_ Git - ldk-sample/blob - src/cli.rs

   1 use crate::disk;
   2 use crate::hex_utils;
   3 use crate::{
   4         ChannelManager, FilesystemLogger, HTLCStatus, MillisatAmount, PaymentInfo, PaymentInfoStorage,
   5         PeerManager,
   6 };
   7 use bitcoin::hashes::Hash;
   8 use bitcoin::network::constants::Network;
   9 use bitcoin::secp256k1::key::PublicKey;
  10 use lightning::chain;
  11 use lightning::chain::keysinterface::KeysManager;
  12 use lightning::ln::features::InvoiceFeatures;
  13 use lightning::ln::msgs::NetAddress;
  14 use lightning::ln::{PaymentHash, PaymentSecret};
  15 use lightning::routing::network_graph::NetGraphMsgHandler;
  16 use lightning::routing::router;
  17 use lightning::routing::router::RouteHint;
  18 use lightning::util::config::{ChannelConfig, ChannelHandshakeLimits, UserConfig};
  19 use lightning_invoice::{utils, Currency, Invoice};
  20 use std::env;
  21 use std::io;
  22 use std::io::{BufRead, Write};
  23 use std::net::{IpAddr, SocketAddr, ToSocketAddrs};
  24 use std::ops::Deref;
  25 use std::path::Path;
  26 use std::str::FromStr;
  27 use std::sync::Arc;
  28 use std::time::Duration;
  29
  30 pub(crate) struct LdkUserInfo {
  31         pub(crate) bitcoind_rpc_username: String,
  32         pub(crate) bitcoind_rpc_password: String,
  33         pub(crate) bitcoind_rpc_port: u16,
  34         pub(crate) bitcoind_rpc_host: String,
  35         pub(crate) ldk_storage_dir_path: String,
  36         pub(crate) ldk_peer_listening_port: u16,
  37         pub(crate) ldk_announced_listen_addr: Vec<NetAddress>,
  38         pub(crate) ldk_announced_node_name: [u8; 32],
  39         pub(crate) network: Network,
  40 }
  41
  42 pub(crate) fn parse_startup_args() -> Result<LdkUserInfo, ()> {
  43         if env::args().len() < 3 {
  44                 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] [announced-node-name announced-listen-addr*]`");
  45                 return Err(());
  46         }
  47         let bitcoind_rpc_info = env::args().skip(1).next().unwrap();
  48         let bitcoind_rpc_info_parts: Vec<&str> = bitcoind_rpc_info.split("@").collect();
  49         if bitcoind_rpc_info_parts.len() != 2 {
  50                 println!("ERROR: bad bitcoind RPC URL provided");
  51                 return Err(());
  52         }
  53         let rpc_user_and_password: Vec<&str> = bitcoind_rpc_info_parts[0].split(":").collect();
  54         if rpc_user_and_password.len() != 2 {
  55                 println!("ERROR: bad bitcoind RPC username/password combo provided");
  56                 return Err(());
  57         }
  58         let bitcoind_rpc_username = rpc_user_and_password[0].to_string();
  59         let bitcoind_rpc_password = rpc_user_and_password[1].to_string();
  60         let bitcoind_rpc_path: Vec<&str> = bitcoind_rpc_info_parts[1].split(":").collect();
  61         if bitcoind_rpc_path.len() != 2 {
  62                 println!("ERROR: bad bitcoind RPC path provided");
  63                 return Err(());
  64         }
  65         let bitcoind_rpc_host = bitcoind_rpc_path[0].to_string();
  66         let bitcoind_rpc_port = bitcoind_rpc_path[1].parse::<u16>().unwrap();
  67
  68         let ldk_storage_dir_path = env::args().skip(2).next().unwrap();
  69
  70         let mut ldk_peer_port_set = true;
  71         let ldk_peer_listening_port: u16 = match env::args().skip(3).next().map(|p| p.parse()) {
  72                 Some(Ok(p)) => p,
  73                 Some(Err(e)) => panic!("{}", e),
  74                 None => {
  75                         ldk_peer_port_set = false;
  76                         9735
  77                 }
  78         };
  79
  80         let mut arg_idx = match ldk_peer_port_set {
  81                 true => 4,
  82                 false => 3,
  83         };
  84         let network: Network = match env::args().skip(arg_idx).next().as_ref().map(String::as_str) {
  85                 Some("testnet") => Network::Testnet,
  86                 Some("regtest") => Network::Regtest,
  87                 Some(_) => panic!("Unsupported network provided. Options are: `regtest`, `testnet`"),
  88                 None => Network::Testnet,
  89         };
  90
  91         let ldk_announced_node_name = match env::args().skip(arg_idx + 1).next().as_ref() {
  92                 Some(s) => {
  93                         if s.len() > 32 {
  94                                 panic!("Node Alias can not be longer than 32 bytes");
  95                         }
  96                         arg_idx += 1;
  97                         let mut bytes = [0; 32];
  98                         bytes[..s.len()].copy_from_slice(s.as_bytes());
  99                         bytes
 100                 }
 101                 None => [0; 32],
 102         };
 103
 104         let mut ldk_announced_listen_addr = Vec::new();
 105         loop {
 106                 match env::args().skip(arg_idx + 1).next().as_ref() {
 107                         Some(s) => match IpAddr::from_str(s) {
 108                                 Ok(IpAddr::V4(a)) => {
 109                                         ldk_announced_listen_addr
 110                                                 .push(NetAddress::IPv4 { addr: a.octets(), port: ldk_peer_listening_port });
