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315373b8
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Scott Ullrich
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<?php
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307cd525
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Bill Marquette
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/* $Id$ */
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315373b8
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Scott Ullrich
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/*
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lb.php
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part of pfSense (www.pfSense.com)
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Copyright (C) 2005 Chris Dionissopoulos <chdio@bug.gr>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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global config data
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~~~~~~~~~~~~~~~~~~
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['lb'] --> unique,required
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['lb']['enable'] --> unique , required, int(0|1)
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['lb']['gateway'] --> ARRAY , optional
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['lb']['gateway']['enable'] --> unique , required, int(0|1)
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['lb']['gateway']['state'] --> unique , required, int(0|1)
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['lb']['gateway']['gateway'] --> unique , required, string
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['lb']['gateway']['monitor'] --> unique , required, string
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['lb']['gateway']['weight'] --> unique , required, int(1..10)
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['lb']['gateway']['default'] --> unique , optional, int(0|1)
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*/
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require_once("functions.inc");
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function addgateway($enable,$state,$gateway,$monitor,$weight,$default){
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global $config,$g;
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$exists = false;
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$lb = &$config['lb'];
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foreach($lb['gateway'] as $tgate)
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if ($gateway == $tgate['gateway']){
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$exists = true;
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break;
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}
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}
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if (!$exists) {
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$tgate = array();
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$tgate['enable'] = $enable;
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if ($enable)
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$tgate['state'] = $this->getstate($monitor);
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else
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$tgate['state'] = 0;
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$tgate['gateway'] = $gateway;
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$tgate['monitor'] = $monitor;
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$tgate['weight'] = $weight;
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if ($default==1) {
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$i=0;
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foreach($lb['gateway'] as $ttgate) {
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if (isset($this->lb['gateway'][$i]['default']))
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unset($this->lb['gateway'][$i]['default']);
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$i++;
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}
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$tgate['default'] = 1;
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} else
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$tgate['default'] = 0;
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$lb['gateway'][] = $tgate;
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return true;
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} else {
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return "error: gateway exists!";
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}
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function edit_gateway($num,$enable,$state,$gateway,$monitor,$weight,$default){
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global $config,$g;
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$i=0;
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$exists = false;
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$lb = &$config['lb'];
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foreach($lb['gateway'] as $tgate)
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if ($gateway == $tgate['gateway'] && $i!=$num){
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$exists = true;
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break;
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}
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$i++;
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}
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if (!$exists) {
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$tgate = array();
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$tgate['enable'] = $enable;
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if ($enable)
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$tgate['state'] = get_state($monitor);
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else
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$tgate['state'] = 0;
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$tgate['gateway'] = $gateway;
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$tgate['monitor'] = $monitor;
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$tgate['weight'] = $weight;
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if ($default==1) {
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$i=0;
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foreach($lb['gateway'] as $ttgate){
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if (isset($lb['gateway'][$i]['default']))
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unset($lb['gateway'][$i]['default']);
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$i++;
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}
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$tgate['default'] = 1;
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} else
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$tgate['default'] = 0;
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$lb['gateway'][$num] = $tgate;
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return true;
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} else {
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return "error: gateway exists!";
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}
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function get_state($ip){
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767a716e
|
Scott Ullrich
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$result = "";
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315373b8
|
Scott Ullrich
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$pingcmd = exec("/usr/local/bin/sudo /sbin/ping -c1 -t1 -n ".$ip,$result);
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767a716e
|
Scott Ullrich
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$match = "";
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315373b8
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Scott Ullrich
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if (preg_match_all('/.*100\%\spacket\sloss.*/',$result[count($result)-1], $match))
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return 0;
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if (preg_match_all('/.*0\%\spacket\sloss.*/',$result[count($result)-2], $match))
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return 1;
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}
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function rules(){
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global $config,$g;
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$lb = &$config['lb'];
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$lancfg = $config['interfaces']['lan'];
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$wancfg = $config['interfaces']['wan'];
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$out_flow = ' ip from '.$lancfg['ipaddr'].'/'.$lancfg['subnet']
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.' to not '. $lancfg['ipaddr'].'/'.$lancfg['subnet'];
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$in_flow = 'ip from not '.$lancfg['ipaddr'].'/'.$lancfg['subnet']
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.' to '.$lancfg['ipaddr'].'/'.$lancfg['subnet'];
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$rules ="";
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$num = 1;
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$i=0;
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86e0729f
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Chris Dionissopoulos
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$gates = count($lb['gateway']);
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315373b8
|
Scott Ullrich
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foreach($lb['gateway'] as $tgate){
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$num++;
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$in_num = 10000+$num;
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$out_num = 11000+$num;
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$skipto = 20000 + $num*10;
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$sw[$i] = 0;
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for($j=$i;$j<$gates;$j++)
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$sw[$i] +=$lb['gateway'][$j]['weight'];
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$prob = round($tgate['weight']/$sw[$i], 2);
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$rules .='/sbin/ipfw add $in_num set 5 skipto '.$skipto
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.' '.$in_flow.' mac any '.arp_get_mac_by_ip($tgate['gateway'])
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.' in recv '.$wancfg['if'].' keep-state\n';
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86e0729f
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Chris Dionissopoulos
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$rules .='/sbin/ipfw add $out_num set 6 prob '.$prob.' skipto '.$skipto
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.' '.$out_flow.' in recv '. $lancfg['if'].' keep-state\n';
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315373b8
|
Scott Ullrich
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$rules .='/sbin/ipfw add $skipto set 6 fwd '.$tgate['gateway']
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.' '.$out_flow.' in recv '.$lancfg['if'].'\n';
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$skipto++;
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$rule .= '/sbin/ipfw add $skipto set 6 skipto 65535 ip from any to any\n';
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$i++;
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}
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return $rules;
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}
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ff074bf9
|
Scott Ullrich
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?>
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