federator/plugins/federator/contentnation.php
Yannis Vogel 2ae81a3748
initial rough support for sending follow to CN
we now send follows to CN to the api/profile/profileName/fedfollow endpoint, either with a post, or a delete.
- commit also contains files where line-endings suddenly changed to crlf (now it's back to lf).
- targetRequestType (post/delete) now depends on the activity
- we now also set the id to username when fetching a user from CN
2025-06-11 18:15:13 +02:00

1095 lines
50 KiB
PHP

<?php
/**
* SPDX-FileCopyrightText: 2024 Sascha Nitsch (grumpydeveloper) https://contentnation.net/@grumpydevelop
* SPDX-License-Identifier: GPL-3.0-or-later
*
* @author Sascha Nitsch (grumpydeveloper)
**/
namespace Federator\Connector;
/**
* Connector to ContentNation.net
*/
class ContentNation implements Connector
{
/**
* config parameter
*
* @var array<string, mixed> $config
*/
private $config;
/**
* main instance
*
* @var \Federator\Main $main
*/
private $main;
/**
* service-URL
*
* @var string $service
*/
private $service;
/**
* constructor
*
* @param \Federator\Main $main
*/
public function __construct($main)
{
$config = parse_ini_file(PROJECT_ROOT . '/contentnation.ini', true);
if ($config !== false) {
$this->config = $config;
}
$this->service = $config['contentnation']['service-uri'];
$this->main = $main;
$this->main->setHost($this->service);
}
/**
* get followers of given user
*
* @param string $userId user id
* @return \Federator\Data\FedUser[]|false
*/
public function getRemoteFollowersOfUser($userId)
{
// todo implement queue for this
if (preg_match("#^([^@]+)@([^/]+)#", $userId, $matches) == 1) {
$userId = $matches[1];
}
$remoteURL = $this->service . '/api/profile/' . urlencode($userId) . '/followers';
[$response, $info] = \Federator\Main::getFromRemote($remoteURL, []);
if ($info['http_code'] != 200) {
error_log("ContentNation::getRemoteFollowersOfUser error retrieving followers for userId: $userId . Error: " . json_encode($info));
return false;
}
$r = json_decode($response, true);
if ($r === false || $r === null || !is_array($r)) {
return false;
}
$followers = [];
return $followers;
}
/**
* get following of given user
*
* @param string $userId user id
* @return \Federator\Data\FedUser[]|false
*/
public function getRemoteFollowingForUser($userId)
{
// todo implement queue for this
if (preg_match("#^([^@]+)@([^/]+)#", $userId, $matches) == 1) {
$userId = $matches[1];
}
$remoteURL = $this->service . '/api/profile/' . urlencode($userId) . '/following';
[$response, $info] = \Federator\Main::getFromRemote($remoteURL, []);
if ($info['http_code'] != 200) {
error_log("ContentNation::getRemoteFollowingForUser error retrieving following for userId: $userId . Error: " . json_encode($info));
return false;
}
$r = json_decode($response, true);
if ($r === false || $r === null || !is_array($r)) {
return false;
}
$followers = [];
return $followers;
}
/**
* get posts by given user
*
* @param string $userId user id
* @param int $min min date
* @param int $max max date
* @param int $limit limit results
* @unused-param $limit
* @return \Federator\Data\ActivityPub\Common\Activity[]|false
*/
public function getRemotePostsByUser($userId, $min, $max, $limit)
{
if (preg_match("#^([^@]+)@([^/]+)#", $userId, $matches) == 1) {
$userId = $matches[1];
}
$remoteURL = $this->service . '/api/profile/' . urlencode($userId) . '/activities';
if ($min > 0) {
$remoteURL .= '&minTS=' . intval($min, 10);
}
if ($max > 0) {
$remoteURL .= '&maxTS=' . intval($max, 10);
}
[$response, $info] = \Federator\Main::getFromRemote($remoteURL, []);
if ($info['http_code'] != 200) {
error_log("ContentNation::getRemotePostsByUser error retrieving activities for userId: $userId . Error: " . json_encode($info));
return false;
}
$r = json_decode($response, true);
if ($r === false || $r === null || !is_array($r)) {
return false;
}
$posts = [];
if (array_key_exists('activities', $r)) {
$activities = $r['activities'];
$config = $this->main->getConfig();
$domain = $config['generic']['externaldomain'];
$ourUrl = 'https://' . $domain;
$imgpath = $this->config['userdata']['path'];
$userdata = $this->config['userdata']['url'];
foreach ($activities as $activity) {
switch ($activity['type']) {
case 'Article':
$create = new \Federator\Data\ActivityPub\Common\Create();
$create->setAActor($ourUrl . '/' . $userId);
$create->setPublished($activity['published'] ?? $activity['timestamp'])
->addTo($ourUrl . '/' . $userId . '/followers')
->addCC("https://www.w3.org/ns/activitystreams#Public");
$create->setURL($ourUrl . '/' . $activity['profilename'] . '/' . $activity['name']);
$create->setID($ourUrl . '/' . $activity['profilename'] . '/' . $activity['name']);
$apArticle = new \Federator\Data\ActivityPub\Common\Article();
if (array_key_exists('tags', $activity)) {
foreach ($activity['tags'] as $tag) {
$href = $ourUrl . '/search.htm?tagsearch=' . urlencode($tag);
$tagObj = new \Federator\Data\ActivityPub\Common\Tag();
$tagObj->setHref($href)
->setName('#' . urlencode(str_replace(' ', '', $tag)))
->setType('Hashtag');
$apArticle->addTag($tagObj);
}
}
$apArticle->setPublished($activity['published'])
->setName($activity['title'])
->setAttributedTo($ourUrl . '/' . $activity['profilename'])
->setContent(
$activity['teaser'] ??
