_ 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, InboundPaymentInfoStorage, MillisatAmount, NetworkGraph,
   5         OnionMessenger, OutboundPaymentInfoStorage, PaymentInfo, 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::SocketAddress;
  13 use lightning::ln::{ChannelId, PaymentHash, PaymentPreimage};
  14 use lightning::onion_message::messenger::Destination;
  15 use lightning::onion_message::packet::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::KVStore;
  21 use lightning::util::ser::{Writeable, Writer};
  22 use lightning_invoice::payment::payment_parameters_from_invoice;
  23 use lightning_invoice::{utils, Bolt11Invoice, Currency};
  24 use lightning_persister::fs_store::FilesystemStore;
  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<SocketAddress>,
  42         pub(crate) ldk_announced_node_name: [u8; 32],
  43         pub(crate) network: Network,
  44 }
  45
  46 #[derive(Debug)]
  47 struct UserOnionMessageContents {
  48         tlv_type: u64,
  49         data: Vec<u8>,
  50 }
  51
  52 impl OnionMessageContents for UserOnionMessageContents {
  53         fn tlv_type(&self) -> u64 {
  54                 self.tlv_type
  55         }
  56 }
  57
  58 impl Writeable for UserOnionMessageContents {
  59         fn write<W: Writer>(&self, w: &mut W) -> Result<(), std::io::Error> {
  60                 w.write_all(&self.data)
  61         }
  62 }
  63
  64 pub(crate) fn poll_for_user_input(
  65         peer_manager: Arc<PeerManager>, channel_manager: Arc<ChannelManager>,
  66         keys_manager: Arc<KeysManager>, network_graph: Arc<NetworkGraph>,
  67         onion_messenger: Arc<OnionMessenger>, inbound_payments: Arc<Mutex<InboundPaymentInfoStorage>>,
  68         outbound_payments: Arc<Mutex<OutboundPaymentInfoStorage>>, ldk_data_dir: String,
  69         network: Network, logger: Arc<disk::FilesystemLogger>, fs_store: Arc<FilesystemStore>,
  70 ) {
  71         println!(
  72                 "LDK startup successful. Enter \"help\" to view available commands. Press Ctrl-D to quit."
  73         );
  74         println!("LDK logs are available at <your-supplied-ldk-data-dir-path>/.ldk/logs");
  75         println!("Local Node ID is {}.", channel_manager.get_our_node_id());
  76         loop {
  77                 print!("> ");
  78                 io::stdout().flush().unwrap(); // Without flushing, the `>` doesn't print
  79                 let mut line = String::new();
  80                 if let Err(e) = io::stdin().read_line(&mut line) {
  81                         break println!("ERROR: {}", e);
  82                 }
  83
  84                 if line.len() == 0 {
  85                         // We hit EOF / Ctrl-D
  86                         break;
  87                 }
  88
  89                 let mut words = line.split_whitespace();
  90                 if let Some(word) = words.next() {
  91                         match word {
  92                                 "help" => help(),
  93                                 "openchannel" => {
  94                                         let peer_pubkey_and_ip_addr = words.next();
  95                                         let channel_value_sat = words.next();
  96                                         if peer_pubkey_and_ip_addr.is_none() || channel_value_sat.is_none() {
  97                                                 println!("ERROR: openchannel has 2 required arguments: `openchannel pubkey@host:port channel_amt_satoshis` [--public] [--with-anchors]");
  98                                                 continue;
  99                                         }
 100                                         let peer_pubkey_and_ip_addr = peer_pubkey_and_ip_addr.unwrap();
 101                                         let (pubkey, peer_addr) =
 102                                                 match parse_peer_info(peer_pubkey_and_ip_addr.to_string()) {
 103                                                         Ok(info) => info,
 104                                                         Err(e) => {
 105                                                                 println!("{:?}", e.into_inner().unwrap());
 106                                                                 continue;
 107                                                         }
 108                                                 };
 109
 110                                         let chan_amt_sat: Result<u64, _> = channel_value_sat.unwrap().parse();
 111                                         if chan_amt_sat.is_err() {
 112                                                 println!("ERROR: channel amount must be a number");
 113                                                 continue;
 114                                         }
 115
 116                                         if tokio::runtime::Handle::current()
 117                                                 .block_on(connect_peer_if_necessary(
 118                                                         pubkey,
 119                                                         peer_addr,
 120                                                         peer_manager.clone(),
 121                                                 ))
 122                                                 .is_err()
 123                                         {
 124                                                 continue;
 125                                         };
 126
 127                                         let (mut announce_channel, mut with_anchors) = (false, false);
 128                                         while let Some(word) = words.next() {
 129                                                 match word {
 130                                                         "--public" | "--public=true" => announce_channel = true,
 131                                                         "--public=false" => announce_channel = false,
 132                                                         "--with-anchors" | "--with-anchors=true" => with_anchors = true,
 133                                                         "--with-anchors=false" => with_anchors = false,
 134                                                         _ => {
 135                                                                 println!("ERROR: invalid boolean flag format. Valid formats: `--option`, `--option=true` `--option=false`");
 136                                                                 continue;
 137                                                         }
 138                                                 }
