Merge branch '0.9-release'

* 0.9-release: (874 commits)
  Removed call to NewDirectMessage() until IE return is fixed i.e.,
  Don't show flag user button your own profile
  Fixed HXR response for flag user
  Using the right form class name
  Using common_redirect
  Left a form_data class of a <ul> in the user admin panel
  Added validation to fields in user admin panel
  Added a user admin panel
  Added mobile logos for default and identica themes
  Changed gif to png
  Changed this to action. THANKS zach!
  Doing content negotiation only once
  Add execute bit to pingqueuehandler
  Localisation updates for !StatusNet from !translatewiki.net
  Use the browser's geolocation API to set the location on the notice form
  Add geometa library, and include it.
  Add location form elements to the noticeform, and save their values on submission
  Use the $user object nickname, as login name doesnt have to == nickname anymore with plugins such as ldap/etc
  Revert "Re added NICKNAME_FMT constant to router.php."
  Moved most path and server settings to a new paths admin panel
  ...

Conflicts:
	js/util.js
	locale/it_IT/LC_MESSAGES/statusnet.mo
	locale/mk_MK/LC_MESSAGES/statusnet.mo
	locale/mk_MK/LC_MESSAGES/statusnet.po
	locale/pt_BR/LC_MESSAGES/statusnet.mo
	locale/vi_VN/LC_MESSAGES/statusnet.mo
	plugins/InfiniteScroll/infinitescroll.js
	plugins/Realtime/realtimeupdate.js

1 files changed, 1267 insertions, 0 deletions

diff --git a/lib/api.php b/lib/api.php
new file mode 100644
index 000000000..e2ea87b43
--- /dev/null
+++ b/lib/api.php
@@ -0,0 +1,1267 @@
+<?php
+/**
+ * StatusNet, the distributed open-source microblogging tool
+ *
+ * Base API action
+ *
+ * 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
+ * @author    Craig Andrews <candrews@integralblue.com>
+ * @author    Dan Moore <dan@moore.cx>
+ * @author    Evan Prodromou <evan@status.net>
+ * @author    Jeffery To <jeffery.to@gmail.com>
+ * @author    Toby Inkster <mail@tobyinkster.co.uk>
+ * @author    Zach Copley <zach@status.net>
+ * @copyright 2009 StatusNet, Inc.
+ * @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);
+}
+
+/**
+ * Contains most of the Twitter-compatible API output functions.
+ *
+ * @category API
+ * @package  StatusNet
+ * @author   Craig Andrews <candrews@integralblue.com>
+ * @author   Dan Moore <dan@moore.cx>
+ * @author   Evan Prodromou <evan@status.net>
+ * @author   Jeffery To <jeffery.to@gmail.com>
+ * @author   Toby Inkster <mail@tobyinkster.co.uk>
+ * @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 ApiAction extends Action
+{
+     var $format   = null;
+     var $user     = null;
+     var $page     = null;
+     var $count    = null;
+     var $max_id   = null;
+     var $since_id = null;
+     var $since    = null;
+
+    /**
+     * Initialization.
+     *
+     * @param array $args Web and URL arguments
+     *
+     * @return boolean false if user doesn't exist
+     */
+
+    function prepare($args)
+    {
+        parent::prepare($args);
+
+        $this->format   = $this->arg('format');
+        $this->page     = (int)$this->arg('page', 1);
+        $this->count    = (int)$this->arg('count', 20);
+        $this->max_id   = (int)$this->arg('max_id', 0);
+        $this->since_id = (int)$this->arg('since_id', 0);
+        $this->since    = $this->arg('since');
+
+        return true;
+    }
+
+    /**
+     * Handle a request
+     *
+     * @param array $args Arguments from $_REQUEST
+     *
+     * @return void
+     */
+
+    function handle($args)
+    {
+        parent::handle($args);
+    }
+
+    /**
+     * Overrides XMLOutputter::element to write booleans as strings (true|false).
+     * See that method's documentation for more info.
