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-rw-r--r--GPL/traffic_scripts/ipsec_interface.py54
-rw-r--r--GPL/traffic_scripts/ipsec_policy.py48
2 files changed, 45 insertions, 57 deletions
diff --git a/GPL/traffic_scripts/ipsec_interface.py b/GPL/traffic_scripts/ipsec_interface.py
index 574985f679..e6e90a2598 100644
--- a/GPL/traffic_scripts/ipsec_interface.py
+++ b/GPL/traffic_scripts/ipsec_interface.py
@@ -1,6 +1,6 @@
#!/usr/bin/env python3
-# Copyright (c) 2021 Cisco and/or its affiliates.
+# Copyright (c) 2022 Cisco and/or its affiliates.
#
# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
#
@@ -77,7 +77,7 @@ def check_ipsec(
if not pkt_recv.haslayer(ip_layer):
raise RuntimeError(
- f"Not an {ip_layer.__name__} packet received: {pkt_recv!r}"
+ f"Not an {ip_layer.name} packet received: {pkt_recv!r}"
)
if pkt_recv[ip_layer].src != src_tun:
@@ -97,9 +97,6 @@ def check_ipsec(
ip_pkt = pkt_recv[ip_layer]
d_pkt = sa_in.decrypt(ip_pkt)
- print(u"Decrypted packet:")
- d_pkt.show2()
- print()
if d_pkt[ip_layer].dst != dst_ip:
raise RuntimeError(
@@ -151,19 +148,19 @@ def check_ip(pkt_recv, ip_layer, src_mac, dst_mac, src_ip, dst_ip):
if not pkt_recv.haslayer(ip_layer):
raise RuntimeError(
- f"Not an {ip_layer.__name__} packet received: {pkt_recv!r}"
+ f"Not an {ip_layer.name} packet received: {pkt_recv!r}"
)
if pkt_recv[ip_layer].dst != dst_ip:
raise RuntimeError(
f"Received packet has invalid destination address: "
- f"{pkt_recv[ip_layer.__name__].dst} should be: {dst_ip}"
+ f"{pkt_recv[ip_layer.name].dst} should be: {dst_ip}"
)
if pkt_recv[ip_layer].src != src_ip:
raise RuntimeError(
f"Received packet has invalid destination address: "
- f"{pkt_recv[ip_layer.__name__].dst} should be: {src_ip}"
+ f"{pkt_recv[ip_layer.name].dst} should be: {src_ip}"
)
if ip_layer == IP and pkt_recv[ip_layer].proto != 61:
@@ -214,19 +211,18 @@ def main():
sa_in = SecurityAssociation(
ESP, spi=l_spi, crypt_algo=crypto_alg,
crypt_key=crypto_key.encode(encoding=u"utf-8"), auth_algo=integ_alg,
- auth_key=integ_key.encode(encoding=u"utf-8"),
- tunnel_header=tunnel_in
+ auth_key=integ_key.encode(encoding=u"utf-8"), tunnel_header=tunnel_in
)
sa_out = SecurityAssociation(
ESP, spi=r_spi, crypt_algo=crypto_alg,
crypt_key=crypto_key.encode(encoding=u"utf-8"), auth_algo=integ_alg,
- auth_key=integ_key.encode(encoding=u"utf-8"),
- tunnel_header=tunnel_out
+ auth_key=integ_key.encode(encoding=u"utf-8"), tunnel_header=tunnel_out
)
sent_packets = list()
- tx_pkt_send = (Ether(src=tx_src_mac, dst=tx_dst_mac) / ip_pkt)
+ tx_pkt_send = (
+ Ether(src=tx_src_mac, dst=tx_dst_mac) / ip_pkt)
tx_pkt_send /= Raw()
size_limit = 78 if ip_layer == IPv6 else 64
if len(tx_pkt_send) < size_limit:
@@ -238,16 +234,16 @@ def main():
rx_pkt_recv = rx_rxq.recv(2)
if rx_pkt_recv is None:
