1 /* 2 * Copyright (c) 1997-2000 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 1.21 2000/01/28 03:19:32 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) 47 { 48 arg_printusage (args, 49 sizeof(args)/sizeof(*args), 50 NULL, 51 "[principal]"); 52 exit (ret); 53 } 54 55 int 56 main (int argc, char **argv) 57 { 58 krb5_error_code ret; 59 krb5_context context; 60 krb5_principal principal; 61 int optind = 0; 62 krb5_get_init_creds_opt opt; 63 krb5_creds cred; 64 int result_code; 65 krb5_data result_code_string, result_string; 66 char pwbuf[BUFSIZ]; 67 68 optind = krb5_program_setup(&context, argc, argv, 69 args, sizeof(args) / sizeof(args[0]), NULL); 70 71 if (help_flag) 72 usage (0); 73 74 if(version_flag){ 75 print_version (NULL); 76 exit(0); 77 } 78 79 krb5_get_init_creds_opt_init (&opt); 80 81 krb5_get_init_creds_opt_set_tkt_life (&opt, 300); 82 krb5_get_init_creds_opt_set_forwardable (&opt, FALSE); 83 krb5_get_init_creds_opt_set_proxiable (&opt, FALSE); 84 85 argc -= optind; 86 argv += optind; 87 88 if (argc > 1) 89 usage(1); 90 91 ret = krb5_init_context (&context); 92 if (ret) 93 errx (1, "krb5_init_context: %s", krb5_get_err_text(context, ret)); 94 95 if(argv[0]) { 96 ret = krb5_parse_name (context, argv[0], &principal); 97 if (ret) 98 krb5_err (context, 1, ret, "krb5_parse_name"); 99 } else 100 principal = NULL; 101 102 ret = krb5_get_init_creds_password (context, 103 &cred, 104 principal, 105 NULL, 106 krb5_prompter_posix, 107 NULL, 108 0, 109 "kadmin/changepw", 110 &opt); 111 switch (ret) { 112 case 0: 113 break; 114 case KRB5_LIBOS_PWDINTR : 115 return 1; 116 case KRB5KRB_AP_ERR_BAD_INTEGRITY : 117 case KRB5KRB_AP_ERR_MODIFIED : 118 krb5_errx(context, 1, "Password incorrect"); 119 break; 120 default: 121 krb5_err(context, 1, ret, "krb5_get_init_creds"); 122 } 123 124 krb5_data_zero (&result_code_string); 125 krb5_data_zero (&result_string); 126 127 if(des_read_pw_string (pwbuf, sizeof(pwbuf), "New password: ", 1) != 0) 128 return 1; 129 130 ret = krb5_change_password (context, &cred, pwbuf, 131 &result_code, 132 &result_code_string, 133 &result_string); 134 if (ret) 135 krb5_err (context, 1, ret, "krb5_change_password"); 136 137 printf ("Reply from server: %.*s\n", (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