forked from GNUsocial/gnu-social
1277 lines
36 KiB
PHP
1277 lines
36 KiB
PHP
<?php
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/**
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* StatusNet, the distributed open-source microblogging tool
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*
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* An activity
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*
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* PHP version 5
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*
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* LICENCE: 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 published by
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* the Free Software Foundation, either version 3 of the License, or
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* (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 <http://www.gnu.org/licenses/>.
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*
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* @category Feed
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @author Zach Copley <zach@status.net>
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* @copyright 2010 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPLv3
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* @link http://status.net/
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*/
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if (!defined('STATUSNET')) {
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exit(1);
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}
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class PoCoURL
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{
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const URLS = 'urls';
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const TYPE = 'type';
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const VALUE = 'value';
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const PRIMARY = 'primary';
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public $type;
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public $value;
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public $primary;
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function __construct($type, $value, $primary = false)
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{
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$this->type = $type;
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$this->value = $value;
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$this->primary = $primary;
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}
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function asString()
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{
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$xs = new XMLStringer(true);
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$xs->elementStart('poco:urls');
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$xs->element('poco:type', null, $this->type);
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$xs->element('poco:value', null, $this->value);
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if (!empty($this->primary)) {
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$xs->element('poco:primary', null, 'true');
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}
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$xs->elementEnd('poco:urls');
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return $xs->getString();
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}
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}
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class PoCoAddress
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{
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const ADDRESS = 'address';
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const FORMATTED = 'formatted';
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public $formatted;
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// @todo Other address fields
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function asString()
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{
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if (!empty($this->formatted)) {
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$xs = new XMLStringer(true);
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$xs->elementStart('poco:address');
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$xs->element('poco:formatted', null, $this->formatted);
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$xs->elementEnd('poco:address');
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return $xs->getString();
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}
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return null;
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}
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}
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class PoCo
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{
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const NS = 'http://portablecontacts.net/spec/1.0';
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const USERNAME = 'preferredUsername';
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const DISPLAYNAME = 'displayName';
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const NOTE = 'note';
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public $preferredUsername;
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public $displayName;
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public $note;
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public $address;
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public $urls = array();
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function __construct($element = null)
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{
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if (empty($element)) {
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return;
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}
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$this->preferredUsername = ActivityUtils::childContent(
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$element,
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self::USERNAME,
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self::NS
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);
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$this->displayName = ActivityUtils::childContent(
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$element,
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self::DISPLAYNAME,
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self::NS
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);
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$this->note = ActivityUtils::childContent(
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$element,
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self::NOTE,
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self::NS
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);
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$this->address = $this->_getAddress($element);
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$this->urls = $this->_getURLs($element);
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}
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private function _getURLs($element)
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{
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$urlEls = $element->getElementsByTagnameNS(self::NS, PoCoURL::URLS);
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$urls = array();
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foreach ($urlEls as $urlEl) {
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$type = ActivityUtils::childContent(
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$urlEl,
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PoCoURL::TYPE,
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PoCo::NS
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);
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$value = ActivityUtils::childContent(
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$urlEl,
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PoCoURL::VALUE,
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PoCo::NS
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);
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$primary = ActivityUtils::childContent(
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$urlEl,
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PoCoURL::PRIMARY,
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PoCo::NS
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);
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$isPrimary = false;
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if (isset($primary) && $primary == 'true') {
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$isPrimary = true;
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}
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// @todo check to make sure a primary hasn't already been added
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array_push($urls, new PoCoURL($type, $value, $isPrimary));
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}
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return $urls;
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}
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private function _getAddress($element)
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{
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$addressEl = ActivityUtils::child(
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$element,
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PoCoAddress::ADDRESS,
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PoCo::NS
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);
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if (!empty($addressEl)) {
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$formatted = ActivityUtils::childContent(
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$addressEl,
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PoCoAddress::FORMATTED,
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self::NS
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);
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if (!empty($formatted)) {
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$address = new PoCoAddress();
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$address->formatted = $formatted;
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return $address;
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}
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}
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return null;
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}
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function fromProfile($profile)
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{
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if (empty($profile)) {
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return null;
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}
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$poco = new PoCo();
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$poco->preferredUsername = $profile->nickname;
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$poco->displayName = $profile->getBestName();
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$poco->note = $profile->bio;
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$paddy = new PoCoAddress();
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$paddy->formatted = $profile->location;
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$poco->address = $paddy;
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if (!empty($profile->homepage)) {
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array_push(
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$poco->urls,
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new PoCoURL(
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'homepage',
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$profile->homepage,
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true
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)
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);
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}
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return $poco;
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}
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function fromGroup($group)
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{
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if (empty($group)) {
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return null;
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}
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$poco = new PoCo();
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$poco->preferredUsername = $group->nickname;
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$poco->displayName = $group->getBestName();
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$poco->note = $group->description;
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$paddy = new PoCoAddress();
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$paddy->formatted = $group->location;
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$poco->address = $paddy;
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if (!empty($group->homepage)) {
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array_push(
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$poco->urls,
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new PoCoURL(
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'homepage',
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$group->homepage,
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true
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)
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);
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}
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return $poco;
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}
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function getPrimaryURL()
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{
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foreach ($this->urls as $url) {
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if ($url->primary) {
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return $url;
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}
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}
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}
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function asString()
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{
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$xs = new XMLStringer(true);
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$xs->element(
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'poco:preferredUsername',
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null,
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$this->preferredUsername
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);
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$xs->element(
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'poco:displayName',
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null,
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$this->displayName
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);
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if (!empty($this->note)) {
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$xs->element('poco:note', null, $this->note);
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}
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if (!empty($this->address)) {
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$xs->raw($this->address->asString());
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}
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foreach ($this->urls as $url) {
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$xs->raw($url->asString());
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}
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return $xs->getString();
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}
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}
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/**
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* Utilities for turning DOMish things into Activityish things
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*
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* Some common functions that I didn't have the bandwidth to try to factor
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* into some kind of reasonable superclass, so just dumped here. Might
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* be useful to have an ActivityObject parent class or something.
