This example Java source code file (p11_util.c) is included in the alvinalexander.com
"Java Source Code
Warehouse" project. The intent of this project is to help you "Learn
Java by Example" TM.
/*
* Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
*/
/* Copyright (c) 2002 Graz University of Technology. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The end-user documentation included with the redistribution, if any, must
* include the following acknowledgment:
*
* "This product includes software developed by IAIK of Graz University of
* Technology."
*
* Alternately, this acknowledgment may appear in the software itself, if
* and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Graz University of Technology" and "IAIK of Graz University of
* Technology" must not be used to endorse or promote products derived from
* this software without prior written permission.
*
* 5. Products derived from this software may not be called
* "IAIK PKCS Wrapper", nor may "IAIK" appear in their name, without prior
* written permission of Graz University of Technology.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE LICENSOR BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "pkcs11wrapper.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
/* declare file private functions */
ModuleData * getModuleEntry(JNIEnv *env, jobject pkcs11Implementation);
int isModulePresent(JNIEnv *env, jobject pkcs11Implementation);
void removeAllModuleEntries(JNIEnv *env);
/* ************************************************************************** */
/* Functions for keeping track of currently active and loaded modules */
/* ************************************************************************** */
/*
* Create a new object for locking.
*/
jobject createLockObject(JNIEnv *env) {
jclass jObjectClass;
jobject jLockObject;
jmethodID jConstructor;
jObjectClass = (*env)->FindClass(env, "java/lang/Object");
if (jObjectClass == NULL) { return NULL; }
jConstructor = (*env)->GetMethodID(env, jObjectClass, "<init>", "()V");
if (jConstructor == NULL) { return NULL; }
jLockObject = (*env)->NewObject(env, jObjectClass, jConstructor);
if (jLockObject == NULL) { return NULL; }
jLockObject = (*env)->NewGlobalRef(env, jLockObject);
return jLockObject ;
}
/*
* Create a new object for locking.
*/
void destroyLockObject(JNIEnv *env, jobject jLockObject) {
if (jLockObject != NULL) {
(*env)->DeleteGlobalRef(env, jLockObject);
}
}
/*
* Add the given pkcs11Implementation object to the list of present modules.
* Attach the given data to the entry. If the given pkcs11Implementation is
* already in the lsit, just override its old module data with the new one.
* None of the arguments can be NULL. If one of the arguments is NULL, this
* function does nothing.
*/
void putModuleEntry(JNIEnv *env, jobject pkcs11Implementation, ModuleData *moduleData) {
if (pkcs11Implementation == NULL_PTR) {
return ;
}
if (moduleData == NULL) {
return ;
}
(*env)->SetLongField(env, pkcs11Implementation, pNativeDataID, ptr_to_jlong(moduleData));
}
/*
* Get the module data of the entry for the given pkcs11Implementation. Returns
* NULL, if the pkcs11Implementation is not in the list.
*/
ModuleData * getModuleEntry(JNIEnv *env, jobject pkcs11Implementation) {
jlong jData;
if (pkcs11Implementation == NULL) {
return NULL;
}
jData = (*env)->GetLongField(env, pkcs11Implementation, pNativeDataID);
return (ModuleData*)jlong_to_ptr(jData);
}
CK_FUNCTION_LIST_PTR getFunctionList(JNIEnv *env, jobject pkcs11Implementation) {
ModuleData *moduleData;
CK_FUNCTION_LIST_PTR ckpFunctions;
moduleData = getModuleEntry(env, pkcs11Implementation);
if (moduleData == NULL) {
throwDisconnectedRuntimeException(env);
return NULL;
}
ckpFunctions = moduleData->ckFunctionListPtr;
return ckpFunctions;
}
/*
* Returns 1, if the given pkcs11Implementation is in the list.
* 0, otherwise.
*/
int isModulePresent(JNIEnv *env, jobject pkcs11Implementation) {
int present;
ModuleData *moduleData = getModuleEntry(env, pkcs11Implementation);
present = (moduleData != NULL) ? 1 : 0;
return present ;
}
/*
* Removes the entry for the given pkcs11Implementation from the list. Returns
* the module's data, after the node was removed. If this function returns NULL
* the pkcs11Implementation was not in the list.
