_ 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};
  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(net) => {
  89                         panic!("Unsupported network provided. Options are: `regtest`, `testnet`. Got {}", net);
  90                 }
  91                 None => Network::Testnet,
  92         };
  93
  94         let ldk_announced_node_name = match env::args().skip(arg_idx + 1).next().as_ref() {
  95                 Some(s) => {
  96                         if s.len() > 32 {
  97                                 panic!("Node Alias can not be longer than 32 bytes");
  98                         }
  99                         arg_idx += 1;
 100                         let mut bytes = [0; 32];
 101                         bytes[..s.len()].copy_from_slice(s.as_bytes());
 102                         bytes
 103                 }
 104                 None => [0; 32],
 105         };
 106
 107         let mut ldk_announced_listen_addr = Vec::new();
 108         loop {
 109                 match env::args().skip(arg_idx + 1).next().as_ref() {
 110                         Some(s) => match IpAddr::from_str(s) {
 111                                 Ok(IpAddr::V4(a)) => {
 112                                         ldk_announced_listen_addr
 113                                                 .push(NetAddress::IPv4 { addr: a.octets(), port: ldk_peer_listening_port });
 114                                         arg_idx += 1;
 115                                 }
 116                                 Ok(IpAddr::V6(a)) => {
 117                                         ldk_announced_listen_addr
 118                                                 .push(NetAddress::IPv6 { addr: a.octets(), port: ldk_peer_listening_port });
 119                                         arg_idx += 1;
 120                                 }
 121                                 Err(_) => panic!("Failed to parse announced-listen-addr into an IP address"),
 122                         },
 123                         None => break,
 124                 }
 125         }
 126
 127         Ok(LdkUserInfo {
 128                 bitcoind_rpc_username,
 129                 bitcoind_rpc_password,
 130                 bitcoind_rpc_host,
 131                 bitcoind_rpc_port,
 132                 ldk_storage_dir_path,
 133                 ldk_peer_listening_port,
 134                 ldk_announced_listen_addr,
 135                 ldk_announced_node_name,
 136                 network,
 137         })
 138 }
 139
 140 pub(crate) async fn poll_for_user_input<E: EventHandler>(
 141         invoice_payer: Arc<InvoicePayer<E>>, peer_manager: Arc<PeerManager>,
 142         channel_manager: Arc<ChannelManager>, keys_manager: Arc<KeysManager>,
 143         inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage,
 144         ldk_data_dir: String, network: Network,
 145 ) {
 146         println!("LDK startup successful. To view available commands: \"help\".");
 147         println!("LDK logs are available at <your-supplied-ldk-data-dir-path>/.ldk/logs");
 148         println!("Local Node ID is {}.", channel_manager.get_our_node_id());
 149         let stdin = io::stdin();
 150         let mut line_reader = stdin.lock().lines();
 151         loop {
 152                 print!("> ");
 153                 io::stdout().flush().unwrap(); // Without flushing, the `>` doesn't print
 154                 let line = match line_reader.next() {
 155                         Some(l) => l.unwrap(),
 156                         None => break,
 157                 };
 158                 let mut words = line.split_whitespace();
 159                 if let Some(word) = words.next() {
 160                         match word {
 161                                 "help" => help(),
 162                                 "openchannel" => {
 163                                         let peer_pubkey_and_ip_addr = words.next();
 164                                         let channel_value_sat = words.next();
 165                                         if peer_pubkey_and_ip_addr.is_none() || channel_value_sat.is_none() {
 166                                                 println!("ERROR: openchannel has 2 required arguments: `openchannel pubkey@host:port channel_amt_satoshis` [--public]");
 167                                                 continue;
 168                                         }
 169                                         let peer_pubkey_and_ip_addr = peer_pubkey_and_ip_addr.unwrap();
 170                                         let (pubkey, peer_addr) =
 171                                                 match parse_peer_info(peer_pubkey_and_ip_addr.to_string()) {
 172                                                         Ok(info) => info,
 173                                                         Err(e) => {
 174                                                                 println!("{:?}", e.into_inner().unwrap());
 175                                                                 continue;
 176                                                         }
 177                                                 };
 178
 179                                         let chan_amt_sat: Result<u64, _> = channel_value_sat.unwrap().parse();
 180                                         if chan_amt_sat.is_err() {
 181                                                 println!("ERROR: channel amount must be a number");
 182                                                 continue;
 183                                         }
 184
 185                                         if connect_peer_if_necessary(pubkey, peer_addr, peer_manager.clone())
 186                                                 .await
 187                                                 .is_err()
 188                                         {
 189                                                 continue;
 190                                         };
 191
 192                                         let announce_channel = match words.next() {
 193                                                 Some("--public") | Some("--public=true") => true,
 194                                                 Some("--public=false") => false,
 195                                                 Some(_) => {
 196                                                         println!("ERROR: invalid `--public` command format. Valid formats: `--public`, `--public=true` `--public=false`");
 197                                                         continue;
