_ 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::{DecodeError, NetAddress};
  13 use lightning::ln::{PaymentHash, PaymentPreimage};
  14 use lightning::onion_message::{CustomOnionMessageContents, Destination, OnionMessageContents};
  15 use lightning::routing::gossip::NodeId;
  16 use lightning::util::config::{ChannelHandshakeConfig, ChannelHandshakeLimits, UserConfig};
  17 use lightning::util::events::EventHandler;
  18 use lightning::util::ser::{Writeable, Writer};
  19 use lightning_invoice::payment::PaymentError;
  20 use lightning_invoice::{utils, Currency, Invoice};
  21 use std::env;
  22 use std::io;
  23 use std::io::Write;
  24 use std::net::{SocketAddr, ToSocketAddrs};
  25 use std::ops::Deref;
  26 use std::path::Path;
  27 use std::str::FromStr;
  28 use std::sync::Arc;
  29 use std::time::Duration;
  30
  31 pub(crate) struct LdkUserInfo {
  32         pub(crate) bitcoind_rpc_username: String,
  33         pub(crate) bitcoind_rpc_password: String,
  34         pub(crate) bitcoind_rpc_port: u16,
  35         pub(crate) bitcoind_rpc_host: String,
  36         pub(crate) ldk_storage_dir_path: String,
  37         pub(crate) ldk_peer_listening_port: u16,
  38         pub(crate) ldk_announced_listen_addr: Vec<NetAddress>,
  39         pub(crate) ldk_announced_node_name: [u8; 32],
  40         pub(crate) network: Network,
  41 }
  42
  43 struct UserOnionMessageContents {
  44         tlv_type: u64,
  45         data: Vec<u8>,
  46 }
  47
  48 impl CustomOnionMessageContents for UserOnionMessageContents {
  49         fn tlv_type(&self) -> u64 {
  50                 self.tlv_type
  51         }
  52 }
  53
  54 impl Writeable for UserOnionMessageContents {
  55         fn write<W: Writer>(&self, w: &mut W) -> Result<(), std::io::Error> {
  56                 w.write_all(&self.data)
  57         }
  58 }
  59
  60 pub(crate) async fn poll_for_user_input<E: EventHandler>(
  61         invoice_payer: Arc<InvoicePayer<E>>, peer_manager: Arc<PeerManager>,
  62         channel_manager: Arc<ChannelManager>, keys_manager: Arc<KeysManager>,
  63         network_graph: Arc<NetworkGraph>, onion_messenger: Arc<OnionMessenger>,
  64         inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage,
  65         ldk_data_dir: String, network: Network, logger: Arc<disk::FilesystemLogger>,
  66 ) {
  67         println!(
  68                 "LDK startup successful. Enter \"help\" to view available commands. Press Ctrl-D to quit."
  69         );
  70         println!("LDK logs are available at <your-supplied-ldk-data-dir-path>/.ldk/logs");
  71         println!("Local Node ID is {}.", channel_manager.get_our_node_id());
  72         loop {
  73                 print!("> ");
  74                 io::stdout().flush().unwrap(); // Without flushing, the `>` doesn't print
  75                 let mut line = String::new();
  76                 if let Err(e) = io::stdin().read_line(&mut line) {
  77                         break println!("ERROR: {}", e);
  78                 }
  79
  80                 if line.len() == 0 {
  81                         // We hit EOF / Ctrl-D
  82                         break;
  83                 }
  84
  85                 let mut words = line.split_whitespace();
  86                 if let Some(word) = words.next() {
  87                         match word {
  88                                 "help" => help(),
  89                                 "openchannel" => {
  90                                         let peer_pubkey_and_ip_addr = words.next();
  91                                         let channel_value_sat = words.next();
  92                                         if peer_pubkey_and_ip_addr.is_none() || channel_value_sat.is_none() {
  93                                                 println!("ERROR: openchannel has 2 required arguments: `openchannel pubkey@host:port channel_amt_satoshis` [--public]");
  94                                                 continue;
  95                                         }
  96                                         let peer_pubkey_and_ip_addr = peer_pubkey_and_ip_addr.unwrap();
  97                                         let (pubkey, peer_addr) =
  98                                                 match parse_peer_info(peer_pubkey_and_ip_addr.to_string()) {
  99                                                         Ok(info) => info,
 100                                                         Err(e) => {
 101                                                                 println!("{:?}", e.into_inner().unwrap());
 102                                                                 continue;
 103                                                         }
 104                                                 };
 105
 106                                         let chan_amt_sat: Result<u64, _> = channel_value_sat.unwrap().parse();
 107                                         if chan_amt_sat.is_err() {
 108                                                 println!("ERROR: channel amount must be a number");
 109                                                 continue;
 110                                         }
 111
 112                                         if connect_peer_if_necessary(pubkey, peer_addr, peer_manager.clone())
 113                                                 .await
 114                                                 .is_err()
 115                                         {
 116                                                 continue;
 117                                         };
 118
 119                                         let announce_channel = match words.next() {
 120                                                 Some("--public") | Some("--public=true") => true,
 121                                                 Some("--public=false") => false,
 122                                                 Some(_) => {
 123                                                         println!("ERROR: invalid `--public` command format. Valid formats: `--public`, `--public=true` `--public=false`");
 124                                                         continue;
 125                                                 }
 126                                                 None => false,
 127                                         };
 128
 129                                         if open_channel(
