Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
/**
* @file src/Protocol/ActivityPub/Transmitter.php
*/
namespace Friendica\Protocol\ActivityPub;
use Friendica\BaseObject;
use Friendica\Content\Feature;
use Friendica\Content\Text\BBCode;
use Friendica\Content\Text\Plaintext;
use Friendica\Core\Cache;
use Friendica\Core\Config;
use Friendica\Core\Logger;
use Friendica\Core\System;
use Friendica\Protocol\Activity;
use Friendica\Util\HTTPSignature;
use Friendica\Core\Protocol;
use Friendica\Core\System;
use Friendica\Database\DBA;
use Friendica\Model\APContact;
use Friendica\Model\Contact;
use Friendica\Model\Conversation;
use Friendica\Model\Item;
use Friendica\Model\Profile;
use Friendica\Model\Term;
use Friendica\Model\User;
use Friendica\Protocol\ActivityPub;
use Friendica\Util\DateTimeFormat;
use Friendica\Util\HTTPSignature;
use Friendica\Util\Images;
use Friendica\Util\JsonLD;
use Friendica\Util\LDSignature;
use Friendica\Util\Map;
use Friendica\Util\Network;
use Friendica\Util\XML;
require_once 'include/api.php';
require_once 'mod/share.php';
/**
* @brief ActivityPub Transmitter Protocol class
*
* To-Do:
* - Undo Announce
*/
class Transmitter
{
/**
* collects the lost of followers of the given owner
*
* @param array $owner Owner array
* @param integer $page Page number
*
* @return array of owners
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function getFollowers($owner, $page = null)
{
$condition = ['rel' => [Contact::FOLLOWER, Contact::FRIEND], 'network' => Protocol::NATIVE_SUPPORT, 'uid' => $owner['uid'],
'self' => false, 'deleted' => false, 'hidden' => false, 'archive' => false, 'pending' => false];
$count = DBA::count('contact', $condition);
$data = ['@context' => ActivityPub::CONTEXT];
$data['id'] = System::baseUrl() . '/followers/' . $owner['nickname'];
$data['type'] = 'OrderedCollection';
$data['totalItems'] = $count;
// When we hide our friends we will only show the pure number but don't allow more.
$profile = Profile::getByUID($owner['uid']);
if (!empty($profile['hide-friends'])) {
return $data;
}
if (empty($page)) {
$data['first'] = System::baseUrl() . '/followers/' . $owner['nickname'] . '?page=1';
} else {
$data['type'] = 'OrderedCollectionPage';
$list = [];
$contacts = DBA::select('contact', ['url'], $condition, ['limit' => [($page - 1) * 100, 100]]);
while ($contact = DBA::fetch($contacts)) {
$list[] = $contact['url'];
}
if (!empty($list)) {
$data['next'] = System::baseUrl() . '/followers/' . $owner['nickname'] . '?page=' . ($page + 1);
}
$data['partOf'] = System::baseUrl() . '/followers/' . $owner['nickname'];
$data['orderedItems'] = $list;
}
return $data;
}
/**
* Create list of following contacts
*
* @param array $owner Owner array
* @param integer $page Page numbe
*
* @return array of following contacts
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function getFollowing($owner, $page = null)
{
$condition = ['rel' => [Contact::SHARING, Contact::FRIEND], 'network' => Protocol::NATIVE_SUPPORT, 'uid' => $owner['uid'],
'self' => false, 'deleted' => false, 'hidden' => false, 'archive' => false, 'pending' => false];
$count = DBA::count('contact', $condition);
$data = ['@context' => ActivityPub::CONTEXT];
$data['id'] = System::baseUrl() . '/following/' . $owner['nickname'];
$data['type'] = 'OrderedCollection';
$data['totalItems'] = $count;
// When we hide our friends we will only show the pure number but don't allow more.
$profile = Profile::getByUID($owner['uid']);
if (!empty($profile['hide-friends'])) {
return $data;
}
if (empty($page)) {
$data['first'] = System::baseUrl() . '/following/' . $owner['nickname'] . '?page=1';
} else {
$data['type'] = 'OrderedCollectionPage';
$list = [];
$contacts = DBA::select('contact', ['url'], $condition, ['limit' => [($page - 1) * 100, 100]]);
while ($contact = DBA::fetch($contacts)) {
$list[] = $contact['url'];
}
if (!empty($list)) {
$data['next'] = System::baseUrl() . '/following/' . $owner['nickname'] . '?page=' . ($page + 1);
}
$data['partOf'] = System::baseUrl() . '/following/' . $owner['nickname'];
$data['orderedItems'] = $list;
}
return $data;
}
/**
* Public posts for the given owner
*
* @param array $owner Owner array
* @param integer $page Page numbe
*
* @return array of posts
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function getOutbox($owner, $page = null)
{
$public_contact = Contact::getIdForURL($owner['url'], 0, true);
$condition = ['uid' => 0, 'contact-id' => $public_contact, 'author-id' => $public_contact,
'private' => false, 'gravity' => [GRAVITY_PARENT, GRAVITY_COMMENT],
'deleted' => false, 'visible' => true, 'moderated' => false];
$count = DBA::count('item', $condition);
$data = ['@context' => ActivityPub::CONTEXT];
$data['id'] = System::baseUrl() . '/outbox/' . $owner['nickname'];
$data['type'] = 'OrderedCollection';
$data['totalItems'] = $count;
if (empty($page)) {
$data['first'] = System::baseUrl() . '/outbox/' . $owner['nickname'] . '?page=1';
} else {
$data['type'] = 'OrderedCollectionPage';
$list = [];
$condition['parent-network'] = Protocol::NATIVE_SUPPORT;
$items = Item::select(['id'], $condition, ['limit' => [($page - 1) * 20, 20], 'order' => ['created' => true]]);
while ($item = Item::fetch($items)) {
$object = self::createObjectFromItemID($item['id']);
unset($object['@context']);
$list[] = $object;
}
if (!empty($list)) {
$data['next'] = System::baseUrl() . '/outbox/' . $owner['nickname'] . '?page=' . ($page + 1);
}
$data['partOf'] = System::baseUrl() . '/outbox/' . $owner['nickname'];
$data['orderedItems'] = $list;
}
return $data;
}
/**
* Return the service array containing information the used software and it's url
*
* @return array with service data
*/
private static function getService()
{
return ['type' => 'Service',
