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

   1 use crate::disk;
   2 use crate::hex_utils;
   3 use crate::{
   4         ChannelManager, HTLCStatus, InvoicePayer, MillisatAmount, PaymentInfo, PaymentInfoStorage,
   5         PeerManager,
   6 };
   7 use bitcoin::hashes::sha256::Hash as Sha256;
   8 use bitcoin::hashes::Hash;
   9 use bitcoin::network::constants::Network;
  10 use bitcoin::secp256k1::key::PublicKey;
  11 use lightning::chain::keysinterface::{KeysInterface, KeysManager, Recipient};
  12 use lightning::ln::msgs::NetAddress;
  13 use lightning::ln::{PaymentHash, PaymentPreimage};
  14 use lightning::util::config::{ChannelConfig, ChannelHandshakeLimits, UserConfig};
  15 use lightning::util::events::EventHandler;
  16 use lightning_invoice::payment::PaymentError;
  17 use lightning_invoice::{utils, Currency, Invoice};
  18 use std::env;
  19 use std::io;
  20 use std::io::{BufRead, Write};
  21 use std::net::{IpAddr, SocketAddr, ToSocketAddrs};
  22 use std::ops::Deref;
  23 use std::path::Path;
  24 use std::str::FromStr;
  25 use std::sync::Arc;
  26 use std::time::Duration;
  27
  28 pub(crate) struct LdkUserInfo {
  29         pub(crate) bitcoind_rpc_username: String,
  30         pub(crate) bitcoind_rpc_password: String,
  31         pub(crate) bitcoind_rpc_port: u16,
  32         pub(crate) bitcoind_rpc_host: String,
  33         pub(crate) ldk_storage_dir_path: String,
  34         pub(crate) ldk_peer_listening_port: u16,
  35         pub(crate) ldk_announced_listen_addr: Vec<NetAddress>,
  36         pub(crate) ldk_announced_node_name: [u8; 32],
  37         pub(crate) network: Network,
  38 }
  39
  40 pub(crate) fn parse_startup_args() -> Result<LdkUserInfo, ()> {
  41         if env::args().len() < 3 {
  42                 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*]`");
  43                 return Err(());
  44         }
  45         let bitcoind_rpc_info = env::args().skip(1).next().unwrap();
  46         let bitcoind_rpc_info_parts: Vec<&str> = bitcoind_rpc_info.rsplitn(2, "@").collect();
  47         if bitcoind_rpc_info_parts.len() != 2 {
  48                 println!("ERROR: bad bitcoind RPC URL provided");
  49                 return Err(());
  50         }
  51         let rpc_user_and_password: Vec<&str> = bitcoind_rpc_info_parts[1].split(":").collect();
  52         if rpc_user_and_password.len() != 2 {
  53                 println!("ERROR: bad bitcoind RPC username/password combo provided");
  54                 return Err(());
  55         }
  56         let bitcoind_rpc_username = rpc_user_and_password[0].to_string();
  57         let bitcoind_rpc_password = rpc_user_and_password[1].to_string();
  58         let bitcoind_rpc_path: Vec<&str> = bitcoind_rpc_info_parts[0].split(":").collect();
  59         if bitcoind_rpc_path.len() != 2 {
  60                 println!("ERROR: bad bitcoind RPC path provided");
  61                 return Err(());
  62         }
  63         let bitcoind_rpc_host = bitcoind_rpc_path[0].to_string();
  64         let bitcoind_rpc_port = bitcoind_rpc_path[1].parse::<u16>().unwrap();
  65
  66         let ldk_storage_dir_path = env::args().skip(2).next().unwrap();
  67
  68         let mut ldk_peer_port_set = true;
  69         let ldk_peer_listening_port: u16 = match env::args().skip(3).next().map(|p| p.parse()) {
  70                 Some(Ok(p)) => p,
  71                 Some(Err(_)) => {
  72                         ldk_peer_port_set = false;
  73                         9735
  74                 }
  75                 None => {
  76                         ldk_peer_port_set = false;
  77                         9735
  78                 }
  79         };
  80
  81         let mut 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("signet") => Network::Signet,
  89                 Some(net) => {
  90                         panic!("Unsupported network provided. Options are: `regtest`, `testnet`, and `signet`. Got {}", net);
  91                 }
  92                 None => Network::Testnet,
  93         };
  94
  95         let ldk_announced_node_name = match env::args().skip(arg_idx + 1).next().as_ref() {
  96                 Some(s) => {
  97                         if s.len() > 32 {
  98                                 panic!("Node Alias can not be longer than 32 bytes");
  99                         }
 100                         arg_idx += 1;
 101                         let mut bytes = [0; 32];
 102                         bytes[..s.len()].copy_from_slice(s.as_bytes());
 103                         bytes
 104                 }
 105                 None => [0; 32],
 106         };
 107
 108         let mut ldk_announced_listen_addr = Vec::new();
 109         loop {
 110                 match env::args().skip(arg_idx + 1).next().as_ref() {
 111                         Some(s) => match IpAddr::from_str(s) {
 112                                 Ok(IpAddr::V4(a)) => {
 113                                         ldk_announced_listen_addr
 114                                                 .push(NetAddress::IPv4 { addr: a.octets(), port: ldk_peer_listening_port });
 115                                         arg_idx += 1;
 116                                 }
 117                                 Ok(IpAddr::V6(a)) => {
 118                                         ldk_announced_listen_addr
 119                                                 .push(NetAddress::IPv6 { addr: a.octets(), port: ldk_peer_listening_port });
 120                                         arg_idx += 1;
 121                                 }
 122                                 Err(_) => panic!("Failed to parse announced-listen-addr into an IP address"),
 123                         },
 124                         None => break,
 125                 }
 126         }
 127
 128         Ok(LdkUserInfo {
 129                 bitcoind_rpc_username,
 130                 bitcoind_rpc_password,
