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<?php

defined('ABSPATH') or die;
require_once rsssl_le_path . 'integrations/cpanel/functions.php';
class rsssl_cPanel
{
    public $host;
    private $username;
    private $password;
    public $ssl_installation_url;
    public function __construct()
    {
        $username = rsssl_get_value('cpanel_username');
        $password = RSSSL_LE()->letsencrypt_handler->decode(rsssl_get_value('cpanel_password'));
        $host = rsssl_get_value('cpanel_host');
        $this->host = str_replace(array('http://', 'https://', ':2083', ':'), '', $host);
        $this->username = $username;
        $this->password = $password;
        $this->ssl_installation_url = 'https://' . $this->host . ":2083/frontend/paper_lantern/ssl/install.html";
    }
    public function credentials_available()
    {
        if (!empty($this->host) && !empty($this->password) && !empty($this->username)) {
            return true;
        }
        return false;
    }
    public function installSSL($domains)
    {
        $response = false;
        if (is_array($domains) && count($domains) > 0) {
            foreach ($domains as $domain) {
                $response_item = $this->installSSLPerDomain($domain);
                if (!$response) {
                    $response = $response_item;
                }
                if ($response->status !== 'success') {
                    $response = $response_item;
                }
            }
        }
        if (!$response) {
            $response = new RSSSL_RESPONSE('error', 'stop', __("No valid list of domains.", "really-simple-ssl"));
        }
        if ($response->status === 'success') {
            update_option('rsssl_le_certificate_installed_by_rsssl', 'cpanel:default');
        }
        return $response;
    }
    public function installSSLPerDomain($domain)
    {
        $shell_addon_active = defined('rsssl_shell_path');
        $key_file = get_option('rsssl_private_key_path');
        $cert_file = get_option('rsssl_certificate_path');
        $cabundle_file = get_option('rsssl_intermediate_path');
        $request_uri = 'https://' . $this->host . ':2083/execute/SSL/install_ssl';
        $payload = ['domain' => $domain, 'cert' => file_get_contents($cert_file), 'key' => file_get_contents($key_file), 'cabundle' => file_get_contents($cabundle_file)];
        $response = $this->connectUapi($request_uri, $payload);
        if (empty($response)) {
            error_log('Not able to login');
            update_option('rsssl_installation_error', 'cpanel:default');
            $status = 'warning';
            $action = $shell_addon_active ? 'skip' : 'continue';
            $message = rsssl_get_manual_instructions_text($this->ssl_installation_url);
        } else {
            if ($response->status) {
                delete_option('rsssl_installation_error');
                error_log('SSL successfully installed on ' . $domain . ' successfully.');
                $status = 'success';
                $action = 'continue';
                $message = sprintf(__("SSL successfully installed on %s", "really-simple-ssl"), $domain);
            } else {
                update_option('rsssl_installation_error', 'cpanel:default');
                error_log($response->errors[0]);
                $status = 'error';
                $action = $shell_addon_active ? 'skip' : 'continue';
                $message = __("Errors were reported during installation", "really-simple-ssl") . '<br> ' . $response->errors[0];
            }
        }
        return new RSSSL_RESPONSE($status, $action, $message);
    }
    public function enableAutoSSL($domains)
    {
        $domains = implode(',', $domains);
        $request_uri = 'https://' . $this->host . ':2083/execute/SSL/remove_autossl_excluded_domains';
        $payload = ['domains' => $domains];
        $response = $this->connectUapi($request_uri, $payload);
        if (empty($response)) {
            update_option('rsssl_installation_error', 'cpanel:autossl');
            error_log('The install_ssl cURL call did not return valid JSON');
            $status = 'error';
            $action = 'skip';
            $message = rsssl_get_manual_instructions_text($this->ssl_installation_url);
        } else {
            if ($response->status) {
                delete_option('rsssl_installation_error');
                error_log('Congrats! SSL installed on ' . $domains . ' successfully.');
                $status = 'success';
                $action = 'finalize';
