$cid]); if (DBA::isResult($contact)) { $url = $contact['poco']; $uid = $contact['uid']; } } if (!$uid) { return; } } if (!$url) { return; } $url = $url . (($uid) ? '/@me/@all?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation' : '?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation') ; logger('load: ' . $url, LOGGER_DEBUG); $s = Network::fetchUrl($url); logger('load: returns ' . $s, LOGGER_DATA); logger('load: return code: ' . $a->get_curl_code(), LOGGER_DEBUG); if (($a->get_curl_code() > 299) || (! $s)) { return; } $j = json_decode($s, true); logger('load: json: ' . print_r($j, true), LOGGER_DATA); if (!isset($j['entry'])) { return; } $total = 0; foreach ($j['entry'] as $entry) { $total ++; $profile_url = ''; $profile_photo = ''; $connect_url = ''; $name = ''; $network = ''; $updated = NULL_DATE; $location = ''; $about = ''; $keywords = ''; $gender = ''; $contact_type = -1; $generation = 0; if (!empty($entry['displayName'])) { $name = $entry['displayName']; } if (isset($entry['urls'])) { foreach ($entry['urls'] as $url) { if ($url['type'] == 'profile') { $profile_url = $url['value']; continue; } if ($url['type'] == 'webfinger') { $connect_url = str_replace('acct:', '', $url['value']); continue; } } } if (isset($entry['photos'])) { foreach ($entry['photos'] as $photo) { if ($photo['type'] == 'profile') { $profile_photo = $photo['value']; continue; } } } if (isset($entry['updated'])) { $updated = date(DateTimeFormat::MYSQL, strtotime($entry['updated'])); } if (isset($entry['network'])) { $network = $entry['network']; } if (isset($entry['currentLocation'])) { $location = $entry['currentLocation']; } if (isset($entry['aboutMe'])) { $about = HTML::toBBCode($entry['aboutMe']); } if (isset($entry['gender'])) { $gender = $entry['gender']; } if (isset($entry['generation']) && ($entry['generation'] > 0)) { $generation = ++$entry['generation']; } if (isset($entry['tags'])) { foreach ($entry['tags'] as $tag) { $keywords = implode(", ", $tag); } } if (isset($entry['contactType']) && ($entry['contactType'] >= 0)) { $contact_type = $entry['contactType']; } $gcontact = ["url" => $profile_url, "name" => $name, "network" => $network, "photo" => $profile_photo, "about" => $about, "location" => $location, "gender" => $gender, "keywords" => $keywords, "connect" => $connect_url, "updated" => $updated, "contact-type" => $contact_type, "generation" => $generation]; try { $gcontact = GContact::sanitize($gcontact); $gcid = GContact::update($gcontact); GContact::link($gcid, $uid, $cid, $zcid); } catch (Exception $e) { logger($e->getMessage(), LOGGER_DEBUG); } } logger("load: loaded $total entries", LOGGER_DEBUG); $condition = ["`cid` = ? AND `uid` = ? AND `zcid` = ? AND `updated` < UTC_TIMESTAMP - INTERVAL 2 DAY", $cid, $uid, $zcid]; DBA::delete('glink', $condition); } public static function reachable($profile, $server = "", $network = "", $force = false) { if ($server == "") { $server = self::detectServer($profile); } if ($server == "") { return true; } return self::checkServer($server, $network, $force); } public static function detectServer($profile) { // Try to detect the server path based upon some known standard paths $server_url = ""; if ($server_url == "") { $friendica = preg_replace("=(https?://)(.*)/profile/(.*)=ism", "$1$2", $profile); if ($friendica != $profile) { $server_url = $friendica; $network = Protocol::DFRN; } } if ($server_url == "") { $diaspora = preg_replace("=(https?://)(.*)/u/(.*)=ism", "$1$2", $profile); if ($diaspora != $profile) { $server_url = $diaspora; $network = Protocol::DIASPORA; } } if ($server_url == "") { $red = preg_replace("=(https?://)(.*)/channel/(.*)=ism", "$1$2", $profile); if ($red != $profile) { $server_url = $red; $network = Protocol::DIASPORA; } } // Mastodon if ($server_url == "") { $mastodon = preg_replace("=(https?://)(.*)/users/(.*)=ism", "$1$2", $profile); if ($mastodon != $profile) { $server_url = $mastodon; $network = Protocol::OSTATUS; } } // Numeric OStatus variant if ($server_url == "") { $ostatus = preg_replace("=(https?://)(.*)/user/(.*)=ism", "$1$2", $profile); if ($ostatus != $profile) { $server_url = $ostatus; $network = Protocol::OSTATUS; } } // Wild guess if ($server_url == "") { $base = preg_replace("=(https?://)(.*?)/(.*)=ism", "$1$2", $profile); if ($base != $profile) { $server_url = $base; $network = Protocol::PHANTOM; } } if ($server_url == "") { return ""; } $r = q( "SELECT `id` FROM `gserver` WHERE `nurl` = '%s' AND `last_contact` > `last_failure`", DBA::escape(normalise_link($server_url)) ); if (DBA::isResult($r)) { return $server_url; } // Fetch the host-meta to check if this really is a server $serverret = Network::curl($server_url."/.well-known/host-meta"); if (!$serverret["success"]) { return ""; } return $server_url; } public static function alternateOStatusUrl($url) { return(preg_match("=https?://.+/user/\d+=ism", $url, $matches)); } public static function lastUpdated($profile, $force = false) { $gcontacts = q( "SELECT * FROM `gcontact` WHERE `nurl` = '%s'", DBA::escape(normalise_link($profile)) ); if (!DBA::isResult($gcontacts)) { return false; } $contact = ["url" => $profile]; if ($gcontacts[0]["created"] <= NULL_DATE) { $contact['created'] = DateTimeFormat::utcNow(); } $server_url = ''; if ($force) { $server_url = normalise_link(self::detectServer($profile)); } if (($server_url == '') && ($gcontacts[0]["server_url"] != "")) { $server_url = $gcontacts[0]["server_url"]; } if (!$force && (($server_url == '') || ($gcontacts[0]["server_url"] == $gcontacts[0]["nurl"]))) { $server_url = normalise_link(self::detectServer($profile)); } if (!in_array($gcontacts[0]["network"], [Protocol::DFRN, Protocol::DIASPORA, Protocol::FEED, Protocol::OSTATUS, ""])) { logger("Profile ".$profile.": Network type ".