src/Model/Contact.php

   1 <?php
   2 /**
   3  * @file src/Model/Contact.php
   4  */
   5 namespace Friendica\Model;
   6
   7 use Friendica\App\BaseURL;
   8 use Friendica\BaseObject;
   9 use Friendica\Content\Pager;
  10 use Friendica\Core\Config;
  11 use Friendica\Core\Hook;
  12 use Friendica\Core\L10n;
  13 use Friendica\Core\Logger;
  14 use Friendica\Core\Protocol;
  15 use Friendica\Core\Session;
  16 use Friendica\Core\System;
  17 use Friendica\Core\Worker;
  18 use Friendica\Database\DBA;
  19 use Friendica\Network\Probe;
  20 use Friendica\Object\Image;
  21 use Friendica\Protocol\Activity;
  22 use Friendica\Protocol\ActivityPub;
  23 use Friendica\Protocol\DFRN;
  24 use Friendica\Protocol\Diaspora;
  25 use Friendica\Protocol\OStatus;
  26 use Friendica\Protocol\Salmon;
  27 use Friendica\Util\DateTimeFormat;
  28 use Friendica\Util\Images;
  29 use Friendica\Util\Network;
  30 use Friendica\Util\Strings;
  31
  32 /**
  33  * @brief functions for interacting with a contact
  34  */
  35 class Contact extends BaseObject
  36 {
  37         /**
  38          * @deprecated since version 2019.03
  39          * @see User::PAGE_FLAGS_NORMAL
  40          */
  41         const PAGE_NORMAL    = User::PAGE_FLAGS_NORMAL;
  42         /**
  43          * @deprecated since version 2019.03
  44          * @see User::PAGE_FLAGS_SOAPBOX
  45          */
  46         const PAGE_SOAPBOX   = User::PAGE_FLAGS_SOAPBOX;
  47         /**
  48          * @deprecated since version 2019.03
  49          * @see User::PAGE_FLAGS_COMMUNITY
  50          */
  51         const PAGE_COMMUNITY = User::PAGE_FLAGS_COMMUNITY;
  52         /**
  53          * @deprecated since version 2019.03
  54          * @see User::PAGE_FLAGS_FREELOVE
  55          */
  56         const PAGE_FREELOVE  = User::PAGE_FLAGS_FREELOVE;
  57         /**
  58          * @deprecated since version 2019.03
  59          * @see User::PAGE_FLAGS_BLOG
  60          */
  61         const PAGE_BLOG      = User::PAGE_FLAGS_BLOG;
  62         /**
  63          * @deprecated since version 2019.03
  64          * @see User::PAGE_FLAGS_PRVGROUP
  65          */
  66         const PAGE_PRVGROUP  = User::PAGE_FLAGS_PRVGROUP;
  67         /**
  68          * @}
  69          */
  70
  71         /**
  72          * Account types
  73          *
  74          * TYPE_UNKNOWN - the account has been imported from gcontact where this is the default type value
  75          *
  76          * TYPE_PERSON - the account belongs to a person
  77          *      Associated page types: PAGE_NORMAL, PAGE_SOAPBOX, PAGE_FREELOVE
  78          *
  79          * TYPE_ORGANISATION - the account belongs to an organisation
  80          *      Associated page type: PAGE_SOAPBOX
  81          *
  82          * TYPE_NEWS - the account is a news reflector
  83          *      Associated page type: PAGE_SOAPBOX
  84          *
  85          * TYPE_COMMUNITY - the account is community forum
  86          *      Associated page types: PAGE_COMMUNITY, PAGE_PRVGROUP
  87          *
  88          * TYPE_RELAY - the account is a relay
  89          *      This will only be assigned to contacts, not to user accounts
  90          * @{
  91          */
  92         const TYPE_UNKNOWN =     -1;
  93         const TYPE_PERSON =       User::ACCOUNT_TYPE_PERSON;
  94         const TYPE_ORGANISATION = User::ACCOUNT_TYPE_ORGANISATION;
  95         const TYPE_NEWS =         User::ACCOUNT_TYPE_NEWS;
  96         const TYPE_COMMUNITY =    User::ACCOUNT_TYPE_COMMUNITY;
  97         const TYPE_RELAY =        User::ACCOUNT_TYPE_RELAY;
  98         /**
  99          * @}
 100          */
 101
 102         /**
 103          * Contact_is
 104          *
 105          * Relationship types
 106          * @{
 107          */
 108         const FOLLOWER = 1;
 109         const SHARING  = 2;
 110         const FRIEND   = 3;
 111         /**
 112          * @}
 113          */
 114
 115         /**
 116          * @param array $fields    Array of selected fields, empty for all
 117          * @param array $condition Array of fields for condition
 118          * @param array $params    Array of several parameters
 119          * @return array
 120          * @throws \Exception
 121          */
 122         public static function selectToArray(array $fields = [], array $condition = [], array $params = [])
 123         {
 124                 return DBA::selectToArray('contact', $fields, $condition, $params);
 125         }
 126
 127         /**
 128          * @param array $fields    Array of selected fields, empty for all
 129          * @param array $condition Array of fields for condition
 130          * @param array $params    Array of several parameters
 131          * @return array
 132          * @throws \Exception
 133          */
 134         public static function selectFirst(array $fields = [], array $condition = [], array $params = [])
 135         {
 136                 $contact = DBA::selectFirst('contact', $fields, $condition, $params);
 137
 138                 return $contact;
 139         }
 140
 141         /**
 142          * Insert a row into the contact table
 143          * Important: You can't use DBA::lastInsertId() after this call since it will be set to 0.
 144          *
 145          * @param array        $fields              field array
 146          * @param bool         $on_duplicate_update Do an update on a duplicate entry
 147          *
 148          * @return boolean was the insert successful?
 149          * @throws \Exception
 150          */
 151         public static function insert(array $fields, bool $on_duplicate_update = false)
 152         {
 153                 $ret = DBA::insert('contact', $fields, $on_duplicate_update);
 154                 $contact = DBA::selectFirst('contact', ['nurl', 'uid'], ['id' => DBA::lastInsertId()]);
 155                 if (!DBA::isResult($contact)) {
 156                         // Shouldn't happen
 157                         return $ret;
 158                 }
 159
 160                 // Search for duplicated contacts and get rid of them
 161                 self::removeDuplicates($contact['nurl'], $contact['uid']);
 162
 163                 return $ret;
 164         }
 165
 166         /**
 167          * @param integer $id     Contact ID
 168          * @param array   $fields Array of selected fields, empty for all
 169          * @return array|boolean Contact record if it exists, false otherwise
 170          * @throws \Exception
 171          */
 172         public static function getById($id, $fields = [])
 173         {
 174                 return DBA::selectFirst('contact', $fields, ['id' => $id]);
 175         }
 176
 177         /**
 178          * @brief Tests if the given contact is a follower
 179          *
 180          * @param int $cid Either public contact id or user's contact id
 181          * @param int $uid User ID
 182          *
 183          * @return boolean is the contact id a follower?
 184          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 185          * @throws \ImagickException
 186          */
 187         public static function isFollower($cid, $uid)
 188         {
 189                 if (self::isBlockedByUser($cid, $uid)) {
 190                         return false;
 191                 }
 192
 193                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 194                 if (empty($cdata['user'])) {
 195                         return false;
 196                 }
 197
 198                 $condition = ['id' => $cdata['user'], 'rel' => [self::FOLLOWER, self::FRIEND]];
 199                 return DBA::exists('contact', $condition);
 200         }
 201
 202         /**
 203          * @brief Tests if the given contact url is a follower
 204          *
 205          * @param string $url Contact URL
 206          * @param int    $uid User ID
 207          *
 208          * @return boolean is the contact id a follower?
 209          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 210          * @throws \ImagickException
 211          */
 212         public static function isFollowerByURL($url, $uid)
 213         {
 214                 $cid = self::getIdForURL($url, $uid, true);
 215
 216                 if (empty($cid)) {
 217                         return false;
 218                 }
 219
 220                 return self::isFollower($cid, $uid);
 221         }
 222
 223         /**
 224          * @brief Tests if the given user follow the given contact
 225          *
 226          * @param int $cid Either public contact id or user's contact id
 227          * @param int $uid User ID
 228          *
 229          * @return boolean is the contact url being followed?
 230          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 231          * @throws \ImagickException
 232          */
 233         public static function isSharing($cid, $uid)
 234         {
 235                 if (self::isBlockedByUser($cid, $uid)) {
 236                         return false;
 237                 }
 238
 239                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 240                 if (empty($cdata['user'])) {
 241                         return false;
 242                 }
 243
 244                 $condition = ['id' => $cdata['user'], 'rel' => [self::SHARING, self::FRIEND]];
 245                 return DBA::exists('contact', $condition);
 246         }
 247
 248         /**
 249          * @brief Tests if the given user follow the given contact url
 250          *
 251          * @param string $url Contact URL
 252          * @param int    $uid User ID
 253          *
 254          * @return boolean is the contact url being followed?
 255          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 256          * @throws \ImagickException
 257          */
 258         public static function isSharingByURL($url, $uid)
 259         {
 260                 $cid = self::getIdForURL($url, $uid, true);
 261
 262                 if (empty($cid)) {
 263                         return false;
 264                 }
 265
 266                 return self::isSharing($cid, $uid);
 267         }
 268
 269         /**
 270          * @brief Get the basepath for a given contact link
 271          *
 272          * @param string $url The contact link
 273          *
 274          * @return string basepath
 275          * @return boolean $dont_update Don't update the contact
 276          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 277          * @throws \ImagickException
 278          */
 279         public static function getBasepath($url, $dont_update = false)
 280         {
 281                 $contact = DBA::selectFirst('contact', ['baseurl'], ['uid' => 0, 'nurl' => Strings::normaliseLink($url)]);
 282                 if (!empty($contact['baseurl'])) {
 283                         return $contact['baseurl'];
 284                 } elseif ($dont_update) {
 285                         return '';
 286                 }
 287
 288                 self::updateFromProbeByURL($url, true);
 289
 290                 $contact = DBA::selectFirst('contact', ['baseurl'], ['uid' => 0, 'nurl' => Strings::normaliseLink($url)]);
 291                 if (!empty($contact['baseurl'])) {
 292                         return $contact['baseurl'];
 293                 }
 294
 295                 return '';
 296         }
 297
 298         /**
 299          * Check if the given contact url is on the same server
 300          *
 301          * @param string $url The contact link
 302          *
 303          * @return boolean Is it the same server?
 304          */
 305         public static function isLocal($url)
 306         {
 307                 return Strings::compareLink(self::getBasepath($url, true), System::baseUrl());
 308         }
 309
 310         /**
 311          * Returns the public contact id of the given user id
 312          *
 313          * @param  integer $uid User ID
 314          *
 315          * @return integer|boolean Public contact id for given user id
 316          * @throws Exception
 317          */
 318         public static function getPublicIdByUserId($uid)
 319         {
 320                 $self = DBA::selectFirst('contact', ['url'], ['self' => true, 'uid' => $uid]);
 321                 if (!DBA::isResult($self)) {
 322                         return false;
 323                 }
 324                 return self::getIdForURL($self['url'], 0, true);
 325         }
 326
 327         /**
 328          * @brief Returns the contact id for the user and the public contact id for a given contact id
 329          *
 330          * @param int $cid Either public contact id or user's contact id
 331          * @param int $uid User ID
 332          *
 333          * @return array with public and user's contact id
 334          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 335          * @throws \ImagickException
 336          */
 337         public static function getPublicAndUserContacID($cid, $uid)
 338         {
 339                 if (empty($uid) || empty($cid)) {
 340                         return [];
 341                 }
 342
 343                 $contact = DBA::selectFirst('contact', ['id', 'uid', 'url'], ['id' => $cid]);
 344                 if (!DBA::isResult($contact)) {
 345                         return [];
 346                 }
 347
 348                 // We quit when the user id don't match the user id of the provided contact
 349                 if (($contact['uid'] != $uid) && ($contact['uid'] != 0)) {
 350                         return [];
 351                 }
 352
 353                 if ($contact['uid'] != 0) {
 354                         $pcid = Contact::getIdForURL($contact['url'], 0, true, ['url' => $contact['url']]);
 355                         if (empty($pcid)) {
 356                                 return [];
 357                         }
 358                         $ucid = $contact['id'];
 359                 } else {
 360                         $pcid = $contact['id'];
 361                         $ucid = Contact::getIdForURL($contact['url'], $uid, true);
 362                 }
 363
 364                 return ['public' => $pcid, 'user' => $ucid];
 365         }
 366
 367         /**
 368          * Returns contact details for a given contact id in combination with a user id
 369          *
 370          * @param int $cid A contact ID
 371          * @param int $uid The User ID
 372          * @param array $fields The selected fields for the contact
 373          *
 374          * @return array The contact details
 375          *
 376          * @throws \Exception
 377          */
 378         public static function getContactForUser($cid, $uid, array $fields = [])
 379         {
 380                 $contact = DBA::selectFirst('contact', $fields, ['id' => $cid, 'uid' => $uid]);
 381
 382                 if (!DBA::isResult($contact)) {
 383                         return [];
 384                 } else {
 385                         return $contact;
 386                 }
 387         }
 388
 389         /**
 390          * @brief Block contact id for user id
 391          *
 392          * @param int     $cid     Either public contact id or user's contact id
 393          * @param int     $uid     User ID
 394          * @param boolean $blocked Is the contact blocked or unblocked?
 395          * @throws \Exception
 396          */
 397         public static function setBlockedForUser($cid, $uid, $blocked)
 398         {
 399                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 400                 if (empty($cdata)) {
 401                         return;
 402                 }
 403
 404                 if ($cdata['user'] != 0) {
 405                         DBA::update('contact', ['blocked' => $blocked], ['id' => $cdata['user'], 'pending' => false]);
 406                 }
 407
 408                 DBA::update('user-contact', ['blocked' => $blocked], ['cid' => $cdata['public'], 'uid' => $uid], true);
 409         }
 410
 411         /**
 412          * @brief Returns "block" state for contact id and user id
 413          *
 414          * @param int $cid Either public contact id or user's contact id
 415          * @param int $uid User ID
 416          *
 417          * @return boolean is the contact id blocked for the given user?
