org.mortbay.http
Class HashUserRealm

java.lang.Object
  extended by java.util.AbstractMap<K,V>
      extended by java.util.HashMap
          extended by org.mortbay.http.HashUserRealm
All Implemented Interfaces:
java.io.Externalizable, java.io.Serializable, java.lang.Cloneable, java.util.Map, SSORealm, UserRealm
Direct Known Subclasses:
JDBCUserRealm

public class HashUserRealm
extends java.util.HashMap
implements UserRealm, SSORealm, java.io.Externalizable

HashMapped User Realm. An implementation of UserRealm that stores users and roles in-memory in HashMaps.

Typically these maps are populated by calling the load() method or passing a properties resource to the constructor. The format of the properties file is:

  username: password [,rolename ...]
 
Passwords may be clear text, obfuscated or checksummed. The class com.mortbay.Util.Password should be used to generate obfuscated passwords or password checksums. If DIGEST Authentication is used, the password must be in a recoverable format, either plain text or OBF:. The HashUserRealm also implements SSORealm but provides no implementation of SSORealm. Instead setSSORealm may be used to provide a delegate SSORealm implementation.

Version:
$Id: HashUserRealm.java,v 1.29 2005/08/13 00:01:24 gregwilkins Exp $
Author:
Greg Wilkins (gregw)
See Also:
Password, Serialized Form

Field Summary
static java.lang.String __SSO
          HttpContext Attribute to set to activate SSO.
protected  java.util.HashMap _roles
           
 
Constructor Summary
HashUserRealm()
          Constructor.
HashUserRealm(java.lang.String name)
          Constructor.
HashUserRealm(java.lang.String name, java.lang.String config)
          Constructor.
 
Method Summary
 void addUserToRole(java.lang.String userName, java.lang.String roleName)
          Add a user to a role.
 java.security.Principal authenticate(java.lang.String username, java.lang.Object credentials, HttpRequest request)
          Authenticate a users credentials.
 void clearSingleSignOn(java.lang.String username)
          Clear SSO for user.
 void disassociate(java.security.Principal user)
          Dissassociate the calling context with a Principal.
 void dump(java.io.PrintStream out)
           
 java.lang.String getName()
           
 java.security.Principal getPrincipal(java.lang.String username)
          Get the principal for a username.
 Credential getSingleSignOn(HttpRequest request, HttpResponse response)
          Get SSO credentials.
 SSORealm getSSORealm()
           
 boolean isUserInRole(java.security.Principal user, java.lang.String roleName)
          Check if a user is in a role.
 void load(java.lang.String config)
          Load realm users from properties file.
 void logout(java.security.Principal user)
          logout a user Principal.
 java.security.Principal popRole(java.security.Principal user)
          Pop role from a Principal.
 java.security.Principal pushRole(java.security.Principal user, java.lang.String role)
          Push role onto a Principal.
 java.lang.Object put(java.lang.Object name, java.lang.Object credentials)
          Put user into realm.
 void readExternal(java.io.ObjectInput in)
           
 boolean reauthenticate(java.security.Principal user)
          Re Authenticate a Principal.
 void setName(java.lang.String name)
           
 void setSingleSignOn(HttpRequest request, HttpResponse response, java.security.Principal principal, Credential credential)
          Set SSO principal and credential.
 void setSSORealm(SSORealm ssoRealm)
          Set the SSORealm.
 java.lang.String toString()
           
 void writeExternal(java.io.ObjectOutput out)
           
 
Methods inherited from class java.util.HashMap
clear, clone, containsKey, containsValue, entrySet, get, isEmpty, keySet, putAll, remove, size, values
 
Methods inherited from class java.util.AbstractMap
equals, hashCode
 
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface java.util.Map
equals, hashCode
 

Field Detail

__SSO

public static final java.lang.String __SSO
HttpContext Attribute to set to activate SSO.

See Also:
Constant Field Values

_roles

protected java.util.HashMap _roles
Constructor Detail

HashUserRealm

public HashUserRealm()
Constructor.


HashUserRealm

public HashUserRealm(java.lang.String name)
Constructor.

Parameters:
name - Realm Name

HashUserRealm

public HashUserRealm(java.lang.String name,
                     java.lang.String config)
              throws java.io.IOException
Constructor.

Parameters:
name - Realm name
config - Filename or url of user properties file.
Throws:
java.io.IOException
Method Detail

writeExternal

public void writeExternal(java.io.ObjectOutput out)
                   throws java.io.IOException
Specified by:
writeExternal in interface java.io.Externalizable
Throws:
java.io.IOException

readExternal

public void readExternal(java.io.ObjectInput in)
                  throws java.io.IOException,
                         java.lang.ClassNotFoundException
Specified by:
readExternal in interface java.io.Externalizable
Throws:
java.io.IOException
java.lang.ClassNotFoundException

load

public void load(java.lang.String config)
          throws java.io.IOException
Load realm users from properties file. The property file maps usernames to password specs followed by an optional comma separated list of role names.

Parameters:
config - Filename or url of user properties file.
Throws:
java.io.IOException

setName

public void setName(java.lang.String name)
Parameters:
name - The realm name

getName

public java.lang.String getName()
Specified by:
getName in interface UserRealm
Returns:
The realm name.

getPrincipal

public java.security.Principal getPrincipal(java.lang.String username)
Description copied from interface: UserRealm
Get the principal for a username. This method is not guaranteed to return a Principal for non-authenticated users.

