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node-util/main.cc
Claude b955083d06
rebrand(lethean): update branding, ports, and config for Lethean blockchain 
- Coin: Zano → Lethean, ticker: ZAN/ZANO → LTHN
- Ports: 11211 → 36941 (mainnet RPC), 46941 (testnet RPC)
- Wallet: 11212 → 36944/46944
- Address prefix: iTHN
- URLs: zano.org → lethean.io
- Explorer links: explorer.lthn.io

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-01 22:24:13 +01:00

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#include <node.h>
#include <node_buffer.h>
#include <v8.h>
#include <stdint.h>
#include <string>
#include <algorithm>
#include "currency_core/currency_basic.h"
#include "currency_core/currency_format_utils.h"
#include "currency_protocol/blobdatatype.h"
#include "crypto/crypto.h"
#include "crypto/hash.h"
#include "common/base58.h"
#include "serialization/binary_utils.h"
#include "currency_core/basic_pow_helpers.h"
#include <nan.h>
#if BOOST_VERSION < 107500
#pragma message("Detected Boost version: " BOOST_LIB_VERSION)
#error "Boost version 1.75.0 or newer is required for lethean-node-util."
#endif
#define THROW_ERROR_EXCEPTION(x) Nan::ThrowError(x)
void callback(char* data, void* hint) {
free(data);
}
using namespace node;
using namespace v8;
using namespace currency;
blobdata uint64be_to_blob(uint64_t num) {
blobdata res = " ";
res[0] = num >> 56 & 0xff;
res[1] = num >> 48 & 0xff;
res[2] = num >> 40 & 0xff;
res[3] = num >> 32 & 0xff;
res[4] = num >> 24 & 0xff;
res[5] = num >> 16 & 0xff;
res[6] = num >> 8 & 0xff;
res[7] = num & 0xff;
return res;
}
const size_t MM_NONCE_SIZE = 1 + 2 + sizeof(crypto::hash);
NAN_METHOD(get_merged_mining_nonce_size) {
Local<Integer> returnValue = Nan::New(static_cast<uint32_t>(MM_NONCE_SIZE));
info.GetReturnValue().Set(returnValue);
}
NAN_METHOD(convert_blob) {
if (info.Length() < 1)
return THROW_ERROR_EXCEPTION("You must provide one argument.");
v8::Isolate *isolate = v8::Isolate::GetCurrent();
Local<Object> target = info[0]->ToObject(isolate->GetCurrentContext()).ToLocalChecked();
if (!Buffer::HasInstance(target))
return THROW_ERROR_EXCEPTION("Argument should be a buffer object.");
blobdata input = std::string(Buffer::Data(target), Buffer::Length(target));
blobdata output = "";
//convert
block b = AUTO_VAL_INIT(b);
if (!parse_and_validate_block_from_blob(input, b))
return THROW_ERROR_EXCEPTION("Failed to parse block");
output = get_block_hashing_blob(b);
v8::Local<v8::Value> returnValue = Nan::CopyBuffer((char*)output.data(), output.size()).ToLocalChecked();
info.GetReturnValue().Set(
returnValue
);
}
void address_decode(const Nan::FunctionCallbackInfo<v8::Value>& info) {
if (info.Length() < 1)
return THROW_ERROR_EXCEPTION("You must provide one argument.");
v8::Isolate *isolate = v8::Isolate::GetCurrent();
Local<Object> target = info[0]->ToObject(isolate->GetCurrentContext()).ToLocalChecked();
if (!Buffer::HasInstance(target))
return THROW_ERROR_EXCEPTION("Argument should be a buffer object.");
blobdata input = std::string(Buffer::Data(target), Buffer::Length(target));
blobdata data;
uint64_t prefix;
if (!tools::base58::decode_addr(input, prefix, data))
{
info.GetReturnValue().Set(Nan::Undefined());
}
// info.GetReturnValue().Set(Nan::Undefined());
account_public_address adr;
if (!::serialization::parse_binary(data, adr) || !crypto::check_key(adr.spend_public_key) || !crypto::check_key(adr.view_public_key))
{
if(data.length())
{
data = uint64be_to_blob(prefix) + data;
}
else
{
info.GetReturnValue().Set(Nan::Undefined());
}
v8::Local<v8::Value> returnValue = Nan::CopyBuffer((char*)data.data(), data.size()).ToLocalChecked();
info.GetReturnValue().Set( returnValue);
}
else
{
info.GetReturnValue().Set(Nan::New(static_cast<uint32_t>(prefix)));
}
}
#define SET_BUFFER_RETURN(x, len) \
args.GetReturnValue().Set(Buffer::Copy(isolate, x, len).ToLocalChecked());
/*
Arguments:
1: block_header_hash - 32-byte buffer
2: nonce - 8-byte buffer
2: height - 8-byte buffer
*/
void get_pow_hash(const Nan::FunctionCallbackInfo<v8::Value>& args) {
