*
* 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
*
* To-do:
*
* Receiver:
- * - Activities: Dislike, Update, Delete
+ * - Activities: Update, Delete (Activities/Notes)
* - Object Types: Person, Tombstome
*
* Transmitter:
- * - Activities: Like, Dislike, Update, Delete
- * - Object Tyoes: Article, Announce, Person, Tombstone
+ * - Activities: Announce
+ * - Object Tyoes: Person
*
* General:
- * - Message distribution
- * - Endpoints: Outbox, Object, Follower, Following
+ * - Endpoints: Outbox, Follower, Following
* - General cleanup
+ * - Queueing unsucessful deliveries
*/
class ActivityPub
{
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['author-link']);
+ $exclude[] = $item['author-link'];
+
+ if ($item['gravity'] == GRAVITY_PARENT) {
+ $exclude[] = $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 = $item_profile['followers'];
+ }
+ if (!in_array($receiver, $exclude)) {
+ $permissions[$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;
- $data['cc'][] = System::baseUrl() . '/followers/' . $item['author-nick'];
+ if (!empty($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($profile)) {
+ if (!empty($profile) && empty($contacts[$profile['url']])) {
$data['cc'][] = $profile['url'];
+ $contacts[$profile['url']] = $profile['url'];
}
}
} else {
- //$data['cc'][] = System::baseUrl() . '/followers/' . $item['author-nick'];
$receiver_list = Item::enumeratePermissions($item);
$mentioned = [];
if (!empty($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]);
- $data['cc'][] = $contact['url'];
+ if (empty($contacts[$contact['url']])) {
+ $data['cc'][] = $contact['url'];
+ $contacts[$contact['url']] = $contact['url'];
+ }
+ }
+ }
+
+ $parents = Item::select(['author-link', 'owner-link', 'gravity'], ['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']] = $profile['url'];
+ }
+
+ if ($item['gravity'] != GRAVITY_PARENT) {
+ continue;
}
- if (empty($data['to'])) {
- $data['to'] = $data['cc'];
- $data['cc'] = [];
+ $profile = self::fetchprofile($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)
+ public static function fetchTargetInboxes($item, $uid)
{
- $inboxes = [];
+ $permissions = self::createPermissionBlockForItem($item);
+ if (empty($permissions)) {
+ return [];
+ }
- $terms = Term::tagArrayFromItemId($item['id']);
- if (!$item['private']) {
- $contacts = DBA::select('contact', ['notify', 'batch'], ['uid' => $item['uid'],
- 'rel' => [Contact::FOLLOWER, Contact::FRIEND], 'network' => Protocol::ACTIVITYPUB]);
- while ($contact = DBA::fetch($contacts)) {
- $contact = defaults($contact, 'batch', $contact['notify']);
- $inboxes[$contact] = $contact;
- }
- DBA::close($contacts);
+ $inboxes = [];
- foreach ($terms as $term) {
- if ($term['type'] != TERM_MENTION) {
- continue;
- }
- $profile = self::fetchprofile($term['url']);
- if (!empty($profile)) {
- $target = defaults($profile, 'sharedinbox', $profile['inbox']);
- $inboxes[$target] = $target;
- }
- }
+ if ($item['gravity'] == GRAVITY_ACTIVITY) {
+ $item_profile = ActivityPub::fetchprofile($item['author-link']);
} else {
- $receiver_list = Item::enumeratePermissions($item);
+ $item_profile = ActivityPub::fetchprofile($item['owner-link']);
+ }
- $mentioned = [];
+ $elements = ['to', 'cc', 'bto', 'bcc'];
+ foreach ($elements as $element) {
+ if (empty($permissions[$element])) {
+ continue;
+ }
- foreach ($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]);
- $profile = self::fetchprofile($contact['url']);
- if (!empty($profile['network'])) {
+ foreach ($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] = $target;
}
}
}
-
- foreach ($receiver_list as $receiver) {
- $contact = DBA::selectFirst('contact', ['url'], ['id' => $receiver, 'network' => Protocol::ACTIVITYPUB]);
- $profile = self::fetchprofile($contact['url']);
- if (!empty($profile['network'])) {
- $target = defaults($profile, 'sharedinbox', $profile['inbox']);
- $inboxes[$target] = $target;
- }
- }
}
- $profile = self::fetchprofile($item['author-link']);
- if (!empty($profile['sharedinbox'])) {
- unset($inboxes[$profile['sharedinbox']]);
- }
+ return $inboxes;
+ }
- if (!empty($profile['inbox'])) {
- unset($inboxes[$profile['inbox']]);
+ public static function getTypeOfItem($item)
+ {
+ if ($item['verb'] == ACTIVITY_POST) {
+ if ($item['created'] == $item['edited']) {
