809102087Sluigi printf(" to any"); 810102087Sluigi } 81198943Sluigi *flags |= want; 81298943Sluigi} 81398943Sluigi 81498943Sluigistatic void 815112189Smaximshow_ipfw(struct ip_fw *rule, int pcwidth, int bcwidth) 81698943Sluigi{ 817107291Skeramida static int twidth = 0; 81898943Sluigi int l; 81998943Sluigi ipfw_insn *cmd; 82098943Sluigi int proto = 0; /* default */ 82198943Sluigi int flags = 0; /* prerequisites */ 82298943Sluigi ipfw_insn_log *logptr = NULL; /* set if we find an O_LOG */ 82398943Sluigi int or_block = 0; /* we are in an or block */ 824115793Sticso u_int32_t set_disable; 82598943Sluigi 826115793Sticso bcopy(&rule->next_rule, &set_disable, sizeof(set_disable)); 827101628Sluigi 828101628Sluigi if (set_disable & (1 << rule->set)) { /* disabled */ 829101628Sluigi if (!show_sets) 830101628Sluigi return; 831101628Sluigi else 832101628Sluigi printf("# DISABLED "); 833101628Sluigi } 83498943Sluigi printf("%05u ", rule->rulenum); 83598943Sluigi 83698943Sluigi if (do_acct) 837115793Sticso printf("%*llu %*llu ", pcwidth, align_uint64(&rule->pcnt), 838115793Sticso bcwidth, align_uint64(&rule->bcnt)); 83998943Sluigi 84098943Sluigi if (do_time) { 841107291Skeramida char timestr[30]; 842107291Skeramida time_t t = (time_t)0; 843107291Skeramida 844107291Skeramida if (twidth == 0) { 845107291Skeramida strcpy(timestr, ctime(&t)); 846107291Skeramida *strchr(timestr, '\n') = '\0'; 847107291Skeramida twidth = strlen(timestr); 848107291Skeramida } 84998943Sluigi if (rule->timestamp) { 850107291Skeramida t = _long_to_time(rule->timestamp); 85198943Sluigi 85298943Sluigi strcpy(timestr, ctime(&t)); 85398943Sluigi *strchr(timestr, '\n') = '\0'; 85498943Sluigi printf("%s ", timestr); 85598943Sluigi } else { 856107291Skeramida printf("%*s", twidth, " "); 85798943Sluigi } 85898943Sluigi } 85998943Sluigi 860101628Sluigi if (show_sets) 861101628Sluigi printf("set %d ", rule->set); 862101628Sluigi 86398943Sluigi /* 864107289Sluigi * print the optional "match probability" 865107289Sluigi */ 866107289Sluigi if (rule->cmd_len > 0) { 867107289Sluigi cmd = rule->cmd ; 868107289Sluigi if (cmd->opcode == O_PROB) { 869107289Sluigi ipfw_insn_u32 *p = (ipfw_insn_u32 *)cmd; 870107289Sluigi double d = 1.0 * p->d[0]; 871107289Sluigi 872107289Sluigi d = (d / 0x7fffffff); 873107289Sluigi printf("prob %f ", d); 874107289Sluigi } 875107289Sluigi } 876107289Sluigi 877107289Sluigi /* 87898943Sluigi * first print actions 87998943Sluigi */ 88098943Sluigi for (l = rule->cmd_len - rule->act_ofs, cmd = ACTION_PTR(rule); 88198943Sluigi l > 0 ; l -= F_LEN(cmd), cmd += F_LEN(cmd)) { 88298943Sluigi switch(cmd->opcode) { 88398943Sluigi case O_CHECK_STATE: 88498943Sluigi printf("check-state"); 885102087Sluigi flags = HAVE_IP; /* avoid printing anything else */ 88698943Sluigi break; 88798943Sluigi 88898943Sluigi case O_ACCEPT: 88998943Sluigi printf("allow"); 89098943Sluigi break; 89198943Sluigi 89298943Sluigi case O_COUNT: 89398943Sluigi printf("count"); 89498943Sluigi break; 89598943Sluigi 89698943Sluigi case O_DENY: 89798943Sluigi printf("deny"); 89898943Sluigi break; 89998943Sluigi 90099475Sluigi case O_REJECT: 90199475Sluigi if (cmd->arg1 == ICMP_REJECT_RST) 90299475Sluigi printf("reset"); 90399475Sluigi else if (cmd->arg1 == ICMP_UNREACH_HOST) 90499475Sluigi printf("reject"); 90599475Sluigi else 90699475Sluigi print_reject_code(cmd->arg1); 90799475Sluigi break; 90899475Sluigi 90998943Sluigi case O_SKIPTO: 91098943Sluigi printf("skipto %u", cmd->arg1); 91198943Sluigi break; 91298943Sluigi 91398943Sluigi case O_PIPE: 91498943Sluigi printf("pipe %u", cmd->arg1); 91598943Sluigi break; 91698943Sluigi 91798943Sluigi case O_QUEUE: 91898943Sluigi printf("queue %u", cmd->arg1); 91998943Sluigi break; 92098943Sluigi 92198943Sluigi case O_DIVERT: 92298943Sluigi printf("divert %u", cmd->arg1); 92398943Sluigi break; 92498943Sluigi 92598943Sluigi case O_TEE: 92698943Sluigi printf("tee %u", cmd->arg1); 92798943Sluigi break; 92898943Sluigi 92998943Sluigi case O_FORWARD_IP: 93098943Sluigi { 93198943Sluigi ipfw_insn_sa *s = (ipfw_insn_sa *)cmd; 93298943Sluigi 93398943Sluigi printf("fwd %s", inet_ntoa(s->sa.sin_addr)); 93498943Sluigi if (s->sa.sin_port) 935103241Sluigi printf(",%d", s->sa.sin_port); 93698943Sluigi } 93798943Sluigi break; 93898943Sluigi 93998943Sluigi case O_LOG: /* O_LOG is printed last */ 94098943Sluigi logptr = (ipfw_insn_log *)cmd; 94198943Sluigi break; 94298943Sluigi 94398943Sluigi default: 94498943Sluigi printf("** unrecognized action %d len %d", 94598943Sluigi cmd->opcode, cmd->len); 94698943Sluigi } 94798943Sluigi } 94898943Sluigi if (logptr) { 94998943Sluigi if (logptr->max_log > 0) 95099909Sluigi printf(" log logamount %d", logptr->max_log); 95198943Sluigi else 95299909Sluigi printf(" log"); 95398943Sluigi } 954102087Sluigi 95598943Sluigi /* 956102087Sluigi * then print the body. 95798943Sluigi */ 958102087Sluigi if (rule->_pad & 1) { /* empty rules before options */ 959102098Sluigi if (!do_compact) 960102098Sluigi printf(" ip from any to any"); 961102087Sluigi flags |= HAVE_IP | HAVE_OPTIONS; 962102087Sluigi } 963102087Sluigi 96498943Sluigi for (l = rule->act_ofs, cmd = rule->cmd ; 96598943Sluigi l > 0 ; l -= F_LEN(cmd) , cmd += F_LEN(cmd)) { 96699475Sluigi /* useful alias */ 96799475Sluigi ipfw_insn_u32 *cmd32 = (ipfw_insn_u32 *)cmd; 96898943Sluigi 969102087Sluigi show_prerequisites(&flags, 0, cmd->opcode); 970102087Sluigi 97198943Sluigi switch(cmd->opcode) { 972107289Sluigi case O_PROB: 973107289Sluigi break; /* done already */ 974107289Sluigi 97598943Sluigi case O_PROBE_STATE: 97698943Sluigi break; /* no need to print anything here */ 97798943Sluigi 97898943Sluigi case O_MACADDR2: { 97998943Sluigi ipfw_insn_mac *m = (ipfw_insn_mac *)cmd; 980102087Sluigi 981102087Sluigi if ((cmd->len & F_OR) && !or_block) 982102087Sluigi printf(" {"); 98398943Sluigi if (cmd->len & F_NOT) 98498943Sluigi printf(" not"); 985102087Sluigi printf(" MAC"); 986102087Sluigi flags |= HAVE_MAC; 98798943Sluigi print_mac( m->addr, m->mask); 98898943Sluigi print_mac( m->addr + 6, m->mask + 6); 98998943Sluigi } 99098943Sluigi break; 99198943Sluigi 99298943Sluigi case O_MAC_TYPE: 993102087Sluigi if ((cmd->len & F_OR) && !or_block) 994102087Sluigi printf(" {"); 995102087Sluigi print_newports((ipfw_insn_u16 *)cmd, IPPROTO_ETHERTYPE, 996102087Sluigi (flags & HAVE_OPTIONS) ? cmd->opcode : 0); 997102087Sluigi flags |= HAVE_MAC | HAVE_MACTYPE | HAVE_OPTIONS; 99898943Sluigi break; 99998943Sluigi 100098943Sluigi case O_IP_SRC: 100198943Sluigi case O_IP_SRC_MASK: 100298943Sluigi case O_IP_SRC_ME: 100398943Sluigi case O_IP_SRC_SET: 1004102087Sluigi show_prerequisites(&flags, HAVE_PROTO, 0); 100598943Sluigi if (!(flags & HAVE_SRCIP)) 100698943Sluigi printf(" from"); 100798943Sluigi if ((cmd->len & F_OR) && !or_block) 100898943Sluigi printf(" {"); 1009102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1010102087Sluigi (flags & HAVE_OPTIONS) ? " src-ip" : ""); 101198943Sluigi flags |= HAVE_SRCIP; 101298943Sluigi break; 101398943Sluigi 101498943Sluigi case O_IP_DST: 101598943Sluigi case O_IP_DST_MASK: 101698943Sluigi case O_IP_DST_ME: 101798943Sluigi case O_IP_DST_SET: 1018102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 101998943Sluigi if (!(flags & HAVE_DSTIP)) 102098943Sluigi printf(" to"); 102198943Sluigi if ((cmd->len & F_OR) && !or_block) 102298943Sluigi printf(" {"); 1023102087Sluigi print_ip((ipfw_insn_ip *)cmd, 1024102087Sluigi (flags & HAVE_OPTIONS) ? " dst-ip" : ""); 102598943Sluigi flags |= HAVE_DSTIP; 102698943Sluigi break; 102798943Sluigi 102898943Sluigi case O_IP_DSTPORT: 1029102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 103098943Sluigi case O_IP_SRCPORT: 1031102087Sluigi show_prerequisites(&flags, HAVE_PROTO|HAVE_SRCIP, 0); 1032101641Sluigi if ((cmd->len & F_OR) && !or_block) 1033101641Sluigi printf(" {"); 1034102087Sluigi print_newports((ipfw_insn_u16 *)cmd, proto, 1035102087Sluigi (flags & HAVE_OPTIONS) ? cmd->opcode : 0); 103698943Sluigi break; 103798943Sluigi 103898943Sluigi case O_PROTO: { 103998943Sluigi struct protoent *pe; 104098943Sluigi 104198943Sluigi if ((cmd->len & F_OR) && !or_block) 104298943Sluigi printf(" {"); 104398943Sluigi if (cmd->len & F_NOT) 104498943Sluigi printf(" not"); 104598943Sluigi proto = cmd->arg1; 104698943Sluigi pe = getprotobynumber(cmd->arg1); 1047102087Sluigi if (flags & HAVE_OPTIONS) 1048102087Sluigi printf(" proto"); 104998943Sluigi if (pe) 105098943Sluigi printf(" %s", pe->p_name); 105198943Sluigi else 105298943Sluigi printf(" %u", cmd->arg1); 105398943Sluigi } 105498943Sluigi flags |= HAVE_PROTO; 105598943Sluigi break; 1056106505Smaxim 105798943Sluigi default: /*options ... */ 1058102087Sluigi show_prerequisites(&flags, HAVE_IP | HAVE_OPTIONS, 0); 105998943Sluigi if ((cmd->len & F_OR) && !or_block) 106098943Sluigi printf(" {"); 106198943Sluigi if (cmd->len & F_NOT && cmd->opcode != O_IN) 106298943Sluigi printf(" not"); 106398943Sluigi switch(cmd->opcode) { 106498943Sluigi case O_FRAG: 106598943Sluigi printf(" frag"); 106698943Sluigi break; 106798943Sluigi 106898943Sluigi case O_IN: 106998943Sluigi printf(cmd->len & F_NOT ? " out" : " in"); 107098943Sluigi break; 107198943Sluigi 107298943Sluigi case O_LAYER2: 107398943Sluigi printf(" layer2"); 107498943Sluigi break; 107598943Sluigi case O_XMIT: 107698943Sluigi case O_RECV: 107798943Sluigi case O_VIA: { 107898943Sluigi char *s; 107998943Sluigi ipfw_insn_if *cmdif = (ipfw_insn_if *)cmd; 108098943Sluigi 108198943Sluigi if (cmd->opcode == O_XMIT) 108298943Sluigi s = "xmit"; 108398943Sluigi else if (cmd->opcode == O_RECV) 108498943Sluigi s = "recv"; 108598943Sluigi else if (cmd->opcode == O_VIA) 108698943Sluigi s = "via"; 108798943Sluigi if (cmdif->name[0] == '\0') 108899475Sluigi printf(" %s %s", s, 108999475Sluigi inet_ntoa(cmdif->p.ip)); 109098943Sluigi else if (cmdif->p.unit == -1) 109198943Sluigi printf(" %s %s*", s, cmdif->name); 109298943Sluigi else 109399475Sluigi printf(" %s %s%d", s, cmdif->name, 109499475Sluigi cmdif->p.unit); 109598943Sluigi } 109698943Sluigi break; 109798943Sluigi 109898943Sluigi case O_IPID: 109998943Sluigi printf(" ipid %u", cmd->arg1 ); 110098943Sluigi break; 110198943Sluigi 110298943Sluigi case O_IPTTL: 110398943Sluigi printf(" ipttl %u", cmd->arg1 ); 110498943Sluigi break; 110598943Sluigi 110698943Sluigi case O_IPVER: 110798943Sluigi printf(" ipver %u", cmd->arg1 ); 110898943Sluigi break; 110998943Sluigi 111099475Sluigi case O_IPPRECEDENCE: 111199475Sluigi printf(" ipprecedence %u", (cmd->arg1) >> 5 ); 111299475Sluigi break; 111399475Sluigi 111498943Sluigi case O_IPLEN: 111598943Sluigi printf(" iplen %u", cmd->arg1 ); 111698943Sluigi break; 111798943Sluigi 1118101116Sluigi case O_IPOPT: 111998943Sluigi print_flags("ipoptions", cmd, f_ipopts); 112098943Sluigi break; 112198943Sluigi 112299475Sluigi case O_IPTOS: 112399475Sluigi print_flags("iptos", cmd, f_iptos); 112499475Sluigi break; 112599475Sluigi 112699475Sluigi case O_ICMPTYPE: 112799475Sluigi print_icmptypes((ipfw_insn_u32 *)cmd); 112899475Sluigi break; 112999475Sluigi 113098943Sluigi case O_ESTAB: 113198943Sluigi printf(" established"); 113298943Sluigi break; 113398943Sluigi 113498943Sluigi case O_TCPFLAGS: 113598943Sluigi print_flags("tcpflags", cmd, f_tcpflags); 113698943Sluigi break; 113798943Sluigi 113898943Sluigi case O_TCPOPTS: 113998943Sluigi print_flags("tcpoptions", cmd, f_tcpopts); 114098943Sluigi break; 114198943Sluigi 114298943Sluigi case O_TCPWIN: 114398943Sluigi printf(" tcpwin %d", ntohs(cmd->arg1)); 114498943Sluigi break; 114598943Sluigi 114698943Sluigi case O_TCPACK: 114798943Sluigi printf(" tcpack %d", ntohl(cmd32->d[0])); 114898943Sluigi break; 114998943Sluigi 115098943Sluigi case O_TCPSEQ: 115198943Sluigi printf(" tcpseq %d", ntohl(cmd32->d[0])); 115298943Sluigi break; 115398943Sluigi 115498943Sluigi case O_UID: 115598943Sluigi { 115698943Sluigi struct passwd *pwd = getpwuid(cmd32->d[0]); 115798943Sluigi 115898943Sluigi if (pwd) 115998943Sluigi printf(" uid %s", pwd->pw_name); 116098943Sluigi else 116198943Sluigi printf(" uid %u", cmd32->d[0]); 116298943Sluigi } 116398943Sluigi break; 116498943Sluigi 116598943Sluigi case O_GID: 116698943Sluigi { 116798943Sluigi struct group *grp = getgrgid(cmd32->d[0]); 116898943Sluigi 116998943Sluigi if (grp) 117098943Sluigi printf(" gid %s", grp->gr_name); 117198943Sluigi else 117298943Sluigi printf(" gid %u", cmd32->d[0]); 117398943Sluigi } 117498943Sluigi break; 117598943Sluigi 1176112250Scjc case O_VERREVPATH: 1177112250Scjc printf(" verrevpath"); 1178112250Scjc break; 1179112250Scjc 118098943Sluigi case O_KEEP_STATE: 118198943Sluigi printf(" keep-state"); 118298943Sluigi break; 118398943Sluigi 118498943Sluigi case O_LIMIT: 118598943Sluigi { 118698943Sluigi struct _s_x *p = limit_masks; 118798943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 118898943Sluigi u_int8_t x = c->limit_mask; 118998943Sluigi char *comma = " "; 119098943Sluigi 119198943Sluigi printf(" limit"); 1192106505Smaxim for ( ; p->x != 0 ; p++) 119399909Sluigi if ((x & p->x) == p->x) { 119498943Sluigi x &= ~p->x; 119598943Sluigi printf("%s%s", comma, p->s); 119698943Sluigi comma = ","; 119798943Sluigi } 119898943Sluigi printf(" %d", c->conn_limit); 119998943Sluigi } 120098943Sluigi break; 120198943Sluigi 120298943Sluigi default: 120398943Sluigi printf(" [opcode %d len %d]", 120498943Sluigi cmd->opcode, cmd->len); 120598943Sluigi } 120698943Sluigi } 120798943Sluigi if (cmd->len & F_OR) { 120898943Sluigi printf(" or"); 120998943Sluigi or_block = 1; 121098943Sluigi } else if (or_block) { 121198943Sluigi printf(" }"); 121298943Sluigi or_block = 0; 121398943Sluigi } 121498943Sluigi } 1215102087Sluigi show_prerequisites(&flags, HAVE_IP, 0); 121698943Sluigi 121798943Sluigi printf("\n"); 121898943Sluigi} 121998943Sluigi 122098943Sluigistatic void 1221112189Smaximshow_dyn_ipfw(ipfw_dyn_rule *d, int pcwidth, int bcwidth) 122298943Sluigi{ 122398943Sluigi struct protoent *pe; 122498943Sluigi struct in_addr a; 1225115793Sticso uint16_t rulenum; 122698943Sluigi 122798943Sluigi if (!do_expired) { 122898943Sluigi if (!d->expire && !