438 lines
19 KiB
Java
438 lines
19 KiB
Java
/*
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* Copyright (C) 2017 Schürmann & Breitmoser GbR
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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 java.io.IOException;
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import java.util.ArrayList;
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import java.util.List;
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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.nfc.NfcAdapter;
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import android.os.Bundle;
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import android.support.annotation.NonNull;
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import android.support.v4.app.Fragment;
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import android.support.v4.app.FragmentManager;
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import android.text.TextUtils;
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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.compatibility.ClipboardReflection;
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import org.sufficientlysecure.keychain.keyimport.FacebookKeyserverClient;
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import org.sufficientlysecure.keychain.keyimport.HkpKeyserverAddress;
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import org.sufficientlysecure.keychain.keyimport.ImportKeysListEntry;
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import org.sufficientlysecure.keychain.keyimport.ParcelableKeyRing;
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import org.sufficientlysecure.keychain.keyimport.processing.ImportKeysListener;
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import org.sufficientlysecure.keychain.keyimport.processing.ImportKeysOperationCallback;
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import org.sufficientlysecure.keychain.keyimport.processing.LoaderState;
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import org.sufficientlysecure.keychain.operations.ImportOperation;
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import org.sufficientlysecure.keychain.operations.results.ImportKeyResult;
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import org.sufficientlysecure.keychain.pgp.PgpHelper;
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import org.sufficientlysecure.keychain.service.ImportKeyringParcel;
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import org.sufficientlysecure.keychain.ui.base.BaseActivity;
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import org.sufficientlysecure.keychain.ui.base.CryptoOperationHelper;
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import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
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import org.sufficientlysecure.keychain.ui.util.Notify;
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import org.sufficientlysecure.keychain.ui.util.Notify.Style;
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import org.sufficientlysecure.keychain.util.ParcelableFileCache;
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import org.sufficientlysecure.keychain.util.Preferences;
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import timber.log.Timber;
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public class ImportKeysActivity extends BaseActivity implements ImportKeysListener {
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public static final String ACTION_IMPORT_KEY = Constants.IMPORT_KEY;
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public static final String ACTION_IMPORT_KEY_FROM_KEYSERVER = Constants.IMPORT_KEY_FROM_KEYSERVER;
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public static final String ACTION_IMPORT_KEY_FROM_FACEBOOK
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= Constants.INTENT_PREFIX + "IMPORT_KEY_FROM_FACEBOOK";
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public static final String ACTION_IMPORT_KEY_FROM_WEB_KEY_DIRECTORY
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= Constants.INTENT_PREFIX + "ACTION_IMPORT_KEY_FROM_WEB_KEY_DIRECTORY";
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public static final String ACTION_IMPORT_KEY_FROM_KEYSERVER_AND_RETURN_RESULT =
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Constants.INTENT_PREFIX + "IMPORT_KEY_FROM_KEY_SERVER_AND_RETURN_RESULT";
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public static final String ACTION_IMPORT_KEY_FROM_FILE_AND_RETURN = Constants.INTENT_PREFIX
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+ "IMPORT_KEY_FROM_FILE_AND_RETURN";
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// Actions for internal use only:
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public static final String ACTION_IMPORT_KEY_FROM_FILE = Constants.INTENT_PREFIX
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+ "IMPORT_KEY_FROM_FILE";
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public static final String ACTION_SEARCH_KEYSERVER_FROM_URL = Constants.INTENT_PREFIX
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+ "SEARCH_KEYSERVER_FROM_URL";
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public static final String ACTION_IMPORT_KEY_FROM_CLIPBOARD = Constants.INTENT_PREFIX
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+ "IMPORT_KEY_FROM_CLIPBOARD";
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public static final String EXTRA_RESULT = "result";
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// only used by ACTION_IMPORT_KEY
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public static final String EXTRA_KEY_BYTES = Constants.IMPORT_EXTRA_KEY_EXTRA_KEY_BYTES;
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// only used by ACTION_IMPORT_KEY_FROM_KEYSERVER
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public static final String EXTRA_QUERY = Constants.IMPORT_KEY_FROM_KEYSERVER_EXTRA_QUERY;
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public static final String EXTRA_KEY_ID = Constants.EXTRA_PREFIX + "EXTRA_KEY_ID";
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public static final String EXTRA_FINGERPRINT = Constants.IMPORT_KEY_FROM_KEYSERVER_EXTRA_FINGERPRINT;
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public static final String TAG_FRAG_LIST = "frag_list";
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public static final String TAG_FRAG_TOP = "frag_top";
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private boolean mFreshIntent;
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private CryptoOperationHelper<ImportKeyringParcel, ImportKeyResult> mOpHelper;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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// we're started with a new Intent that needs to be handled by onResumeFragments
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mFreshIntent = true;
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setFullScreenDialogClose(Activity.RESULT_CANCELED, true);
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}
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@Override
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protected void initLayout() {
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setContentView(R.layout.import_keys_activity);
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}
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@Override
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protected void onResumeFragments() {
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super.onResumeFragments();
