separate packages for the different aspects of the application
[mobile-ledger.git] / app / src / main / java / net / ktnx / mobileledger / utils / NetworkUtil.java
1 /*
2  * Copyright © 2018 Damyan Ivanov.
3  * This file is part of Mobile-Ledger.
4  * Mobile-Ledger is free software: you can distribute it and/or modify it
5  * under the term of the GNU General Public License as published by
6  * the Free Software Foundation, either version 3 of the License, or
7  * (at your opinion), any later version.
8  *
9  * Mobile-Ledger is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License terms for details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with Mobile-Ledger. If not, see <https://www.gnu.org/licenses/>.
16  */
17
18 package net.ktnx.mobileledger.utils;
19
20 import android.content.SharedPreferences;
21 import android.util.Base64;
22 import android.util.Log;
23
24 import java.io.IOException;
25 import java.net.HttpURLConnection;
26 import java.net.URL;
27
28 public final class NetworkUtil {
29     public static HttpURLConnection prepare_connection(SharedPreferences pref, String path) throws
30             IOException {
31         final String backend_url = pref.getString("backend_url", "");
32         final boolean use_auth = pref.getBoolean("backend_use_http_auth", false);
33         Log.d("network", "Connecting to "+backend_url + "/" + path);
34         HttpURLConnection http = (HttpURLConnection) new URL(backend_url + "/" + path).openConnection();
35         if (use_auth) {
36             final String auth_user = pref.getString("backend_auth_user", "");
37             final String auth_password = pref.getString("backend_auth_password", "");
38             final byte[] bytes = (String.format("%s:%s", auth_user, auth_password)).getBytes("UTF-8");
39             final String value = Base64.encodeToString(bytes, Base64.DEFAULT);
40             http.setRequestProperty("Authorization", "Basic " + value);
41         }
42         http.setAllowUserInteraction(false);
43         http.setRequestProperty("Accept-Charset", "UTF-8");
44         http.setInstanceFollowRedirects(false);
45         http.setUseCaches(false);
46
47         return http;
48     }
49 }