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

   1 use crate::disk;
   2 use crate::hex_utils;
   3 use crate::{
   4         ChannelManager, FilesystemLogger, HTLCStatus, InvoicePayer, MillisatAmount, PaymentInfo,
   5         PaymentInfoStorage, PeerManager,
   6 };
   7 use bitcoin::hashes::Hash;
   8 use bitcoin::network::constants::Network;
   9 use bitcoin::secp256k1::key::PublicKey;
  10 use lightning::chain::keysinterface::{KeysInterface, KeysManager};
  11 use lightning::ln::msgs::NetAddress;
  12 use lightning::ln::PaymentHash;
  13 use lightning::routing::network_graph::NetworkGraph;
  14 use lightning::routing::router;
  15 use lightning::routing::router::{Payee, RouteParameters};
  16 use lightning::routing::scorer::Scorer;
  17 use lightning::util::config::{ChannelConfig, ChannelHandshakeLimits, UserConfig};
  18 use lightning::util::events::EventHandler;
  19 use lightning_invoice::payment::PaymentError;
  20 use lightning_invoice::{utils, Currency, Invoice};
  21 use std::env;
  22 use std::io;
  23 use std::io::{BufRead, Write};
  24 use std::net::{IpAddr, SocketAddr, ToSocketAddrs};
  25 use std::ops::Deref;
  26 use std::path::Path;
  27 use std::str::FromStr;
  28 use std::sync::{Arc, Mutex};
  29 use std::time::Duration;
  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) ldk_announced_listen_addr: Vec<NetAddress>,
  39         pub(crate) ldk_announced_node_name: [u8; 32],
  40         pub(crate) network: Network,
  41 }
  42
  43 pub(crate) fn parse_startup_args() -> Result<LdkUserInfo, ()> {
  44         if env::args().len() < 3 {
  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] [announced-node-name announced-listen-addr*]`");
  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.rsplitn(2, "@").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[1].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[0].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(_)) => {
  75                         ldk_peer_port_set = false;
  76                         9735
  77                 }
  78                 None => {
  79                         ldk_peer_port_set = false;
  80                         9735
  81                 }
  82         };
  83
  84         let mut arg_idx = match ldk_peer_port_set {
  85                 true => 4,
  86                 false => 3,
  87         };
  88         let network: Network = match env::args().skip(arg_idx).next().as_ref().map(String::as_str) {
  89                 Some("testnet") => Network::Testnet,
  90                 Some("regtest") => Network::Regtest,
  91                 Some(net) => {
  92                         panic!("Unsupported network provided. Options are: `regtest`, `testnet`. Got {}", net);
  93                 }
  94                 None => Network::Testnet,
  95         };
  96
  97         let ldk_announced_node_name = match env::args().skip(arg_idx + 1).next().as_ref() {
  98                 Some(s) => {
  99                         if s.len() > 32 {
 100                                 panic!("Node Alias can not be longer than 32 bytes");
 101                         }
 102                         arg_idx += 1;
 103                         let mut bytes = [0; 32];
 104                         bytes[..s.len()].copy_from_slice(s.as_bytes());
 105                         bytes
 106                 }
 107                 None => [0; 32],
 108         };
 109
 110         let mut ldk_announced_listen_addr = Vec::new();
 111         loop {
 112                 match env::args().skip(arg_idx + 1).next().as_ref() {
 113                         Some(s) => match IpAddr::from_str(s) {
 114                                 Ok(IpAddr::V4(a)) => {
 115                                         ldk_announced_listen_addr
 116                                                 .push(NetAddress::IPv4 { addr: a.octets(), port: ldk_peer_listening_port });
 117                                         arg_idx += 1;
 118                                 }
 119                                 Ok(IpAddr::V6(a)) => {
 120                                         ldk_announced_listen_addr
 121                                                 .push(NetAddress::IPv6 { addr: a.octets(), port: ldk_peer_listening_port });
 122                                         arg_idx += 1;
 123                                 }
 124                                 Err(_) => panic!("Failed to parse announced-listen-addr into an IP address"),
 125                         },
 126                         None => break,
 127                 }
 128         }
 129
 130         Ok(LdkUserInfo {
 131                 bitcoind_rpc_username,
 132                 bitcoind_rpc_password,
 133                 bitcoind_rpc_host,
 134                 bitcoind_rpc_port,
 135                 ldk_storage_dir_path,
 136                 ldk_peer_listening_port,
 137                 ldk_announced_listen_addr,
 138                 ldk_announced_node_name,
 139                 network,
 140         })
 141 }
 142
 143 pub(crate) async fn poll_for_user_input<E: EventHandler>(
 144         invoice_payer: Arc<InvoicePayer<E>>, peer_manager: Arc<PeerManager>,
 145         channel_manager: Arc<ChannelManager>, keys_manager: Arc<KeysManager>,
 146         network_graph: Arc<NetworkGraph>, scorer: Arc<Mutex<Scorer>>,
 147         inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage,
 148         ldk_data_dir: String, logger: Arc<FilesystemLogger>, network: Network,
 149 ) {
 150         println!("LDK startup successful. To view available commands: \"help\".");
 151         println!("LDK logs are available at <your-supplied-ldk-data-dir-path>/.ldk/logs");
 152         println!("Local Node ID is {}.", channel_manager.get_our_node_id());
 153         let stdin = io::stdin();
