+++ /dev/null
-/*******************************************************************************
- * Copyright (c) 2012 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
- *
- * Contributors:
- * Sonatype, Inc. - initial API and implementation
- *******************************************************************************/
-package org.eclipse.aether.repository;
-
-import java.io.UnsupportedEncodingException;
-import java.security.MessageDigest;
-import java.security.NoSuchAlgorithmException;
-
-import org.eclipse.aether.RepositorySystemSession;
-
-/**
- * A helper to calculate a fingerprint/digest for the authentication data of a repository/proxy. Such a fingerprint can
- * be used to detect changes in the authentication data across JVM restarts without exposing sensitive information.
- */
-public final class AuthenticationDigest
-{
-
- private final MessageDigest digest;
-
- private final RepositorySystemSession session;
-
- private final RemoteRepository repository;
-
- private final Proxy proxy;
-
- /**
- * Gets the fingerprint for the authentication of the specified repository.
- *
- * @param session The repository system session during which the fingerprint is requested, must not be {@code null}.
- * @param repository The repository whose authentication is to be fingerprinted, must not be {@code null}.
- * @return The fingerprint of the repository authentication or an empty string if no authentication is configured,
- * never {@code null}.
- */
- public static String forRepository( RepositorySystemSession session, RemoteRepository repository )
- {
- String digest = "";
- Authentication auth = repository.getAuthentication();
- if ( auth != null )
- {
- AuthenticationDigest authDigest = new AuthenticationDigest( session, repository, null );
- auth.digest( authDigest );
- digest = authDigest.digest();
- }
- return digest;
- }
-
- /**
- * Gets the fingerprint for the authentication of the specified repository's proxy.
- *
- * @param session The repository system session during which the fingerprint is requested, must not be {@code null}.
- * @param repository The repository whose proxy authentication is to be fingerprinted, must not be {@code null}.
- * @return The fingerprint of the proxy authentication or an empty string if no proxy is present or if no proxy
- * authentication is configured, never {@code null}.
- */
- public static String forProxy( RepositorySystemSession session, RemoteRepository repository )
- {
- String digest = "";
- Proxy proxy = repository.getProxy();
- if ( proxy != null )
- {
- Authentication auth = proxy.getAuthentication();
- if ( auth != null )
- {
- AuthenticationDigest authDigest = new AuthenticationDigest( session, repository, proxy );
- auth.digest( authDigest );
- digest = authDigest.digest();
- }
- }
- return digest;
- }
-
- private AuthenticationDigest( RepositorySystemSession session, RemoteRepository repository, Proxy proxy )
- {
- this.session = session;
- this.repository = repository;
- this.proxy = proxy;
- digest = newDigest();
- }
-
- private static MessageDigest newDigest()
- {
- try
- {
- return MessageDigest.getInstance( "SHA-1" );
- }
- catch ( NoSuchAlgorithmException e )
- {
- try
- {
- return MessageDigest.getInstance( "MD5" );
- }
- catch ( NoSuchAlgorithmException ne )
- {
- throw new IllegalStateException( ne );
- }
- }
- }
-
- /**
- * Gets the repository system session during which the authentication fingerprint is calculated.
- *
- * @return The repository system session, never {@code null}.
- */
- public RepositorySystemSession getSession()
- {
- return session;
- }
-
- /**
- * Gets the repository requiring authentication. If {@link #getProxy()} is not {@code null}, the data gathered by
- * this authentication digest does not apply to the repository's host but rather the proxy.
- *
- * @return The repository to be contacted, never {@code null}.
- */
- public RemoteRepository getRepository()
- {
- return repository;
- }
-
- /**
- * Gets the proxy (if any) to be authenticated with.
- *
- * @return The proxy or {@code null} if authenticating directly with the repository's host.
- */
- public Proxy getProxy()
- {
- return proxy;
- }
-
- /**
- * Updates the digest with the specified strings.
- *
- * @param strings The strings to update the digest with, may be {@code null} or contain {@code null} elements.
- */
- public void update( String... strings )
- {
- if ( strings != null )
- {
- for ( String string : strings )
- {
- if ( string != null )
- {
- try
- {
- digest.update( string.getBytes( "UTF-8" ) );
- }
- catch ( UnsupportedEncodingException e )
- {
- throw new IllegalStateException( e );
- }
- }
- }
- }
- }
-
- /**
- * Updates the digest with the specified characters.
- *
- * @param chars The characters to update the digest with, may be {@code null}.
- */
- public void update( char... chars )
- {
- if ( chars != null )
- {
- for ( char c : chars )
- {
- digest.update( (byte) ( c >> 8 ) );
- digest.update( (byte) ( c & 0xFF ) );
- }
- }
- }
-
- /**
- * Updates the digest with the specified bytes.
- *
- * @param bytes The bytes to update the digest with, may be {@code null}.
- */
- public void update( byte... bytes )
- {
- if ( bytes != null )
- {
- digest.update( bytes );
- }
- }
-
- private String digest()
- {
- byte[] bytes = digest.digest();
- StringBuilder buffer = new StringBuilder( bytes.length * 2 );
- for ( byte aByte : bytes )
- {
- int b = aByte & 0xFF;
- if ( b < 0x10 )
- {
- buffer.append( '0' );
- }
- buffer.append( Integer.toHexString( b ) );
- }
- return buffer.toString();
- }
-
-}
projects / gpl / argeo-slc.git / blobdiff