 131                 bitcoind_rpc_host,
 132                 bitcoind_rpc_port,
 133                 ldk_storage_dir_path,
 134                 ldk_peer_listening_port,
 135                 ldk_announced_listen_addr,
 136                 ldk_announced_node_name,
 137                 network,
 138         })
 139 }
 140
 141 pub(crate) async fn poll_for_user_input<E: EventHandler>(
 142         invoice_payer: Arc<InvoicePayer<E>>, peer_manager: Arc<PeerManager>,
 143         channel_manager: Arc<ChannelManager>, keys_manager: Arc<KeysManager>,
 144         inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage,
 145         ldk_data_dir: String, network: Network,
 146 ) {
 147         println!("LDK startup successful. To view available commands: \"help\".");
 148         println!("LDK logs are available at <your-supplied-ldk-data-dir-path>/.ldk/logs");
 149         println!("Local Node ID is {}.", channel_manager.get_our_node_id());
 150         let stdin = io::stdin();
 151         let mut line_reader = stdin.lock().lines();
 152         loop {
 153                 print!("> ");
 154                 io::stdout().flush().unwrap(); // Without flushing, the `>` doesn't print
 155                 let line = match line_reader.next() {
 156                         Some(l) => l.unwrap(),
 157                         None => break,
 158                 };
 159                 let mut words = line.split_whitespace();
 160                 if let Some(word) = words.next() {
 161                         match word {
 162                                 "help" => help(),
 163                                 "openchannel" => {
 164                                         let peer_pubkey_and_ip_addr = words.next();
 165                                         let channel_value_sat = words.next();
 166                                         if peer_pubkey_and_ip_addr.is_none() || channel_value_sat.is_none() {
 167                                                 println!("ERROR: openchannel has 2 required arguments: `openchannel pubkey@host:port channel_amt_satoshis` [--public]");
 168                                                 continue;
 169                                         }
 170                                         let peer_pubkey_and_ip_addr = peer_pubkey_and_ip_addr.unwrap();
 171                                         let (pubkey, peer_addr) =
 172                                                 match parse_peer_info(peer_pubkey_and_ip_addr.to_string()) {
 173                                                         Ok(info) => info,
 174                                                         Err(e) => {
 175                                                                 println!("{:?}", e.into_inner().unwrap());
 176                                                                 continue;
 177                                                         }
 178                                                 };
 179
 180                                         let chan_amt_sat: Result<u64, _> = channel_value_sat.unwrap().parse();
 181                                         if chan_amt_sat.is_err() {
 182                                                 println!("ERROR: channel amount must be a number");
 183                                                 continue;
 184                                         }
 185
 186                                         if connect_peer_if_necessary(pubkey, peer_addr, peer_manager.clone())
 187                                                 .await
 188                                                 .is_err()
 189                                         {
 190                                                 continue;
 191                                         };
 192
 193                                         let announce_channel = match words.next() {
 194                                                 Some("--public") | Some("--public=true") => true,
 195                                                 Some("--public=false") => false,
 196                                                 Some(_) => {
 197                                                         println!("ERROR: invalid `--public` command format. Valid formats: `--public`, `--public=true` `--public=false`");
 198                                                         continue;
 199                                                 }
 200                                                 None => false,
 201                                         };
 202
 203                                         if open_channel(
 204                                                 pubkey,
 205                                                 chan_amt_sat.unwrap(),
 206                                                 announce_channel,
 207                                                 channel_manager.clone(),
 208                                         )
 209                                         .is_ok()
 210                                         {
 211                                                 let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone());
 212                                                 let _ = disk::persist_channel_peer(
 213                                                         Path::new(&peer_data_path),
 214                                                         peer_pubkey_and_ip_addr,
 215                                                 );
 216                                         }
 217                                 }
 218                                 "sendpayment" => {
 219                                         let invoice_str = words.next();
 220                                         if invoice_str.is_none() {
 221                                                 println!("ERROR: sendpayment requires an invoice: `sendpayment <invoice>`");
 222                                                 continue;
