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

   1 use crate::disk;
   2 use crate::hex_utils;
   3 use crate::{
   4         ChannelManager, HTLCStatus, InvoicePayer, MillisatAmount, NetworkGraph, OnionMessenger,
   5         PaymentInfo, PaymentInfoStorage, 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::PublicKey;
  11 use lightning::chain::keysinterface::{KeysInterface, KeysManager, Recipient};
  12 use lightning::ln::msgs::NetAddress;
  13 use lightning::ln::{PaymentHash, PaymentPreimage};
  14 use lightning::onion_message::Destination;
  15 use lightning::routing::gossip::NodeId;
  16 use lightning::util::config::{ChannelHandshakeConfig, ChannelHandshakeLimits, UserConfig};
  17 use lightning::util::events::EventHandler;
  18 use lightning_invoice::payment::PaymentError;
  19 use lightning_invoice::{utils, Currency, Invoice};
  20 use std::env;
  21 use std::io;
  22 use std::io::Write;
  23 use std::net::{IpAddr, SocketAddr, ToSocketAddrs};
  24 use std::ops::Deref;
  25 use std::path::Path;
  26 use std::str::FromStr;
  27 use std::sync::Arc;
  28 use std::time::Duration;
  29
  30 pub(crate) struct LdkUserInfo {
  31         pub(crate) bitcoind_rpc_username: String,
  32         pub(crate) bitcoind_rpc_password: String,
  33         pub(crate) bitcoind_rpc_port: u16,
  34         pub(crate) bitcoind_rpc_host: String,
  35         pub(crate) ldk_storage_dir_path: String,
  36         pub(crate) ldk_peer_listening_port: u16,
  37         pub(crate) ldk_announced_listen_addr: Vec<NetAddress>,
  38         pub(crate) ldk_announced_node_name: [u8; 32],
  39         pub(crate) network: Network,
  40 }
  41
  42 pub(crate) fn parse_startup_args() -> Result<LdkUserInfo, ()> {
  43         if env::args().len() < 3 {
  44                 println!("ldk-tutorial-node requires 3 arguments: `cargo run <bitcoind-rpc-username>:<bitcoind-rpc-password>@<bitcoind-rpc-host>:<bitcoind-rpc-port> ldk_storage_directory_path [<ldk-incoming-peer-listening-port>] [bitcoin-network] [announced-node-name announced-listen-addr*]`");
  45                 return Err(());
  46         }
  47         let bitcoind_rpc_info = env::args().skip(1).next().unwrap();
  48         let bitcoind_rpc_info_parts: Vec<&str> = bitcoind_rpc_info.rsplitn(2, "@").collect();
  49         if bitcoind_rpc_info_parts.len() != 2 {
  50                 println!("ERROR: bad bitcoind RPC URL provided");
  51                 return Err(());
  52         }
  53         let rpc_user_and_password: Vec<&str> = bitcoind_rpc_info_parts[1].split(":").collect();
  54         if rpc_user_and_password.len() != 2 {
  55                 println!("ERROR: bad bitcoind RPC username/password combo provided");
  56                 return Err(());
  57         }
  58         let bitcoind_rpc_username = rpc_user_and_password[0].to_string();
  59         let bitcoind_rpc_password = rpc_user_and_password[1].to_string();
  60         let bitcoind_rpc_path: Vec<&str> = bitcoind_rpc_info_parts[0].split(":").collect();
  61         if bitcoind_rpc_path.len() != 2 {
  62                 println!("ERROR: bad bitcoind RPC path provided");
  63                 return Err(());
  64         }
  65         let bitcoind_rpc_host = bitcoind_rpc_path[0].to_string();
  66         let bitcoind_rpc_port = bitcoind_rpc_path[1].parse::<u16>().unwrap();
  67
  68         let ldk_storage_dir_path = env::args().skip(2).next().unwrap();
  69
  70         let mut ldk_peer_port_set = true;
  71         let ldk_peer_listening_port: u16 = match env::args().skip(3).next().map(|p| p.parse()) {
  72                 Some(Ok(p)) => p,
  73                 Some(Err(_)) => {
  74                         ldk_peer_port_set = false;
  75                         9735
  76                 }
  77                 None => {
  78                         ldk_peer_port_set = false;
  79                         9735
  80                 }
  81         };
  82
  83         let mut arg_idx = match ldk_peer_port_set {
  84                 true => 4,
  85                 false => 3,
  86         };
  87         let network: Network = match env::args().skip(arg_idx).next().as_ref().map(String::as_str) {
  88                 Some("testnet") => Network::Testnet,
  89                 Some("regtest") => Network::Regtest,
  90                 Some("signet") => Network::Signet,
  91                 Some(net) => {
  92                         panic!("Unsupported network provided. Options are: `regtest`, `testnet`, and `signet`. 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>, onion_messenger: Arc<OnionMessenger>,
 147         inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage,
 148         ldk_data_dir: String, 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         loop {
 154                 print!("> ");
 155                 io::stdout().flush().unwrap(); // Without flushing, the `>` doesn't print
 156                 let mut line = String::new();
 157                 if let Err(e) = io::stdin().read_line(&mut line) {
 158                         break println!("ERROR: {e:#}");
 159                 }
 160
 161                 let mut words = line.split_whitespace();
 162                 if let Some(word) = words.next() {
 163                         match word {
 164                                 "help" => help(),
 165                                 "openchannel" => {
 166                                         let peer_pubkey_and_ip_addr = words.next();
 167                                         let channel_value_sat = words.next();
 168                                         if peer_pubkey_and_ip_addr.is_none() || channel_value_sat.is_none() {
 169                                                 println!("ERROR: openchannel has 2 required arguments: `openchannel pubkey@host:port channel_amt_satoshis` [--public]");
 170                                                 continue;
