MISP/app/Lib/Tools/SyncTool.php

<?php

class SyncTool
{
    // take a server as parameter and return a HttpSocket object using the ssl options defined in the server settings
    public function setupHttpSocket($server = null, $timeout = false)
    {
        $params = array();
        if (!empty($server)) {
            if ($server['Server']['cert_file']) {
                $params['ssl_cafile'] = APP . "files" . DS . "certs" . DS . $server['Server']['id'] . '.pem';
            }
            if ($server['Server']['client_cert_file']) {
                $params['ssl_local_cert'] = APP . "files" . DS . "certs" . DS . $server['Server']['id'] . '_client.pem';
            }
            if ($server['Server']['self_signed']) {
                $params['ssl_allow_self_signed'] = true;
                $params['ssl_verify_peer_name'] = false;
                if (!isset($server['Server']['cert_file'])) {
                    $params['ssl_verify_peer'] = false;
                }
            }
            if (!empty($server['Server']['skip_proxy'])) {
                $params['skip_proxy'] = 1;
            }
            if (!empty($timeout)) {
                $params['timeout'] = $timeout;
            }
        }

        return $this->createHttpSocket($params);
    }

    public function setupHttpSocketFeed($feed = null)
    {
        return $this->setupHttpSocket();
    }

    /**
     * @param array $params
     * @return HttpSocket
     * @throws Exception
     */
    public function createHttpSocket($params = array())
    {
        // Use own CA PEM file
        $caPath = Configure::read('MISP.ca_path');
        if (!isset($params['ssl_cafile']) && $caPath) {
            if (!file_exists($caPath)) {
                throw new Exception("CA file '$caPath' doesn't exists.");
            }
            $params['ssl_cafile'] = $caPath;
        }

        App::uses('HttpSocket', 'Network/Http');
        $HttpSocket = new HttpSocket($params);
        $proxy = Configure::read('Proxy');
        if (empty($params['skip_proxy']) && isset($proxy['host']) && !empty($proxy['host'])) {
            $HttpSocket->configProxy($proxy['host'], $proxy['port'], $proxy['method'], $proxy['user'], $proxy['password']);
        }
        return $HttpSocket;
    }
}