_ 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 <amt_satoshis>");
 395         println!("sendpayment <invoice>");
 396         println!("getinvoice <amt_millisatoshis>");
 397         println!("connectpeer pubkey@host:port");
 398         println!("listchannels");
 399         println!("listpayments");
 400         println!("closechannel <channel_id>");
 401         println!("forceclosechannel <channel_id>");
 402         println!("nodeinfo");
 403         println!("listpeers");
 404 }
 405
 406 fn node_info(channel_manager: Arc<ChannelManager>, peer_manager: Arc<PeerManager>) {
 407         println!("\t{{");
 408         println!("\t\t node_pubkey: {}", channel_manager.get_our_node_id());
 409         println!("\t\t num_channels: {}", channel_manager.list_channels().len());
 410         println!("\t\t num_usable_channels: {}", channel_manager.list_usable_channels().len());
 411         println!("\t\t num_peers: {}", peer_manager.get_peer_node_ids().len());
 412         println!("\t}},");
 413 }
 414
 415 fn list_peers(peer_manager: Arc<PeerManager>) {
 416         println!("\t{{");
 417         for pubkey in peer_manager.get_peer_node_ids() {
 418                 println!("\t\t pubkey: {}", pubkey);
 419         }
 420         println!("\t}},");
 421 }
 422
 423 fn list_channels(channel_manager: Arc<ChannelManager>) {
 424         print!("[");
 425         for chan_info in channel_manager.list_channels() {
 426                 println!("");
 427                 println!("\t{{");
 428                 println!("\t\tchannel_id: {},", hex_utils::hex_str(&chan_info.channel_id[..]));
 429                 if let Some(funding_txo) = chan_info.funding_txo {
 430                         println!("\t\tfunding_txid: {},", funding_txo.txid);
 431                 }
 432                 println!(
 433                         "\t\tpeer_pubkey: {},",
 434                         hex_utils::hex_str(&chan_info.remote_network_id.serialize())
 435                 );
 436                 if let Some(id) = chan_info.short_channel_id {
 437                         println!("\t\tshort_channel_id: {},", id);
 438                 }
 439                 println!("\t\tis_confirmed_onchain: {},", chan_info.is_funding_locked);
 440                 println!("\t\tchannel_value_satoshis: {},", chan_info.channel_value_satoshis);
 441                 if chan_info.is_usable {
 442                         println!("\t\tavailable_balance_for_send_msat: {},", chan_info.outbound_capacity_msat);
 443                         println!("\t\tavailable_balance_for_recv_msat: {},", chan_info.inbound_capacity_msat);
 444                 }
 445                 println!("\t\tchannel_can_send_payments: {},", chan_info.is_usable);
 446                 println!("\t}},");
 447         }
 448         println!("]");
 449 }
 450
 451 fn list_payments(inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage) {
 452         let inbound = inbound_payments.lock().unwrap();
 453         let outbound = outbound_payments.lock().unwrap();
 454         print!("[");
 455         for (payment_hash, payment_info) in inbound.deref() {
 456                 println!("");
 457                 println!("\t{{");
 458                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 459                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 460                 println!("\t\thtlc_direction: inbound,");
 461                 println!(
 462                         "\t\thtlc_status: {},",
 463                         match payment_info.status {
 464                                 HTLCStatus::Pending => "pending",
 465                                 HTLCStatus::Succeeded => "succeeded",
 466                                 HTLCStatus::Failed => "failed",
 467                         }
 468                 );
 469
 470                 println!("\t}},");
 471         }
 472
 473         for (payment_hash, payment_info) in outbound.deref() {
 474                 println!("");
 475                 println!("\t{{");
 476                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 477                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 478                 println!("\t\thtlc_direction: outbound,");
 479                 println!(
 480                         "\t\thtlc_status: {},",
 481                         match payment_info.status {
 482                                 HTLCStatus::Pending => "pending",
 483                                 HTLCStatus::Succeeded => "succeeded",
 484                                 HTLCStatus::Failed => "failed",
 485                         }
 486                 );
 487
 488                 println!("\t}},");
 489         }
 490         println!("]");
 491 }
 492
 493 pub(crate) async fn connect_peer_if_necessary(
