_ 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) 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 tokio::runtime::Handle::current()
 116                                                 .block_on(connect_peer_if_necessary(
 117                                                         pubkey,
 118                                                         peer_addr,
 119                                                         peer_manager.clone(),
 120                                                 ))
 121                                                 .is_err()
 122                                         {
 123                                                 continue;
 124                                         };
 125
 126                                         let (mut announce_channel, mut with_anchors) = (false, false);
 127                                         while let Some(word) = words.next() {
 128                                                 match word {
 129                                                         "--public" | "--public=true" => announce_channel = true,
 130                                                         "--public=false" => announce_channel = false,
 131                                                         "--with-anchors" | "--with-anchors=true" => with_anchors = true,
 132                                                         "--with-anchors=false" => with_anchors = false,
 133                                                         _ => {
 134                                                                 println!("ERROR: invalid boolean flag format. Valid formats: `--option`, `--option=true` `--option=false`");
 135                                                                 continue;
 136                                                         }
 137                                                 }
 138                                         }
 139
 140                                         if open_channel(
 141                                                 pubkey,
 142                                                 chan_amt_sat.unwrap(),
 143                                                 announce_channel,
 144                                                 with_anchors,
 145                                                 channel_manager.clone(),
 146                                         )
 147                                         .is_ok()
 148                                         {
 149                                                 let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone());
 150                                                 let _ = disk::persist_channel_peer(
 151                                                         Path::new(&peer_data_path),
 152                                                         peer_pubkey_and_ip_addr,
 153                                                 );
 154                                         }
 155                                 }
 156                                 "sendpayment" => {
 157                                         let invoice_str = words.next();
 158                                         if invoice_str.is_none() {
 159                                                 println!("ERROR: sendpayment requires an invoice: `sendpayment <invoice>`");
 160                                                 continue;
 161                                         }
 162
 163                                         let invoice = match Bolt11Invoice::from_str(invoice_str.unwrap()) {
 164                                                 Ok(inv) => inv,
 165                                                 Err(e) => {
 166                                                         println!("ERROR: invalid invoice: {:?}", e);
 167                                                         continue;
 168                                                 }
 169                                         };
 170
 171                                         send_payment(
 172                                                 &channel_manager,
 173                                                 &invoice,
 174                                                 &mut outbound_payments.lock().unwrap(),
 175                                                 persister.clone(),
 176                                         );
 177                                 }
 178                                 "keysend" => {
 179                                         let dest_pubkey = match words.next() {
 180                                                 Some(dest) => match hex_utils::to_compressed_pubkey(dest) {
 181                                                         Some(pk) => pk,
 182                                                         None => {
 183                                                                 println!("ERROR: couldn't parse destination pubkey");
 184                                                                 continue;
 185                                                         }
 186                                                 },
 187                                                 None => {
 188                                                         println!("ERROR: keysend requires a destination pubkey: `keysend <dest_pubkey> <amt_msat>`");
 189                                                         continue;
 190                                                 }
 191                                         };
 192                                         let amt_msat_str = match words.next() {
 193                                                 Some(amt) => amt,
 194                                                 None => {
