<?php
/*
** ZABBIX
** Copyright (C) 2000-2007 SIA Zabbix
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program 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 General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
**/

function SDI($msg="SDI") { echo "DEBUG INFO: "; var_dump($msg); echo SBR; } // DEBUG INFO!!!
function VDP($var, $msg=null) { echo "DEBUG DUMP: "; if(isset($msg)) echo '"'.$msg.'"'.SPACE; var_dump($var); echo SBR; } // DEBUG INFO!!!
function TODO($msg) { echo "TODO: ".$msg.SBR; }  // DEBUG INFO!!!

?>
<?php
	require_once 	"include/defines.inc.php";
	require_once	"include/func.inc.php";
	require_once 	"include/html.inc.php";
	require_once	"include/copt.lib.php";
	require_once	"include/profiles.inc.php";
	require_once	"conf/maintenance.inc.php";
	
// GLOBALS
	global $USER_DETAILS, $USER_RIGHTS;

	$USER_DETAILS	= array();
	$USER_RIGHTS	= array();
// END OF GLOBALS

// Include Classes
	require_once('include/classes/ctag.inc.php');
	require_once('include/classes/cvar.inc.php');
	require_once('include/classes/cspan.inc.php');
	require_once('include/classes/cimg.inc.php');
	require_once('include/classes/ccolor.inc.php');
	require_once('include/classes/cldap.inc.php');
	require_once('include/classes/clink.inc.php');
	require_once('include/classes/chelp.inc.php');
	require_once('include/classes/cbutton.inc.php');
	require_once('include/classes/clist.inc.php');
	require_once('include/classes/ccombobox.inc.php');
	require_once('include/classes/ctable.inc.php');
	require_once('include/classes/ctableinfo.inc.php');
	require_once('include/classes/ctextarea.inc.php');
	require_once('include/classes/ctextbox.inc.php');
	require_once('include/classes/cform.inc.php');
	require_once('include/classes/cfile.inc.php');
	require_once('include/classes/ccheckbox.inc.php');
	require_once('include/classes/cform.inc.php');
	require_once('include/classes/cformtable.inc.php');
	require_once('include/classes/cmap.inc.php');
	require_once('include/classes/cflash.inc.php');
	require_once('include/classes/ciframe.inc.php');
	require_once('include/classes/cpumenu.inc.php');
	require_once('include/classes/graph.inc.php');
	require_once('include/classes/cscript.inc.php');

// Include Tactical Overview modules

	require_once 	'include/locales.inc.php';

	include_once('include/classes/chostsinfo.mod.php');
	include_once('include/classes/ctriggerinfo.mod.php');
	include_once('include/classes/cserverinfo.mod.php');
	include_once('include/classes/cflashclock.mod.php');

	require_once 	'include/perm.inc.php';
	require_once 	'include/audit.inc.php';
	require_once 	'include/js.inc.php';

// Include Validation

	require_once 	'include/validate.inc.php';

	function zbx_err_handler($errno, $errstr, $errfile, $errline){
		error($errstr.'['.$errfile.':'.$errline.']');
//		show_messages();
//		die();
	}
	
	/********** START INITIALIZATION *********/

	set_error_handler('zbx_err_handler');

	global $ZBX_LOCALNODEID, $ZBX_LOCMASTERID, $ZBX_CONFIGURATION_FILE, $DB;
	global $ZBX_SERVER, $ZBX_SERVER_PORT;
	global $ZBX_LOCALES;

	$ZBX_LOCALNODEID = 0;
	$ZBX_LOCMASTERID = 0;

	$ZBX_CONFIGURATION_FILE = './conf/zabbix.conf.php';
	$ZBX_CONFIGURATION_FILE = realpath(dirname($ZBX_CONFIGURATION_FILE)).'/'.basename($ZBX_CONFIGURATION_FILE);

	unset($show_setup);
	
	
	if(defined('ZBX_DENY_GUI_ACCESS')){
		if(isset($ZBX_GUI_ACCESS_IP_RANGE) && is_array($ZBX_GUI_ACCESS_IP_RANGE)){
			$user_ip = (isset($_SERVER['HTTP_X_FORWARDED_FOR']) && !empty($_SERVER['HTTP_X_FORWARDED_FOR']))?($_SERVER['HTTP_X_FORWARDED_FOR']):($_SERVER['REMOTE_ADDR']);	
			if(!str_in_array($user_ip,$ZBX_GUI_ACCESS_IP_RANGE)) $DENY_GUI = TRUE;
		}
		else{
			$DENY_GUI = TRUE;
		}
	}

	if(file_exists($ZBX_CONFIGURATION_FILE) && !isset($_COOKIE['ZBX_CONFIG']) && !isset($DENY_GUI)){
		include $ZBX_CONFIGURATION_FILE;
		require_once('include/db.inc.php');
		
		$error = '';
		if(!DBconnect($error)){
			$_REQUEST['message'] = $error;

			define('ZBX_DISTRIBUTED', false);
			define('ZBX_PAGE_NO_AUTHERIZATION', true);
			
			$show_warning = true;
		}
		else{
			global $ZBX_LOCALNODEID, $ZBX_LOCMASTERID;

			/* Init LOCAL NODE ID */
			if($local_node_data = DBfetch(DBselect('SELECT * FROM nodes WHERE nodetype=1 order by nodeid'))){
				$ZBX_LOCALNODEID = $local_node_data['nodeid'];
				$ZBX_LOCMASTERID = $local_node_data['masterid'];

				define('ZBX_DISTRIBUTED', true);
			}
			else{
				define('ZBX_DISTRIBUTED', false);
			}
			unset($local_node_data);
		}
		unset($error);
	}
	else{
		if(file_exists($ZBX_CONFIGURATION_FILE)){
			include $ZBX_CONFIGURATION_FILE;
		}
		
		require_once('include/db.inc.php');
		
		define('ZBX_PAGE_NO_AUTHERIZATION', true);
		define('ZBX_DISTRIBUTED', false);
		$show_setup = true;
	}
	
	if(!defined('ZBX_PAGE_NO_AUTHERIZATION')){
		check_authorisation();
		if(file_exists('include/locales/'.$USER_DETAILS['lang'].'.inc.php')){
			include_once('include/locales/'.$USER_DETAILS['lang'].'.inc.php');
			process_locales();
		}
	}
	else{
		$USER_DETAILS = array(
			'alias' =>ZBX_GUEST_USER,
			'userid'=>0,
			'lang'  =>'en_gb',
			'type'  =>'0',
			'node'  =>array(
				'name'  =>'- unknown -',
				'nodeid'=>0));
	}
	