+     *
+     * @param string $tag     Element type or tagname
+     * @param array  $attrs   Array of element attributes, as
+     *                        key-value pairs
+     * @param string $content string content of the element
+     *
+     * @return void
+     */
+    function element($tag, $attrs=null, $content=null)
+    {
+        if (is_bool($content)) {
+            $content = ($content ? 'true' : 'false');
+        }
+
+        return parent::element($tag, $attrs, $content);
+    }
+
+    function twitterUserArray($profile, $get_notice=false)
+    {
+        $twitter_user = array();
+
+        $twitter_user['id'] = intval($profile->id);
+        $twitter_user['name'] = $profile->getBestName();
+        $twitter_user['screen_name'] = $profile->nickname;
+        $twitter_user['location'] = ($profile->location) ? $profile->location : null;
+        $twitter_user['description'] = ($profile->bio) ? $profile->bio : null;
+
+        $avatar = $profile->getAvatar(AVATAR_STREAM_SIZE);
+        $twitter_user['profile_image_url'] = ($avatar) ? $avatar->displayUrl() :
+            Avatar::defaultImage(AVATAR_STREAM_SIZE);
+
+        $twitter_user['url'] = ($profile->homepage) ? $profile->homepage : null;
+        $twitter_user['protected'] = false; # not supported by StatusNet yet
+        $twitter_user['followers_count'] = $profile->subscriberCount();
+
+        $defaultDesign = Design::siteDesign();
+        $design        = null;
+        $user          = $profile->getUser();
+
+        // Note: some profiles don't have an associated user
+
+        if (!empty($user)) {
+            $design = $user->getDesign();
+        }
+
+        if (empty($design)) {
+            $design = $defaultDesign;
+        }
+
+        $color = Design::toWebColor(empty($design->backgroundcolor) ? $defaultDesign->backgroundcolor : $design->backgroundcolor);
+        $twitter_user['profile_background_color'] = ($color == null) ? '' : '#'.$color->hexValue();
+        $color = Design::toWebColor(empty($design->textcolor) ? $defaultDesign->textcolor : $design->textcolor);
+        $twitter_user['profile_text_color'] = ($color == null) ? '' : '#'.$color->hexValue();
+        $color = Design::toWebColor(empty($design->linkcolor) ? $defaultDesign->linkcolor : $design->linkcolor);
+        $twitter_user['profile_link_color'] = ($color == null) ? '' : '#'.$color->hexValue();
+        $color = Design::toWebColor(empty($design->sidebarcolor) ? $defaultDesign->sidebarcolor : $design->sidebarcolor);
+        $twitter_user['profile_sidebar_fill_color'] = ($color == null) ? '' : '#'.$color->hexValue();
+        $twitter_user['profile_sidebar_border_color'] = '';
+
+        $twitter_user['friends_count'] = $profile->subscriptionCount();
+
+        $twitter_user['created_at'] = $this->dateTwitter($profile->created);
+
+        $twitter_user['favourites_count'] = $profile->faveCount(); // British spelling!
+
+        $timezone = 'UTC';
+
+        if ($user->timezone) {
+            $timezone = $user->timezone;
+        }
+
+        $t = new DateTime;
+        $t->setTimezone(new DateTimeZone($timezone));
+
+        $twitter_user['utc_offset'] = $t->format('Z');
+        $twitter_user['time_zone'] = $timezone;
+
+        $twitter_user['profile_background_image_url']
+            = empty($design->backgroundimage)
+            ? '' : ($design->disposition & BACKGROUND_ON)
+            ? Design::url($design->backgroundimage) : '';
+
+        $twitter_user['profile_background_tile']
+            = empty($design->disposition)
+            ? '' : ($design->disposition & BACKGROUND_TILE) ? 'true' : 'false';
+
+        $twitter_user['statuses_count'] = $profile->noticeCount();
+
+        // Is the requesting user following this user?
+        $twitter_user['following'] = false;
+        $twitter_user['notifications'] = false;
+
+        if (isset($apidata['user'])) {
+
+            $twitter_user['following'] = $apidata['user']->isSubscribed($profile);
+
+            // Notifications on?
+            $sub = Subscription::pkeyGet(array('subscriber' =>
+                $apidata['user']->id, 'subscribed' => $profile->id));
+
+            if ($sub) {
+                $twitter_user['notifications'] = ($sub->jabber || $sub->sms);
+            }
+        }
+
+        if ($get_notice) {
+            $notice = $profile->getCurrentNotice();
+            if ($notice) {
+                # don't get user!
+                $twitter_user['status'] = $this->twitterStatusArray($notice, false);
+            }
+        }
+
+        return $twitter_user;
+    }
+
+    function twitterStatusArray($notice, $include_user=true)
+    {
+        $profile = $notice->getProfile();
+
+        $twitter_status = array();
+        $twitter_status['text'] = $notice->content;
+        $twitter_status['truncated'] = false; # Not possible on StatusNet
+        $twitter_status['created_at'] = $this->dateTwitter($notice->created);
+        $twitter_status['in_reply_to_status_id'] = ($notice->reply_to) ?
+            intval($notice->reply_to) : null;
+        $twitter_status['source'] = $this->sourceLink($notice->source);
+        $twitter_status['id'] = intval($notice->id);
+
+        $replier_profile = null;
+
+        if ($notice->reply_to) {
+            $reply = Notice::staticGet(intval($notice->reply_to));
+            if ($reply) {
+                $replier_profile = $reply->getProfile();
+            }
+        }
+
+        $twitter_status['in_reply_to_user_id'] =
+            ($replier_profile) ? intval($replier_profile->id) : null;
+        $twitter_status['in_reply_to_screen_name'] =
+            ($replier_profile) ? $replier_profile->nickname : null;
+
+        if (isset($notice->lat) && isset($notice->lon)) {
+            // This is the format that GeoJSON expects stuff to be in
+            $twitter_status['geo'] = array('type' => 'Point',
+                                           'coordinates' => array((float) $notice->lat,
+                                                                  (float) $notice->lon));
+        } else {
+            $twitter_status['geo'] = null;
+        }
+
+        if (isset($this->auth_user)) {
+            $twitter_status['favorited'] = $this->auth_user->hasFave($notice);
+        } else {
+            $twitter_status['favorited'] = false;
+        }
+
+        // Enclosures
+        $attachments = $notice->attachments();
+
+        if (!empty($attachments)) {
+
+            $twitter_status['attachments'] = array();
+
+            foreach ($attachments as $attachment) {
+                if ($attachment->isEnclosure()) {
+                    $enclosure = array();
+                    $enclosure['url'] = $attachment->url;
+                    $enclosure['mimetype'] = $attachment->mimetype;
+                    $enclosure['size'] = $attachment->size;
+                    $twitter_status['attachments'][] = $enclosure;
+                }
+            }
+        }
+
+        if ($include_user) {
+            # Don't get notice (recursive!)
