1 /* $NetBSD: getservbyname.c,v 1.6 1997/07/21 14:08:00 jtc 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 #include <sys/cdefs.h> 37 #if defined(LIBC_SCCS) && !defined(lint) 38 #if 0 39 static char sccsid[] = "@(#)getservbyname.c 8.1 (Berkeley) 6/4/93"; 40 #else 41 __RCSID("$NetBSD: getservbyname.c,v 1.6 1997/07/21 14:08:00 jtc Exp $"); 42 #endif 43 #endif /* LIBC_SCCS and not lint */ 44 45 #include "namespace.h" 46 #include <netdb.h> 47 #include <string.h> 48 49 #ifdef __weak_alias 50 __weak_alias(getservbyname,_getservbyname); 51 #endif 52 53 extern int _serv_stayopen; 54 55 struct servent * 56 getservbyname(name, proto) 57 const char *name, *proto; 58 { 59 register struct servent *p; 60 register char **cp; 61 62 setservent(_serv_stayopen); 63 while ((p = getservent()) != NULL) { 64 if (strcmp(name, p->s_name) == 0) 65 goto gotname; 66 for (cp = p->s_aliases; *cp; cp++) 67 if (strcmp(name, *cp) == 0) 68 goto gotname; 69 continue; 70 gotname: 71 if (proto == 0 || strcmp(p->s_proto, proto) == 0) 72 break; 73 } 74 if (!_serv_stayopen) 75 endservent(); 76 return (p); 77 } 78