_ 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::network::constants::Network;
   8 use bitcoin::secp256k1::key::PublicKey;
   9 use lightning::chain;
  10 use lightning::chain::keysinterface::KeysManager;
  11 use lightning::ln::features::InvoiceFeatures;
  12 use lightning::ln::msgs::NetAddress;
  13 use lightning::ln::{PaymentHash, PaymentSecret};
  14 use lightning::routing::network_graph::NetGraphMsgHandler;
  15 use lightning::routing::router;
  16 use lightning::routing::router::RouteHintHop;
  17 use lightning::util::config::UserConfig;
  18 use lightning_invoice::{utils, Currency, Invoice};
  19 use std::env;
  20 use std::io;
  21 use std::io::{BufRead, Write};
  22 use std::net::{IpAddr, SocketAddr, ToSocketAddrs};
  23 use std::ops::Deref;
  24 use std::path::Path;
  25 use std::str::FromStr;
  26 use std::sync::Arc;
  27 use std::time::Duration;
  28 use tokio::sync::mpsc;
  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         event_notifier: mpsc::Sender<()>, ldk_data_dir: String, logger: Arc<FilesystemLogger>,
 135         network: Network,
 136 ) {
 137         println!("LDK startup successful. To view available commands: \"help\".");
 138         println!("LDK logs are available at <your-supplied-ldk-data-dir-path>/.ldk/logs");
 139         println!("Local Node ID is {}.", channel_manager.get_our_node_id());
 140         let stdin = io::stdin();
 141         print!("> ");
 142         io::stdout().flush().unwrap(); // Without flushing, the `>` doesn't print
 143         for line in stdin.lock().lines() {
 144                 let _ = event_notifier.try_send(());
 145                 let line = line.unwrap();
 146                 let mut words = line.split_whitespace();
 147                 if let Some(word) = words.next() {
 148                         match word {
 149                                 "help" => help(),
 150                                 "openchannel" => {
 151                                         let peer_pubkey_and_ip_addr = words.next();
 152                                         let channel_value_sat = words.next();
 153                                         if peer_pubkey_and_ip_addr.is_none() || channel_value_sat.is_none() {
 154                                                 println!("ERROR: openchannel has 2 required arguments: `openchannel pubkey@host:port channel_amt_satoshis` [--public]");
 155                                                 print!("> ");
 156                                                 io::stdout().flush().unwrap();
 157                                                 continue;
 158                                         }
 159                                         let peer_pubkey_and_ip_addr = peer_pubkey_and_ip_addr.unwrap();
 160                                         let (pubkey, peer_addr) =
 161                                                 match parse_peer_info(peer_pubkey_and_ip_addr.to_string()) {
 162                                                         Ok(info) => info,
 163                                                         Err(e) => {
 164                                                                 println!("{:?}", e.into_inner().unwrap());
 165                                                                 print!("> ");
 166                                                                 io::stdout().flush().unwrap();
 167                                                                 continue;
 168                                                         }
 169                                                 };
 170
 171                                         let chan_amt_sat: Result<u64, _> = channel_value_sat.unwrap().parse();
 172                                         if chan_amt_sat.is_err() {
 173                                                 println!("ERROR: channel amount must be a number");
 174                                                 print!("> ");
 175                                                 io::stdout().flush().unwrap();
 176                                                 continue;
 177                                         }
 178
 179                                         if connect_peer_if_necessary(
 180                                                 pubkey,
 181                                                 peer_addr,
 182                                                 peer_manager.clone(),
 183                                                 event_notifier.clone(),
 184                                         )
 185                                         .await
 186                                         .is_err()
 187                                         {
 188                                                 print!("> ");
 189                                                 io::stdout().flush().unwrap();
 190                                                 continue;
 191                                         };
 192
 193                                         let announce_channel = match words.next() {
 194                                                 Some("--public") | Some("--public=true") => true,
 195                                                 Some("--public=false") => false,
 196                                                 Some(_) => {
 197                                                         println!("ERROR: invalid `--public` command format. Valid formats: `--public`, `--public=true` `--public=false`");
 198                                                         print!("> ");
