src/Protocol/Feed.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2020, Friendica
   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\PageInfo;
  27 use Friendica\Content\Text\BBCode;
  28 use Friendica\Content\Text\HTML;
  29 use Friendica\Core\Cache\Duration;
  30 use Friendica\Core\Logger;
  31 use Friendica\Core\Protocol;
  32 use Friendica\Database\DBA;
  33 use Friendica\DI;
  34 use Friendica\Model\Contact;
  35 use Friendica\Model\Conversation;
  36 use Friendica\Model\Item;
  37 use Friendica\Model\Post;
  38 use Friendica\Model\Tag;
  39 use Friendica\Model\User;
  40 use Friendica\Util\DateTimeFormat;
  41 use Friendica\Util\Network;
  42 use Friendica\Util\ParseUrl;
  43 use Friendica\Util\Strings;
  44 use Friendica\Util\XML;
  45
  46 /**
  47  * This class contain functions to import feeds (RSS/RDF/Atom)
  48  */
  49 class Feed
  50 {
  51         /**
  52          * consume - process atom feed and update anything/everything we might need to update
  53          *
  54          * $xml = the (atom) feed to consume - RSS isn't as fully supported but may work for simple feeds.
  55          *
  56          * $importer = the contact_record (joined to user_record) of the local user who owns this relationship.
  57          *             It is this person's stuff that is going to be updated.
  58          * $contact =  the person who is sending us stuff. If not set, we MAY be processing a "follow" activity
  59          *             from an external network and MAY create an appropriate contact record. Otherwise, we MUST
  60          *             have a contact record.
  61          * $hub = should we find a hub declation in the feed, pass it back to our calling process, who might (or
  62          *        might not) try and subscribe to it.
  63          * $datedir sorts in reverse order
  64          * $pass - by default ($pass = 0) we cannot guarantee that a parent item has been
  65          *      imported prior to its children being seen in the stream unless we are certain
  66          *      of how the feed is arranged/ordered.
  67          * With $pass = 1, we only pull parent items out of the stream.
  68          * With $pass = 2, we only pull children (comments/likes).
  69          *
  70          * So running this twice, first with pass 1 and then with pass 2 will do the right
  71          * thing regardless of feed ordering. This won't be adequate in a fully-threaded
  72          * model where comments can have sub-threads. That would require some massive sorting
  73          * to get all the feed items into a mostly linear ordering, and might still require
  74          * recursion.
  75          *
  76          * @param       $xml
  77          * @param array $importer
  78          * @param array $contact
  79          * @param       $hub
  80          * @throws ImagickException
  81          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
  82          */
  83         public static function consume($xml, array $importer, array $contact, &$hub)
  84         {
  85                 if ($contact['network'] === Protocol::OSTATUS) {
  86                         Logger::info('Consume OStatus messages');
  87                         OStatus::import($xml, $importer, $contact, $hub);
  88
  89                         return;
  90                 }
  91
  92                 if ($contact['network'] === Protocol::FEED) {
  93                         Logger::info('Consume feeds');
  94                         self::import($xml, $importer, $contact);
  95
  96                         return;
  97                 }
  98
  99                 if ($contact['network'] === Protocol::DFRN) {
 100                         Logger::info('Consume DFRN messages');
 101                         $dfrn_importer = DFRN::getImporter($contact['id'], $importer['uid']);
 102                         if (!empty($dfrn_importer)) {
 103                                 Logger::info('Now import the DFRN feed');
 104                                 DFRN::import($xml, $dfrn_importer, true, Conversation::PARCEL_LEGACY_DFRN);
 105                                 return;
 106                         }
 107                 }
 108         }
 109
 110         /**
 111          * Get the poll interval for the given contact array
 112          *
 113          * @param array $contact
 114          * @return int Poll interval in minutes
 115          */
 116         public static function getPollInterval(array $contact)
 117         {
 118                 if (in_array($contact['network'], [Protocol::MAIL, Protocol::FEED])) {
 119                         $ratings = [0, 3, 7, 8, 9, 10];
 120                         if (DI::config()->get('system', 'adjust_poll_frequency') && ($contact['network'] == Protocol::FEED)) {
 121                                 $rating = $contact['rating'];
 122                         } elseif (array_key_exists($contact['priority'], $ratings)) {
 123                                 $rating = $ratings[$contact['priority']];
 124                         } else {
 125                                 $rating = -1;
 126                         }
 127                 } else {
 128                         // Check once a week per default for all other networks
 129                         $rating = 9;
 130                 }
 131
 132                 // Friendica and OStatus are checked once a day
 133                 if (in_array($contact['network'], [Protocol::DFRN, Protocol::OSTATUS])) {
 134                         $rating = 8;
 135                 }
 136
 137                 // Check archived contacts or contacts with unsupported protocols once a month
 138                 if ($contact['archive'] || in_array($contact['network'], [Protocol::ZOT, Protocol::PHANTOM])) {
 139                         $rating = 10;
 140                 }
 141
 142                 if ($rating < 0) {
 143                         return 0;
 144                 }
 145                 /*
 146                  * Based on $contact['priority'], should we poll this site now? Or later?
 147                  */
 148
 149                 $min_poll_interval = max(1, DI::config()->get('system', 'min_poll_interval'));
 150
 151                 $poll_intervals = [$min_poll_interval, 15, 30, 60, 120, 180, 360, 720 ,1440, 10080, 43200];
 152
 153                 //$poll_intervals = [$min_poll_interval . ' minute', '15 minute', '30 minute',
 154                 //      '1 hour', '2 hour', '3 hour', '6 hour', '12 hour' ,'1 day', '1 week', '1 month'];
 155
 156                 return $poll_intervals[$rating];
 157         }
 158
 159         /**
 160          * Read a RSS/RDF/Atom feed and create an item entry for it
 161          *
 162          * @param string $xml      The feed data
 163          * @param array  $importer The user record of the importer
 164          * @param array  $contact  The contact record of the feed
 165          *
 166          * @return array Returns the header and the first item in dry run mode
 167          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 168          */
 169         public static function import($xml, array $importer = [], array $contact = [])
 170         {
 171                 $dryRun = empty($importer) && empty($contact);
 172
 173                 if ($dryRun) {
 174                         Logger::info("Test Atom/RSS feed");
 175                 } else {
 176                         Logger::info("Import Atom/RSS feed '" . $contact["name"] . "' (Contact " . $contact["id"] . ") for user " . $importer["uid"]);
 177                 }
 178
 179                 if (empty($xml)) {
 180                         Logger::info('XML is empty.');
 181                         return [];
 182                 }
 183
 184                 if (!empty($contact['poll'])) {
 185                         $basepath = $contact['poll'];
 186                 } elseif (!empty($contact['url'])) {
 187                         $basepath = $contact['url'];
 188                 } else {
 189                         $basepath = '';
 190                 }
 191
 192                 $doc = new DOMDocument();
 193                 @$doc->loadXML(trim($xml));
 194                 $xpath = new DOMXPath($doc);
 195                 $xpath->registerNamespace('atom', ActivityNamespace::ATOM1);
 196                 $xpath->registerNamespace('dc', "http://purl.org/dc/elements/1.1/");
 197                 $xpath->registerNamespace('content', "http://purl.org/rss/1.0/modules/content/");
 198                 $xpath->registerNamespace('rdf', "http://www.w3.org/1999/02/22-rdf-syntax-ns#");
 199                 $xpath->registerNamespace('rss', "http://purl.org/rss/1.0/");
 200                 $xpath->registerNamespace('media', "http://search.yahoo.com/mrss/");
 201                 $xpath->registerNamespace('poco', ActivityNamespace::POCO);
 202
 203                 $author = [];
 204                 $entries = null;
 205
 206                 // Is it RDF?
