forked from GNUsocial/gnu-social
589 lines
17 KiB
PHP
589 lines
17 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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/**
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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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*
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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 ActivityObject
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{
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const ARTICLE = 'http://activitystrea.ms/schema/1.0/article';
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const BLOGENTRY = 'http://activitystrea.ms/schema/1.0/blog-entry';
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const NOTE = 'http://activitystrea.ms/schema/1.0/note';
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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';
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const VIDEO = 'http://activitystrea.ms/schema/1.0/video';
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const AUDIO = 'http://activitystrea.ms/schema/1.0/audio';
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const BOOKMARK = 'http://activitystrea.ms/schema/1.0/bookmark';
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const PERSON = 'http://activitystrea.ms/schema/1.0/person';
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const GROUP = 'http://activitystrea.ms/schema/1.0/group';
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const PLACE = 'http://activitystrea.ms/schema/1.0/place';
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const COMMENT = 'http://activitystrea.ms/schema/1.0/comment';
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// ^^^^^^^^^^ tea!
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// Atom elements we snarf
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const TITLE = 'title';
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const SUMMARY = 'summary';
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const ID = 'id';
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const SOURCE = 'source';
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const NAME = 'name';
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const URI = 'uri';
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const EMAIL = 'email';
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const POSTEROUS = 'http://posterous.com/help/rss/1.0';
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const AUTHOR = 'author';
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const USERIMAGE = 'userImage';
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const PROFILEURL = 'profileUrl';
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const NICKNAME = 'nickName';
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const DISPLAYNAME = 'displayName';
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public $element;
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public $type;
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public $id;
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public $title;
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public $summary;
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public $content;
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public $link;
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public $source;
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public $avatarLinks = array();
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public $geopoint;
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public $poco;
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public $displayName;
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// @todo move this stuff to it's own PHOTO activity object
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const MEDIA_DESCRIPTION = 'description';
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public $thumbnail;
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public $largerImage;
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public $description;
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/**
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* Constructor
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*
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* This probably needs to be refactored
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* to generate a local class (ActivityPerson, ActivityFile, ...)
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* based on the object type.
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*
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* @param DOMElement $element DOM thing to turn into an Activity thing
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*/
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function __construct($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->element = $element;
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$this->geopoint = $this->_childContent(
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$element,
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ActivityContext::POINT,
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ActivityContext::GEORSS
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);
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if ($element->tagName == 'author') {
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$this->_fromAuthor($element);
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} else if ($element->tagName == 'item') {
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$this->_fromRssItem($element);
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} else {
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$this->_fromAtomEntry($element);
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}
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// Some per-type attributes...
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if ($this->type == self::PERSON || $this->type == self::GROUP) {
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$this->displayName = $this->title;
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$photos = ActivityUtils::getLinks($element, 'photo');
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if (count($photos)) {
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foreach ($photos as $link) {
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$this->avatarLinks[] = new AvatarLink($link);
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}
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} else {
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$avatars = ActivityUtils::getLinks($element, 'avatar');
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foreach ($avatars as $link) {
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$this->avatarLinks[] = new AvatarLink($link);
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}
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}
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$this->poco = new PoCo($element);
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}
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if ($this->type == self::PHOTO) {
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$this->thumbnail = ActivityUtils::getLink($element, 'preview');
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$this->largerImage = ActivityUtils::getLink($element, 'enclosure');
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$this->description = ActivityUtils::childContent(
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$element,
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ActivityObject::MEDIA_DESCRIPTION,
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Activity::MEDIA
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);
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}
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}
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private function _fromAuthor($element)
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{
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$this->type = self::PERSON; // XXX: is this fair?
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$this->title = $this->_childContent($element, self::NAME);
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$this->id = $this->_childContent($element, self::URI);
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if (empty($this->id)) {
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$email = $this->_childContent($element, self::EMAIL);
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if (!empty($email)) {
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// XXX: acct: ?
