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annotate src/ch/ethz/ssh2/KnownHosts.java @ 308:42b15aaa7ac7 ganymed

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merge
author Carl Byington <carl@five-ten-sg.com>
date Wed, 30 Jul 2014 14:21:50 -0700
parents 071eccdff8ea
children b40bc65fa09a
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1 /*
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2 * Copyright (c) 2006-2011 Christian Plattner. All rights reserved.
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3 * Please refer to the LICENSE.txt for licensing details.
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4 */
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5
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6 package ch.ethz.ssh2;
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7
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8 import java.io.BufferedReader;
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9 import java.io.CharArrayReader;
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10 import java.io.CharArrayWriter;
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11 import java.io.File;
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12 import java.io.FileReader;
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13 import java.io.IOException;
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14 import java.io.RandomAccessFile;
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15 import java.net.InetAddress;
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16 import java.net.UnknownHostException;
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17 import java.security.DigestException;
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18 import java.security.SecureRandom;
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19 import java.util.ArrayList;
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20 import java.util.LinkedList;
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21 import java.util.List;
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22
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23 import ch.ethz.ssh2.crypto.Base64;
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24 import ch.ethz.ssh2.crypto.digest.Digest;
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25 import ch.ethz.ssh2.crypto.digest.HMAC;
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26 import ch.ethz.ssh2.crypto.digest.MD5;
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27 import ch.ethz.ssh2.crypto.digest.SHA1;
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28 import java.security.KeyPair;
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29 import java.security.PrivateKey;
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30 import java.security.PublicKey;
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31 import java.security.interfaces.DSAPublicKey;
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32 import java.security.interfaces.ECPublicKey;
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33 import java.security.interfaces.RSAPublicKey;
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34 import ch.ethz.ssh2.signature.DSASHA1Verify;
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35 import ch.ethz.ssh2.signature.ECDSASHA2Verify;
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36 import ch.ethz.ssh2.signature.RSASHA1Verify;
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37 import ch.ethz.ssh2.util.StringEncoder;
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38
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39 /**
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40 * The <code>KnownHosts</code> class is a handy tool to verify received server hostkeys
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41 * based on the information in <code>known_hosts</code> files (the ones used by OpenSSH).
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42 * <p/>
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43 * It offers basically an in-memory database for known_hosts entries, as well as some
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44 * helper functions. Entries from a <code>known_hosts</code> file can be loaded at construction time.
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45 * It is also possible to add more keys later (e.g., one can parse different
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46 * <code>known_hosts<code> files).
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47 * <p/>
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48 * It is a thread safe implementation, therefore, you need only to instantiate one
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49 * <code>KnownHosts</code> for your whole application.
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50 *
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51 * @author Christian Plattner
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52 * @version $Id: KnownHosts.java 152 2014-04-28 11:02:23Z dkocher@sudo.ch $
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53 */
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54
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55 public class KnownHosts {
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56 public static final int HOSTKEY_IS_OK = 0;
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57 public static final int HOSTKEY_IS_NEW = 1;
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58 public static final int HOSTKEY_HAS_CHANGED = 2;
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59
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60 private class KnownHostsEntry {
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61 String[] patterns;
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62 PublicKey key;
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63
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64 KnownHostsEntry(String[] patterns, PublicKey key) {
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65 this.patterns = patterns;
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66 this.key = key;
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67 }
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68 }
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70 private final LinkedList<KnownHostsEntry> publicKeys = new LinkedList<KnownHosts.KnownHostsEntry>();
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71
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72 public KnownHosts() {
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73 }
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74
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75 public KnownHosts(char[] knownHostsData) throws IOException {
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76 initialize(knownHostsData);
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77 }
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78
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79 public KnownHosts(String knownHosts) throws IOException {
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80 initialize(new File(knownHosts));
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81 }
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82
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83 public KnownHosts(File knownHosts) throws IOException {
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84 initialize(knownHosts);
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85 }
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86
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87 /**
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88 * Adds a single public key entry to the database. Note: this will NOT add the public key
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89 * to any physical file (e.g., "~/.ssh/known_hosts") - use <code>addHostkeyToFile()</code> for that purpose.
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90 * This method is designed to be used in a {@link ServerHostKeyVerifier}.
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91 *
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92 * @param hostnames a list of hostname patterns - at least one most be specified. Check out the
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93 * OpenSSH sshd man page for a description of the pattern matching algorithm.
