Use maintained gziphandler (#30592) (#30637)

Replace #27894
Backport #30592

Co-authored-by: delvh <dev.lh@web.de>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

go.mod

@@ -16,7 +16,6 @@ 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 v1.9.1
 	github.com/alecthomas/chroma/v2 v2.13.0
 	github.com/blakesmith/ar v0.0.0-20190502131153-809d4375e1fb
@@ -68,7 +67,7 @@ require (
 	github.com/json-iterator/go v1.1.12
 	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51
 	github.com/keybase/go-crypto v0.0.0-20200123153347-de78d2cb44f4
-	github.com/klauspost/compress v1.17.7
+	github.com/klauspost/compress v1.17.8
 	github.com/klauspost/cpuid/v2 v2.2.7
 	github.com/lib/pq v1.10.9
 	github.com/markbates/goth v1.79.0

go.sum

@@ -61,8 +61,6 @@ 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 v1.0.0 h1:LRuvITjQWX+WIfr930YHG2HNfjR1uOfyf5vE0kC2U78=
 github.com/ProtonMail/go-crypto v1.0.0/go.mod h1:EjAoLdwvbIOoOQr3ihjnSoLZRtE8azugULFRteWMNc0=
 github.com/PuerkitoBio/goquery v1.9.1 h1:mTL6XjbJTZdpfL+Gwl5U2h1l9yEkJjhmlTeV9VPW7UI=
@@ -493,8 +491,8 @@ github.com/klauspost/compress v1.11.4/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYs
 github.com/klauspost/compress v1.13.6/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47etQ6QUkpK6sk=
 github.com/klauspost/compress v1.15.0/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47etQ6QUkpK6sk=
 github.com/klauspost/compress v1.15.6/go.mod h1:PhcZ0MbTNciWF3rruxRgKxI5NkcHHrHUDtV4Yw2GlzU=
-github.com/klauspost/compress v1.17.7 h1:ehO88t2UGzQK66LMdE8tibEd1ErmzZjNEqWkjLAKQQg=
+github.com/klauspost/compress v1.17.8 h1:YcnTYrq7MikUT7k0Yb5eceMmALQPYBW/Xltxn0NAMnU=
-github.com/klauspost/compress v1.17.7/go.mod h1:Di0epgTjJY877eYKx5yC51cX2A2Vl2ibi7bDH9ttBbw=
+github.com/klauspost/compress v1.17.8/go.mod h1:Di0epgTjJY877eYKx5yC51cX2A2Vl2ibi7bDH9ttBbw=
 github.com/klauspost/cpuid v1.2.0/go.mod h1:Pj4uuM528wm8OyEC2QMXAi2YiTZ96dNQPGgoMS4s3ek=
 github.com/klauspost/cpuid/v2 v2.0.1/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
 github.com/klauspost/cpuid/v2 v2.0.12/go.mod h1:g2LTdtYhdyuGPqyWyv7qRAmj1WBqxuObKfj5c0PQa7c=

modules/web/handler.go

@@ -128,6 +128,16 @@ func hasResponseBeenWritten(argsIn []reflect.Value) bool {
 	return false
 }
 
+func wrapHandlerProvider[T http.Handler](hp func(next http.Handler) T, funcInfo *routing.FuncInfo) func(next http.Handler) http.Handler {
+	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)
+		})
+	}
+}
+
 // toHandlerProvider converts a handler to a handler provider
 // A handler provider is a function that takes a "next" http.Handler, it can be used as a middleware
 func toHandlerProvider(handler any) func(next http.Handler) http.Handler {
@@ -138,13 +148,9 @@ func toHandlerProvider(handler any) func(next http.Handler) http.Handler {
 	}
 
 	if hp, ok := handler.(func(next http.Handler) http.Handler); ok {
-		return func(next http.Handler) http.Handler {
+		return wrapHandlerProvider(hp, funcInfo)
-			h := hp(next) // this handle could be dynamically generated, so we can't use it for debug info
+	} else if hp, ok := handler.(func(http.Handler) http.HandlerFunc); ok {
-			return http.HandlerFunc(func(resp http.ResponseWriter, req *http.Request) {
+		return wrapHandlerProvider(hp, funcInfo)
-				routing.UpdateFuncInfo(req.Context(), funcInfo)
-				h.ServeHTTP(resp, req)
-			})
-		}
 	}
 
 	provider := func(next http.Handler) http.Handler {

routers/web/web.go

@@ -48,9 +48,9 @@ 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"
 )
 
@@ -244,11 +244,13 @@ func Routes() *web.Route {
 	var mid []any
 
 	if setting.EnableGzip {
-		h, err := gziphandler.GzipHandlerWithOpts(gziphandler.MinSize(GzipMinSize))
+		// random jitter is recommended by: https://pkg.go.dev/github.com/klauspost/compress/gzhttp#readme-breach-mitigation
+		// compression level 6 is the gzip default and a good general tradeoff between speed, CPU usage, and compression
+		wrapper, err := gzhttp.NewWrapper(gzhttp.RandomJitter(32, 0, false), gzhttp.MinSize(GzipMinSize), gzhttp.CompressionLevel(6))
 		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 {