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<?php
/* vim:set tabstop=8 softtabstop=8 shiftwidth=8 noexpandtab: */
/**
*
* LICENSE: GNU General Public License, version 2 (GPLv2)
* Copyright 2001 - 2013 Ampache.org
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License v2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
class scrobbler {
public $error_msg;
public $username;
public $password;
public $challenge;
public $submit_host;
public $submit_port;
public $submit_url;
public $queued_tracks;
public $reset_handshake = false;
public $scrobble_host = 'post.audioscrobbler.com';
/**
* Constructor
* This is the constructer it takes a username and password
*/
public function __construct($username, $password,$host='',$port='',$url='',$challenge='',$scrobble_host='') {
$this->error_msg = '';
$this->username = trim($username);
$this->password = trim($password);
$this->challenge = $challenge;
$this->submit_host = $host;
$this->submit_port = $port;
$this->submit_url = $url;
$this->queued_tracks = array();
if ($scrobble_host) { $this->scrobble_host = $scrobble_host; }
} // scrobbler
/**
* get_error_msg
*/
public function get_error_msg() {
return $this->error_msg;
} // get_error_msg
/**
* get_queue_count
*/
public function get_queue_count() {
return count($this->queued_tracks);
} // get_queue_count
/**
* handshake
* This does a handshake with the audioscrobber server it doesn't pass the password, but
* it does pass the username and has a 10 second timeout
*/
public function handshake() {
$as_socket = fsockopen($this->scrobble_host, 80, $errno, $errstr, 2);
if(!$as_socket) {
$this->error_msg = $errstr;
return false;
}
$username = rawurlencode($this->username);
$timestamp = time();
$auth_token = rawurlencode(md5($this->password . $timestamp));
$get_string = "GET /?hs=true&p=1.2&c=apa&v=0.1&u=$username&t=$timestamp&a=$auth_token HTTP/1.1\r\n";
fwrite($as_socket, $get_string);
fwrite($as_socket, "Host: $this->scrobble_host\r\n");
fwrite($as_socket, "Accept: */*\r\n\r\n");
$buffer = '';
while(!feof($as_socket)) {
$buffer .= fread($as_socket, 4096);
}
fclose($as_socket);
$split_response = preg_split("/\r\n\r\n/", $buffer);
if(!isset($split_response[1])) {
$this->error_msg = 'Did not receive a valid response';
return false;
}
$response = explode("\n", $split_response[1]);
// Handle the fact Libre.FM has extranious values at the start of it's handshake response
if(is_numeric(trim($response['0']))) {
array_shift($response);
debug_event('SCROBBLER','Junk in handshake, removing first line',1);
}
if(substr($response[0], 0, 6) == 'FAILED') {
$this->error_msg = substr($response[0], 7);
return false;
}
if(substr($response[0], 0, 7) == 'BADUSER') {
$this->error_msg = 'Invalid Username';
return false;
}
if(substr($response[0],0,7) == 'BADTIME') {
$this->error_msg = 'Your time is too far off from the server, or your PHP timezone is incorrect';
return false;
}
if(substr($response[0], 0, 6) == 'UPDATE') {
$this->error_msg = 'You need to update your client: '.substr($response[0], 7);
return false;
}
if(preg_match('/http:\/\/([^\/]+)\/(.*)$/', $response[3], $matches)) {
$host_parts = explode(":",$matches[1]);
$data['submit_host'] = $host_parts[0];
$data['submit_port'] = $host_parts[1] ? $host_parts[1] : '80';
$data['submit_url'] = '/' . $matches[2];
} else {
$this->error_msg = "Invalid POST URL returned, unable to continue. Sent:\n$get_string\n----\nReceived:\n" . $buffer .
"\n---------\nExpected:" . print_r($response, true);
return false;
}
// Remove any extra junk around the challenge
$data['challenge'] = trim($response[1]);
return $data;
} // handshake
/**
* queue_track
* This queues the LastFM track by storing it in this object, it doesn't actually
* submit the track or talk to LastFM in anyway, kind of useless for our uses but its
* here, and that's how it is.
