1182 lines
32 KiB
PHP
1182 lines
32 KiB
PHP
<?php
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/**
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* @file src/Protocol/ActivityPub.php
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*/
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namespace Friendica\Protocol;
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use Friendica\Database\DBA;
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use Friendica\Core\System;
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use Friendica\BaseObject;
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use Friendica\Util\Network;
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use Friendica\Util\HTTPSignature;
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use Friendica\Core\Protocol;
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use Friendica\Model\Conversation;
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use Friendica\Model\Contact;
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use Friendica\Model\Item;
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use Friendica\Model\User;
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use Friendica\Util\DateTimeFormat;
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use Friendica\Util\Crypto;
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use Friendica\Content\Text\BBCode;
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use Friendica\Content\Text\HTML;
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use Friendica\Network\Probe;
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/**
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* @brief ActivityPub Protocol class
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* The ActivityPub Protocol is a message exchange protocol defined by the W3C.
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* https://www.w3.org/TR/activitypub/
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* https://www.w3.org/TR/activitystreams-core/
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* https://www.w3.org/TR/activitystreams-vocabulary/
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*
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* https://blog.joinmastodon.org/2018/06/how-to-implement-a-basic-activitypub-server/
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* https://blog.joinmastodon.org/2018/07/how-to-make-friends-and-verify-requests/
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*
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* Digest: https://tools.ietf.org/html/rfc5843
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* https://tools.ietf.org/html/draft-cavage-http-signatures-10#ref-15
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*
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* Part of the code for HTTP signing is taken from the Osada project.
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*
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*
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* To-do:
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*
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* Receiver:
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* - Activities: Undo, Update
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* - Object Types: Person, Tombstome
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*
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* Transmitter:
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* - Activities: Like, Dislike, Update, Undo
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* - Object Tyoes: Article, Announce, Person, Tombstone
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*
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* General:
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* - Message distribution
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* - Endpoints: Outbox, Object, Follower, Following
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*/
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class ActivityPub
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{
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const PUBLIC = 'https://www.w3.org/ns/activitystreams#Public';
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public static function transmit($data, $target, $uid)
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{
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$owner = User::getOwnerDataById($uid);
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if (!$owner) {
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return;
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}
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$content = json_encode($data);
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$host = parse_url($target, PHP_URL_HOST);
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$path = parse_url($target, PHP_URL_PATH);
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$date = date('r');
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$headers = ['Host: ' . $host, 'Date: ' . $date];
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$signed_data = "(request-target): post " . $path . "\nhost: " . $host . "\ndate: " . $date;
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$signature = base64_encode(Crypto::rsaSign($signed_data, $owner['uprvkey'], 'sha256'));
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$headers[] = 'Signature: keyId="' . $owner['url'] . '#main-key' . '",headers="(request-target) host date",signature="' . $signature . '"';
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$headers[] = 'Content-Type: application/activity+json';
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Network::post($target, $content, $headers);
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$return_code = BaseObject::getApp()->get_curl_code();
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logger('Transmit to ' . $target . ' returned ' . $return_code);
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}
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/**
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* Return the ActivityPub profile of the given user
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*
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* @param integer $uid User ID
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* @return array
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*/
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public static function profile($uid)
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{
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$accounttype = ['Person', 'Organization', 'Service', 'Group', 'Application'];
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$condition = ['uid' => $uid, 'blocked' => false, 'account_expired' => false,
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'account_removed' => false, 'verified' => true];
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$fields = ['guid', 'nickname', 'pubkey', 'account-type'];
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$user = DBA::selectFirst('user', $fields, $condition);
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if (!DBA::isResult($user)) {
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return [];
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}
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$fields = ['locality', 'region', 'country-name'];
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$profile = DBA::selectFirst('profile', $fields, ['uid' => $uid, 'is-default' => true]);
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if (!DBA::isResult($profile)) {
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return [];
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}
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$fields = ['name', 'url', 'location', 'about', 'avatar'];
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$contact = DBA::selectFirst('contact', $fields, ['uid' => $uid, 'self' => true]);
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if (!DBA::isResult($contact)) {
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return [];
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}
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$data = ['@context' => ['https://www.w3.org/ns/activitystreams', 'https://w3id.org/security/v1',
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['uuid' => 'http://schema.org/identifier', 'sensitive' => 'as:sensitive',
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'vcard' => 'http://www.w3.org/2006/vcard/ns#']]];
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$data['id'] = $contact['url'];
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$data['uuid'] = $user['guid'];
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$data['type'] = $accounttype[$user['account-type']];
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$data['following'] = System::baseUrl() . '/following/' . $user['nickname'];
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$data['followers'] = System::baseUrl() . '/followers/' . $user['nickname'];
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$data['inbox'] = System::baseUrl() . '/inbox/' . $user['nickname'];
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$data['outbox'] = System::baseUrl() . '/outbox/' . $user['nickname'];
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$data['preferredUsername'] = $user['nickname'];
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$data['name'] = $contact['name'];
