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4fc0790fe77e800190e08dfb85f70a4884b04044
bal-server/src/bin/bal-pusher.rs
svatantrya 4fc0790fe7 security: fix audit points 5-9 + optimize echo_push/info endpoints 
- Point 5 (SSRF): Add URL validation for WELIST_SERVER_URL (src/validation.rs)
- Point 6 (DB Access): Add DB path validation, symlink check, WAL mode (open_db)
- Point 8 (HTTPS): Extract nginx config, add deployment checklist, bind warnings
- Point 9 (Input Validation): Add NETWORKS check (404 for unknown), txid 64-hex validation
- Optimize echo_push: parse transactions outside DB lock, batch duplicate check, N+1 xpub lookup eliminated via HashSet cache
- Optimize echo_info: derive BIP32 address outside DB lock, minimize lock duration
- Fix echo_stats SQL injection via parameter binding + add idx_stats_chain index
- New regression tests: ssrf_tests, db_path_validation, input_validation_tests
2026-07-16 18:59:30 -04:00

712 lines
26 KiB
Rust
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extern crate bitcoincore_rpc;
extern crate zmq;
use bitcoin::Network;
use bitcoincore_rpc::{Auth, Client, Error, RpcApi, bitcoin};
use bitcoincore_rpc_json::GetBlockchainInfoResult;
use byteorder::{LittleEndian, ReadBytesExt};
use hex;
use log::{debug, error, info, trace, warn};
use serde::Deserialize;
use serde::Serialize;
use serde_json::json;
use sqlite::{Connection, Value};
use std::collections::HashMap;
use std::env;
use std::error::Error as StdError;
use std::io::Cursor;
use std::str;
use std::{thread, time::Duration};
use zmq::{Context, DEALER, DONTWAIT, Socket};
use bal_server::db::open_db;
use bal_server::validation::is_valid_welist_url;
use base64::{Engine as _, engine::general_purpose};
use openssl::hash::MessageDigest;
use openssl::pkey::PKey;
use openssl::sign::Signer;
use openssl::sign::Verifier;
use reqwest::Client as rClient;
use std::fs;
use std::time::Instant;
const LOCKTIME_THRESHOLD: i64 = 5000000;
const VERSION: &str = "0.0.2";
#[derive(Debug, Clone, Serialize, Deserialize)]
struct MyConfig {
db_file: String,
bitcoin_dir: String,
regtest: NetworkParams,
testnet: NetworkParams,
testnet4: NetworkParams,
signet: NetworkParams,
mainnet: NetworkParams,
send_stats: bool,
url: String,
ssl_key_path: String,
}
impl Default for MyConfig {
fn default() -> Self {
MyConfig {
db_file: env::var("BAL_PUSHER_DB_FILE").unwrap_or("bal.db".to_string()),
bitcoin_dir: env::var("BAL_PUSHER_BITCOIN_DIR").unwrap_or("".to_string()),
regtest: get_network_params_default(Network::Regtest),
testnet: get_network_params_default(Network::Testnet),
testnet4: get_network_params_default(Network::Testnet4),
signet: get_network_params_default(Network::Signet),
mainnet: get_network_params_default(Network::Bitcoin),
send_stats: env::var("BAL_PUSHER_SEND_STATS")
.unwrap_or("false".to_string())
.parse::<bool>()
.unwrap_or(false),
url: env::var("BAL_SERVER_URL").unwrap_or("http://localhost/".to_string()),
ssl_key_path: env::var("SSL_KEY_PATH").unwrap_or("privkey.pem".to_string()),
}
}
}
#[derive(Debug, Clone, Serialize, Deserialize)]
struct NetworkParams {
host: String,
port: u16,
dir_path: String,
