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index.php

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  • index.php 5.54 KiB
    <?php
    
    $search_engine_id = '015236299699564929946:nk1siew10ie';
    
    $config_file = __DIR__ . '/../config.sample.php';
    if (file_exists(__DIR__ . '/../config.inc.php')) {
        $config_file = __DIR__ . '/../config.inc.php';
    }
    
    require_once $config_file;
    
    use UNL\Templates\Templates;
    
    $isEmbed = isset($_GET['embed']) && $_GET['embed'];
    
    // While the site proper is skinned with a specific version, the templates used
    // used in embed search need to be supported in legacy sites.
    // ?embed=1 : 4.1
    // ?embed=5.0 : 5.0
    $templatePath = 'templates/4.1/';
    if ($isEmbed && $_GET['embed'] === '5.0') {
      $templatePath = 'templates/5.0/';
    }
    
    function renderTemplate($file, $params = array())
    {
        ob_start();
        extract($params);
        include $file;
        return ob_get_clean();
    }
    
    function loadDefaultSections($page)
    {
        $page->titlegraphic = 'UNL Search';
        $page->breadcrumbs = str_replace('Department', 'Search', $page->breadcrumbs);
        $page->navlinks = file_get_contents('https://www.unl.edu/ucomm/sharedcode/navigation.html');
        $page->contactinfo = renderTemplate('templates/local-footer.tpl.php');
        $page->affiliation = '';
    
        //Convert relative paths to absolute
        $page->navlinks = UNL_Search::removeRelativePaths($page->navlinks, 'https://www.unl.edu/');
    }
    
    $localScriptUrl = './js/search.min.js?v=4.1.20';
    $pageTemplate = 'Fixed';
    
    if (UNL_Search::$mode === 'debug') {
        $pageTemplate = 'Local';
        $localScriptUrl = './js/search.js';
    }
    
    $page = Templates::factory($pageTemplate, Templates::VERSION_4_1);
    
    if (!$isEmbed) {
        if (file_exists(__DIR__ . '/wdn/templates_4.1')) {
            $page->setLocalIncludePath(__DIR__);
        }
    
        $page->doctitle = '<title>Search | University of Nebraska&ndash;Lincoln</title>';
        $page->head = '<link rel="home" href="./" />';
        $page->pagetitle = '';
        $page->breadcrumbs = renderTemplate('templates/breadcrumbs.tpl.php');
    }
    
    if ($isEmbed && $_GET['embed'] === '5.0') {
      $page->addStyleSheet('css/search-5.0.css?v=20180901');
    } else {
      $page->addStyleSheet('css/search.css?v=20180901');
    }
    
    $localResults = '';
    $context = '';
    
    //u is referring site
    if (isset($_GET['u']) && $scanned = UNL_Search::getScannedPage($_GET['u'])) {
        // Add local site search results
        // we're scrapping the navigation and other content from the originatting site.
        if (!$isEmbed) {
            if (isset($scanned->titlegraphic)) {
                //require_once 'HTMLPurifier.auto.php';
                $config = HTMLPurifier_Config::createDefault();
                $config->set('Cache.SerializerPath', '/tmp');
    
                //Trick the purifier into accepting HTML5 elements/attributes
                $config->set('HTML.DefinitionID', 'html5-definitions'); // unqiue id
                $config->set('HTML.DefinitionRev', 1);
                if ($def = $config->maybeGetRawHTMLDefinition()) {
                    //Allow everything to have a role
                    $def->addAttribute('*', 'role', 'Text');
                }
    
                $purifier = new HTMLPurifier($config);
    
                $page->head        .= '<link rel="home" href="'.htmlentities($_GET['u'], ENT_QUOTES).'" />';
                $page->titlegraphic = $purifier->purify(str_replace(array('<h1>', '</h1>'), '', $scanned->titlegraphic));
                $page->affiliation = '';
    
                foreach (array('breadcrumbs', 'navlinks', 'leftcollinks', 'contactinfo', 'affiliation') as $region) {
                    if (isset($scanned->{$region}) && !empty($scanned->{$region})) {
                        $scannedContent = $scanned->{$region};
                        switch ($region) {
                            case 'breadcrumbs':
                            case 'navlinks':
                                $scannedContent = UNL_Search::removeRelativePaths($scannedContent, $_GET['u']);
                                break;
                            case 'contactinfo':
                                $scannedContent = preg_replace('#<h3>.*</h3>#', '', $scannedContent);
                                break;
                        }
    
                        $page->{$region} = $purifier->purify($scannedContent);
                    }
                }
            } else {
                loadDefaultSections($page);
            }
        }
    
        if (isset($_GET['cx'])) {
            // Use their custom search engine instead of the linked one.
            $search_engine_id = $_GET['cx'];
        } else {
            // send the site value as the context to search on
            $context = $_GET['u'];
        }
    
        $localResults = renderTemplate($templatePath . 'google-results.tpl.php', array(
            'title' => $page->titlegraphic,
            'id' => 'local_results',
        ));
    } elseif (!$isEmbed) {
        // Default search for no referring site.
        loadDefaultSections($page);
    }
    
    $maincontent = '';
    if (!$isEmbed) {
        $maincontent .= renderTemplate('templates/search-form.tpl.php', array('local_results' => $localResults));
    }
    
    $maincontent .= renderTemplate($templatePath . 'search-results.tpl.php', array(
        'isEmbed' => $isEmbed,
        'local_results' => $localResults
    ));
    
    $initialQuery = json_encode(isset($_GET['q']) ? $_GET['q'] : '');
    $context = json_encode($context);
    
    $maincontent .= renderTemplate($templatePath . 'end-scripts.tpl.php', array(
        'localScriptUrl' => $localScriptUrl,
        'googleLoaderUrl' => 'https://cse.google.com/cse.js?cx=' . $search_engine_id,
        'initialQuery' => $initialQuery,
        'localContext' => $context,
    ));
    
    if (!$isEmbed) {
        $page->maincontentarea = $maincontent;
        echo $page;
        exit;
    }
    
    $template = $templatePath . 'embed.tpl.php';
    
    if (UNL_Search::$mode === 'debug') {
        $template = $templatePath . 'embed-debug.tpl.php';
    }
    
    echo renderTemplate($template, array(
        'head' => $page->head,
        'maincontent' => $maincontent
    ));