src/Model/Contact.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2021, 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;
  23
  24 use Friendica\App\BaseURL;
  25 use Friendica\Content\Pager;
  26 use Friendica\Content\Text\HTML;
  27 use Friendica\Core\Hook;
  28 use Friendica\Core\Logger;
  29 use Friendica\Core\Protocol;
  30 use Friendica\Core\Renderer;
  31 use Friendica\Core\Session;
  32 use Friendica\Core\System;
  33 use Friendica\Core\Worker;
  34 use Friendica\Database\Database;
  35 use Friendica\Database\DBA;
  36 use Friendica\DI;
  37 use Friendica\Network\HTTPException;
  38 use Friendica\Network\Probe;
  39 use Friendica\Protocol\Activity;
  40 use Friendica\Protocol\ActivityPub;
  41 use Friendica\Protocol\DFRN;
  42 use Friendica\Protocol\Diaspora;
  43 use Friendica\Protocol\OStatus;
  44 use Friendica\Protocol\Salmon;
  45 use Friendica\Util\DateTimeFormat;
  46 use Friendica\Util\Images;
  47 use Friendica\Util\Network;
  48 use Friendica\Util\Proxy;
  49 use Friendica\Util\Strings;
  50
  51 /**
  52  * functions for interacting with a contact
  53  */
  54 class Contact
  55 {
  56         const DEFAULT_AVATAR_PHOTO = '/images/person-300.jpg';
  57         const DEFAULT_AVATAR_THUMB = '/images/person-80.jpg';
  58         const DEFAULT_AVATAR_MICRO = '/images/person-48.jpg';
  59
  60         /**
  61          * @deprecated since version 2019.03
  62          * @see User::PAGE_FLAGS_NORMAL
  63          */
  64         const PAGE_NORMAL    = User::PAGE_FLAGS_NORMAL;
  65         /**
  66          * @deprecated since version 2019.03
  67          * @see User::PAGE_FLAGS_SOAPBOX
  68          */
  69         const PAGE_SOAPBOX   = User::PAGE_FLAGS_SOAPBOX;
  70         /**
  71          * @deprecated since version 2019.03
  72          * @see User::PAGE_FLAGS_COMMUNITY
  73          */
  74         const PAGE_COMMUNITY = User::PAGE_FLAGS_COMMUNITY;
  75         /**
  76          * @deprecated since version 2019.03
  77          * @see User::PAGE_FLAGS_FREELOVE
  78          */
  79         const PAGE_FREELOVE  = User::PAGE_FLAGS_FREELOVE;
  80         /**
  81          * @deprecated since version 2019.03
  82          * @see User::PAGE_FLAGS_BLOG
  83          */
  84         const PAGE_BLOG      = User::PAGE_FLAGS_BLOG;
  85         /**
  86          * @deprecated since version 2019.03
  87          * @see User::PAGE_FLAGS_PRVGROUP
  88          */
  89         const PAGE_PRVGROUP  = User::PAGE_FLAGS_PRVGROUP;
  90         /**
  91          * @}
  92          */
  93
  94         const LOCK_INSERT = 'contact-insert';
  95
  96         /**
  97          * Account types
  98          *
  99          * TYPE_UNKNOWN - unknown type
 100          *
 101          * TYPE_PERSON - the account belongs to a person
 102          *      Associated page types: PAGE_NORMAL, PAGE_SOAPBOX, PAGE_FREELOVE
 103          *
 104          * TYPE_ORGANISATION - the account belongs to an organisation
 105          *      Associated page type: PAGE_SOAPBOX
 106          *
 107          * TYPE_NEWS - the account is a news reflector
 108          *      Associated page type: PAGE_SOAPBOX
 109          *
 110          * TYPE_COMMUNITY - the account is community forum
 111          *      Associated page types: PAGE_COMMUNITY, PAGE_PRVGROUP
 112          *
 113          * TYPE_RELAY - the account is a relay
 114          *      This will only be assigned to contacts, not to user accounts
 115          * @{
 116          */
 117         const TYPE_UNKNOWN =     -1;
 118         const TYPE_PERSON =       User::ACCOUNT_TYPE_PERSON;
 119         const TYPE_ORGANISATION = User::ACCOUNT_TYPE_ORGANISATION;
 120         const TYPE_NEWS =         User::ACCOUNT_TYPE_NEWS;
 121         const TYPE_COMMUNITY =    User::ACCOUNT_TYPE_COMMUNITY;
 122         const TYPE_RELAY =        User::ACCOUNT_TYPE_RELAY;
 123         /**
 124          * @}
 125          */
 126
 127         /**
 128          * Contact_is
 129          *
 130          * Relationship types
 131          * @{
 132          */
 133         const NOTHING  = 0;
 134         const FOLLOWER = 1;
 135         const SHARING  = 2;
 136         const FRIEND   = 3;
 137         /**
 138          * @}
 139          */
 140
 141          const MIRROR_DEACTIVATED = 0;
 142          const MIRROR_FORWARDED = 1;
 143          const MIRROR_OWN_POST = 2;
 144          const MIRROR_NATIVE_RESHARE = 3;
 145
 146          /**
 147          * @param array $fields    Array of selected fields, empty for all
 148          * @param array $condition Array of fields for condition
 149          * @param array $params    Array of several parameters
 150          * @return array
 151          * @throws \Exception
 152          */
 153         public static function selectToArray(array $fields = [], array $condition = [], array $params = [])
 154         {
 155                 return DBA::selectToArray('contact', $fields, $condition, $params);
 156         }
 157
 158         /**
 159          * @param array $fields    Array of selected fields, empty for all
 160          * @param array $condition Array of fields for condition
 161          * @param array $params    Array of several parameters
 162          * @return array
 163          * @throws \Exception
 164          */
 165         public static function selectFirst(array $fields = [], array $condition = [], array $params = [])
 166         {
 167                 $contact = DBA::selectFirst('contact', $fields, $condition, $params);
 168
 169                 return $contact;
 170         }
 171
 172         /**
 173          * Insert a row into the contact table
 174          * Important: You can't use DBA::lastInsertId() after this call since it will be set to 0.
 175          *
 176          * @param array $fields         field array
 177          * @param int   $duplicate_mode Do an update on a duplicate entry
 178          *
 179          * @return boolean was the insert successful?
 180          * @throws \Exception
 181          */
 182         public static function insert(array $fields, int $duplicate_mode = Database::INSERT_DEFAULT)
 183         {
 184                 if (!empty($fields['baseurl']) && empty($fields['gsid'])) {
 185                         $fields['gsid'] = GServer::getID($fields['baseurl'], true);
 186                 }
 187
 188                 if (empty($fields['created'])) {
 189                         $fields['created'] = DateTimeFormat::utcNow();
 190                 }
 191
 192                 $ret = DBA::insert('contact', $fields, $duplicate_mode);
 193                 $contact = DBA::selectFirst('contact', ['nurl', 'uid'], ['id' => DBA::lastInsertId()]);
 194                 if (!DBA::isResult($contact)) {
 195                         // Shouldn't happen
 196                         return $ret;
 197                 }
 198
 199                 // Search for duplicated contacts and get rid of them
 200                 self::removeDuplicates($contact['nurl'], $contact['uid']);
 201
 202                 return $ret;
 203         }
 204
 205         /**
 206          * @param integer $id     Contact ID
 207          * @param array   $fields Array of selected fields, empty for all
 208          * @return array|boolean Contact record if it exists, false otherwise
 209          * @throws \Exception
 210          */
 211         public static function getById($id, $fields = [])
 212         {
 213                 return DBA::selectFirst('contact', $fields, ['id' => $id]);
 214         }
 215
 216         /**
 217          * Fetches a contact by a given url
 218          *
 219          * @param string  $url    profile url
 220          * @param boolean $update true = always update, false = never update, null = update when not found or outdated
 221          * @param array   $fields Field list
 222          * @param integer $uid    User ID of the contact
 223          * @return array contact array
 224          */
 225         public static function getByURL(string $url, $update = null, array $fields = [], int $uid = 0)
 226         {
 227                 if ($update || is_null($update)) {
 228                         $cid = self::getIdForURL($url, $uid, $update);
 229                         if (empty($cid)) {
 230                                 return [];
 231                         }
 232
 233                         $contact = self::getById($cid, $fields);
 234                         if (empty($contact)) {
 235                                 return [];
 236                         }
 237                         return $contact;
 238                 }
 239
 240                 // Add internal fields
 241                 $removal = [];
 242                 if (!empty($fields)) {
 243                         foreach (['id', 'avatar', 'created', 'updated', 'last-update', 'success_update', 'failure_update', 'network'] as $internal) {
 244                                 if (!in_array($internal, $fields)) {
 245                                         $fields[] = $internal;
 246                                         $removal[] = $internal;
 247                                 }
 248                         }
 249                 }
 250
 251                 // We first try the nurl (http://server.tld/nick), most common case
 252                 $options = ['order' => ['id']];
 253                 $contact = DBA::selectFirst('contact', $fields, ['nurl' => Strings::normaliseLink($url), 'uid' => $uid, 'deleted' => false], $options);
 254
 255                 // Then the addr (nick@server.tld)
 256                 if (!DBA::isResult($contact)) {
 257                         $contact = DBA::selectFirst('contact', $fields, ['addr' => str_replace('acct:', '', $url), 'uid' => $uid, 'deleted' => false], $options);
 258                 }
 259
 260                 // Then the alias (which could be anything)
 261                 if (!DBA::isResult($contact)) {
 262                         // The link could be provided as http although we stored it as https
 263                         $ssl_url = str_replace('http://', 'https://', $url);
 264                         $condition = ['`alias` IN (?, ?, ?) AND `uid` = ? AND NOT `deleted`', $url, Strings::normaliseLink($url), $ssl_url, $uid];
 265                         $contact = DBA::selectFirst('contact', $fields, $condition, $options);
 266                 }
 267
 268                 if (!DBA::isResult($contact)) {
 269                         return [];
 270                 }
 271
 272                 // Update the contact in the background if needed
 273                 $updated = max($contact['success_update'], $contact['created'], $contact['updated'], $contact['last-update'], $contact['failure_update']);
 274                 if (($updated < DateTimeFormat::utc('now -7 days')) && in_array($contact['network'], Protocol::FEDERATED) && !self::isLocalById($contact['id'])) {
 275                         Worker::add(PRIORITY_LOW, "UpdateContact", $contact['id']);
 276                 }
 277
 278                 // Remove the internal fields
 279                 foreach ($removal as $internal) {
 280                         unset($contact[$internal]);
 281                 }
 282
 283                 return $contact;
 284         }
 285
 286         /**
 287          * Fetches a contact for a given user by a given url.
 288          * In difference to "getByURL" the function will fetch a public contact when no user contact had been found.
 289          *
 290          * @param string  $url    profile url
 291          * @param integer $uid    User ID of the contact
 292          * @param boolean $update true = always update, false = never update, null = update when not found or outdated
 293          * @param array   $fields Field list
 294          * @return array contact array
 295          */
 296         public static function getByURLForUser(string $url, int $uid = 0, $update = false, array $fields = [])
 297         {
 298                 if ($uid != 0) {
 299                         $contact = self::getByURL($url, $update, $fields, $uid);
 300                         if (!empty($contact)) {
 301                                 if (!empty($contact['id'])) {
 302                                         $contact['cid'] = $contact['id'];
 303                                         $contact['zid'] = 0;
 304                                 }
 305                                 return $contact;
 306                         }
 307                 }
 308
 309                 $contact = self::getByURL($url, $update, $fields);
 310                 if (!empty($contact['id'])) {
 311                         $contact['cid'] = 0;
 312                         $contact['zid'] = $contact['id'];
 313                 }
 314                 return $contact;
 315         }
 316
 317         /**
 318          * Tests if the given contact is a follower
 319          *
 320          * @param int $cid Either public contact id or user's contact id
 321          * @param int $uid User ID
 322          *
 323          * @return boolean is the contact id a follower?
 324          * @throws HTTPException\InternalServerErrorException
 325          * @throws \ImagickException
 326          */
 327         public static function isFollower($cid, $uid)
 328         {
 329                 if (Contact\User::isBlocked($cid, $uid)) {
 330                         return false;
 331                 }
 332
 333                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 334                 if (empty($cdata['user'])) {
 335                         return false;
 336                 }
 337
 338                 $condition = ['id' => $cdata['user'], 'rel' => [self::FOLLOWER, self::FRIEND]];
 339                 return DBA::exists('contact', $condition);
 340         }
 341
 342         /**
 343          * Tests if the given contact url is a follower
 344          *
 345          * @param string $url Contact URL
 346          * @param int    $uid User ID
 347          *
 348          * @return boolean is the contact id a follower?
 349          * @throws HTTPException\InternalServerErrorException
 350          * @throws \ImagickException
 351          */
 352         public static function isFollowerByURL($url, $uid)
 353         {
 354                 $cid = self::getIdForURL($url, $uid);
 355
 356                 if (empty($cid)) {
 357                         return false;
 358                 }
 359
 360                 return self::isFollower($cid, $uid);
 361         }
 362
 363         /**
 364          * Tests if the given user follow the given contact
 365          *
 366          * @param int $cid Either public contact id or user's contact id
 367          * @param int $uid User ID
 368          *
 369          * @return boolean is the contact url being followed?
 370          * @throws HTTPException\InternalServerErrorException
 371          * @throws \ImagickException
 372          */
 373         public static function isSharing($cid, $uid)
 374         {
 375                 if (Contact\User::isBlocked($cid, $uid)) {
 376                         return false;
 377                 }
 378
 379                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 380                 if (empty($cdata['user'])) {
 381                         return false;
 382                 }
 383
 384                 $condition = ['id' => $cdata['user'], 'rel' => [self::SHARING, self::FRIEND]];
 385                 return DBA::exists('contact', $condition);
 386         }
 387
 388         /**
 389          * Tests if the given user follow the given contact url
 390          *
 391          * @param string $url Contact URL
 392          * @param int    $uid User ID
 393          *
 394          * @return boolean is the contact url being followed?
 395          * @throws HTTPException\InternalServerErrorException
 396          * @throws \ImagickException
 397          */
 398         public static function isSharingByURL($url, $uid)
 399         {
 400                 $cid = self::getIdForURL($url, $uid);
 401
 402                 if (empty($cid)) {
 403                         return false;
 404                 }
 405
 406                 return self::isSharing($cid, $uid);
 407         }
 408
 409         /**
 410          * Get the basepath for a given contact link
 411          *
 412          * @param string $url The contact link
 413          * @param boolean $dont_update Don't update the contact
 414          *
 415          * @return string basepath
 416          * @throws HTTPException\InternalServerErrorException
 417          * @throws \ImagickException
 418          */
 419         public static function getBasepath($url, $dont_update = false)
 420         {
 421                 $contact = DBA::selectFirst('contact', ['id', 'baseurl'], ['uid' => 0, 'nurl' => Strings::normaliseLink($url)]);
 422                 if (!DBA::isResult($contact)) {
 423                         return '';
 424                 }
 425
 426                 if (!empty($contact['baseurl'])) {
 427                         return $contact['baseurl'];
 428                 } elseif ($dont_update) {
 429                         return '';
 430                 }
 431
 432                 // Update the existing contact
 433                 self::updateFromProbe($contact['id']);
 434
 435                 // And fetch the result
 436                 $contact = DBA::selectFirst('contact', ['baseurl'], ['id' => $contact['id']]);
 437                 if (empty($contact['baseurl'])) {
 438                         Logger::info('No baseurl for contact', ['url' => $url]);
 439                         return '';
 440                 }
 441
 442                 Logger::info('Found baseurl for contact', ['url' => $url, 'baseurl' => $contact['baseurl']]);
 443                 return $contact['baseurl'];
 444         }
 445
 446         /**
 447          * Check if the given contact url is on the same server
 448          *
 449          * @param string $url The contact link
 450          *
 451          * @return boolean Is it the same server?
