VirtualMailManager/config.py
author Pascal Volk <user@localhost.localdomain.org>
Sat, 01 Dec 2012 17:25:11 +0000
branchv0.7.x
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child 658 ad967c4b7fe5
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VMM/cli/subcommands: Print usable password schemes in sorted order.
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# -*- coding: UTF-8 -*-
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# Copyright (c) 2007 - 2012, Pascal Volk
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# See COPYING for distribution information.
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"""
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    VirtualMailManager.config
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    ~~~~~~~~~~~~~~~~~~~~~~~~~
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    VMM's configuration module for simplified configuration access.
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"""
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from configparser import \
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     Error, MissingSectionHeaderError, NoOptionError, NoSectionError, \
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     ParsingError, RawConfigParser
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from io import StringIO
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from VirtualMailManager.common import VERSION_RE, \
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     exec_ok, expand_path, get_unicode, lisdir, size_in_bytes, version_hex
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from VirtualMailManager.constants import CONF_ERROR
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from VirtualMailManager.errors import ConfigError, VMMError
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from VirtualMailManager.maillocation import known_format
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from VirtualMailManager.password import verify_scheme as _verify_scheme
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import collections
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DB_MODULES = ('psycopg2', 'pypgsql')
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DB_SSL_MODES = ('allow', 'disabled', 'prefer', 'require', 'verify-ca',
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                'verify-full')
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_ = lambda msg: msg
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class BadOptionError(Error):
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    """Raised when a option isn't in the format 'section.option'."""
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    pass
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class ConfigValueError(Error):
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    """Raised when creating or validating of new values fails."""
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    pass
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class NoDefaultError(Error):
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    """Raised when the requested option has no default value."""
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    def __init__(self, section, option):
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        Error.__init__(self, 'Option %r in section %r has no default value' %
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                             (option, section))
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class LazyConfig(RawConfigParser):
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    """The **lazy** derivate of the `RawConfigParser`.
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    There are two additional getters:
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    `pget()`
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      The polymorphic getter, which returns a option's value with the
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      appropriate type.
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    `dget()`
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      Like `LazyConfig.pget()`, but returns the option's default, from
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      `LazyConfig._cfg['sectionname']['optionname'].default`, if the
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      option is not configured in a ini-like configuration file.
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    `set()` differs from `RawConfigParser`'s `set()` method. `set()`
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    takes the `section` and `option` arguments combined to a single
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    string in the form "section.option".
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    """
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    def __init__(self):
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        RawConfigParser.__init__(self)
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        self._modified = False
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        # sample _cfg dict.  Create your own in your derived class.
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        self._cfg = {
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            'sectionname': {
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                'optionname': LazyConfigOption(int, 1, self.getint),
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            }
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        }
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    def bool_new(self, value):
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        """Converts the string `value` into a `bool` and returns it.
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        | '1', 'on', 'yes' and 'true' will become `True`
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        | '0', 'off', 'no' and 'false' will become `False`
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        Throws a `ConfigValueError` for all other values, except bools.
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        """
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        if isinstance(value, bool):
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            return value
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        if value.lower() in self.BOOLEAN_STATES:
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            return self.BOOLEAN_STATES[value.lower()]
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        else:
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            raise ConfigValueError(_("Not a boolean: '%s'") %
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                                   get_unicode(value))
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    def getboolean(self, section, option):
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        """Returns the boolean value of the option, in the given
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        section.
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        For a boolean True, the value must be set to '1', 'on', 'yes',
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        'true' or True. For a boolean False, the value must set to '0',
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        'off', 'no', 'false' or False.
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        If the option has another value assigned this method will raise
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        a ValueError.
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        """
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        # if the setting was modified it may be still a boolean value lets see
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        tmp = self.get(section, option)
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        if isinstance(tmp, bool):
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            return tmp
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        if not tmp.lower() in self.BOOLEAN_STATES:
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            raise ValueError('Not a boolean: %s' % tmp)
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        return self.BOOLEAN_STATES[tmp.lower()]
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    def _get_section_option(self, section_option):
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        """splits ``section_option`` (section.option) in two parts and
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        returns them as list ``[section, option]``, if:
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          * it likes the format of ``section_option``
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          * the ``section`` is known
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          * the ``option`` is known
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        Else one of the following exceptions will be thrown:
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          * `BadOptionError`
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          * `NoSectionError`
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          * `NoOptionError`
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        """
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        sect_opt = section_option.lower().split('.')
