mirror of
https://github.com/gtbu/Typesetter-5.3-p8.git
synced 2024-11-11 01:44:02 +01:00
304 lines
7.1 KiB
PHP
304 lines
7.1 KiB
PHP
<?php
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namespace gp\special;
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defined('is_running') or die('Not an entry point...');
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class Missing extends \gp\special\Base{
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public $datafile;
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public $error_data = array();
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public $requested;
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public function Init(){
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$this->datafile = '_site/error_data';
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$this->error_data = \gp\tool\Files::Get($this->datafile,'error_data');
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$this->error_data += array(
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'redirects' => array(
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)
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);
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}
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public function __construct($args){
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global $langmessage;
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parent::__construct($args);
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$this->Init();
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$this->requested = $this->page->requested;
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}
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public function RunScript(){
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$cmd = \gp\tool::GetCommand();
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$this->RunCommands($cmd);
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}
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public function DefaultDisplay(){
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if( $this->page->gp_index !== 'special_missing' ){
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$this->CheckRedirect();
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$this->CheckSimilar();
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}
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$this->Get404();
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}
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/**
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* Redirect the request if a redirection entry matches the requested page
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*
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*/
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public function CheckRedirect(){
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if( is_null($this->requested) ){
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return;
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}
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$parts = explode('/',$this->requested);
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$first_part = array_shift($parts);
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if( !isset($this->error_data['redirects'][$first_part]) ){
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return;
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}
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$target = $this->error_data['redirects'][$first_part]['target'];
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$target = $this->GetTarget($target);
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if( $target === false ){
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return;
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}
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if( !empty($parts) && is_string($target) ){
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$target .= '/'.implode('/',$parts);
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}
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$code = $this->error_data['redirects'][$first_part]['code'];
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\gp\tool::Redirect($target,$code);
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}
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/**
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* Redirect the request if the requested page closely matches an existing page
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* If it's just a difference of case, then the similarity will be 100%
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*
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*/
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public function CheckSimilar(){
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global $config;
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$requested = trim($this->requested,'/');
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$similar = $this->SimilarTitleArray($requested);
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$first_title = key($similar);
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$first_percent = current($similar);
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if( $config['auto_redir'] > 0 && $first_percent >= $config['auto_redir'] ){
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$redirect = \gp\tool::GetUrl($first_title,http_build_query($_GET),false);
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\gp\tool::Redirect($redirect);
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}
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}
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/**
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* Translate the $target url to a url that can be used with Header() or in a link
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*
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* @param string $target The user supplied value for redirection
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* @param boolean $get_final If true, GetTarget() will check for additional redirection and $target existence before returning the url. Maximum of 10 redirects.
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* @return string|false
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*/
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public function GetTarget($target,$get_final = true){
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global $gp_index;
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static $redirects = 0;
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if( empty($target) ){
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return \gp\tool::GetUrl('');
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}
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if( !$this->isGPLink($target) ){
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return $target;
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}
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if( !$get_final ){
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return \gp\tool::GetUrl($target);
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}
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//check for more redirects
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if( isset($this->error_data['redirects'][$target]) ){
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$redirects++;
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if( $redirects > 10 ){
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return false;
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}
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$target = $this->error_data['redirects'][$target]['target'];
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return $this->GetTarget($target);
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}
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//check for target existence
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if( isset($gp_index[$target]) ){
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return \gp\tool::GetUrl($target);
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}
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$scripts = \gp\admin\Tools::AdminScripts();
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if( isset($scripts[$target]) ){
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return \gp\tool::GetUrl($target);
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}
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return false;
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}
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public function isGPLink($target){
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//has a url scheme (aka protocol)
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$reg = '#^[a-zA-Z][a-zA-Z0-9\+\.\-]+:#';
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if( preg_match($reg,$target,$matches) ){
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return false;
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}
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//strings beginning with / could be gplinks, they could also links to non-cms managed pages
