e107inc/e107

<?php
 /**
 * Copyright (C) e107 Inc (e107.org), Licensed under GNU GPL (http://www.gnu.org/licenses/gpl.txt)
 * 
 * YouTube BBcode
 */
 
if (!defined('e107_INIT')) { exit; }

/**
 *    Youtube handling
 *
 * [youtube=tiny|small|medium|large|huge or width,height]ID{&query options}[/youtube]
 * 
 * examples: 
 * [youtube=560,340]N2wivHYCRho?hd=1&color1=&color2=&cc_load_policy=0&autoplay=0[/youtube]
 * [youtube=big|privacy]N2wivHYCRho?hd=1&hl=en[/youtube]
 * 
 * Will also convert Youtube embed code, and youtube 'watch' urls. (http://www.youtube.com/watch?v=)
 * Youtube ID is the only required data!
 * TODO - use swfobject JS - XHTML validation
 */

/**
 *    Class-based bbcode validation
 *
 *    Class name must be 'bb_'.bbname - where bbname is the name of the bbcode. (Note some bbcodes begin '_', and this is retained)
 *
 *    This class must contain exactly two public methods:
 *        toDB($code_text, $parm) - called prior to text being saved
 *        toHTML($code_text, $parm) - called prior to text being displayed
 */

class bb_youtube extends e_bb_base
{

    /**
     *    Called prior to save
     *
     *    If user has posted the complete youtube 'copy and paste' text between the tags, parse it and generate the relevant bbcode
     */
    function toDB($code_text, $parm)
    {
        $bbpars = array();
        $widthString = '';
        $parm = trim($parm);
        
        // Convert Simple URLs. 
        if(strpos($code_text,"youtube.com/watch?v=")!==FALSE || strpos($code_text,"youtube.com/watch#!v=")!==FALSE )
        {
            $validUrls = array("http://", "https://", "www.","youtube.com/watch?v=","youtube.com/watch#!v=");
            $tmp = str_replace($validUrls,'',$code_text);
            $qrs = explode("&",$tmp);        
            $code_text = $qrs[0];
            unset($qrs);        
        }
            
        if ($parm)
        {
            if (strpos($parm, '|') !== FALSE)
            {
                list($widthString, $parm) = explode('|', $parm);
            }
            elseif (in_array($parm, array('tiny', 'small', 'medium','large', 'big', 'huge')) || (strpos($parm, ',') !== FALSE))
            {    // Assume we're just setting a width
                $widthString = $parm;
                $parm = '';
            }
            if ($parm)
            {
                $bbpars = explode('&', $parm);
            }
        }
        
        /*
        echo '<br />Parm= '.$parm;
        echo "<br />COde= ".htmlspecialchars($code_text);
        echo "<br />Width= ".$widthString;
        */
        
        $params = array();                                        // Accumulator for parameters from youtube code
        $ok = 0;
        if (strpos($code_text, '<') === FALSE)
        {    // 'Properly defined' bbcode (we hope)
            $picRef = $code_text;
        }
        else
        {
            //libxml_use_internal_errors(TRUE);
            if (FALSE === ($info = simplexml_load_string($code_text)))
            {
                //print_a($matches);
                //$xmlErrs = libxml_get_errors();
                //print_a($xmlErrs);
                $ok = 1;
            }
            else
            {
                $info1 = (array)$info;
                if (!isset($info1['embed']))
                {
                    $ok = 2;
                }
                else
                {
                    $info2 = (array)$info1['embed'];
                    if (!isset($info2['@attributes']))
                    {
                        $ok = 3;
                    }
                }
            }
            if ($ok != 0)
            {
                print_a($info);
                return '[sanitised]'.$ok.'B'.htmlspecialchars($matches[0]).'B[/sanitised]';
            }
            $target =  (array)$info2['@attributes'];
            unset($info);
            $ws = varset($target['width'], 0);
            $hs = varset($target['height'], 0);
            if (($ws == 0) || ($hs == 0) || !isset($target['src'])) return  '[sanitised]A'.htmlspecialchars($matches[0]).'A[/sanitised]';
            if (!$widthString)
            {
                $widthString = $ws.','.$hs;            // Set size of window
            }
            list($url, $query) = explode('?', $target['src']);
            if (strpos($url, 'youtube-nocookie.com') !== FALSE)
            {
                $bb_params[] = 'privacy';
            }
            
