com.sun.nfs
Class XFileExtensionAccessor
public class XFileExtensionAccessor
String[] | getExports() - Get server's export list
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boolean | loginPCNFSD(String host, String username, String password) - Sets the user's RPC credential from Login name and password.
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void | loginUGID(int uid, int gid, int[] gids) - Sets the user's RPC credential to a known uid/gid.
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void | logoutPCNFSD() - Sets the user's RPC credential to "nobody"
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void | logoutUGID() - Sets the user's RPC credential to "nobody"
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void | setNfsHandler(NfsHandler handler) - Assigns an NfsHandler class that allows
the application to receive RPC timeout
notifications.
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XFileExtensionAccessor
public XFileExtensionAccessor(XFile xf)
getExports
public String[] getExports()
throws java.net.UnknownHostException,
IOException
Get server's export list
loginPCNFSD
public boolean loginPCNFSD(String host,
String username,
String password)
Sets the user's RPC credential from Login name and password.
Every NFS request includes a "credential" that identifies the user.
An AUTH_SYS credential includes the user's UID and GID values.
These are determined from the user's login name (and password)
by the PCNFSD service that must be available on a local server.
Once the credential is set, it is assigned globally to all
future NFS XFile objects.
If this method is not called, a default credential is assigned
with a UID and GID of "nobody".
- true if the login succeeded, false otherwise.
loginUGID
public void loginUGID(int uid,
int gid,
int[] gids)
Sets the user's RPC credential to a known uid/gid.
Assumes that the calling application has already
authenticated the user and has obtained to uid/gid
itself.
Note: This credential setting method exposes an
inherent security hole in RPC AUTH_SYS authentication.
The server trusts the client to authenticate the
user before setting the UID and GID values. It is
possible for a malicious client to allow the UID and/or
group ids to be set to allow unauthorized access to
other user's files on the server.
Servers can avoid this security hole by exporting NFS
filesystem securely - requiring clients to use secure
Diffie-Hellman or Kerberos credentials.
If this method is not called, a default credential is assigned
with a UID and GID of "nobody".
logoutPCNFSD
public void logoutPCNFSD()
Sets the user's RPC credential to "nobody"
logoutUGID
public void logoutUGID()
Sets the user's RPC credential to "nobody"
setNfsHandler
public void setNfsHandler(NfsHandler handler)
Assigns an NfsHandler class that allows
the application to receive RPC timeout
notifications. The handler
is used for all
NFS files accessed by the application.
The default handler can be restored by
passing a null handler
argument.