✨ Static files support clean url

pkg/sign/responder.go

@@ -0,0 +1,128 @@
+package sign
+
+import (
+	"errors"
+	"fmt"
+	"io/fs"
+	"net/http"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/gofiber/fiber/v2"
+	"github.com/gofiber/fiber/v2/middleware/proxy"
+	"github.com/gofiber/fiber/v2/utils"
+	"github.com/samber/lo"
+	"github.com/spf13/viper"
+	"github.com/valyala/fasthttp"
+)
+
+func makeHypertextResponse(ctx *fiber.Ctx, upstream *UpstreamConfig) error {
+	timeout := time.Duration(viper.GetInt64("performance.network_timeout")) * time.Millisecond
+	return proxy.Do(ctx, upstream.MakeURI(ctx), &fasthttp.Client{
+		ReadTimeout:  timeout,
+		WriteTimeout: timeout,
+	})
+}
+
+func makeFileResponse(ctx *fiber.Ctx, upstream *UpstreamConfig) error {
+	uri, queries := upstream.GetRawURI()
+	root := http.Dir(uri)
+
+	method := ctx.Method()
+
+	// We only serve static assets for GET and HEAD methods
+	if method != fiber.MethodGet && method != fiber.MethodHead {
+		return ctx.Next()
+	}
+
+	// Strip prefix
+	prefix := ctx.Route().Path
+	path := strings.TrimPrefix(ctx.Path(), prefix)
+	if !strings.HasPrefix(path, "/") {
+		path = "/" + path
+	}
+
+	// Add prefix
+	if queries.Get("prefix") != "" {
+		path = queries.Get("prefix") + path
+	}
+
+	if len(path) > 1 {
+		path = utils.TrimRight(path, '/')
+	}
+
+	file, err := root.Open(path)
+	if err != nil && errors.Is(err, fs.ErrNotExist) {
+		if queries.Get("suffix") != "" {
+			file, err = root.Open(path + queries.Get("suffix"))
+		}
+		if err != nil && queries.Get("fallback") != "" {
+			file, err = root.Open(queries.Get("fallback"))
+		}
+	}
+
+	if err != nil {
+		if errors.Is(err, fs.ErrNotExist) {
+			return ctx.Status(fiber.StatusNotFound).Next()
+		}
+		return fmt.Errorf("failed to open: %w", err)
+	}
+
+	stat, err := file.Stat()
+	if err != nil {
+		return fmt.Errorf("failed to stat: %w", err)
+	}
+
+	// Serve index if path is directory
+	if stat.IsDir() {
+		indexPath := utils.TrimRight(path, '/') + queries.Get("index")
+		index, err := root.Open(indexPath)
+		if err == nil {
+			indexStat, err := index.Stat()
+			if err == nil {
+				file = index
+				stat = indexStat
+			}
+		}
+	}
+
+	ctx.Status(fiber.StatusOK)
+
+	modTime := stat.ModTime()
+	contentLength := int(stat.Size())
+
+	// Set Content-Type header
+	if queries.Get("charset") == "" {
+		ctx.Type(filepath.Ext(stat.Name()))
+	} else {
+		ctx.Type(filepath.Ext(stat.Name()), queries.Get("charset"))
+	}
+
+	// Set Last-Modified header
+	if !modTime.IsZero() {
+		ctx.Set(fiber.HeaderLastModified, modTime.UTC().Format(http.TimeFormat))
+	}
+
+	// Set Cache-Control header
+	if method == fiber.MethodGet {
+		maxAge, err := strconv.Atoi(queries.Get("maxAge"))
+		if lo.Ternary(err != nil, maxAge, 0) > 0 {
+			ctx.Set(fiber.HeaderCacheControl, "public, max-age="+queries.Get("maxAge"))
+		}
+		ctx.Response().SetBodyStream(file, contentLength)
+		return nil
+	}
+	if method == fiber.MethodHead {
+		ctx.Request().ResetBody()
+		ctx.Response().SkipBody = true
+		ctx.Response().Header.SetContentLength(contentLength)
+		if err := file.Close(); err != nil {
+			return fmt.Errorf("failed to close: %w", err)
+		}
+		return nil
+	}
+
+	return ctx.Next()
+}

pkg/sign/router.go

@@ -2,16 +2,9 @@ package sign
 
 import (
 	"errors"
-	"github.com/gofiber/fiber/v2"
-	"github.com/gofiber/fiber/v2/middleware/filesystem"
-	"github.com/gofiber/fiber/v2/middleware/proxy"
-	"github.com/samber/lo"
-	"github.com/spf13/viper"
-	"github.com/valyala/fasthttp"
 	"math/rand"
-	"net/http"
-	"strconv"
-	"time"
+
+	"github.com/gofiber/fiber/v2"
 )
 
 type AppConfig struct {
@@ -28,43 +21,16 @@ func (v *AppConfig) Forward(ctx *fiber.Ctx, site SiteConfig) error {
 
 	switch upstream.GetType() {
 	case UpstreamTypeHypertext:
-		timeout := time.Duration(viper.GetInt64("performance.network_timeout")) * time.Millisecond
-		return proxy.Do(ctx, upstream.MakeURI(ctx), &fasthttp.Client{
-			ReadTimeout:  timeout,
-			WriteTimeout: timeout,
-		})
+		return makeHypertextResponse(ctx, upstream)
 	case UpstreamTypeFile:
-		uri, queries := upstream.GetRawURI()
-		fs := filesystem.New(filesystem.Config{
-			Root:               http.Dir(uri),
-			ContentTypeCharset: queries.Get("charset"),
-			Index: func() string {
-				val := queries.Get("index")
-				return lo.Ternary(len(val) > 0, val, "index.html")
-			}(),
-			NotFoundFile: func() string {
-				val := queries.Get("fallback")
-				return lo.Ternary(len(val) > 0, val, "404.html")
-			}(),
-			Browse: func() bool {
-				browse, err := strconv.ParseBool(queries.Get("browse"))
-				return lo.Ternary(err == nil, browse, false)
-			}(),
-			MaxAge: func() int {
-				age, err := strconv.Atoi(queries.Get("maxAge"))
-				return lo.Ternary(err == nil, age, 3600)
-			}(),
-		})
-		return fs(ctx)
+		return makeFileResponse(ctx, upstream)
 	default:
 		return fiber.ErrBadGateway
 	}
 }
 
 type SiteConfig struct {
-	ID string `json:"id"`
-
-	Name         string                     `json:"name"`
+	ID           string                     `json:"id"`
 	Rules        []RouterRuleConfig         `json:"rules"`
 	Transformers []RequestTransformerConfig `json:"transformers"`
 	Upstreams    []UpstreamConfig           `json:"upstreams"`

pkg/sign/upstream.go

@@ -15,10 +15,8 @@ const (
 )
 
 type UpstreamConfig struct {
-	ID string `json:"id"`
-
-	Name string `json:"name"`
-	URI  string `json:"uri"`
+	ID  string `json:"id"`
+	URI string `json:"uri"`
 }
 
 func (v *UpstreamConfig) GetType() string {