/*

 */

/* 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.

 */

/*

 * pkcs11wrapper.c

 * 18.05.2001

 *

 * This module contains the native functions of the Java to PKCS#11 interface

 * which are platform dependent. This includes loading a dynamic link libary,

 * retrieving the function list and unloading the dynamic link library.

 *

 * @author Karl Scheibelhofer <Karl.Scheibelhofer@iaik.at>

 */

#include "pkcs11wrapper.h"

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <assert.h>

#include <dlfcn.h>

#include <link.h>

#include <jni.h>

#include "sun_security_pkcs11_wrapper_PKCS11.h"

/*

 * Class:     sun_security_pkcs11_wrapper_PKCS11

 * Method:    connect

 * Signature: (Ljava/lang/String;)V

 */

JNIEXPORT void JNICALL Java_sun_security_pkcs11_wrapper_PKCS11_connect

    (JNIEnv *env, jobject obj, jstring jPkcs11ModulePath, jstring jGetFunctionList)

{

    void *hModule;

    char *error;

    CK_C_GetFunctionList C_GetFunctionList;

    CK_RV rv;

    ModuleData *moduleData;

    jobject globalPKCS11ImplementationReference;

    char *systemErrorMessage;

    char *exceptionMessage;

    const char *getFunctionListStr;

    const char *libraryNameStr = (*env)->GetStringUTFChars(env, jPkcs11ModulePath, 0);

    TRACE1("DEBUG: connect to PKCS#11 module: %s ... ", libraryNameStr);

    /*

     * Load the PKCS #11 DLL

     */

    dlerror(); /* clear any old error message not fetched */

#ifdef DEBUG

    hModule = dlopen(libraryNameStr, RTLD_NOW);

#else

    hModule = dlopen(libraryNameStr, RTLD_LAZY);

#endif /* DEBUG */

    if (hModule == NULL) {

        systemErrorMessage = dlerror();

        exceptionMessage = (char *) malloc(sizeof(char) * (strlen(systemErrorMessage) + strlen(libraryNameStr) + 1));

        strcpy(exceptionMessage, systemErrorMessage);

        strcat(exceptionMessage, libraryNameStr);

        throwIOException(env, exceptionMessage);

        (*env)->ReleaseStringUTFChars(env, jPkcs11ModulePath, libraryNameStr);

        free(exceptionMessage);

        return;

    }

    /*

     * Get function pointer to C_GetFunctionList

     */

    dlerror(); /* clear any old error message not fetched */

    // with the old JAR file jGetFunctionList is null, temporarily check for that

    if (jGetFunctionList != NULL) {

        getFunctionListStr = (*env)->GetStringUTFChars(env, jGetFunctionList, 0);

        C_GetFunctionList = (CK_C_GetFunctionList) dlsym(hModule, getFunctionListStr);

        (*env)->ReleaseStringUTFChars(env, jGetFunctionList, getFunctionListStr);

    }

    if (C_GetFunctionList == NULL) {

        throwIOException(env, "ERROR: C_GetFunctionList == NULL");

        return;

    } else if ( (systemErrorMessage = dlerror()) != NULL ){

        throwIOException(env, systemErrorMessage);

        return;

    }

    /*

     * Get function pointers to all PKCS #11 functions

     */

    moduleData = (ModuleData *) malloc(sizeof(ModuleData));

    moduleData->hModule = hModule;

    moduleData->applicationMutexHandler = NULL;

    rv = (C_GetFunctionList)(&(moduleData->ckFunctionListPtr));

    globalPKCS11ImplementationReference = (*env)->NewGlobalRef(env, obj);

    putModuleEntry(env, globalPKCS11ImplementationReference, moduleData);

    (*env)->ReleaseStringUTFChars(env, jPkcs11ModulePath, libraryNameStr);

    TRACE0("FINISHED\n");

    if(ckAssertReturnValueOK(env, rv) != CK_ASSERT_OK) { return; }

}

/*

 * Class:     sun_security_pkcs11_wrapper_PKCS11

 * Method:    disconnect

 * Signature: ()V

 */

JNIEXPORT void JNICALL Java_sun_security_pkcs11_wrapper_PKCS11_disconnect

    (JNIEnv *env, jobject obj)

{

    ModuleData *moduleData;

    TRACE0("DEBUG: disconnecting module...");

    moduleData = removeModuleEntry(env, obj);

    if (moduleData != NULL) {

        dlclose(moduleData->hModule);

    }

    free(moduleData);

    TRACE0("FINISHED\n");

}