[#514] Add support for ignoring payload params in multipart/form-data

1 files changed, 27 insertions, 0 deletions

diff --git a/libmproxy/utils.py b/libmproxy/utils.py
index 51f2dc26..b84c589a 100644
--- a/libmproxy/utils.py
+++ b/libmproxy/utils.py
@@ -69,6 +69,33 @@ def urlencode(s):
     return urllib.urlencode(s, False)
 
 
+def multipartdecode(hdrs, content):
+    """
+        Takes a multipart boundary encoded string and returns list of (key, value) tuples.
+    """
+    v = hdrs.get_first("content-type")
+    if v:
+        v = parse_content_type(v)
+        if not v:
+            return []
+        boundary = v[2].get("boundary")
+        if not boundary:
+            return []
+
+        rx = re.compile(r'\bname="([^"]+)"')
+        r = []
+
+        for i in content.split("--" + boundary):
+            parts = i.splitlines()
+            if len(parts) > 1 and parts[0][0:2] != "--":
+                match = rx.search(parts[1])
+                if match:
+                    key = match.group(1)
+                    value = "".join(parts[3+parts[2:].index(""):])
+                    r.append((key, value))
+        return r
+    return []
+
 def pretty_size(size):
     suffixes = [
         ("B",   2**10),