(d->dyn_type == O_LIMIT_PARENT)) 122998943Sluigi return; 123098943Sluigi } 123198943Sluigi 1232115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 1233115793Sticso 1234115793Sticso printf("%05d %*llu %*llu (%ds)", rulenum, pcwidth, 1235115793Sticso align_uint64(&d->pcnt), bcwidth, 1236115793Sticso align_uint64(&d->bcnt), d->expire); 123798943Sluigi switch (d->dyn_type) { 123898943Sluigi case O_LIMIT_PARENT: 123998943Sluigi printf(" PARENT %d", d->count); 124098943Sluigi break; 124198943Sluigi case O_LIMIT: 124298943Sluigi printf(" LIMIT"); 124398943Sluigi break; 124498943Sluigi case O_KEEP_STATE: /* bidir, no mask */ 1245106505Smaxim printf(" STATE"); 124698943Sluigi break; 124798943Sluigi } 124898943Sluigi 124998943Sluigi if ((pe = getprotobynumber(d->id.proto)) != NULL) 125098943Sluigi printf(" %s", pe->p_name); 125198943Sluigi else 125298943Sluigi printf(" proto %u", d->id.proto); 125398943Sluigi 125498943Sluigi a.s_addr = htonl(d->id.src_ip); 125598943Sluigi printf(" %s %d", inet_ntoa(a), d->id.src_port); 125698943Sluigi 125798943Sluigi a.s_addr = htonl(d->id.dst_ip); 125898943Sluigi printf(" <-> %s %d", inet_ntoa(a), d->id.dst_port); 125998943Sluigi printf("\n"); 126098943Sluigi} 126198943Sluigi 126298943Sluigiint 126398943Sluigisort_q(const void *pa, const void *pb) 126498943Sluigi{ 126598943Sluigi int rev = (do_sort < 0); 126698943Sluigi int field = rev ? -do_sort : do_sort; 126798943Sluigi long long res = 0; 126898943Sluigi const struct dn_flow_queue *a = pa; 126998943Sluigi const struct dn_flow_queue *b = pb; 127098943Sluigi 127198943Sluigi switch (field) { 127298943Sluigi case 1: /* pkts */ 127398943Sluigi res = a->len - b->len; 127498943Sluigi break; 127598943Sluigi case 2: /* bytes */ 127698943Sluigi res = a->len_bytes - b->len_bytes; 127798943Sluigi break; 127898943Sluigi 127998943Sluigi case 3: /* tot pkts */ 128098943Sluigi res = a->tot_pkts - b->tot_pkts; 128198943Sluigi break; 128298943Sluigi 128398943Sluigi case 4: /* tot bytes */ 128498943Sluigi res = a->tot_bytes - b->tot_bytes; 128598943Sluigi break; 128698943Sluigi } 128798943Sluigi if (res < 0) 128898943Sluigi res = -1; 128998943Sluigi if (res > 0) 129098943Sluigi res = 1; 129198943Sluigi return (int)(rev ? res : -res); 129298943Sluigi} 129398943Sluigi 129498943Sluigistatic void 129598943Sluigilist_queues(struct dn_flow_set *fs, struct dn_flow_queue *q) 129698943Sluigi{ 129798943Sluigi int l; 129898943Sluigi 129998943Sluigi printf(" mask: 0x%02x 0x%08x/0x%04x -> 0x%08x/0x%04x\n", 130098943Sluigi fs->flow_mask.proto, 130198943Sluigi fs->flow_mask.src_ip, fs->flow_mask.src_port, 130298943Sluigi fs->flow_mask.dst_ip, fs->flow_mask.dst_port); 130398943Sluigi if (fs->rq_elements == 0) 130498943Sluigi return; 130598943Sluigi 130698943Sluigi printf("BKT Prot ___Source IP/port____ " 130798943Sluigi "____Dest. IP/port____ Tot_pkt/bytes Pkt/Byte Drp\n"); 130898943Sluigi if (do_sort != 0) 130998943Sluigi heapsort(q, fs->rq_elements, sizeof *q, sort_q); 131098943Sluigi for (l = 0; l < fs->rq_elements; l++) { 131198943Sluigi struct in_addr ina; 131298943Sluigi struct protoent *pe; 131398943Sluigi 131498943Sluigi ina.s_addr = htonl(q[l].id.src_ip); 131598943Sluigi printf("%3d ", q[l].hash_slot); 131698943Sluigi pe = getprotobynumber(q[l].id.proto); 131798943Sluigi if (pe) 131898943Sluigi printf("%-4s ", pe->p_name); 131998943Sluigi else 132098943Sluigi printf("%4u ", q[l].id.proto); 132198943Sluigi printf("%15s/%-5d ", 132298943Sluigi inet_ntoa(ina), q[l].id.src_port); 132398943Sluigi ina.s_addr = htonl(q[l].id.dst_ip); 132498943Sluigi printf("%15s/%-5d ", 132598943Sluigi inet_ntoa(ina), q[l].id.dst_port); 132698943Sluigi printf("%4qu %8qu %2u %4u %3u\n", 132798943Sluigi q[l].tot_pkts, q[l].tot_bytes, 132898943Sluigi q[l].len, q[l].len_bytes, q[l].drops); 132998943Sluigi if (verbose) 133098943Sluigi printf(" S %20qd F %20qd\n", 133198943Sluigi q[l].S, q[l].F); 133298943Sluigi } 133398943Sluigi} 133498943Sluigi 133598943Sluigistatic void 133698943Sluigiprint_flowset_parms(struct dn_flow_set *fs, char *prefix) 133798943Sluigi{ 133898943Sluigi int l; 133998943Sluigi char qs[30]; 134098943Sluigi char plr[30]; 134198943Sluigi char red[90]; /* Display RED parameters */ 134298943Sluigi 134398943Sluigi l = fs->qsize; 134498943Sluigi if (fs->flags_fs & DN_QSIZE_IS_BYTES) { 134598943Sluigi if (l >= 8192) 134698943Sluigi sprintf(qs, "%d KB", l / 1024); 134798943Sluigi else 134898943Sluigi sprintf(qs, "%d B", l); 134998943Sluigi } else 135098943Sluigi sprintf(qs, "%3d sl.", l); 135198943Sluigi if (fs->plr) 135298943Sluigi sprintf(plr, "plr %f", 1.0 * fs->plr / (double)(0x7fffffff)); 135398943Sluigi else 135498943Sluigi plr[0] = '\0'; 135598943Sluigi if (fs->flags_fs & DN_IS_RED) /* RED parameters */ 135698943Sluigi sprintf(red, 135798943Sluigi "\n\t %cRED w_q %f min_th %d max_th %d max_p %f", 135898943Sluigi (fs->flags_fs & DN_IS_GENTLE_RED) ? 'G' : ' ', 135998943Sluigi 1.0 * fs->w_q / (double)(1 << SCALE_RED), 136098943Sluigi SCALE_VAL(fs->min_th), 136198943Sluigi SCALE_VAL(fs->max_th), 136298943Sluigi 1.0 * fs->max_p / (double)(1 << SCALE_RED)); 136398943Sluigi else 136498943Sluigi sprintf(red, "droptail"); 136598943Sluigi 136698943Sluigi printf("%s %s%s %d queues (%d buckets) %s\n", 136798943Sluigi prefix, qs, plr, fs->rq_elements, fs->rq_size, red); 136898943Sluigi} 136998943Sluigi 137098943Sluigistatic void 137198943Sluigilist_pipes(void *data, int nbytes, int ac, char *av[]) 137298943Sluigi{ 137398943Sluigi u_long rulenum; 137498943Sluigi void *next = data; 137598943Sluigi struct dn_pipe *p = (struct dn_pipe *) data; 137698943Sluigi struct dn_flow_set *fs; 137798943Sluigi struct dn_flow_queue *q; 137898943Sluigi int l; 137998943Sluigi 138098943Sluigi if (ac > 0) 138198943Sluigi rulenum = strtoul(*av++, NULL, 10); 138298943Sluigi else 138398943Sluigi rulenum = 0; 138498943Sluigi for (; nbytes >= sizeof *p; p = (struct dn_pipe *)next) { 138598943Sluigi double b = p->bandwidth; 138698943Sluigi char buf[30]; 138798943Sluigi char prefix[80]; 138898943Sluigi 138998943Sluigi if (p->next != (struct dn_pipe *)DN_IS_PIPE) 139098943Sluigi break; /* done with pipes, now queues */ 139198943Sluigi 139298943Sluigi /* 139398943Sluigi * compute length, as pipe have variable size 139498943Sluigi */ 139598943Sluigi l = sizeof(*p) + p->fs.rq_elements * sizeof(*q); 139698943Sluigi next = (void *)p + l; 139798943Sluigi nbytes -= l; 139898943Sluigi 139998943Sluigi if (rulenum != 0 && rulenum != p->pipe_nr) 140098943Sluigi continue; 140198943Sluigi 140298943Sluigi /* 140398943Sluigi * Print rate (or clocking interface) 140498943Sluigi */ 140598943Sluigi if (p->if_name[0] != '\0') 140698943Sluigi sprintf(buf, "%s", p->if_name); 140798943Sluigi else if (b == 0) 140898943Sluigi sprintf(buf, "unlimited"); 140998943Sluigi else if (b >= 1000000) 141098943Sluigi sprintf(buf, "%7.3f Mbit/s", b/1000000); 141198943Sluigi else if (b >= 1000) 141298943Sluigi sprintf(buf, "%7.3f Kbit/s", b/1000); 141398943Sluigi else 141498943Sluigi sprintf(buf, "%7.3f bit/s ", b); 141598943Sluigi 141698943Sluigi sprintf(prefix, "%05d: %s %4d ms ", 141798943Sluigi p->pipe_nr, buf, p->delay); 141898943Sluigi print_flowset_parms(&(p->fs), prefix); 141998943Sluigi if (verbose) 142098943Sluigi printf(" V %20qd\n", p->V >> MY_M); 1421106505Smaxim 142298943Sluigi q = (struct dn_flow_queue *)(p+1); 142398943Sluigi list_queues(&(p->fs), q); 142498943Sluigi } 142598943Sluigi for (fs = next; nbytes >= sizeof *fs; fs = next) { 142698943Sluigi char prefix[80]; 142798943Sluigi 142898943Sluigi if (fs->next != (struct dn_flow_set *)DN_IS_QUEUE) 142998943Sluigi break; 143098943Sluigi l = sizeof(*fs) + fs->rq_elements * sizeof(*q); 143198943Sluigi next = (void *)fs + l; 143298943Sluigi nbytes -= l; 143398943Sluigi q = (struct dn_flow_queue *)(fs+1); 143498943Sluigi sprintf(prefix, "q%05d: weight %d pipe %d ", 143598943Sluigi fs->fs_nr, fs->weight, fs->parent_nr); 143698943Sluigi print_flowset_parms(fs, prefix); 143798943Sluigi list_queues(fs, q); 143898943Sluigi } 143998943Sluigi} 144098943Sluigi 1441101978Sluigi/* 1442101978Sluigi * This one handles all set-related commands 1443101978Sluigi * ipfw set { show | enable | disable } 1444101978Sluigi * ipfw set swap X Y 1445101978Sluigi * ipfw set move X to Y 1446101978Sluigi * ipfw set move rule X to Y 1447101978Sluigi */ 144898943Sluigistatic void 1449101978Sluigisets_handler(int ac, char *av[]) 1450101978Sluigi{ 1451101978Sluigi u_int32_t set_disable, masks[2]; 1452101978Sluigi int i, nbytes; 1453101978Sluigi u_int16_t rulenum; 1454101978Sluigi u_int8_t cmd, new_set; 1455101978Sluigi 1456101978Sluigi ac--; 1457101978Sluigi av++; 1458101978Sluigi 1459101978Sluigi if (!ac) 1460101978Sluigi errx(EX_USAGE, "set needs command"); 1461101978Sluigi if (!strncmp(*av, "show", strlen(*av)) ) { 1462101978Sluigi void *data; 1463101978Sluigi char *msg; 1464101978Sluigi 1465101978Sluigi nbytes = sizeof(struct ip_fw); 1466101978Sluigi if ((data = malloc(nbytes)) == NULL) 1467101978Sluigi err(EX_OSERR, "malloc"); 1468101978Sluigi if (getsockopt(s, IPPROTO_IP, IP_FW_GET, data, &nbytes) < 0) 1469101978Sluigi err(EX_OSERR, "getsockopt(IP_FW_GET)"); 1470115793Sticso bcopy(&((struct ip_fw *)data)->next_rule, 1471115793Sticso &set_disable, sizeof(set_disable)); 1472101978Sluigi 1473115793Sticso 1474101978Sluigi for (i = 0, msg = "disable" ; i < 31; i++) 1475101978Sluigi if ( (set_disable & (1<<i))) { 1476101978Sluigi printf("%s %d", msg, i); 1477101978Sluigi msg = ""; 1478101978Sluigi } 1479101978Sluigi msg = (set_disable) ? " enable" : "enable"; 1480101978Sluigi for (i = 0; i < 31; i++) 1481101978Sluigi if ( !(set_disable & (1<<i))) { 1482101978Sluigi printf("%s %d", msg, i); 1483101978Sluigi msg = ""; 1484101978Sluigi } 1485101978Sluigi printf("\n"); 1486101978Sluigi } else if (!strncmp(*av, "swap", strlen(*av))) { 1487101978Sluigi ac--; av++; 1488101978Sluigi if (ac != 2) 1489101978Sluigi errx(EX_USAGE, "set swap needs 2 set numbers\n"); 1490101978Sluigi rulenum = atoi(av[0]); 1491101978Sluigi new_set = atoi(av[1]); 1492101978Sluigi if (!isdigit(*(av[0])) || rulenum > 30) 1493101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[0]); 1494101978Sluigi if (!isdigit(*(av[1])) || new_set > 30) 1495101978Sluigi errx(EX_DATAERR, "invalid set number %s\n", av[1]); 1496101978Sluigi masks[0] = (4 << 24) | (new_set << 16) | (rulenum); 1497101978Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, 1498101978Sluigi masks, sizeof(u_int32_t)); 1499101978Sluigi } else if (!strncmp(*av, "move", strlen(*av))) { 1500101978Sluigi ac--; av++; 1501101978Sluigi if (ac && !strncmp(*av, "rule", strlen(*av))) { 1502101978Sluigi cmd = 2; 1503101978Sluigi ac--; av++; 1504101978Sluigi } else 1505101978Sluigi cmd = 3; 1506101978Sluigi if (ac != 3 || strncmp(av[1], "to", strlen(*av))) 1507101978Sluigi errx(EX_USAGE, "syntax: set move [rule] X to Y\n"); 1508101978Sluigi rulenum = atoi(av[0]); 1509101978Sluigi new_set = atoi(av[2]); 1510101978Sluigi if (!isdigit(*(av[0])) || (cmd == 3 && rulenum > 30) || 1511101978Sluigi (cmd == 2 && rulenum == 65535) ) 1512101978Sluigi errx(EX_DATAERR, "invalid source number %s\n", av[0]); 1513101978Sluigi if (!isdigit(*(av[2])) || new_set > 30) 1514101978Sluigi errx(EX_DATAERR, "invalid dest. set %s\n", av[1]); 1515101978Sluigi masks[0] = (cmd << 24) | (new_set << 16) | (rulenum); 1516101978Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, 1517101978Sluigi masks, sizeof(u_int32_t)); 1518101978Sluigi } else if (!strncmp(*av, "disable", strlen(*av)) || 1519101978Sluigi !strncmp(*av, "enable", strlen(*av)) ) { 1520101978Sluigi int which = !strncmp(*av, "enable", strlen(*av)) ? 