diff --git a/backend/kms-check.php b/backend/kms-check.php
deleted file mode 100644
index 819d6a1..0000000
--- a/backend/kms-check.php
+++ /dev/null
@@ -1,60 +0,0 @@
-<?php
-
-function checkKms($config) { // 检测KMS服务器是否可用
-    if (isset($config['host'])) {
-        $host = $config['host'];
-    } else { // host参数必选
-        return array(
-            'status' => 'error',
-            'message' => 'host param not exist'
-        );
-    }
-    if (isset($config['port'])) {
-        $port = $config['port'];
-    } else {
-        $port = 1688; // 默认KMS端口
-    }
-    if (isset($config['site']) && $config['site'] !== '') {
-        $site = $config['site'];
-    } else {
-        $site = null; // site参数可选
-    }
-    $cmd = 'vlmcs '; // 生成vlmcs测试命令
-    if (isDomain($host) || isIPv4($host)) {
-        $cmd .= $host;
-    } else if (isIPv6($host)) {
-        $cmd .= '[' . $host . ']'; // IPv6地址需用中括号包围
-    } else {
-        return array( // host内容不是 IPv4/IPv6/Domain
-            'status' => 'error',
-            'message' => 'illegal host'
-        );
-    }
-    if ($port > 65535 || $port < 0) { // 端口不存在
-        return array(
-            'status' => 'error',
-            'message' => 'illegal port'
-        );
-    } else {
-        $cmd .= ':' . $port; // 命令中加入端口信息
-    }
-    if ($site !== null) {
-        $cmd .= ' -w ' . $site; // 加入site参数
-    }
-    $cmd .= ' -G temp';
-    $raw = shell_exec($cmd); // 执行vlmcs测试
-    preg_match_all('/Sending activation request \(KMS V6\)/', $raw, $match);
-    if (count($match[0]) == 6) { // KMS服务器连接成功
-        return array(
-            'status' => 'ok',
-            'message' => 'success'
-        );
-    } else { // KMS服务器连接异常
-        return array(
-            'status' => 'error',
-            'message' => 'connect fail'
-        );
-    }
-}
-
-?>
diff --git a/backend/kms-cli.php b/backend/kms-cli.php
deleted file mode 100644
index bcc01ec..0000000
--- a/backend/kms-cli.php
+++ /dev/null
@@ -1,52 +0,0 @@
-<?php
-
-// 请求方式：showWinKeys() | showWinServerKeys()
-
-require_once 'kms-keys.php';
-
-function show($str) { // GBK兼容
-    global $gbk;
-    if ($gbk) {
-        return iconv('utf-8', 'gb2312', $str);
-    } else {
-        return $str;
-    }
-}
-
-function showVersion($title, $content) { // 表格形式显示
-    $length = 0;
-    foreach ($content as $row) { // 获取最长的字符串长度
-        $strLength = strlen(iconv('utf-8', 'gb2312', $row['name']));
-        if ($length < $strLength) {
-            $length = $strLength;
-        }
-    }
-    $strLength = strlen(iconv('utf-8', 'gb2312', $title)); // 获取标题长度
-    echo str_pad('', floor(($length - $strLength + 36) / 2), ' ') . show($title) . PHP_EOL; // 居中输出标题
-    echo '┏' . str_pad('', $length + 34, '-') . '┓' . PHP_EOL;
-    foreach ($content as $row) { // 显示表格主体
-        $strLength = strlen(iconv('utf-8', 'gb2312', $row['name']));
-        echo '| ' . show($row['name']) . str_pad('', $length - $strLength, ' ') . ' | ';
-        echo $row['key'] . ' |' . PHP_EOL;
-    }
-    echo '┗' . str_pad('', $length + 34, '-') . '┛' . PHP_EOL;
-}
-
-function showKmsKeys($kmsKeys) { // 命令行显示KMS密钥
-    foreach ($kmsKeys as $versionName => $versionContent) {
-        echo PHP_EOL;
-        showVersion($versionName, $versionContent); // 逐个显示表格
-    }
-}
-
-function showWinKeys() { // 显示Windows的KMS密钥
-    $kmsKeys = getKmsKeys('win');
-    showKmsKeys($kmsKeys);
-}
-
-function showWinServerKeys() { // 显示Windows Server的KMS密钥
-    $kmsKeys = array_reverse(getKmsKeys('win-server'));
