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/*
 * Copyright (c) 2015-2016 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

option version = "1.0.0";

/** \brief l2tpv3 tunnel interface create request
    @param client_index - opaque cookie to identify the sender
    @param context - sender context, to match reply w/ request
    @param client_address - remote client tunnel ip address
    @param client_address - local tunnel ip address
    @param is_ipv6 - ipv6 if non-zero, else ipv4
    @param local_session_id - local tunnel session id
    @param remote_session_id - remote tunnel session id
    @param local_cookie - local tunnel cookie
    @param l2_sublayer_present - l2 sublayer is present in packets if non-zero
    @param encap_vrf_id - fib identifier used for outgoing encapsulated packets
*/
define l2tpv3_create_tunnel
{
  u32 client_index;
  u32 context;
  u8 client_address[16];
  u8 our_address[16];
  u8 is_ipv6;
  u32 local_session_id;
  u32 remote_session_id;
  u64 local_cookie;
  u64 remote_cookie;
  u8 l2_sublayer_present;
  u32 encap_vrf_id;
};

/** \brief l2tpv3 tunnel interface create response
    @param context - sender context, to match reply w/ request
    @param retval - return code for the request
    @param sw_if_index - index of the new tunnel interface
*/
define l2tpv3_create_tunnel_reply
{
  u32 context;
  i32 retval;
  u32 sw_if_index;
};

autoreply define l2tpv3_set_tunnel_cookies
{
  u32 client_index;
  u32 context;
  u32 sw_if_index;
  u64 new_local_cookie;
  u64 new_remote_cookie;
};

define sw_if_l2tpv3_tunnel_details
{
  u32 context;
  u32 sw_if_index;
  u8 interface_name[64];
  u8 client_address[16];
  u8 our_address[16];
  u32 local_session_id;
  u32 remote_session_id;
  u64 local_cookie[2];
  u64 remote_cookie;
  u8 l2_sublayer_present;
};

define sw_if_l2tpv3_tunnel_dump
{
  u32 client_index;
  u32 context;
};

autoreply define l2tpv3_interface_enable_disable
{
  u32 client_index;
  u32 context;
  u8 enable_disable;
  u32 sw_if_index;
};

autoreply define l2tpv3_set_lookup_key
{
  u32 client_index;
  u32 context;
  /* 0 = ip6 src_address, 1 = ip6 dst_address, 2 = session_id */
  u8 key;
};

/*
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */
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#!/usr/bin/env python3

import binascii
import socket
import unittest

from framework import VppTestCase, VppTestRunner

from scapy.packet import Raw
from scapy.layers.l2 import Ether
from scapy.layers.inet import IP, UDP, TCP
from util import ppp
from template_classifier import TestClassifier
from vpp_ip_route import VppIpRoute, VppRoutePath
from vpp_ip import INVALID_INDEX


# Tests split to different test case classes because of issue reported in
# ticket VPP-1336
class TestClassifierIP(TestClassifier):
    """ Classifier IP Test Case """

    @classmethod
    def setUpClass(cls):
        super(TestClassifierIP, cls).setUpClass()

    @classmethod
    def tearDownClass(cls):
        super(TestClassifierIP, cls).tearDownClass()

    def test_iacl_src_ip(self):
        """ Source IP iACL test

        Test scenario for basic IP ACL with source IP
            - Create IPv4 stream for pg0 -> pg1 interface.
            - Create iACL with source IP address.
            - Send and verify received packets on pg1 interface.
        """

        # Basic iACL testing with source IP
        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes)
        self.pg0.add_stream(pkts)

        key = 'ip_src'
        self.create_classify_table(key, self.build_ip_mask(src_ip='ffffffff'))
        self.create_classify_session(
            self.acl_tbl_idx.get(key),
            self.build_ip_match(src_ip=self.pg0.remote_ip4))
        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
        self.acl_active_table = key

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        pkts = self.pg1.get_capture(len(pkts))
        self.verify_capture(self.pg1, pkts)
        self.pg0.assert_nothing_captured(remark="packets forwarded")
        self.pg2.assert_nothing_captured(remark="packets forwarded")
        self.pg3.assert_nothing_captured(remark="packets forwarded")

    def test_iacl_dst_ip(self):
        """ Destination IP iACL test

        Test scenario for basic IP ACL with destination IP
            - Create IPv4 stream for pg0 -> pg1 interface.
            - Create iACL with destination IP address.
            - Send and verify received packets on pg1 interface.
        """

