main.c revision 222745
1187767Sluigi/* 2204591Sluigi * Copyright (c) 2002-2003,2010 Luigi Rizzo 3187767Sluigi * Copyright (c) 1996 Alex Nash, Paul Traina, Poul-Henning Kamp 4187767Sluigi * Copyright (c) 1994 Ugen J.S.Antsilevich 5187767Sluigi * 6187767Sluigi * Idea and grammar partially left from: 7187767Sluigi * Copyright (c) 1993 Daniel Boulet 8187767Sluigi * 9187767Sluigi * Redistribution and use in source forms, with and without modification, 10187767Sluigi * are permitted provided that this entire comment appears intact. 11187767Sluigi * 12187767Sluigi * Redistribution in binary form may occur without any restrictions. 13187767Sluigi * Obviously, it would be nice if you gave credit where credit is due 14187767Sluigi * but requiring it would be too onerous. 15187767Sluigi * 16187767Sluigi * This software is provided ``AS IS'' without any warranties of any kind. 17187767Sluigi * 18187767Sluigi * Command line interface for IP firewall facility 19187767Sluigi * 20187767Sluigi * $FreeBSD: head/sbin/ipfw/main.c 222745 2011-06-06 11:10:38Z ae $ 21187767Sluigi */ 22187767Sluigi 23187767Sluigi#include <sys/wait.h> 24187767Sluigi#include <ctype.h> 25187767Sluigi#include <err.h> 26187767Sluigi#include <errno.h> 27187767Sluigi#include <signal.h> 28187767Sluigi#include <stdio.h> 29187767Sluigi#include <stdlib.h> 30187767Sluigi#include <string.h> 31187767Sluigi#include <sysexits.h> 32187767Sluigi#include <unistd.h> 33187767Sluigi 34187767Sluigi#include "ipfw2.h" 35187767Sluigi 36187767Sluigistatic void 37187767Sluigihelp(void) 38187767Sluigi{ 39187767Sluigi fprintf(stderr, 40187767Sluigi"ipfw syntax summary (but please do read the ipfw(8) manpage):\n\n" 41187767Sluigi"\tipfw [-abcdefhnNqStTv] <command>\n\n" 42187767Sluigi"where <command> is one of the following:\n\n" 43187767Sluigi"add [num] [set N] [prob x] RULE-BODY\n" 44187767Sluigi"{pipe|queue} N config PIPE-BODY\n" 45187767Sluigi"[pipe|queue] {zero|delete|show} [N{,N}]\n" 46187767Sluigi"nat N config {ip IPADDR|if IFNAME|log|deny_in|same_ports|unreg_only|reset|\n" 47187767Sluigi" reverse|proxy_only|redirect_addr linkspec|\n" 48187767Sluigi" redirect_port linkspec|redirect_proto linkspec}\n" 49187767Sluigi"set [disable N... enable N...] | move [rule] X to Y | swap X Y | show\n" 50187767Sluigi"set N {show|list|zero|resetlog|delete} [N{,N}] | flush\n" 51187767Sluigi"table N {add ip[/bits] [value] | delete ip[/bits] | flush | list}\n" 52187767Sluigi"table all {flush | list}\n" 53187767Sluigi"\n" 54187767Sluigi"RULE-BODY: check-state [PARAMS] | ACTION [PARAMS] ADDR [OPTION_LIST]\n" 55187767Sluigi"ACTION: check-state | allow | count | deny | unreach{,6} CODE |\n" 56187767Sluigi" skipto N | {divert|tee} PORT | forward ADDR |\n" 57190633Spiso" pipe N | queue N | nat N | setfib FIB | reass\n" 58187767Sluigi"PARAMS: [log [logamount LOGLIMIT]] [altq QUEUE_NAME]\n" 59187767Sluigi"ADDR: [ MAC dst src ether_type ] \n" 60187767Sluigi" [ ip from IPADDR [ PORT ] to IPADDR [ PORTLIST ] ]\n" 61187767Sluigi" [ ipv6|ip6 from IP6ADDR [ PORT ] to IP6ADDR [ PORTLIST ] ]\n" 62187767Sluigi"IPADDR: [not] { any | me | ip/bits{x,y,z} | table(t[,v]) | IPLIST }\n" 63187767Sluigi"IP6ADDR: [not] { any | me | me6 | ip6/bits | IP6LIST }\n" 64187767Sluigi"IP6LIST: { ip6 | ip6/bits }[,IP6LIST]\n" 65187767Sluigi"IPLIST: { ip | ip/bits | ip:mask }[,IPLIST]\n" 66187767Sluigi"OPTION_LIST: OPTION [OPTION_LIST]\n" 67187767Sluigi"OPTION: bridged | diverted | diverted-loopback | diverted-output |\n" 68187767Sluigi" {dst-ip|src-ip} IPADDR | {dst-ip6|src-ip6|dst-ipv6|src-ipv6} IP6ADDR |\n" 69187767Sluigi" {dst-port|src-port} LIST |\n" 70187767Sluigi" estab | frag | {gid|uid} N | icmptypes LIST | in | out | ipid LIST |\n" 71187767Sluigi" iplen LIST | ipoptions SPEC | ipprecedence | ipsec | iptos SPEC |\n" 72187767Sluigi" ipttl LIST | ipversion VER | keep-state | layer2 | limit ... |\n" 73187767Sluigi" icmp6types LIST | ext6hdr LIST | flow-id N[,N] | fib FIB |\n" 74187767Sluigi" mac ... | mac-type LIST | proto LIST | {recv|xmit|via} {IF|IPADDR} |\n" 75187767Sluigi" setup | {tcpack|tcpseq|tcpwin} NN | tcpflags SPEC | tcpoptions SPEC |\n" 76187767Sluigi" tcpdatalen LIST | verrevpath | versrcreach | antispoof\n" 77187767Sluigi); 78187767Sluigi 79187767Sluigi exit(0); 80187767Sluigi} 81187767Sluigi 82187767Sluigi/* 83187767Sluigi * Called with the arguments, including program name because getopt 84187767Sluigi * wants it to be present. 85187767Sluigi * Returns 0 if successful, 1 if empty command, errx() in case of errors. 86204591Sluigi * First thing we do is process parameters creating an argv[] array 87204591Sluigi * which includes the program name and a NULL entry at the end. 88204591Sluigi * If we are called with a single string, we split it on whitespace. 89204591Sluigi * Also, arguments with a trailing ',' are joined to the next one. 90204591Sluigi * The pointers (av[]) and data are in a a single chunk of memory. 91204591Sluigi * av[0] points to the original program name, all other entries 92204591Sluigi * point into the allocated chunk. 93187767Sluigi */ 94187767Sluigistatic int 95187767Sluigiipfw_main(int oldac, char **oldav) 96187767Sluigi{ 97204591Sluigi int ch, ac; 98187767Sluigi const char *errstr; 99187767Sluigi char **av, **save_av; 100187767Sluigi int do_acct = 0; /* Show packet/byte count */ 101189396Sluigi int try_next = 0; /* set if pipe cmd not found */ 102204591Sluigi int av_size; /* compute the av size */ 103204591Sluigi char *av_p; /* used to build the av list */ 104187767Sluigi 105187767Sluigi#define WHITESP " \t\f\v\n\r" 106187767Sluigi if (oldac < 2) 107187767Sluigi return 1; /* need at least one argument */ 108187767Sluigi 109187767Sluigi if (oldac == 2) { 110187767Sluigi /* 111204591Sluigi * If we are called with one argument, try to split it into 112204591Sluigi * words for subsequent parsing. Spaces after a ',' are 113204591Sluigi * removed by copying the string in-place. 