1300 lines
39 KiB
PHP
1300 lines
39 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2020, Friendica
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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namespace Friendica\Model;
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use DOMDocument;
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use DOMXPath;
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use Exception;
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use Friendica\Core\Logger;
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use Friendica\Core\Protocol;
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use Friendica\Core\System;
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use Friendica\Core\Search;
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use Friendica\Database\DBA;
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use Friendica\DI;
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use Friendica\Network\Probe;
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use Friendica\Protocol\ActivityPub;
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use Friendica\Protocol\PortableContact;
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use Friendica\Util\DateTimeFormat;
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use Friendica\Util\Network;
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use Friendica\Util\Strings;
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/**
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* This class handles GlobalContact related functions
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*/
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class GContact
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{
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/**
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* Search global contact table by nick or name
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*
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* @param string $search Name or nick
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* @param string $mode Search mode (e.g. "community")
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*
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* @return array with search results
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
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*/
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public static function searchByName($search, $mode = '')
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{
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if (empty($search)) {
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return [];
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}
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// check supported networks
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if (DI::config()->get('system', 'diaspora_enabled')) {
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$diaspora = Protocol::DIASPORA;
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} else {
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$diaspora = Protocol::DFRN;
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}
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if (!DI::config()->get('system', 'ostatus_disabled')) {
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$ostatus = Protocol::OSTATUS;
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} else {
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$ostatus = Protocol::DFRN;
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}
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// check if we search only communities or every contact
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if ($mode === 'community') {
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$extra_sql = ' AND `community`';
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} else {
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$extra_sql = '';
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}
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$search .= '%';
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$results = DBA::p("SELECT `nurl` FROM `gcontact`
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WHERE NOT `hide` AND `network` IN (?, ?, ?, ?) AND
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((`last_contact` >= `last_failure`) OR (`updated` >= `last_failure`)) AND
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(`addr` LIKE ? OR `name` LIKE ? OR `nick` LIKE ?) $extra_sql
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GROUP BY `nurl` ORDER BY `nurl` DESC LIMIT 1000",
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Protocol::DFRN, Protocol::ACTIVITYPUB, $ostatus, $diaspora, $search, $search, $search
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);
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$gcontacts = [];
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while ($result = DBA::fetch($results)) {
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$urlparts = parse_url($result['nurl']);
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// Ignore results that look strange.
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// For historic reasons the gcontact table does contain some garbage.
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if (!empty($urlparts['query']) || !empty($urlparts['fragment'])) {
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continue;
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}
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$gcontacts[] = Contact::getDetailsByURL($result['nurl'], local_user());
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}
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return $gcontacts;
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}
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/**
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* Link the gcontact entry with user, contact and global contact
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*
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* @param integer $gcid Global contact ID
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* @param integer $uid User ID
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* @param integer $cid Contact ID
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* @param integer $zcid Global Contact ID
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* @return void
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* @throws Exception
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*/
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public static function link($gcid, $uid = 0, $cid = 0, $zcid = 0)
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{
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if ($gcid <= 0) {
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return;
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}
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$condition = ['cid' => $cid, 'uid' => $uid, 'gcid' => $gcid, 'zcid' => $zcid];
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DBA::update('glink', ['updated' => DateTimeFormat::utcNow()], $condition, true);
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}
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/**
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* Sanitize the given gcontact data
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*
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* Generation:
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* 0: No definition
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* 1: Profiles on this server
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* 2: Contacts of profiles on this server
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* 3: Contacts of contacts of profiles on this server
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* 4: ...
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*
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* @param array $gcontact array with gcontact data
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* @return array $gcontact
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* @throws Exception
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*/
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public static function sanitize($gcontact)
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{
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if (empty($gcontact['url'])) {
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throw new Exception('URL is empty');
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}
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$gcontact['server_url'] = $gcontact['server_url'] ?? '';
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$urlparts = parse_url($gcontact['url']);
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if (empty($urlparts['scheme'])) {
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throw new Exception('This (' . $gcontact['url'] . ") doesn't seem to be an url.");
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}
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if (in_array($urlparts['host'], ['twitter.com', 'identi.ca'])) {
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throw new Exception('Contact from a non federated network ignored. (' . $gcontact['url'] . ')');
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}
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// Don't store the statusnet connector as network
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// We can't simply set this to Protocol::OSTATUS since the connector could have fetched posts from friendica as well
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if ($gcontact['network'] == Protocol::STATUSNET) {
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$gcontact['network'] = '';
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}
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// Assure that there are no parameter fragments in the profile url