 139                                         }
 140
 141                                         if open_channel(
 142                                                 pubkey,
 143                                                 chan_amt_sat.unwrap(),
 144                                                 announce_channel,
 145                                                 with_anchors,
 146                                                 channel_manager.clone(),
 147                                         )
 148                                         .is_ok()
 149                                         {
 150                                                 let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone());
 151                                                 let _ = disk::persist_channel_peer(
 152                                                         Path::new(&peer_data_path),
 153                                                         peer_pubkey_and_ip_addr,
 154                                                 );
 155                                         }
 156                                 }
 157                                 "sendpayment" => {
 158                                         let invoice_str = words.next();
 159                                         if invoice_str.is_none() {
 160                                                 println!("ERROR: sendpayment requires an invoice: `sendpayment <invoice>`");
 161                                                 continue;
 162                                         }
 163
 164                                         let invoice = match Bolt11Invoice::from_str(invoice_str.unwrap()) {
 165                                                 Ok(inv) => inv,
 166                                                 Err(e) => {
 167                                                         println!("ERROR: invalid invoice: {:?}", e);
 168                                                         continue;
 169                                                 }
 170                                         };
 171
 172                                         send_payment(
 173                                                 &channel_manager,
 174                                                 &invoice,
 175                                                 &mut outbound_payments.lock().unwrap(),
 176                                                 Arc::clone(&fs_store),
 177                                         );
 178                                 }
 179                                 "keysend" => {
 180                                         let dest_pubkey = match words.next() {
 181                                                 Some(dest) => match hex_utils::to_compressed_pubkey(dest) {
 182                                                         Some(pk) => pk,
 183                                                         None => {
 184                                                                 println!("ERROR: couldn't parse destination pubkey");
 185                                                                 continue;
 186                                                         }
 187                                                 },
 188                                                 None => {
 189                                                         println!("ERROR: keysend requires a destination pubkey: `keysend <dest_pubkey> <amt_msat>`");
 190                                                         continue;
 191                                                 }
 192                                         };
 193                                         let amt_msat_str = match words.next() {
 194                                                 Some(amt) => amt,
 195                                                 None => {
 196                                                         println!("ERROR: keysend requires an amount in millisatoshis: `keysend <dest_pubkey> <amt_msat>`");
 197                                                         continue;
 198                                                 }
 199                                         };
 200                                         let amt_msat: u64 = match amt_msat_str.parse() {
 201                                                 Ok(amt) => amt,
 202                                                 Err(e) => {
 203                                                         println!("ERROR: couldn't parse amount_msat: {}", e);
 204                                                         continue;
 205                                                 }
 206                                         };
 207                                         keysend(
 208                                                 &channel_manager,
 209                                                 dest_pubkey,
 210                                                 amt_msat,
 211                                                 &*keys_manager,
 212                                                 &mut outbound_payments.lock().unwrap(),
 213                                                 Arc::clone(&fs_store),
 214                                         );
 215                                 }
 216                                 "getinvoice" => {
 217                                         let amt_str = words.next();
 218                                         if amt_str.is_none() {
 219                                                 println!("ERROR: getinvoice requires an amount in millisatoshis");
 220                                                 continue;
 221                                         }
 222
 223                                         let amt_msat: Result<u64, _> = amt_str.unwrap().parse();
 224                                         if amt_msat.is_err() {
 225                                                 println!("ERROR: getinvoice provided payment amount was not a number");
 226                                                 continue;
 227                                         }
 228
 229                                         let expiry_secs_str = words.next();
 230                                         if expiry_secs_str.is_none() {
 231                                                 println!("ERROR: getinvoice requires an expiry in seconds");
 232                                                 continue;
 233                                         }
 234
 235                                         let expiry_secs: Result<u32, _> = expiry_secs_str.unwrap().parse();
