1/* 2 * Copyright (c) 1988, 1993, 1994 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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34#ifndef lint 35static const char copyright[] = 36"@(#) Copyright (c) 1988, 1993, 1994\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38#endif /* not lint */ 39 40#ifndef lint 41#if 0 42static char sccsid[] = "@(#)passwd.c 8.3 (Berkeley) 4/2/94"; 43#endif 44static const char rcsid[] = 45 "$FreeBSD$"; 46#endif /* not lint */ 47 48#include <sys/types.h> 49 50#include <err.h> 51#include <errno.h> 52#include <libutil.h> 53#include <stdio.h> 54#include <stdlib.h> 55#include <string.h> 56#include <unistd.h> 57 58#ifdef YP 59#include <pwd.h> 60#include <pw_yp.h> 61#include <rpcsvc/yp.h> 62int __use_yp = 0; 63int yp_errno = YP_TRUE; 64extern int yp_passwd( char * ); 65#endif 66 67#include "extern.h" 68 69static void usage(void); 70 71int use_local_passwd = 0; 72 73int 74main(argc, argv) 75 int argc; 76 char **argv; 77{ 78 int ch; 79 char *uname; 80 81#ifdef YP 82#define OPTIONS "d:h:lysfo" 83#else 84#define OPTIONS "l" 85#endif 86 87#ifdef YP 88 int res = 0; 89 90 if (strstr(argv[0], "yppasswd")) __use_yp = 1; 91#endif 92 93 while ((ch = getopt(argc, argv, OPTIONS)) != -1) { 94 switch (ch) { 95 case 'l': /* change local password file */ 96 use_local_passwd = 1; 97 break; 98#ifdef YP 99 case 'y': /* Change NIS password */ 100 __use_yp = 1; 101 break; 102 case 'd': /* Specify NIS domain. */ 103#ifdef PARANOID 104 if (!getuid()) { 105#endif 106 yp_domain = optarg; 107 if (yp_server == NULL) 108 yp_server = "localhost"; 109#ifdef PARANOID 110 } else { 111 warnx("only the super-user may use the -d flag"); 112 } 113#endif 114 break; 115 case 'h': /* Specify NIS server. */ 116#ifdef PARANOID 117 if (!getuid()) { 118#endif 119 yp_server = optarg; 120#ifdef PARANOID 121 } else { 122 warnx("only the super-user may use the -h flag"); 123 } 124#endif 125 break; 126 case 'o': 127 force_old++; 128 break; 129#endif 130 default: 131 case '?': 132 usage(); 133 } 134 } 135 136 argc -= optind; 137 argv += optind; 138 139 if ((uname = getlogin()) == NULL) 140 err(1, "getlogin"); 141 142 switch(argc) { 143 case 0: 144 break; 145 case 1: 146 uname = argv[0]; 147 break; 148 default: 149 usage(); 150 } 151 152#ifdef YP 153 /* 154 * If NIS is turned on in the password database, use it, else punt. 155 */ 156 res = use_yp(uname, 0, 0); 157 if (res == USER_YP_ONLY) { 158 if (!use_local_passwd) { 159 exit(yp_passwd(uname)); 160 } else { 161 /* 162 * Reject -l flag if NIS is turned on and the user 163 * doesn't exist in the local password database. 164 */ 165 errx(1, "unknown local user: %s", uname); 166 } 167 } else if (res == USER_LOCAL_ONLY) { 168 /* 169 * Reject -y flag if user only exists locally. 170 */ 171 if (__use_yp) 172 errx(1, "unknown NIS user: %s", uname); 173 } else if (res == USER_YP_AND_LOCAL) { 174 if (!use_local_passwd && (yp_in_pw_file || __use_yp)) 175 exit(yp_passwd(uname)); 176 } 177#endif 178 179 exit(local_passwd(uname)); 180} 181 182static void 183usage() 184{ 185 186#ifdef YP 187 (void)fprintf(stderr, 188 "usage: passwd [-l] [-y] [-o] [-d domain [-h host]] [user]\n"); 189#else 190 (void)fprintf(stderr, "usage: passwd [-l] user\n"); 191#endif 192 exit(1); 193} 194