From fda6dce872739cfa42e21ff9338e6434b87cfdb4 Mon Sep 17 00:00:00 2001
From: Timo Sirainen <cras@irssi.org>
Date: Mon, 10 May 2004 13:45:27 +0000
Subject: [PATCH] Never send hostname beginning with /+-[0-9]/ in USER command,
 that could be interpreted as mode change with ircnet ircd.

git-svn-id: http://svn.irssi.org/repos/irssi/trunk@3249 dbcabf3a-b0e7-0310-adc4-f8d773084564
---
 src/irc/core/irc-servers.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/irc/core/irc-servers.c b/src/irc/core/irc-servers.c
index 235af039..b7247149 100644
--- a/src/irc/core/irc-servers.c
+++ b/src/irc/core/irc-servers.c
@@ -146,6 +146,16 @@ static void server_init(IRC_SERVER_REC *server)
 		if (*ptr == ':') *ptr = '_';
 	}
 
+	/* don't allow hostname to begin with number or '+', '-'. those
+	   can be interpreted as ircnet ircd's mode parameter.
+
+	   username/hostname parameters should probably be configurable since
+	   they're only needed with some old servers which uses them to count
+	   unique users. */
+	if ((hostname[0] >= '0' && hostname[0] <= '9') ||
+	    hostname[0] == '+' || hostname[0] == '-')
+		hostname[0] = '_';
+
 	username = g_strdup(conn->username);
 	ptr = strchr(username, ' ');
 	if (ptr != NULL) *ptr = '\0';