 198                                                 }
 199                                                 None => false,
 200                                         };
 201
 202                                         if open_channel(
 203                                                 pubkey,
 204                                                 chan_amt_sat.unwrap(),
 205                                                 announce_channel,
 206                                                 channel_manager.clone(),
 207                                         )
 208                                         .is_ok()
 209                                         {
 210                                                 let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone());
 211                                                 let _ = disk::persist_channel_peer(
 212                                                         Path::new(&peer_data_path),
 213                                                         peer_pubkey_and_ip_addr,
 214                                                 );
 215                                         }
 216                                 }
 217                                 "sendpayment" => {
 218                                         let invoice_str = words.next();
 219                                         if invoice_str.is_none() {
 220                                                 println!("ERROR: sendpayment requires an invoice: `sendpayment <invoice>`");
 221                                                 continue;
 222                                         }
 223
 224                                         let invoice = match Invoice::from_str(invoice_str.unwrap()) {
 225                                                 Ok(inv) => inv,
 226                                                 Err(e) => {
 227                                                         println!("ERROR: invalid invoice: {:?}", e);
 228                                                         continue;
 229                                                 }
 230                                         };
 231
 232                                         send_payment(&*invoice_payer, &invoice, outbound_payments.clone());
 233                                 }
 234                                 "keysend" => {
 235                                         let dest_pubkey = match words.next() {
 236                                                 Some(dest) => match hex_utils::to_compressed_pubkey(dest) {
 237                                                         Some(pk) => pk,
 238                                                         None => {
 239                                                                 println!("ERROR: couldn't parse destination pubkey");
 240                                                                 continue;
 241                                                         }
 242                                                 },
 243                                                 None => {
 244                                                         println!("ERROR: keysend requires a destination pubkey: `keysend <dest_pubkey> <amt_msat>`");
 245                                                         continue;
 246                                                 }
 247                                         };
 248                                         let amt_msat_str = match words.next() {
 249                                                 Some(amt) => amt,
 250                                                 None => {
 251                                                         println!("ERROR: keysend requires an amount in millisatoshis: `keysend <dest_pubkey> <amt_msat>`");
 252                                                         continue;
 253                                                 }
 254                                         };
 255                                         let amt_msat: u64 = match amt_msat_str.parse() {
 256                                                 Ok(amt) => amt,
 257                                                 Err(e) => {
 258                                                         println!("ERROR: couldn't parse amount_msat: {}", e);
 259                                                         continue;
 260                                                 }
 261                                         };
 262                                         keysend(
 263                                                 &*invoice_payer,
 264                                                 dest_pubkey,
 265                                                 amt_msat,
 266                                                 &*keys_manager,
 267                                                 outbound_payments.clone(),
 268                                         );
 269                                 }
 270                                 "getinvoice" => {
 271                                         let amt_str = words.next();
 272                                         if amt_str.is_none() {
 273                                                 println!("ERROR: getinvoice requires an amount in millisatoshis");
 274                                                 continue;
 275                                         }
 276
 277                                         let amt_msat: Result<u64, _> = amt_str.unwrap().parse();
 278                                         if amt_msat.is_err() {
 279                                                 println!("ERROR: getinvoice provided payment amount was not a number");
 280                                                 continue;
 281                                         }
 282                                         get_invoice(
 283                                                 amt_msat.unwrap(),
 284                                                 inbound_payments.clone(),
 285                                                 channel_manager.clone(),
 286                                                 keys_manager.clone(),
 287                                                 network,
 288                                         );
 289                                 }
 290                                 "connectpeer" => {
 291                                         let peer_pubkey_and_ip_addr = words.next();
 292                                         if peer_pubkey_and_ip_addr.is_none() {
