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<?php /*---------------------------------------- LiteSpeed_Stats to SNMP bridge. Relay stats to SNMPD. Copyright (C) 2006 LiteSpeed Technologies, Inc. This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA Version: 1.0 @ 08/23/2006 Contact: bug@litespeedtech.com Url: http://www.litespeedtech.com Requirement: 1)LiteSpeed Web Server version >= 2.1.18 2)PHP 5+ ----------------------------------------*/ require_once("class.litespeed_stats.php"); class litespeed_snmp_bridge { public $processes = 1; public $report_path = "/tmp/lshttpd/"; public $cache_time = 0; public $cache_file = null; public $stats = null; public function litespeed_snmp_bridge($processes = 1, $report_path = "/tmp/lshttpd/", $cache_time = 0, $cache_file = null) { $this->processes = (int) $processes; $this->report_path = trim($report_path); //prepare parser if($this->cache_time > 0 && strlen($this->cache_file) > 0) { if(file_exists($this->cache_file) && time() - filemtime($this->cache_file) <= $this->cache_time) { $unserial = unserialize(file_get_contents($this->cache_file)); if(is_a($unserial,"litespeed_stats")) { $this->stats = $unserial; } else { $this->stats = new litespeed_stats($this->processes,$this->report_path); $this->stats->parse(); $this->save_cache($this->cache_file, $this->stats); } } else { $this->stats = new litespeed_stats($this->processes,$this->report_path); $this->stats->parse(); $this->save_cache($this->cache_file, $this->stats); } } else { $this->stats = new litespeed_stats($this->processes,$this->report_path); $this->stats->parse(); } } //generate snmp compatible response public function format_response($oid, $type, $data) { return "{$oid}\n{$type}\n{$data}\n"; } //aggregate oid info from 1 to 7 sector public function oid_part($tarray = null) { $str = ""; for($i=1; $i <= 7; $i++) { $str .= "." . $tarray[$i]; } return $str; } //retrieve single oid data public function oid_get($super, $oid) { $parsed = explode(".",$oid); //error..invalid oid parse if(count($parsed) < 9) { return; } $major = (int) $parsed[8]; if(count($parsed) < 10) { $minor = 1; } else { $minor = (int) $parsed[9]; } foreach($super as $key => $value) { $sanitized_major = (int) substr($major,0,1) . "00"; //index only if( $major == (int) $key ) { return $this->format_response($this->oid_part($parsed) . "." . $major . "." . $minor,"integer",$minor); } //non-index value if( $sanitized_major == (int) $key) { $size = count($value[0]); $map = $value[1]; if($size <= 0) { return null; } if(count($parsed) == 10) { if($minor > 0 && $minor <= $size) { $tempkeys = array_keys($value[0]); $temp = $value[0][$tempkeys[$minor-1]]; list($format,$itemkey) = explode(",",$value[1][$major]); return $this->format_response($oid, $format, $temp->$itemkey); } } } } } public function save_cache($file, $data) { file_put_contents($file, serialize($data)); } public function process($type, $oid) { //setup oid to var maps $vh_map = array( "201" => "string,vhost", "202" => "gauge,req_processing", "203" => "gauge,req_per_sec", "204" => "counter,req_total" ); $ext_map = array( "301" => "string,vhost", "302" => "string,type", "303" => "string,extapp", "304" => "gauge,config_max_conn", "305" => "gauge,effect_max_conn", "306" => "gauge,pool_size", "307" => "gauge,inuse_conn", "308" => "gauge,idle_conn", "309" => "gauge,waitqueue_depth", "310" => "gauge,req_per_sec", "311" => "counter,req_total" ); $gen_map = array( "101" => "string,product", "102" => "string,edition", "103" => "string,version", "104" => "string,uptime", "105" => "gauge,bps_in", "106" => "gauge,bps_out", "107" => "gauge,ssl_bps_in", "108" => "gauge,ssl_bps_out", "109" => "gauge,max_conn", "110" => "gauge,max_ssl_conn", "111" => "gauge,plain_conn", "112" => "gauge,avail_conn", "113" => "gauge,idle_conn", "114" => "gauge,ssl_conn", "115" => "gauge,avail_ssl_conn" ); //setup pointers $super = array(); $super["100"] = array(array($this->stats), $gen_map); $super["200"] = array($this->stats->vhosts, $vh_map); //put alll extapps to single array $extapps = array(); foreach($this->stats->vhosts as $value) { foreach($value->extapps as $vextapp) { $extapps[] = $vextapp; } } $super["300"] = array($extapps, $ext_map); //get single method if($type == "-g") { echo $this->oid_get($super, $oid); return; } //snmp walk traversal else if($type == "-n") { //build traversal nodes/oids $parsed = explode(".",$oid); $major = $parsed[8]; foreach($super as $key => $value) { //form index walk if($major == $key) { $size = count($value[0]); if($size <= 0) { return; } if(count($parsed) == 10) { $minor = (int) $parsed[9]; if($minor > 0 && $minor < $size) { echo $this->format_response($this->oid_part($parsed).".{$key}.".($minor+1),"integer",$minor+1); } } else if(count($parsed) == 9){ echo $this->format_response("{$oid}.1","integer",1); } } //data walk else if(array_key_exists($major,$value[1])) { $size = count($value[0]); if($size <= 0) { return; } if(count($parsed) == 10) { $minor = (int) $parsed[9]; if($minor > 0 && $minor < $size) { echo $this->oid_get($super, $this->oid_part($parsed).".{$major}.".($minor+1)); } } else if(count($parsed) == 9){ echo $this->oid_get($super, $this->oid_part($parsed).".{$major}.".(1)); } } } } } } ?>
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