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

   1 use crate::disk;
   2 use crate::hex_utils;
   3 use crate::{
   4         ChannelManager, FilesystemLogger, HTLCStatus, MillisatAmount, PaymentInfo, PaymentInfoStorage,
   5         PeerManager,
   6 };
   7 use bitcoin::hashes::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, RoutingFees};
  16 use lightning::routing::router;
  17 use lightning::routing::router::RouteHint;
  18 use lightning::util::config::UserConfig;
  19 use lightning_invoice::{Currency, Invoice, InvoiceBuilder, Route, RouteHop};
  20 use rand;
  21 use rand::Rng;
  22 use std::env;
  23 use std::io;
  24 use std::io::{BufRead, Write};
  25 use std::net::{SocketAddr, TcpStream};
  26 use std::ops::Deref;
  27 use std::path::Path;
  28 use std::str::FromStr;
  29 use std::sync::Arc;
  30 use std::time::Duration;
  31 use tokio::sync::mpsc;
  32
  33 pub(crate) struct LdkUserInfo {
  34         pub(crate) bitcoind_rpc_username: String,
  35         pub(crate) bitcoind_rpc_password: String,
  36         pub(crate) bitcoind_rpc_port: u16,
  37         pub(crate) bitcoind_rpc_host: String,
  38         pub(crate) ldk_storage_dir_path: String,
  39         pub(crate) ldk_peer_listening_port: u16,
  40         pub(crate) network: Network,
  41 }
  42
  43 pub(crate) fn parse_startup_args() -> Result<LdkUserInfo, ()> {
  44         if env::args().len() < 4 {
  45                 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]`");
  46                 return Err(());
  47         }
  48         let bitcoind_rpc_info = env::args().skip(1).next().unwrap();
  49         let bitcoind_rpc_info_parts: Vec<&str> = bitcoind_rpc_info.split("@").collect();
  50         if bitcoind_rpc_info_parts.len() != 2 {
  51                 println!("ERROR: bad bitcoind RPC URL provided");
  52                 return Err(());
  53         }
  54         let rpc_user_and_password: Vec<&str> = bitcoind_rpc_info_parts[0].split(":").collect();
  55         if rpc_user_and_password.len() != 2 {
  56                 println!("ERROR: bad bitcoind RPC username/password combo provided");
  57                 return Err(());
  58         }
  59         let bitcoind_rpc_username = rpc_user_and_password[0].to_string();
  60         let bitcoind_rpc_password = rpc_user_and_password[1].to_string();
  61         let bitcoind_rpc_path: Vec<&str> = bitcoind_rpc_info_parts[1].split(":").collect();
  62         if bitcoind_rpc_path.len() != 2 {
  63                 println!("ERROR: bad bitcoind RPC path provided");
  64                 return Err(());
  65         }
  66         let bitcoind_rpc_host = bitcoind_rpc_path[0].to_string();
  67         let bitcoind_rpc_port = bitcoind_rpc_path[1].parse::<u16>().unwrap();
  68
  69         let ldk_storage_dir_path = env::args().skip(2).next().unwrap();
  70
  71         let mut ldk_peer_port_set = true;
  72         let ldk_peer_listening_port: u16 = match env::args().skip(3).next().map(|p| p.parse()) {
  73                 Some(Ok(p)) => p,
  74                 Some(Err(e)) => panic!(e),
  75                 None => {
  76                         ldk_peer_port_set = false;
  77                         9735
  78                 }
  79         };
  80
  81         let arg_idx = match ldk_peer_port_set {
  82                 true => 4,
  83                 false => 3,
  84         };
  85         let network: Network = match env::args().skip(arg_idx).next().as_ref().map(String::as_str) {
  86                 Some("testnet") => Network::Testnet,
  87                 Some("regtest") => Network::Regtest,
  88                 Some(_) => panic!("Unsupported network provided. Options are: `regtest`, `testnet`"),
  89                 None => Network::Testnet,
  90         };
  91         Ok(LdkUserInfo {
  92                 bitcoind_rpc_username,
  93                 bitcoind_rpc_password,
  94                 bitcoind_rpc_host,
  95                 bitcoind_rpc_port,
  96                 ldk_storage_dir_path,
  97                 ldk_peer_listening_port,
  98                 network,
  99         })
 100 }
 101
 102 pub(crate) async fn poll_for_user_input(
 103         peer_manager: Arc<PeerManager>, channel_manager: Arc<ChannelManager>,
 104         router: Arc<NetGraphMsgHandler<Arc<dyn chain::Access>, Arc<FilesystemLogger>>>,
 105         inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage,
 106         node_privkey: SecretKey, event_notifier: mpsc::Sender<()>, ldk_data_dir: String,
 107         logger: Arc<FilesystemLogger>, network: Network,
 108 ) {
 109         println!("LDK startup successful. To view available commands: \"help\".\nLDK logs are available at <your-supplied-ldk-data-dir-path>/.ldk/logs");
 110         let stdin = io::stdin();
 111         print!("> ");
 112         io::stdout().flush().unwrap(); // Without flushing, the `>` doesn't print
 113         for line in stdin.lock().lines() {
 114                 let _ = event_notifier.try_send(());
 115                 let line = line.unwrap();
 116                 let mut words = line.split_whitespace();
 117                 if let Some(word) = words.next() {
 118                         match word {
 119                                 "help" => help(),
 120                                 "openchannel" => {
 121                                         let peer_pubkey_and_ip_addr = words.next();
 122                                         let channel_value_sat = words.next();
