crypto/scoped_nss_types.h

   1 // Copyright (c) 2012 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
   8 #include <keyhi.h>
   9 #include <nss.h>
  10 #include <pk11pub.h>
  11 #include <plarena.h>
  12
  13 #include "base/memory/scoped_ptr.h"
  14
  15 namespace crypto {
  16
  17 template <typename Type, void (*Destroyer)(Type*)>
  18 struct NSSDestroyer {
  19   void operator()(Type* ptr) const {
  20     if (ptr)
  21       Destroyer(ptr);
  22   }
  23 };
  24
  25 template <typename Type, void (*Destroyer)(Type*, PRBool), PRBool freeit>
  26 struct NSSDestroyer1 {
  27   void operator()(Type* ptr) const {
  28     if (ptr)
  29       Destroyer(ptr, freeit);
  30   }
  31 };
  32
  33 // Define some convenient scopers around NSS pointers.
  34 typedef scoped_ptr_malloc<
  35     PK11Context, NSSDestroyer1<PK11Context,
  36                                PK11_DestroyContext,
  37                                PR_TRUE> > ScopedPK11Context;
  38 typedef scoped_ptr_malloc<
  39     PK11SlotInfo, NSSDestroyer<PK11SlotInfo, PK11_FreeSlot> > ScopedPK11Slot;
  40 typedef scoped_ptr_malloc<
  41     PK11SlotList, NSSDestroyer<PK11SlotList,
  42                                PK11_FreeSlotList> > ScopedPK11SlotList;
  43 typedef scoped_ptr_malloc<
  44     PK11SymKey, NSSDestroyer<PK11SymKey, PK11_FreeSymKey> > ScopedPK11SymKey;
  45 typedef scoped_ptr_malloc<
  46     SECKEYPublicKey, NSSDestroyer<SECKEYPublicKey, SECKEY_DestroyPublicKey> >
  47     ScopedSECKEYPublicKey;
  48 typedef scoped_ptr_malloc<
  49     SECKEYPrivateKey, NSSDestroyer<SECKEYPrivateKey, SECKEY_DestroyPrivateKey> >
  50     ScopedSECKEYPrivateKey;
  51 typedef scoped_ptr_malloc<
  52     SECAlgorithmID, NSSDestroyer1<SECAlgorithmID,
  53                                   SECOID_DestroyAlgorithmID,
  54                                   PR_TRUE> > ScopedSECAlgorithmID;
  55 typedef scoped_ptr_malloc<
  56     SECItem, NSSDestroyer1<SECItem,
  57                            SECITEM_FreeItem,
  58                            PR_TRUE> > ScopedSECItem;
  59 typedef scoped_ptr_malloc<
  60     PLArenaPool, NSSDestroyer1<PLArenaPool,
  61                                PORT_FreeArena,
  62                                PR_FALSE> > ScopedPLArenaPool;
  63
  64 }  // namespace crypto
  65
  66 #endif  // CRYPTO_SCOPED_NSS_TYPES_H_