        # Basic iACL testing with destination IP
        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes)
        self.pg0.add_stream(pkts)

        key = 'ip_dst'
        self.create_classify_table(key, self.build_ip_mask(dst_ip='ffffffff'))
        self.create_classify_session(
            self.acl_tbl_idx.get(key),
            self.build_ip_match(dst_ip=self.pg1.remote_ip4))
        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
        self.acl_active_table = key

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        pkts = self.pg1.get_capture(len(pkts))
        self.verify_capture(self.pg1, pkts)
        self.pg0.assert_nothing_captured(remark="packets forwarded")
        self.pg2.assert_nothing_captured(remark="packets forwarded")
        self.pg3.assert_nothing_captured(remark="packets forwarded")

    def test_iacl_src_dst_ip(self):
        """ Source and destination IP iACL test

        Test scenario for basic IP ACL with source and destination IP
            - Create IPv4 stream for pg0 -> pg1 interface.
            - Create iACL with source and destination IP addresses.
            - Send and verify received packets on pg1 interface.
        """

        # Basic iACL testing with source and destination IP
        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes)
        self.pg0.add_stream(pkts)

        key = 'ip'
        self.create_classify_table(
            key, self.build_ip_mask(src_ip='ffffffff', dst_ip='ffffffff'))
        self.create_classify_session(
            self.acl_tbl_idx.get(key),
            self.build_ip_match(src_ip=self.pg0.remote_ip4,
                                dst_ip=self.pg1.remote_ip4))
        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
        self.acl_active_table = key

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        pkts = self.pg1.get_capture(len(pkts))
        self.verify_capture(self.pg1, pkts)
        self.pg0.assert_nothing_captured(remark="packets forwarded")
        self.pg2.assert_nothing_captured(remark="packets forwarded")
        self.pg3.assert_nothing_captured(remark="packets forwarded")


class TestClassifierUDP(TestClassifier):
    """ Classifier UDP proto Test Case """

    @classmethod
    def setUpClass(cls):
        super(TestClassifierUDP, cls).setUpClass()

    @classmethod
    def tearDownClass(cls):
        super(TestClassifierUDP, cls).tearDownClass()

    def test_iacl_proto_udp(self):
        """ UDP protocol iACL test

        Test scenario for basic protocol ACL with UDP protocol
            - Create IPv4 stream for pg0 -> pg1 interface.
            - Create iACL with UDP IP protocol.
            - Send and verify received packets on pg1 interface.
        """

        # Basic iACL testing with UDP protocol
        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes)
        self.pg0.add_stream(pkts)

        key = 'proto_udp'
        self.create_classify_table(key, self.build_ip_mask(proto='ff'))
        self.create_classify_session(
            self.acl_tbl_idx.get(key),
            self.build_ip_match(proto=socket.IPPROTO_UDP))
        self.input_acl_set_interface(
            self.pg0, self.acl_tbl_idx.get(key))
        self.acl_active_table = key

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        pkts = self.pg1.get_capture(len(pkts))
        self.verify_capture(self.pg1, pkts)
        self.pg0.assert_nothing_captured(remark="packets forwarded")
        self.pg2.assert_nothing_captured(remark="packets forwarded")
        self.pg3.assert_nothing_captured(remark="packets forwarded")

    def test_iacl_proto_udp_sport(self):
        """ UDP source port iACL test

        Test scenario for basic protocol ACL with UDP and sport
            - Create IPv4 stream for pg0 -> pg1 interface.
            - Create iACL with UDP IP protocol and defined sport.
            - Send and verify received packets on pg1 interface.
        """

        # Basic iACL testing with UDP and sport
        sport = 38
        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
                                  UDP(sport=sport, dport=5678))
        self.pg0.add_stream(pkts)

        key = 'proto_udp_sport'
        self.create_classify_table(
            key, self.build_ip_mask(proto='ff', src_port='ffff'))
        self.create_classify_session(
            self.acl_tbl_idx.get(key),
            self.build_ip_match(proto=socket.IPPROTO_UDP, src_port=sport))
        self.input_acl_set_interface(
            self.pg0, self.acl_tbl_idx.get(key))
        self.acl_active_table = key

