Youtube Download Plugins

<?php

if (!defined('RAPIDLEECH')) {
	require_once ('index.html');
	exit();
}

class youtube_com extends DownloadClass {
	private $page, $cookie, $fmts, $fmturlmaps;
	public function Download($link) {
		$this->cookie = isset($_REQUEST['yt_QS']) && !empty($_POST['cookie']) ? StrToCookies(decrypt(urldecode($_POST['cookie']))) : array();
		$this->page = $this->GetPage($link, $this->cookie);
		if (preg_match('@Location: ((https?://(?:[^/\r\n]+\.)?youtube\.com)?/watch\?[^\r\n]+)@i', $this->page, $redir)) {
			$link = (empty($redir[2])) ? 'http://www.youtube.com'.$redir[1] : $redir[1];
			$this->page = $this->GetPage($link, $this->cookie);
		}

		if (preg_match('@^HTTP/1\.[01] 403 Forbidden@i', $this->page)) {
			$this->CheckErrors();
			html_error('403 Forbidden');
		} else if (preg_match('@^HTTP/1\.[01] 404 Not Found@i', $this->page)) {
			$this->CheckErrors();
			html_error('404 Page Not Found');
		} else $this->CheckErrors();

		if (isset($_REQUEST['step']) || preg_match('@Location: https?://(www\.)?youtube\.com/das_captcha@i', $this->page)) {
			$this->captcha($link);
		}
		$Mesg = lang(300);
		if (preg_match('#Location: https?://(www\.)?youtube\.com/verify_age#i', $this->page)) {
			$Mesg .= '<br /><br />Verify_age page found:<br />This video may contain content that is inappropriate for some users<br /><br />Logging in to Youtube...<br />Direct Link option may not work.';
			$this->changeMesg($Mesg);
			$this->verify_age($link);
		}
		if (preg_match('#Location: https?://(www\.)?youtube\.com/verify_controversy#i', $this->page)) {
			$Mesg .= '<br /><br />Verify_controversy page found:<br />The following content has been identified by the YouTube community as being potentially offensive or inappropriate. Viewer discretion is advised.';
			$this->changeMesg($Mesg);
			$this->verify_controversy($link);
		}

		if (!preg_match('#fmt_stream_map=(.+?)(&|(\\\u0026))#', $this->page, $fmt_url_map)) html_error('Video link not found.');
		$fmt_url_maps = explode(',', urldecode($fmt_url_map[1]));

		$this->fmts = array(38,37,22,45,35,44,34,43,18,5,17);
		$yt_fmt = empty($_REQUEST['yt_fmt']) ? '' : $_REQUEST['yt_fmt'];
		$this->fmturlmaps = $this->GetVideosArr($fmt_url_maps);

		if (empty($yt_fmt) && !isset($_GET["audl"])) return $this->QSelector($link);
		elseif (isset($_REQUEST['ytube_mp4']) && $_REQUEST['ytube_mp4'] == 'on' && !empty($yt_fmt)) {
			//look for and download the highest quality we can find?
			if ($yt_fmt == 'highest') {
				foreach ($this->fmts as $fmt) {
					if (array_key_exists($fmt, $this->fmturlmaps)) {
						$furl = $this->fmturlmaps[$fmt];
						break;
					}
				}
			} else { //get the format the user specified (making sure it actually exists)
				if (!$furl = $this->fmturlmaps[$yt_fmt]) html_error ('Specified video format not found');
				$fmt = $yt_fmt;
			}
		} else { //just get the one Youtube plays by default (in some cases it could also be the highest quality format)
			$fmt = key($this->fmturlmaps);
			$furl = $this->fmturlmaps[$fmt];
		}

		$ext = '.flv';
		$fmtexts = array('.3gp' => array(17), '.mp4' => array(18,22,37,38), '.webm' => array(43,44,45));
		foreach ($fmtexts as $k => $v) {
			if (!is_array($v)) $v = array($v);
			if (in_array($fmt, $v)) {
				$ext = $k;
				break;
			}
		}