'name' => FRIENDICA_PLATFORM . " '" . FRIENDICA_CODENAME . "' " . FRIENDICA_VERSION . '-' . DB_UPDATE_VERSION,
'url' => BaseObject::getApp()->getBaseURL()];
}
/**
* Return the ActivityPub profile of the given user
*
* @param integer $uid User ID
* @return array with profile data
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function getProfile($uid)
{
$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', 'photo'];
$contact = DBA::selectFirst('contact', $fields, ['uid' => $uid, 'self' => true]);
if (!DBA::isResult($contact)) {
return [];
}
$data = ['@context' => ActivityPub::CONTEXT];
$data['id'] = $contact['url'];
$data['diaspora:guid'] = $user['guid'];
$data['type'] = ActivityPub::ACCOUNT_TYPES[$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'], [User::PAGE_FLAGS_NORMAL, User::PAGE_FLAGS_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['photo']];
$data['generator'] = self::getService();
// tags: https://kitty.town/@inmysocks/100656097926961126.json
return $data;
}
/**
* @param string $username
* @return array
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function getDeletedUser($username)
{
return [
'@context' => ActivityPub::CONTEXT,
'id' => System::baseUrl() . '/profile/' . $username,
'type' => 'Tombstone',
'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
'updated' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
'deleted' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
];
}
/**
* Returns an array with permissions of a given item array
*
* @param array $item
*
* @return array with permissions
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
private static function fetchPermissionBlockFromConversation($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');
$profile = APContact::getByURL($actor);
$item_profile = APContact::getByURL($item['author-link']);
$exclude[] = $item['author-link'];
if ($item['gravity'] == GRAVITY_PARENT) {
$exclude[] = $item['owner-link'];
}
$permissions['to'][] = $actor;
foreach (['to', 'cc', 'bto', 'bcc'] 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'])) {
$permissions[$element][] = $item_profile['followers'];
} elseif (!in_array($receiver, $exclude)) {
$permissions[$element][] = $receiver;
}
}
}
return $permissions;
}
/**
* Creates an array of permissions from an item thread
*
* @param array $item Item array
* @param boolean $blindcopy addressing via "bcc" or "cc"?
* @param integer $last_id Last item id for adding receivers
* @param boolean $forum_mode "true" means that we are sending content to a forum
*
* @return array with permission data
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
private static function createPermissionBlockForItem($item, $blindcopy, $last_id = 0, $forum_mode = false)
{
if ($last_id == 0) {
$last_id = $item['id'];
}
$always_bcc = false;
// Check if we should always deliver our stuff via BCC
if (!empty($item['uid'])) {
$profile = Profile::getByUID($item['uid']);
if (!empty($profile)) {
$always_bcc = $profile['hide-friends'];
}
}
if (Config::get('debug', 'total_ap_delivery')) {
// Will be activated in a later step
$networks = Protocol::FEDERATED;
} else {
// For now only send to these contacts:
$networks = [Protocol::ACTIVITYPUB, Protocol::OSTATUS];
}
$data = ['to' => [], 'cc' => [], 'bcc' => []];
if ($item['gravity'] == GRAVITY_PARENT) {
$actor_profile = APContact::getByURL($item['owner-link']);
} else {
$actor_profile = APContact::getByURL($item['author-link']);
}
$terms = Term::tagArrayFromItemId($item['id'], [Term::MENTION, Term::IMPLICIT_MENTION]);
if (!$item['private']) {
$data = array_merge($data, self::fetchPermissionBlockFromConversation($item));
$data['to'][] = ActivityPub::PUBLIC_COLLECTION;
foreach ($terms as $term) {
$profile = APContact::getByURL($term['url'], false);
if (!empty($profile)) {
$data['to'][] = $profile['url'];
}
}
} else {
$receiver_list = Item::enumeratePermissions($item, true);
foreach ($terms as $term) {
$cid = Contact::getIdForURL($term['url'], $item['uid']);
if (!empty($cid) && in_array($cid, $receiver_list)) {
$contact = DBA::selectFirst('contact', ['url', 'network', 'protocol'], ['id' => $cid]);
if (!DBA::isResult($contact) || (!in_array($contact['network'], $networks) && ($contact['protocol'] != Protocol::ACTIVITYPUB))) {
continue;
}
if (!empty($profile = APContact::getByURL($contact['url'], false))) {
$data['to'][] = $profile['url'];
}
}
}
foreach ($receiver_list as $receiver) {
$contact = DBA::selectFirst('contact', ['url', 'hidden', 'network', 'protocol'], ['id' => $receiver]);
if (!DBA::isResult($contact) || (!in_array($contact['network'], $networks) && ($contact['protocol'] != Protocol::ACTIVITYPUB))) {
continue;
}
if (!empty($profile = APContact::getByURL($contact['url'], false))) {
if ($contact['hidden'] || $always_bcc) {
$data['bcc'][] = $profile['url'];
} else {
$data['cc'][] = $profile['url'];
}
}
}
}
if (!empty($item['parent'])) {
$parents = Item::select(['id', 'author-link', 'owner-link', 'gravity', 'uri'], ['parent' => $item['parent']]);
while ($parent = Item::fetch($parents)) {
if ($parent['gravity'] == GRAVITY_PARENT) {
$profile = APContact::getByURL($parent['owner-link'], false);
if (!empty($profile)) {
if ($item['gravity'] != GRAVITY_PARENT) {
// Comments to forums are directed to the forum
// But comments to forums aren't directed to the followers collection
if ($profile['type'] == 'Group') {
$data['to'][] = $profile['url'];
} else {
$data['cc'][] = $profile['url'];
if (!$item['private'] && !empty($actor_profile['followers'])) {
$data['cc'][] = $actor_profile['followers'];
}
}
} else {
// Public thread parent post always are directed to the followers
if (!$item['private'] && !$forum_mode) {
$data['cc'][] = $actor_profile['followers'];
}
}
}
}
// Don't include data from future posts
