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 $update_avatar Force the avatar update
 626          * @return bool   "true" if updated
 627          * @throws HTTPException\InternalServerErrorException
 628          */
 629         public static function updateSelfFromUserID($uid, $update_avatar = false)
 630         {
 631                 $fields = ['id', 'name', 'nick', 'location', 'about', 'keywords', 'avatar', 'prvkey', 'pubkey',
 632                         'xmpp', 'contact-type', 'forum', 'prv', 'avatar-date', 'url', 'nurl', 'unsearchable',
 633                         'photo', 'thumb', 'micro', 'addr', 'request', 'notify', 'poll', 'confirm', 'poco'];
 634                 $self = DBA::selectFirst('contact', $fields, ['uid' => $uid, 'self' => true]);
 635                 if (!DBA::isResult($self)) {
 636                         return false;
 637                 }
 638
 639                 $fields = ['nickname', 'page-flags', 'account-type', 'prvkey', 'pubkey'];
 640                 $user = DBA::selectFirst('user', $fields, ['uid' => $uid, 'account_expired' => false]);
 641                 if (!DBA::isResult($user)) {
 642                         return false;
 643                 }
 644
 645                 $fields = ['name', 'photo', 'thumb', 'about', 'address', 'locality', 'region',
 646                         'country-name', 'pub_keywords', 'xmpp', 'net-publish'];
 647                 $profile = DBA::selectFirst('profile', $fields, ['uid' => $uid]);
 648                 if (!DBA::isResult($profile)) {
 649                         return false;
 650                 }
 651
 652                 $file_suffix = 'jpg';
 653
 654                 $fields = ['name' => $profile['name'], 'nick' => $user['nickname'],
 655                         'avatar-date' => $self['avatar-date'], 'location' => Profile::formatLocation($profile),
 656                         'about' => $profile['about'], 'keywords' => $profile['pub_keywords'],
 657                         'contact-type' => $user['account-type'], 'prvkey' => $user['prvkey'],
 658                         'pubkey' => $user['pubkey'], 'xmpp' => $profile['xmpp']];
 659
 660                 // it seems as if ported accounts can have wrong values, so we make sure that now everything is fine.
 661                 $fields['url'] = DI::baseUrl() . '/profile/' . $user['nickname'];
 662                 $fields['nurl'] = Strings::normaliseLink($fields['url']);
 663                 $fields['addr'] = $user['nickname'] . '@' . substr(DI::baseUrl(), strpos(DI::baseUrl(), '://') + 3);
 664                 $fields['request'] = DI::baseUrl() . '/dfrn_request/' . $user['nickname'];
 665                 $fields['notify'] = DI::baseUrl() . '/dfrn_notify/' . $user['nickname'];
 666                 $fields['poll'] = DI::baseUrl() . '/dfrn_poll/'. $user['nickname'];
 667                 $fields['confirm'] = DI::baseUrl() . '/dfrn_confirm/' . $user['nickname'];
 668                 $fields['poco'] = DI::baseUrl() . '/poco/' . $user['nickname'];
 669
 670                 $avatar = Photo::selectFirst(['resource-id', 'type'], ['uid' => $uid, 'profile' => true]);
 671                 if (DBA::isResult($avatar)) {
 672                         if ($update_avatar) {
 673                                 $fields['avatar-date'] = DateTimeFormat::utcNow();
 674                         }
 675
 676                         // Creating the path to the avatar, beginning with the file suffix
 677                         $types = Images::supportedTypes();
 678                         if (isset($types[$avatar['type']])) {
 679                                 $file_suffix = $types[$avatar['type']];
 680                         }
 681
 682                         // We are adding a timestamp value so that other systems won't use cached content
 683                         $timestamp = strtotime($fields['avatar-date']);
 684
 685                         $prefix = DI::baseUrl() . '/photo/' .$avatar['resource-id'] . '-';
 686                         $suffix = '.' . $file_suffix . '?ts=' . $timestamp;
 687
 688                         $fields['photo'] = $prefix . '4' . $suffix;
 689                         $fields['thumb'] = $prefix . '5' . $suffix;
 690                         $fields['micro'] = $prefix . '6' . $suffix;
 691                 } else {
 692                         // We hadn't found a photo entry, so we use the default avatar
 693                         $fields['photo'] = self::getDefaultAvatar($fields, Proxy::SIZE_SMALL);
 694                         $fields['thumb'] = self::getDefaultAvatar($fields, Proxy::SIZE_THUMB);
 695                         $fields['micro'] = self::getDefaultAvatar($fields, Proxy::SIZE_MICRO);
 696                 }
 697
 698                 $fields['avatar'] = DI::baseUrl() . '/photo/profile/' .$uid . '.' . $file_suffix;
 699                 $fields['forum'] = $user['page-flags'] == User::PAGE_FLAGS_COMMUNITY;
 700                 $fields['prv'] = $user['page-flags'] == User::PAGE_FLAGS_PRVGROUP;
 701                 $fields['unsearchable'] = !$profile['net-publish'];
 702
 703                 $update = false;
 704
 705                 foreach ($fields as $field => $content) {
 706                         if ($self[$field] != $content) {
 707                                 $update = true;
 708                         }
 709                 }
 710
 711                 if ($update) {
 712                         if ($fields['name'] != $self['name']) {
 713                                 $fields['name-date'] = DateTimeFormat::utcNow();
 714                         }
 715                         $fields['updated'] = DateTimeFormat::utcNow();
 716                         DBA::update('contact', $fields, ['id' => $self['id']]);
 717
 718                         // Update the public contact as well
 719                         $fields['prvkey'] = null;
 720                         $fields['self']   = false;
 721                         DBA::update('contact', $fields, ['uid' => 0, 'nurl' => $self['nurl']]);
 722
 723                         // Update the profile
 724                         $fields = ['photo' => DI::baseUrl() . '/photo/profile/' .$uid . '.' . $file_suffix,
 725                                 'thumb' => DI::baseUrl() . '/photo/avatar/' . $uid .'.' . $file_suffix];
 726                         DBA::update('profile', $fields, ['uid' => $uid]);
 727                 }
 728
 729                 return $update;
 730         }
 731
 732         /**
 733          * Marks a contact for removal
 734          *
 735          * @param int $id contact id
 736          * @return null
 737          * @throws HTTPException\InternalServerErrorException
 738          */
 739         public static function remove($id)
 740         {
 741                 // We want just to make sure that we don't delete our "self" contact
 742                 $contact = DBA::selectFirst('contact', ['uid'], ['id' => $id, 'self' => false]);
 743                 if (!DBA::isResult($contact)) {
 744                         return;
 745                 }
 746
 747                 // Archive the contact
 748                 DBA::update('contact', ['archive' => true, 'network' => Protocol::PHANTOM, 'deleted' => true], ['id' => $id]);
 749
 750                 // Delete it in the background
 751                 Worker::add(PRIORITY_MEDIUM, 'RemoveContact', $id);
 752         }
 753
 754         /**
 755          * Sends an unfriend message. Does not remove the contact
 756          *
 757          * @param array   $user     User unfriending
 758          * @param array   $contact  Contact unfriended
 759          * @param boolean $dissolve Remove the contact on the remote side
 760          * @return void
 761          * @throws HTTPException\InternalServerErrorException
 762          * @throws \ImagickException
 763          */
 764         public static function terminateFriendship(array $user, array $contact, $dissolve = false)
 765         {
 766                 if (empty($contact['network'])) {
 767                         return;
 768                 }
 769
 770                 $protocol = $contact['network'];
 771                 if (($protocol == Protocol::DFRN) && !self::isLegacyDFRNContact($contact)) {
 772                         $protocol = Protocol::ACTIVITYPUB;
 773                 }
 774
 775                 if (($protocol == Protocol::DFRN) && $dissolve) {
 776                         DFRN::deliver($user, $contact, 'placeholder', true);
 777                 } elseif (in_array($protocol, [Protocol::OSTATUS, Protocol::DFRN])) {
 778                         // create an unfollow slap
 779                         $item = [];
 780                         $item['verb'] = Activity::O_UNFOLLOW;
 781                         $item['gravity'] = GRAVITY_ACTIVITY;
 782                         $item['follow'] = $contact["url"];
 783                         $item['body'] = '';
 784                         $item['title'] = '';
 785                         $item['guid'] = '';
 786                         $item['uri-id'] = 0;
 787                         $slap = OStatus::salmon($item, $user);
 788
 789                         if (!empty($contact['notify'])) {
 790                                 Salmon::slapper($user, $contact['notify'], $slap);
 791                         }
 792                 } elseif ($protocol == Protocol::DIASPORA) {
 793                         Diaspora::sendUnshare($user, $contact);
 794                 } elseif ($protocol == Protocol::ACTIVITYPUB) {
 795                         ActivityPub\Transmitter::sendContactUndo($contact['url'], $contact['id'], $user['uid']);
 796
 797                         if ($dissolve) {
 798                                 ActivityPub\Transmitter::sendContactReject($contact['url'], $contact['hub-verify'], $user['uid']);
 799                         }
 800                 }
 801         }
 802
 803         /**
 804          * Marks a contact for archival after a communication issue delay
 805          *
 806          * Contact has refused to recognise us as a friend. We will start a countdown.
 807          * If they still don't recognise us in 32 days, the relationship is over,
 808          * and we won't waste any more time trying to communicate with them.
 809          * This provides for the possibility that their database is temporarily messed
 810          * up or some other transient event and that there's a possibility we could recover from it.
 811          *
 812          * @param array $contact contact to mark for archival
 813          * @return null
 814          * @throws HTTPException\InternalServerErrorException
 815          */
 816         public static function markForArchival(array $contact)
 817         {
 818                 if (!isset($contact['url']) && !empty($contact['id'])) {
 819                         $fields = ['id', 'url', 'archive', 'self', 'term-date'];
 820                         $contact = DBA::selectFirst('contact', $fields, ['id' => $contact['id']]);
 821                         if (!DBA::isResult($contact)) {
 822                                 return;
 823                         }
 824                 } elseif (!isset($contact['url'])) {
 825                         Logger::info('Empty contact', ['contact' => $contact, 'callstack' => System::callstack(20)]);
 826                 }
 827
 828                 Logger::info('Contact is marked for archival', ['id' => $contact['id'], 'term-date' => $contact['term-date']]);
 829
 830                 // Contact already archived or "self" contact? => nothing to do
 831                 if ($contact['archive'] || $contact['self']) {
 832                         return;
 833                 }
 834
 835                 if ($contact['term-date'] <= DBA::NULL_DATETIME) {
 836                         DBA::update('contact', ['term-date' => DateTimeFormat::utcNow()], ['id' => $contact['id']]);
 837                         DBA::update('contact', ['term-date' => DateTimeFormat::utcNow()], ['`nurl` = ? AND `term-date` <= ? AND NOT `self`', Strings::normaliseLink($contact['url']), DBA::NULL_DATETIME]);
 838                 } else {
 839                         /* @todo
 840                          * We really should send a notification to the owner after 2-3 weeks
 841                          * so they won't be surprised when the contact vanishes and can take
 842                          * remedial action if this was a serious mistake or glitch
 843                          */
 844
 845                         /// @todo Check for contact vitality via probing
 846                         $archival_days = DI::config()->get('system', 'archival_days', 32);
 847
 848                         $expiry = $contact['term-date'] . ' + ' . $archival_days . ' days ';
 849                         if (DateTimeFormat::utcNow() > DateTimeFormat::utc($expiry)) {
 850                                 /* Relationship is really truly dead. archive them rather than
 851                                  * delete, though if the owner tries to unarchive them we'll start
 852                                  * the whole process over again.
 853                                  */
 854                                 DBA::update('contact', ['archive' => true], ['id' => $contact['id']]);
 855                                 DBA::update('contact', ['archive' => true], ['nurl' => Strings::normaliseLink($contact['url']), 'self' => false]);
 856                         }
 857                 }
 858         }
 859
 860         /**
 861          * Cancels the archival countdown
 862          *
 863          * @see   Contact::markForArchival()
 864          *
 865          * @param array $contact contact to be unmarked for archival
 866          * @return null
 867          * @throws \Exception
 868          */
 869         public static function unmarkForArchival(array $contact)
 870         {
 871                 // Always unarchive the relay contact entry
 872                 if (!empty($contact['batch']) && !empty($contact['term-date']) && ($contact['term-date'] > DBA::NULL_DATETIME)) {
 873                         $fields = ['failed' => false, 'term-date' => DBA::NULL_DATETIME, 'archive' => false];
 874                         $condition = ['uid' => 0, 'network' => Protocol::FEDERATED, 'batch' => $contact['batch'], 'contact-type' => self::TYPE_RELAY];
 875                         if (!DBA::exists('contact', array_merge($condition, $fields))) {
 876                                 DBA::update('contact', $fields, $condition);
 877                         }
 878                 }
 879
 880                 $condition = ['`id` = ? AND (`term-date` > ? OR `archive`)', $contact['id'], DBA::NULL_DATETIME];
 881                 $exists = DBA::exists('contact', $condition);
 882
 883                 // We don't need to update, we never marked this contact for archival
 884                 if (!$exists) {
 885                         return;
 886                 }
 887
 888                 Logger::info('Contact is marked as vital again', ['id' => $contact['id'], 'term-date' => $contact['term-date']]);
 889
 890                 if (!isset($contact['url']) && !empty($contact['id'])) {
 891                         $fields = ['id', 'url', 'batch'];
 892                         $contact = DBA::selectFirst('contact', $fields, ['id' => $contact['id']]);
 893                         if (!DBA::isResult($contact)) {
 894                                 return;
 895                         }
 896                 }
 897
 898                 // It's a miracle. Our dead contact has inexplicably come back to life.