 154         let mut line_reader = stdin.lock().lines();
 155         loop {
 156                 print!("> ");
 157                 io::stdout().flush().unwrap(); // Without flushing, the `>` doesn't print
 158                 let line = match line_reader.next() {
 159                         Some(l) => l.unwrap(),
 160                         None => break,
 161                 };
 162                 let mut words = line.split_whitespace();
 163                 if let Some(word) = words.next() {
 164                         match word {
 165                                 "help" => help(),
 166                                 "openchannel" => {
 167                                         let peer_pubkey_and_ip_addr = words.next();
 168                                         let channel_value_sat = words.next();
 169                                         if peer_pubkey_and_ip_addr.is_none() || channel_value_sat.is_none() {
 170                                                 println!("ERROR: openchannel has 2 required arguments: `openchannel pubkey@host:port channel_amt_satoshis` [--public]");
 171                                                 continue;
 172                                         }
 173                                         let peer_pubkey_and_ip_addr = peer_pubkey_and_ip_addr.unwrap();
 174                                         let (pubkey, peer_addr) =
 175                                                 match parse_peer_info(peer_pubkey_and_ip_addr.to_string()) {
 176                                                         Ok(info) => info,
 177                                                         Err(e) => {
 178                                                                 println!("{:?}", e.into_inner().unwrap());
 179                                                                 continue;
 180                                                         }
 181                                                 };
 182
 183                                         let chan_amt_sat: Result<u64, _> = channel_value_sat.unwrap().parse();
 184                                         if chan_amt_sat.is_err() {
 185                                                 println!("ERROR: channel amount must be a number");
 186                                                 continue;
 187                                         }
 188
 189                                         if connect_peer_if_necessary(pubkey, peer_addr, peer_manager.clone())
 190                                                 .await
 191                                                 .is_err()
 192                                         {
 193                                                 continue;
 194                                         };
 195
 196                                         let announce_channel = match words.next() {
 197                                                 Some("--public") | Some("--public=true") => true,
 198                                                 Some("--public=false") => false,
 199                                                 Some(_) => {
 200                                                         println!("ERROR: invalid `--public` command format. Valid formats: `--public`, `--public=true` `--public=false`");
 201                                                         continue;
 202                                                 }
 203                                                 None => false,
 204                                         };
 205
 206                                         if open_channel(
 207                                                 pubkey,
 208                                                 chan_amt_sat.unwrap(),
 209                                                 announce_channel,
 210                                                 channel_manager.clone(),
 211                                         )
 212                                         .is_ok()
 213                                         {
 214                                                 let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone());
 215                                                 let _ = disk::persist_channel_peer(
 216                                                         Path::new(&peer_data_path),
 217                                                         peer_pubkey_and_ip_addr,
 218                                                 );
 219                                         }
 220                                 }
 221                                 "sendpayment" => {
 222                                         let invoice_str = words.next();
 223                                         if invoice_str.is_none() {
 224                                                 println!("ERROR: sendpayment requires an invoice: `sendpayment <invoice>`");
 225                                                 continue;
 226                                         }
 227
 228                                         let invoice = match Invoice::from_str(invoice_str.unwrap()) {
 229                                                 Ok(inv) => inv,
 230                                                 Err(e) => {
 231                                                         println!("ERROR: invalid invoice: {:?}", e);
 232                                                         continue;
 233                                                 }
 234                                         };
 235
 236                                         send_payment(&*invoice_payer, &invoice, outbound_payments.clone());
 237                                 }
 238                                 "keysend" => {
 239                                         let dest_pubkey = match words.next() {