$gcontacts[0]["network"]." can't be checked", LOGGER_DEBUG); return false; } if ($server_url != "") { if (!self::checkServer($server_url, $gcontacts[0]["network"], $force)) { if ($force) { $fields = ['last_failure' => DateTimeFormat::utcNow()]; DBA::update('gcontact', $fields, ['nurl' => normalise_link($profile)]); } logger("Profile ".$profile.": Server ".$server_url." wasn't reachable.", LOGGER_DEBUG); return false; } $contact['server_url'] = $server_url; } if (in_array($gcontacts[0]["network"], ["", Protocol::FEED])) { $server = q( "SELECT `network` FROM `gserver` WHERE `nurl` = '%s' AND `network` != ''", DBA::escape(normalise_link($server_url)) ); if ($server) { $contact['network'] = $server[0]["network"]; } else { return false; } } // noscrape is really fast so we don't cache the call. if (($server_url != "") && ($gcontacts[0]["nick"] != "")) { // Use noscrape if possible $server = q("SELECT `noscrape`, `network` FROM `gserver` WHERE `nurl` = '%s' AND `noscrape` != ''", DBA::escape(normalise_link($server_url))); if ($server) { $noscraperet = Network::curl($server[0]["noscrape"]."/".$gcontacts[0]["nick"]); if ($noscraperet["success"] && ($noscraperet["body"] != "")) { $noscrape = json_decode($noscraperet["body"], true); if (is_array($noscrape)) { $contact["network"] = $server[0]["network"]; if (isset($noscrape["fn"])) { $contact["name"] = $noscrape["fn"]; } if (isset($noscrape["comm"])) { $contact["community"] = $noscrape["comm"]; } if (isset($noscrape["tags"])) { $keywords = implode(" ", $noscrape["tags"]); if ($keywords != "") { $contact["keywords"] = $keywords; } } $location = Profile::formatLocation($noscrape); if ($location) { $contact["location"] = $location; } if (isset($noscrape["dfrn-notify"])) { $contact["notify"] = $noscrape["dfrn-notify"]; } // Remove all fields that are not present in the gcontact table unset($noscrape["fn"]); unset($noscrape["key"]); unset($noscrape["homepage"]); unset($noscrape["comm"]); unset($noscrape["tags"]); unset($noscrape["locality"]); unset($noscrape["region"]); unset($noscrape["country-name"]); unset($noscrape["contacts"]); unset($noscrape["dfrn-request"]); unset($noscrape["dfrn-confirm"]); unset($noscrape["dfrn-notify"]); unset($noscrape["dfrn-poll"]); // Set the date of the last contact /// @todo By now the function "update_gcontact" doesn't work with this field //$contact["last_contact"] = DateTimeFormat::utcNow(); $contact = array_merge($contact, $noscrape); GContact::update($contact); if (!empty($noscrape["updated"])) { $fields = ['last_contact' => DateTimeFormat::utcNow()]; DBA::update('gcontact', $fields, ['nurl' => normalise_link($profile)]); logger("Profile ".$profile." was last updated at ".$noscrape["updated"]." (noscrape)", LOGGER_DEBUG); return $noscrape["updated"]; } } } } } // If we only can poll the feed, then we only do this once a while if (!$force && !self::updateNeeded($gcontacts[0]["created"], $gcontacts[0]["updated"], $gcontacts[0]["last_failure"], $gcontacts[0]["last_contact"])) { logger("Profile ".$profile." was last updated at ".$gcontacts[0]["updated"]." (cached)", LOGGER_DEBUG); GContact::update($contact); return $gcontacts[0]["updated"]; } $data = Probe::uri($profile); // Is the profile link the alternate OStatus link notation? (http://domain.tld/user/4711) // Then check the other link and delete this one if (($data["network"] == Protocol::OSTATUS) && self::alternateOStatusUrl($profile) && (normalise_link($profile) == normalise_link($data["alias"])) && (normalise_link($profile) != normalise_link($data["url"])) ) { // Delete the old entry DBA::delete('gcontact', ['nurl' => normalise_link($profile)]); $gcontact = array_merge($gcontacts[0], $data); $gcontact["server_url"] = $data["baseurl"]; try { $gcontact = GContact::sanitize($gcontact); GContact::update($gcontact); self::lastUpdated($data["url"], $force); } catch (Exception $e) { logger($e->getMessage(), LOGGER_DEBUG); } logger("Profile ".$profile." was deleted", LOGGER_DEBUG); return false; } if (($data["poll"] == "") || (in_array($data["network"], [Protocol::FEED, Protocol::PHANTOM]))) { $fields = ['last_failure' => DateTimeFormat::utcNow()]; DBA::update('gcontact', $fields, ['nurl' => normalise_link($profile)]); logger("Profile ".$profile." wasn't reachable (profile)", LOGGER_DEBUG); return false; } $contact = array_merge($contact, $data); $contact["server_url"] = $data["baseurl"]; GContact::update($contact); $feedret = Network::curl($data["poll"]); if (!$feedret["success"]) { $fields = ['last_failure' => DateTimeFormat::utcNow()]; DBA::update('gcontact', $fields, ['nurl' => normalise_link($profile)]); logger("Profile ".$profile." wasn't reachable (no feed)", LOGGER_DEBUG); return false; } $doc = new DOMDocument(); /// @TODO Avoid error supression here @$doc->loadXML($feedret["body"]); $xpath = new DOMXPath($doc); $xpath->registerNamespace('atom', "http://www.w3.org/2005/Atom"); $entries = $xpath->query('/atom:feed/atom:entry'); $last_updated = ""; foreach ($entries as $entry) { $published = DateTimeFormat::utc($xpath->query('atom:published/text()', $entry)->item(0)->nodeValue); $updated = DateTimeFormat::utc($xpath->query('atom:updated/text()' , $entry)->item(0)->nodeValue); if ($last_updated < $published) { $last_updated = $published; } if ($last_updated < $updated) { $last_updated = $updated; } } // Maybe there aren't any entries. Then check if it is a valid feed if ($last_updated == "") { if ($xpath->query('/atom:feed')->length > 0) { $last_updated = NULL_DATE; } } $fields = ['last_contact' => DateTimeFormat::utcNow()]; if (!empty($last_updated)) { $fields['updated'] = $last_updated; } DBA::update('gcontact', $fields, ['nurl' => normalise_link($profile)]); if (($gcontacts[0]["generation"] == 0)) { $fields = ['generation' => 9]; DBA::update('gcontact', $fields, ['nurl' => normalise_link($profile)]); } logger("Profile ".