1180 lines
39 KiB
PHP
1180 lines
39 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2020, Friendica
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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namespace Friendica\Protocol;
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use DOMDocument;
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use DOMXPath;
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use Friendica\Content\PageInfo;
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use Friendica\Content\Text\BBCode;
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use Friendica\Content\Text\HTML;
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use Friendica\Core\Cache\Duration;
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use Friendica\Core\Logger;
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use Friendica\Core\Protocol;
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use Friendica\Database\DBA;
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use Friendica\DI;
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use Friendica\Model\Contact;
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use Friendica\Model\Item;
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use Friendica\Model\Tag;
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use Friendica\Model\User;
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use Friendica\Util\DateTimeFormat;
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use Friendica\Util\Network;
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use Friendica\Util\ParseUrl;
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use Friendica\Util\Strings;
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use Friendica\Util\XML;
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/**
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* This class contain functions to import feeds (RSS/RDF/Atom)
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*/
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class Feed
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{
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/**
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* consume - process atom feed and update anything/everything we might need to update
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*
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* $xml = the (atom) feed to consume - RSS isn't as fully supported but may work for simple feeds.
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*
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* $importer = the contact_record (joined to user_record) of the local user who owns this relationship.
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* It is this person's stuff that is going to be updated.
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* $contact = the person who is sending us stuff. If not set, we MAY be processing a "follow" activity
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* from an external network and MAY create an appropriate contact record. Otherwise, we MUST
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* have a contact record.
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* $hub = should we find a hub declation in the feed, pass it back to our calling process, who might (or
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* might not) try and subscribe to it.
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* $datedir sorts in reverse order
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* $pass - by default ($pass = 0) we cannot guarantee that a parent item has been
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* imported prior to its children being seen in the stream unless we are certain
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* of how the feed is arranged/ordered.
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* With $pass = 1, we only pull parent items out of the stream.
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* With $pass = 2, we only pull children (comments/likes).
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*
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* So running this twice, first with pass 1 and then with pass 2 will do the right
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* thing regardless of feed ordering. This won't be adequate in a fully-threaded
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* model where comments can have sub-threads. That would require some massive sorting
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* to get all the feed items into a mostly linear ordering, and might still require
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* recursion.
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*
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* @param $xml
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* @param array $importer
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* @param array $contact
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* @param $hub
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* @throws ImagickException
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
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*/
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public static function consume($xml, array $importer, array $contact, &$hub)
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{
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if ($contact['network'] === Protocol::OSTATUS) {
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Logger::info('Consume OStatus messages');
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OStatus::import($xml, $importer, $contact, $hub);
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return;
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}
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if ($contact['network'] === Protocol::FEED) {
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Logger::info('Consume feeds');
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self::import($xml, $importer, $contact);
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return;
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}
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if ($contact['network'] === Protocol::DFRN) {
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Logger::info('Consume DFRN messages');
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$dfrn_importer = DFRN::getImporter($contact['id'], $importer['uid']);
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if (!empty($dfrn_importer)) {
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Logger::info('Now import the DFRN feed');
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DFRN::import($xml, $dfrn_importer, true);
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return;
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}
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}
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}
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/**
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* Read a RSS/RDF/Atom feed and create an item entry for it
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*
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* @param string $xml The feed data
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* @param array $importer The user record of the importer
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* @param array $contact The contact record of the feed
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*
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* @return array Returns the header and the first item in dry run mode
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
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*/
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public static function import($xml, array $importer = [], array $contact = [])
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{
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$dryRun = empty($importer) && empty($contact);
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if ($dryRun) {
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Logger::info("Test Atom/RSS feed");
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} else {
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Logger::info("Import Atom/RSS feed '" . $contact["name"] . "' (Contact " . $contact["id"] . ") for user " . $importer["uid"]);
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}
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if (empty($xml)) {
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Logger::info('XML is empty.');
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return [];
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}
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if (!empty($contact['poll'])) {
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$basepath = $contact['poll'];
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} elseif (!empty($contact['url'])) {
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$basepath = $contact['url'];
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} else {
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$basepath = '';
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}
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$doc = new DOMDocument();
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@$doc->loadXML(trim($xml));
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$xpath = new DOMXPath($doc);
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$xpath->registerNamespace('atom', ActivityNamespace::ATOM1);
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$xpath->registerNamespace('dc', "http://purl.org/dc/elements/1.1/");
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$xpath->registerNamespace('content', "http://purl.org/rss/1.0/modules/content/");
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$xpath->registerNamespace('rdf', "http://www.w3.org/1999/02/22-rdf-syntax-ns#");
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$xpath->registerNamespace('rss', "http://purl.org/rss/1.0/");
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$xpath->registerNamespace('media', "http://search.yahoo.com/mrss/");
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$xpath->registerNamespace('poco', ActivityNamespace::POCO);
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$author = [];
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$entries = null;
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// Is it RDF?
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if ($xpath->query('/rdf:RDF/rss:channel')->length > 0) {
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$author["author-link"] = XML::getFirstNodeValue($xpath, '/rdf:RDF/rss:channel/rss:link/text()');
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$author["author-name"] = XML::getFirstNodeValue($xpath, '/rdf:RDF/rss:channel/rss:title/text()');
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if (empty($author["author-name"])) {
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$author["author-name"] = XML::getFirstNodeValue($xpath, '/rdf:RDF/rss:channel/rss:description/text()');
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}
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$entries = $xpath->query('/rdf:RDF/rss:item');
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}
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// Is it Atom?