 130                                                 pubkey,
 131                                                 chan_amt_sat.unwrap(),
 132                                                 announce_channel,
 133                                                 channel_manager.clone(),
 134                                         )
 135                                         .is_ok()
 136                                         {
 137                                                 let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone());
 138                                                 let _ = disk::persist_channel_peer(
 139                                                         Path::new(&peer_data_path),
 140                                                         peer_pubkey_and_ip_addr,
 141                                                 );
 142                                         }
 143                                 }
 144                                 "sendpayment" => {
 145                                         let invoice_str = words.next();
 146                                         if invoice_str.is_none() {
 147                                                 println!("ERROR: sendpayment requires an invoice: `sendpayment <invoice>`");
 148                                                 continue;
 149                                         }
 150
 151                                         let invoice = match Invoice::from_str(invoice_str.unwrap()) {
 152                                                 Ok(inv) => inv,
 153                                                 Err(e) => {
 154                                                         println!("ERROR: invalid invoice: {:?}", e);
 155                                                         continue;
 156                                                 }
 157                                         };
 158
 159                                         send_payment(&*invoice_payer, &invoice, outbound_payments.clone());
 160                                 }
 161                                 "keysend" => {
 162                                         let dest_pubkey = match words.next() {
 163                                                 Some(dest) => match hex_utils::to_compressed_pubkey(dest) {
 164                                                         Some(pk) => pk,
 165                                                         None => {
 166                                                                 println!("ERROR: couldn't parse destination pubkey");
 167                                                                 continue;
 168                                                         }
 169                                                 },
 170                                                 None => {
 171                                                         println!("ERROR: keysend requires a destination pubkey: `keysend <dest_pubkey> <amt_msat>`");
 172                                                         continue;
 173                                                 }
 174                                         };
 175                                         let amt_msat_str = match words.next() {
 176                                                 Some(amt) => amt,
 177                                                 None => {
 178                                                         println!("ERROR: keysend requires an amount in millisatoshis: `keysend <dest_pubkey> <amt_msat>`");
 179                                                         continue;
 180                                                 }
 181                                         };
 182                                         let amt_msat: u64 = match amt_msat_str.parse() {
 183                                                 Ok(amt) => amt,
 184                                                 Err(e) => {
 185                                                         println!("ERROR: couldn't parse amount_msat: {}", e);
 186                                                         continue;
 187                                                 }
 188                                         };
 189                                         keysend(
 190                                                 &*invoice_payer,
 191                                                 dest_pubkey,
 192                                                 amt_msat,
 193                                                 &*keys_manager,
 194                                                 outbound_payments.clone(),
 195                                         );
 196                                 }
 197                                 "getinvoice" => {
 198                                         let amt_str = words.next();
 199                                         if amt_str.is_none() {
 200                                                 println!("ERROR: getinvoice requires an amount in millisatoshis");
 201                                                 continue;
 202                                         }
 203
 204                                         let amt_msat: Result<u64, _> = amt_str.unwrap().parse();
 205                                         if amt_msat.is_err() {
 206                                                 println!("ERROR: getinvoice provided payment amount was not a number");
 207                                                 continue;
 208                                         }
 209
 210                                         let expiry_secs_str = words.next();
 211                                         if expiry_secs_str.is_none() {
 212                                                 println!("ERROR: getinvoice requires an expiry in seconds");
 213                                                 continue;
 214                                         }
 215
 216                                         let expiry_secs: Result<u32, _> = expiry_secs_str.unwrap().parse();
 217                                         if expiry_secs.is_err() {
 218                                                 println!("ERROR: getinvoice provided expiry was not a number");
 219                                                 continue;
 220                                         }
 221
