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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.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.Bundle;
import android.os.Message;
import android.os.Messenger;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;
import org.openintents.openpgp.util.OpenPgpApi;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.compatibility.ClipboardReflection;
import org.sufficientlysecure.keychain.service.KeychainIntentService;
import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
import org.sufficientlysecure.keychain.operations.results.DecryptVerifyResult;
import org.sufficientlysecure.keychain.ui.util.Notify;
import org.sufficientlysecure.keychain.util.Log;
import org.sufficientlysecure.keychain.util.ShareHelper;
public class DecryptTextFragment extends DecryptFragment {
public static final String ARG_CIPHERTEXT = "ciphertext";
// view
private LinearLayout mValidLayout;
private LinearLayout mInvalidLayout;
private Button mInvalidButton;
private TextView mText;
private View mShareButton;
private View mCopyButton;
// model
private String mCiphertext;
/**
* Creates new instance of this fragment
*/
public static DecryptTextFragment newInstance(String ciphertext) {
DecryptTextFragment frag = new DecryptTextFragment();
Bundle args = new Bundle();
args.putString(ARG_CIPHERTEXT, ciphertext);
frag.setArguments(args);
return frag;
}
/**
* Inflate the layout for this fragment
*/
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.decrypt_text_fragment, container, false);
mValidLayout = (LinearLayout) view.findViewById(R.id.decrypt_text_valid);
mInvalidLayout = (LinearLayout) view.findViewById(R.id.decrypt_text_invalid);
mInvalidButton = (Button) view.findViewById(R.id.decrypt_text_invalid_button);
mText = (TextView) view.findViewById(R.id.decrypt_text_plaintext);
mShareButton = view.findViewById(R.id.action_decrypt_share_plaintext);
mCopyButton = view.findViewById(R.id.action_decrypt_copy_plaintext);
mShareButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(sendWithChooserExcludingEncrypt(mText.getText().toString()));
}
});
mCopyButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
copyToClipboard(mText.getText().toString());
}
});
mInvalidButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mInvalidLayout.setVisibility(View.GONE);
mValidLayout.setVisibility(View.VISIBLE);
}
});
return view;
}
/**
* Create Intent Chooser but exclude decrypt activites
*/
private Intent sendWithChooserExcludingEncrypt(String text) {
Intent prototype = createSendIntent(text);
String title = getString(R.string.title_share_file);
// we don't want to decrypt the decrypted, no inception ;)
String[] blacklist = new String[]{
Constants.PACKAGE_NAME + ".ui.DecryptTextActivity",
"org.thialfihar.android.apg.ui.DecryptActivity"
};
return new ShareHelper(getActivity()).createChooserExcluding(prototype, title, blacklist);
}
private Intent createSendIntent(String text) {
Intent sendIntent = new Intent(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, text);
sendIntent.setType("text/plain");
return sendIntent;
}
private void copyToClipboard(String text) {
ClipboardReflection.copyToClipboard(getActivity(), text);
Notify.showNotify(getActivity(), R.string.text_copied_to_clipboard, Notify.Style.INFO);
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String ciphertext = getArguments().getString(ARG_CIPHERTEXT);
if (ciphertext != null) {
mCiphertext = ciphertext;
decryptStart();
}
}
@Override
protected void decryptStart() {
Log.d(Constants.TAG, "decryptStart");
// Send all information needed to service to decrypt in other thread
Intent intent = new Intent(getActivity(), KeychainIntentService.class);
// fill values for this action
Bundle data = new Bundle();
intent.setAction(KeychainIntentService.ACTION_DECRYPT_VERIFY);
// data
data.putInt(KeychainIntentService.TARGET, KeychainIntentService.IO_BYTES);
data.putByteArray(KeychainIntentService.DECRYPT_CIPHERTEXT_BYTES, mCiphertext.getBytes());
data.putString(KeychainIntentService.DECRYPT_PASSPHRASE, mPassphrase);
data.putByteArray(KeychainIntentService.DECRYPT_NFC_DECRYPTED_SESSION_KEY, mNfcDecryptedSessionKey);
intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
// Message is received after encrypting is done in KeychainIntentService
KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(getActivity(),
getString(R.string.progress_decrypting), ProgressDialog.STYLE_HORIZONTAL) {
public void handleMessage(Message message) {
// handle messages by standard KeychainIntentServiceHandler first
super.handleMessage(message);
if (message.arg1 == KeychainIntentServiceHandler.MESSAGE_OKAY) {
// get returned data bundle
Bundle returnData = message.getData();
DecryptVerifyResult pgpResult =
returnData.getParcelable(DecryptVerifyResult.EXTRA_RESULT);
if (pgpResult.isPending()) {
if ((pgpResult.getResult() & DecryptVerifyResult.RESULT_PENDING_ASYM_PASSPHRASE) ==
DecryptVerifyResult.RESULT_PENDING_ASYM_PASSPHRASE) {
startPassphraseDialog(pgpResult.getKeyIdPassphraseNeeded());
} else if ((pgpResult.getResult() & DecryptVerifyResult.RESULT_PENDING_SYM_PASSPHRASE) ==
DecryptVerifyResult.RESULT_PENDING_SYM_PASSPHRASE) {
startPassphraseDialog(Constants.key.symmetric);
} else if ((pgpResult.getResult() & DecryptVerifyResult.RESULT_PENDING_NFC) ==
DecryptVerifyResult.RESULT_PENDING_NFC) {
startNfcDecrypt(pgpResult.getNfcSubKeyId(), pgpResult.getNfcPassphrase(), pgpResult.getNfcEncryptedSessionKey());
} else {
throw new RuntimeException("Unhandled pending result!");
}
} else if (pgpResult.success()) {
byte[] decryptedMessage = returnData
.getByteArray(KeychainIntentService.RESULT_DECRYPTED_BYTES);
mText.setText(new String(decryptedMessage));
pgpResult.createNotify(getActivity()).show();
// display signature result in activity
boolean valid = onResult(pgpResult);
if (valid) {
mInvalidLayout.setVisibility(View.GONE);
mValidLayout.setVisibility(View.VISIBLE);
} else {
mInvalidLayout.setVisibility(View.VISIBLE);
mValidLayout.setVisibility(View.GONE);
}
} else {
pgpResult.createNotify(getActivity()).show();
// TODO: show also invalid layout with different text?
}
}
}
};
// Create a new Messenger for the communication back
Messenger messenger = new Messenger(saveHandler);
intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
// show progress dialog
saveHandler.showProgressDialog(getActivity());
// start service with intent
getActivity().startService(intent);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case REQUEST_CODE_PASSPHRASE: {
if (resultCode == Activity.RESULT_OK && data != null) {
mPassphrase = data.getStringExtra(PassphraseDialogActivity.MESSAGE_DATA_PASSPHRASE);
decryptStart();
} else {
getActivity().finish();
}
return;
}
case REQUEST_CODE_NFC_DECRYPT: {
if (resultCode == Activity.RESULT_OK && data != null) {
mNfcDecryptedSessionKey = data.getByteArrayExtra(OpenPgpApi.EXTRA_NFC_DECRYPTED_SESSION_KEY);
decryptStart();
} else {
getActivity().finish();
}
return;
}
default: {
super.onActivityResult(requestCode, resultCode, data);
}
}
}
}
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