chore: security improvement (#203)

Author: ubogdan

.github/workflows/ci.yml

@@ -10,7 +10,7 @@ jobs:
   test:
     strategy:
       matrix:
-        go: [ '1.15.x', '1.16.x', '1.17.x' ]
+        go: [ '1.15.x', '1.16.x', '1.17.x', '1.18.x' ]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@master

swagger.go

@@ -134,6 +134,11 @@ func CustomWrapHandler(config *Config, handler *webdav.Handler) gin.HandlerFunc
 	var rexp = regexp.MustCompile(`(.*)(index\.html|doc\.json|favicon-16x16\.png|favicon-32x32\.png|/oauth2-redirect\.html|swagger-ui\.css|swagger-ui\.css\.map|swagger-ui\.js|swagger-ui\.js\.map|swagger-ui-bundle\.js|swagger-ui-bundle\.js\.map|swagger-ui-standalone-preset\.js|swagger-ui-standalone-preset\.js\.map)[\?|.]*`)
 
 	return func(c *gin.Context) {
+		if c.Request.Method != http.MethodGet {
+			c.AbortWithStatus(http.StatusMethodNotAllowed)
+			return
+		}
+
 		matches := rexp.FindStringSubmatch(c.Request.RequestURI)
 
 		if len(matches) != 3 {

swagger_test.go

@@ -1,6 +1,7 @@
 package ginSwagger
 
 import (
+	"net/http"
 	"net/http/httptest"
 	"os"
 	"testing"
@@ -26,43 +27,44 @@ func TestWrapHandler(t *testing.T) {
 
 	router.GET("/*any", WrapHandler(swaggerFiles.Handler, URL("https://github.com/swaggo/gin-swagger")))
 
-	w1 := performRequest("GET", "/index.html", router)
-	assert.Equal(t, 200, w1.Code)
+	assert.Equal(t, http.StatusOK, performRequest("GET", "/index.html", router).Code)
 }
 
 func TestWrapCustomHandler(t *testing.T) {
 	gin.SetMode(gin.TestMode)
 	router := gin.New()
 
-	router.GET("/*any", CustomWrapHandler(&Config{}, swaggerFiles.Handler))
+	router.Any("/*any", CustomWrapHandler(&Config{}, swaggerFiles.Handler))
 
-	w1 := performRequest("GET", "/index.html", router)
-	assert.Equal(t, 200, w1.Code)
+	w1 := performRequest(http.MethodGet, "/index.html", router)
+	assert.Equal(t, http.StatusOK, w1.Code)
 	assert.Equal(t, w1.Header()["Content-Type"][0], "text/html; charset=utf-8")
 
-	w2 := performRequest("GET", "/doc.json", router)
-	assert.Equal(t, 500, w2.Code)
+	assert.Equal(t, http.StatusInternalServerError, performRequest(http.MethodGet, "/doc.json", router).Code)
 
 	swag.Register(swag.Name, &mockedSwag{})
 
-	w2 = performRequest("GET", "/doc.json", router)
-	assert.Equal(t, 200, w2.Code)
+	w2 := performRequest(http.MethodGet, "/doc.json", router)
+	assert.Equal(t, http.StatusOK, w2.Code)
+	assert.Equal(t, w2.Header()["Content-Type"][0], "application/json; charset=utf-8")
 
-	w3 := performRequest("GET", "/favicon-16x16.png", router)
-	assert.Equal(t, 200, w3.Code)
+	w3 := performRequest(http.MethodGet, "/favicon-16x16.png", router)
+	assert.Equal(t, http.StatusOK, w3.Code)
 	assert.Equal(t, w3.Header()["Content-Type"][0], "image/png")
 
-	w4 := performRequest("GET", "/swagger-ui.css", router)
-	assert.Equal(t, 200, w4.Code)
+	w4 := performRequest(http.MethodGet, "/swagger-ui.css", router)
+	assert.Equal(t, http.StatusOK, w4.Code)
 	assert.Equal(t, w4.Header()["Content-Type"][0], "text/css; charset=utf-8")
 
-	w5 := performRequest("GET", "/swagger-ui-bundle.js", router)
-	assert.Equal(t, 200, w5.Code)
+	w5 := performRequest(http.MethodGet, "/swagger-ui-bundle.js", router)
+	assert.Equal(t, http.StatusOK, w5.Code)
 	assert.Equal(t, w5.Header()["Content-Type"][0], "application/javascript")
 
-	w6 := performRequest("GET", "/notfound", router)
-	assert.Equal(t, 404, w6.Code)
+	assert.Equal(t, http.StatusNotFound, performRequest(http.MethodGet, "/notfound", router).Code)
 
+	assert.Equal(t, http.StatusMethodNotAllowed, performRequest(http.MethodPost, "/index.html", router).Code)
+
+	assert.Equal(t, http.StatusMethodNotAllowed, performRequest(http.MethodPut, "/index.html", router).Code)
 }
 
 func TestDisablingWrapHandler(t *testing.T) {
@@ -73,33 +75,20 @@ func TestDisablingWrapHandler(t *testing.T) {
 
 	router.GET("/simple/*any", DisablingWrapHandler(swaggerFiles.Handler, disablingKey))
 
