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'] = $profile->nickname . ': ' . common_xml_safe_str($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                 $entry['content'] = common_xml_safe_str($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'] = $entry['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 => $value) {
 155                         switch ($element) {
 156                         case 'user':
 157                                 $this->show_twitter_xml_user($twitter_status['user']);
 158                                 break;
 159                         case 'text':
 160                                 common_element($element, NULL, common_xml_safe_str($value));
 161                                 break;
 162                         default:
 163                                 common_element($element, NULL, $value);
 164                         }
 165                 }
 166                 common_element_end('status');
 167         }
 168
 169         function show_twitter_xml_user($twitter_user, $role='user') {
 170                 common_element_start($role);
 171                 foreach($twitter_user as $element => $value) {
 172                         if ($element == 'status') {
 173                                 $this->show_twitter_xml_status($twitter_user['status']);
 174                         } else {
 175                                 common_element($element, NULL, $value);
 176                         }
 177                 }
 178                 common_element_end($role);
 179         }
 180
 181         function show_twitter_rss_item($entry) {
 182                 common_element_start('item');
 183                 common_element('title', NULL, $entry['title']);
 184                 common_element('description', NULL, $entry['description']);
 185                 common_element('pubDate', NULL, $entry['pubDate']);
 186                 common_element('guid', NULL, $entry['guid']);
 187                 common_element('link', NULL, $entry['link']);
 188                 common_element_end('item');
 189         }
 190
 191         function show_twitter_atom_entry($entry) {
 192             common_element_start('entry');
 193                 common_element('title', NULL, $entry['title']);
 194                 common_element('content', array('type' => 'html'), $entry['title']);
 195                 common_element('id', NULL, $entry['id']);
 196                 common_element('published', NULL, $entry['published']);
 197                 common_element('updated', NULL, $entry['updated']);
 198                 common_element('link', array('href' => $entry['link'], 'rel' => 'alternate', 'type' => 'text/html'), NULL);
 199                 common_element_end('entry');
 200         }
 201
 202         function show_json_objects($objects) {
 203                 print(json_encode($objects));
 204         }
 205
 206         function show_single_xml_status($notice) {
 207                 $this->init_document('xml');
 208                 $twitter_status = $this->twitter_status_array($notice);
 209                 $this->show_twitter_xml_status($twitter_status);
 210                 $this->end_document('xml');
 211         }
 212
 213         function show_single_json_status($notice) {
 214                 $this->init_document('json');
 215                 $status = $this->twitter_status_array($notice);
 216                 $this->show_json_objects($status);
 217                 $this->end_document('json');
 218         }
 219
 220         function show_single_xml_dmsg($message) {
 221                 $this->init_document('xml');
 222                 $dmsg = $this->twitter_dmsg_array($message);
 223                 $this->show_twitter_xml_dmsg($dmsg);
 224                 $this->end_document('xml');
 225         }
 226
 227         function show_single_json_dmsg($message) {
 228                 $this->init_document('json');
 229                 $dmsg = $this->twitter_dmsg_array($message);
 230                 $this->show_json_objects($dmsg);
 231                 $this->end_document('json');
 232         }
 233
 234         function show_twitter_xml_dmsg($twitter_dm) {
 235                 common_element_start('direct_message');
 236                 foreach($twitter_dm as $element => $value) {
 237                         switch ($element) {
 238                         case 'sender':
 239                         case 'recipient':
 240                                 $this->show_twitter_xml_user($value, $element);
 241                                 break;
 242                         case 'text':
 243                                 common_element($element, NULL, common_xml_safe_str($value));
 244                                 break;
 245                         default:
 246                                 common_element($element, NULL, $value);
 247                         }
 248                 }
 249                 common_element_end('direct_message');
 250         }
 251
 252         function show_xml_timeline($notice) {
 253
 254                 $this->init_document('xml');
 255                 common_element_start('statuses', array('type' => 'array'));
 256
 257                 if (is_array($notice)) {
 258                         foreach ($notice as $n) {
 259                                 $twitter_status = $this->twitter_status_array($n);
 260                                 $this->show_twitter_xml_status($twitter_status);
 261                         }
 262                 } else {
 263                         while ($notice->fetch()) {
 264                                 $twitter_status = $this->twitter_status_array($notice);