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$data['vcard:hasAddress'] = ['@type' => 'Home', 'vcard:country-name' => $profile['country-name'],
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'vcard:region' => $profile['region'], 'vcard:locality' => $profile['locality']];
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$data['summary'] = $contact['about'];
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$data['url'] = $contact['url'];
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$data['manuallyApprovesFollowers'] = false;
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$data['publicKey'] = ['id' => $contact['url'] . '#main-key',
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'owner' => $contact['url'],
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'publicKeyPem' => $user['pubkey']];
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$data['endpoints'] = ['sharedInbox' => System::baseUrl() . '/inbox'];
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$data['icon'] = ['type' => 'Image',
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'url' => $contact['avatar']];
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// tags: https://kitty.town/@inmysocks/100656097926961126.json
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return $data;
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}
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public static function createActivityFromItem($item_id)
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{
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$item = Item::selectFirst([], ['id' => $item_id]);
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$data = ['@context' => ['https://www.w3.org/ns/activitystreams', 'https://w3id.org/security/v1',
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['Emoji' => 'toot:Emoji', 'Hashtag' => 'as:Hashtag', 'atomUri' => 'ostatus:atomUri',
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'conversation' => 'ostatus:conversation', 'inReplyToAtomUri' => 'ostatus:inReplyToAtomUri',
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'ostatus' => 'http://ostatus.org#', 'sensitive' => 'as:sensitive',
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'toot' => 'http://joinmastodon.org/ns#']]];
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$data['type'] = 'Create';
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$data['id'] = $item['uri'];
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$data['actor'] = $item['author-link'];
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$data['to'] = 'https://www.w3.org/ns/activitystreams#Public';
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$data['object'] = self::createNote($item);
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return $data;
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}
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public static function createNote($item)
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{
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$data = [];
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$data['type'] = 'Note';
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$data['id'] = $item['uri'];
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if ($item['uri'] != $item['thr-parent']) {
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$data['inReplyTo'] = $item['thr-parent'];
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}
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$conversation = DBA::selectFirst('conversation', ['conversation-uri'], ['item-uri' => $item['parent-uri']]);
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if (DBA::isResult($conversation) && !empty($conversation['conversation-uri'])) {
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$conversation_uri = $conversation['conversation-uri'];
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} else {
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$conversation_uri = $item['parent-uri'];
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}
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$data['context'] = $data['conversation'] = $conversation_uri;
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$data['actor'] = $item['author-link'];
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$data['to'] = [];
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if (!$item['private']) {
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$data['to'][] = 'https://www.w3.org/ns/activitystreams#Public';
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}
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$data['published'] = DateTimeFormat::utc($item["created"]."+00:00", DateTimeFormat::ATOM);
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$data['updated'] = DateTimeFormat::utc($item["edited"]."+00:00", DateTimeFormat::ATOM);
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$data['attributedTo'] = $item['author-link'];
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$data['name'] = BBCode::convert($item['title'], false, 7);
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$data['content'] = BBCode::convert($item['body'], false, 7);
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$data['source'] = ['content' => $item['body'], 'mediaType' => "text/bbcode"];
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//$data['summary'] = ''; // Ignore by now
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//$data['sensitive'] = false; // - Query NSFW
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//$data['emoji'] = []; // Ignore by now
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//$data['tag'] = []; /// @ToDo
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//$data['attachment'] = []; // @ToDo
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return $data;
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}
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public static function transmitActivity($activity, $target, $uid)
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{
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$profile = Probe::uri($target, Protocol::ACTIVITYPUB);
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$owner = User::getOwnerDataById($uid);
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$data = ['@context' => 'https://www.w3.org/ns/activitystreams',
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'id' => 'https://pirati.ca/activity/' . System::createGUID(),
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'type' => $activity,
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'actor' => $owner['url'],
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'object' => $profile['url']];
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logger('Sending activity ' . $activity . ' to ' . $target . ' for user ' . $uid, LOGGER_DEBUG);
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return self::transmit($data, $profile['notify'], $uid);
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}
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public static function transmitContactAccept($target, $id, $uid)
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{
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$profile = Probe::uri($target, Protocol::ACTIVITYPUB);
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$owner = User::getOwnerDataById($uid);
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$data = ['@context' => 'https://www.w3.org/ns/activitystreams',
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'id' => 'https://pirati.ca/activity/' . System::createGUID(),
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'type' => 'Accept',
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'actor' => $owner['url'],
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'object' => ['id' => $id, 'type' => 'Follow',
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'actor' => $profile['url'],
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'object' => $owner['url']]];
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logger('Sending accept to ' . $target . ' for user ' . $uid . ' with id ' . $id, LOGGER_DEBUG);
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return self::transmit($data, $profile['notify'], $uid);
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}
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public static function transmitContactUndo($target, $id, $uid)
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{
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$profile = Probe::uri($target, Protocol::ACTIVITYPUB);
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if (empty($id)) {
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$id = 'https://pirati.ca/activity/' . System::createGUID();
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}
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$owner = User::getOwnerDataById($uid);
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$data = ['@context' => 'https://www.w3.org/ns/activitystreams',
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'id' => 'https://pirati.ca/activity/' . System::createGUID(),
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'type' => 'Undo',
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'actor' => $owner['url'],
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'object' => ['id' => $id, 'type' => 'Follow',
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'actor' => $owner['url'],
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'object' => $profile['url']]];