 207                 if ($xpath->query('/rdf:RDF/rss:channel')->length > 0) {
 208                         $author["author-link"] = XML::getFirstNodeValue($xpath, '/rdf:RDF/rss:channel/rss:link/text()');
 209                         $author["author-name"] = XML::getFirstNodeValue($xpath, '/rdf:RDF/rss:channel/rss:title/text()');
 210
 211                         if (empty($author["author-name"])) {
 212                                 $author["author-name"] = XML::getFirstNodeValue($xpath, '/rdf:RDF/rss:channel/rss:description/text()');
 213                         }
 214                         $entries = $xpath->query('/rdf:RDF/rss:item');
 215                 }
 216
 217                 // Is it Atom?
 218                 if ($xpath->query('/atom:feed')->length > 0) {
 219                         $alternate = XML::getFirstAttributes($xpath, "atom:link[@rel='alternate']");
 220                         if (is_object($alternate)) {
 221                                 foreach ($alternate AS $attribute) {
 222                                         if ($attribute->name == "href") {
 223                                                 $author["author-link"] = $attribute->textContent;
 224                                         }
 225                                 }
 226                         }
 227
 228                         if (empty($author["author-link"])) {
 229                                 $self = XML::getFirstAttributes($xpath, "atom:link[@rel='self']");
 230                                 if (is_object($self)) {
 231                                         foreach ($self AS $attribute) {
 232                                                 if ($attribute->name == "href") {
 233                                                         $author["author-link"] = $attribute->textContent;
 234                                                 }
 235                                         }
 236                                 }
 237                         }
 238
 239                         if (empty($author["author-link"])) {
 240                                 $author["author-link"] = XML::getFirstNodeValue($xpath, '/atom:feed/atom:id/text()');
 241                         }
 242                         $author["author-avatar"] = XML::getFirstNodeValue($xpath, '/atom:feed/atom:logo/text()');
 243
 244                         $author["author-name"] = XML::getFirstNodeValue($xpath, '/atom:feed/atom:title/text()');
 245
 246                         if (empty($author["author-name"])) {
 247                                 $author["author-name"] = XML::getFirstNodeValue($xpath, '/atom:feed/atom:subtitle/text()');
 248                         }
 249
 250                         if (empty($author["author-name"])) {
 251                                 $author["author-name"] = XML::getFirstNodeValue($xpath, '/atom:feed/atom:author/atom:name/text()');
 252                         }
 253
 254                         $value = XML::getFirstNodeValue($xpath, 'atom:author/poco:displayName/text()');
 255                         if ($value != "") {
 256                                 $author["author-name"] = $value;
 257                         }
 258
 259                         if ($dryRun) {
 260                                 $author["author-id"] = XML::getFirstNodeValue($xpath, '/atom:feed/atom:author/atom:id/text()');
 261
 262                                 // See https://tools.ietf.org/html/rfc4287#section-3.2.2
 263                                 $value = XML::getFirstNodeValue($xpath, 'atom:author/atom:uri/text()');
 264                                 if ($value != "") {
 265                                         $author["author-link"] = $value;
 266                                 }
 267
 268                                 $value = XML::getFirstNodeValue($xpath, 'atom:author/poco:preferredUsername/text()');
 269                                 if ($value != "") {
 270                                         $author["author-nick"] = $value;
 271                                 }
 272
 273                                 $value = XML::getFirstNodeValue($xpath, 'atom:author/poco:address/poco:formatted/text()');
 274                                 if ($value != "") {
 275                                         $author["author-location"] = $value;
 276                                 }
 277
 278                                 $value = XML::getFirstNodeValue($xpath, 'atom:author/poco:note/text()');
 279                                 if ($value != "") {
 280                                         $author["author-about"] = $value;
 281                                 }
 282
 283                                 $avatar = XML::getFirstAttributes($xpath, "atom:author/atom:link[@rel='avatar']");
 284                                 if (is_object($avatar)) {
 285                                         foreach ($avatar AS $attribute) {
 286                                                 if ($attribute->name == "href") {
 287                                                         $author["author-avatar"] = $attribute->textContent;
 288                                                 }
 289                                         }
 290                                 }
 291                         }
 292
 293                         $author["edited"] = $author["created"] = XML::getFirstNodeValue($xpath, '/atom:feed/atom:updated/text()');
 294
 295                         $author["app"] = XML::getFirstNodeValue($xpath, '/atom:feed/atom:generator/text()');
 296
 297                         $entries = $xpath->query('/atom:feed/atom:entry');
 298                 }
 299
 300                 // Is it RSS?
