X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FProtocol%2FActivityPub.php;h=bf8fed94c6078652f0ef9dcede2feabe5c427567;hb=c7308d98fa6e40fbef4f212300cc0ef6739e9c00;hp=95542ba966200b9fb14aa261f11013814e0468cc;hpb=214407bdc8e7ae126f1b44eaaa1f902e38fb1b9d;p=friendica.git diff --git a/src/Protocol/ActivityPub.php b/src/Protocol/ActivityPub.php index 95542ba966..bf8fed94c6 100644 --- a/src/Protocol/ActivityPub.php +++ b/src/Protocol/ActivityPub.php @@ -4,23 +4,11 @@ */ namespace Friendica\Protocol; -use Friendica\Database\DBA; -use Friendica\Core\System; -use Friendica\BaseObject; +use Friendica\Util\JsonLD; use Friendica\Util\Network; -use Friendica\Util\HTTPSignature; use Friendica\Core\Protocol; -use Friendica\Model\Conversation; -use Friendica\Model\Contact; -use Friendica\Model\Item; -use Friendica\Model\Term; -use Friendica\Model\User; -use Friendica\Util\DateTimeFormat; -use Friendica\Util\Crypto; -use Friendica\Content\Text\BBCode; -use Friendica\Content\Text\HTML; -use Friendica\Util\JsonLD; -use Friendica\Util\LDSignature; +use Friendica\Model\APContact; +use Friendica\Util\HTTPSignature; /** * @brief ActivityPub Protocol class @@ -34,625 +22,68 @@ use Friendica\Util\LDSignature; * * Digest: https://tools.ietf.org/html/rfc5843 * https://tools.ietf.org/html/draft-cavage-http-signatures-10#ref-15 - * https://github.com/digitalbazaar/php-json-ld * - * Part of the code for HTTP signing is taken from the Osada project. - * https://framagit.org/macgirvin/osada + * Mastodon implementation of supported activities: + * https://github.com/tootsuite/mastodon/blob/master/app/lib/activitypub/activity.rb#L26 * - * To-do: - * - * Receiver: - * - Activities: Dislike, Update, Delete - * - Object Types: Person, Tombstome + * Funkwhale: + * http://docs-funkwhale-funkwhale-549-music-federation-documentation.preview.funkwhale.audio/federation/index.html * - * Transmitter: - * - Activities: Like, Dislike, Update, Delete, Announce - * - Object Tyoes: Article, Person, Tombstone + * To-do: + * - Polling the outboxes for missing content? * - * General: - * - Endpoints: Outbox, Follower, Following - * - General cleanup - * - Queueing unsucessful deliveries + * Missing parts from DFRN: + * - Public Forum + * - Private Forum + * - Relocation */ class ActivityPub { - const PUBLIC = 'https://www.w3.org/ns/activitystreams#Public'; - - public static function isRequest() - { - return stristr(defaults($_SERVER, 'HTTP_ACCEPT', ''), 'application/activity+json') || - stristr(defaults($_SERVER, 'HTTP_ACCEPT', ''), 'application/ld+json'); - } - + const PUBLIC_COLLECTION = 'https://www.w3.org/ns/activitystreams#Public'; + const CONTEXT = ['https://www.w3.org/ns/activitystreams', 'https://w3id.org/security/v1', + ['vcard' => 'http://www.w3.org/2006/vcard/ns#', + 'dfrn' => 'http://purl.org/macgirvin/dfrn/1.0/', + 'diaspora' => 'https://diasporafoundation.org/ns/', + 'manuallyApprovesFollowers' => 'as:manuallyApprovesFollowers', + 'sensitive' => 'as:sensitive', 'Hashtag' => 'as:Hashtag']]; + const ACCOUNT_TYPES = ['Person', 'Organization', 'Service', 'Group', 'Application']; /** - * Return the ActivityPub profile of the given user + * Checks if the web request is done for the AP protocol * - * @param integer $uid User ID - * @return array + * @return bool is it AP? */ - public static function profile($uid) - { - $accounttype = ['Person', 'Organization', 'Service', 'Group', 'Application']; - $condition = ['uid' => $uid, 'blocked' => false, 'account_expired' => false, - 'account_removed' => false, 'verified' => true]; - $fields = ['guid', 'nickname', 'pubkey', 'account-type', 'page-flags']; - $user = DBA::selectFirst('user', $fields, $condition); - if (!DBA::isResult($user)) { - return []; - } - - $fields = ['locality', 'region', 'country-name']; - $profile = DBA::selectFirst('profile', $fields, ['uid' => $uid, 'is-default' => true]); - if (!DBA::isResult($profile)) { - return []; - } - - $fields = ['name', 'url', 'location', 'about', 'avatar']; - $contact = DBA::selectFirst('contact', $fields, ['uid' => $uid, 'self' => true]); - if (!DBA::isResult($contact)) { - return []; - } - - $data = ['@context' => ['https://www.w3.org/ns/activitystreams', 'https://w3id.org/security/v1', - ['vcard' => 'http://www.w3.org/2006/vcard/ns#', 'uuid' => 'http://schema.org/identifier', - 'sensitive' => 'as:sensitive', 'manuallyApprovesFollowers' => 'as:manuallyApprovesFollowers']]]; - - $data['id'] = $contact['url']; - $data['uuid'] = $user['guid']; - $data['type'] = $accounttype[$user['account-type']]; - $data['following'] = System::baseUrl() . '/following/' . $user['nickname']; - $data['followers'] = System::baseUrl() . '/followers/' . $user['nickname']; - $data['inbox'] = System::baseUrl() . '/inbox/' . $user['nickname']; - $data['outbox'] = System::baseUrl() . '/outbox/' . $user['nickname']; - $data['preferredUsername'] = $user['nickname']; - $data['name'] = $contact['name']; - $data['vcard:hasAddress'] = ['@type' => 