 452          */
 453         public static function isLocal($url)
 454         {
 455                 return Strings::compareLink(self::getBasepath($url, true), DI::baseUrl());
 456         }
 457
 458         /**
 459          * Check if the given contact ID is on the same server
 460          *
 461          * @param string $url The contact link
 462          *
 463          * @return boolean Is it the same server?
 464          */
 465         public static function isLocalById(int $cid)
 466         {
 467                 $contact = DBA::selectFirst('contact', ['url', 'baseurl'], ['id' => $cid]);
 468                 if (!DBA::isResult($contact)) {
 469                         return false;
 470                 }
 471
 472                 if (empty($contact['baseurl'])) {
 473                         $baseurl = self::getBasepath($contact['url'], true);
 474                 } else {
 475                         $baseurl = $contact['baseurl'];
 476                 }
 477
 478                 return Strings::compareLink($baseurl, DI::baseUrl());
 479         }
 480
 481         /**
 482          * Returns the public contact id of the given user id
 483          *
 484          * @param  integer $uid User ID
 485          *
 486          * @return integer|boolean Public contact id for given user id
 487          * @throws \Exception
 488          */
 489         public static function getPublicIdByUserId($uid)
 490         {
 491                 $self = DBA::selectFirst('contact', ['url'], ['self' => true, 'uid' => $uid]);
 492                 if (!DBA::isResult($self)) {
 493                         return false;
 494                 }
 495                 return self::getIdForURL($self['url']);
 496         }
 497
 498         /**
 499          * Returns the contact id for the user and the public contact id for a given contact id
 500          *
 501          * @param int $cid Either public contact id or user's contact id
 502          * @param int $uid User ID
 503          *
 504          * @return array with public and user's contact id
 505          * @throws HTTPException\InternalServerErrorException
 506          * @throws \ImagickException
 507          */
 508         public static function getPublicAndUserContacID($cid, $uid)
 509         {
 510                 if (empty($uid) || empty($cid)) {
 511                         return [];
 512                 }
 513
 514                 $contact = DBA::selectFirst('contact', ['id', 'uid', 'url'], ['id' => $cid]);
 515                 if (!DBA::isResult($contact)) {
 516                         return [];
 517                 }
 518
 519                 // We quit when the user id don't match the user id of the provided contact
 520                 if (($contact['uid'] != $uid) && ($contact['uid'] != 0)) {
 521                         return [];
 522                 }
 523
 524                 if ($contact['uid'] != 0) {
 525                         $pcid = self::getIdForURL($contact['url'], 0, false, ['url' => $contact['url']]);
 526                         if (empty($pcid)) {
 527                                 return [];
 528                         }
 529                         $ucid = $contact['id'];
 530                 } else {
 531                         $pcid = $contact['id'];
 532                         $ucid = self::getIdForURL($contact['url'], $uid);
 533                 }
 534
 535                 return ['public' => $pcid, 'user' => $ucid];
 536         }
 537
 538         /**
 539          * Returns contact details for a given contact id in combination with a user id
 540          *
 541          * @param int $cid A contact ID
 542          * @param int $uid The User ID
 543          * @param array $fields The selected fields for the contact
 544          *
 545          * @return array The contact details
 546          *
 547          * @throws \Exception
 548          */
 549         public static function getContactForUser($cid, $uid, array $fields = [])
 550         {
 551                 $contact = DBA::selectFirst('contact', $fields, ['id' => $cid, 'uid' => $uid]);
 552
 553                 if (!DBA::isResult($contact)) {
 554                         return [];
 555                 } else {
 556                         return $contact;
 557                 }
 558         }
 559
 560         /**
 561          * Creates the self-contact for the provided user id
 562          *
 563          * @param int $uid
 564          * @return bool Operation success
 565          * @throws HTTPException\InternalServerErrorException
 566          */
 567         public static function createSelfFromUserId($uid)
 568         {
 569                 $user = DBA::selectFirst('user', ['uid', 'username', 'nickname', 'pubkey', 'prvkey'],
 570                         ['uid' => $uid, 'account_expired' => false]);
 571                 if (!DBA::isResult($user)) {
 572                         return false;
 573                 }
 574
 575                 $contact = [
 576                         'uid'         => $user['uid'],
 577                         'created'     => DateTimeFormat::utcNow(),
 578                         'self'        => 1,
 579                         'name'        => $user['username'],
 580                         'nick'        => $user['nickname'],
 581                         'pubkey'      => $user['pubkey'],
 582                         'prvkey'      => $user['prvkey'],
 583                         'photo'       => DI::baseUrl() . '/photo/profile/' . $user['uid'] . '.jpg',
 584                         'thumb'       => DI::baseUrl() . '/photo/avatar/'  . $user['uid'] . '.jpg',
 585                         'micro'       => DI::baseUrl() . '/photo/micro/'   . $user['uid'] . '.jpg',
 586                         'blocked'     => 0,
 587                         'pending'     => 0,
 588                         'url'         => DI::baseUrl() . '/profile/' . $user['nickname'],
 589                         'nurl'        => Strings::normaliseLink(DI::baseUrl() . '/profile/' . $user['nickname']),
 590                         'addr'        => $user['nickname'] . '@' . substr(DI::baseUrl(), strpos(DI::baseUrl(), '://') + 3),
 591                         'request'     => DI::baseUrl() . '/dfrn_request/' . $user['nickname'],
 592                         'notify'      => DI::baseUrl() . '/dfrn_notify/'  . $user['nickname'],
 593                         'poll'        => DI::baseUrl() . '/dfrn_poll/'    . $user['nickname'],
 594                         'confirm'     => DI::baseUrl() . '/dfrn_confirm/' . $user['nickname'],
 595                         'poco'        => DI::baseUrl() . '/poco/'         . $user['nickname'],
 596                         'name-date'   => DateTimeFormat::utcNow(),
 597                         'uri-date'    => DateTimeFormat::utcNow(),
 598                         'avatar-date' => DateTimeFormat::utcNow(),
 599                         'closeness'   => 0
 600                 ];
 601
 602                 $return = true;
 603
 604                 // Only create the entry if it doesn't exist yet
 605                 if (!DBA::exists('contact', ['uid' => $uid, 'self' => true])) {
 606                         $return = DBA::insert('contact', $contact);
 607                 }
 608
 609                 // Create the public contact
 610                 if (!DBA::exists('contact', ['nurl' => $contact['nurl'], 'uid' => 0])) {
 611                         $contact['self']   = false;
 612                         $contact['uid']    = 0;
 613                         $contact['prvkey'] = null;
 614
 615                         DBA::insert('contact', $contact, Database::INSERT_IGNORE);
 616                 }
 617
 618                 return $return;
 619         }
 620
 621         /**
 622          * Updates the self-contact for the provided user id
 623          *
 624          * @param int     $uid
 625          * @param boolean $update_avatar Force the avatar update
 626          * @throws HTTPException\InternalServerErrorException
 627          */
 628         public static function updateSelfFromUserID($uid, $update_avatar = false)
 629         {
 630                 $fields = ['id', 'name', 'nick', 'location', 'about', 'keywords', 'avatar', 'prvkey', 'pubkey',
 631                         'xmpp', 'contact-type', 'forum', 'prv', 'avatar-date', 'url', 'nurl', 'unsearchable',
 632                         'photo', 'thumb', 'micro', 'addr', 'request', 'notify', 'poll', 'confirm', 'poco'];
 633                 $self = DBA::selectFirst('contact', $fields, ['uid' => $uid, 'self' => true]);
 634                 if (!DBA::isResult($self)) {
 635                         return;
 636                 }
 637
 638                 $fields = ['nickname', 'page-flags', 'account-type', 'prvkey', 'pubkey'];
 639                 $user = DBA::selectFirst('user', $fields, ['uid' => $uid, 'account_expired' => false]);
 640                 if (!DBA::isResult($user)) {
 641                         return;
 642                 }
 643
 644                 $fields = ['name', 'photo', 'thumb', 'about', 'address', 'locality', 'region',
 645                         'country-name', 'pub_keywords', 'xmpp', 'net-publish'];
 646                 $profile = DBA::selectFirst('profile', $fields, ['uid' => $uid]);
 647                 if (!DBA::isResult($profile)) {
 648                         return;
 649                 }
 650
 651                 $file_suffix = 'jpg';
 652
 653                 $fields = ['name' => $profile['name'], 'nick' => $user['nickname'],
 654                         'avatar-date' => $self['avatar-date'], 'location' => Profile::formatLocation($profile),
 655                         'about' => $profile['about'], 'keywords' => $profile['pub_keywords'],
 656                         'contact-type' => $user['account-type'], 'prvkey' => $user['prvkey'],
 657                         'pubkey' => $user['pubkey'], 'xmpp' => $profile['xmpp']];
 658
 659                 // it seems as if ported accounts can have wrong values, so we make sure that now everything is fine.
 660                 $fields['url'] = DI::baseUrl() . '/profile/' . $user['nickname'];
 661                 $fields['nurl'] = Strings::normaliseLink($fields['url']);
 662                 $fields['addr'] = $user['nickname'] . '@' . substr(DI::baseUrl(), strpos(DI::baseUrl(), '://') + 3);
 663                 $fields['request'] = DI::baseUrl() . '/dfrn_request/' . $user['nickname'];
 664                 $fields['notify'] = DI::baseUrl() . '/dfrn_notify/' . $user['nickname'];
 665                 $fields['poll'] = DI::baseUrl() . '/dfrn_poll/'. $user['nickname'];
 666                 $fields['confirm'] = DI::baseUrl() . '/dfrn_confirm/' . $user['nickname'];
 667                 $fields['poco'] = DI::baseUrl() . '/poco/' . $user['nickname'];
 668
 669                 $avatar = Photo::selectFirst(['resource-id', 'type'], ['uid' => $uid, 'profile' => true]);
 670                 if (DBA::isResult($avatar)) {
 671                         if ($update_avatar) {
 672                                 $fields['avatar-date'] = DateTimeFormat::utcNow();
 673                         }
 674
 675                         // Creating the path to the avatar, beginning with the file suffix
 676                         $types = Images::supportedTypes();
 677                         if (isset($types[$avatar['type']])) {
 678                                 $file_suffix = $types[$avatar['type']];
 679                         }
 680
 681                         // We are adding a timestamp value so that other systems won't use cached content
 682                         $timestamp = strtotime($fields['avatar-date']);
 683
 684                         $prefix = DI::baseUrl() . '/photo/' .$avatar['resource-id'] . '-';
 685                         $suffix = '.' . $file_suffix . '?ts=' . $timestamp;
 686
 687                         $fields['photo'] = $prefix . '4' . $suffix;
 688                         $fields['thumb'] = $prefix . '5' . $suffix;
 689                         $fields['micro'] = $prefix . '6' . $suffix;
 690                 } else {
 691                         // We hadn't found a photo entry, so we use the default avatar
 692                         $fields['photo'] = self::getDefaultAvatar($fields, Proxy::SIZE_SMALL);
 693                         $fields['thumb'] = self::getDefaultAvatar($fields, Proxy::SIZE_THUMB);
 694                         $fields['micro'] = self::getDefaultAvatar($fields, Proxy::SIZE_MICRO);
 695                 }
 696
 697                 $fields['avatar'] = DI::baseUrl() . '/photo/profile/' .$uid . '.' . $file_suffix;
 698                 $fields['forum'] = $user['page-flags'] == User::PAGE_FLAGS_COMMUNITY;
 699                 $fields['prv'] = $user['page-flags'] == User::PAGE_FLAGS_PRVGROUP;
 700                 $fields['unsearchable'] = !$profile['net-publish'];
 701
 702                 $update = false;
 703
 704                 foreach ($fields as $field => $content) {
 705                         if ($self[$field] != $content) {
 706                                 $update = true;
 707                         }
 708                 }
 709
 710                 if ($update) {
 711                         if ($fields['name'] != $self['name']) {
 712                                 $fields['name-date'] = DateTimeFormat::utcNow();
 713                         }
 714                         $fields['updated'] = DateTimeFormat::utcNow();
 715                         DBA::update('contact', $fields, ['id' => $self['id']]);
 716
 717                         // Update the public contact as well
 718                         DBA::update('contact', $fields, ['uid' => 0, 'nurl' => $self['nurl']]);
 719
 720                         // Update the profile
 721                         $fields = ['photo' => DI::baseUrl() . '/photo/profile/' .$uid . '.' . $file_suffix,
 722                                 'thumb' => DI::baseUrl() . '/photo/avatar/' . $uid .'.' . $file_suffix];
 723                         DBA::update('profile', $fields, ['uid' => $uid]);
 724                 }
 725         }
 726
 727         /**
 728          * Marks a contact for removal
 729          *
 730          * @param int $id contact id
 731          * @return null
 732          * @throws HTTPException\InternalServerErrorException
 733          */
 734         public static function remove($id)
 735         {
 736                 // We want just to make sure that we don't delete our "self" contact
 737                 $contact = DBA::selectFirst('contact', ['uid'], ['id' => $id, 'self' => false]);
 738                 if (!DBA::isResult($contact)) {
 739                         return;
 740                 }
 741
 742                 // Archive the contact
 743                 DBA::update('contact', ['archive' => true, 'network' => Protocol::PHANTOM, 'deleted' => true], ['id' => $id]);
 744
 745                 // Delete it in the background
 746                 Worker::add(PRIORITY_MEDIUM, 'RemoveContact', $id);
 747         }
 748
 749         /**
 750          * Sends an unfriend message. Does not remove the contact
 751          *
 752          * @param array   $user     User unfriending
 753          * @param array   $contact  Contact unfriended
 754          * @param boolean $dissolve Remove the contact on the remote side
 755          * @return void
 756          * @throws HTTPException\InternalServerErrorException
 757          * @throws \ImagickException
 758          */
 759         public static function terminateFriendship(array $user, array $contact, $dissolve = false)
 760         {
 761                 if (empty($contact['network'])) {
 762                         return;
 763                 }
 764
 765                 $protocol = $contact['network'];
 766                 if (($protocol == Protocol::DFRN) && !self::isLegacyDFRNContact($contact)) {
 767                         $protocol = Protocol::ACTIVITYPUB;
 768                 }
 769
 770                 if (($protocol == Protocol::DFRN) && $dissolve) {
 771                         DFRN::deliver($user, $contact, 'placeholder', true);
 772                 } elseif (in_array($protocol, [Protocol::OSTATUS, Protocol::DFRN])) {
 773                         // create an unfollow slap
 774                         $item = [];
 775                         $item['verb'] = Activity::O_UNFOLLOW;
 776                         $item['gravity'] = GRAVITY_ACTIVITY;
 777                         $item['follow'] = $contact["url"];
 778                         $item['body'] = '';
 779                         $item['title'] = '';
 780                         $item['guid'] = '';
 781                         $item['uri-id'] = 0;
 782                         $slap = OStatus::salmon($item, $user);
 783
 784                         if (!empty($contact['notify'])) {
 785                                 Salmon::slapper($user, $contact['notify'], $slap);
 786                         }
 787                 } elseif ($protocol == Protocol::DIASPORA) {
 788                         Diaspora::sendUnshare($user, $contact);
 789                 } elseif ($protocol == Protocol::ACTIVITYPUB) {
 790                         ActivityPub\Transmitter::sendContactUndo($contact['url'], $contact['id'], $user['uid']);
 791
 792                         if ($dissolve) {
 793                                 ActivityPub\Transmitter::sendContactReject($contact['url'], $contact['hub-verify'], $user['uid']);
 794                         }
 795                 }
 796         }
 797
 798         /**
 799          * Marks a contact for archival after a communication issue delay
 800          *
 801          * Contact has refused to recognise us as a friend. We will start a countdown.
