reverting to dpkt v1.8.6 instead of 1.8.6.2 to avoid importing error of pystone modue

1 files changed, 26 insertions, 0 deletions

diff --git a/scripts/external_libs/dpkt-1.8.6.2/dpkt/tns.py b/scripts/external_libs/dpkt-1.8.6.2/dpkt/tns.py
new file mode 100644
index 00000000..931508e6
--- /dev/null
+++ b/scripts/external_libs/dpkt-1.8.6.2/dpkt/tns.py
@@ -0,0 +1,26 @@
+# $Id: tns.py 23 2006-11-08 15:45:33Z dugsong $
+# -*- coding: utf-8 -*-
+"""Transparent Network Substrate."""
+
+import dpkt
+
+
+class TNS(dpkt.Packet):
+    __hdr__ = (
+        ('length', 'H', 0),
+        ('pktsum', 'H', 0),
+        ('type', 'B', 0),
+        ('rsvd', 'B', 0),
+        ('hdrsum', 'H', 0),
+        ('msg', '0s', ''),
+    )
+
+    def unpack(self, buf):
+        dpkt.Packet.unpack(self, buf)
+        n = self.length - self.__hdr_len__
+        if n > len(self.data):
+            raise dpkt.NeedData('short message (missing %d bytes)' %
+                                (n - len(self.data)))
+        self.msg = self.data[:n]
+        self.data = self.data[n:]
+