 171                                         }
 172                                         let peer_pubkey_and_ip_addr = peer_pubkey_and_ip_addr.unwrap();
 173                                         let (pubkey, peer_addr) =
 174                                                 match parse_peer_info(peer_pubkey_and_ip_addr.to_string()) {
 175                                                         Ok(info) => info,
 176                                                         Err(e) => {
 177                                                                 println!("{:?}", e.into_inner().unwrap());
 178                                                                 continue;
 179                                                         }
 180                                                 };
 181
 182                                         let chan_amt_sat: Result<u64, _> = channel_value_sat.unwrap().parse();
 183                                         if chan_amt_sat.is_err() {
 184                                                 println!("ERROR: channel amount must be a number");
 185                                                 continue;
 186                                         }
 187
 188                                         if connect_peer_if_necessary(pubkey, peer_addr, peer_manager.clone())
 189                                                 .await
 190                                                 .is_err()
 191                                         {
 192                                                 continue;
 193                                         };
 194
 195                                         let announce_channel = match words.next() {
 196                                                 Some("--public") | Some("--public=true") => true,
 197                                                 Some("--public=false") => false,
 198                                                 Some(_) => {
 199                                                         println!("ERROR: invalid `--public` command format. Valid formats: `--public`, `--public=true` `--public=false`");
 200                                                         continue;
 201                                                 }
 202                                                 None => false,
 203                                         };
 204
 205                                         if open_channel(
 206                                                 pubkey,
 207                                                 chan_amt_sat.unwrap(),
 208                                                 announce_channel,
 209                                                 channel_manager.clone(),
 210                                         )
 211                                         .is_ok()
 212                                         {
 213                                                 let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone());
 214                                                 let _ = disk::persist_channel_peer(
 215                                                         Path::new(&peer_data_path),
 216                                                         peer_pubkey_and_ip_addr,
 217                                                 );
 218                                         }
 219                                 }
 220                                 "sendpayment" => {
 221                                         let invoice_str = words.next();
 222                                         if invoice_str.is_none() {
 223                                                 println!("ERROR: sendpayment requires an invoice: `sendpayment <invoice>`");
 224                                                 continue;
 225                                         }
 226
 227                                         let invoice = match Invoice::from_str(invoice_str.unwrap()) {
 228                                                 Ok(inv) => inv,
 229                                                 Err(e) => {
 230                                                         println!("ERROR: invalid invoice: {:?}", e);
 231                                                         continue;
 232                                                 }
 233                                         };
 234
 235                                         send_payment(&*invoice_payer, &invoice, outbound_payments.clone());
 236                                 }
 237                                 "keysend" => {
 238                                         let dest_pubkey = match words.next() {
 239                                                 Some(dest) => match hex_utils::to_compressed_pubkey(dest) {
 240                                                         Some(pk) => pk,
 241                                                         None => {
 242                                                                 println!("ERROR: couldn't parse destination pubkey");
 243                                                                 continue;
 244                                                         }
 245                                                 },
 246                                                 None => {
 247                                                         println!("ERROR: keysend requires a destination pubkey: `keysend <dest_pubkey> <amt_msat>`");
 248                                                         continue;
 249                                                 }
 250                                         };
 251                                         let amt_msat_str = match words.next() {
 252                                                 Some(amt) => amt,
 253                                                 None => {
 254                                                         println!("ERROR: keysend requires an amount in millisatoshis: `keysend <dest_pubkey> <amt_msat>`");