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94 * @param serverHostKeyAlgorithm as passed to the {@link ServerHostKeyVerifier}.
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95 * @param serverHostKey as passed to the {@link ServerHostKeyVerifier}.
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96 * @throws IOException
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97 */
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98 public void addHostkey(String hostnames[], String serverHostKeyAlgorithm, byte[] serverHostKey) throws IOException {
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99 if (hostnames == null) {
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100 throw new IllegalArgumentException("hostnames may not be null");
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101 }
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102
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103 if ("ssh-rsa".equals(serverHostKeyAlgorithm)) {
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104 RSAPublicKey rpk = RSASHA1Verify.decodeSSHRSAPublicKey(serverHostKey);
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105
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106 synchronized (publicKeys) {
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107 publicKeys.add(new KnownHostsEntry(hostnames, rpk));
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108 }
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109 }
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110 else if ("ssh-dss".equals(serverHostKeyAlgorithm)) {
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111 DSAPublicKey dpk = DSASHA1Verify.decodeSSHDSAPublicKey(serverHostKey);
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112
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113 synchronized (publicKeys) {
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114 publicKeys.add(new KnownHostsEntry(hostnames, dpk));
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115 }
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116 }
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117 else if (serverHostKeyAlgorithm.startsWith("ecdsa-sha2-")) {
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118 ECPublicKey epk = ECDSASHA2Verify.decodeSSHECDSAPublicKey(serverHostKey);
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119
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120 synchronized (publicKeys) {
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121 publicKeys.add(new KnownHostsEntry(hostnames, epk));
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122 }
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123 }
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124 else {
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125 throw new IOException(String.format("Unknown host key type %s", serverHostKeyAlgorithm));
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126 }
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127 }
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128
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129 /**
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130 * Parses the given known_hosts data and adds entries to the database.
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131 *
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132 * @param knownHostsData
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133 * @throws IOException
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134 */
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135 public void addHostkeys(char[] knownHostsData) throws IOException {
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136 initialize(knownHostsData);
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137 }
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138
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139 /**
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140 * Parses the given known_hosts file and adds entries to the database.
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141 *
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142 * @param knownHosts
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parents:
diff changeset
143 * @throws IOException
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
144 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
145 public void addHostkeys(File knownHosts) throws IOException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
146 initialize(knownHosts);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
147 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
148
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
149 /**
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
150 * Generate the hashed representation of the given hostname. Useful for adding entries
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
151 * with hashed hostnames to a known_hosts file. (see -H option of OpenSSH key-gen).
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
152 *
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
153 * @param hostname
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
154 * @return the hashed representation, e.g., "|1|cDhrv7zwEUV3k71CEPHnhHZezhA=|Xo+2y6rUXo2OIWRAYhBOIijbJMA="
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
155 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
156 public static String createHashedHostname(String hostname) throws IOException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
157 SHA1 sha1 = new SHA1();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
158 byte[] salt = new byte[sha1.getDigestLength()];
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
159 new SecureRandom().nextBytes(salt);
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
160 byte[] hash;
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
161
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
162 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
163 hash = hmacSha1Hash(salt, hostname);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
164 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
165 catch (IOException e) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
166 throw new IOException(e);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
167 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
168
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
169 String base64_salt = new String(Base64.encode(salt));
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
170 String base64_hash = new String(Base64.encode(hash));
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
171 return String.format("|1|%s|%s", base64_salt, base64_hash);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
172 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
173
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
174 private static byte[] hmacSha1Hash(byte[] salt, String hostname) throws IOException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
175 SHA1 sha1 = new SHA1();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
176
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
177 if (salt.length != sha1.getDigestLength()) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
178 throw new IllegalArgumentException("Salt has wrong length (" + salt.length + ")");
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
179 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
180
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
181 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
182 HMAC hmac = new HMAC(sha1, salt, salt.length);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
183 hmac.update(StringEncoder.GetBytes(hostname));
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
184 byte[] dig = new byte[hmac.getDigestLength()];
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
185 hmac.digest(dig);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
186 return dig;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
187 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
188 catch (DigestException e) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
189 throw new IOException(e);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
190 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
191 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
192
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
193 private boolean checkHashed(String entry, String hostname) {
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
194 if (entry.startsWith("|1|") == false) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
195 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
196 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
197
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
198 int delim_idx = entry.indexOf('|', 3);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
199
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
200 if (delim_idx == -1) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
201 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
202 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
203
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
204 String salt_base64 = entry.substring(3, delim_idx);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
205 String hash_base64 = entry.substring(delim_idx + 1);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
206 byte[] salt;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
