crypto/dist/heimdal/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("$Heimdal: kdestroy.c 20458 2007-04-19 20:41:27Z lha $"
  36         "$NetBSD$");
  37
  38 static const char *cache;
  39 static const char *credential;
  40 static int help_flag;
  41 static int version_flag;
  42 static int unlog_flag = 1;
  43 static int dest_tkt_flag = 1;
  44
  45 struct getargs args[] = {
  46     { "credential",     0,   arg_string, &credential,
  47       "remove one credential", "principal" },
  48     { "cache",          'c', arg_string, &cache, "cache to destroy", "cache" },
  49     { "unlog",          0,   arg_negative_flag, &unlog_flag,
  50       "do not destroy tokens", NULL },
  51     { "delete-v4",      0,   arg_negative_flag, &dest_tkt_flag,
  52       "do not destroy v4 tickets", NULL },
  53     { "version",        0,   arg_flag, &version_flag, NULL, NULL },
  54     { "help",           'h', arg_flag, &help_flag, NULL, NULL}
  55 };
  56
  57 int num_args = sizeof(args) / sizeof(args[0]);
  58
  59 static void
  60 usage (int status)
  61 {
  62     arg_printusage (args, num_args, NULL, "");
  63     exit (status);
  64 }
  65
  66 int
  67 main (int argc, char **argv)
  68 {
  69     krb5_error_code ret;
  70     krb5_context context;
  71     krb5_ccache  ccache;
  72     int optidx = 0;
  73     int exit_val = 0;
  74
  75     setprogname (argv[0]);
  76
  77     if(getarg(args, num_args, argc, argv, &optidx))
  78         usage(1);
  79
  80     if (help_flag)
  81         usage (0);
  82
  83     if(version_flag){
  84         print_version(NULL);
  85         exit(0);
  86     }
  87
  88     argc -= optidx;
  89     argv += optidx;
  90
  91     if (argc != 0)
  92         usage (1);
  93
  94     ret = krb5_init_context (&context);
  95     if (ret)
  96         errx (1, "krb5_init_context failed: %d", ret);
  97
  98     if(cache == NULL) {
  99         cache = krb5_cc_default_name(context);
 100         if (cache == NULL) {
 101             warnx ("krb5_cc_default_name: %s", krb5_get_err_text(context, ret));
 102             exit(1);
 103         }
 104     }
 105
 106     ret =  krb5_cc_resolve(context,
 107                            cache,
 108                            &ccache);
 109
 110     if (ret == 0) {
 111         if (credential) {
 112             krb5_creds mcred;
 113
 114             krb5_cc_clear_mcred(&mcred);
 115
 116             ret = krb5_parse_name(context, credential, &mcred.server);
 117             if (ret)
 118                 krb5_err(context, 1, ret,
 119                          "Can't parse principal %s", credential);
 120
 121             ret = krb5_cc_remove_cred(context, ccache, 0, &mcred);
 122             if (ret)
 123                 krb5_err(context, 1, ret,
 124                          "Failed to remove principal %s", credential);
 125
 126             krb5_cc_close(context, ccache);
 127             krb5_free_principal(context, mcred.server);
 128             krb5_free_context(context);
 129             return 0;
 130         }
 131
 132         ret = krb5_cc_destroy (context, ccache);
 133         if (ret) {
 134             warnx ("krb5_cc_destroy: %s", krb5_get_err_text(context, ret));
 135             exit_val = 1;
 136         }
 137     } else {
 138         warnx ("krb5_cc_resolve(%s): %s", cache,
 139                krb5_get_err_text(context, ret));
 140         exit_val = 1;
 141     }
 142
 143     krb5_free_context (context);
 144
 145     if (unlog_flag && k_hasafs ()) {
 146         if (k_unlog ())
 147             exit_val = 1;
 148     }
 149
 150     return exit_val;
 151 }