1 /* 2 * Copyright (c) 1980, 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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)getname.c 8.1 (Berkeley) 6/6/93 30 * $FreeBSD: src/usr.bin/mail/getname.c,v 1.1.1.1.14.3 2003/01/06 05:46:03 mikeh Exp $ 31 * $DragonFly: src/usr.bin/mail/getname.c,v 1.3 2003/10/04 20:36:48 hmp Exp $ 32 */ 33 34 #include "rcv.h" 35 #include <pwd.h> 36 #include "extern.h" 37 38 /* Getname / getuserid for those with hashed passwd data base). */ 39 40 /* 41 * Search the passwd file for a uid. Return name on success, NULL on failure. 42 */ 43 char * 44 getname(int uid) 45 { 46 struct passwd *pw; 47 48 if ((pw = getpwuid(uid)) == NULL) 49 return (NULL); 50 return (pw->pw_name); 51 } 52 53 /* 54 * Convert the passed name to a user id and return it. Return -1 55 * on error. 56 */ 57 int 58 getuserid(char *name) 59 { 60 struct passwd *pw; 61 62 if ((pw = getpwnam(name)) == NULL) 63 return (-1); 64 return (pw->pw_uid); 65 } 66