if ($parent['id'] >= $last_id) {
continue;
}
$profile = APContact::getByURL($parent['author-link'], false);
if (!empty($profile)) {
if (($profile['type'] == 'Group') || ($parent['uri'] == $item['thr-parent'])) {
$data['to'][] = $profile['url'];
} else {
$data['cc'][] = $profile['url'];
}
}
}
DBA::close($parents);
}
$data['to'] = array_unique($data['to']);
$data['cc'] = array_unique($data['cc']);
$data['bcc'] = array_unique($data['bcc']);
if (($key = array_search($item['author-link'], $data['to'])) !== false) {
unset($data['to'][$key]);
}
if (($key = array_search($item['author-link'], $data['cc'])) !== false) {
unset($data['cc'][$key]);
}
if (($key = array_search($item['author-link'], $data['bcc'])) !== false) {
unset($data['bcc'][$key]);
}
foreach ($data['to'] as $to) {
if (($key = array_search($to, $data['cc'])) !== false) {
unset($data['cc'][$key]);
}
if (($key = array_search($to, $data['bcc'])) !== false) {
unset($data['bcc'][$key]);
}
}
foreach ($data['cc'] as $cc) {
if (($key = array_search($cc, $data['bcc'])) !== false) {
unset($data['bcc'][$key]);
}
}
$receivers = ['to' => array_values($data['to']), 'cc' => array_values($data['cc']), 'bcc' => array_values($data['bcc'])];
if (!$blindcopy) {
unset($receivers['bcc']);
}
return $receivers;
}
/**
* Check if an inbox is archived
*
* @param string $url Inbox url
*
* @return boolean "true" if inbox is archived
*/
private static function archivedInbox($url)
{
return DBA::exists('inbox-status', ['url' => $url, 'archive' => true]);
}
/**
* Fetches a list of inboxes of followers of a given user
*
* @param integer $uid User ID
* @param boolean $personal fetch personal inboxes
*
* @return array of follower inboxes
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function fetchTargetInboxesforUser($uid, $personal = false)
{
$inboxes = [];
if (Config::get('debug', 'total_ap_delivery')) {
// Will be activated in a later step
$networks = Protocol::FEDERATED;
} else {
// For now only send to these contacts:
$networks = [Protocol::ACTIVITYPUB, Protocol::OSTATUS];
}
$condition = ['uid' => $uid, 'archive' => false, 'pending' => false];
if (!empty($uid)) {
$condition['rel'] = [Contact::FOLLOWER, Contact::FRIEND];
}
$contacts = DBA::select('contact', ['url', 'network', 'protocol'], $condition);
while ($contact = DBA::fetch($contacts)) {
if (Contact::isLocal($contact['url'])) {
continue;
}
if (!in_array($contact['network'], $networks) && ($contact['protocol'] != Protocol::ACTIVITYPUB)) {
continue;
}
if (Network::isUrlBlocked($contact['url'])) {
continue;
}
$profile = APContact::getByURL($contact['url'], false);
if (!empty($profile)) {
if (empty($profile['sharedinbox']) || $personal) {
$target = $profile['inbox'];
} else {
$target = $profile['sharedinbox'];
}
if (!self::archivedInbox($target)) {
$inboxes[$target] = $target;
}
}
}
DBA::close($contacts);
return $inboxes;
}
/**
* Fetches an array of inboxes for the given item and user
*
* @param array $item Item array
* @param integer $uid User ID
* @param boolean $personal fetch personal inboxes
* @param integer $last_id Last item id for adding receivers
* @param boolean $forum_mode "true" means that we are sending content to a forum
* @return array with inboxes
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function fetchTargetInboxes($item, $uid, $personal = false, $last_id = 0, $forum_mode = false)
{
$permissions = self::createPermissionBlockForItem($item, true, $last_id, $forum_mode);
if (empty($permissions)) {
return [];
}
$inboxes = [];
if ($item['gravity'] == GRAVITY_ACTIVITY) {
$item_profile = APContact::getByURL($item['author-link'], false);
} else {
$item_profile = APContact::getByURL($item['owner-link'], false);
}
foreach (['to', 'cc', 'bto', 'bcc'] as $element) {
if (empty($permissions[$element])) {
continue;
}
$blindcopy = in_array($element, ['bto', 'bcc']);
foreach ($permissions[$element] as $receiver) {
if (Network::isUrlBlocked($receiver)) {
continue;
}
if ($receiver == $item_profile['followers']) {
$inboxes = array_merge($inboxes, self::fetchTargetInboxesforUser($uid, $personal));
} else {
if (Contact::isLocal($receiver)) {
continue;
}
$profile = APContact::getByURL($receiver, false);
if (!empty($profile)) {
if (empty($profile['sharedinbox']) || $personal || $blindcopy) {
$target = $profile['inbox'];
} else {
$target = $profile['sharedinbox'];
}
if (!self::archivedInbox($target)) {
$inboxes[$target] = $target;
}
}
}
}
}
return $inboxes;
}
/**
* Creates an array in the structure of the item table for a given mail id
*
* @param integer $mail_id
*
* @return array
* @throws \Exception
*/
public static function ItemArrayFromMail($mail_id)
{
$mail = DBA::selectFirst('mail', [], ['id' => $mail_id]);
$reply = DBA::selectFirst('mail', ['uri'], ['parent-uri' => $mail['parent-uri'], 'reply' => false]);
// Making the post more compatible for Mastodon by:
// - Making it a note and not an article (no title)
// - Moving the title into the "summary" field that is used as a "content warning"
$mail['body'] = '[abstract]' . $mail['title'] . "[/abstract]\n" . $mail['body'];
$mail['title'] = '';
$mail['author-link'] = $mail['owner-link'] = $mail['from-url'];
$mail['allow_cid'] = '<'.$mail['contact-id'].'>';
$mail['allow_gid'] = '';
$mail['deny_cid'] = '';
$mail['deny_gid'] = '';
$mail['private'] = true;
$mail['deleted'] = false;
$mail['edited'] = $mail['created'];
$mail['plink'] = $mail['uri'];
$mail['thr-parent'] = $reply['uri'];
$mail['gravity'] = ($mail['reply'] ? GRAVITY_COMMENT: GRAVITY_PARENT);
$mail['event-type'] = '';
$mail['attach'] = '';
$mail['parent'] = 0;
return $mail;
}
/**
* Creates an activity array for a given mail id
*
* @param integer $mail_id
* @param boolean $object_mode Is the activity item is used inside another object?
