7c785284bd
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@16127 ec53bebd-3082-4978-b11e-865c3cabbd6b
97 lines
2.6 KiB
C
97 lines
2.6 KiB
C
/*
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* Copyright (c) 2005 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "der_locl.h"
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#include <hex.h>
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RCSID("$Id$");
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int
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der_parse_hex_heim_integer (const char *p, heim_integer *data)
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{
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ssize_t len;
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data->length = 0;
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data->negative = 0;
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data->data = NULL;
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if (*p == '-') {
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p++;
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data->negative = 1;
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}
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len = strlen(p);
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if (len < 0)
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return EINVAL;
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data->length = len / 2;
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data->data = malloc(data->length);
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if (data->data == NULL)
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return ENOMEM;
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len = hex_decode(p, data->data, data->length);
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if (len < 0)
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return EINVAL;
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{
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unsigned char *p = data->data;
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while(*p == 0 && len > 0) {
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p++;
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len--;
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}
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data->length = len;
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memmove(data->data, p, len);
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}
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return 0;
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}
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int
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der_print_hex_heim_integer (const heim_integer *data, char **p)
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{
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ssize_t len;
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char *q;
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len = hex_encode(data->data, data->length, p);
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if (len < 0)
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return ENOMEM;
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if (data->negative) {
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len = asprintf(&q, "-%s", *p);
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free(*p);
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if (len < 0)
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return ENOMEM;
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*p = q;
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}
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return 0;
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}
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