1  import unittest
       2  from test import support
       3  from test.support import import_helper
       4  from test.support import socket_helper
       5  import smtplib
       6  import socket
       7  
       8  ssl = import_helper.import_module("ssl")
       9  
      10  support.requires("network")
      11  
      12  def check_ssl_verifiy(host, port):
      13      context = ssl.create_default_context()
      14      with socket.create_connection((host, port)) as sock:
      15          try:
      16              sock = context.wrap_socket(sock, server_hostname=host)
      17          except Exception:
      18              return False
      19          else:
      20              sock.close()
      21              return True
      22  
      23  
      24  class ESC[4;38;5;81mSmtpTest(ESC[4;38;5;149munittestESC[4;38;5;149m.ESC[4;38;5;149mTestCase):
      25      testServer = 'smtp.gmail.com'
      26      remotePort = 587
      27  
      28      def test_connect_starttls(self):
      29          support.get_attribute(smtplib, 'SMTP_SSL')
      30          context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
      31          context.check_hostname = False
      32          context.verify_mode = ssl.CERT_NONE
      33          with socket_helper.transient_internet(self.testServer):
      34              server = smtplib.SMTP(self.testServer, self.remotePort)
      35              try:
      36                  server.starttls(context=context)
      37              except smtplib.SMTPException as e:
      38                  if e.args[0] == 'STARTTLS extension not supported by server.':
      39                      unittest.skip(e.args[0])
      40                  else:
      41                      raise
      42              server.ehlo()
      43              server.quit()
      44  
      45  
      46  class ESC[4;38;5;81mSmtpSSLTest(ESC[4;38;5;149munittestESC[4;38;5;149m.ESC[4;38;5;149mTestCase):
      47      testServer = 'smtp.gmail.com'
      48      remotePort = 465
      49  
      50      def test_connect(self):
      51          support.get_attribute(smtplib, 'SMTP_SSL')
      52          with socket_helper.transient_internet(self.testServer):
      53              server = smtplib.SMTP_SSL(self.testServer, self.remotePort)
      54              server.ehlo()
      55              server.quit()
      56  
      57      def test_connect_default_port(self):
      58          support.get_attribute(smtplib, 'SMTP_SSL')
      59          with socket_helper.transient_internet(self.testServer):
      60              server = smtplib.SMTP_SSL(self.testServer)
      61              server.ehlo()
      62              server.quit()
      63  
      64      @support.requires_resource('walltime')
      65      def test_connect_using_sslcontext(self):
      66          context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
      67          context.check_hostname = False
      68          context.verify_mode = ssl.CERT_NONE
      69          support.get_attribute(smtplib, 'SMTP_SSL')
      70          with socket_helper.transient_internet(self.testServer):
      71              server = smtplib.SMTP_SSL(self.testServer, self.remotePort, context=context)
      72              server.ehlo()
      73              server.quit()
      74  
      75      def test_connect_using_sslcontext_verified(self):
      76          with socket_helper.transient_internet(self.testServer):
      77              can_verify = check_ssl_verifiy(self.testServer, self.remotePort)
      78              if not can_verify:
      79                  self.skipTest("SSL certificate can't be verified")
      80  
      81          support.get_attribute(smtplib, 'SMTP_SSL')
      82          context = ssl.create_default_context()
      83          with socket_helper.transient_internet(self.testServer):
      84              server = smtplib.SMTP_SSL(self.testServer, self.remotePort, context=context)
      85              server.ehlo()
      86              server.quit()
      87  
      88  
      89  if __name__ == "__main__":
      90      unittest.main()