-use bitcoin::secp256k1::key::PublicKey;
-use crate::{FilesystemLogger, PeerManager, ChannelManager};
-use crate::utils;
+use crate::disk;
+use crate::hex_utils;
+use crate::{
+ ChannelManager, HTLCStatus, InvoicePayer, MillisatAmount, NetworkGraph, OnionMessenger,
+ PaymentInfo, PaymentInfoStorage, PeerManager,
+};
+use bitcoin::hashes::sha256::Hash as Sha256;
+use bitcoin::hashes::Hash;
+use bitcoin::network::constants::Network;
+use bitcoin::secp256k1::PublicKey;
+use lightning::chain::keysinterface::{KeysInterface, KeysManager, Recipient};
+use lightning::ln::msgs::NetAddress;
+use lightning::ln::{PaymentHash, PaymentPreimage};
+use lightning::onion_message::Destination;
+use lightning::routing::gossip::NodeId;
+use lightning::util::config::{ChannelHandshakeConfig, ChannelHandshakeLimits, UserConfig};
+use lightning::util::events::EventHandler;
+use lightning_invoice::payment::PaymentError;
+use lightning_invoice::{utils, Currency, Invoice};
+use std::env;
use std::io;
-use std::io::{BufRead, Write};
-use std::net::{SocketAddr, TcpStream};
+use std::io::Write;
+use std::net::{IpAddr, SocketAddr, ToSocketAddrs};
+use std::ops::Deref;
+use std::path::Path;
+use std::str::FromStr;
use std::sync::Arc;
-use std::thread;
use std::time::Duration;
-// use tokio::runtime::Runtime;
-use tokio::runtime::{Builder, Runtime};
-use tokio::sync::mpsc;
-
-pub fn poll_for_user_input(peer_manager: Arc<PeerManager>, channel_manager: Arc<ChannelManager>, event_notifier: mpsc::Sender<()>) {
- println!("LDK startup successful. To view available commands: \"help\".\nLDK logs are available in the `logs` folder of the current directory.");
- print!("> "); io::stdout().flush().unwrap(); // Without flushing, the `>` doesn't print
- let stdin = io::stdin();
- for line in stdin.lock().lines() {
- let line = line.unwrap();
- let mut words = line.split_whitespace();
- if let Some(word) = words.next() {
- match word {
- "help" => handle_help(),
- "openchannel" => {
- let peer_pubkey_and_ip_addr = words.next();
- let channel_value_sat = words.next();
- if peer_pubkey_and_ip_addr.is_none() || channel_value_sat.is_none() {
- println!("ERROR: openchannel takes 2 arguments: `openchannel pubkey@host:port channel_amt_satoshis`")
- } else {
- let peer_pubkey_and_ip_addr = peer_pubkey_and_ip_addr.unwrap();
- let channel_value_sat = channel_value_sat.unwrap();
- let mut pubkey_and_addr = peer_pubkey_and_ip_addr.split("@");
- let pubkey = pubkey_and_addr.next();
- let peer_addr_str = pubkey_and_addr.next();
- if peer_addr_str.is_none() || peer_addr_str.is_none() {
- println!("ERROR: incorrectly formatted peer info. Should be formatted as: `pubkey@host:port`");
- } else {
- let pubkey = pubkey.unwrap();
- let peer_addr_str = peer_addr_str.unwrap();
- let peer_addr_res: Result<SocketAddr, _> = peer_addr_str.parse();
- let chan_amt: Result<u64, _> = channel_value_sat.parse();
- if let Some(pk) = utils::hex_to_compressed_pubkey(pubkey) {
- if let Ok(addr) = peer_addr_res {
- if let Ok(amt) = chan_amt {
- handle_open_channel(pk, addr, amt,
- peer_manager.clone(),
- channel_manager.clone(),
- event_notifier.clone());
- } else {
- println!("ERROR: channel amount must be a number");
- }
- } else {
- println!("ERROR: couldn't parse
- pubkey@host:port into a socket address");
- }
- } else {
- println!("ERROR: unable to parse given pubkey for node");
- }
- }
- }
- },
- _ => println!("hello")
- }
- }
- print!("> "); io::stdout().flush().unwrap();
-
- }
-}
-
-fn handle_help() {
- println!("")
-}
-
-fn handle_open_channel(peer_pubkey: PublicKey, peer_socket: SocketAddr,