 802          * If they still don't recognise us in 32 days, the relationship is over,
 803          * and we won't waste any more time trying to communicate with them.
 804          * This provides for the possibility that their database is temporarily messed
 805          * up or some other transient event and that there's a possibility we could recover from it.
 806          *
 807          * @param array $contact contact to mark for archival
 808          * @return null
 809          * @throws HTTPException\InternalServerErrorException
 810          */
 811         public static function markForArchival(array $contact)
 812         {
 813                 if (!isset($contact['url']) && !empty($contact['id'])) {
 814                         $fields = ['id', 'url', 'archive', 'self', 'term-date'];
 815                         $contact = DBA::selectFirst('contact', $fields, ['id' => $contact['id']]);
 816                         if (!DBA::isResult($contact)) {
 817                                 return;
 818                         }
 819                 } elseif (!isset($contact['url'])) {
 820                         Logger::info('Empty contact', ['contact' => $contact, 'callstack' => System::callstack(20)]);
 821                 }
 822
 823                 Logger::info('Contact is marked for archival', ['id' => $contact['id'], 'term-date' => $contact['term-date']]);
 824
 825                 // Contact already archived or "self" contact? => nothing to do
 826                 if ($contact['archive'] || $contact['self']) {
 827                         return;
 828                 }
 829
 830                 if ($contact['term-date'] <= DBA::NULL_DATETIME) {
 831                         DBA::update('contact', ['term-date' => DateTimeFormat::utcNow()], ['id' => $contact['id']]);
 832                         DBA::update('contact', ['term-date' => DateTimeFormat::utcNow()], ['`nurl` = ? AND `term-date` <= ? AND NOT `self`', Strings::normaliseLink($contact['url']), DBA::NULL_DATETIME]);
 833                 } else {
 834                         /* @todo
 835                          * We really should send a notification to the owner after 2-3 weeks
 836                          * so they won't be surprised when the contact vanishes and can take
 837                          * remedial action if this was a serious mistake or glitch
 838                          */
 839
 840                         /// @todo Check for contact vitality via probing
 841                         $archival_days = DI::config()->get('system', 'archival_days', 32);
 842
 843                         $expiry = $contact['term-date'] . ' + ' . $archival_days . ' days ';
 844                         if (DateTimeFormat::utcNow() > DateTimeFormat::utc($expiry)) {
 845                                 /* Relationship is really truly dead. archive them rather than
 846                                  * delete, though if the owner tries to unarchive them we'll start
 847                                  * the whole process over again.
 848                                  */
 849                                 DBA::update('contact', ['archive' => true], ['id' => $contact['id']]);
 850                                 DBA::update('contact', ['archive' => true], ['nurl' => Strings::normaliseLink($contact['url']), 'self' => false]);
 851                         }
 852                 }
 853         }
 854
 855         /**
 856          * Cancels the archival countdown
 857          *
 858          * @see   Contact::markForArchival()
 859          *
 860          * @param array $contact contact to be unmarked for archival
 861          * @return null
 862          * @throws \Exception
 863          */
 864         public static function unmarkForArchival(array $contact)
 865         {
 866                 // Always unarchive the relay contact entry
 867                 if (!empty($contact['batch']) && !empty($contact['term-date']) && ($contact['term-date'] > DBA::NULL_DATETIME)) {
 868                         $fields = ['failed' => false, 'term-date' => DBA::NULL_DATETIME, 'archive' => false];
 869                         $condition = ['uid' => 0, 'network' => Protocol::FEDERATED, 'batch' => $contact['batch'], 'contact-type' => self::TYPE_RELAY];
 870                         if (!DBA::exists('contact', array_merge($condition, $fields))) {
 871                                 DBA::update('contact', $fields, $condition);
 872                         }
 873                 }
 874
 875                 $condition = ['`id` = ? AND (`term-date` > ? OR `archive`)', $contact['id'], DBA::NULL_DATETIME];
 876                 $exists = DBA::exists('contact', $condition);
 877
 878                 // We don't need to update, we never marked this contact for archival
 879                 if (!$exists) {
 880                         return;
 881                 }
 882
 883                 Logger::info('Contact is marked as vital again', ['id' => $contact['id'], 'term-date' => $contact['term-date']]);
 884
 885                 if (!isset($contact['url']) && !empty($contact['id'])) {
 886                         $fields = ['id', 'url', 'batch'];
 887                         $contact = DBA::selectFirst('contact', $fields, ['id' => $contact['id']]);
 888                         if (!DBA::isResult($contact)) {
 889                                 return;
 890                         }
 891                 }
 892
 893                 // It's a miracle. Our dead contact has inexplicably come back to life.
 894                 $fields = ['failed' => false, 'term-date' => DBA::NULL_DATETIME, 'archive' => false];
 895                 DBA::update('contact', $fields, ['id' => $contact['id']]);
 896                 DBA::update('contact', $fields, ['nurl' => Strings::normaliseLink($contact['url']), 'self' => false]);
 897         }
 898
 899         /**
 900          * Returns the data array for the photo menu of a given contact
 901          *
 902          * @param array $contact contact
 903          * @param int   $uid     optional, default 0
 904          * @return array
 905          * @throws HTTPException\InternalServerErrorException
 906          * @throws \ImagickException
 907          */
 908         public static function photoMenu(array $contact, $uid = 0)
 909         {
 910                 $pm_url = '';
 911                 $status_link = '';
 912                 $photos_link = '';
 913                 $contact_drop_link = '';
 914                 $poke_link = '';
 915
 916                 if ($uid == 0) {
 917                         $uid = local_user();
 918                 }
 919
 920                 if (empty($contact['uid']) || ($contact['uid'] != $uid)) {
 921                         if ($uid == 0) {
 922                                 $profile_link = self::magicLinkByContact($contact);
 923                                 $menu = ['profile' => [DI::l10n()->t('View Profile'), $profile_link, true]];
 924
 925                                 return $menu;
 926                         }
 927
 928                         // Look for our own contact if the uid doesn't match and isn't public
 929                         $contact_own = DBA::selectFirst('contact', [], ['nurl' => $contact['nurl'], 'network' => $contact['network'], 'uid' => $uid]);
 930                         if (DBA::isResult($contact_own)) {
 931                                 return self::photoMenu($contact_own, $uid);
 932                         }
 933                 }
 934
 935                 $sparkle = false;
 936                 if (($contact['network'] === Protocol::DFRN) && !$contact['self'] && empty($contact['pending'])) {
 937                         $sparkle = true;
 938                         $profile_link = DI::baseUrl() . '/redir/' . $contact['id'];
 939                 } else {
 940                         $profile_link = $contact['url'];
 941                 }
 942
 943                 if ($profile_link === 'mailbox') {
 944                         $profile_link = '';
 945                 }
 946
 947                 if ($sparkle) {
 948                         $status_link = $profile_link . '/status';
 949                         $photos_link = str_replace('/profile/', '/photos/', $profile_link);
 950                         $profile_link = $profile_link . '/profile';
 951                 }
 952
 953                 if (self::canReceivePrivateMessages($contact) && empty($contact['pending'])) {
 954                         $pm_url = DI::baseUrl() . '/message/new/' . $contact['id'];
 955                 }
 956
 957                 if (($contact['network'] == Protocol::DFRN) && !$contact['self'] && empty($contact['pending'])) {
 958                         $poke_link = 'contact/' . $contact['id'] . '/poke';
 959                 }
 960
 961                 $contact_url = DI::baseUrl() . '/contact/' . $contact['id'];
 962
 963                 $posts_link = DI::baseUrl() . '/contact/' . $contact['id'] . '/conversations';
 964
 965                 if (!$contact['self']) {
 966                         $contact_drop_link = DI::baseUrl() . '/contact/' . $contact['id'] . '/drop?confirm=1';
 967                 }
 968
 969                 $follow_link = '';
 970                 $unfollow_link = '';
 971                 if (!$contact['self'] && in_array($contact['network'], Protocol::NATIVE_SUPPORT)) {
 972                         if ($contact['uid'] && in_array($contact['rel'], [self::SHARING, self::FRIEND])) {
 973                                 $unfollow_link = 'unfollow?url=' . urlencode($contact['url']) . '&auto=1';
 974                         } elseif(!$contact['pending']) {
 975                                 $follow_link = 'follow?url=' . urlencode($contact['url']) . '&auto=1';
 976                         }
 977                 }
 978
 979                 if (!empty($follow_link) || !empty($unfollow_link)) {
 980                         $contact_drop_link = '';
 981                 }
 982
 983                 /**
 984                  * Menu array:
 985                  * "name" => [ "Label", "link", (bool)Should the link opened in a new tab? ]
 986                  */
 987                 if (empty($contact['uid'])) {
 988                         $menu = [
 989                                 'profile' => [DI::l10n()->t('View Profile')  , $profile_link , true],
 990                                 'network' => [DI::l10n()->t('Network Posts') , $posts_link   , false],
 991                                 'edit'    => [DI::l10n()->t('View Contact')  , $contact_url  , false],
 992                                 'follow'  => [DI::l10n()->t('Connect/Follow'), $follow_link  , true],
 993                                 'unfollow'=> [DI::l10n()->t('UnFollow')      , $unfollow_link, true],
 994                         ];
 995                 } else {
 996                         $menu = [
 997                                 'status'  => [DI::l10n()->t('View Status')   , $status_link      , true],
 998                                 'profile' => [DI::l10n()->t('View Profile')  , $profile_link     , true],
 999                                 'photos'  => [DI::l10n()->t('View Photos')   , $photos_link      , true],
1000                                 'network' => [DI::l10n()->t('Network Posts') , $posts_link       , false],
1001                                 'edit'    => [DI::l10n()->t('View Contact')  , $contact_url      , false],
1002                                 'drop'    => [DI::l10n()->t('Drop Contact')  , $contact_drop_link, false],
1003                                 'pm'      => [DI::l10n()->t('Send PM')       , $pm_url           , false],
1004                                 'poke'    => [DI::l10n()->t('Poke')          , $poke_link        , false],
1005                                 'follow'  => [DI::l10n()->t('Connect/Follow'), $follow_link      , true],
1006                                 'unfollow'=> [DI::l10n()->t('UnFollow')      , $unfollow_link    , true],
1007                         ];
1008
1009                         if (!empty($contact['pending'])) {
1010                                 $intro = DBA::selectFirst('intro', ['id'], ['contact-id' => $contact['id']]);
1011                                 if (DBA::isResult($intro)) {
1012                                         $menu['follow'] = [DI::l10n()->t('Approve'), 'notifications/intros/' . $intro['id'], true];
1013                                 }
1014                         }
1015                 }
1016
1017                 $args = ['contact' => $contact, 'menu' => &$menu];
1018
1019                 Hook::callAll('contact_photo_menu', $args);
1020
1021                 $menucondensed = [];
1022
1023                 foreach ($menu as $menuname => $menuitem) {
1024                         if ($menuitem[1] != '') {
1025                                 $menucondensed[$menuname] = $menuitem;
1026                         }
1027                 }
1028
1029                 return $menucondensed;
1030         }
1031
1032         /**
1033          * Fetch the contact id for a given URL and user
1034          *
1035          * First lookup in the contact table to find a record matching either `url`, `nurl`,
1036          * `addr` or `alias`.
1037          *
1038          * If there's no record and we aren't looking for a public contact, we quit.
1039          * If there's one, we check that it isn't time to update the picture else we
1040          * directly return the found contact id.
1041          *
1042          * Second, we probe the provided $url whether it's http://server.tld/profile or
1043          * nick@server.tld. We quit if we can't get any info back.
1044          *
1045          * Third, we create the contact record if it doesn't exist
1046          *
1047          * Fourth, we update the existing record with the new data (avatar, alias, nick)
1048          * if there's any updates
1049          *
1050          * @param string  $url       Contact URL
1051          * @param integer $uid       The user id for the contact (0 = public contact)
1052          * @param boolean $update    true = always update, false = never update, null = update when not found
1053          * @param array   $default   Default value for creating the contact when everything else fails
1054          *
1055          * @return integer Contact ID
1056          * @throws HTTPException\InternalServerErrorException
1057          * @throws \ImagickException
1058          */
1059         public static function getIdForURL($url, $uid = 0, $update = null, $default = [])
1060         {
1061                 $contact_id = 0;
1062
1063                 if ($url == '') {
1064                         Logger::notice('Empty url, quitting', ['url' => $url, 'user' => $uid, 'default' => $default]);
1065                         return 0;
1066                 }
1067
1068                 $contact = self::getByURL($url, false, ['id', 'network'], $uid);
1069
1070                 if (!empty($contact)) {
1071                         $contact_id = $contact["id"];
1072
1073                         if (empty($update)) {
1074                                 Logger::debug('Contact found', ['url' => $url, 'uid' => $uid, 'update' => $update, 'cid' => $contact_id]);
1075                                 return $contact_id;
1076                         }
1077                 } elseif ($uid != 0) {
1078                         Logger::debug('Contact does not exist for the user', ['url' => $url, 'uid' => $uid, 'update' => $update]);
1079                         return 0;
1080                 } elseif (empty($default) && !is_null($update) && !$update) {
1081                         Logger::info('Contact not found, update not desired', ['url' => $url, 'uid' => $uid, 'update' => $update]);
1082                         return 0;
1083                 }
1084
1085                 $data = [];
1086
1087                 if (empty($default['network']) || $update) {
1088                         $data = Probe::uri($url, "", $uid);
1089
1090                         // Take the default values when probing failed
1091                         if (!empty($default) && !in_array($data["network"], array_merge(Protocol::NATIVE_SUPPORT, [Protocol::PUMPIO]))) {
1092                                 $data = array_merge($data, $default);
1093                         }
1094                 } elseif (!empty($default['network'])) {
1095                         $data = $default;
1096                 }
1097
1098                 if (($uid == 0) && (empty($data['network']) || ($data['network'] == Protocol::PHANTOM))) {
1099                         // Fetch data for the public contact via the first found personal contact
1100                         /// @todo Check if this case can happen at all (possibly with mail accounts?)
