1 files changed, 62 insertions, 0 deletions
diff --git a/internal/admin/api_entity_path_test.go b/internal/admin/api_entity_path_test.go
new file mode 100644
index 0000000..7abf65f
--- /dev/null
+++ b/internal/admin/api_entity_path_test.go
@@ -0,0 +1,62 @@
+package admin
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"thehouseoficarus/internal/config"
+	"thehouseoficarus/internal/player"
+)
+
+// TestEntityAPICannotEscapeData: entity create/rename IDs and directory
+// targets join into file paths, so a traversal ID ("../../x") must be
+// rejected instead of writing outside the data directory.
+func TestEntityAPICannotEscapeData(t *testing.T) {
+	root := t.TempDir()
+	dir := filepath.Join(root, "data")
+	for _, sub := range []string{"objects", "players/accounts"} {
+		if err := os.MkdirAll(filepath.Join(dir, sub), 0o700); err != nil {
+			t.Fatal(err)
+		}
+	}
+	accounts := player.NewAccountStore(dir)
+	if err := accounts.SaveAccount(&player.Account{Name: "auditor", Admin: true}); err != nil {
+		t.Fatal(err)
+	}
+	s, err := NewServer(config.Default(), false, accounts, nil, nil, nil, nil, dir,
+		nil, nil, nil, nil, filepath.Join(dir, "config.yaml"),
+		func(fn func()) bool { fn(); return true })
+	if err != nil {
+		t.Fatal(err)
+	}
+	cookieRec := httptest.NewRecorder()
+	s.setAuthCookie(cookieRec, "auditor")
+	cookie := cookieRec.Result().Cookies()[0]
+
+	post := func(path, body string) *httptest.ResponseRecorder {
+		req := httptest.NewRequest(http.MethodPost, path, strings.NewReader(body))
+		req.AddCookie(cookie)
+		rec := httptest.NewRecorder()
+		s.ServeHTTP(rec, req)
+		return rec
+	}
+
+	// Traversal entity ID via the structured create route.
+	if rec := post("/api/objects", `{"id":"../../outside","name":"Escaped object"}`); rec.Code != http.StatusBadRequest {
+		t.Fatalf("traversal object id: status %d body %s", rec.Code, rec.Body.String())
+	}
+	// Traversal new ID via the entity rename route: the rename handler
+	// must reject the request, not rename anything.
+	rec := post("/api/objects/rename", `{"id":"test","new_id":"../../outside"}`)
+	if !strings.Contains(rec.Body.String(), "error") {
+		t.Fatalf("traversal rename id not rejected: status %d body %s", rec.Code, rec.Body.String())
+	}
+	// Nothing may exist outside the data directory.
+	if _, err := os.Stat(filepath.Join(root, "outside.yaml")); !os.IsNotExist(err) {
+		t.Fatal("entity API escaped the data directory")
+	}
+}