- channel_amt_sat: u64, peer_manager: Arc<PeerManager>,
- channel_manager: Arc<ChannelManager>, event_notifier:
- mpsc::Sender<()>)
-{
- // let runtime = Runtime::new().expect("Unable to create a runtime").enable_all();
- let runtime = Builder::new_multi_thread()
- .worker_threads(3)
- .enable_all()
- .build()
- .unwrap();
- match TcpStream::connect_timeout(&peer_socket, Duration::from_secs(10)) {
- Ok(stream) => {
- runtime.block_on(|| {
- lightning_net_tokio::setup_outbound(peer_manager,
- event_notifier,
- peer_pubkey,
- stream);
- });
- match channel_manager.create_channel(peer_pubkey, channel_amt_sat, 0, 0, None) {
- Ok(_) => println!("SUCCESS: channel created! Mine some blocks to open it."),
- Err(e) => println!("ERROR: failed to open channel: {:?}", e)
- }
- },
- Err(e) => println!("ERROR: failed to connect to peer: {:?}", e)
- }
+
+pub(crate) struct LdkUserInfo {
+ pub(crate) bitcoind_rpc_username: String,
+ pub(crate) bitcoind_rpc_password: String,
+ pub(crate) bitcoind_rpc_port: u16,
+ pub(crate) bitcoind_rpc_host: String,
+ pub(crate) ldk_storage_dir_path: String,
+ pub(crate) ldk_peer_listening_port: u16,
+ pub(crate) ldk_announced_listen_addr: Vec<NetAddress>,
+ pub(crate) ldk_announced_node_name: [u8; 32],
+ pub(crate) network: Network,
+}
+
+pub(crate) fn parse_startup_args() -> Result<LdkUserInfo, ()> {
+ if env::args().len() < 3 {
+ println!("ldk-tutorial-node requires 3 arguments: `cargo run <bitcoind-rpc-username>:<bitcoind-rpc-password>@<bitcoind-rpc-host>:<bitcoind-rpc-port> ldk_storage_directory_path [<ldk-incoming-peer-listening-port>] [bitcoin-network] [announced-node-name announced-listen-addr*]`");
+ return Err(());
+ }
+ let bitcoind_rpc_info = env::args().skip(1).next().unwrap();
+ let bitcoind_rpc_info_parts: Vec<&str> = bitcoind_rpc_info.rsplitn(2, "@").collect();
+ if bitcoind_rpc_info_parts.len() != 2 {
+ println!("ERROR: bad bitcoind RPC URL provided");
+ return Err(());
+ }
+ let rpc_user_and_password: Vec<&str> = bitcoind_rpc_info_parts[1].split(":").collect();
+ if rpc_user_and_password.len() != 2 {
+ println!("ERROR: bad bitcoind RPC username/password combo provided");
+ return Err(());
+ }
+ let bitcoind_rpc_username = rpc_user_and_password[0].to_string();
+ let bitcoind_rpc_password = rpc_user_and_password[1].to_string();
+ let bitcoind_rpc_path: Vec<&str> = bitcoind_rpc_info_parts[0].split(":").collect();
+ if bitcoind_rpc_path.len() != 2 {
+ println!("ERROR: bad bitcoind RPC path provided");
+ return Err(());
+ }
+ let bitcoind_rpc_host = bitcoind_rpc_path[0].to_string();
+ let bitcoind_rpc_port = bitcoind_rpc_path[1].parse::<u16>().unwrap();
+
+ let ldk_storage_dir_path = env::args().skip(2).next().unwrap();
+
+ let mut ldk_peer_port_set = true;
+ let ldk_peer_listening_port: u16 = match env::args().skip(3).next().map(|p| p.parse()) {
+ Some(Ok(p)) => p,
+ Some(Err(_)) => {
+ ldk_peer_port_set = false;
+ 9735
+ }
+ None => {
+ ldk_peer_port_set = false;
+ 9735
+ }
+ };
+
+ let mut arg_idx = match ldk_peer_port_set {
+ true => 4,
+ false => 3,
+ };
+ let network: Network = match env::args().skip(arg_idx).next().as_ref().map(String::as_str) {
+ Some("testnet") => Network::Testnet,
+ Some("regtest") => Network::Regtest,
+ Some("signet") => Network::Signet,
+ Some(net) => {
+ panic!("Unsupported network provided. Options are: `regtest`, `testnet`, and `signet`. Got {}", net);
+ }
+ None => Network::Testnet,
+ };
+
+ let ldk_announced_node_name = match env::args().skip(arg_idx + 1).next().as_ref() {
+ Some(s) => {