1101                         $fields = ['name', 'nick', 'url', 'addr', 'alias', 'avatar', 'contact-type',
1102                                 'keywords', 'location', 'about', 'unsearchable', 'batch', 'notify', 'poll',
1103                                 'request', 'confirm', 'poco', 'subscribe', 'network', 'baseurl', 'gsid'];
1104
1105                         $personal_contact = DBA::selectFirst('contact', $fields, ["`addr` = ? AND `uid` != 0", $url]);
1106                         if (!DBA::isResult($personal_contact)) {
1107                                 $personal_contact = DBA::selectFirst('contact', $fields, ["`nurl` = ? AND `uid` != 0", Strings::normaliseLink($url)]);
1108                         }
1109
1110                         if (DBA::isResult($personal_contact)) {
1111                                 Logger::info('Take contact data from personal contact', ['url' => $url, 'update' => $update, 'contact' => $personal_contact, 'callstack' => System::callstack(20)]);
1112                                 $data = $personal_contact;
1113                                 $data['photo'] = $personal_contact['avatar'];
1114                                 $data['account-type'] = $personal_contact['contact-type'];
1115                                 $data['hide'] = $personal_contact['unsearchable'];
1116                                 unset($data['avatar']);
1117                                 unset($data['contact-type']);
1118                                 unset($data['unsearchable']);
1119                         }
1120                 }
1121
1122                 if (empty($data['network']) || ($data['network'] == Protocol::PHANTOM)) {
1123                         Logger::notice('No valid network found', ['url' => $url, 'uid' => $uid, 'default' => $default, 'update' => $update, 'callstack' => System::callstack(20)]);
1124                         return 0;
1125                 }
1126
1127                 if (!$contact_id) {
1128                         $urls = [Strings::normaliseLink($url), Strings::normaliseLink($data['url'])];
1129                         if (!empty($data['alias'])) {
1130                                 $urls[] = Strings::normaliseLink($data['alias']);
1131                         }
1132                         $contact = self::selectFirst(['id'], ['nurl' => $urls, 'uid' => $uid]);
1133                         if (!empty($contact['id'])) {
1134                                 $contact_id = $contact['id'];
1135                                 Logger::info('Fetched id by url', ['cid' => $contact_id, 'uid' => $uid, 'url' => $url, 'data' => $data]);
1136                         }
1137                 }
1138
1139                 if (!$contact_id) {
1140                         // We only insert the basic data. The rest will be done in "updateFromProbeArray"
1141                         $fields = [
1142                                 'uid'       => $uid,
1143                                 'url'       => $data['url'],
1144                                 'nurl'      => Strings::normaliseLink($data['url']),
1145                                 'network'   => $data['network'],
1146                                 'created'   => DateTimeFormat::utcNow(),
1147                                 'rel'       => self::SHARING,
1148                                 'writable'  => 1,
1149                                 'blocked'   => 0,
1150                                 'readonly'  => 0,
1151                                 'pending'   => 0];
1152
1153                         $condition = ['nurl' => Strings::normaliseLink($data["url"]), 'uid' => $uid, 'deleted' => false];
1154
1155                         // Before inserting we do check if the entry does exist now.
1156                         if (DI::lock()->acquire(self::LOCK_INSERT, 0)) {
1157                                 $contact = DBA::selectFirst('contact', ['id'], $condition, ['order' => ['id']]);
1158                                 if (DBA::isResult($contact)) {
1159                                         $contact_id = $contact['id'];
1160                                         Logger::notice('Contact had been created (shortly) before', ['id' => $contact_id, 'url' => $url, 'uid' => $uid]);
1161                                 } else {
1162                                         DBA::insert('contact', $fields);
1163                                         $contact_id = DBA::lastInsertId();
1164                                         if ($contact_id) {
1165                                                 Logger::info('Contact inserted', ['id' => $contact_id, 'url' => $url, 'uid' => $uid]);
1166                                         }
1167                                 }
1168                                 DI::lock()->release(self::LOCK_INSERT);
1169                         } else {
1170                                 Logger::warning('Contact lock had not been acquired');
1171                         }
1172
1173                         if (!$contact_id) {
1174                                 Logger::info('Contact was not inserted', ['url' => $url, 'uid' => $uid]);
1175                                 return 0;
1176                         }
1177                 } else {
1178                         Logger::info('Contact will be updated', ['url' => $url, 'uid' => $uid, 'update' => $update, 'cid' => $contact_id]);
1179                 }
1180
1181                 self::updateFromProbeArray($contact_id, $data);
1182
1183                 // Don't return a number for a deleted account
1184                 if (!empty($data['account-type']) && $data['account-type'] == User::ACCOUNT_TYPE_DELETED) {
1185                         Logger::info('Contact is a tombstone', ['url' => $url, 'uid' => $uid]);
1186                         return 0;
1187                 }
1188
1189                 return $contact_id;
1190         }
1191
1192         /**
1193          * Checks if the contact is archived
1194          *
1195          * @param int $cid contact id
1196          *
1197          * @return boolean Is the contact archived?
1198          * @throws HTTPException\InternalServerErrorException
1199          */
1200         public static function isArchived(int $cid)
1201         {
1202                 if ($cid == 0) {
1203                         return false;
1204                 }
1205
1206                 $contact = DBA::selectFirst('contact', ['archive', 'url', 'batch'], ['id' => $cid]);
1207                 if (!DBA::isResult($contact)) {
1208                         return false;
1209                 }
1210
1211                 if ($contact['archive']) {
1212                         return true;
1213                 }
1214
1215                 // Check status of ActivityPub endpoints
1216                 $apcontact = APContact::getByURL($contact['url'], false);
1217                 if (!empty($apcontact)) {
1218                         if (!empty($apcontact['inbox']) && DBA::exists('inbox-status', ['archive' => true, 'url' => $apcontact['inbox']])) {
1219                                 return true;
1220                         }
1221
1222                         if (!empty($apcontact['sharedinbox']) && DBA::exists('inbox-status', ['archive' => true, 'url' => $apcontact['sharedinbox']])) {
1223                                 return true;
1224                         }
1225                 }
1226
1227                 // Check status of Diaspora endpoints
1228                 if (!empty($contact['batch'])) {
1229                         $condition = ['archive' => true, 'uid' => 0, 'network' => Protocol::FEDERATED, 'batch' => $contact['batch'], 'contact-type' => self::TYPE_RELAY];
1230                         return DBA::exists('contact', $condition);
1231                 }
1232
1233                 return false;
1234         }
1235
1236         /**
1237          * Checks if the contact is blocked
1238          *
1239          * @param int $cid contact id
1240          *
1241          * @return boolean Is the contact blocked?
1242          * @throws HTTPException\InternalServerErrorException
1243          */
1244         public static function isBlocked($cid)
1245         {
1246                 if ($cid == 0) {
1247                         return false;
1248                 }
1249
1250                 $blocked = DBA::selectFirst('contact', ['blocked', 'url'], ['id' => $cid]);
1251                 if (!DBA::isResult($blocked)) {
1252                         return false;
1253                 }
1254
1255                 if (Network::isUrlBlocked($blocked['url'])) {
1256                         return true;
1257                 }
1258
1259                 return (bool) $blocked['blocked'];
1260         }
1261
1262         /**
1263          * Checks if the contact is hidden
1264          *
1265          * @param int $cid contact id
1266          *
1267          * @return boolean Is the contact hidden?
1268          * @throws \Exception
1269          */
1270         public static function isHidden($cid)
1271         {
1272                 if ($cid == 0) {
1273                         return false;
1274                 }
1275
1276                 $hidden = DBA::selectFirst('contact', ['hidden'], ['id' => $cid]);
1277                 if (!DBA::isResult($hidden)) {
1278                         return false;
1279                 }
1280                 return (bool) $hidden['hidden'];
1281         }
1282
1283         /**
1284          * Returns posts from a given contact url
1285          *
1286          * @param string $contact_url Contact URL
1287          * @param bool   $thread_mode
1288          * @param int    $update      Update mode
1289          * @param int    $parent      Item parent ID for the update mode
1290          * @return string posts in HTML
1291          * @throws \Exception
1292          */
1293         public static function getPostsFromUrl($contact_url, $thread_mode = false, $update = 0, $parent = 0)
1294         {
1295                 return self::getPostsFromId(self::getIdForURL($contact_url), $thread_mode, $update, $parent);
1296         }
1297
1298         /**
1299          * Returns posts from a given contact id
1300          *
1301          * @param int  $cid         Contact ID
1302          * @param bool $thread_mode
1303          * @param int  $update      Update mode
1304          * @param int  $parent     Item parent ID for the update mode
1305          * @return string posts in HTML
1306          * @throws \Exception
1307          */
1308         public static function getPostsFromId($cid, $thread_mode = false, $update = 0, $parent = 0)
1309         {
1310                 $a = DI::app();
1311
1312                 $contact = DBA::selectFirst('contact', ['contact-type', 'network'], ['id' => $cid]);
1313                 if (!DBA::isResult($contact)) {
1314                         return '';
1315                 }
1316
1317                 if (empty($contact["network"]) || in_array($contact["network"], Protocol::FEDERATED)) {
1318                         $sql = "(`uid` = 0 OR (`uid` = ? AND NOT `global`))";
1319                 } else {
1320                         $sql = "`uid` = ?";
1321                 }
1322
1323                 $contact_field = ((($contact["contact-type"] == self::TYPE_COMMUNITY) || ($contact['network'] == Protocol::MAIL)) ? 'owner-id' : 'author-id');
1324
1325                 if ($thread_mode) {
1326                         $condition = ["((`$contact_field` = ? AND `gravity` = ?) OR (`author-id` = ? AND `gravity` = ? AND `vid` = ?)) AND " . $sql,
1327                                 $cid, GRAVITY_PARENT, $cid, GRAVITY_ACTIVITY, Verb::getID(Activity::ANNOUNCE), local_user()];
1328                 } else {
1329                         $condition = ["`$contact_field` = ? AND `gravity` IN (?, ?) AND " . $sql,
1330                                 $cid, GRAVITY_PARENT, GRAVITY_COMMENT, local_user()];
1331                 }
1332
1333                 if (!empty($parent)) {
1334                         $condition = DBA::mergeConditions($condition, ['parent' => $parent]);
1335                 } else {
1336                         $last_received = isset($_GET['last_received']) ? DateTimeFormat::utc($_GET['last_received']) : '';
1337                         if (!empty($last_received)) {
1338                                 $condition = DBA::mergeConditions($condition, ["`received` < ?", $last_received]);
1339                         }
1340                 }
1341
1342                 if (DI::mode()->isMobile()) {
1343                         $itemsPerPage = DI::pConfig()->get(local_user(), 'system', 'itemspage_mobile_network',
1344                                 DI::config()->get('system', 'itemspage_network_mobile'));
1345                 } else {
1346                         $itemsPerPage = DI::pConfig()->get(local_user(), 'system', 'itemspage_network',
1347                                 DI::config()->get('system', 'itemspage_network'));
1348                 }
1349
1350                 $pager = new Pager(DI::l10n(), DI::args()->getQueryString(), $itemsPerPage);
1351
1352                 $params = ['order' => ['received' => true], 'limit' => [$pager->getStart(), $pager->getItemsPerPage()]];
1353
1354                 if (DI::pConfig()->get(local_user(), 'system', 'infinite_scroll')) {
1355                         $tpl = Renderer::getMarkupTemplate('infinite_scroll_head.tpl');
1356                         $o = Renderer::replaceMacros($tpl, ['$reload_uri' => DI::args()->getQueryString()]);
1357                 } else {
1358                         $o = '';
1359                 }
1360
1361                 if ($thread_mode) {
1362                         $items = Post::toArray(Post::selectForUser(local_user(), ['uri-id', 'gravity', 'parent-uri-id', 'thr-parent-id', 'author-id'], $condition, $params));
1363
1364                         $o .= conversation($a, $items, 'contacts', $update, false, 'commented', local_user());
1365                 } else {
1366                         $items = Post::toArray(Post::selectForUser(local_user(), Item::DISPLAY_FIELDLIST, $condition, $params));
1367
1368                         $o .= conversation($a, $items, 'contact-posts', $update);
1369                 }
1370
1371                 if (!$update) {
1372                         if (DI::pConfig()->get(local_user(), 'system', 'infinite_scroll')) {
1373                                 $o .= HTML::scrollLoader();
1374                         } else {
1375                                 $o .= $pager->renderMinimal(count($items));
1376                         }
1377                 }
1378
1379                 return $o;
1380         }
1381
1382         /**
1383          * Returns the account type name
1384          *
1385          * The function can be called with either the user or the contact array
1386          *
1387          * @param array $contact contact or user array
1388          * @return string
1389          */
1390         public static function getAccountType(array $contact)
1391         {
1392                 // There are several fields that indicate that the contact or user is a forum
1393                 // "page-flags" is a field in the user table,
1394                 // "forum" and "prv" are used in the contact table. They stand for User::PAGE_FLAGS_COMMUNITY and User::PAGE_FLAGS_PRVGROUP.
1395                 if ((isset($contact['page-flags']) && (intval($contact['page-flags']) == User::PAGE_FLAGS_COMMUNITY))
1396                         || (isset($contact['page-flags']) && (intval($contact['page-flags']) == User::PAGE_FLAGS_PRVGROUP))
1397                         || (isset($contact['forum']) && intval($contact['forum']))
1398                         || (isset($contact['prv']) && intval($contact['prv']))
1399                         || (isset($contact['community']) && intval($contact['community']))
1400                 ) {
1401                         $type = self::TYPE_COMMUNITY;
1402                 } else {
1403                         $type = self::TYPE_PERSON;
1404                 }
1405
1406                 // The "contact-type" (contact table) and "account-type" (user table) are more general then the chaos from above.
