from scapy.layers.ipsec import SecurityAssociation, ESP
from util import ppp, ppc
from template_ipsec import TemplateIpsec
+from vpp_ipsec import VppIpsecSA, VppIpsecSpd, VppIpsecSpdEntry,\
+ VppIpsecSpdItfBinding
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_ip import DpoProto
+from vpp_papi import VppEnum
class IPSecNATTestCase(TemplateIpsec):
""" IPSec/NAT
-
- TRANSPORT MODE:
-
- --- encrypt ---
- |pg2| <-------> |VPP|
- --- decrypt ---
-
TUNNEL MODE:
--- --- ---
"""
- @classmethod
- def setUpClass(cls):
- super(IPSecNATTestCase, cls).setUpClass()
- cls.tcp_port_in = 6303
- cls.tcp_port_out = 6303
- cls.udp_port_in = 6304
- cls.udp_port_out = 6304
- cls.icmp_id_in = 6305
- cls.icmp_id_out = 6305
- cls.tun_if = cls.pg0
- cls.config_esp_tun()
- cls.logger.info(cls.vapi.ppcli("show ipsec"))
- client = socket.inet_pton(socket.AF_INET, cls.remote_tun_if_host)
- cls.vapi.ip_add_del_route(client, 32, cls.pg0.remote_ip4n)
+ tcp_port_in = 6303
+ tcp_port_out = 6303
+ udp_port_in = 6304
+ udp_port_out = 6304
+ icmp_id_in = 6305
+ icmp_id_out = 6305
+
+ def setUp(self):
+ super(IPSecNATTestCase, self).setUp()
+ self.tun_if = self.pg0
+
+ self.tun_spd = VppIpsecSpd(self, self.tun_spd_id)
+ self.tun_spd.add_vpp_config()
+ VppIpsecSpdItfBinding(self, self.tun_spd,
+ self.tun_if).add_vpp_config()
+
+ p = self.ipv4_params
+ self.config_esp_tun(p)
+ self.logger.info(self.vapi.ppcli("show ipsec"))
+
+ d = DpoProto.DPO_PROTO_IP6 if p.is_ipv6 else DpoProto.DPO_PROTO_IP4
+ VppIpRoute(self, p.remote_tun_if_host, p.addr_len,
+ [VppRoutePath(self.tun_if.remote_addr[p.addr_type],
+ 0xffffffff,
+ proto=d)],
+ is_ip6=p.is_ipv6).add_vpp_config()
+
+ def tearDown(self):
+ super(IPSecNATTestCase, self).tearDown()
def create_stream_plain(self, src_mac, dst_mac, src_ip, dst_ip):
return [
def verify_capture_encrypted(self, capture, sa):
for packet in capture:
try:
+ copy = packet.__class__(str(packet))
+ del copy[UDP].len
+ copy = packet.__class__(str(copy))
+ self.assert_equal(packet[UDP].len, copy[UDP].len,
+ "UDP header length")
+ self.assert_packet_checksums_valid(packet)
self.assertIn(ESP, packet[IP])
decrypt_pkt = sa.decrypt(packet[IP])
+ self.assert_packet_checksums_valid(decrypt_pkt)
self.assert_equal(decrypt_pkt[IP].src, self.pg1.remote_ip4,
"encrypted packet source address")
self.assert_equal(decrypt_pkt[IP].dst, self.tun_if.remote_ip4,
"encrypted packet destination address")
- # if decrypt_pkt.haslayer(TCP):
- # self.tcp_port_out = decrypt_pkt[TCP].sport
- # elif decrypt_pkt.haslayer(UDP):
- # self.udp_port_out = decrypt_pkt[UDP].sport
