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     PK11SymKey, NSSDestroyer<PK11SymKey, PK11_FreeSymKey> > ScopedPK11SymKey;
  42 typedef scoped_ptr_malloc<
  43     SECKEYPublicKey, NSSDestroyer<SECKEYPublicKey, SECKEY_DestroyPublicKey> >
  44     ScopedSECKEYPublicKey;
  45 typedef scoped_ptr_malloc<
  46     SECKEYPrivateKey, NSSDestroyer<SECKEYPrivateKey, SECKEY_DestroyPrivateKey> >
  47     ScopedSECKEYPrivateKey;
  48 typedef scoped_ptr_malloc<
  49     SECAlgorithmID, NSSDestroyer1<SECAlgorithmID,
  50                                   SECOID_DestroyAlgorithmID,
  51                                   PR_TRUE> > ScopedSECAlgorithmID;
  52 typedef scoped_ptr_malloc<
  53     SECItem, NSSDestroyer1<SECItem,
  54                            SECITEM_FreeItem,
  55                            PR_TRUE> > ScopedSECItem;
  56 typedef scoped_ptr_malloc<
  57     PLArenaPool, NSSDestroyer1<PLArenaPool,
  58                                PORT_FreeArena,
  59                                PR_FALSE> > ScopedPLArenaPool;
  60
  61 }  // namespace crypto
  62
  63 #endif  // CRYPTO_SCOPED_NSS_TYPES_H_