*/
ModuleData * removeModuleEntry(JNIEnv *env, jobject pkcs11Implementation) {
ModuleData *moduleData = getModuleEntry(env, pkcs11Implementation);
if (moduleData == NULL) {
return NULL;
}
(*env)->SetLongField(env, pkcs11Implementation, pNativeDataID, 0);
return moduleData;
}
/*
* Removes all present entries from the list of modules and frees all
* associated resources. This function is used for clean-up.
*/
void removeAllModuleEntries(JNIEnv *env) {
/* XXX empty */
}
/* ************************************************************************** */
/* Below there follow the helper functions to support conversions between */
/* Java and Cryptoki types */
/* ************************************************************************** */
/*
* function to convert a PKCS#11 return value into a PKCS#11Exception
*
* This function generates a PKCS#11Exception with the returnValue as the errorcode
* if the returnValue is not CKR_OK. The functin returns 0, if the returnValue is
* CKR_OK. Otherwise, it returns the returnValue as a jLong.
*
* @param env - used to call JNI funktions and to get the Exception class
* @param returnValue - of the PKCS#11 function
*/
jlong ckAssertReturnValueOK(JNIEnv *env, CK_RV returnValue)
{
jclass jPKCS11ExceptionClass;
jmethodID jConstructor;
jthrowable jPKCS11Exception;
jlong jErrorCode = 0L;
if (returnValue != CKR_OK) {
jErrorCode = ckULongToJLong(returnValue);
jPKCS11ExceptionClass = (*env)->FindClass(env, CLASS_PKCS11EXCEPTION);
if (jPKCS11ExceptionClass != NULL) {
jConstructor = (*env)->GetMethodID(env, jPKCS11ExceptionClass, "<init>", "(J)V");
if (jConstructor != NULL) {
jPKCS11Exception = (jthrowable) (*env)->NewObject(env, jPKCS11ExceptionClass, jConstructor, jErrorCode);
if (jPKCS11Exception != NULL) {
(*env)->Throw(env, jPKCS11Exception);
}
}
}
(*env)->DeleteLocalRef(env, jPKCS11ExceptionClass);
}
return jErrorCode ;
}
/*
* Throws a Java Exception by name
*/
void throwByName(JNIEnv *env, const char *name, const char *msg)
{
jclass cls = (*env)->FindClass(env, name);
if (cls != 0) /* Otherwise an exception has already been thrown */
(*env)->ThrowNew(env, cls, msg);
}
/*
* Throws java.lang.OutOfMemoryError
*/
void throwOutOfMemoryError(JNIEnv *env, const char *msg)
{
throwByName(env, "java/lang/OutOfMemoryError", msg);
}
/*
* Throws java.lang.NullPointerException
*/
void throwNullPointerException(JNIEnv *env, const char *msg)
{
throwByName(env, "java/lang/NullPointerException", msg);
}
/*
* Throws java.io.IOException
*/
void throwIOException(JNIEnv *env, const char *msg)
{
throwByName(env, "java/io/IOException", msg);
}
/*
* This function simply throws a PKCS#11RuntimeException with the given
* string as its message.
*
* @param env Used to call JNI funktions and to get the Exception class.
* @param jmessage The message string of the Exception object.
*/
void throwPKCS11RuntimeException(JNIEnv *env, const char *message)
{
throwByName(env, CLASS_PKCS11RUNTIMEEXCEPTION, message);
}
/*
* This function simply throws a PKCS#11RuntimeException. The message says that
* the object is not connected to the module.
*
* @param env Used to call JNI funktions and to get the Exception class.
*/
void throwDisconnectedRuntimeException(JNIEnv *env)
{
throwPKCS11RuntimeException(env, "This object is not connected to a module.");
}
/* This function frees the specified CK_ATTRIBUTE array.
*
* @param attrPtr pointer to the to-be-freed CK_ATTRIBUTE array.
* @param len the length of the array
*/
void freeCKAttributeArray(CK_ATTRIBUTE_PTR attrPtr, int len)
{
int i;
for (i=0; i<len; i++) {
if (attrPtr[i].pValue != NULL_PTR) {
free(attrPtr[i].pValue);
}
}
free(attrPtr);
}
/*
* the following functions convert Java arrays to PKCS#11 array pointers and
* their array length and vice versa
*
* void j<Type>ArrayToCKArray(JNIEnv *env,
* const j<Type>Array jArray,
* CK_<Type>_PTR *ckpArray,
* CK_ULONG_PTR ckLength);
*
* j<Type>Array ckArrayToJArray(JNIEnv *env,
* const CK_<Type>_PTR ckpArray,
* CK_ULONG ckLength);
*
* PKCS#11 arrays consist always of a pointer to the beginning of the array and
* the array length whereas Java arrays carry their array length.
