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         var $auth_user;
  25
  26         function handle($args) {
  27                 parent::handle($args);
  28         }
  29
  30         function twitter_user_array($profile, $get_notice=false) {
  31
  32                 $twitter_user = array();
  33
  34                 $twitter_user['name'] = $profile->getBestName();
  35                 $twitter_user['followers_count'] = $this->count_subscriptions($profile);
  36                 $twitter_user['screen_name'] = $profile->nickname;
  37                 $twitter_user['description'] = ($profile->bio) ? $profile->bio : NULL;
  38                 $twitter_user['location'] = ($profile->location) ? $profile->location : NULL;
  39                 $twitter_user['id'] = intval($profile->id);
  40
  41                 $avatar = $profile->getAvatar(AVATAR_STREAM_SIZE);
  42
  43                 $twitter_user['profile_image_url'] = ($avatar) ? common_avatar_display_url($avatar) : common_default_avatar(AVATAR_STREAM_SIZE);
  44                 $twitter_user['protected'] = 'false'; # not supported by Laconica yet
  45                 $twitter_user['url'] = ($profile->homepage) ? $profile->homepage : NULL;
  46
  47                 if ($get_notice) {
  48                         $notice = $profile->getCurrentNotice();
  49                         if ($notice) {
  50                                 # don't get user!
  51                                 $twitter_user['status'] = $this->twitter_status_array($notice, false);
  52                         }
  53                 }
  54
  55                 return $twitter_user;
  56         }
  57
  58         function twitter_status_array($notice, $include_user=true) {
  59
  60                 $profile = $notice->getProfile();
  61
  62                 $twitter_status = array();
  63                 $twitter_status['text'] = $notice->content;
  64                 $twitter_status['truncated'] = 'false'; # Not possible on Laconica
  65                 $twitter_status['created_at'] = $this->date_twitter($notice->created);
  66                 $twitter_status['in_reply_to_status_id'] = ($notice->reply_to) ? intval($notice->reply_to) : NULL;
  67                 $twitter_status['source'] = $this->source_link($notice->source);
  68                 $twitter_status['id'] = intval($notice->id);
  69                 $twitter_status['in_reply_to_user_id'] = ($notice->reply_to) ? $this->replier_by_reply(intval($notice->reply_to)) : NULL;
  70
  71                 if (isset($this->auth_user)) {
  72                         common_debug("auth user set: " . $this->auth_user->nickname);
  73                         $twitter_status['favorited'] = ($this->auth_user->hasFave($notice)) ? 'true' : 'false';
  74                 } else {
  75                         common_debug("no auth user set");
  76                         $twitter_status['favorited'] = 'false';
  77                 }
  78
  79                 if ($include_user) {
  80                         # Don't get notice (recursive!)
  81                         $twitter_user = $this->twitter_user_array($profile, false, $user);
  82                         $twitter_status['user'] = $twitter_user;
  83                 }
  84
  85                 return $twitter_status;
  86         }
  87
  88         function twitter_rss_entry_array($notice) {
  89
  90                 $profile = $notice->getProfile();
  91
  92                 $server = common_config('site', 'server');
  93                 $entry = array();
  94
  95                 $entry['content'] = $profile->nickname . ': ' . $notice->content;
  96                 $entry['title'] = $entry['content'];
  97                 $entry['link'] = common_local_url('shownotice', array('notice' => $notice->id));
  98                 $entry['published'] = common_date_iso8601($notice->created);
  99                 $entry['id'] = "tag:$server,2008:$entry[link]";
 100                 $entry['updated'] = $entry['published'];
 101
 102                 # RSS Item specific
 103                 $entry['description'] = $entry['content'];
 104                 $entry['pubDate'] = common_date_rfc2822($notice->created);
 105                 $entry['guid'] = $entry['link'];
 106
 107                 return $entry;
 108         }
 109
 110         function twitter_rss_dmsg_array($message) {
 111
 112                 $server = common_config('site', 'server');
 113                 $entry = array();
 114
 115                 $entry['title'] = sprintf('Message from %s to %s',
 116                         $message->getFrom()->nickname, $message->getTo()->nickname);
 117
 118                 $entry['content'] = $message->content;
 119                 $entry['link'] = $message->uri;
 120                 $entry['published'] = common_date_iso8601($message->created);
 121                 $entry['id'] = "tag:$server,2008:$entry[link]";