 301                 if ($xpath->query('/rss/channel')->length > 0) {
 302                         $author["author-link"] = XML::getFirstNodeValue($xpath, '/rss/channel/link/text()');
 303
 304                         $author["author-name"] = XML::getFirstNodeValue($xpath, '/rss/channel/title/text()');
 305                         $author["author-avatar"] = XML::getFirstNodeValue($xpath, '/rss/channel/image/url/text()');
 306
 307                         if (empty($author["author-name"])) {
 308                                 $author["author-name"] = XML::getFirstNodeValue($xpath, '/rss/channel/copyright/text()');
 309                         }
 310
 311                         if (empty($author["author-name"])) {
 312                                 $author["author-name"] = XML::getFirstNodeValue($xpath, '/rss/channel/description/text()');
 313                         }
 314
 315                         $author["edited"] = $author["created"] = XML::getFirstNodeValue($xpath, '/rss/channel/pubDate/text()');
 316
 317                         $author["app"] = XML::getFirstNodeValue($xpath, '/rss/channel/generator/text()');
 318
 319                         $entries = $xpath->query('/rss/channel/item');
 320                 }
 321
 322                 if (!$dryRun) {
 323                         $author["author-link"] = $contact["url"];
 324
 325                         if (empty($author["author-name"])) {
 326                                 $author["author-name"] = $contact["name"];
 327                         }
 328
 329                         $author["author-avatar"] = $contact["thumb"];
 330
 331                         $author["owner-link"] = $contact["url"];
 332                         $author["owner-name"] = $contact["name"];
 333                         $author["owner-avatar"] = $contact["thumb"];
 334                 }
 335
 336                 $header = [];
 337                 $header["uid"] = $importer["uid"] ?? 0;
 338                 $header["network"] = Protocol::FEED;
 339                 $header["wall"] = 0;
 340                 $header["origin"] = 0;
 341                 $header["gravity"] = GRAVITY_PARENT;
 342                 $header["private"] = Item::PUBLIC;
 343                 $header["verb"] = Activity::POST;
 344                 $header["object-type"] = Activity\ObjectType::NOTE;
 345
 346                 $header["contact-id"] = $contact["id"] ?? 0;
 347
 348                 if (!is_object($entries)) {
 349                         Logger::info("There are no entries in this feed.");
 350                         return [];
 351                 }
 352
 353                 $items = [];
 354                 $creation_dates = [];
 355
 356                 // Limit the number of items that are about to be fetched
 357                 $total_items = ($entries->length - 1);
 358                 $max_items = DI::config()->get('system', 'max_feed_items');
 359                 if (($max_items > 0) && ($total_items > $max_items)) {
 360                         $total_items = $max_items;
 361                 }
 362
 363                 $postings = [];
 364
 365                 // Importing older entries first
 366                 for ($i = $total_items; $i >= 0; --$i) {
 367                         $entry = $entries->item($i);
 368
 369                         $item = array_merge($header, $author);
 370
 371                         $alternate = XML::getFirstAttributes($xpath, "atom:link[@rel='alternate']", $entry);
 372                         if (!is_object($alternate)) {
 373                                 $alternate = XML::getFirstAttributes($xpath, "atom:link", $entry);
 374                         }
 375                         if (is_object($alternate)) {
 376                                 foreach ($alternate AS $attribute) {
 377                                         if ($attribute->name == "href") {
 378                                                 $item["plink"] = $attribute->textContent;
 379                                         }
 380                                 }
 381                         }
 382
 383                         if (empty($item["plink"])) {
 384                                 $item["plink"] = XML::getFirstNodeValue($xpath, 'link/text()', $entry);
 385                         }
 386
 387                         if (empty($item["plink"])) {
 388                                 $item["plink"] = XML::getFirstNodeValue($xpath, 'rss:link/text()', $entry);
 389                         }
 390
 391                         $item["uri"] = XML::getFirstNodeValue($xpath, 'atom:id/text()', $entry);
 392
 393                         if (empty($item["uri"])) {
 394                                 $item["uri"] = XML::getFirstNodeValue($xpath, 'guid/text()', $entry);
 395                         }
 396
 397                         if (empty($item["uri"])) {
 398                                 $item["uri"] = $item["plink"];
 399                         }
 400
 401                         // Add the base path if missing
 402                         $item["uri"] = Network::addBasePath($item["uri"], $basepath);
 403                         $item["plink"] = Network::addBasePath($item["plink"], $basepath);
 404
 405                         $orig_plink = $item["plink"];
 406
 407                         $item["plink"] = DI::httpRequest()->finalUrl($item["plink"]);
 408
 409                         $item["title"] = XML::getFirstNodeValue($xpath, 'atom:title/text()', $entry);
 410
 411                         if (empty($item["title"])) {
 412                                 $item["title"] = XML::getFirstNodeValue($xpath, 'title/text()', $entry);
 413                         }
 414                         if (empty($item["title"])) {
 415                                 $item["title"] = XML::getFirstNodeValue($xpath, 'rss:title/text()', $entry);
 416                         }
 417
 418                         $item["title"] = html_entity_decode($item["title"], ENT_QUOTES, 'UTF-8');
 419
 420                         $published = XML::getFirstNodeValue($xpath, 'atom:published/text()', $entry);
 421
 422                         if (empty($published)) {
 423                                 $published = XML::getFirstNodeValue($xpath, 'pubDate/text()', $entry);
 424                         }
 425
 426                         if (empty($published)) {
 427                                 $published = XML::getFirstNodeValue($xpath, 'dc:date/text()', $entry);
 428                         }
 429
 430                         $updated = XML::getFirstNodeValue($xpath, 'atom:updated/text()', $entry);
 431
 432                         if (empty($updated) && !empty($published)) {
 433                                 $updated = $published;
 434                         }
 435
 436                         if (empty($published) && !empty($updated)) {
 437                                 $published = $updated;
 438                         }
 439
 440                         if ($published != "") {
 441                                 $item["created"] = $published;
 442                         }
 443
 444                         if ($updated != "") {
 445                                 $item["edited"] = $updated;
 446                         }
 447
 448                         if (!$dryRun) {
 449                                 $condition = ["`uid` = ? AND `uri` = ? AND `network` IN (?, ?)",
 450                                         $importer["uid"], $item["uri"], Protocol::FEED, Protocol::DFRN];
 451                                 $previous = Item::selectFirst(['id', 'created'], $condition);
 452                                 if (DBA::isResult($previous)) {
 453                                         // Use the creation date when the post had been stored. It can happen this date changes in the feed.
 454                                         $creation_dates[] = $previous['created'];
 455                                         Logger::info("Item with uri " . $item["uri"] . " for user " . $importer["uid"] . " already existed under id " . $previous["id"]);
 456                                         continue;
 457                                 }
 458                                 $creation_dates[] = DateTimeFormat::utc($item['created']);
 459                         }
 460
 461                         $creator = XML::getFirstNodeValue($xpath, 'author/text()', $entry);
 462
 463                         if (empty($creator)) {
 464                                 $creator = XML::getFirstNodeValue($xpath, 'atom:author/atom:name/text()', $entry);
 465                         }
 466
 467                         if (empty($creator)) {
 468                                 $creator = XML::getFirstNodeValue($xpath, 'dc:creator/text()', $entry);
 469                         }
 470
 471                         if ($creator != "") {
 472                                 $item["author-name"] = $creator;
 473                         }
 474
 475                         $creator = XML::getFirstNodeValue($xpath, 'dc:creator/text()', $entry);
 476
 477                         if ($creator != "") {
 478                                 $item["author-name"] = $creator;
 479                         }
 480
 481                         /// @TODO ?