-    showKmsKeys($kmsKeys);
-}
-
-?>
diff --git a/backend/kms-help.php b/backend/kms-help.php
deleted file mode 100644
index c6152bb..0000000
--- a/backend/kms-help.php
+++ /dev/null
@@ -1,47 +0,0 @@
-<?php
-
-function showHelp() {
-    global $webSite;
-    $length = strlen($webSite);
-    echo PHP_EOL;
-    echo str_pad('', floor(($length - 2) / 2), ' ') . 'Activation Command' . PHP_EOL;
-    echo '┏' . str_pad('', $length + 14, '-') . '┓' . PHP_EOL;
-    echo '| slmgr /upk' . str_pad('', $length + 3, ' ') . '|' . PHP_EOL;
-    echo '| slmgr /ipk {KMS_KEY}' . str_pad('', $length - 7, ' ') . '|' . PHP_EOL;
-    echo '| slmgr /skms ' . $webSite . ' |' . PHP_EOL;
-    echo '| slmgr /ato' . str_pad('', $length + 3, ' ') . '|' . PHP_EOL;
-    echo '| slmgr /dlv' . str_pad('', $length + 3, ' ') . '|' . PHP_EOL;
-    echo '┗' . str_pad('', $length + 14, '-') . '┛' . PHP_EOL;
-    echo PHP_EOL;
-    echo 'Office -> http://' . $webSite . '/office' . PHP_EOL;
-    echo PHP_EOL;
-    echo 'KMS_KEY -> http://' . $webSite . '/win' . PHP_EOL;
-    echo '        -> http://' . $webSite . '/win-server' . PHP_EOL;
-    echo PHP_EOL;
-    echo 'KMS_KEY(GBK) -> http://' . $webSite . '/win/gbk' . PHP_EOL;
-    echo '             -> http://' . $webSite . '/win-server/gbk' . PHP_EOL;
-    echo PHP_EOL;
-}
-
-function webHelp() {
-    global $webSite;
-    echo '<!DOCTYPE html><html><head><meta charset="utf-8">';
-    echo '<meta name="viewport" content="width=device-width, initial-scale=1.0"><title>';
-    echo 'Windows Activation';
-    echo '</title><link rel="stylesheet" href="./assets/style.css" /></head>';
-    echo '<body><div><h2>Windows KMS Activation</h2><pre>';
-    echo '<code> slmgr /upk' . PHP_EOL;
-    echo ' slmgr /ipk {KMS_KEY}' . PHP_EOL;
-    echo ' slmgr /skms ' . $webSite . PHP_EOL;
-    echo ' slmgr /ato' . PHP_EOL;
-    echo ' slmgr /dlv </code>';
-    echo '</pre><p><a href="';
-    echo 'http://' . $webSite . '/office';
-    echo '">KMS (Office)</a><br><a href="';
-    echo 'http://' . $webSite . '/win';
-    echo '">KMS_KEY (Windows)</a><br><a href="';
-    echo 'http://' . $webSite . '/win-server';
-    echo '">KMS_KEY (Windows Server)</a></p></div></body></html>';
-}
-
-?>
diff --git a/backend/kms-keys.db b/backend/kms-keys.db
deleted file mode 100644
index 3b7f403..0000000
Binary files a/backend/kms-keys.db and /dev/null differ
diff --git a/backend/kms-keys.php b/backend/kms-keys.php
deleted file mode 100644
index 2482a3f..0000000
--- a/backend/kms-keys.php
+++ /dev/null
@@ -1,43 +0,0 @@
-<?php
-
-// 数据来源：kms-keys.db
-// 请求方式：getKmsKeys($type)
-// 返回格式：
-// {
-//   "version_1": [
-//     {
-//       "name": 版本名称
-//       "key": KMS密钥
-//     },
-//     ···
-//   ],
-//   "version_2": [
-//     ···
-//   ],
-//   ···
-// }
-
-class kmsDB extends SQLite3 {
-    function __construct() {
-        $this->open('kms-keys.db'); // KMS密钥数据库
-    }
-}
-
-function getVersionName($type, $version_id) { // 获取对应版本的名称
-    $db = new kmsDB;
-    $res = $db->query('SELECT * FROM `' . $type . '_version` WHERE version_id=' . $version_id . ';');
-    return  $res->fetchArray(SQLITE3_ASSOC)['version_name'];
-}
-
-function getKmsKeys($type) { // 获取所有版本的KMS密钥
-    $db = new kmsDB;
-    $res = $db->query('SELECT * FROM `' . $type . '`;');
-    while ($row = $res->fetchArray(SQLITE3_ASSOC)) {
-        $index = $row['version'];
-        unset($row['version']);
-        $data[getVersionName($type, $index)][] = $row;
