src/Model/Post/UserNotification.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2023, the Friendica project
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 namespace Friendica\Model\Post;
  23
  24 use BadMethodCallException;
  25 use Exception;
  26 use Friendica\Core\Hook;
  27 use Friendica\Core\Logger;
  28 use Friendica\Database\Database;
  29 use Friendica\Database\DBA;
  30 use Friendica\DI;
  31 use Friendica\Model\Contact;
  32 use Friendica\Model\Item;
  33 use Friendica\Model\Post;
  34 use Friendica\Model\Subscription;
  35 use Friendica\Model\Tag;
  36 use Friendica\Model\User;
  37 use Friendica\Network\HTTPException;
  38 use Friendica\Protocol\Activity;
  39 use Friendica\Util\Strings;
  40
  41 class UserNotification
  42 {
  43         // Notification types
  44         const TYPE_NONE                   = 0;
  45         const TYPE_EXPLICIT_TAGGED        = 1;
  46         const TYPE_IMPLICIT_TAGGED        = 2;
  47         const TYPE_THREAD_COMMENT         = 4;
  48         const TYPE_DIRECT_COMMENT         = 8;
  49         const TYPE_COMMENT_PARTICIPATION  = 16;
  50         const TYPE_ACTIVITY_PARTICIPATION = 32;
  51         const TYPE_DIRECT_THREAD_COMMENT  = 64;
  52         const TYPE_SHARED                 = 128;
  53         const TYPE_FOLLOW                 = 256;
  54         const TYPE_QUOTED                 = 512;
  55
  56         /**
  57          * Insert a new user notification entry
  58          *
  59          * @param integer $uri_id
  60          * @param integer $uid
  61          * @param array   $data
  62          * @return bool   success
  63          * @throws Exception
  64          */
  65         public static function insert(int $uri_id, int $uid, array $data = []): bool
  66         {
  67                 if (empty($uri_id)) {
  68                         throw new BadMethodCallException('Empty URI_id');
  69                 }
  70
  71                 $fields = DI::dbaDefinition()->truncateFieldsForTable('post-user-notification', $data);
  72
  73                 $fields['uri-id'] = $uri_id;
  74                 $fields['uid']    = $uid;
  75
  76                 return DBA::insert('post-user-notification', $fields, Database::INSERT_IGNORE);
  77         }
  78
  79         /**
  80          * Update a user notification entry
  81          *
  82          * @param integer $uri_id
  83          * @param integer $uid
  84          * @param array   $data
  85          * @param bool    $insert_if_missing
  86          * @return bool
  87          * @throws Exception
  88          */
  89         public static function update(int $uri_id, int $uid, array $data = [], bool $insert_if_missing = false): bool
  90         {
  91                 if (empty($uri_id)) {
  92                         throw new BadMethodCallException('Empty URI_id');
  93                 }
  94
  95                 $fields = DI::dbaDefinition()->truncateFieldsForTable('post-user-notification', $data);
  96
  97                 // Remove the key fields
  98                 unset($fields['uri-id']);
  99                 unset($fields['uid']);
 100
 101                 if (empty($fields)) {
 102                         return true;
 103                 }
 104
 105                 return DBA::update('post-user-notification', $fields, ['uri-id' => $uri_id, 'uid' => $uid], $insert_if_missing ? true : []);
 106         }
 107
 108         /**
 109          * Delete a row from the post-user-notification table
 110          *
 111          * @param array $conditions  Field condition(s)
 112          * @param array $options     - cascade: If true we delete records in other tables that depend on the one we're deleting through
 113          *                           relations (default: true)
 114          *
 115          * @return boolean was the deletion successful?
