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/*
* Copyright (c) 1997-2005 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Portions Copyright (c) 2009 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "der_locl.h"
RCSID("$Id$");
size_t
_heim_len_unsigned (unsigned val)
{
size_t ret = 0;
int last_val_gt_128;
do {
++ret;
last_val_gt_128 = (val >= 128);
val /= 256;
} while (val);
if(last_val_gt_128)
ret++;
return ret;
}
size_t
_heim_len_int (int val)
{
unsigned char q;
size_t ret = 0;
if (val >= 0) {
do {
q = val % 256;
ret++;
val /= 256;
} while(val);
if(q >= 128)
ret++;
} else {
val = ~val;
do {
q = ~(val % 256);
ret++;
val /= 256;
} while(val);
if(q < 128)
ret++;
}
return ret;
}
static size_t
len_oid (const heim_oid *oid)
{
size_t ret = 1;
size_t n;
for (n = 2; n < oid->length; ++n) {
unsigned u = oid->components[n];
do {
++ret;
u /= 128;
} while(u > 0);
}
return ret;
}
size_t
der_length_len (size_t len)
{
if (len < 128)
return 1;
else {
int ret = 0;
do {
++ret;
len /= 256;
} while (len);
return ret + 1;
}
}
size_t
der_length_tag(unsigned int tag)
{
size_t len = 0;
if(tag <= 30)
return 1;
while(tag) {
tag /= 128;
len++;
}
return len + 1;
}
size_t
der_length_integer (const int *data)
{
return _heim_len_int (*data);
}
size_t
der_length_unsigned (const unsigned *data)
{
return _heim_len_unsigned(*data);
}
size_t
der_length_enumerated (const unsigned *data)
{
return _heim_len_int (*data);
}
size_t
der_length_general_string (const heim_general_string *data)
{
return strlen(*data);
}
size_t
der_length_utf8string (const heim_utf8_string *data)
{
return strlen(*data);
}
size_t
der_length_printable_string (const heim_printable_string *data)
{
return data->length;
}
size_t
der_length_ia5_string (const heim_ia5_string *data)
{
return data->length;
}
size_t
der_length_bmp_string (const heim_bmp_string *data)
{
return data->length * 2;
}
size_t
der_length_universal_string (const heim_universal_string *data)
{
return data->length * 4;
}
size_t
der_length_visible_string (const heim_visible_string *data)
{
return strlen(*data);
}
size_t
der_length_octet_string (const heim_octet_string *k)
{
return k->length;
}
size_t
der_length_heim_integer (const heim_integer *k)
{
if (k->length == 0)
return 1;
if (k->negative)
return k->length + (((~(((unsigned char *)k->data)[0])) & 0x80) ? 0 : 1);
else
return k->length + ((((unsigned char *)k->data)[0] & 0x80) ? 1 : 0);
}
size_t
der_length_oid (const heim_oid *k)
{
return len_oid (k);
}
size_t
der_length_generalized_time (const time_t *t)
{
heim_octet_string k;
size_t ret;
_heim_time2generalizedtime (*t, &k, 1);
ret = k.length;
free(k.data);
return ret;
}
size_t
der_length_utctime (const time_t *t)
{
heim_octet_string k;
size_t ret;
_heim_time2generalizedtime (*t, &k, 0);
ret = k.length;
free(k.data);
return ret;
}
size_t
der_length_boolean (const int *k)
{
return 1;
}
size_t
der_length_bit_string (const heim_bit_string *k)
{
return (k->length + 7) / 8 + 1;
}
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