gnu-social/actions/apitimelineuser.php

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<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social 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.
//
// GNU social 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 GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* Show a user's timeline
*
* @category API
* @package GNUsocial
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* @author Craig Andrews <candrews@integralblue.com>
* @author Evan Prodromou <evan@status.net>
* @author Jeffery To <jeffery.to@gmail.com>
* @author mac65 <mac65@mac65.com>
* @author Mike Cochrane <mikec@mikenz.geek.nz>
* @author Robin Millette <robin@millette.info>
* @author Zach Copley <zach@status.net>
* @copyright 2009 StatusNet, Inc.
* @copyright 2009 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
defined('GNUSOCIAL') || die();
/**
* Returns the most recent notices (default 20) posted by the authenticating
* user. Another user's timeline can be requested via the id parameter. This
* is the API equivalent of the user profile web page.
*
* @category API
* @package GNUsocial
* @author Craig Andrews <candrews@integralblue.com>
* @author Evan Prodromou <evan@status.net>
* @author Jeffery To <jeffery.to@gmail.com>
* @author mac65 <mac65@mac65.com>
* @author Mike Cochrane <mikec@mikenz.geek.nz>
* @author Robin Millette <robin@millette.info>
* @author Zach Copley <zach@status.net>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class ApiTimelineUserAction extends ApiBareAuthAction
{
public $notices = null;
public $next_id = null;
/**
* We expose AtomPub here, so non-GET/HEAD reqs must be read/write.
*
* @param array $args other arguments
*
* @return boolean true
*/
public function isReadOnly($args)
{
return ($_SERVER['REQUEST_METHOD'] == 'GET' || $_SERVER['REQUEST_METHOD'] == 'HEAD');
}
/**
* When was this feed last modified?
*
* @return string datestamp of the latest notice in the stream
*/
public function lastModified()
{
if (!empty($this->notices) && (count($this->notices) > 0)) {
return strtotime($this->notices[0]->created);
}
return null;
}
/**
* An entity tag for this stream
*
* Returns an Etag based on the action name, language, user ID, and
* timestamps of the first and last notice in the timeline
*
* @return string etag
*/
public function etag()
{
if (!empty($this->notices) && (count($this->notices) > 0)) {
$last = count($this->notices) - 1;
return '"' . implode(':', [
$this->arg('action'),
common_user_cache_hash($this->scoped),
common_language(),
$this->target->getID(),
strtotime($this->notices[0]->created),
strtotime($this->notices[$last]->created),
]) . '"';
}
return null;
}
/**
* Take arguments for running
*
* @param array $args $_REQUEST args
*
* @return boolean success flag
* @throws AuthorizationException
* @throws ClientException
*/
protected function prepare(array $args = [])
{
parent::prepare($args);
$this->target = $this->getTargetProfile($this->arg('id'));
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if (!($this->target instanceof Profile)) {
// TRANS: Client error displayed requesting most recent notices for a non-existing user.
$this->clientError(_('No such user.'), 404);
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}
if (!$this->target->isLocal()) {
$this->serverError(_('Remote user timelines are not available here yet.'), 501);
}
$this->notices = $this->getNotices();
return true;
}
/**
* Get notices
*
* @return array notices
*/
public function getNotices()
{
$notices = [];
$notice = $this->target->getNotices(
($this->page - 1) * $this->count,
$this->count + 1,
$this->since_id,
$this->max_id,
$this->scoped
);
while ($notice->fetch()) {
if (count($notices) < $this->count) {
$notices[] = clone($notice);
} else {
$this->next_id = $notice->id;
break;
}
}
return $notices;
}
/**
* Handle the request
*
* Just show the notices
*
* @return void
* @throws ClientException
* @throws ServerException
*/
protected function handle()
{
parent::handle();
if ($this->isPost()) {
$this->handlePost();
} else {
$this->showTimeline();
}
}
public function handlePost()
{
if (!$this->scoped instanceof Profile ||
!$this->target->sameAs($this->scoped)) {
// TRANS: Client error displayed trying to add a notice to another user's timeline.
$this->clientError(_('Only the user can add to their own timeline.'), 403);
}
// Only handle posts for Atom
if ($this->format != 'atom') {
// TRANS: Client error displayed when using another format than AtomPub.
$this->clientError(_('Only accept AtomPub for Atom feeds.'));
}
$xml = trim(file_get_contents('php://input'));
if (empty($xml)) {
// TRANS: Client error displayed attempting to post an empty API notice.
$this->clientError(_('Atom post must not be empty.'));
}
$old = error_reporting(error_reporting() & ~(E_WARNING | E_NOTICE));
$dom = new DOMDocument();
$ok = $dom->loadXML($xml);
error_reporting($old);
if (!$ok) {
// TRANS: Client error displayed attempting to post an API that is not well-formed XML.
$this->clientError(_('Atom post must be well-formed XML.'));
}
if ($dom->documentElement->namespaceURI != Activity::ATOM ||
$dom->documentElement->localName != 'entry') {
// TRANS: Client error displayed when not using an Atom entry.