'vcard:Home', 'vcard:country-name' => $profile['country-name'], - 'vcard:region' => $profile['region'], 'vcard:locality' => $profile['locality']]; - $data['summary'] = $contact['about']; - $data['url'] = $contact['url']; - $data['manuallyApprovesFollowers'] = in_array($user['page-flags'], [Contact::PAGE_NORMAL, Contact::PAGE_PRVGROUP]); - $data['publicKey'] = ['id' => $contact['url'] . '#main-key', - 'owner' => $contact['url'], - 'publicKeyPem' => $user['pubkey']]; - $data['endpoints'] = ['sharedInbox' => System::baseUrl() . '/inbox']; - $data['icon'] = ['type' => 'Image', - 'url' => $contact['avatar']]; - - // tags: https://kitty.town/@inmysocks/100656097926961126.json - return $data; - } - - private static function fetchPermissionBlockFromConversation($item) - { - if (empty($item['thr-parent'])) { - return []; - } - - $condition = ['item-uri' => $item['thr-parent'], 'protocol' => Conversation::PARCEL_ACTIVITYPUB]; - $conversation = DBA::selectFirst('conversation', ['source'], $condition); - if (!DBA::isResult($conversation)) { - return []; - } - - $activity = json_decode($conversation['source'], true); - - $actor = JsonLD::fetchElement($activity, 'actor', 'id'); - $profile = ActivityPub::fetchprofile($actor); - - $item_profile = ActivityPub::fetchprofile($item['owner-link']); - - $permissions = []; - - $elements = ['to', 'cc', 'bto', 'bcc']; - foreach ($elements as $element) { - if (empty($activity[$element])) { - continue; - } - if (is_string($activity[$element])) { - $activity[$element] = [$activity[$element]]; - } - foreach ($activity[$element] as $receiver) { - if ($receiver == $profile['followers'] && !empty($item_profile['followers'])) { - $receiver = $item_profile['followers']; - } - if ($receiver != $item['owner-link']) { - $permissions[$element][] = $receiver; - } - } - } - return $permissions; - } - - public static function createPermissionBlockForItem($item) - { - $data = ['to' => [], 'cc' => []]; - - $data = array_merge($data, self::fetchPermissionBlockFromConversation($item)); - - $actor_profile = ActivityPub::fetchprofile($item['author-link']); - - $terms = Term::tagArrayFromItemId($item['id']); - - $contacts[$item['author-link']] = $item['author-link']; - - if (!$item['private']) { - $data['to'][] = self::PUBLIC; - if (!empty($actor_profile['followers'])) { - $data['cc'][] = $actor_profile['followers']; - } - - foreach ($terms as $term) { - if ($term['type'] != TERM_MENTION) { - continue; - } - $profile = self::fetchprofile($term['url']); - if (!empty($profile) && empty($contacts[$profile['url']])) { - $data['cc'][] = $profile['url']; - $contacts[$profile['url']] = $profile['url']; - } - } - } else { - $receiver_list = Item::enumeratePermissions($item); - - $mentioned = []; - - foreach ($terms as $term) { - if ($term['type'] != TERM_MENTION) { - continue; - } - $cid = Contact::getIdForURL($term['url'], $item['uid']); - if (!empty($cid) && in_array($cid, $receiver_list)) { - $contact = DBA::selectFirst('contact', ['url'], ['id' => $cid, 'network' => Protocol::ACTIVITYPUB]); - $data['to'][] = $contact['url']; - $contacts[$contact['url']] = $contact['url']; - } - } - - foreach ($receiver_list as $receiver) { - $contact = DBA::selectFirst('contact', ['url'], ['id' => $receiver, 'network' => Protocol::ACTIVITYPUB]); - if (empty($contacts[$contact['url']])) { - $data['cc'][] = $contact['url']; - $contacts[$contact['url']] = $contact['url']; - } - } - } - - $parents = Item::select(['author-link', 'owner-link'], ['parent' => $item['parent']]); - while ($parent = Item::fetch($parents)) { - $profile = self::fetchprofile($parent['author-link']); - if (!empty($profile) && empty($contacts[$profile['url']])) { - $data['cc'][] = $profile['url']; - $contacts[$profile['url']] = $profile['url']; - } - - $profile = self::fetchprofile($parent['owner-link']); - if (!empty($profile) && empty($contacts[$profile['url']])) { - $data['cc'][] = $profile['url']; - $contacts[$profile['url']] = $profile['url']; - } - } - DBA::close($parents); - - if (empty($data['to'])) { - $data['to'] = $data['cc']; - $data['cc'] = []; - } - - return $data; - } - - public static function fetchTargetInboxes($item, $uid) - { - $permissions = self::createPermissionBlockForItem($item); - if (empty($permissions)) { - return []; - } - - $inboxes = []; - - $item_profile = ActivityPub::fetchprofile($item['owner-link']); - - $elements = ['to', 'cc', 'bto', 'bcc']; - foreach ($elements as $element) { - if (empty($permissions[$element])) { - continue; - } - foreach ($permissions[$element] as $receiver) { - if ($receiver == $item_profile['followers']) { - $contacts = DBA::select('contact', ['notify', 'batch'], ['uid' => $uid, - 'rel' => [Contact::FOLLOWER, Contact::FRIEND], 