From 99f36b35f76394534fa7ec0dfab121c8aeb81817 Mon Sep 17 00:00:00 2001
From: n0vad3v <n0vad3v@riseup.net>
Date: Tue, 30 Jun 2020 16:12:35 +0800
Subject: [PATCH] Render origin image on MSIE

---
 helper.go      | 6 +++++-
 helper_test.go | 4 ++--
 router.go      | 4 ++--
 3 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/helper.go b/helper.go
index 5e63526..b17a143 100644
--- a/helper.go
+++ b/helper.go
@@ -61,7 +61,7 @@ func GenWebpAbs(RawImagePath string, ExhaustPath string, ImgFilename string, req
 	return cwd, WebpAbsolutePath
 }
 
-func isSafari(UA string) bool {
+func goOrigin(UA string) bool {
 	// for more information, please check test case
 	if strings.Contains(UA, "Firefox") || strings.Contains(UA, "Chrome") {
 		// Chrome or firefox on macOS Windows
@@ -72,5 +72,9 @@ func isSafari(UA string) bool {
 	} else {
 		return true
 	}
+	if strings.Contains(UA, "rv:11.0") || strings.Contains(UA, "MSIE") {
+		// MSIE
+		return true
+	}
 	return false
 }
diff --git a/helper_test.go b/helper_test.go
index 33b2170..a3d156f 100644
--- a/helper_test.go
+++ b/helper_test.go
@@ -58,7 +58,7 @@ func TestGenWebpAbs(t *testing.T) {
 	}
 }
 
-func TestisSafari(t *testing.T) {
+func TestgoOrigin(t *testing.T) {
 	// reference: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/User-Agent/Firefox
 	// https://developer.chrome.com/multidevice/user-agent#chrome_for_ios_user_agent
 
@@ -89,7 +89,7 @@ func TestisSafari(t *testing.T) {
 
 	for browser, is := range testCase {
 
-		if is != isSafari(browser) {
+		if is != goOrigin(browser) {
 			t.Errorf("[%v]:[%s]", is, browser)
 		}
 	}
diff --git a/router.go b/router.go
index abeda26..ef0788d 100644
--- a/router.go
+++ b/router.go
@@ -20,9 +20,9 @@ func Convert(ImgPath string, ExhaustPath string, AllowedTypes []string, QUALITY
 		var ImgFilename = path.Base(reqURI)          // pure filename, 123.jpg
 		var finalFile string                         // We'll only need one c.sendFile()
 		var UA = c.Get("User-Agent")
-		done := isSafari(UA)
+		done := goOrigin(UA)
 		if done {
-			log.Infof("A Safari user has arrived...%s", UA)
+			log.Infof("A Safari/IE/whatever user has arrived...%s", UA)
 			c.SendFile(RawImageAbs)
 			return
 		}