 236                                         if expiry_secs.is_err() {
 237                                                 println!("ERROR: getinvoice provided expiry was not a number");
 238                                                 continue;
 239                                         }
 240
 241                                         let mut inbound_payments = inbound_payments.lock().unwrap();
 242                                         get_invoice(
 243                                                 amt_msat.unwrap(),
 244                                                 &mut inbound_payments,
 245                                                 &channel_manager,
 246                                                 Arc::clone(&keys_manager),
 247                                                 network,
 248                                                 expiry_secs.unwrap(),
 249                                                 Arc::clone(&logger),
 250                                         );
 251                                         fs_store
 252                                                 .write("", "", INBOUND_PAYMENTS_FNAME, &inbound_payments.encode())
 253                                                 .unwrap();
 254                                 }
 255                                 "connectpeer" => {
 256                                         let peer_pubkey_and_ip_addr = words.next();
 257                                         if peer_pubkey_and_ip_addr.is_none() {
 258                                                 println!("ERROR: connectpeer requires peer connection info: `connectpeer pubkey@host:port`");
 259                                                 continue;
 260                                         }
 261                                         let (pubkey, peer_addr) =
 262                                                 match parse_peer_info(peer_pubkey_and_ip_addr.unwrap().to_string()) {
 263                                                         Ok(info) => info,
 264                                                         Err(e) => {
 265                                                                 println!("{:?}", e.into_inner().unwrap());
 266                                                                 continue;
 267                                                         }
 268                                                 };
 269                                         if tokio::runtime::Handle::current()
 270                                                 .block_on(connect_peer_if_necessary(
 271                                                         pubkey,
 272                                                         peer_addr,
 273                                                         peer_manager.clone(),
 274                                                 ))
 275                                                 .is_ok()
 276                                         {
 277                                                 println!("SUCCESS: connected to peer {}", pubkey);
 278                                         }
 279                                 }
 280                                 "disconnectpeer" => {
 281                                         let peer_pubkey = words.next();
 282                                         if peer_pubkey.is_none() {
 283                                                 println!("ERROR: disconnectpeer requires peer public key: `disconnectpeer <peer_pubkey>`");
 284                                                 continue;
 285                                         }
 286
 287                                         let peer_pubkey =
 288                                                 match bitcoin::secp256k1::PublicKey::from_str(peer_pubkey.unwrap()) {
 289                                                         Ok(pubkey) => pubkey,
 290                                                         Err(e) => {
 291                                                                 println!("ERROR: {}", e.to_string());
 292                                                                 continue;
 293                                                         }
 294                                                 };
 295
 296                                         if do_disconnect_peer(
 297                                                 peer_pubkey,
 298                                                 peer_manager.clone(),
 299                                                 channel_manager.clone(),
 300                                         )
 301                                         .is_ok()
 302                                         {
 303                                                 println!("SUCCESS: disconnected from peer {}", peer_pubkey);
 304                                         }
 305                                 }
 306                                 "listchannels" => list_channels(&channel_manager, &network_graph),
 307                                 "listpayments" => list_payments(
 308                                         &inbound_payments.lock().unwrap(),
 309                                         &outbound_payments.lock().unwrap(),
 310                                 ),
 311                                 "closechannel" => {
 312                                         let channel_id_str = words.next();
 313                                         if channel_id_str.is_none() {
 314                                                 println!("ERROR: closechannel requires a channel ID: `closechannel <channel_id> <peer_pubkey>`");
 315                                                 continue;
 316                                         }
 317                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 318                                         if channel_id_vec.is_none() || channel_id_vec.as_ref().unwrap().len() != 32 {
 319                                                 println!("ERROR: couldn't parse channel_id");
 320                                                 continue;
 321                                         }
 322                                         let mut channel_id = [0; 32];
 323                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 324
 325                                         let peer_pubkey_str = words.next();
 326                                         if peer_pubkey_str.is_none() {
 327                                                 println!("ERROR: closechannel requires a peer pubkey: `closechannel <channel_id> <peer_pubkey>`");
