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 35 static 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 static char sccsid[] = "From: @(#)passwd.c 8.3 (Berkeley) 4/2/94"; 42 static const char rcsid[] = 43 "$Id: passwd.c,v 1.2 1995/01/20 22:03:36 wollman Exp $"; 44 #endif /* not lint */ 45 46 #include <err.h> 47 #include <errno.h> 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <unistd.h> 51 52 #ifdef YP 53 #include <pwd.h> 54 #include <limits.h> 55 #include <db.h> 56 #include <fcntl.h> 57 #include <utmp.h> 58 #include <sys/types.h> 59 #include <sys/stat.h> 60 #include <sys/param.h> 61 #endif 62 63 #ifdef KERBEROS 64 #include "krb.h" 65 #endif 66 67 #include "extern.h" 68 69 void usage __P((void)); 70 71 int use_local_passwd = 0; 72 73 #ifdef YP 74 #define PERM_SECURE (S_IRUSR|S_IWUSR) 75 int use_yp_passwd = 0, opt_shell = 0, opt_fullname = 0; 76 char *prog_name; 77 HASHINFO openinfo = { 78 4096, /* bsize */ 79 32, /* ffactor */ 80 256, /* nelem */ 81 2048 * 1024, /* cachesize */ 82 NULL, /* hash */ 83 0, /* lorder */ 84 }; 85 #endif 86 87 int 88 main(argc, argv) 89 int argc; 90 char **argv; 91 { 92 int ch; 93 char *uname; 94 char *iflag = 0, *rflag = 0, *uflag = 0; 95 96 #ifdef YP 97 #ifdef KERBEROS 98 char realm[REALM_SZ]; 99 #define OPTIONS "lysfi:r:u:" 100 #else 101 #define OPTIONS "lysf" 102 #endif 103 #else 104 #ifdef KERBEROS 105 char realm[REALM_SZ]; 106 #define OPTIONS "li:r:u:" 107 #else 108 #define OPTIONS "l" 109 #endif 110 #endif 111 112 #ifdef YP 113 DB *dbp; 114 DBT key,data; 115 char bf[UT_NAMESIZE + 2]; 116 117 if (strstr(argv[0], (prog_name = "ypchpass"))) 118 use_yp_passwd = opt_shell = opt_fullname = 1; 119 if (strstr(argv[0], (prog_name = "ypchsh"))) opt_shell = 1; 120 if (strstr(argv[0], (prog_name = "ypchfn"))) opt_fullname = 1; 121 if (strstr(argv[0], (prog_name = "yppasswd"))) use_yp_passwd = 1; 122 #endif 123 124 while ((ch = getopt(argc, argv, OPTIONS)) != EOF) { 125 switch (ch) { 126 case 'l': /* change local password file */ 127 use_local_passwd = 1; 128 break; 129 #ifdef KERBEROS 130 case 'i': 131 iflag = optarg; 132 break; 133 case 'r': 134 rflag = optarg; 135 break; 136 case 'u': 137 uflag = optarg; 138 break; 139 #endif /* KERBEROS */ 140 #ifdef YP 141 case 'y': /* Change NIS password */ 142 use_yp_passwd = 1; 143 break; 144 case 's': /* Change NIS shell field */ 145 opt_shell = 1; 146 break; 147 case 'f': /* Change NIS GECOS field */ 148 opt_fullname = 1; 149 break; 150 #endif 151 default: 152 case '?': 153 usage(); 154 } 155 } 156 157 argc -= optind; 158 argv += optind; 159 160 if ((uname = getlogin()) == NULL) 161 err(1, "getlogin"); 162 163 switch(argc) { 164 case 0: 165 break; 166 case 1: 167 uname = argv[0]; 168 break; 169 default: 170 usage(); 171 } 172 173 #ifdef YP 174 /* 175 * If the user isn't in the local database file, he must 176 * be in the NIS database. 177 */ 178 #ifdef KERBEROS 179 if (!use_yp_passwd && !opt_shell && !opt_fullname && 180 iflag == NULL && rflag == NULL && uflag == NULL) { 181 #else 182 if (!use_yp_passwd && !opt_shell && !opt_fullname) { 183 #endif 184 if ((dbp = dbopen(_PATH_MP_DB, O_RDONLY, PERM_SECURE, 185 DB_HASH, &openinfo)) == NULL) 186 errx(1, "error opening database: %s.", _PATH_MP_DB); 187 188 bf[0] = _PW_KEYBYNAME; 189 bcopy(uname, bf + 1, MIN(strlen(uname), UT_NAMESIZE)); 190 key.data = (u_char *)bf; 191 key.size = strlen(uname) + 1; 192 if ((dbp->get)(dbp,&key,&data,0)) 193 use_yp_passwd = 1; 194 (dbp->close)(dbp); 195 } 196 197 if (!use_local_passwd && (use_yp_passwd || opt_shell || opt_fullname)) 198 exit(yp_passwd(uname)); 199 #endif 200 201 if (!use_local_passwd) { 202 #ifdef KERBEROS 203 if(krb_get_lrealm(realm, 0) == KSUCCESS) { 204 fprintf(stderr, "realm %s\n", realm); 205 exit(krb_passwd(argv[0], iflag, rflag, uflag)); 206 } 207 #endif 208 } 209 #ifdef YP 210 if (use_local_passwd && use_yp_passwd) 211 errx(1,"unknown local user: %s.",uname); 212 #endif 213 exit(local_passwd(uname)); 214 } 215 216 void 217 usage() 218 { 219 220 #ifdef YP 221 #ifdef KERBEROS 222 fprintf(stderr, 223 "usage: passwd [-l] [-i instance] [-r realm] [-u fullname]\n"); 224 fprintf(stderr, 225 " [-l] [-y] [-f] [-s] [user]\n"); 226 #else 227 (void)fprintf(stderr, "usage: passwd [-y] [-f] [-s] [user] \n"); 228 #endif 229 #else 230 #ifdef KERBEROS 231 fprintf(stderr, 232 "usage: passwd [-l] [-i instance] [-r realm] [-u fullname] [user]\n"); 233 #else 234 (void)fprintf(stderr, "usage: passwd user\n"); 235 #endif 236 #endif 237 exit(1); 238 } 239