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 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 * 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