VirtualMailManager/Account.py
author Pascal Volk <neverseen@users.sourceforge.net>
Wed, 12 May 2010 07:40:59 +0000
branchv0.6.x
changeset 293 a77b67673aa6
parent 290 e2785e04f92e
child 302 32b4a39b5640
permissions -rw-r--r--
VMM/Account: replaced attribute _mid : int by _mail : MailLocation.
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# -*- coding: UTF-8 -*-
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# Copyright (c) 2007 - 2010, Pascal Volk
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# See COPYING for distribution information.
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"""
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    VirtualMailManager.Account
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    Virtual Mail Manager's Account class to manage e-mail accounts.
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"""
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from VirtualMailManager.Domain import Domain
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from VirtualMailManager.EmailAddress import EmailAddress
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from VirtualMailManager.Transport import Transport
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from VirtualMailManager.common import version_str
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from VirtualMailManager.constants.ERROR import \
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     ACCOUNT_EXISTS, ACCOUNT_MISSING_PASSWORD, ALIAS_PRESENT, \
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     INVALID_AGUMENT, INVALID_MAIL_LOCATION, NO_SUCH_ACCOUNT, NO_SUCH_DOMAIN, \
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     UNKNOWN_SERVICE
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from VirtualMailManager.errors import AccountError as AErr
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from VirtualMailManager.maillocation import MailLocation
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from VirtualMailManager.password import pwhash
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_ = lambda msg: msg
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cfg_dget = lambda option: None
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class Account(object):
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    """Class to manage e-mail accounts."""
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    __slots__ = ('_addr', '_dbh', '_domain', '_mail', '_new', '_passwd',
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                 '_transport', '_uid')
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    def __init__(self, dbh, address):
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        """Creates a new Account instance.
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        When an account with the given *address* could be found in the
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        database all relevant data will be loaded.
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        Arguments:
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        `dbh` : pyPgSQL.PgSQL.Connection
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          A database connection for the database access.
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        `address` : VirtualMailManager.EmailAddress.EmailAddress
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          The e-mail address of the (new) Account.
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        """
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        if not isinstance(address, EmailAddress):
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            raise TypeError("Argument 'address' is not an EmailAddress")
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        self._addr = address
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        self._dbh = dbh
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        self._domain = Domain(self._dbh, self._addr.domainname)
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        if not self._domain.gid:
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            raise AErr(_(u"The domain '%s' doesn't exist.") %
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                       self._addr.domainname, NO_SUCH_DOMAIN)
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        self._uid = 0
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        self._mail = None
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        self._transport = self._domain.transport
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        self._passwd = None
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        self._new = True
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        self._load()
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    def __nonzero__(self):
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        """Returns `True` if the Account is known, `False` if it's new."""
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        return not self._new
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    def _load(self):
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        """Load 'uid', 'mid' and 'tid' from the database and set _new to
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        `False` - if the user could be found. """
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        dbc = self._dbh.cursor()
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        dbc.execute('SELECT uid, mid, tid FROM users WHERE gid = %s AND '
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                    'local_part = %s', self._domain.gid, self._addr.localpart)
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        result = dbc.fetchone()
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        dbc.close()
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        if result:
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            self._uid, _mid, _tid = result
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            if _tid != self._transport.tid:
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                self._transport = Transport(self._dbh, tid=_tid)
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            self._mail = MailLocation(mid=_mid)
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            self._new = False
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    def _set_uid(self):
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        """Set the unique ID for the new Account."""
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        assert self._uid == 0
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        dbc = self._dbh.cursor()
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        dbc.execute("SELECT nextval('users_uid')")
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        self._uid = dbc.fetchone()[0]
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        dbc.close()
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    def _prepare(self, maillocation):
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        """Check and set different attributes - before we store the
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        information in the database.