-    }
-    return $data;
-}
-
-?>
diff --git a/backend/kms-office.php b/backend/kms-office.php
deleted file mode 100644
index 8f4dff6..0000000
--- a/backend/kms-office.php
+++ /dev/null
@@ -1,116 +0,0 @@
-<?php
-
-$office['2010'] = 'if exist "%ProgramFiles%\Microsoft Office\Office14\ospp.vbs" cd /d "%ProgramFiles%\Microsoft Office\Office14"
-if exist "%ProgramFiles(x86)%\Microsoft Office\Office14\ospp.vbs" cd /d "%ProgramFiles(x86)%\Microsoft Office\Office14"
-cscript ospp.vbs /inpkey:VYBBJ-TRJPB-QFQRF-QFT4D-H3GVB';
-
-$office['2013'] = 'if exist "%ProgramFiles%\Microsoft Office\Office15\ospp.vbs" cd /d "%ProgramFiles%\Microsoft Office\Office15"
-if exist "%ProgramFiles(x86)%\Microsoft Office\Office15\ospp.vbs" cd /d "%ProgramFiles(x86)%\Microsoft Office\Office15"
-cscript ospp.vbs /inpkey:YC7DK-G2NP3-2QQC3-J6H88-GVGXT';
-
-$office['2016'] = 'if exist "%ProgramFiles%\Microsoft Office\Office16\ospp.vbs" cd /d "%ProgramFiles%\Microsoft Office\Office16"
-if exist "%ProgramFiles(x86)%\Microsoft Office\Office16\ospp.vbs" cd /d "%ProgramFiles(x86)%\Microsoft Office\Office16"
-cscript ospp.vbs /inpkey:XQNVK-8JYDB-WJ9W3-YJ8YR-WFG99';
-
-$office['2019'] = 'if exist "%ProgramFiles%\Microsoft Office\Office16\ospp.vbs" cd /d "%ProgramFiles%\Microsoft Office\Office16"
-if exist "%ProgramFiles(x86)%\Microsoft Office\Office16\ospp.vbs" cd /d "%ProgramFiles(x86)%\Microsoft Office\Office16"
-cscript ospp.vbs /inpkey:NMMKJ-6RK4F-KMJVX-8D9MJ-6MWKP';
-
-function loadOsppInfo() { // 初始化ospp信息
-    global $kmsHost;
-    global $osppOption, $osppDescription, $osppDescriptionCn;
-
-    $osppOption[] = '/dstatus';
-    $osppDescription[] = 'Displays license information for installed product keys.';
-    $osppDescriptionCn[] = '显示当前已安装产品密钥的许可证信息';
-
-    $osppOption[] = '/dstatusall';
-    $osppDescription[] = 'Displays license information for all installed licenses.';
-    $osppDescriptionCn[] = '显示当前已安装的所有许可证信息';
-
-    $osppOption[] = '/unpkey:XXXXX';
-    $osppDescription[] = 'Uninstalls an product key with the last five digits of it.';
-    $osppDescriptionCn[] = '卸载已安装的产品密钥（最后5位）';
-
-    $osppOption[] = '/inpkey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX';
-    $osppDescription[] = 'Installs a product key with a user-provided product key.';
-    $osppDescriptionCn[] = '安装产品密钥';
-
-    $osppOption[] = '/sethst:' . $kmsHost;
-    $osppDescription[] = 'Sets a KMS host name with a user-provided host name.';
-    $osppDescriptionCn[] = '设置 KMS 主机名';
-
-    $osppOption[] = '/remhst';
-    $osppDescription[] = 'Removes KMS host name and sets port to default.';
-    $osppDescriptionCn[] = '删除 KMS 主机名';
-
-    $osppOption[] = '/act';
-    $osppDescription[] = 'Activates installed Office product keys.';
-    $osppDescriptionCn[] = '激活 Office';
-}
-
-function loadOfficeCmd() { // 初始化Office激活命令
-    global $kmsHost, $office;
-    $activeCmd = 'cscript ospp.vbs /sethst:' . $kmsHost . PHP_EOL . 'cscript ospp.vbs /act';
-    $activeCmd .= PHP_EOL . 'cscript ospp.vbs /dstatus' . PHP_EOL;
-    foreach ($office as $index => $officeKmsCmd) {
-        $office[$index] .= PHP_EOL . $activeCmd;
-    }
-}
-
-function showOfficeHelp() { // 命令行输出Office激活帮助
-    loadOsppInfo();
-    loadOfficeCmd();
-    global $office, $osppOption, $osppDescription, $osppDescriptionCn;
-    echo PHP_EOL;
-    foreach ($office as $index => $officeKmsCmd) {
-        echo str_pad('', 34, ' ') . 'Office Professional Plus ' . $index . ' VL Activation Command' . PHP_EOL;
