Patches r555 of the http://code.google.com/p/android-wifi-tether/ project that adds a checkbox option which will turn your phone into a captive portal. To be combined with the botbraw basil httpd package

TetheredWiifi => RogueWifi xD

Index: .classpath
===================================================================
--- .classpath	(revision 555)
+++ .classpath	(working copy)
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
+	<classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/>
+	<classpathentry kind="con" path="com.android.ide.eclipse.adt.LIBRARIES"/>
 	<classpathentry kind="src" path="src"/>
-	<classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/>
 	<classpathentry kind="src" path="gen"/>
-	<classpathentry kind="con" path="com.android.ide.eclipse.adt.LIBRARIES"/>
 	<classpathentry kind="output" path="bin/classes"/>
 </classpath>
Index: project.properties
===================================================================
--- project.properties	(revision 555)
+++ project.properties	(working copy)
@@ -10,5 +10,5 @@
 # Indicates whether an apk should be generated for each density.
 split.density=false
 # Project target.
-target=android-11
+target=android-16
 apk-configurations=
Index: res/layout/setupview.xml
===================================================================
--- res/layout/setupview.xml	(revision 555)
+++ res/layout/setupview.xml	(working copy)
@@ -217,7 +217,12 @@
 			android:dialogTitle="@string/setup_layout_dnssecondary_dialog_title" 
 			android:maxLength="15"  
 			android:dialogMessage="@string/setup_layout_dnssecondary_dialog_message"
-			android:defaultValue="8.8.4.4" /> 
+			android:defaultValue="8.8.4.4" />
+		<CheckBoxPreference  
+			android:key="resolvednstogatewaypref"  
+			android:title="@string/setup_layout_resolvednstogateway"  
+			android:summary="@string/setup_layout_resolvednstogateway_summary" 
+			android:defaultValue="true" />
 	</PreferenceCategory>
 	<PreferenceCategory android:title="@string/setup_layout_category_notifications">
 		<ListPreference  
Index: res/raw/tether_edify
===================================================================
--- res/raw/tether_edify	(revision 555)
+++ res/raw/tether_edify	(working copy)
@@ -307,6 +307,8 @@
   #
   kill_process("dnsmasq");
   sleep("2");
+  ifelse((getcfg("dns.resolvetogateway") == "false"),(
+  log("Starting dnsmasq the regular way");
   run_program("/data/data/com.googlecode.android.wifi.tether/bin/dnsmasq -i " + getcfg("tether.interface") +" --dhcp-authoritative --no-negcache --user=root "+
                   "--no-resolv --no-hosts "+
                   "--server="+ getcfg("dns.primary") +" "+
@@ -314,7 +316,16 @@
                   "--dhcp-range="+ getcfg("dhcp.iprange") +" " +
                   "--dhcp-leasefile=/data/data/com.googlecode.android.wifi.tether/var/dnsmasq.leases " +
                   "--pid-file=/data/data/com.googlecode.android.wifi.tether/var/dnsmasq.pid");
-  
+                  
+  ),(
+  log("Resolving all requests to gateway ip");
+  run_program("/data/data/com.googlecode.android.wifi.tether/bin/dnsmasq -i " + getcfg("tether.interface") +" --dhcp-authoritative --no-negcache --user=root "+
+                  "--no-resolv --no-hosts "+
+			      "--address=/#/"+ getcfg("ip.gateway") +" "+
+                  "--dhcp-range="+ getcfg("dhcp.iprange") +" " +
+                  "--dhcp-leasefile=/data/data/com.googlecode.android.wifi.tether/var/dnsmasq.leases " +
+                  "--pid-file=/data/data/com.googlecode.android.wifi.tether/var/dnsmasq.pid");
+  ));
   #
   # Access control
   #
Index: res/values/strings.xml
===================================================================
--- res/values/strings.xml	(revision 555)
+++ res/values/strings.xml	(working copy)
@@ -177,6 +177,8 @@
 	<string name="setup_layout_category_dns">Domain-Nameserver</string>
 	<string name="setup_layout_dnsprimary">Change preferred DNS</string>
 	<string name="setup_layout_dnsprimary_summary">Change preferred DNS</string>
+	<string name="setup_layout_resolvednstogateway">Resolve DNS to gateway</string>
+	<string name="setup_layout_resolvednstogateway_summary">Resolve all DNS queries to this phone</string>
 	<string name="setup_layout_dnsprimary_dialog_title">Preferred Domain-Nameserver</string>
 	<string name="setup_layout_dnsprimary_dialog_message">Use the following DNS server address:</string>
 	<string name="setup_layout_dnssecondary">Change alternate DNS</string>
Index: src/com/googlecode/android/wifi/tether/SetupActivity.java
===================================================================
--- src/com/googlecode/android/wifi/tether/SetupActivity.java	(revision 555)
+++ src/com/googlecode/android/wifi/tether/SetupActivity.java	(working copy)
@@ -70,6 +70,7 @@
     private boolean currentRoutefixEnabled;
     private String currentPrimaryDNS;
     private String currentSecondaryDNS;
+    private boolean resolveDnsToGateway;
     private boolean currentHideSSID;
     private boolean currentDriverReload;
     private String keepaliveshutdown;
@@ -106,6 +107,7 @@
         this.currentRoutefixEnabled = this.application.settings.getBoolean("routefixpref", true);
         this.currentPrimaryDNS = this.application.settings.getString("dnsprimarypref", "8.8.8.8");
         this.currentSecondaryDNS = this.application.settings.getString("dnssecondarypref", "8.8.4.4");
+        this.resolveDnsToGateway = this.application.settings.getBoolean("resolvednstogatewaypref", true);
         this.currentHideSSID = this.application.settings.getBoolean("hidessidpref", false);
         