*
* @return array of activity
* @throws \Exception
*/
public static function createActivityFromMail($mail_id, $object_mode = false)
{
$mail = self::ItemArrayFromMail($mail_id);
$object = self::createNote($mail);
$object['to'] = $object['cc'];
unset($object['cc']);
$object['tag'] = [['type' => 'Mention', 'href' => $object['to'][0], 'name' => 'test']];
if (!$object_mode) {
$data = ['@context' => ActivityPub::CONTEXT];
} else {
$data = [];
}
$data['id'] = $mail['uri'] . '#Create';
$data['type'] = 'Create';
$data['actor'] = $mail['author-link'];
$data['published'] = DateTimeFormat::utc($mail['created'] . '+00:00', DateTimeFormat::ATOM);
$data['instrument'] = self::getService();
$data = array_merge($data, self::createPermissionBlockForItem($mail, true));
if (empty($data['to']) && !empty($data['cc'])) {
$data['to'] = $data['cc'];
}
if (empty($data['to']) && !empty($data['bcc'])) {
$data['to'] = $data['bcc'];
}
unset($data['cc']);
unset($data['bcc']);
$object['to'] = $data['to'];
unset($object['cc']);
unset($object['bcc']);
$data['directMessage'] = true;
$data['object'] = $object;
$owner = User::getOwnerDataById($mail['uid']);
if (!$object_mode && !empty($owner)) {
return LDSignature::sign($data, $owner);
} else {
return $data;
}
}
/**
* Returns the activity type of a given item
*
* @param array $item
*
* @return string with activity type
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
private static function getTypeOfItem($item)
{
$reshared = false;
// Only check for a reshare, if it is a real reshare and no quoted reshare
if (strpos($item['body'], "[share") === 0) {
$announce = api_share_as_retweet($item);
$reshared = !empty($announce['plink']);
}
if ($reshared) {
$type = 'Announce';
} elseif ($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) {
$type = 'TentativeAccept';
} elseif ($item['verb'] == Activity::FOLLOW) {
$type = 'Follow';
} elseif ($item['verb'] == Activity::TAG) {
$type = 'Add';
} else {
$type = '';
}
return $type;
}
/**
* Creates the activity or fetches it from the cache
*
* @param integer $item_id
* @param boolean $force Force new cache entry
*
* @return array with the activity
* @throws \Exception
*/
public static function createCachedActivityFromItem($item_id, $force = false)
{
$cachekey = 'APDelivery:createActivity:' . $item_id;
if (!$force) {
$data = Cache::get($cachekey);
if (!is_null($data)) {
return $data;
}
}
$data = ActivityPub\Transmitter::createActivityFromItem($item_id);
Cache::set($cachekey, $data, Cache::QUARTER_HOUR);
return $data;
}
/**
* Creates an activity array for a given item id
*
* @param integer $item_id
* @param boolean $object_mode Is the activity item is used inside another object?
