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: /usr/local/lsws/admin/html.6.2.1/classes/
files >> //usr/local/lsws/admin/html.6.2.1/classes/ConfigFile.php
 <?php

class ConfigFile
{
	private $pageDef;
	private $tblDef;
	//TAG=0, VALUE=1, ELEMENTS=2

	public function __construct()
	{}

	//type = ('serv','vh','admin','tp','ha')
	public function load(&$confData, &$err)
	{
		if ($confData->_type == 'ha'
			&&	!is_file($confData->_path)
			&&  !$this->init_haconfig($confData->_path)) {
			// if not exist, write an empty file
			return false;
		}
		$xmltree = new XmlTreeBuilder();
		$rootNode = &$xmltree->ParseFile($confData->_path, $err);
		if ( $rootNode != null )
		{
			$this->pageDef = DPageDef::GetInstance();
			$this->tblDef = DTblDef::GetInstance();

			$this->load_data($rootNode, $confData);
			switch( $confData->_type ) {
				case 'serv':
					$this->fill_serv($confData);
					break;
				case 'admin':
					$this->fill_listener($confData);
					break;
				case 'vh':
				case 'tp':
					$this->fill_vh($confData);
					break;
				case 'ha':
					break;
			}

			return true;
		}
		error_log($err);
		$confData->_data = [];
		return false;
	}

	function init_haconfig($confpath)
	{
		$fd = fopen($confpath, 'w');
		if ( !$fd )
		{
			error_log("failed to open in write mode for $confpath");
			return false;
		}
		$text = '<?xml version="1.0" encoding="UTF-8"?>'."\n"
		. '<haConfig></haConfig>' . "\n";
		if(fwrite($fd, $text) === false) {
			error_log("failed to write temp config for $confpath");
			return false;
		}
		fclose($fd);
		return true;
	}

	public function save(&$confData)
	{
		$fd = fopen($confData->_path . ".new", 'w');
		if ( !$fd )
		{
			error_log("failed to open in write mode for " . $confData->_path . ".new");
			return false;
		}

		if ( !isset($this->pageDef))
		{
			$this->pageDef = DPageDef::GetInstance();
			$this->tblDef = DTblDef::GetInstance();
		}

		$data = &$this->convert_data($confData);

		$level = 0;
		$result = '<?xml version="1.0" encoding="UTF-8"?>'."\n";
		$this->writeStruct( $result, $level, $data);

		if(fwrite($fd, $result) === false) {
			error_log("failed to write temp config for " . $confData->_path . ".new");
			return false;
		}
		fclose($fd);

		@unlink($confData->_path . ".bak");
		if(!rename($confData->_path, $confData->_path . ".bak")) {
			error_log("failed to rename " . $confData->_path . " to " . $confData->_path . ".bak");
			return false;
		}

		if(!rename($confData->_path . ".new", $confData->_path)) {
			error_log("failed to rename " . $confData->_path . ".new to " . $confData->_path);
			return false;
		}

		return true;
	}

	private function &convert_data($confData)
	{
		$type = $confData->_type;
		$from = $confData->_data;
		$to0 = [];

		if ( $type == 'serv' ) {
		    $t = CLIENT::UTYPE;
		    if (  $t == 'LSWS' ) {
		    	$to = &$to0['httpServerConfig'];
			} else {
				$to = &$to0['loadBalancerConfig'];
			}
		} elseif ( $type == 'vh' ) {
			$to = &$to0['virtualHostConfig'];
		} elseif ( $type == 'tp' ) {
			$to = &$to0['virtualHostTemplate'];
		} elseif ( $type == 'admin' ) {
			$to = &$to0['adminConfig'];
		} elseif ( $type == 'ha' ) {
			$to = &$to0['haConfig'];
		}

		$pages = $this->pageDef->GetFileDef($type);
		$num = count($pages);
		for ( $c = 0 ; $c < $num ; ++$c )
		{
			$page = $pages[$c];
			if ( $page->GetLayerId() == null ){
				$this->convertStruct( $from, $to, $page->GetTids() );
			}
			else {
				$from1 = &DUtil::locateData( $from, $page->GetDataLoc() );
				if ( empty($from1) ) {
					continue;
				}

