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

   1 use crate::disk::{self, INBOUND_PAYMENTS_FNAME, OUTBOUND_PAYMENTS_FNAME};
   2 use crate::hex_utils;
   3 use crate::{
   4         ChannelManager, HTLCStatus, MillisatAmount, NetworkGraph, OnionMessenger, PaymentInfo,
   5         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::ln::channelmanager::{PaymentId, RecipientOnionFields, Retry};
  12 use lightning::ln::msgs::NetAddress;
  13 use lightning::ln::{PaymentHash, PaymentPreimage};
  14 use lightning::onion_message::OnionMessagePath;
  15 use lightning::onion_message::{CustomOnionMessageContents, Destination, OnionMessageContents};
  16 use lightning::routing::gossip::NodeId;
  17 use lightning::routing::router::{PaymentParameters, RouteParameters};
  18 use lightning::sign::{EntropySource, KeysManager};
  19 use lightning::util::config::{ChannelHandshakeConfig, ChannelHandshakeLimits, UserConfig};
  20 use lightning::util::persist::KVStorePersister;
  21 use lightning::util::ser::{Writeable, Writer};
  22 use lightning_invoice::payment::pay_invoice;
  23 use lightning_invoice::{utils, Bolt11Invoice, Currency};
  24 use lightning_persister::FilesystemPersister;
  25 use std::env;
  26 use std::io;
  27 use std::io::Write;
  28 use std::net::{SocketAddr, ToSocketAddrs};
  29 use std::path::Path;
  30 use std::str::FromStr;
  31 use std::sync::{Arc, Mutex};
  32 use std::time::Duration;
  33
  34 pub(crate) struct LdkUserInfo {
  35         pub(crate) bitcoind_rpc_username: String,
  36         pub(crate) bitcoind_rpc_password: String,
  37         pub(crate) bitcoind_rpc_port: u16,
  38         pub(crate) bitcoind_rpc_host: String,
  39         pub(crate) ldk_storage_dir_path: String,
  40         pub(crate) ldk_peer_listening_port: u16,
  41         pub(crate) ldk_announced_listen_addr: Vec<NetAddress>,
  42         pub(crate) ldk_announced_node_name: [u8; 32],
  43         pub(crate) network: Network,
  44 }
  45
  46 struct UserOnionMessageContents {
  47         tlv_type: u64,
  48         data: Vec<u8>,
  49 }
  50
  51 impl CustomOnionMessageContents for UserOnionMessageContents {
  52         fn tlv_type(&self) -> u64 {
  53                 self.tlv_type
  54         }
  55 }
  56
  57 impl Writeable for UserOnionMessageContents {
  58         fn write<W: Writer>(&self, w: &mut W) -> Result<(), std::io::Error> {
  59                 w.write_all(&self.data)
  60         }
  61 }
  62
  63 pub(crate) async fn poll_for_user_input(
  64         peer_manager: Arc<PeerManager>, channel_manager: Arc<ChannelManager>,
  65         keys_manager: Arc<KeysManager>, network_graph: Arc<NetworkGraph>,
  66         onion_messenger: Arc<OnionMessenger>, inbound_payments: Arc<Mutex<PaymentInfoStorage>>,
  67         outbound_payments: Arc<Mutex<PaymentInfoStorage>>, ldk_data_dir: String, network: Network,
  68         logger: Arc<disk::FilesystemLogger>, persister: Arc<FilesystemPersister>,
  69 ) {
  70         println!(
  71                 "LDK startup successful. Enter \"help\" to view available commands. Press Ctrl-D to quit."