Specified by:
getPrincipal in interface UserRealm

authenticate

public java.security.Principal authenticate(java.lang.String username,
                                            java.lang.Object credentials,
                                            HttpRequest request)
Description copied from interface: UserRealm
Authenticate a users credentials. Implementations of this method may adorn the calling context to assoicate it with the authenticated principal (eg ThreadLocals). If such context associations are made, they should be considered valid until a UserRealm.deAuthenticate(UserPrincipal) call is made for this UserPrincipal.

Specified by:
authenticate in interface UserRealm
Parameters:
username - The username.
credentials - The user credentials, normally a String password.
request - The request to be authenticated. Additional parameters may be extracted or set on this request as needed for the authentication mechanism (none required for BASIC and FORM authentication).
Returns:
The authenticated UserPrincipal.

disassociate

public void disassociate(java.security.Principal user)
Description copied from interface: UserRealm
Dissassociate the calling context with a Principal. This method is called when the calling context is not longer associated with the Principal. It should be used by an implementation to remove context associations such as ThreadLocals. The UserPrincipal object remains authenticated, as it may be associated with other contexts.

Specified by:
disassociate in interface UserRealm
Parameters:
user - A UserPrincipal allocated from this realm.

pushRole

public java.security.Principal pushRole(java.security.Principal user,
                                        java.lang.String role)
Description copied from interface: UserRealm
Push role onto a Principal. This method is used to add a role to an existing principal.

Specified by:
pushRole in interface UserRealm
Parameters:
user - An existing UserPrincipal or null for an anonymous user.
role - The role to add.
Returns:
A new UserPrincipal object that wraps the passed user, but with the added role.

popRole

public java.security.Principal popRole(java.security.Principal user)
Description copied from interface: UserRealm
Pop role from a Principal.

Specified by:
popRole in interface UserRealm
Parameters:
user - A UserPrincipal previously returned from pushRole
Returns:
The principal without the role. Most often this will be the original UserPrincipal passed.

put

public java.lang.Object put(java.lang.Object name,
                            java.lang.Object credentials)
Put user into realm.

Specified by:
put in interface java.util.Map
Overrides:
put in class java.util.HashMap
Parameters:
name - User name
credentials - String password, Password or UserPrinciple instance.
Returns:
Old UserPrinciple value or null

addUserToRole

public void addUserToRole(java.lang.String userName,
                          java.lang.String roleName)
Add a user to a role.

Parameters:
userName -
roleName -

reauthenticate

public boolean reauthenticate(java.security.Principal user)
Description copied from interface: UserRealm
Re Authenticate a Principal. Authenicate a principal that has previously been return from the authenticate method. Implementations of this method may adorn the calling context to assoicate it with the authenticated principal (eg ThreadLocals). If such context associations are made, they should be considered valid until a UserRealm.deAuthenticate(UserPrincipal) call is made for this UserPrincipal.

Specified by:
reauthenticate in interface UserRealm
Returns:
True if this user is still authenticated.

isUserInRole

public boolean isUserInRole(java.security.Principal user,
                            java.lang.String roleName)
Check if a user is in a role.

Specified by:
isUserInRole in interface UserRealm
Parameters:
user - The user, which must be from this realm
roleName -
Returns:
True if the user can act in the role.

logout

public void logout(java.security.Principal user)
Description copied from interface: UserRealm
logout a user Principal. Called by authentication mechanisms (eg FORM) that can detect logout.

Specified by:
logout in interface UserRealm
Parameters:
user - A Principal previously returned from this realm

toString

public java.lang.String toString()
Overrides:
toString in class java.util.AbstractMap

dump

public void dump(java.io.PrintStream out)

getSSORealm

public SSORealm getSSORealm()
Returns:
The SSORealm to delegate single sign on requests to.

setSSORealm

public void setSSORealm(SSORealm ssoRealm)
Set the SSORealm. A SSORealm implementation may be set to enable support for SSO.

Parameters:
ssoRealm - The SSORealm to delegate single sign on requests to.

getSingleSignOn

public Credential getSingleSignOn(HttpRequest request,
                                  HttpResponse response)
Description copied from interface: SSORealm
Get SSO credentials. This call is used by an authenticator to check if a SSO exists for a request. If SSO authentiation is successful, the requests UserPrincipal and AuthUser fields are set. If available, the credential used to authenticate the user is returned. If recoverable credentials are not required then null may be return.

Specified by:
getSingleSignOn in interface SSORealm
Parameters:
request - The request to SSO.
response - The response to SSO.
Returns:
A credential if available for SSO authenticated requests.

setSingleSignOn

public void setSingleSignOn(HttpRequest request,
                            HttpResponse response,
                            java.security.Principal principal,
                            Credential credential)
Description copied from interface: SSORealm
Set SSO principal and credential. This call is used by an authenticator to inform the SSO mechanism that a user has signed on. The SSO mechanism should record the principal and credential and update the response with any cookies etc. required.

Specified by:
setSingleSignOn in interface SSORealm
Parameters:
request - The authenticated request.
response - The authenticated response/
principal - The principal that has been authenticated.
credential - The credentials used to authenticate.

clearSingleSignOn

public void clearSingleSignOn(java.lang.String username)
Description copied from interface: SSORealm
Clear SSO for user.

Specified by:
clearSingleSignOn in interface SSORealm
Parameters:
username - The user to clear.


Copyright © 2004 Mortbay Consulting Pty. Ltd. All Rights Reserved.