--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/ch/ethz/ssh2/SFTPException.java	Fri Jul 18 11:21:46 2014 -0700
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2006-2011 Christian Plattner. All rights reserved.
+ * Please see the LICENSE.txt for licensing details.
+ */
+package ch.ethz.ssh2;
+
+import java.io.IOException;
+
+import ch.ethz.ssh2.sftp.ErrorCodes;
+
+/**
+ * Used in combination with the SFTPv3Client. This exception wraps
+ * error messages sent by the SFTP server.
+ * 
+ * @author Christian Plattner
+ * @version 2.50, 03/15/10
+ */
+
+public class SFTPException extends IOException
+{
+	private static final long serialVersionUID = 578654644222421811L;
+
+	private final String sftpErrorMessage;
+	private final int sftpErrorCode;
+
+	private static String constructMessage(String s, int errorCode)
+	{
+		String[] detail = ErrorCodes.getDescription(errorCode);
+
+		if (detail == null)
+			return s + " (UNKNOWN SFTP ERROR CODE)";
+
+		return s + " (" + detail[0] + ": " + detail[1] + ")";
+	}
+
+	SFTPException(String msg, int errorCode)
+	{
+		super(constructMessage(msg, errorCode));
+		sftpErrorMessage = msg;
+		sftpErrorCode = errorCode;
+	}
+
+	/**
+	 * Get the error message sent by the server. Often, this
+	 * message does not help a lot (e.g., "failure").
+	 * 
+	 * @return the plain string as sent by the server.
+	 */
+	public String getServerErrorMessage()
+	{
+		return sftpErrorMessage;
+	}
+
+	/**
+	 * Get the error code sent by the server.
+	 * 
+	 * @return an error code as defined in the SFTP specs.
+	 */
+	public int getServerErrorCode()
+	{
+		return sftpErrorCode;
+	}
+
+	/**
+	 * Get the symbolic name of the error code as given in the SFTP specs.
+	 * 
+	 * @return e.g., "SSH_FX_INVALID_FILENAME".
+	 */
+	public String getServerErrorCodeSymbol()
+	{
+		String[] detail = ErrorCodes.getDescription(sftpErrorCode);
+
+		if (detail == null)
+			return "UNKNOWN SFTP ERROR CODE " + sftpErrorCode;
+
+		return detail[0];
+	}
+
+	/**
+	 * Get the description of the error code as given in the SFTP specs.
+	 * 
+	 * @return e.g., "The filename is not valid."
+	 */
+	public String getServerErrorCodeVerbose()
+	{
+		String[] detail = ErrorCodes.getDescription(sftpErrorCode);
+
+		if (detail == null)
+			return "The error code " + sftpErrorCode + " is unknown.";
+
+		return detail[1];
+	}
+}