 123                                         if peer_pubkey_and_ip_addr.is_none() || channel_value_sat.is_none() {
 124                                                 println!("ERROR: openchannel has 2 required arguments: `openchannel pubkey@host:port channel_amt_satoshis` [--public]");
 125                                                 print!("> ");
 126                                                 io::stdout().flush().unwrap();
 127                                                 continue;
 128                                         }
 129                                         let peer_pubkey_and_ip_addr = peer_pubkey_and_ip_addr.unwrap();
 130                                         let (pubkey, peer_addr) =
 131                                                 match parse_peer_info(peer_pubkey_and_ip_addr.to_string()) {
 132                                                         Ok(info) => info,
 133                                                         Err(e) => {
 134                                                                 println!("{:?}", e.into_inner().unwrap());
 135                                                                 print!("> ");
 136                                                                 io::stdout().flush().unwrap();
 137                                                                 continue;
 138                                                         }
 139                                                 };
 140
 141                                         let chan_amt_sat: Result<u64, _> = channel_value_sat.unwrap().parse();
 142                                         if chan_amt_sat.is_err() {
 143                                                 println!("ERROR: channel amount must be a number");
 144                                                 print!("> ");
 145                                                 io::stdout().flush().unwrap();
 146                                                 continue;
 147                                         }
 148
 149                                         if connect_peer_if_necessary(
 150                                                 pubkey,
 151                                                 peer_addr,
 152                                                 peer_manager.clone(),
 153                                                 event_notifier.clone(),
 154                                         )
 155                                         .is_err()
 156                                         {
 157                                                 print!("> ");
 158                                                 io::stdout().flush().unwrap();
 159                                                 continue;
 160                                         };
 161
 162                                         let announce_channel = match words.next() {
 163                                                 Some("--public") | Some("--public=true") => true,
 164                                                 Some("--public=false") => false,
 165                                                 Some(_) => {
 166                                                         println!("ERROR: invalid `--public` command format. Valid formats: `--public`, `--public=true` `--public=false`");
 167                                                         print!("> ");
 168                                                         io::stdout().flush().unwrap();
 169                                                         continue;
 170                                                 }
 171                                                 None => false,
 172                                         };
 173
 174                                         if open_channel(
 175                                                 pubkey,
 176                                                 chan_amt_sat.unwrap(),
 177                                                 announce_channel,
 178                                                 channel_manager.clone(),
 179                                         )
 180                                         .is_ok()
 181                                         {
 182                                                 let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone());
 183                                                 let _ = disk::persist_channel_peer(
 184                                                         Path::new(&peer_data_path),
 185                                                         peer_pubkey_and_ip_addr,
 186                                                 );
 187                                         }
 188                                 }
 189                                 "sendpayment" => {
 190                                         let invoice_str = words.next();
 191                                         if invoice_str.is_none() {
 192                                                 println!("ERROR: sendpayment requires an invoice: `sendpayment <invoice>`");
 193                                                 print!("> ");
 194                                                 io::stdout().flush().unwrap();
 195                                                 continue;
 196                                         }
 197
 198                                         let invoice_res = Invoice::from_str(invoice_str.unwrap());
 199                                         if invoice_res.is_err() {
