lib/krb5/misc.c

   1 /*
   2  * Copyright (c) 1997 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 "krb5_locl.h"
  35
  36 krb5_error_code KRB5_LIB_FUNCTION
  37 _krb5_s4u2self_to_checksumdata(krb5_context context,
  38                                const PA_S4U2Self *self,
  39                                krb5_data *data)
  40 {
  41     krb5_error_code ret;
  42     krb5_ssize_t ssize;
  43     krb5_storage *sp;
  44     size_t size;
  45     int i;
  46
  47     sp = krb5_storage_emem();
  48     if (sp == NULL) {
  49         krb5_clear_error_message(context);
  50         return ENOMEM;
  51     }
  52     krb5_storage_set_flags(sp, KRB5_STORAGE_BYTEORDER_LE);
  53     ret = krb5_store_int32(sp, self->name.name_type);
  54     if (ret)
  55         goto out;
  56     for (i = 0; i < self->name.name_string.len; i++) {
  57         size = strlen(self->name.name_string.val[i]);
  58         ssize = krb5_storage_write(sp, self->name.name_string.val[i], size);
  59         if (ssize != size) {
  60             ret = ENOMEM;
  61             goto out;
  62         }
  63     }
  64     size = strlen(self->realm);
  65     ssize = krb5_storage_write(sp, self->realm, size);
  66     if (ssize != size) {
  67         ret = ENOMEM;
  68         goto out;
  69     }
  70     size = strlen(self->auth);
  71     ssize = krb5_storage_write(sp, self->auth, size);
  72     if (ssize != size) {
  73         ret = ENOMEM;
  74         goto out;
  75     }
  76
  77     ret = krb5_storage_to_data(sp, data);
  78     krb5_storage_free(sp);
  79     return ret;
  80
  81 out:
  82     krb5_clear_error_message(context);
  83     return ret;
  84 }