*
* The Functions to convert a Java array to a PKCS#11 array are void functions.
* Their arguments are the Java array object to convert, the reference to the
* array pointer, where the new PKCS#11 array should be stored and the reference
* to the array length where the PKCS#11 array length should be stored. These two
* references must not be NULL_PTR.
*
* The functions first obtain the array length of the Java array and then allocate
* the memory for the PKCS#11 array and set the array length. Then each element
* gets converted depending on their type. After use the allocated memory of the
* PKCS#11 array has to be explicitly freed.
*
* The Functions to convert a PKCS#11 array to a Java array get the PKCS#11 array
* pointer and the array length and they return the new Java array object. The
* Java array does not need to get freed after use.
*/
/*
* converts a jbooleanArray to a CK_BBOOL array. The allocated memory has to be freed after use!
*
* @param env - used to call JNI funktions to get the array informtaion
* @param jArray - the Java array to convert
* @param ckpArray - the reference, where the pointer to the new CK_BBOOL array will be stored
* @param ckpLength - the reference, where the array length will be stored
*/
void jBooleanArrayToCKBBoolArray(JNIEnv *env, const jbooleanArray jArray, CK_BBOOL **ckpArray, CK_ULONG_PTR ckpLength)
{
jboolean* jpTemp;
CK_ULONG i;
if(jArray == NULL) {
*ckpArray = NULL_PTR;
*ckpLength = 0L;
return;
}
*ckpLength = (*env)->GetArrayLength(env, jArray);
jpTemp = (jboolean*) malloc((*ckpLength) * sizeof(jboolean));
if (jpTemp == NULL) {
throwOutOfMemoryError(env, 0);
return;
}
(*env)->GetBooleanArrayRegion(env, jArray, 0, *ckpLength, jpTemp);
if ((*env)->ExceptionCheck(env)) {
free(jpTemp);
return;
}
*ckpArray = (CK_BBOOL*) malloc ((*ckpLength) * sizeof(CK_BBOOL));
if (*ckpArray == NULL) {
free(jpTemp);
throwOutOfMemoryError(env, 0);
return;
}
for (i=0; i<(*ckpLength); i++) {
(*ckpArray)[i] = jBooleanToCKBBool(jpTemp[i]);
}
free(jpTemp);
}
/*
* converts a jbyteArray to a CK_BYTE array. The allocated memory has to be freed after use!
*
* @param env - used to call JNI funktions to get the array informtaion
* @param jArray - the Java array to convert
* @param ckpArray - the reference, where the pointer to the new CK_BYTE array will be stored
* @param ckpLength - the reference, where the array length will be stored
*/
void jByteArrayToCKByteArray(JNIEnv *env, const jbyteArray jArray, CK_BYTE_PTR *ckpArray, CK_ULONG_PTR ckpLength)
{
jbyte* jpTemp;
CK_ULONG i;
if(jArray == NULL) {
*ckpArray = NULL_PTR;
*ckpLength = 0L;
return;
}
*ckpLength = (*env)->GetArrayLength(env, jArray);
jpTemp = (jbyte*) malloc((*ckpLength) * sizeof(jbyte));
if (jpTemp == NULL) {
throwOutOfMemoryError(env, 0);
return;
}
(*env)->GetByteArrayRegion(env, jArray, 0, *ckpLength, jpTemp);
if ((*env)->ExceptionCheck(env)) {
free(jpTemp);
return;
}
/* if CK_BYTE is the same size as jbyte, we save an additional copy */
if (sizeof(CK_BYTE) == sizeof(jbyte)) {
*ckpArray = (CK_BYTE_PTR) jpTemp;
} else {
*ckpArray = (CK_BYTE_PTR) malloc ((*ckpLength) * sizeof(CK_BYTE));
if (*ckpArray == NULL) {
free(jpTemp);
throwOutOfMemoryError(env, 0);
return;
}
for (i=0; i<(*ckpLength); i++) {
(*ckpArray)[i] = jByteToCKByte(jpTemp[i]);
}
free(jpTemp);
}
}
/*
* converts a jlongArray to a CK_ULONG array. The allocated memory has to be freed after use!
