05e3768e6a
First steps to parsing RSS items as activities. RSS feeds don't seem to have enough data to make good remote profiles, but this may work with some "hints".
1509 lines
43 KiB
PHP
1509 lines
43 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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$xs->element('poco:formatted', null, common_xml_safe_str($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, common_xml_safe_str($this->note));
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}
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if (!empty($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 = $contentEl->getAttribute(self::TYPE);
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// slavishly following http://atompub.org/rfc4287.html#rfc.section.4.1.3.3
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if (empty($type) || $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($contentEl, 'div', 'http://www.w3.org/1999/xhtml');
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if (empty($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($text);
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} else if (in_array($type, array('text/xml', 'application/xml')) ||
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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*
|
|
*
|
|
* @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 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';
|
|
const FILE = 'http://activitystrea.ms/schema/1.0/file';
|
|
const PHOTO = 'http://activitystrea.ms/schema/1.0/photo';
|
|
const ALBUM = 'http://activitystrea.ms/schema/1.0/photo-album';
|
|
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') {
|
|
$this->_fromAuthor($element);
|
|
} else if ($element->tagName == 'item') {
|
|
$this->_fromRssItem($element);
|
|
} else {
|
|
$this->_fromAtomEntry($element);
|
|
}
|
|
|
|
// Some per-type attributes...
|
|
if ($this->type == self::PERSON || $this->type == self::GROUP) {
|
|
$this->displayName = $this->title;
|
|
|
|
$photos = ActivityUtils::getLinks($element, 'photo');
|
|
if (count($photos)) {
|
|
foreach ($photos as $link) {
|
|
$this->avatarLinks[] = new AvatarLink($link);
|
|
}
|
|
} else {
|
|
$avatars = ActivityUtils::getLinks($element, 'avatar');
|
|
foreach ($avatars as $link) {
|
|
$this->avatarLinks[] = new AvatarLink($link);
|
|
}
|
|
}
|
|
|
|
$this->poco = new PoCo($element);
|
|
}
|
|
}
|
|
|
|
private function _fromAuthor($element)
|
|
{
|
|
$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;
|
|
}
|
|
}
|
|
}
|
|
|
|
private function _fromAtomEntry($element)
|
|
{
|
|
$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);
|
|
}
|
|
|
|
// @fixme rationalize with Activity::_fromRssItem()
|
|
|
|
private function _fromRssItem($item)
|
|
{
|
|
$this->title = ActivityUtils::childContent($item, ActivityObject::TITLE, Activity::RSS);
|
|
|
|
$contentEl = ActivityUtils::child($item, ActivityUtils::CONTENT, Activity::CONTENTNS);
|
|
|
|
if (!empty($contentEl)) {
|
|
$this->content = htmlspecialchars_decode($contentEl->textContent, ENT_QUOTES);
|
|
} else {
|
|
$descriptionEl = ActivityUtils::child($item, Activity::DESCRIPTION, Activity::RSS);
|
|
if (!empty($descriptionEl)) {
|
|
$this->content = htmlspecialchars_decode($descriptionEl->textContent, ENT_QUOTES);
|
|
}
|
|
}
|
|
|
|
$this->link = ActivityUtils::childContent($item, ActivityUtils::LINK, Activity::RSS);
|
|
|
|
$guidEl = ActivityUtils::child($item, Activity::GUID, Activity::RSS);
|
|
|
|
if (!empty($guidEl)) {
|
|
$this->id = $guidEl->textContent;
|
|
|
|
if ($guidEl->hasAttribute('isPermaLink')) {
|
|
// overwrites <link>
|
|
$this->link = $this->id;
|
|
}
|
|
}
|
|
}
|
|
|
|
private function _childContent($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 $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 $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)) {
|
|
$xs->element(
|
|
self::TITLE,
|
|
null,
|
|
common_xml_safe_str($this->title)
|
|
);
|
|
}
|
|
|
|
if (!empty($this->summary)) {
|
|
$xs->element(
|
|
self::SUMMARY,
|
|
null,
|
|
common_xml_safe_str($this->summary)
|
|
);
|
|
}
|
|
|
|
if (!empty($this->content)) {
|
|
// XXX: assuming HTML content here
|
|
$xs->element(
|
|
ActivityUtils::CONTENT,
|
|
array('type' => 'html'),
|
|
common_xml_safe_str($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';
|
|
|
|
const RSS = null; // no namespace!
|
|
|
|
const PUBDATE = 'pubDate';
|
|
const DESCRIPTION = 'description';
|
|
const GUID = 'guid';
|
|
const SELF = 'self';
|
|
const IMAGE = 'image';
|
|
const URL = 'url';
|
|
|
|
const DC = 'http://purl.org/dc/elements/1.1/';
|
|
|
|
const CREATOR = 'creator';
|
|
|
|
const CONTENTNS = 'http://purl.org/rss/1.0/modules/content/';
|
|
|
|
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;
|
|
}
|
|
|
|
// Insist on a feed's root DOMElement; don't allow a DOMDocument
|
|
if ($feed instanceof DOMDocument) {
|
|
throw new ClientException(
|
|
_("Expecting a root feed element but got a whole XML document.")
