lokinet/llarp/dht/messages/findname.cpp
Thomas Winget 7caa87862e standardize include format and pragma once
All #ifndef guards on headers have been removed, I think,
in favor of #pragma once

Headers are now included as `#include "filename"` if the included file
resides in the same directory as the file including it, or any
subdirectory therein.  Otherwise they are included as
`#include <project/top/dir/relative/path/filename>`

The above does not include system/os headers.
2021-03-09 19:01:41 -05:00

66 lines
1.8 KiB
C++

#include "findname.hpp"
#include <oxenmq/bt_serialize.h>
#include <llarp/dht/context.hpp>
#include "gotname.hpp"
#include <llarp/router/abstractrouter.hpp>
#include <llarp/rpc/lokid_rpc_client.hpp>
#include <llarp/path/path_context.hpp>
#include <llarp/routing/dht_message.hpp>
namespace llarp::dht
{
FindNameMessage::FindNameMessage(const Key_t& from, Key_t namehash, uint64_t txid)
: IMessage(from), NameHash(std::move(namehash)), TxID(txid)
{}
bool
FindNameMessage::BEncode(llarp_buffer_t* buf) const
{
const auto data = oxenmq::bt_serialize(oxenmq::bt_dict{
{"A", "N"sv},
{"H", std::string_view{(char*)NameHash.data(), NameHash.size()}},
{"T", TxID}});
return buf->write(data.begin(), data.end());
}
bool
FindNameMessage::DecodeKey(const llarp_buffer_t& key, llarp_buffer_t* val)
{
if (key == "H")
{
return NameHash.BDecode(val);
}
if (key == "T")
{
return bencode_read_integer(val, &TxID);
}
return bencode_discard(val);
}
bool
FindNameMessage::HandleMessage(struct llarp_dht_context* dht, std::vector<Ptr_t>& replies) const
{
(void)replies;
auto r = dht->impl->GetRouter();
if (pathID.IsZero() or not r->IsServiceNode())
return false;
r->RpcClient()->LookupLNSNameHash(NameHash, [r, pathID = pathID, TxID = TxID](auto maybe) {
auto path = r->pathContext().GetPathForTransfer(pathID);
if (path == nullptr)
return;
routing::DHTMessage msg;
if (maybe.has_value())
{
msg.M.emplace_back(new GotNameMessage(dht::Key_t{}, TxID, *maybe));
}
else
{
msg.M.emplace_back(new GotNameMessage(dht::Key_t{}, TxID, service::EncryptedName{}));
}
path->SendRoutingMessage(msg, r);
});
return true;
}
} // namespace llarp::dht