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

   1 use crate::disk;
   2 use crate::hex_utils;
   3 use crate::{
   4         ChannelManager, FilesystemLogger, HTLCDirection, HTLCStatus, PaymentInfoStorage, PeerManager,
   5         SatoshiAmount,
   6 };
   7 use bitcoin::hashes::sha256::Hash as Sha256Hash;
   8 use bitcoin::hashes::Hash;
   9 use bitcoin::network::constants::Network;
  10 use bitcoin::secp256k1::key::{PublicKey, SecretKey};
  11 use bitcoin::secp256k1::Secp256k1;
  12 use lightning::chain;
  13 use lightning::ln::channelmanager::{PaymentHash, PaymentPreimage, PaymentSecret};
  14 use lightning::ln::features::InvoiceFeatures;
  15 use lightning::routing::network_graph::NetGraphMsgHandler;
  16 use lightning::routing::router;
  17 use lightning::util::config::UserConfig;
  18 use rand;
  19 use rand::Rng;
  20 use std::env;
  21 use std::io;
  22 use std::io::{BufRead, Write};
  23 use std::net::{SocketAddr, TcpStream};
  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 use tokio::sync::mpsc;
  30
  31 pub(crate) struct LdkUserInfo {
  32         pub(crate) bitcoind_rpc_username: String,
  33         pub(crate) bitcoind_rpc_password: String,
  34         pub(crate) bitcoind_rpc_port: u16,
  35         pub(crate) bitcoind_rpc_host: String,
  36         pub(crate) ldk_storage_dir_path: String,
  37         pub(crate) ldk_peer_listening_port: u16,
  38         pub(crate) network: Network,
  39 }
  40
  41 pub(crate) fn parse_startup_args() -> Result<LdkUserInfo, ()> {
  42         if env::args().len() < 4 {
  43                 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]`");
  44                 return Err(());
  45         }
  46         let bitcoind_rpc_info = env::args().skip(1).next().unwrap();
  47         let bitcoind_rpc_info_parts: Vec<&str> = bitcoind_rpc_info.split("@").collect();
  48         if bitcoind_rpc_info_parts.len() != 2 {
  49                 println!("ERROR: bad bitcoind RPC URL provided");
  50                 return Err(());
  51         }
  52         let rpc_user_and_password: Vec<&str> = bitcoind_rpc_info_parts[0].split(":").collect();
  53         if rpc_user_and_password.len() != 2 {
  54                 println!("ERROR: bad bitcoind RPC username/password combo provided");
  55                 return Err(());
  56         }
  57         let bitcoind_rpc_username = rpc_user_and_password[0].to_string();
  58         let bitcoind_rpc_password = rpc_user_and_password[1].to_string();
  59         let bitcoind_rpc_path: Vec<&str> = bitcoind_rpc_info_parts[1].split(":").collect();
  60         if bitcoind_rpc_path.len() != 2 {
  61                 println!("ERROR: bad bitcoind RPC path provided");
  62                 return Err(());
  63         }
  64         let bitcoind_rpc_host = bitcoind_rpc_path[0].to_string();
  65         let bitcoind_rpc_port = bitcoind_rpc_path[1].parse::<u16>().unwrap();
  66
  67         let ldk_storage_dir_path = env::args().skip(2).next().unwrap();
  68
  69         let mut ldk_peer_port_set = true;
  70         let ldk_peer_listening_port: u16 = match env::args().skip(3).next().map(|p| p.parse()) {
  71                 Some(Ok(p)) => p,
  72                 Some(Err(e)) => panic!(e),
  73                 None => {
  74                         ldk_peer_port_set = false;
  75                         9735
  76                 }
  77         };
  78
  79         let arg_idx = match ldk_peer_port_set {
  80                 true => 4,
  81                 false => 3,
  82         };
  83         let network: Network = match env::args().skip(arg_idx).next().as_ref().map(String::as_str) {
  84                 Some("testnet") => Network::Testnet,
  85                 Some("regtest") => Network::Regtest,
  86                 Some(_) => panic!("Unsupported network provided. Options are: `regtest`, `testnet`"),
  87                 None => Network::Testnet,
  88         };
  89         Ok(LdkUserInfo {
  90                 bitcoind_rpc_username,
  91                 bitcoind_rpc_password,
  92                 bitcoind_rpc_host,
  93                 bitcoind_rpc_port,
  94                 ldk_storage_dir_path,
  95                 ldk_peer_listening_port,
  96                 network,
  97         })
  98 }
  99
 100 pub(crate) async fn poll_for_user_input(
 101         peer_manager: Arc<PeerManager>, channel_manager: Arc<ChannelManager>,
 102         router: Arc<NetGraphMsgHandler<Arc<dyn chain::Access>, Arc<FilesystemLogger>>>,
 103         payment_storage: PaymentInfoStorage, node_privkey: SecretKey, event_notifier: mpsc::Sender<()>,
 104         ldk_data_dir: String, logger: Arc<FilesystemLogger>, network: Network,
 105 ) {
 106         println!("LDK startup successful. To view available commands: \"help\".\nLDK logs are available at <your-supplied-ldk-data-dir-path>/.ldk/logs");
 107         let stdin = io::stdin();
 108         print!("> ");
 109         io::stdout().flush().unwrap(); // Without flushing, the `>` doesn't print
 110         for line in stdin.lock().lines() {
 111                 let _ = event_notifier.try_send(());
 112                 let line = line.unwrap();
 113                 let mut words = line.split_whitespace();
 114                 if let Some(word) = words.next() {
 115                         match word {
 116                                 "help" => help(),
 117                                 "openchannel" => {
 118                                         let peer_pubkey_and_ip_addr = words.next();
 119                                         let channel_value_sat = words.next();
 120                                         if peer_pubkey_and_ip_addr.is_none() || channel_value_sat.is_none() {
 121                                                 println!("ERROR: openchannel has 2 required arguments: `openchannel pubkey@host:port channel_amt_satoshis` [--public]");
 122                                                 print!("> ");
 123                                                 io::stdout().flush().unwrap();
