442 lines
13 KiB
PHP
442 lines
13 KiB
PHP
<?php
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use Airtime\CcWebstream;
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use Airtime\CcWebstreamQuery;
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use Airtime\CcSubjsQuery;
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class Application_Model_Webstream implements Application_Model_LibraryEditable
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{
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private $id;
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public function __construct($webstream)
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{
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//TODO: hacky...
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if (is_int($webstream)) {
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$this->webstream = CcWebstreamQuery::create()->findPK($webstream);
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if (is_null($this->webstream)) {
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throw new Exception();
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}
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} else {
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$this->webstream = $webstream;
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}
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}
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public function getOrm()
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{
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return $this->webstream;
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}
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public function getName()
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{
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return $this->webstream->getDbName();
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}
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public function getId()
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{
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return $this->webstream->getDbId();
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}
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public function getCreatorId()
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{
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return $this->webstream->getDbCreatorId();
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}
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public function getLastModified($p_type)
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{
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return $this->webstream->getDbMtime();
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}
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public function getDefaultLength()
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{
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$dateString = $this->webstream->getDbLength();
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$arr = explode(":", $dateString);
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if (count($arr) == 3) {
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list($hours, $min, $sec) = $arr;
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$di = new DateInterval("PT{$hours}H{$min}M{$sec}S");
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return $di->format("%Hh %Im");
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}
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return "";
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}
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public function getLength()
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{
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return $this->getDefaultLength();
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}
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public function getDescription()
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{
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return $this->webstream->getDbDescription();
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}
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public function getUrl()
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{
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return $this->webstream->getDbUrl();
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}
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public function getMetadata()
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{
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$subjs = CcSubjsQuery::create()->findPK($this->webstream->getDbCreatorId());
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$username = $subjs->getDbLogin();
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return array(
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"name" => $this->webstream->getDbName(),
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"length" => $this->webstream->getDbLength(),
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"description" => $this->webstream->getDbDescription(),
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"login" => $username,
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"url" => $this->webstream->getDbUrl(),
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);
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}
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public static function deleteStreams($p_ids, $p_userId)
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{
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$leftOver = self::streamsNotOwnedByUser($p_ids, $p_userId);
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if (count($leftOver) == 0) {
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CcWebstreamQuery::create()->findPKs($p_ids)->delete();
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} else {
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throw new WebstreamNoPermissionException;
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}
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}
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// This function returns that are not owen by $p_user_id among $p_ids
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private static function streamsNotOwnedByUser($p_ids, $p_userId)
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{
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$ownedByUser = CcWebstreamQuery::create()->filterByDbCreatorId($p_userId)->find()->getData();
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$ownedStreams = array();
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foreach ($ownedByUser as $pl) {
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if (in_array($pl->getDbId(), $p_ids)) {
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$ownedStreams[] = $pl->getDbId();
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}
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}
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$leftOvers = array_diff($p_ids, $ownedStreams);
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return $leftOvers;
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}
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public static function analyzeFormData($parameters)
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{
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$valid = array("length" => array(true, ''),
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"url" => array(true, ''),
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"name" => array(true, ''));
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$di = null;
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$length = $parameters["length"];
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$result = preg_match("/^(?:([0-9]{1,2})h)?\s*(?:([0-9]{1,2})m)?$/", $length, $matches);
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$invalid_date_interval = false;
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if ($result == 1 && count($matches) == 2) {
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$hours = $matches[1];
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$minutes = 0;
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} elseif ($result == 1 && count($matches) == 3) {
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$hours = $matches[1];
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$minutes = $matches[2];
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} else {
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$invalid_date_interval = true;
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}
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if (!$invalid_date_interval) {
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//Due to the way our Regular Expression is set up, we could have $minutes or $hours
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//not set. Do simple test here
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if (!is_numeric($hours)) {
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$hours = 0;
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}
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if (!is_numeric($minutes)) {
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$minutes = 0;
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}
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//minutes cannot be over 59. Need to convert anything > 59 minutes into hours.
