[top] / zope / security / interfaces / IChecker
Security-proxy plugin objects that implement low-level checks
The checker is responsible for creating proxies for operation return values, via the proxy method.
There are check_getattr() and check_setattr() methods for checking getattr and setattr, and a check() method for all other operations.
The check methods may raise errors. They return no value.
checker.check(ob, "__getitem__") return checker.proxy(ob[key])
There are no attributes or fields specified.
check_setattr(ob, name)
Check whether attribute assignment is allowed.
May raise Unauthorized or Forbidden. Returns no value.
proxy(value)
Return a security proxy for the value.
If a checker implements __getitem__, then __getitem__ will be called rather than proxy to proxy the value. This is a hack that allows significantly greater performance due to the fact that low-level operator access is much faster than method access.
check(ob, operation)
Check whether operation is allowed.
The operation name is the Python special method name, e.g. "__getitem__".
May raise Unauthorized or Forbidden. Returns no value.
If a checker implements __setitem__, then __setitem__ will be called rather than check to chack whether an operation is allowed. This is a hack that allows significantly greater performance due to the fact that low-level operator access is much faster than method access.
check_getattr(ob, name)
Check whether attribute access is allowed.
May raise Unauthorized or Forbidden. Returns no value.
If a checker implements __setitem__, then __setitem__ will be called rather than check_getattr to check whether an attribute access is allowed. This is a hack that allows significantly greater performance due to the fact that low-level operator access is much faster than method access.
There are no specific adapters registered for this interface.
There are no extended adapters registered for this interface.
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