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/* helper functions to dela with asn1c data types */
/* (C) 2014-2015 by Harald Welte <laforge@gnumonks.org>
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <string.h>
#include <arpa/inet.h>
#include <osmocom/core/utils.h>
#include "asn1helpers.h"
void asn1_u32_to_bitstring(BIT_STRING_t *bitstr, uint32_t *buf, uint32_t in)
{
*buf = htonl(in);
bitstr->buf = (uint8_t *) buf;
bitstr->size = sizeof(uint32_t);
bitstr->bits_unused = 0;
}
void asn1_u24_to_bitstring(BIT_STRING_t *bitstr, uint32_t *buf, uint32_t in)
{
*buf = htonl(in);
bitstr->buf = (uint8_t *) buf;
bitstr->size = 24/8;
bitstr->bits_unused = 0;
}
int asn1_strncpy(char *out, const OCTET_STRING_t *in, size_t n)
{
size_t cpylen = n-1;
if (in->size < cpylen)
cpylen = in->size;
strncpy(out, (char *)in->buf, cpylen);
out[cpylen] = '\0';
return cpylen;
}
uint16_t asn1str_to_u16(const OCTET_STRING_t *in)
{
OSMO_ASSERT(in && in->size == sizeof(uint16_t));
return ntohs(*(uint16_t *)in->buf);
}
uint8_t asn1str_to_u8(const OCTET_STRING_t *in)
{
OSMO_ASSERT(in && in->size == sizeof(uint8_t));
return *(uint8_t *)in->buf;
}
uint32_t asn1bitstr_to_u32(const BIT_STRING_t *in)
{
OSMO_ASSERT(in && in->size == sizeof(uint32_t));
return ntohl(*(uint32_t *)in->buf);
}
uint32_t asn1bitstr_to_u24(const BIT_STRING_t *in)
{
OSMO_ASSERT(in && in->size == 3);
return *(uint32_t *)in->buf;
}
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