 293                                                 println!("ERROR: connectpeer requires peer connection info: `connectpeer pubkey@host:port`");
 294                                                 continue;
 295                                         }
 296                                         let (pubkey, peer_addr) =
 297                                                 match parse_peer_info(peer_pubkey_and_ip_addr.unwrap().to_string()) {
 298                                                         Ok(info) => info,
 299                                                         Err(e) => {
 300                                                                 println!("{:?}", e.into_inner().unwrap());
 301                                                                 continue;
 302                                                         }
 303                                                 };
 304                                         if connect_peer_if_necessary(pubkey, peer_addr, peer_manager.clone())
 305                                                 .await
 306                                                 .is_ok()
 307                                         {
 308                                                 println!("SUCCESS: connected to peer {}", pubkey);
 309                                         }
 310                                 }
 311                                 "listchannels" => list_channels(channel_manager.clone()),
 312                                 "listpayments" => {
 313                                         list_payments(inbound_payments.clone(), outbound_payments.clone())
 314                                 }
 315                                 "closechannel" => {
 316                                         let channel_id_str = words.next();
 317                                         if channel_id_str.is_none() {
 318                                                 println!("ERROR: closechannel requires a channel ID: `closechannel <channel_id>`");
 319                                                 continue;
 320                                         }
 321                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 322                                         if channel_id_vec.is_none() {
 323                                                 println!("ERROR: couldn't parse channel_id as hex");
 324                                                 continue;
 325                                         }
 326                                         let mut channel_id = [0; 32];
 327                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 328                                         close_channel(channel_id, channel_manager.clone());
 329                                 }
 330                                 "forceclosechannel" => {
 331                                         let channel_id_str = words.next();
 332                                         if channel_id_str.is_none() {
 333                                                 println!("ERROR: forceclosechannel requires a channel ID: `forceclosechannel <channel_id>`");
 334                                                 continue;
 335                                         }
 336                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 337                                         if channel_id_vec.is_none() {
 338                                                 println!("ERROR: couldn't parse channel_id as hex");
 339                                                 continue;
 340                                         }
 341                                         let mut channel_id = [0; 32];
 342                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 343                                         force_close_channel(channel_id, channel_manager.clone());
 344                                 }
 345                                 "nodeinfo" => node_info(channel_manager.clone(), peer_manager.clone()),
 346                                 "listpeers" => list_peers(peer_manager.clone()),
 347                                 "signmessage" => {
 348                                         const MSG_STARTPOS: usize = "signmessage".len() + 1;
 349                                         if line.as_bytes().len() <= MSG_STARTPOS {
 350                                                 println!("ERROR: signmsg requires a message");
 351                                                 continue;
 352                                         }
 353                                         println!(
 354                                                 "{:?}",
 355                                                 lightning::util::message_signing::sign(
 356                                                         &line.as_bytes()[MSG_STARTPOS..],
 357                                                         &keys_manager.get_node_secret()
 358                                                 )
 359                                         );
 360                                 }
 361                                 _ => println!("Unknown command. See `\"help\" for available commands."),
 362                         }
 363                 }
 364         }
 365 }
 366
 367 fn help() {
 368         println!("openchannel pubkey@host:port <amt_satoshis>");
 369         println!("sendpayment <invoice>");
 370         println!("getinvoice <amt_millisatoshis>");
 371         println!("connectpeer pubkey@host:port");
 372         println!("listchannels");
 373         println!("listpayments");
 374         println!("closechannel <channel_id>");
 375         println!("forceclosechannel <channel_id>");
 376         println!("nodeinfo");
 377         println!("listpeers");
 378         println!("signmessage <message>");
 379 }
 380
 381 fn node_info(channel_manager: Arc<ChannelManager>, peer_manager: Arc<PeerManager>) {
 382         println!("\t{{");
 383         println!("\t\t node_pubkey: {}", channel_manager.get_our_node_id());
 384         let chans = channel_manager.list_channels();
 385         println!("\t\t num_channels: {}", chans.len());
 386         println!("\t\t num_usable_channels: {}", chans.iter().filter(|c| c.is_usable).count());
 387         let local_balance_msat = chans
 388                 .iter()
 389                 .map(|c| c.unspendable_punishment_reserve.unwrap_or(0) * 1000 + c.outbound_capacity_msat)
 390                 .sum::<u64>();
 391         println!("\t\t local_balance_msat: {}", local_balance_msat);
