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1#!/usr/bin/env python3
2#
3#  Copyright (c) 2021, The OpenThread Authors.
4#  All rights reserved.
5#
6#  Redistribution and use in source and binary forms, with or without
7#  modification, are permitted provided that the following conditions are met:
8#  1. Redistributions of source code must retain the above copyright
9#     notice, this list of conditions and the following disclaimer.
10#  2. Redistributions in binary form must reproduce the above copyright
11#     notice, this list of conditions and the following disclaimer in the
12#     documentation and/or other materials provided with the distribution.
13#  3. Neither the name of the copyright holder nor the
14#     names of its contributors may be used to endorse or promote products
15#     derived from this software without specific prior written permission.
16#
17#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18#  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19#  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20#  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
21#  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22#  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23#  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24#  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25#  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26#  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27#  POSSIBILITY OF SUCH DAMAGE.
28#
29
30import ipaddress
31import logging
32import unittest
33
34import command
35import config
36import thread_cert
37
38# Test description:
39#   This test verifies when an SRP server restarts, it will listen to a UDP port
40#   that wasn't used in the last time.
41#
42# Topology:
43#
44#   LEADER (SRP client) -- ROUTER (SRP server)
45#
46
47CLIENT = 1
48SERVER = 2
49
50REBOOT_TIMES = 25
51
52
53class SrpServerRebootPort(thread_cert.TestCase):
54    USE_MESSAGE_FACTORY = False
55    SUPPORT_NCP = False
56
57    TOPOLOGY = {
58        CLIENT: {
59            'name': 'SRP_CLIENT',
60            'mode': 'rdn',
61        },
62        SERVER: {
63            'name': 'SRP_SERVER',
64            'mode': 'rdn',
65        },
66    }
67
68    def test(self):
69        client = self.nodes[CLIENT]
70        server = self.nodes[SERVER]
71
72        #
73        # 0. Start the server & client devices.
74        #
75
76        client.srp_server_set_enabled(False)
77        client.start()
78        self.simulator.go(config.LEADER_STARTUP_DELAY)
79        self.assertEqual(client.get_state(), 'leader')
80
81        server.srp_server_set_enabled(True)
82        server.start()
83        self.simulator.go(config.ROUTER_STARTUP_DELAY)
84        self.assertEqual(server.get_state(), 'router')
85
86        #
87        # 1. Enable auto start mode on client and check that server is used.
88        #
89
90        self.assertEqual(client.srp_client_get_state(), 'Disabled')
91        client.srp_client_enable_auto_start_mode()
92        self.assertEqual(client.srp_client_get_auto_start_mode(), 'Enabled')
93        self.simulator.go(2)
94        self.assertEqual(client.srp_client_get_state(), 'Enabled')
95        self.assertTrue(server.has_ipaddr(client.srp_client_get_server_address()))
96
97        #
98        # 2. Reboot the server without any service registered. The server should
99        # listen to the same port after the reboot.
100        #
101        old_port = server.get_srp_server_port()
102        server.srp_server_set_enabled(False)
103        self.simulator.go(5)
104        server.srp_server_set_enabled(True)
105        self.simulator.go(5)
106        self.assertEqual(old_port, server.get_srp_server_port())
107
108        #
109        # 3. Register a service
110        #
111        client.srp_client_set_host_name('my-host')
112        client.srp_client_set_host_address('2001::1')
113        client.srp_client_add_service('my-service', '_ipps._tcp', 12345, 0, 0, ['abc', 'def=', 'xyz=XYZ'])
114        self.simulator.go(5)
115        self.check_host_and_service(server, client, '2001::1')
116
117        ports = [server.get_srp_server_port()]
118
119        # Reboot the SRP server several times
120        for i in range(REBOOT_TIMES):
121            #
122            # 4. Disable server and check client is stopped/disabled.
123            #
124            old_port = server.get_srp_server_port()
125            server.srp_server_set_enabled(False)
126            self.simulator.go(5)
127
128            #
129            # 5. Enable server and check client starts again. Verify that the
130            # server is using a different port, and the service have been
131            # re-registered.
132            #
133            server.srp_server_set_enabled(True)
134            self.simulator.go(5)
135            self.assertEqual(client.srp_client_get_state(), 'Enabled')
136            self.assertEqual(client.srp_client_get_server_address(), server.get_mleid())
137            self.assertNotEqual(old_port, server.get_srp_server_port())
138            self.check_host_and_service(server, client, '2001::1')
139            ports.append(server.get_srp_server_port())
140        logging.info(f'ports = {ports}')
141
142    def check_host_and_service(self, server, client, host_addr):
143        # Check that we have properly registered host and service instance.
144        # Originally used in test_srp_register_single_service.py.
145
146        client_services = client.srp_client_get_services()
147        print(client_services)
148        self.assertEqual(len(client_services), 1)
149        client_service = client_services[0]
150
151        # Verify that the client possesses correct service resources.
152        self.assertEqual(client_service['instance'], 'my-service')
153        self.assertEqual(client_service['name'], '_ipps._tcp')
154        self.assertEqual(int(client_service['port']), 12345)
155        self.assertEqual(int(client_service['priority']), 0)
156        self.assertEqual(int(client_service['weight']), 0)
157
158        # Verify that the client received a SUCCESS response for the server.
159        self.assertEqual(client_service['state'], 'Registered')
160
161        server_services = server.srp_server_get_services()
162        self.assertEqual(len(server_services), 1)
163        server_service = server_services[0]
164
165        # Verify that the server accepted the SRP registration and stores
166        # the same service resources.
167        self.assertEqual(server_service['deleted'], 'false')
168        self.assertEqual(server_service['instance'], client_service['instance'])
169        self.assertEqual(server_service['name'], client_service['name'])
170        self.assertEqual(server_service['subtypes'], '(null)')
171        self.assertEqual(int(server_service['port']), int(client_service['port']))
172        self.assertEqual(int(server_service['priority']), int(client_service['priority']))
173        self.assertEqual(int(server_service['weight']), int(client_service['weight']))
174        # We output value of TXT entry as HEX string.
175        print(server_service['TXT'])
176        self.assertEqual(server_service['TXT'], ['abc', 'def=', 'xyz=58595a'])
177        self.assertEqual(server_service['host'], 'my-host')
178
179        server_hosts = server.srp_server_get_hosts()
180        print(server_hosts)
181        self.assertEqual(len(server_hosts), 1)
182        server_host = server_hosts[0]
183
184        self.assertEqual(server_host['deleted'], 'false')
185        self.assertEqual(server_host['fullname'], server_service['host_fullname'])
186        self.assertEqual(len(server_host['addresses']), 1)
187        self.assertEqual(ipaddress.ip_address(server_host['addresses'][0]), ipaddress.ip_address(host_addr))
188
189
190if __name__ == '__main__':
191    unittest.main()
192