radio/metadata.php at master · haritzmedina/radio · GitHub

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<?php

function get_string_between($string, $start, $end){
    $string = ' ' . $string;
    $ini = strpos($string, $start);
    if ($ini == 0) return '';
    $ini += strlen($start);
    $len = strpos($string, $end, $ini) - $ini;
    return substr($string, $ini, $len);
}

function get_web_content($requestedStation){
    // create curl resource
    $ch = curl_init();

    $header = array();
    $header[] = 'Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5';
    $header[] = 'Cache-Control: max-age=0';
    $header[] = 'Connection: keep-alive';
    $header[] = 'Keep-Alive: 300';
    $header[] = 'Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7';
    $header[] = 'Accept-Language: en-us,en;q=0.5';
    $header[] = 'Pragma: ';

    // set url
    curl_setopt($ch, CURLOPT_URL, $requestedStation->metadata);

    // set user agent
    curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.0.11) Gecko/2009060215 Firefox/3.0.11 (.NET CLR 3.5.30729)');
    curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
    curl_setopt($ch, CURLOPT_AUTOREFERER, true);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_ENCODING, '');
    curl_setopt($ch, CURLOPT_TIMEOUT, 20);

    // $output contains the output string
    $resultPageString = curl_exec($ch);

    // close curl resource to free up system resources
    curl_close($ch);

    return get_string_between($resultPageString, '<body>', '</body>');
}

$stations = json_decode(file_get_contents('./stations.json'));

$requestedStationName = htmlspecialchars($_GET["name"]);
//$requestedStationName = htmlspecialchars('NERadio.fm');

$requestedStation = new stdClass();

foreach($stations as $station){
    if($station->name==$requestedStationName){
        $requestedStation = $station;
    }
}

$response = new stdClass();
$response->station = $requestedStation;

$response->metadata = new stdClass();


if($requestedStation->type==='shoutcast'){
    $bodyContent = get_web_content($requestedStation);

    $pos = strrpos($bodyContent, ',');
    $id = $pos === false ? $bodyContent : substr($bodyContent, $pos + 1);

    $response->metadata->title = trim($id);
}
elseif($requestedStation->type==='icecast2'){
    $bodyContent = get_web_content($requestedStation);

    $id = get_string_between($bodyContent, '<td>Current Song:</td><td class="streamdata">', '</td></tr>');

    $response->metadata->title = trim($id);
}

// Response the user
echo(json_encode($response));