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<?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');