+ $type = 'Create';
+ } else {
+ $type = 'Update';
+ }
+ } elseif ($item['verb'] == ACTIVITY_LIKE) {
+ $type = 'Like';
+ } elseif ($item['verb'] == ACTIVITY_DISLIKE) {
+ $type = 'Dislike';
+ } elseif ($item['verb'] == ACTIVITY_ATTEND) {
+ $type = 'Accept';
+ } elseif ($item['verb'] == ACTIVITY_ATTENDNO) {
+ $type = 'Reject';
+ } elseif ($item['verb'] == ACTIVITY_ATTENDMAYBE) {
+ $type = 'TentativeAccept';
+ } else {
+ $type = '';
}
- return $inboxes;
+ return $type;
}
- public static function createActivityFromItem($item_id)
+ public static function createActivityFromItem($item_id, $object_mode = false)
{
$item = Item::selectFirst([], ['id' => $item_id]);
}
}
- $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']]];
+ $type = self::getTypeOfItem($item);
+
+ if (!$object_mode) {
+ $data = ['@context' => ['https://www.w3.org/ns/activitystreams', 'https://w3id.org/security/v1',
+ ['ostatus' => 'http://ostatus.org#', 'uuid' => 'http://schema.org/identifier',
+ 'sensitive' => 'as:sensitive', 'Hashtag' => 'as:Hashtag',
+ 'atomUri' => 'ostatus:atomUri', 'conversation' => 'ostatus:conversation',
+ 'inReplyToAtomUri' => 'ostatus:inReplyToAtomUri']]];
- $data['type'] = 'Create';
- $data['id'] = $item['uri'] . '#activity';
+ if ($item['deleted'] && ($item['gravity'] == GRAVITY_ACTIVITY)) {
+ $type = 'Undo';
+ } elseif ($item['deleted']) {
+ $type = 'Delete';
+ }
+ } else {
+ $data = [];
+ }
+
+ $data['id'] = $item['uri'] . '#' . $type;
+ $data['type'] = $type;
$data['actor'] = $item['author-link'];
$data['published'] = DateTimeFormat::utc($item["created"]."+00:00", DateTimeFormat::ATOM);
$data['updated'] = DateTimeFormat::utc($item["edited"]."+00:00", DateTimeFormat::ATOM);
}
+ $data['context'] = self::createConversationURLFromItem($item);
+
$data = array_merge($data, ActivityPub::createPermissionBlockForItem($item));
- $data['object'] = self::createNote($item);
+ if (in_array($data['type'], ['Create', 'Update', 'Announce', 'Delete'])) {
+ $data['object'] = self::CreateNote($item);
+ } elseif ($data['type'] == 'Undo') {
+ $data['object'] = self::createActivityFromItem($item_id, true);
+ } else {
+ $data['object'] = $item['thr-parent'];
+ }
$owner = User::getOwnerDataById($item['uid']);
- return LDSignature::sign($data, $owner);
+ if (!$object_mode) {
+ return LDSignature::sign($data, $owner);
+ } else {
+ return $data;
+ }
}
public static function createObjectFromItemID($item_id)
}
$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',
+ ['ostatus' => 'http://ostatus.org#', 'uuid' => 'http://schema.org/identifier',
+ 'sensitive' => 'as:sensitive', 'Hashtag' => 'as:Hashtag',
+ 'atomUri' => 'ostatus:atomUri', 'conversation' => 'ostatus:conversation',
'inReplyToAtomUri' => 'ostatus:inReplyToAtomUri']]];
- $data = array_merge($data, self::createNote($item));
+ $data = array_merge($data, self::CreateNote($item));
return $data;
$tags[] = ['type' => 'Mention', 'href' => $term['url'], 'name' => $mention];
}
}
-
return $tags;
}
- public static function createNote($item)
+ 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 $conversation_uri;
+ }
+
+ private static function CreateNote($item)
{
+ if (!empty($item['title'])) {
+ $type = 'Article';
+ } else {
+ $type = 'Note';
+ }
+
+ if ($item['deleted']) {
+ $type = 'Tombstone';
+ }
+
$data = [];
- $data['type'] = 'Note';
$data['id'] = $item['uri'];
+ $data['type'] = $type;
- if ($item['uri'] != $item['thr-parent']) {
- $data['inReplyTo'] = $item['thr-parent'];
+ if ($item['deleted']) {
+ return $data;
}
- $conversation = DBA::selectFirst('conversation', ['conversation-uri'], ['item-uri' => $item['parent-uri']]);
- if (DBA::isResult($conversation) && !empty($conversation['conversation-uri'])) {
- $conversation_uri = $conversation['conversation-uri'];
+ $data['summary'] = null; // Ignore by now
+
+ if ($item['uri'] != $item['thr-parent']) {
+ $data['inReplyTo'] = $item['thr-parent'];
} else {
- $conversation_uri = $item['parent-uri'];
+ $data['inReplyTo'] = null;
}
- $data['context'] = $data['conversation'] = $conversation_uri;
- $data['actor'] = $item['author-link'];
- $data = array_merge($data, ActivityPub::createPermissionBlockForItem($item));
+ $data['uuid'] = $item['guid'];
$data['published'] = DateTimeFormat::utc($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'];