 494         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 495         event_notifier: mpsc::Sender<()>,
 496 ) -> Result<(), ()> {
 497         for node_pubkey in peer_manager.get_peer_node_ids() {
 498                 if node_pubkey == pubkey {
 499                         return Ok(());
 500                 }
 501         }
 502         match lightning_net_tokio::connect_outbound(
 503                 Arc::clone(&peer_manager),
 504                 event_notifier,
 505                 pubkey,
 506                 peer_addr,
 507         )
 508         .await
 509         {
 510                 Some(conn_closed_fut) => {
 511                         let mut closed_fut_box = Box::pin(conn_closed_fut);
 512                         let mut peer_connected = false;
 513                         while !peer_connected {
 514                                 match futures::poll!(&mut closed_fut_box) {
 515                                         std::task::Poll::Ready(_) => {
 516                                                 println!("ERROR: Peer disconnected before we finished the handshake");
 517                                                 return Err(());
 518                                         }
 519                                         std::task::Poll::Pending => {}
 520                                 }
 521                                 for node_pubkey in peer_manager.get_peer_node_ids() {
 522                                         if node_pubkey == pubkey {
 523                                                 peer_connected = true;
 524                                         }
 525                                 }
 526                                 // Avoid blocking the tokio context by sleeping a bit
 527                                 tokio::time::sleep(Duration::from_millis(10)).await;
 528                         }
 529                 }
 530                 None => {
 531                         println!("ERROR: failed to connect to peer");
 532                         return Err(());
 533                 }
 534         }
 535         Ok(())
 536 }
 537
 538 fn open_channel(
 539         peer_pubkey: PublicKey, channel_amt_sat: u64, announce_channel: bool,
 540         channel_manager: Arc<ChannelManager>,
 541 ) -> Result<(), ()> {
 542         let mut config = UserConfig::default();
 543         if announce_channel {
 544                 config.channel_options.announced_channel = true;
 545         }
 546         // lnd's max to_self_delay is 2016, so we want to be compatible.
 547         config.peer_channel_config_limits.their_to_self_delay = 2016;
 548         match channel_manager.create_channel(peer_pubkey, channel_amt_sat, 0, 0, None) {
 549                 Ok(_) => {
 550                         println!("EVENT: initiated channel with peer {}. ", peer_pubkey);
 551                         return Ok(());
 552                 }
 553                 Err(e) => {
 554                         println!("ERROR: failed to open channel: {:?}", e);
 555                         return Err(());
 556                 }
 557         }
 558 }
 559
 560 fn send_payment(
 561         payee: PublicKey, amt_msat: u64, final_cltv: u32, payment_hash: PaymentHash,
 562         payment_secret: Option<PaymentSecret>, payee_features: Option<InvoiceFeatures>,
 563         route_hints: Vec<RouteHintHop>,
 564         router: Arc<NetGraphMsgHandler<Arc<dyn chain::Access + Send + Sync>, Arc<FilesystemLogger>>>,
 565         channel_manager: Arc<ChannelManager>, payment_storage: PaymentInfoStorage,
 566         logger: Arc<FilesystemLogger>,
 567 ) {
 568         let network_graph = router.network_graph.read().unwrap();
 569         let first_hops = channel_manager.list_usable_channels();
 570         let payer_pubkey = channel_manager.get_our_node_id();
 571
 572         let route = router::get_route(
 573                 &payer_pubkey,
 574                 &network_graph,
 575                 &payee,
 576                 payee_features,
 577                 Some(&first_hops.iter().collect::<Vec<_>>()),
 578                 &route_hints.iter().collect::<Vec<_>>(),
 579                 amt_msat,
 580                 final_cltv,
 581                 logger,
 582         );
 583         if let Err(e) = route {
 584                 println!("ERROR: failed to find route: {}", e.err);
 585                 return;
 586         }
 587         let status = match channel_manager.send_payment(&route.unwrap(), payment_hash, &payment_secret)
 588         {
 589                 Ok(()) => {
 590                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee);
 591                         HTLCStatus::Pending
 592                 }
 593                 Err(e) => {
 594                         println!("ERROR: failed to send payment: {:?}", e);
