629 lines
22 KiB
PHP
629 lines
22 KiB
PHP
<?php
|
|
/*
|
|
* GNU Social - a federating social network
|
|
* Copyright (C) 2014, Free Software Foundation, Inc.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
if (!defined('GNUSOCIAL')) { exit(1); }
|
|
|
|
/**
|
|
* Superclass for plugins which add Activity types and such
|
|
*
|
|
* @category Activity
|
|
* @package GNUsocial
|
|
* @author Mikael Nordfeldth <mmn@hethane.se>
|
|
* @copyright 2014 Free Software Foundation, Inc.
|
|
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
|
|
* @link http://gnu.io/social
|
|
*/
|
|
abstract class ActivityHandlerPlugin extends Plugin
|
|
{
|
|
/**
|
|
* Returns a key string which represents this activity in HTML classes,
|
|
* ids etc, as when offering selection of what type of post to make.
|
|
* In MicroAppPlugin, this is paired with the user-visible localizable appTitle().
|
|
*
|
|
* @return string (compatible with HTML classes)
|
|
*/
|
|
abstract function tag();
|
|
|
|
/**
|
|
* Return a list of ActivityStreams object type IRIs
|
|
* which this micro-app handles. Default implementations
|
|
* of the base class will use this list to check if a
|
|
* given ActivityStreams object belongs to us, via
|
|
* $this->isMyNotice() or $this->isMyActivity.
|
|
*
|
|
* An empty list means any type is ok. (Favorite verb etc.)
|
|
*
|
|
* @return array of strings
|
|
*/
|
|
abstract function types();
|
|
|
|
/**
|
|
* Return a list of ActivityStreams verb IRIs which
|
|
* this micro-app handles. Default implementations
|
|
* of the base class will use this list to check if a
|
|
* given ActivityStreams verb belongs to us, via
|
|
* $this->isMyNotice() or $this->isMyActivity.
|
|
*
|
|
* All micro-app classes must override this method.
|
|
*
|
|
* @return array of strings
|
|
*/
|
|
public function verbs() {
|
|
return array(ActivityVerb::POST);
|
|
}
|
|
|
|
/**
|
|
* Check if a given ActivityStreams activity should be handled by this
|
|
* micro-app plugin.
|
|
*
|
|
* The default implementation checks against the activity type list
|
|
* returned by $this->types(), and requires that exactly one matching
|
|
* object be present. You can override this method to expand
|
|
* your checks or to compare the activity's verb, etc.
|
|
*
|
|
* @param Activity $activity
|
|
* @return boolean
|
|
*/
|
|
function isMyActivity(Activity $act) {
|
|
return (count($act->objects) == 1
|
|
&& ($act->objects[0] instanceof ActivityObject)
|
|
&& $this->isMyVerb($act->verb)
|
|
&& $this->isMyType($act->objects[0]->type));
|
|
}
|
|
|
|
/**
|
|
* Check if a given notice object should be handled by this micro-app
|
|
* plugin.
|
|
*
|
|
* The default implementation checks against the activity type list
|
|
* returned by $this->types(). You can override this method to expand
|
|
* your checks, but follow the execution chain to get it right.
|
|
*
|
|
* @param Notice $notice
|
|
* @return boolean
|
|
*/
|
|
function isMyNotice(Notice $notice) {
|
|
return $this->isMyVerb($notice->verb) && $this->isMyType($notice->object_type);
|
|
}
|
|
|
|
function isMyVerb($verb) {
|
|
$verb = $verb ?: ActivityVerb::POST; // post is the default verb
|
|
return ActivityUtils::compareVerbs($verb, $this->verbs());
|
|
}
|
|
|
|
function isMyType($type) {
|
|
// Third argument to compareTypes is true, to allow for notices with empty object_type for example (verb-only)
|
|
return count($this->types())===0 || ActivityUtils::compareTypes($type, $this->types());
|
|
}
|
|
|
|
/**
|
|
* Given a parsed ActivityStreams activity, your plugin
|
|
* gets to figure out how to actually save it into a notice
|
|
* and any additional data structures you require.
|
|
*
|
|
* This function is deprecated and in the future, Notice::saveActivity
|
|
* should be called from onStartHandleFeedEntryWithProfile in this class
|
|
* (which instead turns to saveObjectFromActivity).
|
|
*
|
|
* @param Activity $activity
|
|
* @param Profile $actor
|
|
* @param array $options=array()
|
|
*
|
|
* @return Notice the resulting notice
|
|
*/
|
|
public function saveNoticeFromActivity(Activity $activity, Profile $actor, array $options=array())
|
|
{
|
|
// Any plugin which has not implemented saveObjectFromActivity _must_
|
|
// override this function until they are migrated (this function will
|
|
// be deleted when all plugins are migrated to saveObjectFromActivity).
