1 /* 2 * Copyright (c) 1988 The Regents of the University of California. 3 * 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 35 char copyright[] = 36 "@(#) Copyright (c) 1988 The Regents of the University of California.\n\ 37 All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 static char sccsid[] = "@(#)passwd.c 5.5 (Berkeley) 7/6/91"; 42 #endif /* not lint */ 43 44 #include <stdio.h> 45 #include <unistd.h> 46 47 /* 48 * Note on configuration: 49 * Generally one would not use both Kerberos and YP 50 * to maintain passwords. 51 * 52 */ 53 #ifdef KERBEROS 54 int use_kerberos = 1; 55 #else 56 int use_kerberos = 0; 57 #endif 58 #ifdef YP 59 int force_yp = 0; 60 int use_yp; 61 #else 62 int use_yp = 0; 63 #endif 64 65 main(argc, argv) 66 int argc; 67 char **argv; 68 { 69 extern int optind; 70 register int ch; 71 char *uname; 72 int status; 73 74 #ifdef YP 75 use_yp = _yp_check(NULL); 76 #endif 77 78 while ((ch = getopt(argc, argv, "lky")) != EOF) 79 switch (ch) { 80 case 'l': /* change local password file */ 81 use_kerberos = 0; 82 use_yp = 0; 83 break; 84 case 'k': /* change Kerberos password */ 85 #ifdef KERBEROS 86 use_kerberos = 1; 87 use_yp = 0; 88 break; 89 #else 90 usage(); 91 exit(1); 92 #endif 93 case 'y': /* change YP password */ 94 #ifdef YP 95 if (!use_yp) { 96 fprintf(stderr, "passwd: YP not in use.\n"); 97 usage(); 98 exit(1); 99 } 100 101 /* XXX Maybe just exec yppasswd ?? */ 102 use_kerberos = 0; 103 use_yp = 1; 104 force_yp = 1; 105 break; 106 #else 107 usage(); 108 exit(1); 109 #endif 110 default: 111 case '?': 112 usage(); 113 exit(1); 114 } 115 116 argc -= optind; 117 argv += optind; 118 119 uname = getlogin(); 120 if (uname == NULL) { 121 fprintf(stderr, "passwd: who are you ??\n"); 122 exit(1); 123 } 124 125 switch(argc) { 126 case 0: 127 break; 128 case 1: 129 #ifdef KERBEROS 130 if (use_kerberos && strcmp(argv[1], uname)) { 131 (void)fprintf(stderr, "passwd: %s\n\t%s\n%s\n", 132 "to change another user's Kerberos password, do", 133 "\"kinit user; passwd; kdestroy\";", 134 "to change a user's local passwd, use \"passwd -l user\""); 135 exit(1); 136 } 137 #endif 138 uname = argv[0]; 139 break; 140 default: 141 usage(); 142 exit(1); 143 } 144 145 #ifdef KERBEROS 146 if (use_kerberos) 147 exit(krb_passwd()); 148 #endif 149 #ifdef YP 150 if (force_yp || ((status = local_passwd(uname)) && use_yp)) 151 exit(yp_passwd(uname)); 152 exit(status); 153 #endif 154 exit(local_passwd(uname)); 155 } 156 157 usage() 158 { 159 #if defined(KERBEROS) && defined(YP) 160 (void)fprintf(stderr, "usage: passwd [-l] [-k] [-y] user\n"); 161 #else /* !(KERBEROS && YP) */ 162 #if defined(KERBEROS) || defined(YP) 163 (void)fprintf(stderr, "usage: passwd [-l] user\n"); 164 #else 165 (void)fprintf(stderr, "usage: passwd user\n"); 166 #endif 167 #endif /* KERBEROS && YP */ 168 } 169