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index.php
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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>阅后即焚</title>
<script src="https://cdn.tailwindcss.com"></script>
<script src="https://cdn.jsdelivr.net/npm/marked/marked.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css"
integrity="sha512-9usAa10IRO0HhonpyAIVpjrylPvoDwiPUiKdWk5t3PyolY1cOd4DSEqGa+ri4AuTroPR5aQvXU9xC6qOPnzFeg=="
crossorigin="anonymous" referrerpolicy="no-referrer" />
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/katex.min.css" integrity="sha384-n8MVd4RsNIU0tAv4ct0nTaAbDJwPJzDEaqSD1odI+WdtXRGWt2kTvGFasHpSy3SV" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/katex.min.js" integrity="sha384-XjKyOOlGwcjNTAIQHIpgOno0Hl1YQqzUOEleOLALmuqehneUG+vnGctmUb0ZY0l8" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/contrib/auto-render.min.js" integrity="sha384-+VBxd3r6XgURycqtZ117nYw44OOcIax56Z4dCRWbxyPt0Koah1uHoK0o4+/RRE05" crossorigin="anonymous"></script>
<?php
$envFile = parse_ini_file(__DIR__ . '/.env');
$encryptionKeyFromEnv = $envFile['ENCRYPTION_KEY'];
$siteIcon = $envFile['SITE_ICON'];
$siteDomain = $envFile['SITE_DOMAIN'];
$messageExpiry = isset($envFile['MESSAGE_EXPIRY']) ? $envFile['MESSAGE_EXPIRY'] : '7:0:0:0';
list($days, $hours, $minutes, $seconds) = array_pad(explode(':', $messageExpiry), 4, 0);
$expirySeconds = ($days * 24 * 60 * 60) + ($hours * 60 * 60) + ($minutes * 60) + $seconds;
if (!empty($siteIcon)) {
if (str_starts_with($siteIcon, 'data:image')) {
echo '<link rel="icon" href="' . htmlspecialchars($siteIcon) . '">';
} else {
echo '<link rel="icon" href="' . htmlspecialchars($siteIcon) . '" type="image/x-icon">';
}
}
?>
<style>
.message-box {
border: 1px solid #e2e8f0;
padding: 20px;
border-radius: 15px;
box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
background-color: #ffffff;
width: calc(100% - 2rem);
max-width: 800px;
margin: 1rem auto;
box-sizing: border-box;
}
.sender-info {
font-size: 1rem;
color: #4B5563;
margin-bottom: 1.5rem;
padding: 0.75rem 1rem;
background: #F3F4F6;
border-radius: 8px;
display: flex;
align-items: center;
gap: 0.5rem;
}
.sender-info i {
color: #6B7280;
}
.content-box-wrapper {
background: #F9FAFB;
border-radius: 12px;
padding: 1rem;
display: flex;
flex-direction: column;
gap: 1rem;
}
.options-container {
display: flex;
flex-wrap: wrap;
gap: 1rem;
margin-bottom: 1rem;
padding: 0.5rem;
background: #FFFFFF;
border-radius: 8px;
border: 1px solid #E5E7EB;
}
.option-item {
display: flex;
align-items: center;
gap: 0.5rem;
padding: 0.25rem 0.5rem;
background: #F3F4F6;
border-radius: 6px;
cursor: pointer;
}
.option-item:hover {
background: #E5E7EB;
}
.option-item input[type="checkbox"] {
cursor: pointer;
}
.option-item label {
cursor: pointer;
user-select: none;
font-size: 0.875rem;
color: #4B5563;
}
.content-box {
background: #FFFFFF;
border: 1px solid #E5E7EB;
border-radius: 8px;
padding: 1rem;
font-size: 0.875rem;
line-height: 1.6;
overflow-x: auto;
height: 500px;
overflow-y: auto;
transition: height 0.3s ease;
}
.content-box #displayContent {
white-space: pre-wrap;
word-wrap: break-word;
word-break: break-word;
}
.content-box.markdown-mode #displayContent {
white-space: normal;
}
.content-box.auto-height {
height: auto;
max-height: none;
}
.content-box pre {
background: #F3F4F6;
padding: 1rem;
border-radius: 6px;
overflow-x: auto;