 240                                                 Some(dest) => match hex_utils::to_compressed_pubkey(dest) {
 241                                                         Some(pk) => pk,
 242                                                         None => {
 243                                                                 println!("ERROR: couldn't parse destination pubkey");
 244                                                                 continue;
 245                                                         }
 246                                                 },
 247                                                 None => {
 248                                                         println!("ERROR: keysend requires a destination pubkey: `keysend <dest_pubkey> <amt_msat>`");
 249                                                         continue;
 250                                                 }
 251                                         };
 252                                         let amt_msat_str = match words.next() {
 253                                                 Some(amt) => amt,
 254                                                 None => {
 255                                                         println!("ERROR: keysend requires an amount in millisatoshis: `keysend <dest_pubkey> <amt_msat>`");
 256
 257                                                         continue;
 258                                                 }
 259                                         };
 260                                         let amt_msat: u64 = match amt_msat_str.parse() {
 261                                                 Ok(amt) => amt,
 262                                                 Err(e) => {
 263                                                         println!("ERROR: couldn't parse amount_msat: {}", e);
 264                                                         continue;
 265                                                 }
 266                                         };
 267                                         keysend(
 268                                                 dest_pubkey,
 269                                                 amt_msat,
 270                                                 network_graph.clone(),
 271                                                 channel_manager.clone(),
 272                                                 outbound_payments.clone(),
 273                                                 logger.clone(),
 274                                                 scorer.clone(),
 275                                         );
 276                                 }
 277                                 "getinvoice" => {
 278                                         let amt_str = words.next();
 279                                         if amt_str.is_none() {
 280                                                 println!("ERROR: getinvoice requires an amount in millisatoshis");
 281                                                 continue;
 282                                         }
 283
 284                                         let amt_msat: Result<u64, _> = amt_str.unwrap().parse();
 285                                         if amt_msat.is_err() {
 286                                                 println!("ERROR: getinvoice provided payment amount was not a number");
 287                                                 continue;
 288                                         }
 289                                         get_invoice(
 290                                                 amt_msat.unwrap(),
 291                                                 inbound_payments.clone(),
 292                                                 channel_manager.clone(),
 293                                                 keys_manager.clone(),
 294                                                 network,
 295                                         );
 296                                 }
 297                                 "connectpeer" => {
 298                                         let peer_pubkey_and_ip_addr = words.next();
 299                                         if peer_pubkey_and_ip_addr.is_none() {
 300                                                 println!("ERROR: connectpeer requires peer connection info: `connectpeer pubkey@host:port`");
 301                                                 continue;
 302                                         }
 303                                         let (pubkey, peer_addr) =
 304                                                 match parse_peer_info(peer_pubkey_and_ip_addr.unwrap().to_string()) {
 305                                                         Ok(info) => info,
 306                                                         Err(e) => {
 307                                                                 println!("{:?}", e.into_inner().unwrap());
 308                                                                 continue;
 309                                                         }
 310                                                 };
 311                                         if connect_peer_if_necessary(pubkey, peer_addr, peer_manager.clone())
 312                                                 .await
 313                                                 .is_ok()
 314                                         {
 315                                                 println!("SUCCESS: connected to peer {}", pubkey);
 316                                         }
 317                                 }
 318                                 "listchannels" => list_channels(channel_manager.clone()),
