70a781fa5a
When Curl tries to fetch the rewrite test URL and something goes wrong the user has no clue what was the problem. This problems can include: - The rewriting not working at all. - HTTPS redirects do not work. - Curl does not accept the presented SSL cert. This commit fixes this by providing the Curl error message to the user to further debug the problem. Fixes #3629.~
889 lines
23 KiB
PHP
889 lines
23 KiB
PHP
<?php
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/**
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* @file src/Util/Network.php
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*/
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namespace Friendica\Util;
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use Friendica\App;
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use Friendica\Core\Addon;
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use Friendica\Core\L10n;
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use Friendica\Core\System;
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use Friendica\Core\Config;
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use Friendica\Network\Probe;
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use Friendica\Object\Image;
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use Friendica\Util\XML;
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use DOMDocument;
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use DomXPath;
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class Network
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{
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/**
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* @brief Curl wrapper
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*
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* If binary flag is true, return binary results.
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* Set the cookiejar argument to a string (e.g. "/tmp/friendica-cookies.txt")
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* to preserve cookies from one request to the next.
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*
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* @param string $url URL to fetch
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* @param boolean $binary default false
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* TRUE if asked to return binary results (file download)
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* @param integer $redirects The recursion counter for internal use - default 0
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* @param integer $timeout Timeout in seconds, default system config value or 60 seconds
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* @param string $accept_content supply Accept: header with 'accept_content' as the value
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* @param string $cookiejar Path to cookie jar file
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*
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* @return string The fetched content
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*/
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public static function fetchUrl($url, $binary = false, &$redirects = 0, $timeout = 0, $accept_content = null, $cookiejar = 0)
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{
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$ret = fetchUrlFull($url, $binary, $redirects, $timeout, $accept_content, $cookiejar);
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return($ret['body']);
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}
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public static function fetchUrlFull($url, $binary = false, &$redirects = 0, $timeout = 0, $accept_content = null, $cookiejar = 0)
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{
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return self::curl(
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$url,
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$binary,
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$redirects,
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['timeout'=>$timeout,
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'accept_content'=>$accept_content,
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'cookiejar'=>$cookiejar
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]
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);
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}
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/**
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* @brief fetches an URL.
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*
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* @param string $url URL to fetch
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* @param boolean $binary default false
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* TRUE if asked to return binary results (file download)
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* @param int $redirects The recursion counter for internal use - default 0
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* @param array $opts (optional parameters) assoziative array with:
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* 'accept_content' => supply Accept: header with 'accept_content' as the value
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* 'timeout' => int Timeout in seconds, default system config value or 60 seconds
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* 'http_auth' => username:password
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* 'novalidate' => do not validate SSL certs, default is to validate using our CA list
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* 'nobody' => only return the header
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* 'cookiejar' => path to cookie jar file
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*
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* @return array an assoziative array with:
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* int 'return_code' => HTTP return code or 0 if timeout or failure
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* boolean 'success' => boolean true (if HTTP 2xx result) or false
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* string 'redirect_url' => in case of redirect, content was finally retrieved from this URL
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* string 'header' => HTTP headers
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* string 'body' => fetched content
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*/
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public static function curl($url, $binary = false, &$redirects = 0, $opts = [])
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{
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$ret = ['return_code' => 0, 'success' => false, 'header' => '', 'info' => '', 'body' => ''];
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$stamp1 = microtime(true);
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$a = get_app();
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$parts = parse_url($url);
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$path_parts = explode('/', $parts['path']);
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foreach ($path_parts as $part) {
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if (strlen($part) <> mb_strlen($part)) {
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$parts2[] = rawurlencode($part);
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} else {
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$parts2[] = $part;
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}
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}
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$parts['path'] = implode('/', $parts2);
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$url = self::unparseURL($parts);
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if (self::isUrlBlocked($url)) {
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logger('domain of ' . $url . ' is blocked', LOGGER_DATA);
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return $ret;
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}
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$ch = @curl_init($url);
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if (($redirects > 8) || (!$ch)) {
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return $ret;
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}
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@curl_setopt($ch, CURLOPT_HEADER, true);
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if (x($opts, "cookiejar")) {
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curl_setopt($ch, CURLOPT_COOKIEJAR, $opts["cookiejar"]);
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curl_setopt($ch, CURLOPT_COOKIEFILE, $opts["cookiejar"]);
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}
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// These settings aren't needed. We're following the location already.
