From 778128e94fc3f6601986b5943122e499a318b8cd Mon Sep 17 00:00:00 2001
From: cyBerta <cyberta@riseup.net>
Date: Mon, 30 May 2022 23:43:58 +0200
Subject: implement ObfsVpnClient, wrapping go jni bindings

---
 .../pluggableTransports/ObfsVpnClient.java         | 68 ++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 app/src/main/java/se/leap/bitmaskclient/pluggableTransports/ObfsVpnClient.java

(limited to 'app/src/main/java/se/leap/bitmaskclient/pluggableTransports/ObfsVpnClient.java')

diff --git a/app/src/main/java/se/leap/bitmaskclient/pluggableTransports/ObfsVpnClient.java b/app/src/main/java/se/leap/bitmaskclient/pluggableTransports/ObfsVpnClient.java
new file mode 100644
index 00000000..c871c708
--- /dev/null
+++ b/app/src/main/java/se/leap/bitmaskclient/pluggableTransports/ObfsVpnClient.java
@@ -0,0 +1,68 @@
+package se.leap.bitmaskclient.pluggableTransports;
+
+import android.util.Log;
+
+import java.util.Observable;
+import java.util.Observer;
+
+import client.Client_;
+import de.blinkt.openvpn.core.ConnectionStatus;
+import se.leap.bitmaskclient.eip.EipStatus;
+
+public class ObfsVpnClient implements Observer {
+
+    public static final String SOCKS_PORT = "4430";
+    public static final String SOCKS_IP = "127.0.0.1";
+
+    private static final String TAG = ObfsVpnClient.class.getSimpleName();
+    private boolean noNetwork;
+    // TODO: implement error signaling go->java
+    private boolean isErrorHandling;
+
+    private final client.Client_ obfsVpnClient;
+    private final Object LOCK = new Object();
+
+    public ObfsVpnClient(Obfs4Options options) {
+        obfsVpnClient = new Client_(options.udp, SOCKS_IP+":"+SOCKS_PORT, options.cert);
+    }
+
+    public void start() {
+        new Thread(() -> {
+            synchronized (LOCK) {
+                Log.d(TAG, "aquired LOCK");
+                new Thread(obfsVpnClient::start).start();
+                try {
+                    Thread.sleep(500);
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+                Log.d(TAG, "returning LOCK after 500 ms");
+            }
+        }).start();
+    }
+
+    public void stop() {
+        synchronized (LOCK) {
+            Log.d(TAG, "stopping obfsVpnClient...");
+            obfsVpnClient.stop();
+        }
+    }
+
+    @Override
+    public void update(Observable observable, Object arg) {
+        if (observable instanceof EipStatus) {
+            EipStatus status = (EipStatus) observable;
+            //This doesn't do anything yet, since the error handling is still missing
+            if (status.getLevel() == ConnectionStatus.LEVEL_NONETWORK) {
+                noNetwork = true;
+            } else {
+                noNetwork = false;
+                if (isErrorHandling) {
+                    isErrorHandling = false;
+                    stop();
+                    start();
+                }
+            }
+        }
+    }
+}
-- 
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