summaryrefslogtreecommitdiff
path: root/app/src/main/java/se/leap/bitmaskclient/MainActivity.java
blob: 39c4a8f1af800916aedfd3336ba42d42a8fe7675 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
/**
 * Copyright (c) 2018 LEAP Encryption Access Project and contributers
 *
 * 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 se.leap.bitmaskclient;


import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.annotation.StringRes;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;

import org.json.JSONException;
import org.json.JSONObject;

import java.util.Observable;
import java.util.Observer;

import se.leap.bitmaskclient.drawer.NavigationDrawerFragment;
import se.leap.bitmaskclient.eip.EIP;
import se.leap.bitmaskclient.eip.EipCommand;
import se.leap.bitmaskclient.fragments.ExcludeAppsFragment;
import se.leap.bitmaskclient.fragments.LogFragment;
import se.leap.bitmaskclient.utils.PreferenceHelper;

import static se.leap.bitmaskclient.Constants.ASK_TO_CANCEL_VPN;
import static se.leap.bitmaskclient.Constants.BROADCAST_RESULT_CODE;
import static se.leap.bitmaskclient.Constants.BROADCAST_RESULT_KEY;
import static se.leap.bitmaskclient.Constants.EIP_ACTION_PREPARE_VPN;
import static se.leap.bitmaskclient.Constants.EIP_ACTION_START;
import static se.leap.bitmaskclient.Constants.EIP_REQUEST;
import static se.leap.bitmaskclient.Constants.PROVIDER_KEY;
import static se.leap.bitmaskclient.Constants.REQUEST_CODE_CONFIGURE_LEAP;
import static se.leap.bitmaskclient.Constants.REQUEST_CODE_LOG_IN;
import static se.leap.bitmaskclient.Constants.REQUEST_CODE_SWITCH_PROVIDER;
import static se.leap.bitmaskclient.Constants.SHARED_PREFERENCES;
import static se.leap.bitmaskclient.ProviderAPI.ERRORID;
import static se.leap.bitmaskclient.ProviderAPI.ERRORS;
import static se.leap.bitmaskclient.ProviderAPI.INCORRECTLY_DOWNLOADED_EIP_SERVICE;
import static se.leap.bitmaskclient.ProviderAPI.INCORRECTLY_UPDATED_INVALID_VPN_CERTIFICATE;
import static se.leap.bitmaskclient.ProviderAPI.USER_MESSAGE;
import static se.leap.bitmaskclient.R.string.downloading_vpn_certificate_failed;
import static se.leap.bitmaskclient.R.string.vpn_certificate_user_message;
import static se.leap.bitmaskclient.eip.EIP.EIPErrors.ERROR_INVALID_VPN_CERTIFICATE;
import static se.leap.bitmaskclient.eip.EIP.EIPErrors.ERROR_VPN_PREPARE;
import static se.leap.bitmaskclient.utils.PreferenceHelper.storeProviderInPreferences;


public class MainActivity extends AppCompatActivity implements EipSetupListener, Observer, ExcludeAppsFragment.ExcludedAppsCallback {

    public final static String TAG = MainActivity.class.getSimpleName();

    private Provider provider;
    private SharedPreferences preferences;
    private NavigationDrawerFragment navigationDrawerFragment;

    public final static String ACTION_SHOW_VPN_FRAGMENT = "action_show_vpn_fragment";
    public final static String ACTION_SHOW_LOG_FRAGMENT = "action_show_log_fragment";

    /**
     * Fragment managing the behaviors, interactions and presentation of the navigation drawer.
     */

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.a_main);
        setSupportActionBar(findViewById(R.id.toolbar));

        navigationDrawerFragment = (NavigationDrawerFragment)
                getSupportFragmentManager().findFragmentById(R.id.navigation_drawer);

        preferences = getSharedPreferences(SHARED_PREFERENCES, MODE_PRIVATE);
        provider = ProviderObservable.getInstance().getCurrentProvider();

        EipSetupObserver.addListener(this);
        // Set up the drawer.
        navigationDrawerFragment.setUp(R.id.navigation_drawer, findViewById(R.id.drawer_layout));
        handleIntentAction(getIntent());
    }

