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pfsense/etc/inc/vslb.inc
Darren Embry 06d84cf398 allow port in virtual servers to be left blank 
in which case listening port would be inherited from the pool
2012-05-11 12:49:38 -04:00

486 lines
15 KiB
PHP
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<?php
/* $Id$ */
/*
vslb.inc
Copyright (C) 2005-2008 Bill Marquette
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.
*/
/*
pfSense_BUILDER_BINARIES: /usr/local/sbin/relayd
pfSense_MODULE: routing
*/
/* DISABLE_PHP_LINT_CHECKING */
/* include all configuration functions */
class Monitor {
private $conf = array();
function __construct($config) {
$this->conf = $config;
}
public function p() {
return "check {$this->get('proto')}";
}
private function get($var) {
return isset($this->$var) ? $this->$var : "";
}
protected function config($element) {
return isset($this->conf[$element]) ? $this->conf[$element] : "";
}
}
class TCPMonitor extends Monitor {
protected $proto = 'tcp';
}
class SSLMonitor extends Monitor {
protected $proto = 'ssl';
}
class ICMPMonitor extends Monitor {
protected $proto = 'icmp';
}
class HTTPMonitor extends Monitor {
protected $proto = 'http';
function __construct($config) {
parent::__construct($config);
}
public function p() {
$method = ($this->code() != "") ? $this->code() : $this->digest();
return "check {$this->proto} {$this->path()} {$this->host()} {$method}";
}
private function path() {
return $this->config('path') != "" ? "'{$this->config('path')}'" : "";
}
private function host() {
return $this->config('host') != "" ? "host {$this->config('host')}" : "";
}
private function code() {
return $this->config('code') != "" ? "code {$this->config('code')}" : "";
}
private function digest() {
return $this->config('digest') != "" ? "digest {$this->config('digest')}" : "";
}
}
class HTTPSMonitor extends HTTPMonitor {
protected $proto = 'https';
}
class SendMonitor extends Monitor {
private $proto = 'send';
function __construct($config) {
parent::__construct($config);
}
public function p() {
return "check {$this->proto} {$this->data()} expect {$this->pattern()} {$this->ssl()}";
}
private function data() {
return $this->config('send') != "" ? "\"{$this->config('send')}\"" : "\"\"";
}
private function pattern() {
return $this->config('expect') != "" ? "\"{$this->config('expect')}\"" : "\"\"";
}
private function ssl() {
return $this->config('ssl') == true ? "ssl" : "";
}
}
function echo_lbaction($action) {
global $config;
// Index actions by name
$actions_a = array();
for ($i=0; isset($config['load_balancer']['lbaction'][$i]); $i++)
$actions_a[$config['load_balancer']['lbaction'][$i]['name']] = $config['load_balancer']['lbaction'][$i];
$ret = "";
$ret .= "{$actions_a[$action]['direction']} {$actions_a[$action]['type']} {$actions_a[$action]['action']}";
switch($actions_a[$action]['action']) {
case 'append':
$ret .= " \"{$actions_a[$action]['options']['value']}\" to \"{$actions_a[$action]['options']['akey']}\"";
break;
case 'change':
$ret .= " \"{$actions_a[$action]['options']['akey']}\" to \"{$actions_a[$action]['options']['value']}\"";
break;
case 'expect':
$ret .= " \"{$actions_a[$action]['options']['value']}\" from \"{$actions_a[$action]['options']['akey']}\"";
break;
case 'filter':
$ret .= " \"{$actions_a[$action]['options']['value']}\" from \"{$actions_a[$action]['options']['akey']}\"";
break;
case 'hash':
$ret .= " \"{$actions_a[$action]['options']['akey']}\"";
break;
case 'log':
$ret .= " \"{$actions_a[$action]['options']['akey']}\"";
break;
}
return $ret;
}
function relayd_configure($kill_first=false) {
global $config, $g;
// have to do this until every call to filter.inc is
// require_once() instead of require().