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if ($xpath->query('/atom:feed')->length > 0) {
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$alternate = XML::getFirstAttributes($xpath, "atom:link[@rel='alternate']");
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if (is_object($alternate)) {
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foreach ($alternate AS $attribute) {
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if ($attribute->name == "href") {
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$author["author-link"] = $attribute->textContent;
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}
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}
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}
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if (empty($author["author-link"])) {
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$self = XML::getFirstAttributes($xpath, "atom:link[@rel='self']");
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if (is_object($self)) {
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foreach ($self AS $attribute) {
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if ($attribute->name == "href") {
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$author["author-link"] = $attribute->textContent;
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}
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}
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}
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}
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if (empty($author["author-link"])) {
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$author["author-link"] = XML::getFirstNodeValue($xpath, '/atom:feed/atom:id/text()');
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}
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$author["author-avatar"] = XML::getFirstNodeValue($xpath, '/atom:feed/atom:logo/text()');
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$author["author-name"] = XML::getFirstNodeValue($xpath, '/atom:feed/atom:title/text()');
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if (empty($author["author-name"])) {
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$author["author-name"] = XML::getFirstNodeValue($xpath, '/atom:feed/atom:subtitle/text()');
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}
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if (empty($author["author-name"])) {
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$author["author-name"] = XML::getFirstNodeValue($xpath, '/atom:feed/atom:author/atom:name/text()');
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}
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$value = XML::getFirstNodeValue($xpath, 'atom:author/poco:displayName/text()');
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if ($value != "") {
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$author["author-name"] = $value;
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}
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if ($dryRun) {
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$author["author-id"] = XML::getFirstNodeValue($xpath, '/atom:feed/atom:author/atom:id/text()');
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// See https://tools.ietf.org/html/rfc4287#section-3.2.2
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$value = XML::getFirstNodeValue($xpath, 'atom:author/atom:uri/text()');
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if ($value != "") {
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$author["author-link"] = $value;
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}
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$value = XML::getFirstNodeValue($xpath, 'atom:author/poco:preferredUsername/text()');
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if ($value != "") {
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$author["author-nick"] = $value;
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}
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$value = XML::getFirstNodeValue($xpath, 'atom:author/poco:address/poco:formatted/text()');
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if ($value != "") {
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$author["author-location"] = $value;
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}
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$value = XML::getFirstNodeValue($xpath, 'atom:author/poco:note/text()');
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if ($value != "") {
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$author["author-about"] = $value;
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}
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$avatar = XML::getFirstAttributes($xpath, "atom:author/atom:link[@rel='avatar']");
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if (is_object($avatar)) {
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foreach ($avatar AS $attribute) {
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if ($attribute->name == "href") {
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$author["author-avatar"] = $attribute->textContent;
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}
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}
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}
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}
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$author["edited"] = $author["created"] = XML::getFirstNodeValue($xpath, '/atom:feed/atom:updated/text()');
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$author["app"] = XML::getFirstNodeValue($xpath, '/atom:feed/atom:generator/text()');
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$entries = $xpath->query('/atom:feed/atom:entry');
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}
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// Is it RSS?
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if ($xpath->query('/rss/channel')->length > 0) {
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$author["author-link"] = XML::getFirstNodeValue($xpath, '/rss/channel/link/text()');
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$author["author-name"] = XML::getFirstNodeValue($xpath, '/rss/channel/title/text()');
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$author["author-avatar"] = XML::getFirstNodeValue($xpath, '/rss/channel/image/url/text()');
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if (empty($author["author-name"])) {
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$author["author-name"] = XML::getFirstNodeValue($xpath, '/rss/channel/copyright/text()');
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}
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if (empty($author["author-name"])) {
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$author["author-name"] = XML::getFirstNodeValue($xpath, '/rss/channel/description/text()');
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}
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$author["edited"] = $author["created"] = XML::getFirstNodeValue($xpath, '/rss/channel/pubDate/text()');
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$author["app"] = XML::getFirstNodeValue($xpath, '/rss/channel/generator/text()');
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$entries = $xpath->query('/rss/channel/item');
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}
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if (!$dryRun) {
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$author["author-link"] = $contact["url"];
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if (empty($author["author-name"])) {
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$author["author-name"] = $contact["name"];
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}
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$author["author-avatar"] = $contact["thumb"];
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$author["owner-link"] = $contact["url"];
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$author["owner-name"] = $contact["name"];
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$author["owner-avatar"] = $contact["thumb"];
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}
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$header = [];
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$header["uid"] = $importer["uid"] ?? 0;
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$header["network"] = Protocol::FEED;
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$header["wall"] = 0;
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$header["origin"] = 0;
