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| package snec.models.audit.auditModel.client.connectionClient;
import...
/**
* Class which allow the software to connect to a telnet server and execute instructions on it.
*/
public class AuditSSHClient implements AuditClient {
/*----------------------------------------------------------------
* Attributes
------------------------------------------------------------------*/
/**
* The Hop list associated with the equipment.
*/
private ArrayList<ConnectInfo> hop;
/**
* Indicate if the client is connected to the remote server.
*/
private boolean isConnected;
/**
* Indicate if the client is logged to the remote server.
*/
private boolean isLogged;
/**
* The current hop used by the ConnecInfo.
*/
private int currentHop = 0;
/**
* SSH Session.
*/
private Session sess;
/**
* String indicating if the connection failed or not.
*/
private String failed = "";
/**
* The SSH connection.
*/
private Connection conn;
/**
* The input stream of the ssh ConnecInfo.
*/
private InputStream sshIn;
/**
* The output stream of the ssh ConnecInfo.
*/
private OutputStream sshOut;
/**
* The equipment log file where are written some information.
*/
private SnecFile loadingLog;
/**
* The operation log file where are written some information.
*/
private SnecFile operationLogFile;
/**
* Boolean managing the end of the current command.
*/
private boolean nextCommand;
/**
* The skeleton containing all the class functions that this audit client needs.
*/
private AuditSkeleton skeleton;
/**
* The flow that we display in the progress panel flow text since the previous "change" calling.
*/
private String buffer;
/**
* The remaining time to display in the progress panel (for the current command).
*/
private String timeToDisplay = "";
/**
* The connection type ( = SSH).
*/
private String type;
/**
* The object allowing graphical updates by calling the "change" method.
*/
private AuditModel auditModel;
/**
* The boolean attribut refers to the good execution of a command.
*/
private boolean commandStatus;
/*-----------------------------------------------------------------
* Constructors
-------------------------------------------------------------------*/
/**
* Construct a new AuditSSHClient using a list of hops.
* @param listHop The list of the hopes which will be used to connect to the final remote server.
*/
public AuditSSHClient(Equipment equipment) {
this.type = "SSH";
this.hop = equipment.getHopListInfo();
this.nextCommand = false;
this.skeleton = new AuditSkeleton(this);
this.auditModel = equipment.getAuditModel();
}
/**
* Connect the software to a remote server.
* @return Indicate if the ConnecInfo attempt is a success.
*/
public boolean connect() {
//get the log files associated to the current equipment.
this.loadingLog = AuditModel.getCurrentEquipment().getLoadingLogfile();
this.operationLogFile = AuditModel.getCurrentEquipment().getOperationLogfile();
this.timeToDisplay = "Try to connect on " + this.hop.get(0).getHostname();
this.change();
this.conn = new Connection(this.hop.get(0).getHostname(), this.hop.get(0).getPort());
try {
ConnectionInfo connectInfoTemp = this.conn.connect();
// If connection is available
if (connectInfoTemp != null) {
this.loadingLog.writeFile("[Date] : SNEC is connected to the remote server (" + this.hop.get(0).getHostname() + ") by SSH");
this.isConnected = true;
}
} catch (IOException E02) {
this.loadingLog.writeFile("[Date] : SNEC can't connect the remote server (" + this.hop.get(0).getHostname() + ") by SSH ! ( " + E02.getMessage() + " )");
this.isConnected = false;
return false;
}
this.currentHop = 0;
while (this.currentHop < this.hop.size() && this.isConnected) {
this.isConnected = this.logon();
this.currentHop++;
}
this.currentHop--;
return this.isConnected;
}
/**
* Disconnect from the remote server.
**/
public void disconnect() {
if (this.isConnected) {
try {
this.sess.close();
this.conn.close();
this.loadingLog.writeFile("[Date] : SNEC is disconnected from the remote server");
} catch (Exception ECT03) {
this.loadingLog.writeFile("[Date] : [ECT03] Can't close the " + this.type + " connection ! ( " + ECT03.getMessage() + " )");
}
}
}
/**
* Connect the the software to a ssh hop
* @param hop The ConnecInfo hop
* @param number The number of the hop
* @return the result of the ConnecInfo
*/
public boolean ConnectHop(ConnectInfo hop, int number) {
return this.skeleton.ConnectHop(hop, number);
}
/**
* Log the software on the remote server.
