Hack for parsing multipart/form-data from iOS

Well I have no idea~

Signed-off-by: Yuan Si <do4suki@gmail.com>

middleware/common.go

@@ -24,13 +24,6 @@ func CheckErr(err error) {
 func Common(ctx *gin.Context) {
 	ctx.Set("req_time", time.Now().Unix())
 
-	ctx.Request.ParseMultipartForm(0)
-	if len(ctx.PostForm("request_data")) == 0 {
-		// 弱智iOS客户端经常发些空的表单上来...
-		fmt.Println("Fuck you, iOS!")
-		ctx.Abort()
-	}
-
 	authorize := ctx.Request.Header.Get("Authorize")
 	if authorize == "" {
 		ctx.String(http.StatusForbidden, ErrorMsg)

middleware/multipart.go

@@ -0,0 +1,35 @@
+package middleware
+
+import (
+	"io"
+	"mime/multipart"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+)
+
+func ParseMultipartForm(ctx *gin.Context) {
+	if ctx.Request.Header.Get("OS") != "Android" {
+		// I don't know why mime.ParseMediaType() is failed
+		// mime.ParseMediaType(ctx.Request.Header.Get("Content-Type"))
+		boundary := strings.ReplaceAll(ctx.Request.Header.Get("Content-Type"), "multipart/form-data; boundary=", "")
+
+		var reqData []byte
+		mReader := multipart.NewReader(ctx.Request.Body, boundary)
+		for {
+			part, err := mReader.NextPart()
+			if err == io.EOF {
+				break
+			}
+			CheckErr(err)
+
+			data, err := io.ReadAll(part)
+			CheckErr(err)
+
+			reqData = data
+		}
+		ctx.Set("request_data", string(reqData))
+	}
+
+	ctx.Next()
+}