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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.database.Cursor;
import android.graphics.Color;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.text.Spannable;
import android.text.SpannableStringBuilder;
import android.text.format.DateFormat;
import android.text.style.ForegroundColorSpan;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import android.widget.TextView;
import com.beardedhen.androidbootstrap.BootstrapButton;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.pgp.PgpKeyHelper;
import org.sufficientlysecure.keychain.provider.KeychainContract;
import org.sufficientlysecure.keychain.provider.ProviderHelper;
import org.sufficientlysecure.keychain.ui.adapter.ViewKeyKeysAdapter;
import org.sufficientlysecure.keychain.ui.adapter.ViewKeyUserIdsAdapter;
import org.sufficientlysecure.keychain.util.Log;
import java.util.Date;
public class ViewKeyMainFragment extends Fragment implements
LoaderManager.LoaderCallbacks<Cursor>{
public static final String ARG_DATA_URI = "uri";
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;
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;
private Uri mDataUri;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.view_key_main_fragment, container, false);
mName = (TextView) view.findViewById(R.id.name);
mEmail = (TextView) view.findViewById(R.id.email);
mComment = (TextView) view.findViewById(R.id.comment);
mKeyId = (TextView) view.findViewById(R.id.key_id);
mAlgorithm = (TextView) view.findViewById(R.id.algorithm);
mCreation = (TextView) view.findViewById(R.id.creation);
mExpiry = (TextView) view.findViewById(R.id.expiry);
mFingerprint = (TextView) view.findViewById(R.id.fingerprint);
mUserIds = (ListView) view.findViewById(R.id.user_ids);
mKeys = (ListView) view.findViewById(R.id.keys);
mActionEncrypt = (BootstrapButton) view.findViewById(R.id.action_encrypt);
return view;
}
@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;
}
loadData(dataUri);
}
private void loadData(Uri dataUri) {
if (dataUri.equals(mDataUri)) {
Log.d(Constants.TAG, "Same URI, no need to load the data again!");
return;
}
mDataUri = dataUri;
Log.i(Constants.TAG, "mDataUri: " + mDataUri.toString());
mActionEncrypt.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
encryptToContact(mDataUri);
}
});
mUserIdsAdapter = new ViewKeyUserIdsAdapter(getActivity(), null, 0);
mUserIds.setAdapter(mUserIdsAdapter);
mKeysAdapter = new ViewKeyKeysAdapter(getActivity(), null, 0);
mKeys.setAdapter(mKeysAdapter);
// Prepare the loaders. Either re-connect with an existing ones,
// or start new ones.
getActivity().getSupportLoaderManager().initLoader(LOADER_ID_KEYRING, null, this);
getActivity().getSupportLoaderManager().initLoader(LOADER_ID_USER_IDS, null, this);
getActivity().getSupportLoaderManager().initLoader(LOADER_ID_KEYS, null, this);
}
static final String[] KEYRING_PROJECTION = new String[]{KeychainContract.KeyRings._ID, KeychainContract.KeyRings.MASTER_KEY_ID,
KeychainContract.UserIds.USER_ID};
static final int KEYRING_INDEX_ID = 0;
static final int KEYRING_INDEX_MASTER_KEY_ID = 1;
static final int KEYRING_INDEX_USER_ID = 2;
static final String[] USER_IDS_PROJECTION = new String[]{KeychainContract.UserIds._ID, KeychainContract.UserIds.USER_ID,
KeychainContract.UserIds.RANK,};
// not the main user id
static final String USER_IDS_SELECTION = KeychainContract.UserIds.RANK + " > 0 ";
static final String USER_IDS_SORT_ORDER = KeychainContract.UserIds.USER_ID + " COLLATE LOCALIZED ASC";
static final String[] KEYS_PROJECTION = new String[]{KeychainContract.Keys._ID, KeychainContract.Keys.KEY_ID,
KeychainContract.Keys.IS_MASTER_KEY, KeychainContract.Keys.ALGORITHM, KeychainContract.Keys.KEY_SIZE, KeychainContract.Keys.CAN_CERTIFY, KeychainContract.Keys.CAN_SIGN,
KeychainContract.Keys.CAN_ENCRYPT, KeychainContract.Keys.CREATION, KeychainContract.Keys.EXPIRY, KeychainContract.Keys.FINGERPRINT};
static final String KEYS_SORT_ORDER = KeychainContract.Keys.RANK + " ASC";
static final int KEYS_INDEX_ID = 0;
static final int KEYS_INDEX_KEY_ID = 1;
static final int KEYS_INDEX_IS_MASTER_KEY = 2;
static final int KEYS_INDEX_ALGORITHM = 3;