-        echo str_pad('', 120, '-') . PHP_EOL;
-        echo $officeKmsCmd;
-        echo str_pad('', 120, '-') . PHP_EOL . PHP_EOL;
-    }
-    $length = 0;
-    $length_first = 0;
-    foreach ($osppOption as $index => $option) { // 获取最长的字符串长度
-        $strLength = strlen($option) + strlen($osppDescription[$index]);
-        if ($length < $strLength) {
-            $length = $strLength;
-            $length_first = strlen($option);
-        }
-    }
-    $title = 'Common activation commands';
-    echo str_pad('', floor(($length - strlen($title) + 26) / 2), ' ') . $title . PHP_EOL;
-    echo '┏' . str_pad('', $length + 24, '-') . '┓' . PHP_EOL;
-    foreach ($osppOption as $index => $option) {
-        echo '| cscript ospp.vbs ' . str_pad($osppOption[$index], $length_first, ' ') . ' | ';
-        echo str_pad($osppDescription[$index], $length - $length_first + 2, ' ') . ' |' . PHP_EOL;
-    }
-    echo '┗' . str_pad('', $length + 24, '-') . '┛' . PHP_EOL . PHP_EOL;
-    echo 'These commands are only applicable to the VL version of Office.' . PHP_EOL;
-    echo 'If it is a Retail version, please convert it to Volume first.' . PHP_EOL . PHP_EOL;
-}
-
-function webOfficeHelp() { // 网页输出Office激活帮助
-    loadOsppInfo();
-    loadOfficeCmd();
-    global $office, $osppOption, $osppDescription, $osppDescriptionCn;
-    echo '<!DOCTYPE html><html><head><meta charset="utf-8">';
-    echo '<meta name="viewport" content="width=device-width, initial-scale=1.0"><title>';
-    echo 'Office KMS Server';
-    echo '</title><link rel="stylesheet" href="./assets/style.css" /></head><body><div>';
-    foreach ($office as $officeVersion => $officeKmsCmd) {
-        echo '<h2>Office Professional Plus ' . $officeVersion . ' VL</h2>' . PHP_EOL;
-        echo '<pre><code>' . $officeKmsCmd . '</code></pre>' . PHP_EOL;
-    }
-    echo '<h2>常用激活命令</h2>' . PHP_EOL;
-    echo '<table><thead><tr><th>命令</th><th>说明</th></tr></thead><tbody>';
-    foreach ($osppOption as $index => $option) {
-        echo '<tr><td>cscript ospp.vbs ' . $option . '</td>';
-        echo '<td>' . $osppDescriptionCn[$index] . '</td></tr>';
-    }
-    echo '</tbody></table><br>' . PHP_EOL;
-    echo '<p>以上命令仅用于激活VL版本的Office，如果当前为Retail版本，请先转化为批量授权版本。</p>' . PHP_EOL;
-    echo '</div></body></html>';
-}
-
-?>
diff --git a/backend/kms-web.php b/backend/kms-web.php
deleted file mode 100644
index c7b6bf2..0000000
--- a/backend/kms-web.php
+++ /dev/null
@@ -1,34 +0,0 @@
-<?php
-
-// 请求方式：webWinKeys() | webWinServerKeys()
-
-require_once 'kms-keys.php';
-
-function webKmsKeys($kmsKeys, $title) { // 网页显示KMS密钥
-    echo '<!DOCTYPE html><html><head><meta charset="utf-8">';
-    echo '<meta name="viewport" content="width=device-width, initial-scale=1.0"><title>';
-    echo $title;
-    echo '</title><link rel="stylesheet" href="./assets/style.css" /></head><body><div>';
-    foreach ($kmsKeys as $versionName => $versionContent) {
-        echo '<h2>' . $versionName . '</h2>';
-        echo '<table><thead><tr><th>操作系统</th><th>KMS密钥</th></tr></thead><tbody>';
-        foreach ($versionContent as $row) {
-            echo '<tr><td>' . $row['name'] . '</td>';
-            echo '<td>' . $row['key'] . '</td></tr>';
-        }
-        echo '</tbody></table>';
-    }
-    echo '</div></body></html>';
-}
-
-function webWinKeys() { // 网页显示Windows的KMS密钥
-    $kmsKeys = getKmsKeys('win');
-    webKmsKeys($kmsKeys, 'Windows KMS Keys');
-}
-
-function webWinServerKeys() { // 网页显示Windows Server的KMS密钥
