tests/avocado/vnc.py

   1 # Simple functional tests for VNC functionality
   2 #
   3 # Copyright (c) 2018 Red Hat, Inc.
   4 #
   5 # Author:
   6 #  Cleber Rosa <crosa@redhat.com>
   7 #
   8 # This work is licensed under the terms of the GNU GPL, version 2 or
   9 # later.  See the COPYING file in the top-level directory.
  10
  11 import socket
  12 from typing import List
  13
  14 from avocado_qemu import QemuSystemTest
  15
  16
  17 VNC_ADDR = '127.0.0.1'
  18 VNC_PORT_START = 32768
  19 VNC_PORT_END = VNC_PORT_START + 1024
  20
  21
  22 def check_bind(port: int) -> bool:
  23     with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
  24         try:
  25             sock.bind((VNC_ADDR, port))
  26         except OSError:
  27             return False
  28
  29     return True
  30
  31
  32 def check_connect(port: int) -> bool:
  33     with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
  34         try:
  35             sock.connect((VNC_ADDR, port))
  36         except ConnectionRefusedError:
  37             return False
  38
  39     return True
  40
  41
  42 def find_free_ports(count: int) -> List[int]:
  43     result = []
  44     for port in range(VNC_PORT_START, VNC_PORT_END):
  45         if check_bind(port):
  46             result.append(port)
  47             if len(result) >= count:
  48                 break
  49     assert len(result) == count
  50     return result
  51
  52
  53 class Vnc(QemuSystemTest):
  54     """
  55     :avocado: tags=vnc,quick
  56     :avocado: tags=machine:none
  57     """
  58     def test_no_vnc(self):
  59         self.vm.add_args('-nodefaults', '-S')
  60         self.vm.launch()
  61         self.assertFalse(self.vm.qmp('query-vnc')['return']['enabled'])
  62
  63     def test_no_vnc_change_password(self):
  64         self.vm.add_args('-nodefaults', '-S')
  65         self.vm.launch()
  66         self.assertFalse(self.vm.qmp('query-vnc')['return']['enabled'])
  67         set_password_response = self.vm.qmp('change-vnc-password',
  68                                             password='new_password')
  69         self.assertIn('error', set_password_response)
  70         self.assertEqual(set_password_response['error']['class'],
  71                          'GenericError')
  72         self.assertEqual(set_password_response['error']['desc'],
  73                          'Could not set password')
  74
  75     def test_change_password_requires_a_password(self):
  76         self.vm.add_args('-nodefaults', '-S', '-vnc', ':0')
  77         self.vm.launch()
  78         self.assertTrue(self.vm.qmp('query-vnc')['return']['enabled'])
  79         set_password_response = self.vm.qmp('change-vnc-password',
  80                                             password='new_password')
  81         self.assertIn('error', set_password_response)
  82         self.assertEqual(set_password_response['error']['class'],
  83                          'GenericError')
  84         self.assertEqual(set_password_response['error']['desc'],
  85                          'Could not set password')
  86
  87     def test_change_password(self):
  88         self.vm.add_args('-nodefaults', '-S', '-vnc', ':0,password=on')
  89         self.vm.launch()
  90         self.assertTrue(self.vm.qmp('query-vnc')['return']['enabled'])
  91         self.vm.cmd('change-vnc-password',
  92                     password='new_password')
  93
  94     def test_change_listen(self):
  95         a, b, c = find_free_ports(3)
  96         self.assertFalse(check_connect(a))
  97         self.assertFalse(check_connect(b))
  98         self.assertFalse(check_connect(c))
  99
 100         self.vm.add_args('-nodefaults', '-S', '-vnc', f'{VNC_ADDR}:{a - 5900}')
 101         self.vm.launch()
 102         self.assertEqual(self.vm.qmp('query-vnc')['return']['service'], str(a))
 103         self.assertTrue(check_connect(a))
 104         self.assertFalse(check_connect(b))
 105         self.assertFalse(check_connect(c))
 106
 107         self.vm.cmd('display-update', type='vnc',
 108                     addresses=[{'type': 'inet', 'host': VNC_ADDR,
 109                                 'port': str(b)},
 110                                {'type': 'inet', 'host': VNC_ADDR,
 111                                 'port': str(c)}])
 112         self.assertEqual(self.vm.qmp('query-vnc')['return']['service'], str(b))
 113         self.assertFalse(check_connect(a))
 114         self.assertTrue(check_connect(b))
 115         self.assertTrue(check_connect(c))