+pub(crate) fn parse_startup_args() -> Result<LdkUserInfo, ()> {
+ if env::args().len() < 3 {
+ println!("ldk-tutorial-node requires 3 arguments: `cargo run <bitcoind-rpc-username>:<bitcoind-rpc-password>@<bitcoind-rpc-host>:<bitcoind-rpc-port> ldk_storage_directory_path [<ldk-incoming-peer-listening-port>] [bitcoin-network]`");
+ return Err(());
+ }
+ let bitcoind_rpc_info = env::args().skip(1).next().unwrap();
+ let bitcoind_rpc_info_parts: Vec<&str> = bitcoind_rpc_info.split("@").collect();
+ if bitcoind_rpc_info_parts.len() != 2 {
+ println!("ERROR: bad bitcoind RPC URL provided");
+ return Err(());
+ }
+ let rpc_user_and_password: Vec<&str> = bitcoind_rpc_info_parts[0].split(":").collect();
+ if rpc_user_and_password.len() != 2 {
+ println!("ERROR: bad bitcoind RPC username/password combo provided");
+ return Err(());
+ }
+ let bitcoind_rpc_username = rpc_user_and_password[0].to_string();
+ let bitcoind_rpc_password = rpc_user_and_password[1].to_string();
+ let bitcoind_rpc_path: Vec<&str> = bitcoind_rpc_info_parts[1].split(":").collect();
+ if bitcoind_rpc_path.len() != 2 {
+ println!("ERROR: bad bitcoind RPC path provided");
+ return Err(());
+ }
+ let bitcoind_rpc_host = bitcoind_rpc_path[0].to_string();
+ let bitcoind_rpc_port = bitcoind_rpc_path[1].parse::<u16>().unwrap();
+
+ let ldk_storage_dir_path = env::args().skip(2).next().unwrap();
+
+ let mut ldk_peer_port_set = true;
+ let ldk_peer_listening_port: u16 = match env::args().skip(3).next().map(|p| p.parse()) {
+ Some(Ok(p)) => p,
+ Some(Err(e)) => panic!("{}", e),
+ None => {
+ ldk_peer_port_set = false;
+ 9735
+ }
+ };
+
+ let arg_idx = match ldk_peer_port_set {
+ true => 4,
+ false => 3,
+ };
+ let network: Network = match env::args().skip(arg_idx).next().as_ref().map(String::as_str) {
+ Some("testnet") => Network::Testnet,
+ Some("regtest") => Network::Regtest,
+ Some(_) => panic!("Unsupported network provided. Options are: `regtest`, `testnet`"),
+ None => Network::Testnet,
+ };
+ Ok(LdkUserInfo {
+ bitcoind_rpc_username,
+ bitcoind_rpc_password,
+ bitcoind_rpc_host,
+ bitcoind_rpc_port,
+ ldk_storage_dir_path,
+ ldk_peer_listening_port,
+ network,
+ })
+}
+
+pub(crate) async fn poll_for_user_input(
+ peer_manager: Arc<PeerManager>, channel_manager: Arc<ChannelManager>,
+ keys_manager: Arc<KeysManager>,
+ router: Arc<NetGraphMsgHandler<Arc<dyn chain::Access + Send + Sync>, Arc<FilesystemLogger>>>,
+ inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage,
+ event_notifier: mpsc::Sender<()>, ldk_data_dir: String, logger: Arc<FilesystemLogger>,
+ network: Network,
+) {
+ println!("LDK startup successful. To view available commands: \"help\".");
+ println!("LDK logs are available at <your-supplied-ldk-data-dir-path>/.ldk/logs");
+ println!("Local Node ID is {}.", channel_manager.get_our_node_id());
+ let stdin = io::stdin();
+ print!("> ");
+ io::stdout().flush().unwrap(); // Without flushing, the `>` doesn't print
+ for line in stdin.lock().lines() {
+ let _ = event_notifier.try_send(());
+ let line = line.unwrap();
+ let mut words = line.split_whitespace();
+ if let Some(word) = words.next() {
+ match word {
+ "help" => help(),
+ "openchannel" => {
+ let peer_pubkey_and_ip_addr = words.next();
+ let channel_value_sat = words.next();
+ if peer_pubkey_and_ip_addr.is_none() || channel_value_sat.is_none() {
+ println!("ERROR: openchannel has 2 required arguments: `openchannel pubkey@host:port channel_amt_satoshis` [--public]");
