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#include "common.h"
uint8_t *CToxProto::HexToBinString(char *hex_string)
{
// byte is represented by exactly 2 hex digits, so lenth of binary string
// is half of that of the hex one. only hex string with even length
// valid. the more proper implementation would be to check if strlen(hex_string)
// is odd and return error code if it is. we assume strlen is even. if it's not
// then the last byte just won't be written in 'ret'.
size_t i, len = (strlen(hex_string) / 2);
uint8_t *ret = (uint8_t*)mir_alloc(len);
char *pos = hex_string;
for (i = 0; i < len; i++, pos += 2)
{
sscanf(pos, "%2hhx", &ret[i]);
}
return ret;
}
char *CToxProto::BinToHexString(uint8_t *bin_string)
{
uint32_t i, delta = 0, pos_extra, sum_extra = 0;
char *ret = (char*)mir_alloc(TOX_FRIEND_ADDRESS_SIZE);
for (i = 0; i < TOX_FRIEND_ADDRESS_SIZE; i++)
{
sprintf(&ret[2 * i + delta], "%02hhX", bin_string[i]);
if ((i + 1) == TOX_CLIENT_ID_SIZE)
pos_extra = 2 * (i + 1) + delta;
if (i >= TOX_CLIENT_ID_SIZE)
sum_extra |= bin_string[i];
/*if (!((i + 1) % FRADDR_TOSTR_CHUNK_LEN)) {
id_str[2 * (i + 1) + delta] = ' ';
delta++;
}*/
}
ret[2 * i + delta] = 0;
if (!sum_extra)
ret[pos_extra] = 0;
return ret;
}
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