1 : 0; 1521101978Sluigi 1522101978Sluigi ac--; av++; 1523101978Sluigi masks[0] = masks[1] = 0; 1524101978Sluigi 1525101978Sluigi while (ac) { 1526101978Sluigi if (isdigit(**av)) { 1527101978Sluigi i = atoi(*av); 1528101978Sluigi if (i < 0 || i > 30) 1529101978Sluigi errx(EX_DATAERR, 1530101978Sluigi "invalid set number %d\n", i); 1531101978Sluigi masks[which] |= (1<<i); 1532101978Sluigi } else if (!strncmp(*av, "disable", strlen(*av))) 1533101978Sluigi which = 0; 1534101978Sluigi else if (!strncmp(*av, "enable", strlen(*av))) 1535101978Sluigi which = 1; 1536101978Sluigi else 1537101978Sluigi errx(EX_DATAERR, 1538101978Sluigi "invalid set command %s\n", *av); 1539101978Sluigi av++; ac--; 1540101978Sluigi } 1541101978Sluigi if ( (masks[0] & masks[1]) != 0 ) 1542101978Sluigi errx(EX_DATAERR, 1543101978Sluigi "cannot enable and disable the same set\n"); 1544101978Sluigi 1545101978Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, masks, sizeof(masks)); 1546101978Sluigi if (i) 1547101978Sluigi warn("set enable/disable: setsockopt(IP_FW_DEL)"); 1548101978Sluigi } else 1549101978Sluigi errx(EX_USAGE, "invalid set command %s\n", *av); 1550101978Sluigi} 1551101978Sluigi 1552101978Sluigistatic void 1553109126Sdillonsysctl_handler(int ac, char *av[], int which) 1554109126Sdillon{ 1555109126Sdillon ac--; 1556109126Sdillon av++; 1557109126Sdillon 1558109126Sdillon if (*av == NULL) { 1559109126Sdillon warnx("missing keyword to enable/disable\n"); 1560109126Sdillon } else if (strncmp(*av, "firewall", strlen(*av)) == 0) { 1561109126Sdillon sysctlbyname("net.inet.ip.fw.enable", NULL, 0, &which, sizeof(which)); 1562109126Sdillon } else if (strncmp(*av, "one_pass", strlen(*av)) == 0) { 1563109126Sdillon sysctlbyname("net.inet.ip.fw.one_pass", NULL, 0, &which, sizeof(which)); 1564109126Sdillon } else if (strncmp(*av, "debug", strlen(*av)) == 0) { 1565109126Sdillon sysctlbyname("net.inet.ip.fw.debug", NULL, 0, &which, sizeof(which)); 1566109126Sdillon } else if (strncmp(*av, "verbose", strlen(*av)) == 0) { 1567109126Sdillon sysctlbyname("net.inet.ip.fw.verbose", NULL, 0, &which, sizeof(which)); 1568109126Sdillon } else if (strncmp(*av, "dyn_keepalive", strlen(*av)) == 0) { 1569109126Sdillon sysctlbyname("net.inet.ip.fw.dyn_keepalive", NULL, 0, &which, sizeof(which)); 1570109126Sdillon } else { 1571109126Sdillon warnx("unrecognize enable/disable keyword: %s\n", *av); 1572109126Sdillon } 1573109126Sdillon} 1574109126Sdillon 1575109126Sdillonstatic void 157698943Sluigilist(int ac, char *av[]) 157798943Sluigi{ 157898943Sluigi struct ip_fw *r; 157998943Sluigi ipfw_dyn_rule *dynrules, *d; 158098943Sluigi 158198943Sluigi void *lim, *data = NULL; 1582112189Smaxim int bcwidth, n, nbytes, nstat, ndyn, pcwidth, width; 158398943Sluigi int exitval = EX_OK; 158498943Sluigi int lac; 158598943Sluigi char **lav; 158698943Sluigi u_long rnum; 158798943Sluigi char *endptr; 158898943Sluigi int seen = 0; 158998943Sluigi 159098943Sluigi const int ocmd = do_pipe ? IP_DUMMYNET_GET : IP_FW_GET; 159198943Sluigi int nalloc = 1024; /* start somewhere... */ 159298943Sluigi 159398943Sluigi ac--; 159498943Sluigi av++; 159598943Sluigi 159698943Sluigi /* get rules or pipes from kernel, resizing array as necessary */ 159798943Sluigi nbytes = nalloc; 159898943Sluigi 159998943Sluigi while (nbytes >= nalloc) { 160098943Sluigi nalloc = nalloc * 2 + 200; 160198943Sluigi nbytes = nalloc; 160298943Sluigi if ((data = realloc(data, nbytes)) == NULL) 160398943Sluigi err(EX_OSERR, "realloc"); 160498943Sluigi if (getsockopt(s, IPPROTO_IP, ocmd, data, &nbytes) < 0) 160598943Sluigi err(EX_OSERR, "getsockopt(IP_%s_GET)", 160698943Sluigi do_pipe ? "DUMMYNET" : "FW"); 160798943Sluigi } 160898943Sluigi 160998943Sluigi if (do_pipe) { 161098943Sluigi list_pipes(data, nbytes, ac, av); 161198943Sluigi goto done; 161298943Sluigi } 161398943Sluigi 161498943Sluigi /* 161598943Sluigi * Count static rules. They have variable size so we 161698943Sluigi * need to scan the list to count them. 161798943Sluigi */ 161898943Sluigi for (nstat = 1, r = data, lim = data + nbytes; 161998943Sluigi r->rulenum < 65535 && (void *)r < lim; 162098943Sluigi ++nstat, r = (void *)r + RULESIZE(r) ) 162198943Sluigi ; /* nothing */ 162298943Sluigi 162398943Sluigi /* 162498943Sluigi * Count dynamic rules. This is easier as they have 162598943Sluigi * fixed size. 162698943Sluigi */ 162798943Sluigi r = (void *)r + RULESIZE(r); 162898943Sluigi dynrules = (ipfw_dyn_rule *)r ; 162998943Sluigi n = (void *)r - data; 163098943Sluigi ndyn = (nbytes - n) / sizeof *dynrules; 163198943Sluigi 1632112189Smaxim /* if showing stats, figure out column widths ahead of time */ 1633112189Smaxim bcwidth = pcwidth = 0; 1634112189Smaxim if (do_acct) { 1635112189Smaxim for (n = 0, r = data; n < nstat; 1636112189Smaxim n++, r = (void *)r + RULESIZE(r)) { 1637112189Smaxim /* packet counter */ 1638115793Sticso width = snprintf(NULL, 0, "%llu", 1639115793Sticso align_uint64(&r->pcnt)); 1640112189Smaxim if (width > pcwidth) 1641112189Smaxim pcwidth = width; 1642112189Smaxim 1643112189Smaxim /* byte counter */ 1644115793Sticso width = snprintf(NULL, 0, "%llu", 1645115793Sticso align_uint64(&r->bcnt)); 1646112189Smaxim if (width > bcwidth) 1647112189Smaxim bcwidth = width; 1648112189Smaxim } 1649112189Smaxim } 1650112189Smaxim if (do_dynamic && ndyn) { 1651112189Smaxim for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1652115793Sticso width = snprintf(NULL, 0, "%llu", 1653115793Sticso align_uint64(&d->pcnt)); 1654112189Smaxim if (width > pcwidth) 1655112189Smaxim pcwidth = width; 1656112189Smaxim 1657115793Sticso width = snprintf(NULL, 0, "%llu", 1658115793Sticso align_uint64(&d->bcnt)); 1659112189Smaxim if (width > bcwidth) 1660112189Smaxim bcwidth = width; 1661112189Smaxim } 1662112189Smaxim } 166398943Sluigi /* if no rule numbers were specified, list all rules */ 166498943Sluigi if (ac == 0) { 166598943Sluigi for (n = 0, r = data; n < nstat; 166698943Sluigi n++, r = (void *)r + RULESIZE(r) ) 1667112189Smaxim show_ipfw(r, pcwidth, bcwidth); 166898943Sluigi 166998943Sluigi if (do_dynamic && ndyn) { 167098943Sluigi printf("## Dynamic rules (%d):\n", ndyn); 167198943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) 1672112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 167398943Sluigi } 167498943Sluigi goto done; 167598943Sluigi } 167698943Sluigi 167798943Sluigi /* display specific rules requested on command line */ 167898943Sluigi 167998943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 168098943Sluigi /* convert command line rule # */ 168198943Sluigi rnum = strtoul(*lav++, &endptr, 10); 168298943Sluigi if (*endptr) { 168398943Sluigi exitval = EX_USAGE; 168498943Sluigi warnx("invalid rule number: %s", *(lav - 1)); 168598943Sluigi continue; 168698943Sluigi } 168798943Sluigi for (n = seen = 0, r = data; n < nstat; 168898943Sluigi n++, r = (void *)r + RULESIZE(r) ) { 168998943Sluigi if (r->rulenum > rnum) 169098943Sluigi break; 169198943Sluigi if (r->rulenum == rnum) { 1692112189Smaxim show_ipfw(r, pcwidth, bcwidth); 169398943Sluigi seen = 1; 169498943Sluigi } 169598943Sluigi } 169698943Sluigi if (!seen) { 169798943Sluigi /* give precedence to other error(s) */ 169898943Sluigi if (exitval == EX_OK) 169998943Sluigi exitval = EX_UNAVAILABLE; 170098943Sluigi warnx("rule %lu does not exist", rnum); 170198943Sluigi } 170298943Sluigi } 170398943Sluigi 170498943Sluigi if (do_dynamic && ndyn) { 170598943Sluigi printf("## Dynamic rules:\n"); 170698943Sluigi for (lac = ac, lav = av; lac != 0; lac--) { 170798943Sluigi rnum = strtoul(*lav++, &endptr, 10); 170898943Sluigi if (*endptr) 170998943Sluigi /* already warned */ 171098943Sluigi continue; 171198943Sluigi for (n = 0, d = dynrules; n < ndyn; n++, d++) { 1712115793Sticso uint16_t rulenum; 1713115793Sticso 1714115793Sticso bcopy(&d->rule, &rulenum, sizeof(rulenum)); 1715115793Sticso if (rulenum > rnum) 171698943Sluigi break; 1717115793Sticso if (rulenum == rnum) 1718112189Smaxim show_dyn_ipfw(d, pcwidth, bcwidth); 171998943Sluigi } 172098943Sluigi } 172198943Sluigi } 172298943Sluigi 172398943Sluigi ac = 0; 172498943Sluigi 172598943Sluigidone: 172698943Sluigi free(data); 172798943Sluigi 172898943Sluigi if (exitval != EX_OK) 172998943Sluigi exit(exitval); 173098943Sluigi} 173198943Sluigi 173298943Sluigistatic void 173398943Sluigishow_usage(void) 173498943Sluigi{ 173598943Sluigi fprintf(stderr, "usage: ipfw [options]\n" 173698943Sluigi" add [number] rule\n" 173798943Sluigi" pipe number config [pipeconfig]\n" 173898943Sluigi" queue number config [queueconfig]\n" 173998943Sluigi" [pipe] flush\n" 174098943Sluigi" [pipe] delete number ...\n" 174198943Sluigi" [pipe] {list|show} [number ...]\n" 174298943Sluigi" {zero|resetlog} [number ...]\n" 174398943Sluigi"do \"ipfw -h\" or see ipfw manpage for details\n" 174498943Sluigi); 174598943Sluigi 174698943Sluigi exit(EX_USAGE); 174798943Sluigi} 174898943Sluigi 174998943Sluigistatic void 175098943Sluigihelp(void) 175198943Sluigi{ 1752106505Smaxim 175398943Sluigi fprintf(stderr, "ipfw syntax summary:\n" 175498943Sluigi"ipfw add [N] [prob {0..1}] ACTION [log [logamount N]] ADDR OPTIONS\n" 175598943Sluigi"ipfw {pipe|queue} N config BODY\n" 175698943Sluigi"ipfw [pipe] {zero|delete|show} [N{,N}]\n" 175798943Sluigi"\n" 175898943Sluigi"RULE: [1..] [PROB] BODY\n" 175998943Sluigi"RULENUM: INTEGER(1..65534)\n" 176098943Sluigi"PROB: prob REAL(0..1)\n" 176198943Sluigi"BODY: check-state [LOG] (no body) |\n" 176298943Sluigi" ACTION [LOG] MATCH_ADDR [OPTION_LIST]\n" 176398943Sluigi"ACTION: check-state | allow | count | deny | reject | skipto N |\n" 176498943Sluigi" {divert|tee} PORT | forward ADDR | pipe N | queue N\n" 176598943Sluigi"ADDR: [ MAC dst src ether_type ] \n" 176698943Sluigi" [ from IPLIST [ PORT ] to IPLIST [ PORTLIST ] ]\n" 176798943Sluigi"IPLIST: IPADDR | ( IPADDR or ... or IPADDR )\n" 176898943Sluigi"IPADDR: [not] { any | me | ip | ip/bits | ip:mask | ip/bits{x,y,z} }\n" 176998943Sluigi"OPTION_LIST: OPTION [,OPTION_LIST]\n" 177098943Sluigi); 177198943Sluigiexit(0); 177298943Sluigi} 177398943Sluigi 177498943Sluigi 177598943Sluigistatic int 177698943Sluigilookup_host (char *host, struct in_addr *ipaddr) 177798943Sluigi{ 177898943Sluigi struct hostent *he; 177998943Sluigi 178098943Sluigi if (!inet_aton(host, ipaddr)) { 178198943Sluigi if ((he = gethostbyname(host)) == NULL) 178298943Sluigi return(-1); 178398943Sluigi *ipaddr = *(struct in_addr *)he->h_addr_list[0]; 178498943Sluigi } 178598943Sluigi return(0); 178698943Sluigi} 178798943Sluigi 178898943Sluigi/* 178998943Sluigi * fills the addr and mask fields in the instruction as appropriate from av. 179098943Sluigi * Update length as appropriate. 179198943Sluigi * The following formats are allowed: 179298943Sluigi * any matches any IP. Actually returns an empty instruction. 179398943Sluigi * me returns O_IP_*_ME 179498943Sluigi * 1.2.3.4 single IP address 179598943Sluigi * 1.2.3.4:5.6.7.8 address:mask 179698943Sluigi * 1.2.3.4/24 address/mask 179798943Sluigi * 1.2.3.4/26{1,6,5,4,23} set of addresses in a subnet 179898943Sluigi */ 179998943Sluigistatic void 180098943Sluigifill_ip(ipfw_insn_ip *cmd, char *av) 180198943Sluigi{ 180298943Sluigi char *p = 0, md = 0; 180398943Sluigi u_int32_t i; 180498943Sluigi 180598943Sluigi cmd->o.len &= ~F_LEN_MASK; /* zero len */ 180698943Sluigi 180798943Sluigi if (!strncmp(av, "any", strlen(av))) 180898943Sluigi return; 180998943Sluigi 181098943Sluigi if (!strncmp(av, "me", strlen(av))) { 181198943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn); 181298943Sluigi return; 181398943Sluigi } 181498943Sluigi 181598943Sluigi p = strchr(av, '/'); 181698943Sluigi if (!p) 181798943Sluigi p = strchr(av, ':'); 181898943Sluigi if (p) { 181998943Sluigi md = *p; 182098943Sluigi *p++ = '\0'; 182198943Sluigi } 182298943Sluigi 182398943Sluigi if (lookup_host(av, &cmd->addr) != 0) 182498943Sluigi errx(EX_NOHOST, "hostname ``%s'' unknown", av); 182598943Sluigi switch (md) { 182698943Sluigi case ':': 182798943Sluigi if (!inet_aton(p, &cmd->mask)) 182898943Sluigi errx(EX_DATAERR, "bad netmask ``%s''", p); 182998943Sluigi break; 183098943Sluigi case '/': 183198943Sluigi i = atoi(p); 183298943Sluigi if (i == 0) 183398943Sluigi cmd->mask.s_addr = htonl(0); 183498943Sluigi else if (i > 32) 183598943Sluigi errx(EX_DATAERR, "bad width ``%s''", p); 183698943Sluigi else 183798943Sluigi cmd->mask.s_addr = htonl(~0 << (32 - i)); 183898943Sluigi break; 183998943Sluigi default: 184098943Sluigi cmd->mask.s_addr = htonl(~0); 184198943Sluigi break; 184298943Sluigi } 184398943Sluigi cmd->addr.s_addr &= cmd->mask.s_addr; 184498943Sluigi /* 184598943Sluigi * now look if we have a set of addresses. They are stored as follows: 184698943Sluigi * arg1 is the set size (powers of 2, 2..256) 184798943Sluigi * addr is the base address IN HOST FORMAT 184898943Sluigi * mask.. is an array of u_int32_t with bits set. 184998943Sluigi */ 185098943Sluigi if (p) 185198943Sluigi p = strchr(p, '{'); 185298943Sluigi if (p) { /* fetch addresses */ 185398943Sluigi u_int32_t *d; 185498943Sluigi int low, high; 185598943Sluigi int i = contigmask((u_char *)&(cmd->mask), 32); 185698943Sluigi 185798943Sluigi if (i < 24 || i > 31) { 185898943Sluigi fprintf(stderr, "invalid set with mask %d\n", 185998943Sluigi i); 186098943Sluigi exit(0); 186198943Sluigi } 186298943Sluigi cmd->o.arg1 = 1<<(32-i); 186398943Sluigi cmd->addr.s_addr = ntohl(cmd->addr.s_addr); 186498943Sluigi d = (u_int32_t *)&cmd->mask; 186598943Sluigi cmd->o.opcode = O_IP_DST_SET; /* default */ 186698943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32) + (cmd->o.arg1+31)/32; 1867101117Sluigi for (i = 0; i < (cmd->o.arg1+31)/32 ; i++) 186898943Sluigi d[i] = 0; /* clear masks */ 186998943Sluigi 187098943Sluigi av = p+1; 187198943Sluigi low = cmd->addr.s_addr & 0xff; 187298943Sluigi high = low + cmd->o.arg1 - 1; 187398943Sluigi while (isdigit(*av)) { 187498943Sluigi char *s; 187598943Sluigi u_int16_t a = strtol(av, &s, 0); 187698943Sluigi 187798943Sluigi if (s == av) /* no parameter */ 187898943Sluigi break; 187998943Sluigi if (a < low || a > high) { 188098943Sluigi fprintf(stderr, "addr %d out of range [%d-%d]\n", 188198943Sluigi a, low, high); 188298943Sluigi exit(0); 188398943Sluigi } 188498943Sluigi a -= low; 188598943Sluigi d[ a/32] |= 1<<(a & 31); 188698943Sluigi if (*s != ',') 188798943Sluigi break; 188898943Sluigi av = s+1; 188998943Sluigi } 189098943Sluigi return; 189198943Sluigi } 189298943Sluigi 189398943Sluigi if (cmd->mask.s_addr == 0) { /* any */ 189498943Sluigi if (cmd->o.len & F_NOT) 189598943Sluigi errx(EX_DATAERR, "not any never matches"); 189698943Sluigi else /* useless, nuke it */ 189798943Sluigi return; 189898943Sluigi } else if (cmd->mask.s_addr == IP_MASK_ALL) /* one IP */ 189998943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_u32); 190098943Sluigi else /* addr/mask */ 190198943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_ip); 190298943Sluigi} 190398943Sluigi 190498943Sluigi 190598943Sluigi/* 190698943Sluigi * helper function to process a set of flags and set bits in the 190798943Sluigi * appropriate masks. 