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*
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* @category OStatus
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @copyright 2010 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPLv3
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* @link http://status.net/
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*/
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class ActivityUtils
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{
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const ATOM = 'http://www.w3.org/2005/Atom';
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const LINK = 'link';
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const REL = 'rel';
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const TYPE = 'type';
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const HREF = 'href';
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const CONTENT = 'content';
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const SRC = 'src';
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/**
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* Get the permalink for an Activity object
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*
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* @param DOMElement $element A DOM element
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*
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* @return string related link, if any
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*/
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static function getPermalink($element)
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{
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return self::getLink($element, 'alternate', 'text/html');
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}
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/**
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* Get the permalink for an Activity object
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*
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* @param DOMElement $element A DOM element
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*
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* @return string related link, if any
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*/
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static function getLink(DOMNode $element, $rel, $type=null)
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{
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$els = $element->childNodes;
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foreach ($els as $link) {
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if ($link->localName == self::LINK && $link->namespaceURI == self::ATOM) {
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$linkRel = $link->getAttribute(self::REL);
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$linkType = $link->getAttribute(self::TYPE);
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if ($linkRel == $rel &&
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(is_null($type) || $linkType == $type)) {
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return $link->getAttribute(self::HREF);
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}
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}
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}
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return null;
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}
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static function getLinks(DOMNode $element, $rel, $type=null)
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{
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$els = $element->childNodes;
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$out = array();
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foreach ($els as $link) {
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if ($link->localName == self::LINK && $link->namespaceURI == self::ATOM) {
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$linkRel = $link->getAttribute(self::REL);
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$linkType = $link->getAttribute(self::TYPE);
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if ($linkRel == $rel &&
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(is_null($type) || $linkType == $type)) {
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$out[] = $link;
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}
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}
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}
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return $out;
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}
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/**
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* Gets the first child element with the given tag
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*
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* @param DOMElement $element element to pick at
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* @param string $tag tag to look for
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* @param string $namespace Namespace to look under
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*
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* @return DOMElement found element or null
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*/
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static function child(DOMNode $element, $tag, $namespace=self::ATOM)
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{
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$els = $element->childNodes;
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if (empty($els) || $els->length == 0) {
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return null;
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} else {
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for ($i = 0; $i < $els->length; $i++) {
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$el = $els->item($i);
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if ($el->localName == $tag && $el->namespaceURI == $namespace) {
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return $el;
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}
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}
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}
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}
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/**
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* Grab the text content of a DOM element child of the current element
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*
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* @param DOMElement $element Element whose children we examine
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* @param string $tag Tag to look up
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* @param string $namespace Namespace to use, defaults to Atom
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*
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* @return string content of the child
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*/
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static function childContent(DOMNode $element, $tag, $namespace=self::ATOM)
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{
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$el = self::child($element, $tag, $namespace);
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if (empty($el)) {
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return null;
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} else {
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return $el->textContent;
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}
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}
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/**
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* Get the content of an atom:entry-like object
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*
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* @param DOMElement $element The element to examine.
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*
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* @return string unencoded HTML content of the element, like "This -< is <b>HTML</b>."
