Parses the command line used to launch SSLyze.

def parse_command_line(self) -> Tuple[List[ServerConnectivityTester], List[ServerStringParsingError], Any]:
        """Parses the command line used to launch SSLyze.
        """
        (args_command_list, args_target_list) = self._parser.parse_args()

        if args_command_list.update_trust_stores:
            # Just update the trust stores and do nothing
            TrustStoresRepository.update_default()
            raise TrustStoresUpdateCompleted()

        # Handle the --targets_in command line and fill args_target_list
        if args_command_list.targets_in:
            if args_target_list:
                raise CommandLineParsingError('Cannot use --targets_list and specify targets within the command line.')

            try:  # Read targets from a file
                with open(args_command_list.targets_in) as f:
                    for target in f.readlines():
                        if target.strip():  # Ignore empty lines
                            if not target.startswith('#'):  # Ignore comment lines
                                args_target_list.append(target.strip())
            except IOError:
                raise CommandLineParsingError('Can\'t read targets from input file \'{}.'.format(
                    args_command_list.targets_in))

        if not args_target_list:
            raise CommandLineParsingError('No targets to scan.')

        # Handle the --regular command line parameter as a shortcut
        if self._parser.has_option('--regular'):
            if getattr(args_command_list, 'regular'):
                setattr(args_command_list, 'regular', False)
                for cmd in self.REGULAR_CMD:
                    setattr(args_command_list, cmd, True)

        # Sanity checks on the command line options
        # Prevent --quiet and --xml_out -
        if args_command_list.xml_file and args_command_list.xml_file == '-' and args_command_list.quiet:
            raise CommandLineParsingError('Cannot use --quiet with --xml_out -.')

        # Prevent --quiet and --json_out -
        if args_command_list.json_file and args_command_list.json_file == '-' and args_command_list.quiet:
            raise CommandLineParsingError('Cannot use --quiet with --json_out -.')

        # Prevent --xml_out - and --json_out -
        if args_command_list.json_file and args_command_list.json_file == '-' \
                and args_command_list.xml_file and args_command_list.xml_file == '-':
            raise CommandLineParsingError('Cannot use --xml_out - with --json_out -.')

        # Sanity checks on the client cert options
        client_auth_creds = None
        if bool(args_command_list.cert) ^ bool(args_command_list.key):
            raise CommandLineParsingError('No private key or certificate file were given. See --cert and --key.')

        elif args_command_list.cert:
            # Private key formats
            if args_command_list.keyform == 'DER':
                key_type = OpenSslFileTypeEnum.ASN1
            elif args_command_list.keyform == 'PEM':
                key_type = OpenSslFileTypeEnum.PEM
            else:
                raise CommandLineParsingError('--keyform should be DER or PEM.')

            # Let's try to open the cert and key files
            try:
                client_auth_creds = ClientAuthenticationCredentials(args_command_list.cert,
                                                                    args_command_list.key,
                                                                    key_type,
                                                                    args_command_list.keypass)
            except ValueError as e:
                raise CommandLineParsingError('Invalid client authentication settings: {}.'.format(e.args[0]))

        # HTTP CONNECT proxy
        http_tunneling_settings = None
        if args_command_list.https_tunnel:
            try:
                http_tunneling_settings = HttpConnectTunnelingSettings.from_url(args_command_list.https_tunnel)
            except ValueError as e:
                raise CommandLineParsingError('Invalid proxy URL for --https_tunnel: {}.'.format(e.args[0]))

        # STARTTLS
        tls_wrapped_protocol = TlsWrappedProtocolEnum.PLAIN_TLS
        if args_command_list.starttls:
            if args_command_list.starttls not in self.START_TLS_PROTOCOLS:
                raise CommandLineParsingError(self.START_TLS_USAGE)
            else:
                # StartTLS was specified
                if args_command_list.starttls in self.STARTTLS_PROTOCOL_DICT.keys():
                    # Protocol was given in the command line
                    tls_wrapped_protocol = self.STARTTLS_PROTOCOL_DICT[args_command_list.starttls]

        # Create the server connectivity tester for each specified servers
        # A limitation when using the command line is that only one client_auth_credentials and http_tunneling_settings
        # can be specified, for all the servers to scan
        good_server_list = []
        bad_server_list = []
        for server_string in args_target_list:
            try:
                hostname, ip_address, port = CommandLineServerStringParser.parse_server_string(server_string)
            except ServerStringParsingError as e:
                # Will happen if the server string is malformed
                bad_server_list.append(e)
                continue

            try:
                # TODO(AD): Unicode hostnames may fail on Python2
                # hostname = hostname.decode('utf-8')
                server_info = ServerConnectivityTester(
                    hostname=hostname,
                    port=port,
                    ip_address=ip_address,
                    tls_wrapped_protocol=tls_wrapped_protocol,
                    tls_server_name_indication=args_command_list.sni,
                    xmpp_to_hostname=args_command_list.xmpp_to,
                    client_auth_credentials=client_auth_creds,
                    http_tunneling_settings=http_tunneling_settings
                )
                good_server_list.append(server_info)
            except ValueError as e:
                # Will happen for example if xmpp_to is specified for a non-XMPP connection
                raise CommandLineParsingError(e.args[0])

        # Command line hacks
        # Handle --starttls=auto now that we parsed the server strings
        if args_command_list.starttls == 'auto':
            for server_info in good_server_list:
                # We use the port number to deduce the protocol
                if server_info.port in self.STARTTLS_PROTOCOL_DICT.keys():
                    server_info.tls_wrapped_protocol = self.STARTTLS_PROTOCOL_DICT[server_info.port]

        # Handle --http_get now that we parsed the server strings
        # Doing it here is hacky as the option is defined within PluginOpenSSLCipherSuites
        if args_command_list.http_get:
            for server_info in good_server_list:
                if server_info.port == 443:
                    server_info.tls_wrapped_protocol = TlsWrappedProtocolEnum.HTTPS

        return good_server_list, bad_server_list, args_command_list