class.ilChatroomServerConnector.php

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<?php
/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilChatroomServerConnector
{
    protected static $connection_status = null;

    private $settings;

    public function __construct(ilChatroomServerSettings $settings)
    {
        $this->settings = $settings;
    }

    public static function checkServerConnection($use_cache = true)
    {
        if ($use_cache && self::$connection_status !== null) {
            return self::$connection_status;
        }

        require_once 'Modules/Chatroom/classes/class.ilChatroomAdmin.php';
        $connector = new self(ilChatroomAdmin::getDefaultConfiguration()->getServerSettings());
        self::$connection_status = (bool) $connector->isServerAlive();

        return self::$connection_status;
    }

    public function isServerAlive()
    {
        $response = $this->file_get_contents(
            $this->settings->getURL('Heartbeat'),
            array(
                'http' => array(
                    'timeout' => 2
                ),
                'https' => array(
                    'timeout' => 2
                )
            )
        );

        $responseObject = json_decode($response);

        return $responseObject->status == 200;
    }

    public function connect($scope, $userId)
    {
        return $this->file_get_contents(
            $this->settings->getURL('Connect', $scope) . '/' . $userId
        );
    }

    protected function file_get_contents($url, array $stream_context_params = null)
    {
        $credentials = $this->settings->getAuthKey() . ':' . $this->settings->getAuthSecret();
        $header =
            "Connection: close\r\n" .
            "Content-Type: application/json; charset=utf-8\r\n" .
            "Authorization: Basic " . base64_encode($credentials);

        $ctx = array(
            'http' => array(
                'method' => 'GET',
                'header' => $header
            ),
            'https' => array(
                'method' => 'GET',
                'header' => $header
            )
        );

        if (is_array($stream_context_params)) {
            $ctx = array_merge_recursive($ctx, $stream_context_params);
        }

        set_error_handler(function ($severity, $message, $file, $line) {
            throw new ErrorException($message, $severity, $severity, $file, $line);
        });

        try {
            $response = file_get_contents($url, null, stream_context_create($ctx));
            restore_error_handler();
            return $response;
        } catch (Exception $e) {
            restore_error_handler();
            ilLoggerFactory::getLogger('chatroom')->alert($e->getMessage());
        }

        return false;
    }

    public function sendCreatePrivateRoom($scope, $subScope, $user, $title)
    {
        return $this->file_get_contents(
            $this->settings->getURL('CreatePrivateRoom', $scope) . '/' . $subScope . '/' . $user . '/' . rawurlencode($title)
        );
    }

    public function sendDeletePrivateRoom($scope, $subScope, $user)
    {
        return $this->file_get_contents(
            $this->settings->getURL('DeletePrivateRoom', $scope) . '/' . $subScope . '/' . $user
        );
    }

    public function enterPrivateRoom($scope, $subScope, $user)
    {
        return $this->sendEnterPrivateRoom($scope, $subScope, $user);
    }

    public function sendEnterPrivateRoom($scope, $subScope, $user)
    {
        return $this->file_get_contents(
            $this->settings->getURL('EnterPrivateRoom', $scope) . '/' . $subScope . '/' . $user
        );
    }

    public function sendClearMessages($scope, $subScope, $user)
    {
        return $this->file_get_contents(
            $this->settings->getURL('ClearMessages', $scope) . '/' . $subScope . '/' . $user
        );
    }

    public function leavePrivateRoom($scope, $subScope, $user)
    {
        return $this->sendLeavePrivateRoom($scope, $subScope, $user);
    }

    public function sendLeavePrivateRoom($scope, $subScope, $user)
    {
        return $this->file_get_contents(
            $this->settings->getURL('LeavePrivateRoom', $scope) . '/' . $subScope . '/' . $user
        );
    }

    public function sendKick($scope, $subScope, $user)
    {
        return $this->kick($scope, $subScope, $user);
    }

    public function kick($scope, $subScope, $user)
    {
        return $this->file_get_contents(
            $this->settings->getURL('Kick', $scope) . '/' . $subScope . '/' . $user
        );
    }

    public function sendBan($scope, $subScope, $user)
    {
        return $this->file_get_contents(
            $this->settings->getURL('Ban', $scope) . '/' . $subScope . '/' . $user
        );
    }

    public function getSettings()
    {
        return $this->settings;
    }

    public function sendMessage($scope, $message, $options = array())
    {
        $query = http_build_query(array('message' => $message) + $options);
        $response = $this->post($scope, $query);
        return @json_decode($response);
    }

    public function post($scope, $query)
    {
        return $this->file_get_contents(
            $this->settings->getURL('Post', $scope) . '?' . $query
        );
    }

    public function sendInviteToPrivateRoom($scope, $subScope, $user, $invited_id)
    {
        return $this->file_get_contents(
            $this->settings->getURL('InvitePrivateRoom', $scope) . '/' . $subScope . '/' . $user . '/' . $invited_id
        );
    }

    public function createUniqueScopeId($roomId, $pRoomId = null)
    {
        if ($pRoomId != null) {
            $roomId .= '-' . $pRoomId;
        }

        return $roomId;
    }

    public function sendUserConfigChange($message)
    {
        $query = http_build_query(array('message' => $message));
        return $this->file_get_contents(
            $this->settings->getURL('UserConfigChange', null) . '?' . $query
        );
    }
}