src/Model/Contact.php

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