com.cosmian.jna.covercrypt.structs

Class Ffi

java.lang.Object

com.cosmian.jna.covercrypt.structs.Ffi

Direct Known Subclasses:

AccessPolicy, Attribute, CoverCrypt, Policy

public class Ffi
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
protected static CoverCryptWrapper	INSTANCE

Constructor Summary

Constructors

Constructor and Description
Ffi()

Method Summary

Modifier and Type	Method and Description
static String	get_last_error() Return the last error in a String that does not exceed 1023 bytes
static String	get_last_error(int max_len) Return the last error in a String that does not exceed `max_len` bytes
void	set_error(String error_msg) Set the last error on the native lib
static int	unwrap(int result) If the result of the last FFI call is in Error, recover the last error from the native code and throw an exception wrapping it.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

INSTANCE

protected static final CoverCryptWrapper INSTANCE

Constructor Detail

Ffi

public Ffi()

Method Detail

unwrap

public static int unwrap(int result)
                  throws CloudproofException

If the result of the last FFI call is in Error, recover the last error from the native code and throw an exception wrapping it.

Parameters:

result - the result of the FFI call

Returns:

the result if it is different from 1

Throws:

CloudproofException - in case of native library error (result is 1)

get_last_error

public static String get_last_error()
                             throws CloudproofException

Return the last error in a String that does not exceed 1023 bytes

Returns:

the last error recorded by the native library

Throws:

CloudproofException - in case of native library error

get_last_error

public static String get_last_error(int max_len)
                             throws CloudproofException

Return the last error in a String that does not exceed `max_len` bytes

Parameters:

max_len - the maximum number of bytes to return

Returns:

the error

Throws:

CloudproofException - in case of native library error

set_error

public void set_error(String error_msg)
               throws CloudproofException

Set the last error on the native lib

Parameters:

error_msg - the last error to set on the native lib

Throws:

CloudproofException - n case of native library error