 899                 $fields = ['failed' => false, 'term-date' => DBA::NULL_DATETIME, 'archive' => false];
 900                 DBA::update('contact', $fields, ['id' => $contact['id']]);
 901                 DBA::update('contact', $fields, ['nurl' => Strings::normaliseLink($contact['url']), 'self' => false]);
 902         }
 903
 904         /**
 905          * Returns the data array for the photo menu of a given contact
 906          *
 907          * @param array $contact contact
 908          * @param int   $uid     optional, default 0
 909          * @return array
 910          * @throws HTTPException\InternalServerErrorException
 911          * @throws \ImagickException
 912          */
 913         public static function photoMenu(array $contact, $uid = 0)
 914         {
 915                 $pm_url = '';
 916                 $status_link = '';
 917                 $photos_link = '';
 918                 $contact_drop_link = '';
 919                 $poke_link = '';
 920
 921                 if ($uid == 0) {
 922                         $uid = local_user();
 923                 }
 924
 925                 if (empty($contact['uid']) || ($contact['uid'] != $uid)) {
 926                         if ($uid == 0) {
 927                                 $profile_link = self::magicLinkByContact($contact);
 928                                 $menu = ['profile' => [DI::l10n()->t('View Profile'), $profile_link, true]];
 929
 930                                 return $menu;
 931                         }
 932
 933                         // Look for our own contact if the uid doesn't match and isn't public
 934                         $contact_own = DBA::selectFirst('contact', [], ['nurl' => $contact['nurl'], 'network' => $contact['network'], 'uid' => $uid]);
 935                         if (DBA::isResult($contact_own)) {
 936                                 return self::photoMenu($contact_own, $uid);
 937                         }
 938                 }
 939
 940                 $sparkle = false;
 941                 if (($contact['network'] === Protocol::DFRN) && !$contact['self'] && empty($contact['pending'])) {
 942                         $sparkle = true;
 943                         $profile_link = DI::baseUrl() . '/redir/' . $contact['id'];
 944                 } else {
 945                         $profile_link = $contact['url'];
 946                 }
 947
 948                 if ($profile_link === 'mailbox') {
 949                         $profile_link = '';
 950                 }
 951
 952                 if ($sparkle) {
 953                         $status_link = $profile_link . '/status';
 954                         $photos_link = str_replace('/profile/', '/photos/', $profile_link);
 955                         $profile_link = $profile_link . '/profile';
 956                 }
 957
 958                 if (self::canReceivePrivateMessages($contact) && empty($contact['pending'])) {
 959                         $pm_url = DI::baseUrl() . '/message/new/' . $contact['id'];
 960                 }
 961
 962                 if (($contact['network'] == Protocol::DFRN) && !$contact['self'] && empty($contact['pending'])) {
 963                         $poke_link = 'contact/' . $contact['id'] . '/poke';
 964                 }
 965
 966                 $contact_url = DI::baseUrl() . '/contact/' . $contact['id'];
 967
 968                 $posts_link = DI::baseUrl() . '/contact/' . $contact['id'] . '/conversations';
 969
 970                 if (!$contact['self']) {
 971                         $contact_drop_link = DI::baseUrl() . '/contact/' . $contact['id'] . '/drop?confirm=1';
 972                 }
 973
 974                 $follow_link = '';
 975                 $unfollow_link = '';
 976                 if (!$contact['self'] && in_array($contact['network'], Protocol::NATIVE_SUPPORT)) {
 977                         if ($contact['uid'] && in_array($contact['rel'], [self::SHARING, self::FRIEND])) {
 978                                 $unfollow_link = 'unfollow?url=' . urlencode($contact['url']) . '&auto=1';
 979                         } elseif(!$contact['pending']) {
 980                                 $follow_link = 'follow?url=' . urlencode($contact['url']) . '&auto=1';
 981                         }
 982                 }
 983
 984                 if (!empty($follow_link) || !empty($unfollow_link)) {
 985                         $contact_drop_link = '';
 986                 }
 987
 988                 /**
 989                  * Menu array:
 990                  * "name" => [ "Label", "link", (bool)Should the link opened in a new tab? ]
 991                  */
 992                 if (empty($contact['uid'])) {
 993                         $menu = [
 994                                 'profile' => [DI::l10n()->t('View Profile')  , $profile_link , true],
 995                                 'network' => [DI::l10n()->t('Network Posts') , $posts_link   , false],
 996                                 'edit'    => [DI::l10n()->t('View Contact')  , $contact_url  , false],
 997                                 'follow'  => [DI::l10n()->t('Connect/Follow'), $follow_link  , true],
 998                                 'unfollow'=> [DI::l10n()->t('UnFollow')      , $unfollow_link, true],
 999                         ];
1000                 } else {
1001                         $menu = [
1002                                 'status'  => [DI::l10n()->t('View Status')   , $status_link      , true],
1003                                 'profile' => [DI::l10n()->t('View Profile')  , $profile_link     , true],
1004                                 'photos'  => [DI::l10n()->t('View Photos')   , $photos_link      , true],
1005                                 'network' => [DI::l10n()->t('Network Posts') , $posts_link       , false],
1006                                 'edit'    => [DI::l10n()->t('View Contact')  , $contact_url      , false],
1007                                 'drop'    => [DI::l10n()->t('Drop Contact')  , $contact_drop_link, false],
1008                                 'pm'      => [DI::l10n()->t('Send PM')       , $pm_url           , false],
1009                                 'poke'    => [DI::l10n()->t('Poke')          , $poke_link        , false],
1010                                 'follow'  => [DI::l10n()->t('Connect/Follow'), $follow_link      , true],
1011                                 'unfollow'=> [DI::l10n()->t('UnFollow')      , $unfollow_link    , true],
1012                         ];
1013
1014                         if (!empty($contact['pending'])) {
1015                                 $intro = DBA::selectFirst('intro', ['id'], ['contact-id' => $contact['id']]);
1016                                 if (DBA::isResult($intro)) {
1017                                         $menu['follow'] = [DI::l10n()->t('Approve'), 'notifications/intros/' . $intro['id'], true];
1018                                 }
1019                         }
1020                 }
1021
1022                 $args = ['contact' => $contact, 'menu' => &$menu];
1023
1024                 Hook::callAll('contact_photo_menu', $args);
1025
1026                 $menucondensed = [];
1027
1028                 foreach ($menu as $menuname => $menuitem) {
1029                         if ($menuitem[1] != '') {
1030                                 $menucondensed[$menuname] = $menuitem;
1031                         }
1032                 }
1033
1034                 return $menucondensed;
1035         }
1036
1037         /**
1038          * Fetch the contact id for a given URL and user
1039          *
1040          * First lookup in the contact table to find a record matching either `url`, `nurl`,
1041          * `addr` or `alias`.
1042          *
1043          * If there's no record and we aren't looking for a public contact, we quit.
1044          * If there's one, we check that it isn't time to update the picture else we
1045          * directly return the found contact id.
1046          *
1047          * Second, we probe the provided $url whether it's http://server.tld/profile or
1048          * nick@server.tld. We quit if we can't get any info back.
1049          *
1050          * Third, we create the contact record if it doesn't exist
1051          *
1052          * Fourth, we update the existing record with the new data (avatar, alias, nick)
1053          * if there's any updates
1054          *
1055          * @param string  $url       Contact URL
1056          * @param integer $uid       The user id for the contact (0 = public contact)
1057          * @param boolean $update    true = always update, false = never update, null = update when not found
1058          * @param array   $default   Default value for creating the contact when everything else fails
1059          *
1060          * @return integer Contact ID
1061          * @throws HTTPException\InternalServerErrorException
1062          * @throws \ImagickException
1063          */
1064         public static function getIdForURL($url, $uid = 0, $update = null, $default = [])
1065         {
1066                 $contact_id = 0;
1067
1068                 if ($url == '') {
1069                         Logger::notice('Empty url, quitting', ['url' => $url, 'user' => $uid, 'default' => $default]);
1070                         return 0;
1071                 }
1072
1073                 $contact = self::getByURL($url, false, ['id', 'network'], $uid);
1074
1075                 if (!empty($contact)) {
1076                         $contact_id = $contact["id"];
1077
1078                         if (empty($update)) {
1079                                 Logger::debug('Contact found', ['url' => $url, 'uid' => $uid, 'update' => $update, 'cid' => $contact_id]);
1080                                 return $contact_id;
1081                         }
1082                 } elseif ($uid != 0) {
1083                         Logger::debug('Contact does not exist for the user', ['url' => $url, 'uid' => $uid, 'update' => $update]);
1084                         return 0;
1085                 } elseif (empty($default) && !is_null($update) && !$update) {
1086                         Logger::info('Contact not found, update not desired', ['url' => $url, 'uid' => $uid, 'update' => $update]);
1087                         return 0;
1088                 }
1089
1090                 $data = [];
1091
1092                 if (empty($default['network']) || $update) {
1093                         $data = Probe::uri($url, "", $uid);
1094
1095                         // Take the default values when probing failed
1096                         if (!empty($default) && !in_array($data["network"], array_merge(Protocol::NATIVE_SUPPORT, [Protocol::PUMPIO]))) {
1097                                 $data = array_merge($data, $default);
1098                         }
1099                 } elseif (!empty($default['network'])) {
1100                         $data = $default;
1101                 }
1102
1103                 if (($uid == 0) && (empty($data['network']) || ($data['network'] == Protocol::PHANTOM))) {
1104                         // Fetch data for the public contact via the first found personal contact
1105                         /// @todo Check if this case can happen at all (possibly with mail accounts?)
1106                         $fields = ['name', 'nick', 'url', 'addr', 'alias', 'avatar', 'header', 'contact-type',
1107                                 'keywords', 'location', 'about', 'unsearchable', 'batch', 'notify', 'poll',
1108                                 'request', 'confirm', 'poco', 'subscribe', 'network', 'baseurl', 'gsid'];
1109
1110                         $personal_contact = DBA::selectFirst('contact', $fields, ["`addr` = ? AND `uid` != 0", $url]);
1111                         if (!DBA::isResult($personal_contact)) {
1112                                 $personal_contact = DBA::selectFirst('contact', $fields, ["`nurl` = ? AND `uid` != 0", Strings::normaliseLink($url)]);
1113                         }
1114
1115                         if (DBA::isResult($personal_contact)) {
1116                                 Logger::info('Take contact data from personal contact', ['url' => $url, 'update' => $update, 'contact' => $personal_contact, 'callstack' => System::callstack(20)]);
1117                                 $data = $personal_contact;
1118                                 $data['photo'] = $personal_contact['avatar'];
1119                                 $data['account-type'] = $personal_contact['contact-type'];
1120                                 $data['hide'] = $personal_contact['unsearchable'];
1121                                 unset($data['avatar']);
1122                                 unset($data['contact-type']);
1123                                 unset($data['unsearchable']);
1124                         }
1125                 }
1126
1127                 if (empty($data['network']) || ($data['network'] == Protocol::PHANTOM)) {
1128                         Logger::notice('No valid network found', ['url' => $url, 'uid' => $uid, 'default' => $default, 'update' => $update, 'callstack' => System::callstack(20)]);
1129                         return 0;
1130                 }
1131
1132                 if (!$contact_id) {
1133                         $urls = [Strings::normaliseLink($url), Strings::normaliseLink($data['url'])];
1134                         if (!empty($data['alias'])) {
1135                                 $urls[] = Strings::normaliseLink($data['alias']);
1136                         }
1137                         $contact = self::selectFirst(['id'], ['nurl' => $urls, 'uid' => $uid]);
1138                         if (!empty($contact['id'])) {
1139                                 $contact_id = $contact['id'];
1140                                 Logger::info('Fetched id by url', ['cid' => $contact_id, 'uid' => $uid, 'url' => $url, 'data' => $data]);
1141                         }
1142                 }
1143
1144                 if (!$contact_id) {
1145                         // We only insert the basic data. The rest will be done in "updateFromProbeArray"
1146                         $fields = [
1147                                 'uid'       => $uid,
1148                                 'url'       => $data['url'],
1149                                 'nurl'      => Strings::normaliseLink($data['url']),
1150                                 'network'   => $data['network'],
1151                                 'created'   => DateTimeFormat::utcNow(),
1152                                 'rel'       => self::SHARING,
1153                                 'writable'  => 1,
1154                                 'blocked'   => 0,
1155                                 'readonly'  => 0,
1156                                 'pending'   => 0];
1157
1158                         $condition = ['nurl' => Strings::normaliseLink($data["url"]), 'uid' => $uid, 'deleted' => false];
1159
1160                         // Before inserting we do check if the entry does exist now.
