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package org.ietf.jgss;


This exception is thrown whenever a GSS-API error occurs, including
any mechanism specific error.  It may contain both the major and the
minor GSS-API status codes.  Major error codes are those defined at the
GSS-API level in this class. Minor error codes are mechanism specific
error codes that can provide additional information. The underlying
mechanism implementation is responsible for setting appropriate minor
status codes when throwing this exception.  Aside from delivering the
numeric error codes to the caller, this class performs the mapping from
their numeric values to textual representations.

Author:Mayank Upadhyay
Since:1.4
/**
 * This exception is thrown whenever a GSS-API error occurs, including
 * any mechanism specific error.  It may contain both the major and the
 * minor GSS-API status codes.  Major error codes are those defined at the
 * GSS-API level in this class. Minor error codes are mechanism specific
 * error codes that can provide additional information. The underlying
 * mechanism implementation is responsible for setting appropriate minor
 * status codes when throwing this exception.  Aside from delivering the
 * numeric error codes to the caller, this class performs the mapping from
 * their numeric values to textual representations.
 *
 * @author Mayank Upadhyay
 * @since 1.4
 */
public class GSSException extends Exception {

    private static final long serialVersionUID = -2706218945227726672L;

    
Channel bindings mismatch.

/**
     * Channel bindings mismatch.
     */
    public static final int BAD_BINDINGS = 1; //start with 1

    
Unsupported mechanism requested.

/**
     * Unsupported mechanism requested.
     */
    public static final int BAD_MECH = 2;

    
Invalid name provided.

/**
     * Invalid name provided.
     */
    public static final int BAD_NAME = 3;

    
Name of unsupported type provided.

/**
     * Name of unsupported type provided.
     */
    public static final int BAD_NAMETYPE = 4;

    
Invalid status code.

/**
     * Invalid status code.
     */
    /*
     * This is meant to be thrown by display_status which displays
     * major/minor status when an incorrect status type is passed in to it!
     */
    public static final int BAD_STATUS = 5;

    
Token had invalid integrity check.

/**
     * Token had invalid integrity check.
     */
    public static final int BAD_MIC = 6;

    
Security context expired.

/**
     * Security context expired.
     */
    public static final int CONTEXT_EXPIRED = 7;

    
Expired credentials.

/**
     * Expired credentials.
     */
    public static final int CREDENTIALS_EXPIRED  = 8;

    
Defective credentials.

/**
     * Defective credentials.
     *
     */
    public static final int DEFECTIVE_CREDENTIAL = 9;

    
Defective token.

/**
     * Defective token.
     *
     */
    public static final int DEFECTIVE_TOKEN = 10;

    
General failure, unspecified at GSS-API level.

/**
     * General failure, unspecified at GSS-API level.
     */
    public static final int FAILURE = 11;

    
Invalid security context.

/**
     * Invalid security context.
     */
    public static final int NO_CONTEXT = 12;

    
Invalid credentials.

/**
     * Invalid credentials.
     */
    public static final int NO_CRED = 13;

    
Unsupported QOP value.

/**
     * Unsupported QOP value.
     */
    public static final int BAD_QOP = 14;

    
Operation unauthorized.

/**
     * Operation unauthorized.
     */
    public static final int UNAUTHORIZED = 15;

    
Operation unavailable.

/**
     * Operation unavailable.
     */
    public static final int UNAVAILABLE = 16;

    
Duplicate credential element requested.

/**
     * Duplicate credential element requested.
     */
    public static final int DUPLICATE_ELEMENT = 17;

    
Name contains multi-mechanism elements.

/**
     * Name contains multi-mechanism elements.
     */
    public static final int NAME_NOT_MN = 18;

    
The token was a duplicate of an earlier token.
This is a fatal error code that may occur during
context establishment.  It is not used to indicate
supplementary status values. The MessageProp object is
used for that purpose.

/**
     * The token was a duplicate of an earlier token.
     * This is a fatal error code that may occur during
     * context establishment.  It is not used to indicate
     * supplementary status values. The MessageProp object is
     * used for that purpose.
     */
    public static final int DUPLICATE_TOKEN = 19;

    
The token's validity period has expired.  This is a
fatal error code that may occur during context establishment.
It is not used to indicate supplementary status values.
The MessageProp object is used for that purpose.