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        """
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        if maillocation.dovecot_version > cfg_dget('misc.dovecot_version'):
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            raise AErr(_(u"The mail_location prefix '%(prefix)s' requires "
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                         u"Dovecot >= v%(version)s") %
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                       {'prefix': maillocation.prefix,
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                        'version': version_str(maillocation.dovecot_version)},
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                       INVALID_MAIL_LOCATION)
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        if not maillocation.postfix and \
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          self._transport.transport.lower() in ('virtual:', 'virtual'):
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            raise AErr(_(u"Invalid transport '%(transport)s' for mail_location"
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                         u" prefix '%(prefix)s'") %
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                       {'transport': self._transport,
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                        'prefix': maillocation.prefix}, INVALID_MAIL_LOCATION)
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        self._mail = maillocation
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        self._set_uid()
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    def _switch_state(self, state, service):
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        """Switch the state of the Account's services on or off. See
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        Account.enable()/Account.disable() for more information."""
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        self._chk_state()
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        if service not in (None, 'all', 'imap', 'pop3', 'sieve', 'smtp'):
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            raise AErr(_(u"Unknown service: '%s'.") % service, UNKNOWN_SERVICE)
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        if cfg_dget('misc.dovecot_version') >= 0x10200b02:
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            sieve_col = 'sieve'
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        else:
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            sieve_col = 'managesieve'
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        if service in ('smtp', 'pop3', 'imap'):
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            sql = 'UPDATE users SET %s = %s WHERE uid = %d' % (service, state,
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                                                               self._uid)
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        elif service == 'sieve':
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            sql = 'UPDATE users SET %s = %s WHERE uid = %d' % (sieve_col,
245
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                                                               state,
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                                                               self._uid)
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        else:
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            sql = 'UPDATE users SET smtp = %(s)s, pop3 = %(s)s, imap = %(s)s,\
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 %(col)s = %(s)s WHERE uid = %(uid)d' % \
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                {'s': state, 'col': sieve_col, 'uid': self._uid}
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        dbc = self._dbh.cursor()
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        dbc.execute(sql)
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        if dbc.rowcount > 0:
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            self._dbh.commit()
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        dbc.close()
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    def _count_aliases(self):
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        """Count all alias addresses where the destination address is the
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        address of the Account."""
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        dbc = self._dbh.cursor()
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        sql = "SELECT COUNT(destination) FROM alias WHERE destination = '%s'"\
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                % self._addr
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        dbc.execute(sql)
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        a_count = dbc.fetchone()[0]
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        dbc.close()
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        return a_count
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    def _chk_state(self):
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        """Raise an AccountError if the Account is new - not yet saved in the
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        database."""
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        if self._new:
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            raise AErr(_(u"The account '%s' doesn't exist.") % self._addr,
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                       NO_SUCH_ACCOUNT)
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    @property
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    def address(self):
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        """The Account's EmailAddress instance."""
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        return self._addr
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    @property
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    def domain_directory(self):
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        """The directory of the domain the Account belongs to."""
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        if self._domain:
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            return self._domain.directory
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        return None
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    @property
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    def gid(self):
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        """The Account's group ID."""
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        if self._domain:
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            return self._domain.gid
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        return None
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    @property
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    def home(self):
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        """The Account's home directory."""
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        if not self._new:
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            return '%s/%s' % (self._domain.directory, self._uid)
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        return None
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    @property
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    def mail_location(self):
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        """The Account's MailLocation."""
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        return self._mail
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    @property
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    def uid(self):
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        """The Account's unique ID."""
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        return self._uid
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    def set_password(self, password):
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        """Set a password for the new Account.
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        If you want to update the password of an existing Account use
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        Account.modify().
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        Argument:
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        `password` : basestring
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          The password for the new Account.
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        """
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        if not isinstance(password, basestring) or not password:
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            raise AErr(_(u"Couldn't accept password: '%s'") % password,
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                       ACCOUNT_MISSING_PASSWORD)
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        self._passwd = password
0
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    def set_transport(self, transport):
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        """Set the transport for the new Account.
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   206
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        If you want to update the transport of an existing Account use
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        Account.modify().
