<?php
/**
- * @file src/Network/Probe.php
+ * @copyright Copyright (C) 2020, Friendica
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
*/
-namespace Friendica\Network;
-/**
- * @file src/Network/Probe.php
- * @brief Functions for probing URL
- */
+namespace Friendica\Network;
use DOMDocument;
use DomXPath;
-use Friendica\Core\Cache;
-use Friendica\Core\Config;
+use Friendica\Core\Cache\Duration;
use Friendica\Core\Logger;
use Friendica\Core\Protocol;
use Friendica\Core\System;
use Friendica\Database\DBA;
+use Friendica\DI;
+use Friendica\Model\Contact;
+use Friendica\Model\GServer;
use Friendica\Model\Profile;
use Friendica\Protocol\ActivityNamespace;
use Friendica\Protocol\ActivityPub;
use Friendica\Util\XML;
/**
- * @brief This class contain functions for probing URL
- *
+ * This class contain functions for probing URL
*/
class Probe
{
private static $istimeout;
/**
- * @brief Rearrange the array so that it always has the same order
+ * Remove stuff from an URI that doesn't belong there
+ *
+ * @param string $URI
+ * @return string Cleaned URI
+ */
+ public static function cleanURI(string $URI)
+ {
+ // At first remove leading and trailing junk
+ $URI = trim($URI, "@#?:/ \t\n\r\0\x0B");
+
+ $parts = parse_url($URI);
+
+ if (empty($parts['scheme'])) {
+ return $URI;
+ }
+
+ // Remove the URL fragment, since these shouldn't be part of any profile URL
+ unset($parts['fragment']);
+
+ $URI = Network::unparseURL($parts);
+
+ return $URI;
+ }
+
+ /**
+ * Rearrange the array so that it always has the same order
*
* @param array $data Unordered data
*
private static function rearrangeData($data)
{
$fields = ["name", "nick", "guid", "url", "addr", "alias", "photo", "account-type",
- "community", "keywords", "location", "about", "gender", "hide",
+ "community", "keywords", "location", "about", "hide",
"batch", "notify", "poll", "request", "confirm", "poco",
"following", "followers", "inbox", "outbox", "sharedinbox",
- "priority", "network", "pubkey", "baseurl"];
+ "priority", "network", "pubkey", "baseurl", "gsid"];
$newdata = [];
foreach ($fields as $field) {
if (isset($data[$field])) {
$newdata[$field] = $data[$field];
- } else {
+ } elseif ($field != "gsid") {
$newdata[$field] = "";
+ } else {
+ $newdata[$field] = null;
}
}
}
/**
- * @brief Check if the hostname belongs to the own server
+ * Check if the hostname belongs to the own server
*
* @param string $host The hostname that is to be checked
*
*/
private static function ownHost($host)
{
- $own_host = \get_app()->getHostName();
+ $own_host = DI::baseUrl()->getHostname();
$parts = parse_url($host);
}
/**
- * @brief Probes for webfinger path via "host-meta"
+ * Probes for webfinger path via "host-meta"
*
* We have to check if the servers in the future still will offer this.
* It seems as if it was dropped from the standard.
