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Exploratory

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This commit is contained in:
orignal 2013-11-18 20:37:38 -05:00
parent 1377aa2706
commit 63e3a21291
4 changed files with 163 additions and 33 deletions
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96
NetDb.cpp
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@ -2,6 +2,7 @@
#include "Log.h"
#include "I2NPProtocol.h"
#include "Tunnel.h"
#include "RouterContext.h"
#include "NetDb.h"
namespace i2p
@ -11,18 +12,45 @@ namespace data
NetDb netdb;
NetDb::NetDb ()
NetDb::NetDb (): m_IsRunning (false), m_Thread (0)
{
Load ("netDb");
}
NetDb::~NetDb ()
{
Stop ();
for (auto l:m_LeaseSets)
delete l.second;
for (auto r:m_RouterInfos)
delete r.second;
}
void NetDb::Start ()
{
m_Thread = new std::thread (std::bind (&NetDb::Run, this));
}
void NetDb::Stop ()
{
if (m_Thread)
{
m_IsRunning = false;
m_Thread->join ();
delete m_Thread;
m_Thread = 0;
}
}
void NetDb::Run ()
{
m_IsRunning = true;
while (m_IsRunning)
{
sleep (10);
Explore ();
}
}
void NetDb::AddRouterInfo (uint8_t * buf, int len)
{
@ -78,10 +106,9 @@ namespace data
i2p::tunnel::InboundTunnel * inbound = i2p::tunnel::tunnels.GetNextInboundTunnel ();
if (inbound)
{
I2NPMessage * msg = i2p::CreateDatabaseLookupMsg (destination, inbound->GetGatewayIdentHash (),
inbound->GetGetwayTunnelID ());
I2NPMessage * msg = i2p::CreateDatabaseLookupMsg (destination, inbound->GetNextIdentHash (),
inbound->GetNextTunnelID ());
outbound->SendTunnelDataMsg (router, 0, msg);
i2p::DeleteI2NPMessage (msg);
}
else
LogPrint ("No inbound tunnels found");
@ -89,13 +116,64 @@ namespace data
else
LogPrint ("No outbound tunnels found");
}
const RouterInfo * NetDb::GetNextFloodfill () const
void NetDb::HandleDatabaseSearchReply (const uint8_t * key, const uint8_t * router)
{
if (!memcmp (m_Exploratory, key, 32))
{
if (m_RouterInfos.find (std::string ((const char *)router, 32)) == m_RouterInfos.end ())
LogPrint ("Found new router");
else
LogPrint ("Bayan");
}
else
RequestDestination (key, router);
}
void NetDb::Explore ()
{
i2p::tunnel::OutboundTunnel * outbound = i2p::tunnel::tunnels.GetNextOutboundTunnel ();
i2p::tunnel::InboundTunnel * inbound = i2p::tunnel::tunnels.GetNextInboundTunnel ();
if (outbound && inbound)
{
const RouterInfo * floodFill = GetRandomNTCPRouter (true);
if (floodFill)
{
LogPrint ("Exploring new routers ...");
CryptoPP::RandomNumberGenerator& rnd = i2p::context.GetRandomNumberGenerator ();
rnd.GenerateBlock (m_Exploratory, 32);
I2NPMessage * msg = i2p::CreateDatabaseLookupMsg (m_Exploratory, inbound->GetNextIdentHash (),
inbound->GetNextTunnelID (), true);
outbound->SendTunnelDataMsg (floodFill->GetIdentHash (), 0, msg);
}
}
}
const RouterInfo * NetDb::GetRandomNTCPRouter (bool floodfillOnly) const
{
CryptoPP::RandomNumberGenerator& rnd = i2p::context.GetRandomNumberGenerator ();
uint32_t ind = rnd.GenerateWord32 (0, m_RouterInfos.size () - 1), i = 0;
RouterInfo * last = nullptr;
for (auto it: m_RouterInfos)
if (it.second->IsFloodfill () && it.second->IsNTCP ())
return it.second;
return 0;
{
if (it.second->IsNTCP () && (!floodfillOnly || it.second->IsFloodfill ()))
last = it.second;
if (i >= ind) break;
else i++;
}
return last;
}
const RouterInfo * NetDb::GetRandomRouter () const
{
CryptoPP::RandomNumberGenerator& rnd = i2p::context.GetRandomNumberGenerator ();
uint32_t ind = rnd.GenerateWord32 (0, m_RouterInfos.size () - 1), i = 0;
for (auto it: m_RouterInfos)
{
if (i >= ind) return it.second;
else i++;
}
return nullptr;
}
}
}