 124                                                 continue;
 125                                         }
 126                                         let peer_pubkey_and_ip_addr = peer_pubkey_and_ip_addr.unwrap();
 127                                         let (pubkey, peer_addr) =
 128                                                 match parse_peer_info(peer_pubkey_and_ip_addr.to_string()) {
 129                                                         Ok(info) => info,
 130                                                         Err(e) => {
 131                                                                 println!("{:?}", e.into_inner().unwrap());
 132                                                                 print!("> ");
 133                                                                 io::stdout().flush().unwrap();
 134                                                                 continue;
 135                                                         }
 136                                                 };
 137
 138                                         let chan_amt_sat: Result<u64, _> = channel_value_sat.unwrap().parse();
 139                                         if chan_amt_sat.is_err() {
 140                                                 println!("ERROR: channel amount must be a number");
 141                                                 print!("> ");
 142                                                 io::stdout().flush().unwrap();
 143                                                 continue;
 144                                         }
 145
 146                                         if connect_peer_if_necessary(
 147                                                 pubkey,
 148                                                 peer_addr,
 149                                                 peer_manager.clone(),
 150                                                 event_notifier.clone(),
 151                                         )
 152                                         .is_err()
 153                                         {
 154                                                 print!("> ");
 155                                                 io::stdout().flush().unwrap();
 156                                                 continue;
 157                                         };
 158
 159                                         let announce_channel = match words.next() {
 160                                                 Some("--public") | Some("--public=true") => true,
 161                                                 Some("--public=false") => false,
 162                                                 Some(_) => {
 163                                                         println!("ERROR: invalid `--public` command format. Valid formats: `--public`, `--public=true` `--public=false`");
 164                                                         print!("> ");
 165                                                         io::stdout().flush().unwrap();
 166                                                         continue;
 167                                                 }
 168                                                 None => false,
 169                                         };
 170
 171                                         if open_channel(
 172                                                 pubkey,
 173                                                 chan_amt_sat.unwrap(),
 174                                                 announce_channel,
 175                                                 channel_manager.clone(),
 176                                         )
 177                                         .is_ok()
 178                                         {
 179                                                 let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone());
 180                                                 let _ = disk::persist_channel_peer(
 181                                                         Path::new(&peer_data_path),
 182                                                         peer_pubkey_and_ip_addr,
 183                                                 );
 184                                         }
 185                                 }
 186                                 "sendpayment" => {
 187                                         let invoice_str = words.next();
 188                                         if invoice_str.is_none() {
 189                                                 println!("ERROR: sendpayment requires an invoice: `sendpayment <invoice>`");
 190                                                 print!("> ");
 191                                                 io::stdout().flush().unwrap();
 192                                                 continue;
 193                                         }
 194
 195                                         let invoice_res = lightning_invoice::Invoice::from_str(invoice_str.unwrap());
 196                                         if invoice_res.is_err() {
 197                                                 println!("ERROR: invalid invoice: {:?}", invoice_res.unwrap_err());
 198                                                 print!("> ");
 199                                                 io::stdout().flush().unwrap();
 200                                                 continue;
 201                                         }
 202                                         let invoice = invoice_res.unwrap();
 203
 204                                         let amt_pico_btc = invoice.amount_pico_btc();
 205                                         if amt_pico_btc.is_none() {
 206                                                 println!("ERROR: invalid invoice: must contain amount to pay");
 207                                                 print!("> ");