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// @curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
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// @curl_setopt($ch, CURLOPT_MAXREDIRS, 5);
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if (x($opts, 'accept_content')) {
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curl_setopt(
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$ch,
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CURLOPT_HTTPHEADER,
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['Accept: ' . $opts['accept_content']]
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);
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}
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@curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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@curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent());
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$range = intval(Config::get('system', 'curl_range_bytes', 0));
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if ($range > 0) {
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@curl_setopt($ch, CURLOPT_RANGE, '0-' . $range);
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}
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// Without this setting it seems as if some webservers send compressed content
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// This seems to confuse curl so that it shows this uncompressed.
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/// @todo We could possibly set this value to "gzip" or something similar
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curl_setopt($ch, CURLOPT_ENCODING, '');
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if (x($opts, 'headers')) {
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@curl_setopt($ch, CURLOPT_HTTPHEADER, $opts['headers']);
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}
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if (x($opts, 'nobody')) {
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@curl_setopt($ch, CURLOPT_NOBODY, $opts['nobody']);
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}
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if (x($opts, 'timeout')) {
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@curl_setopt($ch, CURLOPT_TIMEOUT, $opts['timeout']);
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} else {
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$curl_time = Config::get('system', 'curl_timeout', 60);
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@curl_setopt($ch, CURLOPT_TIMEOUT, intval($curl_time));
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}
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// by default we will allow self-signed certs
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// but you can override this
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$check_cert = Config::get('system', 'verifyssl');
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@curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, (($check_cert) ? true : false));
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if ($check_cert) {
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@curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
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}
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$proxy = Config::get('system', 'proxy');
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if (strlen($proxy)) {
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@curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1);
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@curl_setopt($ch, CURLOPT_PROXY, $proxy);
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$proxyuser = @Config::get('system', 'proxyuser');
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if (strlen($proxyuser)) {
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@curl_setopt($ch, CURLOPT_PROXYUSERPWD, $proxyuser);
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}
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}
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if (Config::get('system', 'ipv4_resolve', false)) {
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curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
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}
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if ($binary) {
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@curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
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}
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$a->set_curl_code(0);
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// don't let curl abort the entire application
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// if it throws any errors.
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$s = @curl_exec($ch);
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$curl_info = @curl_getinfo($ch);
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// Special treatment for HTTP Code 416
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// See https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/416
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if (($curl_info['http_code'] == 416) && ($range > 0)) {
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@curl_setopt($ch, CURLOPT_RANGE, '');
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$s = @curl_exec($ch);
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$curl_info = @curl_getinfo($ch);
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}
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if (curl_errno($ch) !== CURLE_OK) {
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logger('error fetching ' . $url . ': ' . curl_error($ch), LOGGER_NORMAL);
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}
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$ret['errno'] = curl_errno($ch);
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$base = $s;
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$ret['info'] = $curl_info;
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$http_code = $curl_info['http_code'];
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logger($url . ': ' . $http_code . " " . $s, LOGGER_DATA);
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$header = '';
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// Pull out multiple headers, e.g. proxy and continuation headers
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// allow for HTTP/2.x without fixing code
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while (preg_match('/^HTTP\/[1-2].+? [1-5][0-9][0-9]/', $base)) {
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$chunk = substr($base, 0, strpos($base, "\r\n\r\n") + 4);
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$header .= $chunk;
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$base = substr($base, strlen($chunk));
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}
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$a->set_curl_code($http_code);
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$a->set_curl_content_type($curl_info['content_type']);
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$a->set_curl_headers($header);
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if ($http_code == 301 || $http_code == 302 || $http_code == 303 || $http_code == 307) {
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$new_location_info = @parse_url($curl_info['redirect_url']);
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$old_location_info = @parse_url($curl_info['url']);
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$newurl = $curl_info['redirect_url'];
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if (($new_location_info['path'] == '') && ($new_location_info['host'] != '')) {
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$newurl = $new_location_info['scheme'] . '://' . $new_location_info['host'] . $old_location_info['path'];
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}
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$matches = [];
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if (preg_match('/(Location:|URI:)(.*?)\n/i', $header, $matches)) {
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$newurl = trim(array_pop($matches));
