HyperAdmin

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Revision as of 16:41, 8 August 2005 by Woozle (talk | contribs) (set user/pass cookie)
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Woozle: HyperAdmin

This is my attempt to create a general user administration system for use by other web-based applications (mostly mine) which might need one.

Login Sequence

Major phases

  1. check what came in (form/cookies); set flags
  2. inspect the database; set flags
  3. set cookies and show html

Flow chart

  • Phase I: check what came in
    1. Get user form input (user, pass, possibly extra pass & email)
    2. If no user given:
      • check cookies for user/pass combination:
        • If user/pass found in cookies, set $is_revisit flag
        • If no user/pass found in cookies:
          • set $do_login_screen flag
          • set login message to "Please log in"
    3. ...else (user given):
      • If password also given
        • If 2nd password given:
          • If 2 passwords match set $do_create_user flag
          • If 2 passwords don't match:
            • set $do_login_screen flag
            • set login message to "passwords don't match"
          • ...else (no 2nd password):
            • set $do_login_attempt flag
  • Phase II: check database
    1. Open database and inspect "users" table.
    2. If no users yet:
      • If $do_create_user:
        • Add user to database
        • Give user "god" permissions
        • Set $login_ok flag
      • ...else (not $do_create_user):
        • Set login message to "you are the first user; please create a new account"
    3. ...else if users found:
      • If $do_login_attempt:
        • Lookup encrypted password for given user
        • If encryption of new password matches
          • set $login_ok flag
          • if previous login was successful (check timestamps), set login attempts to zero
        • ...else (password mismatch):
          • increment login attempts for this user
      • ...else (not $do_login_attempt):
        • If $new_pass_valid:
          • Create new account
          • Set $login_ok flag
        • ...else (not $new_pass_valid):
          • set $do_login_screen flag
          • set login message to "invalid user/password"
          • if $is_revisit, log a HACK WARNING
  • Phase III: set cookies and show html
    1. if $do_login_screen:
      • Show login screen, login message, and # of login attempts for this user
    2. ...else if $login_ok
      • Set user/pass cookie
      • Show control bar, with appropriate applications enabled and user info:
        • Time of last successful login
        • Time of last unsuccessful login
        • Number of failed login attempts

Possible bugs:

  • Can $do_login_screen and $login_ok both end up false? In this case, nothing would be displayed.
  • Can $do_login_screen and $login_ok both end up true? Is the resulting behavior appropriate?

Tables

  • "K" indicates Primary Key fields
  • "#" indicates autonumbered fields

Main data tables

  • users -- users with access to the admin system
#K ID int(4)
Name varchar(32)
Pass text
Email varchar(128) email address for password confirmation and such
WhenGood timestamp when user last logged in
WhenBad timestamp when user last attempted to log in but failed (bad password)
QtyFails int(4) number of failed login attempts since last success
  • groups -- each group has a role to play, and each role requires a particular set of privileges
#K ID int(4)
Name varchar(32)
Descr text text describing the purpose of this group
  • privs -- particular privileges; meaning is defined in code
#K ID int(4)
Name varchar(32)
Descr text text describing this permission

Collection/link tables

  • users_x_groups -- users in each group / groups to which each user belongs
K ID_User int(4) users.ID
K ID_Group int(4) groups.ID
  • groups_x_privs -- privileges each group has / groups having a particular privilege
K ID_Group int(4) groups.ID
K ID_Priv int(4) privs.ID

Logging tables

  • log -- logs of login attempts as well as what users did while logged in
K# ID int(4)
ID_User int(4) users.ID - which user, if any (NULL = unknown user)
ID_Session int(4) sessions.ID - more information in case user is unknown
When timestamp when this action was taken
Seq int(4) Order in which actions were executed, if done at the same time
Descr text description of action taken (should be very specific)