 122                 $entry['updated'] = $entry['published'];
 123
 124                 # RSS Item specific
 125                 $entry['description'] = $message->content;
 126                 $entry['pubDate'] = common_date_rfc2822($message->created);
 127                 $entry['guid'] = $entry['link'];
 128
 129                 return $entry;
 130         }
 131
 132         function twitter_dmsg_array($message) {
 133
 134                 $twitter_dm = array();
 135
 136                 $from_profile = $message->getFrom();
 137                 $to_profile = $message->getTo();
 138
 139                 $twitter_dm['id'] = $message->id;
 140                 $twitter_dm['sender_id'] = $message->from_profile;
 141                 $twitter_dm['text'] = $message->content;
 142                 $twitter_dm['recipient_id'] = $message->to_profile;
 143                 $twitter_dm['created_at'] = $this->date_twitter($message->created);
 144                 $twitter_dm['sender_screen_name'] = $from_profile->nickname;
 145                 $twitter_dm['recipient_screen_name'] = $to_profile->nickname;
 146                 $twitter_dm['sender'] = $this->twitter_user_array($from_profile, false);
 147                 $twitter_dm['recipient'] = $this->twitter_user_array($to_profile, false);
 148
 149                 return $twitter_dm;
 150         }
 151
 152         function show_twitter_xml_status($twitter_status) {
 153                 common_element_start('status');
 154                 foreach($twitter_status as $element => $value) {
 155                         if ($element == 'user') {
 156                                 $this->show_twitter_xml_user($twitter_status['user']);
 157                         } else {
 158                                 common_element($element, NULL, $value);
 159                         }
 160                 }
 161                 common_element_end('status');
 162         }
 163
 164         function show_twitter_xml_user($twitter_user, $role='user') {
 165                 common_element_start($role);
 166                 foreach($twitter_user as $element => $value) {
 167                         if ($element == 'status') {
 168                                 $this->show_twitter_xml_status($twitter_user['status']);
 169                         } else {
 170                                 common_element($element, NULL, $value);
 171                         }
 172                 }
 173                 common_element_end($role);
 174         }
 175
 176         function show_twitter_rss_item($entry) {
 177                 common_element_start('item');
 178                 common_element('title', NULL, $entry['title']);
 179                 common_element('description', NULL, $entry['description']);
 180                 common_element('pubDate', NULL, $entry['pubDate']);
 181                 common_element('guid', NULL, $entry['guid']);
 182                 common_element('link', NULL, $entry['link']);
 183                 common_element_end('item');
 184         }
 185
 186         function show_twitter_atom_entry($entry) {
 187             common_element_start('entry');
 188                 common_element('title', NULL, $entry['title']);
 189                 common_element('content', array('type' => 'html'), $entry['title']);
 190                 common_element('id', NULL, $entry['id']);
 191                 common_element('published', NULL, $entry['published']);
 192                 common_element('updated', NULL, $entry['updated']);
 193                 common_element('link', array('href' => $entry['link'], 'rel' => 'alternate', 'type' => 'text/html'), NULL);
 194                 common_element_end('entry');
 195         }
 196
 197         function show_json_objects($objects) {
 198                 print(json_encode($objects));
 199         }
 200
 201         function show_single_xml_status($notice) {
 202                 $this->init_document('xml');
 203                 $twitter_status = $this->twitter_status_array($notice);
 204                 $this->show_twitter_xml_status($twitter_status);
 205                 $this->end_document('xml');
 206         }
 207
 208         function show_single_json_status($notice) {
 209                 $this->init_document('json');
 210                 $status = $this->twitter_status_array($notice);
 211                 $this->show_json_objects($status);
 212                 $this->end_document('json');
 213         }
 214
 215         function show_single_xml_dmsg($message) {
 216                 $this->init_document('xml');
 217                 $dmsg = $this->twitter_dmsg_array($message);
 218                 $this->show_twitter_xml_dmsg($dmsg);
 219                 $this->end_document('xml');
 220         }
 221
 222         function show_single_json_dmsg($message) {
 223                 $this->init_document('json');
 224                 $dmsg = $this->twitter_dmsg_array($message);
 225                 $this->show_json_objects($dmsg);