*
* @return array of activity
* @throws \Exception
*/
public static function createActivityFromItem($item_id, $object_mode = false)
{
$item = Item::selectFirst([], ['id' => $item_id, 'parent-network' => Protocol::NATIVE_SUPPORT]);
if (!DBA::isResult($item)) {
return false;
}
if ($item['wall'] && ($item['uri'] == $item['parent-uri'])) {
$owner = User::getOwnerDataById($item['uid']);
if (($owner['account-type'] == User::ACCOUNT_TYPE_COMMUNITY) && ($item['author-link'] != $owner['url'])) {
$type = 'Announce';
// Disguise forum posts as reshares. Will later be converted to a real announce
$item['body'] = share_header($item['author-name'], $item['author-link'], $item['author-avatar'],
$item['guid'], $item['created'], $item['plink']) . $item['body'] . '[/share]';
}
}
if (empty($type)) {
$condition = ['item-uri' => $item['uri'], 'protocol' => Conversation::PARCEL_ACTIVITYPUB];
$conversation = DBA::selectFirst('conversation', ['source'], $condition);
if (DBA::isResult($conversation)) {
$data = json_decode($conversation['source'], true);
if (!empty($data)) {
return $data;
}
}
$type = self::getTypeOfItem($item);
}
if (!$object_mode) {
$data = ['@context' => ActivityPub::CONTEXT];
if ($item['deleted'] && ($item['gravity'] == GRAVITY_ACTIVITY)) {
$type = 'Undo';
} elseif ($item['deleted']) {
$type = 'Delete';
}
} else {
$data = [];
}
$data['id'] = $item['uri'] . '#' . $type;
$data['type'] = $type;
if (Item::isForumPost($item) && ($type != 'Announce')) {
$data['actor'] = $item['author-link'];
} else {
$data['actor'] = $item['owner-link'];
}
$data['published'] = DateTimeFormat::utc($item['created'] . '+00:00', DateTimeFormat::ATOM);
$data['instrument'] = self::getService();
$data = array_merge($data, self::createPermissionBlockForItem($item, false));
if (in_array($data['type'], ['Create', 'Update', 'Delete'])) {
$data['object'] = self::createNote($item);
} elseif ($data['type'] == 'Add') {
$data = self::createAddTag($item, $data);
} elseif ($data['type'] == 'Announce') {
$data = self::createAnnounce($item, $data);
} elseif ($data['type'] == 'Follow') {
$data['object'] = $item['parent-uri'];
} elseif ($data['type'] == 'Undo') {
$data['object'] = self::createActivityFromItem($item_id, true);
} else {
$data['diaspora:guid'] = $item['guid'];
if (!empty($item['signed_text'])) {
$data['diaspora:like'] = $item['signed_text'];
}
$data['object'] = $item['thr-parent'];
}
if (!empty($item['contact-uid'])) {
$uid = $item['contact-uid'];
} else {
$uid = $item['uid'];
}
$owner = User::getOwnerDataById($uid);
if (!$object_mode && !empty($owner)) {
return LDSignature::sign($data, $owner);
} else {
return $data;
}
/// @todo Create "conversation" entry
}
/**
* Creates an object array for a given item id
*
* @param integer $item_id
*
* @return array with the object data
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function createObjectFromItemID($item_id)
{
$item = Item::selectFirst([], ['id' => $item_id, 'parent-network' => Protocol::NATIVE_SUPPORT]);
if (!DBA::isResult($item)) {
return false;
}
$data = ['@context' => ActivityPub::CONTEXT];
$data = array_merge($data, self::createNote($item));
return $data;
}
/**
* Creates a location entry for a given item array
*
* @param array $item
*
* @return array with location array
*/
private static function createLocation($item)
{
$location = ['type' => 'Place'];
if (!empty($item['location'])) {
$location['name'] = $item['location'];
}
$coord = [];
if (empty($item['coord'])) {
$coord = Map::getCoordinates($item['location']);
} else {
$coords = explode(' ', $item['coord']);
if (count($coords) == 2) {
$coord = ['lat' => $coords[0], 'lon' => $coords[1]];
}
}
if (!empty($coord['lat']) && !empty($coord['lon'])) {
$location['latitude'] = $coord['lat'];
$location['longitude'] = $coord['lon'];
}
return $location;
}
/**
* Returns a tag array for a given item array
*
* @param array $item
*
* @return array of tags
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
private static function createTagList($item)
{
$tags = [];
$terms = Term::tagArrayFromItemId($item['id'], [Term::HASHTAG, Term::MENTION, Term::IMPLICIT_MENTION]);
foreach ($terms as $term) {
if ($term['type'] == Term::HASHTAG) {
$url = System::baseUrl() . '/search?tag=' . urlencode($term['term']);
$tags[] = ['type' => 'Hashtag', 'href' => $url, 'name' => '#' . $term['term']];
} elseif ($term['type'] == Term::MENTION || $term['type'] == Term::IMPLICIT_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;
}
/**
* Adds attachment data to the JSON document
*
* @param array $item Data of the item that is to be posted
* @param string $type Object type
*
* @return array with attachment data
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
private static function createAttachmentList($item, $type)
{
$attachments = [];
$arr = explode('[/attach],', $item['attach']);
if (count($arr)) {
foreach ($arr as $r) {
$matches = false;
$cnt = preg_match('|\[attach\]href=\"(.*?)\" length=\"(.*?)\" type=\"(.*?)\" title=\"(.*?)\"|', $r, $matches);
if ($cnt) {
$attributes = ['type' => 'Document',
'mediaType' => $matches[3],
'url' => $matches[1],
'name' => null];
if (trim($matches[4]) != '') {
$attributes['name'] = trim($matches[4]);
}
$attachments[] = $attributes;
}
}
}
if ($type != 'Note') {
return $attachments;
}
// Simplify image codes
$body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $item['body']);
// Grab all pictures without alternative descriptions and create attachments out of them
if (preg_match_all("/\[img\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures)) {
foreach ($pictures[1] as $picture) {
$imgdata = Images::getInfoFromURLCached($picture);
if ($imgdata) {
$attachments[] = ['type' => 'Document',
'mediaType' => $imgdata['mime'],
'url' => $picture,
'name' => null];
}
}
}
// Grab all pictures with alternative description and create attachments out of them
if (preg_match_all("/\[img=([^\[\]]*)\]([^\[\]]*)\[\/img\]/Usi", $body, $pictures, PREG_SET_ORDER)) {
foreach ($pictures as $picture) {
$imgdata = Images::getInfoFromURLCached($picture[1]);
if ($imgdata) {
$attachments[] = ['type' => 'Document',
'mediaType' => $imgdata['mime'],
'url' => $picture[1],
'name' => $picture[2]];
}
}
}
return $attachments;
}
/**
* @brief Callback function to replace a Friendica style mention in a mention that is used on AP
*
* @param array $match Matching values for the callback
* @return string Replaced mention
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
private static function mentionCallback($match)
{
if (empty($match[1])) {
return '';
}
$data = Contact::getDetailsByURL($match[1]);
if (empty($data['nick'])) {
return $match[0];
}
return '@[url=' . $data['url'] . ']' . $data['nick'] . '[/url]';
}
/**
* Remove image elements and replaces them with links to the image
*
* @param string $body
*
* @return string with replaced elements
*/
private static function removePictures($body)
{
// Simplify image codes
$body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
$body = preg_replace("/\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]/Usi", '[url]$1[/url]', $body);