// INIT MB Strings if it's available
	init_mbstrings();
/*
//Require MB strings, otherwise show warning page.
	if(!isset($show_setup) && !isset($show_warning) && !init_mbstrings()){
		$_REQUEST['warning_msg'] = S_ZABBIX_VER.SPACE.S_REQUIRE_MB_STRING_MODULE;
		$show_warning = true;
	}
//*/

// Ajax - do not need warnings or Errors
	if((isset($DENY_GUI) || isset($show_setup) || isset($show_warning)) && (PAGE_TYPE_HTML <> detect_page_type())){
		header('Ajax-response: false');
		exit();
	}
//---
	
	if(isset($DENY_GUI)){
		unset($show_warning);
		include_once('warning.php');
	}

	if(isset($show_setup)){
		unset($show_setup);
		include_once('setup.php');
	}
	else if(isset($show_warning)){
		unset($show_warning);
		include_once('warning.php');
	}

	/********** END INITIALIZATION ************/

	function init_nodes(){
		/* Init CURRENT NODE ID */
		global	$USER_DETAILS,
			$ZBX_LOCALNODEID, $ZBX_LOCMASTERID,
			$ZBX_CURRENT_NODEID, $ZBX_CURRENT_SUBNODES, $ZBX_CURMASTERID,
			$ZBX_NODES,$ZBX_NODES_IDS,
			$ZBX_WITH_SUBNODES;

		$ZBX_CURRENT_SUBNODES = array();
		$ZBX_NODES_IDS = array();
		$ZBX_NODES = array();
		if(!defined('ZBX_PAGE_NO_AUTHERIZATION') && ZBX_DISTRIBUTED){
//SDI($_REQUEST);
			$ZBX_CURRENT_NODEID = get_cookie('zbx_current_nodeid', $ZBX_LOCALNODEID); // Selected node
			$ZBX_WITH_SUBNODES = get_cookie('zbx_with_subnodes', false); // Show elements FROM subnodes

			if(isset($_REQUEST['switch_node'])){
				if($node_data = DBfetch(DBselect('SELECT * FROM nodes WHERE nodeid='.$_REQUEST['switch_node']))){
					$ZBX_CURRENT_NODEID = $_REQUEST['switch_node'];
				}
				unset($node_data);
			}

			if(isset($_REQUEST['show_subnodes'])){
				$ZBX_WITH_SUBNODES = !empty($_REQUEST['show_subnodes']);
			}

			if($node_data = DBfetch(DBselect('SELECT * FROM nodes WHERE nodeid='.$ZBX_CURRENT_NODEID))){
				$ZBX_CURMASTERID = $node_data['masterid'];
			}
			
			$sql = 'SELECT nodeid,name,masterid FROM nodes';
			$db_nodes = DBselect($sql);

			while($node = DBfetch($db_nodes)){
				$ZBX_NODES_IDS[$node['nodeid']] = $node['nodeid'];
				$ZBX_NODES[$node['nodeid']] = $node;
			}

			if ( !isset($ZBX_NODES[$ZBX_CURRENT_NODEID]) ){
				$denyed_page_requested = true;
				$ZBX_CURRENT_NODEID = $ZBX_LOCALNODEID;
				$ZBX_CURMASTERID = $ZBX_LOCMASTERID;
			}

			foreach($ZBX_NODES as $nodeid => $node_data ){
				$curr_node = &$node_data;

				while(($curr_node['masterid']!=0) && (bccomp($curr_node['masterid'],$ZBX_CURRENT_NODEID)!=0)){
					$curr_node = &$ZBX_NODES[$curr_node['masterid']];
				}

				if(bccomp($curr_node['masterid'],$ZBX_CURRENT_NODEID)==0){
					$ZBX_CURRENT_SUBNODES[$nodeid] = $nodeid;
				}
			}

			zbx_set_post_cookie('zbx_current_nodeid',$ZBX_CURRENT_NODEID);
			zbx_set_post_cookie('zbx_with_subnodes',$ZBX_WITH_SUBNODES);
		}
		else{
			$ZBX_CURRENT_NODEID = $ZBX_LOCALNODEID;
			$ZBX_CURMASTERID = $ZBX_LOCMASTERID;
			$ZBX_WITH_SUBNODES = false;
		}

		$ZBX_CURRENT_SUBNODES[$ZBX_CURRENT_NODEID] = $ZBX_CURRENT_NODEID;

		if ( count($ZBX_CURRENT_SUBNODES) < 2 && !defined('ZBX_DISABLE_SUBNODES') )
			define('ZBX_DISABLE_SUBNODES', 1);

		$ZBX_CURRENT_SUBNODES = get_accessible_nodes_by_user($USER_DETAILS, PERM_READ_LIST, PERM_RES_IDS_ARRAY, $ZBX_CURRENT_SUBNODES);
	}

	function get_current_nodeid($forse_with_subnodes = null, $perm = null){
		global $USER_DETAILS, $ZBX_CURRENT_NODEID, $ZBX_CURRENT_SUBNODES, $ZBX_WITH_SUBNODES;
		if(!isset($ZBX_CURRENT_NODEID))
			init_nodes();

