from scapy.layers.l2 import ARP
from scapy.layers.inet6 import ICMPv6ND_NS, ICMPv6ND_NA, IPv6

from framework import VppTestCase
from config import config

import unittest

""" TestArping is a subclass of  VPPTestCase classes.

Basic test for sanity check of arping.

"""


@unittest.skipIf("arping" in config.excluded_plugins, "Exclude Arping plugin tests")
class TestArping(VppTestCase):
    """Arping Test Case"""

    @classmethod
    def setUpClass(cls):
        super(TestArping, cls).setUpClass()
        try:
            cls.create_pg_interfaces(range(2))
            cls.interfaces = list(cls.pg_interfaces)

            for i in cls.interfaces:
                i.admin_up()
                i.config_ip4()
                i.config_ip6()
                i.disable_ipv6_ra()
                i.resolve_arp()
                i.resolve_ndp()
        except Exception:
            super(TestArping, cls).tearDownClass()
            raise

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

    def tearDown(self):
        super(TestArping, self).tearDown()

    def show_commands_at_teardown(self):
        self.logger.info(self.vapi.cli("show hardware"))

    def verify_arping_request(self, p, src, dst):
        arp = p[ARP]
        self.assertEqual(arp.hwtype, 0x0001)
        self.assertEqual(arp.ptype, 0x0800)
        self.assertEqual(arp.hwlen, 6)
        self.assertEqual(arp.op, 1)
        self.assertEqual(arp.psrc, src)
        self.assertEqual(arp.pdst, dst)

    def verify_arping_ip6_ns(self, p, src, dst):
        icmpv6 = p[ICMPv6ND_NS]
        self.assertEqual(icmpv6.type, 135)
        self.assertEqual(icmpv6.tgt, dst)
        ipv6 = p[IPv6]
        self.assertEqual(src, ipv6.src)

    def verify_arping_ip6_na(self, p, src, dst):
        icmpv6 = p[ICMPv6ND_NA]
        self.assertEqual(icmpv6.type, 136)
        self.assertEqual(icmpv6.tgt, dst)
        ipv6 = p[IPv6]
        self.assertEqual(src, ipv6.src)

    def test_arping_ip4_arp_request_cli(self):
        """arping IP4 arp request CLI test"""
        try:
            self.pg_enable_capture(self.pg_interfaces)
            self.pg_start()
            remote_ip4 = self.pg1.remote_ip4

            ping_cmd = "arping " + remote_ip4 + "pg1 repeat 5 interval 0.1"
            ret = self.vapi.cli(ping_cmd)
            self.logger.info(ret)

            ping_cmd = "arping " + remote_ip4 + "pg1"
            ret = self.vapi.cli(ping_cmd)
            self.logger.info(ret)

            out = self.pg1.get_capture(6)
            for p in out:
                self.verify_arping_request(p, self.pg1.local_ip4, self.pg1.remote_ip4)
        finally:
            self.vapi.cli("show error")

    def test_arping_ip4_garp_cli(self):
        """arping ip4 gratuitous arp CLI test"""
        try:
            self.pg_enable_capture(self.pg_interfaces)
            self.pg_start()

            ping_cmd = (
                "arping gratuitous" + self.pg1.local_ip4 + "pg1 repeat 5 interval 0.1"
            )
            ret = self.vapi.cli(ping_cmd)
            self.logger.info(ret)

            ping_cmd = "arping gratuitous" + self.pg1.local_ip4 + "pg1"
            ret = self.vapi.cli(ping_cmd)
            self.logger.info(ret)

            out = self.pg1.get_capture(6)
            for p in out:
                self.verify_arping_request(p, self.pg1.local_ip4, self.pg1.local_ip4)
        finally:
            self.vapi.cli("show error")

    def test_arping_ip4_arp_request_api(self):
        """arping ip4 arp request API test"""
        try:
            self.pg_enable_capture(self.pg_interfaces)
            self.pg_start()
            remote_ip4 = self.pg1.remote_ip4

            ret = self.vapi.arping(
                address=remote_ip4,
                sw_if_index=self.pg1.sw_if_index,
                is_garp=0,
                repeat=5,
                interval=0.1,
            )
            self.logger.info(ret)

            ret = self.vapi.arping(
                address=remote_ip4, sw_if_index=self.pg1.sw_if_index, is_garp=0
            )
            self.logger.info(ret)