 222                                         get_invoice(
 223                                                 amt_msat.unwrap(),
 224                                                 Arc::clone(&inbound_payments),
 225                                                 &*channel_manager,
 226                                                 Arc::clone(&keys_manager),
 227                                                 network,
 228                                                 expiry_secs.unwrap(),
 229                                                 Arc::clone(&logger),
 230                                         );
 231                                 }
 232                                 "connectpeer" => {
 233                                         let peer_pubkey_and_ip_addr = words.next();
 234                                         if peer_pubkey_and_ip_addr.is_none() {
 235                                                 println!("ERROR: connectpeer requires peer connection info: `connectpeer pubkey@host:port`");
 236                                                 continue;
 237                                         }
 238                                         let (pubkey, peer_addr) =
 239                                                 match parse_peer_info(peer_pubkey_and_ip_addr.unwrap().to_string()) {
 240                                                         Ok(info) => info,
 241                                                         Err(e) => {
 242                                                                 println!("{:?}", e.into_inner().unwrap());
 243                                                                 continue;
 244                                                         }
 245                                                 };
 246                                         if connect_peer_if_necessary(pubkey, peer_addr, peer_manager.clone())
 247                                                 .await
 248                                                 .is_ok()
 249                                         {
 250                                                 println!("SUCCESS: connected to peer {}", pubkey);
 251                                         }
 252                                 }
 253                                 "disconnectpeer" => {
 254                                         let peer_pubkey = words.next();
 255                                         if peer_pubkey.is_none() {
 256                                                 println!("ERROR: disconnectpeer requires peer public key: `disconnectpeer <peer_pubkey>`");
 257                                                 continue;
 258                                         }
 259
 260                                         let peer_pubkey =
 261                                                 match bitcoin::secp256k1::PublicKey::from_str(peer_pubkey.unwrap()) {
 262                                                         Ok(pubkey) => pubkey,
 263                                                         Err(e) => {
 264                                                                 println!("ERROR: {}", e.to_string());
 265                                                                 continue;
 266                                                         }
 267                                                 };
 268
 269                                         if do_disconnect_peer(
 270                                                 peer_pubkey,
 271                                                 peer_manager.clone(),
 272                                                 channel_manager.clone(),
 273                                         )
 274                                         .is_ok()
 275                                         {
 276                                                 println!("SUCCESS: disconnected from peer {}", peer_pubkey);
 277                                         }
 278                                 }
 279                                 "listchannels" => list_channels(&channel_manager, &network_graph),
 280                                 "listpayments" => {
 281                                         list_payments(inbound_payments.clone(), outbound_payments.clone())
 282                                 }
 283                                 "closechannel" => {
 284                                         let channel_id_str = words.next();
 285                                         if channel_id_str.is_none() {
 286                                                 println!("ERROR: closechannel requires a channel ID: `closechannel <channel_id> <peer_pubkey>`");
 287                                                 continue;
 288                                         }
 289                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 290                                         if channel_id_vec.is_none() || channel_id_vec.as_ref().unwrap().len() != 32 {
 291                                                 println!("ERROR: couldn't parse channel_id");
 292                                                 continue;
 293                                         }
 294                                         let mut channel_id = [0; 32];
 295                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 296
 297                                         let peer_pubkey_str = words.next();
 298                                         if peer_pubkey_str.is_none() {
 299                                                 println!("ERROR: closechannel requires a peer pubkey: `closechannel <channel_id> <peer_pubkey>`");
 300                                                 continue;
 301                                         }
 302                                         let peer_pubkey_vec = match hex_utils::to_vec(peer_pubkey_str.unwrap()) {
 303                                                 Some(peer_pubkey_vec) => peer_pubkey_vec,
 304                                                 None => {
 305                                                         println!("ERROR: couldn't parse peer_pubkey");
 306                                                         continue;
 307                                                 }
 308                                         };
 309                                         let peer_pubkey = match PublicKey::from_slice(&peer_pubkey_vec) {