114187767Sluigi */ 115187767Sluigi char *arg = oldav[1]; /* The string is the first arg. */ 116187767Sluigi int l = strlen(arg); 117187767Sluigi int copy = 0; /* 1 if we need to copy, 0 otherwise */ 118187767Sluigi int i, j; 119187767Sluigi 120187767Sluigi for (i = j = 0; i < l; i++) { 121187767Sluigi if (arg[i] == '#') /* comment marker */ 122187767Sluigi break; 123187767Sluigi if (copy) { 124187767Sluigi arg[j++] = arg[i]; 125187767Sluigi copy = !index("," WHITESP, arg[i]); 126187767Sluigi } else { 127187767Sluigi copy = !index(WHITESP, arg[i]); 128187767Sluigi if (copy) 129187767Sluigi arg[j++] = arg[i]; 130187767Sluigi } 131187767Sluigi } 132187767Sluigi if (!copy && j > 0) /* last char was a 'blank', remove it */ 133187767Sluigi j--; 134187767Sluigi l = j; /* the new argument length */ 135187767Sluigi arg[j++] = '\0'; 136187767Sluigi if (l == 0) /* empty string! */ 137187767Sluigi return 1; 138187767Sluigi 139187767Sluigi /* 140187767Sluigi * First, count number of arguments. Because of the previous 141187767Sluigi * processing, this is just the number of blanks plus 1. 142187767Sluigi */ 143187767Sluigi for (i = 0, ac = 1; i < l; i++) 144187767Sluigi if (index(WHITESP, arg[i]) != NULL) 145187767Sluigi ac++; 146187767Sluigi 147187767Sluigi /* 148204591Sluigi * Allocate the argument list structure as a single block 149204591Sluigi * of memory, containing pointers and the argument 150204591Sluigi * strings. We include one entry for the program name 151204591Sluigi * because getopt expects it, and a NULL at the end 152204591Sluigi * to simplify further parsing. 153187767Sluigi */ 154204591Sluigi ac++; /* add 1 for the program name */ 155204591Sluigi av_size = (ac+1) * sizeof(char *) + l + 1; 156204591Sluigi av = safe_calloc(av_size, 1); 157187767Sluigi 158187767Sluigi /* 159204591Sluigi * Init the argument pointer to the end of the array 160204591Sluigi * and copy arguments from arg[] to av[]. For each one, 161187767Sluigi * j is the initial character, i is the one past the end. 162187767Sluigi */ 163204591Sluigi av_p = (char *)&av[ac+1]; 164204591Sluigi for (ac = 1, i = j = 0; i < l; i++) { 165187767Sluigi if (index(WHITESP, arg[i]) != NULL || i == l-1) { 166187767Sluigi if (i == l-1) 167187767Sluigi i++; 168204591Sluigi bcopy(arg+j, av_p, i-j); 169204591Sluigi av[ac] = av_p; 170204591Sluigi av_p += i-j; /* the lenght of the string */ 171204591Sluigi *av_p++ = '\0'; 172187767Sluigi ac++; 173187767Sluigi j = i + 1; 174187767Sluigi } 175204591Sluigi } 176187767Sluigi } else { 177187767Sluigi /* 178187767Sluigi * If an argument ends with ',' join with the next one. 179187767Sluigi */ 180204591Sluigi int first, i, l=0; 181187767Sluigi 182204591Sluigi /* 183204591Sluigi * Allocate the argument list structure as a single block 184204591Sluigi * of memory, containing both pointers and the argument 185204591Sluigi * strings. We include some space for the program name 186204591Sluigi * because getopt expects it. 187204591Sluigi * We add an extra pointer to the end of the array, 188204591Sluigi * to make simpler further parsing. 