From 6129f2e4a0c3bd50c3f9ff62c7dfd0b27ecdcc7f Mon Sep 17 00:00:00 2001
From: brain <brain@e03df62e-2008-0410-955e-edbf42e46eb7>
Date: Thu, 22 Apr 2004 19:34:06 +0000
Subject: Added more services stuff Added support for OnUserPreNick API command
 (used with qlines, etc)

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@696 e03df62e-2008-0410-955e-edbf42e46eb7
---
 include/modules.h   |  9 +++++++++
 src/InspIRCd.layout | 28 ++++++++++++++--------------
 src/commands.cpp    | 22 ++++++++++++++++++++++
 src/inspircd.cpp    |  8 ++++++++
 src/modules.cpp     |  1 +
 5 files changed, 54 insertions(+), 14 deletions(-)

diff --git a/include/modules.h b/include/modules.h
index 20fb5f04d..cf5d87f6f 100644
--- a/include/modules.h
+++ b/include/modules.h
@@ -230,6 +230,15 @@ class Module : public classbase
 	 * of where the message is destined to be sent.
 	 */
 	virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string text);
+	
+	/** Called before any nickchange, local or remote. This can be used to implement Q-lines etc.
+	 * Please note that although you can see remote nickchanges through this function, you should
+	 * NOT make any changes to the userrec if the user is a remote user as this may cause a desnyc.
+	 * check user->server before taking any action (including returning nonzero from the method).
+	 * If your method returns nonzero, the nickchange is silently forbidden, and it is down to your
+	 * module to generate some meaninful output.
+	 */
+	virtual int OnUserPreNick(userrec* user, std::string newnick);
 };
 
 
diff --git a/src/InspIRCd.layout b/src/InspIRCd.layout
index 40f21b210..d72cb0f4e 100644
--- a/src/InspIRCd.layout
+++ b/src/InspIRCd.layout
@@ -13,9 +13,9 @@ LeftChar=1
 [Editor_1]
 Open=1
 Top=0
-CursorCol=1
-CursorRow=1
-TopLine=1
+CursorCol=2
+CursorRow=1821
+TopLine=1767
 LeftChar=1
 
 [Editor_2]
@@ -37,9 +37,9 @@ LeftChar=1
 [Editor_4]
 Open=1
 Top=0
-CursorCol=1
-CursorRow=364
-TopLine=333
+CursorCol=62
+CursorRow=128
+TopLine=77
 LeftChar=1
 
 [Editor_5]
@@ -163,11 +163,11 @@ TopLine=1
 LeftChar=1
 
 [Editor_20]
-Open=0
+Open=1
 Top=0
-CursorCol=32
-CursorRow=30
-TopLine=573
+CursorCol=5
+CursorRow=240
+TopLine=197
 LeftChar=1
 
 [Editor_21]
@@ -314,7 +314,7 @@ CursorRow=10
 TopLine=1
 LeftChar=1
 [Editor_41]
-Open=0
+Open=1
 Top=0
 CursorCol=22
 CursorRow=13
@@ -330,9 +330,9 @@ LeftChar=1
 [Editor_43]
 Open=1
 Top=1
-CursorCol=45
-CursorRow=2189
-TopLine=2153
+CursorCol=12
+CursorRow=1678
+TopLine=1651
 LeftChar=1
 [Editor_44]
 Open=1
diff --git a/src/commands.cpp b/src/commands.cpp
index f8a410dc8..3adf3fc33 100644
--- a/src/commands.cpp
+++ b/src/commands.cpp
@@ -1374,6 +1374,13 @@ void handle_nick(char **parameters, int pcnt, userrec *user)
 
 	if (user->registered == 7)
 	{
+		int MOD_RESULT = 0;
+		FOREACH_RESULT(OnUserPreNick(user,parameters[0]));
+		if (MOD_RESULT) {
+			// if a module returns true, the nick change is silently forbidden.
+			return;
+		}
+
 		WriteCommon(user,"NICK %s",parameters[0]);
 		
 		// Q token must go to ALL servers!!!
@@ -1664,6 +1671,14 @@ void handle_n(char token,char* params,serverrec* source,serverrec* reply, char*
 		WriteCommon(user,"NICK %s",newnick);
 		if (is_uline(tcp_host))
 		{
+			int MOD_RESULT = 0;
+			FOREACH_RESULT(OnUserPreNick(user,newnick));
+			if (MOD_RESULT) {
+				// if a module returns true, the nick change couldnt be allowed
+				kill_link(user,"Nickname collision");
+				return;
+			}
+	
 			// broadcast this because its a services thingy
 			char buffer[MAXBUF];
 			snprintf(buffer,MAXBUF,"n %s %s",user->nick,newnick);
@@ -2148,6 +2163,13 @@ void process_restricted_commands(char token,char* params,serverrec* source,serve
 
 void handle_link_packet(char* udp_msg, char* tcp_host, serverrec *serv)
 {
+	if ((!strncmp(udp_msg,"USER ",5)) || (!strncmp(udp_msg,"NICK ",5)))
+	{
+		// a user on a server port, just close their connection.
+		RemoveServer(tcp_host);
+		return;
+	}
+
 	char response[10240];
 	char token = udp_msg[0];
 	char* old = udp_msg;
diff --git a/src/inspircd.cpp b/src/inspircd.cpp
index f55a6f1b6..80909b312 100644
--- a/src/inspircd.cpp
+++ b/src/inspircd.cpp
@@ -2356,7 +2356,15 @@ long map_count(const char* s)
 void force_nickchange(userrec* user,const char* newnick)
 {
 	char nick[MAXBUF];
+	int MOD_RESULT = 0;
+	
 	strcpy(nick,"");
+
+	FOREACH_RESULT(OnUserPreNick(user,newnick));
+	if (MOD_RESULT) {
+		kill_link(user,"Nickname collision");
+		return;
+	}
 	
 	if (user)
 	{
diff --git a/src/modules.cpp b/src/modules.cpp
index 59833b6bd..1c37dd0cb 100644
--- a/src/modules.cpp
+++ b/src/modules.cpp
@@ -125,6 +125,7 @@ void Module::OnInfo(userrec* user) { };
 void Module::OnWhois(userrec* source, userrec* dest) { };
 int Module::OnUserPreMessage(userrec* user,void* dest,int target_type, std::string text) { return 0; };
 int Module::OnUserPreNotice(userrec* user,void* dest,int target_type, std::string text) { return 0; };
+int Module::OnUserPreNick(userrec* user, std::string newnick) { return 0; };
 
 // server is a wrapper class that provides methods to all of the C-style
 // exports in the core
-- 
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