lib/twitterapi.php

   1 <?php
   2 /*
   3  * Laconica - a distributed open-source microblogging tool
   4  * Copyright (C) 2008, Controlez-Vous, 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('LACONICA')) { exit(1); }
  21
  22 class TwitterapiAction extends Action {
  23
  24         function handle($args) {
  25                 parent::handle($args);
  26         }
  27
  28         function twitter_user_array($profile, $get_notice=false) {
  29
  30                 $twitter_user = array();
  31
  32                 $twitter_user['name'] = $profile->getBestName();
  33                 $twitter_user['followers_count'] = $this->count_subscriptions($profile);
  34                 $twitter_user['screen_name'] = $profile->nickname;
  35                 $twitter_user['description'] = ($profile->bio) ? $profile->bio : NULL;
  36                 $twitter_user['location'] = ($profile->location) ? $profile->location : NULL;
  37                 $twitter_user['id'] = intval($profile->id);
  38
  39                 $avatar = $profile->getAvatar(AVATAR_STREAM_SIZE);
  40
  41                 $twitter_user['profile_image_url'] = ($avatar) ? common_avatar_display_url($avatar) : common_default_avatar(AVATAR_STREAM_SIZE);
  42                 $twitter_user['protected'] = 'false'; # not supported by Laconica yet
  43                 $twitter_user['url'] = ($profile->homepage) ? $profile->homepage : NULL;
  44
  45                 if ($get_notice) {
  46                         $notice = $profile->getCurrentNotice();
  47                         if ($notice) {
  48                                 # don't get user!
  49                                 $twitter_user['status'] = $this->twitter_status_array($notice, false);
  50                         }
  51                 }
  52
  53                 return $twitter_user;
  54         }
  55
  56         function twitter_status_array($notice, $get_user=true) {
  57
  58                 $twitter_status = array();
  59
  60                 $twitter_status['text'] = $notice->content;
  61                 $twitter_status['truncated'] = 'false'; # Not possible on Laconica
  62                 $twitter_status['created_at'] = $this->date_twitter($notice->created);
  63                 $twitter_status['in_reply_to_status_id'] = ($notice->reply_to) ? intval($notice->reply_to) : NULL;
  64                 $twitter_status['source'] = $notice->source;
  65                 $twitter_status['id'] = intval($notice->id);
  66                 $twitter_status['in_reply_to_user_id'] = ($notice->reply_to) ? $this->replier_by_reply(intval($notice->reply_to)) : NULL;
  67                 $twitter_status['favorited'] = NULL; # XXX: Not implemented on Laconica yet.
  68
  69                 if ($get_user) {
  70                         $profile = $notice->getProfile();
  71                         # Don't get notice (recursive!)
  72                         $twitter_user = $this->twitter_user_array($profile, false);
  73                         $twitter_status['user'] = $twitter_user;
  74                 }
  75
  76                 return $twitter_status;
  77         }
  78
  79         function twitter_rss_entry_array($notice) {
  80
  81                 $profile = $notice->getProfile();
  82
  83                 $server = common_config('site', 'server');
  84                 $entry = array();
  85
  86                 $entry['content'] = $profile->nickname . ': ' . $notice->content;
  87                 $entry['title'] = $entry['content'];
  88                 $entry['link'] = common_local_url('shownotice', array('notice' => $notice->id));
  89                 $entry['published'] = common_date_iso8601($notice->created);
  90                 $entry['id'] = "tag:$server,2008:$entry[link]";
  91                 $entry['updated'] = $entry['published'];
  92
  93                 # RSS Item specific
  94                 $entry['description'] = $entry['content'];
  95                 $entry['pubDate'] = common_date_rfc2822($notice->created);
  96                 $entry['guid'] = $entry['link'];
  97
  98                 return $entry;
  99         }
 100
 101         function twitter_rss_dmsg_array($message) {
 102
 103                 $server = common_config('site', 'server');
 104                 $entry = array();
 105
 106                 $entry['title'] = sprintf('Message from %s to %s',
 107                         $message->getFrom()->nickname, $message->getTo()->nickname);
 108
 109                 $entry['content'] = $message->content;
 110                 $entry['link'] = $message->uri;
 111                 $entry['published'] = common_date_iso8601($message->created);
 112                 $entry['id'] = "tag:$server,2008:$entry[link]";
 113                 $entry['updated'] = $entry['published'];
 114
 115                 # RSS Item specific
 116                 $entry['description'] = $message->content;
 117                 $entry['pubDate'] = common_date_rfc2822($message->created);
 118                 $entry['guid'] = $entry['link'];
 119
 120                 return $entry;
 121         }
 122
 123
 124         function twitter_dm_array($message) {
 125
 126                 $twitter_dm = array();
 127
 128                 $from_profile = $message->getFrom();
 129                 $to_profile = $message->getTo();
 130
 131                 $twitter_dm['id'] = $message->id;
 132                 $twitter_dm['sender_id'] = $message->from_profile;
 133                 $twitter_dm['text'] = $message->content;
 134                 $twitter_dm['recipient_id'] = $message->to_profile;
