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/*
* Copyright (C) 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;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;
import org.openintents.openpgp.OpenPgpSignatureResult;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.nfc.NfcActivity;
import org.sufficientlysecure.keychain.pgp.KeyRing;
import org.sufficientlysecure.keychain.service.results.DecryptVerifyResult;
import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
public abstract class DecryptFragment extends Fragment {
private static final int RESULT_CODE_LOOKUP_KEY = 0x00007006;
public static final int REQUEST_CODE_PASSPHRASE = 0x00008001;
public static final int REQUEST_CODE_NFC_DECRYPT = 0x00008002;
protected long mSignatureKeyId = 0;
protected LinearLayout mResultLayout;
protected RelativeLayout mSignatureLayout;
protected TextView mResultText;
protected ImageView mSignatureStatusImage;
protected TextView mUserId;
protected TextView mUserIdRest;
protected Button mLookupKey;
// State
protected String mPassphrase;
protected byte[] mNfcDecryptedSessionKey;
@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 = (Button) 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);
}
protected void startPassphraseDialog(long subkeyId) {
Intent intent = new Intent(getActivity(), PassphraseDialogActivity.class);
intent.putExtra(PassphraseDialogActivity.EXTRA_SUBKEY_ID, subkeyId);
startActivityForResult(intent, REQUEST_CODE_PASSPHRASE);
}
protected void startNfcDecrypt(String pin, byte[] encryptedSessionKey) {
// build PendingIntent for Yubikey NFC operations
Intent intent = new Intent(getActivity(), NfcActivity.class);
intent.setAction(NfcActivity.ACTION_DECRYPT_SESSION_KEY);
intent.putExtra(NfcActivity.EXTRA_DATA, new Intent()); // not used, only relevant to OpenPgpService
intent.putExtra(NfcActivity.EXTRA_PIN, pin);
intent.putExtra(NfcActivity.EXTRA_NFC_ENC_SESSION_KEY, encryptedSessionKey);
intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivityForResult(intent, REQUEST_CODE_NFC_DECRYPT);
}
protected void onResult(DecryptVerifyResult decryptVerifyResult) {
OpenPgpSignatureResult signatureResult = decryptVerifyResult.getSignatureResult();
mSignatureKeyId = 0;
mResultLayout.setVisibility(View.VISIBLE);
if (signatureResult != null) {
mSignatureStatusImage.setVisibility(View.VISIBLE);
mSignatureKeyId = signatureResult.getKeyId();
String userId = signatureResult.getPrimaryUserId();
String[] userIdSplit = KeyRing.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) + ": "
+ KeyFormattingUtils.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.android_green_light));
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.android_orange_light));
mSignatureStatusImage.setImageResource(R.drawable.overlay_ok);
mSignatureLayout.setVisibility(View.VISIBLE);
mLookupKey.setVisibility(View.GONE);
break;
}
case OpenPgpSignatureResult.SIGNATURE_KEY_MISSING: {
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.android_orange_light));
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.android_red_light));
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.android_red_light));
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.android_purple_light));
mResultText.setText(R.string.decrypt_result_decrypted);
}
}
/**
* Should be overridden by MessageFragment and FileFragment to start actual decryption
*/
protected abstract void decryptStart();
}
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