190898943Sluigi */ 190998943Sluigistatic void 191098943Sluigifill_flags(ipfw_insn *cmd, enum ipfw_opcodes opcode, 191198943Sluigi struct _s_x *flags, char *p) 191298943Sluigi{ 191398943Sluigi u_int8_t set=0, clear=0; 191498943Sluigi 191598943Sluigi while (p && *p) { 191698943Sluigi char *q; /* points to the separator */ 191798943Sluigi int val; 191898943Sluigi u_int8_t *which; /* mask we are working on */ 191998943Sluigi 192098943Sluigi if (*p == '!') { 192198943Sluigi p++; 192298943Sluigi which = &clear; 192398943Sluigi } else 192498943Sluigi which = &set; 192598943Sluigi q = strchr(p, ','); 192698943Sluigi if (q) 192798943Sluigi *q++ = '\0'; 192898943Sluigi val = match_token(flags, p); 192998943Sluigi if (val <= 0) 193098943Sluigi errx(EX_DATAERR, "invalid flag %s", p); 193198943Sluigi *which |= (u_int8_t)val; 193298943Sluigi p = q; 193398943Sluigi } 193498943Sluigi cmd->opcode = opcode; 193598943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | 1; 193698943Sluigi cmd->arg1 = (set & 0xff) | ( (clear & 0xff) << 8); 193798943Sluigi} 193898943Sluigi 193998943Sluigi 194098943Sluigistatic void 194198943Sluigidelete(int ac, char *av[]) 194298943Sluigi{ 1943101978Sluigi u_int32_t rulenum; 194498943Sluigi struct dn_pipe pipe; 194598943Sluigi int i; 194698943Sluigi int exitval = EX_OK; 1947101628Sluigi int do_set = 0; 194898943Sluigi 194998943Sluigi memset(&pipe, 0, sizeof pipe); 195098943Sluigi 195198943Sluigi av++; ac--; 1952101641Sluigi if (ac > 0 && !strncmp(*av, "set", strlen(*av))) { 1953101978Sluigi do_set = 1; /* delete set */ 1954101628Sluigi ac--; av++; 1955101978Sluigi } 195698943Sluigi 195798943Sluigi /* Rule number */ 195898943Sluigi while (ac && isdigit(**av)) { 195998943Sluigi i = atoi(*av); av++; ac--; 196098943Sluigi if (do_pipe) { 196198943Sluigi if (do_pipe == 1) 196298943Sluigi pipe.pipe_nr = i; 196398943Sluigi else 196498943Sluigi pipe.fs.fs_nr = i; 196598943Sluigi i = setsockopt(s, IPPROTO_IP, IP_DUMMYNET_DEL, 196698943Sluigi &pipe, sizeof pipe); 196798943Sluigi if (i) { 196898943Sluigi exitval = 1; 196998943Sluigi warn("rule %u: setsockopt(IP_DUMMYNET_DEL)", 197098943Sluigi do_pipe == 1 ? pipe.pipe_nr : 197198943Sluigi pipe.fs.fs_nr); 197298943Sluigi } 197398943Sluigi } else { 1974101978Sluigi rulenum = (i & 0xffff) | (do_set << 24); 197598943Sluigi i = setsockopt(s, IPPROTO_IP, IP_FW_DEL, &rulenum, 197698943Sluigi sizeof rulenum); 197798943Sluigi if (i) { 197898943Sluigi exitval = EX_UNAVAILABLE; 197998943Sluigi warn("rule %u: setsockopt(IP_FW_DEL)", 198098943Sluigi rulenum); 198198943Sluigi } 198298943Sluigi } 198398943Sluigi } 198498943Sluigi if (exitval != EX_OK) 198598943Sluigi exit(exitval); 198698943Sluigi} 198798943Sluigi 198898943Sluigi 198998943Sluigi/* 199098943Sluigi * fill the interface structure. We do not check the name as we can 199198943Sluigi * create interfaces dynamically, so checking them at insert time 199298943Sluigi * makes relatively little sense. 199398943Sluigi * A '*' following the name means any unit. 199498943Sluigi */ 199598943Sluigistatic void 199698943Sluigifill_iface(ipfw_insn_if *cmd, char *arg) 199798943Sluigi{ 199898943Sluigi cmd->name[0] = '\0'; 199998943Sluigi cmd->o.len |= F_INSN_SIZE(ipfw_insn_if); 200098943Sluigi 200198943Sluigi /* Parse the interface or address */ 200298943Sluigi if (!strcmp(arg, "any")) 200398943Sluigi cmd->o.len = 0; /* effectively ignore this command */ 200498943Sluigi else if (!isdigit(*arg)) { 200598943Sluigi char *q; 200698943Sluigi 200798943Sluigi strncpy(cmd->name, arg, sizeof(cmd->name)); 200898943Sluigi cmd->name[sizeof(cmd->name) - 1] = '\0'; 200998943Sluigi /* find first digit or wildcard */ 201098943Sluigi for (q = cmd->name; *q && !isdigit(*q) && *q != '*'; q++) 201198943Sluigi continue; 201298943Sluigi cmd->p.unit = (*q == '*') ? -1 : atoi(q); 201398943Sluigi *q = '\0'; 201498943Sluigi } else if (!inet_aton(arg, &cmd->p.ip)) 201598943Sluigi errx(EX_DATAERR, "bad ip address ``%s''", arg); 201698943Sluigi} 201798943Sluigi 201898943Sluigi/* 201998943Sluigi * the following macro returns an error message if we run out of 202098943Sluigi * arguments. 202198943Sluigi */ 202298943Sluigi#define NEED1(msg) {if (!ac) errx(EX_USAGE, msg);} 202398943Sluigi 202498943Sluigistatic void 202598943Sluigiconfig_pipe(int ac, char **av) 202698943Sluigi{ 202798943Sluigi struct dn_pipe pipe; 202898943Sluigi int i; 202998943Sluigi char *end; 203098943Sluigi u_int32_t a; 203198943Sluigi void *par = NULL; 203298943Sluigi 203398943Sluigi memset(&pipe, 0, sizeof pipe); 203498943Sluigi 203598943Sluigi av++; ac--; 203698943Sluigi /* Pipe number */ 203798943Sluigi if (ac && isdigit(**av)) { 203898943Sluigi i = atoi(*av); av++; ac--; 203998943Sluigi if (do_pipe == 1) 204098943Sluigi pipe.pipe_nr = i; 204198943Sluigi else 204298943Sluigi pipe.fs.fs_nr = i; 204398943Sluigi } 204499475Sluigi while (ac > 0) { 204598943Sluigi double d; 204698943Sluigi int tok = match_token(dummynet_params, *av); 204798943Sluigi ac--; av++; 204898943Sluigi 204998943Sluigi switch(tok) { 2050101978Sluigi case TOK_NOERROR: 2051101978Sluigi pipe.fs.flags_fs |= DN_NOERROR; 2052101978Sluigi break; 2053101978Sluigi 205498943Sluigi case TOK_PLR: 205598943Sluigi NEED1("plr needs argument 0..1\n"); 205698943Sluigi d = strtod(av[0], NULL); 205798943Sluigi if (d > 1) 205898943Sluigi d = 1; 205998943Sluigi else if (d < 0) 206098943Sluigi d = 0; 206198943Sluigi pipe.fs.plr = (int)(d*0x7fffffff); 206298943Sluigi ac--; av++; 206398943Sluigi break; 206498943Sluigi 206598943Sluigi case TOK_QUEUE: 206698943Sluigi NEED1("queue needs queue size\n"); 206798943Sluigi end = NULL; 206898943Sluigi pipe.fs.qsize = strtoul(av[0], &end, 0); 206998943Sluigi if (*end == 'K' || *end == 'k') { 207098943Sluigi pipe.fs.flags_fs |= DN_QSIZE_IS_BYTES; 207198943Sluigi pipe.fs.qsize *= 1024; 207298943Sluigi } else if (*end == 'B' || !strncmp(end, "by", 2)) { 207398943Sluigi pipe.fs.flags_fs |= DN_QSIZE_IS_BYTES; 207498943Sluigi } 207598943Sluigi ac--; av++; 207698943Sluigi break; 207798943Sluigi 207898943Sluigi case TOK_BUCKETS: 207998943Sluigi NEED1("buckets needs argument\n"); 208098943Sluigi pipe.fs.rq_size = strtoul(av[0], NULL, 0); 208198943Sluigi ac--; av++; 208298943Sluigi break; 208398943Sluigi 208498943Sluigi case TOK_MASK: 208598943Sluigi NEED1("mask needs mask specifier\n"); 208698943Sluigi /* 208798943Sluigi * per-flow queue, mask is dst_ip, dst_port, 208898943Sluigi * src_ip, src_port, proto measured in bits 208998943Sluigi */ 209098943Sluigi par = NULL; 209198943Sluigi 209298943Sluigi pipe.fs.flow_mask.dst_ip = 0; 209398943Sluigi pipe.fs.flow_mask.src_ip = 0; 209498943Sluigi pipe.fs.flow_mask.dst_port = 0; 209598943Sluigi pipe.fs.flow_mask.src_port = 0; 209698943Sluigi pipe.fs.flow_mask.proto = 0; 209798943Sluigi end = NULL; 209898943Sluigi 209998943Sluigi while (ac >= 1) { 210098943Sluigi u_int32_t *p32 = NULL; 210198943Sluigi u_int16_t *p16 = NULL; 210298943Sluigi 210398943Sluigi tok = match_token(dummynet_params, *av); 210498943Sluigi ac--; av++; 210598943Sluigi switch(tok) { 210698943Sluigi case TOK_ALL: 210798943Sluigi /* 210898943Sluigi * special case, all bits significant 210998943Sluigi */ 211098943Sluigi pipe.fs.flow_mask.dst_ip = ~0; 211198943Sluigi pipe.fs.flow_mask.src_ip = ~0; 211298943Sluigi pipe.fs.flow_mask.dst_port = ~0; 211398943Sluigi pipe.fs.flow_mask.src_port = ~0; 211498943Sluigi pipe.fs.flow_mask.proto = ~0; 211598943Sluigi pipe.fs.flags_fs |= DN_HAVE_FLOW_MASK; 211698943Sluigi goto end_mask; 211798943Sluigi 211898943Sluigi case TOK_DSTIP: 211998943Sluigi p32 = &pipe.fs.flow_mask.dst_ip; 212098943Sluigi break; 212198943Sluigi 212298943Sluigi case TOK_SRCIP: 212398943Sluigi p32 = &pipe.fs.flow_mask.src_ip; 212498943Sluigi break; 212598943Sluigi 212698943Sluigi case TOK_DSTPORT: 212798943Sluigi p16 = &pipe.fs.flow_mask.dst_port; 212898943Sluigi break; 212998943Sluigi 213098943Sluigi case TOK_SRCPORT: 213198943Sluigi p16 = &pipe.fs.flow_mask.src_port; 213298943Sluigi break; 213398943Sluigi 213498943Sluigi case TOK_PROTO: 213598943Sluigi break; 213698943Sluigi 213798943Sluigi default: 213898943Sluigi ac++; av--; /* backtrack */ 213998943Sluigi goto end_mask; 214098943Sluigi } 214198943Sluigi if (ac < 1) 214298943Sluigi errx(EX_USAGE, "mask: value missing"); 214398943Sluigi if (*av[0] == '/') { 214498943Sluigi a = strtoul(av[0]+1, &end, 0); 214598943Sluigi a = (a == 32) ? ~0 : (1 << a) - 1; 2146106505Smaxim } else 214799909Sluigi a = strtoul(av[0], &end, 0); 214898943Sluigi if (p32 != NULL) 214998943Sluigi *p32 = a; 215098943Sluigi else if (p16 != NULL) { 215198943Sluigi if (a > 65535) 215298943Sluigi errx(EX_DATAERR, 215398943Sluigi "mask: must be 16 bit"); 215498943Sluigi *p16 = (u_int16_t)a; 215598943Sluigi } else { 215698943Sluigi if (a > 255) 215798943Sluigi errx(EX_DATAERR, 215898943Sluigi "mask: must be 8 bit"); 215998943Sluigi pipe.fs.flow_mask.proto = (u_int8_t)a; 216098943Sluigi } 216198943Sluigi if (a != 0) 216298943Sluigi pipe.fs.flags_fs |= DN_HAVE_FLOW_MASK; 216398943Sluigi ac--; av++; 216498943Sluigi } /* end while, config masks */ 216598943Sluigiend_mask: 216698943Sluigi break; 216798943Sluigi 216898943Sluigi case TOK_RED: 216998943Sluigi case TOK_GRED: 217098943Sluigi NEED1("red/gred needs w_q/min_th/max_th/max_p\n"); 217198943Sluigi pipe.fs.flags_fs |= DN_IS_RED; 217298943Sluigi if (tok == TOK_GRED) 217398943Sluigi pipe.fs.flags_fs |= DN_IS_GENTLE_RED; 217498943Sluigi /* 217598943Sluigi * the format for parameters is w_q/min_th/max_th/max_p 217698943Sluigi */ 217798943Sluigi if ((end = strsep(&av[0], "/"))) { 217898943Sluigi double w_q = strtod(end, NULL); 217998943Sluigi if (w_q > 1 || w_q <= 0) 218098943Sluigi errx(EX_DATAERR, "0 < w_q <= 1"); 218198943Sluigi pipe.fs.w_q = (int) (w_q * (1 << SCALE_RED)); 218298943Sluigi } 218398943Sluigi if ((end = strsep(&av[0], "/"))) { 218498943Sluigi pipe.fs.min_th = strtoul(end, &end, 0); 218598943Sluigi if (*end == 'K' || *end == 'k') 218698943Sluigi pipe.fs.min_th *= 1024; 218798943Sluigi } 218898943Sluigi if ((end = strsep(&av[0], "/"))) { 218998943Sluigi pipe.fs.max_th = strtoul(end, &end, 0); 219098943Sluigi if (*end == 'K' || *end == 'k') 219198943Sluigi pipe.fs.max_th *= 1024; 219298943Sluigi } 219398943Sluigi if ((end = strsep(&av[0], "/"))) { 219498943Sluigi double max_p = strtod(end, NULL); 219598943Sluigi if (max_p > 1 || max_p <= 0) 219698943Sluigi errx(EX_DATAERR, "0 < max_p <= 1"); 219798943Sluigi pipe.fs.max_p = (int)(max_p * (1 << SCALE_RED)); 219898943Sluigi } 219998943Sluigi ac--; av++; 220098943Sluigi break; 220198943Sluigi 220298943Sluigi case TOK_DROPTAIL: 220398943Sluigi pipe.fs.flags_fs &= ~(DN_IS_RED|DN_IS_GENTLE_RED); 220498943Sluigi break; 2205106505Smaxim 220698943Sluigi case TOK_BW: 220798943Sluigi NEED1("bw needs bandwidth or interface\n"); 220898943Sluigi if (do_pipe != 1) 220998943Sluigi errx(EX_DATAERR, "bandwidth only valid for pipes"); 221098943Sluigi /* 221198943Sluigi * set clocking interface or bandwidth value 221298943Sluigi */ 221398943Sluigi if (av[0][0] >= 'a' && av[0][0] <= 'z') { 221498943Sluigi int l = sizeof(pipe.if_name)-1; 221598943Sluigi /* interface name */ 221698943Sluigi strncpy(pipe.if_name, av[0], l); 221798943Sluigi pipe.if_name[l] = '\0'; 221898943Sluigi pipe.bandwidth = 0; 221998943Sluigi } else { 222098943Sluigi pipe.if_name[0] = '\0'; 222198943Sluigi pipe.bandwidth = strtoul(av[0], &end, 0); 222298943Sluigi if (*end == 'K' || *end == 'k') { 222398943Sluigi end++; 222498943Sluigi pipe.bandwidth *= 1000; 222598943Sluigi } else if (*end == 'M') { 222698943Sluigi end++; 222798943Sluigi pipe.bandwidth *= 1000000; 222898943Sluigi } 222998943Sluigi if (*end == 'B' || !strncmp(end, "by", 2)) 223098943Sluigi pipe.bandwidth *= 8; 223198943Sluigi if (pipe.bandwidth < 0) 223298943Sluigi errx(EX_DATAERR, "bandwidth too large"); 223398943Sluigi } 223498943Sluigi ac--; av++; 223598943Sluigi break; 223698943Sluigi 223798943Sluigi case TOK_DELAY: 223898943Sluigi if (do_pipe != 1) 223998943Sluigi errx(EX_DATAERR, "delay only valid for pipes"); 224098943Sluigi NEED1("delay needs argument 0..10000ms\n"); 224198943Sluigi pipe.delay = strtoul(av[0], NULL, 0); 224298943Sluigi ac--; av++; 224398943Sluigi break; 224498943Sluigi 224598943Sluigi case TOK_WEIGHT: 224698943Sluigi if (do_pipe == 1) 224798943Sluigi errx(EX_DATAERR,"weight only valid for queues"); 224898943Sluigi NEED1("weight needs argument 0..100\n"); 224998943Sluigi pipe.fs.weight = strtoul(av[0], &end, 0); 225098943Sluigi ac--; av++; 225198943Sluigi break; 225298943Sluigi 225398943Sluigi case TOK_PIPE: 225498943Sluigi if (do_pipe == 1) 225598943Sluigi errx(EX_DATAERR,"pipe only valid for queues"); 225698943Sluigi NEED1("pipe needs pipe_number\n"); 225798943Sluigi pipe.fs.parent_nr = strtoul(av[0], &end, 0); 225898943Sluigi ac--; av++; 225998943Sluigi break; 226098943Sluigi 226198943Sluigi default: 226298943Sluigi errx(EX_DATAERR, "unrecognised option ``%s''", *av); 226398943Sluigi } 226498943Sluigi } 226598943Sluigi if (do_pipe == 1) { 226698943Sluigi if (pipe.pipe_nr == 0) 226798943Sluigi errx(EX_DATAERR, "pipe_nr must be > 0"); 226898943Sluigi if (pipe.delay > 10000) 226998943Sluigi errx(EX_DATAERR, "delay must be < 10000"); 227098943Sluigi } else { /* do_pipe == 2, queue */ 227198943Sluigi if (pipe.fs.parent_nr == 0) 227298943Sluigi errx(EX_DATAERR, "pipe must be > 0"); 227398943Sluigi if (pipe.fs.weight >100) 227498943Sluigi errx(EX_DATAERR, "weight must be <= 100"); 227598943Sluigi } 227698943Sluigi if (pipe.fs.flags_fs & DN_QSIZE_IS_BYTES) { 227798943Sluigi if (pipe.fs.qsize > 1024*1024) 227898943Sluigi errx(EX_DATAERR, "queue size must be < 1MB"); 227998943Sluigi } else { 228098943Sluigi if (pipe.fs.qsize > 100) 228198943Sluigi errx(EX_DATAERR, "2 <= queue size <= 100"); 228298943Sluigi } 228398943Sluigi if (pipe.fs.flags_fs & DN_IS_RED) { 228498943Sluigi size_t len; 228598943Sluigi int lookup_depth, avg_pkt_size; 228698943Sluigi double s, idle, weight, w_q; 228798943Sluigi struct clockinfo clock; 228898943Sluigi int t; 228998943Sluigi 229098943Sluigi if (pipe.fs.min_th >= pipe.fs.max_th) 229198943Sluigi errx(EX_DATAERR, "min_th %d must be < than max_th %d", 229298943Sluigi pipe.fs.min_th, pipe.fs.max_th); 229398943Sluigi if (pipe.fs.max_th == 0) 229498943Sluigi errx(EX_DATAERR, "max_th must be > 0"); 229598943Sluigi 229698943Sluigi len = sizeof(int); 229798943Sluigi if (sysctlbyname("net.inet.ip.dummynet.red_lookup_depth", 229898943Sluigi &lookup_depth, &len, NULL, 0) == -1) 229998943Sluigi 230098943Sluigi errx(1, "sysctlbyname(\"%s\")", 230198943Sluigi "net.inet.ip.dummynet.red_lookup_depth"); 230298943Sluigi if (lookup_depth == 0) 230398943Sluigi errx(EX_DATAERR, "net.inet.ip.dummynet.red_lookup_depth" 230498943Sluigi " must be greater than zero"); 230598943Sluigi 230698943Sluigi len = sizeof(int); 230798943Sluigi if (sysctlbyname("net.inet.ip.dummynet.red_avg_pkt_size", 230898943Sluigi &avg_pkt_size, &len, NULL, 0) == -1) 230998943Sluigi 231098943Sluigi errx(1, "sysctlbyname(\"%s\")", 231198943Sluigi "net.inet.ip.dummynet.red_avg_pkt_size"); 231298943Sluigi if (avg_pkt_size == 0) 231398943Sluigi errx(EX_DATAERR, 231498943Sluigi "net.inet.ip.dummynet.red_avg_pkt_size must" 231598943Sluigi " be greater than zero"); 231698943Sluigi 231798943Sluigi len = sizeof(struct clockinfo); 231898943Sluigi if (sysctlbyname("kern.clockrate", &clock, &len, NULL, 0) == -1) 231998943Sluigi errx(1, "sysctlbyname(\"%s\")", "kern.clockrate"); 232098943Sluigi 232198943Sluigi /* 232298943Sluigi * Ticks needed for sending a medium-sized packet. 232398943Sluigi * Unfortunately, when we are configuring a WF2Q+ queue, we 232498943Sluigi * do not have bandwidth information, because that is stored 232598943Sluigi * in the parent pipe, and also we have multiple queues 232698943Sluigi * competing for it. So we set s=0, which is not very 232798943Sluigi * correct. But on the other hand, why do we want RED with 232898943Sluigi * WF2Q+ ? 232998943Sluigi */ 233098943Sluigi if (pipe.bandwidth==0) /* this is a WF2Q+ queue */ 233198943Sluigi s = 0; 233298943Sluigi else 233398943Sluigi s = clock.hz * avg_pkt_size * 8 / pipe.bandwidth; 233498943Sluigi 233598943Sluigi /* 233698943Sluigi * max idle time (in ticks) before avg queue size becomes 0. 233798943Sluigi * NOTA: (3/w_q) is approx the value x so that 233898943Sluigi * (1-w_q)^x < 10^-3. 233998943Sluigi */ 234098943Sluigi w_q = ((double)pipe.fs.w_q) / (1 << SCALE_RED); 234198943Sluigi idle = s * 3. / w_q; 234298943Sluigi pipe.fs.lookup_step = (int)idle / lookup_depth; 234398943Sluigi if (!pipe.fs.lookup_step) 234498943Sluigi pipe.fs.lookup_step = 1; 234598943Sluigi weight = 1 - w_q; 234698943Sluigi for (t = pipe.fs.lookup_step; t > 0; --t) 234798943Sluigi weight *= weight; 234898943Sluigi pipe.fs.lookup_weight = (int)(weight * (1 << SCALE_RED)); 234998943Sluigi } 235098943Sluigi i = setsockopt(s, IPPROTO_IP, IP_DUMMYNET_CONFIGURE, &pipe, 235198943Sluigi sizeof pipe); 235298943Sluigi if (i) 235398943Sluigi err(1, "setsockopt(%s)", "IP_DUMMYNET_CONFIGURE"); 235498943Sluigi} 235598943Sluigi 235698943Sluigistatic void 235798943Sluigiget_mac_addr_mask(char *p, u_char *addr, u_char *mask) 235898943Sluigi{ 235998943Sluigi int i, l; 236098943Sluigi 236198943Sluigi for (i=0; i<6; i++) 236298943Sluigi addr[i] = mask[i] = 0; 236398943Sluigi if (!strcmp(p, "any")) 236498943Sluigi return; 236598943Sluigi 236698943Sluigi for (i=0; *p && i<6;i++, p++) { 236798943Sluigi addr[i] = strtol(p, &p, 16); 236898943Sluigi if (*p != ':') /* we start with the mask */ 236998943Sluigi break; 237098943Sluigi } 237198943Sluigi if (*p == '/') { /* mask len */ 237298943Sluigi l = strtol(p+1, &p, 0); 237398943Sluigi for (i=0; l>0; l -=8, i++) 237498943Sluigi mask[i] = (l >=8) ? 0xff : (~0) << (8-l); 237598943Sluigi } else if (*p == '&') { /* mask */ 237698943Sluigi for (i=0, p++; *p && i<6;i++, p++) { 237798943Sluigi mask[i] = strtol(p, &p, 16); 237898943Sluigi if (*p != ':') 237998943Sluigi break; 238098943Sluigi } 238198943Sluigi } else if (*p == '\0') { 238298943Sluigi for (i=0; i<6; i++) 238398943Sluigi mask[i] = 0xff; 238498943Sluigi } 238598943Sluigi for (i=0; i<6; i++) 238698943Sluigi addr[i] &= mask[i]; 238798943Sluigi} 238898943Sluigi 238998943Sluigi/* 239098943Sluigi * helper function, updates the pointer to cmd with the length 239198943Sluigi * of the current command, and also cleans up the first word of 239298943Sluigi * the new command in case it has been clobbered before. 239398943Sluigi */ 239498943Sluigistatic ipfw_insn * 239598943Sluiginext_cmd(ipfw_insn *cmd) 239698943Sluigi{ 239798943Sluigi cmd += F_LEN(cmd); 239898943Sluigi bzero(cmd, sizeof(*cmd)); 239998943Sluigi return cmd; 240098943Sluigi} 240198943Sluigi 240298943Sluigi/* 240398943Sluigi * A function to fill simple commands of size 1. 240498943Sluigi * Existing flags are preserved. 240598943Sluigi */ 240698943Sluigistatic void 240798943Sluigifill_cmd(ipfw_insn *cmd, enum ipfw_opcodes opcode, int flags, u_int16_t arg) 240898943Sluigi{ 240998943Sluigi cmd->opcode = opcode; 241098943Sluigi cmd->len = ((cmd->len | flags) & (F_NOT | F_OR)) | 1; 241198943Sluigi cmd->arg1 = arg; 241298943Sluigi} 241398943Sluigi 241498943Sluigi/* 241598943Sluigi * Fetch and add the MAC address and type, with masks. This generates one or 241698943Sluigi * two microinstructions, and returns the pointer to the last one. 241798943Sluigi */ 241898943Sluigistatic ipfw_insn * 241998943Sluigiadd_mac(ipfw_insn *cmd, int ac, char *av[]) 242098943Sluigi{ 2421102087Sluigi ipfw_insn_mac *mac; 242298943Sluigi 2423102087Sluigi if (ac < 2) 2424102098Sluigi errx(EX_DATAERR, "MAC dst src"); 242598943Sluigi 242698943Sluigi cmd->opcode = O_MACADDR2; 242798943Sluigi cmd->len = (cmd->len & (F_NOT | F_OR)) | F_INSN_SIZE(ipfw_insn_mac); 242898943Sluigi 242998943Sluigi mac = (ipfw_insn_mac *)cmd; 2430101978Sluigi get_mac_addr_mask(av[0], mac->addr, mac->mask); /* dst */ 243198943Sluigi get_mac_addr_mask(av[1], &(mac->addr[6]), &(mac->mask[6])); /* src */ 2432102087Sluigi return cmd; 2433102087Sluigi} 243498943Sluigi 2435102087Sluigistatic ipfw_insn * 2436102087Sluigiadd_mactype(ipfw_insn *cmd, int ac, char *av) 2437102087Sluigi{ 2438102087Sluigi if (ac < 1) 2439102087Sluigi errx(EX_DATAERR, "missing MAC type"); 2440102087Sluigi if (strcmp(av, "any") != 0) { /* we have a non-null type */ 2441102087Sluigi fill_newports((ipfw_insn_u16 *)cmd, av, IPPROTO_ETHERTYPE); 244298943Sluigi cmd->opcode = O_MAC_TYPE; 2443102087Sluigi return cmd; 2444102087Sluigi } else 2445102087Sluigi return NULL; 2446102087Sluigi} 244798943Sluigi 2448102087Sluigistatic ipfw_insn * 2449102087Sluigiadd_proto(ipfw_insn *cmd, char *av) 2450102087Sluigi{ 2451102087Sluigi struct protoent *pe; 2452102087Sluigi u_char proto = 0; 2453102087Sluigi 2454102087Sluigi if (!strncmp(av, "all", strlen(av))) 2455102087Sluigi ; /* same as "ip" */ 2456102087Sluigi else if ((proto = atoi(av)) > 0) 2457102087Sluigi ; /* all done! */ 2458102087Sluigi else if ((pe = getprotobyname(av)) != NULL) 2459102087Sluigi proto = pe->p_proto; 2460102087Sluigi else 2461102098Sluigi return NULL; 2462102087Sluigi if (proto != IPPROTO_IP) 2463102087Sluigi fill_cmd(cmd, O_PROTO, 0, proto); 246498943Sluigi return cmd; 246598943Sluigi} 246698943Sluigi 2467102087Sluigistatic ipfw_insn * 2468102087Sluigiadd_srcip(ipfw_insn *cmd, char *av) 2469102087Sluigi{ 2470102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2471102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2472102087Sluigi cmd->opcode = O_IP_SRC_SET; 2473102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2474102087Sluigi cmd->opcode = O_IP_SRC_ME; 2475102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2476102087Sluigi cmd->opcode = O_IP_SRC; 2477102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_ip)) /* addr/mask */ 2478102087Sluigi cmd->opcode = O_IP_SRC_MASK; 2479102087Sluigi return cmd; 2480102087Sluigi} 2481102087Sluigi 2482102087Sluigistatic ipfw_insn * 2483102087Sluigiadd_dstip(ipfw_insn *cmd, char *av) 2484102087Sluigi{ 2485102087Sluigi fill_ip((ipfw_insn_ip *)cmd, av); 2486102087Sluigi if (cmd->opcode == O_IP_DST_SET) /* set */ 2487102087Sluigi ; 2488102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn)) /* me */ 2489102087Sluigi cmd->opcode = O_IP_DST_ME; 2490102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_u32)) /* one IP */ 2491102087Sluigi cmd->opcode = O_IP_DST; 2492102087Sluigi else if (F_LEN(cmd) == F_INSN_SIZE(ipfw_insn_ip)) /* addr/mask */ 2493102087Sluigi cmd->opcode = O_IP_DST_MASK; 2494102087Sluigi return cmd; 2495102087Sluigi} 2496102087Sluigi 2497102087Sluigistatic ipfw_insn * 2498102087Sluigiadd_ports(ipfw_insn *cmd, char *av, u_char proto, int opcode) 2499102087Sluigi{ 2500102087Sluigi if (!strncmp(av, "any", strlen(av))) { 2501102087Sluigi return NULL; 2502102087Sluigi } else if (fill_newports((ipfw_insn_u16 *)cmd, av, proto)) { 2503102087Sluigi /* XXX todo: check that we have a protocol with ports */ 2504102087Sluigi cmd->opcode = opcode; 2505102087Sluigi return cmd; 2506102087Sluigi } 2507102087Sluigi return NULL; 2508102087Sluigi} 2509102087Sluigi 251098943Sluigi/* 251198943Sluigi * Parse arguments and assemble the microinstructions which make up a rule. 251298943Sluigi * Rules are added into the 'rulebuf' and then copied in the correct order 251398943Sluigi * into the actual rule. 251498943Sluigi * 251598943Sluigi * The syntax for a rule starts with the action, followed by an 251698943Sluigi * optional log action, and the various match patterns. 2517108533Sschweikh * In the assembled microcode, the first opcode must be an O_PROBE_STATE 251898943Sluigi * (generated if the rule includes a keep-state option), then the 251998943Sluigi * various match patterns, the "log" action, and the actual action. 2520106505Smaxim * 252198943Sluigi */ 252298943Sluigistatic void 252398943Sluigiadd(int ac, char *av[]) 252498943Sluigi{ 252598943Sluigi /* 252698943Sluigi * rules are added into the 'rulebuf' and then copied in 252798943Sluigi * the correct order into the actual rule. 252898943Sluigi * Some things that need to go out of order (prob, action etc.) 252998943Sluigi * go into actbuf[]. 253098943Sluigi */ 253198943Sluigi static u_int32_t rulebuf[255], actbuf[255], cmdbuf[255]; 253298943Sluigi 253398943Sluigi ipfw_insn *src, *dst, *cmd, *action, *prev; 2534102087Sluigi ipfw_insn *first_cmd; /* first match pattern */ 253598943Sluigi 253698943Sluigi struct ip_fw *rule; 253798943Sluigi 253898943Sluigi /* 253998943Sluigi * various flags used to record that we entered some fields. 