 200                                                 println!("ERROR: invalid invoice: {:?}", invoice_res.unwrap_err());
 201                                                 print!("> ");
 202                                                 io::stdout().flush().unwrap();
 203                                                 continue;
 204                                         }
 205                                         let invoice = invoice_res.unwrap();
 206                                         let route_hints: Vec<Route> =
 207                                                 invoice.routes().iter().map(|&route| route.clone()).collect();
 208
 209                                         let amt_pico_btc = invoice.amount_pico_btc();
 210                                         if amt_pico_btc.is_none() {
 211                                                 println!("ERROR: invalid invoice: must contain amount to pay");
 212                                                 print!("> ");
 213                                                 io::stdout().flush().unwrap();
 214                                                 continue;
 215                                         }
 216                                         let amt_msat = amt_pico_btc.unwrap() / 10;
 217
 218                                         let payee_pubkey = invoice.recover_payee_pub_key();
 219                                         let final_cltv = *invoice.min_final_cltv_expiry().unwrap_or(&9) as u32;
 220
 221                                         let mut payment_hash = PaymentHash([0; 32]);
 222                                         payment_hash.0.copy_from_slice(&invoice.payment_hash().as_ref()[0..32]);
 223
 224                                         let payment_secret = match invoice.payment_secret() {
 225                                                 Some(secret) => {
 226                                                         let mut payment_secret = PaymentSecret([0; 32]);
 227                                                         payment_secret.0.copy_from_slice(&secret.0);
 228                                                         Some(payment_secret)
 229                                                 }
 230                                                 None => None,
 231                                         };
 232
 233                                         // rust-lightning-invoice doesn't currently support features, so we parse features
 234                                         // manually from the invoice.
 235                                         let mut invoice_features = InvoiceFeatures::empty();
 236                                         for field in &invoice.into_signed_raw().raw_invoice().data.tagged_fields {
 237                                                 match field {
 238                                                         lightning_invoice::RawTaggedField::UnknownSemantics(vec) => {
 239                                                                 if vec[0] == bech32::u5::try_from_u8(5).unwrap() {
 240                                                                         if vec.len() >= 6 && vec[5].to_u8() & 0b10000 != 0 {
 241                                                                                 invoice_features =
 242                                                                                         invoice_features.set_variable_length_onion_optional();
 243                                                                         }
 244                                                                         if vec.len() >= 6 && vec[5].to_u8() & 0b01000 != 0 {
 245                                                                                 invoice_features =
 246                                                                                         invoice_features.set_variable_length_onion_required();
 247                                                                         }
 248                                                                         if vec.len() >= 4 && vec[3].to_u8() & 0b00001 != 0 {
 249                                                                                 invoice_features =
 250                                                                                         invoice_features.set_payment_secret_optional();
 251                                                                         }
 252                                                                         if vec.len() >= 5 && vec[4].to_u8() & 0b10000 != 0 {
 253                                                                                 invoice_features =
 254                                                                                         invoice_features.set_payment_secret_required();
 255                                                                         }
 256                                                                         if vec.len() >= 4 && vec[3].to_u8() & 0b00100 != 0 {
 257                                                                                 invoice_features =
 258                                                                                         invoice_features.set_basic_mpp_optional();
 259                                                                         }
 260                                                                         if vec.len() >= 4 && vec[3].to_u8() & 0b00010 != 0 {