$this->clientError(_('Atom post must be an Atom entry.'));
}
$activity = new Activity($dom->documentElement);
common_debug('AtomPub: Ignoring right now, but this POST was made to collection: ' . $activity->id);
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// Reset activity data so we can handle it in the same functions as with OStatus
// because we don't let clients set their own UUIDs... Not sure what AtomPub thinks
// about that though.
$activity->id = null;
$activity->actor = null; // not used anyway, we use $this->target
$activity->objects[0]->id = null;
$stored = null;
if (Event::handle('StartAtomPubNewActivity', array($activity, $this->target, &$stored))) {
// TRANS: Client error displayed when not using the POST verb. Do not translate POST.
throw new ClientException(_('Could not handle this Atom Activity.'));
}
if (!$stored instanceof Notice) {
throw new ServerException('Server did not create a Notice object from handled AtomPub activity.');
}
Event::handle('EndAtomPubNewActivity', array($activity, $this->target, $stored));
http_response_code(201);
header("Location: " . common_local_url('ApiStatusesShow', array('id' => $stored->getID(),
'format' => 'atom')));
$this->showSingleAtomStatus($stored);
}
/**
* Show the timeline of notices
*
* @return void
* @throws ClientException
* @throws ServerException
* @throws UserNoProfileException
*/
public function showTimeline()
{
// We'll use the shared params from the Atom stub
// for other feed types.
$atom = new AtomUserNoticeFeed($this->target->getUser(), $this->scoped);
$link = common_local_url(
'showstream',
array('nickname' => $this->target->getNickname())
);
$self = $this->getSelfUri();
// FriendFeed's SUP protocol
// Also added RSS and Atom feeds
$suplink = common_local_url('sup', null, null, $this->target->getID());
header('X-SUP-ID: ' . $suplink);
// paging links
$nextUrl = !empty($this->next_id)
? common_local_url(
'ApiTimelineUser',
array('format' => $this->format,
'id' => $this->target->getID()),
array('max_id' => $this->next_id)
)
: null;
$prevExtra = [];
if (!empty($this->notices)) {
assert($this->notices[0] instanceof Notice);
$prevExtra['since_id'] = $this->notices[0]->id;
}
$prevUrl = common_local_url(
'ApiTimelineUser',
array('format' => $this->format,
'id' => $this->target->getID()),
$prevExtra
);
$firstUrl = common_local_url(
'ApiTimelineUser',
array('format' => $this->format,
'id' => $this->target->getID())
);
switch ($this->format) {
case 'xml':
$this->showXmlTimeline($this->notices);
break;
case 'rss':
$this->showRssTimeline(
$this->notices,
$atom->title,
$link,
$atom->subtitle,
$suplink,
$atom->logo,
$self
);
break;
case 'atom':
header('Content-Type: application/atom+xml; charset=utf-8');
$atom->setId($self);
$atom->setSelfLink($self);
// Add navigation links: next, prev, first
// Note: we use IDs rather than pages for navigation; page boundaries
// change too quickly!
if (!empty($this->next_id)) {
$atom->addLink(
$nextUrl,
array('rel' => 'next',
'type' => 'application/atom+xml')
);
}
if (($this->page > 1 || !empty($this->max_id)) && !empty($this->notices)) {
$atom->addLink(
$prevUrl,
array('rel' => 'prev',
'type' => 'application/atom+xml')
);
}
if ($this->page > 1 || !empty($this->since_id) || !empty($this->max_id)) {
$atom->addLink(
$firstUrl,
array('rel' => 'first',
'type' => 'application/atom+xml')
);
}
$atom->addEntryFromNotices($this->notices);
$this->raw($atom->getString());
break;
case 'json':
$this->showJsonTimeline($this->notices);
break;
case 'as':
header('Content-Type: ' . ActivityStreamJSONDocument::CONTENT_TYPE);
$doc = new ActivityStreamJSONDocument($this->scoped);
$doc->setTitle($atom->title);
$doc->addLink($link, 'alternate', 'text/html');
$doc->addItemsFromNotices($this->notices);
if (!empty($this->next_id)) {
$doc->addLink(
$nextUrl,
array('rel' => 'next',
'type' => ActivityStreamJSONDocument::CONTENT_TYPE)
);
}
if (($this->page > 1 || !empty($this->max_id)) && !empty($this->notices)) {
$doc->addLink(
$prevUrl,
array('rel' => 'prev',
'type' => ActivityStreamJSONDocument::CONTENT_TYPE)
);
}
if ($this->page > 1 || !empty($this->since_id) || !empty($this->max_id)) {
$doc->addLink(
$firstUrl,
array('rel' => 'first',
'type' => ActivityStreamJSONDocument::CONTENT_TYPE)
);
}
$this->raw($doc->asString());
break;
default:
// TRANS: Client error displayed when coming across a non-supported API method.
$this->clientError(_('API method not found.'), 404);
}
}
}