Permissions represents a set of security permissions granted or revoked to
a specific part code executed in the JVM where ant is running in.
The actual Permissions are specified via a set of nested permission items either
<grant>
ed or <revoke>
d.
In the base situation a base set of permissions granted.
Extra permissions can be
granted. A granted permission can be overruled by revoking a permission.
The security manager installed by the permissions will throw an
SecurityException
if
the code subject to these permissions try to use an permission that has not been
granted or that has been revoked.
Indicates a specific permission is always granted. Its attributes indicate which permissions are granted.
Attribute | Description | Required |
class | The fully qualified name of the Permission class. | Yes |
name | The name of the Permission. The actual contents depends on the Permission class. | No |
actions | The actions allowed. The actual contents depend on the Permission class and name. | No |
Implied permissions are granted.
Please note that some Permission classes may actually need a name and / or actions in order to function properly. The name and actions are parsed by the actual Permission class.
Indicates a specific permission is revoked.
Attribute | Description | Required |
class | The fully qualified name of the Permission class. | Yes |
name | The name of the Permission. The actual contents depends on the Permission class. | No |
actions | The actions allowed. The actual contents depend on the Permission class and name. | No |
Implied permissions are not resolved and therefore also not revoked.
The name can handle the * wildcard at the end of the name, in which case all permissions of the specified class of which the name starts with the specified name (excluding the *) are revoked. Note that the - wildcard often supported by the granted properties is not supported. If the name is left empty all names match, and are revoked. If the actions are left empty all actions match, and are revoked.
These permissions can be revoked via<grant class="java.net.SocketPermission" name="localhost:1024-" actions="listen"> <grant class="java.util.PropertyPermission" name="java.version" actions="read"> <grant class="java.util.PropertyPermission" name="java.vendor" actions="read"> <grant class="java.util.PropertyPermission" name="java.vendor.url" actions="read"> <grant class="java.util.PropertyPermission" name="java.class.version" actions="read"> <grant class="java.util.PropertyPermission" name="os.name" actions="read"> <grant class="java.util.PropertyPermission" name="os.version" actions="read"> <grant class="java.util.PropertyPermission" name="os.arch" actions="read"> <grant class="java.util.PropertyPermission" name="file.encoding" actions="read"> <grant class="java.util.PropertyPermission" name="file.separator" actions="read"> <grant class="java.util.PropertyPermission" name="path.separator" actions="read"> <grant class="java.util.PropertyPermission" name="line.separator" actions="read"> <grant class="java.util.PropertyPermission" name="java.specification.version" actions="read"> <grant class="java.util.PropertyPermission" name="java.specification.vendor" actions="read"> <grant class="java.util.PropertyPermission" name="java.specification.name" actions="read"> <grant class="java.util.PropertyPermission" name="java.vm.specification.version" actions="read"> <grant class="java.util.PropertyPermission" name="java.vm.specification.vendor" actions="read"> <grant class="java.util.PropertyPermission" name="java.vm.specification.name" actions="read"> <grant class="java.util.PropertyPermission" name="java.vm.version" actions="read"> <grant class="java.util.PropertyPermission" name="java.vm.vendor" actions="read"> <grant class="java.util.PropertyPermission" name="java.vm.name" actions="read">
<revoke>
elements if necessary.
<permissions> <grant class="java.security.AllPermission"/> <revoke class="java.util.PropertyPermission"/> </permissions>
Grants all permissions to the code except for those handling Properties.
<permissions> <grant class="java.net.SocketPermission" name="foo.bar.com" action="connect"/> <grant class="java.util.PropertyPermission" name="user.home" action="read,write"/> </permissions>
Grants the base set of permissions with the addition of a SocketPermission to connect to foo.bar.com and the permission to read and write the user.home system property.
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