|
|
|
|
if (isset($this->oldSaveNew)) {
|
|
throw new ServerException('A function has been called for new saveActivity functionality, but is still set with an oldSaveNew configuration');
|
|
}
|
|
|
|
return Notice::saveActivity($activity, $actor, $options);
|
|
}
|
|
|
|
/**
|
|
* Given a parsed ActivityStreams activity, your plugin gets
|
|
* to figure out itself how to store the additional data into
|
|
* the database, besides the base data stored by the core.
|
|
*
|
|
* This will handle just about all events where an activity
|
|
* object gets saved, whether it is via AtomPub, OStatus
|
|
* (PuSH and Salmon transports), or ActivityStreams-based
|
|
* backup/restore of account data.
|
|
*
|
|
* You should be able to accept as input the output from an
|
|
* asActivity() call on the stored object. Where applicable,
|
|
* try to use existing ActivityStreams structures and object
|
|
* types, and be liberal in accepting input from what might
|
|
* be other compatible apps.
|
|
*
|
|
* All micro-app classes must override this method.
|
|
*
|
|
* @fixme are there any standard options?
|
|
*
|
|
* @param Activity $activity
|
|
* @param Notice $stored The notice in our database for this certain object
|
|
* @param array $options=array()
|
|
*
|
|
* @return object If the verb handling plugin creates an object, it can be returned here (otherwise true)
|
|
* @throws exception On any error.
|
|
*/
|
|
protected function saveObjectFromActivity(Activity $activity, Notice $stored, array $options=array())
|
|
{
|
|
throw new ServerException('This function should be abstract when all plugins have migrated to saveObjectFromActivity');
|
|
}
|
|
|
|
/*
|
|
* This usually gets called from Notice::saveActivity after a Notice object has been created,
|
|
* so it contains a proper id and a uri for the object to be saved.
|
|
*/
|
|
public function onStoreActivityObject(Activity $act, Notice $stored, array $options, &$object) {
|
|
// $this->oldSaveNew is there during a migration period of plugins, to start using
|
|
// Notice::saveActivity instead of Notice::saveNew
|
|
if (!$this->isMyActivity($act) || isset($this->oldSaveNew)) {
|
|
return true;
|
|
}
|
|
$object = $this->saveObjectFromActivity($act, $stored, $options);
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Given an existing Notice object, your plugin gets to
|
|
* figure out how to arrange it into an ActivityStreams
|
|
* object.
|
|
*
|
|
* This will be how your specialized notice gets output in
|
|
* Atom feeds and JSON-based ActivityStreams output, including
|
|
* account backup/restore and OStatus (PuSH and Salmon transports).
|
|
*
|
|
* You should be able to round-trip data from this format back
|
|
* through $this->saveNoticeFromActivity(). Where applicable, try
|
|
* to use existing ActivityStreams structures and object types,
|
|
* and consider interop with other compatible apps.
|
|
*
|
|
* All micro-app classes must override this method.
|
|
*
|
|
* @fixme this outputs an ActivityObject, not an Activity. Any compat issues?
|
|
*
|
|
* @param Notice $notice
|
|
*
|
|
* @return ActivityObject
|
|
*/
|
|
abstract function activityObjectFromNotice(Notice $notice);
|
|
|
|
/**
|
|
* When a notice is deleted, you'll be called here for a chance
|
|
* to clean up any related resources.
|
|
*
|
|
* All micro-app classes must override this method.
|
|
*
|
|
* @param Notice $notice
|
|
*/
|
|
abstract function deleteRelated(Notice $notice);
|
|
|
|
protected function notifyMentioned(Notice $stored, array &$mentioned_ids)
|
|
{
|
|
// pass through silently by default
|
|
|
|
// If we want to stop any other plugin from notifying based on this activity, return false instead.
