src/Protocol/OStatus.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2022, the Friendica project
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 namespace Friendica\Protocol;
  23
  24 use DOMDocument;
  25 use DOMXPath;
  26 use Friendica\Content\Text\BBCode;
  27 use Friendica\Content\Text\HTML;
  28 use Friendica\Core\Cache\Enum\Duration;
  29 use Friendica\Core\Logger;
  30 use Friendica\Core\Protocol;
  31 use Friendica\Database\DBA;
  32 use Friendica\DI;
  33 use Friendica\Model\APContact;
  34 use Friendica\Model\Contact;
  35 use Friendica\Model\Conversation;
  36 use Friendica\Model\Item;
  37 use Friendica\Model\ItemURI;
  38 use Friendica\Model\Post;
  39 use Friendica\Model\Tag;
  40 use Friendica\Model\User;
  41 use Friendica\Network\HTTPClient\Client\HttpClientAccept;
  42 use Friendica\Network\Probe;
  43 use Friendica\Util\DateTimeFormat;
  44 use Friendica\Util\Images;
  45 use Friendica\Util\Proxy;
  46 use Friendica\Util\Strings;
  47 use Friendica\Util\XML;
  48
  49 /**
  50  * This class contain functions for the OStatus protocol
  51  */
  52 class OStatus
  53 {
  54         private static $itemlist;
  55         private static $conv_list = [];
  56
  57         /**
  58          * Fetches author data
  59          *
  60          * @param DOMXPath $xpath     The xpath object
  61          * @param object   $context   The xml context of the author details
  62          * @param array    $importer  user record of the importing user
  63          * @param array    $contact   Called by reference, will contain the fetched contact
  64          * @param bool     $onlyfetch Only fetch the header without updating the contact entries
  65          *
  66          * @return array Array of author related entries for the item
  67          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
  68          * @throws \ImagickException
  69          */
  70         private static function fetchAuthor(DOMXPath $xpath, $context, array $importer, array &$contact = null, $onlyfetch)
  71         {
  72                 $author = [];
  73                 $author["author-link"] = XML::getFirstNodeValue($xpath, 'atom:author/atom:uri/text()', $context);
  74                 $author["author-name"] = XML::getFirstNodeValue($xpath, 'atom:author/atom:name/text()', $context);
  75                 $addr = XML::getFirstNodeValue($xpath, 'atom:author/atom:email/text()', $context);
  76
  77                 $aliaslink = $author["author-link"];
  78
  79                 $alternate_item = $xpath->query("atom:author/atom:link[@rel='alternate']", $context)->item(0);
  80                 if (is_object($alternate_item)) {
  81                         foreach ($alternate_item->attributes as $attributes) {
  82                                 if (($attributes->name == "href") && ($attributes->textContent != "")) {
  83                                         $author["author-link"] = $attributes->textContent;
  84                                 }
  85                         }
  86                 }
  87                 $author["author-id"] = Contact::getIdForURL($author["author-link"]);
  88
  89                 $author['contact-id'] = ($contact['id'] ?? 0) ?: $author['author-id'];
  90
  91                 $contact = [];
  92
  93 /*
  94                 This here would be better, but we would get problems with contacts from the statusnet addon
  95                 This is kept here as a reminder for the future
  96
  97                 $cid = Contact::getIdForURL($author["author-link"], $importer["uid"]);
  98                 if ($cid) {
  99                         $contact = DBA::selectFirst('contact', [], ['id' => $cid]);
 100                 }
 101 */
 102                 if ($aliaslink != '') {
 103                         $condition = ["`uid` = ? AND `alias` = ? AND `network` != ? AND `rel` IN (?, ?)",
 104                                         $importer["uid"], $aliaslink, Protocol::STATUSNET,
 105                                         Contact::SHARING, Contact::FRIEND];
 106                         $contact = DBA::selectFirst('contact', [], $condition);
 107                 }
 108
 109                 if (!DBA::isResult($contact) && $author["author-link"] != '') {
 110                         if ($aliaslink == "") {
 111                                 $aliaslink = $author["author-link"];
 112                         }
 113
 114                         $condition = ["`uid` = ? AND `nurl` IN (?, ?) AND `network` != ? AND `rel` IN (?, ?)",
 115                                         $importer["uid"], Strings::normaliseLink($author["author-link"]), Strings::normaliseLink($aliaslink),
 116                                         Protocol::STATUSNET, Contact::SHARING, Contact::FRIEND];
 117                         $contact = DBA::selectFirst('contact', [], $condition);
 118                 }
 119
 120                 if (!DBA::isResult($contact) && ($addr != '')) {
 121                         $condition = ["`uid` = ? AND `addr` = ? AND `network` != ? AND `rel` IN (?, ?)",
 122                                         $importer["uid"], $addr, Protocol::STATUSNET,
 123                                         Contact::SHARING, Contact::FRIEND];
 124                         $contact = DBA::selectFirst('contact', [], $condition);
 125                 }
 126
 127                 if (DBA::isResult($contact)) {
 128                         if ($contact['blocked']) {
 129                                 $contact['id'] = -1;
 130                         } elseif (!empty(APContact::getByURL($contact['url'], false))) {
 131                                 ActivityPub\Receiver::switchContact($contact['id'], $importer['uid'], $contact['url']);
 132                         }
 133                         $author["contact-id"] = $contact["id"];
 134                 }
 135
 136                 $avatarlist = [];
 137                 $avatars = $xpath->query("atom:author/atom:link[@rel='avatar']", $context);
 138                 foreach ($avatars as $avatar) {
 139                         $href = "";
 140                         $width = 0;
 141                         foreach ($avatar->attributes as $attributes) {
 142                                 if ($attributes->name == "href") {
 143                                         $href = $attributes->textContent;
 144                                 }
 145                                 if ($attributes->name == "width") {
 146                                         $width = $attributes->textContent;
 147                                 }
 148                         }
 149                         if ($href != "") {
 150                                 $avatarlist[$width] = $href;
 151                         }
 152                 }
 153                 if (count($avatarlist) > 0) {
 154                         krsort($avatarlist);
 155                         $author["author-avatar"] = Probe::fixAvatar(current($avatarlist), $author["author-link"]);
 156                 }
 157
 158                 $displayname = XML::getFirstNodeValue($xpath, 'atom:author/poco:displayName/text()', $context);
 159                 if ($displayname != "") {
 160                         $author["author-name"] = $displayname;
 161                 }
 162
 163                 $author["owner-id"] = $author["author-id"];
 164
 165                 // Only update the contacts if it is an OStatus contact
 166                 if (DBA::isResult($contact) && ($contact['id'] > 0) && !$onlyfetch && ($contact["network"] == Protocol::OSTATUS)) {
 167
 168                         // Update contact data
 169                         $current = $contact;
 170                         unset($current['name-date']);
 171
 172                         // This query doesn't seem to work
 173                         // $value = $xpath->query("atom:link[@rel='salmon']", $context)->item(0)->nodeValue;
 174                         // if ($value != "")
 175                         //      $contact["notify"] = $value;
 176
 177                         // This query doesn't seem to work as well - I hate these queries
 178                         // $value = $xpath->query("atom:link[@rel='self' and @type='application/atom+xml']", $context)->item(0)->nodeValue;
 179                         // if ($value != "")
 180                         //      $contact["poll"] = $value;
 181
 182                         $contact['url'] = $author["author-link"];
 183                         $contact['nurl'] = Strings::normaliseLink($contact['url']);
 184
 185                         $value = XML::getFirstNodeValue($xpath, 'atom:author/atom:uri/text()', $context);
 186                         if ($value != "") {
 187                                 $contact["alias"] = $value;
 188                         }
 189
 190                         $value = XML::getFirstNodeValue($xpath, 'atom:author/poco:displayName/text()', $context);
 191                         if ($value != "") {
 192                                 $contact["name"] = $value;
 193                         }
 194
 195                         $value = XML::getFirstNodeValue($xpath, 'atom:author/poco:preferredUsername/text()', $context);
 196                         if ($value != "") {
 197                                 $contact["nick"] = $value;
 198                         }
 199
 200                         $value = XML::getFirstNodeValue($xpath, 'atom:author/poco:note/text()', $context);
 201                         if ($value != "") {
 202                                 $contact["about"] = HTML::toBBCode($value);
 203                         }
 204
 205                         $value = XML::getFirstNodeValue($xpath, 'atom:author/poco:address/poco:formatted/text()', $context);
 206                         if ($value != "") {
 207                                 $contact["location"] = $value;
 208                         }
 209
 210                         $contact['name-date'] = DateTimeFormat::utcNow();
 211
 212                         Contact::update($contact, ['id' => $contact["id"]], $current);
 213
 214                         if (!empty($author["author-avatar"]) && ($author["author-avatar"] != $current['avatar'])) {
 215                                 Logger::info("Update profile picture for contact ".$contact["id"]);
 216                                 Contact::updateAvatar($contact["id"], $author["author-avatar"]);
 217                         }
 218
 219                         // Ensure that we are having this contact (with uid=0)
 220                         $cid = Contact::getIdForURL($aliaslink);
 221
 222                         if ($cid) {
 223                                 $fields = ['url', 'nurl', 'name', 'nick', 'alias', 'about', 'location'];
 224                                 $old_contact = DBA::selectFirst('contact', $fields, ['id' => $cid]);
 225
 226                                 // Update it with the current values
 227                                 $fields = ['url' => $author["author-link"], 'name' => $contact["name"],
 228                                                 'nurl' => Strings::normaliseLink($author["author-link"]),
 229                                                 'nick' => $contact["nick"], 'alias' => $contact["alias"],
 230                                                 'about' => $contact["about"], 'location' => $contact["location"],
 231                                                 'success_update' => DateTimeFormat::utcNow(), 'last-update' => DateTimeFormat::utcNow()];
 232
 233                                 Contact::update($fields, ['id' => $cid], $old_contact);
 234
 235                                 // Update the avatar
 236                                 if (!empty($author["author-avatar"])) {
 237                                         Contact::updateAvatar($cid, $author["author-avatar"]);
 238                                 }
 239                         }
 240                 } elseif (empty($contact["network"]) || ($contact["network"] != Protocol::DFRN)) {
 241                         $contact = [];
 242                 }
 243
 244                 return $author;
 245         }
 246
 247         /**
 248          * Fetches author data from a given XML string
 249          *
 250          * @param string $xml      The XML
 251          * @param array  $importer user record of the importing user
 252          *
 253          * @return array Array of author related entries for the item
 254          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 255          * @throws \ImagickException
 256          */
 257         public static function salmonAuthor($xml, array $importer)
 258         {
 259                 if ($xml == "") {
 260                         return;
 261                 }
 262
 263                 $doc = new DOMDocument();
 264                 @$doc->loadXML($xml);
 265
 266                 $xpath = new DOMXPath($doc);
 267                 $xpath->registerNamespace('atom', ActivityNamespace::ATOM1);
 268                 $xpath->registerNamespace('thr', ActivityNamespace::THREAD);
 269                 $xpath->registerNamespace('georss', ActivityNamespace::GEORSS);
 270                 $xpath->registerNamespace('activity', ActivityNamespace::ACTIVITY);
 271                 $xpath->registerNamespace('media', ActivityNamespace::MEDIA);
 272                 $xpath->registerNamespace('poco', ActivityNamespace::POCO);
 273                 $xpath->registerNamespace('ostatus', ActivityNamespace::OSTATUS);
 274                 $xpath->registerNamespace('statusnet', ActivityNamespace::STATUSNET);
 275
 276                 $contact = ["id" => 0];
 277
 278                 // Fetch the first author
 279                 $authordata = $xpath->query('//author')->item(0);
 280                 $author = self::fetchAuthor($xpath, $authordata, $importer, $contact, true);
 281                 return $author;
 282         }
 283
 284         /**
 285          * Read attributes from element
 286          *
 287          * @param object $element Element object
 288          *
 289          * @return array attributes
 290          */
 291         private static function readAttributes($element)
 292         {
 293                 $attribute = [];
 294
 295                 foreach ($element->attributes as $attributes) {
 296                         $attribute[$attributes->name] = $attributes->textContent;
 297                 }
 298
 299                 return $attribute;
 300         }
 301
 302         /**
 303          * Imports an XML string containing OStatus elements
 304          *
 305          * @param string $xml      The XML
 306          * @param array  $importer user record of the importing user
 307          * @param array  $contact  contact
 308          * @param string $hub      Called by reference, returns the fetched hub data
 309          * @return void
 310          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 311          * @throws \ImagickException
 312          */
 313         public static function import($xml, array $importer, array &$contact, &$hub)
 314         {
 315                 self::process($xml, $importer, $contact, $hub, false, true, Conversation::PUSH);
 316         }
 317
 318         /**
 319          * Internal feed processing
 320          *
 321          * @param string  $xml        The XML
 322          * @param array   $importer   user record of the importing user
 323          * @param array   $contact    contact
 324          * @param string  $hub        Called by reference, returns the fetched hub data
 325          * @param boolean $stored     Is the post fresh imported or from the database?
