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annotate src/ch/ethz/ssh2/KnownHosts.java @ 374:597138203c15

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debug kex error
author Carl Byington <carl@five-ten-sg.com>
date Mon, 04 Aug 2014 14:02:00 -0700
parents b40bc65fa09a
children
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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.util.ArrayList;
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19 import java.util.LinkedList;
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20 import java.util.List;
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21
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22 import ch.ethz.ssh2.crypto.Base64;
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23 import ch.ethz.ssh2.crypto.SecureRandomFix;
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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
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29 import java.security.KeyPair;
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30 import java.security.PrivateKey;
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31 import java.security.PublicKey;
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32 import java.security.interfaces.DSAPublicKey;
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33 import java.security.interfaces.ECPublicKey;
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34 import java.security.interfaces.RSAPublicKey;
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35 import ch.ethz.ssh2.signature.DSASHA1Verify;
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36 import ch.ethz.ssh2.signature.ECDSASHA2Verify;
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37 import ch.ethz.ssh2.signature.RSASHA1Verify;
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38 import ch.ethz.ssh2.util.StringEncoder;
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39
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40 /**
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41 * The <code>KnownHosts</code> class is a handy tool to verify received server hostkeys
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42 * based on the information in <code>known_hosts</code> files (the ones used by OpenSSH).
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43 * <p/>
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44 * It offers basically an in-memory database for known_hosts entries, as well as some
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45 * helper functions. Entries from a <code>known_hosts</code> file can be loaded at construction time.
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46 * It is also possible to add more keys later (e.g., one can parse different
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47 * <code>known_hosts<code> files).
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48 * <p/>
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49 * It is a thread safe implementation, therefore, you need only to instantiate one
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50 * <code>KnownHosts</code> for your whole application.
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51 *
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52 * @author Christian Plattner
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53 * @version $Id: KnownHosts.java 152 2014-04-28 11:02:23Z dkocher@sudo.ch $
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54 */
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55
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56 public class KnownHosts {
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57 public static final int HOSTKEY_IS_OK = 0;
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58 public static final int HOSTKEY_IS_NEW = 1;
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59 public static final int HOSTKEY_HAS_CHANGED = 2;
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60
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61 private class KnownHostsEntry {
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62 String[] patterns;
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63 PublicKey key;
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64
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65 KnownHostsEntry(String[] patterns, PublicKey key) {
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66 this.patterns = patterns;
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67 this.key = key;
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68 }
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69 }
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71 private final LinkedList<KnownHostsEntry> publicKeys = new LinkedList<KnownHosts.KnownHostsEntry>();
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72
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73 public KnownHosts() {
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74 }
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75
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76 public KnownHosts(char[] knownHostsData) throws IOException {
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77 initialize(knownHostsData);
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78 }
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79
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80 public KnownHosts(String knownHosts) throws IOException {
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81 initialize(new File(knownHosts));
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82 }
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83
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84 public KnownHosts(File knownHosts) throws IOException {
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85 initialize(knownHosts);
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86 }
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87
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88 /**
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89 * Adds a single public key entry to the database. Note: this will NOT add the public key
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90 * to any physical file (e.g., "~/.ssh/known_hosts") - use <code>addHostkeyToFile()</code> for that purpose.
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91 * This method is designed to be used in a {@link ServerHostKeyVerifier}.
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92 *
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93 * @param hostnames a list of hostname patterns - at least one most be specified. Check out the
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94 * OpenSSH sshd man page for a description of the pattern matching algorithm.
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95 * @param serverHostKeyAlgorithm as passed to the {@link ServerHostKeyVerifier}.
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96 * @param serverHostKey as passed to the {@link ServerHostKeyVerifier}.