 255                                                         continue;
 256                                                 }
 257                                         };
 258                                         let amt_msat: u64 = match amt_msat_str.parse() {
 259                                                 Ok(amt) => amt,
 260                                                 Err(e) => {
 261                                                         println!("ERROR: couldn't parse amount_msat: {}", e);
 262                                                         continue;
 263                                                 }
 264                                         };
 265                                         keysend(
 266                                                 &*invoice_payer,
 267                                                 dest_pubkey,
 268                                                 amt_msat,
 269                                                 &*keys_manager,
 270                                                 outbound_payments.clone(),
 271                                         );
 272                                 }
 273                                 "getinvoice" => {
 274                                         let amt_str = words.next();
 275                                         if amt_str.is_none() {
 276                                                 println!("ERROR: getinvoice requires an amount in millisatoshis");
 277                                                 continue;
 278                                         }
 279
 280                                         let amt_msat: Result<u64, _> = amt_str.unwrap().parse();
 281                                         if amt_msat.is_err() {
 282                                                 println!("ERROR: getinvoice provided payment amount was not a number");
 283                                                 continue;
 284                                         }
 285
 286                                         let expiry_secs_str = words.next();
 287                                         if expiry_secs_str.is_none() {
 288                                                 println!("ERROR: getinvoice requires an expiry in seconds");
 289                                                 continue;
 290                                         }
 291
 292                                         let expiry_secs: Result<u32, _> = expiry_secs_str.unwrap().parse();
 293                                         if expiry_secs.is_err() {
 294                                                 println!("ERROR: getinvoice provided expiry was not a number");
 295                                                 continue;
 296                                         }
 297
 298                                         get_invoice(
 299                                                 amt_msat.unwrap(),
 300                                                 inbound_payments.clone(),
 301                                                 channel_manager.clone(),
 302                                                 keys_manager.clone(),
 303                                                 network,
 304                                                 expiry_secs.unwrap(),
 305                                         );
 306                                 }
 307                                 "connectpeer" => {
 308                                         let peer_pubkey_and_ip_addr = words.next();
 309                                         if peer_pubkey_and_ip_addr.is_none() {
 310                                                 println!("ERROR: connectpeer requires peer connection info: `connectpeer pubkey@host:port`");
 311                                                 continue;
 312                                         }
 313                                         let (pubkey, peer_addr) =
 314                                                 match parse_peer_info(peer_pubkey_and_ip_addr.unwrap().to_string()) {
 315                                                         Ok(info) => info,
 316                                                         Err(e) => {
 317                                                                 println!("{:?}", e.into_inner().unwrap());
 318                                                                 continue;
 319                                                         }
 320                                                 };
 321                                         if connect_peer_if_necessary(pubkey, peer_addr, peer_manager.clone())
 322                                                 .await
 323                                                 .is_ok()
 324                                         {
 325                                                 println!("SUCCESS: connected to peer {}", pubkey);
 326                                         }
 327                                 }
 328                                 "listchannels" => list_channels(&channel_manager, &network_graph),
 329                                 "listpayments" => {
 330                                         list_payments(inbound_payments.clone(), outbound_payments.clone())
 331                                 }
 332                                 "closechannel" => {
 333                                         let channel_id_str = words.next();
 334                                         if channel_id_str.is_none() {
 335                                                 println!("ERROR: closechannel requires a channel ID: `closechannel <channel_id> <peer_pubkey>`");
 336                                                 continue;
 337                                         }
