solana_remote_wallet/
remote_keypair.rs

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use {
    crate::{
        ledger::get_ledger_from_info,
        locator::{Locator, Manufacturer},
        remote_wallet::{
            RemoteWallet, RemoteWalletError, RemoteWalletInfo, RemoteWalletManager,
            RemoteWalletType,
        },
    },
    solana_sdk::{
        derivation_path::DerivationPath,
        pubkey::Pubkey,
        signature::{Signature, Signer, SignerError},
    },
};

pub struct RemoteKeypair {
    pub wallet_type: RemoteWalletType,
    pub derivation_path: DerivationPath,
    pub pubkey: Pubkey,
    pub path: String,
}

impl RemoteKeypair {
    pub fn new(
        wallet_type: RemoteWalletType,
        derivation_path: DerivationPath,
        confirm_key: bool,
        path: String,
    ) -> Result<Self, RemoteWalletError> {
        let pubkey = match &wallet_type {
            RemoteWalletType::Ledger(wallet) => wallet.get_pubkey(&derivation_path, confirm_key)?,
        };

        Ok(Self {
            wallet_type,
            derivation_path,
            pubkey,
            path,
        })
    }
}

impl Signer for RemoteKeypair {
    fn try_pubkey(&self) -> Result<Pubkey, SignerError> {
        Ok(self.pubkey)
    }

    fn try_sign_message(&self, message: &[u8]) -> Result<Signature, SignerError> {
        match &self.wallet_type {
            RemoteWalletType::Ledger(wallet) => wallet
                .sign_message(&self.derivation_path, message)
                .map_err(|e| e.into()),
        }
    }

    fn is_interactive(&self) -> bool {
        true
    }
}

pub fn generate_remote_keypair(
    locator: Locator,
    derivation_path: DerivationPath,
    wallet_manager: &RemoteWalletManager,
    confirm_key: bool,
    keypair_name: &str,
) -> Result<RemoteKeypair, RemoteWalletError> {
    let remote_wallet_info = RemoteWalletInfo::parse_locator(locator);
    if remote_wallet_info.manufacturer == Manufacturer::Ledger {
        let ledger = get_ledger_from_info(remote_wallet_info, keypair_name, wallet_manager)?;
        let path = format!("{}{}", ledger.pretty_path, derivation_path.get_query());
        Ok(RemoteKeypair::new(
            RemoteWalletType::Ledger(ledger),
            derivation_path,
            confirm_key,
            path,
        )?)
    } else {
        Err(RemoteWalletError::DeviceTypeMismatch)
    }
}