[GNUnet-SVN] [taler-twister] 10/11: do not use "tmp" buffer for response

[gnunet]

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marcello pushed a commit to branch master
in repository twister.

commit a1537b1d94677db84807a755f134b076d2b728e6
Author: Marcello Stanisci <address@hidden>
AuthorDate: Tue May 15 17:36:02 2018 +0200

    do not use "tmp" buffer for response
---
 src/twister/taler-twister-service.c | 69 ++++++++++++++++++-------------------
 1 file changed, 33 insertions(+), 36 deletions(-)

diff --git a/src/twister/taler-twister-service.c 
b/src/twister/taler-twister-service.c
index 8ace6f6..cbe58b7 100644
--- a/src/twister/taler-twister-service.c
+++ b/src/twister/taler-twister-service.c
@@ -542,7 +542,8 @@ curl_download_cb (void *ptr,
   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "Curl download proceeding\n");
 
-  GNUNET_assert (REQUEST_STATE_DOWNLOAD_STARTED == hr->state);
+  GNUNET_assert
+    (REQUEST_STATE_DOWNLOAD_STARTED == hr->state);
 
   if (hr->io_size - hr->io_len < total)
   {
@@ -553,6 +554,7 @@ curl_download_cb (void *ptr,
                       GNUNET_MAX (total + hr->io_len,
                                   hr->io_size * 2 + 1024));
   }
+
   GNUNET_memcpy (&hr->io_buf[hr->io_len],
                  ptr,
                  total);
@@ -581,6 +583,10 @@ curl_upload_cb (void *buf,
   size_t len = size * nmemb;
   size_t to_copy;
 
+  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+              "Uploader cb, size: %u.\n",
+              size);
+
   if (REQUEST_STATE_UPLOAD_STARTED != hr->state) 
   {
     GNUNET_break (0);
@@ -1177,9 +1183,6 @@ create_response (void *cls,
   (void) cls;
   (void) url;
 
-  char *body;
-  size_t body_len;
-
   if (NULL == hr)
   {
     GNUNET_break (0);
@@ -1196,7 +1199,9 @@ create_response (void *cls,
   /* continuing to process request */
   if (0 != *upload_data_size)
   {
-    GNUNET_assert (REQUEST_STATE_UPLOAD_STARTED == hr->state);
+    GNUNET_assert
+      (REQUEST_STATE_UPLOAD_STARTED == hr->state);
+
     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                 "Processing %u bytes UPLOAD\n",
                (unsigned int) *upload_data_size);
@@ -1226,49 +1231,41 @@ create_response (void *cls,
     return MHD_YES;
   }
 
-  /* Malform request body.  Note, this flag will be
-   * cleared only after having set the right malformed
-   * body lenght in the request headers.  */
-  if (GNUNET_YES == malform_upload)
-  {
-    TALER_LOG_DEBUG
-      ("Will (badly) truncate the request.\n");
-    malformed_size = GNUNET_CRYPTO_random_u32
-      (GNUNET_CRYPTO_QUALITY_WEAK, hr->io_len);
-    hr->io_len = malformed_size;
-  }
-
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "About to check flip path UL: %s\n",
-              flip_path_ul);
-
   /* Upload (from the *client*) finished,
    * generate curl request to the proxied service.  */
   if (NULL == hr->curl)
   {
+    /* Malform request body.  Note, this flag will be
+     * cleared only after having set the right malformed
+     * body lenght in the request headers.  */
+    if (GNUNET_YES == malform_upload)
+    {
+      TALER_LOG_DEBUG
+        ("Will (badly) truncate the request.\n");
+      malformed_size = GNUNET_CRYPTO_random_u32
+        (GNUNET_CRYPTO_QUALITY_WEAK, hr->io_len);
+      hr->io_len = malformed_size;
+    }
+  
     if ('\0' != flip_path_ul[0])
     {
       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                   "Going to modify the upload object (%s)\n",
                   hr->io_buf);
       json_t *tmp;
-
       tmp = json_loads (hr->io_buf,
                         JSON_REJECT_DUPLICATES,
                         NULL);
       flip_object (con,
                    tmp,
                    flip_path_ul);
-
-      /* No need to update 'io_length', as flipping a
+      /* No need to update 'io_len', as flipping a
        * bit does not change the data size.  */
       hr->io_buf = json_dumps (tmp,
                                JSON_COMPACT);
-
       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                   "Flipped (?) upload object (%s)\n",
                   hr->io_buf);
-
       json_decref (tmp);
     }
 
@@ -1482,14 +1479,13 @@ create_response (void *cls,
     modify_object (con, hr);
   }
 
-  body_len = hr->io_len;
-  body = hr->io_buf;
 
   if (NULL != hr->json)
   {
     TALER_LOG_DEBUG ("Parsing final JSON.\n");
-    body = json_dumps (hr->json, JSON_COMPACT);
-    body_len = strlen (body);
+    GNUNET_free (hr->io_buf);
+    hr->io_buf = json_dumps (hr->json, JSON_COMPACT);
+    hr->io_len = strlen (hr->io_buf);
     json_decref (hr->json);
   }
 
@@ -1500,17 +1496,16 @@ create_response (void *cls,
     TALER_LOG_DEBUG
       ("Will (badly) truncate the response.\n");
     fake_len = GNUNET_CRYPTO_random_u32
-      (GNUNET_CRYPTO_QUALITY_WEAK, body_len);
-    body_len = fake_len; 
+      (GNUNET_CRYPTO_QUALITY_WEAK, hr->io_len);
+    hr->io_len = fake_len; 
     malform = GNUNET_NO;
   }
 
   hr->response = MHD_create_response_from_buffer
-    (body_len,
-     body,
+    (hr->io_len,
+     hr->io_buf,
      MHD_RESPMEM_MUST_COPY);
 
-  GNUNET_free_non_null (body);
   for (header = hr->header_head;
        NULL != header;
        header = header->next)
@@ -1594,11 +1589,13 @@ mhd_completed_cb (void *cls,
     GNUNET_free (header->value);
     GNUNET_free (header);
   }
+
   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
               "Finished request for %s\n",
               hr->url);
+
   GNUNET_free (hr->url);
-  GNUNET_free_non_null (hr->io_buf);
+  GNUNET_free (hr->io_buf);
   GNUNET_free (hr);
   *con_cls = NULL;
 }

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