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$header["gravity"] = GRAVITY_PARENT;
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$header["private"] = Item::PUBLIC;
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$header["verb"] = Activity::POST;
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$header["object-type"] = Activity\ObjectType::NOTE;
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$header["contact-id"] = $contact["id"] ?? 0;
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if (!is_object($entries)) {
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Logger::info("There are no entries in this feed.");
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return [];
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}
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$items = [];
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$creation_dates = [];
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// Limit the number of items that are about to be fetched
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$total_items = ($entries->length - 1);
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$max_items = DI::config()->get('system', 'max_feed_items');
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if (($max_items > 0) && ($total_items > $max_items)) {
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$total_items = $max_items;
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}
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// Importing older entries first
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for ($i = $total_items; $i >= 0; --$i) {
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$entry = $entries->item($i);
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$item = array_merge($header, $author);
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$alternate = XML::getFirstAttributes($xpath, "atom:link[@rel='alternate']", $entry);
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if (!is_object($alternate)) {
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$alternate = XML::getFirstAttributes($xpath, "atom:link", $entry);
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}
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if (is_object($alternate)) {
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foreach ($alternate AS $attribute) {
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if ($attribute->name == "href") {
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$item["plink"] = $attribute->textContent;
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}
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}
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}
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if (empty($item["plink"])) {
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$item["plink"] = XML::getFirstNodeValue($xpath, 'link/text()', $entry);
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}
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if (empty($item["plink"])) {
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$item["plink"] = XML::getFirstNodeValue($xpath, 'rss:link/text()', $entry);
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}
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$item["uri"] = XML::getFirstNodeValue($xpath, 'atom:id/text()', $entry);
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if (empty($item["uri"])) {
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$item["uri"] = XML::getFirstNodeValue($xpath, 'guid/text()', $entry);
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}
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if (empty($item["uri"])) {
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$item["uri"] = $item["plink"];
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}
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// Add the base path if missing
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$item["uri"] = Network::addBasePath($item["uri"], $basepath);
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$item["plink"] = Network::addBasePath($item["plink"], $basepath);
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$orig_plink = $item["plink"];
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$item["plink"] = DI::httpRequest()->finalUrl($item["plink"]);
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$item["parent-uri"] = $item["uri"];
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$item["title"] = XML::getFirstNodeValue($xpath, 'atom:title/text()', $entry);
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if (empty($item["title"])) {
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$item["title"] = XML::getFirstNodeValue($xpath, 'title/text()', $entry);
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}
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if (empty($item["title"])) {
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$item["title"] = XML::getFirstNodeValue($xpath, 'rss:title/text()', $entry);
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}
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$item["title"] = html_entity_decode($item["title"], ENT_QUOTES, 'UTF-8');
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$published = XML::getFirstNodeValue($xpath, 'atom:published/text()', $entry);
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if (empty($published)) {
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$published = XML::getFirstNodeValue($xpath, 'pubDate/text()', $entry);
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}
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if (empty($published)) {
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$published = XML::getFirstNodeValue($xpath, 'dc:date/text()', $entry);
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}
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$updated = XML::getFirstNodeValue($xpath, 'atom:updated/text()', $entry);
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if (empty($updated) && !empty($published)) {
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$updated = $published;
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}
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if (empty($published) && !empty($updated)) {
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$published = $updated;
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}
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if ($published != "") {
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$item["created"] = $published;
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}
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if ($updated != "") {
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$item["edited"] = $updated;
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}
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if (!$dryRun) {
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$condition = ["`uid` = ? AND `uri` = ? AND `network` IN (?, ?)",
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$importer["uid"], $item["uri"], Protocol::FEED, Protocol::DFRN];
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$previous = Item::selectFirst(['id', 'created'], $condition);
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if (DBA::isResult($previous)) {
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// Use the creation date when the post had been stored. It can happen this date changes in the feed.
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$creation_dates[] = $previous['created'];
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Logger::info("Item with uri " . $item["uri"] . " for user " . $importer["uid"] . " already existed under id " . $previous["id"]);
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continue;
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}
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$creation_dates[] = DateTimeFormat::utc($item['created']);
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}
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$creator = XML::getFirstNodeValue($xpath, 'author/text()', $entry);
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if (empty($creator)) {
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$creator = XML::getFirstNodeValue($xpath, 'atom:author/atom:name/text()', $entry);
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}
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if (empty($creator)) {
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$creator = XML::getFirstNodeValue($xpath, 'dc:creator/text()', $entry);
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}
