_ 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 rand;
  20 use rand::Rng;
  21 use std::env;
  22 use std::io;
  23 use std::io::{BufRead, Write};
  24 use std::net::{SocketAddr, TcpStream};
  25 use std::ops::Deref;
  26 use std::path::Path;
  27 use std::str::FromStr;
  28 use std::sync::Arc;
  29 use std::time::Duration;
  30 use tokio::sync::mpsc;
  31
  32 pub(crate) struct LdkUserInfo {
  33         pub(crate) bitcoind_rpc_username: String,
  34         pub(crate) bitcoind_rpc_password: String,
  35         pub(crate) bitcoind_rpc_port: u16,
  36         pub(crate) bitcoind_rpc_host: String,
  37         pub(crate) ldk_storage_dir_path: String,
  38         pub(crate) ldk_peer_listening_port: u16,
  39         pub(crate) network: Network,
  40 }
  41
  42 pub(crate) fn parse_startup_args() -> Result<LdkUserInfo, ()> {
  43         if env::args().len() < 4 {
  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]`");
  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         Ok(LdkUserInfo {
  91                 bitcoind_rpc_username,
  92                 bitcoind_rpc_password,
  93                 bitcoind_rpc_host,
  94                 bitcoind_rpc_port,
  95                 ldk_storage_dir_path,
  96                 ldk_peer_listening_port,
  97                 network,
  98         })
  99 }
 100
 101 pub(crate) async fn poll_for_user_input(
 102         peer_manager: Arc<PeerManager>, channel_manager: Arc<ChannelManager>,
 103         router: Arc<NetGraphMsgHandler<Arc<dyn chain::Access>, Arc<FilesystemLogger>>>,
 104         inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage,
 105         node_privkey: SecretKey, event_notifier: mpsc::Sender<()>, ldk_data_dir: String,
 106         logger: Arc<FilesystemLogger>, network: Network,
 107 ) {
 108         println!("LDK startup successful. To view available commands: \"help\".\nLDK logs are available at <your-supplied-ldk-data-dir-path>/.ldk/logs");
 109         let stdin = io::stdin();
 110         print!("> ");
 111         io::stdout().flush().unwrap(); // Without flushing, the `>` doesn't print
 112         for line in stdin.lock().lines() {
 113                 let _ = event_notifier.try_send(());
 114                 let line = line.unwrap();
 115                 let mut words = line.split_whitespace();
 116                 if let Some(word) = words.next() {
 117                         match word {
 118                                 "help" => help(),
 119                                 "openchannel" => {
 120                                         let peer_pubkey_and_ip_addr = words.next();
 121                                         let channel_value_sat = words.next();
 122                                         if peer_pubkey_and_ip_addr.is_none() || channel_value_sat.is_none() {
 123                                                 println!("ERROR: openchannel has 2 required arguments: `openchannel pubkey@host:port channel_amt_satoshis` [--public]");
 124                                                 print!("> ");
 125                                                 io::stdout().flush().unwrap();
 126                                                 continue;
 127                                         }
 128                                         let peer_pubkey_and_ip_addr = peer_pubkey_and_ip_addr.unwrap();
 129                                         let (pubkey, peer_addr) =
 130                                                 match parse_peer_info(peer_pubkey_and_ip_addr.to_string()) {
 131                                                         Ok(info) => info,
 132                                                         Err(e) => {
 133                                                                 println!("{:?}", e.into_inner().unwrap());
 134                                                                 print!("> ");
 135                                                                 io::stdout().flush().unwrap();
 136                                                                 continue;
 137                                                         }
 138                                                 };
 139
 140                                         let chan_amt_sat: Result<u64, _> = channel_value_sat.unwrap().parse();
 141                                         if chan_amt_sat.is_err() {
 142                                                 println!("ERROR: channel amount must be a number");
 143                                                 print!("> ");
 144                                                 io::stdout().flush().unwrap();
 145                                                 continue;
 146                                         }
 147
 148                                         if connect_peer_if_necessary(
 149                                                 pubkey,
 150                                                 peer_addr,
 151                                                 peer_manager.clone(),
 152                                                 event_notifier.clone(),
 153                                         )
 154                                         .is_err()
 155                                         {
 156                                                 print!("> ");
 157                                                 io::stdout().flush().unwrap();
