actions/foaf.php

   1 <?php
   2 /*
   3  * StatusNet - the distributed open-source microblogging tool
   4  * Copyright (C) 2008, 2009, StatusNet, Inc.
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU Affero General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU Affero General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Affero General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
  21
  22 define('LISTENER', 1);
  23 define('LISTENEE', -1);
  24 define('BOTH', 0);
  25
  26 class FoafAction extends Action
  27 {
  28     function isReadOnly($args)
  29     {
  30         return true;
  31     }
  32
  33     function prepare($args)
  34     {
  35         parent::prepare($args);
  36
  37         $nickname_arg = $this->arg('nickname');
  38
  39         if (empty($nickname_arg)) {
  40             $this->clientError(_('No such user.'), 404);
  41             return false;
  42         }
  43
  44         $this->nickname = common_canonical_nickname($nickname_arg);
  45
  46         // Permanent redirect on non-canonical nickname
  47
  48         if ($nickname_arg != $this->nickname) {
  49             common_redirect(common_local_url('foaf',
  50                                              array('nickname' => $this->nickname)),
  51                             301);
  52             return false;
  53         }
  54
  55         $this->user = User::staticGet('nickname', $this->nickname);
  56
  57         if (!$this->user) {
  58             $this->clientError(_('No such user.'), 404);
  59             return false;
  60         }
  61
  62         $this->profile = $this->user->getProfile();
  63
  64         if (!$this->profile) {
  65             $this->serverError(_('User has no profile.'), 500);
  66             return false;
  67         }
  68
  69         return true;
  70     }
  71
  72     function handle($args)
  73     {
  74         parent::handle($args);
  75
  76         header('Content-Type: application/rdf+xml');
  77
  78         $this->startXML();
  79         $this->elementStart('rdf:RDF', array('xmlns:rdf' =>
  80                                               'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
  81                                               'xmlns:rdfs' =>
  82                                               'http://www.w3.org/2000/01/rdf-schema#',
  83                                               'xmlns:geo' =>
  84                                               'http://www.w3.org/2003/01/geo/wgs84_pos#',
  85                                               'xmlns:bio' =>
  86                                               'http://purl.org/vocab/bio/0.1/',
  87                                               'xmlns:sioc' =>
  88                                               'http://rdfs.org/sioc/ns#',
  89                                               'xmlns' => 'http://xmlns.com/foaf/0.1/'));
  90
  91         // This is the document about the user
  92
  93         $this->showPpd('', $this->user->uri);
  94
  95         // Would be nice to tell if they were a Person or not (e.g. a #person usertag?)
  96         $this->elementStart('Agent', array('rdf:about' =>
  97                                              $this->user->uri));
  98         $this->element('mbox_sha1sum', null, sha1('mailto:' . $this->user->email));
  99         if ($this->profile->fullname) {
 100             $this->element('name', null, $this->profile->fullname);
 101         }
 102         if ($this->profile->homepage) {
 103             $this->element('homepage', array('rdf:resource' => $this->profile->homepage));
 104         }
 105         if ($this->profile->profileurl) {
 106             $this->element('weblog', array('rdf:resource' => $this->profile->profileurl));
 107         }
 108         if ($this->profile->bio) {
 109             $this->element('bio:olb', null, $this->profile->bio);
 110         }
 111
 112         $location = $this->profile->getLocation();
 113         if ($location) {
 114             $attr = array();
 115             if ($location->getRdfURL()) {
 116                 $attr['rdf:about'] = $location->getRdfURL();
 117             }
 118             $location_name = $location->getName();
 119
 120             $this->elementStart('based_near');
 121             $this->elementStart('geo:SpatialThing', $attr);
 122             if ($location_name) {
 123                 $this->element('name', null, $location_name);
 124             }
 125             if ($location->lat) {
 126                 $this->element('geo:lat', null, $location->lat);
 127             }
 128             if ($location->lon) {
 129                 $this->element('geo:long', null, $location->lat);
 130             }
 131             if ($location->getURL()) {
 132                 $this->element('page', array('rdf:resource'=>$location->getURL()));
 133             }
 134             $this->elementEnd('geo:SpatialThing');
 135             $this->elementEnd('based_near');
 136         }
 137
 138         $avatar = $this->profile->getOriginalAvatar();
 139         if ($avatar) {
 140             $this->elementStart('img');
 141             $this->elementStart('Image', array('rdf:about' => $avatar->url));
 142             foreach (array(AVATAR_PROFILE_SIZE, AVATAR_STREAM_SIZE, AVATAR_MINI_SIZE) as $size) {
 143                 $scaled = $this->profile->getAvatar($size);
 144                 if (!$scaled->original) { // sometimes the original has one of our scaled sizes
 145                     $this->elementStart('thumbnail');
 146                     $this->element('Image', array('rdf:about' => $scaled->url));
 147                     $this->elementEnd('thumbnail');
 148                 }
 149             }
 150             $this->elementEnd('Image');
 151             $this->elementEnd('img');
 152         }
 153
 154         $person = $this->showMicrobloggingAccount($this->profile,
 155                                      common_root_url(), $this->user->uri, false);
 156
 157         // Get people who subscribe to user
 158
 159         $sub = new Subscription();
 160         $sub->subscribed = $this->profile->id;
 161         $sub->whereAdd('subscriber != subscribed');
 162
 163         if ($sub->find()) {
 164             while ($sub->fetch()) {
 165                 if ($sub->token) {