 326          * @param boolean $initialize Is it the leading post so that data has to be initialized?
 327          *
 328          * @return boolean Could the XML be processed?
 329          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 330          * @throws \ImagickException
 331          */
 332         private static function process($xml, array $importer, array &$contact = null, &$hub, $stored = false, $initialize = true, $direction = Conversation::UNKNOWN)
 333         {
 334                 if ($initialize) {
 335                         self::$itemlist = [];
 336                         self::$conv_list = [];
 337                 }
 338
 339                 Logger::info('Import OStatus message for user ' . $importer['uid']);
 340
 341                 if ($xml == "") {
 342                         return false;
 343                 }
 344                 $doc = new DOMDocument();
 345                 @$doc->loadXML($xml);
 346
 347                 $xpath = new DOMXPath($doc);
 348                 $xpath->registerNamespace('atom', ActivityNamespace::ATOM1);
 349                 $xpath->registerNamespace('thr', ActivityNamespace::THREAD);
 350                 $xpath->registerNamespace('georss', ActivityNamespace::GEORSS);
 351                 $xpath->registerNamespace('activity', ActivityNamespace::ACTIVITY);
 352                 $xpath->registerNamespace('media', ActivityNamespace::MEDIA);
 353                 $xpath->registerNamespace('poco', ActivityNamespace::POCO);
 354                 $xpath->registerNamespace('ostatus', ActivityNamespace::OSTATUS);
 355                 $xpath->registerNamespace('statusnet', ActivityNamespace::STATUSNET);
 356
 357                 $hub = "";
 358                 $hub_items = $xpath->query("/atom:feed/atom:link[@rel='hub']")->item(0);
 359                 if (is_object($hub_items)) {
 360                         $hub_attributes = $hub_items->attributes;
 361                         if (is_object($hub_attributes)) {
 362                                 foreach ($hub_attributes as $hub_attribute) {
 363                                         if ($hub_attribute->name == "href") {
 364                                                 $hub = $hub_attribute->textContent;
 365                                                 Logger::info("Found hub ".$hub);
 366                                         }
 367                                 }
 368                         }
 369                 }
 370
 371                 $header = [];
 372                 $header["uid"] = $importer["uid"];
 373                 $header["network"] = Protocol::OSTATUS;
 374                 $header["wall"] = 0;
 375                 $header["origin"] = 0;
 376                 $header["gravity"] = GRAVITY_COMMENT;
 377
 378                 if (!is_object($doc->firstChild) || empty($doc->firstChild->tagName)) {
 379                         return false;
 380                 }
 381
 382                 $first_child = $doc->firstChild->tagName;
 383
 384                 if ($first_child == "feed") {
 385                         $entries = $xpath->query('/atom:feed/atom:entry');
 386                 } else {
 387                         $entries = $xpath->query('/atom:entry');
 388                 }
 389
 390                 if ($entries->length == 1) {
 391                         // We reformat the XML to make it better readable
 392                         $doc2 = new DOMDocument();
 393                         $doc2->loadXML($xml);
 394                         $doc2->preserveWhiteSpace = false;
 395                         $doc2->formatOutput = true;
 396                         $xml2 = $doc2->saveXML();
 397
 398                         $header["protocol"] = Conversation::PARCEL_SALMON;
 399                         $header["source"] = $xml2;
 400                         $header["direction"] = $direction;
 401                 } elseif (!$initialize) {
 402                         return false;
 403                 }
 404
 405                 // Fetch the first author
 406                 $authordata = $xpath->query('//author')->item(0);
 407                 $author = self::fetchAuthor($xpath, $authordata, $importer, $contact, $stored);
 408
 409                 // Reverse the order of the entries
 410                 $entrylist = [];
 411
 412                 foreach ($entries as $entry) {
 413                         $entrylist[] = $entry;
 414                 }
 415
 416                 foreach (array_reverse($entrylist) as $entry) {
 417                         // fetch the author
 418                         $authorelement = $xpath->query('/atom:entry/atom:author', $entry);
 419
 420                         if ($authorelement->length == 0) {
 421                                 $authorelement = $xpath->query('atom:author', $entry);
 422                         }
 423
 424                         if ($authorelement->length > 0) {
 425                                 $author = self::fetchAuthor($xpath, $entry, $importer, $contact, $stored);
 426                         }
 427
 428                         $item = array_merge($header, $author);
 429
 430                         $item["uri"] = XML::getFirstNodeValue($xpath, 'atom:id/text()', $entry);
 431                         $item['uri-id'] = ItemURI::insert(['uri' => $item['uri']]);
 432
 433                         $item["verb"] = XML::getFirstNodeValue($xpath, 'activity:verb/text()', $entry);
 434
 435                         // Delete a message
 436                         if (in_array($item["verb"], ['qvitter-delete-notice', Activity::DELETE, 'delete'])) {
 437                                 self::deleteNotice($item);
 438                                 continue;
 439                         }
 440
 441                         if (in_array($item["verb"], [Activity::O_UNFAVOURITE, Activity::UNFAVORITE])) {
 442                                 // Ignore "Unfavorite" message
 443                                 Logger::info("Ignore unfavorite message ", ['item' => $item]);
 444                                 continue;
 445                         }
 446
 447                         // Deletions come with the same uri, so we check for duplicates after processing deletions
 448                         if (Post::exists(['uid' => $importer["uid"], 'uri' => $item["uri"]])) {
 449                                 Logger::info('Post with URI '.$item["uri"].' already existed for user '.$importer["uid"].'.');
 450                                 continue;
 451                         } else {
 452                                 Logger::info('Processing post with URI '.$item["uri"].' for user '.$importer["uid"].'.');
 453                         }
 454
 455                         if ($item["verb"] == Activity::JOIN) {
 456                                 // ignore "Join" messages
 457                                 Logger::info("Ignore join message ", ['item' => $item]);
 458                                 continue;
 459                         }
 460
 461                         if ($item["verb"] == "http://mastodon.social/schema/1.0/block") {
 462                                 // ignore mastodon "block" messages
 463                                 Logger::info("Ignore block message ", ['item' => $item]);
 464                                 continue;
 465                         }
 466
 467                         if ($item["verb"] == Activity::FOLLOW) {
 468                                 Contact::addRelationship($importer, $contact, $item);
 469                                 continue;
 470                         }
 471
 472                         if ($item["verb"] == Activity::O_UNFOLLOW) {
 473                                 $dummy = null;
 474                                 Contact::removeFollower($contact);
 475                                 continue;
 476                         }
 477
 478                         if ($item["verb"] == Activity::FAVORITE) {
 479                                 $orig_uri = $xpath->query("activity:object/atom:id", $entry)->item(0)->nodeValue;
 480                                 Logger::notice("Favorite", ['uri' => $orig_uri, 'item' => $item]);
 481
 482                                 $item["verb"] = Activity::LIKE;
 483                                 $item["thr-parent"] = $orig_uri;
 484                                 $item["gravity"] = GRAVITY_ACTIVITY;
 485                                 $item["object-type"] = Activity\ObjectType::NOTE;
 486                         }
 487
 488                         // http://activitystrea.ms/schema/1.0/rsvp-yes
 489                         if (!in_array($item["verb"], [Activity::POST, Activity::LIKE, Activity::SHARE])) {
 490                                 Logger::info("Unhandled verb", ['verb' => $item["verb"], 'item' => $item]);
 491                         }
 492
 493                         self::processPost($xpath, $entry, $item, $importer);
 494
 495                         if ($initialize && (count(self::$itemlist) > 0)) {
 496                                 if (self::$itemlist[0]['uri'] == self::$itemlist[0]['thr-parent']) {
 497                                         $uid = self::$itemlist[0]['uid'];
 498                                         // We will import it everytime, when it is started by our contacts
 499                                         $valid = Contact::isSharingByURL(self::$itemlist[0]['author-link'], $uid);
 500
 501                                         if (!$valid) {
 502                                                 // If not, then it depends on this setting
 503                                                 $valid = !$uid || DI::pConfig()->get($uid, 'system', 'accept_only_sharer') != Item::COMPLETION_NONE;
 504
 505                                                 if ($valid) {
 506                                                         Logger::info("Item with uri ".self::$itemlist[0]['uri']." will be imported due to the system settings.");
 507                                                 }
 508                                         } else {
 509                                                 Logger::info("Item with uri ".self::$itemlist[0]['uri']." belongs to a contact (".self::$itemlist[0]['contact-id']."). It will be imported.");
 510                                         }
 511
 512                                         if ($valid && DI::pConfig()->get($uid, 'system', 'accept_only_sharer') != Item::COMPLETION_LIKE) {
 513                                                 // Never post a thread when the only interaction by our contact was a like
 514                                                 $valid = false;
 515                                                 $verbs = [Activity::POST, Activity::SHARE];
 516                                                 foreach (self::$itemlist as $item) {
 517                                                         if (in_array($item['verb'], $verbs) && Contact::isSharingByURL($item['author-link'], $item['uid'])) {
 518                                                                 $valid = true;
 519                                                         }
 520                                                 }
 521                                                 if ($valid) {
 522                                                         Logger::info("Item with uri ".self::$itemlist[0]['uri']." will be imported since the thread contains posts or shares.");
 523                                                 }
 524                                         }
 525                                 } else {
 526                                         $valid = true;
 527                                 }
 528
 529                                 if ($valid) {
 530                                         $default_contact = 0;
 531                                         for ($key = count(self::$itemlist) - 1; $key >= 0; $key--) {
 532                                                 if (empty(self::$itemlist[$key]['contact-id'])) {
 533                                                         self::$itemlist[$key]['contact-id'] = $default_contact;
 534                                                 } else {
 535                                                         $default_contact = $item['contact-id'];
 536                                                 }
 537                                         }
 538                                         foreach (self::$itemlist as $item) {
 539                                                 $found = Post::exists(['uid' => $importer["uid"], 'uri' => $item["uri"]]);
 540                                                 if ($found) {
 541                                                         Logger::notice("Item with uri ".$item["uri"]." for user ".$importer["uid"]." already exists.");
 542                                                 } elseif ($item['contact-id'] < 0) {
 543                                                         Logger::notice("Item with uri ".$item["uri"]." is from a blocked contact.");
 544                                                 } else {
 545                                                         $ret = Item::insert($item);
 546                                                         Logger::info("Item with uri ".$item["uri"]." for user ".$importer["uid"].' stored. Return value: '.$ret);
 547                                                 }
 548                                         }
 549                                 }
 550                                 self::$itemlist = [];
 551                         }
 552                         Logger::info('Processing done for post with URI '.$item["uri"].' for user '.$importer["uid"].'.');
 553                 }
 554                 return true;
 555         }
 556
 557         /**
 558          * Removes notice item from database
 559          *
 560          * @param array $item item
 561          * @return void
 562          * @throws \Exception
 563          */
 564         private static function deleteNotice(array $item)
 565         {
 566                 $condition = ['uid' => $item['uid'], 'author-id' => $item['author-id'], 'uri' => $item['uri']];
 567                 if (!Post::exists($condition)) {
 568                         Logger::notice('Item from '.$item['author-link'].' with uri '.$item['uri'].' for user '.$item['uid']." wasn't found. We don't delete it.");
 569                         return;
 570                 }
 571
 572                 Item::markForDeletion($condition);
 573
 574                 Logger::notice('Deleted item with uri '.$item['uri'].' for user '.$item['uid']);
