Class WrapperEventPermission
java.lang.Object
java.security.Permission
org.tanukisoftware.wrapper.security.WrapperEventPermission
- All Implemented Interfaces:
Serializable
,Guard
WrapperEventPermissions are used to grant the right to register to start
receiving events from the Wrapper.
Some of these permissions can result in performance degredations if used impropperly.
The following are examples of how to specify the permission within a policy file.
grant codeBase "file:../lib/-" { // Grant various permissions to a specific service. permission org.tanukisoftware.wrapper.security.WrapperEventPermission "service"; permission org.tanukisoftware.wrapper.security.WrapperEventPermission "service, core"; permission org.tanukisoftware.wrapper.security.WrapperEventPermission "*"; };
Possible eventTypes include the following:
Permission Event Type Name | What the Permission Allows | Risks of Allowing this Permission |
---|---|---|
service | Register to obtain events whenever the Wrapper service receives any service events. | Malicious code could receive this event and never return and thus cause performance and timeout problems with the Wrapper. Normal use of these events are quite safe however. |
control | Register to obtain events whenever the Wrapper receives any system control signals. | Malicious code could trap and consome control events, thus preventing an application from being shut down cleanly. |
core | Register to obtain events on the core workings of the Wrapper. | Malicious code or even well meaning code can greatly affect the performance of the Wrapper simply by handling these methods slowly. Some of these events are fired from within the core timing code of the Wrapper. They are useful for testing and performance checks, but in general they should not be used by most applications. |
- See Also:
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Field Summary
Fields -
Constructor Summary
ConstructorsConstructorDescriptionWrapperEventPermission
(String eventTypes) Creates a new WrapperEventPermission for the specified service. -
Method Summary
Modifier and TypeMethodDescriptionboolean
Checks two Permission objects for equality.Return the canonical string representation of the eventTypes.int
hashCode()
Returns the hash code value for this object.boolean
implies
(Permission p2) Checks if this WrapperEventPermission object "implies" the specified permission.Returns an custom WECollection implementation of a PermissionCollection.Methods inherited from class java.security.Permission
checkGuard, getName, toString
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Field Details
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EVENT_TYPE_SERVICE
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EVENT_TYPE_CONTROL
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EVENT_TYPE_REMOTE_CONTROL
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EVENT_TYPE_CORE
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Constructor Details
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WrapperEventPermission
Creates a new WrapperEventPermission for the specified service.- Parameters:
eventTypes
- The event type or event types to be registered.
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Method Details
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equals
Checks two Permission objects for equality.Do not use the equals method for making access control decisions; use the implies method.
- Specified by:
equals
in classPermission
- Parameters:
obj
- The object we are testing for equality with this object.- Returns:
- True if both Permission objects are equivalent.
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getActions
Return the canonical string representation of the eventTypes. Always returns present eventTypes in the following order: start, stop, pause, continue, interrogate. userCode.- Specified by:
getActions
in classPermission
- Returns:
- The canonical string representation of the eventTypes.
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implies
Checks if this WrapperEventPermission object "implies" the specified permission.More specifically, this method returns true if:
- p2 is an instanceof FilePermission,
- p2's eventTypes are a proper subset of this object's eventTypes, and
- p2's service name is implied by this object's service name. For example, "MyApp*" implies "MyApp".
- Specified by:
implies
in classPermission
- Parameters:
p2
- the permission to check against.- Returns:
- true if the specified permission is implied by this object,
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newPermissionCollection
Returns an custom WECollection implementation of a PermissionCollection.- Overrides:
newPermissionCollection
in classPermission
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hashCode
public int hashCode()Returns the hash code value for this object.- Specified by:
hashCode
in classPermission
- Returns:
- A hash code value for this object.
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