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        # TODO: cache it
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        if len(sect_opt) != 2 or not sect_opt[0] or not sect_opt[1]:
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            raise BadOptionError(_("Bad format: '%s' - expected: "
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                                   "section.option") %
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                                 get_unicode(section_option))
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        if not sect_opt[0] in self._cfg:
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            raise NoSectionError(sect_opt[0])
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        if not sect_opt[1] in self._cfg[sect_opt[0]]:
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            raise NoOptionError(sect_opt[1], sect_opt[0])
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        return sect_opt
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    def items(self, section):
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        """returns an iterable that returns key, value ``tuples`` from
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        the given ``section``.
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        """
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        if section in self._sections:  # check if the section was parsed
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            sect = self._sections[section]
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        elif not section in self._cfg:
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            raise NoSectionError(section)
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        else:
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            return ((k, self._cfg[section][k].default)
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                    for k in self._cfg[section].keys())
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        # still here? Get defaults and merge defaults with configured setting
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        defaults = dict((k, self._cfg[section][k].default)
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                        for k in self._cfg[section].keys())
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        defaults.update(sect)
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        if '__name__' in defaults:
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            del defaults['__name__']
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        return iter(defaults.items())
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    def dget(self, option):
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        """Returns the value of the `option`.
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        If the option could not be found in the configuration file, the
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        configured default value, from ``LazyConfig._cfg`` will be
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        returned.
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        Arguments:
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        `option` : string
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            the configuration option in the form "section.option"
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        Throws a `NoDefaultError`, if no default value was passed to
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        `LazyConfigOption.__init__()` for the `option`.
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        """
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        section, option = self._get_section_option(option)
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        try:
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            return self._cfg[section][option].getter(section, option)
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        except (NoSectionError, NoOptionError):
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            if not self._cfg[section][option].default is None:  # may be False
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                return self._cfg[section][option].default
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            else:
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                raise NoDefaultError(section, option)
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    def pget(self, option):
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        """Returns the value of the `option`."""
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        section, option = self._get_section_option(option)
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        return self._cfg[section][option].getter(section, option)
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    def set(self, option, value):
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        """Set the `value` of the `option`.
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        Throws a `ValueError` if `value` couldn't be converted using
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        `LazyConfigOption.cls`.
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        """
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        # pylint: disable=W0221
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        # @pylint: _L A Z Y_
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        section, option = self._get_section_option(option)
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        val = self._cfg[section][option].cls(value)
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        if self._cfg[section][option].validate:
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            val = self._cfg[section][option].validate(val)
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        if not RawConfigParser.has_section(self, section):
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            self.add_section(section)
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        RawConfigParser.set(self, section, option, val)
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        self._modified = True
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    def has_section(self, section):
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        """Checks if `section` is a known configuration section."""
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        return section.lower() in self._cfg
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    def has_option(self, option):
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        """Checks if the option (section.option) is a known
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        configuration option.
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        """
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        # pylint: disable=W0221
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        # @pylint: _L A Z Y_
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        try:
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            self._get_section_option(option)
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            return True
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        except(BadOptionError, NoSectionError, NoOptionError):
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            return False
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   217
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    def sections(self):
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        """Returns an iterator object for all configuration sections."""
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        return iter(self._cfg.keys())
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   221
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class LazyConfigOption(object):
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    """A simple container class for configuration settings.
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    `LazyConfigOption` instances are required by `LazyConfig` instances,
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    and instances of classes derived from `LazyConfig`, like the
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    `Config` class.
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    """
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    __slots__ = ('__cls', '__default', '__getter', '__validate')
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    def __init__(self, cls, default, getter, validate=None):
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        """Creates a new `LazyConfigOption` instance.
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        Arguments:
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        `cls` : type
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          The class/type of the option's value
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        `default`
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          Default value of the option. Use ``None`` if the option should
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          not have a default value.
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        `getter` : callable
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          A method's name of `RawConfigParser` and derived classes, to
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          get a option's value, e.g. `self.getint`.
