114 lines
3.1 KiB
C
114 lines
3.1 KiB
C
/* $NetBSD: stdhosts.c,v 1.10 1999/01/17 07:01:26 lukem Exp $ */
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/*
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* Copyright (c) 1994 Mats O Jansson <moj@stacken.kth.se>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Mats O Jansson
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: stdhosts.c,v 1.10 1999/01/17 07:01:26 lukem Exp $");
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#endif
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <ctype.h>
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#include <err.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <util.h>
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#include "protos.h"
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int main __P((int, char *[]));
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void usage __P((void));
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extern char *__progname; /* from crt0.o */
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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struct in_addr host_addr;
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FILE *data_file;
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size_t line_no;
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size_t len;
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char *k, *v, *addr_string, *fname;
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addr_string = NULL; /* XXX gcc -Wuninitialized */
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if (argc > 2)
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usage();
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if (argc == 2) {
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fname = argv[1];
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data_file = fopen(fname, "r");
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if (data_file == NULL)
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err(1, "%s", fname);
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} else {
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fname = "<stdin>";
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data_file = stdin;
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}
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line_no = 0;
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for (;
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(v = fparseln(data_file, &len, &line_no, NULL, FPARSELN_UNESCALL));
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free(v)) {
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if (len == 0)
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continue;
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for (k = v; *v && !isspace(*v); v++)
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;
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while (*v && isspace(*v))
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*v++ = '\0';
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if (inet_aton(k, &host_addr) == 0 ||
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(addr_string = inet_ntoa(host_addr)) == NULL) {
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warnx("%s line %lu: syntax error", fname,
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(unsigned long)line_no);
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} else
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printf("%s %s\n", addr_string, v);
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}
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exit(0);
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}
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void
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usage()
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{
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fprintf(stderr, "usage: %s [file]\n", __progname);
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exit(1);
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}
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