mirror of
https://github.com/oxen-io/lokinet
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7caa87862e
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.
62 lines
1.8 KiB
C++
62 lines
1.8 KiB
C++
#include "gotname.hpp"
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#include <oxenmq/bt_serialize.h>
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#include <llarp/dht/context.hpp>
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#include <llarp/router/abstractrouter.hpp>
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#include <llarp/path/path_context.hpp>
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namespace llarp::dht
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{
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constexpr size_t NameSizeLimit = 128;
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GotNameMessage::GotNameMessage(const Key_t& from, uint64_t txid, service::EncryptedName data)
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: IMessage(from), result(std::move(data)), TxID(txid)
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{
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if (result.ciphertext.size() > NameSizeLimit)
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throw std::invalid_argument("name data too big");
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}
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bool
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GotNameMessage::BEncode(llarp_buffer_t* buf) const
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{
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const std::string nonce((const char*)result.nonce.data(), result.nonce.size());
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const auto data = oxenmq::bt_serialize(
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oxenmq::bt_dict{{"A", "M"sv}, {"D", result.ciphertext}, {"N", nonce}, {"T", TxID}});
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return buf->write(data.begin(), data.end());
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}
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bool
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GotNameMessage::DecodeKey(const llarp_buffer_t& key, llarp_buffer_t* val)
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{
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if (key == "D")
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{
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llarp_buffer_t str{};
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if (not bencode_read_string(val, &str))
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return false;
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if (str.sz > NameSizeLimit)
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return false;
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result.ciphertext.resize(str.sz);
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std::copy_n(str.cur, str.sz, result.ciphertext.data());
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return true;
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}
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if (key == "N")
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{
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return result.nonce.BDecode(val);
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}
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if (key == "T")
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{
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return bencode_read_integer(val, &TxID);
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}
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return bencode_discard(val);
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}
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bool
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GotNameMessage::HandleMessage(struct llarp_dht_context* ctx, std::vector<Ptr_t>&) const
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{
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auto pathset = ctx->impl->GetRouter()->pathContext().GetLocalPathSet(pathID);
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if (pathset == nullptr)
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return false;
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auto copy = std::make_shared<const GotNameMessage>(*this);
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return pathset->HandleGotNameMessage(copy);
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}
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} // namespace llarp::dht
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