 338                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 339                                         if channel_id_vec.is_none() || channel_id_vec.as_ref().unwrap().len() != 32 {
 340                                                 println!("ERROR: couldn't parse channel_id");
 341                                                 continue;
 342                                         }
 343                                         let mut channel_id = [0; 32];
 344                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 345
 346                                         let peer_pubkey_str = words.next();
 347                                         if peer_pubkey_str.is_none() {
 348                                                 println!("ERROR: closechannel requires a peer pubkey: `closechannel <channel_id> <peer_pubkey>`");
 349                                                 continue;
 350                                         }
 351                                         let peer_pubkey_vec = match hex_utils::to_vec(peer_pubkey_str.unwrap()) {
 352                                                 Some(peer_pubkey_vec) => peer_pubkey_vec,
 353                                                 None => {
 354                                                         println!("ERROR: couldn't parse peer_pubkey");
 355                                                         continue;
 356                                                 }
 357                                         };
 358                                         let peer_pubkey = match PublicKey::from_slice(&peer_pubkey_vec) {
 359                                                 Ok(peer_pubkey) => peer_pubkey,
 360                                                 Err(_) => {
 361                                                         println!("ERROR: couldn't parse peer_pubkey");
 362                                                         continue;
 363                                                 }
 364                                         };
 365
 366                                         close_channel(channel_id, peer_pubkey, channel_manager.clone());
 367                                 }
 368                                 "forceclosechannel" => {
 369                                         let channel_id_str = words.next();
 370                                         if channel_id_str.is_none() {
 371                                                 println!("ERROR: forceclosechannel requires a channel ID: `forceclosechannel <channel_id> <peer_pubkey>`");
 372                                                 continue;
 373                                         }
 374                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 375                                         if channel_id_vec.is_none() || channel_id_vec.as_ref().unwrap().len() != 32 {
 376                                                 println!("ERROR: couldn't parse channel_id");
 377                                                 continue;
 378                                         }
 379                                         let mut channel_id = [0; 32];
 380                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 381
 382                                         let peer_pubkey_str = words.next();
 383                                         if peer_pubkey_str.is_none() {
 384                                                 println!("ERROR: forceclosechannel requires a peer pubkey: `forceclosechannel <channel_id> <peer_pubkey>`");
 385                                                 continue;
 386                                         }
 387                                         let peer_pubkey_vec = match hex_utils::to_vec(peer_pubkey_str.unwrap()) {
 388                                                 Some(peer_pubkey_vec) => peer_pubkey_vec,
 389                                                 None => {
 390                                                         println!("ERROR: couldn't parse peer_pubkey");
 391                                                         continue;
 392                                                 }
 393                                         };
 394                                         let peer_pubkey = match PublicKey::from_slice(&peer_pubkey_vec) {
 395                                                 Ok(peer_pubkey) => peer_pubkey,
 396                                                 Err(_) => {
 397                                                         println!("ERROR: couldn't parse peer_pubkey");
 398                                                         continue;
 399                                                 }
 400                                         };
 401
 402                                         force_close_channel(channel_id, peer_pubkey, channel_manager.clone());
 403                                 }
 404                                 "nodeinfo" => node_info(&channel_manager, &peer_manager),
 405                                 "listpeers" => list_peers(peer_manager.clone()),
 406                                 "signmessage" => {
 407                                         const MSG_STARTPOS: usize = "signmessage".len() + 1;
 408                                         if line.as_bytes().len() <= MSG_STARTPOS {
 409                                                 println!("ERROR: signmsg requires a message");
 410                                                 continue;
 411                                         }
 412                                         println!(
 413                                                 "{:?}",
 414                                                 lightning::util::message_signing::sign(
 415                                                         &line.as_bytes()[MSG_STARTPOS..],
 416                                                         &keys_manager.get_node_secret(Recipient::Node).unwrap()