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Called when generating Atom XML ActivityStreams output from an
|
|
* ActivityObject belonging to this plugin. Gives the plugin
|
|
* a chance to add custom output.
|
|
*
|
|
* Note that you can only add output of additional XML elements,
|
|
* not change existing stuff here.
|
|
*
|
|
* If output is already handled by the base Activity classes,
|
|
* you can leave this base implementation as a no-op.
|
|
*
|
|
* @param ActivityObject $obj
|
|
* @param XMLOutputter $out to add elements at end of object
|
|
*/
|
|
function activityObjectOutputAtom(ActivityObject $obj, XMLOutputter $out)
|
|
{
|
|
// default is a no-op
|
|
}
|
|
|
|
/**
|
|
* Called when generating JSON ActivityStreams output from an
|
|
* ActivityObject belonging to this plugin. Gives the plugin
|
|
* a chance to add custom output.
|
|
*
|
|
* Modify the array contents to your heart's content, and it'll
|
|
* all get serialized out as JSON.
|
|
*
|
|
* If output is already handled by the base Activity classes,
|
|
* you can leave this base implementation as a no-op.
|
|
*
|
|
* @param ActivityObject $obj
|
|
* @param array &$out JSON-targeted array which can be modified
|
|
*/
|
|
public function activityObjectOutputJson(ActivityObject $obj, array &$out)
|
|
{
|
|
// default is a no-op
|
|
}
|
|
|
|
/**
|
|
* When a notice is deleted, delete the related objects
|
|
* by calling the overridable $this->deleteRelated().
|
|
*
|
|
* @param Notice $notice Notice being deleted
|
|
*
|
|
* @return boolean hook value
|
|
*/
|
|
public function onNoticeDeleteRelated(Notice $notice)
|
|
{
|
|
if ($this->isMyNotice($notice)) {
|
|
try {
|
|
$this->deleteRelated($notice);
|
|
} catch (AlreadyFulfilledException $e) {
|
|
// Nothing to see here, it's obviously already gone...
|
|
}
|
|
}
|
|
|
|
// Always continue this event in our activity handling plugins.
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @param Notice $stored The notice being distributed
|
|
* @param array &$mentioned_ids List of profiles (from $stored->getReplies())
|
|
*/
|
|
public function onStartNotifyMentioned(Notice $stored, array &$mentioned_ids)
|
|
{
|
|
if (!$this->isMyNotice($stored)) {
|
|
return true;
|
|
}
|
|
|
|
return $this->notifyMentioned($stored, $mentioned_ids);
|
|
}
|
|
|
|
/**
|
|
* Render a notice as one of our objects
|
|
*
|
|
* @param Notice $notice Notice to render
|
|
* @param ActivityObject &$object Empty object to fill
|
|
*
|
|
* @return boolean hook value
|
|
*/
|
|
function onStartActivityObjectFromNotice(Notice $notice, &$object)
|
|
{
|
|
if (!$this->isMyNotice($notice)) {
|
|
return true;
|
|
}
|
|
|
|
$object = $this->activityObjectFromNotice($notice);
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Handle a posted object from PuSH
|
|
*
|
|
* @param Activity $activity activity to handle
|
|
* @param Profile $actor Profile for the feed
|
|
*
|
|
* @return boolean hook value
|
|
*/
|
|
function onStartHandleFeedEntryWithProfile(Activity $activity, Profile $profile, &$notice)
|
|
{
|
|
if (!$this->isMyActivity($activity)) {
|
|
return true;
|
|
}
|
|
|
|
// We are guaranteed to get a Profile back from checkAuthorship (or it throws an exception)
|
|
$profile = ActivityUtils::checkAuthorship($activity, $profile);
|
|
|
|
$object = $activity->objects[0];
|
|
|
|
$options = array('uri' => $object->id,
|
|
'url' => $object->link,
|
|
'is_local' => Notice::REMOTE,
|
|
'source' => 'ostatus');
|
|
|
|
if (!isset($this->oldSaveNew)) {
|
|
$notice = Notice::saveActivity($activity, $profile, $options);
|
|
} else {
|
|
$notice = $this->saveNoticeFromActivity($activity, $profile, $options);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Handle a posted object from Salmon
|
|
*
|
|
* @param Activity $activity activity to handle
|
|
* @param mixed $target user or group targeted
|
|
*
|
|
* @return boolean hook value
|
|
*/
|
|
|
|
function onStartHandleSalmonTarget(Activity $activity, $target)
|
|
{
|
|
if (!$this->isMyActivity($activity)) {
|
|
return true;
|
|
}
|
|
if (!isset($this->oldSaveNew)) {
|
|
// Handle saveActivity in OStatus class for incoming salmon, remove this event
|
|
// handler when all plugins have gotten rid of "oldSaveNew".
|
|
return true;
|
|
}
|
|
|
|
$this->log(LOG_INFO, get_called_class()." checking {$activity->id} as a valid Salmon slap.");
|
|
|
|
if ($target instanceof User_group || $target->isGroup()) {
|
|
$uri = $target->getUri();
|
|
if (!array_key_exists($uri, $activity->context->attention)) {
|
|
// @todo FIXME: please document (i18n).