  72         );
  73         println!("LDK logs are available at <your-supplied-ldk-data-dir-path>/.ldk/logs");
  74         println!("Local Node ID is {}.", channel_manager.get_our_node_id());
  75         loop {
  76                 print!("> ");
  77                 io::stdout().flush().unwrap(); // Without flushing, the `>` doesn't print
  78                 let mut line = String::new();
  79                 if let Err(e) = io::stdin().read_line(&mut line) {
  80                         break println!("ERROR: {}", e);
  81                 }
  82
  83                 if line.len() == 0 {
  84                         // We hit EOF / Ctrl-D
  85                         break;
  86                 }
  87
  88                 let mut words = line.split_whitespace();
  89                 if let Some(word) = words.next() {
  90                         match word {
  91                                 "help" => help(),
  92                                 "openchannel" => {
  93                                         let peer_pubkey_and_ip_addr = words.next();
  94                                         let channel_value_sat = words.next();
  95                                         if peer_pubkey_and_ip_addr.is_none() || channel_value_sat.is_none() {
  96                                                 println!("ERROR: openchannel has 2 required arguments: `openchannel pubkey@host:port channel_amt_satoshis` [--public] [--with-anchors]");
  97                                                 continue;
  98                                         }
  99                                         let peer_pubkey_and_ip_addr = peer_pubkey_and_ip_addr.unwrap();
 100                                         let (pubkey, peer_addr) =
 101                                                 match parse_peer_info(peer_pubkey_and_ip_addr.to_string()) {
 102                                                         Ok(info) => info,
 103                                                         Err(e) => {
 104                                                                 println!("{:?}", e.into_inner().unwrap());
 105                                                                 continue;
 106                                                         }
 107                                                 };
 108
 109                                         let chan_amt_sat: Result<u64, _> = channel_value_sat.unwrap().parse();
 110                                         if chan_amt_sat.is_err() {
 111                                                 println!("ERROR: channel amount must be a number");
 112                                                 continue;
 113                                         }
 114
 115                                         if connect_peer_if_necessary(pubkey, peer_addr, peer_manager.clone())
 116                                                 .await
 117                                                 .is_err()
 118                                         {
 119                                                 continue;
 120                                         };
 121
 122                                         let (mut announce_channel, mut with_anchors) = (false, false);
 123                                         while let Some(word) = words.next() {
 124                                                 match word {
 125                                                         "--public" | "--public=true" => announce_channel = true,
 126                                                         "--public=false" => announce_channel = false,
 127                                                         "--with-anchors" | "--with-anchors=true" => with_anchors = true,
 128                                                         "--with-anchors=false" => with_anchors = false,
 129                                                         _ => {
 130                                                                 println!("ERROR: invalid boolean flag format. Valid formats: `--option`, `--option=true` `--option=false`");
 131                                                                 continue;
 132                                                         }
 133                                                 }
 134                                         }
 135
 136                                         if open_channel(
 137                                                 pubkey,
 138                                                 chan_amt_sat.unwrap(),
 139                                                 announce_channel,
 140                                                 with_anchors,
 141                                                 channel_manager.clone(),
 142                                         )
 143                                         .is_ok()
 144                                         {
 145                                                 let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone());
 146                                                 let _ = disk::persist_channel_peer(
 147                                                         Path::new(&peer_data_path),
 148                                                         peer_pubkey_and_ip_addr,
 149                                                 );
 150                                         }
 151                                 }
 152                                 "sendpayment" => {
 153                                         let invoice_str = words.next();
 154                                         if invoice_str.is_none() {
 155                                                 println!("ERROR: sendpayment requires an invoice: `sendpayment <invoice>`");
 156                                                 continue;
 157                                         }
 158
 159                                         let invoice = match Bolt11Invoice::from_str(invoice_str.unwrap()) {
 160                                                 Ok(inv) => inv,
 161                                                 Err(e) => {
 162                                                         println!("ERROR: invalid invoice: {:?}", e);
 163                                                         continue;
 164                                                 }
 165                                         };
 166
 167                                         send_payment(
 168                                                 &channel_manager,
 169                                                 &invoice,
 170                                                 &mut outbound_payments.lock().unwrap(),
 171                                                 persister.clone(),
 172                                         );
 173                                 }
 174                                 "keysend" => {
 175                                         let dest_pubkey = match words.next() {
 176                                                 Some(dest) => match hex_utils::to_compressed_pubkey(dest) {
 177                                                         Some(pk) => pk,
 178                                                         None => {
 179                                                                 println!("ERROR: couldn't parse destination pubkey");