 418          * @throws \Exception
 419          */
 420         public static function isBlockedByUser($cid, $uid)
 421         {
 422                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 423                 if (empty($cdata)) {
 424                         return;
 425                 }
 426
 427                 $public_blocked = false;
 428
 429                 if (!empty($cdata['public'])) {
 430                         $public_contact = DBA::selectFirst('user-contact', ['blocked'], ['cid' => $cdata['public'], 'uid' => $uid]);
 431                         if (DBA::isResult($public_contact)) {
 432                                 $public_blocked = $public_contact['blocked'];
 433                         }
 434                 }
 435
 436                 $user_blocked = $public_blocked;
 437
 438                 if (!empty($cdata['user'])) {
 439                         $user_contact = DBA::selectFirst('contact', ['blocked'], ['id' => $cdata['user'], 'pending' => false]);
 440                         if (DBA::isResult($user_contact)) {
 441                                 $user_blocked = $user_contact['blocked'];
 442                         }
 443                 }
 444
 445                 if ($user_blocked != $public_blocked) {
 446                         DBA::update('user-contact', ['blocked' => $user_blocked], ['cid' => $cdata['public'], 'uid' => $uid], true);
 447                 }
 448
 449                 return $user_blocked;
 450         }
 451
 452         /**
 453          * @brief Ignore contact id for user id
 454          *
 455          * @param int     $cid     Either public contact id or user's contact id
 456          * @param int     $uid     User ID
 457          * @param boolean $ignored Is the contact ignored or unignored?
 458          * @throws \Exception
 459          */
 460         public static function setIgnoredForUser($cid, $uid, $ignored)
 461         {
 462                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 463                 if (empty($cdata)) {
 464                         return;
 465                 }
 466
 467                 if ($cdata['user'] != 0) {
 468                         DBA::update('contact', ['readonly' => $ignored], ['id' => $cdata['user'], 'pending' => false]);
 469                 }
 470
 471                 DBA::update('user-contact', ['ignored' => $ignored], ['cid' => $cdata['public'], 'uid' => $uid], true);
 472         }
 473
 474         /**
 475          * @brief Returns "ignore" state for contact id and user id
 476          *
 477          * @param int $cid Either public contact id or user's contact id
 478          * @param int $uid User ID
 479          *
 480          * @return boolean is the contact id ignored for the given user?
 481          * @throws \Exception
 482          */
 483         public static function isIgnoredByUser($cid, $uid)
 484         {
 485                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 486                 if (empty($cdata)) {
 487                         return;
 488                 }
 489
 490                 $public_ignored = false;
 491
 492                 if (!empty($cdata['public'])) {
 493                         $public_contact = DBA::selectFirst('user-contact', ['ignored'], ['cid' => $cdata['public'], 'uid' => $uid]);
 494                         if (DBA::isResult($public_contact)) {
 495                                 $public_ignored = $public_contact['ignored'];
 496                         }
 497                 }
 498
 499                 $user_ignored = $public_ignored;
 500
 501                 if (!empty($cdata['user'])) {
 502                         $user_contact = DBA::selectFirst('contact', ['readonly'], ['id' => $cdata['user'], 'pending' => false]);
 503                         if (DBA::isResult($user_contact)) {
 504                                 $user_ignored = $user_contact['readonly'];
 505                         }
 506                 }
 507
 508                 if ($user_ignored != $public_ignored) {
 509                         DBA::update('user-contact', ['ignored' => $user_ignored], ['cid' => $cdata['public'], 'uid' => $uid], true);
 510                 }
 511
 512                 return $user_ignored;
 513         }
 514
 515         /**
 516          * @brief Set "collapsed" for contact id and user id
 517          *
 518          * @param int     $cid       Either public contact id or user's contact id
 519          * @param int     $uid       User ID
 520          * @param boolean $collapsed are the contact's posts collapsed or uncollapsed?
 521          * @throws \Exception
 522          */
 523         public static function setCollapsedForUser($cid, $uid, $collapsed)
 524         {
 525                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 526                 if (empty($cdata)) {
 527                         return;
 528                 }
 529
 530                 DBA::update('user-contact', ['collapsed' => $collapsed], ['cid' => $cdata['public'], 'uid' => $uid], true);
 531         }
 532
 533         /**
 534          * @brief Returns "collapsed" state for contact id and user id
 535          *
 536          * @param int $cid Either public contact id or user's contact id
 537          * @param int $uid User ID
 538          *
 539          * @return boolean is the contact id blocked for the given user?
 540          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 541          * @throws \ImagickException
 542          */
 543         public static function isCollapsedByUser($cid, $uid)
 544         {
 545                 $cdata = self::getPublicAndUserContacID($cid, $uid);
 546                 if (empty($cdata)) {
 547                         return;
 548                 }
 549
 550                 $collapsed = false;
 551
 552                 if (!empty($cdata['public'])) {
 553                         $public_contact = DBA::selectFirst('user-contact', ['collapsed'], ['cid' => $cdata['public'], 'uid' => $uid]);
 554                         if (DBA::isResult($public_contact)) {
 555                                 $collapsed = $public_contact['collapsed'];
 556                         }
 557                 }
 558
 559                 return $collapsed;
 560         }
 561
 562         /**
 563          * @brief Returns a list of contacts belonging in a group
 564          *
 565          * @param int $gid
 566          * @return array
 567          * @throws \Exception
 568          */
 569         public static function getByGroupId($gid)
 570         {
 571                 $return = [];
 572
 573                 if (intval($gid)) {
 574                         $stmt = DBA::p('SELECT `group_member`.`contact-id`, `contact`.*
 575                                 FROM `contact`
 576                                 INNER JOIN `group_member`
 577                                         ON `contact`.`id` = `group_member`.`contact-id`
 578                                 WHERE `gid` = ?
 579                                 AND `contact`.`uid` = ?
 580                                 AND NOT `contact`.`self`
 581                                 AND NOT `contact`.`deleted`
 582                                 AND NOT `contact`.`blocked`
 583                                 AND NOT `contact`.`pending`
 584                                 ORDER BY `contact`.`name` ASC',
 585                                 $gid,
 586                                 local_user()
 587                         );
 588
 589                         if (DBA::isResult($stmt)) {
 590                                 $return = DBA::toArray($stmt);
 591                         }
 592                 }
 593
 594                 return $return;
 595         }
 596
 597         /**
 598          * @brief Returns the count of OStatus contacts in a group
 599          *
 600          * @param int $gid
 601          * @return int
 602          * @throws \Exception
 603          */
 604         public static function getOStatusCountByGroupId($gid)
 605         {
 606                 $return = 0;
 607                 if (intval($gid)) {
 608                         $contacts = DBA::fetchFirst('SELECT COUNT(*) AS `count`
 609                                 FROM `contact`
 610                                 INNER JOIN `group_member`
 611                                         ON `contact`.`id` = `group_member`.`contact-id`
 612                                 WHERE `gid` = ?
 613                                 AND `contact`.`uid` = ?
 614                                 AND `contact`.`network` = ?
 615                                 AND `contact`.`notify` != ""',
 616                                 $gid,
 617                                 local_user(),
 618                                 Protocol::OSTATUS
 619                         );
 620                         $return = $contacts['count'];
 621                 }
 622
 623                 return $return;
 624         }
 625
 626         /**
 627          * Creates the self-contact for the provided user id
 628          *
 629          * @param int $uid
 630          * @return bool Operation success
 631          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 632          */
 633         public static function createSelfFromUserId($uid)
 634         {
 635                 // Only create the entry if it doesn't exist yet
 636                 if (DBA::exists('contact', ['uid' => $uid, 'self' => true])) {
 637                         return true;
 638                 }
 639
 640                 $user = DBA::selectFirst('user', ['uid', 'username', 'nickname'], ['uid' => $uid]);
 641                 if (!DBA::isResult($user)) {
 642                         return false;
 643                 }
 644
 645                 $return = DBA::insert('contact', [
 646                         'uid'         => $user['uid'],
 647                         'created'     => DateTimeFormat::utcNow(),
 648                         'self'        => 1,
 649                         'name'        => $user['username'],
 650                         'nick'        => $user['nickname'],
 651                         'photo'       => System::baseUrl() . '/photo/profile/' . $user['uid'] . '.jpg',
 652                         'thumb'       => System::baseUrl() . '/photo/avatar/'  . $user['uid'] . '.jpg',
 653                         'micro'       => System::baseUrl() . '/photo/micro/'   . $user['uid'] . '.jpg',
 654                         'blocked'     => 0,
 655                         'pending'     => 0,
 656                         'url'         => System::baseUrl() . '/profile/' . $user['nickname'],
 657                         'nurl'        => Strings::normaliseLink(System::baseUrl() . '/profile/' . $user['nickname']),
 658                         'addr'        => $user['nickname'] . '@' . substr(System::baseUrl(), strpos(System::baseUrl(), '://') + 3),
 659                         'request'     => System::baseUrl() . '/dfrn_request/' . $user['nickname'],
 660                         'notify'      => System::baseUrl() . '/dfrn_notify/'  . $user['nickname'],
 661                         'poll'        => System::baseUrl() . '/dfrn_poll/'    . $user['nickname'],
 662                         'confirm'     => System::baseUrl() . '/dfrn_confirm/' . $user['nickname'],
 663                         'poco'        => System::baseUrl() . '/poco/'         . $user['nickname'],
 664                         'name-date'   => DateTimeFormat::utcNow(),
 665                         'uri-date'    => DateTimeFormat::utcNow(),
 666                         'avatar-date' => DateTimeFormat::utcNow(),
 667                         'closeness'   => 0
 668                 ]);
 669
 670                 return $return;
 671         }
 672
 673         /**
 674          * Updates the self-contact for the provided user id
 675          *
 676          * @param int     $uid
 677          * @param boolean $update_avatar Force the avatar update
 678          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 679          */
 680         public static function updateSelfFromUserID($uid, $update_avatar = false)
 681         {
 682                 $fields = ['id', 'name', 'nick', 'location', 'about', 'keywords', 'gender', 'avatar',
 683                         'xmpp', 'contact-type', 'forum', 'prv', 'avatar-date', 'url', 'nurl', 'unsearchable',
 684                         'photo', 'thumb', 'micro', 'addr', 'request', 'notify', 'poll', 'confirm', 'poco'];
 685                 $self = DBA::selectFirst('contact', $fields, ['uid' => $uid, 'self' => true]);
 686                 if (!DBA::isResult($self)) {
 687                         return;
 688                 }
 689
 690                 $fields = ['nickname', 'page-flags', 'account-type', 'hidewall'];
 691                 $user = DBA::selectFirst('user', $fields, ['uid' => $uid]);
 692                 if (!DBA::isResult($user)) {
 693                         return;
 694                 }
 695
 696                 $fields = ['name', 'photo', 'thumb', 'about', 'address', 'locality', 'region',
 697                         'country-name', 'gender', 'pub_keywords', 'xmpp', 'net-publish'];
 698                 $profile = DBA::selectFirst('profile', $fields, ['uid' => $uid, 'is-default' => true]);
 699                 if (!DBA::isResult($profile)) {
 700                         return;
 701                 }
 702
 703                 $file_suffix = 'jpg';
 704
 705                 $fields = ['name' => $profile['name'], 'nick' => $user['nickname'],
 706                         'avatar-date' => $self['avatar-date'], 'location' => Profile::formatLocation($profile),
 707                         'about' => $profile['about'], 'keywords' => $profile['pub_keywords'],
 708                         'gender' => $profile['gender'], 'contact-type' => $user['account-type'],
 709                         'xmpp' => $profile['xmpp']];
 710
 711                 $avatar = Photo::selectFirst(['resource-id', 'type'], ['uid' => $uid, 'profile' => true]);
 712                 if (DBA::isResult($avatar)) {
 713                         if ($update_avatar) {
 714                                 $fields['avatar-date'] = DateTimeFormat::utcNow();
 715                         }
 716
 717                         // Creating the path to the avatar, beginning with the file suffix
 718                         $types = Images::supportedTypes();
 719                         if (isset($types[$avatar['type']])) {
 720                                 $file_suffix = $types[$avatar['type']];
 721                         }
 722
 723                         // We are adding a timestamp value so that other systems won't use cached content
 724                         $timestamp = strtotime($fields['avatar-date']);
 725
 726                         $prefix = System::baseUrl() . '/photo/' .$avatar['resource-id'] . '-';
 727                         $suffix = '.' . $file_suffix . '?ts=' . $timestamp;
 728
 729                         $fields['photo'] = $prefix . '4' . $suffix;
 730                         $fields['thumb'] = $prefix . '5' . $suffix;
 731                         $fields['micro'] = $prefix . '6' . $suffix;
 732                 } else {
 733                         // We hadn't found a photo entry, so we use the default avatar
 734                         $fields['photo'] = System::baseUrl() . '/images/person-300.jpg';
 735                         $fields['thumb'] = System::baseUrl() . '/images/person-80.jpg';
 736                         $fields['micro'] = System::baseUrl() . '/images/person-48.jpg';
 737                 }
 738
 739                 $fields['avatar'] = System::baseUrl() . '/photo/profile/' .$uid . '.' . $file_suffix;
 740                 $fields['forum'] = $user['page-flags'] == User::PAGE_FLAGS_COMMUNITY;
 741                 $fields['prv'] = $user['page-flags'] == User::PAGE_FLAGS_PRVGROUP;
 742                 $fields['unsearchable'] = $user['hidewall'] || !$profile['net-publish'];
 743
 744                 // it seems as if ported accounts can have wrong values, so we make sure that now everything is fine.