static final int KEYS_INDEX_KEY_SIZE = 4;
static final int KEYS_INDEX_CAN_CERTIFY = 5;
static final int KEYS_INDEX_CAN_SIGN = 6;
static final int KEYS_INDEX_CAN_ENCRYPT = 7;
static final int KEYS_INDEX_CREATION = 8;
static final int KEYS_INDEX_EXPIRY = 9;
static final int KEYS_INDEX_FINGERPRINT = 10;
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(getActivity(), baseUri, KEYRING_PROJECTION, null, null, null);
}
case LOADER_ID_USER_IDS: {
Uri baseUri = KeychainContract.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(getActivity(), baseUri, USER_IDS_PROJECTION, USER_IDS_SELECTION, null,
USER_IDS_SORT_ORDER);
}
case LOADER_ID_KEYS: {
Uri baseUri = KeychainContract.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(getActivity(), 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()) {
// get name, email, and comment from USER_ID
String[] mainUserId = PgpKeyHelper.splitUserId(data
.getString(KEYRING_INDEX_USER_ID));
if (mainUserId[0] != null) {
getActivity().setTitle(mainUserId[0]);
mName.setText(mainUserId[0]);
} else {
getActivity().setTitle(R.string.user_id_no_name);
mName.setText(R.string.user_id_no_name);
}
mEmail.setText(mainUserId[1]);
mComment.setText(mainUserId[2]);
}
break;
case LOADER_ID_USER_IDS:
mUserIdsAdapter.swapCursor(data);
break;
case LOADER_ID_KEYS:
// the first key here is our master key
if (data.moveToFirst()) {
// get key id from MASTER_KEY_ID
long keyId = data.getLong(KEYS_INDEX_KEY_ID);
String keyIdStr = PgpKeyHelper.convertKeyIdToHex(keyId);
mKeyId.setText(keyIdStr);
// get creation date from CREATION
if (data.isNull(KEYS_INDEX_CREATION)) {
mCreation.setText(R.string.none);
} else {
Date creationDate = new Date(data.getLong(KEYS_INDEX_CREATION) * 1000);
mCreation.setText(DateFormat.getDateFormat(getActivity().getApplicationContext()).format(
creationDate));
}
// get expiry date from EXPIRY
if (data.isNull(KEYS_INDEX_EXPIRY)) {
mExpiry.setText(R.string.none);
} else {
Date expiryDate = new Date(data.getLong(KEYS_INDEX_EXPIRY) * 1000);
mExpiry.setText(DateFormat.getDateFormat(getActivity().getApplicationContext()).format(
expiryDate));
}
String algorithmStr = PgpKeyHelper.getAlgorithmInfo(
data.getInt(KEYS_INDEX_ALGORITHM), data.getInt(KEYS_INDEX_KEY_SIZE));
mAlgorithm.setText(algorithmStr);
byte[] fingerprintBlob = data.getBlob(KEYS_INDEX_FINGERPRINT);
if (fingerprintBlob == null) {
// FALLBACK for old database entries
fingerprintBlob = ProviderHelper.getFingerprint(getActivity(), mDataUri);
}
String fingerprint = PgpKeyHelper.convertFingerprintToHex(fingerprintBlob, true);
mFingerprint.setText(colorizeFingerprint(fingerprint));
}
mKeysAdapter.swapCursor(data);
break;
default:
break;
}
}
private SpannableStringBuilder colorizeFingerprint(String fingerprint) {
SpannableStringBuilder sb = new SpannableStringBuilder(fingerprint);
ForegroundColorSpan fcs = new ForegroundColorSpan(Color.BLACK);
// for each 4 characters of the fingerprint + 1 space
for (int i = 0; i < fingerprint.length(); i += 5) {
int minFingLength = Math.min(i + 4, fingerprint.length());
String fourChars = fingerprint.substring(i, minFingLength);
// Create a foreground color by converting the 4 fingerprint chars to an int hashcode
// and then converting that int to hex to use as a color
fcs = new ForegroundColorSpan(
Color.parseColor(String.format("#%06X", (0xFFFFFF & fourChars.hashCode()))));
sb.setSpan(fcs, i, minFingLength, Spannable.SPAN_INCLUSIVE_INCLUSIVE);
}
return sb;
}
/**
* 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:
// No resources need to be freed for this ID
break;
case LOADER_ID_USER_IDS:
mUserIdsAdapter.swapCursor(null);
break;
case LOADER_ID_KEYS:
mKeysAdapter.swapCursor(null);
break;
default:
break;
}
}
private void encryptToContact(Uri dataUri) {
long keyId = ProviderHelper.getMasterKeyId(getActivity(), dataUri);
long[] encryptionKeyIds = new long[]{keyId};
Intent intent = new Intent(getActivity(), 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);
}
private void certifyKey(Uri dataUri) {
Intent signIntent = new Intent(getActivity(), CertifyKeyActivity.class);
signIntent.setData(dataUri);
startActivity(signIntent);
}
}
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