 116          * @throws Exception
 117          */
 118         public static function delete(array $conditions, array $options = []): bool
 119         {
 120                 return DBA::delete('post-user-notification', $conditions, $options);
 121         }
 122
 123         /**
 124          * Checks an item for notifications and sets the "notification-type" field
 125          *
 126          * @ToDo:
 127          * - Check for mentions in posts with "uid=0" where the user hadn't interacted before
 128          *
 129          * @param int $uri_id URI ID
 130          * @param int $uid    user ID
 131          * @throws Exception
 132          */
 133         public static function setNotification(int $uri_id, int $uid)
 134         {
 135                 $fields = ['id', 'uri-id', 'parent-uri-id', 'uid', 'body', 'parent', 'gravity', 'vid', 'gravity',
 136                         'contact-id', 'author-id', 'owner-id', 'causer-id',
 137                         'private', 'thr-parent', 'thr-parent-id', 'parent-uri-id', 'parent-uri', 'verb'];
 138                 $item   = Post::selectFirst($fields, ['uri-id' => $uri_id, 'uid' => $uid, 'origin' => false]);
 139                 if (!DBA::isResult($item)) {
 140                         return;
 141                 }
 142
 143                 // "Activity::FOLLOW" is an automated activity, so we ignore it here
 144                 if ($item['verb'] == Activity::FOLLOW) {
 145                         return;
 146                 }
 147
 148                 if ($item['uid'] == 0) {
 149                         $uids = [];
 150                 } else {
 151                         // Always include the item user
 152                         $uids = [$item['uid']];
 153                 }
 154
 155                 // Add every user who participated so far in this thread
 156                 // This can only happen with participations on global items. (means: uid = 0)
 157                 $users = DBA::p("SELECT DISTINCT(`contact-uid`) AS `uid` FROM `post-user-view`
 158                         WHERE `contact-uid` != 0 AND `parent-uri-id` = ? AND `uid` = ?", $item['parent-uri-id'], $uid);
 159                 while ($user = DBA::fetch($users)) {
 160                         $uids[] = $user['uid'];
 161                 }
 162                 DBA::close($users);
 163
 164                 foreach (array_unique($uids) as $uid) {
 165                         self::setNotificationForUser($item, $uid);
 166                 }
 167         }
 168
 169         /**
 170          * Checks an item for notifications for the given user and sets the "notification-type" field
 171          *
 172          * @param array $item Item array
 173          * @param int   $uid  User ID
 174          * @throws HTTPException\InternalServerErrorException
 175          */
 176         private static function setNotificationForUser(array $item, int $uid)
 177         {
 178                 if (Contact\User::isBlocked($item['author-id'], $uid) || Contact\User::isIgnored($item['author-id'], $uid) || Contact\User::isCollapsed($item['author-id'], $uid)) {
 179                         return;
 180                 }
 181
 182                 if (Contact\User::isBlocked($item['owner-id'], $uid) || Contact\User::isIgnored($item['owner-id'], $uid) || Contact\User::isCollapsed($item['owner-id'], $uid)) {
 183                         return;
 184                 }
 185
 186                 if (!empty($item['causer-id']) && (Contact\User::isBlocked($item['causer-id'], $uid) || Contact\User::isIgnored($item['causer-id'], $uid) || Contact\User::isCollapsed($item['causer-id'], $uid))) {
 187                         return;
 188                 }
 189
 190                 if (Post\ThreadUser::getIgnored($item['parent-uri-id'], $uid)) {
 191                         return;
 192                 }
 193
 194                 $user = User::getById($uid, ['account-type', 'account_removed', 'account_expired']);
 195                 if (in_array($user['account-type'], [User::ACCOUNT_TYPE_COMMUNITY, User::ACCOUNT_TYPE_RELAY])) {
 196                         return;
 197                 }
 198
 199                 if ($user['account_removed'] || $user['account_expired']) {
 200                         return;
 201                 }
 202
 203                 $author = Contact::getById($item['author-id'], ['contact-type']);
 204                 if (empty($author)) {
 205                         return;
 206                 }
 207
 208                 $notification_type = self::TYPE_NONE;
 209
 210                 if (self::checkShared($item, $uid)) {
 211                         $notification_type = $notification_type | self::TYPE_SHARED;
 212                         self::insertNotificationByItem(self::TYPE_SHARED, $uid, $item);
 213                         $notified = true;
 214                 } elseif ($author['contact-type'] == Contact::TYPE_COMMUNITY) {