		$result = ( is_show_subnodes($forse_with_subnodes) ? $ZBX_CURRENT_SUBNODES : $ZBX_CURRENT_NODEID );
		if(!is_null($perm)){
			$result = get_accessible_nodes_by_user($USER_DETAILS, PERM_READ_ONLY, PERM_RES_IDS_ARRAY, $ZBX_CURRENT_SUBNODES);
		}

	return $result;
	}

	function get_node_name_by_elid($id_val, $forse_with_subnodes = null){
		global $ZBX_NODES;

		if ( ! is_show_subnodes($forse_with_subnodes) )
			return null;

		$nodeid = id2nodeid($id_val);

		if ( !isset($ZBX_NODES[$nodeid]) )
			return null;

		return '['.$ZBX_NODES[$nodeid]['name'].'] ';
	}

	function is_show_subnodes($forse_with_subnodes = null){
		global	$ZBX_WITH_SUBNODES;

		if(is_null($forse_with_subnodes)){
			if(defined('ZBX_DISABLE_SUBNODES'))
				$forse_with_subnodes = false;
			else
				$forse_with_subnodes = $ZBX_WITH_SUBNODES;
		}

	return $forse_with_subnodes;
	}

	function access_deny(){
	
		include_once "include/page_header.php";
		show_error_message(S_NO_PERMISSIONS);
		include_once "include/page_footer.php";
	}
	
	function detect_page_type($default=PAGE_TYPE_HTML){
		if(isset($_REQUEST['output'])){
			switch($_REQUEST['output']){
				case 'ajax':
					return PAGE_TYPE_JS;
					break;
				case 'json':
					return PAGE_TYPE_JS;
					break;
				case 'html':
					return PAGE_TYPE_HTML_BLOCK;
					break;
			}
		}
	return $default;
	}
	
	function show_messages($bool=TRUE,$okmsg=NULL,$errmsg=NULL){
		global	$page, $ZBX_MESSAGES;

		if (! defined('PAGE_HEADER_LOADED')) return;

		if (!isset($page["type"])) $page["type"] = PAGE_TYPE_HTML;

		$message = array();
		$width = 0;
		$height= 0;

		if(!$bool && !is_null($errmsg))		$msg="ERROR: ".$errmsg;
		else if($bool && !is_null($okmsg))	$msg=$okmsg;

		if(isset($msg)){
			switch($page["type"]){
				case PAGE_TYPE_IMAGE:
					array_push($message, array(
						'text'	=> $msg,
						'color'	=> (!$bool) ? array('R'=>255,'G'=>0,'B'=>0) : array('R'=>34,'G'=>51,'B'=>68),
						'font'	=> 2));
					$width = max($width, ImageFontWidth(2) * strlen($msg) + 1);
					$height += imagefontheight(2) + 1;
					break;			
				case PAGE_TYPE_XML:
					echo htmlspecialchars($msg)."\n";
					break;			
				case PAGE_TYPE_HTML:
				default:
					$msg_tab = new CTable($msg,($bool?'msgok':'msgerr'));
					$msg_tab->SetCellPadding(0);
					$msg_tab->SetCellSpacing(0);
					
					$msg_col = new CCol(bold($msg),'msg');
					$msg_col->AddOption('id','page_msg');
					
					$msg_details = SPACE;
					if(isset($ZBX_MESSAGES) && !empty($ZBX_MESSAGES)){
						$msg_details = new CDiv(S_DETAILS,'pointer');
						$msg_details->AddAction('onclick',new CScript("javascript: ShowHide('msg_messages', IE?'block':'table');"));
						$msg_details->AddOption('title',S_MAXIMIZE.'/'.S_MINIMIZE);
					}
					
					$msg_tab->AddRow(array(new CCol($msg_details,'clr'),$msg_col));
					$msg_tab->Show();
					break;
			}
		}


		if(isset($ZBX_MESSAGES)){
			if($page["type"] == PAGE_TYPE_IMAGE){
				$msg_font = 2;
				foreach($ZBX_MESSAGES as $msg){
					if($msg['type'] == 'error'){
						array_push($message, array(
							'text'	=> $msg['message'],
							'color'	=> array('R'=>255,'G'=>55,'B'=>55),
							'font'	=> $msg_font));
					}
					else{
						array_push($message, array(
							'text'	=> $msg['message'],
							'color'	=> array('R'=>155,'G'=>155,'B'=>55),
							'font'	=> $msg_font));
					}
					$width = max($width, ImageFontWidth($msg_font) * strlen($msg['message']) + 1);
					$height += imagefontheight($msg_font) + 1;
				}
			}
			else if($page["type"] == PAGE_TYPE_XML){
				foreach($ZBX_MESSAGES as $msg){
					echo '['.$msg['type'].'] '.$msg['message']."\n";
				}
			}
			else{
				$lst_error = new CList(null,'messages');

				foreach($ZBX_MESSAGES as $msg){
					$lst_error->AddItem($msg['message'], $msg['type']);
					$bool &= ('error' != strtolower($msg['type']));
				}
//message scroll if needed
				$msg_show = 6;
				$msg_font_size = 6;
				$msg_count = count($ZBX_MESSAGES) + 1;
				
				if($msg_count > $msg_show) $msg_count = $msg_show;

				$msg_count = ($msg_count * $msg_font_size * 4);
				$lst_error->AddOption('style','font-size: '.$msg_font_size.'pt; height: '.$msg_count.'px;');
				

				$tab = new CTable(null,($bool?'msgok':'msgerr'));
				
				$tab->SetCellPadding(0);
				$tab->SetCellSpacing(0);

				$tab->AddOption('id','msg_messages');
				$tab->AddOption('style','width: 100%;');
				
				if(isset($msg_tab)){
					$tab->AddOption('style','display: none;');
				}
				
				$tab->AddRow(new CCol($lst_error,'msg'));
				$tab->Show();
//---
			}
			$ZBX_MESSAGES = null;
		}
		
		if($page["type"] == PAGE_TYPE_IMAGE && count($message) > 0){
			$width += 2;
			$height += 2;
			$canvas = imagecreate($width, $height);
			ImageFilledRectangle($canvas,0,0,$width,$height, ImageColorAllocate($canvas, 255, 255, 255));

			foreach($message as $id => $msg){
			
				$message[$id]['y'] = 1 + (isset($previd) ? $message[$previd]['y'] + $message[$previd]['h'] : 0 );
				$message[$id]['h'] = imagefontheight($msg['font']);
				