189204591Sluigi */ 190204591Sluigi for (i=0; i<oldac; i++) 191204591Sluigi l += strlen(oldav[i]); 192204591Sluigi 193204591Sluigi av_size = (oldac+1) * sizeof(char *) + l + oldac; 194204591Sluigi av = safe_calloc(av_size, 1); 195204591Sluigi 196204591Sluigi /* 197204591Sluigi * Init the argument pointer to the end of the array 198204591Sluigi * and copy arguments from arg[] to av[] 199204591Sluigi */ 200204591Sluigi av_p = (char *)&av[oldac+1]; 201187767Sluigi for (first = i = ac = 1, l = 0; i < oldac; i++) { 202187767Sluigi char *arg = oldav[i]; 203187767Sluigi int k = strlen(arg); 204187767Sluigi 205187767Sluigi l += k; 206187767Sluigi if (arg[k-1] != ',' || i == oldac-1) { 207187767Sluigi /* Time to copy. */ 208204591Sluigi av[ac] = av_p; 209187767Sluigi for (l=0; first <= i; first++) { 210204591Sluigi strcat(av_p, oldav[first]); 211204591Sluigi av_p += strlen(oldav[first]); 212187767Sluigi } 213204591Sluigi *av_p++ = '\0'; 214187767Sluigi ac++; 215187767Sluigi l = 0; 216187767Sluigi first = i+1; 217187767Sluigi } 218187767Sluigi } 219187767Sluigi } 220187767Sluigi 221204591Sluigi /* 222204591Sluigi * set the progname pointer to the original string 223204591Sluigi * and terminate the array with null 224204591Sluigi */ 225204591Sluigi av[0] = oldav[0]; 226204591Sluigi av[ac] = NULL; 227204591Sluigi 228187767Sluigi /* Set the force flag for non-interactive processes */ 229187767Sluigi if (!co.do_force) 230187767Sluigi co.do_force = !isatty(STDIN_FILENO); 231187767Sluigi 232204591Sluigi#ifdef EMULATE_SYSCTL /* sysctl emulation */ 233204591Sluigi if ( ac >= 2 && !strcmp(av[1], "sysctl")) { 234204591Sluigi char *s; 235204591Sluigi int i; 236204591Sluigi 237204591Sluigi if (ac != 3) { 238204591Sluigi printf( "sysctl emulation usage:\n" 239204591Sluigi " ipfw sysctl name[=value]\n" 240204591Sluigi " ipfw sysctl -a\n"); 241204591Sluigi return 0; 242204591Sluigi } 243204591Sluigi s = index(av[2], '='); 244204591Sluigi if (s == NULL) { 245204591Sluigi s = !strcmp(av[2], "-a") ? NULL : av[2]; 246204591Sluigi sysctlbyname(s, NULL, NULL, NULL, 0); 247204591Sluigi } else { /* ipfw sysctl x.y.z=value */ 248204591Sluigi /* assume an INT value, will extend later */ 249204591Sluigi if (s[1] == '\0') { 250204591Sluigi printf("ipfw sysctl: missing value\n\n"); 251204591Sluigi return 0; 252204591Sluigi } 253204591Sluigi *s = '\0'; 254204591Sluigi i = strtol(s+1, NULL, 0); 255204591Sluigi sysctlbyname(av[2], NULL, NULL, &i, sizeof(int)); 256204591Sluigi } 257204591Sluigi return 0; 258204591Sluigi } 259204591Sluigi#endif 260204591Sluigi 261187767Sluigi /* Save arguments for final freeing of memory. */ 262187767Sluigi save_av = av; 263187767Sluigi 264187767Sluigi optind = optreset = 1; /* restart getopt() */ 265187767Sluigi while ((ch = getopt(ac, av, "abcdefhinNqs:STtv")) != -1) 266187767Sluigi switch (ch) { 267187767Sluigi case 'a': 268187767Sluigi do_acct = 1; 269187767Sluigi break; 270187767Sluigi 271187767Sluigi case 'b': 272187767Sluigi co.comment_only = 1; 273187767Sluigi co.do_compact = 1; 274187767Sluigi break; 275187767Sluigi 276187767Sluigi