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if (mFreshIntent) {
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handleActions(getIntent());
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// we've consumed this Intent, we don't want to repeat the action it represents
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// every time the activity is resumed
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mFreshIntent = false;
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}
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}
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protected void handleActions(@NonNull Intent intent) {
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String action = intent.getAction();
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Bundle extras = intent.getExtras();
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Uri dataUri = intent.getData();
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String scheme = intent.getScheme();
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if (extras == null) {
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extras = new Bundle();
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}
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if (Intent.ACTION_VIEW.equals(action)) {
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if (FacebookKeyserverClient.isFacebookHost(dataUri)) {
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action = ACTION_IMPORT_KEY_FROM_FACEBOOK;
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} else if ("https".equalsIgnoreCase(scheme) && dataUri.getPath().startsWith("/.well-known/openpgpkey/hu/")) {
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action = ACTION_IMPORT_KEY_FROM_WEB_KEY_DIRECTORY;
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} else if ("http".equalsIgnoreCase(scheme) || "https".equalsIgnoreCase(scheme)) {
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action = ACTION_SEARCH_KEYSERVER_FROM_URL;
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} else if (Constants.FINGERPRINT_SCHEME.equalsIgnoreCase(scheme)) {
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action = ACTION_IMPORT_KEY_FROM_KEYSERVER;
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extras.putString(EXTRA_FINGERPRINT, dataUri.getSchemeSpecificPart());
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} else {
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// Android's Action when opening file associated to Keychain (see AndroidManifest.xml)
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// delegate action to ACTION_IMPORT_KEY
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action = ACTION_IMPORT_KEY;
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}
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} else if (Intent.ACTION_SEND.equals(action)) {
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action = ACTION_IMPORT_KEY;
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} else if (NfcAdapter.ACTION_NDEF_DISCOVERED.equals(action) && Constants.FINGERPRINT_SCHEME.equalsIgnoreCase(scheme)) {
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action = ACTION_IMPORT_KEY_FROM_KEYSERVER;
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extras.putString(EXTRA_FINGERPRINT, dataUri.getSchemeSpecificPart());
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}
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if (action == null) {
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// -> switch to default below
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action = "";
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}
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switch (action) {
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case ACTION_IMPORT_KEY: {
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if (dataUri != null) {
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// action: directly load data
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startListFragment(null, dataUri, null, null);
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} else if (extras.containsKey(EXTRA_KEY_BYTES)) {
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byte[] importData = extras.getByteArray(EXTRA_KEY_BYTES);
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// action: directly load data
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startListFragment(importData, null, null, null);
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} else if (extras.containsKey(Intent.EXTRA_STREAM)) {
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startListFragment(null, extras.getParcelable(Intent.EXTRA_STREAM), null, null);
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} else {
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startTopFileFragment();
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startListFragment(null, null, null, null);
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}
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break;
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}
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case ACTION_IMPORT_KEY_FROM_KEYSERVER:
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case ACTION_IMPORT_KEY_FROM_KEYSERVER_AND_RETURN_RESULT: {
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if (extras.containsKey(EXTRA_QUERY) || extras.containsKey(EXTRA_KEY_ID)) {
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/* simple search based on query or key id */
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String query = null;
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if (extras.containsKey(EXTRA_QUERY)) {
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query = extras.getString(EXTRA_QUERY);
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} else if (extras.containsKey(EXTRA_KEY_ID)) {
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long keyId = extras.getLong(EXTRA_KEY_ID, 0);
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if (keyId != 0) {
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query = KeyFormattingUtils.convertKeyIdToHex(keyId);
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}
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}
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if (query != null && query.length() > 0) {
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// display keyserver fragment with query
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startTopCloudFragment(query, null);
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// action: search immediately
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startListFragment(null, null, query, null);
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} else {
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Timber.e("Query is empty!");
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return;
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}
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} else if (extras.containsKey(EXTRA_FINGERPRINT)) {
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/*
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* search based on fingerprint, here we can enforce a check in the end
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* if the right key has been downloaded
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*/
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String fingerprint = extras.getString(EXTRA_FINGERPRINT);
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if (isFingerprintValid(fingerprint)) {
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String query = "0x" + fingerprint;
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// action: search immediately
