gnu-social/actions/apitimelineuser.php

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<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Show a user's timeline
*
* PHP version 5
*
* LICENCE: 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/>.
*
* @category API
* @package StatusNet
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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 http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
if (!defined('STATUSNET')) {
exit(1);
}
/**
* 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 StatusNet
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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>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
class ApiTimelineUserAction extends ApiBareAuthAction
{
var $notices = null;
/**
* Take arguments for running
*
* @param array $args $_REQUEST args
*
* @return boolean success flag
*/
protected function prepare(array $args=array())
{
parent::prepare($args);
$this->target = $this->getTargetProfile($this->arg('id'));
if (!($this->target instanceof Profile)) {
// TRANS: Client error displayed requesting most recent notices for a non-existing user.
$this->clientError(_('No such user.'), 404);
}
$this->notices = $this->getNotices();
return true;
}
/**
* Handle the request
*
* Just show the notices
*
* @return void
*/
protected function handle()
{
parent::handle();
if ($this->isPost()) {
$this->handlePost();
} else {
$this->showTimeline();
}
}
/**
* Show the timeline of notices
*
* @return void
*/
function showTimeline()
{
// We'll use the shared params from the Atom stub
// for other feed types.
$atom = new AtomUserNoticeFeed($this->target->getUser(), $this->auth_user);
$link = common_local_url(
'showstream',
array('nickname' => $this->target->nickname)
);
$self = $this->getSelfUri();
// FriendFeed's SUP protocol
// Also added RSS and Atom feeds
$suplink = common_local_url('sup', null, null, $this->target->id);
header('X-SUP-ID: ' . $suplink);
// paging links
$nextUrl = common_local_url('ApiTimelineUser',
array('format' => $this->format,
'id' => $this->target->id),
array('max_id' => $this->next_id));
$lastNotice = $this->notices[0];
$lastId = $lastNotice->id;
$prevUrl = common_local_url('ApiTimelineUser',
array('format' => $this->format,
'id' => $this->target->id),
array('since_id' => $lastId));
$firstUrl = common_local_url('ApiTimelineUser',
array('format' => $this->format,
'id' => $this->target->id));
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switch($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':
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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'));
}
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$atom->addEntryFromNotices($this->notices);
$this->raw($atom->getString());
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break;
case 'json':
$this->showJsonTimeline($this->notices);
break;
case 'as':
header('Content-Type: ' . ActivityStreamJSONDocument::CONTENT_TYPE);
$doc = new ActivityStreamJSONDocument($this->auth_user);
$doc->setTitle($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:
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// TRANS: Client error displayed when coming across a non-supported API method.
$this->clientError(_('API method not found.'), $code = 404);
}
}
/**
* Get notices
*
* @return array notices
*/
function getNotices()
{
$notices = array();
$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;
}
/**
* We expose AtomPub here, so non-GET/HEAD reqs must be read/write.
*
* @param array $args other arguments
*
* @return boolean true
*/
function isReadOnly($args)
{
return ($_SERVER['REQUEST_METHOD'] == 'GET' || $_SERVER['REQUEST_METHOD'] == 'HEAD');
}
/**
* When was this feed last modified?
*
* @return string datestamp of the latest notice in the stream
*/
function lastModified()
{
if (!empty($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
*/
function etag()
{
if (!empty($this->notices) && (count($this->notices) > 0)) {
$last = count($this->notices) - 1;
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return '"' . implode(
':',
array($this->arg('action'),
common_user_cache_hash($this->auth_user),
common_language(),
$this->target->id,
strtotime($this->notices[0]->created),
strtotime($this->notices[$last]->created))
)
. '"';
}
return null;
}
function handlePost()
{
if (empty($this->auth_user) ||
$this->auth_user->id != $this->target->id) {
// TRANS: Client error displayed trying to add a notice to another user's timeline.
$this->clientError(_('Only the user can add to their own timeline.'));
}
// Only handle posts for Atom
if ($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);
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$saved = null;
if (Event::handle('StartAtomPubNewActivity', array(&$activity, $this->target->getUser(), &$saved))) {
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if ($activity->verb != ActivityVerb::POST) {
// TRANS: Client error displayed when not using the POST verb. Do not translate POST.