if (!function_exists('filter_expand_alias_array')) {
require_once("filter.inc");
}
$vs_a = $config['load_balancer']['virtual_server'];
$pool_a = $config['load_balancer']['lbpool'];
$protocol_a = $config['load_balancer']['lbprotocol'];
$setting = $config['load_balancer']['setting'];
$check_a = array();
foreach ((array)$config['load_balancer']['monitor_type'] as $type) {
switch($type['type']) {
case 'icmp':
$mon = new ICMPMonitor($type['options']);
break;
case 'tcp':
$mon = new TCPMonitor($type['options']);
break;
case 'http':
$mon = new HTTPMonitor($type['options']);
break;
case 'https':
$mon = new HTTPSMonitor($type['options']);
break;
case 'send':
$mon = new SendMonitor($type['options']);
break;
}
if($mon) {
$check_a[$type['name']] = $mon->p();
}
}
$fd = fopen("{$g['varetc_path']}/relayd.conf", "w");
$conf .= "log updates \n";
/* Global timeout, interval and prefork settings
if not specified by the user:
- use a 1000 ms timeout value as in pfsense 2.0.1 and above
- leave interval and prefork empty, relayd will use its default values */
if (isset($setting['timeout']) && !empty($setting['timeout'])) {
$conf .= "timeout ".$setting['timeout']." \n";
} else {
$conf .= "timeout 1000 \n";
}
if (isset($setting['interval']) && !empty($setting['interval'])) {
$conf .= "interval ".$setting['interval']." \n";
}
if (isset($setting['prefork']) && !empty($setting['prefork'])) {
$conf .= "prefork ".$setting['prefork']." \n";
}
/* reindex pools by name as we loop through the pools array */
$pools = array();
/* Virtual server pools */
if(is_array($pool_a)) {
for ($i = 0; isset($pool_a[$i]); $i++) {
if(is_array($pool_a[$i]['servers'])) {
if (!empty($pool_a[$i]['retry'])) {
$retrytext = " retry {$pool_a[$i]['retry']}";
} else {
$retrytext = "";
}
$conf .= "table <{$pool_a[$i]['name']}> {\n";
foreach ($pool_a[$i]['servers'] as $server) {
if (is_subnetv4($server)) {
foreach (subnetv4_expand($server) as $ip) {
$conf .= "\t{$ip}{$retrytext}\n";
}
}
else {
$conf .= "\t{$server}{$retrytext}\n";
}
}
$conf .= "}\n";
/* Index by name for easier fetching when we loop through the virtual servers */
$pools[$pool_a[$i]['name']] = $pool_a[$i];
}
}
}
// if(is_array($protocol_a)) {
// for ($i = 0; isset($protocol_a[$i]); $i++) {
// $proto = "{$protocol_a[$i]['type']} protocol \"{$protocol_a[$i]['name']}\" {\n";
// if(is_array($protocol_a[$i]['lbaction'])) {
// if($protocol_a[$i]['lbaction'][0] == "") {
// continue;
// }
// for ($a = 0; isset($protocol_a[$i]['lbaction'][$a]); $a++) {
// $proto .= " " . echo_lbaction($protocol_a[$i]['lbaction'][$a]) . "\n";
// }
// }
// $proto .= "}\n";
// $conf .= $proto;
// }
// }
$conf .= "dns protocol \"dnsproto\" {\n";
$conf .= "\t" . "tcp { nodelay, sack, socket buffer 1024, backlog 1000 }\n";
$conf .= "}\n";
if(is_array($vs_a)) {
for ($i = 0; isset($vs_a[$i]); $i++) {
$append_port_to_name = false;
if (is_alias($pools[$vs_a[$i]['pool']]['port'])) {
$dest_port_array = filter_expand_alias_array($pools[$vs_a[$i]['pool']]['port']);
$append_port_to_name = true;
}
else {
$dest_port_array = array($pools[$vs_a[$i]['pool']]['port']);
}