 215                         return;
 216                 } else {
 217                         $notified = false;
 218                 }
 219
 220                 $profiles = self::getProfileForUser($uid);
 221
 222                 // Fetch all contacts for the given profiles
 223                 $contacts    = [];
 224                 $iscommunity = false;
 225
 226                 $ret = DBA::select('contact', ['id', 'contact-type'], ['uid' => 0, 'nurl' => $profiles]);
 227                 while ($contact = DBA::fetch($ret)) {
 228                         $contacts[] = $contact['id'];
 229
 230                         if ($contact['contact-type'] == Contact::TYPE_COMMUNITY) {
 231                                 $iscommunity = true;
 232                         }
 233                 }
 234                 DBA::close($ret);
 235
 236                 // Don't create notifications for user's posts
 237                 if (in_array($item['author-id'], $contacts)) {
 238                         return;
 239                 }
 240
 241                 if (($item['verb'] != Activity::ANNOUNCE) && self::checkExplicitMention($item, $profiles)) {
 242                         $notification_type = $notification_type | self::TYPE_EXPLICIT_TAGGED;
 243                         if (!$notified) {
 244                                 self::insertNotificationByItem(self::TYPE_EXPLICIT_TAGGED, $uid, $item);
 245                                 $notified = true;
 246                         }
 247                 }
 248
 249                 if (($item['verb'] != Activity::ANNOUNCE) && self::checkImplicitMention($item, $profiles)) {
 250                         $notification_type = $notification_type | self::TYPE_IMPLICIT_TAGGED;
 251                         if (!$notified) {
 252                                 self::insertNotificationByItem(self::TYPE_IMPLICIT_TAGGED, $uid, $item);
 253                                 $notified = true;
 254                         }
 255                 }
 256
 257                 if (self::checkDirectComment($item, $contacts)) {
 258                         $notification_type = $notification_type | self::TYPE_DIRECT_COMMENT;
 259                         if (!$notified) {
 260                                 self::insertNotificationByItem(self::TYPE_DIRECT_COMMENT, $uid, $item);
 261                                 $notified = true;
 262                         }
 263                 }
 264
 265                 if (!$iscommunity && self::checkDirectCommentedThread($item, $contacts)) {
 266                         $notification_type = $notification_type | self::TYPE_DIRECT_THREAD_COMMENT;
 267                         if (!$notified) {
 268                                 self::insertNotificationByItem(self::TYPE_DIRECT_THREAD_COMMENT, $uid, $item);
 269                                 $notified = true;
 270                         }
 271                 }
 272
 273                 if (($item['verb'] != Activity::ANNOUNCE) && self::checkCommentedThread($item, $contacts)) {
 274                         $notification_type = $notification_type | self::TYPE_THREAD_COMMENT;
 275                         if (!$notified) {
 276                                 self::insertNotificationByItem(self::TYPE_THREAD_COMMENT, $uid, $item);
 277                                 $notified = true;
 278                         }
 279                 }
 280
 281                 if (($item['verb'] != Activity::ANNOUNCE) && self::checkCommentedParticipation($item, $contacts)) {
 282                         $notification_type = $notification_type | self::TYPE_COMMENT_PARTICIPATION;
 283                         if (!$notified) {
 284                                 self::insertNotificationByItem(self::TYPE_COMMENT_PARTICIPATION, $uid, $item);
 285                                 $notified = true;
 286                         }
 287                 }
 288
 289                 if (($item['verb'] != Activity::ANNOUNCE) && self::checkQuoted($item, $contacts)) {
 290                         $notification_type = $notification_type | self::TYPE_QUOTED;
 291                         if (!$notified) {
 292                                 self::insertNotificationByItem(self::TYPE_QUOTED, $uid, $item);
 293                                 $notified = true;
 294                         }
 295                 }
 296
 297                 if (($item['verb'] != Activity::ANNOUNCE) && self::checkFollowParticipation($item, $contacts)) {
 298                         $notification_type = $notification_type | self::TYPE_FOLLOW;
 299                         if (!$notified) {
 300                                 self::insertNotificationByItem(self::TYPE_FOLLOW, $uid, $item);
 301                                 $notified = true;
 302                         }
 303                 }
 304
 305                 if (($item['verb'] != Activity::ANNOUNCE) && self::checkActivityParticipation($item, $contacts)) {