// Reset the static variable
self::$baseurl = '';
- $ssl_url = "https://".$host."/.well-known/host-meta";
- $url = "http://".$host."/.well-known/host-meta";
+ // Handles the case when the hostname contains the scheme
+ if (!parse_url($host, PHP_URL_SCHEME)) {
+ $ssl_url = "https://" . $host . "/.well-known/host-meta";
+ $url = "http://" . $host . "/.well-known/host-meta";
+ } else {
+ $ssl_url = $host . "/.well-known/host-meta";
+ $url = '';
+ }
- $xrd_timeout = Config::get('system', 'xrd_timeout', 20);
+ $xrd_timeout = DI::config()->get('system', 'xrd_timeout', 20);
- Logger::log("Probing for ".$host, Logger::DEBUG);
+ Logger::info('Probing', ['host' => $host, 'ssl_url' => $ssl_url, 'url' => $url, 'callstack' => System::callstack(20)]);
$xrd = null;
$curlResult = Network::curl($ssl_url, false, ['timeout' => $xrd_timeout, 'accept_content' => 'application/xrd+xml']);
+ $ssl_connection_error = ($curlResult->getErrorNumber() == CURLE_COULDNT_CONNECT) || ($curlResult->getReturnCode() == 0);
if ($curlResult->isSuccess()) {
$xml = $curlResult->getBody();
- $xrd = XML::parseString($xml, false);
- $host_url = 'https://'.$host;
+ $xrd = XML::parseString($xml, true);
+ if (!empty($url)) {
+ $host_url = 'https://' . $host;
+ } else {
+ $host_url = $host;
+ }
+ } elseif ($curlResult->isTimeout()) {
+ Logger::info('Probing timeout', ['url' => $ssl_url], Logger::DEBUG);
+ self::$istimeout = true;
+ return false;
}
- if (!is_object($xrd)) {
+ if (!is_object($xrd) && !empty($url)) {
$curlResult = Network::curl($url, false, ['timeout' => $xrd_timeout, 'accept_content' => 'application/xrd+xml']);
+ $connection_error = ($curlResult->getErrorNumber() == CURLE_COULDNT_CONNECT) || ($curlResult->getReturnCode() == 0);
if ($curlResult->isTimeout()) {
- Logger::log("Probing timeout for " . $url, Logger::DEBUG);
+ Logger::info('Probing timeout', ['url' => $url], Logger::DEBUG);
+ self::$istimeout = true;
+ return false;
+ } elseif ($connection_error && $ssl_connection_error) {
self::$istimeout = true;
return false;
}
+
$xml = $curlResult->getBody();
- $xrd = XML::parseString($xml, false);
+ $xrd = XML::parseString($xml, true);
$host_url = 'http://'.$host;
}
if (!is_object($xrd)) {
return [];
}
- $lrdd = [];
- // The following webfinger path is defined in RFC 7033 https://tools.ietf.org/html/rfc7033
- // Problem is that Hubzilla currently doesn't provide all data in the JSON webfinger
- // compared to the XML webfinger. So this is commented out by now.
- // $lrdd = array("application/jrd+json" => $host_url.'/.well-known/webfinger?resource={uri}');
+ $lrdd = ['application/jrd+json' => $host_url . '/.well-known/webfinger?resource={uri}'];
foreach ($links["xrd"]["link"] as $value => $link) {
if (!empty($link["@attributes"])) {
}
/**
- * @brief Perform Webfinger lookup and return DFRN data
+ * Perform Webfinger lookup and return DFRN data
*
* Given an email style address, perform webfinger lookup and
* return the resulting DFRN profile URL, or if no DFRN profile URL
}
/**
- * @brief Check an URI for LRDD data
+ * Get the link for the remote follow page for a given profile link
*
- * this is a replacement for the "lrdd" function.
- * It isn't used in this class and has some redundancies in the code.
- * When time comes we can check the existing calls for "lrdd" if we can rework them.
+ * @param sting $profile
+ * @return string Remote follow page link
+ */
+ public static function getRemoteFollowLink(string $profile)
+ {
+ $follow_link = '';
+
+ $links = self::lrdd($profile);
+
+ if (!empty($links) && is_array($links)) {
+ foreach ($links as $link) {
+ if ($link['@attributes']['rel'] === ActivityNamespace::OSTATUSSUB) {
+ $follow_link = $link['@attributes']['template'];
+ }
+ }
+ }
+ return $follow_link;
+ }
+
+ /**
+ * Check an URI for LRDD data
*
* @param string $uri Address that should be probed
*
return [];
}
- $host = $parts["host"];
+ $host = $parts['scheme'] . '://' . $parts["host"];
if (!empty($parts["port"])) {
$host .= ':'.$parts["port"];
