1// Copyright (c) 2010 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 CHROME_BROWSER_SYNC_UTIL_USER_SETTINGS_H_
6#define CHROME_BROWSER_SYNC_UTIL_USER_SETTINGS_H_
7#pragma once
8
9#include <map>
10#include <string>
11
12#include "base/synchronization/lock.h"
13#include "build/build_config.h"
14
15extern "C" struct sqlite3;
16
17class FilePath;
18
19namespace browser_sync {
20
21void ExecOrDie(sqlite3* dbhandle, const char *query);
22std::string APEncode(const std::string& in);
23std::string APDecode(const std::string& in);
24
25class URLFactory;
26
27class UserSettings {
28 public:
29  // db_path is used for the main user settings.
30  // passwords_file contains hashes of passwords.
31  UserSettings();
32  ~UserSettings();
33  // Returns false (failure) if the db is a newer version.
34  bool Init(const FilePath& settings_path);
35  void StoreHashedPassword(const std::string& email,
36                           const std::string& password);
37  bool VerifyAgainstStoredHash(const std::string& email,
38                               const std::string& password);
39
40  // Set the username.
41  void SwitchUser(const std::string& email);
42
43  // Saves the email address and the named service token for the given user.
44  // Call this multiple times with the same email parameter to save multiple
45  // service tokens.
46  void SetAuthTokenForService(const std::string& email,
47                              const std::string& service_name,
48                              const std::string& long_lived_service_token);
49  // Erases all saved service tokens.
50  void ClearAllServiceTokens();
51
52  // Returns the user name whose credentials have been persisted.
53  bool GetLastUser(std::string* username);
54
55  // Returns the user name whose credentials have been persisted as well as a
56  // service token for the named service
57  bool GetLastUserAndServiceToken(const std::string& service_name,
58                                  std::string* username,
59                                  std::string* service_token);
60
61  void RemoveAllGuestSettings();
62
63  void StoreEmailForSignin(const std::string& signin,
64                           const std::string& primary_email);
65
66  // Multiple email addresses can map to the same Google Account.  This method
67  // returns the primary Google Account email associated with |signin|, which
68  // is used as both input and output.
69  bool GetEmailForSignin(std::string* signin);
70
71  std::string email() const;
72
73  // Get a unique ID suitable for use as the client ID.  This ID has the
74  // lifetime of the user settings database.  You may use this ID if your
75  // operating environment does not provide its own unique client ID.
76  std::string GetClientId();
77
78 protected:
79  struct ScopedDBHandle {
80    explicit ScopedDBHandle(UserSettings* settings);
81    inline sqlite3* get() const { return *handle_; }
82    base::AutoLock mutex_lock_;
83    sqlite3** const handle_;
84  };
85
86  friend struct ScopedDBHandle;
87  friend class URLFactory;
88
89  void MigrateOldVersionsAsNeeded(sqlite3* const handle, int current_version);
90
91 private:
92  std::string email_;
93  mutable base::Lock mutex_;  // protects email_.
94
95  // We keep a single dbhandle.
96  sqlite3* dbhandle_;
97  base::Lock dbhandle_mutex_;
98
99  // TODO(sync): Use in-memory cache for service auth tokens on posix.
100  // Have someone competent in Windows switch it over to not use Sqlite in the
101  // future.
102#ifndef OS_WIN
103  typedef std::map<std::string, std::string> ServiceTokenMap;
104  ServiceTokenMap service_tokens_;
105#endif  // OS_WIN
106
107  DISALLOW_COPY_AND_ASSIGN(UserSettings);
108};
109
110}  // namespace browser_sync
111
112#endif  // CHROME_BROWSER_SYNC_UTIL_USER_SETTINGS_H_
113