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annotate src/org/tmatesoft/hg/internal/remote/SshAuthMethod.java @ 702:992fa84e7885

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