kadmin/ext.c

   1 /*
   2  * Copyright (c) 1997 - 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 struct ext_keytab_data {
  38     krb5_keytab keytab;
  39 };
  40
  41 static int
  42 do_ext_keytab(krb5_principal principal, void *data)
  43 {
  44     krb5_error_code ret;
  45     kadm5_principal_ent_rec princ;
  46     struct ext_keytab_data *e = data;
  47     krb5_keytab_entry *keys = NULL;
  48     krb5_keyblock *k = NULL;
  49     int i, n_k;
  50
  51     ret = kadm5_get_principal(kadm_handle, principal, &princ,
  52                               KADM5_PRINCIPAL|KADM5_KVNO|KADM5_KEY_DATA);
  53     if(ret)
  54         return ret;
  55
  56     if (princ.n_key_data) {
  57         keys = malloc(sizeof(*keys) * princ.n_key_data);
  58         if (keys == NULL) {
  59             kadm5_free_principal_ent(kadm_handle, &princ);
  60             krb5_clear_error_message(context);
  61             return ENOMEM;
  62         }
  63         for (i = 0; i < princ.n_key_data; i++) {
  64             krb5_key_data *kd = &princ.key_data[i];
  65
  66             keys[i].principal = princ.principal;
  67             keys[i].vno = kd->key_data_kvno;
  68             keys[i].keyblock.keytype = kd->key_data_type[0];
  69             keys[i].keyblock.keyvalue.length = kd->key_data_length[0];
  70             keys[i].keyblock.keyvalue.data = kd->key_data_contents[0];
  71             keys[i].timestamp = time(NULL);
  72         }
  73
  74         n_k = princ.n_key_data;
  75     } else {
  76         ret = kadm5_randkey_principal(kadm_handle, principal, &k, &n_k);
  77         if (ret) {
  78             kadm5_free_principal_ent(kadm_handle, &princ);
  79             return ret;
  80         }
  81         keys = malloc(sizeof(*keys) * n_k);
  82         if (keys == NULL) {
  83             kadm5_free_principal_ent(kadm_handle, &princ);
  84             krb5_clear_error_message(context);
  85             return ENOMEM;
  86         }
  87         for (i = 0; i < n_k; i++) {
  88             keys[i].principal = principal;
  89             keys[i].vno = princ.kvno + 1; /* XXX get entry again */
  90             keys[i].keyblock = k[i];
  91             keys[i].timestamp = time(NULL);
  92         }
  93     }
  94
  95     for(i = 0; i < n_k; i++) {
  96         ret = krb5_kt_add_entry(context, e->keytab, &keys[i]);
  97         if(ret)
  98             krb5_warn(context, ret, "krb5_kt_add_entry(%d)", i);
  99     }
 100
 101     if (k) {
 102         memset(k, 0, n_k * sizeof(*k));
 103         free(k);
 104     }
 105     if (keys)
 106         free(keys);
 107     kadm5_free_principal_ent(kadm_handle, &princ);
 108     return 0;
 109 }
 110
 111 int
 112 ext_keytab(struct ext_keytab_options *opt, int argc, char **argv)
 113 {
 114     krb5_error_code ret;
 115     int i;
 116     struct ext_keytab_data data;
 117
 118     if (opt->keytab_string == NULL)
 119         ret = krb5_kt_default(context, &data.keytab);
 120     else
 121         ret = krb5_kt_resolve(context, opt->keytab_string, &data.keytab);
 122
 123     if(ret){
 124         krb5_warn(context, ret, "krb5_kt_resolve");
 125         return 1;
 126     }
 127
 128     for(i = 0; i < argc; i++) {
 129         ret = foreach_principal(argv[i], do_ext_keytab, "ext", &data);
 130         if (ret)
 131             break;
 132     }
 133
 134     krb5_kt_close(context, data.keytab);
 135
 136     return ret != 0;
 137 }