				ImageString(
					$canvas,
					$msg['font'],
					1,
					$message[$id]['y'],
					$msg['text'],
					ImageColorAllocate($canvas, $msg['color']['R'], $msg['color']['G'], $msg['color']['B'])
					);
				
				$previd = $id;
			}
			ImageOut($canvas);
			ImageDestroy($canvas);
		}
	}

	function show_message($msg){
		show_messages(TRUE,$msg,'');
	}

	function show_error_message($msg){
		show_messages(FALSE,'',$msg);
	}

	function info($msg){
		global $ZBX_MESSAGES;

		if(is_null($ZBX_MESSAGES))
			$ZBX_MESSAGES = array();

		array_push($ZBX_MESSAGES, array('type' => 'info', 'message' => $msg));
	}

	function error($msg){
		global $ZBX_MESSAGES;

		if(is_null($ZBX_MESSAGES))
			$ZBX_MESSAGES = array();

		array_push($ZBX_MESSAGES, array('type' => 'error', 'message' => $msg));
	}

	function clear_messages(){
		global $ZBX_MESSAGES;

		$ZBX_MESSAGES = null;
	}

	function fatal_error($msg){
		include_once "include/page_header.php";
		show_error_message($msg);
		include_once "include/page_footer.php";
	}
	
//	The hash has form <md5sum of triggerid>,<sum of priorities>
	function calc_trigger_hash(){

		$priority = array(0=>0, 1=>0, 2=>0, 3=>0, 4=>0, 5=>0);
		$triggerids="";

	       	$result=DBselect('SELECT t.triggerid,t.priority from triggers t,hosts h,items i,functions f'.
			'  WHERE t.value=1 and f.itemid=i.itemid and h.hostid=i.hostid and t.triggerid=f.triggerid and i.status=0');

		while($row=DBfetch($result)){
			$ack = get_last_event_by_triggerid($row["triggerid"]);
			if($ack["acknowledged"] == 1) continue;

			$triggerids="$triggerids,".$row["triggerid"];
			$priority[$row["priority"]]++;
		}

		$md5sum=md5($triggerids);

		$priorities=0;
		for($i=0;$i<=5;$i++)	$priorities += pow(100,$i)*$priority[$i];

		return	"$priorities,$md5sum";
	}

	function parse_period($str){
		$out = NULL;
		$str = trim($str,';');
		$periods = split(';',$str);
		foreach($periods as $preiod){
			if(!ereg('^([1-7])-([1-7]),([0-9]{1,2}):([0-9]{1,2})-([0-9]{1,2}):([0-9]{1,2})$', $preiod, $arr))
				return NULL;
			for($i = $arr[1]; $i <= $arr[2]; $i++){
				if(!isset($out[$i])) $out[$i] = array();
				array_push($out[$i],
					array(
						'start_h'	=> $arr[3],
						'start_m'	=> $arr[4],
						'end_h'		=> $arr[5],
						'end_m'		=> $arr[6]
					));
			}
		}
		return $out;
	}

	function find_period_start($periods,$time){
		$date = getdate($time);
		$wday = $date['wday'] == 0 ? 7 : $date['wday'];
		$curr = $date['hours']*100+$date['minutes'];

		if(isset($periods[$wday])){
			$next_h = -1;
			$next_m = -1;
			foreach($periods[$wday] as $period){
				$per_start = $period['start_h']*100+$period['start_m'];
				if($per_start > $curr)
				{
					if(($next_h == -1 && $next_m == -1) || ($per_start < ($next_h*100 + $next_m)))
					{
						$next_h = $period['start_h'];
						$next_m = $period['start_m'];
					}
					continue;
				}
				$per_end = $period['end_h']*100+$period['end_m'];
				if($per_end <= $curr) continue;
				return $time;
			}
			if($next_h >= 0 && $next_m >= 0){
				return mktime($next_h, $next_m, 0, $date['mon'], $date['mday'], $date['year']);
			}
		}
		for($days=1; $days < 7 ; ++$days){
			$new_wday = (($wday + $days - 1)%7 + 1);
			if(isset($periods[$new_wday ])){
				$next_h = -1;
				$next_m = -1;
				foreach($periods[$new_wday] as $period)
				{
					$per_start = $period['start_h']*100+$period['start_m'];
					if(($next_h == -1 && $next_m == -1) || ($per_start < ($next_h*100 + $next_m)))
					{
						$next_h = $period['start_h'];
						$next_m = $period['start_m'];
					}
				}
				if($next_h >= 0 && $next_m >= 0)
				{
					return mktime($next_h, $next_m, 0, $date['mon'], $date['mday'] + $days, $date['year']);
				}
			}
		}
		return -1;
	}

	function find_period_end($periods,$time,$max_time){
		$date = getdate($time);
		$wday = $date['wday'] == 0 ? 7 : $date['wday'];
		$curr = $date['hours']*100+$date['minutes'];

		if(isset($periods[$wday])){
			$next_h = -1;
			$next_m = -1;
			foreach($periods[$wday] as $period){
				$per_start = $period['start_h']*100+$period['start_m'];
				$per_end = $period['end_h']*100+$period['end_m'];
				if($per_start > $curr) continue;
				if($per_end < $curr) continue;

				if(($next_h == -1 && $next_m == -1) || ($per_end > ($next_h*100 + $next_m)))
				{
					$next_h = $period['end_h'];
					$next_m = $period['end_m'];
				}
			}
			if($next_h >= 0 && $next_m >= 0){
				$new_time = mktime($next_h, $next_m, 0, $date['mon'], $date['mday'], $date['year']);

				if($new_time == $time)
					return $time;
				if($new_time > $max_time)
					return $max_time;

