passwd.c revision 1.12
1 /* $NetBSD: passwd.c,v 1.12 1997/10/19 12:30:00 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1993, 1994 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 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1988, 1993, 1994\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "from: @(#)passwd.c 8.3 (Berkeley) 4/2/94"; 45 #else 46 __RCSID("$NetBSD: passwd.c,v 1.12 1997/10/19 12:30:00 lukem Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 #include <err.h> 51 #include <stdio.h> 52 #include <string.h> 53 #include <unistd.h> 54 55 #include "extern.h" 56 57 void usage __P((void)); 58 59 /* 60 * Note on configuration: 61 * Generally one would not use both Kerberos and YP 62 * to maintain passwords. 63 * 64 */ 65 66 int use_kerberos; 67 int use_yp; 68 int yppwd; 69 int yflag; 70 71 extern char *__progname; /* from crt0.o */ 72 73 int main __P((int, char **)); 74 75 #ifdef YP 76 extern int _yp_check __P((char **)); /* buried deep inside libc */ 77 #endif 78 79 int 80 main(argc, argv) 81 int argc; 82 char **argv; 83 { 84 extern int optind; 85 int ch; 86 char *username; 87 #if defined(KERBEROS) || defined(KERBEROS5) 88 char *iflag = 0, *rflag = 0, *uflag = 0; 89 90 if (strcmp(__progname, "kpasswd") == 0) 91 use_kerberos = 1; 92 else 93 use_kerberos = krb_check(); 94 #endif 95 #ifdef YP 96 use_yp = _yp_check(NULL); 97 #endif 98 99 if (strcmp(__progname, "yppasswd") == 0) { 100 #ifdef YP 101 if (!use_yp) 102 errx(1, "YP not in use."); 103 use_kerberos = 0; 104 yppwd = 1; 105 #else 106 errx(1, "YP support not compiled in."); 107 #endif 108 } 109 110 111 while ((ch = getopt(argc, argv, "lkyi:r:u:")) != -1) 112 switch (ch) { 113 case 'l': /* change local password file */ 114 if (yppwd) 115 usage(); 116 use_kerberos = 0; 117 use_yp = 0; 118 break; 119 #ifdef KERBEROS 120 case 'i': 121 iflag = optarg; 122 break; 123 case 'r': 124 rflag = optarg; 125 break; 126 case 'u': 127 uflag = optarg; 128 break; 129 #endif 130 case 'k': /* change Kerberos password */ 131 #if defined(KERBEROS) || defined(KERBEROS5) 132 if (yppwd) 133 usage(); 134 use_kerberos = 1; 135 use_yp = 0; 136 break; 137 #else 138 errx(1, "Kerberos support not compiled in."); 139 #endif 140 case 'y': /* change YP password */ 141 #ifdef YP 142 if (yppwd) 143 usage(); 144 if (!use_yp) 145 errx(1, "YP not in use."); 146 use_kerberos = 0; 147 yflag = 1; 148 break; 149 #else 150 errx(1, "YP support not compiled in."); 151 #endif 152 default: 153 usage(); 154 } 155 156 argc -= optind; 157 argv += optind; 158 159 username = getlogin(); 160 if (username == NULL) 161 errx(1, "who are you ??"); 162 163 switch(argc) { 164 case 0: 165 break; 166 case 1: 167 #ifdef KERBEROS5 168 if (use_kerberos && strcmp(argv[0], username)) { 169 errx(1, "%s\n\t%s\n%s\n", 170 "to change another user's Kerberos password, do", 171 "\"kinit <user>; passwd; kdestroy\";", 172 "to change a user's local passwd, use\ 173 \"passwd -l <user>\""); 174 } 175 #endif 176 username = argv[0]; 177 break; 178 default: 179 usage(); 180 exit(1); 181 } 182 183 #if defined(KERBEROS) || defined(KERBEROS5) 184 if (use_kerberos) 185 exit(kadm_passwd(username, iflag, rflag, uflag)); 186 #else 187 #ifdef KERBEROS5 188 if (use_kerberos) 189 exit(krb_passwd()); 190 #endif 191 #endif 192 #ifdef YP 193 if (use_yp) 194 exit(yp_passwd(username)); 195 #endif 196 exit(local_passwd(username)); 197 } 198 199 void 200 usage() 201 { 202 203 if (yppwd) 204 fprintf(stderr, "usage: %s user\n", __progname); 205 else 206 fprintf(stderr, "usage: %s [-l] [-k] [-y] [-i instance] [-r realm] [-u fullname] user\n", __progname); 207 exit(1); 208 } 209
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