+            $twitter_user = $this->twitterUserArray($profile, false);
+            $twitter_status['user'] = $twitter_user;
+        }
+
+        return $twitter_status;
+    }
+
+    function twitterGroupArray($group)
+    {
+        $twitter_group=array();
+        $twitter_group['id']=$group->id;
+        $twitter_group['url']=$group->permalink();
+        $twitter_group['nickname']=$group->nickname;
+        $twitter_group['fullname']=$group->fullname;
+        $twitter_group['homepage_url']=$group->homepage_url;
+        $twitter_group['original_logo']=$group->original_logo;
+        $twitter_group['homepage_logo']=$group->homepage_logo;
+        $twitter_group['stream_logo']=$group->stream_logo;
+        $twitter_group['mini_logo']=$group->mini_logo;
+        $twitter_group['homepage']=$group->homepage;
+        $twitter_group['description']=$group->description;
+        $twitter_group['location']=$group->location;
+        $twitter_group['created']=$this->dateTwitter($group->created);
+        $twitter_group['modified']=$this->dateTwitter($group->modified);
+        return $twitter_group;
+    }
+
+    function twitterRssGroupArray($group)
+    {
+        $entry = array();
+        $entry['content']=$group->description;
+        $entry['title']=$group->nickname;
+        $entry['link']=$group->permalink();
+        $entry['published']=common_date_iso8601($group->created);
+        $entry['updated']==common_date_iso8601($group->modified);
+        $taguribase = common_config('integration', 'groupuri');
+        $entry['id'] = "group:$groupuribase:$entry[link]";
+
+        $entry['description'] = $entry['content'];
+        $entry['pubDate'] = common_date_rfc2822($group->created);
+        $entry['guid'] = $entry['link'];
+
+        return $entry;
+    }
+
+    function twitterRssEntryArray($notice)
+    {
+        $profile = $notice->getProfile();
+        $entry = array();
+
+        // We trim() to avoid extraneous whitespace in the output
+
+        $entry['content'] = common_xml_safe_str(trim($notice->rendered));
+        $entry['title'] = $profile->nickname . ': ' . common_xml_safe_str(trim($notice->content));
+        $entry['link'] = common_local_url('shownotice', array('notice' => $notice->id));
+        $entry['published'] = common_date_iso8601($notice->created);
+
+        $taguribase = common_config('integration', 'taguri');
+        $entry['id'] = "tag:$taguribase:$entry[link]";
+
+        $entry['updated'] = $entry['published'];
+        $entry['author'] = $profile->getBestName();
+
+        // Enclosures
+        $attachments = $notice->attachments();
+        $enclosures = array();
+
+        foreach ($attachments as $attachment) {
+            $enclosure_o=$attachment->getEnclosure();
+            if ($enclosure_o) {
+                 $enclosure = array();
+                 $enclosure['url'] = $enclosure_o->url;
+                 $enclosure['mimetype'] = $enclosure_o->mimetype;
+                 $enclosure['size'] = $enclosure_o->size;
+                 $enclosures[] = $enclosure;
+            }
+        }
+
+        if (!empty($enclosures)) {
+            $entry['enclosures'] = $enclosures;
+        }
+
+        // Tags/Categories
+        $tag = new Notice_tag();
+        $tag->notice_id = $notice->id;
+        if ($tag->find()) {
+            $entry['tags']=array();
+            while ($tag->fetch()) {
+                $entry['tags'][]=$tag->tag;
+            }
+        }
+        $tag->free();
+
+        // RSS Item specific
+        $entry['description'] = $entry['content'];
+        $entry['pubDate'] = common_date_rfc2822($notice->created);
+        $entry['guid'] = $entry['link'];
+
+        if (isset($notice->lat) && isset($notice->lon)) {
+            // This is the format that GeoJSON expects stuff to be in.