 195                                                         println!("ERROR: keysend requires an amount in millisatoshis: `keysend <dest_pubkey> <amt_msat>`");
 196                                                         continue;
 197                                                 }
 198                                         };
 199                                         let amt_msat: u64 = match amt_msat_str.parse() {
 200                                                 Ok(amt) => amt,
 201                                                 Err(e) => {
 202                                                         println!("ERROR: couldn't parse amount_msat: {}", e);
 203                                                         continue;
 204                                                 }
 205                                         };
 206                                         keysend(
 207                                                 &channel_manager,
 208                                                 dest_pubkey,
 209                                                 amt_msat,
 210                                                 &*keys_manager,
 211                                                 &mut outbound_payments.lock().unwrap(),
 212                                                 persister.clone(),
 213                                         );
 214                                 }
 215                                 "getinvoice" => {
 216                                         let amt_str = words.next();
 217                                         if amt_str.is_none() {
 218                                                 println!("ERROR: getinvoice requires an amount in millisatoshis");
 219                                                 continue;
 220                                         }
 221
 222                                         let amt_msat: Result<u64, _> = amt_str.unwrap().parse();
 223                                         if amt_msat.is_err() {
 224                                                 println!("ERROR: getinvoice provided payment amount was not a number");
 225                                                 continue;
 226                                         }
 227
 228                                         let expiry_secs_str = words.next();
 229                                         if expiry_secs_str.is_none() {
 230                                                 println!("ERROR: getinvoice requires an expiry in seconds");
 231                                                 continue;
 232                                         }
 233
 234                                         let expiry_secs: Result<u32, _> = expiry_secs_str.unwrap().parse();
 235                                         if expiry_secs.is_err() {
 236                                                 println!("ERROR: getinvoice provided expiry was not a number");
 237                                                 continue;
 238                                         }
 239
 240                                         let mut inbound_payments = inbound_payments.lock().unwrap();
 241                                         get_invoice(
 242                                                 amt_msat.unwrap(),
 243                                                 &mut inbound_payments,
 244                                                 &channel_manager,
 245                                                 Arc::clone(&keys_manager),
 246                                                 network,
 247                                                 expiry_secs.unwrap(),
 248                                                 Arc::clone(&logger),
 249                                         );
 250                                         persister.persist(INBOUND_PAYMENTS_FNAME, &*inbound_payments).unwrap();
 251                                 }
 252                                 "connectpeer" => {
 253                                         let peer_pubkey_and_ip_addr = words.next();
 254                                         if peer_pubkey_and_ip_addr.is_none() {
 255                                                 println!("ERROR: connectpeer requires peer connection info: `connectpeer pubkey@host:port`");
 256                                                 continue;
 257                                         }
 258                                         let (pubkey, peer_addr) =
 259                                                 match parse_peer_info(peer_pubkey_and_ip_addr.unwrap().to_string()) {
 260                                                         Ok(info) => info,
 261                                                         Err(e) => {
 262                                                                 println!("{:?}", e.into_inner().unwrap());
 263                                                                 continue;
 264                                                         }
 265                                                 };
 266                                         if tokio::runtime::Handle::current()
 267                                                 .block_on(connect_peer_if_necessary(
 268                                                         pubkey,
 269                                                         peer_addr,
 270                                                         peer_manager.clone(),
 271                                                 ))
 272                                                 .is_ok()
 273                                         {
 274                                                 println!("SUCCESS: connected to peer {}", pubkey);
 275                                         }
 276                                 }