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logger('Sending undo to ' . $target . ' for user ' . $uid . ' with id ' . $id, LOGGER_DEBUG);
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return self::transmit($data, $profile['notify'], $uid);
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}
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/**
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* Fetches ActivityPub content from the given url
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*
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* @param string $url content url
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* @return array
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*/
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public static function fetchContent($url)
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{
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$ret = Network::curl($url, false, $redirects, ['accept_content' => 'application/activity+json']);
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if (!$ret['success'] || empty($ret['body'])) {
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return;
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}
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return json_decode($ret['body'], true);
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}
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/**
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* Resolves the profile url from the address by using webfinger
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*
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* @param string $addr profile address (user@domain.tld)
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* @return string url
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*/
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private static function addrToUrl($addr)
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{
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$addr_parts = explode('@', $addr);
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if (count($addr_parts) != 2) {
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return false;
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}
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$webfinger = 'https://' . $addr_parts[1] . '/.well-known/webfinger?resource=acct:' . urlencode($addr);
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$ret = Network::curl($webfinger, false, $redirects, ['accept_content' => 'application/jrd+json,application/json']);
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if (!$ret['success'] || empty($ret['body'])) {
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return false;
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}
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$data = json_decode($ret['body'], true);
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if (empty($data['links'])) {
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return false;
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}
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foreach ($data['links'] as $link) {
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if (empty($link['href']) || empty($link['rel']) || empty($link['type'])) {
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continue;
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}
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if (($link['rel'] == 'self') && ($link['type'] == 'application/activity+json')) {
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return $link['href'];
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}
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}
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return false;
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}
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public static function verifySignature($content, $http_headers)
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{
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$object = json_decode($content, true);
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if (empty($object)) {
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return false;
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}
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$actor = self::processElement($object, 'actor', 'id');
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$headers = [];
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$headers['(request-target)'] = strtolower($http_headers['REQUEST_METHOD']) . ' ' . $http_headers['REQUEST_URI'];
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// First take every header
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foreach ($http_headers as $k => $v) {
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$field = str_replace('_', '-', strtolower($k));
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$headers[$field] = $v;
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}
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// Now add every http header
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foreach ($http_headers as $k => $v) {
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if (strpos($k, 'HTTP_') === 0) {
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$field = str_replace('_', '-', strtolower(substr($k, 5)));
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$headers[$field] = $v;
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}
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}
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$sig_block = ActivityPub::parseSigHeader($http_headers['HTTP_SIGNATURE']);
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if (empty($sig_block) || empty($sig_block['headers']) || empty($sig_block['keyId'])) {
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return false;
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}
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$signed_data = '';
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foreach ($sig_block['headers'] as $h) {
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if (array_key_exists($h, $headers)) {
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$signed_data .= $h . ': ' . $headers[$h] . "\n";
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}
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}
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$signed_data = rtrim($signed_data, "\n");
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if (empty($signed_data)) {
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return false;
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}
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$algorithm = null;
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if ($sig_block['algorithm'] === 'rsa-sha256') {
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$algorithm = 'sha256';
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}
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if ($sig_block['algorithm'] === 'rsa-sha512') {
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$algorithm = 'sha512';
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}
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if (empty($algorithm)) {
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return false;
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}
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$key = self::fetchKey($sig_block['keyId'], $actor);
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if (empty($key)) {
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return false;
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}
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if (!Crypto::rsaVerify($signed_data, $sig_block['signature'], $key, $algorithm)) {
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return false;
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}
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// Check the digest if it was part of the signed data
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if (in_array('digest', $sig_block['headers'])) {
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$digest = explode('=', $headers['digest'], 2);
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if ($digest[0] === 'SHA-256') {
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$hashalg = 'sha256';
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}
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if ($digest[0] === 'SHA-512') {
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$hashalg = 'sha512';
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}
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/// @todo add all hashes from the rfc
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if (!empty($hashalg) && base64_encode(hash($hashalg, $content, true)) != $digest[1]) {
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return false;
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}
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}
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// Check the content-length if it was part of the signed data
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if (in_array('content-length', $sig_block['headers'])) {
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if (strlen($content) != $headers['content-length']) {
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return false;
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}
