Java tutorial
/* * Copyright (C) 2014 Dominik Schrmann <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; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.support.v4.app.Fragment; import android.view.View; import android.view.View.OnClickListener; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.RelativeLayout; import android.widget.TextView; import com.beardedhen.androidbootstrap.BootstrapButton; import org.openintents.openpgp.OpenPgpSignatureResult; import org.sufficientlysecure.keychain.R; import org.sufficientlysecure.keychain.pgp.PgpDecryptVerifyResult; import org.sufficientlysecure.keychain.pgp.PgpKeyHelper; import org.sufficientlysecure.keychain.ui.dialog.PassphraseDialogFragment; public class DecryptFragment extends Fragment { private static final int RESULT_CODE_LOOKUP_KEY = 0x00007006; protected long mSignatureKeyId = 0; protected LinearLayout mResultLayout; protected RelativeLayout mSignatureLayout; protected TextView mResultText; protected ImageView mSignatureStatusImage; protected TextView mUserId; protected TextView mUserIdRest; protected BootstrapButton mLookupKey; @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); mResultLayout = (LinearLayout) getView().findViewById(R.id.result); mResultText = (TextView) getView().findViewById(R.id.result_text); mSignatureLayout = (RelativeLayout) getView().findViewById(R.id.result_signature); mSignatureStatusImage = (ImageView) getView().findViewById(R.id.ic_signature_status); mUserId = (TextView) getView().findViewById(R.id.mainUserId); mUserIdRest = (TextView) getView().findViewById(R.id.mainUserIdRest); mLookupKey = (BootstrapButton) getView().findViewById(R.id.lookup_key); mLookupKey.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { lookupUnknownKey(mSignatureKeyId); } }); mResultLayout.setVisibility(View.GONE); } private void lookupUnknownKey(long unknownKeyId) { Intent intent = new Intent(getActivity(), ImportKeysActivity.class); intent.setAction(ImportKeysActivity.ACTION_IMPORT_KEY_FROM_KEYSERVER); intent.putExtra(ImportKeysActivity.EXTRA_KEY_ID, unknownKeyId); startActivityForResult(intent, RESULT_CODE_LOOKUP_KEY); } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { switch (requestCode) { case RESULT_CODE_LOOKUP_KEY: { if (resultCode == Activity.RESULT_OK) { // TODO: generate new OpenPgpSignatureResult and display it } return; } default: { super.onActivityResult(requestCode, resultCode, data); break; } } } protected void onResult(PgpDecryptVerifyResult decryptVerifyResult) { OpenPgpSignatureResult signatureResult = decryptVerifyResult.getSignatureResult(); mSignatureKeyId = 0; mResultLayout.setVisibility(View.VISIBLE); if (signatureResult != null) { mSignatureStatusImage.setVisibility(View.VISIBLE); mSignatureKeyId = signatureResult.getKeyId(); String userId = signatureResult.getUserId(); String[] userIdSplit = PgpKeyHelper.splitUserId(userId); if (userIdSplit[0] != null) { mUserId.setText(userIdSplit[0]); } else { mUserId.setText(R.string.user_id_no_name); } if (userIdSplit[1] != null) { mUserIdRest.setText(userIdSplit[1]); } else { mUserIdRest.setText( getString(R.string.label_key_id) + ": " + PgpKeyHelper.convertKeyIdToHex(mSignatureKeyId)); } switch (signatureResult.getStatus()) { case OpenPgpSignatureResult.SIGNATURE_SUCCESS_CERTIFIED: { if (signatureResult.isSignatureOnly()) { mResultText.setText(R.string.decrypt_result_signature_certified); } else { mResultText.setText(R.string.decrypt_result_decrypted_and_signature_certified); } mResultLayout.setBackgroundColor(getResources().getColor(R.color.result_green)); mSignatureStatusImage.setImageResource(R.drawable.overlay_ok); mSignatureLayout.setVisibility(View.VISIBLE); mLookupKey.setVisibility(View.GONE); break; } case OpenPgpSignatureResult.SIGNATURE_SUCCESS_UNCERTIFIED: { if (signatureResult.isSignatureOnly()) { mResultText.setText(R.string.decrypt_result_signature_uncertified); } else { mResultText.setText(R.string.decrypt_result_decrypted_and_signature_uncertified); } mResultLayout.setBackgroundColor(getResources().getColor(R.color.result_orange)); mSignatureStatusImage.setImageResource(R.drawable.overlay_ok); mSignatureLayout.setVisibility(View.VISIBLE); mLookupKey.setVisibility(View.GONE); break; } case OpenPgpSignatureResult.SIGNATURE_UNKNOWN_PUB_KEY: { if (signatureResult.isSignatureOnly()) { mResultText.setText(R.string.decrypt_result_signature_unknown_pub_key); } else { mResultText.setText(R.string.decrypt_result_decrypted_unknown_pub_key); } mResultLayout.setBackgroundColor(getResources().getColor(R.color.result_orange)); mSignatureStatusImage.setImageResource(R.drawable.overlay_error); mSignatureLayout.setVisibility(View.VISIBLE); mLookupKey.setVisibility(View.VISIBLE); break; } case OpenPgpSignatureResult.SIGNATURE_ERROR: { mResultText.setText(R.string.decrypt_result_invalid_signature); mResultLayout.setBackgroundColor(getResources().getColor(R.color.result_red)); mSignatureStatusImage.setImageResource(R.drawable.overlay_error); mSignatureLayout.setVisibility(View.GONE); mLookupKey.setVisibility(View.GONE); break; } default: { mResultText.setText(R.string.error); mResultLayout.setBackgroundColor(getResources().getColor(R.color.result_red)); mSignatureStatusImage.setImageResource(R.drawable.overlay_error); mSignatureLayout.setVisibility(View.GONE); mLookupKey.setVisibility(View.GONE); break; } } } else { mSignatureLayout.setVisibility(View.GONE); mLookupKey.setVisibility(View.GONE); // successful decryption-only mResultLayout.setBackgroundColor(getResources().getColor(R.color.result_purple)); mResultText.setText(R.string.decrypt_result_decrypted); } } protected void showPassphraseDialog(long keyId) { PassphraseDialogFragment.show(getActivity(), keyId, new Handler() { @Override public void handleMessage(Message message) { if (message.what == PassphraseDialogFragment.MESSAGE_OKAY) { String passphrase = message.getData() .getString(PassphraseDialogFragment.MESSAGE_DATA_PASSPHRASE); decryptStart(passphrase); } } }); } /** * Should be overridden by MessageFragment and FileFragment to start actual decryption * * @param passphrase */ protected void decryptStart(String passphrase) { } }