/**
     * The token's validity period has expired.  This is a
     * fatal error code that may occur during context establishment.
     * It is not used to indicate supplementary status values.
     * The MessageProp object is used for that purpose.
     */
    public static final int OLD_TOKEN = 20;


    
A later token has already been processed.  This is a
fatal error code that may occur during context establishment.
It is not used to indicate supplementary status values.
The MessageProp object is used for that purpose.

/**
     * A later token has already been processed.  This is a
     * fatal error code that may occur during context establishment.
     * It is not used to indicate supplementary status values.
     * The MessageProp object is used for that purpose.
     */
    public static final int UNSEQ_TOKEN = 21;


    
An expected per-message token was not received.  This is a
fatal error code that may occur during context establishment.
It is not used to indicate supplementary status values.
The MessageProp object is used for that purpose.

/**
     * An expected per-message token was not received.  This is a
     * fatal error code that may occur during context establishment.
     * It is not used to indicate supplementary status values.
     * The MessageProp object is used for that purpose.
     */
    public static final int GAP_TOKEN = 22;


    private static String[] messages = {
        "Channel binding mismatch", // BAD_BINDINGS
        "Unsupported mechanism requested", // BAD_MECH
        "Invalid name provided", // BAD_NAME
        "Name of unsupported type provided", //BAD_NAMETYPE
        "Invalid input status selector", // BAD_STATUS
        "Token had invalid integrity check", // BAD_SIG
        "Specified security context expired", // CONTEXT_EXPIRED
        "Expired credentials detected", // CREDENTIALS_EXPIRED
        "Defective credential detected", // DEFECTIVE_CREDENTIAL
        "Defective token detected", // DEFECTIVE_TOKEN
        "Failure unspecified at GSS-API level", // FAILURE
        "Security context init/accept not yet called or context deleted",
                                                // NO_CONTEXT
        "No valid credentials provided", // NO_CRED
        "Unsupported QOP value", // BAD_QOP
        "Operation unauthorized", // UNAUTHORIZED
        "Operation unavailable", // UNAVAILABLE
        "Duplicate credential element requested", //DUPLICATE_ELEMENT
        "Name contains multi-mechanism elements", // NAME_NOT_MN
        "The token was a duplicate of an earlier token", //DUPLICATE_TOKEN
        "The token's validity period has expired", //OLD_TOKEN
        "A later token has already been processed", //UNSEQ_TOKEN
        "An expected per-message token was not received", //GAP_TOKEN
    };

   
The major code for this exception

@serial
/**
    * The major code for this exception
    *
    * @serial
    */
    private int major;

   
The minor code for this exception

@serial
/**
    * The minor code for this exception
    *
    * @serial
    */
    private int minor = 0;

   
The text string for minor code

@serial
/**
    * The text string for minor code
    *
    * @serial
    */
    private String minorMessage = null;

   
Alternate text string for major code

@serial
/**
    * Alternate text string for major code
    *
    * @serial
    */

    private String majorString = null;

    
 Creates a GSSException object with a specified major code.

Params:
  • majorCode – the The GSS error code for the problem causing this
exception to be thrown.
/**
     *  Creates a GSSException object with a specified major code.
     *
     * @param majorCode the The GSS error code for the problem causing this
     * exception to be thrown.
     */
    public GSSException (int majorCode) {

        if (validateMajor(majorCode))
            major = majorCode;
        else
            major = FAILURE;
    }

    
Construct a GSSException object with a specified major code and a
specific major string for it.

Params:
  • majorCode – the fatal error code causing this exception.
  • majorString – an expicit message to be included in this exception
/**
     * Construct a GSSException object with a specified major code and a
     * specific major string for it.
     *
     * @param majorCode the fatal error code causing this exception.
     * @param majorString an expicit message to be included in this exception
     */
    GSSException (int majorCode, String majorString) {

        if (validateMajor(majorCode))
            major = majorCode;
        else
            major = FAILURE;
        this.majorString = majorString;
    }


    
Creates a GSSException object with the specified major code, minor
code, and minor code textual explanation.  This constructor is to be
used when the exception is originating from the underlying mechanism
level. It allows the setting of both the GSS code and the mechanism
code.