 265                                 $this->show_twitter_xml_status($twitter_status);
 266                         }
 267                 }
 268
 269                 common_element_end('statuses');
 270                 $this->end_document('xml');
 271         }
 272
 273         function show_rss_timeline($notice, $title, $link, $subtitle, $suplink=NULL) {
 274
 275                 $this->init_document('rss');
 276
 277                 common_element_start('channel');
 278                 common_element('title', NULL, $title);
 279                 common_element('link', NULL, $link);
 280                 if (!is_null($suplink)) {
 281                         # For FriendFeed's SUP protocol
 282                         common_element('link', array('xmlns' => 'http://www.w3.org/2005/Atom',
 283                                                                                  'rel' => 'http://api.friendfeed.com/2008/03#sup',
 284                                                                                  'href' => $suplink,
 285                                                                                  'type' => 'application/json'));
 286                 }
 287                 common_element('description', NULL, $subtitle);
 288                 common_element('language', NULL, 'en-us');
 289                 common_element('ttl', NULL, '40');
 290
 291
 292                 if (is_array($notice)) {
 293                         foreach ($notice as $n) {
 294                                 $entry = $this->twitter_rss_entry_array($n);
 295                                 $this->show_twitter_rss_item($entry);
 296                         }
 297                 } else {
 298                         while ($notice->fetch()) {
 299                                 $entry = $this->twitter_rss_entry_array($notice);
 300                                 $this->show_twitter_rss_item($entry);
 301                         }
 302                 }
 303
 304                 common_element_end('channel');
 305                 $this->end_twitter_rss();
 306         }
 307
 308         function show_atom_timeline($notice, $title, $id, $link, $subtitle=NULL, $suplink=NULL) {
 309
 310                 $this->init_document('atom');
 311
 312                 common_element('title', NULL, $title);
 313                 common_element('id', NULL, $id);
 314                 common_element('link', array('href' => $link, 'rel' => 'alternate', 'type' => 'text/html'), NULL);
 315                 if (!is_null($suplink)) {
 316                         # For FriendFeed's SUP protocol
 317                         common_element('link', array('rel' => 'http://api.friendfeed.com/2008/03#sup',
 318                                                                                  'href' => $suplink,
 319                                                                                  'type' => 'application/json'));
 320                 }
 321                 common_element('subtitle', NULL, $subtitle);
 322
 323                 if (is_array($notice)) {
 324                         foreach ($notice as $n) {
 325                                 $entry = $this->twitter_rss_entry_array($n);
 326                                 $this->show_twitter_atom_entry($entry);
 327                         }
 328                 } else {
 329                         while ($notice->fetch()) {
 330                                 $entry = $this->twitter_rss_entry_array($notice);
 331                                 $this->show_twitter_atom_entry($entry);
 332                         }
 333                 }
 334
 335                 $this->end_document('atom');
 336
 337         }
 338
 339         function show_json_timeline($notice) {
 340
 341                 $this->init_document('json');
 342
 343                 $statuses = array();
 344
 345                 if (is_array($notice)) {
 346                         foreach ($notice as $n) {
 347                                 $twitter_status = $this->twitter_status_array($n);
 348                                 array_push($statuses, $twitter_status);
 349                         }
 350                 } else {
 351                         while ($notice->fetch()) {
 352                                 $twitter_status = $this->twitter_status_array($notice);
 353                                 array_push($statuses, $twitter_status);
 354                         }
 355                 }
 356
 357                 $this->show_json_objects($statuses);
 358
 359                 $this->end_document('json');
 360         }
 361
 362         // Anyone know what date format this is?
 363         // Twitter's dates look like this: "Mon Jul 14 23:52:38 +0000 2008" -- Zach
 364         function date_twitter($dt) {
 365                 $t = strtotime($dt);
 366                 return date("D M d G:i:s O Y", $t);
 367         }
 368
 369         function replier_by_reply($reply_id) {
 370                 $notice = Notice::staticGet($reply_id);
 371                 if ($notice) {
 372                         $profile = $notice->getProfile();
 373                         if ($profile) {
 374                                 return intval($profile->id);
 375                         } else {
 376                                 common_debug('Can\'t find a profile for notice: ' . $notice->id, __FILE__);
 377                         }
 378                 } else {
 379                         common_debug("Can't get notice: $reply_id", __FILE__);
 380                 }
 381                 return NULL;
 382         }
 383
 384         // XXX: Candidate for a general utility method somewhere?
