From 2ac53bbd4bf6c06a626ca12abd3d2a9758e986cb Mon Sep 17 00:00:00 2001
From: Guillaume Valadon <guillaume@valadon.net>
Date: Wed, 31 Dec 2014 11:26:42 +0100
Subject: [PATCH] More GTP messages
--HG--
branch : GTP support
---
scapy/contrib/gtp.py | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/scapy/contrib/gtp.py b/scapy/contrib/gtp.py
index 1ef22f87..776382f7 100644
--- a/scapy/contrib/gtp.py
+++ b/scapy/contrib/gtp.py
@@ -19,9 +19,11 @@ from scapy.all import *
GTPmessageType = { 1: "echo_request",
2: "echo_response",
16: "create_pdp_context_req",
+ 17: "create_pdp_context_res",
20: "delete_pdp_context_req",
21: "delete_pdp_context_res",
26: "error_indication",
+ 27: "pdu_notification_req",
255: "gtp_u_header" }
IEType = { 1: "Cause",
@@ -316,6 +318,7 @@ class APNStrLenField(StrLenField):
s = "".join(map(lambda x: chr(len(x))+x, s.split(".")))
return s
+
class IE_AccessPointName(Packet):
# Sent by SGSN or by GGSN as defined in 3GPP TS 23.060
name = "Access Point Name"
@@ -421,6 +424,7 @@ class GTPEchoResponse(Packet):
def answers(self, other):
return self.seq == other.seq
+
class GTPCreatePDPContextRequest(Packet):
# 3GPP TS 29.060 V9.1.0 (2009-12)
name = "GTP Create PDP Context Request"
@@ -431,6 +435,22 @@ class GTPCreatePDPContextRequest(Packet):
IE_GSNAddress(),
IE_NotImplementedTLV(ietype=135, length=15,data=RandString(15)) ],
IE_Dispatcher) ]
+ def hashret(self):
+ return struct.pack("H", self.seq)
+
+class GTPCreatePDPContextResponse(Packet):
+ # 3GPP TS 29.060 V9.1.0 (2009-12)
+ name = "GTP Create PDP Context Response"
+ fields_desc = [ ShortField("seq", RandShort()),
+ ByteField("npdu", 0),
+ ByteField("next_ex", 0),
+ PacketListField("IE_list", [], IE_Dispatcher) ]
+
+ def hashret(self):
+ return struct.pack("H", self.seq)
+
+ def answers(self, other):
+ return self.seq == other.seq
class GTPErrorIndication(Packet):
# 3GPP TS 29.060 V9.1.0 (2009-12)
@@ -456,6 +476,19 @@ class GTPDeletePDPContextResponse(Packet):
ByteField("next_ex",0),
PacketListField("IE_list", [], IE_Dispatcher) ]
+class GTPPDUNotificationRequest(Packet):
+ # 3GPP TS 29.060 V9.1.0 (2009-12)
+ name = "GTP PDU Notification Request"
+ fields_desc = [ XBitField("seq", 0, 16),
+ ByteField("npdu", 0),
+ ByteField("next_ex", 0),
+ PacketListField("IE_list", [ IE_IMSI(),
+ IE_TEICP(TEICI=RandInt()),
+ IE_EndUserAddress(PDPTypeNumber=0x21),
+ IE_AccessPointName(),
+ IE_GSNAddress(address="127.0.0.1"),
+ ], IE_Dispatcher) ]
+
class GTP_U_Header(Packet):
# 3GPP TS 29.060 V9.1.0 (2009-12)
name = "GTP-U Header"
@@ -494,8 +527,10 @@ bind_layers(UDP, GTPHeader, dport = 2123)
bind_layers(GTPHeader, GTPEchoRequest, gtp_type = 1)
bind_layers(GTPHeader, GTPEchoResponse, gtp_type = 2)
bind_layers(GTPHeader, GTPCreatePDPContextRequest, gtp_type = 16)
+bind_layers(GTPHeader, GTPCreatePDPContextResponse, gtp_type = 17)
bind_layers(GTPHeader, GTPDeletePDPContextRequest, gtp_type = 20)
bind_layers(GTPHeader, GTPDeletePDPContextResponse, gtp_type = 21)
+bind_layers(GTPHeader, GTPPDUNotificationRequest, gtp_type = 27)
# Bind GTP-U
bind_layers(UDP, GTP_U_Header)
bind_layers(GTP_U_Header, IP, gtp_type = 255)
--
GitLab