- $data['name'] = BBCode::convert($item['title'], false, 7);
+ $data['actor'] = $item['author-link'];
+ $data['sensitive'] = false; // - Query NSFW
+ $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['summary'] = ''; // Ignore by now
- $data['sensitive'] = false; // - Query NSFW
- //$data['emoji'] = []; // Ignore by now
- $data['tag'] = self::createTagList($item);
$data['attachment'] = []; // @ToDo
+ $data['tag'] = self::createTagList($item);
+ $data = array_merge($data, ActivityPub::createPermissionBlockForItem($item));
+
+ //$data['emoji'] = []; // Ignore by now
return $data;
}
public static function processInbox($body, $header, $uid)
{
- logger('Incoming message for user ' . $uid, LOGGER_DEBUG);
-
- if (!HTTPSignature::verifyAP($body, $header)) {
- logger('Invalid signature, message will be discarded.', LOGGER_DEBUG);
+ $http_signer = HTTPSignature::getSigner($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);
- if (!is_array($activity)) {
+ $actor = JsonLD::fetchElement($activity, 'actor', 'id');
+ logger('Message for user ' . $uid . ' is from actor ' . $actor, LOGGER_DEBUG);
+
+ if (empty($activity)) {
logger('Invalid body.', LOGGER_DEBUG);
return;
}
- self::processActivity($activity, $body, $uid);
+ if (LDSignature::isSigned($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, $trust_source);
}
public static function fetchOutbox($url, $uid)
}
foreach ($items as $activity) {
- self::processActivity($activity, '', $uid);
+ self::processActivity($activity, '', $uid, true);
}
}
- private static function prepareObjectData($activity, $uid)
+ private static function prepareObjectData($activity, $uid, $trust_source)
{
$actor = JsonLD::fetchElement($activity, 'actor', 'id');
if (empty($actor)) {
logger('Receivers: ' . json_encode($receivers), LOGGER_DEBUG);
- $unsigned = true;
-
- if (LDSignature::isSigned($activity)) {
- if (!LDSignature::isVerified($activity)) {
- logger('Invalid signature. Quitting here.', LOGGER_DEBUG);
- return [];
- }
- logger('Valid signature.', LOGGER_DEBUG);
- $unsigned = false;
- } elseif (!in_array(0, $receivers)) {
- /// @todo Add some checks to only accept unsigned private posts directly from the actor
- $unsigned = false;
- logger('Private post without signature.', LOGGER_DEBUG);
- } else {
- logger('Public post without signature. Object data will be fetched.', LOGGER_DEBUG);
- }
-
if (is_string($activity['object'])) {
$object_url = $activity['object'];
} elseif (!empty($activity['object']['id'])) {
// 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'], $unsigned);
+ $object_data = self::fetchObject($object_url, $activity['object'], $trust_source);
if (empty($object_data)) {
logger("Object data couldn't be processed", LOGGER_DEBUG);
return [];
return $object_data;
}
- private static function processActivity($activity, $body = '', $uid = null)
+ private static function processActivity($activity, $body = '', $uid = null, $trust_source = false)
{
if (empty($activity['type'])) {
logger('Empty type', LOGGER_DEBUG);
logger('Processing activity: ' . $activity['type'], LOGGER_DEBUG);
- $object_data = self::prepareObjectData($activity, $uid);
+ $object_data = self::prepareObjectData($activity, $uid, $trust_source);
if (empty($object_data)) {
logger('No object data found', LOGGER_DEBUG);
return;
break;
case 'Dislike':
+ self::dislikeItem($object_data, $body);
break;
case 'Update':
return $object_data;
}
- private static function fetchObject($object_url, $object = [], $unsigned = true)
+ private static function fetchObject($object_url, $object = [], $trust_source = false)
{
- if ($unsigned) {
+ 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;
- $data = $object;
+ } else {
+ logger('Fetched content for ' . $object_url, LOGGER_DEBUG);
}
} else {
logger('Using original object for url ' . $object_url, LOGGER_DEBUG);
return false;
}
logger('Using already stored item for url ' . $object_url, LOGGER_DEBUG);
- $data = self::createNote($item);
+ $data = self::CreateNote($item);
}
if (empty($data['type'])) {
self::postItem($activity, $item, $body);
}
+ private static function dislikeItem($activity, $body)
+ {
+ $item = [];
+ $item['verb'] = ACTIVITY_DISLIKE;
+ $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']?
projects / friendica.git / blobdiff