bool
LocalIPAddresses::IsWithinLoopbackRange(const IPAddress &address)
{
if (address.GetType() == IPAddress::IPV4)
{
unsigned __int64 longAddress = address.GetAddress1();
// 127.0.0.1 - 127.255.255.255
if (longAddress >= 2130706433 && longAddress <= 2147483647)
return true;
else
return false;
}
else if (address.GetType() == IPAddress::IPV6)
{
if (address.GetAddress1() == 0 && address.GetAddress2() == 1)
return true;
else
return false;
}
return true;
/*
*/
}
bool
TCPConnection::Connect(const AnsiString &remote_ip_address, long remotePort, const IPAddress &localAddress)
{
#if _DEBUG
if (!StringParser::IsValidIPAddress(remote_ip_address))
{
ErrorManager::Instance()->ReportError(ErrorManager::High, 5506, "TCPConnection::Connect",
Formatter::Format("Attempting to connect to {0} - Not a valid IP address.", remote_ip_address));
}
#endif
remote_port_ = remotePort;
remote_ip_address_ = remote_ip_address;
is_client_ = true;
LOG_TCPIP(Formatter::Format("Connecting to {0}:{1}...", remote_ip_address_, remotePort));
if (!localAddress.IsAny())
{
boost::system::error_code error_code;
if (localAddress.GetType() == IPAddress::IPV4)
socket_.open(boost::asio::ip::tcp::v4(), error_code);
else if (localAddress.GetType() == IPAddress::IPV6)
socket_.open(boost::asio::ip::tcp::v6(), error_code);
if (error_code)
{
String errorMessage = Formatter::Format("Failed to open local socket on IP address {0}", localAddress.ToString());
OnCouldNotConnect(errorMessage);
ReportError(ErrorManager::Medium, 5520, "TCPConnection::Connect", errorMessage, error_code);
return false;
}
socket_.bind(boost::asio::ip::tcp::endpoint(localAddress.GetAddress(), 0), error_code);
if (error_code)
{
String errorMessage = Formatter::Format("Failed to bind to IP address {0}.", localAddress.ToString());
ReportError(ErrorManager::Medium, 4330, "TCPConnection::Connect", errorMessage, error_code);
OnCouldNotConnect(errorMessage);
boost::system::error_code ignored_error_code;
socket_.close(ignored_error_code);
return false;
}
}
// Start an asynchronous resolve to translate the server and service names
// into a list of endpoints.
StartAsyncConnect_(remote_ip_address, remotePort);
return true;
}
/** @details The broadcast address can only be calculated on a IPv4 network. While it is
* technically possible to calculate an IPv6 broadcast address, the IPv6 protocol has dropped
* support for broadcasting. Since broadcasting is not supported in IPv6, this method will result
* in an exception given an IPv6 address.
* @param ip An IP address on the network.
* @param netmask The netmask defining the network range.
* @returns The broadcast address.
*/
_CGUL_EXPORT CGUL::Network::IPAddress CGUL::Network::IPAddress::CalculateBroadcast(const IPAddress& ip, const IPAddress& netmask)
{
if (ip.GetType() == IPAddressType::IPV6 || netmask.GetType() == IPAddressType::IPV6)
{
throw NetworkException(NetworkExceptionCode::FAILED_CALCULATE_ADDRESS, NetworkExceptionReason::ADDRESS_INVALID);
}
if (!ip.IsValid() || ip.GetType() != netmask.GetType())
{
throw NetworkException(NetworkExceptionCode::FAILED_CALCULATE_ADDRESS, NetworkExceptionReason::ADDRESS_MISMATCH);
}
return IPAddress(ip.ToUInt32() | (~netmask.ToUInt32()));
}
bool
DNSResolver::GetPTRRecords(const String &sIP, std::vector<String> &vecFoundNames)
{
IPAddress address;
if (!address.TryParse(AnsiString(sIP), true))
return false;
if (address.GetType() == IPAddress::IPV4)
{
std::vector<String> vecItems = StringParser::SplitString(sIP, ".");
reverse(vecItems.begin(), vecItems.end());
String result = StringParser::JoinVector(vecItems, ".");
return Resolve_(result + ".in-addr.arpa", vecFoundNames, DNS_TYPE_PTR, 0);
}
else
{
AnsiString long_ipv6 = address.ToLongString();
long_ipv6.MakeReverse();
long_ipv6.Remove(':');
for (int i = long_ipv6.GetLength() - 1; i > 0; i--)
{
long_ipv6.insert(i, 1, '.');
}
return Resolve_(long_ipv6 + ".ip6.arpa", vecFoundNames, DNS_TYPE_PTR, 0);
}
}
shared_ptr<SecurityRange>
PersistentSecurityRange::ReadMatchingIP(const IPAddress &ipaddress)
{
shared_ptr<SecurityRange> empty;
IPAddressSQLHelper helper;
String sSQL;
if (ipaddress.GetType() == IPAddress::IPV4)
{
shared_ptr<SecurityRange> pSR = shared_ptr<SecurityRange>(new SecurityRange());
sSQL.Format(_T("select * from hm_securityranges where %s >= rangelowerip1 and %s <= rangeupperip1 and rangelowerip2 IS NULL and rangeupperip2 IS NULL order by rangepriorityid desc"),
String(helper.GetAddress1String(ipaddress)), String(helper.GetAddress1String(ipaddress)));
if (!ReadObject(pSR, SQLCommand(sSQL)))
return empty;
return pSR;
}
else
{
// Read all IPv6 items.
