HttpsUtils.java

package com.marshalchen.common.commonUtils.urlUtils;


import android.content.Context;
import com.marshalchen.common.commonUtils.logUtils.Logs;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManagerFactory;
import java.io.*;

import java.net.URL;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.Certificate;
import java.security.cert.CertificateException;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;

public class HttpsUtils {

    public static Certificate getX509CertifaceteFromCrtFile() {
        InputStream inStream = null;
        X509Certificate cert = null;
        try {
            inStream = new FileInputStream("fileName-of-cert");
            CertificateFactory cf = CertificateFactory.getInstance("X.509");
            cert = (X509Certificate) cf.generateCertificate(inStream);
            inStream.close();
        } catch (Exception e) {
            e.printStackTrace();
            Logs.e(e, "");
        } finally {
            return cert;
        }
    }

    public static SSLSocketFactory buildSslSocketFactory(Context context,String crtUrl) {

        try {

            // Load CAs from an InputStream
            // (could be from a resource or ByteArrayInputStream or ...)
            CertificateFactory cf = CertificateFactory.getInstance("X.509");
            // From https://www.washington.edu/itconnect/security/ca/load-der.crt
            InputStream is = context.getResources().getAssets().open(crtUrl);
            InputStream caInput = new BufferedInputStream(is);
            Certificate ca;
            try {
                ca = cf.generateCertificate(caInput);
                // System.out.println("ca=" + ((X509Certificate) ca).getSubjectDN());
            } finally {
                caInput.close();
            }

            // Create a KeyStore containing our trusted CAs
            String keyStoreType = KeyStore.getDefaultType();
            KeyStore keyStore = KeyStore.getInstance(keyStoreType);
            keyStore.load(null, null);
            keyStore.setCertificateEntry("ca", ca);

            // Create a TrustManager that trusts the CAs in our KeyStore
            String tmfAlgorithm = TrustManagerFactory.getDefaultAlgorithm();
            TrustManagerFactory tmf = TrustManagerFactory.getInstance(tmfAlgorithm);
            tmf.init(keyStore);

            // Create an SSLContext that uses our TrustManager
            SSLContext contexts = SSLContext.getInstance("TLS");
            contexts.init(null, tmf.getTrustManagers(), null);
            return contexts.getSocketFactory();

        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (KeyStoreException e) {
            e.printStackTrace();
        } catch (KeyManagementException e) {
            e.printStackTrace();
        } catch (CertificateException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;

    }

    /**
     * @deprecated
     */
    public static void sendWithSSlSocket() {
        SSLSocketFactory sslsocketfactory = (SSLSocketFactory) SSLSocketFactory.getDefault();
        URL url = null;
        try {
            url = new URL("https://xxx.xxx");
            HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
            conn.setSSLSocketFactory(sslsocketfactory);
            InputStream inputstream = conn.getInputStream();
            InputStreamReader inputstreamreader = new InputStreamReader(inputstream);
            BufferedReader bufferedreader = new BufferedReader(inputstreamreader);

            String string = null;
            while ((string = bufferedreader.readLine()) != null) {
                System.out.println("Received " + string);
            }
        } catch (Exception e) {
            e.printStackTrace();
            Logs.e(e, "");
        }

    }

    public static void sendWithSSlSocketWithCrt(Context context, String crtUri,String uri) {
        SSLSocketFactory sslsocketfactory = buildSslSocketFactory(context,crtUri);
        URL url = null;
        try {
            url = new URL(uri);
            HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
            conn.setSSLSocketFactory(sslsocketfactory);
            InputStream inputstream = conn.getInputStream();
            InputStreamReader inputstreamreader = new InputStreamReader(inputstream);
            BufferedReader bufferedreader = new BufferedReader(inputstreamreader);
            String string = null;
            while ((string = bufferedreader.readLine()) != null) {
                Logs.d("Received " + string);
            }
        } catch (Exception e) {
            e.printStackTrace();
            Logs.e(e, "");
        }

    }
}