case 'c': 277187767Sluigi co.do_compact = 1; 278187767Sluigi break; 279187767Sluigi 280187767Sluigi case 'd': 281187767Sluigi co.do_dynamic = 1; 282187767Sluigi break; 283187767Sluigi 284187767Sluigi case 'e': 285187767Sluigi co.do_expired = 1; 286187767Sluigi break; 287187767Sluigi 288187767Sluigi case 'f': 289187767Sluigi co.do_force = 1; 290187767Sluigi break; 291187767Sluigi 292187767Sluigi case 'h': /* help */ 293204591Sluigi free(save_av); 294187767Sluigi help(); 295187767Sluigi break; /* NOTREACHED */ 296187767Sluigi 297187767Sluigi case 'i': 298187767Sluigi co.do_value_as_ip = 1; 299187767Sluigi break; 300187767Sluigi 301187767Sluigi case 'n': 302187767Sluigi co.test_only = 1; 303187767Sluigi break; 304187767Sluigi 305187767Sluigi case 'N': 306187767Sluigi co.do_resolv = 1; 307187767Sluigi break; 308187767Sluigi 309187767Sluigi case 'q': 310187767Sluigi co.do_quiet = 1; 311187767Sluigi break; 312187767Sluigi 313187767Sluigi case 's': /* sort */ 314187767Sluigi co.do_sort = atoi(optarg); 315187767Sluigi break; 316187767Sluigi 317187767Sluigi case 'S': 318187767Sluigi co.show_sets = 1; 319187767Sluigi break; 320187767Sluigi 321187767Sluigi case 't': 322187767Sluigi co.do_time = 1; 323187767Sluigi break; 324187767Sluigi 325187767Sluigi case 'T': 326187767Sluigi co.do_time = 2; /* numeric timestamp */ 327187767Sluigi break; 328187767Sluigi 329187767Sluigi case 'v': /* verbose */ 330187767Sluigi co.verbose = 1; 331187767Sluigi break; 332187767Sluigi 333187767Sluigi default: 334204591Sluigi free(save_av); 335187767Sluigi return 1; 336187767Sluigi } 337187767Sluigi 338187767Sluigi ac -= optind; 339187767Sluigi av += optind; 340187767Sluigi NEED1("bad arguments, for usage summary ``ipfw''"); 341187767Sluigi 342187767Sluigi /* 343187767Sluigi * An undocumented behaviour of ipfw1 was to allow rule numbers first, 344187767Sluigi * e.g. "100 add allow ..." instead of "add 100 allow ...". 345187767Sluigi * In case, swap first and second argument to get the normal form. 346187767Sluigi */ 347187767Sluigi if (ac > 1 && isdigit(*av[0])) { 348187767Sluigi char *p = av[0]; 349187767Sluigi 350187767Sluigi av[0] = av[1]; 351187767Sluigi av[1] = p; 352187767Sluigi } 353187767Sluigi 354187767Sluigi /* 355187767Sluigi * Optional: pipe, queue or nat. 356187767Sluigi */ 357187767Sluigi co.do_nat = 0; 358187767Sluigi co.do_pipe = 0; 359222745Sae co.use_set = 0; 360187767Sluigi if (!strncmp(*av, "nat", strlen(*av))) 361220802Sglebius co.do_nat = 1; 362187767Sluigi else if (!strncmp(*av, "pipe", strlen(*av))) 363187767Sluigi co.do_pipe = 1; 364187767Sluigi else if (_substrcmp(*av, "queue") == 0) 365187767Sluigi co.do_pipe = 2; 366204591Sluigi else if (_substrcmp(*av, "flowset") == 0) 367204591Sluigi co.do_pipe = 2; 368204591Sluigi else if (_substrcmp(*av, "sched") == 0) 369204591Sluigi co.do_pipe = 3; 370187767Sluigi else if (!strncmp(*av, "set", strlen(*av))) { 371187767Sluigi if (ac > 1 && isdigit(av[1][0])) { 372187767Sluigi co.use_set = strtonum(av[1], 0, resvd_set_number, 