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