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        `validate` : NoneType or a callable
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          None or any method, that takes one argument, in order to
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          check the value, when `LazyConfig.set()` is called.
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        """
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        self.__cls = cls
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        self.__default = default if default is None else self.__cls(default)
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        if not isinstance(getter, collections.Callable):
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            raise TypeError('getter has to be a callable, got a %r' %
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                            getter.__class__.__name__)
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        self.__getter = getter
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        if validate and not isinstance(validate, collections.Callable):
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            raise TypeError('validate has to be callable or None, got a %r' %
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                            validate.__class__.__name__)
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        self.__validate = validate
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    @property
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    def cls(self):
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        """The class of the option's value e.g. `str`, `unicode` or `bool`."""
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        return self.__cls
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    @property
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    def default(self):
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        """The option's default value, may be `None`"""
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        return self.__default
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    @property
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    def getter(self):
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        """The getter method or function to get the option's value"""
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        return self.__getter
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    @property
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    def validate(self):
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        """A method or function to validate the value"""
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        return self.__validate
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class Config(LazyConfig):
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    """This class is for reading vmm's configuration file."""
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    def __init__(self, filename):
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        """Creates a new Config instance
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        Arguments:
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        `filename` : str
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          path to the configuration file
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        """
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        LazyConfig.__init__(self)
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        self._cfg_filename = filename
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        self._cfg_file = None
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        self._missing = {}
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        LCO = LazyConfigOption
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        bool_t = self.bool_new
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        self._cfg = {
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            'account': {
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                'delete_directory': LCO(bool_t, False, self.getboolean),
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                'directory_mode': LCO(int, 448, self.getint),
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                'disk_usage': LCO(bool_t, False, self.getboolean),
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                'password_length': LCO(int, 8, self.getint),
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                'random_password': LCO(bool_t, False, self.getboolean),
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            },
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            'bin': {
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                'dovecotpw': LCO(str, '/usr/sbin/dovecotpw', self.get,
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                                 exec_ok),
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                'du': LCO(str, '/usr/bin/du', self.get, exec_ok),
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                'postconf': LCO(str, '/usr/sbin/postconf', self.get, exec_ok),
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            },
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            'database': {
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                'host': LCO(str, 'localhost', self.get),
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                'module': LCO(str, 'psycopg2', self.get, check_db_module),
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                'name': LCO(str, 'mailsys', self.get),
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                'pass': LCO(str, None, self.get),
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                'port': LCO(int, 5432, self.getint),
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                'sslmode': LCO(str, 'prefer', self.get, check_db_ssl_mode),
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                'user': LCO(str, None, self.get),
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   321
            },
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            'domain': {
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                'auto_postmaster': LCO(bool_t, True, self.getboolean),
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                'delete_directory': LCO(bool_t, False, self.getboolean),
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                'directory_mode': LCO(int, 504, self.getint),
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                'force_deletion': LCO(bool_t, False, self.getboolean),
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                'imap': LCO(bool_t, True, self.getboolean),
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                'pop3': LCO(bool_t, True, self.getboolean),
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                'sieve': LCO(bool_t, True, self.getboolean),
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                'smtp': LCO(bool_t, True, self.getboolean),
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                'quota_bytes': LCO(str, '0', self.get_in_bytes,
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                                   check_size_value),
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                'quota_messages': LCO(int, 0, self.getint),
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                'transport': LCO(str, 'dovecot:', self.get),
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            },
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            'mailbox': {
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                'folders': LCO(str, 'Drafts:Sent:Templates:Trash',
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                               self.str),
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                'format': LCO(str, 'maildir', self.get, check_mailbox_format),
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                'root': LCO(str, 'Maildir', self.str),
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                'subscribe': LCO(bool_t, True, self.getboolean),
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            },
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            'misc': {
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                'base_directory': LCO(str, '/srv/mail', self.get, is_dir),
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                'crypt_blowfish_rounds': LCO(int, 5, self.getint),
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                'crypt_sha256_rounds': LCO(int, 5000, self.getint),
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                'crypt_sha512_rounds': LCO(int, 5000, self.getint),
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                'dovecot_version': LCO(str, None, self.hexversion,
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                                       check_version_format),
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                'password_scheme': LCO(str, 'CRAM-MD5', self.get,
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                                       verify_scheme),
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            },
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        }
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    def load(self):
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        """Loads the configuration, read only.
