an unsafe implementation of the interface X509TrustManager from google

Question

I hava an app in Google Play, I received a mail from Google saying that:

Your app(s) listed at the end of this email use an unsafe implementation of t

Answer 1

I found this solution ，it works well!

X509TrustManager:

public class EasyX509TrustManager
    implements X509TrustManager {

private X509TrustManager standardTrustManager = null;

/**
 * Constructor for EasyX509TrustManager.
 */
public EasyX509TrustManager(KeyStore keystore)
        throws NoSuchAlgorithmException, KeyStoreException {
    super();
    TrustManagerFactory factory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
    factory.init(keystore);
    TrustManager[] trustmanagers = factory.getTrustManagers();
    if (trustmanagers.length == 0) {
        throw new NoSuchAlgorithmException("no trust manager found");
    }
    this.standardTrustManager = (X509TrustManager) trustmanagers[0];
}

/**
 * @see X509TrustManager#checkClientTrusted(X509Certificate[], String authType)
 */
public void checkClientTrusted(X509Certificate[] certificates, String authType)
        throws CertificateException {
    standardTrustManager.checkClientTrusted(certificates, authType);
}

/**
 * @see X509TrustManager#checkServerTrusted(X509Certificate[], String authType)
 */
public void checkServerTrusted(X509Certificate[] certificates, String authType)
        throws CertificateException {
    if ((certificates != null) && (certificates.length == 1)) {
        certificates[0].checkValidity();
    } else {
        standardTrustManager.checkServerTrusted(certificates, authType);
    }
}

/**
 * @see X509TrustManager#getAcceptedIssuers()
 */
public X509Certificate[] getAcceptedIssuers() {
    return this.standardTrustManager.getAcceptedIssuers();
}

}

SSLSocketFactory:

public class EasySSLSocketFactory implements LayeredSocketFactory {

private SSLContext sslcontext = null;

private static SSLContext createEasySSLContext() throws IOException {
    try {
        SSLContext context = SSLContext.getInstance("TLS");
        context.init(null, new TrustManager[]{new EasyX509TrustManager(
                null)}, null);
        return context;
    } catch (Exception e) {
        throw new IOException(e.getMessage());
    }
}

private SSLContext getSSLContext() throws IOException {
    if (this.sslcontext == null) {
        this.sslcontext = createEasySSLContext();
    }
    return this.sslcontext;
}

/**
 * @see org.apache.http.conn.scheme.SocketFactory#connectSocket(Socket,
 * String, int, InetAddress, int,
 * HttpParams)
 */
public Socket connectSocket(Socket sock, String host, int port,
                            InetAddress localAddress, int localPort, HttpParams params)
        throws IOException, UnknownHostException, ConnectTimeoutException {
    int connTimeout = HttpConnectionParams.getConnectionTimeout(params);
    int soTimeout = HttpConnectionParams.getSoTimeout(params);

    InetSocketAddress remoteAddress = new InetSocketAddress(host, port);
    SSLSocket sslsock = (SSLSocket) ((sock != null) ? sock : createSocket());

    if ((localAddress != null) || (localPort > 0)) {
        // we need to bind explicitly
        if (localPort < 0) {
            localPort = 0; // indicates "any"
        }
        InetSocketAddress isa = new InetSocketAddress(localAddress,
                localPort);
        sslsock.bind(isa);
    }

    sslsock.connect(remoteAddress, connTimeout);
    sslsock.setSoTimeout(soTimeout);
    return sslsock;

}

/**
 * @see org.apache.http.conn.scheme.SocketFactory#createSocket()
 */
public Socket createSocket() throws IOException {
    return getSSLContext().getSocketFactory().createSocket();
}

/**
 * @see org.apache.http.conn.scheme.SocketFactory#isSecure(Socket)
 */
public boolean isSecure(Socket socket) throws IllegalArgumentException {
    return true;
}

/**
 * @see LayeredSocketFactory#createSocket(Socket,
 * String, int, boolean)
 */
public Socket createSocket(Socket socket, String host, int port,
                           boolean autoClose) throws IOException, UnknownHostException {
    return getSSLContext().getSocketFactory().createSocket(socket, host, port, autoClose);
}

// -------------------------------------------------------------------
// javadoc in org.apache.http.conn.scheme.SocketFactory says :
// Both Object.equals() and Object.hashCode() must be overridden
// for the correct operation of some connection managers
// -------------------------------------------------------------------

public boolean equals(Object obj) {
    return ((obj != null) && obj.getClass().equals(
            EasySSLSocketFactory.class));
}

public int hashCode() {
    return EasySSLSocketFactory.class.hashCode();
}

}

Then:

SchemeRegistry schReg = new SchemeRegistry();
            schReg.register(new Scheme("http", PlainSocketFactory
                    .getSocketFactory(), 80));
            schReg.register(new Scheme("https", new EasySSLSocketFactory(), 443));