 208                                                 io::stdout().flush().unwrap();
 209                                                 continue;
 210                                         }
 211                                         let amt_msat = amt_pico_btc.unwrap() / 10;
 212
 213                                         let payee_pubkey = invoice.recover_payee_pub_key();
 214                                         let final_cltv = *invoice.min_final_cltv_expiry().unwrap_or(&9) as u32;
 215
 216                                         let mut payment_hash = PaymentHash([0; 32]);
 217                                         payment_hash.0.copy_from_slice(&invoice.payment_hash().as_ref()[0..32]);
 218
 219                                         let payment_secret = match invoice.payment_secret() {
 220                                                 Some(secret) => {
 221                                                         let mut payment_secret = PaymentSecret([0; 32]);
 222                                                         payment_secret.0.copy_from_slice(&secret.0);
 223                                                         Some(payment_secret)
 224                                                 }
 225                                                 None => None,
 226                                         };
 227
 228                                         // rust-lightning-invoice doesn't currently support features, so we parse features
 229                                         // manually from the invoice.
 230                                         let mut invoice_features = InvoiceFeatures::empty();
 231                                         for field in &invoice.into_signed_raw().raw_invoice().data.tagged_fields {
 232                                                 match field {
 233                                                         lightning_invoice::RawTaggedField::UnknownSemantics(vec) => {
 234                                                                 if vec[0] == bech32::u5::try_from_u8(5).unwrap() {
 235                                                                         if vec.len() >= 6 && vec[5].to_u8() & 0b10000 != 0 {
 236                                                                                 invoice_features =
 237                                                                                         invoice_features.set_variable_length_onion_optional();
 238                                                                         }
 239                                                                         if vec.len() >= 6 && vec[5].to_u8() & 0b01000 != 0 {
 240                                                                                 invoice_features =
 241                                                                                         invoice_features.set_variable_length_onion_required();
 242                                                                         }
 243                                                                         if vec.len() >= 4 && vec[3].to_u8() & 0b00001 != 0 {
 244                                                                                 invoice_features =
 245                                                                                         invoice_features.set_payment_secret_optional();
 246                                                                         }
 247                                                                         if vec.len() >= 5 && vec[4].to_u8() & 0b10000 != 0 {
 248                                                                                 invoice_features =
 249                                                                                         invoice_features.set_payment_secret_required();
 250                                                                         }
 251                                                                         if vec.len() >= 4 && vec[3].to_u8() & 0b00100 != 0 {
 252                                                                                 invoice_features =
 253                                                                                         invoice_features.set_basic_mpp_optional();
 254                                                                         }
 255                                                                         if vec.len() >= 4 && vec[3].to_u8() & 0b00010 != 0 {
 256                                                                                 invoice_features =
 257                                                                                         invoice_features.set_basic_mpp_required();
 258                                                                         }
 259                                                                 }
 260                                                         }
 261                                                         _ => {}
 262                                                 }
 263                                         }
 264                                         let invoice_features_opt = match invoice_features == InvoiceFeatures::empty() {
 265                                                 true => None,
 266                                                 false => Some(invoice_features),
 267                                         };
 268                                         send_payment(
 269                                                 payee_pubkey,
 270                                                 amt_msat,
 271                                                 final_cltv,
 272                                                 payment_hash,
 273                                                 payment_secret,
 274                                                 invoice_features_opt,
 275                                                 router.clone(),
 276                                                 channel_manager.clone(),