 226                 $this->end_document('json');
 227         }
 228
 229         function show_twitter_xml_dmsg($twitter_dm) {
 230                 common_element_start('direct_message');
 231                 foreach($twitter_dm as $element => $value) {
 232                         if ($element == 'sender' || $element == 'recipient') {
 233                                 $this->show_twitter_xml_user($value, $element);
 234                         } else {
 235                                 common_element($element, NULL, $value);
 236                         }
 237                 }
 238                 common_element_end('direct_message');
 239         }
 240
 241         function show_xml_timeline($notice) {
 242
 243                 $this->init_document('xml');
 244                 common_element_start('statuses', array('type' => 'array'));
 245
 246                 if (is_array($notice)) {
 247                         foreach ($notice as $n) {
 248                                 $twitter_status = $this->twitter_status_array($n);
 249                                 $this->show_twitter_xml_status($twitter_status);
 250                         }
 251                 } else {
 252                         while ($notice->fetch()) {
 253                                 $twitter_status = $this->twitter_status_array($notice);
 254                                 $this->show_twitter_xml_status($twitter_status);
 255                         }
 256                 }
 257
 258                 common_element_end('statuses');
 259                 $this->end_document('xml');
 260         }
 261
 262         function show_rss_timeline($notice, $title, $link, $subtitle) {
 263
 264                 $this->init_document('rss');
 265
 266                 common_element_start('channel');
 267                 common_element('title', NULL, $title);
 268                 common_element('link', NULL, $link);
 269                 common_element('description', NULL, $subtitle);
 270                 common_element('language', NULL, 'en-us');
 271                 common_element('ttl', NULL, '40');
 272
 273
 274                 if (is_array($notice)) {
 275                         foreach ($notice as $n) {
 276                                 $entry = $this->twitter_rss_entry_array($n);
 277                                 $this->show_twitter_rss_item($entry);
 278                         }
 279                 } else {
 280                         while ($notice->fetch()) {
 281                                 $entry = $this->twitter_rss_entry_array($notice);
 282                                 $this->show_twitter_rss_item($entry);
 283                         }
 284                 }
 285
 286                 common_element_end('channel');
 287                 $this->end_twitter_rss();
 288         }
 289
 290         function show_atom_timeline($notice, $title, $id, $link, $subtitle=NULL) {
 291
 292                 $this->init_document('atom');
 293
 294                 common_element('title', NULL, $title);
 295                 common_element('id', NULL, $id);
 296                 common_element('link', array('href' => $link, 'rel' => 'alternate', 'type' => 'text/html'), NULL);
 297                 common_element('subtitle', NULL, $subtitle);
 298
 299                 if (is_array($notice)) {
 300                         foreach ($notice as $n) {
 301                                 $entry = $this->twitter_rss_entry_array($n);
 302                                 $this->show_twitter_atom_entry($entry);
 303                         }
 304                 } else {
 305                         while ($notice->fetch()) {
 306                                 $entry = $this->twitter_rss_entry_array($notice);
 307                                 $this->show_twitter_atom_entry($entry);
 308                         }
 309                 }
 310
 311                 $this->end_document('atom');
 312
 313         }
 314
 315         function show_json_timeline($notice) {
 316
 317                 $this->init_document('json');
 318
 319                 $statuses = array();
 320
 321                 if (is_array($notice)) {
 322                         foreach ($notice as $n) {
 323                                 $twitter_status = $this->twitter_status_array($n);
 324                                 array_push($statuses, $twitter_status);
 325                         }
 326                 } else {
 327                         while ($notice->fetch()) {
 328                                 $twitter_status = $this->twitter_status_array($notice);
 329                                 array_push($statuses, $twitter_status);
 330                         }
 331                 }
 332
 333                 $this->show_json_objects($statuses);
 334
 335                 $this->end_document('json');
 336         }
 337
 338         // Anyone know what date format this is?