            parse_str($query, $vals);        // Various options set here
                                                
            if (varset($vals['allowfullscreen'], 'true') != 'true')
            {
                $params[] = 'fs=0';
            }
            if (varset($vals['border'], 0) != 0)
            {
                $params[] = 'border=1';
            }
            if (varset($vals['rel'], 1) != 1)
            {
                $params[] = 'rel='.intval($vals['rel']);
            }
            if (varset($vals['hd'], 1) != 0)
            {
                $params[] = 'hd='.intval($vals['hd']);
            }
            if (varset($vals['hl'], 1) != 0)
            {
                $params[] = 'hl='.$vals['hl'];
            }
            if (varset($vals['color1'], 1) != 0)
            {
                $params[] = 'color1='.$vals['color1'];
            }
            if (varset($vals['color2'], 1) != 0)
            {
                $params[] = 'color2='.$vals['color2'];
            }
            if (varset($vals['cc_load_policy'], 1) != 0)
            {
                $params[] = 'cc_load_policy='.intval($vals['cc_load_policy']);
            }
            if (ADMIN && varset($vals['autoplay'], 1) != 0)
            {
                $params[] = 'autoplay='.intval($vals['autoplay']);
            }

            $picRef = substr($url, strrpos($url, '/') + 1);
        }


        $yID = preg_replace('/[^0-9a-z]/i', '', $picRef);
        //if (($yID != $picRef) || (strlen($yID) > 20))
    //    {    // Possible hack attempt
    //    }
    //    $params = array_merge($params, $bbpars);            // Any parameters set in bbcode override those in HTML
        // Could check for valid array indices here
        $paramString = implode('&', $params);
        if ($paramString) $picRef .= '?'.$paramString;
        if($widthString)
        {
            $widthString = "=".$widthString;
            if(count($bbpars))
            {
                $widthString .= "|".implode("&",$bbpars);
            }
        }
        $ans = '[youtube'.$widthString.']'.$picRef.'[/youtube]';
        return $ans;
    }



    /**
     *    Translate youtube bbcode into the appropriate <EMBED> object
     */
    function toHTML($code_text, $parm)
    {
        if(empty($code_text)) return '';

        $t = explode('|', $parm, 2);

        $dimensions = varset($t[0]);
        $tmp = varset($t[1]);

        if($tmp)
        {
            parse_str(varset($tmp, ''), $bbparm);
        }
        
        if(strpos($code_text,"&")!==FALSE && strpos($code_text,"?")===FALSE) // DEPRECATED
        {
            $parms = explode('&', $code_text, 2);    
        }
        else
        {
            $parms = explode('?', $code_text, 2);    // CORRECT SEPARATOR
        }
        

        $code_text = $parms[0];
            
        parse_str(varset($parms[1], ''), $params);
        
    //    print_a($params);

        if(empty($dimensions)) $dimensions = 'medium'; // (default as per YouTube spec)
        // formula: width x (height+25px)

        switch ($dimensions) 
        {
            case 'tiny':
                $params['w'] = 320; // 200;
                $params['h'] = 205; // 180;
            break;
            
            case 'small':
                $params['w'] = 560; // 445;
                $params['h'] = 340; // 364;
            break;
            
            case 'medium':
                $params['w'] = 640; // 500;
                $params['h'] = 385; // 405;
            break;
            
            case 'big':
            case 'large':
                $params['w'] = 853; // 660;
                $params['h'] = 505; // 525;
            break;
            
            case 'huge':
                $params['w'] = 1280; // 980;
                $params['h'] = 745; // 765;
            break;
            
            default: // maximum 1920 x 1080 (+25)
                $dim = explode(',', $dimensions, 2);
                $params['w'] = (integer) varset($dim[0], 445);
                if($params['w'] > 1920 || $params['w'] < 100) $params['w'] = 640;
                