 111                                         arg_idx += 1;
 112                                 }
 113                                 Ok(IpAddr::V6(a)) => {
 114                                         ldk_announced_listen_addr
 115                                                 .push(NetAddress::IPv6 { addr: a.octets(), port: ldk_peer_listening_port });
 116                                         arg_idx += 1;
 117                                 }
 118                                 Err(_) => panic!("Failed to parse announced-listen-addr into an IP address"),
 119                         },
 120                         None => break,
 121                 }
 122         }
 123
 124         Ok(LdkUserInfo {
 125                 bitcoind_rpc_username,
 126                 bitcoind_rpc_password,
 127                 bitcoind_rpc_host,
 128                 bitcoind_rpc_port,
 129                 ldk_storage_dir_path,
 130                 ldk_peer_listening_port,
 131                 ldk_announced_listen_addr,
 132                 ldk_announced_node_name,
 133                 network,
 134         })
 135 }
 136
 137 pub(crate) async fn poll_for_user_input(
 138         peer_manager: Arc<PeerManager>, channel_manager: Arc<ChannelManager>,
 139         keys_manager: Arc<KeysManager>,
 140         router: Arc<NetGraphMsgHandler<Arc<dyn chain::Access + Send + Sync>, Arc<FilesystemLogger>>>,
 141         inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage,
 142         ldk_data_dir: String, logger: Arc<FilesystemLogger>, network: Network,
 143 ) {
 144         println!("LDK startup successful. To view available commands: \"help\".");
 145         println!("LDK logs are available at <your-supplied-ldk-data-dir-path>/.ldk/logs");
 146         println!("Local Node ID is {}.", channel_manager.get_our_node_id());
 147         let stdin = io::stdin();
 148         print!("> ");
 149         io::stdout().flush().unwrap(); // Without flushing, the `>` doesn't print
 150         for line in stdin.lock().lines() {
 151                 let line = line.unwrap();
 152                 let mut words = line.split_whitespace();
 153                 if let Some(word) = words.next() {
 154                         match word {
 155                                 "help" => help(),
 156                                 "openchannel" => {
 157                                         let peer_pubkey_and_ip_addr = words.next();
 158                                         let channel_value_sat = words.next();
 159                                         if peer_pubkey_and_ip_addr.is_none() || channel_value_sat.is_none() {
 160                                                 println!("ERROR: openchannel has 2 required arguments: `openchannel pubkey@host:port channel_amt_satoshis` [--public]");
 161                                                 print!("> ");
 162                                                 io::stdout().flush().unwrap();
 163                                                 continue;
 164                                         }
 165                                         let peer_pubkey_and_ip_addr = peer_pubkey_and_ip_addr.unwrap();
 166                                         let (pubkey, peer_addr) =
 167                                                 match parse_peer_info(peer_pubkey_and_ip_addr.to_string()) {
 168                                                         Ok(info) => info,
 169                                                         Err(e) => {
 170                                                                 println!("{:?}", e.into_inner().unwrap());
 171                                                                 print!("> ");
 172                                                                 io::stdout().flush().unwrap();
 173                                                                 continue;
 174                                                         }
 175                                                 };
 176
 177                                         let chan_amt_sat: Result<u64, _> = channel_value_sat.unwrap().parse();
 178                                         if chan_amt_sat.is_err() {
 179                                                 println!("ERROR: channel amount must be a number");
 180                                                 print!("> ");
 181                                                 io::stdout().flush().unwrap();
 182                                                 continue;
 183                                         }
 184
 185                                         if connect_peer_if_necessary(pubkey, peer_addr, peer_manager.clone())
 186                                                 .await
 187                                                 .is_err()
 188                                         {
 189                                                 print!("> ");
 190                                                 io::stdout().flush().unwrap();
 191                                                 continue;
 192                                         };
 193
 194                                         let announce_channel = match words.next() {
