issue2550864 - Potential information leakage via journal/history Fix this by making the hyperdb::Class::history function check for view permissions on the journaled properties. So a user that sees [hidden] for a property in the web interface doesn;t see the property changes in the history. While doing this, relocated the filter for quiet properties from the templating class to the hyperdb. Also added the skipquiet option to the history command in roundup-admin.py to enable filtering of quiet params. Also changed calls to history() in the backend databases to report all items. Changed inline documentation for all history calls that document the actions. The create action (before nov 6 2002) used to record all parameters. After that point the create call uses an empty dictionary. The filtering code depends on the create dictionary being empty. It may not operate properly on very old roundup databases. Changed calls to logging.getLogger to roundup.hyperdb.backends to allow filtering the back end while keeping hyperdb logging. In cgi/templating.py, changed history() function consolidating handiling of link and unlink actions Added tests for quiet property filtering and permission filtering of history.

"""Exceptions for use across all Roundup components.
"""

__docformat__ = 'restructuredtext'

class LoginError(Exception):
    pass

class Unauthorised(Exception):
    pass

class Reject(Exception):
    """An auditor may raise this exception when the current create or set
    operation should be stopped.

    It is up to the specific interface invoking the create or set to
    handle this exception sanely. For example:

    - mailgw will trap and ignore Reject for file attachments and messages
    - cgi will trap and present the exception in a nice format
    """
    pass


class RejectRaw(Reject):
    """
    Performs the same function as Reject, except HTML in the message is not
    escaped when displayed to the user.
    """
    pass


class UsageError(ValueError):
    pass

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