Do not use route, use ip only if available

* Do not use /sbin/route at all, and use ip only if it is available. The
    previous "fix" was in fact wrong, as net-tools and iproute2 aren't
    essential packages and adding it as depends wont fix.

Change-Id: I88aa9794f39725c249ca167092217b524446052c

debian/changelog

@@ -1,3 +1,11 @@
+keystone (2:10.0.0-8) unstable; urgency=medium
+
+  * Do not use /sbin/route at all, and use ip only if it is available. The
+    previous "fix" was in fact wrong, as net-tools and iproute2 aren't
+    essential packages and adding it as depends wont fix.
+
+ -- Thomas Goirand <zigo@debian.org>  Fri, 31 Mar 2017 14:26:30 +0200
+
 keystone (2:10.0.0-7) unstable; urgency=medium
 
   * Team upload.

debian/control

@@ -147,7 +147,6 @@ Depends: adduser,
          dbconfig-common,
          init-system-helpers (>= 1.22~),
          libapache2-mod-wsgi,
-         net-tools,
          python-keystone (= ${source:Version}),
          q-text-as-data,
          sqlite3,

debian/keystone.config.in

@@ -65,9 +65,13 @@ keystone_create_endpoint_config () {
 		db_get keystone/endpoint-ip
 		IP=${RET}
 		if [ -z "${IP}" ] ; then
-			DEFROUTE_IF=`LC_ALL=C /sbin/route | grep default |awk -- '{ print $8 }' | cut -d" " -f1`
+			DEFROUTE_IF=`awk '{ if ( $2 == "00000000" ) print $1 }' /proc/net/route`
 			if [ -n "${DEFROUTE_IF}" ] ; then
-				DEFROUTE_IP=`LC_ALL=C ip addr show "${DEFROUTE_IF}" | grep inet | head -n 1 | awk '{print $2}' | cut -d/ -f1 | grep -E '^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$'`
+				if [ -x /bin/ip ] ; then
+					DEFROUTE_IP=`LC_ALL=C ip addr show "${DEFROUTE_IF}" | grep inet | head -n 1 | awk '{print $2}' | cut -d/ -f1 | grep -E '^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$'`
+				else
+					DEFROUTE_IP=`hostname -i | grep -E '^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$'`
+				fi
 				if [ -n "${DEFROUTE_IP}" ] ; then
 					db_set keystone/endpoint-ip ${DEFROUTE_IP}
 				fi