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Finished implementing ViaLogin vs ViaHGLogin. Removed lookup on myipaddress.com. Also removed client IP verification upon UDP connection that had been left there -- we can't do that in general.

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This commit is contained in:
Diva Canto
2010-08-19 19:54:40 -07:00
parent 1955b79759
commit a39ea07158
4 changed files with 48 additions and 119 deletions
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82
OpenSim/Framework/NetworkUtil.cs
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@@ -181,16 +181,8 @@ namespace OpenSim.Framework
throw new ArgumentException("[NetworkUtil] Unable to resolve defaultHostname to an IPv4 address for an IPv4 client");
}
static IPAddress externalIPAddress;
static NetworkUtil()
{
try
{
externalIPAddress = GetExternalIP();
}
catch { /* ignore */ }
try
{
foreach (NetworkInterface ni in NetworkInterface.GetAllNetworkInterfaces())
@@ -254,79 +246,5 @@ namespace OpenSim.Framework
return defaultHostname;
}
public static IPAddress GetExternalIPOf(IPAddress user)
{
if (externalIPAddress == null)
return user;
if (user.ToString() == "127.0.0.1")
{
m_log.Info("[NetworkUtil] 127.0.0.1 user detected, sending '" + externalIPAddress + "' instead of '" + user + "'");
return externalIPAddress;
}
// Check if we're accessing localhost.
foreach (IPAddress host in Dns.GetHostAddresses(Dns.GetHostName()))
{
if (host.Equals(user) && host.AddressFamily == AddressFamily.InterNetwork)
{
m_log.Info("[NetworkUtil] Localhost user detected, sending '" + externalIPAddress + "' instead of '" + user + "'");
return externalIPAddress;
}
}
// Check for same LAN segment
foreach (KeyValuePair<IPAddress, IPAddress> subnet in m_subnets)
{
byte[] subnetBytes = subnet.Value.GetAddressBytes();
byte[] localBytes = subnet.Key.GetAddressBytes();
byte[] destBytes = user.GetAddressBytes();
if (subnetBytes.Length != destBytes.Length || subnetBytes.Length != localBytes.Length)
return user;
bool valid = true;
for (int i = 0; i < subnetBytes.Length; i++)
{
if ((localBytes[i] & subnetBytes[i]) != (destBytes[i] & subnetBytes[i]))
{
valid = false;
break;
}
}
if (subnet.Key.AddressFamily != AddressFamily.InterNetwork)
valid = false;
if (valid)
{
m_log.Info("[NetworkUtil] Local LAN user detected, sending '" + externalIPAddress + "' instead of '" + user + "'");
return externalIPAddress;
}
}
// Otherwise, return user address
return user;
}
private static IPAddress GetExternalIP()
{
string whatIsMyIp = "http://www.whatismyip.com/automation/n09230945.asp";
WebClient wc = new WebClient();
UTF8Encoding utf8 = new UTF8Encoding();
string requestHtml = "";
try
{
requestHtml = utf8.GetString(wc.DownloadData(whatIsMyIp));
}
catch (WebException we)
{
m_log.Info("[NetworkUtil]: Exception in GetExternalIP: " + we.ToString());
return null;
}
IPAddress externalIp = IPAddress.Parse(requestHtml);
return externalIp;
}
}
}