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<?php
/*
* Laconica - a distributed open-source microblogging tool
* Copyright (C) 2008, Controlez-Vous, 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('LACONICA')) { exit(1); }
define('LISTENER', 1);
define('LISTENEE', -1);
define('BOTH', 0);
class FoafAction extends Action
{
function is_readonly()
{
return true;
}
function handle($args)
{
parent::handle($args);
$nickname = $this->trimmed('nickname');
$user = User::staticGet('nickname', $nickname);
if (!$user) {
common_user_error(_('No such user.'), 404);
return;
}
$profile = $user->getProfile();
if (!$profile) {
common_server_error(_('User has no profile.'), 500);
return;
}
header('Content-Type: application/rdf+xml');
common_start_xml();
common_element_start('rdf:RDF', array('xmlns:rdf' =>
'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
'xmlns:rdfs' =>
'http://www.w3.org/2000/01/rdf-schema#',
'xmlns:geo' =>
'http://www.w3.org/2003/01/geo/wgs84_pos#',
'xmlns' => 'http://xmlns.com/foaf/0.1/'));
# This is the document about the user
$this->show_ppd('', $user->uri);
# XXX: might not be a person
common_element_start('Person', array('rdf:about' =>
$user->uri));
common_element('mbox_sha1sum', null, sha1('mailto:' . $user->email));
if ($profile->fullname) {
common_element('name', null, $profile->fullname);
}
if ($profile->homepage) {
common_element('homepage', array('rdf:resource' => $profile->homepage));
}
if ($profile->bio) {
common_element('rdfs:comment', null, $profile->bio);
}
# XXX: more structured location data
if ($profile->location) {
common_element_start('based_near');
common_element_start('geo:SpatialThing');
common_element('name', null, $profile->location);
common_element_end('geo:SpatialThing');
common_element_end('based_near');
}
$this->show_microblogging_account($profile, common_root_url());
$avatar = $profile->getOriginalAvatar();
if ($avatar) {
common_element_start('img');
common_element_start('Image', array('rdf:about' => $avatar->url));
foreach (array(AVATAR_PROFILE_SIZE, AVATAR_STREAM_SIZE, AVATAR_MINI_SIZE) as $size) {
$scaled = $profile->getAvatar($size);
if (!$scaled->original) { # sometimes the original has one of our scaled sizes
common_element_start('thumbnail');
common_element('Image', array('rdf:about' => $scaled->url));
common_element_end('thumbnail');
}
}
common_element_end('Image');
common_element_end('img');
}
# Get people user is subscribed to
$person = array();
$sub = new Subscription();
$sub->subscriber = $profile->id;
$sub->whereAdd('subscriber != subscribed');
if ($sub->find()) {
while ($sub->fetch()) {
if ($sub->token) {
$other = Remote_profile::staticGet('id', $sub->subscribed);
} else {
$other = User::staticGet('id', $sub->subscribed);
}
if (!$other) {
common_debug('Got a bad subscription: '.print_r($sub,true));
continue;
}
common_element('knows', array('rdf:resource' => $other->uri));
$person[$other->uri] = array(LISTENEE, $other);
}
}
# Get people who subscribe to user
$sub = new Subscription();
$sub->subscribed = $profile->id;
$sub->whereAdd('subscriber != subscribed');
if ($sub->find()) {
while ($sub->fetch()) {
if ($sub->token) {
$other = Remote_profile::staticGet('id', $sub->subscriber);
} else {
$other = User::staticGet('id', $sub->subscriber);
}
if (!$other) {
common_debug('Got a bad subscription: '.print_r($sub,true));
continue;
}
if (array_key_exists($other->uri, $person)) {
$person[$other->uri][0] = BOTH;
} else {
$person[$other->uri] = array(LISTENER, $other);
}
}
}
common_element_end('Person');
foreach ($person as $uri => $p) {
$foaf_url = null;
if ($p[1] instanceof User) {
$foaf_url = common_local_url('foaf', array('nickname' => $p[1]->nickname));
}
$profile = Profile::staticGet($p[1]->id);
common_element_start('Person', array('rdf:about' => $uri));
if ($p[0] == LISTENER || $p[0] == BOTH) {
common_element('knows', array('rdf:resource' => $user->uri));
}
$this->show_microblogging_account($profile, ($p[1] instanceof User) ?
common_root_url() : null);
if ($foaf_url) {
common_element('rdfs:seeAlso', array('rdf:resource' => $foaf_url));
}
common_element_end('Person');
if ($foaf_url) {
$this->show_ppd($foaf_url, $uri);
}
}
common_element_end('rdf:RDF');
}
function show_ppd($foaf_url, $person_uri)
{
common_element_start('PersonalProfileDocument', array('rdf:about' => $foaf_url));
common_element('maker', array('rdf:resource' => $person_uri));
common_element('primaryTopic', array('rdf:resource' => $person_uri));
common_element_end('PersonalProfileDocument');
}
function show_microblogging_account($profile, $service=null)
{
# Their account
common_element_start('holdsAccount');
common_element_start('OnlineAccount');
if ($service) {
common_element('accountServiceHomepage', array('rdf:resource' =>
$service));
}
common_element('accountName', null, $profile->nickname);
common_element('homepage', array('rdf:resource' => $profile->profileurl));
common_element_end('OnlineAccount');
common_element_end('holdsAccount');
}
}
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