<?php

/**

 * SimplePie

 *

 * A PHP-Based RSS and Atom Feed Framework.

 * Takes the hard work out of managing a complete RSS/Atom solution.

 *

 * Copyright (c) 2004-2022, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without modification, are

 * permitted provided that the following conditions are met:

 *

 * 	* Redistributions of source code must retain the above copyright notice, this list of

 * 	  conditions and the following disclaimer.

 *

 * 	* Redistributions in binary form must reproduce the above copyright notice, this list

 * 	  of conditions and the following disclaimer in the documentation and/or other materials

 * 	  provided with the distribution.

 *

 * 	* Neither the name of the SimplePie Team nor the names of its contributors may be used

 * 	  to endorse or promote products derived from this software without specific prior

 * 	  written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY

 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS

 * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR

 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 *

 * @package SimplePie

 * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue

 * @author Ryan Parman

 * @author Sam Sneddon

 * @author Ryan McCue

 * @link http://simplepie.org/ SimplePie

 * @license http://www.opensource.org/licenses/bsd-license.php BSD License

 */

namespace SimplePie;

/**

 * Used for fetching remote files and reading local files

 *

 * Supports HTTP 1.0 via cURL or fsockopen, with spotty HTTP 1.1 support

 *

 * This class can be overloaded with {@see \SimplePie\SimplePie::set_file_class()}

 *

 * @package SimplePie

 * @subpackage HTTP

 * @todo Move to properly supporting RFC2616 (HTTP/1.1)

 */

class File

{

    public $url;

    public $useragent;

    public $success = true;

    public $headers = [];

    public $body;

    public $status_code = 0;

    public $redirects = 0;

    public $error;

    public $method = \SimplePie\SimplePie::FILE_SOURCE_NONE;

    public $permanent_url;

    public function __construct($url, $timeout = 10, $redirects = 5, $headers = null, $useragent = null, $force_fsockopen = false, $curl_options = [])

    {

        if (class_exists('idna_convert')) {

            $idn = new \idna_convert();

            $parsed = \SimplePie\Misc::parse_url($url);

            $url = \SimplePie\Misc::compress_parse_url($parsed['scheme'], $idn->encode($parsed['authority']), $parsed['path'], $parsed['query'], null);

        }

        $this->url = $url;

        $this->permanent_url = $url;

        $this->useragent = $useragent;

        if (preg_match('/^http(s)?:\/\//i', $url)) {

            if ($useragent === null) {

                $useragent = ini_get('user_agent');

                $this->useragent = $useragent;

            }

            if (!is_array($headers)) {

                $headers = [];

            }

            if (!$force_fsockopen && function_exists('curl_exec')) {

                $this->method = \SimplePie\SimplePie::FILE_SOURCE_REMOTE | \SimplePie\SimplePie::FILE_SOURCE_CURL;

                $fp = curl_init();

                $headers2 = [];

                foreach ($headers as $key => $value) {

                    $headers2[] = "$key: $value";

                }

                if (version_compare(\SimplePie\Misc::get_curl_version(), '7.10.5', '>=')) {

                    curl_setopt($fp, CURLOPT_ENCODING, '');

                }

                curl_setopt($fp, CURLOPT_URL, $url);

                curl_setopt($fp, CURLOPT_HEADER, 1);

                curl_setopt($fp, CURLOPT_RETURNTRANSFER, 1);

                curl_setopt($fp, CURLOPT_FAILONERROR, 1);

                curl_setopt($fp, CURLOPT_TIMEOUT, $timeout);

                curl_setopt($fp, CURLOPT_CONNECTTIMEOUT, $timeout);

                curl_setopt($fp, CURLOPT_REFERER, \SimplePie\Misc::url_remove_credentials($url));

                curl_setopt($fp, CURLOPT_USERAGENT, $useragent);

                curl_setopt($fp, CURLOPT_HTTPHEADER, $headers2);

                foreach ($curl_options as $curl_param => $curl_value) {

                    curl_setopt($fp, $curl_param, $curl_value);

                }

                $this->headers = curl_exec($fp);

                if (curl_errno($fp) === 23 || curl_errno($fp) === 61) {

                    curl_setopt($fp, CURLOPT_ENCODING, 'none');

                    $this->headers = curl_exec($fp);

                }

                $this->status_code = curl_getinfo($fp, CURLINFO_HTTP_CODE);

                if (curl_errno($fp)) {

                    $this->error = 'cURL error ' . curl_errno($fp) . ': ' . curl_error($fp);

                    $this->success = false;

                } else {

                    // Use the updated url provided by curl_getinfo after any redirects.

                    if ($info = curl_getinfo($fp)) {

                        $this->url = $info['url'];

                    }

                    curl_close($fp);

                    $this->headers = \SimplePie\HTTP\Parser::prepareHeaders($this->headers, $info['redirect_count'] + 1);

                    $parser = new \SimplePie\HTTP\Parser($this->headers);

                    if ($parser->parse()) {

                        $this->headers = $parser->headers;

                        $this->body = trim($parser->body);

                        $this->status_code = $parser->status_code;

                        if ((in_array($this->status_code, [300, 301, 302, 303, 307]) || $this->status_code > 307 && $this->status_code < 400) && isset($this->headers['location']) && $this->redirects < $redirects) {

