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      1 // Copyright 2014 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 COMPONENTS_OS_CRYPT_KEYCHAIN_PASSWORD_MAC_H_
      6 #define COMPONENTS_OS_CRYPT_KEYCHAIN_PASSWORD_MAC_H_
      7 
      8 #include <string>
      9 
     10 #include "base/macros.h"
     11 
     12 namespace crypto {
     13 class AppleKeychain;
     14 }
     15 
     16 class KeychainPassword {
     17  public:
     18   explicit KeychainPassword(const crypto::AppleKeychain& keychain)
     19       : keychain_(keychain) {
     20   }
     21 
     22   // Get the OSCrypt password for this system.  If no password exists
     23   // in the Keychain then one is generated, stored in the Mac keychain, and
     24   // returned.
     25   // If one exists then it is fetched from the Keychain and returned.
     26   // If the user disallows access to the Keychain (or an error occurs) then an
     27   // empty string is returned.
     28   std::string GetPassword() const;
     29 
     30  private:
     31   const crypto::AppleKeychain& keychain_;
     32 
     33   DISALLOW_COPY_AND_ASSIGN(KeychainPassword);
     34 };
     35 
     36 #endif  // COMPONENTS_OS_CRYPT_KEYCHAIN_PASSWORD_MAC_H_
     37