 417                                                 )
 418                                         );
 419                                 }
 420                                 "sendonionmessage" => {
 421                                         let path_pks_str = words.next();
 422                                         if path_pks_str.is_none() {
 423                                                 println!(
 424                                                         "ERROR: sendonionmessage requires at least one node id for the path"
 425                                                 );
 426                                                 continue;
 427                                         }
 428                                         let mut node_pks = Vec::new();
 429                                         let mut errored = false;
 430                                         for pk_str in path_pks_str.unwrap().split(",") {
 431                                                 let node_pubkey_vec = match hex_utils::to_vec(pk_str) {
 432                                                         Some(peer_pubkey_vec) => peer_pubkey_vec,
 433                                                         None => {
 434                                                                 println!("ERROR: couldn't parse peer_pubkey");
 435                                                                 errored = true;
 436                                                                 break;
 437                                                         }
 438                                                 };
 439                                                 let node_pubkey = match PublicKey::from_slice(&node_pubkey_vec) {
 440                                                         Ok(peer_pubkey) => peer_pubkey,
 441                                                         Err(_) => {
 442                                                                 println!("ERROR: couldn't parse peer_pubkey");
 443                                                                 errored = true;
 444                                                                 break;
 445                                                         }
 446                                                 };
 447                                                 node_pks.push(node_pubkey);
 448                                         }
 449                                         if errored {
 450                                                 continue;
 451                                         }
 452                                         let destination_pk = node_pks.pop().unwrap();
 453                                         match onion_messenger.send_onion_message(
 454                                                 &node_pks,
 455                                                 Destination::Node(destination_pk),
 456                                                 None,
 457                                         ) {
 458                                                 Ok(()) => println!("SUCCESS: forwarded onion message to first hop"),
 459                                                 Err(e) => println!("ERROR: failed to send onion message: {:?}", e),
 460                                         }
 461                                 }
 462                                 _ => println!("Unknown command. See `\"help\" for available commands."),
 463                         }
 464                 }
 465         }
 466 }
 467
 468 fn help() {
 469         println!("openchannel pubkey@host:port <amt_satoshis> [--public]");
 470         println!("sendpayment <invoice>");
 471         println!("keysend <dest_pubkey> <amt_msats>");
 472         println!("getinvoice <amt_msats> <expiry_secs>");
 473         println!("connectpeer pubkey@host:port");
 474         println!("listchannels");
 475         println!("listpayments");
 476         println!("closechannel <channel_id> <peer_pubkey>");
 477         println!("forceclosechannel <channel_id> <peer_pubkey>");
 478         println!("nodeinfo");
 479         println!("listpeers");
 480         println!("signmessage <message>");
 481         println!("sendonionmessage <node_id_1,node_id_2,..,destination_node_id>");
 482 }
 483
 484 fn node_info(channel_manager: &Arc<ChannelManager>, peer_manager: &Arc<PeerManager>) {
 485         println!("\t{{");
 486         println!("\t\t node_pubkey: {}", channel_manager.get_our_node_id());
 487         let chans = channel_manager.list_channels();
 488         println!("\t\t num_channels: {}", chans.len());
 489         println!("\t\t num_usable_channels: {}", chans.iter().filter(|c| c.is_usable).count());
 490         let local_balance_msat = chans.iter().map(|c| c.balance_msat).sum::<u64>();
 491         println!("\t\t local_balance_msat: {}", local_balance_msat);
 492         println!("\t\t num_peers: {}", peer_manager.get_peer_node_ids().len());
 493         println!("\t}},");
 494 }
 495
 496 fn list_peers(peer_manager: Arc<PeerManager>) {
 497         println!("\t{{");
 498         for pubkey in peer_manager.get_peer_node_ids() {
 499                 println!("\t\t pubkey: {}", pubkey);
 500         }
 501         println!("\t}},");
 502 }
 503
 504 fn list_channels(channel_manager: &Arc<ChannelManager>, network_graph: &Arc<NetworkGraph>) {
 505         print!("[");
 506         for chan_info in channel_manager.list_channels() {
 507                 println!("");
 508                 println!("\t{{");
 509                 println!("\t\tchannel_id: {},", hex_utils::hex_str(&chan_info.channel_id[..]));
 510                 if let Some(funding_txo) = chan_info.funding_txo {
 511                         println!("\t\tfunding_txid: {},", funding_txo.txid);
 512                 }
 513
 514                 println!(