207 byte[] hash;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
208
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
209 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
210 salt = Base64.decode(salt_base64.toCharArray());
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
211 hash = Base64.decode(hash_base64.toCharArray());
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
212 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
213 catch (IOException e) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
214 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
215 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
216
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
217 SHA1 sha1 = new SHA1();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
218
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
219 if (salt.length != sha1.getDigestLength()) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
220 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
221 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
222
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
223 byte[] dig = new byte[0];
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
224
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
225 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
226 dig = hmacSha1Hash(salt, hostname);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
227 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
228 catch (IOException e) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
229 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
230 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
231
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
232 for (int i = 0; i < dig.length; i++) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
233 if (dig[i] != hash[i]) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
234 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
235 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
236 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
237
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
238 return true;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
239 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
240
286
4656869af8fe start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 285
diff changeset
241 private int checkKey(String remoteHostname, PublicKey remoteKey) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
242 int result = HOSTKEY_IS_NEW;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
243
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
244 synchronized (publicKeys) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
245 for (KnownHostsEntry ke : publicKeys) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
246 if (hostnameMatches(ke.patterns, remoteHostname) == false) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
247 continue;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
248 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
249
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
250 boolean res = matchKeys(ke.key, remoteKey);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
251
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
252 if (res == true) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
253 return HOSTKEY_IS_OK;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
254 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
255
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
256 result = HOSTKEY_HAS_CHANGED;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
257 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
258 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
259
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
260 return result;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
261 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
262
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
263 private List<Object> getAllKeys(String hostname) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
264 List<Object> keys = new ArrayList<Object>();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
265
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
266 synchronized (publicKeys) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
267 for (KnownHostsEntry ke : publicKeys) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
268 if (hostnameMatches(ke.patterns, hostname) == false) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
269 continue;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
270 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
271
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
272 keys.add(ke.key);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
273 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
274 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
275
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
276 return keys;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
277 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
278
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
279 /**
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
280 * Try to find the preferred order of hostkey algorithms for the given hostname.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
281 * Based on the type of hostkey that is present in the internal database
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
282 * (i.e., either <code>ssh-rsa</code> or <code>ssh-dss</code>)
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
283 * an ordered list of hostkey algorithms is returned which can be passed
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
284 * to <code>Connection.setServerHostKeyAlgorithms</code>.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
285 *
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
286 * @param hostname
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
287 * @return <code>null</code> if no key for the given hostname is present or
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
288 * there are keys of multiple types present for the given hostname. Otherwise,
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
289 * an array with hostkey algorithms is returned (i.e., an array of length 2).
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
290 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
291 public String[] getPreferredServerHostkeyAlgorithmOrder(String hostname) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
292 String[] algos = recommendHostkeyAlgorithms(hostname);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
293
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
294 if (algos != null) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
295 return algos;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
296 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
297
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
298 InetAddress[] ipAdresses;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
299
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
300 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
301 ipAdresses = InetAddress.getAllByName(hostname);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
302 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
303 catch (UnknownHostException e) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
304 return null;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
305 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
306
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
307 for (int i = 0; i < ipAdresses.length; i++) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
308 algos = recommendHostkeyAlgorithms(ipAdresses[i].getHostAddress());
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
309
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
310 if (algos != null) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
311 return algos;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
312 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
313 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
314
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
315 return null;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
316 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
317
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
318 private boolean hostnameMatches(String[] hostpatterns, String hostname) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
319 boolean isMatch = false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
320 boolean negate;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
321 hostname = hostname.toLowerCase();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
322
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
323 for (int k = 0; k < hostpatterns.length; k++) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
324 if (hostpatterns[k] == null) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
325 continue;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
326 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
327
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
328 String pattern;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
329
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
330 /* In contrast to OpenSSH we also allow negated hash entries (as well as hashed
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
331 * entries in lines with multiple entries).