$this->main->translate(
$activity['language'],
'article',
'newarticle'
)
)
->addTo("https://www.w3.org/ns/activitystreams#Public")
->addCC($ourUrl . '/' . $userId . '/followers.json');
$articleimage = $activity['imagealt'] ??
$this->main->translate($activity['language'], 'article', 'image');
$idurl = $ourUrl . '/' . $userId . '/' . $activity['name'];
$apArticle->setID($idurl)
->setURL($idurl);
$image = $activity['image'] ?? $activity['profileimg'];
$path = $imgpath . $activity['profile'] . '/' . $image;
$type = file_exists($path) ? mime_content_type($path) : false;
$mediaType = ($type !== false && !str_starts_with($type, 'text/'))
? $type
: 'image/jpeg';
$img = new \Federator\Data\ActivityPub\Common\Image();
$img->setMediaType($mediaType)
->setName($articleimage)
->setURL($userdata . '/' . $activity['profile'] . $image);
$apArticle->addImage($img);
$create->setObject($apArticle);
$posts[] = $create;
break; // Article
case 'Comment':
$create = new \Federator\Data\ActivityPub\Common\Create();
$create->setAActor($ourUrl . '/' . $userId);
$create->setID($activity['id'])
->setPublished($activity['published'] ?? $activity['timestamp'])
->addTo($ourUrl . '/' . $userId . '/followers')
->addCC("https://www.w3.org/ns/activitystreams#Public");
$commentJson = $activity;
$commentJson['type'] = 'Note';
$commentJson['summary'] = $activity['subject'];
$commentJson['id'] = $ourUrl . '/' . $activity['articleOwnerName'] . '/' . $activity['articleName'] . '#' . $activity['id'];
$note = \Federator\Data\ActivityPub\Factory::newFromJson($commentJson, "");
if ($note === null) {
error_log("ContentNation::getRemotePostsByUser couldn't create comment");
$note = new \Federator\Data\ActivityPub\Common\Activity('Comment');
$create->setObject($note);
break;
}
$note->setID($commentJson['id']);
if (!isset($commentJson['parent']) || $commentJson['parent'] === null) {
$note->setInReplyTo($ourUrl . '/' . $activity['articleOwnerName'] . '/' . $activity['articleName']);
} else {
$note->setInReplyTo($ourUrl . '/' . $activity['articleOwnerName'] . '/' . $activity['articleName'] . "#" . $commentJson['parent']);
}
$url = $ourUrl . '/' . $activity['articleOwnerName'] . '/' . $activity['articleName'] . '#' . $activity['id'];
$create->setURL($url);
$create->setID($url);
$create->setObject($note);
$posts[] = $create;
break; // Comment
case 'Vote':
// Build Like/Dislike as top-level activity
$likeType = $activity['upvote'] === true ? 'Like' : 'Dislike';
$like = new \Federator\Data\ActivityPub\Common\Activity($likeType);
$like->setAActor($ourUrl . '/' . $userId);
$like->setID($activity['id'])
->setPublished($activity['published'] ?? $activity['timestamp']);
// $like->addTo("https://www.w3.org/ns/activitystreams#Public")
// ->addCC('https://' . $domain . '/' . $userId . '/followers');
$like->setSummary(
$this->main->translate(
$activity['articlelang'],
'vote',
$likeType === 'Like' ? 'like' : 'dislike',
[$activity['username']]
)
);
$objectUrl = $ourUrl . '/' . $userId . '/' . $activity['articlename'];
$like->setURL($objectUrl . '#' . $activity['id']);
$like->setID($objectUrl . '#' . $activity['id']);
$like->setObject($objectUrl);
$posts[] = $like;
break; // Vote
}
}
}
return $posts;
}
/**
* get statistics from remote system
*
* @return \Federator\Data\Stats|false
*/
public function getRemoteStats()
{
$remoteURL = $this->service . '/api/stats';
[$response, $info] = \Federator\Main::getFromRemote($remoteURL, []);
if ($info['http_code'] != 200) {
return false;
}
$r = json_decode($response, true);
if ($r === false || $r === null || !is_array($r)) {
return false;
}
$stats = new \Federator\Data\Stats();
$stats->userCount = array_key_exists('userCount', $r) ? $r['userCount'] : 0;
$stats->postCount = array_key_exists('pageCount', $r) ? $r['pageCount'] : 0;
$stats->commentCount = array_key_exists('commentCount', $r) ? $r['commentCount'] : 0;
return $stats;
}
/**
* get remote user by given name
*
* @param string $_name user/profile name
* @return \Federator\Data\User | false
*/
public function getRemoteUserByName(string $_name)
{
// validate name
if (preg_match("/^[a-zA-Z@0-9\._\-]+$/", $_name) != 1) {
return false;
}
// make sure we only get name part, without domain
if (preg_match("#^([^@]+)@([^/]+)#", $_name, $matches) == 1) {
