<?
/* Megavideo Downloader
   luruke.
   
    @date = 12/02/08
   	@mail = hide@address.com
   	
   	Usage:
   	
   		$obj = new Megavideo( ID or URL );	//http://www.megavideo.com/?v=7G4OHAUW or 7G4OHAUW
   		$obj->get( INFO );					//if is empty return an array with all info else you can select the info
   		
   		INFOS:
   		
   		URL.............Url with you can download the flv video
   		SIZE............The size (MB) of video
		TITLE...........Title of video
		DURATION........Duration of video in minutes
		SERVER..........Server of video
		DESCRIPTION.....Description of video
		ADDED...........Date of added
		USERNAME........Username of uploader
		CATEGORY........Category of video
		VIEWS...........Number of views
		COMMENTS........Number of comments
		FAVORITED.......Number of favorites by users
		RATING..........Rate of video

greetz evilsocket 4 the idea.
*/

class Megavideo
{

			function __construct($url)
			{
					preg_match('#\?v=(.+?)$#', $url, $id);
					
					$this->id = $id[1]?$id[1]:$url;
					
						$this->getxml();
						
							$parse = array	(	'runtimehms'	=>	'duration',
												'size'			=>	'size',
												's'				=>	'server',
												'title'			=>	'title',
												'description'	=>	'description',
												'added'			=>	'added',
												'username'		=>	'username',
												'category'		=>	'category',
												'views'			=>	'views',
												'comments'		=>	'comments',
												'favorited'		=>	'favorited',
												'rating'		=>	'rating',
												'k1'			=>	'key1',
												'k2'			=>	'key2',
												'un'			=>	'str');
												
							foreach($parse as $key=>$val)
							{
								$this->parsexml($key, $val);
							}

						$this->size = round($this->size/(1024*1024));
						
			}
			
			function get($what=false)
			{
				$all = array(	"URL"			=>	"http://www".$this->server.
													".megavideo.com/files/".
													$this->decrypt($this->str, $this->key1, $this->key2)."/",
								"SIZE"			=>	$this->size,
								"TITLE"			=>	$this->title,
								"DURATION"		=>	$this->duration,
								"SERVER"		=>	$this->server,
								"DESCRIPTION"	=>  $this->description,
								"ADDED"			=>  $this->added,
								"USERNAME"		=>  $this->username,
								"CATEGORY"		=>	$this->category,
								"VIEWS"			=>	$this->views,
								"COMMENTS"		=>	$this->comments,
								"FAVORITED"		=>	$this->favorited,
								"RATING"		=>  $this->rating
							);
							
				return $what&&array_key_exists(strtoupper($what),$all)?$all[strtoupper($what)]:$all;
			}
			
			function getxml()
			{
					$this->xml = file_get_contents("http://www.megavideo.com/xml/videolink.php?v=".$this->id."&id=".time()) or
									die("Error!\n");		
			}
			
			
			function parsexml($attribute, $name)
			{
					preg_match("#\s$attribute=\"(.+?)\"#", $this->xml, $tmp);
					list(,$this->$name) = $tmp;
			}
			
			function decrypt($str, $key1, $key2)
			{ 
				$reg1 = array();
				
					for($reg3=0; $reg3<strlen($str); $reg3++)
					{
						$reg0 = $str[$reg3];
							
							switch($reg0)
							{
								case '0': $reg1[] = '0000'; break;
								case '1': $reg1[] = '0001'; break;
								case '2': $reg1[] = '0010'; break;
								case '3': $reg1[] = '0011'; break;
								case '4': $reg1[] = '0100'; break;
								case '5': $reg1[] = '0101'; break;
								case '6': $reg1[] = '0110'; break;
								case '7': $reg1[] = '0111'; break;
								case '8': $reg1[] = '1000'; break;
								case '9': $reg1[] = '1001'; break;
								case 'a': $reg1[] = '1010'; break;
								case 'b': $reg1[] = '1011'; break;
								case 'c': $reg1[] = '1100'; break;
								case 'd': $reg1[] = '1101'; break;
								case 'e': $reg1[] = '1110'; break;
								case 'f': $reg1[] = '1111'; break;
							}
					}
					
					$reg1 = join($reg1);
					$reg6 = array();
					
					for($reg3=0; $reg3<384; $reg3++)
					{
						$key1 = ($key1 * 11 + 77213) % 81371;
						$key2 = ($key2 * 17 + 92717) % 192811;
						$reg6[] = ($key1 + $key2) % 128;
					}
					
					for($reg3=256; $reg3>=0; $reg3--)
					{
						$reg5 = $reg6[$reg3];
						$reg4 = $reg3 % 128;
						$reg8 = $reg1[$reg5];
						$reg1[$reg5] = $reg1[$reg4];
						$reg1[$reg4] = $reg8;
					}
					
					for($reg3=0; $reg3<128; $reg3++)
					{
						$reg1[$reg3] = $reg1[$reg3] ^ ($reg6[$reg3+256] & 1);	
					}
					
					$reg12 = $reg1;
					$reg7 = array();
					
					for($reg3=0; $reg3<strlen($reg12); $reg3+=4)
					{
						$reg9 = substr($reg12, $reg3, 4);
						$reg7[] = $reg9;
					}
					
					$reg2 = array();
					
					for($reg3=0; $reg3<count($reg7); $reg3++)
					{
						$reg0 = $reg7[$reg3];
						
							switch($reg0)
							{
								case '0000': $reg2[] = '0'; break;
								case '0001': $reg2[] = '1'; break;
								case '0010': $reg2[] = '2'; break;
								case '0011': $reg2[] = '3'; break;
								case '0100': $reg2[] = '4'; break;
								case '0101': $reg2[] = '5'; break;
								case '0110': $reg2[] = '6'; break;
								case '0111': $reg2[] = '7'; break;
								case '1000': $reg2[] = '8'; break;
								case '1001': $reg2[] = '9'; break;
								case '1010': $reg2[] = 'a'; break;
								case '1011': $reg2[] = 'b'; break;
								case '1100': $reg2[] = 'c'; break;
								case '1101': $reg2[] = 'd'; break;
								case '1110': $reg2[] = 'e'; break;
								case '1111': $reg2[] = 'f'; break;
							}
					}
				
				return join($reg2);
							
			}

}

?>