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        Raises a ConfigError if the configuration syntax is
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        invalid.
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        """
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        with open(self._cfg_filename, 'r') as self._cfg_file:
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            try:
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                self.readfp(self._cfg_file)
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            except (MissingSectionHeaderError, ParsingError) as err:
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                raise ConfigError(str(err), CONF_ERROR)
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   366
2
9b39f828aa8a * 'VirtualMailManager/Exceptions.py'
Pascal Volk <neverseen@users.sourceforge.net>
parents: 0
diff changeset
   367
    def check(self):
120
928659c8ee9f Comments updated.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 113
diff changeset
   368
        """Performs a configuration check.
128
cf8116625866 Converted VirtualMailManager and Postconf to new-style classes.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 120
diff changeset
   369
264
04fea4d8b900 Use the complete Dovecot version, not only the concatenated major
Pascal Volk <neverseen@users.sourceforge.net>
parents: 262
diff changeset
   370
        Raises a ConfigError if settings w/o a default value are missed.
353
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   371
        Or some settings have a invalid value.
120
928659c8ee9f Comments updated.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 113
diff changeset
   372
        """
353
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   373
        def iter_dict():
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   374
            for section, options in self._missing.items():
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   375
                errmsg.write(_('* Section: %s\n') % section)
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   376
                errmsg.writelines('    %s\n' % option for option in options)
353
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   377
            self._missing.clear()
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   378
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   379
        errmsg = None
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   380
        self._chk_non_default()
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   381
        miss_vers = 'misc' in self._missing and \
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   382
                    'dovecot_version' in self._missing['misc']
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   383
        if self._missing:
2
9b39f828aa8a * 'VirtualMailManager/Exceptions.py'
Pascal Volk <neverseen@users.sourceforge.net>
parents: 0
diff changeset
   384
            errmsg = StringIO()
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   385
            errmsg.write(_('Check of configuration file %s failed.\n') %
353
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   386
                         self._cfg_filename)
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   387
            errmsg.write(_('Missing options, which have no default value.\n'))
353
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   388
            iter_dict()
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   389
        self._chk_possible_values(miss_vers)
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   390
        if self._missing:
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   391
            if not errmsg:
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   392
                errmsg = StringIO()
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   393
                errmsg.write(_('Check of configuration file %s failed.\n') %
353
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   394
                             self._cfg_filename)
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   395
                errmsg.write(_('Invalid configuration values.\n'))
353
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   396
            else:
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   397
                errmsg.write('\n' + _('Invalid configuration values.\n'))
353
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   398
            iter_dict()
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   399
        if errmsg:
216
0c8c053b451c Moved VirtualMailManager/Exceptions to VirtualMailManager/errors.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 215
diff changeset
   400
            raise ConfigError(errmsg.getvalue(), CONF_ERROR)
264
04fea4d8b900 Use the complete Dovecot version, not only the concatenated major
Pascal Volk <neverseen@users.sourceforge.net>
parents: 262
diff changeset
   401
04fea4d8b900 Use the complete Dovecot version, not only the concatenated major
Pascal Volk <neverseen@users.sourceforge.net>
parents: 262
diff changeset
   402
    def hexversion(self, section, option):
272
446483386914 VMM/Config: Added method Config.install() -> global cfg_dget().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 270
diff changeset
   403
        """Converts the version number (e.g.: 1.2.3) from the *option*'s
446483386914 VMM/Config: Added method Config.install() -> global cfg_dget().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 270
diff changeset
   404
        value to an int."""