db_field: String,
cookie_file: String,
rpc_user: String,
rpc_pass: String,
zmq_listener: String,
}
fn get_network_params(cfg: &MyConfig, network: Network) -> &NetworkParams {
match network {
Network::Testnet => &cfg.testnet,
Network::Testnet4 => &cfg.testnet4,
Network::Signet => &cfg.signet,
Network::Regtest => &cfg.regtest,
_ => &cfg.mainnet,
}
}
fn get_network_params_default(network: Network) -> NetworkParams {
match network {
Network::Testnet => NetworkParams {
host: "http://i27.0.0.1".to_string(),
port: 18332,
dir_path: "testnet3/".to_string(),
db_field: "testnet".to_string(),
cookie_file: "".to_string(),
rpc_user: "".to_string(),
rpc_pass: "".to_string(),
zmq_listener: "tcp://127.0.0.1:23332".to_string(),
},
Network::Testnet4 => NetworkParams {
host: "http://i27.0.0.1".to_string(),
port: 48332,
dir_path: "testnet4/".to_string(),
db_field: "testnet4".to_string(),
cookie_file: "".to_string(),
rpc_user: "".to_string(),
rpc_pass: "".to_string(),
zmq_listener: "tcp://127.0.0.1:24332".to_string(),
},
Network::Signet => NetworkParams {
host: "http://127.0.0.1".to_string(),
port: 18332,
dir_path: "signet/".to_string(),
db_field: "signet".to_string(),
cookie_file: "".to_string(),
rpc_user: "".to_string(),
rpc_pass: "".to_string(),
zmq_listener: "tcp://127.0.0.1:22332".to_string(),
},
Network::Regtest => NetworkParams {
host: "http://127.0.0.1".to_string(),
port: 18443,
dir_path: "regtest/".to_string(),
db_field: "regtest".to_string(),
cookie_file: "".to_string(),
rpc_user: "".to_string(),
rpc_pass: "".to_string(),
zmq_listener: "tcp://127.0.0.1:21332".to_string(),
},
_ => NetworkParams {
host: "http://127.0.0.1".to_string(),
port: 8332,
dir_path: "".to_string(),
db_field: "bitcoin".to_string(),
cookie_file: "".to_string(),
rpc_user: "".to_string(),
rpc_pass: "".to_string(),
zmq_listener: "tcp://127.0.0.1:28332".to_string(),
},
}
}
fn get_cookie_filename(network: &NetworkParams) -> Result<String, Box<dyn StdError>> {
if network.cookie_file != "" {
Ok(network.cookie_file.clone())
} else {
match env::var_os("HOME") {
Some(home) => match home.to_str() {
Some(home_str) => {
let cookie_file_path =
format!("{}/.bitcoin/{}.cookie", home_str, network.dir_path);
Ok(cookie_file_path)
}
None => Err("wrong HOME value".into()),
},
None => Err("Please Set HOME environment variable".into()),
}
}
}
fn get_client_from_username(
url: &String,
network: &NetworkParams,
) -> Result<(Client, GetBlockchainInfoResult), Box<dyn StdError>> {
if network.rpc_user != "" {
match Client::new(
&url[..],
Auth::UserPass(network.rpc_user.to_string(), network.rpc_pass.to_string()),
) {
Ok(client) => match client.get_blockchain_info() {
Ok(bcinfo) => Ok((client, bcinfo)),
Err(err) => Err(err.into()),
},
Err(err) => Err(err.into()),
}
} else {
Err("Failed".into())
}
}
fn get_client_from_cookie(
url: &String,
network: &NetworkParams,
) -> Result<(Client, GetBlockchainInfoResult), Box<dyn StdError>> {
match get_cookie_filename(network) {
Ok(cookie) => match Client::new(&url[..], Auth::CookieFile(cookie.into())) {
Ok(client) => match client.get_blockchain_info() {
Ok(bcinfo) => Ok((client, bcinfo)),
Err(err) => Err(err.into()),
