From a6ed9109339fb6b5433c8641ccb3736ad1646fc0 Mon Sep 17 00:00:00 2001
From: "." <.@.>
Date: Sun, 8 May 2016 13:29:20 +1200
Subject: [PATCH] support bad USER/NICK order for Lite IRC, set realname as the
 nmdc description

--HG--
branch : nmdc-ircfrontend
---
 COMPATIBILITY.txt |  1 +
 server.go         | 17 ++++++++++++++---
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/COMPATIBILITY.txt b/COMPATIBILITY.txt
index aeef6b3..14d27b2 100644
--- a/COMPATIBILITY.txt
+++ b/COMPATIBILITY.txt
@@ -23,6 +23,7 @@ Unusable:
 		2016/05/07 22:57:04  <<< :Your nickname is already being used KILL  A
 		2016/05/07 22:57:04  >>> 'NICK' [pineapple420]
 		2016/05/07 22:57:04 Broken loop.
+	- some patches in place, needs retesting
 	Yaaic/Atomic
 	- doesn't properly understand/parse the room join
 	Atomic
diff --git a/server.go b/server.go
index afd2084..7ac0fae 100644
--- a/server.go
+++ b/server.go
@@ -306,6 +306,11 @@ func (s *Server) handleCommand(command string, args []string) {
 		if s.upstreamLauncher.Self.Nick == "" {
 			// allow set, as part of the login phase
 			s.upstreamLauncher.Self.Nick = args[0]
+
+		} else if args[0] == s.upstreamLauncher.Self.Nick {
+			// Ignore
+			// Required for compatibility with Lite IRC, which sends USER/NICK in the wrong order
+
 		} else {
 			s.reply(rplKill, "Can't change nicks on this server", "")
 			s.DisconnectClient()
@@ -322,9 +327,15 @@ func (s *Server) handleCommand(command string, args []string) {
 		}
 
 		if s.upstreamLauncher.Self.Nick == "" {
-			s.reply(rplKill, "Your nickname is already being used", "")
-			s.DisconnectClient()
-			return
+			// Whatever, treat it as a NICK call (non-strict client handshake) and take the username field to be the intended nick
+			// This will allow Lite IRC's bad handshake to log in (as long as the username and the nickname are the same)
+			s.upstreamLauncher.Self.Nick = args[0]
+		}
+
+		// Use the client's {real name} field as an NMDC {description}
+		if len(args) >= 4 && len(args[3]) > 0 && args[3][0] == ':' {
+			realName := strings.Join(args[3:], " ")[1:]
+			s.upstreamLauncher.Self.Description = realName
 		}
 
 		s.reply(rplWelcome)