kuser/kdestroy.c

   1 /*
   2  * Copyright (c) 1997 - 2000, 2003 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 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 "kuser_locl.h"
  35 RCSID("$Id$");
  36
  37 static const char *cache;
  38 static const char *credential;
  39 static int help_flag;
  40 static int version_flag;
  41 static int unlog_flag = 1;
  42 static int dest_tkt_flag = 1;
  43
  44 struct getargs args[] = {
  45     { "credential",     0,   arg_string, &credential,
  46       "remove one credential", "principal" },
  47     { "cache",          'c', arg_string, &cache, "cache to destroy", "cache" },
  48     { "unlog",          0,   arg_negative_flag, &unlog_flag,
  49       "do not destroy tokens", NULL },
  50     { "delete-v4",      0,   arg_negative_flag, &dest_tkt_flag,
  51       "do not destroy v4 tickets", NULL },
  52     { "version",        0,   arg_flag, &version_flag, NULL, NULL },
  53     { "help",           'h', arg_flag, &help_flag, NULL, NULL}
  54 };
  55
  56 int num_args = sizeof(args) / sizeof(args[0]);
  57
  58 static void
  59 usage (int status)
  60 {
  61     arg_printusage (args, num_args, NULL, "");
  62     exit (status);
  63 }
  64
  65 int
  66 main (int argc, char **argv)
  67 {
  68     krb5_error_code ret;
  69     krb5_context context;
  70     krb5_ccache  ccache;
  71     int optidx = 0;
  72     int exit_val = 0;
  73
  74     setprogname (argv[0]);
  75
  76     if(getarg(args, num_args, argc, argv, &optidx))
  77         usage(1);
  78
  79     if (help_flag)
  80         usage (0);
  81
  82     if(version_flag){
  83         print_version(NULL);
  84         exit(0);
  85     }
  86
  87     argc -= optidx;
  88     argv += optidx;
  89
  90     if (argc != 0)
  91         usage (1);
  92
  93     ret = krb5_init_context (&context);
  94     if (ret)
  95         errx (1, "krb5_init_context failed: %d", ret);
  96
  97     if(cache == NULL) {
  98         cache = krb5_cc_default_name(context);
  99         if (cache == NULL) {
 100             warnx ("krb5_cc_default_name: %s", krb5_get_err_text(context, ret));
 101             exit(1);
 102         }
 103     }
 104
 105     ret =  krb5_cc_resolve(context,
 106                            cache,
 107                            &ccache);
 108
 109     if (ret == 0) {
 110         if (credential) {
 111             krb5_creds mcred;
 112
 113             krb5_cc_clear_mcred(&mcred);
 114
 115             ret = krb5_parse_name(context, credential, &mcred.server);
 116             if (ret)
 117                 krb5_err(context, 1, ret,
 118                          "Can't parse principal %s", credential);
 119
 120             ret = krb5_cc_remove_cred(context, ccache, 0, &mcred);
 121             if (ret)
 122                 krb5_err(context, 1, ret,
 123                          "Failed to remove principal %s", credential);
 124
 125             krb5_cc_close(context, ccache);
 126             krb5_free_principal(context, mcred.server);
 127             krb5_free_context(context);
 128             return 0;
 129         }
 130
 131         ret = krb5_cc_destroy (context, ccache);
 132         if (ret) {
 133             warnx ("krb5_cc_destroy: %s", krb5_get_err_text(context, ret));
 134             exit_val = 1;
 135         }
 136     } else {
 137         warnx ("krb5_cc_resolve(%s): %s", cache,
 138                krb5_get_err_text(context, ret));
 139         exit_val = 1;
 140     }
 141
 142     krb5_free_context (context);
 143
 144     if (unlog_flag && k_hasafs ()) {
 145         if (k_unlog ())
 146             exit_val = 1;
 147     }
 148
 149     return exit_val;
 150 }