source: rtems/cpukit/libnetworking/libc/getnetbyht.c @ cb2f320

4.104.114.84.9
Last change on this file since cb2f320 was cb2f320, checked in by Joel Sherrill <joel.sherrill@…>, on Mar 5, 2004 at 6:02:41 PM

2004-03-05 Joel Sherrill <joel@…>

  • libblock/src/bdbuf.c, libblock/src/ramdisk.c, libcsupport/src/newlibc.c, libcsupport/src/sync.c, libmisc/cpuuse/cpuuse.c, libmisc/monitor/mon-symbols.c, libmisc/shell/cmds.c, libmisc/shell/shell.c, libnetworking/kern/kern_sysctl.c, libnetworking/lib/ftpfs.c, libnetworking/lib/tftpDriver.c, libnetworking/libc/gethostbydns.c, libnetworking/libc/gethostbyht.c, libnetworking/libc/gethostnamadr.c, libnetworking/libc/getnetbyht.c, libnetworking/libc/getnetnamadr.c, libnetworking/libc/inet_addr.c, libnetworking/libc/linkaddr.c, libnetworking/libc/map_v4v6.c, libnetworking/libc/ns_print.c, libnetworking/libc/ns_ttl.c, libnetworking/libc/nsap_addr.c, libnetworking/libc/rcmd.c, libnetworking/libc/res_debug.c, libnetworking/libc/res_mkupdate.c, libnetworking/libc/res_query.c, libnetworking/libc/res_send.c, libnetworking/libc/res_update.c, libnetworking/net/radix.c, libnetworking/rtems/mkrootfs.c, librpc/src/rpc/clnt_perror.c, librpc/src/rpc/svc.c, score/macros/rtems/score/chain.inl, score/src/objectidtoname.c: Too much was accidentally committed -- revert.
  • Property mode set to 100644
File size: 4.5 KB
Line 
1/*
2 * Copyright (c) 1983, 1993
3 *      The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *      This product includes software developed by the University of
16 *      California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34/* Portions Copyright (c) 1993 Carlos Leandro and Rui Salgueiro
35 *      Dep. Matematica Universidade de Coimbra, Portugal, Europe
36 *
37 * Permission to use, copy, modify, and distribute this software for any
38 * purpose with or without fee is hereby granted, provided that the above
39 * copyright notice and this permission notice appear in all copies.
40 *
41 * from getnetent.c     1.1 (Coimbra) 93/06/02
42 */
43
44#if defined(LIBC_SCCS) && !defined(lint)
45static char sccsid[] = "@(#)getnetent.c 8.1 (Berkeley) 6/4/93";
46static char orig_rcsid[] = "From: Id: getnetent.c,v 8.4 1997/06/01 20:34:37 vixie Exp";
47static chat rcsid[] = "$Id$";
48#endif /* LIBC_SCCS and not lint */
49
50#include <sys/types.h>
51#include <sys/socket.h>
52#include <netinet/in.h>
53#include <arpa/inet.h>
54#include <arpa/nameser.h>
55#include <netdb.h>
56#include <stdio.h>
57#include <string.h>
58
59#define MAXALIASES      35
60
61static FILE *netf;
62static char line[BUFSIZ+1];
63static struct netent net;
64static char *net_aliases[MAXALIASES];
65static int _net_stayopen;
66
67void
68_setnethtent(f)
69        int f;
70{
71
72        if (netf == NULL)
73                netf = fopen(_PATH_NETWORKS, "r" );
74        else
75                rewind(netf);
76        _net_stayopen |= f;
77}
78
79void
80_endnethtent()
81{
82
83        if (netf) {
84                fclose(netf);
85                netf = NULL;
86        }
87        _net_stayopen = 0;
88}
89
90struct netent *
91getnetent()
92{
93        char *p;
94        register char *cp, **q;
95
96        if (netf == NULL && (netf = fopen(_PATH_NETWORKS, "r" )) == NULL)
97                return (NULL);
98again:
99        p = fgets(line, sizeof line, netf);
100        if (p == NULL)
101                return (NULL);
102        if (*p == '#')
103                goto again;
104        cp = strpbrk(p, "#\n");
105        if (cp == NULL)
106                goto again;
107        *cp = '\0';
108        net.n_name = p;
109        cp = strpbrk(p, " \t");
110        if (cp == NULL)
111                goto again;
112        *cp++ = '\0';
113        while (*cp == ' ' || *cp == '\t')
114                cp++;
115        p = strpbrk(cp, " \t");
116        if (p != NULL)
117                *p++ = '\0';
118        net.n_net = inet_network(cp);
119        net.n_addrtype = AF_INET;
120        q = net.n_aliases = net_aliases;
121        if (p != NULL) 
122                cp = p;
123        while (cp && *cp) {
124                if (*cp == ' ' || *cp == '\t') {
125                        cp++;
126                        continue;
127                }
128                if (q < &net_aliases[MAXALIASES - 1])
129                        *q++ = cp;
130                cp = strpbrk(cp, " \t");
131                if (cp != NULL)
132                        *cp++ = '\0';
133        }
134        *q = NULL;
135        return (&net);
136}
137
138struct netent *
139_getnetbyhtname(name)
140        register const char *name;
141{
142        register struct netent *p;
143        register char **cp;
144
145        setnetent(_net_stayopen);
146        while ( (p = getnetent()) ) {
147                if (strcasecmp(p->n_name, name) == 0)
148                        break;
149                for (cp = p->n_aliases; *cp != 0; cp++)
150                        if (strcasecmp(*cp, name) == 0)
151                                goto found;
152        }
153found:
154        if (!_net_stayopen)
155                endnetent();
156        return (p);
157}
158
159struct netent *
160_getnetbyhtaddr(net, type)
161        register unsigned long net;
162        register int type;
163{
164        register struct netent *p;
165
166        setnetent(_net_stayopen);
167        while ( (p = getnetent()) )
168                if (p->n_addrtype == type && p->n_net == net)
169                        break;
170        if (!_net_stayopen)
171                endnetent();
172        return (p);
173}
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