 277                                                 payment_storage.clone(),
 278                                                 logger.clone(),
 279                                         );
 280                                 }
 281                                 "getinvoice" => {
 282                                         let amt_str = words.next();
 283                                         if amt_str.is_none() {
 284                                                 println!("ERROR: getinvoice requires an amount in satoshis");
 285                                                 print!("> ");
 286                                                 io::stdout().flush().unwrap();
 287                                                 continue;
 288                                         }
 289
 290                                         let amt_sat: Result<u64, _> = amt_str.unwrap().parse();
 291                                         if amt_sat.is_err() {
 292                                                 println!("ERROR: getinvoice provided payment amount was not a number");
 293                                                 print!("> ");
 294                                                 io::stdout().flush().unwrap();
 295                                                 continue;
 296                                         }
 297                                         get_invoice(
 298                                                 amt_sat.unwrap(),
 299                                                 payment_storage.clone(),
 300                                                 node_privkey.clone(),
 301                                                 channel_manager.clone(),
 302                                                 network,
 303                                         );
 304                                 }
 305                                 "connectpeer" => {
 306                                         let peer_pubkey_and_ip_addr = words.next();
 307                                         if peer_pubkey_and_ip_addr.is_none() {
 308                                                 println!("ERROR: connectpeer requires peer connection info: `connectpeer pubkey@host:port`");
 309                                                 print!("> ");
 310                                                 io::stdout().flush().unwrap();
 311                                                 continue;
 312                                         }
 313                                         let (pubkey, peer_addr) =
 314                                                 match parse_peer_info(peer_pubkey_and_ip_addr.unwrap().to_string()) {
 315                                                         Ok(info) => info,
 316                                                         Err(e) => {
 317                                                                 println!("{:?}", e.into_inner().unwrap());
 318                                                                 print!("> ");
 319                                                                 io::stdout().flush().unwrap();
 320                                                                 continue;
 321                                                         }
 322                                                 };
 323                                         if connect_peer_if_necessary(
 324                                                 pubkey,
 325                                                 peer_addr,
 326                                                 peer_manager.clone(),
 327                                                 event_notifier.clone(),
 328                                         )
 329                                         .is_ok()
 330                                         {
 331                                                 println!("SUCCESS: connected to peer {}", pubkey);
 332                                         }
 333                                 }
 334                                 "listchannels" => list_channels(channel_manager.clone()),
 335                                 "listpayments" => list_payments(payment_storage.clone()),
 336                                 "closechannel" => {
 337                                         let channel_id_str = words.next();
 338                                         if channel_id_str.is_none() {
 339                                                 println!("ERROR: closechannel requires a channel ID: `closechannel <channel_id>`");
 340                                                 print!("> ");
 341                                                 io::stdout().flush().unwrap();
 342                                                 continue;
 343                                         }
 344                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 345                                         if channel_id_vec.is_none() {
 346                                                 println!("ERROR: couldn't parse channel_id as hex");
 347                                                 print!("> ");
 348                                                 io::stdout().flush().unwrap();
 349                                                 continue;
 350                                         }
 351                                         let mut channel_id = [0; 32];
 352                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 353                                         close_channel(channel_id, channel_manager.clone());
 354                                 }
 355                                 "forceclosechannel" => {
 356                                         let channel_id_str = words.next();
 357                                         if channel_id_str.is_none() {
 358                                                 println!("ERROR: forceclosechannel requires a channel ID: `forceclosechannel <channel_id>`");
