mirror of
https://github.com/wallabag/wallabag.git
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125 lines
4.3 KiB
PHP
Executable file
125 lines
4.3 KiB
PHP
Executable file
<?php
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namespace Wallabag\CoreBundle\Helper;
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use \RecursiveIteratorIterator;
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use \RecursiveDirectoryIterator;
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final class Tools
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{
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/**
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* Download a file (typically, for downloading pictures on web server)
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*
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* @param $url
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* @return bool|mixed|string
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*/
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public static function getFile($url)
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{
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$timeout = 15;
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$useragent = "Mozilla/5.0 (Windows NT 5.1; rv:18.0) Gecko/20100101 Firefox/18.0";
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if (in_array ('curl', get_loaded_extensions())) {
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# Fetch feed from URL
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$curl = curl_init();
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curl_setopt($curl, CURLOPT_URL, $url);
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curl_setopt($curl, CURLOPT_TIMEOUT, $timeout);
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if (!ini_get('open_basedir') && !ini_get('safe_mode')) {
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curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
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}
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curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($curl, CURLOPT_HEADER, false);
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# for ssl, do not verified certificate
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curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
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curl_setopt($curl, CURLOPT_AUTOREFERER, TRUE );
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# FeedBurner requires a proper USER-AGENT...
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curl_setopt($curl, CURL_HTTP_VERSION_1_1, true);
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curl_setopt($curl, CURLOPT_ENCODING, "gzip, deflate");
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curl_setopt($curl, CURLOPT_USERAGENT, $useragent);
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$data = curl_exec($curl);
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$httpcode = curl_getinfo($curl, CURLINFO_HTTP_CODE);
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$httpcodeOK = isset($httpcode) and ($httpcode == 200 or $httpcode == 301);
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curl_close($curl);
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} else {
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# create http context and add timeout and user-agent
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$context = stream_context_create(
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array(
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'http' => array(
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'timeout' => $timeout,
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'header' => "User-Agent: " . $useragent,
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'follow_location' => true
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),
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'ssl' => array(
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'verify_peer' => false,
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'allow_self_signed' => true
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)
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)
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);
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# only download page lesser than 4MB
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$data = @file_get_contents($url, false, $context, -1, 4000000);
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if (isset($http_response_header) and isset($http_response_header[0])) {
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$httpcodeOK = isset($http_response_header) and isset($http_response_header[0]) and ((strpos($http_response_header[0], '200 OK') !== FALSE) or (strpos($http_response_header[0], '301 Moved Permanently') !== FALSE));
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}
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}
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# if response is not empty and response is OK
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if (isset($data) and isset($httpcodeOK) and $httpcodeOK) {
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# take charset of page and get it
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preg_match('#<meta .*charset=.*>#Usi', $data, $meta);
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# if meta tag is found
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if (!empty($meta[0])) {
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preg_match('#charset="?(.*)"#si', $meta[0], $encoding);
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# if charset is found set it otherwise, set it to utf-8
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$html_charset = (!empty($encoding[1])) ? strtolower($encoding[1]) : 'utf-8';
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if (empty($encoding[1])) $encoding[1] = 'utf-8';
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} else {
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$html_charset = 'utf-8';
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$encoding[1] = '';
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}
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# replace charset of url to charset of page
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$data = str_replace('charset=' . $encoding[1], 'charset=' . $html_charset, $data);
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return $data;
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}
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else {
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return FALSE;
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}
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}
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/**
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* Encode a URL by using a salt
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*
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* @param $string
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* @return string
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*/
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public static function encodeString($string)
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{
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return sha1($string . SALT);
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}
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public static function generateToken()
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{
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if (ini_get('open_basedir') === '') {
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if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
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// alternative to /dev/urandom for Windows
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$token = substr(base64_encode(uniqid(mt_rand(), true)), 0, 20);
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} else {
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$token = substr(base64_encode(file_get_contents('/dev/urandom', false, null, 0, 20)), 0, 15);
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}
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}
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else {
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$token = substr(base64_encode(uniqid(mt_rand(), true)), 0, 20);
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}
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return str_replace('+', '', $token);
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}
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}
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