From: Valentine Wallace Date: Fri, 19 Mar 2021 20:26:43 +0000 (-0400) Subject: add rustfmt + CI + other fixups X-Git-Url: http://git.bitcoin.ninja/?a=commitdiff_plain;h=d9e9c01d33f291cf4846c0406a3e00c9ecbd543d;p=ldk-sample add rustfmt + CI + other fixups --- diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml new file mode 100644 index 0000000..1a70ea0 --- /dev/null +++ b/.github/workflows/build.yml @@ -0,0 +1,27 @@ +name: Continuous Integration Checks + +on: [push, pull_request] + +jobs: + build: + strategy: + matrix: + toolchain: [ stable, beta ] + include: + - toolchain: stable + check-fmt: true + runs-on: ubuntu-latest + steps: + - name: Checkout source code + uses: actions/checkout@v2 + - name: Install Rust ${{ matrix.toolchain }} toolchain + uses: actions-rs/toolchain@v1 + with: + toolchain: ${{ matrix.toolchain }} + override: true + profile: minimal + - name: Build on Rust ${{ matrix.toolchain }} + run: cargo build --verbose --color always + - name: Check formatting + if: matrix.check-fmt + run: rustup component add rustfmt && cargo fmt --all -- --check diff --git a/README.md b/README.md index 4b9e99a..5dda263 100644 --- a/README.md +++ b/README.md @@ -11,13 +11,15 @@ git clone git@github.com:lightningdevkit/ldk-sample.git cd ldk-sample cargo run :@: [] [bitcoin-network] ``` +`bitcoind`'s RPC username and password likely can be found through `cat ~/.bitcoin/.cookie`. + `bitcoin-network`: defaults to `testnet`. Options: `testnet`, `regtest`. `ldk-peer-listening-port`: defaults to 9735. ## License -Licensed under either of +Licensed under either: * Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0) * MIT License ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT) diff --git a/rustfmt.toml b/rustfmt.toml new file mode 100644 index 0000000..c61104c --- /dev/null +++ b/rustfmt.toml @@ -0,0 +1,5 @@ +hard_tabs = true # use tab characters for indentation, spaces for alignment +use_field_init_shorthand = true +max_width = 100 +use_small_heuristics = "Max" +fn_args_layout = "Compressed" \ No newline at end of file diff --git a/src/bitcoind_client.rs b/src/bitcoind_client.rs index 71e6272..f18cd40 100644 --- a/src/bitcoind_client.rs +++ b/src/bitcoind_client.rs @@ -1,8 +1,8 @@ +use crate::convert::{BlockchainInfo, FeeResponse, FundedTx, NewAddress, RawTx, SignedTx}; use base64; use bitcoin::blockdata::transaction::Transaction; use bitcoin::consensus::encode; use bitcoin::util::address::Address; -use crate::convert::{BlockchainInfo, FeeResponse, FundedTx, NewAddress, RawTx, SignedTx}; use lightning::chain::chaininterface::{BroadcasterInterface, ConfirmationTarget, FeeEstimator}; use lightning_block_sync::http::HttpEndpoint; use lightning_block_sync::rpc::RpcClient; @@ -13,137 +13,150 @@ use std::sync::Mutex; use tokio::runtime::{Handle, Runtime}; pub struct BitcoindClient { - bitcoind_rpc_client: Mutex, - host: String, - port: u16, - rpc_user: String, - rpc_password: String, - runtime: Mutex, + bitcoind_rpc_client: Mutex, + host: String, + port: u16, + rpc_user: String, + rpc_password: String, + runtime: Mutex, } impl BitcoindClient { - pub fn new(host: String, port: u16, rpc_user: String, rpc_password: String) -> - std::io::Result - { - let http_endpoint = HttpEndpoint::for_host(host.clone()).with_port(port); - let rpc_credentials = base64::encode(format!("{}:{}", rpc_user.clone(), - rpc_password.clone())); - let bitcoind_rpc_client = RpcClient::new(&rpc_credentials, http_endpoint)?; - let client = Self { - bitcoind_rpc_client: Mutex::new(bitcoind_rpc_client), - host, - port, - rpc_user, - rpc_password, - runtime: Mutex::new(Runtime::new().unwrap()), - }; - Ok(client) - } - - pub fn get_new_rpc_client(&self) -> std::io::Result { - let http_endpoint = HttpEndpoint::for_host(self.host.clone()).with_port(self.port); - let rpc_credentials = base64::encode(format!("{}:{}", - self.rpc_user.clone(), - self.rpc_password.clone())); - RpcClient::new(&rpc_credentials, http_endpoint) - } - - pub fn create_raw_transaction(&self, outputs: Vec>) -> RawTx { - let runtime = self.runtime.lock().unwrap(); - let mut rpc = self.bitcoind_rpc_client.lock().unwrap(); - - let outputs_json = serde_json::json!(outputs); - runtime.block_on(rpc.call_method::("createrawtransaction", &vec![serde_json::json!([]), outputs_json])).unwrap() - } - - pub fn fund_raw_transaction(&self, raw_tx: RawTx) -> FundedTx { - let runtime = self.runtime.lock().unwrap(); - let mut rpc = self.bitcoind_rpc_client.lock().unwrap(); - - let raw_tx_json = serde_json::json!(raw_tx.0); - runtime.block_on(rpc.call_method("fundrawtransaction", &[raw_tx_json])).unwrap() - } - - pub fn sign_raw_transaction_with_wallet(&self, tx_hex: String) -> SignedTx { - let runtime = self.runtime.lock().unwrap(); - let mut rpc = self.bitcoind_rpc_client.lock().unwrap(); - - let tx_hex_json = serde_json::json!(tx_hex); - runtime.block_on(rpc.call_method("signrawtransactionwithwallet", - &vec![tx_hex_json])).unwrap() - } - - pub fn get_new_address(&self) -> Address { - let runtime = self.runtime.lock().unwrap(); - let mut rpc = self.bitcoind_rpc_client.lock().unwrap(); - - let addr_args = vec![serde_json::json!("LDK output address")]; - let addr = runtime.block_on(rpc.call_method::("getnewaddress", &addr_args)).unwrap(); - Address::from_str(addr.0.as_str()).unwrap() - } - - pub fn get_blockchain_info(&self) -> BlockchainInfo { - let runtime = self.runtime.lock().unwrap(); - let mut rpc = self.bitcoind_rpc_client.lock().unwrap(); - - runtime.block_on(rpc.call_method::("getblockchaininfo", - &vec![])).unwrap() - } + pub fn new( + host: String, port: u16, rpc_user: String, rpc_password: String, + ) -> std::io::Result { + let http_endpoint = HttpEndpoint::for_host(host.clone()).with_port(port); + let rpc_credentials = + base64::encode(format!("{}:{}", rpc_user.clone(), rpc_password.clone())); + let bitcoind_rpc_client = RpcClient::new(&rpc_credentials, http_endpoint)?; + let client = Self { + bitcoind_rpc_client: Mutex::new(bitcoind_rpc_client), + host, + port, + rpc_user, + rpc_password, + runtime: Mutex::new(Runtime::new().unwrap()), + }; + Ok(client) + } + + pub fn get_new_rpc_client(&self) -> std::io::Result { + let http_endpoint = HttpEndpoint::for_host(self.host.clone()).with_port(self.port); + let rpc_credentials = + base64::encode(format!("{}:{}", self.rpc_user.clone(), self.rpc_password.clone())); + RpcClient::new(&rpc_credentials, http_endpoint) + } + + pub fn create_raw_transaction(&self, outputs: Vec>) -> RawTx { + let runtime = self.runtime.lock().unwrap(); + let mut rpc = self.bitcoind_rpc_client.lock().unwrap(); + + let outputs_json = serde_json::json!(outputs); + runtime + .block_on(rpc.call_method::( + "createrawtransaction", + &vec![serde_json::json!([]), outputs_json], + )) + .unwrap() + } + + pub fn fund_raw_transaction(&self, raw_tx: RawTx) -> FundedTx { + let runtime = self.runtime.lock().unwrap(); + let mut rpc = self.bitcoind_rpc_client.lock().unwrap(); + + let raw_tx_json = serde_json::json!(raw_tx.0); + runtime.block_on(rpc.call_method("fundrawtransaction", &[raw_tx_json])).unwrap() + } + + pub fn sign_raw_transaction_with_wallet(&self, tx_hex: String) -> SignedTx { + let runtime = self.runtime.lock().unwrap(); + let mut rpc = self.bitcoind_rpc_client.lock().unwrap(); + + let tx_hex_json = serde_json::json!(tx_hex); + runtime + .block_on(rpc.call_method("signrawtransactionwithwallet", &vec![tx_hex_json])) + .unwrap() + } + + pub fn get_new_address(&self) -> Address { + let runtime = self.runtime.lock().unwrap(); + let mut rpc = self.bitcoind_rpc_client.lock().unwrap(); + + let addr_args = vec![serde_json::json!("LDK output address")]; + let addr = + runtime.block_on(rpc.call_method::("getnewaddress", &addr_args)).unwrap(); + Address::from_str(addr.0.as_str()).unwrap() + } + + pub fn get_blockchain_info(&self) -> BlockchainInfo { + let runtime = self.runtime.lock().unwrap(); + let mut rpc = self.bitcoind_rpc_client.lock().unwrap(); + + runtime.block_on(rpc.call_method::("getblockchaininfo", &vec![])).unwrap() + } } impl FeeEstimator for BitcoindClient { - fn get_est_sat_per_1000_weight(&self, confirmation_target: ConfirmationTarget) -> u32 { - let runtime = self.runtime.lock().unwrap(); - let mut rpc = self.bitcoind_rpc_client.lock().unwrap(); - - let (conf_target, estimate_mode, default) = match confirmation_target { - ConfirmationTarget::Background => (144, "ECONOMICAL", 253), - ConfirmationTarget::Normal => (18, "ECONOMICAL", 20000), - ConfirmationTarget::HighPriority => (6, "ECONOMICAL", 50000), - }; - - // This function may be called from a tokio runtime, or not. So we need to check before - // making the call to avoid the error "cannot run a tokio runtime from within a tokio runtime". - let conf_target_json = serde_json::json!