$profile." was last updated at ".$last_updated, LOGGER_DEBUG); return $last_updated; } public static function updateNeeded($created, $updated, $last_failure, $last_contact) { $now = strtotime(DateTimeFormat::utcNow()); if ($updated > $last_contact) { $contact_time = strtotime($updated); } else { $contact_time = strtotime($last_contact); } $failure_time = strtotime($last_failure); $created_time = strtotime($created); // If there is no "created" time then use the current time if ($created_time <= 0) { $created_time = $now; } // If the last contact was less than 24 hours then don't update if (($now - $contact_time) < (60 * 60 * 24)) { return false; } // If the last failure was less than 24 hours then don't update if (($now - $failure_time) < (60 * 60 * 24)) { return false; } // If the last contact was less than a week ago and the last failure is older than a week then don't update //if ((($now - $contact_time) < (60 * 60 * 24 * 7)) && ($contact_time > $failure_time)) // return false; // If the last contact time was more than a week ago and the contact was created more than a week ago, then only try once a week if ((($now - $contact_time) > (60 * 60 * 24 * 7)) && (($now - $created_time) > (60 * 60 * 24 * 7)) && (($now - $failure_time) < (60 * 60 * 24 * 7))) { return false; } // If the last contact time was more than a month ago and the contact was created more than a month ago, then only try once a month if ((($now - $contact_time) > (60 * 60 * 24 * 30)) && (($now - $created_time) > (60 * 60 * 24 * 30)) && (($now - $failure_time) < (60 * 60 * 24 * 30))) { return false; } return true; } /// @TODO Maybe move this out to an utilities class? private static function toBoolean($val) { if (($val == "true") || ($val == 1)) { return true; } elseif (($val == "false") || ($val == 0)) { return false; } return $val; } /** * @brief Detect server type (Hubzilla or Friendica) via the poco data * * @param array $data POCO data * @return array Server data */ private static function detectPocoData(array $data) { $server = false; if (!isset($data['entry'])) { return false; } if (count($data['entry']) == 0) { return false; } if (!isset($data['entry'][0]['urls'])) { return false; } if (count($data['entry'][0]['urls']) == 0) { return false; } foreach ($data['entry'][0]['urls'] as $url) { if ($url['type'] == 'zot') { $server = []; $server["platform"] = 'Hubzilla'; $server["network"] = Protocol::DIASPORA; return $server; } } return false; } /** * @brief Detect server type by using the nodeinfo data * * @param string $server_url address of the server * @return array Server data */ private static function fetchNodeinfo($server_url) { $serverret = Network::curl($server_url."/.well-known/nodeinfo"); if (!$serverret["success"]) { return false; } $nodeinfo = json_decode($serverret['body'], true); if (!is_array($nodeinfo) || !isset($nodeinfo['links'])) { return false; } $nodeinfo1_url = ''; $nodeinfo2_url = ''; foreach ($nodeinfo['links'] as $link) { if (!is_array($link) || empty($link['rel'])) { logger('Invalid nodeinfo format for ' . $server_url, LOGGER_DEBUG); continue; } if ($link['rel'] == 'http://nodeinfo.diaspora.software/ns/schema/1.0') { $nodeinfo1_url = $link['href']; } elseif ($link['rel'] == 'http://nodeinfo.diaspora.software/ns/schema/2.0') { $nodeinfo2_url = $link['href']; } } if ($nodeinfo1_url . $nodeinfo2_url == '') { return false; } $server = []; // When the nodeinfo url isn't on the same host, then there is obviously something wrong if (!empty($nodeinfo2_url) && (parse_url($server_url, PHP_URL_HOST) == parse_url($nodeinfo2_url, PHP_URL_HOST))) { $server = self::parseNodeinfo2($nodeinfo2_url); } // When the nodeinfo url isn't on the same host, then there is obviously something wrong if (empty($server) && !empty($nodeinfo1_url) && (parse_url($server_url, PHP_URL_HOST) == parse_url($nodeinfo1_url, PHP_URL_HOST))) { $server = self::parseNodeinfo1($nodeinfo1_url); } return $server; } /** * @brief Parses Nodeinfo 1 * * @param string $nodeinfo_url address of the nodeinfo path * @return array Server data */ private static function parseNodeinfo1($nodeinfo_url) { $serverret = Network::curl($nodeinfo_url); if (!$serverret["success"]) { return false; } $nodeinfo = json_decode($serverret['body'], true); if (!is_array($nodeinfo)) { return false; } $server = []; $server['register_policy'] = REGISTER_CLOSED; if (is_bool($nodeinfo['openRegistrations']) && $nodeinfo['openRegistrations']) { $server['register_policy'] = REGISTER_OPEN; } if (is_array($nodeinfo['software'])) { if (isset($nodeinfo['software']['name'])) { $server['platform'] = $nodeinfo['software']['name']; } if (isset($nodeinfo['software']['version'])) { $server['version'] = $nodeinfo['software']['version']; // Version numbers on Nodeinfo are presented with additional info, e.g.: // 0.6.3.0-p1702cc1c, 0.6.99.0-p1b9ab160 or 3.4.3-2-1191. $server['version'] = preg_replace("=(.+)-(.{4,})=ism", "$1", $server['version']); } } if (is_array($nodeinfo['metadata']) && isset($nodeinfo['metadata']['nodeName'])) { $server['site_name'] = $nodeinfo['metadata']['nodeName']; } if (!empty($nodeinfo['usage']['users']['total'])) { $server['registered-users'] = $nodeinfo['usage']['users']['total']; } $diaspora = false; $friendica = false; $gnusocial = false; if (is_array($nodeinfo['protocols']['inbound'])) { foreach ($nodeinfo['protocols']['inbound'] as $inbound) { if ($inbound == 'diaspora') { $diaspora = true; } if ($inbound == 'friendica') { $friendica = true; } if ($inbound == 'gnusocial') { $gnusocial = true; } } } if ($gnusocial) { $server['network'] = Protocol::OSTATUS; } if ($diaspora) { $server['network'] = Protocol::DIASPORA; } if ($friendica) { $server['network'] = Protocol::DFRN; } if (!