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
  36 static const char *cache;
  37 static const char *credential;
  38 static int help_flag;
  39 static int version_flag;
  40 #ifndef NO_AFS
  41 static int unlog_flag = 1;
  42 #endif
  43 static int dest_tkt_flag = 1;
  44 static int all_flag = 0;
  45
  46 struct getargs args[] = {
  47     { "credential",     0,   arg_string, &credential,
  48       "remove one credential", "principal" },
  49     { "cache",          'c', arg_string, &cache, "cache to destroy", "cache" },
  50     { "all",            'A', arg_flag, &all_flag, "destroy all caches" },
  51 #ifndef NO_AFS
  52     { "unlog",          0,   arg_negative_flag, &unlog_flag,
  53       "do not destroy tokens", NULL },
  54 #endif
  55     { "delete-v4",      0,   arg_negative_flag, &dest_tkt_flag,
  56       "do not destroy v4 tickets", NULL },
  57     { "version",        0,   arg_flag, &version_flag, NULL, NULL },
  58     { "help",           'h', arg_flag, &help_flag, NULL, NULL}
  59 };
  60
  61 int num_args = sizeof(args) / sizeof(args[0]);
  62
  63 static void
  64 usage (int status)
  65 {
  66     arg_printusage (args, num_args, NULL, "");
  67     exit (status);
  68 }
  69
  70 int
  71 main (int argc, char **argv)
  72 {
  73     krb5_error_code ret;
  74     krb5_context context;
  75     krb5_ccache  ccache;
  76     int optidx = 0;
  77     int exit_val = 0;
  78
  79     setprogname (argv[0]);
  80
  81     if(getarg(args, num_args, argc, argv, &optidx))
  82         usage(1);
  83
  84     if (help_flag)
  85         usage (0);
  86
  87     if(version_flag){
  88         print_version(NULL);
  89         exit(0);
  90     }
  91
  92     argc -= optidx;
  93     argv += optidx;
  94
  95     if (argc != 0)
  96         usage (1);
  97
  98     ret = krb5_init_context (&context);
  99     if (ret)
 100         errx (1, "krb5_init_context failed: %d", ret);
 101
 102     if (all_flag) {
 103         krb5_cccol_cursor cursor;
 104
 105         ret = krb5_cccol_cursor_new (context, &cursor);
 106         if (ret)
 107             krb5_err(context, 1, ret, "krb5_cccol_cursor_new");
 108
 109         while (krb5_cccol_cursor_next (context, cursor, &ccache) == 0 && ccache != NULL) {
 110
 111             ret = krb5_cc_destroy (context, ccache);
 112             if (ret) {
 113                 krb5_warn(context, ret, "krb5_cc_destroy");
 114                 exit_val = 1;
 115             }
 116         }
 117         krb5_cccol_cursor_free(context, &cursor);
 118
 119     } else {
 120         if(cache == NULL) {
 121             ret = krb5_cc_default(context, &ccache);
 122             if (ret)
 123                 krb5_err(context, 1, ret, "krb5_cc_default");
 124         } else {
 125             ret =  krb5_cc_resolve(context,
 126                                    cache,
 127                                    &ccache);
 128             if (ret)
 129                 krb5_err(context, 1, ret, "krb5_cc_resolve");
 130         }
 131
 132         if (ret == 0) {
 133             if (credential) {
 134                 krb5_creds mcred;
 135
 136                 krb5_cc_clear_mcred(&mcred);
 137
 138                 ret = krb5_parse_name(context, credential, &mcred.server);
 139                 if (ret)
 140                     krb5_err(context, 1, ret,
 141                              "Can't parse principal %s", credential);
 142
 143                 ret = krb5_cc_remove_cred(context, ccache, 0, &mcred);
 144                 if (ret)
 145                     krb5_err(context, 1, ret,
 146                              "Failed to remove principal %s", credential);
 147
 148                 krb5_cc_close(context, ccache);
 149                 krb5_free_principal(context, mcred.server);
 150                 krb5_free_context(context);
 151                 return 0;
 152             }
 153
 154             ret = krb5_cc_destroy (context, ccache);
 155             if (ret) {
 156                 krb5_warn(context, ret, "krb5_cc_destroy");
 157                 exit_val = 1;
 158             }
 159         }
 160     }
 161
 162     krb5_free_context (context);
 163
 164 #ifndef NO_AFS
 165     if (unlog_flag && k_hasafs ()) {
 166         if (k_unlog ())
 167             exit_val = 1;
 168     }
 169 #endif
 170
 171     return exit_val;
 172 }