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/*
This file is part of GNUnet.
Copyright (C) 2011-2015 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
/**
* @file ats/gnunet-service-ats_feedback.c
* @brief ats service, handling of feedback
* @author Matthias Wachs
* @author Christian Grothoff
*/
#include "platform.h"
#include "gnunet-service-ats_plugins.h"
#include "gnunet-service-ats_feedback.h"
#include "ats.h"
/**
* Change the preference for a peer
*
* @param application the client sending this request
* @param peer the peer id
* @param scope the time interval for this feedback: [now - scope .. now]
* @param kind the preference kind to change
* @param score_abs the new preference score
*/
static void
preference_feedback (struct GNUNET_SERVER_Client *application,
const struct GNUNET_PeerIdentity *peer,
const struct GNUNET_TIME_Relative scope,
enum GNUNET_ATS_PreferenceKind kind,
float score_abs)
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received PREFERENCE FEEDBACK for peer `%s'\n",
GNUNET_i2s (peer));
GAS_plugin_notify_feedback (application,
peer,
scope,
kind,
score_abs);
}
/**
* Handle 'preference feedback' messages from clients.
*
* @param cls unused, NULL
* @param client client that sent the request
* @param message the request message
*/
void
GAS_handle_feedback (void *cls,
struct GNUNET_SERVER_Client *client,
const struct GNUNET_MessageHeader *message)
{
const struct FeedbackPreferenceMessage *msg;
const struct PreferenceInformation *pi;
uint16_t msize;
uint32_t nump;
uint32_t i;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received PREFERENCE_FEEDBACK message\n");
msize = ntohs (message->size);
if (msize < sizeof (struct FeedbackPreferenceMessage))
{
GNUNET_break (0);
GNUNET_SERVER_receive_done (client,
GNUNET_SYSERR);
return;
}
msg = (const struct FeedbackPreferenceMessage *) message;
nump = ntohl (msg->num_feedback);
if (msize !=
sizeof (struct FeedbackPreferenceMessage) +
nump * sizeof (struct PreferenceInformation))
{
GNUNET_break (0);
GNUNET_SERVER_receive_done (client,
GNUNET_SYSERR);
return;
}
if (GNUNET_NO ==
GNUNET_CONTAINER_multipeermap_contains (GSA_addresses,
&msg->peer))
{
GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
"Received PREFERENCE FEEDBACK for unknown peer `%s'\n",
GNUNET_i2s (&msg->peer));
return;
}
GNUNET_STATISTICS_update (GSA_stats,
"# preference feedbacks requests processed",
1,
GNUNET_NO);
pi = (const struct PreferenceInformation *) &msg[1];
for (i = 0; i < nump; i++)
preference_feedback (client,
&msg->peer,
GNUNET_TIME_relative_ntoh(msg->scope),
(enum GNUNET_ATS_PreferenceKind) ntohl (pi[i].preference_kind),
pi[i].preference_value);
GNUNET_SERVER_receive_done (client,
GNUNET_OK);
}
/* end of gnunet-service-ats_feedback.c */
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