From d47da680eb8d55a6eef64becb7459030df3c7241 Mon Sep 17 00:00:00 2001 From: Francois Clad Date: Mon, 9 Jul 2018 16:33:39 +0200 Subject: srv6: Fixing SRH parsing bug in Scapy 2.4 Change-Id: Ib2cb345d07665735697bf54ad48d353ba4112eda Signed-off-by: Francois Clad --- test/patches/scapy-2.4/inet6.py.patch | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 test/patches/scapy-2.4/inet6.py.patch (limited to 'test/patches') diff --git a/test/patches/scapy-2.4/inet6.py.patch b/test/patches/scapy-2.4/inet6.py.patch new file mode 100644 index 00000000000..0cb33d43e8c --- /dev/null +++ b/test/patches/scapy-2.4/inet6.py.patch @@ -0,0 +1,28 @@ +diff --git a/scapy/layers/inet6.py b/scapy/layers/inet6.py +index 6f9f16b..d61c621 100644 +--- a/scapy/layers/inet6.py ++++ b/scapy/layers/inet6.py +@@ -1089,9 +1089,9 @@ class IPv6ExtHdrSegmentRouting(_IPv6ExtHdr): + BitField("unused2", 0, 3), + ShortField("tag", 0), + IP6ListField("addresses", ["::1"], +- count_from=lambda pkt: pkt.lastentry), ++ count_from=lambda pkt: pkt.lastentry+1), + PacketListField("tlv_objects", [], IPv6ExtHdrSegmentRoutingTLV, +- length_from=lambda pkt: 8*pkt.len - 16*pkt.lastentry) ] ++ length_from=lambda pkt: 8*pkt.len - 16*(pkt.lastentry+1)) ] + + overload_fields = { IPv6: { "nh": 43 } } + +@@ -1119,7 +1119,10 @@ class IPv6ExtHdrSegmentRouting(_IPv6ExtHdr): + pkt = pkt[:3] + struct.pack("B", tmp_len) + pkt[4:] + + if self.lastentry is None: +- pkt = pkt[:4] + struct.pack("B", len(self.addresses)) + pkt[5:] ++ tmp_len = len(self.addresses) ++ if tmp_len: ++ tmp_len -= 1 ++ pkt = pkt[:4] + struct.pack("B", tmp_len) + pkt[5:] + + return _IPv6ExtHdr.post_build(self, pkt, pay) + -- cgit 1.2.3-korg