 575         }
 576
 577         /**
 578          * Processes the XML for a post
 579          *
 580          * @param DOMXPath $xpath    The xpath object
 581          * @param object   $entry    The xml entry that is processed
 582          * @param array    $item     The item array
 583          * @param array    $importer user record of the importing user
 584          * @return void
 585          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 586          * @throws \ImagickException
 587          */
 588         private static function processPost(DOMXPath $xpath, $entry, array &$item, array $importer)
 589         {
 590                 $item["body"] = HTML::toBBCode(XML::getFirstNodeValue($xpath, 'atom:content/text()', $entry));
 591                 $item["object-type"] = XML::getFirstNodeValue($xpath, 'activity:object-type/text()', $entry);
 592                 if (($item["object-type"] == Activity\ObjectType::BOOKMARK) || ($item["object-type"] == Activity\ObjectType::EVENT)) {
 593                         $item["title"] = XML::getFirstNodeValue($xpath, 'atom:title/text()', $entry);
 594                         $item["body"] = XML::getFirstNodeValue($xpath, 'atom:summary/text()', $entry);
 595                 } elseif ($item["object-type"] == Activity\ObjectType::QUESTION) {
 596                         $item["title"] = XML::getFirstNodeValue($xpath, 'atom:title/text()', $entry);
 597                 }
 598
 599                 $item["created"] = XML::getFirstNodeValue($xpath, 'atom:published/text()', $entry);
 600                 $item["edited"] = XML::getFirstNodeValue($xpath, 'atom:updated/text()', $entry);
 601                 $item['conversation-uri'] = XML::getFirstNodeValue($xpath, 'ostatus:conversation/text()', $entry);
 602
 603                 $conv = $xpath->query('ostatus:conversation', $entry);
 604                 if (is_object($conv->item(0))) {
 605                         foreach ($conv->item(0)->attributes as $attributes) {
 606                                 if ($attributes->name == "ref") {
 607                                         $item['conversation-uri'] = $attributes->textContent;
 608                                 }
 609                                 if ($attributes->name == "href") {
 610                                         $item['conversation-href'] = $attributes->textContent;
 611                                 }
 612                         }
 613                 }
 614
 615                 $related = "";
 616
 617                 $inreplyto = $xpath->query('thr:in-reply-to', $entry);
 618                 if (is_object($inreplyto->item(0))) {
 619                         foreach ($inreplyto->item(0)->attributes as $attributes) {
 620                                 if ($attributes->name == "ref") {
 621                                         $item["thr-parent"] = $attributes->textContent;
 622                                 }
 623                                 if ($attributes->name == "href") {
 624                                         $related = $attributes->textContent;
 625                                 }
 626                         }
 627                 }
 628
 629                 $georsspoint = $xpath->query('georss:point', $entry);
 630                 if (!empty($georsspoint) && ($georsspoint->length > 0)) {
 631                         $item["coord"] = $georsspoint->item(0)->nodeValue;
 632                 }
 633
 634                 $categories = $xpath->query('atom:category', $entry);
 635                 if ($categories) {
 636                         foreach ($categories as $category) {
 637                                 foreach ($category->attributes as $attributes) {
 638                                         if ($attributes->name == 'term') {
 639                                                 // Store the hashtag
 640                                                 Tag::store($item['uri-id'], Tag::HASHTAG, $attributes->textContent);
 641                                         }
 642                                 }
 643                         }
 644                 }
 645
 646                 $self = '';
 647                 $add_body = '';
 648
 649                 $links = $xpath->query('atom:link', $entry);
 650                 if ($links) {
 651                         $link_data = self::processLinks($links, $item);
 652                         $self = $link_data['self'];
 653                         $add_body = $link_data['add_body'];
 654                 }
 655
 656                 $repeat_of = "";
 657
 658                 $notice_info = $xpath->query('statusnet:notice_info', $entry);
 659                 if ($notice_info && ($notice_info->length > 0)) {
 660                         foreach ($notice_info->item(0)->attributes as $attributes) {
 661                                 if ($attributes->name == "source") {
 662                                         $item["app"] = strip_tags($attributes->textContent);
 663                                 }
 664                                 if ($attributes->name == "repeat_of") {
 665                                         $repeat_of = $attributes->textContent;
 666                                 }
 667                         }
 668                 }
 669                 // Is it a repeated post?
 670                 if (($repeat_of != "") || ($item["verb"] == Activity::SHARE)) {
 671                         $link_data = self::processRepeatedItem($xpath, $entry, $item, $importer);
 672                         if (!empty($link_data['add_body'])) {
 673                                 $add_body .= $link_data['add_body'];
 674                         }
 675                 }
 676
 677                 $item["body"] .= $add_body;
 678
 679                 Tag::storeFromBody($item['uri-id'], $item['body']);
 680
 681                 // Mastodon Content Warning
 682                 if (($item["verb"] == Activity::POST) && $xpath->evaluate('boolean(atom:summary)', $entry)) {
 683                         $clear_text = XML::getFirstNodeValue($xpath, 'atom:summary/text()', $entry);
 684                         if (!empty($clear_text)) {
 685                                 $item['content-warning'] = HTML::toBBCode($clear_text);
 686                         }
 687                 }
 688
 689                 if (($self != '') && empty($item['protocol'])) {
 690                         self::fetchSelf($self, $item);
 691                 }
 692
 693                 if (!empty($item["conversation-href"])) {
 694                         self::fetchConversation($item['conversation-href'], $item['conversation-uri']);
 695                 }
 696
 697                 if (isset($item["thr-parent"])) {
 698                         if (!Post::exists(['uid' => $importer["uid"], 'uri' => $item['thr-parent']])) {
 699                                 if ($related != '') {
 700                                         self::fetchRelated($related, $item["thr-parent"], $importer);
 701                                 }
 702                         } else {
 703                                 Logger::info('Reply with URI '.$item["uri"].' already existed for user '.$importer["uid"].'.');
 704                         }
 705                 } else {
 706                         $item["thr-parent"] = $item["uri"];
 707                         $item["gravity"] = GRAVITY_PARENT;
 708                 }
 709
 710                 if (($item['author-link'] != '') && !empty($item['protocol'])) {
 711                         $item = Conversation::insert($item);
 712                 }
 713
 714                 self::$itemlist[] = $item;
 715         }
 716
 717         /**
 718          * Fetch the conversation for posts
 719          *
 720          * @param string $conversation     The link to the conversation
 721          * @param string $conversation_uri The conversation in "uri" format
 722          * @return void
 723          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 724          */
 725         private static function fetchConversation($conversation, $conversation_uri)
 726         {
 727                 // Ensure that we only store a conversation once in a process
 728                 if (isset(self::$conv_list[$conversation])) {
 729                         return;
 730                 }
 731
 732                 self::$conv_list[$conversation] = true;
 733
 734                 $curlResult = DI::httpClient()->get($conversation, HttpClientAccept::ATOM_XML);
 735
 736                 if (!$curlResult->isSuccess() || empty($curlResult->getBody())) {
 737                         return;
 738                 }
 739
 740                 $xml = '';
 741
 742                 if ($curlResult->inHeader('Content-Type') &&
 743                         in_array('application/atom+xml', $curlResult->getHeader('Content-Type'))) {
 744                         $xml = $curlResult->getBody();
 745                 }
 746
 747                 if ($xml == '') {
 748                         $doc = new DOMDocument();
 749                         if (!@$doc->loadHTML($curlResult->getBody())) {
 750                                 return;
 751                         }
 752                         $xpath = new DOMXPath($doc);
 753
 754                         $links = $xpath->query('//link');
 755                         if ($links) {
 756                                 $file = '';
 757                                 foreach ($links as $link) {
 758                                         $attribute = self::readAttributes($link);
 759                                         if (($attribute['rel'] == 'alternate') && ($attribute['type'] == 'application/atom+xml')) {
 760                                                 $file = $attribute['href'];
 761                                         }
 762                                 }
 763                                 if ($file != '') {
 764                                         $conversation_atom = DI::httpClient()->get($attribute['href'], HttpClientAccept::ATOM_XML);
 765
 766                                         if ($conversation_atom->isSuccess()) {
 767                                                 $xml = $conversation_atom->getBody();
 768                                         }
 769                                 }
 770                         }
 771                 }
 772
 773                 if ($xml == '') {
 774                         return;
 775                 }
 776
 777                 self::storeConversation($xml, $conversation, $conversation_uri);
 778         }
 779
 780         /**
 781          * Store a feed in several conversation entries
 782          *
 783          * @param string $xml              The feed
 784          * @param string $conversation     conversation
 785          * @param string $conversation_uri conversation uri
 786          * @return void
 787          * @throws \Exception
 788          */
 789         private static function storeConversation($xml, $conversation = '', $conversation_uri = '')
 790         {
 791                 $doc = new DOMDocument();
 792                 @$doc->loadXML($xml);
 793
 794                 $xpath = new DOMXPath($doc);
 795                 $xpath->registerNamespace('atom', ActivityNamespace::ATOM1);
 796                 $xpath->registerNamespace('thr', ActivityNamespace::THREAD);
 797                 $xpath->registerNamespace('ostatus', ActivityNamespace::OSTATUS);
 798
 799                 $entries = $xpath->query('/atom:feed/atom:entry');
 800
 801                 // Now store the entries
 802                 foreach ($entries as $entry) {
 803                         $doc2 = new DOMDocument();
 804                         $doc2->preserveWhiteSpace = false;
 805                         $doc2->formatOutput = true;
 806
 807                         $conv_data = [];
 808
 809                         $conv_data['protocol'] = Conversation::PARCEL_SPLIT_CONVERSATION;
 810                         $conv_data['direction'] = Conversation::PULL;
 811                         $conv_data['network'] = Protocol::OSTATUS;
 812                         $conv_data['uri'] = XML::getFirstNodeValue($xpath, 'atom:id/text()', $entry);
 813
 814                         $inreplyto = $xpath->query('thr:in-reply-to', $entry);
 815                         if (is_object($inreplyto->item(0))) {
 816                                 foreach ($inreplyto->item(0)->attributes as $attributes) {
 817                                         if ($attributes->name == "ref") {
 818                                                 $conv_data['reply-to-uri'] = $attributes->textContent;
 819                                         }
 820                                 }
 821                         }
 822
 823                         $conv_data['conversation-uri'] = XML::getFirstNodeValue($xpath, 'ostatus:conversation/text()', $entry);
 824
 825                         $conv = $xpath->query('ostatus:conversation', $entry);
 826                         if (is_object($conv->item(0))) {
 827                                 foreach ($conv->item(0)->attributes as $attributes) {
 828                                         if ($attributes->name == "ref") {
 829                                                 $conv_data['conversation-uri'] = $attributes->textContent;
 830                                         }
 831                                         if ($attributes->name == "href") {
 832                                                 $conv_data['conversation-href'] = $attributes->textContent;
 833                                         }
 834                                 }
 835                         }
 836
 837                         if ($conversation != '') {
 838                                 $conv_data['conversation-uri'] = $conversation;
 839                         }
 840
 841                         if ($conversation_uri != '') {
 842                                 $conv_data['conversation-uri'] = $conversation_uri;
 843                         }
 844
 845                         $entry = $doc2->importNode($entry, true);
 846
 847                         $doc2->appendChild($entry);
 848
 849                         $conv_data['source'] = $doc2->saveXML();
 850
 851                         Logger::info('Store conversation data for uri '.$conv_data['uri']);
 852                         Conversation::insert($conv_data);
 853                 }
 854         }
 855
 856         /**
 857          * Fetch the own post so that it can be stored later
 858          *
 859          * We want to store the original data for later processing.