 745                 $fields['url'] = System::baseUrl() . '/profile/' . $user['nickname'];
 746                 $fields['nurl'] = Strings::normaliseLink($fields['url']);
 747                 $fields['addr'] = $user['nickname'] . '@' . substr(System::baseUrl(), strpos(System::baseUrl(), '://') + 3);
 748                 $fields['request'] = System::baseUrl() . '/dfrn_request/' . $user['nickname'];
 749                 $fields['notify'] = System::baseUrl() . '/dfrn_notify/' . $user['nickname'];
 750                 $fields['poll'] = System::baseUrl() . '/dfrn_poll/'. $user['nickname'];
 751                 $fields['confirm'] = System::baseUrl() . '/dfrn_confirm/' . $user['nickname'];
 752                 $fields['poco'] = System::baseUrl() . '/poco/' . $user['nickname'];
 753
 754                 $update = false;
 755
 756                 foreach ($fields as $field => $content) {
 757                         if ($self[$field] != $content) {
 758                                 $update = true;
 759                         }
 760                 }
 761
 762                 if ($update) {
 763                         if ($fields['name'] != $self['name']) {
 764                                 $fields['name-date'] = DateTimeFormat::utcNow();
 765                         }
 766                         $fields['updated'] = DateTimeFormat::utcNow();
 767                         DBA::update('contact', $fields, ['id' => $self['id']]);
 768
 769                         // Update the public contact as well
 770                         DBA::update('contact', $fields, ['uid' => 0, 'nurl' => $self['nurl']]);
 771
 772                         // Update the profile
 773                         $fields = ['photo' => System::baseUrl() . '/photo/profile/' .$uid . '.' . $file_suffix,
 774                                 'thumb' => System::baseUrl() . '/photo/avatar/' . $uid .'.' . $file_suffix];
 775                         DBA::update('profile', $fields, ['uid' => $uid, 'is-default' => true]);
 776                 }
 777         }
 778
 779         /**
 780          * @brief Marks a contact for removal
 781          *
 782          * @param int $id contact id
 783          * @return null
 784          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 785          */
 786         public static function remove($id)
 787         {
 788                 // We want just to make sure that we don't delete our "self" contact
 789                 $contact = DBA::selectFirst('contact', ['uid'], ['id' => $id, 'self' => false]);
 790                 if (!DBA::isResult($contact) || !intval($contact['uid'])) {
 791                         return;
 792                 }
 793
 794                 // Archive the contact
 795                 DBA::update('contact', ['archive' => true, 'network' => Protocol::PHANTOM, 'deleted' => true], ['id' => $id]);
 796
 797                 // Delete it in the background
 798                 Worker::add(PRIORITY_MEDIUM, 'RemoveContact', $id);
 799         }
 800
 801         /**
 802          * @brief Sends an unfriend message. Does not remove the contact
 803          *
 804          * @param array   $user     User unfriending
 805          * @param array   $contact  Contact unfriended
 806          * @param boolean $dissolve Remove the contact on the remote side
 807          * @return void
 808          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 809          * @throws \ImagickException
 810          */
 811         public static function terminateFriendship(array $user, array $contact, $dissolve = false)
 812         {
 813                 if (empty($contact['network'])) {
 814                         return;
 815                 }
 816
 817                 $protocol = $contact['network'];
 818                 if (($protocol == Protocol::DFRN) && !self::isLegacyDFRNContact($contact)) {
 819                         $protocol = Protocol::ACTIVITYPUB;
 820                 }
 821
 822                 if (($protocol == Protocol::DFRN) && $dissolve) {
 823                         DFRN::deliver($user, $contact, 'placeholder', true);
 824                 } elseif (in_array($protocol, [Protocol::OSTATUS, Protocol::DFRN])) {
 825                         // create an unfollow slap
 826                         $item = [];
 827                         $item['verb'] = Activity::O_UNFOLLOW;
 828                         $item['follow'] = $contact["url"];
 829                         $item['body'] = '';
 830                         $item['title'] = '';
 831                         $item['guid'] = '';
 832                         $item['tag'] = '';
 833                         $item['attach'] = '';
 834                         $slap = OStatus::salmon($item, $user);
 835
 836                         if (!empty($contact['notify'])) {
 837                                 Salmon::slapper($user, $contact['notify'], $slap);
 838                         }
 839                 } elseif ($protocol == Protocol::DIASPORA) {
 840                         Diaspora::sendUnshare($user, $contact);
 841                 } elseif ($protocol == Protocol::ACTIVITYPUB) {
 842                         ActivityPub\Transmitter::sendContactUndo($contact['url'], $contact['id'], $user['uid']);
 843
 844                         if ($dissolve) {
 845                                 ActivityPub\Transmitter::sendContactReject($contact['url'], $contact['hub-verify'], $user['uid']);
 846                         }
 847                 }
 848         }
 849
 850         /**
 851          * @brief Marks a contact for archival after a communication issue delay
 852          *
 853          * Contact has refused to recognise us as a friend. We will start a countdown.
 854          * If they still don't recognise us in 32 days, the relationship is over,
 855          * and we won't waste any more time trying to communicate with them.
 856          * This provides for the possibility that their database is temporarily messed
 857          * up or some other transient event and that there's a possibility we could recover from it.
 858          *
 859          * @param array $contact contact to mark for archival
 860          * @return null
 861          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 862          */
 863         public static function markForArchival(array $contact)
 864         {
 865                 if (!isset($contact['url']) && !empty($contact['id'])) {
 866                         $fields = ['id', 'url', 'archive', 'self', 'term-date'];
 867                         $contact = DBA::selectFirst('contact', $fields, ['id' => $contact['id']]);
 868                         if (!DBA::isResult($contact)) {
 869                                 return;
 870                         }
 871                 } elseif (!isset($contact['url'])) {
 872                         Logger::log('Empty contact: ' . json_encode($contact) . ' - ' . System::callstack(20), Logger::DEBUG);
 873                 }
 874
 875                 Logger::log('Contact '.$contact['id'].' is marked for archival', Logger::DEBUG);
 876
 877                 // Contact already archived or "self" contact? => nothing to do
 878                 if ($contact['archive'] || $contact['self']) {
 879                         return;
 880                 }
 881
 882                 if ($contact['term-date'] <= DBA::NULL_DATETIME) {
 883                         DBA::update('contact', ['term-date' => DateTimeFormat::utcNow()], ['id' => $contact['id']]);
 884                         DBA::update('contact', ['term-date' => DateTimeFormat::utcNow()], ['`nurl` = ? AND `term-date` <= ? AND NOT `self`', Strings::normaliseLink($contact['url']), DBA::NULL_DATETIME]);
 885                 } else {
 886                         /* @todo
 887                          * We really should send a notification to the owner after 2-3 weeks
 888                          * so they won't be surprised when the contact vanishes and can take
 889                          * remedial action if this was a serious mistake or glitch
 890                          */
 891
 892                         /// @todo Check for contact vitality via probing
 893                         $archival_days = Config::get('system', 'archival_days', 32);
 894
 895                         $expiry = $contact['term-date'] . ' + ' . $archival_days . ' days ';
 896                         if (DateTimeFormat::utcNow() > DateTimeFormat::utc($expiry)) {
 897                                 /* Relationship is really truly dead. archive them rather than
 898                                  * delete, though if the owner tries to unarchive them we'll start
 899                                  * the whole process over again.
 900                                  */
 901                                 DBA::update('contact', ['archive' => true], ['id' => $contact['id']]);
 902                                 DBA::update('contact', ['archive' => true], ['nurl' => Strings::normaliseLink($contact['url']), 'self' => false]);
 903                                 GContact::updateFromPublicContactURL($contact['url']);
 904                         }
 905                 }
 906         }
 907
 908         /**
 909          * @brief Cancels the archival countdown
 910          *
 911          * @see   Contact::markForArchival()
 912          *
 913          * @param array $contact contact to be unmarked for archival
 914          * @return null
 915          * @throws \Exception
 916          */
 917         public static function unmarkForArchival(array $contact)
 918         {
 919                 // Always unarchive the relay contact entry
 920                 if (!empty($contact['batch']) && !empty($contact['term-date']) && ($contact['term-date'] > DBA::NULL_DATETIME)) {
 921                         $fields = ['term-date' => DBA::NULL_DATETIME, 'archive' => false];
 922                         $condition = ['uid' => 0, 'network' => Protocol::FEDERATED, 'batch' => $contact['batch'], 'contact-type' => self::TYPE_RELAY];
 923                         DBA::update('contact', $fields, $condition);
 924                 }
 925
 926                 $condition = ['`id` = ? AND (`term-date` > ? OR `archive`)', $contact['id'], DBA::NULL_DATETIME];
 927                 $exists = DBA::exists('contact', $condition);
 928
 929                 // We don't need to update, we never marked this contact for archival
 930                 if (!$exists) {
 931                         return;
 932                 }
 933
 934                 Logger::log('Contact '.$contact['id'].' is marked as vital again', Logger::DEBUG);
 935
 936                 if (!isset($contact['url']) && !empty($contact['id'])) {
 937                         $fields = ['id', 'url', 'batch'];
 938                         $contact = DBA::selectFirst('contact', $fields, ['id' => $contact['id']]);
 939                         if (!DBA::isResult($contact)) {
 940                                 return;
 941                         }
 942                 }
 943
 944                 // It's a miracle. Our dead contact has inexplicably come back to life.
 945                 $fields = ['term-date' => DBA::NULL_DATETIME, 'archive' => false];
 946                 DBA::update('contact', $fields, ['id' => $contact['id']]);
 947                 DBA::update('contact', $fields, ['nurl' => Strings::normaliseLink($contact['url']), 'self' => false]);
 948                 GContact::updateFromPublicContactURL($contact['url']);
 949         }
 950
 951         /**
 952          * @brief Get contact data for a given profile link
 953          *
 954          * The function looks at several places (contact table and gcontact table) for the contact
 955          * It caches its result for the same script execution to prevent duplicate calls
 956          *
 957          * @param string $url     The profile link
 958          * @param int    $uid     User id
 959          * @param array  $default If not data was found take this data as default value
 960          *
 961          * @return array Contact data
 962          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 963          */
 964         public static function getDetailsByURL($url, $uid = -1, array $default = [])
 965         {
 966                 static $cache = [];
 967
 968                 if ($url == '') {
 969                         return $default;
 970                 }
 971
 972                 if ($uid == -1) {
 973                         $uid = local_user();
 974                 }
 975
 976                 if (isset($cache[$url][$uid])) {
 977                         return $cache[$url][$uid];
 978                 }
 979
 980                 $ssl_url = str_replace('http://', 'https://', $url);
 981
 982                 $nurl = Strings::normaliseLink($url);
 983
 984                 // Fetch contact data from the contact table for the given user
 985                 $s = DBA::p("SELECT `id`, `id` AS `cid`, 0 AS `gid`, 0 AS `zid`, `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, `xmpp`,
 986                         `keywords`, `gender`, `photo`, `thumb`, `micro`, `forum`, `prv`, (`forum` | `prv`) AS `community`, `contact-type`, `bd` AS `birthday`, `self`, `rel`, `pending`
 987                 FROM `contact` WHERE `nurl` = ? AND `uid` = ?", $nurl, $uid);
 988                 $r = DBA::toArray($s);
 989
 990                 // Fetch contact data from the contact table for the given user, checking with the alias
 991                 if (!DBA::isResult($r)) {
 992                         $s = DBA::p("SELECT `id`, `id` AS `cid`, 0 AS `gid`, 0 AS `zid`, `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, `xmpp`,
 993                                 `keywords`, `gender`, `photo`, `thumb`, `micro`, `forum`, `prv`, (`forum` | `prv`) AS `community`, `contact-type`, `bd` AS `birthday`, `self`, `rel`, `pending`
 994                         FROM `contact` WHERE `alias` IN (?, ?, ?) AND `uid` = ?", $nurl, $url, $ssl_url, $uid);
 995                         $r = DBA::toArray($s);
 996                 }
 997
 998                 // Fetch the data from the contact table with "uid=0" (which is filled automatically)
 999                 if (!DBA::isResult($r)) {
1000                         $s = DBA::p("SELECT `id`, 0 AS `cid`, `id` AS `zid`, 0 AS `gid`, `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, `xmpp`,
1001                         `keywords`, `gender`, `photo`, `thumb`, `micro`, `forum`, `prv`, (`forum` | `prv`) AS `community`, `contact-type`, `bd` AS `birthday`, 0 AS `self`, `rel`, `pending`
1002                         FROM `contact` WHERE `nurl` = ? AND `uid` = 0", $nurl);
1003                         $r = DBA::toArray($s);
1004                 }
1005
1006                 // Fetch the data from the contact table with "uid=0" (which is filled automatically) - checked with the alias
1007                 if (!DBA::isResult($r)) {
1008                         $s = DBA::p("SELECT `id`, 0 AS `cid`, `id` AS `zid`, 0 AS `gid`, `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, `xmpp`,
1009                         `keywords`, `gender`, `photo`, `thumb`, `micro`, `forum`, `prv`, (`forum` | `prv`) AS `community`, `contact-type`, `bd` AS `birthday`, 0 AS `self`, `rel`, `pending`
1010                         FROM `contact` WHERE `alias` IN (?, ?, ?) AND `uid` = 0", $nurl, $url, $ssl_url);
1011                         $r = DBA::toArray($s);
1012                 }
1013
1014                 // Fetch the data from the gcontact table
1015                 if (!DBA::isResult($r)) {
1016                         $s = DBA::p("SELECT 0 AS `id`, 0 AS `cid`, `id` AS `gid`, 0 AS `zid`, 0 AS `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, '' AS `xmpp`,
1017                         `keywords`, `gender`, `photo`, `photo` AS `thumb`, `photo` AS `micro`, 0 AS `forum`, 0 AS `prv`, `community`, `contact-type`, `birthday`, 0 AS `self`, 2 AS `rel`, 0 AS `pending`
1018                         FROM `gcontact` WHERE `nurl` = ?", $nurl);
1019                         $r = DBA::toArray($s);
1020                 }
1021
1022                 if (DBA::isResult($r)) {
1023                         // If there is more than one entry we filter out the connector networks
1024                         if (count($r) > 1) {
1025                                 foreach ($r as $id => $result) {
1026                                         if (!in_array($result["network"], Protocol::NATIVE_SUPPORT)) {
1027                                                 unset($r[$id]);
1028                                         }
1029                                 }
1030                         }
1031
1032                         $profile = array_shift($r);
1033
1034                         // "bd" always contains the upcoming birthday of a contact.
1035                         // "birthday" might contain the birthday including the year of birth.
