crypto/external/bsd/heimdal/dist/lib/asn1/extra.c

   1 /*      $NetBSD: extra.c,v 1.1.1.2 2014/04/24 12:45:28 pettai Exp $     */
   2
   3 /*
   4  * Copyright (c) 2003 - 2005 Kungliga Tekniska Högskolan
   5  * (Royal Institute of Technology, Stockholm, Sweden).
   6  * All rights reserved.
   7  *
   8  * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  *
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  *
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  *
  21  * 3. Neither the name of the Institute nor the names of its contributors
  22  *    may be used to endorse or promote products derived from this software
  23  *    without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  */
  37
  38 #include "der_locl.h"
  39 #include <krb5/heim_asn1.h>
  40
  41 __RCSID("NetBSD");
  42
  43 int
  44 encode_heim_any(unsigned char *p, size_t len,
  45                 const heim_any *data, size_t *size)
  46 {
  47     return der_put_octet_string (p, len, data, size);
  48 }
  49
  50 int
  51 decode_heim_any(const unsigned char *p, size_t len,
  52                 heim_any *data, size_t *size)
  53 {
  54     size_t len_len, length, l;
  55     Der_class thisclass;
  56     Der_type thistype;
  57     unsigned int thistag;
  58     int e;
  59
  60     memset(data, 0, sizeof(*data));
  61
  62     e = der_get_tag (p, len, &thisclass, &thistype, &thistag, &l);
  63     if (e) return e;
  64     if (l > len)
  65         return ASN1_OVERFLOW;
  66     e = der_get_length(p + l, len - l, &length, &len_len);
  67     if (e) return e;
  68     if (length == ASN1_INDEFINITE) {
  69         if (len < len_len + l)
  70             return ASN1_OVERFLOW;
  71         length = len - (len_len + l);
  72     } else {
  73         if (len < length + len_len + l)
  74             return ASN1_OVERFLOW;
  75     }
  76
  77     data->data = malloc(length + len_len + l);
  78     if (data->data == NULL)
  79         return ENOMEM;
  80     data->length = length + len_len + l;
  81     memcpy(data->data, p, length + len_len + l);
  82
  83     if (size)
  84         *size = length + len_len + l;
  85
  86     return 0;
  87 }
  88
  89 void
  90 free_heim_any(heim_any *data)
  91 {
  92     der_free_octet_string(data);
  93 }
  94
  95 size_t
  96 length_heim_any(const heim_any *data)
  97 {
  98     return data->length;
  99 }
 100
 101 int
 102 copy_heim_any(const heim_any *from, heim_any *to)
 103 {
 104     return der_copy_octet_string(from, to);
 105 }
 106
 107 int
 108 encode_heim_any_set(unsigned char *p, size_t len,
 109                     const heim_any_set *data, size_t *size)
 110 {
 111     return der_put_octet_string (p, len, data, size);
 112 }
 113
 114 int
 115 decode_heim_any_set(const unsigned char *p, size_t len,
 116                 heim_any_set *data, size_t *size)
 117 {
 118     return der_get_octet_string(p, len, data, size);
 119 }
 120
 121 void
 122 free_heim_any_set(heim_any_set *data)
 123 {
 124     der_free_octet_string(data);
 125 }
 126
 127 size_t
 128 length_heim_any_set(const heim_any *data)
 129 {
 130     return data->length;
 131 }
 132
 133 int
 134 copy_heim_any_set(const heim_any_set *from, heim_any_set *to)
 135 {
 136     return der_copy_octet_string(from, to);
 137 }
 138
 139 int
 140 heim_any_cmp(const heim_any_set *p, const heim_any_set *q)
 141 {
 142     return der_heim_octet_string_cmp(p, q);
 143 }