X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=src%2Fcli.rs;h=e2f4a6379235c0d6da53a0a5d7464993983189b1;hb=5ec1c3f55f5c6794972846ccbe6dc67440313dab;hp=c046d0cf6fe4771d0e7427b3c25c236a6ee112e5;hpb=1b034d63a4cb4e0b249ae6240166513b6be76737;p=ldk-sample

diff --git a/src/cli.rs b/src/cli.rs
index c046d0c..e2f4a63 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -1,100 +1,689 @@
-use bitcoin::secp256k1::key::PublicKey;
-use crate::{FilesystemLogger, PeerManager, ChannelManager};
-use crate::utils;
+use crate::disk;
+use crate::hex_utils;
+use crate::{
+	ChannelManager, FilesystemLogger, HTLCDirection, HTLCStatus, MillisatAmount, PaymentInfo,
+	PaymentInfoStorage, PeerManager,
+};
+use bitcoin::hashes::sha256::Hash as Sha256Hash;
+use bitcoin::hashes::Hash;
+use bitcoin::network::constants::Network;
+use bitcoin::secp256k1::key::{PublicKey, SecretKey};
+use bitcoin::secp256k1::Secp256k1;
+use lightning::chain;
+use lightning::ln::channelmanager::{PaymentHash, PaymentPreimage, PaymentSecret};
+use lightning::ln::features::InvoiceFeatures;
+use lightning::routing::network_graph::{NetGraphMsgHandler, RoutingFees};
+use lightning::routing::router;
+use lightning::routing::router::RouteHint;
+use lightning::util::config::UserConfig;
+use rand;
+use rand::Rng;
+use std::env;
 use std::io;
 use std::io::{BufRead, Write};
 use std::net::{SocketAddr, TcpStream};
+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();
-
-    }
+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) network: Network,
 }
 
-fn handle_help() {
-    println!("")
+pub(crate) fn parse_startup_args() -> Result<LdkUserInfo, ()> {
+	if env::args().len() < 4 {
+		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]`");
+		return Err(());
+	}
+	let bitcoind_rpc_info = env::args().skip(1).next().unwrap();
+	let bitcoind_rpc_info_parts: Vec<&str> = bitcoind_rpc_info.split("@").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[0].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[1].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(e)) => panic!(e),
+		None => {
+			ldk_peer_port_set = false;
+			9735
+		}
+	};
+
+	let 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(_) => panic!("Unsupported network provided. Options are: `regtest`, `testnet`"),
+		None => Network::Testnet,
+	};
+	Ok(LdkUserInfo {
+		bitcoind_rpc_username,
+		bitcoind_rpc_password,
+		bitcoind_rpc_host,
+		bitcoind_rpc_port,
+		ldk_storage_dir_path,
+		ldk_peer_listening_port,
+		network,
+	})
+}
+
+pub(crate) async fn poll_for_user_input(
+	peer_manager: Arc<PeerManager>, channel_manager: Arc<ChannelManager>,
+	router: Arc<NetGraphMsgHandler<Arc<dyn chain::Access>, Arc<FilesystemLogger>>>,
+	payment_storage: PaymentInfoStorage, node_privkey: SecretKey, event_notifier: mpsc::Sender<()>,
+	ldk_data_dir: String, logger: Arc<FilesystemLogger>, network: Network,
+) {
+	println!("LDK startup successful. To view available commands: \"help\".\nLDK logs are available at <your-supplied-ldk-data-dir-path>/.ldk/logs");
+	let stdin = io::stdin();
+	print!("> ");
+	io::stdout().flush().unwrap(); // Without flushing, the `>` doesn't print
+	for line in stdin.lock().lines() {
+		let _ = event_notifier.try_send(());
+		let line = line.unwrap();
+		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]");
+						print!("> ");
+						io::stdout().flush().unwrap();
+						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());
+								print!("> ");
+								io::stdout().flush().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");
+						print!("> ");
+						io::stdout().flush().unwrap();
+						continue;
+					}
+
+					if connect_peer_if_necessary(
+						pubkey,
+						peer_addr,
+						peer_manager.clone(),
