import unittest from test import support from test.support import import_helper from test.support import socket_helper import smtplib import socket ssl = import_helper.import_module("ssl") support.requires("network") def check_ssl_verifiy(host, port): context = ssl.create_default_context() with socket.create_connection((host, port)) as sock: try: sock = context.wrap_socket(sock, server_hostname=host) except Exception: return False else: sock.close() return True class SmtpTest(unittest.TestCase): testServer = 'smtp.gmail.com' remotePort = 587 def test_connect_starttls(self): support.get_attribute(smtplib, 'SMTP_SSL') context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT) context.check_hostname = False context.verify_mode = ssl.CERT_NONE with socket_helper.transient_internet(self.testServer): server = smtplib.SMTP(self.testServer, self.remotePort) try: server.starttls(context=context) except smtplib.SMTPException as e: if e.args[0] == 'STARTTLS extension not supported by server.': unittest.skip(e.args[0]) else: raise server.ehlo() server.quit() class SmtpSSLTest(unittest.TestCase): testServer = 'smtp.gmail.com' remotePort = 465 def test_connect(self): support.get_attribute(smtplib, 'SMTP_SSL') with socket_helper.transient_internet(self.testServer): server = smtplib.SMTP_SSL(self.testServer, self.remotePort) server.ehlo() server.quit() def test_connect_default_port(self): support.get_attribute(smtplib, 'SMTP_SSL') with socket_helper.transient_internet(self.testServer): server = smtplib.SMTP_SSL(self.testServer) server.ehlo() server.quit() def test_connect_using_sslcontext(self): context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT) context.check_hostname = False context.verify_mode = ssl.CERT_NONE support.get_attribute(smtplib, 'SMTP_SSL') with socket_helper.transient_internet(self.testServer): server = smtplib.SMTP_SSL(self.testServer, self.remotePort, context=context) server.ehlo() server.quit() def test_connect_using_sslcontext_verified(self): with socket_helper.transient_internet(self.testServer): can_verify = check_ssl_verifiy(self.testServer, self.remotePort) if not can_verify: self.skipTest("SSL certificate can't be verified") support.get_attribute(smtplib, 'SMTP_SSL') context = ssl.create_default_context() with socket_helper.transient_internet(self.testServer): server = smtplib.SMTP_SSL(self.testServer, self.remotePort, context=context) server.ehlo() server.quit() if __name__ == "__main__": unittest.main()