 223                                         }
 224
 225                                         let invoice = match Invoice::from_str(invoice_str.unwrap()) {
 226                                                 Ok(inv) => inv,
 227                                                 Err(e) => {
 228                                                         println!("ERROR: invalid invoice: {:?}", e);
 229                                                         continue;
 230                                                 }
 231                                         };
 232
 233                                         send_payment(&*invoice_payer, &invoice, outbound_payments.clone());
 234                                 }
 235                                 "keysend" => {
 236                                         let dest_pubkey = match words.next() {
 237                                                 Some(dest) => match hex_utils::to_compressed_pubkey(dest) {
 238                                                         Some(pk) => pk,
 239                                                         None => {
 240                                                                 println!("ERROR: couldn't parse destination pubkey");
 241                                                                 continue;
 242                                                         }
 243                                                 },
 244                                                 None => {
 245                                                         println!("ERROR: keysend requires a destination pubkey: `keysend <dest_pubkey> <amt_msat>`");
 246                                                         continue;
 247                                                 }
 248                                         };
 249                                         let amt_msat_str = match words.next() {
 250                                                 Some(amt) => amt,
 251                                                 None => {
 252                                                         println!("ERROR: keysend requires an amount in millisatoshis: `keysend <dest_pubkey> <amt_msat>`");
 253                                                         continue;
 254                                                 }
 255                                         };
 256                                         let amt_msat: u64 = match amt_msat_str.parse() {
 257                                                 Ok(amt) => amt,
 258                                                 Err(e) => {
 259                                                         println!("ERROR: couldn't parse amount_msat: {}", e);
 260                                                         continue;
 261                                                 }
 262                                         };
 263                                         keysend(
 264                                                 &*invoice_payer,
 265                                                 dest_pubkey,
 266                                                 amt_msat,
 267                                                 &*keys_manager,
 268                                                 outbound_payments.clone(),
 269                                         );
 270                                 }
 271                                 "getinvoice" => {
 272                                         let amt_str = words.next();
 273                                         if amt_str.is_none() {
 274                                                 println!("ERROR: getinvoice requires an amount in millisatoshis");
 275                                                 continue;
 276                                         }
 277
 278                                         let amt_msat: Result<u64, _> = amt_str.unwrap().parse();
 279                                         if amt_msat.is_err() {
 280                                                 println!("ERROR: getinvoice provided payment amount was not a number");
 281                                                 continue;
 282                                         }
 283                                         get_invoice(
 284                                                 amt_msat.unwrap(),
 285                                                 inbound_payments.clone(),
 286                                                 channel_manager.clone(),
 287                                                 keys_manager.clone(),
 288                                                 network,
 289                                         );
 290                                 }
 291                                 "connectpeer" => {
 292                                         let peer_pubkey_and_ip_addr = words.next();
 293                                         if peer_pubkey_and_ip_addr.is_none() {
 294                                                 println!("ERROR: connectpeer requires peer connection info: `connectpeer pubkey@host:port`");
 295                                                 continue;
 296                                         }
 297                                         let (pubkey, peer_addr) =
 298                                                 match parse_peer_info(peer_pubkey_and_ip_addr.unwrap().to_string()) {
 299                                                         Ok(info) => info,
 300                                                         Err(e) => {
 301                                                                 println!("{:?}", e.into_inner().unwrap());
 302                                                                 continue;
 303                                                         }
 304                                                 };
 305                                         if connect_peer_if_necessary(pubkey, peer_addr, peer_manager.clone())