}
.content-box code {
background: #F3F4F6;
padding: 0.2rem 0.4rem;
border-radius: 4px;
font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}
.content-box img {
max-width: 100%;
height: auto;
border-radius: 4px;
}
.content-box blockquote {
border-left: 4px solid #E5E7EB;
padding-left: 1rem;
margin: 1rem 0;
color: #4B5563;
}
.content-box table {
border-collapse: collapse;
width: 100%;
margin: 1rem 0;
}
.content-box th,
.content-box td {
border: 1px solid #E5E7EB;
padding: 0.5rem;
text-align: left;
}
.content-box th {
background: #F9FAFB;
}
.option-item {
display: inline-flex;
align-items: center;
padding: 0.5rem 0.75rem;
background: #F3F4F6;
border: 1px solid #E5E7EB;
border-radius: 6px;
cursor: pointer;
user-select: none;
transition: all 0.2s;
}
.option-item:hover {
background: #E5E7EB;
}
.option-item.active {
background: #EFF6FF;
border-color: #93C5FD;
color: #2563EB;
}
.option-item input[type="checkbox"] {
margin-right: 0.5rem;
cursor: pointer;
}
.copy-button {
display: flex;
align-items: center;
justify-content: center;
gap: 0.5rem;
width: 100%;
padding: 0.75rem 1rem;
background-color: #3B82F6;
color: white;
border: none;
border-radius: 0.5rem;
font-size: 0.875rem;
font-weight: 500;
cursor: pointer;
transition: all 0.2s;
}
.copy-button:hover {
background-color: #2563EB;
}
.copy-button.copied {
background-color: #059669;
}
.copy-button.copied .fa-copy {
display: none;
}
.message-success-container .copy-button.copied span::before {
content: '已复制';
}
.message-success-container .copy-button span::before {
content: '复制链接';
}
.content-box-wrapper .copy-button.copied span::before {
content: '已复制';
}
.content-box-wrapper .copy-button span::before {
content: '复制内容';
}
.copy-feedback {
position: fixed;
top: 1rem;
left: 50%;
transform: translateX(-50%) translateY(-1rem);
background: #3B82F6;
color: white;
padding: 0.75rem 1.5rem;
border-radius: 9999px;
font-size: 0.875rem;
font-weight: 500;
opacity: 0;
transition: opacity 0.3s, visibility 0.3s;
z-index: 50;
pointer-events: none;
box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
display: flex;
align-items: center;
gap: 0.5rem;
}
.copy-feedback.show {
opacity: 1;
transform: translateX(-50%) translateY(0);
}
.message-link {
color: #2563eb;
font-weight: bold;
text-decoration: underline;
word-break: break-all;
}
.message-link-container {
background: linear-gradient(135deg, #EFF6FF 0%, #E0F2FE 100%);
padding: 2rem;
border-radius: 1rem;
margin: 2rem auto;
border: 1px solid rgba(96, 165, 250, 0.3);
text-align: center;
max-width: 800px;
box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
position: relative;
overflow: hidden;
}
.message-link-container::before {
content: '';
position: absolute;
top: 0;
left: 0;
right: 0;
height: 4px;
background: linear-gradient(90deg, #60A5FA, #3B82F6);
border-radius: 4px 4px 0 0;
}
.message-link-container h2 {
color: #1E40AF;
font-size: 1.5rem;
font-weight: 600;
margin-bottom: 1.5rem;
}
.message-link-container .link-wrapper {
background: white;
border: 1px solid #E5E7EB;
border-radius: 0.75rem;
padding: 1rem;
margin: 1rem 0;
position: relative;
display: flex;
align-items: center;
gap: 0.5rem;
box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}
.message-link-container #messageLink {
color: #2563EB;
font-size: 1rem;
font-family: ui-monospace, monospace;
word-break: break-all;
flex: 1;
text-align: left;
padding: 0.5rem;
background: #F8FAFC;
