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