+ if s.len() > 32 {
+ panic!("Node Alias can not be longer than 32 bytes");
+ }
+ arg_idx += 1;
+ let mut bytes = [0; 32];
+ bytes[..s.len()].copy_from_slice(s.as_bytes());
+ bytes
+ }
+ None => [0; 32],
+ };
+
+ let mut ldk_announced_listen_addr = Vec::new();
+ loop {
+ match env::args().skip(arg_idx + 1).next().as_ref() {
+ Some(s) => match IpAddr::from_str(s) {
+ Ok(IpAddr::V4(a)) => {
+ ldk_announced_listen_addr
+ .push(NetAddress::IPv4 { addr: a.octets(), port: ldk_peer_listening_port });
+ arg_idx += 1;
+ }
+ Ok(IpAddr::V6(a)) => {
+ ldk_announced_listen_addr
+ .push(NetAddress::IPv6 { addr: a.octets(), port: ldk_peer_listening_port });
+ arg_idx += 1;
+ }
+ Err(_) => panic!("Failed to parse announced-listen-addr into an IP address"),
+ },
+ None => break,
+ }
+ }
+
+ Ok(LdkUserInfo {
+ bitcoind_rpc_username,
+ bitcoind_rpc_password,
+ bitcoind_rpc_host,
+ bitcoind_rpc_port,
+ ldk_storage_dir_path,
+ ldk_peer_listening_port,
+ ldk_announced_listen_addr,
+ ldk_announced_node_name,
+ network,
+ })
+}
+
+pub(crate) async fn poll_for_user_input<E: EventHandler>(
+ invoice_payer: Arc<InvoicePayer<E>>, peer_manager: Arc<PeerManager>,
+ channel_manager: Arc<ChannelManager>, keys_manager: Arc<KeysManager>,
+ network_graph: Arc<NetworkGraph>, onion_messenger: Arc<OnionMessenger>,
+ inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage,
+ ldk_data_dir: String, network: Network,
+) {
+ println!("LDK startup successful. To view available commands: \"help\".");
+ println!("LDK logs are available at <your-supplied-ldk-data-dir-path>/.ldk/logs");
+ println!("Local Node ID is {}.", channel_manager.get_our_node_id());
+ loop {
+ print!("> ");
+ io::stdout().flush().unwrap(); // Without flushing, the `>` doesn't print
+ let mut line = String::new();
+ if let Err(e) = io::stdin().read_line(&mut line) {
+ break println!("ERROR: {e:#}");
+ }
+
+ let mut words = line.split_whitespace();
+ if let Some(word) = words.next() {
+ match word {
+ "help" => help(),
+ "openchannel" => {
+ let peer_pubkey_and_ip_addr = words.next();
+ let channel_value_sat = words.next();
+ if peer_pubkey_and_ip_addr.is_none() || channel_value_sat.is_none() {
+ println!("ERROR: openchannel has 2 required arguments: `openchannel pubkey@host:port channel_amt_satoshis` [--public]");
+ continue;
+ }
+ let peer_pubkey_and_ip_addr = peer_pubkey_and_ip_addr.unwrap();
+ let (pubkey, peer_addr) =
+ match parse_peer_info(peer_pubkey_and_ip_addr.to_string()) {
+ Ok(info) => info,
+ Err(e) => {
+ println!("{:?}", e.into_inner().unwrap());
+ continue;
+ }
+ };
+
+ let chan_amt_sat: Result<u64, _> = channel_value_sat.unwrap().parse();
+ if chan_amt_sat.is_err() {
+ println!("ERROR: channel amount must be a number");
+ continue;
+ }
+
+ if connect_peer_if_necessary(pubkey, peer_addr, peer_manager.clone())
+ .await
+ .is_err()
+ {
+ continue;
+ };
+
+ let announce_channel = match words.next() {
+ Some("--public") | Some("--public=true") => true,
+ Some("--public=false") => false,
+ Some(_) => {
+ println!("ERROR: invalid `--public` command format. Valid formats: `--public`, `--public=true` `--public=false`");
+ continue;
+ }
+ None => false,
+ };
+
+ if open_channel(
+ pubkey,
+ chan_amt_sat.unwrap(),
+ announce_channel,
+ channel_manager.clone(),
+ )
+ .is_ok()
+ {
+ let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone());
+ let _ = disk::persist_channel_peer(
+ Path::new(&peer_data_path),
+ peer_pubkey_and_ip_addr,
+ );
+ }
+ }
+ "sendpayment" => {
+ let invoice_str = words.next();
+ if invoice_str.is_none() {
