passwd.c revision 1.15
1 /* $NetBSD: passwd.c,v 1.15 2000/01/26 01:18:48 aidan 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 1.15 2000/01/26 01:18:48 aidan 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 int use_kerberos; 66 int use_yp; 67 int yppwd; 68 int yflag; 69 70 extern char *__progname; /* from crt0.o */ 71 72 int main __P((int, char **)); 73 74 #ifdef YP 75 extern int _yp_check __P((char **)); /* buried deep inside libc */ 76 #endif 77 78 int 79 main(argc, argv) 80 int argc; 81 char **argv; 82 { 83 extern int optind; 84 int ch; 85 char *username; 86 #if defined(KERBEROS) 87 char *iflag = 0, *rflag = 0; 88 #endif 89 #if defined(KERBEROS) || defined(KERBEROS5) 90 char *uflag = 0; 91 #endif 92 93 #if defined(KERBEROS) || defined(KERBEROS5) 94 if (strcmp(__progname, "kpasswd") == 0) 95 use_kerberos = 1; 96 else 97 use_kerberos = krb_check(); 98 #endif 99 #ifdef YP 100 use_yp = _yp_check(NULL); 101 #endif 102 103 if (strcmp(__progname, "yppasswd") == 0) { 104 #ifdef YP 105 if (!use_yp) 106 errx(1, "YP not in use."); 107 use_kerberos = 0; 108 yppwd = 1; 109 #else 110 errx(1, "YP support not compiled in."); 111 #endif 112 } 113 114 while ((ch = getopt(argc, argv, "lkyi:r:u:")) != -1) 115 switch (ch) { 116 case 'l': /* change local password file */ 117 if (yppwd) 118 usage(); 119 use_kerberos = 0; 120 use_yp = 0; 121 break; 122 #ifdef KERBEROS 123 case 'i': 124 iflag = optarg; 125 break; 126 case 'r': 127 rflag = optarg; 128 break; 129 #endif 130 #if defined(KERBEROS) || defined(KERBEROS5) 131 case 'u': 132 uflag = optarg; 133 break; 134 #endif 135 case 'k': /* change Kerberos password */ 136 #if defined(KERBEROS) || defined(KERBEROS5) 137 if (yppwd) 138 usage(); 139 use_kerberos = 1; 140 use_yp = 0; 141 break; 142 #endif 143 #ifndef KERBEROS 144 case 'i': 145 case 'r': 146 errx(1, "Kerberos4 support not compiled in."); 147 #endif 148 #if !defined(KERBEROS) && !defined(KERBEROS5) 149 case 'u': 150 errx(1, "Kerberos support not compiled in."); 151 #endif 152 case 'y': /* change YP password */ 153 #ifdef YP 154 if (yppwd) 155 usage(); 156 if (!use_yp) 157 errx(1, "YP not in use."); 158 use_kerberos = 0; 159 yflag = 1; 160 break; 161 #else 162 errx(1, "YP support not compiled in."); 163 #endif 164 default: 165 usage(); 166 } 167 168 argc -= optind; 169 argv += optind; 170 171 username = getlogin(); 172 if (username == NULL) 173 errx(1, "who are you ??"); 174 175 switch(argc) { 176 case 0: 177 break; 178 case 1: 179 #ifdef KERBEROS5 180 if (use_kerberos && strcmp(argv[0], username)) { 181 errx(1, "%s\n\t%s\n%s\n", 182 "to change another user's Kerberos password, do", 183 "\"kinit <user>; passwd; kdestroy\";", 184 "to change a user's local passwd, use\ 185 \"passwd -l <user>\""); 186 } 187 #endif 188 username = argv[0]; 189 break; 190 default: 191 usage(); 192 exit(1); 193 } 194 195 #if defined(KERBEROS5) 196 if (use_kerberos) 197 exit(kadm5_passwd(username)); 198 #elif defined(KERBEROS) 199 if (uflag && (iflag || rflag)) 200 errx(1, "-u cannot be used with -r or -i"); 201 202 if (use_kerberos) 203 exit(kadm_passwd(username, iflag, rflag, uflag)); 204 #endif 205 #ifdef YP 206 if (use_yp) 207 exit(yp_passwd(username)); 208 #endif 209 exit(local_passwd(username)); 210 } 211 212 void 213 usage() 214 { 215 216 if (yppwd) 217 fprintf(stderr, "usage: %s user\n", __progname); 218 else 219 fprintf(stderr, "usage: %s [-l] [-k] [-y] [-i instance] [-r realm] [-u fullname] user\n", __progname); 220 exit(1); 221 } 222
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