NETWORK_API void NetworkUtility::GetIPAndPortFromString( const rString& input, rString& outIP, unsigned short& outPort )
{
if ( input == "" )
return;
outIP = "";
outPort = INVALID_PORT;
size_t colonCount = std::count( input.begin(), input.end(), ':' );
if ( colonCount == 1 )
{
outIP = GetIPFromString( input );
size_t colonPosition = input.find( ':' );
rString portString = input.substr( colonPosition + 1 );
if ( StringUtility::IsDigitsOnly( portString ) )
{
outPort = GetPortFromString( portString );
}
}
else if ( StringUtility::IsDigitsOnly( input ) )
{
outPort = GetPortFromString( input );
}
else
{
outIP = GetIPFromString( input );
}
}
rString NetworkUtility::GetIPFromDNS( const rString& input )
{
rString ip = "";
size_t colonPos = input.find_first_of( ":" );
rString dns = input;
if ( colonPos != std::string::npos )
dns = input.substr( 0, colonPos );
addrinfo* result = nullptr;
addrinfo hints;
memset(&hints, 0, sizeof( addrinfo ) );
hints.ai_family = AF_INET; // TODODB: When IPv6 implemented change this to AF_UNSPEC, for now force IPv4
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
#if PLATFORM == PLATFORM_WINDOWS
DWORD returnValue;
#elif PLATFORM == PLATFORM_LINUX
int returnValue;
#endif
returnValue = getaddrinfo( dns.c_str(), nullptr, &hints, &result );
if ( returnValue != 0 )
{
// TODODB: Handle dns lookup failure somehow
Logger::Log( "Failed DNS lookup with error: " + rString( gai_strerror( returnValue ) ), "Network", LogSeverity::WARNING_MSG );
return ip;
}
// result will be a linked list, use the first entry
void *addr;
if(result->ai_family == AF_INET)
{
sockaddr_in *ipv4 = (struct sockaddr_in *)result->ai_addr;
addr = &(ipv4->sin_addr);
char ipstr[INET_ADDRSTRLEN];
// convert the IP to a string and print it:
inet_ntop(result->ai_family, addr, ipstr, sizeof( ipstr ) );
ip = rString( ipstr );
}
// TODODB: Handle IPv6 when implemented and move inet_ntop to relevant place
//} else { // Is IPv6
//struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)p->ai_addr;
//addr = &(ipv6->sin6_addr);
//}
// Free the linked list
freeaddrinfo( result );
return ip;
}