 261                                                                                 invoice_features =
 262                                                                                         invoice_features.set_basic_mpp_required();
 263                                                                         }
 264                                                                 }
 265                                                         }
 266                                                         _ => {}
 267                                                 }
 268                                         }
 269                                         let invoice_features_opt = match invoice_features == InvoiceFeatures::empty() {
 270                                                 true => None,
 271                                                 false => Some(invoice_features),
 272                                         };
 273                                         send_payment(
 274                                                 payee_pubkey,
 275                                                 amt_msat,
 276                                                 final_cltv,
 277                                                 payment_hash,
 278                                                 payment_secret,
 279                                                 invoice_features_opt,
 280                                                 route_hints,
 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                                                 node_privkey.clone(),
 307                                                 channel_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                                         .is_ok()
 336                                         {
 337                                                 println!("SUCCESS: connected to peer {}", pubkey);
 338                                         }
 339                                 }
 340                                 "listchannels" => list_channels(channel_manager.clone()),
 341                                 "listpayments" => {
 342                                         list_payments(inbound_payments.clone(), outbound_payments.clone())
 343                                 }
 344                                 "closechannel" => {
 345                                         let channel_id_str = words.next();
 346                                         if channel_id_str.is_none() {
 347                                                 println!("ERROR: closechannel requires a channel ID: `closechannel <channel_id>`");
 348                                                 print!("> ");
 349                                                 io::stdout().flush().unwrap();
 350                                                 continue;
 351                                         }
 352                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 353                                         if channel_id_vec.is_none() {
 354                                                 println!("ERROR: couldn't parse channel_id as hex");
 355                                                 print!("> ");
 356                                                 io::stdout().flush().unwrap();
 357                                                 continue;
 358                                         }
 359                                         let mut channel_id = [0; 32];
 360                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 361                                         close_channel(channel_id, channel_manager.clone());
 362                                 }
 363                                 "forceclosechannel" => {
 364                                         let channel_id_str = words.next();
 365                                         if channel_id_str.is_none() {
 366                                                 println!("ERROR: forceclosechannel requires a channel ID: `forceclosechannel <channel_id>`");
 367                                                 print!("> ");
 368                                                 io::stdout().flush().unwrap();
 369                                                 continue;
 370                                         }
 371                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 372                                         if channel_id_vec.is_none() {
 373                                                 println!("ERROR: couldn't parse channel_id as hex");
 374                                                 print!("> ");
 375                                                 io::stdout().flush().unwrap();
 376                                                 continue;
 377                                         }
 378                                         let mut channel_id = [0; 32];
 379                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 380                                         force_close_channel(channel_id, channel_manager.clone());
 381                                 }
 382                                 _ => println!("Unknown command. See `\"help\" for available commands."),
 383                         }
 384                 }
 385                 print!("> ");
 386                 io::stdout().flush().unwrap();
 387         }
 388 }
 389
 390 fn help() {
 391         println!("openchannel pubkey@host:port <channel_amt_satoshis>");