$name = $matches[1];
} else {
$name = $_name;
}
$remoteURL = $this->service . '/api/users/info?user=' . urlencode($name);
$headers = ['Accept: application/json'];
[$response, $info] = \Federator\Main::getFromRemote($remoteURL, $headers);
if ($info['http_code'] != 200) {
return false;
}
$r = json_decode($response, true);
if ($r === false || $r === null || !is_array($r)) {
return false;
}
$user = new \Federator\Data\User();
$user->externalid = $_name;
$user->id = $_name;
$user->iconMediaType = $r['iconMediaType'];
$user->iconURL = $r['iconURL'];
$user->imageMediaType = $r['imageMediaType'];
$user->imageURL = $r['imageURL'];
$user->name = $r['name'];
$user->summary = $r['summary'];
$user->type = $r['type'];
$user->registered = intval($r['registered'], 10);
return $user;
}
/**
* get remote user by given session
*
* @param string $_session session id
* @param string $_user user or profile name
* @return \Federator\Data\User | false
*/
public function getRemoteUserBySession(string $_session, string $_user)
{
// validate $_session and $user
if (preg_match("/^[a-z0-9]{16}$/", $_session) != 1) {
return false;
}
if (preg_match("/^[a-zA-Z@0-9\._\-]+$/", $_user) != 1) {
return false;
}
$remoteURL = $this->service . '/api/users/permissions?profile=' . urlencode($_user);
$headers = ['Cookie: session=' . $_session, 'Accept: application/json'];
[$response, $info] = \Federator\Main::getFromRemote($remoteURL, $headers);
if ($info['http_code'] != 200) {
return false;
}
$r = json_decode($response, true);
if ($r === false || !is_array($r) || !array_key_exists($_user, $r)) {
return false;
}
$user = $this->getRemoteUserByName($_user);
if ($user === false) {
return false;
}
// extend with permissions
$user->permissions = [];
$user->session = $_session;
foreach ($r[$_user] as $p) {
$user->permissions[] = $p;
}
return $user;
}
/**
* Convert jsonData to Activity format
*
* @param array<string, mixed> $jsonData the json data from our platfrom
* @param string $articleId the original id of the article (if applicable)
* (used to identify the article in the remote system)
* @return \Federator\Data\ActivityPub\Common\Activity|false
*/
public function jsonToActivity($jsonData, &$articleId)
{
$returnActivity = false;
// Common fields for all activity types
$ap = [
'@context' => 'https://www.w3.org/ns/activitystreams',
'type' => 'Create', // Default to 'Create'
'id' => $jsonData['id'] ?? null,
'actor' => $jsonData['actor'] ?? null,
];
$config = $this->main->getConfig();
$domain = $config['generic']['externaldomain'];
$ourUrl = 'https://' . $domain;
// Extract actorName as the last segment of the actor URL (after the last '/')
$actorData = $jsonData['actor'] ?? null;
$actorName = $actorData['name'] ?? null;
$ap['actor'] = $ourUrl . '/' . $actorName;
if (isset($jsonData['type'])) {
switch ($jsonData['type']) {
case 'undo':
$ap['type'] = 'Undo';
$ap['actor'] = $ourUrl . '/' . $actorName;
$objectType = $jsonData['object']['type'] ?? null;
if ($objectType === "article") {
$articleName = $jsonData['object']['name'] ?? null;
$ownerName = $jsonData['object']['ownerName'] ?? null;
$ap['id'] = $ourUrl . '/' . $ownerName . '/' . $articleName . '/undo';
$ap['object'] = self::generateObjectJson($ourUrl, $jsonData);
} elseif ($objectType === "comment") {
$articleName = $jsonData['object']['articleName'] ?? null;
$ownerName = $jsonData['object']['articleOwnerName'] ?? null;
$commentId = $jsonData['object']['id'] ?? null;
$ap['id'] = $ourUrl . '/' . $ownerName . '/' . $articleName . '#' . $commentId . '/undo';
$ap['object'] = self::generateObjectJson($ourUrl, $jsonData);
} elseif ($objectType === "vote") {
$id = $jsonData['object']['id'] ?? null;
$articleName = $jsonData['object']['articleName'] ?? null;
$articleOwnerName = $jsonData['object']['articleOwnerName'] ?? null;
$ap['id'] = $ourUrl . '/' . $articleOwnerName . '/' . $articleName . '#' . $id . '/undo';
$ap['published'] = $jsonData['object']['published'] ?? null;
$ap['actor'] = $ourUrl . '/' . $actorName;
$ap['object']['id'] = $ourUrl . '/' . $articleOwnerName . '/' . $articleName . '#' . $id;
$ap['object']['url'] = $ourUrl . '/' . $articleOwnerName . '/' . $articleName . '#' . $id;
$ap['object']['actor'] = $ourUrl . '/' . $actorName;
if ($jsonData['object']['vote']['value'] == 1) {
