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author | Diva Canto | 2010-07-30 14:04:13 -0700 |
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committer | Diva Canto | 2010-07-30 14:04:13 -0700 |
commit | 8ab7d80b093de2e2ed71737e0138b7a7c2c92f99 (patch) | |
tree | 7036b62efbbf2d0cf7d98f37f4a18d53d95263d4 /OpenSim/Framework/NetworkUtil.cs | |
parent | * Added debug logging to SimianGrid inventory service response parsing (diff) | |
download | opensim-SC-8ab7d80b093de2e2ed71737e0138b7a7c2c92f99.zip opensim-SC-8ab7d80b093de2e2ed71737e0138b7a7c2c92f99.tar.gz opensim-SC-8ab7d80b093de2e2ed71737e0138b7a7c2c92f99.tar.bz2 opensim-SC-8ab7d80b093de2e2ed71737e0138b7a7c2c92f99.tar.xz |
Changed the way HG client verification is done: now transforming local and LAN client IPs into external IPs. This addresses some issues related to running both the user agents service and the viewer in the same machine/LAN, which then presents a problem when the user agent goes to an external network.
Diffstat (limited to 'OpenSim/Framework/NetworkUtil.cs')
-rw-r--r-- | OpenSim/Framework/NetworkUtil.cs | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/OpenSim/Framework/NetworkUtil.cs b/OpenSim/Framework/NetworkUtil.cs index 5fe343d..7c30bd3 100644 --- a/OpenSim/Framework/NetworkUtil.cs +++ b/OpenSim/Framework/NetworkUtil.cs | |||
@@ -31,6 +31,7 @@ using System.Net.Sockets; | |||
31 | using System.Net; | 31 | using System.Net; |
32 | using System.Net.NetworkInformation; | 32 | using System.Net.NetworkInformation; |
33 | using System.Reflection; | 33 | using System.Reflection; |
34 | using System.Text; | ||
34 | using log4net; | 35 | using log4net; |
35 | 36 | ||
36 | namespace OpenSim.Framework | 37 | namespace OpenSim.Framework |
@@ -180,10 +181,14 @@ namespace OpenSim.Framework | |||
180 | throw new ArgumentException("[NetworkUtil] Unable to resolve defaultHostname to an IPv4 address for an IPv4 client"); | 181 | throw new ArgumentException("[NetworkUtil] Unable to resolve defaultHostname to an IPv4 address for an IPv4 client"); |
181 | } | 182 | } |
182 | 183 | ||
184 | static IPAddress externalIPAddress; | ||
185 | |||
183 | static NetworkUtil() | 186 | static NetworkUtil() |
184 | { | 187 | { |
185 | try | 188 | try |
186 | { | 189 | { |
190 | externalIPAddress = GetExternalIP(); | ||
191 | |||
187 | foreach (NetworkInterface ni in NetworkInterface.GetAllNetworkInterfaces()) | 192 | foreach (NetworkInterface ni in NetworkInterface.GetAllNetworkInterfaces()) |
188 | { | 193 | { |
189 | foreach (UnicastIPAddressInformation address in ni.GetIPProperties().UnicastAddresses) | 194 | foreach (UnicastIPAddressInformation address in ni.GetIPProperties().UnicastAddresses) |
@@ -244,5 +249,72 @@ namespace OpenSim.Framework | |||
244 | } | 249 | } |
245 | return defaultHostname; | 250 | return defaultHostname; |
246 | } | 251 | } |
252 | |||
253 | public static IPAddress GetExternalIPOf(IPAddress user) | ||
254 | { | ||
255 | // Check if we're accessing localhost. | ||
256 | foreach (IPAddress host in Dns.GetHostAddresses(Dns.GetHostName())) | ||
257 | { | ||
258 | if (host.Equals(user) && host.AddressFamily == AddressFamily.InterNetwork) | ||
259 | { | ||
260 | m_log.Info("[NetworkUtil] Localhost user detected, sending '" + externalIPAddress + "' instead of '" + user + "'"); | ||
261 | return externalIPAddress; | ||
262 | } | ||
263 | } | ||
264 | |||
265 | // Check for same LAN segment | ||
266 | foreach (KeyValuePair<IPAddress, IPAddress> subnet in m_subnets) | ||
267 | { | ||
268 | byte[] subnetBytes = subnet.Value.GetAddressBytes(); | ||
269 | byte[] localBytes = subnet.Key.GetAddressBytes(); | ||
270 | byte[] destBytes = user.GetAddressBytes(); | ||
271 | |||
272 | if (subnetBytes.Length != destBytes.Length || subnetBytes.Length != localBytes.Length) | ||
273 | return user; | ||
274 | |||
275 | bool valid = true; | ||
276 | |||
277 | for (int i = 0; i < subnetBytes.Length; i++) | ||
278 | { | ||
279 | if ((localBytes[i] & subnetBytes[i]) != (destBytes[i] & subnetBytes[i])) | ||
280 | { | ||
281 | valid = false; | ||
282 | break; | ||
283 | } | ||
284 | } | ||
285 | |||
286 | if (subnet.Key.AddressFamily != AddressFamily.InterNetwork) | ||
287 | valid = false; | ||
288 | |||
289 | if (valid) | ||
290 | { | ||
291 | m_log.Info("[NetworkUtil] Local LAN user detected, sending '" + externalIPAddress + "' instead of '" + user + "'"); | ||
292 | return externalIPAddress; | ||
293 | } | ||
294 | } | ||
295 | |||
296 | // Otherwise, return user address | ||
297 | return user; | ||
298 | } | ||
299 | |||
300 | private static IPAddress GetExternalIP() | ||
301 | { | ||
302 | string whatIsMyIp = "http://www.whatismyip.com/automation/n09230945.asp"; | ||
303 | WebClient wc = new WebClient(); | ||
304 | UTF8Encoding utf8 = new UTF8Encoding(); | ||
305 | string requestHtml = ""; | ||
306 | try | ||
307 | { | ||
308 | requestHtml = utf8.GetString(wc.DownloadData(whatIsMyIp)); | ||
309 | } | ||
310 | catch (WebException we) | ||
311 | { | ||
312 | // do something with exception | ||
313 | m_log.Info("[NetworkUtil]: Exception in GetExternalIP: " + we.ToString()); | ||
314 | } | ||
315 | |||
316 | IPAddress externalIp = IPAddress.Parse(requestHtml); | ||
317 | return externalIp; | ||
318 | } | ||
247 | } | 319 | } |
248 | } | 320 | } |