 310                                                 Ok(peer_pubkey) => peer_pubkey,
 311                                                 Err(_) => {
 312                                                         println!("ERROR: couldn't parse peer_pubkey");
 313                                                         continue;
 314                                                 }
 315                                         };
 316
 317                                         close_channel(channel_id, peer_pubkey, channel_manager.clone());
 318                                 }
 319                                 "forceclosechannel" => {
 320                                         let channel_id_str = words.next();
 321                                         if channel_id_str.is_none() {
 322                                                 println!("ERROR: forceclosechannel requires a channel ID: `forceclosechannel <channel_id> <peer_pubkey>`");
 323                                                 continue;
 324                                         }
 325                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 326                                         if channel_id_vec.is_none() || channel_id_vec.as_ref().unwrap().len() != 32 {
 327                                                 println!("ERROR: couldn't parse channel_id");
 328                                                 continue;
 329                                         }
 330                                         let mut channel_id = [0; 32];
 331                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 332
 333                                         let peer_pubkey_str = words.next();
 334                                         if peer_pubkey_str.is_none() {
 335                                                 println!("ERROR: forceclosechannel requires a peer pubkey: `forceclosechannel <channel_id> <peer_pubkey>`");
 336                                                 continue;
 337                                         }
 338                                         let peer_pubkey_vec = match hex_utils::to_vec(peer_pubkey_str.unwrap()) {
 339                                                 Some(peer_pubkey_vec) => peer_pubkey_vec,
 340                                                 None => {
 341                                                         println!("ERROR: couldn't parse peer_pubkey");
 342                                                         continue;
 343                                                 }
 344                                         };
 345                                         let peer_pubkey = match PublicKey::from_slice(&peer_pubkey_vec) {
 346                                                 Ok(peer_pubkey) => peer_pubkey,
 347                                                 Err(_) => {
 348                                                         println!("ERROR: couldn't parse peer_pubkey");
 349                                                         continue;
 350                                                 }
 351                                         };
 352
 353                                         force_close_channel(channel_id, peer_pubkey, channel_manager.clone());
 354                                 }
 355                                 "nodeinfo" => node_info(&channel_manager, &peer_manager),
 356                                 "listpeers" => list_peers(peer_manager.clone()),
 357                                 "signmessage" => {
 358                                         const MSG_STARTPOS: usize = "signmessage".len() + 1;
 359                                         if line.as_bytes().len() <= MSG_STARTPOS {
 360                                                 println!("ERROR: signmsg requires a message");
 361                                                 continue;
 362                                         }
 363                                         println!(
 364                                                 "{:?}",
 365                                                 lightning::util::message_signing::sign(
 366                                                         &line.as_bytes()[MSG_STARTPOS..],
 367                                                         &keys_manager.get_node_secret(Recipient::Node).unwrap()
 368                                                 )
 369                                         );
 370                                 }
 371                                 "sendonionmessage" => {
 372                                         let path_pks_str = words.next();
 373                                         if path_pks_str.is_none() {
 374                                                 println!(
 375                                                         "ERROR: sendonionmessage requires at least one node id for the path"
 376                                                 );
 377                                                 continue;
 378                                         }
 379                                         let mut node_pks = Vec::new();
 380                                         let mut errored = false;
 381                                         for pk_str in path_pks_str.unwrap().split(",") {
 382                                                 let node_pubkey_vec = match hex_utils::to_vec(pk_str) {
 383                                                         Some(peer_pubkey_vec) => peer_pubkey_vec,
 384                                                         None => {
 385                                                                 println!("ERROR: couldn't parse peer_pubkey");
 386                                                                 errored = true;
 387                                                                 break;
 388                                                         }
 389                                                 };
 390                                                 let node_pubkey = match PublicKey::from_slice(&node_pubkey_vec) {
 391                                                         Ok(peer_pubkey) => peer_pubkey,
 392                                                         Err(_) => {
 393                                                                 println!("ERROR: couldn't parse peer_pubkey");
