275 lines
10 KiB
Java
275 lines
10 KiB
Java
/*
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* Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.sufficientlysecure.keychain.ui;
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import android.app.Activity;
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import android.content.Intent;
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import android.net.Uri;
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import android.os.Bundle;
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import android.support.v4.app.Fragment;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.CheckBox;
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import android.widget.TextView;
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import android.widget.Button;
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import org.sufficientlysecure.keychain.Constants;
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import org.sufficientlysecure.keychain.R;
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import org.sufficientlysecure.keychain.pgp.exception.PgpGeneralException;
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import org.sufficientlysecure.keychain.provider.CachedPublicKeyRing;
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import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
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import org.sufficientlysecure.keychain.provider.ProviderHelper;
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import org.sufficientlysecure.keychain.util.Log;
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import java.util.Vector;
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public class EncryptAsymmetricFragment extends Fragment {
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public static final String ARG_SIGNATURE_KEY_ID = "signature_key_id";
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public static final String ARG_ENCRYPTION_KEY_IDS = "encryption_key_ids";
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public static final int REQUEST_CODE_PUBLIC_KEYS = 0x00007001;
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public static final int REQUEST_CODE_SECRET_KEYS = 0x00007002;
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ProviderHelper mProviderHelper;
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OnAsymmetricKeySelection mKeySelectionListener;
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// view
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private Button mSelectKeysButton;
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private CheckBox mSign;
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private TextView mMainUserId;
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private TextView mMainUserIdRest;
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// model
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private long mSecretKeyId = Constants.key.none;
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private long mEncryptionKeyIds[] = null;
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// Container Activity must implement this interface
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public interface OnAsymmetricKeySelection {
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public void onSigningKeySelected(long signingKeyId);
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public void onEncryptionKeysSelected(long[] encryptionKeyIds);
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}
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@Override
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public void onAttach(Activity activity) {
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super.onAttach(activity);
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try {
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mKeySelectionListener = (OnAsymmetricKeySelection) activity;
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} catch (ClassCastException e) {
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throw new ClassCastException(activity.toString() + " must implement OnAsymmetricKeySelection");
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}
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}
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private void setSignatureKeyId(long signatureKeyId) {
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mSecretKeyId = signatureKeyId;
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// update key selection in EncryptActivity
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mKeySelectionListener.onSigningKeySelected(signatureKeyId);
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updateView();
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}
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private void setEncryptionKeyIds(long[] encryptionKeyIds) {
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mEncryptionKeyIds = encryptionKeyIds;
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// update key selection in EncryptActivity
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mKeySelectionListener.onEncryptionKeysSelected(encryptionKeyIds);
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updateView();
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}
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/**
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* Inflate the layout for this fragment
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*/
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@Override
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public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
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View view = inflater.inflate(R.layout.encrypt_asymmetric_fragment, container, false);
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mSelectKeysButton = (Button) view.findViewById(R.id.btn_selectEncryptKeys);
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mSign = (CheckBox) view.findViewById(R.id.sign);
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mMainUserId = (TextView) view.findViewById(R.id.mainUserId);
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mMainUserIdRest = (TextView) view.findViewById(R.id.mainUserIdRest);
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mSelectKeysButton.setOnClickListener(new View.OnClickListener() {
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public void onClick(View v) {
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selectPublicKeys();
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}
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});
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mSign.setOnClickListener(new View.OnClickListener() {
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public void onClick(View v) {
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CheckBox checkBox = (CheckBox) v;
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if (checkBox.isChecked()) {
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selectSecretKey();
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} else {
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setSignatureKeyId(Constants.key.none);
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}
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}
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});
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return view;
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}
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@Override
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public void onActivityCreated(Bundle savedInstanceState) {
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super.onActivityCreated(savedInstanceState);
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long signatureKeyId = getArguments().getLong(ARG_SIGNATURE_KEY_ID);
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long[] encryptionKeyIds = getArguments().getLongArray(ARG_ENCRYPTION_KEY_IDS);
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mProviderHelper = new ProviderHelper(getActivity());
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// preselect keys given by arguments (given by Intent to EncryptActivity)
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preselectKeys(signatureKeyId, encryptionKeyIds, mProviderHelper);
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}
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/**
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* If an Intent gives a signatureMasterKeyId and/or encryptionMasterKeyIds, preselect those!
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*
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* @param preselectedSignatureKeyId
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* @param preselectedEncryptionKeyIds
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*/
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private void preselectKeys(long preselectedSignatureKeyId, long[] preselectedEncryptionKeyIds,
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ProviderHelper providerHelper) {
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// TODO all of this works under the assumption that the first suitable subkey is always used!
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// not sure if we need to distinguish between different subkeys here?
