lib/asn1/extra.c

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