|
|
// TRANS: Client exception thrown when ...
|
|
throw new ClientException(_('Object not posted to this group.'));
|
|
}
|
|
} elseif ($target instanceof Profile && $target->isLocal()) {
|
|
$original = null;
|
|
// FIXME: Shouldn't favorites show up with a 'target' activityobject?
|
|
if (!ActivityUtils::compareVerbs($activity->verb, array(ActivityVerb::POST)) && isset($activity->objects[0])) {
|
|
// If this is not a post, it's a verb targeted at something (such as a Favorite attached to a note)
|
|
if (!empty($activity->objects[0]->id)) {
|
|
$activity->context->replyToID = $activity->objects[0]->id;
|
|
}
|
|
}
|
|
if (!empty($activity->context->replyToID)) {
|
|
$original = Notice::getKV('uri', $activity->context->replyToID);
|
|
}
|
|
if ((!$original instanceof Notice || $original->profile_id != $target->id)
|
|
&& !array_key_exists($target->getUri(), $activity->context->attention)) {
|
|
// @todo FIXME: Please document (i18n).
|
|
// TRANS: Client exception when ...
|
|
throw new ClientException(_('Object not posted to this user.'));
|
|
}
|
|
} else {
|
|
// TRANS: Server exception thrown when a micro app plugin uses a target that cannot be handled.
|
|
throw new ServerException(_('Do not know how to handle this kind of target.'));
|
|
}
|
|
|
|
$oactor = Ostatus_profile::ensureActivityObjectProfile($activity->actor);
|
|
$actor = $oactor->localProfile();
|
|
|
|
// FIXME: will this work in all cases? I made it work for Favorite...
|
|
if (ActivityUtils::compareVerbs($activity->verb, array(ActivityVerb::POST))) {
|
|
$object = $activity->objects[0];
|
|
} else {
|
|
$object = $activity;
|
|
}
|
|
|
|
$options = array('uri' => $object->id,
|
|
'url' => $object->link,
|
|
'is_local' => Notice::REMOTE,
|
|
'source' => 'ostatus');
|
|
|
|
$notice = $this->saveNoticeFromActivity($activity, $actor, $options);
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Handle object posted via AtomPub
|
|
*
|
|
* @param Activity $activity Activity that was posted
|
|
* @param Profile $scoped Profile of user posting
|
|
* @param Notice &$notice Resulting notice
|
|
*
|
|
* @return boolean hook value
|
|
*/
|
|
public function onStartAtomPubNewActivity(Activity $activity, Profile $scoped, Notice &$notice=null)
|
|
{
|
|
if (!$this->isMyActivity($activity)) {
|
|
return true;
|
|
}
|
|
|
|
$options = array('source' => 'atompub');
|
|
|
|
$notice = $this->saveNoticeFromActivity($activity, $scoped, $options);
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Handle object imported from a backup file
|
|
*
|
|
* @param User $user User to import for
|
|
* @param ActivityObject $author Original author per import file
|
|
* @param Activity $activity Activity to import
|
|
* @param boolean $trusted Is this a trusted user?
|
|
* @param boolean &$done Is this done (success or unrecoverable error)
|
|
*
|
|
* @return boolean hook value
|
|
*/
|
|
function onStartImportActivity($user, $author, Activity $activity, $trusted, &$done)
|
|
{
|
|
if (!$this->isMyActivity($activity)) {
|
|
return true;
|
|
}
|
|
|
|
$obj = $activity->objects[0];
|
|
|
|
$options = array('uri' => $object->id,
|
|
'url' => $object->link,
|
|
'source' => 'restore');
|
|
|
|
// $user->getProfile() is a Profile
|
|
$saved = $this->saveNoticeFromActivity($activity,
|
|
$user->getProfile(),
|
|
$options);
|
|
|
|
if (!empty($saved)) {
|
|
$done = true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Event handler gives the plugin a chance to add custom
|
|
* Atom XML ActivityStreams output from a previously filled-out
|
|
* ActivityObject.
|
|
*
|
|
* The atomOutput method is called if it's one of
|
|
* our matching types.
|
|
*
|
|
* @param ActivityObject $obj
|
|
* @param XMLOutputter $out to add elements at end of object
|
|
* @return boolean hook return value
|
|
*/
|
|
function onEndActivityObjectOutputAtom(ActivityObject $obj, XMLOutputter $out)
|
|
{
|
|
if (in_array($obj->type, $this->types())) {
|
|
$this->activityObjectOutputAtom($obj, $out);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Event handler gives the plugin a chance to add custom
|
|
* JSON ActivityStreams output from a previously filled-out
|
|
* ActivityObject.