1161                         if (DI::lock()->acquire(self::LOCK_INSERT, 0)) {
1162                                 $contact = DBA::selectFirst('contact', ['id'], $condition, ['order' => ['id']]);
1163                                 if (DBA::isResult($contact)) {
1164                                         $contact_id = $contact['id'];
1165                                         Logger::notice('Contact had been created (shortly) before', ['id' => $contact_id, 'url' => $url, 'uid' => $uid]);
1166                                 } else {
1167                                         DBA::insert('contact', $fields);
1168                                         $contact_id = DBA::lastInsertId();
1169                                         if ($contact_id) {
1170                                                 Logger::info('Contact inserted', ['id' => $contact_id, 'url' => $url, 'uid' => $uid]);
1171                                         }
1172                                 }
1173                                 DI::lock()->release(self::LOCK_INSERT);
1174                         } else {
1175                                 Logger::warning('Contact lock had not been acquired');
1176                         }
1177
1178                         if (!$contact_id) {
1179                                 Logger::info('Contact was not inserted', ['url' => $url, 'uid' => $uid]);
1180                                 return 0;
1181                         }
1182                 } else {
1183                         Logger::info('Contact will be updated', ['url' => $url, 'uid' => $uid, 'update' => $update, 'cid' => $contact_id]);
1184                 }
1185
1186                 self::updateFromProbeArray($contact_id, $data);
1187
1188                 // Don't return a number for a deleted account
1189                 if (!empty($data['account-type']) && $data['account-type'] == User::ACCOUNT_TYPE_DELETED) {
1190                         Logger::info('Contact is a tombstone', ['url' => $url, 'uid' => $uid]);
1191                         return 0;
1192                 }
1193
1194                 return $contact_id;
1195         }
1196
1197         /**
1198          * Checks if the contact is archived
1199          *
1200          * @param int $cid contact id
1201          *
1202          * @return boolean Is the contact archived?
1203          * @throws HTTPException\InternalServerErrorException
1204          */
1205         public static function isArchived(int $cid)
1206         {
1207                 if ($cid == 0) {
1208                         return false;
1209                 }
1210
1211                 $contact = DBA::selectFirst('contact', ['archive', 'url', 'batch'], ['id' => $cid]);
1212                 if (!DBA::isResult($contact)) {
1213                         return false;
1214                 }
1215
1216                 if ($contact['archive']) {
1217                         return true;
1218                 }
1219
1220                 // Check status of ActivityPub endpoints
1221                 $apcontact = APContact::getByURL($contact['url'], false);
1222                 if (!empty($apcontact)) {
1223                         if (!empty($apcontact['inbox']) && DBA::exists('inbox-status', ['archive' => true, 'url' => $apcontact['inbox']])) {
1224                                 return true;
1225                         }
1226
1227                         if (!empty($apcontact['sharedinbox']) && DBA::exists('inbox-status', ['archive' => true, 'url' => $apcontact['sharedinbox']])) {
1228                                 return true;
1229                         }
1230                 }
1231
1232                 // Check status of Diaspora endpoints
1233                 if (!empty($contact['batch'])) {
1234                         $condition = ['archive' => true, 'uid' => 0, 'network' => Protocol::FEDERATED, 'batch' => $contact['batch'], 'contact-type' => self::TYPE_RELAY];
1235                         return DBA::exists('contact', $condition);
1236                 }
1237
1238                 return false;
1239         }
1240
1241         /**
1242          * Checks if the contact is blocked
1243          *
1244          * @param int $cid contact id
1245          *
1246          * @return boolean Is the contact blocked?
1247          * @throws HTTPException\InternalServerErrorException
1248          */
1249         public static function isBlocked($cid)
1250         {
1251                 if ($cid == 0) {
1252                         return false;
1253                 }
1254
1255                 $blocked = DBA::selectFirst('contact', ['blocked', 'url'], ['id' => $cid]);
1256                 if (!DBA::isResult($blocked)) {
1257                         return false;
1258                 }
1259
1260                 if (Network::isUrlBlocked($blocked['url'])) {
1261                         return true;
1262                 }
1263
1264                 return (bool) $blocked['blocked'];
1265         }
1266
1267         /**
1268          * Checks if the contact is hidden
1269          *
1270          * @param int $cid contact id
1271          *
1272          * @return boolean Is the contact hidden?
1273          * @throws \Exception
1274          */
1275         public static function isHidden($cid)
1276         {
1277                 if ($cid == 0) {
1278                         return false;
1279                 }
1280
1281                 $hidden = DBA::selectFirst('contact', ['hidden'], ['id' => $cid]);
1282                 if (!DBA::isResult($hidden)) {
1283                         return false;
1284                 }
1285                 return (bool) $hidden['hidden'];
1286         }
1287
1288         /**
1289          * Returns posts from a given contact url
1290          *
1291          * @param string $contact_url Contact URL
1292          * @param bool   $thread_mode
1293          * @param int    $update      Update mode
1294          * @param int    $parent      Item parent ID for the update mode
1295          * @return string posts in HTML
1296          * @throws \Exception
1297          */
1298         public static function getPostsFromUrl($contact_url, $thread_mode = false, $update = 0, $parent = 0)
1299         {
1300                 return self::getPostsFromId(self::getIdForURL($contact_url), $thread_mode, $update, $parent);
1301         }
1302
1303         /**
1304          * Returns posts from a given contact id
1305          *
1306          * @param int  $cid         Contact ID
1307          * @param bool $thread_mode
1308          * @param int  $update      Update mode
1309          * @param int  $parent     Item parent ID for the update mode
1310          * @return string posts in HTML
1311          * @throws \Exception
1312          */
1313         public static function getPostsFromId($cid, $thread_mode = false, $update = 0, $parent = 0)
1314         {
1315                 $a = DI::app();
1316
1317                 $contact = DBA::selectFirst('contact', ['contact-type', 'network'], ['id' => $cid]);
1318                 if (!DBA::isResult($contact)) {
1319                         return '';
1320                 }
1321
1322                 if (empty($contact["network"]) || in_array($contact["network"], Protocol::FEDERATED)) {
1323                         $sql = "(`uid` = 0 OR (`uid` = ? AND NOT `global`))";
1324                 } else {
1325                         $sql = "`uid` = ?";
1326                 }
1327
1328                 $contact_field = ((($contact["contact-type"] == self::TYPE_COMMUNITY) || ($contact['network'] == Protocol::MAIL)) ? 'owner-id' : 'author-id');
1329
1330                 if ($thread_mode) {
1331                         $condition = ["((`$contact_field` = ? AND `gravity` = ?) OR (`author-id` = ? AND `gravity` = ? AND `vid` = ?)) AND " . $sql,
1332                                 $cid, GRAVITY_PARENT, $cid, GRAVITY_ACTIVITY, Verb::getID(Activity::ANNOUNCE), local_user()];
1333                 } else {
1334                         $condition = ["`$contact_field` = ? AND `gravity` IN (?, ?) AND " . $sql,
1335                                 $cid, GRAVITY_PARENT, GRAVITY_COMMENT, local_user()];
1336                 }
1337
1338                 if (!empty($parent)) {
1339                         $condition = DBA::mergeConditions($condition, ['parent' => $parent]);
1340                 } else {
1341                         $last_received = isset($_GET['last_received']) ? DateTimeFormat::utc($_GET['last_received']) : '';
1342                         if (!empty($last_received)) {
1343                                 $condition = DBA::mergeConditions($condition, ["`received` < ?", $last_received]);
1344                         }
1345                 }
1346
1347                 if (DI::mode()->isMobile()) {
1348                         $itemsPerPage = DI::pConfig()->get(local_user(), 'system', 'itemspage_mobile_network',
1349                                 DI::config()->get('system', 'itemspage_network_mobile'));
1350                 } else {
1351                         $itemsPerPage = DI::pConfig()->get(local_user(), 'system', 'itemspage_network',
1352                                 DI::config()->get('system', 'itemspage_network'));
1353                 }
1354
1355                 $pager = new Pager(DI::l10n(), DI::args()->getQueryString(), $itemsPerPage);
1356
1357                 $params = ['order' => ['received' => true], 'limit' => [$pager->getStart(), $pager->getItemsPerPage()]];
1358
1359                 if (DI::pConfig()->get(local_user(), 'system', 'infinite_scroll')) {
1360                         $tpl = Renderer::getMarkupTemplate('infinite_scroll_head.tpl');
1361                         $o = Renderer::replaceMacros($tpl, ['$reload_uri' => DI::args()->getQueryString()]);
1362                 } else {
1363                         $o = '';
1364                 }
1365
1366                 if ($thread_mode) {
1367                         $items = Post::toArray(Post::selectForUser(local_user(), ['uri-id', 'gravity', 'parent-uri-id', 'thr-parent-id', 'author-id'], $condition, $params));
1368
1369                         $o .= conversation($a, $items, 'contacts', $update, false, 'commented', local_user());
1370                 } else {
1371                         $items = Post::toArray(Post::selectForUser(local_user(), Item::DISPLAY_FIELDLIST, $condition, $params));
1372
1373                         $o .= conversation($a, $items, 'contact-posts', $update);
1374                 }
1375
1376                 if (!$update) {
1377                         if (DI::pConfig()->get(local_user(), 'system', 'infinite_scroll')) {
1378                                 $o .= HTML::scrollLoader();
1379                         } else {
1380                                 $o .= $pager->renderMinimal(count($items));
1381                         }
1382                 }
1383
1384                 return $o;
1385         }
1386
1387         /**
1388          * Returns the account type name
1389          *
1390          * The function can be called with either the user or the contact array
1391          *
1392          * @param array $contact contact or user array
1393          * @return string
1394          */
1395         public static function getAccountType(array $contact)
1396         {
1397                 // There are several fields that indicate that the contact or user is a forum
1398                 // "page-flags" is a field in the user table,
1399                 // "forum" and "prv" are used in the contact table. They stand for User::PAGE_FLAGS_COMMUNITY and User::PAGE_FLAGS_PRVGROUP.
1400                 if ((isset($contact['page-flags']) && (intval($contact['page-flags']) == User::PAGE_FLAGS_COMMUNITY))
1401                         || (isset($contact['page-flags']) && (intval($contact['page-flags']) == User::PAGE_FLAGS_PRVGROUP))
1402                         || (isset($contact['forum']) && intval($contact['forum']))
1403                         || (isset($contact['prv']) && intval($contact['prv']))
1404                         || (isset($contact['community']) && intval($contact['community']))
1405                 ) {
1406                         $type = self::TYPE_COMMUNITY;
1407                 } else {
1408                         $type = self::TYPE_PERSON;
1409                 }
1410
1411                 // The "contact-type" (contact table) and "account-type" (user table) are more general then the chaos from above.