+            // showGeoRSS() below uses it for XML output, so we reuse it
+            $entry['geo'] = array('type' => 'Point',
+                                  'coordinates' => array((float) $notice->lat,
+                                                         (float) $notice->lon));
+        } else {
+            $entry['geo'] = null;
+        }
+
+        return $entry;
+    }
+
+    function twitterRelationshipArray($source, $target)
+    {
+        $relationship = array();
+
+        $relationship['source'] =
+            $this->relationshipDetailsArray($source, $target);
+        $relationship['target'] =
+            $this->relationshipDetailsArray($target, $source);
+
+        return array('relationship' => $relationship);
+    }
+
+    function relationshipDetailsArray($source, $target)
+    {
+        $details = array();
+
+        $details['screen_name'] = $source->nickname;
+        $details['followed_by'] = $target->isSubscribed($source);
+        $details['following'] = $source->isSubscribed($target);
+
+        $notifications = false;
+
+        if ($source->isSubscribed($target)) {
+
+            $sub = Subscription::pkeyGet(array('subscriber' =>
+                $source->id, 'subscribed' => $target->id));
+
+            if (!empty($sub)) {
+                $notifications = ($sub->jabber || $sub->sms);
+            }
+        }
+
+        $details['notifications_enabled'] = $notifications;
+        $details['blocking'] = $source->hasBlocked($target);
+        $details['id'] = $source->id;
+
+        return $details;
+    }
+
+    function showTwitterXmlRelationship($relationship)
+    {
+        $this->elementStart('relationship');
+
+        foreach($relationship as $element => $value) {
+            if ($element == 'source' || $element == 'target') {
+                $this->elementStart($element);
+                $this->showXmlRelationshipDetails($value);
+                $this->elementEnd($element);
+            }
+        }
+
+        $this->elementEnd('relationship');
+    }
+
+    function showXmlRelationshipDetails($details)
+    {
+        foreach($details as $element => $value) {
+            $this->element($element, null, $value);
+        }
+    }
+
+    function showTwitterXmlStatus($twitter_status)
+    {
+        $this->elementStart('status');
+        foreach($twitter_status as $element => $value) {
+            switch ($element) {
+            case 'user':
+                $this->showTwitterXmlUser($twitter_status['user']);
+                break;
+            case 'text':
+                $this->element($element, null, common_xml_safe_str($value));
+                break;
+            case 'attachments':
+                $this->showXmlAttachments($twitter_status['attachments']);
+                break;
+            case 'geo':
+                $this->showGeoRSS($value);
+                break;
+            default:
+                $this->element($element, null, $value);
+            }
+        }
+        $this->elementEnd('status');
+    }
+
+    function showTwitterXmlGroup($twitter_group)
+    {
+        $this->elementStart('group');
+        foreach($twitter_group as $element => $value) {
+            $this->element($element, null, $value);
+        }
+        $this->elementEnd('group');
+    }
+
+    function showTwitterXmlUser($twitter_user, $role='user')
+    {
+        $this->elementStart($role);
+        foreach($twitter_user as $element => $value) {
+            if ($element == 'status') {
+                $this->showTwitterXmlStatus($twitter_user['status']);
+            } else {
+                $this->element($element, null, $value);
+            }
+        }
+        $this->elementEnd($role);
+    }
+
+    function showXmlAttachments($attachments) {
+        if (!empty($attachments)) {
+            $this->elementStart('attachments', array('type' => 'array'));
+            foreach ($attachments as $attachment) {
+                $attrs = array();
+                $attrs['url'] = $attachment['url'];
+                $attrs['mimetype'] = $attachment['mimetype'];
+                $attrs['size'] = $attachment['size'];
+                $this->element('enclosure', $attrs, '');
+            }
+            $this->elementEnd('attachments');
+        }
+    }
+
+    function showGeoRSS($geo)
+    {
+        if (empty($geo)) {
+            // empty geo element
+            $this->element('geo');
+        } else {
+            $this->elementStart('geo', array('xmlns:georss' => 'http://www.georss.org/georss'));
+            $this->element('georss:point', null, $geo['coordinates'][0] . ' ' . $geo['coordinates'][1]);
+            $this->elementEnd('geo');
+        }
+    }
+
+    function showTwitterRssItem($entry)
+    {
+        $this->elementStart('item');
+        $this->element('title', null, $entry['title']);
+        $this->element('description', null, $entry['description']);
+        $this->element('pubDate', null, $entry['pubDate']);
+        $this->element('guid', null, $entry['guid']);
+        $this->element('link', null, $entry['link']);
+
+        # RSS only supports 1 enclosure per item
+        if(array_key_exists('enclosures', $entry) and !empty($entry['enclosures'])){
+            $enclosure = $entry['enclosures'][0];
+            $this->element('enclosure', array('url'=>$enclosure['url'],'type'=>$enclosure['mimetype'],'length'=>$enclosure['size']), null);
+        }
+
+        if(array_key_exists('tags', $entry)){
+            foreach($entry['tags'] as $tag){
+                $this->element('category', null,$tag);
+            }
+        }
+
+        $this->showGeoRSS($entry['geo']);
+        $this->elementEnd('item');
+    }
+
+    function showJsonObjects($objects)
+    {
+        print(json_encode($objects));
+    }
+
+    function showSingleXmlStatus($notice)
+    {
+        $this->initDocument('xml');
+        $twitter_status = $this->twitterStatusArray($notice);