},
Err(err) => Err(err.into()),
},
Err(err) => Err(err.into()),
}
}
fn get_client(
network: &NetworkParams,
) -> Result<(Client, GetBlockchainInfoResult), Box<dyn StdError>> {
let url = format!("{}:{}/", network.host, &network.port);
debug!("trying to connect to bitcoin daemon:{url}");
match get_client_from_username(&url, network) {
Ok(client) => Ok(client),
Err(_) => match get_client_from_cookie(&url, &network) {
Ok(client) => Ok(client),
Err(err) => Err(err.into()),
},
}
}
async fn main_result(cfg: &MyConfig, network_params: &NetworkParams) -> Result<(), Error> {
/*let url = args.next().expect("Usage: <rpc_url> <username> <password>");
let user = args.next().expect("no user given");
let pass = args.next().expect("no pass given");
*/
//let network = Network::Regtest
match get_client(network_params) {
Ok((rpc, bcinfo)) => {
info!("connected");
//let best_block_hash = rpc.get_best_block_hash()?;
//info!("best block hash: {}", best_block_hash);
//let bestblockcount = rpc.get_block_count()?;
//info!("best block height: {}", bestblockcount);
//let best_block_hash_by_height = rpc.get_block_hash(bestblockcount)?;
//info!("best block hash by height: {}", best_block_hash_by_height);
//assert_eq!(best_block_hash_by_height, best_block_hash);
//let from_block= std::cmp::max(0, bestblockcount - 11);
//let mut time_sum:u64=0;
//for i in from_block..bestblockcount{
// let hash = rpc.get_block_hash(i).unwrap();
// let block: bitcoin::Block = rpc.get_by_id(&hash).unwrap();
// time_sum += <u32 as Into<u64>>::into(block.header.time);
//}
//let average_time = time_sum/11;
info!("median time: {}", bcinfo.median_time);
//info!("height time: {}",bcinfo.median_time);
info!("blocks: {}", bcinfo.blocks);
debug!("best block hash: {}", bcinfo.best_block_hash);
let average_time = bcinfo.median_time;
let db = match open_db(&cfg.db_file) {
Ok(c) => c,
Err(e) => {
error!("Fatal: {}", e);
std::process::exit(1);
}
};
info!("db open {}", &cfg.db_file);
let sqlquery = "SELECT * FROM tbl_tx WHERE network = :network AND status = :status AND ( locktime < :bestblock_height OR locktime > :locktime_threshold AND locktime < :bestblock_time);";
let query_tx = db.prepare(sqlquery).unwrap().into_iter();
trace!("query_tx: {}", sqlquery);
trace!(":locktime_threshold: {}", LOCKTIME_THRESHOLD);
trace!(":bestblock_time: {}", average_time);
trace!(":bestblock_height: {}", bcinfo.blocks);
trace!(":network: {}", network_params.db_field.clone());
trace!(":status: {}", 0);
//let query_tx = db.prepare("SELECT * FROM tbl_tx where status = :status").unwrap().into_iter();
let mut pushed_txs: Vec<String> = Vec::new();
let mut invalid_txs: std::collections::HashMap<String, String> = HashMap::new();
for row in query_tx
.bind::<&[(_, Value)]>(
&[
(":locktime_threshold", (LOCKTIME_THRESHOLD as i64).into()),
(":bestblock_time", (average_time as i64).into()),
(":bestblock_height", (bcinfo.blocks as i64).into()),
(":network", network_params.db_field.clone().into()),
(":status", 0.into()),
][..],
)
.unwrap()
.map(|row| row.unwrap())
{
let tx = row.read::<&str, _>("tx");
let txid = row.read::<&str, _>("txid");
