kadmin/del_enctype.c

   1 /*
   2  * Copyright (c) 1999-2006 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 "kadmin_locl.h"
  35 #include "kadmin-commands.h"
  36
  37 /*
  38  * del_enctype principal enctypes...
  39  */
  40
  41 int
  42 del_enctype(void *opt, int argc, char **argv)
  43 {
  44     kadm5_principal_ent_rec princ;
  45     krb5_principal princ_ent = NULL;
  46     krb5_error_code ret;
  47     const char *princ_name;
  48     int i, j, k;
  49     krb5_key_data *new_key_data;
  50     int n_etypes;
  51     krb5_enctype *etypes;
  52     krb5_key_data *key;
  53
  54     memset (&princ, 0, sizeof(princ));
  55     princ_name = argv[0];
  56     n_etypes   = argc - 1;
  57     etypes     = malloc (n_etypes * sizeof(*etypes));
  58     if (etypes == NULL) {
  59         krb5_warnx (context, "out of memory");
  60         return 0;
  61     }
  62     argv++;
  63     for (i = 0; i < n_etypes; ++i) {
  64         ret = krb5_string_to_enctype (context, argv[i], &etypes[i]);
  65         if (ret) {
  66             krb5_warnx (context, "bad enctype \"%s\"", argv[i]);
  67             goto out2;
  68         }
  69     }
  70
  71     ret = krb5_parse_name(context, princ_name, &princ_ent);
  72     if (ret) {
  73         krb5_warn (context, ret, "krb5_parse_name %s", princ_name);
  74         goto out2;
  75     }
  76
  77     ret = kadm5_get_principal(kadm_handle, princ_ent, &princ,
  78                               KADM5_PRINCIPAL | KADM5_KEY_DATA);
  79     if (ret) {
  80         krb5_free_principal (context, princ_ent);
  81         krb5_warnx (context, "no such principal: %s", princ_name);
  82         goto out2;
  83     }
  84
  85     if (kadm5_all_keys_are_bogus(princ.n_key_data, princ.key_data)) {
  86         krb5_warnx(context, "user lacks get-keys privilege");
  87         goto out;
  88     }
  89
  90     new_key_data   = malloc(princ.n_key_data * sizeof(*new_key_data));
  91     if (new_key_data == NULL && princ.n_key_data != 0) {
  92         krb5_warnx (context, "out of memory");
  93         goto out;
  94     }
  95
  96     for (i = 0, j = 0; i < princ.n_key_data; ++i) {
  97         int docopy = 1;
  98         key = &princ.key_data[i];
  99
 100         for (k = 0; k < n_etypes; ++k) {
 101             if (etypes[k] == key->key_data_type[0]) {
 102                 docopy = 0;
 103                 break;
 104             }
 105         }
 106         if (docopy) {
 107             new_key_data[j++] = *key;
 108         } else {
 109             int16_t ignore = 1;
 110
 111             kadm5_free_key_data (kadm_handle, &ignore, key);
 112         }
 113     }
 114
 115     free (princ.key_data);
 116     if (j == 0) {
 117         free(new_key_data);
 118         new_key_data = NULL;
 119     }
 120     princ.n_key_data = j;
 121     princ.key_data   = new_key_data;
 122
 123     ret = kadm5_modify_principal (kadm_handle, &princ, KADM5_KEY_DATA);
 124     if (ret)
 125         krb5_warn(context, ret, "kadm5_modify_principal");
 126 out:
 127     krb5_free_principal (context, princ_ent);
 128     kadm5_free_principal_ent(kadm_handle, &princ);
 129 out2:
 130     free (etypes);
 131     return ret != 0;
 132 }