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
332 */
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
333
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
334 if ((hostpatterns[k].length() > 0) && (hostpatterns[k].charAt(0) == '!')) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
335 pattern = hostpatterns[k].substring(1);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
336 negate = true;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
337 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
338 else {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
339 pattern = hostpatterns[k];
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
340 negate = false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
341 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
342
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
343 /* Optimize, no need to check this entry */
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
344
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
345 if ((isMatch) && (negate == false)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
346 continue;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
347 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
348
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
349 /* Now compare */
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
350
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
351 if (pattern.charAt(0) == '|') {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
352 if (checkHashed(pattern, hostname)) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
353 if (negate) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
354 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
355 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
356
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
357 isMatch = true;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
358 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
359 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
360 else {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
361 pattern = pattern.toLowerCase();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
362
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
363 if ((pattern.indexOf('?') != -1) || (pattern.indexOf('*') != -1)) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
364 if (pseudoRegex(pattern.toCharArray(), 0, hostname.toCharArray(), 0)) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
365 if (negate) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
366 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
367 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
368
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
369 isMatch = true;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
370 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
371 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
372 else if (pattern.compareTo(hostname) == 0) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
373 if (negate) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
374 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
375 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
376
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
377 isMatch = true;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
378 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
379 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
380 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
381
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
382 return isMatch;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
383 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
384
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
385 private void initialize(char[] knownHostsData) throws IOException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
386 BufferedReader br = new BufferedReader(new CharArrayReader(knownHostsData));
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
387
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
388 while (true) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
389 String line = br.readLine();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
390
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
391 if (line == null) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
392 break;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
393 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
394
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
395 line = line.trim();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
396
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
397 if (line.startsWith("#")) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
398 continue;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
399 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
400
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
401 String[] arr = line.split(" ");
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
402
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
403 if (arr.length >= 3) {
299
4c3a4e88c027 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 298
diff changeset
404 if ((arr[1].compareTo("ssh-rsa") == 0) ||
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
405 (arr[1].compareTo("ssh-dss") == 0) ||
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
406 (arr[1].startsWith("ecdsa-sha2-"))) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
407 String[] hostnames = arr[0].split(",");
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
408 byte[] msg = Base64.decode(arr[2].toCharArray());
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
409
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
410 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
411 addHostkey(hostnames, arr[1], msg);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
412 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
413 catch (IOException e) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
414 continue;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
415 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
416 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
417 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
418 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
419 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
420
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
421 private void initialize(File knownHosts) throws IOException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
422 char[] buff = new char[512];
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
423 CharArrayWriter cw = new CharArrayWriter();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
424 knownHosts.createNewFile();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
425 FileReader fr = new FileReader(knownHosts);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
426
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
427 while (true) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
428 int len = fr.read(buff);
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
429
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
430 if (len < 0) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
431 break;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
432 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
433
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
434 cw.write(buff, 0, len);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
435 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
436
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
437 fr.close();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
438 initialize(cw.toCharArray());
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
439 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
440
284
4ec87de11e71 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
441 private final boolean matchKeys(PublicKey key1, PublicKey key2) {
4ec87de11e71 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
442 return key1.equals(key2);
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
443 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
444
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
445 private boolean pseudoRegex(char[] pattern, int i, char[] match, int j) {
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
446 /* This matching logic is equivalent to the one present in OpenSSH 4.1 */
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
447 while (true) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
448 /* Are we at the end of the pattern? */
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
449 if (pattern.length == i) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
450 return (match.length == j);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
451 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
452
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
453 if (pattern[i] == '*') {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
454 i++;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
455
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
456 if (pattern.length == i) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
457 return true;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
458 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
459
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
460 if ((pattern[i] != '*') && (pattern[i] != '?')) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
461 while (true) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
462 if ((pattern[i] == match[j]) && pseudoRegex(pattern, i + 1, match, j + 1)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
463 return true;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
464 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
465
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
466 j++;
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
467
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
468 if (match.length == j) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
469 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
470 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
471 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
472 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
473
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
474 while (true) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
475 if (pseudoRegex(pattern, i, match, j)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
476 return true;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
477 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
478
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
479 j++;
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
480
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
481 if (match.length == j) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
482 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
483 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
484 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
485 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
486
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
487 if (match.length == j) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
488 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
489 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
490
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
491 if ((pattern[i] != '?') && (pattern[i] != match[j])) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
492 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
493 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
494
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
495 i++;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
496 j++;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
497 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
498 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
499
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
500 private String[] recommendHostkeyAlgorithms(String hostname) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
501 String preferredAlgo = null;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
502 List<Object> keys = getAllKeys(hostname);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
503
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
504 for (Object key : keys) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
505 String thisAlgo;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
506
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
507 if (key instanceof RSAPublicKey) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
508 thisAlgo = "ssh-rsa";
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
509 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
510 else if (key instanceof DSAPublicKey) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
511 thisAlgo = "ssh-dss";
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
512 }
298
ab3a99f11a36 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 287
diff changeset
513 else if (key instanceof ECPublicKey) {
302
beaccc9df37b add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 299
diff changeset
514 ECPublicKey ecPub = (ECPublicKey) key;
298
ab3a99f11a36 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 287
diff changeset
515 String keyType = ECDSASHA2Verify.getCurveName(ecPub.getParams().getCurve().getField().getFieldSize());
ab3a99f11a36 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 287
diff changeset
516 thisAlgo = ECDSASHA2Verify.ECDSA_SHA2_PREFIX + keyType;
ab3a99f11a36 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 287
diff changeset
517 }
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
518 else {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
519 continue;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
520 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
521
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
522 if (preferredAlgo != null) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
523 /* If we find different key types, then return null */
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
524 if (preferredAlgo.compareTo(thisAlgo) != 0) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
525 return null;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
526 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
527 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
528 else {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
529 preferredAlgo = thisAlgo;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
530 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
531 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
532
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
533 /* If we did not find anything that we know of, return null */
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
534
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
535 if (preferredAlgo == null) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
536 return null;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
537 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
538
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
539 /* Now put the preferred algo to the start of the array.
