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Code Issues Releases Activity

send encrypted reply to DatabaseLokkup if requested

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orignal 2014-07-28 14:25:14 -04:00
parent b1c2ba53d1
commit c55ad954bf
1 changed files with 26 additions and 0 deletions
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26
NetDb.cpp
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@ -571,8 +571,20 @@ namespace data
LogPrint ("DatabaseLookup for ", key, " recieved"); LogPrint ("DatabaseLookup for ", key, " recieved");
uint8_t flag = buf[64]; uint8_t flag = buf[64];
uint32_t replyTunnelID = 0; uint32_t replyTunnelID = 0;
uint8_t * excluded = buf + 64;
if (flag & 0x01) //reply to tunnel if (flag & 0x01) //reply to tunnel
{
replyTunnelID = be32toh (*(uint32_t *)(buf + 64)); replyTunnelID = be32toh (*(uint32_t *)(buf + 64));
excluded += 4;
}
uint16_t numExcluded = be16toh (*(uint16_t *)excluded);
excluded += 2;
if (numExcluded > 512)
{
LogPrint ("Number of excluded peers exceeds 512");
numExcluded = 0; // TODO:
}
excluded += numExcluded*32; // TODO: check excluded list and all zeros (exploratory)
I2NPMessage * replyMsg = nullptr; I2NPMessage * replyMsg = nullptr;
auto router = FindRouter (buf); auto router = FindRouter (buf);
@ -589,7 +601,21 @@ namespace data
if (replyMsg) if (replyMsg)
{ {
if (replyTunnelID) if (replyTunnelID)
{
// encryption might be used though tunnel only
if (flag & 0x02) // encrypted reply requested
{
uint8_t * sessionKey = excluded;
uint8_t numTags = sessionKey[32];
if (numTags > 0)
{
uint8_t * sessionTag = sessionKey + 33; // take first tag
i2p::garlic::GarlicRoutingSession garlic (sessionKey, sessionTag);
replyMsg = garlic.WrapSingleMessage (replyMsg, nullptr);
}
}
i2p::tunnel::tunnels.GetNextOutboundTunnel ()->SendTunnelDataMsg (buf+32, replyTunnelID, replyMsg); i2p::tunnel::tunnels.GetNextOutboundTunnel ()->SendTunnelDataMsg (buf+32, replyTunnelID, replyMsg);
}
else else
i2p::transports.SendMessage (buf, replyMsg); i2p::transports.SendMessage (buf, replyMsg);
} }