之前一直有童鞋抱怨说由于忘记为WHMCS续费，导致后台因欠费被禁止登录的问题。
笔者写了一个小工具，用于检查WHMCS授权合法性及最新版本。该工具可与WHMCS同时工作，自动从数据库中读取版本和授权信息，无需人工干预。
部署说明
1. 将LicenseCheck.php保存在WHMCS的根目录下，class.smtp.custom.php保存在/includes/classes下； 2. 根据实际情况修改LicenseCheck.php的高亮代码行； 3. 将LicenseCheck.php添加为计划任务定时执行。 4. 如需禁用该工具，可以在WHMCS的根目录下/configuration.php中增加（设置为true则启用）： $license_check = false;
核心代码
LicenseCheck.php
<?php
debug('License & Updates Checker Initialized.');
require 'init.php';
require 'configuration.php';
if(isset($license_check) && !$license_check){debug('License & Updates Checker is Disabled.');exit;}else RemoteCheck();
function getHosts()
{
$hosts = gethostbynamel('licensing28.whmcs.com');
return $hosts;
}
function getLicenseKey()
{
global $whmcs;
return $whmcs->get_license_key();
}
function getHostIP()
{
return (isset($_SERVER['SERVER_ADDR']) ? $_SERVER['SERVER_ADDR'] : (isset($_SERVER['LOCAL_ADDR']) ? $_SERVER['LOCAL_ADDR'] : ''));
}
function getHostDomain()
{
return $_SERVER['SERVER_NAME'];
}
function getHostDir()
{
return ROOTDIR;
}
function remoteCheck()
{
$postfields = array();
$postfields['licensekey'] = getLicenseKey();
$postfields['domain'] = getHostDomain();
$postfields['ip'] = getHostIP();
$postfields['dir'] = getHostDir();
$postfields['check_token'] = sha1(time() . getLicenseKey() . mt_rand(1000000000, 9999999999));
debug('Performing Remote Check: ' . print_r($postfields, true));
$data = callHome($postfields);
$results = $data;
$posthash = $results['hash'];
unset($results['hash']);
}
function buildQuery($postfields)
{
$query_string = '';
foreach ($postfields as $k => $v) {
$query_string .= '' . $k . '=' . urlencode($v) . '&';
}
return $query_string;
}
function callHome($postfields)
{
$query_string = buildQuery($postfields);
$res = callHomeLoop($query_string, 5);
return $res;
}
function callHomeLoop($query_string, $timeout = 5)
{
$hostips = getHosts();
foreach ($hostips as $hostip) {
$responsecode = makeCall($hostip, $query_string, $timeout);
if ($responsecode == 200) {
break;
}
}
}
function makeCall($licsrv, $query_string, $timeout = 5)
{
global $whmcs,$db_host,$db_username,$db_password,$db_name;
$dbhost=$db_host;
$dbuser=$db_username;
$dbpass=$db_password;
$dbname=$db_name;
$curver=$whmcs->get_config('Version');
$postinfo = array(
CURLOPT_POST => 1,
CURLOPT_HEADER => 0,
CURLOPT_URL => "https://$licsrv/license/verify52.php",
CURLOPT_RETURNTRANSFER => 1,
CURLOPT_TIMEOUT => 5,
CURLOPT_SSL_VERIFYHOST => 0,
CURLOPT_SSL_VERIFYPEER => 0,
CURLOPT_POSTFIELDS => $query_string);
$ch = curl_init();
curl_setopt_array($ch, ($postinfo));
if(!$result = curl_exec($ch))trigger_error(curl_error($ch));
$responsecode=curl_getinfo($ch, CURLINFO_HTTP_CODE);
debug('Response Code: HTTP '.$responsecode);
curl_close($ch);
debug('Curl Returned: '.$result);
$result = strrev($result);
$result = base64_decode($result);
$results = unserialize($result);
$posthash = $results['hash'];
unset($results['hash']);
debug('License Status: '.$results['status']);
if($results['status']<>'Active'){LicenseInvaild($results['status']);return $responsecode;};
debug('Latest Version: '.$results['latestversion']);
if($results['latestversion']>$curver)NewVersion($curver,$results['latestversion']);
debug('License & Updates Checker Exited.');
return $responsecode;
}
function LicenseInvaild($licstatus)
{
$subject = "WHMCS License Error Alert";
$body = "We have detected that your WHMCS License is invaild.<br />License Key: <b>".getLicenseKey()."</b><br />License Status: <b>$licstatus</b><br /><br />Please contact WHMCS as soon as possible to avoid service suspension.";
smtpmail($subject,$body);
debug('License Invaild Alert Email Sent.');
}
function NewVersion($curver,$latestver)
