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      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     Destroyer(ptr);
     21   }
     22 };
     23 
     24 template <typename Type, void (*Destroyer)(Type*, PRBool), PRBool freeit>
     25 struct NSSDestroyer1 {
     26   void operator()(Type* ptr) const {
     27     Destroyer(ptr, freeit);
     28   }
     29 };
     30 
     31 // Define some convenient scopers around NSS pointers.
     32 typedef scoped_ptr<PK11Context,
     33                    NSSDestroyer1<PK11Context, PK11_DestroyContext, PR_TRUE> >
     34     ScopedPK11Context;
     35 typedef scoped_ptr<PK11SlotInfo, NSSDestroyer<PK11SlotInfo, PK11_FreeSlot> >
     36     ScopedPK11Slot;
     37 typedef scoped_ptr<PK11SlotList, NSSDestroyer<PK11SlotList, PK11_FreeSlotList> >
     38     ScopedPK11SlotList;
     39 typedef scoped_ptr<PK11SymKey, NSSDestroyer<PK11SymKey, PK11_FreeSymKey> >
     40     ScopedPK11SymKey;
     41 typedef scoped_ptr<SECKEYPublicKey,
     42                    NSSDestroyer<SECKEYPublicKey, SECKEY_DestroyPublicKey> >
     43     ScopedSECKEYPublicKey;
     44 typedef scoped_ptr<SECKEYPrivateKey,
     45                    NSSDestroyer<SECKEYPrivateKey, SECKEY_DestroyPrivateKey> >
     46     ScopedSECKEYPrivateKey;
     47 typedef scoped_ptr<SECAlgorithmID,
     48                    NSSDestroyer1<SECAlgorithmID, SECOID_DestroyAlgorithmID,
     49                                  PR_TRUE> >
     50     ScopedSECAlgorithmID;
     51 typedef scoped_ptr<SECItem, NSSDestroyer1<SECItem, SECITEM_FreeItem, PR_TRUE> >
     52     ScopedSECItem;
     53 typedef scoped_ptr<PLArenaPool,
     54                    NSSDestroyer1<PLArenaPool, PORT_FreeArena, PR_FALSE> >
     55     ScopedPLArenaPool;
     56 
     57 }  // namespace crypto
     58 
     59 #endif  // CRYPTO_SCOPED_NSS_TYPES_H_
     60