1 /* 2 * Copyright (c) 1997-1999 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 1.20 1999/12/02 17:05:00 joda 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 83 argc -= optind; 84 argv += optind; 85 86 if (argc > 1) 87 usage(1); 88 89 ret = krb5_init_context (&context); 90 if (ret) 91 errx (1, "krb5_init_context: %s", krb5_get_err_text(context, ret)); 92 93 if(argv[0]) { 94 ret = krb5_parse_name (context, argv[0], &principal); 95 if (ret) 96 krb5_err (context, 1, ret, "krb5_parse_name"); 97 } else 98 principal = NULL; 99 100 ret = krb5_get_init_creds_password (context, 101 &cred, 102 principal, 103 NULL, 104 krb5_prompter_posix, 105 NULL, 106 0, 107 "kadmin/changepw", 108 &opt); 109 switch (ret) { 110 case 0: 111 break; 112 case KRB5_LIBOS_PWDINTR : 113 return 1; 114 case KRB5KRB_AP_ERR_BAD_INTEGRITY : 115 case KRB5KRB_AP_ERR_MODIFIED : 116 krb5_errx(context, 1, "Password incorrect"); 117 break; 118 default: 119 krb5_err(context, 1, ret, "krb5_get_init_creds"); 120 } 121 122 krb5_data_zero (&result_code_string); 123 krb5_data_zero (&result_string); 124 125 if(des_read_pw_string (pwbuf, sizeof(pwbuf), "New password: ", 1) != 0) 126 return 1; 127 128 ret = krb5_change_password (context, &cred, pwbuf, 129 &result_code, 130 &result_code_string, 131 &result_string); 132 if (ret) 133 krb5_err (context, 1, ret, "krb5_change_password"); 134 135 printf ("Reply from server: %.*s\n", (int)result_string.length, 136 (char *)result_string.data); 137 138 krb5_data_free (&result_code_string); 139 krb5_data_free (&result_string); 140 141 krb5_free_creds_contents (context, &cred); 142 krb5_free_context (context); 143 return result_code; 144 } 145