twister

commit 25da33b51ff2fb1ba029d4baab233c83c7ea930c
parent 3ea91942f5dd739ccccee2ff2d996081003d654a
Author: Marcello Stanisci <stanisci.m@gmail.com>
Date:   Mon,  4 Jun 2018 10:54:02 +0200

Try flipping index until a good one is found.

Diffstat:
M
src/twister/taler-twister-service.c
 | 
17
+++++++++++------

1 file changed, 11 insertions(+), 6 deletions(-)
diff --git a/src/twister/taler-twister-service.c b/src/twister/taler-twister-service.c
@@ -957,17 +957,22 @@ flip_object (struct MHD_Connection *con,
 
   #warning When free this?
   current_value_flip = GNUNET_strdup (current_value);
-  crockford_index = GNUNET_CRYPTO_random_u32
-    (GNUNET_CRYPTO_QUALITY_WEAK,
-     CROCKFORD_MAX_INDEX + 1);
 
   flip_index = GNUNET_CRYPTO_random_u32
     (GNUNET_CRYPTO_QUALITY_WEAK,
      strlen (current_value_flip));
+  do{
+    crockford_index = GNUNET_CRYPTO_random_u32
+      (GNUNET_CRYPTO_QUALITY_STRONG,
+       CROCKFORD_MAX_INDEX + 1);
+
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                "Try flipping with Crockford index: %u\n",
+                crockford_index);
+  }
+  while (current_value_flip[flip_index] ==
+    crockford_chars[crockford_index]);
 
-  /* flip the LSB.  WARNING: if the flipping does NOT
-   * reach a Crockford-friendly char, then the test cases
-   * will get disoriented by "400 Bad request" responses.  */
   current_value_flip[flip_index] =
     crockford_chars[crockford_index];