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