|
|
*
|
|
* The activityObjectOutputJson method is called if it's one of
|
|
* our matching types.
|
|
*
|
|
* @param ActivityObject $obj
|
|
* @param array &$out JSON-targeted array which can be modified
|
|
* @return boolean hook return value
|
|
*/
|
|
function onEndActivityObjectOutputJson(ActivityObject $obj, array &$out)
|
|
{
|
|
if (in_array($obj->type, $this->types())) {
|
|
$this->activityObjectOutputJson($obj, $out);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
public function onStartOpenNoticeListItemElement(NoticeListItem $nli)
|
|
{
|
|
if (!$this->isMyNotice($nli->notice)) {
|
|
return true;
|
|
}
|
|
|
|
$this->openNoticeListItemElement($nli);
|
|
|
|
Event::handle('EndOpenNoticeListItemElement', array($nli));
|
|
return false;
|
|
}
|
|
|
|
public function onStartCloseNoticeListItemElement(NoticeListItem $nli)
|
|
{
|
|
if (!$this->isMyNotice($nli->notice)) {
|
|
return true;
|
|
}
|
|
|
|
$this->closeNoticeListItemElement($nli);
|
|
|
|
Event::handle('EndCloseNoticeListItemElement', array($nli));
|
|
return false;
|
|
}
|
|
|
|
protected function openNoticeListItemElement(NoticeListItem $nli)
|
|
{
|
|
$id = (empty($nli->repeat)) ? $nli->notice->id : $nli->repeat->id;
|
|
$class = 'h-entry notice ' . $this->tag();
|
|
if ($nli->notice->scope != 0 && $nli->notice->scope != 1) {
|
|
$class .= ' limited-scope';
|
|
}
|
|
$nli->out->elementStart('li', array('class' => $class,
|
|
'id' => 'notice-' . $id));
|
|
}
|
|
|
|
protected function closeNoticeListItemElement(NoticeListItem $nli)
|
|
{
|
|
$nli->out->elementEnd('li');
|
|
}
|
|
|
|
|
|
// FIXME: This is overriden in MicroAppPlugin but shouldn't have to be
|
|
public function onStartShowNoticeItem(NoticeListItem $nli)
|
|
{
|
|
if (!$this->isMyNotice($nli->notice)) {
|
|
return true;
|
|
}
|
|
|
|
try {
|
|
$this->showNoticeListItem($nli);
|
|
} catch (Exception $e) {
|
|
common_log(LOG_ERR, 'Error showing notice '.$nli->getNotice()->getID().': ' . $e->getMessage());
|
|
$nli->out->element('p', 'error', sprintf(_('Error showing notice: %s'), $e->getMessage()));
|
|
}
|
|
|
|
Event::handle('EndShowNoticeItem', array($nli));
|
|
return false;
|
|
}
|
|
|
|
protected function showNoticeListItem(NoticeListItem $nli)
|
|
{
|
|
$nli->showNoticeHeaders();
|
|
$nli->showContent();
|
|
$nli->showNoticeFooter();
|
|
}
|
|
|
|
public function onStartShowNoticeItemNotice(NoticeListItem $nli)
|
|
{
|
|
if (!$this->isMyNotice($nli->notice)) {
|
|
return true;
|
|
}
|
|
|
|
$this->showNoticeItemNotice($nli);
|
|
|
|
Event::handle('EndShowNoticeItemNotice', array($nli));
|
|
return false;
|
|
}
|
|
|
|
protected function showNoticeItemNotice(NoticeListItem $nli)
|
|
{
|
|
$nli->showNoticeTitle();
|
|
$nli->showAuthor();
|
|
$nli->showAddressees();
|
|
$nli->showContent();
|
|
}
|
|
|
|
public function onStartShowNoticeContent(Notice $stored, HTMLOutputter $out, Profile $scoped=null)
|
|
{
|
|
if (!$this->isMyNotice($stored)) {
|
|
return true;
|
|
}
|
|
|
|
try {
|
|
$this->showNoticeContent($stored, $out, $scoped);
|
|
} catch (Exception $e) {
|
|
$out->element('div', 'error', $e->getMessage());
|
|
}
|
|
return false;
|
|
}
|
|
|
|
protected function showNoticeContent(Notice $stored, HTMLOutputter $out, Profile $scoped=null)
|
|
{
|
|
$out->text($stored->getContent());
|
|
}
|
|
}
|