1 /* 2 * Copyright (c) 1997-2001 Kungliga Tekniska H�gskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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 #include "kpasswd_locl.h" 35 RCSID("$Id: kpasswd.c,v 1.24 2001/09/27 01:29:40 assar Exp $"); 36 37 static int version_flag; 38 static int help_flag; 39 40 static struct getargs args[] = { 41 { "version", 0, arg_flag, &version_flag }, 42 { "help", 0, arg_flag, &help_flag } 43 }; 44 45 static void 46 usage (int ret, struct getargs *a, int num_args) 47 { 48 arg_printusage (a, num_args, NULL, "[principal]"); 49 exit (ret); 50 } 51 52 int 53 main (int argc, char **argv) 54 { 55 krb5_error_code ret; 56 krb5_context context; 57 krb5_principal principal; 58 int optind = 0; 59 krb5_get_init_creds_opt opt; 60 krb5_creds cred; 61 int result_code; 62 krb5_data result_code_string, result_string; 63 char pwbuf[BUFSIZ]; 64 65 optind = krb5_program_setup(&context, argc, argv, 66 args, sizeof(args) / sizeof(args[0]), usage); 67 68 if (help_flag) 69 usage (0, args, sizeof(args) / sizeof(args[0])); 70 71 if(version_flag){ 72 print_version (NULL); 73 exit(0); 74 } 75 76 krb5_get_init_creds_opt_init (&opt); 77 78 krb5_get_init_creds_opt_set_tkt_life (&opt, 300); 79 krb5_get_init_creds_opt_set_forwardable (&opt, FALSE); 80 krb5_get_init_creds_opt_set_proxiable (&opt, FALSE); 81 82 argc -= optind; 83 argv += optind; 84 85 if (argc > 1) 86 usage (1, args, sizeof(args) / sizeof(args[0])); 87 88 ret = krb5_init_context (&context); 89 if (ret) 90 errx (1, "krb5_init_context failed: %d", ret); 91 92 if(argv[0]) { 93 ret = krb5_parse_name (context, argv[0], &principal); 94 if (ret) 95 krb5_err (context, 1, ret, "krb5_parse_name"); 96 } else 97 principal = NULL; 98 99 ret = krb5_get_init_creds_password (context, 100 &cred, 101 principal, 102 NULL, 103 krb5_prompter_posix, 104 NULL, 105 0, 106 "kadmin/changepw", 107 &opt); 108 switch (ret) { 109 case 0: 110 break; 111 case KRB5_LIBOS_PWDINTR : 112 return 1; 113 case KRB5KRB_AP_ERR_BAD_INTEGRITY : 114 case KRB5KRB_AP_ERR_MODIFIED : 115 krb5_errx(context, 1, "Password incorrect"); 116 break; 117 default: 118 krb5_err(context, 1, ret, "krb5_get_init_creds"); 119 } 120 121 krb5_data_zero (&result_code_string); 122 krb5_data_zero (&result_string); 123 124 if(des_read_pw_string (pwbuf, sizeof(pwbuf), "New password: ", 1) != 0) 125 return 1; 126 127 ret = krb5_change_password (context, &cred, pwbuf, 128 &result_code, 129 &result_code_string, 130 &result_string); 131 if (ret) 132 krb5_err (context, 1, ret, "krb5_change_password"); 133 134 printf ("%s%s%.*s\n", krb5_passwd_result_to_string(context, 135 result_code), 136 result_string.length > 0 ? " : " : "", 137 (int)result_string.length, 138 (char *)result_string.data); 139 140 krb5_data_free (&result_code_string); 141 krb5_data_free (&result_string); 142 143 krb5_free_creds_contents (context, &cred); 144 krb5_free_context (context); 145 return result_code; 146 } 147