 195                                                 Some("--public") | Some("--public=true") => true,
 196                                                 Some("--public=false") => false,
 197                                                 Some(_) => {
 198                                                         println!("ERROR: invalid `--public` command format. Valid formats: `--public`, `--public=true` `--public=false`");
 199                                                         print!("> ");
 200                                                         io::stdout().flush().unwrap();
 201                                                         continue;
 202                                                 }
 203                                                 None => false,
 204                                         };
 205
 206                                         if open_channel(
 207                                                 pubkey,
 208                                                 chan_amt_sat.unwrap(),
 209                                                 announce_channel,
 210                                                 channel_manager.clone(),
 211                                         )
 212                                         .is_ok()
 213                                         {
 214                                                 let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone());
 215                                                 let _ = disk::persist_channel_peer(
 216                                                         Path::new(&peer_data_path),
 217                                                         peer_pubkey_and_ip_addr,
 218                                                 );
 219                                         }
 220                                 }
 221                                 "sendpayment" => {
 222                                         let invoice_str = words.next();
 223                                         if invoice_str.is_none() {
 224                                                 println!("ERROR: sendpayment requires an invoice: `sendpayment <invoice>`");
 225                                                 print!("> ");
 226                                                 io::stdout().flush().unwrap();
 227                                                 continue;
 228                                         }
 229
 230                                         let invoice = match Invoice::from_str(invoice_str.unwrap()) {
 231                                                 Ok(inv) => inv,
 232                                                 Err(e) => {
 233                                                         println!("ERROR: invalid invoice: {:?}", e);
 234                                                         print!("> ");
 235                                                         io::stdout().flush().unwrap();
 236                                                         continue;
 237                                                 }
 238                                         };
 239                                         let last_hops = invoice.route_hints();
 240
 241                                         let amt_pico_btc = invoice.amount_pico_btc();
 242                                         if amt_pico_btc.is_none() {
 243                                                 println!("ERROR: invalid invoice: must contain amount to pay");
 244                                                 print!("> ");
 245                                                 io::stdout().flush().unwrap();
 246                                                 continue;
 247                                         }
 248                                         let amt_msat = amt_pico_btc.unwrap() / 10;
 249
 250                                         let payee_pubkey = invoice.recover_payee_pub_key();
 251                                         let final_cltv = invoice.min_final_cltv_expiry() as u32;
 252                                         let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
 253                                         let payment_secret = invoice.payment_secret().cloned();
 254                                         let invoice_features = invoice.features().cloned();
 255
 256                                         send_payment(
 257                                                 payee_pubkey,
 258                                                 amt_msat,
 259                                                 final_cltv,
 260                                                 payment_hash,
 261                                                 payment_secret,
 262                                                 invoice_features,
 263                                                 last_hops,
 264                                                 router.clone(),
 265                                                 channel_manager.clone(),
 266                                                 outbound_payments.clone(),
 267                                                 logger.clone(),
 268                                         );
 269                                 }
 270                                 "getinvoice" => {
