1 files changed, 38 insertions, 0 deletions

diff --git a/libmailutils/cidr/match.c b/libmailutils/cidr/match.c
new file mode 100644
index 000000000..dff9194ee
--- /dev/null
+++ b/libmailutils/cidr/match.c
@@ -0,0 +1,38 @@
+/* GNU Mailutils -- a suite of utilities for electronic mail
+   Copyright (C) 2011 Free Software Foundation, Inc.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 3 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General
+   Public License along with this library.  If not, see 
+   <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+#include <mailutils/cidr.h>
+#include <mailutils/errno.h>
+
+int
+mu_cidr_match (struct mu_cidr *a, struct mu_cidr *b)
+{
+  int i;
+
+  if (a->family != b->family)
+    return 1;
+  for (i = 0; i < a->len; i++)
+    {
+      if (a->address[i] != (b->address[i] & a->netmask[i]))
+        return 1;
+    }
+  return 0;
+}
+