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}
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if (strpos($newurl, '/') === 0) {
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$newurl = $old_location_info["scheme"]."://".$old_location_info["host"].$newurl;
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}
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$old_location_query = @parse_url($url, PHP_URL_QUERY);
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if ($old_location_query != '') {
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$newurl .= '?' . $old_location_query;
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}
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if (filter_var($newurl, FILTER_VALIDATE_URL)) {
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$redirects++;
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@curl_close($ch);
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return self::curl($newurl, $binary, $redirects, $opts);
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}
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}
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$a->set_curl_code($http_code);
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$a->set_curl_content_type($curl_info['content_type']);
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$rc = intval($http_code);
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$ret['return_code'] = $rc;
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$ret['success'] = (($rc >= 200 && $rc <= 299) ? true : false);
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$ret['redirect_url'] = $url;
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if (!$ret['success']) {
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$ret['error'] = curl_error($ch);
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$ret['debug'] = $curl_info;
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logger('error: '.$url.': '.$ret['return_code'].' - '.$ret['error'], LOGGER_DEBUG);
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logger('debug: '.print_r($curl_info, true), LOGGER_DATA);
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}
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$ret['body'] = substr($s, strlen($header));
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$ret['header'] = $header;
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if (x($opts, 'debug')) {
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$ret['debug'] = $curl_info;
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}
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@curl_close($ch);
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$a->save_timestamp($stamp1, 'network');
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return($ret);
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}
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/**
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* @brief Send POST request to $url
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*
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* @param string $url URL to post
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* @param mixed $params array of POST variables
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* @param string $headers HTTP headers
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* @param integer $redirects Recursion counter for internal use - default = 0
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* @param integer $timeout The timeout in seconds, default system config value or 60 seconds
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*
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* @return string The content
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*/
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public static function post($url, $params, $headers = null, &$redirects = 0, $timeout = 0)
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{
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$stamp1 = microtime(true);
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if (self::isUrlBlocked($url)) {
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logger('post_url: domain of ' . $url . ' is blocked', LOGGER_DATA);
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return false;
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}
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$a = get_app();
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$ch = curl_init($url);
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if (($redirects > 8) || (!$ch)) {
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return false;
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}
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logger('post_url: start ' . $url, LOGGER_DATA);
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curl_setopt($ch, CURLOPT_HEADER, true);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($ch, CURLOPT_POST, 1);
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curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
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curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent());
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if (Config::get('system', 'ipv4_resolve', false)) {
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curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
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}
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if (intval($timeout)) {
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curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
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} else {
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$curl_time = Config::get('system', 'curl_timeout', 60);
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curl_setopt($ch, CURLOPT_TIMEOUT, intval($curl_time));
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}
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if (defined('LIGHTTPD')) {
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if (!is_array($headers)) {
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$headers = ['Expect:'];
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} else {
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if (!in_array('Expect:', $headers)) {
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array_push($headers, 'Expect:');
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}
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}
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}
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if ($headers) {
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curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
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}
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$check_cert = Config::get('system', 'verifyssl');
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curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, (($check_cert) ? true : false));
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if ($check_cert) {
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@curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
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}
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$proxy = Config::get('system', 'proxy');
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if (strlen($proxy)) {
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curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1);
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curl_setopt($ch, CURLOPT_PROXY, $proxy);
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$proxyuser = Config::get('system', 'proxyuser');
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if (strlen($proxyuser)) {
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curl_setopt($ch, CURLOPT_PROXYUSERPWD, $proxyuser);
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}
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}
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$a->set_curl_code(0);
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// don't let curl abort the entire application
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// if it throws any errors.
