Current File : //www/varak.net/nextcloud.varak.net/apps_old/apps/contacts/lib/Service/Social/MastodonProvider.php
<?php
/**
* @copyright Copyright (c) 2020 Matthias Heinisch <nextcloud@matthiasheinisch.de>
*
* @author Matthias Heinisch <nextcloud@matthiasheinisch.de>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\Contacts\Service\Social;
use OCP\Http\Client\IClient;
use OCP\Http\Client\IClientService;
class MastodonProvider implements ISocialProvider {
/** @var IClient */
private $httpClient;
/** @var string */
public $name = 'mastodon';
public function __construct(IClientService $httpClient) {
$this->httpClient = $httpClient->newClient();
}
/**
* Returns if this provider supports this contact
*
* @param {array} contact info
*
* @return bool
*/
public function supportsContact(array $contact):bool {
if (!array_key_exists('X-SOCIALPROFILE', $contact)) {
return false;
}
$profiles = $this->getProfileIds($contact);
return isset($profiles) && count($profiles) > 0;
}
/**
* Returns all possible profile-picture urls
*
* @param {array} contact information
*
* @return array
*/
public function getImageUrls(array $contact):array {
$profileIds = $this->getProfileIds($contact);
$urls = [];
foreach ($profileIds as $profileId) {
$url = $this->getImageUrl($profileId);
if (isset($url)) {
$urls[] = $url;
}
}
return $urls;
}
/**
* Returns the profile-picture url
*
* @param {array} contact information
*
* @return string|null
*/
public function getImageUrl(string $profileUrl):?string {
try {
$result = $this->httpClient->get($profileUrl, ['headers' => ['Accept' => 'application/json']]);
$jsonResult = json_decode($result->getBody(), true);
return $jsonResult["icon"]["url"] ?? null;
} catch (\Exception $e) {
return null;
}
}
/**
* Returns all possible profile URI for contact by searching the mastodon instance
*
* @param {array} contact information
*
* @return array of possible profileIds
*/
protected function getProfileIds($contact):array {
$socialprofiles = $contact['X-SOCIALPROFILE'];
$profileIds = [];
if (isset($socialprofiles)) {
foreach ($socialprofiles as $profile) {
if (strtolower($profile['type']) == $this->name) {
$masto_user_server = $this->cleanupId($profile['value']);
if (isset($masto_user_server)) {
try {
[$masto_user, $masto_server] = $masto_user_server;
# search for user webfinger
$webfinger = $masto_server . '/.well-known/webfinger?resource=acct:' . $masto_user . '@' . parse_url($masto_server)["host"];
$result = $this->httpClient->get($webfinger);
$jsonResult = json_decode($result->getBody(), null, 512, JSON_THROW_ON_ERROR);
# find account link
foreach ($jsonResult->links as $link) {
if (($link->rel == "self") and ($link->type == "application/activity+json")) {
$profileId = $link->href;
$profileIds[] = $profileId;
break;
}
}
} catch (\Exception $e) {
continue;
}
}
}
}
}
return $profileIds;
}
/**
* Returns the profile-id
*
* @param {string} the value from the contact's x-socialprofile
*
* @return array username and server instance
*/
protected function cleanupId(string $candidate):?array {
$candidate = preg_replace('/^' . preg_quote('x-apple:', '/') . '/', '', $candidate);
try {
$user_server = explode('@', $candidate);
if (strpos($candidate, 'http') !== 0) {
$masto_server = "https://" . array_pop($user_server);
$masto_user = array_pop($user_server);
} else {
$masto_user = array_pop($user_server);
$masto_server = array_pop($user_server);
}
if ((empty($masto_server)) || (empty($masto_user))) {
return null;
}
$masto_user = trim($masto_user, '/');
$masto_server = trim($masto_server, '/');
return array($masto_user, $masto_server);
} catch (\Exception $e) {
return null;
}
}
}
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