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/* ***** BEGIN COPYRIGHT BLOCK *****
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation version
* 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
* ***** END COPYRIGHT BLOCK *****/
#include <assert.h>
#include "mypkcs11.h"
#include <string>
#include "locking.h"
#include "log.h"
#include "PKCS11Exception.h"
class BasicMutex : public Mutex {
public:
BasicMutex(CK_C_INITIALIZE_ARGS *initArgs);
virtual ~BasicMutex();
virtual void lock();
virtual void unlock();
private:
void *mutex;
CK_C_INITIALIZE_ARGS *initArgs;
};
class DummyMutex : public Mutex {
public:
virtual ~DummyMutex() { }
virtual void lock() { }
virtual void unlock() { }
};
BasicMutex::BasicMutex(CK_C_INITIALIZE_ARGS *initArgs_)
: initArgs(initArgs_)
{
assert( initArgs->CreateMutex != NULL );
assert( initArgs->DestroyMutex != NULL );
assert( initArgs->LockMutex != NULL );
assert( initArgs->UnlockMutex != NULL );
CK_RV crv = initArgs->CreateMutex(&mutex);
if( crv != CKR_OK ) {
throw PKCS11Exception(crv, "CreateMutex");
}
}
BasicMutex::~BasicMutex()
{
CK_RV crv = initArgs->DestroyMutex(mutex);
if( crv != CKR_OK ) {
throw PKCS11Exception(crv, "DestroyMutex");
}
}
void
BasicMutex::lock()
{
CK_RV crv = initArgs->LockMutex(mutex);
assert(crv != CKR_MUTEX_BAD);
if( crv != CKR_OK ) {
throw PKCS11Exception(crv, "LockMutex");
}
}
void
BasicMutex::unlock()
{
CK_RV crv = initArgs->UnlockMutex(mutex);
assert(crv != CKR_MUTEX_BAD);
assert(crv != CKR_MUTEX_NOT_LOCKED);
if( crv != CKR_OK ) {
throw PKCS11Exception(crv, "UnlockMutex");
}
}
MutexFactory::MutexFactory(const CK_C_INITIALIZE_ARGS* initArgs_)
: initArgs(NULL)
{
if( initArgs_ != NULL ) {
if( initArgs_->CreateMutex == NULL || initArgs_->DestroyMutex == NULL
|| initArgs_->LockMutex == NULL || initArgs_->UnlockMutex == NULL )
{
if( initArgs_->flags & CKF_OS_LOCKING_OK ) {
// application wants us to lock with OS primitives, which
// we can't do
throw PKCS11Exception(CKR_CANT_LOCK,
"Library cannot use OS locking primitives");
} else {
// Application is single threaded, so we won't do any
// locking. Leave initArgs == NULL.
}
} else {
// use the provided primitives for locking
initArgs = new CK_C_INITIALIZE_ARGS(*initArgs_);
}
}
}
MutexFactory::~MutexFactory()
{
if( initArgs != NULL ) {
delete initArgs;
}
}
Mutex*
MutexFactory::createMutex() const
{
if( initArgs == NULL ) {
return new DummyMutex();
} else {
return new BasicMutex(initArgs);
}
}
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