From e12c0bf892ee590020c6ceebdd71ecb451739731 Mon Sep 17 00:00:00 2001
From: LoneWolf <122724872+FRLoneWolfFR@users.noreply.github.com>
Date: Sun, 26 Mar 2023 21:10:20 +0200
Subject: [PATCH] Add files via upload (#150)

---
 webapp.py | 39 ++++++++++++++++++++++++++++++++++-----
 1 file changed, 34 insertions(+), 5 deletions(-)

diff --git a/webapp.py b/webapp.py
index 88e6fb1..a87c78a 100644
--- a/webapp.py
+++ b/webapp.py
@@ -102,10 +102,39 @@ def ducky_main(request):
 
     return(response)
 
-def cleanup_text(buffer):
-    return_buffer = buffer.replace('+', ' ').replace('%0D%0A', '\n') + '\n'
-    #print(return_buffer)
-    return(return_buffer)
+_hexdig = '0123456789ABCDEFabcdef'
+_hextobyte = None
+
+def cleanup_text(string):
+    """unquote('abc%20def') -> b'abc def'."""
+    global _hextobyte
+
+    if not string:
+        return b''
+
+    if isinstance(string, str):
+        string = string.encode('utf-8')
+
+    bits = string.split(b'%')
+    if len(bits) == 1:
+        return string
+
+    res = [bits[0]]
+    append = res.append
+
+    if _hextobyte is None:
+        _hextobyte = {(a + b).encode(): bytes([int(a + b, 16)])
+                      for a in _hexdig for b in _hexdig}
+
+    for item in bits[1:]:
+        try:
+            append(_hextobyte[item[:2]])
+            append(item[2:])
+        except KeyError:
+            append(b'%')
+            append(item)
+
+    return b''.join(res).decode().replace('+',' ')
 
 web_app = WSGIApp()
 
@@ -211,4 +240,4 @@ async def startWebService():
     wsgiServer.start()
     while True:
         wsgiServer.update_poll()
-        await asyncio.sleep(0)
+        await asyncio.sleep(0)
\ No newline at end of file