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97 * @throws IOException
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98 */
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99 public void addHostkey(String hostnames[], String serverHostKeyAlgorithm, byte[] serverHostKey) throws IOException {
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100 if (hostnames == null) {
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101 throw new IllegalArgumentException("hostnames may not be null");
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102 }
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103
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104 if ("ssh-rsa".equals(serverHostKeyAlgorithm)) {
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105 RSAPublicKey rpk = RSASHA1Verify.decodeSSHRSAPublicKey(serverHostKey);
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106
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107 synchronized (publicKeys) {
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108 publicKeys.add(new KnownHostsEntry(hostnames, rpk));
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109 }
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110 }
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111 else if ("ssh-dss".equals(serverHostKeyAlgorithm)) {
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112 DSAPublicKey dpk = DSASHA1Verify.decodeSSHDSAPublicKey(serverHostKey);
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113
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114 synchronized (publicKeys) {
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115 publicKeys.add(new KnownHostsEntry(hostnames, dpk));
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116 }
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117 }
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118 else if (serverHostKeyAlgorithm.startsWith("ecdsa-sha2-")) {
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119 ECPublicKey epk = ECDSASHA2Verify.decodeSSHECDSAPublicKey(serverHostKey);
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120
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121 synchronized (publicKeys) {
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122 publicKeys.add(new KnownHostsEntry(hostnames, epk));
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123 }
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124 }
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125 else {
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126 throw new IOException(String.format("Unknown host key type %s", serverHostKeyAlgorithm));
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127 }
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128 }
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129
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130 /**
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131 * Parses the given known_hosts data and adds entries to the database.
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132 *
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133 * @param knownHostsData
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134 * @throws IOException
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135 */
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136 public void addHostkeys(char[] knownHostsData) throws IOException {
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137 initialize(knownHostsData);
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138 }
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139
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140 /**
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141 * Parses the given known_hosts file and adds entries to the database.
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142 *
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parents:
diff changeset
143 * @param knownHosts
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
144 * @throws IOException
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
145 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
146 public void addHostkeys(File knownHosts) throws IOException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
147 initialize(knownHosts);
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 /**
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
151 * 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
152 * 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
153 *
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
154 * @param hostname
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
155 * @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
156 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
157 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
158 SHA1 sha1 = new SHA1();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
159 byte[] salt = new byte[sha1.getDigestLength()];
344
b40bc65fa09a compensate for SecureRandom bug on older devices
Carl Byington <carl@five-ten-sg.com>
parents: 307
diff changeset
160 new SecureRandomFix().nextBytes(salt);
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
161 byte[] hash;
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
162
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
163 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
164 hash = hmacSha1Hash(salt, hostname);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
165 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
166 catch (IOException e) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
167 throw new IOException(e);
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
170 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
171 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
172 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
173 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
174
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
175 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
176 SHA1 sha1 = new SHA1();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
177
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
178 if (salt.length != sha1.getDigestLength()) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
179 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
180 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
181
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
182 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
183 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
184 hmac.update(StringEncoder.GetBytes(hostname));
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
185 byte[] dig = new byte[hmac.getDigestLength()];
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
186 hmac.digest(dig);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
187 return dig;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
188 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
189 catch (DigestException e) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
190 throw new IOException(e);
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
194 private boolean checkHashed(String entry, String hostname) {
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
195 if (entry.startsWith("|1|") == false) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
196 return false;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
199 int delim_idx = entry.indexOf('|', 3);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
200
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
201 if (delim_idx == -1) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
202 return false;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
205 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
206 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
207 byte[] salt;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
208 byte[] hash;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
209
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
210 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
211 salt = Base64.decode(salt_base64.toCharArray());
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
212 hash = Base64.decode(hash_base64.toCharArray());
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
213 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
214 catch (IOException e) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
215 return false;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
218 SHA1 sha1 = new SHA1();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
219
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
220 if (salt.length != sha1.getDigestLength()) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
221 return false;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
224 byte[] dig = new byte[0];
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
225
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
226 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
227 dig = hmacSha1Hash(salt, hostname);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
228 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
229 catch (IOException e) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
230 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
231 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
232
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
233 for (int i = 0; i < dig.length; i++) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