 166                     $other = Remote_profile::staticGet('id', $sub->subscriber);
 167                     $profile = Profile::staticGet('id', $sub->subscriber);
 168                 } else {
 169                     $other = User::staticGet('id', $sub->subscriber);
 170                     $profile = Profile::staticGet('id', $sub->subscriber);
 171                 }
 172                 if (!$other) {
 173                     common_debug('Got a bad subscription: '.print_r($sub,true));
 174                     continue;
 175                 }
 176                 if (array_key_exists($other->uri, $person)) {
 177                     $person[$other->uri][0] = BOTH;
 178                 } else {
 179                     $person[$other->uri] = array(LISTENER,
 180                                                  $other->id,
 181                                                  $profile->nickname,
 182                                                  (empty($sub->token)) ? 'User' : 'Remote_profile');
 183                 }
 184                 $other->free();
 185                 $other = null;
 186                 unset($other);
 187                 $profile->free();
 188                 $profile = null;
 189                 unset($profile);
 190             }
 191         }
 192
 193         $sub->free();
 194         $sub = null;
 195         unset($sub);
 196
 197         foreach ($person as $uri => $p) {
 198             list($type, $id, $nickname, $cls) = $p;
 199             if ($type == BOTH) {
 200                 $this->element('knows', array('rdf:resource' => $uri));
 201             }
 202         }
 203
 204         $this->elementEnd('Agent');
 205
 206
 207         foreach ($person as $uri => $p) {
 208             $foaf_url = null;
 209             list($type, $id, $nickname, $cls) = $p;
 210             if ($cls == 'User') {
 211                 $foaf_url = common_local_url('foaf', array('nickname' => $nickname));
 212             }
 213             $profile = Profile::staticGet($id);
 214             $this->elementStart('Agent', array('rdf:about' => $uri));
 215             if ($type == BOTH) {
 216                 $this->element('knows', array('rdf:resource' => $this->user->uri));
 217             }
 218             $this->showMicrobloggingAccount($profile,
 219                                    ($cls == 'User') ? common_root_url() : null,
 220                                    $uri,
 221                                    true);
 222             if ($foaf_url) {
 223                 $this->element('rdfs:seeAlso', array('rdf:resource' => $foaf_url));
 224             }
 225             $this->elementEnd('Agent');
 226             if ($foaf_url) {
 227                 $this->showPpd($foaf_url, $uri);
 228             }
 229             $profile->free();
 230             $profile = null;
 231             unset($profile);
 232         }
 233
 234         $this->elementEnd('rdf:RDF');
 235         $this->endXML();
 236     }
 237
 238     function showPpd($foaf_url, $person_uri)
 239     {
 240         $this->elementStart('PersonalProfileDocument', array('rdf:about' => $foaf_url));
 241         $this->element('maker', array('rdf:resource' => $person_uri));
 242         $this->element('primaryTopic', array('rdf:resource' => $person_uri));
 243         $this->elementEnd('PersonalProfileDocument');
 244     }
 245
 246     function showMicrobloggingAccount($profile, $service=null, $useruri=null, $isSubscriber=false)
 247     {
 248         $attr = array();
 249         if ($useruri) {
 250             $attr['rdf:about'] = $useruri . '#acct';
 251         }
 252
 253         // Their account
 254         $this->elementStart('account');
 255         $this->elementStart('OnlineAccount', $attr);
 256         if ($service) {
 257             $this->element('accountServiceHomepage', array('rdf:resource' =>
 258                                                            $service));
 259         }
 260         $this->element('accountName', null, $profile->nickname);
 261         $this->element('accountProfilePage', array('rdf:resource' => $profile->profileurl));
 262         if ($useruri) {
 263             $this->element('sioc:account_of', array('rdf:resource'=>$useruri));
 264         }
 265
 266         $person = array();
 267
 268         if ($isSubscriber) {
 269              $this->element('sioc:follows', array('rdf:resource'=>$this->user->uri . '#acct'));
 270         } else {
 271             // Get people user is subscribed to
 272             $sub = new Subscription();
 273             $sub->subscriber = $profile->id;
 274             $sub->whereAdd('subscriber != subscribed');
 275
 276             if ($sub->find()) {
 277                 while ($sub->fetch()) {
 278                     if (!empty($sub->token)) {
 279                         $other = Remote_profile::staticGet('id', $sub->subscribed);
 280                         $profile = Profile::staticGet('id', $sub->subscribed);
 281                     } else {
 282                         $other = User::staticGet('id', $sub->subscribed);
 283                         $profile = Profile::staticGet('id', $sub->subscribed);
 284                     }
 285                     if (empty($other)) {
 286                         common_debug('Got a bad subscription: '.print_r($sub,true));
 287                         continue;
 288                     }
 289                     $this->element('sioc:follows', array('rdf:resource' => $other->uri.'#acct'));
 290                     $person[$other->uri] = array(LISTENEE,
 291                                                  $other->id,
 292                                                  $profile->nickname,
 293                                                  (empty($sub->token)) ? 'User' : 'Remote_profile');
 294                     $other->free();
 295                     $other = null;
 296                     unset($other);
 297                     $profile->free();
 298                     $profile = null;
 299                     unset($profile);
 300                 }
 301             }
 302
 303             $sub->free();
 304             $sub = null;
 305             unset($sub);
 306         }
 307
 308         $this->elementEnd('OnlineAccount');
 309         $this->elementEnd('account');
 310
 311         return $person;
 312     }
 313 }