Initial import from FreeBSD RELENG_4:
[dragonfly.git] / lib / libc / net / getservbyname.c
CommitLineData
984263bc
MD
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#if defined(LIBC_SCCS) && !defined(lint)
35static char sccsid[] = "@(#)getservbyname.c 8.1 (Berkeley) 6/4/93";
36#endif /* LIBC_SCCS and not lint */
37
38#include <netdb.h>
39#include <string.h>
40
41extern int _serv_stayopen;
42
43struct servent *
44getservbyname(name, proto)
45 const char *name, *proto;
46{
47 register struct servent *p;
48 register char **cp;
49
50#ifdef YP
51 extern char *___getservbyname_yp;
52 extern char *___getservbyproto_yp;
53
54 ___getservbyname_yp = (char *)name;
55 ___getservbyproto_yp = (char *)proto;
56#endif
57
58 setservent(_serv_stayopen);
59 while ( (p = getservent()) ) {
60 if (strcmp(name, p->s_name) == 0)
61 goto gotname;
62 for (cp = p->s_aliases; *cp; cp++)
63 if (strcmp(name, *cp) == 0)
64 goto gotname;
65 continue;
66gotname:
67 if (proto == 0 || strcmp(p->s_proto, proto) == 0)
68 break;
69 }
70 if (!_serv_stayopen)
71 endservent();
72
73#ifdef YP
74 ___getservbyname_yp = NULL;
75 ___getservbyproto_yp = NULL;
76#endif
77
78 return (p);
79}