 135                 $twitter_dm['created_at'] = $this->date_twitter($message->created);
 136                 $twitter_dm['sender_screen_name'] = $from_profile->nickname;
 137                 $twitter_dm['recipient_screen_name'] = $to_profile->nickname;
 138                 $twitter_dm['sender'] = $this->twitter_user_array($from_profile, false);
 139                 $twitter_dm['recipient'] = $this->twitter_user_array($to_profile, false);
 140
 141                 return $twitter_dm;
 142         }
 143
 144         function show_twitter_xml_status($twitter_status) {
 145                 common_element_start('status');
 146                 foreach($twitter_status as $element => $value) {
 147                         if ($element == 'user') {
 148                                 $this->show_twitter_xml_user($twitter_status['user']);
 149                         } else {
 150                                 common_element($element, NULL, $value);
 151                         }
 152                 }
 153                 common_element_end('status');
 154         }
 155
 156         function show_twitter_xml_user($twitter_user, $role='user') {
 157                 common_element_start($role);
 158                 foreach($twitter_user as $element => $value) {
 159                         if ($element == 'status') {
 160                                 $this->show_twitter_xml_status($twitter_user['status']);
 161                         } else {
 162                                 common_element($element, NULL, $value);
 163                         }
 164                 }
 165                 common_element_end($role);
 166         }
 167
 168         function show_twitter_rss_item($entry) {
 169                 common_element_start('item');
 170                 common_element('title', NULL, $entry['title']);
 171                 common_element('description', NULL, $entry['description']);
 172                 common_element('pubDate', NULL, $entry['pubDate']);
 173                 common_element('guid', NULL, $entry['guid']);
 174                 common_element('link', NULL, $entry['link']);
 175                 common_element_end('item');
 176         }
 177
 178         function show_twitter_atom_entry($entry) {
 179             common_element_start('entry');
 180                 common_element('title', NULL, $entry['title']);
 181                 common_element('content', array('type' => 'html'), $entry['title']);
 182                 common_element('id', NULL, $entry['id']);
 183                 common_element('published', NULL, $entry['published']);
 184                 common_element('updated', NULL, $entry['updated']);
 185                 common_element('link', array('href' => $entry['link'], 'rel' => 'alternate', 'type' => 'text/html'), NULL);
 186                 common_element_end('entry');
 187         }
 188
 189         function show_twitter_json_statuses($twitter_statuses) {
 190                 print(json_encode($twitter_statuses));
 191         }
 192
 193         function show_twitter_json_users($twitter_users) {
 194                 print(json_encode($twitter_users));
 195         }
 196
 197         function show_twitter_json_dmsgs($twitter_dms) {
 198                 print(json_encode($twitter_dms));
 199         }
 200
 201         function show_single_xml_status($notice) {
 202                 $this->init_document('xml');
 203                 $twitter_status = $this->twitter_status_array($notice);
 204                 $this->show_twitter_xml_status($twitter_status);
 205                 $this->end_document('xml');
 206                 exit();
 207         }
 208
 209         function show_single_json_status($notice) {
 210                 $this->init_document('json');
 211                 $status = $this->twitter_status_array($notice);
 212                 $this->show_twitter_json_statuses($status);
 213                 $this->end_document('json');
 214                 exit();
 215         }
 216
 217         function show_twitter_xml_dm($twitter_dm) {
 218                 common_element_start('direct_message');
 219                 foreach($twitter_dm as $element => $value) {
 220                         if ($element == 'sender' || $element == 'recipient') {
 221                                 $this->show_twitter_xml_user($value, $element);
 222                         } else {
 223                                 common_element($element, NULL, $value);
 224                         }
 225                 }
 226                 common_element_end('direct_message');
 227         }
 228
 229         // Anyone know what date format this is?
 230         // Twitter's dates look like this: "Mon Jul 14 23:52:38 +0000 2008" -- Zach
 231         function date_twitter($dt) {
 232                 $t = strtotime($dt);
 233                 return date("D M d G:i:s O Y", $t);
 234         }
 235
 236         function replier_by_reply($reply_id) {
 237                 $notice = Notice::staticGet($reply_id);
 238                 if ($notice) {
 239                         $profile = $notice->getProfile();
 240                         if ($profile) {
 241                                 return intval($profile->id);
 242                         } else {
 243                                 common_debug('Can\'t find a profile for notice: ' . $notice->id, __FILE__);
 244                         }
 245                 } else {
 246                         common_debug("Can't get notice: $reply_id", __FILE__);
 247                 }
 248                 return NULL;
 249         }
 250
 251         // XXX: Candidate for a general utility method somewhere?