+ print!("> ");
+ io::stdout().flush().unwrap();
+ continue;
+ }
+ let peer_pubkey_and_ip_addr = peer_pubkey_and_ip_addr.unwrap();
+ let (pubkey, peer_addr) =
+ match parse_peer_info(peer_pubkey_and_ip_addr.to_string()) {
+ Ok(info) => info,
+ Err(e) => {
+ println!("{:?}", e.into_inner().unwrap());
+ print!("> ");
+ io::stdout().flush().unwrap();
+ continue;
+ }
+ };
+
+ let chan_amt_sat: Result<u64, _> = channel_value_sat.unwrap().parse();
+ if chan_amt_sat.is_err() {
+ println!("ERROR: channel amount must be a number");
+ print!("> ");
+ io::stdout().flush().unwrap();
+ continue;
+ }
+
+ if connect_peer_if_necessary(
+ pubkey,
+ peer_addr,
+ peer_manager.clone(),
+ event_notifier.clone(),
+ )
+ .is_err()
+ {
+ print!("> ");
+ io::stdout().flush().unwrap();
+ continue;
+ };
+
+ let announce_channel = match words.next() {
+ Some("--public") | Some("--public=true") => true,
+ Some("--public=false") => false,
+ Some(_) => {
+ println!("ERROR: invalid `--public` command format. Valid formats: `--public`, `--public=true` `--public=false`");
+ print!("> ");
+ io::stdout().flush().unwrap();
+ continue;
+ }
+ None => false,
+ };
+
+ if open_channel(
+ pubkey,
+ chan_amt_sat.unwrap(),
+ announce_channel,
+ channel_manager.clone(),
+ )
+ .is_ok()
+ {
+ let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone());
+ let _ = disk::persist_channel_peer(
+ Path::new(&peer_data_path),
+ peer_pubkey_and_ip_addr,
+ );
+ }
+ }
+ "sendpayment" => {
+ let invoice_str = words.next();
+ if invoice_str.is_none() {
+ println!("ERROR: sendpayment requires an invoice: `sendpayment <invoice>`");
+ print!("> ");
+ io::stdout().flush().unwrap();
+ continue;
+ }
+
+ let invoice = match Invoice::from_str(invoice_str.unwrap()) {
+ Ok(inv) => inv,
+ Err(e) => {
+ println!("ERROR: invalid invoice: {:?}", e);
+ print!("> ");
+ io::stdout().flush().unwrap();
+ continue;
+ }
+ };
+ let mut route_hints = invoice.routes().clone();
+ let mut last_hops = Vec::new();
+ for hint in route_hints.drain(..) {
+ last_hops.push(hint[hint.len() - 1].clone());
+ }
+
+ let amt_pico_btc = invoice.amount_pico_btc();
+ if amt_pico_btc.is_none() {
+ println!("ERROR: invalid invoice: must contain amount to pay");
+ print!("> ");
+ io::stdout().flush().unwrap();
+ continue;
+ }
+ let amt_msat = amt_pico_btc.unwrap() / 10;
+
+ let payee_pubkey = invoice.recover_payee_pub_key();
+ let final_cltv = invoice.min_final_cltv_expiry() as u32;
+
+ let mut payment_hash = PaymentHash([0; 32]);
+ payment_hash.0.copy_from_slice(&invoice.payment_hash().as_ref()[0..32]);
+
+ let payment_secret = match invoice.payment_secret() {
+ Some(secret) => {
+ let mut payment_secret = PaymentSecret([0; 32]);
+ payment_secret.0.copy_from_slice(&secret.0);
+ Some(payment_secret)
+ }
+ None => None,
+ };
+
+ let invoice_features = match invoice.features() {
+ Some(feat) => Some(feat.clone()),
+ None => None,
+ };
+
+ send_payment(
+ payee_pubkey,
+ amt_msat,
+ final_cltv,
+ payment_hash,
+ payment_secret,
+ invoice_features,
+ last_hops,
+ router.clone(),
+ channel_manager.clone(),
+ outbound_payments.clone(),
+ logger.clone(),
+ );
+ }
+ "getinvoice" => {
+ let amt_str = words.next();
+ if amt_str.is_none() {
+ println!("ERROR: getinvoice requires an amount in millisatoshis");
+ print!("> ");
+ io::stdout().flush().unwrap();
+ continue;
+ }
+
+ let amt_msat: Result<u64, _> = amt_str.unwrap().parse();
