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New "relay" class / check of incoming popsts from DFRN and Diaspora

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Michael 2020-09-30 17:37:46 +00:00
parent 0b37f1d56c
commit e26d73393e
4 changed files with 195 additions and 82 deletions
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73
src/Protocol/ActivityPub/Processor.php
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@ -35,15 +35,14 @@ use Friendica\Model\Event;
use Friendica\Model\Item;
use Friendica\Model\ItemURI;
use Friendica\Model\Mail;
use Friendica\Model\Search;
use Friendica\Model\Tag;
use Friendica\Model\User;
use Friendica\Protocol\Activity;
use Friendica\Protocol\ActivityPub;
use Friendica\Protocol\Relay;
use Friendica\Util\DateTimeFormat;
use Friendica\Util\JsonLD;
use Friendica\Util\Strings;
use Text_LanguageDetect;
/**
* ActivityPub Processor Protocol class
@ -801,25 +800,13 @@ class Processor
return true;
}
$config = DI::config();
$subscribe = $config->get('system', 'relay_subscribe', false);
if ($subscribe) {
$scope = $config->get('system', 'relay_scope', SR_SCOPE_ALL);
} else {
$scope = SR_SCOPE_NONE;
}
$replyto = JsonLD::fetchElement($activity['as:object'], 'as:inReplyTo', '@id');
if (Item::exists(['uri' => $replyto])) {
Logger::info('Post is a reply to an existing post - accepted', ['id' => $id, 'replyto' => $replyto]);
return true;
}
if ($scope == SR_SCOPE_NONE) {
Logger::info('Server does not accept relay posts - rejected', ['id' => $id]);
return false;
}
$body = HTML::toBBCode(JsonLD::fetchElement($activity['as:object'], 'as:content', '@value'));
$messageTags = [];
$tags = Receiver::processTags(JsonLD::fetchElementArray($activity['as:object'], 'as:tag') ?? []);
@ -832,61 +819,7 @@ class Processor
}
}
$systemTags = [];
$userTags = [];
$denyTags = [];
if ($scope == SR_SCOPE_TAGS) {
$server_tags = $config->get('system', 'relay_server_tags');
$tagitems = explode(',', mb_strtolower($server_tags));
foreach ($tagitems AS $tag) {
$systemTags[] = trim($tag, '# ');
}
if ($config->get('system', 'relay_user_tags')) {
$userTags = Search::getUserTags();
}
}
$tagList = array_unique(array_merge($systemTags, $userTags));
$deny_tags = $config->get('system', 'relay_deny_tags');
$tagitems = explode(',', mb_strtolower($deny_tags));
foreach ($tagitems AS $tag) {
$tag = trim($tag, '# ');
$denyTags[] = $tag;
}
if (!empty($tagList) || !empty($denyTags)) {
$content = mb_strtolower(BBCode::toPlaintext(HTML::toBBCode(JsonLD::fetchElement($activity['as:object'], 'as:content', '@value')), false));
foreach ($messageTags as $tag) {
if (in_array($tag, $denyTags)) {
Logger::info('Unwanted hashtag found - rejected', ['id' => $id, 'hashtag' => $tag]);
return false;
}
if (in_array($tag, $tagList)) {
Logger::info('Subscribed hashtag found - accepted', ['id' => $id, 'hashtag' => $tag]);
return true;
}
// We check with "strpos" for performance issues. Only when this is true, the regular expression check is used
// RegExp is taken from here: https://medium.com/@shiba1014/regex-word-boundaries-with-unicode-207794f6e7ed
if ((strpos($content, $tag) !== false) && preg_match('/(?<=[\s,.:;"\']|^)' . preg_quote($tag, '/') . '(?=[\s,.:;"\']|$)/', $content)) {
Logger::info('Subscribed hashtag found in content - accepted', ['id' => $id, 'hashtag' => $tag]);
return true;
}
}
}
if ($scope == SR_SCOPE_ALL) {
Logger::info('Server accept all posts - accepted', ['id' => $id]);
return true;
}
Logger::info('No matching hashtags found - rejected', ['id' => $id]);
return false;
return Relay::isSolicitedPost($messageTags, $body, $id, Protocol::ACTIVITYPUB);
}
/**