				$next_time = find_period_end($periods,$new_time,$max_time);
				if($next_time < 0)
					return $new_time;
				else
					return $next_time;
			}
		}
		return -1;
	}

	function validate_period(&$str){
		$str = trim($str,';');
		$out = "";
		$periods = split(';',$str);
		foreach($periods as $preiod){
			// arr[idx]   1       2         3             4            5            6
			if(!ereg('^([1-7])-([1-7]),([0-9]{1,2}):([0-9]{1,2})-([0-9]{1,2}):([0-9]{1,2})$', $preiod, $arr))
				return false;

			if($arr[1] > $arr[2]) // check week day
				return false;
			if($arr[3] > 23 || $arr[3] < 0 || $arr[5] > 24 || $arr[5] < 0) // check hour
				return false;
			if($arr[4] > 59 || $arr[4] < 0 || $arr[6] > 59 || $arr[6] < 0) // check min
				return false;
			if(($arr[5]*100 + $arr[6]) > 2400) // check max time 24:00
				return false;
			if(($arr[3] * 100 + $arr[4]) >= ($arr[5] * 100 + $arr[6])) // check time period
				return false;

			$out .= sprintf("%d-%d,%02d:%02d-%02d:%02d",$arr[1],$arr[2],$arr[3],$arr[4],$arr[5],$arr[6]).';';
		}
		$str = $out;
//parse_period($str);
		return true;
	}

	function validate_float($str){
//		echo "Validating float:$str<br>";
		if (eregi('^[ ]*([0-9]+)((\.)?)([0-9]*[KMG]{0,1})[ ]*$', $str, $arr)) {
			return 0;
		}
		else{
			return -1;
		}
	}

// Check if str has format #<float> or <float>
	function validate_ticks($str){
//		echo "Validating float:$str<br>";
		if (eregi('^[ ]*#([0-9]+)((\.)?)([0-9]*)[ ]*$', $str, $arr)) {
			return 0;
		}
		else return validate_float($str);
	}


	/******************************************************************************
	 *                                                                            *
	 * Purpose: Reset nextcheck for related items                                 *
	 *                                                                            *
	 * Comments: !!! Don't forget sync code with C !!!                            *
	 *                                                                            *
	 ******************************************************************************/
	function reset_items_nextcheck($triggerid){
		$sql="SELECT itemid from functions WHERE triggerid=$triggerid";
		$result=DBselect($sql);
		while($row=DBfetch($result)){
			$sql="update items set nextcheck=0 WHERE itemid=".$row["itemid"];
			DBexecute($sql);
		}
	}

	function get_status(){
//		global $DB;
		$status = array();
// server
		if( (exec('ps -ef|grep zabbix_server|grep -v grep|wc -l')>0) || (exec('ps -ax|grep zabbix_server|grep -v grep|wc -l')>0) ){
			$status["zabbix_server"] = S_YES;
		}
		else{
			$status["zabbix_server"] = S_NO;
		}
// history & trends
/*		if ($DB['DB_TYPE'] == "MYSQL"){
			$row=DBfetch(DBselect('show table status like "history"'));
			$status["history_count"]  = $row["Rows"];
			$row=DBfetch(DBselect('show table status like "history_log"'));
			$status["history_count"] += $row["Rows"];
			$row=DBfetch(DBselect('show table status like "history_str"'));
			$status["history_count"] += $row["Rows"];
			$row=DBfetch(DBselect('show table status like "history_uint"'));
			$status["history_count"] += $row["Rows"];

			$row=DBfetch(DBselect('show table status like "trends"'));
			$status["trends_count"] = $row["Rows"];
		}
		else{
			$row=DBfetch(DBselect('SELECT COUNT(itemid) as cnt from history'));
			$status["history_count"]  = $row["cnt"];
			$row=DBfetch(DBselect('SELECT COUNT(itemid) as cnt from history_log'));
			$status["history_count"] += $row["cnt"];
			$row=DBfetch(DBselect('SELECT COUNT(itemid) as cnt from history_str'));
			$status["history_count"] += $row["cnt"];
			$row=DBfetch(DBselect('SELECT COUNT(itemid) as cnt from history_uint'));
			$status["history_count"] += $row["cnt"];

			$result=DBselect('SELECT COUNT(itemid) as cnt from trends');
			$row=DBfetch($result);
			$status["trends_count"]=$row["cnt"];
		}*/
// events
/*		$row=DBfetch(DBselect('SELECT COUNT(eventid) as cnt from events'));
		$status["events_count"]=$row["cnt"];*/
// alerts
/*		$row=DBfetch(DBselect('SELECT COUNT(alertid) as cnt from alerts"));
		$status["alerts_count"]=$row["cnt"];*/
		
// triggers
		$sql = 'SELECT COUNT(DISTINCT t.triggerid) as cnt '.
				' FROM triggers t, functions f, items i, hosts h'.
				' WHERE t.triggerid=f.triggerid '.
					' AND f.itemid=i.itemid '.
					' AND i.status='.ITEM_STATUS_ACTIVE.
					' AND i.hostid=h.hostid '.
					' AND h.status='.HOST_STATUS_MONITORED;
					
		$row=DBfetch(DBselect($sql));
		$status['triggers_count']=$row['cnt'];

		$row=DBfetch(DBselect($sql.' and t.status=0'));
		$status['triggers_count_enabled']=$row['cnt'];

		$row=DBfetch(DBselect($sql.' and t.status=1'));
		$status['triggers_count_disabled']=$row['cnt'];

		$row=DBfetch(DBselect($sql.' and t.status=0 and t.value=0'));
		$status['triggers_count_off']=$row['cnt'];

		$row=DBfetch(DBselect($sql.' and t.status=0 and t.value=1'));
		$status['triggers_count_on']=$row['cnt'];

