- /**
- * Fetches ActivityPub content from the given url
- *
- * @param string $url content url
- * @return array
- */
- public static function fetchContent($url)
- {
- $ret = Network::curl($url, false, $redirects, ['accept_content' => 'application/activity+json, application/ld+json']);
- if (!$ret['success'] || empty($ret['body'])) {
- return;
- }
-
- return json_decode($ret['body'], true);
- }
-
- /**
- * Resolves the profile url from the address by using webfinger
- *
- * @param string $addr profile address (user@domain.tld)
- * @return string url
- */
- private static function addrToUrl($addr)
- {
- $addr_parts = explode('@', $addr);
- if (count($addr_parts) != 2) {
- return false;
- }
-
- $webfinger = 'https://' . $addr_parts[1] . '/.well-known/webfinger?resource=acct:' . urlencode($addr);
-
- $ret = Network::curl($webfinger, false, $redirects, ['accept_content' => 'application/jrd+json,application/json']);
- if (!$ret['success'] || empty($ret['body'])) {
- return false;
- }
-
- $data = json_decode($ret['body'], true);
-
- if (empty($data['links'])) {
- return false;
- }
-
- foreach ($data['links'] as $link) {
- if (empty($link['href']) || empty($link['rel']) || empty($link['type'])) {
- continue;
- }
-
- if (($link['rel'] == 'self') && ($link['type'] == 'application/activity+json')) {
- return $link['href'];
- }
- }
-
- return false;
- }
-
- public static function fetchprofile($url, $update = false)
- {
- if (empty($url)) {
- return false;
- }
-
- if (!$update) {
- $apcontact = DBA::selectFirst('apcontact', [], ['url' => $url]);
- if (DBA::isResult($apcontact)) {
- return $apcontact;
- }
-
- $apcontact = DBA::selectFirst('apcontact', [], ['alias' => $url]);
- if (DBA::isResult($apcontact)) {
- return $apcontact;
- }
-
- $apcontact = DBA::selectFirst('apcontact', [], ['addr' => $url]);
- if (DBA::isResult($apcontact)) {
- return $apcontact;
- }
- }
-
- if (empty(parse_url($url, PHP_URL_SCHEME))) {
- $url = self::addrToUrl($url);
- if (empty($url)) {
- return false;
- }
- }
-
- $data = self::fetchContent($url);
-
- if (empty($data) || empty($data['id']) || empty($data['inbox'])) {
- return false;
- }
-
- $apcontact = [];
- $apcontact['url'] = $data['id'];
- $apcontact['uuid'] = defaults($data, 'uuid', null);
- $apcontact['type'] = defaults($data, 'type', null);
- $apcontact['following'] = defaults($data, 'following', null);
- $apcontact['followers'] = defaults($data, 'followers', null);
- $apcontact['inbox'] = defaults($data, 'inbox', null);
- $apcontact['outbox'] = defaults($data, 'outbox', null);
- $apcontact['sharedinbox'] = JsonLD::fetchElement($data, 'endpoints', 'sharedInbox');
- $apcontact['nick'] = defaults($data, 'preferredUsername', null);
- $apcontact['name'] = defaults($data, 'name', $apcontact['nick']);
- $apcontact['about'] = defaults($data, 'summary', '');
- $apcontact['photo'] = JsonLD::fetchElement($data, 'icon', 'url');
- $apcontact['alias'] = JsonLD::fetchElement($data, 'url', 'href');
-
- $parts = parse_url($apcontact['url']);
- unset($parts['scheme']);
- unset($parts['path']);
- $apcontact['addr'] = $apcontact['nick'] . '@' . str_replace('//', '', Network::unparseURL($parts));
-
- $apcontact['pubkey'] = trim(JsonLD::fetchElement($data, 'publicKey', 'publicKeyPem'));
-
- // To-Do
- // manuallyApprovesFollowers
-
- // Unhandled
- // @context, tag, attachment, image, nomadicLocations, signature, following, followers, featured, movedTo, liked
-
- // Unhandled from Misskey
- // sharedInbox, isCat
-
- // Unhandled from Kroeg
- // kroeg:blocks, updated
-
- // Check if the address is resolvable
- if (self::addrToUrl($apcontact['addr']) == $apcontact['url']) {
- $parts = parse_url($apcontact['url']);
- unset($parts['path']);
- $apcontact['baseurl'] = Network::unparseURL($parts);
- } else {
- $apcontact['addr'] = null;
- }
-
- if ($apcontact['url'] == $apcontact['alias']) {
- $apcontact['alias'] = null;
- }
-
- $apcontact['updated'] = DateTimeFormat::utcNow();
-
- DBA::update('apcontact', $apcontact, ['url' => $url], true);