 860          * This function is meant for cases where we process a feed with multiple entries.
 861          * In that case we need to fetch the single posts here.
 862          *
 863          * @param string $self The link to the self item
 864          * @param array  $item The item array
 865          * @return void
 866          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 867          */
 868         private static function fetchSelf($self, array &$item)
 869         {
 870                 $condition = ['item-uri' => $self, 'protocol' => [Conversation::PARCEL_DFRN,
 871                         Conversation::PARCEL_DIASPORA_DFRN, Conversation::PARCEL_LOCAL_DFRN,
 872                         Conversation::PARCEL_DIRECT, Conversation::PARCEL_SALMON]];
 873                 if (DBA::exists('conversation', $condition)) {
 874                         Logger::info('Conversation '.$item['uri'].' is already stored.');
 875                         return;
 876                 }
 877
 878                 $curlResult = DI::httpClient()->get($self, HttpClientAccept::ATOM_XML);
 879
 880                 if (!$curlResult->isSuccess()) {
 881                         return;
 882                 }
 883
 884                 // We reformat the XML to make it better readable
 885                 $doc = new DOMDocument();
 886                 $doc->loadXML($curlResult->getBody());
 887                 $doc->preserveWhiteSpace = false;
 888                 $doc->formatOutput = true;
 889                 $xml = $doc->saveXML();
 890
 891                 $item["protocol"] = Conversation::PARCEL_SALMON;
 892                 $item["source"] = $xml;
 893                 $item["direction"] = Conversation::PULL;
 894
 895                 Logger::info('Conversation '.$item['uri'].' is now fetched.');
 896         }
 897
 898         /**
 899          * Fetch related posts and processes them
 900          *
 901          * @param string $related     The link to the related item
 902          * @param string $related_uri The related item in "uri" format
 903          * @param array  $importer    user record of the importing user
 904          * @return void
 905          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 906          * @throws \ImagickException
 907          */
 908         private static function fetchRelated($related, $related_uri, $importer)
 909         {
 910                 $condition = ['item-uri' => $related_uri, 'protocol' => [Conversation::PARCEL_DFRN,
 911                         Conversation::PARCEL_DIASPORA_DFRN, Conversation::PARCEL_LOCAL_DFRN,
 912                         Conversation::PARCEL_DIRECT, Conversation::PARCEL_SALMON]];
 913                 $conversation = DBA::selectFirst('conversation', ['source', 'protocol'], $condition);
 914                 if (DBA::isResult($conversation)) {
 915                         $stored = true;
 916                         $xml = $conversation['source'];
 917                         if (self::process($xml, $importer, $contact, $hub, $stored, false, Conversation::PULL)) {
 918                                 Logger::info('Got valid cached XML for URI '.$related_uri);
 919                                 return;
 920                         }
 921                         if ($conversation['protocol'] == Conversation::PARCEL_SALMON) {
 922                                 Logger::info('Delete invalid cached XML for URI '.$related_uri);
 923                                 DBA::delete('conversation', ['item-uri' => $related_uri]);
 924                         }
 925                 }
 926
 927                 $stored = false;
 928                 $curlResult = DI::httpClient()->get($related, HttpClientAccept::ATOM_XML);
 929
 930                 if (!$curlResult->isSuccess() || empty($curlResult->getBody())) {
 931                         return;
 932                 }
 933
 934                 $xml = '';
 935
 936                 if ($curlResult->inHeader('Content-Type') &&
 937                         in_array('application/atom+xml', $curlResult->getHeader('Content-Type'))) {
 938                         Logger::info('Directly fetched XML for URI ' . $related_uri);
 939                         $xml = $curlResult->getBody();
 940                 }
 941
 942                 if ($xml == '') {
 943                         $doc = new DOMDocument();
 944                         if (!@$doc->loadHTML($curlResult->getBody())) {
 945                                 return;
 946                         }
 947                         $xpath = new DOMXPath($doc);
 948
 949                         $atom_file = '';
 950
 951                         $links = $xpath->query('//link');
 952                         if ($links) {
 953                                 foreach ($links as $link) {
 954                                         $attribute = self::readAttributes($link);
 955                                         if (($attribute['rel'] == 'alternate') && ($attribute['type'] == 'application/atom+xml')) {
 956                                                 $atom_file = $attribute['href'];
 957                                         }
 958                                 }
 959                                 if ($atom_file != '') {
 960                                         $curlResult = DI::httpClient()->get($atom_file, HttpClientAccept::ATOM_XML);
 961
 962                                         if ($curlResult->isSuccess()) {
 963                                                 Logger::info('Fetched XML for URI ' . $related_uri);
 964                                                 $xml = $curlResult->getBody();
 965                                         }
 966                                 }
 967                         }
 968                 }
 969
 970                 // Workaround for older GNU Social servers
 971                 if (($xml == '') && strstr($related, '/notice/')) {
 972                         $curlResult = DI::httpClient()->get(str_replace('/notice/', '/api/statuses/show/', $related) . '.atom', HttpClientAccept::ATOM_XML);
 973
 974                         if ($curlResult->isSuccess()) {
 975                                 Logger::info('GNU Social workaround to fetch XML for URI ' . $related_uri);
 976                                 $xml = $curlResult->getBody();
 977                         }
 978                 }
 979
 980                 // Even more worse workaround for GNU Social ;-)
 981                 if ($xml == '') {
 982                         $related_guess = self::convertHref($related_uri);
 983                         $curlResult = DI::httpClient()->get(str_replace('/notice/', '/api/statuses/show/', $related_guess) . '.atom', HttpClientAccept::ATOM_XML);
 984
 985                         if ($curlResult->isSuccess()) {
 986                                 Logger::info('GNU Social workaround 2 to fetch XML for URI ' . $related_uri);
 987                                 $xml = $curlResult->getBody();
 988                         }
 989                 }
 990
 991                 // Finally we take the data that we fetched from "ostatus:conversation"
 992                 if ($xml == '') {
 993                         $condition = ['item-uri' => $related_uri, 'protocol' => Conversation::PARCEL_SPLIT_CONVERSATION];
 994                         $conversation = DBA::selectFirst('conversation', ['source'], $condition);
 995                         if (DBA::isResult($conversation)) {
 996                                 $stored = true;
 997                                 Logger::info('Got cached XML from conversation for URI '.$related_uri);
 998                                 $xml = $conversation['source'];
 999                         }
1000                 }
1001
1002                 if ($xml != '') {
1003                         self::process($xml, $importer, $contact, $hub, $stored, false, Conversation::PULL);
1004                 } else {
1005                         Logger::info("XML couldn't be fetched for URI: ".$related_uri." - href: ".$related);
1006                 }
1007                 return;
1008         }
1009
1010         /**
1011          * Processes the XML for a repeated post
1012          *
1013          * @param DOMXPath $xpath    The xpath object
1014          * @param object   $entry    The xml entry that is processed
1015          * @param array    $item     The item array
1016          * @param array    $importer user record of the importing user
1017          *
1018          * @return array with data from links
1019          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1020          * @throws \ImagickException
1021          */
1022         private static function processRepeatedItem(DOMXPath $xpath, $entry, array &$item, array $importer)
1023         {
1024                 $activityobject = $xpath->query('activity:object', $entry)->item(0);
1025
1026                 if (!is_object($activityobject)) {
1027                         return [];
1028                 }
1029
1030                 $link_data = [];
1031
1032                 $orig_uri = XML::getFirstNodeValue($xpath, 'atom:id/text()', $activityobject);
1033
1034                 $links = $xpath->query("atom:link", $activityobject);
1035                 if ($links) {
1036                         $link_data = self::processLinks($links, $item);
1037                 }
1038
1039                 $orig_body = XML::getFirstNodeValue($xpath, 'atom:content/text()', $activityobject);
1040                 $orig_created = XML::getFirstNodeValue($xpath, 'atom:published/text()', $activityobject);
1041                 $orig_edited = XML::getFirstNodeValue($xpath, 'atom:updated/text()', $activityobject);
1042
1043                 $orig_author = self::fetchAuthor($xpath, $activityobject, $importer, $dummy, false);
1044
1045                 $item["author-name"] = $orig_author["author-name"];
1046                 $item["author-link"] = $orig_author["author-link"];
1047                 $item["author-id"] = $orig_author["author-id"];
1048
1049                 $item["body"] = HTML::toBBCode($orig_body);
1050                 $item["created"] = $orig_created;
1051                 $item["edited"] = $orig_edited;
1052
1053                 $item["uri"] = $orig_uri;
1054
1055                 $item["verb"] = XML::getFirstNodeValue($xpath, 'activity:verb/text()', $activityobject);
1056
1057                 $item["object-type"] = XML::getFirstNodeValue($xpath, 'activity:object-type/text()', $activityobject);
1058
1059                 // Mastodon Content Warning
1060                 if (($item["verb"] == Activity::POST) && $xpath->evaluate('boolean(atom:summary)', $activityobject)) {
1061                         $clear_text = XML::getFirstNodeValue($xpath, 'atom:summary/text()', $activityobject);
1062                         if (!empty($clear_text)) {
1063                                 $item['content-warning'] = HTML::toBBCode($clear_text);
1064                         }
1065                 }
1066
1067                 $inreplyto = $xpath->query('thr:in-reply-to', $activityobject);
1068                 if (is_object($inreplyto->item(0))) {
1069                         foreach ($inreplyto->item(0)->attributes as $attributes) {
1070                                 if ($attributes->name == "ref") {
1071                                         $item["thr-parent"] = $attributes->textContent;
1072                                 }
1073                         }
1074                 }
1075
1076                 return $link_data;
1077         }
1078
1079         /**
1080          * Processes links in the XML
1081          *
1082          * @param object $links The xml data that contain links
1083          * @param array  $item  The item array
1084          *
1085          * @return array with data from the links
1086          */
1087         private static function processLinks($links, array &$item)
1088         {
1089                 $link_data = ['add_body' => '', 'self' => ''];
1090
1091                 foreach ($links as $link) {
1092                         $attribute = self::readAttributes($link);
1093
1094                         if (!empty($attribute['rel']) && !empty($attribute['href'])) {
1095                                 switch ($attribute['rel']) {
1096                                         case "alternate":
1097                                                 $item["plink"] = $attribute['href'];
1098                                                 if (($item["object-type"] == Activity\ObjectType::QUESTION)
1099                                                         || ($item["object-type"] == Activity\ObjectType::EVENT)
1100                                                 ) {
1101                                                         Post\Media::insert(['uri-id' => $item['uri-id'], 'type' => Post\Media::UNKNOWN,
1102                                                                 'url' => $attribute['href'], 'mimetype' => $attribute['type'] ?? null,
1103                                                                 'size' => $attribute['length'] ?? null, 'description' => $attribute['title'] ?? null]);
1104                                                 }
1105                                                 break;
1106                                         case "ostatus:conversation":
1107                                                 $link_data['conversation'] = $attribute['href'];
1108                                                 $item['conversation-href'] = $link_data['conversation'];
