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#!/usr/bin/php<?php// ViaThinkSoft YouTube Downloader Util 2.2// Revision: 2020-07-25// Author: Daniel Marschall <www.daniel-marschall.de>// Licensed under the terms of the Apache 2.0 license//// For syntax and other documentation, please read the file README.// ------------------------------------------------------------------------------------------------error_reporting(E_ALL | E_NOTICE | E_STRICT | E_DEPRECATED);define('AUTO_API_KEY', '~/.yt_api_key');define('AUTO_COOKIE_FILE', '~/.yt_cookies');define('DOWNLOAD_SIMULATION_MODE', false);define('DEFAULT_SEARCH_ORDER', 'relevance');define('DEFAULT_SEARCH_MAXRESULTS', 10);putenv("LANG=de_DE.UTF-8"); // required if video titles contain non-ASCII symbolsrequire_once __DIR__ . '/youtube_functions.inc.phps';// Check if we are running in command lineif (PHP_SAPI !== 'cli') {fwrite(STDERR, "Error: Can only run in CLI mode\n");exit(2);}// Global vars$listFilenameStack = array();// Default values$allow_creation_outputdir = false;$type = 'v:';$outputDir = '';$alreadyDownloaded = '';$failList = '';$failTreshold = 3;$rest_args = array();$verbose = false;$mp3id_transfer = true;$apikey = '';$resultcache = '';$extra_args =// '-k ' . // The additional "-k" option in the above makes youtube-dl keep downloaded videos.'-i ' . // continue upon download errors'-c '; // resume partially downloaded video files$default_template = '%(title)s-%(id)s.%(ext)s';$cookie_file = AUTO_COOKIE_FILE;// Parse arguments// We do not use getopt() at the moment, because the important functionality "optind" is only available in PHP 7.1, which is not yet distributed with most of the stable Linux distros$init_extra_args = false;$argv_bak = $argv;array_shift($argv_bak);while (count($argv_bak) > 0) {$arg = array_shift($argv_bak);$arg2 = $arg . ' ' . (isset($argv_bak[0]) ? $argv_bak[0] : '');if (preg_match('@^(/t|\-t|\-\-type)(\s+|=)(.*)$@s', $arg2, $m)) {array_shift($argv_bak);if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);$type = $m[3];} else if (preg_match('@^(/o|\-o|\-\-outputDir)(\s+|=)(.*)$@s', $arg2, $m)) {array_shift($argv_bak);if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);$outputDir = $m[3];} else if (preg_match('@^(/a|\-a|\-\-alreadyDownloaded)(\s+|=)(.*)$@s', $arg2, $m)) {array_shift($argv_bak);if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);$alreadyDownloaded = $m[3];} else if (preg_match('@^(/f|\-f|\-\-failList)(\s+|=)(.*)$@s', $arg2, $m)) {array_shift($argv_bak);if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);$failList = $m[3];} else if (preg_match('@^(/F|\-F|\-\-failTreshold)(\s+|=)(.*)$@s', $arg2, $m)) {array_shift($argv_bak);if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);$failTreshold = $m[3];} else if (preg_match('@^(/C|\-C|\-\-resultcache)(\s+|=)(.*)$@s', $arg2, $m)) {array_shift($argv_bak);if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);$resultcache = $m[3];} else if (preg_match('@^(/T|\-T|\-\-default-template)(\s+|=)(.*)$@s', $arg2, $m)) {array_shift($argv_bak);if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);$default_template = $m[3];} else if (preg_match('@^(/A|\-A|\-\-api-key)(\s+|=)(.*)$@s', $arg2, $m)) {array_shift($argv_bak);if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);$apikey = file_exists($m[3]) ? trim(file_get_contents($m[3])) : $m[3];} else if (preg_match('@^(\-\-cookies)(\s+|=)(.*)$@s', $arg2, $m)) {array_shift($argv_bak);if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);$cookie_file = file_exists($m[3]) ? trim(file_get_contents($m[3])) : $m[3];} else if (preg_match('@^(/X|\-X|\-\-extra-args)(\s+|=)(.