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$this->id = 'mailto:'.$email;
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}
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}
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}
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private function _fromAtomEntry($element)
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{
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$this->type = $this->_childContent($element, Activity::OBJECTTYPE,
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Activity::SPEC);
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if (empty($this->type)) {
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$this->type = ActivityObject::NOTE;
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}
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$this->summary = ActivityUtils::childHtmlContent($element, self::SUMMARY);
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$this->content = ActivityUtils::getContent($element);
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// We don't like HTML in our titles, although it's technically allowed
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$title = ActivityUtils::childHtmlContent($element, self::TITLE);
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$this->title = html_entity_decode(strip_tags($title), ENT_QUOTES, 'UTF-8');
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$this->source = $this->_getSource($element);
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$this->link = ActivityUtils::getPermalink($element);
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$this->id = $this->_childContent($element, self::ID);
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if (empty($this->id) && !empty($this->link)) { // fallback if there's no ID
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$this->id = $this->link;
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}
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}
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// @todo FIXME: rationalize with Activity::_fromRssItem()
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private function _fromRssItem($item)
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{
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$this->title = ActivityUtils::childContent($item, ActivityObject::TITLE, Activity::RSS);
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$contentEl = ActivityUtils::child($item, ActivityUtils::CONTENT, Activity::CONTENTNS);
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if (!empty($contentEl)) {
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$this->content = htmlspecialchars_decode($contentEl->textContent, ENT_QUOTES);
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} else {
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$descriptionEl = ActivityUtils::child($item, Activity::DESCRIPTION, Activity::RSS);
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if (!empty($descriptionEl)) {
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$this->content = htmlspecialchars_decode($descriptionEl->textContent, ENT_QUOTES);
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}
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}
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$this->link = ActivityUtils::childContent($item, ActivityUtils::LINK, Activity::RSS);
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$guidEl = ActivityUtils::child($item, Activity::GUID, Activity::RSS);
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if (!empty($guidEl)) {
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$this->id = $guidEl->textContent;
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if ($guidEl->hasAttribute('isPermaLink')) {
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// overwrites <link>
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$this->link = $this->id;
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}
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}
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}
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public static function fromRssAuthor($el)
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{
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$text = $el->textContent;
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if (preg_match('/^(.*?) \((.*)\)$/', $text, $match)) {
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$email = $match[1];
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$name = $match[2];
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} else if (preg_match('/^(.*?) <(.*)>$/', $text, $match)) {
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$name = $match[1];
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$email = $match[2];
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} else if (preg_match('/.*@.*/', $text)) {
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$email = $text;
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$name = null;
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} else {
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$name = $text;
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$email = null;
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}
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// Not really enough info
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$obj = new ActivityObject();
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$obj->element = $el;
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$obj->type = ActivityObject::PERSON;
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$obj->title = $name;
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if (!empty($email)) {
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$obj->id = 'mailto:'.$email;
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}
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return $obj;
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}
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public static function fromDcCreator($el)
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{
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// Not really enough info
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$text = $el->textContent;
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$obj = new ActivityObject();
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$obj->element = $el;
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$obj->title = $text;
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$obj->type = ActivityObject::PERSON;
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return $obj;
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}
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public static function fromRssChannel($el)
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{
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$obj = new ActivityObject();
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$obj->element = $el;
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$obj->type = ActivityObject::PERSON; // @fixme guess better
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$obj->title = ActivityUtils::childContent($el, ActivityObject::TITLE, Activity::RSS);
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$obj->link = ActivityUtils::childContent($el, ActivityUtils::LINK, Activity::RSS);
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$obj->id = ActivityUtils::getLink($el, Activity::SELF);
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if (empty($obj->id)) {
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$obj->id = $obj->link;
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}
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$desc = ActivityUtils::childContent($el, Activity::DESCRIPTION, Activity::RSS);
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if (!empty($desc)) {
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$obj->content = htmlspecialchars_decode($desc, ENT_QUOTES);
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}
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$imageEl = ActivityUtils::child($el, Activity::IMAGE, Activity::RSS);
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if (!empty($imageEl)) {
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$url = ActivityUtils::childContent($imageEl, Activity::URL, Activity::RSS);
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$al = new AvatarLink();
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$al->url = $url;
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$obj->avatarLinks[] = $al;
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}
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return $obj;
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}
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public static function fromPosterousAuthor($el)
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{
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$obj = new ActivityObject();
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$obj->type = ActivityObject::PERSON; // @fixme any others...?
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$userImage = ActivityUtils::childContent($el, self::USERIMAGE, self::POSTEROUS);
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if (!empty($userImage)) {
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$al = new AvatarLink();
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$al->url = $userImage;
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$obj->avatarLinks[] = $al;
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}
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$obj->link = ActivityUtils::childContent($el, self::PROFILEURL, self::POSTEROUS);
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$obj->id = $obj->link;
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$obj->poco = new PoCo();
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$obj->poco->preferredUsername = ActivityUtils::childContent($el, self::NICKNAME, self::POSTEROUS);
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$obj->poco->displayName = ActivityUtils::childContent($el, self::DISPLAYNAME, self::POSTEROUS);
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$obj->title = $obj->poco->displayName;
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return $obj;
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}
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private function _childContent($element, $tag, $namespace=ActivityUtils::ATOM)
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{
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return ActivityUtils::childContent($element, $tag, $namespace);
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}
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// Try to get a unique id for the source feed
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private function _getSource($element)
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{
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$sourceEl = ActivityUtils::child($element, 'source');
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if (empty($sourceEl)) {
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return null;
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} else {
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$href = ActivityUtils::getLink($sourceEl, 'self');
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if (!empty($href)) {
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return $href;
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} else {
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return ActivityUtils::childContent($sourceEl, 'id');
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}
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}
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}
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static function fromNotice(Notice $notice)
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{
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$object = new ActivityObject();
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if (Event::handle('StartActivityObjectFromNotice', array($notice, &$object))) {
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$object->type = ActivityObject::NOTE;
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$object->id = $notice->uri;
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$object->title = $notice->content;
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$object->content = $notice->rendered;
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$object->link = $notice->bestUrl();
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Event::handle('EndActivityObjectFromNotice', array($notice, &$object));
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}
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return $object;
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}
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static function fromProfile(Profile $profile)
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{
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$object = new ActivityObject();
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if (Event::handle('StartActivityObjectFromProfile', array($profile, &$object))) {
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$object->type = ActivityObject::PERSON;
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$object->id = $profile->getUri();
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$object->title = $profile->getBestName();
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$object->link = $profile->profileurl;
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$orig = $profile->getOriginalAvatar();
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if (!empty($orig)) {
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$object->avatarLinks[] = AvatarLink::fromAvatar($orig);
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}
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$sizes = array(
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AVATAR_PROFILE_SIZE,
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AVATAR_STREAM_SIZE,
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AVATAR_MINI_SIZE
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);
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foreach ($sizes as $size) {
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$alink = null;
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$avatar = $profile->getAvatar($size);
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if (!empty($avatar)) {
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$alink = AvatarLink::fromAvatar($avatar);
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} else {
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$alink = new AvatarLink();
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$alink->type = 'image/png';
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$alink->height = $size;
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$alink->width = $size;
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$alink->url = Avatar::defaultImage($size);
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if ($size == AVATAR_PROFILE_SIZE) {
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// Hack for Twitter import: we don't have a 96x96 image,
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// but we do have a 73x73 image. For now, fake it with that.
