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Synchronize IKEv1 DPD sequence numbers

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This commit is contained in:
Martin Willi 2012-01-20 12:23:46 +01:00
parent fd6fbf1764
commit fed5c33440
1 changed files with 30 additions and 0 deletions
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30
src/libcharon/plugins/ha/ha_ike.c
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@ -323,6 +323,36 @@ METHOD(listener_t, message_hook, bool,
}
}
}
if (plain && ike_sa->get_version(ike_sa) == IKEV1 &&
message->get_exchange_type(message) == INFORMATIONAL_V1)
{
ha_message_t *m;
notify_payload_t *notify;
chunk_t data;
u_int32_t seq;
notify = message->get_notify(message, DPD_R_U_THERE);
if (notify)
{
data = notify->get_notification_data(notify);
if (data.len == 4)
{
seq = untoh32(data.ptr);
if (incoming)
{
m = ha_message_create(HA_IKE_MID_RESPONDER);
}
else
{
m = ha_message_create(HA_IKE_MID_INITIATOR);
}
m->add_attribute(m, HA_IKE_ID, ike_sa->get_id(ike_sa));
m->add_attribute(m, HA_MID, seq + 1);
this->socket->push(this->socket, m);
this->cache->cache(this->cache, ike_sa, m);
}
}
}
return TRUE;
}