264
04fea4d8b900 Use the complete Dovecot version, not only the concatenated major
Pascal Volk <neverseen@users.sourceforge.net>
parents: 262
diff changeset
   405
        return version_hex(self.get(section, option))
2
9b39f828aa8a * 'VirtualMailManager/Exceptions.py'
Pascal Volk <neverseen@users.sourceforge.net>
parents: 0
diff changeset
   406
384
d3a97f7fb98a VMM/config: Added quota_bytes and quota_messages settings.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 366
diff changeset
   407
    def get_in_bytes(self, section, option):
d3a97f7fb98a VMM/config: Added quota_bytes and quota_messages settings.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 366
diff changeset
   408
        """Converts the size value (e.g.: 1024k) from the *option*'s
d3a97f7fb98a VMM/config: Added quota_bytes and quota_messages settings.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 366
diff changeset
   409
        value to a long"""
d3a97f7fb98a VMM/config: Added quota_bytes and quota_messages settings.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 366
diff changeset
   410
        return size_in_bytes(self.get(section, option))
d3a97f7fb98a VMM/config: Added quota_bytes and quota_messages settings.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 366
diff changeset
   411
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   412
    def str(self, section, option):
215
33f727efa7c4 PEP-8-ified the work of the last days.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 211
diff changeset
   413
        """Returns the value of the `option` from `section`, converted
287
1e77dd639fa3 VMM/password: moved the 'scheme check' code from pwhash() to the
Pascal Volk <neverseen@users.sourceforge.net>
parents: 286
diff changeset
   414
        to Unicode."""
174
974bafa59330 VMM/Config: reworked configuration handling.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 173
diff changeset
   415
        return get_unicode(self.get(section, option))
69
0c124160a991 * 'VirtualMailManager/VirtualMailManager.py'
Pascal Volk <neverseen@users.sourceforge.net>
parents: 68
diff changeset
   416
353
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   417
    def _chk_non_default(self):
215
33f727efa7c4 PEP-8-ified the work of the last days.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 211
diff changeset
   418
        """Checks all section's options for settings w/o a default
353
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   419
        value. Missing items will be stored in _missing.
215
33f727efa7c4 PEP-8-ified the work of the last days.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 211
diff changeset
   420
        """
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   421
        for section in self._cfg.keys():
174
974bafa59330 VMM/Config: reworked configuration handling.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 173
diff changeset
   422
            missing = []
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   423
            for option, value in self._cfg[section].items():
187
38b9a9859749 VMM/{,cli/Cli}Config: Moved interactive stuff to new CliConfig class.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 185
diff changeset
   424
                if (value.default is None and
38b9a9859749 VMM/{,cli/Cli}Config: Moved interactive stuff to new CliConfig class.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 185
diff changeset
   425
                    not RawConfigParser.has_option(self, section, option)):
215
33f727efa7c4 PEP-8-ified the work of the last days.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 211
diff changeset
   426
                    missing.append(option)
200
983cf98d5881 VMM/Config: attributes of class LazyConfigOption are read-only now.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 188
diff changeset
   427
            if missing:
353
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   428
                self._missing[section] = missing
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   429
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   430
    def _chk_possible_values(self, miss_vers):
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   431
        """Check settings for which the possible values are known."""
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   432
        if not miss_vers:
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   433
            value = self.get('misc', 'dovecot_version')
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   434
            if not VERSION_RE.match(value):
611
8e9b0046bc8f PEP8: Fixed all PEP8 related issues.
Pascal Volk <user@localhost.localdomain.org>
parents: 568
diff changeset
   435
                self._missing['misc'] = ['version: ' +
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   436
                        _("Not a valid Dovecot version: '%s'") % value]
359
7fa919dab42c VMM/config: Added option mailbox.format to the configuration check.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 353
diff changeset
   437
        # section database
353
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   438
        db_err = []
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   439
        value = self.dget('database.module').lower()
496
17f2c5b5098e VMM/config: Fixed a typo: s/DB_MUDULES/DB_MODULES/g.
Pascal Volk <user@localhost.localdomain.org>
parents: 481
diff changeset
   440
        if value not in DB_MODULES:
611
8e9b0046bc8f PEP8: Fixed all PEP8 related issues.
Pascal Volk <user@localhost.localdomain.org>
parents: 568
diff changeset
   441
            db_err.append('module: ' +
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   442
                          _("Unsupported database module: '%s'") % value)
353
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   443
        if value == 'psycopg2':
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   444
            value = self.dget('database.sslmode')
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   445
            if value not in DB_SSL_MODES:
611
8e9b0046bc8f PEP8: Fixed all PEP8 related issues.