373187767Sluigi &errstr); 374187767Sluigi if (errstr) 375187767Sluigi errx(EX_DATAERR, 376187767Sluigi "invalid set number %s\n", av[1]); 377187767Sluigi ac -= 2; av += 2; co.use_set++; 378187767Sluigi } 379187767Sluigi } 380187767Sluigi 381187767Sluigi if (co.do_pipe || co.do_nat) { 382187767Sluigi ac--; 383187767Sluigi av++; 384187767Sluigi } 385187767Sluigi NEED1("missing command"); 386187767Sluigi 387187767Sluigi /* 388187767Sluigi * For pipes, queues and nats we normally say 'nat|pipe NN config' 389187767Sluigi * but the code is easier to parse as 'nat|pipe config NN' 390187767Sluigi * so we swap the two arguments. 391187767Sluigi */ 392187767Sluigi if ((co.do_pipe || co.do_nat) && ac > 1 && isdigit(*av[0])) { 393187767Sluigi char *p = av[0]; 394187767Sluigi 395187767Sluigi av[0] = av[1]; 396187767Sluigi av[1] = p; 397187767Sluigi } 398187767Sluigi 399187767Sluigi if (co.use_set == 0) { 400187767Sluigi if (_substrcmp(*av, "add") == 0) 401204591Sluigi ipfw_add(av); 402187767Sluigi else if (co.do_nat && _substrcmp(*av, "show") == 0) 403187767Sluigi ipfw_show_nat(ac, av); 404187767Sluigi else if (co.do_pipe && _substrcmp(*av, "config") == 0) 405187767Sluigi ipfw_config_pipe(ac, av); 406187767Sluigi else if (co.do_nat && _substrcmp(*av, "config") == 0) 407187767Sluigi ipfw_config_nat(ac, av); 408187767Sluigi else if (_substrcmp(*av, "set") == 0) 409204591Sluigi ipfw_sets_handler(av); 410187767Sluigi else if (_substrcmp(*av, "table") == 0) 411187767Sluigi ipfw_table_handler(ac, av); 412187767Sluigi else if (_substrcmp(*av, "enable") == 0) 413204591Sluigi ipfw_sysctl_handler(av, 1); 414187767Sluigi else if (_substrcmp(*av, "disable") == 0) 415204591Sluigi ipfw_sysctl_handler(av, 0); 416187767Sluigi else 417187767Sluigi try_next = 1; 418187767Sluigi } 419187767Sluigi 420187767Sluigi if (co.use_set || try_next) { 421187767Sluigi if (_substrcmp(*av, "delete") == 0) 422204591Sluigi ipfw_delete(av); 423187767Sluigi else if (_substrcmp(*av, "flush") == 0) 424187767Sluigi ipfw_flush(co.do_force); 425187767Sluigi else if (_substrcmp(*av, "zero") == 0) 426187767Sluigi ipfw_zero(ac, av, 0 /* IP_FW_ZERO */); 427187767Sluigi else if (_substrcmp(*av, "resetlog") == 0) 428187767Sluigi ipfw_zero(ac, av, 1 /* IP_FW_RESETLOG */); 429187767Sluigi else if (_substrcmp(*av, "print") == 0 || 430220802Sglebius _substrcmp(*av, "list") == 0) 431187767Sluigi ipfw_list(ac, av, do_acct); 432187767Sluigi else if (_substrcmp(*av, "show") == 0) 433187767Sluigi ipfw_list(ac, av, 1 /* show counters */); 434187767Sluigi else 435187767Sluigi errx(EX_USAGE, "bad command `%s'", *av); 436187767Sluigi } 437187767Sluigi 438187767Sluigi /* Free memory allocated in the argument parsing. */ 439204591Sluigi free(save_av); 440187767Sluigi return 0; 441187767Sluigi} 442187767Sluigi 443187767Sluigi 444187767Sluigistatic void 445187767Sluigiipfw_readfile(int ac, char *av[]) 446187767Sluigi{ 447187767Sluigi#define MAX_ARGS 32 448222744Sae char buf[4096]; 449187767Sluigi char *progname = av[0]; /* original program