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*
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* @todo handle remote content
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* @todo handle embedded XML mime types
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* @todo handle base64-encoded non-XML and non-text mime types
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*/
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static function getContent($element)
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{
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$contentEl = ActivityUtils::child($element, self::CONTENT);
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if (!empty($contentEl)) {
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$src = $contentEl->getAttribute(self::SRC);
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if (!empty($src)) {
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throw new ClientException(_("Can't handle remote content yet."));
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}
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$type = $contentEl->getAttribute(self::TYPE);
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// slavishly following http://atompub.org/rfc4287.html#rfc.section.4.1.3.3
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if ($type == 'text') {
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return $contentEl->textContent;
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} else if ($type == 'html') {
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$text = $contentEl->textContent;
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return htmlspecialchars_decode($text, ENT_QUOTES);
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} else if ($type == 'xhtml') {
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$divEl = ActivityUtils::child($contentEl, 'div');
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if (empty($divEl)) {
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return null;
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}
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$doc = $divEl->ownerDocument;
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$text = '';
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$children = $divEl->childNodes;
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for ($i = 0; $i < $children->length; $i++) {
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$child = $children->item($i);
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$text .= $doc->saveXML($child);
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}
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return trim($text);
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} else if (in_array(array('text/xml', 'application/xml'), $type) ||
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preg_match('#(+|/)xml$#', $type)) {
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throw new ClientException(_("Can't handle embedded XML content yet."));
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} else if (strncasecmp($type, 'text/', 5)) {
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return $contentEl->textContent;
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} else {
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throw new ClientException(_("Can't handle embedded Base64 content yet."));
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}
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}
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}
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}
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// XXX: Arg! This wouldn't be necessary if we used Avatars conistently
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class AvatarLink
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{
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public $url;
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public $type;
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public $size;
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public $width;
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public $height;
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function __construct($element=null)
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{
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if ($element) {
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// @fixme use correct namespaces
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$this->url = $element->getAttribute('href');
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$this->type = $element->getAttribute('type');
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$width = $element->getAttribute('media:width');
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if ($width != null) {
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$this->width = intval($width);
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}
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$height = $element->getAttribute('media:height');
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if ($height != null) {
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$this->height = intval($height);
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}
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}
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}
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static function fromAvatar($avatar)
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{
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if (empty($avatar)) {
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return null;
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}
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$alink = new AvatarLink();
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$alink->type = $avatar->mediatype;
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$alink->height = $avatar->height;
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$alink->width = $avatar->width;
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$alink->url = $avatar->displayUrl();
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return $alink;
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}
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static function fromFilename($filename, $size)
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{
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$alink = new AvatarLink();
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$alink->url = $filename;
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$alink->height = $size;
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if (!empty($filename)) {
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$alink->width = $size;
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$alink->type = self::mediatype($filename);
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} else {
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$alink->url = User_group::defaultLogo($size);
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$alink->type = 'image/png';
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}
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return $alink;
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}
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// yuck!
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static function mediatype($filename) {
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$ext = strtolower(end(explode('.', $filename)));
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if ($ext == 'jpeg') {
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$ext = 'jpg';
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}
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// hope we don't support any others
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$types = array('png', 'gif', 'jpg', 'jpeg');
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if (in_array($ext, $types)) {
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return 'image/' . $ext;
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}
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return null;
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}
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}
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/**
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* A noun-ish thing in the activity universe
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|
*
|
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* The activity streams spec talks about activity objects, while also having
|
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* a tag activity:object, which is in fact an activity object. Aaaaaah!
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*
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* This is just a thing in the activity universe. Can be the subject, object,
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* or indirect object (target!) of an activity verb. Rotten name, and I'm
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* propagating it. *sigh*
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|
*
|
|
* @category OStatus
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|
* @package StatusNet
|
|
* @author Evan Prodromou <evan@status.net>
|
|
* @copyright 2010 StatusNet, Inc.
|
|
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPLv3
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|
* @link http://status.net/
|
|
*/
|
|
|
|
class ActivityObject
|
|
{
|
|
const ARTICLE = 'http://activitystrea.ms/schema/1.0/article';
|
|
const BLOGENTRY = 'http://activitystrea.ms/schema/1.0/blog-entry';
|
|
const NOTE = 'http://activitystrea.ms/schema/1.0/note';
|
|
const STATUS = 'http://activitystrea.ms/schema/1.0/status';
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|
const FILE = 'http://activitystrea.ms/schema/1.0/file';
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|
const PHOTO = 'http://activitystrea.ms/schema/1.0/photo';
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|
const ALBUM = 'http://activitystrea.ms/schema/1.0/photo-album';
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|
const PLAYLIST = 'http://activitystrea.ms/schema/1.0/playlist';
|
|
const VIDEO = 'http://activitystrea.ms/schema/1.0/video';
|
|
const AUDIO = 'http://activitystrea.ms/schema/1.0/audio';
|
|
const BOOKMARK = 'http://activitystrea.ms/schema/1.0/bookmark';
|
|
const PERSON = 'http://activitystrea.ms/schema/1.0/person';
|
|
const GROUP = 'http://activitystrea.ms/schema/1.0/group';
|
|
const PLACE = 'http://activitystrea.ms/schema/1.0/place';
|
|
const COMMENT = 'http://activitystrea.ms/schema/1.0/comment';
|
|
// ^^^^^^^^^^ tea!
