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jdk.net.NetPermission

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." and "" signify a wildcard match, while "foo" and "ab" do not.

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

allowHttpTrace The ability to use the HTTP TRACE method in HttpURLConnection. Malicious code using HTTP TRACE could get access to security sensitive information in the HTTP headers (such as cookies) that it might not otherwise have access to.

getCookieHandler The ability to get the cookie handler that processes highly security sensitive cookie information for an Http session. Malicious code can get a cookie handler to obtain access to highly security sensitive cookie information. Some web servers use cookies to save user private information such as access control information, or to track user browsing habit.

getNetworkInformation The ability to retrieve all information about local network interfaces. Malicious code can read information about network hardware such as MAC addresses, which could be used to construct local IPv6 addresses.

getProxySelector The ability to get the proxy selector used to make decisions on which proxies to use when making network connections. Malicious code can get a ProxySelector to discover proxy hosts and ports on internal networks, which could then become targets for attack.

getResponseCache The ability to get the response cache that provides access to a local response cache. Malicious code getting access to the local response cache could access security sensitive information.

requestPasswordAuthentication The ability to ask the authenticator registered with the system for a password Malicious code may steal this password.

setCookieHandler The ability to set the cookie handler that processes highly security sensitive cookie information for an Http session. Malicious code can set a cookie handler to obtain access to highly security sensitive cookie information. Some web servers use cookies to save user private information such as access control information, or to track user browsing habit.

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.

setProxySelector The ability to set the proxy selector used to make decisions on which proxies to use when making network connections. Malicious code can set a ProxySelector that directs network traffic to an arbitrary network host.

setResponseCache The ability to set the response cache that provides access to a local response cache. Malicious code getting access to the local response cache could access security sensitive information, or create false entries in the response cache.

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.

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.*" and "*" signify a wildcard
 match, while "*foo" and "a*b" do not.

 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


   allowHttpTrace
   The ability to use the HTTP TRACE method in HttpURLConnection.
   Malicious code using HTTP TRACE could get access to security sensitive
   information in the HTTP headers (such as cookies) that it might not
   otherwise have access to.



   getCookieHandler
   The ability to get the cookie handler that processes highly
   security sensitive cookie information for an Http session.
   Malicious code can get a cookie handler to obtain access to
   highly security sensitive cookie information. Some web servers
   use cookies to save user private information such as access
   control information, or to track user browsing habit.



  getNetworkInformation
  The ability to retrieve all information about local network interfaces.
  Malicious code can read information about network hardware such as
  MAC addresses, which could be used to construct local IPv6 addresses.



   getProxySelector
   The ability to get the proxy selector used to make decisions
   on which proxies to use when making network connections.
   Malicious code can get a ProxySelector to discover proxy
   hosts and ports on internal networks, which could then become
   targets for attack.



   getResponseCache
   The ability to get the response cache that provides
   access to a local response cache.
   Malicious code getting access to the local response cache
   could access security sensitive information.



   requestPasswordAuthentication
   The ability
 to ask the authenticator registered with the system for
 a password
   Malicious code may steal this password.



   setCookieHandler
   The ability to set the cookie handler that processes highly
   security sensitive cookie information for an Http session.
   Malicious code can set a cookie handler to obtain access to
   highly security sensitive cookie information. Some web servers
   use cookies to save user private information such as access
   control information, or to track user browsing habit.



   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.



   setProxySelector
   The ability to set the proxy selector used to make decisions
   on which proxies to use when making network connections.
   Malicious code can set a ProxySelector that directs network
   traffic to an arbitrary network host.



   setResponseCache
   The ability to set the response cache that provides access to
   a local response cache.
   Malicious code getting access to the local response cache
   could access security sensitive information, or create false
   entries in the response cache.



   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.
raw docstring

->net-permissionclj

(->net-permission name)
(->net-permission name actions)

Constructor.

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.

name - the name of the NetPermission. - java.lang.String actions - should be null. - java.lang.String

throws: java.lang.NullPointerException - if name is null.

Constructor.

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.

name - the name of the NetPermission. - `java.lang.String`
actions - should be null. - `java.lang.String`

throws: java.lang.NullPointerException - if name is null.
raw docstring

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