 328                                                 continue;
 329                                         }
 330                                         let peer_pubkey_vec = match hex_utils::to_vec(peer_pubkey_str.unwrap()) {
 331                                                 Some(peer_pubkey_vec) => peer_pubkey_vec,
 332                                                 None => {
 333                                                         println!("ERROR: couldn't parse peer_pubkey");
 334                                                         continue;
 335                                                 }
 336                                         };
 337                                         let peer_pubkey = match PublicKey::from_slice(&peer_pubkey_vec) {
 338                                                 Ok(peer_pubkey) => peer_pubkey,
 339                                                 Err(_) => {
 340                                                         println!("ERROR: couldn't parse peer_pubkey");
 341                                                         continue;
 342                                                 }
 343                                         };
 344
 345                                         close_channel(channel_id, peer_pubkey, channel_manager.clone());
 346                                 }
 347                                 "forceclosechannel" => {
 348                                         let channel_id_str = words.next();
 349                                         if channel_id_str.is_none() {
 350                                                 println!("ERROR: forceclosechannel requires a channel ID: `forceclosechannel <channel_id> <peer_pubkey>`");
 351                                                 continue;
 352                                         }
 353                                         let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
 354                                         if channel_id_vec.is_none() || channel_id_vec.as_ref().unwrap().len() != 32 {
 355                                                 println!("ERROR: couldn't parse channel_id");
 356                                                 continue;
 357                                         }
 358                                         let mut channel_id = [0; 32];
 359                                         channel_id.copy_from_slice(&channel_id_vec.unwrap());
 360
 361                                         let peer_pubkey_str = words.next();
 362                                         if peer_pubkey_str.is_none() {
 363                                                 println!("ERROR: forceclosechannel requires a peer pubkey: `forceclosechannel <channel_id> <peer_pubkey>`");
 364                                                 continue;
 365                                         }
 366                                         let peer_pubkey_vec = match hex_utils::to_vec(peer_pubkey_str.unwrap()) {
 367                                                 Some(peer_pubkey_vec) => peer_pubkey_vec,
 368                                                 None => {
 369                                                         println!("ERROR: couldn't parse peer_pubkey");
 370                                                         continue;
 371                                                 }
 372                                         };
 373                                         let peer_pubkey = match PublicKey::from_slice(&peer_pubkey_vec) {
 374                                                 Ok(peer_pubkey) => peer_pubkey,
 375                                                 Err(_) => {
 376                                                         println!("ERROR: couldn't parse peer_pubkey");
 377                                                         continue;
 378                                                 }
 379                                         };
 380
 381                                         force_close_channel(channel_id, peer_pubkey, channel_manager.clone());
 382                                 }
 383                                 "nodeinfo" => node_info(&channel_manager, &peer_manager),
 384                                 "listpeers" => list_peers(peer_manager.clone()),
 385                                 "signmessage" => {
 386                                         const MSG_STARTPOS: usize = "signmessage".len() + 1;
 387                                         if line.trim().as_bytes().len() <= MSG_STARTPOS {
 388                                                 println!("ERROR: signmsg requires a message");
 389                                                 continue;
 390                                         }
 391                                         println!(
 392                                                 "{:?}",
 393                                                 lightning::util::message_signing::sign(
 394                                                         &line.trim().as_bytes()[MSG_STARTPOS..],
 395                                                         &keys_manager.get_node_secret_key()
 396                                                 )
 397                                         );
 398                                 }
 399                                 "sendonionmessage" => {
 400                                         let path_pks_str = words.next();
 401                                         if path_pks_str.is_none() {
 402                                                 println!(
 403                                                         "ERROR: sendonionmessage requires at least one node id for the path"
 404                                                 );
 405                                                 continue;
 406                                         }
 407                                         let mut intermediate_nodes = Vec::new();
 408                                         let mut errored = false;
 409                                         for pk_str in path_pks_str.unwrap().split(",") {
 410                                                 let node_pubkey_vec = match hex_utils::to_vec(pk_str) {
 411                                                         Some(peer_pubkey_vec) => peer_pubkey_vec,
 412                                                         None => {
 413                                                                 println!("ERROR: couldn't parse peer_pubkey");
