1 /* 2 * Copyright (c) 2005 Kungliga Tekniska Högskolan 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 KTH nor the names of its contributors may be 18 * used to endorse or promote products derived from this software without 19 * specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY KTH AND ITS CONTRIBUTORS ``AS IS'' AND ANY 22 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KTH OR ITS CONTRIBUTORS BE 25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 28 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ 32 33 #include "krb5_locl.h" 34 #include <getarg.h> 35 #include <err.h> 36 37 static int version_flag = 0; 38 static int help_flag = 0; 39 40 static struct getargs args[] = { 41 {"version", 0, arg_flag, &version_flag, 42 "print version", NULL }, 43 {"help", 0, arg_flag, &help_flag, 44 NULL, NULL } 45 }; 46 47 static void 48 usage (int ret) 49 { 50 arg_printusage (args, 51 sizeof(args)/sizeof(*args), 52 NULL, 53 "principal luser"); 54 exit (ret); 55 } 56 57 int 58 main(int argc, char **argv) 59 { 60 krb5_context context; 61 krb5_error_code ret; 62 krb5_principal principal; 63 char *p; 64 int o = 0; 65 66 setprogname(argv[0]); 67 68 if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &o)) 69 usage(1); 70 71 if (help_flag) 72 usage (0); 73 74 if(version_flag){ 75 print_version(NULL); 76 exit(0); 77 } 78 79 argc -= o; 80 argv += o; 81 82 ret = krb5_init_context(&context); 83 if (ret) 84 errx (1, "krb5_init_context failed: %d", ret); 85 86 if (argc != 2) 87 usage(1); 88 89 ret = krb5_parse_name(context, argv[0], &principal); 90 if (ret) 91 krb5_err(context, 1, ret, "krb5_parse_name"); 92 93 ret = krb5_unparse_name(context, principal, &p); 94 if (ret) 95 krb5_err(context, 1, ret, "krb5_unparse_name"); 96 97 ret = krb5_kuserok(context, principal, argv[1]); 98 99 krb5_free_context(context); 100 101 printf("%s is %sallowed to login as %s\n", p, ret ? "" : "NOT ", argv[1]); 102 103 return 0; 104 } 105