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
540 * You may ask yourself why we do it that way - basically, we could just
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
541 * return only the preferred algorithm: since we have a saved key of that
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
542 * type (sent earlier from the remote host), then that should work out.
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
543 * However, imagine that the server is (for whatever reasons) not offering
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
544 * that type of hostkey anymore (e.g., "ssh-rsa" was disabled and
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
545 * now "ssh-dss" is being used). If we then do not let the server send us
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
546 * a fresh key of the new type, then we shoot ourself into the foot:
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
547 * the connection cannot be established and hence the user cannot decide
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
548 * if he/she wants to accept the new key.
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
549 */
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
550
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
551 if (preferredAlgo.equals("ssh-rsa")) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
552 return new String[] {"ssh-rsa", "ssh-dss", "ecdsa-sha2-nistp256"};
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
553 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
554
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
555 return new String[] {"ssh-dss", "ssh-rsa", "ecdsa-sha2-nistp256"};
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
556 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
557
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
558 /**
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
559 * Checks the internal hostkey database for the given hostkey.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
560 * If no matching key can be found, then the hostname is resolved to an IP address
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
561 * and the search is repeated using that IP address.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
562 *
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
563 * @param hostname the server's hostname, will be matched with all hostname patterns
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
564 * @param serverHostKeyAlgorithm type of hostkey, either <code>ssh-rsa</code> or <code>ssh-dss</code>
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
565 * @param serverHostKey the key blob
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
566 * @return <ul>
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
567 * <li><code>HOSTKEY_IS_OK</code>: the given hostkey matches an entry for the given hostname</li>
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
568 * <li><code>HOSTKEY_IS_NEW</code>: no entries found for this hostname and this type of hostkey</li>
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
569 * <li><code>HOSTKEY_HAS_CHANGED</code>: hostname is known, but with another key of the same type
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
570 * (man-in-the-middle attack?)</li>
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
571 * </ul>
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
572 * @throws IOException if the supplied key blob cannot be parsed or does not match the given hostkey type.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
573 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
574 public int verifyHostkey(String hostname, String serverHostKeyAlgorithm, byte[] serverHostKey) throws IOException {
287
db9b028016de start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 286
diff changeset
575 PublicKey remoteKey;
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
576
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
577 if ("ssh-rsa".equals(serverHostKeyAlgorithm)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
578 remoteKey = RSASHA1Verify.decodeSSHRSAPublicKey(serverHostKey);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
579 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
580 else if ("ssh-dss".equals(serverHostKeyAlgorithm)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
581 remoteKey = DSASHA1Verify.decodeSSHDSAPublicKey(serverHostKey);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
582 }
287
db9b028016de start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 286
diff changeset
583 else if (serverHostKeyAlgorithm.startsWith("ecdsa-sha2-")) {
db9b028016de start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 286
diff changeset
584 remoteKey = ECDSASHA2Verify.decodeSSHECDSAPublicKey(serverHostKey);
db9b028016de start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 286
diff changeset
585 }
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
586 else {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
587 throw new IllegalArgumentException("Unknown hostkey type " + serverHostKeyAlgorithm);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
588 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
589
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
590 int result = checkKey(hostname, remoteKey);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
591
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
592 if (result == HOSTKEY_IS_OK) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
593 return result;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
594 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
595
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
596 InetAddress[] ipAdresses;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
597
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
598 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
599 ipAdresses = InetAddress.getAllByName(hostname);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
600 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
601 catch (UnknownHostException e) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
602 return result;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
603 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
604
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
605 for (int i = 0; i < ipAdresses.length; i++) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
606 int newresult = checkKey(ipAdresses[i].getHostAddress(), remoteKey);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
607
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
608 if (newresult == HOSTKEY_IS_OK) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
609 return newresult;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
610 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
611
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
612 if (newresult == HOSTKEY_HAS_CHANGED) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
613 result = HOSTKEY_HAS_CHANGED;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
614 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
615 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
616
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
617 return result;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
618 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
619
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
620 /**
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
621 * Adds a single public key entry to the a known_hosts file.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
622 * This method is designed to be used in a {@link ServerHostKeyVerifier}.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
623 *
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
624 * @param knownHosts the file where the publickey entry will be appended.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