+ println!("ERROR: sendpayment requires an invoice: `sendpayment <invoice>`");
+ continue;
+ }
+
+ let invoice = match Invoice::from_str(invoice_str.unwrap()) {
+ Ok(inv) => inv,
+ Err(e) => {
+ println!("ERROR: invalid invoice: {:?}", e);
+ continue;
+ }
+ };
+
+ send_payment(&*invoice_payer, &invoice, outbound_payments.clone());
+ }
+ "keysend" => {
+ let dest_pubkey = match words.next() {
+ Some(dest) => match hex_utils::to_compressed_pubkey(dest) {
+ Some(pk) => pk,
+ None => {
+ println!("ERROR: couldn't parse destination pubkey");
+ continue;
+ }
+ },
+ None => {
+ println!("ERROR: keysend requires a destination pubkey: `keysend <dest_pubkey> <amt_msat>`");
+ continue;
+ }
+ };
+ let amt_msat_str = match words.next() {
+ Some(amt) => amt,
+ None => {
+ println!("ERROR: keysend requires an amount in millisatoshis: `keysend <dest_pubkey> <amt_msat>`");
+ continue;
+ }
+ };
+ let amt_msat: u64 = match amt_msat_str.parse() {
+ Ok(amt) => amt,
+ Err(e) => {
+ println!("ERROR: couldn't parse amount_msat: {}", e);
+ continue;
+ }
+ };
+ keysend(
+ &*invoice_payer,
+ dest_pubkey,
+ amt_msat,
+ &*keys_manager,
+ outbound_payments.clone(),
+ );
+ }
+ "getinvoice" => {
+ let amt_str = words.next();
+ if amt_str.is_none() {
+ println!("ERROR: getinvoice requires an amount in millisatoshis");
+ continue;
+ }
+
+ let amt_msat: Result<u64, _> = amt_str.unwrap().parse();
+ if amt_msat.is_err() {
+ println!("ERROR: getinvoice provided payment amount was not a number");
+ continue;
+ }
+
+ let expiry_secs_str = words.next();
+ if expiry_secs_str.is_none() {
+ println!("ERROR: getinvoice requires an expiry in seconds");
+ continue;
+ }
+
+ let expiry_secs: Result<u32, _> = expiry_secs_str.unwrap().parse();
+ if expiry_secs.is_err() {
+ println!("ERROR: getinvoice provided expiry was not a number");
+ continue;
+ }
+
+ get_invoice(
+ amt_msat.unwrap(),
+ inbound_payments.clone(),
+ channel_manager.clone(),
+ keys_manager.clone(),
+ network,
+ expiry_secs.unwrap(),
+ );
+ }
+ "connectpeer" => {
+ let peer_pubkey_and_ip_addr = words.next();
+ if peer_pubkey_and_ip_addr.is_none() {
+ println!("ERROR: connectpeer requires peer connection info: `connectpeer pubkey@host:port`");
+ continue;
+ }
+ let (pubkey, peer_addr) =
+ match parse_peer_info(peer_pubkey_and_ip_addr.unwrap().to_string()) {
+ Ok(info) => info,
+ Err(e) => {
+ println!("{:?}", e.into_inner().unwrap());
+ continue;
+ }
+ };
+ if connect_peer_if_necessary(pubkey, peer_addr, peer_manager.clone())
+ .await
+ .is_ok()
+ {
+ println!("SUCCESS: connected to peer {}", pubkey);
+ }
+ }
+ "listchannels" => list_channels(&channel_manager, &network_graph),
+ "listpayments" => {
+ list_payments(inbound_payments.clone(), outbound_payments.clone())
+ }
+ "closechannel" => {
+ let channel_id_str = words.next();
+ if channel_id_str.is_none() {
+ println!("ERROR: closechannel requires a channel ID: `closechannel <channel_id> <peer_pubkey>`");
+ continue;
+ }
+ let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
+ if channel_id_vec.is_none() || channel_id_vec.as_ref().unwrap().len() != 32 {
+ println!("ERROR: couldn't parse channel_id");
+ continue;
+ }
+ let mut channel_id = [0; 32];
+ channel_id.copy_from_slice(&channel_id_vec.unwrap());
+
+ let peer_pubkey_str = words.next();
+ if peer_pubkey_str.is_none() {
+ println!("ERROR: closechannel requires a peer pubkey: `closechannel <channel_id> <peer_pubkey>`");
+ continue;
+ }
+ let peer_pubkey_vec = match hex_utils::to_vec(peer_pubkey_str.unwrap()) {
+ Some(peer_pubkey_vec) => peer_pubkey_vec,
+ None => {
