org.apache.tools.ant.types
Class Permissions

java.lang.Object
  |
  +--org.apache.tools.ant.types.Permissions

public class Permissions

extends java.lang.Object

This class implements a security manager meant for useage by tasks that run inside the ant VM. An examples are the Java Task and JUnitTask. The basic functionality is that nothing (except for a base set of permissions) is allowed, unless the permission is granted either explicitly or implicitly. If an permission is granted this can be overruled by explicitly revoking the permission. It is not permissible to add permissions (either granted or revoked) while the Security Manager is active (after calling setSecurityManager() but before calling restoreSecurityManager()).

Since:

Ant 1.6

Nested Class Summary

static class

Permissions.Permission Represents a permission.

Constructor Summary

Permissions()
default constructor

Permissions(boolean delegateToOldSM)
create a new set of permissions

Method Summary

void	addConfiguredGrant(Permissions.Permission perm) Adds a permission to be granted.
void	addConfiguredRevoke(Permissions.Permission perm) Adds a permission to be revoked.
void	restoreSecurityManager() To be used by tasks that just finished executing the parts subject to these permissions.
void	setSecurityManager() To be used by tasks wishing to use this security model before executing the part to be subject to these Permissions.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Permissions

public Permissions()

default constructor

Permissions

public Permissions(boolean delegateToOldSM)

create a new set of permissions

Parameters:

delegateToOldSM - if true the old security manager will be used if the permission has not been explicitly granted or revoked in this instance if false, it behaves like the default constructor

Method Detail

addConfiguredGrant

public void addConfiguredGrant(Permissions.Permission perm)

Adds a permission to be granted.

Parameters:

perm - The Permissions.Permission to be granted.

addConfiguredRevoke

public void addConfiguredRevoke(Permissions.Permission perm)

Adds a permission to be revoked.

Parameters:

perm - The Permissions.Permission to be revoked

setSecurityManager

public void setSecurityManager()
                        throws BuildException

To be used by tasks wishing to use this security model before executing the part to be subject to these Permissions. Note that setting the SecurityManager too early may prevent your part from starting, as for instance changing classloaders may be prohibited. The classloader for the new situation is supposed to be present.

BuildException

restoreSecurityManager

public void restoreSecurityManager()

To be used by tasks that just finished executing the parts subject to these permissions.