 394                                                                 errored = true;
 395                                                                 break;
 396                                                         }
 397                                                 };
 398                                                 node_pks.push(node_pubkey);
 399                                         }
 400                                         if errored {
 401                                                 continue;
 402                                         }
 403                                         let tlv_type = match words.next().map(|ty_str| ty_str.parse()) {
 404                                                 Some(Ok(ty)) if ty >= 64 => ty,
 405                                                 _ => {
 406                                                         println!("Need an integral message type above 64");
 407                                                         continue;
 408                                                 }
 409                                         };
 410                                         let data = match words.next().map(|s| hex_utils::to_vec(s)) {
 411                                                 Some(Some(data)) => data,
 412                                                 _ => {
 413                                                         println!("Need a hex data string");
 414                                                         continue;
 415                                                 }
 416                                         };
 417                                         let destination_pk = node_pks.pop().unwrap();
 418                                         match onion_messenger.send_onion_message(
 419                                                 &node_pks,
 420                                                 Destination::Node(destination_pk),
 421                                                 OnionMessageContents::Custom(UserOnionMessageContents { tlv_type, data }),
 422                                                 None,
 423                                         ) {
 424                                                 Ok(()) => println!("SUCCESS: forwarded onion message to first hop"),
 425                                                 Err(e) => println!("ERROR: failed to send onion message: {:?}", e),
 426                                         }
 427                                 }
 428                                 "quit" | "exit" => break,
 429                                 _ => println!("Unknown command. See `\"help\" for available commands."),
 430                         }
 431                 }
 432         }
 433 }
 434
 435 fn help() {
 436         let package_version = env!("CARGO_PKG_VERSION");
 437         let package_name = env!("CARGO_PKG_NAME");
 438         println!("\nVERSION:");
 439         println!("  {} v{}", package_name, package_version);
 440         println!("\nUSAGE:");
 441         println!("  Command [arguments]");
 442         println!("\nCOMMANDS:");
 443         println!("  help\tShows a list of commands.");
 444         println!("  quit\tClose the application.");
 445         println!("\n  Channels:");
 446         println!("      openchannel pubkey@host:port <amt_satoshis> [--public]");
 447         println!("      closechannel <channel_id> <peer_pubkey>");
 448         println!("      forceclosechannel <channel_id> <peer_pubkey>");
 449         println!("      listchannels");
 450         println!("\n  Peers:");
 451         println!("      connectpeer pubkey@host:port");
 452         println!("      disconnectpeer <peer_pubkey>");
 453         println!("      listpeers");
 454         println!("\n  Payments:");
 455         println!("      sendpayment <invoice>");
 456         println!("      keysend <dest_pubkey> <amt_msats>");
 457         println!("      listpayments");
 458         println!("\n  Invoices:");
 459         println!("      getinvoice <amt_msats> <expiry_secs>");
 460         println!("\n  Other:");
 461         println!("      signmessage <message>");
 462         println!(
 463                 "      sendonionmessage <node_id_1,node_id_2,..,destination_node_id> <type> <hex_bytes>"
 464         );
 465         println!("      nodeinfo");
 466 }
 467
 468 fn node_info(channel_manager: &Arc<ChannelManager>, peer_manager: &Arc<PeerManager>) {
 469         println!("\t{{");
 470         println!("\t\t node_pubkey: {}", channel_manager.get_our_node_id());
 471         let chans = channel_manager.list_channels();
 472         println!("\t\t num_channels: {}", chans.len());
 473         println!("\t\t num_usable_channels: {}", chans.iter().filter(|c| c.is_usable).count());
 474         let local_balance_msat = chans.iter().map(|c| c.balance_msat).sum::<u64>();
 475         println!("\t\t local_balance_msat: {}", local_balance_msat);
 476         println!("\t\t num_peers: {}", peer_manager.get_peer_node_ids().len());
 477         println!("\t}},");
 478 }
 479
 480 fn list_peers(peer_manager: Arc<PeerManager>) {
 481         println!("\t{{");
 482         for pubkey in peer_manager.get_peer_node_ids() {
 483                 println!("\t\t pubkey: {}", pubkey);
 484         }
 485         println!("\t}},");
 486 }
 487
 488 fn list_channels(channel_manager: &Arc<ChannelManager>, network_graph: &Arc<NetworkGraph>) {
 489         print!("[");
 490         for chan_info in channel_manager.list_channels() {
 491                 println!("");
 492                 println!("\t{{");
 493                 println!("\t\tchannel_id: {},", hex_utils::hex_str(&chan_info.channel_id[..]));
 494                 if let Some(funding_txo) = chan_info.funding_txo {
 495                         println!("\t\tfunding_txid: {},", funding_txo.txid);
 496                 }
 497
 498                 println!(
 499                         "\t\tpeer_pubkey: {},",
 500                         hex_utils::hex_str(&chan_info.counterparty.node_id.serialize())
 501                 );
 502                 if let Some(node_info) = network_graph
 503                         .read_only()
 504                         .nodes()
 505                         .get(&NodeId::from_pubkey(&chan_info.counterparty.node_id))
 506                 {