 277                                 "disconnectpeer" => {
 278                                         let peer_pubkey = words.next();
 279                                         if peer_pubkey.is_none() {
 280                                                 println!("ERROR: disconnectpeer requires peer public key: `disconnectpeer <peer_pubkey>`");
 281                                                 continue;
 282                                         }
 283
 284                                         let peer_pubkey =
 285                                                 match bitcoin::secp256k1::PublicKey::from_str(peer_pubkey.unwrap()) {
 286                                                         Ok(pubkey) => pubkey,
 287                                                         Err(e) => {
 288                                                                 println!("ERROR: {}", e.to_string());
 289                                                                 continue;
 290                                                         }
 291                                                 };
 292
 293                                         if do_disconnect_peer(
 294                                                 peer_pubkey,
 295                                                 peer_manager.clone(),
 296                                                 channel_manager.clone(),
 297                                         )
 298                                         .is_ok()
 299                                         {
 300                                                 println!("SUCCESS: disconnected from peer {}", peer_pubkey);
 301                                         }
 302                                 }
 303                                 "listchannels" => list_channels(&channel_manager, &network_graph),
 304                                 "listpayments" => list_payments(
 305                                         &inbound_payments.lock().unwrap(),
 306                                         &outbound_payments.lock().unwrap(),
 307                                 ),
 308                                 "closechannel" => {
 309                                         let channel_id_str = words.next();
 310                                         if channel_id_str.is_none() {
 311                                                 println!("ERROR: closechannel requires a channel ID: `closechannel <channel_id> <peer_pubkey>`");
 312                                                 continue;
 313                                         }
 314                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 315                                         if channel_id_vec.is_none() || channel_id_vec.as_ref().unwrap().len() != 32 {
 316                                                 println!("ERROR: couldn't parse channel_id");
 317                                                 continue;
 318                                         }
 319                                         let mut channel_id = [0; 32];
 320                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 321
 322                                         let peer_pubkey_str = words.next();
 323                                         if peer_pubkey_str.is_none() {
 324                                                 println!("ERROR: closechannel requires a peer pubkey: `closechannel <channel_id> <peer_pubkey>`");
 325                                                 continue;
 326                                         }
 327                                         let peer_pubkey_vec = match hex_utils::to_vec(peer_pubkey_str.unwrap()) {
 328                                                 Some(peer_pubkey_vec) => peer_pubkey_vec,
 329                                                 None => {
 330                                                         println!("ERROR: couldn't parse peer_pubkey");
 331                                                         continue;
 332                                                 }
 333                                         };
 334                                         let peer_pubkey = match PublicKey::from_slice(&peer_pubkey_vec) {
 335                                                 Ok(peer_pubkey) => peer_pubkey,
 336                                                 Err(_) => {
 337                                                         println!("ERROR: couldn't parse peer_pubkey");
 338                                                         continue;
 339                                                 }
 340                                         };
 341
 342                                         close_channel(channel_id, peer_pubkey, channel_manager.clone());
 343                                 }
 344                                 "forceclosechannel" => {
 345                                         let channel_id_str = words.next();
 346                                         if channel_id_str.is_none() {
 347                                                 println!("ERROR: forceclosechannel requires a channel ID: `forceclosechannel <channel_id> <peer_pubkey>`");
 348                                                 continue;
 349                                         }
 350                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 351                                         if channel_id_vec.is_none() || channel_id_vec.as_ref().unwrap().len() != 32 {
 352                                                 println!("ERROR: couldn't parse channel_id");
 353                                                 continue;
 354                                         }
 355                                         let mut channel_id = [0; 32];