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if ($creator != "") {
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$item["author-name"] = $creator;
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}
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$creator = XML::getFirstNodeValue($xpath, 'dc:creator/text()', $entry);
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if ($creator != "") {
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$item["author-name"] = $creator;
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}
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/// @TODO ?
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// <category>Ausland</category>
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// <media:thumbnail width="152" height="76" url="http://www.taz.de/picture/667875/192/14388767.jpg"/>
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$attachments = [];
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$enclosures = $xpath->query("enclosure|atom:link[@rel='enclosure']", $entry);
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foreach ($enclosures AS $enclosure) {
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$href = "";
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$length = "";
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$type = "";
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foreach ($enclosure->attributes AS $attribute) {
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if (in_array($attribute->name, ["url", "href"])) {
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$href = $attribute->textContent;
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} elseif ($attribute->name == "length") {
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$length = $attribute->textContent;
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} elseif ($attribute->name == "type") {
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$type = $attribute->textContent;
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}
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}
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if (!empty($item["attach"])) {
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$item["attach"] .= ',';
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} else {
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$item["attach"] = '';
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}
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$attachments[] = ["link" => $href, "type" => $type, "length" => $length];
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$item["attach"] .= '[attach]href="' . $href . '" length="' . $length . '" type="' . $type . '"[/attach]';
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}
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$taglist = [];
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$categories = $xpath->query("category", $entry);
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foreach ($categories AS $category) {
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$taglist[] = $category->nodeValue;
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}
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$body = trim(XML::getFirstNodeValue($xpath, 'atom:content/text()', $entry));
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if (empty($body)) {
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$body = trim(XML::getFirstNodeValue($xpath, 'content:encoded/text()', $entry));
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}
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$summary = trim(XML::getFirstNodeValue($xpath, 'atom:summary/text()', $entry));
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if (empty($summary)) {
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$summary = trim(XML::getFirstNodeValue($xpath, 'description/text()', $entry));
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}
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if (empty($body)) {
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$body = $summary;
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$summary = '';
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}
|
|
|
|
if ($body == $summary) {
|
|
$summary = '';
|
|
}
|
|
|
|
// remove the content of the title if it is identically to the body
|
|
// This helps with auto generated titles e.g. from tumblr
|
|
if (self::titleIsBody($item["title"], $body)) {
|
|
$item["title"] = "";
|
|
}
|
|
$item["body"] = HTML::toBBCode($body, $basepath);
|
|
|
|
if (($item["body"] == '') && ($item["title"] != '')) {
|
|
$item["body"] = $item["title"];
|
|
$item["title"] = '';
|
|
}
|
|
|
|
if ($dryRun) {
|
|
$items[] = $item;
|
|
break;
|
|
} elseif (!Item::isValid($item)) {
|
|
Logger::info('Feed is invalid', ['created' => $item['created'], 'uid' => $item['uid'], 'uri' => $item['uri']]);
|
|
continue;
|
|
}
|
|
|
|
$preview = '';
|
|
if (!empty($contact["fetch_further_information"]) && ($contact["fetch_further_information"] < 3)) {
|
|
// Handle enclosures and treat them as preview picture
|
|
foreach ($attachments AS $attachment) {
|
|
if ($attachment["type"] == "image/jpeg") {
|
|
$preview = $attachment["link"];
|
|
}
|
|
}
|
|
|
|
// Remove a possible link to the item itself
|
|
$item["body"] = str_replace($item["plink"], '', $item["body"]);
|
|
$item["body"] = trim(preg_replace('/\[url\=\](\w+.*?)\[\/url\]/i', '', $item["body"]));
|
|
|
|
// Replace the content when the title is longer than the body
|
|
$replace = (strlen($item["title"]) > strlen($item["body"]));
|
|
|
|
// Replace it, when there is an image in the body
|
|
if (strstr($item["body"], '[/img]')) {
|
|
$replace = true;
|
|
}
|
|
|
|
// Replace it, when there is a link in the body
|
|
if (strstr($item["body"], '[/url]')) {
|
|
$replace = true;
|
|
}
|
|
|
|
$saved_body = $item["body"];
|
|
$saved_title = $item["title"];
|
|
|
|
if ($replace) {
|
|
$item["body"] = trim($item["title"]);
|
|
}
|
|
|
|
$data = ParseUrl::getSiteinfoCached($item['plink'], true);
|
|
if (!empty($data['text']) && !empty($data['title']) && (mb_strlen($item['body']) < mb_strlen($data['text']))) {
|
|
// When the fetched page info text is longer than the body, we do try to enhance the body
|
|
if (!empty($item['body']) && (strpos($data['title'], $item['body']) === false) && (strpos($data['text'], $item['body']) === false)) {
|
|
// The body is not part of the fetched page info title or page info text. So we add the text to the body
|
|
$item['body'] .= "\n\n" . $data['text'];
|
|
} else {
|
|
// Else we replace the body with the page info text
|
|
$item['body'] = $data['text'];
|
|
}
|
|
}
|
|
|
|
$data = PageInfo::queryUrl($item["plink"], false, $preview, ($contact["fetch_further_information"] == 2), $contact["ffi_keyword_denylist"] ?? '');
|
|
|
|
// Take the data that was provided by the feed if the query is empty
|
|
if (($data['type'] == 'link') && empty($data['title']) && empty($data['text'])) {
|
|
$data['title'] = $saved_title;
|
|
$item["body"] = $saved_body;
|
|
}
|
|
|
|
$data_text = strip_tags(trim($data['text'] ?? ''));
|
|
$item_body = strip_tags(trim($item['body'] ?? ''));
|
|
|
|
if (!empty($data_text) && (($data_text == $item_body) || strstr($item_body, $data_text))) {
|
|
$data['text'] = '';
|
|
}
|
|
|
|
// We always strip the title since it will be added in the page information
|
|
$item["title"] = "";
|
|
$item["body"] = $item["body"] . "\n" . PageInfo::getFooterFromData($data, false);
|
|
$taglist = $contact["fetch_further_information"] == 2 ? PageInfo::getTagsFromUrl($item["plink"], $preview, $contact["ffi_keyword_denylist"] ?? '') : [];
|
|
$item["object-type"] = Activity\ObjectType::BOOKMARK;
|
|
unset($item["attach"]);
|
|
} else {
|
|
if (!empty($summary)) {
|
|
$item["body"] = '[abstract]' . HTML::toBBCode($summary, $basepath) . "[/abstract]\n" . $item["body"];
|
|
}
|
|
|
|
if (!empty($contact["fetch_further_information"]) && ($contact["fetch_further_information"] == 3)) {
|
|
if (empty($taglist)) {
|
|
$taglist = PageInfo::getTagsFromUrl($item["plink"], $preview, $contact["ffi_keyword_denylist"] ?? '');
|
|
}
|
|
$item["body"] .= "\n" . self::tagToString($taglist);
|
|
} else {
|
|
$taglist = [];
|
|
}
|
|
|
|
// Add the link to the original feed entry if not present in feed
|
|
if (($item['plink'] != '') && !strstr($item["body"], $item['plink'])) {
|
|
$item["body"] .= "[hr][url]" . $item['plink'] . "[/url]";
|
|
}
|
|
}
|
|
|
|
Logger::info('Stored feed', ['item' => $item]);
|
|
|
|
$notify = Item::isRemoteSelf($contact, $item);
|
|
|
|
// Distributed items should have a well formatted URI.
|
|
// Additionally we have to avoid conflicts with identical URI between imported feeds and these items.