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if (empty($gcontact['*network']) || in_array($gcontact['network'], Protocol::FEDERATED)) {
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$gcontact['url'] = self::cleanContactUrl($gcontact['url']);
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}
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// The global contacts should contain the original picture, not the cached one
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if (($gcontact['generation'] != 1) && stristr(Strings::normaliseLink($gcontact['photo']), Strings::normaliseLink(DI::baseUrl() . '/photo/'))) {
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$gcontact['photo'] = '';
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}
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if (empty($gcontact['network'])) {
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$gcontact['network'] = '';
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$condition = ["`uid` = 0 AND `nurl` = ? AND `network` != '' AND `network` != ?",
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Strings::normaliseLink($gcontact['url']), Protocol::STATUSNET];
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$contact = DBA::selectFirst('contact', ['network'], $condition);
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if (DBA::isResult($contact)) {
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$gcontact['network'] = $contact['network'];
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}
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if (($gcontact['network'] == '') || ($gcontact['network'] == Protocol::OSTATUS)) {
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$condition = ["`uid` = 0 AND `alias` IN (?, ?) AND `network` != '' AND `network` != ?",
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$gcontact['url'], Strings::normaliseLink($gcontact['url']), Protocol::STATUSNET];
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$contact = DBA::selectFirst('contact', ['network'], $condition);
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if (DBA::isResult($contact)) {
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$gcontact['network'] = $contact['network'];
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}
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}
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}
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$fields = ['network', 'updated', 'server_url', 'url', 'addr'];
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$gcnt = DBA::selectFirst('gcontact', $fields, ['nurl' => Strings::normaliseLink($gcontact['url'])]);
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if (DBA::isResult($gcnt)) {
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if (!isset($gcontact['network']) && ($gcnt['network'] != Protocol::STATUSNET)) {
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$gcontact['network'] = $gcnt['network'];
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}
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if ($gcontact['updated'] <= DBA::NULL_DATETIME) {
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$gcontact['updated'] = $gcnt['updated'];
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}
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if (!isset($gcontact['server_url']) && (Strings::normaliseLink($gcnt['server_url']) != Strings::normaliseLink($gcnt['url']))) {
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$gcontact['server_url'] = $gcnt['server_url'];
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}
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if (!isset($gcontact['addr'])) {
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$gcontact['addr'] = $gcnt['addr'];
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}
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}
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if ((!isset($gcontact['network']) || !isset($gcontact['name']) || !isset($gcontact['addr']) || !isset($gcontact['photo']) || !isset($gcontact['server_url']))
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&& GServer::reachable($gcontact['url'], $gcontact['server_url'], $gcontact['network'], false)
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) {
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$data = Probe::uri($gcontact['url']);
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if ($data['network'] == Protocol::PHANTOM) {
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throw new Exception('Probing for URL ' . $gcontact['url'] . ' failed');
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}
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$orig_profile = $gcontact['url'];
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$gcontact['server_url'] = $data['baseurl'];
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$gcontact = array_merge($gcontact, $data);
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}
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if (!isset($gcontact['name']) || !isset($gcontact['photo'])) {
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throw new Exception('No name and photo for URL '.$gcontact['url']);
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}
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if (!in_array($gcontact['network'], Protocol::FEDERATED)) {
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throw new Exception('No federated network (' . $gcontact['network'] . ') detected for URL ' . $gcontact['url']);
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}
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if (empty($gcontact['server_url'])) {
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// We check the server url to be sure that it is a real one
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$server_url = self::getBasepath($gcontact['url']);
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// We are now sure that it is a correct URL. So we use it in the future
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if ($server_url != '') {
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$gcontact['server_url'] = $server_url;
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}
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}
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// The server URL doesn't seem to be valid, so we don't store it.
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if (!GServer::check($gcontact['server_url'], $gcontact['network'])) {
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$gcontact['server_url'] = '';
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}
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return $gcontact;
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}
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/**
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* @param integer $uid id
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* @param integer $cid id
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* @return integer
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* @throws Exception
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*/
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public static function countCommonFriends($uid, $cid)
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{
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$r = q(
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"SELECT count(*) as `total`
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FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
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WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
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((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR
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(`gcontact`.`updated` >= `gcontact`.`last_failure`))
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AND `gcontact`.`nurl` IN (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0 and id != %d) ",
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intval($cid),
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intval($uid),
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intval($uid),
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intval($cid)
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);
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if (DBA::isResult($r)) {
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return $r[0]['total'];
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}
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return 0;
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}
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/**
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* @param integer $uid id
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* @param integer $zcid zcid
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* @return integer
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* @throws Exception
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*/
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public static function countCommonFriendsZcid($uid, $zcid)
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{
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$r = q(
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"SELECT count(*) as `total`
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FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
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where `glink`.`zcid` = %d
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and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0) ",
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intval($zcid),
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intval($uid)
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);
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if (DBA::isResult($r)) {
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return $r[0]['total'];