    @Override
    public void onBackPressed() {
        FragmentManagerEnhanced fragmentManagerEnhanced = new FragmentManagerEnhanced(getSupportFragmentManager());
        Fragment fragment = fragmentManagerEnhanced.findFragmentByTag(MainActivity.TAG);
        if (fragment == null || !(fragment instanceof EipFragment)) {
            Fragment eipFragment = new EipFragment();
            Bundle bundle = new Bundle();
            bundle.putParcelable(PROVIDER_KEY, provider);
            eipFragment.setArguments(bundle);
            fragmentManagerEnhanced.replace(R.id.main_container, eipFragment, MainActivity.TAG);
            hideActionBarSubTitle();
        } else {
            super.onBackPressed();
        }
    }

    @Override
    protected void onNewIntent(Intent intent) {
        super.onNewIntent(intent);
        setIntent(intent);
        handleIntentAction(intent);
    }

    private void handleIntentAction(Intent intent) {
        if (intent == null || intent.getAction() == null) {
            return;
        }

        Fragment fragment = null;
        switch (intent.getAction()) {
            case ACTION_SHOW_VPN_FRAGMENT:
                fragment = new EipFragment();
                Bundle bundle = new Bundle();
                if (intent.hasExtra(ASK_TO_CANCEL_VPN)) {
                    bundle.putBoolean(ASK_TO_CANCEL_VPN, true);
                }
                bundle.putParcelable(PROVIDER_KEY, provider);
                fragment.setArguments(bundle);
                hideActionBarSubTitle();
                break;
            case ACTION_SHOW_LOG_FRAGMENT:
                fragment = new LogFragment();
                setActionBarTitle(R.string.log_fragment_title);
                break;
            default:
                break;
        }
        // on layout change / recreation of the activity, we don't want create new Fragments
        // instead the fragments themselves care about recreation and state restoration
        intent.setAction(null);

        if (fragment != null) {
            new FragmentManagerEnhanced(getSupportFragmentManager())
                    .replace(R.id.main_container, fragment, MainActivity.TAG);
        }
    }

    private void hideActionBarSubTitle() {
        ActionBar actionBar = getSupportActionBar();
        if (actionBar != null) {
            actionBar.setSubtitle(null);
        }
    }
    private void setActionBarTitle(@StringRes int stringId) {
        ActionBar actionBar = getSupportActionBar();
        if (actionBar != null) {
            actionBar.setSubtitle(stringId);
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (data == null) {
            return;
        }

        if (resultCode == RESULT_OK && data.hasExtra(Provider.KEY)) {
            provider = data.getParcelableExtra(Provider.KEY);

            if (provider == null) {
                return;
            }

            storeProviderInPreferences(preferences, provider);
            ProviderObservable.getInstance().updateProvider(provider);
            if (!provider.supportsPluggableTransports()) {
                PreferenceHelper.usePluggableTransports(this, false);
            }
            navigationDrawerFragment.refresh();

            switch (requestCode) {
                case REQUEST_CODE_SWITCH_PROVIDER:
                    EipCommand.stopVPN(this.getApplicationContext());
                    break;
                case REQUEST_CODE_CONFIGURE_LEAP:
                    Log.d(TAG, "REQUEST_CODE_CONFIGURE_LEAP - onActivityResult - MainActivity");
                    break;
                case REQUEST_CODE_LOG_IN:
                    EipCommand.startVPN(this.getApplicationContext(), true);
                    break;
            }
        }

        // on switch provider we need to set the EIP fragment
        Fragment fragment = new EipFragment();
        Bundle arguments = new Bundle();
        arguments.putParcelable(PROVIDER_KEY, provider);
        fragment.setArguments(arguments);
        new FragmentManagerEnhanced(getSupportFragmentManager())
                .replace(R.id.main_container, fragment, EipFragment.TAG);
        hideActionBarSubTitle();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        EipSetupObserver.removeListener(this);
    }

    @Override
    public void handleEipEvent(Intent intent) {
        int resultCode = intent.getIntExtra(BROADCAST_RESULT_CODE, RESULT_CANCELED);
        Bundle resultData = intent.getParcelableExtra(BROADCAST_RESULT_KEY);
        if (resultData == null) {
            resultData = Bundle.EMPTY;
        }
        String request = resultData.getString(EIP_REQUEST);

        if (request == null) {
            return;
        }

        switch (request) {
            case EIP_ACTION_START:
                if (resultCode == RESULT_CANCELED) {
                    String error = resultData.getString(ERRORS);
                    if (isInternalErrorHandling(error)) {
                        return;
                    }

                    if (LeapSRPSession.loggedIn() || provider.allowsAnonymous()) {
                        showMainActivityErrorDialog(error);
                    } else if (isInvalidCertificateForLoginOnlyProvider(error)) {
                        askUserToLogIn(getString(vpn_certificate_user_message));
                    }
                }
                break;
            case EIP_ACTION_PREPARE_VPN:
                if (resultCode == RESULT_CANCELED) {
                    showMainActivityErrorDialog(getString(R.string.vpn_error_establish), ERROR_VPN_PREPARE);
                }
                break;
        }
    }

