1 files changed, 21 insertions, 0 deletions
diff --git a/src/openvpn/misc.c b/src/openvpn/misc.c
index 7f72939..d2882d8 100644
--- a/src/openvpn/misc.c
+++ b/src/openvpn/misc.c
@@ -2120,3 +2120,24 @@ sanitize_control_message(const char *src, struct gc_arena *gc)
   *dest = '\0';
   return ret;
 }
+
+/**
+ * Will set or query for a global compat flag.  To modify the compat flags
+ * the COMPAT_FLAG_SET must be bitwise ORed together with the flag to set.
+ * If no "operator" flag is given it defaults to COMPAT_FLAG_QUERY,
+ * which returns the flag state.
+ *
+ * @param  flag  Flag to be set/queried for bitwise ORed with the operator flag
+ * @return Returns 0 if the flag is not set, otherwise the 'flag' value is returned
+ */
+bool
+compat_flag (unsigned int flag)
+{
+  static unsigned int compat_flags = 0;
+
+  if (flag & COMPAT_FLAG_SET)
+    compat_flags |= (flag >> 1);
+
+  return (compat_flags & (flag >> 1));
+
+}