239 lines
8.2 KiB
Java
239 lines
8.2 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.io.OutputStream;
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import java.util.ArrayList;
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import android.app.Activity;
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import android.content.ClipData;
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import android.content.ClipboardManager;
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import android.content.Context;
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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.annotation.Nullable;
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import android.support.v4.app.FragmentManager;
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import android.support.v4.app.FragmentTransaction;
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import android.widget.Toast;
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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.PgpHelper;
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import org.sufficientlysecure.keychain.provider.TemporaryFileProvider;
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import org.sufficientlysecure.keychain.ui.base.BaseActivity;
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public class DecryptActivity extends BaseActivity {
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public static final String APPLICATION_AUTOCRYPT_SETUP = "application/autocrypt-setup";
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/* Intents */
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public static final String ACTION_DECRYPT_FROM_CLIPBOARD = "DECRYPT_DATA_CLIPBOARD";
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public static final String EXTRA_CLIPDATA = "DECRYPT_DATA_CLIPBOARD_DATA";
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setFullScreenDialogClose(Activity.RESULT_CANCELED, false);
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// Handle intent actions
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handleActions(savedInstanceState, getIntent());
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}
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@Override
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protected void initLayout() {
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setContentView(R.layout.decrypt_files_activity);
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}
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/**
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* Handles all actions with this intent
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*/
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private void handleActions(Bundle savedInstanceState, Intent intent) {
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// No need to initialize fragments if we are just being restored
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if (savedInstanceState != null) {
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return;
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}
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ArrayList<Uri> uris = new ArrayList<>();
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String action = intent.getAction();
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if (action == null) {
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Toast.makeText(this, "Error: No action specified!", Toast.LENGTH_LONG).show();
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setResult(Activity.RESULT_CANCELED);
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finish();
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return;
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}
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// depending on the data source, we may or may not be able to delete the original file
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boolean canDelete = false;
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boolean isAutocryptSetup = false;
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try {
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switch (action) {
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case Intent.ACTION_SEND: {
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// When sending to Keychain Decrypt via share menu
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// Binary via content provider (could also be files)
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// override uri to get stream from send
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if (intent.hasExtra(Intent.EXTRA_STREAM)) {
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uris.add(intent.getParcelableExtra(Intent.EXTRA_STREAM));
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} else if (intent.hasExtra(Intent.EXTRA_TEXT)) {
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String text = intent.getStringExtra(Intent.EXTRA_TEXT);
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Uri uri = readToTempFile(text);
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if (uri != null) {
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uris.add(uri);
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}
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}
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break;
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}
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case Intent.ACTION_SEND_MULTIPLE: {
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if (intent.hasExtra(Intent.EXTRA_STREAM)) {
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uris = intent.getParcelableArrayListExtra(Intent.EXTRA_STREAM);
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} else if (intent.hasExtra(Intent.EXTRA_TEXT)) {
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for (String text : intent.getStringArrayListExtra(Intent.EXTRA_TEXT)) {
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Uri uri = readToTempFile(text);
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if (uri != null) {
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uris.add(uri);
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}
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}
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}
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break;
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}
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case ACTION_DECRYPT_FROM_CLIPBOARD: {
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ClipData clip = null;
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if (intent.hasExtra(EXTRA_CLIPDATA)) {
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clip = intent.getParcelableExtra(EXTRA_CLIPDATA);
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}
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if (clip == null) {
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break;
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}
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// check if data is available as uri
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Uri uri = null;
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for (int i = 0; i < clip.getItemCount(); i++) {
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ClipData.Item item = clip.getItemAt(i);
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Uri itemUri = item.getUri();
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if (itemUri != null) {
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uri = itemUri;
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break;
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}
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}
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// otherwise, coerce to text (almost always possible) and work from there
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if (uri == null) {
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String text = clip.getItemAt(0).coerceToText(this).toString();
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uri = readToTempFile(text);
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}
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if (uri != null) {
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uris.add(uri);
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}
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break;
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}
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// for everything else, just work on the intent data
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case Intent.ACTION_VIEW:
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canDelete = true;
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case Constants.DECRYPT_DATA:
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default:
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Uri uri = intent.getData();
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isAutocryptSetup = APPLICATION_AUTOCRYPT_SETUP.equalsIgnoreCase(intent.getType());
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if (uri != null) {
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if ("com.android.email.attachmentprovider".equals(uri.getHost())) {
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Toast.makeText(this, R.string.error_reading_aosp, Toast.LENGTH_LONG).show();
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finish();
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return;
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}
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uris.add(uri);
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}
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}
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} catch (IOException e) {
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Toast.makeText(this, R.string.error_reading_text, Toast.LENGTH_LONG).show();
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finish();
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return;
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}
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// Definitely need a data uri with the decrypt_data intent
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if (uris.isEmpty()) {
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Toast.makeText(this, "No data to decrypt!", Toast.LENGTH_LONG).show();
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setResult(Activity.RESULT_CANCELED);
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finish();
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return;
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}
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displayListFragment(uris, canDelete, isAutocryptSetup);
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}
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@Nullable
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public Uri readToTempFile(String text) throws IOException {
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Uri tempFile = TemporaryFileProvider.createFile(this);
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OutputStream outStream = getContentResolver().openOutputStream(tempFile);
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if (outStream == null) {
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return null;
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}
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// clean up ascii armored message, fixing newlines and stuff
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String cleanedText = PgpHelper.getPgpMessageContent(text);
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if (cleanedText == null) {
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return null;
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}
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// if cleanup didn't work, just try the raw data
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outStream.write(cleanedText.getBytes());
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outStream.close();
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return tempFile;
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}
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public void displayListFragment(ArrayList<Uri> inputUris, boolean canDelete, boolean isAutocryptSetup) {
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DecryptListFragment frag = DecryptListFragment.newInstance(inputUris, canDelete, isAutocryptSetup);
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FragmentManager fragMan = getSupportFragmentManager();
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FragmentTransaction trans = fragMan.beginTransaction();
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trans.replace(R.id.decrypt_files_fragment_container, frag);
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// if there already is a fragment, allow going back to that. otherwise, we're top level!
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if (fragMan.getFragments() != null && !fragMan.getFragments().isEmpty()) {
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trans.addToBackStack("list");
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}
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trans.commit();
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}
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}
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