fix: really fix overrun added in e49a477

Author: zugz

other/bootstrap_daemon/docker/tox-bootstrapd.sha256

@@ -1 +1 @@
-8a21d15ab133d9cb6dea68a536ed1f3d9e7a5ae81c8ea55e315d3a111c857476  /usr/local/bin/tox-bootstrapd
+ea227a21dcaed2f54d61bd9175c6deb02480ebd894ebd589061556a1708c0c9f  /usr/local/bin/tox-bootstrapd

toxcore/DHT.c

@@ -1035,7 +1035,7 @@ void set_announce_node(DHT *dht, const uint8_t *public_key)
         index = LCLIENT_LENGTH - 1;
     }
 
-    set_announce_node_in_list(dht->close_clientlist + index * LCLIENT_NODES, LCLIENT_LENGTH, public_key);
+    set_announce_node_in_list(dht->close_clientlist + index * LCLIENT_NODES, LCLIENT_NODES, public_key);
 
     for (int32_t i = 0; i < dht->num_friends; ++i) {
         set_announce_node_in_list(dht->friends_list[i].client_list, MAX_FRIEND_CLIENTS, public_key);

toxcore/DHT_test.cc

@@ -185,4 +185,47 @@ TEST(Request, CreateAndParse)
     }
 }
 
+TEST(AnnounceNodes, SetAndTest)
+{
+    Logger *log = logger_new();
+    Mono_Time *mono_time = mono_time_new(nullptr, nullptr);
+    const Random *rng = system_random();
+    const Network *ns = system_network();
+    Networking_Core *net = new_networking_no_udp(log, ns);
+    DHT *dht = new_dht(log, rng, ns, mono_time, net, true, true);
+    ASSERT_NE(dht, nullptr);
+
+    uint8_t pk_data[CRYPTO_PUBLIC_KEY_SIZE];
+    memcpy(pk_data, dht_get_self_public_key(dht), sizeof(pk_data));
+    PublicKey self_pk = to_array(pk_data);
+
+    PublicKey pk1 = random_pk(rng);
+    ASSERT_NE(pk1, self_pk);
+
+    // Test with maximally close key to self
+    pk_data[CRYPTO_PUBLIC_KEY_SIZE - 1] = ~pk_data[CRYPTO_PUBLIC_KEY_SIZE - 1];
+    PublicKey pk2 = to_array(pk_data);
+    ASSERT_NE(pk2, pk1);
+
+    IP_Port ip_port = {0};
+    ip_port.ip.family = net_family_ipv4();
+
+    set_announce_node(dht, pk1.data());
+    set_announce_node(dht, pk2.data());
+
+    EXPECT_TRUE(addto_lists(dht, &ip_port, pk1.data()));
+    EXPECT_TRUE(addto_lists(dht, &ip_port, pk2.data()));
+
+    Node_format nodes[MAX_SENT_NODES];
+    EXPECT_EQ(0, get_close_nodes(dht, self_pk.data(), nodes, net_family_unspec(), true, true));
+    set_announce_node(dht, pk1.data());
+    set_announce_node(dht, pk2.data());
+    EXPECT_EQ(2, get_close_nodes(dht, self_pk.data(), nodes, net_family_unspec(), true, true));
+
+    kill_dht(dht);
+    kill_networking(net);
+    mono_time_free(mono_time);
+    logger_kill(log);
+}
+
 }  // namespace