 507                         if let Some(announcement) = &node_info.announcement_info {
 508                                 println!("\t\tpeer_alias: {}", announcement.alias);
 509                         }
 510                 }
 511
 512                 if let Some(id) = chan_info.short_channel_id {
 513                         println!("\t\tshort_channel_id: {},", id);
 514                 }
 515                 println!("\t\tis_channel_ready: {},", chan_info.is_channel_ready);
 516                 println!("\t\tchannel_value_satoshis: {},", chan_info.channel_value_satoshis);
 517                 println!("\t\tlocal_balance_msat: {},", chan_info.balance_msat);
 518                 if chan_info.is_usable {
 519                         println!("\t\tavailable_balance_for_send_msat: {},", chan_info.outbound_capacity_msat);
 520                         println!("\t\tavailable_balance_for_recv_msat: {},", chan_info.inbound_capacity_msat);
 521                 }
 522                 println!("\t\tchannel_can_send_payments: {},", chan_info.is_usable);
 523                 println!("\t\tpublic: {},", chan_info.is_public);
 524                 println!("\t}},");
 525         }
 526         println!("]");
 527 }
 528
 529 fn list_payments(inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage) {
 530         let inbound = inbound_payments.lock().unwrap();
 531         let outbound = outbound_payments.lock().unwrap();
 532         print!("[");
 533         for (payment_hash, payment_info) in inbound.deref() {
 534                 println!("");
 535                 println!("\t{{");
 536                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 537                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 538                 println!("\t\thtlc_direction: inbound,");
 539                 println!(
 540                         "\t\thtlc_status: {},",
 541                         match payment_info.status {
 542                                 HTLCStatus::Pending => "pending",
 543                                 HTLCStatus::Succeeded => "succeeded",
 544                                 HTLCStatus::Failed => "failed",
 545                         }
 546                 );
 547
 548                 println!("\t}},");
 549         }
 550
 551         for (payment_hash, payment_info) in outbound.deref() {
 552                 println!("");
 553                 println!("\t{{");
 554                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 555                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 556                 println!("\t\thtlc_direction: outbound,");
 557                 println!(
 558                         "\t\thtlc_status: {},",
 559                         match payment_info.status {
 560                                 HTLCStatus::Pending => "pending",
 561                                 HTLCStatus::Succeeded => "succeeded",
 562                                 HTLCStatus::Failed => "failed",
 563                         }
 564                 );
 565
 566                 println!("\t}},");
 567         }
 568         println!("]");
 569 }
 570
 571 pub(crate) async fn connect_peer_if_necessary(
 572         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 573 ) -> Result<(), ()> {
 574         for node_pubkey in peer_manager.get_peer_node_ids() {
 575                 if node_pubkey == pubkey {
 576                         return Ok(());
 577                 }
 578         }
 579         let res = do_connect_peer(pubkey, peer_addr, peer_manager).await;
 580         if res.is_err() {
 581                 println!("ERROR: failed to connect to peer");
 582         }
 583         res
 584 }
 585
 586 pub(crate) async fn do_connect_peer(
 587         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 588 ) -> Result<(), ()> {
 589         match lightning_net_tokio::connect_outbound(Arc::clone(&peer_manager), pubkey, peer_addr).await
 590         {
 591                 Some(connection_closed_future) => {
 592                         let mut connection_closed_future = Box::pin(connection_closed_future);
 593                         loop {
 594                                 match futures::poll!(&mut connection_closed_future) {
 595                                         std::task::Poll::Ready(_) => {
 596                                                 return Err(());
 597                                         }
 598                                         std::task::Poll::Pending => {}
 599                                 }
 600                                 // Avoid blocking the tokio context by sleeping a bit
 601                                 match peer_manager.get_peer_node_ids().iter().find(|id| **id == pubkey) {
 602                                         Some(_) => return Ok(()),
 603                                         None => tokio::time::sleep(Duration::from_millis(10)).await,
 604                                 }
 605                         }
 606                 }
 607                 None => Err(()),
 608         }
 609 }
 610
 611 fn do_disconnect_peer(
 612         pubkey: bitcoin::secp256k1::PublicKey, peer_manager: Arc<PeerManager>,
 613         channel_manager: Arc<ChannelManager>,
 614 ) -> Result<(), ()> {
 615         //check for open channels with peer
 616         for channel in channel_manager.list_channels() {
 617                 if channel.counterparty.node_id == pubkey {
 618                         println!("Error: Node has an active channel with this peer, close any channels first");
 619                         return Err(());
 620                 }
 621         }
 622
 623         //check the pubkey matches a valid connected peer
 624         let peers = peer_manager.get_peer_node_ids();
 625         if !peers.contains(&pubkey) {
 626                 println!("Error: Could not find peer {}", pubkey);
 627                 return Err(());
 628         }
 629
 630         peer_manager.disconnect_by_node_id(pubkey, false);
 631         Ok(())
 632 }
 633
 634 fn open_channel(
 635         peer_pubkey: PublicKey, channel_amt_sat: u64, announced_channel: bool,
 636         channel_manager: Arc<ChannelManager>,
 637 ) -> Result<(), ()> {
 638         let config = UserConfig {
 639                 channel_handshake_limits: ChannelHandshakeLimits {
 640                         // lnd's max to_self_delay is 2016, so we want to be compatible.