 306                                                 .await
 307                                                 .is_ok()
 308                                         {
 309                                                 println!("SUCCESS: connected to peer {}", pubkey);
 310                                         }
 311                                 }
 312                                 "listchannels" => list_channels(&channel_manager),
 313                                 "listpayments" => {
 314                                         list_payments(inbound_payments.clone(), outbound_payments.clone())
 315                                 }
 316                                 "closechannel" => {
 317                                         let channel_id_str = words.next();
 318                                         if channel_id_str.is_none() {
 319                                                 println!("ERROR: closechannel requires a channel ID: `closechannel <channel_id>`");
 320                                                 continue;
 321                                         }
 322                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 323                                         if channel_id_vec.is_none() || channel_id_vec.as_ref().unwrap().len() != 32 {
 324                                                 println!("ERROR: couldn't parse channel_id");
 325                                                 continue;
 326                                         }
 327                                         let mut channel_id = [0; 32];
 328                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 329                                         close_channel(channel_id, channel_manager.clone());
 330                                 }
 331                                 "forceclosechannel" => {
 332                                         let channel_id_str = words.next();
 333                                         if channel_id_str.is_none() {
 334                                                 println!("ERROR: forceclosechannel requires a channel ID: `forceclosechannel <channel_id>`");
 335                                                 continue;
 336                                         }
 337                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 338                                         if channel_id_vec.is_none() || channel_id_vec.as_ref().unwrap().len() != 32 {
 339                                                 println!("ERROR: couldn't parse channel_id");
 340                                                 continue;
 341                                         }
 342                                         let mut channel_id = [0; 32];
 343                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 344                                         force_close_channel(channel_id, channel_manager.clone());
 345                                 }
 346                                 "nodeinfo" => node_info(&channel_manager, &peer_manager),
 347                                 "listpeers" => list_peers(peer_manager.clone()),
 348                                 "signmessage" => {
 349                                         const MSG_STARTPOS: usize = "signmessage".len() + 1;
 350                                         if line.as_bytes().len() <= MSG_STARTPOS {
 351                                                 println!("ERROR: signmsg requires a message");
 352                                                 continue;
 353                                         }
 354                                         println!(
 355                                                 "{:?}",
 356                                                 lightning::util::message_signing::sign(
 357                                                         &line.as_bytes()[MSG_STARTPOS..],
 358                                                         &keys_manager.get_node_secret(Recipient::Node).unwrap()
 359                                                 )
 360                                         );
 361                                 }
 362                                 _ => println!("Unknown command. See `\"help\" for available commands."),
 363                         }
 364                 }
 365         }
 366 }
 367
 368 fn help() {
 369         println!("openchannel pubkey@host:port <amt_satoshis>");
 370         println!("sendpayment <invoice>");
 371         println!("getinvoice <amt_millisatoshis>");
 372         println!("connectpeer pubkey@host:port");
 373         println!("listchannels");
 374         println!("listpayments");
 375         println!("closechannel <channel_id>");
 376         println!("forceclosechannel <channel_id>");
 377         println!("nodeinfo");
 378         println!("listpeers");
 379         println!("signmessage <message>");
 380 }
 381
 382 fn node_info(channel_manager: &Arc<ChannelManager>, peer_manager: &Arc<PeerManager>) {
 383         println!("\t{{");
 384         println!("\t\t node_pubkey: {}", channel_manager.get_our_node_id());
 385         let chans = channel_manager.list_channels();
 386         println!("\t\t num_channels: {}", chans.len());
 387         println!("\t\t num_usable_channels: {}", chans.iter().filter(|c| c.is_usable).count());
 388         let local_balance_msat = chans.iter().map(|c| c.balance_msat).sum::<u64>();
 389         println!("\t\t local_balance_msat: {}", local_balance_msat);
 390         println!("\t\t num_peers: {}", peer_manager.get_peer_node_ids().len());
 391         println!("\t}},");
 392 }
 393
 394 fn list_peers(peer_manager: Arc<PeerManager>) {
 395         println!("\t{{");
 396         for pubkey in peer_manager.get_peer_node_ids() {
 397                 println!("\t\t pubkey: {}", pubkey);
 398         }
 399         println!("\t}},");
 400 }
 401