 199                                                         io::stdout().flush().unwrap();
 200                                                         continue;
 201                                                 }
 202                                                 None => false,
 203                                         };
 204
 205                                         if open_channel(
 206                                                 pubkey,
 207                                                 chan_amt_sat.unwrap(),
 208                                                 announce_channel,
 209                                                 channel_manager.clone(),
 210                                         )
 211                                         .is_ok()
 212                                         {
 213                                                 let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone());
 214                                                 let _ = disk::persist_channel_peer(
 215                                                         Path::new(&peer_data_path),
 216                                                         peer_pubkey_and_ip_addr,
 217                                                 );
 218                                         }
 219                                 }
 220                                 "sendpayment" => {
 221                                         let invoice_str = words.next();
 222                                         if invoice_str.is_none() {
 223                                                 println!("ERROR: sendpayment requires an invoice: `sendpayment <invoice>`");
 224                                                 print!("> ");
 225                                                 io::stdout().flush().unwrap();
 226                                                 continue;
 227                                         }
 228
 229                                         let invoice = match Invoice::from_str(invoice_str.unwrap()) {
 230                                                 Ok(inv) => inv,
 231                                                 Err(e) => {
 232                                                         println!("ERROR: invalid invoice: {:?}", e);
 233                                                         print!("> ");
 234                                                         io::stdout().flush().unwrap();
 235                                                         continue;
 236                                                 }
 237                                         };
 238                                         let mut route_hints = invoice.routes().clone();
 239                                         let mut last_hops = Vec::new();
 240                                         for hint in route_hints.drain(..) {
 241                                                 last_hops.push(hint[hint.len() - 1].clone());
 242                                         }
 243
 244                                         let amt_pico_btc = invoice.amount_pico_btc();
 245                                         if amt_pico_btc.is_none() {
 246                                                 println!("ERROR: invalid invoice: must contain amount to pay");
 247                                                 print!("> ");
 248                                                 io::stdout().flush().unwrap();
 249                                                 continue;
 250                                         }
 251                                         let amt_msat = amt_pico_btc.unwrap() / 10;
 252
 253                                         let payee_pubkey = invoice.recover_payee_pub_key();
 254                                         let final_cltv = invoice.min_final_cltv_expiry() as u32;
 255
 256                                         let mut payment_hash = PaymentHash([0; 32]);
 257                                         payment_hash.0.copy_from_slice(&invoice.payment_hash().as_ref()[0..32]);
 258
 259                                         let payment_secret = match invoice.payment_secret() {
 260                                                 Some(secret) => {
 261                                                         let mut payment_secret = PaymentSecret([0; 32]);
 262                                                         payment_secret.0.copy_from_slice(&secret.0);
 263                                                         Some(payment_secret)
 264                                                 }
 265                                                 None => None,
 266                                         };
 267
 268                                         let invoice_features = match invoice.features() {
 269                                                 Some(feat) => Some(feat.clone()),
 270                                                 None => None,
 271                                         };
 272
 273                                         send_payment(
 274                                                 payee_pubkey,
 275                                                 amt_msat,
 276                                                 final_cltv,
 277                                                 payment_hash,
 278                                                 payment_secret,
 279                                                 invoice_features,
 280                                                 last_hops,
