admin/remove.c

   1 /*
   2  * Copyright (c) 1997-2004 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 "ktutil_locl.h"
  35
  36 RCSID("$Id$");
  37
  38 int
  39 kt_remove(struct remove_options *opt, int argc, char **argv)
  40 {
  41     krb5_error_code ret = 0;
  42     krb5_keytab_entry entry;
  43     krb5_keytab keytab;
  44     krb5_principal principal = NULL;
  45     krb5_enctype enctype = 0;
  46
  47     if(opt->principal_string) {
  48         ret = krb5_parse_name(context, opt->principal_string, &principal);
  49         if(ret) {
  50             krb5_warn(context, ret, "%s", opt->principal_string);
  51             return 1;
  52         }
  53     }
  54     if(opt->enctype_string) {
  55         ret = krb5_string_to_enctype(context, opt->enctype_string, &enctype);
  56         if(ret) {
  57             int t;
  58             if(sscanf(opt->enctype_string, "%d", &t) == 1)
  59                 enctype = t;
  60             else {
  61                 krb5_warn(context, ret, "%s", opt->enctype_string);
  62                 if(principal)
  63                     krb5_free_principal(context, principal);
  64                 return 1;
  65             }
  66         }
  67     }
  68     if (!principal && !enctype && !opt->kvno_integer) {
  69         krb5_warnx(context,
  70                    "You must give at least one of "
  71                    "principal, enctype or kvno.");
  72         ret = EINVAL;
  73         goto out;
  74     }
  75
  76     if((keytab = ktutil_open_keytab()) == NULL) {
  77         ret = 1;
  78         goto out;
  79     }
  80
  81     entry.principal = principal;
  82     entry.keyblock.keytype = enctype;
  83     entry.vno = opt->kvno_integer;
  84     ret = krb5_kt_remove_entry(context, keytab, &entry);
  85     krb5_kt_close(context, keytab);
  86     if(ret)
  87         krb5_warn(context, ret, "remove");
  88  out:
  89     if(principal)
  90         krb5_free_principal(context, principal);
  91     return ret != 0;
  92 }
  93