}
$data[] = ["@attributes" => $link];
}
- if (is_array($webfinger["aliases"])) {
+ if (!empty($webfinger["aliases"]) && is_array($webfinger["aliases"])) {
foreach ($webfinger["aliases"] as $alias) {
$data[] = ["@attributes" =>
["rel" => "alias",
}
/**
- * @brief Fetch information (protocol endpoints and user information) about a given uri
+ * Fetch information (protocol endpoints and user information) about a given uri
*
* @param string $uri Address that should be probed
* @param string $network Test for this specific network
public static function uri($uri, $network = '', $uid = -1, $cache = true)
{
if ($cache) {
- $result = Cache::get('Probe::uri:' . $network . ':' . $uri);
+ $result = DI::cache()->get('Probe::uri:' . $network . ':' . $uri);
if (!is_null($result)) {
return $result;
}
$data['url'] = $uri;
}
- if (!empty($data['photo'])) {
- $data['baseurl'] = Network::getUrlMatch(Strings::normaliseLink($data['baseurl'] ?? ''), Strings::normaliseLink($data['photo']));
- } else {
- $data['photo'] = System::baseUrl() . '/images/person-300.jpg';
+ if (!empty($data['photo']) && !empty($data['baseurl'])) {
+ $data['baseurl'] = Network::getUrlMatch(Strings::normaliseLink($data['baseurl']), Strings::normaliseLink($data['photo']));
+ } elseif (empty($data['photo'])) {
+ $data['photo'] = DI::baseUrl() . '/images/person-300.jpg';
}
if (empty($data['name'])) {
$data['baseurl'] = self::$baseurl;
}
+ if (!empty($data['baseurl']) && empty($data['gsid'])) {
+ $data['gsid'] = GServer::getID($data['baseurl']);
+ }
+
if (empty($data['network'])) {
$data['network'] = Protocol::PHANTOM;
}
+ // Ensure that local connections always are DFRN
+ if (($network == '') && ($data['network'] != Protocol::PHANTOM) && (self::ownHost($data['baseurl'] ?? '') || self::ownHost($data['url']))) {
+ $data['network'] = Protocol::DFRN;
+ }
+
if (!isset($data['hide']) && in_array($data['network'], Protocol::FEDERATED)) {
$data['hide'] = self::getHideStatus($data['url']);
}
// Only store into the cache if the value seems to be valid
if (!in_array($data['network'], [Protocol::PHANTOM, Protocol::MAIL])) {
- Cache::set('Probe::uri:' . $network . ':' . $uri, $data, Cache::DAY);
+ DI::cache()->set('Probe::uri:' . $network . ':' . $uri, $data, Duration::DAY);
}
return $data;
}
/**
- * @brief Checks if a profile url should be OStatus but only provides partial information
+ * Checks if a profile url should be OStatus but only provides partial information
*
* @param array $webfinger Webfinger data
* @param string $lrdd Path template for webfinger request
}
/**
- * @brief Fetch information (protocol endpoints and user information) about a given uri
+ * Fetch information (protocol endpoints and user information) about a given uri
*
* This function is only called by the "uri" function that adds caching and rearranging of data.
*
if ((!$result && ($network == "")) || ($network == Protocol::OSTATUS)) {
$result = self::ostatus($webfinger);
}
+ if (in_array($network, ['', Protocol::ZOT])) {
+ $result = self::zot($webfinger, $result);
+ }
if ((!$result && ($network == "")) || ($network == Protocol::PUMPIO)) {
$result = self::pumpio($webfinger, $addr);
}
Logger::log($uri." is ".$result["network"], Logger::DEBUG);
- if (empty($result["baseurl"])) {
+ if (empty($result["baseurl"]) && ($result["network"] != Protocol::PHANTOM)) {
$pos = strpos($result["url"], $host);
if ($pos) {
$result["baseurl"] = substr($result["url"], 0, $pos).$host;
}
/**
- * @brief Perform a webfinger request.
+ * Check for Zot contact
+ *
+ * @param array $webfinger Webfinger data
+ * @param array $data previously probed data
+ *
+ * @return array Zot data
+ * @throws HTTPException\InternalServerErrorException
+ */
+ private static function zot($webfinger, $data)
+ {
+ if (!empty($webfinger["aliases"]) && is_array($webfinger["aliases"])) {
+ foreach ($webfinger["aliases"] as $alias) {
+ if (substr($alias, 0, 5) == 'acct:') {
+ $data["addr"] = substr($alias, 5);
+ }
+ }
+ }
+
