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Merge pull request #708 from majestrate/reseed-from-floodfill

add reseed from floodfill option
pull/712/head
orignal 8 years ago committed by GitHub
parent
commit
facdf0ca9c
  1. 1
      Config.cpp
  2. 74
      NetDb.cpp
  3. 9
      NetDb.h
  4. 7
      NetDbRequests.cpp
  5. 6
      Tag.h

1
Config.cpp

@ -158,6 +158,7 @@ namespace config { @@ -158,6 +158,7 @@ namespace config {
options_description reseed("Reseed options");
reseed.add_options()
("reseed.verify", value<bool>()->default_value(false), "Verify .su3 signature")
("reseed.floodfill", value<std::string>()->default_value(""), "Path to router info of floodfill to reseed from")
("reseed.file", value<std::string>()->default_value(""), "Path to .su3 file")
("reseed.urls", value<std::string>()->default_value(
"https://reseed.i2p-projekt.de/,"

74
NetDb.cpp

@ -14,6 +14,7 @@ @@ -14,6 +14,7 @@
#include "RouterContext.h"
#include "Garlic.h"
#include "NetDb.h"
#include "Config.h"
using namespace i2p::transport;
@ -23,7 +24,7 @@ namespace data @@ -23,7 +24,7 @@ namespace data
{
NetDb netdb;
NetDb::NetDb (): m_IsRunning (false), m_Thread (nullptr), m_Reseeder (nullptr), m_Storage("netDb", "r", "routerInfo-", "dat"), m_HiddenMode(false)
NetDb::NetDb (): m_IsRunning (false), m_Thread (nullptr), m_Reseeder (nullptr), m_Storage("netDb", "r", "routerInfo-", "dat"), m_FloodfillBootstrap(nullptr), m_HiddenMode(false)
{
}
@ -140,6 +141,8 @@ namespace data @@ -140,6 +141,8 @@ namespace data
LogPrint(eLogError, "NetDb: no known routers, reseed seems to be totally failed");
break;
}
else // we have peers now
m_FloodfillBootstrap = nullptr;
if (numRouters < 2500 || ts - lastExploratory >= 90)
{
numRouters = 800/numRouters;
@ -296,12 +299,61 @@ namespace data @@ -296,12 +299,61 @@ namespace data
m_Reseeder->LoadCertificates (); // we need certificates for SU3 verification
}
int reseedRetries = 0;
// try reseeding from floodfill first if specified
std::string riPath;
if(i2p::config::GetOption("reseed.floodfill", riPath)) {
auto ri = std::make_shared<RouterInfo>(riPath);
if (ri->IsFloodfill()) {
const uint8_t * riData = ri->GetBuffer();
int riLen = ri->GetBufferLen();
if(!i2p::data::netdb.AddRouterInfo(riData, riLen)) {
// bad router info
LogPrint(eLogError, "NetDb: bad router info");
return;
}
m_FloodfillBootstrap = ri;
ReseedFromFloodfill(*ri);
// don't try reseed servers if trying to boostrap from floodfill
return;
}
}
while (reseedRetries < 10 && !m_Reseeder->ReseedNowSU3 ())
reseedRetries++;
if (reseedRetries >= 10)
LogPrint (eLogWarning, "NetDb: failed to reseed after 10 attempts");
}
void NetDb::ReseedFromFloodfill(const RouterInfo & ri, int numRouters, int numFloodfills)
{
LogPrint(eLogInfo, "NetDB: reseeding from floodfill ", ri.GetIdentHashBase64());
std::vector<std::shared_ptr<i2p::I2NPMessage> > requests;
i2p::data::IdentHash ourIdent = i2p::context.GetIdentHash();
i2p::data::IdentHash ih = ri.GetIdentHash();
i2p::data::IdentHash randomIdent;
// make floodfill lookups
while(numFloodfills > 0) {
randomIdent.Randomize();
auto msg = i2p::CreateRouterInfoDatabaseLookupMsg(randomIdent, ourIdent, 0, false);
requests.push_back(msg);
numFloodfills --;
}
// make regular router lookups
while(numRouters > 0) {
randomIdent.Randomize();
auto msg = i2p::CreateRouterInfoDatabaseLookupMsg(randomIdent, ourIdent, 0, true);
requests.push_back(msg);
numRouters --;
}
// send them off
i2p::transport::transports.SendMessages(ih, requests);
}
bool NetDb::LoadRouterInfo (const std::string & path)
{
auto r = std::make_shared<RouterInfo>(path);
@ -499,6 +551,21 @@ namespace data @@ -499,6 +551,21 @@ namespace data
}
}
void NetDb::RequestDestinationFrom (const IdentHash& destination, const IdentHash & from, bool exploritory, RequestedDestination::RequestComplete requestComplete)
{
auto dest = m_Requests.CreateRequest (destination, exploritory, requestComplete); // non-exploratory
if (!dest)
{
LogPrint (eLogWarning, "NetDb: destination ", destination.ToBase64(), " is requested already");
return;
}
LogPrint(eLogInfo, "NetDb: destination ", destination.ToBase64(), " being requested directly from ", from.ToBase64());
// direct
transports.SendMessage (from, dest->CreateRequestMessage (nullptr, nullptr));
}
void NetDb::HandleDatabaseStoreMsg (std::shared_ptr<const I2NPMessage> m)
{
const uint8_t * buf = m->GetPayload ();
@ -664,7 +731,7 @@ namespace data @@ -664,7 +731,7 @@ namespace data
// no more requests for detination possible. delete it
m_Requests.RequestComplete (ident, nullptr);
}
else
else if(!m_FloodfillBootstrap)
LogPrint (eLogWarning, "NetDb: requested destination for ", key, " not found");
// try responses
@ -681,6 +748,9 @@ namespace data @@ -681,6 +748,9 @@ namespace data
{
// router with ident not found or too old (1 hour)
LogPrint (eLogDebug, "NetDb: found new/outdated router. Requesting RouterInfo ...");
if(m_FloodfillBootstrap)
RequestDestinationFrom(router, m_FloodfillBootstrap->GetIdentHash(), true);
else
RequestDestination (router);
}
else

