/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "builtins.h"

/*
 * builtins/object.c
 *
 * This file implements the NSSCKMDObject object for the
 * "builtin objects" cryptoki module.
 */

/*
 * Finalize - unneeded
 * Destroy - CKR_SESSION_READ_ONLY
 * IsTokenObject - CK_TRUE
 * GetAttributeCount
 * GetAttributeTypes
 * GetAttributeSize
 * GetAttribute
 * SetAttribute - unneeded
 * GetObjectSize
 */

static CK_RV
builtins_mdObject_Destroy
(
  NSSCKMDObject *mdObject,
  NSSCKFWObject *fwObject,
  NSSCKMDSession *mdSession,
  NSSCKFWSession *fwSession,
  NSSCKMDToken *mdToken,
  NSSCKFWToken *fwToken,
  NSSCKMDInstance *mdInstance,
  NSSCKFWInstance *fwInstance
)
{
  return CKR_SESSION_READ_ONLY;
}

static CK_BBOOL
builtins_mdObject_IsTokenObject
(
  NSSCKMDObject *mdObject,
  NSSCKFWObject *fwObject,
  NSSCKMDSession *mdSession,
  NSSCKFWSession *fwSession,
  NSSCKMDToken *mdToken,
  NSSCKFWToken *fwToken,
  NSSCKMDInstance *mdInstance,
  NSSCKFWInstance *fwInstance
)
{
  return CK_TRUE;
}

static CK_ULONG
builtins_mdObject_GetAttributeCount
(
  NSSCKMDObject *mdObject,
  NSSCKFWObject *fwObject,
  NSSCKMDSession *mdSession,
  NSSCKFWSession *fwSession,
  NSSCKMDToken *mdToken,
  NSSCKFWToken *fwToken,
  NSSCKMDInstance *mdInstance,
  NSSCKFWInstance *fwInstance,
  CK_RV *pError
)
{
  builtinsInternalObject *io = (builtinsInternalObject *)mdObject->etc;
  return io->n;
}

static CK_RV
builtins_mdObject_GetAttributeTypes
(
  NSSCKMDObject *mdObject,
  NSSCKFWObject *fwObject,
  NSSCKMDSession *mdSession,
  NSSCKFWSession *fwSession,
  NSSCKMDToken *mdToken,
  NSSCKFWToken *fwToken,
  NSSCKMDInstance *mdInstance,
  NSSCKFWInstance *fwInstance,
  CK_ATTRIBUTE_TYPE_PTR typeArray,
  CK_ULONG ulCount
)
{
  builtinsInternalObject *io = (builtinsInternalObject *)mdObject->etc;
  CK_ULONG i;

  if( io->n != ulCount ) {
    return CKR_BUFFER_TOO_SMALL;
  }

  for( i = 0; i < io->n; i++ ) {
    typeArray[i] = io->types[i];
  }

  return CKR_OK;
}

static CK_ULONG
builtins_mdObject_GetAttributeSize
(
  NSSCKMDObject *mdObject,
  NSSCKFWObject *fwObject,
  NSSCKMDSession *mdSession,
  NSSCKFWSession *fwSession,
  NSSCKMDToken *mdToken,
  NSSCKFWToken *fwToken,
  NSSCKMDInstance *mdInstance,
  NSSCKFWInstance *fwInstance,
  CK_ATTRIBUTE_TYPE attribute,
  CK_RV *pError
)
{
  builtinsInternalObject *io = (builtinsInternalObject *)mdObject->etc;
  CK_ULONG i;

  for( i = 0; i < io->n; i++ ) {
    if( attribute == io->types[i] ) {
      return (CK_ULONG)(io->items[i].size);
    }
  }

  *pError = CKR_ATTRIBUTE_TYPE_INVALID;
  return 0;
}

static NSSCKFWItem
builtins_mdObject_GetAttribute
(
  NSSCKMDObject *mdObject,
  NSSCKFWObject *fwObject,
  NSSCKMDSession *mdSession,
  NSSCKFWSession *fwSession,
  NSSCKMDToken *mdToken,
  NSSCKFWToken *fwToken,
  NSSCKMDInstance *mdInstance,
  NSSCKFWInstance *fwInstance,
  CK_ATTRIBUTE_TYPE attribute,
  CK_RV *pError
)
{
  NSSCKFWItem mdItem;
  builtinsInternalObject *io = (builtinsInternalObject *)mdObject->etc;
  CK_ULONG i;

  mdItem.needsFreeing = PR_FALSE;
  mdItem.item = (NSSItem*) NULL;

  for( i = 0; i < io->n; i++ ) {
    if( attribute == io->types[i] ) {
      mdItem.item = (NSSItem*) &io->items[i];
      return mdItem;
    }
  }

  *pError = CKR_ATTRIBUTE_TYPE_INVALID;
  return mdItem;
}

static CK_ULONG
builtins_mdObject_GetObjectSize
(
  NSSCKMDObject *mdObject,
  NSSCKFWObject *fwObject,
  NSSCKMDSession *mdSession,
  NSSCKFWSession *fwSession,
  NSSCKMDToken *mdToken,
  NSSCKFWToken *fwToken,
  NSSCKMDInstance *mdInstance,
  NSSCKFWInstance *fwInstance,
  CK_RV *pError
)
{
  builtinsInternalObject *io = (builtinsInternalObject *)mdObject->etc;
  CK_ULONG i;
  CK_ULONG rv = sizeof(CK_ULONG);

  for( i = 0; i < io->n; i++ ) {
    rv += sizeof(CK_ATTRIBUTE_TYPE) + sizeof(NSSItem) + io->items[i].size;
  }

  return rv;
}

static const NSSCKMDObject
builtins_prototype_mdObject = {
  (void *)NULL, /* etc */
  NULL, /* Finalize */
  builtins_mdObject_Destroy,
  builtins_mdObject_IsTokenObject,
  builtins_mdObject_GetAttributeCount,
  builtins_mdObject_GetAttributeTypes,
  builtins_mdObject_GetAttributeSize,
  builtins_mdObject_GetAttribute,
  NULL, /* FreeAttribute */
  NULL, /* SetAttribute */
  builtins_mdObject_GetObjectSize,
  (void *)NULL /* null terminator */
};

NSS_IMPLEMENT NSSCKMDObject *
nss_builtins_CreateMDObject
(
  NSSArena *arena,
  builtinsInternalObject *io,
  CK_RV *pError
)
{
  if ( (void*)NULL == io->mdObject.etc) {
    (void) nsslibc_memcpy(&io->mdObject,&builtins_prototype_mdObject,
					sizeof(builtins_prototype_mdObject));
    io->mdObject.etc = (void *)io;
  }

  return &io->mdObject;
}