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}
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return true;
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}
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private static function fetchKey($id, $actor)
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{
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$url = (strpos($id, '#') ? substr($id, 0, strpos($id, '#')) : $id);
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$profile = Probe::uri($url, Protocol::ACTIVITYPUB);
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if (!empty($profile)) {
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return $profile['pubkey'];
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} elseif ($url != $actor) {
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$profile = Probe::uri($actor, Protocol::ACTIVITYPUB);
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if (!empty($profile)) {
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return $profile['pubkey'];
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}
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}
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return false;
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}
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/**
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* @brief
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*
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* @param string $header
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* @return array associate array with
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* - \e string \b keyID
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* - \e string \b algorithm
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* - \e array \b headers
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* - \e string \b signature
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*/
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private static function parseSigHeader($header)
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{
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$ret = [];
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$matches = [];
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if (preg_match('/keyId="(.*?)"/ism',$header,$matches)) {
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$ret['keyId'] = $matches[1];
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}
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if (preg_match('/algorithm="(.*?)"/ism',$header,$matches)) {
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$ret['algorithm'] = $matches[1];
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}
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if (preg_match('/headers="(.*?)"/ism',$header,$matches)) {
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$ret['headers'] = explode(' ', $matches[1]);
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}
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if (preg_match('/signature="(.*?)"/ism',$header,$matches)) {
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$ret['signature'] = base64_decode(preg_replace('/\s+/','',$matches[1]));
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}
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return $ret;
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}
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/**
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* Fetches a profile from the given url
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*
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* @param string $url profile url
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* @return array
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*/
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public static function fetchProfile($url)
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{
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if (empty(parse_url($url, PHP_URL_SCHEME))) {
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$url = self::addrToUrl($url);
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if (empty($url)) {
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return false;
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}
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}
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$data = self::fetchContent($url);
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if (empty($data) || empty($data['id']) || empty($data['inbox'])) {
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return false;
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}
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$profile = ['network' => Protocol::ACTIVITYPUB];
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$profile['nick'] = $data['preferredUsername'];
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$profile['name'] = defaults($data, 'name', $profile['nick']);
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$profile['guid'] = defaults($data, 'uuid', null);
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$profile['url'] = $data['id'];
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$parts = parse_url($profile['url']);
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unset($parts['scheme']);
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unset($parts['path']);
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$profile['addr'] = $profile['nick'] . '@' . str_replace('//', '', Network::unparseURL($parts));
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$profile['alias'] = self::processElement($data, 'url', 'href');
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$profile['photo'] = self::processElement($data, 'icon', 'url');
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// $profile['community']
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// $profile['keywords']
|
|
// $profile['location']
|
|
$profile['about'] = defaults($data, 'summary', '');
|
|
$profile['batch'] = self::processElement($data, 'endpoints', 'sharedInbox');
|
|
$profile['notify'] = $data['inbox'];
|
|
$profile['poll'] = $data['outbox'];
|
|
$profile['pubkey'] = self::processElement($data, 'publicKey', 'publicKeyPem');
|
|
|
|
// Check if the address is resolvable
|
|
if (self::addrToUrl($profile['addr']) == $profile['url']) {
|
|
$parts = parse_url($profile['url']);
|
|
unset($parts['path']);
|
|
$profile['baseurl'] = Network::unparseURL($parts);
|
|
} else {
|
|
unset($profile['addr']);
|
|
}
|
|
|
|
if ($profile['url'] == $profile['alias']) {
|
|
unset($profile['alias']);
|
|
}
|
|
|
|
// Remove all "null" fields
|
|
foreach ($profile as $field => $content) {
|
|
if (is_null($content)) {
|
|
unset($profile[$field]);
|
|
}
|
|
}
|
|
|
|
/*
|
|
// To-Do
|
|
unset($data['type']);
|
|
unset($data['manuallyApprovesFollowers']);
|
|
|
|
// Unhandled
|
|
unset($data['@context']);
|
|
unset($data['tag']);
|
|
unset($data['attachment']);
|
|
unset($data['image']);
|
|
unset($data['nomadicLocations']);
|
|
unset($data['signature']);
|
|
unset($data['following']);
|
|
unset($data['followers']);
|
|
unset($data['featured']);
|
|
unset($data['movedTo']);
|
|
unset($data['liked']);
|
|
unset($data['sharedInbox']); // Misskey
|
|
unset($data['isCat']); // Misskey
|
|
unset($data['kroeg:blocks']); // Kroeg
|
|
unset($data['updated']); // Kroeg
|
|
*/
|
|
return $profile;
|
|
}
|
|
|
|
public static function processInbox($body, $header, $uid)
|
|
{
|
|
logger('Incoming message for user ' . $uid, LOGGER_DEBUG);
|
|
|
|
if (!self::verifySignature($body, $header)) {
|
|
logger('Invalid signature, message will be discarded.', LOGGER_DEBUG);
|
|
return;
|
|
}
|
|
|
|
$activity = json_decode($body, true);
|
|
|
|
if (!is_array($activity)) {
|
|
logger('Invalid body.', LOGGER_DEBUG);
|
|
return;
|
|
}
|
|
|
|
self::processActivity($activity, $body, $uid);
|
|
}
|
|
|
|
public static function fetchOutbox($url)
|
|
{
|
|
$data = self::fetchContent($url);
|
|
if (empty($data)) {
|
|
return;
|
|
}
|
|
|
|
if (!empty($data['orderedItems'])) {
|
|
$items = $data['orderedItems'];
|
|
} elseif (!empty($data['first']['orderedItems'])) {
|
|
$items = $data['first']['orderedItems'];
|
|
} elseif (!empty($data['first'])) {
|
|
self::fetchOutbox($data['first']);
|
|
return;
|
|
} else {
|
|
$items = [];
|
|
}
|
|
|
|
foreach ($items as $activity) {
|
|
self::processActivity($activity);
|
|
}
|
|
}
|
|
|
|
function processActivity($activity, $body = '', $uid = null)
|
|
{
|
|
if (empty($activity['type'])) {
|
|
logger('Empty type', LOGGER_DEBUG);
|
|
return;
|
|
}
|
|
|
|
if (empty($activity['object'])) {
|
|
logger('Empty object', LOGGER_DEBUG);
|
|
return;
|
|
}
|
|
|
|
if (empty($activity['actor'])) {
|
|
logger('Empty actor', LOGGER_DEBUG);
|
|
return;
|
|
|
|
}
|
|
|
|
$actor = self::processElement($activity, 'actor', 'id');
|
|
if (empty($actor)) {
|
|
logger('Empty actor - 2', LOGGER_DEBUG);
|
|
return;
|
|
}
|
|
|
|
if (is_string($activity['object'])) {
|
|
$object_url = $activity['object'];
|
|
} elseif (!empty($activity['object']['id'])) {
|
|
$object_url = $activity['object']['id'];
|
|
} else {
|
|
logger('No object found', LOGGER_DEBUG);
|
|
return;
|
|
}
|
|
|
|
// ----------------------------------
|
|
/*
|
|
// unhandled
|
|
unset($activity['@context']);
|
|
unset($activity['id']);
|
|
|
|
// Non standard
|
|
unset($activity['title']);
|
|
unset($activity['atomUri']);
|
|
unset($activity['context_id']);
|
|
unset($activity['statusnetConversationId']);
|
|
|
|
// To-Do?