9
NetDb.h

@ -60,6 +60,7 @@ namespace data @@ -60,6 +60,7 @@ namespace data
std::shared_ptr<RouterProfile> FindRouterProfile (const IdentHash& ident) const;
void RequestDestination (const IdentHash& destination, RequestedDestination::RequestComplete requestComplete = nullptr);
void RequestDestinationFrom (const IdentHash& destination, const IdentHash & from, bool exploritory, RequestedDestination::RequestComplete requestComplete = nullptr);
void HandleDatabaseStoreMsg (std::shared_ptr<const I2NPMessage> msg);
void HandleDatabaseSearchReplyMsg (std::shared_ptr<const I2NPMessage> msg);
@ -98,6 +99,9 @@ namespace data @@ -98,6 +99,9 @@ namespace data
void VisitRouterInfos(RouterInfoVisitor v);
/** visit N random router that match using filter, then visit them with a visitor, return number of RouterInfos that were visited */
size_t VisitRandomRouterInfos(RouterInfoFilter f, RouterInfoVisitor v, size_t n);
private:
void Load ();
@ -110,6 +114,8 @@ namespace data @@ -110,6 +114,8 @@ namespace data
void ManageRequests ();
void ManageLookupResponses ();
void ReseedFromFloodfill(const RouterInfo & ri, int numRouters=40, int numFloodfills=20);
template<typename Filter>
std::shared_ptr<const RouterInfo> GetRandomRouter (Filter filter) const;
@ -135,6 +141,9 @@ namespace data @@ -135,6 +141,9 @@ namespace data
friend class NetDbRequests;
NetDbRequests m_Requests;
/** router info we are bootstrapping from or nullptr if we are not currently doing that*/
std::shared_ptr<RouterInfo> m_FloodfillBootstrap;
std::map<IdentHash, std::pair<std::vector<IdentHash>, uint64_t> > m_LookupResponses; // ident->(closest FFs, timestamp)
/** true if in hidden mode */

7
NetDbRequests.cpp

@ -11,9 +11,14 @@ namespace data @@ -11,9 +11,14 @@ namespace data
std::shared_ptr<I2NPMessage> RequestedDestination::CreateRequestMessage (std::shared_ptr<const RouterInfo> router,
std::shared_ptr<const i2p::tunnel::InboundTunnel> replyTunnel)
{
auto msg = i2p::CreateRouterInfoDatabaseLookupMsg (m_Destination,
std::shared_ptr<I2NPMessage> msg;
if(replyTunnel)
msg = i2p::CreateRouterInfoDatabaseLookupMsg (m_Destination,
replyTunnel->GetNextIdentHash (), replyTunnel->GetNextTunnelID (), m_IsExploratory,
&m_ExcludedPeers);
else
msg = i2p::CreateRouterInfoDatabaseLookupMsg(m_Destination, i2p::context.GetIdentHash(), 0, m_IsExploratory, &m_ExcludedPeers);
if(router)
m_ExcludedPeers.insert (router->GetIdentHash ());
m_CreationTime = i2p::util::GetSecondsSinceEpoch ();
return msg;

6
Tag.h

@ -11,6 +11,7 @@ @@ -11,6 +11,7 @@
#include <boost/static_assert.hpp>
#include <string.h>
#include <openssl/rand.h>
#include "Base.h"
namespace i2p {
@ -50,6 +51,11 @@ public: @@ -50,6 +51,11 @@ public:
memset(m_Buf, c, sz);
}
void Randomize()
{
RAND_bytes(m_Buf, sz);
}
std::string ToBase64 () const
{
char str[sz*2];

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