Params:
  • majorCode – the GSS error code for the problem causing this
exception to be thrown.
  • minorCode – the mechanism level error code for the problem
causing this exception to be thrown.
  • minorString – the textual explanation of the mechanism error
code.
/**
     * Creates a GSSException object with the specified major code, minor
     * code, and minor code textual explanation.  This constructor is to be
     * used when the exception is originating from the underlying mechanism
     * level. It allows the setting of both the GSS code and the mechanism
     * code.
     *
     * @param majorCode the GSS error code for the problem causing this
     * exception to be thrown.
     * @param minorCode the mechanism level error code for the problem
     * causing this exception to be thrown.
     * @param minorString the textual explanation of the mechanism error
     * code.
     */
    public GSSException (int majorCode, int minorCode, String minorString) {

        if (validateMajor(majorCode))
            major = majorCode;
        else
            major = FAILURE;

        minor = minorCode;
        minorMessage = minorString;
    }

    
Returns the GSS-API level major error code for the problem causing
this exception to be thrown. Major error codes are
defined at the mechanism independent GSS-API level in this
class. Mechanism specific error codes that might provide more
information are set as the minor error code.

See Also:
Returns:int the GSS-API level major error code causing this exception
/**
     * Returns the GSS-API level major error code for the problem causing
     * this exception to be thrown. Major error codes are
     * defined at the mechanism independent GSS-API level in this
     * class. Mechanism specific error codes that might provide more
     * information are set as the minor error code.
     *
     * @return int the GSS-API level major error code causing this exception
     * @see #getMajorString
     * @see #getMinor
     * @see #getMinorString
     */
    public int getMajor() {
        return major;
    }

    
Returns the mechanism level error code for the problem causing this
exception to be thrown. The minor code is set by the underlying
mechanism.

See Also:
Returns:int the mechanism error code; 0 indicates that it has not
been set.
/**
     * Returns the mechanism level error code for the problem causing this
     * exception to be thrown. The minor code is set by the underlying
     * mechanism.
     *
     * @return int the mechanism error code; 0 indicates that it has not
     * been set.
     * @see #getMinorString
     * @see #setMinor
     */
    public int  getMinor(){
        return minor;
    }

    
Returns a string explaining the GSS-API level major error code in
this exception.

See Also:
Returns:String explanation string for the major error code
/**
     * Returns a string explaining the GSS-API level major error code in
     * this exception.
     *
     * @return String explanation string for the major error code
     * @see #getMajor
     * @see #toString
     */
    public String getMajorString() {

        if (majorString != null)
            return majorString;
        else
            return messages[major - 1];
    }


    
Returns a string explaining the mechanism specific error code.
If the minor status code is 0, then no mechanism level error details
will be available.

See Also:
Returns:String a textual explanation of mechanism error code
/**
     * Returns a string explaining the mechanism specific error code.
     * If the minor status code is 0, then no mechanism level error details
     * will be available.
     *
     * @return String a textual explanation of mechanism error code
     * @see #getMinor
     * @see #getMajorString
     * @see #toString
     */
    public String getMinorString() {

        return minorMessage;
    }


    
Used by the exception thrower to set the mechanism
level minor error code and its string explanation.  This is used by
mechanism providers to indicate error details.

Params:
  • minorCode – the mechanism specific error code
  • message – textual explanation of the mechanism error code
See Also:
/**
     * Used by the exception thrower to set the mechanism
     * level minor error code and its string explanation.  This is used by
     * mechanism providers to indicate error details.
     *
     * @param minorCode the mechanism specific error code
     * @param message textual explanation of the mechanism error code
     * @see #getMinor
     */
    public void setMinor(int minorCode, String message) {

        minor = minorCode;
        minorMessage = message;
    }


    
Returns a textual representation of both the major and the minor
status codes.

Returns:a String with the error descriptions
/**
     * Returns a textual representation of both the major and the minor
     * status codes.
     *
     * @return a String with the error descriptions
     */
    public String toString() {
        return ("GSSException: " + getMessage());
    }

    
Returns a textual representation of both the major and the minor
status codes.

Returns:a String with the error descriptions
/**
     * Returns a textual representation of both the major and the minor
     * status codes.
     *
     * @return a String with the error descriptions
     */
    public String getMessage() {
        if (minor == 0)
            return (getMajorString());

        return (getMajorString()
                + " (Mechanism level: " + getMinorString() + ")");
    }


    /*
     * Validates the major code in the proper range.
     */
    private boolean validateMajor(int major) {

        if (major > 0 && major <= messages.length)
            return (true);

        return (false);
    }
}