VirtualMailManager/AliasDomain.py
author Pascal Volk <neverseen@users.sourceforge.net>
Tue, 25 Aug 2009 11:08:00 +0000
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child 138 617f27715b01
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# -*- coding: UTF-8 -*-
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# Copyright (c) 2008 - 2009, VEB IT
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# See COPYING for distribution information.
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"""Virtual Mail Manager's AliasDomain class to manage alias domains."""
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from constants.VERSION import *
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from Exceptions import VMMAliasDomainException as VADE
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import constants.ERROR as ERR
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import VirtualMailManager as VMM
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class AliasDomain(object):
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    """Class to manage e-mail alias domains."""
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    __slots__ = ('__gid', '__name', '_domain', '_dbh')
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    def __init__(self, dbh, domainname, targetDomain=None):
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        self._dbh = dbh
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        self.__name = VMM.VirtualMailManager.chkDomainname(domainname)
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        self.__gid = 0
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        self._domain = targetDomain
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        self._exists()
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    def _exists(self):
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        dbc = self._dbh.cursor()
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        dbc.execute('SELECT gid, is_primary FROM domain_name WHERE domainname\
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 = %s', self.__name)
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        alias = dbc.fetchone()
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        dbc.close()
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        if alias is not None:
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            self.__gid, primary = alias
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            if primary:
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                raise VADE(_(u"The domain “%s” is a primary domain.") %
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                        self.__name, ERR.ALIASDOMAIN_ISDOMAIN)
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    def save(self):
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        if self.__gid > 0:
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            raise VADE(_(u'The alias domain “%s” already exists.') %self.__name,
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                    ERR.ALIASDOMAIN_EXISTS)
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        if self._domain is None:
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            raise VADE(_(u'No destination domain for alias domain denoted.'),
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                    ERR.ALIASDOMAIN_NO_DOMDEST)
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        if self._domain._id < 1:
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            raise VADE (_(u"The target domain “%s” doesn't exist yet.") %
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                    self._domain._name, ERR.NO_SUCH_DOMAIN)
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        dbc = self._dbh.cursor()
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        dbc.execute('INSERT INTO domain_name (domainname, gid, is_primary)\
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 VALUES (%s, %s, FALSE)', self.__name, self._domain._id)
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        self._dbh.commit()
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        dbc.close()
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    def info(self):
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        if self.__gid > 0:
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            dbc = self._dbh.cursor()
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            dbc.execute('SELECT domainname FROM domain_name WHERE gid = %s\
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 AND is_primary', self.__gid)
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            domain = dbc.fetchone()
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            dbc.close()
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            if domain is not None:
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                return {'alias': self.__name, 'domain': domain[0]}
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            else:# an almost unlikely case, isn't it?
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                raise VADE(
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                    _(u'There is no primary domain for the alias domain “%s”.')\
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                            % self.__name, ERR.NO_SUCH_DOMAIN)
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        else:
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            raise VADE(_(u"The alias domain “%s” doesn't exist yet.") %
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                    self.__name, ERR.NO_SUCH_ALIASDOMAIN)
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    def switch(self):
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        if self._domain is None:
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            raise VADE(_(u'No destination domain for alias domain denoted.'),
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                    ERR.ALIASDOMAIN_NO_DOMDEST)
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        if self._domain._id < 1:
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            raise VADE (_(u"The target domain “%s” doesn't exist yet.") %
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                    self._domain._name, ERR.NO_SUCH_DOMAIN)
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        if self.__gid < 1:
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            raise VADE(_(u"The alias domain “%s” doesn't exist yet.") %
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                    self.__name, ERR.NO_SUCH_ALIASDOMAIN)
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        if self.__gid == self._domain._id:
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            raise VADE(_(u"The alias domain “%(alias)s” is already assigned to\
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 the domain “%(domain)s”.") %
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                    {'alias': self.__name, 'domain': self._domain._name},
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                    ERR.ALIASDOMAIN_EXISTS)
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        dbc = self._dbh.cursor()
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        dbc.execute('UPDATE domain_name SET gid = %s WHERE gid = %s\
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 AND domainname = %s AND NOT is_primary',
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                self._domain._id, self.__gid, self.__name)
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        self._dbh.commit()
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        dbc.close()
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    def delete(self):
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        if self.__gid > 0:
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            dbc = self._dbh.cursor()
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            dbc.execute('DELETE FROM domain_name WHERE domainname = %s \
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 AND NOT is_primary', self.__name)
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            if dbc.rowcount > 0:
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                self._dbh.commit()
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        else:
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            raise VADE(
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                  _(u"The alias domain “%s” doesn't exist yet.") % self.__name,
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                  ERR.NO_SUCH_ALIASDOMAIN)
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