*
* @param env - used to call JNI funktions to get the array informtaion
* @param jArray - the Java array to convert
* @param ckpArray - the reference, where the pointer to the new CK_ULONG array will be stored
* @param ckpLength - the reference, where the array length will be stored
*/
void jLongArrayToCKULongArray(JNIEnv *env, const jlongArray jArray, CK_ULONG_PTR *ckpArray, CK_ULONG_PTR ckpLength)
{
jlong* jTemp;
CK_ULONG i;
if(jArray == NULL) {
*ckpArray = NULL_PTR;
*ckpLength = 0L;
return;
}
*ckpLength = (*env)->GetArrayLength(env, jArray);
jTemp = (jlong*) malloc((*ckpLength) * sizeof(jlong));
if (jTemp == NULL) {
throwOutOfMemoryError(env, 0);
return;
}
(*env)->GetLongArrayRegion(env, jArray, 0, *ckpLength, jTemp);
if ((*env)->ExceptionCheck(env)) {
free(jTemp);
return;
}
*ckpArray = (CK_ULONG_PTR) malloc (*ckpLength * sizeof(CK_ULONG));
if (*ckpArray == NULL) {
free(jTemp);
throwOutOfMemoryError(env, 0);
return;
}
for (i=0; i<(*ckpLength); i++) {
(*ckpArray)[i] = jLongToCKULong(jTemp[i]);
}
free(jTemp);
}
/*
* converts a jcharArray to a CK_CHAR array. The allocated memory has to be freed after use!
*
* @param env - used to call JNI funktions to get the array informtaion
* @param jArray - the Java array to convert
* @param ckpArray - the reference, where the pointer to the new CK_CHAR array will be stored
* @param ckpLength - the reference, where the array length will be stored
*/
void jCharArrayToCKCharArray(JNIEnv *env, const jcharArray jArray, CK_CHAR_PTR *ckpArray, CK_ULONG_PTR ckpLength)
{
jchar* jpTemp;
CK_ULONG i;
if(jArray == NULL) {
*ckpArray = NULL_PTR;
*ckpLength = 0L;
return;
}
*ckpLength = (*env)->GetArrayLength(env, jArray);
jpTemp = (jchar*) malloc((*ckpLength) * sizeof(jchar));
if (jpTemp == NULL) {
throwOutOfMemoryError(env, 0);
return;
}
(*env)->GetCharArrayRegion(env, jArray, 0, *ckpLength, jpTemp);
if ((*env)->ExceptionCheck(env)) {
free(jpTemp);
return;
}
*ckpArray = (CK_CHAR_PTR) malloc (*ckpLength * sizeof(CK_CHAR));
if (*ckpArray == NULL) {
free(jpTemp);
throwOutOfMemoryError(env, 0);
return;
}
for (i=0; i<(*ckpLength); i++) {
(*ckpArray)[i] = jCharToCKChar(jpTemp[i]);
}
free(jpTemp);
}
/*
* converts a jcharArray to a CK_UTF8CHAR array. The allocated memory has to be freed after use!
*
* @param env - used to call JNI funktions to get the array informtaion
* @param jArray - the Java array to convert
* @param ckpArray - the reference, where the pointer to the new CK_UTF8CHAR array will be stored
* @param ckpLength - the reference, where the array length will be stored
*/
void jCharArrayToCKUTF8CharArray(JNIEnv *env, const jcharArray jArray, CK_UTF8CHAR_PTR *ckpArray, CK_ULONG_PTR ckpLength)
{
jchar* jTemp;
CK_ULONG i;
if(jArray == NULL) {
*ckpArray = NULL_PTR;
*ckpLength = 0L;
return;
}
*ckpLength = (*env)->GetArrayLength(env, jArray);
jTemp = (jchar*) malloc((*ckpLength) * sizeof(jchar));
if (jTemp == NULL) {
throwOutOfMemoryError(env, 0);
return;
}
(*env)->GetCharArrayRegion(env, jArray, 0, *ckpLength, jTemp);
if ((*env)->ExceptionCheck(env)) {
free(jTemp);
return;
}
*ckpArray = (CK_UTF8CHAR_PTR) malloc (*ckpLength * sizeof(CK_UTF8CHAR));
if (*ckpArray == NULL) {
free(jTemp);
throwOutOfMemoryError(env, 0);
return;
}
for (i=0; i<(*ckpLength); i++) {
(*ckpArray)[i] = jCharToCKUTF8Char(jTemp[i]);
}
free(jTemp);
}
/*
* converts a jstring to a CK_CHAR array. The allocated memory has to be freed after use!
