[PATCH v5] t_client.sh.in: Add utility function needs_openvpn()

From: Frank Lichtenheld <[email protected]>

This allows to skip tests on old versions of openvpn.
Makes it much easier to maintain a t_client.rc across
multiple versions.

Change-Id: I1905d9494336da4e91f1946d2ffd875720605b41
Signed-off-by: Frank Lichtenheld <[email protected]>
Acked-by: Razvan Cojocaru <[email protected]>
Gerrit URL: https://gerrit.openvpn.net/c/openvpn/+/1763
---

This change was reviewed on Gerrit and approved by at least one
developer. I request to merge it to master.

Gerrit URL: https://gerrit.openvpn.net/c/openvpn/+/1763
This mail reflects revision 5 of this Change.

Acked-by according to Gerrit (reflected above):
Razvan Cojocaru <[email protected]>

        
diff --git a/tests/t_client.sh.in b/tests/t_client.sh.in
index 7c23020..c3a9655 100755
--- a/tests/t_client.sh.in
+++ b/tests/t_client.sh.in
@@ -22,14 +22,16 @@
 t_client_ips_rc="${t_client_ips_rc:-${top_builddir}/t_client_ips.rc}"
 update_t_client_ips="${update_t_client_ips:-${srcdir}/update_t_client_ips.sh}"
 
-if [ -r "${top_builddir}"/t_client.rc ]; then
-    . "${top_builddir}"/t_client.rc
-elif [ -r "${srcdir}"/t_client.rc ]; then
-    . "${srcdir}"/t_client.rc
-else
-    echo "$0: cannot find 't_client.rc' in build dir ('${top_builddir}')" >&2
-    echo "$0: or source directory ('${srcdir}'). SKIPPING TEST." >&2
-    exit "${TCLIENT_SKIP_RC}"
+if [ -z "${t_client_rc}" ]; then
+    if [ -r "${top_builddir}"/t_client.rc ]; then
+        t_client_rc="${top_builddir}"/t_client.rc
+    elif [ -r "${srcdir}"/t_client.rc ]; then
+        t_client_rc="${srcdir}"/t_client.rc
+    else
+        echo "$0: cannot find 't_client.rc' in build dir ('${top_builddir}')" >&2
+        echo "$0: or source directory ('${srcdir}'). SKIPPING TEST." >&2
+        exit "${TCLIENT_SKIP_RC}"
+    fi
 fi
 
 # Check for external dependencies
@@ -63,6 +65,18 @@
     exit 1
 fi
 
+openvpn_version=$(${openvpn} --version | head -n 1 | cut -f2 -d" " | sed -E 's/^2\.([0123456789]+).*$/2\1/')
+
+needs_openvpn()
+{
+    needs_version=$1
+
+    [ "$openvpn_version" -ge "$needs_version" ]
+    return $?
+}
+
+. "${t_client_rc}"
+
 if [ -z "$TEST_RUN_LIST" ]; then
     echo "TEST_RUN_LIST empty, no tests defined.  SKIP test." >&2
     exit "${TCLIENT_SKIP_RC}"