libmicrohttpd

commit bbc57f9386bbd30e21320c59c6b76f91448fab0f
parent ba63b33aea997cdc94b379d29be203f39a32c4b6
Author: Evgeny Grin (Karlson2k) <k2k@narod.ru>
Date:   Wed, 15 Sep 2021 13:32:47 +0300

postprocessor: fixed empty key processing

Diffstat:
M
src/microhttpd/postprocessor.c
 | 
12
++++++++++++

1 file changed, 12 insertions(+), 0 deletions(-)
diff --git a/src/microhttpd/postprocessor.c b/src/microhttpd/postprocessor.c
@@ -521,6 +521,12 @@ post_process_urlencoded (struct MHD_PostProcessor *pp,
       case '=':
         /* Case: 'key=' */
         end_key = &post_data[poff];
+        if ((start_key == end_key) && (0 == pp->buffer_pos))
+        {
+          /* Empty key with value */
+          pp->state = PP_Error;
+          continue;
+        }
         poff++;
         pp->state = PP_ProcessValue;
         break;
@@ -530,6 +536,12 @@ post_process_urlencoded (struct MHD_PostProcessor *pp,
         mhd_assert (NULL == start_value);
         mhd_assert (NULL == end_value);
         poff++;
+        if ((start_key == end_key) && (0 == pp->buffer_pos))
+        {
+          /* Empty key without value */
+          start_key = NULL;
+          continue;
+        }
         pp->state = PP_Callback;
         break;
       case '\n':