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open-keychain
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open-keychain/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CertifyKeyFragment.java

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/*
* Copyright (C) 2013-2014 Dominik Schürmann <dominik@dominikschuermann.de>
* Copyright (C) 2014 Vincent Breitmoser <v.breitmoser@mugenguild.com>
*
* 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.database.Cursor;
import android.database.MatrixCursor;
import android.graphics.PorterDuff;
import android.net.Uri;
import android.os.Build.VERSION;
import android.os.Build.VERSION_CODES;
import android.os.Bundle;
import android.os.Message;
import android.os.Messenger;
import android.os.Parcel;
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.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.ListView;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.operations.results.CertifyResult;
import org.sufficientlysecure.keychain.operations.results.OperationResult;
import org.sufficientlysecure.keychain.pgp.KeyRing;
import org.sufficientlysecure.keychain.pgp.exception.PgpKeyNotFoundException;
import org.sufficientlysecure.keychain.provider.CachedPublicKeyRing;
import org.sufficientlysecure.keychain.provider.KeychainContract.UserPackets;
import org.sufficientlysecure.keychain.provider.KeychainDatabase.Tables;
import org.sufficientlysecure.keychain.provider.ProviderHelper;
import org.sufficientlysecure.keychain.service.CertifyActionsParcel;
import org.sufficientlysecure.keychain.service.CertifyActionsParcel.CertifyAction;
import org.sufficientlysecure.keychain.service.KeychainIntentService;
import org.sufficientlysecure.keychain.service.ServiceProgressHandler;
import org.sufficientlysecure.keychain.service.PassphraseCacheService;
import org.sufficientlysecure.keychain.ui.adapter.MultiUserIdsAdapter;
import org.sufficientlysecure.keychain.ui.dialog.ProgressDialogFragment;
import org.sufficientlysecure.keychain.ui.util.Notify;
import org.sufficientlysecure.keychain.ui.widget.CertifyKeySpinner;
import org.sufficientlysecure.keychain.ui.widget.KeySpinner;
import org.sufficientlysecure.keychain.util.Log;
import org.sufficientlysecure.keychain.util.Passphrase;
import org.sufficientlysecure.keychain.util.Preferences;
import java.lang.reflect.Method;
import java.util.ArrayList;
public class CertifyKeyFragment extends LoaderFragment
implements LoaderManager.LoaderCallbacks<Cursor> {
public static final int REQUEST_CODE_PASSPHRASE = 0x00008001;
private CheckBox mUploadKeyCheckbox;
ListView mUserIds;
private CertifyKeySpinner mCertifyKeySpinner;
private long[] mPubMasterKeyIds;
private long mSignMasterKeyId = Constants.key.none;
public static final String[] USER_IDS_PROJECTION = new String[]{
UserPackets._ID,
UserPackets.MASTER_KEY_ID,
UserPackets.USER_ID,
UserPackets.IS_PRIMARY,
UserPackets.IS_REVOKED
};
private static final int INDEX_MASTER_KEY_ID = 1;
private static final int INDEX_USER_ID = 2;
private static final int INDEX_IS_PRIMARY = 3;
private static final int INDEX_IS_REVOKED = 4;
private MultiUserIdsAdapter mUserIdsAdapter;
private Messenger mPassthroughMessenger;
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
// Start out with a progress indicator.
