[GNUnet-SVN] [taler-twister] 16/34: fix proxied response headers.

[gnunet]

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marcello pushed a commit to branch master
in repository twister.

commit b6b7f4616e7c933b3ed4520c64e8d281fb17f8d7
Author: Marcello Stanisci <address@hidden>
AuthorDate: Thu Mar 8 15:01:16 2018 +0100

    fix proxied response headers.
---
 src/twister/taler-twister-service.c | 62 ++++++++++++++++++++-----------------
 1 file changed, 34 insertions(+), 28 deletions(-)

diff --git a/src/twister/taler-twister-service.c 
b/src/twister/taler-twister-service.c
index 929a087..d27257f 100644
--- a/src/twister/taler-twister-service.c
+++ b/src/twister/taler-twister-service.c
@@ -132,6 +132,11 @@ struct HttpRequest
   char *io_buf;
 
   /**
+   * Hold the response obtained by modifying the original one.
+   */
+  struct MHD_Response *mod_response;
+
+  /**
    * MHD response object for this request.
    */
   struct MHD_Response *response;
@@ -1066,15 +1071,13 @@ create_response (void *cls,
                "Still waiting for response to be ready\n");
     return MHD_YES;
   }
-  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
-              "Queueing response with MHD\n");
   if (0 != hack_response_code)
   {
     hr->response_code = hack_response_code;
     hack_response_code = 0; /* reset for next request */
   }
 
-  /* Empty the object pointed by `delete_path` only if
+  /* Empty the object pointed by `delete_path` ONLY IF
      it is found within this response, otherwise it leaves
      the response untouched. */
   if ('\0' != delete_path[0])
@@ -1084,14 +1087,8 @@ create_response (void *cls,
     json_t *cur;
     json_error_t error;
     char *token_path;
-    char *mod_response;
+    char *mod_body;
     unsigned int index;
-    /* XXX: Who destroys the unused response? */
-
-    if (NULL == MHD_lookup_connection_value
-        (con, MHD_HEADER_KIND, "application/json"))
-      /* No JSON header, but will try to parse it anyway. */
-      TALER_LOG_WARNING ("Response is not JSON (?)\n");
 
     if (NULL == (parsed_response = json_loadb
       (hr->io_buf, hr->io_len, JSON_DECODE_ANY, &error)))
@@ -1155,25 +1152,29 @@ create_response (void *cls,
                                  hr->response);
     }
 
-    TALER_LOG_INFO ("Emptying object '%s'\n",
-                    json_dumps (element, JSON_COMPACT));
-    mod_response = json_dumps (parsed_response, JSON_COMPACT);
-
-    json_decref (parsed_response);
-
-   /* We only reset once a empty-able object has
-      been found.  This way, it is possible to call this
-      API way in advance respect to the response which
-      is to be transformed. */
-   delete_path[0] = '\0';
-   json_decref (parsed_response); 
-   return MHD_queue_response
-     (con, hr->response_code,
-      MHD_create_response_from_buffer (strlen (mod_response),
-                                       mod_response,
-                                       MHD_RESPMEM_MUST_COPY));
+    mod_body = json_dumps (parsed_response, JSON_COMPACT);
+
+    hr->mod_response = MHD_create_response_from_buffer
+      (strlen (mod_body),
+       mod_body,
+       MHD_RESPMEM_MUST_COPY);
+    json_decref (parsed_response); 
+    delete_path[0] = '\0';
+ 
+    struct HttpResponseHeader *header;
+    for (header = hr->header_head;
+         NULL != header;
+         header = header->next)
+      GNUNET_break
+        (MHD_YES == MHD_add_response_header (hr->mod_response,
+                                             header->type,
+                                             header->value));
+    return MHD_queue_response (con,
+                               hr->response_code,
+                               hr->mod_response);
   }
-  /* Response is untouched. */ 
+
+  /* response might have been modified. */
   return MHD_queue_response (con,
                              hr->response_code,
                              hr->response);
@@ -1223,6 +1224,11 @@ mhd_completed_cb (void *cls,
     hr->curl = NULL;
     hr->io_len = 0;
   }
+
+  if ((NULL != hr->mod_response))
+    /* Destroy hacked responses. */
+    MHD_destroy_response (hr->mod_response);
+
   if ( (NULL != hr->response) &&
        (curl_failure_response != hr->response) )
     /* Destroy non-error responses... (?) */

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