 356                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 357
 358                                         let peer_pubkey_str = words.next();
 359                                         if peer_pubkey_str.is_none() {
 360                                                 println!("ERROR: forceclosechannel requires a peer pubkey: `forceclosechannel <channel_id> <peer_pubkey>`");
 361                                                 continue;
 362                                         }
 363                                         let peer_pubkey_vec = match hex_utils::to_vec(peer_pubkey_str.unwrap()) {
 364                                                 Some(peer_pubkey_vec) => peer_pubkey_vec,
 365                                                 None => {
 366                                                         println!("ERROR: couldn't parse peer_pubkey");
 367                                                         continue;
 368                                                 }
 369                                         };
 370                                         let peer_pubkey = match PublicKey::from_slice(&peer_pubkey_vec) {
 371                                                 Ok(peer_pubkey) => peer_pubkey,
 372                                                 Err(_) => {
 373                                                         println!("ERROR: couldn't parse peer_pubkey");
 374                                                         continue;
 375                                                 }
 376                                         };
 377
 378                                         force_close_channel(channel_id, peer_pubkey, channel_manager.clone());
 379                                 }
 380                                 "nodeinfo" => node_info(&channel_manager, &peer_manager),
 381                                 "listpeers" => list_peers(peer_manager.clone()),
 382                                 "signmessage" => {
 383                                         const MSG_STARTPOS: usize = "signmessage".len() + 1;
 384                                         if line.trim().as_bytes().len() <= MSG_STARTPOS {
 385                                                 println!("ERROR: signmsg requires a message");
 386                                                 continue;
 387                                         }
 388                                         println!(
 389                                                 "{:?}",
 390                                                 lightning::util::message_signing::sign(
 391                                                         &line.trim().as_bytes()[MSG_STARTPOS..],
 392                                                         &keys_manager.get_node_secret_key()
 393                                                 )
 394                                         );
 395                                 }
 396                                 "sendonionmessage" => {
 397                                         let path_pks_str = words.next();
 398                                         if path_pks_str.is_none() {
 399                                                 println!(
 400                                                         "ERROR: sendonionmessage requires at least one node id for the path"
 401                                                 );
 402                                                 continue;
 403                                         }
 404                                         let mut intermediate_nodes = Vec::new();
 405                                         let mut errored = false;
 406                                         for pk_str in path_pks_str.unwrap().split(",") {
 407                                                 let node_pubkey_vec = match hex_utils::to_vec(pk_str) {
 408                                                         Some(peer_pubkey_vec) => peer_pubkey_vec,
 409                                                         None => {
 410                                                                 println!("ERROR: couldn't parse peer_pubkey");
 411                                                                 errored = true;
 412                                                                 break;
 413                                                         }
 414                                                 };
 415                                                 let node_pubkey = match PublicKey::from_slice(&node_pubkey_vec) {
 416                                                         Ok(peer_pubkey) => peer_pubkey,
 417                                                         Err(_) => {
 418                                                                 println!("ERROR: couldn't parse peer_pubkey");
 419                                                                 errored = true;
 420                                                                 break;
 421                                                         }
 422                                                 };
 423                                                 intermediate_nodes.push(node_pubkey);
 424                                         }
 425                                         if errored {
 426                                                 continue;
 427                                         }
 428                                         let tlv_type = match words.next().map(|ty_str| ty_str.parse()) {
 429                                                 Some(Ok(ty)) if ty >= 64 => ty,
 430                                                 _ => {
 431                                                         println!("Need an integral message type above 64");