- raise RuntimeError(f"{ip_layer.__name__} packet Rx timeout")
+ raise RuntimeError(f"{ip_layer.name} packet Rx timeout")
if rx_pkt_recv.haslayer(ICMPv6ND_NS):
# read another packet in the queue if the current one is ICMPv6ND_NS
continue
- elif rx_pkt_recv.haslayer(ICMPv6MLReport2):
+ if rx_pkt_recv.haslayer(ICMPv6MLReport2):
# read another packet in the queue if the current one is
# ICMPv6MLReport2
continue
- elif rx_pkt_recv.haslayer(ICMPv6ND_RA):
+ if rx_pkt_recv.haslayer(ICMPv6ND_RA):
# read another packet in the queue if the current one is
# ICMPv6ND_RA
continue
@@ -260,45 +256,37 @@ def main():
dst_ip, sa_in
)
- ip_pkt = ip_layer(src=dst_ip, dst=src_ip, proto=61) if ip_layer == IP \
+ rx_ip_pkt = ip_layer(src=dst_ip, dst=src_ip, proto=61) if ip_layer == IP \
else ip_layer(src=dst_ip, dst=src_ip)
- ip_pkt /= Raw()
- if len(ip_pkt) < (size_limit - 14):
- ip_pkt[Raw].load += (b"\0" * (size_limit - 14 - len(ip_pkt)))
- e_pkt = sa_out.encrypt(ip_pkt)
- rx_pkt_send = (Ether(src=rx_dst_mac, dst=rx_src_mac) /
- e_pkt)
+ rx_ip_pkt /= Raw()
+ if len(rx_ip_pkt) < (size_limit - 14):
+ rx_ip_pkt[Raw].load += (b"\0" * (size_limit - 14 - len(rx_ip_pkt)))
+ rx_pkt_send = (
+ Ether(src=rx_dst_mac, dst=rx_src_mac) / sa_out.encrypt(rx_ip_pkt))
rx_txq.send(rx_pkt_send)
while True:
tx_pkt_recv = tx_rxq.recv(2, ignore=sent_packets)
if tx_pkt_recv is None:
- raise RuntimeError(f"{ip_layer.__name__} packet Rx timeout")
+ raise RuntimeError(f"{ip_layer.name} packet Rx timeout")
if tx_pkt_recv.haslayer(ICMPv6ND_NS):
# read another packet in the queue if the current one is ICMPv6ND_NS
continue
- elif tx_pkt_recv.haslayer(ICMPv6MLReport2):
+ if tx_pkt_recv.haslayer(ICMPv6MLReport2):
# read another packet in the queue if the current one is
# ICMPv6MLReport2
continue
- elif tx_pkt_recv.haslayer(ICMPv6MLReport2):
- # read another packet in the queue if the current one is
- # ICMPv6MLReport2
- continue
- elif tx_pkt_recv.haslayer(ICMPv6ND_RA):
+ if tx_pkt_recv.haslayer(ICMPv6ND_RA):
# read another packet in the queue if the current one is
# ICMPv6ND_RA
continue
- # otherwise process the current packet
break
check_ip(tx_pkt_recv, ip_layer, tx_dst_mac, tx_src_mac, dst_ip, src_ip)
- sys.exit(0)
-
if __name__ == u"__main__":
main()
diff --git a/GPL/traffic_scripts/ipsec_policy.py b/GPL/traffic_scripts/ipsec_policy.py
index 413f36bceb..8ba7eb488d 100644
--- a/GPL/traffic_scripts/ipsec_policy.py
+++ b/GPL/traffic_scripts/ipsec_policy.py
@@ -1,6 +1,6 @@
#!/usr/bin/env python3
-# Copyright (c) 2021 Cisco and/or its affiliates.
+# Copyright (c) 2022 Cisco and/or its affiliates.
#
# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
#
@@ -128,7 +128,6 @@ def check_ip(pkt_recv, ip_layer, src_ip, dst_ip):
)
-# TODO: Pylint says too-many-locals and too-many-statements. Refactor!
def main():
"""Send and receive IPsec packet."""
