static void
process_hello (void *cls,
const struct GNUNET_MessageHeader *message)
{
struct PeerContext *p = cls;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received (my) `%s' from transport service\n", "HELLO");
GNUNET_assert (message != NULL);
p->hello = GNUNET_copy_message (message);
if ((p == &p1) && (NULL == p2.oh))
p2.oh = GNUNET_TRANSPORT_offer_hello (p2.cfg,
message,
&offer_hello_done,
&p2);
if ((p == &p2) && (NULL == p1.oh))
p1.oh = GNUNET_TRANSPORT_offer_hello (p1.cfg,
message,
&offer_hello_done,
&p1);
if ((p == &p1) && (p2.hello != NULL) && (NULL == p1.oh) )
p1.oh = GNUNET_TRANSPORT_offer_hello (p1.cfg,
p2.hello,
&offer_hello_done,
&p1);
if ((p == &p2) && (p1.hello != NULL) && (NULL == p2.oh) )
p2.oh = GNUNET_TRANSPORT_offer_hello (p2.cfg,
p1.hello,
&offer_hello_done,
&p2);
}
/**
* Caches the HELLO of the given peer. Updates the HELLO if it was already
* cached before
*
* @param peer_id the peer identity of the peer whose HELLO has to be cached
* @param hello the HELLO message
*/
void
GST_cache_add_hello (const unsigned int peer_id,
const struct GNUNET_MessageHeader *hello)
{
struct CacheEntry *entry;
if (NULL == cache)
return;
entry = cache_lookup (peer_id);
if (NULL == entry)
entry = add_entry (peer_id);
GNUNET_free_non_null (entry->hello);
entry->hello = GNUNET_copy_message (hello);
}
/**
* Callback to relay the reply msg of a forwarded operation back to the client
*
* @param cls ForwardedOperationContext
* @param msg the message to relay
*/
void
GST_forwarded_operation_reply_relay (void *cls,
const struct GNUNET_MessageHeader *msg)
{
struct ForwardedOperationContext *fopc = cls;
struct GNUNET_MessageHeader *dup_msg;
uint16_t msize;
msize = ntohs (msg->size);
LOG_DEBUG ("Relaying message with type: %u, size: %u\n", ntohs (msg->type),
msize);
dup_msg = GNUNET_copy_message (msg);
GST_queue_message (fopc->client, dup_msg);
GNUNET_SERVER_client_drop (fopc->client);
GNUNET_SCHEDULER_cancel (fopc->timeout_task);
GNUNET_CONTAINER_DLL_remove (fopcq_head, fopcq_tail, fopc);
GNUNET_free (fopc);
}
static void
get_hello (void *cb_cls, const struct GNUNET_MessageHeader *message)
{
struct PeerContext *p = cb_cls;
struct GNUNET_PeerIdentity hello_id;
GNUNET_assert (message != NULL);
GNUNET_assert (GNUNET_OK ==
GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *)
message, &hello_id));
GNUNET_assert (0 == memcmp (&hello_id, &p->id, sizeof (hello_id)));
GNUNET_free_non_null (p->hello);
p->hello = (struct GNUNET_HELLO_Message *) GNUNET_copy_message (message);
if (NULL != p->start_cb)
{
GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "transport-testing",
"Peer %u (`%s') successfully started\n", p->no,
GNUNET_i2s (&p->id));
p->start_cb (p, p->cb_cls);
p->start_cb = NULL;
}
}
/**
* Function called by the transport for each received message.
*
* @param cls closure, const char* with the name of the plugin we received the message from
* @param address address and (claimed) identity of the other peer
* @param message the message, NULL if we only care about
* learning about the delay until we should receive again
* @param session identifier used for this session (NULL for plugins
* that do not offer bi-directional communication to the sender
* using the same "connection")
* @return how long the plugin should wait until receiving more data
* (plugins that do not support this, can ignore the return value)
*/
struct GNUNET_TIME_Relative
GST_receive_callback (void *cls,
const struct GNUNET_HELLO_Address *address,
struct GNUNET_ATS_Session *session,
const struct GNUNET_MessageHeader *message)
{
const char *plugin_name = cls;
struct GNUNET_TIME_Relative ret;
uint16_t type;
ret = GNUNET_TIME_UNIT_ZERO;
if (NULL == message)
goto end;
type = ntohs (message->type);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received message with type %u from peer `%s'\n",
type,
GNUNET_i2s (&address->peer));
GNUNET_STATISTICS_update (GST_stats,
gettext_noop ("# bytes total received"),
ntohs (message->size),
GNUNET_NO);
GST_neighbours_notify_data_recv (address,
message);
switch (type)
{
case GNUNET_MESSAGE_TYPE_HELLO_LEGACY:
/* Legacy HELLO message, discard */
return ret;
case GNUNET_MESSAGE_TYPE_HELLO:
if (GNUNET_OK != GST_validation_handle_hello (message))
{
GNUNET_break_op (0);
GST_blacklist_abort_matching (address,
session);
}
return ret;
case GNUNET_MESSAGE_TYPE_TRANSPORT_PING:
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Processing PING from `%s'\n",
GST_plugins_a2s (address));
if (GNUNET_OK !=
GST_validation_handle_ping (&address->peer,
message,
address,
session))
{
GST_blacklist_abort_matching (address,
session);
kill_session (plugin_name,
session);
}
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_PONG:
GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
"Processing PONG from `%s'\n",
GST_plugins_a2s (address));
if (GNUNET_OK != GST_validation_handle_pong (&address->peer, message))
{
GNUNET_break_op (0);
GST_blacklist_abort_matching (address,
session);
kill_session (plugin_name, session);
}
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_SYN:
/* Do blacklist check if communication with this peer is allowed */
(void) GST_blacklist_test_allowed (&address->peer,
NULL,
&connect_bl_check_cont,
GNUNET_copy_message (message),
address,
session);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_SYN_ACK:
if (GNUNET_OK !=
GST_neighbours_handle_session_syn_ack (message,
address,
session))
{
GST_blacklist_abort_matching (address, session);
kill_session (plugin_name, session);
}
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_ACK:
if (GNUNET_OK !=
GST_neighbours_handle_session_ack (message,
address,
session))
{
GNUNET_break_op(0);
GST_blacklist_abort_matching (address, session);
kill_session (plugin_name, session);
}
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_DISCONNECT:
GST_neighbours_handle_disconnect_message (&address->peer,
message);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_QUOTA:
GST_neighbours_handle_quota_message (&address->peer,
message);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE:
GST_neighbours_keepalive (&address->peer,
message);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE_RESPONSE:
GST_neighbours_keepalive_response (&address->peer,
message);
break;
default:
/* should be payload */
GNUNET_STATISTICS_update (GST_stats,
gettext_noop ("# bytes payload received"),
ntohs (message->size),
GNUNET_NO);
ret = process_payload (address,
session,
message);
break;
}
end:
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Allowing receive from peer %s to continue in %s\n",
GNUNET_i2s (&address->peer),
GNUNET_STRINGS_relative_time_to_string (ret,
GNUNET_YES));
return ret;
}