(conf_target); - let estimate_mode_json = serde_json::json!(estimate_mode); - let resp = match Handle::try_current() { - Ok(_) => { - tokio::task::block_in_place(|| { - runtime.block_on(rpc.call_method::("estimatesmartfee", - &vec![conf_target_json, - estimate_mode_json])).unwrap() - }) - }, - _ => runtime.block_on(rpc.call_method::("estimatesmartfee", - &vec![conf_target_json, - estimate_mode_json])).unwrap() - }; - if resp.errored { - return default - } - resp.feerate.unwrap() - } + fn get_est_sat_per_1000_weight(&self, confirmation_target: ConfirmationTarget) -> u32 { + let runtime = self.runtime.lock().unwrap(); + let mut rpc = self.bitcoind_rpc_client.lock().unwrap(); + + let (conf_target, estimate_mode, default) = match confirmation_target { + ConfirmationTarget::Background => (144, "ECONOMICAL", 253), + ConfirmationTarget::Normal => (18, "ECONOMICAL", 20000), + ConfirmationTarget::HighPriority => (6, "ECONOMICAL", 50000), + }; + + // This function may be called from a tokio runtime, or not. So we need to check before + // making the call to avoid the error "cannot run a tokio runtime from within a tokio runtime". + let conf_target_json = serde_json::json!(conf_target); + let estimate_mode_json = serde_json::json!(estimate_mode); + let resp = match Handle::try_current() { + Ok(_) => tokio::task::block_in_place(|| { + runtime + .block_on(rpc.call_method::( + "estimatesmartfee", + &vec![conf_target_json, estimate_mode_json], + )) + .unwrap() + }), + _ => runtime + .block_on(rpc.call_method::( + "estimatesmartfee", + &vec![conf_target_json, estimate_mode_json], + )) + .unwrap(), + }; + if resp.errored { + return default; + } + resp.feerate.unwrap() + } } impl BroadcasterInterface for BitcoindClient { - fn broadcast_transaction(&self, tx: &Transaction) { - let mut rpc = self.bitcoind_rpc_client.lock().unwrap(); - let runtime = self.runtime.lock().unwrap(); - - let tx_serialized = serde_json::json!(encode::serialize_hex(tx)); - // This function may be called from a tokio runtime, or not. So we need to check before - // making the call to avoid the error "cannot run a tokio runtime from within a tokio runtime". - match Handle::try_current() { - Ok(_) => { - tokio::task::block_in_place(|| { - runtime.block_on(rpc.call_method::("sendrawtransaction", - &vec![tx_serialized])).unwrap(); - }); - }, - _ => { - runtime.block_on(rpc.call_method::("sendrawtransaction", - &vec![tx_serialized])).unwrap(); - } - } - } + fn broadcast_transaction(&self, tx: &Transaction) { + let mut rpc = self.bitcoind_rpc_client.lock().unwrap(); + let runtime = self.runtime.lock().unwrap(); + + let tx_serialized = serde_json::json!(encode::serialize_hex(tx)); + // This function may be called from a tokio runtime, or not. So we need to check before + // making the call to avoid the error "cannot run a tokio runtime from within a tokio runtime". + match Handle::try_current() { + Ok(_) => { + tokio::task::block_in_place(|| { + runtime + .block_on( + rpc.call_method::("sendrawtransaction", &vec![tx_serialized]), + ) + .unwrap(); + }); + } + _ => { + runtime + .block_on(rpc.call_method::("sendrawtransaction", &vec![tx_serialized])) + .unwrap(); + } + } + } } diff --git a/src/cli.rs b/src/cli.rs index 1e11086..21c4023 100644 --- a/src/cli.rs +++ b/src/cli.rs @@ -1,12 +1,14 @@ -use bitcoin::network::constants::Network; -use bitcoin::hashes::Hash; -use bitcoin::hashes::sha256::Hash as Sha256Hash; -use bitcoin::secp256k1::Secp256k1; -use bitcoin::secp256k1::key::{PublicKey, SecretKey}; -use crate::{ChannelManager, FilesystemLogger, HTLCDirection, HTLCStatus, - PaymentInfoStorage, PeerManager, SatoshiAmount}; use crate::disk; use crate::hex_utils; +use crate::{ + ChannelManager, FilesystemLogger, HTLCDirection, HTLCStatus, PaymentInfoStorage, PeerManager, + SatoshiAmount, +}; +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; @@ -28,501 +30,629 @@ use tokio::runtime::Handle; use tokio::sync::mpsc; 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, + 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, } pub(crate) fn parse_startup_args() -> Result { - if env::args().len() < 4 { - println!("ldk-tutorial-node requires 3 arguments: `cargo run :@: ldk_storage_directory_path [] [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::().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, - }) + if env::args().len() < 4 { + println!("ldk-tutorial-node requires 3 arguments: `cargo run :@: ldk_storage_directory_path [] [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::().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) fn poll_for_user_input(peer_manager: Arc, channel_manager: - Arc, router: Arc, Arc>>, payment_storage: - PaymentInfoStorage, node_privkey: SecretKey, event_notifier: - mpsc::Sender<()>, ldk_data_dir: String, logger: Arc, - runtime_handle: Handle, network: Network) { - println!("LDK startup successful. To view available commands: \"help\".\nLDK logs are available at /.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 takes 2 arguments: `openchannel pubkey@host:port channel_amt_satoshis`"); - 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 = 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(), - runtime_handle.clone()).is_err() { - print!("> "); io::stdout().flush().unwrap(); continue; - }; - - if open_channel(pubkey, chan_amt_sat.unwrap(), 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 `"); - 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 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, 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 satoshis"); - print!("> "); io::stdout().flush().unwrap(); continue; - } - - let amt_sat: Result = amt_str.unwrap().parse(); - if amt_sat.is_err() { - println!("ERROR: getinvoice provided payment amount was not a number"); - print!("> "); io::stdout().flush().unwrap(); continue; - } - get_invoice(amt_sat.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(), runtime_handle.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 `"); - 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 `"); - 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(); - - } +pub(crate) fn poll_for_user_input( + peer_manager: Arc, channel_manager: Arc, + router: Arc, Arc>>, + payment_storage: PaymentInfoStorage, node_privkey: SecretKey, event_notifier: mpsc::Sender<()>, + ldk_data_dir: String, logger: Arc, runtime_handle: Handle, network: Network, +) { + println!("LDK startup successful. To view available commands: \"help\".\nLDK logs are available at /.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 = 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(), + runtime_handle.clone(), + ) + .is_err() + { + print!("> "); + io::stdout().flush().unwrap(); + continue; + }; + + // let private_channel = match words.next().as_ref().map(String::as_str) { + let announce_channel = match words.next() { + Some("--public") | Some("--public=true") | Some("--public true") => true, + Some("--public=false") | Some("--public false") => false, + Some(_) => { + println!("ERROR: invalid `--public` command format"); + 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 `"); + 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 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, + 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 satoshis"); + print!("> "); + io::stdout().flush().unwrap(); + continue; + } + + let amt_sat: Result = amt_str.unwrap().parse(); + if amt_sat.is_err() { + println!("ERROR: getinvoice provided payment amount was not a number"); + print!("> "); + io::stdout().flush().unwrap(); + continue; + } + get_invoice( + amt_sat.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(), + runtime_handle.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 `"); + 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 `"); + 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 "); - println!("sendpayment "); - println!("getinvoice "); - println!("connectpeer pubkey@host:port"); - println!("listchannels"); - println!("listpayments"); - println!("closechannel "); - println!("forceclosechannel "); + println!("openchannel pubkey@host:port "); + println!("sendpayment "); + println!("getinvoice "); + println!("connectpeer pubkey@host:port"); + println!("listchannels"); + println!("listpayments"); + println!