+ println!("ERROR: couldn't parse peer_pubkey");
+ continue;
+ }
+ };
+ let peer_pubkey = match PublicKey::from_slice(&peer_pubkey_vec) {
+ Ok(peer_pubkey) => peer_pubkey,
+ Err(_) => {
+ println!("ERROR: couldn't parse peer_pubkey");
+ continue;
+ }
+ };
+
+ close_channel(channel_id, peer_pubkey, channel_manager.clone());
+ }
+ "forceclosechannel" => {
+ let channel_id_str = words.next();
+ if channel_id_str.is_none() {
+ println!("ERROR: forceclosechannel requires a channel ID: `forceclosechannel <channel_id> <peer_pubkey>`");
+ continue;
+ }
+ let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
+ if channel_id_vec.is_none() || channel_id_vec.as_ref().unwrap().len() != 32 {
+ println!("ERROR: couldn't parse channel_id");
+ continue;
+ }
+ let mut channel_id = [0; 32];
+ channel_id.copy_from_slice(&channel_id_vec.unwrap());
+
+ let peer_pubkey_str = words.next();
+ if peer_pubkey_str.is_none() {
+ println!("ERROR: forceclosechannel requires a peer pubkey: `forceclosechannel <channel_id> <peer_pubkey>`");
+ continue;
+ }
+ let peer_pubkey_vec = match hex_utils::to_vec(peer_pubkey_str.unwrap()) {
+ Some(peer_pubkey_vec) => peer_pubkey_vec,
+ None => {
+ println!("ERROR: couldn't parse peer_pubkey");
+ continue;
+ }
+ };
+ let peer_pubkey = match PublicKey::from_slice(&peer_pubkey_vec) {
+ Ok(peer_pubkey) => peer_pubkey,
+ Err(_) => {
+ println!("ERROR: couldn't parse peer_pubkey");
+ continue;
+ }
+ };
+
+ force_close_channel(channel_id, peer_pubkey, channel_manager.clone());
+ }
+ "nodeinfo" => node_info(&channel_manager, &peer_manager),
+ "listpeers" => list_peers(peer_manager.clone()),
+ "signmessage" => {
+ const MSG_STARTPOS: usize = "signmessage".len() + 1;
+ if line.as_bytes().len() <= MSG_STARTPOS {
+ println!("ERROR: signmsg requires a message");
+ continue;
+ }
+ println!(
+ "{:?}",
+ lightning::util::message_signing::sign(
+ &line.as_bytes()[MSG_STARTPOS..],
+ &keys_manager.get_node_secret(Recipient::Node).unwrap()
+ )
+ );
+ }
+ "sendonionmessage" => {
+ let path_pks_str = words.next();
+ if path_pks_str.is_none() {
+ println!(
+ "ERROR: sendonionmessage requires at least one node id for the path"
+ );
+ continue;
+ }
+ let mut node_pks = Vec::new();
+ let mut errored = false;
+ for pk_str in path_pks_str.unwrap().split(",") {
+ let node_pubkey_vec = match hex_utils::to_vec(pk_str) {
+ Some(peer_pubkey_vec) => peer_pubkey_vec,
+ None => {
+ println!("ERROR: couldn't parse peer_pubkey");
+ errored = true;
+ break;
+ }
+ };
+ let node_pubkey = match PublicKey::from_slice(&node_pubkey_vec) {
+ Ok(peer_pubkey) => peer_pubkey,
+ Err(_) => {
+ println!("ERROR: couldn't parse peer_pubkey");
+ errored = true;
+ break;
+ }
+ };
+ node_pks.push(node_pubkey);
+ }
+ if errored {
+ continue;
+ }
+ let destination_pk = node_pks.pop().unwrap();
+ match onion_messenger.send_onion_message(
+ &node_pks,
+ Destination::Node(destination_pk),
+ None,
+ ) {
+ Ok(()) => println!("SUCCESS: forwarded onion message to first hop"),
+ Err(e) => println!("ERROR: failed to send onion message: {:?}", e),
+ }
+ }
+ _ => println!("Unknown command. See `\"help\" for available commands."),
+ }
+ }
+ }
+}
+
+fn help() {
+ println!("openchannel pubkey@host:port <amt_satoshis> [--public]");
+ println!("sendpayment <invoice>");
+ println!("keysend <dest_pubkey> <amt_msats>");
+ println!("getinvoice <amt_msats> <expiry_secs>");
+ println!("connectpeer pubkey@host:port");
+ println!("listchannels");
+ println!("listpayments");
+ println!("closechannel <channel_id> <peer_pubkey>");
+ println!("forceclosechannel <channel_id> <peer_pubkey>");