+						event_notifier.clone(),
+					)
+					.is_err()
+					{
+						print!("> ");
+						io::stdout().flush().unwrap();
+						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`");
+							print!("> ");
+							io::stdout().flush().unwrap();
+							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>`");
+						print!("> ");
+						io::stdout().flush().unwrap();
+						continue;
+					}
+
+					let invoice_res = lightning_invoice::Invoice::from_str(invoice_str.unwrap());
+					if invoice_res.is_err() {
+						println!("ERROR: invalid invoice: {:?}", invoice_res.unwrap_err());
+						print!("> ");
+						io::stdout().flush().unwrap();
+						continue;
+					}
+					let invoice = invoice_res.unwrap();
+					let route_hints: Vec<lightning_invoice::Route> =
+						invoice.routes().iter().map(|&route| route.clone()).collect();
+
+					let amt_pico_btc = invoice.amount_pico_btc();
+					if amt_pico_btc.is_none() {
+						println!("ERROR: invalid invoice: must contain amount to pay");
+						print!("> ");
+						io::stdout().flush().unwrap();
+						continue;
+					}
+					let amt_msat = amt_pico_btc.unwrap() / 10;
+
+					let payee_pubkey = invoice.recover_payee_pub_key();
+					let final_cltv = *invoice.min_final_cltv_expiry().unwrap_or(&9) as u32;
+
+					let mut payment_hash = PaymentHash([0; 32]);
+					payment_hash.0.copy_from_slice(&invoice.payment_hash().as_ref()[0..32]);
+
+					let payment_secret = match invoice.payment_secret() {
+						Some(secret) => {
+							let mut payment_secret = PaymentSecret([0; 32]);
+							payment_secret.0.copy_from_slice(&secret.0);
+							Some(payment_secret)
+						}
+						None => None,
+					};
+
+					// rust-lightning-invoice doesn't currently support features, so we parse features
+					// manually from the invoice.
+					let mut invoice_features = InvoiceFeatures::empty();
+					for field in &invoice.into_signed_raw().raw_invoice().data.tagged_fields {
+						match field {
+							lightning_invoice::RawTaggedField::UnknownSemantics(vec) => {
+								if vec[0] == bech32::u5::try_from_u8(5).unwrap() {
+									if vec.len() >= 6 && vec[5].to_u8() & 0b10000 != 0 {
+										invoice_features =
+											invoice_features.set_variable_length_onion_optional();
+									}
+									if vec.len() >= 6 && vec[5].to_u8() & 0b01000 != 0 {
+										invoice_features =
+											invoice_features.set_variable_length_onion_required();
+									}
+									if vec.len() >= 4 && vec[3].to_u8() & 0b00001 != 0 {
+										invoice_features =
+											invoice_features.set_payment_secret_optional();
+									}
+									if vec.len() >= 5 && vec[4].to_u8() & 0b10000 != 0 {
+										invoice_features =
+											invoice_features.set_payment_secret_required();
+									}
+									if vec.len() >= 4 && vec[3].to_u8() & 0b00100 != 0 {
+										invoice_features =
+											invoice_features.set_basic_mpp_optional();
+									}
+									if vec.len() >= 4 && vec[3].to_u8() & 0b00010 != 0 {
+										invoice_features =
+											invoice_features.set_basic_mpp_required();
+									}
+								}
+							}
+							_ => {}
+						}
+					}
+					let invoice_features_opt = match invoice_features == InvoiceFeatures::empty() {
+						true => None,
+						false => Some(invoice_features),
+					};
+					send_payment(
+						payee_pubkey,
+						amt_msat,
+						final_cltv,
+						payment_hash,
+						payment_secret,
+						invoice_features_opt,
+						route_hints,
+						router.clone(),
+						channel_manager.clone(),
+						payment_storage.clone(),
+						logger.clone(),
+					);
+				}
+				"getinvoice" => {
+					let amt_str = words.next();
+					if amt_str.is_none() {
+						println!("ERROR: getinvoice requires an amount in millisatoshis");