 180                                                                 continue;
 181                                                         }
 182                                                 },
 183                                                 None => {
 184                                                         println!("ERROR: keysend requires a destination pubkey: `keysend <dest_pubkey> <amt_msat>`");
 185                                                         continue;
 186                                                 }
 187                                         };
 188                                         let amt_msat_str = match words.next() {
 189                                                 Some(amt) => amt,
 190                                                 None => {
 191                                                         println!("ERROR: keysend requires an amount in millisatoshis: `keysend <dest_pubkey> <amt_msat>`");
 192                                                         continue;
 193                                                 }
 194                                         };
 195                                         let amt_msat: u64 = match amt_msat_str.parse() {
 196                                                 Ok(amt) => amt,
 197                                                 Err(e) => {
 198                                                         println!("ERROR: couldn't parse amount_msat: {}", e);
 199                                                         continue;
 200                                                 }
 201                                         };
 202                                         keysend(
 203                                                 &channel_manager,
 204                                                 dest_pubkey,
 205                                                 amt_msat,
 206                                                 &*keys_manager,
 207                                                 &mut outbound_payments.lock().unwrap(),
 208                                                 persister.clone(),
 209                                         );
 210                                 }
 211                                 "getinvoice" => {
 212                                         let amt_str = words.next();
 213                                         if amt_str.is_none() {
 214                                                 println!("ERROR: getinvoice requires an amount in millisatoshis");
 215                                                 continue;
 216                                         }
 217
 218                                         let amt_msat: Result<u64, _> = amt_str.unwrap().parse();
 219                                         if amt_msat.is_err() {
 220                                                 println!("ERROR: getinvoice provided payment amount was not a number");
 221                                                 continue;
 222                                         }
 223
 224                                         let expiry_secs_str = words.next();
 225                                         if expiry_secs_str.is_none() {
 226                                                 println!("ERROR: getinvoice requires an expiry in seconds");
 227                                                 continue;
 228                                         }
 229
 230                                         let expiry_secs: Result<u32, _> = expiry_secs_str.unwrap().parse();
 231                                         if expiry_secs.is_err() {
 232                                                 println!("ERROR: getinvoice provided expiry was not a number");
 233                                                 continue;
 234                                         }
 235
 236                                         let mut inbound_payments = inbound_payments.lock().unwrap();
 237                                         get_invoice(
 238                                                 amt_msat.unwrap(),
 239                                                 &mut inbound_payments,
 240                                                 &channel_manager,
 241                                                 Arc::clone(&keys_manager),
 242                                                 network,
 243                                                 expiry_secs.unwrap(),
 244                                                 Arc::clone(&logger),
 245                                         );
 246                                         persister.persist(INBOUND_PAYMENTS_FNAME, &*inbound_payments).unwrap();
 247                                 }
 248                                 "connectpeer" => {
 249                                         let peer_pubkey_and_ip_addr = words.next();
 250                                         if peer_pubkey_and_ip_addr.is_none() {
 251                                                 println!("ERROR: connectpeer requires peer connection info: `connectpeer pubkey@host:port`");
 252                                                 continue;
 253                                         }
 254                                         let (pubkey, peer_addr) =
 255                                                 match parse_peer_info(peer_pubkey_and_ip_addr.unwrap().to_string()) {
 256                                                         Ok(info) => info,
 257                                                         Err(e) => {
 258                                                                 println!("{:?}", e.into_inner().unwrap());
 259                                                                 continue;
 260                                                         }
 261                                                 };
 262                                         if connect_peer_if_necessary(pubkey, peer_addr, peer_manager.clone())
 263                                                 .await
 264                                                 .is_ok()
 265                                         {
 266                                                 println!("SUCCESS: connected to peer {}", pubkey);
 267                                         }
 268                                 }
 269                                 "disconnectpeer" => {
 270                                         let peer_pubkey = words.next();
 271                                         if peer_pubkey.is_none() {
 272                                                 println!("ERROR: disconnectpeer requires peer public key: `disconnectpeer <peer_pubkey>`");
 273                                                 continue;
 274                                         }
 275
 276                                         let peer_pubkey =
 277                                                 match bitcoin::secp256k1::PublicKey::from_str(peer_pubkey.unwrap()) {
 278                                                         Ok(pubkey) => pubkey,
 279                                                         Err(e) => {
 280                                                                 println!("ERROR: {}", e.to_string());
 281                                                                 continue;
 282                                                         }
