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authorderaadt <>1995-10-18 08:42:23 +0000
committerderaadt <>1995-10-18 08:42:23 +0000
commit0527d29da443886d92e9a418180c5b25a5f8d270 (patch)
tree86b3a64928451a669cefa27900e5884036b4e349 /src/lib/libc/net/getnetent.c
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initial import of NetBSD tree
Diffstat (limited to 'src/lib/libc/net/getnetent.c')
-rw-r--r--src/lib/libc/net/getnetent.c127
1 files changed, 127 insertions, 0 deletions
diff --git a/src/lib/libc/net/getnetent.c b/src/lib/libc/net/getnetent.c
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1/* $NetBSD: getnetent.c,v 1.4 1995/02/25 06:20:33 cgd Exp $ */
2
3/*
4 * Copyright (c) 1983, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by the University of
18 * California, Berkeley and its contributors.
19 * 4. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#if defined(LIBC_SCCS) && !defined(lint)
37#if 0
38static char sccsid[] = "@(#)getnetent.c 8.1 (Berkeley) 6/4/93";
39#else
40static char rcsid[] = "$NetBSD: getnetent.c,v 1.4 1995/02/25 06:20:33 cgd Exp $";
41#endif
42#endif /* LIBC_SCCS and not lint */
43
44#include <sys/types.h>
45#include <sys/socket.h>
46#include <netinet/in.h>
47#include <arpa/inet.h>
48#include <netdb.h>
49#include <stdio.h>
50#include <string.h>
51
52#define MAXALIASES 35
53
54static FILE *netf;
55static char line[BUFSIZ+1];
56static struct netent net;
57static char *net_aliases[MAXALIASES];
58int _net_stayopen;
59
60void
61setnetent(f)
62 int f;
63{
64 if (netf == NULL)
65 netf = fopen(_PATH_NETWORKS, "r" );
66 else
67 rewind(netf);
68 _net_stayopen |= f;
69}
70
71void
72endnetent()
73{
74 if (netf) {
75 fclose(netf);
76 netf = NULL;
77 }
78 _net_stayopen = 0;
79}
80
81struct netent *
82getnetent()
83{
84 char *p;
85 register char *cp, **q;
86
87 if (netf == NULL && (netf = fopen(_PATH_NETWORKS, "r" )) == NULL)
88 return (NULL);
89again:
90 p = fgets(line, BUFSIZ, netf);
91 if (p == NULL)
92 return (NULL);
93 if (*p == '#')
94 goto again;
95 cp = strpbrk(p, "#\n");
96 if (cp == NULL)
97 goto again;
98 *cp = '\0';
99 net.n_name = p;
100 cp = strpbrk(p, " \t");
101 if (cp == NULL)
102 goto again;
103 *cp++ = '\0';
104 while (*cp == ' ' || *cp == '\t')
105 cp++;
106 p = strpbrk(cp, " \t");
107 if (p != NULL)
108 *p++ = '\0';
109 net.n_net = inet_network(cp);
110 net.n_addrtype = AF_INET;
111 q = net.n_aliases = net_aliases;
112 if (p != NULL)
113 cp = p;
114 while (cp && *cp) {
115 if (*cp == ' ' || *cp == '\t') {
116 cp++;
117 continue;
118 }
119 if (q < &net_aliases[MAXALIASES - 1])
120 *q++ = cp;
121 cp = strpbrk(cp, " \t");
122 if (cp != NULL)
123 *cp++ = '\0';
124 }
125 *q = NULL;
126 return (&net);
127}