 641                         their_to_self_delay: 2016,
 642                         ..Default::default()
 643                 },
 644                 channel_handshake_config: ChannelHandshakeConfig {
 645                         announced_channel,
 646                         ..Default::default()
 647                 },
 648                 ..Default::default()
 649         };
 650
 651         match channel_manager.create_channel(peer_pubkey, channel_amt_sat, 0, 0, Some(config)) {
 652                 Ok(_) => {
 653                         println!("EVENT: initiated channel with peer {}. ", peer_pubkey);
 654                         return Ok(());
 655                 }
 656                 Err(e) => {
 657                         println!("ERROR: failed to open channel: {:?}", e);
 658                         return Err(());
 659                 }
 660         }
 661 }
 662
 663 fn send_payment<E: EventHandler>(
 664         invoice_payer: &InvoicePayer<E>, invoice: &Invoice, payment_storage: PaymentInfoStorage,
 665 ) {
 666         let status = match invoice_payer.pay_invoice(invoice) {
 667                 Ok(_payment_id) => {
 668                         let payee_pubkey = invoice.recover_payee_pub_key();
 669                         let amt_msat = invoice.amount_milli_satoshis().unwrap();
 670                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee_pubkey);
 671                         print!("> ");
 672                         HTLCStatus::Pending
 673                 }
 674                 Err(PaymentError::Invoice(e)) => {
 675                         println!("ERROR: invalid invoice: {}", e);
 676                         print!("> ");
 677                         return;
 678                 }
 679                 Err(PaymentError::Routing(e)) => {
 680                         println!("ERROR: failed to find route: {}", e.err);
 681                         print!("> ");
 682                         return;
 683                 }
 684                 Err(PaymentError::Sending(e)) => {
 685                         println!("ERROR: failed to send payment: {:?}", e);
 686                         print!("> ");
 687                         HTLCStatus::Failed
 688                 }
 689         };
 690         let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
 691         let payment_secret = Some(invoice.payment_secret().clone());
 692
 693         let mut payments = payment_storage.lock().unwrap();
 694         payments.insert(
 695                 payment_hash,
 696                 PaymentInfo {
 697                         preimage: None,
 698                         secret: payment_secret,
 699                         status,
 700                         amt_msat: MillisatAmount(invoice.amount_milli_satoshis()),
 701                 },
 702         );
 703 }
 704
 705 fn keysend<E: EventHandler, K: KeysInterface>(
 706         invoice_payer: &InvoicePayer<E>, payee_pubkey: PublicKey, amt_msat: u64, keys: &K,
 707         payment_storage: PaymentInfoStorage,
 708 ) {
 709         let payment_preimage = keys.get_secure_random_bytes();
 710
 711         let status = match invoice_payer.pay_pubkey(
 712                 payee_pubkey,
 713                 PaymentPreimage(payment_preimage),
 714                 amt_msat,
 715                 40,
 716         ) {
 717                 Ok(_payment_id) => {
 718                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee_pubkey);
 719                         print!("> ");
 720                         HTLCStatus::Pending
 721                 }
 722                 Err(PaymentError::Invoice(e)) => {
 723                         println!("ERROR: invalid payee: {}", e);
 724                         print!("> ");
 725                         return;
 726                 }
 727                 Err(PaymentError::Routing(e)) => {
 728                         println!("ERROR: failed to find route: {}", e.err);
 729                         print!("> ");
 730                         return;
 731                 }
 732                 Err(PaymentError::Sending(e)) => {
 733                         println!("ERROR: failed to send payment: {:?}", e);
 734                         print!("> ");
 735                         HTLCStatus::Failed
 736                 }
 737         };
 738
 739         let mut payments = payment_storage.lock().unwrap();
 740         payments.insert(
 741                 PaymentHash(Sha256::hash(&payment_preimage).into_inner()),
