VirtualMailManager/cli/handler.py
author martin f. krafft <madduck@madduck.net>
Sat, 07 Apr 2012 00:45:57 +0200
branchv0.6.x
changeset 492 e5c2b3647971
parent 422 33a45e4c80c4
child 555 499c63f52462
permissions -rw-r--r--
Modify address check query to obtain well-defined result The way in which UNION does not yield the desired result, because (a) UNION merges results and (b) the result order is undefined. This patch changes the query to select the counts as columns and hence provides a well-defined order.

# -*- coding: UTF-8 -*-
# Copyright (c) 2010 - 2011, Pascal Volk
# See COPYING for distribution information.
"""
    VirtualMailManager.cli.handler
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    A derived Handler class with a few changes/additions for cli use.
"""

import os

from VirtualMailManager.errors import VMMError
from VirtualMailManager.handler import Handler, TYPE_ACCOUNT
from VirtualMailManager.cli import read_pass
from VirtualMailManager.cli.config import CliConfig as Cfg
from VirtualMailManager.constants import ACCOUNT_EXISTS, INVALID_SECTION, \
     NO_SUCH_ACCOUNT
from VirtualMailManager.password import randompw

_ = lambda msg: msg


class CliHandler(Handler):
    """This class uses a `CliConfig` for configuration stuff, instead of
    the non-interactive `Config` class.

    It provides the additional methods cfgSet() and configure().

    Additionally it uses `VirtualMailManager.cli.read_pass()` for for the
    interactive password dialog.
    """

    __slots__ = ()  # nothing additional, also no __dict__/__weakref__

    def __init__(self):
        """Creates a new CliHandler instance.

        Throws a NotRootError if your uid is greater 0.
        """
        # Overwrite the parent CTor partly, we use the CliConfig class
        # and add some command line checks.
        skip_some_checks = os.sys.argv[1] in ('cf', 'configure', 'h', 'help',
                                              'v', 'version')
        super(CliHandler, self).__init__(skip_some_checks)

        self._cfg = Cfg(self._cfg_fname)
        self._cfg.load()

    def cfg_set(self, option, value):
        """Set a new value for the given option."""
        return self._cfg.set(option, value)

    def configure(self, section=None):
        """Starts the interactive configuration.

        Configures in interactive mode options in the given ``section``.
        If no section is given (default) all options from all sections
        will be prompted.
        """
        if section is None:
            self._cfg.configure(self._cfg.sections())
        elif self._cfg.has_section(section):
            self._cfg.configure([section])
        else:
            raise VMMError(_(u"Invalid section: '%s'") % section,
                           INVALID_SECTION)

    def user_add(self, emailaddress, password=None):
        """Override the parent user_add() - add the interactive password
        dialog.

        Returns the generated password, if account.random_password == True.
        """
        acc = self._get_account(emailaddress)
        if acc:
            raise VMMError(_(u"The account '%s' already exists.") %
                           acc.address, ACCOUNT_EXISTS)
        self._is_other_address(acc.address, TYPE_ACCOUNT)
        rand_pass = self._cfg.dget('account.random_password')
        if password is None:
            password = (read_pass, randompw)[rand_pass]()
        acc.set_password(password)
        acc.save()
        self._make_account_dirs(acc)
        return (None, password)[rand_pass]

    def user_password(self, emailaddress, password=None):
        """Override the parent user_password() - add the interactive
        password dialog."""
        acc = self._get_account(emailaddress)
        if not acc:
            raise VMMError(_(u"The account '%s' does not exist.") %
                           acc.address, NO_SUCH_ACCOUNT)
        if not isinstance(password, basestring) or not password:
            password = read_pass()
        acc.modify('password', password)

del _