if (args.Length() < 3)
return THROW_ERROR_EXCEPTION("You must provide 3 arguments.");
v8::Isolate *isolate = v8::Isolate::GetCurrent();
Local<Object> block_header_hash = args[0]->ToObject(isolate->GetCurrentContext()).ToLocalChecked();
//Local<Object> nonce = args[1]->ToObject();
Local<Object> nonce = args[1]->ToObject(isolate->GetCurrentContext()).ToLocalChecked();
//Local<Object> height = args[2]->ToObject();
Local<Object> height = args[2]->ToObject(isolate->GetCurrentContext()).ToLocalChecked();
if(!Buffer::HasInstance(block_header_hash))
return THROW_ERROR_EXCEPTION("Argument 1 should be a buffer object.");
if(!Buffer::HasInstance(nonce))
return THROW_ERROR_EXCEPTION("Argument 2 should be a buffer object.");
if (!Buffer::HasInstance(height))
return THROW_ERROR_EXCEPTION("Argument 3 should be a buffer object.");
uint32_t block_header_hash_len = Buffer::Length(block_header_hash);
uint64_t nonce_len = Buffer::Length(nonce);
uint64_t height_len = Buffer::Length(height);
if(block_header_hash_len != 32)
return THROW_ERROR_EXCEPTION("Argument 1 should be a buffer object of 32 bytes long.");
if (nonce_len != 8)
return THROW_ERROR_EXCEPTION("Argument 2 should be a buffer object of 8 bytes long.");
if (height_len != 8)
return THROW_ERROR_EXCEPTION("Argument 3 should be a buffer object of 8 bytes long.");
crypto::hash block_header_hash_val = *(crypto::hash*)Buffer::Data(block_header_hash);
uint64_t nonce_val = *(uint64_t*)Buffer::Data(nonce);
uint64_t height_val = *(uint64_t*)Buffer::Data(height);
crypto::hash h = currency::get_block_longhash(height_val, block_header_hash_val, nonce_val);
SET_BUFFER_RETURN((const char*)&h, 32);
}
/*
Arguments:
1: block_template_buffer - n-byte buffer
2: extra_data - n-byte buffer(job identification)
*/
void get_hash_from_block_template_with_extra(const Nan::FunctionCallbackInfo<v8::Value>& args) {
if (args.Length() < 2)
return THROW_ERROR_EXCEPTION("You must provide 2 arguments.");
v8::Isolate *isolate = v8::Isolate::GetCurrent();
Local<Object> block_template_buffer = args[0]->ToObject(isolate->GetCurrentContext()).ToLocalChecked();
//Local<Object> extra_data = args[1]->ToObject();
Local<Object> extra_data = args[1]->ToObject(isolate->GetCurrentContext()).ToLocalChecked();
if (!Buffer::HasInstance(block_template_buffer))
return THROW_ERROR_EXCEPTION("Argument 1 should be a buffer object.");
if (!Buffer::HasInstance(extra_data))
return THROW_ERROR_EXCEPTION("Argument 2 should be a buffer object.");
uint64_t block_template_buffer_len = Buffer::Length(block_template_buffer);
uint64_t extra_data_len = Buffer::Length(extra_data);
char* block_template_buffer_ptr = Buffer::Data(block_template_buffer);
std::string blob(block_template_buffer_ptr, block_template_buffer_len);
char* extra_data_ptr = Buffer::Data(extra_data);
std::string extra(extra_data_ptr, extra_data_len);
currency::block b = AUTO_VAL_INIT(b);
bool res = currency::parse_and_validate_block_from_blob(blob, b);
if (!res)
return THROW_ERROR_EXCEPTION("Unable to parse block");
//if (extra.size())
// b.miner_tx.extra.push_back(extra);
crypto::hash h = currency::get_block_header_mining_hash(b);
SET_BUFFER_RETURN((const char*)&h, 32);
}
/*
Arguments:
1: block_template_buffer - n-byte buffer
2: extra_data - n-byte buffer(job identification)
3: nonce - 8-byte buffer - nonce
*/
void get_blob_from_block_template(const Nan::FunctionCallbackInfo<v8::Value>& args) {
if (args.Length() < 3)
return THROW_ERROR_EXCEPTION("You must provide 3 arguments.");
v8::Isolate *isolate = v8::Isolate::GetCurrent();
Local<Object> block_template_buffer = args[0]->ToObject(isolate->GetCurrentContext()).ToLocalChecked();
//Local<Object> extra_data = args[1]->ToObject();
Local<Object> extra_data = args[1]->ToObject(isolate->GetCurrentContext()).ToLocalChecked();
//Local<Object> nonce = args[2]->ToObject();
Local<Object> nonce = args[2]->ToObject(isolate->GetCurrentContext()).ToLocalChecked();
if (!Buffer::HasInstance(block_template_buffer))
return THROW_ERROR_EXCEPTION("Argument 1 should be a buffer object.");