("closechannel "); + println!("forceclosechannel "); } fn list_channels(channel_manager: Arc) { - 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!("]"); + 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.1 { - HTLCDirection::Inbound => "inbound", - HTLCDirection::Outbound => "outbound", - }; - println!(""); - println!("\t{{"); - println!("\t\tamount_satoshis: {},", payment_info.3); - println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0)); - println!("\t\thtlc_direction: {},", direction_str); - println!("\t\thtlc_status: {},", match payment_info.2 { - HTLCStatus::Pending => "pending", - HTLCStatus::Succeeded => "succeeded", - HTLCStatus::Failed => "failed" - }); - - - println!("\t}},"); - } - println!("]"); -} - -pub(crate) fn connect_peer_if_necessary(pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: - Arc, event_notifier: mpsc::Sender<()>, runtime: Handle) -> - 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(); - runtime.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(()) + let payments = payment_storage.lock().unwrap(); + print!("["); + for (payment_hash, payment_info) in payments.deref() { + let direction_str = match payment_info.1 { + HTLCDirection::Inbound => "inbound", + HTLCDirection::Outbound => "outbound", + }; + println!(""); + println!("\t{{"); + println!("\t\tamount_satoshis: {},", payment_info.3); + println!("\t\tpayment_hash: {},", hex_utils::hex_str(&payment_hash.0)); + println!("\t\thtlc_direction: {},", direction_str); + println!( + "\t\thtlc_status: {},", + match payment_info.2 { + HTLCStatus::Pending => "pending", + HTLCStatus::Succeeded => "succeeded", + HTLCStatus::Failed => "failed", + } + ); + + println!("\t}},"); + } + println!("]"); } -fn open_channel(peer_pubkey: PublicKey, channel_amt_sat: u64, channel_manager: Arc) - -> Result<(), ()> { - let mut config = UserConfig::default(); - // 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(()) - } - } +pub(crate) fn connect_peer_if_necessary( + pubkey: PublicKey, peer_addr: SocketAddr, peer_manager: Arc, + event_notifier: mpsc::Sender<()>, runtime: Handle, +) -> 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(); + runtime.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 send_payment(payee: PublicKey, amt_msat: u64, final_cltv: u32, payment_hash: PaymentHash, - payment_secret: Option, payee_features: Option, - router: Arc, Arc>>, - channel_manager: Arc, payment_storage: PaymentInfoStorage, logger: - Arc) { - 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 route = router::get_route(&payer_pubkey, &network_graph, &payee, payee_features, - Some(&first_hops.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, (None, HTLCDirection::Outbound, status, - SatoshiAmount(Some(amt_msat * 1000)))); +fn open_channel( + peer_pubkey: PublicKey, channel_amt_sat: u64, announce_channel: bool, + channel_manager: Arc, +) -> 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 get_invoice(amt_sat: u64, payment_storage: PaymentInfoStorage, our_node_privkey: SecretKey, - channel_manager: Arc, 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_sat * 10_000) - .current_timestamp() - .payee_pub_key(our_node_pubkey); - - // Add route hints to the invoice. - let our_channels = channel_manager.list_usable_channels(); - 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, - }; - println!("VMW: adding routehop, info.fee base: {}", forwarding_info.fee_base_msat); - 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, - } - ]); - } - - // 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), +fn send_payment( + payee: PublicKey, amt_msat: u64, final_cltv: u32, payment_hash: PaymentHash, + payment_secret: Option, payee_features: Option, + router: Arc, Arc>>, + channel_manager: Arc, payment_storage: PaymentInfoStorage, + logger: Arc, +) { + 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 route = router::get_route( + &payer_pubkey, + &network_graph, + &payee, + payee_features, + Some(&first_hops.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, + (None, HTLCDirection::Outbound, status, SatoshiAmount(Some(amt_msat / 1000))), + ); +} - payments.insert(PaymentHash(payment_hash.into_inner()), (Some(PaymentPreimage(preimage)), - HTLCDirection::Inbound, - HTLCStatus::Pending, - SatoshiAmount(Some(amt_sat)))); +fn get_invoice( + amt_sat: u64, payment_storage: PaymentInfoStorage, our_node_privkey: SecretKey, + channel_manager: Arc, 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_sat * 10_000) + .current_timestamp() + .payee_pub_key(our_node_pubkey); + + // Add route hints to the invoice. + let our_channels = channel_manager.list_usable_channels(); + 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, + }; + println!("VMW: adding routehop, info.fee base: {}", forwarding_info.fee_base_msat); + 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, + }]); + } + + // 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()), + ( + Some(PaymentPreimage(preimage)), + HTLCDirection::Inbound, + HTLCStatus::Pending, + SatoshiAmount(Some(amt_sat)), + ), + ); } fn close_channel(channel_id: [u8; 32], channel_manager: Arc) { - match channel_manager.close_channel(&channel_id) { - Ok(()) => println!("EVENT: initiating channel close"), - Err(e) => println!("ERROR: failed to close channel: {:?}", e) - } + 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) { - 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) - } + 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 = 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())) +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 = 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())) } diff --git a/src/convert.rs b/src/convert.rs index c92a926..00ff84d 100644 --- a/src/convert.rs +++ b/src/convert.rs @@ -1,86 +1,87 @@ -use bitcoin::BlockHash; use bitcoin::hashes::hex::FromHex; +use bitcoin::BlockHash; use lightning_block_sync::http::JsonResponse; use std::convert::TryInto; pub struct FundedTx { - pub changepos: i64, - pub hex: String, + pub changepos: i64, + pub hex: String, } impl TryInto for JsonResponse { - type Error = std::io::Error; - fn try_into(self) -> std::io::Result { - Ok(FundedTx { - changepos: self.0["changepos"].as_i64().unwrap(), - hex: self.0["hex"].as_str().unwrap().to_string(), - }) - } + type Error = std::io::Error; + fn try_into(self) -> std::io::Result { + Ok(FundedTx { + changepos: self.0["changepos"].as_i64().unwrap(), + hex: self.0["hex"].as_str().unwrap().to_string(), + }) + } } pub struct RawTx(pub String); impl TryInto for JsonResponse { - type Error = std::io::Error; - fn try_into(self) -> std::io::Result { - Ok(RawTx(self.0.as_str().unwrap().to_string())) - } + type Error = std::io::Error; + fn try_into(self) -> std::io::Result { + Ok(RawTx(self.0.as_str().unwrap().to_string())) + } } pub struct SignedTx { - pub complete: bool, - pub hex: String, + pub complete: bool, + pub hex: String, } impl TryInto for JsonResponse { - type Error = std::io::Error; - fn try_into(self) -> std::io::Result { - Ok(SignedTx { - hex: self.0["hex"].as_str().unwrap().to_string(), - complete: self.0["complete"].as_bool().unwrap(), - }) - } + type Error = std::io::Error; + fn try_into(self) -> std::io::Result { + Ok(SignedTx { + hex: self.0["hex"].as_str().unwrap().to_string(), + complete: self.0["complete"].as_bool().unwrap(), + }) + } } pub struct NewAddress(pub String); impl TryInto for JsonResponse { - type Error = std::io::Error; - fn try_into(self) -> std::io::Result { - Ok(NewAddress(self.0.as_str().unwrap().to_string())) - } + type Error = std::io::Error; + fn try_into(self) -> std::io::Result { + Ok(NewAddress(self.0.as_str().unwrap().to_string())) + } } pub struct FeeResponse { - pub feerate: Option, - pub errored: bool, + pub feerate: Option, + pub errored: bool, } impl TryInto for JsonResponse { - type Error = std::io::Error; - fn try_into(self) -> std::io::Result { - let errored = !self.0["errors"].is_null(); - Ok(FeeResponse { - errored, - feerate: match errored { - true => None, - // The feerate from bitcoind is in BTC/kb, and we want satoshis/kb. - false => Some((self.0["feerate"].as_f64().unwrap() * 100_000_000.0).round() as u32) - } - }) - } + type Error = std::io::Error; + fn try_into(self) -> std::io::Result { + let errored = !self.0["errors"].is_null(); + Ok(FeeResponse { + errored, + feerate: match errored { + true => None, + // The feerate from bitcoind is in BTC/kb, and we want satoshis/kb. + false => Some((self.0["feerate"].as_f64().unwrap() * 100_000_000.0).round() as u32), + }, + }) + } } pub