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简单稳定的DNS分流器
// ==UserScript==
// @name L站佬友专用DNS分流器
// @namespace http://tampermonkey.net/
// @license Duy
// @version 1.041
// @description 简单稳定的DNS分流器
// @author You
// @run-at document-start
// @grant GM_setValue
// @grant GM_getValue
// @grant GM_xmlhttpRequest
// @grant GM_registerMenuCommand
// @connect cloudflare-dns.com
// @connect doh.pub
// @connect neo.doh.oaifree.com
// @match https://linux.do/*
// @match http://linux.do/*
// @match https://*.linux.do/*
// @match http://*.linux.do/*
// @match https://github.com/*
// ==/UserScript==
(function() {
'use strict';
const CONFIG_KEY = 'dnsRouterConfig';
// 默认配置
const defaultConfig = {
rules: {
'linux.do': 'https://cloudflare-dns.com/dns-query',
'github.com': 'https://cloudflare-dns.com/dns-query'
}
};
// 获取配置
function getConfig() {
const saved = GM_getValue(CONFIG_KEY, JSON.stringify(defaultConfig));
return JSON.parse(saved);
}
// 保存配置
function saveConfig(config) {
GM_setValue(CONFIG_KEY, JSON.stringify(config));
}
// 检查当前域名是否匹配规则
function shouldActivate() {
const config = getConfig();
const domain = window.location.hostname;
for (const ruleDomain in config.rules) {
if (domain === ruleDomain || domain.endsWith('.' + ruleDomain)) {
return true;
}
}
return false;
}
// 增强的DNS解析 - 支持多种响应格式
function resolveWithDoH(domain, dohUrl) {
return new Promise((resolve, reject) => {
const url = `${dohUrl}?name=${encodeURIComponent(domain)}&type=A`;
// 尝试不同的Accept头部
const tryFormats = [
{ headers: { 'Accept': 'application/dns-json' } },
{ headers: { 'Accept': 'application/json' } },
{ headers: { 'Accept': '*/*' } }
];
let currentTry = 0;
function attemptRequest() {
const options = tryFormats[currentTry];
GM_xmlhttpRequest({
method: 'GET',
url: url,
headers: options.headers,
timeout: 8000,
onload: function(response) {
if (response.status !== 200) {
if (currentTry < tryFormats.length - 1) {
currentTry++;
attemptRequest();
} else {
reject(new Error(`HTTP ${response.status}`));
}
return;
}
try {
// 尝试解析响应
const data = JSON.parse(response.responseText);
const ip = extractIPFromResponse(data);
if (ip) {
resolve(ip);
} else {
reject(new Error('No IP found in response'));
}
} catch (e) {
// 如果不是JSON，尝试其他格式
if (currentTry < tryFormats.length - 1) {
currentTry++;
attemptRequest();
} else {
reject(new Error('Response format not supported'));
}
}
},
onerror: function(error) {
if (currentTry < tryFormats.length - 1) {
currentTry++;
attemptRequest();
} else {
reject(new Error('Network error: ' + (error.statusText || 'Unknown')));
}
},
ontimeout: function() {
reject(new Error('Request timeout'));
}
});
}
attemptRequest();
});
}
// 从响应数据中提取IP地址
function extractIPFromResponse(data) {
// 方法1: 标准Answer数组
if (data.Answer && Array.isArray(data.Answer)) {
for (const answer of data.Answer) {
if (answer.data && isValidIP(answer.data)) {
return answer.data;
}
}
}
// 方法2: answers字段（某些服务商使用）
if (data.answers && Array.isArray(data.answers)) {
for (const answer of data.answers) {
if (answer.data && isValidIP(answer.data)) {
return answer.data;
}
}
}
// 方法3: 直接data字段
if (data.data && isValidIP(data.data)) {
return data.data;
}
// 方法4: 在响应文本中搜索IP地址
const responseText = JSON.stringify(data);
const ipMatch = responseText.match(/\b(?:[0-9]{1,3}\.){3}[0-9]{1,3}\b/);
if (ipMatch && isValidIP(ipMatch[0])) {
return ipMatch[0];
}
return null;
}
// IP地址验证
function isValidIP(ip) {
return /^(\d{1,3}\.){3}\d{1,3}$/.test(ip) &&
ip.split('.').every(part => {
const num = parseInt(part, 10);
return num >= 0 && num <= 255;
});
}
// 创建UI
function createUI() {
const config = getConfig();
const domain = window.location.hostname;
// 清理现有UI
const existing = document.getElementById('dns-router-panel');
if (existing) existing.remove();
const panel = document.createElement('div');