Pascal Volk <user@localhost.localdomain.org>
parents: 568
diff changeset
   446
                db_err.append('sslmode: ' +
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   447
                              _("Unknown pgsql SSL mode: '%s'") % value)
353
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   448
        if db_err:
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   449
            self._missing['database'] = db_err
359
7fa919dab42c VMM/config: Added option mailbox.format to the configuration check.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 353
diff changeset
   450
        # section mailbox
7fa919dab42c VMM/config: Added option mailbox.format to the configuration check.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 353
diff changeset
   451
        value = self.dget('mailbox.format')
7fa919dab42c VMM/config: Added option mailbox.format to the configuration check.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 353
diff changeset
   452
        if not known_format(value):
611
8e9b0046bc8f PEP8: Fixed all PEP8 related issues.
Pascal Volk <user@localhost.localdomain.org>
parents: 568
diff changeset
   453
            self._missing['mailbox'] = ['format: ' +
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   454
                              _("Unsupported mailbox format: '%s'") % value]
458
4ff0fa3ba0fa VMM/config: Moved some options to section `domain':
Pascal Volk <neverseen@users.sourceforge.net>
parents: 384
diff changeset
   455
        # section domain
384
d3a97f7fb98a VMM/config: Added quota_bytes and quota_messages settings.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 366
diff changeset
   456
        try:
458
4ff0fa3ba0fa VMM/config: Moved some options to section `domain':
Pascal Volk <neverseen@users.sourceforge.net>
parents: 384
diff changeset
   457
            value = self.dget('domain.quota_bytes')
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   458
        except (ValueError, TypeError) as err:
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   459
            self._missing['domain'] = ['quota_bytes: ' + str(err)]
215
33f727efa7c4 PEP-8-ified the work of the last days.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 211
diff changeset
   460
33f727efa7c4 PEP-8-ified the work of the last days.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 211
diff changeset
   461
326
8f8d9c4c8332 VMM/common: Replaced function is_dir() by lisdir().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 322
diff changeset
   462
def is_dir(path):
8f8d9c4c8332 VMM/common: Replaced function is_dir() by lisdir().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 322
diff changeset
   463
    """Check if the expanded path is a directory.  When the expanded path
8f8d9c4c8332 VMM/common: Replaced function is_dir() by lisdir().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 322
diff changeset
   464
    is a directory the expanded path will be returned.  Otherwise a
8f8d9c4c8332 VMM/common: Replaced function is_dir() by lisdir().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 322
diff changeset
   465
    ConfigValueError will be raised.
8f8d9c4c8332 VMM/common: Replaced function is_dir() by lisdir().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 322
diff changeset
   466
    """
8f8d9c4c8332 VMM/common: Replaced function is_dir() by lisdir().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 322
diff changeset
   467
    path = expand_path(path)
8f8d9c4c8332 VMM/common: Replaced function is_dir() by lisdir().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 322
diff changeset
   468
    if lisdir(path):
8f8d9c4c8332 VMM/common: Replaced function is_dir() by lisdir().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 322
diff changeset
   469
        return path
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   470
    raise ConfigValueError(_("No such directory: %s") % get_unicode(path))
326
8f8d9c4c8332 VMM/common: Replaced function is_dir() by lisdir().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 322
diff changeset
   471
8f8d9c4c8332 VMM/common: Replaced function is_dir() by lisdir().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 322
diff changeset
   472
353
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   473
def check_db_module(module):
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   474
    """Check if the *module* is a supported pgsql module."""
496
17f2c5b5098e VMM/config: Fixed a typo: s/DB_MUDULES/DB_MODULES/g.
Pascal Volk <user@localhost.localdomain.org>
parents: 481
diff changeset
   475
    if module.lower() in DB_MODULES:
353
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   476
        return module
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   477
    raise ConfigValueError(_("Unsupported database module: '%s'") %
353
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   478
                           get_unicode(module))
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   479
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   480
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   481
def check_db_ssl_mode(ssl_mode):
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   482
    """Check if the *ssl_mode* is one of the SSL modes, known by pgsql."""