|
|
);
|
|
}
|
|
|
|
$this->entry = $entry;
|
|
$this->feed = $feed;
|
|
|
|
if ($entry->namespaceURI == Activity::ATOM &&
|
|
$entry->localName == 'entry') {
|
|
$this->_fromAtomEntry($entry, $feed);
|
|
} else if ($entry->namespaceURI == Activity::RSS &&
|
|
$entry->localName == 'item') {
|
|
$this->_fromRssItem($entry, $feed);
|
|
} else {
|
|
throw new Exception("Unknown DOM element: {$entry->namespaceURI} {$entry->localName}");
|
|
}
|
|
}
|
|
|
|
function _fromAtomEntry($entry, $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[] = $link->getAttribute('href');
|
|
}
|
|
}
|
|
|
|
function _fromRssItem($item, $rss)
|
|
{
|
|
$verbEl = $this->_child($item, self::VERB);
|
|
|
|
if (!empty($verbEl)) {
|
|
$this->verb = trim($verbEl->textContent);
|
|
} else {
|
|
$this->verb = ActivityVerb::POST;
|
|
// XXX: do other implied stuff here
|
|
}
|
|
|
|
$pubDateEl = $this->_child($item, self::PUBDATE, self::RSS);
|
|
|
|
if (!empty($pubDateEl)) {
|
|
$this->time = strtotime($pubDateEl->textContent);
|
|
}
|
|
|
|
$authorEl = $this->_child($item, self::AUTHOR, self::RSS);
|
|
|
|
if (!empty($authorEl)) {
|
|
$this->actor = $this->_fromRssAuthor($authorEl);
|
|
} else {
|
|
$dcCreatorEl = $this->_child($item, self::CREATOR, self::DC);
|
|
if (!empty($dcCreatorEl)) {
|
|
$this->actor = $this->_fromDcCreator($dcCreatorEl);
|
|
} else if (!empty($rss)) {
|
|
$this->actor = $this->_fromRss($rss);
|
|
}
|
|
}
|
|
|
|
$this->title = ActivityUtils::childContent($item, ActivityObject::TITLE, self::RSS);
|
|
|
|
$contentEl = ActivityUtils::child($item, ActivityUtils::CONTENT, self::CONTENTNS);
|
|
|
|
if (!empty($contentEl)) {
|
|
$this->content = htmlspecialchars_decode($contentEl->textContent, ENT_QUOTES);
|
|
} else {
|
|
$descriptionEl = ActivityUtils::child($item, self::DESCRIPTION, self::RSS);
|
|
if (!empty($descriptionEl)) {
|
|
$this->content = htmlspecialchars_decode($descriptionEl->textContent, ENT_QUOTES);
|
|
}
|
|
}
|
|
|
|
$this->link = ActivityUtils::childContent($item, ActivityUtils::LINK, self::RSS);
|
|
|
|
// @fixme enclosures
|
|
// @fixme thumbnails... maybe
|
|
|
|
$guidEl = ActivityUtils::child($item, self::GUID, self::RSS);
|
|
|
|
if (!empty($guidEl)) {
|
|
$this->id = $guidEl->textContent;
|
|
|
|
if ($guidEl->hasAttribute('isPermaLink') && $guidEl->getAttribute('isPermaLink') != 'false') {
|
|
// overwrites <link>
|
|
$this->link = $this->id;
|
|
}
|
|
}
|
|
|
|
$this->object = new ActivityObject($item);
|
|
$this->context = new ActivityContext($item);
|
|
}
|
|
|
|
/**
|
|
* 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 $xs->getString();
|
|
}
|
|
|
|
function _fromRssAuthor($el)
|
|
{
|
|
$text = $el->textContent;
|
|
|
|
if (preg_match('/^(.*?) \((.*)\)$/', $text, $match)) {
|
|
$email = $match[1];
|
|
$name = $match[2];
|
|
} else if (preg_match('/^(.*?) <(.*)>$/', $text, $match)) {
|
|
$name = $match[1];
|
|
$email = $match[2];
|
|
} else if (preg_match('/.*@.*/', $text)) {
|
|
$email = $text;
|
|
$name = null;
|
|
} else {
|
|
$name = $text;
|
|
$email = null;
|
|
}
|
|
|
|
// Not really enough info
|
|
|
|
$actor = new ActivityObject();
|
|
|
|
$actor->element = $el;
|
|
|
|
$actor->type = ActivityObject::PERSON;
|
|
$actor->title = $name;
|
|
|
|
if (!empty($email)) {
|
|
$actor->id = 'mailto:'.$email;
|
|
}
|
|
|
|
return $actor;
|
|
}
|
|
|
|
function _fromDcCreator($el)
|
|
{
|
|
// Not really enough info
|
|
|
|
$text = $el->textContent;
|
|
|
|
$actor = new ActivityObject();
|
|
|
|
$actor->element = $el;
|
|
|
|
$actor->title = $text;
|
|
$actor->type = ActivityObject::PERSON;
|
|
|
|
return $actor;
|
|
}
|
|
|
|
function _fromRss($el)
|
|
{
|
|
$actor = new ActivityObject();
|
|
|
|
$actor->element = $el;
|
|
|
|
$actor->type = ActivityObject::PERSON; // @fixme guess better
|
|
|
|
$actor->title = ActivityUtils::childContent($el, ActivityObject::TITLE, self::RSS);
|
|
$actor->link = ActivityUtils::childContent($el, ActivityUtils::LINK, self::RSS);
|
|
$actor->id = ActivityUtils::getLink($el, self::SELF);
|
|
|
|
$desc = ActivityUtils::childContent($el, self::DESCRIPTION, self::RSS);
|
|
|
|
if (!empty($desc)) {
|
|
$actor->content = htmlspecialchars_decode($desc, ENT_QUOTES);
|
|
}
|
|
|
|
$imageEl = ActivityUtils::child($el, self::IMAGE, self::RSS);
|
|
|
|
if (!empty($imageEl)) {
|
|
$actor->avatarLinks[] = ActivityUtils::childContent($imageEl, self::URL, self::RSS);
|
|
}
|
|
|
|
return $actor;
|
|
}
|
|
|
|
private function _child($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();
|
|
}
|
|
}
|