625 * @param hostnames a list of hostname patterns - at least one most be specified. Check out the
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
626 * OpenSSH sshd man page for a description of the pattern matching algorithm.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
627 * @param serverHostKeyAlgorithm as passed to the {@link ServerHostKeyVerifier}.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
628 * @param serverHostKey as passed to the {@link ServerHostKeyVerifier}.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
629 * @throws IOException
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
630 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
631 public static void addHostkeyToFile(File knownHosts, String[] hostnames, String serverHostKeyAlgorithm,
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
632 byte[] serverHostKey) throws IOException {
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
633 if ((hostnames == null) || (hostnames.length == 0)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
634 throw new IllegalArgumentException("Need at least one hostname specification");
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
635 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
636
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
637 if ((serverHostKeyAlgorithm == null) || (serverHostKey == null)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
638 throw new IllegalArgumentException();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
639 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
640
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
641 CharArrayWriter writer = new CharArrayWriter();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
642
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
643 for (int i = 0; i < hostnames.length; i++) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
644 if (i != 0) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
645 writer.write(',');
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
646 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
647
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
648 writer.write(hostnames[i]);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
649 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
650
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
651 writer.write(' ');
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
652 writer.write(serverHostKeyAlgorithm);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
653 writer.write(' ');
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
654 writer.write(Base64.encode(serverHostKey));
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
655 writer.write("\n");
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
656 char[] entry = writer.toCharArray();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
657 RandomAccessFile raf = new RandomAccessFile(knownHosts, "rw");
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
658 long len = raf.length();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
659
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
660 if (len > 0) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
661 raf.seek(len - 1);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
662 int last = raf.read();
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
663
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
664 if (last != '\n') {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
665 raf.write('\n');
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
666 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
667 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
668
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
669 raf.write(StringEncoder.GetBytes(new String(entry)));
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
670 raf.close();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
671 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
672
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
673 /**
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
674 * Generates a "raw" fingerprint of a hostkey.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
675 *
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
676 * @param type either "md5" or "sha1"
298
ab3a99f11a36 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 287
diff changeset
677 * @param keyType either "ssh-rsa" or "ssh-dss" or "ecdsa-sha2..."
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
678 * @param hostkey the hostkey
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
679 * @return the raw fingerprint
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
680 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
681 static private byte[] rawFingerPrint(String type, String keyType, byte[] hostkey) throws IOException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
682 Digest dig;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
683
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
684 if ("md5".equals(type)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
685 dig = new MD5();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
686 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
687 else if ("sha1".equals(type)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
688 dig = new SHA1();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
689 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
690 else {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
691 throw new IllegalArgumentException("Unknown hash type " + type);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
692 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
693
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
694 if ("ssh-rsa".equals(keyType)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
695 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
696 else if ("ssh-dss".equals(keyType)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
697 }
299
4c3a4e88c027 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 298
diff changeset
698 else if (keyType.startsWith("ecdsa-sha2-")) {
298
ab3a99f11a36 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 287
diff changeset
699 }
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
700 else {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
701 throw new IllegalArgumentException("Unknown key type " + keyType);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
702 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
703
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
704 if (hostkey == null) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
705 throw new IllegalArgumentException("hostkey is null");
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
706 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
707
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
708 dig.update(hostkey);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
709 byte[] res = new byte[dig.getDigestLength()];
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
710
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
711 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
712 dig.digest(res);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
713 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
714 catch (DigestException e) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
715 throw new IOException(e);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
716 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
717
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
718 return res;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
719 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
720
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
721 /**
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
722 * Convert a raw fingerprint to hex representation (XX:YY:ZZ...).