+ println!("nodeinfo");
+ println!("listpeers");
+ println!("signmessage <message>");
+ println!("sendonionmessage <node_id_1,node_id_2,..,destination_node_id>");
+}
+
+fn node_info(channel_manager: &Arc<ChannelManager>, peer_manager: &Arc<PeerManager>) {
+ println!("\t{{");
+ println!("\t\t node_pubkey: {}", channel_manager.get_our_node_id());
+ let chans = channel_manager.list_channels();
+ println!("\t\t num_channels: {}", chans.len());
+ println!("\t\t num_usable_channels: {}", chans.iter().filter(|c| c.is_usable).count());
+ let local_balance_msat = chans.iter().map(|c| c.balance_msat).sum::<u64>();
+ println!("\t\t local_balance_msat: {}", local_balance_msat);
+ println!("\t\t num_peers: {}", peer_manager.get_peer_node_ids().len());
+ println!("\t}},");
+}
+
+fn list_peers(peer_manager: Arc<PeerManager>) {
+ println!("\t{{");
+ for pubkey in peer_manager.get_peer_node_ids() {
+ println!("\t\t pubkey: {}", pubkey);
+ }
+ println!("\t}},");
+}
+
+fn list_channels(channel_manager: &Arc<ChannelManager>, network_graph: &Arc<NetworkGraph>) {
+ print!("[");
+ for chan_info in channel_manager.list_channels() {
+ println!("");
+ println!("\t{{");
+ println!("\t\tchannel_id: {},", hex_utils::hex_str(&chan_info.channel_id[..]));
+ if let Some(funding_txo) = chan_info.funding_txo {
+ println!("\t\tfunding_txid: {},", funding_txo.txid);
+ }
+
+ println!(
+ "\t\tpeer_pubkey: {},",
+ hex_utils::hex_str(&chan_info.counterparty.node_id.serialize())
+ );
+ if let Some(node_info) = network_graph
+ .read_only()
+ .nodes()
+ .get(&NodeId::from_pubkey(&chan_info.counterparty.node_id))
+ {
+ if let Some(announcement) = &node_info.announcement_info {
+ println!("\t\tpeer_alias: {}", announcement.alias);
+ }
+ }
+
+ if let Some(id) = chan_info.short_channel_id {
+ println!("\t\tshort_channel_id: {},", id);
+ }
+ println!("\t\tis_channel_ready: {},", chan_info.is_channel_ready);
+ println!("\t\tchannel_value_satoshis: {},", chan_info.channel_value_satoshis);
+ println!("\t\tlocal_balance_msat: {},", chan_info.balance_msat);
+ if chan_info.is_usable {
+ println!("\t\tavailable_balance_for_send_msat: {},", chan_info.outbound_capacity_msat);
+ println!("\t\tavailable_balance_for_recv_msat: {},", chan_info.inbound_capacity_msat);
+ }
+ println!("\t\tchannel_can_send_payments: {},", chan_info.is_usable);
+ println!("\t\tpublic: {},", chan_info.is_public);
+ println!("\t}},");
+ }
+ println!("]");
+}
+
+fn list_payments(inbound_payments: PaymentInfoStorage, outbound_payments: PaymentInfoStorage) {
+ let inbound = inbound_payments.lock().unwrap();
+ let outbound = outbound_payments.lock().unwrap();
+ print!("[");
+ for (payment_hash, payment_info) in inbound.deref() {
+ println!("");
+ println!("\t{{");
+ println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
+ println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
+ println!("\t\thtlc_direction: inbound,");
+ println!(
+ "\t\thtlc_status: {},",
+ match payment_info.status {
+ HTLCStatus::Pending => "pending",
+ HTLCStatus::Succeeded => "succeeded",
+ HTLCStatus::Failed => "failed",
+ }
+ );
+
+ println!("\t}},");
+ }
+
+ for (payment_hash, payment_info) in outbound.deref() {
+ println!("");
+ println!("\t{{");
+ println!("\t\tamount_millisatoshis: {},", payment_info.amt_msat);
+ println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0));
+ println!("\t\thtlc_direction: outbound,");
+ println!(
+ "\t\thtlc_status: {},",
+ match payment_info.status {
+ HTLCStatus::Pending => "pending",
+ HTLCStatus::Succeeded => "succeeded",