234 if (dig[i] != hash[i]) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
235 return false;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
239 return true;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
240 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
241
286
4656869af8fe start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 285
diff changeset
242 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
243 int result = HOSTKEY_IS_NEW;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
244
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
245 synchronized (publicKeys) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
246 for (KnownHostsEntry ke : publicKeys) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
247 if (hostnameMatches(ke.patterns, remoteHostname) == false) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
248 continue;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
251 boolean res = matchKeys(ke.key, remoteKey);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
252
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
253 if (res == true) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
254 return HOSTKEY_IS_OK;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
257 result = HOSTKEY_HAS_CHANGED;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
258 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
259 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
260
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
261 return result;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
264 private List<Object> getAllKeys(String hostname) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
265 List<Object> keys = new ArrayList<Object>();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
266
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
267 synchronized (publicKeys) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
268 for (KnownHostsEntry ke : publicKeys) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
269 if (hostnameMatches(ke.patterns, hostname) == false) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
270 continue;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
273 keys.add(ke.key);
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
277 return keys;
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 /**
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
281 * 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
282 * 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
283 * (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
284 * 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
285 * to <code>Connection.setServerHostKeyAlgorithms</code>.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
286 *
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
287 * @param hostname
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
288 * @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
289 * 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
290 * 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
291 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
292 public String[] getPreferredServerHostkeyAlgorithmOrder(String hostname) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
293 String[] algos = recommendHostkeyAlgorithms(hostname);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
294
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
295 if (algos != null) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
296 return algos;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
299 InetAddress[] ipAdresses;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
300
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
301 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
302 ipAdresses = InetAddress.getAllByName(hostname);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
303 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
304 catch (UnknownHostException e) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
305 return null;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
306 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
307
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
308 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
309 algos = recommendHostkeyAlgorithms(ipAdresses[i].getHostAddress());
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
310
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
311 if (algos != null) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
312 return algos;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
316 return null;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
319 private boolean hostnameMatches(String[] hostpatterns, String hostname) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
320 boolean isMatch = false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
321 boolean negate;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
322 hostname = hostname.toLowerCase();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
323
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
324 for (int k = 0; k < hostpatterns.length; k++) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
325 if (hostpatterns[k] == null) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
326 continue;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
329 String pattern;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
330
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
331 /* 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
332 * entries in lines with multiple entries).
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
333 */
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
334
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
335 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
336 pattern = hostpatterns[k].substring(1);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
337 negate = true;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
338 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
339 else {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
340 pattern = hostpatterns[k];
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
341 negate = false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
342 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
343
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
344 /* 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
345
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
346 if ((isMatch) && (negate == false)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
347 continue;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
348 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
349
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
350 /* Now compare */
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
351
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
352 if (pattern.charAt(0) == '|') {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
353 if (checkHashed(pattern, hostname)) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
354 if (negate) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
355 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
356 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
357
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
358 isMatch = true;
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 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
361 else {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
362 pattern = pattern.toLowerCase();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
363
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
364 if ((pattern.indexOf('?') != -1) || (pattern.indexOf('*') != -1)) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
365 if (pseudoRegex(pattern.toCharArray(), 0, hostname.toCharArray(), 0)) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
366 if (negate) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
367 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
368 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
369
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
370 isMatch = true;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
371 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
372 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
373 else if (pattern.compareTo(hostname) == 0) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
374 if (negate) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
375 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
376 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
377
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
378 isMatch = true;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
383 return isMatch;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
386 private void initialize(char[] knownHostsData) throws IOException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
387 BufferedReader br = new BufferedReader(new CharArrayReader(knownHostsData));
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
388
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
389 while (true) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
390 String line = br.readLine();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
391
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
392 if (line == null) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
393 break;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
396 line = line.trim();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