            out = self.pg1.get_capture(6)
            for p in out:
                self.verify_arping_request(p, self.pg1.local_ip4, self.pg1.remote_ip4)
        finally:
            self.vapi.cli("show error")

    def test_arping_ip4_garp_api(self):
        """arping ip4 gratuitous arp API test"""
        try:
            self.pg_enable_capture(self.pg_interfaces)
            self.pg_start()

            ret = self.vapi.arping(
                address=self.pg1.local_ip4,
                sw_if_index=self.pg1.sw_if_index,
                is_garp=1,
                repeat=5,
                interval=0.1,
            )
            self.logger.info(ret)

            ret = self.vapi.arping(
                address=self.pg1.local_ip4, sw_if_index=self.pg1.sw_if_index, is_garp=1
            )
            self.logger.info(ret)

            out = self.pg1.get_capture(6)
            for p in out:
                self.verify_arping_request(p, self.pg1.local_ip4, self.pg1.local_ip4)
        finally:
            self.vapi.cli("show error")

    def test_arping_ip6_ns_cli(self):
        """arping IP6 neighbor solicitation CLI test"""
        try:
            self.pg_enable_capture(self.pg_interfaces)
            self.pg_start()
            remote_ip6 = self.pg1.remote_ip6

            ping_cmd = "arping " + remote_ip6 + "pg1 repeat 5 interval 0.1"
            ret = self.vapi.cli(ping_cmd)
            self.logger.info(ret)

            ping_cmd = "arping " + remote_ip6 + "pg1"
            ret = self.vapi.cli(ping_cmd)
            self.logger.info(ret)

            out = self.pg1.get_capture(6)
            for p in out:
                self.verify_arping_ip6_ns(p, self.pg1.local_ip6, self.pg1.remote_ip6)
        finally:
            self.vapi.cli("show error")

    def test_arping_ip6_ns_api(self):
        """arping ip6 neighbor solicitation API test"""
        try:
            self.pg_enable_capture(self.pg_interfaces)
            self.pg_start()
            remote_ip6 = self.pg1.remote_ip6

            ret = self.vapi.arping(
                address=remote_ip6,
                sw_if_index=self.pg1.sw_if_index,
                is_garp=0,
                repeat=5,
                interval=0.1,
            )
            self.logger.info(ret)

            ret = self.vapi.arping(
                address=remote_ip6, sw_if_index=self.pg1.sw_if_index, is_garp=0
            )
            self.logger.info(ret)

            out = self.pg1.get_capture(6)
            for p in out:
                self.verify_arping_ip6_ns(p, self.pg1.local_ip6, self.pg1.remote_ip6)
        finally:
            self.vapi.cli("show error")

    def test_arping_ip6_na_cli(self):
        """arping ip6 neighbor advertisement CLI test"""
        try:
            self.pg_enable_capture(self.pg_interfaces)
            self.pg_start()

            ping_cmd = (
                "arping gratuitous" + self.pg1.local_ip6 + "pg1 repeat 5 interval 0.1"
            )
            ret = self.vapi.cli(ping_cmd)
            self.logger.info(ret)

            ping_cmd = "arping gratuitous" + self.pg1.local_ip6 + "pg1"
            ret = self.vapi.cli(ping_cmd)
            self.logger.info(ret)

            out = self.pg1.get_capture(6)
            for p in out:
                self.verify_arping_ip6_na(p, self.pg1.local_ip6, self.pg1.local_ip6)
        finally:
            self.vapi.cli("show error")

    def test_arping_ip6_na_api(self):
        """arping ip6 neighbor advertisement API test"""
        try:
            self.pg_enable_capture(self.pg_interfaces)
            self.pg_start()

            ret = self.vapi.arping(
                address=self.pg1.local_ip6,
                sw_if_index=self.pg1.sw_if_index,
                is_garp=1,
                repeat=5,
                interval=0.1,
            )
            self.logger.info(ret)

            ret = self.vapi.arping(
                address=self.pg1.local_ip6, sw_if_index=self.pg1.sw_if_index, is_garp=1
            )
            self.logger.info(ret)

            out = self.pg1.get_capture(6)
            for p in out:
                self.verify_arping_ip6_na(p, self.pg1.local_ip6, self.pg1.local_ip6)
        finally:
            self.vapi.cli("show error")


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