 414                                                                 errored = true;
 415                                                                 break;
 416                                                         }
 417                                                 };
 418                                                 let node_pubkey = match PublicKey::from_slice(&node_pubkey_vec) {
 419                                                         Ok(peer_pubkey) => peer_pubkey,
 420                                                         Err(_) => {
 421                                                                 println!("ERROR: couldn't parse peer_pubkey");
 422                                                                 errored = true;
 423                                                                 break;
 424                                                         }
 425                                                 };
 426                                                 intermediate_nodes.push(node_pubkey);
 427                                         }
 428                                         if errored {
 429                                                 continue;
 430                                         }
 431                                         let tlv_type = match words.next().map(|ty_str| ty_str.parse()) {
 432                                                 Some(Ok(ty)) if ty >= 64 => ty,
 433                                                 _ => {
 434                                                         println!("Need an integral message type above 64");
 435                                                         continue;
 436                                                 }
 437                                         };
 438                                         let data = match words.next().map(|s| hex_utils::to_vec(s)) {
 439                                                 Some(Some(data)) => data,
 440                                                 _ => {
 441                                                         println!("Need a hex data string");
 442                                                         continue;
 443                                                 }
 444                                         };
 445                                         let destination = Destination::Node(intermediate_nodes.pop().unwrap());
 446                                         match onion_messenger.send_onion_message(
 447                                                 UserOnionMessageContents { tlv_type, data },
 448                                                 destination,
 449                                                 None,
 450                                         ) {
 451                                                 Ok(success) => {
 452                                                         println!("SUCCESS: forwarded onion message to first hop {:?}", success)
 453                                                 }
 454                                                 Err(e) => println!("ERROR: failed to send onion message: {:?}", e),
 455                                         }
 456                                 }
 457                                 "quit" | "exit" => break,
 458                                 _ => println!("Unknown command. See `\"help\" for available commands."),
 459                         }
 460                 }
 461         }
 462 }
 463
 464 fn help() {
 465         let package_version = env!("CARGO_PKG_VERSION");
 466         let package_name = env!("CARGO_PKG_NAME");
 467         println!("\nVERSION:");
 468         println!("  {} v{}", package_name, package_version);
 469         println!("\nUSAGE:");
 470         println!("  Command [arguments]");
 471         println!("\nCOMMANDS:");
 472         println!("  help\tShows a list of commands.");
 473         println!("  quit\tClose the application.");
 474         println!("\n  Channels:");
 475         println!("      openchannel pubkey@host:port <amt_satoshis> [--public] [--with-anchors]");
 476         println!("      closechannel <channel_id> <peer_pubkey>");
 477         println!("      forceclosechannel <channel_id> <peer_pubkey>");
 478         println!("      listchannels");
 479         println!("\n  Peers:");
 480         println!("      connectpeer pubkey@host:port");
 481         println!("      disconnectpeer <peer_pubkey>");
 482         println!("      listpeers");
 483         println!("\n  Payments:");
 484         println!("      sendpayment <invoice>");
 485         println!("      keysend <dest_pubkey> <amt_msats>");
 486         println!("      listpayments");
 487         println!("\n  Invoices:");
 488         println!("      getinvoice <amt_msats> <expiry_secs>");
 489         println!("\n  Other:");
 490         println!("      signmessage <message>");
 491         println!(
 492                 "      sendonionmessage <node_id_1,node_id_2,..,destination_node_id> <type> <hex_bytes>"
 493         );
 494         println!("      nodeinfo");
 495 }
 496
 497 fn node_info(channel_manager: &Arc<ChannelManager>, peer_manager: &Arc<PeerManager>) {
 498         println!("\t{{");
 499         println!("\t\t node_pubkey: {}", channel_manager.get_our_node_id());
 500         let chans = channel_manager.list_channels();
 501         println!("\t\t num_channels: {}", chans.len());
 502         println!("\t\t num_usable_channels: {}", chans.iter().filter(|c| c.is_usable).count());
 503         let local_balance_msat = chans.iter().map(|c| c.balance_msat).sum::<u64>();
 504         println!("\t\t local_balance_msat: {}", local_balance_msat);
 505         println!("\t\t num_peers: {}", peer_manager.get_peer_node_ids().len());
 506         println!("\t}},");
 507 }
 508
 509 fn list_peers(peer_manager: Arc<PeerManager>) {
 510         println!("\t{{");
 511         for (pubkey, _) in peer_manager.get_peer_node_ids() {
 512                 println!("\t\t pubkey: {}", pubkey);
 513         }
 514         println!("\t}},");
 515 }
 516
 517 fn list_channels(channel_manager: &Arc<ChannelManager>, network_graph: &Arc<NetworkGraph>) {
 518         print!("[");
 519         for chan_info in channel_manager.list_channels() {
 520                 println!("");
 521                 println!("\t{{");
 522                 println!("\t\tchannel_id: {},", chan_info.channel_id);
 523                 if let Some(funding_txo) = chan_info.funding_txo {
 524                         println!("\t\tfunding_txid: {},", funding_txo.txid);