 392         println!("sendpayment <invoice>");
 393         println!("getinvoice <amt_in_millisatoshis>");
 394         println!("connectpeer pubkey@host:port");
 395         println!("listchannels");
 396         println!("listpayments");
 397         println!("closechannel <channel_id>");
 398         println!("forceclosechannel <channel_id>");
 399 }
 400
 401 fn list_channels(channel_manager: Arc<ChannelManager>) {
 402         print!("[");
 403         for chan_info in channel_manager.list_channels() {
 404                 println!("");
 405                 println!("\t{{");
 406                 println!("\t\tchannel_id: {},", hex_utils::hex_str(&chan_info.channel_id[..]));
 407                 println!(
 408                         "\t\tpeer_pubkey: {},",
 409                         hex_utils::hex_str(&chan_info.remote_network_id.serialize())
 410                 );
 411                 let mut pending_channel = false;
 412                 match chan_info.short_channel_id {
 413                         Some(id) => println!("\t\tshort_channel_id: {},", id),
 414                         None => {
 415                                 pending_channel = true;
 416                         }
 417                 }
 418                 println!("\t\tpending_open: {},", pending_channel);
 419                 println!("\t\tchannel_value_satoshis: {},", chan_info.channel_value_satoshis);
 420                 println!("\t\tchannel_can_send_payments: {},", chan_info.is_live);
 421                 println!("\t}},");
 422         }
 423         println!("]");
 424 }
 425
 426 fn list_payments(inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage) {
 427         let inbound = inbound_payments.lock().unwrap();
 428         let outbound = outbound_payments.lock().unwrap();
 429         print!("[");
 430         for (payment_hash, payment_info) in inbound.deref() {
 431                 println!("");
 432                 println!("\t{{");
 433                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 434                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 435                 println!("\t\thtlc_direction: inbound,");
 436                 println!(
 437                         "\t\thtlc_status: {},",
 438                         match payment_info.status {
 439                                 HTLCStatus::Pending => "pending",
 440                                 HTLCStatus::Succeeded => "succeeded",
 441                                 HTLCStatus::Failed => "failed",
 442                         }
 443                 );
 444
 445                 println!("\t}},");
 446         }
 447
 448         for (payment_hash, payment_info) in outbound.deref() {
 449                 println!("");
 450                 println!("\t{{");
 451                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 452                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 453                 println!("\t\thtlc_direction: outbound,");
 454                 println!(
 455                         "\t\thtlc_status: {},",
 456                         match payment_info.status {
 457                                 HTLCStatus::Pending => "pending",
 458                                 HTLCStatus::Succeeded => "succeeded",
 459                                 HTLCStatus::Failed => "failed",
 460                         }
 461                 );
 462
 463                 println!("\t}},");
 464         }
 465         println!("]");
 466 }
 467
 468 pub(crate) fn connect_peer_if_necessary(
 469         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 470         event_notifier: mpsc::Sender<()>,
 471 ) -> Result<(), ()> {
 472         for node_pubkey in peer_manager.get_peer_node_ids() {
 473                 if node_pubkey == pubkey {
 474                         return Ok(());
 475                 }
 476         }
 477         match TcpStream::connect_timeout(&peer_addr, Duration::from_secs(10)) {
 478                 Ok(stream) => {
 479                         let peer_mgr = peer_manager.clone();
 480                         let event_ntfns = event_notifier.clone();
 481                         tokio::spawn(async move {
 482                                 lightning_net_tokio::setup_outbound(peer_mgr, event_ntfns, pubkey, stream).await;
 483                         });
 484                         let mut peer_connected = false;
 485                         while !peer_connected {
 486                                 for node_pubkey in peer_manager.get_peer_node_ids() {
 487                                         if node_pubkey == pubkey {
 488                                                 peer_connected = true;
 489                                         }
 490                                 }
 491                         }
 492                 }
 493                 Err(e) => {
 494                         println!("ERROR: failed to connect to peer: {:?}", e);
 495                         return Err(());
 496                 }
 497         }
 498         Ok(())
 499 }
 500
 501 fn open_channel(
 502         peer_pubkey: PublicKey, channel_amt_sat: u64, announce_channel: bool,
 503         channel_manager: Arc<ChannelManager>,
 504 ) -> Result<(), ()> {
 505         let mut config = UserConfig::default();
 506         if announce_channel {
 507                 config.channel_options.announced_channel = true;
 508         }
 509         // lnd's max to_self_delay is 2016, so we want to be compatible.
