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Database lookups from ECIES destinations

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orignal 2020-09-19 21:15:42 -04:00
parent 024c29b180
commit 09fdb068d2
5 changed files with 34 additions and 9 deletions
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18
libi2pd/I2NPProtocol.cpp
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@ -171,7 +171,8 @@ namespace i2p
std::shared_ptr<I2NPMessage> CreateLeaseSetDatabaseLookupMsg (const i2p::data::IdentHash& dest,
const std::set<i2p::data::IdentHash>& excludedFloodfills,
std::shared_ptr<const i2p::tunnel::InboundTunnel> replyTunnel, const uint8_t * replyKey, const uint8_t * replyTag)
std::shared_ptr<const i2p::tunnel::InboundTunnel> replyTunnel, const uint8_t * replyKey,
const uint8_t * replyTag, bool replyECIES)
{
int cnt = excludedFloodfills.size ();
auto m = cnt > 7 ? NewI2NPMessage () : NewI2NPShortMessage ();
@ -180,7 +181,8 @@ namespace i2p
buf += 32;
memcpy (buf, replyTunnel->GetNextIdentHash (), 32); // reply tunnel GW
buf += 32;
*buf = DATABASE_LOOKUP_DELIVERY_FLAG | DATABASE_LOOKUP_ENCRYPTION_FLAG | DATABASE_LOOKUP_TYPE_LEASESET_LOOKUP; // flags
*buf = DATABASE_LOOKUP_DELIVERY_FLAG | DATABASE_LOOKUP_TYPE_LEASESET_LOOKUP; // flags
*buf |= (replyECIES ? DATABASE_LOOKUP_ECIES_FLAG : DATABASE_LOOKUP_ENCRYPTION_FLAG);
buf ++;
htobe32buf (buf, replyTunnel->GetNextTunnelID ()); // reply tunnel ID
buf += 4;
@ -204,8 +206,16 @@ namespace i2p
// encryption
memcpy (buf, replyKey, 32);
buf[32] = 1; // 1 tag
memcpy (buf + 33, replyTag, 32);
buf += 65;
if (replyECIES)
{
memcpy (buf + 33, replyTag, 8); // 8 bytes tag
buf += 41;
}
else
{
memcpy (buf + 33, replyTag, 32); // 32 bytes tag
buf += 65;
}
m->len += (buf - m->GetPayload ());
m->FillI2NPMessageHeader (eI2NPDatabaseLookup);