name */ 450187767Sluigi const char *cmd = NULL; /* preprocessor name, if any */ 451187767Sluigi const char *filename = av[ac-1]; /* file to read */ 452187767Sluigi int c, lineno=0; 453187767Sluigi FILE *f = NULL; 454187767Sluigi pid_t preproc = 0; 455187767Sluigi 456187767Sluigi while ((c = getopt(ac, av, "cfNnp:qS")) != -1) { 457187767Sluigi switch(c) { 458187767Sluigi case 'c': 459187767Sluigi co.do_compact = 1; 460187767Sluigi break; 461187767Sluigi 462187767Sluigi case 'f': 463187767Sluigi co.do_force = 1; 464187767Sluigi break; 465187767Sluigi 466187767Sluigi case 'N': 467187767Sluigi co.do_resolv = 1; 468187767Sluigi break; 469187767Sluigi 470187767Sluigi case 'n': 471187767Sluigi co.test_only = 1; 472187767Sluigi break; 473187767Sluigi 474187767Sluigi case 'p': 475187767Sluigi /* 476187767Sluigi * ipfw -p cmd [args] filename 477187767Sluigi * 478187767Sluigi * We are done with getopt(). All arguments 479187767Sluigi * except the filename go to the preprocessor, 480187767Sluigi * so we need to do the following: 481187767Sluigi * - check that a filename is actually present; 482187767Sluigi * - advance av by optind-1 to skip arguments 483187767Sluigi * already processed; 484187767Sluigi * - decrease ac by optind, to remove the args 485187767Sluigi * already processed and the final filename; 486187767Sluigi * - set the last entry in av[] to NULL so 487187767Sluigi * popen() can detect the end of the array; 488187767Sluigi * - set optind=ac to let getopt() terminate. 489187767Sluigi */ 490187767Sluigi if (optind == ac) 491187767Sluigi errx(EX_USAGE, "no filename argument"); 492187767Sluigi cmd = optarg; 493187767Sluigi av[ac-1] = NULL; 494187767Sluigi av += optind - 1; 495187767Sluigi ac -= optind; 496187767Sluigi optind = ac; 497187767Sluigi break; 498187767Sluigi 499187767Sluigi case 'q': 500187767Sluigi co.do_quiet = 1; 501187767Sluigi break; 502187767Sluigi 503187767Sluigi case 'S': 504187767Sluigi co.show_sets = 1; 505187767Sluigi break; 506187767Sluigi 507187767Sluigi default: 508187767Sluigi errx(EX_USAGE, "bad arguments, for usage" 509187767Sluigi " summary ``ipfw''"); 510187767Sluigi } 511187767Sluigi 512187767Sluigi } 513187767Sluigi 514187767Sluigi if (cmd == NULL && ac != optind + 1) 515187767Sluigi errx(EX_USAGE, "extraneous filename arguments %s", av[ac-1]); 516187767Sluigi 517187767Sluigi if ((f = fopen(filename, "r")) == NULL) 518187767Sluigi err(EX_UNAVAILABLE, "fopen: %s", filename); 519187767Sluigi 520187767Sluigi if (cmd != NULL) { /* pipe through preprocessor */ 521187767Sluigi int pipedes[2]; 522187767Sluigi 523187767Sluigi if (pipe(pipedes) == -1) 524187767Sluigi err(EX_OSERR, "cannot create pipe"); 525187767Sluigi 526187767Sluigi preproc = fork(); 527187767Sluigi if (preproc == -1) 528187767Sluigi err(EX_OSERR, "cannot fork"); 529187767Sluigi 530187767Sluigi if (preproc == 0) { 531187767Sluigi /* 532187767Sluigi * Child, will run the preprocessor with the 533187767Sluigi * file on stdin and the pipe on stdout. 