Check DHCP interfaces every 6 hours for dhclient issues. Launch dhclient if it is not bound to an interface correctly.

2 files changed, 56 insertions, 0 deletions

diff --git a/etc/crontab b/etc/crontab
index 556827d..c83ebb3 100644
--- a/etc/crontab
+++ b/etc/crontab
@@ -10,3 +10,5 @@ HOME=/var/log
 */5		 *	 	*	 	*	 	*	 	root	 /usr/bin/nice -n20 /etc/ping_hosts.sh
 */60	 *	 	*	 	*	 	*	 	root	 /usr/bin/nice -n20 /usr/local/sbin/expiretable -v -t 3600 virusprot
 */60	 *	 	*	 	*	 	* 	 	root	 /usr/bin/nice -n20 /usr/local/sbin/expiretable -t 1800 snort2c
+*/60	 *	 	*	 	*	 	* 	 	root	 /usr/bin/nice -n20 /usr/local/sbin/expiretable -t 1800 snort2c
+*/360	 *	 	*	 	*	 	* 	 	root	 /usr/bin/nice -n20 /etc/rc.dhclient_cron
diff --git a/etc/rc.dhclient_cron b/etc/rc.dhclient_cron
new file mode 100644
index 0000000..77254ec
--- /dev/null
+++ b/etc/rc.dhclient_cron
@@ -0,0 +1,54 @@
+#!/usr/local/bin/php -f
+<?php
+/* $Id$ */
+/*
+    rc.dhclient_cron
+    part of pfSense (http://www.pfSense.com)
+    Copyright (C) 2006 Scott Ullrich
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are met:
+
+    1. Redistributions of source code must retain the above copyright notice,
+       this list of conditions and the following disclaimer.
+
+    2. Redistributions in binary form must reproduce the above copyright
+       notice, this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+    INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+    AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+    AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+    POSSIBILITY OF SUCH DAMAGE.
+*/
+
+require_once("config.inc");
+require_once("functions.inc");
+require_once("filter.inc");
+require_once("interfaces.inc");
+
+/* invalidate cache */
+vc_invalidate();
+
+unlink_if_exists("/tmp/config.cache");
+
+foreach($config['interfaces'] as $interface) {
+	$real_interface = $interface['if'];
+	if($interface['ipaddr'] == "dhcp") {
+		$pid = find_dhclient_process($real_interface);
+		if($pid == 0 or !$pid) {	
+			/* dhclient is not running for interface, kick it */
+			log_error("DHCLIENT was not running for {$real_interface} ... Launching new instance.");
+			exec("/sbin/dhclient $real_interface");
+		}
+	}
+}
+
+?>
\ No newline at end of file