 432                                                         continue;
 433                                                 }
 434                                         };
 435                                         let data = match words.next().map(|s| hex_utils::to_vec(s)) {
 436                                                 Some(Some(data)) => data,
 437                                                 _ => {
 438                                                         println!("Need a hex data string");
 439                                                         continue;
 440                                                 }
 441                                         };
 442                                         let destination = Destination::Node(intermediate_nodes.pop().unwrap());
 443                                         let message_path = OnionMessagePath { intermediate_nodes, destination };
 444                                         match onion_messenger.send_onion_message(
 445                                                 message_path,
 446                                                 OnionMessageContents::Custom(UserOnionMessageContents { tlv_type, data }),
 447                                                 None,
 448                                         ) {
 449                                                 Ok(()) => println!("SUCCESS: forwarded onion message to first hop"),
 450                                                 Err(e) => println!("ERROR: failed to send onion message: {:?}", e),
 451                                         }
 452                                 }
 453                                 "quit" | "exit" => break,
 454                                 _ => println!("Unknown command. See `\"help\" for available commands."),
 455                         }
 456                 }
 457         }
 458 }
 459
 460 fn help() {
 461         let package_version = env!("CARGO_PKG_VERSION");
 462         let package_name = env!("CARGO_PKG_NAME");
 463         println!("\nVERSION:");
 464         println!("  {} v{}", package_name, package_version);
 465         println!("\nUSAGE:");
 466         println!("  Command [arguments]");
 467         println!("\nCOMMANDS:");
 468         println!("  help\tShows a list of commands.");
 469         println!("  quit\tClose the application.");
 470         println!("\n  Channels:");
 471         println!("      openchannel pubkey@host:port <amt_satoshis> [--public] [--with-anchors]");
 472         println!("      closechannel <channel_id> <peer_pubkey>");
 473         println!("      forceclosechannel <channel_id> <peer_pubkey>");
 474         println!("      listchannels");
 475         println!("\n  Peers:");
 476         println!("      connectpeer pubkey@host:port");
 477         println!("      disconnectpeer <peer_pubkey>");
 478         println!("      listpeers");
 479         println!("\n  Payments:");
 480         println!("      sendpayment <invoice>");
 481         println!("      keysend <dest_pubkey> <amt_msats>");
 482         println!("      listpayments");
 483         println!("\n  Invoices:");
 484         println!("      getinvoice <amt_msats> <expiry_secs>");
 485         println!("\n  Other:");
 486         println!("      signmessage <message>");
 487         println!(
 488                 "      sendonionmessage <node_id_1,node_id_2,..,destination_node_id> <type> <hex_bytes>"
 489         );
 490         println!("      nodeinfo");
 491 }
 492
 493 fn node_info(channel_manager: &Arc<ChannelManager>, peer_manager: &Arc<PeerManager>) {
 494         println!("\t{{");
 495         println!("\t\t node_pubkey: {}", channel_manager.get_our_node_id());
 496         let chans = channel_manager.list_channels();
 497         println!("\t\t num_channels: {}", chans.len());
 498         println!("\t\t num_usable_channels: {}", chans.iter().filter(|c| c.is_usable).count());
 499         let local_balance_msat = chans.iter().map(|c| c.balance_msat).sum::<u64>();
 500         println!("\t\t local_balance_msat: {}", local_balance_msat);
 501         println!("\t\t num_peers: {}", peer_manager.get_peer_node_ids().len());
 502         println!("\t}},");
 503 }
 504
 505 fn list_peers(peer_manager: Arc<PeerManager>) {
 506         println!("\t{{");
 507         for (pubkey, _) in peer_manager.get_peer_node_ids() {
 508                 println!("\t\t pubkey: {}", pubkey);
 509         }
 510         println!("\t}},");
 511 }
 512
 513 fn list_channels(channel_manager: &Arc<ChannelManager>, network_graph: &Arc<NetworkGraph>) {
 514         print!("[");
 515         for chan_info in channel_manager.list_channels() {
 516                 println!("");
 517                 println!("\t{{");
 518                 println!("\t\tchannel_id: {},", hex_utils::hex_str(&chan_info.channel_id[..]));
 519                 if let Some(funding_txo) = chan_info.funding_txo {
 520                         println!("\t\tfunding_txid: {},", funding_txo.txid);
 521                 }
 522
 523                 println!(
 524                         "\t\tpeer_pubkey: {},",
 525                         hex_utils::hex_str(&chan_info.counterparty.node_id.serialize())
 526                 );
 527                 if let Some(node_info) = network_graph
 528                         .read_only()
 529                         .nodes()
 530                         .get(&NodeId::from_pubkey(&chan_info.counterparty.node_id))
 531                 {
 532                         if let Some(announcement) = &node_info.announcement_info {
 533                                 println!("\t\tpeer_alias: {}", announcement.alias);
 534                         }
 535                 }
 536
 537                 if let Some(id) = chan_info.short_channel_id {