         this.currentDriverReload = this.application.settings.getBoolean("driverreloadpref", true);
@@ -984,7 +986,28 @@
 		    			msg.obj = message;
 		    			SetupActivity.this.displayToastMessageHandler.sendMessage(msg);
 		    		}
-		    	}			   	
+		    	}
+		    	else if (key.equals("resolvednstogatewaypref")) {
+		    		boolean resolveDnsToGateway = sharedPreferences.getBoolean("resolvednstogatewaypref", true);;
+		    		if (resolveDnsToGateway != SetupActivity.this.resolveDnsToGateway) {
+		    			// Restarting
+						try{
+							if (TetherService.singleton != null && TetherService.singleton.getState() == TetherService.STATE_RUNNING) {
+								TetherService.singleton.restart();
+		    				}
+							SetupActivity.this.resolveDnsToGateway = resolveDnsToGateway;
+						}
+						catch (Exception ex) {
+							message = getString(R.string.setup_activity_error_restart_tethering);
+							Log.e(TAG, "Exception happend while restarting service - Here is what I know: "+ex);
+						}
+
+		    			// Send Message
+		    			Message msg = new Message();
+		    			msg.obj = message;
+		    			SetupActivity.this.displayToastMessageHandler.sendMessage(msg);
+		    		}
+		    	}
 			   	
 	    	Looper.loop();
 			}
Index: src/com/googlecode/android/wifi/tether/TetherApplication.java
===================================================================
--- src/com/googlecode/android/wifi/tether/TetherApplication.java	(revision 555)
+++ src/com/googlecode/android/wifi/tether/TetherApplication.java	(working copy)
@@ -241,6 +241,7 @@
         boolean routefixEnabled = this.settings.getBoolean("routefixpref", true);
         String primaryDns = this.settings.getString("dnsprimarypref", "8.8.8.8");
         String secondaryDns = this.settings.getString("dnssecondarypref", "8.8.4.4");
+        boolean revoleDnsToGateway = this.settings.getBoolean("resolvednstogatewaypref", true);
         boolean hideSSID = this.settings.getBoolean("hidessidpref", false);
         boolean reloadDriver = this.settings.getBoolean("driverreloadpref", true);
         boolean reloadDriver2 = this.settings.getBoolean("driverreloadpref2", false);
@@ -270,6 +271,7 @@
 		// dns
 		this.tethercfg.put("dns.primary", primaryDns);
 		this.tethercfg.put("dns.secondary", secondaryDns);
+		this.tethercfg.put("dns.resolvetogateway", Boolean.toString(revoleDnsToGateway));
 		
 		if (mssclampingEnabled) {
 			this.tethercfg.put("mss.clamping", "true");