 158                                                 continue;
 159                                         };
 160
 161                                         let announce_channel = match words.next() {
 162                                                 Some("--public") | Some("--public=true") => true,
 163                                                 Some("--public=false") => false,
 164                                                 Some(_) => {
 165                                                         println!("ERROR: invalid `--public` command format. Valid formats: `--public`, `--public=true` `--public=false`");
 166                                                         print!("> ");
 167                                                         io::stdout().flush().unwrap();
 168                                                         continue;
 169                                                 }
 170                                                 None => false,
 171                                         };
 172
 173                                         if open_channel(
 174                                                 pubkey,
 175                                                 chan_amt_sat.unwrap(),
 176                                                 announce_channel,
 177                                                 channel_manager.clone(),
 178                                         )
 179                                         .is_ok()
 180                                         {
 181                                                 let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone());
 182                                                 let _ = disk::persist_channel_peer(
 183                                                         Path::new(&peer_data_path),
 184                                                         peer_pubkey_and_ip_addr,
 185                                                 );
 186                                         }
 187                                 }
 188                                 "sendpayment" => {
 189                                         let invoice_str = words.next();
 190                                         if invoice_str.is_none() {
 191                                                 println!("ERROR: sendpayment requires an invoice: `sendpayment <invoice>`");
 192                                                 print!("> ");
 193                                                 io::stdout().flush().unwrap();
 194                                                 continue;
 195                                         }
 196
 197                                         let invoice_res = lightning_invoice::Invoice::from_str(invoice_str.unwrap());
 198                                         if invoice_res.is_err() {
 199                                                 println!("ERROR: invalid invoice: {:?}", invoice_res.unwrap_err());
 200                                                 print!("> ");
 201                                                 io::stdout().flush().unwrap();
 202                                                 continue;
 203                                         }
 204                                         let invoice = invoice_res.unwrap();
 205                                         let route_hints: Vec<lightning_invoice::Route> =
 206                                                 invoice.routes().iter().map(|&route| route.clone()).collect();
 207
 208                                         let amt_pico_btc = invoice.amount_pico_btc();
 209                                         if amt_pico_btc.is_none() {
 210                                                 println!("ERROR: invalid invoice: must contain amount to pay");
 211                                                 print!("> ");
 212                                                 io::stdout().flush().unwrap();
 213                                                 continue;
 214                                         }
 215                                         let amt_msat = amt_pico_btc.unwrap() / 10;
 216
 217                                         let payee_pubkey = invoice.recover_payee_pub_key();
 218                                         let final_cltv = *invoice.min_final_cltv_expiry().unwrap_or(&9) as u32;
 219
 220                                         let mut payment_hash = PaymentHash([0; 32]);
 221                                         payment_hash.0.copy_from_slice(&invoice.payment_hash().as_ref()[0..32]);
 222
 223                                         let payment_secret = match invoice.payment_secret() {
 224                                                 Some(secret) => {
 225                                                         let mut payment_secret = PaymentSecret([0; 32]);
 226                                                         payment_secret.0.copy_from_slice(&secret.0);
 227                                                         Some(payment_secret)
 228                                                 }
 229                                                 None => None,
 230                                         };
 231
 232                                         // rust-lightning-invoice doesn't currently support features, so we parse features
 233                                         // manually from the invoice.