struct BlockchainInfo { - pub latest_height: usize, - pub latest_blockhash: BlockHash, + pub latest_height: usize, + pub latest_blockhash: BlockHash, } impl TryInto for JsonResponse { - type Error = std::io::Error; - fn try_into(self) -> std::io::Result { - Ok(BlockchainInfo { - latest_height: self.0["blocks"].as_u64().unwrap() as usize, - latest_blockhash: BlockHash::from_hex(self.0["bestblockhash"].as_str().unwrap()).unwrap(), - }) - } + type Error = std::io::Error; + fn try_into(self) -> std::io::Result { + Ok(BlockchainInfo { + latest_height: self.0["blocks"].as_u64().unwrap() as usize, + latest_blockhash: BlockHash::from_hex(self.0["bestblockhash"].as_str().unwrap()) + .unwrap(), + }) + } } diff --git a/src/disk.rs b/src/disk.rs index cd4ea90..13ac5e7 100644 --- a/src/disk.rs +++ b/src/disk.rs @@ -1,7 +1,7 @@ -use bitcoin::{BlockHash, Txid}; +use crate::cli; use bitcoin::hashes::hex::FromHex; use bitcoin::secp256k1::key::PublicKey; -use crate::cli; +use bitcoin::{BlockHash, Txid}; use lightning::chain::channelmonitor::ChannelMonitor; use lightning::chain::keysinterface::{InMemorySigner, KeysManager}; use lightning::chain::transaction::OutPoint; @@ -17,89 +17,113 @@ use std::path::Path; use std::sync::Arc; use time::OffsetDateTime; -pub(crate) struct FilesystemLogger{ - data_dir: String +pub(crate) struct FilesystemLogger { + data_dir: String, } impl FilesystemLogger { - pub(crate) fn new(data_dir: String) -> Self { - let logs_path = format!("{}/logs", data_dir); - fs::create_dir_all(logs_path.clone()).unwrap(); - Self { - data_dir: logs_path - } - } + pub(crate) fn new(data_dir: String) -> Self { + let logs_path = format!("{}/logs", data_dir); + fs::create_dir_all(logs_path.clone()).unwrap(); + Self { data_dir: logs_path } + } } impl Logger for FilesystemLogger { - fn log(&self, record: &Record) { - let raw_log = record.args.to_string(); - let log = format!("{} {:<5} [{}:{}] {}\n", OffsetDateTime::now_utc().format("%F %T"), - record.level.to_string(), record.module_path, record.line, raw_log); - let logs_file_path = format!("{}/logs.txt", self.data_dir.clone()); - fs::OpenOptions::new().create(true).append(true).open(logs_file_path).unwrap() - .write_all(log.as_bytes()).unwrap(); - } + fn log(&self, record: &Record) { + let raw_log = record.args.to_string(); + let log = format!( + "{} {:<5} [{}:{}] {}\n", + OffsetDateTime::now_utc().format("%F %T"), + record.level.to_string(), + record.module_path, + record.line, + raw_log + ); + let logs_file_path = format!("{}/logs.txt", self.data_dir.clone()); + fs::OpenOptions::new() + .create(true) + .append(true) + .open(logs_file_path) + .unwrap() + .write_all(log.as_bytes()) + .unwrap(); + } } pub(crate) fn persist_channel_peer(path: &Path, peer_info: &str) -> std::io::Result<()> { - let mut file = fs::OpenOptions::new().create(true).append(true).open(path)?; - file.write_all(format!("{}\n", peer_info).as_bytes()) + let mut file = fs::OpenOptions::new().create(true).append(true).open(path)?; + file.write_all(format!("{}\n", peer_info).as_bytes()) } -pub(crate) fn read_channel_peer_data(path: &Path) -> Result, std::io::Error> { - let mut peer_data = HashMap::new(); - if !Path::new(&path).exists() { - return Ok(HashMap::new()) - } - let file = File::open(path)?; - let reader = BufReader::new(file); - for line in reader.lines() { - match cli::parse_peer_info(line.unwrap()) { - Ok((pubkey, socket_addr)) => { - peer_data.insert(pubkey, socket_addr); - }, - Err(e) => return Err(e) - } - } - Ok(peer_data) +pub(crate) fn read_channel_peer_data( + path: &Path, +) -> Result, std::io::Error> { + let mut peer_data = HashMap::new(); + if !Path::new(&path).exists() { + return Ok(HashMap::new()); + } + let file = File::open(path)?; + let reader = BufReader::new(file); + for line in reader.lines() { + match cli::parse_peer_info(line.unwrap()) { + Ok((pubkey, socket_addr)) => { + peer_data.insert(pubkey, socket_addr); + } + Err(e) => return Err(e), + } + } + Ok(peer_data) } +pub(crate) fn read_channelmonitors( + path: String, keys_manager: Arc, +) -> Result)>, std::io::Error> { + if !Path::new(&path).exists() { + return Ok(HashMap::new()); + } + let mut outpoint_to_channelmonitor = HashMap::new(); + for file_option in fs::read_dir(path).unwrap() { + let file = file_option.unwrap(); + let owned_file_name = file.file_name(); + let filename = owned_file_name.to_str(); + if !filename.is_some() || !filename.unwrap().is_ascii() || filename.unwrap().len() < 65 { + return Err(std::io::Error::new( + std::io::ErrorKind::Other, + "Invalid ChannelMonitor file name", + )); + } -pub(crate) fn read_channelmonitors(path: String, keys_manager: Arc) -> - Result)>, std::io::Error> -{ - if !Path::new(&path).exists() { - return Ok(HashMap::new()) - } - let mut outpoint_to_channelmonitor = HashMap::new(); - for file_option in fs::read_dir(path).unwrap() { - let file = file_option.unwrap(); - let owned_file_name = file.file_name(); - let filename = owned_file_name.to_str(); - if !filename.is_some() || !filename.unwrap().is_ascii() || filename.unwrap().len() < 65 { - return Err(std::io::Error::new(std::io::ErrorKind::Other, "Invalid ChannelMonitor file name")); - } - - let txid = Txid::from_hex(filename.unwrap().split_at(64).0); - if txid.is_err() { - return Err(std::io::Error::new(std::io::ErrorKind::Other, "Invalid tx ID in filename")); - } + let txid = Txid::from_hex(filename.unwrap().split_at(64).0); + if txid.is_err() { + return Err(std::io::Error::new( + std::io::ErrorKind::Other, + "Invalid tx ID in filename", + )); + } - let index = filename.unwrap().split_at(65).1.split('.').next().unwrap().parse(); - if index.is_err() { - return Err(std::io::Error::new(std::io::ErrorKind::Other, "Invalid tx index in filename")); - } + let index = filename.unwrap().split_at(65).1.split('.').next().unwrap().parse(); + if index.is_err() { + return Err(std::io::Error::new( + std::io::ErrorKind::Other, + "Invalid tx index in filename", + )); + } - let contents = fs::read(&file.path())?; + let contents = fs::read(&file.path())?; - if let Ok((blockhash, channel_monitor)) = - <(BlockHash, ChannelMonitor)>::read(&mut Cursor::new(&contents), - &*keys_manager) - { - outpoint_to_channelmonitor.insert(OutPoint { txid: txid.unwrap(), index: index.unwrap() }, - (blockhash, channel_monitor)); - } else { - return Err(std::io::Error::new(std::io::ErrorKind::Other, - "Failed to deserialize ChannelMonitor")); - } - } - Ok(outpoint_to_channelmonitor) + if let Ok((blockhash, channel_monitor)) = + <(BlockHash, ChannelMonitor)>::read( + &mut Cursor::new(&contents), + &*keys_manager, + ) { + outpoint_to_channelmonitor.insert( + OutPoint { txid: txid.unwrap(), index: index.unwrap() }, + (blockhash, channel_monitor), + ); + } else { + return Err(std::io::Error::new( + std::io::ErrorKind::Other, + "Failed to deserialize ChannelMonitor", + )); + } + } + Ok(outpoint_to_channelmonitor) } diff --git a/src/hex_utils.rs b/src/hex_utils.rs index c9c55b9..70fe28b 100644 --- a/src/hex_utils.rs +++ b/src/hex_utils.rs @@ -1,42 +1,42 @@ use bitcoin::secp256k1::key::PublicKey; pub fn to_vec(hex: &str) -> Option> { - let mut out = Vec::with_capacity(hex.len() / 2); + let mut out = Vec::with_capacity(hex.len() / 2); - let mut b = 0; - for (idx, c) in hex.as_bytes().iter().enumerate() { - b <<= 4; - match *c { - b'A'..=b'F' => b |= c - b'A' + 10, - b'a'..=b'f' => b |= c - b'a' + 10, - b'0'..=b'9' => b |= c - b'0', - _ => return None, - } - if (idx & 1) == 1 { - out.push(b); - b = 0; - } - } + let mut b = 0; + for (idx, c) in hex.as_bytes().iter().enumerate() { + b <<= 4; + match *c { + b'A'..=b'F' => b |= c - b'A' + 10, + b'a'..=b'f' => b |= c - b'a' + 10, + b'0'..=b'9' => b |= c - b'0', + _ => return None, + } + if (idx & 1) == 1 { + out.push(b); + b = 0; + } + } - Some(out) + Some(out) } #[inline] pub fn hex_str(value: &[u8]) -> String { - let mut res = String::with_capacity(64); - for v in value { - res += &format!("{:02x}", v); - } - res + let mut res = String::with_capacity(64); + for v in value { + res += &format!