1036                         if ($profile["birthday"] > DBA::NULL_DATE) {
1037                                 $bd_timestamp = strtotime($profile["birthday"]);
1038                                 $month = date("m", $bd_timestamp);
1039                                 $day = date("d", $bd_timestamp);
1040
1041                                 $current_timestamp = time();
1042                                 $current_year = date("Y", $current_timestamp);
1043                                 $current_month = date("m", $current_timestamp);
1044                                 $current_day = date("d", $current_timestamp);
1045
1046                                 $profile["bd"] = $current_year . "-" . $month . "-" . $day;
1047                                 $current = $current_year . "-" . $current_month . "-" . $current_day;
1048
1049                                 if ($profile["bd"] < $current) {
1050                                         $profile["bd"] = ( ++$current_year) . "-" . $month . "-" . $day;
1051                                 }
1052                         } else {
1053                                 $profile["bd"] = DBA::NULL_DATE;
1054                         }
1055                 } else {
1056                         $profile = $default;
1057                 }
1058
1059                 if (empty($profile["photo"]) && isset($default["photo"])) {
1060                         $profile["photo"] = $default["photo"];
1061                 }
1062
1063                 if (empty($profile["name"]) && isset($default["name"])) {
1064                         $profile["name"] = $default["name"];
1065                 }
1066
1067                 if (empty($profile["network"]) && isset($default["network"])) {
1068                         $profile["network"] = $default["network"];
1069                 }
1070
1071                 if (empty($profile["thumb"]) && isset($profile["photo"])) {
1072                         $profile["thumb"] = $profile["photo"];
1073                 }
1074
1075                 if (empty($profile["micro"]) && isset($profile["thumb"])) {
1076                         $profile["micro"] = $profile["thumb"];
1077                 }
1078
1079                 if ((empty($profile["addr"]) || empty($profile["name"])) && !empty($profile["gid"])
1080                         && in_array($profile["network"], Protocol::FEDERATED)
1081                 ) {
1082                         Worker::add(PRIORITY_LOW, "UpdateGContact", $url);
1083                 }
1084
1085                 // Show contact details of Diaspora contacts only if connected
1086                 if (empty($profile["cid"]) && ($profile["network"] ?? "") == Protocol::DIASPORA) {
1087                         $profile["location"] = "";
1088                         $profile["about"] = "";
1089                         $profile["gender"] = "";
1090                         $profile["birthday"] = DBA::NULL_DATE;
1091                 }
1092
1093                 $cache[$url][$uid] = $profile;
1094
1095                 return $profile;
1096         }
1097
1098         /**
1099          * @brief Get contact data for a given address
1100          *
1101          * The function looks at several places (contact table and gcontact table) for the contact
1102          *
1103          * @param string $addr The profile link
1104          * @param int    $uid  User id
1105          *
1106          * @return array Contact data
1107          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1108          * @throws \ImagickException
1109          */
1110         public static function getDetailsByAddr($addr, $uid = -1)
1111         {
1112                 if ($addr == '') {
1113                         return [];
1114                 }
1115
1116                 if ($uid == -1) {
1117                         $uid = local_user();
1118                 }
1119
1120                 // Fetch contact data from the contact table for the given user
1121                 $r = q("SELECT `id`, `id` AS `cid`, 0 AS `gid`, 0 AS `zid`, `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, `xmpp`,
1122                         `keywords`, `gender`, `photo`, `thumb`, `micro`, `forum`, `prv`, (`forum` | `prv`) AS `community`, `contact-type`, `bd` AS `birthday`, `self`, `rel`, `pending`
1123                         FROM `contact` WHERE `addr` = '%s' AND `uid` = %d AND NOT `deleted`",
1124                         DBA::escape($addr),
1125                         intval($uid)
1126                 );
1127                 // Fetch the data from the contact table with "uid=0" (which is filled automatically)
1128                 if (!DBA::isResult($r)) {
1129                         $r = q("SELECT `id`, 0 AS `cid`, `id` AS `zid`, 0 AS `gid`, `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, `xmpp`,
1130                                 `keywords`, `gender`, `photo`, `thumb`, `micro`, `forum`, `prv`, (`forum` | `prv`) AS `community`, `contact-type`, `bd` AS `birthday`, 0 AS `self`, `rel`, `pending`
1131                                 FROM `contact` WHERE `addr` = '%s' AND `uid` = 0 AND NOT `deleted`",
1132                                 DBA::escape($addr)
1133                         );
1134                 }
1135
1136                 // Fetch the data from the gcontact table
1137                 if (!DBA::isResult($r)) {
1138                         $r = q("SELECT 0 AS `id`, 0 AS `cid`, `id` AS `gid`, 0 AS `zid`, 0 AS `uid`, `url`, `nurl`, `alias`, `network`, `name`, `nick`, `addr`, `location`, `about`, '' AS `xmpp`,
1139                                 `keywords`, `gender`, `photo`, `photo` AS `thumb`, `photo` AS `micro`, `community` AS `forum`, 0 AS `prv`, `community`, `contact-type`, `birthday`, 0 AS `self`, 2 AS `rel`, 0 AS `pending`
1140                                 FROM `gcontact` WHERE `addr` = '%s'",
1141                                 DBA::escape($addr)
1142                         );
1143                 }
1144
1145                 if (!DBA::isResult($r)) {
1146                         $data = Probe::uri($addr);
1147
1148                         $profile = self::getDetailsByURL($data['url'], $uid);
1149                 } else {
1150                         $profile = $r[0];
1151                 }
1152
1153                 return $profile;
1154         }
1155
1156         /**
1157          * @brief Returns the data array for the photo menu of a given contact
1158          *
1159          * @param array $contact contact
1160          * @param int   $uid     optional, default 0
1161          * @return array
1162          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1163          * @throws \ImagickException
1164          */
1165         public static function photoMenu(array $contact, $uid = 0)
1166         {
1167                 $pm_url = '';
1168                 $status_link = '';
1169                 $photos_link = '';
1170                 $contact_drop_link = '';
1171                 $poke_link = '';
1172
1173                 if ($uid == 0) {
1174                         $uid = local_user();
1175                 }
1176
1177                 if (empty($contact['uid']) || ($contact['uid'] != $uid)) {
1178                         if ($uid == 0) {
1179                                 $profile_link = self::magicLink($contact['url']);
1180                                 $menu = ['profile' => [L10n::t('View Profile'), $profile_link, true]];
1181
1182                                 return $menu;
1183                         }
1184
1185                         // Look for our own contact if the uid doesn't match and isn't public
1186                         $contact_own = DBA::selectFirst('contact', [], ['nurl' => $contact['nurl'], 'network' => $contact['network'], 'uid' => $uid]);
1187                         if (DBA::isResult($contact_own)) {
1188                                 return self::photoMenu($contact_own, $uid);
1189                         }
1190                 }
1191
1192                 $sparkle = false;
1193                 if (($contact['network'] === Protocol::DFRN) && !$contact['self'] && empty($contact['pending'])) {
1194                         $sparkle = true;
1195                         $profile_link = System::baseUrl() . '/redir/' . $contact['id'];
1196                 } else {
1197                         $profile_link = $contact['url'];
1198                 }
1199
1200                 if ($profile_link === 'mailbox') {
1201                         $profile_link = '';
1202                 }
1203
1204                 if ($sparkle) {
1205                         $status_link = $profile_link . '?tab=status';
1206                         $photos_link = str_replace('/profile/', '/photos/', $profile_link);
1207                         $profile_link = $profile_link . '?tab=profile';
1208                 }
1209
1210                 if (self::canReceivePrivateMessages($contact) && empty($contact['pending'])) {
1211                         $pm_url = System::baseUrl() . '/message/new/' . $contact['id'];
1212                 }
1213
1214                 if (($contact['network'] == Protocol::DFRN) && !$contact['self'] && empty($contact['pending'])) {
1215                         $poke_link = System::baseUrl() . '/poke/?c=' . $contact['id'];
1216                 }
1217
1218                 $contact_url = System::baseUrl() . '/contact/' . $contact['id'];
1219
1220                 $posts_link = System::baseUrl() . '/contact/' . $contact['id'] . '/conversations';
1221
1222                 if (!$contact['self']) {
1223                         $contact_drop_link = System::baseUrl() . '/contact/' . $contact['id'] . '/drop?confirm=1';
1224                 }
1225
1226                 $follow_link = '';
1227                 $unfollow_link = '';
1228                 if (!$contact['self'] && in_array($contact['network'], Protocol::NATIVE_SUPPORT)) {
1229                         if ($contact['uid'] && in_array($contact['rel'], [self::SHARING, self::FRIEND])) {
1230                                 $unfollow_link = 'unfollow?url=' . urlencode($contact['url']);
1231                         } elseif(!$contact['pending']) {
1232                                 $follow_link = 'follow?url=' . urlencode($contact['url']);
1233                         }
1234                 }
1235
1236                 /**
1237                  * Menu array:
1238                  * "name" => [ "Label", "link", (bool)Should the link opened in a new tab? ]
1239                  */
1240                 if (empty($contact['uid'])) {
1241                         $menu = [
1242                                 'profile' => [L10n::t('View Profile')  , $profile_link , true],
1243                                 'network' => [L10n::t('Network Posts') , $posts_link   , false],
1244                                 'edit'    => [L10n::t('View Contact')  , $contact_url  , false],
1245                                 'follow'  => [L10n::t('Connect/Follow'), $follow_link  , true],
1246                                 'unfollow'=> [L10n::t('UnFollow')      , $unfollow_link, true],
1247                         ];
1248                 } else {
1249                         $menu = [
1250                                 'status'  => [L10n::t('View Status')   , $status_link      , true],
1251                                 'profile' => [L10n::t('View Profile')  , $profile_link     , true],
1252                                 'photos'  => [L10n::t('View Photos')   , $photos_link      , true],
1253                                 'network' => [L10n::t('Network Posts') , $posts_link       , false],
1254                                 'edit'    => [L10n::t('View Contact')  , $contact_url      , false],
1255                                 'drop'    => [L10n::t('Drop Contact')  , $contact_drop_link, false],
1256                                 'pm'      => [L10n::t('Send PM')       , $pm_url           , false],
1257                                 'poke'    => [L10n::t('Poke')          , $poke_link        , false],
1258                                 'follow'  => [L10n::t('Connect/Follow'), $follow_link      , true],
1259                                 'unfollow'=> [L10n::t('UnFollow')      , $unfollow_link    , true],
1260                         ];
1261
1262                         if (!empty($contact['pending'])) {
1263                                 $intro = DBA::selectFirst('intro', ['id'], ['contact-id' => $contact['id']]);
1264                                 if (DBA::isResult($intro)) {
1265                                         $menu['follow'] = [L10n::t('Approve'), 'notifications/intros/' . $intro['id'], true];
1266                                 }
1267                         }
1268                 }
1269
1270                 $args = ['contact' => $contact, 'menu' => &$menu];
1271
1272                 Hook::callAll('contact_photo_menu', $args);
1273
1274                 $menucondensed = [];
1275
1276                 foreach ($menu as $menuname => $menuitem) {
1277                         if ($menuitem[1] != '') {
1278                                 $menucondensed[$menuname] = $menuitem;
1279                         }
1280                 }
1281
1282                 return $menucondensed;
1283         }
1284
1285         /**
1286          * @brief Returns ungrouped contact count or list for user
1287          *
1288          * Returns either the total number of ungrouped contacts for the given user
1289          * id or a paginated list of ungrouped contacts.
1290          *
1291          * @param int $uid uid
1292          * @return array
1293          * @throws \Exception
1294          */
1295         public static function getUngroupedList($uid)
1296         {
1297                 return q("SELECT *
1298                            FROM `contact`
1299                            WHERE `uid` = %d
1300                            AND NOT `self`
1301                            AND NOT `deleted`
1302                            AND NOT `blocked`
1303                            AND NOT `pending`
1304                            AND `id` NOT IN (
1305                                 SELECT DISTINCT(`contact-id`)
1306                                 FROM `group_member`
1307                                 INNER JOIN `group` ON `group`.`id` = `group_member`.`gid`
1308                                 WHERE `group`.`uid` = %d
1309                            )", intval($uid), intval($uid));
1310         }
1311
1312         /**
1313          * Have a look at all contact tables for a given profile url.
1314          * This function works as a replacement for probing the contact.
1315          *
1316          * @param string  $url Contact URL
1317          * @param integer $cid Contact ID
1318          *
1319          * @return array Contact array in the "probe" structure
1320         */
1321         private static function getProbeDataFromDatabase($url, $cid = null)
1322         {
1323                 // The link could be provided as http although we stored it as https
1324                 $ssl_url = str_replace('http://', 'https://', $url);
1325
1326                 $fields = ['id', 'uid', 'url', 'addr', 'alias', 'notify', 'poll', 'name', 'nick',
1327                         'photo', 'keywords', 'location', 'about', 'network',
1328                         'priority', 'batch', 'request', 'confirm', 'poco'];
1329
1330                 if (!empty($cid)) {
1331                         $data = DBA::selectFirst('contact', $fields, ['id' => $cid]);
1332                         if (DBA::isResult($data)) {
1333                                 return $data;
1334                         }
1335                 }
1336
1337                 $data = DBA::selectFirst('contact', $fields, ['nurl' => Strings::normaliseLink($url)]);
1338
1339                 if (!DBA::isResult($data)) {
1340                         $condition = ['alias' => [$url, Strings::normaliseLink($url), $ssl_url]];
1341                         $data = DBA::selectFirst('contact', $fields, $condition);
1342                 }
1343
1344                 if (DBA::isResult($data)) {
1345                         // For security reasons we don't fetch key data from our users
1346                         $data["pubkey"] = '';
1347                         return $data;
1348                 }
1349
1350                 $fields = ['url', 'addr', 'alias', 'notify', 'name', 'nick',
1351                         'photo', 'keywords', 'location', 'about', 'network'];
1352                 $data = DBA::selectFirst('gcontact', $fields, ['nurl' => Strings::normaliseLink($url)]);
1353
1354                 if (!DBA::isResult($data)) {
1355                         $condition = ['alias' => [$url, Strings::normaliseLink($url), $ssl_url]];
1356                         $data = DBA::selectFirst('contact', $fields, $condition);
1357                 }
1358
1359                 if (DBA::isResult($data)) {
1360                         $data["pubkey"] = '';
1361                         $data["poll"] = '';
1362                         $data["priority"] = 0;
1363                         $data["batch"] = '';
1364                         $data["request"] = '';
1365                         $data["confirm"] = '';
1366                         $data["poco"] = '';
1367                         return $data;
1368                 }
1369
1370                 $data = ActivityPub::probeProfile($url, false);
1371                 if (!empty($data)) {
1372                         return $data;
1373                 }
1374
1375                 $fields = ['url', 'addr', 'alias', 'notify', 'poll', 'name', 'nick',
1376                         'photo', 'network', 'priority', 'batch', 'request', 'confirm'];
1377                 $data = DBA::selectFirst('fcontact', $fields, ['url' => $url]);
1378
1379                 if (!DBA::isResult($data)) {
1380                         $condition = ['alias' => [$url, Strings::normaliseLink($url), $ssl_url]];
1381                         $data = DBA::selectFirst('contact', $fields, $condition);
1382                 }
1383
1384                 if (DBA::isResult($data)) {
1385                         $data["pubkey"] = '';
1386                         $data["keywords"] = '';
1387                         $data["location"] = '';
1388                         $data["about"] = '';
1389                         $data["poco"] = '';
1390                         return $data;
1391                 }
1392
1393                 return [];
1394         }
1395
1396         /**
1397          * @brief Fetch the contact id for a given URL and user
1398          *
1399          * First lookup in the contact table to find a record matching either `url`, `nurl`,
1400          * `addr` or `alias`.
1401          *
1402          * If there's no record and we aren't looking for a public contact, we quit.
1403          * If there's one, we check that it isn't time to update the picture else we
1404          * directly return the found contact id.
1405          *
1406          * Second, we probe the provided $url whether it's http://server.tld/profile or
1407          * nick@server.tld. We quit if we can't get any info back.
