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/*
* Copyright (C) 2013-2014 Dominik Schürmann <dominik@dominikschuermann.de>
* Copyright (C) 2013 Bahtiar 'kalkin' Gadimov
*
* 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 java.util.ArrayList;
import java.util.Date;
import org.spongycastle.openpgp.PGPPublicKey;
import org.spongycastle.openpgp.PGPPublicKeyRing;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.Id;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.compatibility.ClipboardReflection;
import org.sufficientlysecure.keychain.helper.ExportHelper;
import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
import org.sufficientlysecure.keychain.provider.KeychainContract.Keys;
import org.sufficientlysecure.keychain.provider.KeychainContract.UserIds;
import org.sufficientlysecure.keychain.provider.ProviderHelper;
import org.sufficientlysecure.keychain.ui.adapter.ViewKeyKeysAdapter;
import org.sufficientlysecure.keychain.ui.adapter.ViewKeyUserIdsAdapter;
import org.sufficientlysecure.keychain.ui.dialog.DeleteKeyDialogFragment;
import org.sufficientlysecure.keychain.ui.dialog.ShareNfcDialogFragment;
import org.sufficientlysecure.keychain.ui.dialog.ShareQrCodeDialogFragment;
import org.sufficientlysecure.keychain.util.Log;
import android.annotation.SuppressLint;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.nfc.NdefMessage;
import android.nfc.NdefRecord;
import android.nfc.NfcAdapter;
import android.nfc.NfcAdapter.CreateNdefMessageCallback;
import android.nfc.NfcAdapter.OnNdefPushCompleteCallback;
import android.nfc.NfcEvent;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.text.format.DateFormat;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import com.actionbarsherlock.app.SherlockFragmentActivity;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuItem;
import com.beardedhen.androidbootstrap.BootstrapButton;
@SuppressLint("NewApi")
public class ViewKeyActivity extends SherlockFragmentActivity implements CreateNdefMessageCallback,
OnNdefPushCompleteCallback, LoaderManager.LoaderCallbacks<Cursor> {
ExportHelper mExportHelper;
private Uri mDataUri;
private PGPPublicKey mPublicKey;
private TextView mName;
private TextView mEmail;
private TextView mComment;
private TextView mAlgorithm;
private TextView mKeyId;
private TextView mExpiry;
private TextView mCreation;
private TextView mFingerprint;
private BootstrapButton mActionEncrypt;
private ListView mUserIds;
private ListView mKeys;
// NFC
private NfcAdapter mNfcAdapter;
private byte[] mSharedKeyringBytes;
private static final int NFC_SENT = 1;
private static final int LOADER_ID_KEYRING = 0;
private static final int LOADER_ID_USER_IDS = 1;
private static final int LOADER_ID_KEYS = 2;
private ViewKeyUserIdsAdapter mUserIdsAdapter;
private ViewKeyKeysAdapter mKeysAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mExportHelper = new ExportHelper(this);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setIcon(android.R.color.transparent);
getSupportActionBar().setHomeButtonEnabled(true);
setContentView(R.layout.view_key_activity);
mName = (TextView) findViewById(R.id.name);
mEmail = (TextView) findViewById(R.id.email);
mComment = (TextView) findViewById(R.id.comment);
mKeyId = (TextView) findViewById(R.id.key_id);
mAlgorithm = (TextView) findViewById(R.id.algorithm);
mCreation = (TextView) findViewById(R.id.creation);
mExpiry = (TextView) findViewById(R.id.expiry);
mFingerprint = (TextView) findViewById(R.id.fingerprint);
mActionEncrypt = (BootstrapButton) findViewById(R.id.action_encrypt);
mUserIds = (ListView) findViewById(R.id.user_ids);
mKeys = (ListView) findViewById(R.id.keys);
Intent intent = getIntent();
mDataUri = intent.getData();
if (mDataUri == null) {
Log.e(Constants.TAG, "Intent data missing. Should be Uri of key!");
finish();
return;
} else {
Log.d(Constants.TAG, "uri: " + mDataUri);
loadData(mDataUri);
initNfc(mDataUri);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
getSupportMenuInflater().inflate(R.menu.key_view, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
Intent homeIntent = new Intent(this, KeyListPublicActivity.class);
homeIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(homeIntent);
return true;
case R.id.menu_key_view_update:
updateFromKeyserver(mDataUri);
return true;
case R.id.menu_key_view_sign:
signKey(mDataUri);
return true;
case R.id.menu_key_view_export_keyserver:
uploadToKeyserver(mDataUri);
return true;
case R.id.menu_key_view_export_file:
mExportHelper.showExportKeysDialog(mDataUri, Id.type.public_key, Constants.path.APP_DIR
+ "/pubexport.asc");
return true;
case R.id.menu_key_view_share_default:
shareKey(mDataUri);
return true;
case R.id.menu_key_view_share_qr_code:
shareKeyQrCode(mDataUri);
return true;
case R.id.menu_key_view_share_nfc:
shareNfc();
return true;
case R.id.menu_key_view_share_clipboard:
copyToClipboard(mDataUri);
return true;
case R.id.menu_key_view_delete: {
// Message is received after key is deleted
Handler returnHandler = new Handler() {
@Override
public void handleMessage(Message message) {
if (message.what == DeleteKeyDialogFragment.MESSAGE_OKAY) {
setResult(RESULT_CANCELED);
finish();
}
}
};
mExportHelper.deleteKey(mDataUri, Id.type.public_key, returnHandler);
return true;
}
}
return super.onOptionsItemSelected(item);
}
private void loadData(Uri dataUri) {
// TODO: don't use pubkey object, use database!!!