 525                 }
 526
 527                 println!(
 528                         "\t\tpeer_pubkey: {},",
 529                         hex_utils::hex_str(&chan_info.counterparty.node_id.serialize())
 530                 );
 531                 if let Some(node_info) = network_graph
 532                         .read_only()
 533                         .nodes()
 534                         .get(&NodeId::from_pubkey(&chan_info.counterparty.node_id))
 535                 {
 536                         if let Some(announcement) = &node_info.announcement_info {
 537                                 println!("\t\tpeer_alias: {}", announcement.alias);
 538                         }
 539                 }
 540
 541                 if let Some(id) = chan_info.short_channel_id {
 542                         println!("\t\tshort_channel_id: {},", id);
 543                 }
 544                 println!("\t\tis_channel_ready: {},", chan_info.is_channel_ready);
 545                 println!("\t\tchannel_value_satoshis: {},", chan_info.channel_value_satoshis);
 546                 println!("\t\toutbound_capacity_msat: {},", chan_info.outbound_capacity_msat);
 547                 if chan_info.is_usable {
 548                         println!("\t\tavailable_balance_for_send_msat: {},", chan_info.outbound_capacity_msat);
 549                         println!("\t\tavailable_balance_for_recv_msat: {},", chan_info.inbound_capacity_msat);
 550                 }
 551                 println!("\t\tchannel_can_send_payments: {},", chan_info.is_usable);
 552                 println!("\t\tpublic: {},", chan_info.is_public);
 553                 println!("\t}},");
 554         }
 555         println!("]");
 556 }
 557
 558 fn list_payments(
 559         inbound_payments: &InboundPaymentInfoStorage, outbound_payments: &OutboundPaymentInfoStorage,
 560 ) {
 561         print!("[");
 562         for (payment_hash, payment_info) in &inbound_payments.payments {
 563                 println!("");
 564                 println!("\t{{");
 565                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 566                 println!("\t\tpayment_hash: {},", payment_hash);
 567                 println!("\t\thtlc_direction: inbound,");
 568                 println!(
 569                         "\t\thtlc_status: {},",
 570                         match payment_info.status {
 571                                 HTLCStatus::Pending => "pending",
 572                                 HTLCStatus::Succeeded => "succeeded",
 573                                 HTLCStatus::Failed => "failed",
 574                         }
 575                 );
 576
 577                 println!("\t}},");
 578         }
 579
 580         for (payment_hash, payment_info) in &outbound_payments.payments {
 581                 println!("");
 582                 println!("\t{{");
 583                 println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
 584                 println!("\t\tpayment_hash: {},", payment_hash);
 585                 println!("\t\thtlc_direction: outbound,");
 586                 println!(
 587                         "\t\thtlc_status: {},",
 588                         match payment_info.status {
 589                                 HTLCStatus::Pending => "pending",
 590                                 HTLCStatus::Succeeded => "succeeded",
 591                                 HTLCStatus::Failed => "failed",
 592                         }
 593                 );
 594
 595                 println!("\t}},");
 596         }
 597         println!("]");
 598 }
 599
 600 pub(crate) async fn connect_peer_if_necessary(
 601         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 602 ) -> Result<(), ()> {
 603         for (node_pubkey, _) in peer_manager.get_peer_node_ids() {
 604                 if node_pubkey == pubkey {
 605                         return Ok(());
 606                 }
 607         }
 608         let res = do_connect_peer(pubkey, peer_addr, peer_manager).await;
 609         if res.is_err() {
 610                 println!("ERROR: failed to connect to peer");
 611         }
 612         res
 613 }
 614
 615 pub(crate) async fn do_connect_peer(
 616         pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
 617 ) -> Result<(), ()> {
 618         match lightning_net_tokio::connect_outbound(Arc::clone(&peer_manager), pubkey, peer_addr).await
 619         {
 620                 Some(connection_closed_future) => {
 621                         let mut connection_closed_future = Box::pin(connection_closed_future);
 622                         loop {
 623                                 tokio::select! {
 624                                         _ = &mut connection_closed_future => return Err(()),
 625                                         _ = tokio::time::sleep(Duration::from_millis(10)) => {},
 626                                 };
 627                                 if peer_manager.get_peer_node_ids().iter().find(|(id, _)| *id == pubkey).is_some() {
 628                                         return Ok(());
 629                                 }
 630                         }
 631                 }
 632                 None => Err(()),
 633         }
 634 }
 635
 636 fn do_disconnect_peer(
 637         pubkey: bitcoin::secp256k1::PublicKey, peer_manager: Arc<PeerManager>,
 638         channel_manager: Arc<ChannelManager>,
 639 ) -> Result<(), ()> {
 640         //check for open channels with peer
 641         for channel in channel_manager.list_channels() {
 642                 if channel.counterparty.node_id == pubkey {
 643                         println!("Error: Node has an active channel with this peer, close any channels first");
 644                         return Err(());
 645                 }
 646         }
 647
 648         //check the pubkey matches a valid connected peer
 649         let peers = peer_manager.get_peer_node_ids();
 650         if !peers.iter().any(|(pk, _)| &pubkey == pk) {
 651                 println!("Error: Could not find peer {}", pubkey);
 652                 return Err(());
 653         }
 654
 655         peer_manager.disconnect_by_node_id(pubkey);
 656         Ok(())
 657 }
 658
 659 fn open_channel(
 660         peer_pubkey: PublicKey, channel_amt_sat: u64, announced_channel: bool, with_anchors: bool,
 661         channel_manager: Arc<ChannelManager>,
 662 ) -> Result<(), ()> {
 663         let config = UserConfig {
 664                 channel_handshake_limits: ChannelHandshakeLimits {
 665                         // lnd's max to_self_delay is 2016, so we want to be compatible.