@@ -152,16 +151,18 @@ def main():
rx_dst_mac = args.get_arg(u"rx_dst_mac")
src_ip = args.get_arg(u"src_ip")
dst_ip = args.get_arg(u"dst_ip")
+ src_tun = args.get_arg(u"src_tun")
+ dst_tun = args.get_arg(u"dst_tun")
crypto_alg = args.get_arg(u"crypto_alg")
crypto_key = args.get_arg(u"crypto_key")
integ_alg = args.get_arg(u"integ_alg")
integ_key = args.get_arg(u"integ_key")
l_spi = int(args.get_arg(u"l_spi"))
r_spi = int(args.get_arg(u"r_spi"))
- src_tun = args.get_arg(u"src_tun")
- dst_tun = args.get_arg(u"dst_tun")
ip_layer = IP if ip_address(src_ip).version == 4 else IPv6
+ ip_pkt = ip_layer(src=src_ip, dst=dst_ip, proto=61) if ip_layer == IP \
+ else ip_layer(src=src_ip, dst=dst_ip)
tunnel_out = ip_layer(src=src_tun, dst=dst_tun) if src_tun and dst_tun \
else None
@@ -183,16 +184,14 @@ def main():
auth_key=integ_key.encode(encoding=u"utf-8"), tunnel_header=tunnel_out
)
- ip_pkt = ip_layer(src=src_ip, dst=dst_ip, proto=61) if ip_layer == IP \
- else ip_layer(src=src_ip, dst=dst_ip)
- ip_pkt = ip_layer(ip_pkt)
-
- e_pkt = sa_out.encrypt(ip_pkt)
- tx_pkt_send = (Ether(src=tx_src_mac, dst=tx_dst_mac) /
- e_pkt)
-
sent_packets = list()
+ tx_pkt_send = (
+ Ether(src=tx_src_mac, dst=tx_dst_mac) / sa_out.encrypt(ip_pkt))
+
tx_pkt_send /= Raw()
+ size_limit = 78 if ip_layer == IPv6 else 64
+ if len(tx_pkt_send) < (size_limit - 14):
+ tx_pkt_send[Raw].load += (b"\0" * (size_limit - 14 - len(tx_pkt_send)))
sent_packets.append(tx_pkt_send)
tx_txq.send(tx_pkt_send)
@@ -205,11 +204,11 @@ def main():
if rx_pkt_recv.haslayer(ICMPv6ND_NS):
# read another packet in the queue if the current one is ICMPv6ND_NS
continue
- elif rx_pkt_recv.haslayer(ICMPv6MLReport2):
+ if rx_pkt_recv.haslayer(ICMPv6MLReport2):
# read another packet in the queue if the current one is
# ICMPv6MLReport2
continue
- elif rx_pkt_recv.haslayer(ICMPv6ND_RA):
+ if rx_pkt_recv.haslayer(ICMPv6ND_RA):
# read another packet in the queue if the current one is
# ICMPv6ND_RA
continue
@@ -217,30 +216,33 @@ def main():
# otherwise process the current packet
break
- check_ip(rx_pkt_recv, ip_layer, src_ip, dst_ip)
+ check_ip(
+ rx_pkt_recv, ip_layer, src_ip, dst_ip
+ )
rx_ip_pkt = ip_layer(src=dst_ip, dst=src_ip, proto=61) if ip_layer == IP \
else ip_layer(src=dst_ip, dst=src_ip)
- rx_pkt_send = (Ether(src=rx_dst_mac, dst=rx_src_mac) /
- rx_ip_pkt)
-
+ rx_pkt_send = (
+ Ether(src=rx_dst_mac, dst=rx_src_mac) / rx_ip_pkt)
rx_pkt_send /= Raw()
+ if len(rx_pkt_send) < size_limit:
+ rx_pkt_send[Raw].load += (b"\0" * (size_limit - len(rx_pkt_send)))
rx_txq.send(rx_pkt_send)
while True:
- tx_pkt_recv = tx_rxq.recv(2, sent_packets)
+ tx_pkt_recv = tx_rxq.recv(2, ignore=sent_packets)
if tx_pkt_recv is None:
- raise RuntimeError(u"ESP packet Rx timeout")
+ raise RuntimeError(f"{ip_layer.name} packet Rx timeout")
if tx_pkt_recv.haslayer(ICMPv6ND_NS):
# read another packet in the queue if the current one is ICMPv6ND_NS
continue
- elif tx_pkt_recv.haslayer(ICMPv6MLReport2):
+ if tx_pkt_recv.haslayer(ICMPv6MLReport2):
# read another packet in the queue if the current one is
# ICMPv6MLReport2
continue
- elif tx_pkt_recv.haslayer(ICMPv6ND_RA):
+ if tx_pkt_recv.haslayer(ICMPv6ND_RA):
# read another packet in the queue if the current one is
# ICMPv6ND_RA
continue
@@ -249,8 +251,6 @@ def main():
check_ipsec(tx_pkt_recv, ip_layer, src_tun, dst_ip, src_ip, sa_in)
- sys.exit(0)
-
if __name__ == u"__main__":
main()