("{:02x}", v); + } + res } pub fn to_compressed_pubkey(hex: &str) -> Option { - let data = match to_vec(&hex[0..33*2]) { - Some(bytes) => bytes, - None => return None - }; - match PublicKey::from_slice(&data) { - Ok(pk) => Some(pk), - Err(_) => None, - } + let data = match to_vec(&hex[0..33 * 2]) { + Some(bytes) => bytes, + None => return None, + }; + match PublicKey::from_slice(&data) { + Ok(pk) => Some(pk), + Err(_) => None, + } } diff --git a/src/main.rs b/src/main.rs index 37d464a..0b45f0e 100644 --- a/src/main.rs +++ b/src/main.rs @@ -4,46 +4,47 @@ mod convert; mod disk; mod hex_utils; -use lightning_background_processor::BackgroundProcessor; -use bitcoin::BlockHash; +use crate::bitcoind_client::BitcoindClient; +use crate::disk::FilesystemLogger; use bitcoin::blockdata::constants::genesis_block; use bitcoin::blockdata::transaction::Transaction; use bitcoin::consensus::encode; -use bitcoin::hashes::Hash; use bitcoin::hashes::sha256::Hash as Sha256; +use bitcoin::hashes::Hash; use bitcoin::network::constants::Network; use bitcoin::secp256k1::Secp256k1; +use bitcoin::BlockHash; use bitcoin_bech32::WitnessProgram; -use crate::bitcoind_client::BitcoindClient; -use crate::disk::FilesystemLogger; use lightning::chain; use lightning::chain::chaininterface::{BroadcasterInterface, ConfirmationTarget, FeeEstimator}; use lightning::chain::chainmonitor::ChainMonitor; -use lightning::chain::Filter; use lightning::chain::keysinterface::{InMemorySigner, KeysInterface, KeysManager}; use lightning::chain::transaction::OutPoint; +use lightning::chain::Filter; use lightning::chain::Watch; use lightning::ln::channelmanager; -use lightning::ln::channelmanager::{ChainParameters, ChannelManagerReadArgs, PaymentHash, PaymentPreimage, - SimpleArcChannelManager}; +use lightning::ln::channelmanager::{ + ChainParameters, ChannelManagerReadArgs, PaymentHash, PaymentPreimage, SimpleArcChannelManager, +}; use lightning::ln::peer_handler::{MessageHandler, SimpleArcPeerManager}; +use lightning::routing::network_graph::NetGraphMsgHandler; use lightning::util::config::UserConfig; use lightning::util::events::{Event, EventsProvider}; use lightning::util::ser::ReadableArgs; -use lightning_block_sync::UnboundedCache; -use lightning_block_sync::SpvClient; +use lightning_background_processor::BackgroundProcessor; use lightning_block_sync::init; use lightning_block_sync::poll; +use lightning_block_sync::SpvClient; +use lightning_block_sync::UnboundedCache; use lightning_net_tokio::SocketDescriptor; use lightning_persister::FilesystemPersister; use rand::{thread_rng, Rng}; -use lightning::routing::network_graph::NetGraphMsgHandler; use std::collections::HashMap; use std::fmt; use std::fs; use std::fs::File; use std::io; -use std::io:: Write; +use std::io::Write; use std::path::Path; use std::sync::{Arc, Mutex}; use std::thread; @@ -53,402 +54,509 @@ use tokio::sync::mpsc; #[derive(PartialEq)] pub(crate) enum HTLCDirection { - Inbound, - Outbound + Inbound, + Outbound, } pub(crate) enum HTLCStatus { - Pending, - Succeeded, - Failed, + Pending, + Succeeded, + Failed, } pub(crate) struct SatoshiAmount(Option); impl fmt::Display for SatoshiAmount { - fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { - match self.0 { - Some(amt) => write!(f, "{}", amt), - None => write!(f, "unknown") - - } - } + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match self.0 { + Some(amt) => write!(f, "{}", amt), + None => write!(f, "unknown"), + } + } } -pub(crate) type PaymentInfoStorage = Arc, - HTLCDirection, HTLCStatus, - SatoshiAmount)>>>; - -type ArcChainMonitor = ChainMonitor, Arc, -Arc, Arc, Arc>; - -pub(crate) type PeerManager = SimpleArcPeerManager; - -pub(crate) type ChannelManager = SimpleArcChannelManager; - -fn handle_ldk_events(peer_manager: Arc, channel_manager: Arc, - chain_monitor: Arc, bitcoind_client: Arc, - keys_manager: Arc, payment_storage: PaymentInfoStorage, - network: Network) -{ - let mut pending_txs: HashMap = HashMap::new(); - loop { - peer_manager.process_events(); - let loop_channel_manager = channel_manager.clone(); - let mut events = channel_manager.get_and_clear_pending_events(); - events.append(&mut chain_monitor.get_and_clear_pending_events()); - for event in events { - match event { - Event::FundingGenerationReady { temporary_channel_id, channel_value_satoshis, - output_script, .. } => { - // Construct the raw transaction with one output, that is paid the amount of the - // channel. - let addr = WitnessProgram::from_scriptpubkey(&output_script[..], match network { - Network::Bitcoin => bitcoin_bech32::constants::Network::Bitcoin, - Network::Testnet => bitcoin_bech32::constants::Network::Testnet, - Network::Regtest => bitcoin_bech32::constants::Network::Regtest, - Network::Signet => panic!("Signet unsupported"), - } - ).expect("Lightning funding tx should always be to a SegWit output").to_address(); - let mut outputs = vec![HashMap::with_capacity(1)]; - outputs[0].insert(addr, channel_value_satoshis as f64 / 100_000_000.0); - let raw_tx = bitcoind_client.create_raw_transaction(outputs); - - // Have your wallet put the inputs into the transaction such that the output is - // satisfied. - let funded_tx = bitcoind_client.fund_raw_transaction(raw_tx); - let change_output_position = funded_tx.changepos; - assert!(change_output_position == 0 || change_output_position == 1); - - // Sign the final funding transaction and broadcast it. - let signed_tx = bitcoind_client.sign_raw_transaction_with_wallet(funded_tx.hex); - assert_eq!(signed_tx.complete, true); - let final_tx: Transaction = encode::deserialize(&hex_utils::to_vec(&signed_tx.hex).unwrap()).unwrap(); - let outpoint = OutPoint { - txid: final_tx.txid(), - index: if change_output_position == 0 { 1 } else { 0 } - }; - // Give the funding transaction back to LDK for opening the channel. - loop_channel_manager.funding_transaction_generated(&temporary_channel_id, - outpoint); - pending_txs.insert(outpoint, final_tx); - }, - Event::FundingBroadcastSafe { funding_txo, .. } => { - let funding_tx = pending_txs.remove(&funding_txo).unwrap(); - bitcoind_client.broadcast_transaction(&funding_tx); - println!("\nEVENT: broadcasted funding transaction"); - print!("> "); io::stdout().flush().unwrap(); - }, - Event::PaymentReceived { payment_hash, payment_secret, amt: amt_msat } => { - let mut payments = payment_storage.lock().unwrap(); - if let Some((Some(preimage), _, _, _)) = payments.get(&payment_hash) { - assert!(loop_channel_manager.claim_funds(preimage.clone(), &payment_secret, - amt_msat)); - println!("\nEVENT: received payment from payment_hash {} of {} satoshis", - hex_utils::hex_str(&payment_hash.0), amt_msat / 1000); - print!("> "); io::stdout().flush().unwrap(); - let (_, _, ref mut status, _) = payments.get_mut(&payment_hash).unwrap(); - *status = HTLCStatus::Succeeded; - } else { - println!("\nERROR: we received a payment but didn't know the preimage"); - print!("> "); io::stdout().flush().unwrap(); - loop_channel_manager.fail_htlc_backwards(&payment_hash, &payment_secret); - payments.insert(payment_hash, (None, HTLCDirection::Inbound, - HTLCStatus::Failed, SatoshiAmount(None))); - } - }, - Event::PaymentSent { payment_preimage } => { - let hashed = PaymentHash(Sha256::hash(&payment_preimage.0).into_inner()); - let mut payments = payment_storage.lock().unwrap(); - for (payment_hash, (preimage_option, _, status, amt_sat)) in payments.iter_mut() { - if *payment_hash == hashed { - *preimage_option = Some(payment_preimage); - *status = HTLCStatus::Succeeded; - println!("\nNEW EVENT: successfully sent payment of {} satoshis from \ - payment hash {:?} with preimage {:?}", amt_sat, - hex_utils::hex_str(&payment_hash.0), - hex_utils::hex_str(&payment_preimage.0)); - print!("> "); io::stdout().flush().unwrap(); - } - } - }, - Event::PaymentFailed { payment_hash, rejected_by_dest } => { - print!("\nNEW EVENT: Failed to send payment to payment hash {:?}: ", - hex_utils::hex_str(&payment_hash.0)); - if rejected_by_dest { - println!("rejected by destination node"); - } else { - println!("route failed"); - } - print!