 271                                         let amt_str = words.next();
 272                                         if amt_str.is_none() {
 273                                                 println!("ERROR: getinvoice requires an amount in millisatoshis");
 274                                                 print!("> ");
 275                                                 io::stdout().flush().unwrap();
 276                                                 continue;
 277                                         }
 278
 279                                         let amt_msat: Result<u64, _> = amt_str.unwrap().parse();
 280                                         if amt_msat.is_err() {
 281                                                 println!("ERROR: getinvoice provided payment amount was not a number");
 282                                                 print!("> ");
 283                                                 io::stdout().flush().unwrap();
 284                                                 continue;
 285                                         }
 286                                         get_invoice(
 287                                                 amt_msat.unwrap(),
 288                                                 inbound_payments.clone(),
 289                                                 channel_manager.clone(),
 290                                                 keys_manager.clone(),
 291                                                 network,
 292                                         );
 293                                 }
 294                                 "connectpeer" => {
 295                                         let peer_pubkey_and_ip_addr = words.next();
 296                                         if peer_pubkey_and_ip_addr.is_none() {
 297                                                 println!("ERROR: connectpeer requires peer connection info: `connectpeer pubkey@host:port`");
 298                                                 print!("> ");
 299                                                 io::stdout().flush().unwrap();
 300                                                 continue;
 301                                         }
 302                                         let (pubkey, peer_addr) =
 303                                                 match parse_peer_info(peer_pubkey_and_ip_addr.unwrap().to_string()) {
 304                                                         Ok(info) => info,
 305                                                         Err(e) => {
 306                                                                 println!("{:?}", e.into_inner().unwrap());
 307                                                                 print!("> ");
 308                                                                 io::stdout().flush().unwrap();
 309                                                                 continue;
 310                                                         }
 311                                                 };
 312                                         if connect_peer_if_necessary(pubkey, peer_addr, peer_manager.clone())
 313                                                 .await
 314                                                 .is_ok()
 315                                         {
 316                                                 println!("SUCCESS: connected to peer {}", pubkey);
 317                                         }
 318                                 }
 319                                 "listchannels" => list_channels(channel_manager.clone()),
 320                                 "listpayments" => {
 321                                         list_payments(inbound_payments.clone(), outbound_payments.clone())
 322                                 }
 323                                 "closechannel" => {
 324                                         let channel_id_str = words.next();
 325                                         if channel_id_str.is_none() {
 326                                                 println!("ERROR: closechannel requires a channel ID: `closechannel <channel_id>`");
 327                                                 print!("> ");
 328                                                 io::stdout().flush().unwrap();
 329                                                 continue;
 330                                         }
 331                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 332                                         if channel_id_vec.is_none() {
 333                                                 println!("ERROR: couldn't parse channel_id as hex");
 334                                                 print!("> ");
 335                                                 io::stdout().flush().unwrap();
 336                                                 continue;
 337                                         }
 338                                         let mut channel_id = [0; 32];
 339                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 340                                         close_channel(channel_id, channel_manager.clone());
 341                                 }