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        Argument:
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        `transport` : basestring
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          The string representation of the transport, e.g.: 'dovecot:'
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        """
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        self._transport = Transport(self._dbh, transport=transport)
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   216
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    def enable(self, service=None):
245
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        """Enable a/all service/s for the Account.
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   219
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        Possible values for the *service* are: 'imap', 'pop3', 'sieve' and
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        'smtp'. When all services should be enabled, use 'all' or the
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        default value `None`.
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   224
        Arguments:
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        `service` : basestring
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          The name of a service ('imap', 'pop3', 'smtp', 'sieve'), 'all'
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          or `None`.
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   229
        """
275
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        self._switch_state(True, service)
0
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   231
275
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    def disable(self, service=None):
245
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        """Disable a/all service/s for the Account.
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   234
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        For more information see: Account.enable()."""
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        self._switch_state(False, service)
245
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    def save(self):
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        """Save the new Account in the database."""
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        if not self._new:
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            raise AErr(_(u"The account '%s' already exists.") % self._addr,
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                       ACCOUNT_EXISTS)
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        if not self._passwd:
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            raise AErr(_(u"No password set for '%s'.") % self._addr,
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                       ACCOUNT_MISSING_PASSWORD)
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        if cfg_dget('misc.dovecot_version') >= 0x10200b02:
245
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            sieve_col = 'sieve'
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        else:
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            sieve_col = 'managesieve'
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        self._prepare(MailLocation(format=cfg_dget('mailbox.format')))
245
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        sql = "INSERT INTO users (local_part, passwd, uid, gid, mid, tid,\
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 smtp, pop3, imap, %s) VALUES ('%s', '%s', %d, %d, %d, %d, %s, %s, %s, %s)" % (
276
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            sieve_col, self._addr.localpart, pwhash(self._passwd,
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                                                    user=self._addr),
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            self._uid, self._domain.gid, self._mail.mid, self._transport.tid,
275
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            cfg_dget('account.smtp'), cfg_dget('account.pop3'),
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            cfg_dget('account.imap'), cfg_dget('account.sieve'))
245
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        dbc = self._dbh.cursor()
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        dbc.execute(sql)
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        self._dbh.commit()
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        dbc.close()
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        self._new = False
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   263
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   264
    def modify(self, field, value):
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        """Update the Account's *field* to the new *value*.
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        Possible values for *field* are: 'name', 'password' and
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        'transport'.  *value* is the *field*'s new value.
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        Arguments:
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        `field` : basestring
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          The attribute name: 'name', 'password' or 'transport'
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        `value` : basestring
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          The new value of the attribute.
245
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        """
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        if field not in ('name', 'password', 'transport'):
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            raise AErr(_(u"Unknown field: '%s'") % field, INVALID_AGUMENT)
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        self._chk_state()
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        dbc = self._dbh.cursor()
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        if field == 'password':
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            dbc.execute('UPDATE users SET passwd = %s WHERE uid = %s',
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                        pwhash(value, user=self._addr), self._uid)
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   284
        elif field == 'transport':
275
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            if value != self._transport.transport:
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                self._transport = Transport(self._dbh, transport=value)
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                dbc.execute('UPDATE users SET tid = %s WHERE uid = %s',
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                            self._transport.tid, self._uid)
0
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        else:
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            dbc.execute('UPDATE users SET name = %s WHERE uid = %s',
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                        value, self._uid)
0
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        if dbc.rowcount > 0:
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            self._dbh.commit()
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        dbc.close()
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   296
    def get_info(self):
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        """Returns a dict with some information about the Account.
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   298
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        The keys of the dict are: 'address', 'gid', 'home', 'imap'
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   300
        'mail_location', 'name', 'pop3', 'sieve', 'smtp', transport' and
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        'uid'.