 281                                                 router.clone(),
 282                                                 channel_manager.clone(),
 283                                                 outbound_payments.clone(),
 284                                                 logger.clone(),
 285                                         );
 286                                 }
 287                                 "getinvoice" => {
 288                                         let amt_str = words.next();
 289                                         if amt_str.is_none() {
 290                                                 println!("ERROR: getinvoice requires an amount in millisatoshis");
 291                                                 print!("> ");
 292                                                 io::stdout().flush().unwrap();
 293                                                 continue;
 294                                         }
 295
 296                                         let amt_msat: Result<u64, _> = amt_str.unwrap().parse();
 297                                         if amt_msat.is_err() {
 298                                                 println!("ERROR: getinvoice provided payment amount was not a number");
 299                                                 print!("> ");
 300                                                 io::stdout().flush().unwrap();
 301                                                 continue;
 302                                         }
 303                                         get_invoice(
 304                                                 amt_msat.unwrap(),
 305                                                 inbound_payments.clone(),
 306                                                 channel_manager.clone(),
 307                                                 keys_manager.clone(),
 308                                                 network,
 309                                         );
 310                                 }
 311                                 "connectpeer" => {
 312                                         let peer_pubkey_and_ip_addr = words.next();
 313                                         if peer_pubkey_and_ip_addr.is_none() {
 314                                                 println!("ERROR: connectpeer requires peer connection info: `connectpeer pubkey@host:port`");
 315                                                 print!("> ");
 316                                                 io::stdout().flush().unwrap();
 317                                                 continue;
 318                                         }
 319                                         let (pubkey, peer_addr) =
 320                                                 match parse_peer_info(peer_pubkey_and_ip_addr.unwrap().to_string()) {
 321                                                         Ok(info) => info,
 322                                                         Err(e) => {
 323                                                                 println!("{:?}", e.into_inner().unwrap());
 324                                                                 print!("> ");
 325                                                                 io::stdout().flush().unwrap();
 326                                                                 continue;
 327                                                         }
 328                                                 };
 329                                         if connect_peer_if_necessary(
 330                                                 pubkey,
 331                                                 peer_addr,
 332                                                 peer_manager.clone(),
 333                                                 event_notifier.clone(),
 334                                         )
 335                                         .await
 336                                         .is_ok()
 337                                         {
 338                                                 println!("SUCCESS: connected to peer {}", pubkey);
 339                                         }
 340                                 }
 341                                 "listchannels" => list_channels(channel_manager.clone()),
 342                                 "listpayments" => {
 343                                         list_payments(inbound_payments.clone(), outbound_payments.clone())
 344                                 }
 345                                 "closechannel" => {
 346                                         let channel_id_str = words.next();
 347                                         if channel_id_str.is_none() {
 348                                                 println!("ERROR: closechannel requires a channel ID: `closechannel <channel_id>`");
 349                                                 print!("> ");
 350                                                 io::stdout().flush().unwrap();
 351                                                 continue;
 352                                         }
 353                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 354                                         if channel_id_vec.is_none() {
 355                                                 println!("ERROR: couldn't parse channel_id as hex");
 356                                                 print!("> ");
 357                                                 io::stdout().flush().unwrap();
