| java.lang.Object
 java.security.Permission
java.security.BasicPermission
java.net.NetPermission
| NetPermission | | final public class NetPermission extends BasicPermission (Code) | | This class is for various network permissions.
A NetPermission contains a name (also referred to as a "target name") but
no actions list; you either have the named permission
or you don't.
The target name is the name of the network permission (see below). The naming
convention follows the hierarchical property naming convention.
Also, an asterisk
may appear at the end of the name, following a ".", or by itself, to
signify a wildcard match. For example: "foo.*" or "*" is valid,
"*foo" or "a*b" is not valid.
The following table lists all the possible NetPermission target names,
and for each provides a description of what the permission allows
and a discussion of the risks of granting code the permission.
| Permission Target Name |
What the Permission Allows |
Risks of Allowing this Permission |
| setDefaultAuthenticator |
The ability to set the
way authentication information is retrieved when
a proxy or HTTP server asks for authentication |
Malicious
code can set an authenticator that monitors and steals user
authentication input as it retrieves the input from the user. |
| requestPasswordAuthentication |
The ability
to ask the authenticator registered with the system for
a password |
Malicious code may steal this password. |
| specifyStreamHandler |
The ability
to specify a stream handler when constructing a URL |
Malicious code may create a URL with resources that it would
normally not have access to (like file:/foo/fum/), specifying a
stream handler that gets the actual bytes from someplace it does
have access to. Thus it might be able to trick the system into
creating a ProtectionDomain/CodeSource for a class even though
that class really didn't come from that location. |
See Also: java.security.BasicPermission
See Also: java.security.Permission
See Also: java.security.Permissions
See Also: java.security.PermissionCollection
See Also: java.lang.SecurityManager
version:
1.39 00/02/02
author:
Marianne Mueller
author:
Roland Schemers |
| Constructor Summary | |
| public | NetPermission(String name)
Creates a new NetPermission with the specified name.
The name is the symbolic name of the NetPermission, such as
"setDefaultAuthenticator", etc. | | public | NetPermission(String name, String actions)
Creates a new NetPermission object with the specified name. |
| NetPermission | | public NetPermission(String name)(Code) | | Creates a new NetPermission with the specified name.
The name is the symbolic name of the NetPermission, such as
"setDefaultAuthenticator", etc. An asterisk
may appear at the end of the name, following a ".", or by itself, to
signify a wildcard match.
Parameters:
name - the name of the NetPermission. |
| NetPermission | | public NetPermission(String name, String actions)(Code) | | Creates a new NetPermission object with the specified name.
The name is the symbolic name of the NetPermission, and the
actions String is currently unused and should be null.
Parameters:
name - the name of the NetPermission.
Parameters:
actions - should be null. |
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