$ap['object']['type'] = 'Like';
} elseif ($jsonData['object']['vote']['value'] == 0) {
$ap['object']['type'] = 'Dislike';
} else {
error_log("ContentNation::jsonToActivity unknown vote value: {$jsonData['object']['vote']['value']}");
break;
}
$ap['object']['object'] = self::generateObjectJson($ourUrl, $jsonData);
} else {
error_log("ContentNation::jsonToActivity unknown undo type: {$objectType}");
break;
}
$returnActivity = \Federator\Data\ActivityPub\Factory::newActivityFromJson($ap);
if ($returnActivity === false) {
error_log("ContentNation::jsonToActivity couldn't create undo");
$returnActivity = new \Federator\Data\ActivityPub\Common\Undo();
} else {
$returnActivity->setID($ap['id']);
$returnActivity->setURL($ap['id']);
}
break;
default:
// Handle unsupported types or fallback to default behavior
throw new \InvalidArgumentException("ContentNation::jsonToActivity Unsupported type: {$jsonData['type']}");
}
} else {
// Handle specific fields based on the type
switch ($jsonData['object']['type']) {
case 'article':
$articleName = $jsonData['object']['name'] ?? null;
$articleOwnerName = $jsonData['object']['ownerName'] ?? null;
// Set Create-level fields
$updatedOn = $jsonData['object']['modified'] ?? null;
$originalPublished = $jsonData['object']['published'] ?? null;
$update = $updatedOn !== $originalPublished;
$ap['published'] = $updatedOn ?? $originalPublished;
$ap['id'] = $ourUrl . "/" . $articleOwnerName . "/" . $articleName;
$ap['url'] = $ourUrl . "/" . $articleOwnerName . "/" . $articleName;
$ap['type'] = $update ? 'Update' : 'Create';
$ap['actor'] = $ourUrl . '/' . $actorName;
if ($update) {
$ap['id'] .= '#update';
$ap['url'] .= '#update';
}
$ap['cc'] = ['https://www.w3.org/ns/activitystreams#Public'];
if (isset($jsonData['options'])) {
if (isset($jsonData['options']['informFollowers'])) {
if ($jsonData['options']['informFollowers'] === true) {
$ap['to'][] = $ourUrl . '/' . $actorName . '/followers';
}
}
}
$ap['object'] = self::generateObjectJson($ourUrl, $jsonData);
$returnActivity = \Federator\Data\ActivityPub\Factory::newActivityFromJson($ap);
if ($returnActivity === false) {
error_log("ContentNation::jsonToActivity couldn't create article");
$returnActivity = new \Federator\Data\ActivityPub\Common\Activity('Create');
} else {
$returnActivity->setID($ap['id']);
$returnActivity->setURL($ap['url']);
}
$articleId = $jsonData['object']['id']; // Set the article ID for the activity
break;
case 'comment':
$commentId = $jsonData['object']['id'] ?? null;
$articleName = $jsonData['object']['articleName'] ?? null;
$articleOwnerName = $jsonData['object']['articleOwnerName'] ?? null;
// Set Create-level fields
$ap['published'] = $jsonData['object']['published'] ?? null;
$ap['actor'] = $ourUrl . '/' . $actorName;
$ap['id'] = $ourUrl . "/" . $articleOwnerName . "/" . $articleName . "#" . $commentId;
$ap['url'] = $ourUrl . "/" . $articleOwnerName . "/" . $articleName . "#" . $commentId;
$ap['type'] = 'Create';
$ap['cc'] = ['https://www.w3.org/ns/activitystreams#Public'];
if (isset($jsonData['options'])) {
if (isset($jsonData['options']['informFollowers'])) {
if ($jsonData['options']['informFollowers'] === true) {
if ($actorName !== $articleOwnerName) {
$ap['to'][] = $ourUrl . '/' . $articleOwnerName;
}
$ap['to'][] = $ourUrl . '/' . $actorName . '/followers';
}
}
}
$ap['object'] = self::generateObjectJson($ourUrl, $jsonData);
$returnActivity = \Federator\Data\ActivityPub\Factory::newActivityFromJson($ap);
if ($returnActivity === false) {
error_log("ContentNation::jsonToActivity couldn't create comment");
$returnActivity = new \Federator\Data\ActivityPub\Common\Activity('Create');
} else {
$returnActivity->setID($ap['id']);
$returnActivity->setURL($ap['url']);
}
$articleId = $jsonData['object']['articleId']; // Set the article ID for the activity
break;
case 'vote':
$articleName = $jsonData['object']['articleName'] ?? null;
$articleOwnerName = $jsonData['object']['articleOwnerName'] ?? null;
$voteId = $jsonData['object']['id'] ?? null;
$ap['published'] = $jsonData['object']['published'] ?? null;
$ap['actor'] = $ourUrl . '/' . $actorName;
$ap['id'] = $ourUrl . '/' . $articleOwnerName . '/' . $articleName . '#' . $voteId;
$ap['url'] = $ourUrl . '/' . $articleOwnerName . '/' . $articleName . '#' . $voteId;
