159 lines
6.3 KiB
PHP
159 lines
6.3 KiB
PHP
<?php
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require_once __DIR__ . '/config.php';
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function readJson($file) {
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if (!file_exists($file)) return [];
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$s = file_get_contents($file);
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$data = json_decode($s, true);
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return is_array($data) ? $data : [];
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}
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function safeId($id) { return preg_match('/^[a-zA-Z0-9_-]+$/', $id); }
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function writeJson($file, $data) { file_put_contents($file, json_encode($data, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT)); }
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$token = $_GET['token'] ?? '';
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if (!$token) { http_response_code(400); echo 'Bad token'; exit; }
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$baseDir = __DIR__ . DIRECTORY_SEPARATOR . 'data';
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$docsDir = $baseDir . DIRECTORY_SEPARATOR . 'docs';
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$indexFile = $baseDir . DIRECTORY_SEPARATOR . 'index.json';
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$sharesFile = $baseDir . DIRECTORY_SEPARATOR . 'shares.json';
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// 校验令牌
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$shares = readJson($sharesFile);
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$found = null;
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foreach ($shares as $rec) { if (($rec['token'] ?? '') === $token) { $found = $rec; break; } }
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if (!$found) { http_response_code(403); echo 'Unauthorized'; exit; }
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if (!empty($found['revoked'])) { http_response_code(403); echo 'Unauthorized'; exit; }
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if (!empty($found['expires_at']) && time() > $found['expires_at']) { http_response_code(403); echo 'Link expired'; exit; }
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// 一次性链接已使用则拒绝访问
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if (!empty($found['single_use']) && !empty($found['used'])) { http_response_code(403); echo 'Link already used'; exit; }
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$id = $found['id'] ?? '';
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if (!$id || !safeId($id)) { http_response_code(400); echo 'Bad id'; exit; }
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$file = $docsDir . DIRECTORY_SEPARATOR . $id . '.html';
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if (!file_exists($file)) { http_response_code(404); echo 'Not found'; exit; }
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$content = file_get_contents($file);
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$index = readJson($indexFile);
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$title = $id;
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foreach ($index as $it) { if (($it['id'] ?? '') === $id) { $title = $it['title'] ?? $id; break; } }
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?>
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<!doctype html>
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<html lang="zh-CN" data-theme="light">
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<head>
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<meta charset="utf-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1" />
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<title><?= htmlspecialchars($title) ?> - 分享预览</title>
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<link rel="stylesheet" href="assets/style.css" />
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<style>
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.share-wrap { display:grid; grid-template-columns: 1fr; height:100vh; }
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.share-toolbar { display:flex; align-items:center; justify-content:space-between; padding:12px; border-bottom:2px solid var(--accent); background: var(--panel); }
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.share-title { font-size:18px; margin:0; }
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.theme-toggle { margin-left: 8px; }
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</style>
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</head>
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<body>
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<div class="share-wrap">
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<div class="share-toolbar">
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<h1 class="share-title"><?= htmlspecialchars($title) ?></h1>
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<div style="display:flex; gap:8px; align-items:center;">
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<button id="share-print" class="btn">打印文档</button>
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<button id="share-theme" class="btn theme-toggle">切换主题</button>
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<a class="btn" href="index.php">返回主页</a>
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</div>
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</div>
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<div class="editor-area" style="padding-top:12px;">
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<?= $content ?>
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</div>
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</div>
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<script>
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// 初始化主题
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(function(){
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var t = localStorage.getItem('theme');
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if (t === 'dark' || t === 'light') {
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document.documentElement.setAttribute('data-theme', t);
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}
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})();
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document.getElementById('share-theme').addEventListener('click', function(){
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var root = document.documentElement;
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var cur = root.getAttribute('data-theme') || 'light';
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var next = cur === 'light' ? 'dark' : 'light';
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root.setAttribute('data-theme', next);
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try { localStorage.setItem('theme', next); } catch (e) {}
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});
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// 打印功能
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document.getElementById('share-print').addEventListener('click', function() {
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try {
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// 获取文档标题和内容
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var title = document.querySelector('.share-title').textContent;
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var content = document.querySelector('.editor-area').innerHTML;
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// 创建打印内容容器
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var printContainer = document.createElement('div');
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printContainer.id = 'print-container';
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printContainer.style.position = 'absolute';
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printContainer.style.left = '-9999px';
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printContainer.style.width = '800px'; // 设置合适的打印宽度
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// 设置打印内容
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printContainer.innerHTML = '<h1 style="text-align:center; font-family:Arial, sans-serif;">' +
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title +
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'</h1><div style="font-family:Arial, sans-serif; line-height:1.6;">' +
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content +
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'</div>';
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// 添加到页面
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document.body.appendChild(printContainer);
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// 创建打印样式
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var printStyle = document.createElement('style');
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printStyle.media = 'print';
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printStyle.innerHTML =
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'#print-container { position: static !important; width: 100% !important; } ' +
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'body > *:not(#print-container) { display: none !important; } ' +
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'body { margin: 2cm; }';
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document.head.appendChild(printStyle);
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// 保存原始样式引用，以便稍后移除
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var originalPrintStyle = printStyle;
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// 当打印对话框关闭后恢复页面
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window.onafterprint = function() {
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// 移除打印容器和样式
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document.body.removeChild(printContainer);
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document.head.removeChild(originalPrintStyle);
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window.onafterprint = null; // 清除事件处理
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};
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// 调用浏览器打印功能
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window.print();
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} catch (e) {
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// 打印错误时恢复页面
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try {
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var printContainer = document.getElementById('print-container');
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if (printContainer) document.body.removeChild(printContainer);
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var printStyles = document.querySelectorAll('style[media="print"]');
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printStyles.forEach(function(style) { document.head.removeChild(style); });
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} catch (cleanupError) {
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console.error('清理打印元素时出错:', cleanupError);
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}
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console.error('打印失败:', e);
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alert('打印失败，请重试');
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}
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});
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</script>
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</body>
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</html>
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<?php
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// 标记一次性链接为已使用
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if (!empty($found['single_use']) && empty($found['used'])) {
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foreach ($shares as &$rec) {
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if (($rec['token'] ?? '') === $token) { $rec['used'] = true; break; }
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}
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writeJson($sharesFile, $shares);
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}
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?>
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