 234                                         let mut invoice_features = InvoiceFeatures::empty();
 235                                         for field in &invoice.into_signed_raw().raw_invoice().data.tagged_fields {
 236                                                 match field {
 237                                                         lightning_invoice::RawTaggedField::UnknownSemantics(vec) => {
 238                                                                 if vec[0] == bech32::u5::try_from_u8(5).unwrap() {
 239                                                                         if vec.len() >= 6 && vec[5].to_u8() & 0b10000 != 0 {
 240                                                                                 invoice_features =
 241                                                                                         invoice_features.set_variable_length_onion_optional();
 242                                                                         }
 243                                                                         if vec.len() >= 6 && vec[5].to_u8() & 0b01000 != 0 {
 244                                                                                 invoice_features =
 245                                                                                         invoice_features.set_variable_length_onion_required();
 246                                                                         }
 247                                                                         if vec.len() >= 4 && vec[3].to_u8() & 0b00001 != 0 {
 248                                                                                 invoice_features =
 249                                                                                         invoice_features.set_payment_secret_optional();
 250                                                                         }
 251                                                                         if vec.len() >= 5 && vec[4].to_u8() & 0b10000 != 0 {
 252                                                                                 invoice_features =
 253                                                                                         invoice_features.set_payment_secret_required();
 254                                                                         }
 255                                                                         if vec.len() >= 4 && vec[3].to_u8() & 0b00100 != 0 {
 256                                                                                 invoice_features =
 257                                                                                         invoice_features.set_basic_mpp_optional();
 258                                                                         }
 259                                                                         if vec.len() >= 4 && vec[3].to_u8() & 0b00010 != 0 {
 260                                                                                 invoice_features =
 261                                                                                         invoice_features.set_basic_mpp_required();
 262                                                                         }
 263                                                                 }
 264                                                         }
 265                                                         _ => {}
 266                                                 }
 267                                         }
 268                                         let invoice_features_opt = match invoice_features == InvoiceFeatures::empty() {
 269                                                 true => None,
 270                                                 false => Some(invoice_features),
 271                                         };
 272                                         send_payment(
 273                                                 payee_pubkey,
 274                                                 amt_msat,
 275                                                 final_cltv,
 276                                                 payment_hash,
 277                                                 payment_secret,
 278                                                 invoice_features_opt,
 279                                                 route_hints,
 280                                                 router.clone(),
 281                                                 channel_manager.clone(),
 282                                                 outbound_payments.clone(),
 283                                                 logger.clone(),
 284                                         );
 285                                 }
 286                                 "getinvoice" => {
 287                                         let amt_str = words.next();
 288                                         if amt_str.is_none() {
 289                                                 println!("ERROR: getinvoice requires an amount in millisatoshis");
 290                                                 print!("> ");
 291                                                 io::stdout().flush().unwrap();
 292                                                 continue;
 293                                         }
 294
 295                                         let amt_msat: Result<u64, _> = amt_str.unwrap().parse();
 296                                         if amt_msat.is_err() {
 297                                                 println!("ERROR: getinvoice provided payment amount was not a number");
 298                                                 print!("> ");
 299                                                 io::stdout().flush().unwrap();
 300                                                 continue;