 482                         // <category>Ausland</category>
 483                         // <media:thumbnail width="152" height="76" url="http://www.taz.de/picture/667875/192/14388767.jpg"/>
 484
 485                         $attachments = [];
 486
 487                         $enclosures = $xpath->query("enclosure|atom:link[@rel='enclosure']", $entry);
 488                         foreach ($enclosures AS $enclosure) {
 489                                 $href = "";
 490                                 $length = null;
 491                                 $type = null;
 492
 493                                 foreach ($enclosure->attributes AS $attribute) {
 494                                         if (in_array($attribute->name, ["url", "href"])) {
 495                                                 $href = $attribute->textContent;
 496                                         } elseif ($attribute->name == "length") {
 497                                                 $length = (int)$attribute->textContent;
 498                                         } elseif ($attribute->name == "type") {
 499                                                 $type = $attribute->textContent;
 500                                         }
 501                                 }
 502
 503                                 if (!empty($href)) {
 504                                         $attachments[] = ['type' => Post\Media::DOCUMENT, 'url' => $href, 'mimetype' => $type, 'size' => $length];
 505                                 }
 506                         }
 507
 508                         $taglist = [];
 509                         $categories = $xpath->query("category", $entry);
 510                         foreach ($categories AS $category) {
 511                                 $taglist[] = $category->nodeValue;
 512                         }
 513
 514                         $body = trim(XML::getFirstNodeValue($xpath, 'atom:content/text()', $entry));
 515
 516                         if (empty($body)) {
 517                                 $body = trim(XML::getFirstNodeValue($xpath, 'content:encoded/text()', $entry));
 518                         }
 519
 520                         $summary = trim(XML::getFirstNodeValue($xpath, 'atom:summary/text()', $entry));
 521
 522                         if (empty($summary)) {
 523                                 $summary = trim(XML::getFirstNodeValue($xpath, 'description/text()', $entry));
 524                         }
 525
 526                         if (empty($body)) {
 527                                 $body = $summary;
 528                                 $summary = '';
 529                         }
 530
 531                         if ($body == $summary) {
 532                                 $summary = '';
 533                         }
 534
 535                         // remove the content of the title if it is identically to the body
 536                         // This helps with auto generated titles e.g. from tumblr
 537                         if (self::titleIsBody($item["title"], $body)) {
 538                                 $item["title"] = "";
 539                         }
 540                         $item["body"] = HTML::toBBCode($body, $basepath);
 541
 542                         // Remove tracking pixels
 543                         $item["body"] = preg_replace("/\[img=1x1\]([^\[\]]*)\[\/img\]/Usi", '', $item["body"]);
 544
 545                         if (($item["body"] == '') && ($item["title"] != '')) {
 546                                 $item["body"] = $item["title"];
 547                                 $item["title"] = '';
 548                         }
 549
 550                         if ($dryRun) {
 551                                 $items[] = $item;
 552                                 break;
 553                         } elseif (!Item::isValid($item)) {
 554                                 Logger::info('Feed is invalid', ['created' => $item['created'], 'uid' => $item['uid'], 'uri' => $item['uri']]);
 555                                 continue;
 556                         }
 557
 558                         $preview = '';
 559                         if (!empty($contact["fetch_further_information"]) && ($contact["fetch_further_information"] < 3)) {
 560                                 // Handle enclosures and treat them as preview picture
 561                                 foreach ($attachments AS $attachment) {
 562                                         if ($attachment["mimetype"] == "image/jpeg") {
 563                                                 $preview = $attachment["url"];
 564                                         }
 565                                 }
 566
 567                                 // Remove a possible link to the item itself
 568                                 $item["body"] = str_replace($item["plink"], '', $item["body"]);
 569                                 $item["body"] = trim(preg_replace('/\[url\=\](\w+.*?)\[\/url\]/i', '', $item["body"]));
 570
 571                                 // Replace the content when the title is longer than the body
 572                                 $replace = (strlen($item["title"]) > strlen($item["body"]));
 573
 574                                 // Replace it, when there is an image in the body
 575                                 if (strstr($item["body"], '[/img]')) {
 576                                         $replace = true;
 577                                 }
 578
 579                                 // Replace it, when there is a link in the body
 580                                 if (strstr($item["body"], '[/url]')) {
 581                                         $replace = true;
 582                                 }
 583
 584                                 $saved_body = $item["body"];
 585                                 $saved_title = $item["title"];
 586
 587                                 if ($replace) {
 588                                         $item["body"] = trim($item["title"]);
 589                                 }
 590
 591                                 $data = ParseUrl::getSiteinfoCached($item['plink'], true);
 592                                 if (!empty($data['text']) && !empty($data['title']) && (mb_strlen($item['body']) < mb_strlen($data['text']))) {
 593                                         // When the fetched page info text is longer than the body, we do try to enhance the body
 594                                         if (!empty($item['body']) && (strpos($data['title'], $item['body']) === false) && (strpos($data['text'], $item['body']) === false)) {
 595                                                 // The body is not part of the fetched page info title or page info text. So we add the text to the body
 596                                                 $item['body'] .= "\n\n" . $data['text'];
 597                                         } else {
 598                                                 // Else we replace the body with the page info text
 599                                                 $item['body'] = $data['text'];
 600                                         }
 601                                 }
 602
 603                                 $data = PageInfo::queryUrl($item["plink"], false, $preview, ($contact["fetch_further_information"] == 2), $contact["ffi_keyword_denylist"] ?? '');
 604
 605                                 if (!empty($data)) {
 606                                         // Take the data that was provided by the feed if the query is empty
 607                                         if (($data['type'] == 'link') && empty($data['title']) && empty($data['text'])) {
 608                                                 $data['title'] = $saved_title;
 609                                                 $item["body"] = $saved_body;
 610                                         }
 611
 612                                         $data_text = strip_tags(trim($data['text'] ?? ''));
 613                                         $item_body = strip_tags(trim($item['body'] ?? ''));
 614
 615                                         if (!empty($data_text) && (($data_text == $item_body) || strstr($item_body, $data_text))) {
 616                                                 $data['text'] = '';
 617                                         }
 618
 619                                         // We always strip the title since it will be added in the page information
 620                                         $item["title"] = "";
 621                                         $item["body"] = $item["body"] . "\n" . PageInfo::getFooterFromData($data, false);
 622                                         $taglist = $contact["fetch_further_information"] == 2 ? PageInfo::getTagsFromUrl($item["plink"], $preview, $contact["ffi_keyword_denylist"] ?? '') : [];
 623                                         $item["object-type"] = Activity\ObjectType::BOOKMARK;
 624                                         $attachments = [];
 625                                 }
 626                         } else {
 627                                 if (!empty($summary)) {
 628                                         $item["body"] = '[abstract]' . HTML::toBBCode($summary, $basepath) . "[/abstract]\n" . $item["body"];
 629                                 }
 630
 631                                 if (!empty($contact["fetch_further_information"]) && ($contact["fetch_further_information"] == 3)) {
 632                                         if (empty($taglist)) {
 633                                                 $taglist = PageInfo::getTagsFromUrl($item["plink"], $preview, $contact["ffi_keyword_denylist"] ?? '');
 634                                         }
 635                                         $item["body"] .= "\n" . self::tagToString($taglist);
 636                                 } else {
 637                                         $taglist = [];
 638                                 }
 639
 640                                 // Add the link to the original feed entry if not present in feed
 641                                 if (($item['plink'] != '') && !strstr($item["body"], $item['plink'])) {
 642                                         $item["body"] .= "[hr][url]" . $item['plink'] . "[/url]";
 643                                 }
 644                         }
 645
 646                         Logger::info('Stored feed', ['item' => $item]);
 647
 648                         $notify = Item::isRemoteSelf($contact, $item);
 649
 650                         // Distributed items should have a well formatted URI.