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$s = @curl_exec($ch);
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$base = $s;
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$curl_info = curl_getinfo($ch);
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$http_code = $curl_info['http_code'];
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logger('post_url: result ' . $http_code . ' - ' . $url, LOGGER_DATA);
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$header = '';
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// Pull out multiple headers, e.g. proxy and continuation headers
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// allow for HTTP/2.x without fixing code
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while (preg_match('/^HTTP\/[1-2].+? [1-5][0-9][0-9]/', $base)) {
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$chunk = substr($base, 0, strpos($base, "\r\n\r\n") + 4);
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$header .= $chunk;
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$base = substr($base, strlen($chunk));
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}
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if ($http_code == 301 || $http_code == 302 || $http_code == 303 || $http_code == 307) {
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$matches = [];
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$new_location_info = @parse_url($curl_info['redirect_url']);
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$old_location_info = @parse_url($curl_info['url']);
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preg_match('/(Location:|URI:)(.*?)\n/', $header, $matches);
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$newurl = trim(array_pop($matches));
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if (strpos($newurl, '/') === 0) {
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$newurl = $old_location_info["scheme"] . "://" . $old_location_info["host"] . $newurl;
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}
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if (filter_var($newurl, FILTER_VALIDATE_URL)) {
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$redirects++;
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logger('post_url: redirect ' . $url . ' to ' . $newurl);
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return self::post($newurl, $params, $headers, $redirects, $timeout);
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}
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}
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$a->set_curl_code($http_code);
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$body = substr($s, strlen($header));
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$a->set_curl_headers($header);
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curl_close($ch);
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$a->save_timestamp($stamp1, 'network');
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logger('post_url: end ' . $url, LOGGER_DATA);
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return $body;
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}
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/**
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* @brief Check URL to see if it's real
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*
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* Take a URL from the wild, prepend http:// if necessary
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* and check DNS to see if it's real (or check if is a valid IP address)
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*
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* @param string $url The URL to be validated
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* @return string|boolean The actual working URL, false else
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*/
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public static function isUrlValid($url)
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{
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if (Config::get('system', 'disable_url_validation')) {
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return $url;
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}
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// no naked subdomains (allow localhost for tests)
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if (strpos($url, '.') === false && strpos($url, '/localhost/') === false) {
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return false;
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}
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if (substr($url, 0, 4) != 'http') {
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$url = 'http://' . $url;
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}
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/// @TODO Really suppress function outcomes? Why not find them + debug them?
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$h = @parse_url($url);
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if ((is_array($h)) && (@dns_get_record($h['host'], DNS_A + DNS_CNAME) || filter_var($h['host'], FILTER_VALIDATE_IP) )) {
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return $url;
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}
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return false;
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}
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/**
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* @brief Checks that email is an actual resolvable internet address
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*
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* @param string $addr The email address
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* @return boolean True if it's a valid email address, false if it's not
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*/
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public static function isEmailDomainValid($addr)
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{
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if (Config::get('system', 'disable_email_validation')) {
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return true;
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}
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if (! strpos($addr, '@')) {
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return false;
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}
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$h = substr($addr, strpos($addr, '@') + 1);
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if (($h) && (dns_get_record($h, DNS_A + DNS_CNAME + DNS_MX) || filter_var($h, FILTER_VALIDATE_IP) )) {
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return true;
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}
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return false;
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}
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/**
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* @brief Check if URL is allowed
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*
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* Check $url against our list of allowed sites,
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* wildcards allowed. If allowed_sites is unset return true;
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*
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* @param string $url URL which get tested
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* @return boolean True if url is allowed otherwise return false
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*/
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public static function isUrlAllowed($url)
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{
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$h = @parse_url($url);
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if (! $h) {
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return false;
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}
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|
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$str_allowed = Config::get('system', 'allowed_sites');
|
|
if (! $str_allowed) {
|
|
return true;
|
|
}
|
|
|
|
$found = false;
|
|
|
|
$host = strtolower($h['host']);
|
|
|
|
// always allow our own site
|
|
if ($host == strtolower($_SERVER['SERVER_NAME'])) {
|
|
return true;
|
|
}
|
|
|
|
$fnmatch = function_exists('fnmatch');
|
|
$allowed = explode(',', $str_allowed);
|
|
|
|
if (count($allowed)) {
|
|
foreach ($allowed as $a) {
|
|
$pat = strtolower(trim($a));
|
|
if (($fnmatch && fnmatch($pat, $host)) || ($pat == $host)) {
|
|
$found = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return $found;
|
|
}
|
|
|
|
/**
|
|
* Checks if the provided url domain is on the domain blocklist.
