/*
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* Copyright 2016 jeasonlzy(廖子尧)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.doumee.lib_coremodel.http.utils;
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import java.io.IOException;
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import java.io.InputStream;
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import java.security.KeyManagementException;
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import java.security.KeyStore;
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import java.security.NoSuchAlgorithmException;
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import java.security.cert.Certificate;
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import java.security.cert.CertificateException;
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import java.security.cert.CertificateFactory;
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import java.security.cert.X509Certificate;
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import javax.net.ssl.HostnameVerifier;
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import javax.net.ssl.KeyManager;
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import javax.net.ssl.KeyManagerFactory;
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import javax.net.ssl.SSLContext;
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import javax.net.ssl.SSLSession;
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import javax.net.ssl.SSLSocketFactory;
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import javax.net.ssl.TrustManager;
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import javax.net.ssl.TrustManagerFactory;
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import javax.net.ssl.X509TrustManager;
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public class HttpsUtils {
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public static class SSLParams {
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public SSLSocketFactory sSLSocketFactory;
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public X509TrustManager trustManager;
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}
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public static SSLParams getSslSocketFactory() {
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return getSslSocketFactoryBase(null, null, null);
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}
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/**
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* https单向认证
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* 可以额外配置信任服务端的证书策略，否则默认是按CA证书去验证的，若不是CA可信任的证书，则无法通过验证
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*/
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public static SSLParams getSslSocketFactory(X509TrustManager trustManager) {
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return getSslSocketFactoryBase(trustManager, null, null);
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}
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/**
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* https单向认证
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* 用含有服务端公钥的证书校验服务端证书
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*/
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public static SSLParams getSslSocketFactory(InputStream... certificates) {
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return getSslSocketFactoryBase(null, null, null, certificates);
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}
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/**
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* https双向认证
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* bksFile 和 password -> 客户端使用bks证书校验服务端证书
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* certificates -> 用含有服务端公钥的证书校验服务端证书
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*/
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public static SSLParams getSslSocketFactory(InputStream bksFile, String password, InputStream... certificates) {
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return getSslSocketFactoryBase(null, bksFile, password, certificates);
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}
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/**
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* https双向认证
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* bksFile 和 password -> 客户端使用bks证书校验服务端证书
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* X509TrustManager -> 如果需要自己校验，那么可以自己实现相关校验，如果不需要自己校验，那么传null即可
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*/
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public static SSLParams getSslSocketFactory(InputStream bksFile, String password, X509TrustManager trustManager) {
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return getSslSocketFactoryBase(trustManager, bksFile, password);
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}
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private static SSLParams getSslSocketFactoryBase(X509TrustManager trustManager, InputStream bksFile, String password, InputStream... certificates) {
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SSLParams sslParams = new SSLParams();
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try {
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KeyManager[] keyManagers = prepareKeyManager(bksFile, password);
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TrustManager[] trustManagers = prepareTrustManager(certificates);
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X509TrustManager manager;
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if (trustManager != null) {
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//优先使用用户自定义的TrustManager
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manager = trustManager;
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} else if (trustManagers != null) {
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//然后使用默认的TrustManager
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manager = chooseTrustManager(trustManagers);
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} else {
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//否则使用不安全的TrustManager
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manager = UnSafeTrustManager;
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}
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// 创建TLS类型的SSLContext对象， that uses our TrustManager
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SSLContext sslContext = SSLContext.getInstance("TLS");
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// 用上面得到的trustManagers初始化SSLContext，这样sslContext就会信任keyStore中的证书
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// 第一个参数是授权的密钥管理器，用来授权验证，比如授权自签名的证书验证。第二个是被授权的证书管理器，用来验证服务器端的证书
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sslContext.init(keyManagers, new TrustManager[]{manager}, null);
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// 通过sslContext获取SSLSocketFactory对象
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sslParams.sSLSocketFactory = sslContext.getSocketFactory();
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sslParams.trustManager = manager;
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return sslParams;
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} catch (NoSuchAlgorithmException e) {
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throw new AssertionError(e);
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} catch (KeyManagementException e) {
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throw new AssertionError(e);
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}
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}
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private static KeyManager[] prepareKeyManager(InputStream bksFile, String password) {
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try {
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if (bksFile == null || password == null) return null;
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KeyStore clientKeyStore = KeyStore.getInstance("BKS");
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clientKeyStore.load(bksFile, password.toCharArray());
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KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
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kmf.init(clientKeyStore, password.toCharArray());
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return kmf.getKeyManagers();
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} catch (Exception e) {
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e.printStackTrace();
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}
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return null;
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}
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private static TrustManager[] prepareTrustManager(InputStream... certificates) {
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if (certificates == null || certificates.length <= 0) return null;
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try {
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CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
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// 创建一个默认类型的KeyStore，存储我们信任的证书
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KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
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keyStore.load(null);
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int index = 0;
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for (InputStream certStream : certificates) {
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String certificateAlias = Integer.toString(index++);
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// 证书工厂根据证书文件的流生成证书 cert
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Certificate cert = certificateFactory.generateCertificate(certStream);
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// 将 cert 作为可信证书放入到keyStore中
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keyStore.setCertificateEntry(certificateAlias, cert);
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try {
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if (certStream != null) certStream.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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//我们创建一个默认类型的TrustManagerFactory
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TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
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//用我们之前的keyStore实例初始化TrustManagerFactory，这样tmf就会信任keyStore中的证书
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tmf.init(keyStore);
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//通过tmf获取TrustManager数组，TrustManager也会信任keyStore中的证书
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return tmf.getTrustManagers();
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} catch (Exception e) {
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e.printStackTrace();
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}
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return null;
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}
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private static X509TrustManager chooseTrustManager(TrustManager[] trustManagers) {
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for (TrustManager trustManager : trustManagers) {
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if (trustManager instanceof X509TrustManager) {
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return (X509TrustManager) trustManager;
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}
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}
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return null;
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}
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/**
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* 为了解决客户端不信任服务器数字证书的问题，网络上大部分的解决方案都是让客户端不对证书做任何检查，
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* 这是一种有很大安全漏洞的办法
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*/
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public static X509TrustManager UnSafeTrustManager = new X509TrustManager() {
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@Override
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public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
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}
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@Override
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public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
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}
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@Override
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public X509Certificate[] getAcceptedIssuers() {
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return new X509Certificate[]{};
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}
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};
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/**
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* 此类是用于主机名验证的基接口。 在握手期间，如果 URL 的主机名和服务器的标识主机名不匹配，
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* 则验证机制可以回调此接口的实现程序来确定是否应该允许此连接。策略可以是基于证书的或依赖于其他验证方案。
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* 当验证 URL 主机名使用的默认规则失败时使用这些回调。如果主机名是可接受的，则返回 true
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*/
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public static HostnameVerifier UnSafeHostnameVerifier = new HostnameVerifier() {
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@Override
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public boolean verify(String hostname, SSLSession session) {
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return true;
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}
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};
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}
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