1408          *
1409          * Third, we create the contact record if it doesn't exist
1410          *
1411          * Fourth, we update the existing record with the new data (avatar, alias, nick)
1412          * if there's any updates
1413          *
1414          * @param string  $url       Contact URL
1415          * @param integer $uid       The user id for the contact (0 = public contact)
1416          * @param boolean $no_update Don't update the contact
1417          * @param array   $default   Default value for creating the contact when every else fails
1418          * @param boolean $in_loop   Internally used variable to prevent an endless loop
1419          *
1420          * @return integer Contact ID
1421          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1422          * @throws \ImagickException
1423          */
1424         public static function getIdForURL($url, $uid = 0, $no_update = false, $default = [], $in_loop = false)
1425         {
1426                 Logger::log("Get contact data for url " . $url . " and user " . $uid . " - " . System::callstack(), Logger::DEBUG);
1427
1428                 $contact_id = 0;
1429
1430                 if ($url == '') {
1431                         return 0;
1432                 }
1433
1434                 /// @todo Verify if we can't use Contact::getDetailsByUrl instead of the following
1435                 // We first try the nurl (http://server.tld/nick), most common case
1436                 $fields = ['id', 'avatar', 'updated', 'network'];
1437                 $options = ['order' => ['id']];
1438                 $contact = DBA::selectFirst('contact', $fields, ['nurl' => Strings::normaliseLink($url), 'uid' => $uid, 'deleted' => false], $options);
1439
1440                 // Then the addr (nick@server.tld)
1441                 if (!DBA::isResult($contact)) {
1442                         $contact = DBA::selectFirst('contact', $fields, ['addr' => str_replace('acct:', '', $url), 'uid' => $uid, 'deleted' => false], $options);
1443                 }
1444
1445                 // Then the alias (which could be anything)
1446                 if (!DBA::isResult($contact)) {
1447                         // The link could be provided as http although we stored it as https
1448                         $ssl_url = str_replace('http://', 'https://', $url);
1449                         $condition = ['`alias` IN (?, ?, ?) AND `uid` = ? AND NOT `deleted`', $url, Strings::normaliseLink($url), $ssl_url, $uid];
1450                         $contact = DBA::selectFirst('contact', $fields, $condition, $options);
1451                 }
1452
1453                 if (DBA::isResult($contact)) {
1454                         $contact_id = $contact["id"];
1455                         $update_contact = false;
1456
1457                         // Update the contact every 7 days (Don't update mail or feed contacts)
1458                         if (in_array($contact['network'], Protocol::FEDERATED)) {
1459                                 $update_contact = ($contact['updated'] < DateTimeFormat::utc('now -7 days'));
1460
1461                                 // We force the update if the avatar is empty
1462                                 if (empty($contact['avatar'])) {
1463                                         $update_contact = true;
1464                                 }
1465                         } elseif (empty($default) && in_array($contact['network'], [Protocol::MAIL, Protocol::PHANTOM]) && ($uid == 0)) {
1466                                 // Update public mail accounts via their user's accounts
1467                                 $fields = ['network', 'addr', 'name', 'nick', 'avatar', 'photo', 'thumb', 'micro'];
1468                                 $mailcontact = DBA::selectFirst('contact', $fields, ["`addr` = ? AND `network` = ? AND `uid` != 0", $url, Protocol::MAIL]);
1469                                 if (!DBA::isResult($mailcontact)) {
1470                                         $mailcontact = DBA::selectFirst('contact', $fields, ["`nurl` = ? AND `network` = ? AND `uid` != 0", $url, Protocol::MAIL]);
1471                                 }
1472
1473                                 if (DBA::isResult($mailcontact)) {
1474                                         DBA::update('contact', $mailcontact, ['id' => $contact_id]);
1475                                 }
1476                         }
1477
1478                         // Update the contact in the background if needed but it is called by the frontend
1479                         if ($update_contact && $no_update && in_array($contact['network'], Protocol::NATIVE_SUPPORT)) {
1480                                 Worker::add(PRIORITY_LOW, "UpdateContact", $contact_id, ($uid == 0 ? 'force' : ''));
1481                         }
1482
1483                         if (!$update_contact || $no_update) {
1484                                 return $contact_id;
1485                         }
1486                 } elseif ($uid != 0) {
1487                         // Non-existing user-specific contact, exiting
1488                         return 0;
1489                 }
1490
1491                 if ($no_update && empty($default)) {
1492                         // When we don't want to update, we look if we know this contact in any way
1493                         $data = self::getProbeDataFromDatabase($url, $contact_id);
1494                         $background_update = true;
1495                 } elseif ($no_update && !empty($default['network'])) {
1496                         // If there are default values, take these
1497                         $data = $default;
1498                         $background_update = false;
1499                 } else {
1500                         $data = [];
1501                         $background_update = false;
1502                 }
1503
1504                 if (empty($data)) {
1505                         $data = Probe::uri($url, "", $uid);
1506                         // Ensure that there is a gserver entry
1507                         if (!empty($data['baseurl']) && ($data['network'] != Protocol::PHANTOM)) {
1508                                 GServer::check($data['baseurl']);
1509                         }
1510                 }
1511
1512                 // Take the default values when probing failed
1513                 if (!empty($default) && !in_array($data["network"], array_merge(Protocol::NATIVE_SUPPORT, [Protocol::PUMPIO]))) {
1514                         $data = array_merge($data, $default);
1515                 }
1516
1517                 if (empty($data) || ($data['network'] == Protocol::PHANTOM)) {
1518                         return 0;
1519                 }
1520
1521                 if (!$contact_id && !empty($data['alias']) && ($data['alias'] != $url) && !$in_loop) {
1522                         $contact_id = self::getIdForURL($data["alias"], $uid, true, $default, true);
1523                 }
1524
1525                 if (!$contact_id) {
1526                         $fields = [
1527                                 'uid'       => $uid,
1528                                 'created'   => DateTimeFormat::utcNow(),
1529                                 'url'       => $data['url'],
1530                                 'nurl'      => Strings::normaliseLink($data['url']),
1531                                 'addr'      => $data['addr'] ?? '',
1532                                 'alias'     => $data['alias'] ?? '',
1533                                 'notify'    => $data['notify'] ?? '',
1534                                 'poll'      => $data['poll'] ?? '',
1535                                 'name'      => $data['name'] ?? '',
1536                                 'nick'      => $data['nick'] ?? '',
1537                                 'photo'     => $data['photo'] ?? '',
1538                                 'keywords'  => $data['keywords'] ?? '',
1539                                 'location'  => $data['location'] ?? '',
1540                                 'about'     => $data['about'] ?? '',
1541                                 'network'   => $data['network'],
1542                                 'pubkey'    => $data['pubkey'] ?? '',
1543                                 'rel'       => self::SHARING,
1544                                 'priority'  => $data['priority'] ?? 0,
1545                                 'batch'     => $data['batch'] ?? '',
1546                                 'request'   => $data['request'] ?? '',
1547                                 'confirm'   => $data['confirm'] ?? '',
1548                                 'poco'      => $data['poco'] ?? '',
1549                                 'baseurl'   => $data['baseurl'] ?? '',
1550                                 'name-date' => DateTimeFormat::utcNow(),
1551                                 'uri-date'  => DateTimeFormat::utcNow(),
1552                                 'avatar-date' => DateTimeFormat::utcNow(),
1553                                 'writable'  => 1,
1554                                 'blocked'   => 0,
1555                                 'readonly'  => 0,
1556                                 'pending'   => 0];
1557
1558                         $condition = ['nurl' => Strings::normaliseLink($data["url"]), 'uid' => $uid, 'deleted' => false];
1559
1560                         // Before inserting we do check if the entry does exist now.
1561                         $contact = DBA::selectFirst('contact', ['id'], $condition, ['order' => ['id']]);
1562                         if (!DBA::isResult($contact)) {
1563                                 Logger::info('Create new contact', $fields);
1564
1565                                 self::insert($fields);
1566
1567                                 // We intentionally aren't using lastInsertId here. There is a chance for duplicates.
1568                                 $contact = DBA::selectFirst('contact', ['id'], $condition, ['order' => ['id']]);
1569                                 if (!DBA::isResult($contact)) {
1570                                         Logger::info('Contact creation failed', $fields);
1571                                         // Shouldn't happen
1572                                         return 0;
1573                                 }
1574                         } else {
1575                                 Logger::info('Contact had been created before', ['id' => $contact["id"], 'url' => $url, 'contact' => $fields]);
1576                         }
1577
1578                         $contact_id = $contact["id"];
1579                 }
1580
1581                 if (!empty($data['photo']) && ($data['network'] != Protocol::FEED)) {
1582                         self::updateAvatar($data['photo'], $uid, $contact_id);
1583                 }
1584
1585                 if (in_array($data["network"], array_merge(Protocol::NATIVE_SUPPORT, [Protocol::PUMPIO]))) {
1586                         if ($background_update) {
1587                                 // Update in the background when we fetched the data solely from the database
1588                                 Worker::add(PRIORITY_MEDIUM, "UpdateContact", $contact_id, ($uid == 0 ? 'force' : ''));
1589                         } else {
1590                                 // Else do a direct update
1591                                 self::updateFromProbe($contact_id, '', false);
1592
1593                                 // Update the gcontact entry
1594                                 if ($uid == 0) {
1595                                         GContact::updateFromPublicContactID($contact_id);
1596                                 }
1597                         }
1598                 } else {
1599                         $fields = ['url', 'nurl', 'addr', 'alias', 'name', 'nick', 'keywords', 'location', 'about', 'avatar-date', 'baseurl'];
1600                         $contact = DBA::selectFirst('contact', $fields, ['id' => $contact_id]);
1601
1602                         // This condition should always be true
1603                         if (!DBA::isResult($contact)) {
1604                                 return $contact_id;
1605                         }
1606
1607                         $updated = [
1608                                 'url' => $data['url'],
1609                                 'nurl' => Strings::normaliseLink($data['url']),
1610                                 'updated' => DateTimeFormat::utcNow()
1611                         ];
1612
1613                         $fields = ['addr', 'alias', 'name', 'nick', 'keywords', 'location', 'about', 'baseurl'];
1614
1615                         foreach ($fields as $field) {
1616                                 $updated[$field] = ($data[$field] ?? '') ?: $contact[$field];
1617                         }
1618
1619                         if (($updated['addr'] != $contact['addr']) || (!empty($data['alias']) && ($data['alias'] != $contact['alias']))) {
1620                                 $updated['uri-date'] = DateTimeFormat::utcNow();
1621                         }
1622
1623                         if (($data['name'] != $contact['name']) || ($data['nick'] != $contact['nick'])) {
1624                                 $updated['name-date'] = DateTimeFormat::utcNow();
1625                         }
1626
1627                         DBA::update('contact', $updated, ['id' => $contact_id], $contact);
1628                 }
1629
1630                 return $contact_id;
1631         }
1632
1633         /**
1634          * @brief Checks if the contact is archived
1635          *
1636          * @param int $cid contact id
1637          *
1638          * @return boolean Is the contact archived?
1639          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1640          */
1641         public static function isArchived(int $cid)
1642         {
1643                 if ($cid == 0) {
1644                         return false;
1645                 }
1646
1647                 $contact = DBA::selectFirst('contact', ['archive', 'url', 'batch'], ['id' => $cid]);
1648                 if (!DBA::isResult($contact)) {
1649                         return false;
1650                 }
1651
1652                 if ($contact['archive']) {
1653                         return true;
1654                 }
1655
1656                 // Check status of ActivityPub endpoints
1657                 $apcontact = APContact::getByURL($contact['url'], false);
1658                 if (!empty($apcontact)) {
1659                         if (!empty($apcontact['inbox']) && DBA::exists('inbox-status', ['archive' => true, 'url' => $apcontact['inbox']])) {
1660                                 return true;
1661                         }
1662
1663                         if (!empty($apcontact['sharedinbox']) && DBA::exists('inbox-status', ['archive' => true, 'url' => $apcontact['sharedinbox']])) {
1664                                 return true;
1665                         }
1666                 }
1667
1668                 // Check status of Diaspora endpoints
1669                 if (!empty($contact['batch'])) {
1670                         $condition = ['archive' => true, 'uid' => 0, 'network' => Protocol::FEDERATED, 'batch' => $contact['batch'], 'contact-type' => self::TYPE_RELAY];
1671                         return DBA::exists('contact', $condition);
1672                 }
1673
1674                 return false;
1675         }
1676
1677         /**
1678          * @brief Checks if the contact is blocked
1679          *
1680          * @param int $cid contact id
1681          *
1682          * @return boolean Is the contact blocked?
1683          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1684          */
1685         public static function isBlocked($cid)
1686         {
1687                 if ($cid == 0) {
1688                         return false;
1689                 }
1690
1691                 $blocked = DBA::selectFirst('contact', ['blocked', 'url'], ['id' => $cid]);
1692                 if (!DBA::isResult($blocked)) {
1693                         return false;
1694                 }
1695
1696                 if (Network::isUrlBlocked($blocked['url'])) {
1697                         return true;
1698                 }
1699
1700                 return (bool) $blocked['blocked'];
1701         }
1702
1703         /**
1704          * @brief Checks if the contact is hidden
1705          *
1706          * @param int $cid contact id
1707          *
1708          * @return boolean Is the contact hidden?
1709          * @throws \Exception
1710          */
1711         public static function isHidden($cid)
1712         {
1713                 if ($cid == 0) {
1714                         return false;
1715                 }
1716
1717                 $hidden = DBA::selectFirst('contact', ['hidden'], ['id' => $cid]);
1718                 if (!DBA::isResult($hidden)) {
1719                         return false;
1720                 }
1721                 return (bool) $hidden['hidden'];
1722         }
1723
1724         /**
1725          * @brief Returns posts from a given contact url
1726          *
1727          * @param string $contact_url Contact URL
1728          *
1729          * @param bool   $thread_mode
1730          * @param int    $update
1731          * @return string posts in HTML
1732          * @throws \Exception
1733          */
1734         public static function getPostsFromUrl($contact_url, $thread_mode = false, $update = 0)
1735         {
1736                 $a = self::getApp();
1737
1738                 $cid = self::getIdForURL($contact_url);
1739
1740                 $contact = DBA::selectFirst('contact', ['contact-type', 'network'], ['id' => $cid]);
1741                 if (!DBA::isResult($contact)) {
1742                         return '';
1743                 }
1744
1745                 if (empty($contact["network"]) || in_array($contact["network"], Protocol::FEDERATED)) {
1746                         $sql = "(`item`.`uid` = 0 OR (`item`.`uid` = ? AND NOT `item`.`global`))";
1747                 } else {
1748                         $sql = "`item`.`uid` = ?";
1749                 }
1750
1751                 $contact_field = ((($contact["contact-type"] == self::TYPE_COMMUNITY) || ($contact['network'] == Protocol::MAIL)) ? 'owner-id' : 'author-id');
1752
1753                 if ($thread_mode) {
1754                         $condition = ["`$contact_field` = ? AND `gravity` = ? AND " . $sql,
1755                                 $cid, GRAVITY_PARENT, local_user()];
1756                 } else {
1757                         $condition = ["`$contact_field` = ? AND `gravity` IN (?, ?) AND " . $sql,
1758                                 $cid, GRAVITY_PARENT, GRAVITY_COMMENT, local_user()];
1759                 }
1760
1761                 $pager = new Pager($a->query_string);
1762
1763                 $params = ['order' => ['received' => true],
1764                         'limit' => [$pager->getStart(), $pager->getItemsPerPage()]];
1765
1766                 if ($thread_mode) {
1767                         $r = Item::selectThreadForUser(local_user(), ['uri'], $condition, $params);
1768
1769                         $items = Item::inArray($r);
1770
1771                         $o = conversation($a, $items, $pager, 'contacts', $update, false, 'commented', local_user());
1772                 } else {
1773                         $r = Item::selectForUser(local_user(), [], $condition, $params);
1774
1775                         $items = Item::inArray($r);
1776
1777                         $o = conversation($a, $items, $pager, 'contact-posts', false);
1778                 }
1779
1780                 if (!$update) {
1781                         $o .= $pager->renderMinimal(count($items));
1782                 }
1783
1784                 return $o;
1785         }
1786
1787         /**
1788          * @brief Returns the account type name
1789          *
1790          * The function can be called with either the user or the contact array
1791          *
1792          * @param array $contact contact or user array
1793          * @return string
1794          */
1795         public static function getAccountType(array $contact)
1796         {
1797                 // There are several fields that indicate that the contact or user is a forum
1798                 // "page-flags" is a field in the user table,
1799                 // "forum" and "prv" are used in the contact table. They stand for User::PAGE_FLAGS_COMMUNITY and User::PAGE_FLAGS_PRVGROUP.
