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friendica/src/Protocol/ActivityPub/Transmitter.php

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<?php
/**
* @file src/Protocol/ActivityPub/Transmitter.php
*/
namespace Friendica\Protocol\ActivityPub;
use Friendica\Database\DBA;
use Friendica\Core\System;
use Friendica\BaseObject;
use Friendica\Util\HTTPSignature;
use Friendica\Core\Protocol;
use Friendica\Model\Conversation;
use Friendica\Model\Contact;
use Friendica\Model\APContact;
use Friendica\Model\Item;
use Friendica\Model\Term;
use Friendica\Model\User;
use Friendica\Util\DateTimeFormat;
use Friendica\Content\Text\BBCode;
use Friendica\Util\JsonLD;
use Friendica\Util\LDSignature;
use Friendica\Protocol\ActivityPub;
use Friendica\Model\Profile;
/**
* @brief ActivityPub Transmitter Protocol class
*/
class Transmitter
{
/**
* @brief collects the lost of followers of the given owner
*
* @param array $owner Owner array
* @param integer $page Page number
*
* @return array of owners
*/
public static function getFollowers($owner, $page = null)
{
$condition = ['rel' => [Contact::FOLLOWER, Contact::FRIEND], 'network' => Protocol::NATIVE_SUPPORT, 'uid' => $owner['uid'],
'self' => 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 {
$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;
}
/**
* @brief Create list of following contacts
*
* @param array $owner Owner array
* @param integer $page Page numbe
*
* @return array of following contacts
*/
public static function getFollowing($owner, $page = null)
{
$condition = ['rel' => [Contact::SHARING, Contact::FRIEND], 'network' => Protocol::NATIVE_SUPPORT, 'uid' => $owner['uid'],
'self' => 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 {
$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;
}
/**
* @brief Public posts for the given owner
*
* @param array $owner Owner array
* @param integer $page Page numbe
*
* @return array of posts
*/
public static function getOutbox($owner, $page = null)
{
$public_contact = Contact::getIdForURL($owner['url'], 0, true);
$condition = ['uid' => $owner['uid'], 'contact-id' => $owner['id'], 'author-id' => $public_contact,
'wall' => true, 'private' => false, 'gravity' => [GRAVITY_PARENT, GRAVITY_COMMENT],
'deleted' => false, 'visible' => true];
$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 {
$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 ActivityPub profile of the given user
*
* @param integer $uid User ID
* @return profile array
*/
public static function profile($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'];
$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'], [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;
}
/**
* @brief Returns an array with permissions of a given item array
*
* @param array $item
*
* @return array with permissions
*/
private static function fetchPermissionBlockFromConversation($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'])) {
$receiver = $item_profile['followers'];
}
if (!in_array($receiver, $exclude)) {
$permissions[$element][] = $receiver;
}
}
}
return $permissions;
}
/**
* @brief Creates an array of permissions from an item thread
*
* @param array $item
*
* @return permission array
*/
public static function createPermissionBlockForItem($item)
{
$data = ['to' => [], 'cc' => []];
$data = array_merge($data, self::fetchPermissionBlockFromConversation($item));
$actor_profile = APContact::getByURL($item['author-link']);
$terms = Term::tagArrayFromItemId($item['id'], TERM_MENTION);
$contacts[$item['author-link']] = $item['author-link'];
if (!$item['private']) {
$data['to'][] = ActivityPub::PUBLIC_COLLECTION;
if (!empty($actor_profile['followers'])) {
$data['cc'][] = $actor_profile['followers'];
}
foreach ($terms as $term) {
$profile = APContact::getByURL($term['url'], false);
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) {
$cid = Contact::getIdForURL($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(['id', 'author-link', 'owner-link', 'gravity'], ['parent' => $item['parent']]);
while ($parent = Item::fetch($parents)) {
// Don't include data from future posts