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}
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return 0;
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}
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/**
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* @param integer $uid user
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* @param integer $cid cid
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* @param integer $start optional, default 0
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* @param integer $limit optional, default 9999
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* @param boolean $shuffle optional, default false
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* @return object
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* @throws Exception
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*/
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public static function commonFriends($uid, $cid, $start = 0, $limit = 9999, $shuffle = false)
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{
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if ($shuffle) {
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$sql_extra = " order by rand() ";
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} else {
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$sql_extra = " order by `gcontact`.`name` asc ";
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}
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$r = q(
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"SELECT `gcontact`.*, `contact`.`id` AS `cid`
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FROM `glink`
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INNER JOIN `gcontact` ON `glink`.`gcid` = `gcontact`.`id`
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INNER JOIN `contact` ON `gcontact`.`nurl` = `contact`.`nurl`
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WHERE `glink`.`cid` = %d and `glink`.`uid` = %d
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AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `contact`.`blocked` = 0
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AND `contact`.`hidden` = 0 AND `contact`.`id` != %d
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AND ((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
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$sql_extra LIMIT %d, %d",
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intval($cid),
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intval($uid),
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intval($uid),
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intval($cid),
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intval($start),
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intval($limit)
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);
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/// @TODO Check all calling-findings of this function if they properly use DBA::isResult()
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return $r;
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}
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/**
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* @param integer $uid user
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* @param integer $zcid zcid
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* @param integer $start optional, default 0
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* @param integer $limit optional, default 9999
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* @param boolean $shuffle optional, default false
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* @return object
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* @throws Exception
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*/
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public static function commonFriendsZcid($uid, $zcid, $start = 0, $limit = 9999, $shuffle = false)
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{
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if ($shuffle) {
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$sql_extra = " order by rand() ";
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} else {
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$sql_extra = " order by `gcontact`.`name` asc ";
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}
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$r = q(
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"SELECT `gcontact`.*
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FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
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where `glink`.`zcid` = %d
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and `gcontact`.`nurl` in (select nurl from contact where uid = %d and self = 0 and blocked = 0 and hidden = 0)
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$sql_extra limit %d, %d",
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intval($zcid),
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intval($uid),
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intval($start),
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intval($limit)
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);
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/// @TODO Check all calling-findings of this function if they properly use DBA::isResult()
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return $r;
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}
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/**
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* @param integer $uid user
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* @param integer $cid cid
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* @return integer
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* @throws Exception
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*/
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public static function countAllFriends($uid, $cid)
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{
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$r = q(
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"SELECT count(*) as `total`
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FROM `glink` INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
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where `glink`.`cid` = %d and `glink`.`uid` = %d AND
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((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))",
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intval($cid),
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intval($uid)
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);
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if (DBA::isResult($r)) {
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return $r[0]['total'];
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}
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return 0;
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}
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/**
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* @param integer $uid user
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* @param integer $cid cid
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* @param integer $start optional, default 0
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* @param integer $limit optional, default 80
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* @return array
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* @throws Exception
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*/
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public static function allFriends($uid, $cid, $start = 0, $limit = 80)
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{
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$r = q(
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"SELECT `gcontact`.*, `contact`.`id` AS `cid`
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FROM `glink`
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INNER JOIN `gcontact` on `glink`.`gcid` = `gcontact`.`id`
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LEFT JOIN `contact` ON `contact`.`nurl` = `gcontact`.`nurl` AND `contact`.`uid` = %d
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WHERE `glink`.`cid` = %d AND `glink`.`uid` = %d AND
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((`gcontact`.`last_contact` >= `gcontact`.`last_failure`) OR (`gcontact`.`updated` >= `gcontact`.`last_failure`))
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ORDER BY `gcontact`.`name` ASC LIMIT %d, %d ",
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intval($uid),
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intval($cid),
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intval($uid),
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intval($start),
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intval($limit)
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);
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/// @TODO Check all calling-findings of this function if they properly use DBA::isResult()
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return $r;
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}
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/**
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* @param int $uid user
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* @param integer $start optional, default 0
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* @param integer $limit optional, default 80
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* @return array
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
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*/
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public static function suggestionQuery($uid, $start = 0, $limit = 80)
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{
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if (!$uid) {