'network' => Protocol::ACTIVITYPUB]); - while ($contact = DBA::fetch($contacts)) { - $contact = defaults($contact, 'batch', $contact['notify']); - $inboxes[$contact] = $contact; - } - DBA::close($contacts); - } else { - $profile = self::fetchprofile($receiver); - if (!empty($profile)) { - $target = defaults($profile, 'sharedinbox', $profile['inbox']); - $inboxes[$target] = $target; - } - } - } - } - - if (!empty($item_profile['sharedinbox'])) { - unset($inboxes[$item_profile['sharedinbox']]); - } - - if (!empty($item_profile['inbox'])) { - unset($inboxes[$item_profile['inbox']]); - } - - return $inboxes; - } - - public static function createActivityFromItem($item_id) - { - $item = Item::selectFirst([], ['id' => $item_id]); - - if (!DBA::isResult($item)) { - return false; - } - - $condition = ['item-uri' => $item['uri'], 'protocol' => Conversation::PARCEL_ACTIVITYPUB]; - $conversation = DBA::selectFirst('conversation', ['source'], $condition); - if (DBA::isResult($conversation)) { - $data = json_decode($conversation['source']); - if (!empty($data)) { - return $data; - } - } - - $data = ['@context' => ['https://www.w3.org/ns/activitystreams', 'https://w3id.org/security/v1', - ['ostatus' => 'http://ostatus.org#', 'sensitive' => 'as:sensitive', - 'Hashtag' => 'as:Hashtag', 'atomUri' => 'ostatus:atomUri', - 'conversation' => 'ostatus:conversation', - 'inReplyToAtomUri' => 'ostatus:inReplyToAtomUri']]]; - - $data['id'] = $item['uri'] . '#activity'; - $data['type'] = 'Create'; - $data['actor'] = $item['author-link']; - - $data['published'] = DateTimeFormat::utc($item["created"]."+00:00", DateTimeFormat::ATOM); - - if ($item["created"] != $item["edited"]) { - $data['updated'] = DateTimeFormat::utc($item["edited"]."+00:00", DateTimeFormat::ATOM); - } - - $data['context_id'] = $item['parent']; - $data['context'] = self::createConversationURLFromItem($item); - - $data = array_merge($data, ActivityPub::createPermissionBlockForItem($item)); - - $data['object'] = self::createObjectTypeFromItem($item); - - $owner = User::getOwnerDataById($item['uid']); - - return LDSignature::sign($data, $owner); - } - - public static function createObjectFromItemID($item_id) - { - $item = Item::selectFirst([], ['id' => $item_id]); - - if (!DBA::isResult($item)) { - return false; - } - - $data = ['@context' => ['https://www.w3.org/ns/activitystreams', 'https://w3id.org/security/v1', - ['ostatus' => 'http://ostatus.org#', 'sensitive' => 'as:sensitive', - 'Hashtag' => 'as:Hashtag', 'atomUri' => 'ostatus:atomUri', - 'conversation' => 'ostatus:conversation', - 'inReplyToAtomUri' => 'ostatus:inReplyToAtomUri']]]; - - $data = array_merge($data, self::createObjectTypeFromItem($item)); - - - return $data; - } - - private static function createTagList($item) - { - $tags = []; - - $terms = Term::tagArrayFromItemId($item['id']); - foreach ($terms as $term) { - if ($term['type'] == TERM_MENTION) { - $contact = Contact::getDetailsByURL($term['url']); - if (!empty($contact['addr'])) { - $mention = '@' . $contact['addr']; - } else { - $mention = '@' . $term['url']; - } - - $tags[] = ['type' => 'Mention', 'href' => $term['url'], 'name' => $mention]; - } - } - return $tags; - } - - private static function createConversationURLFromItem($item) - { - $conversation = DBA::selectFirst('conversation', ['conversation-uri'], ['item-uri' => $item['parent-uri']]); - if (DBA::isResult($conversation) && !empty($conversation['conversation-uri'])) { - $conversation_uri = $conversation['conversation-uri']; - } else { - $conversation_uri = $item['parent-uri']; - } - return $conversation_uri; - } - - private static function createObjectTypeFromItem($item) - { - if (!empty($item['title'])) { - $type = 'Article'; - } else { - $type = 'Note'; - } - - $data = []; - $data['id'] = $item['uri']; - $data['type'] = $type; - $data['summary'] = null; // Ignore by now - - if ($item['uri'] != $item['thr-parent']) { - $data['inReplyTo'] = $item['thr-parent']; - } else { - $data['inReplyTo'] = null; - } - - $data['published'] = DateTimeFormat::utc($item["created"]."+00:00", DateTimeFormat::ATOM); - - if ($item["created"] != $item["edited"]) { - $data['updated'] = DateTimeFormat::utc($item["edited"]."