添加对当分块内容存在不可见字符时不添加注释的判断

src/main/java/burp/Transfer.java

@@ -98,7 +98,8 @@ public static byte[] splitReqBody(byte[] reqBody,int minChunkedLen,int maxChunke
         List<byte[]> bytes_list = Util.getByteRandomLenList(reqBody,minChunkedLen,maxChunkedLen);
         byte[] byte_encoding_body = new byte[0];
         for(byte[] b:bytes_list){
-            if(isComment){
+            // 当注释开启，同时不存在不可见字符时，才会添加注释
+            if(isComment && !Util.isIncludeInviChar(reqBody)){
                 int commentLen = Util.getRandomNum(minCommentLen,maxCommentLen);
                 String comment = String.format("%s;%s",Util.decimalToHex(b.length),Util.getRandomString(commentLen));
                 byte_encoding_body = joinByteArray(byte_encoding_body,comment.getBytes());

src/main/java/burp/Util.java

@@ -143,6 +143,24 @@ public static int hexToDecimal(String hex){
     }
 
 
+    /**
+     * 判断数据中是否包含不可见字符
+     * @param data 要判断的数据
+     * @return 是否包含不可见字符
+     */
+    public static boolean isIncludeInviChar(byte[] data){
+        for(int i=0;i<data.length;i++){
+            int value = Integer.valueOf(data[i]);
+
+            if(value < 0 || value > 127){
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+
     public static void main(String[] args) {
         byte[] ewee = "wewewe.w".getBytes();
         List<byte[]> xssd = getByteRandomLenList(ewee,1,4);

src/main/test/StringTest.java

@@ -0,0 +1,9 @@
+import burp.Util;
+
+public class StringTest {
+    public static void main(String[] args) {
+        String data = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!\"#$%&\\'()*+,-./:;<=>?@[\\\\]^_`{|}~ \\t\\n";
+        data = "\r\n";
+        System.out.println(Util.isIncludeInviChar(data.getBytes()));
+    }
+}