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return [];
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}
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$network = [Protocol::DFRN, Protocol::ACTIVITYPUB];
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if (DI::config()->get('system', 'diaspora_enabled')) {
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$network[] = Protocol::DIASPORA;
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}
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if (!DI::config()->get('system', 'ostatus_disabled')) {
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$network[] = Protocol::OSTATUS;
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}
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$sql_network = "'" . implode("', '", $network) . "'";
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/// @todo This query is really slow
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// By now we cache the data for five minutes
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$r = q(
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"SELECT count(glink.gcid) as `total`, gcontact.* from gcontact
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INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
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where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d )
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AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
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AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
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AND `gcontact`.`updated` >= '%s' AND NOT `gcontact`.`hide`
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AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
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AND `gcontact`.`network` IN (%s)
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GROUP BY `glink`.`gcid` ORDER BY `gcontact`.`updated` DESC,`total` DESC LIMIT %d, %d",
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intval($uid),
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intval($uid),
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intval($uid),
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intval($uid),
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DBA::NULL_DATETIME,
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$sql_network,
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intval($start),
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intval($limit)
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);
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if (DBA::isResult($r) && count($r) >= ($limit -1)) {
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return $r;
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}
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$r2 = q(
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"SELECT gcontact.* FROM gcontact
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INNER JOIN `glink` ON `glink`.`gcid` = `gcontact`.`id`
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WHERE `glink`.`uid` = 0 AND `glink`.`cid` = 0 AND `glink`.`zcid` = 0 AND NOT `gcontact`.`nurl` IN (SELECT `nurl` FROM `contact` WHERE `uid` = %d)
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AND NOT `gcontact`.`name` IN (SELECT `name` FROM `contact` WHERE `uid` = %d)
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AND NOT `gcontact`.`id` IN (SELECT `gcid` FROM `gcign` WHERE `uid` = %d)
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AND `gcontact`.`updated` >= '%s'
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AND `gcontact`.`last_contact` >= `gcontact`.`last_failure`
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AND `gcontact`.`network` IN (%s)
|
|
ORDER BY rand() LIMIT %d, %d",
|
|
intval($uid),
|
|
intval($uid),
|
|
intval($uid),
|
|
DBA::NULL_DATETIME,
|
|
$sql_network,
|
|
intval($start),
|
|
intval($limit)
|
|
);
|
|
|
|
$list = [];
|
|
foreach ($r2 as $suggestion) {
|
|
$list[$suggestion['nurl']] = $suggestion;
|
|
}
|
|
|
|
foreach ($r as $suggestion) {
|
|
$list[$suggestion['nurl']] = $suggestion;
|
|
}
|
|
|
|
while (sizeof($list) > ($limit)) {
|
|
array_pop($list);
|
|
}
|
|
|
|
return $list;
|
|
}
|
|
|
|
/**
|
|
* @return void
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
*/
|
|
public static function updateSuggestions()
|
|
{
|
|
$done = [];
|
|
|
|
/// @TODO Check if it is really neccessary to poll the own server
|
|
PortableContact::loadWorker(0, 0, 0, DI::baseUrl() . '/poco');
|
|
|
|
$done[] = DI::baseUrl() . '/poco';
|
|
|
|
if (strlen(DI::config()->get('system', 'directory'))) {
|
|
$x = Network::fetchUrl(Search::getGlobalDirectory() . '/pubsites');
|
|
if (!empty($x)) {
|
|
$j = json_decode($x);
|
|
if (!empty($j->entries)) {
|
|
foreach ($j->entries as $entry) {
|
|
GServer::check($entry->url);
|
|
|
|
$url = $entry->url . '/poco';
|
|
if (!in_array($url, $done)) {
|
|
PortableContact::loadWorker(0, 0, 0, $url);
|
|
$done[] = $url;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Query your contacts from Friendica and Redmatrix/Hubzilla for their contacts
|
|
$contacts = DBA::p("SELECT DISTINCT(`poco`) AS `poco` FROM `contact` WHERE `network` IN (?, ?)", Protocol::DFRN, Protocol::DIASPORA);
|
|
while ($contact = DBA::fetch($contacts)) {
|
|
$base = substr($contact['poco'], 0, strrpos($contact['poco'], '/'));
|
|
if (!in_array($base, $done)) {
|
|
PortableContact::loadWorker(0, 0, 0, $base);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes unwanted parts from a contact url
|
|
*
|
|
* @param string $url Contact url
|
|
*
|
|
* @return string Contact url with the wanted parts
|
|
* @throws Exception
|
|
*/
|
|
public static function cleanContactUrl($url)
|
|
{
|
|
$parts = parse_url($url);
|
|
|
|
if (empty($parts['scheme']) || empty($parts['host'])) {
|
|
return $url;
|
|
}
|
|
|
|
$new_url = $parts['scheme'] . '://' . $parts['host'];
|
|
|
|
if (!empty($parts['port'])) {
|
|
$new_url .= ':' . $parts['port'];
|
|
}
|
|
|
|
if (!empty($parts['path'])) {
|
|
$new_url .= $parts['path'];
|
|
}
|
|
|
|
if ($new_url != $url) {
|
|
Logger::info('Cleaned contact url', ['url' => $url, 'new_url' => $new_url, 'callstack' => System::callstack()]);
|
|
}
|
|
|
|
return $new_url;
|
|
}
|
|
|
|
/**
|
|
* Fetch the gcontact id, add an entry if not existed
|
|
*
|
|
* @param array $contact contact array
|
|
*
|
|
* @return bool|int Returns false if not found, integer if contact was found
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
* @throws \ImagickException
|
|
*/
|
|
public static function getId($contact)
|
|
{
|
|
$gcontact_id = 0;
|
|
|
|
if (empty($contact['network'])) {
|
|
Logger::notice('Empty network', ['url' => $contact['url'], 'callstack' => System::callstack()]);
|
|
return false;
|
|
}
|
|
|
|
if (in_array($contact['network'], [Protocol::PHANTOM])) {
|
|
Logger::notice('Invalid network', ['url' => $contact['url'], 'callstack' => System::callstack()]);
|
|
return false;
|
|
}
|
|
|
|
if ($contact['network'] == Protocol::STATUSNET) {
|
|
$contact['network'] = Protocol::OSTATUS;
|
|
}
|
|
|
|
// All new contacts are hidden by default
|
|
if (!isset($contact['hide'])) {
|
|
$contact['hide'] = true;
|
|
}
|
|
|
|
// Remove unwanted parts from the contact url (e.g. '?zrl=...')
|
|
if (in_array($contact['network'], Protocol::FEDERATED)) {
|
|
$contact['url'] = self::cleanContactUrl($contact['url']);
|
|
}
|
|
|
|
DBA::lock('gcontact');
|
|
$fields = ['id', 'last_contact', 'last_failure', 'network'];
|
|
$gcnt = DBA::selectFirst('gcontact', $fields, ['nurl' => Strings::normaliseLink($contact['url'])]);
|
|
if (DBA::isResult($gcnt)) {
|
|
$gcontact_id = $gcnt['id'];
|
|
} else {
|
|
$contact['location'] = $contact['location'] ?? '';
|
|
$contact['about'] = $contact['about'] ?? '';
|
|
$contact['generation'] = $contact['generation'] ?? 0;
|
|
|
|
$fields = ['name' => $contact['name'], 'nick' => $contact['nick'] ?? '', 'addr' => $contact['addr'] ?? '', 'network' => $contact['network'],
|
|
'url' => $contact['url'], 'nurl' => Strings::normaliseLink($contact['url']), 'photo' => $contact['photo'],
|
|
'created' => DateTimeFormat::utcNow(), 'updated' => DateTimeFormat::utcNow(), 'location' => $contact['location'],
|
|
'about' => $contact['about'], 'hide' => $contact['hide'], 'generation' => $contact['generation']];
|
|
|
|
DBA::insert('gcontact', $fields);
|
|
|
|
$condition = ['nurl' => Strings::normaliseLink($contact['url'])];
|
|
$cnt = DBA::selectFirst('gcontact', ['id', 'network'], $condition, ['order' => ['id']]);
|
|
if (DBA::isResult($cnt)) {
|
|
$gcontact_id = $cnt['id'];
|
|
}
|
|
}
|
|
DBA::unlock();
|
|
|
|
return $gcontact_id;
|
|
}
|
|
|
|
/**
|
|
* Updates the gcontact table from a given array
|
|
*
|
|
* @param array $contact contact array
|
|
*
|
|
* @return bool|int Returns false if not found, integer if contact was found
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
* @throws \ImagickException
|
|
*/
|
|
public static function update($contact)
|
|
{
|
|
// Check for invalid "contact-type" value
|
|
if (isset($contact['contact-type']) && (intval($contact['contact-type']) < 0)) {
|
|
$contact['contact-type'] = 0;
|
|
}
|
|
|
|
/// @todo update contact table as well
|
|
|
|
$gcontact_id = self::getId($contact);
|
|
|
|
if (!$gcontact_id) {
|
|
return false;
|
|
}
|
|
|
|
$public_contact = DBA::selectFirst('gcontact', [
|
|
'name', 'nick', 'photo', 'location', 'about', 'addr', 'generation', 'birthday', 'keywords',
|
|
'contact-type', 'hide', 'nsfw', 'network', 'alias', 'notify', 'server_url', 'connect', 'updated', 'url'
|
|
], ['id' => $gcontact_id]);
|
|
|
|
if (!DBA::isResult($public_contact)) {
|
|
return false;
|
|
}
|
|
|
|
// Get all field names
|
|
$fields = [];
|
|
foreach ($public_contact as $field => $data) {
|
|
$fields[$field] = $data;
|
|
}
|
|
|
|
unset($fields['url']);
|
|
unset($fields['updated']);
|
|
unset($fields['hide']);
|
|
|
|
// Bugfix: We had an error in the storing of keywords which lead to the "0"
|
|
// This value is still transmitted via poco.
