components/signin/core/browser/signin_internals_util.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_SIGNIN_CORE_BROWSER_SIGNIN_INTERNALS_UTIL_H_
   6 #define COMPONENTS_SIGNIN_CORE_BROWSER_SIGNIN_INTERNALS_UTIL_H_
   7
   8 #include <map>
   9 #include <string>
  10
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/values.h"
  13
  14 namespace signin_internals_util {
  15
  16 // Preference prefixes for signin and token values.
  17 extern const char kSigninPrefPrefix[];
  18 extern const char kTokenPrefPrefix[];
  19
  20 // The length of strings returned by GetTruncatedHash() below.
  21 const size_t kTruncateTokenStringLength = 6;
  22
  23 // Helper enums to access fields from SigninStatus (declared below).
  24 enum {
  25   SIGNIN_FIELDS_BEGIN = 0,
  26   UNTIMED_FIELDS_BEGIN = SIGNIN_FIELDS_BEGIN
  27 };
  28
  29 enum UntimedSigninStatusField {
  30   USERNAME = UNTIMED_FIELDS_BEGIN,
  31   UNTIMED_FIELDS_END
  32 };
  33
  34 enum {
  35   UNTIMED_FIELDS_COUNT = UNTIMED_FIELDS_END - UNTIMED_FIELDS_BEGIN,
  36   TIMED_FIELDS_BEGIN = UNTIMED_FIELDS_END
  37 };
  38
  39 enum TimedSigninStatusField {
  40   SIGNIN_TYPE = TIMED_FIELDS_BEGIN,
  41   CLIENT_LOGIN_STATUS,
  42   OAUTH_LOGIN_STATUS,
  43   GET_USER_INFO_STATUS,
  44   UBER_TOKEN_STATUS,
  45   MERGE_SESSION_STATUS,
  46   TIMED_FIELDS_END
  47 };
  48
  49 enum {
  50   TIMED_FIELDS_COUNT = TIMED_FIELDS_END - TIMED_FIELDS_BEGIN,
  51   SIGNIN_FIELDS_END = TIMED_FIELDS_END,
  52   SIGNIN_FIELDS_COUNT = SIGNIN_FIELDS_END - SIGNIN_FIELDS_BEGIN
  53 };
  54
  55 // Returns the root preference path for the service. The path should be
  56 // qualified with one of .value, .status or .time to get the respective
  57 // full preference path names.
  58 std::string TokenPrefPath(const std::string& service_name);
  59
  60 // Returns the name of a SigninStatus field.
  61 std::string SigninStatusFieldToString(UntimedSigninStatusField field);
  62 std::string SigninStatusFieldToString(TimedSigninStatusField field);
  63
  64 // An Observer class for authentication and token diagnostic information.
  65 class SigninDiagnosticsObserver {
  66  public:
  67   // Credentials and signin related changes.
  68   virtual void NotifySigninValueChanged(const UntimedSigninStatusField& field,
  69                                         const std::string& value) {}
  70   virtual void NotifySigninValueChanged(const TimedSigninStatusField& field,
  71                                         const std::string& value) {}
  72   // OAuth tokens related changes.
  73   virtual void NotifyTokenReceivedSuccess(const std::string& token_name,
  74                                           const std::string& token,
  75                                           bool update_time) {}
  76   virtual void NotifyTokenReceivedFailure(const std::string& token_name,
  77                                           const std::string& error) {}
  78   virtual void NotifyClearStoredToken(const std::string& token_name) {}};
  79
  80 // Gets the first 6 hex characters of the SHA256 hash of the passed in string.
  81 // These are enough to perform equality checks across a single users tokens,
  82 // while preventing outsiders from reverse-engineering the actual token from
  83 // the displayed value.
  84 // Note that for readability (in about:signin-internals), an empty string
  85 // is not hashed, but simply returned as an empty string.
  86 std::string GetTruncatedHash(const std::string& str);
  87
  88 } // namespace signin_internals_util
  89
  90 #endif  // COMPONENTS_SIGNIN_CORE_BROWSER_SIGNIN_INTERNALS_UTIL_H_