if ($jsonData['object']['vote']['value'] == 1) {
$ap['type'] = 'Like';
} elseif ($jsonData['object']['vote']['value'] == 0) {
$ap['type'] = 'Dislike';
} else {
error_log("ContentNation::jsonToActivity unknown vote value: {$jsonData['object']['vote']['value']}");
break;
}
$ap['object'] = self::generateObjectJson($ourUrl, $jsonData);
$returnActivity = \Federator\Data\ActivityPub\Factory::newActivityFromJson($ap);
if ($returnActivity === false) {
error_log("ContentNation::jsonToActivity couldn't create vote");
if ($ap['type'] === "Like") {
$returnActivity = new \Federator\Data\ActivityPub\Common\Like();
} elseif ($ap['type'] === "Dislike") {
$returnActivity = new \Federator\Data\ActivityPub\Common\Dislike();
} else {
$returnActivity = new \Federator\Data\ActivityPub\Common\Undo();
}
} else {
$returnActivity->setID($ap['id']);
$returnActivity->setURL($ap['url']);
}
$articleId = $jsonData['object']['articleId']; // Set the article ID for the activity
break;
default:
// Handle unsupported types or fallback to default behavior
throw new \InvalidArgumentException("ContentNation::jsonToActivity Unsupported object type: {$jsonData['type']}");
}
}
return $returnActivity;
}
/**
* Convert jsonData to Activity format
*
* @param string $ourUrl the url of our instance
* @param array<string, mixed> $jsonData the json data from our platfrom
* @return array|string|false the json object data or false
*/
private static function generateObjectJson($ourUrl, $jsonData)
{
$objectType = $jsonData['object']['type'] ?? null;
$actorData = $jsonData['actor'] ?? null;
$actorName = $actorData['name'] ?? null;
$actorUrl = $ourUrl . '/' . $actorName;
if ($objectType === "article") {
$articleName = $jsonData['object']['name'] ?? null;
$articleOwnerName = $jsonData['object']['ownerName'] ?? null;
$updatedOn = $jsonData['object']['modified'] ?? null;
$originalPublished = $jsonData['object']['published'] ?? null;
$update = $updatedOn !== $originalPublished;
$returnJson = [
'type' => 'Article',
'id' => $ourUrl . "/" . $articleOwnerName . "/" . $articleName,
'name' => $jsonData['object']['title'] ?? null,
'published' => $originalPublished,
'summary' => $jsonData['object']['summary'] ?? null,
'content' => $jsonData['object']['content'] ?? null,
'attributedTo' => $actorUrl,
'url' => $ourUrl . "/" . $articleOwnerName . "/" . $articleName,
'cc' => ['https://www.w3.org/ns/activitystreams#Public'],
];
if ($update) {
$returnJson['updated'] = $updatedOn;
}
if (isset($jsonData['object']['tags'])) {
if (is_array($jsonData['object']['tags'])) {
foreach ($jsonData['object']['tags'] as $tag) {
$returnJson['tags'][] = $tag;
}
} elseif (is_string($jsonData['object']['tags']) && $jsonData['object']['tags'] !== '') {
// If it's a single tag as a string, add it as a one-element array
$returnJson['tags'][] = $jsonData['object']['tags'];
}
}
if (isset($jsonData['options'])) {
if (isset($jsonData['options']['informFollowers'])) {
if ($jsonData['options']['informFollowers'] === true) {
$returnJson['to'][] = $ourUrl . '/' . $actorName . '/followers';
}
}
}
} elseif ($objectType === "comment") {
$commentId = $jsonData['object']['id'] ?? null;
$articleName = $jsonData['object']['articleName'] ?? null;
$articleOwnerName = $jsonData['object']['articleOwnerName'] ?? null;
$returnJson = [
'type' => 'Note',
'id' => $ourUrl . "/" . $articleOwnerName . "/" . $articleName . "#" . $commentId,
'url' => $ourUrl . "/" . $articleOwnerName . "/" . $articleName . "#" . $commentId,
'attributedTo' => $actorUrl,
'content' => $jsonData['object']['content'] ?? null,
'summary' => $jsonData['object']['summary'] ?? null,
'published' => $jsonData['object']['published'] ?? null,
'cc' => ['https://www.w3.org/ns/activitystreams#Public'],
];
if (isset($jsonData['options'])) {
if (isset($jsonData['options']['informFollowers'])) {
if ($jsonData['options']['informFollowers'] === true) {
$returnJson['to'][] = $ourUrl . '/' . $actorName . '/followers';
}
}
}
$replyType = $jsonData['object']['inReplyTo']['type'] ?? null;
if ($replyType === "article") {
$returnJson['inReplyTo'] = $ourUrl . "/" . $articleOwnerName . "/" . $articleName;
} elseif ($replyType === "comment") {
$returnJson['inReplyTo'] = $ourUrl . "/" . $articleOwnerName . "/" . $articleName . "#" . $jsonData['object']['inReplyTo']['id'];