534187767Sluigi */ 535187767Sluigi if (dup2(fileno(f), 0) == -1 536187767Sluigi || dup2(pipedes[1], 1) == -1) 537187767Sluigi err(EX_OSERR, "dup2()"); 538187767Sluigi fclose(f); 539187767Sluigi close(pipedes[1]); 540187767Sluigi close(pipedes[0]); 541187767Sluigi execvp(cmd, av); 542187767Sluigi err(EX_OSERR, "execvp(%s) failed", cmd); 543187767Sluigi } else { /* parent, will reopen f as the pipe */ 544187767Sluigi fclose(f); 545187767Sluigi close(pipedes[1]); 546187767Sluigi if ((f = fdopen(pipedes[0], "r")) == NULL) { 547187767Sluigi int savederrno = errno; 548187767Sluigi 549187767Sluigi (void)kill(preproc, SIGTERM); 550187767Sluigi errno = savederrno; 551187767Sluigi err(EX_OSERR, "fdopen()"); 552187767Sluigi } 553187767Sluigi } 554187767Sluigi } 555187767Sluigi 556222744Sae while (fgets(buf, sizeof(buf), f)) { /* read commands */ 557206494Sluigi char linename[20]; 558187767Sluigi char *args[2]; 559187767Sluigi 560187767Sluigi lineno++; 561206494Sluigi snprintf(linename, sizeof(linename), "Line %d", lineno); 562187767Sluigi setprogname(linename); /* XXX */ 563187767Sluigi args[0] = progname; 564187767Sluigi args[1] = buf; 565187767Sluigi ipfw_main(2, args); 566187767Sluigi } 567187767Sluigi fclose(f); 568187767Sluigi if (cmd != NULL) { 569187767Sluigi int status; 570187767Sluigi 571187767Sluigi if (waitpid(preproc, &status, 0) == -1) 572187767Sluigi errx(EX_OSERR, "waitpid()"); 573187767Sluigi if (WIFEXITED(status) && WEXITSTATUS(status) != EX_OK) 574187767Sluigi errx(EX_UNAVAILABLE, 575187767Sluigi "preprocessor exited with status %d", 576187767Sluigi WEXITSTATUS(status)); 577187767Sluigi else if (WIFSIGNALED(status)) 578187767Sluigi errx(EX_UNAVAILABLE, 579187767Sluigi "preprocessor exited with signal %d", 580187767Sluigi WTERMSIG(status)); 581187767Sluigi } 582187767Sluigi} 583187767Sluigi 584187767Sluigiint 585187767Sluigimain(int ac, char *av[]) 586187767Sluigi{ 587204716Sluigi#if defined(_WIN32) && defined(TCC) 588204716Sluigi { 589204716Sluigi WSADATA wsaData; 590204716Sluigi int ret=0; 591204716Sluigi unsigned short wVersionRequested = MAKEWORD(2, 2); 592204716Sluigi ret = WSAStartup(wVersionRequested, &wsaData); 593204716Sluigi if (ret != 0) { 594204716Sluigi /* Tell the user that we could not find a usable */ 595220802Sglebius /* Winsock DLL. */ 596204716Sluigi printf("WSAStartup failed with error: %d\n", ret); 597204716Sluigi return 1; 598204716Sluigi } 599204716Sluigi } 600204716Sluigi#endif 601187767Sluigi /* 602187767Sluigi * If the last argument is an absolute pathname, interpret it 603187767Sluigi * as a file to be preprocessed. 604187767Sluigi */ 605187767Sluigi 606187767Sluigi if (ac > 1 && av[ac - 1][0] == '/' && access(av[ac - 1], R_OK) == 0) 607187767Sluigi ipfw_readfile(ac, av); 608187767Sluigi else { 609187767Sluigi if (ipfw_main(ac, av)) { 610187767Sluigi errx(EX_USAGE, 611187767Sluigi "usage: ipfw [options]\n" 612187767Sluigi "do \"ipfw -h\" or \"man ipfw\" for details"); 613187767Sluigi } 614187767Sluigi } 615187767Sluigi return EX_OK; 616187767Sluigi} 617