                            $this->redirects++;

                            $location = \SimplePie\Misc::absolutize_url($this->headers['location'], $url);

                            $previousStatusCode = $this->status_code;

                            $this->__construct($location, $timeout, $redirects, $headers, $useragent, $force_fsockopen, $curl_options);

                            $this->permanent_url = ($previousStatusCode == 301) ? $location : $url;

                            return;

                        }

                    }

                }

            } else {

                $this->method = \SimplePie\SimplePie::FILE_SOURCE_REMOTE | \SimplePie\SimplePie::FILE_SOURCE_FSOCKOPEN;

                $url_parts = parse_url($url);

                $socket_host = $url_parts['host'];

                if (isset($url_parts['scheme']) && strtolower($url_parts['scheme']) === 'https') {

                    $socket_host = "ssl://$url_parts[host]";

                    $url_parts['port'] = 443;

                }

                if (!isset($url_parts['port'])) {

                    $url_parts['port'] = 80;

                }

                $fp = @fsockopen($socket_host, $url_parts['port'], $errno, $errstr, $timeout);

                if (!$fp) {

                    $this->error = 'fsockopen error: ' . $errstr;

                    $this->success = false;

                } else {

                    stream_set_timeout($fp, $timeout);

                    if (isset($url_parts['path'])) {

                        if (isset($url_parts['query'])) {

                            $get = "$url_parts[path]?$url_parts[query]";

                        } else {

                            $get = $url_parts['path'];

                        }

                    } else {

                        $get = '/';

                    }

                    $out = "GET $get HTTP/1.1\r\n";

                    $out .= "Host: $url_parts[host]\r\n";

                    $out .= "User-Agent: $useragent\r\n";

                    if (extension_loaded('zlib')) {

                        $out .= "Accept-Encoding: x-gzip,gzip,deflate\r\n";

                    }

                    if (isset($url_parts['user']) && isset($url_parts['pass'])) {

                        $out .= "Authorization: Basic " . base64_encode("$url_parts[user]:$url_parts[pass]") . "\r\n";

                    }

                    foreach ($headers as $key => $value) {

                        $out .= "$key: $value\r\n";

                    }

                    $out .= "Connection: Close\r\n\r\n";

                    fwrite($fp, $out);

                    $info = stream_get_meta_data($fp);

                    $this->headers = '';

                    while (!$info['eof'] && !$info['timed_out']) {

                        $this->headers .= fread($fp, 1160);

                        $info = stream_get_meta_data($fp);

                    }

                    if (!$info['timed_out']) {

                        $parser = new \SimplePie\HTTP\Parser($this->headers);

                        if ($parser->parse()) {

                            $this->headers = $parser->headers;

                            $this->body = $parser->body;

                            $this->status_code = $parser->status_code;

                            if ((in_array($this->status_code, [300, 301, 302, 303, 307]) || $this->status_code > 307 && $this->status_code < 400) && isset($this->headers['location']) && $this->redirects < $redirects) {

                                $this->redirects++;

                                $location = \SimplePie\Misc::absolutize_url($this->headers['location'], $url);

                                $previousStatusCode = $this->status_code;

                                $this->__construct($location, $timeout, $redirects, $headers, $useragent, $force_fsockopen, $curl_options);

                                $this->permanent_url = ($previousStatusCode == 301) ? $location : $url;

                                return;

                            }

                            if (isset($this->headers['content-encoding'])) {

                                // Hey, we act dumb elsewhere, so let's do that here too

                                switch (strtolower(trim($this->headers['content-encoding'], "\x09\x0A\x0D\x20"))) {

                                    case 'gzip':

                                    case 'x-gzip':

                                        $decoder = new \SimplePie\Gzdecode($this->body);

                                        if (!$decoder->parse()) {

                                            $this->error = 'Unable to decode HTTP "gzip" stream';

                                            $this->success = false;

                                        } else {

                                            $this->body = trim($decoder->data);

                                        }

                                        break;

                                    case 'deflate':

                                        if (($decompressed = gzinflate($this->body)) !== false) {

                                            $this->body = $decompressed;

                                        } elseif (($decompressed = gzuncompress($this->body)) !== false) {

                                            $this->body = $decompressed;

                                        } elseif (function_exists('gzdecode') && ($decompressed = gzdecode($this->body)) !== false) {

                                            $this->body = $decompressed;

                                        } else {

                                            $this->error = 'Unable to decode HTTP "deflate" stream';

                                            $this->success = false;

                                        }

                                        break;

                                    default:

                                        $this->error = 'Unknown content coding';

                                        $this->success = false;

                                }

                            }

                        }

                    } else {

                        $this->error = 'fsocket timed out';

                        $this->success = false;

                    }

                    fclose($fp);

                }

            }

        } else {

            $this->method = \SimplePie\SimplePie::FILE_SOURCE_LOCAL | \SimplePie\SimplePie::FILE_SOURCE_FILE_GET_CONTENTS;

            if (empty($url) || !($this->body = trim(file_get_contents($url)))) {

                $this->error = 'file_get_contents could not read the file';

                $this->success = false;

            }

        }

    }

}

class_alias('SimplePie\File', 'SimplePie_File');