*/
public function queue_track($artist, $album, $title, $timestamp, $length,$track) {
if ($length < 30) {
debug_event('Scrobbler',"Not queuing track, too short",'5');
return false;
}
$newtrack = array();
$newtrack['artist'] = $artist;
$newtrack['album'] = $album;
$newtrack['title'] = $title;
$newtrack['track'] = $track;
$newtrack['length'] = $length;
$newtrack['time'] = $timestamp;
$this->queued_tracks[$timestamp] = $newtrack;
return true;
} // queue_track
/**
* submit_tracks
* This actually talks to LastFM submiting the tracks that are queued up. It
* passed the md5'd password combinted with the challenge, which is then md5'd
*/
public function submit_tracks() {
// Check and make sure that we've got some queued tracks
if(!count($this->queued_tracks)) {
$this->error_msg = "No tracks to submit";
return false;
}
//sort array by timestamp
ksort($this->queued_tracks);
// build the query string
$query_str = 's='.rawurlencode($this->challenge).'&';
$i = 0;
foreach($this->queued_tracks as $track) {
$query_str .= "a[$i]=".rawurlencode($track['artist'])."&t[$i]=".rawurlencode($track['title'])."&b[$i]=".rawurlencode($track['album'])."&";
$query_str .= "m[$i]=&l[$i]=".rawurlencode($track['length'])."&i[$i]=".rawurlencode($track['time'])."&";
$query_str .= "n[$i]=" . rawurlencode($track['track']) . "&o[$i]=P&r[$i]=&";
$i++;
}
if (!trim($this->submit_host) || !$this->submit_port) {
$this->reset_handshake = true;
return false;
}
$as_socket = fsockopen($this->submit_host, intval($this->submit_port), $errno, $errstr, 2);
if(!$as_socket) {
$this->error_msg = $errstr;
$this->reset_handshake = true;
return false;
}
$action = "POST ".$this->submit_url." HTTP/1.0\r\n";
fwrite($as_socket, $action);
fwrite($as_socket, "Host: ".$this->submit_host."\r\n");
fwrite($as_socket, "Accept: */*\r\n");
fwrite($as_socket, "User-Agent: Ampache/3.6\r\n");
fwrite($as_socket, "Content-type: application/x-www-form-urlencoded\r\n");
fwrite($as_socket, "Content-length: ".strlen($query_str)."\r\n\r\n");
fwrite($as_socket, $query_str."\r\n\r\n");
// Allow us to debug this
debug_event('SCROBBLER','Query String:' . $query_str,6);
$buffer = '';
while(!feof($as_socket)) {
$buffer .= fread($as_socket, 8192);
}
fclose($as_socket);
$split_response = preg_split("/\r\n\r\n/", $buffer);
if(!isset($split_response[1])) {
$this->error_msg = 'Did not receive a valid response';
$this->reset_handshake = true;
return false;
}
$response = explode("\n", $split_response[1]);
if(!isset($response[0])) {
$this->error_msg = 'Unknown error submitting tracks'.
"\nDebug output:\n".$buffer;
$this->reset_handshake = true;
return false;
}
if(substr($response[0], 0, 6) == 'FAILED') {
$this->error_msg = $response[0];
$this->reset_handshake = true;
return false;
}
if(substr($response[0], 0, 7) == 'BADAUTH') {
$this->error_msg = 'Invalid username/password (' . trim($response[0]) . ')';
return false;
}
if (substr($response[0],0,10) == 'BADSESSION') {
$this->error_msg = 'Invalid Session passed (' . trim($response[0]) . ')';
$this->reset_handshake = true;
return false;
}
if(substr($response[0], 0, 2) != 'OK') {
$this->error_msg = 'Response Not ok, unknown error'.
"\nDebug output:\n".$buffer;
$this->reset_handshake = true;
return false;
}
return true;
} // submit_tracks
} // end audioscrobbler class
?>
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