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startListFragment(null, null, query, null);
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}
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} else {
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Timber.e("IMPORT_KEY_FROM_KEYSERVER action needs to contain the 'query', 'key_id', or " +
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"'fingerprint' extra!");
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return;
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}
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break;
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}
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case ACTION_IMPORT_KEY_FROM_FACEBOOK: {
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String fbUsername = FacebookKeyserverClient.getUsernameFromUri(dataUri);
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Preferences.CloudSearchPrefs cloudSearchPrefs =
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Preferences.CloudSearchPrefs.createSocialOnly();
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// search immediately
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startListFragment(null, null, fbUsername, cloudSearchPrefs);
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break;
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}
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case ACTION_IMPORT_KEY_FROM_WEB_KEY_DIRECTORY: {
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Preferences.CloudSearchPrefs cloudSearchPrefs =
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Preferences.CloudSearchPrefs.createWebKeyDirectoryOnly();
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// search immediately
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startListFragment(null, null, dataUri.toString(), cloudSearchPrefs);
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break;
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}
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case ACTION_SEARCH_KEYSERVER_FROM_URL: {
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// get keyserver from URL
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HkpKeyserverAddress keyserver = HkpKeyserverAddress.createFromUri(
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dataUri.getScheme() + "://" + dataUri.getAuthority());
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Preferences.CloudSearchPrefs cloudSearchPrefs = Preferences.CloudSearchPrefs.createKeyserverOnly(keyserver);
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Timber.d("Using keyserver: " + keyserver);
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// process URL to get operation and query
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String operation = dataUri.getQueryParameter("op");
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String query = dataUri.getQueryParameter("search");
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// if query or operation not specified, we still allow users to search
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if (query == null || operation == null) {
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startTopCloudFragment(null, cloudSearchPrefs);
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startListFragment(null, null, null, cloudSearchPrefs);
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} else {
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if (operation.equalsIgnoreCase("get")) {
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// don't allow searching here, only one key!
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startListFragment(null, null, query, cloudSearchPrefs);
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} else { // for example: operation: index
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startTopCloudFragment(query, cloudSearchPrefs);
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startListFragment(null, null, query, cloudSearchPrefs);
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}
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}
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break;
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}
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case ACTION_IMPORT_KEY_FROM_FILE:
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case ACTION_IMPORT_KEY_FROM_FILE_AND_RETURN: {
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// NOTE: this only displays the appropriate fragment, no actions are taken
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startTopFileFragment();
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startListFragment(null, null, null, null);
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break;
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}
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case ACTION_IMPORT_KEY_FROM_CLIPBOARD: {
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startListFragmentFromClipboard();
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break;
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}
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default: {
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startTopCloudFragment(null, null);
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startListFragment(null, null, null, null);
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break;
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}
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}
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}
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private void startListFragmentFromClipboard() {
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CharSequence clipboardText = ClipboardReflection.getClipboardText(this);
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if (TextUtils.isEmpty(clipboardText)) {
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Notify.create(this, R.string.error_clipboard_empty, Style.ERROR).show();
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return;
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}
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String keyText = PgpHelper.getPgpPublicKeyContent(clipboardText);
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if (keyText == null) {
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Notify.create(this, R.string.error_clipboard_bad, Style.ERROR).show();
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return;
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}
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startListFragment(keyText.getBytes(), null, null, null);
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}
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/**
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* Shows the list of keys to be imported.
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* If the fragment is started with non-null bytes/dataUri/serverQuery, it will immediately
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* load content.
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*
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* @param bytes bytes containing list of keyrings to import
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* @param dataUri uri to file to import keyrings from
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* @param serverQuery query to search for on the keyserver
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* @param cloudSearchPrefs search specifications to use. If null will retrieve from user's
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* preferences.
