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Current File : /home/institutonamaste/www/admin/js/kcfinder/lib/helper_phpGet.php

<?php

/** This file is part of KCFinder project
  *
  *      @desc Helper class for downloading URLs
  *   @package KCFinder
  *   @version 3.12
  *    @author Pavel Tzonkov <sunhater@sunhater.com>
  * @copyright 2010-2014 KCFinder Project
  *   @license http://opensource.org/licenses/GPL-3.0 GPLv3
  *   @license http://opensource.org/licenses/LGPL-3.0 LGPLv3
  *      @link http://kcfinder.sunhater.com
  */

namespace kcfinder;

class phpGet {

    static public $methods = array('curl', 'fopen', 'http', 'socket');
    static public $urlExpr = '/^([a-z]+):\/\/((([\p{L}\d\-]+\.)+[\p{L}]{1,4})(\:(\d{1,6}))?(\/.*)*)?$/u';
    static public $socketExpr = '/^[A-Z]+\/\d+(\.\d+)\s+\d+\s+OK\s*([a-zA-Z0-9\-]+\:\s*[^\n]*\n)*\s*([a-f0-9]+\r?\n)?(.*)$/s';

    static public function get($url, $file=null, $method=null) {
        if ($file === true)
            $file = basename($url);
        if ($file !== null)  {
            if (is_dir($file))
                $file = rtrim($file, '/') . '/' . basename($url);
            $exists = file_exists($file);
            if (!@touch($file))
                return false;
            if (!$exists)
                @unlink($file);
        }

        if (in_array($method, self::$methods, true)) {
            $check = "check_$method";
            $get = "get_$method";
            if (self::$check())
                $content = self::$get($url);
            else
                return false;
        } else {

            foreach (self::$methods as $m) {
                $check = "check_$m";
                $get = "get_$m";
                if (self::$check()) {
                    $content = self::$get($url);
                    if ((($method !== true) && (strtolower($method) != "all")) ||
                        ($content !== false)
                    )
                        break;
                }
            }
            if (!isset($content))
                return false;
        }

        return ($file !== null)
            ? @file_put_contents($file, $content)
            : $content;
    }

    static public function get_fopen($url) {
        return @file_get_contents($url);
    }

    static public function get_curl($url) {
        return (
            (false !== (   $curl = @curl_init($url)                                       )) &&
            (              @ob_start()                    ||  (@curl_close($curl) && false)) &&
            (              @curl_exec($curl)              ||  (@curl_close($curl) && false)) &&
            ((false !== (  $content = @ob_get_clean()  )) ||  (@curl_close($curl) && false)) &&
            (              @curl_close($curl)             ||  true)
        )
            ? $content
            : false;
    }

    static public function get_http($url) {
        return (
            (false !== ($content = @http_get($url))) &&
            (
                (
                    preg_match(self::$socketExpr, $content, $match) &&
                    false !== ($content = $match[4])
                ) || true
            )
        )
            ? $content
            : false;
    }

    static public function get_socket($url) {
        if (!preg_match(self::$urlExpr, $url, $match))
            return false;

        $protocol = $match[1];
        $host = $match[3];
        $port = strlen($match[6]) ? $match[6] : 80;
        $path = strlen($match[7]) ? $match[7] : "/";

        $cmd =
            "GET $path " . strtoupper($protocol) . "/1.1\r\n" .
            "Host: $host\r\n" .
            "Connection: Close\r\n\r\n";

        if ((false !== (  $socket = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP)  )) &&
            (false !==    @socket_connect($socket, $host, $port)                    ) &&
            (false !==    @socket_write($socket, $cmd, strlen($cmd))                ) &&
            (false !== (  $content = @socket_read($socket, 2048)                   ))
        ) {
            do {
                $piece = @socket_read($socket, 2048);
                $content .= $piece;
            } while ($piece);

            $content = preg_match(self::$socketExpr, $content, $match)
                ? $match[4] : false;
        }

        if (isset($socket) && is_resource($socket))
            @socket_close($socket);
        else
            return false;

        return isset($content) ? $content : false;
    }

    static private function check_fopen() {
        return
            ini_get('allow_url_fopen') &&
            function_exists('file_get_contents');
    }

    static private function check_curl() {
        return
            function_exists('curl_init') &&
            function_exists('curl_exec') &&
            function_exists('curl_close') &&
            function_exists('ob_start') &&
            function_exists('ob_get_clean');
    }

    static private function check_http() {
        return function_exists('http_get');
    }

    static private function check_socket() {
        return
            function_exists('socket_create') &&
            function_exists('socket_connect') &&
            function_exists('socket_write') &&
            function_exists('socket_read') &&
            function_exists('socket_close');
    }
}

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