1 files changed, 74 insertions, 0 deletions
diff --git a/src/tun/test_tun.c b/src/tun/test_tun.c
new file mode 100644
index 0000000..3539fd1
--- /dev/null
+++ b/src/tun/test_tun.c
@@ -0,0 +1,74 @@
+/*
+     This file is part of GNUnet.
+     (C) 2010, 2011, 2012 Christian Grothoff
+
+     GNUnet is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 3, or (at your
+     option) any later version.
+
+     GNUnet 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
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+
+/**
+ * @file tun/test_tun.c
+ * @brief test for tun.c
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "gnunet_tun_lib.h"
+
+static int ret;
+
+static void
+test_udp (size_t pll,
+	  int pl_fill,
+	  uint16_t crc)
+{
+  struct GNUNET_TUN_IPv4Header ip;
+  struct GNUNET_TUN_UdpHeader udp;
+  char payload[pll];
+  struct in_addr src;
+  struct in_addr dst;
+
+  GNUNET_assert (1 == inet_pton (AF_INET, "1.2.3.4", &src));
+  GNUNET_assert (1 == inet_pton (AF_INET, "122.2.3.5", &dst));
+  memset (payload, pl_fill, sizeof (payload));
+  GNUNET_TUN_initialize_ipv4_header (&ip,
+				     IPPROTO_UDP,
+				     pll + sizeof (udp),
+				     &src,
+				     &dst);
+  udp.source_port = htons (4242);
+  udp.destination_port = htons (4242);
+  udp.len = htons (pll);
+  GNUNET_TUN_calculate_udp4_checksum (&ip,
+				      &udp,
+				      payload,
+				      pll);
+  if (crc != ntohs (udp.crc))
+  {
+    fprintf (stderr, "Got CRC: %u, wanted: %u\n", 
+	     ntohs (udp.crc),
+	     crc);
+    ret = 1;
+  }
+}
+
+int main (int argc,
+	  char **argv)
+{
+  test_udp (4, 3, 22439);
+  test_udp (4, 1, 23467);
+  test_udp (7, 17, 6516);
+  test_udp (12451, 251, 42771);
+  return ret;
+}