 515                         "\t\tpeer_pubkey: {},",
 516                         hex_utils::hex_str(&chan_info.counterparty.node_id.serialize())
 517                 );
 518                 if let Some(node_info) = network_graph
 519                         .read_only()
 520                         .nodes()
 521                         .get(&NodeId::from_pubkey(&chan_info.counterparty.node_id))
 522                 {
 523                         if let Some(announcement) = &node_info.announcement_info {
 524                                 println!("\t\tpeer_alias: {}", announcement.alias);
 525                         }
 526                 }
 527
 528                 if let Some(id) = chan_info.short_channel_id {
 529                         println!("\t\tshort_channel_id: {},", id);
 530                 }
 531                 println!("\t\tis_channel_ready: {},", chan_info.is_channel_ready);
 532                 println!("\t\tchannel_value_satoshis: {},", chan_info.channel_value_satoshis);
 533                 println!("\t\tlocal_balance_msat: {},", chan_info.balance_msat);
 534                 if chan_info.is_usable {
 535                         println!("\t\tavailable_balance_for_send_msat: {},", chan_info.outbound_capacity_msat);
 536                         println!("\t\tavailable_balance_for_recv_msat: {},", chan_info.inbound_capacity_msat);
 537                 }
 538                 println!("\t\tchannel_can_send_payments: {},", chan_info.is_usable);
 539                 println!("\t\tpublic: {},", chan_info.is_public);
 540                 println!("\t}},");
 541         }
 542         println!("]");
 543 }
 544
 545 fn list_payments(inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage) {
 546         let inbound = inbound_payments.lock().unwrap();
 547         let outbound = outbound_payments.lock().unwrap();
 548         print!("[");
 549         for (payment_hash, payment_info) in inbound.deref() {
 550                 println!("");
 551                 println!("\t{{");
 552                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 553                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 554                 println!("\t\thtlc_direction: inbound,");
 555                 println!(
 556                         "\t\thtlc_status: {},",
 557                         match payment_info.status {
 558                                 HTLCStatus::Pending => "pending",
 559                                 HTLCStatus::Succeeded => "succeeded",
 560                                 HTLCStatus::Failed => "failed",
 561                         }
 562                 );
 563
 564                 println!("\t}},");
 565         }
 566
 567         for (payment_hash, payment_info) in outbound.deref() {
 568                 println!("");
 569                 println!("\t{{");
 570                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 571                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 572                 println!("\t\thtlc_direction: outbound,");
 573                 println!(
 574                         "\t\thtlc_status: {},",
 575                         match payment_info.status {
 576                                 HTLCStatus::Pending => "pending",
 577                                 HTLCStatus::Succeeded => "succeeded",
 578                                 HTLCStatus::Failed => "failed",
 579                         }
 580                 );
 581
 582                 println!("\t}},");
 583         }
 584         println!("]");
 585 }
 586
 587 pub(crate) async fn connect_peer_if_necessary(
 588         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 589 ) -> Result<(), ()> {
 590         for node_pubkey in peer_manager.get_peer_node_ids() {
 591                 if node_pubkey == pubkey {
 592                         return Ok(());
 593                 }
 594         }
 595         let res = do_connect_peer(pubkey, peer_addr, peer_manager).await;
 596         if res.is_err() {
 597                 println!("ERROR: failed to connect to peer");
 598         }
 599         res
 600 }
 601
 602 pub(crate) async fn do_connect_peer(
 603         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 604 ) -> Result<(), ()> {
 605         match lightning_net_tokio::connect_outbound(Arc::clone(&peer_manager), pubkey, peer_addr).await
 606         {
 607                 Some(connection_closed_future) => {
 608                         let mut connection_closed_future = Box::pin(connection_closed_future);
 609                         loop {
 610                                 match futures::poll!(&mut connection_closed_future) {
 611                                         std::task::Poll::Ready(_) => {
 612                                                 return Err(());
 613                                         }
 614                                         std::task::Poll::Pending => {}
 615                                 }
 616                                 // Avoid blocking the tokio context by sleeping a bit
 617                                 match peer_manager.get_peer_node_ids().iter().find(|id| **id == pubkey) {
 618                                         Some(_) => return Ok(()),
 619                                         None => tokio::time::sleep(Duration::from_millis(10)).await,
 620                                 }
 621                         }
 622                 }
 623                 None => Err(()),
 624         }
 625 }
 626
 627 fn open_channel(
 628         peer_pubkey: PublicKey, channel_amt_sat: u64, announced_channel: bool,
 629         channel_manager: Arc<ChannelManager>,
 630 ) -> Result<(), ()> {
 631         let config = UserConfig {
 632                 channel_handshake_limits: ChannelHandshakeLimits {
 633                         // lnd's max to_self_delay is 2016, so we want to be compatible.