("> "); io::stdout().flush().unwrap(); - - let mut payments = payment_storage.lock().unwrap(); - if payments.contains_key(&payment_hash) { - let (_, _, ref mut status, _) = payments.get_mut(&payment_hash).unwrap(); - *status = HTLCStatus::Failed; - } - }, - Event::PendingHTLCsForwardable { time_forwardable } => { - let forwarding_channel_manager = loop_channel_manager.clone(); - thread::spawn(move || { - let min = time_forwardable.as_secs(); - let seconds_to_sleep = thread_rng().gen_range(min, min * 5); - thread::sleep(Duration::new(seconds_to_sleep, 0)); - forwarding_channel_manager.process_pending_htlc_forwards(); - }); - }, - Event::SpendableOutputs { outputs } => { - let destination_address = bitcoind_client.get_new_address(); - let output_descriptors = &outputs.iter().map(|a| a).collect::>(); - let tx_feerate = bitcoind_client.get_est_sat_per_1000_weight(ConfirmationTarget::Normal); - let spending_tx = keys_manager.spend_spendable_outputs(output_descriptors, - Vec::new(), - destination_address.script_pubkey(), - tx_feerate, &Secp256k1::new()).unwrap(); - bitcoind_client.broadcast_transaction(&spending_tx); - // XXX maybe need to rescan and blah? - } - } - } - thread::sleep(Duration::new(1, 0)); - } +pub(crate) type PaymentInfoStorage = Arc< + Mutex< + HashMap, HTLCDirection, HTLCStatus, SatoshiAmount)>, + >, +>; + +type ArcChainMonitor = ChainMonitor< + InMemorySigner, + Arc, + Arc, + Arc, + Arc, + Arc, +>; + +pub(crate) type PeerManager = SimpleArcPeerManager< + SocketDescriptor, + ArcChainMonitor, + BitcoindClient, + BitcoindClient, + dyn chain::Access, + FilesystemLogger, +>; + +pub(crate) type ChannelManager = + SimpleArcChannelManager; + +fn handle_ldk_events( + peer_manager: Arc, channel_manager: Arc, + chain_monitor: Arc, bitcoind_client: Arc, + keys_manager: Arc, payment_storage: PaymentInfoStorage, network: Network, +) { + let mut pending_txs: HashMap = HashMap::new(); + loop { + peer_manager.process_events(); + let loop_channel_manager = channel_manager.clone(); + let mut events = channel_manager.get_and_clear_pending_events(); + events.append(&mut chain_monitor.get_and_clear_pending_events()); + for event in events { + match event { + Event::FundingGenerationReady { + temporary_channel_id, + channel_value_satoshis, + output_script, + .. + } => { + // Construct the raw transaction with one output, that is paid the amount of the + // channel. + let addr = WitnessProgram::from_scriptpubkey( + &output_script[..], + match network { + Network::Bitcoin => bitcoin_bech32::constants::Network::Bitcoin, + Network::Testnet => bitcoin_bech32::constants::Network::Testnet, + Network::Regtest => bitcoin_bech32::constants::Network::Regtest, + Network::Signet => panic!("Signet unsupported"), + }, + ) + .expect("Lightning funding tx should always be to a SegWit output") + .to_address(); + let mut outputs = vec![HashMap::with_capacity(1)]; + outputs[0].insert(addr, channel_value_satoshis as f64 / 100_000_000.0); + let raw_tx = bitcoind_client.create_raw_transaction(outputs); + + // Have your wallet put the inputs into the transaction such that the output is + // satisfied. + let funded_tx = bitcoind_client.fund_raw_transaction(raw_tx); + let change_output_position = funded_tx.changepos; + assert!(change_output_position == 0 || change_output_position == 1); + + // Sign the final funding transaction and broadcast it. + let signed_tx = bitcoind_client.sign_raw_transaction_with_wallet(funded_tx.hex); + assert_eq!(signed_tx.complete, true); + let final_tx: Transaction = + encode::deserialize(&hex_utils::to_vec(&signed_tx.hex).unwrap()).unwrap(); + let outpoint = OutPoint { + txid: final_tx.txid(), + index: if change_output_position == 0 { 1 } else { 0 }, + }; + // Give the funding transaction back to LDK for opening the channel. + loop_channel_manager + .funding_transaction_generated(&temporary_channel_id, outpoint); + pending_txs.insert(outpoint, final_tx); + } + Event::FundingBroadcastSafe { funding_txo, .. } => { + let funding_tx = pending_txs.remove(&funding_txo).unwrap(); + bitcoind_client.broadcast_transaction(&funding_tx); + println!("\nEVENT: broadcasted funding transaction"); + print!("> "); + io::stdout().flush().unwrap(); + } + Event::PaymentReceived { payment_hash, payment_secret, amt: amt_msat } => { + let mut payments = payment_storage.lock().unwrap(); + if let Some((Some(preimage), _, _, _)) = payments.get(&payment_hash) { + assert!(loop_channel_manager.claim_funds( + preimage.clone(), + &payment_secret, + amt_msat + )); + println!( + "\nEVENT: received payment from payment_hash {} of {} satoshis", + hex_utils::hex_str(&payment_hash.0), + amt_msat / 1000 + ); + print!("> "); + io::stdout().flush().unwrap(); + let (_, _, ref mut status, _) = payments.get_mut(&payment_hash).unwrap(); + *status = HTLCStatus::Succeeded; + } else { + println!("\nERROR: we received a payment but didn't know the preimage"); + print!("> "); + io::stdout().flush().unwrap(); + loop_channel_manager.fail_htlc_backwards(&payment_hash, &payment_secret); + payments.insert( + payment_hash, + (None, HTLCDirection::Inbound, HTLCStatus::Failed, SatoshiAmount(None)), + ); + } + } + Event::PaymentSent { payment_preimage } => { + let hashed = PaymentHash(Sha256::hash(&payment_preimage.0).into_inner()); + let mut payments = payment_storage.lock().unwrap(); + for (payment_hash, (preimage_option, _, status, amt_sat)) in payments.iter_mut() + { + if *payment_hash == hashed { + *preimage_option = Some(payment_preimage); + *status = HTLCStatus::Succeeded; + println!( + "\nEVENT: successfully sent payment of {} satoshis from \ + payment hash {:?} with preimage {:?}", + amt_sat, + hex_utils::hex_str(&payment_hash.0), + hex_utils::hex_str(&payment_preimage.0) + ); + print!("> "); + io::stdout().flush().unwrap(); + } + } + } + Event::PaymentFailed { payment_hash, rejected_by_dest } => { + print!( + "\nEVENT: Failed to send payment to payment hash {:?}: ", + hex_utils::hex_str(&payment_hash.0) + ); + if rejected_by_dest { + println!("rejected by destination node"); + } else { + println!("route failed"); + } + print!("> "); + io::stdout().flush().unwrap(); + + let mut payments = payment_storage.lock().unwrap(); + if payments.contains_key(&payment_hash) { + let (_, _, ref mut status, _) = payments.get_mut(&payment_hash).unwrap(); + *status = HTLCStatus::Failed; + } + } + Event::PendingHTLCsForwardable { time_forwardable } => { + let forwarding_channel_manager = loop_channel_manager.clone(); + thread::spawn(move || { + let min = time_forwardable.as_secs(); + let seconds_to_sleep = thread_rng().gen_range(min, min * 5); + thread::sleep(Duration::new(seconds_to_sleep, 0)); + forwarding_channel_manager.process_pending_htlc_forwards(); + }); + } + Event::SpendableOutputs { outputs } => { + let destination_address = bitcoind_client.get_new_address(); + let output_descriptors = &outputs.iter().map(|a| a).collect::>(); + let tx_feerate = + bitcoind_client.get_est_sat_per_1000_weight(ConfirmationTarget::Normal); + let spending_tx = keys_manager + .spend_spendable_outputs( + output_descriptors, + Vec::new(), + destination_address.script_pubkey(), + tx_feerate, + &Secp256k1::new(), + ) + .unwrap(); + bitcoind_client.broadcast_transaction(&spending_tx); + // XXX maybe need to rescan and blah? + } + } + } + thread::sleep(Duration::new(1, 0)); + } } fn main() { - let args = match cli::parse_startup_args() { - Ok(user_args) => user_args, - Err(()) => return - }; - - // Initialize the LDK data directory if necessary. - let ldk_data_dir = format!("{}/.ldk", args.ldk_storage_dir_path); - fs::create_dir_all(ldk_data_dir.clone()).unwrap(); - - // Initialize our bitcoind client. - let bitcoind_client = match BitcoindClient::new(args.bitcoind_rpc_host.clone(), - args.bitcoind_rpc_port, args.bitcoind_rpc_username.clone(), - args.bitcoind_rpc_password.clone()) { - Ok(client) => Arc::new(client), - Err(e) => { - println!("Failed to connect to bitcoind client: {}", e); - return - } - }; - let mut bitcoind_rpc_client = bitcoind_client.get_new_rpc_client().unwrap(); - - // ## Setup - // Step 1: Initialize the FeeEstimator - - // BitcoindClient implements the FeeEstimator trait, so it'll act as our fee estimator. - let fee_estimator = bitcoind_client.clone(); - - // Step 2: Initialize the Logger - let logger = Arc::new(FilesystemLogger::new(ldk_data_dir.clone())); - - // Step 3: Initialize the BroadcasterInterface - - // BitcoindClient implements the BroadcasterInterface trait, so it'll act as our transaction - // broadcaster. - let broadcaster = bitcoind_client.clone(); - - // Step 4: Initialize Persist - let persister = Arc::new(FilesystemPersister::new(ldk_data_dir.clone())); - - // Step 5: Initialize the ChainMonitor - let chain_monitor: Arc = Arc::new(ChainMonitor::new(None, broadcaster.clone(), - logger.clone(), fee_estimator.clone(), - persister.clone())); - - // Step 6: Initialize the KeysManager - - // The key seed that we use to derive the node privkey (that corresponds to the node pubkey) and - // other secret key material. - let keys_seed_path = format!("{}/keys_seed", ldk_data_dir.clone()); - let keys_seed = if let Ok(seed) = fs::read(keys_seed_path.clone()) { - assert_eq!