|
|
if (isset($contact['keywords']) && ($contact['keywords'] == '0')) {
|
|
unset($contact['keywords']);
|
|
}
|
|
|
|
if (isset($public_contact['keywords']) && ($public_contact['keywords'] == '0')) {
|
|
$public_contact['keywords'] = '';
|
|
}
|
|
|
|
// assign all unassigned fields from the database entry
|
|
foreach ($fields as $field => $data) {
|
|
if (empty($contact[$field])) {
|
|
$contact[$field] = $public_contact[$field];
|
|
}
|
|
}
|
|
|
|
if (!isset($contact['hide'])) {
|
|
$contact['hide'] = $public_contact['hide'];
|
|
}
|
|
|
|
$fields['hide'] = $public_contact['hide'];
|
|
|
|
if ($contact['network'] == Protocol::STATUSNET) {
|
|
$contact['network'] = Protocol::OSTATUS;
|
|
}
|
|
|
|
if (!isset($contact['updated'])) {
|
|
$contact['updated'] = DateTimeFormat::utcNow();
|
|
}
|
|
|
|
if ($contact['network'] == Protocol::TWITTER) {
|
|
$contact['server_url'] = 'http://twitter.com';
|
|
}
|
|
|
|
if (empty($contact['server_url'])) {
|
|
$data = Probe::uri($contact['url']);
|
|
if ($data['network'] != Protocol::PHANTOM) {
|
|
$contact['server_url'] = $data['baseurl'];
|
|
}
|
|
} else {
|
|
$contact['server_url'] = Strings::normaliseLink($contact['server_url']);
|
|
}
|
|
|
|
if (empty($contact['addr']) && !empty($contact['server_url']) && !empty($contact['nick'])) {
|
|
$hostname = str_replace('http://', '', $contact['server_url']);
|
|
$contact['addr'] = $contact['nick'] . '@' . $hostname;
|
|
}
|
|
|
|
// Check if any field changed
|
|
$update = false;
|
|
unset($fields['generation']);
|
|
|
|
if ((($contact['generation'] > 0) && ($contact['generation'] <= $public_contact['generation'])) || ($public_contact['generation'] == 0)) {
|
|
foreach ($fields as $field => $data) {
|
|
if ($contact[$field] != $public_contact[$field]) {
|
|
Logger::debug('Difference found.', ['contact' => $contact['url'], 'field' => $field, 'new' => $contact[$field], 'old' => $public_contact[$field]]);
|
|
$update = true;
|
|
}
|
|
}
|
|
|
|
if ($contact['generation'] < $public_contact['generation']) {
|
|
Logger::debug('Difference found.', ['contact' => $contact['url'], 'field' => 'generation', 'new' => $contact['generation'], 'old' => $public_contact['generation']]);
|
|
$update = true;
|
|
}
|
|
}
|
|
|
|
if ($update) {
|
|
Logger::debug('Update gcontact.', ['contact' => $contact['url']]);
|
|
$condition = ["`nurl` = ? AND (`generation` = 0 OR `generation` >= ?)",
|
|
Strings::normaliseLink($contact['url']), $contact['generation']];
|
|
$contact['updated'] = DateTimeFormat::utc($contact['updated']);
|
|
|
|
$updated = [
|
|
'photo' => $contact['photo'], 'name' => $contact['name'],
|
|
'nick' => $contact['nick'], 'addr' => $contact['addr'],
|
|
'network' => $contact['network'], 'birthday' => $contact['birthday'],
|
|
'keywords' => $contact['keywords'],
|
|
'hide' => $contact['hide'], 'nsfw' => $contact['nsfw'],
|
|
'contact-type' => $contact['contact-type'], 'alias' => $contact['alias'],
|
|
'notify' => $contact['notify'], 'url' => $contact['url'],
|
|
'location' => $contact['location'], 'about' => $contact['about'],
|
|
'generation' => $contact['generation'], 'updated' => $contact['updated'],
|
|
'server_url' => $contact['server_url'], 'connect' => $contact['connect']
|
|
];
|
|
|
|
DBA::update('gcontact', $updated, $condition, $fields);
|
|
}
|
|
|
|
return $gcontact_id;
|
|
}
|
|
|
|
/**
|
|
* Set the last date that the contact had posted something
|
|
*
|
|
* @param string $data Probing result
|
|
* @param bool $force force updating
|
|
*/
|
|
public static function setLastUpdate(array $data, bool $force = false)
|
|
{
|
|
// Fetch the global contact
|
|
$gcontact = DBA::selectFirst('gcontact', ['created', 'updated', 'last_contact', 'last_failure'],
|
|
['nurl' => Strings::normaliseLink($data['url'])]);
|
|
if (!DBA::isResult($gcontact)) {
|
|
return;
|
|
}
|
|
|
|
if (!$force && !GServer::updateNeeded($gcontact['created'], $gcontact['updated'], $gcontact['last_failure'], $gcontact['last_contact'])) {
|
|
Logger::info("Don't update profile", ['url' => $data['url'], 'updated' => $gcontact['updated']]);
|
|
return;
|
|
}
|
|
|
|
if (self::updateFromNoScrape($data)) {
|
|
return;
|
|
}
|
|
|
|
if (!empty($data['outbox'])) {
|
|
self::updateFromOutbox($data['outbox'], $data);
|
|
} elseif (!empty($data['poll']) && ($data['network'] == Protocol::ACTIVITYPUB)) {
|
|
self::updateFromOutbox($data['poll'], $data);
|
|
} elseif (!empty($data['poll'])) {
|
|
self::updateFromFeed($data);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Update a global contact via the "noscrape" endpoint
|
|
*
|
|
* @param string $data Probing result
|
|
*
|
|
* @return bool 'true' if update was successful or the server was unreachable
|
|
*/
|
|
private static function updateFromNoScrape(array $data)
|
|
{
|
|
// Check the 'noscrape' endpoint when it is a Friendica server
|
|
$gserver = DBA::selectFirst('gserver', ['noscrape'], ["`nurl` = ? AND `noscrape` != ''",