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// we could do additional testing, but we could never be certain what the user intent is
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if( strpos($target,'/') === 0 ){
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return false;
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}
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return true;
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}
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public function Get404(){
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global $langmessage,$page;
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\gp\tool\Output::AddHeader('Not Found',true,404);
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$page->head .= '<meta name="robots" content="noindex,nofollow" />'; //this isn't getting to the template because $page isn't available yet
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//message for admins
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if( \gp\tool::LoggedIn() ){
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if( $this->requested && \gp\tool::SpecialOrAdmin($this->requested) === false ){
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$with_spaces = htmlspecialchars($this->requested);
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$link = \gp\tool::GetUrl('Admin/Menu/Ajax','cmd=AddHidden&redir=redir&title='.rawurlencode($this->requested)).'" title="'.$langmessage['create_new_file'].'" data-cmd="gpabox';
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$message = sprintf($langmessage['DOESNT_EXIST'],$with_spaces,$link);
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msg($message);
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}
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}
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echo '<div class="GPAREA filetype-special_missing">';
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//Contents of 404 page
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$wrap = \gp\tool\Output::ShowEditLink('Admin/Missing');
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if( $wrap ){
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echo \gp\tool\Output::EditAreaLink($edit_index,'Admin/Missing',$langmessage['edit'],'cmd=edit404',' title="'.$langmessage['404_Page'].'" ');
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echo '<div class="editable_area" id="ExtraEditArea'.$edit_index.'">'; // class="edit_area" added by javascript
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}
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echo self::Get404Output();
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if( $wrap ){
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echo '</div>';
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}
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echo '</div>';
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}
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/**
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* Return the custom 404 page content if it exists, otherwise return the default content
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*
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*/
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public function Get404Output(){
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if( isset($this->error_data['404_TEXT']) ){
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$text = $this->error_data['404_TEXT'];
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}else{
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$text = self::DefaultContent();
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}
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return str_replace('{{Similar_Titles}}',$this->SimilarTitles(),$text);
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}
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/**
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* Get a comma separated list of links to titles similar to the requested page
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* @return string
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*
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*/
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public function SimilarTitles(){
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$similar = $this->SimilarTitleArray($this->requested);
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$similar = array_slice($similar,0,7,true);
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$result = '';
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foreach($similar as $title => $percent_similar){
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if ( $title === key($similar) || $percent_similar > 10 ) {
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$result .= \gp\tool::Link_Page($title).', ';
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}
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}
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return rtrim($result,', ');
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}
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/**
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* Get a list of existing titles similar to the requested page
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* @param string $title of requested page
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* @return array of similar titles reverse-numerical sorted by similarity (percent)
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*
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*/
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public function SimilarTitleArray($title){
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global $gp_index, $gp_titles;
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$similar_titles = [];
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$lower = str_replace(' ','_',strtolower($title));
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foreach($gp_index as $title => $index){
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//skip 'special_missing' page
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if( $index == 'special_missing' ){
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continue;
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}
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//skip private pages when not logged-in
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if( !\gp\tool::LoggedIn() && isset($gp_titles[$index]['vis']) ){
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continue;
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}
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similar_text($lower,mb_strtolower($title),$percent);
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$similar_titles[$index] = [
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'title' => $title,
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'percent' => $percent,
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];
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}
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uasort($similar_titles, function($a, $b) {
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return $b['percent'] - $a['percent'];
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});
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$similar_titles = \gp\tool\Plugins::Filter('SimilarTitles', [$similar_titles]);
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$similar = [];
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foreach( $similar_titles as $similar_title ){
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$similar[$similar_title['title']] = $similar_title['percent'];
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}
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return $similar;
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}
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/**
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* Returnt the default content of the 404 page
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*
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*/
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public function DefaultContent(){
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global $langmessage;
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$text = '<h2>'.$langmessage['Not Found'].'</h2>';
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$text .= '<p>';
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$text .= $langmessage['OOPS_TITLE'];
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$text .= '</p>';
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$text .= '<p>';
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$text .= '<b>'.$langmessage['One of these titles?'].'</b>';
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$text .= '<div class="404_suggestions">{{Similar_Titles}}</div>';
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$text .= '</p>';
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return $text;
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}
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}
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