package org.argeo.osgi.useradmin;
   
   import java.util.Dictionary;
   import java.util.Hashtable;
   
   import javax.naming.ldap.LdapName;
   
   import org.osgi.service.useradmin.User;
   
  /**
   * A special user type used during authentication in order to provide the
   * credentials required for scoping the user admin.
   */
  public class AuthenticatingUser implements User {
  	/** From com.sun.security.auth.module.*LoginModule */
  	public final static String SHARED_STATE_NAME = "javax.security.auth.login.name";
  	/** From com.sun.security.auth.module.*LoginModule */
  	public final static String SHARED_STATE_PWD = "javax.security.auth.login.password";
  
  	private final String name;
  	private final Dictionary<String, Object> credentials;
  
  	public AuthenticatingUser(LdapName name) {
  		if (name == null)
  			throw new NullPointerException("Provided name cannot be null.");
  		this.name = name.toString();
  		this.credentials = new Hashtable<>();
  	}
  
  	public AuthenticatingUser(String name, Dictionary<String, Object> credentials) {
  		this.name = name;
  		this.credentials = credentials;
  	}
  
  	public AuthenticatingUser(String name, char[] password) {
  		if (name == null)
  			throw new NullPointerException("Provided name cannot be null.");
  		this.name = name;
  		credentials = new Hashtable<>();
  		credentials.put(SHARED_STATE_NAME, name);
  		byte[] pwd = DigestUtils.charsToBytes(password);
  		credentials.put(SHARED_STATE_PWD, pwd);
  	}
  
  	@Override
  	public String getName() {
  		return name;
  	}
  
  	@Override
  	public int getType() {
  		return User.USER;
  	}
  
  	@SuppressWarnings({ "rawtypes", "unchecked" })
  	@Override
  	public Dictionary getProperties() {
  		throw new UnsupportedOperationException();
  	}
  
  	@SuppressWarnings({ "rawtypes", "unchecked" })
  	@Override
  	public Dictionary getCredentials() {
  		return credentials;
  	}
  
  	@Override
  	public boolean hasCredential(String key, Object value) {
  		throw new UnsupportedOperationException();
  	}
  
  	@Override
  	public int hashCode() {
  		return name.hashCode();
  	}
  
  	@Override
  	public String toString() {
  		return "Authenticating user " + name;
  	}
  
  }