|
|
unset($activity['context']);
|
|
unset($activity['location']);
|
|
unset($activity['signature']);
|
|
*/
|
|
// Fetch all receivers from to, cc, bto and bcc
|
|
$receivers = self::getReceivers($activity);
|
|
|
|
// When it is a delivery to a personal inbox we add that user to the receivers
|
|
if (!empty($uid)) {
|
|
$owner = User::getOwnerDataById($uid);
|
|
$additional = [$owner['url'] => $uid];
|
|
$receivers = array_merge($receivers, $additional);
|
|
}
|
|
|
|
logger('Receivers: ' . json_encode($receivers), LOGGER_DEBUG);
|
|
|
|
logger('Processing activity: ' . $activity['type'], LOGGER_DEBUG);
|
|
|
|
// Fetch the content only on activities where this matters
|
|
if (in_array($activity['type'], ['Create', 'Update', 'Announce'])) {
|
|
$item = self::fetchObject($object_url, $activity['object']);
|
|
if (empty($item)) {
|
|
logger("Object data couldn't be processed", LOGGER_DEBUG);
|
|
return;
|
|
}
|
|
} else {
|
|
if (in_array($activity['type'], ['Accept'])) {
|
|
$item['object'] = self::processElement($activity, 'object', 'actor', 'type', 'Follow');
|
|
} elseif (in_array($activity['type'], ['Undo'])) {
|
|
$item['object'] = self::processElement($activity, 'object', 'object', 'type', 'Follow');
|
|
} else {
|
|
$item['object'] = $object_url;
|
|
}
|
|
$item['id'] = $activity['id'];
|
|
$item['receiver'] = [];
|
|
$item['type'] = $activity['type'];
|
|
}
|
|
|
|
$item = self::addActivityFields($item, $activity);
|
|
|
|
$item['owner'] = $actor;
|
|
|
|
$item['receiver'] = array_merge($item['receiver'], $receivers);
|
|
|
|
switch ($activity['type']) {
|
|
case 'Create':
|
|
case 'Update':
|
|
case 'Announce':
|
|
self::createItem($item, $body);
|
|
break;
|
|
|
|
case 'Like':
|
|
self::likeItem($item, $body);
|
|
break;
|
|
|
|
case 'Dislike':
|
|
break;
|
|
|
|
case 'Delete':
|
|
break;
|
|
|
|
case 'Follow':
|
|
self::followUser($item);
|
|
break;
|
|
|
|
case 'Accept':
|
|
self::acceptFollowUser($item);
|
|
break;
|
|
|
|
case 'Undo':
|
|
self::undoFollowUser($item);
|
|
break;
|
|
|
|
default:
|
|
logger('Unknown activity: ' . $activity['type'], LOGGER_DEBUG);
|
|
break;
|
|
}
|
|
}
|
|
|
|
private static function getReceivers($activity)
|
|
{
|
|
$receivers = [];
|
|
|
|
$elements = ['to', 'cc', 'bto', 'bcc'];
|
|
foreach ($elements as $element) {
|
|
if (empty($activity[$element])) {
|
|
continue;
|
|
}
|
|
|
|
// The receiver can be an arror or a string
|
|
if (is_string($activity[$element])) {
|
|
$activity[$element] = [$activity[$element]];
|
|
}
|
|
|
|
foreach ($activity[$element] as $receiver) {
|
|
if ($receiver == self::PUBLIC) {
|
|
$receivers[$receiver] = 0;
|
|
}
|
|
|
|
$condition = ['self' => true, 'nurl' => normalise_link($receiver)];
|
|
$contact = DBA::selectFirst('contact', ['uid'], $condition);
|
|
if (!DBA::isResult($contact)) {
|
|
continue;
|
|
}
|
|
$receivers[$receiver] = $contact['uid'];
|
|
}
|
|
}
|
|
return $receivers;
|
|
}
|
|
|
|
private static function addActivityFields($item, $activity)
|
|
{
|
|
if (!empty($activity['published']) && empty($item['published'])) {
|
|
$item['published'] = $activity['published'];
|
|
}
|
|
|
|
if (!empty($activity['updated']) && empty($item['updated'])) {
|
|
$item['updated'] = $activity['updated'];
|
|
}
|
|
|
|
if (!empty($activity['inReplyTo']) && empty($item['parent-uri'])) {
|
|
$item['parent-uri'] = self::processElement($activity, 'inReplyTo', 'id');
|
|
}
|
|
|
|
if (!empty($activity['instrument'])) {
|
|
$item['service'] = self::processElement($activity, 'instrument', 'name', 'type', 'Service');
|
|
}
|
|
return $item;
|
|
}
|
|
|
|
private static function fetchObject($object_url, $object = [])
|
|
{
|
|
$data = self::fetchContent($object_url);
|
|
if (empty($data)) {
|
|
$data = $object;
|
|
if (empty($data)) {
|
|
logger('Empty content', LOGGER_DEBUG);
|
|
return false;
|
|
} elseif (is_string($data)) {
|
|
logger('No object array provided.', LOGGER_DEBUG);
|
|
$item = Item::selectFirst([], ['uri' => $data]);
|
|
if (!DBA::isResult($item)) {
|
|
logger('Object with url ' . $data . ' was not found locally.', LOGGER_DEBUG);