1109                                                 if (!isset($item['conversation-uri'])) {
1110                                                         $item['conversation-uri'] = $item['conversation-href'];
1111                                                 }
1112                                                 break;
1113                                         case "enclosure":
1114                                                 $filetype = strtolower(substr($attribute['type'], 0, strpos($attribute['type'], '/')));
1115                                                 if ($filetype == 'image') {
1116                                                         $link_data['add_body'] .= "\n[img]".$attribute['href'].'[/img]';
1117                                                 } else {
1118                                                         Post\Media::insert(['uri-id' => $item['uri-id'], 'type' => Post\Media::DOCUMENT,
1119                                                                 'url' => $attribute['href'], 'mimetype' => $attribute['type'],
1120                                                                 'size' => $attribute['length'] ?? null, 'description' => $attribute['title'] ?? null]);
1121                                                 }
1122                                                 break;
1123                                         case "related":
1124                                                 if ($item["object-type"] != Activity\ObjectType::BOOKMARK) {
1125                                                         if (!isset($item["thr-parent"])) {
1126                                                                 $item["thr-parent"] = $attribute['href'];
1127                                                         }
1128                                                         $link_data['related'] = $attribute['href'];
1129                                                 } else {
1130                                                         Post\Media::insert(['uri-id' => $item['uri-id'], 'type' => Post\Media::UNKNOWN,
1131                                                                 'url' => $attribute['href'], 'mimetype' => $attribute['type'] ?? null,
1132                                                                 'size' => $attribute['length'] ?? null, 'description' => $attribute['title'] ?? null]);
1133                                                 }
1134                                                 break;
1135                                         case "self":
1136                                                 if (empty($item["plink"])) {
1137                                                         $item["plink"] = $attribute['href'];
1138                                                 }
1139                                                 $link_data['self'] = $attribute['href'];
1140                                                 break;
1141                                 }
1142                         }
1143                 }
1144                 return $link_data;
1145         }
1146
1147         /**
1148          * Create an url out of an uri
1149          *
1150          * @param string $href URI in the format "parameter1:parameter1:..."
1151          *
1152          * @return string URL in the format http(s)://....
1153          */
1154         private static function convertHref($href)
1155         {
1156                 $elements = explode(":", $href);
1157
1158                 if ((count($elements) <= 2) || ($elements[0] != "tag")) {
1159                         return $href;
1160                 }
1161
1162                 $server = explode(",", $elements[1]);
1163                 $conversation = explode("=", $elements[2]);
1164
1165                 if ((count($elements) == 4) && ($elements[2] == "post")) {
1166                         return "http://".$server[0]."/notice/".$elements[3];
1167                 }
1168
1169                 if ((count($conversation) != 2) || ($conversation[1] =="")) {
1170                         return $href;
1171                 }
1172                 if ($elements[3] == "objectType=thread") {
1173                         return "http://".$server[0]."/conversation/".$conversation[1];
1174                 } else {
1175                         return "http://".$server[0]."/notice/".$conversation[1];
1176                 }
1177         }
1178
1179         /**
1180          * Cleans the body of a post if it contains picture links
1181          *
1182          * @param string $body The body
1183          *
1184          * @return string The cleaned body
1185          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1186          */
1187         public static function formatPicturePost($body, $uriid)
1188         {
1189                 $siteinfo = BBCode::getAttachedData($body);
1190
1191                 if (($siteinfo["type"] == "photo") && (!empty($siteinfo["preview"]) || !empty($siteinfo["image"]))) {
1192                         if (isset($siteinfo["preview"])) {
1193                                 $preview = $siteinfo["preview"];
1194                         } else {
1195                                 $preview = $siteinfo["image"];
1196                         }
1197
1198                         // Is it a remote picture? Then make a smaller preview here
1199                         $preview = Post\Link::getByLink($uriid, $preview, Proxy::SIZE_SMALL);
1200
1201                         // Is it a local picture? Then make it smaller here
1202                         $preview = str_replace(["-0.jpg", "-0.png"], ["-2.jpg", "-2.png"], $preview);
1203                         $preview = str_replace(["-1.jpg", "-1.png"], ["-2.jpg", "-2.png"], $preview);
1204
1205                         if (isset($siteinfo["url"])) {
1206                                 $url = $siteinfo["url"];
1207                         } else {
1208                                 $url = $siteinfo["image"];
1209                         }
1210
1211                         $body = trim($siteinfo["text"])." [url]".$url."[/url]\n[img]".$preview."[/img]";
1212                 }
1213
1214                 return $body;
1215         }
1216
1217         /**
1218          * Adds the header elements to the XML document
1219          *
1220          * @param DOMDocument $doc       XML document
1221          * @param array       $owner     Contact data of the poster
1222          * @param string      $filter    The related feed filter (activity, posts or comments)
1223          *
1224          * @return object header root element
1225          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1226          */
1227         private static function addHeader(DOMDocument $doc, array $owner, $filter)
1228         {
1229                 $root = $doc->createElementNS(ActivityNamespace::ATOM1, 'feed');
1230                 $doc->appendChild($root);
1231
1232                 $root->setAttribute("xmlns:thr", ActivityNamespace::THREAD);
1233                 $root->setAttribute("xmlns:georss", ActivityNamespace::GEORSS);
1234                 $root->setAttribute("xmlns:activity", ActivityNamespace::ACTIVITY);
1235                 $root->setAttribute("xmlns:media", ActivityNamespace::MEDIA);
1236                 $root->setAttribute("xmlns:poco", ActivityNamespace::POCO);
1237                 $root->setAttribute("xmlns:ostatus", ActivityNamespace::OSTATUS);
1238                 $root->setAttribute("xmlns:statusnet", ActivityNamespace::STATUSNET);
1239                 $root->setAttribute("xmlns:mastodon", ActivityNamespace::MASTODON);
1240
1241                 $title = '';
1242                 $selfUri = '/feed/' . $owner["nick"] . '/';
1243                 switch ($filter) {
1244                         case 'activity':
1245                                 $title = DI::l10n()->t('%s\'s timeline', $owner['name']);
1246                                 $selfUri .= $filter;
1247                                 break;
1248                         case 'posts':
1249                                 $title = DI::l10n()->t('%s\'s posts', $owner['name']);
1250                                 break;
1251                         case 'comments':
1252                                 $title = DI::l10n()->t('%s\'s comments', $owner['name']);
1253                                 $selfUri .= $filter;
1254                                 break;
1255                 }
1256
1257                 $selfUri = "/dfrn_poll/" . $owner["nick"];
1258
1259                 $attributes = ["uri" => "https://friendi.ca", "version" => FRIENDICA_VERSION . "-" . DB_UPDATE_VERSION];
1260                 XML::addElement($doc, $root, "generator", FRIENDICA_PLATFORM, $attributes);
1261                 XML::addElement($doc, $root, "id", DI::baseUrl() . "/profile/" . $owner["nick"]);
1262                 XML::addElement($doc, $root, "title", $title);
1263                 XML::addElement($doc, $root, "subtitle", sprintf("Updates from %s on %s", $owner["name"], DI::config()->get('config', 'sitename')));
1264                 XML::addElement($doc, $root, "logo", User::getAvatarUrl($owner, Proxy::SIZE_SMALL));
1265                 XML::addElement($doc, $root, "updated", DateTimeFormat::utcNow(DateTimeFormat::ATOM));
1266
1267                 $author = self::addAuthor($doc, $owner, true);
1268                 $root->appendChild($author);
1269
1270                 $attributes = ["href" => $owner["url"], "rel" => "alternate", "type" => "text/html"];
1271                 XML::addElement($doc, $root, "link", "", $attributes);
1272
1273                 /// @TODO We have to find out what this is
1274                 /// $attributes = array("href" => DI::baseUrl()."/sup",
1275                 ///             "rel" => "http://api.friendfeed.com/2008/03#sup",
1276                 ///             "type" => "application/json");
1277                 /// XML::addElement($doc, $root, "link", "", $attributes);
1278
1279                 self::hublinks($doc, $root, $owner["nick"]);
1280
1281                 $attributes = ["href" => DI::baseUrl() . "/salmon/" . $owner["nick"], "rel" => "salmon"];
1282                 XML::addElement($doc, $root, "link", "", $attributes);
1283
1284                 $attributes = ["href" => DI::baseUrl() . "/salmon/" . $owner["nick"], "rel" => "http://salmon-protocol.org/ns/salmon-replies"];
1285                 XML::addElement($doc, $root, "link", "", $attributes);
1286
1287                 $attributes = ["href" => DI::baseUrl() . "/salmon/" . $owner["nick"], "rel" => "http://salmon-protocol.org/ns/salmon-mention"];
1288                 XML::addElement($doc, $root, "link", "", $attributes);
1289
1290                 $attributes = ["href" => DI::baseUrl() . $selfUri, "rel" => "self", "type" => "application/atom+xml"];
1291                 XML::addElement($doc, $root, "link", "", $attributes);
1292
1293                 if ($owner['contact-type'] == Contact::TYPE_COMMUNITY) {
1294                         $condition = ['uid' => $owner['uid'], 'self' => false, 'pending' => false,
1295                                         'archive' => false, 'hidden' => false, 'blocked' => false];
1296                         $members = DBA::count('contact', $condition);
1297                         XML::addElement($doc, $root, "statusnet:group_info", "", ["member_count" => $members]);
1298                 }
1299
1300                 return $root;
1301         }
1302
1303         /**
1304          * Add the link to the push hubs to the XML document
1305          *
1306          * @param DOMDocument $doc  XML document
1307          * @param object      $root XML root element where the hub links are added
1308          * @param object      $nick nick
1309          * @return void
1310          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1311          */
1312         public static function hublinks(DOMDocument $doc, $root, $nick)
1313         {
1314                 $h = DI::baseUrl() . '/pubsubhubbub/'.$nick;
1315                 XML::addElement($doc, $root, "link", "", ["href" => $h, "rel" => "hub"]);
1316         }
1317
1318         /**
1319          * Adds attachment data to the XML document
1320          *
1321          * @param DOMDocument $doc  XML document
1322          * @param object      $root XML root element where the hub links are added
1323          * @param array       $item Data of the item that is to be posted
1324          * @return void
1325          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1326          */
1327         public static function getAttachment(DOMDocument $doc, $root, $item)
1328         {
1329                 $siteinfo = BBCode::getAttachedData($item["body"]);
1330
1331                 switch ($siteinfo["type"]) {
1332                         case 'photo':
1333                                 if (!empty($siteinfo["image"])) {
1334                                         $imgdata = Images::getInfoFromURLCached($siteinfo["image"]);
1335                                         if ($imgdata) {
1336                                                 $attributes = ["rel" => "enclosure",
1337                                                                 "href" => $siteinfo["image"],
1338                                                                 "type" => $imgdata["mime"],
1339                                                                 "length" => intval($imgdata["size"])];
1340                                                 XML::addElement($doc, $root, "link", "", $attributes);
