1/*
2 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
7 * Reserved.  This file contains Original Code and/or Modifications of
8 * Original Code as defined in and that are subject to the Apple Public
9 * Source License Version 1.0 (the 'License').  You may not use this file
10 * except in compliance with the License.  Please obtain a copy of the
11 * License at http://www.apple.com/publicsource and read it before using
12 * this file.
13 *
14 * The Original Code and all software distributed under the License are
15 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
19 * License for the specific language governing rights and limitations
20 * under the License."
21 *
22 * @APPLE_LICENSE_HEADER_END@
23 */
24/*	$OpenBSD: stdhosts.c,v 1.4 1997/09/11 19:47:35 deraadt Exp $ */
25
26/*
27 * Copyright (c) 1994 Mats O Jansson <moj@stacken.kth.se>
28 * All rights reserved.
29 *
30 * Redistribution and use in source and binary forms, with or without
31 * modification, are permitted provided that the following conditions
32 * are met:
33 * 1. Redistributions of source code must retain the above copyright
34 *    notice, this list of conditions and the following disclaimer.
35 * 2. Redistributions in binary form must reproduce the above copyright
36 *    notice, this list of conditions and the following disclaimer in the
37 *    documentation and/or other materials provided with the distribution.
38 * 3. All advertising materials mentioning features or use of this software
39 *    must display the following acknowledgement:
40 *	This product includes software developed by Mats O Jansson
41 * 4. The name of the author may not be used to endorse or promote products
42 *    derived from this software without specific prior written permission.
43 *
44 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
45 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
46 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
47 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
48 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
49 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
50 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
51 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
52 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
53 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
54 * SUCH DAMAGE.
55 */
56
57#include <sys/cdefs.h>
58#ifndef LINT
59__unused static char rcsid[] = "$OpenBSD: stdhosts.c,v 1.4 1997/09/11 19:47:35 deraadt Exp $";
60#endif
61
62#include <sys/types.h>
63#include <sys/socket.h>
64#include <netinet/in.h>
65#include <arpa/inet.h>
66#include <stdio.h>
67#include <stdlib.h>
68#include <string.h>
69#include <ctype.h>
70
71static int read_line(fp, buf, size)
72FILE *fp;
73char *buf;
74int size;
75{
76	int done = 0;
77
78	do {
79		while (fgets(buf, size, fp)) {
80			int len = strlen(buf);
81			done += len;
82			if (len > 1 && buf[len-2] == '\\' &&
83					buf[len-1] == '\n') {
84				int ch;
85				buf += len - 2;
86				size -= len - 2;
87				*buf = '\n'; buf[1] = '\0';
88				/*
89				 * Skip leading white space on next line
90				 */
91				while ((ch = getc(fp)) != EOF &&
92					isascii(ch) && isspace(ch))
93						;
94				(void) ungetc(ch, fp);
95			} else {
96				return done;
97			}
98		}
99	} while (size > 0 && !feof(fp));
100
101	return done;
102}
103
104int
105main (argc,argv)
106int argc;
107char *argv[];
108{
109  FILE	*data_file;
110  char	 data_line[1024];
111  int	 usage = 0;
112  int	 line_no = 0;
113  int	 len;
114  char	*p,*k,*v;
115  struct in_addr host_addr;
116
117  if (argc > 2) {
118    usage++;
119  }
120
121  if (usage) {
122    fprintf(stderr,
123	    "%s",
124	    "usage: stdhosts [file]\n");
125    exit(1);
126  }
127
128  if (argc == 2) {
129    data_file = fopen(argv[argc-1], "r");
130  } else {
131    data_file = stdin;
132  }
133
134  while (read_line(data_file,data_line,sizeof(data_line))) {
135
136    line_no++;
137    len = strlen(data_line);
138
139    if (len > 0) {
140      if (data_line[0] == '#')
141	continue;
142    }
143
144    /*
145     * Check if we have the whole line
146     */
147
148    if (data_line[len-1] != '\n') {
149      if (argc == 2) {
150	fprintf(stderr, "line %d in \"%s\" is too long", line_no, argv[1]);
151      } else {
152	fprintf(stderr, "line %d in \"stdin\" is too long", line_no);
153      }
154    } else {
155      data_line[len-1] = '\0';
156    }
157
158    p = (char *) &data_line;
159
160    k  = p;					/* save start of key */
161    while (!isspace(*p)) { p++; };		/* find first "space" */
162    while (isspace(*p)) { *p = '\0'; p++; };	/* replace space with <NUL> */
163
164    v = p;					/* save start of value */
165    while(*p != '\0') { p++; };			/* find end of string */
166
167    (void)inet_aton(k,&host_addr);
168    printf("%s %s\n",inet_ntoa(host_addr),v);
169
170  }
171
172  return(0);
173
174}
175