 319                                 "listpayments" => {
 320                                         list_payments(inbound_payments.clone(), outbound_payments.clone())
 321                                 }
 322                                 "closechannel" => {
 323                                         let channel_id_str = words.next();
 324                                         if channel_id_str.is_none() {
 325                                                 println!("ERROR: closechannel requires a channel ID: `closechannel <channel_id>`");
 326                                                 continue;
 327                                         }
 328                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 329                                         if channel_id_vec.is_none() {
 330                                                 println!("ERROR: couldn't parse channel_id as hex");
 331                                                 continue;
 332                                         }
 333                                         let mut channel_id = [0; 32];
 334                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 335                                         close_channel(channel_id, channel_manager.clone());
 336                                 }
 337                                 "forceclosechannel" => {
 338                                         let channel_id_str = words.next();
 339                                         if channel_id_str.is_none() {
 340                                                 println!("ERROR: forceclosechannel requires a channel ID: `forceclosechannel <channel_id>`");
 341                                                 continue;
 342                                         }
 343                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 344                                         if channel_id_vec.is_none() {
 345                                                 println!("ERROR: couldn't parse channel_id as hex");
 346                                                 continue;
 347                                         }
 348                                         let mut channel_id = [0; 32];
 349                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 350                                         force_close_channel(channel_id, channel_manager.clone());
 351                                 }
 352                                 "nodeinfo" => node_info(channel_manager.clone(), peer_manager.clone()),
 353                                 "listpeers" => list_peers(peer_manager.clone()),
 354                                 "signmessage" => {
 355                                         const MSG_STARTPOS: usize = "signmsg".len() + 1;
 356                                         if line.as_bytes().len() <= MSG_STARTPOS {
 357                                                 println!("ERROR: signmsg requires a message");
 358                                                 continue;
 359                                         }
 360                                         println!(
 361                                                 "{:?}",
 362                                                 lightning::util::message_signing::sign(
 363                                                         &line.as_bytes()[MSG_STARTPOS..],
 364                                                         &keys_manager.get_node_secret()
 365                                                 )
 366                                         );
 367                                 }
 368                                 _ => println!("Unknown command. See `\"help\" for available commands."),
 369                         }
 370                 }
 371         }
 372 }
 373
 374 fn help() {
 375         println!("openchannel pubkey@host:port <amt_satoshis>");
 376         println!("sendpayment <invoice>");
 377         println!("getinvoice <amt_millisatoshis>");
 378         println!("connectpeer pubkey@host:port");
 379         println!("listchannels");
 380         println!("listpayments");
 381         println!("closechannel <channel_id>");
 382         println!("forceclosechannel <channel_id>");
 383         println!("nodeinfo");
 384         println!("listpeers");
 385         println!("signmessage <message>");
 386 }
 387
 388 fn node_info(channel_manager: Arc<ChannelManager>, peer_manager: Arc<PeerManager>) {
 389         println!("\t{{");
 390         println!("\t\t node_pubkey: {}", channel_manager.get_our_node_id());
 391         let chans = channel_manager.list_channels();
 392         println!("\t\t num_channels: {}", chans.len());
 393         println!("\t\t num_usable_channels: {}", chans.iter().filter(|c| c.is_usable).count());
 394         let local_balance_msat = chans
 395                 .iter()
 396                 .map(|c| c.unspendable_punishment_reserve.unwrap_or(0) * 1000 + c.outbound_capacity_msat)
 397                 .sum::<u64>();
 398         println!("\t\t local_balance_msat: {}", local_balance_msat);
 399         println!("\t\t num_peers: {}", peer_manager.get_peer_node_ids().len());
 400         println!("\t}},");
 401 }
 402
 403 fn list_peers(peer_manager: Arc<PeerManager>) {
 404         println!("\t{{");
 405         for pubkey in peer_manager.get_peer_node_ids() {
 406                 println!("\t\t pubkey: {}", pubkey);
 407         }
 408         println!("\t}},");
 409 }
 410
 411 fn list_channels(channel_manager: Arc<ChannelManager>) {
 412         print!("[");
 413         for chan_info in channel_manager.list_channels() {
 414                 println!("");
 415                 println!("\t{{");
 416                 println!("\t\tchannel_id: {},", hex_utils::hex_str(&chan_info.channel_id[..]));