+00:00", DateTimeFormat::ATOM); - } - - $data['url'] = $item['plink']; - $data['attributedTo'] = $item['author-link']; - $data['actor'] = $item['author-link']; - $data['sensitive'] = false; // - Query NSFW - $data['context_id'] = $item['parent']; - $data['conversation'] = $data['context'] = self::createConversationURLFromItem($item); - - if (!empty($item['title'])) { - $data['name'] = BBCode::convert($item['title'], false, 7); - } - - $data['content'] = BBCode::convert($item['body'], false, 7); - $data['source'] = ['content' => $item['body'], 'mediaType' => "text/bbcode"]; - $data['attachment'] = []; // @ToDo - $data['tag'] = self::createTagList($item); - $data = array_merge($data, ActivityPub::createPermissionBlockForItem($item)); - - //$data['emoji'] = []; // Ignore by now - return $data; - } - - public static function transmitActivity($activity, $target, $uid) - { - $profile = self::fetchprofile($target); - - $owner = User::getOwnerDataById($uid); - - $data = ['@context' => 'https://www.w3.org/ns/activitystreams', - 'id' => System::baseUrl() . '/activity/' . System::createGUID(), - 'type' => $activity, - 'actor' => $owner['url'], - 'object' => $profile['url'], - 'to' => $profile['url']]; - - logger('Sending activity ' . $activity . ' to ' . $target . ' for user ' . $uid, LOGGER_DEBUG); - - $signed = LDSignature::sign($data, $owner); - return HTTPSignature::transmit($signed, $profile['inbox'], $uid); - } - - public static function transmitContactAccept($target, $id, $uid) - { - $profile = self::fetchprofile($target); - - $owner = User::getOwnerDataById($uid); - $data = ['@context' => 'https://www.w3.org/ns/activitystreams', - 'id' => System::baseUrl() . '/activity/' . System::createGUID(), - 'type' => 'Accept', - 'actor' => $owner['url'], - 'object' => ['id' => $id, 'type' => 'Follow', - 'actor' => $profile['url'], - 'object' => $owner['url']], - 'to' => $profile['url']]; - - logger('Sending accept to ' . $target . ' for user ' . $uid . ' with id ' . $id, LOGGER_DEBUG); - - $signed = LDSignature::sign($data, $owner); - return HTTPSignature::transmit($signed, $profile['inbox'], $uid); - } - - public static function transmitContactReject($target, $id, $uid) - { - $profile = self::fetchprofile($target); - - $owner = User::getOwnerDataById($uid); - $data = ['@context' => 'https://www.w3.org/ns/activitystreams', - 'id' => System::baseUrl() . '/activity/' . System::createGUID(), - 'type' => 'Reject', - 'actor' => $owner['url'], - 'object' => ['id' => $id, 'type' => 'Follow', - 'actor' => $profile['url'], - 'object' => $owner['url']], - 'to' => $profile['url']]; - - logger('Sending reject to ' . $target . ' for user ' . $uid . ' with id ' . $id, LOGGER_DEBUG); - - $signed = LDSignature::sign($data, $owner); - return HTTPSignature::transmit($signed, $profile['inbox'], $uid); - } - - public static function transmitContactUndo($target, $uid) + public static function isRequest() { - $profile = self::fetchprofile($target); - - $id = System::baseUrl() . '/activity/' . System::createGUID(); - - $owner = User::getOwnerDataById($uid); - $data = ['@context' => 'https://www.w3.org/ns/activitystreams', - 'id' => $id, - 'type' => 'Undo', - 'actor' => $owner['url'], - 'object' => ['id' => $id, 'type' => 'Follow', - 'actor' => $owner['url'], - 'object' => $profile['url']], - 'to' => $profile['url']]; - - logger('Sending undo to ' . $target . ' for user ' . $uid . ' with id ' . $id, LOGGER_DEBUG); - - $signed = LDSignature::sign($data, $owner); - return HTTPSignature::transmit($signed, $profile['inbox'], $uid); + return stristr(defaults($_SERVER, 'HTTP_ACCEPT', ''), 'application/activity+json') || + stristr(defaults($_SERVER, 'HTTP_ACCEPT', ''), 'application/ld+json'); } /** * Fetches ActivityPub content from the given url * - * @param string $url content url + * @param string $url content url + * @param integer $uid User ID for the signature * @return array + * @throws \Friendica\Network\HTTPException\InternalServerErrorException */ - public static function fetchContent($url) - { - $ret = Network::curl($url, false, $redirects, ['accept_content' => 'application/activity+json, application/ld+json']); - if (!$ret['success'] || empty($ret['body'])) { - return; - } - - return json_decode($ret['body'], true); - } - - /** - * Resolves the profile url from the address by using webfinger - * - * @param string $addr profile address (user@domain.tld) - * @return string url - */ - private static function addrToUrl($addr) + public static function fetchContent($url, $uid = 0) { - $addr_parts = explode('@', $addr); - if (count($addr_parts) != 2) { - return false; + if (!empty($uid)) { + return HTTPSignature::fetch($url, $uid); } - $webfinger = 'https://' . $addr_parts[1] . '/.well-known/webfinger?resource=acct:' . urlencode($addr); - - $ret = Network::curl($webfinger, false, $redirects, ['accept_content' => 'application/jrd+json,application/json']); - if (!$ret['success'] || empty($ret['body'])) { + $curlResult = Network::curl($url, false, $redirects, ['accept_content' => 'application/activity+json, application/ld+json']); + if (!$curlResult->isSuccess() || empty($curlResult->getBody())) { return false; } - $data = json_decode($ret['body'], true); + $content = json_decode($curlResult->getBody(), true); - if (empty($data['links'])) { + if (empty($content) || !is_array($content)) { return false; } - foreach ($data['links'] as $link) { - if (empty($link['href']) || empty($link['rel']) || empty($link['type'])) { - continue; - } - - if (($link['rel'] == 'self') && ($link['type'] == 'application/activity+json')) { - return $link['href']; - } - } - - return false; - } - - public static function fetchprofile($url, $update = false) - { - if (empty($url)) { - return false; - } - - if (!