 538                         println!("\t\tshort_channel_id: {},", id);
 539                 }
 540                 println!("\t\tis_channel_ready: {},", chan_info.is_channel_ready);
 541                 println!("\t\tchannel_value_satoshis: {},", chan_info.channel_value_satoshis);
 542                 println!("\t\tlocal_balance_msat: {},", chan_info.balance_msat);
 543                 if chan_info.is_usable {
 544                         println!("\t\tavailable_balance_for_send_msat: {},", chan_info.outbound_capacity_msat);
 545                         println!("\t\tavailable_balance_for_recv_msat: {},", chan_info.inbound_capacity_msat);
 546                 }
 547                 println!("\t\tchannel_can_send_payments: {},", chan_info.is_usable);
 548                 println!("\t\tpublic: {},", chan_info.is_public);
 549                 println!("\t}},");
 550         }
 551         println!("]");
 552 }
 553
 554 fn list_payments(inbound_payments: &PaymentInfoStorage, outbound_payments: &PaymentInfoStorage) {
 555         print!("[");
 556         for (payment_hash, payment_info) in &inbound_payments.payments {
 557                 println!("");
 558                 println!("\t{{");
 559                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 560                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 561                 println!("\t\thtlc_direction: inbound,");
 562                 println!(
 563                         "\t\thtlc_status: {},",
 564                         match payment_info.status {
 565                                 HTLCStatus::Pending => "pending",
 566                                 HTLCStatus::Succeeded => "succeeded",
 567                                 HTLCStatus::Failed => "failed",
 568                         }
 569                 );
 570
 571                 println!("\t}},");
 572         }
 573
 574         for (payment_hash, payment_info) in &outbound_payments.payments {
 575                 println!("");
 576                 println!("\t{{");
 577                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 578                 println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
 579                 println!("\t\thtlc_direction: outbound,");
 580                 println!(
 581                         "\t\thtlc_status: {},",
 582                         match payment_info.status {
 583                                 HTLCStatus::Pending => "pending",
 584                                 HTLCStatus::Succeeded => "succeeded",
 585                                 HTLCStatus::Failed => "failed",
 586                         }
 587                 );
 588
 589                 println!("\t}},");
 590         }
 591         println!("]");
 592 }
 593
 594 pub(crate) async fn connect_peer_if_necessary(
 595         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 596 ) -> Result<(), ()> {
 597         for (node_pubkey, _) in peer_manager.get_peer_node_ids() {
 598                 if node_pubkey == pubkey {
 599                         return Ok(());
 600                 }
 601         }
 602         let res = do_connect_peer(pubkey, peer_addr, peer_manager).await;
 603         if res.is_err() {
 604                 println!("ERROR: failed to connect to peer");
 605         }
 606         res
 607 }
 608
 609 pub(crate) async fn do_connect_peer(
 610         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 611 ) -> Result<(), ()> {
 612         match lightning_net_tokio::connect_outbound(Arc::clone(&peer_manager), pubkey, peer_addr).await
 613         {
 614                 Some(connection_closed_future) => {
 615                         let mut connection_closed_future = Box::pin(connection_closed_future);
 616                         loop {
 617                                 tokio::select! {
 618                                         _ = &mut connection_closed_future => return Err(()),
 619                                         _ = tokio::time::sleep(Duration::from_millis(10)) => {},
 620                                 };
 621                                 if peer_manager.get_peer_node_ids().iter().find(|(id, _)| *id == pubkey).is_some() {
 622                                         return Ok(());
 623                                 }
 624                         }
 625                 }
 626                 None => Err(()),
 627         }
 628 }
 629
 630 fn do_disconnect_peer(
 631         pubkey: bitcoin::secp256k1::PublicKey, peer_manager: Arc<PeerManager>,
 632         channel_manager: Arc<ChannelManager>,
 633 ) -> Result<(), ()> {
 634         //check for open channels with peer
 635         for channel in channel_manager.list_channels() {
 636                 if channel.counterparty.node_id == pubkey {
 637                         println!("Error: Node has an active channel with this peer, close any channels first");
 638                         return Err(());
 639                 }
 640         }
 641
 642         //check the pubkey matches a valid connected peer
 643         let peers = peer_manager.get_peer_node_ids();
 644         if !peers.iter().any(|(pk, _)| &pubkey == pk) {
 645                 println!("Error: Could not find peer {}", pubkey);
 646                 return Err(());
 647         }
 648
 649         peer_manager.disconnect_by_node_id(pubkey);
 650         Ok(())
 651 }
 652
 653 fn open_channel(
 654         peer_pubkey: PublicKey, channel_amt_sat: u64, announced_channel: bool, with_anchors: bool,
 655         channel_manager: Arc<ChannelManager>,
 656 ) -> Result<(), ()> {
 657         let config = UserConfig {
 658                 channel_handshake_limits: ChannelHandshakeLimits {
 659                         // lnd's max to_self_delay is 2016, so we want to be compatible.
