/**
* Duplicate a string, safely, allocating space on the heap
* @param src the source string which characters copy from
* @return the duplicated, allocated string
*/
char* MQTTStrdup(const char* src)
{
size_t mlen = strlen(src) + 1;
char* temp = malloc(mlen);
MQTTStrncpy(temp, src, mlen);
return temp;
}
/**
* Separates an address:port into two separate values
* @param uri the input string - hostname:port
* @param port the returned port integer
* @return the address string
*/
char* MQTTProtocol_addressPort(const char* uri, int* port)
{
char* colon_pos = strrchr(uri, ':'); /* reverse find to allow for ':' in IPv6 addresses */
char* buf = (char*)uri;
int len;
FUNC_ENTRY;
if (uri[0] == '[')
{ /* ip v6 */
if (colon_pos < strrchr(uri, ']'))
colon_pos = NULL; /* means it was an IPv6 separator, not for host:port */
}
if (colon_pos)
{
int addr_len = colon_pos - uri;
buf = malloc(addr_len + 1);
*port = atoi(colon_pos + 1);
MQTTStrncpy(buf, uri, addr_len+1);
}
else
*port = DEFAULT_PORT;
len = strlen(buf);
if (buf[len - 1] == ']')
buf[len - 1] = '\0';
FUNC_EXIT;
return buf;
}