|
|
* Returns true if it is or malformed URL, false if not.
|
|
*
|
|
* @param string $url The url to check the domain from
|
|
*
|
|
* @return boolean
|
|
*/
|
|
public static function isUrlBlocked($url)
|
|
{
|
|
$h = @parse_url($url);
|
|
|
|
if (! $h) {
|
|
return true;
|
|
}
|
|
|
|
$domain_blocklist = Config::get('system', 'blocklist', []);
|
|
if (! $domain_blocklist) {
|
|
return false;
|
|
}
|
|
|
|
$host = strtolower($h['host']);
|
|
|
|
foreach ($domain_blocklist as $domain_block) {
|
|
if (strtolower($domain_block['domain']) == $host) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @brief Check if email address is allowed to register here.
|
|
*
|
|
* Compare against our list (wildcards allowed).
|
|
*
|
|
* @param string $email email address
|
|
* @return boolean False if not allowed, true if allowed
|
|
* or if allowed list is not configured
|
|
*/
|
|
public static function isEmailDomainAllowed($email)
|
|
{
|
|
$domain = strtolower(substr($email, strpos($email, '@') + 1));
|
|
if (!$domain) {
|
|
return false;
|
|
}
|
|
|
|
$str_allowed = Config::get('system', 'allowed_email', '');
|
|
if (!x($str_allowed)) {
|
|
return true;
|
|
}
|
|
|
|
$allowed = explode(',', $str_allowed);
|
|
|
|
return self::isDomainAllowed($domain, $allowed);
|
|
}
|
|
|
|
/**
|
|
* Checks for the existence of a domain in a domain list
|
|
*
|
|
* @brief Checks for the existence of a domain in a domain list
|
|
* @param string $domain
|
|
* @param array $domain_list
|
|
* @return boolean
|
|
*/
|
|
public static function isDomainAllowed($domain, array $domain_list)
|
|
{
|
|
$found = false;
|
|
|
|
foreach ($domain_list as $item) {
|
|
$pat = strtolower(trim($item));
|
|
if (fnmatch($pat, $domain) || ($pat == $domain)) {
|
|
$found = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return $found;
|
|
}
|
|
|
|
public static function lookupAvatarByEmail($email)
|
|
{
|
|
$avatar['size'] = 175;
|
|
$avatar['email'] = $email;
|
|
$avatar['url'] = '';
|
|
$avatar['success'] = false;
|
|
|
|
Addon::callHooks('avatar_lookup', $avatar);
|
|
|
|
if (! $avatar['success']) {
|
|
$avatar['url'] = System::baseUrl() . '/images/person-175.jpg';
|
|
}
|
|
|
|
logger('Avatar: ' . $avatar['email'] . ' ' . $avatar['url'], LOGGER_DEBUG);
|
|
return $avatar['url'];
|
|
}
|
|
|
|
/**
|
|
* @brief Remove Google Analytics and other tracking platforms params from URL
|
|
*
|
|
* @param string $url Any user-submitted URL that may contain tracking params
|
|
* @return string The same URL stripped of tracking parameters
|
|
*/
|
|
public static function stripTrackingQueryParams($url)
|
|
{
|
|
$urldata = parse_url($url);
|
|
if (is_string($urldata["query"])) {
|
|
$query = $urldata["query"];
|
|
parse_str($query, $querydata);
|
|
|
|
if (is_array($querydata)) {
|
|
foreach ($querydata as $param => $value) {
|
|
if (in_array(
|
|
$param,
|
|
[
|
|
"utm_source", "utm_medium", "utm_term", "utm_content", "utm_campaign",
|
|
"wt_mc", "pk_campaign", "pk_kwd", "mc_cid", "mc_eid",
|
|
"fb_action_ids", "fb_action_types", "fb_ref",
|
|
"awesm", "wtrid",
|
|
"woo_campaign", "woo_source", "woo_medium", "woo_content", "woo_term"]
|
|
)
|
|
) {
|
|
$pair = $param . "=" . urlencode($value);
|
|
$url = str_replace($pair, "", $url);
|
|
|
|
// Second try: if the url isn't encoded completely
|
|
$pair = $param . "=" . str_replace(" ", "+", $value);
|
|
$url = str_replace($pair, "", $url);
|
|
|
|
// Third try: Maybey the url isn't encoded at all
|
|
$pair = $param . "=" . $value;
|
|
$url = str_replace($pair, "", $url);
|
|
|
|
$url = str_replace(["?&", "&&"], ["?", ""], $url);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (substr($url, -1, 1) == "?") {
|
|
$url = substr($url, 0, -1);
|
|
}
|
|
}
|
|
|
|
return $url;
|
|
}
|
|
|
|
/**
|
|
* @brief Returns the original URL of the provided URL
|
|
*
|
|
* This function strips tracking query params and follows redirections, either
|
|
* through HTTP code or meta refresh tags. Stops after 10 redirections.