 339         // Twitter's dates look like this: "Mon Jul 14 23:52:38 +0000 2008" -- Zach
 340         function date_twitter($dt) {
 341                 $t = strtotime($dt);
 342                 return date("D M d G:i:s O Y", $t);
 343         }
 344
 345         function replier_by_reply($reply_id) {
 346                 $notice = Notice::staticGet($reply_id);
 347                 if ($notice) {
 348                         $profile = $notice->getProfile();
 349                         if ($profile) {
 350                                 return intval($profile->id);
 351                         } else {
 352                                 common_debug('Can\'t find a profile for notice: ' . $notice->id, __FILE__);
 353                         }
 354                 } else {
 355                         common_debug("Can't get notice: $reply_id", __FILE__);
 356                 }
 357                 return NULL;
 358         }
 359
 360         // XXX: Candidate for a general utility method somewhere?
 361         function count_subscriptions($profile) {
 362
 363                 $count = 0;
 364                 $sub = new Subscription();
 365                 $sub->subscribed = $profile->id;
 366
 367                 $count = $sub->find();
 368
 369                 if ($count > 0) {
 370                         return $count - 1;
 371                 } else {
 372                         return 0;
 373                 }
 374         }
 375
 376         function init_document($type='xml') {
 377                 switch ($type) {
 378                  case 'xml':
 379                         header('Content-Type: application/xml; charset=utf-8');
 380                         common_start_xml();
 381                         break;
 382                  case 'json':
 383                         header('Content-Type: application/json; charset=utf-8');
 384
 385                         // Check for JSONP callback
 386                         $callback = $this->arg('callback');
 387                         if ($callback) {
 388                                 print $callback . '(';
 389                         }
 390                         break;
 391                  case 'rss':
 392                         header("Content-Type: application/rss+xml; charset=utf-8");
 393                         $this->init_twitter_rss();
 394                         break;
 395                  case 'atom':
 396                         header('Content-Type: application/atom+xml; charset=utf-8');
 397                         $this->init_twitter_atom();
 398                         break;
 399                  default:
 400                         $this->client_error(_('Not a supported data format.'));
 401                         break;
 402                 }
 403
 404                 return;
 405         }
 406
 407         function end_document($type='xml') {
 408                 switch ($type) {
 409                  case 'xml':
 410                         common_end_xml();
 411                         break;
 412                  case 'json':
 413
 414                         // Check for JSONP callback
 415                         $callback = $this->arg('callback');
 416                         if ($callback) {
 417                                 print ')';
 418                         }
 419                         break;
 420                  case 'rss':
 421                         $this->end_twitter_rss();
 422                         break;
 423                  case 'atom':
 424                         $this->end_twitter_rss();
 425                         break;
 426                  default:
 427                         $this->client_error(_('Not a supported data format.'));
 428                         break;
 429                 }
 430                 return;
 431         }
 432
 433         function client_error($msg, $code = 400, $content_type = 'json') {
 434
 435                 static $status = array(400 => 'Bad Request',
 436                                                            401 => 'Unauthorized',
 437                                                            402 => 'Payment Required',
 438                                                            403 => 'Forbidden',
 439                                                            404 => 'Not Found',
 440                                                            405 => 'Method Not Allowed',
 441                                                            406 => 'Not Acceptable',
 442                                                            407 => 'Proxy Authentication Required',
 443                                                            408 => 'Request Timeout',
 444                                                            409 => 'Conflict',
 445                                                            410 => 'Gone',
 446                                                            411 => 'Length Required',
