crypto/scoped_nss_types.h

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CRYPTO_SCOPED_NSS_TYPES_H_
   6 #define CRYPTO_SCOPED_NSS_TYPES_H_
   7 #pragma once
   8
   9 #include <keyhi.h>
  10 #include <nss.h>
  11 #include <pk11pub.h>
  12 #include <plarena.h>
  13
  14 #include "base/memory/scoped_ptr.h"
  15
  16 namespace crypto {
  17
  18 template <typename Type, void (*Destroyer)(Type*)>
  19 struct NSSDestroyer {
  20   void operator()(Type* ptr) const {
  21     if (ptr)
  22       Destroyer(ptr);
  23   }
  24 };
  25
  26 template <typename Type, void (*Destroyer)(Type*, PRBool), PRBool freeit>
  27 struct NSSDestroyer1 {
  28   void operator()(Type* ptr) const {
  29     if (ptr)
  30       Destroyer(ptr, freeit);
  31   }
  32 };
  33
  34 // Define some convenient scopers around NSS pointers.
  35 typedef scoped_ptr_malloc<
  36     PK11Context, NSSDestroyer1<PK11Context,
  37                                PK11_DestroyContext,
  38                                PR_TRUE> > ScopedPK11Context;
  39 typedef scoped_ptr_malloc<
  40     PK11SlotInfo, NSSDestroyer<PK11SlotInfo, PK11_FreeSlot> > ScopedPK11Slot;
  41 typedef scoped_ptr_malloc<
  42     PK11SymKey, NSSDestroyer<PK11SymKey, PK11_FreeSymKey> > ScopedPK11SymKey;
  43 typedef scoped_ptr_malloc<
  44     SECKEYPublicKey, NSSDestroyer<SECKEYPublicKey, SECKEY_DestroyPublicKey> >
  45     ScopedSECKEYPublicKey;
  46 typedef scoped_ptr_malloc<
  47     SECKEYPrivateKey, NSSDestroyer<SECKEYPrivateKey, SECKEY_DestroyPrivateKey> >
  48     ScopedSECKEYPrivateKey;
  49 typedef scoped_ptr_malloc<
  50     SECAlgorithmID, NSSDestroyer1<SECAlgorithmID,
  51                                   SECOID_DestroyAlgorithmID,
  52                                   PR_TRUE> > ScopedSECAlgorithmID;
  53 typedef scoped_ptr_malloc<
  54     SECItem, NSSDestroyer1<SECItem,
  55                            SECITEM_FreeItem,
  56                            PR_TRUE> > ScopedSECItem;
  57 typedef scoped_ptr_malloc<
  58     PLArenaPool, NSSDestroyer1<PLArenaPool,
  59                                PORT_FreeArena,
  60                                PR_FALSE> > ScopedPLArenaPool;
  61
  62 }  // namespace crypto
  63
  64 #endif  // CRYPTO_SCOPED_NSS_TYPES_H_