|
|
*
|
|
* @todo Remove the $fetchbody parameter that generates an extraneous HEAD request
|
|
*
|
|
* @see ParseUrl::getSiteinfo
|
|
*
|
|
* @param string $url A user-submitted URL
|
|
* @param int $depth The current redirection recursion level (internal)
|
|
* @param bool $fetchbody Wether to fetch the body or not after the HEAD requests
|
|
* @return string A canonical URL
|
|
*/
|
|
public static function finalUrl($url, $depth = 1, $fetchbody = false)
|
|
{
|
|
$a = get_app();
|
|
|
|
$url = self::stripTrackingQueryParams($url);
|
|
|
|
if ($depth > 10) {
|
|
return($url);
|
|
}
|
|
|
|
$url = trim($url, "'");
|
|
|
|
$stamp1 = microtime(true);
|
|
|
|
$ch = curl_init();
|
|
curl_setopt($ch, CURLOPT_URL, $url);
|
|
curl_setopt($ch, CURLOPT_HEADER, 1);
|
|
curl_setopt($ch, CURLOPT_NOBODY, 1);
|
|
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
|
|
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
|
|
curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent());
|
|
|
|
curl_exec($ch);
|
|
$curl_info = @curl_getinfo($ch);
|
|
$http_code = $curl_info['http_code'];
|
|
curl_close($ch);
|
|
|
|
$a->save_timestamp($stamp1, "network");
|
|
|
|
if ($http_code == 0) {
|
|
return($url);
|
|
}
|
|
|
|
if ((($curl_info['http_code'] == "301") || ($curl_info['http_code'] == "302"))
|
|
&& (($curl_info['redirect_url'] != "") || ($curl_info['location'] != ""))
|
|
) {
|
|
if ($curl_info['redirect_url'] != "") {
|
|
return(self::finalUrl($curl_info['redirect_url'], ++$depth, $fetchbody));
|
|
} else {
|
|
return(self::finalUrl($curl_info['location'], ++$depth, $fetchbody));
|
|
}
|
|
}
|
|
|
|
// Check for redirects in the meta elements of the body if there are no redirects in the header.