+ HTLCStatus::Failed => "failed",
+ }
+ );
+
+ println!("\t}},");
+ }
+ println!("]");
+}
+
+pub(crate) async fn connect_peer_if_necessary(
+ pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
+) -> Result<(), ()> {
+ for node_pubkey in peer_manager.get_peer_node_ids() {
+ if node_pubkey == pubkey {
+ return Ok(());
+ }
+ }
+ let res = do_connect_peer(pubkey, peer_addr, peer_manager).await;
+ if res.is_err() {
+ println!("ERROR: failed to connect to peer");
+ }
+ res
+}
+
+pub(crate) async fn do_connect_peer(
+ pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
+) -> Result<(), ()> {
+ match lightning_net_tokio::connect_outbound(Arc::clone(&peer_manager), pubkey, peer_addr).await
+ {
+ Some(connection_closed_future) => {
+ let mut connection_closed_future = Box::pin(connection_closed_future);
+ loop {
+ match futures::poll!(&mut connection_closed_future) {
+ std::task::Poll::Ready(_) => {
+ return Err(());
+ }
+ std::task::Poll::Pending => {}
+ }
+ // Avoid blocking the tokio context by sleeping a bit
+ match peer_manager.get_peer_node_ids().iter().find(|id| **id == pubkey) {
+ Some(_) => return Ok(()),
+ None => tokio::time::sleep(Duration::from_millis(10)).await,
+ }
+ }
+ }
+ None => Err(()),
+ }
+}
+
+fn open_channel(
+ peer_pubkey: PublicKey, channel_amt_sat: u64, announced_channel: bool,
+ channel_manager: Arc<ChannelManager>,
+) -> Result<(), ()> {
+ let config = UserConfig {
+ channel_handshake_limits: ChannelHandshakeLimits {
+ // lnd's max to_self_delay is 2016, so we want to be compatible.
+ their_to_self_delay: 2016,
+ ..Default::default()
+ },
+ channel_handshake_config: ChannelHandshakeConfig {
+ announced_channel,
+ ..Default::default()
+ },
+ ..Default::default()
+ };
+
+ match channel_manager.create_channel(peer_pubkey, channel_amt_sat, 0, 0, Some(config)) {
+ Ok(_) => {
+ println!("EVENT: initiated channel with peer {}. ", peer_pubkey);
+ return Ok(());
+ }
+ Err(e) => {
+ println!("ERROR: failed to open channel: {:?}", e);
+ return Err(());
+ }
+ }
+}
+
+fn send_payment<E: EventHandler>(
+ invoice_payer: &InvoicePayer<E>, invoice: &Invoice, payment_storage: PaymentInfoStorage,
+) {
+ let status = match invoice_payer.pay_invoice(invoice) {
+ Ok(_payment_id) => {
+ let payee_pubkey = invoice.recover_payee_pub_key();
+ let amt_msat = invoice.amount_milli_satoshis().unwrap();
+ println!("EVENT: initiated sending {} msats to {}", amt_msat, payee_pubkey);
+ print!("> ");
+ HTLCStatus::Pending
+ }
+ Err(PaymentError::Invoice(e)) => {
+ println!("ERROR: invalid invoice: {}", e);
+ print!("> ");
+ return;
+ }
+ Err(PaymentError::Routing(e)) => {
+ println!("ERROR: failed to find route: {}", e.err);
+ print!("> ");
+ return;
+ }
+ Err(PaymentError::Sending(e)) => {
+ println!("ERROR: failed to send payment: {:?}", e);
+ print!("> ");
+ HTLCStatus::Failed
+ }
+ };
+ let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
+ let payment_secret = Some(invoice.payment_secret().clone());
+
+ let mut payments = payment_storage.lock().unwrap();
+ payments.insert(
+ payment_hash,
+ PaymentInfo {
+ preimage: None,
+ secret: payment_secret,
+ status,
+ amt_msat: MillisatAmount(invoice.amount_milli_satoshis()),
+ },
+ );
+}
+
+fn keysend<E: EventHandler, K: KeysInterface>(
+ invoice_payer: &InvoicePayer<E>, payee_pubkey: PublicKey, amt_msat: u64, keys: &K,
+ payment_storage: PaymentInfoStorage,
+) {
+ let payment_preimage = keys.get_secure_random_bytes();
+
+ let status = match invoice_payer.pay_pubkey(
+ payee_pubkey,
+ PaymentPreimage(payment_preimage),
+ amt_msat,
+ 40,
+ ) {
+ Ok(_payment_id) => {