+ if (!empty($webfinger["subject"]) && (substr($webfinger["subject"], 0, 5) == "acct:")) {
+ $data["addr"] = substr($webfinger["subject"], 5);
+ }
+
+ $zot_url = '';
+ foreach ($webfinger['links'] as $link) {
+ if (($link['rel'] == 'http://purl.org/zot/protocol') && !empty($link['href'])) {
+ $zot_url = $link['href'];
+ }
+ }
+
+ if (empty($zot_url) && !empty($data['addr']) && !empty(self::$baseurl)) {
+ $condition = ['nurl' => Strings::normaliseLink(self::$baseurl), 'platform' => ['hubzilla']];
+ if (!DBA::exists('gserver', $condition)) {
+ return $data;
+ }
+ $zot_url = self::$baseurl . '/.well-known/zot-info?address=' . $data['addr'];
+ }
+
+ if (empty($zot_url)) {
+ return $data;
+ }
+
+ $data = self::pollZot($zot_url, $data);
+
+ if (!empty($data['url']) && !empty($webfinger['aliases']) && is_array($webfinger['aliases'])) {
+ foreach ($webfinger['aliases'] as $alias) {
+ if (!strstr($alias, '@') && Strings::normaliseLink($alias) != Strings::normaliseLink($data['url'])) {
+ $data['alias'] = $alias;
+ }
+ }
+ }
+
+ return $data;
+ }
+
+ public static function pollZot($url, $data)
+ {
+ $curlResult = Network::curl($url);
+ if ($curlResult->isTimeout()) {
+ return $data;
+ }
+ $content = $curlResult->getBody();
+ if (!$content) {
+ return $data;
+ }
+
+ $json = json_decode($content, true);
+ if (!is_array($json)) {
+ return $data;
+ }
+
+ if (empty($data['network'])) {
+ if (!empty($json['protocols']) && in_array('zot', $json['protocols'])) {
+ $data['network'] = Protocol::ZOT;
+ } elseif (!isset($json['protocols'])) {
+ $data['network'] = Protocol::ZOT;
+ }
+ }
+
+ if (!empty($json['guid']) && empty($data['guid'])) {
+ $data['guid'] = $json['guid'];
+ }
+ if (!empty($json['key']) && empty($data['pubkey'])) {
+ $data['pubkey'] = $json['key'];
+ }
+ if (!empty($json['name'])) {
+ $data['name'] = $json['name'];
+ }
+ if (!empty($json['photo'])) {
+ $data['photo'] = $json['photo'];
+ if (!empty($json['photo_updated'])) {
+ $data['photo'] .= '?rev=' . urlencode($json['photo_updated']);
+ }
+ }
+ if (!empty($json['address'])) {
+ $data['addr'] = $json['address'];
+ }
+ if (!empty($json['url'])) {
+ $data['url'] = $json['url'];
+ }
+ if (!empty($json['connections_url'])) {
+ $data['poco'] = $json['connections_url'];
+ }
+ if (isset($json['searchable'])) {
+ $data['hide'] = !$json['searchable'];
+ }
+ if (!empty($json['public_forum'])) {
+ $data['community'] = $json['public_forum'];
+ $data['account-type'] = Contact::PAGE_COMMUNITY;
+ }
+
+ if (!empty($json['profile'])) {
+ $profile = $json['profile'];
+ if (!empty($profile['description'])) {
+ $data['about'] = $profile['description'];
+ }
+ if (!empty($profile['keywords'])) {
+ $keywords = implode(', ', $profile['keywords']);
+ if (!empty($keywords)) {
+ $data['keywords'] = $keywords;
+ }
+ }
+
+ $loc = [];
+ if (!empty($profile['region'])) {
+ $loc['region'] = $profile['region'];
+ }
+ if (!empty($profile['country'])) {
+ $loc['country-name'] = $profile['country'];
+ }
+ $location = Profile::formatLocation($loc);
+ if (!empty($location)) {
+ $data['location'] = $location;
+ }
+ }
+
+ return $data;
+ }
+
+ /**
+ * Perform a webfinger request.
*
* For details see RFC 7033: <https://tools.ietf.org/html/rfc7033>
*
*/
private static function webfinger($url, $type)
{
- $xrd_timeout = Config::get('system', 'xrd_timeout', 20);
+ $xrd_timeout = DI::config()->get('system', 'xrd_timeout', 20);
$curlResult = Network::curl($url, false, ['timeout' => $xrd_timeout, 'accept_content' => $type]);
if ($curlResult->isTimeout()) {
}
// If it is not JSON, maybe it is XML
- $xrd = XML::parseString($data, false);
+ $xrd = XML::parseString($data, true);
if (!is_object($xrd)) {
Logger::log("No webfinger data retrievable for ".$url, Logger::DEBUG);
return false;
}
/**
- * @brief Poll the Friendica specific noscrape page.
+ * Poll the Friendica specific noscrape page.
*
* "noscrape" is a faster alternative to fetch the data from the hcard.
* This functionality was originally created for the directory.
