From 6e4b7008035b2bf1a9035b730aad178bfd424f85 Mon Sep 17 00:00:00 2001
From: Tad <tad@spotco.us>
Date: Thu, 2 Nov 2017 03:23:56 -0400
Subject: [PATCH] Expose *ConnectionPadding

---
 app/src/main/res/values/strings.xml              |  4 ++++
 app/src/main/res/xml/preferences.xml             | 16 ++++++++++++++++
 .../android/service/OrbotConstants.java          |  3 +++
 .../torproject/android/service/TorService.java   |  9 +++++++++
 4 files changed, 32 insertions(+)

diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 7dbc47c0..0a6c8db1 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -384,4 +384,8 @@
   <string name="pref_isolate_dest_summary">Use a different circuit for each destination address</string>
   <string name="no_transproxy_warning_short">WARNING: Transproxying no longer supported</string>
   <string name="no_transproxy_warning">WARNING: Transparent proxying not supported. Use Orbot Apps VPN instead.</string>
+  <string name="pref_connection_padding">Connection padding</string>
+  <string name="pref_connection_padding_summary">Always enables connection padding to defend against some forms of traffic analysis. Default: auto</string>
+  <string name="pref_reduced_connection_padding">Reduced connection padding</string>
+  <string name="pref_reduced_connection_padding_summary">Closes relay connections sooner and sends less padding packets to reduce data and battery usage</string>
 </resources>
diff --git a/app/src/main/res/xml/preferences.xml b/app/src/main/res/xml/preferences.xml
index 869bb0d5..3efc1c44 100644
--- a/app/src/main/res/xml/preferences.xml
+++ b/app/src/main/res/xml/preferences.xml
@@ -166,6 +166,22 @@ android:summary="@string/pref_isolate_dest_summary"
 android:enabled="true"></CheckBoxPreference>
 </PreferenceCategory>
 
+<PreferenceCategory android:title="ConnectionPadding">
+<CheckBoxPreference
+android:key="pref_connection_padding"
+android:defaultValue="false"
+android:title="@string/pref_connection_padding"
+android:summary="@string/pref_connection_padding_summary"
+android:enabled="true"></CheckBoxPreference>
+<CheckBoxPreference
+android:key="pref_reduced_connection_padding"
+android:defaultValue="true"
+android:title="@string/pref_reduced_connection_padding"
+android:summary="@string/pref_reduced_connection_padding_summary"
+android:enabled="true"></CheckBoxPreference>
+</PreferenceCategory>
+
+
 <PreferenceCategory android:title="@string/pref_proxy_title">
 <EditTextPreference android:key="pref_proxy_type"
 android:title="@string/pref_proxy_type_title"
diff --git a/orbotservice/src/main/java/org/torproject/android/service/OrbotConstants.java b/orbotservice/src/main/java/org/torproject/android/service/OrbotConstants.java
index 175ebf81..06b1da83 100644
--- a/orbotservice/src/main/java/org/torproject/android/service/OrbotConstants.java
+++ b/orbotservice/src/main/java/org/torproject/android/service/OrbotConstants.java
@@ -36,4 +36,7 @@ public interface OrbotConstants {
 
 	public final static String PREF_ISOLATE_DEST = "pref_isolate_dest";
 
+	public final static String PREF_CONNECTION_PADDING = "pref_connection_padding";
+	public final static String PREF_REDUCED_CONNECTION_PADDING = "pref_reduced_connection_padding";
+
 }
diff --git a/orbotservice/src/main/java/org/torproject/android/service/TorService.java b/orbotservice/src/main/java/org/torproject/android/service/TorService.java
index 012625b8..6c20a23e 100644
--- a/orbotservice/src/main/java/org/torproject/android/service/TorService.java
+++ b/orbotservice/src/main/java/org/torproject/android/service/TorService.java
@@ -672,6 +672,15 @@ public class TorService extends Service implements TorServiceConstants, OrbotCon
         extraLines.append("TestSocks 0").append('\n');
         extraLines.append("WarnUnsafeSocks 1").append('\n');
 
+	if(prefs.getBoolean(OrbotConstants.PREF_CONNECTION_PADDING, false))
+	{
+		extraLines.append("ConnectionPadding 1").append('\n');
+	}
+	if(prefs.getBoolean(OrbotConstants.PREF_REDUCED_CONNECTION_PADDING, true))
+	{
+		extraLines.append("ReducedConnectionPadding 1").append('\n');
+	}
+
         String transPort = prefs.getString("pref_transport", TorServiceConstants.TOR_TRANSPROXY_PORT_DEFAULT+"");
         String dnsPort = prefs.getString("pref_dnsport", TorServiceConstants.TOR_DNS_PORT_DEFAULT+"");