		$_s = '[\r\n\t\s]';
		if (!preg_match("#<title>$_s*(.*)$_s+-$_s+YouTube$_s*</title>#Us", $this->page, $title) && !preg_match("#<title>$_s*YouTube\s+-\s+(.*)$_s*</title>#Us", $this->page, $title)) html_error('No video title found! Download halted.');
		if (!preg_match('/video_id=(.+?)(\\\|"|&|(\\\u0026))/', $this->page, $video_id)) html_error('Video id not found.');
		$FileName = str_replace(str_split('\\/:*?"<>|'), '_', html_entity_decode(trim($title[1]), ENT_QUOTES)) . "-[YT-$fmt][{$video_id[1]}]$ext";

		if (isset($_REQUEST['ytdirect']) && $_REQUEST['ytdirect'] == 'on') {
			echo "<br /><br /><h4><a style='color:yellow' href='" . urldecode($furl) . "'>Click here or copy the link to your download manager to download</a></h4>";
			echo "<input name='dlurl' style='width: 1000px; border: 1px solid #55AAFF; background-color: #FFFFFF; padding:3px' value='" . urldecode($furl) . "' onclick='javascript:this.select();' readonly></input>";
		} else {
			$this->RedirectDownload ($furl, $FileName, $this->cookie, 0, 0, $FileName);
		}
	}

	private function captcha($link) {
		$url = 'http://www.youtube.com/das_captcha?next=' . urlencode($link);
		if (isset($_REQUEST['step']) && $_REQUEST['step'] == '1') {
			if (empty($_POST['recaptcha_response_field'])) html_error('You didn\'t enter the image verification code.');
			$post = array('recaptcha_challenge_field' => $_POST['recaptcha_challenge_field'], 'recaptcha_response_field' => $_POST['recaptcha_response_field']);
			$post['next'] = $_POST['next'];
			$post['action_recaptcha_verify'] = $_POST['action_recaptcha_verify'];
			$post['submit'] = $_POST['_submit'];
			$post['session_token'] = $_POST['session_token'];
			$cookie = urldecode($_POST['cookie']);

			$page = $this->GetPage($url, $cookie, $post, $url);
			is_present($page, 'The verification code was invalid', 'The verification code was invalid or has timed out, please try again.');
			is_present($page, "\r\n\r\nAuthorization Error.", 'Error sending captcha.');
			is_notpresent($page, 'Set-Cookie: goojf=', 'Cannot get captcha cookie.');

			$this->cookie = GetCookiesArr($page);
			$this->page = $this->GetPage($link, $this->cookie);
		} else {
			$page = $this->GetPage($url);
			if (!preg_match('@//(?:[^/]+\.)?(?:(?:google\.com/recaptcha/api)|(?:recaptcha\.net))/(?:(?:challenge)|(?:noscript))\?k=([\w|\-]+)@i', $page, $pid)) html_error('Error: reCAPTCHA not found.');

			$data = $this->DefaultParamArr($link, GetCookies($page));
			$data['next'] = urlencode(html_entity_decode(cut_str($page, 'name="next" value="', '"')));
			$data['action_recaptcha_verify'] = urlencode(cut_str($page, 'name="action_recaptcha_verify" value="', '"'));
			$data['_submit'] = urlencode(cut_str($page, 'type="submit" name="submit" value="', '"'));
			$data['session_token'] = urlencode(cut_str($page, "'XSRF_TOKEN': '", "'"));
			if (isset($_REQUEST['ytube_mp4'])) $data['ytube_mp4'] = $_REQUEST['ytube_mp4'];
			if (isset($_REQUEST['ytdirect'])) $data['ytdirect'] = $_REQUEST['ytdirect'];
			if (isset($_REQUEST['yt_fmt'])) $data['yt_fmt'] = $_REQUEST['yt_fmt'];
			$data['step'] = 1;

			$this->Show_reCaptcha($pid[1], $data);
		}
	}

	private function Show_reCaptcha($pid, $inputs) {
		global $PHP_SELF;
		if (!is_array($inputs)) html_error('Error parsing captcha data.');

		// Themes: 'red', 'white', 'blackglass', 'clean'
		echo "<script language='JavaScript'>var RecaptchaOptions={theme:'red', lang:'en'};</script>\n";

		echo "\n<center><form name='dl' action='$PHP_SELF' method='post'><br />\n";
		foreach ($inputs as $name => $input) echo "<input type='hidden' name='$name' id='$name' value='$input' />\n";
		echo "<script type='text/javascript' src='http://www.google.com/recaptcha/api/challenge?k=$pid'></script>";
		echo "<noscript><iframe src='http://www.google.com/recaptcha/api/noscript?k=$pid' height='300' width='500' frameborder='0'></iframe><br />";
		echo "<textarea name='recaptcha_challenge_field' rows='3' cols='40'></textarea><input type='hidden' name='recaptcha_response_field' value='manual_challenge' /></noscript><br />";
		echo "<input type='submit' name='submit' onclick='javascript:return checkc();' value='Download File' />\n";
		echo "<script type='text/javascript'>/*<![CDATA[*/\nfunction checkc(){\nvar capt=document.getElementById('recaptcha_response_field');\nif (capt.value == '') { window.alert('You didn\'t enter the image verification code.'); return false; }\nelse { return true; }\n}\n/*]]>*/</script>\n";
		echo "</form></center>\n</body>\n</html>";
		exit;
	}

