Add a regenerate button to regenerate the password in Windows.

rlz/lib/rlz_value_store.h

-// 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 RLZ_VALUE_STORE_H_
-#define RLZ_VALUE_STORE_H_
-
-#include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-#include "rlz/lib/rlz_enums.h"
-
-#if defined(OS_WIN)
-#include "rlz/win/lib/lib_mutex.h"
-#endif
-
-#if defined(OS_MACOSX)
-#include "base/mac/scoped_nsautorelease_pool.h"
-#endif
-
-
-#include <string>
-#include <vector>
-
-class FilePath;
-
-namespace rlz_lib {
-
-// Abstracts away rlz's key value store. On windows, this usually writes to
-// the registry. On mac, it writes to an NSDefaults object.
-class RlzValueStore {
- public:
-  virtual ~RlzValueStore() {}
-
-  enum AccessType { kReadAccess, kWriteAccess };
-  virtual bool HasAccess(AccessType type) = 0;
-
-  // Ping times.
-  virtual bool WritePingTime(Product product, int64 time) = 0;
-  virtual bool ReadPingTime(Product product, int64* time) = 0;
-  virtual bool ClearPingTime(Product product) = 0;
-
-  // Access point RLZs.
-  virtual bool WriteAccessPointRlz(AccessPoint access_point,
-                                   const char* new_rlz) = 0;
-  virtual bool ReadAccessPointRlz(AccessPoint access_point,
-                                  char* rlz,  // At most kMaxRlzLength + 1 bytes
-                                  size_t rlz_size) = 0;
-  virtual bool ClearAccessPointRlz(AccessPoint access_point) = 0;
-
-  // Product events.
-  // Stores |event_rlz| for product |product| as product event.
-  virtual bool AddProductEvent(Product product, const char* event_rlz) = 0;
-  // Appends all events for |product| to |events|, in arbirtrary order.
-  virtual bool ReadProductEvents(Product product,
-                                 std::vector<std::string>* events) = 0;
-  // Removes the stored event |event_rlz| for |product| if it exists.
-  virtual bool ClearProductEvent(Product product, const char* event_rlz) = 0;
-  // Removes all stored product events for |product|.
-  virtual bool ClearAllProductEvents(Product product) = 0;
-
-  // Stateful events.
-  // Stores |event_rlz| for product |product| as stateful event.
-  virtual bool AddStatefulEvent(Product product, const char* event_rlz) = 0;
-  // Checks if |event_rlz| has been stored as stateful event for |product|.
-  virtual bool IsStatefulEvent(Product product, const char* event_rlz) = 0;
-  // Removes all stored stateful events for |product|.
-  virtual bool ClearAllStatefulEvents(Product product) = 0;
-
-  // Tells the value store to clean up unimportant internal data structures, for
-  // example empty registry folders, that might remain after clearing other
-  // data. Best-effort.
-  virtual void CollectGarbage() = 0;
-};
-
-// All methods of RlzValueStore must stays consistent even when accessed from
-// multiple threads in multiple processes. To enforce this through the type
-// system, the only way to access the RlzValueStore is through a
-// ScopedRlzValueStoreLock, which is a cross-process lock. It is active while
-// it is in scope. If the class fails to acquire a lock, its GetStore() method
-// returns NULL. If the lock fails to be acquired, it must not be taken
-// recursively. That is, all user code should look like this:
-//   ScopedRlzValueStoreLock lock;
-//   RlzValueStore* store = lock.GetStore();
-//   if (!store)
-//     return some_error_code;
-//   ...
-class ScopedRlzValueStoreLock {
- public:
-  ScopedRlzValueStoreLock();
-  ~ScopedRlzValueStoreLock();
-
-  // Returns a RlzValueStore protected by a cross-process lock, or NULL if the
-  // lock can't be obtained. The lifetime of the returned object is limited to
-  // the lifetime of this ScopedRlzValueStoreLock object.
-  RlzValueStore* GetStore();
-
- private:
-  scoped_ptr<RlzValueStore> store_;
-#if defined(OS_WIN)
-  LibMutex lock_;
-#else
-  base::mac::ScopedNSAutoreleasePool autorelease_pool_;
-#endif
-};
-
-#if defined(OS_MACOSX)
-namespace testing {
-// Prefix |directory| to the path where the RLZ data file lives, for tests.
-void SetRlzStoreDirectory(const FilePath& directory);
-}  // namespace testing
-#endif  // defined(OS_MACOSX)
-
-
-}  // namespace rlz_lib
-
-#endif  // RLZ_VALUE_STORE_H_