 306                         $notification_type = $notification_type | self::TYPE_ACTIVITY_PARTICIPATION;
 307                         if (!$notified) {
 308                                 self::insertNotificationByItem(self::TYPE_ACTIVITY_PARTICIPATION, $uid, $item);
 309                         }
 310                 }
 311
 312                 if (empty($notification_type)) {
 313                         return;
 314                 }
 315
 316                 // Only create notifications for posts and comments, not for activities
 317                 if (($item['gravity'] == Item::GRAVITY_ACTIVITY) && ($item['verb'] != Activity::ANNOUNCE)) {
 318                         return;
 319                 }
 320
 321                 Logger::info('Set notification', ['uri-id' => $item['uri-id'], 'uid' => $uid, 'notification-type' => $notification_type]);
 322
 323                 $fields = ['notification-type' => $notification_type];
 324                 Post\User::update($item['uri-id'], $uid, $fields);
 325                 self::update($item['uri-id'], $uid, $fields, true);
 326         }
 327
 328         /**
 329          * Add a notification entry for a given item array
 330          *
 331          * @param int   $type User notification type
 332          * @param int   $uid  User ID
 333          * @param array $item Item array
 334          * @return void
 335          * @throws Exception
 336          */
 337         private static function insertNotificationByItem(int $type, int $uid, array $item): void
 338         {
 339                 if (($item['verb'] != Activity::ANNOUNCE) && ($item['gravity'] == Item::GRAVITY_ACTIVITY) &&
 340                         !in_array($type, [self::TYPE_DIRECT_COMMENT, self::TYPE_DIRECT_THREAD_COMMENT])) {
 341                         // Activities are only stored when performed on the user's post or comment
 342                         return;
 343                 }
 344
 345                 $notification = DI::notificationFactory()->createForUser(
 346                         $uid,
 347                         $item['vid'],
 348                         $type,
 349                         $item['author-id'],
 350                         $item['gravity'] == Item::GRAVITY_ACTIVITY ? $item['thr-parent-id'] : $item['uri-id'],
 351                         $item['parent-uri-id']
 352                 );
 353
 354                 try {
 355                         $notification = DI::notification()->save($notification);
 356                         Subscription::pushByNotification($notification);
 357                 } catch (Exception $e) {
 358
 359                 }
 360         }
 361
 362         /**
 363          * Add a notification entry
 364          *
 365          * @param int    $actor Public contact ID of the actor
 366          * @param string $verb  One of the Activity verb constant values
 367          * @param int    $uid   User ID
 368          * @return boolean
 369          * @throws Exception
 370          */
 371         public static function insertNotification(int $actor, string $verb, int $uid): bool
 372         {
 373                 $notification = DI::notificationFactory()->createForRelationship(
 374                         $uid,
 375                         $actor,
 376                         $verb
 377                 );
 378                 try {
 379                         $notification = DI::notification()->save($notification);
 380                         Subscription::pushByNotification($notification);
 381                         return true;
 382                 } catch (Exception $e) {
 383                         return false;
 384                 }
 385         }
 386
 387         /**
 388          * Fetch all profiles (contact URL) of a given user
 389          *
 390          * @param int $uid User ID
 391          *
 392          * @return array Profile links
 393          * @throws HTTPException\InternalServerErrorException
 394          */
 395         private static function getProfileForUser(int $uid): array
 396         {
 397                 $notification_data = ['uid' => $uid, 'profiles' => []];
 398                 Hook::callAll('check_item_notification', $notification_data);
 399
 400                 $profiles = $notification_data['profiles'];
 401
 402                 $user = DBA::selectFirst('user', ['nickname'], ['uid' => $uid]);
 403                 if (!DBA::isResult($user)) {
 404                         return [];
 405                 }
 406
 407                 $owner = DBA::selectFirst('contact', ['url', 'alias'], ['self' => true, 'uid' => $uid]);
 408                 if (!DBA::isResult($owner)) {
 409                         return [];
 410                 }
 411
 412                 // This is our regular URL format
 413                 $profiles[] = $owner['url'];
 414
 415                 // Now the alias
 416                 $profiles[] = $owner['alias'];