*
* @param env - used to call JNI funktions to get the array informtaion
* @param jArray - the Java array to convert
* @param ckpArray - the reference, where the pointer to the new CK_CHAR array will be stored
* @param ckpLength - the reference, where the array length will be stored
*/
void jStringToCKUTF8CharArray(JNIEnv *env, const jstring jArray, CK_UTF8CHAR_PTR *ckpArray, CK_ULONG_PTR ckpLength)
{
const char* pCharArray;
jboolean isCopy;
if(jArray == NULL) {
*ckpArray = NULL_PTR;
*ckpLength = 0L;
return;
}
pCharArray = (*env)->GetStringUTFChars(env, jArray, &isCopy);
if (pCharArray == NULL) { return; }
*ckpLength = strlen(pCharArray);
*ckpArray = (CK_UTF8CHAR_PTR) malloc((*ckpLength + 1) * sizeof(CK_UTF8CHAR));
if (*ckpArray == NULL) {
(*env)->ReleaseStringUTFChars(env, (jstring) jArray, pCharArray);
throwOutOfMemoryError(env, 0);
return;
}
strcpy((char*)*ckpArray, pCharArray);
(*env)->ReleaseStringUTFChars(env, (jstring) jArray, pCharArray);
}
/*
* converts a jobjectArray with Java Attributes to a CK_ATTRIBUTE array. The allocated memory
* has to be freed after use!
*
* @param env - used to call JNI funktions to get the array informtaion
* @param jArray - the Java Attribute array (template) to convert
* @param ckpArray - the reference, where the pointer to the new CK_ATTRIBUTE array will be
* stored
* @param ckpLength - the reference, where the array length will be stored
*/
void jAttributeArrayToCKAttributeArray(JNIEnv *env, jobjectArray jArray, CK_ATTRIBUTE_PTR *ckpArray, CK_ULONG_PTR ckpLength)
{
CK_ULONG i;
jlong jLength;
jobject jAttribute;
TRACE0("\nDEBUG: jAttributeArrayToCKAttributeArray");
if (jArray == NULL) {
*ckpArray = NULL_PTR;
*ckpLength = 0L;
return;
}
jLength = (*env)->GetArrayLength(env, jArray);
*ckpLength = jLongToCKULong(jLength);
*ckpArray = (CK_ATTRIBUTE_PTR) malloc(*ckpLength * sizeof(CK_ATTRIBUTE));
if (*ckpArray == NULL) {
throwOutOfMemoryError(env, 0);
return;
}
TRACE1(", converting %d attributes", jLength);
for (i=0; i<(*ckpLength); i++) {
TRACE1(", getting %d. attribute", i);
jAttribute = (*env)->GetObjectArrayElement(env, jArray, i);
if ((*env)->ExceptionCheck(env)) {
freeCKAttributeArray(*ckpArray, i);
return;
}
TRACE1(", jAttribute = %d", jAttribute);
TRACE1(", converting %d. attribute", i);
(*ckpArray)[i] = jAttributeToCKAttribute(env, jAttribute);
if ((*env)->ExceptionCheck(env)) {
freeCKAttributeArray(*ckpArray, i);
return;
}
}
TRACE0("FINISHED\n");
}
/*
* converts a CK_BYTE array and its length to a jbyteArray.