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   302
        """
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   303
        self._chk_state()
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   304
        if cfg_dget('misc.dovecot_version') >= 0x10200b02:
134
6ca3d22e5dd0 Fixed a Python2.4.4 SyntaxError
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   305
            sieve_col = 'sieve'
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   306
        else:
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   307
            sieve_col = 'managesieve'
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        sql = 'SELECT name, smtp, pop3, imap, %s FROM users WHERE uid = %d' % \
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   309
            (sieve_col, self._uid)
0
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        dbc = self._dbh.cursor()
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        dbc.execute(sql)
0
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        info = dbc.fetchone()
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        dbc.close()
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   314
        if info:
275
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            keys = ('name', 'smtp', 'pop3', 'imap', sieve_col)
0
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            info = dict(zip(keys, info))
275
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   317
            for service in keys[1:]:
245
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   318
                if info[service]:
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                    # TP: A service (pop3/imap) is enabled/usable for a user
41
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   320
                    info[service] = _('enabled')
20
55146c78b3fb * 'create_tables.pgsql'
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diff changeset
   321
                else:
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a849843115e9 Added comments for the Translation Project. Updated PO template.
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   322
                    # TP: A service (pop3/imap) isn't enabled/usable for a user
41
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   323
                    info[service] = _('disabled')
0
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            info['address'] = self._addr
275
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   325
            info['gid'] = self._domain.gid
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   326
            info['home'] = '%s/%s' % (self._domain.directory, self._uid)
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a77b67673aa6 VMM/Account: replaced attribute _mid : int by _mail : MailLocation.
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            info['mail_location'] = self._mail.mail_location
275
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   328
            info['transport'] = self._transport.transport
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   329
            info['uid'] = self._uid
0
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   330
            return info
245
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        # nearly impossible‽
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   332
        raise AErr(_(u"Couldn't fetch information for account: '%s'") %
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   333
                   self._addr, NO_SUCH_ACCOUNT)
0
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   334
245
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   335
    def get_aliases(self):
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   336
        """Return a list with all alias e-mail addresses, whose destination
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   337
        is the address of the Account."""
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   338
        self._chk_state()
90
1734eb5101c6 * 'VirtualMailManager/Account.py'
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   339
        dbc = self._dbh.cursor()
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   340
        dbc.execute("SELECT address ||'@'|| domainname FROM alias, "
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   341
                    "domain_name WHERE destination = %s AND domain_name.gid = "
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diff changeset
   342
                    "alias.gid AND domain_name.is_primary ORDER BY address",
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   343
                    str(self._addr))
90
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   344
        addresses = dbc.fetchall()
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   345
        dbc.close()
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   346
        aliases = []
245
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   347
        if addresses:
144
4c6aa6c29dd7 Small optimizations in Account.getAliases() and Alias.getInfo().
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   348
            aliases = [alias[0] for alias in addresses]
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   349
        return aliases
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   350
275
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   351
    def delete(self, delalias=False):
245
f9a6b6701cf9 VMM/Account: reworked class Account.
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   352
        """Delete the Account from the database.
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   353
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   354
        Argument:
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   355
275
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   356
        `delalias` : bool
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   357
          if *delalias* is `True`, all aliases, which points to the Account,
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   358
          will be also deleted.  If there are aliases and *delalias* is
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   359
          `False`, an AccountError will be raised.
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diff changeset
   360
        """
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   361
        assert isinstance(delalias, bool)
245
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   362
        self._chk_state()
66
995d538a6eb5 * 'VirtualMailManager/Account.py'
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diff changeset
   363
        dbc = self._dbh.cursor()
275
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diff changeset
   364
        if delalias:
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diff changeset
   365
            dbc.execute('DELETE FROM users WHERE uid = %s', self._uid)
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5506433db9a3 * 'VirtualMailManager/Account.py'
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   366
            # delete also all aliases where the destination address is the same
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diff changeset
   367
            # as for this account.
114
e671210b04b8 Fixed a libpq.OperationalError in Account.delete()
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diff changeset
   368
            dbc.execute("DELETE FROM alias WHERE destination = %s",
245
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diff changeset
   369
                        str(self._addr))
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diff changeset
   370
            self._dbh.commit()
f9a6b6701cf9 VMM/Account: reworked class Account.