 301                                         }
 302                                         get_invoice(
 303                                                 amt_msat.unwrap(),
 304                                                 inbound_payments.clone(),
 305                                                 node_privkey.clone(),
 306                                                 channel_manager.clone(),
 307                                                 network,
 308                                         );
 309                                 }
 310                                 "connectpeer" => {
 311                                         let peer_pubkey_and_ip_addr = words.next();
 312                                         if peer_pubkey_and_ip_addr.is_none() {
 313                                                 println!("ERROR: connectpeer requires peer connection info: `connectpeer pubkey@host:port`");
 314                                                 print!("> ");
 315                                                 io::stdout().flush().unwrap();
 316                                                 continue;
 317                                         }
 318                                         let (pubkey, peer_addr) =
 319                                                 match parse_peer_info(peer_pubkey_and_ip_addr.unwrap().to_string()) {
 320                                                         Ok(info) => info,
 321                                                         Err(e) => {
 322                                                                 println!("{:?}", e.into_inner().unwrap());
 323                                                                 print!("> ");
 324                                                                 io::stdout().flush().unwrap();
 325                                                                 continue;
 326                                                         }
 327                                                 };
 328                                         if connect_peer_if_necessary(
 329                                                 pubkey,
 330                                                 peer_addr,
 331                                                 peer_manager.clone(),
 332                                                 event_notifier.clone(),
 333                                         )
 334                                         .is_ok()
 335                                         {
 336                                                 println!("SUCCESS: connected to peer {}", pubkey);
 337                                         }
 338                                 }
 339                                 "listchannels" => list_channels(channel_manager.clone()),
 340                                 "listpayments" => {
 341                                         list_payments(inbound_payments.clone(), outbound_payments.clone())
 342                                 }
 343                                 "closechannel" => {
 344                                         let channel_id_str = words.next();
 345                                         if channel_id_str.is_none() {
 346                                                 println!("ERROR: closechannel requires a channel ID: `closechannel <channel_id>`");
 347                                                 print!("> ");
 348                                                 io::stdout().flush().unwrap();
 349                                                 continue;
 350                                         }
 351                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 352                                         if channel_id_vec.is_none() {
 353                                                 println!("ERROR: couldn't parse channel_id as hex");
 354                                                 print!("> ");
 355                                                 io::stdout().flush().unwrap();
 356                                                 continue;
 357                                         }
 358                                         let mut channel_id = [0; 32];
 359                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 360                                         close_channel(channel_id, channel_manager.clone());
 361                                 }
 362                                 "forceclosechannel" => {
 363                                         let channel_id_str = words.next();
 364                                         if channel_id_str.is_none() {
 365                                                 println!("ERROR: forceclosechannel requires a channel ID: `forceclosechannel <channel_id>`");
 366                                                 print!("> ");
 367                                                 io::stdout().flush().unwrap();
 368                                                 continue;
 369                                         }
 370                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 371                                         if channel_id_vec.is_none() {
 372                                                 println!("ERROR: couldn't parse channel_id as hex");
 373                                                 print!("> ");
 374                                                 io::stdout().flush().unwrap();
 375                                                 continue;
 376                                         }
 377                                         let mut channel_id = [0; 32];
 378                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 379                                         force_close_channel(channel_id, channel_manager.clone());
 380                                 }
