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Merge branch 'master' into careminster

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Conflicts:
	OpenSim/Framework/Servers/HttpServer/PollServiceRequestManager.cs
	OpenSim/Region/CoreModules/Avatar/Attachments/AttachmentsModule.cs
	OpenSim/Services/Connectors/Neighbour/NeighbourServicesConnector.cs
This commit is contained in:
Melanie
2013-08-17 03:23:45 +01:00
parent df7a1e68f6 85a9cb260a
commit bef03fb30b
28 changed files with 417 additions and 172 deletions
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90
OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
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@@ -106,6 +106,32 @@ namespace OpenSim.Region.ClientStack.LindenUDP
stat => stat.Value = m_udpServer.IncomingPacketsProcessed,
StatVerbosity.Debug));
StatsManager.RegisterStat(
new Stat(
"IncomingPacketsMalformedCount",
"Number of inbound UDP packets that could not be recognized as LL protocol packets.",
"",
"",
"clientstack",
scene.Name,
StatType.Pull,
MeasuresOfInterest.AverageChangeOverTime,
stat => stat.Value = m_udpServer.IncomingMalformedPacketCount,
StatVerbosity.Info));
StatsManager.RegisterStat(
new Stat(
"IncomingPacketsOrphanedCount",
"Number of inbound packets that were not initial connections packets and could not be associated with a viewer.",
"",
"",
"clientstack",
scene.Name,
StatType.Pull,
MeasuresOfInterest.AverageChangeOverTime,
stat => stat.Value = m_udpServer.IncomingOrphanedPacketCount,
StatVerbosity.Info));
StatsManager.RegisterStat(
new Stat(
"OutgoingUDPSendsCount",
@@ -272,7 +298,15 @@ namespace OpenSim.Region.ClientStack.LindenUDP
public Socket Server { get { return null; } }
private int m_malformedCount = 0; // Guard against a spamming attack
/// <summary>
/// Record how many inbound packets could not be recognized as LLUDP packets.
/// </summary>
public int IncomingMalformedPacketCount { get; private set; }
/// <summary>
/// Record how many inbound packets could not be associated with a simulator circuit.
/// </summary>
public int IncomingOrphanedPacketCount { get; private set; }
/// <summary>
/// Record current outgoing client for monitoring purposes.
@@ -1193,6 +1227,19 @@ namespace OpenSim.Region.ClientStack.LindenUDP
outgoingPacket.TickCount = Environment.TickCount & Int32.MaxValue;
}
private void RecordMalformedInboundPacket(IPEndPoint endPoint)
{
// if (m_malformedCount < 100)
// m_log.DebugFormat("[LLUDPSERVER]: Dropped malformed packet: " + e.ToString());
IncomingMalformedPacketCount++;
if ((IncomingMalformedPacketCount % 10000) == 0)
m_log.WarnFormat(
"[LLUDPSERVER]: Received {0} malformed packets so far, probable network attack. Last was from {1}",
IncomingMalformedPacketCount, endPoint);
}
public override void PacketReceived(UDPPacketBuffer buffer)
{
// Debugging/Profiling
@@ -1214,6 +1261,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
// "[LLUDPSERVER]: Dropping undersized packet with {0} bytes received from {1} in {2}",
// buffer.DataLength, buffer.RemoteEndPoint, m_scene.RegionInfo.RegionName);
RecordMalformedInboundPacket(endPoint);
return; // Drop undersized packet
}
@@ -1232,6 +1281,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
// "[LLUDPSERVER]: Dropping packet with malformed header received from {0} in {1}",
// buffer.RemoteEndPoint, m_scene.RegionInfo.RegionName);
RecordMalformedInboundPacket(endPoint);
return; // Malformed header
}
@@ -1247,34 +1298,23 @@ namespace OpenSim.Region.ClientStack.LindenUDP
// Only allocate a buffer for zerodecoding if the packet is zerocoded
((buffer.Data[0] & Helpers.MSG_ZEROCODED) != 0) ? new byte[4096] : null);
}
catch (MalformedDataException)
{
}
catch (IndexOutOfRangeException)
{
// m_log.WarnFormat(
// "[LLUDPSERVER]: Dropping short packet received from {0} in {1}",
// buffer.RemoteEndPoint, m_scene.RegionInfo.RegionName);
return; // Drop short packet
}
catch (Exception e)
{
if (m_malformedCount < 100)
if (IncomingMalformedPacketCount < 100)
m_log.DebugFormat("[LLUDPSERVER]: Dropped malformed packet: " + e.ToString());
m_malformedCount++;
if ((m_malformedCount % 100000) == 0)
m_log.DebugFormat("[LLUDPSERVER]: Received {0} malformed packets so far, probable network attack.", m_malformedCount);
}
// Fail-safe check
if (packet == null)
{
m_log.ErrorFormat("[LLUDPSERVER]: Malformed data, cannot parse {0} byte packet from {1}:",
buffer.DataLength, buffer.RemoteEndPoint);
m_log.Error(Utils.BytesToHexString(buffer.Data, buffer.DataLength, null));
if (IncomingMalformedPacketCount < 100)
{
m_log.WarnFormat("[LLUDPSERVER]: Malformed data, cannot parse {0} byte packet from {1}, data {2}:",
buffer.DataLength, buffer.RemoteEndPoint, Utils.BytesToHexString(buffer.Data, buffer.DataLength, null));
}
RecordMalformedInboundPacket(endPoint);
return;
}
@@ -1337,6 +1377,14 @@ namespace OpenSim.Region.ClientStack.LindenUDP
if (client == null || !(client is LLClientView))
{
//m_log.Debug("[LLUDPSERVER]: Received a " + packet.Type + " packet from an unrecognized source: " + address + " in " + m_scene.RegionInfo.RegionName);
IncomingOrphanedPacketCount++;
if ((IncomingOrphanedPacketCount % 10000) == 0)
m_log.WarnFormat(
"[LLUDPSERVER]: Received {0} orphaned packets so far. Last was from {1}",
IncomingOrphanedPacketCount, endPoint);
return;
}