__init__.py 文件源码

def is_authenticated(self, user, password):
        host = ""
        if self.configuration.has_option("auth", "imap_host"):
            host = self.configuration.get("auth", "imap_host")
        secure = True
        if self.configuration.has_option("auth", "imap_secure"):
            secure = self.configuration.getboolean("auth", "imap_secure")
        try:
            if ":" in host:
                address, port = host.rsplit(":", maxsplit=1)
            else:
                address, port = host, 143
            address, port = address.strip("[] "), int(port)
        except ValueError as e:
            raise RuntimeError(
                "Failed to parse address %r: %s" % (host, e)) from e
        if sys.version_info < (3, 4) and secure:
            raise RuntimeError("Secure IMAP is not availabe in Python < 3.4")
        try:
            connection = imaplib.IMAP4(host=address, port=port)
            try:
                if sys.version_info < (3, 4):
                    connection.starttls()
                else:
                    connection.starttls(ssl.create_default_context())
            except (imaplib.IMAP4.error, ssl.CertificateError) as e:
                if secure:
                    raise
                self.logger.debug("Failed to establish secure connection: %s",
                                  e, exc_info=True)
            try:
                connection.login(user, password)
            except imaplib.IMAP4.error as e:
                self.logger.debug(
                    "IMAP authentication failed: %s", e, exc_info=True)
                return False
            connection.logout()
            return True
        except (OSError, imaplib.IMAP4.error) as e:
            raise RuntimeError("Failed to communicate with IMAP server %r: "
                               "%s" % (host, e)) from e