 359                                                 print!("> ");
 360                                                 io::stdout().flush().unwrap();
 361                                                 continue;
 362                                         }
 363                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 364                                         if channel_id_vec.is_none() {
 365                                                 println!("ERROR: couldn't parse channel_id as hex");
 366                                                 print!("> ");
 367                                                 io::stdout().flush().unwrap();
 368                                                 continue;
 369                                         }
 370                                         let mut channel_id = [0; 32];
 371                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 372                                         force_close_channel(channel_id, channel_manager.clone());
 373                                 }
 374                                 _ => println!("Unknown command. See `\"help\" for available commands."),
 375                         }
 376                 }
 377                 print!("> ");
 378                 io::stdout().flush().unwrap();
 379         }
 380 }
 381
 382 fn help() {
 383         println!("openchannel pubkey@host:port <channel_amt_satoshis>");
 384         println!("sendpayment <invoice>");
 385         println!("getinvoice <amt_in_satoshis>");
 386         println!("connectpeer pubkey@host:port");
 387         println!("listchannels");
 388         println!("listpayments");
 389         println!("closechannel <channel_id>");
 390         println!("forceclosechannel <channel_id>");
 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                 println!(
 400                         "\t\tpeer_pubkey: {},",
 401                         hex_utils::hex_str(&chan_info.remote_network_id.serialize())
 402                 );
 403                 let mut pending_channel = false;
 404                 match chan_info.short_channel_id {
 405                         Some(id) => println!("\t\tshort_channel_id: {},", id),
 406                         None => {
 407                                 pending_channel = true;
 408                         }
 409                 }
 410                 println!("\t\tpending_open: {},", pending_channel);
 411                 println!("\t\tchannel_value_satoshis: {},", chan_info.channel_value_satoshis);
 412                 println!("\t\tchannel_can_send_payments: {},", chan_info.is_live);
 413                 println!("\t}},");
 414         }
 415         println!("]");
 416 }
 417
 418 fn list_payments(payment_storage: PaymentInfoStorage) {
 419         let payments = payment_storage.lock().unwrap();
 420         print!("[");
 421         for (payment_hash, payment_info) in payments.deref() {
 422                 let direction_str = match payment_info.1 {
 423                         HTLCDirection::Inbound => "inbound",
 424                         HTLCDirection::Outbound => "outbound",
 425                 };
 426                 println!("");
 427                 println!("\t{{");
 428                 println!("\t\tamount_satoshis: {},", payment_info.3);
 429                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 430                 println!("\t\thtlc_direction: {},", direction_str);
 431                 println!(
 432                         "\t\thtlc_status: {},",
 433                         match payment_info.2 {
 434                                 HTLCStatus::Pending => "pending",
 435                                 HTLCStatus::Succeeded => "succeeded",
 436                                 HTLCStatus::Failed => "failed",
 437                         }
 438                 );
 439
 440                 println!("\t}},");
 441         }
 442         println!("]");
 443 }
 444
 445 pub(crate) fn connect_peer_if_necessary(
 446         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 447         event_notifier: mpsc::Sender<()>,
 448 ) -> Result<(), ()> {
 449         for node_pubkey in peer_manager.get_peer_node_ids() {
 450                 if node_pubkey == pubkey {
 451                         return Ok(());
 452                 }
 453         }
 454         match TcpStream::connect_timeout(&peer_addr, Duration::from_secs(10)) {
 455                 Ok(stream) => {
 456                         let peer_mgr = peer_manager.clone();
 457                         let event_ntfns = event_notifier.clone();
 458                         tokio::spawn(async move {
 459                                 lightning_net_tokio::setup_outbound(peer_mgr, event_ntfns, pubkey, stream).await;
 460                         });
 461                         let mut peer_connected = false;
 462                         while !peer_connected {
 463                                 for node_pubkey in peer_manager.get_peer_node_ids() {
 464                                         if node_pubkey == pubkey {
 465                                                 peer_connected = true;
 466                                         }
 467                                 }
 468                         }
 469                 }
 470                 Err(e) => {
 471                         println!("ERROR: failed to connect to peer: {:?}", e);
 472                         return Err(());
 473                 }
 474         }
 475         Ok(())
 476 }
 477
 478 fn open_channel(
 479         peer_pubkey: PublicKey, channel_amt_sat: u64, announce_channel: bool,
 480         channel_manager: Arc<ChannelManager>,
 481 ) -> Result<(), ()> {
 482         let mut config = UserConfig::default();
 483         if announce_channel {
 484                 config.channel_options.announced_channel = true;
 485         }
 486         // lnd's max to_self_delay is 2016, so we want to be compatible.