|
|
if ($notify) {
|
|
$item['guid'] = Item::guidFromUri($orig_plink, DI::baseUrl()->getHostname());
|
|
unset($item['uri']);
|
|
unset($item['parent-uri']);
|
|
|
|
// Set the delivery priority for "remote self" to "medium"
|
|
$notify = PRIORITY_MEDIUM;
|
|
}
|
|
|
|
$id = Item::insert($item, $notify);
|
|
|
|
Logger::info("Feed for contact " . $contact["url"] . " stored under id " . $id);
|
|
|
|
if (!empty($id) && !empty($taglist)) {
|
|
$feeditem = Item::selectFirst(['uri-id'], ['id' => $id]);
|
|
foreach ($taglist as $tag) {
|
|
Tag::store($feeditem['uri-id'], Tag::HASHTAG, $tag);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!$dryRun && DI::config()->get('system', 'adjust_poll_frequency')) {
|
|
self::adjustPollFrequency($contact, $creation_dates);
|
|
}
|
|
|
|
return ["header" => $author, "items" => $items];
|
|
}
|
|
|
|
/**
|
|
* Automatically adjust the poll frequency according to the post frequency
|
|
*
|
|
* @param array $contact
|
|
* @param array $creation_dates
|
|
* @return void
|
|
*/
|
|
private static function adjustPollFrequency(array $contact, array $creation_dates)
|
|
{
|
|
if ($contact['network'] != Protocol::FEED) {
|
|
Logger::info('Contact is no feed, skip.', ['id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url'], 'network' => $contact['network']]);
|
|
return;
|
|
}
|
|
|
|
if (!empty($creation_dates)) {
|
|
// Count the post frequency and the earliest and latest post date
|
|
$frequency = [];
|
|
$oldest = time();
|
|
$newest = 0;
|
|
$oldest_date = $newest_date = '';
|
|
|
|
foreach ($creation_dates as $date) {
|
|
$timestamp = strtotime($date);
|
|
$day = intdiv($timestamp, 86400);
|
|
$hour = $timestamp % 86400;
|
|
|
|
// Only have a look at values from the last seven days
|
|
if (((time() / 86400) - $day) < 7) {
|
|
if (empty($frequency[$day])) {
|
|
$frequency[$day] = ['count' => 1, 'low' => $hour, 'high' => $hour];
|
|
} else {
|
|
++$frequency[$day]['count'];
|
|
if ($frequency[$day]['low'] > $hour) {
|
|
$frequency[$day]['low'] = $hour;
|
|
}
|
|
if ($frequency[$day]['high'] < $hour) {
|
|
$frequency[$day]['high'] = $hour;
|
|
}
|
|
}
|
|
}
|
|
if ($oldest > $day) {
|
|
$oldest = $day;
|
|
$oldest_date = $date;
|
|
}
|
|
|
|
if ($newest < $day) {
|
|
$newest = $day;
|
|
$newest_date = $date;
|
|
}
|
|
}
|
|
|
|
if (count($creation_dates) == 1) {
|
|
Logger::info('Feed had posted a single time, switching to daily polling', ['newest' => $newest_date, 'id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url']]);
|
|
$priority = 8; // Poll once a day
|
|
}
|
|
|
|
if (empty($priority) && (((time() / 86400) - $newest) > 730)) {
|
|
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']]);
|
|
$priority = 10; // Poll every month
|
|
}
|
|
|
|
if (empty($priority) && (((time() / 86400) - $newest) > 365)) {
|
|
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']]);
|
|
$priority = 9; // Poll every week
|
|
}
|
|
|
|
if (empty($priority) && empty($frequency)) {
|
|
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']]);
|
|
$priority = 8; // Poll once a day
|
|
}
|
|
|
|
if (empty($priority)) {
|
|
// Calculate the highest "posts per day" value
|
|
$max = 0;
|
|
foreach ($frequency as $entry) {
|
|
if (($entry['count'] == 1) || ($entry['high'] == $entry['low'])) {
|
|
continue;
|
|
}
|
|
|
|
// We take the earliest and latest post day and interpolate the number of post per day
|
|
// that would had been created with this post frequency
|
|
|
|
// Assume at least four hours between oldest and newest post per day - should be okay for news outlets
|
|
$duration = max($entry['high'] - $entry['low'], 14400);
|
|
$ppd = (86400 / $duration) * $entry['count'];
|
|
if ($ppd > $max) {
|
|
$max = $ppd;
|
|
}
|
|
}
|
|
if ($max > 48) {
|
|
$priority = 1; // Poll every quarter hour
|
|
} elseif ($max > 24) {
|
|
$priority = 2; // Poll half an hour
|
|
} elseif ($max > 12) {
|
|
$priority = 3; // Poll hourly
|
|
} elseif ($max > 8) {
|
|
$priority = 4; // Poll every two hours
|
|
} elseif ($max > 4) {
|
|
$priority = 5; // Poll every three hours
|
|
} elseif ($max > 2) {
|
|
$priority = 6; // Poll every six hours
|
|
} else {
|
|
$priority = 7; // Poll twice a day
|
|
}
|
|
Logger::info('Calculated priority by the posts per day', ['priority' => $priority, 'max' => round($max, 2), 'id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url']]);
|
|
}
|
|
} else {
|
|
Logger::info('No posts, switching to daily polling', ['id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url']]);
|
|
$priority = 8; // Poll once a day
|
|
}
|
|
|
|
if ($contact['rating'] != $priority) {
|
|
Logger::notice('Adjusting priority', ['old' => $contact['rating'], 'new' => $priority, 'id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url']]);
|
|
DBA::update('contact', ['rating' => $priority], ['id' => $contact['id']]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Convert a tag array to a tag string
|
|
*
|
|
* @param array $tags
|
|
* @return string tag string
|
|
*/
|
|
private static function tagToString(array $tags)
|
|
{
|
|
$tagstr = '';
|
|
|
|
foreach ($tags as $tag) {
|
|
if ($tagstr != "") {
|
|
$tagstr .= ", ";
|
|
}
|
|
|
|
$tagstr .= "#[url=" . DI::baseUrl() . "/search?tag=" . urlencode($tag) . "]" . $tag . "[/url]";
|
|
}
|
|
|
|
return $tagstr;
