- public static function reachable($profile, $server = "", $network = "", $force = false)
- {
- if ($server == "") {
- $server = Contact::getBasepath($profile);
- }
-
- if ($server == "") {
- return true;
- }
-
- return GServer::check($server, $network, $force);
- }
-
- public static function alternateOStatusUrl($url)
- {
- return(preg_match("=https?://.+/user/\d+=ism", $url, $matches));
- }
-
- public static function lastUpdated($profile, $force = false)
- {
- $gcontacts = q(
- "SELECT * FROM `gcontact` WHERE `nurl` = '%s'",
- DBA::escape(Strings::normaliseLink($profile))
- );
-
- if (!DBA::isResult($gcontacts)) {
- return false;
- }
-
- $contact = ["url" => $profile];
-
- if ($gcontacts[0]["created"] <= DBA::NULL_DATETIME) {
- $contact['created'] = DateTimeFormat::utcNow();
- }
-
- $server_url = '';
- if ($force) {
- $server_url = Strings::normaliseLink(Contact::getBasepath($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"]))) {
- $server_url = Strings::normaliseLink(Contact::getBasepath($profile));
- }
-
- if (!in_array($gcontacts[0]["network"], [Protocol::DFRN, Protocol::DIASPORA, Protocol::FEED, Protocol::OSTATUS, ""])) {
- Logger::log("Profile ".$profile.": Network type ".$gcontacts[0]["network"]." can't be checked", Logger::DEBUG);
- return false;
- }
-
- if ($server_url != "") {
- if (!GServer::check($server_url, $gcontacts[0]["network"], $force)) {
- if ($force) {
- $fields = ['last_failure' => DateTimeFormat::utcNow()];
- DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($profile)]);
- }
-
- Logger::log("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])) {
- $server = q(
- "SELECT `network` FROM `gserver` WHERE `nurl` = '%s' AND `network` != ''",
- DBA::escape(Strings::normaliseLink($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
- $server = q("SELECT `noscrape`, `network` FROM `gserver` WHERE `nurl` = '%s' AND `noscrape` != ''", DBA::escape(Strings::normaliseLink($server_url)));
-
- if ($server) {
- $curlResult = Network::curl($server[0]["noscrape"]."/".$gcontacts[0]["nick"]);
-
- if ($curlResult->isSuccess() && ($curlResult->getBody() != "")) {
- $noscrape = json_decode($curlResult->getBody(), 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', $fields, ['nurl' => Strings::normaliseLink($profile)]);
-
- Logger::log("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"], $gcontacts[0]["last_contact"])) {
- Logger::log("Profile ".$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)
- && (Strings::normaliseLink($profile) == Strings::normaliseLink($data["alias"]))
- && (Strings::normaliseLink($profile) != Strings::normaliseLink($data["url"]))
- ) {
- // Delete the old entry
- DBA::delete('gcontact', ['nurl' => Strings::normaliseLink($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 $e) {
- Logger::log($e->getMessage(), Logger::DEBUG);
- }
-
- Logger::log("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', $fields, ['nurl' => Strings::normaliseLink($profile)]);
-
- Logger::log("Profile ".$profile." wasn't reachable (profile)", Logger::DEBUG);
- return false;
- }
-
- $contact = array_merge($contact, $data);
-
- $contact["server_url"] = $data["baseurl"];
-
- GContact::update($contact);
-
- $curlResult = Network::curl($data["poll"]);
-
- if (!$curlResult->isSuccess()) {
- $fields = ['last_failure' => DateTimeFormat::utcNow()];
- DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($profile)]);
-
- Logger::log("Profile ".$profile." wasn't reachable (no feed)", Logger::DEBUG);
- return false;
- }
-
- $doc = new DOMDocument();
- /// @TODO Avoid error supression here
- @$doc->loadXML($curlResult->getBody());
-
- $xpath = new DOMXPath($doc);
- $xpath->registerNamespace('atom', "http://www.w3.org/2005/Atom");
-
- $entries = $xpath->query('/atom:feed/atom:entry');
-
- $last_updated = "";
-
- foreach ($entries as $entry) {
- $published_item = $xpath->query('atom:published/text()', $entry)->item(0);
- $updated_item = $xpath->query('atom:updated/text()' , $entry)->item(0);
- $published = isset($published_item->nodeValue) ? DateTimeFormat::utc($published_item->nodeValue) : null;
- $updated = isset($updated_item->nodeValue) ? DateTimeFormat::utc($updated_item->nodeValue) : null;
-
- if (!isset($published) || !isset($updated)) {
- Logger::notice('Invalid entry for XPath.', ['entry' => $entry, 'profile' => $profile]);
- continue;
- }
-
- if ($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 = DBA::NULL_DATETIME;
- }
- }
-
- $fields = ['last_contact' => DateTimeFormat::utcNow()];
-
- if (!empty($last_updated)) {
- $fields['updated'] = $last_updated;
- }
-
- DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($profile)]);
-
- if (($gcontacts[0]["generation"] == 0)) {
- $fields = ['generation' => 9];
- DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($profile)]);
- }
-
- Logger::log("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;
- }
-