 651                         // Additionally we have to avoid conflicts with identical URI between imported feeds and these items.
 652                         if ($notify) {
 653                                 $item['guid'] = Item::guidFromUri($orig_plink, DI::baseUrl()->getHostname());
 654                                 unset($item['uri']);
 655                                 unset($item['thr-parent']);
 656                                 unset($item['parent-uri']);
 657
 658                                 // Set the delivery priority for "remote self" to "medium"
 659                                 $notify = PRIORITY_MEDIUM;
 660                         }
 661
 662                         $postings[] = ['item' => $item, 'notify' => $notify,
 663                                 'taglist' => $taglist, 'attachments' => $attachments];
 664                 }
 665
 666                 if (!empty($postings)) {
 667                         $total = count($postings);
 668                         if ($total > 1) {
 669                                 $interval = self::getPollInterval($contact);
 670                                 $delay = round(($interval * 60) / $total);
 671                                 Logger::notice('Got posting delay', ['delay' => $delay, 'interval' => $interval, 'items' => $total, 'cid' => $contact['id'], 'url' => $contact['url']]);
 672                         } else {
 673                                 $delay = 0;
 674                         }
 675
 676                         $post_delay = 0;
 677
 678                         foreach ($postings as $posting) {
 679                                 if ($delay > 0) {
 680                                         $publish_at = DateTimeFormat::utc('now + ' . $post_delay . ' minute');
 681                                         Logger::notice('Got publishing date', ['delay' => $delay, 'publish_at' => $publish_at, 'cid' => $contact['id'], 'url' => $contact['url']]);
 682                                         $post_delay += $delay;
 683                                 }
 684
 685                                 $id = Item::insert($posting['item'], $posting['notify']);
 686
 687                                 Logger::notice("Feed for contact " . $contact["url"] . " stored under id " . $id);
 688
 689                                 if (!empty($id) && (!empty($posting['taglist']) || !empty($posting['attachments']))) {
 690                                         $feeditem = Item::selectFirst(['uri-id'], ['id' => $id]);
 691                                         foreach ($posting['taglist'] as $tag) {
 692                                                 Tag::store($feeditem['uri-id'], Tag::HASHTAG, $tag);
 693                                         }
 694                                         foreach ($posting['attachments'] as $attachment) {
 695                                                 $attachment['uri-id'] = $feeditem['uri-id'];
 696                                                 Post\Media::insert($attachment);
 697                                         }
 698                                 }
 699                         }
 700                 }
 701
 702                 if (!$dryRun && DI::config()->get('system', 'adjust_poll_frequency')) {
 703                         self::adjustPollFrequency($contact, $creation_dates);
 704                 }
 705
 706                 return ["header" => $author, "items" => $items];
 707         }
 708
 709         /**
 710          * Automatically adjust the poll frequency according to the post frequency
 711          *
 712          * @param array $contact
 713          * @param array $creation_dates
 714          * @return void
 715          */
 716         private static function adjustPollFrequency(array $contact, array $creation_dates)
 717         {
 718                 if ($contact['network'] != Protocol::FEED) {
 719                         Logger::info('Contact is no feed, skip.', ['id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url'], 'network' => $contact['network']]);
 720                         return;
 721                 }
 722
 723                 if (!empty($creation_dates)) {
 724                         // Count the post frequency and the earliest and latest post date
 725                         $frequency = [];
 726                         $oldest = time();
 727                         $newest = 0;
 728                         $oldest_date = $newest_date = '';
 729
 730                         foreach ($creation_dates as $date) {
 731                                 $timestamp = strtotime($date);
 732                                 $day = intdiv($timestamp, 86400);
 733                                 $hour = $timestamp % 86400;
 734
 735                                 // Only have a look at values from the last seven days
 736                                 if (((time() / 86400) - $day) < 7) {
 737                                         if (empty($frequency[$day])) {
 738                                                 $frequency[$day] = ['count' => 1, 'low' => $hour, 'high' => $hour];
 739                                         } else {
 740                                                 ++$frequency[$day]['count'];
 741                                                 if ($frequency[$day]['low'] > $hour) {
 742                                                         $frequency[$day]['low'] = $hour;
 743                                                 }
 744                                                 if ($frequency[$day]['high'] < $hour) {
 745                                                         $frequency[$day]['high'] = $hour;
 746                                                 }
 747                                         }
 748                                 }
 749                                 if ($oldest > $day) {
 750                                         $oldest = $day;
 751                                         $oldest_date = $date;
 752                                 }
 753
 754                                 if ($newest < $day) {
 755                                         $newest = $day;
 756                                         $newest_date = $date;
 757                                 }
 758                         }
 759
 760                         if (count($creation_dates) == 1) {
 761                                 Logger::info('Feed had posted a single time, switching to daily polling', ['newest' => $newest_date, 'id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url']]);
 762                                 $priority = 8; // Poll once a day
 763                         }
 764
 765                         if (empty($priority) && (((time() / 86400) - $newest) > 730)) {
 766                                 Logger::info('Feed had not posted for two years, switching to monthly polling', ['newest' => $newest_date, 'id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url']]);
 767                                 $priority = 10; // Poll every month
 768                         }
 769
 770                         if (empty($priority) && (((time() / 86400) - $newest) > 365)) {
 771                                 Logger::info('Feed had not posted for a year, switching to weekly polling', ['newest' => $newest_date, 'id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url']]);
 772                                 $priority = 9; // Poll every week
 773                         }
 774
 775                         if (empty($priority) && empty($frequency)) {
 776                                 Logger::info('Feed had not posted for at least a week, switching to daily polling', ['newest' => $newest_date, 'id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url']]);
