components/os_crypt/keychain_password_mac.h

   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_