+        $this->showTwitterXmlStatus($twitter_status);
+        $this->endDocument('xml');
+    }
+
+    function show_single_json_status($notice)
+    {
+        $this->initDocument('json');
+        $status = $this->twitterStatusArray($notice);
+        $this->showJsonObjects($status);
+        $this->endDocument('json');
+    }
+
+    function showXmlTimeline($notice)
+    {
+
+        $this->initDocument('xml');
+        $this->elementStart('statuses', array('type' => 'array'));
+
+        if (is_array($notice)) {
+            foreach ($notice as $n) {
+                $twitter_status = $this->twitterStatusArray($n);
+                $this->showTwitterXmlStatus($twitter_status);
+            }
+        } else {
+            while ($notice->fetch()) {
+                $twitter_status = $this->twitterStatusArray($notice);
+                $this->showTwitterXmlStatus($twitter_status);
+            }
+        }
+
+        $this->elementEnd('statuses');
+        $this->endDocument('xml');
+    }
+
+    function showRssTimeline($notice, $title, $link, $subtitle, $suplink=null)
+    {
+
+        $this->initDocument('rss');
+
+        $this->element('title', null, $title);
+        $this->element('link', null, $link);
+        if (!is_null($suplink)) {
+            // For FriendFeed's SUP protocol
+            $this->element('link', array('xmlns' => 'http://www.w3.org/2005/Atom',
+                                         'rel' => 'http://api.friendfeed.com/2008/03#sup',
+                                         'href' => $suplink,
+                                         'type' => 'application/json'));
+        }
+        $this->element('description', null, $subtitle);
+        $this->element('language', null, 'en-us');
+        $this->element('ttl', null, '40');
+
+        if (is_array($notice)) {
+            foreach ($notice as $n) {
+                $entry = $this->twitterRssEntryArray($n);
+                $this->showTwitterRssItem($entry);
+            }
+        } else {
+            while ($notice->fetch()) {
+                $entry = $this->twitterRssEntryArray($notice);
+                $this->showTwitterRssItem($entry);
+            }
+        }
+
+        $this->endTwitterRss();
+    }
+
+    function showAtomTimeline($notice, $title, $id, $link, $subtitle=null, $suplink=null, $selfuri=null)
+    {
+
+        $this->initDocument('atom');
+
+        $this->element('title', null, $title);
+        $this->element('id', null, $id);
+        $this->element('link', array('href' => $link, 'rel' => 'alternate', 'type' => 'text/html'), null);
+
+        if (!is_null($suplink)) {
+            # For FriendFeed's SUP protocol
+            $this->element('link', array('rel' => 'http://api.friendfeed.com/2008/03#sup',
+                                         'href' => $suplink,
+                                         'type' => 'application/json'));
+        }
+
+        if (!is_null($selfuri)) {
+            $this->element('link', array('href' => $selfuri,
+                'rel' => 'self', 'type' => 'application/atom+xml'), null);
+        }
+
+        $this->element('updated', null, common_date_iso8601('now'));
+        $this->element('subtitle', null, $subtitle);
+
+        if (is_array($notice)) {
+            foreach ($notice as $n) {
+                $this->raw($n->asAtomEntry());
+            }
+        } else {
+            while ($notice->fetch()) {
+                $this->raw($notice->asAtomEntry());
+            }
+        }
+
+        $this->endDocument('atom');
+
+    }
+
+    function showRssGroups($group, $title, $link, $subtitle)
+    {
+
+        $this->initDocument('rss');
+
+        $this->element('title', null, $title);
+        $this->element('link', null, $link);
+        $this->element('description', null, $subtitle);
+        $this->element('language', null, 'en-us');
+        $this->element('ttl', null, '40');
+
+        if (is_array($group)) {
+            foreach ($group as $g) {
+                $twitter_group = $this->twitterRssGroupArray($g);
+                $this->showTwitterRssItem($twitter_group);
+            }
+        } else {
+            while ($group->fetch()) {
+                $twitter_group = $this->twitterRssGroupArray($group);
+                $this->showTwitterRssItem($twitter_group);
+            }
+        }
+
+        $this->endTwitterRss();
+    }
+
+    function showTwitterAtomEntry($entry)
+    {
+        $this->elementStart('entry');
+        $this->element('title', null, $entry['title']);
+        $this->element('content', array('type' => 'html'), $entry['content']);
+        $this->element('id', null, $entry['id']);
+        $this->element('published', null, $entry['published']);
+        $this->element('updated', null, $entry['updated']);
+        $this->element('link', array('type' => 'text/html',
+                                     'href' => $entry['link'],
+                                     'rel' => 'alternate'));
+        $this->element('link', array('type' => $entry['avatar-type'],
+                                     'href' => $entry['avatar'],
+                                     'rel' => 'image'));
+        $this->elementStart('author');
+
+        $this->element('name', null, $entry['author-name']);
+        $this->element('uri', null, $entry['author-uri']);
+
+        $this->elementEnd('author');
+        $this->elementEnd('entry');
+    }
+
+    function showXmlDirectMessage($dm)
+    {
+        $this->elementStart('direct_message');
+        foreach($dm as $element => $value) {
+            switch ($element) {
+            case 'sender':
+            case 'recipient':
+                $this->showTwitterXmlUser($value, $element);
+                break;
+            case 'text':
+                $this->element($element, null, common_xml_safe_str($value));
+                break;
+            default:
+                $this->element($element, null, $value);
+                break;
+            }
+        }
+        $this->elementEnd('direct_message');
+    }
+
+    function directMessageArray($message)
+    {
+        $dmsg = array();
+
+        $from_profile = $message->getFrom();
+        $to_profile = $message->getTo();
+
+        $dmsg['id'] = $message->id;
+        $dmsg['sender_id'] = $message->from_profile;
+        $dmsg['text'] = trim($message->content);
+        $dmsg['recipient_id'] = $message->to_profile;
+        $dmsg['created_at'] = $this->dateTwitter($message->created);
+        $dmsg['sender_screen_name'] = $from_profile->nickname;
+        $dmsg['recipient_screen_name'] = $to_profile->nickname;
+        $dmsg['sender'] = $this->twitterUserArray($from_profile, false);
+        $dmsg['recipient'] = $this->twitterUserArray($to_profile, false);
+
+        return $dmsg;
+    }
+
+    function rssDirectMessageArray($message)
+    {
+        $entry = array();
+
+        $from = $message->getFrom();
+
+        $entry['title'] = sprintf('Message from %s to %s',
+            $from->nickname, $message->getTo()->nickname);
+
+        $entry['content'] = common_xml_safe_str($message->rendered);
+        $entry['link'] = common_local_url('showmessage', array('message' => $message->id));
+        $entry['published'] = common_date_iso8601($message->created);
+
+        $taguribase = common_config('integration', 'taguri');
+
+        $entry['id'] = "tag:$taguribase:$entry[link]";
+        $entry['updated'] = $entry['published'];
+
+        $entry['author-name'] = $from->getBestName();
+        $entry['author-uri'] = $from->homepage;
+
+        $avatar = $from->getAvatar(AVATAR_STREAM_SIZE);
+
+        $entry['avatar']      = (!empty($avatar)) ? $avatar->url : Avatar::defaultImage(AVATAR_STREAM_SIZE);
+        $entry['avatar-type'] = (!empty($avatar)) ? $avatar->mediatype : 'image/png';
+
+        // RSS item specific
+
+        $entry['description'] = $entry['content'];
+        $entry['pubDate'] = common_date_rfc2822($message->created);
+        $entry['guid'] = $entry['link'];
+
+        return $entry;
+    }
+
+    function showSingleXmlDirectMessage($message)
+    {
+        $this->initDocument('xml');
+        $dmsg = $this->directMessageArray($message);
+        $this->showXmlDirectMessage($dmsg);
+        $this->endDocument('xml');
+    }
+
+    function showSingleJsonDirectMessage($message)
+    {
+        $this->initDocument('json');
+        $dmsg = $this->directMessageArray($message);
+        $this->showJsonObjects($dmsg);
+        $this->endDocument('json');
+    }
+
+    function showAtomGroups($group, $title, $id, $link, $subtitle=null, $selfuri=null)
+    {
+
+        $this->initDocument('atom');
+
+        $this->element('title', null, $title);
+        $this->element('id', null, $id);
+        $this->element('link', array('href' => $link, 'rel' => 'alternate', 'type' => 'text/html'), null);
+
+        if (!is_null($selfuri)) {
+            $this->element('link', array('href' => $selfuri,
+                'rel' => 'self', 'type' => 'application/atom+xml'), null);
+        }
+
+        $this->element('updated', null, common_date_iso8601('now'));
+        $this->element('subtitle', null, $subtitle);
+
+        if (is_array($group)) {
+            foreach ($group as $g) {
+                $this->raw($g->asAtomEntry());
+            }
+        } else {
+            while ($group->fetch()) {
+                $this->raw($group->asAtomEntry());
+            }
+        }
+
+        $this->endDocument('atom');
+
+    }
+
+    function showJsonTimeline($notice)
+    {
+
+        $this->initDocument('json');
+
+        $statuses = array();
+
+        if (is_array($notice)) {
+            foreach ($notice as $n) {
+                $twitter_status = $this->twitterStatusArray($n);
+                array_push($statuses, $twitter_status);
+            }
+        } else {
+            while ($notice->fetch()) {
+                $twitter_status = $this->twitterStatusArray($notice);
+                array_push($statuses, $twitter_status);
+            }
+        }
+
+        $this->showJsonObjects($statuses);
+
+        $this->endDocument('json');
+    }
+
+    function showJsonGroups($group)
+    {
+
+        $this->initDocument('json');
+
+        $groups = array();
+
+        if (is_array($group)) {
+            foreach ($group as $g) {
+                $twitter_group = $this->twitterGroupArray($g);
+                array_push($groups, $twitter_group);
+            }
+        } else {
+            while ($group->fetch()) {
+                $twitter_group = $this->twitterGroupArray($group);
+                array_push($groups, $twitter_group);
+            }
+        }
+
+        $this->showJsonObjects($groups);
+
+        $this->endDocument('json');
+    }
+
+    function showXmlGroups($group)
+    {
+
+        $this->initDocument('xml');
+        $this->elementStart('groups', array('type' => 'array'));
+
+        if (is_array($group)) {
+            foreach ($group as $g) {
+                $twitter_group = $this->twitterGroupArray($g);
+                $this->showTwitterXmlGroup($twitter_group);
+            }
+        } else {
+            while ($group->fetch()) {
+                $twitter_group = $this->twitterGroupArray($group);
+                $this->showTwitterXmlGroup($twitter_group);
+            }
+        }
+
+        $this->elementEnd('groups');
+        $this->endDocument('xml');
+    }
+
+    function showTwitterXmlUsers($user)
+    {
+
+        $this->initDocument('xml');
+        $this->elementStart('users', array('type' => 'array'));
+
+        if (is_array($user)) {
+            foreach ($user as $u) {
+                $twitter_user = $this->twitterUserArray($u);
+                $this->showTwitterXmlUser($twitter_user);
+            }
+        } else {
+            while ($user->fetch()) {