 595                         HTLCStatus::Failed
 596                 }
 597         };
 598         let mut payments = payment_storage.lock().unwrap();
 599         payments.insert(
 600                 payment_hash,
 601                 PaymentInfo {
 602                         preimage: None,
 603                         secret: payment_secret,
 604                         status,
 605                         amt_msat: MillisatAmount(Some(amt_msat)),
 606                 },
 607         );
 608 }
 609
 610 fn get_invoice(
 611         amt_msat: u64, payment_storage: PaymentInfoStorage, channel_manager: Arc<ChannelManager>,
 612         keys_manager: Arc<KeysManager>, network: Network,
 613 ) {
 614         let mut payments = payment_storage.lock().unwrap();
 615         let currency = match network {
 616                 Network::Bitcoin => Currency::Bitcoin,
 617                 Network::Testnet => Currency::BitcoinTestnet,
 618                 Network::Regtest => Currency::Regtest,
 619                 Network::Signet => panic!("Signet unsupported"),
 620         };
 621         let invoice = match utils::create_invoice_from_channelmanager(
 622                 &channel_manager,
 623                 keys_manager,
 624                 currency,
 625                 Some(amt_msat),
 626                 "ldk-tutorial-node".to_string(),
 627         ) {
 628                 Ok(inv) => {
 629                         println!("SUCCESS: generated invoice: {}", inv);
 630                         inv
 631                 }
 632                 Err(e) => {
 633                         println!("ERROR: failed to create invoice: {:?}", e);
 634                         return;
 635                 }
 636         };
 637
 638         let mut payment_hash = PaymentHash([0; 32]);
 639         payment_hash.0.copy_from_slice(&invoice.payment_hash().as_ref()[0..32]);
 640         payments.insert(
 641                 payment_hash,
 642                 PaymentInfo {
 643                         preimage: None,
 644                         // We can't add payment secrets to invoices until we support features in invoices.
 645                         // Otherwise lnd errors with "destination hop doesn't understand payment addresses"
 646                         // (for context, lnd calls payment secrets "payment addresses").
 647                         secret: Some(invoice.payment_secret().unwrap().clone()),
 648                         status: HTLCStatus::Pending,
 649                         amt_msat: MillisatAmount(Some(amt_msat)),
 650                 },
 651         );
 652 }
 653
 654 fn close_channel(channel_id: [u8; 32], channel_manager: Arc<ChannelManager>) {
 655         match channel_manager.close_channel(&channel_id) {
 656                 Ok(()) => println!("EVENT: initiating channel close"),
 657                 Err(e) => println!("ERROR: failed to close channel: {:?}", e),
 658         }
 659 }
 660
 661 fn force_close_channel(channel_id: [u8; 32], channel_manager: Arc<ChannelManager>) {
 662         match channel_manager.force_close_channel(&channel_id) {
 663                 Ok(()) => println!("EVENT: initiating channel force-close"),
 664                 Err(e) => println!("ERROR: failed to force-close channel: {:?}", e),
 665         }
 666 }
 667
 668 pub(crate) fn parse_peer_info(
 669         peer_pubkey_and_ip_addr: String,
 670 ) -> Result<(PublicKey, SocketAddr), std::io::Error> {
 671         let mut pubkey_and_addr = peer_pubkey_and_ip_addr.split("@");
 672         let pubkey = pubkey_and_addr.next();
 673         let peer_addr_str = pubkey_and_addr.next();
 674         if peer_addr_str.is_none() || peer_addr_str.is_none() {
 675                 return Err(std::io::Error::new(
 676                         std::io::ErrorKind::Other,
 677                         "ERROR: incorrectly formatted peer
 678                 info. Should be formatted as: `pubkey@host:port`",
 679                 ));
 680         }
 681
 682         let peer_addr = peer_addr_str.unwrap().to_socket_addrs().map(|mut r| r.next());
 683         if peer_addr.is_err() || peer_addr.as_ref().unwrap().is_none() {
 684                 return Err(std::io::Error::new(
 685                         std::io::ErrorKind::Other,
 686                         "ERROR: couldn't parse pubkey@host:port into a socket address",
 687                 ));
 688         }
 689
 690         let pubkey = hex_utils::to_compressed_pubkey(pubkey.unwrap());
 691         if pubkey.is_none() {
 692                 return Err(std::io::Error::new(
 693                         std::io::ErrorKind::Other,
 694                         "ERROR: unable to parse given pubkey for node",
 695                 ));
 696         }
 697
 698         Ok((pubkey.unwrap(), peer_addr.unwrap().unwrap()))
 699 }