				$to1 = &DUtil::locateData( $to, $page->GetLayerId() );

				if ( $page->GetHolderIndex() == null )	{
					$this->convertStruct( $from1, $to1, $page->GetTids() );
				} else {
					$keys = array_keys($from1);
					foreach( $keys as $key ) {
						$to2 = [];
						$this->convertStruct( $from1[$key], $to2, $page->GetTids() );
						$to1[] = $to2;
					}
				}
			}
		}
		return $to0;
	}

	private function load_data(&$rootNode, &$confData)
	{

		$holder = &$confData->_data;
		$el = &$rootNode[2];
		$pages = $this->pageDef->GetFileDef($confData->_type);
		$num = count($pages);
		for ( $c = 0 ; $c < $num ; ++$c )
		{
			$page = &$pages[$c];
			if ( $page->GetLayerId() == null ) {
				$this->extractSection( $el, $holder, $page->GetTids() );
			} else {
				$isRepeated = ($page->GetHolderIndex() != null);

				$els = &$this->locateXmlElement( $el, $page->GetLayerId(), $isRepeated );
				if ( count($els) == 0 ) {
					continue;
				}

				$holder1 = &DUtil::locateData( $holder, $page->GetDataLoc() );
				if ( !$isRepeated ) {
					$this->extractSection( $els[0], $holder1, $page->GetTids() );
				} else {
					$innercount = count($els);
					for ( $j = 0 ; $j < $innercount ; ++$j ) {
						$holder2 = [];
						$this->extractSection( $els[$j], $holder2, $page->GetTids() );
						if ($holder2[$page->GetHolderIndex()]) {
							$holder1[$holder2[$page->GetHolderIndex()]->GetVal()] = $holder2;
						} else {
                            error_log("empty page index " . $page->GetHolderIndex() . print_r($page, true));
                            error_log("holder2 is " . print_r($holder2, true));
                            die();
                        }
					}
				}
			}
		}
	}

	private function fill_serv(&$confData)
	{
		$holder = &$confData->_data;
		$runningAs = 'user('. $holder['general']['user']->GetVal() .
			') : group(' . $holder['general']['group']->GetVal() .')' ;
		$holder['general']['runningAs'] = new CVal($runningAs);

        $proc = 1;
        if (CLIENT::UTYPE == 'LSWS' && isset($_SERVER['LSWS_CHILDREN'])) {
            $proc = substr($_SERVER['LSWS_CHILDREN'], 0, 1);
            if ($proc == '9') {
                if (isset($holder['general']['workerProcesses'])) {
                    $proc = 0; // bypass
                } else {
                    $proc = substr($_SERVER['LSWS_CHILDREN'], 2);
                }
            }
        } elseif (CLIENT::UTYPE == 'LSLB' && isset($_SERVER['LSLB_CHILDREN'])) {
            $proc = substr($_SERVER['LSLB_CHILDREN'], 0, 1);
            if ($proc == '9') {
                if (isset($holder['general']['workerProcesses'])) {
                    $proc = 0; // bypass
                } else { // 9:n
                    $proc = substr($_SERVER['LSLB_CHILDREN'], 2);
                }
            }
        }
        if ($proc > 0) {
            $holder['general']['workerProcesses'] = new CVal($proc);
        }

		$this->fill_listener($confData);
	}

	private function fill_listener(&$confData)
	{
		$listeners = &$confData->_data['listeners'];

		if ( empty($listeners)) {
			return;
		}

		$lnames = array_keys($listeners);
		foreach ( $lnames as $ln ) {
			$l = &$listeners[$ln];
            if (isset($l['address'])) {
                $addr = $l['address']->GetVal();
                $pos = strrpos($addr,':');
                if ( $pos ) {
                    $ip = substr($addr, 0, $pos);
                    if ( $ip == '*' ) {
                        $ip = 'ANY';
					}
                    $l['ip'] = new CVal($ip);
                    $l['port'] = new CVal(substr($addr, $pos+1));
                }
            }
		}
	}

	private function fill_vh(&$confData)
	{
		$ctxs = &$confData->_data['context'];
		if (empty($ctxs)) {
			return;
		}
		$keys = array_keys($ctxs);
		$i = 1;
		foreach ($keys as $k) {
			$ctxs[$k]['order'] = new CVal($i);
			++$i;
		}
	}

	private function extractSection( &$el, &$holder, $tids)
	{
		foreach( $tids as $tid ) {
			$tbl = $this->tblDef->GetTblDef($tid);
			$holderIndex = $tbl->_holderIndex;