|
|
|
|
// Atom elements we snarf
|
|
|
|
const TITLE = 'title';
|
|
const SUMMARY = 'summary';
|
|
const ID = 'id';
|
|
const SOURCE = 'source';
|
|
|
|
const NAME = 'name';
|
|
const URI = 'uri';
|
|
const EMAIL = 'email';
|
|
|
|
public $element;
|
|
public $type;
|
|
public $id;
|
|
public $title;
|
|
public $summary;
|
|
public $content;
|
|
public $link;
|
|
public $source;
|
|
public $avatarLinks = array();
|
|
public $geopoint;
|
|
public $poco;
|
|
public $displayName;
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* This probably needs to be refactored
|
|
* to generate a local class (ActivityPerson, ActivityFile, ...)
|
|
* based on the object type.
|
|
*
|
|
* @param DOMElement $element DOM thing to turn into an Activity thing
|
|
*/
|
|
|
|
function __construct($element = null)
|
|
{
|
|
if (empty($element)) {
|
|
return;
|
|
}
|
|
|
|
$this->element = $element;
|
|
|
|
$this->geopoint = $this->_childContent(
|
|
$element,
|
|
ActivityContext::POINT,
|
|
ActivityContext::GEORSS
|
|
);
|
|
|
|
if ($element->tagName == 'author') {
|
|
|
|
$this->type = self::PERSON; // XXX: is this fair?
|
|
$this->title = $this->_childContent($element, self::NAME);
|
|
$this->id = $this->_childContent($element, self::URI);
|
|
|
|
if (empty($this->id)) {
|
|
$email = $this->_childContent($element, self::EMAIL);
|
|
if (!empty($email)) {
|
|
// XXX: acct: ?
|
|
$this->id = 'mailto:'.$email;
|
|
}
|
|
}
|
|
|
|
} else {
|
|
|
|
$this->type = $this->_childContent($element, Activity::OBJECTTYPE,
|
|
Activity::SPEC);
|
|
|
|
if (empty($this->type)) {
|
|
$this->type = ActivityObject::NOTE;
|
|
}
|
|
|
|
$this->id = $this->_childContent($element, self::ID);
|
|
$this->title = $this->_childContent($element, self::TITLE);
|
|
$this->summary = $this->_childContent($element, self::SUMMARY);
|
|
|
|
$this->source = $this->_getSource($element);
|
|
|
|
$this->content = ActivityUtils::getContent($element);
|
|
|
|
$this->link = ActivityUtils::getPermalink($element);
|
|
|
|
}
|
|
|
|
// Some per-type attributes...
|
|
if ($this->type == self::PERSON || $this->type == self::GROUP) {
|
|
$this->displayName = $this->title;
|
|
|
|
$avatars = ActivityUtils::getLinks($element, 'avatar');
|
|
foreach ($avatars as $link) {
|
|
$this->avatarLinks[] = new AvatarLink($link);
|
|
}
|
|
|
|
$this->poco = new PoCo($element);
|
|
}
|
|
}
|
|
|
|
private function _childContent($element, $tag, $namespace=ActivityUtils::ATOM)
|
|
{
|
|
return ActivityUtils::childContent($element, $tag, $namespace);
|
|
}
|
|
|
|
// Try to get a unique id for the source feed
|
|
|
|
private function _getSource($element)
|
|
{
|
|
$sourceEl = ActivityUtils::child($element, 'source');
|
|
|
|
if (empty($sourceEl)) {
|
|
return null;
|
|
} else {
|
|
$href = ActivityUtils::getLink($sourceEl, 'self');
|
|
if (!empty($href)) {
|
|
return $href;
|
|
} else {
|
|
return ActivityUtils::childContent($sourceEl, 'id');
|
|
}
|
|
}
|
|
}
|
|
|
|
static function fromNotice($notice)
|
|
{
|
|
$object = new ActivityObject();
|
|
|
|
$object->type = ActivityObject::NOTE;
|
|
|
|
$object->id = $notice->uri;
|
|
$object->title = $notice->content;
|
|
$object->content = $notice->rendered;
|
|
$object->link = $notice->bestUrl();
|
|
|
|
return $object;
|
|
}
|
|
|
|
static function fromProfile($profile)
|
|
{
|
|
$object = new ActivityObject();
|
|
|
|
$object->type = ActivityObject::PERSON;