1407                 if (isset($contact["contact-type"])) {
1408                         $type = $contact["contact-type"];
1409                 }
1410
1411                 if (isset($contact["account-type"])) {
1412                         $type = $contact["account-type"];
1413                 }
1414
1415                 switch ($type) {
1416                         case self::TYPE_ORGANISATION:
1417                                 $account_type = DI::l10n()->t("Organisation");
1418                                 break;
1419
1420                         case self::TYPE_NEWS:
1421                                 $account_type = DI::l10n()->t('News');
1422                                 break;
1423
1424                         case self::TYPE_COMMUNITY:
1425                                 $account_type = DI::l10n()->t("Forum");
1426                                 break;
1427
1428                         default:
1429                                 $account_type = "";
1430                                 break;
1431                 }
1432
1433                 return $account_type;
1434         }
1435
1436         /**
1437          * Blocks a contact
1438          *
1439          * @param int $cid
1440          * @return bool
1441          * @throws \Exception
1442          */
1443         public static function block($cid, $reason = null)
1444         {
1445                 $return = DBA::update('contact', ['blocked' => true, 'block_reason' => $reason], ['id' => $cid]);
1446
1447                 return $return;
1448         }
1449
1450         /**
1451          * Unblocks a contact
1452          *
1453          * @param int $cid
1454          * @return bool
1455          * @throws \Exception
1456          */
1457         public static function unblock($cid)
1458         {
1459                 $return = DBA::update('contact', ['blocked' => false, 'block_reason' => null], ['id' => $cid]);
1460
1461                 return $return;
1462         }
1463
1464         /**
1465          * Ensure that cached avatar exist
1466          *
1467          * @param integer $cid
1468          */
1469         public static function checkAvatarCache(int $cid)
1470         {
1471                 $contact = DBA::selectFirst('contact', ['url', 'avatar', 'photo', 'thumb', 'micro'], ['id' => $cid, 'uid' => 0, 'self' => false]);
1472                 if (!DBA::isResult($contact)) {
1473                         return;
1474                 }
1475
1476                 if (empty($contact['avatar']) || (!empty($contact['photo']) && !empty($contact['thumb']) && !empty($contact['micro']))) {
1477                         return;
1478                 }
1479
1480                 Logger::info('Adding avatar cache', ['id' => $cid, 'contact' => $contact]);
1481
1482                 self::updateAvatar($cid, $contact['avatar'], true);
1483         }
1484
1485         /**
1486          * Return the photo path for a given contact array in the given size
1487          *
1488          * @param array $contact    contact array
1489          * @param string $field     Fieldname of the photo in the contact array
1490          * @param string $size      Size of the avatar picture
1491          * @param string $avatar    Avatar path that is displayed when no photo had been found
1492          * @param bool  $no_update Don't perfom an update if no cached avatar was found
1493          * @return string photo path
1494          */
1495         private static function getAvatarPath(array $contact, string $field, string $size, string $avatar, $no_update = false)
1496         {
1497                 if (!empty($contact)) {
1498                         $contact = self::checkAvatarCacheByArray($contact, $no_update);
1499                         if (!empty($contact[$field])) {
1500                                 $avatar = $contact[$field];
1501                         }
1502                 }
1503
1504                 if ($no_update && empty($avatar) && !empty($contact['avatar'])) {
1505                         $avatar = $contact['avatar'];
1506                 }
1507
1508                 if (empty($avatar)) {
1509                         $avatar = self::getDefaultAvatar([], $size);
1510                 }
1511
1512                 if (Proxy::isLocalImage($avatar)) {
1513                         return $avatar;
1514                 } else {
1515                         return Proxy::proxifyUrl($avatar, false, $size);
1516                 }
1517         }
1518
1519         /**
1520          * Return the photo path for a given contact array
1521          *
1522          * @param array  $contact   Contact array
1523          * @param string $avatar    Avatar path that is displayed when no photo had been found
1524          * @param bool   $no_update Don't perfom an update if no cached avatar was found
1525          * @return string photo path
1526          */
1527         public static function getPhoto(array $contact, string $avatar = '', bool $no_update = false)
1528         {
1529                 return self::getAvatarPath($contact, 'photo', Proxy::SIZE_SMALL, $avatar, $no_update);
1530         }
1531
1532         /**
1533          * Return the photo path (thumb size) for a given contact array
1534          *
1535          * @param array  $contact   Contact array
1536          * @param string $avatar    Avatar path that is displayed when no photo had been found
1537          * @param bool   $no_update Don't perfom an update if no cached avatar was found
1538          * @return string photo path
1539          */
1540         public static function getThumb(array $contact, string $avatar = '', bool $no_update = false)
1541         {
1542                 return self::getAvatarPath($contact, 'thumb', Proxy::SIZE_THUMB, $avatar, $no_update);
1543         }
1544
1545         /**
1546          * Return the photo path (micro size) for a given contact array
1547          *
1548          * @param array  $contact   Contact array
1549          * @param string $avatar    Avatar path that is displayed when no photo had been found
1550          * @param bool   $no_update Don't perfom an update if no cached avatar was found
1551          * @return string photo path
1552          */
1553         public static function getMicro(array $contact, string $avatar = '', bool $no_update = false)
1554         {
1555                 return self::getAvatarPath($contact, 'micro', Proxy::SIZE_MICRO, $avatar, $no_update);
1556         }
1557
1558         /**
1559          * Check the given contact array for avatar cache fields
1560          *
1561          * @param array $contact
1562          * @param bool  $no_update Don't perfom an update if no cached avatar was found
1563          * @return array contact array with avatar cache fields
1564          */
1565         private static function checkAvatarCacheByArray(array $contact, bool $no_update = false)
1566         {
1567                 $update = false;
1568                 $contact_fields = [];
1569                 $fields = ['photo', 'thumb', 'micro'];
1570                 foreach ($fields as $field) {
1571                         if (isset($contact[$field])) {
1572                                 $contact_fields[] = $field;
1573                         }
1574                         if (isset($contact[$field]) && empty($contact[$field])) {
1575                                 $update = true;
1576                         }
1577                 }
1578
1579                 if (!$update || $no_update) {
1580                         return $contact;
1581                 }
1582
1583                 if (!empty($contact['id']) && !empty($contact['avatar'])) {
1584                         self::updateAvatar($contact['id'], $contact['avatar'], true);
1585
1586                         $new_contact = self::getById($contact['id'], $contact_fields);
1587                         if (DBA::isResult($new_contact)) {
1588                                 // We only update the cache fields
1589                                 $contact = array_merge($contact, $new_contact);
1590                         }
1591                 }
1592
1593                 /// add the default avatars if the fields aren't filled
1594                 if (isset($contact['photo']) && empty($contact['photo'])) {
1595                         $contact['photo'] = self::getDefaultAvatar($contact, Proxy::SIZE_SMALL);
1596                 }
1597                 if (isset($contact['thumb']) && empty($contact['thumb'])) {
1598                         $contact['thumb'] = self::getDefaultAvatar($contact, Proxy::SIZE_THUMB);
1599                 }
1600                 if (isset($contact['micro']) && empty($contact['micro'])) {
1601                         $contact['micro'] = self::getDefaultAvatar($contact, Proxy::SIZE_MICRO);
1602                 }
1603
1604                 return $contact;
1605         }
1606
1607         /**
1608          * Fetch the default avatar for the given contact and size
1609          *
1610          * @param array $contact  contact array
1611          * @param string $size    Size of the avatar picture
1612          * @return void
1613          */
1614         public static function getDefaultAvatar(array $contact, string $size)
1615         {
1616                 switch ($size) {
1617                         case Proxy::SIZE_MICRO:
1618                                 $avatar['size'] = 48;
1619                                 $default = self::DEFAULT_AVATAR_MICRO;
1620                                 break;
1621
1622                         case Proxy::SIZE_THUMB:
1623                                 $avatar['size'] = 80;
1624                                 $default = self::DEFAULT_AVATAR_THUMB;
1625                                 break;
1626
1627                         case Proxy::SIZE_SMALL:
1628                         default:
1629                                 $avatar['size'] = 300;
1630                                 $default = self::DEFAULT_AVATAR_PHOTO;
1631                                 break;
1632                 }
1633
1634                 if (!DI::config()->get('system', 'remote_avatar_lookup')) {
1635                         return DI::baseUrl() . $default;
1636                 }
1637
1638                 if (!empty($contact['xmpp'])) {
1639                         $avatar['email'] = $contact['xmpp'];
1640                 } elseif (!empty($contact['addr'])) {
1641                         $avatar['email'] = $contact['addr'];
1642                 } elseif (!empty($contact['url'])) {
1643                         $avatar['email'] = $contact['url'];
1644                 } else {
1645                         return DI::baseUrl() . $default;
1646                 }
1647
1648                 $avatar['url'] = '';
1649                 $avatar['success'] = false;
1650
1651                 Hook::callAll('avatar_lookup', $avatar);
1652
1653                 if ($avatar['success'] && !empty($avatar['url'])) {
1654                         return $avatar['url'];
1655                 }
1656
1657                 return DI::baseUrl() . $default;
1658         }
1659
1660         /**
1661          * Updates the avatar links in a contact only if needed
1662          *
1663          * @param int    $cid          Contact id
1664          * @param string $avatar       Link to avatar picture
1665          * @param bool   $force        force picture update
1666          * @param bool   $create_cache Enforces the creation of cached avatar fields
1667          *
1668          * @return void
1669          * @throws HTTPException\InternalServerErrorException
1670          * @throws HTTPException\NotFoundException
1671          * @throws \ImagickException
1672          */
1673         public static function updateAvatar(int $cid, string $avatar, bool $force = false, bool $create_cache = false)
1674         {
1675                 $contact = DBA::selectFirst('contact', ['uid', 'avatar', 'photo', 'thumb', 'micro', 'xmpp', 'addr', 'nurl', 'url', 'network'],
1676                         ['id' => $cid, 'self' => false]);
1677                 if (!DBA::isResult($contact)) {
1678                         return;
1679                 }
1680
1681                 $uid = $contact['uid'];
1682
1683                 // Only update the cached photo links of public contacts when they already are cached
1684                 if (($uid == 0) && !$force && empty($contact['thumb']) && empty($contact['micro']) && !$create_cache) {
1685                         if ($contact['avatar'] != $avatar) {
1686                                 DBA::update('contact', ['avatar' => $avatar], ['id' => $cid]);
1687                                 Logger::info('Only update the avatar', ['id' => $cid, 'avatar' => $avatar, 'contact' => $contact]);
1688                         }
1689                         return;
1690                 }
1691
1692                 // User contacts use are updated through the public contacts
1693                 if (($uid != 0) && !in_array($contact['network'], [Protocol::FEED, Protocol::MAIL])) {
1694                         $pcid = self::getIdForURL($contact['url'], false);
1695                         if (!empty($pcid)) {
1696                                 Logger::debug('Update the private contact via the public contact', ['id' => $cid, 'uid' => $uid, 'public' => $pcid]);
1697                                 self::updateAvatar($pcid, $avatar, $force, true);
1698                                 return;
1699                         }
1700                 }
1701
1702                 $default_avatar = empty($avatar) || strpos($avatar, self::DEFAULT_AVATAR_PHOTO);
1703
1704                 if ($default_avatar) {
1705                         $avatar = self::getDefaultAvatar($contact, Proxy::SIZE_SMALL);
1706                 }
1707
1708                 if ($default_avatar && Proxy::isLocalImage($avatar)) {
1709                         $fields = ['avatar' => $avatar, 'avatar-date' => DateTimeFormat::utcNow(),
1710                                 'photo' => $avatar,
1711                                 'thumb' => self::getDefaultAvatar($contact, Proxy::SIZE_THUMB),
1712                                 'micro' => self::getDefaultAvatar($contact, Proxy::SIZE_MICRO)];
1713                         Logger::debug('Use default avatar', ['id' => $cid, 'uid' => $uid]);
1714                 }
1715
1716                 // Use the data from the self account
1717                 if (empty($fields)) {
1718                         $local_uid = User::getIdForURL($contact['url']);
1719                         if (!empty($local_uid)) {
1720                                 $fields = self::selectFirst(['avatar', 'avatar-date', 'photo', 'thumb', 'micro'], ['self' => true, 'uid' => $local_uid]);
1721                                 Logger::debug('Use owner data', ['id' => $cid, 'uid' => $uid, 'owner-uid' => $local_uid]);
1722                         }
1723                 }
1724
1725                 if (empty($fields)) {
1726                         $update = ($contact['avatar'] != $avatar) || $force;
1727
1728                         if (!$update) {
1729                                 $data = [
1730                                         $contact['photo'] ?? '',
1731                                         $contact['thumb'] ?? '',
1732                                         $contact['micro'] ?? '',
1733                                 ];
1734
1735                                 foreach ($data as $image_uri) {
1736                                         $image_rid = Photo::ridFromURI($image_uri);
1737                                         if ($image_rid && !Photo::exists(['resource-id' => $image_rid, 'uid' => $uid])) {
1738                                                 Logger::debug('Regenerating avatar', ['contact uid' => $uid, 'cid' => $cid, 'missing photo' => $image_rid, 'avatar' => $contact['avatar']]);
1739                                                 $update = true;
1740                                         }
1741                                 }
1742                         }
1743
1744                         if ($update) {
1745                                 $photos = Photo::importProfilePhoto($avatar, $uid, $cid, true);
1746                                 if ($photos) {
1747                                         $fields = ['avatar' => $avatar, 'photo' => $photos[0], 'thumb' => $photos[1], 'micro' => $photos[2], 'avatar-date' => DateTimeFormat::utcNow()];
1748                                         $update = !empty($fields);
1749                                         Logger::debug('Created new cached avatars', ['id' => $cid, 'uid' => $uid, 'owner-uid' => $local_uid]);
1750                                 } else {
1751                                         $update = false;
1752                                 }
1753                         }
1754                 } else {
1755                         $update = ($fields['photo'] . $fields['thumb'] . $fields['micro'] != $contact['photo'] . $contact['thumb'] . $contact['micro']) || $force;
1756                 }
1757
1758                 if (!$update) {
1759                         return;
1760                 }
1761
1762                 $cids = [];
1763                 $uids = [];
1764                 if (($uid == 0) && !in_array($contact['network'], [Protocol::FEED, Protocol::MAIL])) {
1765                         // Collect all user contacts of the given public contact
1766                         $personal_contacts = DBA::select('contact', ['id', 'uid'],
1767                                 ["`nurl` = ? AND `id` != ? AND NOT `self`", $contact['nurl'], $cid]);
1768                         while ($personal_contact = DBA::fetch($personal_contacts)) {
1769                                 $cids[] = $personal_contact['id'];
1770                                 $uids[] = $personal_contact['uid'];
1771                         }
1772                         DBA::close($personal_contacts);
1773
1774                         if (!empty($cids)) {
1775                                 // Delete possibly existing cached user contact avatars
1776                                 Photo::delete(['uid' => $uids, 'contact-id' => $cids, 'album' => Photo::CONTACT_PHOTOS]);
1777                         }
1778                 }
1779
1780                 $cids[] = $cid;
1781                 $uids[] = $uid;
1782                 Logger::info('Updating cached contact avatars', ['cid' => $cids, 'uid' => $uids, 'fields' => $fields]);
1783                 DBA::update('contact', $fields, ['id' => $cids]);
1784         }
1785
1786         public static function deleteContactByUrl(string $url)
1787         {
1788                 // Update contact data for all users
1789                 $condition = ['self' => false, 'nurl' => Strings::normaliseLink($url)];
1790                 $contacts = DBA::select('contact', ['id', 'uid'], $condition);
1791                 while ($contact = DBA::fetch($contacts)) {
1792                         Logger::info('Deleting contact', ['id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $url]);
1793                         self::remove($contact['id']);
1794                 }
1795         }
1796
1797         /**
1798          * Helper function for "updateFromProbe". Updates personal and public contact
1799          *
1800          * @param integer $id      contact id
1801          * @param integer $uid     user id
1802          * @param string  $old_url The previous profile URL of the contact
1803          * @param string  $new_url The profile URL of the contact
1804          * @param array   $fields  The fields that are updated
1805          *
1806          * @throws \Exception
1807          */
1808         private static function updateContact(int $id, int $uid, string $old_url, string $new_url, array $fields)
1809         {
1810                 if (Strings::normaliseLink($new_url) != Strings::normaliseLink($old_url)) {
1811                         Logger::notice('New URL differs from old URL', ['old' => $old_url, 'new' => $new_url]);
1812                         // @todo It is to decide what to do when the URL is changed
1813                 }
1814
1815                 if (!DBA::update('contact', $fields, ['id' => $id])) {
1816                         Logger::info('Couldn\'t update contact.', ['id' => $id, 'fields' => $fields]);
1817                         return;
1818                 }
1819
1820                 // Search for duplicated contacts and get rid of them
1821                 if (self::removeDuplicates(Strings::normaliseLink($new_url), $uid)) {
1822                         return;
1823                 }
1824
1825                 // Archive or unarchive the contact.
