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about-signin-internals

Overview

The “chrome://signin-internals” webpage is a special URL in chromium that displays a summary of all signin and authentication related information in Google Chrome. It is useful in the triage and pinpointing of errors that could potentially be authentication related.

Summary

Information Displayed

  • Chrome Version - The version, branch and channel of chrome

  • Signin Status - Whether the user is signed in or not

  • User Id - The id for the currently signed in user or none if not signed in.

  • Sid/Lsid - The hash of the SID/LSID for this session.


Last Signin Details

Information Displayed

  • Type - Is this a credential or a cookie jar/OAuth based login

  • Time - The time stamp of the most recent login

  • Last OnClientLogin Status/Time - The status and timestamp of the last credential based login attempt. ‘Successful’ if everything went right, an error message if something went wrong.

  • Last OnOAuthLogin Status/Time - The status and timestamp of the last OAuth based login attempt. ‘Successful’ if everything went right, an error message if something went wrong.

  • Last OnGetUserInfo Status/Time - The status and timestamp of the last attempt to fetch information about the currently authenticated user on a successful login. The user info is fetched immediately after a Client or OAuth login, so the timestamp should be close to one of the preceding values.

Room for improvement

  • Add ChromeOS specific information (Retail login, etc).

Token Details

For each service, displays the hash of the current token (or 0 if we don’t have a token), the time stamp of the last token fetch attempt, and the status of the last token fetch attempt. Currently the following services are tracked.

Services managed by TokenService

  • chromiumsync
  • gaia
  • lso
  • mobilesync
  • oauth2LoginAccessToken
  • oauth2LoginRefreshToken

Services using OAuth2AccessTokenConsumer

  • AppNotifyChannelSetup
  • ChromeToMobile
  • OperationsBase
  • ProfileDownloader
  • UserCloudPolicyManager

Room for improvement

  • Once OAuth2AccessTokenConsumers are migrated to use OAuth2TokenService, centralize signin-internals notifications from those services similar to how TokenService behaves now.
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