* @return Indicate if the login attempt was a success.
*/
private boolean logon() {
if (this.currentHop == 0 && this.conn.isAuthenticationComplete() == false) {
try {
this.isLogged = this.conn.authenticateWithPassword(this.hop.get(this.currentHop).getLogin(), this.hop.get(this.currentHop).getPassword());
if (this.isLogged) {
this.sess = this.conn.openSession();
this.sess.requestDumbPTY();
this.sess.startShell();
this.sshOut = this.sess.getStdin();
this.sshIn = this.sess.getStdout();
this.loadingLog.writeFile("[Date] : The LoginPrompt <" + this.hop.get(0).getLoginPrompt() + "> was found");
this.loadingLog.writeFile("[Date] : The PasswordPrompt <" + this.hop.get(0).getPasswordPrompt() + "> was found");
this.waitFor(this.hop.get(0).getPrompt(), 10);
if (this.commandStatus == false) {
this.loadingLog.writeFile("[Date] : The Prompt is wrong ! <" + this.hop.get(0).getPrompt() + "> expected, <" + this.failed + "> found");
this.loadingLog.writeFile("[Date] : SNEC can't log to the remote server !");
return false;
} else {
this.loadingLog.writeFile("[Date] : SNEC is logged to the remote server with the " + this.hop.get(0).getLogin() + " account");
return true;
}
} else {
this.loadingLog.writeFile("[Date] : Wrong parameter(s) ! ");
this.loadingLog.writeFile("[Date] : - Prompt : <" + this.hop.get(0).getPrompt() + "> expected");
this.loadingLog.writeFile("[Date] : - Login prompt : " + this.hop.get(0).getLoginPrompt() + " found");
this.loadingLog.writeFile("[Date] : - Password prompt : " + this.hop.get(0).getPasswordPrompt() + " found");
this.loadingLog.writeFile("[Date] : SNEC can't log on the remote server with the " + this.hop.get(0).getLogin() + " account !");
return false;
}
} catch (IOException E) {
this.loadingLog.writeFile("[Date] : SNEC can't log on the remote server with the " + this.hop.get(0).getLogin() + " account ! ( " + E.getMessage() + " )");
E.printStackTrace();
return false;
}
} else {
int hopNumberToDisplay = this.currentHop + 1;
this.loadingLog.writeFile("[Date] : SNEC try to connect to the hop number " + hopNumberToDisplay + " (" + this.hop.get(this.currentHop).getHostname() + ") by " + this.hop.get(this.currentHop).getProtocol());
return this.ConnectHop(this.hop.get(this.currentHop), this.currentHop);
}
}
/**
* Send a new integer on the remote server, to skip the executing command
* @param value The integer which will be send to the remote server.
*/
public void write(int value) {
try {
this.sshOut.write(value);
} catch (Exception ECT04) {
this.operationLogFile.writeFile("[Date] : [ECT04] Can't write on the remote server ! " + ECT04.getMessage());
}
}
/**
* Wait for the delay 'duree' and read all InputStream data during this period.
* @param duree The time limit of the operation.
* @return All the data which were read until the time limit.
*/
public String wait(int duree) {
//The String Buffer which will contains the response of the server
StringBuffer in = new StringBuffer();
//The string containing the remote response of this command
String response = "";
//Get the input stream of the telnet connection
InputStream sshInput = this.sess.getStdout();
// Gets the present time
Calendar endTime = Calendar.getInstance();
endTime.add(Calendar.SECOND, duree);
while (Calendar.getInstance().before(endTime)) {
try {
while (sshInput.available() != 0 && Calendar.getInstance().before(endTime)) {
//if there are bytes that can be read
in.append((char) sshInput.read());
}
//Get the present response
this.buffer = in.toString();
//Delete the previous response stocks in the string buffer "in"
in.delete(0, in.length());
//Store up the previous remote responses
response += this.buffer;
Calendar currentTime = Calendar.getInstance();
this.timeToDisplay = String.valueOf((endTime.getTimeInMillis() - currentTime.getTimeInMillis()) / 1000);
if (this.buffer.contains("\n")) {
this.change();
}
//check if user wants to stop this command.
