examples: add dispatcher example for exclusive wired/wifi

configure.ac

@@ -839,6 +839,7 @@ examples/ruby/Makefile
 examples/C/Makefile
 examples/C/glib/Makefile
 examples/C/qt/Makefile
+examples/dispatcher/Makefile
 vapi/Makefile
 ])
 AC_OUTPUT

examples/Makefile.am

@@ -2,4 +2,5 @@ SUBDIRS= \
 	shell \
 	python \
 	ruby \
-	C
+	C \
+	dispatcher

examples/dispatcher/70-wifi-wired-exclusive.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+export LC_ALL=C
+
+# This dispatcher script makes WiFi mutually exclusive with
+# wired networking.  When a wired interface is connected,
+# WiFi will be set to airplane mode (rfkilled).  When the wired
+# interface is disconnected, WiFi will be turned back on.
+
+enable_disable_wifi ()
+{
+	result=$(nmcli dev | grep "802-3-ethernet" | grep -w "connected")
+	if [ -n "$result" ]; then
+		nmcli nm wifi off
+	else
+		nmcli nm wifi on
+	fi
+}
+
+if [ "$2" = "up" ]; then
+	enable_disable_wifi
+fi
+
+if [ "$2" = "down" ]; then
+	enable_disable_wifi
+fi
+

examples/dispatcher/Makefile.am

@@ -0,0 +1,3 @@
+EXTRA_DIST = \
+	70-wifi-wired-exclusive.sh
+