} else {
error_log("ContentNation::generateObjectJson for comment - unknown inReplyTo type: {$replyType}");
}
} elseif ($objectType === "vote") {
$votedOn = $jsonData['object']['type'] ?? null;
$articleName = $jsonData['object']['articleName'] ?? null;
$articleOwnerName = $jsonData['object']['articleOwnerName'] ?? null;
$objectId = $ourUrl . '/' . $articleOwnerName . '/' . $articleName;
if ($votedOn === "comment") {
$objectId .= '#' . $jsonData['object']['commentId'];
}
$returnJson = $objectId;
} else {
error_log("ContentNation::generateObjectJson unknown object type: {$objectType}");
return false;
}
return $returnJson;
}
/**
* send CN-friendly json from ActivityPub activity
*
* @param \Federator\Data\FedUser $sender the user of the sender
* @param \Federator\Data\ActivityPub\Common\Activity $activity the activity
* @return boolean did we successfully send the activity?
*/
public function sendActivity($sender, $activity)
{
$targetUrl = $this->service;
$targetRequestType = 'post'; // Default request type
// Convert ActivityPub activity to ContentNation JSON format and retrieve target url
$jsonData = self::activityToJson($this->main->getDatabase(), $this->service, $activity, $targetUrl, $targetRequestType);
if ($jsonData === false) {
error_log("ContentNation::sendActivity failed to convert activity to JSON");
return false;
}
$json = json_encode($jsonData, JSON_UNESCAPED_SLASHES);
if ($json === false) {
throw new \Exception('Failed to encode JSON: ' . json_last_error_msg());
}
$digest = 'SHA-256=' . base64_encode(hash('sha256', $json, true));
$date = gmdate('D, d M Y H:i:s') . ' GMT';
$parsed = parse_url($targetUrl);
if ($parsed === false) {
throw new \Exception('Failed to parse URL: ' . $targetUrl);
}
if (!isset($parsed['host']) || !isset($parsed['path'])) {
throw new \Exception('Invalid target URL: missing host or path');
}
$extHost = $parsed['host'];
$path = $parsed['path'];
// Build the signature string
$signatureString = "(request-target): $targetRequestType {$path}\n" .
"host: {$extHost}\n" .
"date: {$date}\n" .
"digest: {$digest}";
$pKeyPath = PROJECT_ROOT . '/' . $this->main->getConfig()['keys']['federatorPrivateKeyPath'];
$privateKeyPem = file_get_contents($pKeyPath);
if ($privateKeyPem === false) {
http_response_code(500);
throw new \Federator\Exceptions\PermissionDenied("Private key couldn't be determined");
}
$pkeyId = openssl_pkey_get_private($privateKeyPem);
if ($pkeyId === false) {
throw new \Exception('Invalid private key');
}
openssl_sign($signatureString, $signature, $pkeyId, OPENSSL_ALGO_SHA256);
$signature_b64 = base64_encode($signature);
$signatureHeader = 'algorithm="rsa-sha256",headers="(request-target) host date digest",signature="' . $signature_b64 . '"';
$ch = curl_init($targetUrl);
if ($ch === false) {
throw new \Exception('Failed to initialize cURL');
}
$headers = [
'Host: ' . $extHost,
'Date: ' . $date,
'Digest: ' . $digest,
'Content-Type: application/json',
'Signature: ' . $signatureHeader,
'Accept: application/json',
'Username: ' . 'ap:' . $sender->id,
];
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
switch ($targetRequestType) {
case 'post':
curl_setopt($ch, CURLOPT_POST, true);
break;
case 'delete':
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'DELETE');
break;
default:
throw new \Exception("ContentNation::sendActivity Unsupported target request type: $targetRequestType");
}
curl_setopt($ch, CURLOPT_POSTFIELDS, $json);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
$response = curl_exec($ch);
curl_close($ch);
if ($response === false) {
throw new \Exception("Failed to send activity: " . curl_error($ch));
} else {
$httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if ($httpcode != 200 && $httpcode != 202) {
throw new \Exception("Unexpected HTTP code $httpcode: $response");
}
}
return true;
}
/**
* Convert ActivityPub activity to ContentNation JSON format
*
* @param \mysqli $dbh database handle
* @param string $serviceUrl the service URL
* @param \Federator\Data\ActivityPub\Common\Activity $activity the activity
* @param string $targetUrl the target URL for the activity
* @param string $targetRequestType the target request type (e.g., 'post', 'delete', etc.)
