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<PK11Context,
  35                    NSSDestroyer1<PK11Context, PK11_DestroyContext, PR_TRUE> >
  36     ScopedPK11Context;
  37 typedef scoped_ptr<PK11SlotInfo, NSSDestroyer<PK11SlotInfo, PK11_FreeSlot> >
  38     ScopedPK11Slot;
  39 typedef scoped_ptr<PK11SlotList, NSSDestroyer<PK11SlotList, PK11_FreeSlotList> >
  40     ScopedPK11SlotList;
  41 typedef scoped_ptr<PK11SymKey, NSSDestroyer<PK11SymKey, PK11_FreeSymKey> >
  42     ScopedPK11SymKey;
  43 typedef scoped_ptr<SECKEYPublicKey,
  44                    NSSDestroyer<SECKEYPublicKey, SECKEY_DestroyPublicKey> >
  45     ScopedSECKEYPublicKey;
  46 typedef scoped_ptr<SECKEYPrivateKey,
  47                    NSSDestroyer<SECKEYPrivateKey, SECKEY_DestroyPrivateKey> >
  48     ScopedSECKEYPrivateKey;
  49 typedef scoped_ptr<SECAlgorithmID,
  50                    NSSDestroyer1<SECAlgorithmID, SECOID_DestroyAlgorithmID,
  51                                  PR_TRUE> >
  52     ScopedSECAlgorithmID;
  53 typedef scoped_ptr<SECItem, NSSDestroyer1<SECItem, SECITEM_FreeItem, PR_TRUE> >
  54     ScopedSECItem;
  55 typedef scoped_ptr<PLArenaPool,
  56                    NSSDestroyer1<PLArenaPool, PORT_FreeArena, PR_FALSE> >
  57     ScopedPLArenaPool;
  58
  59 }  // namespace crypto
  60
  61 #endif  // CRYPTO_SCOPED_NSS_TYPES_H_