slot.c

来自「支持SSL v2/v3, TLS, PKCS #5, PKCS #7, PKCS」· C语言 代码 · 共 754 行 · 第 1/2 页

/* 
 * The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/MPL/
 * 
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 * 
 * The Original Code is the Netscape security libraries.
 * 
 * The Initial Developer of the Original Code is Netscape
 * Communications Corporation.  Portions created by Netscape are 
 * Copyright (C) 1994-2000 Netscape Communications Corporation.  All
 * Rights Reserved.
 * 
 * Contributor(s):
 * 
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL"), in which case the provisions of the GPL are applicable 
 * instead of those above.  If you wish to allow use of your 
 * version of this file only under the terms of the GPL and not to
 * allow others to use your version of this file under the MPL,
 * indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by
 * the GPL.  If you do not delete the provisions above, a recipient
 * may use your version of this file under either the MPL or the
 * GPL.
 */

#ifdef DEBUG
static const char CVS_ID[] = "@(#) $RCSfile: slot.c,v $ $Revision: 1.3 $ $Date: 2000/09/06 22:23:57 $ $Name: NSS_3_1_1_RTM $";
#endif /* DEBUG */

/*
 * slot.c
 *
 * This file implements the NSSCKFWSlot type and methods.
 */

#ifndef CK_T
#include "ck.h"
#endif /* CK_T */

/*
 * NSSCKFWSlot
 *
 *  -- create/destroy --
 *  nssCKFWSlot_Create
 *  nssCKFWSlot_Destroy
 *
 *  -- public accessors --
 *  NSSCKFWSlot_GetMDSlot
 *  NSSCKFWSlot_GetFWInstance
 *  NSSCKFWSlot_GetMDInstance
 *
 *  -- implement public accessors --
 *  nssCKFWSlot_GetMDSlot
 *  nssCKFWSlot_GetFWInstance
 *  nssCKFWSlot_GetMDInstance
 *
 *  -- private accessors --
 *  nssCKFWSlot_GetSlotID
 *  nssCKFWSlot_ClearToken
 *
 *  -- module fronts --
 *  nssCKFWSlot_GetSlotDescription
 *  nssCKFWSlot_GetManufacturerID
 *  nssCKFWSlot_GetTokenPresent
 *  nssCKFWSlot_GetRemovableDevice
 *  nssCKFWSlot_GetHardwareSlot
 *  nssCKFWSlot_GetHardwareVersion
 *  nssCKFWSlot_GetFirmwareVersion
 *  nssCKFWSlot_InitToken
 *  nssCKFWSlot_GetToken
 */

struct NSSCKFWSlotStr {
  NSSCKFWMutex *mutex;
  NSSCKMDSlot *mdSlot;
  NSSCKFWInstance *fwInstance;
  NSSCKMDInstance *mdInstance;
  CK_SLOT_ID slotID;

  /*
   * Everything above is set at creation time, and then not modified.
   * The invariants the mutex protects are:
   *
   * 1) Each of the cached descriptions (versions, etc.) are in an
   *    internally consistant state.
   *
   * 2) The fwToken points to the token currently in the slot, and
   *    it is in a consistant state.
   *
   * Note that the calls accessing the cached descriptions will
   * call the NSSCKMDSlot methods with the mutex locked.  Those
   * methods may then call the public NSSCKFWSlot routines.  Those
   * public routines only access the constant data above, so there's
   * no problem.  But be careful if you add to this object; mutexes
   * are in general not reentrant, so don't create deadlock situations.
   */

  NSSUTF8 *slotDescription;
  NSSUTF8 *manufacturerID;
  CK_VERSION hardwareVersion;
  CK_VERSION firmwareVersion;
  NSSCKFWToken *fwToken;
};

#ifdef DEBUG
/*
 * But first, the pointer-tracking stuff.
 *
 * NOTE: the pointer-tracking support in NSS/base currently relies
 * upon NSPR's CallOnce support.  That, however, relies upon NSPR's
 * locking, which is tied into the runtime.  We need a pointer-tracker
 * implementation that uses the locks supplied through C_Initialize.
 * That support, however, can be filled in later.  So for now, I'll
 * just do this routines as no-ops.
 */

static CK_RV
slot_add_pointer
(
  const NSSCKFWSlot *fwSlot
)
{
  return CKR_OK;
}

static CK_RV
slot_remove_pointer
(
  const NSSCKFWSlot *fwSlot
)
{
  return CKR_OK;
}

NSS_IMPLEMENT CK_RV
nssCKFWSlot_verifyPointer
(
  const NSSCKFWSlot *fwSlot
)
{
  return CKR_OK;
}

#endif /* DEBUG */

/*
 * nssCKFWSlot_Create
 *
 */
NSS_IMPLEMENT NSSCKFWSlot *
nssCKFWSlot_Create
(
  NSSCKFWInstance *fwInstance,
  NSSCKMDSlot *mdSlot,
  CK_SLOT_ID slotID,
  CK_RV *pError
)
{
  NSSCKFWSlot *fwSlot;
  NSSCKMDInstance *mdInstance;
  NSSArena *arena;

#ifdef NSSDEBUG
  if( (CK_RV *)NULL == pError ) {
    return (NSSCKFWSlot *)NULL;
  }