1412                 if (isset($contact["contact-type"])) {
1413                         $type = $contact["contact-type"];
1414                 }
1415
1416                 if (isset($contact["account-type"])) {
1417                         $type = $contact["account-type"];
1418                 }
1419
1420                 switch ($type) {
1421                         case self::TYPE_ORGANISATION:
1422                                 $account_type = DI::l10n()->t("Organisation");
1423                                 break;
1424
1425                         case self::TYPE_NEWS:
1426                                 $account_type = DI::l10n()->t('News');
1427                                 break;
1428
1429                         case self::TYPE_COMMUNITY:
1430                                 $account_type = DI::l10n()->t("Forum");
1431                                 break;
1432
1433                         default:
1434                                 $account_type = "";
1435                                 break;
1436                 }
1437
1438                 return $account_type;
1439         }
1440
1441         /**
1442          * Blocks a contact
1443          *
1444          * @param int $cid
1445          * @return bool
1446          * @throws \Exception
1447          */
1448         public static function block($cid, $reason = null)
1449         {
1450                 $return = DBA::update('contact', ['blocked' => true, 'block_reason' => $reason], ['id' => $cid]);
1451
1452                 return $return;
1453         }
1454
1455         /**
1456          * Unblocks a contact
1457          *
1458          * @param int $cid
1459          * @return bool
1460          * @throws \Exception
1461          */
1462         public static function unblock($cid)
1463         {
1464                 $return = DBA::update('contact', ['blocked' => false, 'block_reason' => null], ['id' => $cid]);
1465
1466                 return $return;
1467         }
1468
1469         /**
1470          * Ensure that cached avatar exist
1471          *
1472          * @param integer $cid
1473          */
1474         public static function checkAvatarCache(int $cid)
1475         {
1476                 $contact = DBA::selectFirst('contact', ['url', 'avatar', 'photo', 'thumb', 'micro'], ['id' => $cid, 'uid' => 0, 'self' => false]);
1477                 if (!DBA::isResult($contact)) {
1478                         return;
1479                 }
1480
1481                 if (empty($contact['avatar']) || (!empty($contact['photo']) && !empty($contact['thumb']) && !empty($contact['micro']))) {
1482                         return;
1483                 }
1484
1485                 Logger::info('Adding avatar cache', ['id' => $cid, 'contact' => $contact]);
1486
1487                 self::updateAvatar($cid, $contact['avatar'], true);
1488         }
1489
1490         /**
1491          * Return the photo path for a given contact array in the given size
1492          *
1493          * @param array $contact    contact array
1494          * @param string $field     Fieldname of the photo in the contact array
1495          * @param string $size      Size of the avatar picture
1496          * @param string $avatar    Avatar path that is displayed when no photo had been found
1497          * @param bool  $no_update Don't perfom an update if no cached avatar was found
1498          * @return string photo path
1499          */
1500         private static function getAvatarPath(array $contact, string $field, string $size, string $avatar, $no_update = false)
1501         {
1502                 if (!empty($contact)) {
1503                         $contact = self::checkAvatarCacheByArray($contact, $no_update);
1504                         if (!empty($contact[$field])) {
1505                                 return $contact[$field];
1506                         } elseif (!empty($contact['id'])) {
1507                                 return self::getAvatarUrlForId($contact['id'], $size, $contact['updated'] ?? '');
1508                         } elseif (!empty($contact['avatar'])) {
1509                                 $avatar = $contact['avatar'];
1510                         }
1511                 }
1512
1513                 if (empty($avatar)) {
1514                         $avatar = self::getDefaultAvatar([], $size);
1515                 }
1516
1517                 if (Proxy::isLocalImage($avatar)) {
1518                         return $avatar;
1519                 } else {
1520                         return Proxy::proxifyUrl($avatar, false, $size);
1521                 }
1522         }
1523
1524         /**
1525          * Return the photo path for a given contact array
1526          *
1527          * @param array  $contact   Contact array
1528          * @param string $avatar    Avatar path that is displayed when no photo had been found
1529          * @param bool   $no_update Don't perfom an update if no cached avatar was found
1530          * @return string photo path
1531          */
1532         public static function getPhoto(array $contact, string $avatar = '', bool $no_update = false)
1533         {
1534                 return self::getAvatarPath($contact, 'photo', Proxy::SIZE_SMALL, $avatar, $no_update);
1535         }
1536
1537         /**
1538          * Return the photo path (thumb size) for a given contact array
1539          *
1540          * @param array  $contact   Contact array
1541          * @param string $avatar    Avatar path that is displayed when no photo had been found
1542          * @param bool   $no_update Don't perfom an update if no cached avatar was found
1543          * @return string photo path
1544          */
1545         public static function getThumb(array $contact, string $avatar = '', bool $no_update = false)
1546         {
1547                 return self::getAvatarPath($contact, 'thumb', Proxy::SIZE_THUMB, $avatar, $no_update);
1548         }
1549
1550         /**
1551          * Return the photo path (micro size) for a given contact array
1552          *
1553          * @param array  $contact   Contact array
1554          * @param string $avatar    Avatar path that is displayed when no photo had been found
1555          * @param bool   $no_update Don't perfom an update if no cached avatar was found
1556          * @return string photo path
1557          */
1558         public static function getMicro(array $contact, string $avatar = '', bool $no_update = false)
1559         {
1560                 return self::getAvatarPath($contact, 'micro', Proxy::SIZE_MICRO, $avatar, $no_update);
1561         }
1562
1563         /**
1564          * Check the given contact array for avatar cache fields
1565          *
1566          * @param array $contact
1567          * @param bool  $no_update Don't perfom an update if no cached avatar was found
1568          * @return array contact array with avatar cache fields
1569          */
1570         private static function checkAvatarCacheByArray(array $contact, bool $no_update = false)
1571         {
1572                 $update = false;
1573                 $contact_fields = [];
1574                 $fields = ['photo', 'thumb', 'micro'];
1575                 foreach ($fields as $field) {
1576                         if (isset($contact[$field])) {
1577                                 $contact_fields[] = $field;
1578                         }
1579                         if (isset($contact[$field]) && empty($contact[$field])) {
1580                                 $update = true;
1581                         }
1582                 }
1583
1584                 if (!$update || $no_update) {
1585                         return $contact;
1586                 }
1587
1588                 if (!empty($contact['id']) && !empty($contact['avatar'])) {
1589                         self::updateAvatar($contact['id'], $contact['avatar'], true);
1590
1591                         $new_contact = self::getById($contact['id'], $contact_fields);
1592                         if (DBA::isResult($new_contact)) {
1593                                 // We only update the cache fields
1594                                 $contact = array_merge($contact, $new_contact);
1595                         }
1596                 }
1597
1598                 /// add the default avatars if the fields aren't filled
1599                 if (isset($contact['photo']) && empty($contact['photo'])) {
1600                         $contact['photo'] = self::getDefaultAvatar($contact, Proxy::SIZE_SMALL);
1601                 }
1602                 if (isset($contact['thumb']) && empty($contact['thumb'])) {
1603                         $contact['thumb'] = self::getDefaultAvatar($contact, Proxy::SIZE_THUMB);
1604                 }
1605                 if (isset($contact['micro']) && empty($contact['micro'])) {
1606                         $contact['micro'] = self::getDefaultAvatar($contact, Proxy::SIZE_MICRO);
1607                 }
1608
1609                 return $contact;
1610         }
1611
1612         /**
1613          * Fetch the default avatar for the given contact and size
1614          *
1615          * @param array $contact  contact array
1616          * @param string $size    Size of the avatar picture
1617          * @return string avatar URL
1618          */
1619         public static function getDefaultAvatar(array $contact, string $size)
1620         {
1621                 switch ($size) {
1622                         case Proxy::SIZE_MICRO:
1623                                 $avatar['size'] = 48;
1624                                 $default = self::DEFAULT_AVATAR_MICRO;
1625                                 break;
1626
1627                         case Proxy::SIZE_THUMB:
1628                                 $avatar['size'] = 80;
1629                                 $default = self::DEFAULT_AVATAR_THUMB;
1630                                 break;
1631
1632                         case Proxy::SIZE_SMALL:
1633                         default:
1634                                 $avatar['size'] = 300;
1635                                 $default = self::DEFAULT_AVATAR_PHOTO;
1636                                 break;
1637                 }
1638
1639                 if (!DI::config()->get('system', 'remote_avatar_lookup')) {
1640                         return DI::baseUrl() . $default;
1641                 }
1642
1643                 if (!empty($contact['xmpp'])) {
1644                         $avatar['email'] = $contact['xmpp'];
1645                 } elseif (!empty($contact['addr'])) {
1646                         $avatar['email'] = $contact['addr'];
1647                 } elseif (!empty($contact['url'])) {
1648                         $avatar['email'] = $contact['url'];
1649                 } else {
1650                         return DI::baseUrl() . $default;
1651                 }
1652
1653                 $avatar['url'] = '';
1654                 $avatar['success'] = false;
1655
1656                 Hook::callAll('avatar_lookup', $avatar);
1657
1658                 if ($avatar['success'] && !empty($avatar['url'])) {
1659                         return $avatar['url'];
1660                 }
1661
1662                 return DI::baseUrl() . $default;
1663         }
1664
1665         /**
1666          * Get avatar link for given contact id
1667          *
1668          * @param integer $cid     contact id
1669          * @param string  $size    One of the ProxyUtils::SIZE_* constants
1670          * @param string  $updated Contact update date
1671          * @return string avatar link
1672          */
1673         public static function getAvatarUrlForId(int $cid, string $size = '', string $updated = ''):string
1674         {
1675                 // We have to fetch the "updated" variable when it wasn't provided
1676                 // The parameter can be provided to improve performance
1677                 if (empty($updated)) {
1678                         $contact = self::getById($cid, ['updated']);
1679                         $updated = $contact['updated'] ?? '';
1680                 }
1681
1682                 $url = DI::baseUrl() . '/photo/contact/';
1683                 switch ($size) {
1684                         case Proxy::SIZE_MICRO:
1685                                 $url .= Proxy::PIXEL_MICRO . '/';
1686                                 break;
1687                         case Proxy::SIZE_THUMB:
1688                                 $url .= Proxy::PIXEL_THUMB . '/';
1689                                 break;
1690                         case Proxy::SIZE_SMALL:
1691                                 $url .= Proxy::PIXEL_SMALL . '/';
1692                                 break;
1693                         case Proxy::SIZE_MEDIUM:
1694                                 $url .= Proxy::PIXEL_MEDIUM . '/';
1695                                 break;
1696                         case Proxy::SIZE_LARGE:
1697                                 $url .= Proxy::PIXEL_LARGE . '/';
1698                                 break;
1699                 }
1700                 return $url . $cid . ($updated ? '?ts=' . strtotime($updated) : '');
1701         }
1702
1703         /**
1704          * Get avatar link for given contact URL
1705          *
1706          * @param string  $url  contact url
1707          * @param integer $uid  user id
1708          * @param string  $size One of the ProxyUtils::SIZE_* constants
1709          * @return string avatar link
1710          */
1711         public static function getAvatarUrlForUrl(string $url, int $uid, string $size = ''):string
1712         {
1713                 $condition = ["`nurl` = ? AND ((`uid` = ? AND `network` IN (?, ?)) OR `uid` = ?)",
1714                         Strings::normaliseLink($url), $uid, Protocol::FEED, Protocol::MAIL, 0];
1715                 $contact = self::selectFirst(['id', 'updated'], $condition);
1716                 return self::getAvatarUrlForId($contact['id'] ?? 0, $size, $contact['updated']);
1717         }
1718
1719         /**
1720          * Get header link for given contact id
1721          *
1722          * @param integer $cid     contact id
1723          * @param string  $size    One of the ProxyUtils::SIZE_* constants
1724          * @param string  $updated Contact update date
1725          * @return string header link
1726          */
1727         public static function getHeaderUrlForId(int $cid, string $size = '', string $updated = ''):string
1728         {
1729                 // We have to fetch the "updated" variable when it wasn't provided
1730                 // The parameter can be provided to improve performance
1731                 if (empty($updated)) {
1732                         $contact = self::getById($cid, ['updated']);
1733                         $updated = $contact['updated'] ?? '';
1734                 }
1735
1736                 $url = DI::baseUrl() . '/photo/header/';
1737                 switch ($size) {
1738                         case Proxy::SIZE_MICRO:
1739                                 $url .= Proxy::PIXEL_MICRO . '/';
1740                                 break;
1741                         case Proxy::SIZE_THUMB:
1742                                 $url .= Proxy::PIXEL_THUMB . '/';
1743                                 break;
1744                         case Proxy::SIZE_SMALL:
1745                                 $url .= Proxy::PIXEL_SMALL . '/';
1746                                 break;
1747                         case Proxy::SIZE_MEDIUM:
1748                                 $url .= Proxy::PIXEL_MEDIUM . '/';
1749                                 break;
1750                         case Proxy::SIZE_LARGE:
1751                                 $url .= Proxy::PIXEL_LARGE . '/';
1752                                 break;
1753                 }
1754
1755                 return $url . $cid . ($updated ? '?ts=' . strtotime($updated) : '');
1756         }
1757
1758         /**
1759          * Updates the avatar links in a contact only if needed
1760          *
1761          * @param int    $cid          Contact id
1762          * @param string $avatar       Link to avatar picture
1763          * @param bool   $force        force picture update
1764          * @param bool   $create_cache Enforces the creation of cached avatar fields
1765          *
1766          * @return void
1767          * @throws HTTPException\InternalServerErrorException
1768          * @throws HTTPException\NotFoundException
1769          * @throws \ImagickException
1770          */