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        pkts = self.pg1.get_capture(len(pkts))
        self.verify_capture(self.pg1, pkts)
        self.pg0.assert_nothing_captured(remark="packets forwarded")
        self.pg2.assert_nothing_captured(remark="packets forwarded")
        self.pg3.assert_nothing_captured(remark="packets forwarded")

    def test_iacl_proto_udp_dport(self):
        """ UDP destination port iACL test

        Test scenario for basic protocol ACL with UDP and dport
            - Create IPv4 stream for pg0 -> pg1 interface.
            - Create iACL with UDP IP protocol and defined dport.
            - Send and verify received packets on pg1 interface.
        """

        # Basic iACL testing with UDP and dport
        dport = 427
        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
                                  UDP(sport=1234, dport=dport))
        self.pg0.add_stream(pkts)

        key = 'proto_udp_dport'
        self.create_classify_table(
            key, self.build_ip_mask(proto='ff', dst_port='ffff'))
        self.create_classify_session(
            self.acl_tbl_idx.get(key),
            self.build_ip_match(proto=socket.IPPROTO_UDP, dst_port=dport))
        self.input_acl_set_interface(
            self.pg0, self.acl_tbl_idx.get(key))
        self.acl_active_table = key

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        pkts = self.pg1.get_capture(len(pkts))
        self.verify_capture(self.pg1, pkts)
        self.pg0.assert_nothing_captured(remark="packets forwarded")
        self.pg2.assert_nothing_captured(remark="packets forwarded")
        self.pg3.assert_nothing_captured(remark="packets forwarded")

    def test_iacl_proto_udp_sport_dport(self):
        """ UDP source and destination ports iACL test

        Test scenario for basic protocol ACL with UDP and sport and dport
            - Create IPv4 stream for pg0 -> pg1 interface.
            - Create iACL with UDP IP protocol and defined sport and dport.
            - Send and verify received packets on pg1 interface.
        """

        # Basic iACL testing with UDP and sport and dport
        sport = 13720
        dport = 9080
        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
                                  UDP(sport=sport, dport=dport))
        self.pg0.add_stream(pkts)

        key = 'proto_udp_ports'
        self.create_classify_table(
            key,
            self.build_ip_mask(proto='ff', src_port='ffff', dst_port='ffff'))
        self.create_classify_session(
            self.acl_tbl_idx.get(key),
            self.build_ip_match(proto=socket.IPPROTO_UDP, src_port=sport,
                                dst_port=dport))
        self.input_acl_set_interface(
            self.pg0, self.acl_tbl_idx.get(key))
        self.acl_active_table = key

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        pkts = self.pg1.get_capture(len(pkts))
        self.verify_capture(self.pg1, pkts)
        self.pg0.assert_nothing_captured(remark="packets forwarded")
        self.pg2.assert_nothing_captured(remark="packets forwarded")
        self.pg3.assert_nothing_captured(remark="packets forwarded")


class TestClassifierTCP(TestClassifier):
    """ Classifier TCP proto Test Case """

    @classmethod
    def setUpClass(cls):
        super(TestClassifierTCP, cls).setUpClass()

    @classmethod
    def tearDownClass(cls):
        super(TestClassifierTCP, cls).tearDownClass()

    def test_iacl_proto_tcp(self):
        """ TCP protocol iACL test

        Test scenario for basic protocol ACL with TCP protocol
            - Create IPv4 stream for pg0 -> pg1 interface.
            - Create iACL with TCP IP protocol.
            - Send and verify received packets on pg1 interface.
        """

        # Basic iACL testing with TCP protocol
        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
                                  TCP(sport=1234, dport=5678))
        self.pg0.add_stream(pkts)

        key = 'proto_tcp'
        self.create_classify_table(key, self.build_ip_mask(proto='ff'))
        self.create_classify_session(
            self.acl_tbl_idx.get(key),
            self.build_ip_match(proto=socket.IPPROTO_TCP))
        self.input_acl_set_interface(
            self.pg0, self.acl_tbl_idx.get(key))
        self.acl_active_table = key

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        pkts = self.pg1.get_capture(len(pkts))
        self.verify_capture(self.pg1, pkts, TCP)
        self.pg0.assert_nothing_captured(remark="packets forwarded")
        self.pg2.assert_nothing_captured(remark="packets forwarded")
        self.pg3.assert_nothing_captured(remark="packets forwarded")

    def test_iacl_proto_tcp_sport(self):
        """ TCP source port iACL test

        Test scenario for basic protocol ACL with TCP and sport
            - Create IPv4 stream for pg0 -> pg1 interface.
            - Create iACL with TCP IP protocol and defined sport.
            - Send and verify received packets on pg1 interface.
        """

