whmcsNextcloud/nextCloudEMailAvailable.php

<?php
/**
 * @copyright Copyright (c) Thurdata GmbH 2020
 * @license GPL
 * 
 */
$pos = strpos($_SERVER['HTTP_REFERER'],getenv('HTTP_HOST'));
if($pos===false) {
    die('Restricted access');
}

/**
 * Requires the whmcs init
 * Requires this PHP api to make soap calls and parse responses
 */
require_once(__DIR__ . '/../../../init.php');
use WHMCS\Database\Capsule;

$whmcs = App::self();
$email = $_GET['email'];
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
    echo "invalid";
    exit;
}
$productID = $_GET['pid'];

$accessData = array('nextcloudServer' => '', 'adminUser' => '', 'adminPass' => '');

$serverGroupIDObj = Capsule::table('tblproducts')
	->select('servergroup')
	->where('id', '=', $productID)
	->get();
$serverGroupID = $serverGroupIDObj[0]->servergroup;

$serverIDObj = Capsule::table('tblservergroupsrel')
    ->select('serverid')
    ->where('groupid', '=', $serverGroupID)
    ->get();
$serverID = $serverIDObj[0]->serverid;

$server = Capsule::table('tblservers')
	->select('hostname', 'username', 'password')
	->where('id', '=', $serverID)
	->where('active', '=', 1)
	->get();
$accessData['nextcloudServer'] = $server[0]->hostname;
$accessData['adminUser'] = $server[0]->username;
$adminPassDecrypt = localAPI('DecryptPassword', array('password2' => $server[0]->password));

if ($adminPassDecrypt['result'] == 'success') {
    $accessData['adminPass'] = $adminPassDecrypt['password'];
}


//error_log("NextCloud User Avaialable: ACC    " . $accountName);
//error_log("--------------------------");
//error_log("NextCloud User Avaialable: PID    " . $productID);
//error_log("NextCloud User Avaialable: GID    " . $serverGroupID);
//error_log("NextCloud User Avaialable: SID    " . $serverID);
//error_log("NextCloud User Avaialable: SERVER " . $accessData['nextcloudServer']);
//error_log("NextCloud User Avaialable: USER   " . $accessData['adminUser']);
//error_log("NextCloud User Avaialable: PASS   " . $accessData['adminPass']);


$nextcloudURL =  'https://' . $accessData['nextcloudServer'] . "/ocs/v1.php/cloud/users?search=" . $email;

//error_log("NextCloud User Avaialable: URL    " . $nextcloudURL);

$response = nextcloud_send($nextcloudURL,$accessData['adminUser'],$accessData['adminPass'],"GET");

//error_log("NextCloud User Available NextCloud Response: " . $response->ocs->meta->statuscode);
//error_log("NextCloud User Available NextCloud Response Content " . print_r($response,true));

if (is_null($response) == true) {
    echo "error";
    exit;
}

if ($response->ocs->meta->statuscode != '100') {
    echo "no";
} else { 
    if (count($response->ocs->data->users) > 0) {
	echo "no";
	exit;
    } else {
        echo "yes";
        exit;
    }
}

function nextcloud_send($href, $username, $password, $action, $post = array()) {
    $postdata = http_build_query($post);
    $ch = curl_init();

    if (strtoupper($action) == 'GET') {
        curl_setopt($ch, CURLOPT_HTTPGET, true);
    }

    curl_setopt($ch, CURLOPT_URL, $href);
    curl_setopt($ch, CURLOPT_USERPWD, $username . ":" . $password);
    curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
    curl_setopt($ch, CURLOPT_HTTPHEADER, array("Accept: application/json","OCS-APIRequest: true",'content-type: application/x-www-form-urlencoded'));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_TIMEOUT, 60);
    $result_json = curl_exec($ch);
    $httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    curl_close($ch);

    if ($httpcode >= 200 && $httpcode < 300) {
        //print_r($result_json);die();
	$result_bom = nextcloud_remove_utf8bom($result_json);
	$result = json_decode($result_bom);
	return($result);
    } else {
	return null;
    }
}

function nextcloud_remove_utf8bom($text) {
    $bom = pack('H*', 'EFBBBF');
    $text = preg_replace("/^$bom/", '', $text);
    return $text;
}