$update) { - $apcontact = DBA::selectFirst('apcontact', [], ['url' => $url]); - if (DBA::isResult($apcontact)) { - return $apcontact; - } - - $apcontact = DBA::selectFirst('apcontact', [], ['alias' => $url]); - if (DBA::isResult($apcontact)) { - return $apcontact; - } - - $apcontact = DBA::selectFirst('apcontact', [], ['addr' => $url]); - if (DBA::isResult($apcontact)) { - return $apcontact; - } - } - - if (empty(parse_url($url, PHP_URL_SCHEME))) { - $url = self::addrToUrl($url); - if (empty($url)) { - return false; - } - } - - $data = self::fetchContent($url); - - if (empty($data) || empty($data['id']) || empty($data['inbox'])) { - return false; - } - - $apcontact = []; - $apcontact['url'] = $data['id']; - $apcontact['uuid'] = defaults($data, 'uuid', null); - $apcontact['type'] = defaults($data, 'type', null); - $apcontact['following'] = defaults($data, 'following', null); - $apcontact['followers'] = defaults($data, 'followers', null); - $apcontact['inbox'] = defaults($data, 'inbox', null); - $apcontact['outbox'] = defaults($data, 'outbox', null); - $apcontact['sharedinbox'] = JsonLD::fetchElement($data, 'endpoints', 'sharedInbox'); - $apcontact['nick'] = defaults($data, 'preferredUsername', null); - $apcontact['name'] = defaults($data, 'name', $apcontact['nick']); - $apcontact['about'] = defaults($data, 'summary', ''); - $apcontact['photo'] = JsonLD::fetchElement($data, 'icon', 'url'); - $apcontact['alias'] = JsonLD::fetchElement($data, 'url', 'href'); - - $parts = parse_url($apcontact['url']); - unset($parts['scheme']); - unset($parts['path']); - $apcontact['addr'] = $apcontact['nick'] . '@' . str_replace('//', '', Network::unparseURL($parts)); - - $apcontact['pubkey'] = trim(JsonLD::fetchElement($data, 'publicKey', 'publicKeyPem')); - - // To-Do - // manuallyApprovesFollowers - - // Unhandled - // @context, tag, attachment, image, nomadicLocations, signature, following, followers, featured, movedTo, liked - - // Unhandled from Misskey - // sharedInbox, isCat - - // Unhandled from Kroeg - // kroeg:blocks, updated - - // Check if the address is resolvable - if (self::addrToUrl($apcontact['addr']) == $apcontact['url']) { - $parts = parse_url($apcontact['url']); - unset($parts['path']); - $apcontact['baseurl'] = Network::unparseURL($parts); - } else { - $apcontact['addr'] = null; - } - - if ($apcontact['url'] == $apcontact['alias']) { - $apcontact['alias'] = null; - } - - $apcontact['updated'] = DateTimeFormat::utcNow(); - - DBA::update('apcontact', $apcontact, ['url' => $url], true); - - return $apcontact; + return $content; } /** @@ -660,10 +91,12 @@ class ActivityPub * * @param string $url profile url * @return array + * @throws \Friendica\Network\HTTPException\InternalServerErrorException + * @throws \ImagickException */ public static function probeProfile($url) { - $apcontact = self::fetchprofile($url, true); + $apcontact = APContact::getByURL($url, true); if (empty($apcontact)) { return false; } @@ -696,52 +129,13 @@ class ActivityPub return $profile; } - public static function processInbox($body, $header, $uid) - { - $http_signer = HTTPSignature::getSigner($body, $header); - if (empty($http_signer)) { - logger('Invalid HTTP signature, message will be discarded.', LOGGER_DEBUG); - return; - } else { - logger('HTTP signature is signed by ' . $http_signer, LOGGER_DEBUG); - } - - $activity = json_decode($body, true); - - $actor = JsonLD::fetchElement($activity, 'actor', 'id'); - logger('Message for user ' . $uid . ' is from actor ' . $actor, LOGGER_DEBUG); - - if (empty($activity)) { - logger('Invalid body.', LOGGER_DEBUG); - return; - } - - if (LDSignature::isSigned($activity)) { - $ld_signer = LDSignature::getSigner($activity); - if (!empty($ld_signer && ($actor == $http_signer))) { - logger('The HTTP and the JSON-LD signature belong to ' . $ld_signer, LOGGER_DEBUG); - $trust_source = true; - } elseif (!empty($ld_signer)) { - logger('JSON-LD signature is signed by ' . $ld_signer, LOGGER_DEBUG); - $trust_source = true; - } elseif ($actor == $http_signer) { - logger('Bad JSON-LD signature, but HTTP signer fits the actor.', LOGGER_DEBUG); - $trust_source = true; - } else { - logger('Invalid JSON-LD signature and the HTTP signer is different.', LOGGER_DEBUG); - $trust_source = false; - } - } elseif ($actor == $http_signer) { - logger('Trusting post without JSON-LD signature, The actor fits the HTTP signer.', LOGGER_DEBUG); - $trust_source = true; - } else { - logger('No JSON-LD signature, different actor.', LOGGER_DEBUG); - $trust_source = false; - } - - self::processActivity($activity, $body, $uid, $trust_source); - } - + /** + * Fetches