$body = preg_replace("/\[img\]([^\[\]]*)\[\/img\]/Usi", '[url]$1[/url]', $body);
return $body;
}
/**
* Fetches the "context" value for a givem item array from the "conversation" table
*
* @param array $item
*
* @return string with context url
* @throws \Exception
*/
private static function fetchContextURLForItem($item)
{
$conversation = DBA::selectFirst('conversation', ['conversation-href', 'conversation-uri'], ['item-uri' => $item['parent-uri']]);
if (DBA::isResult($conversation) && !empty($conversation['conversation-href'])) {
$context_uri = $conversation['conversation-href'];
} elseif (DBA::isResult($conversation) && !empty($conversation['conversation-uri'])) {
$context_uri = $conversation['conversation-uri'];
} else {
$context_uri = $item['parent-uri'] . '#context';
}
return $context_uri;
}
/**
* Returns if the post contains sensitive content ("nsfw")
*
* @param integer $item_id
*
* @return boolean
* @throws \Exception
*/
private static function isSensitive($item_id)
{
$condition = ['otype' => TERM_OBJ_POST, 'oid' => $item_id, 'type' => TERM_HASHTAG, 'term' => 'nsfw'];
return DBA::exists('term', $condition);
}
/**
* Creates event data
*
* @param array $item
*
* @return array with the event data
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function createEvent($item)
{
$event = [];
$event['name'] = $item['event-summary'];
$event['content'] = BBCode::convert($item['event-desc'], false, 9);
$event['startTime'] = DateTimeFormat::utc($item['event-start'] . '+00:00', DateTimeFormat::ATOM);
if (!$item['event-nofinish']) {
$event['endTime'] = DateTimeFormat::utc($item['event-finish'] . '+00:00', DateTimeFormat::ATOM);
}
if (!empty($item['event-location'])) {
$item['location'] = $item['event-location'];
$event['location'] = self::createLocation($item);
}
return $event;
}
/**
* Creates a note/article object array
*
* @param array $item
*
* @return array with the object data
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function createNote($item)
{
if ($item['event-type'] == 'event') {
$type = 'Event';
} elseif (!empty($item['title'])) {
$type = 'Article';
} else {
$type = 'Note';
}
if ($item['deleted']) {
$type = 'Tombstone';
}
$data = [];
$data['id'] = $item['uri'];
$data['type'] = $type;
if ($item['deleted']) {
return $data;
}
$data['summary'] = BBCode::toPlaintext(BBCode::getAbstract($item['body'], Protocol::ACTIVITYPUB));
if ($item['uri'] != $item['thr-parent']) {
$data['inReplyTo'] = $item['thr-parent'];
} else {
$data['inReplyTo'] = null;
}
$data['diaspora:guid'] = $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'];
$data['sensitive'] = self::isSensitive($item['id']);
$data['context'] = self::fetchContextURLForItem($item);
if (!empty($item['title'])) {
$data['name'] = BBCode::toPlaintext($item['title'], false);
}
$permission_block = self::createPermissionBlockForItem($item, false);
$body = $item['body'];
if (empty($item['uid']) || !Feature::isEnabled($item['uid'], 'explicit_mentions')) {
$body = self::prependMentions($body, $permission_block);
}
if ($type == 'Note') {
$body = self::removePictures($body);
} elseif (($type == 'Article') && empty($data['summary'])) {
$data['summary'] = BBCode::toPlaintext(Plaintext::shorten(self::removePictures($body), 1000));
}
if ($type == 'Event') {
$data = array_merge($data, self::createEvent($item));
} else {
$regexp = "/[@!]\[url\=([^\[\]]*)\].*?\[\/url\]/ism";
$body = preg_replace_callback($regexp, ['self', 'mentionCallback'], $body);
$data['content'] = BBCode::convert($body, false, 9);
}
$data['source'] = ['content' => $item['body'], 'mediaType' => "text/bbcode"];
if (!empty($item['signed_text']) && ($item['uri'] != $item['thr-parent'])) {
$data['diaspora:comment'] = $item['signed_text'];
}
$data['attachment'] = self::createAttachmentList($item, $type);
$data['tag'] = self::createTagList($item);
if (empty($data['location']) && (!empty($item['coord']) || !empty($item['location']))) {
$data['location'] = self::createLocation($item);
}
if (!empty($item['app'])) {
$data['generator'] = ['type' => 'Application', 'name' => $item['app']];
}
$data = array_merge($data, $permission_block);
return $data;
}
/**
* Creates an an "add tag" entry
*
* @param array $item
* @param array $data activity data
*
* @return array with activity data for adding tags
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
private static function createAddTag($item, $data)
{
$object = XML::parseString($item['object'], false);
$target = XML::parseString($item["target"], false);
$data['diaspora:guid'] = $item['guid'];
$data['actor'] = $item['author-link'];
$data['target'] = (string)$target->id;
$data['summary'] = BBCode::toPlaintext($item['body']);
$data['object'] = ['id' => (string)$object->id, 'type' => 'tag', 'name' => (string)$object->title, 'content' => (string)$object->content];
return $data;
}
/**
* Creates an announce object entry
*
* @param array $item
* @param array $data activity data
*
* @return array with activity data
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
private static function createAnnounce($item, $data)
{
$orig_body = $item['body'];
$announce = api_share_as_retweet($item);
if (empty($announce['plink'])) {
$data['type'] = 'Create';
$data['object'] = self::createNote($item);
return $data;
}
// Fetch the original id of the object
$activity = ActivityPub::fetchContent($announce['plink'], $item['uid']);
if (!empty($activity)) {
$ldactivity = JsonLD::compact($activity);
$id = JsonLD::fetchElement($ldactivity, '@id');
$type = str_replace('as:', '', JsonLD::fetchElement($ldactivity, '@type'));
if (!empty($id)) {
if (empty($announce['share-pre-body'])) {
// Pure announce, without a quote
$data['type'] = 'Announce';
$data['object'] = $id;
return $data;
}
// Quote
$data['type'] = 'Create';
$item['body'] = trim($announce['share-pre-body']) . "\n" . $id;
$data['object'] = self::createNote($item);
/// @todo Finally descide how to implement this in AP. This is a possible way:
$data['object']['attachment'][] = ['type' => $type, 'id' => $id];
$data['object']['source']['content'] = $orig_body;
return $data;
}
}
$item['body'] = $orig_body;
$data['type'] = 'Create';
$data['object'] = self::createNote($item);
return $data;
}
/**
* Creates an activity id for a given contact id
*
* @param integer $cid Contact ID of target
*
* @return bool|string activity id
*/
public static function activityIDFromContact($cid)
{
$contact = DBA::selectFirst('contact', ['uid', 'id', 'created'], ['id' => $cid]);
if (!DBA::isResult($contact)) {
return false;
}
$hash = hash('ripemd128', $contact['uid'].'-'.$contact['id'].'-'.$contact['created']);
$uuid = substr($hash, 0, 8). '-' . substr($hash, 8, 4) . '-' . substr($hash, 12, 4) . '-' . substr($hash, 16, 4) . '-' . substr($hash, 20, 12);
return System::baseUrl() . '/activity/' . $uuid;
}
/**
* Transmits a contact suggestion to a given inbox
*
* @param integer $uid User ID
* @param string $inbox Target inbox
* @param integer $suggestion_id Suggestion ID
*
* @return boolean was the transmission successful?