|
|
Strings::normaliseLink($data['baseurl'])]);
|
|
if (!DBA::isResult($gserver)) {
|
|
return false;
|
|
}
|
|
|
|
$curlResult = Network::curl($gserver['noscrape'] . '/' . $data['nick']);
|
|
|
|
if ($curlResult->isSuccess() && !empty($curlResult->getBody())) {
|
|
$noscrape = json_decode($curlResult->getBody(), true);
|
|
if (!empty($noscrape) && !empty($noscrape['updated'])) {
|
|
$noscrape['updated'] = DateTimeFormat::utc($noscrape['updated'], DateTimeFormat::MYSQL);
|
|
$fields = ['last_contact' => DateTimeFormat::utcNow(), 'updated' => $noscrape['updated']];
|
|
DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
|
|
return true;
|
|
}
|
|
} elseif ($curlResult->isTimeout()) {
|
|
// On a timeout return the existing value, but mark the contact as failure
|
|
$fields = ['last_failure' => DateTimeFormat::utcNow()];
|
|
DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Update a global contact via an ActivityPub Outbox
|
|
*
|
|
* @param string $feed
|
|
* @param array $data Probing result
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
*/
|
|
private static function updateFromOutbox(string $feed, array $data)
|
|
{
|
|
$outbox = ActivityPub::fetchContent($feed);
|
|
if (empty($outbox)) {
|
|
return;
|
|
}
|
|
|
|
if (!empty($outbox['orderedItems'])) {
|
|
$items = $outbox['orderedItems'];
|
|
} elseif (!empty($outbox['first']['orderedItems'])) {
|
|
$items = $outbox['first']['orderedItems'];
|
|
} elseif (!empty($outbox['first']['href'])) {
|
|
self::updateFromOutbox($outbox['first']['href'], $data);
|
|
return;
|
|
} elseif (!empty($outbox['first'])) {
|
|
if (is_string($outbox['first'])) {
|
|
self::updateFromOutbox($outbox['first'], $data);
|
|
} else {
|
|
Logger::warning('Unexpected data', ['outbox' => $outbox]);
|
|
}
|
|
return;
|
|
} else {
|
|
$items = [];
|
|
}
|
|
|
|
$last_updated = '';
|
|
foreach ($items as $activity) {
|
|
if (!empty($activity['published'])) {
|
|
$published = DateTimeFormat::utc($activity['published']);
|
|
} elseif (!empty($activity['object']['published'])) {
|
|
$published = DateTimeFormat::utc($activity['object']['published']);
|
|
} else {
|
|
continue;
|
|
}
|
|
|
|
if ($last_updated < $published) {
|
|
$last_updated = $published;
|
|
}
|
|
}
|
|
|
|
if (empty($last_updated)) {
|
|
return;
|
|
}
|
|
|
|
$fields = ['last_contact' => DateTimeFormat::utcNow(), 'updated' => $last_updated];
|
|
DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
|
|
}
|
|
|
|
/**
|
|
* Update a global contact via an XML feed
|
|
*
|
|
* @param string $data Probing result
|
|
*/
|
|
private static function updateFromFeed(array $data)
|
|
{
|
|
// Search for the newest entry in the feed
|
|
$curlResult = Network::curl($data['poll']);
|
|
if (!$curlResult->isSuccess()) {
|
|
$fields = ['last_failure' => DateTimeFormat::utcNow()];
|
|
DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
|
|
|
|
Logger::info("Profile wasn't reachable (no feed)", ['url' => $data['url']]);
|
|
return;
|
|
}
|
|
|
|
$doc = new DOMDocument();
|
|
@$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);
|
|
$published = !empty($published_item->nodeValue) ? DateTimeFormat::utc($published_item->nodeValue) : null;
|
|
$updated = !empty($updated_item->nodeValue) ? DateTimeFormat::utc($updated_item->nodeValue) : null;
|
|
|
|
if (empty($published) || empty($updated)) {
|
|
Logger::notice('Invalid entry for XPath.', ['entry' => $entry, 'url' => $data['url']]);
|
|
continue;
|
|
}
|
|
|
|
if ($last_updated < $published) {
|
|
$last_updated = $published;
|
|
}
|
|
|
|
if ($last_updated < $updated) {
|
|
$last_updated = $updated;
|
|
}
|
|
}
|
|
|
|
if (empty($last_updated)) {
|
|
return;
|
|
}
|
|
|
|
$fields = ['last_contact' => DateTimeFormat::utcNow(), 'updated' => $last_updated];
|
|
DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($data['url'])]);
|
|
}
|
|
/**
|
|
* Updates the gcontact entry from a given public contact id
|
|
*
|
|
* @param integer $cid contact id
|
|
* @return void
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
* @throws \ImagickException
|
|
*/
|
|
public static function updateFromPublicContactID($cid)
|
|
{
|
|
self::updateFromPublicContact(['id' => $cid]);
|
|
}
|
|
|
|
/**
|
|
* Updates the gcontact entry from a given public contact url
|
|
*
|
|
* @param string $url contact url
|
|
* @return integer gcontact id
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
* @throws \ImagickException
|
|
*/
|
|
public static function updateFromPublicContactURL($url)
|
|
{
|
|
return self::updateFromPublicContact(['nurl' => Strings::normaliseLink($url)]);
|
|
}
|
|
|
|
/**
|
|
* Helper function for updateFromPublicContactID and updateFromPublicContactURL
|
|
*
|
|
* @param array $condition contact condition
|
|
* @return integer gcontact id
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
* @throws \ImagickException