 252         function count_subscriptions($profile) {
 253
 254                 $count = 0;
 255                 $sub = new Subscription();
 256                 $sub->subscribed = $profile->id;
 257
 258                 $count = $sub->find();
 259
 260                 if ($count > 0) {
 261                         return $count - 1;
 262                 } else {
 263                         return 0;
 264                 }
 265         }
 266
 267         function init_document($type='xml') {
 268                 switch ($type) {
 269                  case 'xml':
 270                         header('Content-Type: application/xml; charset=utf-8');
 271                         common_start_xml();
 272                         break;
 273                  case 'json':
 274                         header('Content-Type: application/json; charset=utf-8');
 275
 276                         // Check for JSONP callback
 277                         $callback = $this->arg('callback');
 278                         if ($callback) {
 279                                 print $callback . '(';
 280                         }
 281                         break;
 282                  case 'rss':
 283                         header("Content-Type: application/rss+xml; charset=utf-8");
 284                         $this->init_twitter_rss();
 285                         break;
 286                  case 'atom':
 287                         header('Content-Type: application/atom+xml; charset=utf-8');
 288                         $this->init_twitter_atom();
 289                         break;
 290                  default:
 291                         $this->client_error(_('Not a supported data format.'));
 292                         break;
 293                 }
 294
 295                 return;
 296         }
 297
 298         function end_document($type='xml') {
 299                 switch ($type) {
 300                  case 'xml':
 301                         common_end_xml();
 302                         break;
 303                  case 'json':
 304
 305                         // Check for JSONP callback
 306                         $callback = $this->arg('callback');
 307                         if ($callback) {
 308                                 print ')';
 309                         }
 310                         break;
 311                  case 'rss':
 312                         $this->end_twitter_rss();
 313                         break;
 314                  case 'atom':
 315                         $this->end_twitter_rss();
 316                         break;
 317                  default:
 318                         $this->client_error(_('Not a supported data format.'));
 319                         break;
 320                 }
 321                 return;
 322         }
 323
 324         function client_error($msg, $code = 400, $content_type = 'json') {
 325
 326                 static $status = array(400 => 'Bad Request',
 327                                                            401 => 'Unauthorized',
 328                                                            402 => 'Payment Required',
 329                                                            403 => 'Forbidden',
 330                                                            404 => 'Not Found',
 331                                                            405 => 'Method Not Allowed',
 332                                                            406 => 'Not Acceptable',
 333                                                            407 => 'Proxy Authentication Required',
 334                                                            408 => 'Request Timeout',
 335                                                            409 => 'Conflict',
 336                                                            410 => 'Gone',
 337                                                            411 => 'Length Required',
 338                                                            412 => 'Precondition Failed',
 339                                                            413 => 'Request Entity Too Large',
 340                                                            414 => 'Request-URI Too Long',
 341                                                            415 => 'Unsupported Media Type',
 342                                                            416 => 'Requested Range Not Satisfiable',
 343                                                            417 => 'Expectation Failed');
 344
 345                 $action = $this->trimmed('action');
 346
 347                 common_debug("User error '$code' on '$action': $msg", __FILE__);
 348
 349                 if (!array_key_exists($code, $status)) {
 350                         $code = 400;
 351                 }
 352
 353                 $status_string = $status[$code];
 354                 header('HTTP/1.1 '.$code.' '.$status_string);
 355
 356                 if ($content_type == 'xml') {
 357                         $this->init_document('xml');
 358                         common_element_start('hash');
 359                         common_element('error', NULL, $msg);
 360                         common_element('request', NULL, $_SERVER['REQUEST_URI']);
 361                         common_element_end('hash');
 362                         $this->end_document('xml');
 363                 } else {
 364                         $this->init_document('json');
 365                         $error_array = array('error' => $msg, 'request' => $_SERVER['REQUEST_URI']);
 366                         print(json_encode($error_array));
 367                         $this->end_document('json');
 368                 }
 369
 370                 exit();
 371         }
 372
 373         function init_twitter_rss() {
 374                 common_start_xml();
 375                 common_element_start('rss', array('version' => '2.0'));
 376         }
 377
 378         function end_twitter_rss() {
 379                 common_element_end('rss');
 380                 common_end_xml();
 381         }
 382
 383         function init_twitter_atom() {
 384                 common_start_xml();
 385                 common_element_start('feed', array('xmlns' => 'http://www.w3.org/2005/Atom', 'xml:lang' => 'en-US'));
 386         }
 387
 388         function end_twitter_atom() {
 389                 common_end_xml();
 390                 common_element_end('feed');
 391         }
 392
 393         function show_profile($profile, $content_type='xml', $notice=NULL) {
 394                 $profile_array = $this->twitter_user_array($profile, true);
 395                 switch ($content_type) {
 396                  case 'xml':
 397                         $this->show_twitter_xml_user($profile_array);
 398                         break;
 399                  case 'json':
 400                         $this->show_twitter_json_users($profile_array);
 401                         break;
 402                  default:
 403                         $this->client_error(_('Not a supported data format.'));
 404                         return;
 405                 }
 406                 return;
 407         }
 408 }