Merge pull request #8957 from annando/server-peers

[friendica.git] / src / Util / Network.php

diff --git a/src/Util/Network.php b/src/Util/Network.php
index 888dc20a692e386946ea8b3ee87693570e2069df..7795b0cd29d980753771a2f76b45b315b4972f7f 100644 (file)
--- a/src/Util/Network.php
+++ b/src/Util/Network.php
@@ -21,11 +21,8 @@
 
 namespace Friendica\Util;
 
-use DOMDocument;
-use DomXPath;
 use Friendica\Core\Hook;
 use Friendica\Core\Logger;
-use Friendica\Core\System;
 use Friendica\DI;
 
 class Network
@@ -314,126 +311,6 @@ class Network
                return self::unparseURL($parts);
        }
 
-       /**
-        * 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
-        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
-        */
-       public static function finalUrl(string $url, int $depth = 1, bool $fetchbody = false)
-       {
-               $a = DI::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, $a->getUserAgent());
-
-               curl_exec($ch);
-               $curl_info = @curl_getinfo($ch);
-               $http_code = $curl_info['http_code'];
-               curl_close($ch);
-
-               DI::profiler()->saveTimestamp($stamp1, "network", System::callstack());
-
-               if ($http_code == 0) {
-                       return $url;
-               }
-
-               if (in_array($http_code, ['301', '302'])) {
-                       if (!empty($curl_info['redirect_url'])) {
-                               return self::finalUrl($curl_info['redirect_url'], ++$depth, $fetchbody);
-                       } elseif (!empty($curl_info['location'])) {
-                               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 $url;
-               }
-
-               // if it isn't a HTML file then exit
-               if (!empty($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->getUserAgent());
-
-               $body = curl_exec($ch);
-               curl_close($ch);
-
-               DI::profiler()->saveTimestamp($stamp1, "network", System::callstack());
-
-               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;
-       }
-
        /**
         * Find the matching part between two url
         *