setContentShown(false);
mPubMasterKeyIds = getActivity().getIntent().getLongArrayExtra(CertifyKeyActivity.EXTRA_KEY_IDS);
if (mPubMasterKeyIds == null) {
Log.e(Constants.TAG, "List of key ids to certify missing!");
getActivity().finish();
return;
}
mPassthroughMessenger = getActivity().getIntent().getParcelableExtra(
KeychainIntentService.EXTRA_MESSENGER);
// preselect certify key id if given
long certifyKeyId = getActivity().getIntent().getLongExtra(CertifyKeyActivity.EXTRA_CERTIFY_KEY_ID, Constants.key.none);
if (certifyKeyId != Constants.key.none) {
try {
CachedPublicKeyRing key = (new ProviderHelper(getActivity())).getCachedPublicKeyRing(certifyKeyId);
if (key.canCertify()) {
mCertifyKeySpinner.setSelectedKeyId(certifyKeyId);
}
} catch (PgpKeyNotFoundException e) {
Log.e(Constants.TAG, "certify certify check failed", e);
}
}
mUserIdsAdapter = new MultiUserIdsAdapter(getActivity(), null, 0);
mUserIds.setAdapter(mUserIdsAdapter);
mUserIds.setDividerHeight(0);
getLoaderManager().initLoader(0, null, this);
OperationResult result = getActivity().getIntent().getParcelableExtra(CertifyKeyActivity.EXTRA_RESULT);
if (result != null) {
// display result from import
result.createNotify(getActivity()).show();
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup superContainer, Bundle savedInstanceState) {
View root = super.onCreateView(inflater, superContainer, savedInstanceState);
View view = inflater.inflate(R.layout.certify_key_fragment, getContainer());
mCertifyKeySpinner = (CertifyKeySpinner) view.findViewById(R.id.certify_key_spinner);
mUploadKeyCheckbox = (CheckBox) view.findViewById(R.id.sign_key_upload_checkbox);
mUserIds = (ListView) view.findViewById(R.id.view_key_user_ids);
// make certify image gray, like action icons
ImageView vActionCertifyImage =
(ImageView) view.findViewById(R.id.certify_key_action_certify_image);
vActionCertifyImage.setColorFilter(getResources().getColor(R.color.tertiary_text_light),
PorterDuff.Mode.SRC_IN);
mCertifyKeySpinner.setOnKeyChangedListener(new KeySpinner.OnKeyChangedListener() {
@Override
public void onKeyChanged(long masterKeyId) {
mSignMasterKeyId = masterKeyId;
}
});
View vCertifyButton = view.findViewById(R.id.certify_key_certify_button);
vCertifyButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (mSignMasterKeyId == Constants.key.none) {
Notify.create(getActivity(), getString(R.string.select_key_to_certify),
Notify.Style.ERROR).show();
} else {
initiateCertifying();
}
}
});
// If this is a debug build, don't upload by default
if (Constants.DEBUG) {
mUploadKeyCheckbox.setChecked(false);
}
return root;
}
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
Uri uri = UserPackets.buildUserIdsUri();
String selection, ids[];
{
// generate placeholders and string selection args
ids = new String[mPubMasterKeyIds.length];
StringBuilder placeholders = new StringBuilder("?");
for (int i = 0; i < mPubMasterKeyIds.length; i++) {
ids[i] = Long.toString(mPubMasterKeyIds[i]);
if (i != 0) {
placeholders.append(",?");
}
}
// put together selection string
selection = UserPackets.IS_REVOKED + " = 0" + " AND "
+ Tables.USER_PACKETS + "." + UserPackets.MASTER_KEY_ID
+ " IN (" + placeholders + ")";
}
return new CursorLoader(getActivity(), uri,
USER_IDS_PROJECTION, selection, ids,
Tables.USER_PACKETS + "." + UserPackets.MASTER_KEY_ID + " ASC"
+ ", " + Tables.USER_PACKETS + "." + UserPackets.USER_ID + " ASC"
);
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
MatrixCursor matrix = new MatrixCursor(new String[]{
"_id", "user_data", "grouped"
}) {
@Override
public byte[] getBlob(int column) {
// For some reason, getBlob was not implemented before ICS
if (VERSION.SDK_INT < VERSION_CODES.ICE_CREAM_SANDWICH) {
try {
// haha, yes there is int.class
Method m = MatrixCursor.class.getDeclaredMethod("get", new Class[]{int.class});
m.setAccessible(true);
return (byte[]) m.invoke(this, 1);
} catch (Exception e) {
throw new UnsupportedOperationException(e);
}
}
return super.getBlob(column);
}
};
data.moveToFirst();
long lastMasterKeyId = 0;
String lastName = "";
ArrayList<String> uids = new ArrayList<>();
boolean header = true;
// Iterate over all rows
while (!data.isAfterLast()) {
long masterKeyId = data.getLong(INDEX_MASTER_KEY_ID);
String userId = data.getString(INDEX_USER_ID);
KeyRing.UserId pieces = KeyRing.splitUserId(userId);
// Two cases:
boolean grouped = masterKeyId == lastMasterKeyId;
boolean subGrouped = data.isFirst() || grouped && lastName.equals(pieces.name);