(seed.len(), 32); - let mut key = [0; 32]; - key.copy_from_slice(&seed); - key - } else { - let mut key = [0; 32]; - thread_rng().fill_bytes(&mut key); - let mut f = File::create(keys_seed_path).unwrap(); - f.write_all(&key).expect("Failed to write node keys seed to disk"); - f.sync_all().expect("Failed to sync node keys seed to disk"); - key - }; - let cur = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap(); - let keys_manager = Arc::new(KeysManager::new(&keys_seed, cur.as_secs(), cur.subsec_nanos())); - - // Step 7: Read ChannelMonitor state from disk - let monitors_path = format!("{}/monitors", ldk_data_dir.clone()); - let mut outpoint_to_channelmonitor = disk::read_channelmonitors(monitors_path.to_string(), - keys_manager.clone()).unwrap(); - - // Step 9: Initialize the ChannelManager - let user_config = UserConfig::default(); - let runtime = Runtime::new().unwrap(); - let mut restarting_node = true; - let (channel_manager_blockhash, mut channel_manager) = { - if let Ok(mut f) = fs::File::open(format!("{}/manager", ldk_data_dir.clone())) { - let mut channel_monitor_mut_references = Vec::new(); - for (_, channel_monitor) in outpoint_to_channelmonitor.iter_mut() { - channel_monitor_mut_references.push(&mut channel_monitor.1); - } - let read_args = ChannelManagerReadArgs::new(keys_manager.clone(), fee_estimator.clone(), - chain_monitor.clone(), broadcaster.clone(), - logger.clone(), user_config, - channel_monitor_mut_references); - <(BlockHash, ChannelManager)>::read(&mut f, read_args).unwrap() - } else { // We're starting a fresh node. - restarting_node = false; - let getinfo_resp = bitcoind_client.get_blockchain_info(); - let chain_params = ChainParameters { - network: args.network, - latest_hash: getinfo_resp.latest_blockhash, - latest_height: getinfo_resp.latest_height, - }; - let fresh_channel_manager = channelmanager::ChannelManager::new(fee_estimator.clone(), - chain_monitor.clone(), - broadcaster.clone(), - logger.clone(), - keys_manager.clone(), - user_config, chain_params); - (getinfo_resp.latest_blockhash, fresh_channel_manager) - } - }; - - // Step 10: Sync ChannelMonitors and ChannelManager to chain tip - let mut chain_listener_channel_monitors = Vec::new(); - let mut cache = UnboundedCache::new(); - let mut chain_tip: Option = None; - if restarting_node { - let mut chain_listeners = vec![ - (channel_manager_blockhash, &mut channel_manager as &mut dyn chain::Listen)]; - - for (outpoint, blockhash_and_monitor) in outpoint_to_channelmonitor.drain() { - let blockhash = blockhash_and_monitor.0; - let channel_monitor = blockhash_and_monitor.1; - chain_listener_channel_monitors.push((blockhash, (channel_monitor, - broadcaster.clone(), fee_estimator.clone(), - logger.clone()), outpoint)); - } - - for monitor_listener_info in chain_listener_channel_monitors.iter_mut() { - chain_listeners.push((monitor_listener_info.0, - &mut monitor_listener_info.1 as &mut dyn chain::Listen)); - } - chain_tip = Some(runtime.block_on(init::synchronize_listeners(&mut bitcoind_rpc_client, args.network, - &mut cache, chain_listeners)).unwrap()); - } - - // Step 11: Give ChannelMonitors to ChainMonitor - for item in chain_listener_channel_monitors.drain(..) { - let channel_monitor = item.1.0; - let funding_outpoint = item.2; - chain_monitor.watch_channel(funding_outpoint, channel_monitor).unwrap(); - } - - // Step 13: Optional: Initialize the NetGraphMsgHandler - // XXX persist routing data - let genesis = genesis_block(args.network).header.block_hash(); - let router = Arc::new(NetGraphMsgHandler::new(genesis, None::>, logger.clone())); - - // Step 14: Initialize the PeerManager - let channel_manager: Arc = Arc::new(channel_manager); - let mut ephemeral_bytes = [0; 32]; - rand::thread_rng().fill_bytes(&mut ephemeral_bytes); - let lightning_msg_handler = MessageHandler { chan_handler: channel_manager.clone(), - route_handler: router.clone() }; - let peer_manager: Arc = Arc::new(PeerManager::new(lightning_msg_handler, - keys_manager.get_node_secret(), - &ephemeral_bytes, logger.clone())); - - // ## Running LDK - // Step 16: Initialize Peer Connection Handling - - // We poll for events in handle_ldk_events(..) rather than waiting for them over the - // mpsc::channel, so we can leave the event receiver as unused. - let (event_ntfn_sender, mut _event_ntfn_receiver) = mpsc::channel(2); - let peer_manager_connection_handler = peer_manager.clone(); - let event_notifier = event_ntfn_sender.clone(); - let listening_port = args.ldk_peer_listening_port; - runtime.spawn(async move { - let listener = std::net::TcpListener::bind(format!("0.0.0.0:{}", listening_port)).unwrap(); - loop { - let tcp_stream = listener.accept().unwrap().0; - lightning_net_tokio::setup_inbound(peer_manager_connection_handler.clone(), - event_notifier.clone(), tcp_stream).await; - } - }); - - // Step 17: Connect and Disconnect Blocks - if chain_tip.is_none() { - chain_tip = Some(runtime.block_on(init::validate_best_block_header(&mut bitcoind_rpc_client)).unwrap()); - } - let channel_manager_listener = channel_manager.clone(); - let chain_monitor_listener = chain_monitor.clone(); - let network = args.network; - runtime.spawn(async move { - let chain_poller = poll::ChainPoller::new(&mut bitcoind_rpc_client, network); - let chain_listener = (chain_monitor_listener, channel_manager_listener); - let mut spv_client = SpvClient::new(chain_tip.unwrap(), chain_poller, &mut cache, - &chain_listener); - loop { - spv_client.poll_best_tip().await.unwrap(); - thread::sleep(Duration::new(1, 0)); - } - }); - - // Step 17 & 18: Initialize ChannelManager persistence & Once Per Minute: ChannelManager's - // timer_chan_freshness_every_min() and PeerManager's timer_tick_occurred - let runtime_handle = runtime.handle(); - let data_dir = ldk_data_dir.clone(); - let persist_channel_manager_callback = move |node: &ChannelManager| { - FilesystemPersister::persist_manager(data_dir.clone(), &*node) - }; - BackgroundProcessor::start(persist_channel_manager_callback, channel_manager.clone(), - logger.clone()); - - let peer_manager_processor = peer_manager.clone(); - runtime_handle.spawn(async move { - loop { - peer_manager_processor.timer_tick_occurred(); - thread::sleep(Duration::new(60, 0)); - } - }); - - // Step 15: Initialize LDK Event Handling - let peer_manager_event_listener = peer_manager.clone(); - let channel_manager_event_listener = channel_manager.clone(); - let chain_monitor_event_listener = chain_monitor.clone(); - let keys_manager_listener = keys_manager.clone(); - let payment_info: PaymentInfoStorage = Arc::new(Mutex::new(HashMap::new())); - let payment_info_for_events = payment_info.clone(); - let handle = runtime_handle.clone(); - let network = args.network; - thread::spawn(move || { - handle_ldk_events(peer_manager_event_listener, channel_manager_event_listener, - chain_monitor_event_listener, bitcoind_client.clone(), - keys_manager_listener, payment_info_for_events, network); - }); - - // Reconnect to channel peers if possible. - let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone()); - match disk::read_channel_peer_data(Path::new(&peer_data_path)) { - Ok(mut info) => { - for (pubkey, peer_addr) in info.drain() { - let _ = cli::connect_peer_if_necessary(pubkey, peer_addr, peer_manager.clone(), - event_ntfn_sender.clone(), handle.clone()); - } - }, - Err(e) => println!("ERROR: errored reading channel peer info from disk: {:?}", e), - } - - // Start the CLI. - cli::poll_for_user_input(peer_manager.clone(), channel_manager.clone(), router.clone(), - payment_info, keys_manager.get_node_secret(), event_ntfn_sender, - ldk_data_dir.clone(), logger.clone(), handle, args.network); + let args = match cli::parse_startup_args() { + Ok(user_args) => user_args, + Err(()) => return, + }; + + // Initialize the LDK data directory if necessary. + let ldk_data_dir = format!("{}/.ldk", args.ldk_storage_dir_path); + fs::create_dir_all(ldk_data_dir.clone()).unwrap(); + + // Initialize our bitcoind client. + let bitcoind_client = match BitcoindClient::new( + args.bitcoind_rpc_host.clone(), + args.bitcoind_rpc_port, + args.bitcoind_rpc_username.clone(), + args.bitcoind_rpc_password.clone(), + ) { + Ok(client) => Arc::new(client), + Err(e) => { + println!