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package de.duenndns.mtmexample;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.TextView;
import java.net.URL;
import java.security.KeyStoreException;
import java.util.ArrayList;
import java.util.Collections;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLContext;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.X509TrustManager;
import de.duenndns.ssl.MemorizingTrustManager;
/**
* Example to demonstrate the use of MemorizingTrustManager on HTTPS
* sockets.
*/
public class MTMExample extends Activity implements OnClickListener
{
MemorizingTrustManager mtm;
TextView content;
HostnameVerifier defaultverifier;
EditText urlinput;
String text;
Handler hdlr;
/** Creates the Activity and registers a MemorizingTrustManager. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
JULHandler.initialize();
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
setContentView(R.layout.mtmexample);
// set up gui elements
findViewById(R.id.connect).setOnClickListener(this);
content = (TextView)findViewById(R.id.content);
urlinput = (EditText)findViewById(R.id.url);
// register handler for background thread
hdlr = new Handler();
// Here, the MemorizingTrustManager is activated for HTTPS
try {
// set location of the keystore
MemorizingTrustManager.setKeyStoreFile("private", "sslkeys.bks");
// register MemorizingTrustManager for HTTPS
SSLContext sc = SSLContext.getInstance("TLS");
mtm = new MemorizingTrustManager(this);
sc.init(null, new X509TrustManager[] { mtm },
new java.security.SecureRandom());
HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
HttpsURLConnection.setDefaultHostnameVerifier(
mtm.wrapHostnameVerifier(HttpsURLConnection.getDefaultHostnameVerifier()));
// disable redirects to reduce possible confusion
HttpsURLConnection.setFollowRedirects(false);
} catch (Exception e) {
e.printStackTrace();
}
}
/** Updates the screen content from a background thread. */
void setText(final String s, final boolean progress) {
text = s;
hdlr.post(new Runnable() {
public void run() {
content.setText(s);
setProgressBarIndeterminateVisibility(progress);
}
});
}
/** Spawns a new thread connecting to the specified URL.
* The result of the request is displayed on the screen.
* @param urlString a HTTPS URL to connect to.
*/
void connect(final String urlString) {
new Thread() {
public void run() {
try {
URL u = new URL(urlString);
HttpsURLConnection c = (HttpsURLConnection)u.openConnection();
c.connect();
setText("" + c.getResponseCode() + " "
+ c.getResponseMessage(), false);
c.disconnect();
} catch (Exception e) {
setText(e.toString(), false);
e.printStackTrace();
}
}
}.start();
}
/** Reacts on the connect Button press. */
@Override
public void onClick(View view) {
String url = urlinput.getText().toString();
setText("Loading " + url, true);
setProgressBarIndeterminateVisibility(true);
connect(url);
}
/** React on the "Manage Certificates" button press. */
public void onManage(View view) {
final ArrayList<String> aliases = Collections.list(mtm.getCertificates());
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.select_dialog_item, aliases);
new AlertDialog.Builder(this).setTitle("Tap Certificate to Delete")
.setNegativeButton(android.R.string.cancel, null)
.setAdapter(adapter, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
try {
String alias = aliases.get(which);
mtm.deleteCertificate(alias);
setText("Deleted " + alias, false);
} catch (KeyStoreException e) {
e.printStackTrace();
setText("Error: " + e.getLocalizedMessage(), false);
}
}
})
.create().show();
}
}
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