        # Basic iACL testing with TCP and sport
        sport = 38
        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
                                  TCP(sport=sport, dport=5678))
        self.pg0.add_stream(pkts)

        key = 'proto_tcp_sport'
        self.create_classify_table(
            key, self.build_ip_mask(proto='ff', src_port='ffff'))
        self.create_classify_session(
            self.acl_tbl_idx.get(key),
            self.build_ip_match(proto=socket.IPPROTO_TCP, src_port=sport))
        self.input_acl_set_interface(
            self.pg0, self.acl_tbl_idx.get(key))
        self.acl_active_table = key

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        pkts = self.pg1.get_capture(len(pkts))
        self.verify_capture(self.pg1, pkts, TCP)
        self.pg0.assert_nothing_captured(remark="packets forwarded")
        self.pg2.assert_nothing_captured(remark="packets forwarded")
        self.pg3.assert_nothing_captured(remark="packets forwarded")

    def test_iacl_proto_tcp_dport(self):
        """ TCP destination port iACL test

        Test scenario for basic protocol ACL with TCP and dport
            - Create IPv4 stream for pg0 -> pg1 interface.
            - Create iACL with TCP IP protocol and defined dport.
            - Send and verify received packets on pg1 interface.
        """

        # Basic iACL testing with TCP and dport
        dport = 427
        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
                                  TCP(sport=1234, dport=dport))
        self.pg0.add_stream(pkts)

        key = 'proto_tcp_sport'
        self.create_classify_table(
            key, self.build_ip_mask(proto='ff', dst_port='ffff'))
        self.create_classify_session(
            self.acl_tbl_idx.get(key),
            self.build_ip_match(proto=socket.IPPROTO_TCP, dst_port=dport))
        self.input_acl_set_interface(
            self.pg0, self.acl_tbl_idx.get(key))
        self.acl_active_table = key

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        pkts = self.pg1.get_capture(len(pkts))
        self.verify_capture(self.pg1, pkts, TCP)
        self.pg0.assert_nothing_captured(remark="packets forwarded")
        self.pg2.assert_nothing_captured(remark="packets forwarded")
        self.pg3.assert_nothing_captured(remark="packets forwarded")

    def test_iacl_proto_tcp_sport_dport(self):
        """ TCP source and destination ports iACL test

        Test scenario for basic protocol ACL with TCP and sport and dport
            - Create IPv4 stream for pg0 -> pg1 interface.
            - Create iACL with TCP IP protocol and defined sport and dport.
            - Send and verify received packets on pg1 interface.
        """

        # Basic iACL testing with TCP and sport and dport
        sport = 13720
        dport = 9080
        pkts = self.create_stream(self.pg0, self.pg1, self.pg_if_packet_sizes,
                                  TCP(sport=sport, dport=dport))
        self.pg0.add_stream(pkts)

        key = 'proto_tcp_ports'
        self.create_classify_table(
            key,
            self.build_ip_mask(proto='ff', src_port='ffff', dst_port='ffff'))
        self.create_classify_session(
            self.acl_tbl_idx.get(key),
            self.build_ip_match(proto=socket.IPPROTO_TCP, src_port=sport,
                                dst_port=dport))
        self.input_acl_set_interface(
            self.pg0, self.acl_tbl_idx.get(key))
        self.acl_active_table = key

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        pkts = self.pg1.get_capture(len(pkts))
        self.verify_capture(self.pg1, pkts, TCP)
        self.pg0.assert_nothing_captured(remark="packets forwarded")
        self.pg2.assert_nothing_captured(remark="packets forwarded")
        self.pg3.assert_nothing_captured(remark="packets forwarded")


class TestClassifierIPOut(TestClassifier):
    """ Classifier output IP Test Case """

    @classmethod
    def setUpClass(cls):
        super(TestClassifierIPOut, cls).setUpClass()

    @classmethod
    def tearDownClass(cls):
        super(TestClassifierIPOut, cls).tearDownClass()

    def test_acl_ip_out(self):
        """ Output IP ACL test

        Test scenario for basic IP ACL with source IP
            - Create IPv4 stream for pg1 -> pg0 interface.
            - Create ACL with source IP address.
            - Send and verify received packets on pg0 interface.
        """

