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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CRYPTO_KEYCHAIN_MAC_H_
#define CRYPTO_KEYCHAIN_MAC_H_

#include <Security/Security.h>

#include "base/basictypes.h"
#include "crypto/crypto_export.h"

#if defined (OS_IOS)
typedef void* SecKeychainRef;
typedef void* SecKeychainItemRef;
typedef void SecKeychainAttributeList;
#endif

namespace crypto {

// Wraps the KeychainServices API in a very thin layer, to allow it to be
// mocked out for testing.

// See Keychain Services documentation for function documentation, as these call
// through directly to their Keychain Services equivalents (Foo ->
// SecKeychainFoo). The only exception is Free, which should be used for
// anything returned from this class that would normally be freed with
// CFRelease (to aid in testing).
class CRYPTO_EXPORT AppleKeychain {
 public:
  AppleKeychain();
  virtual ~AppleKeychain();

  virtual OSStatus FindGenericPassword(CFTypeRef keychainOrArray,
                                       UInt32 serviceNameLength,
                                       const char* serviceName,
                                       UInt32 accountNameLength,
                                       const char* accountName,
                                       UInt32* passwordLength,
                                       void** passwordData,
                                       SecKeychainItemRef* itemRef) const;

  virtual OSStatus ItemFreeContent(SecKeychainAttributeList* attrList,
                                   void* data) const;

  virtual OSStatus AddGenericPassword(SecKeychainRef keychain,
                                      UInt32 serviceNameLength,
                                      const char* serviceName,
                                      UInt32 accountNameLength,
                                      const char* accountName,
                                      UInt32 passwordLength,
                                      const void* passwordData,
                                      SecKeychainItemRef* itemRef) const;

#if !defined(OS_IOS)
  virtual OSStatus ItemCopyAttributesAndData(
      SecKeychainItemRef itemRef,
      SecKeychainAttributeInfo* info,
      SecItemClass* itemClass,
      SecKeychainAttributeList** attrList,
      UInt32* length,
      void** outData) const;

  virtual OSStatus ItemModifyAttributesAndData(
      SecKeychainItemRef itemRef,
      const SecKeychainAttributeList* attrList,
      UInt32 length,
      const void* data) const;

  virtual OSStatus ItemFreeAttributesAndData(SecKeychainAttributeList* attrList,
                                             void* data) const;

  virtual OSStatus ItemDelete(SecKeychainItemRef itemRef) const;

  virtual OSStatus SearchCreateFromAttributes(
      CFTypeRef keychainOrArray,
      SecItemClass itemClass,
      const SecKeychainAttributeList* attrList,
      SecKeychainSearchRef* searchRef) const;

  virtual OSStatus SearchCopyNext(SecKeychainSearchRef searchRef,
                                  SecKeychainItemRef* itemRef) const;

  virtual OSStatus AddInternetPassword(SecKeychainRef keychain,
                                       UInt32 serverNameLength,
                                       const char* serverName,
                                       UInt32 securityDomainLength,
                                       const char* securityDomain,
                                       UInt32 accountNameLength,
                                       const char* accountName,
                                       UInt32 pathLength, const char* path,
                                       UInt16 port, SecProtocolType protocol,
                                       SecAuthenticationType authenticationType,
                                       UInt32 passwordLength,
                                       const void* passwordData,
                                       SecKeychainItemRef* itemRef) const;

  // Calls CFRelease on the given ref, after checking that |ref| is non-NULL.
  virtual void Free(CFTypeRef ref) const;
#endif  // !defined(OS_IOS)

 private:
  DISALLOW_COPY_AND_ASSIGN(AppleKeychain);
};

}  // namespace crypto

#endif  // CRYPTO_KEYCHAIN_MAC_H_