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#!/usr/bin/php
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#!/usr/bin/php
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<?php
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<?php
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// ViaThinkSoft YouTube Downloader Util 2.1
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// ViaThinkSoft YouTube Downloader Util 2.1.1
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// Revision: 2018-04-16
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// Revision: 2019-08-05
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// Author: Daniel Marschall <www.daniel-marschall.de>
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// Author: Daniel Marschall <www.daniel-marschall.de>
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// Licensed under the terms of GPLv3
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// Licensed under the terms of the Apache 2.0 license
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//
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//
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// Syntax:
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// Syntax:
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// ./ytdwn [-t|--type v:[ext]|a:[ext]] (default v:)
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// ./ytdwn [-t|--type v:[ext]|a:[ext]] (default v:)
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//         [-o|--outputDir <dir>]      (default current working directory)
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//         [-o|--outputDir <dir>]      (default current working directory)
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//         [-a|--alreadyDownloaded <file>]
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//         [-a|--alreadyDownloaded <file>]
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if (count($rest_args) == 0) syntax_error("Please enter at least one desired video for downloading");
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if (count($rest_args) == 0) syntax_error("Please enter at least one desired video for downloading");
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if ($failTreshold <= 0) syntax_error("Fail treshold has invalid value. Must be >0.");
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if ($failTreshold <= 0) syntax_error("Fail treshold has invalid value. Must be >0.");
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// Try to install youtube-dl, if it does not exist
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// Try to download/update youtube-dl into local directory
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$newest_version_md5 = get_latest_ytdl_md5sum();
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if (command_exists(__DIR__.'/youtube-dl')) {
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if (!$newest_version_md5) {
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	fwrite(STDERR, "Failed to get MD5 sum of latest version of 'youtube-dl' from GitHub. Will not try to download/update 'youtube-dl' into local directory.\n");
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} else {
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	if (!file_exists(__DIR__.'/youtube-dl') || ($newest_version_md5 != md5_file(__DIR__.'/youtube-dl'))) {
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		// Try to download/update the file in our directory. It should be the newest available, since YT often breaks downloader
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	define('YTDL_EXE', __DIR__.'/youtube-dl');
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		if (file_exists(__DIR__.'/youtube-dl')) {
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} else if (command_exists('youtube-dl')) {
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			echo "Trying to update 'youtube-dl' in local directory...\n";
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		} else {
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	define('YTDL_EXE', 'youtube-dl');
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			echo "Trying to download 'youtube-dl' into local directory...\n";
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		}
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		if (!@file_put_contents(__DIR__.'/youtube-dl', file_get_contents('https://yt-dl.org/downloads/latest/youtube-dl'))) {
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			fwrite(STDERR, "Failed to download 'youtube-dl' into local directory (file_get_contents).\n");
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} else {
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		} else {
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	@file_put_contents(__DIR__.'/youtube-dl', file_get_contents('https://yt-dl.org/downloads/latest/youtube-dl'));
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	@chmod(__DIR__.'/youtube-dl', 0544);
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			if (!@chmod(__DIR__.'/youtube-dl', 0544)) {
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				fwrite(STDERR, "Failed to download 'youtube-dl' into local directory (chmod 544).\n");
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				@unlink(__DIR__.'/youtube-dl'); // try to delete, otherwise we might try to execute a non-executable file
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			}
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		}
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	}
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}
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	if (command_exists(__DIR__.'/youtube-dl')) {
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if (command_exists(__DIR__.'/youtube-dl')) {
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	echo "Will use 'youtube-dl' from local directory\n";
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		define('YTDL_EXE', __DIR__.'/youtube-dl');
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	define('YTDL_EXE', __DIR__.'/youtube-dl');
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	} else {
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} else {
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	// Download failed. Is at least a package installed?
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	if (command_exists('youtube-dl')) {
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		echo "Will use 'youtube-dl' from Linux package\n";
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		define('YTDL_EXE', 'youtube-dl');
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	} else {
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		fwrite(STDERR, "This script requires the tool/package 'youtube-dl'. Please install it first.\n");
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		fwrite(STDERR, "This script requires the tool/package 'youtube-dl'. Please install it first.\n");
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		exit(1);
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		exit(1);
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	}
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	}
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}
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}
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		$failcnt++;
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		$failcnt++;
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		$dest_neu = "$namewoext ($failcnt)$ext";
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		$dest_neu = "$namewoext ($failcnt)$ext";
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	}
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	}
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	return rename($src, $dest_neu);
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	return rename($src, $dest_neu);
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}
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}
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function get_latest_ytdl_md5sum() {
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	$ch = curl_init();
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	curl_setopt($ch, CURLOPT_URL, 'https://yt-dl.org/downloads/latest/MD5SUMS');
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	#curl_setopt($ch, CURLOPT_HEADER, false);
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	curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
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	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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	$cont = curl_exec($ch);
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	if (preg_match('@^(.+)  youtube\-dl$@ismU', $cont, $m)) {
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		return $m[1];
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	} else {
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		return false;
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	}
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}