|
|
return false;
|
|
}
|
|
logger('Using already stored item', LOGGER_DEBUG);
|
|
$data = self::createNote($item);
|
|
} else {
|
|
logger('Using provided object', LOGGER_DEBUG);
|
|
}
|
|
}
|
|
|
|
if (empty($data['type'])) {
|
|
logger('Empty type', LOGGER_DEBUG);
|
|
return false;
|
|
} else {
|
|
$type = $data['type'];
|
|
logger('Type ' . $type, LOGGER_DEBUG);
|
|
}
|
|
|
|
if (in_array($type, ['Note', 'Article', 'Video'])) {
|
|
$common = self::processCommonData($data);
|
|
}
|
|
|
|
switch ($type) {
|
|
case 'Note':
|
|
return array_merge($common, self::processNote($data));
|
|
case 'Article':
|
|
return array_merge($common, self::processArticle($data));
|
|
case 'Video':
|
|
return array_merge($common, self::processVideo($data));
|
|
|
|
case 'Announce':
|
|
if (empty($data['object'])) {
|
|
return false;
|
|
}
|
|
return self::fetchObject($data['object']);
|
|
|
|
case 'Person':
|
|
case 'Tombstone':
|
|
break;
|
|
|
|
default:
|
|
logger('Unknown object type: ' . $data['type'], LOGGER_DEBUG);
|
|
break;
|
|
}
|
|
}
|
|
|
|
private static function processCommonData(&$object)
|
|
{
|
|
if (empty($object['id']) || empty($object['attributedTo'])) {
|
|
return false;
|
|
}
|
|
|
|
$item = [];
|
|
$item['type'] = $object['type'];
|
|
$item['uri'] = $object['id'];
|
|
|
|
if (!empty($object['inReplyTo'])) {
|
|
$item['reply-to-uri'] = self::processElement($object, 'inReplyTo', 'id');
|
|
} else {
|
|
$item['reply-to-uri'] = $item['uri'];
|
|
}
|
|
|
|
$item['published'] = defaults($object, 'published', null);
|
|
$item['updated'] = defaults($object, 'updated', $item['published']);
|
|
|
|
if (empty($item['published']) && !empty($item['updated'])) {
|
|
$item['published'] = $item['updated'];
|
|
}
|
|
|
|
$item['uuid'] = defaults($object, 'uuid', null);
|
|
$item['owner'] = $item['author'] = self::processElement($object, 'attributedTo', 'id');
|
|
$item['context'] = defaults($object, 'context', null);
|
|
$item['conversation'] = defaults($object, 'conversation', null);
|
|
$item['sensitive'] = defaults($object, 'sensitive', null);
|
|
$item['name'] = defaults($object, 'title', null);
|
|
$item['name'] = defaults($object, 'name', $item['name']);
|
|
$item['summary'] = defaults($object, 'summary', null);
|
|
$item['content'] = defaults($object, 'content', null);
|
|
$item['source'] = defaults($object, 'source', null);
|
|
$item['location'] = self::processElement($object, 'location', 'name', 'type', 'Place');
|
|
$item['attachments'] = defaults($object, 'attachment', null);
|
|
$item['tags'] = defaults($object, 'tag', null);
|
|
$item['service'] = self::processElement($object, 'instrument', 'name', 'type', 'Service');
|
|
$item['alternate-url'] = self::processElement($object, 'url', 'href');
|
|
$item['receiver'] = self::getReceivers($object);
|
|
|
|
/*
|
|
// To-Do
|
|
unset($object['source']);
|
|
|
|
// Unhandled
|
|
unset($object['@context']);
|
|
unset($object['type']);
|
|
unset($object['actor']);
|
|
unset($object['signature']);
|
|
unset($object['mediaType']);
|
|
unset($object['duration']);
|
|
unset($object['replies']);
|
|
unset($object['icon']);
|
|
|
|
// Also missing:
|
|
audience, preview, endTime, startTime, generator, image
|
|
*/
|
|
return $item;
|
|
}
|
|
|
|
private static function processNote($object)
|
|
{
|
|
$item = [];
|
|
|
|
/*
|
|
// To-Do?
|
|
unset($object['emoji']);
|
|
unset($object['atomUri']);
|
|
unset($object['inReplyToAtomUri']);
|
|
|
|
// Unhandled
|
|
unset($object['contentMap']);
|
|
unset($object['announcement_count']);
|
|
unset($object['announcements']);
|
|
unset($object['context_id']);
|
|
unset($object['likes']);
|
|
unset($object['like_count']);
|
|
unset($object['inReplyToStatusId']);
|
|
unset($object['shares']);
|
|
unset($object['quoteUrl']);
|
|
unset($object['statusnetConversationId']);
|
|
*/
|
|
return $item;
|
|
}
|
|
|
|
private static function processArticle($object)
|
|
{
|
|
$item = [];
|
|
|
|
return $item;
|
|
}
|
|
|
|
private static function processVideo($object)
|
|
{
|
|
$item = [];
|
|
/*
|
|
// To-Do?