if (this.nextCommand) {
this.nextCommand = false;
this.commandStatus = false;
return response;
}
} catch (IOException E) {
//if istream.available() create an error
this.operationLogFile.writeFile("[Date] : [ERROR] The SSH flow was interrupted by the system ( " + E.getMessage() + " )");
}
}
this.commandStatus = true;
return response;
}
/**
* Receive the data coming from the remote server in a passive mode until a specific pattern is recognized.
* @param Pattern The pattern which need to be recognized.
* @param timeout The time limit of the operation
* @return All the data which were read until the recognition of the pattern.
*/
public String waitFor(String Pattern, int timeout) {
//The String Buffer which will contains the response of the server
StringBuffer in = new StringBuffer();
//The string containing the remote response of this command
String response = "";
//Get the input stream of the SSH connection
InputStream sshInput = this.sess.getStdout();
//The objects that will identify the pattern
Pattern Identifier2;
Matcher Match2;
Pattern = Pattern.replace("\\", "\\\\");
Pattern = Pattern.replace("[", "\\[");
Pattern = Pattern.replace("]", "\\]");
Pattern = Pattern.replace("^", "\\^");
Pattern = Pattern.replace("(", "\\(");
Pattern = Pattern.replace(")", "\\)");
Pattern = Pattern.replace("&", "\\&)");
Pattern = Pattern.replace(".", "\\.");
Pattern = Pattern.replace("*", "(.)*");
Pattern = Pattern.replace("{", "\\{");
Pattern = Pattern.replace("}", "\\}");
Pattern = Pattern.replace("?", ".");
int i = 0;
int j = 0;
for (i = 0; i < Pattern.length(); i++) {
if (Pattern.charAt(i) != '.') {
break;
}
j++;
}
if (i != 0) {
Pattern = Pattern.substring(i);
}
//Creation of the regex compiler
Identifier2 = java.util.regex.Pattern.compile(Pattern.toLowerCase());
//Indicate if the pattern was found
boolean pattFound = false;
// Timeout is set
// Gets the present time
Calendar endTime = Calendar.getInstance();
Calendar currentTime = Calendar.getInstance();
// Variables used to display correctly the timeout remaining
long timeoutRemaining;
// Adds the timeout at the present time
endTime.add(Calendar.SECOND, timeout);
//launch a unending loop
while (true) {
try {
while (Calendar.getInstance().before(endTime) && sshInput.available() == 0) {
try {
if (this.nextCommand) {
this.setNextCommand(false);
this.commandStatus = false;
return response;
}
Thread.sleep(250);
currentTime = Calendar.getInstance();
timeoutRemaining = (endTime.getTimeInMillis() - currentTime.getTimeInMillis()) / 1000;
String time = this.timeToDisplay;
this.timeToDisplay = String.valueOf(timeoutRemaining);
if (!time.equalsIgnoreCase(this.timeToDisplay)) {
//Update the time expiration.