{
$subject = "WHMCS New Version Notification";
$body = "We have released a new version of WHMCS.<br />Latest Version: <b>$latestver</b><br />Current Version: <b>$curver</b><br /><br />Please upgrade your WHMCS to latest version as soon as possible.";
smtpmail($subject,$body);
debug('New Version Notification Email Sent.');
}
function smtpmail($subject,$body)
{
require("includes/classes/class.smtp.custom.php");
$smtpserver = "SMTP SERVER";
$smtpserverport = 25;
$smtpusermail = "SENDER EMAIL";
$smtpemailto = "RECEIVER EMAIL";
$smtpuser = "SENDER USERNAME";
$smtppass = "SENDER PASSWORD";
$mailsubject = $subject;
$mailbody = $body;
$mailtype = "HTML";
$smtp = new smtp($smtpserver,$smtpserverport,true,$smtpuser,$smtppass); // 3rd Parameter: Enable/Disable SMTP Authorization
$smtp->debug = false; // Display/Hide Debug Information WARNING: SET TO FALSE IN LIVE USE
$smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, $mailtype);
}
function debug($msg)
{
echo "[".date("Y-m-d H:i:s")."] ".$msg."<br />"; // WARNING: COMMENT THIS LINE IN LIVE USE
}
?>
class.smtp.custom.php
<?php
error_reporting(0);
class smtp
{
/* Public Variables */
var $smtp_port;
var $time_out;
var $host_name;
var $log_file;
var $relay_host;
var $debug;
var $auth;
var $user;
var $pass;
/* Private Variables */
var $sock;
/* Constractor */
function smtp($relay_host = "", $smtp_port = 25,$auth = false,$user,$pass)
{
$this->debug = FALSE;
$this->smtp_port = $smtp_port;
$this->relay_host = $relay_host;
$this->time_out = 30; //is used in fsockopen()
$this->auth = $auth;//auth
$this->user = $user;
$this->pass = $pass;
$this->host_name = "localhost"; //is used in HELO command
$this->log_file = "";
$this->sock = FALSE;
}
/* Main Function */
function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "")
{
$mail_from = $this->get_address($this->strip_comment($from));
$body = ereg_replace("(^|(\r\n))(\.)", "\1.\3", $body);
$header .= "MIME-Version:1.0\r\n";
if($mailtype=="HTML")
{
$header .= "Content-Type:text/html\r\n";
}
$header .= "To: ".$to."\r\n";
if ($cc != "")
{
$header .= "Cc: ".$cc."\r\n";
}
$header .= "From: $from<".$from.">\r\n";
$header .= "Subject: ".$subject."\r\n";
$header .= $additional_headers;
$header .= "Date: ".date("r")."\r\n";
$header .= "X-Mailer:By Redhat (PHP/".phpversion().")\r\n";
list($msec, $sec) = explode(" ", microtime());
$header .= "Message-ID: <".date("YmdHis", $sec).".".($msec*1000000).".".$mail_from.">\r\n";
$TO = explode(",", $this->strip_comment($to));
if ($cc != "")
{
$TO = array_merge($TO, explode(",", $this->strip_comment($cc)));
}
if ($bcc != "")
{
$TO = array_merge($TO, explode(",", $this->strip_comment($bcc)));
}
$sent = TRUE;
foreach ($TO as $rcpt_to)
{
$rcpt_to = $this->get_address($rcpt_to);
if (!$this->smtp_sockopen($rcpt_to))
{
$this->log_write("Error: Cannot send email to ".$rcpt_to."\n");
$sent = FALSE;
continue;
}
if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body))
{
$this->log_write("E-mail has been sent to <".$rcpt_to.">\n");
}
else
{
$this->log_write("Error: Cannot send email to <".$rcpt_to.">\n");
$sent = FALSE;
}
fclose($this->sock);
$this->log_write("Disconnected from remote host\n");
}
return $sent;
}
/* Private Functions */
function smtp_send($helo, $from, $to, $header, $body = "")
{
if (!$this->smtp_putcmd("HELO", $helo))
{
return $this->smtp_error("sending HELO command");
}
#auth
if($this->auth)
{
if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user)))
{
return $this->smtp_error("sending HELO command");
}
if (!$this->smtp_putcmd("", base64_encode($this->pass)))
{
return $this->smtp_error("sending HELO command");
}
}
if (!$this->smtp_putcmd("MAIL", "FROM:<".$from.">"))