    @Override
    public void handleProviderApiEvent(Intent intent) {
        int resultCode = intent.getIntExtra(BROADCAST_RESULT_CODE, RESULT_CANCELED);

        switch (resultCode) {
            case INCORRECTLY_DOWNLOADED_EIP_SERVICE:
                // TODO CATCH ME IF YOU CAN - WHAT DO WE WANT TO DO?
                break;
            case INCORRECTLY_UPDATED_INVALID_VPN_CERTIFICATE:
                if (LeapSRPSession.loggedIn() || provider.allowsAnonymous()) {
                    showMainActivityErrorDialog(getString(downloading_vpn_certificate_failed));
                } else {
                    askUserToLogIn(getString(vpn_certificate_user_message));
                }
                break;
        }
    }

    @Override
    public void update(Observable o, Object arg) {
        if (o instanceof ProviderObservable) {
            this.provider = ((ProviderObservable) o).getCurrentProvider();
        }
    }

    /**
     * Shows an error dialog
     */
    public void showMainActivityErrorDialog(String reasonToFail) {
        try {

            FragmentTransaction fragmentTransaction = new FragmentManagerEnhanced(
                    this.getSupportFragmentManager()).removePreviousFragment(
                            MainActivityErrorDialog.TAG);
            DialogFragment newFragment;
            try {
                JSONObject errorJson = new JSONObject(reasonToFail);
                newFragment = MainActivityErrorDialog.newInstance(provider, errorJson);
            } catch (JSONException e) {
                e.printStackTrace();
                newFragment = MainActivityErrorDialog.newInstance(provider, reasonToFail);
            }
            newFragment.show(fragmentTransaction, MainActivityErrorDialog.TAG);
        } catch (IllegalStateException | NullPointerException e) {
            e.printStackTrace();
            Log.w(TAG, "error dialog leaked!");
        }
    }

    /**
     * Shows an error dialog
     */
    public void showMainActivityErrorDialog(String reasonToFail, EIP.EIPErrors error) {
        try {
            FragmentTransaction fragmentTransaction = new FragmentManagerEnhanced(
                    this.getSupportFragmentManager()).removePreviousFragment(
                    MainActivityErrorDialog.TAG);
            DialogFragment newFragment = MainActivityErrorDialog.newInstance(provider, reasonToFail, error);
            newFragment.show(fragmentTransaction, MainActivityErrorDialog.TAG);
        } catch (IllegalStateException | NullPointerException e) {
            e.printStackTrace();
            Log.w(TAG, "error dialog leaked!");
        }
    }

    /**
     *
     * @param errorJsonString
     * @return true if errorJson is a valid json and contains only ERRORID but
     * not an ERRORS field containing an error message
     */
    public boolean isInternalErrorHandling(String errorJsonString) {
        try {
            JSONObject errorJson = new JSONObject(errorJsonString);
            return !errorJson.has(ERRORS) && errorJson.has(ERRORID);
        } catch (JSONException | NullPointerException e) {
            e.printStackTrace();
        }
        return false;
    }

    public boolean isInvalidCertificateForLoginOnlyProvider(String errorJsonString) {
        try {
            JSONObject errorJson = new JSONObject(errorJsonString);
            return  ERROR_INVALID_VPN_CERTIFICATE.toString().equals(errorJson.getString(ERRORID)) &&
                    !LeapSRPSession.loggedIn() &&
                    !provider.allowsAnonymous();
        } catch (JSONException e) {
            e.printStackTrace();
        }
        return false;
    }

    private void askUserToLogIn(String userMessage) {
        Intent intent = new Intent(this, LoginActivity.class);
        intent.putExtra(PROVIDER_KEY, provider);
        if (userMessage != null) {
            intent.putExtra(USER_MESSAGE, userMessage);
        }
        startActivityForResult(intent, REQUEST_CODE_LOG_IN);
    }


    @Override
    public void onAppsExcluded(int number) {
        navigationDrawerFragment.onAppsExcluded(number);
    }
}