wiki配置管理

        # check if python-xapian is installed
        if self.xapian_search:
            try:
                import xapian
            except ImportError, err:
                self.xapian_search = False
                logging.error("xapian_search was auto-disabled because python-xapian is not installed [%s]." % str(err))

        # list to cache xapian searcher objects
        self.xapian_searchers = []

        # check if mail is possible and set flag:
        self.mail_enabled = (self.mail_smarthost is not None or self.mail_sendmail is not None) and self.mail_from
        self.mail_enabled = self.mail_enabled and True or False

        # check if jabber bot is available and set flag:
        self.jabber_enabled = self.notification_bot_uri is not None

        # if we are to use the jabber bot, instantiate a server object for future use
        if self.jabber_enabled:
            from xmlrpclib import Server
            self.notification_server = Server(self.notification_bot_uri, )

        # Cache variables for the properties below
        self._iwid = self._iwid_full = self._meta_dict = None

        self.cache.acl_rights_before = AccessControlList(self, [self.acl_rights_before])
        self.cache.acl_rights_default = AccessControlList(self, [self.acl_rights_default])
        self.cache.acl_rights_after = AccessControlList(self, [self.acl_rights_after])

        action_prefix = self.url_prefix_action
        if action_prefix is not None and action_prefix.endswith('/'): # make sure there is no trailing '/'
            self.url_prefix_action = action_prefix[:-1]

        if self.url_prefix_local is None:
            self.url_prefix_local = self.url_prefix_static

        if self.url_prefix_fckeditor is None:
            self.url_prefix_fckeditor = self.url_prefix_local + '/applets/FCKeditor'

        if self.secrets is None:  # admin did not setup a real secret, so make up something
            self.secrets = self.calc_secrets()

        secret_key_names = ['action/cache', 'wikiutil/tickets', 'xmlrpc/ProcessMail', 'xmlrpc/RemoteScript', ]
        if self.jabber_enabled:
            secret_key_names.append('jabberbot')

        secret_min_length = 10
        if isinstance(self.secrets, str):
            if len(self.secrets) < secret_min_length:
                raise error.ConfigurationError("The secrets = '...' wiki config setting is a way too short string (minimum length is %d chars)!" % (
                    secret_min_length))
            # for lazy people: set all required secrets to same value
            secrets = {}
            for key in secret_key_names:
                secrets[key] = self.secrets
            self.secrets = secrets

        # we check if we have all secrets we need and that they have minimum length
        for secret_key_name in secret_key_names:
            try:
                secret = self.secrets[secret_key_name]
                if len(secret) < secret_min_length:
                    raise ValueError
            except (KeyError, ValueError):
                raise error.ConfigurationError("You must set a (at least %d chars long) secret string for secrets['%s']!" % (
                    secret_min_length, secret_key_name))

    def calc_secrets(self):
        """ make up some 'secret' using some config values """
        varnames = ['data_dir', 'data_underlay_dir', 'language_default',
                    'mail_smarthost', 'mail_from', 'page_front_page',
                    'theme_default', 'sitename', 'logo_string',
                    'interwikiname', 'user_homewiki', 'acl_rights_before', ]
        secret = ''
        for varname in varnames:
            var = getattr(self, varname, None)
            if isinstance(var, (str, unicode)):
                secret += repr(var)
        return secret

    _meta_dict = None
    def load_meta_dict(self):
        """ The meta_dict contains meta data about the wiki instance. """
        if self._meta_dict is None:
            self._meta_dict = wikiutil.MetaDict(os.path.join(self.data_dir, 'meta'), self.cache_dir)
        return self._meta_dict
    meta_dict = property(load_meta_dict)