optimize: 优化预设IP相关代码。

packages/gui/src/view/pages/server.vue

@@ -260,7 +260,7 @@ export default {
       if (!this.config || !this.config.server || !this.config.server.dns || !this.config.server.dns.providers) {
         return options
       }
-      _.forEach(this.config.server.dns.providers, (dnsConf, key) => {
+      _.forEach(this.config.server.dns.providers, (dnsConfig, key) => {
         options.push({
           value: key,
           label: key

packages/mitmproxy/src/lib/dns/index.js

@@ -1,12 +1,14 @@
 const DNSOverTLS = require('./tls.js')
 const DNSOverHTTPS = require('./https.js')
 const DNSOverIpAddress = require('./ipaddress.js')
+const DNSOverPreSetIpList = require('./preset.js')
 const matchUtil = require('../../utils/util.match')
-const log = require('../../utils/util.log')
 
 module.exports = {
   initDNS (dnsProviders, preSetIpList) {
     const dnsMap = {}
+
+    // 创建普通的DNS
     for (const provider in dnsProviders) {
       const conf = dnsProviders[provider]
 
@@ -22,32 +24,31 @@ module.exports = {
       dnsMap[provider].name = provider
       dnsMap[provider].type = conf.type
     }
+
+    // 创建预设IP的DNS
+    dnsMap.PreSet = new DNSOverPreSetIpList(preSetIpList)
+
     return dnsMap
   },
   hasDnsLookup (dnsConfig, hostname) {
-    let providerName = matchUtil.matchHostname(dnsConfig.mapping, hostname, 'get dns providerName')
+    let providerName = null
 
-    // usa已重命名为cloudflare，以下为向下兼容处理
+    // 先匹配 预设IP配置
-    if (providerName === 'usa' && dnsConfig.providers[providerName] == null) {
-      providerName = 'cloudflare'
-    }
-
-    // 如果为空，尝试从预设IP中匹配，如果配置过预设IP，则随便
-    if (providerName == null || dnsConfig.providers[providerName] == null) {
     const hostnamePreSetIpList = matchUtil.matchHostname(dnsConfig.preSetIpList, hostname, 'matched preSetIpList')
     if (hostnamePreSetIpList) {
-        for (const name in dnsConfig.providers) {
+      return dnsConfig.dnsMap.PreSet
-          const provider = dnsConfig.providers[name]
-          if (provider.type === 'https') {
-            log.debug(`当前域名未配置过DNS，但配置了预设IP，现返回DNS '${name}' 作为预设IP的使用工具，hostname: ${hostname}, preSetIpList:`, hostnamePreSetIpList)
-            return dnsConfig.providers[name]
-          }
-        }
     }
+
+    // 再匹配 DNS映射配置
+    providerName = matchUtil.matchHostname(dnsConfig.mapping, hostname, 'get dns providerName')
+
+    // 由于DNS中的usa已重命名为cloudflare，所以做以下处理，为了向下兼容
+    if (providerName === 'usa' && dnsConfig.dnsMap.usa == null && dnsConfig.dnsMap.cloudflare != null) {
+      return dnsConfig.dnsMap.cloudflare
     }
 
     if (providerName) {
-      return dnsConfig.providers[providerName]
+      return dnsConfig.dnsMap[providerName]
     }
   }
 }

packages/mitmproxy/src/lib/dns/preset.js

@@ -0,0 +1,39 @@
+const BaseDNS = require('./base')
+const matchUtil = require('../../utils/util.match')
+
+function mapToList (ipMap) {
+  const ipList = []
+  for (const key in ipMap) {
+    if (!ipMap[key]) continue
+    ipList.push(ipMap[key])
+  }
+  return ipList
+}
+
+module.exports = class DNSOverPreSetIpList extends BaseDNS {
+  constructor (preSetIpList) {
+    super()
+    this.preSetIpList = preSetIpList
+    this.name = 'PreSet'
+    this.type = 'PreSet'
+  }
+
+  async _lookup (hostname) {
+    // 获取当前域名的预设IP列表
+    let hostnamePreSetIpList = matchUtil.matchHostname(this.preSetIpList, hostname, 'matched preSetIpList')
+    if (hostnamePreSetIpList && (hostnamePreSetIpList.length > 0 || hostnamePreSetIpList.length === undefined)) {
+      if (hostnamePreSetIpList.length > 0) {
+        hostnamePreSetIpList = hostnamePreSetIpList.slice()
+      } else {
+        hostnamePreSetIpList = mapToList(hostnamePreSetIpList)
+      }
+
+      if (hostnamePreSetIpList.length > 0) {
+        return hostnamePreSetIpList
+      }
+    }
+
+    // 未预设当前域名的IP列表
+    return []
+  }
+}

packages/mitmproxy/src/lib/proxy/mitmproxy/createConnectHandler.js

@@ -106,7 +106,7 @@ function connect (req, cltSocket, head, hostname, port, dnsConfig = null, isDire
       host: hostname,
       connectTimeout: 10000
     }
-    if (dnsConfig && dnsConfig.providers) {
+    if (dnsConfig && dnsConfig.dnsMap) {
       const dns = DnsUtil.hasDnsLookup(dnsConfig, hostname)
       if (dns) {
         options.lookup = dnsLookup.createLookupFunc(null, dns, 'connect', hostport, isDnsIntercept)

packages/mitmproxy/src/lib/proxy/mitmproxy/createRequestHandler.js

@@ -110,10 +110,10 @@ module.exports = function createRequestHandler (createIntercepts, middlewares, e
           log.info('发起代理请求:', url, (rOptions.servername ? ', sni: ' + rOptions.servername : ''), ', headers:', jsonApi.stringify2(rOptions.headers))
 
           const isDnsIntercept = {}
-          if (dnsConfig && dnsConfig.providers) {
+          if (dnsConfig && dnsConfig.dnsMap) {
             let dns = DnsUtil.hasDnsLookup(dnsConfig, rOptions.hostname)
             if (!dns && rOptions.servername) {
-              dns = dnsConfig.providers.quad9
+              dns = dnsConfig.dnsMap.quad9
               if (dns) {
                 log.info(`域名 ${rOptions.hostname} 在dns中未配置，但使用了 sni: ${rOptions.servername}, 必须使用dns，现默认使用 'quad9' DNS.`)
               }

packages/mitmproxy/src/lib/proxy/mitmproxy/index.js

@@ -41,7 +41,7 @@ module.exports = {
 
     port = ~~port
     const speedTestConfig = dnsConfig.speedTest
-    const dnsMap = dnsConfig.providers
+    const dnsMap = dnsConfig.dnsMap
     if (speedTestConfig) {
       const dnsProviders = speedTestConfig.dnsProviders
       const map = {}

packages/mitmproxy/src/options.js

@@ -95,7 +95,7 @@ module.exports = (serverConfig) => {
     port: serverConfig.port,
     dnsConfig: {
       preSetIpList,
-      providers: dnsUtil.initDNS(serverConfig.dns.providers, preSetIpList),
+      dnsMap: dnsUtil.initDNS(serverConfig.dns.providers, preSetIpList),
       mapping: matchUtil.domainMapRegexply(dnsMapping),
       speedTest: serverConfig.dns.speedTest
     },