-    $kmsKeys = array_reverse(getKmsKeys('win-server'));
-    webKmsKeys($kmsKeys, 'Windows Server KMS Keys');
-}
-
-?>
diff --git a/backend/route.php b/backend/route.php
deleted file mode 100644
index 5a545e3..0000000
--- a/backend/route.php
+++ /dev/null
@@ -1,131 +0,0 @@
-<?php
-
-include 'kms-cli.php';
-include 'kms-web.php';
-include 'kms-help.php';
-include 'kms-office.php';
-include 'kms-check.php';
-
-function isDomain($domain) {
-    preg_match('/^(?=^.{3,255}$)[a-zA-Z0-9][-a-zA-Z0-9]{0,62}(\.[a-zA-Z0-9][-a-zA-Z0-9]{0,62})+$/', $domain, $match);
-    return (count($match) != 0);
-}
-
-function isIPv4($ip) {
-    return filter_var($ip, \FILTER_VALIDATE_IP, \FILTER_FLAG_IPV4);
-}
-
-function isIPv6($ip) {
-    return filter_var($ip, \FILTER_VALIDATE_IP, \FILTER_FLAG_IPV6);
-}
-
-$kmsHost = "{KMS_HOST}";
-$webSite = $kmsHost;
-if (isset($_SERVER['HTTP_HOST'])) { // 获取服务URL
-    $webSite = $_SERVER['HTTP_HOST'];
-}
-if (isDomain($webSite) || isIPv4($webSite)) { // URL为域名或者IPv4地址
-    $kmsHost = $webSite;
-} else {
-    preg_match('/^[a-zA-Z0-9.-]*/', $webSite, $match);
-    if (count($match) != 0) {
-        if (isDomain($match[0]) || isIPv4($match[0])) { // 去除端口后为域名或者IPv4地址
-            if ($match[0] != '127.0.0.1') { // 排除本地IP
-                $kmsHost = $match[0];
-            }
-        }
-    }
-}
-
-$url = $_SERVER['DOCUMENT_URI'];
-$gbk = false;
-
-if ($url == '/' || $url == '/help') { // 操作提示
-    if ($_GET['cli'] == 'true') {
-        showHelp();
-    } else {
-        webHelp();
-    }
-    exit;
-}
-
-if ($url == '/office') { // office激活帮助
-    if ($_GET['cli'] == 'true') {
-        showOfficeHelp();
-    } else {
-        webOfficeHelp();
-    }
-    exit;
-}
-
-if ($url == '/win') { // KMS密钥获取
-    if ($_GET['cli'] == 'true') {
-        showWinKeys();
-    } else {
-        webWinKeys();
-    }
-    exit;
-}
-if ($url == '/win-server') {
-    if ($_GET['cli'] == 'true') {
-        showWinServerKeys();
-    } else {
-        webWinServerKeys();
-    }
-    exit;
-}
-
-if ($url == '/win/gbk') { // KMS密钥获取(GBK兼容)
-    if ($_GET['cli'] == 'true') {
-        $gbk = true;
-        showWinKeys();
-    } else {
-        header('HTTP/1.1 302 Moved Temporarily');
-        header('Location: /win');
-    }
-    exit;
-}
-if ($url == '/win-server/gbk') {
-    if ($_GET['cli'] == 'true') {
-        $gbk = true;
-        showWinServerKeys();
-    } else {
-        header('HTTP/1.1 302 Moved Temporarily');
-        header('Location: /win-server');
-    }
-    exit;
-}
-
-if ($url == '/json') { // JSON格式获取KMS密钥
-    header('Content-Type: application/json; charset=utf-8');
-    $kmsKeys = getKmsKeys('win') + getKmsKeys('win-server');
-    echo json_encode($kmsKeys);
-    exit;
-}
-if ($url == '/win/json') {
-    header('Content-Type: application/json; charset=utf-8');
-    $kmsKeys = getKmsKeys('win');
-    echo json_encode($kmsKeys);
-    exit;
-}
-if ($url == '/win-server/json') {
-    header('Content-Type: application/json; charset=utf-8');
-    $kmsKeys = getKmsKeys('win-server');
-    echo json_encode($kmsKeys);
-    exit;
-}
-
-if ($url == '/check') {
-    header('Content-Type: application/json; charset=utf-8');
-    echo json_encode(checkKms($_GET));
-    exit;
-}
-
-if ($_GET['cli'] == 'true') { // 无效请求
-    echo 'Illegal Request' . PHP_EOL;
-} else {
-    header('Content-Type: application/json; charset=utf-8');
-    echo '{"status":"error","message":"Illegal Request"}';
-}
-
-?>