*
* @param env - used to call JNI funktions to create the new Java array
* @param ckpArray - the pointer to the CK_BYTE array to convert
* @param ckpLength - the length of the array to convert
* @return - the new Java byte array or NULL if error occurred
*/
jbyteArray ckByteArrayToJByteArray(JNIEnv *env, const CK_BYTE_PTR ckpArray, CK_ULONG ckLength)
{
CK_ULONG i;
jbyte* jpTemp;
jbyteArray jArray;
/* if CK_BYTE is the same size as jbyte, we save an additional copy */
if (sizeof(CK_BYTE) == sizeof(jbyte)) {
jpTemp = (jbyte*) ckpArray;
} else {
jpTemp = (jbyte*) malloc((ckLength) * sizeof(jbyte));
if (jpTemp == NULL) {
throwOutOfMemoryError(env, 0);
return NULL;
}
for (i=0; i<ckLength; i++) {
jpTemp[i] = ckByteToJByte(ckpArray[i]);
}
}
jArray = (*env)->NewByteArray(env, ckULongToJSize(ckLength));
if (jArray != NULL) {
(*env)->SetByteArrayRegion(env, jArray, 0, ckULongToJSize(ckLength), jpTemp);
}
if (sizeof(CK_BYTE) != sizeof(jbyte)) { free(jpTemp); }
return jArray ;
}
/*
* converts a CK_ULONG array and its length to a jlongArray.
*
* @param env - used to call JNI funktions to create the new Java array
* @param ckpArray - the pointer to the CK_ULONG array to convert
* @param ckpLength - the length of the array to convert
* @return - the new Java long array
*/
jlongArray ckULongArrayToJLongArray(JNIEnv *env, const CK_ULONG_PTR ckpArray, CK_ULONG ckLength)
{
CK_ULONG i;
jlong* jpTemp;
jlongArray jArray;
jpTemp = (jlong*) malloc((ckLength) * sizeof(jlong));
if (jpTemp == NULL) {
throwOutOfMemoryError(env, 0);
return NULL;
}
for (i=0; i<ckLength; i++) {
jpTemp[i] = ckLongToJLong(ckpArray[i]);
}
jArray = (*env)->NewLongArray(env, ckULongToJSize(ckLength));
if (jArray != NULL) {
(*env)->SetLongArrayRegion(env, jArray, 0, ckULongToJSize(ckLength), jpTemp);
}
free(jpTemp);
return jArray ;
}
/*
* converts a CK_CHAR array and its length to a jcharArray.
*
* @param env - used to call JNI funktions to create the new Java array
* @param ckpArray - the pointer to the CK_CHAR array to convert
* @param ckpLength - the length of the array to convert
* @return - the new Java char array
*/
jcharArray ckCharArrayToJCharArray(JNIEnv *env, const CK_CHAR_PTR ckpArray, CK_ULONG ckLength)
{
CK_ULONG i;
jchar* jpTemp;
jcharArray jArray;
jpTemp = (jchar*) malloc(ckLength * sizeof(jchar));
if (jpTemp == NULL) {
throwOutOfMemoryError(env, 0);
return NULL;
}
for (i=0; i<ckLength; i++) {
jpTemp[i] = ckCharToJChar(ckpArray[i]);
}
jArray = (*env)->NewCharArray(env, ckULongToJSize(ckLength));
if (jArray != NULL) {
(*env)->SetCharArrayRegion(env, jArray, 0, ckULongToJSize(ckLength), jpTemp);
}
free(jpTemp);
return jArray ;
}
/*
* converts a CK_UTF8CHAR array and its length to a jcharArray.
*
* @param env - used to call JNI funktions to create the new Java array
* @param ckpArray - the pointer to the CK_UTF8CHAR array to convert
* @param ckpLength - the length of the array to convert
* @return - the new Java char array
*/
jcharArray ckUTF8CharArrayToJCharArray(JNIEnv *env, const CK_UTF8CHAR_PTR ckpArray, CK_ULONG ckLength)
{
CK_ULONG i;
jchar* jpTemp;
jcharArray jArray;
jpTemp = (jchar*) malloc(ckLength * sizeof(jchar));
if (jpTemp == NULL) {
throwOutOfMemoryError(env, 0);
return NULL;
}
for (i=0; i<ckLength; i++) {
jpTemp[i] = ckUTF8CharToJChar(ckpArray[i]);
}
jArray = (*env)->NewCharArray(env, ckULongToJSize(ckLength));
if (jArray != NULL) {
(*env)->SetCharArrayRegion(env, jArray, 0, ckULongToJSize(ckLength), jpTemp);
}
free(jpTemp);
return jArray ;
}
/*
* the following functions convert Java objects to PKCS#11 pointers and the
* length in bytes and vice versa
*
* CK_<Type>_PTR j
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