$data["about"] = $json["about"];
}
- if (!empty($json["gender"])) {
- $data["gender"] = $json["gender"];
- }
-
if (!empty($json["key"])) {
$data["pubkey"] = $json["key"];
}
}
/**
- * @brief Check for valid DFRN data
+ * Check for valid DFRN data
*
* @param array $data DFRN data
*
}
/**
- * @brief Fetch data from a DFRN profile page and via "noscrape"
+ * Fetch data from a DFRN profile page and via "noscrape"
*
* @param string $profile_link Link to the profile page
*
}
/**
- * @brief Check for DFRN contact
+ * Check for DFRN contact
*
* @param array $webfinger Webfinger data
*
}
/**
- * @brief Poll the hcard page (Diaspora and Friendica specific)
+ * Poll the hcard page (Diaspora and Friendica specific)
*
* @param string $hcard_url Link to the hcard page
* @param array $data The already fetched data
}
/**
- * @brief Check for Diaspora contact
+ * Check for Diaspora contact
*
* @param array $webfinger Webfinger data
*
{
$hcard_url = "";
$data = [];
+
// The array is reversed to take into account the order of preference for same-rel links
// See: https://tools.ietf.org/html/rfc7033#section-4.4.4
foreach (array_reverse($webfinger["links"]) as $link) {
}
}
- if (!isset($data["url"]) || ($hcard_url == "")) {
+ if (empty($data["url"]) || empty($hcard_url)) {
return false;
}
return false;
}
- if (isset($data["url"])
- && isset($data["guid"])
- && isset($data["baseurl"])
- && isset($data["pubkey"])
- && ($hcard_url != "")
+ if (!empty($data["url"])
+ && !empty($data["guid"])
+ && !empty($data["baseurl"])
+ && !empty($data["pubkey"])
+ && !empty($hcard_url)
) {
$data["network"] = Protocol::DIASPORA;
}
/**
- * @brief Check for OStatus contact
+ * Check for OStatus contact
*
* @param array $webfinger Webfinger data
* @param bool $short Short detection mode
return false;
}
$feed = $curlResult->getBody();
- $dummy1 = null;
- $dummy2 = null;
- $dummy2 = null;
- $feed_data = Feed::import($feed, $dummy1, $dummy2, $dummy3, true);
+ $feed_data = Feed::import($feed);
if (!$feed_data) {
return false;
}
}
/**
- * @brief Fetch data from a pump.io profile page
+ * Fetch data from a pump.io profile page
*
* @param string $profile_link Link to the profile page
*
*/
private static function pumpioProfileData($profile_link)
{
+ $curlResult = Network::curl($profile_link);
+ if (!$curlResult->isSuccess()) {
+ return false;
+ }
+
$doc = new DOMDocument();
- if (!@$doc->loadHTMLFile($profile_link)) {
+ if (!@$doc->loadHTML($curlResult->getBody())) {
return false;
}
}
/**
- * @brief Check for pump.io contact
+ * Check for pump.io contact
*
- * @param array $webfinger Webfinger data
- *
- * @param $addr
+ * @param array $webfinger Webfinger data
+ * @param string $addr
* @return array pump.io data
*/
private static function pumpio($webfinger, $addr)
}
/**
- * @brief Check for twitter contact
+ * Check for twitter contact
*
* @param string $uri
*
}
/**
- * @brief Check page for feed link
+ * Check page for feed link
*
* @param string $url Page link
*
*/
private static function getFeedLink($url)
{
- $doc = new DOMDocument();
+ $curlResult = Network::curl($url);
+ if (!$curlResult->isSuccess()) {
+ return false;
+ }
- if (!@$doc->loadHTMLFile($url)) {
+ $doc = new DOMDocument();
+ if (!@$doc->loadHTML($curlResult->getBody())) {
return false;
}
}
/**
- * @brief Check for feed contact
+ * Check for feed contact
*
* @param string $url Profile link
* @param boolean $probe Do a probe if the page contains a feed link
return false;
}
$feed = $curlResult->getBody();
- $dummy1 = $dummy2 = $dummy3 = null;
- $feed_data = Feed::import($feed, $dummy1, $dummy2, $dummy3, true);
+ $feed_data = Feed::import($feed);
if (!$feed_data) {
if (!$probe) {
}
/**
- * @brief Check for mail contact
+ * Check for mail contact
*
* @param string $uri Profile link
* @param integer $uid User ID
}
/**
- * @brief Mix two paths together to possibly fix missing parts
+ * Mix two paths together to possibly fix missing parts
*
* @param string $avatar Path to the avatar
* @param string $base Another path that is hopefully complete
projects / friendica.git / blobdiff