 777                                 $priority = 8; // Poll once a day
 778                         }
 779
 780                         if (empty($priority)) {
 781                                 // Calculate the highest "posts per day" value
 782                                 $max = 0;
 783                                 foreach ($frequency as $entry) {
 784                                         if (($entry['count'] == 1) || ($entry['high'] == $entry['low'])) {
 785                                                 continue;
 786                                         }
 787
 788                                         // We take the earliest and latest post day and interpolate the number of post per day
 789                                         // that would had been created with this post frequency
 790
 791                                         // Assume at least four hours between oldest and newest post per day - should be okay for news outlets
 792                                         $duration = max($entry['high'] - $entry['low'], 14400);
 793                                         $ppd = (86400 / $duration) * $entry['count'];
 794                                         if ($ppd > $max) {
 795                                                 $max = $ppd;
 796                                         }
 797                                 }
 798                                 if ($max > 48) {
 799                                         $priority = 1; // Poll every quarter hour
 800                                 } elseif ($max > 24) {
 801                                         $priority = 2; // Poll half an hour
 802                                 } elseif ($max > 12) {
 803                                         $priority = 3; // Poll hourly
 804                                 } elseif ($max > 8) {
 805                                         $priority = 4; // Poll every two hours
 806                                 } elseif ($max > 4) {
 807                                         $priority = 5; // Poll every three hours
 808                                 } elseif ($max > 2) {
 809                                         $priority = 6; // Poll every six hours
 810                                 } else {
 811                                         $priority = 7; // Poll twice a day
 812                                 }
 813                                 Logger::info('Calculated priority by the posts per day', ['priority' => $priority, 'max' => round($max, 2), 'id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url']]);
 814                         }
 815                 } else {
 816                         Logger::info('No posts, switching to daily polling', ['id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url']]);
 817                         $priority = 8; // Poll once a day
 818                 }
 819
 820                 if ($contact['rating'] != $priority) {
 821                         Logger::notice('Adjusting priority', ['old' => $contact['rating'], 'new' => $priority, 'id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url']]);
 822                         DBA::update('contact', ['rating' => $priority], ['id' => $contact['id']]);
 823                 }
 824         }
 825
 826         /**
 827          * Convert a tag array to a tag string
 828          *
 829          * @param array $tags
 830          * @return string tag string
 831          */
 832         private static function tagToString(array $tags)
 833         {
 834                 $tagstr = '';
 835
 836                 foreach ($tags as $tag) {
 837                         if ($tagstr != "") {
 838                                 $tagstr .= ", ";
 839                         }
 840
 841                         $tagstr .= "#[url=" . DI::baseUrl() . "/search?tag=" . urlencode($tag) . "]" . $tag . "[/url]";
 842                 }
 843
 844                 return $tagstr;
 845         }
 846
 847         private static function titleIsBody($title, $body)
 848         {
 849                 $title = strip_tags($title);
 850                 $title = trim($title);
 851                 $title = html_entity_decode($title, ENT_QUOTES, 'UTF-8');
 852                 $title = str_replace(["\n", "\r", "\t", " "], ["", "", "", ""], $title);
 853
 854                 $body = strip_tags($body);
 855                 $body = trim($body);
 856                 $body = html_entity_decode($body, ENT_QUOTES, 'UTF-8');
 857                 $body = str_replace(["\n", "\r", "\t", " "], ["", "", "", ""], $body);
 858
 859                 if (strlen($title) < strlen($body)) {
 860                         $body = substr($body, 0, strlen($title));
 861                 }
 862
 863                 if (($title != $body) && (substr($title, -3) == "...")) {
 864                         $pos = strrpos($title, "...");
 865                         if ($pos > 0) {
 866                                 $title = substr($title, 0, $pos);
 867                                 $body = substr($body, 0, $pos);
 868                         }
 869                 }
 870                 return ($title == $body);
 871         }
 872
 873         /**
 874          * Creates the Atom feed for a given nickname
 875          *
 876          * Supported filters:
 877          * - activity (default): all the public posts
 878          * - posts: all the public top-level posts
 879          * - comments: all the public replies
 880          *
 881          * Updates the provided last_update parameter if the result comes from the
 882          * cache or it is empty
 883          *
 884          * @param string  $owner_nick  Nickname of the feed owner
 885          * @param string  $last_update Date of the last update
 886          * @param integer $max_items   Number of maximum items to fetch
 887          * @param string  $filter      Feed items filter (activity, posts or comments)
 888          * @param boolean $nocache     Wether to bypass caching
 889          *
 890          * @return string Atom feed
 891          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 892          * @throws \ImagickException
 893          */
 894         public static function atom($owner_nick, $last_update, $max_items = 300, $filter = 'activity', $nocache = false)
 895         {
 896                 $stamp = microtime(true);
 897
 898                 $owner = User::getOwnerDataByNick($owner_nick);
 899                 if (!$owner) {
 900                         return;
 901                 }
 902
 903                 $cachekey = "feed:feed:" . $owner_nick . ":" . $filter . ":" . $last_update;
 904
 905                 $previous_created = $last_update;
 906
 907                 // Don't cache when the last item was posted less then 15 minutes ago (Cache duration)
 908                 if ((time() - strtotime($owner['last-item'])) < 15*60) {
 909                         $result = DI::cache()->get($cachekey);
 910                         if (!$nocache && !is_null($result)) {
 911                                 Logger::info('Cached feed duration', ['seconds' => number_format(microtime(true) - $stamp, 3), 'nick' => $owner_nick, 'filter' => $filter, 'created' => $previous_created]);
 912                                 return $result['feed'];
 913                         }
 914                 }
 915
 916                 $check_date = empty($last_update) ? '' : DateTimeFormat::utc($last_update);
 917                 $authorid = Contact::getIdForURL($owner["url"]);
 918
 919                 $condition = ["`uid` = ? AND `received` > ? AND NOT `deleted` AND `gravity` IN (?, ?)