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$hours += intval($minutes/60);
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$minutes = $minutes%60;
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$di = new DateInterval("PT{$hours}H{$minutes}M");
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$totalMinutes = $di->h * 60 + $di->i;
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if ($totalMinutes == 0) {
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$valid['length'][0] = false;
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$valid['length'][1] = _('Length needs to be greater than 0 minutes');
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}
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} else {
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$valid['length'][0] = false;
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$valid['length'][1] = _('Length should be of form "00h 00m"');
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}
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$url = $parameters["url"];
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//simple validator that checks to make sure that the url starts with
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//http(s),
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//and that the domain is at least 1 letter long
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$result = preg_match("/^(http|https):\/\/.+/", $url, $matches);
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$mime = null;
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$mediaUrl = null;
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if ($result == 0) {
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$valid['url'][0] = false;
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$valid['url'][1] = _('URL should be of form "http://domain"');
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} elseif (strlen($url) > 512) {
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$valid['url'][0] = false;
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$valid['url'][1] = _('URL should be 512 characters or less');
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} else {
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try {
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list($mime, $content_length_found) = self::discoverStreamMime($url);
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if (is_null($mime)) {
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throw new Exception(_("No MIME type found for webstream."));
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}
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$mediaUrl = self::getMediaUrl($url, $mime, $content_length_found);
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if (preg_match("/(x-mpegurl)|(xspf\+xml)|(pls\+xml)|(x-scpls)/", $mime)) {
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list($mime, $content_length_found) = self::discoverStreamMime($mediaUrl);
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}
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} catch (Exception $e) {
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$valid['url'][0] = false;
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$valid['url'][1] = $e->getMessage();
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}
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}
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$name = $parameters["name"];
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if (strlen($name) == 0) {
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$valid['name'][0] = false;
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$valid['name'][1] = _('Webstream name cannot be empty');
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}
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$id = $parameters["id"];
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return array($valid, $mime, $mediaUrl, $di);
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}
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public static function isValid($analysis)
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{
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foreach ($analysis as $k => $v) {
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if ($v[0] === false) {
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return false;
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}
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}
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return true;
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}
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// TODO : Fix this interface
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//This function should not be defined in the interface.
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public function setMetadata($key, $val)
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{
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throw new Exception("Not implemented.");
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}
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public function setName($name)
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{
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$this->webstream->setDbName($name);
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}
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public function setLastPlayed($timestamp)
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{
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$this->webstream->setDbLPtime($timestamp);
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$this->webstream->save();
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}
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private static function getUrlData($url)
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{
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$ch = curl_init();
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curl_setopt($ch, CURLOPT_URL, $url);
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curl_setopt($ch, CURLOPT_HEADER, 0);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
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// grab URL and pass it to the browser
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//TODO: What if invalid url?
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$content = curl_exec($ch);
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// close cURL resource, and free up system resources
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curl_close($ch);
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return $content;
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}
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private static function getXspfUrl($url)
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{
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$content = self::getUrlData($url);
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$dom = new DOMDocument;
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//TODO: What if invalid xml?
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$dom->loadXML($content);
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$tracks = $dom->getElementsByTagName('track');
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foreach ($tracks as $track) {
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$locations = $track->getElementsByTagName('location');
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foreach ($locations as $loc) {
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return $loc->nodeValue;
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}
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}
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throw new Exception(_("Could not parse XSPF playlist"));
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}
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private static function getPlsUrl($url)
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{
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$content = self::getUrlData($url);
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$ini = parse_ini_string($content, true);
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if ($ini !== false && isset($ini["playlist"]) && isset($ini["playlist"]["File1"])) {
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return $ini["playlist"]["File1"];
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}
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throw new Exception(_("Could not parse PLS playlist"));
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}
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private static function getM3uUrl($url)
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{
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$content = self::getUrlData($url);
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//split into lines:
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$delim = "\n";
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if (strpos($content, "\r\n") !== false) {
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$delim = "\r\n";
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}
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$lines = explode("$delim", $content);
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#$lines = preg_split('/$\R?^/m', $content);
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if (count($lines) > 0) {
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return $lines[0];
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}
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throw new Exception(_("Could not parse M3U playlist"));