|
|
unset($object['category']);
|
|
unset($object['licence']);
|
|
unset($object['language']);
|
|
unset($object['commentsEnabled']);
|
|
|
|
// Unhandled
|
|
unset($object['views']);
|
|
unset($object['waitTranscoding']);
|
|
unset($object['state']);
|
|
unset($object['support']);
|
|
unset($object['subtitleLanguage']);
|
|
unset($object['likes']);
|
|
unset($object['dislikes']);
|
|
unset($object['shares']);
|
|
unset($object['comments']);
|
|
*/
|
|
return $item;
|
|
}
|
|
|
|
private static function processElement($array, $element, $key, $type = null, $type_value = null)
|
|
{
|
|
if (empty($array)) {
|
|
return false;
|
|
}
|
|
|
|
if (empty($array[$element])) {
|
|
return false;
|
|
}
|
|
|
|
if (is_string($array[$element])) {
|
|
return $array[$element];
|
|
}
|
|
|
|
if (is_null($type_value)) {
|
|
if (!empty($array[$element][$key])) {
|
|
return $array[$element][$key];
|
|
}
|
|
|
|
if (!empty($array[$element][0][$key])) {
|
|
return $array[$element][0][$key];
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
if (!empty($array[$element][$key]) && !empty($array[$element][$type]) && ($array[$element][$type] == $type_value)) {
|
|
return $array[$element][$key];
|
|
}
|
|
|
|
/// @todo Add array search
|
|
|
|
return false;
|
|
}
|
|
|
|
private static function convertMentions($body)
|
|
{
|
|
$URLSearchString = "^\[\]";
|
|
$body = preg_replace("/\[url\=([$URLSearchString]*)\]([#@!])(.*?)\[\/url\]/ism", '$2[url=$1]$3[/url]', $body);
|
|
|
|
return $body;
|
|
}
|
|
|
|
private static function constructTagList($tags, $sensitive)
|
|
{
|
|
if (empty($tags)) {
|
|
return '';
|
|
}
|
|
|
|
$tag_text = '';
|
|
foreach ($tags as $tag) {
|
|
if (in_array($tag['type'], ['Mention', 'Hashtag'])) {
|
|
if (!empty($tag_text)) {
|
|
$tag_text .= ',';
|
|
}
|
|
|
|
$tag_text .= substr($tag['name'], 0, 1) . '[url=' . $tag['href'] . ']' . substr($tag['name'], 1) . '[/url]';
|
|
}
|
|
}
|
|
|
|
/// @todo add nsfw for $sensitive
|
|
|
|
return $tag_text;
|
|
}
|
|
|
|
private static function constructAttachList($attachments, $item)
|
|
{
|
|
if (empty($attachments)) {
|
|
return $item;
|
|
}
|
|
|
|
foreach ($attachments as $attach) {
|
|
$filetype = strtolower(substr($attach['mediaType'], 0, strpos($attach['mediaType'], '/')));
|
|
if ($filetype == 'image') {
|
|
$item['body'] .= "\n[img]".$attach['url'].'[/img]';
|
|
} else {
|
|
if (!empty($item["attach"])) {
|
|
$item["attach"] .= ',';
|
|
} else {
|
|
$item["attach"] = '';
|
|
}
|
|
if (!isset($attach['length'])) {
|
|
$attach['length'] = "0";
|
|
}
|
|
$item["attach"] .= '[attach]href="'.$attach['url'].'" length="'.$attach['length'].'" type="'.$attach['mediaType'].'" title="'.defaults($attach, 'name', '').'"[/attach]';
|
|
}
|
|
}
|
|
|
|
return $item;
|
|
}
|
|
|
|
private static function createItem($activity, $body)
|
|
{
|
|
$item = [];
|
|
$item['verb'] = ACTIVITY_POST;
|
|
$item['parent-uri'] = $activity['reply-to-uri'];
|
|
|
|
if ($activity['reply-to-uri'] == $activity['uri']) {
|
|
$item['gravity'] = GRAVITY_PARENT;
|
|
$item['object-type'] = ACTIVITY_OBJ_NOTE;
|
|
} else {
|
|
$item['gravity'] = GRAVITY_COMMENT;
|
|
$item['object-type'] = ACTIVITY_OBJ_COMMENT;
|
|
}
|
|
|
|
self::postItem($activity, $item, $body);
|
|
}
|
|
|
|
private static function likeItem($activity, $body)
|
|
{
|
|
$item = [];
|
|
$item['verb'] = ACTIVITY_LIKE;
|
|
$item['parent-uri'] = $activity['object'];
|
|
$item['gravity'] = GRAVITY_ACTIVITY;
|
|
$item['object-type'] = ACTIVITY_OBJ_NOTE;
|
|
|
|
self::postItem($activity, $item, $body);
|
|
}
|
|
|
|
private static function postItem($activity, $item, $body)
|
|
{
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/// @todo What to do with $activity['context']?