 920                         AND `private` != ? AND `visible` AND `wall` AND `parent-network` IN (?, ?, ?, ?)",
 921                         $owner["uid"], $check_date, GRAVITY_PARENT, GRAVITY_COMMENT,
 922                         Item::PRIVATE, Protocol::ACTIVITYPUB,
 923                         Protocol::OSTATUS, Protocol::DFRN, Protocol::DIASPORA];
 924
 925                 if ($filter === 'comments') {
 926                         $condition[0] .= " AND `object-type` = ? ";
 927                         $condition[] = Activity\ObjectType::COMMENT;
 928                 }
 929
 930                 if ($owner['account-type'] != User::ACCOUNT_TYPE_COMMUNITY) {
 931                         $condition[0] .= " AND `contact-id` = ? AND `author-id` = ?";
 932                         $condition[] = $owner["id"];
 933                         $condition[] = $authorid;
 934                 }
 935
 936                 $params = ['order' => ['received' => true], 'limit' => $max_items];
 937
 938                 if ($filter === 'posts') {
 939                         $ret = Item::selectThread([], $condition, $params);
 940                 } else {
 941                         $ret = Item::select([], $condition, $params);
 942                 }
 943
 944                 $items = Item::inArray($ret);
 945
 946                 $doc = new DOMDocument('1.0', 'utf-8');
 947                 $doc->formatOutput = true;
 948
 949                 $root = self::addHeader($doc, $owner, $filter);
 950
 951                 foreach ($items as $item) {
 952                         $entry = self::entry($doc, $item, $owner);
 953                         $root->appendChild($entry);
 954
 955                         if ($last_update < $item['created']) {
 956                                 $last_update = $item['created'];
 957                         }
 958                 }
 959
 960                 $feeddata = trim($doc->saveXML());
 961
 962                 $msg = ['feed' => $feeddata, 'last_update' => $last_update];
 963                 DI::cache()->set($cachekey, $msg, Duration::QUARTER_HOUR);
 964
 965                 Logger::info('Feed duration', ['seconds' => number_format(microtime(true) - $stamp, 3), 'nick' => $owner_nick, 'filter' => $filter, 'created' => $previous_created]);
 966
 967                 return $feeddata;
 968         }
 969
 970         /**
 971          * Adds the header elements to the XML document
 972          *
 973          * @param DOMDocument $doc       XML document
 974          * @param array       $owner     Contact data of the poster
 975          * @param string      $filter    The related feed filter (activity, posts or comments)
 976          *
 977          * @return object header root element
 978          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 979          */
 980         private static function addHeader(DOMDocument $doc, array $owner, $filter)
 981         {
 982                 $root = $doc->createElementNS(ActivityNamespace::ATOM1, 'feed');
 983                 $doc->appendChild($root);
 984
 985                 $title = '';
 986                 $selfUri = '/feed/' . $owner["nick"] . '/';
 987                 switch ($filter) {
 988                         case 'activity':
 989                                 $title = DI::l10n()->t('%s\'s timeline', $owner['name']);
 990                                 $selfUri .= $filter;
 991                                 break;
 992                         case 'posts':
 993                                 $title = DI::l10n()->t('%s\'s posts', $owner['name']);
 994                                 break;
 995                         case 'comments':
 996                                 $title = DI::l10n()->t('%s\'s comments', $owner['name']);
 997                                 $selfUri .= $filter;
 998                                 break;
 999                 }
1000
1001                 $attributes = ["uri" => "https://friendi.ca", "version" => FRIENDICA_VERSION . "-" . DB_UPDATE_VERSION];
1002                 XML::addElement($doc, $root, "generator", FRIENDICA_PLATFORM, $attributes);
1003                 XML::addElement($doc, $root, "id", DI::baseUrl() . "/profile/" . $owner["nick"]);
1004                 XML::addElement($doc, $root, "title", $title);
1005                 XML::addElement($doc, $root, "subtitle", sprintf("Updates from %s on %s", $owner["name"], DI::config()->get('config', 'sitename')));
1006                 XML::addElement($doc, $root, "logo", $owner["photo"]);
1007                 XML::addElement($doc, $root, "updated", DateTimeFormat::utcNow(DateTimeFormat::ATOM));
1008
1009                 $author = self::addAuthor($doc, $owner);
1010                 $root->appendChild($author);
1011
1012                 $attributes = ["href" => $owner["url"], "rel" => "alternate", "type" => "text/html"];
1013                 XML::addElement($doc, $root, "link", "", $attributes);
1014
1015                 OStatus::hublinks($doc, $root, $owner["nick"]);
1016
1017                 $attributes = ["href" => DI::baseUrl() . $selfUri, "rel" => "self", "type" => "application/atom+xml"];
1018                 XML::addElement($doc, $root, "link", "", $attributes);
1019
1020                 return $root;
1021         }
1022
1023         /**
1024          * Adds the author element to the XML document
1025          *
1026          * @param DOMDocument $doc          XML document
1027          * @param array       $owner        Contact data of the poster
1028          *
1029          * @return \DOMElement author element
1030          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1031          */
1032         private static function addAuthor(DOMDocument $doc, array $owner)
1033         {
1034                 $author = $doc->createElement("author");
1035                 XML::addElement($doc, $author, "uri", $owner["url"]);
1036                 XML::addElement($doc, $author, "name", $owner["nick"]);
1037                 XML::addElement($doc, $author, "email", $owner["addr"]);
1038
1039                 return $author;
1040         }
1041
1042         /**
1043          * Adds an entry element to the XML document
1044          *
1045          * @param DOMDocument $doc       XML document
1046          * @param array       $item      Data of the item that is to be posted
1047          * @param array       $owner     Contact data of the poster
1048          * @param bool        $toplevel  optional default false
1049          *
1050          * @return \DOMElement Entry element
1051          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1052          * @throws \ImagickException
1053          */
1054         private static function entry(DOMDocument $doc, array $item, array $owner)
1055         {
1056                 $xml = null;
1057
1058                 $repeated_guid = OStatus::getResharedGuid($item);
1059                 if ($repeated_guid != "") {
1060                         $xml = self::reshareEntry($doc, $item, $owner, $repeated_guid);
1061                 }
1062
1063                 if ($xml) {
1064                         return $xml;
1065                 }
1066
1067                 return self::noteEntry($doc, $item, $owner);
1068         }
1069
1070                 /**
1071          * Adds an entry element with reshared content
1072          *
1073          * @param DOMDocument $doc           XML document
1074          * @param array       $item          Data of the item that is to be posted
1075          * @param array       $owner         Contact data of the poster
1076          * @param string      $repeated_guid guid
1077          * @param bool        $toplevel      Is it for en entry element (false) or a feed entry (true)?
1078          *
1079          * @return bool Entry element
1080          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1081          * @throws \ImagickException
1082          */
1083         private static function reshareEntry(DOMDocument $doc, array $item, array $owner, $repeated_guid)
1084         {
1085                 if (($item['gravity'] != GRAVITY_PARENT) && (Strings::normaliseLink($item["author-link"]) != Strings::normaliseLink($owner["url"]))) {
1086                         Logger::info('Feed entry author does not match feed owner', ['owner' => $owner["url"], 'author' => $item["author-link"]]);
1087                 }
1088
1089                 $entry = OStatus::entryHeader($doc, $owner, $item, false);
1090
1091                 $condition = ['uid' => $owner["uid"], 'guid' => $repeated_guid, 'private' => [Item::PUBLIC, Item::UNLISTED],
1092                         'network' => Protocol::FEDERATED];
1093                 $repeated_item = Item::selectFirst([], $condition);
1094                 if (!DBA::isResult($repeated_item)) {
1095                         return false;
1096                 }
1097
1098                 self::entryContent($doc, $entry, $item, self::getTitle($repeated_item), Activity::SHARE, false);
1099
1100                 self::entryFooter($doc, $entry, $item, $owner);
1101
1102                 return $entry;
1103         }
1104
1105         /**
1106          * Adds a regular entry element
1107          *
1108          * @param DOMDocument $doc       XML document
1109          * @param array       $item      Data of the item that is to be posted
1110          * @param array       $owner     Contact data of the poster
1111          * @param bool        $toplevel  Is it for en entry element (false) or a feed entry (true)?