border-radius: 0.5rem;
border: 1px solid #E5E7EB;
cursor: text;
user-select: all;
transition: all 0.2s ease;
}
.message-link-container #messageLink:hover {
background: #F1F5F9;
}
.copy-actions {
display: flex;
gap: 0.5rem;
margin-top: 1rem;
justify-content: center;
}
.copy-button {
display: inline-flex;
align-items: center;
gap: 0.5rem;
background-color: #3B82F6;
color: white;
padding: 0.75rem 1.5rem;
border-radius: 0.75rem;
font-weight: 500;
cursor: pointer;
transition: all 0.2s ease;
border: none;
font-size: 0.875rem;
}
.copy-button:hover {
background-color: #2563eb;
}
.copy-button.copied {
background-color: #059669;
}
.copy-button i {
font-size: 1rem;
}
.copy-feedback {
position: fixed;
top: 1rem;
left: 50%;
transform: translateX(-50%) translateY(-1rem);
background: #3B82F6;
color: white;
padding: 0.75rem 1.5rem;
border-radius: 9999px;
font-size: 0.875rem;
font-weight: 500;
opacity: 0;
transition: opacity 0.3s, visibility 0.3s;
z-index: 50;
pointer-events: none;
box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
display: flex;
align-items: center;
gap: 0.5rem;
}
.copy-feedback.show {
opacity: 1;
transform: translateX(-50%) translateY(0);
}
.message-success-container {
max-width: 600px;
margin: 2rem auto;
background: #ffffff;
border-radius: 12px;
box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
overflow: hidden;
}
.success-header {
background: #60A5FA;
padding: 1.5rem;
text-align: center;
color: white;
}
.success-header h2 {
font-size: 1.25rem;
font-weight: 600;
margin-bottom: 0.5rem;
display: flex;
align-items: center;
justify-content: center;
gap: 0.5rem;
}
.success-header p {
font-size: 0.875rem;
opacity: 0.9;
margin: 0;
}
.success-content {
padding: 1.5rem;
}
.link-display {
background: #F8FAFC;
border: 1px solid #E2E8F0;
border-radius: 0.5rem;
padding: 0.875rem 1rem;
color: #475569;
font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
font-size: 0.875rem;
line-height: 1.5;
word-break: break-all;
margin-bottom: 1rem;
text-align: left;
overflow-x: auto;
white-space: nowrap;
}
.message-success-container {
background: white;
border-radius: 0.75rem;
box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
max-width: 32rem;
margin: 0 auto;
}
.success-header {
background: #3B82F6;
color: white;
padding: 1.5rem;
text-align: center;
border-radius: 0.75rem 0.75rem 0 0;
}
.success-header h2 {
font-size: 1.25rem;
font-weight: 600;
margin-bottom: 0.5rem;
}
.success-header p {
font-size: 0.875rem;
opacity: 0.9;
}
.success-content {
padding: 1.5rem;
}
.share-button {
display: inline-flex;
align-items: center;
justify-content: center;
width: 100%;
padding: 0.875rem 1.5rem;
border-radius: 8px;
font-weight: 500;
font-size: 0.875rem;
gap: 0.5rem;
transition: all 0.15s ease;
border: none;
cursor: pointer;
color: white;
background: #60A5FA;
}
.share-button:hover {
background: #3B82F6;
}
.share-button:active {
transform: translateY(1px);
}
.share-button i {
font-size: 0.875rem;
}
.copy-feedback {
position: fixed;
top: 1rem;
left: 50%;
transform: translateX(-50%) translateY(-1rem);
background: #3B82F6;
color: white;
padding: 0.75rem 1.5rem;
border-radius: 9999px;
font-size: 0.875rem;
font-weight: 500;
opacity: 0;
transition: opacity 0.3s, visibility 0.3s;
z-index: 50;
pointer-events: none;
box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
display: flex;
align-items: center;
gap: 0.5rem;
}
.copy-feedback.show {
