diff options
Diffstat (limited to 'bundles/org.eclipse.team.cvs.ssh/src/org/eclipse/team/internal/ccvs/ssh/KnownHosts.java')
| -rw-r--r-- | bundles/org.eclipse.team.cvs.ssh/src/org/eclipse/team/internal/ccvs/ssh/KnownHosts.java | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/bundles/org.eclipse.team.cvs.ssh/src/org/eclipse/team/internal/ccvs/ssh/KnownHosts.java b/bundles/org.eclipse.team.cvs.ssh/src/org/eclipse/team/internal/ccvs/ssh/KnownHosts.java deleted file mode 100644 index fb98ee34b..000000000 --- a/bundles/org.eclipse.team.cvs.ssh/src/org/eclipse/team/internal/ccvs/ssh/KnownHosts.java +++ /dev/null @@ -1,151 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2000, 2003 IBM Corporation and others. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Common Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/cpl-v10.html - * - * Contributors: - * IBM Corporation - initial API and implementation - *******************************************************************************/ -package org.eclipse.team.internal.ccvs.ssh; - -import java.io.BufferedReader; -import java.io.File; -import java.io.FileNotFoundException; -import java.io.FileReader; -import java.io.FileWriter; -import java.io.IOException; -import java.math.BigInteger; -import java.util.Vector; - -import org.eclipse.core.boot.BootLoader; -import org.eclipse.core.runtime.IStatus; - -/** - * I represent a database of known hosts usually placed in ~/.ssh/known_hosts - * on Unix/Linux systems. - * Currently, only RSA keys are supported, as these are the only keys we - * have to deal with during SSH1 key exchange. - */ -public class KnownHosts { - - private String filename; - - public KnownHosts(String filename) { - this.filename = filename; - } - - public KnownHosts() { - this.filename = KnownHosts.defaultFilename(); - } - - static String defaultFilename() { - if (!BootLoader.getOS().equals(BootLoader.OS_LINUX)) return internalFilename(); - String HOME = System.getProperty("user.home"); //$NON-NLS-1$ - if (HOME==null) return internalFilename(); - return HOME+"/.ssh/known_hosts"; //$NON-NLS-1$ - } - - private static String internalFilename() { - return SSHPlugin.getPlugin().getStateLocation().append("known_hosts").toOSString(); //$NON-NLS-1$ - } - - /** - * Verify if the public key for the specified host is known. - * If the public key matches, return true. - * If the key does not match, return false. - * If the key is not listed in <code>known_hosts</code>, or - * <code>known_hosts</code> does not exist, assume we are connecting - * to the authentic server, add the key, and return true. - * @param e key exponent - * @param n key modulus
* @return boolean whether the key is correct
*/ - public boolean verifyKey(String hostname, byte[] host_key_bits, BigInteger e, BigInteger n) { - FileReader f; - BigInteger nbits = new BigInteger(1, host_key_bits); - try { - f= new FileReader(filename); - } catch (FileNotFoundException ex) { - createHostFile(); - addHost(hostname, nbits, e, n); - return true; - } - BufferedReader r = new BufferedReader(f); - try { - boolean found = false; - String line; - while ((line = r.readLine()) != null) { - if (line.length()==0) continue; - if (line.startsWith("#")) continue; //$NON-NLS-1$ - String[] tokens=subStrings(line); - if (tokens.length==4 && Character.isDigit(tokens[1].charAt(0)) && tokens[0].equalsIgnoreCase(hostname)) { - if (nbits.equals(new BigInteger(tokens[1])) && e.equals(new BigInteger(tokens[2])) && n.equals(new BigInteger(tokens[3]))) { - f.close(); - return true; - } else { - f.close(); - return false; - } - } - } - f.close(); - addHost(hostname, nbits, e, n); - return true; - } catch (IOException ex) { - SSHPlugin.log(IStatus.ERROR, "Error reading host key file", ex); - return false; - } - } - - /* - * Append the host key information to known_hosts. - * Always assume the file exists.
*/ - void addHost(String hostname, BigInteger key_bits, BigInteger e, BigInteger n) { - try { - FileWriter w = new FileWriter(defaultFilename(), true); - w.write(Character.LINE_SEPARATOR); - w.write(hostname + " " + key_bits.toString(10) + " " + e.toString(10) + " " + n.toString(10)); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ - w.close(); - String message = Policy.bind("Client.addedHostKey", new String[] {hostname, defaultFilename()}); //$NON-NLS-1$ - SSHPlugin.log(IStatus.INFO, message, null); - } catch (IOException ex) { - SSHPlugin.log(IStatus.ERROR, "Error writing host key file", ex); - } - } - - /* - * Create the known_hosts file in the default location. - * Fail if the file can not be created (issue a warning in the log).
*/ - void createHostFile() { - try { - new File(defaultFilename()).createNewFile(); - } catch (IOException ee) { - SSHPlugin.log(IStatus.ERROR, "Error creating host key file", ee); - } - - } - private static String[] subStrings(String s) { - Vector v = subStringsVector(s); - String[] substrings = new String[v.size()]; - v.copyInto(substrings); - return substrings; - } - private static Vector subStringsVector(String s) { - Vector v = new Vector(); - s = s.trim(); - if (s.length()==0) return v; - int first1 = s.indexOf(' '); - int first2 = s.indexOf('\t'); - int first; - if ((first1==-1)&&(first2==-1)) first=-1; - else if ((first1!=-1)&&(first2!=-1)) first = Math.min(first1, first2); - else if (first1!=-1) first=first1; else first=first2; - if (first==-1) { - v.add(s); - return v; - } - v.add(s.substring(0,first)); - v.addAll(subStringsVector(s.substring(first+1))); - return v; - } -} |