let locktime = row.read::<i64, _>("locktime");
info!("to be pushed: {}: {}", txid, locktime);
match rpc.send_raw_transaction(tx) {
Ok(o) => {
/*let mut file = OpenOptions::new()
.append(true) // Set the append option
.create(true) // Create the file if it doesn't exist
.open("valid_txs")?;
let data = format!("{}\t:\t{}\t:\t{}\n",txid,average_time,locktime);
file.write_all(data.as_bytes())?;
drop(file);
*/
info!("tx: {} pusshata PUSHED\n{}", txid, o);
pushed_txs.push(txid.to_string());
}
Err(err) => {
/*let mut file = OpenOptions::new()
.append(true) // Set the append option
.create(true) // Create the file if it doesn't exist
.open("/home/bal/invalid_txs")?;
let data = format!("{}:\t{}\t:\t{}\t:\t{}\n",txid,err,average_time,locktime);
file.write_all(data.as_bytes())?;
drop(file);
*/
warn!("Error: {}\n{}", err, txid);
//store err in invalid_txs
invalid_txs.insert(txid.to_string(), err.to_string());
}
};
}
for txid in &pushed_txs {
let sql = "UPDATE tbl_tx SET status = 1 WHERE txid = ?";
let mut stmt = db.prepare(sql).unwrap();
stmt.bind((1, Value::String(txid.clone()))).unwrap();
let _ = stmt.next();
}
for (txid, txerr) in &invalid_txs {
let sql = "UPDATE tbl_tx SET status = 2, push_err = ? WHERE txid = ?";
let mut stmt = db.prepare(sql).unwrap();
stmt.bind((1, Value::String(txerr.clone()))).unwrap();
stmt.bind((2, Value::String(txid.clone()))).unwrap();
let _ = stmt.next();
}
let _ = send_stats_report(cfg, bcinfo).await;
let _ = calculate_stats(&db, network_params.db_field.clone()).await;
}
Err(erx) => {
error!("impossible to get client: {}, retrying on next block", erx);
thread::sleep(Duration::from_secs(5));
return Ok(());
}
}
Ok(())
}
async fn calculate_stats(db: &Connection, chain: String) -> Result<(), reqwest::Error> {
// Validate chain to prevent SQL injection via environment variable tampering
if !chain
.chars()
.all(|c| c.is_alphanumeric() || c == '-' || c == '_')
|| chain.is_empty()
{
error!("Invalid chain name: {chain}");
return Ok(());
}
//let sql = "drop table if exists tbl_stats;";
let sql = format!("DELETE FROM tbl_stats WHERE chain = '{chain}';");
if let Err(err) = db.execute(&sql) {
error!("error deleting from tbl_stats where chain:{chain} error: {err}");
}
let sql = format!(
"INSERT INTO tbl_stats (
report_date, chain, totals, waiting, sent, failed,
waiting_profit, sent_profit, missed_profit, unique_inputs
)
VALUES (
CURRENT_TIMESTAMP,
'{chain}',
(SELECT COUNT(*) FROM tbl_tx WHERE network = '{chain}'),
(SELECT COUNT(*) FROM tbl_tx WHERE status = 0 AND network = '{chain}'),
(SELECT COUNT(*) FROM tbl_tx WHERE status = 1 AND network = '{chain}'),
(SELECT COUNT(*) FROM tbl_tx WHERE status = 2 AND network = '{chain}'),
(SELECT IFNULL(SUM(our_fees),0) FROM tbl_tx WHERE status = 0 AND network = '{chain}'),
(SELECT IFNULL(SUM(our_fees),0) FROM tbl_tx WHERE status = 1 AND network = '{chain}'),
(SELECT IFNULL(SUM(our_fees),0) FROM tbl_tx WHERE status = 2 AND network = '{chain}'),
(SELECT COUNT(DISTINCT tbl_inp.in_txid)
FROM tbl_inp
JOIN tbl_tx ON tbl_inp.txid = tbl_tx.txid
WHERE tbl_tx.status = 0 AND tbl_tx.network = '{chain}')
)
ON CONFLICT(chain) DO UPDATE SET
report_date = excluded.report_date,