-	w1 := performRequest("GET", "/simple/index.html", router)
-	assert.Equal(t, 200, w1.Code)
-
-	w2 := performRequest("GET", "/simple/doc.json", router)
-	assert.Equal(t, 200, w2.Code)
-
-	w3 := performRequest("GET", "/simple/favicon-16x16.png", router)
-	assert.Equal(t, 200, w3.Code)
+	assert.Equal(t, http.StatusOK, performRequest(http.MethodGet, "/simple/index.html", router).Code)
+	assert.Equal(t, http.StatusOK, performRequest(http.MethodGet, "/simple/doc.json", router).Code)
 
-	w4 := performRequest("GET", "/simple/notfound", router)
-	assert.Equal(t, 404, w4.Code)
+	assert.Equal(t, http.StatusOK, performRequest(http.MethodGet, "/simple/favicon-16x16.png", router).Code)
+	assert.Equal(t, http.StatusNotFound, performRequest(http.MethodGet, "/simple/notfound", router).Code)
 
 	_ = os.Setenv(disablingKey, "true")
 
 	router.GET("/disabling/*any", DisablingWrapHandler(swaggerFiles.Handler, disablingKey))
 
-	w11 := performRequest("GET", "/disabling/index.html", router)
-	assert.Equal(t, 404, w11.Code)
-
-	w22 := performRequest("GET", "/disabling/doc.json", router)
-	assert.Equal(t, 404, w22.Code)
-
-	w44 := performRequest("GET", "/disabling/oauth2-redirect.html", router)
-	assert.Equal(t, 404, w44.Code)
-
-	w55 := performRequest("GET", "/disabling/notfound", router)
-	assert.Equal(t, 404, w55.Code)
+	assert.Equal(t, 404, performRequest(http.MethodGet, "/disabling/index.html", router).Code)
+	assert.Equal(t, 404, performRequest(http.MethodGet, "/disabling/doc.json", router).Code)
+	assert.Equal(t, 404, performRequest(http.MethodGet, "/disabling/oauth2-redirect.html", router).Code)
+	assert.Equal(t, 404, performRequest(http.MethodGet, "/disabling/notfound", router).Code)
 }
 
 func TestDisablingCustomWrapHandler(t *testing.T) {
@@ -110,15 +99,13 @@ func TestDisablingCustomWrapHandler(t *testing.T) {
 
 	router.GET("/simple/*any", DisablingCustomWrapHandler(&Config{}, swaggerFiles.Handler, disablingKey))
 
-	w1 := performRequest("GET", "/simple/index.html", router)
-	assert.Equal(t, 200, w1.Code)
+	assert.Equal(t, http.StatusOK, performRequest(http.MethodGet, "/simple/index.html", router).Code)
 
 	_ = os.Setenv(disablingKey, "true")
 
 	router.GET("/disabling/*any", DisablingCustomWrapHandler(&Config{}, swaggerFiles.Handler, disablingKey))
 
-	w11 := performRequest("GET", "/disabling/index.html", router)
-	assert.Equal(t, 404, w11.Code)
+	assert.Equal(t, http.StatusNotFound, performRequest(http.MethodGet, "/disabling/index.html", router).Code)
 }
 
 func TestWithGzipMiddleware(t *testing.T) {
@@ -129,20 +116,20 @@ func TestWithGzipMiddleware(t *testing.T) {
 
 	router.GET("/*any", WrapHandler(swaggerFiles.Handler))
 
-	w1 := performRequest("GET", "/index.html", router)
-	assert.Equal(t, 200, w1.Code)
+	w1 := performRequest(http.MethodGet, "/index.html", router)
+	assert.Equal(t, http.StatusOK, w1.Code)
 	assert.Equal(t, w1.Header()["Content-Type"][0], "text/html; charset=utf-8")
 
-	w2 := performRequest("GET", "/swagger-ui.css", router)
-	assert.Equal(t, 200, w2.Code)
+	w2 := performRequest(http.MethodGet, "/swagger-ui.css", router)
+	assert.Equal(t, http.StatusOK, w2.Code)
 	assert.Equal(t, w2.Header()["Content-Type"][0], "text/css; charset=utf-8")
 
-	w3 := performRequest("GET", "/swagger-ui-bundle.js", router)
-	assert.Equal(t, 200, w3.Code)
+	w3 := performRequest(http.MethodGet, "/swagger-ui-bundle.js", router)
+	assert.Equal(t, http.StatusOK, w3.Code)
 	assert.Equal(t, w3.Header()["Content-Type"][0], "application/javascript")
 
-	w4 := performRequest("GET", "/doc.json", router)
-	assert.Equal(t, 200, w4.Code)
+	w4 := performRequest(http.MethodGet, "/doc.json", router)
+	assert.Equal(t, http.StatusOK, w4.Code)
 	assert.Equal(t, w4.Header()["Content-Type"][0], "application/json; charset=utf-8")
 }