+						print!("> ");
+						io::stdout().flush().unwrap();
+						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");
+						print!("> ");
+						io::stdout().flush().unwrap();
+						continue;
+					}
+					get_invoice(
+						amt_msat.unwrap(),
+						payment_storage.clone(),
+						node_privkey.clone(),
+						channel_manager.clone(),
+						network,
+					);
+				}
+				"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`");
+						print!("> ");
+						io::stdout().flush().unwrap();
+						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());
+								print!("> ");
+								io::stdout().flush().unwrap();
+								continue;
+							}
+						};
+					if connect_peer_if_necessary(
+						pubkey,
+						peer_addr,
+						peer_manager.clone(),
+						event_notifier.clone(),
+					)
+					.is_ok()
+					{
+						println!("SUCCESS: connected to peer {}", pubkey);
+					}
+				}
+				"listchannels" => list_channels(channel_manager.clone()),
+				"listpayments" => list_payments(payment_storage.clone()),
+				"closechannel" => {
+					let channel_id_str = words.next();
+					if channel_id_str.is_none() {
+						println!("ERROR: closechannel requires a channel ID: `closechannel <channel_id>`");
+						print!("> ");
+						io::stdout().flush().unwrap();
+						continue;
+					}
+					let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
+					if channel_id_vec.is_none() {
+						println!("ERROR: couldn't parse channel_id as hex");
+						print!("> ");
+						io::stdout().flush().unwrap();
+						continue;
+					}
+					let mut channel_id = [0; 32];
+					channel_id.copy_from_slice(&channel_id_vec.unwrap());
+					close_channel(channel_id, 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>`");
+						print!("> ");
+						io::stdout().flush().unwrap();
+						continue;
+					}
+					let channel_id_vec = hex_utils::to_vec(channel_id_str.unwrap());
+					if channel_id_vec.is_none() {
+						println!("ERROR: couldn't parse channel_id as hex");
+						print!("> ");
+						io::stdout().flush().unwrap();
+						continue;
+					}
+					let mut channel_id = [0; 32];
+					channel_id.copy_from_slice(&channel_id_vec.unwrap());
+					force_close_channel(channel_id, channel_manager.clone());
+				}
+				_ => println!("Unknown command. See `\"help\" for available commands."),
+			}
+		}
+		print!("> ");
+		io::stdout().flush().unwrap();
+	}
+}
+
+fn help() {
+	println!("openchannel pubkey@host:port <channel_amt_satoshis>");
+	println!("sendpayment <invoice>");
+	println!("getinvoice <amt_in_millisatoshis>");
+	println!("connectpeer pubkey@host:port");
+	println!("listchannels");
+	println!("listpayments");
+	println!("closechannel <channel_id>");
+	println!("forceclosechannel <channel_id>");
+}
+
+fn list_channels(channel_manager: Arc<ChannelManager>) {
+	print!("[");
+	for chan_info in channel_manager.list_channels() {
+		println!("");
+		println!("\t{{");
+		println!("\t\tchannel_id: {},", hex_utils::hex_str(&chan_info.channel_id[..]));
+		println!(
+			"\t\tpeer_pubkey: {},",
+			hex_utils::hex_str(&chan_info.remote_network_id.serialize())
+		);
+		let mut pending_channel = false;
+		match chan_info.short_channel_id {
+			Some(id) => println!("\t\tshort_channel_id: {},", id),
+			None => {
+				pending_channel = true;
+			}
+		}
+		println!("\t\tpending_open: {},", pending_channel);
+		println!("\t\tchannel_value_satoshis: {},", chan_info.channel_value_satoshis);
+		println!("\t\tchannel_can_send_payments: {},", chan_info.is_live);
+		println!("\t}},");
+	}
+	println!("]");
+}
+
+fn list_payments(payment_storage: PaymentInfoStorage) {
+	let payments = payment_storage.lock().unwrap();
+	print!("[");
+	for (payment_hash, payment_info) in payments.deref() {
