Merged in gvaladon/scapy-issues/Issue #307 (pull request #99)

Preliminary SEND support

scapy/contrib/send.py

+#! /usr/bin/env python
+
+## Copyright (C) 2009 Adline Stephane <adline.stephane@gmail.com>
+##
+## This program is published under a GPLv2 license
+
+# Partial support of RFC3971
+# scapy.contrib.description = SEND
+# scapy.contrib.status = loads
+
+from scapy.packet import *
+from scapy.fields import *
+from scapy.layers.inet6 import icmp6typescls, _ICMPv6NDGuessPayload
+
+send_icmp6typescls = { 11: "ICMPv6NDOptCGA",
+                       12: "ICMPv6NDOptRsaSig",
+                       13: "ICMPv6NDOptTmstp",
+                       14: "ICMPv6NDOptNonce"
+                     }
+icmp6typescls.update(send_icmp6typescls)
+
+class HashField(Field):
+    def __init__(self, name, default):
+        Field.__init__(self, name, default, "16s")
+    def h2i(self, pkt, x):
+        if type(x) is str:
+            try:
+                x = in6_ptop(x)
+            except socket.error:
+                x = Net6(x)
+        elif type(x) is list:
+            x = map(Net6, x)
+        return x
+    def i2m(self, pkt, x):
+        return inet_pton(socket.AF_INET6, x)
+    def m2i(self, pkt, x):
+        return inet_ntop(socket.AF_INET6, x)
+    def any2i(self, pkt, x):
+        return self.h2i(pkt,x)
+    def i2repr(self, pkt, x):
+        return self.i2h(pkt, x)    # No specific information to return
+
+class ICMPv6NDOptNonce(_ICMPv6NDGuessPayload, Packet):
+    name = "ICMPv6NDOptNonce"
+    fields_desc = [ ByteField("type",14),
+                    FieldLenField("len",None,length_of="data",fmt="B", adjust = lambda pkt,x: (x)/8),
+                    StrLenField("nonce","", length_from = lambda pkt: pkt.len*8-2) ]
+
+class ICMPv6NDOptTmstp(_ICMPv6NDGuessPayload, Packet):
+    name = "ICMPv6NDOptTmstp"
+    fields_desc = [ ByteField("type",13),
+                    ByteField("len",2),
+                    BitField("reserved",0, 48),
+                    LongField("timestamp", None) ]
+
+class ICMPv6NDOptRsaSig(_ICMPv6NDGuessPayload, Packet):
+    name = "ICMPv6NDOptRsaSig"
+    fields_desc = [ ByteField("type",12),
+                    FieldLenField("len",None,length_of="data",fmt="B", adjust = lambda pkt,x: (x)/8),
+                    ShortField("reserved",0),
+                    HashField("key_hash",None),
+                    StrLenField("signature_pad", "", length_from = lambda pkt: pkt.len*8-20) ]
+
+class ICMPv6NDOptCGA(_ICMPv6NDGuessPayload, Packet):
+    name = "ICMPv6NDOptCGA"
+    fields_desc = [ ByteField("type",11),
+                    FieldLenField("len",None,length_of="data",fmt="B", adjust = lambda pkt,x: (x)/8),
+                    ByteField("padlength",0),
+                    ByteField("reserved",0),
+                    StrLenField("CGA_PARAMS", "", length_from = lambda pkt: pkt.len*8 - pkt.padlength - 4),
+                    StrLenField("padding", None, length_from = lambda pkt: pkt.padlength) ]
+
+if __name__ == "__main__":
+    from scapy.all import *
+    interact(mydict=globals(), mybanner="SEND add-on")