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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2011 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
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* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
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*/
package org.glassfish.cluster.ssh.util;
import com.trilead.ssh2.Connection;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.io.File;
import java.io.IOException;
import com.sun.enterprise.util.io.FileUtils;
import org.glassfish.api.admin.CommandException;
/**
* @author Rajiv Mordani
*/
public class SSHUtil {
private static final List activeConnections =
new ArrayList();
private static final String NL = System.getProperty("line.separator");
/**
* Registers a connection for cleanup when the plugin is stopped.
*
* @param connection The connection.
*/
public static synchronized void register(Connection connection) {
if (!activeConnections.contains(connection)) {
activeConnections.add(connection);
}
}
/**
* Unregisters a connection for cleanup when the plugin is stopped.
*
* @param connection The connection.
*/
public static synchronized void unregister(Connection connection) {
connection.close();
activeConnections.remove(connection);
}
/**
* Convert empty string to null.
*/
public static String checkString(String s) {
if(s==null || s.length()==0) return null;
return s;
}
public static String getExistingKeyFile() {
String key = null;
for (String keyName : Arrays.asList("id_rsa","id_dsa",
"identity"))
{
String h = System.getProperty("user.home") + File.separator;
File f = new File(h+".ssh"+File.separator+keyName);
if (f.exists()) {
key = h + ".ssh"+File.separator + keyName;
break;
}
}
return key;
}
public static String getDefaultKeyFile() {
String k = System.getProperty("user.home") + File.separator
//String k = System.getenv("HOME") + File.separator
+ ".ssh" + File.separator + "id_rsa";
return k;
}
/**
* Simple method to validate an encrypted key file
* @return true|false
* @throws CommandException
*/
public static boolean isEncryptedKey(String keyFile) throws CommandException {
boolean res = false;
try {
String f = FileUtils.readSmallFile(keyFile);
if (f.startsWith("-----BEGIN ") && f.contains("ENCRYPTED")
&& f.endsWith(" PRIVATE KEY-----" + NL)) {
res=true;
}
}
catch (IOException ioe) {
throw new CommandException(Strings.get("error.parsing.key", keyFile, ioe.getMessage()));
}
return res;
}
/**
* This method validates either private or public key file. In case of private
* key, it parses the key file contents to verify if it indeed contains a key
* @param file the key file
* @return success if file exists, false otherwise
*/
public static boolean validateKeyFile(String file) throws CommandException {
boolean ret = false;
//if key exists, set prompt flag
File f = new File(file);
if (f.exists()) {
if (!f.getName().endsWith(".pub")) {
String key = null;
try {
key = FileUtils.readSmallFile(file);
}
catch (IOException ioe) {
throw new CommandException(Strings.get("unable.to.read.key", file, ioe.getMessage()));
}
if (!key.startsWith("-----BEGIN ") && !key.endsWith(" PRIVATE KEY-----" + NL)) {
throw new CommandException(Strings.get("invalid.key.file", file));
}
}
ret = true;
}
else {
throw new CommandException(Strings.get("key.does.not.exist", file));
}
return ret;
}
}