			$isRepeated = ($holderIndex != null);
			$els = &$this->locateXmlElement($el, $tbl->_layerId, $isRepeated);
			if ( count($els) == 0 ) {
				continue;
			}

			$holder_cur = &DUtil::locateData( $holder, $tbl->_dataLoc );
			$tags = $tbl->GetTags();

			foreach ($els as $e) {
				if ( $isRepeated ) {
					$loader_root = [];
					$loader_cur = &DUtil::locateData( $loader_root, $tbl->_dataLoc );
					$this->extractElement('' , $tags, $e, $loader_cur);

					if ( $tbl->_subTbls != null ) {
						$this->extractSubTbl($e, $loader_root, $tbl);
					}
					if ( $tbl->_linkedTbls != null && isset($tbl->_linkedTbls['file']) ) {
						$this->extractSection($e, $loader_cur, $tbl->_linkedTbls['file']);
					}
					if ($loader_cur[$holderIndex] != null) {
						$holder_cur[ $loader_cur[$holderIndex]->GetVal() ] = $loader_cur;
					}
				} else {
					$this->extractElement('' , $tags, $e, $holder_cur);
                    if ( $tbl->_subTbls != null ) {
                        $this->extractSubTbl($e, $holder_cur, $tbl) ;
                    }
				}
			}
		}
	}

	private function extractSubTbl($el, &$holder, $tbl)
	{
		$holder1 = &DUtil::locateData( $holder, $tbl->_dataLoc );
		$tid = DUtil::getSubTid($tbl->_subTbls, $holder1);

		if ( $tid == null ) {
			return;
		}

        if ( is_array($tid) ) {
            $tids = $tid;
            $holder2 = [];
            $this->extractSection($el, $holder2, $tids) ;

            foreach ( $holder2 as $key => $val ) {
                $holder1[$key] = $val ;
            }
        }
        else {
            $tids =  array( $tid ) ;
            $holder2 = [] ;
            $this->extractSection($el, $holder2, $tids) ;

            $holder3 = &DUtil::locateData($holder2, $tbl->_dataLoc) ;
            $keys = array_keys($holder3) ;
            foreach ( $holder3[$keys[0]] as $key => $val ) {
                $holder1[$key] = $val ;
            }
        }
	}

	private function &locateXmlElement(&$el, $layerId, $isRepeated)
	{
		$els = [];
		if ($layerId == null) {
			$els[] = &$el;
		} else {
			$layerIds = explode(':', $layerId);
			$depth = count($layerIds);
			$el1 = &$el;

			for ($layer = 0; $layer < $depth; ++$layer) {
				$innercount = count($el1);
				$tag = $layerIds[$layer];

				$found = false;
				for ($i = 0; $i < $innercount; ++$i) {
					if ($el1[$i][0] == $tag) {
						$found = true;
						if (($layer + 1) == $depth) {
							$els[] = &$el1[$i][2];
							if (!$isRepeated)
								break;
						} else {
							$el1 = &$el1[$i][2];
							break;
						}
					}
				}
				if (!$found)
					break;
			}
		}

		return $els;
	}

	private function extractElement($prefix, $tags, $el, &$data)
	{
		$ids = array_keys($tags);

		foreach ($el as $e) {
			$name = $e[0];
			if (in_array($name, $ids)) {
				if (is_array($tags[$name])) {
					$prefix1 = $prefix . $name . ':';
					$this->extractElement($prefix1, $tags[$name], $e[2], $data);
				} else {
					$index = $prefix . $name;
					if ($tags[$name] == 2) {
						$data[$index][] = new CVal($e[1]);
					} else {
						$data[$index] = new CVal($e[1]);
					}
				}
			}
		}
	}

	private function writeStruct(&$result, &$level, &$data)
	{
		$keys = array_keys($data);
		foreach ($keys as $key) {
			$data1 = &$data[$key];
			if (is_array($data1)) {
				if (isset($data1[0])) { //numeric
					$c = count($data1);
					for ($i = 0; $i < $c; ++$i) {
						if (is_array($data1[$i])) {
							$result .= $this->xmlTagS($level, $key);
							$this->writeStruct($result, $level, $data1[$i]);
							$result .= $this->xmlTagE($level, $key);
						} else {
							$result .= $this->xmlTag($level, $key, $data1[$i]);
						}
					}
				} else {
					$result .= $this->xmlTagS($level, $key);
					$this->writeStruct($result, $level, $data1);
					$result .= $this->xmlTagE($level, $key);
				}
			} else {
				if (isset($data1)) {
					$result .= $this->xmlTag($level, $key, $data1);
				}
			}
		}
	}

	private function convertStruct( &$from, &$to, $tids )
	{
		foreach( $tids as $tid ) {