 510         config.peer_channel_config_limits.their_to_self_delay = 2016;
 511         match channel_manager.create_channel(peer_pubkey, channel_amt_sat, 0, 0, None) {
 512                 Ok(_) => {
 513                         println!("EVENT: initiated channel with peer {}. ", peer_pubkey);
 514                         return Ok(());
 515                 }
 516                 Err(e) => {
 517                         println!("ERROR: failed to open channel: {:?}", e);
 518                         return Err(());
 519                 }
 520         }
 521 }
 522
 523 fn send_payment(
 524         payee: PublicKey, amt_msat: u64, final_cltv: u32, payment_hash: PaymentHash,
 525         payment_secret: Option<PaymentSecret>, payee_features: Option<InvoiceFeatures>,
 526         mut route_hints: Vec<Route>,
 527         router: Arc<NetGraphMsgHandler<Arc<dyn chain::Access>, Arc<FilesystemLogger>>>,
 528         channel_manager: Arc<ChannelManager>, payment_storage: PaymentInfoStorage,
 529         logger: Arc<FilesystemLogger>,
 530 ) {
 531         let network_graph = router.network_graph.read().unwrap();
 532         let first_hops = channel_manager.list_usable_channels();
 533         let payer_pubkey = channel_manager.get_our_node_id();
 534
 535         let mut hints: Vec<RouteHint> = Vec::new();
 536         for route in route_hints.drain(..) {
 537                 let route_hops = route.into_inner();
 538                 let last_hop = &route_hops[route_hops.len() - 1];
 539                 hints.push(RouteHint {
 540                         src_node_id: last_hop.pubkey,
 541                         short_channel_id: u64::from_be_bytes(last_hop.short_channel_id),
 542                         fees: RoutingFees {
 543                                 base_msat: last_hop.fee_base_msat,
 544                                 proportional_millionths: last_hop.fee_proportional_millionths,
 545                         },
 546                         cltv_expiry_delta: last_hop.cltv_expiry_delta,
 547                         htlc_minimum_msat: None,
 548                         htlc_maximum_msat: None,
 549                 })
 550         }
 551         let route = router::get_route(
 552                 &payer_pubkey,
 553                 &network_graph,
 554                 &payee,
 555                 payee_features,
 556                 Some(&first_hops.iter().collect::<Vec<_>>()),
 557                 &hints.iter().collect::<Vec<_>>(),
 558                 amt_msat,
 559                 final_cltv,
 560                 logger,
 561         );
 562         if let Err(e) = route {
 563                 println!("ERROR: failed to find route: {}", e.err);
 564                 return;
 565         }
 566         let status = match channel_manager.send_payment(&route.unwrap(), payment_hash, &payment_secret)
 567         {
 568                 Ok(()) => {
 569                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee);
 570                         HTLCStatus::Pending
 571                 }
 572                 Err(e) => {
 573                         println!("ERROR: failed to send payment: {:?}", e);
 574                         HTLCStatus::Failed
 575                 }
 576         };
 577         let mut payments = payment_storage.lock().unwrap();
 578         payments.insert(
 579                 payment_hash,
 580                 PaymentInfo {
 581                         preimage: None,
 582                         secret: payment_secret,
 583                         status,
 584                         amt_msat: MillisatAmount(Some(amt_msat)),
 585                 },
 586         );
 587 }
 588
 589 fn get_invoice(
 590         amt_msat: u64, payment_storage: PaymentInfoStorage, our_node_privkey: SecretKey,
 591         channel_manager: Arc<ChannelManager>, network: Network,
 592 ) {
 593         let mut payments = payment_storage.lock().unwrap();
 594         let secp_ctx = Secp256k1::new();
 595
 596         let mut preimage = [0; 32];
 597         rand::thread_rng().fill_bytes(&mut preimage);
 598         let payment_hash = Sha256Hash::hash(&preimage);
 599
 600         let our_node_pubkey = channel_manager.get_our_node_id();
 601         let mut invoice = InvoiceBuilder::new(match network {
 602                 Network::Bitcoin => Currency::Bitcoin,
 603                 Network::Testnet => Currency::BitcoinTestnet,
 604                 Network::Regtest => Currency::Regtest,
 605                 Network::Signet => panic!("Signet invoices not supported"),
 606         })
 607         .payment_hash(payment_hash)
 608         .description("rust-lightning-bitcoinrpc invoice".to_string())
 609         .amount_pico_btc(amt_msat * 10)
 610         .current_timestamp()
 611         .payee_pub_key(our_node_pubkey);
 612
 613         // Add route hints to the invoice.