if ($parent['id'] >= $item['id']) {
continue;
}
$profile = APContact::getByURL($parent['author-link'], false);
if (!empty($profile) && empty($contacts[$profile['url']])) {
$data['cc'][] = $profile['url'];
$contacts[$profile['url']] = $profile['url'];
}
if ($item['gravity'] != GRAVITY_PARENT) {
continue;
}
$profile = APContact::getByURL($parent['owner-link'], false);
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;
}
/**
* @brief Fetches a list of inboxes of followers of a given user
*
* @param integer $uid User ID
*
* @return array of follower inboxes
*/
public static function fetchTargetInboxesforUser($uid)
{
$inboxes = [];
$condition = ['uid' => $uid, 'network' => Protocol::ACTIVITYPUB, 'archive' => false, 'pending' => false];
if (!empty($uid)) {
$condition['rel'] = [Contact::FOLLOWER, Contact::FRIEND];
}
$contacts = DBA::select('contact', ['notify', 'batch'], $condition);
while ($contact = DBA::fetch($contacts)) {
$contact = defaults($contact, 'batch', $contact['notify']);
$inboxes[$contact] = $contact;
}
DBA::close($contacts);
return $inboxes;
}
/**
* @brief Fetches an array of inboxes for the given item and user
*
* @param array $item
* @param integer $uid User ID
*
* @return array with inboxes
*/
public static function fetchTargetInboxes($item, $uid)
{
$permissions = self::createPermissionBlockForItem($item);
if (empty($permissions)) {
return [];
}
$inboxes = [];
if ($item['gravity'] == GRAVITY_ACTIVITY) {
$item_profile = APContact::getByURL($item['author-link']);
} else {
$item_profile = APContact::getByURL($item['owner-link']);
}
foreach (['to', 'cc', 'bto', 'bcc'] as $element) {
if (empty($permissions[$element])) {
continue;
}
foreach ($permissions[$element] as $receiver) {
if ($receiver == $item_profile['followers']) {
$inboxes = self::fetchTargetInboxesforUser($uid);
} else {
$profile = APContact::getByURL($receiver);
if (!empty($profile)) {
$target = defaults($profile, 'sharedinbox', $profile['inbox']);
$inboxes[$target] = $target;
}
}
}
}
return $inboxes;
}
/**
* @brief Returns the activity type of a given item
*
* @param array $item
*
* @return activity type
*/
public static function getTypeOfItem($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 $type;
}
/**
* @brief Creates an activity array for a given item id
*
* @param integer $item_id
* @param boolean $object_mode Is the activity item is used inside another object?
*
* @return array of activity
*/
public static function createActivityFromItem($item_id, $object_mode = false)
{
$item = Item::selectFirst([], ['id' => $item_id, 'parent-network' => Protocol::NATIVE_SUPPORT]);
if (!DBA::isResult($item)) {
return false;
}
$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;
}
}
$type = self::getTypeOfItem($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;
$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);
}
$data['context'] = self::fetchContextURLForItem($item);
$data = array_merge($data, self::createPermissionBlockForItem($item));
if (in_array($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']);
if (!$object_mode) {
return LDSignature::sign($data, $owner);
} else {
return $data;
}
}
/**
* @brief Creates an object array for a given item id
*
* @param integer $item_id
*
* @return object array
*/
public static function createObjectFromItemID($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;
}
/**
* @brief Returns a tag array for a given item array
*
* @param array $item
*
* @return array of tags
*/
private static function createTagList($item)
{
$tags = [];
$terms = Term::tagArrayFromItemId($item['id'], TERM_MENTION);
foreach ($terms as $term) {
$contact = Contact::getDetailsByURL($term['url']);
if (!empty($contact['addr'])) {
$mention = '@' . $contact['addr'];
} else {
$mention = '@' . $term['url'];
}
$tags[] = ['type' => 'Mention', 'href' => $term['url'], 'name' => $mention];
}
return $tags;
}
/**
* @brief Fetches the "context" value for a givem item array from the "conversation" table
*
* @param array $item
*
* @return string with context url
*/