 381                                 _ => println!("Unknown command. See `\"help\" for available commands."),
 382                         }
 383                 }
 384                 print!("> ");
 385                 io::stdout().flush().unwrap();
 386         }
 387 }
 388
 389 fn help() {
 390         println!("openchannel pubkey@host:port <channel_amt_satoshis>");
 391         println!("sendpayment <invoice>");
 392         println!("getinvoice <amt_in_millisatoshis>");
 393         println!("connectpeer pubkey@host:port");
 394         println!("listchannels");
 395         println!("listpayments");
 396         println!("closechannel <channel_id>");
 397         println!("forceclosechannel <channel_id>");
 398 }
 399
 400 fn list_channels(channel_manager: Arc<ChannelManager>) {
 401         print!("[");
 402         for chan_info in channel_manager.list_channels() {
 403                 println!("");
 404                 println!("\t{{");
 405                 println!("\t\tchannel_id: {},", hex_utils::hex_str(&chan_info.channel_id[..]));
 406                 println!(
 407                         "\t\tpeer_pubkey: {},",
 408                         hex_utils::hex_str(&chan_info.remote_network_id.serialize())
 409                 );
 410                 let mut pending_channel = false;
 411                 match chan_info.short_channel_id {
 412                         Some(id) => println!("\t\tshort_channel_id: {},", id),
 413                         None => {
 414                                 pending_channel = true;
 415                         }
 416                 }
 417                 println!("\t\tpending_open: {},", pending_channel);
 418                 println!("\t\tchannel_value_satoshis: {},", chan_info.channel_value_satoshis);
 419                 println!("\t\tchannel_can_send_payments: {},", chan_info.is_live);
 420                 println!("\t}},");
 421         }
 422         println!("]");
 423 }
 424
 425 fn list_payments(inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage) {
 426         let inbound = inbound_payments.lock().unwrap();
 427         let outbound = outbound_payments.lock().unwrap();
 428         print!("[");
 429         for (payment_hash, payment_info) in inbound.deref() {
 430                 println!("");
 431                 println!("\t{{");
 432                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 433                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 434                 println!("\t\thtlc_direction: inbound,");
 435                 println!(
 436                         "\t\thtlc_status: {},",
 437                         match payment_info.status {
 438                                 HTLCStatus::Pending => "pending",
 439                                 HTLCStatus::Succeeded => "succeeded",
 440                                 HTLCStatus::Failed => "failed",
 441                         }
 442                 );
 443
 444                 println!("\t}},");
 445         }
 446
 447         for (payment_hash, payment_info) in outbound.deref() {
 448                 println!("");
 449                 println!("\t{{");
 450                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 451                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 452                 println!("\t\thtlc_direction: outbound,");
 453                 println!(
 454                         "\t\thtlc_status: {},",
 455                         match payment_info.status {
 456                                 HTLCStatus::Pending => "pending",
 457                                 HTLCStatus::Succeeded => "succeeded",
 458                                 HTLCStatus::Failed => "failed",
 459                         }
 460                 );
 461
 462                 println!("\t}},");
 463         }
 464         println!("]");
 465 }
 466
 467 pub(crate) fn connect_peer_if_necessary(
 468         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 469         event_notifier: mpsc::Sender<()>,
 470 ) -> Result<(), ()> {
 471         for node_pubkey in peer_manager.get_peer_node_ids() {
 472                 if node_pubkey == pubkey {
 473                         return Ok(());
 474                 }
 475         }
 476         match TcpStream::connect_timeout(&peer_addr, Duration::from_secs(10)) {
 477                 Ok(stream) => {
 478                         let peer_mgr = peer_manager.clone();
 479                         let event_ntfns = event_notifier.clone();
 480                         tokio::spawn(async move {
 481                                 lightning_net_tokio::setup_outbound(peer_mgr, event_ntfns, pubkey, stream).await;
 482                         });
 483                         let mut peer_connected = false;
 484                         while !peer_connected {
 485                                 for node_pubkey in peer_manager.get_peer_node_ids() {
 486                                         if node_pubkey == pubkey {
 487                                                 peer_connected = true;
 488                                         }
 489                                 }
 490                         }
 491                 }
 492                 Err(e) => {
 493                         println!("ERROR: failed to connect to peer: {:?}", e);
 494                         return Err(());
 495                 }
 496         }
 497         Ok(())
 498 }
 499
 500 fn open_channel(
 501         peer_pubkey: PublicKey, channel_amt_sat: u64, announce_channel: bool,
 502         channel_manager: Arc<ChannelManager>,
 503 ) -> Result<(), ()> {
 504         let mut config = UserConfig::default();
 505         if announce_channel {
 506                 config.channel_options.announced_channel = true;
 507         }
 508         // lnd's max to_self_delay is 2016, so we want to be compatible.
