Add parse and print functions for heim_integer.

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@16127 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
2005-10-07 03:49:16 +00:00
parent 5b3597703d
commit 7c785284bd
3 changed files with 100 additions and 0 deletions

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@@ -358,6 +358,7 @@ libasn1_la_SOURCES = \
der_length.c \
der_copy.c \
der_cmp.c \
der_format.c \
extra.c \
timegm.c \
$(BUILT_SOURCES)

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@@ -240,4 +240,7 @@ int der_get_type_num(const char *);
const char * der_get_tag_name(unsigned);
int der_get_tag_num(const char *);
int der_parse_hex_heim_integer(const char *, heim_integer *);
int der_print_hex_heim_integer(const heim_integer *, char **);
#endif /* __DER_H__ */

96
lib/asn1/der_format.c Normal file
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@@ -0,0 +1,96 @@
/*
* Copyright (c) 2005 Kungliga Tekniska H<>gskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* 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"
#include <hex.h>
RCSID("$Id$");
int
der_parse_hex_heim_integer (const char *p, heim_integer *data)
{
ssize_t len;
data->length = 0;
data->negative = 0;
data->data = NULL;
if (*p == '-') {
p++;
data->negative = 1;
}
len = strlen(p);
if (len < 0)
return EINVAL;
data->length = len / 2;
data->data = malloc(data->length);
if (data->data == NULL)
return ENOMEM;
len = hex_decode(p, data->data, data->length);
if (len < 0)
return EINVAL;
{
unsigned char *p = data->data;
while(*p == 0 && len > 0) {
p++;
len--;
}
data->length = len;
memmove(data->data, p, len);
}
return 0;
}
int
der_print_hex_heim_integer (const heim_integer *data, char **p)
{
ssize_t len;
char *q;
len = hex_encode(data->data, data->length, p);
if (len < 0)
return ENOMEM;
if (data->negative) {
len = asprintf(&q, "-%s", *p);
free(*p);
if (len < 0)
return ENOMEM;
*p = q;
}
return 0;
}