  *pError = nssCKFWInstance_verifyPointer(fwInstance);
  if( CKR_OK != *pError ) {
    return (NSSCKFWSlot *)NULL;
  }
#endif /* NSSDEBUG */

  mdInstance = nssCKFWInstance_GetMDInstance(fwInstance);
  if( (NSSCKMDInstance *)NULL == mdInstance ) {
    *pError = CKR_GENERAL_ERROR;
    return (NSSCKFWSlot *)NULL;
  }

  arena = nssCKFWInstance_GetArena(fwInstance, pError);
  if( (NSSArena *)NULL == arena ) {
    if( CKR_OK == *pError ) {
      *pError = CKR_GENERAL_ERROR;
    }
  }

  fwSlot = nss_ZNEW(arena, NSSCKFWSlot);
  if( (NSSCKFWSlot *)NULL == fwSlot ) {
    *pError = CKR_HOST_MEMORY;
    return (NSSCKFWSlot *)NULL;
  }

  fwSlot->mdSlot = mdSlot;
  fwSlot->fwInstance = fwInstance;
  fwSlot->mdInstance = mdInstance;
  fwSlot->slotID = slotID;

  fwSlot->mutex = nssCKFWInstance_CreateMutex(fwInstance, arena, pError);
  if( (NSSCKFWMutex *)NULL == fwSlot->mutex ) {
    if( CKR_OK == *pError ) {
      *pError = CKR_GENERAL_ERROR;
    }
    (void)nss_ZFreeIf(fwSlot);
    return (NSSCKFWSlot *)NULL;
  }

  if( (void *)NULL != (void *)mdSlot->Initialize ) {
    *pError = CKR_OK;
    *pError = mdSlot->Initialize(mdSlot, fwSlot, mdInstance, fwInstance);
    if( CKR_OK != *pError ) {
      (void)nssCKFWMutex_Destroy(fwSlot->mutex);
      (void)nss_ZFreeIf(fwSlot);
      return (NSSCKFWSlot *)NULL;
    }
  }

#ifdef DEBUG
  *pError = slot_add_pointer(fwSlot);
  if( CKR_OK != *pError ) {
    if( (void *)NULL != (void *)mdSlot->Destroy ) {
      mdSlot->Destroy(mdSlot, fwSlot, mdInstance, fwInstance);
    }

    (void)nssCKFWMutex_Destroy(fwSlot->mutex);
    (void)nss_ZFreeIf(fwSlot);
    return (NSSCKFWSlot *)NULL;
  }
#endif /* DEBUG */

  return fwSlot;
}

/*
 * nssCKFWSlot_Destroy
 *
 */
NSS_IMPLEMENT CK_RV
nssCKFWSlot_Destroy
(
  NSSCKFWSlot *fwSlot
)
{
  CK_RV error = CKR_OK;

#ifdef NSSDEBUG
  error = nssCKFWSlot_verifyPointer(fwSlot);
  if( CKR_OK != error ) {
    return error;
  }
#endif /* NSSDEBUG */

  (void)nssCKFWMutex_Destroy(fwSlot->mutex);

  if( (void *)NULL != (void *)fwSlot->mdSlot->Destroy ) {
    fwSlot->mdSlot->Destroy(fwSlot->mdSlot, fwSlot, 
      fwSlot->mdInstance, fwSlot->fwInstance);
  }

#ifdef DEBUG
  error = slot_remove_pointer(fwSlot);
#endif /* DEBUG */
  (void)nss_ZFreeIf(fwSlot);
  return error;
}

/*
 * nssCKFWSlot_GetMDSlot
 *
 */
NSS_IMPLEMENT NSSCKMDSlot *
nssCKFWSlot_GetMDSlot
(
  NSSCKFWSlot *fwSlot
)
{
#ifdef NSSDEBUG
  if( CKR_OK != nssCKFWSlot_verifyPointer(fwSlot) ) {
    return (NSSCKMDSlot *)NULL;
  }
#endif /* NSSDEBUG */

  return fwSlot->mdSlot;
}

/*
 * nssCKFWSlot_GetFWInstance
 *
 */

NSS_IMPLEMENT NSSCKFWInstance *
nssCKFWSlot_GetFWInstance
(
  NSSCKFWSlot *fwSlot
)
{
#ifdef NSSDEBUG
  if( CKR_OK != nssCKFWSlot_verifyPointer(fwSlot) ) {
    return (NSSCKFWInstance *)NULL;
  }
#endif /* NSSDEBUG */

  return fwSlot->fwInstance;
}

/*
 * nssCKFWSlot_GetMDInstance
 *
 */

NSS_IMPLEMENT NSSCKMDInstance *
nssCKFWSlot_GetMDInstance
(
  NSSCKFWSlot *fwSlot
)
{
#ifdef NSSDEBUG
  if( CKR_OK != nssCKFWSlot_verifyPointer(fwSlot) ) {
    return (NSSCKMDInstance *)NULL;
  }
#endif /* NSSDEBUG */

  return fwSlot->mdInstance;
}

/*
 * nssCKFWSlot_GetSlotID
 *
 */
NSS_IMPLEMENT CK_SLOT_ID
nssCKFWSlot_GetSlotID
(
  NSSCKFWSlot *fwSlot
)
{
#ifdef NSSDEBUG
  if( CKR_OK != nssCKFWSlot_verifyPointer(fwSlot) ) {
    return (CK_SLOT_ID)0;
  }
#endif /* NSSDEBUG */

  return fwSlot->slotID;
}

/*
 * nssCKFWSlot_GetSlotDescription
 *
 */
NSS_IMPLEMENT CK_RV
nssCKFWSlot_GetSlotDescription
(
  NSSCKFWSlot *fwSlot,
  CK_CHAR slotDescription[64]
)
{
  CK_RV error = CKR_OK;

#ifdef NSSDEBUG
  if( (CK_CHAR_PTR)NULL == slotDescription ) {
    return CKR_ARGUMENTS_BAD;
  }

  error = nssCKFWSlot_verifyPointer(fwSlot);
  if( CKR_OK != error ) {
    return error;
  }
#endif /* NSSDEBUG */

  error = nssCKFWMutex_Lock(fwSlot->mutex);
  if( CKR_OK != error ) {