1 /* $OpenBSD: passwd.c,v 1.27 2015/11/26 19:01:47 deraadt Exp $ */ 2 3 /* 4 * Copyright (c) 1988 The Regents of the University of California. 5 * 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <stdio.h> 33 #include <stdlib.h> 34 #include <string.h> 35 #include <unistd.h> 36 #include <err.h> 37 38 extern int local_passwd(char *, int); 39 void usage(int retval); 40 41 int 42 main(int argc, char **argv) 43 { 44 extern int optind; 45 char *username; 46 int ch; 47 48 /* Process args and options */ 49 while ((ch = getopt(argc, argv, "")) != -1) 50 switch (ch) { 51 default: 52 usage(1); 53 } 54 55 argc -= optind; 56 argv += optind; 57 58 username = getlogin(); 59 if (username == NULL) { 60 fprintf(stderr, "passwd: who are you ??\n"); 61 exit(1); 62 } 63 64 switch (argc) { 65 case 0: 66 break; 67 case 1: 68 username = argv[0]; 69 break; 70 default: 71 usage(1); 72 } 73 74 exit(local_passwd(username, 0)); 75 } 76 77 void 78 usage(int retval) 79 { 80 fprintf(stderr, "usage: passwd [user]\n"); 81 exit(retval); 82 } 83