 392         println!("\t\t num_peers: {}", peer_manager.get_peer_node_ids().len());
 393         println!("\t}},");
 394 }
 395
 396 fn list_peers(peer_manager: Arc<PeerManager>) {
 397         println!("\t{{");
 398         for pubkey in peer_manager.get_peer_node_ids() {
 399                 println!("\t\t pubkey: {}", pubkey);
 400         }
 401         println!("\t}},");
 402 }
 403
 404 fn list_channels(channel_manager: Arc<ChannelManager>) {
 405         print!("[");
 406         for chan_info in channel_manager.list_channels() {
 407                 println!("");
 408                 println!("\t{{");
 409                 println!("\t\tchannel_id: {},", hex_utils::hex_str(&chan_info.channel_id[..]));
 410                 if let Some(funding_txo) = chan_info.funding_txo {
 411                         println!("\t\tfunding_txid: {},", funding_txo.txid);
 412                 }
 413                 println!(
 414                         "\t\tpeer_pubkey: {},",
 415                         hex_utils::hex_str(&chan_info.counterparty.node_id.serialize())
 416                 );
 417                 if let Some(id) = chan_info.short_channel_id {
 418                         println!("\t\tshort_channel_id: {},", id);
 419                 }
 420                 println!("\t\tis_confirmed_onchain: {},", chan_info.is_funding_locked);
 421                 println!("\t\tchannel_value_satoshis: {},", chan_info.channel_value_satoshis);
 422                 println!(
 423                         "\t\tlocal_balance_msat: {},",
 424                         chan_info.outbound_capacity_msat
 425                                 + chan_info.unspendable_punishment_reserve.unwrap_or(0) * 1000
 426                 );
 427                 if chan_info.is_usable {
 428                         println!("\t\tavailable_balance_for_send_msat: {},", chan_info.outbound_capacity_msat);
 429                         println!("\t\tavailable_balance_for_recv_msat: {},", chan_info.inbound_capacity_msat);
 430                 }
 431                 println!("\t\tchannel_can_send_payments: {},", chan_info.is_usable);
 432                 println!("\t\tpublic: {},", chan_info.is_public);
 433                 println!("\t}},");
 434         }
 435         println!("]");
 436 }
 437
 438 fn list_payments(inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage) {
 439         let inbound = inbound_payments.lock().unwrap();
 440         let outbound = outbound_payments.lock().unwrap();
 441         print!("[");
 442         for (payment_hash, payment_info) in inbound.deref() {
 443                 println!("");
 444                 println!("\t{{");
 445                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 446                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 447                 println!("\t\thtlc_direction: inbound,");
 448                 println!(
 449                         "\t\thtlc_status: {},",
 450                         match payment_info.status {
 451                                 HTLCStatus::Pending => "pending",
 452                                 HTLCStatus::Succeeded => "succeeded",
 453                                 HTLCStatus::Failed => "failed",
 454                         }
 455                 );
 456
 457                 println!("\t}},");
 458         }
 459
 460         for (payment_hash, payment_info) in outbound.deref() {
 461                 println!("");
 462                 println!("\t{{");
 463                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 464                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 465                 println!("\t\thtlc_direction: outbound,");
 466                 println!(
 467                         "\t\thtlc_status: {},",
 468                         match payment_info.status {
 469                                 HTLCStatus::Pending => "pending",
 470                                 HTLCStatus::Succeeded => "succeeded",
 471                                 HTLCStatus::Failed => "failed",
 472                         }
 473                 );
 474
 475                 println!("\t}},");
 476         }
 477         println!("]");
 478 }
 479
 480 pub(crate) async fn connect_peer_if_necessary(
 481         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 482 ) -> Result<(), ()> {
 483         for node_pubkey in peer_manager.get_peer_node_ids() {
 484                 if node_pubkey == pubkey {
 485                         return Ok(());
 486                 }
 487         }
 488         let res = do_connect_peer(pubkey, peer_addr, peer_manager).await;
 489         if res.is_err() {
 490                 println!("ERROR: failed to connect to peer");
 491         }
 492         res
 493 }
 494
 495 pub(crate) async fn do_connect_peer(
 496         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 497 ) -> Result<(), ()> {
 498         match lightning_net_tokio::connect_outbound(Arc::clone(&peer_manager), pubkey, peer_addr).await
 499         {
 500                 Some(connection_closed_future) => {
 501                         let mut connection_closed_future = Box::pin(connection_closed_future);
 502                         loop {
 503                                 match futures::poll!(&mut connection_closed_future) {
 504                                         std::task::Poll::Ready(_) => {
 505                                                 return Err(());
 506                                         }
 507                                         std::task::Poll::Pending => {}
 508                                 }
 509                                 // Avoid blocking the tokio context by sleeping a bit
 510                                 match peer_manager.get_peer_node_ids().iter().find(|id| **id == pubkey) {
 511                                         Some(_) => return Ok(()),
 512                                         None => tokio::time::sleep(Duration::from_millis(10)).await,
 513                                 }
 514                         }
 515                 }
 516                 None => Err(()),
 517         }
 518 }
 519
 520 fn open_channel(
 521         peer_pubkey: PublicKey, channel_amt_sat: u64, announced_channel: bool,
 522         channel_manager: Arc<ChannelManager>,
 523 ) -> Result<(), ()> {
 524         let config = UserConfig {
 525                 peer_channel_config_limits: ChannelHandshakeLimits {
 526                         // lnd's max to_self_delay is 2016, so we want to be compatible.