1800                 // "community" is used in the gcontact table and is true if the contact is User::PAGE_FLAGS_COMMUNITY or User::PAGE_FLAGS_PRVGROUP.
1801                 if ((isset($contact['page-flags']) && (intval($contact['page-flags']) == User::PAGE_FLAGS_COMMUNITY))
1802                         || (isset($contact['page-flags']) && (intval($contact['page-flags']) == User::PAGE_FLAGS_PRVGROUP))
1803                         || (isset($contact['forum']) && intval($contact['forum']))
1804                         || (isset($contact['prv']) && intval($contact['prv']))
1805                         || (isset($contact['community']) && intval($contact['community']))
1806                 ) {
1807                         $type = self::TYPE_COMMUNITY;
1808                 } else {
1809                         $type = self::TYPE_PERSON;
1810                 }
1811
1812                 // The "contact-type" (contact table) and "account-type" (user table) are more general then the chaos from above.
1813                 if (isset($contact["contact-type"])) {
1814                         $type = $contact["contact-type"];
1815                 }
1816
1817                 if (isset($contact["account-type"])) {
1818                         $type = $contact["account-type"];
1819                 }
1820
1821                 switch ($type) {
1822                         case self::TYPE_ORGANISATION:
1823                                 $account_type = L10n::t("Organisation");
1824                                 break;
1825
1826                         case self::TYPE_NEWS:
1827                                 $account_type = L10n::t('News');
1828                                 break;
1829
1830                         case self::TYPE_COMMUNITY:
1831                                 $account_type = L10n::t("Forum");
1832                                 break;
1833
1834                         default:
1835                                 $account_type = "";
1836                                 break;
1837                 }
1838
1839                 return $account_type;
1840         }
1841
1842         /**
1843          * @brief Blocks a contact
1844          *
1845          * @param int $cid
1846          * @return bool
1847          * @throws \Exception
1848          */
1849         public static function block($cid, $reason = null)
1850         {
1851                 $return = DBA::update('contact', ['blocked' => true, 'block_reason' => $reason], ['id' => $cid]);
1852
1853                 return $return;
1854         }
1855
1856         /**
1857          * @brief Unblocks a contact
1858          *
1859          * @param int $cid
1860          * @return bool
1861          * @throws \Exception
1862          */
1863         public static function unblock($cid)
1864         {
1865                 $return = DBA::update('contact', ['blocked' => false, 'block_reason' => null], ['id' => $cid]);
1866
1867                 return $return;
1868         }
1869
1870         /**
1871          * @brief Updates the avatar links in a contact only if needed
1872          *
1873          * @param string $avatar Link to avatar picture
1874          * @param int    $uid    User id of contact owner
1875          * @param int    $cid    Contact id
1876          * @param bool   $force  force picture update
1877          *
1878          * @return array Returns array of the different avatar sizes
1879          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1880          * @throws \ImagickException
1881          */
1882         public static function updateAvatar($avatar, $uid, $cid, $force = false)
1883         {
1884                 $contact = DBA::selectFirst('contact', ['avatar', 'photo', 'thumb', 'micro', 'nurl'], ['id' => $cid, 'self' => false]);
1885                 if (!DBA::isResult($contact)) {
1886                         return false;
1887                 } else {
1888                         $data = [$contact["photo"], $contact["thumb"], $contact["micro"]];
1889                 }
1890
1891                 if (($contact["avatar"] != $avatar) || $force) {
1892                         $photos = Photo::importProfilePhoto($avatar, $uid, $cid, true);
1893
1894                         if ($photos) {
1895                                 $fields = ['avatar' => $avatar, 'photo' => $photos[0], 'thumb' => $photos[1], 'micro' => $photos[2], 'avatar-date' => DateTimeFormat::utcNow()];
1896                                 DBA::update('contact', $fields, ['id' => $cid]);
1897
1898                                 // Update the public contact (contact id = 0)
1899                                 if ($uid != 0) {
1900                                         $pcontact = DBA::selectFirst('contact', ['id'], ['nurl' => $contact['nurl'], 'uid' => 0]);
1901                                         if (DBA::isResult($pcontact)) {
1902                                                 DBA::update('contact', $fields, ['id' => $pcontact['id']]);
1903                                         }
1904                                 }
1905
1906                                 return $photos;
1907                         }
1908                 }
1909
1910                 return $data;
1911         }
1912
1913         /**
1914          * @brief Helper function for "updateFromProbe". Updates personal and public contact
1915          *
1916          * @param integer $id      contact id
1917          * @param integer $uid     user id
1918          * @param string  $url     The profile URL of the contact
1919          * @param array   $fields  The fields that are updated
1920          *
1921          * @throws \Exception
1922          */
1923         private static function updateContact($id, $uid, $url, array $fields)
1924         {
1925                 if (!DBA::update('contact', $fields, ['id' => $id])) {
1926                         Logger::info('Couldn\'t update contact.', ['id' => $id, 'fields' => $fields]);
1927                         return;
1928                 }
1929
1930                 // Search for duplicated contacts and get rid of them
1931                 if (self::removeDuplicates(Strings::normaliseLink($url), $uid) || ($uid != 0)) {
1932                         return;
1933                 }
1934
1935                 // Update the corresponding gcontact entry
1936                 GContact::updateFromPublicContactID($id);
1937
1938                 // Archive or unarchive the contact. We only need to do this for the public contact.
1939                 // The archive/unarchive function will update the personal contacts by themselves.
1940                 $contact = DBA::selectFirst('contact', [], ['id' => $id]);
1941                 if (!DBA::isResult($contact)) {
1942                         Logger::info('Couldn\'t select contact for archival.', ['id' => $id]);
1943                         return;
1944                 }
1945
1946                 if (!empty($fields['success_update'])) {
1947                         self::unmarkForArchival($contact);
1948                 } elseif (!empty($fields['failure_update'])) {
1949                         self::markForArchival($contact);
1950                 }
1951
1952                 $condition = ['self' => false, 'nurl' => Strings::normaliseLink($url), 'network' => Protocol::FEDERATED];
1953
1954                 // These contacts are sharing with us, we don't poll them.
1955                 // This means that we don't set the update fields in "OnePoll.php".
1956                 $condition['rel'] = self::SHARING;
1957                 DBA::update('contact', $fields, $condition);
1958
1959                 unset($fields['last-update']);
1960                 unset($fields['success_update']);
1961                 unset($fields['failure_update']);
1962
1963                 if (empty($fields)) {
1964                         return;
1965                 }
1966
1967                 // We are polling these contacts, so we mustn't set the update fields here.
1968                 $condition['rel'] = [self::FOLLOWER, self::FRIEND];
1969                 DBA::update('contact', $fields, $condition);
1970         }
1971
1972         /**
1973          * @brief Remove duplicated contacts
1974          *
1975          * @param string  $nurl  Normalised contact url
1976          * @param integer $uid   User id
1977          * @return boolean
1978          * @throws \Exception
1979          */
1980         public static function removeDuplicates(string $nurl, int $uid)
1981         {
1982                 $condition = ['nurl' => $nurl, 'uid' => $uid, 'deleted' => false, 'network' => Protocol::FEDERATED];
1983                 $count = DBA::count('contact', $condition);
1984                 if ($count <= 1) {
1985                         return false;
1986                 }
1987
1988                 $first_contact = DBA::selectFirst('contact', ['id', 'network'], $condition, ['order' => ['id']]);
1989                 if (!DBA::isResult($first_contact)) {
1990                         // Shouldn't happen - so we handle it
1991                         return false;
1992                 }
1993
1994                 $first = $first_contact['id'];
1995                 Logger::info('Found duplicates', ['count' => $count, 'first' => $first, 'uid' => $uid, 'nurl' => $nurl]);
1996                 if (($uid != 0 && ($first_contact['network'] == Protocol::DFRN))) {
1997                         // Don't handle non public DFRN duplicates by now (legacy DFRN is very special because of the key handling)
1998                         Logger::info('Not handling non public DFRN duplicate', ['uid' => $uid, 'nurl' => $nurl]);
1999                         return false;
2000                 }
2001
2002                 // Find all duplicates
2003                 $condition = ["`nurl` = ? AND `uid` = ? AND `id` != ? AND NOT `self` AND NOT `deleted`", $nurl, $uid, $first];
2004                 $duplicates = DBA::select('contact', ['id', 'network'], $condition);
2005                 while ($duplicate = DBA::fetch($duplicates)) {
2006                         if (!in_array($duplicate['network'], Protocol::FEDERATED)) {
2007                                 continue;
2008                         }
2009
2010                         Worker::add(PRIORITY_HIGH, 'MergeContact', $first, $duplicate['id'], $uid);
2011                 }
2012                 Logger::info('Duplicates handled', ['uid' => $uid, 'nurl' => $nurl]);
2013                 return true;
2014         }
2015
2016         /**
2017          * @param integer $id      contact id
2018          * @param string  $network Optional network we are probing for
2019          * @param boolean $force   Optional forcing of network probing (otherwise we use the cached data)
2020          * @return boolean
2021          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2022          * @throws \ImagickException
2023          */
2024         public static function updateFromProbe($id, $network = '', $force = false)
2025         {
2026                 /*
2027                   Warning: Never ever fetch the public key via Probe::uri and write it into the contacts.
2028                   This will reliably kill your communication with old Friendica contacts.
2029                  */
2030
2031                 // These fields aren't updated by this routine:
2032                 // 'xmpp', 'sensitive'
2033
2034                 $fields = ['uid', 'avatar', 'name', 'nick', 'location', 'keywords', 'about', 'gender',
2035                         'unsearchable', 'url', 'addr', 'batch', 'notify', 'poll', 'request', 'confirm', 'poco',
2036                         'network', 'alias', 'baseurl', 'forum', 'prv', 'contact-type', 'pubkey'];
2037                 $contact = DBA::selectFirst('contact', $fields, ['id' => $id]);
2038                 if (!DBA::isResult($contact)) {
2039                         return false;
2040                 }
2041
2042                 $uid = $contact['uid'];
2043                 unset($contact['uid']);
2044
2045                 $pubkey = $contact['pubkey'];
2046                 unset($contact['pubkey']);
2047
2048                 $contact['photo'] = $contact['avatar'];
2049                 unset($contact['avatar']);
2050
2051                 $ret = Probe::uri($contact['url'], $network, $uid, !$force);
2052
2053                 $updated = DateTimeFormat::utcNow();
2054
2055                 // We must not try to update relay contacts via probe. They are no real contacts.
2056                 // We check after the probing to be able to correct falsely detected contact types.
2057                 if (($contact['contact-type'] == self::TYPE_RELAY) &&
2058                         (!Strings::compareLink($ret['url'], $contact['url']) || in_array($ret['network'], [Protocol::FEED, Protocol::PHANTOM]))) {
2059                         self::updateContact($id, $uid, $contact['url'], ['last-update' => $updated, 'success_update' => $updated]);
2060                         Logger::info('Not updating relais', ['id' => $id, 'url' => $contact['url']]);
2061                         return true;
2062                 }
2063
2064                 // If Probe::uri fails the network code will be different ("feed" or "unkn")
2065                 if (in_array($ret['network'], [Protocol::FEED, Protocol::PHANTOM]) && ($ret['network'] != $contact['network'])) {
2066                         if ($force && ($uid == 0)) {
2067                                 self::updateContact($id, $uid, $ret['url'], ['last-update' => $updated, 'failure_update' => $updated]);
2068                         }
2069                         return false;
2070                 }
2071
2072                 if (isset($ret['hide']) && is_bool($ret['hide'])) {
2073                         $ret['unsearchable'] = $ret['hide'];
2074                 }
2075
2076                 if (isset($ret['account-type']) && is_int($ret['account-type'])) {
2077                         $ret['forum'] = false;
2078                         $ret['prv'] = false;
2079                         $ret['contact-type'] = $ret['account-type'];
2080                         if ($ret['contact-type'] == User::ACCOUNT_TYPE_COMMUNITY) {
2081                                 $apcontact = APContact::getByURL($ret['url'], false);
2082                                 if (isset($apcontact['manually-approve'])) {
2083                                         $ret['forum'] = (bool)!$apcontact['manually-approve'];
2084                                         $ret['prv'] = (bool)!$ret['forum'];
2085                                 }
2086                         }
2087                 }
2088
2089                 $new_pubkey = $ret['pubkey'];
2090
2091                 $update = false;
2092
2093                 // make sure to not overwrite existing values with blank entries except some technical fields
2094                 $keep = ['batch', 'notify', 'poll', 'request', 'confirm', 'poco', 'baseurl'];
2095                 foreach ($ret as $key => $val) {
2096                         if (!array_key_exists($key, $contact)) {
2097                                 unset($ret[$key]);
2098                         } elseif (($contact[$key] != '') && ($val === '') && !is_bool($ret[$key]) && !in_array($key, $keep)) {
2099                                 $ret[$key] = $contact[$key];
2100                         } elseif ($ret[$key] != $contact[$key]) {
2101                                 $update = true;
2102                         }
2103                 }
2104
2105                 if (!empty($ret['photo']) && ($ret['network'] != Protocol::FEED)) {
2106                         self::updateAvatar($ret['photo'], $uid, $id, $update || $force);
2107                 }
2108
2109                 if (!$update) {
2110                         if ($force) {
2111                                 self::updateContact($id, $uid, $ret['url'], ['last-update' => $updated, 'success_update' => $updated]);
2112                         }
2113                         return true;
2114                 }
2115
2116                 $ret['nurl'] = Strings::normaliseLink($ret['url']);
2117                 $ret['updated'] = $updated;
2118
2119                 // Only fill the pubkey if it had been empty before. We have to prevent identity theft.