|
|
}
|
|
|
|
private static function titleIsBody($title, $body)
|
|
{
|
|
$title = strip_tags($title);
|
|
$title = trim($title);
|
|
$title = html_entity_decode($title, ENT_QUOTES, 'UTF-8');
|
|
$title = str_replace(["\n", "\r", "\t", " "], ["", "", "", ""], $title);
|
|
|
|
$body = strip_tags($body);
|
|
$body = trim($body);
|
|
$body = html_entity_decode($body, ENT_QUOTES, 'UTF-8');
|
|
$body = str_replace(["\n", "\r", "\t", " "], ["", "", "", ""], $body);
|
|
|
|
if (strlen($title) < strlen($body)) {
|
|
$body = substr($body, 0, strlen($title));
|
|
}
|
|
|
|
if (($title != $body) && (substr($title, -3) == "...")) {
|
|
$pos = strrpos($title, "...");
|
|
if ($pos > 0) {
|
|
$title = substr($title, 0, $pos);
|
|
$body = substr($body, 0, $pos);
|
|
}
|
|
}
|
|
return ($title == $body);
|
|
}
|
|
|
|
/**
|
|
* Creates the Atom feed for a given nickname
|
|
*
|
|
* Supported filters:
|
|
* - activity (default): all the public posts
|
|
* - posts: all the public top-level posts
|
|
* - comments: all the public replies
|
|
*
|
|
* Updates the provided last_update parameter if the result comes from the
|
|
* cache or it is empty
|
|
*
|
|
* @param string $owner_nick Nickname of the feed owner
|
|
* @param string $last_update Date of the last update
|
|
* @param integer $max_items Number of maximum items to fetch
|
|
* @param string $filter Feed items filter (activity, posts or comments)
|
|
* @param boolean $nocache Wether to bypass caching
|
|
*
|
|
* @return string Atom feed
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
* @throws \ImagickException
|
|
*/
|
|
public static function atom($owner_nick, $last_update, $max_items = 300, $filter = 'activity', $nocache = false)
|
|
{
|
|
$stamp = microtime(true);
|
|
|
|
$owner = User::getOwnerDataByNick($owner_nick);
|
|
if (!$owner) {
|
|
return;
|
|
}
|
|
|
|
$cachekey = "feed:feed:" . $owner_nick . ":" . $filter . ":" . $last_update;
|
|
|
|
$previous_created = $last_update;
|
|
|
|
// Don't cache when the last item was posted less then 15 minutes ago (Cache duration)
|
|
if ((time() - strtotime($owner['last-item'])) < 15*60) {
|
|
$result = DI::cache()->get($cachekey);
|
|
if (!$nocache && !is_null($result)) {
|
|
Logger::info('Cached feed duration', ['seconds' => number_format(microtime(true) - $stamp, 3), 'nick' => $owner_nick, 'filter' => $filter, 'created' => $previous_created]);
|
|
return $result['feed'];
|
|
}
|
|
}
|
|
|
|
$check_date = empty($last_update) ? '' : DateTimeFormat::utc($last_update);
|
|
$authorid = Contact::getIdForURL($owner["url"]);
|
|
|
|
$condition = ["`uid` = ? AND `received` > ? AND NOT `deleted` AND `gravity` IN (?, ?)
|
|
AND `private` != ? AND `visible` AND `wall` AND `parent-network` IN (?, ?, ?, ?)",
|
|
$owner["uid"], $check_date, GRAVITY_PARENT, GRAVITY_COMMENT,
|
|
Item::PRIVATE, Protocol::ACTIVITYPUB,
|
|
Protocol::OSTATUS, Protocol::DFRN, Protocol::DIASPORA];
|
|
|
|
if ($filter === 'comments') {
|
|
$condition[0] .= " AND `object-type` = ? ";
|
|
$condition[] = Activity\ObjectType::COMMENT;
|
|
}
|
|
|
|
if ($owner['account-type'] != User::ACCOUNT_TYPE_COMMUNITY) {
|
|
$condition[0] .= " AND `contact-id` = ? AND `author-id` = ?";
|
|
$condition[] = $owner["id"];
|
|
$condition[] = $authorid;
|
|
}
|
|
|
|
$params = ['order' => ['received' => true], 'limit' => $max_items];
|
|
|
|
if ($filter === 'posts') {
|
|
$ret = Item::selectThread([], $condition, $params);
|
|
} else {
|
|
$ret = Item::select([], $condition, $params);
|
|
}
|
|
|
|
$items = Item::inArray($ret);
|
|
|
|
$doc = new DOMDocument('1.0', 'utf-8');
|
|
$doc->formatOutput = true;
|
|
|
|
$root = self::addHeader($doc, $owner, $filter);
|
|
|
|
foreach ($items as $item) {
|
|
$entry = self::entry($doc, $item, $owner);
|
|
$root->appendChild($entry);
|
|
|
|
if ($last_update < $item['created']) {
|
|
$last_update = $item['created'];
|
|
}
|
|
}
|
|
|
|
$feeddata = trim($doc->saveXML());
|
|
|
|
$msg = ['feed' => $feeddata, 'last_update' => $last_update];
|
|
DI::cache()->set($cachekey, $msg, Duration::QUARTER_HOUR);
|
|
|
|
Logger::info('Feed duration', ['seconds' => number_format(microtime(true) - $stamp, 3), 'nick' => $owner_nick, 'filter' => $filter, 'created' => $previous_created]);
|
|
|
|
return $feeddata;
|
|
}
|
|
|
|
/**
|
|
* Adds the header elements to the XML document
|
|
*
|
|
* @param DOMDocument $doc XML document
|
|
* @param array $owner Contact data of the poster
|
|
* @param string $filter The related feed filter (activity, posts or comments)
|
|
*
|
|
* @return object header root element
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
*/
|
|
private static function addHeader(DOMDocument $doc, array $owner, $filter)
|
|
{
|
|
$root = $doc->createElementNS(ActivityNamespace::ATOM1, 'feed');
|
|
$doc->appendChild($root);
|
|
|
|
$title = '';
|
|
$selfUri = '/feed/' . $owner["nick"] . '/';
|
|
switch ($filter) {
|
|
case 'activity':
|
|
$title = DI::l10n()->t('%s\'s timeline', $owner['name']);
|
|
$selfUri .= $filter;
|
|
break;
|
|
case 'posts':
|
|
$title = DI::l10n()->t('%s\'s posts', $owner['name']);
|
|
break;
|
|
case 'comments':
|
|
$title = DI::l10n()->t('%s\'s comments', $owner['name']);
|
|
$selfUri .= $filter;
|
|
break;
|
|
}
|
|
|
|
$attributes = ["uri" => "https://friendi.ca", "version" => FRIENDICA_VERSION . "-" . DB_UPDATE_VERSION];