 358                                                 continue;
 359                                         }
 360                                         let mut channel_id = [0; 32];
 361                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 362                                         close_channel(channel_id, channel_manager.clone());
 363                                 }
 364                                 "forceclosechannel" => {
 365                                         let channel_id_str = words.next();
 366                                         if channel_id_str.is_none() {
 367                                                 println!("ERROR: forceclosechannel requires a channel ID: `forceclosechannel <channel_id>`");
 368                                                 print!("> ");
 369                                                 io::stdout().flush().unwrap();
 370                                                 continue;
 371                                         }
 372                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 373                                         if channel_id_vec.is_none() {
 374                                                 println!("ERROR: couldn't parse channel_id as hex");
 375                                                 print!("> ");
 376                                                 io::stdout().flush().unwrap();
 377                                                 continue;
 378                                         }
 379                                         let mut channel_id = [0; 32];
 380                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 381                                         force_close_channel(channel_id, channel_manager.clone());
 382                                 }
 383                                 "nodeinfo" => node_info(channel_manager.clone(), peer_manager.clone()),
 384                                 "listpeers" => list_peers(peer_manager.clone()),
 385                                 _ => println!("Unknown command. See `\"help\" for available commands."),
 386                         }
 387                 }
 388                 print!("> ");
 389                 io::stdout().flush().unwrap();
 390         }
 391 }
 392
 393 fn help() {
 394         println!("openchannel pubkey@host:port <channel_amt_satoshis>");
 395         println!("sendpayment <invoice>");
 396         println!("getinvoice <amt_in_millisatoshis>");
 397         println!("connectpeer pubkey@host:port");
 398         println!("listchannels");
 399         println!("listpayments");
 400         println!("closechannel <channel_id>");
 401         println!("forceclosechannel <channel_id>");
 402 }
 403
 404 fn node_info(channel_manager: Arc<ChannelManager>, peer_manager: Arc<PeerManager>) {
 405         println!("\t{{");
 406         println!("\t\t node_pubkey: {}", channel_manager.get_our_node_id());
 407         println!("\t\t num_channels: {}", channel_manager.list_channels().len());
 408         println!("\t\t num_usable_channels: {}", channel_manager.list_usable_channels().len());
 409         println!("\t\t num_peers: {}", peer_manager.get_peer_node_ids().len());
 410         println!("\t}},");
 411 }
 412
 413 fn list_peers(peer_manager: Arc<PeerManager>) {
 414         println!("\t{{");
 415         for pubkey in peer_manager.get_peer_node_ids() {
 416                 println!("\t\t pubkey: {}", pubkey);
 417         }
 418         println!("\t}},");
 419 }
 420
 421 fn list_channels(channel_manager: Arc<ChannelManager>) {
 422         print!("[");
 423         for chan_info in channel_manager.list_channels() {
 424                 println!("");
 425                 println!("\t{{");
 426                 println!("\t\tchannel_id: {},", hex_utils::hex_str(&chan_info.channel_id[..]));
 427                 if let Some(funding_txo) = chan_info.funding_txo {
 428                         println!("\t\tfunding_txid: {},", funding_txo.txid);
 429                 }
 430                 println!(
 431                         "\t\tpeer_pubkey: {},",
 432                         hex_utils::hex_str(&chan_info.remote_network_id.serialize())
 433                 );
 434                 if let Some(id) = chan_info.short_channel_id {
 435                         println!("\t\tshort_channel_id: {},", id);
 436                 }
 437                 println!("\t\tis_confirmed_onchain: {},", chan_info.is_funding_locked);
 438                 println!("\t\tchannel_value_satoshis: {},", chan_info.channel_value_satoshis);
 439                 if chan_info.is_usable {
 440                         println!("\t\tavailable_balance_for_send_msat: {},", chan_info.outbound_capacity_msat);
 441                         println!("\t\tavailable_balance_for_recv_msat: {},", chan_info.inbound_capacity_msat);
 442                 }
 443                 println!("\t\tchannel_can_send_payments: {},", chan_info.is_usable);
 444                 println!("\t}},");
 445         }
 446         println!("]");
 447 }
 448
 449 fn list_payments(inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage) {
 450         let inbound = inbound_payments.lock().unwrap();
 451         let outbound = outbound_payments.lock().unwrap();
 452         print!("[");
 453         for (payment_hash, payment_info) in inbound.deref() {
 454                 println!("");
 455                 println!("\t{{");
 456                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 457                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 458                 println!("\t\thtlc_direction: inbound,");
