recurls: Use file to pass the data

Passing binary data via argument is dangrous.

src/recurls/recurls.py

@@ -64,6 +64,7 @@ class Recurls(object):
       response_header_file = tempfile.NamedTemporaryFile(delete=False).name
       response_file = tempfile.NamedTemporaryFile(delete=False).name
       hsts_file = tempfile.NamedTemporaryFile(delete=False).name
+      data_file = tempfile.NamedTemporaryFile(delete=False).name
       command_list = [
         self.curl,
         '--disable',
@@ -78,7 +79,11 @@ class Recurls(object):
         '--write-out', '%{json}'
       ]
       if data is not None:
-        command_list.extend(['--data-binary', data])
+        with open(data_file, 'wb') as fh:
+          if getattr(data, 'encode', None) is not None:
+            data = data.encode()
+          fh.write(data)
+        command_list.extend(['--data-binary', '@' + data_file])
       if certificate is not None:
         command_list.extend(['--cert', certificate])
       if allow_redirects:
@@ -146,6 +151,8 @@ class Recurls(object):
          header, value = line.split(':', 1)
          value = value.strip()
          response.headers.add_header(header, value)
+      with open(response_file, 'rb') as fh:
+        response.raw_bytes = fh.read()
       if response.headers.get('content-encoding') == 'gzip':
         with gzip.GzipFile(response_file) as fh:
           response.text = fh.read().decode()
@@ -202,6 +209,7 @@ class Recurls(object):
       os.unlink(request_header_file)
       os.unlink(response_file)
       os.unlink(hsts_file)
+      os.unlink(data_file)
     # kwargs:
     #  params - Dictionary, list of tuples or bytes to send in the query
     #           string for the Request.