$server) { return false; } return $server; } /** * @brief Parses Nodeinfo 2 * * @param string $nodeinfo_url address of the nodeinfo path * @return array Server data */ private static function parseNodeinfo2($nodeinfo_url) { $serverret = Network::curl($nodeinfo_url); if (!$serverret["success"]) { return false; } $nodeinfo = json_decode($serverret['body'], true); if (!is_array($nodeinfo)) { return false; } $server = []; $server['register_policy'] = REGISTER_CLOSED; if (is_bool($nodeinfo['openRegistrations']) && $nodeinfo['openRegistrations']) { $server['register_policy'] = REGISTER_OPEN; } if (is_array($nodeinfo['software'])) { if (isset($nodeinfo['software']['name'])) { $server['platform'] = $nodeinfo['software']['name']; } if (isset($nodeinfo['software']['version'])) { $server['version'] = $nodeinfo['software']['version']; // Version numbers on Nodeinfo are presented with additional info, e.g.: // 0.6.3.0-p1702cc1c, 0.6.99.0-p1b9ab160 or 3.4.3-2-1191. $server['version'] = preg_replace("=(.+)-(.{4,})=ism", "$1", $server['version']); } } if (is_array($nodeinfo['metadata']) && isset($nodeinfo['metadata']['nodeName'])) { $server['site_name'] = $nodeinfo['metadata']['nodeName']; } if (!empty($nodeinfo['usage']['users']['total'])) { $server['registered-users'] = $nodeinfo['usage']['users']['total']; } $diaspora = false; $friendica = false; $gnusocial = false; if (!empty($nodeinfo['protocols'])) { foreach ($nodeinfo['protocols'] as $protocol) { if ($protocol == 'diaspora') { $diaspora = true; } elseif ($protocol == 'friendica') { $friendica = true; } elseif ($protocol == 'gnusocial') { $gnusocial = true; } } } if ($gnusocial) { $server['network'] = Protocol::OSTATUS; } elseif ($diaspora) { $server['network'] = Protocol::DIASPORA; } elseif ($friendica) { $server['network'] = Protocol::DFRN; } if (empty($server)) { return false; } return $server; } /** * @brief Detect server type (Hubzilla or Friendica) via the front page body * * @param string $body Front page of the server * @return array Server data */ private static function detectServerType($body) { $server = false; $doc = new DOMDocument(); /// @TODO Acoid supressing error @$doc->loadHTML($body); $xpath = new DOMXPath($doc); $list = $xpath->query("//meta[@name]"); foreach ($list as $node) { $attr = []; if ($node->attributes->length) { foreach ($node->attributes as $attribute) { $attr[$attribute->name] = $attribute->value; } } if ($attr['name'] == 'generator') { $version_part = explode(" ", $attr['content']); if (count($version_part) == 2) { if (in_array($version_part[0], ["Friendika", "Friendica"])) { $server = []; $server["platform"] = $version_part[0]; $server["version"] = $version_part[1]; $server["network"] = Protocol::DFRN; } } } } if (!$server) { $list = $xpath->query("//meta[@property]"); foreach ($list as $node) { $attr = []; if ($node->attributes->length) { foreach ($node->attributes as $attribute) { $attr[$attribute->name] = $attribute->value; } } if ($attr['property'] == 'generator' && in_array($attr['content'], ["hubzilla", "BlaBlaNet"])) { $server = []; $server["platform"] = $attr['content']; $server["version"] = ""; $server["network"] = Protocol::DIASPORA; } } } if (!$server) { return false; } $server["site_name"] = XML::getFirstNodeValue($xpath, '//head/title/text()'); return $server; } public static function checkServer($server_url, $network = "", $force = false) { // Unify the server address $server_url = trim($server_url, "/"); $server_url = str_replace("/index.php", "", $server_url); if ($server_url == "") { return false; } $gserver = DBA::selectFirst('gserver', [], ['nurl' => normalise_link($server_url)]); if (DBA::isResult($gserver)) { if ($gserver["created"] <= NULL_DATE) { $fields = ['created' => DateTimeFormat::utcNow()]; $condition = ['nurl' => normalise_link($server_url)]; DBA::update('gserver', $fields, $condition); } $poco = $gserver["poco"]; $noscrape = $gserver["noscrape"]; if ($network == "") { $network = $gserver["network"]; } $last_contact = $gserver["last_contact"]; $last_failure = $gserver["last_failure"]; $version = $gserver["version"]; $platform = $gserver["platform"]; $site_name = $gserver["site_name"]; $info = $gserver["info"]; $register_policy = $gserver["register_policy"]; $registered_users = $gserver["registered-users"]; // See discussion under https://forum.friendi.ca/display/0b6b25a8135aabc37a5a0f5684081633 // It can happen that a zero date is in the database, but storing it again is forbidden. if ($last_contact < NULL_DATE) { $last_contact = NULL_DATE; } if ($last_failure < NULL_DATE) { $last_failure = NULL_DATE; } if (!$force && !self::updateNeeded($gserver["created"], "", $last_failure, $last_contact)) { logger("Use cached data for server ".$server_url, LOGGER_DEBUG); return ($last_contact >= $last_failure); } } else { $poco = ""; $noscrape = ""; $version = ""; $platform = ""; $site_name = ""; $info = ""; $register_policy = -1; $registered_users = 0; $last_contact = NULL_DATE; $last_failure = NULL_DATE; } logger("Server ".$server_url." is outdated or unknown. Start discovery. Force: ".$force." Created: ".$gserver["created"]." Failure: ".$last_failure." Contact: ".$last_contact, LOGGER_DEBUG); $failure = false; $possible_failure = false; $orig_last_failure = $last_failure; $orig_last_contact = $last_contact; // Mastodon uses the "@" for user profiles. // But this can be misunderstood. if (parse_url($server_url, PHP_URL_USER) != '') { DBA::update('gserver', ['last_failure' => DateTimeFormat::utcNow()], ['nurl' => normalise_link($server_url)]); return false; } // Check if the page is accessible via SSL. $orig_server_url = $server_url; $server_url = str_replace("http://", "https://", $server_url); // We set the timeout to 20 seconds since this operation should be done in no time if the server was vital $serverret = Network::curl($server_url."