VirtualMailManager/cli/handler.py
author Pascal Volk <neverseen@users.sourceforge.net>
Tue, 03 Aug 2010 23:33:46 +0000
branchv0.6.x
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# -*- coding: UTF-8 -*-
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# Copyright (c) 2010, Pascal Volk
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# See COPYING for distribution information.
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"""
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    VirtualMailManager.cli.handler
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    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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    A derived Handler class with a few changes/additions for cli use.
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"""
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import os
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from VirtualMailManager.errors import VMMError
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from VirtualMailManager.handler import Handler
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from VirtualMailManager.cli import read_pass
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from VirtualMailManager.cli.config import CliConfig as Cfg
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from VirtualMailManager.constants import INVALID_SECTION
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_ = lambda msg: msg
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class CliHandler(Handler):
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    """This class uses a `CliConfig` for configuration stuff, instead of
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    the non-interactive `Config` class.
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    It provides the additional methods cfgSet() and configure().
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    Additionally it uses `VirtualMailManager.cli.read_pass()` for for the
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    interactive password dialog.
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    """
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    __slots__ = ()  # nothing additional, also no __dict__/__weakref__
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    def __init__(self):
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        """Creates a new CliHandler instance.
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        Throws a NotRootError if your uid is greater 0.
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        """
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        # Overwrite the parent CTor partly, we use the CliConfig class
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        # and add some command line checks.
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        skip_some_checks = os.sys.argv[1] in ('cf', 'configure', 'h', 'help',
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                                              'v', 'version')
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        super(CliHandler, self).__init__(skip_some_checks)
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        self._cfg = Cfg(self._cfg_fname)
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        self._cfg.load()
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        if not skip_some_checks:
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            self._cfg.check()
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            self._chkenv()
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    def cfg_set(self, option, value):
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        """Set a new value for the given option."""
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        return self._cfg.set(option, value)
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    def configure(self, section=None):
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        """Starts the interactive configuration.
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        Configures in interactive mode options in the given ``section``.
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        If no section is given (default) all options from all sections
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        will be prompted.
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        """
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        if section is None:
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            self._cfg.configure(self._cfg.sections())
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        elif self._cfg.has_section(section):
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            self._cfg.configure([section])
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        else:
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            raise VMMError(_(u'Invalid section: “%s”') % section,
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                           INVALID_SECTION)
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    def user_add(self, emailaddress, password=None):
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        """Prefix the parent user_add() with the interactive password
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        dialog."""
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        if password is None:
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            password = read_pass()
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        super(CliHandler, self).user_add(emailaddress, password)
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    def user_password(self, emailaddress, password=None):
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        """Prefix the parent user_password() with the interactive password
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        dialog."""
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        if password is None:
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            password = read_pass()
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        super(CliHandler, self).user_password(emailaddress, password)
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del _