 342                                 "forceclosechannel" => {
 343                                         let channel_id_str = words.next();
 344                                         if channel_id_str.is_none() {
 345                                                 println!("ERROR: forceclosechannel requires a channel ID: `forceclosechannel <channel_id>`");
 346                                                 print!("> ");
 347                                                 io::stdout().flush().unwrap();
 348                                                 continue;
 349                                         }
 350                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 351                                         if channel_id_vec.is_none() {
 352                                                 println!("ERROR: couldn't parse channel_id as hex");
 353                                                 print!("> ");
 354                                                 io::stdout().flush().unwrap();
 355                                                 continue;
 356                                         }
 357                                         let mut channel_id = [0; 32];
 358                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 359                                         force_close_channel(channel_id, channel_manager.clone());
 360                                 }
 361                                 "nodeinfo" => node_info(channel_manager.clone(), peer_manager.clone()),
 362                                 "listpeers" => list_peers(peer_manager.clone()),
 363                                 _ => println!("Unknown command. See `\"help\" for available commands."),
 364                         }
 365                 }
 366                 print!("> ");
 367                 io::stdout().flush().unwrap();
 368         }
 369 }
 370
 371 fn help() {
 372         println!("openchannel pubkey@host:port <amt_satoshis>");
 373         println!("sendpayment <invoice>");
 374         println!("getinvoice <amt_millisatoshis>");
 375         println!("connectpeer pubkey@host:port");
 376         println!("listchannels");
 377         println!("listpayments");
 378         println!("closechannel <channel_id>");
 379         println!("forceclosechannel <channel_id>");
 380         println!("nodeinfo");
 381         println!("listpeers");
 382 }
 383
 384 fn node_info(channel_manager: Arc<ChannelManager>, peer_manager: Arc<PeerManager>) {
 385         println!("\t{{");
 386         println!("\t\t node_pubkey: {}", channel_manager.get_our_node_id());
 387         println!("\t\t num_channels: {}", channel_manager.list_channels().len());
 388         println!("\t\t num_usable_channels: {}", channel_manager.list_usable_channels().len());
 389         println!("\t\t num_peers: {}", peer_manager.get_peer_node_ids().len());
 390         println!("\t}},");
 391 }
 392
 393 fn list_peers(peer_manager: Arc<PeerManager>) {
 394         println!("\t{{");
 395         for pubkey in peer_manager.get_peer_node_ids() {
 396                 println!("\t\t pubkey: {}", pubkey);
 397         }
 398         println!("\t}},");
 399 }
 400
 401 fn list_channels(channel_manager: Arc<ChannelManager>) {
 402         print!("[");
 403         for chan_info in channel_manager.list_channels() {
 404                 println!("");
 405                 println!("\t{{");
 406                 println!("\t\tchannel_id: {},", hex_utils::hex_str(&chan_info.channel_id[..]));
 407                 if let Some(funding_txo) = chan_info.funding_txo {
 408                         println!("\t\tfunding_txid: {},", funding_txo.txid);
 409                 }
 410                 println!(
 411                         "\t\tpeer_pubkey: {},",
 412                         hex_utils::hex_str(&chan_info.counterparty.node_id.serialize())
 413                 );
 414                 if let Some(id) = chan_info.short_channel_id {
 415                         println!("\t\tshort_channel_id: {},", id);
 416                 }
 417                 println!("\t\tis_confirmed_onchain: {},", chan_info.is_funding_locked);
 418                 println!("\t\tchannel_value_satoshis: {},", chan_info.channel_value_satoshis);
 419                 if chan_info.is_usable {
 420                         println!("\t\tavailable_balance_for_send_msat: {},", chan_info.outbound_capacity_msat);
 421                         println!("\t\tavailable_balance_for_recv_msat: {},", chan_info.inbound_capacity_msat);
 422                 }
 423                 println!("\t\tchannel_can_send_payments: {},", chan_info.is_usable);
 424                 println!("\t\tpublic: {},", chan_info.is_public);
 425                 println!("\t}},");
 426         }
 427         println!("]");
 428 }
 429
 430 fn list_payments(inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage) {
 431         let inbound = inbound_payments.lock().unwrap();
 432         let outbound = outbound_payments.lock().unwrap();
 433         print!("[");
 434         for (payment_hash, payment_info) in inbound.deref() {
 435                 println!("");
 436                 println!("\t{{");
