| /* |
| * Copyright (C) 2018, Thomas Wolf <thomas.wolf@paranor.ch> |
| * and other copyright owners as documented in the project's IP log. |
| * |
| * This program and the accompanying materials are made available |
| * under the terms of the Eclipse Distribution License v1.0 which |
| * accompanies this distribution, is reproduced below, and is |
| * available at http://www.eclipse.org/org/documents/edl-v10.php |
| * |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * |
| * - Neither the name of the Eclipse Foundation, Inc. nor the |
| * names of its contributors may be used to endorse or promote |
| * products derived from this software without specific prior |
| * written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
| * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| package org.eclipse.jgit.internal.transport.sshd; |
| |
| import java.io.IOException; |
| import java.net.URISyntaxException; |
| import java.security.GeneralSecurityException; |
| import java.util.Arrays; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import org.eclipse.jgit.annotations.NonNull; |
| import org.eclipse.jgit.transport.CredentialsProvider; |
| import org.eclipse.jgit.transport.URIish; |
| import org.eclipse.jgit.transport.sshd.KeyPasswordProvider; |
| |
| /** |
| * A bridge from sshd's {@link RepeatingFilePasswordProvider} to our |
| * {@link KeyPasswordProvider} API. |
| */ |
| public class PasswordProviderWrapper implements RepeatingFilePasswordProvider { |
| |
| private final KeyPasswordProvider delegate; |
| |
| private Map<String, AtomicInteger> counts = new ConcurrentHashMap<>(); |
| |
| /** |
| * @param delegate |
| */ |
| public PasswordProviderWrapper(@NonNull KeyPasswordProvider delegate) { |
| this.delegate = delegate; |
| } |
| |
| @Override |
| public void setAttempts(int numberOfPasswordPrompts) { |
| delegate.setAttempts(numberOfPasswordPrompts); |
| } |
| |
| @Override |
| public int getAttempts() { |
| return delegate.getAttempts(); |
| } |
| |
| @Override |
| public String getPassword(String resourceKey) throws IOException { |
| int attempt = counts |
| .computeIfAbsent(resourceKey, k -> new AtomicInteger()).get(); |
| char[] passphrase = delegate.getPassphrase(toUri(resourceKey), attempt); |
| if (passphrase == null) { |
| return null; |
| } |
| try { |
| return new String(passphrase); |
| } finally { |
| Arrays.fill(passphrase, '\000'); |
| } |
| } |
| |
| @Override |
| public ResourceDecodeResult handleDecodeAttemptResult(String resourceKey, |
| String password, Exception err) |
| throws IOException, GeneralSecurityException { |
| AtomicInteger count = counts.get(resourceKey); |
| int numberOfAttempts = count == null ? 0 : count.incrementAndGet(); |
| ResourceDecodeResult result = null; |
| try { |
| if (delegate.keyLoaded(toUri(resourceKey), numberOfAttempts, err)) { |
| result = ResourceDecodeResult.RETRY; |
| } else { |
| result = ResourceDecodeResult.TERMINATE; |
| } |
| } finally { |
| if (result != ResourceDecodeResult.RETRY) { |
| counts.remove(resourceKey); |
| } |
| } |
| return result; |
| } |
| |
| /** |
| * Creates a {@link URIish} from a given string. The |
| * {@link CredentialsProvider} uses uris as resource identifications. |
| * |
| * @param resourceKey |
| * to convert |
| * @return the uri |
| */ |
| private URIish toUri(String resourceKey) { |
| try { |
| return new URIish(resourceKey); |
| } catch (URISyntaxException e) { |
| return new URIish().setPath(resourceKey); // Doesn't check!! |
| } |
| } |
| |
| } |