Merge pull request #1063 from getlipa/feature/log-ldk-node-data

Log LDK node data

src/fund_migration.rs

@@ -12,6 +12,7 @@ use breez_sdk_core::{BreezServices, OpenChannelFeeRequest, OpeningFeeParams};
 use graphql::schema::{migrate_funds, migration_balance, MigrateFunds, MigrationBalance};
 use graphql::{build_client, post_blocking};
 use honey_badger::Auth;
+use log::info;
 use num_enum::TryFromPrimitive;
 use perro::{MapToError, OptionToError, ResultTrait};
 use reqwest::blocking::Client;
@@ -121,6 +122,20 @@ pub(crate) fn migrate_funds(
     }
 }
 
+pub(crate) fn log_fund_migration_data(seed: &[u8; 64]) -> Result<()> {
+    let (private_key, public_key) = derive_ldk_keys(seed)?;
+    let public_key = hex::encode(public_key.serialize());
+
+    let message = format!("I control the private key of the node {public_key}");
+    let message = Message::from_hashed_data::<sha256::Hash>(message.as_bytes());
+    let signature = private_key.sign_ecdsa(message).serialize_der().to_string();
+
+    info!("Legacy LDK node pubkey: {public_key}");
+    info!("Legacy LDK node signature: {signature}");
+
+    Ok(())
+}
+
 fn fetch_legacy_balance(client: &Client, backend_url: &str, public_key: String) -> Result<u64> {
     let variables = migration_balance::Variables {
         node_pub_key: Some(public_key),

src/lib.rs

@@ -438,6 +438,8 @@ impl LightningNode {
         )
         .map_runtime_error_to(RuntimeErrorCode::FailedFundMigration)?;
 
+        fund_migration::log_fund_migration_data(&strong_typed_seed)?;
+
         let id = auth.get_wallet_pubkey_id().map_to_runtime_error(
             RuntimeErrorCode::AuthServiceUnavailable,
             "Failed to authenticate in order to get wallet pubkey id",