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calendar_nextcloud_api.php
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calendar_nextcloud_api.php
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<?php
/**
* Nextcloud API for the Calendar plugin.
*
* @author Aleksander Machniak <machniak@apheleia-it.ch>
*
* Copyright (C) Apheleia IT AG <contact@apheleia-it.ch>
*
* 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/>.
*/
class calendar_nextcloud_api
{
public const PARTICIPANT_OWNER = 1;
public const PARTICIPANT_MODERATOR = 2;
public const PARTICIPANT_USER = 3;
public const PARTICIPANT_GUEST = 4;
public const PARTICIPANT_PUBLIC = 5;
public const PARTICIPANT_GUEST_MODERATOR = 6;
/**
* Make a request to the Nextcloud API
*
* @return false|array Response data or False on failure
*/
protected function request($path, $method = 'GET', $params = [])
{
$rcmail = rcube::get_instance();
$url = unslashify($rcmail->config->get('calendar_nextcloud_url'));
$url .= "/ocs/v2.php/$path";
try {
$request_config = [
'store_body' => true,
'follow_redirects' => true,
];
$request = libkolab::http_request($url, $method, $request_config);
// Authentication
$request->setAuth(
$rcmail->user->get_username(),
$rcmail->decrypt($_SESSION['password'])
);
// Disable CSRF prevention, and enable JSON responses
$request->setHeader([
'OCS-APIRequest' => 'true',
'Accept' => 'application/json',
]);
if (!empty($params)) {
if ($method == 'POST') {
$request->addPostParameter($params);
} else {
$request->setUrl($url . '?' . http_build_query($params));
}
}
// rcube::console($method . ": " . (string) $request->getUrl());
// Send the request
$response = $request->send();
$body = $response->getBody();
$code = $response->getStatus();
// rcube::console($code, $body);
if ($code < 400) {
return json_decode($body, true);
}
if (strpos($body, '<?xml') === 0) {
$doc = new DOMDocument();
$doc->loadXML($body);
$code = $doc->getElementsByTagName('statuscode')->item(0)->textContent;
$msg = $doc->getElementsByTagName('message')->item(0)->textContent;
} else {
$msg = 'Unknown error';
}
throw new Exception("Nextcloud API Error: [$code] $msg");
} catch (Exception $e) {
rcube::raise_error($e, true, false);
}
return false;
}
/**
* Find user by email address
*/
protected function findUserByEmail($email)
{
$email = strtolower($email);
$params = [
'search' => $email,
'itemType' => 'call',
'itemId' => ' ',
'shareTypes' => [0, 1, 7, 4],
];
// FIXME: Is this the only way to find a user by his email address?
$response = $this->request("core/autocomplete/get", 'GET', $params);
if (!empty($response['ocs']['data'])) {
foreach ($response['ocs']['data'] as $user) {
// FIXME: This is the only field that contains email address?
// Note: A Nextcloud contact (the "emails" source) will have an email address in
// the 'id' attribute instead in 'shareWithDisplayNameUnique'.
// Another option might be to parse 'label' attribute
if (strtolower($user['shareWithDisplayNameUnique']) == $email) {
return $user;
}
}
}
}
/**
* Create a Talk room
*
* @param string $name Room name
*
* @return string|false Room URL
*/
public function talk_room_create($name = '')
{
$rcmail = rcube::get_instance();
$params = [
'roomType' => 3,
'roomName' => $name ?: $rcmail->gettext('calendar.talkroomname'),
];
$response = $this->request('apps/spreed/api/v4/room', 'POST', $params);
if (is_array($response) && !empty($response['ocs']['data']['token'])) {
$token = $response['ocs']['data']['token'];
$url = unslashify($rcmail->config->get('calendar_nextcloud_url'));
return $url . '/call/' . $token;
}
return false;
}
/**
* Update a Talk room
*
* @param string $room Room ID (or url)
* @param array $participants Room participants' email addresses (extept the owner)
*
* @return bool
*/
public function talk_room_update($room = '', $participants = [])
{
if (preg_match('|https?://|', $room)) {
$arr = explode('/', $room);
$room = $arr[count($arr) - 1];
}
// Get existing room participants
$response = $this->request("apps/spreed/api/v4/room/{$room}/participants", 'GET');
if ($response === false) {
return false;
}
$attendees = [];
foreach ($response['ocs']['data'] as $attendee) {
if ($attendee['participantType'] != self::PARTICIPANT_OWNER) {
$attendees[$attendee['actorId']] = $attendee['attendeeId'];
}
}
foreach ($participants as $email) {
if ($user = $this->findUserByEmail($email)) {
// Participant already exists, skip
// Note: We're dealing with 'users' source here for now, 'emails' source
// will have an email address in 'actorId'
if (isset($attendees[$user['id']])) {
unset($attendees[$user['id']]);
continue;
}
// Register the participant
$params = ['newParticipant' => $user['id'], 'source' => $user['source']];
$response = $this->request("apps/spreed/api/v4/room/{$room}/participants", 'POST', $params);
}
}
// Remove participants not in the event anymore
foreach ($attendees as $attendeeId) {
$params = ['attendeeId' => $attendeeId];
$response = $this->request("apps/spreed/api/v4/room/{$room}/attendees", 'DELETE', $params);
}
return true;
}
}

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