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$avatar = $profile->getAvatar(73);
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if ($avatar) {
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$alink = AvatarLink::fromAvatar($avatar);
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$alink->height= $size;
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$alink->width = $size;
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}
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}
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}
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$object->avatarLinks[] = $alink;
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}
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if (isset($profile->lat) && isset($profile->lon)) {
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$object->geopoint = (float)$profile->lat
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. ' ' . (float)$profile->lon;
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}
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$object->poco = PoCo::fromProfile($profile);
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Event::handle('EndActivityObjectFromProfile', array($profile, &$object));
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}
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return $object;
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}
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static function fromGroup($group)
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{
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$object = new ActivityObject();
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if (Event::handle('StartActivityObjectFromGroup', array($group, &$object))) {
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$object->type = ActivityObject::GROUP;
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$object->id = $group->getUri();
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$object->title = $group->getBestName();
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$object->link = $group->getUri();
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$object->avatarLinks[] = AvatarLink::fromFilename($group->homepage_logo,
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AVATAR_PROFILE_SIZE);
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$object->avatarLinks[] = AvatarLink::fromFilename($group->stream_logo,
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AVATAR_STREAM_SIZE);
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$object->avatarLinks[] = AvatarLink::fromFilename($group->mini_logo,
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AVATAR_MINI_SIZE);
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$object->poco = PoCo::fromGroup($group);
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Event::handle('EndActivityObjectFromGroup', array($group, &$object));
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}
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return $object;
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}
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function outputTo($xo, $tag='activity:object')
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{
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if (!empty($tag)) {
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$xo->elementStart($tag);
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}
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$xo->element('activity:object-type', null, $this->type);
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$xo->element(self::ID, null, $this->id);
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if (!empty($this->title)) {
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$xo->element(
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self::TITLE,
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null,
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common_xml_safe_str($this->title)
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);
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}
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if (!empty($this->summary)) {
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$xo->element(
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self::SUMMARY,
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null,
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common_xml_safe_str($this->summary)
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);
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}
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if (!empty($this->content)) {
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// XXX: assuming HTML content here
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$xo->element(
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ActivityUtils::CONTENT,
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array('type' => 'html'),
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common_xml_safe_str($this->content)
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);
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}
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if (!empty($this->link)) {
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$xo->element(
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'link',
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array(
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'rel' => 'alternate',
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'type' => 'text/html',
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'href' => $this->link
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),
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null
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);
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}
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if ($this->type == ActivityObject::PERSON
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|| $this->type == ActivityObject::GROUP) {
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foreach ($this->avatarLinks as $avatar) {
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$xo->element(
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'link', array(
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'rel' => 'avatar',
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'type' => $avatar->type,
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'media:width' => $avatar->width,
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'media:height' => $avatar->height,
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'href' => $avatar->url
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),
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null
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|
);
|
|
}
|
|
}
|
|
|
|
if (!empty($this->geopoint)) {
|
|
$xo->element(
|
|
'georss:point',
|
|
null,
|
|
$this->geopoint
|
|
);
|
|
}
|
|
|
|
if (!empty($this->poco)) {
|
|
$xo->raw($this->poco->asString());
|
|
}
|
|
|
|
foreach ($this->extra as $el) {
|
|
list($extraTag, $attrs, $content) = $el;
|
|
$xo->element($extraTag, $attrs, $content);
|
|
}
|
|
|
|
if (!empty($tag)) {
|
|
$xo->elementEnd($tag);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
function asString($tag='activity:object')
|
|
{
|
|
$xs = new XMLStringer(true);
|
|
|
|
$this->outputTo($xs, $tag);
|
|
|
|
return $xs->getString();
|
|
}
|
|
}
|