2120                 if (empty($pubkey) && !empty($new_pubkey)) {
2121                         $ret['pubkey'] = $new_pubkey;
2122                 }
2123
2124                 if (($ret['addr'] != $contact['addr']) || (!empty($ret['alias']) && ($ret['alias'] != $contact['alias']))) {
2125                         $ret['uri-date'] = DateTimeFormat::utcNow();
2126                 }
2127
2128                 if (($ret['name'] != $contact['name']) || ($ret['nick'] != $contact['nick'])) {
2129                         $ret['name-date'] = $updated;
2130                 }
2131
2132                 if ($force && ($uid == 0)) {
2133                         $ret['last-update'] = $updated;
2134                         $ret['success_update'] = $updated;
2135                 }
2136
2137                 unset($ret['photo']);
2138
2139                 self::updateContact($id, $uid, $ret['url'], $ret);
2140
2141                 return true;
2142         }
2143
2144         public static function updateFromProbeByURL($url, $force = false)
2145         {
2146                 $id = self::getIdForURL($url);
2147
2148                 if (empty($id)) {
2149                         return $id;
2150                 }
2151
2152                 self::updateFromProbe($id, '', $force);
2153
2154                 return $id;
2155         }
2156
2157         /**
2158          * Detects if a given contact array belongs to a legacy DFRN connection
2159          *
2160          * @param array $contact
2161          * @return boolean
2162          */
2163         public static function isLegacyDFRNContact($contact)
2164         {
2165                 // Newer Friendica contacts are connected via AP, then these fields aren't set
2166                 return !empty($contact['dfrn-id']) || !empty($contact['issued-id']);
2167         }
2168
2169         /**
2170          * Detects the communication protocol for a given contact url.
2171          * This is used to detect Friendica contacts that we can communicate via AP.
2172          *
2173          * @param string $url contact url
2174          * @param string $network Network of that contact
2175          * @return string with protocol
2176          */
2177         public static function getProtocol($url, $network)
2178         {
2179                 if ($network != Protocol::DFRN) {
2180                         return $network;
2181                 }
2182
2183                 $apcontact = APContact::getByURL($url);
2184                 if (!empty($apcontact) && !empty($apcontact['generator'])) {
2185                         return Protocol::ACTIVITYPUB;
2186                 } else {
2187                         return $network;
2188                 }
2189         }
2190
2191         /**
2192          * Takes a $uid and a url/handle and adds a new contact
2193          * Currently if the contact is DFRN, interactive needs to be true, to redirect to the
2194          * dfrn_request page.
2195          *
2196          * Otherwise this can be used to bulk add StatusNet contacts, Twitter contacts, etc.
2197          *
2198          * Returns an array
2199          * $return['success'] boolean true if successful
2200          * $return['message'] error text if success is false.
2201          *
2202          * @brief Takes a $uid and a url/handle and adds a new contact
2203          * @param int    $uid
2204          * @param string $url
2205          * @param bool   $interactive
2206          * @param string $network
2207          * @return array
2208          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2209          * @throws \ImagickException
2210          */
2211         public static function createFromProbe($uid, $url, $interactive = false, $network = '')
2212         {
2213                 $result = ['cid' => -1, 'success' => false, 'message' => ''];
2214
2215                 $a = \get_app();
2216
2217                 // remove ajax junk, e.g. Twitter
2218                 $url = str_replace('/#!/', '/', $url);
2219
2220                 if (!Network::isUrlAllowed($url)) {
2221                         $result['message'] = L10n::t('Disallowed profile URL.');
2222                         return $result;
2223                 }
2224
2225                 if (Network::isUrlBlocked($url)) {
2226                         $result['message'] = L10n::t('Blocked domain');
2227                         return $result;
2228                 }
2229
2230                 if (!$url) {
2231                         $result['message'] = L10n::t('Connect URL missing.');
2232                         return $result;
2233                 }
2234
2235                 $arr = ['url' => $url, 'contact' => []];
2236
2237                 Hook::callAll('follow', $arr);
2238
2239                 if (empty($arr)) {
2240                         $result['message'] = L10n::t('The contact could not be added. Please check the relevant network credentials in your Settings -> Social Networks page.');
2241                         return $result;
2242                 }
2243
2244                 if (!empty($arr['contact']['name'])) {
2245                         $ret = $arr['contact'];
2246                 } else {
2247                         $ret = Probe::uri($url, $network, $uid, false);
2248                 }
2249
2250                 if (($network != '') && ($ret['network'] != $network)) {
2251                         Logger::log('Expected network ' . $network . ' does not match actual network ' . $ret['network']);
2252                         return $result;
2253                 }
2254
2255                 // check if we already have a contact
2256                 // the poll url is more reliable than the profile url, as we may have
2257                 // indirect links or webfinger links
2258
2259                 $condition = ['uid' => $uid, 'poll' => [$ret['poll'], Strings::normaliseLink($ret['poll'])], 'network' => $ret['network'], 'pending' => false];
2260                 $contact = DBA::selectFirst('contact', ['id', 'rel'], $condition);
2261                 if (!DBA::isResult($contact)) {
2262                         $condition = ['uid' => $uid, 'nurl' => Strings::normaliseLink($url), 'network' => $ret['network'], 'pending' => false];
2263                         $contact = DBA::selectFirst('contact', ['id', 'rel'], $condition);
2264                 }
2265
2266                 $protocol = self::getProtocol($url, $ret['network']);
2267
2268                 if (($protocol === Protocol::DFRN) && !DBA::isResult($contact)) {
2269                         if ($interactive) {
2270                                 if (strlen($a->getURLPath())) {
2271                                         $myaddr = bin2hex(System::baseUrl() . '/profile/' . $a->user['nickname']);
2272                                 } else {
2273                                         $myaddr = bin2hex($a->user['nickname'] . '@' . $a->getHostName());
2274                                 }
2275
2276                                 $a->internalRedirect($ret['request'] . "&addr=$myaddr");
2277
2278                                 // NOTREACHED
2279                         }
2280                 } elseif (Config::get('system', 'dfrn_only') && ($ret['network'] != Protocol::DFRN)) {
2281                         $result['message'] = L10n::t('This site is not configured to allow communications with other networks.') . EOL;
2282                         $result['message'] .= L10n::t('No compatible communication protocols or feeds were discovered.') . EOL;
2283                         return $result;
2284                 }
2285
2286                 // This extra param just confuses things, remove it
2287                 if ($protocol === Protocol::DIASPORA) {
2288                         $ret['url'] = str_replace('?absolute=true', '', $ret['url']);
2289                 }
2290
2291                 // do we have enough information?
2292                 if (empty($ret['name']) || empty($ret['poll']) || (empty($ret['url']) && empty($ret['addr']))) {
2293                         $result['message'] .= L10n::t('The profile address specified does not provide adequate information.') . EOL;
2294                         if (empty($ret['poll'])) {
2295                                 $result['message'] .= L10n::t('No compatible communication protocols or feeds were discovered.') . EOL;
2296                         }
2297                         if (empty($ret['name'])) {
2298                                 $result['message'] .= L10n::t('An author or name was not found.') . EOL;
2299                         }
2300                         if (empty($ret['url'])) {
2301                                 $result['message'] .= L10n::t('No browser URL could be matched to this address.') . EOL;
2302                         }
2303                         if (strpos($url, '@') !== false) {
2304                                 $result['message'] .= L10n::t('Unable to match @-style Identity Address with a known protocol or email contact.') . EOL;
2305                                 $result['message'] .= L10n::t('Use mailto: in front of address to force email check.') . EOL;
2306                         }
2307                         return $result;
2308                 }
2309
2310                 if ($protocol === Protocol::OSTATUS && Config::get('system', 'ostatus_disabled')) {
2311                         $result['message'] .= L10n::t('The profile address specified belongs to a network which has been disabled on this site.') . EOL;
2312                         $ret['notify'] = '';
2313                 }
2314
2315                 if (!$ret['notify']) {
2316                         $result['message'] .= L10n::t('Limited profile. This person will be unable to receive direct/personal notifications from you.') . EOL;
2317                 }
2318
2319                 $writeable = ((($protocol === Protocol::OSTATUS) && ($ret['notify'])) ? 1 : 0);
2320
2321                 $subhub = (($protocol === Protocol::OSTATUS) ? true : false);
2322
2323                 $hidden = (($protocol === Protocol::MAIL) ? 1 : 0);
2324
2325                 $pending = false;
2326                 if ($protocol == Protocol::ACTIVITYPUB) {
2327                         $apcontact = APContact::getByURL($url, false);
2328                         if (isset($apcontact['manually-approve'])) {
2329                                 $pending = (bool)$apcontact['manually-approve'];
2330                         }
2331                 }
2332
2333                 if (in_array($protocol, [Protocol::MAIL, Protocol::DIASPORA, Protocol::ACTIVITYPUB])) {
2334                         $writeable = 1;
2335                 }
2336
2337                 if (DBA::isResult($contact)) {
2338                         // update contact
2339                         $new_relation = (($contact['rel'] == self::FOLLOWER) ? self::FRIEND : self::SHARING);
2340
2341                         $fields = ['rel' => $new_relation, 'subhub' => $subhub, 'readonly' => false];
2342                         DBA::update('contact', $fields, ['id' => $contact['id']]);
2343                 } else {
2344                         $new_relation = (in_array($protocol, [Protocol::MAIL]) ? self::FRIEND : self::SHARING);
2345
2346                         // create contact record
2347                         self::insert([
2348                                 'uid'     => $uid,
2349                                 'created' => DateTimeFormat::utcNow(),
2350                                 'url'     => $ret['url'],
2351                                 'nurl'    => Strings::normaliseLink($ret['url']),
2352                                 'addr'    => $ret['addr'],
2353                                 'alias'   => $ret['alias'],
2354                                 'batch'   => $ret['batch'],
2355                                 'notify'  => $ret['notify'],
2356                                 'poll'    => $ret['poll'],
2357                                 'poco'    => $ret['poco'],
2358                                 'name'    => $ret['name'],
2359                                 'nick'    => $ret['nick'],
2360                                 'network' => $ret['network'],
2361                                 'baseurl' => $ret['baseurl'],
2362                                 'protocol' => $protocol,
2363                                 'pubkey'  => $ret['pubkey'],
2364                                 'rel'     => $new_relation,
2365                                 'priority'=> $ret['priority'],
2366                                 'writable'=> $writeable,
2367                                 'hidden'  => $hidden,
2368                                 'blocked' => 0,
2369                                 'readonly'=> 0,
2370                                 'pending' => $pending,
2371                                 'subhub'  => $subhub
2372                         ]);
2373                 }
2374
2375                 $contact = DBA::selectFirst('contact', [], ['url' => $ret['url'], 'network' => $ret['network'], 'uid' => $uid]);
2376                 if (!DBA::isResult($contact)) {
2377                         $result['message'] .= L10n::t('Unable to retrieve contact information.') . EOL;
2378                         return $result;
2379                 }
2380
2381                 $contact_id = $contact['id'];
2382                 $result['cid'] = $contact_id;
2383
2384                 Group::addMember(User::getDefaultGroup($uid, $contact["network"]), $contact_id);
2385
2386                 // Update the avatar
2387                 self::updateAvatar($ret['photo'], $uid, $contact_id);
2388
2389                 // pull feed and consume it, which should subscribe to the hub.
2390
2391                 Worker::add(PRIORITY_HIGH, "OnePoll", $contact_id, "force");
2392
2393                 $owner = User::getOwnerDataById($uid);
2394
2395                 if (DBA::isResult($owner)) {
2396                         if (in_array($protocol, [Protocol::OSTATUS, Protocol::DFRN])) {
2397                                 // create a follow slap
2398                                 $item = [];
2399                                 $item['verb'] = Activity::FOLLOW;
2400                                 $item['follow'] = $contact["url"];
2401                                 $item['body'] = '';
2402                                 $item['title'] = '';
2403                                 $item['guid'] = '';
2404                                 $item['tag'] = '';
2405                                 $item['attach'] = '';
2406
2407                                 $slap = OStatus::salmon($item, $owner);
2408
2409                                 if (!empty($contact['notify'])) {
2410                                         Salmon::slapper($owner, $contact['notify'], $slap);
2411                                 }
2412                         } elseif ($protocol == Protocol::DIASPORA) {
2413                                 $ret = Diaspora::sendShare($a->user, $contact);
2414                                 Logger::log('share returns: ' . $ret);
2415                         } elseif ($protocol == Protocol::ACTIVITYPUB) {
2416                                 $activity_id = ActivityPub\Transmitter::activityIDFromContact($contact_id);
2417                                 if (empty($activity_id)) {
2418                                         // This really should never happen
2419                                         return false;
2420                                 }
2421
2422                                 $ret = ActivityPub\Transmitter::sendActivity('Follow', $contact['url'], $uid, $activity_id);
2423                                 Logger::log('Follow returns: ' . $ret);
2424                         }
2425                 }
2426
2427                 $result['success'] = true;
2428                 return $result;
2429         }
2430
2431         /**
2432          * @brief Updated contact's SSL policy
2433          *
2434          * @param array  $contact    Contact array
2435          * @param string $new_policy New policy, valid: self,full
2436          *
2437          * @return array Contact array with updated values
2438          * @throws \Exception
2439          */
2440         public static function updateSslPolicy(array $contact, $new_policy)
2441         {
2442                 $ssl_changed = false;
2443                 if ((intval($new_policy) == BaseURL::SSL_POLICY_SELFSIGN || $new_policy === 'self') && strstr($contact['url'], 'https:')) {
2444                         $ssl_changed = true;
2445                         $contact['url']     =   str_replace('https:', 'http:', $contact['url']);
2446                         $contact['request'] =   str_replace('https:', 'http:', $contact['request']);
2447                         $contact['notify']  =   str_replace('https:', 'http:', $contact['notify']);
2448                         $contact['poll']    =   str_replace('https:', 'http:', $contact['poll']);
2449                         $contact['confirm'] =   str_replace('https:', 'http:', $contact['confirm']);
2450                         $contact['poco']    =   str_replace('https:', 'http:', $contact['poco']);
2451                 }
2452
2453                 if ((intval($new_policy) == BaseURL::SSL_POLICY_FULL || $new_policy === 'full') && strstr($contact['url'], 'http:')) {
2454                         $ssl_changed = true;
2455                         $contact['url']     =   str_replace('http:', 'https:', $contact['url']);
2456                         $contact['request'] =   str_replace('http:', 'https:', $contact['request']);
2457                         $contact['notify']  =   str_replace('http:', 'https:', $contact['notify']);
2458                         $contact['poll']    =   str_replace('http:', 'https:', $contact['poll']);
2459                         $contact['confirm'] =   str_replace('http:', 'https:', $contact['confirm']);
2460                         $contact['poco']    =   str_replace('http:', 'https:', $contact['poco']);
2461                 }
2462
2463                 if ($ssl_changed) {
2464                         $fields = ['url' => $contact['url'], 'request' => $contact['request'],
2465                                         'notify' => $contact['notify'], 'poll' => $contact['poll'],
2466                                         'confirm' => $contact['confirm'], 'poco' => $contact['poco']];
2467                         DBA::update('contact', $fields, ['id' => $contact['id']]);
2468                 }
2469
2470                 return $contact;
2471         }
2472
2473         /**
2474          * @param array  $importer Owner (local user) data
2475          * @param array  $contact  Existing owner-specific contact data we want to expand the relationship with. Optional.