1826                 $contact = DBA::selectFirst('contact', [], ['id' => $id]);
1827                 if (!DBA::isResult($contact)) {
1828                         Logger::info('Couldn\'t select contact for archival.', ['id' => $id]);
1829                         return;
1830                 }
1831
1832                 if (isset($fields['failed'])) {
1833                         if ($fields['failed']) {
1834                                 self::markForArchival($contact);
1835                         } else {
1836                                 self::unmarkForArchival($contact);
1837                         }
1838                 }
1839
1840                 if ($contact['uid'] != 0) {
1841                         return;
1842                 }
1843
1844                 // Update contact data for all users
1845                 $condition = ['self' => false, 'nurl' => Strings::normaliseLink($old_url)];
1846
1847                 $condition['network'] = [Protocol::DFRN, Protocol::DIASPORA, Protocol::ACTIVITYPUB];
1848                 DBA::update('contact', $fields, $condition);
1849
1850                 // We mustn't set the update fields for OStatus contacts since they are updated in OnePoll
1851                 $condition['network'] = Protocol::OSTATUS;
1852
1853                 // If the contact failed, propagate the update fields to all contacts
1854                 if (empty($fields['failed'])) {
1855                         unset($fields['last-update']);
1856                         unset($fields['success_update']);
1857                         unset($fields['failure_update']);
1858                 }
1859
1860                 if (empty($fields)) {
1861                         return;
1862                 }
1863
1864                 DBA::update('contact', $fields, $condition);
1865         }
1866
1867         /**
1868          * Remove duplicated contacts
1869          *
1870          * @param string  $nurl  Normalised contact url
1871          * @param integer $uid   User id
1872          * @return boolean
1873          * @throws \Exception
1874          */
1875         public static function removeDuplicates(string $nurl, int $uid)
1876         {
1877                 $condition = ['nurl' => $nurl, 'uid' => $uid, 'deleted' => false, 'network' => Protocol::FEDERATED];
1878                 $count = DBA::count('contact', $condition);
1879                 if ($count <= 1) {
1880                         return false;
1881                 }
1882
1883                 $first_contact = DBA::selectFirst('contact', ['id', 'network'], $condition, ['order' => ['id']]);
1884                 if (!DBA::isResult($first_contact)) {
1885                         // Shouldn't happen - so we handle it
1886                         return false;
1887                 }
1888
1889                 $first = $first_contact['id'];
1890                 Logger::info('Found duplicates', ['count' => $count, 'first' => $first, 'uid' => $uid, 'nurl' => $nurl]);
1891                 if (($uid != 0 && ($first_contact['network'] == Protocol::DFRN))) {
1892                         // Don't handle non public DFRN duplicates by now (legacy DFRN is very special because of the key handling)
1893                         Logger::info('Not handling non public DFRN duplicate', ['uid' => $uid, 'nurl' => $nurl]);
1894                         return false;
1895                 }
1896
1897                 // Find all duplicates
1898                 $condition = ["`nurl` = ? AND `uid` = ? AND `id` != ? AND NOT `self` AND NOT `deleted`", $nurl, $uid, $first];
1899                 $duplicates = DBA::select('contact', ['id', 'network'], $condition);
1900                 while ($duplicate = DBA::fetch($duplicates)) {
1901                         if (!in_array($duplicate['network'], Protocol::FEDERATED)) {
1902                                 continue;
1903                         }
1904
1905                         Worker::add(PRIORITY_HIGH, 'MergeContact', $first, $duplicate['id'], $uid);
1906                 }
1907                 DBA::close($duplicates);
1908                 Logger::info('Duplicates handled', ['uid' => $uid, 'nurl' => $nurl, 'callstack' => System::callstack(20)]);
1909                 return true;
1910         }
1911
1912         /**
1913          * @param integer $id      contact id
1914          * @param string  $network Optional network we are probing for
1915          * @return boolean
1916          * @throws HTTPException\InternalServerErrorException
1917          * @throws \ImagickException
1918          */
1919         public static function updateFromProbe(int $id, string $network = '')
1920         {
1921                 $contact = DBA::selectFirst('contact', ['uid', 'url'], ['id' => $id]);
1922                 if (!DBA::isResult($contact)) {
1923                         return false;
1924                 }
1925
1926                 $ret = Probe::uri($contact['url'], $network, $contact['uid']);
1927                 return self::updateFromProbeArray($id, $ret);
1928         }
1929
1930         /**
1931          * @param integer $id      contact id
1932          * @param array   $ret     Probed data
1933          * @return boolean
1934          * @throws HTTPException\InternalServerErrorException
1935          * @throws \ImagickException
1936          */
1937         private static function updateFromProbeArray(int $id, array $ret)
1938         {
1939                 /*
1940                   Warning: Never ever fetch the public key via Probe::uri and write it into the contacts.
1941                   This will reliably kill your communication with old Friendica contacts.
1942                  */
1943
1944                 // These fields aren't updated by this routine:
1945                 // 'xmpp', 'sensitive'
1946
1947                 $fields = ['uid', 'avatar', 'name', 'nick', 'location', 'keywords', 'about', 'subscribe', 'manually-approve',
1948                         'unsearchable', 'url', 'addr', 'batch', 'notify', 'poll', 'request', 'confirm', 'poco',
1949                         'network', 'alias', 'baseurl', 'gsid', 'forum', 'prv', 'contact-type', 'pubkey', 'last-item'];
1950                 $contact = DBA::selectFirst('contact', $fields, ['id' => $id]);
1951                 if (!DBA::isResult($contact)) {
1952                         return false;
1953                 }
1954
1955                 if (self::isLocal($ret['url'])) {
1956                         Logger::info('Local contacts are not updated here.');
1957                         return true;
1958                 }
1959
1960                 if (!empty($ret['account-type']) && $ret['account-type'] == User::ACCOUNT_TYPE_DELETED) {
1961                         Logger::info('Deleted account', ['id' => $id, 'url' => $ret['url'], 'ret' => $ret]);
1962                         self::remove($id);
1963
1964                         // Delete all contacts with the same URL
1965                         self::deleteContactByUrl($ret['url']);
1966                         return true;
1967                 }
1968
1969                 $uid = $contact['uid'];
1970                 unset($contact['uid']);
1971
1972                 $pubkey = $contact['pubkey'];
1973                 unset($contact['pubkey']);
1974
1975                 $contact['photo'] = $contact['avatar'];
1976                 unset($contact['avatar']);
1977
1978                 $updated = DateTimeFormat::utcNow();
1979
1980                 // We must not try to update relay contacts via probe. They are no real contacts.
1981                 // We check after the probing to be able to correct falsely detected contact types.
1982                 if (($contact['contact-type'] == self::TYPE_RELAY) &&
1983                         (!Strings::compareLink($ret['url'], $contact['url']) || in_array($ret['network'], [Protocol::FEED, Protocol::PHANTOM]))) {
1984                         self::updateContact($id, $uid, $contact['url'], $contact['url'], ['failed' => false, 'last-update' => $updated, 'success_update' => $updated]);
1985                         Logger::info('Not updating relais', ['id' => $id, 'url' => $contact['url']]);
1986                         return true;
1987                 }
1988
1989                 // If Probe::uri fails the network code will be different ("feed" or "unkn")
1990                 if (($ret['network'] == Protocol::PHANTOM) || (($ret['network'] == Protocol::FEED) && ($ret['network'] != $contact['network']))) {
1991                         self::updateContact($id, $uid, $contact['url'], $ret['url'], ['failed' => true, 'last-update' => $updated, 'failure_update' => $updated]);
1992                         return false;
1993                 }
1994
1995                 if (isset($ret['hide']) && is_bool($ret['hide'])) {
1996                         $ret['unsearchable'] = $ret['hide'];
1997                 }
1998
1999                 if (isset($ret['account-type']) && is_int($ret['account-type'])) {
2000                         $ret['forum'] = false;
2001                         $ret['prv'] = false;
2002                         $ret['contact-type'] = $ret['account-type'];
2003                         if (($ret['contact-type'] == User::ACCOUNT_TYPE_COMMUNITY) && isset($ret['manually-approve'])) {
2004                                 $ret['forum'] = (bool)!$ret['manually-approve'];
2005                                 $ret['prv'] = (bool)!$ret['forum'];
2006                         }
2007                 }
2008
2009                 $new_pubkey = $ret['pubkey'] ?? '';
2010
2011                 if ($uid == 0) {
2012                         $ret['last-item'] = Probe::getLastUpdate($ret);
2013                         Logger::info('Fetched last item', ['id' => $id, 'probed_url' => $ret['url'], 'last-item' => $ret['last-item'], 'callstack' => System::callstack(20)]);
2014                 }
2015
2016                 $update = false;
2017
2018                 // make sure to not overwrite existing values with blank entries except some technical fields
2019                 $keep = ['batch', 'notify', 'poll', 'request', 'confirm', 'poco', 'baseurl'];
2020                 foreach ($ret as $key => $val) {
2021                         if (!array_key_exists($key, $contact)) {
2022                                 unset($ret[$key]);
2023                         } elseif (($contact[$key] != '') && ($val === '') && !is_bool($ret[$key]) && !in_array($key, $keep)) {
2024                                 $ret[$key] = $contact[$key];
2025                         } elseif ($ret[$key] != $contact[$key]) {
2026                                 $update = true;
2027                         }
2028                 }
2029
2030                 if (!empty($ret['last-item']) && ($contact['last-item'] < $ret['last-item'])) {
2031                         $update = true;
2032                 } else {
2033                         unset($ret['last-item']);
2034                 }
2035
2036                 if (!empty($ret['photo']) && ($ret['network'] != Protocol::FEED)) {
2037                         self::updateAvatar($id, $ret['photo'], $update);
2038                 }
2039
2040                 if (!$update) {
2041                         self::updateContact($id, $uid, $contact['url'], $ret['url'], ['failed' => false, 'last-update' => $updated, 'success_update' => $updated]);
2042
2043                         if (Contact\Relation::isDiscoverable($ret['url'])) {
2044                                 Worker::add(PRIORITY_LOW, 'ContactDiscovery', $ret['url']);
2045                         }
2046
2047                         // Update the public contact
2048                         if ($uid != 0) {
2049                                 $contact = self::getByURL($ret['url'], false, ['id']);
2050                                 if (!empty($contact['id'])) {
2051                                         self::updateFromProbeArray($contact['id'], $ret);
2052                                 }
2053                         }
2054
2055                         return true;
2056                 }
2057
2058                 $ret['nurl'] = Strings::normaliseLink($ret['url']);
2059                 $ret['updated'] = $updated;
2060                 $ret['failed'] = false;
2061
2062                 // Only fill the pubkey if it had been empty before. We have to prevent identity theft.
2063                 if (empty($pubkey) && !empty($new_pubkey)) {
2064                         $ret['pubkey'] = $new_pubkey;
2065                 }
2066
2067                 if ((!empty($ret['addr']) && ($ret['addr'] != $contact['addr'])) || (!empty($ret['alias']) && ($ret['alias'] != $contact['alias']))) {
2068                         $ret['uri-date'] = DateTimeFormat::utcNow();
2069                 }
2070
2071                 if (($ret['name'] != $contact['name']) || ($ret['nick'] != $contact['nick'])) {
2072                         $ret['name-date'] = $updated;
2073                 }
2074
2075                 if (($uid == 0) || in_array($ret['network'], [Protocol::DFRN, Protocol::DIASPORA, Protocol::ACTIVITYPUB])) {
2076                         $ret['last-update'] = $updated;
2077                         $ret['success_update'] = $updated;
2078                 }
2079
2080                 unset($ret['photo']);
2081
2082                 self::updateContact($id, $uid, $contact['url'], $ret['url'], $ret);
2083
2084                 if (Contact\Relation::isDiscoverable($ret['url'])) {
2085                         Worker::add(PRIORITY_LOW, 'ContactDiscovery', $ret['url']);
2086                 }
2087
2088                 return true;
2089         }
2090
2091         /**
2092          * @param integer $url contact url
2093          * @return integer Contact id
2094          * @throws HTTPException\InternalServerErrorException
2095          * @throws \ImagickException
2096          */
2097         public static function updateFromProbeByURL($url)
2098         {
2099                 $id = self::getIdForURL($url);
2100
2101                 if (empty($id)) {
2102                         return $id;
2103                 }
2104
2105                 self::updateFromProbe($id);
2106
2107                 return $id;
2108         }
2109
2110         /**
2111          * Detects if a given contact array belongs to a legacy DFRN connection
2112          *
2113          * @param array $contact
2114          * @return boolean
2115          */
2116         public static function isLegacyDFRNContact($contact)
2117         {
2118                 // Newer Friendica contacts are connected via AP, then these fields aren't set
2119                 return !empty($contact['dfrn-id']) || !empty($contact['issued-id']);
2120         }
2121
2122         /**
2123          * Detects the communication protocol for a given contact url.
2124          * This is used to detect Friendica contacts that we can communicate via AP.
2125          *
2126          * @param string $url contact url
2127          * @param string $network Network of that contact
2128          * @return string with protocol
2129          */
2130         public static function getProtocol($url, $network)
2131         {
2132                 if ($network != Protocol::DFRN) {
2133                         return $network;
2134                 }
2135
2136                 $apcontact = APContact::getByURL($url);
2137                 if (!empty($apcontact) && !empty($apcontact['generator'])) {
2138                         return Protocol::ACTIVITYPUB;
2139                 } else {
2140                         return $network;
2141                 }
2142         }
2143
2144         /**
2145          * Takes a $uid and a url/handle and adds a new contact
2146          *
2147          * Currently if the contact is DFRN, interactive needs to be true, to redirect to the
2148          * dfrn_request page.
2149          *
2150          * Otherwise this can be used to bulk add StatusNet contacts, Twitter contacts, etc.
2151          *
2152          * Returns an array
2153          * $return['success'] boolean true if successful
2154          * $return['message'] error text if success is false.
