diff options
Diffstat (limited to 'OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/AddKeyserverDialogFragment.java')
| -rw-r--r-- | OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/AddKeyserverDialogFragment.java | 320 |
1 files changed, 320 insertions, 0 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/AddKeyserverDialogFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/AddKeyserverDialogFragment.java new file mode 100644 index 000000000..cbef5950f --- /dev/null +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/AddKeyserverDialogFragment.java @@ -0,0 +1,320 @@ +/* + * Copyright (C) 2012-2014 Dominik Schürmann <dominik@dominikschuermann.de> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +package org.sufficientlysecure.keychain.ui.dialog; + +import android.app.Activity; +import android.app.AlertDialog; +import android.app.Dialog; +import android.app.ProgressDialog; +import android.content.Context; +import android.content.DialogInterface; +import android.net.Uri; +import android.os.AsyncTask; +import android.os.Bundle; +import android.os.Message; +import android.os.Messenger; +import android.os.RemoteException; +import android.support.v4.app.DialogFragment; +import android.test.suitebuilder.TestSuiteBuilder; +import android.view.KeyEvent; +import android.view.LayoutInflater; +import android.view.View; +import android.view.inputmethod.EditorInfo; +import android.view.inputmethod.InputMethodManager; +import android.widget.Button; +import android.widget.CheckBox; +import android.widget.EditText; +import android.widget.TextView; +import android.widget.TextView.OnEditorActionListener; + +import org.sufficientlysecure.keychain.Constants; +import org.sufficientlysecure.keychain.R; +import org.sufficientlysecure.keychain.util.Log; +import org.sufficientlysecure.keychain.util.TlsHelper; + +import java.io.IOException; +import java.net.HttpURLConnection; +import java.net.MalformedURLException; +import java.net.URI; +import java.net.URISyntaxException; +import java.net.URL; + +import javax.net.ssl.HttpsURLConnection; + +public class AddKeyserverDialogFragment extends DialogFragment implements OnEditorActionListener { + private static final String ARG_MESSENGER = "messenger"; + private static final String ARG_TITLE = "title"; + + public static final int MESSAGE_OKAY = 1; + public static final int MESSAGE_VERIFICATION_FAILED = 2; + + public static final String MESSAGE_KEYSERVER = "new_keyserver"; + public static final String MESSAGE_VERIFIED = "verified"; + public static final String MESSAGE_FAILURE_REASON = "failure_reason"; + + private Messenger mMessenger; + private EditText mKeyserverEditText; + private CheckBox mVerifyKeyserverCheckBox; + + public static enum FailureReason { + INVALID_URL, + CONNECTION_FAILED + } + + ; + + /** + * Creates new instance of this dialog fragment + * + * @param title title of dialog + * @param messenger to communicate back after setting the passphrase + * @return + */ + public static AddKeyserverDialogFragment newInstance(Messenger messenger, int title) { + AddKeyserverDialogFragment frag = new AddKeyserverDialogFragment(); + Bundle args = new Bundle(); + args.putInt(ARG_TITLE, title); + args.putParcelable(ARG_MESSENGER, messenger); + + frag.setArguments(args); + + return frag; + } + + /** + * Creates dialog + */ + @Override + public Dialog onCreateDialog(Bundle savedInstanceState) { + final Activity activity = getActivity(); + + int title = getArguments().getInt(ARG_TITLE); + mMessenger = getArguments().getParcelable(ARG_MESSENGER); + + CustomAlertDialogBuilder alert = new CustomAlertDialogBuilder(activity); + + alert.setTitle(title); + + LayoutInflater inflater = activity.getLayoutInflater(); + View view = inflater.inflate(R.layout.add_keyserver_dialog, null); + alert.setView(view); + + mKeyserverEditText = (EditText) view.findViewById(R.id.keyserver_url_edit_text); + mVerifyKeyserverCheckBox = (CheckBox) view.findViewById(R.id.verify_keyserver_checkbox); + + // we don't want dialog to be dismissed on click, thereby requiring the hack seen below + // and in onStart + alert.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { + @Override + public void onClick(DialogInterface dialog, int id) { + // we need to have an empty listener to prevent errors on some devices as mentioned + // at http://stackoverflow.com/q/13746412/3000919 + // actual listener set in onStart + } + }); + + alert.