* @return array<string, mixed>|false the json data or false on failure
*/
private function activityToJson($dbh, $serviceUrl, \Federator\Data\ActivityPub\Common\Activity $activity, string &$targetUrl, string &$targetRequestType)
{
$type = strtolower($activity->getType());
$targetRequestType = 'post'; // Default request type
switch ($type) {
case 'create':
case 'update':
$object = $activity->getObject();
if (is_object($object)) {
$objType = strtolower($object->getType());
$articleId = \Federator\DIO\Posts::getOriginalArticleId($dbh, $activity);
if ($articleId === null) {
error_log("ContentNation::activityToJson Failed to get original article ID for create/update activity");
}
switch ($objType) {
case 'article':
// We don't support article create/update at this point in time
error_log("ContentNation::activityToJson Unsupported create/update object type: {$objType}");
break;
case 'note':
$targetUrl = $serviceUrl . '/api/article/' . $articleId . '/comment';
$type = 'comment';
$inReplyTo = $object->getInReplyTo();
if ($inReplyTo !== '') {
$target = $inReplyTo;
} else {
$target = $object->getObject();
}
$comment = null;
if (is_string($target)) {
if (strpos($target, '#') !== false) {
$parts = explode('#', $target);
if (count($parts) > 0) {
$comment = $parts[count($parts) - 1];
}
}
} else {
error_log("ContentNation::activityToJson Unsupported target type for comment with id: " . $activity->getID() . " Type: " . gettype($target));
return false;
}
return [
'type' => $type,
'id' => $activity->getID(),
'parent' => $comment,
'subject' => $object->getSummary(),
'comment' => $object->getContent(),
];
default:
error_log("ContentNation::activityToJson Unsupported create/update object type: {$objType}");
return false;
}
}
break;
case 'follow':
$profileUrl = $activity->getObject();
if (!is_string($profileUrl)) {
error_log("ContentNation::activityToJson Invalid profile URL: " . json_encode($profileUrl));
return false;
}
$receiverName = basename((string) (parse_url($profileUrl, PHP_URL_PATH) ?? ''));
$ourDomain = parse_url($profileUrl, PHP_URL_HOST);
if ($receiverName === "" || $ourDomain === "") {
error_log("ContentNation::activityToJson no profileName or domain found for object url: " . $profileUrl);
return false;
}
$receiver = $receiverName;
try {
$localUser = \Federator\DIO\User::getUserByName(
$dbh,
$receiver,
$this,
null
);
} catch (\Throwable $e) {
error_log("ContentNation::activityToJson get user by name: " . $receiver . ". Exception: " . $e->getMessage());
return false;
}
if ($localUser === null || $localUser->id === null) {
error_log("ContentNation::activityToJson couldn't find user: $receiver");
return false;
}
$targetUrl = $serviceUrl . '/api/profile/' . $localUser->id . '/fedfollow';
$type = 'follow';
$actor = $activity->getAActor();
$fedUser = \Federator\DIO\FedUser::getUserByName(
$dbh,
$actor,
null
);
$from = $fedUser->id;
return [
'type' => $type,
'id' => $activity->getID(),
'from' => $from,
'to' => $localUser->id,
];
case 'like':
case 'dislike':
$articleId = \Federator\DIO\Posts::getOriginalArticleId($dbh, $activity);
if ($articleId === null) {
error_log("ContentNation::activityToJson Failed to get original article ID for vote activity");
}
$voteValue = $type === 'like' ? true : false;
$activityType = 'vote';
$inReplyTo = $activity->getInReplyTo();
if ($inReplyTo !== '') {
$target = $inReplyTo;
} else {
$target = $activity->getObject();
}
$comment = null;
if (is_string($target)) {
if (strpos($target, '#') !== false) {
$parts = explode('#', $target);
if (count($parts) > 0) {
$comment = $parts[count($parts) - 1];
}
}
} else {
error_log("ContentNation::activityToJson Unsupported target type for vote with id: " . $activity->getID() . " Type: " . gettype($target));
return false;
}
$targetUrl = $serviceUrl . '/api/article/' . $articleId . '/vote';
return [
'vote' => $voteValue,
'type' => $activityType,
'id' => $activity->getID(),
'comment' => $comment,
];
case 'undo':
$object = $activity->getObject();
if (is_object($object)) {
$objType = strtolower($object->getType());
switch ($objType) {
case 'follow':
$profileUrl = $object->getObject();
if (!is_string($profileUrl)) {
error_log("ContentNation::activityToJson Invalid profile URL: " . json_encode($profileUrl));
return false;
}
$receiverName = basename((string) (parse_url($profileUrl, PHP_URL_PATH) ?? ''));
$ourDomain = parse_url($profileUrl, PHP_URL_HOST);
if ($receiverName === "" || $ourDomain === "") {
error_log("ContentNation::activityToJson no profileName or domain found for object url: " . $profileUrl);