1771         public static function updateAvatar(int $cid, string $avatar, bool $force = false, bool $create_cache = false)
1772         {
1773                 $contact = DBA::selectFirst('contact', ['uid', 'avatar', 'photo', 'thumb', 'micro', 'xmpp', 'addr', 'nurl', 'url', 'network'],
1774                         ['id' => $cid, 'self' => false]);
1775                 if (!DBA::isResult($contact)) {
1776                         return;
1777                 }
1778
1779                 $uid = $contact['uid'];
1780
1781                 // Only update the cached photo links of public contacts when they already are cached
1782                 if (($uid == 0) && !$force && empty($contact['thumb']) && empty($contact['micro']) && !$create_cache) {
1783                         if ($contact['avatar'] != $avatar) {
1784                                 DBA::update('contact', ['avatar' => $avatar], ['id' => $cid]);
1785                                 Logger::info('Only update the avatar', ['id' => $cid, 'avatar' => $avatar, 'contact' => $contact]);
1786                         }
1787                         return;
1788                 }
1789
1790                 // User contacts use are updated through the public contacts
1791                 if (($uid != 0) && !in_array($contact['network'], [Protocol::FEED, Protocol::MAIL])) {
1792                         $pcid = self::getIdForURL($contact['url'], false);
1793                         if (!empty($pcid)) {
1794                                 Logger::debug('Update the private contact via the public contact', ['id' => $cid, 'uid' => $uid, 'public' => $pcid]);
1795                                 self::updateAvatar($pcid, $avatar, $force, true);
1796                                 return;
1797                         }
1798                 }
1799
1800                 $default_avatar = empty($avatar) || strpos($avatar, self::DEFAULT_AVATAR_PHOTO);
1801
1802                 if ($default_avatar) {
1803                         $avatar = self::getDefaultAvatar($contact, Proxy::SIZE_SMALL);
1804                 }
1805
1806                 if ($default_avatar && Proxy::isLocalImage($avatar)) {
1807                         $fields = ['avatar' => $avatar, 'avatar-date' => DateTimeFormat::utcNow(),
1808                                 'photo' => $avatar,
1809                                 'thumb' => self::getDefaultAvatar($contact, Proxy::SIZE_THUMB),
1810                                 'micro' => self::getDefaultAvatar($contact, Proxy::SIZE_MICRO)];
1811                         Logger::debug('Use default avatar', ['id' => $cid, 'uid' => $uid]);
1812                 }
1813
1814                 // Use the data from the self account
1815                 if (empty($fields)) {
1816                         $local_uid = User::getIdForURL($contact['url']);
1817                         if (!empty($local_uid)) {
1818                                 $fields = self::selectFirst(['avatar', 'avatar-date', 'photo', 'thumb', 'micro'], ['self' => true, 'uid' => $local_uid]);
1819                                 Logger::debug('Use owner data', ['id' => $cid, 'uid' => $uid, 'owner-uid' => $local_uid]);
1820                         }
1821                 }
1822
1823                 if (empty($fields)) {
1824                         $update = ($contact['avatar'] != $avatar) || $force;
1825
1826                         if (!$update) {
1827                                 $data = [
1828                                         $contact['photo'] ?? '',
1829                                         $contact['thumb'] ?? '',
1830                                         $contact['micro'] ?? '',
1831                                 ];
1832
1833                                 foreach ($data as $image_uri) {
1834                                         $image_rid = Photo::ridFromURI($image_uri);
1835                                         if ($image_rid && !Photo::exists(['resource-id' => $image_rid, 'uid' => $uid])) {
1836                                                 Logger::debug('Regenerating avatar', ['contact uid' => $uid, 'cid' => $cid, 'missing photo' => $image_rid, 'avatar' => $contact['avatar']]);
1837                                                 $update = true;
1838                                         }
1839                                 }
1840                         }
1841
1842                         if ($update) {
1843                                 $photos = Photo::importProfilePhoto($avatar, $uid, $cid, true);
1844                                 if ($photos) {
1845                                         $fields = ['avatar' => $avatar, 'photo' => $photos[0], 'thumb' => $photos[1], 'micro' => $photos[2], 'avatar-date' => DateTimeFormat::utcNow()];
1846                                         $update = !empty($fields);
1847                                         Logger::debug('Created new cached avatars', ['id' => $cid, 'uid' => $uid, 'owner-uid' => $local_uid]);
1848                                 } else {
1849                                         $update = false;
1850                                 }
1851                         }
1852                 } else {
1853                         $update = ($fields['photo'] . $fields['thumb'] . $fields['micro'] != $contact['photo'] . $contact['thumb'] . $contact['micro']) || $force;
1854                 }
1855
1856                 if (!$update) {
1857                         return;
1858                 }
1859
1860                 $cids = [];
1861                 $uids = [];
1862                 if (($uid == 0) && !in_array($contact['network'], [Protocol::FEED, Protocol::MAIL])) {
1863                         // Collect all user contacts of the given public contact
1864                         $personal_contacts = DBA::select('contact', ['id', 'uid'],
1865                                 ["`nurl` = ? AND `id` != ? AND NOT `self`", $contact['nurl'], $cid]);
1866                         while ($personal_contact = DBA::fetch($personal_contacts)) {
1867                                 $cids[] = $personal_contact['id'];
1868                                 $uids[] = $personal_contact['uid'];
1869                         }
1870                         DBA::close($personal_contacts);
1871
1872                         if (!empty($cids)) {
1873                                 // Delete possibly existing cached user contact avatars
1874                                 Photo::delete(['uid' => $uids, 'contact-id' => $cids, 'album' => Photo::CONTACT_PHOTOS]);
1875                         }
1876                 }
1877
1878                 $cids[] = $cid;
1879                 $uids[] = $uid;
1880                 Logger::info('Updating cached contact avatars', ['cid' => $cids, 'uid' => $uids, 'fields' => $fields]);
1881                 DBA::update('contact', $fields, ['id' => $cids]);
1882         }
1883
1884         public static function deleteContactByUrl(string $url)
1885         {
1886                 // Update contact data for all users
1887                 $condition = ['self' => false, 'nurl' => Strings::normaliseLink($url)];
1888                 $contacts = DBA::select('contact', ['id', 'uid'], $condition);
1889                 while ($contact = DBA::fetch($contacts)) {
1890                         Logger::info('Deleting contact', ['id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $url]);
1891                         self::remove($contact['id']);
1892                 }
1893         }
1894
1895         /**
1896          * Helper function for "updateFromProbe". Updates personal and public contact
1897          *
1898          * @param integer $id      contact id
1899          * @param integer $uid     user id
1900          * @param string  $old_url The previous profile URL of the contact
1901          * @param string  $new_url The profile URL of the contact
1902          * @param array   $fields  The fields that are updated
1903          *
1904          * @throws \Exception
1905          */
1906         private static function updateContact(int $id, int $uid, string $old_url, string $new_url, array $fields)
1907         {
1908                 if (Strings::normaliseLink($new_url) != Strings::normaliseLink($old_url)) {
1909                         Logger::notice('New URL differs from old URL', ['old' => $old_url, 'new' => $new_url]);
1910                         // @todo It is to decide what to do when the URL is changed
1911                 }
1912
1913                 if (!DBA::update('contact', $fields, ['id' => $id])) {
1914                         Logger::info('Couldn\'t update contact.', ['id' => $id, 'fields' => $fields]);
1915                         return;
1916                 }
1917
1918                 // Search for duplicated contacts and get rid of them
1919                 if (self::removeDuplicates(Strings::normaliseLink($new_url), $uid)) {
1920                         return;
1921                 }
1922
1923                 // Archive or unarchive the contact.
1924                 $contact = DBA::selectFirst('contact', [], ['id' => $id]);
1925                 if (!DBA::isResult($contact)) {
1926                         Logger::info('Couldn\'t select contact for archival.', ['id' => $id]);
1927                         return;
1928                 }
1929
1930                 if (isset($fields['failed'])) {
1931                         if ($fields['failed']) {
1932                                 self::markForArchival($contact);
1933                         } else {
1934                                 self::unmarkForArchival($contact);
1935                         }
1936                 }
1937
1938                 if ($contact['uid'] != 0) {
1939                         return;
1940                 }
1941
1942                 // Update contact data for all users
1943                 $condition = ['self' => false, 'nurl' => Strings::normaliseLink($old_url)];
1944
1945                 $condition['network'] = [Protocol::DFRN, Protocol::DIASPORA, Protocol::ACTIVITYPUB];
1946                 DBA::update('contact', $fields, $condition);
1947
1948                 // We mustn't set the update fields for OStatus contacts since they are updated in OnePoll
1949                 $condition['network'] = Protocol::OSTATUS;
1950
1951                 // If the contact failed, propagate the update fields to all contacts
1952                 if (empty($fields['failed'])) {
1953                         unset($fields['last-update']);
1954                         unset($fields['success_update']);
1955                         unset($fields['failure_update']);
1956                 }
1957
1958                 if (empty($fields)) {
1959                         return;
1960                 }
1961
1962                 DBA::update('contact', $fields, $condition);
1963         }
1964
1965         /**
1966          * Remove duplicated contacts
1967          *
1968          * @param string  $nurl  Normalised contact url
1969          * @param integer $uid   User id
1970          * @return boolean
1971          * @throws \Exception
1972          */
1973         public static function removeDuplicates(string $nurl, int $uid)
1974         {
1975                 $condition = ['nurl' => $nurl, 'uid' => $uid, 'deleted' => false, 'network' => Protocol::FEDERATED];
1976                 $count = DBA::count('contact', $condition);
1977                 if ($count <= 1) {
1978                         return false;
1979                 }
1980
1981                 $first_contact = DBA::selectFirst('contact', ['id', 'network'], $condition, ['order' => ['id']]);
1982                 if (!DBA::isResult($first_contact)) {
1983                         // Shouldn't happen - so we handle it
1984                         return false;
1985                 }
1986
1987                 $first = $first_contact['id'];
1988                 Logger::info('Found duplicates', ['count' => $count, 'first' => $first, 'uid' => $uid, 'nurl' => $nurl]);
1989                 if (($uid != 0 && ($first_contact['network'] == Protocol::DFRN))) {
1990                         // Don't handle non public DFRN duplicates by now (legacy DFRN is very special because of the key handling)
1991                         Logger::info('Not handling non public DFRN duplicate', ['uid' => $uid, 'nurl' => $nurl]);
1992                         return false;
1993                 }
1994
1995                 // Find all duplicates
1996                 $condition = ["`nurl` = ? AND `uid` = ? AND `id` != ? AND NOT `self` AND NOT `deleted`", $nurl, $uid, $first];
1997                 $duplicates = DBA::select('contact', ['id', 'network'], $condition);
1998                 while ($duplicate = DBA::fetch($duplicates)) {
1999                         if (!in_array($duplicate['network'], Protocol::FEDERATED)) {
2000                                 continue;
2001                         }
2002
2003                         Worker::add(PRIORITY_HIGH, 'MergeContact', $first, $duplicate['id'], $uid);
2004                 }
2005                 DBA::close($duplicates);
2006                 Logger::info('Duplicates handled', ['uid' => $uid, 'nurl' => $nurl, 'callstack' => System::callstack(20)]);
2007                 return true;
2008         }
2009
2010         /**
2011          * @param integer $id      contact id
2012          * @param string  $network Optional network we are probing for
2013          * @return boolean
2014          * @throws HTTPException\InternalServerErrorException
2015          * @throws \ImagickException
2016          */
2017         public static function updateFromProbe(int $id, string $network = '')
2018         {
2019                 $contact = DBA::selectFirst('contact', ['uid', 'url'], ['id' => $id]);
2020                 if (!DBA::isResult($contact)) {
2021                         return false;
2022                 }
2023
2024                 $ret = Probe::uri($contact['url'], $network, $contact['uid']);
2025                 return self::updateFromProbeArray($id, $ret);
2026         }
2027
2028         /**
2029          * @param integer $id      contact id
2030          * @param array   $ret     Probed data
2031          * @return boolean
2032          * @throws HTTPException\InternalServerErrorException
2033          * @throws \ImagickException
2034          */
2035         private static function updateFromProbeArray(int $id, array $ret)
2036         {
2037                 /*
2038                   Warning: Never ever fetch the public key via Probe::uri and write it into the contacts.
2039                   This will reliably kill your communication with old Friendica contacts.
2040                  */
2041
2042                 // These fields aren't updated by this routine:
2043                 // 'xmpp', 'sensitive'
2044
2045                 $fields = ['uid', 'avatar', 'header', 'name', 'nick', 'location', 'keywords', 'about', 'subscribe',
2046                         'manually-approve', 'unsearchable', 'url', 'addr', 'batch', 'notify', 'poll', 'request', 'confirm', 'poco',
2047                         'network', 'alias', 'baseurl', 'gsid', 'forum', 'prv', 'contact-type', 'pubkey', 'last-item'];
2048                 $contact = DBA::selectFirst('contact', $fields, ['id' => $id]);
2049                 if (!DBA::isResult($contact)) {
2050                         return false;
2051                 }
2052
2053                 if (self::isLocal($ret['url'])) {
2054                         Logger::info('Local contacts are not updated here.');
2055                         return true;
2056                 }
2057
2058                 if (!empty($ret['account-type']) && $ret['account-type'] == User::ACCOUNT_TYPE_DELETED) {
2059                         Logger::info('Deleted account', ['id' => $id, 'url' => $ret['url'], 'ret' => $ret]);
2060                         self::remove($id);
2061
2062                         // Delete all contacts with the same URL
2063                         self::deleteContactByUrl($ret['url']);
2064                         return true;
2065                 }
2066
2067                 $uid = $contact['uid'];
2068                 unset($contact['uid']);
2069
2070                 $pubkey = $contact['pubkey'];
2071                 unset($contact['pubkey']);
2072
2073                 $contact['photo'] = $contact['avatar'];
2074                 unset($contact['avatar']);
2075
2076                 $updated = DateTimeFormat::utcNow();
2077
2078                 // We must not try to update relay contacts via probe. They are no real contacts.
2079                 // We check after the probing to be able to correct falsely detected contact types.