+		let direction_str = match payment_info.direction {
+			HTLCDirection::Inbound => "inbound",
+			HTLCDirection::Outbound => "outbound",
+		};
+		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: {},", direction_str);
+		println!(
+			"\t\thtlc_status: {},",
+			match payment_info.status {
+				HTLCStatus::Pending => "pending",
+				HTLCStatus::Succeeded => "succeeded",
+				HTLCStatus::Failed => "failed",
+			}
+		);
+
+		println!("\t}},");
+	}
+	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) fn connect_peer_if_necessary(
+	pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc<PeerManager>,
+	event_notifier: mpsc::Sender<()>,
+) -> Result<(), ()> {
+	for node_pubkey in peer_manager.get_peer_node_ids() {
+		if node_pubkey == pubkey {
+			return Ok(());
+		}
+	}
+	match TcpStream::connect_timeout(&peer_addr, Duration::from_secs(10)) {
+		Ok(stream) => {
+			let peer_mgr = peer_manager.clone();
+			let event_ntfns = event_notifier.clone();
+			tokio::spawn(async move {
+				lightning_net_tokio::setup_outbound(peer_mgr, event_ntfns, pubkey, stream).await;
+			});
+			let mut peer_connected = false;
+			while !peer_connected {
+				for node_pubkey in peer_manager.get_peer_node_ids() {
+					if node_pubkey == pubkey {
+						peer_connected = true;
+					}
+				}
+			}
+		}
+		Err(e) => {
+			println!("ERROR: failed to connect to peer: {:?}", e);
+			return Err(());
+		}
+	}
+	Ok(())
+}
+
+fn open_channel(
+	peer_pubkey: PublicKey, channel_amt_sat: u64, announce_channel: bool,
+	channel_manager: Arc<ChannelManager>,
+) -> Result<(), ()> {
+	let mut config = UserConfig::default();
+	if announce_channel {
+		config.channel_options.announced_channel = true;
+	}
+	// lnd's max to_self_delay is 2016, so we want to be compatible.
+	config.peer_channel_config_limits.their_to_self_delay = 2016;
+	match channel_manager.create_channel(peer_pubkey, channel_amt_sat, 0, 0, None) {
+		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(
+	payee: PublicKey, amt_msat: u64, final_cltv: u32, payment_hash: PaymentHash,
+	payment_secret: Option<PaymentSecret>, payee_features: Option<InvoiceFeatures>,
+	mut route_hints: Vec<lightning_invoice::Route>,
+	router: Arc<NetGraphMsgHandler<Arc<dyn chain::Access>, Arc<FilesystemLogger>>>,
+	channel_manager: Arc<ChannelManager>, payment_storage: PaymentInfoStorage,
+	logger: Arc<FilesystemLogger>,
+) {
+	let network_graph = router.network_graph.read().unwrap();
+	let first_hops = channel_manager.list_usable_channels();
+	let payer_pubkey = channel_manager.get_our_node_id();
+
+	let mut hints: Vec<RouteHint> = Vec::new();
+	for route in route_hints.drain(..) {
+		let route_hops = route.into_inner();
+		let last_hop = &route_hops[route_hops.len() - 1];
+		hints.push(RouteHint {
+			src_node_id: last_hop.pubkey,
+			short_channel_id: u64::from_be_bytes(last_hop.short_channel_id),
+			fees: RoutingFees {
+				base_msat: last_hop.fee_base_msat,
+				proportional_millionths: last_hop.fee_proportional_millionths,
+			},
+			cltv_expiry_delta: last_hop.cltv_expiry_delta,
+			htlc_minimum_msat: None,
+			htlc_maximum_msat: None,
+		})
+	}
+	let route = router::get_route(
+		&payer_pubkey,
+		&network_graph,
+		&payee,
+		payee_features,
+		Some(&first_hops.iter().collect::<Vec<_>>()),
+		&hints.iter().collect::<Vec<_>>(),
+		amt_msat,
+		final_cltv,
+		logger,
+	);
+	if let Err(e) = route {
+		println!("ERROR: failed to find route: {}", e.err);
+		return;
+	}
+	let status = match channel_manager.send_payment(&route.unwrap(), payment_hash, &payment_secret)
+	{
+		Ok(()) => {
+			println!("EVENT: initiated sending {} msats to {}", amt_msat, payee);
+			HTLCStatus::Pending
+		}
+		Err(e) => {
