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package org.openqa.selenium.server;

import java.security.GeneralSecurityException;

import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

/**
 * Provides a mechanism to trust all SSL certificates
 */
public class TrustEverythingSSLTrustManager implements X509TrustManager {


  public java.security.cert.X509Certificate[] getAcceptedIssuers() {
    return null;
  }

  public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType) {
    // No need to implement.
  }

  public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType) {
    // No need to implement.
  }

  private static SSLSocketFactory socketFactory = null;

  /**
   * Returns an SSLSocketFactory that will trust all SSL certificates; this is suitable for passing
   * to HttpsURLConnection, either to its instance method setSSLSocketFactory, or to its static
   * method setDefaultSSLSocketFactory.
   * 
   * @return SSLSocketFactory suitable for passing to HttpsUrlConnection
   * @see HttpsURLConnection#setSSLSocketFactory(SSLSocketFactory)
   * @see HttpsURLConnection#setDefaultSSLSocketFactory(SSLSocketFactory)
   */
  public synchronized static SSLSocketFactory getTrustingSSLSocketFactory() {
    if (socketFactory != null) return socketFactory;
    TrustManager[] trustManagers = new TrustManager[] {new TrustEverythingSSLTrustManager()};
    SSLContext sc;
    try {
      sc = SSLContext.getInstance("SSL");
      sc.init(null, trustManagers, null);
    } catch (GeneralSecurityException e) {
      throw new RuntimeException("This is a BUG in Selenium; please report it", e);
    }
    socketFactory = sc.getSocketFactory();
    return socketFactory;
  }

  /**
   * Automatically trusts all SSL certificates in the current process; this is dangerous. You should
   * probably prefer to configure individual HttpsURLConnections with trustAllSSLCertificates
   * 
   * @see #trustAllSSLCertificates(HttpsURLConnection)
   */
  public static void trustAllSSLCertificatesUniversally() {
    getTrustingSSLSocketFactory();
    HttpsURLConnection.setDefaultSSLSocketFactory(socketFactory);
  }

  /**
   * Configures a single HttpsURLConnection to trust all SSL certificates.
   * 
   * @param connection an HttpsURLConnection which will be configured to trust all certs
   */
  public static void trustAllSSLCertificates(HttpsURLConnection connection) {
    getTrustingSSLSocketFactory();
    connection.setSSLSocketFactory(socketFactory);
    connection.setHostnameVerifier(new HostnameVerifier() {
      public boolean verify(String s, SSLSession sslSession) {
        return true;
      }
    });
  }
}