 660                         their_to_self_delay: 2016,
 661                         ..Default::default()
 662                 },
 663                 channel_handshake_config: ChannelHandshakeConfig {
 664                         announced_channel,
 665                         negotiate_anchors_zero_fee_htlc_tx: with_anchors,
 666                         ..Default::default()
 667                 },
 668                 ..Default::default()
 669         };
 670
 671         match channel_manager.create_channel(peer_pubkey, channel_amt_sat, 0, 0, Some(config)) {
 672                 Ok(_) => {
 673                         println!("EVENT: initiated channel with peer {}. ", peer_pubkey);
 674                         return Ok(());
 675                 }
 676                 Err(e) => {
 677                         println!("ERROR: failed to open channel: {:?}", e);
 678                         return Err(());
 679                 }
 680         }
 681 }
 682
 683 fn send_payment(
 684         channel_manager: &ChannelManager, invoice: &Bolt11Invoice,
 685         outbound_payments: &mut PaymentInfoStorage, persister: Arc<FilesystemPersister>,
 686 ) {
 687         let payment_hash = PaymentHash((*invoice.payment_hash()).into_inner());
 688         let payment_secret = Some(*invoice.payment_secret());
 689         outbound_payments.payments.insert(
 690                 payment_hash,
 691                 PaymentInfo {
 692                         preimage: None,
 693                         secret: payment_secret,
 694                         status: HTLCStatus::Pending,
 695                         amt_msat: MillisatAmount(invoice.amount_milli_satoshis()),
 696                 },
 697         );
 698         persister.persist(OUTBOUND_PAYMENTS_FNAME, &*outbound_payments).unwrap();
 699         match pay_invoice(invoice, Retry::Timeout(Duration::from_secs(10)), channel_manager) {
 700                 Ok(_payment_id) => {
 701                         let payee_pubkey = invoice.recover_payee_pub_key();
 702                         let amt_msat = invoice.amount_milli_satoshis().unwrap();
 703                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee_pubkey);
 704                         print!("> ");
 705                 }
 706                 Err(e) => {
 707                         println!("ERROR: failed to send payment: {:?}", e);
 708                         print!("> ");
 709                         outbound_payments.payments.get_mut(&payment_hash).unwrap().status = HTLCStatus::Failed;
 710                         persister.persist(OUTBOUND_PAYMENTS_FNAME, &*outbound_payments).unwrap();
 711                 }
 712         };
 713 }
 714
 715 fn keysend<E: EntropySource>(
 716         channel_manager: &ChannelManager, payee_pubkey: PublicKey, amt_msat: u64, entropy_source: &E,
 717         outbound_payments: &mut PaymentInfoStorage, persister: Arc<FilesystemPersister>,
 718 ) {
 719         let payment_preimage = PaymentPreimage(entropy_source.get_secure_random_bytes());
 720         let payment_hash = PaymentHash(Sha256::hash(&payment_preimage.0[..]).into_inner());
 721
 722         let route_params = RouteParameters {
 723                 payment_params: PaymentParameters::for_keysend(payee_pubkey, 40, false),
 724                 final_value_msat: amt_msat,
 725         };
 726         outbound_payments.payments.insert(
 727                 payment_hash,
 728                 PaymentInfo {
 729                         preimage: None,
 730                         secret: None,
 731                         status: HTLCStatus::Pending,
 732                         amt_msat: MillisatAmount(Some(amt_msat)),
 733                 },
 734         );
 735         persister.persist(OUTBOUND_PAYMENTS_FNAME, &*outbound_payments).unwrap();
 736         match channel_manager.send_spontaneous_payment_with_retry(
 737                 Some(payment_preimage),
 738                 RecipientOnionFields::spontaneous_empty(),
 739                 PaymentId(payment_hash.0),
 740                 route_params,
 741                 Retry::Timeout(Duration::from_secs(10)),
 742         ) {
 743                 Ok(_payment_hash) => {
 744                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee_pubkey);
 745                         print!("> ");
 746                 }
 747                 Err(e) => {
 748                         println!("ERROR: failed to send payment: {:?}", e);