397
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
398 if (line.startsWith("#")) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
399 continue;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
402 String[] arr = line.split(" ");
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
403
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
404 if (arr.length >= 3) {
299
4c3a4e88c027 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 298
diff changeset
405 if ((arr[1].compareTo("ssh-rsa") == 0) ||
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
406 (arr[1].compareTo("ssh-dss") == 0) ||
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
407 (arr[1].startsWith("ecdsa-sha2-"))) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
408 String[] hostnames = arr[0].split(",");
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
409 byte[] msg = Base64.decode(arr[2].toCharArray());
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
410
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
411 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
412 addHostkey(hostnames, arr[1], msg);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
413 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
414 catch (IOException e) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
415 continue;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
422 private void initialize(File knownHosts) throws IOException {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
423 char[] buff = new char[512];
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
424 CharArrayWriter cw = new CharArrayWriter();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
425 knownHosts.createNewFile();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
426 FileReader fr = new FileReader(knownHosts);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
427
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
428 while (true) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
429 int len = fr.read(buff);
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
430
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
431 if (len < 0) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
432 break;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
433 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
434
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
435 cw.write(buff, 0, len);
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
438 fr.close();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
439 initialize(cw.toCharArray());
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
440 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
441
284
4ec87de11e71 start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 278
diff changeset
442 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
443 return key1.equals(key2);
273
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
446 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
447 /* 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
448 while (true) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
449 /* Are we at the end of the pattern? */
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
450 if (pattern.length == i) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
451 return (match.length == j);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
452 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
453
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
454 if (pattern[i] == '*') {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
455 i++;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
456
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
457 if (pattern.length == i) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
458 return true;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
459 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
460
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
461 if ((pattern[i] != '*') && (pattern[i] != '?')) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
462 while (true) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
463 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
464 return true;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
465 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
466
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
467 j++;
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
468
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
469 if (match.length == j) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
470 return false;
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 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
474
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
475 while (true) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
476 if (pseudoRegex(pattern, i, match, j)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
477 return true;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
478 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
479
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
480 j++;
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
481
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
482 if (match.length == j) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
483 return false;
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 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
487
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
488 if (match.length == j) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
489 return false;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
490 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
491
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
492 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
493 return false;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
496 i++;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
497 j++;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
501 private String[] recommendHostkeyAlgorithms(String hostname) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
502 String preferredAlgo = null;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
503 List<Object> keys = getAllKeys(hostname);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
504
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
505 for (Object key : keys) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
506 String thisAlgo;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
507
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
508 if (key instanceof RSAPublicKey) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
509 thisAlgo = "ssh-rsa";
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
510 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
511 else if (key instanceof DSAPublicKey) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
512 thisAlgo = "ssh-dss";
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
513 }
298
ab3a99f11a36 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 287
diff changeset
514 else if (key instanceof ECPublicKey) {
302
beaccc9df37b add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 299
diff changeset
515 ECPublicKey ecPub = (ECPublicKey) key;
298
ab3a99f11a36 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 287
diff changeset
516 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
517 thisAlgo = ECDSASHA2Verify.ECDSA_SHA2_PREFIX + keyType;
ab3a99f11a36 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 287
diff changeset
518 }
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
519 else {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
520 continue;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
521 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
522
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
523 if (preferredAlgo != null) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
524 /* If we find different key types, then return null */
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
525 if (preferredAlgo.compareTo(thisAlgo) != 0) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
526 return null;
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 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
529 else {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
530 preferredAlgo = thisAlgo;
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 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
533
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
534 /* 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
535
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
536 if (preferredAlgo == null) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
537 return null;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
538 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
539
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
540 /* 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
541 * 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
542 * 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
543 * 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
544 * 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
545 * 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
546 * 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
547 * 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
548 * 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
549 * if he/she wants to accept the new key.