activities from the outbox of a given profile and processes it + * + * @param string $url + * @param integer $uid User ID + * @throws \Friendica\Network\HTTPException\InternalServerErrorException + */ public static function fetchOutbox($url, $uid) { $data = self::fetchContent($url); @@ -761,643 +155,8 @@ class ActivityPub } foreach ($items as $activity) { - self::processActivity($activity, '', $uid, true); - } - } - - private static function prepareObjectData($activity, $uid, $trust_source) - { - $actor = JsonLD::fetchElement($activity, 'actor', 'id'); - if (empty($actor)) { - logger('Empty actor', LOGGER_DEBUG); - return []; - } - - // Fetch all receivers from to, cc, bto and bcc - $receivers = self::getReceivers($activity, $actor); - - // When it is a delivery to a personal inbox we add that user to the receivers - if (!empty($uid)) { - $owner = User::getOwnerDataById($uid); - $additional = ['uid:' . $uid => $uid]; - $receivers = array_merge($receivers, $additional); - } - - logger('Receivers: ' . json_encode($receivers), LOGGER_DEBUG); - - if (is_string($activity['object'])) { - $object_url = $activity['object']; - } elseif (!empty($activity['object']['id'])) { - $object_url = $activity['object']['id']; - } else { - logger('No object found', LOGGER_DEBUG); - return []; - } - - // Fetch the content only on activities where this matters - if (in_array($activity['type'], ['Create', 'Update', 'Announce'])) { - $object_data = self::fetchObject($object_url, $activity['object'], $trust_source); - if (empty($object_data)) { - logger("Object data couldn't be processed", LOGGER_DEBUG); - return []; - } - } elseif ($activity['type'] == 'Accept') { - $object_data = []; - $object_data['object_type'] = JsonLD::fetchElement($activity, 'object', 'type'); - $object_data['object'] = JsonLD::fetchElement($activity, 'object', 'actor'); - } elseif ($activity['type'] == 'Undo') { - $object_data = []; - $object_data['object_type'] = JsonLD::fetchElement($activity, 'object', 'type'); - $object_data['object'] = JsonLD::fetchElement($activity, 'object', 'object'); - } elseif (in_array($activity['type'], ['Like', 'Dislike'])) { - // Create a mostly empty array out of the activity data (instead of the object). - // This way we later don't have to check for the existence of ech individual array element. - $object_data = self::processCommonData($activity); - $object_data['name'] = $activity['type']; - $object_data['author'] = $activity['actor']; - $object_data['object'] = $object_url; - } elseif ($activity['type'] == 'Follow') { - $object_data['id'] = $activity['id']; - $object_data['object'] = $object_url; - } else { - $object_data = []; - } - - $object_data = self::addActivityFields($object_data, $activity); - - $object_data['type'] = $activity['type']; - $object_data['owner'] = $actor; - $object_data['receiver'] = array_merge(defaults($object_data, 'receiver', []), $receivers); - - return $object_data; - } - - private static function processActivity($activity, $body = '', $uid = null, $trust_source = false) - { - if (empty($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; - - } - - // Non standard - // title, atomUri, context_id, statusnetConversationId - - // To-Do? - // context, location, signature; - - logger('Processing activity: ' . $activity['type'], LOGGER_DEBUG); - - $object_data = self::prepareObjectData($activity, $uid, $trust_source); - if (empty($object_data)) { - logger('No object data found', LOGGER_DEBUG); - return; - } - - switch ($activity['type']) { - case 'Create': - case 'Announce': - self::createItem($object_data, $body); - break; - - case 'Like': - self::likeItem($object_data, $body); - break; - - case 'Dislike': - break; - - case 'Update': - break; - - case 'Delete': - break; - - case 'Follow': - self::followUser($object_data); - break; - - case 'Accept': - if ($object_data['object_type'] == 'Follow') { - self::acceptFollowUser($object_data); - } - break; - - case 'Undo': - if ($object_data['object_type'] == 'Follow') { - self::undoFollowUser($object_data); - } - break; - - default: - logger('Unknown activity: ' . $activity['type'], LOGGER_DEBUG); - break; - } - } - - private static function getReceivers($activity, $actor) - { - $receivers = []; - - // When it is an answer, we inherite the receivers from the parent - $replyto = JsonLD::fetchElement($activity, 'inReplyTo', 'id'); - if (!empty($replyto)) { - $parents = Item::select(['uid'], ['uri' => $replyto]); - while ($parent = Item::fetch($parents)) { - $receivers['uid:' . $parent['uid']] = $parent['uid']; - } - } - - if (!empty($actor)) { - $profile = self::fetchprofile($actor); - $followers = defaults($profile, 'followers', ''); - - logger('Actor: ' . $actor . ' - Followers: ' . $followers, LOGGER_DEBUG); - } else { - logger('Empty