[GITEA] Use maintained gziphandler

- https://github.com/NYTimes/gziphandler doesn't seems to be maintained
anymore and Forgejo already includes
https://github.com/klauspost/compress which provides a maintained and
faster gzip handler fork.
- Enables Jitter to prevent BREACH attacks, as this *seems* to be
possible in the context of Forgejo.

(cherry picked from commit cc2847241d)
(cherry picked from commit 99ba56a876)

Conflicts:
	go.sum
	https://codeberg.org/forgejo/forgejo/pulls/1581
(cherry picked from commit 711638193d)
(cherry picked from commit 9c12a37fde)
(cherry picked from commit 91191aaaed)
(cherry picked from commit 72be417f84)
(cherry picked from commit 98497c84da)
(cherry picked from commit fba042adb5)
(cherry picked from commit dd2414f226)

Conflicts:
	routers/web/web.go
	https://codeberg.org/forgejo/forgejo/issues/2016

go.mod

@@ -15,7 +15,6 @@ require (
 	gitea.com/lunny/levelqueue v0.4.2-0.20230414023320-3c0159fe0fe4
 	github.com/42wim/sshsig v0.0.0-20211121163825-841cf5bbc121
 	github.com/Azure/go-ntlmssp v0.0.0-20221128193559-754e69321358
-	github.com/NYTimes/gziphandler v1.1.1
 	github.com/PuerkitoBio/goquery v1.8.1
 	github.com/alecthomas/chroma/v2 v2.10.0
 	github.com/blakesmith/ar v0.0.0-20190502131153-809d4375e1fb

go.sum

@@ -101,8 +101,6 @@ github.com/Masterminds/sprig/v3 v3.2.3/go.mod h1:rXcFaZ2zZbLRJv/xSysmlgIM1u11eBa
 github.com/Microsoft/go-winio v0.5.2/go.mod h1:WpS1mjBmmwHBEWmogvA2mj8546UReBk4v8QkMxJ6pZY=
 github.com/Microsoft/go-winio v0.6.1 h1:9/kr64B9VUZrLm5YYwbGtUJnMgqWVOdUAXu6Migciow=
 github.com/Microsoft/go-winio v0.6.1/go.mod h1:LRdKpFKfdobln8UmuiYcKPot9D2v6svN5+sAH+4kjUM=
-github.com/NYTimes/gziphandler v1.1.1 h1:ZUDjpQae29j0ryrS0u/B8HZfJBtBQHjqw2rQ2cqUQ3I=
-github.com/NYTimes/gziphandler v1.1.1/go.mod h1:n/CVRwUEOgIxrgPvAQhUUr9oeUtvrhMomdKFjzJNB0c=
 github.com/ProtonMail/go-crypto v0.0.0-20230923063757-afb1ddc0824c h1:kMFnB0vCcX7IL/m9Y5LO+KQYv+t1CQOiFe6+SV2J7bE=
 github.com/ProtonMail/go-crypto v0.0.0-20230923063757-afb1ddc0824c/go.mod h1:EjAoLdwvbIOoOQr3ihjnSoLZRtE8azugULFRteWMNc0=
 github.com/PuerkitoBio/goquery v1.8.1 h1:uQxhNlArOIdbrH1tr0UXwdVFgDcZDrZVdcpygAcwmWM=

modules/web/handler.go

@@ -147,6 +147,16 @@ func toHandlerProvider(handler any) func(next http.Handler) http.Handler {
 		}
 	}
 
+	if hp, ok := handler.(func(next http.Handler) http.HandlerFunc); ok {
+		return func(next http.Handler) http.Handler {
+			h := hp(next) // this handle could be dynamically generated, so we can't use it for debug info
+			return http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
+				routing.UpdateFuncInfo(req.Context(), funcInfo)
+				h.ServeHTTP(resp, req)
+			})
+		}
+	}
+
 	provider := func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(respOrig http.ResponseWriter, req *http.Request) {
 			// wrap the response writer to check whether the response has been written

routers/web/web.go

@@ -48,17 +48,12 @@ import (
 	_ "code.gitea.io/gitea/modules/session" // to registers all internal adapters
 
 	"gitea.com/go-chi/captcha"
-	"github.com/NYTimes/gziphandler"
 	chi_middleware "github.com/go-chi/chi/v5/middleware"
 	"github.com/go-chi/cors"
+	"github.com/klauspost/compress/gzhttp"
 	"github.com/prometheus/client_golang/prometheus"
 )
 
-const (
-	// GzipMinSize represents min size to compress for the body size of response
-	GzipMinSize = 1400
-)
-
 // optionsCorsHandler return a http handler which sets CORS options if enabled by config, it blocks non-CORS OPTIONS requests.
 func optionsCorsHandler() func(next http.Handler) http.Handler {
 	var corsHandler func(next http.Handler) http.Handler
@@ -244,11 +239,11 @@ func Routes() *web.Route {
 	var mid []any
 
 	if setting.EnableGzip {
-		h, err := gziphandler.GzipHandlerWithOpts(gziphandler.MinSize(GzipMinSize))
+		wrapper, err := gzhttp.NewWrapper(gzhttp.RandomJitter(32, 0, false))
 		if err != nil {
-			log.Fatal("GzipHandlerWithOpts failed: %v", err)
+			log.Fatal("gzhttp.NewWrapper failed: %v", err)
 		}
-		mid = append(mid, h)
+		mid = append(mid, wrapper)
 	}
 
 	if setting.Service.EnableCaptcha {

tests/integration/lfs_getobject_test.go

@@ -18,9 +18,9 @@ import (
 	"code.gitea.io/gitea/modules/json"
 	"code.gitea.io/gitea/modules/lfs"
 	"code.gitea.io/gitea/modules/setting"
-	"code.gitea.io/gitea/routers/web"
 	"code.gitea.io/gitea/tests"
 
+	"github.com/klauspost/compress/gzhttp"
 	gzipp "github.com/klauspost/compress/gzip"
 	"github.com/stretchr/testify/assert"
 )
@@ -132,7 +132,7 @@ func TestGetLFSSmallTokenFail(t *testing.T) {
 
 func TestGetLFSLarge(t *testing.T) {
 	defer tests.PrepareTestEnv(t)()
-	content := make([]byte, web.GzipMinSize*10)
+	content := make([]byte, gzhttp.DefaultMinSize*10)
 	for i := range content {
 		content[i] = byte(i % 256)
 	}
@@ -143,7 +143,7 @@ func TestGetLFSLarge(t *testing.T) {
 
 func TestGetLFSGzip(t *testing.T) {
 	defer tests.PrepareTestEnv(t)()
-	b := make([]byte, web.GzipMinSize*10)
+	b := make([]byte, gzhttp.DefaultMinSize*10)
 	for i := range b {
 		b[i] = byte(i % 256)
 	}
@@ -159,7 +159,7 @@ func TestGetLFSGzip(t *testing.T) {
 
 func TestGetLFSZip(t *testing.T) {
 	defer tests.PrepareTestEnv(t)()
-	b := make([]byte, web.GzipMinSize*10)
+	b := make([]byte, gzhttp.DefaultMinSize*10)
 	for i := range b {
 		b[i] = byte(i % 256)
 	}