rework to lighten the main, refactor wrappers. Rehandle csrf and pull config items.

handlers/results.go

@@ -8,14 +8,16 @@ import (
 	"regexp"
 	"sort"
 	"strconv"
+
 	"synlotto-website/helpers"
+	"synlotto-website/middleware"
 	"synlotto-website/models"
 )
 
 func ResultsThunderball(db *sql.DB) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		ip, _, _ := net.SplitHostPort(r.RemoteAddr)
-		limiter := helpers.GetVisitorLimiter(ip)
+		limiter := middleware.GetVisitorLimiter(ip)
 
 		if !limiter.Allow() {
 			http.Error(w, "Rate limit exceeded", http.StatusTooManyRequests)

handlers/security/csrf.go

@@ -0,0 +1,26 @@
+package security
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/gorilla/csrf"
+)
+
+var CSRFMiddleware func(http.Handler) http.Handler
+
+func InitCSRFProtection(csrfKey []byte, isProduction bool) error {
+	if len(csrfKey) != 32 {
+		return fmt.Errorf("csrf key must be 32 bytes, got %d", len(csrfKey))
+	}
+
+	CSRFMiddleware = csrf.Protect(
+		csrfKey,
+		csrf.Secure(isProduction),
+		csrf.SameSite(csrf.SameSiteStrictMode),
+		csrf.Path("/"),
+		csrf.HttpOnly(true),
+	)
+
+	return nil
+}

handlers/security/session.go

@@ -0,0 +1,94 @@
+package security
+
+import (
+	"bytes"
+	"encoding/gob"
+	"fmt"
+	"net/http"
+	"os"
+	"time"
+
+	"github.com/gorilla/securecookie"
+	"github.com/gorilla/sessions"
+)
+
+var (
+	sessionStore *sessions.CookieStore
+	sessionName  string
+	authKey      []byte
+	encryptKey   []byte
+)
+
+func init() {
+	gob.Register(time.Time{})
+}
+
+func LoadSessionKeys(authPath, encryptionPath, name string, isProduction bool) error {
+	var err error
+	authKey, err = os.ReadFile(authPath)
+	if err != nil {
+		return fmt.Errorf("error loading auth key: %w", err)
+	}
+
+	encryptKey, err = os.ReadFile(encryptionPath)
+	if err != nil {
+		return fmt.Errorf("error loading encryption key: %w", err)
+	}
+
+	authKey = bytes.TrimSpace(authKey)
+	encryptKey = bytes.TrimSpace(encryptKey)
+
+	if len(authKey) != 32 || len(encryptKey) != 32 {
+		return fmt.Errorf("auth and encryption keys must be 32 bytes each")
+	}
+
+	sessionStore = sessions.NewCookieStore(authKey, encryptKey)
+	sessionStore.Options = &sessions.Options{
+		Path:     "/",
+		MaxAge:   86400 * 1,
+		HttpOnly: true,
+		Secure:   isProduction,
+		SameSite: http.SameSiteLaxMode,
+	}
+
+	sessionName = name
+	return nil
+}
+
+func GetSession(w http.ResponseWriter, r *http.Request) (*sessions.Session, error) {
+	return sessionStore.Get(r, sessionName)
+}
+
+func SecureCookie(w http.ResponseWriter, name, value string, isProduction bool) error {
+	s := securecookie.New(authKey, encryptKey)
+
+	encoded, err := s.Encode(name, value)
+	if err != nil {
+		return err
+	}
+
+	http.SetCookie(w, &http.Cookie{
+		Name:     name,
+		Value:    encoded,
+		Path:     "/",
+		HttpOnly: true,
+		Secure:   isProduction,
+		SameSite: http.SameSiteStrictMode,
+	})
+
+	return nil
+}
+
+func LoadKeyFromFile(path string) ([]byte, error) {
+	key, err := os.ReadFile(path)
+	if err != nil {
+		return nil, err
+	}
+	return bytes.TrimSpace(key), nil
+}
+
+func ZeroBytes(b []byte) {
+	for i := range b {
+		b[i] = 0
+	}
+}

main.go

@@ -3,17 +3,17 @@ package main
 import (
 	"log"
 	"net/http"
+
+	securityhandlers "synlotto-website/handlers/security"
+
 	"synlotto-website/bootstrap"
 	"synlotto-website/config"
 	"synlotto-website/handlers"
-	"synlotto-website/helpers"
 	"synlotto-website/logging"
 	"synlotto-website/middleware"
 	"synlotto-website/models"
 	"synlotto-website/routes"
 	"synlotto-website/storage"
-
-	"github.com/gorilla/csrf"
 )
 
 func main() {
@@ -27,11 +27,10 @@ func main() {
 	db := storage.InitDB("synlotto.db")
 	models.SetDB(db) // Should be in storage not models.
 
-	csrfMiddleware := csrf.Protect(
-		[]byte("abcdefghijklmnopqrstuvwx12345678"), // TodO: Make Global
-		csrf.Secure(true),
-		csrf.Path("/"),
-	)
+	err = securityhandlers.InitCSRFProtection([]byte(appState.Config.CSRF.CSRFKey), appState.Config.HttpServer.ProductionMode)
+	if err != nil {
+		logging.Error("Failed to init CSRF: %v", err)
+	}
 
 	mux := http.NewServeMux()
 	routes.SetupAdminRoutes(mux, db)
@@ -42,7 +41,8 @@ func main() {
 	mux.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir("static"))))
 	mux.HandleFunc("/", handlers.Home(db))
 
-	wrapped := helpers.RateLimit(csrfMiddleware(mux))
+	wrapped := securityhandlers.CSRFMiddleware(mux)
+	wrapped = middleware.RateLimit(wrapped)
 	wrapped = middleware.EnforceHTTPS(wrapped, appState.Config.HttpServer.ProductionMode)
 	wrapped = middleware.SecureHeaders(wrapped)
 	wrapped = middleware.Recover(wrapped)

middleware/ratelimit.go

@@ -1,4 +1,4 @@
-package helpers
+package middleware
 
 import (
 	"net"

storage/db.go

@@ -4,10 +4,15 @@ import (
 	"database/sql"
 	"log"
 
+	"synlotto-website/config"
+	"synlotto-website/logging"
+
 	_ "modernc.org/sqlite"
 )
 
 func InitDB(filepath string) *sql.DB {
+	var err error
+	cfg := config.Get()
 	db, err := sql.Open("sqlite", filepath)
 	if err != nil {
 		log.Fatal("❌ Failed to open DB:", err)
@@ -30,6 +35,10 @@ func InitDB(filepath string) *sql.DB {
 		SchemaSyndicateInvites,
 		SchemaSyndicateInviteTokens,
 	}
+	if cfg == nil {
+		logging.Error("❌ config is nil — did config.Init() run before InitDB?")
+		panic("config not ready")
+	}
 
 	for _, stmt := range schemas {
 		if _, err := db.Exec(stmt); err != nil {