actor', LOGGER_DEBUG); - $followers = ''; - } - - $elements = ['to', 'cc', 'bto', 'bcc']; - foreach ($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) { - $receivers['uid:0'] = 0; - } - - if (($receiver == self::PUBLIC) && !empty($actor)) { - // This will most likely catch all OStatus connections to Mastodon - $condition = ['alias' => [$actor, normalise_link($actor)], 'rel' => [Contact::SHARING, Contact::FRIEND]]; - $contacts = DBA::select('contact', ['uid'], $condition); - while ($contact = DBA::fetch($contacts)) { - if ($contact['uid'] != 0) { - $receivers['uid:' . $contact['uid']] = $contact['uid']; - } - } - DBA::close($contacts); - } - - if (in_array($receiver, [$followers, self::PUBLIC]) && !empty($actor)) { - $condition = ['nurl' => normalise_link($actor), 'rel' => [Contact::SHARING, Contact::FRIEND], - 'network' => Protocol::ACTIVITYPUB]; - $contacts = DBA::select('contact', ['uid'], $condition); - while ($contact = DBA::fetch($contacts)) { - if ($contact['uid'] != 0) { - $receivers['uid:' . $contact['uid']] = $contact['uid']; - } - } - DBA::close($contacts); - continue; - } - - $condition = ['self' => true, 'nurl' => normalise_link($receiver)]; - $contact = DBA::selectFirst('contact', ['uid'], $condition); - if (!DBA::isResult($contact)) { - continue; - } - $receivers['uid:' . $contact['uid']] = $contact['uid']; - } - } - return $receivers; - } - - private static function addActivityFields($object_data, $activity) - { - if (!empty($activity['published']) && empty($object_data['published'])) { - $object_data['published'] = $activity['published']; - } - - if (!empty($activity['updated']) && empty($object_data['updated'])) { - $object_data['updated'] = $activity['updated']; - } - - if (!empty($activity['inReplyTo']) && empty($object_data['parent-uri'])) { - $object_data['parent-uri'] = JsonLD::fetchElement($activity, 'inReplyTo', 'id'); - } - - if (!empty($activity['instrument'])) { - $object_data['service'] = JsonLD::fetchElement($activity, 'instrument', 'name', 'type', 'Service'); - } - return $object_data; - } - - private static function fetchObject($object_url, $object = [], $trust_source = false) - { - if (!$trust_source || is_string($object)) { - $data = self::fetchContent($object_url); - if (empty($data)) { - logger('Empty content for ' . $object_url . ', check if content is available locally.', LOGGER_DEBUG); - $data = $object_url; - } else { - logger('Fetched content for ' . $object_url, LOGGER_DEBUG); - } - } else { - logger('Using original object for url ' . $object_url, LOGGER_DEBUG); - $data = $object; - } - - if (is_string($data)) { - $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 for url ' . $object_url, LOGGER_DEBUG); - $data = self::createObjectTypeFromItem($item); - } - - 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'])) { - return false; - } - - $object_data = []; - $object_data['type'] = $object['type']; - $object_data['uri'] = $object['id']; - - if (!empty($object['inReplyTo'])) { - $object_data['reply-to-uri'] = JsonLD::fetchElement($object, 'inReplyTo', 'id'); - } else { - $object_data['reply-to-uri'] = $object_data['uri']; - } - - $object_data['published'] = defaults($object, 'published', null); - $object_data['updated'] = defaults($object, 'updated', $object_data['published']); - - if (empty($object_data['published']) && !empty($object_data['updated'])) { - $object_data['published'] = $object_data['updated']; - } - - $object_data['uuid'] = defaults($object, 'uuid', null); - $object_data['owner'] = $object_data['author'] = JsonLD::fetchElement($object, 'attributedTo', 'id'); - $object_data['context'] = defaults($object, 'context', null); - $object_data['conversation'] = defaults($object, 'conversation', null); - $object_data['sensitive'] = defaults($object, 'sensitive', null); - $object_data['name'] = defaults($object, 'title', null); - $object_data['name'] = defaults($object, 'name', $object_data['name']); - $object_data['summary'] = defaults($object, 'summary', null); - $object_data['content'] = defaults($object, 'content', null); - $object_data['source'] = defaults($object, 'source', null); - $object_data['location'] = JsonLD::fetchElement($object, 'location', 'name', 'type', 'Place'); - $object_data['attachments'] = defaults($object, 'attachment', null); - $object_data['tags'] = defaults($object, 'tag', null); - $object_data['service'] = JsonLD::fetchElement($object, 'instrument', 'name', 'type', 'Service'); - $object_data['alternate-url'] = JsonLD::fetchElement($object, 'url', 'href'); - $object_data['receiver'] = self::getReceivers($object, $object_data['owner']); - - // Unhandled - // @context, type, actor, signature, mediaType, duration, replies, icon - - // Also missing: (Defined in the standard, but currently unused) - // audience, preview, endTime, startTime, generator, image - - return $object_data; - } - - private