network helper class

diff --git a/app/src/main/java/net/ktnx/mobileledger/NetworkUtil.java b/app/src/main/java/net/ktnx/mobileledger/NetworkUtil.java
new file mode 100644 (file)
index 0000000..b355b51
--- /dev/null
+++ b/app/src/main/java/net/ktnx/mobileledger/NetworkUtil.java
@@ -0,0 +1,30 @@
+package net.ktnx.mobileledger;
+
+import android.content.SharedPreferences;
+import android.util.Base64;
+import android.util.Log;
+
+import java.io.IOException;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
+final class NetworkUtil {
+    static HttpURLConnection prepare_connection(SharedPreferences pref, String path) throws IOException {
+        final String backend_url = pref.getString("backend_url", "");
+        final boolean use_auth = pref.getBoolean("backend_use_http_auth", false);
+        Log.d("network", "Connecting to "+backend_url + "/" + path);
+        HttpURLConnection http = (HttpURLConnection) new URL(backend_url + "/" + path).openConnection();
+        if (use_auth) {
+            final String auth_user = pref.getString("backend_auth_user", "");
+            final String auth_password = pref.getString("backend_auth_password", "");
+            final byte[] bytes = (String.format("%s:%s", auth_user, auth_password)).getBytes("UTF-8");
+            final String value = Base64.encodeToString(bytes, Base64.DEFAULT);
+            http.setRequestProperty("Authorization", "Basic " + value);
+        }
+        http.setAllowUserInteraction(false);
+        http.setInstanceFollowRedirects(false);
+        http.setUseCaches(false);
+
+        return http;
+    }
+}