 417                 if let Some(funding_txo) = chan_info.funding_txo {
 418                         println!("\t\tfunding_txid: {},", funding_txo.txid);
 419                 }
 420                 println!(
 421                         "\t\tpeer_pubkey: {},",
 422                         hex_utils::hex_str(&chan_info.counterparty.node_id.serialize())
 423                 );
 424                 if let Some(id) = chan_info.short_channel_id {
 425                         println!("\t\tshort_channel_id: {},", id);
 426                 }
 427                 println!("\t\tis_confirmed_onchain: {},", chan_info.is_funding_locked);
 428                 println!("\t\tchannel_value_satoshis: {},", chan_info.channel_value_satoshis);
 429                 println!(
 430                         "\t\tlocal_balance_msat: {},",
 431                         chan_info.outbound_capacity_msat
 432                                 + chan_info.unspendable_punishment_reserve.unwrap_or(0) * 1000
 433                 );
 434                 if chan_info.is_usable {
 435                         println!("\t\tavailable_balance_for_send_msat: {},", chan_info.outbound_capacity_msat);
 436                         println!("\t\tavailable_balance_for_recv_msat: {},", chan_info.inbound_capacity_msat);
 437                 }
 438                 println!("\t\tchannel_can_send_payments: {},", chan_info.is_usable);
 439                 println!("\t\tpublic: {},", chan_info.is_public);
 440                 println!("\t}},");
 441         }
 442         println!("]");
 443 }
 444
 445 fn list_payments(inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage) {
 446         let inbound = inbound_payments.lock().unwrap();
 447         let outbound = outbound_payments.lock().unwrap();
 448         print!("[");
 449         for (payment_hash, payment_info) in inbound.deref() {
 450                 println!("");
 451                 println!("\t{{");
 452                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 453                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 454                 println!("\t\thtlc_direction: inbound,");
 455                 println!(
 456                         "\t\thtlc_status: {},",
 457                         match payment_info.status {
 458                                 HTLCStatus::Pending => "pending",
 459                                 HTLCStatus::Succeeded => "succeeded",
 460                                 HTLCStatus::Failed => "failed",
 461                         }
 462                 );
 463
 464                 println!("\t}},");
 465         }
 466
 467         for (payment_hash, payment_info) in outbound.deref() {
 468                 println!("");
 469                 println!("\t{{");
 470                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 471                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 472                 println!("\t\thtlc_direction: outbound,");
 473                 println!(
 474                         "\t\thtlc_status: {},",
 475                         match payment_info.status {
 476                                 HTLCStatus::Pending => "pending",
 477                                 HTLCStatus::Succeeded => "succeeded",
 478                                 HTLCStatus::Failed => "failed",
 479                         }
 480                 );
 481
 482                 println!("\t}},");
 483         }
 484         println!("]");
 485 }
 486
 487 pub(crate) async fn connect_peer_if_necessary(
 488         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 489 ) -> Result<(), ()> {
 490         for node_pubkey in peer_manager.get_peer_node_ids() {
 491                 if node_pubkey == pubkey {
 492                         return Ok(());
 493                 }
 494         }
 495         let res = do_connect_peer(pubkey, peer_addr, peer_manager).await;
 496         if res.is_err() {
 497                 println!("ERROR: failed to connect to peer");
 498         }
 499         res
 500 }
 501
 502 pub(crate) async fn do_connect_peer(
 503         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 504 ) -> Result<(), ()> {
 505         match lightning_net_tokio::connect_outbound(Arc::clone(&peer_manager), pubkey, peer_addr).await
 506         {
 507                 Some(connection_closed_future) => {
 508                         let mut connection_closed_future = Box::pin(connection_closed_future);
 509                         loop {
 510                                 match futures::poll!(&mut connection_closed_future) {
 511                                         std::task::Poll::Ready(_) => {
 512                                                 return Err(());
 513                                         }
 514                                         std::task::Poll::Pending => {}
 515                                 }
 516                                 // Avoid blocking the tokio context by sleeping a bit
 517                                 match peer_manager.get_peer_node_ids().iter().find(|id| **id == pubkey) {
 518                                         Some(_) => return Ok(()),
 519                                         None => tokio::time::sleep(Duration::from_millis(10)).await,
 520                                 }
 521                         }
 522                 }
 523                 None => Err(()),
 524         }
 525 }
 526
 527 fn open_channel(
 528         peer_pubkey: PublicKey, channel_amt_sat: u64, announced_channel: bool,
 529         channel_manager: Arc<ChannelManager>,
 530 ) -> Result<(), ()> {
 531         let config = UserConfig {
 532                 peer_channel_config_limits: ChannelHandshakeLimits {
 533                         // lnd's max to_self_delay is 2016, so we want to be compatible.