2080                 if (($contact['contact-type'] == self::TYPE_RELAY) &&
2081                         (!Strings::compareLink($ret['url'], $contact['url']) || in_array($ret['network'], [Protocol::FEED, Protocol::PHANTOM]))) {
2082                         self::updateContact($id, $uid, $contact['url'], $contact['url'], ['failed' => false, 'last-update' => $updated, 'success_update' => $updated]);
2083                         Logger::info('Not updating relais', ['id' => $id, 'url' => $contact['url']]);
2084                         return true;
2085                 }
2086
2087                 // If Probe::uri fails the network code will be different ("feed" or "unkn")
2088                 if (($ret['network'] == Protocol::PHANTOM) || (($ret['network'] == Protocol::FEED) && ($ret['network'] != $contact['network']))) {
2089                         self::updateContact($id, $uid, $contact['url'], $ret['url'], ['failed' => true, 'last-update' => $updated, 'failure_update' => $updated]);
2090                         return false;
2091                 }
2092
2093                 if (isset($ret['hide']) && is_bool($ret['hide'])) {
2094                         $ret['unsearchable'] = $ret['hide'];
2095                 }
2096
2097                 if (isset($ret['account-type']) && is_int($ret['account-type'])) {
2098                         $ret['forum'] = false;
2099                         $ret['prv'] = false;
2100                         $ret['contact-type'] = $ret['account-type'];
2101                         if (($ret['contact-type'] == User::ACCOUNT_TYPE_COMMUNITY) && isset($ret['manually-approve'])) {
2102                                 $ret['forum'] = (bool)!$ret['manually-approve'];
2103                                 $ret['prv'] = (bool)!$ret['forum'];
2104                         }
2105                 }
2106
2107                 $new_pubkey = $ret['pubkey'] ?? '';
2108
2109                 if ($uid == 0) {
2110                         $ret['last-item'] = Probe::getLastUpdate($ret);
2111                         Logger::info('Fetched last item', ['id' => $id, 'probed_url' => $ret['url'], 'last-item' => $ret['last-item'], 'callstack' => System::callstack(20)]);
2112                 }
2113
2114                 $update = false;
2115
2116                 // make sure to not overwrite existing values with blank entries except some technical fields
2117                 $keep = ['batch', 'notify', 'poll', 'request', 'confirm', 'poco', 'baseurl'];
2118                 foreach ($ret as $key => $val) {
2119                         if (!array_key_exists($key, $contact)) {
2120                                 unset($ret[$key]);
2121                         } elseif (($contact[$key] != '') && ($val === '') && !is_bool($ret[$key]) && !in_array($key, $keep)) {
2122                                 $ret[$key] = $contact[$key];
2123                         } elseif ($ret[$key] != $contact[$key]) {
2124                                 $update = true;
2125                         }
2126                 }
2127
2128                 if (!empty($ret['last-item']) && ($contact['last-item'] < $ret['last-item'])) {
2129                         $update = true;
2130                 } else {
2131                         unset($ret['last-item']);
2132                 }
2133
2134                 if (!empty($ret['photo']) && ($ret['network'] != Protocol::FEED)) {
2135                         self::updateAvatar($id, $ret['photo'], $update);
2136                 }
2137
2138                 if (!$update) {
2139                         self::updateContact($id, $uid, $contact['url'], $ret['url'], ['failed' => false, 'last-update' => $updated, 'success_update' => $updated]);
2140
2141                         if (Contact\Relation::isDiscoverable($ret['url'])) {
2142                                 Worker::add(PRIORITY_LOW, 'ContactDiscovery', $ret['url']);
2143                         }
2144
2145                         // Update the public contact
2146                         if ($uid != 0) {
2147                                 $contact = self::getByURL($ret['url'], false, ['id']);
2148                                 if (!empty($contact['id'])) {
2149                                         self::updateFromProbeArray($contact['id'], $ret);
2150                                 }
2151                         }
2152
2153                         return true;
2154                 }
2155
2156                 $ret['nurl'] = Strings::normaliseLink($ret['url']);
2157                 $ret['updated'] = $updated;
2158                 $ret['failed'] = false;
2159
2160                 // Only fill the pubkey if it had been empty before. We have to prevent identity theft.
2161                 if (empty($pubkey) && !empty($new_pubkey)) {
2162                         $ret['pubkey'] = $new_pubkey;
2163                 }
2164
2165                 if ((!empty($ret['addr']) && ($ret['addr'] != $contact['addr'])) || (!empty($ret['alias']) && ($ret['alias'] != $contact['alias']))) {
2166                         $ret['uri-date'] = DateTimeFormat::utcNow();
2167                 }
2168
2169                 if (($ret['name'] != $contact['name']) || ($ret['nick'] != $contact['nick'])) {
2170                         $ret['name-date'] = $updated;
2171                 }
2172
2173                 if (($uid == 0) || in_array($ret['network'], [Protocol::DFRN, Protocol::DIASPORA, Protocol::ACTIVITYPUB])) {
2174                         $ret['last-update'] = $updated;
2175                         $ret['success_update'] = $updated;
2176                 }
2177
2178                 unset($ret['photo']);
2179
2180                 self::updateContact($id, $uid, $contact['url'], $ret['url'], $ret);
2181
2182                 if (Contact\Relation::isDiscoverable($ret['url'])) {
2183                         Worker::add(PRIORITY_LOW, 'ContactDiscovery', $ret['url']);
2184                 }
2185
2186                 return true;
2187         }
2188
2189         /**
2190          * @param integer $url contact url
2191          * @return integer Contact id
2192          * @throws HTTPException\InternalServerErrorException
2193          * @throws \ImagickException
2194          */
2195         public static function updateFromProbeByURL($url)
2196         {
2197                 $id = self::getIdForURL($url);
2198
2199                 if (empty($id)) {
2200                         return $id;
2201                 }
2202
2203                 self::updateFromProbe($id);
2204
2205                 return $id;
2206         }
2207
2208         /**
2209          * Detects if a given contact array belongs to a legacy DFRN connection
2210          *
2211          * @param array $contact
2212          * @return boolean
2213          */
2214         public static function isLegacyDFRNContact($contact)
2215         {
2216                 // Newer Friendica contacts are connected via AP, then these fields aren't set
2217                 return !empty($contact['dfrn-id']) || !empty($contact['issued-id']);
2218         }
2219
2220         /**
2221          * Detects the communication protocol for a given contact url.
2222          * This is used to detect Friendica contacts that we can communicate via AP.
2223          *
2224          * @param string $url contact url
2225          * @param string $network Network of that contact
2226          * @return string with protocol
2227          */
2228         public static function getProtocol($url, $network)
2229         {
2230                 if ($network != Protocol::DFRN) {
2231                         return $network;
2232                 }
2233
2234                 $apcontact = APContact::getByURL($url);
2235                 if (!empty($apcontact) && !empty($apcontact['generator'])) {
2236                         return Protocol::ACTIVITYPUB;
2237                 } else {
2238                         return $network;
2239                 }
2240         }
2241
2242         /**
2243          * Takes a $uid and a url/handle and adds a new contact
2244          *
2245          * Currently if the contact is DFRN, interactive needs to be true, to redirect to the
2246          * dfrn_request page.
2247          *
2248          * Otherwise this can be used to bulk add StatusNet contacts, Twitter contacts, etc.
2249          *
2250          * Returns an array
2251          * $return['success'] boolean true if successful
2252          * $return['message'] error text if success is false.
2253          *
2254          * Takes a $uid and a url/handle and adds a new contact
2255          *
2256          * @param array  $user        The user the contact should be created for
2257          * @param string $url         The profile URL of the contact
2258          * @param bool   $interactive
2259          * @param string $network
2260          * @return array
2261          * @throws HTTPException\InternalServerErrorException
2262          * @throws HTTPException\NotFoundException
2263          * @throws \ImagickException
2264          */
2265         public static function createFromProbe(array $user, $url, $interactive = false, $network = '')
2266         {
2267                 $result = ['cid' => -1, 'success' => false, 'message' => ''];
2268
2269                 // remove ajax junk, e.g. Twitter
2270                 $url = str_replace('/#!/', '/', $url);
2271
2272                 if (!Network::isUrlAllowed($url)) {
2273                         $result['message'] = DI::l10n()->t('Disallowed profile URL.');
2274                         return $result;
2275                 }
2276
2277                 if (Network::isUrlBlocked($url)) {
2278                         $result['message'] = DI::l10n()->t('Blocked domain');
2279                         return $result;
2280                 }
2281
2282                 if (!$url) {
2283                         $result['message'] = DI::l10n()->t('Connect URL missing.');
2284                         return $result;
2285                 }
2286
2287                 $arr = ['url' => $url, 'contact' => []];
2288
2289                 Hook::callAll('follow', $arr);
2290
2291                 if (empty($arr)) {
2292                         $result['message'] = DI::l10n()->t('The contact could not be added. Please check the relevant network credentials in your Settings -> Social Networks page.');
2293                         return $result;
2294                 }
2295
2296                 if (!empty($arr['contact']['name'])) {
2297                         $ret = $arr['contact'];
2298                 } else {
2299                         $ret = Probe::uri($url, $network, $user['uid']);
2300                 }
2301
2302                 if (($network != '') && ($ret['network'] != $network)) {
2303                         Logger::log('Expected network ' . $network . ' does not match actual network ' . $ret['network']);
2304                         return $result;
2305                 }
2306
2307                 // check if we already have a contact
2308                 // the poll url is more reliable than the profile url, as we may have
2309                 // indirect links or webfinger links
2310
2311                 $condition = ['uid' => $user['uid'], 'poll' => [$ret['poll'], Strings::normaliseLink($ret['poll'])], 'network' => $ret['network'], 'pending' => false];
2312                 $contact = DBA::selectFirst('contact', ['id', 'rel'], $condition);
2313                 if (!DBA::isResult($contact)) {
2314                         $condition = ['uid' => $user['uid'], 'nurl' => Strings::normaliseLink($ret['url']), 'network' => $ret['network'], 'pending' => false];
2315                         $contact = DBA::selectFirst('contact', ['id', 'rel'], $condition);
2316                 }
2317
2318                 $protocol = self::getProtocol($ret['url'], $ret['network']);
2319
2320                 if (($protocol === Protocol::DFRN) && !DBA::isResult($contact)) {
2321                         if ($interactive) {
2322                                 if (strlen(DI::baseUrl()->getUrlPath())) {
2323                                         $myaddr = bin2hex(DI::baseUrl() . '/profile/' . $user['nickname']);
2324                                 } else {
2325                                         $myaddr = bin2hex($user['nickname'] . '@' . DI::baseUrl()->getHostname());
2326                                 }
2327
2328                                 DI::baseUrl()->redirect($ret['request'] . "&addr=$myaddr");
2329
2330                                 // NOTREACHED
2331                         }
2332                 } elseif (DI::config()->get('system', 'dfrn_only') && ($ret['network'] != Protocol::DFRN)) {
2333                         $result['message'] = DI::l10n()->t('This site is not configured to allow communications with other networks.') . EOL;
2334                         $result['message'] .= DI::l10n()->t('No compatible communication protocols or feeds were discovered.') . EOL;
2335                         return $result;
2336                 }
2337
2338                 // This extra param just confuses things, remove it
2339                 if ($protocol === Protocol::DIASPORA) {
2340                         $ret['url'] = str_replace('?absolute=true', '', $ret['url']);
2341                 }
2342
2343                 // do we have enough information?