254098943Sluigi */ 2541101116Sluigi ipfw_insn *have_state = NULL; /* check-state or keep-state */ 254298943Sluigi 254398943Sluigi int i; 254498943Sluigi 254598943Sluigi int open_par = 0; /* open parenthesis ( */ 254698943Sluigi 254798943Sluigi /* proto is here because it is used to fetch ports */ 254898943Sluigi u_char proto = IPPROTO_IP; /* default protocol */ 254998943Sluigi 2550107289Sluigi double match_prob = 1; /* match probability, default is always match */ 2551107289Sluigi 255298943Sluigi bzero(actbuf, sizeof(actbuf)); /* actions go here */ 255398943Sluigi bzero(cmdbuf, sizeof(cmdbuf)); 255498943Sluigi bzero(rulebuf, sizeof(rulebuf)); 255598943Sluigi 255698943Sluigi rule = (struct ip_fw *)rulebuf; 255798943Sluigi cmd = (ipfw_insn *)cmdbuf; 255898943Sluigi action = (ipfw_insn *)actbuf; 255998943Sluigi 256098943Sluigi av++; ac--; 256198943Sluigi 256298943Sluigi /* [rule N] -- Rule number optional */ 256398943Sluigi if (ac && isdigit(**av)) { 256498943Sluigi rule->rulenum = atoi(*av); 256598943Sluigi av++; 256698943Sluigi ac--; 256798943Sluigi } 256898943Sluigi 2569101628Sluigi /* [set N] -- set number (0..30), optional */ 2570101628Sluigi if (ac > 1 && !strncmp(*av, "set", strlen(*av))) { 2571101628Sluigi int set = strtoul(av[1], NULL, 10); 2572101628Sluigi if (set < 0 || set > 30) 2573101628Sluigi errx(EX_DATAERR, "illegal set %s", av[1]); 2574101628Sluigi rule->set = set; 2575101628Sluigi av += 2; ac -= 2; 2576101628Sluigi } 2577101628Sluigi 257898943Sluigi /* [prob D] -- match probability, optional */ 257998943Sluigi if (ac > 1 && !strncmp(*av, "prob", strlen(*av))) { 2580107289Sluigi match_prob = strtod(av[1], NULL); 258198943Sluigi 2582107289Sluigi if (match_prob <= 0 || match_prob > 1) 258398943Sluigi errx(EX_DATAERR, "illegal match prob. %s", av[1]); 258498943Sluigi av += 2; ac -= 2; 258598943Sluigi } 258698943Sluigi 258798943Sluigi /* action -- mandatory */ 258898943Sluigi NEED1("missing action"); 258998943Sluigi i = match_token(rule_actions, *av); 259098943Sluigi ac--; av++; 259198943Sluigi action->len = 1; /* default */ 259298943Sluigi switch(i) { 259398943Sluigi case TOK_CHECKSTATE: 2594101116Sluigi have_state = action; 259598943Sluigi action->opcode = O_CHECK_STATE; 259698943Sluigi break; 259798943Sluigi 259898943Sluigi case TOK_ACCEPT: 259998943Sluigi action->opcode = O_ACCEPT; 260098943Sluigi break; 260198943Sluigi 260298943Sluigi case TOK_DENY: 260398943Sluigi action->opcode = O_DENY; 260499475Sluigi action->arg1 = 0; 260598943Sluigi break; 260698943Sluigi 260799475Sluigi case TOK_REJECT: 260899475Sluigi action->opcode = O_REJECT; 260999475Sluigi action->arg1 = ICMP_UNREACH_HOST; 261099475Sluigi break; 261199475Sluigi 261299475Sluigi case TOK_RESET: 261399475Sluigi action->opcode = O_REJECT; 261499475Sluigi action->arg1 = ICMP_REJECT_RST; 261599475Sluigi break; 261699475Sluigi 261799475Sluigi case TOK_UNREACH: 261899475Sluigi action->opcode = O_REJECT; 261999475Sluigi NEED1("missing reject code"); 262099475Sluigi fill_reject_code(&action->arg1, *av); 262199475Sluigi ac--; av++; 262299475Sluigi break; 262399475Sluigi 262498943Sluigi case TOK_COUNT: 262598943Sluigi action->opcode = O_COUNT; 262698943Sluigi break; 262798943Sluigi 262898943Sluigi case TOK_QUEUE: 262998943Sluigi case TOK_PIPE: 263098943Sluigi action->len = F_INSN_SIZE(ipfw_insn_pipe); 263198943Sluigi case TOK_SKIPTO: 263298943Sluigi if (i == TOK_QUEUE) 263398943Sluigi action->opcode = O_QUEUE; 263498943Sluigi else if (i == TOK_PIPE) 263598943Sluigi action->opcode = O_PIPE; 263698943Sluigi else if (i == TOK_SKIPTO) 263798943Sluigi action->opcode = O_SKIPTO; 263898943Sluigi NEED1("missing skipto/pipe/queue number"); 263998943Sluigi action->arg1 = strtoul(*av, NULL, 10); 264098943Sluigi av++; ac--; 264198943Sluigi break; 264298943Sluigi 264398943Sluigi case TOK_DIVERT: 264498943Sluigi case TOK_TEE: 264598943Sluigi action->opcode = (i == TOK_DIVERT) ? O_DIVERT : O_TEE; 264698943Sluigi NEED1("missing divert/tee port"); 264798943Sluigi action->arg1 = strtoul(*av, NULL, 0); 264898943Sluigi if (action->arg1 == 0) { 264998943Sluigi struct servent *s; 265098943Sluigi setservent(1); 265198943Sluigi s = getservbyname(av[0], "divert"); 265298943Sluigi if (s != NULL) 265398943Sluigi action->arg1 = ntohs(s->s_port); 265498943Sluigi else 265598943Sluigi errx(EX_DATAERR, "illegal divert/tee port"); 265698943Sluigi } 265798943Sluigi ac--; av++; 265898943Sluigi break; 265998943Sluigi 266098943Sluigi case TOK_FORWARD: { 266198943Sluigi ipfw_insn_sa *p = (ipfw_insn_sa *)action; 266298943Sluigi char *s, *end; 266398943Sluigi 266498943Sluigi NEED1("missing forward address[:port]"); 266598943Sluigi 266698943Sluigi action->opcode = O_FORWARD_IP; 266798943Sluigi action->len = F_INSN_SIZE(ipfw_insn_sa); 266898943Sluigi 266998943Sluigi p->sa.sin_len = sizeof(struct sockaddr_in); 267098943Sluigi p->sa.sin_family = AF_INET; 267198943Sluigi p->sa.sin_port = 0; 267298943Sluigi /* 267398943Sluigi * locate the address-port separator (':' or ',') 267498943Sluigi */ 267598943Sluigi s = strchr(*av, ':'); 267698943Sluigi if (s == NULL) 267798943Sluigi s = strchr(*av, ','); 267898943Sluigi if (s != NULL) { 267998943Sluigi *(s++) = '\0'; 268098943Sluigi i = strtoport(s, &end, 0 /* base */, 0 /* proto */); 268198943Sluigi if (s == end) 268298943Sluigi errx(EX_DATAERR, 268398943Sluigi "illegal forwarding port ``%s''", s); 2684103241Sluigi p->sa.sin_port = (u_short)i; 268598943Sluigi } 268698943Sluigi lookup_host(*av, &(p->sa.sin_addr)); 268798943Sluigi } 268898943Sluigi ac--; av++; 268998943Sluigi break; 269098943Sluigi 269198943Sluigi default: 2692102087Sluigi errx(EX_DATAERR, "invalid action %s\n", av[-1]); 269398943Sluigi } 269498943Sluigi action = next_cmd(action); 269598943Sluigi 269698943Sluigi /* 269798943Sluigi * [log [logamount N]] -- log, optional 269898943Sluigi * 269998943Sluigi * If exists, it goes first in the cmdbuf, but then it is 270098943Sluigi * skipped in the copy section to the end of the buffer. 270198943Sluigi */ 270298943Sluigi if (ac && !strncmp(*av, "log", strlen(*av))) { 270398943Sluigi ipfw_insn_log *c = (ipfw_insn_log *)cmd; 270498943Sluigi 270598943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_log); 270698943Sluigi cmd->opcode = O_LOG; 270798943Sluigi av++; ac--; 270898943Sluigi if (ac && !strncmp(*av, "logamount", strlen(*av))) { 270998943Sluigi ac--; av++; 271098943Sluigi NEED1("logamount requires argument"); 271198943Sluigi c->max_log = atoi(*av); 271298943Sluigi if (c->max_log < 0) 271398943Sluigi errx(EX_DATAERR, "logamount must be positive"); 271498943Sluigi ac--; av++; 271598943Sluigi } 271698943Sluigi cmd = next_cmd(cmd); 271798943Sluigi } 271898943Sluigi 2719101116Sluigi if (have_state) /* must be a check-state, we are done */ 272098943Sluigi goto done; 272198943Sluigi 272298943Sluigi#define OR_START(target) \ 272398943Sluigi if (ac && (*av[0] == '(' || *av[0] == '{')) { \ 272498943Sluigi if (open_par) \ 272598943Sluigi errx(EX_USAGE, "nested \"(\" not allowed\n"); \ 2726101641Sluigi prev = NULL; \ 272798943Sluigi open_par = 1; \ 272898943Sluigi if ( (av[0])[1] == '\0') { \ 272998943Sluigi ac--; av++; \ 273098943Sluigi } else \ 273198943Sluigi (*av)++; \ 273298943Sluigi } \ 273398943Sluigi target: \ 273498943Sluigi 273598943Sluigi 273698943Sluigi#define CLOSE_PAR \ 273798943Sluigi if (open_par) { \ 273898943Sluigi if (ac && ( \ 273998943Sluigi !strncmp(*av, ")", strlen(*av)) || \ 274098943Sluigi !strncmp(*av, "}", strlen(*av)) )) { \ 2741101641Sluigi prev = NULL; \ 274298943Sluigi open_par = 0; \ 274398943Sluigi ac--; av++; \ 274498943Sluigi } else \ 274598943Sluigi errx(EX_USAGE, "missing \")\"\n"); \ 274698943Sluigi } 2747106505Smaxim 274898943Sluigi#define NOT_BLOCK \ 274998943Sluigi if (ac && !strncmp(*av, "not", strlen(*av))) { \ 275098943Sluigi if (cmd->len & F_NOT) \ 275198943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); \ 275298943Sluigi cmd->len |= F_NOT; \ 275398943Sluigi ac--; av++; \ 275498943Sluigi } 275598943Sluigi 275698943Sluigi#define OR_BLOCK(target) \ 275798943Sluigi if (ac && !strncmp(*av, "or", strlen(*av))) { \ 275898943Sluigi if (prev == NULL || open_par == 0) \ 275998943Sluigi errx(EX_DATAERR, "invalid OR block"); \ 276098943Sluigi prev->len |= F_OR; \ 276198943Sluigi ac--; av++; \ 276298943Sluigi goto target; \ 276398943Sluigi } \ 276498943Sluigi CLOSE_PAR; 276598943Sluigi 2766102087Sluigi first_cmd = cmd; 2767102098Sluigi 2768102098Sluigi#if 0 276998943Sluigi /* 2770102087Sluigi * MAC addresses, optional. 2771102087Sluigi * If we have this, we skip the part "proto from src to dst" 2772102087Sluigi * and jump straight to the option parsing. 2773102087Sluigi */ 2774102087Sluigi NOT_BLOCK; 2775102087Sluigi NEED1("missing protocol"); 2776102087Sluigi if (!strncmp(*av, "MAC", strlen(*av)) || 2777102087Sluigi !strncmp(*av, "mac", strlen(*av))) { 2778102087Sluigi ac--; av++; /* the "MAC" keyword */ 2779102087Sluigi add_mac(cmd, ac, av); /* exits in case of errors */ 2780102087Sluigi cmd = next_cmd(cmd); 2781102087Sluigi ac -= 2; av += 2; /* dst-mac and src-mac */ 2782102087Sluigi NOT_BLOCK; 2783102087Sluigi NEED1("missing mac type"); 2784102087Sluigi if (add_mactype(cmd, ac, av[0])) 2785102087Sluigi cmd = next_cmd(cmd); 2786102087Sluigi ac--; av++; /* any or mac-type */ 2787102087Sluigi goto read_options; 2788102087Sluigi } 2789102098Sluigi#endif 2790102087Sluigi 2791102087Sluigi /* 279298943Sluigi * protocol, mandatory 279398943Sluigi */ 279498943Sluigi OR_START(get_proto); 279598943Sluigi NOT_BLOCK; 279698943Sluigi NEED1("missing protocol"); 2797102087Sluigi if (add_proto(cmd, *av)) { 2798102087Sluigi av++; ac--; 2799102087Sluigi if (F_LEN(cmd) == 0) /* plain IP */ 2800102087Sluigi proto = 0; 2801102087Sluigi else { 2802102087Sluigi proto = cmd->arg1; 2803102087Sluigi prev = cmd; 2804102087Sluigi cmd = next_cmd(cmd); 2805102087Sluigi } 2806102098Sluigi } else if (first_cmd != cmd) { 2807102098Sluigi errx(EX_DATAERR, "invalid protocol ``%s''", av); 2808102098Sluigi } else 2809102098Sluigi goto read_options; 281098943Sluigi OR_BLOCK(get_proto); 281198943Sluigi 281298943Sluigi /* 2813102087Sluigi * "from", mandatory 281498943Sluigi */ 2815102087Sluigi if (!ac || strncmp(*av, "from", strlen(*av))) 281698943Sluigi errx(EX_USAGE, "missing ``from''"); 281798943Sluigi ac--; av++; 281898943Sluigi 281998943Sluigi /* 282098943Sluigi * source IP, mandatory 282198943Sluigi */ 282298943Sluigi OR_START(source_ip); 282398943Sluigi NOT_BLOCK; /* optional "not" */ 282498943Sluigi NEED1("missing source address"); 2825102087Sluigi if (add_srcip(cmd, *av)) { 2826102087Sluigi ac--; av++; 2827102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 2828102087Sluigi prev = cmd; 2829102087Sluigi cmd = next_cmd(cmd); 2830102087Sluigi } 2831102087Sluigi } 283298943Sluigi OR_BLOCK(source_ip); 283398943Sluigi 283498943Sluigi /* 283598943Sluigi * source ports, optional 283698943Sluigi */ 283798943Sluigi NOT_BLOCK; /* optional "not" */ 2838101641Sluigi if (ac) { 2839102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 2840102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 2841102087Sluigi ac--; av++; 2842102087Sluigi if (F_LEN(cmd) != 0) 2843102087Sluigi cmd = next_cmd(cmd); 2844101641Sluigi } 284598943Sluigi } 284698943Sluigi 284798943Sluigi /* 2848102087Sluigi * "to", mandatory 284998943Sluigi */ 2850102087Sluigi if (!ac || strncmp(*av, "to", strlen(*av))) 285198943Sluigi errx(EX_USAGE, "missing ``to''"); 285298943Sluigi av++; ac--; 285398943Sluigi 285498943Sluigi /* 285598943Sluigi * destination, mandatory 285698943Sluigi */ 285798943Sluigi OR_START(dest_ip); 285898943Sluigi NOT_BLOCK; /* optional "not" */ 285998943Sluigi NEED1("missing dst address"); 2860102087Sluigi if (add_dstip(cmd, *av)) { 2861102087Sluigi ac--; av++; 2862102087Sluigi if (F_LEN(cmd) != 0) { /* ! any */ 2863102087Sluigi prev = cmd; 2864102087Sluigi cmd = next_cmd(cmd); 2865102087Sluigi } 2866102087Sluigi } 286798943Sluigi OR_BLOCK(dest_ip); 286898943Sluigi 286998943Sluigi /* 287098943Sluigi * dest. ports, optional 287198943Sluigi */ 287298943Sluigi NOT_BLOCK; /* optional "not" */ 2873101641Sluigi if (ac) { 2874102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 2875102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 2876102087Sluigi ac--; av++; 2877102087Sluigi if (F_LEN(cmd) != 0) 2878102087Sluigi cmd = next_cmd(cmd); 2879101641Sluigi } 288098943Sluigi } 288198943Sluigi 288298943Sluigiread_options: 2883102087Sluigi if (ac && first_cmd == cmd) { 2884102087Sluigi /* 2885102087Sluigi * nothing specified so far, store in the rule to ease 2886102087Sluigi * printout later. 