 283                                                 };
 284
 285                                         if do_disconnect_peer(
 286                                                 peer_pubkey,
 287                                                 peer_manager.clone(),
 288                                                 channel_manager.clone(),
 289                                         )
 290                                         .is_ok()
 291                                         {
 292                                                 println!("SUCCESS: disconnected from peer {}", peer_pubkey);
 293                                         }
 294                                 }
 295                                 "listchannels" => list_channels(&channel_manager, &network_graph),
 296                                 "listpayments" => list_payments(
 297                                         &inbound_payments.lock().unwrap(),
 298                                         &outbound_payments.lock().unwrap(),
 299                                 ),
 300                                 "closechannel" => {
 301                                         let channel_id_str = words.next();
 302                                         if channel_id_str.is_none() {
 303                                                 println!("ERROR: closechannel requires a channel ID: `closechannel <channel_id> <peer_pubkey>`");
 304                                                 continue;
 305                                         }
 306                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 307                                         if channel_id_vec.is_none() || channel_id_vec.as_ref().unwrap().len() != 32 {
 308                                                 println!("ERROR: couldn't parse channel_id");
 309                                                 continue;
 310                                         }
 311                                         let mut channel_id = [0; 32];
 312                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 313
 314                                         let peer_pubkey_str = words.next();
 315                                         if peer_pubkey_str.is_none() {
 316                                                 println!("ERROR: closechannel requires a peer pubkey: `closechannel <channel_id> <peer_pubkey>`");
 317                                                 continue;
 318                                         }
 319                                         let peer_pubkey_vec = match hex_utils::to_vec(peer_pubkey_str.unwrap()) {
 320                                                 Some(peer_pubkey_vec) => peer_pubkey_vec,
 321                                                 None => {
 322                                                         println!("ERROR: couldn't parse peer_pubkey");
 323                                                         continue;
 324                                                 }
 325                                         };
 326                                         let peer_pubkey = match PublicKey::from_slice(&peer_pubkey_vec) {
 327                                                 Ok(peer_pubkey) => peer_pubkey,
 328                                                 Err(_) => {
 329                                                         println!("ERROR: couldn't parse peer_pubkey");
 330                                                         continue;
 331                                                 }
 332                                         };
 333
 334                                         close_channel(channel_id, peer_pubkey, channel_manager.clone());
 335                                 }
 336                                 "forceclosechannel" => {
 337                                         let channel_id_str = words.next();
 338                                         if channel_id_str.is_none() {
 339                                                 println!("ERROR: forceclosechannel requires a channel ID: `forceclosechannel <channel_id> <peer_pubkey>`");
 340                                                 continue;
 341                                         }
 342                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 343                                         if channel_id_vec.is_none() || channel_id_vec.as_ref().unwrap().len() != 32 {
 344                                                 println!("ERROR: couldn't parse channel_id");
 345                                                 continue;
 346                                         }
 347                                         let mut channel_id = [0; 32];
 348                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 349
 350                                         let peer_pubkey_str = words.next();
 351                                         if peer_pubkey_str.is_none() {
 352                                                 println!("ERROR: forceclosechannel requires a peer pubkey: `forceclosechannel <channel_id> <peer_pubkey>`");
 353                                                 continue;
 354                                         }
 355                                         let peer_pubkey_vec = match hex_utils::to_vec(peer_pubkey_str.unwrap()) {
 356                                                 Some(peer_pubkey_vec) => peer_pubkey_vec,
 357                                                 None => {
 358                                                         println!("ERROR: couldn't parse peer_pubkey");
 359                                                         continue;
 360                                                 }
 361                                         };
 362                                         let peer_pubkey = match PublicKey::from_slice(&peer_pubkey_vec) {
 363                                                 Ok(peer_pubkey) => peer_pubkey,
 364                                                 Err(_) => {
 365                                                         println!("ERROR: couldn't parse peer_pubkey");
 366                                                         continue;
 367                                                 }
 368                                         };
 369
 370                                         force_close_channel(channel_id, peer_pubkey, channel_manager.clone());
 371                                 }
 372                                 "nodeinfo" => node_info(&channel_manager, &peer_manager),
 373                                 "listpeers" => list_peers(peer_manager.clone()),
 374                                 "signmessage" => {
 375                                         const MSG_STARTPOS: usize = "signmessage".len() + 1;
 376                                         if line.trim().as_bytes().len() <= MSG_STARTPOS {
 377                                                 println!("ERROR: signmsg requires a message");
 378                                                 continue;
 379                                         }
 380                                         println!(
 381                                                 "{:?}",
 382                                                 lightning::util::message_signing::sign(