 749                         print!("> ");
 750                         outbound_payments.payments.get_mut(&payment_hash).unwrap().status = HTLCStatus::Failed;
 751                         persister.persist(OUTBOUND_PAYMENTS_FNAME, &*outbound_payments).unwrap();
 752                 }
 753         };
 754 }
 755
 756 fn get_invoice(
 757         amt_msat: u64, inbound_payments: &mut PaymentInfoStorage, channel_manager: &ChannelManager,
 758         keys_manager: Arc<KeysManager>, network: Network, expiry_secs: u32,
 759         logger: Arc<disk::FilesystemLogger>,
 760 ) {
 761         let currency = match network {
 762                 Network::Bitcoin => Currency::Bitcoin,
 763                 Network::Testnet => Currency::BitcoinTestnet,
 764                 Network::Regtest => Currency::Regtest,
 765                 Network::Signet => Currency::Signet,
 766         };
 767         let invoice = match utils::create_invoice_from_channelmanager(
 768                 channel_manager,
 769                 keys_manager,
 770                 logger,
 771                 currency,
 772                 Some(amt_msat),
 773                 "ldk-tutorial-node".to_string(),
 774                 expiry_secs,
 775                 None,
 776         ) {
 777                 Ok(inv) => {
 778                         println!("SUCCESS: generated invoice: {}", inv);
 779                         inv
 780                 }
 781                 Err(e) => {
 782                         println!("ERROR: failed to create invoice: {:?}", e);
 783                         return;
 784                 }
 785         };
 786
 787         let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
 788         inbound_payments.payments.insert(
 789                 payment_hash,
 790                 PaymentInfo {
 791                         preimage: None,
 792                         secret: Some(invoice.payment_secret().clone()),
 793                         status: HTLCStatus::Pending,
 794                         amt_msat: MillisatAmount(Some(amt_msat)),
 795                 },
 796         );
 797 }
 798
 799 fn close_channel(
 800         channel_id: [u8; 32], counterparty_node_id: PublicKey, channel_manager: Arc<ChannelManager>,
 801 ) {
 802         match channel_manager.close_channel(&channel_id, &counterparty_node_id) {
 803                 Ok(()) => println!("EVENT: initiating channel close"),
 804                 Err(e) => println!("ERROR: failed to close channel: {:?}", e),
 805         }
 806 }
 807
 808 fn force_close_channel(
 809         channel_id: [u8; 32], counterparty_node_id: PublicKey, channel_manager: Arc<ChannelManager>,
 810 ) {
 811         match channel_manager.force_close_broadcasting_latest_txn(&channel_id, &counterparty_node_id) {
 812                 Ok(()) => println!("EVENT: initiating channel force-close"),
 813                 Err(e) => println!("ERROR: failed to force-close channel: {:?}", e),
 814         }
 815 }
 816
 817 pub(crate) fn parse_peer_info(
 818         peer_pubkey_and_ip_addr: String,
 819 ) -> Result<(PublicKey, SocketAddr), std::io::Error> {
 820         let mut pubkey_and_addr = peer_pubkey_and_ip_addr.split("@");
 821         let pubkey = pubkey_and_addr.next();
 822         let peer_addr_str = pubkey_and_addr.next();
 823         if peer_addr_str.is_none() {
 824                 return Err(std::io::Error::new(
 825                         std::io::ErrorKind::Other,
 826                         "ERROR: incorrectly formatted peer info. Should be formatted as: `pubkey@host:port`",
 827                 ));
 828         }
 829
 830         let peer_addr = peer_addr_str.unwrap().to_socket_addrs().map(|mut r| r.next());
 831         if peer_addr.is_err() || peer_addr.as_ref().unwrap().is_none() {
 832                 return Err(std::io::Error::new(
 833                         std::io::ErrorKind::Other,
 834                         "ERROR: couldn't parse pubkey@host:port into a socket address",
 835                 ));
 836         }
 837
 838         let pubkey = hex_utils::to_compressed_pubkey(pubkey.unwrap());
 839         if pubkey.is_none() {
 840                 return Err(std::io::Error::new(
 841                         std::io::ErrorKind::Other,
 842                         "ERROR: unable to parse given pubkey for node",
 843                 ));
 844         }
 845
 846         Ok((pubkey.unwrap(), peer_addr.unwrap().unwrap()))
 847 }