/.well-known/host-meta", false, $redirects, ['timeout' => 20]); // Quit if there is a timeout. // But we want to make sure to only quit if we are mostly sure that this server url fits. if (DBA::isResult($gserver) && ($orig_server_url == $server_url) && (!empty($serverret["errno"]) && ($serverret['errno'] == CURLE_OPERATION_TIMEDOUT))) { logger("Connection to server ".$server_url." timed out.", LOGGER_DEBUG); DBA::update('gserver', ['last_failure' => DateTimeFormat::utcNow()], ['nurl' => normalise_link($server_url)]); return false; } // Maybe the page is unencrypted only? $xmlobj = @simplexml_load_string($serverret["body"], 'SimpleXMLElement', 0, "http://docs.oasis-open.org/ns/xri/xrd-1.0"); if (!$serverret["success"] || ($serverret["body"] == "") || empty($xmlobj) || !is_object($xmlobj)) { $server_url = str_replace("https://", "http://", $server_url); // We set the timeout to 20 seconds since this operation should be done in no time if the server was vital $serverret = Network::curl($server_url."/.well-known/host-meta", false, $redirects, ['timeout' => 20]); // Quit if there is a timeout if (!empty($serverret["errno"]) && ($serverret['errno'] == CURLE_OPERATION_TIMEDOUT)) { logger("Connection to server ".$server_url." timed out.", LOGGER_DEBUG); DBA::update('gserver', ['last_failure' => DateTimeFormat::utcNow()], ['nurl' => normalise_link($server_url)]); return false; } $xmlobj = @simplexml_load_string($serverret["body"], 'SimpleXMLElement', 0, "http://docs.oasis-open.org/ns/xri/xrd-1.0"); } if (!$serverret["success"] || ($serverret["body"] == "") || empty($xmlobj) || !is_object($xmlobj)) { // Workaround for bad configured servers (known nginx problem) if (!empty($serverret["debug"]) && !in_array($serverret["debug"]["http_code"], ["403", "404"])) { $failure = true; } $possible_failure = true; } // If the server has no possible failure we reset the cached data if (!$possible_failure) { $version = ""; $platform = ""; $site_name = ""; $info = ""; $register_policy = -1; } if (!$failure) { // This will be too low, but better than no value at all. $registered_users = DBA::count('gcontact', ['server_url' => normalise_link($server_url)]); } // Look for poco if (!$failure) { $serverret = Network::curl($server_url."/poco"); if ($serverret["success"]) { $data = json_decode($serverret["body"], true); if (isset($data['totalResults'])) { $registered_users = $data['totalResults']; $poco = $server_url . "/poco"; $server = self::detectPocoData($data); if (!empty($server)) { $platform = $server['platform']; $network = $server['network']; $version = ''; $site_name = ''; } } /* * There are servers out there who don't return 404 on a failure * We have to be sure that don't misunderstand this */ if (is_null($data)) { $poco = ""; $noscrape = ""; $network = ""; } } } if (!$failure) { // Test for Diaspora, Hubzilla, Mastodon or older Friendica servers $serverret = Network::curl($server_url); if (!$serverret["success"] || ($serverret["body"] == "")) { $failure = true; } else { $server = self::detectServerType($serverret["body"]); if (!empty($server)) { $platform = $server['platform']; $network = $server['network']; $version = $server['version']; $site_name = $server['site_name']; } $lines = explode("\n", $serverret["header"]); if (count($lines)) { foreach ($lines as $line) { $line = trim($line); if (stristr($line, 'X-Diaspora-Version:')) { $platform = "Diaspora"; $version = trim(str_replace("X-Diaspora-Version:", "", $line)); $version = trim(str_replace("x-diaspora-version:", "", $version)); $network = Protocol::DIASPORA; $versionparts = explode("-", $version); $version = $versionparts[0]; } if (stristr($line, 'Server: Mastodon')) { $platform = "Mastodon"; $network = Protocol::OSTATUS; } } } } } if (!$failure && ($poco == "")) { // Test for Statusnet // Will also return data for Friendica and GNU Social - but it will be overwritten later // The "not implemented" is a special treatment for really, really old Friendica versions $serverret = Network::curl($server_url."/api/statusnet/version.json"); if ($serverret["success"] && ($serverret["body"] != '{"error":"not implemented"}') && ($serverret["body"] != '') && (strlen($serverret["body"]) < 30)) { $platform = "StatusNet"; // Remove junk that some GNU Social servers return $version = str_replace(chr(239).chr(187).chr(191), "", $serverret["body"]); $version = trim($version, '"'); $network = Protocol::OSTATUS; } // Test for GNU Social $serverret = Network::curl($server_url."/api/gnusocial/version.json"); if ($serverret["success"] && ($serverret["body"] != '{"error":"not implemented"}') && ($serverret["body"] != '') && (strlen($serverret["body"]) < 30)) { $platform = "GNU Social"; // Remove junk that some GNU Social servers return $version = str_replace(chr(239) . chr(187) . chr(191), "", $serverret["body"]); $version = trim($version, '"'); $network = Protocol::OSTATUS; } // Test for Mastodon $orig_version = $version; $serverret = Network::curl($server_url . "/api/v1/instance"); if ($serverret["success"] && ($serverret["body"] != '')) { $data = json_decode($serverret["body"], true); if (isset($data['version'])) { $platform = "Mastodon"; $version = $data['version']; $site_name = $data['title']; $info = $data['description']; $network = Protocol::OSTATUS; } if (!empty($data['stats']['user_count'])) { $registered_users = $data['stats']['user_count']; } } if (strstr($orig_version . $version, 'Pleroma')) { $platform = 'Pleroma'; $version = trim(str_replace('Pleroma', '', $version)); } } if (!