[VOL-1386] This commit add "dep" as the package management tool
for voltha-go.
Change-Id: I52bc4911dd00a441756ec7c30f46d45091f3f90e
diff --git a/vendor/github.com/hashicorp/go-cleanhttp/handlers.go b/vendor/github.com/hashicorp/go-cleanhttp/handlers.go
new file mode 100644
index 0000000..7eda377
--- /dev/null
+++ b/vendor/github.com/hashicorp/go-cleanhttp/handlers.go
@@ -0,0 +1,43 @@
+package cleanhttp
+
+import (
+ "net/http"
+ "strings"
+ "unicode"
+)
+
+// HandlerInput provides input options to cleanhttp's handlers
+type HandlerInput struct {
+ ErrStatus int
+}
+
+// PrintablePathCheckHandler is a middleware that ensures the request path
+// contains only printable runes.
+func PrintablePathCheckHandler(next http.Handler, input *HandlerInput) http.Handler {
+ // Nil-check on input to make it optional
+ if input == nil {
+ input = &HandlerInput{
+ ErrStatus: http.StatusBadRequest,
+ }
+ }
+
+ // Default to http.StatusBadRequest on error
+ if input.ErrStatus == 0 {
+ input.ErrStatus = http.StatusBadRequest
+ }
+
+ return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+ // Check URL path for non-printable characters
+ idx := strings.IndexFunc(r.URL.Path, func(c rune) bool {
+ return !unicode.IsPrint(c)
+ })
+
+ if idx != -1 {
+ w.WriteHeader(input.ErrStatus)
+ return
+ }
+
+ next.ServeHTTP(w, r)
+ return
+ })
+}