*)$@s', $arg2, $m)) {array_shift($argv_bak);if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);if ($init_extra_args) {$extra_args .= ' ' . $m[3]; // user has multiple "-X" arguments. append.} else {$extra_args = $m[3]; // overwrite defaults$init_extra_args = true;}} else if (preg_match('@^(/\?|/h|\-\?|\-h|\-\-help)$@s', $arg, $m)) {if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);help();} else if (preg_match('@^(/V|\-V|\-\-version)$@s', $arg, $m)) {if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);version();} else if (preg_match('@^(/v|\-v|\-\-verbose)$@s', $arg, $m)) {if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);$verbose = true;} else if (preg_match('@^(/N|\-N|\-\-no-mp3-tagtransfer)$@s', $arg, $m)) {if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);$mp3id_transfer = false;} else if (preg_match('@^(/O|\-O|\-\-create-outputdir)$@s', $arg, $m)) {if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);$allow_creation_outputdir = true;} else if ($arg == '--') {if (count($rest_args) > 0) syntax_error("Invalid argument: ".$rest_args[0]);$rest_args = $argv_bak;break;} else {$rest_args[] = $arg;}}unset($arg);unset($argv_bak);unset($init_extra_args);// Validity checksif ((substr($type,0,2) != 'a:') && (substr($type,0,2) != 'v:')) syntax_error("Type must be either 'v:' or 'a:'. '$type' is not valid.");if (count($rest_args) == 0) syntax_error("Please enter at least one desired video for downloading");if ($failTreshold <= 0) syntax_error("Fail treshold has invalid value. Must be >0.");$cookie_file = expand_tilde($cookie_file);if (!file_exists($cookie_file)) $cookie_file = '';// Try to download/update youtube-dl into local directory$newest_version_md5 = get_latest_ytdl_md5sum();if (!$newest_version_md5) {fwrite(STDERR, "Failed to get MD5 sum of latest version of 'youtube-dl' from GitHub. Will not try to download/update 'youtube-dl' into local directory.\n");} else {if (!file_exists(__DIR__.'/youtube-dl') || ($newest_version_md5 != md5_file(__DIR__.'/youtube-dl'))) {// Try to download/update the file in our directory. It should be the newest available, since YT often breaks downloaderif (file_exists(__DIR__.'/youtube-dl')) {echo "Trying to update 'youtube-dl' in local directory...\n";} else {echo "Trying to download 'youtube-dl' into local directory...\n";}if (!@file_put_contents(__DIR__.'/youtube-dl', file_get_contents('https://yt-dl.org/downloads/latest/youtube-dl'))) {fwrite(STDERR, "Failed to download 'youtube-dl' into local directory (file_get_contents).\n");} else {if (!@chmod(__DIR__.'/youtube-dl', 0544)) {fwrite(STDERR, "Failed to download 'youtube-dl' into local directory (chmod 544).\n");@unlink(__DIR__.'/youtube-dl'); // try to delete, otherwise we might try to execute a non-executable file}}}}if (command_exists(__DIR__.'/youtube-dl')) {echo "Will use 'youtube-dl' from local directory\n";define('YTDL_EXE', __DIR__.'/youtube-dl');} else {// Download failed. Is at least a package installed?if (command_exists('youtube-dl')) {echo "Will use 'youtube-dl' from Linux package\n";define('YTDL_EXE', 'youtube-dl');} else {fwrite(STDERR, "This script requires the tool/package 'youtube-dl'. Please install it first.\n");exit(1);}}// Now process the videosyt_set_apikey_callback('_getApikey');foreach ($rest_args as $resource) {if ($verbose) echo "Handle: $resource\n";if (strpos($resource, ':') === false) {fwrite(STDERR, "Invalid resource '$resource' (you are missing the prefix, e.g. vurl: or vid:). Skipping.