Files
MealQuest/internal/auth/actor.go
T
dev_agentandClaude Opus 5.5 15cc3c5ce4
Independent review Codex gpt-6-sol high: APPROVED (0 findings)
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Add CSRF protection and GET /api/v1/me
RequireSession now stores the validated session in the request context
(auth.WithSession / auth.SessionFrom); auth.ActorFrom derives the actor
from it, so there is one context value.

Every /api/v1 request other than GET, HEAD and OPTIONS must carry
X-MealQuest-CSRF equal to the session's csrf_token (constant-time
compare), else 403 {"error":{"code":"csrf"}}. The check runs after
RequireSession, so unauthenticated requests still get 401. A session
with no token is a 500, never a match against a missing header.

GET /api/v1/me returns {name, email, household: {label: "Our kitchen"},
csrfToken} with Cache-Control: no-store.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-03 10:32:31 -04:00

46 lines
1.2 KiB
Go

package auth
import (
"context"
"slices"
)
// Actor is the signed-in household member a request acts for. Handlers
// record Actor.Subject as updated_by on edits.
type Actor struct {
Subject string
Email string
Name string
Groups []string
}
// Actor returns the household member s belongs to.
func (s Session) Actor() Actor {
return Actor{Subject: s.Subject, Email: s.Email, Name: s.Name, Groups: slices.Clone(s.Groups)}
}
type sessionKey struct{}
// WithSession returns a copy of ctx carrying s. The session middleware calls
// it for every authenticated request.
func WithSession(ctx context.Context, s Session) context.Context {
return context.WithValue(ctx, sessionKey{}, s)
}
// SessionFrom returns the session WithSession stored in ctx. ok is false when
// ctx has none, which behind the session middleware means a wiring bug.
func SessionFrom(ctx context.Context) (s Session, ok bool) {
s, ok = ctx.Value(sessionKey{}).(Session)
return s, ok
}
// ActorFrom returns the actor of the session WithSession stored in ctx. ok is
// false when ctx has none.
func ActorFrom(ctx context.Context) (actor Actor, ok bool) {
s, ok := SessionFrom(ctx)
if !ok {
return Actor{}, false
}
return s.Actor(), true
}