panel.id = 'dns-router-panel';
panel.style.cssText = `
position: fixed;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
background: #2c3e50;
color: white;
padding: 20px;
border-radius: 10px;
z-index: 10000;
font-family: Arial, sans-serif;
font-size: 14px;
min-width: 400px;
box-shadow: 0 8px 32px rgba(0,0,0,0.3);
border: 2px solid #3498db;
`;
let html = `
<div style="margin-bottom: 15px; font-weight: bold; border-bottom: 1px solid #34495e; padding-bottom: 10px; display: flex; justify-content: space-between; align-items: center;">
<span>🌐 DNS分流器 v1.04</span>
<button id="close-panel" style="background: none; border: none; color: #e74c3c; font-size: 16px; cursor: pointer;">×</button>
</div>
<div style="margin-bottom: 15px; padding: 10px; background: #34495e; border-radius: 5px;">
<div style="font-size: 12px; color: #bdc3c7;">当前域名</div>
<div style="font-size: 13px; font-weight: bold;">${domain}</div>
</div>
<div style="margin-bottom: 15px;">
<div style="font-size: 12px; color: #bdc3c7; margin-bottom: 5px;">添加规则</div>
<div style="display: flex; gap: 8px; margin-bottom: 10px;">
<input type="text" id="new-domain" placeholder="域名" style="flex:1; padding: 6px; border: 1px solid #555; background: #2c3e50; color: white; border-radius: 3px;">
<button id="add-rule" style="background: #27ae60; color: white; border: none; padding: 6px 12px; border-radius: 3px; cursor: pointer;">添加</button>
</div>
<select id="dns-preset" style="width:100%; padding:6px; background:#2c3e50; color:white; border:1px solid #555; border-radius:3px; margin-bottom: 8px;">
<option value="https://cloudflare-dns.com/dns-query">Cloudflare</option>
<option value="https://doh.pub/dns-query">DNSPod</option>
<option value="https://neo.doh.oaifree.com/dns-query">OAI Free DNS</option>
<option value="custom">自定义地址</option>
</select>
<input type="text" id="custom-dns" placeholder="https://..." style="width:100%; padding:6px; border:1px solid #555; background:#2c3e50; color:white; border-radius:3px; display:none;">
</div>
<div style="margin-bottom: 15px;">
<div style="font-size: 12px; color: #bdc3c7; margin-bottom: 5px;">规则列表</div>
<div id="rules-list" style="max-height: 200px; overflow-y: auto;">
`;
// 规则列表
for (const [ruleDomain, dns] of Object.entries(config.rules)) {
const isCurrent = domain === ruleDomain || domain.endsWith('.' + ruleDomain);
html += `
<div style="display: flex; justify-content: space-between; align-items: center; padding: 8px; margin-bottom: 5px; background: ${isCurrent ? '#1a5276' : '#34495e'}; border-radius: 3px;">
<div>
<div style="font-size: 12px; font-weight: bold;">${ruleDomain}</div>
<div style="font-size: 10px; color: #bdc3c7;">${getDnsName(dns)}</div>
</div>
<div>
<button class="test-rule" data-domain="${ruleDomain}" style="background: #e67e22; color: white; border: none; padding: 4px 8px; border-radius: 3px; cursor: pointer; font-size: 10px; margin-right: 5px;">测试</button>
<button class="delete-rule" data-domain="${ruleDomain}" style="background: #e74c3c; color: white; border: none; padding: 4px 8px; border-radius: 3px; cursor: pointer; font-size: 10px;" ${ruleDomain === 'linux.do' ? 'disabled' : ''}>删除</button>
</div>
</div>
`;
}
html += `
</div>
</div>
<div style="display: flex; gap: 10px; justify-content: flex-end; border-top: 1px solid #34495e; padding-top: 10px;">
<button id="test-current" style="background: #e67e22; color: white; border: none; padding: 8px 15px; border-radius: 3px; cursor: pointer;">测试当前</button>
<button id="close-btn" style="background: #95a5a6; color: white; border: none; padding: 8px 15px; border-radius: 3px; cursor: pointer;">关闭</button>
</div>
`;
panel.innerHTML = html;
document.body.appendChild(panel);
// 事件监听
document.getElementById('close-panel').addEventListener('click', hideUI);