2887102087Sluigi */ 2888102087Sluigi rule->_pad = 1; 2889102087Sluigi } 289098943Sluigi prev = NULL; 289198943Sluigi while (ac) { 2892101641Sluigi char *s; 2893101641Sluigi ipfw_insn_u32 *cmd32; /* alias for cmd */ 289498943Sluigi 2895101641Sluigi s = *av; 2896101641Sluigi cmd32 = (ipfw_insn_u32 *)cmd; 2897101641Sluigi 289898943Sluigi if (*s == '!') { /* alternate syntax for NOT */ 289998943Sluigi if (cmd->len & F_NOT) 290098943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 290198943Sluigi cmd->len = F_NOT; 290298943Sluigi s++; 290398943Sluigi } 290498943Sluigi i = match_token(rule_options, s); 290598943Sluigi ac--; av++; 290698943Sluigi switch(i) { 290798943Sluigi case TOK_NOT: 290898943Sluigi if (cmd->len & F_NOT) 290998943Sluigi errx(EX_USAGE, "double \"not\" not allowed\n"); 291098943Sluigi cmd->len = F_NOT; 291198943Sluigi break; 291298943Sluigi 291398943Sluigi case TOK_OR: 2914101641Sluigi if (open_par == 0 || prev == NULL) 291598943Sluigi errx(EX_USAGE, "invalid \"or\" block\n"); 291698943Sluigi prev->len |= F_OR; 291798943Sluigi break; 2918101641Sluigi 2919101641Sluigi case TOK_STARTBRACE: 2920101641Sluigi if (open_par) 2921101641Sluigi errx(EX_USAGE, "+nested \"(\" not allowed\n"); 2922101641Sluigi open_par = 1; 2923101641Sluigi break; 2924101641Sluigi 2925101641Sluigi case TOK_ENDBRACE: 2926101641Sluigi if (!open_par) 2927101641Sluigi errx(EX_USAGE, "+missing \")\"\n"); 2928101641Sluigi open_par = 0; 2929102087Sluigi prev = NULL; 2930101641Sluigi break; 2931101641Sluigi 293298943Sluigi case TOK_IN: 293398943Sluigi fill_cmd(cmd, O_IN, 0, 0); 293498943Sluigi break; 293598943Sluigi 293698943Sluigi case TOK_OUT: 293798943Sluigi cmd->len ^= F_NOT; /* toggle F_NOT */ 293898943Sluigi fill_cmd(cmd, O_IN, 0, 0); 293998943Sluigi break; 294098943Sluigi 294198943Sluigi case TOK_FRAG: 294298943Sluigi fill_cmd(cmd, O_FRAG, 0, 0); 294398943Sluigi break; 294498943Sluigi 294598943Sluigi case TOK_LAYER2: 294698943Sluigi fill_cmd(cmd, O_LAYER2, 0, 0); 294798943Sluigi break; 294898943Sluigi 294998943Sluigi case TOK_XMIT: 295098943Sluigi case TOK_RECV: 295198943Sluigi case TOK_VIA: 295298943Sluigi NEED1("recv, xmit, via require interface name" 295398943Sluigi " or address"); 295498943Sluigi fill_iface((ipfw_insn_if *)cmd, av[0]); 295598943Sluigi ac--; av++; 295698943Sluigi if (F_LEN(cmd) == 0) /* not a valid address */ 295798943Sluigi break; 295898943Sluigi if (i == TOK_XMIT) 295998943Sluigi cmd->opcode = O_XMIT; 296098943Sluigi else if (i == TOK_RECV) 296198943Sluigi cmd->opcode = O_RECV; 296298943Sluigi else if (i == TOK_VIA) 296398943Sluigi cmd->opcode = O_VIA; 296498943Sluigi break; 296598943Sluigi 296699475Sluigi case TOK_ICMPTYPES: 296799475Sluigi NEED1("icmptypes requires list of types"); 296899475Sluigi fill_icmptypes((ipfw_insn_u32 *)cmd, *av); 296999475Sluigi av++; ac--; 297099475Sluigi break; 297199475Sluigi 297298943Sluigi case TOK_IPTTL: 297398943Sluigi NEED1("ipttl requires TTL"); 297498943Sluigi fill_cmd(cmd, O_IPTTL, 0, strtoul(*av, NULL, 0)); 297598943Sluigi ac--; av++; 297698943Sluigi break; 297798943Sluigi 297898943Sluigi case TOK_IPID: 297998943Sluigi NEED1("ipid requires length"); 298098943Sluigi fill_cmd(cmd, O_IPID, 0, strtoul(*av, NULL, 0)); 298198943Sluigi ac--; av++; 298298943Sluigi break; 298398943Sluigi 298498943Sluigi case TOK_IPLEN: 298598943Sluigi NEED1("iplen requires length"); 298698943Sluigi fill_cmd(cmd, O_IPLEN, 0, strtoul(*av, NULL, 0)); 298798943Sluigi ac--; av++; 298898943Sluigi break; 298998943Sluigi 299098943Sluigi case TOK_IPVER: 299198943Sluigi NEED1("ipver requires version"); 299298943Sluigi fill_cmd(cmd, O_IPVER, 0, strtoul(*av, NULL, 0)); 299398943Sluigi ac--; av++; 299498943Sluigi break; 299598943Sluigi 299699475Sluigi case TOK_IPPRECEDENCE: 299799475Sluigi NEED1("ipprecedence requires value"); 299899475Sluigi fill_cmd(cmd, O_IPPRECEDENCE, 0, 299999475Sluigi (strtoul(*av, NULL, 0) & 7) << 5); 300099475Sluigi ac--; av++; 300199475Sluigi break; 300299475Sluigi 300398943Sluigi case TOK_IPOPTS: 300498943Sluigi NEED1("missing argument for ipoptions"); 3005101116Sluigi fill_flags(cmd, O_IPOPT, f_ipopts, *av); 300698943Sluigi ac--; av++; 300798943Sluigi break; 300898943Sluigi 300999475Sluigi case TOK_IPTOS: 301099475Sluigi NEED1("missing argument for iptos"); 3011101116Sluigi fill_flags(cmd, O_IPTOS, f_iptos, *av); 301299475Sluigi ac--; av++; 301399475Sluigi break; 301499475Sluigi 301598943Sluigi case TOK_UID: 301698943Sluigi NEED1("uid requires argument"); 301798943Sluigi { 301898943Sluigi char *end; 301998943Sluigi uid_t uid; 302098943Sluigi struct passwd *pwd; 302198943Sluigi 302298943Sluigi cmd->opcode = O_UID; 302398943Sluigi uid = strtoul(*av, &end, 0); 302498943Sluigi pwd = (*end == '\0') ? getpwuid(uid) : getpwnam(*av); 302598943Sluigi if (pwd == NULL) 302698943Sluigi errx(EX_DATAERR, "uid \"%s\" nonexistent", *av); 3027106504Smaxim cmd32->d[0] = pwd->pw_uid; 302898943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 302998943Sluigi ac--; av++; 303098943Sluigi } 303198943Sluigi break; 303298943Sluigi 303398943Sluigi case TOK_GID: 303498943Sluigi NEED1("gid requires argument"); 303598943Sluigi { 303698943Sluigi char *end; 303798943Sluigi gid_t gid; 303898943Sluigi struct group *grp; 303998943Sluigi 304098943Sluigi cmd->opcode = O_GID; 304198943Sluigi gid = strtoul(*av, &end, 0); 304298943Sluigi grp = (*end == '\0') ? getgrgid(gid) : getgrnam(*av); 304398943Sluigi if (grp == NULL) 304498943Sluigi errx(EX_DATAERR, "gid \"%s\" nonexistent", *av); 3045106504Smaxim cmd32->d[0] = grp->gr_gid; 304698943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 304798943Sluigi ac--; av++; 304898943Sluigi } 304998943Sluigi break; 305098943Sluigi 305198943Sluigi case TOK_ESTAB: 305298943Sluigi fill_cmd(cmd, O_ESTAB, 0, 0); 305398943Sluigi break; 305498943Sluigi 305598943Sluigi case TOK_SETUP: 305698943Sluigi fill_cmd(cmd, O_TCPFLAGS, 0, 305798943Sluigi (TH_SYN) | ( (TH_ACK) & 0xff) <<8 ); 305898943Sluigi break; 305998943Sluigi 306098943Sluigi case TOK_TCPOPTS: 306198943Sluigi NEED1("missing argument for tcpoptions"); 306298943Sluigi fill_flags(cmd, O_TCPOPTS, f_tcpopts, *av); 306398943Sluigi ac--; av++; 306498943Sluigi break; 306598943Sluigi 306698943Sluigi case TOK_TCPSEQ: 306798943Sluigi case TOK_TCPACK: 306898943Sluigi NEED1("tcpseq/tcpack requires argument"); 306998943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_u32); 307098943Sluigi cmd->opcode = (i == TOK_TCPSEQ) ? O_TCPSEQ : O_TCPACK; 307198943Sluigi cmd32->d[0] = htonl(strtoul(*av, NULL, 0)); 307298943Sluigi ac--; av++; 307398943Sluigi break; 307498943Sluigi 307598943Sluigi case TOK_TCPWIN: 307698943Sluigi NEED1("tcpwin requires length"); 307798943Sluigi fill_cmd(cmd, O_TCPWIN, 0, 307898943Sluigi htons(strtoul(*av, NULL, 0))); 307998943Sluigi ac--; av++; 308098943Sluigi break; 308198943Sluigi 308298943Sluigi case TOK_TCPFLAGS: 308398943Sluigi NEED1("missing argument for tcpflags"); 308498943Sluigi cmd->opcode = O_TCPFLAGS; 308598943Sluigi fill_flags(cmd, O_TCPFLAGS, f_tcpflags, *av); 308698943Sluigi ac--; av++; 308798943Sluigi break; 308898943Sluigi 308998943Sluigi case TOK_KEEPSTATE: 3090101641Sluigi if (open_par) 3091101641Sluigi errx(EX_USAGE, "keep-state cannot be part " 3092101641Sluigi "of an or block"); 309399909Sluigi if (have_state) 3094101116Sluigi errx(EX_USAGE, "only one of keep-state " 309599909Sluigi "and limit is allowed"); 3096101116Sluigi have_state = cmd; 309798943Sluigi fill_cmd(cmd, O_KEEP_STATE, 0, 0); 309898943Sluigi break; 309998943Sluigi 310098943Sluigi case TOK_LIMIT: 3101101641Sluigi if (open_par) 3102101641Sluigi errx(EX_USAGE, "limit cannot be part " 3103101641Sluigi "of an or block"); 310499909Sluigi if (have_state) 3105101116Sluigi errx(EX_USAGE, "only one of keep-state " 310699909Sluigi "and limit is allowed"); 3107101641Sluigi NEED1("limit needs mask and # of connections"); 3108101116Sluigi have_state = cmd; 310998943Sluigi { 311098943Sluigi ipfw_insn_limit *c = (ipfw_insn_limit *)cmd; 311198943Sluigi 311298943Sluigi cmd->len = F_INSN_SIZE(ipfw_insn_limit); 311398943Sluigi cmd->opcode = O_LIMIT; 311498943Sluigi c->limit_mask = 0; 311598943Sluigi c->conn_limit = 0; 311698943Sluigi for (; ac >1 ;) { 311798943Sluigi int val; 311898943Sluigi 311998943Sluigi val = match_token(limit_masks, *av); 312098943Sluigi if (val <= 0) 312198943Sluigi break; 312298943Sluigi c->limit_mask |= val; 312398943Sluigi ac--; av++; 312498943Sluigi } 312598943Sluigi c->conn_limit = atoi(*av); 312698943Sluigi if (c->conn_limit == 0) 312798943Sluigi errx(EX_USAGE, "limit: limit must be >0"); 312898943Sluigi if (c->limit_mask == 0) 312998943Sluigi errx(EX_USAGE, "missing limit mask"); 313098943Sluigi ac--; av++; 313198943Sluigi } 313298943Sluigi break; 313398943Sluigi 3134102087Sluigi case TOK_PROTO: 3135102087Sluigi NEED1("missing protocol"); 3136102087Sluigi if (add_proto(cmd, *av)) { 3137102087Sluigi proto = cmd->arg1; 3138102087Sluigi ac--; av++; 3139102098Sluigi } else 3140102098Sluigi errx(EX_DATAERR, "invalid protocol ``%s''", av); 3141102087Sluigi break; 3142106505Smaxim 3143102087Sluigi case TOK_SRCIP: 3144102087Sluigi NEED1("missing source IP"); 3145102087Sluigi if (add_srcip(cmd, *av)) { 3146102087Sluigi ac--; av++; 3147102087Sluigi } 3148102087Sluigi break; 3149102087Sluigi 3150102087Sluigi case TOK_DSTIP: 3151102087Sluigi NEED1("missing destination IP"); 3152102087Sluigi if (add_dstip(cmd, *av)) { 3153102087Sluigi ac--; av++; 3154102087Sluigi } 3155102087Sluigi break; 3156102087Sluigi 3157102087Sluigi case TOK_SRCPORT: 3158102087Sluigi NEED1("missing source port"); 3159102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 3160102087Sluigi add_ports(cmd, *av, proto, O_IP_SRCPORT)) { 3161102087Sluigi ac--; av++; 3162102087Sluigi } else 3163102087Sluigi errx(EX_DATAERR, "invalid source port %s", *av); 3164102087Sluigi break; 3165102087Sluigi 3166102087Sluigi case TOK_DSTPORT: 3167102087Sluigi NEED1("missing destination port"); 3168102087Sluigi if (!strncmp(*av, "any", strlen(*av)) || 3169102087Sluigi add_ports(cmd, *av, proto, O_IP_DSTPORT)) { 3170102087Sluigi ac--; av++; 3171102087Sluigi } else 3172102087Sluigi errx(EX_DATAERR, "invalid destination port %s", 3173102087Sluigi *av); 3174102087Sluigi break; 3175102087Sluigi 3176102087Sluigi case TOK_MAC: 3177102087Sluigi if (ac < 2) 3178102087Sluigi errx(EX_USAGE, "MAC dst-mac src-mac"); 3179102087Sluigi if (add_mac(cmd, ac, av)) { 3180102087Sluigi ac -= 2; av += 2; 3181102087Sluigi } 3182102087Sluigi break; 3183102087Sluigi 3184102087Sluigi case TOK_MACTYPE: 3185102087Sluigi NEED1("missing mac type"); 3186102087Sluigi if (!add_mactype(cmd, ac, *av)) 3187102087Sluigi errx(EX_DATAERR, "invalid mac type %s", av); 3188102087Sluigi ac--; av++; 3189102087Sluigi break; 3190102087Sluigi 3191112250Scjc case TOK_VERREVPATH: 3192112250Scjc fill_cmd(cmd, O_VERREVPATH, 0, 0); 3193112250Scjc break; 3194112250Scjc 319598943Sluigi default: 319698943Sluigi errx(EX_USAGE, "unrecognised option [%d] %s\n", i, s); 319798943Sluigi } 319898943Sluigi if (F_LEN(cmd) > 0) { /* prepare to advance */ 319998943Sluigi prev = cmd; 320098943Sluigi cmd = next_cmd(cmd); 320198943Sluigi } 320298943Sluigi } 320398943Sluigi 320498943Sluigidone: 320598943Sluigi /* 320698943Sluigi * Now copy stuff into the rule. 320798943Sluigi * If we have a keep-state option, the first instruction 320898943Sluigi * must be a PROBE_STATE (which is generated here). 320998943Sluigi * If we have a LOG option, it was stored as the first command, 321098943Sluigi * and now must be moved to the top of the action part. 321198943Sluigi */ 321298943Sluigi dst = (ipfw_insn *)rule->cmd; 321398943Sluigi 321498943Sluigi /* 3215107289Sluigi * First thing to write into the command stream is the match probability. 3216107289Sluigi */ 3217107289Sluigi if (match_prob != 1) { /* 1 means always match */ 3218107289Sluigi dst->opcode = O_PROB; 3219107289Sluigi dst->len = 2; 3220107289Sluigi *((int32_t *)(dst+1)) = (int32_t)(match_prob * 0x7fffffff); 3221107289Sluigi dst += dst->len; 3222107289Sluigi } 3223107289Sluigi 3224107289Sluigi /* 322598943Sluigi * generate O_PROBE_STATE if necessary 322698943Sluigi */ 3227101116Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 322898943Sluigi fill_cmd(dst, O_PROBE_STATE, 0, 0); 322998943Sluigi dst = next_cmd(dst); 323098943Sluigi } 323198943Sluigi /* 3232101116Sluigi * copy all commands but O_LOG, O_KEEP_STATE, O_LIMIT 323398943Sluigi */ 323498943Sluigi for (src = (ipfw_insn *)cmdbuf; src != cmd; src += i) { 323598943Sluigi i = F_LEN(src); 323698943Sluigi 3237101116Sluigi switch (src->opcode) { 3238101116Sluigi case O_LOG: 3239101116Sluigi case O_KEEP_STATE: 3240101116Sluigi case O_LIMIT: 3241101116Sluigi break; 3242101116Sluigi default: 324398943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 324498943Sluigi dst += i; 324598943Sluigi } 324698943Sluigi } 324798943Sluigi 324898943Sluigi /* 3249101116Sluigi * put back the have_state command as last opcode 3250101116Sluigi */ 3251101295Sluigi if (have_state && have_state->opcode != O_CHECK_STATE) { 3252101116Sluigi i = F_LEN(have_state); 3253101116Sluigi bcopy(have_state, dst, i * sizeof(u_int32_t)); 3254101116Sluigi dst += i; 3255101116Sluigi } 3256101116Sluigi /* 325798943Sluigi * start action section 325898943Sluigi */ 325998943Sluigi rule->act_ofs = dst - rule->cmd; 326098943Sluigi 326198943Sluigi /* 326298943Sluigi * put back O_LOG if necessary 326398943Sluigi */ 326498943Sluigi src = (ipfw_insn *)cmdbuf; 326598943Sluigi if ( src->opcode == O_LOG ) { 326698943Sluigi i = F_LEN(src); 326798943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 326898943Sluigi dst += i; 326998943Sluigi } 327098943Sluigi /* 327198943Sluigi * copy all other actions 327298943Sluigi */ 327398943Sluigi for (src = (ipfw_insn *)actbuf; src != action; src += i) { 327498943Sluigi i = F_LEN(src); 327598943Sluigi bcopy(src, dst, i * sizeof(u_int32_t)); 327698943Sluigi dst += i; 327798943Sluigi } 327898943Sluigi 327998943Sluigi rule->cmd_len = (u_int32_t *)dst - (u_int32_t *)(rule->cmd); 328098943Sluigi i = (void *)dst - (void *)rule; 328198943Sluigi if (getsockopt(s, IPPROTO_IP, IP_FW_ADD, rule, &i) == -1) 328298943Sluigi err(EX_UNAVAILABLE, "getsockopt(%s)", "IP_FW_ADD"); 328398943Sluigi if (!do_quiet) 3284112189Smaxim show_ipfw(rule, 10, 10); 328598943Sluigi} 328698943Sluigi 328798943Sluigistatic void 3288101978Sluigizero(int ac, char *av[]) 328998943Sluigi{ 329098943Sluigi int rulenum; 329198943Sluigi int failed = EX_OK; 329298943Sluigi 329398943Sluigi av++; ac--; 329498943Sluigi 329598943Sluigi if (!ac) { 329698943Sluigi /* clear all entries */ 329798943Sluigi if (setsockopt(s, IPPROTO_IP, IP_FW_ZERO, NULL, 0) < 0) 329898943Sluigi err(EX_UNAVAILABLE, "setsockopt(%s)", "IP_FW_ZERO"); 329998943Sluigi if (!do_quiet) 330098943Sluigi printf("Accounting cleared.