	private function login($link) {
		global $premium_acc;
		if (!empty($this->cookie['SID'])) return;

		if (!empty($_REQUEST['premium_user']) && !empty($_REQUEST['premium_pass'])) {
			$user = $_REQUEST['premium_user'];
			$pass = $_REQUEST['premium_pass'];
		} else {
			$user = $premium_acc['youtube_com']['user'];
			$pass = $premium_acc['youtube_com']['pass'];
		}
		if (empty($user) || empty($pass)) html_error('Login Failed: Login Empty.', 0);

		$post = array();
		$post['Email'] = urlencode($user);
		$post['Passwd'] = urlencode($pass);
		$post['service'] = 'youtube';

		$page = $this->GetPage('https://www.google.com/accounts/ClientLogin', 0, $post, 'https://www.google.com/accounts/ClientLogin');
		is_present($page, 'Error=BadAuthentication', 'Login Failed: The login/password entered are incorrect.');
		is_present($page, 'Error=NotVerified', 'Login Failed: The account has not been verified.');
		is_present($page, 'Error=TermsNotAgreed', 'Login Failed: The account has not agreed to terms.');
		is_present($page, 'Error=CaptchaRequired', 'Login Failed: Need CAPTCHA. (Not supported yet)... Or check you login and try again.');
		is_present($page, 'Error=Unknown', 'Login Failed.');
		is_present($page, 'Error=AccountDeleted', 'Login Failed: The user account has been deleted.');
		is_present($page, 'Error=AccountDisabled', 'Login Failed: The user account has been disabled.');
		is_present($page, 'Error=ServiceDisabled', 'Login Failed: The user\'s access to the specified service has been disabled.');
		is_present($page, 'Error=ServiceUnavailable', 'Login Failed: Service is not available; try again later.');

		if (!preg_match('@SID=([^\r|\n]+)@i', $page, $sid)) html_error('Login Failed: SessionID token not found.', 0);

		$this->cookie['SID'] = $sid[1];
		$this->page = $this->GetPage($link, $this->cookie);
		$this->cookie = GetCookiesArr($this->page, $this->cookie);
	}

	private function verify_age($link) {
		$this->login($link);

		if (!preg_match('@Location: https?://(www\.)?youtube\.com/verify_age@i', $this->page)) return;

		$url = 'http://www.youtube.com/verify_age?next_url=' . urlencode($link);
		$page = $this->GetPage($url, $this->cookie);

		$post = array();
		$post['next_url'] = urlencode($link);
		$post['set_racy'] = 'true';
		$post['session_token'] = urlencode(cut_str($page, "'XSRF_TOKEN': '", "'"));

		$urlc = 'http://www.youtube.com/verify_age?action_confirm=true';
		$page = $this->GetPage($urlc, $this->cookie, $post, $url);
		$this->page = $this->GetPage("$link&has_verified=1", $this->cookie, 0, $urlc);
	}

	private function verify_controversy($link) {
		$url = 'http://www.youtube.com/verify_controversy?next_url=' . urlencode($link);
		$page = $this->GetPage($url, $this->cookie);

		$post = array();
		$post['next_url'] = urlencode($link);
		// $post['ignorecont'] = 'on';
		$post['session_token'] = urlencode(cut_str($page, "'XSRF_TOKEN': '", "'"));

		$urlc = 'http://www.youtube.com/verify_controversy?action_confirm=1';
		$page = $this->GetPage($urlc, $this->cookie, $post, $url);
		$this->page = $this->GetPage("$link&skipcontrinter=1", $this->cookie, 0, $urlc);
	}