+                $twitter_user = $this->twitterUserArray($user);
+                $this->showTwitterXmlUser($twitter_user);
+            }
+        }
+
+        $this->elementEnd('users');
+        $this->endDocument('xml');
+    }
+
+    function showJsonUsers($user)
+    {
+
+        $this->initDocument('json');
+
+        $users = array();
+
+        if (is_array($user)) {
+            foreach ($user as $u) {
+                $twitter_user = $this->twitterUserArray($u);
+                array_push($users, $twitter_user);
+            }
+        } else {
+            while ($user->fetch()) {
+                $twitter_user = $this->twitterUserArray($user);
+                array_push($users, $twitter_user);
+            }
+        }
+
+        $this->showJsonObjects($users);
+
+        $this->endDocument('json');
+    }
+
+    function showSingleJsonGroup($group)
+    {
+        $this->initDocument('json');
+        $twitter_group = $this->twitterGroupArray($group);
+        $this->showJsonObjects($twitter_group);
+        $this->endDocument('json');
+    }
+
+    function showSingleXmlGroup($group)
+    {
+        $this->initDocument('xml');
+        $twitter_group = $this->twitterGroupArray($group);
+        $this->showTwitterXmlGroup($twitter_group);
+        $this->endDocument('xml');
+    }
+
+    function dateTwitter($dt)
+    {
+        $dateStr = date('d F Y H:i:s', strtotime($dt));
+        $d = new DateTime($dateStr, new DateTimeZone('UTC'));
+        $d->setTimezone(new DateTimeZone(common_timezone()));
+        return $d->format('D M d H:i:s O Y');
+    }
+
+    function initDocument($type='xml')
+    {
+        switch ($type) {
+        case 'xml':
+            header('Content-Type: application/xml; charset=utf-8');
+            $this->startXML();
+            break;
+        case 'json':
+            header('Content-Type: application/json; charset=utf-8');
+
+            // Check for JSONP callback
+            $callback = $this->arg('callback');
+            if ($callback) {
+                print $callback . '(';
+            }
+            break;
+        case 'rss':
+            header("Content-Type: application/rss+xml; charset=utf-8");
+            $this->initTwitterRss();
+            break;
+        case 'atom':
+            header('Content-Type: application/atom+xml; charset=utf-8');
+            $this->initTwitterAtom();
+            break;
+        default:
+            $this->clientError(_('Not a supported data format.'));
+            break;
+        }
+
+        return;
+    }
+
+    function endDocument($type='xml')
+    {
+        switch ($type) {
+        case 'xml':
+            $this->endXML();
+            break;
+        case 'json':
+
+            // Check for JSONP callback
+            $callback = $this->arg('callback');
+            if ($callback) {
+                print ')';
+            }
+            break;
+        case 'rss':
+            $this->endTwitterRss();
+            break;
+        case 'atom':
+            $this->endTwitterRss();
+            break;
+        default:
+            $this->clientError(_('Not a supported data format.'));
+            break;
+        }
+        return;
+    }
+
+    function clientError($msg, $code = 400, $format = 'xml')
+    {
+        $action = $this->trimmed('action');
+
+        common_debug("User error '$code' on '$action': $msg", __FILE__);
+
+        if (!array_key_exists($code, ClientErrorAction::$status)) {
+            $code = 400;
+        }
+
+        $status_string = ClientErrorAction::$status[$code];
+
+        header('HTTP/1.1 '.$code.' '.$status_string);
+
+        if ($format == 'xml') {
+            $this->initDocument('xml');
+            $this->elementStart('hash');
+            $this->element('error', null, $msg);
+            $this->element('request', null, $_SERVER['REQUEST_URI']);
+            $this->elementEnd('hash');
+            $this->endDocument('xml');
+        } elseif ($format == 'json'){
+            $this->initDocument('json');
+            $error_array = array('error' => $msg, 'request' => $_SERVER['REQUEST_URI']);
+            print(json_encode($error_array));
+            $this->endDocument('json');
+        } else {
+
+            // If user didn't request a useful format, throw a regular client error
+            throw new ClientException($msg, $code);
+        }
+    }
+
+    function serverError($msg, $code = 500, $content_type = 'json')
+    {
+        $action = $this->trimmed('action');
+
+        common_debug("Server error '$code' on '$action': $msg", __FILE__);
+
+        if (!array_key_exists($code, ServerErrorAction::$status)) {
+            $code = 400;
+        }
+
+        $status_string = ServerErrorAction::$status[$code];
+
+        header('HTTP/1.1 '.$code.' '.$status_string);
+
+        if ($content_type == 'xml') {
+            $this->initDocument('xml');
+            $this->elementStart('hash');
+            $this->element('error', null, $msg);
+            $this->element('request', null, $_SERVER['REQUEST_URI']);
+            $this->elementEnd('hash');
+            $this->endDocument('xml');
+        } else {
+            $this->initDocument('json');
+            $error_array = array('error' => $msg, 'request' => $_SERVER['REQUEST_URI']);
+            print(json_encode($error_array));
+            $this->endDocument('json');
+        }
+    }
+
+    function initTwitterRss()
+    {
+        $this->startXML();
+        $this->elementStart('rss', array('version' => '2.0', 'xmlns:atom'=>'http://www.w3.org/2005/Atom'));
+        $this->elementStart('channel');
+        Event::handle('StartApiRss', array($this));
+    }
+
+    function endTwitterRss()
+    {
+        $this->elementEnd('channel');
+        $this->elementEnd('rss');
+        $this->endXML();
+    }
+
+    function initTwitterAtom()
+    {
+        $this->startXML();
+        // FIXME: don't hardcode the language here!