2476          * @param array  $datarray An item-like array with at least the 'author-id' and 'author-url' keys for the contact. Mandatory.
2477          * @param bool   $sharing  True: Contact is now sharing with Owner; False: Contact is now following Owner (default)
2478          * @param string $note     Introduction additional message
2479          * @return bool|null True: follow request is accepted; False: relationship is rejected; Null: relationship is pending
2480          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2481          * @throws \ImagickException
2482          */
2483         public static function addRelationship(array $importer, array $contact, array $datarray, $sharing = false, $note = '')
2484         {
2485                 // Should always be set
2486                 if (empty($datarray['author-id'])) {
2487                         return false;
2488                 }
2489
2490                 $fields = ['url', 'name', 'nick', 'avatar', 'photo', 'network', 'blocked'];
2491                 $pub_contact = DBA::selectFirst('contact', $fields, ['id' => $datarray['author-id']]);
2492                 if (!DBA::isResult($pub_contact)) {
2493                         // Should never happen
2494                         return false;
2495                 }
2496
2497                 // Contact is blocked at node-level
2498                 if (self::isBlocked($datarray['author-id'])) {
2499                         return false;
2500                 }
2501
2502                 $url = ($datarray['author-link'] ?? '') ?: $pub_contact['url'];
2503                 $name = $pub_contact['name'];
2504                 $photo = ($pub_contact['avatar'] ?? '') ?: $pub_contact["photo"];
2505                 $nick = $pub_contact['nick'];
2506                 $network = $pub_contact['network'];
2507
2508                 // Ensure that we don't create a new contact when there already is one
2509                 $cid = self::getIdForURL($url, $importer['uid']);
2510                 if (!empty($cid)) {
2511                         $contact = DBA::selectFirst('contact', [], ['id' => $cid]);
2512                 }
2513
2514                 if (!empty($contact)) {
2515                         if (!empty($contact['pending'])) {
2516                                 Logger::info('Pending contact request already exists.', ['url' => $url, 'uid' => $importer['uid']]);
2517                                 return null;
2518                         }
2519
2520                         // Contact is blocked at user-level
2521                         if (!empty($contact['id']) && !empty($importer['id']) &&
2522                                 self::isBlockedByUser($contact['id'], $importer['id'])) {
2523                                 return false;
2524                         }
2525
2526                         // Make sure that the existing contact isn't archived
2527                         self::unmarkForArchival($contact);
2528
2529                         if (($contact['rel'] == self::SHARING)
2530                                 || ($sharing && $contact['rel'] == self::FOLLOWER)) {
2531                                 DBA::update('contact', ['rel' => self::FRIEND, 'writable' => true, 'pending' => false],
2532                                                 ['id' => $contact['id'], 'uid' => $importer['uid']]);
2533                         }
2534
2535                         // Ensure to always have the correct network type, independent from the connection request method
2536                         self::updateFromProbe($contact['id'], '', true);
2537
2538                         return true;
2539                 } else {
2540                         // send email notification to owner?
2541                         if (DBA::exists('contact', ['nurl' => Strings::normaliseLink($url), 'uid' => $importer['uid'], 'pending' => true])) {
2542                                 Logger::log('ignoring duplicated connection request from pending contact ' . $url);
2543                                 return null;
2544                         }
2545
2546                         // create contact record
2547                         DBA::insert('contact', [
2548                                 'uid'      => $importer['uid'],
2549                                 'created'  => DateTimeFormat::utcNow(),
2550                                 'url'      => $url,
2551                                 'nurl'     => Strings::normaliseLink($url),
2552                                 'name'     => $name,
2553                                 'nick'     => $nick,
2554                                 'photo'    => $photo,
2555                                 'network'  => $network,
2556                                 'rel'      => self::FOLLOWER,
2557                                 'blocked'  => 0,
2558                                 'readonly' => 0,
2559                                 'pending'  => 1,
2560                                 'writable' => 1,
2561                         ]);
2562
2563                         $contact_id = DBA::lastInsertId();
2564
2565                         // Ensure to always have the correct network type, independent from the connection request method
2566                         self::updateFromProbe($contact_id, '', true);
2567
2568                         Contact::updateAvatar($photo, $importer["uid"], $contact_id, true);
2569
2570                         $contact_record = DBA::selectFirst('contact', ['id', 'network', 'name', 'url', 'photo'], ['id' => $contact_id]);
2571
2572                         /// @TODO Encapsulate this into a function/method
2573                         $fields = ['uid', 'username', 'email', 'page-flags', 'notify-flags', 'language'];
2574                         $user = DBA::selectFirst('user', $fields, ['uid' => $importer['uid']]);
2575                         if (DBA::isResult($user) && !in_array($user['page-flags'], [User::PAGE_FLAGS_SOAPBOX, User::PAGE_FLAGS_FREELOVE, User::PAGE_FLAGS_COMMUNITY])) {
2576                                 // create notification
2577                                 $hash = Strings::getRandomHex();
2578
2579                                 if (is_array($contact_record)) {
2580                                         DBA::insert('intro', ['uid' => $importer['uid'], 'contact-id' => $contact_record['id'],
2581                                                                 'blocked' => false, 'knowyou' => false, 'note' => $note,
2582                                                                 'hash' => $hash, 'datetime' => DateTimeFormat::utcNow()]);
2583                                 }
2584
2585                                 Group::addMember(User::getDefaultGroup($importer['uid'], $contact_record["network"]), $contact_record['id']);
2586
2587                                 if (($user['notify-flags'] & NOTIFY_INTRO) &&
2588                                         in_array($user['page-flags'], [User::PAGE_FLAGS_NORMAL])) {
2589
2590                                         notification([
2591                                                 'type'         => NOTIFY_INTRO,
2592                                                 'notify_flags' => $user['notify-flags'],
2593                                                 'language'     => $user['language'],
2594                                                 'to_name'      => $user['username'],
2595                                                 'to_email'     => $user['email'],
2596                                                 'uid'          => $user['uid'],
2597                                                 'link'         => System::baseUrl() . '/notifications/intro',
2598                                                 'source_name'  => ((strlen(stripslashes($contact_record['name']))) ? stripslashes($contact_record['name']) : L10n::t('[Name Withheld]')),
2599                                                 'source_link'  => $contact_record['url'],
2600                                                 'source_photo' => $contact_record['photo'],
2601                                                 'verb'         => ($sharing ? Activity::FRIEND : Activity::FOLLOW),
2602                                                 'otype'        => 'intro'
2603                                         ]);
2604                                 }
2605                         } elseif (DBA::isResult($user) && in_array($user['page-flags'], [User::PAGE_FLAGS_SOAPBOX, User::PAGE_FLAGS_FREELOVE, User::PAGE_FLAGS_COMMUNITY])) {
2606                                 $condition = ['uid' => $importer['uid'], 'url' => $url, 'pending' => true];
2607                                 DBA::update('contact', ['pending' => false], $condition);
2608
2609                                 return true;
2610                         }
2611                 }
2612
2613                 return null;
2614         }
2615
2616         public static function removeFollower($importer, $contact, array $datarray = [], $item = "")
2617         {
2618                 if (($contact['rel'] == self::FRIEND) || ($contact['rel'] == self::SHARING)) {
2619                         DBA::update('contact', ['rel' => self::SHARING], ['id' => $contact['id']]);
2620                 } else {
2621                         Contact::remove($contact['id']);
2622                 }
2623         }
2624
2625         public static function removeSharer($importer, $contact, array $datarray = [], $item = "")
2626         {
2627                 if (($contact['rel'] == self::FRIEND) || ($contact['rel'] == self::FOLLOWER)) {
2628                         DBA::update('contact', ['rel' => self::FOLLOWER], ['id' => $contact['id']]);
2629                 } else {
2630                         Contact::remove($contact['id']);
2631                 }
2632         }
2633
2634         /**
2635          * @brief Create a birthday event.
2636          *
2637          * Update the year and the birthday.
2638          */
2639         public static function updateBirthdays()
2640         {
2641                 $condition = [
2642                         '`bd` != ""
2643                         AND `bd` > "0001-01-01"
2644                         AND SUBSTRING(`bd`, 1, 4) != `bdyear`
2645                         AND (`contact`.`rel` = ? OR `contact`.`rel` = ?)
2646                         AND NOT `contact`.`pending`
2647                         AND NOT `contact`.`hidden`
2648                         AND NOT `contact`.`blocked`
2649                         AND NOT `contact`.`archive`
2650                         AND NOT `contact`.`deleted`',
2651                         Contact::SHARING,
2652                         Contact::FRIEND
2653                 ];
2654
2655                 $contacts = DBA::select('contact', ['id', 'uid', 'name', 'url', 'bd'], $condition);
2656
2657                 while ($contact = DBA::fetch($contacts)) {
2658                         Logger::log('update_contact_birthday: ' . $contact['bd']);
2659
2660                         $nextbd = DateTimeFormat::utcNow('Y') . substr($contact['bd'], 4);
2661
2662                         if (Event::createBirthday($contact, $nextbd)) {
2663                                 // update bdyear
2664                                 DBA::update(
2665                                         'contact',
2666                                         ['bdyear' => substr($nextbd, 0, 4), 'bd' => $nextbd],
2667                                         ['id' => $contact['id']]
2668                                 );
2669                         }
2670                 }
2671         }
2672
2673         /**
2674          * Remove the unavailable contact ids from the provided list
2675          *
2676          * @param array $contact_ids Contact id list
2677          * @throws \Exception
2678          */
2679         public static function pruneUnavailable(array &$contact_ids)
2680         {
2681                 if (empty($contact_ids)) {
2682                         return;
2683                 }
2684
2685                 $str = DBA::escape(implode(',', $contact_ids));
2686
2687                 $stmt = DBA::p("SELECT `id` FROM `contact` WHERE `id` IN ( " . $str . ") AND `blocked` = 0 AND `pending` = 0 AND `archive` = 0");
2688
2689                 $return = [];
2690                 while($contact = DBA::fetch($stmt)) {
2691                         $return[] = $contact['id'];
2692                 }
2693
2694                 DBA::close($stmt);
2695
2696                 $contact_ids = $return;
2697         }
2698
2699         /**
2700          * @brief Returns a magic link to authenticate remote visitors
2701          *
2702          * @todo  check if the return is either a fully qualified URL or a relative path to Friendica basedir
2703          *
2704          * @param string $contact_url The address of the target contact profile
2705          * @param string $url         An url that we will be redirected to after the authentication
2706          *
2707          * @return string with "redir" link
2708          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2709          * @throws \ImagickException
2710          */
2711         public static function magicLink($contact_url, $url = '')
2712         {
2713                 if (!Session::isAuthenticated()) {
2714                         return $url ?: $contact_url; // Equivalent to: ($url != '') ? $url : $contact_url;
2715                 }
2716
2717                 $data = self::getProbeDataFromDatabase($contact_url);
2718                 if (empty($data)) {
2719                         return $url ?: $contact_url; // Equivalent to: ($url != '') ? $url : $contact_url;
2720                 }
2721
2722                 // Prevents endless loop in case only a non-public contact exists for the contact URL
2723                 unset($data['uid']);
2724
2725                 return self::magicLinkByContact($data, $url ?: $contact_url);
2726         }
2727
2728         /**
2729          * @brief Returns a magic link to authenticate remote visitors
2730          *
2731          * @param integer $cid The contact id of the target contact profile
2732          * @param string  $url An url that we will be redirected to after the authentication
2733          *
2734          * @return string with "redir" link
2735          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2736          * @throws \ImagickException
2737          */
2738         public static function magicLinkbyId($cid, $url = '')
2739         {
2740                 $contact = DBA::selectFirst('contact', ['id', 'network', 'url', 'uid'], ['id' => $cid]);
2741
2742                 return self::magicLinkByContact($contact, $url);
2743         }
2744
2745         /**
2746          * @brief Returns a magic link to authenticate remote visitors
2747          *
2748          * @param array  $contact The contact array with "uid", "network" and "url"
2749          * @param string $url     An url that we will be redirected to after the authentication
2750          *
2751          * @return string with "redir" link
2752          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2753          * @throws \ImagickException
2754          */
2755         public static function magicLinkByContact($contact, $url = '')
2756         {
2757                 $destination = $url ?: $contact['url']; // Equivalent to ($url != '') ? $url : $contact['url'];
2758
2759                 if (!Session::isAuthenticated() || ($contact['network'] != Protocol::DFRN)) {
2760                         return $destination;
2761                 }
2762
2763                 // Only redirections to the same host do make sense
2764                 if (($url != '') && (parse_url($url, PHP_URL_HOST) != parse_url($contact['url'], PHP_URL_HOST))) {
2765                         return $url;
2766                 }
2767
2768                 if (!empty($contact['uid'])) {
2769                         return self::magicLink($contact['url'], $url);
2770                 }
2771
2772                 if (empty($contact['id'])) {
2773                         return $destination;
2774                 }
2775
2776                 $redirect = 'redir/' . $contact['id'];
2777
2778                 if (($url != '') && !Strings::compareLink($contact['url'], $url)) {
2779                         $redirect .= '?url=' . $url;
2780                 }
2781
2782                 return $redirect;
2783         }
2784
2785         /**
2786          * Remove a contact from all groups
2787          *
2788          * @param integer $contact_id
2789          *
2790          * @return boolean Success
2791          */
2792         public static function removeFromGroups($contact_id)
2793         {
2794                 return DBA::delete('group_member', ['contact-id' => $contact_id]);
2795         }
2796
2797         /**
2798          * Is the contact a forum?
2799          *
2800          * @param integer $contactid ID of the contact
2801          *
2802          * @return boolean "true" if it is a forum
2803          */
2804         public static function isForum($contactid)
2805         {
2806                 $fields = ['forum', 'prv'];
2807                 $condition = ['id' => $contactid];
2808                 $contact = DBA::selectFirst('contact', $fields, $condition);
2809                 if (!DBA::isResult($contact)) {
2810                         return false;
2811                 }
2812
2813                 // Is it a forum?
2814                 return ($contact['forum'] || $contact['prv']);
2815         }
2816
2817         /**
2818          * Can the remote contact receive private messages?
2819          *
2820          * @param array $contact
2821          * @return bool
2822          */
2823         public static function canReceivePrivateMessages(array $contact)
2824         {
2825                 $protocol = $contact['network'] ?? $contact['protocol'] ?? Protocol::PHANTOM;
2826                 $self = $contact['self'] ?? false;
2827
2828                 return in_array($protocol, [Protocol::DFRN, Protocol::DIASPORA, Protocol::ACTIVITYPUB]) && !$self;
2829         }
2830 }