totals = excluded.totals,
waiting = excluded.waiting,
sent = excluded.sent,
failed = excluded.failed,
waiting_profit = excluded.waiting_profit,
sent_profit = excluded.sent_profit,
missed_profit = excluded.missed_profit,
unique_inputs = excluded.unique_inputs;
"
);
/*
let sql = format!("CREATE TABLE tbl_stats AS
SELECT
CURRENT_TIMESTAMP AS report_date,
'{chain}' as chain,
(SELECT COUNT(*) FROM tbl_tx WHERE network ='{chain}') AS totals,
(SELECT COUNT(*) FROM tbl_tx WHERE status = 0 AND network ='{chain}') AS waiting,
(SELECT COUNT(*) FROM tbl_tx WHERE status = 1 AND network ='{chain}') AS sent,
(SELECT COUNT(*) FROM tbl_tx WHERE status = 2 AND network ='{chain}') AS failed,
(SELECT SUM(our_fees) FROM tbl_tx WHERE status = 0 AND network ='{chain}') AS waiting_profit,
(SELECT SUM(our_fees) OR 0 FROM tbl_tx WHERE status = 1 AND network ='{chain}') AS sent_profit,
(SELECT SUM(our_fees) FROM tbl_tx WHERE status = 2 AND network ='{chain}') AS missed_profit,
(SELECT COUNT(*) FROM tbl_inp JOIN tbl_tx ON(tbl_inp.txid = tbl_tx.txid) WHERE tbl_tx.status=0 AND tbl_tx.network ='{chain}') AS unique_inputs;
");
let sql = "UPDATE tbl_stats set
totals = (SELECT COUNT(*) FROM tbl_tx WHERE network ='{chain}'),
waiting = (SELECT COUNT(*) FROM tbl_tx WHERE status = 0 AND network ='{chain}'),
sent = (SELECT COUNT(*) FROM tbl_tx WHERE status = 1 AND network ='{chain}'),
failed = (SELECT COUNT(*) FROM tbl_tx WHERE status = 1 AND network ='{chain}'),
waiting_profit = (SELECT SUM(our_fees) FROM tbl_tx WHERE status = 0 AND network ='{chain}'),
sent_profit = (SELECT SUM(our_fees) FROM tbl_tx WHERE status = 0 AND network ='{chain}'),
missed_profit = (SELECT SUM(our_fees) FROM tbl_tx WHERE status = 0 AND network ='{chain}')
unique_inputs = (SELECT COUNT(*) FROM tbl_inp JOIN tbl_tx ON(tbl_inp.txid = tbl_tx.txid) WHERE tbl_tx.status=0 AND tbl_tx.network ='{chain}')
WHERE chain = '{chain}'
*/
if let Err(err) = db.execute(&sql) {
error!("error inserting creating stats table {err}");
} else {
info!("tbl_stats creation success");
}
Ok(())
}
async fn send_stats_report(
cfg: &MyConfig,
bcinfo: GetBlockchainInfoResult,
) -> Result<(), reqwest::Error> {
if cfg.send_stats {
debug!("sending report to welist");
let welist_url = env::var("WELIST_SERVER_URL")
.unwrap_or("https://welist.bitcoin-after.life".to_string());
if !is_valid_welist_url(&welist_url) {
warn!(
"Invalid or unsafe WELIST_SERVER_URL: {}. Skipping stats report.",
welist_url
);
return Ok(());
}
let client = rClient::new();
let url = format!("{}/ping", welist_url);
debug!("welist url: {}", url);
let chain = bcinfo.chain.to_string().to_lowercase();
let message = format!(
"{0}{1}{2}{3}{4}",
cfg.url, chain, bcinfo.blocks, bcinfo.median_time, bcinfo.best_block_hash
);
trace!("message to be sent: {}", message);
let sign = sign_message(cfg.ssl_key_path.as_str(), &message.as_str());
let response = client
.post(url)
.header("User-Agent", format!("bal-pusher/{}", VERSION))
.json(&json!(
{
"url": cfg.url,
"chain": chain,
"height": bcinfo.blocks,
"median_time": bcinfo.median_time,
"last_block_hash": bcinfo.best_block_hash,
"signature": sign,
}))
.send()
.await?;