opacity: 1;
transform: translateX(-50%) translateY(0);
}
.options-container {
display: flex;
align-items: center;
gap: 20px;
margin-bottom: 10px;
}
@media (max-width: 640px) {
.options-container {
flex-direction: column;
gap: 15px;
}
.options-container button {
width: 100%;
}
}
.option-item {
display: flex;
align-items: center;
white-space: nowrap;
}
.tab-active {
border-bottom: 2px solid #3b82f6;
color: #3b82f6;
background-color: #f8fafc;
}
.editor-container {
border: 1px solid #e5e7eb;
border-radius: 0.375rem;
background-color: white;
overflow: hidden;
}
.editor-toolbar {
display: flex;
justify-content: space-between;
align-items: center;
padding: 0.5rem;
border-bottom: 1px solid #e5e7eb;
background-color: #f8fafc;
}
.editor-tabs {
display: flex;
gap: 1px;
}
.editor-tab {
padding: 0.5rem 1rem;
font-size: 0.875rem;
cursor: pointer;
border: none;
background: none;
}
.editor-options {
display: flex;
align-items: center;
gap: 1rem;
}
.content-area {
padding: 1rem;
}
.editor-content {
width: 100%;
height: 200px;
border: 1px solid #e5e7eb;
border-radius: 0.5rem;
padding: 0.5rem;
background-color: white;
overflow-y: auto;
position: relative;
}
#message {
width: 100%;
height: 100%;
resize: none;
outline: none;
border: none;
padding: 0;
display: block;
}
.auto-height .editor-container {
overflow: visible;
}
.auto-height .editor-content {
height: auto;
min-height: 200px;
overflow: visible;
max-height: none;
}
.auto-height #message {
height: 100% !important;
}
.markdown {
line-height: 1.6;
}
.form-label {
display: block;
font-size: 1.1rem;
font-weight: bold;
color: #2d3748;
margin-bottom: 0.5rem;
}
.form-label .optional,
.form-label .markdown-support,
.form-label .time-limit {
font-size: 0.875rem;
font-weight: normal;
color: #6B7280;
margin-left: 0.5rem;
}
.form-label .optional,
.form-label .markdown-support,
.form-label .time-limit {
font-size: 0.875rem;
font-weight: normal;
color: #6B7280;
margin-left: 0.5rem;
text-sm text-gray-500 ml-2;
}
.confirmation-container {
max-width: 500px;
margin: 2rem auto;
padding: 2rem;
background: #ffffff;
border-radius: 16px;
box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
text-align: center;
}
.confirmation-icon {
font-size: 3rem;
color: #3B82F6;
margin-bottom: 1.5rem;
}
.confirmation-title {
font-size: 1.5rem;
font-weight: 600;
color: #1F2937;
margin-bottom: 1rem;
}
.confirmation-text {
color: #4B5563;
margin-bottom: 1.5rem;
line-height: 1.6;
}
.confirmation-buttons {
display: flex;
gap: 1rem;
justify-content: center;
}
.confirm-button {
padding: 0.75rem 1.5rem;
background: #3B82F6;
color: white;
border: none;
border-radius: 8px;
font-weight: 500;
cursor: pointer;
transition: all 0.2s;
min-width: 120px;
}
.confirm-button:hover {
background: #2563EB;
}
.back-button {
padding: 0.75rem 1.5rem;
background: #F3F4F6;
color: #4B5563;
border: none;
border-radius: 8px;
font-weight: 500;
cursor: pointer;
transition: all 0.2s;
min-width: 120px;
}
.back-button:hover {
background: #E5E7EB;
}
@media (max-width: 640px) {
.confirmation-container {
margin: 1rem;
padding: 1.5rem;
}
.confirmation-buttons {
flex-direction: column;
}
.confirm-button,
.back-button {
width: 100%;
}
}
.content-box.markdown-mode #displayContent {
line-height: 1.6;
}
.content-box.markdown-mode #displayContent h1 {
font-size: 28px;
font-weight: bold;
margin: 16px 0;
}
.content-box.markdown-mode #displayContent h2 {
font-size: 24px;
