使用okHttp信任所有证书

Question

出于测试目的，我正在尝试将套接字工厂添加到我的okHttp客户端，该客户端在设置代理时信任所有内容。这已经完成了很多次，但是我对一个信任套接字工厂的实现似乎缺少了一些东西：

class TrustEveryoneManager implements X509TrustManager {
    @Override
    public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException { }

    @Override
    public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException { }

    @Override
    public java.security.cert.X509Certificate[] getAcceptedIssuers() {
        return null;
    }
}
OkHttpClient client = new OkHttpClient();

final InetAddress ipAddress = InetAddress.getByName("XX.XXX.XXX.XXX"); // some IP
client.setProxy(new Proxy(Proxy.Type.HTTP, new InetSocketAddress(ipAddress, 8888)));

SSLContext sslContext = SSLContext.getInstance("TLS");
TrustManager[] trustManagers = new TrustManager[]{new TrustEveryoneManager()};
sslContext.init(null, trustManagers, null);
client.setSslSocketFactory(sslContext.getSocketFactory);

没有请求从我的应用程序发出，并且没有记录任何异常，因此它似乎在okHttp中无声地失败。经过进一步调查，似乎在强制握手时，okHttp的Connection.upgradeToTls()中有一个异常被吞没。我给出的例外情况是：javax.net.ssl.SSLException: SSL handshake terminated: ssl=0x74b522b0: SSL_ERROR_ZERO_RETURN occurred. You should never see this.

以下代码生成SSLContext，其作用类似于创建不会抛出任何异常的SSLSocketFactory的魅力：

protected SSLContext getTrustingSslContext() throws NoSuchAlgorithmException, KeyStoreException, KeyManagementException {
    final SSLContextBuilder trustingSSLContextBuilder = SSLContexts.custom()
            .loadTrustMaterial(null, new TrustStrategy() {
                @Override
                public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException {
                    return true; // Accepts any ssl cert whether valid or not.
                }
            });
    return trustingSSLContextBuilder.build();
}

问题是我正在尝试从我的应用程序中完全删除所有Apache HttpClient依赖项。使用Apache HttpClient创建SSLContext的底层代码似乎很简单，但我显然遗漏了一些内容，因为我无法配置SSLContext来匹配此内容。

是否有人能够生成SSLContext实现，而不使用Apache HttpClient可以实现我想要的功能？

Answer 1

万一有人落在这里，对我有用的（唯一）解决方案是创建OkHttpClient，如解释here。

以下是代码：

private static OkHttpClient getUnsafeOkHttpClient() {
  try {
    // Create a trust manager that does not validate certificate chains
    final TrustManager[] trustAllCerts = new TrustManager[] {
        new X509TrustManager() {
          @Override
          public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
          }

          @Override
          public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
          }

          @Override
          public java.security.cert.X509Certificate[] getAcceptedIssuers() {
            return new java.security.cert.X509Certificate[]{};
          }
        }
    };

    // Install the all-trusting trust manager
    final SSLContext sslContext = SSLContext.getInstance("SSL");
    sslContext.init(null, trustAllCerts, new java.security.SecureRandom());
    // Create an ssl socket factory with our all-trusting manager
    final SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();

    OkHttpClient.Builder builder = new OkHttpClient.Builder();
    builder.sslSocketFactory(sslSocketFactory, (X509TrustManager)trustAllCerts[0]);
    builder.hostnameVerifier(new HostnameVerifier() {
      @Override
      public boolean verify(String hostname, SSLSession session) {
        return true;
      }
    });

    OkHttpClient okHttpClient = builder.build();
    return okHttpClient;
  } catch (Exception e) {
    throw new RuntimeException(e);
  }
}

Answer 2

不推荐使用以下方法

sslSocketFactory(SSLSocketFactory sslSocketFactory)

考虑将其更新为

sslSocketFactory(SSLSocketFactory sslSocketFactory, X509TrustManager trustManager)