PGPPublicKeyRing ring = (PGPPublicKeyRing) ProviderHelper.getPGPKeyRing(this, dataUri);
mPublicKey = ring.getPublicKey();
mKeyId.setText(PgpKeyHelper.shortifyFingerprint(PgpKeyHelper
.convertFingerprintToHex(mPublicKey.getFingerprint())));
String fingerprint = PgpKeyHelper.convertFingerprintToHex(mPublicKey.getFingerprint());
fingerprint = fingerprint.replace(" ", "\n");
mFingerprint.setText(fingerprint);
// TODO: get image with getUserAttributes() on key and then PGPUserAttributeSubpacketVector
Date expiryDate = PgpKeyHelper.getExpiryDate(mPublicKey);
if (expiryDate == null) {
mExpiry.setText(R.string.none);
} else {
mExpiry.setText(DateFormat.getDateFormat(getApplicationContext()).format(expiryDate));
}
mCreation.setText(DateFormat.getDateFormat(getApplicationContext()).format(
PgpKeyHelper.getCreationDate(mPublicKey)));
mAlgorithm.setText(PgpKeyHelper.getAlgorithmInfo(mPublicKey));
mActionEncrypt.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
long[] encryptionKeyIds = new long[] { mPublicKey.getKeyID() };
Intent intent = new Intent(ViewKeyActivity.this, EncryptActivity.class);
intent.setAction(EncryptActivity.ACTION_ENCRYPT);
intent.putExtra(EncryptActivity.EXTRA_ENCRYPTION_KEY_IDS, encryptionKeyIds);
// used instead of startActivity set actionbar based on callingPackage
startActivityForResult(intent, 0);
}
});
mUserIdsAdapter = new ViewKeyUserIdsAdapter(this, null, 0);
mUserIds.setAdapter(mUserIdsAdapter);
// mUserIds.setEmptyView(findViewById(android.R.id.empty));
// mUserIds.setClickable(true);
// mUserIds.setOnItemClickListener(new AdapterView.OnItemClickListener() {
// @Override
// public void onItemClick(AdapterView<?> arg0, View arg1, int position, long id) {
// }
// });
mKeysAdapter = new ViewKeyKeysAdapter(this, null, 0);
mKeys.setAdapter(mKeysAdapter);
// Prepare the loader. Either re-connect with an existing one,
// or start a new one.
getSupportLoaderManager().initLoader(LOADER_ID_KEYRING, null, this);
getSupportLoaderManager().initLoader(LOADER_ID_USER_IDS, null, this);
getSupportLoaderManager().initLoader(LOADER_ID_KEYS, null, this);
}
static final String[] KEYRING_PROJECTION = new String[] { KeyRings._ID, KeyRings.MASTER_KEY_ID,
UserIds.USER_ID };
static final String[] USER_IDS_PROJECTION = new String[] { UserIds._ID, UserIds.USER_ID,
UserIds.RANK, };
// not the main user id
static final String USER_IDS_SELECTION = UserIds.RANK + " > 0 ";
static final String USER_IDS_SORT_ORDER = UserIds.USER_ID + " COLLATE LOCALIZED ASC";
static final String[] KEYS_PROJECTION = new String[] { Keys._ID, Keys.KEY_ID,
Keys.IS_MASTER_KEY, Keys.ALGORITHM, Keys.KEY_SIZE, Keys.CAN_CERTIFY, Keys.CAN_SIGN,
Keys.CAN_ENCRYPT, };
static final String KEYS_SORT_ORDER = Keys.RANK + " ASC";
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
switch (id) {
case LOADER_ID_KEYRING: {
Uri baseUri = mDataUri;
// Now create and return a CursorLoader that will take care of
// creating a Cursor for the data being displayed.