$failure) { // Test for Hubzilla and Red $serverret = Network::curl($server_url . "/siteinfo.json"); if ($serverret["success"]) { $data = json_decode($serverret["body"], true); if (isset($data['url'])) { $platform = $data['platform']; $version = $data['version']; $network = Protocol::DIASPORA; } if (!empty($data['site_name'])) { $site_name = $data['site_name']; } if (!empty($data['channels_total'])) { $registered_users = $data['channels_total']; } if (!empty($data['register_policy'])) { switch ($data['register_policy']) { case "REGISTER_OPEN": $register_policy = REGISTER_OPEN; break; case "REGISTER_APPROVE": $register_policy = REGISTER_APPROVE; break; case "REGISTER_CLOSED": default: $register_policy = REGISTER_CLOSED; break; } } } else { // Test for Hubzilla, Redmatrix or Friendica $serverret = Network::curl($server_url."/api/statusnet/config.json"); if ($serverret["success"]) { $data = json_decode($serverret["body"], true); if (isset($data['site']['server'])) { if (isset($data['site']['platform'])) { $platform = $data['site']['platform']['PLATFORM_NAME']; $version = $data['site']['platform']['STD_VERSION']; $network = Protocol::DIASPORA; } if (isset($data['site']['BlaBlaNet'])) { $platform = $data['site']['BlaBlaNet']['PLATFORM_NAME']; $version = $data['site']['BlaBlaNet']['STD_VERSION']; $network = Protocol::DIASPORA; } if (isset($data['site']['hubzilla'])) { $platform = $data['site']['hubzilla']['PLATFORM_NAME']; $version = $data['site']['hubzilla']['RED_VERSION']; $network = Protocol::DIASPORA; } if (isset($data['site']['redmatrix'])) { if (isset($data['site']['redmatrix']['PLATFORM_NAME'])) { $platform = $data['site']['redmatrix']['PLATFORM_NAME']; } elseif (isset($data['site']['redmatrix']['RED_PLATFORM'])) { $platform = $data['site']['redmatrix']['RED_PLATFORM']; } $version = $data['site']['redmatrix']['RED_VERSION']; $network = Protocol::DIASPORA; } if (isset($data['site']['friendica'])) { $platform = $data['site']['friendica']['FRIENDICA_PLATFORM']; $version = $data['site']['friendica']['FRIENDICA_VERSION']; $network = Protocol::DFRN; } $site_name = $data['site']['name']; $private = false; $inviteonly = false; $closed = false; if (!empty($data['site']['closed'])) { $closed = self::toBoolean($data['site']['closed']); } if (!empty($data['site']['private'])) { $private = self::toBoolean($data['site']['private']); } if (!empty($data['site']['inviteonly'])) { $inviteonly = self::toBoolean($data['site']['inviteonly']); } if (!$closed && !$private and $inviteonly) { $register_policy = REGISTER_APPROVE; } elseif (!$closed && !$private) { $register_policy = REGISTER_OPEN; } else { $register_policy = REGISTER_CLOSED; } } } } } // Query statistics.json. Optional package for Diaspora, Friendica and Redmatrix if (!$failure) { $serverret = Network::curl($server_url . "/statistics.json"); if ($serverret["success"]) { $data = json_decode($serverret["body"], true); if (isset($data['version'])) { $version = $data['version']; // Version numbers on statistics.json are presented with additional info, e.g.: // 0.6.3.0-p1702cc1c, 0.6.99.0-p1b9ab160 or 3.4.3-2-1191. $version = preg_replace("=(.+)-(.{4,})=ism", "$1", $version); } if (!empty($data['name'])) { $site_name = $data['name']; } if (!empty($data['network'])) { $platform = $data['network']; } if ($platform == "Diaspora") { $network = Protocol::DIASPORA; } if (!empty($data['registrations_open']) && $data['registrations_open']) { $register_policy = REGISTER_OPEN; } else { $register_policy = REGISTER_CLOSED; } } } // Query nodeinfo. Working for (at least) Diaspora and Friendica. if (!$failure) { $server = self::fetchNodeinfo($server_url); if (!empty($server)) { $register_policy = $server['register_policy']; if (isset($server['platform'])) { $platform = $server['platform']; } if (isset($server['network'])) { $network = $server['network']; } if (isset($server['version'])) { $version = $server['version']; } if (isset($server['site_name'])) { $site_name = $server['site_name']; } if (isset($server['registered-users'])) { $registered_users = $server['registered-users']; } } } // Check for noscrape // Friendica servers could be detected as OStatus servers if (!$failure && in_array($network, [Protocol::DFRN, Protocol::OSTATUS])) { $serverret = Network::curl($server_url . "/friendica/json"); if (!$serverret["success"]) { $serverret = Network::curl($server_url . "/friendika/json"); } if ($serverret["success"]) { $data = json_decode($serverret["body"], true); if (isset($data['version'])) { $network = Protocol::DFRN; if (!empty($data['no_scrape_url'])) { $noscrape = $data['no_scrape_url']; } $version = $data['version']; if (!empty($data['site_name'])) { $site_name = $data['site_name']; } $info = $data['info']; $register_policy = constant($data['register_policy']); $platform = $data['platform']; } } } // Every server has got at least an admin account if (!$failure && ($registered_users == 0)) { $registered_users = 1; } if ($possible_failure && !$failure) { $failure = true; } if ($failure) { $last_contact = $orig_last_contact; $last_failure = DateTimeFormat::utcNow(); } else { $last_contact = DateTimeFormat::utcNow(); $last_failure = $orig_last_failure; } if (($last_contact <= $last_failure) && !$failure) { logger("Server ".$server_url." seems to be alive, but last contact wasn't set - could be a bug", LOGGER_DEBUG); } elseif (($last_contact >= $last_failure) && $failure) { logger("Server ".$server_url." seems to be dead, but last failure wasn't set - could be a bug", LOGGER_DEBUG); } // Check again if the server exists $found = DBA::exists('gserver', ['nurl' => normalise_link($server_url)]); $version = strip_tags($version); $site_name = strip_tags($site_name); $info = strip_tags($info); $platform = strip_tags($platform); $fields = ['url' => $server_url, 'version' => $version, 'site_name' => $site_name, 'info' => $info, 'register_policy' => $register_policy, 'poco' => $poco, 'noscrape' => $noscrape, 'network' => $network, 'platform' => $platform, 'registered-users' => $registered_users, 'last_contact' => $last_contact, 'last_failure' => $last_failure]; if ($found) { DBA::update('gserver', $fields, ['nurl' => normalise_link($server_url)]); } elseif (!