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
723 *
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
724 * @param fingerprint raw fingerprint
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
725 * @return the hex representation
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
726 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
727 static private String rawToHexFingerprint(byte[] fingerprint) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
728 final char[] alpha = "0123456789abcdef".toCharArray();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
729 StringBuilder sb = new StringBuilder();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
730
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
731 for (int i = 0; i < fingerprint.length; i++) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
732 if (i != 0) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
733 sb.append(':');
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
734 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
735
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
736 int b = fingerprint[i] & 0xff;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
737 sb.append(alpha[b >> 4]);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
738 sb.append(alpha[b & 15]);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
739 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
740
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
741 return sb.toString();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
742 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
743
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
744 /**
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
745 * Convert a raw fingerprint to bubblebabble representation.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
746 *
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
747 * @param raw raw fingerprint
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
748 * @return the bubblebabble representation
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
749 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
750 static private String rawToBubblebabbleFingerprint(byte[] raw) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
751 final char[] v = "aeiouy".toCharArray();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
752 final char[] c = "bcdfghklmnprstvzx".toCharArray();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
753 StringBuilder sb = new StringBuilder();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
754 int seed = 1;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
755 int rounds = (raw.length / 2) + 1;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
756 sb.append('x');
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
757
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
758 for (int i = 0; i < rounds; i++) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
759 if (((i + 1) < rounds) || ((raw.length) % 2 != 0)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
760 sb.append(v[(((raw[2 * i] >> 6) & 3) + seed) % 6]);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
761 sb.append(c[(raw[2 * i] >> 2) & 15]);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
762 sb.append(v[((raw[2 * i] & 3) + (seed / 6)) % 6]);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
763
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
764 if ((i + 1) < rounds) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
765 sb.append(c[(((raw[(2 * i) + 1])) >> 4) & 15]);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
766 sb.append('-');
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
767 sb.append(c[(((raw[(2 * i) + 1]))) & 15]);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
768 // As long as seed >= 0, seed will be >= 0 afterwards
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
769 seed = ((seed * 5) + (((raw[2 * i] & 0xff) * 7) + (raw[(2 * i) + 1] & 0xff))) % 36;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
770 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
771 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
772 else {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
773 sb.append(v[seed % 6]); // seed >= 0, therefore index positive
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
774 sb.append('x');
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
775 sb.append(v[seed / 6]);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
776 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
777 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
778
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
779 sb.append('x');
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
780 return sb.toString();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
781 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
782
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
783 /**
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
784 * Convert a ssh2 key-blob into a human readable hex fingerprint.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
785 * Generated fingerprints are identical to those generated by OpenSSH.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
786 * <p/>
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
787 * Example fingerprint: d0:cb:76:19:99:5a:03:fc:73:10:70:93:f2:44:63:47.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
788 *
298
ab3a99f11a36 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 287
diff changeset
789 * @param keytype either "ssh-rsa" or "ssh-dss" or "ecdsa-sha2..."
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
790 * @param publickey key blob
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
791 * @return Hex fingerprint
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
792 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
793 public static String createHexFingerprint(String keytype, byte[] publickey) throws IOException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
794 byte[] raw = rawFingerPrint("md5", keytype, publickey);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
795 return rawToHexFingerprint(raw);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
796 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
797
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
798 /**
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
799 * Convert a ssh2 key-blob into a human readable bubblebabble fingerprint.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
800 * The used bubblebabble algorithm (taken from OpenSSH) generates fingerprints
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
801 * that are easier to remember for humans.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
802 * <p/>
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
803 * Example fingerprint: xofoc-bubuz-cazin-zufyl-pivuk-biduk-tacib-pybur-gonar-hotat-lyxux.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
804 *
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
805 * @param keytype either "ssh-rsa" or "ssh-dss"
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
806 * @param publickey key data
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
807 * @return Bubblebabble fingerprint
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
808 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
809 public static String createBubblebabbleFingerprint(String keytype, byte[] publickey) throws IOException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
810 byte[] raw = rawFingerPrint("sha1", keytype, publickey);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
811 return rawToBubblebabbleFingerprint(raw);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
812 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
813 }