🎨 Style!: Update CSRF and Limiter to remove repetitive names (#2846)

chore!: Update CSRF and Limiter to remove repetitive names

The `exported` rule of revive warns to not repeat the package name in
method names. For example, prefer `csrf.FromCookie` over
`csrf.CsrfFromCookie`.

This is a breaking change for v3.

It appears that these issues will not be caught by the linter until the
`exported` rule is reenabled. This requires comments on all exported
symbols, which is a much broader effort.

.golangci.yml

@@ -109,8 +109,6 @@ linters-settings:
         disabled: true
       - name: exported
         disabled: true
-        arguments:
-          - disableStutteringCheck # TODO https://github.com/gofiber/fiber/issues/2816
       - name: file-header
         disabled: true
       - name: function-result-limit

docs/api/middleware/csrf.md

@@ -31,7 +31,7 @@ By default, the middleware generates and stores tokens using the `fiber.Storage`
 When the authorization status changes, the previously issued token MUST be deleted, and a new one generated. See [Token Lifecycle](#token-lifecycle) [Deleting Tokens](#deleting-tokens) for more information.
 
 :::caution
-When using this pattern, it's important to set the `CookieSameSite` option to `Lax` or `Strict` and ensure that the Extractor is not `CsrfFromCookie`, and KeyLookup is not `cookie:<name>`.
+When using this pattern, it's important to set the `CookieSameSite` option to `Lax` or `Strict` and ensure that the Extractor is not `FromCookie`, and KeyLookup is not `cookie:<name>`.
 :::
 