 459                 println!(
 460                         "\t\thtlc_status: {},",
 461                         match payment_info.status {
 462                                 HTLCStatus::Pending => "pending",
 463                                 HTLCStatus::Succeeded => "succeeded",
 464                                 HTLCStatus::Failed => "failed",
 465                         }
 466                 );
 467
 468                 println!("\t}},");
 469         }
 470
 471         for (payment_hash, payment_info) in outbound.deref() {
 472                 println!("");
 473                 println!("\t{{");
 474                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 475                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 476                 println!("\t\thtlc_direction: outbound,");
 477                 println!(
 478                         "\t\thtlc_status: {},",
 479                         match payment_info.status {
 480                                 HTLCStatus::Pending => "pending",
 481                                 HTLCStatus::Succeeded => "succeeded",
 482                                 HTLCStatus::Failed => "failed",
 483                         }
 484                 );
 485
 486                 println!("\t}},");
 487         }
 488         println!("]");
 489 }
 490
 491 pub(crate) async fn connect_peer_if_necessary(
 492         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 493         event_notifier: mpsc::Sender<()>,
 494 ) -> Result<(), ()> {
 495         for node_pubkey in peer_manager.get_peer_node_ids() {
 496                 if node_pubkey == pubkey {
 497                         return Ok(());
 498                 }
 499         }
 500         match lightning_net_tokio::connect_outbound(
 501                 Arc::clone(&peer_manager),
 502                 event_notifier,
 503                 pubkey,
 504                 peer_addr,
 505         )
 506         .await
 507         {
 508                 Some(conn_closed_fut) => {
 509                         let mut closed_fut_box = Box::pin(conn_closed_fut);
 510                         let mut peer_connected = false;
 511                         while !peer_connected {
 512                                 match futures::poll!(&mut closed_fut_box) {
 513                                         std::task::Poll::Ready(_) => {
 514                                                 println!("ERROR: Peer disconnected before we finished the handshake");
 515                                                 return Err(());
 516                                         }
 517                                         std::task::Poll::Pending => {}
 518                                 }
 519                                 for node_pubkey in peer_manager.get_peer_node_ids() {
 520                                         if node_pubkey == pubkey {
 521                                                 peer_connected = true;
 522                                         }
 523                                 }
 524                                 // Avoid blocking the tokio context by sleeping a bit
 525                                 tokio::time::sleep(Duration::from_millis(10)).await;
 526                         }
 527                 }
 528                 None => {
 529                         println!("ERROR: failed to connect to peer");
 530                         return Err(());
 531                 }
 532         }
 533         Ok(())
 534 }
 535
 536 fn open_channel(
 537         peer_pubkey: PublicKey, channel_amt_sat: u64, announce_channel: bool,
 538         channel_manager: Arc<ChannelManager>,
 539 ) -> Result<(), ()> {
 540         let mut config = UserConfig::default();
 541         if announce_channel {
 542                 config.channel_options.announced_channel = true;
 543         }
 544         // lnd's max to_self_delay is 2016, so we want to be compatible.
 545         config.peer_channel_config_limits.their_to_self_delay = 2016;
 546         match channel_manager.create_channel(peer_pubkey, channel_amt_sat, 0, 0, None) {
 547                 Ok(_) => {
 548                         println!("EVENT: initiated channel with peer {}. ", peer_pubkey);
 549                         return Ok(());
 550                 }
 551                 Err(e) => {
 552                         println!("ERROR: failed to open channel: {:?}", e);
 553                         return Err(());
 554                 }
 555         }
 556 }
 557
 558 fn send_payment(
 559         payee: PublicKey, amt_msat: u64, final_cltv: u32, payment_hash: PaymentHash,
 560         payment_secret: Option<PaymentSecret>, payee_features: Option<InvoiceFeatures>,
 561         route_hints: Vec<RouteHintHop>,
 562         router: Arc<NetGraphMsgHandler<Arc<dyn chain::Access + Send + Sync>, Arc<FilesystemLogger>>>,
 563         channel_manager: Arc<ChannelManager>, payment_storage: PaymentInfoStorage,
 564         logger: Arc<FilesystemLogger>,
 565 ) {
 566         let network_graph = router.network_graph.read().unwrap();
 567         let first_hops = channel_manager.list_usable_channels();
 568         let payer_pubkey = channel_manager.get_our_node_id();
 569
 570         let route = router::get_route(
 571                 &payer_pubkey,
 572                 &network_graph,
 573                 &payee,
 574                 payee_features,
 575                 Some(&first_hops.iter().collect::<Vec<_>>()),