 666                         their_to_self_delay: 2016,
 667                         ..Default::default()
 668                 },
 669                 channel_handshake_config: ChannelHandshakeConfig {
 670                         announced_channel,
 671                         negotiate_anchors_zero_fee_htlc_tx: with_anchors,
 672                         ..Default::default()
 673                 },
 674                 ..Default::default()
 675         };
 676
 677         match channel_manager.create_channel(peer_pubkey, channel_amt_sat, 0, 0, None, Some(config)) {
 678                 Ok(_) => {
 679                         println!("EVENT: initiated channel with peer {}. ", peer_pubkey);
 680                         return Ok(());
 681                 }
 682                 Err(e) => {
 683                         println!("ERROR: failed to open channel: {:?}", e);
 684                         return Err(());
 685                 }
 686         }
 687 }
 688
 689 fn send_payment(
 690         channel_manager: &ChannelManager, invoice: &Bolt11Invoice,
 691         outbound_payments: &mut OutboundPaymentInfoStorage, fs_store: Arc<FilesystemStore>,
 692 ) {
 693         let payment_id = PaymentId((*invoice.payment_hash()).to_byte_array());
 694         let payment_secret = Some(*invoice.payment_secret());
 695         let (payment_hash, recipient_onion, route_params) =
 696                 match payment_parameters_from_invoice(invoice) {
 697                         Ok(res) => res,
 698                         Err(e) => {
 699                                 println!("Failed to parse invoice");
 700                                 print!("> ");
 701                                 return;
 702                         }
 703                 };
 704         outbound_payments.payments.insert(
 705                 payment_id,
 706                 PaymentInfo {
 707                         preimage: None,
 708                         secret: payment_secret,
 709                         status: HTLCStatus::Pending,
 710                         amt_msat: MillisatAmount(invoice.amount_milli_satoshis()),
 711                 },
 712         );
 713         fs_store.write("", "", OUTBOUND_PAYMENTS_FNAME, &outbound_payments.encode()).unwrap();
 714
 715         match channel_manager.send_payment(
 716                 payment_hash,
 717                 recipient_onion,
 718                 payment_id,
 719                 route_params,
 720                 Retry::Timeout(Duration::from_secs(10)),
 721         ) {
 722                 Ok(_) => {
 723                         let payee_pubkey = invoice.recover_payee_pub_key();
 724                         let amt_msat = invoice.amount_milli_satoshis().unwrap();
 725                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee_pubkey);
 726                         print!("> ");
 727                 }
 728                 Err(e) => {
 729                         println!("ERROR: failed to send payment: {:?}", e);
 730                         print!("> ");
 731                         outbound_payments.payments.get_mut(&payment_id).unwrap().status = HTLCStatus::Failed;
 732                         fs_store.write("", "", OUTBOUND_PAYMENTS_FNAME, &outbound_payments.encode()).unwrap();
 733                 }
 734         };
 735 }
 736
 737 fn keysend<E: EntropySource>(
 738         channel_manager: &ChannelManager, payee_pubkey: PublicKey, amt_msat: u64, entropy_source: &E,
 739         outbound_payments: &mut OutboundPaymentInfoStorage, fs_store: Arc<FilesystemStore>,
 740 ) {
 741         let payment_preimage = PaymentPreimage(entropy_source.get_secure_random_bytes());
 742         let payment_id = PaymentId(Sha256::hash(&payment_preimage.0[..]).to_byte_array());
 743
 744         let route_params = RouteParameters::from_payment_params_and_value(
 745                 PaymentParameters::for_keysend(payee_pubkey, 40, false),
 746                 amt_msat,
 747         );
 748         outbound_payments.payments.insert(
 749                 payment_id,
 750                 PaymentInfo {
 751                         preimage: None,
 752                         secret: None,
 753                         status: HTLCStatus::Pending,
 754                         amt_msat: MillisatAmount(Some(amt_msat)),
 755                 },
 756         );
 757         fs_store.write("", "", OUTBOUND_PAYMENTS_FNAME, &outbound_payments.encode()).unwrap();
 758         match channel_manager.send_spontaneous_payment_with_retry(
 759                 Some(payment_preimage),
 760                 RecipientOnionFields::spontaneous_empty(),
 761                 payment_id,
 762                 route_params,
 763                 Retry::Timeout(Duration::from_secs(10)),
 764         ) {
 765                 Ok(_payment_hash) => {