                $params['h'] = (integer) varset($dim[1], 364);
                if($params['h'] > 1105 || $params['h'] < 67) $params['h'] = 385;
            break;
        }
    
    
        $yID = preg_replace('/[^0-9a-z\-_\&\?]/i', '', $code_text);

        $url = isset($bbparm['privacy']) ? 'https://www.youtube-nocookie.com/v/' : 'https://www.youtube.com/v/';
        $url .= $yID.'?';

        if(isset($params['nofull']) || !varset($params['fs'])) 
        {
            $fscr = 'false';
            $url = $url.'fs='.intval($params['fs']);
        } 
        else 
        {
            $fscr = 'true';
            $url = $url.'fs=1';
        }
        

        
        if(isset($params['border'])) $url = $url.'&amp;border='.intval($params['border']);
        if(isset($params['norel'])) // BC non-standard val. 
        {
            $url = $url.'&amp;rel=0';    
        } 
        elseif(isset($params['rel']))
        {
            $url = $url.'&amp;rel='.intval($params['rel']);    
        }
        
        if(isset($params['hd'])) $url = $url.'&amp;hd='.intval($params['hd']);
        
        $hl = 'en_US';
        
        if(isset($params['hl']))
        {
            $params['hl'] = preg_replace('/[^0-9a-z\-_]/i', '', $params['hl']);
            if(strlen($params['hl']) == 2 || strlen($params['hl']) == 5)
            {
                $hl = $params['hl'];
            }
        }
        
        $url = $url.'&amp;hl='.$hl;
        $color = array();
        if(isset($params['color1'])) $color[1] = $params['color1'];
        if(isset($params['color2'])) $color[2] = $params['color2'];
        foreach ($color as $key => $value)
        {
            if (ctype_xdigit($value) && strlen($value) == 6)
            {
                $url = $url.'&amp;color'.$key.'='.$value;
            }
        }
        
        if(isset($params['cc_load_policy']))
        {
            $url .= "&amp;cc_load_policy=".intval($params['cc_load_policy']);
        }
        
        if(isset($params['autoplay']))
        {
            $url .= "&amp;autoplay=".intval($params['autoplay']);
        }
        
        $class = "bbcode ".e107::getBB()->getClass('youtube'); // consistent classes across all themes. 
        
        $ret = "<!-- Start YouTube-".$dimensions."-".$yID." -->\n";    // <-- DO NOT MODIFY - used for detection by bbcode handler.     
        
        
        if(e107::getConfig()->get('youtube_bbcode_responsive') == 1) // Responsive Mode. 
        {
            $ret .= e107::getParser()->toVideo($yID.".youtube");    
        }
        else // Legacy Mode. 
        {
            $ret .= '<object class="'.$class.'" width="'.$params['w'].'" height="'.$params['h'].'" >
                <param name="movie" value="'.$url.'" />
                <param name="allowFullScreen" value="'.$fscr.'" />
                <param name="allowscriptaccess" value="always" />
                <param name="wmode" value="transparent" />
            ';        
                
            // Not XHTML - but needed for compatibility. 
            $ret .= '<embed class="'.$class.'" src="'.$url.'" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="'.$fscr.'" wmode="transparent" width="'.$params['w'].'" height="'.$params['h'].'" />';
            
            $ret .= '</object>';
        }
        
        $ret .= "<!-- End YouTube -->"; // <-- DO NOT MODIFY. 


        return $ret;
    }

    // Wysiwyg representation of bbcode render. 
    function toWYSIWYG($code_text,$parm)
    {
        //eg. an image of the video thumbnail    
    }
}

?>