// Remember for next loop
lastName = pieces.name;
Log.d(Constants.TAG, Long.toString(masterKeyId, 16) + (grouped ? "grouped" : "not grouped"));
if (!subGrouped) {
// 1. This name should NOT be grouped with the previous, so we flush the buffer
Parcel p = Parcel.obtain();
p.writeStringList(uids);
byte[] d = p.marshall();
p.recycle();
matrix.addRow(new Object[]{
lastMasterKeyId, d, header ? 1 : 0
});
// indicate that we have a header for this masterKeyId
header = false;
// Now clear the buffer, and add the new user id, for the next round
uids.clear();
}
// 2. This name should be grouped with the previous, just add to buffer
uids.add(userId);
lastMasterKeyId = masterKeyId;
// If this one wasn't grouped, the next one's gotta be a header
if (!grouped) {
header = true;
}
// Regardless of the outcome, move to next entry
data.moveToNext();
}
// If there is anything left in the buffer, flush it one last time
if (!uids.isEmpty()) {
Parcel p = Parcel.obtain();
p.writeStringList(uids);
byte[] d = p.marshall();
p.recycle();
matrix.addRow(new Object[]{
lastMasterKeyId, d, header ? 1 : 0
});
}
mUserIdsAdapter.swapCursor(matrix);
setContentShown(true, isResumed());
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {
mUserIdsAdapter.swapCursor(null);
}
/**
* handles the UI bits of the signing process on the UI thread
*/
private void initiateCertifying() {
// get the user's passphrase for this key (if required)
Passphrase passphrase;
try {
passphrase = PassphraseCacheService.getCachedPassphrase(getActivity(), mSignMasterKeyId, mSignMasterKeyId);
} catch (PassphraseCacheService.KeyNotFoundException e) {
Log.e(Constants.TAG, "Key not found!", e);
getActivity().finish();
return;
}
if (passphrase == null) {
Intent intent = new Intent(getActivity(), PassphraseDialogActivity.class);
intent.putExtra(PassphraseDialogActivity.EXTRA_SUBKEY_ID, mSignMasterKeyId);
startActivityForResult(intent, REQUEST_CODE_PASSPHRASE);
// bail out; need to wait until the user has entered the passphrase before trying again
} else {
startCertifying();
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case REQUEST_CODE_PASSPHRASE: {
if (resultCode == Activity.RESULT_OK && data != null) {
startCertifying();
}
return;
}
default: {
super.onActivityResult(requestCode, resultCode, data);
}
}
}
/**
* kicks off the actual signing process on a background thread
*/
private void startCertifying() {
// Bail out if there is not at least one user id selected
ArrayList<CertifyAction> certifyActions = mUserIdsAdapter.getSelectedCertifyActions();
if (certifyActions.isEmpty()) {
Notify.create(getActivity(), "No identities selected!",
Notify.Style.ERROR).show();
return;
}
Bundle data = new Bundle();
{
// fill values for this action
CertifyActionsParcel parcel = new CertifyActionsParcel(mSignMasterKeyId);
parcel.mCertifyActions.addAll(certifyActions);
data.putParcelable(KeychainIntentService.CERTIFY_PARCEL, parcel);
if (mUploadKeyCheckbox.isChecked()) {
String keyserver = Preferences.getPreferences(getActivity()).getPreferredKeyserver();
data.putString(KeychainIntentService.UPLOAD_KEY_SERVER, keyserver);
}
}
// Send all information needed to service to sign key in other thread
Intent intent = new Intent(getActivity(), KeychainIntentService.class);
intent.setAction(KeychainIntentService.ACTION_CERTIFY_KEYRING);
intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
if (mPassthroughMessenger != null) {
intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, mPassthroughMessenger);
} else {
// Message is received after signing is done in KeychainIntentService
ServiceProgressHandler saveHandler = new ServiceProgressHandler(
getActivity(),
getString(R.string.progress_certifying),
ProgressDialog.STYLE_SPINNER,
true,
ProgressDialogFragment.ServiceType.KEYCHAIN_INTENT) {
public void handleMessage(Message message) {
// handle messages by standard KeychainIntentServiceHandler first
super.handleMessage(message);
if (message.arg1 == MessageStatus.OKAY.ordinal()) {
Bundle data = message.getData();
CertifyResult result = data.getParcelable(CertifyResult.EXTRA_RESULT);
Intent intent = new Intent();
intent.putExtra(CertifyResult.EXTRA_RESULT, result);
getActivity().setResult(Activity.RESULT_OK, intent);
getActivity().finish();
}
}
};
// 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);
if (mPassthroughMessenger != null) {
getActivity().setResult(Activity.RESULT_OK);
getActivity().finish();
}
}
}
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