+ println!("EVENT: initiated sending {} msats to {}", amt_msat, payee_pubkey);
+ print!("> ");
+ HTLCStatus::Pending
+ }
+ Err(PaymentError::Invoice(e)) => {
+ println!("ERROR: invalid payee: {}", e);
+ print!("> ");
+ return;
+ }
+ Err(PaymentError::Routing(e)) => {
+ println!("ERROR: failed to find route: {}", e.err);
+ print!("> ");
+ return;
+ }
+ Err(PaymentError::Sending(e)) => {
+ println!("ERROR: failed to send payment: {:?}", e);
+ print!("> ");
+ HTLCStatus::Failed
+ }
+ };
+
+ let mut payments = payment_storage.lock().unwrap();
+ payments.insert(
+ PaymentHash(Sha256::hash(&payment_preimage).into_inner()),
+ PaymentInfo {
+ preimage: None,
+ secret: None,
+ status,
+ amt_msat: MillisatAmount(Some(amt_msat)),
+ },
+ );
+}
+
+fn get_invoice(
+ amt_msat: u64, payment_storage: PaymentInfoStorage, channel_manager: Arc<ChannelManager>,
+ keys_manager: Arc<KeysManager>, network: Network, expiry_secs: u32,
+) {
+ let mut payments = payment_storage.lock().unwrap();
+ let currency = match network {
+ Network::Bitcoin => Currency::Bitcoin,
+ Network::Testnet => Currency::BitcoinTestnet,
+ Network::Regtest => Currency::Regtest,
+ Network::Signet => Currency::Signet,
+ };
+ let invoice = match utils::create_invoice_from_channelmanager(
+ &channel_manager,
+ keys_manager,
+ currency,
+ Some(amt_msat),
+ "ldk-tutorial-node".to_string(),
+ expiry_secs,
+ ) {
+ Ok(inv) => {
+ println!("SUCCESS: generated invoice: {}", inv);
+ inv
+ }
+ Err(e) => {
+ println!("ERROR: failed to create invoice: {:?}", e);
+ return;
+ }
+ };
+
+ let payment_hash = PaymentHash(invoice.payment_hash().clone().into_inner());
+ payments.insert(
+ payment_hash,
+ PaymentInfo {
+ preimage: None,
+ secret: Some(invoice.payment_secret().clone()),
+ status: HTLCStatus::Pending,
+ amt_msat: MillisatAmount(Some(amt_msat)),
+ },
+ );
+}
+
+fn close_channel(
+ channel_id: [u8; 32], counterparty_node_id: PublicKey, channel_manager: Arc<ChannelManager>,
+) {
+ match channel_manager.close_channel(&channel_id, &counterparty_node_id) {
+ Ok(()) => println!("EVENT: initiating channel close"),
+ Err(e) => println!("ERROR: failed to close channel: {:?}", e),
+ }
+}
+
+fn force_close_channel(
+ channel_id: [u8; 32], counterparty_node_id: PublicKey, channel_manager: Arc<ChannelManager>,
+) {
+ match channel_manager.force_close_broadcasting_latest_txn(&channel_id, &counterparty_node_id) {
+ Ok(()) => println!("EVENT: initiating channel force-close"),
+ Err(e) => println!("ERROR: failed to force-close channel: {:?}", e),
+ }
+}
+
+pub(crate) fn parse_peer_info(
+ peer_pubkey_and_ip_addr: String,
+) -> Result<(PublicKey, SocketAddr), std::io::Error> {
+ let mut pubkey_and_addr = peer_pubkey_and_ip_addr.split("@");
+ let pubkey = pubkey_and_addr.next();
+ let peer_addr_str = pubkey_and_addr.next();
+ if peer_addr_str.is_none() {
+ return Err(std::io::Error::new(
+ std::io::ErrorKind::Other,
+ "ERROR: incorrectly formatted peer info. Should be formatted as: `pubkey@host:port`",
+ ));
+ }
+
+ let peer_addr = peer_addr_str.unwrap().to_socket_addrs().map(|mut r| r.next());
+ if peer_addr.is_err() || peer_addr.as_ref().unwrap().is_none() {
+ return Err(std::io::Error::new(
+ std::io::ErrorKind::Other,
+ "ERROR: couldn't parse pubkey@host:port into a socket address",
+ ));
+ }
+
+ let pubkey = hex_utils::to_compressed_pubkey(pubkey.unwrap());
+ if pubkey.is_none() {
+ return Err(std::io::Error::new(
+ std::io::ErrorKind::Other,
+ "ERROR: unable to parse given pubkey for node",
+ ));
+ }
+
+ Ok((pubkey.unwrap(), peer_addr.unwrap().unwrap()))
}