2155          *
2156          * Takes a $uid and a url/handle and adds a new contact
2157          *
2158          * @param array  $user        The user the contact should be created for
2159          * @param string $url         The profile URL of the contact
2160          * @param bool   $interactive
2161          * @param string $network
2162          * @return array
2163          * @throws HTTPException\InternalServerErrorException
2164          * @throws HTTPException\NotFoundException
2165          * @throws \ImagickException
2166          */
2167         public static function createFromProbe(array $user, $url, $interactive = false, $network = '')
2168         {
2169                 $result = ['cid' => -1, 'success' => false, 'message' => ''];
2170
2171                 // remove ajax junk, e.g. Twitter
2172                 $url = str_replace('/#!/', '/', $url);
2173
2174                 if (!Network::isUrlAllowed($url)) {
2175                         $result['message'] = DI::l10n()->t('Disallowed profile URL.');
2176                         return $result;
2177                 }
2178
2179                 if (Network::isUrlBlocked($url)) {
2180                         $result['message'] = DI::l10n()->t('Blocked domain');
2181                         return $result;
2182                 }
2183
2184                 if (!$url) {
2185                         $result['message'] = DI::l10n()->t('Connect URL missing.');
2186                         return $result;
2187                 }
2188
2189                 $arr = ['url' => $url, 'contact' => []];
2190
2191                 Hook::callAll('follow', $arr);
2192
2193                 if (empty($arr)) {
2194                         $result['message'] = DI::l10n()->t('The contact could not be added. Please check the relevant network credentials in your Settings -> Social Networks page.');
2195                         return $result;
2196                 }
2197
2198                 if (!empty($arr['contact']['name'])) {
2199                         $ret = $arr['contact'];
2200                 } else {
2201                         $ret = Probe::uri($url, $network, $user['uid']);
2202                 }
2203
2204                 if (($network != '') && ($ret['network'] != $network)) {
2205                         Logger::log('Expected network ' . $network . ' does not match actual network ' . $ret['network']);
2206                         return $result;
2207                 }
2208
2209                 // check if we already have a contact
2210                 // the poll url is more reliable than the profile url, as we may have
2211                 // indirect links or webfinger links
2212
2213                 $condition = ['uid' => $user['uid'], 'poll' => [$ret['poll'], Strings::normaliseLink($ret['poll'])], 'network' => $ret['network'], 'pending' => false];
2214                 $contact = DBA::selectFirst('contact', ['id', 'rel'], $condition);
2215                 if (!DBA::isResult($contact)) {
2216                         $condition = ['uid' => $user['uid'], 'nurl' => Strings::normaliseLink($ret['url']), 'network' => $ret['network'], 'pending' => false];
2217                         $contact = DBA::selectFirst('contact', ['id', 'rel'], $condition);
2218                 }
2219
2220                 $protocol = self::getProtocol($ret['url'], $ret['network']);
2221
2222                 if (($protocol === Protocol::DFRN) && !DBA::isResult($contact)) {
2223                         if ($interactive) {
2224                                 if (strlen(DI::baseUrl()->getUrlPath())) {
2225                                         $myaddr = bin2hex(DI::baseUrl() . '/profile/' . $user['nickname']);
2226                                 } else {
2227                                         $myaddr = bin2hex($user['nickname'] . '@' . DI::baseUrl()->getHostname());
2228                                 }
2229
2230                                 DI::baseUrl()->redirect($ret['request'] . "&addr=$myaddr");
2231
2232                                 // NOTREACHED
2233                         }
2234                 } elseif (DI::config()->get('system', 'dfrn_only') && ($ret['network'] != Protocol::DFRN)) {
2235                         $result['message'] = DI::l10n()->t('This site is not configured to allow communications with other networks.') . EOL;
2236                         $result['message'] .= DI::l10n()->t('No compatible communication protocols or feeds were discovered.') . EOL;
2237                         return $result;
2238                 }
2239
2240                 // This extra param just confuses things, remove it
2241                 if ($protocol === Protocol::DIASPORA) {
2242                         $ret['url'] = str_replace('?absolute=true', '', $ret['url']);
2243                 }
2244
2245                 // do we have enough information?
2246                 if (empty($protocol) || ($protocol == Protocol::PHANTOM) || (empty($ret['url']) && empty($ret['addr']))) {
2247                         $result['message'] .= DI::l10n()->t('The profile address specified does not provide adequate information.') . EOL;
2248                         if (empty($ret['poll'])) {
2249                                 $result['message'] .= DI::l10n()->t('No compatible communication protocols or feeds were discovered.') . EOL;
2250                         }
2251                         if (empty($ret['name'])) {
2252                                 $result['message'] .= DI::l10n()->t('An author or name was not found.') . EOL;
2253                         }
2254                         if (empty($ret['url'])) {
2255                                 $result['message'] .= DI::l10n()->t('No browser URL could be matched to this address.') . EOL;
2256                         }
2257                         if (strpos($ret['url'], '@') !== false) {
2258                                 $result['message'] .= DI::l10n()->t('Unable to match @-style Identity Address with a known protocol or email contact.') . EOL;
2259                                 $result['message'] .= DI::l10n()->t('Use mailto: in front of address to force email check.') . EOL;
2260                         }
2261                         return $result;
2262                 }
2263
2264                 if ($protocol === Protocol::OSTATUS && DI::config()->get('system', 'ostatus_disabled')) {
2265                         $result['message'] .= DI::l10n()->t('The profile address specified belongs to a network which has been disabled on this site.') . EOL;
2266                         $ret['notify'] = '';
2267                 }
2268
2269                 if (!$ret['notify']) {
2270                         $result['message'] .= DI::l10n()->t('Limited profile. This person will be unable to receive direct/personal notifications from you.') . EOL;
2271                 }
2272
2273                 $writeable = ((($protocol === Protocol::OSTATUS) && ($ret['notify'])) ? 1 : 0);
2274
2275                 $subhub = (($protocol === Protocol::OSTATUS) ? true : false);
2276
2277                 $hidden = (($protocol === Protocol::MAIL) ? 1 : 0);
2278
2279                 $pending = false;
2280                 if (($protocol == Protocol::ACTIVITYPUB) && isset($ret['manually-approve'])) {
2281                         $pending = (bool)$ret['manually-approve'];
2282                 }
2283
2284                 if (in_array($protocol, [Protocol::MAIL, Protocol::DIASPORA, Protocol::ACTIVITYPUB])) {
2285                         $writeable = 1;
2286                 }
2287
2288                 if (DBA::isResult($contact)) {
2289                         // update contact
2290                         $new_relation = (($contact['rel'] == self::FOLLOWER) ? self::FRIEND : self::SHARING);
2291
2292                         $fields = ['rel' => $new_relation, 'subhub' => $subhub, 'readonly' => false];
2293                         DBA::update('contact', $fields, ['id' => $contact['id']]);
2294                 } else {
2295                         $new_relation = (in_array($protocol, [Protocol::MAIL]) ? self::FRIEND : self::SHARING);
2296
2297                         // create contact record
2298                         self::insert([
2299                                 'uid'     => $user['uid'],
2300                                 'created' => DateTimeFormat::utcNow(),
2301                                 'url'     => $ret['url'],
2302                                 'nurl'    => Strings::normaliseLink($ret['url']),
2303                                 'addr'    => $ret['addr'],
2304                                 'alias'   => $ret['alias'],
2305                                 'batch'   => $ret['batch'],
2306                                 'notify'  => $ret['notify'],
2307                                 'poll'    => $ret['poll'],
2308                                 'poco'    => $ret['poco'],
2309                                 'name'    => $ret['name'],
2310                                 'nick'    => $ret['nick'],
2311                                 'network' => $ret['network'],
2312                                 'baseurl' => $ret['baseurl'],
2313                                 'gsid'    => $ret['gsid'] ?? null,
2314                                 'protocol' => $protocol,
2315                                 'pubkey'  => $ret['pubkey'],
2316                                 'rel'     => $new_relation,
2317                                 'priority'=> $ret['priority'],
2318                                 'writable'=> $writeable,
2319                                 'hidden'  => $hidden,
2320                                 'blocked' => 0,
2321                                 'readonly'=> 0,
2322                                 'pending' => $pending,
2323                                 'subhub'  => $subhub
2324                         ]);
2325                 }
2326
2327                 $contact = DBA::selectFirst('contact', [], ['url' => $ret['url'], 'network' => $ret['network'], 'uid' => $user['uid']]);
2328                 if (!DBA::isResult($contact)) {
2329                         $result['message'] .= DI::l10n()->t('Unable to retrieve contact information.') . EOL;
2330                         return $result;
2331                 }
2332
2333                 $contact_id = $contact['id'];
2334                 $result['cid'] = $contact_id;
2335
2336                 Group::addMember(User::getDefaultGroup($user['uid'], $contact["network"]), $contact_id);
2337
2338                 // Update the avatar
2339                 self::updateAvatar($contact_id, $ret['photo']);
2340
2341                 // pull feed and consume it, which should subscribe to the hub.
2342                 if ($contact['network'] == Protocol::OSTATUS) {
2343                         Worker::add(PRIORITY_HIGH, 'OnePoll', $contact_id, 'force');
2344                 } else {
2345                         Worker::add(PRIORITY_HIGH, 'UpdateContact', $contact_id);
2346                 }
2347
2348                 $owner = User::getOwnerDataById($user['uid']);
2349
2350                 if (DBA::isResult($owner)) {
2351                         if (in_array($protocol, [Protocol::OSTATUS, Protocol::DFRN])) {
2352                                 // create a follow slap
2353                                 $item = [];
2354                                 $item['verb'] = Activity::FOLLOW;
2355                                 $item['gravity'] = GRAVITY_ACTIVITY;
2356                                 $item['follow'] = $contact["url"];
2357                                 $item['body'] = '';
2358                                 $item['title'] = '';
2359                                 $item['guid'] = '';
2360                                 $item['uri-id'] = 0;
2361
2362                                 $slap = OStatus::salmon($item, $owner);
2363
2364                                 if (!empty($contact['notify'])) {
2365                                         Salmon::slapper($owner, $contact['notify'], $slap);
2366                                 }
2367                         } elseif ($protocol == Protocol::DIASPORA) {
2368                                 $ret = Diaspora::sendShare($owner, $contact);
2369                                 Logger::log('share returns: ' . $ret);
2370                         } elseif ($protocol == Protocol::ACTIVITYPUB) {
2371                                 $activity_id = ActivityPub\Transmitter::activityIDFromContact($contact_id);
2372                                 if (empty($activity_id)) {
2373                                         // This really should never happen
2374                                         return false;
2375                                 }
2376
2377                                 $ret = ActivityPub\Transmitter::sendActivity('Follow', $contact['url'], $user['uid'], $activity_id);
2378                                 Logger::log('Follow returns: ' . $ret);
2379                         }
2380                 }
2381
2382                 $result['success'] = true;
2383                 return $result;
2384         }
2385
2386         /**
2387          * Updated contact's SSL policy
2388          *
2389          * @param array  $contact    Contact array
2390          * @param string $new_policy New policy, valid: self,full
2391          *
2392          * @return array Contact array with updated values
2393          * @throws \Exception
2394          */
2395         public static function updateSslPolicy(array $contact, $new_policy)
2396         {
2397                 $ssl_changed = false;
2398                 if ((intval($new_policy) == BaseURL::SSL_POLICY_SELFSIGN || $new_policy === 'self') && strstr($contact['url'], 'https:')) {
2399                         $ssl_changed = true;
2400                         $contact['url']     =   str_replace('https:', 'http:', $contact['url']);
2401                         $contact['request'] =   str_replace('https:', 'http:', $contact['request']);
2402                         $contact['notify']  =   str_replace('https:', 'http:', $contact['notify']);
2403                         $contact['poll']    =   str_replace('https:', 'http:', $contact['poll']);
2404                         $contact['confirm'] =   str_replace('https:', 'http:', $contact['confirm']);
2405                         $contact['poco']    =   str_replace('https:', 'http:', $contact['poco']);
2406                 }
2407
2408                 if ((intval($new_policy) == BaseURL::SSL_POLICY_FULL || $new_policy === 'full') && strstr($contact['url'], 'http:')) {
2409                         $ssl_changed = true;
2410                         $contact['url']     =   str_replace('http:', 'https:', $contact['url']);
2411                         $contact['request'] =   str_replace('http:', 'https:', $contact['request']);
2412                         $contact['notify']  =   str_replace('http:', 'https:', $contact['notify']);
2413                         $contact['poll']    =   str_replace('http:', 'https:', $contact['poll']);
2414                         $contact['confirm'] =   str_replace('http:', 'https:', $contact['confirm']);
2415                         $contact['poco']    =   str_replace('http:', 'https:', $contact['poco']);
2416                 }
2417
2418                 if ($ssl_changed) {
2419                         $fields = ['url' => $contact['url'], 'request' => $contact['request'],
2420                                         'notify' => $contact['notify'], 'poll' => $contact['poll'],
2421                                         'confirm' => $contact['confirm'], 'poco' => $contact['poco']];
2422                         DBA::update('contact', $fields, ['id' => $contact['id']]);
2423                 }
2424
2425                 return $contact;
2426         }
2427
2428         /**
2429          * Follow a contact
2430          *
2431          * @param int $cid Public contact id
2432          * @param int $uid  User ID
2433          *
2434          * @return bool "true" if following had been successful
2435          */
2436         public static function follow(int $cid, int $uid)
2437         {
2438                 $user = User::getById($uid);
2439                 if (empty($user)) {
2440                         return false;
2441                 }
2442
2443                 $contact = self::getById($cid, ['url']);
2444
2445                 $result = self::createFromProbe($user, $contact['url'], false);
2446
2447                 return $result['cid'];
2448         }
2449
2450         /**
2451          * Unfollow a contact
2452          *
2453          * @param int $cid Public contact id
2454          * @param int $uid  User ID
2455          *
2456          * @return bool "true" if unfollowing had been successful
2457          */
2458         public static function unfollow(int $cid, int $uid)
2459         {
2460                 $cdata = self::getPublicAndUserContacID($cid, $uid);
2461                 if (empty($cdata['user'])) {
2462                         return false;
2463                 }
2464
2465                 $contact = self::getById($cdata['user']);
2466
2467                 self::removeSharer([], $contact);
2468
2469                 return true;
2470         }
2471
2472         /**
2473          * @param array  $importer Owner (local user) data
2474          * @param array  $contact  Existing owner-specific contact data we want to expand the relationship with. Optional.
2475          * @param array  $datarray An item-like array with at least the 'author-id' and 'author-url' keys for the contact. Mandatory.
2476          * @param bool   $sharing  True: Contact is now sharing with Owner; False: Contact is now following Owner (default)
2477          * @param string $note     Introduction additional message
2478          * @return bool|null True: follow request is accepted; False: relationship is rejected; Null: relationship is pending
2479          * @throws HTTPException\InternalServerErrorException
2480          * @throws \ImagickException
2481          */
2482         public static function addRelationship(array $importer, array $contact, array $datarray, $sharing = false, $note = '')
2483         {
2484                 // Should always be set
2485                 if (empty($datarray['author-id'])) {
2486                         return false;
2487                 }
2488
2489                 $fields = ['url', 'name', 'nick', 'avatar', 'photo', 'network', 'blocked'];
2490                 $pub_contact = DBA::selectFirst('contact', $fields, ['id' => $datarray['author-id']]);
2491                 if (!DBA::isResult($pub_contact)) {
2492                         // Should never happen
2493                         return false;
2494                 }
2495
2496                 // Contact is blocked at node-level
2497                 if (self::isBlocked($datarray['author-id'])) {
2498                         return false;
2499                 }
2500
2501                 $url = ($datarray['author-link'] ?? '') ?: $pub_contact['url'];
2502                 $name = $pub_contact['name'];
2503                 $photo = ($pub_contact['avatar'] ?? '') ?: $pub_contact["photo"];
2504                 $nick = $pub_contact['nick'];
2505                 $network = $pub_contact['network'];
2506
2507                 // Ensure that we don't create a new contact when there already is one
2508                 $cid = self::getIdForURL($url, $importer['uid']);
2509                 if (!empty($cid)) {
2510                         $contact = DBA::selectFirst('contact', [], ['id' => $cid]);
2511                 }
2512
2513                 if (!empty($contact)) {
2514                         if (!empty($contact['pending'])) {
2515                                 Logger::info('Pending contact request already exists.', ['url' => $url, 'uid' => $importer['uid']]);
2516                                 return null;
2517                         }
2518
2519                         // Contact is blocked at user-level
2520                         if (!empty($contact['id']) && !empty($importer['id']) &&
2521                                 Contact\User::isBlocked($contact['id'], $importer['id'])) {
2522                                 return false;
2523                         }
2524
2525                         // Make sure that the existing contact isn't archived
2526                         self::unmarkForArchival($contact);
2527
2528                         if (($contact['rel'] == self::SHARING)
2529                                 || ($sharing && $contact['rel'] == self::FOLLOWER)) {
2530                                 DBA::update('contact', ['rel' => self::FRIEND, 'writable' => true, 'pending' => false],
2531                                                 ['id' => $contact['id'], 'uid' => $importer['uid']]);
2532                         }
2533
2534                         // Ensure to always have the correct network type, independent from the connection request method
2535                         self::updateFromProbe($contact['id']);
2536
2537                         return true;
2538                 } else {
2539                         // send email notification to owner?