 509         config.peer_channel_config_limits.their_to_self_delay = 2016;
 510         match channel_manager.create_channel(peer_pubkey, channel_amt_sat, 0, 0, None) {
 511                 Ok(_) => {
 512                         println!("EVENT: initiated channel with peer {}. ", peer_pubkey);
 513                         return Ok(());
 514                 }
 515                 Err(e) => {
 516                         println!("ERROR: failed to open channel: {:?}", e);
 517                         return Err(());
 518                 }
 519         }
 520 }
 521
 522 fn send_payment(
 523         payee: PublicKey, amt_msat: u64, final_cltv: u32, payment_hash: PaymentHash,
 524         payment_secret: Option<PaymentSecret>, payee_features: Option<InvoiceFeatures>,
 525         mut route_hints: Vec<lightning_invoice::Route>,
 526         router: Arc<NetGraphMsgHandler<Arc<dyn chain::Access>, Arc<FilesystemLogger>>>,
 527         channel_manager: Arc<ChannelManager>, payment_storage: PaymentInfoStorage,
 528         logger: Arc<FilesystemLogger>,
 529 ) {
 530         let network_graph = router.network_graph.read().unwrap();
 531         let first_hops = channel_manager.list_usable_channels();
 532         let payer_pubkey = channel_manager.get_our_node_id();
 533
 534         let mut hints: Vec<RouteHint> = Vec::new();
 535         for route in route_hints.drain(..) {
 536                 let route_hops = route.into_inner();
 537                 let last_hop = &route_hops[route_hops.len() - 1];
 538                 hints.push(RouteHint {
 539                         src_node_id: last_hop.pubkey,
 540                         short_channel_id: u64::from_be_bytes(last_hop.short_channel_id),
 541                         fees: RoutingFees {
 542                                 base_msat: last_hop.fee_base_msat,
 543                                 proportional_millionths: last_hop.fee_proportional_millionths,
 544                         },
 545                         cltv_expiry_delta: last_hop.cltv_expiry_delta,
 546                         htlc_minimum_msat: None,
 547                         htlc_maximum_msat: None,
 548                 })
 549         }
 550         let route = router::get_route(
 551                 &payer_pubkey,
 552                 &network_graph,
 553                 &payee,
 554                 payee_features,
 555                 Some(&first_hops.iter().collect::<Vec<_>>()),
 556                 &hints.iter().collect::<Vec<_>>(),
 557                 amt_msat,
 558                 final_cltv,
 559                 logger,
 560         );
 561         if let Err(e) = route {
 562                 println!("ERROR: failed to find route: {}", e.err);
 563                 return;
 564         }
 565         let status = match channel_manager.send_payment(&route.unwrap(), payment_hash, &payment_secret)
 566         {
 567                 Ok(()) => {
 568                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee);
 569                         HTLCStatus::Pending
 570                 }
 571                 Err(e) => {
 572                         println!("ERROR: failed to send payment: {:?}", e);
 573                         HTLCStatus::Failed
 574                 }
 575         };
 576         let mut payments = payment_storage.lock().unwrap();
 577         payments.insert(
 578                 payment_hash,
 579                 PaymentInfo {
 580                         preimage: None,
 581                         secret: payment_secret,
 582                         status,
 583                         amt_msat: MillisatAmount(Some(amt_msat)),
 584                 },
 585         );
 586 }
 587
 588 fn get_invoice(
 589         amt_msat: u64, payment_storage: PaymentInfoStorage, our_node_privkey: SecretKey,
 590         channel_manager: Arc<ChannelManager>, network: Network,
 591 ) {
 592         let mut payments = payment_storage.lock().unwrap();
 593         let secp_ctx = Secp256k1::new();
 594
 595         let mut preimage = [0; 32];
 596         rand::thread_rng().fill_bytes(&mut preimage);
 597         let payment_hash = Sha256Hash::hash(&preimage);
 598
 599         let our_node_pubkey = channel_manager.get_our_node_id();
 600         let mut invoice = lightning_invoice::InvoiceBuilder::new(match network {
 601                 Network::Bitcoin => lightning_invoice::Currency::Bitcoin,
 602                 Network::Testnet => lightning_invoice::Currency::BitcoinTestnet,
 603                 Network::Regtest => lightning_invoice::Currency::Regtest,
 604                 Network::Signet => panic!("Signet invoices not supported"),
 605         })
 606         .payment_hash(payment_hash)
 607         .description("rust-lightning-bitcoinrpc invoice".to_string())
 608         .amount_pico_btc(amt_msat * 10)
 609         .current_timestamp()
 610         .payee_pub_key(our_node_pubkey);
 611
 612         // Add route hints to the invoice.
