Files
once-campfire/app/models/session.rb
T
Jeremy Daer 19319a1cff Refuse a session for a password that changed after it was checked
A password change ends every session, but a sign-in or sign-in link checked
against the old password just before the change could still save its session
just after, and that session outlived the change.

The session now checks, as it's saved, that the user's password is still the
one the request loaded. The save's transaction holds SQLite's write lock from
the start, so a change commits either before the check, which fails it, or
after the insert, and ends this session with the others. Sessions start
through the user's association so the check sees the user that was
authenticated, and a refused sign-in is answered like a wrong password.
2026-10-20 08:37:07 -07:00

29 lines
989 B
Ruby

class Session < ApplicationRecord
ACTIVITY_REFRESH_RATE = 1.hour
has_secure_token
belongs_to :user
before_create { self.last_active_at ||= Time.now }
validate :user_password_unchanged, on: :create
def resume(user_agent:, ip_address:)
if last_active_at.before?(ACTIVITY_REFRESH_RATE.ago)
update! user_agent: user_agent, ip_address: ip_address, last_active_at: Time.now
end
end
private
# A password change ends every session, so one can't start on a password checked before the change. Validated in
# the save's transaction, which holds the database's write lock from the start, so a change commits either before
# this check, and fails it, or after the insert, and ends this session with the others. Compared here rather than in
# the query, which logs its values.
def user_password_unchanged
unless User.where(id: user_id).pick(:password_digest) == user.password_digest
errors.add :user, :invalid
end
end
end