2540                         if (DBA::exists('contact', ['nurl' => Strings::normaliseLink($url), 'uid' => $importer['uid'], 'pending' => true])) {
2541                                 Logger::log('ignoring duplicated connection request from pending contact ' . $url);
2542                                 return null;
2543                         }
2544
2545                         // create contact record
2546                         DBA::insert('contact', [
2547                                 'uid'      => $importer['uid'],
2548                                 'created'  => DateTimeFormat::utcNow(),
2549                                 'url'      => $url,
2550                                 'nurl'     => Strings::normaliseLink($url),
2551                                 'name'     => $name,
2552                                 'nick'     => $nick,
2553                                 'network'  => $network,
2554                                 'rel'      => self::FOLLOWER,
2555                                 'blocked'  => 0,
2556                                 'readonly' => 0,
2557                                 'pending'  => 1,
2558                                 'writable' => 1,
2559                         ]);
2560
2561                         $contact_id = DBA::lastInsertId();
2562
2563                         // Ensure to always have the correct network type, independent from the connection request method
2564                         self::updateFromProbe($contact_id);
2565
2566                         self::updateAvatar($contact_id, $photo, true);
2567
2568                         $contact_record = DBA::selectFirst('contact', ['id', 'network', 'name', 'url', 'photo'], ['id' => $contact_id]);
2569
2570                         /// @TODO Encapsulate this into a function/method
2571                         $fields = ['uid', 'username', 'email', 'page-flags', 'notify-flags', 'language'];
2572                         $user = DBA::selectFirst('user', $fields, ['uid' => $importer['uid']]);
2573                         if (DBA::isResult($user) && !in_array($user['page-flags'], [User::PAGE_FLAGS_SOAPBOX, User::PAGE_FLAGS_FREELOVE, User::PAGE_FLAGS_COMMUNITY])) {
2574                                 // create notification
2575                                 $hash = Strings::getRandomHex();
2576
2577                                 if (is_array($contact_record)) {
2578                                         DBA::insert('intro', ['uid' => $importer['uid'], 'contact-id' => $contact_record['id'],
2579                                                                 'blocked' => false, 'knowyou' => false, 'note' => $note,
2580                                                                 'hash' => $hash, 'datetime' => DateTimeFormat::utcNow()]);
2581                                 }
2582
2583                                 Group::addMember(User::getDefaultGroup($importer['uid'], $contact_record["network"]), $contact_record['id']);
2584
2585                                 if (($user['notify-flags'] & Notification\Type::INTRO) &&
2586                                         in_array($user['page-flags'], [User::PAGE_FLAGS_NORMAL])) {
2587
2588                                         notification([
2589                                                 'type'  => Notification\Type::INTRO,
2590                                                 'otype' => Notification\ObjectType::INTRO,
2591                                                 'verb'  => ($sharing ? Activity::FRIEND : Activity::FOLLOW),
2592                                                 'uid'   => $user['uid'],
2593                                                 'cid'   => $contact_record['id'],
2594                                                 'link'  => DI::baseUrl() . '/notifications/intros',
2595                                         ]);
2596                                 }
2597                         } elseif (DBA::isResult($user) && in_array($user['page-flags'], [User::PAGE_FLAGS_SOAPBOX, User::PAGE_FLAGS_FREELOVE, User::PAGE_FLAGS_COMMUNITY])) {
2598                                 if (($user['page-flags'] == User::PAGE_FLAGS_FREELOVE) && ($network != Protocol::DIASPORA)) {
2599                                         self::createFromProbe($importer, $url, false, $network);
2600                                 }
2601
2602                                 $condition = ['uid' => $importer['uid'], 'url' => $url, 'pending' => true];
2603                                 $fields = ['pending' => false];
2604                                 if ($user['page-flags'] == User::PAGE_FLAGS_FREELOVE) {
2605                                         $fields['rel'] = self::FRIEND;
2606                                 }
2607
2608                                 DBA::update('contact', $fields, $condition);
2609
2610                                 return true;
2611                         }
2612                 }
2613
2614                 return null;
2615         }
2616
2617         public static function removeFollower($importer, $contact)
2618         {
2619                 if (($contact['rel'] == self::FRIEND) || ($contact['rel'] == self::SHARING)) {
2620                         DBA::update('contact', ['rel' => self::SHARING], ['id' => $contact['id']]);
2621                 } else {
2622                         self::remove($contact['id']);
2623                 }
2624         }
2625
2626         public static function removeSharer($importer, $contact)
2627         {
2628                 if (($contact['rel'] == self::FRIEND) || ($contact['rel'] == self::FOLLOWER)) {
2629                         DBA::update('contact', ['rel' => self::FOLLOWER], ['id' => $contact['id']]);
2630                 } else {
2631                         self::remove($contact['id']);
2632                 }
2633         }
2634
2635         /**
2636          * Create a birthday event.
2637          *
2638          * Update the year and the birthday.
2639          */
2640         public static function updateBirthdays()
2641         {
2642                 $condition = [
2643                         '`bd` > ?
2644                         AND (`contact`.`rel` = ? OR `contact`.`rel` = ?)
2645                         AND NOT `contact`.`pending`
2646                         AND NOT `contact`.`hidden`
2647                         AND NOT `contact`.`blocked`
2648                         AND NOT `contact`.`archive`
2649                         AND NOT `contact`.`deleted`',
2650                         DBA::NULL_DATE,
2651                         self::SHARING,
2652                         self::FRIEND
2653                 ];
2654
2655                 $contacts = DBA::select('contact', ['id', 'uid', 'name', 'url', 'bd'], $condition);
2656
2657                 while ($contact = DBA::fetch($contacts)) {
2658                         Logger::log('update_contact_birthday: ' . $contact['bd']);
2659
2660                         $nextbd = DateTimeFormat::utcNow('Y') . substr($contact['bd'], 4);
2661
2662                         if (Event::createBirthday($contact, $nextbd)) {
2663                                 // update bdyear
2664                                 DBA::update(
2665                                         'contact',
2666                                         ['bdyear' => substr($nextbd, 0, 4), 'bd' => $nextbd],
2667                                         ['id' => $contact['id']]
2668                                 );
2669                         }
2670                 }
2671                 DBA::close($contacts);
2672         }
2673
2674         /**
2675          * Remove the unavailable contact ids from the provided list
2676          *
2677          * @param array $contact_ids Contact id list
2678          * @return array
2679          * @throws \Exception
2680          */
2681         public static function pruneUnavailable(array $contact_ids)
2682         {
2683                 if (empty($contact_ids)) {
2684                         return [];
2685                 }
2686
2687                 $contacts = self::selectToArray(['id'], [
2688                         'id'      => $contact_ids,
2689                         'blocked' => false,
2690                         'pending' => false,
2691                         'archive' => false,
2692                 ]);
2693
2694                 return array_column($contacts, 'id');
2695         }
2696
2697         /**
2698          * Returns a magic link to authenticate remote visitors
2699          *
2700          * @todo  check if the return is either a fully qualified URL or a relative path to Friendica basedir
2701          *
2702          * @param string $contact_url The address of the target contact profile
2703          * @param string $url         An url that we will be redirected to after the authentication
2704          *
2705          * @return string with "redir" link
2706          * @throws HTTPException\InternalServerErrorException
2707          * @throws \ImagickException
2708          */
2709         public static function magicLink($contact_url, $url = '')
2710         {
2711                 if (!Session::isAuthenticated()) {
2712                         return $url ?: $contact_url; // Equivalent to: ($url != '') ? $url : $contact_url;
2713                 }
2714
2715                 $contact = self::getByURL($contact_url, false);
2716                 if (empty($contact)) {
2717                         return $url ?: $contact_url; // Equivalent to: ($url != '') ? $url : $contact_url;
2718                 }
2719
2720                 // Prevents endless loop in case only a non-public contact exists for the contact URL
2721                 unset($contact['uid']);
2722
2723                 return self::magicLinkByContact($contact, $url ?: $contact_url);
2724         }
2725
2726         /**
2727          * Returns a magic link to authenticate remote visitors
2728          *
2729          * @param integer $cid The contact id of the target contact profile
2730          * @param string  $url An url that we will be redirected to after the authentication
2731          *
2732          * @return string with "redir" link
2733          * @throws HTTPException\InternalServerErrorException
2734          * @throws \ImagickException
2735          */
2736         public static function magicLinkById($cid, $url = '')
2737         {
2738                 $contact = DBA::selectFirst('contact', ['id', 'network', 'url', 'uid'], ['id' => $cid]);
2739
2740                 return self::magicLinkByContact($contact, $url);
2741         }
2742
2743         /**
2744          * Returns a magic link to authenticate remote visitors
2745          *
2746          * @param array  $contact The contact array with "uid", "network" and "url"
2747          * @param string $url     An url that we will be redirected to after the authentication
2748          *
2749          * @return string with "redir" link
2750          * @throws HTTPException\InternalServerErrorException
2751          * @throws \ImagickException
2752          */
2753         public static function magicLinkByContact($contact, $url = '')
2754         {
2755                 $destination = $url ?: $contact['url']; // Equivalent to ($url != '') ? $url : $contact['url'];
2756
2757                 if (!Session::isAuthenticated()) {
2758                         return $destination;
2759                 }
2760
2761                 // Only redirections to the same host do make sense
2762                 if (($url != '') && (parse_url($url, PHP_URL_HOST) != parse_url($contact['url'], PHP_URL_HOST))) {
2763                         return $url;
2764                 }
2765
2766                 if (DI::pConfig()->get(local_user(), 'system', 'stay_local') && ($url == '')) {
2767                         return 'contact/' . $contact['id'] . '/conversations';
2768                 }
2769
2770                 if (!empty($contact['network']) && $contact['network'] != Protocol::DFRN) {
2771                         return $destination;
2772                 }
2773
2774                 if (empty($contact['id'])) {
2775                         return $destination;
2776                 }
2777
2778                 $redirect = 'redir/' . $contact['id'];
2779
2780                 if (($url != '') && !Strings::compareLink($contact['url'], $url)) {
2781                         $redirect .= '?url=' . $url;
2782                 }
2783
2784                 return $redirect;
2785         }
2786
2787         /**
2788          * Is the contact a forum?
2789          *
2790          * @param integer $contactid ID of the contact
2791          *
2792          * @return boolean "true" if it is a forum
2793          */
2794         public static function isForum($contactid)
2795         {
2796                 $fields = ['forum', 'prv'];
2797                 $condition = ['id' => $contactid];
2798                 $contact = DBA::selectFirst('contact', $fields, $condition);
2799                 if (!DBA::isResult($contact)) {
2800                         return false;
2801                 }
2802
2803                 // Is it a forum?
2804                 return ($contact['forum'] || $contact['prv']);
2805         }
2806
2807         /**
2808          * Can the remote contact receive private messages?
2809          *
2810          * @param array $contact
2811          * @return bool
2812          */
2813         public static function canReceivePrivateMessages(array $contact)
2814         {
2815                 $protocol = $contact['network'] ?? $contact['protocol'] ?? Protocol::PHANTOM;
2816                 $self = $contact['self'] ?? false;
2817
2818                 return in_array($protocol, [Protocol::DFRN, Protocol::DIASPORA, Protocol::ACTIVITYPUB]) && !$self;
2819         }
2820
2821         /**
2822          * Search contact table by nick or name
2823          *
2824          * @param string $search Name or nick
2825          * @param string $mode   Search mode (e.g. "community")
2826          * @param int    $uid    User ID
2827          *
2828          * @return array with search results
2829          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2830          */
2831         public static function searchByName(string $search, string $mode = '', int $uid = 0)
2832         {
2833                 if (empty($search)) {
2834                         return [];
2835                 }
2836
2837                 // check supported networks
2838                 if (DI::config()->get('system', 'diaspora_enabled')) {
2839                         $diaspora = Protocol::DIASPORA;
2840                 } else {
2841                         $diaspora = Protocol::DFRN;
2842                 }
2843
2844                 if (!DI::config()->get('system', 'ostatus_disabled')) {
2845                         $ostatus = Protocol::OSTATUS;
2846                 } else {
2847                         $ostatus = Protocol::DFRN;
2848                 }
2849
2850                 // check if we search only communities or every contact
2851                 if ($mode === 'community') {
2852                         $extra_sql = sprintf(' AND `contact-type` = %d', self::TYPE_COMMUNITY);
2853                 } else {
2854                         $extra_sql = '';
2855                 }
2856
2857                 $search .= '%';
2858
2859                 $results = DBA::p("SELECT * FROM `contact`
2860                         WHERE NOT `unsearchable` AND `network` IN (?, ?, ?, ?) AND
2861                                 NOT `failed` AND `uid` = ? AND
2862                                 (`addr` LIKE ? OR `name` LIKE ? OR `nick` LIKE ?) $extra_sql
2863                                 ORDER BY `nurl` DESC LIMIT 1000",
2864                         Protocol::DFRN, Protocol::ACTIVITYPUB, $ostatus, $diaspora, $uid, $search, $search, $search
2865                 );
2866
2867                 $contacts = DBA::toArray($results);
2868                 return $contacts;
2869         }
2870
2871         /**
2872          * Add public contacts from an array
2873          *
2874          * @param array $urls
2875          * @return array result "count", "added" and "updated"
2876          */
2877         public static function addByUrls(array $urls)
2878         {
2879                 $added = 0;
2880                 $updated = 0;
2881                 $unchanged = 0;
2882                 $count = 0;
2883
2884                 foreach ($urls as $url) {
2885                         if (empty($url) || !is_string($url)) {
2886                                 continue;
2887                         }
2888                         $contact = self::getByURL($url, false, ['id', 'updated']);
2889                         if (empty($contact['id'])) {
2890                                 Worker::add(PRIORITY_LOW, 'AddContact', 0, $url);
2891                                 ++$added;
2892                         } elseif ($contact['updated'] < DateTimeFormat::utc('now -7 days')) {
2893                                 Worker::add(PRIORITY_LOW, 'UpdateContact', $contact['id']);
2894                                 ++$updated;
2895                         } else {
2896                                 ++$unchanged;
2897                         }
2898                         ++$count;
2899                 }
2900
2901                 return ['count' => $count, 'added' => $added, 'updated' => $updated, 'unchanged' => $unchanged];
2902         }
2903
2904         /**
2905          * Returns a random, global contact array of the current node
2906          *
2907          * @return array The profile array
2908          * @throws Exception
2909          */
2910         public static function getRandomContact()
2911         {
2912                 $contact = DBA::selectFirst('contact', ['id', 'network', 'url', 'uid'], [
2913                         "`uid` = ? AND `network` = ? AND NOT `failed` AND `last-item` > ?",
2914                         0, Protocol::DFRN, DateTimeFormat::utc('now - 1 month'),
2915                 ], ['order' => ['RAND()']]);
2916
2917                 if (DBA::isResult($contact)) {
2918                         return $contact;
2919                 }
2920
2921                 return [];
2922         }
2923 }