[gnunet] branch master updated: only hash over PID, not full HELLO URL when checking for duplicate HELLO blocks

[gnunet]

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grothoff pushed a commit to branch master
in repository gnunet.

The following commit(s) were added to refs/heads/master by this push:
     new f818a3feb only hash over PID, not full HELLO URL when checking for 
duplicate HELLO blocks
f818a3feb is described below

commit f818a3feb7b354ad1dd2bc7abd903d710cc83f11
Author: Christian Grothoff <grothoff@gnunet.org>
AuthorDate: Sat Mar 12 04:29:16 2022 +0100

    only hash over PID, not full HELLO URL when checking for duplicate HELLO 
blocks
---
 src/dht/plugin_block_dht.c | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/src/dht/plugin_block_dht.c b/src/dht/plugin_block_dht.c
index 9ff67fa4e..5b6841a98 100644
--- a/src/dht/plugin_block_dht.c
+++ b/src/dht/plugin_block_dht.c
@@ -254,14 +254,23 @@ block_plugin_dht_check_reply (
     }
   case GNUNET_BLOCK_TYPE_DHT_URL_HELLO:
     {
-      struct GNUNET_HashCode phash;
+      struct GNUNET_HELLO_Builder *b;
+      struct GNUNET_PeerIdentity pid;
+      struct GNUNET_HashCode h_pid;
 
-      GNUNET_CRYPTO_hash (reply_block,
-                          reply_block_size,
-                          &phash);
+      b = GNUNET_HELLO_builder_from_block (reply_block,
+                                           reply_block_size);
+      GNUNET_assert (NULL != b);
+      GNUNET_HELLO_builder_iterate (b,
+                                    &pid,
+                                    NULL, NULL);
+      GNUNET_CRYPTO_hash (&pid,
+                          sizeof (pid),
+                          &h_pid);
+      GNUNET_HELLO_builder_free (b);
       if (GNUNET_YES ==
           GNUNET_BLOCK_GROUP_bf_test_and_set (group,
-                                              &phash))
+                                              &h_pid))
         return GNUNET_BLOCK_REPLY_OK_DUPLICATE;
       return GNUNET_BLOCK_REPLY_OK_MORE;
     }

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