+			println!("ERROR: failed to send payment: {:?}", e);
+			HTLCStatus::Failed
+		}
+	};
+	let mut payments = payment_storage.lock().unwrap();
+	payments.insert(
+		payment_hash,
+		PaymentInfo {
+			preimage: None,
+			secret: payment_secret,
+			direction: HTLCDirection::Outbound,
+			status,
+			amt_msat: MillisatAmount(Some(amt_msat)),
+		},
+	);
+}
+
+fn get_invoice(
+	amt_msat: u64, payment_storage: PaymentInfoStorage, our_node_privkey: SecretKey,
+	channel_manager: Arc<ChannelManager>, network: Network,
+) {
+	let mut payments = payment_storage.lock().unwrap();
+	let secp_ctx = Secp256k1::new();
+
+	let mut preimage = [0; 32];
+	rand::thread_rng().fill_bytes(&mut preimage);
+	let payment_hash = Sha256Hash::hash(&preimage);
+
+	let our_node_pubkey = channel_manager.get_our_node_id();
+	let mut invoice = lightning_invoice::InvoiceBuilder::new(match network {
+		Network::Bitcoin => lightning_invoice::Currency::Bitcoin,
+		Network::Testnet => lightning_invoice::Currency::BitcoinTestnet,
+		Network::Regtest => lightning_invoice::Currency::Regtest,
+		Network::Signet => panic!("Signet invoices not supported"),
+	})
+	.payment_hash(payment_hash)
+	.description("rust-lightning-bitcoinrpc invoice".to_string())
+	.amount_pico_btc(amt_msat * 10)
+	.current_timestamp()
+	.payee_pub_key(our_node_pubkey);
+
+	// Add route hints to the invoice.
+	let our_channels = channel_manager.list_usable_channels();
+	let mut min_final_cltv_expiry = 9;
+	for channel in our_channels {
+		let short_channel_id = match channel.short_channel_id {
+			Some(id) => id.to_be_bytes(),
+			None => continue,
+		};
+		let forwarding_info = match channel.counterparty_forwarding_info {
+			Some(info) => info,
+			None => continue,
+		};
+		if forwarding_info.cltv_expiry_delta > min_final_cltv_expiry {
+			min_final_cltv_expiry = forwarding_info.cltv_expiry_delta;
+		}
+		invoice = invoice.route(vec![lightning_invoice::RouteHop {
+			pubkey: channel.remote_network_id,
+			short_channel_id,
+			fee_base_msat: forwarding_info.fee_base_msat,
+			fee_proportional_millionths: forwarding_info.fee_proportional_millionths,
+			cltv_expiry_delta: forwarding_info.cltv_expiry_delta,
+		}]);
+	}
+	invoice = invoice.min_final_cltv_expiry(min_final_cltv_expiry.into());
+
+	// Sign the invoice.
+	let invoice =
+		invoice.build_signed(|msg_hash| secp_ctx.sign_recoverable(msg_hash, &our_node_privkey));
+
+	match invoice {
+		Ok(invoice) => println!("SUCCESS: generated invoice: {}", invoice),
+		Err(e) => println!("ERROR: failed to create invoice: {:?}", e),
+	}
+
+	payments.insert(
+		PaymentHash(payment_hash.into_inner()),
+		PaymentInfo {
+			preimage: Some(PaymentPreimage(preimage)),
+			// We can't add payment secrets to invoices until we support features in invoices.
+			// Otherwise lnd errors with "destination hop doesn't understand payment addresses"
+			// (for context, lnd calls payment secrets "payment addresses").
+			secret: None,
+			direction: HTLCDirection::Inbound,
+			status: HTLCStatus::Pending,
+			amt_msat: MillisatAmount(Some(amt_msat)),
+		},
+	);
+}
+
+fn close_channel(channel_id: [u8; 32], channel_manager: Arc<ChannelManager>) {
+	match channel_manager.close_channel(&channel_id) {
+		Ok(()) => println!("EVENT: initiating channel close"),
+		Err(e) => println!("ERROR: failed to close channel: {:?}", e),
+	}
+}
+
+fn force_close_channel(channel_id: [u8; 32], channel_manager: Arc<ChannelManager>) {
+	match channel_manager.force_close_channel(&channel_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() || 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: Result<SocketAddr, _> = peer_addr_str.unwrap().parse();
+	if peer_addr.is_err() {
+		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()))
 }