 742                 PaymentInfo {
 743                         preimage: None,
 744                         secret: None,
 745                         status,
 746                         amt_msat: MillisatAmount(Some(amt_msat)),
 747                 },
 748         );
 749 }
 750
 751 fn get_invoice(
 752         amt_msat: u64, payment_storage: PaymentInfoStorage, channel_manager: &ChannelManager,
 753         keys_manager: Arc<KeysManager>, network: Network, expiry_secs: u32,
 754         logger: Arc<disk::FilesystemLogger>,
 755 ) {
 756         let mut payments = payment_storage.lock().unwrap();
 757         let currency = match network {
 758                 Network::Bitcoin => Currency::Bitcoin,
 759                 Network::Testnet => Currency::BitcoinTestnet,
 760                 Network::Regtest => Currency::Regtest,
 761                 Network::Signet => Currency::Signet,
 762         };
 763         let invoice = match utils::create_invoice_from_channelmanager(
 764                 channel_manager,
 765                 keys_manager,
 766                 logger,
 767                 currency,
 768                 Some(amt_msat),
 769                 "ldk-tutorial-node".to_string(),
 770                 expiry_secs,
 771         ) {
 772                 Ok(inv) => {
 773                         println!("SUCCESS: generated invoice: {}", inv);
 774                         inv
 775                 }
 776                 Err(e) => {
 777                         println!("ERROR: failed to create invoice: {:?}", e);
 778                         return;
 779                 }
 780         };
 781
 782         let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
 783         payments.insert(
 784                 payment_hash,
 785                 PaymentInfo {
 786                         preimage: None,
 787                         secret: Some(invoice.payment_secret().clone()),
 788                         status: HTLCStatus::Pending,
 789                         amt_msat: MillisatAmount(Some(amt_msat)),
 790                 },
 791         );
 792 }
 793
 794 fn close_channel(
 795         channel_id: [u8; 32], counterparty_node_id: PublicKey, channel_manager: Arc<ChannelManager>,
 796 ) {
 797         match channel_manager.close_channel(&channel_id, &counterparty_node_id) {
 798                 Ok(()) => println!("EVENT: initiating channel close"),
 799                 Err(e) => println!("ERROR: failed to close channel: {:?}", e),
 800         }
 801 }
 802
 803 fn force_close_channel(
 804         channel_id: [u8; 32], counterparty_node_id: PublicKey, channel_manager: Arc<ChannelManager>,
 805 ) {
 806         match channel_manager.force_close_broadcasting_latest_txn(&channel_id, &counterparty_node_id) {
 807                 Ok(()) => println!("EVENT: initiating channel force-close"),
 808                 Err(e) => println!("ERROR: failed to force-close channel: {:?}", e),
 809         }
 810 }
 811
 812 pub(crate) fn parse_peer_info(
 813         peer_pubkey_and_ip_addr: String,
 814 ) -> Result<(PublicKey, SocketAddr), std::io::Error> {
 815         let mut pubkey_and_addr = peer_pubkey_and_ip_addr.split("@");
 816         let pubkey = pubkey_and_addr.next();
 817         let peer_addr_str = pubkey_and_addr.next();
 818         if peer_addr_str.is_none() {
 819                 return Err(std::io::Error::new(
 820                         std::io::ErrorKind::Other,
 821                         "ERROR: incorrectly formatted peer info. Should be formatted as: `pubkey@host:port`",
 822                 ));
 823         }
 824
 825         let peer_addr = peer_addr_str.unwrap().to_socket_addrs().map(|mut r| r.next());
 826         if peer_addr.is_err() || peer_addr.as_ref().unwrap().is_none() {
 827                 return Err(std::io::Error::new(
 828                         std::io::ErrorKind::Other,
 829                         "ERROR: couldn't parse pubkey@host:port into a socket address",
 830                 ));
 831         }
 832
 833         let pubkey = hex_utils::to_compressed_pubkey(pubkey.unwrap());
 834         if pubkey.is_none() {
 835                 return Err(std::io::Error::new(
 836                         std::io::ErrorKind::Other,
 837                         "ERROR: unable to parse given pubkey for node",
 838                 ));
 839         }
 840
 841         Ok((pubkey.unwrap(), peer_addr.unwrap().unwrap()))
 842 }