|
|
$object->id = $profile->getUri();
|
|
$object->title = $profile->getBestName();
|
|
$object->link = $profile->profileurl;
|
|
|
|
$orig = $profile->getOriginalAvatar();
|
|
|
|
if (!empty($orig)) {
|
|
$object->avatarLinks[] = AvatarLink::fromAvatar($orig);
|
|
}
|
|
|
|
$sizes = array(
|
|
AVATAR_PROFILE_SIZE,
|
|
AVATAR_STREAM_SIZE,
|
|
AVATAR_MINI_SIZE
|
|
);
|
|
|
|
foreach ($sizes as $size) {
|
|
|
|
$alink = null;
|
|
$avatar = $profile->getAvatar($size);
|
|
|
|
if (!empty($avatar)) {
|
|
$alink = AvatarLink::fromAvatar($avatar);
|
|
} else {
|
|
$alink = new AvatarLink();
|
|
$alink->type = 'image/png';
|
|
$alink->height = $size;
|
|
$alink->width = $size;
|
|
$alink->url = Avatar::defaultImage($size);
|
|
}
|
|
|
|
$object->avatarLinks[] = $alink;
|
|
}
|
|
|
|
if (isset($profile->lat) && isset($profile->lon)) {
|
|
$object->geopoint = (float)$profile->lat
|
|
. ' ' . (float)$profile->lon;
|
|
}
|
|
|
|
$object->poco = PoCo::fromProfile($profile);
|
|
|
|
return $object;
|
|
}
|
|
|
|
static function fromGroup($group)
|
|
{
|
|
$object = new ActivityObject();
|
|
|
|
$object->type = ActivityObject::GROUP;
|
|
$object->id = $group->getUri();
|
|
$object->title = $group->getBestName();
|
|
$object->link = $group->getUri();
|
|
|
|
$object->avatarLinks[] = AvatarLink::fromFilename(
|
|
$group->homepage_logo,
|
|
AVATAR_PROFILE_SIZE
|
|
);
|
|
|
|
$object->avatarLinks[] = AvatarLink::fromFilename(
|
|
$group->stream_logo,
|
|
AVATAR_STREAM_SIZE
|
|
);
|
|
|
|
$object->avatarLinks[] = AvatarLink::fromFilename(
|
|
$group->mini_logo,
|
|
AVATAR_MINI_SIZE
|
|
);
|
|
|
|
$object->poco = PoCo::fromGroup($group);
|
|
|
|
return $object;
|
|
}
|
|
|
|
|
|
function asString($tag='activity:object')
|
|
{
|
|
$xs = new XMLStringer(true);
|
|
|
|
$xs->elementStart($tag);
|
|
|
|
$xs->element('activity:object-type', null, $this->type);
|
|
|
|
$xs->element(self::ID, null, $this->id);
|
|
|
|
if (!empty($this->title)) {
|
|
$xs->element(self::TITLE, null, $this->title);
|
|
}
|
|
|
|
if (!empty($this->summary)) {
|
|
$xs->element(self::SUMMARY, null, $this->summary);
|
|
}
|
|
|
|
if (!empty($this->content)) {
|
|
// XXX: assuming HTML content here
|
|
$xs->element(ActivityUtils::CONTENT, array('type' => 'html'), $this->content);
|
|
}
|
|
|
|
if (!empty($this->link)) {
|
|
$xs->element(
|
|
'link',
|
|
array(
|
|
'rel' => 'alternate',
|
|
'type' => 'text/html',
|
|
'href' => $this->link
|
|
),
|
|
null
|
|
);
|
|
}
|
|
|
|
if ($this->type == ActivityObject::PERSON
|
|
|| $this->type == ActivityObject::GROUP) {
|
|
|
|
foreach ($this->avatarLinks as $avatar) {
|
|
$xs->element(
|
|
'link', array(
|
|
'rel' => 'avatar',
|
|
'type' => $avatar->type,
|
|
'media:width' => $avatar->width,
|
|
'media:height' => $avatar->height,
|
|
'href' => $avatar->url
|
|
),
|
|
null
|
|
);
|
|
}
|
|
}
|
|
|
|
if (!empty($this->geopoint)) {
|
|
$xs->element(
|
|
'georss:point',
|
|
null,
|
|
$this->geopoint
|
|
);
|
|
}
|
|
|
|
if (!empty($this->poco)) {
|
|
$xs->raw($this->poco->asString());
|
|
}
|
|
|
|
$xs->elementEnd($tag);
|
|
|
|
return $xs->getString();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Utility class to hold a bunch of constant defining default verb types
|
|
*
|
|
* @category OStatus
|
|
* @package StatusNet
|
|
* @author Evan Prodromou <evan@status.net>
|
|
* @copyright 2010 StatusNet, Inc.