 613         let our_channels = channel_manager.list_usable_channels();
 614         let mut min_final_cltv_expiry = 9;
 615         for channel in our_channels {
 616                 let short_channel_id = match channel.short_channel_id {
 617                         Some(id) => id.to_be_bytes(),
 618                         None => continue,
 619                 };
 620                 let forwarding_info = match channel.counterparty_forwarding_info {
 621                         Some(info) => info,
 622                         None => continue,
 623                 };
 624                 if forwarding_info.cltv_expiry_delta > min_final_cltv_expiry {
 625                         min_final_cltv_expiry = forwarding_info.cltv_expiry_delta;
 626                 }
 627                 invoice = invoice.route(vec![lightning_invoice::RouteHop {
 628                         pubkey: channel.remote_network_id,
 629                         short_channel_id,
 630                         fee_base_msat: forwarding_info.fee_base_msat,
 631                         fee_proportional_millionths: forwarding_info.fee_proportional_millionths,
 632                         cltv_expiry_delta: forwarding_info.cltv_expiry_delta,
 633                 }]);
 634         }
 635         invoice = invoice.min_final_cltv_expiry(min_final_cltv_expiry.into());
 636
 637         // Sign the invoice.
 638         let invoice =
 639                 invoice.build_signed(|msg_hash| secp_ctx.sign_recoverable(msg_hash, &our_node_privkey));
 640
 641         match invoice {
 642                 Ok(invoice) => println!("SUCCESS: generated invoice: {}", invoice),
 643                 Err(e) => println!("ERROR: failed to create invoice: {:?}", e),
 644         }
 645
 646         payments.insert(
 647                 PaymentHash(payment_hash.into_inner()),
 648                 PaymentInfo {
 649                         preimage: Some(PaymentPreimage(preimage)),
 650                         // We can't add payment secrets to invoices until we support features in invoices.
 651                         // Otherwise lnd errors with "destination hop doesn't understand payment addresses"
 652                         // (for context, lnd calls payment secrets "payment addresses").
 653                         secret: None,
 654                         status: HTLCStatus::Pending,
 655                         amt_msat: MillisatAmount(Some(amt_msat)),
 656                 },
 657         );
 658 }
 659
 660 fn close_channel(channel_id: [u8; 32], channel_manager: Arc<ChannelManager>) {
 661         match channel_manager.close_channel(&channel_id) {
 662                 Ok(()) => println!("EVENT: initiating channel close"),
 663                 Err(e) => println!("ERROR: failed to close channel: {:?}", e),
 664         }
 665 }
 666
 667 fn force_close_channel(channel_id: [u8; 32], channel_manager: Arc<ChannelManager>) {
 668         match channel_manager.force_close_channel(&channel_id) {
 669                 Ok(()) => println!("EVENT: initiating channel force-close"),
 670                 Err(e) => println!("ERROR: failed to force-close channel: {:?}", e),
 671         }
 672 }
 673
 674 pub(crate) fn parse_peer_info(
 675         peer_pubkey_and_ip_addr: String,
 676 ) -> Result<(PublicKey, SocketAddr), std::io::Error> {
 677         let mut pubkey_and_addr = peer_pubkey_and_ip_addr.split("@");
 678         let pubkey = pubkey_and_addr.next();
 679         let peer_addr_str = pubkey_and_addr.next();
 680         if peer_addr_str.is_none() || peer_addr_str.is_none() {
 681                 return Err(std::io::Error::new(
 682                         std::io::ErrorKind::Other,
 683                         "ERROR: incorrectly formatted peer
 684         info. Should be formatted as: `pubkey@host:port`",
 685                 ));
 686         }
 687
 688         let peer_addr: Result<SocketAddr, _> = peer_addr_str.unwrap().parse();
 689         if peer_addr.is_err() {
 690                 return Err(std::io::Error::new(
 691                         std::io::ErrorKind::Other,
 692                         "ERROR: couldn't parse pubkey@host:port into a socket address",
 693                 ));
 694         }
 695
 696         let pubkey = hex_utils::to_compressed_pubkey(pubkey.unwrap());
 697         if pubkey.is_none() {
 698                 return Err(std::io::Error::new(
 699                         std::io::ErrorKind::Other,
 700                         "ERROR: unable to parse given pubkey for node",
 701                 ));
 702         }
 703
 704         Ok((pubkey.unwrap(), peer_addr.unwrap()))
 705 }