scapy python 2/3

1 files changed, 77 insertions, 0 deletions

diff --git a/scripts/external_libs/scapy-2.3.1/python2/scapy/layers/ntp.py b/scripts/external_libs/scapy-2.3.1/python2/scapy/layers/ntp.py
new file mode 100644
index 00000000..6d11966c
--- /dev/null
+++ b/scripts/external_libs/scapy-2.3.1/python2/scapy/layers/ntp.py
@@ -0,0 +1,77 @@
+## This file is part of Scapy
+## See http://www.secdev.org/projects/scapy for more informations
+## Copyright (C) Philippe Biondi <phil@secdev.org>
+## This program is published under a GPLv2 license
+
+"""
+NTP (Network Time Protocol).
+"""
+
+import time
+from scapy.packet import *
+from scapy.fields import *
+from scapy.layers.inet import UDP
+
+
+# seconds between 01-01-1900 and 01-01-1970
+_NTP_BASETIME = 2208988800
+
+class TimeStampField(FixedPointField):
+    def __init__(self, name, default):
+        FixedPointField.__init__(self, name, default, 64, 32)
+
+    def i2repr(self, pkt, val):
+        if val is None:
+            return "--"
+        val = self.i2h(pkt,val)
+        if val < _NTP_BASETIME:
+            return val
+        return time.strftime("%a, %d %b %Y %H:%M:%S +0000", time.gmtime(val-_NTP_BASETIME))
+
+    def any2i(self, pkt, val):
+        if type(val) is str:
+            return int(time.mktime(time.strptime(val))) + _NTP_BASETIME + 3600 # XXX
+        return FixedPointField.any2i(self,pkt,val)
+    
+    def i2m(self, pkt, val):
+        if val is None:
+            val = FixedPointField.any2i(self, pkt, time.time()+_NTP_BASETIME)
+        return FixedPointField.i2m(self, pkt, val)
+        
+
+
+class NTP(Packet):
+    # RFC 1769
+    name = "NTP"
+    fields_desc = [ 
+         BitEnumField('leap', 0, 2,
+                      { 0: 'nowarning',
+                        1: 'longminute',
+                        2: 'shortminute',
+                        3: 'notsync'}),
+         BitField('version', 3, 3),
+         BitEnumField('mode', 3, 3,
+                      { 0: 'reserved',
+                        1: 'sym_active',
+                        2: 'sym_passive',
+                        3: 'client',
+                        4: 'server',
+                        5: 'broadcast',
+                        6: 'control',
+                        7: 'private'}),
+         BitField('stratum', 2, 8),
+         BitField('poll', 0xa, 8),          ### XXX : it's a signed int
+         BitField('precision', 0, 8),       ### XXX : it's a signed int
+         FixedPointField('delay', 0, size=32, frac_bits=16),
+         FixedPointField('dispersion', 0, size=32, frac_bits=16),
+         IPField('id', "127.0.0.1"),
+         TimeStampField('ref', 0),
+         TimeStampField('orig', None),  # None means current time
+         TimeStampField('recv', 0),
+         TimeStampField('sent', None) 
+         ]
+    def mysummary(self):
+        return self.sprintf("NTP v%ir,NTP.version%, %NTP.mode%")
+
+
+bind_layers( UDP,           NTP,           dport=123, sport=123)