VirtualMailManager/Relocated.py
author Pascal Volk <neverseen@users.sourceforge.net>
Thu, 10 Sep 2009 01:42:26 +0000
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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 Relocated class to manage relocated users."""
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from __main__ import ERR
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from Exceptions import VMMRelocatedException as VMMRE
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from Domain import Domain
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from EmailAddress import EmailAddress
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import VirtualMailManager as VMM
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class Relocated(object):
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    """Class to manage e-mail addresses of relocated users."""
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    __slots__ = ('_addr', '_dest', '_gid', '_isNew', '_dbh')
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    def __init__(self, dbh, address, destination=None):
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        if isinstance(address, EmailAddress):
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            self._addr = address
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        else:
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            raise TypeError("Argument 'address' is not an EmailAddress")
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        if destination is None:
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            self._dest = None
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        elif isinstance(destination, EmailAddress):
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            self._dest = destination
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        else:
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            raise TypeError("Argument 'destination' is not an EmailAddress")
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        if address == destination:
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            raise VMMRE(_(u"Address and destination are identical."),
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                ERR.RELOCATED_ADDR_DEST_IDENTICAL)
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        self._dbh = dbh
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        self._gid = 0
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        self._isNew = False
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        self._setAddr()
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        self._exists()
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        if self._isNew and VMM.VirtualMailManager.accountExists(self._dbh,
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                self._addr):
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            raise VMMRE(_(u"There is already an account with address “%s”.") %\
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                    self._addr, ERR.ACCOUNT_EXISTS)
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        if self._isNew and VMM.VirtualMailManager.aliasExists(self._dbh,
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                self._addr):
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            raise VMMRE(
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                    _(u"There is already an alias with the address “%s”.") %\
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                    self._addr, ERR.ALIAS_EXISTS)
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    def _exists(self):
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        dbc = self._dbh.cursor()
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        dbc.execute("SELECT gid FROM relocated WHERE gid = %s AND address = %s",
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                self._gid, self._addr._localpart)
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        gid = dbc.fetchone()
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        dbc.close()
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        if gid is None:
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            self._isNew = True
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    def _setAddr(self):
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        dom = Domain(self._dbh, self._addr._domainname)
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        self._gid = dom.getID()
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        if self._gid == 0:
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            raise VMMRE(_(u"The domain “%s” doesn't exist yet.") %\
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                    self._addr._domainname, ERR.NO_SUCH_DOMAIN)
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    def save(self):
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        if self._dest is None:
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           raise VMMRE(_(u"No destination address for relocated user denoted."),
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               ERR.RELOCATED_MISSING_DEST)
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        if self._isNew:
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            dbc = self._dbh.cursor()
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            dbc.execute("INSERT INTO relocated VALUES (%s, %s, %s)",
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                    self._gid, self._addr._localpart, str(self._dest))
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            self._dbh.commit()
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            dbc.close()
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        else:
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            raise VMMRE(
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                    _(u"The relocated user “%s” already exists.") % self._addr,
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                    ERR.RELOCATED_EXISTS)
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    def getInfo(self):
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        dbc = self._dbh.cursor()
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        dbc.execute('SELECT destination FROM relocated WHERE gid=%s\
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 AND address=%s',
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                self._gid, self._addr._localpart)
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        destination = dbc.fetchone()
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        dbc.close()
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        if destination is not None:
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            return destination[0]
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        else:
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            raise VMMRE(
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                    _(u"The relocated user “%s” doesn't exists.") % self._addr,
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                    ERR.NO_SUCH_RELOCATED)
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    def delete(self):
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        dbc = self._dbh.cursor()
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        dbc.execute("DELETE FROM relocated WHERE gid = %s AND address = %s",
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                self._gid, self._addr._localpart)
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        rowcount = dbc.rowcount
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        dbc.close()
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        if rowcount > 0:
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            self._dbh.commit()
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        else:
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            raise VMMRE(
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                    _(u"The relocated user “%s” doesn't exists.") % self._addr,
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                    ERR.NO_SUCH_RELOCATED)
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