                $message = __("SSL successfully installed on {$domains}", "really-simple-ssl");
            } else {
                update_option('rsssl_installation_error', 'cpanel:autossl');
                error_log('The auto SSL cURL call returned valid JSON, but reported errors:');
                error_log($response->errors[0]);
                $status = 'error';
                $action = 'skip';
                $message = __("Errors were reported during installation.", "really-simple-ssl") . '<br> ' . $response->errors[0];
            }
        }
        return new RSSSL_RESPONSE($status, $action, $message);
    }
    public function connectUapi($request_uri, $payload = null)
    {
        $ch = curl_init($request_uri);
        curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
        curl_setopt($ch, CURLOPT_USERPWD, $this->username . ':' . $this->password);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_BUFFERSIZE, 131072);
        if (null !== $payload) {
            curl_setopt($ch, CURLOPT_POST, true);
            curl_setopt($ch, CURLOPT_POSTFIELDS, $payload);
        }
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        $curl_response = curl_exec($ch);
        error_log(print_r($curl_response, true));
        curl_close($ch);
        return json_decode($curl_response);
    }
    public function set_txt_record($domain, $value)
    {
        $args = ['domain' => $domain, 'name' => '_acme-challenge', 'type' => 'TXT', 'txtdata' => $value, 'ttl' => '600', 'class' => 'IN', 'cpanel_jsonapi_user' => $this->username, 'cpanel_jsonapi_module' => 'ZoneEdit', 'cpanel_jsonapi_func' => 'add_zone_record', 'cpanel_jsonapi_apiversion' => '2'];
        $args = http_build_query($args, '', '&');
        $url = 'https://' . $this->host . ':2083/json-api/cpanel';
        $authstr = 'Authorization: Basic ' . base64_encode($this->username . ':' . $this->password) . "\r\n";
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_BUFFERSIZE, 131072);
        $header[0] = $authstr . "Content-Type: application/x-www-form-urlencoded\r\n" . 'Content-Length: ' . \strlen($args) . "\r\n" . "\r\n" . $args;
        curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
        curl_setopt($curl, CURLOPT_POST, 1);
        $response = curl_exec($curl);
        curl_close($curl);
        if (false === $response) {
            return new RSSSL_RESPONSE('error', 'stop', __("Unable to connect to cPanel", "really-simple-ssl") . ' ' . curl_error($curl));
        }
        if (true === stristr($response, '<html>')) {
            return new RSSSL_RESPONSE('error', 'stop', __("Login credentials incorrect", "really-simple-ssl"));
        }
        $response_array = json_decode($response, true);
        if (isset($response_array['cpanelresult']['data'][0]['result']['status'])) {
            if ($response_array['cpanelresult']['data'][0]['result']['status']) {
                $status = 'success';
                $action = 'continue';
                $message = __("Successfully added TXT record.", "really-simple-ssl");
            } else {
                $status = 'warning';
                $action = 'continue';
                $message = __("Could not automatically add TXT record. Please proceed manually, following the steps below.", "really-simple-ssl");
                if (isset($response_array['cpanelresult']['data'][0]['result']['statusmsg'])) {
                    $message .= '<br>' . $response_array['cpanelresult']['data'][0]['result']['statusmsg'];
                }
            }
            return new RSSSL_RESPONSE($status, $action, $message);
        }
        $event_result = (bool) $response_array['cpanelresult']['event']['result'];
        $preevent_result = isset($response_array['cpanelresult']['preevent']) ? (bool) $response_array['cpanelresult']['preevent']['result'] : true;
        $postevent_result = isset($response_array['cpanelresult']['postevent']) ? (bool) $response_array['cpanelresult']['postevent']['result'] : true;
        if ($event_result && $preevent_result && $postevent_result) {
            $status = 'success';
            $action = 'continue';
            $message = __("Successfully added TXT record.", "really-simple-ssl");
        } else {
            error_log(print_r($response_array, true));
            $status = 'warning';
            $action = 'continue';
            $message = __("Could not automatically add TXT record. Please proceed manually, following the steps below.", "really-simple-ssl");
        }
        return new RSSSL_RESPONSE($status, $action, $message);
    }
}