if (is_alias($vs_a[$i]['port'])) {
$src_port_array = filter_expand_alias_array($vs_a[$i]['port']);
$append_port_to_name = true;
}
else if ($vs_a[$i]['port']) {
$src_port_array = array($vs_a[$i]['port']);
}
else {
$src_port_array = $dest_port_array;
}
$append_ip_to_name = false;
if (is_alias($vs_a[$i]['ipaddr'])) {
$ip_list = array();
foreach (filter_expand_alias_array($vs_a[$i]['ipaddr']) as $item) {
log_error("item is $item");
if (is_subnetv4($item)) {
$ip_list = array_merge($ip_list, subnetv4_expand($item));
}
else {
$ip_list[] = $item;
}
}
$append_ip_to_name = true;
}
else if (is_subnetv4($vs_a[$i]['ipaddr'])) {
$ip_list = subnetv4_expand($vs_a[$i]['ipaddr']);
$append_ip_to_name = true;
}
else {
$ip_list = array($vs_a[$i]['ipaddr']);
}
for ($j = 0; $j < count($ip_list); $j += 1) {
$ip = $ip_list[$j];
for ($k = 0; $k < count($src_port_array) && $k < count($dest_port_array); $k += 1) {
$src_port = $src_port_array[$k];
$dest_port = $dest_port_array[$k];
$name = $vs_a[$i]['name'];
if ($append_ip_to_name) {
$name .= "_" . $j;
}
if ($append_port_to_name) {
$name .= "_" . $src_port;
}
if (($vs_a[$i]['mode'] == 'relay') || ($vs_a[$i]['relay_protocol'] == 'dns')) {
$conf .= "relay \"{$name}\" {\n";
$conf .= " listen on {$ip} port {$src_port}\n";
if ($vs_a[$i]['relay_protocol'] == "dns") {
$conf .= " protocol \"dnsproto\"\n";
} else {
$conf .= " protocol \"{$vs_a[$i]['relay_protocol']}\"\n";
}
$lbmode = "";
if ( $pools[$vs_a[$i]['pool']]['mode'] == "loadbalance" ) {
$lbmode = "mode loadbalance";
}
$conf .= " forward to <{$vs_a[$i]['pool']}> port {$dest_port} {$lbmode} {$check_a[$pools[$vs_a[$i]['pool']]['monitor']]} \n";
if (isset($vs_a[$i]['sitedown']) && strlen($vs_a[$i]['sitedown']) > 0)
$conf .= " forward to <{$vs_a[$i]['sitedown']}> port {$dest_port} {$lbmode} {$check_a[$pools[$vs_a[$i]['pool']]['monitor']]} \n";
$conf .= "}\n";
} else {
$conf .= "redirect \"{$name}\" {\n";
$conf .= " listen on {$ip} port {$src_port}\n";
$conf .= " forward to <{$vs_a[$i]['pool']}> port {$dest_port} {$check_a[$pools[$vs_a[$i]['pool']]['monitor']]} \n";
if (isset($config['system']['lb_use_sticky']))
$conf .= " sticky-address\n";
/* sitedown MUST use the same port as the primary pool - sucks, but it's a relayd thing */
if (isset($vs_a[$i]['sitedown']) && strlen($vs_a[$i]['sitedown']) > 0)
$conf .= " forward to <{$vs_a[$i]['sitedown']}> port {$dest_port} {$check_a[$pools[$vs_a[$i]['pool']]['monitor']]} \n";
$conf .= "}\n";
}
}
}
}
}
fwrite($fd, $conf);
fclose($fd);
if (is_process_running('relayd')) {
if (! empty($vs_a)) {
if ($kill_first) {
mwexec('pkill relayd');
mwexec("/usr/local/sbin/relayd -f {$g['varetc_path']}/relayd.conf");
} else {
// it's running and there is a config, just reload
mwexec("/usr/local/sbin/relayctl reload");
}
} else {
/*
* XXX: Something breaks our control connection with relayd
* and makes 'relayctl stop' not work
* rule reloads are the current suspect
* mwexec('/usr/local/sbin/relayctl stop');
* returns "command failed"
*/
mwexec('pkill relayd');
}
} else {
if (! empty($vs_a)) {
// not running and there is a config, start it