- # else:
- # self.icmp_id_out = decrypt_pkt[ICMP].id
except Exception:
self.logger.error(
ppp("Unexpected or invalid encrypted packet:", packet))
raise
- @classmethod
- def config_esp_tun(cls):
- cls.vapi.ipsec_sad_add_del_entry(cls.scapy_tun_sa_id,
- cls.scapy_tun_spi,
- cls.auth_algo_vpp_id, cls.auth_key,
- cls.crypt_algo_vpp_id,
- cls.crypt_key, cls.vpp_esp_protocol,
- cls.pg1.remote_ip4n,
- cls.tun_if.remote_ip4n)
- cls.vapi.ipsec_sad_add_del_entry(cls.vpp_tun_sa_id,
- cls.vpp_tun_spi,
- cls.auth_algo_vpp_id, cls.auth_key,
- cls.crypt_algo_vpp_id,
- cls.crypt_key, cls.vpp_esp_protocol,
- cls.tun_if.remote_ip4n,
- cls.pg1.remote_ip4n)
- cls.vapi.ipsec_spd_add_del(cls.tun_spd_id)
- cls.vapi.ipsec_interface_add_del_spd(cls.tun_spd_id,
- cls.tun_if.sw_if_index)
- l_startaddr = r_startaddr = socket.inet_pton(socket.AF_INET,
- "0.0.0.0")
- l_stopaddr = r_stopaddr = socket.inet_pton(socket.AF_INET,
- "255.255.255.255")
- cls.vapi.ipsec_spd_add_del_entry(cls.tun_spd_id, cls.vpp_tun_sa_id,
- l_startaddr, l_stopaddr, r_startaddr,
- r_stopaddr,
- protocol=socket.IPPROTO_ESP)
- cls.vapi.ipsec_spd_add_del_entry(cls.tun_spd_id, cls.scapy_tun_sa_id,
- l_startaddr, l_stopaddr, r_startaddr,
- r_stopaddr, is_outbound=0,
- protocol=socket.IPPROTO_ESP)
- cls.vapi.ipsec_spd_add_del_entry(cls.tun_spd_id, cls.vpp_tun_sa_id,
- l_startaddr, l_stopaddr, r_startaddr,
- r_stopaddr, remote_port_start=4500,
- remote_port_stop=4500,
- protocol=socket.IPPROTO_UDP)
- cls.vapi.ipsec_spd_add_del_entry(cls.tun_spd_id, cls.scapy_tun_sa_id,
- l_startaddr, l_stopaddr, r_startaddr,
- r_stopaddr, remote_port_start=4500,
- remote_port_stop=4500,
- protocol=socket.IPPROTO_UDP,
- is_outbound=0)
- l_startaddr = l_stopaddr = cls.tun_if.remote_ip4n
- r_startaddr = r_stopaddr = cls.pg1.remote_ip4n
- cls.vapi.ipsec_spd_add_del_entry(cls.tun_spd_id, cls.vpp_tun_sa_id,
- l_startaddr, l_stopaddr, r_startaddr,
- r_stopaddr, priority=10, policy=3,
- is_outbound=0)
- cls.vapi.ipsec_spd_add_del_entry(cls.tun_spd_id, cls.scapy_tun_sa_id,
- r_startaddr, r_stopaddr, l_startaddr,
- l_stopaddr, priority=10, policy=3)
+ def config_esp_tun(self, params):
+ addr_type = params.addr_type
+ scapy_tun_sa_id = params.scapy_tun_sa_id
+ scapy_tun_spi = params.scapy_tun_spi
+ vpp_tun_sa_id = params.vpp_tun_sa_id
+ vpp_tun_spi = params.vpp_tun_spi
+ auth_algo_vpp_id = params.auth_algo_vpp_id
+ auth_key = params.auth_key
+ crypt_algo_vpp_id = params.crypt_algo_vpp_id
+ crypt_key = params.crypt_key
+ addr_any = params.addr_any
+ addr_bcast = params.addr_bcast
+ flags = (VppEnum.vl_api_ipsec_sad_flags_t.