 437                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 438                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 439                 println!("\t\thtlc_direction: inbound,");
 440                 println!(
 441                         "\t\thtlc_status: {},",
 442                         match payment_info.status {
 443                                 HTLCStatus::Pending => "pending",
 444                                 HTLCStatus::Succeeded => "succeeded",
 445                                 HTLCStatus::Failed => "failed",
 446                         }
 447                 );
 448
 449                 println!("\t}},");
 450         }
 451
 452         for (payment_hash, payment_info) in outbound.deref() {
 453                 println!("");
 454                 println!("\t{{");
 455                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 456                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 457                 println!("\t\thtlc_direction: outbound,");
 458                 println!(
 459                         "\t\thtlc_status: {},",
 460                         match payment_info.status {
 461                                 HTLCStatus::Pending => "pending",
 462                                 HTLCStatus::Succeeded => "succeeded",
 463                                 HTLCStatus::Failed => "failed",
 464                         }
 465                 );
 466
 467                 println!("\t}},");
 468         }
 469         println!("]");
 470 }
 471
 472 pub(crate) async fn connect_peer_if_necessary(
 473         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 474 ) -> Result<(), ()> {
 475         for node_pubkey in peer_manager.get_peer_node_ids() {
 476                 if node_pubkey == pubkey {
 477                         return Ok(());
 478                 }
 479         }
 480         match lightning_net_tokio::connect_outbound(Arc::clone(&peer_manager), pubkey, peer_addr).await
 481         {
 482                 Some(connection_closed_future) => {
 483                         let mut connection_closed_future = Box::pin(connection_closed_future);
 484                         loop {
 485                                 match futures::poll!(&mut connection_closed_future) {
 486                                         std::task::Poll::Ready(_) => {
 487                                                 println!("ERROR: Peer disconnected before we finished the handshake");
 488                                                 return Err(());
 489                                         }
 490                                         std::task::Poll::Pending => {}
 491                                 }
 492                                 // Avoid blocking the tokio context by sleeping a bit
 493                                 match peer_manager.get_peer_node_ids().iter().find(|id| **id == pubkey) {
 494                                         Some(_) => break,
 495                                         None => tokio::time::sleep(Duration::from_millis(10)).await,
 496                                 }
 497                         }
 498                 }
 499                 None => {
 500                         println!("ERROR: failed to connect to peer");
 501                         return Err(());
 502                 }
 503         }
 504         Ok(())
 505 }
 506
 507 fn open_channel(
 508         peer_pubkey: PublicKey, channel_amt_sat: u64, announced_channel: bool,
 509         channel_manager: Arc<ChannelManager>,
 510 ) -> Result<(), ()> {
 511         let config = UserConfig {
 512                 peer_channel_config_limits: ChannelHandshakeLimits {
 513                         // lnd's max to_self_delay is 2016, so we want to be compatible.
 514                         their_to_self_delay: 2016,
 515                         ..Default::default()
 516                 },
 517                 channel_options: ChannelConfig { announced_channel, ..Default::default() },
 518                 ..Default::default()
 519         };
 520
 521         match channel_manager.create_channel(peer_pubkey, channel_amt_sat, 0, 0, Some(config)) {
 522                 Ok(_) => {
 523                         println!("EVENT: initiated channel with peer {}. ", peer_pubkey);
 524                         return Ok(());
 525                 }
 526                 Err(e) => {
 527                         println!("ERROR: failed to open channel: {:?}", e);
 528                         return Err(());
 529                 }
 530         }
 531 }
 532
 533 fn send_payment(
 534         payee: PublicKey, amt_msat: u64, final_cltv: u32, payment_hash: PaymentHash,
 535         payment_secret: Option<PaymentSecret>, payee_features: Option<InvoiceFeatures>,
 536         route_hints: Vec<&RouteHint>,
 537         router: Arc<NetGraphMsgHandler<Arc<dyn chain::Access + Send + Sync>, Arc<FilesystemLogger>>>,
 538         channel_manager: Arc<ChannelManager>, payment_storage: PaymentInfoStorage,
 539         logger: Arc<FilesystemLogger>,
 540 ) {
 541         let network_graph = router.network_graph.read().unwrap();
 542         let first_hops = channel_manager.list_usable_channels();
 543         let payer_pubkey = channel_manager.get_our_node_id();
 544
 545         let route = router::get_route(
 546                 &payer_pubkey,