		$row=DBfetch(DBselect($sql.' and t.status=0 and t.value=2'));
		$status['triggers_count_unknown']=$row['cnt'];
		
// items 
		$sql = 'SELECT COUNT(DISTINCT i.itemid) as cnt '.
				' FROM items i, hosts h '.
				' WHERE i.hostid=h.hostid '.
					' AND h.status='.HOST_STATUS_MONITORED;
					
		$row=DBfetch(DBselect($sql));
		$status['items_count']=$row['cnt'];

		$row=DBfetch(DBselect($sql.' and i.status=0'));
		$status['items_count_monitored']=$row['cnt'];

		$row=DBfetch(DBselect($sql.' and i.status=1'));
		$status['items_count_disabled']=$row['cnt'];

		$row=DBfetch(DBselect($sql.' and i.status=3'));
		$status['items_count_not_supported']=$row['cnt'];

		$row=DBfetch(DBselect($sql.' and i.type=2'));
		$status['items_count_trapper']=$row['cnt'];
		
// hosts
		$sql = 'SELECT COUNT(hostid) as cnt '.
				' FROM hosts '.
				' WHERE status IN ('.HOST_STATUS_MONITORED.','.HOST_STATUS_NOT_MONITORED.','.HOST_STATUS_TEMPLATE.','.HOST_STATUS_DELETED.' )';
		$row=DBfetch(DBselect($sql));
		$status['hosts_count']=$row['cnt'];

		$row=DBfetch(DBselect('SELECT COUNT(hostid) as cnt FROM hosts WHERE status='.HOST_STATUS_MONITORED));
		$status['hosts_count_monitored']=$row['cnt'];

		$row=DBfetch(DBselect('SELECT COUNT(hostid) as cnt FROM hosts WHERE status='.HOST_STATUS_NOT_MONITORED));
		$status['hosts_count_not_monitored']=$row['cnt'];

		$row=DBfetch(DBselect('SELECT COUNT(hostid) as cnt FROM hosts WHERE status='.HOST_STATUS_TEMPLATE));
		$status['hosts_count_template']=$row['cnt'];

		$row=DBfetch(DBselect('SELECT COUNT(hostid) as cnt FROM hosts WHERE status='.HOST_STATUS_DELETED));
		$status['hosts_count_deleted']=$row['cnt'];
		
// users
		$row=DBfetch(DBselect('SELECT COUNT(userid) as cnt FROM users'));
		$status['users_count']=$row['cnt'];
		
		$status['users_online']=0;
		$sql = 'SELECT DISTINCT s.userid '.
				' FROM sessions s, users u '.
				' WHERE u.userid=s.userid '.
					' AND u.autologout>0 '.
					' AND (s.lastaccess+u.autologout)>'.time();
		$result=DBselect($sql);	
		while(DBfetch($result))		$status['users_online']++;
		
		$result=DBselect('SELECT DISTINCT s.userid '.
						' FROM sessions s, users u '.
						' WHERE u.userid=s.userid '.
							' AND u.autologout=0');
		while(DBfetch($result))		$status['users_online']++;

		$result=DBselect('SELECT i.type, i.delay, count(*),count(*)/i.delay as qps '.
							' FROM items i,hosts h '.
							' WHERE i.status='.ITEM_STATUS_ACTIVE.
								' AND i.hostid=h.hostid '.
								' AND h.status='.HOST_STATUS_MONITORED.
							' GROUP BY i.type,i.delay '.
							' ORDER BY i.type, i.delay');

		$status['qps_total']=0;
		while($row=DBfetch($result)){
			$status['qps_total']+=$row['qps'];
		}

	return $status;
	}

	function get_resource_name($permission,$id){
		$res='-';
		if($permission=='Graph'){
			if(isset($id)&&($id!=0)){
				if($graph=get_graph_by_graphid($id))
					$res=$graph['name'];
			}
			else if(!isset($id) || $id == 0){
				$res='All graphs';
			}
		}
		else if($permission=='Host'){
			if(isset($id)&&($id!=0)){
				if($host=get_host_by_hostid($id))
					$res=$host['host'];
			}
			else if(!isset($id) || $id == 0){
				$res='All hosts';
			}
		}
		else if($permission=='Screen'){
			if(isset($id)&&($id!=0)){
				if($screen=get_screen_by_screenid($id))
					$res=$screen['name'];
			}
			else if(!isset($id) || $id == 0){
				$res='All screens';
			}
		}
		else if($permission=='Item'){
			if(isset($id)&&($id!=0)){
				if($item=get_item_by_itemid($id))
					if($host=get_host_by_hostid($item['hostid']))
						$res=$host['host'].':'.$item['description'];
			}
			else if(!isset($id) || $id == 0){
				$res='All items';
			}
		}
		else if($permission=='User'){
			if(isset($id)&&($id!=0)){
				if($user=get_user_by_userid($id))
					$res=$user['alias'];
			}
			else if(!isset($id) || $id == 0){
				$res='All users';
			}
		}
		else if($permission=='Network map'){
			if(isset($id)&&($id!=0)){
				if($user=get_sysmap_by_sysmapid($id))
					$res=$user['name'];
			}
			else if(!isset($id) || $id == 0){
				$res='All maps';
			}
		}
		else if($permission=='Application'){
			if(isset($id)&&($id > 0)){
				if($app = get_application_by_applicationid($id))
					$res = $app['name'];
			}
			else if(!isset($id) || $id == 0){
				$res='All applications';
			}
		}
		else if($permission=='Service'){
			if(isset($id)&&($id > 0)){
				if($service = get_service_by_serviceid($id))
					$res = $service['name'];
			}
			else if(!isset($id) || $id == 0){
				$res='All services';
			}
		}

		if($res == '-' && isset($id) && ($id > 0))
			$res = $id;

		return $res;
	}

/* Use ImageSetStyle+ImageLIne instead of bugged ImageDashedLine */
	if(function_exists('imagesetstyle')){
		function DashedLine($image,$x1,$y1,$x2,$y2,$color){
// Style for dashed lines
//			$style = array($color, $color, $color, $color, IMG_COLOR_TRANSPARENT, IMG_COLOR_TRANSPARENT, IMG_COLOR_TRANSPARENT, IMG_COLOR_TRANSPARENT);
			$style = array($color, $color, IMG_COLOR_TRANSPARENT, IMG_COLOR_TRANSPARENT);
			ImageSetStyle($image, $style);
			ImageLine($image,$x1,$y1,$x2,$y2,IMG_COLOR_STYLED);
		}