this.change();
}
} catch (InterruptedException E2) {
this.operationLogFile.writeFile("[Date] : [ERROR] The thread was interrupted by the system (" + E2.getMessage() + ")");
E2.printStackTrace();
}
}
} catch (IOException E3) {
this.operationLogFile.writeFile("[Date] : [ERROR] The SSH flow was interrupted by the system ( " + E3.getMessage() + " )");
E3.printStackTrace();
}
if (!Calendar.getInstance().before(endTime)) {
this.operationLogFile.writeFile("[Date] : Timeout expired !");
Pattern spl = java.util.regex.Pattern.compile("\r\n|\n|\r|\u0085|\u2028|\u2029");
String[] lines = spl.split(response);
Matcher m = Identifier2.matcher(lines[lines.length - 1].toLowerCase());
if (!m.find()) {
if (lines[lines.length - 1].toLowerCase().contains("more") || lines[lines.length - 1].toLowerCase().contains("press any")) {
PrintStream out = new PrintStream(this.sshOut);
out.print(" ");
out.flush();
// Gets the present time
endTime = Calendar.getInstance();
// Adds the timeout at the present time
endTime.add(Calendar.SECOND, timeout);
} // Case Omni6800
else if (lines[lines.length - 1].toLowerCase().contains("next line <cr>")) {
PrintStream out = new PrintStream(this.sshOut);
out.print(" ");
out.flush();
endTime = Calendar.getInstance();
// Adds the timeout at the present time
endTime.add(Calendar.SECOND, timeout);
} else {
this.failed = response;
this.operationLogFile.writeFile("[Date] : [ERROR] The prompt \"" + Identifier2.toString() + "\" was not found before timeout expiration. Check your command timeout !");
this.commandStatus = false;
return response;
}
} else {
this.operationLogFile.writeFile("[Date] : [ERROR] The prompt timeout \"" + Identifier2.toString() + "\" is too short !");
this.commandStatus = false;
return response;
}
}
try {
//Checks if any characters are waited over the session
while (sshInput.available() != 0 && in.length() < 10000) {
in.append((char) sshInput.read());
}
//Get the present response
this.buffer = in.toString();
//Delete the previous response stocks in the string buffer "in"
in.delete(0, in.length());
//Store up the previous remote responses
response += this.buffer;
//Update the flow text(s)
if (this.buffer.contains("\n")) {
this.change();
}
//allow user to stop this command.
if (this.nextCommand) {
this.setNextCommand(false);
this.commandStatus = false;
return response;
}
endTime = Calendar.getInstance();
endTime.add(Calendar.SECOND, timeout);
} catch (IOException E) {
this.operationLogFile.writeFile("[Date] : [ERROR] Can't check the flow over the session ! (" + E.getMessage() + ")");
}
Pattern spl = java.util.regex.Pattern.compile("\r\n|\n|\r|\u0085|\u2028|\u2029");
String[] lines = spl.split(response);
if (lines.length >= 1) {
// Checks if a "more" has been find in input stream
if (lines[lines.length - 1].toLowerCase().contains("more") || lines[lines.length - 1].toLowerCase().contains("press any")) {
PrintStream out = new PrintStream(this.sshOut);
out.print(" ");
out.flush();
} // Case Omni6800
else if (lines[lines.length - 1].toLowerCase().contains("next line <cr>")) {
PrintStream out = new PrintStream(this.sshOut);
out.print(" ");
out.flush();
} else {
Match2 = Identifier2.matcher(lines[lines.length - 1].toLowerCase());
pattFound = Match2.find();
if (pattFound) {
String Ret = response.replace(this.hop.get(this.currentHop).getPrompt(), "");
this.commandStatus = true;
return Ret;
}
}
}
}
}
/**
* Send a new instruction to the remote server.
* @param cmd The instruction to send to the remote server.
* @param timeout The time limit for the operation.
* @return The result of the operation.
*/
public String send(String cmd, int timeout) {
if (this.checkAccess()) {
PrintStream out = new PrintStream(this.sshOut);
out.println(cmd);
// Case of long command, Method Sleep to avoid Watifor Error
int milliSec = 100;
if (cmd.length() > 7) {
if (cmd.length() > 100) {
milliSec = 2000;
} else if (cmd.length() > 80) {
milliSec = 500;
} else if (cmd.length() > 30) {
milliSec = 250;
}
try {
Thread.sleep(milliSec);
} catch (InterruptedException ex) {
ex.printStackTrace();
}
}
if (this.hop.get(this.currentHop).getPrompt() != null) {
String Ret = this.waitFor(this.hop.get(this.currentHop).getPrompt(), timeout);
if (this.commandStatus == false) {
//stop the current command which timeout expired or been skipped.
this.stopCommand(this.hop.get(this.currentHop).getPrompt());
}
return Ret;
} else {
return null;
}
} else {
return "";
}
}
/**
* Send a new instruction to the remote server.
* @param cmd The instruction to send to the remote server.
* @param timeout The time limit for the operation.