+ IPSEC_API_SAD_FLAG_UDP_ENCAP)
+ e = VppEnum.vl_api_ipsec_spd_action_t
+
+ VppIpsecSA(self, scapy_tun_sa_id, scapy_tun_spi,
+ auth_algo_vpp_id, auth_key,
+ crypt_algo_vpp_id, crypt_key,
+ self.vpp_esp_protocol,
+ self.pg1.remote_addr[addr_type],
+ self.tun_if.remote_addr[addr_type],
+ flags=flags).add_vpp_config()
+ VppIpsecSA(self, vpp_tun_sa_id, vpp_tun_spi,
+ auth_algo_vpp_id, auth_key,
+ crypt_algo_vpp_id, crypt_key,
+ self.vpp_esp_protocol,
+ self.tun_if.remote_addr[addr_type],
+ self.pg1.remote_addr[addr_type],
+ flags=flags).add_vpp_config()
+
+ VppIpsecSpdEntry(self, self.tun_spd, scapy_tun_sa_id,
+ addr_any, addr_bcast,
+ addr_any, addr_bcast,
+ socket.IPPROTO_ESP).add_vpp_config()
+ VppIpsecSpdEntry(self, self.tun_spd, scapy_tun_sa_id,
+ addr_any, addr_bcast,
+ addr_any, addr_bcast,
+ socket.IPPROTO_ESP,
+ is_outbound=0).add_vpp_config()
+ VppIpsecSpdEntry(self, self.tun_spd, scapy_tun_sa_id,
+ addr_any, addr_bcast,
+ addr_any, addr_bcast,
+ socket.IPPROTO_UDP,
+ remote_port_start=4500,
+ remote_port_stop=4500).add_vpp_config()
+ VppIpsecSpdEntry(self, self.tun_spd, scapy_tun_sa_id,
+ addr_any, addr_bcast,
+ addr_any, addr_bcast,
+ socket.IPPROTO_UDP,
+ remote_port_start=4500,
+ remote_port_stop=4500,
+ is_outbound=0).add_vpp_config()
+ VppIpsecSpdEntry(self, self.tun_spd, vpp_tun_sa_id,
+ self.tun_if.remote_addr[addr_type],
+ self.tun_if.remote_addr[addr_type],
+ self.pg1.remote_addr[addr_type],
+ self.pg1.remote_addr[addr_type],
+ 0, priority=10,
+ policy=e.IPSEC_API_SPD_ACTION_PROTECT,
+ is_outbound=0).add_vpp_config()
+ VppIpsecSpdEntry(self, self.tun_spd, scapy_tun_sa_id,
+ self.pg1.remote_addr[addr_type],
+ self.pg1.remote_addr[addr_type],
+ self.tun_if.remote_addr[addr_type],
+ self.tun_if.remote_addr[addr_type],
+ 0, policy=e.IPSEC_API_SPD_ACTION_PROTECT,
+ priority=10).add_vpp_config()
def test_ipsec_nat_tun(self):
""" IPSec/NAT tunnel test case """
- scapy_tun_sa = SecurityAssociation(ESP,
- spi=self.scapy_tun_spi,
- crypt_algo=self.crypt_algo,
- crypt_key=self.crypt_key,
- auth_algo=self.auth_algo,
- auth_key=self.auth_key,
+ p = self.ipv4_params
+ scapy_tun_sa = SecurityAssociation(ESP, spi=p.scapy_tun_spi,
+ crypt_algo=p.crypt_algo,
+ crypt_key=p.crypt_key,
+ auth_algo=p.auth_algo,
+ auth_key=p.auth_key,
tunnel_header=IP(
src=self.pg1.remote_ip4,
dst=self.tun_if.remote_ip4),
self.verify_capture_encrypted(capture, scapy_tun_sa)
vpp_tun_sa = SecurityAssociation(ESP,
- spi=self.vpp_tun_spi,
- crypt_algo=self.crypt_algo,
- crypt_key=self.crypt_key,
- auth_algo=self.auth_algo,
- auth_key=self.auth_key,
+ spi=p.vpp_tun_spi,
+ crypt_algo=p.crypt_algo,
+ crypt_key=p.crypt_key,
+ auth_algo=p.auth_algo,
+ auth_key=p.auth_key,
tunnel_header=IP(
src=self.tun_if.remote_ip4,
dst=self.pg1.remote_ip4),
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