From a9682a795a548eee1db19f424f1cb1ef236538dd Mon Sep 17 00:00:00 2001
From: brain <brain@e03df62e-2008-0410-955e-edbf42e46eb7>
Date: Fri, 16 Apr 2004 14:16:13 +0000
Subject: Added some netsplit handling stuff (untested)

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@613 e03df62e-2008-0410-955e-edbf42e46eb7
---
 src/InspIRCd.layout | 20 ++++++++++----------
 src/connection.cpp  |  6 +++++-
 src/inspircd.cpp    | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 67 insertions(+), 11 deletions(-)

diff --git a/src/InspIRCd.layout b/src/InspIRCd.layout
index 2eaa73694..99229762d 100644
--- a/src/InspIRCd.layout
+++ b/src/InspIRCd.layout
@@ -1,5 +1,5 @@
 [Editors]
-Focused=24
+Focused=1
 Order=1,2,4,6,3,7,25,5,24,-1
 
 [Editor_0]
@@ -12,10 +12,10 @@ LeftChar=1
 
 [Editor_1]
 Open=1
-Top=0
-CursorCol=1
-CursorRow=6463
-TopLine=6433
+Top=1
+CursorCol=11
+CursorRow=6564
+TopLine=6517
 LeftChar=1
 
 [Editor_2]
@@ -196,11 +196,11 @@ LeftChar=1
 
 [Editor_24]
 Open=1
-Top=1
-CursorCol=2
-CursorRow=306
-TopLine=264
-LeftChar=1
+Top=0
+CursorCol=40
+CursorRow=356
+TopLine=303
+LeftChar=8
 [Editor_25]
 Open=1
 Top=0
diff --git a/src/connection.cpp b/src/connection.cpp
index a4818cad7..a36e9a1df 100644
--- a/src/connection.cpp
+++ b/src/connection.cpp
@@ -323,6 +323,7 @@ void ircd_connector::SetDescriptor(int fd)
 bool connection::SendPacket(char *message, const char* host)
 {
 	ircd_connector* cn = this->FindHost(host);
+	
 	if (!strchr(message,'\n'))
 	{
 		strncat(message,"\n",MAXBUF);
@@ -351,7 +352,10 @@ bool connection::SendPacket(char *message, const char* host)
 					}
 				}
 			}
-			log(DEBUG,"ERROR: Main route to %s is down and there are no possible routes to this server!",host);
+			char buffer[MAXBUF];
+			snprintf(buffer,MAXBUF,"& %s",host);
+			NetSendToAll(buffer);
+			log(DEBUG,"There are no routes to %s, we're gonna boot the server off!",host);
 			return false;
 		}
 
diff --git a/src/inspircd.cpp b/src/inspircd.cpp
index f178a9f0b..92ebb4771 100644
--- a/src/inspircd.cpp
+++ b/src/inspircd.cpp
@@ -6520,6 +6520,53 @@ void handle_dollar(char token,char* params,serverrec* source,serverrec* reply, c
 	log(DEBUG,"Warning! routing table received from nonexistent server!");
 }
 
+void handle_amp(char token,char* params,serverrec* source,serverrec* reply, char* udp_host)
+{
+	log(DEBUG,"Netsplit! %s split from mesh, removing!",params);
+	bool go_again = true;
+	while (go_again)
+	{
+		go_again = false;
+		for (int i = 0; i < 32; i++)
+		{
+			if (me[i] != NULL)
+			{
+				for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
+				{
+					if (!strcasecmp(j->GetServerName().c_str(),params))
+					{
+						j->routes.clear();
+						j->CloseConnection();
+						me[i]->connectors.erase(j);
+						go_again = true;
+						break;
+					}
+				}
+			}
+		}
+	}
+	log(DEBUG,"Removed server. Will remove clients...");
+	// iterate through the userlist and remove all users on this server.
+	// because we're dealing with a mesh, we dont have to deal with anything
+	// "down-route" from this server (nice huh)
+	go_again = true;
+	char reason[MAXBUF];
+	snprintf(reason,MAXBUF,"%s %s",ServerName,params);
+	while (go_again)
+	{
+		go_again = false;
+		for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
+		{
+			if (!strcasecmp(u->second->server,params))
+			{
+				kill_link(u->second,reason);
+				go_again = true;
+				break;
+			}
+		}
+	}
+}
+
 
 void process_restricted_commands(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,char* ipaddr,int port)
 {
@@ -6560,6 +6607,11 @@ void process_restricted_commands(char token,char* params,serverrec* source,serve
 		case '$':
 			handle_dollar(token,params,source,reply,udp_host);
 		break;
+		// node unreachable - we cant route to a server, sooooo we slit it off.
+		// servers can generate these for themselves for an squit.
+		case '&':
+			handle_amp(token,params,source,reply,udp_host);
+		break;
 		// R <server> <data>
 		// redirect token, send all of <data> along to the given 
 		// server as this server has been found to still have a route to it
-- 
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