* @param Prompt The correct prompt
* @return The result of the operation.
*/
public String send(String cmd, int time, String Prompt) {
if (this.checkAccess()) {
PrintStream out = new PrintStream(this.sshOut);
out.println(cmd);
// Case of long command, Method Sleep to avoid Watifor Error
if (cmd.length() > 7) {
int milliSec = 100;
if (cmd.length() > 100) {
milliSec = 2000;
} else if (cmd.length() > 80) {
milliSec = 500;
} else if (cmd.length() > 30) {
milliSec = 250;
}
try {
Thread.sleep(milliSec);
} catch (InterruptedException ex) {
ex.printStackTrace();
}
}
if (Prompt != null) {
String result = this.waitFor(Prompt, time);
if (this.commandStatus == false) {
//stop the current command which timeout expired or been skipped
this.stopCommand(Prompt);
}
return result;
} else {
//if prompt == null, launch the execution of periodic command with runtime attribut.
String result = "";
result = this.wait(time);
//periodic command has to be stopped after the runtime period.
this.stopCommand(this.hop.get(this.currentHop).getPrompt());
return result;
}
} else {
return null;
}
}
/**
* This class function stop the current command by sending a CTRL+C
* and taking off the generated prompt (in order to execute the following command)
*
* @param prompt The expected prompt
* @return The flow text extracted by waitFor()
*/
public void stopCommand(String prompt) {
this.write(0x03); // = send(CTRL+C)
this.write(0x0D); // = send (ENTER)
//Wait 200 milliseconds so that the remote server replies to those actions.
try {
Thread.sleep(200);
} catch (InterruptedException ex) {
Logger.getLogger(AuditTelnetClient.class.getName()).log(Level.SEVERE, null, ex);
}
//read the stream in order to replace the flow timekeeper at the beginning of the next command.
InputStream sshInput = this.sess.getStdout();
StringBuffer in = new StringBuffer();
try {
while (sshInput.available() != 0) {
in.append((char) sshInput.read());
}
} catch (IOException ex) {
System.out.println(ex.getMessage());
}
}
/**
* Check if the ConnecInfo with the remote server works.
* @return The status of the ConnecInfo.
*/
public boolean checkAccess() {
return this.isConnected;
}
/**
* Update all controllers that observe auditModel.
*/
private void change() {
try {
SwingUtilities.invokeAndWait(new Runnable() {
public void run() {
auditModel.change();
}
});
} catch (InterruptedException ex) {
Logger.getLogger(AuditTelnetClient.class.getName()).log(Level.SEVERE, null, ex);
} catch (InvocationTargetException ex) {
Logger.getLogger(AuditTelnetClient.class.getName()).log(Level.SEVERE, null, ex);
}
}
/*----------------------------------------------------------------
* Getter and Setter
------------------------------------------------------------------*/
/**
* Getter of the property <tt>hope</tt>
* @return Returns the hope.
*/
public ArrayList<ConnectInfo> getHop() {
return hop;
}
/**
* Setter of the property <tt>hope</tt>
* @param hop the hope to set.
*/
public void setHop(ArrayList<ConnectInfo> hop) {
this.hop = hop;
}
/**
* Set the attribut nextCommand
* @param b : boolean
*/
public void setNextCommand(boolean b) {
this.nextCommand = b;
}
/**
* Getter of the property <tt>failed</tt>
* @return failed : String indicating if the connection failed or not.
*/
public String getFailed() {
return this.failed;
}
/**
* Getter of the property <tt>operationLogfile</tt>
* @return operationLogfile : the operation log object.
*/
public SnecFile getLoadingLog() {
return this.loadingLog;
}
public String getBuffer() {
return this.buffer;
}
public String getTimeToDisplay() {
return this.timeToDisplay;
}
public String getType() {
return this.type;
}
public boolean getCommandStatus() {
return this.commandStatus;
}
public void setBuffer(String buffer) {
this.buffer = buffer;
}
public void write(String value) {
throw new UnsupportedOperationException("Not supported yet.");
}
} |
SSH connexion, carriage return en trop, caractères parasites dans mes logs..
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