|
|
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPLv3
|
|
* @link http://status.net/
|
|
*/
|
|
|
|
class ActivityVerb
|
|
{
|
|
const POST = 'http://activitystrea.ms/schema/1.0/post';
|
|
const SHARE = 'http://activitystrea.ms/schema/1.0/share';
|
|
const SAVE = 'http://activitystrea.ms/schema/1.0/save';
|
|
const FAVORITE = 'http://activitystrea.ms/schema/1.0/favorite';
|
|
const PLAY = 'http://activitystrea.ms/schema/1.0/play';
|
|
const FOLLOW = 'http://activitystrea.ms/schema/1.0/follow';
|
|
const FRIEND = 'http://activitystrea.ms/schema/1.0/make-friend';
|
|
const JOIN = 'http://activitystrea.ms/schema/1.0/join';
|
|
const TAG = 'http://activitystrea.ms/schema/1.0/tag';
|
|
|
|
// Custom OStatus verbs for the flipside until they're standardized
|
|
const DELETE = 'http://ostatus.org/schema/1.0/unfollow';
|
|
const UNFAVORITE = 'http://ostatus.org/schema/1.0/unfavorite';
|
|
const UNFOLLOW = 'http://ostatus.org/schema/1.0/unfollow';
|
|
const LEAVE = 'http://ostatus.org/schema/1.0/leave';
|
|
|
|
// For simple profile-update pings; no content to share.
|
|
const UPDATE_PROFILE = 'http://ostatus.org/schema/1.0/update-profile';
|
|
}
|
|
|
|
class ActivityContext
|
|
{
|
|
public $replyToID;
|
|
public $replyToUrl;
|
|
public $location;
|
|
public $attention = array();
|
|
public $conversation;
|
|
|
|
const THR = 'http://purl.org/syndication/thread/1.0';
|
|
const GEORSS = 'http://www.georss.org/georss';
|
|
const OSTATUS = 'http://ostatus.org/schema/1.0';
|
|
|
|
const INREPLYTO = 'in-reply-to';
|
|
const REF = 'ref';
|
|
const HREF = 'href';
|
|
|
|
const POINT = 'point';
|
|
|
|
const ATTENTION = 'ostatus:attention';
|
|
const CONVERSATION = 'ostatus:conversation';
|
|
|
|
function __construct($element)
|
|
{
|
|
$replyToEl = ActivityUtils::child($element, self::INREPLYTO, self::THR);
|
|
|
|
if (!empty($replyToEl)) {
|
|
$this->replyToID = $replyToEl->getAttribute(self::REF);
|
|
$this->replyToUrl = $replyToEl->getAttribute(self::HREF);
|
|
}
|
|
|
|
$this->location = $this->getLocation($element);
|
|
|
|
$this->conversation = ActivityUtils::getLink($element, self::CONVERSATION);
|
|
|
|
// Multiple attention links allowed
|
|
|
|
$links = $element->getElementsByTagNameNS(ActivityUtils::ATOM, ActivityUtils::LINK);
|
|
|
|
for ($i = 0; $i < $links->length; $i++) {
|
|
|
|
$link = $links->item($i);
|
|
|
|
$linkRel = $link->getAttribute(ActivityUtils::REL);
|
|
|
|
if ($linkRel == self::ATTENTION) {
|
|
$this->attention[] = $link->getAttribute(self::HREF);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Parse location given as a GeoRSS-simple point, if provided.
|
|
* http://www.georss.org/simple
|
|
*
|
|
* @param feed item $entry
|
|
* @return mixed Location or false
|
|
*/
|
|
function getLocation($dom)
|
|
{
|
|
$points = $dom->getElementsByTagNameNS(self::GEORSS, self::POINT);
|
|
|
|
for ($i = 0; $i < $points->length; $i++) {
|
|
$point = $points->item($i)->textContent;
|
|
return self::locationFromPoint($point);
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
// XXX: Move to ActivityUtils or Location?
|
|
static function locationFromPoint($point)
|
|
{
|
|
$point = str_replace(',', ' ', $point); // per spec "treat commas as whitespace"
|
|
$point = preg_replace('/\s+/', ' ', $point);
|
|
$point = trim($point);
|
|
$coords = explode(' ', $point);
|
|
if (count($coords) == 2) {
|
|
list($lat, $lon) = $coords;
|
|
if (is_numeric($lat) && is_numeric($lon)) {
|
|
common_log(LOG_INFO, "Looking up location for $lat $lon from georss point");
|
|
return Location::fromLatLon($lat, $lon);
|
|
}
|
|
}
|
|
common_log(LOG_ERR, "Ignoring bogus georss:point value $point");
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* An activity in the ActivityStrea.ms world
|
|
*
|
|
* An activity is kind of like a sentence: someone did something
|
|
* to something else.
|
|
*
|
|
* 'someone' is the 'actor'; 'did something' is the verb;
|
|
* 'something else' is the object.