("Failed to connect to bitcoind client: {}", e); + return; + } + }; + let mut bitcoind_rpc_client = bitcoind_client.get_new_rpc_client().unwrap(); + + // ## Setup + // Step 1: Initialize the FeeEstimator + + // BitcoindClient implements the FeeEstimator trait, so it'll act as our fee estimator. + let fee_estimator = bitcoind_client.clone(); + + // Step 2: Initialize the Logger + let logger = Arc::new(FilesystemLogger::new(ldk_data_dir.clone())); + + // Step 3: Initialize the BroadcasterInterface + + // BitcoindClient implements the BroadcasterInterface trait, so it'll act as our transaction + // broadcaster. + let broadcaster = bitcoind_client.clone(); + + // Step 4: Initialize Persist + let persister = Arc::new(FilesystemPersister::new(ldk_data_dir.clone())); + + // Step 5: Initialize the ChainMonitor + let chain_monitor: Arc = Arc::new(ChainMonitor::new( + None, + broadcaster.clone(), + logger.clone(), + fee_estimator.clone(), + persister.clone(), + )); + + // Step 6: Initialize the KeysManager + + // The key seed that we use to derive the node privkey (that corresponds to the node pubkey) and + // other secret key material. + let keys_seed_path = format!("{}/keys_seed", ldk_data_dir.clone()); + let keys_seed = if let Ok(seed) = fs::read(keys_seed_path.clone()) { + assert_eq!(seed.len(), 32); + let mut key = [0; 32]; + key.copy_from_slice(&seed); + key + } else { + let mut key = [0; 32]; + thread_rng().fill_bytes(&mut key); + let mut f = File::create(keys_seed_path).unwrap(); + f.write_all(&key).expect("Failed to write node keys seed to disk"); + f.sync_all().expect("Failed to sync node keys seed to disk"); + key + }; + let cur = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap(); + let keys_manager = Arc::new(KeysManager::new(&keys_seed, cur.as_secs(), cur.subsec_nanos())); + + // Step 7: Read ChannelMonitor state from disk + let monitors_path = format!("{}/monitors", ldk_data_dir.clone()); + let mut outpoint_to_channelmonitor = + disk::read_channelmonitors(monitors_path.to_string(), keys_manager.clone()).unwrap(); + + // Step 9: Initialize the ChannelManager + let user_config = UserConfig::default(); + let runtime = Runtime::new().unwrap(); + let mut restarting_node = true; + let (channel_manager_blockhash, mut channel_manager) = { + if let Ok(mut f) = fs::File::open(format!("{}/manager", ldk_data_dir.clone())) { + let mut channel_monitor_mut_references = Vec::new(); + for (_, channel_monitor) in outpoint_to_channelmonitor.iter_mut() { + channel_monitor_mut_references.push(&mut channel_monitor.1); + } + let read_args = ChannelManagerReadArgs::new( + keys_manager.clone(), + fee_estimator.clone(), + chain_monitor.clone(), + broadcaster.clone(), + logger.clone(), + user_config, + channel_monitor_mut_references, + ); + <(BlockHash, ChannelManager)>::read(&mut f, read_args).unwrap() + } else { + // We're starting a fresh node. + restarting_node = false; + let getinfo_resp = bitcoind_client.get_blockchain_info(); + let chain_params = ChainParameters { + network: args.network, + latest_hash: getinfo_resp.latest_blockhash, + latest_height: getinfo_resp.latest_height, + }; + let fresh_channel_manager = channelmanager::ChannelManager::new( + fee_estimator.clone(), + chain_monitor.clone(), + broadcaster.clone(), + logger.clone(), + keys_manager.clone(), + user_config, + chain_params, + ); + (getinfo_resp.latest_blockhash, fresh_channel_manager) + } + }; + + // Step 10: Sync ChannelMonitors and ChannelManager to chain tip + let mut chain_listener_channel_monitors = Vec::new(); + let mut cache = UnboundedCache::new(); + let mut chain_tip: Option = None; + if restarting_node { + let mut chain_listeners = + vec![(channel_manager_blockhash, &mut channel_manager as &mut dyn chain::Listen)]; + + for (outpoint, blockhash_and_monitor) in outpoint_to_channelmonitor.drain() { + let blockhash = blockhash_and_monitor.0; + let channel_monitor = blockhash_and_monitor.1; + chain_listener_channel_monitors.push(( + blockhash, + (channel_monitor, broadcaster.clone(), fee_estimator.clone(), logger.clone()), + outpoint, + )); + } + + for monitor_listener_info in chain_listener_channel_monitors.iter_mut() { + chain_listeners.push(( + monitor_listener_info.0, + &mut monitor_listener_info.1 as &mut dyn chain::Listen, + )); + } + chain_tip = Some( + runtime + .block_on(init::synchronize_listeners( + &mut bitcoind_rpc_client, + args.network, + &mut cache, + chain_listeners, + )) + .unwrap(), + ); + } + + // Step 11: Give ChannelMonitors to ChainMonitor + for item in chain_listener_channel_monitors.drain(..) { + let channel_monitor = item.1 .0; + let funding_outpoint = item.2; + chain_monitor.watch_channel(funding_outpoint, channel_monitor).unwrap(); + } + + // Step 13: Optional: Initialize the NetGraphMsgHandler + // XXX persist routing data + let genesis = genesis_block(args.network).header.block_hash(); + let router = + Arc::new(NetGraphMsgHandler::new(genesis, None::>, logger.clone())); + + // Step 14: Initialize the PeerManager + let channel_manager: Arc = Arc::new(channel_manager); + let mut ephemeral_bytes = [0; 32]; + rand::thread_rng().fill_bytes(&mut ephemeral_bytes); + let lightning_msg_handler = + MessageHandler { chan_handler: channel_manager.clone(), route_handler: router.clone() }; + let peer_manager: Arc = Arc::new(PeerManager::new( + lightning_msg_handler, + keys_manager.get_node_secret(), + &ephemeral_bytes, + logger.clone(), + )); + + // ## Running LDK + // Step 16: Initialize Peer Connection Handling + + // We poll for events in handle_ldk_events(..) rather than waiting for them over the + // mpsc::channel, so we can leave the event receiver as unused. + let (event_ntfn_sender, mut _event_ntfn_receiver) = mpsc::channel(2); + let peer_manager_connection_handler = peer_manager.clone(); + let event_notifier = event_ntfn_sender.clone(); + let listening_port = args.ldk_peer_listening_port; + runtime.spawn(async move { + let listener = std::net::TcpListener::bind(format!("0.0.0.0:{}", listening_port)).unwrap(); + loop { + let tcp_stream = listener.accept().unwrap().0; + lightning_net_tokio::setup_inbound( + peer_manager_connection_handler.clone(), + event_notifier.clone(), + tcp_stream, + ) + .await; + } + }); + + // Step 17: Connect and Disconnect Blocks + if chain_tip.is_none() { + chain_tip = Some( + runtime.block_on(init::validate_best_block_header(&mut bitcoind_rpc_client)).unwrap(), + ); + } + let channel_manager_listener = channel_manager.clone(); + let chain_monitor_listener = chain_monitor.clone(); + let network = args.network; + runtime.spawn(async move { + let chain_poller = poll::ChainPoller::new(&mut bitcoind_rpc_client, network); + let chain_listener = (chain_monitor_listener, channel_manager_listener); + let mut spv_client = + SpvClient::new(chain_tip.unwrap(), chain_poller, &mut cache, &chain_listener); + loop { + spv_client.poll_best_tip().await.unwrap(); + thread::sleep(Duration::new(1, 0)); + } + }); + + // Step 17 & 18: Initialize ChannelManager persistence & Once Per Minute: ChannelManager's + // timer_chan_freshness_every_min() and PeerManager's timer_tick_occurred + let runtime_handle = runtime.handle(); + let data_dir = ldk_data_dir.clone(); + let persist_channel_manager_callback = + move |node: &ChannelManager| FilesystemPersister::persist_manager(data_dir.clone(), &*node); + BackgroundProcessor::start( + persist_channel_manager_callback, + channel_manager.clone(), + logger.clone(), + ); + + let peer_manager_processor = peer_manager.clone(); + runtime_handle.spawn(async move { + loop { + peer_manager_processor.timer_tick_occurred(); + thread::sleep(Duration::new(60, 0)); + } + }); + + // Step 15: Initialize LDK Event Handling + let peer_manager_event_listener = peer_manager.clone(); + let channel_manager_event_listener = channel_manager.clone(); + let chain_monitor_event_listener = chain_monitor.clone(); + let keys_manager_listener = keys_manager.clone(); + let payment_info: PaymentInfoStorage = Arc::new(Mutex::new(HashMap::new())); + let payment_info_for_events = payment_info.clone(); + let handle = runtime_handle.clone(); + let network = args.network; + thread::spawn(move || { + handle_ldk_events( + peer_manager_event_listener, + channel_manager_event_listener, + chain_monitor_event_listener, + bitcoind_client.clone(), + keys_manager_listener, + payment_info_for_events, + network, + ); + }); + + // Reconnect to channel peers if possible. + let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone()); + match disk::read_channel_peer_data(Path::new(&peer_data_path)) { + Ok(mut info) => { + for (pubkey, peer_addr) in info.drain() { + let _ = cli::connect_peer_if_necessary( + pubkey, + peer_addr, + peer_manager.clone(), + event_ntfn_sender.clone(), + handle.clone(), + ); + } + } + Err(e) => println!("ERROR: errored reading channel peer info from disk: {:?}", e), + } + + // Start the CLI. + cli::poll_for_user_input( + peer_manager.clone(), + channel_manager.clone(), + router.clone(), + payment_info, + keys_manager.get_node_secret(), + event_ntfn_sender, + ldk_data_dir.clone(), + logger.clone(), + handle, + args.network, + ); }