 417
 418                 // Notifications from Diaspora often have a URL in the Diaspora format
 419                 $profiles[] = DI::baseUrl() . '/u/' . $user['nickname'];
 420
 421                 // Validate and add profile links
 422                 foreach ($profiles as $key => $profile) {
 423                         // Check for invalid profile urls (without scheme, host or path) and remove them
 424                         if (empty(parse_url($profile, PHP_URL_SCHEME)) || empty(parse_url($profile, PHP_URL_HOST)) || empty(parse_url($profile, PHP_URL_PATH))) {
 425                                 unset($profiles[$key]);
 426                                 continue;
 427                         }
 428
 429                         // Add the normalized form
 430                         $profile    = Strings::normaliseLink($profile);
 431                         $profiles[] = $profile;
 432
 433                         // Add the SSL form
 434                         $profile    = str_replace('http://', 'https://', $profile);
 435                         $profiles[] = $profile;
 436                 }
 437
 438                 return array_unique($profiles);
 439         }
 440
 441         /**
 442          * Check for a "shared" notification for every new post of contacts from the given user
 443          *
 444          * @param array $item
 445          * @param int   $uid User ID
 446          * @return bool A contact had shared something
 447          * @throws Exception
 448          */
 449         private static function checkShared(array $item, int $uid): bool
 450         {
 451                 // Only check on original posts and reshare ("announce") activities, otherwise return
 452                 if (($item['gravity'] != Item::GRAVITY_PARENT) && ($item['verb'] != Activity::ANNOUNCE)) {
 453                         return false;
 454                 }
 455
 456                 // Don't notify about reshares by communities of our own posts or each time someone comments
 457                 if (($item['verb'] == Activity::ANNOUNCE) && DBA::exists('contact', ['id' => $item['contact-id'], 'contact-type' => Contact::TYPE_COMMUNITY])) {
 458                         $post = Post::selectFirst(['origin', 'gravity'], ['uri-id' => $item['thr-parent-id'], 'uid' => $uid]);
 459                         if (!$post || $post['origin'] || ($post['gravity'] != Item::GRAVITY_PARENT)) {
 460                                 return false;
 461                         }
 462                 }
 463
 464                 // Only check on posts by the user itself
 465                 $cdata = Contact::getPublicAndUserContactID($item['contact-id'], $item['uid']);
 466                 if (empty($cdata['user']) || ($item['author-id'] != $cdata['public'])) {
 467                         return false;
 468                 }
 469
 470                 // Check if the contact posted or shared something directly
 471                 if (DBA::exists('contact', ['id' => $item['contact-id'], 'notify_new_posts' => true])) {
 472                         return true;
 473                 }
 474
 475                 return false;
 476         }
 477
 478         /**
 479          * Check for an implicit mention (only in tags, not in body) of the given user
 480          *
 481          * @param array $item
 482          * @param array $profiles Profile links
 483          * @return bool The user is mentioned
 484          * @throws Exception
 485          */
 486         private static function checkImplicitMention(array $item, array $profiles): bool
 487         {
 488                 $mentions = Tag::getByURIId($item['uri-id'], [Tag::IMPLICIT_MENTION]);
 489                 foreach ($mentions as $mention) {
 490                         foreach ($profiles as $profile) {
 491                                 if (Strings::compareLink($profile, $mention['url'])) {
 492                                         return true;
 493                                 }
 494                         }
 495                 }
 496
 497                 return false;
 498         }
 499
 500         /**
 501          * Check for an explicit mention (tag and body) of the given user
 502          *
 503          * @param array $item
 504          * @param array $profiles Profile links
 505          * @return bool The user is mentioned
 506          * @throws Exception
 507          */
 508         private static function checkExplicitMention(array $item, array $profiles): bool
 509         {
 510                 $mentions = Tag::getByURIId($item['uri-id'], [Tag::MENTION, Tag::EXCLUSIVE_MENTION]);
 511                 foreach ($mentions as $mention) {
 512                         foreach ($profiles as $profile) {
 513                                 if (Strings::compareLink($profile, $mention['url'])) {
 514                                         return true;
