fix: harden engine across casino, economy, concurrency, security, and content

1 files changed, 19 insertions, 1 deletions

diff --git a/internal/game/core_admin.go b/internal/game/core_admin.go
index e1236ab..848130f 100644
--- a/internal/game/core_admin.go
+++ b/internal/game/core_admin.go
@@ -2,6 +2,24 @@ package game
 
 import "thehouseoficarus/internal/net"
 
+// checkAdmin reports whether the session belongs to an account with the
+// on-disk admin flag set. The cached sess.Account copy is only refreshed on
+// login or account republish, so it is NOT trusted as the source of truth:
+// removing admin: true from an account file (or the admin API's reload) must
+// demote an already-connected admin without requiring a relog. The account
+// file is re-read on the owner goroutine, which serializes with logins and
+// account saves, so the check cannot race a concurrent hash/admin change.
+// Privilege checks fail closed when the account cannot be read.
 func (g *Game) checkAdmin(sess *net.Session) bool {
-	return sess.Account != nil && sess.Account.Admin
+	if sess.Account == nil {
+		return false
+	}
+	acc, err := g.AccountStore.LoadAccount(sess.Account.Name)
+	if err != nil || !acc.Admin {
+		// Drop the stale cached privilege too, so command gating and any
+		// code reading sess.Account.Admin agree with disk.
+		sess.Account.Admin = false
+		return false
+	}
+	return true
 }