if !response.status().is_success() {
warn!(
"Non-success response: {} {}",
response.status(),
response.status().canonical_reason().unwrap_or("")
);
}
let body = &(response.text().await?);
info!("Report to welist({})\tSent: {}", welist_url, body);
} else {
debug!("Not sending stats");
}
Ok(())
}
fn sign_message(private_key_path: &str, message: &str) -> String {
let key_data = fs::read(private_key_path).unwrap();
let private_key = PKey::private_key_from_pem(&key_data).unwrap();
let mut signer = Signer::new_without_digest(&private_key).unwrap();
let signature = signer.sign_oneshot_to_vec(message.as_bytes()).unwrap();
let signature_b64 = general_purpose::STANDARD.encode(&signature);
signature_b64
}
fn parse_env(cfg: &mut MyConfig) {
cfg.regtest = parse_env_netconfig(cfg, "regtest");
cfg.signet = parse_env_netconfig(cfg, "signet");
cfg.testnet = parse_env_netconfig(cfg, "testnet");
cfg.testnet4 = parse_env_netconfig(cfg, "testnet4");
drop(parse_env_netconfig(cfg, "bitcoin"));
}
fn parse_env_netconfig(cfg_lock: &mut MyConfig, chain: &str) -> NetworkParams {
//fn parse_env_netconfig(cfg_lock: &MutexGuard<MyConfig>, chain: &str) -> &NetworkParams{
let cfg = match chain {
"regtest" => &mut cfg_lock.regtest,
"signet" => &mut cfg_lock.signet,
"testnet" => &mut cfg_lock.testnet,
"testnet4" => &mut cfg_lock.testnet4,
&_ => &mut cfg_lock.mainnet,
};
match env::var(format!("BAL_PUSHER_{}_HOST", chain.to_uppercase())) {
Ok(value) => {
cfg.host = value;
}
Err(_) => {}
}
match env::var(format!("BAL_PUSHER_{}_PORT", chain.to_uppercase())) {
Ok(value) => match value.parse::<u64>() {
Ok(value) => match u16::try_from(value) {
Ok(port) => cfg.port = port,
Err(e) => {
error!(
"Port value {} exceeds u16 range for chain {}: {}",
value, chain, e
);
}
},
Err(_) => {}
},
Err(_) => {}
}
match env::var(format!("BAL_PUSHER_{}_DIR_PATH", chain.to_uppercase())) {
Ok(value) => {
cfg.dir_path = value;
}
Err(_) => {}
}
match env::var(format!("BAL_PUSHER_{}_DB_FIELD", chain.to_uppercase())) {
Ok(value) => {
cfg.db_field = value;
}
Err(_) => {}
}
match env::var(format!("BAL_PUSHER_{}_COOKIE_FILE", chain.to_uppercase())) {
Ok(value) => {
cfg.cookie_file = value;
}
Err(_) => {}
}
match env::var(format!("BAL_PUSHER_{}_RPC_USER", chain.to_uppercase())) {
Ok(value) => {
cfg.rpc_user = value;
}
Err(_) => {}
}
match env::var(format!("BAL_PUSHER_{}_RPC_PASSWORD", chain.to_uppercase())) {
Ok(value) => {
cfg.rpc_pass = value;
}
Err(_) => {}
}
println!(
"{}",
format!("BAL_PUSHER_{}_ZMQ_HASHBLOCK", chain.to_uppercase())
);
match env::var(format!("BAL_PUSHER_{}_ZMQ_HASHBLOCK", chain.to_uppercase())) {
Ok(value) => {
println!("value:{}", value);
cfg.zmq_listener = value;
}
Err(_) => {}
}
cfg.clone()
}
fn check_zmq_connection(endpoint: &str) -> bool {
trace!("check zmq connection");
let context = Context::new();
let socket = match context.socket(DEALER) {
Ok(sock) => sock,
Err(_) => return false,
};
if socket.connect(endpoint).is_err() {
return false;
}
// Try to send an empty message non-blocking
socket.send("", DONTWAIT).is_ok()
}
// Add this struct to monitor connection health
struct ConnectionMonitor {
last_message_time: Instant,