document.getElementById('close-btn').addEventListener('click', hideUI);
document.getElementById('add-rule').addEventListener('click', addNewRule);
document.getElementById('test-current').addEventListener('click', testCurrentDNS);
document.getElementById('dns-preset').addEventListener('change', function() {
const customInput = document.getElementById('custom-dns');
customInput.style.display = this.value === 'custom' ? 'block' : 'none';
});
document.querySelectorAll('.test-rule').forEach(btn => {
btn.addEventListener('click', function() {
const domain = this.getAttribute('data-domain');
testSpecificDNS(domain);
});
});
document.querySelectorAll('.delete-rule').forEach(btn => {
if (!btn.disabled) {
btn.addEventListener('click', function() {
const domain = this.getAttribute('data-domain');
deleteRule(domain);
});
}
});
document.getElementById('new-domain').addEventListener('keypress', function(e) {
if (e.key === 'Enter') {
addNewRule();
}
});
}
function getDnsName(dnsUrl) {
if (dnsUrl.includes('cloudflare')) return 'Cloudflare';
if (dnsUrl.includes('doh.pub')) return 'DNSPod';
if (dnsUrl.includes('oaifree.com')) return 'OAI Free DNS';
return dnsUrl;
}
function addNewRule() {
const domainInput = document.getElementById('new-domain');
const dnsSelect = document.getElementById('dns-preset');
const customInput = document.getElementById('custom-dns');
const domain = domainInput.value.trim();
let dns = dnsSelect.value === 'custom' ? customInput.value.trim() : dnsSelect.value;
if (!domain) {
alert('请输入域名');
return;
}
if (!dns) {
alert('请选择或输入DNS地址');
return;
}
const config = getConfig();
config.rules[domain] = dns;
saveConfig(config);
showNotification(`已添加: ${domain}`);
domainInput.value = '';
customInput.value = '';
hideUI();
setTimeout(showUI, 300);
}
function deleteRule(domain) {
const config = getConfig();
delete config.rules[domain];
saveConfig(config);
showNotification(`已删除: ${domain}`);
hideUI();
setTimeout(showUI, 300);
}
function testCurrentDNS() {
const domain = window.location.hostname;
const config = getConfig();
for (const [ruleDomain, dns] of Object.entries(config.rules)) {
if (domain === ruleDomain || domain.endsWith('.' + ruleDomain)) {
testDNS(domain, dns);
return;
}
}
showNotification('当前域名没有配置规则');
}
function testSpecificDNS(domain) {
const config = getConfig();
const dns = config.rules[domain];
if (dns) {
testDNS(domain, dns);
}
}
function testDNS(domain, dnsEndpoint) {
const button = event?.target;
if (button) {
button.disabled = true;
button.textContent = '测试中...';
}
resolveWithDoH(domain, dnsEndpoint)
.then(ip => {
showNotification(`${domain} -> ${ip}`);
})
.catch(error => {
showNotification(`${domain} 失败: ${error.message}`);
})
.finally(() => {
if (button) {
button.disabled = false;
button.textContent = '测试';
}
});
}
function showNotification(message) {
const existing = document.getElementById('dns-notification');
if (existing) existing.remove();
const notification = document.createElement('div');
notification.id = 'dns-notification';
notification.style.cssText = `
position: fixed;
top: 20px;
right: 20px;
background: #2c3e50;
color: white;
padding: 12px 15px;
border-radius: 5px;
z-index: 10001;
font-family: Arial, sans-serif;
box-shadow: 0 4px 12px rgba(0,0,0,0.3);
border-left: 4px solid #3498db;
`;
notification.textContent = message;
document.body.appendChild(notification);
setTimeout(() => notification.remove(), 3000);
}
function showUI() {
createUI();
}
function hideUI() {
const panel = document.getElementById('dns-router-panel');
if (panel) panel.remove();
}
// 主初始化 - 简化启动逻辑
function init() {
// 只在匹配的域名上激活
if (shouldActivate()) {
console.log('DNS分流器已激活');
}
// 注册菜单
GM_registerMenuCommand('🌐 显示DNS分流器', showUI);
}
// 立即执行初始化
init();
console.log('DNS分流器 v1.04 已加载');
})();