	private function GetVideosArr($fmtmaps) {
		$fmturls = array();
		foreach ($fmtmaps as $fmtlist) {
			$arr1 = explode('&', $fmtlist);
			$fmtlist = $arr3 = array();
			foreach ($arr1 as $key => $val) {
				$arr2 = explode('=', $val);
				foreach ($arr2 as $key2 => $val2) {
					$arr3[] = $val2;
				}
			}
			for ($i = 0; $i <= count($arr3); $i += 2) {
				if (array_key_exists($i, $arr3)) {
					if ($arr3[$i] != "") {
						$fmtlist[trim($arr3[$i])] = $arr3[$i+1];
					}
				}
			}
			$fmtlist = array_map('urldecode', $fmtlist);
			$fmturls[$fmtlist['itag']] = $fmtlist['url'];
			if (stripos($fmtlist['url'], '&signature=') === false) $fmturls[$fmtlist['itag']] .= '&signature='.$fmtlist['sig'];
		}
		return $fmturls;
	}

	private function CheckErrors() {
		$page = cut_str($this->page, 'class="yt-alert-message">', '</');
		if (empty($page)) $page = $this->page;
		$servw = (isset($_GET['useproxy']) && !empty($_GET['proxy'])) ? 'proxy' : 'server';
		$errors = array();
		$errors[] = array('find' => 'The video you have requested is not available.'); // Empty or no 'error' key will show 'find'.
		$errors[] = array('find' => 'This video has been removed by the user.');
		$errors[] = array('find' => 'The uploader has not made this video available in your country.', 'error' => "The uploader has not made this video available in this $servw's country.");
		$errors[] = array('find' => ', who has blocked it in your country on copyright grounds.', 'error' => "This video has content with copyright and it's blocked in this $servw's country.");
		$errors[] = array('find' => 'This video is no longer available because the uploader has closed their YouTube account.');
		$errors[] = array('find' => 'This video is no longer available because the YouTube account associated with this video has been terminated.');
		foreach ($errors as $err) {
			if (empty($err['find'])) continue;
			is_present($page, $err['find'], (!empty($err['error']) ? $err['error'] : ''));
		}
	}

	private function QSelector($link) {
		global $PHP_SELF;
		$fmtlangs = array(38 => 377, 37 => 228, 22 => 227, 45 => 225, 35 => 223, 44 => 389, 34 => 222, 43 => 224, 18 => 226, 5 => 221, 17 => 220);
		echo "\n<br /><br /><h3 style='text-align: center;'>".lang(216).".</h4>";
		echo "\n<center><form name='dl' action='$PHP_SELF' method='post'>\n";
		echo "<input type='hidden' name='yt_QS' value='on' />\n";
		echo '<input type="checkbox" name="ytdirect" /><small>&nbsp;'.lang(217).'</small><br />';
		echo "<select name='yt_fmt' id='vbb_qs'>\n";
		foreach ($this->fmturlmaps as $fmt => $url) {
			if (in_array($fmt, $this->fmts)) echo '<option '.($fmt == 18 ? "selected='selected' " : '')."value='$fmt'>".lang($fmtlangs[$fmt]).(!empty($sizes[$fmt]) ? ' ('.$sizes[$fmt].')' : '')."</option>\n";
		}
		echo "</select>\n";
		if (count($this->cookie) > 0) $this->cookie = encrypt(CookiesToStr($this->cookie));
		$data = $this->DefaultParamArr($link, $this->cookie);
		$data['ytube_mp4'] = 'on';
		foreach ($data as $n => $v) echo("<input type='hidden' name='$n' id='$n' value='$v' />\n");

		echo "<input type='submit' name='submit' value='".lang(209)."' />\n";
		echo "</form></center>\n</body>\n</html>";
		exit;
	}
}

//re-written by szal based on original plugin by eqbal
//updated 07 June 2010
// [28-03-2011]  Fixed (!$video_id) regex. - Th3-822
// [29-03-2011]  Added support for captcha. - Th3-822
// [02-04-2011]  Fixed redirect error. [26-04-2011]  Added error msgs.  - Th3-822
// [04-8-2011]  Fixed for recent changes in fmt_stream_map content & some edits maded for work fine. (Redirect is needed yet) - Th3-822
// [12-8-2011]  Added support for videos that need login for verify age & Changed fmt order by quality & Fixed regexps for fileext. - Th3-822
// [13-8-2011]  Some fixes & removed not working code & fixed verify_age function. - Th3-822
// [17-9-2011]  Added function for skip 'verify_controversy' on youtube && Fixed cookies after captcha && Little changes. - Th3-822
// [26-1-2012]  Fixed regexp for get title, added a quality selector (if the one in template is removed) and some changes in the code. - Th3-822
// [17-5-2012]  Fixed captcha (Now uses reCaptcha). - Th3-822
// [14-9-2012]  Fixed Download links & small changes. - Th3-822
// [07-10-2012]  Fixed for redirect at link. - Th3-822

?>