1341                                         }
1342                                 }
1343                                 break;
1344                         case 'video':
1345                                 $attributes = ["rel" => "enclosure",
1346                                                 "href" => $siteinfo["url"],
1347                                                 "type" => "text/html; charset=UTF-8",
1348                                                 "length" => "0",
1349                                                 "title" => ($siteinfo["title"] ?? '') ?: $siteinfo["url"],
1350                                 ];
1351                                 XML::addElement($doc, $root, "link", "", $attributes);
1352                                 break;
1353                         default:
1354                                 break;
1355                 }
1356
1357                 if (!DI::config()->get('system', 'ostatus_not_attach_preview') && ($siteinfo["type"] != "photo") && isset($siteinfo["image"])) {
1358                         $imgdata = Images::getInfoFromURLCached($siteinfo["image"]);
1359                         if ($imgdata) {
1360                                 $attributes = ["rel" => "enclosure",
1361                                                 "href" => $siteinfo["image"],
1362                                                 "type" => $imgdata["mime"],
1363                                                 "length" => intval($imgdata["size"])];
1364
1365                                 XML::addElement($doc, $root, "link", "", $attributes);
1366                         }
1367                 }
1368
1369                 foreach (Post\Media::getByURIId($item['uri-id'], [Post\Media::DOCUMENT, Post\Media::TORRENT, Post\Media::UNKNOWN]) as $attachment) {
1370                         $attributes = ['rel' => 'enclosure',
1371                                 'href' => $attachment['url'],
1372                                 'type' => $attachment['mimetype']];
1373
1374                         if (!empty($attachment['size'])) {
1375                                 $attributes['length'] = intval($attachment['size']);
1376                         }
1377                         if (!empty($attachment['description'])) {
1378                                 $attributes['title'] = $attachment['description'];
1379                         }
1380
1381                         XML::addElement($doc, $root, 'link', '', $attributes);
1382                 }
1383         }
1384
1385         /**
1386          * Adds the author element to the XML document
1387          *
1388          * @param DOMDocument $doc          XML document
1389          * @param array       $owner        Contact data of the poster
1390          * @param bool        $show_profile Whether to show profile
1391          *
1392          * @return \DOMElement author element
1393          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1394          */
1395         private static function addAuthor(DOMDocument $doc, array $owner, $show_profile = true)
1396         {
1397                 $profile = DBA::selectFirst('profile', ['homepage', 'publish'], ['uid' => $owner['uid']]);
1398                 $author = $doc->createElement("author");
1399                 XML::addElement($doc, $author, "id", $owner["url"]);
1400                 if ($owner['contact-type'] == Contact::TYPE_COMMUNITY) {
1401                         XML::addElement($doc, $author, "activity:object-type", Activity\ObjectType::GROUP);
1402                 } else {
1403                         XML::addElement($doc, $author, "activity:object-type", Activity\ObjectType::PERSON);
1404                 }
1405
1406                 XML::addElement($doc, $author, "uri", $owner["url"]);
1407                 XML::addElement($doc, $author, "name", $owner["nick"]);
1408                 XML::addElement($doc, $author, "email", $owner["addr"]);
1409                 if ($show_profile) {
1410                         XML::addElement($doc, $author, "summary", BBCode::convertForUriId($owner['uri-id'], $owner["about"], BBCode::OSTATUS));
1411                 }
1412
1413                 $attributes = ["rel" => "alternate", "type" => "text/html", "href" => $owner["url"]];
1414                 XML::addElement($doc, $author, "link", "", $attributes);
1415
1416                 $attributes = [
1417                                 "rel" => "avatar",
1418                                 "type" => "image/jpeg", // To-Do?
1419                                 "media:width" => Proxy::PIXEL_SMALL,
1420                                 "media:height" => Proxy::PIXEL_SMALL,
1421                                 "href" => User::getAvatarUrl($owner, Proxy::SIZE_SMALL)];
1422                 XML::addElement($doc, $author, "link", "", $attributes);
1423
1424                 if (isset($owner["thumb"])) {
1425                         $attributes = [
1426                                         "rel" => "avatar",
1427                                         "type" => "image/jpeg", // To-Do?
1428                                         "media:width" => Proxy::PIXEL_THUMB,
1429                                         "media:height" => Proxy::PIXEL_THUMB,
1430                                         "href" => User::getAvatarUrl($owner, Proxy::SIZE_THUMB)];
1431                         XML::addElement($doc, $author, "link", "", $attributes);
1432                 }
1433
1434                 XML::addElement($doc, $author, "poco:preferredUsername", $owner["nick"]);
1435                 XML::addElement($doc, $author, "poco:displayName", $owner["name"]);
1436                 if ($show_profile) {
1437                         XML::addElement($doc, $author, "poco:note", BBCode::convertForUriId($owner['uri-id'], $owner["about"], BBCode::OSTATUS));
1438
1439                         if (trim($owner["location"]) != "") {
1440                                 $element = $doc->createElement("poco:address");
1441                                 XML::addElement($doc, $element, "poco:formatted", $owner["location"]);
1442                                 $author->appendChild($element);
1443                         }
1444                 }
1445
1446                 if (DBA::isResult($profile) && !$show_profile) {
1447                         if (trim($profile["homepage"]) != "") {
1448                                 $urls = $doc->createElement("poco:urls");
1449                                 XML::addElement($doc, $urls, "poco:type", "homepage");
1450                                 XML::addElement($doc, $urls, "poco:value", $profile["homepage"]);
1451                                 XML::addElement($doc, $urls, "poco:primary", "true");
1452                                 $author->appendChild($urls);
1453                         }
1454
1455                         XML::addElement($doc, $author, "followers", "", ["url" => DI::baseUrl() . "/profile/" . $owner["nick"] . "/contacts/followers"]);
1456                         XML::addElement($doc, $author, "statusnet:profile_info", "", ["local_id" => $owner["uid"]]);
1457
1458                         if ($profile["publish"]) {
1459                                 XML::addElement($doc, $author, "mastodon:scope", "public");
1460                         }
1461                 }
1462
1463                 return $author;
1464         }
1465
1466         /**
1467          * @TODO Picture attachments should look like this:
1468          *      <a href="https://status.pirati.ca/attachment/572819" title="https://status.pirati.ca/file/heluecht-20151202T222602-rd3u49p.gif"
1469          *      class="attachment thumbnail" id="attachment-572819" rel="nofollow external">https://status.pirati.ca/attachment/572819</a>
1470          */
1471
1472         /**
1473          * Returns the given activity if present - otherwise returns the "post" activity
1474          *
1475          * @param array $item Data of the item that is to be posted
1476          *
1477          * @return string activity
1478          */
1479         public static function constructVerb(array $item)
1480         {
1481                 if (!empty($item['verb'])) {
1482                         return $item['verb'];
1483                 }
1484
1485                 return Activity::POST;
1486         }
1487
1488         /**
1489          * Returns the given object type if present - otherwise returns the "note" object type
1490          *
1491          * @param array $item Data of the item that is to be posted
1492          *
1493          * @return string Object type
1494          */
1495         private static function constructObjecttype(array $item)
1496         {
1497                 if (!empty($item['object-type']) && in_array($item['object-type'], [Activity\ObjectType::NOTE, Activity\ObjectType::COMMENT])) {
1498                         return $item['object-type'];
1499                 }
1500
1501                 return Activity\ObjectType::NOTE;
1502         }
1503
1504         /**
1505          * Adds an entry element to the XML document
1506          *
1507          * @param DOMDocument $doc       XML document
1508          * @param array       $item      Data of the item that is to be posted
1509          * @param array       $owner     Contact data of the poster
1510          * @param bool        $toplevel  optional default false
1511          *
1512          * @return \DOMElement Entry element
1513          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1514          * @throws \ImagickException
1515          */
1516         private static function entry(DOMDocument $doc, array $item, array $owner, $toplevel = false)
1517         {
1518                 if ($item["verb"] == Activity::LIKE) {
1519                         return self::likeEntry($doc, $item, $owner, $toplevel);
1520                 } elseif (in_array($item["verb"], [Activity::FOLLOW, Activity::O_UNFOLLOW])) {
1521                         return self::followEntry($doc, $item, $owner, $toplevel);
1522                 } else {
1523                         return self::noteEntry($doc, $item, $owner, $toplevel);
1524                 }
1525         }
1526
1527         /**
1528          * Adds an entry element with a "like"
1529          *
1530          * @param DOMDocument $doc      XML document
1531          * @param array       $item     Data of the item that is to be posted
1532          * @param array       $owner    Contact data of the poster
1533          * @param bool        $toplevel Is it for en entry element (false) or a feed entry (true)?
1534          *
1535          * @return \DOMElement Entry element with "like"
1536          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1537          * @throws \ImagickException
1538          */
1539         private static function likeEntry(DOMDocument $doc, array $item, array $owner, $toplevel)
1540         {
1541                 if (($item['gravity'] != GRAVITY_PARENT) && (Strings::normaliseLink($item["author-link"]) != Strings::normaliseLink($owner["url"]))) {
1542                         Logger::info("OStatus entry is from author ".$owner["url"]." - not from ".$item["author-link"].". Quitting.");
1543                 }
1544
1545                 $entry = self::entryHeader($doc, $owner, $item, $toplevel);
1546
1547                 $verb = ActivityNamespace::ACTIVITY_SCHEMA . "favorite";
1548                 self::entryContent($doc, $entry, $item, $owner, "Favorite", $verb, false);
1549
1550                 $parent = Post::selectFirst([], ['uri' => $item["thr-parent"], 'uid' => $item["uid"]]);
1551                 if (DBA::isResult($parent)) {
1552                         $as_object = $doc->createElement("activity:object");
1553
1554                         XML::addElement($doc, $as_object, "activity:object-type", self::constructObjecttype($parent));
1555
1556                         self::entryContent($doc, $as_object, $parent, $owner, "New entry");
1557
1558                         $entry->appendChild($as_object);
1559                 }
1560
1561                 self::entryFooter($doc, $entry, $item, $owner);
1562
1563                 return $entry;
1564         }
1565
1566         /**
1567          * Adds the person object element to the XML document
1568          *
1569          * @param DOMDocument $doc     XML document
1570          * @param array       $owner   Contact data of the poster
1571          * @param array       $contact Contact data of the target
1572          *
1573          * @return object author element
1574          */
1575         private static function addPersonObject(DOMDocument $doc, array $owner, array $contact)
1576         {
1577                 $object = $doc->createElement("activity:object");
1578                 XML::addElement($doc, $object, "activity:object-type", Activity\ObjectType::PERSON);
1579
1580                 if ($contact['network'] == Protocol::PHANTOM) {
1581                         XML::addElement($doc, $object, "id", $contact['url']);
1582                         return $object;
1583                 }
1584
1585                 XML::addElement($doc, $object, "id", $contact["alias"]);
1586                 XML::addElement($doc, $object, "title", $contact["nick"]);
1587
1588                 $attributes = ["rel" => "alternate", "type" => "text/html", "href" => $contact["url"]];
1589                 XML::addElement($doc, $object, "link", "", $attributes);
1590
1591                 $attributes = [
1592                                 "rel" => "avatar",
1593                                 "type" => "image/jpeg", // To-Do?