 402 fn list_channels(channel_manager: &Arc<ChannelManager>) {
 403         print!("[");
 404         for chan_info in channel_manager.list_channels() {
 405                 println!("");
 406                 println!("\t{{");
 407                 println!("\t\tchannel_id: {},", hex_utils::hex_str(&chan_info.channel_id[..]));
 408                 if let Some(funding_txo) = chan_info.funding_txo {
 409                         println!("\t\tfunding_txid: {},", funding_txo.txid);
 410                 }
 411                 println!(
 412                         "\t\tpeer_pubkey: {},",
 413                         hex_utils::hex_str(&chan_info.counterparty.node_id.serialize())
 414                 );
 415                 if let Some(id) = chan_info.short_channel_id {
 416                         println!("\t\tshort_channel_id: {},", id);
 417                 }
 418                 println!("\t\tis_confirmed_onchain: {},", chan_info.is_funding_locked);
 419                 println!("\t\tchannel_value_satoshis: {},", chan_info.channel_value_satoshis);
 420                 println!("\t\tlocal_balance_msat: {},", chan_info.balance_msat);
 421                 if chan_info.is_usable {
 422                         println!("\t\tavailable_balance_for_send_msat: {},", chan_info.outbound_capacity_msat);
 423                         println!("\t\tavailable_balance_for_recv_msat: {},", chan_info.inbound_capacity_msat);
 424                 }
 425                 println!("\t\tchannel_can_send_payments: {},", chan_info.is_usable);
 426                 println!("\t\tpublic: {},", chan_info.is_public);
 427                 println!("\t}},");
 428         }
 429         println!("]");
 430 }
 431
 432 fn list_payments(inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage) {
 433         let inbound = inbound_payments.lock().unwrap();
 434         let outbound = outbound_payments.lock().unwrap();
 435         print!("[");
 436         for (payment_hash, payment_info) in inbound.deref() {
 437                 println!("");
 438                 println!("\t{{");
 439                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 440                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 441                 println!("\t\thtlc_direction: inbound,");
 442                 println!(
 443                         "\t\thtlc_status: {},",
 444                         match payment_info.status {
 445                                 HTLCStatus::Pending => "pending",
 446                                 HTLCStatus::Succeeded => "succeeded",
 447                                 HTLCStatus::Failed => "failed",
 448                         }
 449                 );
 450
 451                 println!("\t}},");
 452         }
 453
 454         for (payment_hash, payment_info) in outbound.deref() {
 455                 println!("");
 456                 println!("\t{{");
 457                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 458                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 459                 println!("\t\thtlc_direction: outbound,");
 460                 println!(
 461                         "\t\thtlc_status: {},",
 462                         match payment_info.status {
 463                                 HTLCStatus::Pending => "pending",
 464                                 HTLCStatus::Succeeded => "succeeded",
 465                                 HTLCStatus::Failed => "failed",
 466                         }
 467                 );
 468
 469                 println!("\t}},");
 470         }
 471         println!("]");
 472 }
 473
 474 pub(crate) async fn connect_peer_if_necessary(
 475         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 476 ) -> Result<(), ()> {
 477         for node_pubkey in peer_manager.get_peer_node_ids() {
 478                 if node_pubkey == pubkey {
 479                         return Ok(());
 480                 }
 481         }
 482         let res = do_connect_peer(pubkey, peer_addr, peer_manager).await;
 483         if res.is_err() {
 484                 println!("ERROR: failed to connect to peer");
 485         }
 486         res
 487 }
 488
 489 pub(crate) async fn do_connect_peer(
 490         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 491 ) -> Result<(), ()> {
 492         match lightning_net_tokio::connect_outbound(Arc::clone(&peer_manager), pubkey, peer_addr).await
 493         {
 494                 Some(connection_closed_future) => {
 495                         let mut connection_closed_future = Box::pin(connection_closed_future);
 496                         loop {
 497                                 match futures::poll!(&mut connection_closed_future) {
 498                                         std::task::Poll::Ready(_) => {
 499                                                 return Err(());
 500                                         }
 501                                         std::task::Poll::Pending => {}
 502                                 }
 503                                 // Avoid blocking the tokio context by sleeping a bit
 504                                 match peer_manager.get_peer_node_ids().iter().find(|id| **id == pubkey) {
 505                                         Some(_) => return Ok(()),
 506                                         None => tokio::time::sleep(Duration::from_millis(10)).await,
 507                                 }
 508                         }
 509                 }
 510                 None => Err(()),
 511         }
 512 }
 513
 514 fn open_channel(
 515         peer_pubkey: PublicKey, channel_amt_sat: u64, announced_channel: bool,
 516         channel_manager: Arc<ChannelManager>,
 517 ) -> Result<(), ()> {
 518         let config = UserConfig {
 519                 peer_channel_config_limits: ChannelHandshakeLimits {
 520                         // lnd's max to_self_delay is 2016, so we want to be compatible.
