Parse url path to extract query parameters from filename when calling embed.FS (#103)

* add oauth redirect test case

* fix: parse url path to exclude query params from filename

Author: sapk

swagger.go

@@ -3,6 +3,7 @@ package httpSwagger
 import (
 	"html/template"
 	"net/http"
+	"net/url"
 	"path/filepath"
 	"regexp"
 
@@ -213,7 +214,13 @@ func Handler(configFns ...func(*Config)) http.HandlerFunc {
 		case "":
 			http.Redirect(w, r, matches[1]+"/"+"index.html", http.StatusMovedPermanently)
 		default:
-			r.URL.Path = matches[2]
+			var err error
+			r.URL, err = url.Parse(matches[2])
+			if err != nil {
+				http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
+
+				return
+			}
 			http.FileServer(http.FS(swaggerFiles.FS)).ServeHTTP(w, r)
 		}
 	}

swagger_test.go

@@ -96,6 +96,10 @@ func TestWrapHandler(t *testing.T) {
 		assert.Equal(t, http.StatusOK, w5.Code)
 		assert.Equal(t, w5.Header()["Content-Type"][0], "application/javascript")
 
+		w6 := performRequest(http.MethodGet, test.RootFolder+"oauth2-redirect.html?state=0&session_state=1&code=2", router)
+		assert.Equal(t, http.StatusOK, w6.Code)
+		assert.Equal(t, w6.Header()["Content-Type"][0], "text/html; charset=utf-8")
+
 		assert.Equal(t, http.StatusNotFound, performRequest(http.MethodGet, test.RootFolder+"notfound", router).Code)
 
 		assert.Equal(t, 301, performRequest(http.MethodGet, test.RootFolder, router).Code)