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VPP-1508: Use scapy.compat to manage packet level library differences.
[vpp.git] / test / test_ipsec_nat.py
diff --git a/test/test_ipsec_nat.py b/test/test_ipsec_nat.py
index 7a5aca6..e364f5f 100644 (file)
--- a/test/test_ipsec_nat.py
+++ b/test/test_ipsec_nat.py
@@ -2,22 +2,22 @@
 
 import socket
 
 
 import socket
 
+import scapy.compat
 from scapy.layers.l2 import Ether
 from scapy.layers.inet import ICMP, IP, TCP, UDP
 from scapy.layers.ipsec import SecurityAssociation, ESP
 from scapy.layers.l2 import Ether
 from scapy.layers.inet import ICMP, IP, TCP, UDP
 from scapy.layers.ipsec import SecurityAssociation, ESP
+
 from util import ppp, ppc
 from util import ppp, ppc
-from framework import VppTestCase
+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(VppTestCase):
+class IPSecNATTestCase(TemplateIpsec):
     """ IPSec/NAT
     """ IPSec/NAT
-
-    TRANSPORT MODE:
-
-     ---   encrypt   ---
-    |pg2| <-------> |VPP|
-     ---   decrypt   ---
-
     TUNNEL MODE:
 
 
     TUNNEL MODE:
 
 
@@ -31,26 +31,35 @@ class IPSecNATTestCase(VppTestCase):
      ---            ---           ---
     """
 
      ---            ---           ---
     """
 
-    remote_pg0_client_addr = '1.1.1.1'
-
-    @classmethod
-    def setUpClass(cls):
-        super(IPSecNATTestCase, cls).setUpClass()
-        cls.create_pg_interfaces(range(2))
-        for i in cls.pg_interfaces:
-            i.configure_ipv4_neighbors()
-            i.admin_up()
-            i.config_ip4()
-            i.resolve_arp()
-
-        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.config_esp_tun()
-        cls.logger.info(cls.vapi.ppcli("show ipsec"))
+    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 create_stream_plain(self, src_mac, dst_mac, src_ip, dst_ip):
         return [
@@ -88,7 +97,7 @@ class IPSecNATTestCase(VppTestCase):
         for packet in capture:
             try:
                 self.assert_packet_checksums_valid(packet)
         for packet in capture:
             try:
                 self.assert_packet_checksums_valid(packet)
-                self.assert_equal(packet[IP].src, self.pg0.remote_ip4,
+                self.assert_equal(packet[IP].src, self.tun_if.remote_ip4,
                                   "decrypted packet source address")
                 self.assert_equal(packet[IP].dst, self.pg1.remote_ip4,
                                   "decrypted packet destination address")
                                   "decrypted packet source address")
                 self.assert_equal(packet[IP].dst, self.pg1.remote_ip4,
                                   "decrypted packet destination address")
@@ -119,120 +128,136 @@ class IPSecNATTestCase(VppTestCase):
     def verify_capture_encrypted(self, capture, sa):
         for packet in capture:
             try:
     def verify_capture_encrypted(self, capture, sa):
         for packet in capture:
             try:
+                copy = packet.__class__(scapy.compat.raw(packet))
+                del copy[UDP].len
+                copy = packet.__class__(scapy.compat.raw(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.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].src, self.pg1.remote_ip4,
                                   "encrypted packet source address")
-                self.assert_equal(decrypt_pkt[IP].dst, self.pg0.remote_ip4,
+                self.assert_equal(decrypt_pkt[IP].dst, self.tun_if.remote_ip4,
                                   "encrypted packet destination address")
                                   "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
 
             except Exception:
                 self.logger.error(
                     ppp("Unexpected or invalid encrypted packet:", packet))
                 raise
 