 383                                                         &line.trim().as_bytes()[MSG_STARTPOS..],
 384                                                         &keys_manager.get_node_secret_key()
 385                                                 )
 386                                         );
 387                                 }
 388                                 "sendonionmessage" => {
 389                                         let path_pks_str = words.next();
 390                                         if path_pks_str.is_none() {
 391                                                 println!(
 392                                                         "ERROR: sendonionmessage requires at least one node id for the path"
 393                                                 );
 394                                                 continue;
 395                                         }
 396                                         let mut intermediate_nodes = Vec::new();
 397                                         let mut errored = false;
 398                                         for pk_str in path_pks_str.unwrap().split(",") {
 399                                                 let node_pubkey_vec = match hex_utils::to_vec(pk_str) {
 400                                                         Some(peer_pubkey_vec) => peer_pubkey_vec,
 401                                                         None => {
 402                                                                 println!("ERROR: couldn't parse peer_pubkey");
 403                                                                 errored = true;
 404                                                                 break;
 405                                                         }
 406                                                 };
 407                                                 let node_pubkey = match PublicKey::from_slice(&node_pubkey_vec) {
 408                                                         Ok(peer_pubkey) => peer_pubkey,
 409                                                         Err(_) => {
 410                                                                 println!("ERROR: couldn't parse peer_pubkey");
 411                                                                 errored = true;
 412                                                                 break;
 413                                                         }
 414                                                 };
 415                                                 intermediate_nodes.push(node_pubkey);
 416                                         }
 417                                         if errored {
 418                                                 continue;
 419                                         }
 420                                         let tlv_type = match words.next().map(|ty_str| ty_str.parse()) {
 421                                                 Some(Ok(ty)) if ty >= 64 => ty,
 422                                                 _ => {
 423                                                         println!("Need an integral message type above 64");
 424                                                         continue;
 425                                                 }
 426                                         };
 427                                         let data = match words.next().map(|s| hex_utils::to_vec(s)) {
 428                                                 Some(Some(data)) => data,
 429                                                 _ => {
 430                                                         println!("Need a hex data string");
 431                                                         continue;
 432                                                 }
 433                                         };
 434                                         let destination = Destination::Node(intermediate_nodes.pop().unwrap());
 435                                         let message_path = OnionMessagePath { intermediate_nodes, destination };
 436                                         match onion_messenger.send_onion_message(
 437                                                 message_path,
 438                                                 OnionMessageContents::Custom(UserOnionMessageContents { tlv_type, data }),
 439                                                 None,
 440                                         ) {
 441                                                 Ok(()) => println!("SUCCESS: forwarded onion message to first hop"),
 442                                                 Err(e) => println!("ERROR: failed to send onion message: {:?}", e),
 443                                         }
 444                                 }
 445                                 "quit" | "exit" => break,
 446                                 _ => println!("Unknown command. See `\"help\" for available commands."),
 447                         }
 448                 }
 449         }
 450 }
 451
 452 fn help() {
 453         let package_version = env!("CARGO_PKG_VERSION");
 454         let package_name = env!("CARGO_PKG_NAME");
 455         println!("\nVERSION:");
 456         println!("  {} v{}", package_name, package_version);
 457         println!("\nUSAGE:");
 458         println!("  Command [arguments]");
 459         println!("\nCOMMANDS:");
 460         println!("  help\tShows a list of commands.");
 461         println!("  quit\tClose the application.");
 462         println!("\n  Channels:");
 463         println!("      openchannel pubkey@host:port <amt_satoshis> [--public] [--with-anchors]");
 464         println!("      closechannel <channel_id> <peer_pubkey>");
 465         println!("      forceclosechannel <channel_id> <peer_pubkey>");
 466         println!("      listchannels");
 467         println!("\n  Peers:");
 468         println!("      connectpeer pubkey@host:port");
 469         println!("      disconnectpeer <peer_pubkey>");
 470         println!("      listpeers");
 471         println!("\n  Payments:");
 472         println!("      sendpayment <invoice>");
 473         println!("      keysend <dest_pubkey> <amt_msats>");
 474         println!("      listpayments");
 475         println!("\n  Invoices:");
 476         println!("      getinvoice <amt_msats> <expiry_secs>");
 477         println!("\n  Other:");
 478         println!("      signmessage <message>");
 479         println!(
 480                 "      sendonionmessage <node_id_1,node_id_2,..,destination_node_id> <type> <hex_bytes>"
 481         );
 482         println!("      nodeinfo");
 483 }
 484
 485 fn node_info(channel_manager: &Arc<ChannelManager>, peer_manager: &Arc<PeerManager>) {
 486         println!("\t{{");
 487         println!("\t\t node_pubkey: {}", channel_manager.get_our_node_id());
 488         let chans = channel_manager.list_channels();
 489         println!("\t\t num_channels: {}", chans.len());
 490         println!("\t\t num_usable_channels: {}", chans.iter().filter(|c| c.is_usable).count());
 491         let local_balance_msat = chans.iter().map(|c| c.balance_msat).sum::<u64>();
 492         println!("\t\t local_balance_msat: {}", local_balance_msat);
 493         println!("\t\t num_peers: {}", peer_manager.get_peer_node_ids().len());
 494         println!("\t}},");