|
|
XML::addElement($doc, $root, "generator", FRIENDICA_PLATFORM, $attributes);
|
|
XML::addElement($doc, $root, "id", DI::baseUrl() . "/profile/" . $owner["nick"]);
|
|
XML::addElement($doc, $root, "title", $title);
|
|
XML::addElement($doc, $root, "subtitle", sprintf("Updates from %s on %s", $owner["name"], DI::config()->get('config', 'sitename')));
|
|
XML::addElement($doc, $root, "logo", $owner["photo"]);
|
|
XML::addElement($doc, $root, "updated", DateTimeFormat::utcNow(DateTimeFormat::ATOM));
|
|
|
|
$author = self::addAuthor($doc, $owner);
|
|
$root->appendChild($author);
|
|
|
|
$attributes = ["href" => $owner["url"], "rel" => "alternate", "type" => "text/html"];
|
|
XML::addElement($doc, $root, "link", "", $attributes);
|
|
|
|
OStatus::hublinks($doc, $root, $owner["nick"]);
|
|
|
|
$attributes = ["href" => DI::baseUrl() . $selfUri, "rel" => "self", "type" => "application/atom+xml"];
|
|
XML::addElement($doc, $root, "link", "", $attributes);
|
|
|
|
return $root;
|
|
}
|
|
|
|
/**
|
|
* Adds the author element to the XML document
|
|
*
|
|
* @param DOMDocument $doc XML document
|
|
* @param array $owner Contact data of the poster
|
|
*
|
|
* @return \DOMElement author element
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
*/
|
|
private static function addAuthor(DOMDocument $doc, array $owner)
|
|
{
|
|
$author = $doc->createElement("author");
|
|
XML::addElement($doc, $author, "uri", $owner["url"]);
|
|
XML::addElement($doc, $author, "name", $owner["nick"]);
|
|
XML::addElement($doc, $author, "email", $owner["addr"]);
|
|
|
|
return $author;
|
|
}
|
|
|
|
/**
|
|
* Adds an entry element to the XML document
|
|
*
|
|
* @param DOMDocument $doc XML document
|
|
* @param array $item Data of the item that is to be posted
|
|
* @param array $owner Contact data of the poster
|
|
* @param bool $toplevel optional default false
|
|
*
|
|
* @return \DOMElement Entry element
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
* @throws \ImagickException
|
|
*/
|
|
private static function entry(DOMDocument $doc, array $item, array $owner)
|
|
{
|
|
$xml = null;
|
|
|
|
$repeated_guid = OStatus::getResharedGuid($item);
|
|
if ($repeated_guid != "") {
|
|
$xml = self::reshareEntry($doc, $item, $owner, $repeated_guid);
|
|
}
|
|
|
|
if ($xml) {
|
|
return $xml;
|
|
}
|
|
|
|
return self::noteEntry($doc, $item, $owner);
|
|
}
|
|
|
|
/**
|
|
* Adds an entry element with reshared content
|
|
*
|
|
* @param DOMDocument $doc XML document
|
|
* @param array $item Data of the item that is to be posted
|
|
* @param array $owner Contact data of the poster
|
|
* @param string $repeated_guid guid
|
|
* @param bool $toplevel Is it for en entry element (false) or a feed entry (true)?
|
|
*
|
|
* @return bool Entry element
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
* @throws \ImagickException
|
|
*/
|
|
private static function reshareEntry(DOMDocument $doc, array $item, array $owner, $repeated_guid)
|
|
{
|
|
if (($item['gravity'] != GRAVITY_PARENT) && (Strings::normaliseLink($item["author-link"]) != Strings::normaliseLink($owner["url"]))) {
|
|
Logger::info('Feed entry author does not match feed owner', ['owner' => $owner["url"], 'author' => $item["author-link"]]);
|
|
}
|
|
|
|
$entry = OStatus::entryHeader($doc, $owner, $item, false);
|
|
|
|
$condition = ['uid' => $owner["uid"], 'guid' => $repeated_guid, 'private' => [Item::PUBLIC, Item::UNLISTED],
|
|
'network' => Protocol::FEDERATED];
|
|
$repeated_item = Item::selectFirst([], $condition);
|
|
if (!DBA::isResult($repeated_item)) {
|
|
return false;
|
|
}
|
|
|
|
self::entryContent($doc, $entry, $item, self::getTitle($repeated_item), Activity::SHARE, false);
|
|
|
|
self::entryFooter($doc, $entry, $item, $owner);
|
|
|
|
return $entry;
|
|
}
|
|
|
|
/**
|
|
* Adds a regular entry element
|
|
*
|
|
* @param DOMDocument $doc XML document
|
|
* @param array $item Data of the item that is to be posted
|
|
* @param array $owner Contact data of the poster
|
|
* @param bool $toplevel Is it for en entry element (false) or a feed entry (true)?
|
|
*
|
|
* @return \DOMElement Entry element
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
* @throws \ImagickException
|
|
*/
|
|
private static function noteEntry(DOMDocument $doc, array $item, array $owner)
|
|
{
|
|
if (($item['gravity'] != GRAVITY_PARENT) && (Strings::normaliseLink($item["author-link"]) != Strings::normaliseLink($owner["url"]))) {
|
|
Logger::info('Feed entry author does not match feed owner', ['owner' => $owner["url"], 'author' => $item["author-link"]]);
|
|
}
|
|
|
|
$entry = OStatus::entryHeader($doc, $owner, $item, false);
|
|
|
|
self::entryContent($doc, $entry, $item, self::getTitle($item), '', true);
|
|
|
|
self::entryFooter($doc, $entry, $item, $owner);
|
|
|
|
return $entry;
|
|
}
|
|
|
|
/**
|
|
* Adds elements to the XML document
|
|
*
|
|
* @param DOMDocument $doc XML document
|
|
* @param \DOMElement $entry Entry element where the content is added
|
|
* @param array $item Data of the item that is to be posted
|
|
* @param array $owner Contact data of the poster
|
|
* @param string $title Title for the post
|
|
* @param string $verb The activity verb
|
|
* @param bool $complete Add the "status_net" element?