1594                                 "media:width" => 300,
1595                                 "media:height" => 300,
1596                                 "href" => $contact["photo"]];
1597                 XML::addElement($doc, $object, "link", "", $attributes);
1598
1599                 XML::addElement($doc, $object, "poco:preferredUsername", $contact["nick"]);
1600                 XML::addElement($doc, $object, "poco:displayName", $contact["name"]);
1601
1602                 if (trim($contact["location"]) != "") {
1603                         $element = $doc->createElement("poco:address");
1604                         XML::addElement($doc, $element, "poco:formatted", $contact["location"]);
1605                         $object->appendChild($element);
1606                 }
1607
1608                 return $object;
1609         }
1610
1611         /**
1612          * Adds a follow/unfollow entry element
1613          *
1614          * @param DOMDocument $doc      XML document
1615          * @param array       $item     Data of the follow/unfollow message
1616          * @param array       $owner    Contact data of the poster
1617          * @param bool        $toplevel Is it for en entry element (false) or a feed entry (true)?
1618          *
1619          * @return \DOMElement Entry element
1620          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1621          * @throws \ImagickException
1622          */
1623         private static function followEntry(DOMDocument $doc, array $item, array $owner, $toplevel)
1624         {
1625                 $item["id"] = $item['parent'] = 0;
1626                 $item["created"] = $item["edited"] = date("c");
1627                 $item["private"] = Item::PRIVATE;
1628
1629                 $contact = Contact::getByURL($item['follow']);
1630                 $item['follow'] = $contact['url'];
1631
1632                 if ($contact['alias']) {
1633                         $item['follow'] = $contact['alias'];
1634                 } else {
1635                         $contact['alias'] = $contact['url'];
1636                 }
1637
1638                 $condition = ['uid' => $owner['uid'], 'nurl' => Strings::normaliseLink($contact["url"])];
1639                 $user_contact = DBA::selectFirst('contact', ['id'], $condition);
1640
1641                 if (DBA::isResult($user_contact)) {
1642                         $connect_id = $user_contact['id'];
1643                 } else {
1644                         $connect_id = 0;
1645                 }
1646
1647                 if ($item['verb'] == Activity::FOLLOW) {
1648                         $message = DI::l10n()->t('%s is now following %s.');
1649                         $title = DI::l10n()->t('following');
1650                         $action = "subscription";
1651                 } else {
1652                         $message = DI::l10n()->t('%s stopped following %s.');
1653                         $title = DI::l10n()->t('stopped following');
1654                         $action = "unfollow";
1655                 }
1656
1657                 $item["uri"] = $item['parent-uri'] = $item['thr-parent']
1658                                 = 'tag:' . DI::baseUrl()->getHostname().
1659                                 ','.date('Y-m-d').':'.$action.':'.$owner['uid'].
1660                                 ':person:'.$connect_id.':'.$item['created'];
1661
1662                 $item["body"] = sprintf($message, $owner["nick"], $contact["nick"]);
1663
1664                 $entry = self::entryHeader($doc, $owner, $item, $toplevel);
1665
1666                 self::entryContent($doc, $entry, $item, $owner, $title);
1667
1668                 $object = self::addPersonObject($doc, $owner, $contact);
1669                 $entry->appendChild($object);
1670
1671                 self::entryFooter($doc, $entry, $item, $owner);
1672
1673                 return $entry;
1674         }
1675
1676         /**
1677          * Adds a regular entry element
1678          *
1679          * @param DOMDocument $doc       XML document
1680          * @param array       $item      Data of the item that is to be posted
1681          * @param array       $owner     Contact data of the poster
1682          * @param bool        $toplevel  Is it for en entry element (false) or a feed entry (true)?
1683          *
1684          * @return \DOMElement Entry element
1685          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1686          * @throws \ImagickException
1687          */
1688         private static function noteEntry(DOMDocument $doc, array $item, array $owner, $toplevel)
1689         {
1690                 if (($item['gravity'] != GRAVITY_PARENT) && (Strings::normaliseLink($item["author-link"]) != Strings::normaliseLink($owner["url"]))) {
1691                         Logger::info("OStatus entry is from author ".$owner["url"]." - not from ".$item["author-link"].". Quitting.");
1692                 }
1693
1694                 if (!$toplevel) {
1695                         if (!empty($item['title'])) {
1696                                 $title = BBCode::convertForUriId($item['uri-id'], $item['title'], BBCode::OSTATUS);
1697                         } else {
1698                                 $title = sprintf("New note by %s", $owner["nick"]);
1699                         }
1700                 } else {
1701                         $title = sprintf("New comment by %s", $owner["nick"]);
1702                 }
1703
1704                 $entry = self::entryHeader($doc, $owner, $item, $toplevel);
1705
1706                 XML::addElement($doc, $entry, "activity:object-type", Activity\ObjectType::NOTE);
1707
1708                 self::entryContent($doc, $entry, $item, $owner, $title, '', true);
1709
1710                 self::entryFooter($doc, $entry, $item, $owner, true);
1711
1712                 return $entry;
1713         }
1714
1715         /**
1716          * Adds a header element to the XML document
1717          *
1718          * @param DOMDocument $doc      XML document
1719          * @param array       $owner    Contact data of the poster
1720          * @param array       $item
1721          * @param bool        $toplevel Is it for en entry element (false) or a feed entry (true)?
1722          *
1723          * @return \DOMElement The entry element where the elements are added
1724          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1725          * @throws \ImagickException
1726          */
1727         public static function entryHeader(DOMDocument $doc, array $owner, array $item, $toplevel)
1728         {
1729                 if (!$toplevel) {
1730                         $entry = $doc->createElement("entry");
1731
1732                         if ($owner['contact-type'] == Contact::TYPE_COMMUNITY) {
1733                                 $contact = Contact::getByURL($item['author-link']) ?: $owner;
1734                                 $contact['nickname'] = $contact['nickname'] ?? $contact['nick'];
1735                                 $author = self::addAuthor($doc, $contact, false);
1736                                 $entry->appendChild($author);
1737                         }
1738                 } else {
1739                         $entry = $doc->createElementNS(ActivityNamespace::ATOM1, "entry");
1740
1741                         $entry->setAttribute("xmlns:thr", ActivityNamespace::THREAD);
1742                         $entry->setAttribute("xmlns:georss", ActivityNamespace::GEORSS);
1743                         $entry->setAttribute("xmlns:activity", ActivityNamespace::ACTIVITY);
1744                         $entry->setAttribute("xmlns:media", ActivityNamespace::MEDIA);
1745                         $entry->setAttribute("xmlns:poco", ActivityNamespace::POCO);
1746                         $entry->setAttribute("xmlns:ostatus", ActivityNamespace::OSTATUS);
1747                         $entry->setAttribute("xmlns:statusnet", ActivityNamespace::STATUSNET);
1748                         $entry->setAttribute("xmlns:mastodon", ActivityNamespace::MASTODON);
1749
1750                         $author = self::addAuthor($doc, $owner);
1751                         $entry->appendChild($author);
1752                 }
1753
1754                 return $entry;
1755         }
1756
1757         /**
1758          * Adds elements to the XML document
1759          *
1760          * @param DOMDocument $doc       XML document
1761          * @param \DOMElement $entry     Entry element where the content is added
1762          * @param array       $item      Data of the item that is to be posted
1763          * @param array       $owner     Contact data of the poster
1764          * @param string      $title     Title for the post
1765          * @param string      $verb      The activity verb
1766          * @param bool        $complete  Add the "status_net" element?