\n"); 330198943Sluigi 330298943Sluigi return; 330398943Sluigi } 330498943Sluigi 330598943Sluigi while (ac) { 330698943Sluigi /* Rule number */ 330798943Sluigi if (isdigit(**av)) { 330898943Sluigi rulenum = atoi(*av); 330998943Sluigi av++; 331098943Sluigi ac--; 331198943Sluigi if (setsockopt(s, IPPROTO_IP, 331298943Sluigi IP_FW_ZERO, &rulenum, sizeof rulenum)) { 331398943Sluigi warn("rule %u: setsockopt(IP_FW_ZERO)", 331498943Sluigi rulenum); 331598943Sluigi failed = EX_UNAVAILABLE; 331698943Sluigi } else if (!do_quiet) 331798943Sluigi printf("Entry %d cleared\n", rulenum); 331898943Sluigi } else { 331998943Sluigi errx(EX_USAGE, "invalid rule number ``%s''", *av); 332098943Sluigi } 332198943Sluigi } 332298943Sluigi if (failed != EX_OK) 332398943Sluigi exit(failed); 332498943Sluigi} 332598943Sluigi 332698943Sluigistatic void 3327101978Sluigiresetlog(int ac, char *av[]) 332898943Sluigi{ 332998943Sluigi int rulenum; 333098943Sluigi int failed = EX_OK; 333198943Sluigi 333298943Sluigi av++; ac--; 333398943Sluigi 333498943Sluigi if (!ac) { 333598943Sluigi /* clear all entries */ 333698943Sluigi if (setsockopt(s, IPPROTO_IP, IP_FW_RESETLOG, NULL, 0) < 0) 333798943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_FW_RESETLOG)"); 333898943Sluigi if (!do_quiet) 333998943Sluigi printf("Logging counts reset.\n"); 334098943Sluigi 334198943Sluigi return; 334298943Sluigi } 334398943Sluigi 334498943Sluigi while (ac) { 334598943Sluigi /* Rule number */ 334698943Sluigi if (isdigit(**av)) { 334798943Sluigi rulenum = atoi(*av); 334898943Sluigi av++; 334998943Sluigi ac--; 335098943Sluigi if (setsockopt(s, IPPROTO_IP, 335198943Sluigi IP_FW_RESETLOG, &rulenum, sizeof rulenum)) { 335298943Sluigi warn("rule %u: setsockopt(IP_FW_RESETLOG)", 335398943Sluigi rulenum); 335498943Sluigi failed = EX_UNAVAILABLE; 335598943Sluigi } else if (!do_quiet) 335698943Sluigi printf("Entry %d logging count reset\n", 335798943Sluigi rulenum); 335898943Sluigi } else { 335998943Sluigi errx(EX_DATAERR, "invalid rule number ``%s''", *av); 336098943Sluigi } 336198943Sluigi } 336298943Sluigi if (failed != EX_OK) 336398943Sluigi exit(failed); 336498943Sluigi} 336598943Sluigi 336698943Sluigistatic void 336798943Sluigiflush() 336898943Sluigi{ 336998943Sluigi int cmd = do_pipe ? IP_DUMMYNET_FLUSH : IP_FW_FLUSH; 337098943Sluigi 337198943Sluigi if (!do_force && !do_quiet) { /* need to ask user */ 337298943Sluigi int c; 337398943Sluigi 337498943Sluigi printf("Are you sure? [yn] "); 337598943Sluigi fflush(stdout); 337698943Sluigi do { 337798943Sluigi c = toupper(getc(stdin)); 337898943Sluigi while (c != '\n' && getc(stdin) != '\n') 337998943Sluigi if (feof(stdin)) 338098943Sluigi return; /* and do not flush */ 338198943Sluigi } while (c != 'Y' && c != 'N'); 338298943Sluigi printf("\n"); 338398943Sluigi if (c == 'N') /* user said no */ 338498943Sluigi return; 338598943Sluigi } 338698943Sluigi if (setsockopt(s, IPPROTO_IP, cmd, NULL, 0) < 0) 338798943Sluigi err(EX_UNAVAILABLE, "setsockopt(IP_%s_FLUSH)", 338898943Sluigi do_pipe ? "DUMMYNET" : "FW"); 338998943Sluigi if (!do_quiet) 339098943Sluigi printf("Flushed all %s.\n", do_pipe ? "pipes" : "rules"); 339198943Sluigi} 339298943Sluigi 339398943Sluigistatic int 339498943Sluigiipfw_main(int ac, char **av) 339598943Sluigi{ 339698943Sluigi int ch; 339798943Sluigi 339898943Sluigi if (ac == 1) 339998943Sluigi show_usage(); 340098943Sluigi 340198943Sluigi /* Set the force flag for non-interactive processes */ 340298943Sluigi do_force = !isatty(STDIN_FILENO); 340398943Sluigi 340498943Sluigi optind = optreset = 1; 3405102098Sluigi while ((ch = getopt(ac, av, "hs:acdefNqStv")) != -1) 340698943Sluigi switch (ch) { 340798943Sluigi case 'h': /* help */ 340898943Sluigi help(); 340998943Sluigi break; /* NOTREACHED */ 341098943Sluigi 341198943Sluigi case 's': /* sort */ 341298943Sluigi do_sort = atoi(optarg); 341398943Sluigi break; 341498943Sluigi case 'a': 341598943Sluigi do_acct = 1; 341698943Sluigi break; 3417102098Sluigi case 'c': 3418102098Sluigi do_compact = 1; 3419102098Sluigi break; 342098943Sluigi case 'd': 342198943Sluigi do_dynamic = 1; 342298943Sluigi break; 342398943Sluigi case 'e': 342498943Sluigi do_expired = 1; 342598943Sluigi break; 342698943Sluigi case 'f': 342798943Sluigi do_force = 1; 342898943Sluigi break; 342998943Sluigi case 'N': 343098943Sluigi do_resolv = 1; 343198943Sluigi break; 343298943Sluigi case 'q': 343398943Sluigi do_quiet = 1; 343498943Sluigi break; 3435101628Sluigi case 'S': 3436101628Sluigi show_sets = 1; 3437101628Sluigi break; 343898943Sluigi case 't': 343998943Sluigi do_time = 1; 344098943Sluigi break; 344198943Sluigi case 'v': /* verbose */ 344298943Sluigi verbose++; 344398943Sluigi break; 344498943Sluigi default: 344598943Sluigi show_usage(); 344698943Sluigi } 344798943Sluigi 344898943Sluigi ac -= optind; 344998943Sluigi av += optind; 345098943Sluigi NEED1("bad arguments, for usage summary ``ipfw''"); 345198943Sluigi 345298943Sluigi /* 345398943Sluigi * optional: pipe or queue 345498943Sluigi */ 345598943Sluigi if (!strncmp(*av, "pipe", strlen(*av))) { 345698943Sluigi do_pipe = 1; 345798943Sluigi ac--; 345898943Sluigi av++; 345998943Sluigi } else if (!strncmp(*av, "queue", strlen(*av))) { 346098943Sluigi do_pipe = 2; 346198943Sluigi ac--; 346298943Sluigi av++; 346398943Sluigi } 346498943Sluigi NEED1("missing command"); 346598943Sluigi 346698943Sluigi /* 346798943Sluigi * for pipes and queues we normally say 'pipe NN config' 346898943Sluigi * but the code is easier to parse as 'pipe config NN' 346998943Sluigi * so we swap the two arguments. 347098943Sluigi */ 347198943Sluigi if (do_pipe > 0 && ac > 1 && *av[0] >= '0' && *av[0] <= '9') { 347298943Sluigi char *p = av[0]; 347398943Sluigi av[0] = av[1]; 347498943Sluigi av[1] = p; 347598943Sluigi } 347698943Sluigi if (!strncmp(*av, "add", strlen(*av))) 347798943Sluigi add(ac, av); 347898943Sluigi else if (do_pipe && !strncmp(*av, "config", strlen(*av))) 347998943Sluigi config_pipe(ac, av); 3480101978Sluigi else if (!strncmp(*av, "delete", strlen(*av))) 348198943Sluigi delete(ac, av); 348298943Sluigi else if (!strncmp(*av, "flush", strlen(*av))) 348398943Sluigi flush(); 348498943Sluigi else if (!strncmp(*av, "zero", strlen(*av))) 348598943Sluigi zero(ac, av); 348698943Sluigi else if (!strncmp(*av, "resetlog", strlen(*av))) 348798943Sluigi resetlog(ac, av); 348898943Sluigi else if (!strncmp(*av, "print", strlen(*av)) || 348998943Sluigi !strncmp(*av, "list", strlen(*av))) 349098943Sluigi list(ac, av); 3491101978Sluigi else if (!strncmp(*av, "set", strlen(*av))) 3492101978Sluigi sets_handler(ac, av); 3493109126Sdillon else if (!strncmp(*av, "enable", strlen(*av))) 3494109126Sdillon sysctl_handler(ac, av, 1); 3495109126Sdillon else if (!strncmp(*av, "disable", strlen(*av))) 3496109126Sdillon sysctl_handler(ac, av, 0); 349798943Sluigi else if (!strncmp(*av, "show", strlen(*av))) { 349898943Sluigi do_acct++; 349998943Sluigi list(ac, av); 350098943Sluigi } else 350198943Sluigi errx(EX_USAGE, "bad command `%s'", *av); 350298943Sluigi return 0; 350398943Sluigi} 350498943Sluigi 350598943Sluigi 350698943Sluigistatic void 3507106505Smaximipfw_readfile(int ac, char *av[]) 350898943Sluigi{ 350998943Sluigi#define MAX_ARGS 32 351098943Sluigi#define WHITESP " \t\f\v\n\r" 351198943Sluigi char buf[BUFSIZ]; 351298943Sluigi char *a, *p, *args[MAX_ARGS], *cmd = NULL; 351398943Sluigi char linename[10]; 351498943Sluigi int i=0, lineno=0, qflag=0, pflag=0, status; 351598943Sluigi FILE *f = NULL; 351698943Sluigi pid_t preproc = 0; 351798943Sluigi int c; 351898943Sluigi 3519108231Skbyanc while ((c = getopt(ac, av, "p:q")) != -1) { 352098943Sluigi switch(c) { 352198943Sluigi case 'p': 352298943Sluigi pflag = 1; 352398943Sluigi cmd = optarg; 352498943Sluigi args[0] = cmd; 352598943Sluigi i = 1; 352698943Sluigi break; 352798943Sluigi 352898943Sluigi case 'q': 352998943Sluigi qflag = 1; 353098943Sluigi break; 353198943Sluigi 353298943Sluigi default: 353398943Sluigi errx(EX_USAGE, "bad arguments, for usage" 353498943Sluigi " summary ``ipfw''"); 353598943Sluigi } 353698943Sluigi 3537108231Skbyanc if (pflag) 3538108231Skbyanc break; 3539108231Skbyanc } 3540108231Skbyanc 3541108231Skbyanc if (pflag) { 3542108231Skbyanc /* Pass all but the last argument to the preprocessor. */ 3543108231Skbyanc while (optind < ac - 1) { 3544108231Skbyanc if (i >= MAX_ARGS) 3545108231Skbyanc errx(EX_USAGE, "too many preprocessor options"); 3546108231Skbyanc args[i++] = av[optind++]; 3547108231Skbyanc } 3548108231Skbyanc } 3549108231Skbyanc 355098943Sluigi av += optind; 355198943Sluigi ac -= optind; 355298943Sluigi if (ac != 1) 355398943Sluigi errx(EX_USAGE, "extraneous filename arguments"); 355498943Sluigi 355598943Sluigi if ((f = fopen(av[0], "r")) == NULL) 355698943Sluigi err(EX_UNAVAILABLE, "fopen: %s", av[0]); 355798943Sluigi 355898943Sluigi if (pflag) { 355998943Sluigi /* pipe through preprocessor (cpp or m4) */ 356098943Sluigi int pipedes[2]; 356198943Sluigi 356298943Sluigi args[i] = 0; 356398943Sluigi 356498943Sluigi if (pipe(pipedes) == -1) 356598943Sluigi err(EX_OSERR, "cannot create pipe"); 356698943Sluigi 356798943Sluigi switch((preproc = fork())) { 356898943Sluigi case -1: 356998943Sluigi err(EX_OSERR, "cannot fork"); 357098943Sluigi 357198943Sluigi case 0: 357298943Sluigi /* child */ 357398943Sluigi if (dup2(fileno(f), 0) == -1 357498943Sluigi || dup2(pipedes[1], 1) == -1) 357598943Sluigi err(EX_OSERR, "dup2()"); 357698943Sluigi fclose(f); 357798943Sluigi close(pipedes[1]); 357898943Sluigi close(pipedes[0]); 357998943Sluigi execvp(cmd, args); 358098943Sluigi err(EX_OSERR, "execvp(%s) failed", cmd); 358198943Sluigi 358298943Sluigi default: 358398943Sluigi /* parent */ 358498943Sluigi fclose(f); 358598943Sluigi close(pipedes[1]); 358698943Sluigi if ((f = fdopen(pipedes[0], "r")) == NULL) { 358798943Sluigi int savederrno = errno; 358898943Sluigi 358998943Sluigi (void)kill(preproc, SIGTERM); 359098943Sluigi errno = savederrno; 359198943Sluigi err(EX_OSERR, "fdopen()"); 359298943Sluigi } 359398943Sluigi } 359498943Sluigi } 359598943Sluigi 359698943Sluigi while (fgets(buf, BUFSIZ, f)) { 359798943Sluigi lineno++; 359898943Sluigi sprintf(linename, "Line %d", lineno); 359998943Sluigi args[0] = linename; 360098943Sluigi 360198943Sluigi if (*buf == '#') 360298943Sluigi continue; 360398943Sluigi if ((p = strchr(buf, '#')) != NULL) 360498943Sluigi *p = '\0'; 360598943Sluigi i = 1; 360698943Sluigi if (qflag) 360798943Sluigi args[i++] = "-q"; 360898943Sluigi for (a = strtok(buf, WHITESP); 360998943Sluigi a && i < MAX_ARGS; a = strtok(NULL, WHITESP), i++) 361098943Sluigi args[i] = a; 361198943Sluigi if (i == (qflag? 2: 1)) 361298943Sluigi continue; 361398943Sluigi if (i == MAX_ARGS) 361498943Sluigi errx(EX_USAGE, "%s: too many arguments", 361598943Sluigi linename); 361698943Sluigi args[i] = NULL; 361798943Sluigi 361898943Sluigi ipfw_main(i, args); 361998943Sluigi } 362098943Sluigi fclose(f); 362198943Sluigi if (pflag) { 362298943Sluigi if (waitpid(preproc, &status, 0) == -1) 362398943Sluigi errx(EX_OSERR, "waitpid()"); 362498943Sluigi if (WIFEXITED(status) && WEXITSTATUS(status) != EX_OK) 362598943Sluigi errx(EX_UNAVAILABLE, 362698943Sluigi "preprocessor exited with status %d", 362798943Sluigi WEXITSTATUS(status)); 362898943Sluigi else if (WIFSIGNALED(status)) 362998943Sluigi errx(EX_UNAVAILABLE, 363098943Sluigi "preprocessor exited with signal %d", 363198943Sluigi WTERMSIG(status)); 363298943Sluigi } 363398943Sluigi} 363498943Sluigi 363598943Sluigiint 363698943Sluigimain(int ac, char *av[]) 363798943Sluigi{ 363898943Sluigi s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); 363998943Sluigi if (s < 0) 364098943Sluigi err(EX_UNAVAILABLE, "socket"); 364198943Sluigi 364298943Sluigi /* 364398943Sluigi * If the last argument is an absolute pathname, interpret it 364498943Sluigi * as a file to be preprocessed. 364598943Sluigi */ 364698943Sluigi 364798943Sluigi if (ac > 1 && av[ac - 1][0] == '/' && access(av[ac - 1], R_OK) == 0) 364898943Sluigi ipfw_readfile(ac, av); 364998943Sluigi else 365098943Sluigi ipfw_main(ac, av); 365198943Sluigi return EX_OK; 365298943Sluigi} 3653