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   483
    if ssl_mode in DB_SSL_MODES:
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   484
        return ssl_mode
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   485
    raise ConfigValueError(_("Unknown pgsql SSL mode: '%s'") %
353
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   486
                           get_unicode(ssl_mode))
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   487
2ae40cd0d213 VMM/config: Extended configuration check and raise only a ConfigError.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 348
diff changeset
   488
301
e1d3f027dd64 VMM/Config: Added function check_mailbox_format().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 298
diff changeset
   489
def check_mailbox_format(format):
e1d3f027dd64 VMM/Config: Added function check_mailbox_format().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 298
diff changeset
   490
    """
e1d3f027dd64 VMM/Config: Added function check_mailbox_format().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 298
diff changeset
   491
    Check if the mailbox format *format* is supported.  When the *format*
e1d3f027dd64 VMM/Config: Added function check_mailbox_format().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 298
diff changeset
   492
    is supported it will be returned, otherwise a `ConfigValueError` will
e1d3f027dd64 VMM/Config: Added function check_mailbox_format().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 298
diff changeset
   493
    be raised.
e1d3f027dd64 VMM/Config: Added function check_mailbox_format().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 298
diff changeset
   494
    """
e1d3f027dd64 VMM/Config: Added function check_mailbox_format().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 298
diff changeset
   495
    format = format.lower()
e1d3f027dd64 VMM/Config: Added function check_mailbox_format().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 298
diff changeset
   496
    if known_format(format):
e1d3f027dd64 VMM/Config: Added function check_mailbox_format().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 298
diff changeset
   497
        return format
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   498
    raise ConfigValueError(_("Unsupported mailbox format: '%s'") %
301
e1d3f027dd64 VMM/Config: Added function check_mailbox_format().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 298
diff changeset
   499
                           get_unicode(format))
e1d3f027dd64 VMM/Config: Added function check_mailbox_format().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 298
diff changeset
   500
e1d3f027dd64 VMM/Config: Added function check_mailbox_format().
Pascal Volk <neverseen@users.sourceforge.net>
parents: 298
diff changeset
   501
384
d3a97f7fb98a VMM/config: Added quota_bytes and quota_messages settings.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 366
diff changeset
   502
def check_size_value(value):
d3a97f7fb98a VMM/config: Added quota_bytes and quota_messages settings.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 366
diff changeset
   503
    """Check if the size value *value* has the proper format, e.g.: 1024k.
d3a97f7fb98a VMM/config: Added quota_bytes and quota_messages settings.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 366
diff changeset
   504
    Returns the validated value string if it has the expected format.
d3a97f7fb98a VMM/config: Added quota_bytes and quota_messages settings.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 366
diff changeset
   505
    Otherwise a `ConfigValueError` will be raised."""
d3a97f7fb98a VMM/config: Added quota_bytes and quota_messages settings.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 366
diff changeset
   506
    try:
d3a97f7fb98a VMM/config: Added quota_bytes and quota_messages settings.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 366
diff changeset
   507
        tmp = size_in_bytes(value)
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   508
    except (TypeError, ValueError) as err:
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   509
        raise ConfigValueError(_("Not a valid size value: '%s'") %
384
d3a97f7fb98a VMM/config: Added quota_bytes and quota_messages settings.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 366
diff changeset
   510
                               get_unicode(value))
d3a97f7fb98a VMM/config: Added quota_bytes and quota_messages settings.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 366
diff changeset
   511
    return value
d3a97f7fb98a VMM/config: Added quota_bytes and quota_messages settings.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 366
diff changeset
   512
d3a97f7fb98a VMM/config: Added quota_bytes and quota_messages settings.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 366
diff changeset
   513
264
04fea4d8b900 Use the complete Dovecot version, not only the concatenated major
Pascal Volk <neverseen@users.sourceforge.net>
parents: 262
diff changeset
   514
def check_version_format(version_string):
04fea4d8b900 Use the complete Dovecot version, not only the concatenated major
Pascal Volk <neverseen@users.sourceforge.net>
parents: 262
diff changeset
   515
    """Check if the *version_string* has the proper format, e.g.: '1.2.3'.
04fea4d8b900 Use the complete Dovecot version, not only the concatenated major
Pascal Volk <neverseen@users.sourceforge.net>
parents: 262
diff changeset
   516
    Returns the validated version string if it has the expected format.