 521                         their_to_self_delay: 2016,
 522                         ..Default::default()
 523                 },
 524                 channel_options: ChannelConfig { announced_channel, ..Default::default() },
 525                 ..Default::default()
 526         };
 527
 528         match channel_manager.create_channel(peer_pubkey, channel_amt_sat, 0, 0, Some(config)) {
 529                 Ok(_) => {
 530                         println!("EVENT: initiated channel with peer {}. ", peer_pubkey);
 531                         return Ok(());
 532                 }
 533                 Err(e) => {
 534                         println!("ERROR: failed to open channel: {:?}", e);
 535                         return Err(());
 536                 }
 537         }
 538 }
 539
 540 fn send_payment<E: EventHandler>(
 541         invoice_payer: &InvoicePayer<E>, invoice: &Invoice, payment_storage: PaymentInfoStorage,
 542 ) {
 543         let status = match invoice_payer.pay_invoice(invoice) {
 544                 Ok(_payment_id) => {
 545                         let payee_pubkey = invoice.recover_payee_pub_key();
 546                         let amt_msat = invoice.amount_milli_satoshis().unwrap();
 547                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee_pubkey);
 548                         print!("> ");
 549                         HTLCStatus::Pending
 550                 }
 551                 Err(PaymentError::Invoice(e)) => {
 552                         println!("ERROR: invalid invoice: {}", e);
 553                         print!("> ");
 554                         return;
 555                 }
 556                 Err(PaymentError::Routing(e)) => {
 557                         println!("ERROR: failed to find route: {}", e.err);
 558                         print!("> ");
 559                         return;
 560                 }
 561                 Err(PaymentError::Sending(e)) => {
 562                         println!("ERROR: failed to send payment: {:?}", e);
 563                         print!("> ");
 564                         HTLCStatus::Failed
 565                 }
 566         };
 567         let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
 568         let payment_secret = Some(invoice.payment_secret().clone());
 569
 570         let mut payments = payment_storage.lock().unwrap();
 571         payments.insert(
 572                 payment_hash,
 573                 PaymentInfo {
 574                         preimage: None,
 575                         secret: payment_secret,
 576                         status,
 577                         amt_msat: MillisatAmount(invoice.amount_milli_satoshis()),
 578                 },
 579         );
 580 }
 581
 582 fn keysend<E: EventHandler, K: KeysInterface>(
 583         invoice_payer: &InvoicePayer<E>, payee_pubkey: PublicKey, amt_msat: u64, keys: &K,
 584         payment_storage: PaymentInfoStorage,
 585 ) {
 586         let payment_preimage = keys.get_secure_random_bytes();
 587
 588         let status = match invoice_payer.pay_pubkey(
 589                 payee_pubkey,
 590                 PaymentPreimage(payment_preimage),
 591                 amt_msat,
 592                 40,
 593         ) {
 594                 Ok(_payment_id) => {
 595                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee_pubkey);
 596                         print!("> ");
 597                         HTLCStatus::Pending
 598                 }
 599                 Err(PaymentError::Invoice(e)) => {
 600                         println!("ERROR: invalid payee: {}", e);
 601                         print!("> ");
 602                         return;
 603                 }
 604                 Err(PaymentError::Routing(e)) => {
 605                         println!("ERROR: failed to find route: {}", e.err);
 606                         print!("> ");
 607                         return;
 608                 }
 609                 Err(PaymentError::Sending(e)) => {
 610                         println!("ERROR: failed to send payment: {:?}", e);
 611                         print!("> ");
 612                         HTLCStatus::Failed
 613                 }
 614         };
 615
 616         let mut payments = payment_storage.lock().unwrap();