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*/
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private void startListFragment(byte[] bytes, Uri dataUri, String serverQuery,
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Preferences.CloudSearchPrefs cloudSearchPrefs) {
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Fragment listFragment =
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ImportKeysListFragment.newInstance(bytes, dataUri, serverQuery, false,
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cloudSearchPrefs);
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getSupportFragmentManager().beginTransaction()
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.replace(R.id.import_keys_list_container, listFragment, TAG_FRAG_LIST)
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.commit();
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}
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private void startTopFileFragment() {
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FragmentManager fM = getSupportFragmentManager();
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if (fM.findFragmentByTag(TAG_FRAG_TOP) == null) {
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Fragment importFileFragment = ImportKeysFileFragment.newInstance();
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fM.beginTransaction().add(importFileFragment, TAG_FRAG_TOP).commit();
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}
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}
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/**
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* loads the CloudFragment, which enables the search bar
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*
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* @param query search query
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* @param cloudSearchPrefs keyserver authority to use for search, if null will use keyserver
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* specified in user preferences
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*/
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private void startTopCloudFragment(String query,
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Preferences.CloudSearchPrefs cloudSearchPrefs) {
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FragmentManager fM = getSupportFragmentManager();
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if (fM.findFragmentByTag(TAG_FRAG_TOP) == null) {
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Fragment importCloudFragment = ImportKeysSearchFragment.newInstance(query,
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cloudSearchPrefs);
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fM.beginTransaction().add(importCloudFragment, TAG_FRAG_TOP).commit();
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}
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}
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private boolean isFingerprintValid(String fingerprint) {
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if (fingerprint == null || fingerprint.length() < 40) {
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Notify.create(this, R.string.import_qr_code_too_short_fingerprint, Notify.Style.ERROR)
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.show(findViewById(R.id.import_snackbar));
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return false;
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} else {
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return true;
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}
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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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if (mOpHelper != null &&
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mOpHelper.handleActivityResult(requestCode, resultCode, data)) {
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return;
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}
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super.onActivityResult(requestCode, resultCode, data);
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}
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@Override
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public void onBackPressed() {
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FragmentManager fM = getSupportFragmentManager();
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ImportKeysListFragment listFragment =
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(ImportKeysListFragment) fM.findFragmentByTag(TAG_FRAG_LIST);
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if ((listFragment == null) || listFragment.onBackPressed()) {
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super.onBackPressed();
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}
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}
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@Override
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public void loadKeys(LoaderState loaderState) {
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FragmentManager fM = getSupportFragmentManager();
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((ImportKeysListFragment) fM.findFragmentByTag(TAG_FRAG_LIST)).loadState(loaderState);
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}
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@Override
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public void importKeys(List<ImportKeysListEntry> entries) {
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List<ParcelableKeyRing> keyRings = new ArrayList<>();
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for (ImportKeysListEntry e : entries) {
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keyRings.add(e.getParcelableKeyRing());
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}
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// instead of giving the entries by Intent extra, cache them into a
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// file to prevent Java Binder problems on heavy imports
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// read FileImportCache for more info.
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try {
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// We parcel this iteratively into a file - anything we can
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// display here, we should be able to import.
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ParcelableFileCache<ParcelableKeyRing> cache =
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new ParcelableFileCache<>(this, ImportOperation.CACHE_FILE_NAME);
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cache.writeCache(entries.size(), keyRings.iterator());
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} catch (IOException e) {
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Timber.e(e, "Problem writing cache file");
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Notify.create(this, "Problem writing cache file!", Notify.Style.ERROR).show();
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return;
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}
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ImportKeyringParcel inputParcel = ImportKeyringParcel.createImportKeyringParcel(null, null);
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ImportKeysOperationCallback callback = new ImportKeysOperationCallback(this, inputParcel, null);
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mOpHelper = new CryptoOperationHelper<>(1, this, callback, R.string.progress_importing);
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mOpHelper.cryptoOperation();
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}
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@Override
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public void handleResult(ImportKeyResult result, Integer position) {
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String intentAction = getIntent().getAction();
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if (ImportKeysActivity.ACTION_IMPORT_KEY_FROM_KEYSERVER_AND_RETURN_RESULT.equals(intentAction)
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|| ImportKeysActivity.ACTION_IMPORT_KEY_FROM_FILE_AND_RETURN.equals(intentAction)) {
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Intent intent = new Intent();
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intent.putExtra(ImportKeyResult.EXTRA_RESULT, result);
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setResult(Activity.RESULT_OK, intent);
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finish();
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} else if (result.isOkNew() || result.isOkUpdated()) {
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if (ACTION_IMPORT_KEY_FROM_CLIPBOARD.equals(intentAction)) {
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ClipboardReflection.clearClipboard(getApplicationContext());
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}
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// User has successfully imported a key, hide first time dialog
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Preferences.getPreferences(this).setFirstTime(false);
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// Close activities opened for importing keys and go to the list of keys
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Intent intent = new Intent(this, MainActivity.class);
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intent.putExtra(ImportKeyResult.EXTRA_RESULT, result);
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intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
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startActivity(intent);
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} else {
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result.createNotify(this).show();
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}
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}
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}
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