1 /* $OpenBSD: getservbyname.c,v 1.11 2015/09/14 07:38:38 guenther Exp $ */
2 /*
3 * Copyright (c) 1983, 1993
4 * The Regents of the University of California. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the University nor the names of its contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31 #include <netdb.h>
32 #include <stdio.h>
33 #include <string.h>
34
35 int
getservbyname_r(const char * name,const char * proto,struct servent * se,struct servent_data * sd)36 getservbyname_r(const char *name, const char *proto, struct servent *se,
37 struct servent_data *sd)
38 {
39 char **cp;
40 int error;
41
42 setservent_r(sd->stayopen, sd);
43 while ((error = getservent_r(se, sd)) == 0) {
44 if (strcmp(name, se->s_name) == 0)
45 goto gotname;
46 for (cp = se->s_aliases; *cp; cp++)
47 if (strcmp(name, *cp) == 0)
48 goto gotname;
49 continue;
50 gotname:
51 if (proto == 0 || strcmp(se->s_proto, proto) == 0)
52 break;
53 }
54 if (!sd->stayopen && sd->fp != NULL) {
55 fclose(sd->fp);
56 sd->fp = NULL;
57 }
58 return (error);
59 }
60 DEF_WEAK(getservbyname_r);
61
62 struct servent *
getservbyname(const char * name,const char * proto)63 getservbyname(const char *name, const char *proto)
64 {
65 extern struct servent_data _servent_data;
66 static struct servent serv;
67
68 if (getservbyname_r(name, proto, &serv, &_servent_data) != 0)
69 return (NULL);
70 return (&serv);
71 }
72 DEF_WEAK(getservbyname);
73