-    @classmethod
-    def config_esp_tun(cls):
-        spd_id = 1
-        remote_sa_id = 10
-        local_sa_id = 20
-        scapy_tun_spi = 1001
-        vpp_tun_spi = 1000
-        client = socket.inet_pton(socket.AF_INET, cls.remote_pg0_client_addr)
-        cls.vapi.ip_add_del_route(client, 32, cls.pg0.remote_ip4n)
-        cls.vapi.ipsec_sad_add_del_entry(remote_sa_id, scapy_tun_spi,
-                                         cls.pg1.remote_ip4n,
-                                         cls.pg0.remote_ip4n,
-                                         integrity_key_length=20,
-                                         crypto_key_length=16,
-                                         protocol=1, udp_encap=1)
-        cls.vapi.ipsec_sad_add_del_entry(local_sa_id, vpp_tun_spi,
-                                         cls.pg0.remote_ip4n,
-                                         cls.pg1.remote_ip4n,
-                                         integrity_key_length=20,
-                                         crypto_key_length=16,
-                                         protocol=1, udp_encap=1)
-        cls.vapi.ipsec_spd_add_del(spd_id)
-        cls.vapi.ipsec_interface_add_del_spd(spd_id, cls.pg0.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(spd_id, l_startaddr, l_stopaddr,
-                                         r_startaddr, r_stopaddr,
-                                         protocol=socket.IPPROTO_ESP)
-        cls.vapi.ipsec_spd_add_del_entry(spd_id, l_startaddr, l_stopaddr,
-                                         r_startaddr, r_stopaddr,
-                                         protocol=socket.IPPROTO_ESP,
-                                         is_outbound=0)
-        cls.vapi.ipsec_spd_add_del_entry(spd_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(spd_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.pg0.remote_ip4n
-        r_startaddr = r_stopaddr = cls.pg1.remote_ip4n
-        cls.vapi.ipsec_spd_add_del_entry(spd_id, l_startaddr, l_stopaddr,
-                                         r_startaddr, r_stopaddr,
-                                         priority=10, policy=3,
-                                         is_outbound=0, sa_id=local_sa_id)
-        cls.vapi.ipsec_spd_add_del_entry(spd_id, r_startaddr, r_stopaddr,
-                                         l_startaddr, l_stopaddr,
-                                         priority=10, policy=3,
-                                         sa_id=remote_sa_id)
+    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 """
 
     def test_ipsec_nat_tun(self):
         """ IPSec/NAT tunnel test case """
-        local_tun_sa = SecurityAssociation(ESP, spi=0x000003e9,
-                                           crypt_algo='AES-CBC',
-                                           crypt_key='JPjyOWBeVEQiMe7h',
-                                           auth_algo='HMAC-SHA1-96',
-                                           auth_key='C91KUR9GYMm5GfkEvNjX',
+        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,
                                            tunnel_header=IP(
                                                src=self.pg1.remote_ip4,
-                                               dst=self.pg0.remote_ip4),
+                                               dst=self.tun_if.remote_ip4),
                                            nat_t_header=UDP(
                                                sport=4500,
                                                dport=4500))
         # in2out - from private network to public
         pkts = self.create_stream_plain(
             self.pg1.remote_mac, self.pg1.local_mac,
                                            nat_t_header=UDP(
                                                sport=4500,
                                                dport=4500))
         # in2out - from private network to public
         pkts = self.create_stream_plain(
             self.pg1.remote_mac, self.pg1.local_mac,
-            self.pg1.remote_ip4, self.pg0.remote_ip4)
+            self.pg1.remote_ip4, self.tun_if.remote_ip4)
         self.pg1.add_stream(pkts)
         self.pg_enable_capture(self.pg_interfaces)
         self.pg_start()
         self.pg1.add_stream(pkts)
         self.pg_enable_capture(self.pg_interfaces)
         self.pg_start()
-        capture = self.pg0.get_capture(len(pkts))
-        self.verify_capture_encrypted(capture, local_tun_sa)
-
-        remote_tun_sa = SecurityAssociation(ESP, spi=0x000003e8,
-                                            crypt_algo='AES-CBC',
-                                            crypt_key='JPjyOWBeVEQiMe7h',
-                                            auth_algo='HMAC-SHA1-96',
-                                            auth_key='C91KUR9GYMm5GfkEvNjX',
-                                            tunnel_header=IP(
-                                                src=self.pg0.remote_ip4,
-                                                dst=self.pg1.remote_ip4),
-                                            nat_t_header=UDP(
-                                                sport=4500,
-                                                dport=4500))
+        capture = self.tun_if.get_capture(len(pkts))
+        self.verify_capture_encrypted(capture, scapy_tun_sa)
+
+        vpp_tun_sa = SecurityAssociation(ESP,
+                                         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),
+                                         nat_t_header=UDP(
+                                             sport=4500,
+                                             dport=4500))
 
         # out2in - from public network to private
         pkts = self.create_stream_encrypted(
 
         # out2in - from public network to private
         pkts = self.create_stream_encrypted(
-            self.pg0.remote_mac, self.pg0.local_mac,
-            self.pg0.remote_ip4, self.pg1.remote_ip4, remote_tun_sa)
+            self.tun_if.remote_mac, self.tun_if.local_mac,
+            self.tun_if.remote_ip4, self.pg1.remote_ip4, vpp_tun_sa)
         self.logger.info(ppc("Sending packets:", pkts))
         self.logger.info(ppc("Sending packets:", pkts))
-        self.pg0.add_stream(pkts)
+        self.tun_if.add_stream(pkts)
         self.pg_enable_capture(self.pg_interfaces)
         self.pg_start()
         capture = self.pg1.get_capture(len(pkts))
         self.pg_enable_capture(self.pg_interfaces)
         self.pg_start()
         capture = self.pg1.get_capture(len(pkts))
Vector Packet Processing