private static function fetchContextURLForItem($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 = str_replace('/objects/', '/context/', $item['parent-uri']);
}
return $context_uri;
}
/**
* @brief Creates a note/article object array
*
* @param array $item
*
* @return object array
*/
private static function createNote($item)
{
if (!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;
}
$data['summary'] = null; // Ignore by now
if ($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['actor'] = $item['author-link'];
$data['sensitive'] = false; // - Query NSFW
$data['context'] = self::fetchContextURLForItem($item);
if (!empty($item['title'])) {
$data['name'] = BBCode::convert($item['title'], false, 7);
}
$data['content'] = BBCode::convert($item['body'], false, 7);
$data['source'] = ['content' => $item['body'], 'mediaType' => "text/bbcode"];
if (!empty($item['signed_text']) && ($item['uri'] != $item['thr-parent'])) {
$data['diaspora:comment'] = $item['signed_text'];
}
$data['attachment'] = []; // @ToDo
$data['tag'] = self::createTagList($item);
$data = array_merge($data, self::createPermissionBlockForItem($item));
return $data;
}
/**
* @brief Transmits a profile deletion to a given inbox
*
* @param integer $uid User ID
* @param string $inbox Target inbox
*/
public static function transmitProfileDeletion($uid, $inbox)
{
$owner = User::getOwnerDataById($uid);
$profile = APContact::getByURL($owner['url']);
$data = ['@context' => 'https://www.w3.org/ns/activitystreams',
'id' => System::baseUrl() . '/activity/' . System::createGUID(),
'type' => 'Delete',
'actor' => $owner['url'],
'object' => self::profile($uid),
'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
'to' => [ActivityPub::PUBLIC_COLLECTION],
'cc' => []];
$signed = LDSignature::sign($data, $owner);
logger('Deliver profile deletion for user ' . $uid . ' to ' . $inbox .' via ActivityPub', LOGGER_DEBUG);
HTTPSignature::transmit($signed, $inbox, $uid);
}
/**
* @brief Transmits a profile change to a given inbox
*
* @param integer $uid User ID
* @param string $inbox Target inbox
*/
public static function transmitProfileUpdate($uid, $inbox)
{
$owner = User::getOwnerDataById($uid);
$profile = APContact::getByURL($owner['url']);
$data = ['@context' => 'https://www.w3.org/ns/activitystreams',
'id' => System::baseUrl() . '/activity/' . System::createGUID(),
'type' => 'Update',
'actor' => $owner['url'],
'object' => self::profile($uid),
'published' => DateTimeFormat::utcNow(DateTimeFormat::ATOM),
'to' => [$profile['followers']],
'cc' => []];
$signed = LDSignature::sign($data, $owner);
logger('Deliver profile update for user ' . $uid . ' to ' . $inbox .' via ActivityPub', LOGGER_DEBUG);
HTTPSignature::transmit($signed, $inbox, $uid);
}
/**
* @brief Transmits a given activity to a target
*
* @param array $activity
* @param string $target Target profile
* @param integer $uid User ID
*/
public static function transmitActivity($activity, $target, $uid)
{
$profile = APContact::getByURL($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, $owner);
HTTPSignature::transmit($signed, $profile['inbox'], $uid);
}
/**
* @brief Transmit a message that the contact request had been accepted
*
* @param string $target Target profile
* @param $id
* @param integer $uid User ID
*/
public static function transmitContactAccept($target, $id, $uid)
{
$profile = APContact::getByURL($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, $owner);
HTTPSignature::transmit($signed, $profile['inbox'], $uid);
}
/**
* @brief
*
* @param string $target Target profile
* @param $id
* @param integer $uid User ID
*/
public static function transmitContactReject($target, $id, $uid)
{
$profile = APContact::getByURL($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, $owner);
HTTPSignature::transmit($signed, $profile['inbox'], $uid);
}
/**
* @brief
*
* @param string $target Target profile
* @param integer $uid User ID
*/
public static function transmitContactUndo($target, $uid)
{
$profile = APContact::getByURL($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, $owner);
HTTPSignature::transmit($signed, $profile['inbox'], $uid);
}
}
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