\n");} else {list($resourceType, $resourceValue) = explode(':', $resource, 2);ytdwn_handle_resource($resourceType, $resourceValue);}}// ------------------------------------------------------------------------------------------------function ytdwn_handle_resource($resourceType, $resourceValue) {if ($resourceType == 'vid') {$video_id = parse_quoting($resourceValue);ytdwn_video_id($video_id);} else if ($resourceType == 'vurl') {$video_url = parse_quoting($resourceValue);$video_id = getVideoIDFromURL($video_url);if (!$video_id) {fwrite(STDERR, "$video_url is not a valid YouTube video URL. Skipping.\n");} else {ytdwn_video_id($video_id);}} else if ($resourceType == 'pid') {$playlist_id = parse_quoting($resourceValue);ytdwn_playlist_id($playlist_id);} else if ($resourceType == 'purl') {$playlist_url = parse_quoting($resourceValue);$playlist_id = getPlaylistIDFromURL($playlist_url);if (!$playlist_id) {fwrite(STDERR, "$playlist_url is not a valid YouTube playlist URL. Skipping\n");} else {ytdwn_playlist_id($playlist_id);}} else if ($resourceType == 'cid') {$channel_id = parse_quoting($resourceValue);if (preg_match('@\[search=(.+)\]@ismU', $channel_id, $m)) {$search = $m[1];$channel_id = preg_replace('@\[search=(.+)\]@ismU', '', $channel_id);} else {$search = ''; // default}$search = parse_quoting($search);ytdwn_channel_id($channel_id, $search);} else if ($resourceType == 'cname') {$channel_name = parse_quoting($resourceValue);if (preg_match('@\[search=(.+)\]@ismU', $channel_name, $m)) {$search = $m[1];$channel_name = preg_replace('@\[search=(.+)\]@ismU', '', $channel_name);} else {$search = ''; // default}$search = parse_quoting($search);$channel_name = parse_quoting($channel_name);$channel_id = yt_get_channel_id($channel_name);if (!$channel_id) {fwrite(STDERR, "URL $channel_name is a valid YouTube channel or username. Skipping.\n");} else {ytdwn_channel_id($channel_id, $search);}} else if ($resourceType == 'curl') {$channel_url = parse_quoting($resourceValue);if (preg_match('@\[search=(.+)\]@ismU', $channel_url, $m)) {$search = $m[1];$channel_url = preg_replace('@\[search=(.+)\]@ismU', '', $channel_url);} else {$search = ''; // default}$search = parse_quoting($search);$channel_url = parse_quoting($channel_url);$channel_id = curl_to_cid($channel_url);if (!$channel_id) {fwrite(STDERR, "URL $channel_url is a valid YouTube channel oder username URL. Skipping\n");} else {ytdwn_channel_id($channel_id, $search);}} else if ($resourceType == 'search') {$searchterm = parse_quoting($resourceValue);$order = '';if (preg_match('@\[order=(.+)\]@ismU', $searchterm, $m)) {$order = $m[1];$searchterm = preg_replace('@\[order=(.+)\]@ismU', '', $searchterm);} else {$order = DEFAULT_SEARCH_ORDER; // default}$order = parse_quoting($order);$maxresults = '';if (preg_match('@\[maxresults=(.+)\]@ismU', $searchterm, $m)) {$maxresults = $m[1];$searchterm = preg_replace('@\[maxresults=(.+)\]@ismU', '', $searchterm);} else {$maxresults = DEFAULT_SEARCH_MAXRESULTS; // default}$maxresults = parse_quoting($maxresults);$searchterm = parse_quoting($searchterm);ytdwn_search($searchterm, $order, $maxresults);} else if ($resourceType == 'list') {$list_files = glob(parse_quoting($resourceValue)); // in case the user entered a wildcard, e.g. *.listforeach ($list_files as $list_file) {if (!file_exists($list_file)) {fwrite(STDERR, "List file $list_file does not exist. Skipping\n");} else {ytdwn_list_file($list_file);}}} else {fwrite(STDERR, "Resource type '$resourceType' is not valid. Skipping $resourceType:$resourceValue.\n");}}function ytdwn_list_file($list_file) {global $listFilenameStack, $verbose;if ($verbose) echo "Processing list file '$list_file' ...