+ if amt_msat.is_err() {
+ println!("ERROR: getinvoice provided payment amount was not a number");
+ print!("> ");
+ io::stdout().flush().unwrap();
+ continue;
+ }
+ get_invoice(
+ amt_msat.unwrap(),
+ inbound_payments.clone(),
+ channel_manager.clone(),
+ keys_manager.clone(),
+ network,
+ );
+ }
+ "connectpeer" => {
+ let peer_pubkey_and_ip_addr = words.next();
+ if peer_pubkey_and_ip_addr.is_none() {
+ println!("ERROR: connectpeer requires peer connection info: `connectpeer pubkey@host:port`");
+ print!("> ");
+ io::stdout().flush().unwrap();
+ continue;
+ }
+ let (pubkey, peer_addr) =
+ match parse_peer_info(peer_pubkey_and_ip_addr.unwrap().to_string()) {
+ Ok(info) => info,
+ Err(e) => {
+ println!("{:?}", e.into_inner().unwrap());
+ print!("> ");
+ io::stdout().flush().unwrap();
+ continue;
+ }
+ };
+ if connect_peer_if_necessary(
+ pubkey,
+ peer_addr,
+ peer_manager.clone(),
+ event_notifier.clone(),
+ )
+ .is_ok()
+ {
+ println!("SUCCESS: connected to peer {}", pubkey);
+ }
+ }
+ "listchannels" => list_channels(channel_manager.clone()),
+ "listpayments" => {
+ list_payments(inbound_payments.clone(), outbound_payments.clone())
+ }
+ "closechannel" => {
+ let channel_id_str = words.next();
+ if channel_id_str.is_none() {
+ println!("ERROR: closechannel requires a channel ID: `closechannel <channel_id>`");
+ print!("> ");
+ io::stdout().flush().unwrap();
+ continue;
+ }
+ let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
+ if channel_id_vec.is_none() {
+ println!("ERROR: couldn't parse channel_id as hex");
+ print!("> ");
+ io::stdout().flush().unwrap();
+ continue;
+ }
+ let mut channel_id = [0; 32];
+ channel_id.copy_from_slice(&channel_id_vec.unwrap());
+ close_channel(channel_id, channel_manager.clone());
+ }
+ "forceclosechannel" => {
+ let channel_id_str = words.next();
+ if channel_id_str.is_none() {
+ println!("ERROR: forceclosechannel requires a channel ID: `forceclosechannel <channel_id>`");
+ print!("> ");
+ io::stdout().flush().unwrap();
+ continue;
+ }
+ let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
+ if channel_id_vec.is_none() {
+ println!("ERROR: couldn't parse channel_id as hex");
+ print!("> ");
+ io::stdout().flush().unwrap();
+ continue;
+ }
+ let mut channel_id = [0; 32];
+ channel_id.copy_from_slice(&channel_id_vec.unwrap());
+ force_close_channel(channel_id, channel_manager.clone());
+ }
+ "nodeinfo" => node_info(channel_manager.clone(), peer_manager.clone()),
+ "listpeers" => list_peers(peer_manager.clone()),
+ _ => println!("Unknown command. See `\"help\" for available commands."),
+ }
+ }
+ print!("> ");
+ io::stdout().flush().unwrap();
+ }
+}
+
+fn help() {
+ println!("openchannel pubkey@host:port <channel_amt_satoshis>");
+ println!("sendpayment <invoice>");
+ println!("getinvoice <amt_in_millisatoshis>");
+ println!("connectpeer pubkey@host:port");
+ println!("listchannels");
+ println!("listpayments");
+ println!("closechannel <channel_id>");
+ println!("forceclosechannel <channel_id>");
+}
+
+fn node_info(channel_manager: Arc<ChannelManager>, peer_manager: Arc<PeerManager>) {
+ println!("\t{{");
+ println!("\t\t node_pubkey: {}", channel_manager.get_our_node_id());
+ println!("\t\t num_channels: {}", channel_manager.list_channels().len());
+ println!("\t\t num_usable_channels: {}", channel_manager.list_usable_channels().len());
+ println!("\t\t num_peers: {}", peer_manager.get_peer_node_ids().len());
+ println!("\t}},");