 495 }
 496
 497 fn list_peers(peer_manager: Arc<PeerManager>) {
 498         println!("\t{{");
 499         for (pubkey, _) in peer_manager.get_peer_node_ids() {
 500                 println!("\t\t pubkey: {}", pubkey);
 501         }
 502         println!("\t}},");
 503 }
 504
 505 fn list_channels(channel_manager: &Arc<ChannelManager>, network_graph: &Arc<NetworkGraph>) {
 506         print!("[");
 507         for chan_info in channel_manager.list_channels() {
 508                 println!("");
 509                 println!("\t{{");
 510                 println!("\t\tchannel_id: {},", hex_utils::hex_str(&chan_info.channel_id[..]));
 511                 if let Some(funding_txo) = chan_info.funding_txo {
 512                         println!("\t\tfunding_txid: {},", funding_txo.txid);
 513                 }
 514
 515                 println!(
 516                         "\t\tpeer_pubkey: {},",
 517                         hex_utils::hex_str(&chan_info.counterparty.node_id.serialize())
 518                 );
 519                 if let Some(node_info) = network_graph
 520                         .read_only()
 521                         .nodes()
 522                         .get(&NodeId::from_pubkey(&chan_info.counterparty.node_id))
 523                 {
 524                         if let Some(announcement) = &node_info.announcement_info {
 525                                 println!("\t\tpeer_alias: {}", announcement.alias);
 526                         }
 527                 }
 528
 529                 if let Some(id) = chan_info.short_channel_id {
 530                         println!("\t\tshort_channel_id: {},", id);
 531                 }
 532                 println!("\t\tis_channel_ready: {},", chan_info.is_channel_ready);
 533                 println!("\t\tchannel_value_satoshis: {},", chan_info.channel_value_satoshis);
 534                 println!("\t\tlocal_balance_msat: {},", chan_info.balance_msat);
 535                 if chan_info.is_usable {
 536                         println!("\t\tavailable_balance_for_send_msat: {},", chan_info.outbound_capacity_msat);
 537                         println!("\t\tavailable_balance_for_recv_msat: {},", chan_info.inbound_capacity_msat);
 538                 }
 539                 println!("\t\tchannel_can_send_payments: {},", chan_info.is_usable);
 540                 println!("\t\tpublic: {},", chan_info.is_public);
 541                 println!("\t}},");
 542         }
 543         println!("]");
 544 }
 545
 546 fn list_payments(inbound_payments: &PaymentInfoStorage, outbound_payments: &PaymentInfoStorage) {
 547         print!("[");
 548         for (payment_hash, payment_info) in &inbound_payments.payments {
 549                 println!("");
 550                 println!("\t{{");
 551                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 552                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 553                 println!("\t\thtlc_direction: inbound,");
 554                 println!(
 555                         "\t\thtlc_status: {},",
 556                         match payment_info.status {
 557                                 HTLCStatus::Pending => "pending",
 558                                 HTLCStatus::Succeeded => "succeeded",
 559                                 HTLCStatus::Failed => "failed",
 560                         }
 561                 );
 562
 563                 println!("\t}},");
 564         }
 565
 566         for (payment_hash, payment_info) in &outbound_payments.payments {
 567                 println!("");
 568                 println!("\t{{");
 569                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 570                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 571                 println!("\t\thtlc_direction: outbound,");
 572                 println!(
 573                         "\t\thtlc_status: {},",
 574                         match payment_info.status {
 575                                 HTLCStatus::Pending => "pending",
 576                                 HTLCStatus::Succeeded => "succeeded",
 577                                 HTLCStatus::Failed => "failed",
 578                         }
 579                 );
 580
 581                 println!("\t}},");
 582         }
 583         println!("]");
 584 }
 585
 586 pub(crate) async fn connect_peer_if_necessary(
 587         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 588 ) -> Result<(), ()> {
 589         for (node_pubkey, _) in peer_manager.get_peer_node_ids() {
 590                 if node_pubkey == pubkey {
 591                         return Ok(());
 592                 }
 593         }
 594         let res = do_connect_peer(pubkey, peer_addr, peer_manager).await;
 595         if res.is_err() {
 596                 println!("ERROR: failed to connect to peer");
 597         }
 598         res
 599 }
 600
 601 pub(crate) async fn do_connect_peer(
 602         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 603 ) -> Result<(), ()> {
 604         match lightning_net_tokio::connect_outbound(Arc::clone(&peer_manager), pubkey, peer_addr).await
 605         {
 606                 Some(connection_closed_future) => {
 607                         let mut connection_closed_future = Box::pin(connection_closed_future);
 608                         loop {
 609                                 tokio::select! {
 610                                         _ = &mut connection_closed_future => return Err(()),
 611                                         _ = tokio::time::sleep(Duration::from_millis(10)) => {},
 612                                 };
 613                                 if peer_manager.get_peer_node_ids().iter().find(|(id, _)| *id == pubkey).is_some() {
 614                                         return Ok(());
 615                                 }
 616                         }
 617                 }
 618                 None => Err(()),
 619         }
 620 }
 621
 622 fn do_disconnect_peer(
 623         pubkey: bitcoin::secp256k1::PublicKey, peer_manager: Arc<PeerManager>,
 624         channel_manager: Arc<ChannelManager>,
 625 ) -> Result<(), ()> {
 626         //check for open channels with peer
 627         for channel in channel_manager.list_channels() {
 628                 if channel.counterparty.node_id == pubkey {
 629                         println!("Error: Node has an active channel with this peer, close any channels first");
 630                         return Err(());
 631                 }
 632         }
 633
 634         //check the pubkey matches a valid connected peer
 635         let peers = peer_manager.get_peer_node_ids();
 636         if !peers.iter().any(|(pk, _)| &pubkey == pk) {
 637                 println!("Error: Could not find peer {}", pubkey);
 638                 return Err(());
 639         }
 640
 641         peer_manager.disconnect_by_node_id(pubkey);
 642         Ok(())
 643 }
 644
 645 fn open_channel(
 646         peer_pubkey: PublicKey, channel_amt_sat: u64, announced_channel: bool, with_anchors: bool,
 647         channel_manager: Arc<ChannelManager>,
 648 ) -> Result<(), ()> {
 649         let config = UserConfig {
 650                 channel_handshake_limits: ChannelHandshakeLimits {
 651                         // lnd's max to_self_delay is 2016, so we want to be compatible.