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
550 */
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
551
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
552 if (preferredAlgo.equals("ssh-rsa")) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
553 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
554 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
555
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
556 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
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 /**
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
560 * 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
561 * 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
562 * 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
563 *
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
564 * @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
565 * @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
566 * @param serverHostKey the key blob
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
567 * @return <ul>
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
568 * <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
569 * <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
570 * <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
571 * (man-in-the-middle attack?)</li>
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
572 * </ul>
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
573 * @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
574 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
575 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
576 PublicKey remoteKey;
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
577
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
578 if ("ssh-rsa".equals(serverHostKeyAlgorithm)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
579 remoteKey = RSASHA1Verify.decodeSSHRSAPublicKey(serverHostKey);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
580 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
581 else if ("ssh-dss".equals(serverHostKeyAlgorithm)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
582 remoteKey = DSASHA1Verify.decodeSSHDSAPublicKey(serverHostKey);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
583 }
287
db9b028016de start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 286
diff changeset
584 else if (serverHostKeyAlgorithm.startsWith("ecdsa-sha2-")) {
db9b028016de start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 286
diff changeset
585 remoteKey = ECDSASHA2Verify.decodeSSHECDSAPublicKey(serverHostKey);
db9b028016de start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents: 286
diff changeset
586 }
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
587 else {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
588 throw new IllegalArgumentException("Unknown hostkey type " + serverHostKeyAlgorithm);
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
591 int result = checkKey(hostname, remoteKey);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
592
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
593 if (result == HOSTKEY_IS_OK) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
594 return result;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
597 InetAddress[] ipAdresses;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
598
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
599 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
600 ipAdresses = InetAddress.getAllByName(hostname);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
601 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
602 catch (UnknownHostException e) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
603 return result;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
604 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
605
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
606 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
607 int newresult = checkKey(ipAdresses[i].getHostAddress(), remoteKey);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
608
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
609 if (newresult == HOSTKEY_IS_OK) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
610 return newresult;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
611 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
612
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
613 if (newresult == HOSTKEY_HAS_CHANGED) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
614 result = HOSTKEY_HAS_CHANGED;
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
618 return result;
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 /**
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
622 * 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
623 * 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
624 *
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
625 * @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
626 * @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
627 * 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
628 * @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
629 * @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
630 * @throws IOException
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
631 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
632 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
633 byte[] serverHostKey) throws IOException {
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
634 if ((hostnames == null) || (hostnames.length == 0)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
635 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
636 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
637
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
638 if ((serverHostKeyAlgorithm == null) || (serverHostKey == null)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
639 throw new IllegalArgumentException();
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
642 CharArrayWriter writer = new CharArrayWriter();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
643
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
644 for (int i = 0; i < hostnames.length; i++) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
645 if (i != 0) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
646 writer.write(',');
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
647 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
648
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
649 writer.write(hostnames[i]);
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
652 writer.write(' ');
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
653 writer.write(serverHostKeyAlgorithm);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
654 writer.write(' ');
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
655 writer.write(Base64.encode(serverHostKey));
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
656 writer.write("\n");
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
657 char[] entry = writer.toCharArray();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
658 RandomAccessFile raf = new RandomAccessFile(knownHosts, "rw");
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
659 long len = raf.length();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
660
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
661 if (len > 0) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
662 raf.seek(len - 1);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
663 int last = raf.read();
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
664
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
665 if (last != '\n') {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
666 raf.write('\n');
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
670 raf.write(StringEncoder.GetBytes(new String(entry)));
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
671 raf.close();
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 /**
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
675 * Generates a "raw" fingerprint of a hostkey.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
676 *
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
677 * @param type either "md5" or "sha1"
298
ab3a99f11a36 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 287
diff changeset
678 * @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
679 * @param hostkey the hostkey
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
680 * @return the raw fingerprint
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
681 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
682 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
683 Digest dig;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
684
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
