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[GNUnet-SVN] r27390 - gnunet/src/mesh
From: |
gnunet |
Subject: |
[GNUnet-SVN] r27390 - gnunet/src/mesh |
Date: |
Fri, 7 Jun 2013 04:33:37 +0200 |
Author: bartpolot
Date: 2013-06-07 04:33:37 +0200 (Fri, 07 Jun 2013)
New Revision: 27390
Modified:
gnunet/src/mesh/gnunet-service-mesh-new.c
Log:
- refactor, check stack buffer size
Modified: gnunet/src/mesh/gnunet-service-mesh-new.c
===================================================================
--- gnunet/src/mesh/gnunet-service-mesh-new.c 2013-06-07 02:11:59 UTC (rev
27389)
+++ gnunet/src/mesh/gnunet-service-mesh-new.c 2013-06-07 02:33:37 UTC (rev
27390)
@@ -2074,6 +2074,72 @@
/**
+ * Modify the unicast message TID from global to local and send to client.
+ *
+ * @param t Tunnel on which to send the message.
+ * @param msg Message to modify and send.
+ */
+static void
+tunnel_send_client_ucast (struct MeshTunnel *t,
+ const struct GNUNET_MESH_Unicast *msg)
+{
+ struct GNUNET_MESH_Unicast *copy;
+ uint16_t size = ntohs (msg->header.size);
+ char cbuf[size];
+
+ if (size < sizeof (struct GNUNET_MESH_Unicast) +
+ sizeof (struct GNUNET_MessageHeader))
+ {
+ GNUNET_break_op (0);
+ return;
+ }
+ if (NULL == t->client)
+ {
+ GNUNET_break (0);
+ return;
+ }
+ copy = (struct GNUNET_MESH_Unicast *) cbuf;
+ memcpy (copy, msg, size);
+ copy->tid = htonl (t->local_tid_dest);
+ GNUNET_SERVER_notification_context_unicast (nc, t->client->handle,
+ ©->header, GNUNET_NO);
+}
+
+
+/**
+ * Modify the to_origin message TID from global to local and send to client.
+ *
+ * @param t Tunnel on which to send the message.
+ * @param msg Message to modify and send.
+ */
+static void
+tunnel_send_client_to_orig (struct MeshTunnel *t,
+ const struct GNUNET_MESH_ToOrigin *msg)
+{
+ struct GNUNET_MESH_ToOrigin *copy;
+ uint16_t size = ntohs (msg->header.size);
+ char cbuf[size];
+
+ if (size < sizeof (struct GNUNET_MESH_ToOrigin) +
+ sizeof (struct GNUNET_MessageHeader))
+ {
+ GNUNET_break_op (0);
+ return;
+ }
+ if (NULL == t->owner)
+ {
+ GNUNET_break (0);
+ return;
+ }
+ copy = (struct GNUNET_MESH_ToOrigin *) cbuf;
+ memcpy (cbuf, msg, size);
+ copy->tid = htonl (t->local_tid);
+ GNUNET_SERVER_notification_context_unicast (nc, t->owner->handle,
+ ©->header, GNUNET_NO);
+}
+
+
+/**
* @brief Re-initiate traffic to this peer if necessary.
*
* Check if there is traffic queued towards this peer
@@ -3347,16 +3413,11 @@
tunnel_reset_timeout (t);
if (t->dest == myid)
{
- if (NULL == t->client)
- {
- GNUNET_break (0);
- return GNUNET_OK;
- }
+ /* TODO signature verification */
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
" it's for us! sending to clients...\n");
GNUNET_STATISTICS_update (stats, "# unicast received", 1, GNUNET_NO);
- GNUNET_SERVER_notification_context_unicast (nc, t->client->handle,
- message, GNUNET_NO);
+ tunnel_send_client_ucast (t, msg);
tunnel_send_fwd_ack (t, GNUNET_MESSAGE_TYPE_MESH_UNICAST);
return GNUNET_OK;
}
@@ -3451,20 +3512,13 @@
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
" pid %u not seen yet, forwarding\n", pid);
- if (NULL != t->owner)
+ if (myid == t->id.oid)
{
- char cbuf[size];
- struct GNUNET_MESH_ToOrigin *copy;
-
+ /* TODO signature verification */
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
" it's for us! sending to clients...\n");
- /* TODO signature verification */
- memcpy (cbuf, message, size);
- copy = (struct GNUNET_MESH_ToOrigin *) cbuf;
- copy->tid = htonl (t->local_tid);
GNUNET_STATISTICS_update (stats, "# to origin received", 1, GNUNET_NO);
- GNUNET_SERVER_notification_context_unicast (nc, t->owner->handle,
- ©->header, GNUNET_NO);
+ tunnel_send_client_to_orig (t, msg);
tunnel_send_bck_ack (t, GNUNET_MESSAGE_TYPE_MESH_TO_ORIGIN);
return GNUNET_OK;
}
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