$this->clientError(_('Can only handle POST activities.'));
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}
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$note = $activity->objects[0];
if (!in_array($note->type, array(ActivityObject::NOTE,
ActivityObject::BLOGENTRY,
ActivityObject::STATUS))) {
// TRANS: Client error displayed when using an unsupported activity object type.
// TRANS: %s is the unsupported activity object type.
$this->clientError(sprintf(_('Cannot handle activity object type "%s".'),
$note->type));
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}
$saved = $this->postNote($activity);
Event::handle('EndAtomPubNewActivity', array($activity, $this->target->getUser(), $saved));
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}
if (!empty($saved)) {
header('HTTP/1.1 201 Created');
header("Location: " . common_local_url('ApiStatusesShow', array('id' => $saved->id,
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'format' => 'atom')));
$this->showSingleAtomStatus($saved);
}
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}
function postNote($activity)
{
$note = $activity->objects[0];
// Use summary as fallback for content
if (!empty($note->content)) {
$sourceContent = $note->content;
} else if (!empty($note->summary)) {
$sourceContent = $note->summary;
} else if (!empty($note->title)) {
$sourceContent = $note->title;
} else {
// @fixme fetch from $sourceUrl?
// TRANS: Client error displayed when posting a notice without content through the API.
// TRANS: %d is the notice ID (number).
$this->clientError(sprintf(_('No content for notice %d.'), $note->id));
}
// Get (safe!) HTML and text versions of the content
$rendered = $this->purify($sourceContent);
$content = common_strip_html($rendered);
$shortened = $this->auth_user->shortenLinks($content);
$options = array('is_local' => Notice::LOCAL_PUBLIC,
'rendered' => $rendered,
'replies' => array(),
'groups' => array(),
'tags' => array(),
'urls' => array());
// accept remote URI (not necessarily a good idea)
common_debug("Note ID is {$note->id}");
if (!empty($note->id)) {
$notice = Notice::getKV('uri', trim($note->id));
if (!empty($notice)) {
// TRANS: Client error displayed when using another format than AtomPub.
// TRANS: %s is the notice URI.
$this->clientError(sprintf(_('Notice with URI "%s" already exists.'), $note->id));
}
common_log(LOG_NOTICE, "Saving client-supplied notice URI '$note->id'");
$options['uri'] = $note->id;
}
// accept remote create time (also maybe not such a good idea)
if (!empty($activity->time)) {
common_log(LOG_NOTICE, "Saving client-supplied create time {$activity->time}");
$options['created'] = common_sql_date($activity->time);
}
// Check for optional attributes...
if ($activity->context instanceof ActivityContext) {
foreach ($activity->context->attention as $uri=>$type) {
try {
$profile = Profile::fromUri($uri);
if ($profile->isGroup()) {
$options['groups'][] = $profile->id;
} else {
$options['replies'][] = $uri;
}
} catch (UnknownUriException $e) {
common_log(LOG_WARNING, sprintf('AtomPub post with unknown attention URI %s', $uri));
}
}
// Maintain direct reply associations
// @fixme what about conversation ID?
if (!empty($activity->context->replyToID)) {
$orig = Notice::getKV('uri',
$activity->context->replyToID);
if (!empty($orig)) {
$options['reply_to'] = $orig->id;
}
}
$location = $activity->context->location;
if ($location) {
$options['lat'] = $location->lat;
$options['lon'] = $location->lon;
if ($location->location_id) {
$options['location_ns'] = $location->location_ns;
$options['location_id'] = $location->location_id;
}
}
}
// Atom categories <-> hashtags
foreach ($activity->categories as $cat) {
if ($cat->term) {
$term = common_canonical_tag($cat->term);
if ($term) {
$options['tags'][] = $term;
}
}
}
// Atom enclosures -> attachment URLs
foreach ($activity->enclosures as $href) {
// @fixme save these locally or....?
$options['urls'][] = $href;
}
$saved = Notice::saveNew($this->target->id,
$content,
'atompub', // TODO: deal with this
$options);
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return $saved;
}
function purify($content)
{
require_once INSTALLDIR.'/extlib/htmLawed/htmLawed.php';
$config = array('safe' => 1,
'deny_attribute' => 'id,style,on*');
return htmLawed($content, $config);
}
}