1767          * @return void
1768          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1769          */
1770         private static function entryContent(DOMDocument $doc, \DOMElement $entry, array $item, array $owner, $title, $verb = "", $complete = true)
1771         {
1772                 if ($verb == "") {
1773                         $verb = self::constructVerb($item);
1774                 }
1775
1776                 XML::addElement($doc, $entry, "id", $item["uri"]);
1777                 XML::addElement($doc, $entry, "title", html_entity_decode($title, ENT_QUOTES, 'UTF-8'));
1778
1779                 $body = Post\Media::addAttachmentsToBody($item['uri-id'], $item['body']);
1780                 $body = self::formatPicturePost($body, $item['uri-id']);
1781
1782                 if (!empty($item['title'])) {
1783                         $body = "[b]".$item['title']."[/b]\n\n".$body;
1784                 }
1785
1786                 $body = BBCode::convertForUriId($item['uri-id'], $body, BBCode::OSTATUS);
1787
1788                 XML::addElement($doc, $entry, "content", $body, ["type" => "html"]);
1789
1790                 XML::addElement($doc, $entry, "link", "", ["rel" => "alternate", "type" => "text/html",
1791                                                                 "href" => DI::baseUrl()."/display/".$item["guid"]]
1792                 );
1793
1794                 if ($complete && ($item["id"] > 0)) {
1795                         XML::addElement($doc, $entry, "status_net", "", ["notice_id" => $item["id"]]);
1796                 }
1797
1798                 XML::addElement($doc, $entry, "activity:verb", $verb);
1799
1800                 XML::addElement($doc, $entry, "published", DateTimeFormat::utc($item["created"]."+00:00", DateTimeFormat::ATOM));
1801                 XML::addElement($doc, $entry, "updated", DateTimeFormat::utc($item["edited"]."+00:00", DateTimeFormat::ATOM));
1802         }
1803
1804         /**
1805          * Adds the elements at the foot of an entry to the XML document
1806          *
1807          * @param DOMDocument $doc       XML document
1808          * @param object      $entry     The entry element where the elements are added
1809          * @param array       $item      Data of the item that is to be posted
1810          * @param array       $owner     Contact data of the poster
1811          * @param bool        $complete  default true
1812          * @return void
1813          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1814          */
1815         private static function entryFooter(DOMDocument $doc, $entry, array $item, array $owner, $complete = true)
1816         {
1817                 $mentioned = [];
1818
1819                 if ($item['gravity'] != GRAVITY_PARENT) {
1820                         $parent = Post::selectFirst(['guid', 'author-link', 'owner-link'], ['id' => $item['parent']]);
1821
1822                         $thrparent = Post::selectFirst(['guid', 'author-link', 'owner-link', 'plink'], ['uid' => $owner['uid'], 'uri' => $item['thr-parent']]);
1823
1824                         if (DBA::isResult($thrparent)) {
1825                                 $mentioned[$thrparent['author-link']] = $thrparent['author-link'];
1826                                 $mentioned[$thrparent['owner-link']]  = $thrparent['owner-link'];
1827                                 $parent_plink                         = $thrparent['plink'];
1828                         } elseif (DBA::isResult($parent)) {
1829                                 $mentioned[$parent['author-link']] = $parent['author-link'];
1830                                 $mentioned[$parent['owner-link']]  = $parent['owner-link'];
1831                                 $parent_plink                      = DI::baseUrl() . '/display/' . $parent['guid'];
1832                         } else {
1833                                 DI::logger()->notice('Missing parent and thr-parent for child item', ['item' => $item]);
1834                         }
1835
1836                         if (isset($parent_plink)) {
1837                                 $attributes = [
1838                                         'ref'  => $item['thr-parent'],
1839                                         'href' => $parent_plink];
1840                                 XML::addElement($doc, $entry, 'thr:in-reply-to', '', $attributes);
1841
1842                                 $attributes = [
1843                                         'rel'  => 'related',
1844                                         'href' => $parent_plink];
1845                                 XML::addElement($doc, $entry, 'link', '', $attributes);
1846                         }
1847                 }
1848
1849                 if (intval($item['parent']) > 0) {
1850                         $conversation_href = $conversation_uri = str_replace('/objects/', '/context/', $item['thr-parent']);
1851
1852                         if (isset($parent_item)) {
1853                                 $conversation = DBA::selectFirst('conversation', ['conversation-uri', 'conversation-href'], ['item-uri' => $parent_item]);
1854                                 if (DBA::isResult($conversation)) {
1855                                         if ($conversation['conversation-uri'] != '') {
1856                                                 $conversation_uri = $conversation['conversation-uri'];
1857                                         }
1858                                         if ($conversation['conversation-href'] != '') {
1859                                                 $conversation_href = $conversation['conversation-href'];
1860                                         }
1861                                 }
1862                         }
1863
1864                         XML::addElement($doc, $entry, "link", "", ["rel" => "ostatus:conversation", "href" => $conversation_href]);
1865
1866                         $attributes = [
1867                                         "href" => $conversation_href,
1868                                         "local_id" => $item['parent'],
1869                                         "ref" => $conversation_uri];
1870
1871                         XML::addElement($doc, $entry, "ostatus:conversation", $conversation_uri, $attributes);
1872                 }
1873
1874                 // uri-id isn't present for follow entry pseudo-items
1875                 $tags = Tag::getByURIId($item['uri-id'] ?? 0);
1876                 foreach ($tags as $tag) {
1877                         $mentioned[$tag['url']] = $tag['url'];
1878                 }
1879
1880                 // Make sure that mentions are accepted (GNU Social has problems with mixing HTTP and HTTPS)
1881                 $newmentions = [];
1882                 foreach ($mentioned as $mention) {
1883                         $newmentions[str_replace("http://", "https://", $mention)] = str_replace("http://", "https://", $mention);
1884                         $newmentions[str_replace("https://", "http://", $mention)] = str_replace("https://", "http://", $mention);
1885                 }
1886                 $mentioned = $newmentions;
1887
1888                 foreach ($mentioned as $mention) {
1889                         $contact = Contact::getByURL($mention, false, ['contact-type']);
1890                         if (!empty($contact) && ($contact['contact-type'] == Contact::TYPE_COMMUNITY)) {
1891                                 XML::addElement($doc, $entry, "link", "",
1892                                         [
1893                                                 "rel" => "mentioned",
1894                                                 "ostatus:object-type" => Activity\ObjectType::GROUP,
1895                                                 "href" => $mention]
1896                                 );
1897                         } else {
1898                                 XML::addElement($doc, $entry, "link", "",
1899                                         [
1900                                                 "rel" => "mentioned",
1901                                                 "ostatus:object-type" => Activity\ObjectType::PERSON,
1902                                                 "href" => $mention]
1903                                 );
1904                         }
1905                 }
1906
1907                 if ($owner['contact-type'] == Contact::TYPE_COMMUNITY) {
1908                         XML::addElement($doc, $entry, "link", "", [
1909                                 "rel" => "mentioned",
1910                                 "ostatus:object-type" => "http://activitystrea.ms/schema/1.0/group",
1911                                 "href" => $owner['url']
1912                         ]);
1913                 }
1914
1915                 if ($item['private'] != Item::PRIVATE) {
1916                         XML::addElement($doc, $entry, "link", "", ["rel" => "ostatus:attention",
1917                                                                         "href" => "http://activityschema.org/collection/public"]);
1918                         XML::addElement($doc, $entry, "link", "", ["rel" => "mentioned",
1919                                                                         "ostatus:object-type" => "http://activitystrea.ms/schema/1.0/collection",
1920                                                                         "href" => "http://activityschema.org/collection/public"]);
1921                         XML::addElement($doc, $entry, "mastodon:scope", "public");
1922                 }
1923
1924                 foreach ($tags as $tag) {
1925                         if ($tag['type'] == Tag::HASHTAG) {
1926                                 XML::addElement($doc, $entry, "category", "", ["term" => $tag['name']]);
1927                         }
1928                 }
1929
1930                 self::getAttachment($doc, $entry, $item);
1931
1932                 if ($complete && ($item["id"] > 0)) {
1933                         $app = $item["app"];
1934                         if ($app == "") {
1935                                 $app = "web";
1936                         }
1937
1938                         $attributes = ["local_id" => $item["id"], "source" => $app];
1939
1940                         if (isset($parent["id"])) {
1941                                 $attributes["repeat_of"] = $parent["id"];
1942                         }
1943
1944                         if ($item["coord"] != "") {
1945                                 XML::addElement($doc, $entry, "georss:point", $item["coord"]);
1946                         }
1947
1948                         XML::addElement($doc, $entry, "statusnet:notice_info", "", $attributes);
1949                 }
1950         }
1951
1952         /**
1953          * Creates the XML feed for a given nickname
1954          *
1955          * Supported filters:
1956          * - activity (default): all the public posts
1957          * - posts: all the public top-level posts
1958          * - comments: all the public replies
1959          *
1960          * Updates the provided last_update parameter if the result comes from the
1961          * cache or it is empty
1962          *
1963          * @param string  $owner_nick  Nickname of the feed owner
1964          * @param string  $last_update Date of the last update
1965          * @param integer $max_items   Number of maximum items to fetch
1966          * @param string  $filter      Feed items filter (activity, posts or comments)
1967          * @param boolean $nocache     Wether to bypass caching
1968          *
1969          * @return string XML feed
1970          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1971          * @throws \ImagickException
1972          */
1973         public static function feed($owner_nick, &$last_update, $max_items = 300, $filter = 'activity', $nocache = false)
1974         {
1975                 $stamp = microtime(true);
1976
1977                 $owner = User::getOwnerDataByNick($owner_nick);
1978                 if (!$owner) {
1979                         return;
1980                 }
1981
1982                 $cachekey = "ostatus:feed:" . $owner_nick . ":" . $filter . ":" . $last_update;
1983
1984                 $previous_created = $last_update;
1985
1986                 // Don't cache when the last item was posted less then 15 minutes ago (Cache duration)
1987                 if ((time() - strtotime($owner['last-item'])) < 15*60) {
1988                         $result = DI::cache()->get($cachekey);
1989                         if (!$nocache && !is_null($result)) {
1990                                 Logger::info('Feed duration: ' . number_format(microtime(true) - $stamp, 3) . ' - ' . $owner_nick . ' - ' . $filter . ' - ' . $previous_created . ' (cached)');
1991                                 $last_update = $result['last_update'];
1992                                 return $result['feed'];
1993                         }
1994                 }
1995
1996                 if (!strlen($last_update)) {
1997                         $last_update = 'now -30 days';
1998                 }
1999
2000                 $check_date = DateTimeFormat::utc($last_update);
2001                 $authorid = Contact::getIdForURL($owner["url"]);
2002
2003                 $condition = ["`uid` = ? AND `received` > ? AND NOT `deleted`
2004                         AND `private` != ? AND `visible` AND `wall` AND `parent-network` IN (?, ?)",
2005                         $owner["uid"], $check_date, Item::PRIVATE, Protocol::OSTATUS, Protocol::DFRN];
2006
2007                 if ($filter === 'comments') {
2008                         $condition[0] .= " AND `object-type` = ? ";
2009                         $condition[] = Activity\ObjectType::COMMENT;
2010                 }
2011
2012                 if ($owner['contact-type'] != Contact::TYPE_COMMUNITY) {
2013                         $condition[0] .= " AND `contact-id` = ? AND `author-id` = ?";
2014                         $condition[] = $owner["id"];
2015                         $condition[] = $authorid;
2016                 }
2017
2018                 $params = ['order' => ['received' => true], 'limit' => $max_items];
2019
2020                 if ($filter === 'posts') {
2021                         $ret = Post::selectThread([], $condition, $params);
2022                 } else {
2023                         $ret = Post::select([], $condition, $params);
2024                 }
2025
2026                 $items = Post::toArray($ret);
2027
2028                 $doc = new DOMDocument('1.0', 'utf-8');
2029                 $doc->formatOutput = true;
2030
2031                 $root = self::addHeader($doc, $owner, $filter);
2032
2033                 foreach ($items as $item) {
2034                         if (DI::config()->get('system', 'ostatus_debug')) {
2035                                 $item['body'] .= '🍼';
2036                         }
2037
2038                         if (in_array($item["verb"], [Activity::FOLLOW, Activity::O_UNFOLLOW, Activity::LIKE])) {
2039                                 continue;
2040                         }
2041
2042                         $entry = self::entry($doc, $item, $owner, false);
2043                         $root->appendChild($entry);
2044
2045                         if ($last_update < $item['created']) {
2046                                 $last_update = $item['created'];
2047                         }
2048                 }
2049
2050                 $feeddata = trim($doc->saveXML());
2051
2052                 $msg = ['feed' => $feeddata, 'last_update' => $last_update];
2053                 DI::cache()->set($cachekey, $msg, Duration::QUARTER_HOUR);
2054
2055                 Logger::info('Feed duration: ' . number_format(microtime(true) - $stamp, 3) . ' - ' . $owner_nick . ' - ' . $filter . ' - ' . $previous_created);
2056
2057                 return $feeddata;
2058         }
2059
2060         /**
2061          * Creates the XML for a salmon message
2062          *
2063          * @param array $item  Data of the item that is to be posted
2064          * @param array $owner Contact data of the poster
2065          *
2066          * @return string XML for the salmon
2067          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2068          * @throws \ImagickException
2069          */
2070         public static function salmon(array $item, array $owner)
2071         {
2072                 $doc = new DOMDocument('1.0', 'utf-8');
2073                 $doc->formatOutput = true;
2074
2075                 if (DI::config()->get('system', 'ostatus_debug')) {
2076                         $item['body'] .= '🐟';
2077                 }
2078
2079                 $entry = self::entry($doc, $item, $owner, true);
2080
2081                 $doc->appendChild($entry);
2082
2083                 return trim($doc->saveXML());
2084         }
2085
2086         /**
2087          * Checks if the given contact url does support OStatus
2088          *
2089          * @param string  $url    profile url
2090          * @return boolean
2091          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
2092          * @throws \ImagickException
2093          */
2094         public static function isSupportedByContactUrl($url)
2095         {
2096                 $probe = Probe::uri($url, Protocol::OSTATUS);
2097                 return $probe['network'] == Protocol::OSTATUS;
2098         }
2099 }