|
|
*/
|
|
private static function updateFromPublicContact($condition)
|
|
{
|
|
$fields = ['name', 'nick', 'url', 'nurl', 'location', 'about', 'keywords',
|
|
'bd', 'contact-type', 'network', 'addr', 'notify', 'alias', 'archive', 'term-date',
|
|
'created', 'updated', 'avatar', 'success_update', 'failure_update', 'forum', 'prv',
|
|
'baseurl', 'sensitive', 'unsearchable'];
|
|
|
|
$contact = DBA::selectFirst('contact', $fields, array_merge($condition, ['uid' => 0, 'network' => Protocol::FEDERATED]));
|
|
if (!DBA::isResult($contact)) {
|
|
return 0;
|
|
}
|
|
|
|
$fields = ['name', 'nick', 'url', 'nurl', 'location', 'about', 'keywords', 'generation',
|
|
'birthday', 'contact-type', 'network', 'addr', 'notify', 'alias', 'archived', 'archive_date',
|
|
'created', 'updated', 'photo', 'last_contact', 'last_failure', 'community', 'connect',
|
|
'server_url', 'nsfw', 'hide', 'id'];
|
|
|
|
$old_gcontact = DBA::selectFirst('gcontact', $fields, ['nurl' => $contact['nurl']]);
|
|
$do_insert = !DBA::isResult($old_gcontact);
|
|
if ($do_insert) {
|
|
$old_gcontact = [];
|
|
}
|
|
|
|
$gcontact = [];
|
|
|
|
// These fields are identical in both contact and gcontact
|
|
$fields = ['name', 'nick', 'url', 'nurl', 'location', 'about', 'keywords',
|
|
'contact-type', 'network', 'addr', 'notify', 'alias', 'created', 'updated'];
|
|
|
|
foreach ($fields as $field) {
|
|
$gcontact[$field] = $contact[$field];
|
|
}
|
|
|
|
// These fields are having different names but the same content
|
|
$gcontact['server_url'] = $contact['baseurl'] ?? ''; // "baseurl" can be null, "server_url" not
|
|
$gcontact['nsfw'] = $contact['sensitive'];
|
|
$gcontact['hide'] = $contact['unsearchable'];
|
|
$gcontact['archived'] = $contact['archive'];
|
|
$gcontact['archive_date'] = $contact['term-date'];
|
|
$gcontact['birthday'] = $contact['bd'];
|
|
$gcontact['photo'] = $contact['avatar'];
|
|
$gcontact['last_contact'] = $contact['success_update'];
|
|
$gcontact['last_failure'] = $contact['failure_update'];
|
|
$gcontact['community'] = ($contact['forum'] || $contact['prv']);
|
|
|
|
foreach (['last_contact', 'last_failure', 'updated'] as $field) {
|
|
if (!empty($old_gcontact[$field]) && ($old_gcontact[$field] >= $gcontact[$field])) {
|
|
unset($gcontact[$field]);
|
|
}
|
|
}
|
|
|
|
if (!$gcontact['archived']) {
|
|
$gcontact['archive_date'] = DBA::NULL_DATETIME;
|
|
}
|
|
|
|
if (!empty($old_gcontact['created']) && ($old_gcontact['created'] > DBA::NULL_DATETIME)
|
|
&& ($old_gcontact['created'] <= $gcontact['created'])) {
|
|
unset($gcontact['created']);
|
|
}
|
|
|
|
if (empty($gcontact['birthday']) && ($gcontact['birthday'] <= DBA::NULL_DATETIME)) {
|
|
unset($gcontact['birthday']);
|
|
}
|
|
|
|
if (empty($old_gcontact['generation']) || ($old_gcontact['generation'] > 2)) {
|
|
$gcontact['generation'] = 2; // We fetched the data directly from the other server
|
|
}
|
|
|
|
if (!$do_insert) {
|
|
DBA::update('gcontact', $gcontact, ['nurl' => $contact['nurl']], $old_gcontact);
|
|
return $old_gcontact['id'];
|
|
} elseif (!$gcontact['archived']) {
|
|
DBA::insert('gcontact', $gcontact);
|
|
return DBA::lastInsertId();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Updates the gcontact entry from probe
|
|
*
|
|
* @param string $url profile link
|
|
* @param boolean $force Optional forcing of network probing (otherwise we use the cached data)
|
|
*
|
|
* @return boolean 'true' when contact had been updated
|
|
*
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
* @throws \ImagickException
|
|
*/
|
|
public static function updateFromProbe($url, $force = false)
|
|
{
|
|
$data = Probe::uri($url, $force);
|
|
|
|
if (in_array($data['network'], [Protocol::PHANTOM])) {
|
|
$fields = ['last_failure' => DateTimeFormat::utcNow()];
|
|
DBA::update('gcontact', $fields, ['nurl' => Strings::normaliseLink($url)]);
|
|
Logger::info('Invalid network for contact', ['url' => $data['url'], 'callstack' => System::callstack()]);
|
|
return false;
|
|
}
|
|
|
|
$data['server_url'] = $data['baseurl'];
|
|
|
|
self::update($data);
|
|
|
|
// Set the date of the latest post
|
|
self::setLastUpdate($data, $force);
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Update the gcontact entry for a given user id
|
|
*
|
|
* @param int $uid User ID
|
|
* @return bool
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
* @throws \ImagickException
|
|
*/
|
|
public static function updateForUser($uid)
|
|
{
|
|
$profile = Profile::getByUID($uid);
|
|
if (empty($profile)) {
|
|
Logger::error('Cannot find profile', ['uid' => $uid]);
|
|
return false;
|
|
}
|
|
|
|
$user = User::getOwnerDataById($uid);
|
|
if (empty($user)) {
|
|
Logger::error('Cannot find user', ['uid' => $uid]);
|
|
return false;
|
|
}
|
|
|
|
$userdata = array_merge($profile, $user);
|
|
|
|
$location = Profile::formatLocation(
|
|