	}
	else{
		function DashedLine($image,$x1,$y1,$x2,$y2,$color){
			ImageDashedLine($image,$x1,$y1,$x2,$y2,$color);
		}
	}

	function DashedRectangle($image,$x1,$y1,$x2,$y2,$color){
		DashedLine($image, $x1,$y1,$x1,$y2,$color);
		DashedLine($image, $x1,$y2,$x2,$y2,$color);
		DashedLine($image, $x2,$y2,$x2,$y1,$color);
		DashedLine($image, $x2,$y1,$x1,$y1,$color);
	}


	function set_image_header($format=null){
		global $IMAGE_FORMAT_DEFAULT;

		if(is_null($format)) $format = $IMAGE_FORMAT_DEFAULT;
		
		if(IMAGE_FORMAT_JPEG == $format)	Header( "Content-type:  image/jpeg"); 
		if(IMAGE_FORMAT_TEXT == $format)	Header( "Content-type:  text/html"); 
		else								Header( "Content-type:  image/png"); 
		
		Header( "Expires:  Mon, 17 Aug 1998 12:51:50 GMT"); 
	}
	
	function ImageOut($image,$format=NULL){
		global $IMAGE_FORMAT_DEFAULT;

		if(is_null($format)) $format = $IMAGE_FORMAT_DEFAULT;
		
		if(IMAGE_FORMAT_JPEG == $format)
			ImageJPEG($image);
		else
			ImagePNG($image);

		imagedestroy($image);
	}

	function encode_log($data){
		if(defined('ZBX_LOG_ENCODING_DEFAULT') && function_exists('mb_convert_encoding')){
			$new=mb_convert_encoding($data, S_HTML_CHARSET, ZBX_LOG_ENCODING_DEFAULT);
		}
		else{
			$new = $data;
		}
		return $new;
	}

/*************** VALUE MAPPING ******************/
	function add_mapping_to_valuemap($valuemapid, $mappings){
		DBexecute("delete FROM mappings WHERE valuemapid=$valuemapid");

		foreach($mappings as $map){
			$mappingid = get_dbid("mappings","mappingid");

			$result = DBexecute("insert into mappings (mappingid,valuemapid, value, newvalue)".
				" values (".$mappingid.",".$valuemapid.",".zbx_dbstr($map["value"]).",".
				zbx_dbstr($map["newvalue"]).")");

			if(!$result)
				return $result;
		}
		return TRUE;
	}

	function add_valuemap($name, $mappings){
		if(!is_array($mappings))	return FALSE;

		$valuemapid = get_dbid("valuemaps","valuemapid");
		
		$result = DBexecute("insert into valuemaps (valuemapid,name) values ($valuemapid,".zbx_dbstr($name).")");
		if(!$result)
			return $result;

		$result = add_mapping_to_valuemap($valuemapid, $mappings);
		if(!$result){
			delete_valuemap($valuemapid);
		}
		else{
			$result = $valuemapid;
		}
		return $result;
	}

	function update_valuemap($valuemapid, $name, $mappings){
		if(!is_array($mappings))	return FALSE;

		$result = DBexecute('UPDATE valuemaps SET name='.zbx_dbstr($name).
			' WHERE valuemapid='.$valuemapid);

		if(!$result)
			return $result;

		$result = add_mapping_to_valuemap($valuemapid, $mappings);
		if(!$result){
			delete_valuemap($valuemapid);
		}
		return $result;
	}

	function delete_valuemap($valuemapid){
		DBexecute('DELETE FROM mappings WHERE valuemapid='.$valuemapid);
		DBexecute('DELETE FROM valuemaps WHERE valuemapid='.$valuemapid);
		return TRUE;
	}

	function replace_value_by_map($value, $valuemapid){
		if($valuemapid < 1) return $value;

		$result = DBselect('SELECT newvalue FROM mappings '.
						' WHERE valuemapid='.$valuemapid.
							' AND value='.zbx_dbstr($value));
		$row = DBfetch($result);
		if($row){
			return $row["newvalue"]." "."($value)";
		}
		return $value;
	}
/*************** END VALUE MAPPING ******************/

/*************** CONVERTING ******************/
	function zbx_stripslashes($value){
		if(is_array($value)){
			foreach($value as $id => $data)
				$value[$id] = zbx_stripslashes($data); 
				// $value = array_map('zbx_stripslashes',$value); /* don't use 'array_map' it buggy with indexes */
		} elseif (is_string($value)){
			$value = stripslashes($value);
		}
		return $value;
	}
	
	function empty2null($var){
		return ($var == "") ? null : $var;
	}
	
	function str2mem($val){
		$val = trim($val);
		$last = strtolower($val{strlen($val)-1});
		switch($last){
			// The 'G' modifier is available since PHP 5.1.0
			case 'g':
				$val *= 1024;
			case 'm':
				$val *= 1024;
			case 'k':
				$val *= 1024;
		}

		return $val;
	}
	
	function mem2str($size){
		$prefix = 'B';
		if($size > 1048576) {	$size = $size/1048576;	$prefix = 'M'; }
		elseif($size > 1024) {	$size = $size/1024;	$prefix = 'K'; }
		return round($size, 6).$prefix;
	}