return new CursorLoader(this, baseUri, KEYRING_PROJECTION, null, null, null);
}
case LOADER_ID_USER_IDS: {
Uri baseUri = UserIds.buildUserIdsUri(mDataUri);
// Now create and return a CursorLoader that will take care of
// creating a Cursor for the data being displayed.
return new CursorLoader(this, baseUri, USER_IDS_PROJECTION, USER_IDS_SELECTION, null,
USER_IDS_SORT_ORDER);
}
case LOADER_ID_KEYS: {
Uri baseUri = Keys.buildKeysUri(mDataUri);
// Now create and return a CursorLoader that will take care of
// creating a Cursor for the data being displayed.
return new CursorLoader(this, baseUri, KEYS_PROJECTION, null, null, KEYS_SORT_ORDER);
}
default:
return null;
}
}
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
// Swap the new cursor in. (The framework will take care of closing the
// old cursor once we return.)
switch (loader.getId()) {
case LOADER_ID_KEYRING:
if (data.moveToFirst()) {
String[] mainUserId = PgpKeyHelper.splitUserId(data.getString(2));
setTitle(mainUserId[0]);
mName.setText(mainUserId[0]);
mEmail.setText(mainUserId[1]);
mComment.setText(mainUserId[2]);
}
break;
case LOADER_ID_USER_IDS:
mUserIdsAdapter.swapCursor(data);
break;
case LOADER_ID_KEYS:
mKeysAdapter.swapCursor(data);
break;
default:
break;
}
}
/**
* This is called when the last Cursor provided to onLoadFinished() above is about to be closed.
* We need to make sure we are no longer using it.
*/
public void onLoaderReset(Loader<Cursor> loader) {
switch (loader.getId()) {
case LOADER_ID_KEYRING:
// TODO?
break;
case LOADER_ID_USER_IDS:
mUserIdsAdapter.swapCursor(null);
break;
case LOADER_ID_KEYS:
mKeysAdapter.swapCursor(null);
break;
default:
break;
}
}
private void uploadToKeyserver(Uri dataUri) {
long keyRingRowId = Long.valueOf(dataUri.getLastPathSegment());
Intent uploadIntent = new Intent(this, KeyServerUploadActivity.class);
uploadIntent.setAction(KeyServerUploadActivity.ACTION_EXPORT_KEY_TO_SERVER);
uploadIntent.putExtra(KeyServerUploadActivity.EXTRA_KEYRING_ROW_ID, (int) keyRingRowId);
startActivityForResult(uploadIntent, Id.request.export_to_server);
}
private void updateFromKeyserver(Uri dataUri) {
long updateKeyId = 0;
PGPPublicKeyRing updateRing = (PGPPublicKeyRing) ProviderHelper
.getPGPKeyRing(this, dataUri);
if (updateRing != null) {
updateKeyId = PgpKeyHelper.getMasterKey(updateRing).getKeyID();
}
if (updateKeyId == 0) {
Log.e(Constants.TAG, "this shouldn't happen. KeyId == 0!");
return;
}
Intent queryIntent = new Intent(this, KeyServerQueryActivity.class);
queryIntent.setAction(KeyServerQueryActivity.ACTION_LOOK_UP_KEY_ID_AND_RETURN);
queryIntent.putExtra(KeyServerQueryActivity.EXTRA_KEY_ID, updateKeyId);
// TODO: lookup??