 487         config.peer_channel_config_limits.their_to_self_delay = 2016;
 488         match channel_manager.create_channel(peer_pubkey, channel_amt_sat, 0, 0, None) {
 489                 Ok(_) => {
 490                         println!("EVENT: initiated channel with peer {}. ", peer_pubkey);
 491                         return Ok(());
 492                 }
 493                 Err(e) => {
 494                         println!("ERROR: failed to open channel: {:?}", e);
 495                         return Err(());
 496                 }
 497         }
 498 }
 499
 500 fn send_payment(
 501         payee: PublicKey, amt_msat: u64, final_cltv: u32, payment_hash: PaymentHash,
 502         payment_secret: Option<PaymentSecret>, payee_features: Option<InvoiceFeatures>,
 503         router: Arc<NetGraphMsgHandler<Arc<dyn chain::Access>, Arc<FilesystemLogger>>>,
 504         channel_manager: Arc<ChannelManager>, payment_storage: PaymentInfoStorage,
 505         logger: Arc<FilesystemLogger>,
 506 ) {
 507         let network_graph = router.network_graph.read().unwrap();
 508         let first_hops = channel_manager.list_usable_channels();
 509         let payer_pubkey = channel_manager.get_our_node_id();
 510
 511         let route = router::get_route(
 512                 &payer_pubkey,
 513                 &network_graph,
 514                 &payee,
 515                 payee_features,
 516                 Some(&first_hops.iter().collect::<Vec<_>>()),
 517                 &vec![],
 518                 amt_msat,
 519                 final_cltv,
 520                 logger,
 521         );
 522         if let Err(e) = route {
 523                 println!("ERROR: failed to find route: {}", e.err);
 524                 return;
 525         }
 526         let status = match channel_manager.send_payment(&route.unwrap(), payment_hash, &payment_secret)
 527         {
 528                 Ok(()) => {
 529                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee);
 530                         HTLCStatus::Pending
 531                 }
 532                 Err(e) => {
 533                         println!("ERROR: failed to send payment: {:?}", e);
 534                         HTLCStatus::Failed
 535                 }
 536         };
 537         let mut payments = payment_storage.lock().unwrap();
 538         payments.insert(
 539                 payment_hash,
 540                 (None, HTLCDirection::Outbound, status, SatoshiAmount(Some(amt_msat / 1000))),
 541         );
 542 }
 543
 544 fn get_invoice(
 545         amt_sat: u64, payment_storage: PaymentInfoStorage, our_node_privkey: SecretKey,
 546         channel_manager: Arc<ChannelManager>, network: Network,
 547 ) {
 548         let mut payments = payment_storage.lock().unwrap();
 549         let secp_ctx = Secp256k1::new();
 550
 551         let mut preimage = [0; 32];
 552         rand::thread_rng().fill_bytes(&mut preimage);
 553         let payment_hash = Sha256Hash::hash(&preimage);
 554
 555         let our_node_pubkey = channel_manager.get_our_node_id();
 556         let mut invoice = lightning_invoice::InvoiceBuilder::new(match network {
 557                 Network::Bitcoin => lightning_invoice::Currency::Bitcoin,
 558                 Network::Testnet => lightning_invoice::Currency::BitcoinTestnet,
 559                 Network::Regtest => lightning_invoice::Currency::Regtest,
 560                 Network::Signet => panic!("Signet invoices not supported"),
 561         })
 562         .payment_hash(payment_hash)
 563         .description("rust-lightning-bitcoinrpc invoice".to_string())
 564         .amount_pico_btc(amt_sat * 10_000)
 565         .current_timestamp()
 566         .payee_pub_key(our_node_pubkey);
 567
 568         // Add route hints to the invoice.