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function sendContactSuggestion($uid, $inbox, $suggestion_id)
{
$owner = User::getOwnerDataById($uid);
$suggestion = DBA::selectFirst('fsuggest', ['url', 'note', 'created'], ['id' => $suggestion_id]);
$data = ['@context' => ActivityPub::CONTEXT,
'id' => System::baseUrl() . '/activity/' . System::createGUID(),
'type' => 'Announce',
'actor' => $owner['url'],
'object' => $suggestion['url'],
'content' => $suggestion['note'],
'instrument' => self::getService(),
'to' => [ActivityPub::PUBLIC_COLLECTION],
'cc' => []];
$signed = LDSignature::sign($data, $owner);
Logger::log('Deliver profile deletion for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
return HTTPSignature::transmit($signed, $inbox, $uid);
}
/**
* Transmits a profile relocation to a given inbox
*
* @param integer $uid User ID
* @param string $inbox Target inbox
*
* @return boolean was the transmission successful?
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function sendProfileRelocation($uid, $inbox)
{
$owner = User::getOwnerDataById($uid);
$data = ['@context' => ActivityPub::CONTEXT,
'id' => System::baseUrl() . '/activity/' . System::createGUID(),
'type' => 'dfrn:relocate',
'actor' => $owner['url'],
'object' => $owner['url'],
'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
'instrument' => self::getService(),
'to' => [ActivityPub::PUBLIC_COLLECTION],
'cc' => []];
$signed = LDSignature::sign($data, $owner);
Logger::log('Deliver profile relocation for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
return HTTPSignature::transmit($signed, $inbox, $uid);
}
/**
* Transmits a profile deletion to a given inbox
*
* @param integer $uid User ID
* @param string $inbox Target inbox
*
* @return boolean was the transmission successful?
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function sendProfileDeletion($uid, $inbox)
{
$owner = User::getOwnerDataById($uid);
if (empty($owner)) {
Logger::error('No owner data found, the deletion message cannot be processed.', ['user' => $uid]);
return false;
}
if (empty($owner['uprvkey'])) {
Logger::error('No private key for owner found, the deletion message cannot be processed.', ['user' => $uid]);
return false;
}
$data = ['@context' => ActivityPub::CONTEXT,
'id' => System::baseUrl() . '/activity/' . System::createGUID(),
'type' => 'Delete',
'actor' => $owner['url'],
'object' => $owner['url'],
'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
'instrument' => self::getService(),
'to' => [ActivityPub::PUBLIC_COLLECTION],
'cc' => []];
$signed = LDSignature::sign($data, $owner);
Logger::log('Deliver profile deletion for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
return HTTPSignature::transmit($signed, $inbox, $uid);
}
/**
* Transmits a profile change to a given inbox
*
* @param integer $uid User ID
* @param string $inbox Target inbox
*
* @return boolean was the transmission successful?
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function sendProfileUpdate($uid, $inbox)
{
$owner = User::getOwnerDataById($uid);
$profile = APContact::getByURL($owner['url']);
$data = ['@context' => ActivityPub::CONTEXT,
'id' => System::baseUrl() . '/activity/' . System::createGUID(),
'type' => 'Update',
'actor' => $owner['url'],
'object' => self::getProfile($uid),
'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
'instrument' => self::getService(),
'to' => [$profile['followers']],
'cc' => []];
$signed = LDSignature::sign($data, $owner);
Logger::log('Deliver profile update for user ' . $uid . ' to ' . $inbox . ' via ActivityPub', Logger::DEBUG);
return HTTPSignature::transmit($signed, $inbox, $uid);
}
/**
* Transmits a given activity to a target
*
* @param string $activity Type name
* @param string $target Target profile
* @param integer $uid User ID
* @return bool
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
* @throws \Exception
*/
public static function sendActivity($activity, $target, $uid, $id = '')
{
$profile = APContact::getByURL($target);
if (empty($profile['inbox'])) {
Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
return;
}
$owner = User::getOwnerDataById($uid);
if (empty($id)) {
$id = System::baseUrl() . '/activity/' . System::createGUID();
}
$data = ['@context' => ActivityPub::CONTEXT,
'id' => $id,
'type' => $activity,
'actor' => $owner['url'],
'object' => $profile['url'],
'instrument' => self::getService(),
'to' => [$profile['url']]];
Logger::log('Sending activity ' . $activity . ' to ' . $target . ' for user ' . $uid, Logger::DEBUG);
$signed = LDSignature::sign($data, $owner);
return HTTPSignature::transmit($signed, $profile['inbox'], $uid);
}
/**
* Transmits a "follow object" activity to a target
* This is a preparation for sending automated "follow" requests when receiving "Announce" messages
*
* @param string $object Object URL
* @param string $target Target profile
* @param integer $uid User ID
* @return bool
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
* @throws \Exception
*/
public static function sendFollowObject($object, $target, $uid = 0)
{
$profile = APContact::getByURL($target);
if (empty($profile['inbox'])) {
Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
return;
}
if (empty($uid)) {
// Fetch the list of administrators
$admin_mail = explode(',', str_replace(' ', '', Config::get('config', 'admin_email')));
// We need to use some user as a sender. It doesn't care who it will send. We will use an administrator account.
