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comparison src/org/tmatesoft/hg/internal/remote/SshAuthMethod.java @ 699:a483b2b68a2e

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Provisional APIs and respective implementation for http, https and ssh remote repositories
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 08 Aug 2013 19:18:50 +0200
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698:822f3a83ff57 699:a483b2b68a2e
1 /*
2 * Copyright (c) 2013 TMate Software Ltd
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * For information on how to redistribute this software under
14 * the terms of a license other than GNU General Public License
15 * contact TMate Software at support@hg4j.com
16 */
17 package org.tmatesoft.hg.internal.remote;
18
19 import java.io.CharArrayWriter;
20 import java.io.IOException;
21 import java.io.InputStream;
22 import java.security.cert.X509Certificate;
23 import java.util.Arrays;
24
25 import org.tmatesoft.hg.auth.HgAuthFailedException;
26 import org.tmatesoft.hg.auth.HgAuthMethod;
27
28 import com.trilead.ssh2.Connection;
29
30 /**
31 *
32 * @author Artem Tikhomirov
33 * @author TMate Software Ltd.
34 */
35 public final class SshAuthMethod implements HgAuthMethod {
36
37 private final Connection conn;
38
39 public SshAuthMethod(Connection connection) {
40 conn = connection;
41 }
42
43 public void tryWithUserInfo(String uriUserInfo) throws HgAuthFailedException {
44 assert uriUserInfo != null && uriUserInfo.trim().length() > 0;
45 int colon = uriUserInfo.indexOf(':');
46 if (colon == -1) {
47 String username = uriUserInfo;
48 withPassword(username, null);
49 } else {
50 String username = uriUserInfo.substring(0, colon);
51 String password = uriUserInfo.substring(colon+1);
52 withPassword(username, password);
53 }
54 return;
55 }
56
57 public void noCredentials() throws HgAuthFailedException {
58 try {
59 String username = System.getProperty("user.name");
60 if (!conn.authenticateWithNone(username)) {
61 throw authFailed(username);
62 }
63 } catch (IOException ex) {
64 throw commFailed(ex);
65 }
66 }
67
68 public void withPublicKey(String username, InputStream privateKey, String passphrase) throws HgAuthFailedException {
69 if (username == null) {
70 // FIXME AuthFailure and AuthFailed or similar distinct exceptions to tell true authentication issues from
71 // failures around it.
72 throw new HgAuthFailedException("Need username", null);
73 }
74 if (privateKey == null) {
75 throw new HgAuthFailedException("Need private key", null);
76 }
77 CharArrayWriter a = new CharArrayWriter(2048);
78 int r;
79 try {
80 while((r = privateKey.read()) != -1) {
81 a.append((char) r);
82 }
83 } catch (IOException ex) {
84 throw new HgAuthFailedException("Failed to read private key", ex);
85 }
86 try {
87 boolean success = conn.authenticateWithPublicKey(username, a.toCharArray(), passphrase);
88 if (!success) {
89 throw authFailed(username);
90 }
91 } catch (IOException ex) {
92 throw commFailed(ex);
93 }
94 }
95
96 public void withPassword(String username, String password) throws HgAuthFailedException {
97 if (username == null) {
98 throw new HgAuthFailedException("Need username", null);
99 }
100 try {
101 boolean success;
102 if (password == null) {
103 success = conn.authenticateWithNone(username);
104 } else {
105 success = conn.authenticateWithPassword(username, password);
106 }
107 if (!success) {
108 throw authFailed(username);
109 }
110 } catch (IOException ex) {
111 throw commFailed(ex);
112 }
113 }
114
115 public void withCertificate(X509Certificate[] clientCert) throws HgAuthFailedException {
116 }
117
118 public boolean supportsPublicKey() {
119 return true;
120 }
121
122 public boolean supportsPassword() {
123 return true;
124 }
125
126 public boolean supportsCertificate() {
127 return true;
128 }
129
130 private HgAuthFailedException commFailed(IOException ex) {
131 return new HgAuthFailedException("Communication failure while authenticating", ex);
132 }
133
134 private HgAuthFailedException authFailed(String username) throws IOException {
135 final String[] authMethodsLeft = conn.getRemainingAuthMethods(username);
136 return new HgAuthFailedException(String.format("Failed to authenticate, other methods to try: %s", Arrays.toString(authMethodsLeft)), null);
137 }
138 }