 576                 &route_hints.iter().collect::<Vec<_>>(),
 577                 amt_msat,
 578                 final_cltv,
 579                 logger,
 580         );
 581         if let Err(e) = route {
 582                 println!("ERROR: failed to find route: {}", e.err);
 583                 return;
 584         }
 585         let status = match channel_manager.send_payment(&route.unwrap(), payment_hash, &payment_secret)
 586         {
 587                 Ok(()) => {
 588                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee);
 589                         HTLCStatus::Pending
 590                 }
 591                 Err(e) => {
 592                         println!("ERROR: failed to send payment: {:?}", e);
 593                         HTLCStatus::Failed
 594                 }
 595         };
 596         let mut payments = payment_storage.lock().unwrap();
 597         payments.insert(
 598                 payment_hash,
 599                 PaymentInfo {
 600                         preimage: None,
 601                         secret: payment_secret,
 602                         status,
 603                         amt_msat: MillisatAmount(Some(amt_msat)),
 604                 },
 605         );
 606 }
 607
 608 fn get_invoice(
 609         amt_msat: u64, payment_storage: PaymentInfoStorage, channel_manager: Arc<ChannelManager>,
 610         keys_manager: Arc<KeysManager>, network: Network,
 611 ) {
 612         let mut payments = payment_storage.lock().unwrap();
 613         let currency = match network {
 614                 Network::Bitcoin => Currency::Bitcoin,
 615                 Network::Testnet => Currency::BitcoinTestnet,
 616                 Network::Regtest => Currency::Regtest,
 617                 Network::Signet => panic!("Signet unsupported"),
 618         };
 619         let invoice = match utils::create_invoice_from_channelmanager(
 620                 &channel_manager,
 621                 keys_manager,
 622                 currency,
 623                 Some(amt_msat),
 624                 "ldk-tutorial-node".to_string(),
 625         ) {
 626                 Ok(inv) => {
 627                         println!("SUCCESS: generated invoice: {}", inv);
 628                         inv
 629                 }
 630                 Err(e) => {
 631                         println!("ERROR: failed to create invoice: {:?}", e);
 632                         return;
 633                 }
 634         };
 635
 636         let mut payment_hash = PaymentHash([0; 32]);
 637         payment_hash.0.copy_from_slice(&invoice.payment_hash().as_ref()[0..32]);
 638         payments.insert(
 639                 payment_hash,
 640                 PaymentInfo {
 641                         preimage: None,
 642                         // We can't add payment secrets to invoices until we support features in invoices.
 643                         // Otherwise lnd errors with "destination hop doesn't understand payment addresses"
 644                         // (for context, lnd calls payment secrets "payment addresses").
 645                         secret: Some(invoice.payment_secret().unwrap().clone()),
 646                         status: HTLCStatus::Pending,
 647                         amt_msat: MillisatAmount(Some(amt_msat)),
 648                 },
 649         );
 650 }
 651
 652 fn close_channel(channel_id: [u8; 32], channel_manager: Arc<ChannelManager>) {
 653         match channel_manager.close_channel(&channel_id) {
 654                 Ok(()) => println!("EVENT: initiating channel close"),
 655                 Err(e) => println!("ERROR: failed to close channel: {:?}", e),
 656         }
 657 }
 658
 659 fn force_close_channel(channel_id: [u8; 32], channel_manager: Arc<ChannelManager>) {
 660         match channel_manager.force_close_channel(&channel_id) {
 661                 Ok(()) => println!("EVENT: initiating channel force-close"),
 662                 Err(e) => println!("ERROR: failed to force-close channel: {:?}", e),
 663         }
 664 }
 665
 666 pub(crate) fn parse_peer_info(
 667         peer_pubkey_and_ip_addr: String,
 668 ) -> Result<(PublicKey, SocketAddr), std::io::Error> {
 669         let mut pubkey_and_addr = peer_pubkey_and_ip_addr.split("@");
 670         let pubkey = pubkey_and_addr.next();
 671         let peer_addr_str = pubkey_and_addr.next();
 672         if peer_addr_str.is_none() || peer_addr_str.is_none() {
 673                 return Err(std::io::Error::new(
 674                         std::io::ErrorKind::Other,
 675                         "ERROR: incorrectly formatted peer
 676                 info. Should be formatted as: `pubkey@host:port`",
 677                 ));
 678         }
 679
 680         let peer_addr = peer_addr_str.unwrap().to_socket_addrs().map(|mut r| r.next());
 681         if peer_addr.is_err() || peer_addr.as_ref().unwrap().is_none() {
 682                 return Err(std::io::Error::new(
 683                         std::io::ErrorKind::Other,
 684                         "ERROR: couldn't parse pubkey@host:port into a socket address",
 685                 ));
 686         }
 687
 688         let pubkey = hex_utils::to_compressed_pubkey(pubkey.unwrap());
 689         if pubkey.is_none() {
 690                 return Err(std::io::Error::new(
 691                         std::io::ErrorKind::Other,
 692                         "ERROR: unable to parse given pubkey for node",
 693                 ));
 694         }
 695
 696         Ok((pubkey.unwrap(), peer_addr.unwrap().unwrap()))
 697 }