shared_ptr<SecurityRange> bestMatch;
SQLCommand command(_T("select * from hm_securityranges where rangelowerip2 is not null order by rangepriorityid desc"));
shared_ptr<DALRecordset> recordset = Application::Instance()->GetDBManager()->OpenRecordset(command);
if (!recordset)
return empty;
while (!recordset->IsEOF())
{
shared_ptr<SecurityRange> securityRange = shared_ptr<SecurityRange>(new SecurityRange());
if (ReadObject(securityRange, recordset) == false)
return empty;
if (ipaddress.WithinRange(securityRange->GetLowerIP(), securityRange->GetUpperIP()))
{
// This IP range matches the client. Does it have higher prio than the currently
// matching?
if (!bestMatch || securityRange->GetPriority() > bestMatch->GetPriority())
bestMatch = securityRange;
}
recordset->MoveNext();
}
return bestMatch;
}
}
AnsiString
IPAddressSQLHelper::GetAddress2Equals(const IPAddress &address) const
{
if (address.GetType() == IPAddress::IPV4)
return "IS NULL";
String s;
s.Format(_T("= %I64d"), address.GetAddress2());
return s;
}
/** @details A network address defines the "bottom-most" address for a given network.
* @param ip An IP address on the network.
* @param netmask The netmask defining the network range.
* @returns The network address.
*/
_CGUL_EXPORT CGUL::Network::IPAddress CGUL::Network::IPAddress::CalculateNetwork(const IPAddress& ip, const IPAddress& netmask)
{
if (!ip.IsValid() || ip.GetType() != netmask.GetType())
{
throw NetworkException(NetworkExceptionCode::FAILED_CALCULATE_ADDRESS, NetworkExceptionReason::ADDRESS_MISMATCH);
}
if (ip.GetType() == IPAddressType::IPV4)
{
return IPAddress(ip.ToUInt32() & netmask.ToUInt32());
}
else
{
UInt64 network[2];
network[0] = ip.address[0] & netmask.address[0];
network[1] = ip.address[1] & netmask.address[1];
return IPAddress(network);
}
}
void
IPAddressSQLHelper::AppendStatement(SQLStatement &statement, const IPAddress &address, const AnsiString &address1Column, const AnsiString &address2Column) const
{
statement.AddColumnInt64(address1Column, address.GetAddress1());
if (address.GetType() == IPAddress::IPV6)
statement.AddColumnInt64(address2Column, address.GetAddress2());
else
statement.AddColumnNULL(address2Column);
}
/** @brief Connects to a server on a given ip and port.
* @param ip The IP address to connect to.
* @param port The port number.
*/
void Jatta::Network::SocketTCP::Connect(const IPAddress& ip, unsigned short port)
{
// Check that the IP is valid
if (!ip.IsValid())
{
throw NetworkException(NetworkExceptionCode::FAILED_CONNECT, NetworkExceptionReason::ADDRESS_INVALID);
}
// Create a hints variable used to determine the connection configuration.
struct addrinfo hints;
memset(&hints, 0, sizeof(addrinfo));
// Check if the IP is an IPv4 or IPv6.
if (ip.GetType() == IPAddressType::IPV4)
{
// Use IPv4.
hints.ai_family = AF_INET;
}
else
{
// Use IPv6.
hints.ai_family = AF_INET6;
}
// We're setting up a TCP/IP connection, which is a STREAM socket.
hints.ai_socktype = SOCK_STREAM;
// Convert the port into a string.
char portString[6];
# ifdef MSVC
sprintf_s(portString, "%d", port);
# else
sprintf(portString, "%d", port);
# endif
// Get the address info using the hints.
addrinfo* result;
if (getaddrinfo(ip.ToString().GetCString(), portString, &hints, &result) != 0)
{
throw NetworkException(NetworkExceptionCode::FAILED_CONNECT, NetworkExceptionReason::NO_NETWORK_INTERFACE);
}
// Create the socket. Because our hints are so strict, we don't have to worry about looping
// through the linked list. We should be able to trust that the first result is what we want.
sock = socket(result->ai_family, result->ai_socktype, result->ai_protocol);
if (sock == INVALID_SOCKET)
{
freeaddrinfo(result);
throw NetworkException(NetworkExceptionCode::FAILED_CONNECT, NetworkExceptionReason::FAILED_CREATE_SOCKET);
}
// Make the connection.
if (::connect(sock, result->ai_addr, result->ai_addrlen) == SOCKET_ERROR)
{
freeaddrinfo(result);
Close();
throw NetworkException(NetworkExceptionCode::FAILED_CONNECT, NetworkExceptionReason::FAILED_CONNECT_CALL);
}
// Make a non-blocking socket.
if (!MakeNonBlocking())
{
freeaddrinfo(result);
Close();
throw NetworkException(NetworkExceptionCode::FAILED_CONNECT, NetworkExceptionReason::FAILED_NONBLOCKING);
}
// Turn off the Nagle Algorithm to increase speed.
if (!MakeNoDelay())
{
freeaddrinfo(result);
Close();
throw NetworkException(NetworkExceptionCode::FAILED_CONNECT, NetworkExceptionReason::FAILED_NO_DELAY);
}
// Free up the address info linked list.
freeaddrinfo(result);
}