\n";$listFilenameStack[] = $list_file;$lines = file($list_file);foreach ($lines as $line) {$line = trim($line);if ($line == '') continue;if ($line[0] == '#') continue;if (strpos($line, ':') === false) {fwrite(STDERR, "Invalid resource '$line' (you are missing the prefix, e.g. vurl: or vid:). Skipping.\n");} else {list($resourceType, $resourceValue) = explode(':',$line,2);ytdwn_handle_resource($resourceType, $resourceValue);}}array_pop($listFilenameStack);}function ytdwn_channel_id($channel_id, $search='') {global $type;global $verbose;if ($verbose) echo "Processing channel ID '$channel_id' ...\n";// List the videos of the channel$cont = !empty(_getResultcache()) && file_exists(_getResultcache()) ? file_get_contents(_getResultcache()) : '';$out = json_decode($cont, true);if ($out == NULL) $out = array();if (!empty(_getResultcache())) {$stats = yt_get_channel_stats($channel_id);$videocount = $stats['videoCount'];$key = (!empty($search)) ? 'cid:'.$channel_id.'/'.$search : 'cid:'.$channel_id;if (!isset($out[$key])) $out[$key] = array();$videocount_old = isset($out[$key]['count']) ? $out[$key]['count'] : -1;} else {$videocount = -1;$videocount_old = -2;$key = '';}if ($videocount_old != $videocount) { // Attention: This might not work if videos are deleted and added (= the count stays the same)if ($verbose && !empty(_getResultcache())) echo "Video count changed from $videocount_old to $videocount\n";$out[$key]['count'] = $videocount;if (!empty($search)) {$out[$key]['results'] = yt_channel_items($channel_id, $search);} else {$out[$key]['results'] = yt_channel_items($channel_id);}} else {if ($verbose) echo "Video count for channel is still $videocount, keep ".count($out[$key]['results'])." results.\n";}// Save the cachetry {if (!empty(_getResultcache())) file_put_contents(_getResultcache(), json_encode($out));} catch(Exception $e) {fwrite(STDERR, "Cannot write result cache\n");}// Now downloadif (!$out[$key]['results']) {fwrite(STDERR, "Cannot get result for channel with ID '$channel_id'\n");return;}foreach ($out[$key]['results'] as list($id, $title)) {if ($verbose) echo "Downloading '$title' as ".hf_type($type)." ...\n";ytdwn_video_id($id);}}function ytdwn_playlist_id($playlist_id) {global $type;global $verbose;if ($verbose) echo "Processing playlist ID '$playlist_id' ...\n";// List the videos of the playlist$cont = !empty(_getResultcache()) && file_exists(_getResultcache()) ? file_get_contents(_getResultcache()) : '';$out = json_decode($cont, true);if ($out == NULL) $out = array();if (!empty(_getResultcache())) {$stats = yt_get_playlist_stats($playlist_id);$videocount = $stats['itemCount'];$key = 'pid:'.$playlist_id;if (!isset($out[$key])) $out[$key] = array();$videocount_old = isset($out[$key]['count']) ? $out[$key]['count'] : -1;} else {$videocount = -1;$videocount_old = -2;$key = '';}if ($videocount_old != $videocount) { // Attention: This might not work if videos are deleted and added (= the count stays the same)if ($verbose && !empty(_getResultcache())) echo "Video count changed from $videocount_old to $videocount\n";$out[$key]['count'] = $videocount;$out[$key]['results'] = yt_playlist_items($playlist_id);} else {if ($verbose) echo "Video count for playlist is still $videocount, keep ".count($out[$key]['results'])." results.\n";}// Save the cachetry {if (!empty(_getResultcache())) file_put_contents(_getResultcache(), json_encode($out));} catch(Exception $e) {fwrite(STDERR, "Cannot write result cache\n");}// Now downloadif (!