osmo-iuh/src/asn1helpers.c

46 lines
853 B
C

#include <string.h>
#include <osmocom/core/utils.h>
#include "asn1helpers.h"
void asn1_u32_to_bitstring(BIT_STRING_t *bitstr, uint32_t *in)
{
bitstr->buf = (uint8_t *) in;
bitstr->size = sizeof(uint32_t);
bitstr->bits_unused = 0;
}
int asn1_strncpy(char *out, const OCTET_STRING_t *in, size_t n)
{
size_t cpylen = n;
if (in->size < cpylen)
cpylen = in->size;
strncpy(out, (char *)in->buf, cpylen);
out[n-1] = '\0';
return cpylen;
}
uint16_t asn1str_to_u16(const OCTET_STRING_t *in)
{
OSMO_ASSERT(in && in->size >= sizeof(uint16_t));
return *(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 *(uint32_t *)in->buf;
}