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Add files via upload
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bypass age verification if embedding possible
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@volkirik
volkirik authored Jun 22, 2018
1 parent 5304980 commit 2cd9a01
Showing 1 changed file with 53 additions and 47 deletions.
100 changes: 53 additions & 47 deletions src/YouTubeDownloader.php
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Original file line number Diff line number Diff line change
Expand Up @@ -6,15 +6,13 @@ function sig_js_decode($player_html){
// what javascript function is responsible for signature decryption?
// var l=f.sig||Xn(f.s)
// a.set("signature",Xn(c));return a
if(preg_match('/signature",([a-zA-Z0-9$]+)\(/', $player_html, $matches)){
if(preg_match('/signature",([a-zA-Z0-9]+)\(/', $player_html, $matches)){

$func_name = $matches[1];
$func_name = preg_quote($func_name);
$func_name = $matches[1];

// extract code block from that function
// single quote in case function name contains $dollar sign
// xm=function(a){a=a.split("");wm.zO(a,47);wm.vY(a,1);wm.z9(a,68);wm.zO(a,21);wm.z9(a,34);wm.zO(a,16);wm.z9(a,41);return a.join("")};
if(preg_match('/'.$func_name.'=function\([a-z]+\){(.*?)}/', $player_html, $matches)){
if(preg_match("/{$func_name}=function\([a-z]+\){(.*?)}/", $player_html, $matches)){

$js_code = $matches[1];

Expand Down Expand Up @@ -156,7 +154,7 @@ private function getInstructions($html){

// unserialize could fail on empty file
$str = file_get_contents($file_path);
return unserialize($str);
return unserialize($str);;

} else {

Expand All @@ -182,21 +180,25 @@ public function stream($id){
die("no url found!");
}

// grab first available MP4 link
$url = $links[0]['url'];

// request headers
$headers = array(
'User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0'
);
$ch = curl_init();

$headers = array();

if(isset($_SERVER['HTTP_RANGE'])){
$headers[] = 'Range: '.$_SERVER['HTTP_RANGE'];
}

$ch = curl_init();
$headers[] = 'User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0';

curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);


//curl_setopt($ch, CURLOPT_BUFFERSIZE, 4096);
curl_setopt($ch, CURLOPT_URL, $url);

//curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 0);

// we deal with this ourselves
Expand All @@ -216,7 +218,6 @@ public function stream($id){
if(preg_match('@HTTP\/\d\.\d\s(\d+)@', $data, $matches)){
$status_code = $matches[1];

// status=ok or partial content
if($status_code == 200 || $status_code == 206){
$headers_sent = true;
header(rtrim($data));
Expand All @@ -237,6 +238,7 @@ public function stream($id){
return strlen($data);
});


// if response is empty - this never gets called
curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($curl, $data) use (&$headers_sent){

Expand All @@ -249,7 +251,6 @@ public function stream($id){
});

$ret = @curl_exec($ch);
$error = curl_error($ch);
curl_close($ch);

// if we are still here by now, return status_code
Expand Down Expand Up @@ -305,51 +306,56 @@ public function getDownloadLinks($id, $selector = false){
$html = $this->curl("https://www.youtube.com/watch?v={$video_id}");
}

// age-gate
if(strpos($html, 'player-age-gate-content') !== false){
$gvi = $this->curl("https://www.youtube.com/get_video_info?el=embedded&eurl=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3D".urlencode($video_id)."&video_id={$video_id}");

// http://stackoverflow.com/questions/35608686/how-can-i-get-the-actual-video-url-of-a-youtube-live-stream
if(preg_match('@url_encoded_fmt_stream_map["\']:\s*["\']([^"\'\s]*)@', $html, $matches)){
$uefsm = $matches[1];
} elseif (preg_match('@url_encoded_fmt_stream_map=([^\&\s]+)@', $gvi, $matches_gvi)){
$uefsm = urldecode($matches_gvi[1]);
} elseif (strpos($html, 'player-age-gate-content') !== false) { // age-gate
// nothing you can do folks...
return false;
} else {
// youtube must have changed something
return false;
}

// http://stackoverflow.com/questions/35608686/how-can-i-get-the-actual-video-url-of-a-youtube-live-stream
if(preg_match('@url_encoded_fmt_stream_map["\']:\s*["\']([^"\'\s]*)@', $html, $matches)){

$parts = explode(",", $matches[1]);

$parts = explode(",", $uefsm);

foreach($parts as $p){
$query = str_replace('\u0026', '&', $p);
parse_str($query, $arr);
$url = $arr['url'];
foreach($parts as $p){
$query = str_replace('\u0026', '&', $p);
parse_str($query, $arr);

$url = $arr['url'];

if(isset($arr['sig'])){
$url = $url.'&signature='.$arr['sig'];
if(isset($arr['sig'])){
$url = $url.'&signature='.$arr['sig'];

} else if(isset($arr['signature'])){
$url = $url.'&signature='.$arr['signature'];
} else if(isset($arr['signature'])){
$url = $url.'&signature='.$arr['signature'];

} else if(isset($arr['s'])){

// this is probably a VEVO/ads video... signature must be decrypted first! We need instructions for doing that
if(count($instructions) == 0){
$instructions = (array)$this->getInstructions($html);
}
} else if(isset($arr['s'])){

$dec = $this->sig_decipher($arr['s'], $instructions);
$url = $url.'&signature='.$dec;
// this is probably a VEVO/ads video... signature must be decrypted first! We need instructions for doing that
if(count($instructions) == 0){
$instructions = (array)$this->getInstructions($html);
}

$dec = $this->sig_decipher($arr['s'], $instructions);
$url = $url.'&signature='.$dec;
}

// redirector.googlevideo.com
//$url = preg_replace('@(\/\/)[^\.]+(\.googlevideo\.com)@', '$1redirector$2', $url);
// redirector.googlevideo.com
//$url = preg_replace('@(\/\/)[^\.]+(\.googlevideo\.com)@', '$1redirector$2', $url);

$itag = $arr['itag'];
$format = isset($this->itag_info[$itag]) ? $this->itag_info[$itag] : 'Unknown';
$itag = $arr['itag'];
$format = isset($this->itag_info[$itag]) ? $this->itag_info[$itag] : 'Unknown';

$result[$itag] = array(
'url' => $url,
'format' => $format
);
}
$result[$itag] = array(
'url' => $url,
'format' => $format
);
}

// do we want all links or just select few?
Expand Down

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