	/* Do not forget to sync it with add_value_suffix in evalfunc.c! */ 
	function convert_units($value,$units){
// Special processing for unix timestamps
		if($units=="unixtime"){
			$ret=date("Y.m.d H:i:s",$value);
			return $ret;
		}
//Special processing of uptime
		if($units=="uptime"){
			$ret="";
			$days=floor($value/(24*3600));
			if($days>0){
				$value=$value-$days*(24*3600);
			}
			$hours=floor($value/(3600));
			if($hours>0){
				$value=$value-$hours*3600;
			}
			$min=floor($value/(60));
			if($min>0){
				$value=$value-$min*(60);
			}
			if($days==0){
				$ret = sprintf("%02d:%02d:%02d", $hours, $min, $value);
			}
			else{
				$ret = sprintf("%d days, %02d:%02d:%02d", $days, $hours, $min, $value);
			}
			return $ret;
		}
// Special processing for seconds
		if($units=="s"){
			return zbx_date2age(0,$value,true);	
		}

		$u="";

// Special processing for bits (kilo=1000, not 1024 for bits)
		if( ($units=="b") || ($units=="bps")){
			$abs=abs($value);

			if($abs<1000){
				$u="";
			}
			else if($abs<1000*1000){
				$u="K";
				$value=$value/1000;
			}
			else if($abs<1000*1000*1000){
				$u="M";
				$value=$value/(1000*1000);
			}
			else{
				$u="G";
				$value=$value/(1000*1000*1000);
			}
	
			if(round($value) == round($value,2)){
				$s=sprintf("%.0f",$value);
			}
			else{
				$s=sprintf("%.2f",$value);
			}

			return "$s $u$units";
		}


		if($units==""){
			if(round($value) == round($value,2)){
				return sprintf("%.0f",$value);
			}
			else{
				return sprintf("%.2f",$value);
			}
		}

		$abs=abs($value);

		if($abs<1024){
			$u="";
		}
		else if($abs<1024*1024){
			$u="K";
			$value=$value/1024;
		}
		else if($abs<1024*1024*1024){
			$u="M";
			$value=$value/(1024*1024);
		}
		else if($abs<1024*1024*1024*1024){
			$u="G";
			$value=$value/(1024*1024*1024);
		}
		else{
			$u="T";
			$value=$value/(1024*1024*1024*1024);
		}

		if(round($value) == round($value,2)){
			$s=sprintf("%.0f",$value);
		}
		else{
			$s=sprintf("%.2f",$value);
		}

		return "$s $u$units";
	}
/*************** END CONVERTING ******************/

/*************** TABLE SORTING ******************/
	/* function:
	 *      validate_sort_and_sortorder
	 *
	 * description:
	 *      Checking,setting and saving sort params
	 *
	 * author: Aly
	 */
	function validate_sort_and_sortorder($sort=NULL,$sortorder=ZBX_SORT_UP){
		global $page;
		
		$_REQUEST['sort'] = get_request('sort',get_profile('web.'.$page["file"].'.sort',$sort));
		$_REQUEST['sortorder'] = get_request('sortorder',get_profile('web.'.$page["file"].'.sortorder',$sortorder));
		
		if(!is_null($_REQUEST['sort'])){
			$_REQUEST['sort'] = eregi_replace('[^a-z\.\_]','',$_REQUEST['sort']);
			update_profile('web.'.$page["file"].'.sort',		$_REQUEST['sort']);
		}

		if(!str_in_array($_REQUEST['sortorder'],array(ZBX_SORT_DOWN,ZBX_SORT_UP)))
			$_REQUEST['sortorder'] = ZBX_SORT_UP;

		update_profile('web.'.$page["file"].'.sortorder',	$_REQUEST['sortorder']);
	}

	/* function:
	 *      make_sorting_link
	 *
	 * description:
	 *      Creates links for sorting in table header
	 *
	 * author: Aly
	 */
	function make_sorting_link($obj,$tabfield,$url=''){
		global $page;
		
		$sortorder = (isset($_REQUEST['sortorder']) && ($_REQUEST['sortorder'] == ZBX_SORT_UP))?ZBX_SORT_DOWN:ZBX_SORT_UP;
		
		if(empty($url)){
			$url='?';
			$url_params = explode('&',$_SERVER['QUERY_STRING']);
			foreach($url_params as $id => $param){
				if(zbx_empty($param)) continue;
				
				list($name,$value) = explode('=',$param);
				if(zbx_empty($name) || ($name == 'sort') || (($name == 'sortorder'))) continue;
				$url.=$param.'&';
			}
		}
		else{
			$url.='&';
		}
		
		$url.='sort='.$tabfield.'&sortorder='.$sortorder;
		
		if(($page['type'] != PAGE_TYPE_HTML) && defined('ZBX_PAGE_MAIN_HAT')){
			$link = new CLink($obj,$url,null,"javascript: return updater.onetime_update('".ZBX_PAGE_MAIN_HAT."','".$url."');");
		}
		else{
			$link = new CLink($obj,$url);
		}
		
		if(isset($_REQUEST['sort']) && ($tabfield == $_REQUEST['sort'])){
			if($sortorder == ZBX_SORT_UP){
				$img = new CImg('images/general/sort_downw.gif','down',10,10);
			}
			else{
				$img = new CImg('images/general/sort_upw.gif','up',10,10);
			}
			
			$img->AddOption('style','line-height: 18px; vertical-align: middle;');
			$link = array($link,SPACE,$img);
		}		
		
	return $link;
	}
	
	function order_by($def,$allways=''){
		global $page;
	
		if(!empty($allways)) $allways = ','.$allways;
		$sortable = explode(',',$def);
		
		$tabfield = get_request('sort',get_profile('web.'.$page["file"].'.sort',null));
		
		if(is_null($tabfield)) return ' ORDER BY '.$def.$allways;
		if(!str_in_array($tabfield,$sortable)) return ' ORDER BY '.$def.$allways;

		$sortorder = get_request('sortorder',get_profile('web.'.$page["file"].'.sortorder',ZBX_SORT_UP));

	return ' ORDER BY '.$tabfield.' '.$sortorder.$allways;
	}
?>