 614         let our_channels = channel_manager.list_usable_channels();
 615         let mut min_final_cltv_expiry = 9;
 616         for channel in our_channels {
 617                 let short_channel_id = match channel.short_channel_id {
 618                         Some(id) => id.to_be_bytes(),
 619                         None => continue,
 620                 };
 621                 let forwarding_info = match channel.counterparty_forwarding_info {
 622                         Some(info) => info,
 623                         None => continue,
 624                 };
 625                 if forwarding_info.cltv_expiry_delta > min_final_cltv_expiry {
 626                         min_final_cltv_expiry = forwarding_info.cltv_expiry_delta;
 627                 }
 628                 invoice = invoice.route(vec![RouteHop {
 629                         pubkey: channel.remote_network_id,
 630                         short_channel_id,
 631                         fee_base_msat: forwarding_info.fee_base_msat,
 632                         fee_proportional_millionths: forwarding_info.fee_proportional_millionths,
 633                         cltv_expiry_delta: forwarding_info.cltv_expiry_delta,
 634                 }]);
 635         }
 636         invoice = invoice.min_final_cltv_expiry(min_final_cltv_expiry.into());
 637
 638         // Sign the invoice.
 639         let invoice =
 640                 invoice.build_signed(|msg_hash| secp_ctx.sign_recoverable(msg_hash, &our_node_privkey));
 641
 642         match invoice {
 643                 Ok(invoice) => println!("SUCCESS: generated invoice: {}", invoice),
 644                 Err(e) => println!("ERROR: failed to create invoice: {:?}", e),
 645         }
 646
 647         payments.insert(
 648                 PaymentHash(payment_hash.into_inner()),
 649                 PaymentInfo {
 650                         preimage: Some(PaymentPreimage(preimage)),
 651                         // We can't add payment secrets to invoices until we support features in invoices.
 652                         // Otherwise lnd errors with "destination hop doesn't understand payment addresses"
 653                         // (for context, lnd calls payment secrets "payment addresses").
 654                         secret: None,
 655                         status: HTLCStatus::Pending,
 656                         amt_msat: MillisatAmount(Some(amt_msat)),
 657                 },
 658         );
 659 }
 660
 661 fn close_channel(channel_id: [u8; 32], channel_manager: Arc<ChannelManager>) {
 662         match channel_manager.close_channel(&channel_id) {
 663                 Ok(()) => println!("EVENT: initiating channel close"),
 664                 Err(e) => println!("ERROR: failed to close channel: {:?}", e),
 665         }
 666 }
 667
 668 fn force_close_channel(channel_id: [u8; 32], channel_manager: Arc<ChannelManager>) {
 669         match channel_manager.force_close_channel(&channel_id) {
 670                 Ok(()) => println!("EVENT: initiating channel force-close"),
 671                 Err(e) => println!("ERROR: failed to force-close channel: {:?}", e),
 672         }
 673 }
 674
 675 pub(crate) fn parse_peer_info(
 676         peer_pubkey_and_ip_addr: String,
 677 ) -> Result<(PublicKey, SocketAddr), std::io::Error> {
 678         let mut pubkey_and_addr = peer_pubkey_and_ip_addr.split("@");
 679         let pubkey = pubkey_and_addr.next();
 680         let peer_addr_str = pubkey_and_addr.next();
 681         if peer_addr_str.is_none() || peer_addr_str.is_none() {
 682                 return Err(std::io::Error::new(
 683                         std::io::ErrorKind::Other,
 684                         "ERROR: incorrectly formatted peer
 685         info. Should be formatted as: `pubkey@host:port`",
 686                 ));
 687         }
 688
 689         let peer_addr: Result<SocketAddr, _> = peer_addr_str.unwrap().parse();
 690         if peer_addr.is_err() {
 691                 return Err(std::io::Error::new(
 692                         std::io::ErrorKind::Other,
 693                         "ERROR: couldn't parse pubkey@host:port into a socket address",
 694                 ));
 695         }
 696
 697         let pubkey = hex_utils::to_compressed_pubkey(pubkey.unwrap());
 698         if pubkey.is_none() {
 699                 return Err(std::io::Error::new(
 700                         std::io::ErrorKind::Other,
 701                         "ERROR: unable to parse given pubkey for node",
 702                 ));
 703         }
 704
 705         Ok((pubkey.unwrap(), peer_addr.unwrap()))
 706 }