$failure) { $fields['nurl'] = normalise_link($server_url); $fields['created'] = DateTimeFormat::utcNow(); DBA::insert('gserver', $fields); } if (!$failure && in_array($fields['network'], [Protocol::DFRN, Protocol::DIASPORA])) { self::discoverRelay($server_url); } logger("End discovery for server " . $server_url, LOGGER_DEBUG); return !$failure; } /** * @brief Fetch relay data from a given server url * * @param string $server_url address of the server */ private static function discoverRelay($server_url) { logger("Discover relay data for server " . $server_url, LOGGER_DEBUG); $serverret = Network::curl($server_url . "/.well-known/x-social-relay"); if (!$serverret["success"]) { return; } $data = json_decode($serverret['body'], true); if (!is_array($data)) { return; } $gserver = DBA::selectFirst('gserver', ['id', 'relay-subscribe', 'relay-scope'], ['nurl' => normalise_link($server_url)]); if (!DBA::isResult($gserver)) { return; } if (($gserver['relay-subscribe'] != $data['subscribe']) || ($gserver['relay-scope'] != $data['scope'])) { $fields = ['relay-subscribe' => $data['subscribe'], 'relay-scope' => $data['scope']]; DBA::update('gserver', $fields, ['id' => $gserver['id']]); } DBA::delete('gserver-tag', ['gserver-id' => $gserver['id']]); if ($data['scope'] == 'tags') { // Avoid duplicates $tags = []; foreach ($data['tags'] as $tag) { $tag = mb_strtolower($tag); if (count($tag) < 100) { $tags[$tag] = $tag; } } foreach ($tags as $tag) { DBA::insert('gserver-tag', ['gserver-id' => $gserver['id'], 'tag' => $tag], true); } } // Create or update the relay contact $fields = []; if (isset($data['protocols'])) { if (isset($data['protocols']['diaspora'])) { $fields['network'] = Protocol::DIASPORA; if (isset($data['protocols']['diaspora']['receive'])) { $fields['batch'] = $data['protocols']['diaspora']['receive']; } elseif (is_string($data['protocols']['diaspora'])) { $fields['batch'] = $data['protocols']['diaspora']; } } if (isset($data['protocols']['dfrn'])) { $fields['network'] = Protocol::DFRN; if (isset($data['protocols']['dfrn']['receive'])) { $fields['batch'] = $data['protocols']['dfrn']['receive']; } elseif (is_string($data['protocols']['dfrn'])) { $fields['batch'] = $data['protocols']['dfrn']; } } } Diaspora::setRelayContact($server_url, $fields); } /** * @brief Returns a list of all known servers * @return array List of server urls */ public static function serverlist() { $r = q( "SELECT `url`, `site_name` AS `displayName`, `network`, `platform`, `version` FROM `gserver` WHERE `network` IN ('%s', '%s', '%s') AND `last_contact` > `last_failure` ORDER BY `last_contact` LIMIT 1000", DBA::escape(Protocol::DFRN), DBA::escape(Protocol::DIASPORA), DBA::escape(Protocol::OSTATUS) ); if (!DBA::isResult($r)) { return false; } return $r; } /** * @brief Fetch server list from remote servers and adds them when they are new. * * @param string $poco URL to the POCO endpoint */ private static function fetchServerlist($poco) { $serverret = Network::curl($poco . "/@server"); if (!$serverret["success"]) { return; } $serverlist = json_decode($serverret['body'], true); if (!is_array($serverlist)) { return; } foreach ($serverlist as $server) { $server_url = str_replace("/index.php", "", $server['url']); $r = q("SELECT `nurl` FROM `gserver` WHERE `nurl` = '%s'", DBA::escape(normalise_link($server_url))); if (!DBA::isResult($r)) { logger("Call server check for server ".$server_url, LOGGER_DEBUG); Worker::add(PRIORITY_LOW, "DiscoverPoCo", "server", $server_url); } } } private static function discoverFederation() { $last = Config::get('poco', 'last_federation_discovery'); if ($last) { $next = $last + (24 * 60 * 60); if ($next > time()) { return; } } // Discover Friendica, Hubzilla and Diaspora servers $serverdata = Network::fetchUrl("http://the-federation.info/pods.json"); if (!empty($serverdata)) { $servers = json_decode($serverdata, true); if (!empty($servers['pods'])) { foreach ($servers['pods'] as $server) { Worker::add(PRIORITY_LOW, "DiscoverPoCo", "server", "https://" . $server['host']); } } } // Disvover Mastodon servers if (!Config::get('system', 'ostatus_disabled')) { $accesstoken = Config::get('system', 'instances_social_key'); if (!empty($accesstoken)) { $api = 'https://instances.social/api/1.0/instances/list?count=0'; $header = ['Authorization: Bearer '.$accesstoken]; $serverdata = Network::curl($api, false, $redirects, ['headers' => $header]); if ($serverdata['success']) { $servers = json_decode($serverdata['body'], true); foreach ($servers['instances'] as $server) { $url = (is_null($server['https_score']) ? 'http' : 'https') . '://' . $server['name']; Worker::add(PRIORITY_LOW, "DiscoverPoCo", "server", $url); } } } } // Currently disabled, since the service isn't available anymore. // It is not removed since I hope that there will be a successor. // Discover GNU Social Servers. //if (!Config::get('system','ostatus_disabled')) { // $serverdata = "http://gstools.org/api/get_open_instances/"; // $result = Network::curl($serverdata); // if ($result["success"]) { // $servers = json_decode($result["body"], true); // foreach($servers['data'] as $server) // self::checkServer($server['instance_address']); // } //} Config::set('poco', 'last_federation_discovery', time()); } public static function discoverSingleServer($id) { $r = q("SELECT `poco`, `nurl`, `url`, `network` FROM `gserver` WHERE `id` = %d", intval($id)); if (!DBA::isResult($r)) { return false; } $server = $r[0]; // Discover new servers out there (Works from Friendica version 3.5.2) self::fetchServerlist($server["poco"]); // Fetch all users from the other server $url = $server["poco"] . "/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation"; logger("Fetch all users from the server " . $server["url"], LOGGER_DEBUG); $retdata = Network::curl($url); if ($retdata["success"] && !empty($retdata["body"])) { $data = json_decode($retdata["body"], true); if (!empty($data)) { self::discoverServer($data, 2); } if (Config::get('system', 'poco_discovery') > 1) { $timeframe = Config::get('system', 'poco_discovery_since'); if ($timeframe == 0) { $timeframe = 30; } $updatedSince = date(DateTimeFormat::MYSQL, time() - $timeframe * 86400); // Fetch all global contacts from the other server (Not working with Redmatrix and Friendica versions before 3.3) $url = $server["poco"]."