 652                         their_to_self_delay: 2016,
 653                         ..Default::default()
 654                 },
 655                 channel_handshake_config: ChannelHandshakeConfig {
 656                         announced_channel,
 657                         negotiate_anchors_zero_fee_htlc_tx: with_anchors,
 658                         ..Default::default()
 659                 },
 660                 ..Default::default()
 661         };
 662
 663         match channel_manager.create_channel(peer_pubkey, channel_amt_sat, 0, 0, Some(config)) {
 664                 Ok(_) => {
 665                         println!("EVENT: initiated channel with peer {}. ", peer_pubkey);
 666                         return Ok(());
 667                 }
 668                 Err(e) => {
 669                         println!("ERROR: failed to open channel: {:?}", e);
 670                         return Err(());
 671                 }
 672         }
 673 }
 674
 675 fn send_payment(
 676         channel_manager: &ChannelManager, invoice: &Bolt11Invoice,
 677         outbound_payments: &mut PaymentInfoStorage, persister: Arc<FilesystemPersister>,
 678 ) {
 679         let payment_hash = PaymentHash((*invoice.payment_hash()).into_inner());
 680         let payment_secret = Some(*invoice.payment_secret());
 681         outbound_payments.payments.insert(
 682                 payment_hash,
 683                 PaymentInfo {
 684                         preimage: None,
 685                         secret: payment_secret,
 686                         status: HTLCStatus::Pending,
 687                         amt_msat: MillisatAmount(invoice.amount_milli_satoshis()),
 688                 },
 689         );
 690         persister.persist(OUTBOUND_PAYMENTS_FNAME, &*outbound_payments).unwrap();
 691         match pay_invoice(invoice, Retry::Timeout(Duration::from_secs(10)), channel_manager) {
 692                 Ok(_payment_id) => {
 693                         let payee_pubkey = invoice.recover_payee_pub_key();
 694                         let amt_msat = invoice.amount_milli_satoshis().unwrap();
 695                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee_pubkey);
 696                         print!("> ");
 697                 }
 698                 Err(e) => {
 699                         println!("ERROR: failed to send payment: {:?}", e);
 700                         print!("> ");
 701                         outbound_payments.payments.get_mut(&payment_hash).unwrap().status = HTLCStatus::Failed;
 702                         persister.persist(OUTBOUND_PAYMENTS_FNAME, &*outbound_payments).unwrap();
 703                 }
 704         };
 705 }
 706
 707 fn keysend<E: EntropySource>(
 708         channel_manager: &ChannelManager, payee_pubkey: PublicKey, amt_msat: u64, entropy_source: &E,
 709         outbound_payments: &mut PaymentInfoStorage, persister: Arc<FilesystemPersister>,
 710 ) {
 711         let payment_preimage = PaymentPreimage(entropy_source.get_secure_random_bytes());
 712         let payment_hash = PaymentHash(Sha256::hash(&payment_preimage.0[..]).into_inner());
 713
 714         let route_params = RouteParameters {
 715                 payment_params: PaymentParameters::for_keysend(payee_pubkey, 40, false),
 716                 final_value_msat: amt_msat,
 717         };
 718         outbound_payments.payments.insert(
 719                 payment_hash,
 720                 PaymentInfo {
 721                         preimage: None,
 722                         secret: None,
 723                         status: HTLCStatus::Pending,
 724                         amt_msat: MillisatAmount(Some(amt_msat)),
 725                 },
 726         );
 727         persister.persist(OUTBOUND_PAYMENTS_FNAME, &*outbound_payments).unwrap();
 728         match channel_manager.send_spontaneous_payment_with_retry(
 729                 Some(payment_preimage),
 730                 RecipientOnionFields::spontaneous_empty(),
 731                 PaymentId(payment_hash.0),
 732                 route_params,
 733                 Retry::Timeout(Duration::from_secs(10)),
 734         ) {
 735                 Ok(_payment_hash) => {
 736                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee_pubkey);
 737                         print!("> ");
 738                 }
 739                 Err(e) => {
 740                         println!("ERROR: failed to send payment: {:?}", e);