|
|
*
|
|
* @category OStatus
|
|
* @package StatusNet
|
|
* @author Evan Prodromou <evan@status.net>
|
|
* @copyright 2010 StatusNet, Inc.
|
|
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPLv3
|
|
* @link http://status.net/
|
|
*/
|
|
|
|
class Activity
|
|
{
|
|
const SPEC = 'http://activitystrea.ms/spec/1.0/';
|
|
const SCHEMA = 'http://activitystrea.ms/schema/1.0/';
|
|
|
|
const VERB = 'verb';
|
|
const OBJECT = 'object';
|
|
const ACTOR = 'actor';
|
|
const SUBJECT = 'subject';
|
|
const OBJECTTYPE = 'object-type';
|
|
const CONTEXT = 'context';
|
|
const TARGET = 'target';
|
|
|
|
const ATOM = 'http://www.w3.org/2005/Atom';
|
|
|
|
const AUTHOR = 'author';
|
|
const PUBLISHED = 'published';
|
|
const UPDATED = 'updated';
|
|
|
|
public $actor; // an ActivityObject
|
|
public $verb; // a string (the URL)
|
|
public $object; // an ActivityObject
|
|
public $target; // an ActivityObject
|
|
public $context; // an ActivityObject
|
|
public $time; // Time of the activity
|
|
public $link; // an ActivityObject
|
|
public $entry; // the source entry
|
|
public $feed; // the source feed
|
|
|
|
public $summary; // summary of activity
|
|
public $content; // HTML content of activity
|
|
public $id; // ID of the activity
|
|
public $title; // title of the activity
|
|
public $categories = array(); // list of AtomCategory objects
|
|
public $enclosures = array(); // list of enclosure URL references
|
|
|
|
/**
|
|
* Turns a regular old Atom <entry> into a magical activity
|
|
*
|
|
* @param DOMElement $entry Atom entry to poke at
|
|
* @param DOMElement $feed Atom feed, for context
|
|
*/
|
|
|
|
function __construct($entry = null, $feed = null)
|
|
{
|
|
if (is_null($entry)) {
|
|
return;
|
|
}
|
|
|
|
$this->entry = $entry;
|
|
$this->feed = $feed;
|
|
|
|
$pubEl = $this->_child($entry, self::PUBLISHED, self::ATOM);
|
|
|
|
if (!empty($pubEl)) {
|
|
$this->time = strtotime($pubEl->textContent);
|
|
} else {
|
|
// XXX technically an error; being liberal. Good idea...?
|
|
$updateEl = $this->_child($entry, self::UPDATED, self::ATOM);
|
|
if (!empty($updateEl)) {
|
|
$this->time = strtotime($updateEl->textContent);
|
|
} else {
|
|
$this->time = null;
|
|
}
|
|
}
|
|
|
|
$this->link = ActivityUtils::getPermalink($entry);
|
|
|
|
$verbEl = $this->_child($entry, self::VERB);
|
|
|
|
if (!empty($verbEl)) {
|
|
$this->verb = trim($verbEl->textContent);
|
|
} else {
|
|
$this->verb = ActivityVerb::POST;
|
|
// XXX: do other implied stuff here
|
|
}
|
|
|
|
$objectEl = $this->_child($entry, self::OBJECT);
|
|
|
|
if (!empty($objectEl)) {
|
|
$this->object = new ActivityObject($objectEl);
|
|
} else {
|
|
$this->object = new ActivityObject($entry);
|
|
}
|
|
|
|
$actorEl = $this->_child($entry, self::ACTOR);
|
|
|
|
if (!empty($actorEl)) {
|
|
|
|
$this->actor = new ActivityObject($actorEl);
|
|
|
|
} else if (!empty($feed) &&
|
|
$subjectEl = $this->_child($feed, self::SUBJECT)) {
|
|
|
|
$this->actor = new ActivityObject($subjectEl);
|
|
|
|
} else if ($authorEl = $this->_child($entry, self::AUTHOR, self::ATOM)) {
|
|
|
|
$this->actor = new ActivityObject($authorEl);
|
|
|
|
} else if (!empty($feed) && $authorEl = $this->_child($feed, self::AUTHOR,
|
|
self::ATOM)) {
|
|
|
|
$this->actor = new ActivityObject($authorEl);
|
|
}
|
|
|
|
$contextEl = $this->_child($entry, self::CONTEXT);
|
|
|
|
if (!empty($contextEl)) {
|
|
$this->context = new ActivityContext($contextEl);
|
|
} else {
|
|
$this->context = new ActivityContext($entry);
|
|
}
|
|
|
|
$targetEl = $this->_child($entry, self::TARGET);
|
|
|
|
if (!empty($targetEl)) {
|
|
$this->target = new ActivityObject($targetEl);
|
|
}
|
|
|
|