/@global?updatedSince=".$updatedSince."&fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation"; $success = false; $retdata = Network::curl($url); if ($retdata["success"] && !empty($retdata["body"])) { logger("Fetch all global contacts from the server " . $server["nurl"], LOGGER_DEBUG); $data = json_decode($retdata["body"], true); if (!empty($data)) { $success = self::discoverServer($data); } } if (!$success && (Config::get('system', 'poco_discovery') > 2)) { logger("Fetch contacts from users of the server " . $server["nurl"], LOGGER_DEBUG); self::discoverServerUsers($data, $server); } } $fields = ['last_poco_query' => DateTimeFormat::utcNow()]; DBA::update('gserver', $fields, ['nurl' => $server["nurl"]]); return true; } else { // If the server hadn't replied correctly, then force a sanity check self::checkServer($server["url"], $server["network"], true); // If we couldn't reach the server, we will try it some time later $fields = ['last_poco_query' => DateTimeFormat::utcNow()]; DBA::update('gserver', $fields, ['nurl' => $server["nurl"]]); return false; } } public static function discover($complete = false) { // Update the server list self::discoverFederation(); $no_of_queries = 5; $requery_days = intval(Config::get('system', 'poco_requery_days')); if ($requery_days == 0) { $requery_days = 7; } $last_update = date('c', time() - (60 * 60 * 24 * $requery_days)); $gservers = q("SELECT `id`, `url`, `nurl`, `network` FROM `gserver` WHERE `last_contact` >= `last_failure` AND `poco` != '' AND `last_poco_query` < '%s' ORDER BY RAND()", DBA::escape($last_update) ); if (DBA::isResult($gservers)) { foreach ($gservers as $gserver) { if (!self::checkServer($gserver['url'], $gserver['network'])) { // The server is not reachable? Okay, then we will try it later $fields = ['last_poco_query' => DateTimeFormat::utcNow()]; DBA::update('gserver', $fields, ['nurl' => $gserver['nurl']]); continue; } logger('Update directory from server ' . $gserver['url'] . ' with ID ' . $gserver['id'], LOGGER_DEBUG); Worker::add(PRIORITY_LOW, 'DiscoverPoCo', 'update_server_directory', (int) $gserver['id']); if (!$complete && ( --$no_of_queries == 0)) { break; } } } } private static function discoverServerUsers(array $data, array $server) { if (!isset($data['entry'])) { return; } foreach ($data['entry'] as $entry) { $username = ''; if (isset($entry['urls'])) { foreach ($entry['urls'] as $url) { if ($url['type'] == 'profile') { $profile_url = $url['value']; $path_array = explode('/', parse_url($profile_url, PHP_URL_PATH)); $username = end($path_array); } } } if ($username != '') { logger('Fetch contacts for the user ' . $username . ' from the server ' . $server['nurl'], LOGGER_DEBUG); // Fetch all contacts from a given user from the other server $url = $server['poco'] . '/' . $username . '/?fields=displayName,urls,photos,updated,network,aboutMe,currentLocation,tags,gender,contactType,generation'; $retdata = Network::curl($url); if (!empty($retdata['success'])) { $data = json_decode($retdata["body"], true); if (!empty($data)) { self::discoverServer($data, 3); } } } } } private static function discoverServer(array $data, $default_generation = 0) { if (empty($data['entry'])) { return false; } $success = false; foreach ($data['entry'] as $entry) { $profile_url = ''; $profile_photo = ''; $connect_url = ''; $name = ''; $network = ''; $updated = NULL_DATE; $location = ''; $about = ''; $keywords = ''; $gender = ''; $contact_type = -1; $generation = $default_generation; if (!empty($entry['displayName'])) { $name = $entry['displayName']; } if (isset($entry['urls'])) { foreach ($entry['urls'] as $url) { if ($url['type'] == 'profile') { $profile_url = $url['value']; continue; } if ($url['type'] == 'webfinger') { $connect_url = str_replace('acct:' , '', $url['value']); continue; } } } if (isset($entry['photos'])) { foreach ($entry['photos'] as $photo) { if ($photo['type'] == 'profile') { $profile_photo = $photo['value']; continue; } } } if (isset($entry['updated'])) { $updated = date(DateTimeFormat::MYSQL, strtotime($entry['updated'])); } if (isset($entry['network'])) { $network = $entry['network']; } if (isset($entry['currentLocation'])) { $location = $entry['currentLocation']; } if (isset($entry['aboutMe'])) { $about = HTML::toBBCode($entry['aboutMe']); } if (isset($entry['gender'])) { $gender = $entry['gender']; } if (isset($entry['generation']) && ($entry['generation'] > 0)) { $generation = ++$entry['generation']; } if (isset($entry['contactType']) && ($entry['contactType'] >= 0)) { $contact_type = $entry['contactType']; } if (isset($entry['tags'])) { foreach ($entry['tags'] as $tag) { $keywords = implode(", ", $tag); } } if ($generation > 0) { $success = true; logger("Store profile ".$profile_url, LOGGER_DEBUG); $gcontact = ["url" => $profile_url, "name" => $name, "network" => $network, "photo" => $profile_photo, "about" => $about, "location" => $location, "gender" => $gender, "keywords" => $keywords, "connect" => $connect_url, "updated" => $updated, "contact-type" => $contact_type, "generation" => $generation]; try { $gcontact = GContact::sanitize($gcontact); GContact::update($gcontact); } catch (Exception $e) { logger($e->getMessage(), LOGGER_DEBUG); } logger("Done for profile ".$profile_url, LOGGER_DEBUG); } } return $success; } }