 534                         their_to_self_delay: 2016,
 535                         ..Default::default()
 536                 },
 537                 channel_options: ChannelConfig { announced_channel, ..Default::default() },
 538                 ..Default::default()
 539         };
 540
 541         match channel_manager.create_channel(peer_pubkey, channel_amt_sat, 0, 0, Some(config)) {
 542                 Ok(_) => {
 543                         println!("EVENT: initiated channel with peer {}. ", peer_pubkey);
 544                         return Ok(());
 545                 }
 546                 Err(e) => {
 547                         println!("ERROR: failed to open channel: {:?}", e);
 548                         return Err(());
 549                 }
 550         }
 551 }
 552
 553 fn send_payment<E: EventHandler>(
 554         invoice_payer: &InvoicePayer<E>, invoice: &Invoice, payment_storage: PaymentInfoStorage,
 555 ) {
 556         let status = match invoice_payer.pay_invoice(invoice) {
 557                 Ok(_payment_id) => {
 558                         let payee_pubkey = invoice.recover_payee_pub_key();
 559                         let amt_msat = invoice.amount_milli_satoshis().unwrap();
 560                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee_pubkey);
 561                         print!("> ");
 562                         HTLCStatus::Pending
 563                 }
 564                 Err(PaymentError::Invoice(e)) => {
 565                         println!("ERROR: invalid invoice: {}", e);
 566                         print!("> ");
 567                         return;
 568                 }
 569                 Err(PaymentError::Routing(e)) => {
 570                         println!("ERROR: failed to find route: {}", e.err);
 571                         print!("> ");
 572                         return;
 573                 }
 574                 Err(PaymentError::Sending(e)) => {
 575                         println!("ERROR: failed to send payment: {:?}", e);
 576                         print!("> ");
 577                         HTLCStatus::Failed
 578                 }
 579         };
 580         let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
 581         let payment_secret = Some(invoice.payment_secret().clone());
 582
 583         let mut payments = payment_storage.lock().unwrap();
 584         payments.insert(
 585                 payment_hash,
 586                 PaymentInfo {
 587                         preimage: None,
 588                         secret: payment_secret,
 589                         status,
 590                         amt_msat: MillisatAmount(invoice.amount_milli_satoshis()),
 591                 },
 592         );
 593 }
 594
 595 fn keysend(
 596         payee_pubkey: PublicKey, amt_msat: u64, network_graph: Arc<NetworkGraph>,
 597         channel_manager: Arc<ChannelManager>, payment_storage: PaymentInfoStorage,
 598         logger: Arc<FilesystemLogger>, scorer: Arc<Mutex<Scorer>>,
 599 ) {
 600         let first_hops = channel_manager.list_usable_channels();
 601         let payer_pubkey = channel_manager.get_our_node_id();
 602
 603         let payee = Payee::for_keysend(payee_pubkey);
 604         let params = RouteParameters { payee, final_value_msat: amt_msat, final_cltv_expiry_delta: 40 };
 605
 606         let route = match router::find_route(
 607                 &payer_pubkey,
 608                 &params,
 609                 &network_graph,
 610                 Some(&first_hops.iter().collect::<Vec<_>>()),
 611                 logger,
 612                 &scorer.lock().unwrap(),
 613         ) {
 614                 Ok(r) => r,
 615                 Err(e) => {
 616                         println!("ERROR: failed to find route: {}", e.err);
 617                         return;
 618                 }
 619         };
 620
 621         let mut payments = payment_storage.lock().unwrap();
 622         let payment_hash = channel_manager.send_spontaneous_payment(&route, None).unwrap().0;
 623         payments.insert(
 624                 payment_hash,
 625                 PaymentInfo {