 634                         their_to_self_delay: 2016,
 635                         ..Default::default()
 636                 },
 637                 channel_handshake_config: ChannelHandshakeConfig {
 638                         announced_channel,
 639                         ..Default::default()
 640                 },
 641                 ..Default::default()
 642         };
 643
 644         match channel_manager.create_channel(peer_pubkey, channel_amt_sat, 0, 0, Some(config)) {
 645                 Ok(_) => {
 646                         println!("EVENT: initiated channel with peer {}. ", peer_pubkey);
 647                         return Ok(());
 648                 }
 649                 Err(e) => {
 650                         println!("ERROR: failed to open channel: {:?}", e);
 651                         return Err(());
 652                 }
 653         }
 654 }
 655
 656 fn send_payment<E: EventHandler>(
 657         invoice_payer: &InvoicePayer<E>, invoice: &Invoice, payment_storage: PaymentInfoStorage,
 658 ) {
 659         let status = match invoice_payer.pay_invoice(invoice) {
 660                 Ok(_payment_id) => {
 661                         let payee_pubkey = invoice.recover_payee_pub_key();
 662                         let amt_msat = invoice.amount_milli_satoshis().unwrap();
 663                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee_pubkey);
 664                         print!("> ");
 665                         HTLCStatus::Pending
 666                 }
 667                 Err(PaymentError::Invoice(e)) => {
 668                         println!("ERROR: invalid invoice: {}", e);
 669                         print!("> ");
 670                         return;
 671                 }
 672                 Err(PaymentError::Routing(e)) => {
 673                         println!("ERROR: failed to find route: {}", e.err);
 674                         print!("> ");
 675                         return;
 676                 }
 677                 Err(PaymentError::Sending(e)) => {
 678                         println!("ERROR: failed to send payment: {:?}", e);
 679                         print!("> ");
 680                         HTLCStatus::Failed
 681                 }
 682         };
 683         let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
 684         let payment_secret = Some(invoice.payment_secret().clone());
 685
 686         let mut payments = payment_storage.lock().unwrap();
 687         payments.insert(
 688                 payment_hash,
 689                 PaymentInfo {
 690                         preimage: None,
 691                         secret: payment_secret,
 692                         status,
 693                         amt_msat: MillisatAmount(invoice.amount_milli_satoshis()),
 694                 },
 695         );
 696 }
 697
 698 fn keysend<E: EventHandler, K: KeysInterface>(
 699         invoice_payer: &InvoicePayer<E>, payee_pubkey: PublicKey, amt_msat: u64, keys: &K,
 700         payment_storage: PaymentInfoStorage,
 701 ) {
 702         let payment_preimage = keys.get_secure_random_bytes();
 703
 704         let status = match invoice_payer.pay_pubkey(
 705                 payee_pubkey,
 706                 PaymentPreimage(payment_preimage),
 707                 amt_msat,
 708                 40,
 709         ) {
 710                 Ok(_payment_id) => {
 711                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee_pubkey);
 712                         print!("> ");
 713                         HTLCStatus::Pending
 714                 }
 715                 Err(PaymentError::Invoice(e)) => {
 716                         println!("ERROR: invalid payee: {}", e);
 717                         print!("> ");
 718                         return;
 719                 }
 720                 Err(PaymentError::Routing(e)) => {
 721                         println!("ERROR: failed to find route: {}", e.err);
 722                         print!("> ");
 723                         return;
 724                 }
 725                 Err(PaymentError::Sending(e)) => {
 726                         println!("ERROR: failed to send payment: {:?}", e);
 727                         print!("> ");
 728                         HTLCStatus::Failed
 729                 }
 730         };
 731
 732         let mut payments = payment_storage.lock().unwrap();
 733         payments.insert(
