1 /*
2 * Copyright (C) 2018, Thomas Wolf <thomas.wolf@paranor.ch>
3 * and other copyright owners as documented in the project's IP log.
4 *
5 * This program and the accompanying materials are made available
6 * under the terms of the Eclipse Distribution License v1.0 which
7 * accompanies this distribution, is reproduced below, and is
8 * available at http://www.eclipse.org/org/documents/edl-v10.php
9 *
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials provided
22 * with the distribution.
23 *
24 * - Neither the name of the Eclipse Foundation, Inc. nor the
25 * names of its contributors may be used to endorse or promote
26 * products derived from this software without specific prior
27 * written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
30 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
31 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
32 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
34 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
35 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
36 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
37 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
38 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
40 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
41 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42 */
43 package org.eclipse.jgit.transport.sshd;
44
45 import java.net.InetSocketAddress;
46 import java.net.Proxy;
47 import java.net.ProxySelector;
48 import java.net.SocketAddress;
49 import java.net.URI;
50 import java.net.URISyntaxException;
51 import java.util.List;
52
53 /**
54 * A default implementation of a {@link ProxyDataFactory} based on the standard
55 * {@link java.net.ProxySelector}.
56 *
57 * @since 5.2
58 */
59 public class DefaultProxyDataFactory implements ProxyDataFactory {
60
61 @Override
62 public ProxyData get(InetSocketAddress remoteAddress) {
63 try {
64 List<Proxy> proxies = ProxySelector.getDefault()
65 .select(new URI(Proxy.Type.SOCKS.name(),
66 "//" + remoteAddress.getHostString(), null)); //$NON-NLS-1$
67 ProxyData data = getData(proxies, Proxy.Type.SOCKS);
68 if (data == null) {
69 proxies = ProxySelector.getDefault()
70 .select(new URI(Proxy.Type.HTTP.name(),
71 "//" + remoteAddress.getHostString(), //$NON-NLS-1$
72 null));
73 data = getData(proxies, Proxy.Type.HTTP);
74 }
75 return data;
76 } catch (URISyntaxException e) {
77 return null;
78 }
79 }
80
81 private ProxyData getData(List<Proxy> proxies, Proxy.Type type) {
82 Proxy proxy = proxies.stream().filter(p -> type == p.type()).findFirst()
83 .orElse(null);
84 if (proxy == null) {
85 return null;
86 }
87 SocketAddress address = proxy.address();
88 if (!(address instanceof InetSocketAddress)) {
89 return null;
90 }
91 switch (type) {
92 case HTTP:
93 return new ProxyData(proxy);
94 case SOCKS:
95 return new ProxyData(proxy);
96 default:
97 return null;
98 }
99 }
100 }