$out[$key]['results']) {fwrite(STDERR, "Cannot get result for playlist with ID '$playlist_id'\n");return;}foreach ($out[$key]['results'] as list($id, $title)) {if ($verbose) echo "Downloading '$title' as ".hf_type($type)." ...\n";ytdwn_video_id($id);}}function ytdwn_search($search, $order='', $maxresults=-1) {global $type;global $verbose;if ($verbose) echo "Searching for '$search' ...\n";// Perform the search and list the videos$results = yt_search_items($search, $order, $maxresults);// Now downloadif (!$results) {fwrite(STDERR, "Cannot get data for search '$search'\n");return;}foreach ($results as list($id, $title)) {if ($verbose) echo "Downloading '$title' as ".hf_type($type)." ...\n";ytdwn_video_id($id);}}function ytdwn_video_id($video_id) {global $type;global $verbose;global $mp3id_transfer;global $extra_args;global $default_template;global $failTreshold;global $cookie_file;if (DOWNLOAD_SIMULATION_MODE) {echo "SIMULATE download of video id $video_id as ".hf_type($type)." to "._getOutputDir()."\n";return;}if (!empty(_getAlreadyDownloaded()) && in_alreadydownloaded_file($type, $video_id)) {if ($verbose) echo "Video $video_id has already been downloaded. Skip.\n";return true;}if (!empty(_getFailList()) && (ytdwn_fail_counter($type, $video_id) >= $failTreshold)) {if ($verbose) echo "Video $video_id has failed too often. Skip.\n";return true;}$out = '';$code = -1;$outputTemplate = rtrim(_getOutputDir(), '/').'/'.$default_template;if (substr($type,0,2) == 'v:') {$format = substr($type,2);if (!empty($format)) {exec(YTDL_EXE.' -o '.escapeshellarg($outputTemplate).' '.$extra_args.(empty($cookie_file) ? '' : ' --cookies '.$cookie_file).' '.escapeshellarg(vid_to_vurl($video_id)).' --format '.escapeshellarg($format), $out, $code);} else {exec(YTDL_EXE.' -o '.escapeshellarg($outputTemplate).' '.$extra_args.(empty($cookie_file) ? '' : ' --cookies '.$cookie_file).' '.escapeshellarg(vid_to_vurl($video_id)), $out, $code);}} else if (substr($type,0,2) == 'a:') {$format = substr($type,2);if (!empty($format)) {exec(YTDL_EXE.' -o '.escapeshellarg($outputTemplate).' '.$extra_args.(empty($cookie_file) ? '' : ' --cookies '.$cookie_file).' '.escapeshellarg(vid_to_vurl($video_id)).' --extract-audio --audio-format '.escapeshellarg($format), $out, $code);} else {exec(YTDL_EXE.' -o '.escapeshellarg($outputTemplate).' '.$extra_args.(empty($cookie_file) ? '' : ' --cookies '.$cookie_file).' '.escapeshellarg(vid_to_vurl($video_id)).' --extract-audio', $out, $code);}if (($mp3id_transfer) && ($format == 'mp3')) mp3_transfer_vid_to_id();} else assert(false);if ($code == 0) {if ($verbose) fwrite(STDOUT, "Successfully downloaded video ID $video_id as ".hf_type($type)."\n");if (!empty(_getAlreadyDownloaded())) {try {addto_alreadydownloaded_file($type, $video_id);} catch(Exception $e) {fwrite(STDERR, "Cannot add to already downloaded file\n");}}} else {fwrite(STDERR, "Error downloading $video_id! (Code $code)\n");if (!empty(_getFailList())) {try {ytdwn_register_fail($type, $video_id, $code);} catch(Exception $e) {fwrite(STDERR, "Cannot register fail\n");}}return false;}return true;}function vid_to_vurl($video_id) {return "http://www.youtube.com/watch/?v=$video_id";}function EndsWith($Haystack, $Needle){return strrpos($Haystack, $Needle) === strlen($Haystack)-strlen($Needle);}function mp3_transfer_vid_to_id() {global $verbose;global $default_template;if (!command_exists('id3v2')) {if ($verbose) echo "Note: Tool id3v2 is not installed. Will not transfer the YouTube ID into the MP3 ID Tag\n";return false;}if (!EndsWith($default_template, '-%(id)s.%(ext)s')) {if ($verbose) echo "Note: Cannot transfer video tag to MP3 because default template does not end with '-%(id)s.