685 if ("md5".equals(type)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
686 dig = new MD5();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
687 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
688 else if ("sha1".equals(type)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
689 dig = new SHA1();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
690 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
691 else {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
692 throw new IllegalArgumentException("Unknown hash type " + type);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
693 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
694
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
695 if ("ssh-rsa".equals(keyType)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
696 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
697 else if ("ssh-dss".equals(keyType)) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
698 }
299
4c3a4e88c027 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 298
diff changeset
699 else if (keyType.startsWith("ecdsa-sha2-")) {
298
ab3a99f11a36 add ecdsa key support everywhere
Carl Byington <carl@five-ten-sg.com>
parents: 287
diff changeset
700 }
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
701 else {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
702 throw new IllegalArgumentException("Unknown key type " + keyType);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
703 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
704
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
705 if (hostkey == null) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
706 throw new IllegalArgumentException("hostkey is null");
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
709 dig.update(hostkey);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
710 byte[] res = new byte[dig.getDigestLength()];
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
711
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
712 try {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
713 dig.digest(res);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
714 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
715 catch (DigestException e) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
716 throw new IOException(e);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
717 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
718
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
719 return res;
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 /**
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
723 * 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
724 *
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
725 * @param fingerprint raw fingerprint
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
726 * @return the hex representation
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
727 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
728 static private String rawToHexFingerprint(byte[] fingerprint) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
729 final char[] alpha = "0123456789abcdef".toCharArray();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
730 StringBuilder sb = new StringBuilder();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
731
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
732 for (int i = 0; i < fingerprint.length; i++) {
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
733 if (i != 0) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
734 sb.append(':');
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
735 }
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
736
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
737 int b = fingerprint[i] & 0xff;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
738 sb.append(alpha[b >> 4]);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
739 sb.append(alpha[b & 15]);
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
742 return sb.toString();
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 /**
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
746 * Convert a raw fingerprint to bubblebabble representation.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
747 *
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
748 * @param raw raw fingerprint
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
749 * @return the bubblebabble representation
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
750 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
751 static private String rawToBubblebabbleFingerprint(byte[] raw) {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
752 final char[] v = "aeiouy".toCharArray();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
753 final char[] c = "bcdfghklmnprstvzx".toCharArray();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
754 StringBuilder sb = new StringBuilder();
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
755 int seed = 1;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
756 int rounds = (raw.length / 2) + 1;
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
757 sb.append('x');
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
758
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
759 for (int i = 0; i < rounds; i++) {
071eccdff8ea fix java formatting
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parents: 302
diff changeset
760 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
761 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
762 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
763 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
764
307
071eccdff8ea fix java formatting
Carl Byington <carl@five-ten-sg.com>
parents: 302
diff changeset
765 if ((i + 1) < rounds) {
273
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
766 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
767 sb.append('-');
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
768 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
769 // 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
770 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
771 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
772 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
773 else {
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
774 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
775 sb.append('x');
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
776 sb.append(v[seed / 6]);
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
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
780 sb.append('x');
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
781 return sb.toString();
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 /**
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
785 * 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
786 * 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
787 * <p/>
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
788 * 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
789 *
298
ab3a99f11a36 add ecdsa key support everywhere
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parents: 287
diff changeset
790 * @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
791 * @param publickey key blob
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
792 * @return Hex fingerprint
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
793 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
794 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
795 byte[] raw = rawFingerPrint("md5", keytype, publickey);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
796 return rawToHexFingerprint(raw);
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 /**
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
800 * 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
801 * 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
802 * that are easier to remember for humans.
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
803 * <p/>
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
804 * 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
805 *
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
806 * @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
807 * @param publickey key data
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
808 * @return Bubblebabble fingerprint
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
809 */
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
810 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
811 byte[] raw = rawFingerPrint("sha1", keytype, publickey);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
812 return rawToBubblebabbleFingerprint(raw);
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
813 }
91a31873c42a start conversion from trilead to ganymed
Carl Byington <carl@five-ten-sg.com>
parents:
diff changeset
814 }