['locality' => $userdata['locality'], 'region' => $userdata['region'], 'country-name' => $userdata['country-name']]
|
|
);
|
|
|
|
$gcontact = ['name' => $userdata['name'], 'location' => $location, 'about' => $userdata['about'],
|
|
'keywords' => $userdata['pub_keywords'],
|
|
'birthday' => $userdata['dob'], 'photo' => $userdata['photo'],
|
|
"notify" => $userdata['notify'], 'url' => $userdata['url'],
|
|
"hide" => !$userdata['net-publish'],
|
|
'nick' => $userdata['nickname'], 'addr' => $userdata['addr'],
|
|
"connect" => $userdata['addr'], "server_url" => DI::baseUrl(),
|
|
"generation" => 1, 'network' => Protocol::DFRN];
|
|
|
|
self::update($gcontact);
|
|
}
|
|
|
|
/**
|
|
* Get the basepath for a given contact link
|
|
*
|
|
* @param string $url The gcontact link
|
|
* @param boolean $dont_update Don't update the contact
|
|
*
|
|
* @return string basepath
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
* @throws \ImagickException
|
|
*/
|
|
public static function getBasepath($url, $dont_update = false)
|
|
{
|
|
$gcontact = DBA::selectFirst('gcontact', ['server_url'], ['nurl' => Strings::normaliseLink($url)]);
|
|
if (!empty($gcontact['server_url'])) {
|
|
return $gcontact['server_url'];
|
|
} elseif ($dont_update) {
|
|
return '';
|
|
}
|
|
|
|
self::updateFromProbe($url, true);
|
|
|
|
// Fetch the result
|
|
$gcontact = DBA::selectFirst('gcontact', ['server_url'], ['nurl' => Strings::normaliseLink($url)]);
|
|
if (empty($gcontact['server_url'])) {
|
|
Logger::info('No baseurl for gcontact', ['url' => $url]);
|
|
return '';
|
|
}
|
|
|
|
Logger::info('Found baseurl for gcontact', ['url' => $url, 'baseurl' => $gcontact['server_url']]);
|
|
return $gcontact['server_url'];
|
|
}
|
|
|
|
/**
|
|
* Fetches users of given GNU Social server
|
|
*
|
|
* If the "Statistics" addon is enabled (See http://gstools.org/ for details) we query user data with this.
|
|
*
|
|
* @param string $server Server address
|
|
* @return bool
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
* @throws \ImagickException
|
|
*/
|
|
public static function fetchGsUsers($server)
|
|
{
|
|
Logger::info('Fetching users from GNU Social server', ['server' => $server]);
|
|
|
|
$url = $server . '/main/statistics';
|
|
|
|
$curlResult = Network::curl($url);
|
|
if (!$curlResult->isSuccess()) {
|
|
return false;
|
|
}
|
|
|
|
$statistics = json_decode($curlResult->getBody());
|
|
|
|
if (!empty($statistics->config->instance_address)) {
|
|
if (!empty($statistics->config->instance_with_ssl)) {
|
|
$server = 'https://';
|
|
} else {
|
|
$server = 'http://';
|
|
}
|
|
|
|
$server .= $statistics->config->instance_address;
|
|
|
|
$hostname = $statistics->config->instance_address;
|
|
} elseif (!empty($statistics->instance_address)) {
|
|
if (!empty($statistics->instance_with_ssl)) {
|
|
$server = 'https://';
|
|
} else {
|
|
$server = 'http://';
|
|
}
|
|
|
|
$server .= $statistics->instance_address;
|
|
|
|
$hostname = $statistics->instance_address;
|
|
}
|
|
|
|
if (!empty($statistics->users)) {
|
|
foreach ($statistics->users as $nick => $user) {
|
|
$profile_url = $server . '/' . $user->nickname;
|
|
|
|
$contact = ['url' => $profile_url,
|
|
'name' => $user->fullname,
|
|
'addr' => $user->nickname . '@' . $hostname,
|
|
'nick' => $user->nickname,
|
|
"network" => Protocol::OSTATUS,
|
|
'photo' => DI::baseUrl() . '/images/person-300.jpg'];
|
|
|
|
if (isset($user->bio)) {
|
|
$contact['about'] = $user->bio;
|
|
}
|
|
|
|
self::getId($contact);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Asking GNU Social server on a regular base for their user data
|
|
*
|
|
* @return void
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
* @throws \ImagickException
|
|
*/
|
|
public static function discoverGsUsers()
|
|
{
|
|
$requery_days = intval(DI::config()->get('system', 'poco_requery_days'));
|
|
|
|
$last_update = date("c", time() - (60 * 60 * 24 * $requery_days));
|
|
|
|
$r = DBA::select('gserver', ['nurl', 'url'], [
|
|
'`network` = ?
|
|
AND `last_contact` >= `last_failure`
|
|
AND `last_poco_query` < ?',
|
|
Protocol::OSTATUS,
|
|
$last_update
|
|
], [
|
|
'limit' => 5,
|
|
'order' => ['RAND()']
|
|
]);
|
|
|
|
if (!DBA::isResult($r)) {
|
|
return;
|
|
}
|
|
|
|
foreach ($r as $server) {
|
|
self::fetchGsUsers($server['url']);
|
|
DBA::update('gserver', ['last_poco_query' => DateTimeFormat::utcNow()], ['nurl' => $server['nurl']]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns a random, global contact of the current node
|
|
*
|
|
* @return string The profile URL
|
|
* @throws Exception
|
|
*/
|
|
public static function getRandomUrl()
|
|
{
|
|
$r = DBA::selectFirst('gcontact', ['url'], [
|
|
'`network` = ?
|
|
AND `last_contact` >= `last_failure`
|
|
AND `updated` > ?',
|
|
Protocol::DFRN,
|
|
DateTimeFormat::utc('now - 1 month'),
|
|
], ['order' => ['RAND()']]);
|
|
|
|
if (DBA::isResult($r)) {
|
|
return $r['url'];
|
|
}
|
|
|
|
return '';
|
|
}
|
|
}
|