+        $this->elementStart('feed', array('xmlns' => 'http://www.w3.org/2005/Atom',
+                                          'xml:lang' => 'en-US',
+                                          'xmlns:thr' => 'http://purl.org/syndication/thread/1.0'));
+        Event::handle('StartApiAtom', array($this));
+    }
+
+    function endTwitterAtom()
+    {
+        $this->elementEnd('feed');
+        $this->endXML();
+    }
+
+    function showProfile($profile, $content_type='xml', $notice=null, $includeStatuses=true)
+    {
+        $profile_array = $this->twitterUserArray($profile, $includeStatuses);
+        switch ($content_type) {
+        case 'xml':
+            $this->showTwitterXmlUser($profile_array);
+            break;
+        case 'json':
+            $this->showJsonObjects($profile_array);
+            break;
+        default:
+            $this->clientError(_('Not a supported data format.'));
+            return;
+        }
+        return;
+    }
+
+    function getTargetUser($id)
+    {
+        if (empty($id)) {
+
+            // Twitter supports these other ways of passing the user ID
+            if (is_numeric($this->arg('id'))) {
+                return User::staticGet($this->arg('id'));
+            } else if ($this->arg('id')) {
+                $nickname = common_canonical_nickname($this->arg('id'));
+                return User::staticGet('nickname', $nickname);
+            } else if ($this->arg('user_id')) {
+                // This is to ensure that a non-numeric user_id still
+                // overrides screen_name even if it doesn't get used
+                if (is_numeric($this->arg('user_id'))) {
+                    return User::staticGet('id', $this->arg('user_id'));
+                }
+            } else if ($this->arg('screen_name')) {
+                $nickname = common_canonical_nickname($this->arg('screen_name'));
+                return User::staticGet('nickname', $nickname);
+            } else {
+                // Fall back to trying the currently authenticated user
+                return $this->auth_user;
+            }
+
+        } else if (is_numeric($id)) {
+            return User::staticGet($id);
+        } else {
+            $nickname = common_canonical_nickname($id);
+            return User::staticGet('nickname', $nickname);
+        }
+    }
+
+    function getTargetGroup($id)
+    {
+        if (empty($id)) {
+            if (is_numeric($this->arg('id'))) {
+                return User_group::staticGet($this->arg('id'));
+            } else if ($this->arg('id')) {
+                $nickname = common_canonical_nickname($this->arg('id'));
+                return User_group::staticGet('nickname', $nickname);
+            } else if ($this->arg('group_id')) {
+                // This is to ensure that a non-numeric user_id still
+                // overrides screen_name even if it doesn't get used
+                if (is_numeric($this->arg('group_id'))) {
+                    return User_group::staticGet('id', $this->arg('group_id'));
+                }
+            } else if ($this->arg('group_name')) {
+                $nickname = common_canonical_nickname($this->arg('group_name'));
+                return User_group::staticGet('nickname', $nickname);
+            }
+
+        } else if (is_numeric($id)) {
+            return User_group::staticGet($id);
+        } else {
+            $nickname = common_canonical_nickname($id);
+            return User_group::staticGet('nickname', $nickname);
+        }
+    }
+
+    function sourceLink($source)
+    {
+        $source_name = _($source);
+        switch ($source) {
+        case 'web':
+        case 'xmpp':
+        case 'mail':
+        case 'omb':
+        case 'api':
+            break;
+        default:
+            $ns = Notice_source::staticGet($source);
+            if ($ns) {
+                $source_name = '<a href="' . $ns->url . '">' . $ns->name . '</a>';
+            }
+            break;
+        }
+        return $source_name;
+    }
+
+    /**
+     * Returns query argument or default value if not found. Certain
+     * parameters used throughout the API are lightly scrubbed and
+     * bounds checked.  This overrides Action::arg().
+     *
+     * @param string $key requested argument
+     * @param string $def default value to return if $key is not provided
+     *
+     * @return var $var
+     */
+    function arg($key, $def=null)
+    {
+
+        // XXX: Do even more input validation/scrubbing?
+
+        if (array_key_exists($key, $this->args)) {
+            switch($key) {
+            case 'page':
+                $page = (int)$this->args['page'];
+                return ($page < 1) ? 1 : $page;
+            case 'count':
+                $count = (int)$this->args['count'];
+                if ($count < 1) {
+                    return 20;
+                } elseif ($count > 200) {
+                    return 200;
+                } else {
+                    return $count;
+                }
+            case 'since_id':
+                $since_id = (int)$this->args['since_id'];
+                return ($since_id < 1) ? 0 : $since_id;
+            case 'max_id':
+                $max_id = (int)$this->args['max_id'];
+                return ($max_id < 1) ? 0 : $max_id;
+            case 'since':
+                return strtotime($this->args['since']);
+            default:
+                return parent::arg($key, $def);
+            }
+        } else {
+            return $def;
+        }
+    }
+
+}