[GNUnet-SVN] r21925 - gnunet/src/block

[gnunet]

Author: grothoff
Date: 2012-06-12 21:02:54 +0200 (Tue, 12 Jun 2012)
New Revision: 21925

Modified:
   gnunet/src/block/plugin_block_template.c
Log:
-adding block duplicating detection to template for block plugins

Modified: gnunet/src/block/plugin_block_template.c
===================================================================
--- gnunet/src/block/plugin_block_template.c    2012-06-12 18:52:34 UTC (rev 
21924)
+++ gnunet/src/block/plugin_block_template.c    2012-06-12 19:02:54 UTC (rev 
21925)
@@ -53,6 +53,27 @@
                                 size_t xquery_size, const void *reply_block,
                                 size_t reply_block_size)
 {
+  struct GNUNET_HashCode chash;
+  struct GNUNET_HashCode mhash;
+  /* FIXME: check validity first... */
+     
+  /* mandatory duplicate-detection code... */
+  if (NULL != bf)
+  {
+    GNUNET_CRYPTO_hash (reply_block, reply_block_size, &chash);
+    GNUNET_BLOCK_mingle_hash (&chash, bf_mutator, &mhash);
+    if (NULL != *bf)
+    {
+      if (GNUNET_YES == GNUNET_CONTAINER_bloomfilter_test (*bf, &mhash))
+        return GNUNET_BLOCK_EVALUATION_OK_DUPLICATE;
+    }
+    else
+    {
+      *bf = GNUNET_CONTAINER_bloomfilter_init (NULL, 8, 64 /* BLOOMFILTER_K 
*/);
+    }
+    GNUNET_CONTAINER_bloomfilter_add (*bf, &mhash);
+  }
+  /* FIXME: other stuff here... */
   return GNUNET_BLOCK_EVALUATION_TYPE_NOT_SUPPORTED;
 }