 617         payments.insert(
 618                 PaymentHash(Sha256::hash(&payment_preimage).into_inner()),
 619                 PaymentInfo {
 620                         preimage: None,
 621                         secret: None,
 622                         status,
 623                         amt_msat: MillisatAmount(Some(amt_msat)),
 624                 },
 625         );
 626 }
 627
 628 fn get_invoice(
 629         amt_msat: u64, payment_storage: PaymentInfoStorage, channel_manager: Arc<ChannelManager>,
 630         keys_manager: Arc<KeysManager>, network: Network,
 631 ) {
 632         let mut payments = payment_storage.lock().unwrap();
 633         let currency = match network {
 634                 Network::Bitcoin => Currency::Bitcoin,
 635                 Network::Testnet => Currency::BitcoinTestnet,
 636                 Network::Regtest => Currency::Regtest,
 637                 Network::Signet => Currency::Signet,
 638         };
 639         let invoice = match utils::create_invoice_from_channelmanager(
 640                 &channel_manager,
 641                 keys_manager,
 642                 currency,
 643                 Some(amt_msat),
 644                 "ldk-tutorial-node".to_string(),
 645         ) {
 646                 Ok(inv) => {
 647                         println!("SUCCESS: generated invoice: {}", inv);
 648                         inv
 649                 }
 650                 Err(e) => {
 651                         println!("ERROR: failed to create invoice: {:?}", e);
 652                         return;
 653                 }
 654         };
 655
 656         let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
 657         payments.insert(
 658                 payment_hash,
 659                 PaymentInfo {
 660                         preimage: None,
 661                         secret: Some(invoice.payment_secret().clone()),
 662                         status: HTLCStatus::Pending,
 663                         amt_msat: MillisatAmount(Some(amt_msat)),
 664                 },
 665         );
 666 }
 667
 668 fn close_channel(channel_id: [u8; 32], channel_manager: Arc<ChannelManager>) {
 669         match channel_manager.close_channel(&channel_id) {
 670                 Ok(()) => println!("EVENT: initiating channel close"),
 671                 Err(e) => println!("ERROR: failed to close channel: {:?}", e),
 672         }
 673 }
 674
 675 fn force_close_channel(channel_id: [u8; 32], channel_manager: Arc<ChannelManager>) {
 676         match channel_manager.force_close_channel(&channel_id) {
 677                 Ok(()) => println!("EVENT: initiating channel force-close"),
 678                 Err(e) => println!("ERROR: failed to force-close channel: {:?}", e),
 679         }
 680 }
 681
 682 pub(crate) fn parse_peer_info(
 683         peer_pubkey_and_ip_addr: String,
 684 ) -> Result<(PublicKey, SocketAddr), std::io::Error> {
 685         let mut pubkey_and_addr = peer_pubkey_and_ip_addr.split("@");
 686         let pubkey = pubkey_and_addr.next();
 687         let peer_addr_str = pubkey_and_addr.next();
 688         if peer_addr_str.is_none() || peer_addr_str.is_none() {
 689                 return Err(std::io::Error::new(
 690                         std::io::ErrorKind::Other,
 691                         "ERROR: incorrectly formatted peer info. Should be formatted as: `pubkey@host:port`",
 692                 ));
 693         }
 694
 695         let peer_addr = peer_addr_str.unwrap().to_socket_addrs().map(|mut r| r.next());
 696         if peer_addr.is_err() || peer_addr.as_ref().unwrap().is_none() {
 697                 return Err(std::io::Error::new(
 698                         std::io::ErrorKind::Other,
 699                         "ERROR: couldn't parse pubkey@host:port into a socket address",
 700                 ));
 701         }
 702
 703         let pubkey = hex_utils::to_compressed_pubkey(pubkey.unwrap());
 704         if pubkey.is_none() {
 705                 return Err(std::io::Error::new(
 706                         std::io::ErrorKind::Other,
 707                         "ERROR: unable to parse given pubkey for node",
 708                 ));
 709         }
 710
 711         Ok((pubkey.unwrap(), peer_addr.unwrap().unwrap()))
 712 }