1 files changed, 48 insertions, 0 deletions
diff --git a/scripts/external_libs/dpkt-1.8.6/dpkt/vrrp.py b/scripts/external_libs/dpkt-1.8.6/dpkt/vrrp.py
new file mode 100644
index 00000000..fbb97937
--- /dev/null
+++ b/scripts/external_libs/dpkt-1.8.6/dpkt/vrrp.py
@@ -0,0 +1,48 @@
+# $Id: vrrp.py 88 2013-03-05 19:43:17Z andrewflnr@gmail.com $
+
+"""Virtual Router Redundancy Protocol."""
+
+import dpkt
+
+class VRRP(dpkt.Packet):
+    __hdr__ = (
+        ('vtype', 'B', 0x21),
+        ('vrid', 'B', 0),
+        ('priority', 'B', 0),
+        ('count', 'B', 0),
+        ('atype', 'B', 0),
+        ('advtime', 'B', 0),
+        ('sum', 'H', 0),
+        )
+    addrs = ()
+    auth = ''
+    def _get_v(self):
+        return self.vtype >> 4
+    def _set_v(self, v):
+        self.vtype = (self.vtype & ~0xf) | (v << 4)
+    v = property(_get_v, _set_v)
+
+    def _get_type(self):
+        return self.vtype & 0xf
+    def _set_type(self, v):
+        self.vtype = (self.vtype & ~0xf0) | (v & 0xf)
+    type = property(_get_type, _set_type)
+    
+    def unpack(self, buf):
+        dpkt.Packet.unpack(self, buf)
+        l = []
+        off = 0
+        for off in range(0, 4 * self.count, 4):
+            l.append(self.data[off:off+4])
+        self.addrs = l
+        self.auth = self.data[off+4:]
+        self.data = ''
+
+    def __len__(self):
+        return self.__hdr_len__ + (4 * self.count) + len(self.auth)
+
+    def __str__(self):
+        data = ''.join(self.addrs) + self.auth
+        if not self.sum:
+            self.sum = dpkt.in_cksum(self.pack_hdr() + data)
+        return self.pack_hdr() + data