 569         let our_channels = channel_manager.list_usable_channels();
 570         for channel in our_channels {
 571                 let short_channel_id = match channel.short_channel_id {
 572                         Some(id) => id.to_be_bytes(),
 573                         None => continue,
 574                 };
 575                 let forwarding_info = match channel.counterparty_forwarding_info {
 576                         Some(info) => info,
 577                         None => continue,
 578                 };
 579                 invoice = invoice.route(vec![lightning_invoice::RouteHop {
 580                         pubkey: channel.remote_network_id,
 581                         short_channel_id,
 582                         fee_base_msat: forwarding_info.fee_base_msat,
 583                         fee_proportional_millionths: forwarding_info.fee_proportional_millionths,
 584                         cltv_expiry_delta: forwarding_info.cltv_expiry_delta,
 585                 }]);
 586         }
 587
 588         // Sign the invoice.
 589         let invoice =
 590                 invoice.build_signed(|msg_hash| secp_ctx.sign_recoverable(msg_hash, &our_node_privkey));
 591
 592         match invoice {
 593                 Ok(invoice) => println!("SUCCESS: generated invoice: {}", invoice),
 594                 Err(e) => println!("ERROR: failed to create invoice: {:?}", e),
 595         }
 596
 597         payments.insert(
 598                 PaymentHash(payment_hash.into_inner()),
 599                 (
 600                         Some(PaymentPreimage(preimage)),
 601                         HTLCDirection::Inbound,
 602                         HTLCStatus::Pending,
 603                         SatoshiAmount(Some(amt_sat)),
 604                 ),
 605         );
 606 }
 607
 608 fn close_channel(channel_id: [u8; 32], channel_manager: Arc<ChannelManager>) {
 609         match channel_manager.close_channel(&channel_id) {
 610                 Ok(()) => println!("EVENT: initiating channel close"),
 611                 Err(e) => println!("ERROR: failed to close channel: {:?}", e),
 612         }
 613 }
 614
 615 fn force_close_channel(channel_id: [u8; 32], channel_manager: Arc<ChannelManager>) {
 616         match channel_manager.force_close_channel(&channel_id) {
 617                 Ok(()) => println!("EVENT: initiating channel force-close"),
 618                 Err(e) => println!("ERROR: failed to force-close channel: {:?}", e),
 619         }
 620 }
 621
 622 pub(crate) fn parse_peer_info(
 623         peer_pubkey_and_ip_addr: String,
 624 ) -> Result<(PublicKey, SocketAddr), std::io::Error> {
 625         let mut pubkey_and_addr = peer_pubkey_and_ip_addr.split("@");
 626         let pubkey = pubkey_and_addr.next();
 627         let peer_addr_str = pubkey_and_addr.next();
 628         if peer_addr_str.is_none() || peer_addr_str.is_none() {
 629                 return Err(std::io::Error::new(
 630                         std::io::ErrorKind::Other,
 631                         "ERROR: incorrectly formatted peer
 632         info. Should be formatted as: `pubkey@host:port`",
 633                 ));
 634         }
 635
 636         let peer_addr: Result<SocketAddr, _> = peer_addr_str.unwrap().parse();
 637         if peer_addr.is_err() {
 638                 return Err(std::io::Error::new(
 639                         std::io::ErrorKind::Other,
 640                         "ERROR: couldn't parse pubkey@host:port into a socket address",
 641                 ));
 642         }
 643
 644         let pubkey = hex_utils::to_compressed_pubkey(pubkey.unwrap());
 645         if pubkey.is_none() {
 646                 return Err(std::io::Error::new(
 647                         std::io::ErrorKind::Other,
 648                         "ERROR: unable to parse given pubkey for node",
 649                 ));
 650         }
 651
 652         Ok((pubkey.unwrap(), peer_addr.unwrap()))
 653 }