04fea4d8b900 Use the complete Dovecot version, not only the concatenated major
Pascal Volk <neverseen@users.sourceforge.net>
parents: 262
diff changeset
   517
    Otherwise a `ConfigValueError` will be raised.
04fea4d8b900 Use the complete Dovecot version, not only the concatenated major
Pascal Volk <neverseen@users.sourceforge.net>
parents: 262
diff changeset
   518
    """
348
ca7575401549 VMM/config: Use common.VERSION_RE, instead of defining the regexp two times.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 342
diff changeset
   519
    if not VERSION_RE.match(version_string):
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   520
        raise ConfigValueError(_("Not a valid Dovecot version: '%s'") %
264
04fea4d8b900 Use the complete Dovecot version, not only the concatenated major
Pascal Volk <neverseen@users.sourceforge.net>
parents: 262
diff changeset
   521
                               get_unicode(version_string))
04fea4d8b900 Use the complete Dovecot version, not only the concatenated major
Pascal Volk <neverseen@users.sourceforge.net>
parents: 262
diff changeset
   522
    return version_string
04fea4d8b900 Use the complete Dovecot version, not only the concatenated major
Pascal Volk <neverseen@users.sourceforge.net>
parents: 262
diff changeset
   523
287
1e77dd639fa3 VMM/password: moved the 'scheme check' code from pwhash() to the
Pascal Volk <neverseen@users.sourceforge.net>
parents: 286
diff changeset
   524
1e77dd639fa3 VMM/password: moved the 'scheme check' code from pwhash() to the
Pascal Volk <neverseen@users.sourceforge.net>
parents: 286
diff changeset
   525
def verify_scheme(scheme):
1e77dd639fa3 VMM/password: moved the 'scheme check' code from pwhash() to the
Pascal Volk <neverseen@users.sourceforge.net>
parents: 286
diff changeset
   526
    """Checks if the password scheme *scheme* can be accepted and returns
1e77dd639fa3 VMM/password: moved the 'scheme check' code from pwhash() to the
Pascal Volk <neverseen@users.sourceforge.net>
parents: 286
diff changeset
   527
    the verified scheme.
1e77dd639fa3 VMM/password: moved the 'scheme check' code from pwhash() to the
Pascal Volk <neverseen@users.sourceforge.net>
parents: 286
diff changeset
   528
    """
1e77dd639fa3 VMM/password: moved the 'scheme check' code from pwhash() to the
Pascal Volk <neverseen@users.sourceforge.net>
parents: 286
diff changeset
   529
    try:
1e77dd639fa3 VMM/password: moved the 'scheme check' code from pwhash() to the
Pascal Volk <neverseen@users.sourceforge.net>
parents: 286
diff changeset
   530
        scheme, encoding = _verify_scheme(scheme)
643
df1e3b67882a Ran 2to3 from Python 3.2.3.
Pascal Volk <user@localhost.localdomain.org>
parents: 642
diff changeset
   531
    except VMMError as err:  # 'cast' it
287
1e77dd639fa3 VMM/password: moved the 'scheme check' code from pwhash() to the
Pascal Volk <neverseen@users.sourceforge.net>
parents: 286
diff changeset
   532
        raise ConfigValueError(err.msg)
1e77dd639fa3 VMM/password: moved the 'scheme check' code from pwhash() to the
Pascal Volk <neverseen@users.sourceforge.net>
parents: 286
diff changeset
   533
    if not encoding:
1e77dd639fa3 VMM/password: moved the 'scheme check' code from pwhash() to the
Pascal Volk <neverseen@users.sourceforge.net>
parents: 286
diff changeset
   534
        return scheme
1e77dd639fa3 VMM/password: moved the 'scheme check' code from pwhash() to the
Pascal Volk <neverseen@users.sourceforge.net>
parents: 286
diff changeset
   535
    return '%s.%s' % (scheme, encoding)
1e77dd639fa3 VMM/password: moved the 'scheme check' code from pwhash() to the
Pascal Volk <neverseen@users.sourceforge.net>
parents: 286
diff changeset
   536
215
33f727efa7c4 PEP-8-ified the work of the last days.
Pascal Volk <neverseen@users.sourceforge.net>
parents: 211
diff changeset
   537
del _