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<?php
	/* 
		Audioscrobbler Realtime Submission Protocol v1.2.1
		Written by: Navarr T. Barnier
		Version: 0.1
		NOT FOR WEB SERVICES ACCOUNTS (maybe a later version)

Time Log
	-----------------------------------------------------------
	Date		Start	End	Duration	Description
	-----------------------------------------------------------
	11/07/2008	10:42	11:19	37 mn		A Good Bit of Work, lol.
	11/07/2008	11:25	11:59	34 mn		The rest of the preliminary Work - next is debugging
	11/07/2008	12:00	12:22	22 mn		Testing and Tweaks
	-----------------------------	93 mn		Wow, 1.5 hr of work!
	*/

class Scrobbler
	{

public		$protocol	="http://";
	protected	$server 	= "post.audioscrobbler.com";
	protected 	$dir		= "/";
	protected 	$port		= 80;
	protected 	$user		= "";
	protected 	$pass		= "";
	public 		$clientID 	= "tst";
	public 		$clientVersion 	= "1.0";
	public		$debug		= "";
	protected 	$scrobblerVersion="1.2.1";
	protected	$session	= null;
	protected	$nowPlayingUri	= null;
	protected	$submissionUri	= null;

public function __construct($server = null,$port = null,$protocol = null)
		{
		$this->setInfo($server,$port,null,null,null,null,null,$protocol);
		$this->debug = array();
		}

public function setInfo($server = null,$port = null,$user = null,$pass = null,$clientID = null,$clientVersion = null,$dir = null,$protocol = null)
		{
		if ($server != null)
			{ $this->server = $server; }
		if ($port != null)
			{ $this->port = $port; }
		if ($user != null)
			{ $this->user = $user; }
		if ($pass != null)
			{ $this->pass = $pass; }
		if ($clientID != null)
			{ $this->clientID = $clientID; }
		if ($clientVersion != null)
			{ $this->clientVersion = $clientVersion; }
		if ($dir != null)
			{ $this->dir = $dir; }
		if ($protocol != null)
			{ $this->protocol = $protocol; }
		return true;
		}

public function setUserInfo($user = null,$pass = null)
		{
		return $this->setInfo(null,null,$user,$pass);
		}

public function setClientInfo($id = null,$ver = null)
		{
		return $this->setInfo(null,null,null,null,$id,$ver);
		}

public function handshake()
		{
		$time = time();
		$vars = array();
		$vars["hs"] = "true";
		$vars["c"] = $this->clientID;
		$vars["v"] = $this->clientVersion;
		$vars["p"] = $this->scrobblerVersion;
		$vars["u"] = $this->user;
		$vars["t"] = $time;
		$vars["a"] = md5(md5($this->pass).$time);
		$response = $this->callMethod($vars,null,0,true);

if ($response === false)
			{ return false; }
		
		$this->session = $response[1];
		$this->nowPlayingUri = $response[2];
		$this->submissionUri = $response[3];
		
		return true;

}

public function nowPlaying($artist,$track,$album = "",$length = "",$trackNumber = "",$trackID = "")
		{ /* $trackID = MusicBrainz Track ID */
		$vars = array();
		$vars["s"] = $this->session;
		$vars["a"] = $artist;
		$vars["t"] = $track;
		$vars["b"] = $album;
		$vars["l"] = $length;
		$vars["n"] = $trackNumber;
		$vars["m"] = $trackID;
		if ($this->callMethod($vars,$this->nowPlayingUri,null,false,true))
			{ return true; }
		else
			{ return false; }
		}

public function submission($artist,$track,$time,$source,$length = "",$rating = "",$album = "",$trackNumber = "",$trackID = "")
		{ /* $trackID = MusicBrainz Track ID */
		$source = strtoupper($source);
		if ($source == "P" && $length == "")
			{ trigger_error("Length must be specified if source is from user");return false; }
		if ($source != "P" && $source != "R" && $source != "E" && substr($source,0,1) != "L")
			{ $source = "U"; }
		$vars = array();
		$vars["s"] = $this->session;
		$vars["a[0]"] = $artist;
		$vars["t[0]"] = $track;
		$vars["i[0]"] = $time;
		$vars["o[0]"] = $source;
		$vars["r[0]"] = $rating;
		$vars["l[0]"] = $length;
		$vars["b[0]"] = $album;
		$vars["n[0]"] = $trackNumber;
		$vars["m[0]"] = $trackID;
		if ($this->callMethod($vars,$this->submissionUri,null,false,true))
			{ return true; }
		else
			{ return false; }
		}

protected function callMethod($vars,$method = null,$errorRun = null,$handshake = false,$uri = false)
		{

if ($errorRun == null) { $errorRun = 0; }

if ($errorRun == 1 && $handshake)
			{ return false; }

if ($errorRun == 3)
			{
				if (!$this->handshake())
					{
					return false;
					}
				else
					{
					return $this->callMethod($vars,$method,$errorRun,$handshake,$uri);
					}
			}

$errorRun++;

if (!is_array($vars)) 
			{ return false; }

if ($method == null) 
			{ $method = ""; }

if (!$uri)
			{ $url = $this->protocol.$this->server.":".$this->port.$this->dir.$method; }
		else
			{ $url = $method; }

$i = false;

foreach($vars as $k => $v)
			{
			if ($i == false) { $start = "?";$i = true; } else { $start = "&"; }
			$url .= $start.$k."=".urlencode($v);
			}

$this->debug["lastURI"] = $url;

//	if ($this->prefMethod != "curl")
	//		{
	//		if (!$response = file_get_contents($url)) 
	//			{ $response = false; }
	//		}
	//
	//	if ($this->prefMethod == "curl" || $response === false)
	//		{
			$ch = curl_init();
			curl_setopt($ch,CURLOPT_URL,$url);
			curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
			curl_setopt($ch,CURLOPT_FRESH_CONNECT,1);
			curl_setopt($ch,CURLOPT_FOLLOWLOCATION,1);
			curl_setopt($ch,CURLOPT_FORBID_REUSE,1);
			curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,0);
			if ($uri)
				{
				curl_setopt($ch,CURLOPT_POST,true);
				}
			$response = curl_exec($ch);
	//		}

$response = explode("\n",$response);
		$response[0] = strtoupper($response[0]);

if ($response[0] == "OK")
			{ return $response; }
		else
			{
			if (substr($response[0],0,6) == "FAILED" || $response[0] == "BADSESSION")
				{
				if (!$return = $this->callMethod($vars,$method,$errorRun,$handshake,$uri))
					{ return false; }
				else
					{ return $return; }
				}

$this->debug["error"] = true;
			$this->debug["errorMsg"] = $response[0];
			return false;
			}
		}
	}
?>

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