 547                 &network_graph,
 548                 &payee,
 549                 payee_features,
 550                 Some(&first_hops.iter().collect::<Vec<_>>()),
 551                 &route_hints,
 552                 amt_msat,
 553                 final_cltv,
 554                 logger,
 555         );
 556         if let Err(e) = route {
 557                 println!("ERROR: failed to find route: {}", e.err);
 558                 return;
 559         }
 560         let status = match channel_manager.send_payment(&route.unwrap(), payment_hash, &payment_secret)
 561         {
 562                 Ok(()) => {
 563                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee);
 564                         HTLCStatus::Pending
 565                 }
 566                 Err(e) => {
 567                         println!("ERROR: failed to send payment: {:?}", e);
 568                         HTLCStatus::Failed
 569                 }
 570         };
 571         let mut payments = payment_storage.lock().unwrap();
 572         payments.insert(
 573                 payment_hash,
 574                 PaymentInfo {
 575                         preimage: None,
 576                         secret: payment_secret,
 577                         status,
 578                         amt_msat: MillisatAmount(Some(amt_msat)),
 579                 },
 580         );
 581 }
 582
 583 fn get_invoice(
 584         amt_msat: u64, payment_storage: PaymentInfoStorage, channel_manager: Arc<ChannelManager>,
 585         keys_manager: Arc<KeysManager>, network: Network,
 586 ) {
 587         let mut payments = payment_storage.lock().unwrap();
 588         let currency = match network {
 589                 Network::Bitcoin => Currency::Bitcoin,
 590                 Network::Testnet => Currency::BitcoinTestnet,
 591                 Network::Regtest => Currency::Regtest,
 592                 Network::Signet => panic!("Signet unsupported"),
 593         };
 594         let invoice = match utils::create_invoice_from_channelmanager(
 595                 &channel_manager,
 596                 keys_manager,
 597                 currency,
 598                 Some(amt_msat),
 599                 "ldk-tutorial-node".to_string(),
 600         ) {
 601                 Ok(inv) => {
 602                         println!("SUCCESS: generated invoice: {}", inv);
 603                         inv
 604                 }
 605                 Err(e) => {
 606                         println!("ERROR: failed to create invoice: {:?}", e);
 607                         return;
 608                 }
 609         };
 610
 611         let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
 612         payments.insert(
 613                 payment_hash,
 614                 PaymentInfo {
 615                         preimage: None,
 616                         secret: invoice.payment_secret().cloned(),
 617                         status: HTLCStatus::Pending,
 618                         amt_msat: MillisatAmount(Some(amt_msat)),
 619                 },
 620         );
 621 }
 622
 623 fn close_channel(channel_id: [u8; 32], channel_manager: Arc<ChannelManager>) {
 624         match channel_manager.close_channel(&channel_id) {
 625                 Ok(()) => println!("EVENT: initiating channel close"),
 626                 Err(e) => println!("ERROR: failed to close channel: {:?}", e),
 627         }
 628 }
 629
 630 fn force_close_channel(channel_id: [u8; 32], channel_manager: Arc<ChannelManager>) {
 631         match channel_manager.force_close_channel(&channel_id) {
 632                 Ok(()) => println!("EVENT: initiating channel force-close"),
 633                 Err(e) => println!("ERROR: failed to force-close channel: {:?}", e),
 634         }
 635 }
 636
 637 pub(crate) fn parse_peer_info(
 638         peer_pubkey_and_ip_addr: String,
 639 ) -> Result<(PublicKey, SocketAddr), std::io::Error> {
 640         let mut pubkey_and_addr = peer_pubkey_and_ip_addr.split("@");
 641         let pubkey = pubkey_and_addr.next();
 642         let peer_addr_str = pubkey_and_addr.next();
 643         if peer_addr_str.is_none() || peer_addr_str.is_none() {
 644                 return Err(std::io::Error::new(
 645                         std::io::ErrorKind::Other,
 646                         "ERROR: incorrectly formatted peer info. Should be formatted as: `pubkey@host:port`",
 647                 ));
 648         }
 649
 650         let peer_addr = peer_addr_str.unwrap().to_socket_addrs().map(|mut r| r.next());
 651         if peer_addr.is_err() || peer_addr.as_ref().unwrap().is_none() {
 652                 return Err(std::io::Error::new(
 653                         std::io::ErrorKind::Other,
 654                         "ERROR: couldn't parse pubkey@host:port into a socket address",
 655                 ));
 656         }
 657
 658         let pubkey = hex_utils::to_compressed_pubkey(pubkey.unwrap());
 659         if pubkey.is_none() {
 660                 return Err(std::io::Error::new(
 661                         std::io::ErrorKind::Other,
 662                         "ERROR: unable to parse given pubkey for node",
 663                 ));
 664         }
 665
 666         Ok((pubkey.unwrap(), peer_addr.unwrap().unwrap()))
 667 }