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/*
* Copyright (C) 2015 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.database.Cursor;
import android.graphics.Typeface;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.pgp.exception.PgpKeyNotFoundException;
import org.sufficientlysecure.keychain.experimental.SentenceConfirm;
import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
import org.sufficientlysecure.keychain.provider.ProviderHelper;
import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
import org.sufficientlysecure.keychain.util.Log;
import java.io.IOException;
public class CertifyFingerprintFragment extends LoaderFragment implements
LoaderManager.LoaderCallbacks<Cursor> {
static final int REQUEST_CERTIFY = 1;
public static final String ARG_DATA_URI = "uri";
public static final String ARG_ENABLE_PHRASES_CONFIRM = "enable_word_confirm";
private TextView mActionYes;
private TextView mFingerprint;
private TextView mIntro;
private TextView mHeader;
private static final int LOADER_ID_UNIFIED = 0;
private Uri mDataUri;
private boolean mEnablePhrasesConfirm;
/**
* Creates new instance of this fragment
*/
public static CertifyFingerprintFragment newInstance(Uri dataUri, boolean enablePhrasesConfirm) {
CertifyFingerprintFragment frag = new CertifyFingerprintFragment();
Bundle args = new Bundle();
args.putParcelable(ARG_DATA_URI, dataUri);
args.putBoolean(ARG_ENABLE_PHRASES_CONFIRM, enablePhrasesConfirm);
frag.setArguments(args);
return frag;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup superContainer, Bundle savedInstanceState) {
View root = super.onCreateView(inflater, superContainer, savedInstanceState);
View view = inflater.inflate(R.layout.certify_fingerprint_fragment, getContainer());
TextView actionNo = (TextView) view.findViewById(R.id.certify_fingerprint_button_no);
mActionYes = (TextView) view.findViewById(R.id.certify_fingerprint_button_yes);
mFingerprint = (TextView) view.findViewById(R.id.certify_fingerprint_fingerprint);
mIntro = (TextView) view.findViewById(R.id.certify_fingerprint_intro);
mHeader = (TextView) view.findViewById(R.id.certify_fingerprint_fingerprint_header);
actionNo.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
getActivity().finish();
}
});
mActionYes.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
certify(mDataUri);
}
});
return root;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
Uri dataUri = getArguments().getParcelable(ARG_DATA_URI);
if (dataUri == null) {
Log.e(Constants.TAG, "Data missing. Should be Uri of key!");
getActivity().finish();
return;
}
mEnablePhrasesConfirm = getArguments().getBoolean(ARG_ENABLE_PHRASES_CONFIRM);
if (mEnablePhrasesConfirm) {
mIntro.setText(R.string.certify_fingerprint_text_phrases);
mHeader.setText(R.string.section_phrases);
mActionYes.setText(R.string.btn_match_phrases);
}
loadData(dataUri);
}
private void loadData(Uri dataUri) {
mDataUri = dataUri;
Log.i(Constants.TAG, "mDataUri: " + mDataUri.toString());
// Prepare the loaders. Either re-connect with an existing ones,
// or start new ones.
getLoaderManager().initLoader(LOADER_ID_UNIFIED, null, this);
}
static final String[] UNIFIED_PROJECTION = new String[]{
KeyRings._ID, KeyRings.FINGERPRINT,
};
static final int INDEX_UNIFIED_FINGERPRINT = 1;
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
setContentShown(false);
switch (id) {
case LOADER_ID_UNIFIED: {
Uri baseUri = KeyRings.buildUnifiedKeyRingUri(mDataUri);
return new CursorLoader(getActivity(), baseUri, UNIFIED_PROJECTION, null, null, null);
}
default:
return null;
}
}
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
/* TODO better error handling? May cause problems when a key is deleted,
* because the notification triggers faster than the activity closes.
*/
// Avoid NullPointerExceptions...
if (data.getCount() == 0) {
return;
}
// Swap the new cursor in. (The framework will take care of closing the
// old cursor once we return.)
switch (loader.getId()) {
case LOADER_ID_UNIFIED: {
if (data.moveToFirst()) {
byte[] fingerprintBlob = data.getBlob(INDEX_UNIFIED_FINGERPRINT);
if (mEnablePhrasesConfirm) {
displayWordConfirm(fingerprintBlob);
} else {
displayHexConfirm(fingerprintBlob);
}
break;
}
}
}
setContentShown(true);
}
private void displayHexConfirm(byte[] fingerprintBlob) {
String fingerprint = KeyFormattingUtils.convertFingerprintToHex(fingerprintBlob);
mFingerprint.setText(KeyFormattingUtils.colorizeFingerprint(fingerprint));
}
private void displayWordConfirm(byte[] fingerprintBlob) {
// String fingerprint = ExperimentalWordConfirm.getWords(getActivity(), fingerprintBlob);
String fingerprint;
try {
fingerprint = new SentenceConfirm(getActivity()).fromBytes(fingerprintBlob, 20);
} catch (IOException e) {
fingerprint = "-";
Log.e(Constants.TAG, "Problem when creating sentence!", e);
}
mFingerprint.setTextSize(18);
mFingerprint.setTypeface(Typeface.DEFAULT, Typeface.BOLD);
mFingerprint.setText(fingerprint);
}
/**
* 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) {
}
private void certify(Uri dataUri) {
long keyId = 0;
try {
keyId = new ProviderHelper(getActivity())
.getCachedPublicKeyRing(dataUri)
.extractOrGetMasterKeyId();
} catch (PgpKeyNotFoundException e) {
Log.e(Constants.TAG, "key not found!", e);
}
Intent certifyIntent = new Intent(getActivity(), CertifyKeyActivity.class);
certifyIntent.putExtras(getActivity().getIntent());
certifyIntent.putExtra(CertifyKeyActivity.EXTRA_KEY_IDS, new long[]{keyId});
startActivityForResult(certifyIntent, REQUEST_CERTIFY);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
// always just pass this one through
if (requestCode == REQUEST_CERTIFY) {
getActivity().setResult(resultCode, data);
getActivity().finish();
return;
}
super.onActivityResult(requestCode, resultCode, data);
}
}
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