|
|
if (!$fetchbody) {
|
|
return(self::finalUrl($url, ++$depth, true));
|
|
}
|
|
|
|
// if the file is too large then exit
|
|
if ($curl_info["download_content_length"] > 1000000) {
|
|
return($url);
|
|
}
|
|
|
|
// if it isn't a HTML file then exit
|
|
if (($curl_info["content_type"] != "") && !strstr(strtolower($curl_info["content_type"]), "html")) {
|
|
return($url);
|
|
}
|
|
|
|
$stamp1 = microtime(true);
|
|
|
|
$ch = curl_init();
|
|
curl_setopt($ch, CURLOPT_URL, $url);
|
|
curl_setopt($ch, CURLOPT_HEADER, 0);
|
|
curl_setopt($ch, CURLOPT_NOBODY, 0);
|
|
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
|
|
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
|
|
curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent());
|
|
|
|
$body = curl_exec($ch);
|
|
curl_close($ch);
|
|
|
|
$a->save_timestamp($stamp1, "network");
|
|
|
|
if (trim($body) == "") {
|
|
return($url);
|
|
}
|
|
|
|
// Check for redirect in meta elements
|
|
$doc = new DOMDocument();
|
|
@$doc->loadHTML($body);
|
|
|
|
$xpath = new DomXPath($doc);
|
|
|
|
$list = $xpath->query("//meta[@content]");
|
|
foreach ($list as $node) {
|
|
$attr = [];
|
|
if ($node->attributes->length) {
|
|
foreach ($node->attributes as $attribute) {
|
|
$attr[$attribute->name] = $attribute->value;
|
|
}
|
|
}
|
|
|
|
if (@$attr["http-equiv"] == 'refresh') {
|
|
$path = $attr["content"];
|
|
$pathinfo = explode(";", $path);
|
|
foreach ($pathinfo as $value) {
|
|
if (substr(strtolower($value), 0, 4) == "url=") {
|
|
return(self::finalUrl(substr($value, 4), ++$depth));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return $url;
|
|
}
|
|
|
|
/**
|
|
* @brief Find the matching part between two url
|
|
*
|
|
* @param string $url1
|
|
* @param string $url2
|
|
* @return string The matching part
|
|
*/
|
|
public static function getUrlMatch($url1, $url2)
|
|
{
|
|
if (($url1 == "") || ($url2 == "")) {
|
|
return "";
|
|
}
|
|
|
|
$url1 = normalise_link($url1);
|
|
$url2 = normalise_link($url2);
|
|
|
|
$parts1 = parse_url($url1);
|
|
$parts2 = parse_url($url2);
|
|
|
|
if (!isset($parts1["host"]) || !isset($parts2["host"])) {
|
|
return "";
|
|
}
|
|
|
|
if ($parts1["scheme"] != $parts2["scheme"]) {
|
|
return "";
|
|
}
|
|
|
|
if ($parts1["host"] != $parts2["host"]) {
|
|
return "";
|
|
}
|
|
|
|
if ($parts1["port"] != $parts2["port"]) {
|
|
return "";
|
|
}
|
|
|
|
$match = $parts1["scheme"]."://".$parts1["host"];
|
|
|
|
if ($parts1["port"]) {
|
|
$match .= ":".$parts1["port"];
|
|
}
|
|
|
|
$pathparts1 = explode("/", $parts1["path"]);
|
|
$pathparts2 = explode("/", $parts2["path"]);
|
|
|
|
$i = 0;
|
|
$path = "";
|
|
do {
|
|
$path1 = $pathparts1[$i];
|
|
$path2 = $pathparts2[$i];
|
|
|
|
if ($path1 == $path2) {
|
|
$path .= $path1."/";
|
|
}
|
|
} while (($path1 == $path2) && ($i++ <= count($pathparts1)));
|
|
|
|
$match .= $path;
|
|
|
|
return normalise_link($match);
|
|
}
|
|
|
|
/**
|
|
* @brief Glue url parts together
|
|
*
|
|
* @param array $parsed URL parts
|
|
*
|
|
* @return string The glued URL
|
|
*/
|
|
public static function unparseURL($parsed)
|
|
{
|
|
$get = function ($key) use ($parsed) {
|
|
return isset($parsed[$key]) ? $parsed[$key] : null;
|
|
};
|
|
|
|
$pass = $get('pass');
|
|
$user = $get('user');
|
|
$userinfo = $pass !== null ? "$user:$pass" : $user;
|
|
$port = $get('port');
|
|
$scheme = $get('scheme');
|
|
$query = $get('query');
|
|
$fragment = $get('fragment');
|
|
$authority = ($userinfo !== null ? $userinfo."@" : '') .
|
|
$get('host') .
|
|
($port ? ":$port" : '');
|
|
|
|
return (strlen($scheme) ? $scheme.":" : '') .
|
|
(strlen($authority) ? "//".$authority : '') .
|
|
$get('path') .
|
|
(strlen($query) ? "?".$query : '') .
|
|
(strlen($fragment) ? "#".$fragment : '');
|
|
}
|
|
}
|