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if (preselectedSignatureKeyId != 0) {
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try {
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CachedPublicKeyRing keyring =
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providerHelper.getCachedPublicKeyRing(
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KeyRings.buildUnifiedKeyRingUri(preselectedSignatureKeyId));
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if(keyring.hasAnySecret()) {
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setSignatureKeyId(keyring.getMasterKeyId());
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}
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} catch (PgpGeneralException e) {
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Log.e(Constants.TAG, "key not found!", e);
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}
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}
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if (preselectedEncryptionKeyIds != null) {
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Vector<Long> goodIds = new Vector<Long>();
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for (int i = 0; i < preselectedEncryptionKeyIds.length; ++i) {
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try {
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long id = providerHelper.getCachedPublicKeyRing(
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KeyRings.buildUnifiedKeyRingsFindBySubkeyUri(
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preselectedEncryptionKeyIds[i])
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).getMasterKeyId();
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goodIds.add(id);
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} catch (PgpGeneralException e) {
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Log.e(Constants.TAG, "key not found!", e);
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}
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}
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if (goodIds.size() > 0) {
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long[] keyIds = new long[goodIds.size()];
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for (int i = 0; i < goodIds.size(); ++i) {
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keyIds[i] = goodIds.get(i);
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}
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setEncryptionKeyIds(keyIds);
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}
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}
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}
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private void updateView() {
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if (mEncryptionKeyIds == null || mEncryptionKeyIds.length == 0) {
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mSelectKeysButton.setText(getString(R.string.select_keys_button_default));
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} else {
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mSelectKeysButton.setText(getResources().getQuantityString(
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R.plurals.select_keys_button, mEncryptionKeyIds.length,
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mEncryptionKeyIds.length));
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}
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if (mSecretKeyId == Constants.key.none) {
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mSign.setChecked(false);
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mMainUserId.setText("");
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mMainUserIdRest.setText("");
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} else {
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// See if we can get a user_id from a unified query
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String[] userId;
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try {
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userId = mProviderHelper.getCachedPublicKeyRing(
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KeyRings.buildUnifiedKeyRingUri(mSecretKeyId)).getSplitPrimaryUserId();
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} catch (PgpGeneralException e) {
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userId = null;
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}
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if (userId != null && userId[0] != null) {
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mMainUserId.setText(String.format("%#16x", Long.parseLong(userId[0])));
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} else {
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mMainUserId.setText(getResources().getString(R.string.user_id_no_name));
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}
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if (userId != null && userId[1] != null) {
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mMainUserIdRest.setText(userId[1]);
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} else {
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mMainUserIdRest.setText("");
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}
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mSign.setChecked(true);
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}
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}
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private void selectPublicKeys() {
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Intent intent = new Intent(getActivity(), SelectPublicKeyActivity.class);
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Vector<Long> keyIds = new Vector<Long>();
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if (mEncryptionKeyIds != null && mEncryptionKeyIds.length > 0) {
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for (int i = 0; i < mEncryptionKeyIds.length; ++i) {
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keyIds.add(mEncryptionKeyIds[i]);
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}
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}
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long[] initialKeyIds = null;
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if (keyIds.size() > 0) {
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initialKeyIds = new long[keyIds.size()];
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for (int i = 0; i < keyIds.size(); ++i) {
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initialKeyIds[i] = keyIds.get(i);
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}
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}
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intent.putExtra(SelectPublicKeyActivity.EXTRA_SELECTED_MASTER_KEY_IDS, initialKeyIds);
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startActivityForResult(intent, REQUEST_CODE_PUBLIC_KEYS);
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}
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private void selectSecretKey() {
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Intent intent = new Intent(getActivity(), SelectSecretKeyActivity.class);
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intent.putExtra(SelectSecretKeyActivity.EXTRA_FILTER_SIGN, true);
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startActivityForResult(intent, REQUEST_CODE_SECRET_KEYS);
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}
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@Override
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public void onActivityResult(int requestCode, int resultCode, Intent data) {
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switch (requestCode) {
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case REQUEST_CODE_PUBLIC_KEYS: {
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if (resultCode == Activity.RESULT_OK) {
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Bundle bundle = data.getExtras();
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setEncryptionKeyIds(bundle
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.getLongArray(SelectPublicKeyActivity.RESULT_EXTRA_MASTER_KEY_IDS));
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}
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break;
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}
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case REQUEST_CODE_SECRET_KEYS: {
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if (resultCode == Activity.RESULT_OK) {
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Uri uriMasterKey = data.getData();
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setSignatureKeyId(Long.valueOf(uriMasterKey.getLastPathSegment()));
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} else {
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setSignatureKeyId(Constants.key.none);
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}
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break;
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}
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default: {
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super.onActivityResult(requestCode, resultCode, data);
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break;
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}
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}
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}
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}
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