font-weight: bold;
margin: 14px 0;
}
.content-box.markdown-mode #displayContent h3 {
font-size: 20px;
font-weight: bold;
margin: 12px 0;
}
.content-box.markdown-mode #displayContent h4 {
font-size: 18px;
font-weight: bold;
margin: 10px 0;
}
.content-box.markdown-mode #displayContent h5 {
font-size: 16px;
font-weight: bold;
margin: 8px 0;
}
.content-box.markdown-mode #displayContent h6 {
font-size: 14px;
font-weight: bold;
margin: 8px 0;
}
.content-box.markdown-mode #displayContent p {
font-size: 14px;
margin: 8px 0;
}
.content-box.markdown-mode #displayContent > h1:first-child,
.content-box.markdown-mode #displayContent > h2:first-child,
.content-box.markdown-mode #displayContent > h3:first-child,
.content-box.markdown-mode #displayContent > h4:first-child,
.content-box.markdown-mode #displayContent > h5:first-child,
.content-box.markdown-mode #displayContent > h6:first-child {
margin-top: 0;
}
.content-box.markdown-mode #displayContent h1 { font-size: 32px; }
.content-box.markdown-mode #displayContent h2 { font-size: 24px; }
.content-box.markdown-mode #displayContent h3 { font-size: 20px; }
.content-box.markdown-mode #displayContent h4 { font-size: 16px; }
.content-box.markdown-mode #displayContent h5 { font-size: 14px; }
.content-box.markdown-mode #displayContent h6 { font-size: 12px; }
.content-box.markdown-mode #displayContent h1,
.content-box.markdown-mode #displayContent h2,
.content-box.markdown-mode #displayContent h3,
.content-box.markdown-mode #displayContent h4,
.content-box.markdown-mode #displayContent h5,
.content-box.markdown-mode #displayContent h6 {
font-weight: bold;
margin: 16px 0 8px 0;
}
.content-box.markdown-mode #displayContent h1,
.preview-content h1 { font-size: 32px; }
.content-box.markdown-mode #displayContent h2,
.preview-content h2 { font-size: 24px; }
.content-box.markdown-mode #displayContent h3,
.preview-content h3 { font-size: 20px; }
.content-box.markdown-mode #displayContent h4,
.preview-content h4 { font-size: 16px; }
.content-box.markdown-mode #displayContent h5,
.preview-content h5 { font-size: 14px; }
.content-box.markdown-mode #displayContent h6,
.preview-content h6 { font-size: 12px; }
.content-box.markdown-mode #displayContent h1,
.content-box.markdown-mode #displayContent h2,
.content-box.markdown-mode #displayContent h3,
.content-box.markdown-mode #displayContent h4,
.content-box.markdown-mode #displayContent h5,
.content-box.markdown-mode #displayContent h6,
.preview-content h1,
.preview-content h2,
.preview-content h3,
.preview-content h4,
.preview-content h5,
.preview-content h6 {
font-weight: bold;
margin: 16px 0 8px 0;
line-height: 1.4;
}
.preview-content {
padding: 16px;
background: #fff;
border: 1px solid #e5e7eb;
border-radius: 0.5rem;
min-height: 100px;
}
</style>
</head>
<body class="bg-gradient-to-r from-blue-100 to-blue-300 font-sans min-h-screen flex items-center justify-center">
<div class="container mx-auto p-8">
<?php
define('ENCRYPTION_KEY_LEN', 32);
function generateEncryptionKey()
{
return bin2hex(random_bytes(ENCRYPTION_KEY_LEN / 2));
}
function encrypt($plaintext, $key)
{
global $encryptionKeyFromEnv;
$iv = random_bytes(openssl_cipher_iv_length('aes-256-cbc'));
$intermediateKey = hash_hmac('sha256', $key, $encryptionKeyFromEnv, true);
$encrypted = openssl_encrypt($plaintext, 'aes-256-cbc', $intermediateKey, 0, $iv);
return base64_encode($iv . $encrypted);
}