 :::note
@@ -206,7 +206,7 @@ var ConfigDefault = Config{
 	Expiration:        1 * time.Hour,
 	KeyGenerator:      utils.UUIDv4,
 	ErrorHandler:      defaultErrorHandler,
-	Extractor:         CsrfFromHeader(HeaderName),
+	Extractor:         FromHeader(HeaderName),
 	SessionKey:        "csrfToken",
 }
 ```
@@ -226,7 +226,7 @@ var ConfigDefault = Config{
 	Expiration:        1 * time.Hour,
 	KeyGenerator:      utils.UUIDv4,
 	ErrorHandler:      defaultErrorHandler,
-	Extractor:         CsrfFromHeader(HeaderName),
+	Extractor:         FromHeader(HeaderName),
 	Session:           session.Store,
 	SessionKey:        "csrfToken",
 }

middleware/csrf/config.go

@@ -117,7 +117,7 @@ var ConfigDefault = Config{
 	Expiration:     1 * time.Hour,
 	KeyGenerator:   utils.UUIDv4,
 	ErrorHandler:   defaultErrorHandler,
-	Extractor:      CsrfFromHeader(HeaderName),
+	Extractor:      FromHeader(HeaderName),
 	SessionKey:     "csrfToken",
 }
 
@@ -169,15 +169,15 @@ func configDefault(config ...Config) Config {
 
 	if cfg.Extractor == nil {
 		// By default we extract from a header
-		cfg.Extractor = CsrfFromHeader(textproto.CanonicalMIMEHeaderKey(selectors[1]))
+		cfg.Extractor = FromHeader(textproto.CanonicalMIMEHeaderKey(selectors[1]))
 
 		switch selectors[0] {
 		case "form":
-			cfg.Extractor = CsrfFromForm(selectors[1])
+			cfg.Extractor = FromForm(selectors[1])
 		case "query":
-			cfg.Extractor = CsrfFromQuery(selectors[1])
+			cfg.Extractor = FromQuery(selectors[1])
 		case "param":
-			cfg.Extractor = CsrfFromParam(selectors[1])
+			cfg.Extractor = FromParam(selectors[1])
 		case "cookie":
 			if cfg.Session == nil {
 				log.Warn("[CSRF] Cookie extractor is not recommended without a session store")
@@ -185,7 +185,7 @@ func configDefault(config ...Config) Config {
 			if cfg.CookieSameSite == "None" || cfg.CookieSameSite != "Lax" && cfg.CookieSameSite != "Strict" {
 				log.Warn("[CSRF] Cookie extractor is only recommended for use with SameSite=Lax or SameSite=Strict")
 			}
-			cfg.Extractor = CsrfFromCookie(selectors[1])
+			cfg.Extractor = FromCookie(selectors[1])
 			cfg.CookieName = selectors[1] // Cookie name is the same as the key
 		}
 	}

middleware/csrf/csrf.go

@@ -17,7 +17,8 @@ var (
 	dummyValue       = []byte{'+'}
 )
 
-type CSRFHandler struct {
+// Handler handles
+type Handler struct {
 	config         *Config
 	sessionManager *sessionManager
 	storageManager *storageManager
@@ -58,7 +59,7 @@ func New(config ...Config) fiber.Handler {
 		}
 
 		// Store the CSRF handler in the context
-		c.Locals(handlerKey, &CSRFHandler{
+		c.Locals(handlerKey, &Handler{
 			config:         &cfg,
 			sessionManager: sessionManager,
 			storageManager: storageManager,
@@ -98,10 +99,10 @@ func New(config ...Config) fiber.Handler {
 				return cfg.ErrorHandler(c, ErrTokenNotFound)
 			}
 
-			// If not using CsrfFromCookie extractor, check that the token matches the cookie
+			// If not using FromCookie extractor, check that the token matches the cookie
 			// This is to prevent CSRF attacks by using a Double Submit Cookie method
 			// Useful when we do not have access to the users Session
-			if !isCsrfFromCookie(cfg.Extractor) && !compareStrings(extractedToken, c.Cookies(cfg.CookieName)) {
+			if !isFromCookie(cfg.Extractor) && !compareStrings(extractedToken, c.Cookies(cfg.CookieName)) {
 				return cfg.ErrorHandler(c, ErrTokenInvalid)
 			}
 
@@ -154,10 +155,10 @@ func TokenFromContext(c fiber.Ctx) string {
 	return token
 }
 
-// HandlerFromContext returns the CSRFHandler found in the context
+// HandlerFromContext returns the Handler found in the context
 // returns nil if the handler does not exist
-func HandlerFromContext(c fiber.Ctx) *CSRFHandler {
-	handler, ok := c.Locals(handlerKey).(*CSRFHandler)
+func HandlerFromContext(c fiber.Ctx) *Handler {
+	handler, ok := c.Locals(handlerKey).(*Handler)
 	if !ok {
 		return nil
 	}
@@ -219,11 +220,11 @@ func setCSRFCookie(c fiber.Ctx, cfg Config, token string, expiry time.Duration)
 
 // DeleteToken removes the token found in the context from the storage
 // and expires the CSRF cookie
-func (handler *CSRFHandler) DeleteToken(c fiber.Ctx) error {
+func (handler *Handler) DeleteToken(c fiber.Ctx) error {
 	// Get the config from the context
 	config := handler.config
 	if config == nil {
-		panic("CSRFHandler config not found in context")
+		panic("CSRF Handler config not found in context")
 	}
 	// Extract token from the client request cookie
 	cookieToken := c.Cookies(config.CookieName)
@@ -237,9 +238,9 @@ func (handler *CSRFHandler) DeleteToken(c fiber.Ctx) error {
 	return nil
 }
 
-// isCsrfFromCookie checks if the extractor is set to ExtractFromCookie
-func isCsrfFromCookie(extractor any) bool {
-	return reflect.ValueOf(extractor).Pointer() == reflect.ValueOf(CsrfFromCookie).Pointer()
+// isFromCookie checks if the extractor is set to ExtractFromCookie
+func isFromCookie(extractor any) bool {
+	return reflect.ValueOf(extractor).Pointer() == reflect.ValueOf(FromCookie).Pointer()
 }
 
 // refererMatchesHost checks that the referer header matches the host header

middleware/csrf/extractors.go

@@ -14,8 +14,8 @@ var (
 	ErrMissingCookie = errors.New("missing csrf token in cookie")
 )
 
-// csrfFromParam returns a function that extracts token from the url param string.
-func CsrfFromParam(param string) func(c fiber.Ctx) (string, error) {
+// FromParam returns a function that extracts token from the url param string.
+func FromParam(param string) func(c fiber.Ctx) (string, error) {
 	return func(c fiber.Ctx) (string, error) {
 		token := c.Params(param)
 		if token == "" {
@@ -25,8 +25,8 @@ func CsrfFromParam(param string) func(c fiber.Ctx) (string, error) {
 	}
 }
 
-// csrfFromForm returns a function that extracts a token from a multipart-form.
-func CsrfFromForm(param string) func(c fiber.Ctx) (string, error) {
+// FromForm returns a function that extracts a token from a multipart-form.
+func FromForm(param string) func(c fiber.Ctx) (string, error) {
 	return func(c fiber.Ctx) (string, error) {
 		token := c.FormValue(param)
 		if token == "" {
@@ -36,8 +36,8 @@ func CsrfFromForm(param string) func(c fiber.Ctx) (string, error) {
 	}
 }
 
-// csrfFromCookie returns a function that extracts token from the cookie header.
-func CsrfFromCookie(param string) func(c fiber.Ctx) (string, error) {
+// FromCookie returns a function that extracts token from the cookie header.
+func FromCookie(param string) func(c fiber.Ctx) (string, error) {
 	return func(c fiber.Ctx) (string, error) {
 		token := c.Cookies(param)
 		if token == "" {
@@ -47,8 +47,8 @@ func CsrfFromCookie(param string) func(c fiber.Ctx) (string, error) {
 	}
 }
 
-// csrfFromHeader returns a function that extracts token from the request header.
-func CsrfFromHeader(param string) func(c fiber.Ctx) (string, error) {
+// FromHeader returns a function that extracts token from the request header.
+func FromHeader(param string) func(c fiber.Ctx) (string, error) {
 	return func(c fiber.Ctx) (string, error) {
 		token := c.Get(param)
 		if token == "" {
@@ -58,8 +58,8 @@ func CsrfFromHeader(param string) func(c fiber.Ctx) (string, error) {
 	}
 }
 
-// csrfFromQuery returns a function that extracts token from the query string.
-func CsrfFromQuery(param string) func(c fiber.Ctx) (string, error) {
+// FromQuery returns a function that extracts token from the query string.
+func FromQuery(param string) func(c fiber.Ctx) (string, error) {
 	return func(c fiber.Ctx) (string, error) {
 		token := fiber.Query[string](c, param)
 		if token == "" {

middleware/limiter/config.go

@@ -55,7 +55,7 @@ type Config struct {
 	// LimiterMiddleware is the struct that implements a limiter middleware.
 	//
 	// Default: a new Fixed Window Rate Limiter
-	LimiterMiddleware LimiterHandler
+	LimiterMiddleware Handler
 }
 
 // ConfigDefault is the default config

middleware/limiter/limiter.go

@@ -11,7 +11,7 @@ const (
 	xRateLimitReset     = "X-RateLimit-Reset"
 )
 
-type LimiterHandler interface {
+type Handler interface {
 	New(config Config) fiber.Handler
 }