mwexec("/usr/local/sbin/relayd -f {$g['varetc_path']}/relayd.conf");
}
}
}
function get_lb_redirects() {
/*
# relayctl show summary
Id Type Name Avlblty Status
1 redirect testvs2 active
5 table test2:80 active (3 hosts up)
11 host 192.168.1.2 91.55% up
10 host 192.168.1.3 100.00% up
9 host 192.168.1.4 88.73% up
3 table test:80 active (1 hosts up)
7 host 192.168.1.2 66.20% down
6 host 192.168.1.3 97.18% up
0 redirect testvs active
3 table test:80 active (1 hosts up)
7 host 192.168.1.2 66.20% down
6 host 192.168.1.3 97.18% up
4 table testvs-sitedown:80 active (1 hosts up)
8 host 192.168.1.4 84.51% up
# relayctl show redirects
Id Type Name Avlblty Status
1 redirect testvs2 active
0 redirect testvs active
# relayctl show redirects
Id Type Name Avlblty Status
1 redirect testvs2 active
total: 2 sessions
last: 2/60s 2/h 2/d sessions
average: 1/60s 0/h 0/d sessions
0 redirect testvs active
*/
$rdr_a = array();
exec('/usr/local/sbin/relayctl show redirects 2>&1', $rdr_a);
$relay_a = array();
exec('/usr/local/sbin/relayctl show relays 2>&1', $relay_a);
$vs = array();
$cur_entry = "";
for ($i = 0; isset($rdr_a[$i]); $i++) {
$line = $rdr_a[$i];
if (preg_match("/^[0-9]+/", $line)) {
$regs = array();
if($x = preg_match("/^[0-9]+\s+redirect\s+([^\s]+)\s+([^\s]+)/", $line, $regs)) {
$cur_entry = trim($regs[1]);
$vs[trim($regs[1])] = array();
$vs[trim($regs[1])]['status'] = trim($regs[2]);
}
} elseif (($x = preg_match("/^\s+total:\s(.*)\ssessions/", $line, $regs)) && !empty($cur_entry)) {
$vs[$cur_entry]['total'] = trim($regs[1]);
} elseif (($x = preg_match("/^\s+last:\s(.*)\ssessions/", $line, $regs)) && !empty($cur_entry)) {
$vs[$cur_entry]['last'] = trim($regs[1]);
} elseif (($x = preg_match("/^\s+average:(.*)\ssessions/", $line, $regs)) && !empty($cur_entry)) {
$vs[$cur_entry]['average'] = trim($regs[1]);
}
}
$cur_entry = "";
for ($i = 0; isset($relay_a[$i]); $i++) {
$line = $relay_a[$i];
if (preg_match("/^[0-9]+/", $line)) {
$regs = array();
if($x = preg_match("/^[0-9]+\s+relay\s+([^\s]+)\s+([^\s]+)/", $line, $regs)) {
$cur_entry = trim($regs[1]);
$vs[trim($regs[1])] = array();
$vs[trim($regs[1])]['status'] = trim($regs[2]);
}
} elseif (($x = preg_match("/^\s+total:\s(.*)\ssessions/", $line, $regs)) && !empty($cur_entry)) {
$vs[$cur_entry]['total'] = trim($regs[1]);
} elseif (($x = preg_match("/^\s+last:\s(.*)\ssessions/", $line, $regs)) && !empty($cur_entry)) {
$vs[$cur_entry]['last'] = trim($regs[1]);
} elseif (($x = preg_match("/^\s+average:(.*)\ssessions/", $line, $regs)) && !empty($cur_entry)) {
$vs[$cur_entry]['average'] = trim($regs[1]);
}
}
return $vs;
}
function get_lb_summary() {
$relayctl = array();
exec('/usr/local/sbin/relayctl show summary 2>&1', $relayctl);
$relay_hosts=Array();
foreach( (array) $relayctl as $line) {
$t = explode("\t", $line);
switch (trim($t[1])) {
case "table":
$curpool=trim($t[2]);
break;
case "host":
$curhost=trim($t[2]);
$relay_hosts[$curpool][$curhost]['avail']=trim($t[3]);
$relay_hosts[$curpool][$curhost]['state']=trim($t[4]);
break;
}
}
return $relay_hosts;
}
?>
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