 766                         println!("EVENT: initiated sending {} msats to {}", amt_msat, payee_pubkey);
 767                         print!("> ");
 768                 }
 769                 Err(e) => {
 770                         println!("ERROR: failed to send payment: {:?}", e);
 771                         print!("> ");
 772                         outbound_payments.payments.get_mut(&payment_id).unwrap().status = HTLCStatus::Failed;
 773                         fs_store.write("", "", OUTBOUND_PAYMENTS_FNAME, &outbound_payments.encode()).unwrap();
 774                 }
 775         };
 776 }
 777
 778 fn get_invoice(
 779         amt_msat: u64, inbound_payments: &mut InboundPaymentInfoStorage,
 780         channel_manager: &ChannelManager, keys_manager: Arc<KeysManager>, network: Network,
 781         expiry_secs: u32, logger: Arc<disk::FilesystemLogger>,
 782 ) {
 783         let currency = match network {
 784                 Network::Bitcoin => Currency::Bitcoin,
 785                 Network::Regtest => Currency::Regtest,
 786                 Network::Signet => Currency::Signet,
 787                 Network::Testnet | _ => Currency::BitcoinTestnet,
 788         };
 789         let invoice = match utils::create_invoice_from_channelmanager(
 790                 channel_manager,
 791                 keys_manager,
 792                 logger,
 793                 currency,
 794                 Some(amt_msat),
 795                 "ldk-tutorial-node".to_string(),
 796                 expiry_secs,
 797                 None,
 798         ) {
 799                 Ok(inv) => {
 800                         println!("SUCCESS: generated invoice: {}", inv);
 801                         inv
 802                 }
 803                 Err(e) => {
 804                         println!("ERROR: failed to create invoice: {:?}", e);
 805                         return;
 806                 }
 807         };
 808
 809         let payment_hash = PaymentHash(invoice.payment_hash().to_byte_array());
 810         inbound_payments.payments.insert(
 811                 payment_hash,
 812                 PaymentInfo {
 813                         preimage: None,
 814                         secret: Some(invoice.payment_secret().clone()),
 815                         status: HTLCStatus::Pending,
 816                         amt_msat: MillisatAmount(Some(amt_msat)),
 817                 },
 818         );
 819 }
 820
 821 fn close_channel(
 822         channel_id: [u8; 32], counterparty_node_id: PublicKey, channel_manager: Arc<ChannelManager>,
 823 ) {
 824         match channel_manager.close_channel(&ChannelId(channel_id), &counterparty_node_id) {
 825                 Ok(()) => println!("EVENT: initiating channel close"),
 826                 Err(e) => println!("ERROR: failed to close channel: {:?}", e),
 827         }
 828 }
 829
 830 fn force_close_channel(
 831         channel_id: [u8; 32], counterparty_node_id: PublicKey, channel_manager: Arc<ChannelManager>,
 832 ) {
 833         match channel_manager
 834                 .force_close_broadcasting_latest_txn(&ChannelId(channel_id), &counterparty_node_id)
 835         {
 836                 Ok(()) => println!("EVENT: initiating channel force-close"),
 837                 Err(e) => println!("ERROR: failed to force-close channel: {:?}", e),
 838         }
 839 }
 840
 841 pub(crate) fn parse_peer_info(
 842         peer_pubkey_and_ip_addr: String,
 843 ) -> Result<(PublicKey, SocketAddr), std::io::Error> {
 844         let mut pubkey_and_addr = peer_pubkey_and_ip_addr.split("@");
 845         let pubkey = pubkey_and_addr.next();
 846         let peer_addr_str = pubkey_and_addr.next();
 847         if peer_addr_str.is_none() {
 848                 return Err(std::io::Error::new(
 849                         std::io::ErrorKind::Other,
 850                         "ERROR: incorrectly formatted peer info. Should be formatted as: `pubkey@host:port`",
 851                 ));
 852         }
 853
 854         let peer_addr = peer_addr_str.unwrap().to_socket_addrs().map(|mut r| r.next());
 855         if peer_addr.is_err() || peer_addr.as_ref().unwrap().is_none() {
 856                 return Err(std::io::Error::new(
 857                         std::io::ErrorKind::Other,
 858                         "ERROR: couldn't parse pubkey@host:port into a socket address",
 859                 ));
 860         }
 861
 862         let pubkey = hex_utils::to_compressed_pubkey(pubkey.unwrap());
 863         if pubkey.is_none() {
 864                 return Err(std::io::Error::new(
 865                         std::io::ErrorKind::Other,
 866                         "ERROR: unable to parse given pubkey for node",
 867                 ));
 868         }
 869
 870         Ok((pubkey.unwrap(), peer_addr.unwrap().unwrap()))
 871 }