server auth

apps/server/internal/httpserver/auth_context.go

@@ -0,0 +1,23 @@
+package httpserver
+
+import (
+	"context"
+	"net/http"
+
+	"github.com/tim/cairnquire/apps/server/internal/auth"
+)
+
+type authContextKey struct{}
+
+func withPrincipal(ctx context.Context, principal auth.Principal) context.Context {
+	return context.WithValue(ctx, authContextKey{}, principal)
+}
+
+func principalFromContext(ctx context.Context) (auth.Principal, bool) {
+	principal, ok := ctx.Value(authContextKey{}).(auth.Principal)
+	return principal, ok
+}
+
+func requirePrincipal(r *http.Request) (auth.Principal, bool) {
+	return principalFromContext(r.Context())
+}