timeout: Duration,
consecutive_timeouts: u32,
max_consecutive_timeouts: u32,
}
impl ConnectionMonitor {
fn new(timeout_secs: u64, max_timeouts: u32) -> Self {
Self {
last_message_time: Instant::now(),
timeout: Duration::from_secs(timeout_secs),
consecutive_timeouts: 0,
max_consecutive_timeouts: max_timeouts,
}
}
fn update(&mut self) {
self.last_message_time = Instant::now();
self.consecutive_timeouts = 0;
}
fn check_connection(&mut self) -> ConnectionStatus {
let elapsed = self.last_message_time.elapsed();
if elapsed > self.timeout {
self.consecutive_timeouts += 1;
if self.consecutive_timeouts >= self.max_consecutive_timeouts {
ConnectionStatus::Lost(elapsed)
} else {
ConnectionStatus::Warning(elapsed)
}
} else {
ConnectionStatus::Healthy
}
}
fn reset(&mut self) {
self.consecutive_timeouts = 0;
self.last_message_time = Instant::now();
}
}
enum ConnectionStatus {
Healthy,
Warning(Duration),
Lost(Duration),
}
#[tokio::main]
async fn main() -> std::io::Result<()> {
env_logger::init();
let mut cfg = MyConfig::default();
let dbfile = env::var("BAL_PUSHER_DB_FILE").unwrap();
parse_env(&mut cfg);
let mut args = std::env::args();
let _exe_name = args.next().unwrap();
let arg_network = match args.next() {
Some(nargs) => nargs,
None => "bitcoin".to_string(),
};
let network = match arg_network.as_str() {
"testnet" => Network::Testnet,
"testnet4" => Network::Testnet4,
"signet" => Network::Signet,
"regtest" => Network::Regtest,
_ => Network::Bitcoin,
};
info!("Network: {}", arg_network);
let network_params = get_network_params(&cfg, network);
let context = Context::new();
let socket: Socket = context.socket(zmq::SUB).unwrap();
let zmq_address = network_params.zmq_listener.clone();
info!("zmq listening on: {}", zmq_address);
loop {
match socket.connect(&zmq_address) {
Ok(_) => break,
Err(e) => {
error!("ZMQ connect failed: {}, retrying in 5s...", e);
thread::sleep(Duration::from_secs(5));
}
}
}
match socket.set_subscribe(b"") {
Ok(_) => {}
Err(e) => {
error!("ZMQ subscribe failed: {}, exiting", e);
return Ok(());
}
}
let _ = main_result(&cfg, network_params).await;
info!("waiting new blocks..");
let mut last_seq: Vec<u8> = [0; 4].to_vec();
let mut counter = 0;
let max = 100;
socket.set_rcvtimeo(5000).unwrap(); // 5 seconds timeout
loop {
let message = match socket.recv_multipart(0) {
Ok(m) => m,
Err(e) => {
warn!("ZMQ recv timeout or error: {}, retrying...", e);
continue;
}
};
let topic = message[0].clone();
let body = message[1].clone();
let seq = message[2].clone();
last_seq = seq;
debug!(
"ZMQ:GET TOPIC: {}",
String::from_utf8(topic.clone()).expect("invalid topic")
);
trace!("ZMQ:GET BODY: {}", hex::encode(&body));
if topic == b"hashblock" {
info!("NEW BLOCK: {}", hex::encode(&body));
let _ = main_result(&cfg, network_params).await;
}
thread::sleep(Duration::from_millis(100)); // Sleep for 100ms
}
}
fn seq_to_str(seq: &Vec<u8>) -> String {
if seq.len() == 4 {
let mut rdr = Cursor::new(seq);
let sequence = rdr
.read_u32::<LittleEndian>()
.expect("Failed to read integer");
return sequence.to_string();
}
"Unknown".to_string()
}
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