 626                         preimage: None,
 627                         secret: None,
 628                         status: HTLCStatus::Pending,
 629                         amt_msat: MillisatAmount(Some(amt_msat)),
 630                 },
 631         );
 632 }
 633
 634 fn get_invoice(
 635         amt_msat: u64, payment_storage: PaymentInfoStorage, channel_manager: Arc<ChannelManager>,
 636         keys_manager: Arc<KeysManager>, network: Network,
 637 ) {
 638         let mut payments = payment_storage.lock().unwrap();
 639         let currency = match network {
 640                 Network::Bitcoin => Currency::Bitcoin,
 641                 Network::Testnet => Currency::BitcoinTestnet,
 642                 Network::Regtest => Currency::Regtest,
 643                 Network::Signet => panic!("Signet unsupported"),
 644         };
 645         let invoice = match utils::create_invoice_from_channelmanager(
 646                 &channel_manager,
 647                 keys_manager,
 648                 currency,
 649                 Some(amt_msat),
 650                 "ldk-tutorial-node".to_string(),
 651         ) {
 652                 Ok(inv) => {
 653                         println!("SUCCESS: generated invoice: {}", inv);
 654                         inv
 655                 }
 656                 Err(e) => {
 657                         println!("ERROR: failed to create invoice: {:?}", e);
 658                         return;
 659                 }
 660         };
 661
 662         let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
 663         payments.insert(
 664                 payment_hash,
 665                 PaymentInfo {
 666                         preimage: None,
 667                         secret: Some(invoice.payment_secret().clone()),
 668                         status: HTLCStatus::Pending,
 669                         amt_msat: MillisatAmount(Some(amt_msat)),
 670                 },
 671         );
 672 }
 673
 674 fn close_channel(channel_id: [u8; 32], channel_manager: Arc<ChannelManager>) {
 675         match channel_manager.close_channel(&channel_id) {
 676                 Ok(()) => println!("EVENT: initiating channel close"),
 677                 Err(e) => println!("ERROR: failed to close channel: {:?}", e),
 678         }
 679 }
 680
 681 fn force_close_channel(channel_id: [u8; 32], channel_manager: Arc<ChannelManager>) {
 682         match channel_manager.force_close_channel(&channel_id) {
 683                 Ok(()) => println!("EVENT: initiating channel force-close"),
 684                 Err(e) => println!("ERROR: failed to force-close channel: {:?}", e),
 685         }
 686 }
 687
 688 pub(crate) fn parse_peer_info(
 689         peer_pubkey_and_ip_addr: String,
 690 ) -> Result<(PublicKey, SocketAddr), std::io::Error> {
 691         let mut pubkey_and_addr = peer_pubkey_and_ip_addr.split("@");
 692         let pubkey = pubkey_and_addr.next();
 693         let peer_addr_str = pubkey_and_addr.next();
 694         if peer_addr_str.is_none() || peer_addr_str.is_none() {
 695                 return Err(std::io::Error::new(
 696                         std::io::ErrorKind::Other,
 697                         "ERROR: incorrectly formatted peer info. Should be formatted as: `pubkey@host:port`",
 698                 ));
 699         }
 700
 701         let peer_addr = peer_addr_str.unwrap().to_socket_addrs().map(|mut r| r.next());
 702         if peer_addr.is_err() || peer_addr.as_ref().unwrap().is_none() {
 703                 return Err(std::io::Error::new(
 704                         std::io::ErrorKind::Other,
 705                         "ERROR: couldn't parse pubkey@host:port into a socket address",
 706                 ));
 707         }
 708
 709         let pubkey = hex_utils::to_compressed_pubkey(pubkey.unwrap());
 710         if pubkey.is_none() {
 711                 return Err(std::io::Error::new(
 712                         std::io::ErrorKind::Other,
 713                         "ERROR: unable to parse given pubkey for node",
 714                 ));
 715         }
 716
 717         Ok((pubkey.unwrap(), peer_addr.unwrap().unwrap()))
 718 }