 385         function count_subscriptions($profile) {
 386
 387                 $count = 0;
 388                 $sub = new Subscription();
 389                 $sub->subscribed = $profile->id;
 390
 391                 $count = $sub->find();
 392
 393                 if ($count > 0) {
 394                         return $count - 1;
 395                 } else {
 396                         return 0;
 397                 }
 398         }
 399
 400         function init_document($type='xml') {
 401                 switch ($type) {
 402                  case 'xml':
 403                         header('Content-Type: application/xml; charset=utf-8');
 404                         common_start_xml();
 405                         break;
 406                  case 'json':
 407                         header('Content-Type: application/json; charset=utf-8');
 408
 409                         // Check for JSONP callback
 410                         $callback = $this->arg('callback');
 411                         if ($callback) {
 412                                 print $callback . '(';
 413                         }
 414                         break;
 415                  case 'rss':
 416                         header("Content-Type: application/rss+xml; charset=utf-8");
 417                         $this->init_twitter_rss();
 418                         break;
 419                  case 'atom':
 420                         header('Content-Type: application/atom+xml; charset=utf-8');
 421                         $this->init_twitter_atom();
 422                         break;
 423                  default:
 424                         $this->client_error(_('Not a supported data format.'));
 425                         break;
 426                 }
 427
 428                 return;
 429         }
 430
 431         function end_document($type='xml') {
 432                 switch ($type) {
 433                  case 'xml':
 434                         common_end_xml();
 435                         break;
 436                  case 'json':
 437
 438                         // Check for JSONP callback
 439                         $callback = $this->arg('callback');
 440                         if ($callback) {
 441                                 print ')';
 442                         }
 443                         break;
 444                  case 'rss':
 445                         $this->end_twitter_rss();
 446                         break;
 447                  case 'atom':
 448                         $this->end_twitter_rss();
 449                         break;
 450                  default:
 451                         $this->client_error(_('Not a supported data format.'));
 452                         break;
 453                 }
 454                 return;
 455         }
 456
 457         function client_error($msg, $code = 400, $content_type = 'json') {
 458
 459                 static $status = array(400 => 'Bad Request',
 460                                                            401 => 'Unauthorized',
 461                                                            402 => 'Payment Required',
 462                                                            403 => 'Forbidden',
 463                                                            404 => 'Not Found',
 464                                                            405 => 'Method Not Allowed',
 465                                                            406 => 'Not Acceptable',
 466                                                            407 => 'Proxy Authentication Required',
 467                                                            408 => 'Request Timeout',
 468                                                            409 => 'Conflict',
 469                                                            410 => 'Gone',
 470                                                            411 => 'Length Required',
 471                                                            412 => 'Precondition Failed',
 472                                                            413 => 'Request Entity Too Large',
 473                                                            414 => 'Request-URI Too Long',
 474                                                            415 => 'Unsupported Media Type',
 475                                                            416 => 'Requested Range Not Satisfiable',
 476                                                            417 => 'Expectation Failed');
 477
 478                 $action = $this->trimmed('action');
 479
 480                 common_debug("User error '$code' on '$action': $msg", __FILE__);
 481
 482                 if (!array_key_exists($code, $status)) {
 483                         $code = 400;
 484                 }
 485
 486                 $status_string = $status[$code];
 487                 header('HTTP/1.1 '.$code.' '.$status_string);
 488
 489                 if ($content_type == 'xml') {
 490                         $this->init_document('xml');
 491                         common_element_start('hash');
 492                         common_element('error', NULL, $msg);
 493                         common_element('request', NULL, $_SERVER['REQUEST_URI']);
 494                         common_element_end('hash');
 495                         $this->end_document('xml');
 496                 } else {
 497                         $this->init_document('json');
 498                         $error_array = array('error' => $msg, 'request' => $_SERVER['REQUEST_URI']);
 499                         print(json_encode($error_array));
 500                         $this->end_document('json');
 501                 }
 502
 503         }
 504
 505         function init_twitter_rss() {
 506                 common_start_xml();
 507                 common_element_start('rss', array('version' => '2.0'));
 508         }
 509
 510         function end_twitter_rss() {
 511                 common_element_end('rss');
 512                 common_end_xml();
 513         }
 514
 515         function init_twitter_atom() {
 516                 common_start_xml();
 517                 common_element_start('feed', array('xmlns' => 'http://www.w3.org/2005/Atom', 'xml:lang' => 'en-US'));
 518         }
 519
 520         function end_twitter_atom() {
 521                 common_end_xml();
 522                 common_element_end('feed');
 523         }
 524
 525         function show_profile($profile, $content_type='xml', $notice=NULL) {
 526                 $profile_array = $this->twitter_user_array($profile, true);
 527                 switch ($content_type) {
 528                  case 'xml':
 529                         $this->show_twitter_xml_user($profile_array);
 530                         break;
 531                  case 'json':
 532                         $this->show_json_objects($profile_array);
 533                         break;
 534                  default:
 535                         $this->client_error(_('Not a supported data format.'));
 536                         return;
 537                 }
 538                 return;
 539         }
 540
 541         function get_user($id, $apidata=NULL) {
 542                 if (!$id) {
 543                         return $apidata['user'];
 544                 } else if (is_numeric($id)) {
 545                         return User::staticGet($id);
 546                 } else {
 547                         $nickname = common_canonical_nickname($id);
 548                         return User::staticGet('nickname', $nickname);
 549                 }
 550         }
 551
 552         function get_profile($id) {
 553                 if (is_numeric($id)) {
 554                         return Profile::staticGet($id);
 555                 } else {
 556                         $user = User::staticGet('nickname', $id);
 557                         if ($user) {
 558                                 return $user->getProfile();
 559                         } else {
 560                                 return NULL;
 561                         }
 562                 }
 563         }
 564
 565         function source_link($source) {
 566                 $source_name = _($source);
 567                 switch ($source) {
 568                  case 'web':
 569                  case 'xmpp':
 570                  case 'mail':
 571                  case 'omb':
 572                  case 'api':
 573                         break;
 574                  default:
 575                         $ns = Notice_source::staticGet($source);
 576                         if ($ns) {
 577                                 $source_name = '<a href="' . $ns->url . '">' . $ns->name . '</a>';
 578                         }
 579                         break;
 580                 }
 581                 return $source_name;
 582         }
 583
 584 }