add dns proxy option

AndroidManifest.xml

@@ -2,8 +2,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           package="com.github.shadowsocks"
           android:installLocation="auto"
-          android:versionCode="5"
-          android:versionName="1.1.1">
+          android:versionCode="6"
+          android:versionName="1.1.2">
 
     <uses-permission android:name="android.permission.INTERNET"/>
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

pom.xml

@@ -4,7 +4,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.github.shadowsocks</groupId>
     <artifactId>shadowsocks</artifactId>
-    <version>1.1.1</version>
+    <version>1.1.2</version>
     <packaging>apk</packaging>
     <name>Shadowsocks</name>
 

res/values/strings.xml

@@ -160,6 +160,9 @@
         only works for Wifi on Android 4.0 and above.</string>
 
     <string name="remote_port">Remote Port</string>
-    <string name="remote_port_summary">Remote port of shadowsocks server</string>
+    <string name="remote_port_summary">Remote port of shadowsocks server.</string>
+
+    <string name="dns_proxy">DNS Proxy</string>
+    <string name="dns_proxy_summary">Redirect DNS queries to remote server.</string>
 
 </resources>

res/xml/shadowsocks_preference.xml

@@ -41,6 +41,13 @@
         </EditTextPreference>
     </PreferenceCategory>
     <PreferenceCategory android:title="@string/fearute_cat">
+        <CheckBoxPreference
+                android:dependency="isRunning"
+                android:defaultValue="true"
+                android:key="isDNSProxy"
+                android:summary="@string/dns_proxy_summary"
+                android:title="@string/dns_proxy">
+        </CheckBoxPreference>
         <CheckBoxPreference
                 android:dependency="isRunning"
                 android:defaultValue="true"

src/com/github/shadowsocks/ShadowsocksService.java

@@ -163,6 +163,7 @@ public class ShadowsocksService extends Service {
     private boolean isGlobalProxy = false;
     private boolean isGFWList = false;
     private boolean isBypassApps = false;
+    private boolean isDNSProxy = false;
     private ProxyedApp apps[];
     private Method mSetForeground;
     private Method mStartForeground;
@@ -203,7 +204,7 @@ public class ShadowsocksService extends Service {
         new Thread() {
             @Override
             public void run() {
-                final String cmd = String.format(BASE + 
+                final String cmd = String.format(BASE +
                         "shadowsocks -s \"%s\" -p \"%d\" -l \"%d\" -k \"%s\"",
                         appHost, remotePort, port, sitekey);
                 Node.exec(cmd);
@@ -251,6 +252,7 @@ public class ShadowsocksService extends Service {
         isGlobalProxy = settings.getBoolean("isGlobalProxy", false);
         isGFWList = settings.getBoolean("isGFWList", false);
         isBypassApps = settings.getBoolean("isBypassApps", false);
+        isDNSProxy = settings.getBoolean("isDNSProxy", false);
 
         new Thread(new Runnable() {
             @Override
@@ -258,16 +260,20 @@ public class ShadowsocksService extends Service {
 
                 boolean resolved = false;
 
-                if (appHost != null) {
-                    InetAddress addr = null;
-                    try {
-                        addr = InetAddress.getByName(appHost);
-                    } catch (UnknownHostException ignored) {
-                    }
-                    if (addr != null) {
-                        appHost = addr.getHostAddress();
-                        resolved = true;
+                if (isDNSProxy) {
+                    if (appHost != null) {
+                        InetAddress addr = null;
+                        try {
+                            addr = InetAddress.getByName(appHost);
+                        } catch (UnknownHostException ignored) {
+                        }
+                        if (addr != null) {
+                            appHost = addr.getHostAddress();
+                            resolved = true;
+                        }
                     }
+                } else {
+                    resolved = true;
                 }
 
                 handler.sendEmptyMessage(MSG_CONNECT_START);
@@ -519,17 +525,17 @@ public class ShadowsocksService extends Service {
 
         StringBuilder http_sb = new StringBuilder();
 
-        StringBuilder https_sb = new StringBuilder();
-
         init_sb.append(Utils.getIptables()).append(" -t nat -F OUTPUT\n");
 
         String cmd_bypass = Utils.getIptables() + CMD_IPTABLES_RETURN;
 
         init_sb.append(cmd_bypass.replace("-d 0.0.0.0", "--dport " + remotePort));
-        //init_sb.append(cmd_bypass.replace("-d 0.0.0.0", "--dport " + 53));
         init_sb.append(cmd_bypass.replace("0.0.0.0", "127.0.0.1"));
-        //init_sb.append(cmd_bypass.replace("-d 0.0.0.0", "-m owner --uid-owner "
-                //+ getApplicationInfo().uid));
+        if (!isDNSProxy) {
+            init_sb.append(cmd_bypass.replace("-d 0.0.0.0", "--dport " + 53));
+            init_sb.append(cmd_bypass.replace("-d 0.0.0.0", "-m owner --uid-owner "
+                    + getApplicationInfo().uid));
+        }
 
         if (hasRedirectSupport) {
             init_sb.append(Utils.getIptables()).append(" -t nat -A OUTPUT -p udp --dport 53 -j REDIRECT --to ").append(DNS_PORT).append("\n");
@@ -577,8 +583,6 @@ public class ShadowsocksService extends Service {
 
         String redt_rules = http_sb.toString();
 
-        redt_rules += https_sb.toString();
-
         Utils.runRootCommand(redt_rules);
 
         return true;