1 files changed, 113 insertions, 0 deletions
diff --git a/external_libs/python/dpkt-1.8.6.2/dpkt/ntp.py b/external_libs/python/dpkt-1.8.6.2/dpkt/ntp.py
new file mode 100644
index 00000000..c522c5e3
--- /dev/null
+++ b/external_libs/python/dpkt-1.8.6.2/dpkt/ntp.py
@@ -0,0 +1,113 @@
+# $Id: ntp.py 48 2008-05-27 17:31:15Z yardley $
+# -*- coding: utf-8 -*-
+"""Network Time Protocol."""
+
+import dpkt
+from decorators import deprecated
+
+# NTP v4
+
+# Leap Indicator (LI) Codes
+NO_WARNING = 0
+LAST_MINUTE_61_SECONDS = 1
+LAST_MINUTE_59_SECONDS = 2
+ALARM_CONDITION = 3
+
+# Mode Codes
+RESERVED = 0
+SYMMETRIC_ACTIVE = 1
+SYMMETRIC_PASSIVE = 2
+CLIENT = 3
+SERVER = 4
+BROADCAST = 5
+CONTROL_MESSAGE = 6
+PRIVATE = 7
+
+
+class NTP(dpkt.Packet):
+    __hdr__ = (
+        ('flags', 'B', 0),
+        ('stratum', 'B', 0),
+        ('interval', 'B', 0),
+        ('precision', 'B', 0),
+        ('delay', 'I', 0),
+        ('dispersion', 'I', 0),
+        ('id', '4s', 0),
+        ('update_time', '8s', 0),
+        ('originate_time', '8s', 0),
+        ('receive_time', '8s', 0),
+        ('transmit_time', '8s', 0)
+    )
+
+    @property
+    def v(self):
+        return (self.flags >> 3) & 0x7
+
+    @v.setter
+    def v(self, v):
+        self.flags = (self.flags & ~0x38) | ((v & 0x7) << 3)
+
+    @property
+    def li(self):
+        return (self.flags >> 6) & 0x3
+
+    @li.setter
+    def li(self, li):
+        self.flags = (self.flags & ~0xc0) | ((li & 0x3) << 6)
+
+    @property
+    def mode(self):
+        return self.flags & 0x7
+
+    @mode.setter
+    def mode(self, mode):
+        self.flags = (self.flags & ~0x7) | (mode & 0x7)
+
+    # Deprecated methods, will be removed in the future
+    # =================================================
+    @deprecated
+    def _get_v(self): return self.v
+
+    @deprecated
+    def _set_v(self, v): self.v = v
+
+    @deprecated
+    def _get_li(self): return self.li
+
+    @deprecated
+    def _set_li(self, li): self.li = li
+
+    @deprecated
+    def _get_mode(self): return self.mode
+
+    @deprecated
+    def _set_mode(self, mode): self.mode = mode
+    # =================================================
+
+__s = '\x24\x02\x04\xef\x00\x00\x00\x84\x00\x00\x33\x27\xc1\x02\x04\x02\xc8\x90\xec\x11\x22\xae\x07\xe5\xc8\x90\xf9\xd9\xc0\x7e\x8c\xcd\xc8\x90\xf9\xd9\xda\xc5\xb0\x78\xc8\x90\xf9\xd9\xda\xc6\x8a\x93'
+
+
+def test_ntp_pack():
+    n = NTP(__s)
+    assert (__s == str(n))
+
+
+def test_ntp_unpack():
+    n = NTP(__s)
+    assert (n.li == NO_WARNING)
+    assert (n.v == 4)
+    assert (n.mode == SERVER)
+    assert (n.stratum == 2)
+    assert (n.id == '\xc1\x02\x04\x02')
+    # test get/set functions
+    n.li = ALARM_CONDITION
+    n.v = 3
+    n.mode = CLIENT
+    assert (n.li == ALARM_CONDITION)
+    assert (n.v == 3)
+    assert (n.mode == CLIENT)
+
+if __name__ == '__main__':
+    test_ntp_pack()
+    test_ntp_unpack()
+    print 'Tests Successful...'
+\ No newline at end of file