2344                 if (empty($protocol) || ($protocol == Protocol::PHANTOM) || (empty($ret['url']) && empty($ret['addr']))) {
2345                         $result['message'] .= DI::l10n()->t('The profile address specified does not provide adequate information.') . EOL;
2346                         if (empty($ret['poll'])) {
2347                                 $result['message'] .= DI::l10n()->t('No compatible communication protocols or feeds were discovered.') . EOL;
2348                         }
2349                         if (empty($ret['name'])) {
2350                                 $result['message'] .= DI::l10n()->t('An author or name was not found.') . EOL;
2351                         }
2352                         if (empty($ret['url'])) {
2353                                 $result['message'] .= DI::l10n()->t('No browser URL could be matched to this address.') . EOL;
2354                         }
2355                         if (strpos($ret['url'], '@') !== false) {
2356                                 $result['message'] .= DI::l10n()->t('Unable to match @-style Identity Address with a known protocol or email contact.') . EOL;
2357                                 $result['message'] .= DI::l10n()->t('Use mailto: in front of address to force email check.') . EOL;
2358                         }
2359                         return $result;
2360                 }
2361
2362                 if ($protocol === Protocol::OSTATUS && DI::config()->get('system', 'ostatus_disabled')) {
2363                         $result['message'] .= DI::l10n()->t('The profile address specified belongs to a network which has been disabled on this site.') . EOL;
2364                         $ret['notify'] = '';
2365                 }
2366
2367                 if (!$ret['notify']) {
2368                         $result['message'] .= DI::l10n()->t('Limited profile. This person will be unable to receive direct/personal notifications from you.') . EOL;
2369                 }
2370
2371                 $writeable = ((($protocol === Protocol::OSTATUS) && ($ret['notify'])) ? 1 : 0);
2372
2373                 $subhub = (($protocol === Protocol::OSTATUS) ? true : false);
2374
2375                 $hidden = (($protocol === Protocol::MAIL) ? 1 : 0);
2376
2377                 $pending = false;
2378                 if (($protocol == Protocol::ACTIVITYPUB) && isset($ret['manually-approve'])) {
2379                         $pending = (bool)$ret['manually-approve'];
2380                 }
2381
2382                 if (in_array($protocol, [Protocol::MAIL, Protocol::DIASPORA, Protocol::ACTIVITYPUB])) {
2383                         $writeable = 1;
2384                 }
2385
2386                 if (DBA::isResult($contact)) {
2387                         // update contact
2388                         $new_relation = (($contact['rel'] == self::FOLLOWER) ? self::FRIEND : self::SHARING);
2389
2390                         $fields = ['rel' => $new_relation, 'subhub' => $subhub, 'readonly' => false];
2391                         DBA::update('contact', $fields, ['id' => $contact['id']]);
2392                 } else {
2393                         $new_relation = (in_array($protocol, [Protocol::MAIL]) ? self::FRIEND : self::SHARING);
2394
2395                         // create contact record
2396                         self::insert([
2397                                 'uid'     => $user['uid'],
2398                                 'created' => DateTimeFormat::utcNow(),
2399                                 'url'     => $ret['url'],
2400                                 'nurl'    => Strings::normaliseLink($ret['url']),
2401                                 'addr'    => $ret['addr'],
2402                                 'alias'   => $ret['alias'],
2403                                 'batch'   => $ret['batch'],
2404                                 'notify'  => $ret['notify'],
2405                                 'poll'    => $ret['poll'],
2406                                 'poco'    => $ret['poco'],
2407                                 'name'    => $ret['name'],
2408                                 'nick'    => $ret['nick'],
2409                                 'network' => $ret['network'],
2410                                 'baseurl' => $ret['baseurl'],
2411                                 'gsid'    => $ret['gsid'] ?? null,
2412                                 'protocol' => $protocol,
2413                                 'pubkey'  => $ret['pubkey'],
2414                                 'rel'     => $new_relation,
2415                                 'priority'=> $ret['priority'],
2416                                 'writable'=> $writeable,
2417                                 'hidden'  => $hidden,
2418                                 'blocked' => 0,
2419                                 'readonly'=> 0,
2420                                 'pending' => $pending,
2421                                 'subhub'  => $subhub
2422                         ]);
2423                 }
2424
2425                 $contact = DBA::selectFirst('contact', [], ['url' => $ret['url'], 'network' => $ret['network'], 'uid' => $user['uid']]);
2426                 if (!DBA::isResult($contact)) {
2427                         $result['message'] .= DI::l10n()->t('Unable to retrieve contact information.') . EOL;
2428                         return $result;
2429                 }
2430
2431                 $contact_id = $contact['id'];
2432                 $result['cid'] = $contact_id;
2433
2434                 Group::addMember(User::getDefaultGroup($user['uid'], $contact["network"]), $contact_id);
2435
2436                 // Update the avatar
2437                 self::updateAvatar($contact_id, $ret['photo']);
2438
2439                 // pull feed and consume it, which should subscribe to the hub.
2440                 if ($contact['network'] == Protocol::OSTATUS) {
2441                         Worker::add(PRIORITY_HIGH, 'OnePoll', $contact_id, 'force');
2442                 } else {
2443                         Worker::add(PRIORITY_HIGH, 'UpdateContact', $contact_id);
2444                 }
2445
2446                 $owner = User::getOwnerDataById($user['uid']);
2447
2448                 if (DBA::isResult($owner)) {
2449                         if (in_array($protocol, [Protocol::OSTATUS, Protocol::DFRN])) {
2450                                 // create a follow slap
2451                                 $item = [];
2452                                 $item['verb'] = Activity::FOLLOW;
2453                                 $item['gravity'] = GRAVITY_ACTIVITY;
2454                                 $item['follow'] = $contact["url"];
2455                                 $item['body'] = '';
2456                                 $item['title'] = '';
2457                                 $item['guid'] = '';
2458                                 $item['uri-id'] = 0;
2459
2460                                 $slap = OStatus::salmon($item, $owner);
2461
2462                                 if (!empty($contact['notify'])) {
2463                                         Salmon::slapper($owner, $contact['notify'], $slap);
2464                                 }
2465                         } elseif ($protocol == Protocol::DIASPORA) {
2466                                 $ret = Diaspora::sendShare($owner, $contact);
2467                                 Logger::log('share returns: ' . $ret);
2468                         } elseif ($protocol == Protocol::ACTIVITYPUB) {
2469                                 $activity_id = ActivityPub\Transmitter::activityIDFromContact($contact_id);
2470                                 if (empty($activity_id)) {
2471                                         // This really should never happen
2472                                         return false;
2473                                 }
2474
2475                                 $ret = ActivityPub\Transmitter::sendActivity('Follow', $contact['url'], $user['uid'], $activity_id);
2476                                 Logger::log('Follow returns: ' . $ret);
2477                         }
2478                 }
2479
2480                 $result['success'] = true;
2481                 return $result;
2482         }
2483
2484         /**
2485          * Updated contact's SSL policy
2486          *
2487          * @param array  $contact    Contact array
2488          * @param string $new_policy New policy, valid: self,full
2489          *
2490          * @return array Contact array with updated values
2491          * @throws \Exception
2492          */
2493         public static function updateSslPolicy(array $contact, $new_policy)
2494         {
2495                 $ssl_changed = false;
2496                 if ((intval($new_policy) == BaseURL::SSL_POLICY_SELFSIGN || $new_policy === 'self') && strstr($contact['url'], 'https:')) {
2497                         $ssl_changed = true;
2498                         $contact['url']     =   str_replace('https:', 'http:', $contact['url']);
2499                         $contact['request'] =   str_replace('https:', 'http:', $contact['request']);
2500                         $contact['notify']  =   str_replace('https:', 'http:', $contact['notify']);
2501                         $contact['poll']    =   str_replace('https:', 'http:', $contact['poll']);
2502                         $contact['confirm'] =   str_replace('https:', 'http:', $contact['confirm']);
2503                         $contact['poco']    =   str_replace('https:', 'http:', $contact['poco']);
2504                 }
2505
2506                 if ((intval($new_policy) == BaseURL::SSL_POLICY_FULL || $new_policy === 'full') && strstr($contact['url'], 'http:')) {
2507                         $ssl_changed = true;
2508                         $contact['url']     =   str_replace('http:', 'https:', $contact['url']);
2509                         $contact['request'] =   str_replace('http:', 'https:', $contact['request']);
2510                         $contact['notify']  =   str_replace('http:', 'https:', $contact['notify']);
2511                         $contact['poll']    =   str_replace('http:', 'https:', $contact['poll']);
2512                         $contact['confirm'] =   str_replace('http:', 'https:', $contact['confirm']);
2513                         $contact['poco']    =   str_replace('http:', 'https:', $contact['poco']);
2514                 }
2515
2516                 if ($ssl_changed) {
2517                         $fields = ['url' => $contact['url'], 'request' => $contact['request'],
2518                                         'notify' => $contact['notify'], 'poll' => $contact['poll'],
2519                                         'confirm' => $contact['confirm'], 'poco' => $contact['poco']];
2520                         DBA::update('contact', $fields, ['id' => $contact['id']]);
2521                 }
2522
2523                 return $contact;
2524         }
2525
2526         /**
2527          * Follow a contact
2528          *
2529          * @param int $cid Public contact id
2530          * @param int $uid  User ID
2531          *
2532          * @return bool "true" if following had been successful
2533          */
2534         public static function follow(int $cid, int $uid)
2535         {
2536                 $user = User::getById($uid);
2537                 if (empty($user)) {
2538                         return false;
2539                 }
2540
2541                 $contact = self::getById($cid, ['url']);
2542
2543                 $result = self::createFromProbe($user, $contact['url'], false);
2544
2545                 return $result['cid'];
2546         }
2547
2548         /**
2549          * Unfollow a contact
2550          *
2551          * @param int $cid Public contact id
2552          * @param int $uid  User ID
2553          *
2554          * @return bool "true" if unfollowing had been successful
2555          */
2556         public static function unfollow(int $cid, int $uid)
2557         {
2558                 $cdata = self::getPublicAndUserContacID($cid, $uid);
2559                 if (empty($cdata['user'])) {
2560                         return false;
2561                 }
2562
2563                 $contact = self::getById($cdata['user']);
2564
2565                 self::removeSharer([], $contact);
2566
2567                 return true;
2568         }
2569
2570         /**
2571          * @param array  $importer Owner (local user) data
2572          * @param array  $contact  Existing owner-specific contact data we want to expand the relationship with. Optional.
2573          * @param array  $datarray An item-like array with at least the 'author-id' and 'author-url' keys for the contact. Mandatory.
2574          * @param bool   $sharing  True: Contact is now sharing with Owner; False: Contact is now following Owner (default)
2575          * @param string $note     Introduction additional message
2576          * @return bool|null True: follow request is accepted; False: relationship is rejected; Null: relationship is pending
2577          * @throws HTTPException\InternalServerErrorException
2578          * @throws \ImagickException
2579          */
2580         public static function addRelationship(array $importer, array $contact, array $datarray, $sharing = false, $note = '')
2581         {
2582                 // Should always be set
2583                 if (empty($datarray['author-id'])) {
2584                         return false;
2585                 }
2586
2587                 $fields = ['url', 'name', 'nick', 'avatar', 'photo', 'network', 'blocked'];
2588                 $pub_contact = DBA::selectFirst('contact', $fields, ['id' => $datarray['author-id']]);
2589                 if (!DBA::isResult($pub_contact)) {
2590                         // Should never happen
2591                         return false;
2592                 }
2593
2594                 // Contact is blocked at node-level
2595                 if (self::isBlocked($datarray['author-id'])) {
2596                         return false;
2597                 }
2598
2599                 $url = ($datarray['author-link'] ?? '') ?: $pub_contact['url'];
2600                 $name = $pub_contact['name'];
2601                 $photo = ($pub_contact['avatar'] ?? '') ?: $pub_contact["photo"];
2602                 $nick = $pub_contact['nick'];
2603                 $network = $pub_contact['network'];
2604
2605                 // Ensure that we don't create a new contact when there already is one
2606                 $cid = self::getIdForURL($url, $importer['uid']);
2607                 if (!empty($cid)) {
2608                         $contact = DBA::selectFirst('contact', [], ['id' => $cid]);
2609                 }
2610
2611                 if (!empty($contact)) {
2612                         if (!empty($contact['pending'])) {
2613                                 Logger::info('Pending contact request already exists.', ['url' => $url, 'uid' => $importer['uid']]);
2614                                 return null;
2615                         }
2616
2617                         // Contact is blocked at user-level
2618                         if (!empty($contact['id']) && !empty($importer['id']) &&
2619                                 Contact\User::isBlocked($contact['id'], $importer['id'])) {
2620                                 return false;
2621                         }
2622
2623                         // Make sure that the existing contact isn't archived
2624                         self::unmarkForArchival($contact);
2625
2626                         if (($contact['rel'] == self::SHARING)
2627                                 || ($sharing && $contact['rel'] == self::FOLLOWER)) {
2628                                 DBA::update('contact', ['rel' => self::FRIEND, 'writable' => true, 'pending' => false],
2629                                                 ['id' => $contact['id'], 'uid' => $importer['uid']]);
2630                         }
2631
2632                         // Ensure to always have the correct network type, independent from the connection request method
2633                         self::updateFromProbe($contact['id']);
2634
2635                         Post\UserNotification::insertNotication($contact['id'], Verb::getID(Activity::FOLLOW), $importer['uid']);
2636
2637                         return true;
2638                 } else {
2639                         // send email notification to owner?