%(ext)s'.\n";return false;}$allok = true;$files = glob(rtrim(_getOutputDir(), '/').'/*-???????????.mp3');foreach ($files as $filename) {if (!preg_match('@-([a-zA-Z0-9\-_]{11})\.mp3$@ismU', $filename, $m)) continue;$yt_id = $m[1];if (!yt_check_video_id($yt_id)) continue; // just to be sure$orig_ts = filemtime($filename);system('id3v2 -c '.escapeshellarg($yt_id).' '.escapeshellarg($filename), $ec);touch($filename, $orig_ts);if ($ec != 0) {fwrite(STDERR, "Cannot set ID tag for file $filename\n");$allok = false;continue;}$target_filename = str_replace("-$yt_id.mp3", '.mp3', $filename);if (!intelligent_rename($filename, $target_filename)) {fwrite(STDERR, "Cannot move file $filename to $target_filename\n");$allok = false;continue;}}return $allok;}function curl_to_cid($channel_url) {if (preg_match("@https{0,1}://(www\\.|)youtube\\.com/user/(.*)(&|\\?)@ismU", $channel_url.'&', $m)) {$username = $m[2];$channel_id = yt_get_channel_id($username);return $channel_id;} else if (preg_match("@https{0,1}://(www\\.|)youtube\\.com/channel/(.*)(&|\\?)@ismU", $channel_url.'&', $m)) {$channel_id = $m[2];return $channel_id;} else {return false;}}function in_alreadydownloaded_file($type, $video_id) {$lines = file(_getAlreadyDownloaded());foreach ($lines as $line) {if (trim($line) == rtrim($type,':').':'.$video_id) {return true;}}return false;}function addto_alreadydownloaded_file($type, $video_id) {file_put_contents(_getAlreadyDownloaded(), rtrim($type,':').':'.$video_id."\n", FILE_APPEND);}function syntax_error($msg) {fwrite(STDERR, "Syntax error: ".trim($msg)."\n");fwrite(STDERR, "Please use argument '--help' to show the syntax rules.\n");exit(2);}function _help() {global $argv;$out = '';$own = file_get_contents($argv[0]);$help = explode('// ----', $own, 2)[0];$help = preg_match_all('@^//(.*)$@mU', $help, $m);foreach ($m[1] as $line) {$out .= substr($line,1)."\n";}return $out;}function help() {echo _help();exit(0);}function version() {echo explode("\n\n", _help(), 2)[0]."\n";exit(0);}function command_exists($command) {// https://stackoverflow.com/questions/592620/check-if-a-program-exists-from-a-bash-script$ec = -1;system('command -v '.escapeshellarg($command).' > /dev/null', $ec);return ($ec == 0);}function hf_type($type) {if (strpos($type, ':') === false) return $type; // invalid type (missing ':')list($av, $format) = explode(':', $type);if ($av == 'a') $av = 'audio';else if ($av == 'v') $av = 'video';else return $type; // invalid typereturn (!empty($format)) ? $format.'-'.$av : $av;}function expand_tilde($path) {// Source: http://jonathonhill.net/2013-09-03/tilde-expansion-in-php/if (function_exists('posix_getuid') && strpos($path, '~') !== false) {$info = posix_getpwuid(posix_getuid());$path = str_replace('~', $info['dir'], $path);}return $path;}function _getLastListname() {global $listFilenameStack;$listname = ''; // defaultif (count($listFilenameStack) > 0) {$listname = $listFilenameStack[count($listFilenameStack)-1];$listname = pathinfo($listname, PATHINFO_FILENAME); // remove file extension, e.g. ".list"}return $listname;}function _getApiKey() {global $apikey;$out = $apikey;if (empty($out)) {$auto_api_key = AUTO_API_KEY;$auto_api_key = expand_tilde($auto_api_key);$auto_api_key = str_replace('[listname]', _getLastListname(), $auto_api_key);if (file_exists($auto_api_key)) {$out = trim(file_get_contents($auto_api_key));} else {syntax_error("Please specify a YouTube API key with argument '-A'.");}} else {$out = str_replace('[listname]', _getLastListname(), $out);$out = expand_tilde($out);if (file_exists($out)) {$out = trim(file_get_contents($out));} else {// Assume, $out is a key, not a file}}if (!yt_check_apikey_syntax($out)) syntax_error("'$out' is not a valid API key, not an existing file containing an API key.