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package org.sonatype.aether.repository;
/*******************************************************************************
* Copyright (c) 2010-2011 Sonatype, Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*******************************************************************************/
import java.util.Arrays;
/**
* The authentication to use for accessing a protected resource. Note: Instances of this class are immutable
* and the exposed mutators return new objects rather than changing the current instance.
*
* @author Benjamin Bentmann
*/
public final class Authentication
{
private final String username;
private final char[] password;
private final String privateKeyFile;
private final char[] passphrase;
private static char[] toChars( String str )
{
return ( str != null ) ? str.toCharArray() : null;
}
private static String toStr( char[] chars )
{
return ( chars != null ) ? new String( chars ) : null;
}
private static char[] clone( char[] chars )
{
return ( chars != null ) ? chars.clone() : null;
}
private Authentication( String username, String privateKeyFile, char[] password, char[] passphrase )
{
// NOTE: This constructor assumes ownership/immutability of the provided arrays
this.username = username;
this.password = password;
this.privateKeyFile = privateKeyFile;
this.passphrase = passphrase;
}
/**
* Creates a new authentication with the specified properties
*
* @param username The username, may be {@code null}.
* @param password The password, may be {@code null}.
* @param privateKeyFile The path to the private key file, may be {@code null}.
* @param passphrase The passphrase for the private key file, may be {@code null}.
*/
public Authentication( String username, char[] password, String privateKeyFile, char[] passphrase )
{
this( username, privateKeyFile, clone( password ), clone( passphrase ) );
}
/**
* Creates a new authentication with the specified properties
*
* @param username The username, may be {@code null}.
* @param password The password, may be {@code null}.
* @param privateKeyFile The path to the private key file, may be {@code null}.
* @param passphrase The passphrase for the private key file, may be {@code null}.
*/
public Authentication( String username, String password, String privateKeyFile, String passphrase )
{
this( username, privateKeyFile, toChars( password ), toChars( passphrase ) );
}
/**
* Creates a basic username+password authentication.
*
* @param username The username, may be {@code null}.
* @param password The password, may be {@code null}.
*/
public Authentication( String username, String password )
{
this( username, (String) null, toChars( password ), null );
}
/**
* Creates a basic username+password authentication.
*
* @param username The username, may be {@code null}.
* @param password The password, may be {@code null}.
*/
public Authentication( String username, char[] password )
{
this( username, password, null, null );
}
/**
* Gets the username.
*
* @return The username or {@code null} if none.
*/
public String getUsername()
{
return username;
}
/**
* Sets the username to use for authentication.
*
* @param username The username, may be {@code null}.
* @return The new authentication, never {@code null}.
*/
public Authentication setUsername( String username )
{
if ( eq( this.username, username ) )
{
return this;
}
return new Authentication( username, privateKeyFile, password, passphrase );
}
/**
* Gets the password.
*
* @return The password or {@code null} if none.
*/
public String getPassword()
{
return toStr( password );
}
/**
* Sets the password to use for authentication.
*
* @param password The password, may be {@code null}.
* @return The new authentication, never {@code null}.
*/
public Authentication setPassword( String password )
{
return setPasswordInternal( toChars( password ) );
}
/**
* Sets the password to use for authentication.
*
* @param password The password, may be {@code null}.
* @return The new authentication, never {@code null}.
*/
public Authentication setPassword( char[] password )
{
return setPasswordInternal( clone( password ) );
}
private Authentication setPasswordInternal( char[] password )
{
if ( Arrays.equals( this.password, password ) )
{
return this;
}
return new Authentication( username, privateKeyFile, password, passphrase );
}
/**
* Gets the path to the private key file to use for authentication.
*
* @return The path to the private key file or {@code null} if none.
*/
public String getPrivateKeyFile()
{
return privateKeyFile;
}
/**
* Sets the path to the private key file to use for authentication.
*
* @param privateKeyFile The path to the private key file, may be {@code null}.
* @return The new authentication, never {@code null}.
*/
public Authentication setPrivateKeyFile( String privateKeyFile )
{
if ( eq( this.privateKeyFile, privateKeyFile ) )
{
return this;
}
return new Authentication( username, privateKeyFile, password, passphrase );
}
/**
* Gets the passphrase for the private key.
*
* @return The passphrase for the private key or {@code null} if none.
*/
public String getPassphrase()
{
return toStr( passphrase );
}
/**
* Sets the passphrase for the private key file.
*
* @param passphrase The passphrase for the private key file, may be {@code null}.
* @return The new authentication, never {@code null}.
*/
public Authentication setPassphrase( String passphrase )
{
return setPassphraseInternal( toChars( passphrase ) );
}
/**
* Sets the passphrase for the private key file.
*
* @param passphrase The passphrase for the private key file, may be {@code null}.
* @return The new authentication, never {@code null}.
*/
public Authentication setPassphrase( char[] passphrase )
{
return setPassphraseInternal( clone( passphrase ) );
}
private Authentication setPassphraseInternal( char[] passphrase )
{
if ( Arrays.equals( this.passphrase, passphrase ) )
{
return this;
}
return new Authentication( username, privateKeyFile, password, passphrase );
}
@Override
public String toString()
{
return getUsername();
}
@Override
public boolean equals( Object obj )
{
if ( this == obj )
{
return true;
}
if ( obj == null || !getClass().equals( obj.getClass() ) )
{
return false;
}
Authentication that = (Authentication) obj;
return eq( username, that.username ) && Arrays.equals( password, that.password )
&& eq( privateKeyFile, that.privateKeyFile ) && Arrays.equals( passphrase, passphrase );
}
private static boolean eq( T s1, T s2 )
{
return s1 != null ? s1.equals( s2 ) : s2 == null;
}
@Override
public int hashCode()
{
int hash = 17;
hash = hash * 31 + hash( username );
hash = hash * 31 + Arrays.hashCode( password );
hash = hash * 31 + hash( privateKeyFile );
return hash;
}
private static int hash( Object obj )
{
return obj != null ? obj.hashCode() : 0;
}
}