Answer 3

更新okhttp3.0，getAcceptedIssuers（）函数必须返回一个空数组而不是null

Answer 4

SSLSocketFactory不公开其X509TrustManager，这是OkHttp需要构建一个干净的证书链的字段。相反，此方法必须使用反射来提取信任管理器。应用程序应该更喜欢调用sslSocketFactory（SSLSocketFactory，X509TrustManager），这样可以避免这种反射。

OkHttpClient.Builder builder = new OkHttpClient.Builder();

builder.sslSocketFactory(sslContext.getSocketFactory(),
                    new X509TrustManager() {
                        @Override
                        public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
                        }

                        @Override
                        public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
                        }

                        @Override
                        public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                            return new java.security.cert.X509Certificate[]{};
                        }
                    });

Answer 5

这是sonxurxo在Kotlin中的解决方案，如果有人需要的话。

private fun getUnsafeOkHttpClient(): OkHttpClient {
    // Create a trust manager that does not validate certificate chains
    val trustAllCerts = arrayOf<TrustManager>(object : X509TrustManager {
        override fun checkClientTrusted(chain: Array<out X509Certificate>?, authType: String?) {
        }

        override fun checkServerTrusted(chain: Array<out X509Certificate>?, authType: String?) {
        }

        override fun getAcceptedIssuers() = arrayOf<X509Certificate>()
    })

    // Install the all-trusting trust manager
    val sslContext = SSLContext.getInstance("SSL")
    sslContext.init(null, trustAllCerts, java.security.SecureRandom())
    // Create an ssl socket factory with our all-trusting manager
    val sslSocketFactory = sslContext.socketFactory

    return OkHttpClient.Builder()
        .sslSocketFactory(sslSocketFactory, trustAllCerts[0] as X509TrustManager)
        .hostnameVerifier { _, _ -> true }.build()
}

Answer 6

我为Kotlin做了扩展功能。将其粘贴到任意位置，然后在创建OkHttpClient时将其导入。

fun OkHttpClient.Builder.ignoreAllSSLErrors(): OkHttpClient.Builder {
    val naiveTrustManager = object : X509TrustManager {
        override fun getAcceptedIssuers(): Array<X509Certificate> = arrayOf()
        override fun checkClientTrusted(certs: Array<X509Certificate>, authType: String) = Unit
        override fun checkServerTrusted(certs: Array<X509Certificate>, authType: String) = Unit
    }

    val insecureSocketFactory = SSLContext.getInstance("TLSv1.2").apply {
        val trustAllCerts = arrayOf<TrustManager>(naiveTrustManager)
        init(null, trustAllCerts, SecureRandom())
    }.socketFactory

    sslSocketFactory(insecureSocketFactory, naiveTrustManager)
    hostnameVerifier(HostnameVerifier { _, _ -> true })
    return this
}

像这样使用它：

val okHttpClient = OkHttpClient.Builder().apply {
    // ...
    if (BuildConfig.DEBUG) //if it is a debug build ignore ssl errors
        ignoreAllSSLErrors()
    //...
}.build()

Answer 7

如果有人需要，这是Scala解决方案

def anUnsafeOkHttpClient(): OkHttpClient = {
val manager: TrustManager =
  new X509TrustManager() {
    override def checkClientTrusted(x509Certificates: Array[X509Certificate], s: String) = {}

    override def checkServerTrusted(x509Certificates: Array[X509Certificate], s: String) = {}

    override def getAcceptedIssuers = Seq.empty[X509Certificate].toArray
  }
val trustAllCertificates =  Seq(manager).toArray

val sslContext = SSLContext.getInstance("SSL")
sslContext.init(null, trustAllCertificates, new java.security.SecureRandom())
val sslSocketFactory = sslContext.getSocketFactory()
val okBuilder = new OkHttpClient.Builder()
okBuilder.sslSocketFactory(sslSocketFactory, trustAllCertificates(0).asInstanceOf[X509TrustManager])
okBuilder.hostnameVerifier(new NoopHostnameVerifier)
okBuilder.build()

}

Answer 8

您永远不应该在代码中覆盖证书验证！如果需要进行测试，请使用内部/测试CA并在设备或模拟器上安装CA根证书。如果您不知道如何设置CA，则可以使用BurpSuite或Charles Proxy。