 447                                                            412 => 'Precondition Failed',
 448                                                            413 => 'Request Entity Too Large',
 449                                                            414 => 'Request-URI Too Long',
 450                                                            415 => 'Unsupported Media Type',
 451                                                            416 => 'Requested Range Not Satisfiable',
 452                                                            417 => 'Expectation Failed');
 453
 454                 $action = $this->trimmed('action');
 455
 456                 common_debug("User error '$code' on '$action': $msg", __FILE__);
 457
 458                 if (!array_key_exists($code, $status)) {
 459                         $code = 400;
 460                 }
 461
 462                 $status_string = $status[$code];
 463                 header('HTTP/1.1 '.$code.' '.$status_string);
 464
 465                 if ($content_type == 'xml') {
 466                         $this->init_document('xml');
 467                         common_element_start('hash');
 468                         common_element('error', NULL, $msg);
 469                         common_element('request', NULL, $_SERVER['REQUEST_URI']);
 470                         common_element_end('hash');
 471                         $this->end_document('xml');
 472                 } else {
 473                         $this->init_document('json');
 474                         $error_array = array('error' => $msg, 'request' => $_SERVER['REQUEST_URI']);
 475                         print(json_encode($error_array));
 476                         $this->end_document('json');
 477                 }
 478
 479         }
 480
 481         function init_twitter_rss() {
 482                 common_start_xml();
 483                 common_element_start('rss', array('version' => '2.0'));
 484         }
 485
 486         function end_twitter_rss() {
 487                 common_element_end('rss');
 488                 common_end_xml();
 489         }
 490
 491         function init_twitter_atom() {
 492                 common_start_xml();
 493                 common_element_start('feed', array('xmlns' => 'http://www.w3.org/2005/Atom', 'xml:lang' => 'en-US'));
 494         }
 495
 496         function end_twitter_atom() {
 497                 common_end_xml();
 498                 common_element_end('feed');
 499         }
 500
 501         function show_profile($profile, $content_type='xml', $notice=NULL) {
 502                 $profile_array = $this->twitter_user_array($profile, true);
 503                 switch ($content_type) {
 504                  case 'xml':
 505                         $this->show_twitter_xml_user($profile_array);
 506                         break;
 507                  case 'json':
 508                         $this->show_json_objects($profile_array);
 509                         break;
 510                  default:
 511                         $this->client_error(_('Not a supported data format.'));
 512                         return;
 513                 }
 514                 return;
 515         }
 516
 517         function get_user($id, $apidata=NULL) {
 518                 if (!$id) {
 519                         return $apidata['user'];
 520                 } else if (is_numeric($id)) {
 521                         return User::staticGet($id);
 522                 } else {
 523                         $nickname = common_canonical_nickname($id);
 524                         return User::staticGet('nickname', $nickname);
 525                 }
 526         }
 527
 528         function get_profile($id) {
 529                 if (is_numeric($id)) {
 530                         return Profile::staticGet($id);
 531                 } else {
 532                         $user = User::staticGet('nickname', $id);
 533                         if ($user) {
 534                                 return $user->getProfile();
 535                         } else {
 536                                 return NULL;
 537                         }
 538                 }
 539         }
 540
 541         function source_link($source) {
 542                 $source_name = _($source);
 543                 switch ($source) {
 544                  case 'web':
 545                  case 'xmpp':
 546                  case 'mail':
 547                  case 'omb':
 548                  case 'api':
 549                         break;
 550                  default:
 551                         $ns = Notice_source::staticGet($source);
 552                         if ($ns) {
 553                                 $source_name = '<a href="' . $ns->url . '">' . $ns->name . '</a>';
 554                         }
 555                         break;
 556                 }
 557                 return $source_name;
 558         }
 559
 560 }