|
|
* @param bool $feed_mode Behave like a regular feed for users if true
|
|
* @return void
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
*/
|
|
private static function entryContent(DOMDocument $doc, \DOMElement $entry, array $item, $title, $verb = "", $complete = true)
|
|
{
|
|
if ($verb == "") {
|
|
$verb = OStatus::constructVerb($item);
|
|
}
|
|
|
|
XML::addElement($doc, $entry, "id", $item["uri"]);
|
|
XML::addElement($doc, $entry, "title", html_entity_decode($title, ENT_QUOTES, 'UTF-8'));
|
|
|
|
$body = OStatus::formatPicturePost($item['body']);
|
|
|
|
$body = BBCode::convert($body, false, BBCode::OSTATUS);
|
|
|
|
XML::addElement($doc, $entry, "content", $body, ["type" => "html"]);
|
|
|
|
XML::addElement($doc, $entry, "link", "", ["rel" => "alternate", "type" => "text/html",
|
|
"href" => DI::baseUrl()."/display/".$item["guid"]]
|
|
);
|
|
|
|
XML::addElement($doc, $entry, "published", DateTimeFormat::utc($item["created"]."+00:00", DateTimeFormat::ATOM));
|
|
XML::addElement($doc, $entry, "updated", DateTimeFormat::utc($item["edited"]."+00:00", DateTimeFormat::ATOM));
|
|
}
|
|
|
|
/**
|
|
* Adds the elements at the foot of an entry to the XML document
|
|
*
|
|
* @param DOMDocument $doc XML document
|
|
* @param object $entry The entry element where the elements are added
|
|
* @param array $item Data of the item that is to be posted
|
|
* @param array $owner Contact data of the poster
|
|
* @param bool $complete default true
|
|
* @return void
|
|
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
|
|
*/
|
|
private static function entryFooter(DOMDocument $doc, $entry, array $item, array $owner)
|
|
{
|
|
$mentioned = [];
|
|
|
|
if ($item['gravity'] != GRAVITY_PARENT) {
|
|
$parent = Item::selectFirst(['guid', 'author-link', 'owner-link'], ['id' => $item['parent']]);
|
|
$parent_item = (($item['thr-parent']) ? $item['thr-parent'] : $item['parent-uri']);
|
|
|
|
$thrparent = Item::selectFirst(['guid', 'author-link', 'owner-link', 'plink'], ['uid' => $owner["uid"], 'uri' => $parent_item]);
|
|
|
|
if (DBA::isResult($thrparent)) {
|
|
$mentioned[$thrparent["author-link"]] = $thrparent["author-link"];
|
|
$mentioned[$thrparent["owner-link"]] = $thrparent["owner-link"];
|
|
$parent_plink = $thrparent["plink"];
|
|
} else {
|
|
$mentioned[$parent["author-link"]] = $parent["author-link"];
|
|
$mentioned[$parent["owner-link"]] = $parent["owner-link"];
|
|
$parent_plink = DI::baseUrl()."/display/".$parent["guid"];
|
|
}
|
|
|
|
$attributes = [
|
|
"ref" => $parent_item,
|
|
"href" => $parent_plink];
|
|
XML::addElement($doc, $entry, "thr:in-reply-to", "", $attributes);
|
|
|
|
$attributes = [
|
|
"rel" => "related",
|
|
"href" => $parent_plink];
|
|
XML::addElement($doc, $entry, "link", "", $attributes);
|
|
}
|
|
|
|
// uri-id isn't present for follow entry pseudo-items
|
|
$tags = Tag::getByURIId($item['uri-id'] ?? 0);
|
|
foreach ($tags as $tag) {
|
|
$mentioned[$tag['url']] = $tag['url'];
|
|
}
|
|
|
|
foreach ($tags as $tag) {
|
|
if ($tag['type'] == Tag::HASHTAG) {
|
|
XML::addElement($doc, $entry, "category", "", ["term" => $tag['name']]);
|
|
}
|
|
}
|
|
|
|
OStatus::getAttachment($doc, $entry, $item);
|
|
}
|
|
|
|
/**
|
|
* Fetch or create title for feed entry
|
|
*
|
|
* @param array $item
|
|
* @return string title
|
|
*/
|
|
private static function getTitle(array $item)
|
|
{
|
|
if ($item['title'] != '') {
|
|
return BBCode::convert($item['title'], false, BBCode::OSTATUS);
|
|
}
|
|
|
|
// Fetch information about the post
|
|
$siteinfo = BBCode::getAttachedData($item["body"]);
|
|
if (isset($siteinfo["title"])) {
|
|
return $siteinfo["title"];
|
|
}
|
|
|
|
// If no bookmark is found then take the first line
|
|
// Remove the share element before fetching the first line
|
|
$title = trim(preg_replace("/\[share.*?\](.*?)\[\/share\]/ism","\n$1\n",$item['body']));
|
|
|
|
$title = HTML::toPlaintext(BBCode::convert($title, false), 0, true)."\n";
|
|
$pos = strpos($title, "\n");
|
|
$trailer = "";
|
|
if (($pos == 0) || ($pos > 100)) {
|
|
$pos = 100;
|
|
$trailer = "...";
|
|
}
|
|
|
|
return substr($title, 0, $pos) . $trailer;
|
|
}
|
|
}
|