MyShaarli/plugins/myShaarli/myShaarli.php

<?php

/**
 * Plugin externalThumbshot
 */

 /**
  * Init function, return an error if the server is not set.
  *
  * @param $conf ConfigManager instance.
  *
  * @return array Eventual error.
  */
 function myShaarli_init($conf)
 {
     if (empty($conf->get('plugins.ExternalThumbshot_URL'))) {
         $error = 'myShaarli plugin error: '.
             'Please define the "ExternalThumbshot_URL" setting in the plugin administration page.';
         return array($error);
     }
     if ($conf->get('resource.theme') !== 'myShaarli' AND $conf->get('resource.theme') !== 'myShaarli_Columns') {
         $error = 'myShaarli plugin: '.
             'This plugin need modification of template. Use myShaarli theme for test.';
         return array($error);
     }
 }


/**
 * Add externalThumbshot icon to link_plugin when rendering linklist.
 *
 * @param mixed $data - linklist data.
 *
 * @return mixed - linklist data with readityourself plugin.
 */

function hook_myShaarli_render_linklist($data,$conf)
{
    $thumUrl = $conf->get('plugins.ExternalThumbshot_URL');
    if(!empty($conf->get('plugins.ExternalThumbshot_KEY'))){
        $key = $conf->get('plugins.ExternalThumbshot_KEY');
    }
    if (!isset($thumUrl)) {
        return $data;
    }

    foreach ($data['links'] as &$value) {
        $thumb = computeThumbnail($conf, $value['url']);
        if(empty($thumb)){
            if(!empty($key)){
                $hmac = '&amp;hm='.hash_hmac('sha1', $value['url'], $key).'&amp;url=';
            } else {
                $hmac = null;
            }

          $value['thumbnail'] = '<img class="b-lazy" src="#" data-src="'.$thumUrl.$hmac.urlencode($value['url']).'" alt="Thumbnail" width="120" height="90">';
        } else {
          $value['thumbnail'] = '<img class="b-lazy" src="#" data-src="'.$thumb['src'].'" alt="Thumbnail" width="120" height="90">';
        }
    }
    return $data;
}

/**
 * NOT WORKING
 * To poor performance
 * Need fix
*/

function returnFavicon($url)
{
    $faviconHash = md5($url);
    $path = substr($faviconHash, 0, 2).'/'.substr($faviconHash, 2, 2);
    $faviconPath = 'cache/'.$path.'/'.$faviconHash.'.ico';
    if (file_exists($faviconPath)) {
        $content = file_get_contents($faviconPath);
        return '<img class="favicon" alt="favicon" src="data:image/ico;base64,'.base64_encode($content).'"/>';
    }
    if (file_exists('cache/'.$path.'/'.$faviconHash)) {
        return;
    }
    require_once 'plugins/myShaarli/favicon/DataAccess.php';
    require_once 'plugins/myShaarli/favicon/Favicon.php';
    $favicon = new \Favicon\Favicon();
    $favicon->cache(array('dir' => 'cache'));
    $urlOfFavicon = $favicon->get($url);
    if (!$urlOfFavicon) {
            mkdir('cache/'.$path, 0777, true);
            touch('cache/'.$path.'/'.$faviconHash);
            return;
        }
    if (!is_dir('cache/'.$path.'/')) {
        mkdir('cache/'.$path, 0777, true);
    }
    $content = file_get_contents($urlOfFavicon);
    file_put_contents($faviconPath, $content);
    return '<img  class="favicon" alt="favicon" src="data:image/ico;base64,'.base64_encode($content).'"/>';
}