From 6894e8923b652638d94e55ffbbafe8a77badf612 Mon Sep 17 00:00:00 2001
From: Alexandre Oliveira <rockytvbr@gmail.com>
Date: Wed, 20 Dec 2017 13:24:54 -0200
Subject: [PATCH] Add support for chghost cap

---
 ChatSharp/Handlers/MessageHandlers.cs |  1 +
 ChatSharp/Handlers/UserHandlers.cs    | 17 +++++++++++++++++
 ChatSharp/IrcClient.cs                |  2 +-
 3 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/ChatSharp/Handlers/MessageHandlers.cs b/ChatSharp/Handlers/MessageHandlers.cs
index 26c6a6b..8025944 100644
--- a/ChatSharp/Handlers/MessageHandlers.cs
+++ b/ChatSharp/Handlers/MessageHandlers.cs
@@ -48,6 +48,7 @@ namespace ChatSharp.Handlers
             client.SetHandler("330", UserHandlers.HandleWhoIsLoggedInAs);
             client.SetHandler("354", UserHandlers.HandleWhox);
             client.SetHandler("ACCOUNT", UserHandlers.HandleAccount);
+            client.SetHandler("CHGHOST", UserHandlers.HandleChangeHost);
 
             // Listing handlers
             client.SetHandler("367", ListingHandlers.HandleBanListPart);
diff --git a/ChatSharp/Handlers/UserHandlers.cs b/ChatSharp/Handlers/UserHandlers.cs
index c8be1b0..f56505d 100644
--- a/ChatSharp/Handlers/UserHandlers.cs
+++ b/ChatSharp/Handlers/UserHandlers.cs
@@ -204,5 +204,22 @@ namespace ChatSharp.Handlers
             var user = client.Users.GetOrAdd(message.Prefix);
             user.Account = message.Parameters[0];
         }
+
+        public static void HandleChangeHost(IrcClient client, IrcMessage message)
+        {
+            var user = client.Users.Get(message.Prefix);
+
+            // Only handle CHGHOST for users we know
+            if (user != null)
+            {
+                var newIdent = message.Parameters[0];
+                var newHostname = message.Parameters[1];
+
+                if (user.User != newIdent)
+                    user.User = newIdent;
+                if (user.Hostname != newHostname)
+                    user.Hostname = newHostname;
+            }
+        }
     }
 }
diff --git a/ChatSharp/IrcClient.cs b/ChatSharp/IrcClient.cs
index de17a8e..b222d47 100644
--- a/ChatSharp/IrcClient.cs
+++ b/ChatSharp/IrcClient.cs
@@ -169,7 +169,7 @@ namespace ChatSharp
             // List of supported capabilities
             Capabilities.AddRange(new string[] {
                 "server-time", "multi-prefix", "cap-notify", "znc.in/server-time", "znc.in/server-time-iso",
-                "account-notify"
+                "account-notify", "chghost"
             });
 
             IsNegotiatingCapabilities = false;