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parents: 236
diff changeset
   371
        else:  # check first for aliases
f9a6b6701cf9 VMM/Account: reworked class Account.
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parents: 236
diff changeset
   372
            a_count = self._count_aliases()
275
524f7ed5ad5b VMM/Account: some modifications and small improvements in class Account.
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parents: 266
diff changeset
   373
            if a_count > 0:
66
995d538a6eb5 * 'VirtualMailManager/Account.py'
Pascal Volk <neverseen@users.sourceforge.net>
parents: 65
diff changeset
   374
                dbc.close()
290
e2785e04f92e VMM/…: re-indented long queries and error messages.
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parents: 276
diff changeset
   375
                raise AErr(_(u"There are %(count)d aliases with the "
e2785e04f92e VMM/…: re-indented long queries and error messages.
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parents: 276
diff changeset
   376
                             u"destination address '%(address)s'.") %
245
f9a6b6701cf9 VMM/Account: reworked class Account.
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parents: 236
diff changeset
   377
                           {'count': a_count, 'address': self._addr},
f9a6b6701cf9 VMM/Account: reworked class Account.
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parents: 236
diff changeset
   378
                           ALIAS_PRESENT)
275
524f7ed5ad5b VMM/Account: some modifications and small improvements in class Account.
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parents: 266
diff changeset
   379
            dbc.execute('DELETE FROM users WHERE uid = %s', self._uid)
524f7ed5ad5b VMM/Account: some modifications and small improvements in class Account.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 266
diff changeset
   380
            self._dbh.commit()
66
995d538a6eb5 * 'VirtualMailManager/Account.py'
Pascal Volk <neverseen@users.sourceforge.net>
parents: 65
diff changeset
   381
        dbc.close()
275
524f7ed5ad5b VMM/Account: some modifications and small improvements in class Account.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 266
diff changeset
   382
        self._new = True
293
a77b67673aa6 VMM/Account: replaced attribute _mid : int by _mail : MailLocation.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 290
diff changeset
   383
        self._uid = 0
275
524f7ed5ad5b VMM/Account: some modifications and small improvements in class Account.
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parents: 266
diff changeset
   384
        self._addr = self._dbh = self._domain = self._passwd = None
293
a77b67673aa6 VMM/Account: replaced attribute _mid : int by _mail : MailLocation.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 290
diff changeset
   385
        self._mail = self._transport = None
19
bf9a03c476fc * 'VirtualMailManager/VirtualMailManager.py'
Pascal Volk <neverseen@users.sourceforge.net>
parents: 17
diff changeset
   386
225
a51809f7940b VMM/Transport: reworked Transport class.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 216
diff changeset
   387
252
af555e6967c8 VMM/Account: renamed function getAccountByID -> get_account_by_uid.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 250
diff changeset
   388
def get_account_by_uid(uid, dbh):
245
f9a6b6701cf9 VMM/Account: reworked class Account.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 236
diff changeset
   389
    """Search an Account by its UID.
f9a6b6701cf9 VMM/Account: reworked class Account.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 236
diff changeset
   390
252
af555e6967c8 VMM/Account: renamed function getAccountByID -> get_account_by_uid.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 250
diff changeset
   391
    This function returns a dict (keys: 'address', 'gid' and 'uid'), if an
af555e6967c8 VMM/Account: renamed function getAccountByID -> get_account_by_uid.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 250
diff changeset
   392
    Account with the given *uid* exists.
af555e6967c8 VMM/Account: renamed function getAccountByID -> get_account_by_uid.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 250
diff changeset
   393
245
f9a6b6701cf9 VMM/Account: reworked class Account.
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parents: 236
diff changeset
   394
    Argument:
f9a6b6701cf9 VMM/Account: reworked class Account.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 236
diff changeset
   395
f9a6b6701cf9 VMM/Account: reworked class Account.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 236
diff changeset
   396
    `uid` : long
f9a6b6701cf9 VMM/Account: reworked class Account.
