zero width only converted if characters detected

conf/example.yml

@@ -80,7 +80,7 @@ Server: # Configure the way the HTTP server behaves.
   # How many TOTAL requests the server can handle at once.
   # Requests will not be served to ANYONE if the # of simultaneous connections is above this number.
   # It is recommended you keep this value around 512 to avoid issues with high-traffic situations.
-  Concurrency: 512
+  Concurrency:
 
 Redis: # Configure the Redis connection. The values in this section are self-explanatory.
   URI:
@@ -88,8 +88,4 @@ Redis: # Configure the Redis connection. The values in this section are self-exp
   DB: 0
 
 # A boolean. Set this value to true if you want to have /stats show more data, including memory usage.
-MoreStats:
-
-# A boolean. Set this value to true if zero width URLs will always be used, regardless of whether the user sets
-# the zerowidth parameter in the request URL to 0 or not.
-ForceZeroWidth:
+MoreStats:

global/global.go

@@ -13,5 +13,5 @@ var RedisClient *redis.Client
 
 const (
 	// Version is the current version of the server.
-	Version = "1.3.1"
+	Version = "1.3.2"
 )

routes/serve_file.go

@@ -9,6 +9,7 @@ import (
 	"github.com/vysiondev/tytanium/security"
 	"github.com/vysiondev/tytanium/utils"
 	"io"
+	"net/url"
 	"os"
 	"path"
 	"regexp"
@@ -44,9 +45,11 @@ func ServeFile(ctx *fasthttp.RequestCtx) {
 		ServeNotFound(ctx)
 		return
 	}
-
-	// Convert all zero-width characters to normal string
-	p = utils.ZWSToString(p)
+	// Convert entire path to normal string if a zero-width character is detected at the beginning.
+	// %2F = /, %F3%A0 = part of zero width character
+	if strings.HasPrefix(url.QueryEscape(p), "%2F%F3%A0") {
+		p = utils.ZWSToString(p)
+	}
 
 	filePath := path.Join(global.Configuration.Storage.Directory, p)
 

utils/zws.go

@@ -1,6 +1,9 @@
 package utils
 
-import "strings"
+import (
+	"fmt"
+	"strings"
+)
 
 // hey yeah if it works and its stupid it aint stupid
 const characterIndex = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789."
@@ -50,6 +53,7 @@ func StringToZWS(baseStr string) string {
 func ZWSToString(encodedStr string) string {
 
 	rL := []rune(encodedStr)
+	fmt.Println(len(rL))
 	var finalStr string
 
 	for ind, r := range rL {
@@ -62,7 +66,7 @@ func ZWSToString(encodedStr string) string {
 			}
 		}
 		if !match {
-			finalStr += string(encodedStr[ind])
+			finalStr += string(rL[ind])
 		}
 	}