if (!Buffer::HasInstance(extra_data))
return THROW_ERROR_EXCEPTION("Argument 2 should be a buffer object.");
if (!Buffer::HasInstance(nonce))
return THROW_ERROR_EXCEPTION("Argument 3 should be a buffer object.");
uint64_t block_template_buffer_len = Buffer::Length(block_template_buffer);
uint64_t extra_data_len = Buffer::Length(extra_data);
uint64_t nonce_len = Buffer::Length(nonce);
if (nonce_len != 8)
return THROW_ERROR_EXCEPTION("Argument 3 should be a buffer object of 8 bytes long.");
char* block_template_buffer_ptr = Buffer::Data(block_template_buffer);
std::string blob(block_template_buffer_ptr, block_template_buffer_len);
char* extra_data_ptr = Buffer::Data(extra_data);
std::string extra(extra_data_ptr, extra_data_len);
uint64_t nonce_val = *(uint64_t* )Buffer::Data(nonce);
currency::block b = AUTO_VAL_INIT(b);
bool res = currency::parse_and_validate_block_from_blob(blob, b);
if (!res)
return THROW_ERROR_EXCEPTION("Unable to parse block");
//if (extra.size())
// b.miner_tx.extra.push_back(extra);
b.nonce = nonce_val;
std::string result_blob = currency::block_to_blob(b);
crypto::hash h = currency::get_block_hash(b);
SET_BUFFER_RETURN(result_blob.data(), result_blob.size());
}
void get_id_hash(const Nan::FunctionCallbackInfo<v8::Value>& args) {
if (args.Length() < 1)
return THROW_ERROR_EXCEPTION("You must provide 2 arguments.");
v8::Isolate *isolate = v8::Isolate::GetCurrent();
Local<Object> block_buffer = args[0]->ToObject(isolate->GetCurrentContext()).ToLocalChecked();
if (!Buffer::HasInstance(block_buffer))
return THROW_ERROR_EXCEPTION("Argument 1 should be a buffer object.");
uint64_t block_buffer_len = Buffer::Length(block_buffer);
char* block_buffer_ptr = Buffer::Data(block_buffer);
std::string blob(block_buffer_ptr, block_buffer_len);
currency::block b = AUTO_VAL_INIT(b);
bool res = currency::parse_and_validate_block_from_blob(blob, b);
if (!res)
return THROW_ERROR_EXCEPTION("Unable to parse block");
crypto::hash h = currency::get_block_hash(b);
SET_BUFFER_RETURN((const char*)&h, 32);
}
void is_address_valid(const Nan::FunctionCallbackInfo<v8::Value>& info)
{
if (info.Length() < 1)
return THROW_ERROR_EXCEPTION("You must provide one argument.");
v8::Isolate *isolate = v8::Isolate::GetCurrent();
Local<Object> target = info[0]->ToObject(isolate->GetCurrentContext()).ToLocalChecked();
if (!Buffer::HasInstance(target))
return THROW_ERROR_EXCEPTION("Argument should be a buffer object.");
blobdata input = std::string(Buffer::Data(target), Buffer::Length(target));
account_public_address adr;
bool r = get_account_address_from_str(adr, input);
if(!r)
{
info.GetReturnValue().Set(Nan::Undefined());
}
else
{
info.GetReturnValue().Set(Nan::True());
}
}
NAN_MODULE_INIT(init) {
Nan::Set(target, Nan::New("convert_blob").ToLocalChecked(), Nan::GetFunction(Nan::New<FunctionTemplate>(convert_blob)).ToLocalChecked());
Nan::Set(target, Nan::New("address_decode").ToLocalChecked(), Nan::GetFunction(Nan::New<FunctionTemplate>(address_decode)).ToLocalChecked());
Nan::Set(target, Nan::New("get_pow_hash").ToLocalChecked(), Nan::GetFunction(Nan::New<FunctionTemplate>(get_pow_hash)).ToLocalChecked());
Nan::Set(target, Nan::New("get_hash_from_block_template_with_extra").ToLocalChecked(), Nan::GetFunction(Nan::New<FunctionTemplate>(get_hash_from_block_template_with_extra)).ToLocalChecked());
Nan::Set(target, Nan::New("get_blob_from_block_template").ToLocalChecked(), Nan::GetFunction(Nan::New<FunctionTemplate>(get_blob_from_block_template)).ToLocalChecked());
Nan::Set(target, Nan::New("get_id_hash").ToLocalChecked(), Nan::GetFunction(Nan::New<FunctionTemplate>(get_id_hash)).ToLocalChecked());
Nan::Set(target, Nan::New("is_address_valid").ToLocalChecked(), Nan::GetFunction(Nan::New<FunctionTemplate>(is_address_valid)).ToLocalChecked());
Nan::Set(target, Nan::New("get_merged_mining_nonce_size").ToLocalChecked(), Nan::GetFunction(Nan::New<FunctionTemplate>(get_merged_mining_nonce_size)).ToLocalChecked());
}
NODE_MODULE(cryptonote, init)
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