 734                 PaymentHash(Sha256::hash(&payment_preimage).into_inner()),
 735                 PaymentInfo {
 736                         preimage: None,
 737                         secret: None,
 738                         status,
 739                         amt_msat: MillisatAmount(Some(amt_msat)),
 740                 },
 741         );
 742 }
 743
 744 fn get_invoice(
 745         amt_msat: u64, payment_storage: PaymentInfoStorage, channel_manager: Arc<ChannelManager>,
 746         keys_manager: Arc<KeysManager>, network: Network, expiry_secs: u32,
 747 ) {
 748         let mut payments = payment_storage.lock().unwrap();
 749         let currency = match network {
 750                 Network::Bitcoin => Currency::Bitcoin,
 751                 Network::Testnet => Currency::BitcoinTestnet,
 752                 Network::Regtest => Currency::Regtest,
 753                 Network::Signet => Currency::Signet,
 754         };
 755         let invoice = match utils::create_invoice_from_channelmanager(
 756                 &channel_manager,
 757                 keys_manager,
 758                 currency,
 759                 Some(amt_msat),
 760                 "ldk-tutorial-node".to_string(),
 761                 expiry_secs,
 762         ) {
 763                 Ok(inv) => {
 764                         println!("SUCCESS: generated invoice: {}", inv);
 765                         inv
 766                 }
 767                 Err(e) => {
 768                         println!("ERROR: failed to create invoice: {:?}", e);
 769                         return;
 770                 }
 771         };
 772
 773         let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
 774         payments.insert(
 775                 payment_hash,
 776                 PaymentInfo {
 777                         preimage: None,
 778                         secret: Some(invoice.payment_secret().clone()),
 779                         status: HTLCStatus::Pending,
 780                         amt_msat: MillisatAmount(Some(amt_msat)),
 781                 },
 782         );
 783 }
 784
 785 fn close_channel(
 786         channel_id: [u8; 32], counterparty_node_id: PublicKey, channel_manager: Arc<ChannelManager>,
 787 ) {
 788         match channel_manager.close_channel(&channel_id, &counterparty_node_id) {
 789                 Ok(()) => println!("EVENT: initiating channel close"),
 790                 Err(e) => println!("ERROR: failed to close channel: {:?}", e),
 791         }
 792 }
 793
 794 fn force_close_channel(
 795         channel_id: [u8; 32], counterparty_node_id: PublicKey, channel_manager: Arc<ChannelManager>,
 796 ) {
 797         match channel_manager.force_close_broadcasting_latest_txn(&channel_id, &counterparty_node_id) {
 798                 Ok(()) => println!("EVENT: initiating channel force-close"),
 799                 Err(e) => println!("ERROR: failed to force-close channel: {:?}", e),
 800         }
 801 }
 802
 803 pub(crate) fn parse_peer_info(
 804         peer_pubkey_and_ip_addr: String,
 805 ) -> Result<(PublicKey, SocketAddr), std::io::Error> {
 806         let mut pubkey_and_addr = peer_pubkey_and_ip_addr.split("@");
 807         let pubkey = pubkey_and_addr.next();
 808         let peer_addr_str = pubkey_and_addr.next();
 809         if peer_addr_str.is_none() {
 810                 return Err(std::io::Error::new(
 811                         std::io::ErrorKind::Other,
 812                         "ERROR: incorrectly formatted peer info. Should be formatted as: `pubkey@host:port`",
 813                 ));
 814         }
 815
 816         let peer_addr = peer_addr_str.unwrap().to_socket_addrs().map(|mut r| r.next());
 817         if peer_addr.is_err() || peer_addr.as_ref().unwrap().is_none() {
 818                 return Err(std::io::Error::new(
 819                         std::io::ErrorKind::Other,
 820                         "ERROR: couldn't parse pubkey@host:port into a socket address",
 821                 ));
 822         }
 823
 824         let pubkey = hex_utils::to_compressed_pubkey(pubkey.unwrap());
 825         if pubkey.is_none() {
 826                 return Err(std::io::Error::new(
 827                         std::io::ErrorKind::Other,
 828                         "ERROR: unable to parse given pubkey for node",
 829                 ));
 830         }
 831
 832         Ok((pubkey.unwrap(), peer_addr.unwrap().unwrap()))
 833 }