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parents: 236
diff changeset
   397
      The Account unique ID.
f9a6b6701cf9 VMM/Account: reworked class Account.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 236
diff changeset
   398
    `dbh` : pyPgSQL.PgSQL.Connection
f9a6b6701cf9 VMM/Account: reworked class Account.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 236
diff changeset
   399
      a database connection for the database access.
f9a6b6701cf9 VMM/Account: reworked class Account.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 236
diff changeset
   400
    """
19
bf9a03c476fc * 'VirtualMailManager/VirtualMailManager.py'
Pascal Volk <neverseen@users.sourceforge.net>
parents: 17
diff changeset
   401
    try:
bf9a03c476fc * 'VirtualMailManager/VirtualMailManager.py'
Pascal Volk <neverseen@users.sourceforge.net>
parents: 17
diff changeset
   402
        uid = long(uid)
bf9a03c476fc * 'VirtualMailManager/VirtualMailManager.py'
Pascal Volk <neverseen@users.sourceforge.net>
parents: 17
diff changeset
   403
    except ValueError:
245
f9a6b6701cf9 VMM/Account: reworked class Account.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 236
diff changeset
   404
        raise AErr(_(u'UID must be an int/long.'), INVALID_AGUMENT)
19
bf9a03c476fc * 'VirtualMailManager/VirtualMailManager.py'
Pascal Volk <neverseen@users.sourceforge.net>
parents: 17
diff changeset
   405
    if uid < 1:
245
f9a6b6701cf9 VMM/Account: reworked class Account.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 236
diff changeset
   406
        raise AErr(_(u'UID must be greater than 0.'), INVALID_AGUMENT)
19
bf9a03c476fc * 'VirtualMailManager/VirtualMailManager.py'
Pascal Volk <neverseen@users.sourceforge.net>
parents: 17
diff changeset
   407
    dbc = dbh.cursor()
290
e2785e04f92e VMM/…: re-indented long queries and error messages.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 276
diff changeset
   408
    dbc.execute("SELECT local_part||'@'|| domain_name.domainname AS address, "
e2785e04f92e VMM/…: re-indented long queries and error messages.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 276
diff changeset
   409
                "uid, users.gid FROM users LEFT JOIN domain_name ON "
e2785e04f92e VMM/…: re-indented long queries and error messages.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 276
diff changeset
   410
                "(domain_name.gid = users.gid AND is_primary) WHERE uid = %s",
e2785e04f92e VMM/…: re-indented long queries and error messages.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 276
diff changeset
   411
                uid)
19
bf9a03c476fc * 'VirtualMailManager/VirtualMailManager.py'
Pascal Volk <neverseen@users.sourceforge.net>
parents: 17
diff changeset
   412
    info = dbc.fetchone()
bf9a03c476fc * 'VirtualMailManager/VirtualMailManager.py'
Pascal Volk <neverseen@users.sourceforge.net>
parents: 17
diff changeset
   413
    dbc.close()
245
f9a6b6701cf9 VMM/Account: reworked class Account.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 236
diff changeset
   414
    if not info:
f9a6b6701cf9 VMM/Account: reworked class Account.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 236
diff changeset
   415
        raise AErr(_(u"There is no account with the UID '%d'.") % uid,
f9a6b6701cf9 VMM/Account: reworked class Account.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 236
diff changeset
   416
                   NO_SUCH_ACCOUNT)
f9a6b6701cf9 VMM/Account: reworked class Account.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 236
diff changeset
   417
    info = dict(zip(('address', 'uid', 'gid'), info))
19
bf9a03c476fc * 'VirtualMailManager/VirtualMailManager.py'
Pascal Volk <neverseen@users.sourceforge.net>
parents: 17
diff changeset
   418
    return info
bf9a03c476fc * 'VirtualMailManager/VirtualMailManager.py'
Pascal Volk <neverseen@users.sourceforge.net>
parents: 17
diff changeset
   419
275
524f7ed5ad5b VMM/Account: some modifications and small improvements in class Account.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 266
diff changeset
   420
del _, cfg_dget