 741                         print!("> ");
 742                         outbound_payments.payments.get_mut(&payment_hash).unwrap().status = HTLCStatus::Failed;
 743                         persister.persist(OUTBOUND_PAYMENTS_FNAME, &*outbound_payments).unwrap();
 744                 }
 745         };
 746 }
 747
 748 fn get_invoice(
 749         amt_msat: u64, inbound_payments: &mut PaymentInfoStorage, channel_manager: &ChannelManager,
 750         keys_manager: Arc<KeysManager>, network: Network, expiry_secs: u32,
 751         logger: Arc<disk::FilesystemLogger>,
 752 ) {
 753         let currency = match network {
 754                 Network::Bitcoin => Currency::Bitcoin,
 755                 Network::Testnet => Currency::BitcoinTestnet,
 756                 Network::Regtest => Currency::Regtest,
 757                 Network::Signet => Currency::Signet,
 758         };
 759         let invoice = match utils::create_invoice_from_channelmanager(
 760                 channel_manager,
 761                 keys_manager,
 762                 logger,
 763                 currency,
 764                 Some(amt_msat),
 765                 "ldk-tutorial-node".to_string(),
 766                 expiry_secs,
 767                 None,
 768         ) {
 769                 Ok(inv) => {
 770                         println!("SUCCESS: generated invoice: {}", inv);
 771                         inv
 772                 }
 773                 Err(e) => {
 774                         println!("ERROR: failed to create invoice: {:?}", e);
 775                         return;
 776                 }
 777         };
 778
 779         let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
 780         inbound_payments.payments.insert(
 781                 payment_hash,
 782                 PaymentInfo {
 783                         preimage: None,
 784                         secret: Some(invoice.payment_secret().clone()),
 785                         status: HTLCStatus::Pending,
 786                         amt_msat: MillisatAmount(Some(amt_msat)),
 787                 },
 788         );
 789 }
 790
 791 fn close_channel(
 792         channel_id: [u8; 32], counterparty_node_id: PublicKey, channel_manager: Arc<ChannelManager>,
 793 ) {
 794         match channel_manager.close_channel(&channel_id, &counterparty_node_id) {
 795                 Ok(()) => println!("EVENT: initiating channel close"),
 796                 Err(e) => println!("ERROR: failed to close channel: {:?}", e),
 797         }
 798 }
 799
 800 fn force_close_channel(
 801         channel_id: [u8; 32], counterparty_node_id: PublicKey, channel_manager: Arc<ChannelManager>,
 802 ) {
 803         match channel_manager.force_close_broadcasting_latest_txn(&channel_id, &counterparty_node_id) {
 804                 Ok(()) => println!("EVENT: initiating channel force-close"),
 805                 Err(e) => println!("ERROR: failed to force-close channel: {:?}", e),
 806         }
 807 }
 808
 809 pub(crate) fn parse_peer_info(
 810         peer_pubkey_and_ip_addr: String,
 811 ) -> Result<(PublicKey, SocketAddr), std::io::Error> {
 812         let mut pubkey_and_addr = peer_pubkey_and_ip_addr.split("@");
 813         let pubkey = pubkey_and_addr.next();
 814         let peer_addr_str = pubkey_and_addr.next();
 815         if peer_addr_str.is_none() {
 816                 return Err(std::io::Error::new(
 817                         std::io::ErrorKind::Other,
 818                         "ERROR: incorrectly formatted peer info. Should be formatted as: `pubkey@host:port`",
 819                 ));
 820         }
 821
 822         let peer_addr = peer_addr_str.unwrap().to_socket_addrs().map(|mut r| r.next());
 823         if peer_addr.is_err() || peer_addr.as_ref().unwrap().is_none() {
 824                 return Err(std::io::Error::new(
 825                         std::io::ErrorKind::Other,
 826                         "ERROR: couldn't parse pubkey@host:port into a socket address",
 827                 ));
 828         }
 829
 830         let pubkey = hex_utils::to_compressed_pubkey(pubkey.unwrap());
 831         if pubkey.is_none() {
 832                 return Err(std::io::Error::new(
 833                         std::io::ErrorKind::Other,
 834                         "ERROR: unable to parse given pubkey for node",
 835                 ));
 836         }
 837
 838         Ok((pubkey.unwrap(), peer_addr.unwrap().unwrap()))
 839 }