return false;
}
$receiver = $receiverName;
try {
$localUser = \Federator\DIO\User::getUserByName(
$dbh,
$receiver,
$this,
null
);
} catch (\Throwable $e) {
error_log("ContentNation::activityToJson get user by name: " . $receiver . ". Exception: " . $e->getMessage());
return false;
}
if ($localUser === null || $localUser->id === null) {
error_log("ContentNation::activityToJson couldn't find user: $receiver");
return false;
}
$targetUrl = $serviceUrl . '/api/profile/' . $localUser->id . '/fedfollow';
$type = 'follow';
if ($object instanceof \Federator\Data\ActivityPub\Common\Activity) {
$actor = $object->getAActor();
if ($actor !== '') {
$fedUser = \Federator\DIO\FedUser::getUserByName(
$dbh,
$actor,
null
);
$from = $fedUser->id;
$targetRequestType = 'delete';
return [
'type' => $type,
'id' => $object->getID(),
'from' => $from,
'to' => $localUser->id,
];
}
}
return false;
case 'like':
case 'dislike':
$articleId = \Federator\DIO\Posts::getOriginalArticleId($dbh, $activity);
if ($articleId === null) {
error_log("ContentNation::activityToJson Failed to get original article ID for undo vote activity");
}
$activityType = 'vote';
$inReplyTo = $object->getInReplyTo();
if ($inReplyTo !== '') {
$target = $inReplyTo;
} else {
$target = $object->getObject();
}
$comment = null;
if (is_string($target)) {
if (strpos($target, '#') !== false) {
$parts = explode('#', $target);
if (count($parts) > 0) {
$comment = $parts[count($parts) - 1];
}
}
} else {
error_log("ContentNation::activityToJson Unsupported target type for undo vote with id: " . $activity->getID() . " Type: " . gettype($target));
return false;
}
$targetUrl = $serviceUrl . '/api/article/' . $articleId . '/vote';
return [
'vote' => null,
'type' => $activityType,
'id' => $object->getID(),
'comment' => $comment,
];
case 'note':
// We don't support comment deletions at this point in time
error_log("ContentNation::activityToJson Unsupported undo object type: {$objType}");
break;
default:
error_log("ContentNation::activityToJson Unsupported create/update object type: {$objType}");
return false;
}
}
break;
default:
error_log("ContentNation::activityToJson Unsupported activity type: {$type}");
return false;
}
return false;
}
/**
* check if the headers include a valid signature
*
* @param string[] $headers the headers
* @throws \Federator\Exceptions\PermissionDenied
* @return string|\Federator\Exceptions\PermissionDenied
*/
public function checkSignature($headers)
{
$signatureHeader = $headers['Signature'] ?? null;
if (!isset($signatureHeader)) {
throw new \Federator\Exceptions\PermissionDenied("Missing Signature header");
}
if (!isset($headers['X-Sender']) || $headers['X-Sender'] !== $this->config['keys']['headerSenderName']) {
throw new \Federator\Exceptions\PermissionDenied("Invalid sender name");
}
// Parse Signature header
preg_match_all('/(\w+)=["\']?([^"\',]+)["\']?/', $signatureHeader, $matches);
$signatureParts = array_combine($matches[1], $matches[2]);
$signature = base64_decode($signatureParts['signature']);
$signedHeaders = explode(' ', $signatureParts['headers']);
$pKeyPath = PROJECT_ROOT . '/' . $this->config['keys']['publicKeyPath'];
$publicKeyPem = file_get_contents($pKeyPath);
if ($publicKeyPem === false) {
http_response_code(500);
throw new \Federator\Exceptions\PermissionDenied("Public key couldn't be determined");
}
// Reconstruct the signed string
$signedString = '';
foreach ($signedHeaders as $header) {
if ($header === '(request-target)') {
$method = strtolower($_SERVER['REQUEST_METHOD']);
$path = $_SERVER['REQUEST_URI'];
$headerValue = "$method $path";
} else {
$headerValue = $headers[ucwords($header, '-')] ?? '';
}
$signedString .= strtolower($header) . ": " . $headerValue . "\n";
}
$signedString = rtrim($signedString);
// Verify the signature
$pubkeyRes = openssl_pkey_get_public($publicKeyPem);
$verified = false;
if ($pubkeyRes instanceof \OpenSSLAsymmetricKey && is_string($signature)) {
$verified = openssl_verify($signedString, $signature, $pubkeyRes, OPENSSL_ALGO_SHA256);
}
if ($verified != 1) {
http_response_code(500);
throw new \Federator\Exceptions\PermissionDenied("Signature verification failed");
}
return "Signature verified.";
}
}
namespace Federator;
/**
* Function to initialize plugin
*
* @param \Federator\Main $main main instance
* @return void
*/
function contentnation_load($main)
{
$cn = new Connector\ContentNation($main);
# echo "contentnation::contentnation_load Loaded new connector, adding to main\n"; // TODO change to proper log
$main->setConnector($cn);
}