startActivityForResult(queryIntent, Id.request.look_up_key_id);
}
private void signKey(Uri dataUri) {
long keyId = 0;
PGPPublicKeyRing signKey = (PGPPublicKeyRing) ProviderHelper.getPGPKeyRing(this, dataUri);
if (signKey != null) {
keyId = PgpKeyHelper.getMasterKey(signKey).getKeyID();
}
if (keyId == 0) {
Log.e(Constants.TAG, "this shouldn't happen. KeyId == 0!");
return;
}
Intent signIntent = new Intent(this, SignKeyActivity.class);
signIntent.putExtra(SignKeyActivity.EXTRA_KEY_ID, keyId);
startActivity(signIntent);
}
private void shareKey(Uri dataUri) {
// get public keyring as ascii armored string
long masterKeyId = ProviderHelper.getMasterKeyId(this, dataUri);
ArrayList<String> keyringArmored = ProviderHelper.getKeyRingsAsArmoredString(this, dataUri,
new long[] { masterKeyId });
// let user choose application
Intent sendIntent = new Intent(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, keyringArmored.get(0));
sendIntent.setType("text/plain");
startActivity(Intent.createChooser(sendIntent,
getResources().getText(R.string.action_share_key_with)));
}
private void shareKeyQrCode(Uri dataUri) {
// get public keyring as ascii armored string
long masterKeyId = ProviderHelper.getMasterKeyId(this, dataUri);
ArrayList<String> keyringArmored = ProviderHelper.getKeyRingsAsArmoredString(this, dataUri,
new long[] { masterKeyId });
ShareQrCodeDialogFragment dialog = ShareQrCodeDialogFragment.newInstance(keyringArmored
.get(0));
dialog.show(getSupportFragmentManager(), "shareQrCodeDialog");
}
private void copyToClipboard(Uri dataUri) {
// get public keyring as ascii armored string
long masterKeyId = ProviderHelper.getMasterKeyId(this, dataUri);
ArrayList<String> keyringArmored = ProviderHelper.getKeyRingsAsArmoredString(this, dataUri,
new long[] { masterKeyId });
ClipboardReflection.copyToClipboard(this, keyringArmored.get(0));
Toast.makeText(getApplicationContext(), R.string.key_copied_to_clipboard, Toast.LENGTH_LONG)
.show();
}
private void shareNfc() {
ShareNfcDialogFragment dialog = ShareNfcDialogFragment.newInstance();
dialog.show(getSupportFragmentManager(), "shareNfcDialog");
}
/**
* NFC: Initialize NFC sharing if OS and device supports it
*/
private void initNfc(Uri dataUri) {
// check if NFC Beam is supported (>= Android 4.1)
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
// Check for available NFC Adapter
mNfcAdapter = NfcAdapter.getDefaultAdapter(this);
if (mNfcAdapter != null) {
// init nfc
// get public keyring as byte array
long masterKeyId = ProviderHelper.getMasterKeyId(this, dataUri);
mSharedKeyringBytes = ProviderHelper.getKeyRingsAsByteArray(this, dataUri,
new long[] { masterKeyId });
// Register callback to set NDEF message
mNfcAdapter.setNdefPushMessageCallback(this, this);
// Register callback to listen for message-sent success
mNfcAdapter.setOnNdefPushCompleteCallback(this, this);
}
}
}
/**
* NFC: Implementation for the CreateNdefMessageCallback interface
*/
@Override
public NdefMessage createNdefMessage(NfcEvent event) {
/**
* When a device receives a push with an AAR in it, the application specified in the AAR is
* guaranteed to run. The AAR overrides the tag dispatch system. You can add it back in to
* guarantee that this activity starts when receiving a beamed message. For now, this code
* uses the tag dispatch system.
*/
NdefMessage msg = new NdefMessage(NdefRecord.createMime(Constants.NFC_MIME,
mSharedKeyringBytes), NdefRecord.createApplicationRecord(Constants.PACKAGE_NAME));
return msg;
}
/**
* NFC: Implementation for the OnNdefPushCompleteCallback interface
*/
@Override
public void onNdefPushComplete(NfcEvent arg0) {
// A handler is needed to send messages to the activity when this
// callback occurs, because it happens from a binder thread
mNfcHandler.obtainMessage(NFC_SENT).sendToTarget();
}
/**
* NFC: This handler receives a message from onNdefPushComplete
*/
private final Handler mNfcHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case NFC_SENT:
Toast.makeText(getApplicationContext(), R.string.nfc_successfull, Toast.LENGTH_LONG)
.show();
break;
}
}
};
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (!mExportHelper.handleActivityResult(requestCode, resultCode, data)) {
super.onActivityResult(requestCode, resultCode, data);
}
}
}
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