1112          *
1113          * @return \DOMElement Entry element
1114          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1115          * @throws \ImagickException
1116          */
1117         private static function noteEntry(DOMDocument $doc, array $item, array $owner)
1118         {
1119                 if (($item['gravity'] != GRAVITY_PARENT) && (Strings::normaliseLink($item["author-link"]) != Strings::normaliseLink($owner["url"]))) {
1120                         Logger::info('Feed entry author does not match feed owner', ['owner' => $owner["url"], 'author' => $item["author-link"]]);
1121                 }
1122
1123                 $entry = OStatus::entryHeader($doc, $owner, $item, false);
1124
1125                 self::entryContent($doc, $entry, $item, self::getTitle($item), '', true);
1126
1127                 self::entryFooter($doc, $entry, $item, $owner);
1128
1129                 return $entry;
1130         }
1131
1132         /**
1133          * Adds elements to the XML document
1134          *
1135          * @param DOMDocument $doc       XML document
1136          * @param \DOMElement $entry     Entry element where the content is added
1137          * @param array       $item      Data of the item that is to be posted
1138          * @param array       $owner     Contact data of the poster
1139          * @param string      $title     Title for the post
1140          * @param string      $verb      The activity verb
1141          * @param bool        $complete  Add the "status_net" element?
1142          * @param bool        $feed_mode Behave like a regular feed for users if true
1143          * @return void
1144          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1145          */
1146         private static function entryContent(DOMDocument $doc, \DOMElement $entry, array $item, $title, $verb = "", $complete = true)
1147         {
1148                 if ($verb == "") {
1149                         $verb = OStatus::constructVerb($item);
1150                 }
1151
1152                 XML::addElement($doc, $entry, "id", $item["uri"]);
1153                 XML::addElement($doc, $entry, "title", html_entity_decode($title, ENT_QUOTES, 'UTF-8'));
1154
1155                 $body = OStatus::formatPicturePost($item['body']);
1156
1157                 $body = BBCode::convert($body, false, BBCode::OSTATUS);
1158
1159                 XML::addElement($doc, $entry, "content", $body, ["type" => "html"]);
1160
1161                 XML::addElement($doc, $entry, "link", "", ["rel" => "alternate", "type" => "text/html",
1162                                                                 "href" => DI::baseUrl()."/display/".$item["guid"]]
1163                 );
1164
1165                 XML::addElement($doc, $entry, "published", DateTimeFormat::utc($item["created"]."+00:00", DateTimeFormat::ATOM));
1166                 XML::addElement($doc, $entry, "updated", DateTimeFormat::utc($item["edited"]."+00:00", DateTimeFormat::ATOM));
1167         }
1168
1169         /**
1170          * Adds the elements at the foot of an entry to the XML document
1171          *
1172          * @param DOMDocument $doc       XML document
1173          * @param object      $entry     The entry element where the elements are added
1174          * @param array       $item      Data of the item that is to be posted
1175          * @param array       $owner     Contact data of the poster
1176          * @param bool        $complete  default true
1177          * @return void
1178          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
1179          */
1180         private static function entryFooter(DOMDocument $doc, $entry, array $item, array $owner)
1181         {
1182                 $mentioned = [];
1183
1184                 if ($item['gravity'] != GRAVITY_PARENT) {
1185                         $parent = Item::selectFirst(['guid', 'author-link', 'owner-link'], ['id' => $item['parent']]);
1186
1187                         $thrparent = Item::selectFirst(['guid', 'author-link', 'owner-link', 'plink'], ['uid' => $owner["uid"], 'uri' => $item['thr-parent']]);
1188
1189                         if (DBA::isResult($thrparent)) {
1190                                 $mentioned[$thrparent["author-link"]] = $thrparent["author-link"];
1191                                 $mentioned[$thrparent["owner-link"]] = $thrparent["owner-link"];
1192                                 $parent_plink = $thrparent["plink"];
1193                         } else {
1194                                 $mentioned[$parent["author-link"]] = $parent["author-link"];
1195                                 $mentioned[$parent["owner-link"]] = $parent["owner-link"];
1196                                 $parent_plink = DI::baseUrl()."/display/".$parent["guid"];
1197                         }
1198
1199                         $attributes = [
1200                                         "ref" => $item['thr-parent'],
1201                                         "href" => $parent_plink];
1202                         XML::addElement($doc, $entry, "thr:in-reply-to", "", $attributes);
1203
1204                         $attributes = [
1205                                         "rel" => "related",
1206                                         "href" => $parent_plink];
1207                         XML::addElement($doc, $entry, "link", "", $attributes);
1208                 }
1209
1210                 // uri-id isn't present for follow entry pseudo-items
1211                 $tags = Tag::getByURIId($item['uri-id'] ?? 0);
1212                 foreach ($tags as $tag) {
1213                         $mentioned[$tag['url']] = $tag['url'];
1214                 }
1215
1216                 foreach ($tags as $tag) {
1217                         if ($tag['type'] == Tag::HASHTAG) {
1218                                 XML::addElement($doc, $entry, "category", "", ["term" => $tag['name']]);
1219                         }
1220                 }
1221
1222                 OStatus::getAttachment($doc, $entry, $item);
1223         }
1224
1225         /**
1226          * Fetch or create title for feed entry
1227          *
1228          * @param array $item
1229          * @return string title
1230          */
1231         private static function getTitle(array $item)
1232         {
1233                 if ($item['title'] != '') {
1234                         return BBCode::convert($item['title'], false, BBCode::OSTATUS);
1235                 }
1236
1237                 // Fetch information about the post
1238                 $siteinfo = BBCode::getAttachedData($item["body"]);
1239                 if (isset($siteinfo["title"])) {
1240                         return $siteinfo["title"];
1241                 }
1242
1243                 // If no bookmark is found then take the first line
1244                 // Remove the share element before fetching the first line
1245                 $title = trim(preg_replace("/\[share.*?\](.*?)\[\/share\]/ism","\n$1\n",$item['body']));
1246
1247                 $title = HTML::toPlaintext(BBCode::convert($title, false), 0, true)."\n";
1248                 $pos = strpos($title, "\n");
1249                 $trailer = "";
1250                 if (($pos == 0) || ($pos > 100)) {
1251                         $pos = 100;
1252                         $trailer = "...";
1253                 }
1254
1255                 return substr($title, 0, $pos) . $trailer;
1256         }
1257 }