\n");return $out;}function _getResultCache() {global $resultcache;if (empty($resultcache)) return '';$out = expand_tilde($resultcache);$out = str_replace('[listname]', _getLastListname(), $out);if (!file_exists($out)) {@touch($out);if (!file_exists($out)) {fwrite(STDERR, "File '$out' cannot be created. Disable feature.\n");return '';}}return $out;}function _getAlreadyDownloaded() {global $alreadyDownloaded;if (empty($alreadyDownloaded)) return '';$out = expand_tilde($alreadyDownloaded);$out = str_replace('[listname]', _getLastListname(), $out);if (!file_exists($out)) {@touch($out);if (!file_exists($out)) {fwrite(STDERR, "File '$out' cannot be created. Disable feature.\n");return '';}}return $out;}function _getFailList() {global $failList;if (empty($failList)) return '';$out = expand_tilde($failList);$out = str_replace('[listname]', _getLastListname(), $out);if (!file_exists($out)) {@touch($out);if (!file_exists($out)) {fwrite(STDERR, "File '$out' cannot be created. Disable feature.\n");return '';}}return $out;}function _getOutputDir() {global $outputDir, $allow_creation_outputdir;if (empty($outputDir)) return '.';$out = expand_tilde($outputDir);$out = str_replace('[listname]', _getLastListname(), $out);if ($allow_creation_outputdir) {if (!is_dir($out)) {mkdir($out, true);if (!is_dir($out)) {fwrite(STDERR, "Output directory '$out' does not exist.\n");exit(1);}}} else {if (!is_dir($out)) {fwrite(STDERR, "Output directory '$out' does not exist.\n");exit(1);}}return $out;}function parse_quoting($str) {if ((substr($str,0,1) == '"') && (substr($str,-1,1) == '"')) {$str = substr($str,1,strlen($str)-2);$escape = false;$out = '';for ($i=0; $i<strlen($str); $i++) {$char = $str[$i];if ($char == '\\') {if ($escape) {$out .= $char;$escape = false;} else {$escape = true;}} else {$out .= $char;}}$str = $out;}return $str;}function ytdwn_register_fail($type, $video_id, $code) {// Note: Error code $code ist currently not used$file = _getFailList();$cont = file_get_contents($file);if (preg_match("@Video ID ".preg_quote($video_id,'@')." failed (\d+) time\(s\) with type ".preg_quote($type,'@')."@ismU", $cont, $m)) {$cont = preg_replace("@Video ID ".preg_quote($video_id,'@')." failed (\d+) time\(s\) with type ".preg_quote($type,'@')."@ismU","Video ID $video_id failed ".($m[1]+1)." time(s) with type $type", $cont);file_put_contents($file, $cont);} else {file_put_contents($file, "Video ID $video_id failed 1 time(s) with type $type\n", FILE_APPEND);}}function ytdwn_fail_counter($type, $video_id) {$file = _getFailList();$cont = file_get_contents($file);if (preg_match("@Video ID ".preg_quote($video_id,'@')." failed (\d+) time\(s\) with type ".preg_quote($type,'@')."@ismU", $cont, $m)) {return $m[1];} else {return 0;}}function intelligent_rename($src, $dest) {$pos = strrpos($dest, '.');$ext = substr($dest, $pos);$namewoext = substr($dest, 0, $pos);$failcnt = 1;$dest_neu = $dest;while (file_exists($dest_neu)) {$failcnt++;$dest_neu = "$namewoext ($failcnt)$ext";}return rename($src, $dest_neu);}function get_latest_ytdl_md5sum() {$ch = curl_init();curl_setopt($ch, CURLOPT_URL, 'https://yt-dl.org/downloads/latest/MD5SUMS');#curl_setopt($ch, CURLOPT_HEADER, false);curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);$cont = curl_exec($ch);if (preg_match('@^(.+) youtube\-dl$@ismU', $cont, $m)) {return $m[1];} else {return false;}}