			$tbl = $this->tblDef->GetTblDef($tid);
			$fholder = &DUtil::locateData($from, $tbl->_dataLoc);

			if ( !isset($fholder) )	{
				continue;
			}

			$holder = &DUtil::locateData($to, $tbl->_layerId);

			if ( $tbl->_holderIndex != null ) {
				$fkeys = array_keys( $fholder );
				foreach ( $fkeys as $fkey )	{
					$data = [];
					$from1 = &$fholder[$fkey];

					$this->convertOneTbl($from1, $data, $tbl);
					$holder[] = $data;
				}
			} else {
				$this->convertOneTbl($fholder, $holder, $tbl);
			}

		}
	}

	private function convertSubTbl($from, &$to, $tbl)
	{
		$tid1 = DUtil::getSubTid($tbl->_subTbls, $from);
		if ($tid1 == null) {
			return;
		}

		if (is_array($tid1)) {
			$this->convertStruct($from, $to, $tid1);
		} else {
			$tbl1 = $this->tblDef->getTblDef($tid1);
			$this->convertOneTbl($from, $to, $tbl1);
		}
	}

	private function convertOneTbl($from, &$to, $tbl)
	{
		foreach ($tbl->_dattrs as $attr) {
			if ($attr->_type != 'action' && $attr->_FDE[0] == 'Y') {
				$this->convertCopy($from, $to, $attr);
			}
		}

		if ( $tbl->_subTbls != null ) {
			$this->convertSubTbl($from, $to, $tbl);
		}

		if ( $tbl->_linkedTbls != null && isset($tbl->_linkedTbls['file']) ) {
			$this->convertStruct($from, $to, $tbl->_linkedTbls['file']);
		}

	}

	private function convertOneLevel($from, &$to, $attrs)
	{
		foreach ($attrs as $attr) {
			if ($attr->_type != 'action' && $attr->_FDE[0] == 'Y') {
				$this->convertCopy($from, $to, $attr);
			}
		}
	}

	private function convertCopy($from, &$to, $attr)
	{
		$attr_key = $attr->_key;
		if (!isset($from[$attr_key]) && $attr->_allowNull) {
			return;
		}

		$prepared = null;
		if (isset($from[$attr_key]) && is_array($from[$attr_key])) {
			foreach ($from[$attr_key] as $i) {
				$prepared[] = $i->GetVal();
			}
		} elseif (isset($from[$attr_key]) && $from[$attr_key]->HasVal()) {
			$prepared = $from[$attr_key]->GetVal();
		}

		if (strpos($attr_key, ':') === false) {
			$to[$attr_key] = $prepared;
		} else {
			$to1 = &DUtil::locateData($to, $attr_key);
			$to1 = $prepared;
		}
	}

	private function xmlTag($level, $tag, $value)
	{
		$val = ($value !== null) ? htmlspecialchars($value) : '';
		if (substr($val, 0, 1) == "\n") { // textarea1, start and end with \n
			return str_repeat('  ', $level) . "<$tag>$val" . str_repeat('  ', $level) . "</$tag>\n";
		} elseif (strpos($val, "\n") !== false) { // old textarea, add \n at begin and end
			return str_repeat('  ', $level) . "<$tag>\n$val\n" . str_repeat('  ', $level) . "</$tag>\n";
		}
		return str_repeat('  ', $level) . "<$tag>$val</$tag>\n";
	}

	private function xmlTagS(&$level, $tag)
	{
		return str_repeat('  ', $level++) . "<$tag>\n";
	}

	private function xmlTagE(&$level, $tag)
	{
		return str_repeat('  ', --$level) . "</$tag>\n";
	}

}
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