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|
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$item['network'] = Protocol::ACTIVITYPUB;
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$item['private'] = !in_array(0, $activity['receiver']);
|
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$item['author-id'] = Contact::getIdForURL($activity['author'], 0, true);
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$item['owner-id'] = Contact::getIdForURL($activity['owner'], 0, true);
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$item['uri'] = $activity['uri'];
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$item['created'] = $activity['published'];
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$item['edited'] = $activity['updated'];
|
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$item['guid'] = $activity['uuid'];
|
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$item['title'] = HTML::toBBCode($activity['name']);
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|
$item['content-warning'] = HTML::toBBCode($activity['summary']);
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|
$item['body'] = self::convertMentions(HTML::toBBCode($activity['content']));
|
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$item['location'] = $activity['location'];
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$item['tag'] = self::constructTagList($activity['tags'], $activity['sensitive']);
|
|
$item['app'] = $activity['service'];
|
|
$item['plink'] = defaults($activity, 'alternate-url', $item['uri']);
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|
|
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$item = self::constructAttachList($activity['attachments'], $item);
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|
|
|
$source = self::processElement($activity, 'source', 'content', 'mediaType', 'text/bbcode');
|
|
if (!empty($source)) {
|
|
$item['body'] = $source;
|
|
}
|
|
|
|
$item['protocol'] = Conversation::PARCEL_ACTIVITYPUB;
|
|
$item['source'] = $body;
|
|
$item['conversation-uri'] = $activity['conversation'];
|
|
|
|
foreach ($activity['receiver'] as $receiver) {
|
|
$item['uid'] = $receiver;
|
|
$item['contact-id'] = Contact::getIdForURL($activity['author'], $receiver, true);
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|
|
|
if (($receiver != 0) && empty($item['contact-id'])) {
|
|
$item['contact-id'] = Contact::getIdForURL($activity['author'], 0, true);
|
|
}
|
|
|
|
$item_id = Item::insert($item);
|
|
logger('Storing for user ' . $item['uid'] . ': ' . $item_id);
|
|
if (!empty($item_id) && ($item['uid'] == 0)) {
|
|
Item::distribute($item_id);
|
|
}
|
|
}
|
|
}
|
|
|
|
private static function followUser($activity)
|
|
{
|
|
if (empty($activity['receiver'][$activity['object']])) {
|
|
return;
|
|
}
|
|
|
|
$uid = $activity['receiver'][$activity['object']];
|
|
$owner = User::getOwnerDataById($uid);
|
|
|
|
$cid = Contact::getIdForURL($activity['owner'], $uid);
|
|
if (!empty($cid)) {
|
|
$contact = DBA::selectFirst('contact', [], ['id' => $cid]);
|
|
} else {
|
|
$contact = false;
|
|
}
|
|
|
|
$item = ['author-id' => Contact::getIdForURL($activity['owner']),
|
|
'author-link' => $activity['owner']];
|
|
|
|
Contact::addRelationship($owner, $contact, $item);
|
|
$cid = Contact::getIdForURL($activity['owner'], $uid);
|
|
if (empty($cid)) {
|
|
return;
|
|
}
|
|
|
|
$contact = DBA::selectFirst('contact', ['network'], ['id' => $cid]);
|
|
if ($contact['network'] != Protocol::ACTIVITYPUB) {
|
|
Contact::updateFromProbe($cid, Protocol::ACTIVITYPUB);
|
|
}
|
|
|
|
DBA::update('contact', ['hub-verify' => $activity['id']], ['id' => $cid]);
|
|
logger('Follow user ' . $uid . ' from contact ' . $cid . ' with id ' . $activity['id']);
|
|
}
|
|
|
|
private static function acceptFollowUser($activity)
|
|
{
|
|
if (empty($activity['receiver'][$activity['object']])) {
|
|
return;
|
|
}
|
|
|
|
$uid = $activity['receiver'][$activity['object']];
|
|
$owner = User::getOwnerDataById($uid);
|
|
|
|
$cid = Contact::getIdForURL($activity['owner'], $uid);
|
|
if (empty($cid)) {
|
|
logger('No contact found for ' . $activity['owner'], LOGGER_DEBUG);
|
|
return;
|
|
}
|
|
|
|
$fields = ['pending' => false];
|
|
$condition = ['id' => $cid, 'pending' => true];
|
|
DBA::update('comtact', $fields, $condition);
|
|
logger('Accept contact request from contact ' . $cid . ' for user ' . $uid, LOGGER_DEBUG);
|
|
}
|
|
|
|
private static function undoFollowUser($activity)
|
|
{
|
|
if (empty($activity['receiver'][$activity['object']])) {
|
|
return;
|
|
}
|
|
|
|
$uid = $activity['receiver'][$activity['object']];
|
|
$owner = User::getOwnerDataById($uid);
|
|
|
|
$cid = Contact::getIdForURL($activity['owner'], $uid);
|
|
if (empty($cid)) {
|
|
logger('No contact found for ' . $activity['owner'], LOGGER_DEBUG);
|
|
return;
|
|
}
|
|
|
|
$contact = DBA::selectFirst('contact', [], ['id' => $cid]);
|
|
if (!DBA::isResult($contact)) {
|
|
return;
|
|
}
|
|
|
|
Contact::removeFollower($owner, $contact);
|
|
logger('Undo following request from contact ' . $cid . ' for user ' . $uid, LOGGER_DEBUG);
|
|
}
|
|
}
|