 515                                 }
 516                         }
 517                 }
 518
 519                 return false;
 520         }
 521
 522         /**
 523          * Check if the given user had created this thread
 524          *
 525          * @param array $item
 526          * @param array $contacts Array of contact IDs
 527          * @return bool The user had created this thread
 528          * @throws Exception
 529          */
 530         private static function checkCommentedThread(array $item, array $contacts): bool
 531         {
 532                 $condition = ['parent' => $item['parent'], 'author-id' => $contacts, 'deleted' => false, 'gravity' => Item::GRAVITY_PARENT];
 533                 return Post::exists($condition);
 534         }
 535
 536         /**
 537          * Check for a direct comment to a post of the given user
 538          *
 539          * @param array $item
 540          * @param array $contacts Array of contact IDs
 541          * @return bool The item is a direct comment to a user comment
 542          * @throws Exception
 543          */
 544         private static function checkDirectComment(array $item, array $contacts): bool
 545         {
 546                 $condition = ['uri' => $item['thr-parent'], 'uid' => $item['uid'], 'author-id' => $contacts, 'deleted' => false, 'gravity' => Item::GRAVITY_COMMENT];
 547                 return Post::exists($condition);
 548         }
 549
 550         /**
 551          * Check for a direct comment to the starting post of the given user
 552          *
 553          * @param array $item
 554          * @param array $contacts Array of contact IDs
 555          * @return bool The user had created this thread
 556          * @throws Exception
 557          */
 558         private static function checkDirectCommentedThread(array $item, array $contacts): bool
 559         {
 560                 $condition = ['uri' => $item['thr-parent'], 'uid' => $item['uid'], 'author-id' => $contacts, 'deleted' => false, 'gravity' => Item::GRAVITY_PARENT];
 561                 return Post::exists($condition);
 562         }
 563
 564         /**
 565          *  Check if the user had commented in this thread
 566          *
 567          * @param array $item
 568          * @param array $contacts Array of contact IDs
 569          * @return bool The user had commented in the thread
 570          * @throws Exception
 571          */
 572         private static function checkCommentedParticipation(array $item, array $contacts): bool
 573         {
 574                 $condition = ['parent' => $item['parent'], 'author-id' => $contacts, 'deleted' => false, 'gravity' => Item::GRAVITY_COMMENT];
 575                 return Post::exists($condition);
 576         }
 577
 578         /**
 579          * Check if the user follows this thread
 580          *
 581          * @param array $item
 582          * @param array $contacts Array of contact IDs
 583          * @return bool The user follows the thread
 584          * @throws Exception
 585          */
 586         private static function checkFollowParticipation(array $item, array $contacts): bool
 587         {
 588                 $condition = ['parent' => $item['parent'], 'author-id' => $contacts, 'deleted' => false, 'gravity' => Item::GRAVITY_ACTIVITY, 'verb' => Activity::FOLLOW];
 589                 return Post::exists($condition);
 590         }
 591
 592         /**
 593          * Check if the user had interacted in this thread (Like, Dislike, ...)
 594          *
 595          * @param array $item
 596          * @param array $contacts Array of contact IDs
 597          * @return bool The user had interacted in the thread
 598          * @throws Exception
 599          */
 600         private static function checkActivityParticipation(array $item, array $contacts): bool
 601         {
 602                 $condition = ['parent' => $item['parent'], 'author-id' => $contacts, 'deleted' => false, 'gravity' => Item::GRAVITY_ACTIVITY];
 603                 return Post::exists($condition);
 604         }
 605
 606         /**
 607          * Check for a quoted post of a post of the given user
 608          *
 609          * @param array $item
 610          * @param array $contacts Array of contact IDs
 611          * @return bool The item is a quoted post of a user's post or comment
 612          * @throws Exception
 613          */
 614         private static function checkQuoted(array $item, array $contacts): bool
 615         {
 616                 if (empty($item['quote-uri-id'])) {
 617                         return false;
 618                 }
 619                 $condition = ['uri-id' => $item['quote-uri-id'], 'uid' => $item['uid'], 'author-id' => $contacts, 'deleted' => false, 'gravity' => [item::GRAVITY_PARENT, Item::GRAVITY_COMMENT]];
 620                 return Post::exists($condition);
 621         }
 622
 623
 624 }