{
return $this->smtp_error("sending MAIL FROM command");
}
if (!$this->smtp_putcmd("RCPT", "TO:<".$to.">"))
{
return $this->smtp_error("sending RCPT TO command");
}
if (!$this->smtp_putcmd("DATA"))
{
return $this->smtp_error("sending DATA command");
}
if (!$this->smtp_message($header, $body))
{
return $this->smtp_error("sending message");
}
if (!$this->smtp_eom())
{
return $this->smtp_error("sending <CR><LF>.<CR><LF> [EOM]");
}
if (!$this->smtp_putcmd("QUIT"))
{
return $this->smtp_error("sending QUIT command");
}
return TRUE;
}
function smtp_sockopen($address)
{
if ($this->relay_host == "")
{
return $this->smtp_sockopen_mx($address);
}
else
{
return $this->smtp_sockopen_relay();
}
}
function smtp_sockopen_relay()
{
$this->log_write("Trying to ".$this->relay_host.":".$this->smtp_port."\n");
$this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);
if (!($this->sock && $this->smtp_ok()))
{
$this->log_write("Error: Cannot connenct to relay host ".$this->relay_host."\n");
$this->log_write("Error: ".$errstr." (".$errno.")\n");
return FALSE;
}
$this->log_write("Connected to relay host ".$this->relay_host."\n");
return TRUE;;
}
function smtp_sockopen_mx($address)
{
$domain = ereg_replace("^.+@([^@]+)$", "\1", $address);
if (!@getmxrr($domain, $MXHOSTS))
{
$this->log_write("Error: Cannot resolve MX \"".$domain."\"\n");
return FALSE;
}
foreach ($MXHOSTS as $host)
{
$this->log_write("Trying to ".$host.":".$this->smtp_port."\n");
$this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);
if (!($this->sock && $this->smtp_ok()))
{
$this->log_write("Warning: Cannot connect to mx host ".$host."\n");
$this->log_write("Error: ".$errstr." (".$errno.")\n");
continue;
}
$this->log_write("Connected to mx host ".$host."\n");
return TRUE;
}
$this->log_write("Error: Cannot connect to any mx hosts (".implode(", ", $MXHOSTS).")\n");
return FALSE;
}
function smtp_message($header, $body)
{
fputs($this->sock, $header."\r\n".$body);
$this->smtp_debug("> ".str_replace("\r\n", "\n"."> ", $header."\n> ".$body."\n> "));
return TRUE;
}
function smtp_eom()
{
fputs($this->sock, "\r\n.\r\n");
$this->smtp_debug(". [EOM]\n");
return $this->smtp_ok();
}
function smtp_ok()
{
$response = str_replace("\r\n", "", fgets($this->sock, 512));
$this->smtp_debug($response."\n");
if (!ereg("^[23]", $response))
{
fputs($this->sock, "QUIT\r\n");
fgets($this->sock, 512);
$this->log_write("Error: Remote host returned \"".$response."\"\n");
return FALSE;
}
return TRUE;
}
function smtp_putcmd($cmd, $arg = "")
{
if ($arg != "")
{
if($cmd=="")
{
$cmd = $arg;
}
else
{
$cmd = $cmd." ".$arg;
}
}
fputs($this->sock, $cmd."\r\n");
$this->smtp_debug("> ".$cmd."\n");
return $this->smtp_ok();
}
function smtp_error($string)
{
$this->log_write("Error: Error occurred while ".$string.".\n");
return FALSE;
}
function log_write($message)
{
$this->smtp_debug($message);
if ($this->log_file == "")
{
return TRUE;
}
$message = date("M d H:i:s ").get_current_user()."[".getmypid()."]: ".$message;
if (!@file_exists($this->log_file) || !($fp = @fopen($this->log_file, "a")))
{
$this->smtp_debug("Warning: Cannot open log file \"".$this->log_file."\"\n");
return FALSE;;
}
flock($fp, LOCK_EX);
fputs($fp, $message);
fclose($fp);
return TRUE;
}
function strip_comment($address)
{
$comment = "\([^()]*\)";
while (ereg($comment, $address))
{
$address = ereg_replace($comment, "", $address);
}
return $address;
}
function get_address($address)
{
$address = ereg_replace("([ \t\r\n])+", "", $address);
$address = ereg_replace("^.*<(.+)>.*$", "\1", $address);
return $address;
}
function smtp_debug($message)
{
if ($this->debug)
{
echo $message;
}
}
}
?>
PS：弱弱地说一句，LicenseCheck.php可有其他用途