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}
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private static function getMediaUrl($url, $mime, $content_length_found)
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{
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if (preg_match("/x-mpegurl/", $mime)) {
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$media_url = self::getM3uUrl($url);
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} elseif (preg_match("/xspf\+xml/", $mime)) {
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$media_url = self::getXspfUrl($url);
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} elseif (preg_match("/pls\+xml/", $mime) || preg_match("/x-scpls/", $mime)) {
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$media_url = self::getPlsUrl($url);
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} elseif (preg_match("/(mpeg|ogg|audio\/aacp)/", $mime)) {
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if ($content_length_found) {
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throw new Exception(_("Invalid webstream - This appears to be a file download."));
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}
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$media_url = $url;
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} else {
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throw new Exception(sprintf(_("Unrecognized stream type: %s"), $mime));
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}
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return $media_url;
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}
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/* PHP get_headers has an annoying property where if the passed in URL is
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* a redirect, then it goes to the new URL, and returns headers from both
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* requests. We only want the headers from the final request. Here's an
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* example:
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*
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* 0 => "HTTP/1.1 302 Moved Temporarily",
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* 1 => "X-Powered-By: Servlet/3.0 JSP/2.2 (GlassFish Server Open Source Edition 3.1.1 Java/Sun Microsystems Inc./1.6)",
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* 2 => "Server: GlassFish Server Open Source Edition 3.1.1",
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* 3 => "Location: http://3043.live.streamtheworld.com:80/SAM04AAC89_SC",
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* 4 => "Content-Type: text/html;charset=ISO-8859-1",
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* 5 => "Content-Language: en-US",
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* 6 => "Content-Length: 202",
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* 7 => "Date: Thu, 27 Dec 2012 21:52:59 GMT",
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* 8 => "Connection: close",
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* 9 => "HTTP/1.0 200 OK",
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* 10 => "Expires: Thu, 01 Dec 2003 16:00:00 GMT",
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* 11 => "Cache-Control: no-cache, must-revalidate",
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* 12 => "Pragma: no-cache",
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* 13 => "Content-Type: audio/aacp",
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* 14 => "icy-br: 68",
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* 15 => "Server: MediaGateway 3.2.1-04",
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* */
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private static function cleanHeaders($headers) {
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//find the position of HTTP/1 200 OK
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//
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$position = 0;
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foreach ($headers as $i => $v) {
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if (preg_match("/^HTTP.*200 OK$/i", $v)) {
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$position = $i;
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break;
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}
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}
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return array_slice($headers, $position);
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}
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private static function discoverStreamMime($url)
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{
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try {
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$headers = @get_headers($url);
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$mime = null;
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$content_length_found = false;
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if ($headers !== false) {
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$headers = self::cleanHeaders($headers);
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foreach ($headers as $h) {
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if (preg_match("/^content-type:/i", $h)) {
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list(, $value) = explode(":", $h, 2);
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$mime = trim($value);
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}
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if (preg_match("/^content-length:/i", $h)) {
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$content_length_found = true;
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}
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}
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}
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} catch (Exception $e) {
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Logging::info("Invalid stream URL");
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Logging::info($e->getMessage());
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}
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return array($mime, $content_length_found);
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}
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public static function save($parameters, $mime, $mediaUrl, $di)
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{
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$userInfo = Zend_Auth::getInstance()->getStorage()->read();
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$id = $parameters['id'];
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if ($id != -1) {
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$webstream = CcWebstreamQuery::create()->findPK($id);
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} else {
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$webstream = new CcWebstream();
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}
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$webstream->setDbName($parameters["name"]);
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$webstream->setDbDescription($parameters["description"]);
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$webstream->setDbUrl($mediaUrl);
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$dblength = $di->format("%H:%I");
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$webstream->setDbLength($dblength);
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$webstream->setDbCreatorId($userInfo->id);
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$webstream->setDbUtime(new DateTime("now", new DateTimeZone('UTC')));
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$webstream->setDbMtime(new DateTime("now", new DateTimeZone('UTC')));
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$ws = new Application_Model_Webstream($webstream);
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$webstream->setDbMime($mime);
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$webstream->save();
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return $webstream->getDbId();
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}
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/*
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* method is not used, webstreams aren't currently kept track of for isScheduled.
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*/
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public static function setIsScheduled($p_webstreamId, $p_status) {
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$webstream = CcWebstreamQuery::create()->findPK($p_webstreamId);
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$updateIsScheduled = false;
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if (isset($webstream) && !in_array($p_webstreamId,
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Application_Model_Schedule::getAllFutureScheduledWebstreams())) {
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//$webstream->setDbIsScheduled($p_status)->save();
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$updateIsScheduled = true;
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}
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return $updateIsScheduled;
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}
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}
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class WebstreamNoPermissionException extends Exception {}
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