function decrypt($ciphertext, $key)
{
global $encryptionKeyFromEnv;
$ciphertext = base64_decode($ciphertext);
$iv = substr($ciphertext, 0, openssl_cipher_iv_length('aes-256-cbc'));
$encrypted = substr($ciphertext, openssl_cipher_iv_length('aes-256-cbc'));
$intermediateKey = hash_hmac('sha256', $key, $encryptionKeyFromEnv, true);
$decrypted = openssl_decrypt($encrypted, 'aes-256-cbc', $intermediateKey, 0, $iv);
return $decrypted;
}
function generateRandomFilename($length = 16)
{
return 'messages/' . substr(bin2hex(random_bytes($length / 2)), 0, $length) . '.json';
}
function generateVerificationCode($length = 8)
{
return bin2hex(random_bytes($length / 2));
}
function hashVerificationCode($code)
{
return hash('sha256', $code);
}
function hashPassword($password)
{
return $password ? hash('sha256', $password) : null;
}
function sanitizeInput($data)
{
return htmlspecialchars(trim($data));
}
if ($_SERVER['REQUEST_METHOD'] === 'POST' && !isset($_GET['confirm'])) {
$senderName = isset($_POST['senderName']) ? sanitizeInput($_POST['senderName']) : '';
$senderNote = isset($_POST['senderNote']) ? sanitizeInput($_POST['senderNote']) : '';
$senderPassword = isset($_POST['senderPassword']) ? sanitizeInput($_POST['senderPassword']) : '';
$userDays = isset($_POST['expiry_days']) ? intval($_POST['expiry_days']) : 0;
$userHours = isset($_POST['expiry_hours']) ? intval($_POST['expiry_hours']) : 0;
$userMinutes = isset($_POST['expiry_minutes']) ? intval($_POST['expiry_minutes']) : 0;
$userSeconds = isset($_POST['expiry_seconds']) ? intval($_POST['expiry_seconds']) : 0;
$userExpirySeconds = ($userDays * 24 * 60 * 60) + ($userHours * 60 * 60) + ($userMinutes * 60) + $userSeconds;
if ($userExpirySeconds > $expirySeconds) {
echo '<div class="message-box mb-6">';
echo '<p class="text-red-500">设置的过期时间超过系统允许的最大值（' . $messageExpiry . '）。</p>';
echo '</div>';
exit;
}
if (!empty($_POST['message'])) {
$content = $_POST['message'];
$verificationCode = generateVerificationCode();
$hashedVerificationCode = hashVerificationCode($verificationCode);
$hashedSenderPassword = hashPassword($senderPassword);
$randomKey = generateEncryptionKey();
$encryptedMessage = encrypt($content, $randomKey);
$encryptedSenderName = encrypt($senderName, $randomKey);
$encryptedSenderNote = encrypt($senderNote, $randomKey);
$keyEncryptedWithVerificationCode = encrypt($randomKey, $hashedVerificationCode);
$keyEncryptedWithSenderPassword = $hashedSenderPassword ? encrypt($randomKey, $hashedSenderPassword) : null;
$filename = generateRandomFilename();
if (!file_exists('messages')) mkdir('messages', 0755, true);
$messageData = [
'senderNameEncrypted' => $encryptedSenderName,
'senderNoteEncrypted' => $encryptedSenderNote,
'senderPasswordHash' => $hashedSenderPassword,
'messageEncrypted' => $encryptedMessage,
'keyEncryptedWithVerificationCode' => $keyEncryptedWithVerificationCode,
'keyEncryptedWithSenderPassword' => $keyEncryptedWithSenderPassword,
'hashedVerificationCode' => $hashedVerificationCode,
'createdAt' => time(),
'expirySeconds' => $userExpirySeconds > 0 ? $userExpirySeconds : $expirySeconds
];
file_put_contents($filename, json_encode($messageData), LOCK_EX);
$messageLink = "?file=" . urlencode(basename($filename)) . "&code=" . urlencode($verificationCode);
echo '<div class="message-success-container">
<div class="success-header">
<h2>链接生成成功</h2>
<p>此链接仅可查看一次，阅读后将自动销毁</p>
</div>