 527                         their_to_self_delay: 2016,
 528                         ..Default::default()
 529                 },
 530                 channel_options: ChannelConfig { announced_channel, ..Default::default() },
 531                 ..Default::default()
 532         };
 533
 534         match channel_manager.create_channel(peer_pubkey, channel_amt_sat, 0, 0, Some(config)) {
 535                 Ok(_) => {
 536                         println!("EVENT: initiated channel with peer {}. ", peer_pubkey);
 537                         return Ok(());
 538                 }
 539                 Err(e) => {
 540                         println!("ERROR: failed to open channel: {:?}", e);
 541                         return Err(());
 542                 }
 543         }
 544 }
 545
 546 fn send_payment<E: EventHandler>(
 547         invoice_payer: &InvoicePayer<E>, invoice: &Invoice, payment_storage: PaymentInfoStorage,
 548 ) {
 549         let status = match invoice_payer.pay_invoice(invoice) {
 550                 Ok(_payment_id) => {
 551                         let payee_pubkey = invoice.recover_payee_pub_key();
 552                         let amt_msat = invoice.amount_milli_satoshis().unwrap();
 553                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee_pubkey);
 554                         print!("> ");
 555                         HTLCStatus::Pending
 556                 }
 557                 Err(PaymentError::Invoice(e)) => {
 558                         println!("ERROR: invalid invoice: {}", e);
 559                         print!("> ");
 560                         return;
 561                 }
 562                 Err(PaymentError::Routing(e)) => {
 563                         println!("ERROR: failed to find route: {}", e.err);
 564                         print!("> ");
 565                         return;
 566                 }
 567                 Err(PaymentError::Sending(e)) => {
 568                         println!("ERROR: failed to send payment: {:?}", e);
 569                         print!("> ");
 570                         HTLCStatus::Failed
 571                 }
 572         };
 573         let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
 574         let payment_secret = Some(invoice.payment_secret().clone());
 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(invoice.amount_milli_satoshis()),
 584                 },
 585         );
 586 }
 587
 588 fn keysend<E: EventHandler, K: KeysInterface>(
 589         invoice_payer: &InvoicePayer<E>, payee_pubkey: PublicKey, amt_msat: u64, keys: &K,
 590         payment_storage: PaymentInfoStorage,
 591 ) {
 592         let payment_preimage = keys.get_secure_random_bytes();
 593
 594         let status = match invoice_payer.pay_pubkey(
 595                 payee_pubkey,
 596                 PaymentPreimage(payment_preimage),
 597                 amt_msat,
 598                 40,
 599         ) {
 600                 Ok(_payment_id) => {
 601                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee_pubkey);
 602                         print!("> ");
 603                         HTLCStatus::Pending
 604                 }
 605                 Err(PaymentError::Invoice(e)) => {
 606                         println!("ERROR: invalid payee: {}", e);
 607                         print!("> ");
 608                         return;
 609                 }
 610                 Err(PaymentError::Routing(e)) => {
 611                         println!("ERROR: failed to find route: {}", e.err);
 612                         print!("> ");
 613                         return;
 614                 }
 615                 Err(PaymentError::Sending(e)) => {
 616                         println!("ERROR: failed to send payment: {:?}", e);
 617                         print!("> ");
 618                         HTLCStatus::Failed
 619                 }
 620         };
 621
 622         let mut payments = payment_storage.lock().unwrap();
 623         payments.insert(
 624                 PaymentHash(Sha256::hash(&payment_preimage).into_inner()),
 625                 PaymentInfo {
 626                         preimage: None,
 627                         secret: None,
 628                         status,
 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 }