$this->summary = ActivityUtils::childContent($entry, 'summary');
|
|
$this->id = ActivityUtils::childContent($entry, 'id');
|
|
$this->content = ActivityUtils::getContent($entry);
|
|
|
|
$catEls = $entry->getElementsByTagNameNS(self::ATOM, 'category');
|
|
if ($catEls) {
|
|
for ($i = 0; $i < $catEls->length; $i++) {
|
|
$catEl = $catEls->item($i);
|
|
$this->categories[] = new AtomCategory($catEl);
|
|
}
|
|
}
|
|
|
|
foreach (ActivityUtils::getLinks($entry, 'enclosure') as $link) {
|
|
$this->enclosures[] = $link->getAttribute('href');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns an Atom <entry> based on this activity
|
|
*
|
|
* @return DOMElement Atom entry
|
|
*/
|
|
|
|
function toAtomEntry()
|
|
{
|
|
return null;
|
|
}
|
|
|
|
function asString($namespace=false)
|
|
{
|
|
$xs = new XMLStringer(true);
|
|
|
|
if ($namespace) {
|
|
$attrs = array('xmlns' => 'http://www.w3.org/2005/Atom',
|
|
'xmlns:activity' => 'http://activitystrea.ms/spec/1.0/',
|
|
'xmlns:georss' => 'http://www.georss.org/georss',
|
|
'xmlns:ostatus' => 'http://ostatus.org/schema/1.0',
|
|
'xmlns:poco' => 'http://portablecontacts.net/spec/1.0',
|
|
'xmlns:media' => 'http://purl.org/syndication/atommedia');
|
|
} else {
|
|
$attrs = array();
|
|
}
|
|
|
|
$xs->elementStart('entry', $attrs);
|
|
|
|
$xs->element('id', null, $this->id);
|
|
$xs->element('title', null, $this->title);
|
|
$xs->element('published', null, common_date_iso8601($this->time));
|
|
$xs->element('content', array('type' => 'html'), $this->content);
|
|
|
|
if (!empty($this->summary)) {
|
|
$xs->element('summary', null, $this->summary);
|
|
}
|
|
|
|
if (!empty($this->link)) {
|
|
$xs->element('link', array('rel' => 'alternate',
|
|
'type' => 'text/html'),
|
|
$this->link);
|
|
}
|
|
|
|
// XXX: add context
|
|
|
|
$xs->elementStart('author');
|
|
$xs->element('uri', array(), $this->actor->id);
|
|
if ($this->actor->title) {
|
|
$xs->element('name', array(), $this->actor->title);
|
|
}
|
|
$xs->elementEnd('author');
|
|
$xs->raw($this->actor->asString('activity:actor'));
|
|
|
|
$xs->element('activity:verb', null, $this->verb);
|
|
|
|
if ($this->object) {
|
|
$xs->raw($this->object->asString());
|
|
}
|
|
|
|
if ($this->target) {
|
|
$xs->raw($this->target->asString('activity:target'));
|
|
}
|
|
|
|
foreach ($this->categories as $cat) {
|
|
$xs->raw($cat->asString());
|
|
}
|
|
|
|
$xs->elementEnd('entry');
|
|
|
|
return $xs->getString();
|
|
}
|
|
|
|
private function _child($element, $tag, $namespace=self::SPEC)
|
|
{
|
|
return ActivityUtils::child($element, $tag, $namespace);
|
|
}
|
|
}
|
|
|
|
class AtomCategory
|
|
{
|
|
public $term;
|
|
public $scheme;
|
|
public $label;
|
|
|
|
function __construct($element=null)
|
|
{
|
|
if ($element && $element->attributes) {
|
|
$this->term = $this->extract($element, 'term');
|
|
$this->scheme = $this->extract($element, 'scheme');
|
|
$this->label = $this->extract($element, 'label');
|
|
}
|
|
}
|
|
|
|
protected function extract($element, $attrib)
|
|
{
|
|
$node = $element->attributes->getNamedItemNS(Activity::ATOM, $attrib);
|
|
if ($node) {
|
|
return trim($node->textContent);
|
|
}
|
|
$node = $element->attributes->getNamedItem($attrib);
|
|
if ($node) {
|
|
return trim($node->textContent);
|
|
}
|
|
return null;
|
|
}
|
|
|
|
function asString()
|
|
{
|
|
$attribs = array();
|
|
if ($this->term !== null) {
|
|
$attribs['term'] = $this->term;
|
|
}
|
|
if ($this->scheme !== null) {
|
|
$attribs['scheme'] = $this->scheme;
|
|
}
|
|
if ($this->label !== null) {
|
|
$attribs['label'] = $this->label;
|
|
}
|
|
$xs = new XMLStringer();
|
|
$xs->element('category', $attribs);
|
|
return $xs->asString();
|
|
}
|
|
}
|