static function processNote($object) - { - $object_data = []; - - // To-Do? - // emoji, atomUri, inReplyToAtomUri - - // Unhandled - // contentMap, announcement_count, announcements, context_id, likes, like_count - // inReplyToStatusId, shares, quoteUrl, statusnetConversationId - - return $object_data; - } - - private static function processArticle($object) - { - $object_data = []; - - return $object_data; - } - - private static function processVideo($object) - { - $object_data = []; - - // To-Do? - // category, licence, language, commentsEnabled - - // Unhandled - // views, waitTranscoding, state, support, subtitleLanguage - // likes, dislikes, shares, comments - - return $object_data; - } - - private static function convertMentions($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)) { - $tag_text .= ','; - } - - if (empty($tag['href'])) { - //$tag['href'] - logger('Blubb!'); - } - - $tag_text .= substr($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; - $item['object-type'] = ACTIVITY_OBJ_COMMENT; - } - - if (($activity['uri'] != $activity['reply-to-uri']) && !Item::exists(['uri' => $activity['reply-to-uri']])) { - logger('Parent ' . $activity['reply-to-uri'] . ' not found. Try to refetch it.'); - self::fetchMissingActivity($activity['reply-to-uri'], $activity); - } - - self::postItem($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) - { - /// @todo What to do with $activity['context']? - - $item['network'] = Protocol::ACTIVITYPUB; - $item['private'] = !in_array(0, $activity['receiver']); - $item['author-id'] = Contact::getIdForURL($activity['author'], 0, true); - $item['owner-id'] = Contact::getIdForURL($activity['owner'], 0, true); - $item['uri'] = $activity['uri']; - $item['created'] = $activity['published']; - $item['edited'] = $activity['updated']; - $item['guid'] = $activity['uuid']; - $item['title'] = HTML::toBBCode($activity['name']); - $item['content-warning'] = HTML::toBBCode($activity['summary']); - $item['body'] = self::convertMentions(HTML::toBBCode($activity['content'])); - $item['location'] = $activity['location']; - $item['tag'] = self::constructTagList($activity['tags'], $activity['sensitive']); - $item['app'] = $activity['service']; - $item['plink'] = defaults($activity, 'alternate-url', $item['uri']); - - $item = self::constructAttachList($activity['attachments'], $item); - - $source = JsonLD::fetchElement($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'], $receiver, true); - - if (($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'] . ': ' . $item_id); - } - } - - private static function fetchMissingActivity($url, $child) - { - $object = ActivityPub::fetchContent($url); - if (empty($object)) { - logger('Activity ' . $url . ' was not fetchable, aborting.'); - return; - } - - $activity = []; - $activity['@context'] = $object['@context']; - unset($object['@context']); - $activity['id'] = $object['id']; - $activity['to'] = defaults($object, 'to', []); - $activity['cc'] = defaults($object, 'cc', []); - $activity['actor'] = $child['author']; - $activity['object'] = $object; - $activity['published'] = $object['published']; - $activity['type'] = 'Create'; - - self::processActivity($activity); - logger('Activity ' . $url . ' had been fetched and processed.'); - } - - private static function getUserOfObject($object) - { - $self = DBA::selectFirst('contact', ['uid'], ['nurl' => normalise_link($object), 'self' => true]); - if (!DBA::isResult($self)) { - return false; - } else { - return $self['uid']; - } - } - - private static function followUser($activity) - { - $uid = self::getUserOfObject($activity['object']); - if (empty($uid)) { - return; - } - - $owner = User::getOwnerDataById($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; + $ldactivity = JsonLD::compact($activity); + ActivityPub\Receiver::processActivity($ldactivity, '', $uid, true); } - - $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) - { - $uid = self::getUserOfObject($activity['object']); - if (empty($uid)) { - return; - } - - $owner = User::getOwnerDataById($uid); - - $cid = Contact::getIdForURL($activity['owner'], $uid); - if (empty($cid)) { - logger('No contact found for ' . $activity['owner'], LOGGER_DEBUG); - return; - } - - $fields = ['pending' => false]; - - $contact = DBA::selectFirst('contact', ['rel'], ['id' => $cid]); - if ($contact['rel'] == Contact::FOLLOWER) { - $fields['rel'] = Contact::FRIEND; - } - - $condition = ['id' => $cid]; - DBA::update('contact', $fields, $condition); - logger('Accept contact request from contact ' . $cid . ' for user ' . $uid, LOGGER_DEBUG); - } - - private static function undoFollowUser($activity) - { - $uid = self::getUserOfObject($activity['object']); - if (empty($uid)) { - return; - } - - $owner = User::getOwnerDataById($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); } }