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() { + + @Override + public void onClick(DialogInterface dialog, int id) { + dismiss(); + } + }); + + // Hack to open keyboard. + // This is the only method that I found to work across all Android versions + // http://turbomanage.wordpress.com/2012/05/02/show-soft-keyboard-automatically-when-edittext-receives-focus/ + // Notes: * onCreateView can't be used because we want to add buttons to the dialog + // * opening in onActivityCreated does not work on Android 4.4 + mKeyserverEditText.setOnFocusChangeListener(new View.OnFocusChangeListener() { + @Override + public void onFocusChange(View v, boolean hasFocus) { + mKeyserverEditText.post(new Runnable() { + @Override + public void run() { + InputMethodManager imm = (InputMethodManager) getActivity() + .getSystemService(Context.INPUT_METHOD_SERVICE); + imm.showSoftInput(mKeyserverEditText, InputMethodManager.SHOW_IMPLICIT); + } + }); + } + }); + mKeyserverEditText.requestFocus(); + + mKeyserverEditText.setImeActionLabel(getString(android.R.string.ok), + EditorInfo.IME_ACTION_DONE); + mKeyserverEditText.setOnEditorActionListener(this); + + return alert.show(); + } + + @Override + public void onStart() { + super.onStart(); + AlertDialog addKeyserverDialog = (AlertDialog) getDialog(); + if (addKeyserverDialog != null) { + Button positiveButton = addKeyserverDialog.getButton(Dialog.BUTTON_POSITIVE); + positiveButton.setOnClickListener(new View.OnClickListener() { + @Override + public void onClick(View v) { + String keyserverUrl = mKeyserverEditText.getText().toString(); + if (mVerifyKeyserverCheckBox.isChecked()) { + verifyConnection(keyserverUrl); + } else { + dismiss(); + // return unverified keyserver back to activity + addKeyserver(keyserverUrl, false); + } + } + }); + } + } + + public void addKeyserver(String keyserver, boolean verified) { + dismiss(); + Bundle data = new Bundle(); + data.putString(MESSAGE_KEYSERVER, keyserver); + data.putBoolean(MESSAGE_VERIFIED, verified); + + sendMessageToHandler(MESSAGE_OKAY, data); + } + + public void verificationFailed(FailureReason reason) { + Bundle data = new Bundle(); + data.putSerializable(MESSAGE_FAILURE_REASON, reason); + + sendMessageToHandler(MESSAGE_VERIFICATION_FAILED, data); + } + + public void verifyConnection(String keyserver) { + + new AsyncTask<String, Void, FailureReason>() { + ProgressDialog mProgressDialog; + String mKeyserver; + + @Override + protected void onPreExecute() { + mProgressDialog = new ProgressDialog(getActivity()); + mProgressDialog.setMessage(getString(R.string.progress_verifying_keyserver_url)); + mProgressDialog.setCancelable(false); + mProgressDialog.show(); + } + + @Override + protected FailureReason doInBackground(String... keyservers) { + mKeyserver = keyservers[0]; + FailureReason reason = null; + try { + // replace hkps/hkp scheme and reconstruct Uri + Uri keyserverUri = Uri.parse(mKeyserver); + String scheme = keyserverUri.getScheme(); + String schemeSpecificPart = keyserverUri.getSchemeSpecificPart(); + String fragment = keyserverUri.getFragment(); + if (scheme == null) throw new MalformedURLException(); + if (scheme.equalsIgnoreCase("hkps")) scheme = "https"; + else if (scheme.equalsIgnoreCase("hkp")) scheme = "http"; + URI newKeyserver = new URI(scheme, schemeSpecificPart, fragment); + + Log.d("Converted URL", newKeyserver.toString()); + TlsHelper.openConnection(newKeyserver.toURL()).getInputStream(); + } catch (TlsHelper.TlsHelperException e) { + reason = FailureReason.CONNECTION_FAILED; + } catch (MalformedURLException e) { + Log.w(Constants.TAG, "Invalid keyserver URL entered by user."); + reason = FailureReason.INVALID_URL; + } catch (URISyntaxException e) { + Log.w(Constants.TAG, "Invalid keyserver URL entered by user."); + reason = FailureReason.INVALID_URL; + } catch (IOException e) { + Log.w(Constants.TAG, "Could not connect to entered keyserver url"); + reason = FailureReason.CONNECTION_FAILED; + } + return reason; + } + + @Override + protected void onPostExecute(FailureReason failureReason) { + mProgressDialog.dismiss(); + if (failureReason == null) { + addKeyserver(mKeyserver, true); + } else { + verificationFailed(failureReason); + } + } + }.execute(keyserver); + } + + @Override + public void onDismiss(DialogInterface dialog) { + super.onDismiss(dialog); + + // hide keyboard on dismiss + hideKeyboard(); + } + + private void hideKeyboard() { + if (getActivity() == null) { + return; + } + InputMethodManager inputManager = (InputMethodManager) getActivity() + .getSystemService(Context.INPUT_METHOD_SERVICE); + + //check if no view has focus: + View v = getActivity().getCurrentFocus(); + if (v == null) + return; + + inputManager.hideSoftInputFromWindow(v.getWindowToken(), 0); + } + + /** + * Associate the "done" button on the soft keyboard with the okay button in the view + */ + @Override + public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { + if (EditorInfo.IME_ACTION_DONE == actionId) { + AlertDialog dialog = ((AlertDialog) getDialog()); + Button bt = dialog.getButton(AlertDialog.BUTTON_POSITIVE); + + bt.performClick(); + return true; + } + return false; + } + + /** + * Send message back to handler which is initialized in a activity + * + * @param what Message integer you want to send + */ + private void sendMessageToHandler(Integer what, Bundle data) { + Message msg = Message.obtain(); + msg.what = what; + if (data != null) { + msg.setData(data); + } + + try { + mMessenger.send(msg); + } catch (RemoteException e) { + Log.w(Constants.TAG, "Exception sending message, Is handler present?", e); + } catch (NullPointerException e) { + Log.w(Constants.TAG, "Messenger is null!", e); + } + } +} |