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 * $id$ 34 * 35 */ 36 37 #ifndef lint 38 static const char copyright[] = 39 "@(#) Copyright (c) 1988, 1993, 1994\n\ 40 The Regents of the University of California. All rights reserved.\n"; 41 #endif /* not lint */ 42 43 #ifndef lint 44 static const char sccsid[] = "From: @(#)passwd.c 8.3 (Berkeley) 4/2/94"; 45 static const char rcsid[] = 46 "$Id$"; 47 #endif /* not lint */ 48 49 #include <err.h> 50 #include <errno.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <unistd.h> 54 #include <string.h> 55 56 #ifdef YP 57 #include <pwd.h> 58 #include <pw_yp.h> 59 char *prog_name; 60 int __use_yp = 0; 61 int yp_passwd(char *user); 62 #endif 63 64 #ifdef KERBEROS 65 #include "krb.h" 66 #endif 67 68 #include "extern.h" 69 70 void usage __P((void)); 71 72 int use_local_passwd = 0; 73 74 int 75 main(argc, argv) 76 int argc; 77 char **argv; 78 { 79 int ch; 80 char *uname; 81 char *iflag = 0, *rflag = 0, *uflag = 0; 82 83 #ifdef YP 84 #ifdef KERBEROS 85 char realm[REALM_SZ]; 86 #define OPTIONS "lysfi:r:u:" 87 #else 88 #define OPTIONS "lysf" 89 #endif 90 #else 91 #ifdef KERBEROS 92 char realm[REALM_SZ]; 93 #define OPTIONS "li:r:u:" 94 #else 95 #define OPTIONS "l" 96 #endif 97 #endif 98 99 #ifdef YP 100 int res = 0; 101 102 if (strstr(argv[0], (prog_name = "yppasswd"))) __use_yp = 1; 103 #endif 104 105 while ((ch = getopt(argc, argv, OPTIONS)) != EOF) { 106 switch (ch) { 107 case 'l': /* change local password file */ 108 use_local_passwd = 1; 109 break; 110 #ifdef KERBEROS 111 case 'i': 112 iflag = optarg; 113 break; 114 case 'r': 115 rflag = optarg; 116 break; 117 case 'u': 118 uflag = optarg; 119 break; 120 #endif /* KERBEROS */ 121 #ifdef YP 122 case 'y': /* Change NIS password */ 123 __use_yp = 1; 124 break; 125 #endif 126 default: 127 case '?': 128 usage(); 129 } 130 } 131 132 argc -= optind; 133 argv += optind; 134 135 if ((uname = getlogin()) == NULL) 136 err(1, "getlogin"); 137 138 switch(argc) { 139 case 0: 140 break; 141 case 1: 142 uname = argv[0]; 143 break; 144 default: 145 usage(); 146 } 147 148 #ifdef YP 149 /* 150 * If NIS is turned on in the password database, use it, else punt. 151 */ 152 #ifdef KERBEROS 153 if (__use_yp || (iflag == NULL && rflag == NULL && uflag == NULL)) { 154 #endif 155 res = use_yp(uname); 156 if (res == USER_YP_ONLY) { 157 if (!use_local_passwd) { 158 exit(yp_passwd(uname)); 159 } else { 160 /* 161 * Reject -l flag if NIS is turned on and the user 162 * doesn't exist in the local password database. 163 */ 164 errx(1, "unknown local user: %s.", uname); 165 } 166 } else if (res == USER_LOCAL_ONLY) { 167 /* 168 * Reject -y flag if user only exists locally. 169 */ 170 if (__use_yp) 171 errx(1, "unknown NIS user: %s.", uname); 172 } else if (res == USER_YP_AND_LOCAL) { 173 if (!use_local_passwd) 174 exit(yp_passwd(uname)); 175 } 176 #ifdef KERBEROS 177 } 178 #endif 179 #endif 180 181 if (!use_local_passwd) { 182 #ifdef KERBEROS 183 if(krb_get_lrealm(realm, 0) == KSUCCESS) { 184 fprintf(stderr, "realm %s\n", realm); 185 exit(krb_passwd(argv[0], iflag, rflag, uflag)); 186 } 187 #endif 188 } 189 exit(local_passwd(uname)); 190 } 191 192 void 193 usage() 194 { 195 196 #ifdef YP 197 #ifdef KERBEROS 198 fprintf(stderr, 199 "usage: passwd [-l] [-i instance] [-r realm] [-u fullname]\n"); 200 fprintf(stderr, 201 " [-l] [-y] [user]\n"); 202 #else 203 (void)fprintf(stderr, "usage: passwd [-l] [-y] [user] \n"); 204 #endif 205 #else 206 #ifdef KERBEROS 207 fprintf(stderr, 208 "usage: passwd [-l] [-i instance] [-r realm] [-u fullname] [user]\n"); 209 #else 210 (void)fprintf(stderr, "usage: passwd user\n"); 211 #endif 212 #endif 213 exit(1); 214 } 215