Initial commit of sync engine code to browser/sync....

chrome/browser/sync/util/user_settings.h

+// Copyright (c) 2006-2008 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 CHROME_BROWSER_SYNC_UTIL_USER_SETTINGS_H_
+#define CHROME_BROWSER_SYNC_UTIL_USER_SETTINGS_H_
+
+#include <map>
+#include <set>
+#include <string>
+
+#include "chrome/browser/sync/util/pthread_helpers.h"
+#include "chrome/browser/sync/util/signin.h"
+#include "chrome/browser/sync/util/sync_types.h"
+
+extern "C" struct sqlite3;
+
+namespace browser_sync {
+
+class URLFactory;
+
+class UserSettings {
+ public:
+  // db_path is used for the main user settings.
+  // passwords_file contains hashes of passwords.
+  UserSettings();
+  ~UserSettings();
+  // Returns false (failure) if the db is a newer version.
+  bool Init(const PathString& settings_path);
+  void StoreHashedPassword(const std::string& email,
+                           const std::string& password);
+  bool VerifyAgainstStoredHash(const std::string& email,
+                               const std::string& password);
+
+  // Set the username.
+  void SwitchUser(const std::string& email);
+
+  // Saves the email address and the named service token for the given user.
+  // Call this multiple times with the same email parameter to save
+  // multiple service tokens.
+  void SetAuthTokenForService(const std::string& email,
+                              const std::string& service_name,
+                              const std::string& long_lived_service_token);
+  // Erases all saved service tokens.
+  void ClearAllServiceTokens();
+
+  // Returns the user name whose credentials have been persisted.
+  bool GetLastUser(std::string* username);
+
+  // Returns the user name whose credentials have been persisted as well as
+  // a service token for the named service
+  bool GetLastUserAndServiceToken(const std::string& service_name,
+                                  std::string* username,
+                                  std::string* service_token);
+
+  void RememberSigninType(const std::string& signin, SignIn signin_type);
+  SignIn RecallSigninType(const std::string& signin, SignIn default_type);
+
+  void RemoveAllGuestSettings();
+
+  void RemoveShare(const PathString& share_path);
+
+  void StoreEmailForSignin(const std::string& signin,
+                           const std::string& primary_email);
+
+  // Multiple email addresses can map to the same Google Account.  This method
+  // returns the primary Google Account email associated with |signin|, which
+  // is used as both input and output.
+  bool GetEmailForSignin(std::string* signin);
+
+
+  std::string email() const;
+
+  // Get a unique ID suitable for use as the client ID.  This ID
+  // has the lifetime of the user settings database.  You may use this ID if
+  // your operating environment does not provide its own unique client ID.
+  std::string GetClientId();
+
+ protected:
+  struct ScopedDBHandle {
+    ScopedDBHandle(UserSettings* settings);
+    inline sqlite3* get() const { return *handle_; }
+    PThreadScopedLock<PThreadMutex> mutex_lock_;
+    sqlite3** const handle_;
+  };
+
+  friend struct ScopedDBHandle;
+  friend class URLFactory;
+
+  void MigrateOldVersionsAsNeeded(sqlite3* const handle, int current_version);
+
+ private:
+  std::string email_;
+  mutable PThreadMutex mutex_;  // protects email_
+  typedef PThreadScopedLock<PThreadMutex> ScopedLock;
+
+  // We keep a single dbhandle.
+  sqlite3* dbhandle_;
+  PThreadMutex dbhandle_mutex_;
+
+  // TODO(sync): Use in-memory cache for service auth tokens on posix.
+  // Have someone competent in Windows switch it over to not use Sqlite in the
+  // future.
+#ifndef OS_WINDOWS
+  typedef std::map<std::string, std::string> ServiceTokenMap;
+  ServiceTokenMap service_tokens_;
+#endif  // OS_WINDOWS
+
+  DISALLOW_COPY_AND_ASSIGN(UserSettings);
+};
+
+}  // namespace browser_sync
+
+#endif  // CHROME_BROWSER_SYNC_UTIL_USER_SETTINGS_H_