        # Basic oACL testing with source IP
        pkts = self.create_stream(self.pg1, self.pg0, self.pg_if_packet_sizes)
        self.pg1.add_stream(pkts)

        key = 'ip_out'
        self.create_classify_table(
            key, self.build_ip_mask(src_ip='ffffffff'), data_offset=0)
        self.create_classify_session(
            self.acl_tbl_idx.get(key),
            self.build_ip_match(src_ip=self.pg1.remote_ip4))
        self.output_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
        self.acl_active_table = key

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        pkts = self.pg0.get_capture(len(pkts))
        self.verify_capture(self.pg0, pkts)
        self.pg1.assert_nothing_captured(remark="packets forwarded")
        self.pg2.assert_nothing_captured(remark="packets forwarded")
        self.pg3.assert_nothing_captured(remark="packets forwarded")


class TestClassifierMAC(TestClassifier):
    """ Classifier MAC Test Case """

    @classmethod
    def setUpClass(cls):
        super(TestClassifierMAC, cls).setUpClass()

    @classmethod
    def tearDownClass(cls):
        super(TestClassifierMAC, cls).tearDownClass()

    def test_acl_mac(self):
        """ MAC ACL test

        Test scenario for basic MAC ACL with source MAC
            - Create IPv4 stream for pg0 -> pg2 interface.
            - Create ACL with source MAC address.
            - Send and verify received packets on pg2 interface.
        """

        # Basic iACL testing with source MAC
        pkts = self.create_stream(self.pg0, self.pg2, self.pg_if_packet_sizes)
        self.pg0.add_stream(pkts)

        key = 'mac'
        self.create_classify_table(
            key, self.build_mac_mask(src_mac='ffffffffffff'), data_offset=-14)
        self.create_classify_session(
            self.acl_tbl_idx.get(key),
            self.build_mac_match(src_mac=self.pg0.remote_mac))
        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))
        self.acl_active_table = key

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        pkts = self.pg2.get_capture(len(pkts))
        self.verify_capture(self.pg2, pkts)
        self.pg0.assert_nothing_captured(remark="packets forwarded")
        self.pg1.assert_nothing_captured(remark="packets forwarded")
        self.pg3.assert_nothing_captured(remark="packets forwarded")


class TestClassifierPBR(TestClassifier):
    """ Classifier PBR Test Case """

    @classmethod
    def setUpClass(cls):
        super(TestClassifierPBR, cls).setUpClass()

    @classmethod
    def tearDownClass(cls):
        super(TestClassifierPBR, cls).tearDownClass()

    def test_acl_pbr(self):
        """ IP PBR test

        Test scenario for PBR with source IP
            - Create IPv4 stream for pg0 -> pg3 interface.
            - Configure PBR fib entry for packet forwarding.
            - Send and verify received packets on pg3 interface.
        """

        # PBR testing with source IP
        pkts = self.create_stream(self.pg0, self.pg3, self.pg_if_packet_sizes)
        self.pg0.add_stream(pkts)

        key = 'pbr'
        self.create_classify_table(key, self.build_ip_mask(src_ip='ffffffff'))
        pbr_option = 1
        # this will create the VRF/table in which we will insert the route
        self.create_classify_session(
            self.acl_tbl_idx.get(key),
            self.build_ip_match(src_ip=self.pg0.remote_ip4),
            pbr_option, self.pbr_vrfid)
        self.assertTrue(self.verify_vrf(self.pbr_vrfid))
        r = VppIpRoute(self, self.pg3.local_ip4, 24,
                       [VppRoutePath(self.pg3.remote_ip4,
                                     INVALID_INDEX)],
                       table_id=self.pbr_vrfid)
        r.add_vpp_config()

        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key))

        self.pg_enable_capture(self.pg_interfaces)
        self.pg_start()

        pkts = self.pg3.get_capture(len(pkts))
        self.verify_capture(self.pg3, pkts)
        self.input_acl_set_interface(self.pg0, self.acl_tbl_idx.get(key), 0)
        self.pg0.assert_nothing_captured(remark="packets forwarded")
        self.pg1.assert_nothing_captured(remark="packets forwarded")
        self.pg2.assert_nothing_captured(remark="packets forwarded")

        # remove the classify session and the route
        r.remove_vpp_config()
        self.create_classify_session(
            self.acl_tbl_idx.get(key),
            self.build_ip_match(src_ip=self.pg0.remote_ip4),
            pbr_option, self.pbr_vrfid, is_add=0)

        # and the table should be gone.
        self.assertFalse(self.verify_vrf(self.pbr_vrfid))

if __name__ == '__main__':
    unittest.main(testRunner=VppTestRunner)