From 0fe9d37a223b388103e2924e6d1a28bcb0ae38fd Mon Sep 17 00:00:00 2001
From: cyberta <cyberta@riseup.net>
Date: Fri, 24 Jan 2020 14:21:34 -0600
Subject: rearrange firewalling code, move to separate package

---
 .../firewall/ShutdownFirewallTask.java             | 55 ++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 app/src/main/java/se/leap/bitmaskclient/firewall/ShutdownFirewallTask.java

(limited to 'app/src/main/java/se/leap/bitmaskclient/firewall/ShutdownFirewallTask.java')

diff --git a/app/src/main/java/se/leap/bitmaskclient/firewall/ShutdownFirewallTask.java b/app/src/main/java/se/leap/bitmaskclient/firewall/ShutdownFirewallTask.java
new file mode 100644
index 00000000..50fa77cd
--- /dev/null
+++ b/app/src/main/java/se/leap/bitmaskclient/firewall/ShutdownFirewallTask.java
@@ -0,0 +1,55 @@
+package se.leap.bitmaskclient.firewall;
+
+import android.os.AsyncTask;
+import android.util.Log;
+
+import java.lang.ref.WeakReference;
+
+import static se.leap.bitmaskclient.firewall.FirewallManager.BITMASK_CHAIN;
+import static se.leap.bitmaskclient.utils.Cmd.runBlockingCmd;
+
+class ShutdownFirewallTask extends AsyncTask<Void, Boolean, Boolean> {
+
+    private WeakReference<FirewallCallback> callbackWeakReference;
+
+    ShutdownFirewallTask(FirewallCallback callback) {
+        callbackWeakReference = new WeakReference<>(callback);
+    }
+
+    @Override
+    protected Boolean doInBackground(Void... voids) {
+        boolean success;
+        StringBuilder log = new StringBuilder();
+        String[] deleteChain = new String[]{
+                "su",
+                "id",
+                "ip6tables --delete OUTPUT --jump " + BITMASK_CHAIN,
+                "ip6tables --flush " + BITMASK_CHAIN,
+                "ip6tables --delete-chain " + BITMASK_CHAIN
+        };
+        try {
+            success = runBlockingCmd(deleteChain, log) == 0;
+        } catch (Exception e) {
+            e.printStackTrace();
+            Log.e(FirewallManager.TAG, log.toString());
+            return false;
+        }
+
+        try {
+            boolean allowSu = log.toString().contains("uid=0");
+            callbackWeakReference.get().onSuRequested(allowSu);
+        } catch (Exception e) {
+            //ignore
+        }
+        return success;
+    }
+
+    @Override
+    protected void onPostExecute(Boolean result) {
+        super.onPostExecute(result);
+        FirewallCallback callback = callbackWeakReference.get();
+        if (callback != null) {
+            callback.onFirewallStopped(result);
+        }
+    }
+}
-- 
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