$condition = ['verified' => true, 'blocked' => false, 'account_removed' => false, 'account_expired' => false, 'email' => $admin_mail];
$first_user = DBA::selectFirst('user', ['uid'], $condition);
$uid = $first_user['uid'];
}
$condition = ['verb' => Activity::FOLLOW, 'uid' => 0, 'parent-uri' => $object,
'author-id' => Contact::getPublicIdByUserId($uid)];
if (Item::exists($condition)) {
Logger::log('Follow for ' . $object . ' for user ' . $uid . ' does already exist.', Logger::DEBUG);
return false;
}
$owner = User::getOwnerDataById($uid);
$data = ['@context' => ActivityPub::CONTEXT,
'id' => System::baseUrl() . '/activity/' . System::createGUID(),
'type' => 'Follow',
'actor' => $owner['url'],
'object' => $object,
'instrument' => self::getService(),
'to' => [$profile['url']]];
Logger::log('Sending follow ' . $object . ' to ' . $target . ' for user ' . $uid, Logger::DEBUG);
$signed = LDSignature::sign($data, $owner);
return HTTPSignature::transmit($signed, $profile['inbox'], $uid);
}
/**
* Transmit a message that the contact request had been accepted
*
* @param string $target Target profile
* @param $id
* @param integer $uid User ID
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function sendContactAccept($target, $id, $uid)
{
$profile = APContact::getByURL($target);
if (empty($profile['inbox'])) {
Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
return;
}
$owner = User::getOwnerDataById($uid);
$data = ['@context' => ActivityPub::CONTEXT,
'id' => System::baseUrl() . '/activity/' . System::createGUID(),
'type' => 'Accept',
'actor' => $owner['url'],
'object' => [
'id' => (string)$id,
'type' => 'Follow',
'actor' => $profile['url'],
'object' => $owner['url']
],
'instrument' => self::getService(),
'to' => [$profile['url']]];
Logger::debug('Sending accept to ' . $target . ' for user ' . $uid . ' with id ' . $id);
$signed = LDSignature::sign($data, $owner);
HTTPSignature::transmit($signed, $profile['inbox'], $uid);
}
/**
* Reject a contact request or terminates the contact relation
*
* @param string $target Target profile
* @param $id
* @param integer $uid User ID
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function sendContactReject($target, $id, $uid)
{
$profile = APContact::getByURL($target);
if (empty($profile['inbox'])) {
Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
return;
}
$owner = User::getOwnerDataById($uid);
$data = ['@context' => ActivityPub::CONTEXT,
'id' => System::baseUrl() . '/activity/' . System::createGUID(),
'type' => 'Reject',
'actor' => $owner['url'],
'object' => [
'id' => (string)$id,
'type' => 'Follow',
'actor' => $profile['url'],
'object' => $owner['url']
],
'instrument' => self::getService(),
'to' => [$profile['url']]];
Logger::debug('Sending reject to ' . $target . ' for user ' . $uid . ' with id ' . $id);
$signed = LDSignature::sign($data, $owner);
HTTPSignature::transmit($signed, $profile['inbox'], $uid);
}
/**
* Transmits a message that we don't want to follow this contact anymore
*
* @param string $target Target profile
* @param integer $uid User ID
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
* @throws \Exception
*/
public static function sendContactUndo($target, $cid, $uid)
{
$profile = APContact::getByURL($target);
if (empty($profile['inbox'])) {
Logger::warning('No inbox found for target', ['target' => $target, 'profile' => $profile]);
return;
}
$object_id = self::activityIDFromContact($cid);
if (empty($object_id)) {
return;
}
$id = System::baseUrl() . '/activity/' . System::createGUID();
$owner = User::getOwnerDataById($uid);
$data = ['@context' => ActivityPub::CONTEXT,
'id' => $id,
'type' => 'Undo',
'actor' => $owner['url'],
'object' => ['id' => $object_id, 'type' => 'Follow',
'actor' => $owner['url'],
'object' => $profile['url']],
'instrument' => self::getService(),
'to' => [$profile['url']]];
Logger::log('Sending undo to ' . $target . ' for user ' . $uid . ' with id ' . $id, Logger::DEBUG);
$signed = LDSignature::sign($data, $owner);
HTTPSignature::transmit($signed, $profile['inbox'], $uid);
}
private static function prependMentions($body, array $permission_block)
{
if (Config::get('system', 'disable_implicit_mentions')) {
return $body;
}
$mentions = [];
foreach ($permission_block['to'] as $profile_url) {
$profile = Contact::getDetailsByURL($profile_url);
if (!empty($profile['addr'])
&& $profile['contact-type'] != Contact::TYPE_COMMUNITY
&& !strstr($body, $profile['addr'])
&& !strstr($body, $profile_url)
) {
$mentions[] = '@[url=' . $profile_url . ']' . $profile['nick'] . '[/url]';
}
}
$mentions[] = $body;
return implode(' ', $mentions);
}
}