2640                         if (DBA::exists('contact', ['nurl' => Strings::normaliseLink($url), 'uid' => $importer['uid'], 'pending' => true])) {
2641                                 Logger::log('ignoring duplicated connection request from pending contact ' . $url);
2642                                 return null;
2643                         }
2644
2645                         // create contact record
2646                         DBA::insert('contact', [
2647                                 'uid'      => $importer['uid'],
2648                                 'created'  => DateTimeFormat::utcNow(),
2649                                 'url'      => $url,
2650                                 'nurl'     => Strings::normaliseLink($url),
2651                                 'name'     => $name,
2652                                 'nick'     => $nick,
2653                                 'network'  => $network,
2654                                 'rel'      => self::FOLLOWER,
2655                                 'blocked'  => 0,
2656                                 'readonly' => 0,
2657                                 'pending'  => 1,
2658                                 'writable' => 1,
2659                         ]);
2660
2661                         $contact_id = DBA::lastInsertId();
2662
2663                         // Ensure to always have the correct network type, independent from the connection request method
2664                         self::updateFromProbe($contact_id);
2665
2666                         self::updateAvatar($contact_id, $photo, true);
2667
2668                         Post\UserNotification::insertNotication($contact_id, Verb::getID(Activity::FOLLOW), $importer['uid']);
2669
2670                         $contact_record = DBA::selectFirst('contact', ['id', 'network', 'name', 'url', 'photo'], ['id' => $contact_id]);
2671
2672                         /// @TODO Encapsulate this into a function/method
2673                         $fields = ['uid', 'username', 'email', 'page-flags', 'notify-flags', 'language'];
2674                         $user = DBA::selectFirst('user', $fields, ['uid' => $importer['uid']]);
2675                         if (DBA::isResult($user) && !in_array($user['page-flags'], [User::PAGE_FLAGS_SOAPBOX, User::PAGE_FLAGS_FREELOVE, User::PAGE_FLAGS_COMMUNITY])) {
2676                                 // create notification
2677                                 $hash = Strings::getRandomHex();
2678
2679                                 if (is_array($contact_record)) {
2680                                         DBA::insert('intro', ['uid' => $importer['uid'], 'contact-id' => $contact_record['id'],
2681                                                                 'blocked' => false, 'knowyou' => false, 'note' => $note,
2682                                                                 'hash' => $hash, 'datetime' => DateTimeFormat::utcNow()]);
2683                                 }
2684
2685                                 Group::addMember(User::getDefaultGroup($importer['uid'], $contact_record["network"]), $contact_record['id']);
2686
2687                                 if (($user['notify-flags'] & Notification\Type::INTRO) &&
2688                                         in_array($user['page-flags'], [User::PAGE_FLAGS_NORMAL])) {
2689
2690                                         notification([
2691                                                 'type'  => Notification\Type::INTRO,
2692                                                 'otype' => Notification\ObjectType::INTRO,
2693                                                 'verb'  => ($sharing ? Activity::FRIEND : Activity::FOLLOW),
2694                                                 'uid'   => $user['uid'],
2695                                                 'cid'   => $contact_record['id'],
2696                                                 'link'  => DI::baseUrl() . '/notifications/intros',
2697                                         ]);
2698                                 }
2699                         } elseif (DBA::isResult($user) && in_array($user['page-flags'], [User::PAGE_FLAGS_SOAPBOX, User::PAGE_FLAGS_FREELOVE, User::PAGE_FLAGS_COMMUNITY])) {
2700                                 if (($user['page-flags'] == User::PAGE_FLAGS_FREELOVE) && ($network != Protocol::DIASPORA)) {
2701                                         self::createFromProbe($importer, $url, false, $network);
2702                                 }
2703
2704                                 $condition = ['uid' => $importer['uid'], 'url' => $url, 'pending' => true];
2705                                 $fields = ['pending' => false];
2706                                 if ($user['page-flags'] == User::PAGE_FLAGS_FREELOVE) {
2707                                         $fields['rel'] = self::FRIEND;
2708                                 }
2709
2710                                 DBA::update('contact', $fields, $condition);
2711
2712                                 return true;
2713                         }
2714                 }
2715
2716                 return null;
2717         }
2718
2719         public static function removeFollower($importer, $contact)
2720         {
2721                 if (($contact['rel'] == self::FRIEND) || ($contact['rel'] == self::SHARING)) {
2722                         DBA::update('contact', ['rel' => self::SHARING], ['id' => $contact['id']]);
2723                 } else {
2724                         self::remove($contact['id']);
2725                 }
2726         }
2727
2728         public static function removeSharer($importer, $contact)
2729         {
2730                 if (($contact['rel'] == self::FRIEND) || ($contact['rel'] == self::FOLLOWER)) {
2731                         DBA::update('contact', ['rel' => self::FOLLOWER], ['id' => $contact['id']]);
2732                 } else {
2733                         self::remove($contact['id']);
2734                 }
2735         }
2736
2737         /**
2738          * Create a birthday event.
2739          *
2740          * Update the year and the birthday.
2741          */
2742         public static function updateBirthdays()
2743         {
2744                 $condition = [
2745                         '`bd` > ?
2746                         AND (`contact`.`rel` = ? OR `contact`.`rel` = ?)
2747                         AND NOT `contact`.`pending`
2748                         AND NOT `contact`.`hidden`
2749                         AND NOT `contact`.`blocked`
2750                         AND NOT `contact`.`archive`
2751                         AND NOT `contact`.`deleted`',
2752                         DBA::NULL_DATE,
2753                         self::SHARING,
2754                         self::FRIEND
2755                 ];
2756
2757                 $contacts = DBA::select('contact', ['id', 'uid', 'name', 'url', 'bd'], $condition);
2758
2759                 while ($contact = DBA::fetch($contacts)) {
2760                         Logger::log('update_contact_birthday: ' . $contact['bd']);
2761
2762                         $nextbd = DateTimeFormat::utcNow('Y') . substr($contact['bd'], 4);
2763
2764                         if (Event::createBirthday($contact, $nextbd)) {
2765                                 // update bdyear
2766                                 DBA::update(
2767                                         'contact',
2768                                         ['bdyear' => substr($nextbd, 0, 4), 'bd' => $nextbd],
2769                                         ['id' => $contact['id']]
2770                                 );
2771                         }
2772                 }
2773                 DBA::close($contacts);
2774         }
2775
2776         /**
2777          * Remove the unavailable contact ids from the provided list
2778          *
2779          * @param array $contact_ids Contact id list
2780          * @return array
2781          * @throws \Exception
2782          */
2783         public static function pruneUnavailable(array $contact_ids)
2784         {
2785                 if (empty($contact_ids)) {
2786                         return [];
2787                 }
2788
2789                 $contacts = self::selectToArray(['id'], [
2790                         'id'      => $contact_ids,
2791                         'blocked' => false,
2792                         'pending' => false,
2793                         'archive' => false,
2794                 ]);
2795
2796                 return array_column($contacts, 'id');
2797         }
2798
2799         /**
2800          * Returns a magic link to authenticate remote visitors
2801          *
2802          * @todo  check if the return is either a fully qualified URL or a relative path to Friendica basedir
2803          *
2804          * @param string $contact_url The address of the target contact profile
2805          * @param string $url         An url that we will be redirected to after the authentication
2806          *
2807          * @return string with "redir" link
2808          * @throws HTTPException\InternalServerErrorException
2809          * @throws \ImagickException
2810          */
2811         public static function magicLink($contact_url, $url = '')
2812         {
2813                 if (!Session::isAuthenticated()) {
2814                         return $url ?: $contact_url; // Equivalent to: ($url != '') ? $url : $contact_url;
2815                 }
2816
2817                 $contact = self::getByURL($contact_url, false);
2818                 if (empty($contact)) {
2819                         return $url ?: $contact_url; // Equivalent to: ($url != '') ? $url : $contact_url;
2820                 }
2821
2822                 // Prevents endless loop in case only a non-public contact exists for the contact URL
2823                 unset($contact['uid']);
2824
2825                 return self::magicLinkByContact($contact, $url ?: $contact_url);
2826         }
2827
2828         /**
2829          * Returns a magic link to authenticate remote visitors
2830          *
2831          * @param integer $cid The contact id of the target contact profile
2832          * @param string  $url An url that we will be redirected to after the authentication
2833          *
2834          * @return string with "redir" link
2835          * @throws HTTPException\InternalServerErrorException
2836          * @throws \ImagickException
2837          */
2838         public static function magicLinkById($cid, $url = '')
2839         {
2840                 $contact = DBA::selectFirst('contact', ['id', 'network', 'url', 'uid'], ['id' => $cid]);
2841
2842                 return self::magicLinkByContact($contact, $url);
2843         }
2844
2845         /**
2846          * Returns a magic link to authenticate remote visitors
2847          *
2848          * @param array  $contact The contact array with "uid", "network" and "url"
2849          * @param string $url     An url that we will be redirected to after the authentication
2850          *
2851          * @return string with "redir" link
2852          * @throws HTTPException\InternalServerErrorException
2853          * @throws \ImagickException
2854          */
2855         public static function magicLinkByContact($contact, $url = '')
2856         {
2857                 $destination = $url ?: $contact['url']; // Equivalent to ($url != '') ? $url : $contact['url'];
2858
2859                 if (!Session::isAuthenticated()) {
2860                         return $destination;
2861                 }
2862
2863                 // Only redirections to the same host do make sense
2864                 if (($url != '') && (parse_url($url, PHP_URL_HOST) != parse_url($contact['url'], PHP_URL_HOST))) {
2865                         return $url;
2866                 }
2867
2868                 if (DI::pConfig()->get(local_user(), 'system', 'stay_local') && ($url == '')) {
2869                         return 'contact/' . $contact['id'] . '/conversations';
2870                 }
2871
2872                 if (!empty($contact['network']) && $contact['network'] != Protocol::DFRN) {
2873                         return $destination;
2874                 }
2875
2876                 if (empty($contact['id'])) {
2877                         return $destination;
2878                 }
2879
2880                 $redirect = 'redir/' . $contact['id'];
2881
2882                 if (($url != '') && !Strings::compareLink($contact['url'], $url)) {
2883                         $redirect .= '?url=' . $url;
2884                 }
2885
2886                 return $redirect;
2887         }
2888
2889         /**
2890          * Is the contact a forum?
2891          *
2892          * @param integer $contactid ID of the contact
2893          *
2894          * @return boolean "true" if it is a forum
2895          */
2896         public static function isForum($contactid)
2897         {
2898                 $fields = ['forum', 'prv'];
2899                 $condition = ['id' => $contactid];
2900                 $contact = DBA::selectFirst('contact', $fields, $condition);
2901                 if (!DBA::isResult($contact)) {
2902                         return false;
2903                 }
2904
2905                 // Is it a forum?
2906                 return ($contact['forum'] || $contact['prv']);
2907         }
2908
2909         /**
2910          * Can the remote contact receive private messages?
2911          *
2912          * @param array $contact
2913          * @return bool
2914          */
2915         public static function canReceivePrivateMessages(array $contact)
2916         {
2917                 $protocol = $contact['network'] ?? $contact['protocol'] ?? Protocol::PHANTOM;
2918                 $self = $contact['self'] ?? false;
2919
2920                 return in_array($protocol, [Protocol::DFRN, Protocol::DIASPORA, Protocol::ACTIVITYPUB]) && !$self;
2921         }
2922
2923         /**
2924          * Search contact table by nick or name
2925          *
2926          * @param string $search Name or nick
2927          * @param string $mode   Search mode (e.g. "community")
2928          * @param int    $uid    User ID
2929          *
2930          * @return array with search results
2931          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2932          */
2933         public static function searchByName(string $search, string $mode = '', int $uid = 0)
2934         {
2935                 if (empty($search)) {
2936                         return [];
2937                 }
2938
2939                 // check supported networks
2940                 if (DI::config()->get('system', 'diaspora_enabled')) {
2941                         $diaspora = Protocol::DIASPORA;
2942                 } else {
2943                         $diaspora = Protocol::DFRN;
2944                 }
2945
2946                 if (!DI::config()->get('system', 'ostatus_disabled')) {
2947                         $ostatus = Protocol::OSTATUS;
2948                 } else {
2949                         $ostatus = Protocol::DFRN;
2950                 }
2951
2952                 // check if we search only communities or every contact
2953                 if ($mode === 'community') {
2954                         $extra_sql = sprintf(' AND `contact-type` = %d', self::TYPE_COMMUNITY);
2955                 } else {
2956                         $extra_sql = '';
2957                 }
2958
2959                 $search .= '%';
2960
2961                 $results = DBA::p("SELECT * FROM `contact`
2962                         WHERE NOT `unsearchable` AND `network` IN (?, ?, ?, ?) AND
2963                                 NOT `failed` AND `uid` = ? AND
2964                                 (`addr` LIKE ? OR `name` LIKE ? OR `nick` LIKE ?) $extra_sql
2965                                 ORDER BY `nurl` DESC LIMIT 1000",
2966                         Protocol::DFRN, Protocol::ACTIVITYPUB, $ostatus, $diaspora, $uid, $search, $search, $search
2967                 );
2968
2969                 $contacts = DBA::toArray($results);
2970                 return $contacts;
2971         }
2972
2973         /**
2974          * Add public contacts from an array
2975          *
2976          * @param array $urls
2977          * @return array result "count", "added" and "updated"
2978          */
2979         public static function addByUrls(array $urls)
2980         {
2981                 $added = 0;
2982                 $updated = 0;
2983                 $unchanged = 0;
2984                 $count = 0;
2985
2986                 foreach ($urls as $url) {
2987                         if (empty($url) || !is_string($url)) {
2988                                 continue;
2989                         }
2990                         $contact = self::getByURL($url, false, ['id', 'updated']);
2991                         if (empty($contact['id'])) {
2992                                 Worker::add(PRIORITY_LOW, 'AddContact', 0, $url);
2993                                 ++$added;
2994                         } elseif ($contact['updated'] < DateTimeFormat::utc('now -7 days')) {
2995                                 Worker::add(PRIORITY_LOW, 'UpdateContact', $contact['id']);
2996                                 ++$updated;
2997                         } else {
2998                                 ++$unchanged;
2999                         }
3000                         ++$count;
3001                 }
3002
3003                 return ['count' => $count, 'added' => $added, 'updated' => $updated, 'unchanged' => $unchanged];
3004         }
3005
3006         /**
3007          * Returns a random, global contact array of the current node
3008          *
3009          * @return array The profile array
3010          * @throws Exception
3011          */
3012         public static function getRandomContact()
3013         {
3014                 $contact = DBA::selectFirst('contact', ['id', 'network', 'url', 'uid'], [
3015                         "`uid` = ? AND `network` = ? AND NOT `failed` AND `last-item` > ?",
3016                         0, Protocol::DFRN, DateTimeFormat::utc('now - 1 month'),
3017                 ], ['order' => ['RAND()']]);
3018
3019                 if (DBA::isResult($contact)) {
3020                         return $contact;
3021                 }
3022
3023                 return [];
3024         }
3025 }