scapy python 2/3

1 files changed, 86 insertions, 0 deletions

diff --git a/scripts/external_libs/scapy-2.3.1/python3/scapy/contrib/ppi.py b/scripts/external_libs/scapy-2.3.1/python3/scapy/contrib/ppi.py
new file mode 100644
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+++ b/scripts/external_libs/scapy-2.3.1/python3/scapy/contrib/ppi.py
@@ -0,0 +1,86 @@
+## This file is (hopefully) part of Scapy
+## See http://www.secdev.org/projects/scapy for more informations
+## <jellch@harris.com>
+## This program is published under a GPLv2 license
+
+# scapy.contrib.description = PPI
+# scapy.contrib.status = loads
+
+
+"""
+PPI (Per-Packet Information).
+"""
+import logging,struct
+from scapy.config import conf
+from scapy.packet import *
+from scapy.fields import *
+from scapy.layers.l2 import Ether
+from scapy.layers.dot11 import Dot11
+
+# Dictionary to map the TLV type to the class name of a sub-packet
+_ppi_types = {}
+def addPPIType(id, value):
+    _ppi_types[id] = value
+def getPPIType(id, default="default"):
+    return _ppi_types.get(id, _ppi_types.get(default, None))
+
+
+# Default PPI Field Header
+class PPIGenericFldHdr(Packet):
+    name = "PPI Field Header"
+    fields_desc = [ LEShortField('pfh_type', 0),
+                    FieldLenField('pfh_length', None, length_of="value", fmt='<H', adjust=lambda p,x:x+4),
+                    StrLenField("value", "", length_from=lambda p:p.pfh_length) ]
+
+    def extract_padding(self, p):
+        return "",p
+
+def _PPIGuessPayloadClass(p, **kargs):
+    """ This function tells the PacketListField how it should extract the
+        TLVs from the payload.  We pass cls only the length string
+        pfh_len says it needs.  If a payload is returned, that means
+        part of the sting was unused.  This converts to a Raw layer, and
+        the remainder of p is added as Raw's payload.  If there is no
+        payload, the remainder of p is added as out's payload.
+    """
+    if len(p) >= 4:
+        t,pfh_len = struct.unpack("<HH", p[:4])
+        # Find out if the value t is in the dict _ppi_types.
+        # If not, return the default TLV class
+        cls = getPPIType(t, "default")
+        pfh_len += 4
+        out = cls(p[:pfh_len], **kargs)
+        if (out.payload):
+            out.payload = conf.raw_layer(out.payload.load)
+            if (len(p) > pfh_len):
+                out.payload.payload = conf.padding_layer(p[pfh_len:])
+        elif (len(p) > pfh_len):
+            out.payload = conf.padding_layer(p[pfh_len:])
+        
+    else:
+        out = conf.raw_layer(p, **kargs)
+    return out
+
+
+
+
+class PPI(Packet):
+    name = "PPI Packet Header"
+    fields_desc = [ ByteField('pph_version', 0),
+                    ByteField('pph_flags', 0),
+                    FieldLenField('pph_len', None, length_of="PPIFieldHeaders", fmt="<H", adjust=lambda p,x:x+8 ),
+                    LEIntField('dlt', None),
+                    PacketListField("PPIFieldHeaders", [],  _PPIGuessPayloadClass, length_from=lambda p:p.pph_len-8,) ]
+    def guess_payload_class(self,payload):
+        return conf.l2types.get(self.dlt, Packet.guess_payload_class(self, payload))
+
+#Register PPI
+addPPIType("default", PPIGenericFldHdr)
+
+conf.l2types.register(192, PPI)
+conf.l2types.register_num2layer(192, PPI)
+
+bind_layers(PPI, Dot11, dlt=conf.l2types.get(Dot11))
+bind_layers(Dot11, PPI)
+bind_layers(PPI, Ether, dlt=conf.l2types.get(Ether))
+bind_layers(Dot11, Ether)